From d2796743cba2d30f018e10288effce53fbd53fbe Mon Sep 17 00:00:00 2001 From: Mark Einon Date: Thu, 20 Oct 2011 01:18:30 +0100 Subject: [PATCH] staging: et131x: Put all .c files into one big file Created one big .c file for the driver, moving the contents of all driver .c files into it. Signed-off-by: Mark Einon Signed-off-by: Greg Kroah-Hartman --- drivers/staging/et131x/Makefile | 11 - drivers/staging/et131x/et1310_eeprom.c | 408 -- drivers/staging/et131x/et1310_mac.c | 654 --- drivers/staging/et131x/et1310_phy.c | 375 -- drivers/staging/et131x/et1310_pm.c | 204 - drivers/staging/et131x/et1310_rx.c | 1160 ------ drivers/staging/et131x/et1310_tx.c | 793 ---- drivers/staging/et131x/et131x.c | 5042 +++++++++++++++++++++++ drivers/staging/et131x/et131x.h | 62 +- drivers/staging/et131x/et131x_ethtool.c | 201 - drivers/staging/et131x/et131x_initpci.c | 950 ----- drivers/staging/et131x/et131x_isr.c | 442 -- drivers/staging/et131x/et131x_netdev.c | 662 --- 13 files changed, 5102 insertions(+), 5862 deletions(-) delete mode 100644 drivers/staging/et131x/et1310_eeprom.c delete mode 100644 drivers/staging/et131x/et1310_mac.c delete mode 100644 drivers/staging/et131x/et1310_phy.c delete mode 100644 drivers/staging/et131x/et1310_pm.c delete mode 100644 drivers/staging/et131x/et1310_rx.c delete mode 100644 drivers/staging/et131x/et1310_tx.c create mode 100644 drivers/staging/et131x/et131x.c delete mode 100644 drivers/staging/et131x/et131x_ethtool.c delete mode 100644 drivers/staging/et131x/et131x_initpci.c delete mode 100644 drivers/staging/et131x/et131x_isr.c delete mode 100644 drivers/staging/et131x/et131x_netdev.c diff --git a/drivers/staging/et131x/Makefile b/drivers/staging/et131x/Makefile index 5ea0272fc7ad..027ff9453fe1 100644 --- a/drivers/staging/et131x/Makefile +++ b/drivers/staging/et131x/Makefile @@ -3,14 +3,3 @@ # obj-$(CONFIG_ET131X) += et131x.o - -et131x-y := et1310_eeprom.o \ - et1310_mac.o \ - et1310_phy.o \ - et1310_pm.o \ - et1310_rx.o \ - et1310_tx.o \ - et131x_initpci.o \ - et131x_ethtool.o \ - et131x_isr.o \ - et131x_netdev.o diff --git a/drivers/staging/et131x/et1310_eeprom.c b/drivers/staging/et131x/et1310_eeprom.c deleted file mode 100644 index 20b96605e4c0..000000000000 --- a/drivers/staging/et131x/et1310_eeprom.c +++ /dev/null @@ -1,408 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_eeprom.c - Code used to access the device's EEPROM - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et131x_adapter.h" -#include "et131x.h" - -/* - * EEPROM Defines - */ - -/* LBCIF Register Groups (addressed via 32-bit offsets) */ -#define LBCIF_DWORD0_GROUP 0xAC -#define LBCIF_DWORD1_GROUP 0xB0 - -/* LBCIF Registers (addressed via 8-bit offsets) */ -#define LBCIF_ADDRESS_REGISTER 0xAC -#define LBCIF_DATA_REGISTER 0xB0 -#define LBCIF_CONTROL_REGISTER 0xB1 -#define LBCIF_STATUS_REGISTER 0xB2 - -/* LBCIF Control Register Bits */ -#define LBCIF_CONTROL_SEQUENTIAL_READ 0x01 -#define LBCIF_CONTROL_PAGE_WRITE 0x02 -#define LBCIF_CONTROL_EEPROM_RELOAD 0x08 -#define LBCIF_CONTROL_TWO_BYTE_ADDR 0x20 -#define LBCIF_CONTROL_I2C_WRITE 0x40 -#define LBCIF_CONTROL_LBCIF_ENABLE 0x80 - -/* LBCIF Status Register Bits */ -#define LBCIF_STATUS_PHY_QUEUE_AVAIL 0x01 -#define LBCIF_STATUS_I2C_IDLE 0x02 -#define LBCIF_STATUS_ACK_ERROR 0x04 -#define LBCIF_STATUS_GENERAL_ERROR 0x08 -#define LBCIF_STATUS_CHECKSUM_ERROR 0x40 -#define LBCIF_STATUS_EEPROM_PRESENT 0x80 - -/* Miscellaneous Constraints */ -#define MAX_NUM_REGISTER_POLLS 1000 -#define MAX_NUM_WRITE_RETRIES 2 - -static int eeprom_wait_ready(struct pci_dev *pdev, u32 *status) -{ - u32 reg; - int i; - - /* - * 1. Check LBCIF Status Register for bits 6 & 3:2 all equal to 0 and - * bits 7,1:0 both equal to 1, at least once after reset. - * Subsequent operations need only to check that bits 1:0 are equal - * to 1 prior to starting a single byte read/write - */ - - for (i = 0; i < MAX_NUM_REGISTER_POLLS; i++) { - /* Read registers grouped in DWORD1 */ - if (pci_read_config_dword(pdev, LBCIF_DWORD1_GROUP, ®)) - return -EIO; - - /* I2C idle and Phy Queue Avail both true */ - if ((reg & 0x3000) == 0x3000) { - if (status) - *status = reg; - return reg & 0xFF; - } - } - return -ETIMEDOUT; -} - - -/** - * eeprom_write - Write a byte to the ET1310's EEPROM - * @adapter: pointer to our private adapter structure - * @addr: the address to write - * @data: the value to write - * - * Returns 1 for a successful write. - */ -static int eeprom_write(struct et131x_adapter *adapter, u32 addr, u8 data) -{ - struct pci_dev *pdev = adapter->pdev; - int index = 0; - int retries; - int err = 0; - int i2c_wack = 0; - int writeok = 0; - u32 status; - u32 val = 0; - - /* - * For an EEPROM, an I2C single byte write is defined as a START - * condition followed by the device address, EEPROM address, one byte - * of data and a STOP condition. The STOP condition will trigger the - * EEPROM's internally timed write cycle to the nonvolatile memory. - * All inputs are disabled during this write cycle and the EEPROM will - * not respond to any access until the internal write is complete. - */ - - err = eeprom_wait_ready(pdev, NULL); - if (err) - return err; - - /* - * 2. Write to the LBCIF Control Register: bit 7=1, bit 6=1, bit 3=0, - * and bits 1:0 both =0. Bit 5 should be set according to the - * type of EEPROM being accessed (1=two byte addressing, 0=one - * byte addressing). - */ - if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, - LBCIF_CONTROL_LBCIF_ENABLE | LBCIF_CONTROL_I2C_WRITE)) - return -EIO; - - i2c_wack = 1; - - /* Prepare EEPROM address for Step 3 */ - - for (retries = 0; retries < MAX_NUM_WRITE_RETRIES; retries++) { - /* Write the address to the LBCIF Address Register */ - if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr)) - break; - /* - * Write the data to the LBCIF Data Register (the I2C write - * will begin). - */ - if (pci_write_config_byte(pdev, LBCIF_DATA_REGISTER, data)) - break; - /* - * Monitor bit 1:0 of the LBCIF Status Register. When bits - * 1:0 are both equal to 1, the I2C write has completed and the - * internal write cycle of the EEPROM is about to start. - * (bits 1:0 = 01 is a legal state while waiting from both - * equal to 1, but bits 1:0 = 10 is invalid and implies that - * something is broken). - */ - err = eeprom_wait_ready(pdev, &status); - if (err < 0) - return 0; - - /* - * Check bit 3 of the LBCIF Status Register. If equal to 1, - * an error has occurred.Don't break here if we are revision - * 1, this is so we do a blind write for load bug. - */ - if ((status & LBCIF_STATUS_GENERAL_ERROR) - && adapter->pdev->revision == 0) - break; - - /* - * Check bit 2 of the LBCIF Status Register. If equal to 1 an - * ACK error has occurred on the address phase of the write. - * This could be due to an actual hardware failure or the - * EEPROM may still be in its internal write cycle from a - * previous write. This write operation was ignored and must be - *repeated later. - */ - if (status & LBCIF_STATUS_ACK_ERROR) { - /* - * This could be due to an actual hardware failure - * or the EEPROM may still be in its internal write - * cycle from a previous write. This write operation - * was ignored and must be repeated later. - */ - udelay(10); - continue; - } - - writeok = 1; - break; - } - - /* - * Set bit 6 of the LBCIF Control Register = 0. - */ - udelay(10); - - while (i2c_wack) { - if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, - LBCIF_CONTROL_LBCIF_ENABLE)) - writeok = 0; - - /* Do read until internal ACK_ERROR goes away meaning write - * completed - */ - do { - pci_write_config_dword(pdev, - LBCIF_ADDRESS_REGISTER, - addr); - do { - pci_read_config_dword(pdev, - LBCIF_DATA_REGISTER, &val); - } while ((val & 0x00010000) == 0); - } while (val & 0x00040000); - - if ((val & 0xFF00) != 0xC000 || index == 10000) - break; - index++; - } - return writeok ? 0 : -EIO; -} - -/** - * eeprom_read - Read a byte from the ET1310's EEPROM - * @adapter: pointer to our private adapter structure - * @addr: the address from which to read - * @pdata: a pointer to a byte in which to store the value of the read - * @eeprom_id: the ID of the EEPROM - * @addrmode: how the EEPROM is to be accessed - * - * Returns 1 for a successful read - */ -static int eeprom_read(struct et131x_adapter *adapter, u32 addr, u8 *pdata) -{ - struct pci_dev *pdev = adapter->pdev; - int err; - u32 status; - - /* - * A single byte read is similar to the single byte write, with the - * exception of the data flow: - */ - - err = eeprom_wait_ready(pdev, NULL); - if (err) - return err; - /* - * Write to the LBCIF Control Register: bit 7=1, bit 6=0, bit 3=0, - * and bits 1:0 both =0. Bit 5 should be set according to the type - * of EEPROM being accessed (1=two byte addressing, 0=one byte - * addressing). - */ - if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, - LBCIF_CONTROL_LBCIF_ENABLE)) - return -EIO; - /* - * Write the address to the LBCIF Address Register (I2C read will - * begin). - */ - if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr)) - return -EIO; - /* - * Monitor bit 0 of the LBCIF Status Register. When = 1, I2C read - * is complete. (if bit 1 =1 and bit 0 stays = 0, a hardware failure - * has occurred). - */ - err = eeprom_wait_ready(pdev, &status); - if (err < 0) - return err; - /* - * Regardless of error status, read data byte from LBCIF Data - * Register. - */ - *pdata = err; - /* - * Check bit 2 of the LBCIF Status Register. If = 1, - * then an error has occurred. - */ - return (status & LBCIF_STATUS_ACK_ERROR) ? -EIO : 0; -} - -int et131x_init_eeprom(struct et131x_adapter *adapter) -{ - struct pci_dev *pdev = adapter->pdev; - u8 eestatus; - - /* We first need to check the EEPROM Status code located at offset - * 0xB2 of config space - */ - pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, - &eestatus); - - /* THIS IS A WORKAROUND: - * I need to call this function twice to get my card in a - * LG M1 Express Dual running. I tried also a msleep before this - * function, because I thougth there could be some time condidions - * but it didn't work. Call the whole function twice also work. - */ - if (pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, &eestatus)) { - dev_err(&pdev->dev, - "Could not read PCI config space for EEPROM Status\n"); - return -EIO; - } - - /* Determine if the error(s) we care about are present. If they are - * present we need to fail. - */ - if (eestatus & 0x4C) { - int write_failed = 0; - if (pdev->revision == 0x01) { - int i; - static const u8 eedata[4] = { 0xFE, 0x13, 0x10, 0xFF }; - - /* Re-write the first 4 bytes if we have an eeprom - * present and the revision id is 1, this fixes the - * corruption seen with 1310 B Silicon - */ - for (i = 0; i < 3; i++) - if (eeprom_write(adapter, i, eedata[i]) < 0) - write_failed = 1; - } - if (pdev->revision != 0x01 || write_failed) { - dev_err(&pdev->dev, - "Fatal EEPROM Status Error - 0x%04x\n", eestatus); - - /* This error could mean that there was an error - * reading the eeprom or that the eeprom doesn't exist. - * We will treat each case the same and not try to - * gather additional information that normally would - * come from the eeprom, like MAC Address - */ - adapter->has_eeprom = 0; - return -EIO; - } - } - adapter->has_eeprom = 1; - - /* Read the EEPROM for information regarding LED behavior. Refer to - * ET1310_phy.c, et131x_xcvr_init(), for its use. - */ - eeprom_read(adapter, 0x70, &adapter->eeprom_data[0]); - eeprom_read(adapter, 0x71, &adapter->eeprom_data[1]); - - if (adapter->eeprom_data[0] != 0xcd) - /* Disable all optional features */ - adapter->eeprom_data[1] = 0x00; - - return 0; -} diff --git a/drivers/staging/et131x/et1310_mac.c b/drivers/staging/et131x/et1310_mac.c deleted file mode 100644 index 65179a364b74..000000000000 --- a/drivers/staging/et131x/et1310_mac.c +++ /dev/null @@ -1,654 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_mac.c - All code and routines pertaining to the MAC - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et131x_adapter.h" -#include "et131x.h" - -#define COUNTER_WRAP_16_BIT 0x10000 -#define COUNTER_WRAP_12_BIT 0x1000 - -/** - * et1310_config_mac_regs1 - Initialize the first part of MAC regs - * @adapter: pointer to our adapter structure - */ -void et1310_config_mac_regs1(struct et131x_adapter *adapter) -{ - struct mac_regs __iomem *macregs = &adapter->regs->mac; - u32 station1; - u32 station2; - u32 ipg; - - /* First we need to reset everything. Write to MAC configuration - * register 1 to perform reset. - */ - writel(0xC00F0000, ¯egs->cfg1); - - /* Next lets configure the MAC Inter-packet gap register */ - ipg = 0x38005860; /* IPG1 0x38 IPG2 0x58 B2B 0x60 */ - ipg |= 0x50 << 8; /* ifg enforce 0x50 */ - writel(ipg, ¯egs->ipg); - - /* Next lets configure the MAC Half Duplex register */ - /* BEB trunc 0xA, Ex Defer, Rexmit 0xF Coll 0x37 */ - writel(0x00A1F037, ¯egs->hfdp); - - /* Next lets configure the MAC Interface Control register */ - writel(0, ¯egs->if_ctrl); - - /* Let's move on to setting up the mii management configuration */ - writel(0x07, ¯egs->mii_mgmt_cfg); /* Clock reset 0x7 */ - - /* Next lets configure the MAC Station Address register. These - * values are read from the EEPROM during initialization and stored - * in the adapter structure. We write what is stored in the adapter - * structure to the MAC Station Address registers high and low. This - * station address is used for generating and checking pause control - * packets. - */ - station2 = (adapter->addr[1] << ET_MAC_STATION_ADDR2_OC2_SHIFT) | - (adapter->addr[0] << ET_MAC_STATION_ADDR2_OC1_SHIFT); - station1 = (adapter->addr[5] << ET_MAC_STATION_ADDR1_OC6_SHIFT) | - (adapter->addr[4] << ET_MAC_STATION_ADDR1_OC5_SHIFT) | - (adapter->addr[3] << ET_MAC_STATION_ADDR1_OC4_SHIFT) | - adapter->addr[2]; - writel(station1, ¯egs->station_addr_1); - writel(station2, ¯egs->station_addr_2); - - /* Max ethernet packet in bytes that will passed by the mac without - * being truncated. Allow the MAC to pass 4 more than our max packet - * size. This is 4 for the Ethernet CRC. - * - * Packets larger than (registry_jumbo_packet) that do not contain a - * VLAN ID will be dropped by the Rx function. - */ - writel(adapter->registry_jumbo_packet + 4, ¯egs->max_fm_len); - - /* clear out MAC config reset */ - writel(0, ¯egs->cfg1); -} - -/** - * et1310_config_mac_regs2 - Initialize the second part of MAC regs - * @adapter: pointer to our adapter structure - */ -void et1310_config_mac_regs2(struct et131x_adapter *adapter) -{ - int32_t delay = 0; - struct mac_regs __iomem *mac = &adapter->regs->mac; - struct phy_device *phydev = adapter->phydev; - u32 cfg1; - u32 cfg2; - u32 ifctrl; - u32 ctl; - - ctl = readl(&adapter->regs->txmac.ctl); - cfg1 = readl(&mac->cfg1); - cfg2 = readl(&mac->cfg2); - ifctrl = readl(&mac->if_ctrl); - - /* Set up the if mode bits */ - cfg2 &= ~0x300; - if (phydev && phydev->speed == SPEED_1000) { - cfg2 |= 0x200; - /* Phy mode bit */ - ifctrl &= ~(1 << 24); - } else { - cfg2 |= 0x100; - ifctrl |= (1 << 24); - } - - /* We need to enable Rx/Tx */ - cfg1 |= CFG1_RX_ENABLE | CFG1_TX_ENABLE | CFG1_TX_FLOW; - /* Initialize loop back to off */ - cfg1 &= ~(CFG1_LOOPBACK | CFG1_RX_FLOW); - if (adapter->flowcontrol == FLOW_RXONLY || - adapter->flowcontrol == FLOW_BOTH) - cfg1 |= CFG1_RX_FLOW; - writel(cfg1, &mac->cfg1); - - /* Now we need to initialize the MAC Configuration 2 register */ - /* preamble 7, check length, huge frame off, pad crc, crc enable - full duplex off */ - cfg2 |= 0x7016; - cfg2 &= ~0x0021; - - /* Turn on duplex if needed */ - if (phydev && phydev->duplex == DUPLEX_FULL) - cfg2 |= 0x01; - - ifctrl &= ~(1 << 26); - if (phydev && phydev->duplex == DUPLEX_HALF) - ifctrl |= (1<<26); /* Enable ghd */ - - writel(ifctrl, &mac->if_ctrl); - writel(cfg2, &mac->cfg2); - - do { - udelay(10); - delay++; - cfg1 = readl(&mac->cfg1); - } while ((cfg1 & CFG1_WAIT) != CFG1_WAIT && delay < 100); - - if (delay == 100) { - dev_warn(&adapter->pdev->dev, - "Syncd bits did not respond correctly cfg1 word 0x%08x\n", - cfg1); - } - - /* Enable txmac */ - ctl |= 0x09; /* TX mac enable, FC disable */ - writel(ctl, &adapter->regs->txmac.ctl); - - /* Ready to start the RXDMA/TXDMA engine */ - if (adapter->flags & fMP_ADAPTER_LOWER_POWER) { - et131x_rx_dma_enable(adapter); - et131x_tx_dma_enable(adapter); - } -} - -void et1310_config_rxmac_regs(struct et131x_adapter *adapter) -{ - struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; - struct phy_device *phydev = adapter->phydev; - u32 sa_lo; - u32 sa_hi = 0; - u32 pf_ctrl = 0; - - /* Disable the MAC while it is being configured (also disable WOL) */ - writel(0x8, &rxmac->ctrl); - - /* Initialize WOL to disabled. */ - writel(0, &rxmac->crc0); - writel(0, &rxmac->crc12); - writel(0, &rxmac->crc34); - - /* We need to set the WOL mask0 - mask4 next. We initialize it to - * its default Values of 0x00000000 because there are not WOL masks - * as of this time. - */ - writel(0, &rxmac->mask0_word0); - writel(0, &rxmac->mask0_word1); - writel(0, &rxmac->mask0_word2); - writel(0, &rxmac->mask0_word3); - - writel(0, &rxmac->mask1_word0); - writel(0, &rxmac->mask1_word1); - writel(0, &rxmac->mask1_word2); - writel(0, &rxmac->mask1_word3); - - writel(0, &rxmac->mask2_word0); - writel(0, &rxmac->mask2_word1); - writel(0, &rxmac->mask2_word2); - writel(0, &rxmac->mask2_word3); - - writel(0, &rxmac->mask3_word0); - writel(0, &rxmac->mask3_word1); - writel(0, &rxmac->mask3_word2); - writel(0, &rxmac->mask3_word3); - - writel(0, &rxmac->mask4_word0); - writel(0, &rxmac->mask4_word1); - writel(0, &rxmac->mask4_word2); - writel(0, &rxmac->mask4_word3); - - /* Lets setup the WOL Source Address */ - sa_lo = (adapter->addr[2] << ET_WOL_LO_SA3_SHIFT) | - (adapter->addr[3] << ET_WOL_LO_SA4_SHIFT) | - (adapter->addr[4] << ET_WOL_LO_SA5_SHIFT) | - adapter->addr[5]; - writel(sa_lo, &rxmac->sa_lo); - - sa_hi = (u32) (adapter->addr[0] << ET_WOL_HI_SA1_SHIFT) | - adapter->addr[1]; - writel(sa_hi, &rxmac->sa_hi); - - /* Disable all Packet Filtering */ - writel(0, &rxmac->pf_ctrl); - - /* Let's initialize the Unicast Packet filtering address */ - if (adapter->packet_filter & ET131X_PACKET_TYPE_DIRECTED) { - et1310_setup_device_for_unicast(adapter); - pf_ctrl |= 4; /* Unicast filter */ - } else { - writel(0, &rxmac->uni_pf_addr1); - writel(0, &rxmac->uni_pf_addr2); - writel(0, &rxmac->uni_pf_addr3); - } - - /* Let's initialize the Multicast hash */ - if (!(adapter->packet_filter & ET131X_PACKET_TYPE_ALL_MULTICAST)) { - pf_ctrl |= 2; /* Multicast filter */ - et1310_setup_device_for_multicast(adapter); - } - - /* Runt packet filtering. Didn't work in version A silicon. */ - pf_ctrl |= (NIC_MIN_PACKET_SIZE + 4) << 16; - pf_ctrl |= 8; /* Fragment filter */ - - if (adapter->registry_jumbo_packet > 8192) - /* In order to transmit jumbo packets greater than 8k, the - * FIFO between RxMAC and RxDMA needs to be reduced in size - * to (16k - Jumbo packet size). In order to implement this, - * we must use "cut through" mode in the RxMAC, which chops - * packets down into segments which are (max_size * 16). In - * this case we selected 256 bytes, since this is the size of - * the PCI-Express TLP's that the 1310 uses. - * - * seg_en on, fc_en off, size 0x10 - */ - writel(0x41, &rxmac->mcif_ctrl_max_seg); - else - writel(0, &rxmac->mcif_ctrl_max_seg); - - /* Initialize the MCIF water marks */ - writel(0, &rxmac->mcif_water_mark); - - /* Initialize the MIF control */ - writel(0, &rxmac->mif_ctrl); - - /* Initialize the Space Available Register */ - writel(0, &rxmac->space_avail); - - /* Initialize the the mif_ctrl register - * bit 3: Receive code error. One or more nibbles were signaled as - * errors during the reception of the packet. Clear this - * bit in Gigabit, set it in 100Mbit. This was derived - * experimentally at UNH. - * bit 4: Receive CRC error. The packet's CRC did not match the - * internally generated CRC. - * bit 5: Receive length check error. Indicates that frame length - * field value in the packet does not match the actual data - * byte length and is not a type field. - * bit 16: Receive frame truncated. - * bit 17: Drop packet enable - */ - if (phydev && phydev->speed == SPEED_100) - writel(0x30038, &rxmac->mif_ctrl); - else - writel(0x30030, &rxmac->mif_ctrl); - - /* Finally we initialize RxMac to be enabled & WOL disabled. Packet - * filter is always enabled since it is where the runt packets are - * supposed to be dropped. For version A silicon, runt packet - * dropping doesn't work, so it is disabled in the pf_ctrl register, - * but we still leave the packet filter on. - */ - writel(pf_ctrl, &rxmac->pf_ctrl); - writel(0x9, &rxmac->ctrl); -} - -void et1310_config_txmac_regs(struct et131x_adapter *adapter) -{ - struct txmac_regs __iomem *txmac = &adapter->regs->txmac; - - /* We need to update the Control Frame Parameters - * cfpt - control frame pause timer set to 64 (0x40) - * cfep - control frame extended pause timer set to 0x0 - */ - if (adapter->flowcontrol == FLOW_NONE) - writel(0, &txmac->cf_param); - else - writel(0x40, &txmac->cf_param); -} - -void et1310_config_macstat_regs(struct et131x_adapter *adapter) -{ - struct macstat_regs __iomem *macstat = - &adapter->regs->macstat; - - /* Next we need to initialize all the macstat registers to zero on - * the device. - */ - writel(0, &macstat->txrx_0_64_byte_frames); - writel(0, &macstat->txrx_65_127_byte_frames); - writel(0, &macstat->txrx_128_255_byte_frames); - writel(0, &macstat->txrx_256_511_byte_frames); - writel(0, &macstat->txrx_512_1023_byte_frames); - writel(0, &macstat->txrx_1024_1518_byte_frames); - writel(0, &macstat->txrx_1519_1522_gvln_frames); - - writel(0, &macstat->rx_bytes); - writel(0, &macstat->rx_packets); - writel(0, &macstat->rx_fcs_errs); - writel(0, &macstat->rx_multicast_packets); - writel(0, &macstat->rx_broadcast_packets); - writel(0, &macstat->rx_control_frames); - writel(0, &macstat->rx_pause_frames); - writel(0, &macstat->rx_unknown_opcodes); - writel(0, &macstat->rx_align_errs); - writel(0, &macstat->rx_frame_len_errs); - writel(0, &macstat->rx_code_errs); - writel(0, &macstat->rx_carrier_sense_errs); - writel(0, &macstat->rx_undersize_packets); - writel(0, &macstat->rx_oversize_packets); - writel(0, &macstat->rx_fragment_packets); - writel(0, &macstat->rx_jabbers); - writel(0, &macstat->rx_drops); - - writel(0, &macstat->tx_bytes); - writel(0, &macstat->tx_packets); - writel(0, &macstat->tx_multicast_packets); - writel(0, &macstat->tx_broadcast_packets); - writel(0, &macstat->tx_pause_frames); - writel(0, &macstat->tx_deferred); - writel(0, &macstat->tx_excessive_deferred); - writel(0, &macstat->tx_single_collisions); - writel(0, &macstat->tx_multiple_collisions); - writel(0, &macstat->tx_late_collisions); - writel(0, &macstat->tx_excessive_collisions); - writel(0, &macstat->tx_total_collisions); - writel(0, &macstat->tx_pause_honored_frames); - writel(0, &macstat->tx_drops); - writel(0, &macstat->tx_jabbers); - writel(0, &macstat->tx_fcs_errs); - writel(0, &macstat->tx_control_frames); - writel(0, &macstat->tx_oversize_frames); - writel(0, &macstat->tx_undersize_frames); - writel(0, &macstat->tx_fragments); - writel(0, &macstat->carry_reg1); - writel(0, &macstat->carry_reg2); - - /* Unmask any counters that we want to track the overflow of. - * Initially this will be all counters. It may become clear later - * that we do not need to track all counters. - */ - writel(0xFFFFBE32, &macstat->carry_reg1_mask); - writel(0xFFFE7E8B, &macstat->carry_reg2_mask); -} - -void et1310_config_flow_control(struct et131x_adapter *adapter) -{ - struct phy_device *phydev = adapter->phydev; - - if (phydev->duplex == DUPLEX_HALF) { - adapter->flowcontrol = FLOW_NONE; - } else { - char remote_pause, remote_async_pause; - - et1310_phy_access_mii_bit(adapter, - TRUEPHY_BIT_READ, 5, 10, &remote_pause); - et1310_phy_access_mii_bit(adapter, - TRUEPHY_BIT_READ, 5, 11, - &remote_async_pause); - - if ((remote_pause == TRUEPHY_BIT_SET) && - (remote_async_pause == TRUEPHY_BIT_SET)) { - adapter->flowcontrol = adapter->wanted_flow; - } else if ((remote_pause == TRUEPHY_BIT_SET) && - (remote_async_pause == TRUEPHY_BIT_CLEAR)) { - if (adapter->wanted_flow == FLOW_BOTH) - adapter->flowcontrol = FLOW_BOTH; - else - adapter->flowcontrol = FLOW_NONE; - } else if ((remote_pause == TRUEPHY_BIT_CLEAR) && - (remote_async_pause == TRUEPHY_BIT_CLEAR)) { - adapter->flowcontrol = FLOW_NONE; - } else {/* if (remote_pause == TRUEPHY_CLEAR_BIT && - remote_async_pause == TRUEPHY_SET_BIT) */ - if (adapter->wanted_flow == FLOW_BOTH) - adapter->flowcontrol = FLOW_RXONLY; - else - adapter->flowcontrol = FLOW_NONE; - } - } -} - -/** - * et1310_update_macstat_host_counters - Update the local copy of the statistics - * @adapter: pointer to the adapter structure - */ -void et1310_update_macstat_host_counters(struct et131x_adapter *adapter) -{ - struct ce_stats *stats = &adapter->stats; - struct macstat_regs __iomem *macstat = - &adapter->regs->macstat; - - stats->tx_collisions += readl(&macstat->tx_total_collisions); - stats->tx_first_collisions += readl(&macstat->tx_single_collisions); - stats->tx_deferred += readl(&macstat->tx_deferred); - stats->tx_excessive_collisions += - readl(&macstat->tx_multiple_collisions); - stats->tx_late_collisions += readl(&macstat->tx_late_collisions); - stats->tx_underflows += readl(&macstat->tx_undersize_frames); - stats->tx_max_pkt_errs += readl(&macstat->tx_oversize_frames); - - stats->rx_align_errs += readl(&macstat->rx_align_errs); - stats->rx_crc_errs += readl(&macstat->rx_code_errs); - stats->rcvd_pkts_dropped += readl(&macstat->rx_drops); - stats->rx_overflows += readl(&macstat->rx_oversize_packets); - stats->rx_code_violations += readl(&macstat->rx_fcs_errs); - stats->rx_length_errs += readl(&macstat->rx_frame_len_errs); - stats->rx_other_errs += readl(&macstat->rx_fragment_packets); -} - -/** - * et1310_handle_macstat_interrupt - * @adapter: pointer to the adapter structure - * - * One of the MACSTAT counters has wrapped. Update the local copy of - * the statistics held in the adapter structure, checking the "wrap" - * bit for each counter. - */ -void et1310_handle_macstat_interrupt(struct et131x_adapter *adapter) -{ - u32 carry_reg1; - u32 carry_reg2; - - /* Read the interrupt bits from the register(s). These are Clear On - * Write. - */ - carry_reg1 = readl(&adapter->regs->macstat.carry_reg1); - carry_reg2 = readl(&adapter->regs->macstat.carry_reg2); - - writel(carry_reg1, &adapter->regs->macstat.carry_reg1); - writel(carry_reg2, &adapter->regs->macstat.carry_reg2); - - /* We need to do update the host copy of all the MAC_STAT counters. - * For each counter, check it's overflow bit. If the overflow bit is - * set, then increment the host version of the count by one complete - * revolution of the counter. This routine is called when the counter - * block indicates that one of the counters has wrapped. - */ - if (carry_reg1 & (1 << 14)) - adapter->stats.rx_code_violations += COUNTER_WRAP_16_BIT; - if (carry_reg1 & (1 << 8)) - adapter->stats.rx_align_errs += COUNTER_WRAP_12_BIT; - if (carry_reg1 & (1 << 7)) - adapter->stats.rx_length_errs += COUNTER_WRAP_16_BIT; - if (carry_reg1 & (1 << 2)) - adapter->stats.rx_other_errs += COUNTER_WRAP_16_BIT; - if (carry_reg1 & (1 << 6)) - adapter->stats.rx_crc_errs += COUNTER_WRAP_16_BIT; - if (carry_reg1 & (1 << 3)) - adapter->stats.rx_overflows += COUNTER_WRAP_16_BIT; - if (carry_reg1 & (1 << 0)) - adapter->stats.rcvd_pkts_dropped += COUNTER_WRAP_16_BIT; - if (carry_reg2 & (1 << 16)) - adapter->stats.tx_max_pkt_errs += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 15)) - adapter->stats.tx_underflows += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 6)) - adapter->stats.tx_first_collisions += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 8)) - adapter->stats.tx_deferred += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 5)) - adapter->stats.tx_excessive_collisions += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 4)) - adapter->stats.tx_late_collisions += COUNTER_WRAP_12_BIT; - if (carry_reg2 & (1 << 2)) - adapter->stats.tx_collisions += COUNTER_WRAP_12_BIT; -} - -void et1310_setup_device_for_multicast(struct et131x_adapter *adapter) -{ - struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; - uint32_t nIndex; - uint32_t result; - uint32_t hash1 = 0; - uint32_t hash2 = 0; - uint32_t hash3 = 0; - uint32_t hash4 = 0; - u32 pm_csr; - - /* If ET131X_PACKET_TYPE_MULTICAST is specified, then we provision - * the multi-cast LIST. If it is NOT specified, (and "ALL" is not - * specified) then we should pass NO multi-cast addresses to the - * driver. - */ - if (adapter->packet_filter & ET131X_PACKET_TYPE_MULTICAST) { - /* Loop through our multicast array and set up the device */ - for (nIndex = 0; nIndex < adapter->multicast_addr_count; - nIndex++) { - result = ether_crc(6, adapter->multicast_list[nIndex]); - - result = (result & 0x3F800000) >> 23; - - if (result < 32) { - hash1 |= (1 << result); - } else if ((31 < result) && (result < 64)) { - result -= 32; - hash2 |= (1 << result); - } else if ((63 < result) && (result < 96)) { - result -= 64; - hash3 |= (1 << result); - } else { - result -= 96; - hash4 |= (1 << result); - } - } - } - - /* Write out the new hash to the device */ - pm_csr = readl(&adapter->regs->global.pm_csr); - if (!et1310_in_phy_coma(adapter)) { - writel(hash1, &rxmac->multi_hash1); - writel(hash2, &rxmac->multi_hash2); - writel(hash3, &rxmac->multi_hash3); - writel(hash4, &rxmac->multi_hash4); - } -} - -void et1310_setup_device_for_unicast(struct et131x_adapter *adapter) -{ - struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; - u32 uni_pf1; - u32 uni_pf2; - u32 uni_pf3; - u32 pm_csr; - - /* Set up unicast packet filter reg 3 to be the first two octets of - * the MAC address for both address - * - * Set up unicast packet filter reg 2 to be the octets 2 - 5 of the - * MAC address for second address - * - * Set up unicast packet filter reg 3 to be the octets 2 - 5 of the - * MAC address for first address - */ - uni_pf3 = (adapter->addr[0] << ET_UNI_PF_ADDR2_1_SHIFT) | - (adapter->addr[1] << ET_UNI_PF_ADDR2_2_SHIFT) | - (adapter->addr[0] << ET_UNI_PF_ADDR1_1_SHIFT) | - adapter->addr[1]; - - uni_pf2 = (adapter->addr[2] << ET_UNI_PF_ADDR2_3_SHIFT) | - (adapter->addr[3] << ET_UNI_PF_ADDR2_4_SHIFT) | - (adapter->addr[4] << ET_UNI_PF_ADDR2_5_SHIFT) | - adapter->addr[5]; - - uni_pf1 = (adapter->addr[2] << ET_UNI_PF_ADDR1_3_SHIFT) | - (adapter->addr[3] << ET_UNI_PF_ADDR1_4_SHIFT) | - (adapter->addr[4] << ET_UNI_PF_ADDR1_5_SHIFT) | - adapter->addr[5]; - - pm_csr = readl(&adapter->regs->global.pm_csr); - if (!et1310_in_phy_coma(adapter)) { - writel(uni_pf1, &rxmac->uni_pf_addr1); - writel(uni_pf2, &rxmac->uni_pf_addr2); - writel(uni_pf3, &rxmac->uni_pf_addr3); - } -} diff --git a/drivers/staging/et131x/et1310_phy.c b/drivers/staging/et131x/et1310_phy.c deleted file mode 100644 index b809dd4e5277..000000000000 --- a/drivers/staging/et131x/et1310_phy.c +++ /dev/null @@ -1,375 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs - * - * Copyright * 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_phy.c - Routines for configuring and accessing the PHY - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright * 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" - -#include "et131x_adapter.h" - -#include "et1310_address_map.h" -#include "et1310_tx.h" -#include "et1310_rx.h" - -#include "et131x.h" - -int et131x_mdio_read(struct mii_bus *bus, int phy_addr, int reg) -{ - struct net_device *netdev = bus->priv; - struct et131x_adapter *adapter = netdev_priv(netdev); - u16 value; - int ret; - - ret = et131x_phy_mii_read(adapter, phy_addr, reg, &value); - - if (ret < 0) - return ret; - else - return value; -} - -int et131x_mdio_write(struct mii_bus *bus, int phy_addr, int reg, u16 value) -{ - struct net_device *netdev = bus->priv; - struct et131x_adapter *adapter = netdev_priv(netdev); - - return et131x_mii_write(adapter, reg, value); -} - -int et131x_mdio_reset(struct mii_bus *bus) -{ - struct net_device *netdev = bus->priv; - struct et131x_adapter *adapter = netdev_priv(netdev); - - et131x_mii_write(adapter, MII_BMCR, BMCR_RESET); - - return 0; -} - -int et131x_mii_read(struct et131x_adapter *adapter, u8 reg, u16 *value) -{ - struct phy_device *phydev = adapter->phydev; - - if (!phydev) - return -EIO; - - return et131x_phy_mii_read(adapter, phydev->addr, reg, value); -} - -/** - * et131x_phy_mii_read - Read from the PHY through the MII Interface on the MAC - * @adapter: pointer to our private adapter structure - * @addr: the address of the transceiver - * @reg: the register to read - * @value: pointer to a 16-bit value in which the value will be stored - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr, - u8 reg, u16 *value) -{ - struct mac_regs __iomem *mac = &adapter->regs->mac; - int status = 0; - u32 delay = 0; - u32 mii_addr; - u32 mii_cmd; - u32 mii_indicator; - - /* Save a local copy of the registers we are dealing with so we can - * set them back - */ - mii_addr = readl(&mac->mii_mgmt_addr); - mii_cmd = readl(&mac->mii_mgmt_cmd); - - /* Stop the current operation */ - writel(0, &mac->mii_mgmt_cmd); - - /* Set up the register we need to read from on the correct PHY */ - writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr); - - writel(0x1, &mac->mii_mgmt_cmd); - - do { - udelay(50); - delay++; - mii_indicator = readl(&mac->mii_mgmt_indicator); - } while ((mii_indicator & MGMT_WAIT) && delay < 50); - - /* If we hit the max delay, we could not read the register */ - if (delay == 50) { - dev_warn(&adapter->pdev->dev, - "reg 0x%08x could not be read\n", reg); - dev_warn(&adapter->pdev->dev, "status is 0x%08x\n", - mii_indicator); - - status = -EIO; - } - - /* If we hit here we were able to read the register and we need to - * return the value to the caller */ - *value = readl(&mac->mii_mgmt_stat) & 0xFFFF; - - /* Stop the read operation */ - writel(0, &mac->mii_mgmt_cmd); - - /* set the registers we touched back to the state at which we entered - * this function - */ - writel(mii_addr, &mac->mii_mgmt_addr); - writel(mii_cmd, &mac->mii_mgmt_cmd); - - return status; -} - -/** - * et131x_mii_write - Write to a PHY register through the MII interface of the MAC - * @adapter: pointer to our private adapter structure - * @reg: the register to read - * @value: 16-bit value to write - * - * FIXME: one caller in netdev still - * - * Return 0 on success, errno on failure (as defined in errno.h) - */ -int et131x_mii_write(struct et131x_adapter *adapter, u8 reg, u16 value) -{ - struct mac_regs __iomem *mac = &adapter->regs->mac; - struct phy_device *phydev = adapter->phydev; - int status = 0; - u8 addr; - u32 delay = 0; - u32 mii_addr; - u32 mii_cmd; - u32 mii_indicator; - - if (!phydev) - return -EIO; - - addr = phydev->addr; - - /* Save a local copy of the registers we are dealing with so we can - * set them back - */ - mii_addr = readl(&mac->mii_mgmt_addr); - mii_cmd = readl(&mac->mii_mgmt_cmd); - - /* Stop the current operation */ - writel(0, &mac->mii_mgmt_cmd); - - /* Set up the register we need to write to on the correct PHY */ - writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr); - - /* Add the value to write to the registers to the mac */ - writel(value, &mac->mii_mgmt_ctrl); - - do { - udelay(50); - delay++; - mii_indicator = readl(&mac->mii_mgmt_indicator); - } while ((mii_indicator & MGMT_BUSY) && delay < 100); - - /* If we hit the max delay, we could not write the register */ - if (delay == 100) { - u16 tmp; - - dev_warn(&adapter->pdev->dev, - "reg 0x%08x could not be written", reg); - dev_warn(&adapter->pdev->dev, "status is 0x%08x\n", - mii_indicator); - dev_warn(&adapter->pdev->dev, "command is 0x%08x\n", - readl(&mac->mii_mgmt_cmd)); - - et131x_mii_read(adapter, reg, &tmp); - - status = -EIO; - } - /* Stop the write operation */ - writel(0, &mac->mii_mgmt_cmd); - - /* - * set the registers we touched back to the state at which we entered - * this function - */ - writel(mii_addr, &mac->mii_mgmt_addr); - writel(mii_cmd, &mac->mii_mgmt_cmd); - - return status; -} - -/** - * et1310_phy_power_down - PHY power control - * @adapter: device to control - * @down: true for off/false for back on - * - * one hundred, ten, one thousand megs - * How would you like to have your LAN accessed - * Can't you see that this code processed - * Phy power, phy power.. - */ -void et1310_phy_power_down(struct et131x_adapter *adapter, bool down) -{ - u16 data; - - et131x_mii_read(adapter, MII_BMCR, &data); - data &= ~BMCR_PDOWN; - if (down) - data |= BMCR_PDOWN; - et131x_mii_write(adapter, MII_BMCR, data); -} - -/* Still used from _mac for BIT_READ */ -void et1310_phy_access_mii_bit(struct et131x_adapter *adapter, u16 action, - u16 regnum, u16 bitnum, u8 *value) -{ - u16 reg; - u16 mask = 0x0001 << bitnum; - - /* Read the requested register */ - et131x_mii_read(adapter, regnum, ®); - - switch (action) { - case TRUEPHY_BIT_READ: - *value = (reg & mask) >> bitnum; - break; - - case TRUEPHY_BIT_SET: - et131x_mii_write(adapter, regnum, reg | mask); - break; - - case TRUEPHY_BIT_CLEAR: - et131x_mii_write(adapter, regnum, reg & ~mask); - break; - - default: - break; - } -} - -/** - * et131x_xcvr_init - Init the phy if we are setting it into force mode - * @adapter: pointer to our private adapter structure - * - */ -void et131x_xcvr_init(struct et131x_adapter *adapter) -{ - u16 imr; - u16 isr; - u16 lcr2; - - et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, &isr); - et131x_mii_read(adapter, PHY_INTERRUPT_MASK, &imr); - - /* Set the link status interrupt only. Bad behavior when link status - * and auto neg are set, we run into a nested interrupt problem - */ - imr |= (ET_PHY_INT_MASK_AUTONEGSTAT & - ET_PHY_INT_MASK_LINKSTAT & - ET_PHY_INT_MASK_ENABLE); - - et131x_mii_write(adapter, PHY_INTERRUPT_MASK, imr); - - /* Set the LED behavior such that LED 1 indicates speed (off = - * 10Mbits, blink = 100Mbits, on = 1000Mbits) and LED 2 indicates - * link and activity (on for link, blink off for activity). - * - * NOTE: Some customizations have been added here for specific - * vendors; The LED behavior is now determined by vendor data in the - * EEPROM. However, the above description is the default. - */ - if ((adapter->eeprom_data[1] & 0x4) == 0) { - et131x_mii_read(adapter, PHY_LED_2, &lcr2); - - lcr2 &= (ET_LED2_LED_100TX & ET_LED2_LED_1000T); - lcr2 |= (LED_VAL_LINKON_ACTIVE << LED_LINK_SHIFT); - - if ((adapter->eeprom_data[1] & 0x8) == 0) - lcr2 |= (LED_VAL_1000BT_100BTX << LED_TXRX_SHIFT); - else - lcr2 |= (LED_VAL_LINKON << LED_TXRX_SHIFT); - - et131x_mii_write(adapter, PHY_LED_2, lcr2); - } -} - diff --git a/drivers/staging/et131x/et1310_pm.c b/drivers/staging/et131x/et1310_pm.c deleted file mode 100644 index 91d47dc2ccdf..000000000000 --- a/drivers/staging/et131x/et1310_pm.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_pm.c - All power management related code (not completely implemented) - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et1310_rx.h" -#include "et131x_adapter.h" -#include "et131x.h" - -/** - * et1310_in_phy_coma - check if the device is in phy coma - * @adapter: pointer to our adapter structure - * - * Returns 0 if the device is not in phy coma, 1 if it is in phy coma - */ -int et1310_in_phy_coma(struct et131x_adapter *adapter) -{ - u32 pmcsr; - - pmcsr = readl(&adapter->regs->global.pm_csr); - - return ET_PM_PHY_SW_COMA & pmcsr ? 1 : 0; -} - -/** - * et1310_enable_phy_coma - called when network cable is unplugged - * @adapter: pointer to our adapter structure - * - * driver receive an phy status change interrupt while in D0 and check that - * phy_status is down. - * - * -- gate off JAGCore; - * -- set gigE PHY in Coma mode - * -- wake on phy_interrupt; Perform software reset JAGCore, - * re-initialize jagcore and gigE PHY - * - * Add D0-ASPM-PhyLinkDown Support: - * -- while in D0, when there is a phy_interrupt indicating phy link - * down status, call the MPSetPhyComa routine to enter this active - * state power saving mode - * -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt - * indicating linkup status, call the MPDisablePhyComa routine to - * restore JAGCore and gigE PHY - */ -void et1310_enable_phy_coma(struct et131x_adapter *adapter) -{ - unsigned long flags; - u32 pmcsr; - - pmcsr = readl(&adapter->regs->global.pm_csr); - - /* Save the GbE PHY speed and duplex modes. Need to restore this - * when cable is plugged back in - */ - /* - * TODO - when PM is re-enabled, check if we need to - * perform a similar task as this - - * adapter->pdown_speed = adapter->ai_force_speed; - * adapter->pdown_duplex = adapter->ai_force_duplex; - */ - - /* Stop sending packets. */ - spin_lock_irqsave(&adapter->send_hw_lock, flags); - adapter->flags |= fMP_ADAPTER_LOWER_POWER; - spin_unlock_irqrestore(&adapter->send_hw_lock, flags); - - /* Wait for outstanding Receive packets */ - - et131x_disable_txrx(adapter->netdev); - - /* Gate off JAGCore 3 clock domains */ - pmcsr &= ~ET_PMCSR_INIT; - writel(pmcsr, &adapter->regs->global.pm_csr); - - /* Program gigE PHY in to Coma mode */ - pmcsr |= ET_PM_PHY_SW_COMA; - writel(pmcsr, &adapter->regs->global.pm_csr); -} - -/** - * et1310_disable_phy_coma - Disable the Phy Coma Mode - * @adapter: pointer to our adapter structure - */ -void et1310_disable_phy_coma(struct et131x_adapter *adapter) -{ - u32 pmcsr; - - pmcsr = readl(&adapter->regs->global.pm_csr); - - /* Disable phy_sw_coma register and re-enable JAGCore clocks */ - pmcsr |= ET_PMCSR_INIT; - pmcsr &= ~ET_PM_PHY_SW_COMA; - writel(pmcsr, &adapter->regs->global.pm_csr); - - /* Restore the GbE PHY speed and duplex modes; - * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY - */ - /* TODO - when PM is re-enabled, check if we need to - * perform a similar task as this - - * adapter->ai_force_speed = adapter->pdown_speed; - * adapter->ai_force_duplex = adapter->pdown_duplex; - */ - - /* Re-initialize the send structures */ - et131x_init_send(adapter); - - /* Reset the RFD list and re-start RU */ - et131x_reset_recv(adapter); - - /* Bring the device back to the state it was during init prior to - * autonegotiation being complete. This way, when we get the auto-neg - * complete interrupt, we can complete init by calling ConfigMacREGS2. - */ - et131x_soft_reset(adapter); - - /* setup et1310 as per the documentation ?? */ - et131x_adapter_setup(adapter); - - /* Allow Tx to restart */ - adapter->flags &= ~fMP_ADAPTER_LOWER_POWER; - - et131x_enable_txrx(adapter->netdev); -} - diff --git a/drivers/staging/et131x/et1310_rx.c b/drivers/staging/et131x/et1310_rx.c deleted file mode 100644 index 814922bbff05..000000000000 --- a/drivers/staging/et131x/et1310_rx.c +++ /dev/null @@ -1,1160 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_rx.c - Routines used to perform data reception - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et131x_adapter.h" -#include "et1310_rx.h" -#include "et131x.h" - -static inline u32 bump_free_buff_ring(u32 *free_buff_ring, u32 limit) -{ - u32 tmp_free_buff_ring = *free_buff_ring; - tmp_free_buff_ring++; - /* This works for all cases where limit < 1024. The 1023 case - works because 1023++ is 1024 which means the if condition is not - taken but the carry of the bit into the wrap bit toggles the wrap - value correctly */ - if ((tmp_free_buff_ring & ET_DMA10_MASK) > limit) { - tmp_free_buff_ring &= ~ET_DMA10_MASK; - tmp_free_buff_ring ^= ET_DMA10_WRAP; - } - /* For the 1023 case */ - tmp_free_buff_ring &= (ET_DMA10_MASK|ET_DMA10_WRAP); - *free_buff_ring = tmp_free_buff_ring; - return tmp_free_buff_ring; -} - -/** - * et131x_rx_dma_memory_alloc - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success and errno on failure (as defined in errno.h) - * - * Allocates Free buffer ring 1 for sure, free buffer ring 0 if required, - * and the Packet Status Ring. - */ -int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter) -{ - u32 i, j; - u32 bufsize; - u32 pktstat_ringsize, fbr_chunksize; - struct rx_ring *rx_ring; - - /* Setup some convenience pointers */ - rx_ring = &adapter->rx_ring; - - /* Alloc memory for the lookup table */ -#ifdef USE_FBR0 - rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL); -#endif - rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL); - - /* The first thing we will do is configure the sizes of the buffer - * rings. These will change based on jumbo packet support. Larger - * jumbo packets increases the size of each entry in FBR0, and the - * number of entries in FBR0, while at the same time decreasing the - * number of entries in FBR1. - * - * FBR1 holds "large" frames, FBR0 holds "small" frames. If FBR1 - * entries are huge in order to accommodate a "jumbo" frame, then it - * will have less entries. Conversely, FBR1 will now be relied upon - * to carry more "normal" frames, thus it's entry size also increases - * and the number of entries goes up too (since it now carries - * "small" + "regular" packets. - * - * In this scheme, we try to maintain 512 entries between the two - * rings. Also, FBR1 remains a constant size - when it's size doubles - * the number of entries halves. FBR0 increases in size, however. - */ - - if (adapter->registry_jumbo_packet < 2048) { -#ifdef USE_FBR0 - rx_ring->fbr0_buffsize = 256; - rx_ring->fbr0_num_entries = 512; -#endif - rx_ring->fbr1_buffsize = 2048; - rx_ring->fbr1_num_entries = 512; - } else if (adapter->registry_jumbo_packet < 4096) { -#ifdef USE_FBR0 - rx_ring->fbr0_buffsize = 512; - rx_ring->fbr0_num_entries = 1024; -#endif - rx_ring->fbr1_buffsize = 4096; - rx_ring->fbr1_num_entries = 512; - } else { -#ifdef USE_FBR0 - rx_ring->fbr0_buffsize = 1024; - rx_ring->fbr0_num_entries = 768; -#endif - rx_ring->fbr1_buffsize = 16384; - rx_ring->fbr1_num_entries = 128; - } - -#ifdef USE_FBR0 - adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr0_num_entries + - adapter->rx_ring.fbr1_num_entries; -#else - adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr1_num_entries; -#endif - - /* Allocate an area of memory for Free Buffer Ring 1 */ - bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + 0xfff; - rx_ring->fbr1_ring_virtaddr = pci_alloc_consistent(adapter->pdev, - bufsize, - &rx_ring->fbr1_ring_physaddr); - if (!rx_ring->fbr1_ring_virtaddr) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Free Buffer Ring 1\n"); - return -ENOMEM; - } - - /* Save physical address - * - * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, - * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses - * are ever returned, make sure the high part is retrieved here - * before storing the adjusted address. - */ - rx_ring->fbr1_real_physaddr = rx_ring->fbr1_ring_physaddr; - - /* Align Free Buffer Ring 1 on a 4K boundary */ - et131x_align_allocated_memory(adapter, - &rx_ring->fbr1_real_physaddr, - &rx_ring->fbr1_offset, 0x0FFF); - - rx_ring->fbr1_ring_virtaddr = - (void *)((u8 *) rx_ring->fbr1_ring_virtaddr + - rx_ring->fbr1_offset); - -#ifdef USE_FBR0 - /* Allocate an area of memory for Free Buffer Ring 0 */ - bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + 0xfff; - rx_ring->fbr0_ring_virtaddr = pci_alloc_consistent(adapter->pdev, - bufsize, - &rx_ring->fbr0_ring_physaddr); - if (!rx_ring->fbr0_ring_virtaddr) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Free Buffer Ring 0\n"); - return -ENOMEM; - } - - /* Save physical address - * - * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, - * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses - * are ever returned, make sure the high part is retrieved here before - * storing the adjusted address. - */ - rx_ring->fbr0_real_physaddr = rx_ring->fbr0_ring_physaddr; - - /* Align Free Buffer Ring 0 on a 4K boundary */ - et131x_align_allocated_memory(adapter, - &rx_ring->fbr0_real_physaddr, - &rx_ring->fbr0_offset, 0x0FFF); - - rx_ring->fbr0_ring_virtaddr = - (void *)((u8 *) rx_ring->fbr0_ring_virtaddr + - rx_ring->fbr0_offset); -#endif - for (i = 0; i < (rx_ring->fbr1_num_entries / FBR_CHUNKS); i++) { - u64 fbr1_offset; - u64 fbr1_tmp_physaddr; - u32 fbr1_align; - - /* This code allocates an area of memory big enough for N - * free buffers + (buffer_size - 1) so that the buffers can - * be aligned on 4k boundaries. If each buffer were aligned - * to a buffer_size boundary, the effect would be to double - * the size of FBR0. By allocating N buffers at once, we - * reduce this overhead. - */ - if (rx_ring->fbr1_buffsize > 4096) - fbr1_align = 4096; - else - fbr1_align = rx_ring->fbr1_buffsize; - - fbr_chunksize = - (FBR_CHUNKS * rx_ring->fbr1_buffsize) + fbr1_align - 1; - rx_ring->fbr1_mem_virtaddrs[i] = - pci_alloc_consistent(adapter->pdev, fbr_chunksize, - &rx_ring->fbr1_mem_physaddrs[i]); - - if (!rx_ring->fbr1_mem_virtaddrs[i]) { - dev_err(&adapter->pdev->dev, - "Could not alloc memory\n"); - return -ENOMEM; - } - - /* See NOTE in "Save Physical Address" comment above */ - fbr1_tmp_physaddr = rx_ring->fbr1_mem_physaddrs[i]; - - et131x_align_allocated_memory(adapter, - &fbr1_tmp_physaddr, - &fbr1_offset, (fbr1_align - 1)); - - for (j = 0; j < FBR_CHUNKS; j++) { - u32 index = (i * FBR_CHUNKS) + j; - - /* Save the Virtual address of this index for quick - * access later - */ - rx_ring->fbr[1]->virt[index] = - (u8 *) rx_ring->fbr1_mem_virtaddrs[i] + - (j * rx_ring->fbr1_buffsize) + fbr1_offset; - - /* now store the physical address in the descriptor - * so the device can access it - */ - rx_ring->fbr[1]->bus_high[index] = - (u32) (fbr1_tmp_physaddr >> 32); - rx_ring->fbr[1]->bus_low[index] = - (u32) fbr1_tmp_physaddr; - - fbr1_tmp_physaddr += rx_ring->fbr1_buffsize; - - rx_ring->fbr[1]->buffer1[index] = - rx_ring->fbr[1]->virt[index]; - rx_ring->fbr[1]->buffer2[index] = - rx_ring->fbr[1]->virt[index] - 4; - } - } - -#ifdef USE_FBR0 - /* Same for FBR0 (if in use) */ - for (i = 0; i < (rx_ring->fbr0_num_entries / FBR_CHUNKS); i++) { - u64 fbr0_offset; - u64 fbr0_tmp_physaddr; - - fbr_chunksize = - ((FBR_CHUNKS + 1) * rx_ring->fbr0_buffsize) - 1; - rx_ring->fbr0_mem_virtaddrs[i] = - pci_alloc_consistent(adapter->pdev, fbr_chunksize, - &rx_ring->fbr0_mem_physaddrs[i]); - - if (!rx_ring->fbr0_mem_virtaddrs[i]) { - dev_err(&adapter->pdev->dev, - "Could not alloc memory\n"); - return -ENOMEM; - } - - /* See NOTE in "Save Physical Address" comment above */ - fbr0_tmp_physaddr = rx_ring->fbr0_mem_physaddrs[i]; - - et131x_align_allocated_memory(adapter, - &fbr0_tmp_physaddr, - &fbr0_offset, - rx_ring->fbr0_buffsize - 1); - - for (j = 0; j < FBR_CHUNKS; j++) { - u32 index = (i * FBR_CHUNKS) + j; - - rx_ring->fbr[0]->virt[index] = - (u8 *) rx_ring->fbr0_mem_virtaddrs[i] + - (j * rx_ring->fbr0_buffsize) + fbr0_offset; - - rx_ring->fbr[0]->bus_high[index] = - (u32) (fbr0_tmp_physaddr >> 32); - rx_ring->fbr[0]->bus_low[index] = - (u32) fbr0_tmp_physaddr; - - fbr0_tmp_physaddr += rx_ring->fbr0_buffsize; - - rx_ring->fbr[0]->buffer1[index] = - rx_ring->fbr[0]->virt[index]; - rx_ring->fbr[0]->buffer2[index] = - rx_ring->fbr[0]->virt[index] - 4; - } - } -#endif - - /* Allocate an area of memory for FIFO of Packet Status ring entries */ - pktstat_ringsize = - sizeof(struct pkt_stat_desc) * adapter->rx_ring.psr_num_entries; - - rx_ring->ps_ring_virtaddr = pci_alloc_consistent(adapter->pdev, - pktstat_ringsize, - &rx_ring->ps_ring_physaddr); - - if (!rx_ring->ps_ring_virtaddr) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Packet Status Ring\n"); - return -ENOMEM; - } - printk(KERN_INFO "Packet Status Ring %lx\n", - (unsigned long) rx_ring->ps_ring_physaddr); - - /* - * NOTE : pci_alloc_consistent(), used above to alloc DMA regions, - * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses - * are ever returned, make sure the high part is retrieved here before - * storing the adjusted address. - */ - - /* Allocate an area of memory for writeback of status information */ - rx_ring->rx_status_block = pci_alloc_consistent(adapter->pdev, - sizeof(struct rx_status_block), - &rx_ring->rx_status_bus); - if (!rx_ring->rx_status_block) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Status Block\n"); - return -ENOMEM; - } - rx_ring->num_rfd = NIC_DEFAULT_NUM_RFD; - printk(KERN_INFO "PRS %lx\n", (unsigned long)rx_ring->rx_status_bus); - - /* Recv - * pci_pool_create initializes a lookaside list. After successful - * creation, nonpaged fixed-size blocks can be allocated from and - * freed to the lookaside list. - * RFDs will be allocated from this pool. - */ - rx_ring->recv_lookaside = kmem_cache_create(adapter->netdev->name, - sizeof(struct rfd), - 0, - SLAB_CACHE_DMA | - SLAB_HWCACHE_ALIGN, - NULL); - - adapter->flags |= fMP_ADAPTER_RECV_LOOKASIDE; - - /* The RFDs are going to be put on lists later on, so initialize the - * lists now. - */ - INIT_LIST_HEAD(&rx_ring->recv_list); - return 0; -} - -/** - * et131x_rx_dma_memory_free - Free all memory allocated within this module. - * @adapter: pointer to our private adapter structure - */ -void et131x_rx_dma_memory_free(struct et131x_adapter *adapter) -{ - u32 index; - u32 bufsize; - u32 pktstat_ringsize; - struct rfd *rfd; - struct rx_ring *rx_ring; - - /* Setup some convenience pointers */ - rx_ring = &adapter->rx_ring; - - /* Free RFDs and associated packet descriptors */ - WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd); - - while (!list_empty(&rx_ring->recv_list)) { - rfd = (struct rfd *) list_entry(rx_ring->recv_list.next, - struct rfd, list_node); - - list_del(&rfd->list_node); - rfd->skb = NULL; - kmem_cache_free(adapter->rx_ring.recv_lookaside, rfd); - } - - /* Free Free Buffer Ring 1 */ - if (rx_ring->fbr1_ring_virtaddr) { - /* First the packet memory */ - for (index = 0; index < - (rx_ring->fbr1_num_entries / FBR_CHUNKS); index++) { - if (rx_ring->fbr1_mem_virtaddrs[index]) { - u32 fbr1_align; - - if (rx_ring->fbr1_buffsize > 4096) - fbr1_align = 4096; - else - fbr1_align = rx_ring->fbr1_buffsize; - - bufsize = - (rx_ring->fbr1_buffsize * FBR_CHUNKS) + - fbr1_align - 1; - - pci_free_consistent(adapter->pdev, - bufsize, - rx_ring->fbr1_mem_virtaddrs[index], - rx_ring->fbr1_mem_physaddrs[index]); - - rx_ring->fbr1_mem_virtaddrs[index] = NULL; - } - } - - /* Now the FIFO itself */ - rx_ring->fbr1_ring_virtaddr = (void *)((u8 *) - rx_ring->fbr1_ring_virtaddr - rx_ring->fbr1_offset); - - bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) - + 0xfff; - - pci_free_consistent(adapter->pdev, bufsize, - rx_ring->fbr1_ring_virtaddr, - rx_ring->fbr1_ring_physaddr); - - rx_ring->fbr1_ring_virtaddr = NULL; - } - -#ifdef USE_FBR0 - /* Now the same for Free Buffer Ring 0 */ - if (rx_ring->fbr0_ring_virtaddr) { - /* First the packet memory */ - for (index = 0; index < - (rx_ring->fbr0_num_entries / FBR_CHUNKS); index++) { - if (rx_ring->fbr0_mem_virtaddrs[index]) { - bufsize = - (rx_ring->fbr0_buffsize * - (FBR_CHUNKS + 1)) - 1; - - pci_free_consistent(adapter->pdev, - bufsize, - rx_ring->fbr0_mem_virtaddrs[index], - rx_ring->fbr0_mem_physaddrs[index]); - - rx_ring->fbr0_mem_virtaddrs[index] = NULL; - } - } - - /* Now the FIFO itself */ - rx_ring->fbr0_ring_virtaddr = (void *)((u8 *) - rx_ring->fbr0_ring_virtaddr - rx_ring->fbr0_offset); - - bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) - + 0xfff; - - pci_free_consistent(adapter->pdev, - bufsize, - rx_ring->fbr0_ring_virtaddr, - rx_ring->fbr0_ring_physaddr); - - rx_ring->fbr0_ring_virtaddr = NULL; - } -#endif - - /* Free Packet Status Ring */ - if (rx_ring->ps_ring_virtaddr) { - pktstat_ringsize = - sizeof(struct pkt_stat_desc) * - adapter->rx_ring.psr_num_entries; - - pci_free_consistent(adapter->pdev, pktstat_ringsize, - rx_ring->ps_ring_virtaddr, - rx_ring->ps_ring_physaddr); - - rx_ring->ps_ring_virtaddr = NULL; - } - - /* Free area of memory for the writeback of status information */ - if (rx_ring->rx_status_block) { - pci_free_consistent(adapter->pdev, - sizeof(struct rx_status_block), - rx_ring->rx_status_block, rx_ring->rx_status_bus); - rx_ring->rx_status_block = NULL; - } - - /* Free receive buffer pool */ - - /* Free receive packet pool */ - - /* Destroy the lookaside (RFD) pool */ - if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) { - kmem_cache_destroy(rx_ring->recv_lookaside); - adapter->flags &= ~fMP_ADAPTER_RECV_LOOKASIDE; - } - - /* Free the FBR Lookup Table */ -#ifdef USE_FBR0 - kfree(rx_ring->fbr[0]); -#endif - - kfree(rx_ring->fbr[1]); - - /* Reset Counters */ - rx_ring->num_ready_recv = 0; -} - -/** - * et131x_init_recv - Initialize receive data structures. - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success and errno on failure (as defined in errno.h) - */ -int et131x_init_recv(struct et131x_adapter *adapter) -{ - int status = -ENOMEM; - struct rfd *rfd = NULL; - u32 rfdct; - u32 numrfd = 0; - struct rx_ring *rx_ring; - - /* Setup some convenience pointers */ - rx_ring = &adapter->rx_ring; - - /* Setup each RFD */ - for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) { - rfd = kmem_cache_alloc(rx_ring->recv_lookaside, - GFP_ATOMIC | GFP_DMA); - - if (!rfd) { - dev_err(&adapter->pdev->dev, - "Couldn't alloc RFD out of kmem_cache\n"); - status = -ENOMEM; - continue; - } - - rfd->skb = NULL; - - /* Add this RFD to the recv_list */ - list_add_tail(&rfd->list_node, &rx_ring->recv_list); - - /* Increment both the available RFD's, and the total RFD's. */ - rx_ring->num_ready_recv++; - numrfd++; - } - - if (numrfd > NIC_MIN_NUM_RFD) - status = 0; - - rx_ring->num_rfd = numrfd; - - if (status != 0) { - kmem_cache_free(rx_ring->recv_lookaside, rfd); - dev_err(&adapter->pdev->dev, - "Allocation problems in et131x_init_recv\n"); - } - return status; -} - -/** - * et131x_config_rx_dma_regs - Start of Rx_DMA init sequence - * @adapter: pointer to our adapter structure - */ -void et131x_config_rx_dma_regs(struct et131x_adapter *adapter) -{ - struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma; - struct rx_ring *rx_local = &adapter->rx_ring; - struct fbr_desc *fbr_entry; - u32 entry; - u32 psr_num_des; - unsigned long flags; - - /* Halt RXDMA to perform the reconfigure. */ - et131x_rx_dma_disable(adapter); - - /* Load the completion writeback physical address - * - * NOTE : pci_alloc_consistent(), used above to alloc DMA regions, - * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses - * are ever returned, make sure the high part is retrieved here - * before storing the adjusted address. - */ - writel((u32) ((u64)rx_local->rx_status_bus >> 32), - &rx_dma->dma_wb_base_hi); - writel((u32) rx_local->rx_status_bus, &rx_dma->dma_wb_base_lo); - - memset(rx_local->rx_status_block, 0, sizeof(struct rx_status_block)); - - /* Set the address and parameters of the packet status ring into the - * 1310's registers - */ - writel((u32) ((u64)rx_local->ps_ring_physaddr >> 32), - &rx_dma->psr_base_hi); - writel((u32) rx_local->ps_ring_physaddr, &rx_dma->psr_base_lo); - writel(rx_local->psr_num_entries - 1, &rx_dma->psr_num_des); - writel(0, &rx_dma->psr_full_offset); - - psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF; - writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100, - &rx_dma->psr_min_des); - - spin_lock_irqsave(&adapter->rcv_lock, flags); - - /* These local variables track the PSR in the adapter structure */ - rx_local->local_psr_full = 0; - - /* Now's the best time to initialize FBR1 contents */ - fbr_entry = (struct fbr_desc *) rx_local->fbr1_ring_virtaddr; - for (entry = 0; entry < rx_local->fbr1_num_entries; entry++) { - fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry]; - fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry]; - fbr_entry->word2 = entry; - fbr_entry++; - } - - /* Set the address and parameters of Free buffer ring 1 (and 0 if - * required) into the 1310's registers - */ - writel((u32) (rx_local->fbr1_real_physaddr >> 32), - &rx_dma->fbr1_base_hi); - writel((u32) rx_local->fbr1_real_physaddr, &rx_dma->fbr1_base_lo); - writel(rx_local->fbr1_num_entries - 1, &rx_dma->fbr1_num_des); - writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset); - - /* This variable tracks the free buffer ring 1 full position, so it - * has to match the above. - */ - rx_local->local_fbr1_full = ET_DMA10_WRAP; - writel( - ((rx_local->fbr1_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1, - &rx_dma->fbr1_min_des); - -#ifdef USE_FBR0 - /* Now's the best time to initialize FBR0 contents */ - fbr_entry = (struct fbr_desc *) rx_local->fbr0_ring_virtaddr; - for (entry = 0; entry < rx_local->fbr0_num_entries; entry++) { - fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry]; - fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry]; - fbr_entry->word2 = entry; - fbr_entry++; - } - - writel((u32) (rx_local->fbr0_real_physaddr >> 32), - &rx_dma->fbr0_base_hi); - writel((u32) rx_local->fbr0_real_physaddr, &rx_dma->fbr0_base_lo); - writel(rx_local->fbr0_num_entries - 1, &rx_dma->fbr0_num_des); - writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset); - - /* This variable tracks the free buffer ring 0 full position, so it - * has to match the above. - */ - rx_local->local_fbr0_full = ET_DMA10_WRAP; - writel( - ((rx_local->fbr0_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1, - &rx_dma->fbr0_min_des); -#endif - - /* Program the number of packets we will receive before generating an - * interrupt. - * For version B silicon, this value gets updated once autoneg is - *complete. - */ - writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done); - - /* The "time_done" is not working correctly to coalesce interrupts - * after a given time period, but rather is giving us an interrupt - * regardless of whether we have received packets. - * This value gets updated once autoneg is complete. - */ - writel(PARM_RX_TIME_INT_DEF, &rx_dma->max_pkt_time); - - spin_unlock_irqrestore(&adapter->rcv_lock, flags); -} - -/** - * et131x_set_rx_dma_timer - Set the heartbeat timer according to line rate. - * @adapter: pointer to our adapter structure - */ -void et131x_set_rx_dma_timer(struct et131x_adapter *adapter) -{ - struct phy_device *phydev = adapter->phydev; - - if (!phydev) - return; - - /* For version B silicon, we do not use the RxDMA timer for 10 and 100 - * Mbits/s line rates. We do not enable and RxDMA interrupt coalescing. - */ - if ((phydev->speed == SPEED_100) || (phydev->speed == SPEED_10)) { - writel(0, &adapter->regs->rxdma.max_pkt_time); - writel(1, &adapter->regs->rxdma.num_pkt_done); - } -} - -/** - * NICReturnRFD - Recycle a RFD and put it back onto the receive list - * @adapter: pointer to our adapter - * @rfd: pointer to the RFD - */ -static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd) -{ - struct rx_ring *rx_local = &adapter->rx_ring; - struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma; - u16 buff_index = rfd->bufferindex; - u8 ring_index = rfd->ringindex; - unsigned long flags; - - /* We don't use any of the OOB data besides status. Otherwise, we - * need to clean up OOB data - */ - if ( -#ifdef USE_FBR0 - (ring_index == 0 && buff_index < rx_local->fbr0_num_entries) || -#endif - (ring_index == 1 && buff_index < rx_local->fbr1_num_entries)) { - spin_lock_irqsave(&adapter->fbr_lock, flags); - - if (ring_index == 1) { - struct fbr_desc *next = - (struct fbr_desc *) (rx_local->fbr1_ring_virtaddr) + - INDEX10(rx_local->local_fbr1_full); - - /* Handle the Free Buffer Ring advancement here. Write - * the PA / Buffer Index for the returned buffer into - * the oldest (next to be freed)FBR entry - */ - next->addr_hi = rx_local->fbr[1]->bus_high[buff_index]; - next->addr_lo = rx_local->fbr[1]->bus_low[buff_index]; - next->word2 = buff_index; - - writel(bump_free_buff_ring(&rx_local->local_fbr1_full, - rx_local->fbr1_num_entries - 1), - &rx_dma->fbr1_full_offset); - } -#ifdef USE_FBR0 - else { - struct fbr_desc *next = (struct fbr_desc *) - rx_local->fbr0_ring_virtaddr + - INDEX10(rx_local->local_fbr0_full); - - /* Handle the Free Buffer Ring advancement here. Write - * the PA / Buffer Index for the returned buffer into - * the oldest (next to be freed) FBR entry - */ - next->addr_hi = rx_local->fbr[0]->bus_high[buff_index]; - next->addr_lo = rx_local->fbr[0]->bus_low[buff_index]; - next->word2 = buff_index; - - writel(bump_free_buff_ring(&rx_local->local_fbr0_full, - rx_local->fbr0_num_entries - 1), - &rx_dma->fbr0_full_offset); - } -#endif - spin_unlock_irqrestore(&adapter->fbr_lock, flags); - } else { - dev_err(&adapter->pdev->dev, - "%s illegal Buffer Index returned\n", __func__); - } - - /* The processing on this RFD is done, so put it back on the tail of - * our list - */ - spin_lock_irqsave(&adapter->rcv_lock, flags); - list_add_tail(&rfd->list_node, &rx_local->recv_list); - rx_local->num_ready_recv++; - spin_unlock_irqrestore(&adapter->rcv_lock, flags); - - WARN_ON(rx_local->num_ready_recv > rx_local->num_rfd); -} - -/** - * et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310 - * @adapter: pointer to our adapter structure - */ -void et131x_rx_dma_disable(struct et131x_adapter *adapter) -{ - u32 csr; - /* Setup the receive dma configuration register */ - writel(0x00002001, &adapter->regs->rxdma.csr); - csr = readl(&adapter->regs->rxdma.csr); - if ((csr & 0x00020000) == 0) { /* Check halt status (bit 17) */ - udelay(5); - csr = readl(&adapter->regs->rxdma.csr); - if ((csr & 0x00020000) == 0) - dev_err(&adapter->pdev->dev, - "RX Dma failed to enter halt state. CSR 0x%08x\n", - csr); - } -} - -/** - * et131x_rx_dma_enable - re-start of Rx_DMA on the ET1310. - * @adapter: pointer to our adapter structure - */ -void et131x_rx_dma_enable(struct et131x_adapter *adapter) -{ - /* Setup the receive dma configuration register for normal operation */ - u32 csr = 0x2000; /* FBR1 enable */ - - if (adapter->rx_ring.fbr1_buffsize == 4096) - csr |= 0x0800; - else if (adapter->rx_ring.fbr1_buffsize == 8192) - csr |= 0x1000; - else if (adapter->rx_ring.fbr1_buffsize == 16384) - csr |= 0x1800; -#ifdef USE_FBR0 - csr |= 0x0400; /* FBR0 enable */ - if (adapter->rx_ring.fbr0_buffsize == 256) - csr |= 0x0100; - else if (adapter->rx_ring.fbr0_buffsize == 512) - csr |= 0x0200; - else if (adapter->rx_ring.fbr0_buffsize == 1024) - csr |= 0x0300; -#endif - writel(csr, &adapter->regs->rxdma.csr); - - csr = readl(&adapter->regs->rxdma.csr); - if ((csr & 0x00020000) != 0) { - udelay(5); - csr = readl(&adapter->regs->rxdma.csr); - if ((csr & 0x00020000) != 0) { - dev_err(&adapter->pdev->dev, - "RX Dma failed to exit halt state. CSR 0x%08x\n", - csr); - } - } -} - -/** - * nic_rx_pkts - Checks the hardware for available packets - * @adapter: pointer to our adapter - * - * Returns rfd, a pointer to our MPRFD. - * - * Checks the hardware for available packets, using completion ring - * If packets are available, it gets an RFD from the recv_list, attaches - * the packet to it, puts the RFD in the RecvPendList, and also returns - * the pointer to the RFD. - */ -static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter) -{ - struct rx_ring *rx_local = &adapter->rx_ring; - struct rx_status_block *status; - struct pkt_stat_desc *psr; - struct rfd *rfd; - u32 i; - u8 *buf; - unsigned long flags; - struct list_head *element; - u8 ring_index; - u16 buff_index; - u32 len; - u32 word0; - u32 word1; - - /* RX Status block is written by the DMA engine prior to every - * interrupt. It contains the next to be used entry in the Packet - * Status Ring, and also the two Free Buffer rings. - */ - status = rx_local->rx_status_block; - word1 = status->word1 >> 16; /* Get the useful bits */ - - /* Check the PSR and wrap bits do not match */ - if ((word1 & 0x1FFF) == (rx_local->local_psr_full & 0x1FFF)) - /* Looks like this ring is not updated yet */ - return NULL; - - /* The packet status ring indicates that data is available. */ - psr = (struct pkt_stat_desc *) (rx_local->ps_ring_virtaddr) + - (rx_local->local_psr_full & 0xFFF); - - /* Grab any information that is required once the PSR is - * advanced, since we can no longer rely on the memory being - * accurate - */ - len = psr->word1 & 0xFFFF; - ring_index = (psr->word1 >> 26) & 0x03; - buff_index = (psr->word1 >> 16) & 0x3FF; - word0 = psr->word0; - - /* Indicate that we have used this PSR entry. */ - /* FIXME wrap 12 */ - add_12bit(&rx_local->local_psr_full, 1); - if ( - (rx_local->local_psr_full & 0xFFF) > rx_local->psr_num_entries - 1) { - /* Clear psr full and toggle the wrap bit */ - rx_local->local_psr_full &= ~0xFFF; - rx_local->local_psr_full ^= 0x1000; - } - - writel(rx_local->local_psr_full, - &adapter->regs->rxdma.psr_full_offset); - -#ifndef USE_FBR0 - if (ring_index != 1) - return NULL; -#endif - -#ifdef USE_FBR0 - if (ring_index > 1 || - (ring_index == 0 && - buff_index > rx_local->fbr0_num_entries - 1) || - (ring_index == 1 && - buff_index > rx_local->fbr1_num_entries - 1)) -#else - if (ring_index != 1 || buff_index > rx_local->fbr1_num_entries - 1) -#endif - { - /* Illegal buffer or ring index cannot be used by S/W*/ - dev_err(&adapter->pdev->dev, - "NICRxPkts PSR Entry %d indicates " - "length of %d and/or bad bi(%d)\n", - rx_local->local_psr_full & 0xFFF, - len, buff_index); - return NULL; - } - - /* Get and fill the RFD. */ - spin_lock_irqsave(&adapter->rcv_lock, flags); - - rfd = NULL; - element = rx_local->recv_list.next; - rfd = (struct rfd *) list_entry(element, struct rfd, list_node); - - if (rfd == NULL) { - spin_unlock_irqrestore(&adapter->rcv_lock, flags); - return NULL; - } - - list_del(&rfd->list_node); - rx_local->num_ready_recv--; - - spin_unlock_irqrestore(&adapter->rcv_lock, flags); - - rfd->bufferindex = buff_index; - rfd->ringindex = ring_index; - - /* In V1 silicon, there is a bug which screws up filtering of - * runt packets. Therefore runt packet filtering is disabled - * in the MAC and the packets are dropped here. They are - * also counted here. - */ - if (len < (NIC_MIN_PACKET_SIZE + 4)) { - adapter->stats.rx_other_errs++; - len = 0; - } - - if (len) { - /* Determine if this is a multicast packet coming in */ - if ((word0 & ALCATEL_MULTICAST_PKT) && - !(word0 & ALCATEL_BROADCAST_PKT)) { - /* Promiscuous mode and Multicast mode are - * not mutually exclusive as was first - * thought. I guess Promiscuous is just - * considered a super-set of the other - * filters. Generally filter is 0x2b when in - * promiscuous mode. - */ - if ((adapter->packet_filter & - ET131X_PACKET_TYPE_MULTICAST) - && !(adapter->packet_filter & - ET131X_PACKET_TYPE_PROMISCUOUS) - && !(adapter->packet_filter & - ET131X_PACKET_TYPE_ALL_MULTICAST)) { - buf = rx_local->fbr[ring_index]-> - virt[buff_index]; - - /* Loop through our list to see if the - * destination address of this packet - * matches one in our list. - */ - for (i = 0; i < adapter->multicast_addr_count; - i++) { - if (buf[0] == - adapter->multicast_list[i][0] - && buf[1] == - adapter->multicast_list[i][1] - && buf[2] == - adapter->multicast_list[i][2] - && buf[3] == - adapter->multicast_list[i][3] - && buf[4] == - adapter->multicast_list[i][4] - && buf[5] == - adapter->multicast_list[i][5]) { - break; - } - } - - /* If our index is equal to the number - * of Multicast address we have, then - * this means we did not find this - * packet's matching address in our - * list. Set the len to zero, - * so we free our RFD when we return - * from this function. - */ - if (i == adapter->multicast_addr_count) - len = 0; - } - - if (len > 0) - adapter->stats.multicast_pkts_rcvd++; - } else if (word0 & ALCATEL_BROADCAST_PKT) - adapter->stats.broadcast_pkts_rcvd++; - else - /* Not sure what this counter measures in - * promiscuous mode. Perhaps we should check - * the MAC address to see if it is directed - * to us in promiscuous mode. - */ - adapter->stats.unicast_pkts_rcvd++; - } - - if (len > 0) { - struct sk_buff *skb = NULL; - - /*rfd->len = len - 4; */ - rfd->len = len; - - skb = dev_alloc_skb(rfd->len + 2); - if (!skb) { - dev_err(&adapter->pdev->dev, - "Couldn't alloc an SKB for Rx\n"); - return NULL; - } - - adapter->net_stats.rx_bytes += rfd->len; - - memcpy(skb_put(skb, rfd->len), - rx_local->fbr[ring_index]->virt[buff_index], - rfd->len); - - skb->dev = adapter->netdev; - skb->protocol = eth_type_trans(skb, adapter->netdev); - skb->ip_summed = CHECKSUM_NONE; - - netif_rx(skb); - } else { - rfd->len = 0; - } - - nic_return_rfd(adapter, rfd); - return rfd; -} - -/** - * et131x_reset_recv - Reset the receive list - * @adapter: pointer to our adapter - * - * Assumption, Rcv spinlock has been acquired. - */ -void et131x_reset_recv(struct et131x_adapter *adapter) -{ - WARN_ON(list_empty(&adapter->rx_ring.recv_list)); -} - -/** - * et131x_handle_recv_interrupt - Interrupt handler for receive processing - * @adapter: pointer to our adapter - * - * Assumption, Rcv spinlock has been acquired. - */ -void et131x_handle_recv_interrupt(struct et131x_adapter *adapter) -{ - struct rfd *rfd = NULL; - u32 count = 0; - bool done = true; - - /* Process up to available RFD's */ - while (count < NUM_PACKETS_HANDLED) { - if (list_empty(&adapter->rx_ring.recv_list)) { - WARN_ON(adapter->rx_ring.num_ready_recv != 0); - done = false; - break; - } - - rfd = nic_rx_pkts(adapter); - - if (rfd == NULL) - break; - - /* Do not receive any packets until a filter has been set. - * Do not receive any packets until we have link. - * If length is zero, return the RFD in order to advance the - * Free buffer ring. - */ - if (!adapter->packet_filter || - !netif_carrier_ok(adapter->netdev) || - rfd->len == 0) - continue; - - /* Increment the number of packets we received */ - adapter->net_stats.rx_packets++; - - /* Set the status on the packet, either resources or success */ - if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK) { - dev_warn(&adapter->pdev->dev, - "RFD's are running out\n"); - } - count++; - } - - if (count == NUM_PACKETS_HANDLED || !done) { - adapter->rx_ring.unfinished_receives = true; - writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO, - &adapter->regs->global.watchdog_timer); - } else - /* Watchdog timer will disable itself if appropriate. */ - adapter->rx_ring.unfinished_receives = false; -} - diff --git a/drivers/staging/et131x/et1310_tx.c b/drivers/staging/et131x/et1310_tx.c deleted file mode 100644 index cd12500a265d..000000000000 --- a/drivers/staging/et131x/et1310_tx.c +++ /dev/null @@ -1,793 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et1310_tx.c - Routines used to perform data transmission. - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et131x_adapter.h" -#include "et1310_tx.h" -#include "et131x.h" - -/** - * et131x_tx_dma_memory_alloc - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success and errno on failure (as defined in errno.h). - * - * Allocates memory that will be visible both to the device and to the CPU. - * The OS will pass us packets, pointers to which we will insert in the Tx - * Descriptor queue. The device will read this queue to find the packets in - * memory. The device will update the "status" in memory each time it xmits a - * packet. - */ -int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter) -{ - int desc_size = 0; - struct tx_ring *tx_ring = &adapter->tx_ring; - - /* Allocate memory for the TCB's (Transmit Control Block) */ - adapter->tx_ring.tcb_ring = - kcalloc(NUM_TCB, sizeof(struct tcb), GFP_ATOMIC | GFP_DMA); - if (!adapter->tx_ring.tcb_ring) { - dev_err(&adapter->pdev->dev, "Cannot alloc memory for TCBs\n"); - return -ENOMEM; - } - - /* Allocate enough memory for the Tx descriptor ring, and allocate - * some extra so that the ring can be aligned on a 4k boundary. - */ - desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + 4096 - 1; - tx_ring->tx_desc_ring = - (struct tx_desc *) pci_alloc_consistent(adapter->pdev, desc_size, - &tx_ring->tx_desc_ring_pa); - if (!adapter->tx_ring.tx_desc_ring) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Tx Ring\n"); - return -ENOMEM; - } - - /* Save physical address - * - * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, - * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses - * are ever returned, make sure the high part is retrieved here before - * storing the adjusted address. - */ - /* Allocate memory for the Tx status block */ - tx_ring->tx_status = pci_alloc_consistent(adapter->pdev, - sizeof(u32), - &tx_ring->tx_status_pa); - if (!adapter->tx_ring.tx_status_pa) { - dev_err(&adapter->pdev->dev, - "Cannot alloc memory for Tx status block\n"); - return -ENOMEM; - } - return 0; -} - -/** - * et131x_tx_dma_memory_free - Free all memory allocated within this module - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success and errno on failure (as defined in errno.h). - */ -void et131x_tx_dma_memory_free(struct et131x_adapter *adapter) -{ - int desc_size = 0; - - if (adapter->tx_ring.tx_desc_ring) { - /* Free memory relating to Tx rings here */ - desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) - + 4096 - 1; - pci_free_consistent(adapter->pdev, - desc_size, - adapter->tx_ring.tx_desc_ring, - adapter->tx_ring.tx_desc_ring_pa); - adapter->tx_ring.tx_desc_ring = NULL; - } - - /* Free memory for the Tx status block */ - if (adapter->tx_ring.tx_status) { - pci_free_consistent(adapter->pdev, - sizeof(u32), - adapter->tx_ring.tx_status, - adapter->tx_ring.tx_status_pa); - - adapter->tx_ring.tx_status = NULL; - } - /* Free the memory for the tcb structures */ - kfree(adapter->tx_ring.tcb_ring); -} - -/** - * et131x_config_tx_dma_regs - Set up the tx dma section of the JAGCore. - * @adapter: pointer to our private adapter structure - * - * Configure the transmit engine with the ring buffers we have created - * and prepare it for use. - */ -void et131x_config_tx_dma_regs(struct et131x_adapter *adapter) -{ - struct txdma_regs __iomem *txdma = &adapter->regs->txdma; - - /* Load the hardware with the start of the transmit descriptor ring. */ - writel((u32) ((u64)adapter->tx_ring.tx_desc_ring_pa >> 32), - &txdma->pr_base_hi); - writel((u32) adapter->tx_ring.tx_desc_ring_pa, - &txdma->pr_base_lo); - - /* Initialise the transmit DMA engine */ - writel(NUM_DESC_PER_RING_TX - 1, &txdma->pr_num_des); - - /* Load the completion writeback physical address */ - writel((u32)((u64)adapter->tx_ring.tx_status_pa >> 32), - &txdma->dma_wb_base_hi); - writel((u32)adapter->tx_ring.tx_status_pa, &txdma->dma_wb_base_lo); - - *adapter->tx_ring.tx_status = 0; - - writel(0, &txdma->service_request); - adapter->tx_ring.send_idx = 0; -} - -/** - * et131x_tx_dma_disable - Stop of Tx_DMA on the ET1310 - * @adapter: pointer to our adapter structure - */ -void et131x_tx_dma_disable(struct et131x_adapter *adapter) -{ - /* Setup the tramsmit dma configuration register */ - writel(ET_TXDMA_CSR_HALT|ET_TXDMA_SNGL_EPKT, - &adapter->regs->txdma.csr); -} - -/** - * et131x_tx_dma_enable - re-start of Tx_DMA on the ET1310. - * @adapter: pointer to our adapter structure - * - * Mainly used after a return to the D0 (full-power) state from a lower state. - */ -void et131x_tx_dma_enable(struct et131x_adapter *adapter) -{ - /* Setup the transmit dma configuration register for normal - * operation - */ - writel(ET_TXDMA_SNGL_EPKT|(PARM_DMA_CACHE_DEF << ET_TXDMA_CACHE_SHIFT), - &adapter->regs->txdma.csr); -} - -/** - * et131x_init_send - Initialize send data structures - * @adapter: pointer to our private adapter structure - */ -void et131x_init_send(struct et131x_adapter *adapter) -{ - struct tcb *tcb; - u32 ct; - struct tx_ring *tx_ring; - - /* Setup some convenience pointers */ - tx_ring = &adapter->tx_ring; - tcb = adapter->tx_ring.tcb_ring; - - tx_ring->tcb_qhead = tcb; - - memset(tcb, 0, sizeof(struct tcb) * NUM_TCB); - - /* Go through and set up each TCB */ - for (ct = 0; ct++ < NUM_TCB; tcb++) - /* Set the link pointer in HW TCB to the next TCB in the - * chain - */ - tcb->next = tcb + 1; - - /* Set the tail pointer */ - tcb--; - tx_ring->tcb_qtail = tcb; - tcb->next = NULL; - /* Curr send queue should now be empty */ - tx_ring->send_head = NULL; - tx_ring->send_tail = NULL; -} - -/** - * nic_send_packet - NIC specific send handler for version B silicon. - * @adapter: pointer to our adapter - * @tcb: pointer to struct tcb - * - * Returns 0 or errno. - */ -static int nic_send_packet(struct et131x_adapter *adapter, struct tcb *tcb) -{ - u32 i; - struct tx_desc desc[24]; /* 24 x 16 byte */ - u32 frag = 0; - u32 thiscopy, remainder; - struct sk_buff *skb = tcb->skb; - u32 nr_frags = skb_shinfo(skb)->nr_frags + 1; - struct skb_frag_struct *frags = &skb_shinfo(skb)->frags[0]; - unsigned long flags; - struct phy_device *phydev = adapter->phydev; - - /* Part of the optimizations of this send routine restrict us to - * sending 24 fragments at a pass. In practice we should never see - * more than 5 fragments. - * - * NOTE: The older version of this function (below) can handle any - * number of fragments. If needed, we can call this function, - * although it is less efficient. - */ - if (nr_frags > 23) - return -EIO; - - memset(desc, 0, sizeof(struct tx_desc) * (nr_frags + 1)); - - for (i = 0; i < nr_frags; i++) { - /* If there is something in this element, lets get a - * descriptor from the ring and get the necessary data - */ - if (i == 0) { - /* If the fragments are smaller than a standard MTU, - * then map them to a single descriptor in the Tx - * Desc ring. However, if they're larger, as is - * possible with support for jumbo packets, then - * split them each across 2 descriptors. - * - * This will work until we determine why the hardware - * doesn't seem to like large fragments. - */ - if ((skb->len - skb->data_len) <= 1514) { - desc[frag].addr_hi = 0; - /* Low 16bits are length, high is vlan and - unused currently so zero */ - desc[frag].len_vlan = - skb->len - skb->data_len; - - /* NOTE: Here, the dma_addr_t returned from - * pci_map_single() is implicitly cast as a - * u32. Although dma_addr_t can be - * 64-bit, the address returned by - * pci_map_single() is always 32-bit - * addressable (as defined by the pci/dma - * subsystem) - */ - desc[frag++].addr_lo = - pci_map_single(adapter->pdev, - skb->data, - skb->len - - skb->data_len, - PCI_DMA_TODEVICE); - } else { - desc[frag].addr_hi = 0; - desc[frag].len_vlan = - (skb->len - skb->data_len) / 2; - - /* NOTE: Here, the dma_addr_t returned from - * pci_map_single() is implicitly cast as a - * u32. Although dma_addr_t can be - * 64-bit, the address returned by - * pci_map_single() is always 32-bit - * addressable (as defined by the pci/dma - * subsystem) - */ - desc[frag++].addr_lo = - pci_map_single(adapter->pdev, - skb->data, - ((skb->len - - skb->data_len) / 2), - PCI_DMA_TODEVICE); - desc[frag].addr_hi = 0; - - desc[frag].len_vlan = - (skb->len - skb->data_len) / 2; - - /* NOTE: Here, the dma_addr_t returned from - * pci_map_single() is implicitly cast as a - * u32. Although dma_addr_t can be - * 64-bit, the address returned by - * pci_map_single() is always 32-bit - * addressable (as defined by the pci/dma - * subsystem) - */ - desc[frag++].addr_lo = - pci_map_single(adapter->pdev, - skb->data + - ((skb->len - - skb->data_len) / 2), - ((skb->len - - skb->data_len) / 2), - PCI_DMA_TODEVICE); - } - } else { - desc[frag].addr_hi = 0; - desc[frag].len_vlan = - frags[i - 1].size; - - /* NOTE: Here, the dma_addr_t returned from - * pci_map_page() is implicitly cast as a u32. - * Although dma_addr_t can be 64-bit, the address - * returned by pci_map_page() is always 32-bit - * addressable (as defined by the pci/dma subsystem) - */ - desc[frag++].addr_lo = - pci_map_page(adapter->pdev, - frags[i - 1].page, - frags[i - 1].page_offset, - frags[i - 1].size, - PCI_DMA_TODEVICE); - } - } - - if (frag == 0) - return -EIO; - - if (phydev && phydev->speed == SPEED_1000) { - if (++adapter->tx_ring.since_irq == PARM_TX_NUM_BUFS_DEF) { - /* Last element & Interrupt flag */ - desc[frag - 1].flags = 0x5; - adapter->tx_ring.since_irq = 0; - } else { /* Last element */ - desc[frag - 1].flags = 0x1; - } - } else - desc[frag - 1].flags = 0x5; - - desc[0].flags |= 2; /* First element flag */ - - tcb->index_start = adapter->tx_ring.send_idx; - tcb->stale = 0; - - spin_lock_irqsave(&adapter->send_hw_lock, flags); - - thiscopy = NUM_DESC_PER_RING_TX - - INDEX10(adapter->tx_ring.send_idx); - - if (thiscopy >= frag) { - remainder = 0; - thiscopy = frag; - } else { - remainder = frag - thiscopy; - } - - memcpy(adapter->tx_ring.tx_desc_ring + - INDEX10(adapter->tx_ring.send_idx), desc, - sizeof(struct tx_desc) * thiscopy); - - add_10bit(&adapter->tx_ring.send_idx, thiscopy); - - if (INDEX10(adapter->tx_ring.send_idx) == 0 || - INDEX10(adapter->tx_ring.send_idx) == NUM_DESC_PER_RING_TX) { - adapter->tx_ring.send_idx &= ~ET_DMA10_MASK; - adapter->tx_ring.send_idx ^= ET_DMA10_WRAP; - } - - if (remainder) { - memcpy(adapter->tx_ring.tx_desc_ring, - desc + thiscopy, - sizeof(struct tx_desc) * remainder); - - add_10bit(&adapter->tx_ring.send_idx, remainder); - } - - if (INDEX10(adapter->tx_ring.send_idx) == 0) { - if (adapter->tx_ring.send_idx) - tcb->index = NUM_DESC_PER_RING_TX - 1; - else - tcb->index = ET_DMA10_WRAP|(NUM_DESC_PER_RING_TX - 1); - } else - tcb->index = adapter->tx_ring.send_idx - 1; - - spin_lock(&adapter->tcb_send_qlock); - - if (adapter->tx_ring.send_tail) - adapter->tx_ring.send_tail->next = tcb; - else - adapter->tx_ring.send_head = tcb; - - adapter->tx_ring.send_tail = tcb; - - WARN_ON(tcb->next != NULL); - - adapter->tx_ring.used++; - - spin_unlock(&adapter->tcb_send_qlock); - - /* Write the new write pointer back to the device. */ - writel(adapter->tx_ring.send_idx, - &adapter->regs->txdma.service_request); - - /* For Gig only, we use Tx Interrupt coalescing. Enable the software - * timer to wake us up if this packet isn't followed by N more. - */ - if (phydev && phydev->speed == SPEED_1000) { - writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO, - &adapter->regs->global.watchdog_timer); - } - spin_unlock_irqrestore(&adapter->send_hw_lock, flags); - - return 0; -} - -/** - * send_packet - Do the work to send a packet - * @skb: the packet(s) to send - * @adapter: a pointer to the device's private adapter structure - * - * Return 0 in almost all cases; non-zero value in extreme hard failure only. - * - * Assumption: Send spinlock has been acquired - */ -static int send_packet(struct sk_buff *skb, struct et131x_adapter *adapter) -{ - int status; - struct tcb *tcb = NULL; - u16 *shbufva; - unsigned long flags; - - /* All packets must have at least a MAC address and a protocol type */ - if (skb->len < ETH_HLEN) - return -EIO; - - /* Get a TCB for this packet */ - spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); - - tcb = adapter->tx_ring.tcb_qhead; - - if (tcb == NULL) { - spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); - return -ENOMEM; - } - - adapter->tx_ring.tcb_qhead = tcb->next; - - if (adapter->tx_ring.tcb_qhead == NULL) - adapter->tx_ring.tcb_qtail = NULL; - - spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); - - tcb->skb = skb; - - if (skb->data != NULL && skb->len - skb->data_len >= 6) { - shbufva = (u16 *) skb->data; - - if ((shbufva[0] == 0xffff) && - (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) { - tcb->flags |= fMP_DEST_BROAD; - } else if ((shbufva[0] & 0x3) == 0x0001) { - tcb->flags |= fMP_DEST_MULTI; - } - } - - tcb->next = NULL; - - /* Call the NIC specific send handler. */ - status = nic_send_packet(adapter, tcb); - - if (status != 0) { - spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); - - if (adapter->tx_ring.tcb_qtail) - adapter->tx_ring.tcb_qtail->next = tcb; - else - /* Apparently ready Q is empty. */ - adapter->tx_ring.tcb_qhead = tcb; - - adapter->tx_ring.tcb_qtail = tcb; - spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); - return status; - } - WARN_ON(adapter->tx_ring.used > NUM_TCB); - return 0; -} - -/** - * et131x_send_packets - This function is called by the OS to send packets - * @skb: the packet(s) to send - * @netdev:device on which to TX the above packet(s) - * - * Return 0 in almost all cases; non-zero value in extreme hard failure only - */ -int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev) -{ - int status = 0; - struct et131x_adapter *adapter = NULL; - - adapter = netdev_priv(netdev); - - /* Send these packets - * - * NOTE: The Linux Tx entry point is only given one packet at a time - * to Tx, so the PacketCount and it's array used makes no sense here - */ - - /* TCB is not available */ - if (adapter->tx_ring.used >= NUM_TCB) { - /* NOTE: If there's an error on send, no need to queue the - * packet under Linux; if we just send an error up to the - * netif layer, it will resend the skb to us. - */ - status = -ENOMEM; - } else { - /* We need to see if the link is up; if it's not, make the - * netif layer think we're good and drop the packet - */ - if ((adapter->flags & fMP_ADAPTER_FAIL_SEND_MASK) || - !netif_carrier_ok(netdev)) { - dev_kfree_skb_any(skb); - skb = NULL; - - adapter->net_stats.tx_dropped++; - } else { - status = send_packet(skb, adapter); - if (status != 0 && status != -ENOMEM) { - /* On any other error, make netif think we're - * OK and drop the packet - */ - dev_kfree_skb_any(skb); - skb = NULL; - adapter->net_stats.tx_dropped++; - } - } - } - return status; -} - -/** - * free_send_packet - Recycle a struct tcb - * @adapter: pointer to our adapter - * @tcb: pointer to struct tcb - * - * Complete the packet if necessary - * Assumption - Send spinlock has been acquired - */ -static inline void free_send_packet(struct et131x_adapter *adapter, - struct tcb *tcb) -{ - unsigned long flags; - struct tx_desc *desc = NULL; - struct net_device_stats *stats = &adapter->net_stats; - - if (tcb->flags & fMP_DEST_BROAD) - atomic_inc(&adapter->stats.broadcast_pkts_xmtd); - else if (tcb->flags & fMP_DEST_MULTI) - atomic_inc(&adapter->stats.multicast_pkts_xmtd); - else - atomic_inc(&adapter->stats.unicast_pkts_xmtd); - - if (tcb->skb) { - stats->tx_bytes += tcb->skb->len; - - /* Iterate through the TX descriptors on the ring - * corresponding to this packet and umap the fragments - * they point to - */ - do { - desc = (struct tx_desc *) - (adapter->tx_ring.tx_desc_ring + - INDEX10(tcb->index_start)); - - pci_unmap_single(adapter->pdev, - desc->addr_lo, - desc->len_vlan, PCI_DMA_TODEVICE); - - add_10bit(&tcb->index_start, 1); - if (INDEX10(tcb->index_start) >= - NUM_DESC_PER_RING_TX) { - tcb->index_start &= ~ET_DMA10_MASK; - tcb->index_start ^= ET_DMA10_WRAP; - } - } while (desc != (adapter->tx_ring.tx_desc_ring + - INDEX10(tcb->index))); - - dev_kfree_skb_any(tcb->skb); - } - - memset(tcb, 0, sizeof(struct tcb)); - - /* Add the TCB to the Ready Q */ - spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); - - adapter->net_stats.tx_packets++; - - if (adapter->tx_ring.tcb_qtail) - adapter->tx_ring.tcb_qtail->next = tcb; - else - /* Apparently ready Q is empty. */ - adapter->tx_ring.tcb_qhead = tcb; - - adapter->tx_ring.tcb_qtail = tcb; - - spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); - WARN_ON(adapter->tx_ring.used < 0); -} - -/** - * et131x_free_busy_send_packets - Free and complete the stopped active sends - * @adapter: pointer to our adapter - * - * Assumption - Send spinlock has been acquired - */ -void et131x_free_busy_send_packets(struct et131x_adapter *adapter) -{ - struct tcb *tcb; - unsigned long flags; - u32 freed = 0; - - /* Any packets being sent? Check the first TCB on the send list */ - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - tcb = adapter->tx_ring.send_head; - - while (tcb != NULL && freed < NUM_TCB) { - struct tcb *next = tcb->next; - - adapter->tx_ring.send_head = next; - - if (next == NULL) - adapter->tx_ring.send_tail = NULL; - - adapter->tx_ring.used--; - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); - - freed++; - free_send_packet(adapter, tcb); - - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - tcb = adapter->tx_ring.send_head; - } - - WARN_ON(freed == NUM_TCB); - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); - - adapter->tx_ring.used = 0; -} - -/** - * et131x_handle_send_interrupt - Interrupt handler for sending processing - * @adapter: pointer to our adapter - * - * Re-claim the send resources, complete sends and get more to send from - * the send wait queue. - * - * Assumption - Send spinlock has been acquired - */ -void et131x_handle_send_interrupt(struct et131x_adapter *adapter) -{ - unsigned long flags; - u32 serviced; - struct tcb *tcb; - u32 index; - - serviced = readl(&adapter->regs->txdma.new_service_complete); - index = INDEX10(serviced); - - /* Has the ring wrapped? Process any descriptors that do not have - * the same "wrap" indicator as the current completion indicator - */ - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - tcb = adapter->tx_ring.send_head; - - while (tcb && - ((serviced ^ tcb->index) & ET_DMA10_WRAP) && - index < INDEX10(tcb->index)) { - adapter->tx_ring.used--; - adapter->tx_ring.send_head = tcb->next; - if (tcb->next == NULL) - adapter->tx_ring.send_tail = NULL; - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); - free_send_packet(adapter, tcb); - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - /* Goto the next packet */ - tcb = adapter->tx_ring.send_head; - } - while (tcb && - !((serviced ^ tcb->index) & ET_DMA10_WRAP) - && index > (tcb->index & ET_DMA10_MASK)) { - adapter->tx_ring.used--; - adapter->tx_ring.send_head = tcb->next; - if (tcb->next == NULL) - adapter->tx_ring.send_tail = NULL; - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); - free_send_packet(adapter, tcb); - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - /* Goto the next packet */ - tcb = adapter->tx_ring.send_head; - } - - /* Wake up the queue when we hit a low-water mark */ - if (adapter->tx_ring.used <= NUM_TCB / 3) - netif_wake_queue(adapter->netdev); - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); -} - diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c new file mode 100644 index 000000000000..fdf6385e06ab --- /dev/null +++ b/drivers/staging/et131x/et131x.c @@ -0,0 +1,5042 @@ +/* + * Agere Systems Inc. + * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs + * + * Copyright © 2005 Agere Systems Inc. + * All rights reserved. + * http://www.agere.com + * + * Copyright (c) 2011 Mark Einon + * + *------------------------------------------------------------------------------ + * + * SOFTWARE LICENSE + * + * This software is provided subject to the following terms and conditions, + * which you should read carefully before using the software. Using this + * software indicates your acceptance of these terms and conditions. If you do + * not agree with these terms and conditions, do not use the software. + * + * Copyright © 2005 Agere Systems Inc. + * All rights reserved. + * + * Redistribution and use in source or binary forms, with or without + * modifications, are permitted provided that the following conditions are met: + * + * . Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following Disclaimer as comments in the code as + * well as in the documentation and/or other materials provided with the + * distribution. + * + * . Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following Disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * . Neither the name of Agere Systems Inc. nor the names of the contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * Disclaimer + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY + * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN + * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + */ + +#include "et131x_defs.h" + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "et1310_phy.h" +#include "et131x_adapter.h" +#include "et1310_address_map.h" +#include "et1310_tx.h" +#include "et1310_rx.h" +#include "et131x.h" + +MODULE_AUTHOR("Victor Soriano "); +MODULE_AUTHOR("Mark Einon "); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION("10/100/1000 Base-T Ethernet Driver " + "for the ET1310 by Agere Systems"); + +/* EEPROM functions */ + +static int eeprom_wait_ready(struct pci_dev *pdev, u32 *status) +{ + u32 reg; + int i; + + /* + * 1. Check LBCIF Status Register for bits 6 & 3:2 all equal to 0 and + * bits 7,1:0 both equal to 1, at least once after reset. + * Subsequent operations need only to check that bits 1:0 are equal + * to 1 prior to starting a single byte read/write + */ + + for (i = 0; i < MAX_NUM_REGISTER_POLLS; i++) { + /* Read registers grouped in DWORD1 */ + if (pci_read_config_dword(pdev, LBCIF_DWORD1_GROUP, ®)) + return -EIO; + + /* I2C idle and Phy Queue Avail both true */ + if ((reg & 0x3000) == 0x3000) { + if (status) + *status = reg; + return reg & 0xFF; + } + } + return -ETIMEDOUT; +} + + +/** + * eeprom_write - Write a byte to the ET1310's EEPROM + * @adapter: pointer to our private adapter structure + * @addr: the address to write + * @data: the value to write + * + * Returns 1 for a successful write. + */ +static int eeprom_write(struct et131x_adapter *adapter, u32 addr, u8 data) +{ + struct pci_dev *pdev = adapter->pdev; + int index = 0; + int retries; + int err = 0; + int i2c_wack = 0; + int writeok = 0; + u32 status; + u32 val = 0; + + /* + * For an EEPROM, an I2C single byte write is defined as a START + * condition followed by the device address, EEPROM address, one byte + * of data and a STOP condition. The STOP condition will trigger the + * EEPROM's internally timed write cycle to the nonvolatile memory. + * All inputs are disabled during this write cycle and the EEPROM will + * not respond to any access until the internal write is complete. + */ + + err = eeprom_wait_ready(pdev, NULL); + if (err) + return err; + + /* + * 2. Write to the LBCIF Control Register: bit 7=1, bit 6=1, bit 3=0, + * and bits 1:0 both =0. Bit 5 should be set according to the + * type of EEPROM being accessed (1=two byte addressing, 0=one + * byte addressing). + */ + if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, + LBCIF_CONTROL_LBCIF_ENABLE | LBCIF_CONTROL_I2C_WRITE)) + return -EIO; + + i2c_wack = 1; + + /* Prepare EEPROM address for Step 3 */ + + for (retries = 0; retries < MAX_NUM_WRITE_RETRIES; retries++) { + /* Write the address to the LBCIF Address Register */ + if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr)) + break; + /* + * Write the data to the LBCIF Data Register (the I2C write + * will begin). + */ + if (pci_write_config_byte(pdev, LBCIF_DATA_REGISTER, data)) + break; + /* + * Monitor bit 1:0 of the LBCIF Status Register. When bits + * 1:0 are both equal to 1, the I2C write has completed and the + * internal write cycle of the EEPROM is about to start. + * (bits 1:0 = 01 is a legal state while waiting from both + * equal to 1, but bits 1:0 = 10 is invalid and implies that + * something is broken). + */ + err = eeprom_wait_ready(pdev, &status); + if (err < 0) + return 0; + + /* + * Check bit 3 of the LBCIF Status Register. If equal to 1, + * an error has occurred.Don't break here if we are revision + * 1, this is so we do a blind write for load bug. + */ + if ((status & LBCIF_STATUS_GENERAL_ERROR) + && adapter->pdev->revision == 0) + break; + + /* + * Check bit 2 of the LBCIF Status Register. If equal to 1 an + * ACK error has occurred on the address phase of the write. + * This could be due to an actual hardware failure or the + * EEPROM may still be in its internal write cycle from a + * previous write. This write operation was ignored and must be + *repeated later. + */ + if (status & LBCIF_STATUS_ACK_ERROR) { + /* + * This could be due to an actual hardware failure + * or the EEPROM may still be in its internal write + * cycle from a previous write. This write operation + * was ignored and must be repeated later. + */ + udelay(10); + continue; + } + + writeok = 1; + break; + } + + /* + * Set bit 6 of the LBCIF Control Register = 0. + */ + udelay(10); + + while (i2c_wack) { + if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, + LBCIF_CONTROL_LBCIF_ENABLE)) + writeok = 0; + + /* Do read until internal ACK_ERROR goes away meaning write + * completed + */ + do { + pci_write_config_dword(pdev, + LBCIF_ADDRESS_REGISTER, + addr); + do { + pci_read_config_dword(pdev, + LBCIF_DATA_REGISTER, &val); + } while ((val & 0x00010000) == 0); + } while (val & 0x00040000); + + if ((val & 0xFF00) != 0xC000 || index == 10000) + break; + index++; + } + return writeok ? 0 : -EIO; +} + +/** + * eeprom_read - Read a byte from the ET1310's EEPROM + * @adapter: pointer to our private adapter structure + * @addr: the address from which to read + * @pdata: a pointer to a byte in which to store the value of the read + * @eeprom_id: the ID of the EEPROM + * @addrmode: how the EEPROM is to be accessed + * + * Returns 1 for a successful read + */ +static int eeprom_read(struct et131x_adapter *adapter, u32 addr, u8 *pdata) +{ + struct pci_dev *pdev = adapter->pdev; + int err; + u32 status; + + /* + * A single byte read is similar to the single byte write, with the + * exception of the data flow: + */ + + err = eeprom_wait_ready(pdev, NULL); + if (err) + return err; + /* + * Write to the LBCIF Control Register: bit 7=1, bit 6=0, bit 3=0, + * and bits 1:0 both =0. Bit 5 should be set according to the type + * of EEPROM being accessed (1=two byte addressing, 0=one byte + * addressing). + */ + if (pci_write_config_byte(pdev, LBCIF_CONTROL_REGISTER, + LBCIF_CONTROL_LBCIF_ENABLE)) + return -EIO; + /* + * Write the address to the LBCIF Address Register (I2C read will + * begin). + */ + if (pci_write_config_dword(pdev, LBCIF_ADDRESS_REGISTER, addr)) + return -EIO; + /* + * Monitor bit 0 of the LBCIF Status Register. When = 1, I2C read + * is complete. (if bit 1 =1 and bit 0 stays = 0, a hardware failure + * has occurred). + */ + err = eeprom_wait_ready(pdev, &status); + if (err < 0) + return err; + /* + * Regardless of error status, read data byte from LBCIF Data + * Register. + */ + *pdata = err; + /* + * Check bit 2 of the LBCIF Status Register. If = 1, + * then an error has occurred. + */ + return (status & LBCIF_STATUS_ACK_ERROR) ? -EIO : 0; +} + +int et131x_init_eeprom(struct et131x_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + u8 eestatus; + + /* We first need to check the EEPROM Status code located at offset + * 0xB2 of config space + */ + pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, + &eestatus); + + /* THIS IS A WORKAROUND: + * I need to call this function twice to get my card in a + * LG M1 Express Dual running. I tried also a msleep before this + * function, because I thougth there could be some time condidions + * but it didn't work. Call the whole function twice also work. + */ + if (pci_read_config_byte(pdev, ET1310_PCI_EEPROM_STATUS, &eestatus)) { + dev_err(&pdev->dev, + "Could not read PCI config space for EEPROM Status\n"); + return -EIO; + } + + /* Determine if the error(s) we care about are present. If they are + * present we need to fail. + */ + if (eestatus & 0x4C) { + int write_failed = 0; + if (pdev->revision == 0x01) { + int i; + static const u8 eedata[4] = { 0xFE, 0x13, 0x10, 0xFF }; + + /* Re-write the first 4 bytes if we have an eeprom + * present and the revision id is 1, this fixes the + * corruption seen with 1310 B Silicon + */ + for (i = 0; i < 3; i++) + if (eeprom_write(adapter, i, eedata[i]) < 0) + write_failed = 1; + } + if (pdev->revision != 0x01 || write_failed) { + dev_err(&pdev->dev, + "Fatal EEPROM Status Error - 0x%04x\n", eestatus); + + /* This error could mean that there was an error + * reading the eeprom or that the eeprom doesn't exist. + * We will treat each case the same and not try to + * gather additional information that normally would + * come from the eeprom, like MAC Address + */ + adapter->has_eeprom = 0; + return -EIO; + } + } + adapter->has_eeprom = 1; + + /* Read the EEPROM for information regarding LED behavior. Refer to + * ET1310_phy.c, et131x_xcvr_init(), for its use. + */ + eeprom_read(adapter, 0x70, &adapter->eeprom_data[0]); + eeprom_read(adapter, 0x71, &adapter->eeprom_data[1]); + + if (adapter->eeprom_data[0] != 0xcd) + /* Disable all optional features */ + adapter->eeprom_data[1] = 0x00; + + return 0; +} + +/* MAC functions */ + +/** + * et1310_config_mac_regs1 - Initialize the first part of MAC regs + * @adapter: pointer to our adapter structure + */ +void et1310_config_mac_regs1(struct et131x_adapter *adapter) +{ + struct mac_regs __iomem *macregs = &adapter->regs->mac; + u32 station1; + u32 station2; + u32 ipg; + + /* First we need to reset everything. Write to MAC configuration + * register 1 to perform reset. + */ + writel(0xC00F0000, ¯egs->cfg1); + + /* Next lets configure the MAC Inter-packet gap register */ + ipg = 0x38005860; /* IPG1 0x38 IPG2 0x58 B2B 0x60 */ + ipg |= 0x50 << 8; /* ifg enforce 0x50 */ + writel(ipg, ¯egs->ipg); + + /* Next lets configure the MAC Half Duplex register */ + /* BEB trunc 0xA, Ex Defer, Rexmit 0xF Coll 0x37 */ + writel(0x00A1F037, ¯egs->hfdp); + + /* Next lets configure the MAC Interface Control register */ + writel(0, ¯egs->if_ctrl); + + /* Let's move on to setting up the mii management configuration */ + writel(0x07, ¯egs->mii_mgmt_cfg); /* Clock reset 0x7 */ + + /* Next lets configure the MAC Station Address register. These + * values are read from the EEPROM during initialization and stored + * in the adapter structure. We write what is stored in the adapter + * structure to the MAC Station Address registers high and low. This + * station address is used for generating and checking pause control + * packets. + */ + station2 = (adapter->addr[1] << ET_MAC_STATION_ADDR2_OC2_SHIFT) | + (adapter->addr[0] << ET_MAC_STATION_ADDR2_OC1_SHIFT); + station1 = (adapter->addr[5] << ET_MAC_STATION_ADDR1_OC6_SHIFT) | + (adapter->addr[4] << ET_MAC_STATION_ADDR1_OC5_SHIFT) | + (adapter->addr[3] << ET_MAC_STATION_ADDR1_OC4_SHIFT) | + adapter->addr[2]; + writel(station1, ¯egs->station_addr_1); + writel(station2, ¯egs->station_addr_2); + + /* Max ethernet packet in bytes that will passed by the mac without + * being truncated. Allow the MAC to pass 4 more than our max packet + * size. This is 4 for the Ethernet CRC. + * + * Packets larger than (registry_jumbo_packet) that do not contain a + * VLAN ID will be dropped by the Rx function. + */ + writel(adapter->registry_jumbo_packet + 4, ¯egs->max_fm_len); + + /* clear out MAC config reset */ + writel(0, ¯egs->cfg1); +} + +/** + * et1310_config_mac_regs2 - Initialize the second part of MAC regs + * @adapter: pointer to our adapter structure + */ +void et1310_config_mac_regs2(struct et131x_adapter *adapter) +{ + int32_t delay = 0; + struct mac_regs __iomem *mac = &adapter->regs->mac; + struct phy_device *phydev = adapter->phydev; + u32 cfg1; + u32 cfg2; + u32 ifctrl; + u32 ctl; + + ctl = readl(&adapter->regs->txmac.ctl); + cfg1 = readl(&mac->cfg1); + cfg2 = readl(&mac->cfg2); + ifctrl = readl(&mac->if_ctrl); + + /* Set up the if mode bits */ + cfg2 &= ~0x300; + if (phydev && phydev->speed == SPEED_1000) { + cfg2 |= 0x200; + /* Phy mode bit */ + ifctrl &= ~(1 << 24); + } else { + cfg2 |= 0x100; + ifctrl |= (1 << 24); + } + + /* We need to enable Rx/Tx */ + cfg1 |= CFG1_RX_ENABLE | CFG1_TX_ENABLE | CFG1_TX_FLOW; + /* Initialize loop back to off */ + cfg1 &= ~(CFG1_LOOPBACK | CFG1_RX_FLOW); + if (adapter->flowcontrol == FLOW_RXONLY || + adapter->flowcontrol == FLOW_BOTH) + cfg1 |= CFG1_RX_FLOW; + writel(cfg1, &mac->cfg1); + + /* Now we need to initialize the MAC Configuration 2 register */ + /* preamble 7, check length, huge frame off, pad crc, crc enable + full duplex off */ + cfg2 |= 0x7016; + cfg2 &= ~0x0021; + + /* Turn on duplex if needed */ + if (phydev && phydev->duplex == DUPLEX_FULL) + cfg2 |= 0x01; + + ifctrl &= ~(1 << 26); + if (phydev && phydev->duplex == DUPLEX_HALF) + ifctrl |= (1<<26); /* Enable ghd */ + + writel(ifctrl, &mac->if_ctrl); + writel(cfg2, &mac->cfg2); + + do { + udelay(10); + delay++; + cfg1 = readl(&mac->cfg1); + } while ((cfg1 & CFG1_WAIT) != CFG1_WAIT && delay < 100); + + if (delay == 100) { + dev_warn(&adapter->pdev->dev, + "Syncd bits did not respond correctly cfg1 word 0x%08x\n", + cfg1); + } + + /* Enable txmac */ + ctl |= 0x09; /* TX mac enable, FC disable */ + writel(ctl, &adapter->regs->txmac.ctl); + + /* Ready to start the RXDMA/TXDMA engine */ + if (adapter->flags & fMP_ADAPTER_LOWER_POWER) { + et131x_rx_dma_enable(adapter); + et131x_tx_dma_enable(adapter); + } +} + +void et1310_config_rxmac_regs(struct et131x_adapter *adapter) +{ + struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; + struct phy_device *phydev = adapter->phydev; + u32 sa_lo; + u32 sa_hi = 0; + u32 pf_ctrl = 0; + + /* Disable the MAC while it is being configured (also disable WOL) */ + writel(0x8, &rxmac->ctrl); + + /* Initialize WOL to disabled. */ + writel(0, &rxmac->crc0); + writel(0, &rxmac->crc12); + writel(0, &rxmac->crc34); + + /* We need to set the WOL mask0 - mask4 next. We initialize it to + * its default Values of 0x00000000 because there are not WOL masks + * as of this time. + */ + writel(0, &rxmac->mask0_word0); + writel(0, &rxmac->mask0_word1); + writel(0, &rxmac->mask0_word2); + writel(0, &rxmac->mask0_word3); + + writel(0, &rxmac->mask1_word0); + writel(0, &rxmac->mask1_word1); + writel(0, &rxmac->mask1_word2); + writel(0, &rxmac->mask1_word3); + + writel(0, &rxmac->mask2_word0); + writel(0, &rxmac->mask2_word1); + writel(0, &rxmac->mask2_word2); + writel(0, &rxmac->mask2_word3); + + writel(0, &rxmac->mask3_word0); + writel(0, &rxmac->mask3_word1); + writel(0, &rxmac->mask3_word2); + writel(0, &rxmac->mask3_word3); + + writel(0, &rxmac->mask4_word0); + writel(0, &rxmac->mask4_word1); + writel(0, &rxmac->mask4_word2); + writel(0, &rxmac->mask4_word3); + + /* Lets setup the WOL Source Address */ + sa_lo = (adapter->addr[2] << ET_WOL_LO_SA3_SHIFT) | + (adapter->addr[3] << ET_WOL_LO_SA4_SHIFT) | + (adapter->addr[4] << ET_WOL_LO_SA5_SHIFT) | + adapter->addr[5]; + writel(sa_lo, &rxmac->sa_lo); + + sa_hi = (u32) (adapter->addr[0] << ET_WOL_HI_SA1_SHIFT) | + adapter->addr[1]; + writel(sa_hi, &rxmac->sa_hi); + + /* Disable all Packet Filtering */ + writel(0, &rxmac->pf_ctrl); + + /* Let's initialize the Unicast Packet filtering address */ + if (adapter->packet_filter & ET131X_PACKET_TYPE_DIRECTED) { + et1310_setup_device_for_unicast(adapter); + pf_ctrl |= 4; /* Unicast filter */ + } else { + writel(0, &rxmac->uni_pf_addr1); + writel(0, &rxmac->uni_pf_addr2); + writel(0, &rxmac->uni_pf_addr3); + } + + /* Let's initialize the Multicast hash */ + if (!(adapter->packet_filter & ET131X_PACKET_TYPE_ALL_MULTICAST)) { + pf_ctrl |= 2; /* Multicast filter */ + et1310_setup_device_for_multicast(adapter); + } + + /* Runt packet filtering. Didn't work in version A silicon. */ + pf_ctrl |= (NIC_MIN_PACKET_SIZE + 4) << 16; + pf_ctrl |= 8; /* Fragment filter */ + + if (adapter->registry_jumbo_packet > 8192) + /* In order to transmit jumbo packets greater than 8k, the + * FIFO between RxMAC and RxDMA needs to be reduced in size + * to (16k - Jumbo packet size). In order to implement this, + * we must use "cut through" mode in the RxMAC, which chops + * packets down into segments which are (max_size * 16). In + * this case we selected 256 bytes, since this is the size of + * the PCI-Express TLP's that the 1310 uses. + * + * seg_en on, fc_en off, size 0x10 + */ + writel(0x41, &rxmac->mcif_ctrl_max_seg); + else + writel(0, &rxmac->mcif_ctrl_max_seg); + + /* Initialize the MCIF water marks */ + writel(0, &rxmac->mcif_water_mark); + + /* Initialize the MIF control */ + writel(0, &rxmac->mif_ctrl); + + /* Initialize the Space Available Register */ + writel(0, &rxmac->space_avail); + + /* Initialize the the mif_ctrl register + * bit 3: Receive code error. One or more nibbles were signaled as + * errors during the reception of the packet. Clear this + * bit in Gigabit, set it in 100Mbit. This was derived + * experimentally at UNH. + * bit 4: Receive CRC error. The packet's CRC did not match the + * internally generated CRC. + * bit 5: Receive length check error. Indicates that frame length + * field value in the packet does not match the actual data + * byte length and is not a type field. + * bit 16: Receive frame truncated. + * bit 17: Drop packet enable + */ + if (phydev && phydev->speed == SPEED_100) + writel(0x30038, &rxmac->mif_ctrl); + else + writel(0x30030, &rxmac->mif_ctrl); + + /* Finally we initialize RxMac to be enabled & WOL disabled. Packet + * filter is always enabled since it is where the runt packets are + * supposed to be dropped. For version A silicon, runt packet + * dropping doesn't work, so it is disabled in the pf_ctrl register, + * but we still leave the packet filter on. + */ + writel(pf_ctrl, &rxmac->pf_ctrl); + writel(0x9, &rxmac->ctrl); +} + +void et1310_config_txmac_regs(struct et131x_adapter *adapter) +{ + struct txmac_regs __iomem *txmac = &adapter->regs->txmac; + + /* We need to update the Control Frame Parameters + * cfpt - control frame pause timer set to 64 (0x40) + * cfep - control frame extended pause timer set to 0x0 + */ + if (adapter->flowcontrol == FLOW_NONE) + writel(0, &txmac->cf_param); + else + writel(0x40, &txmac->cf_param); +} + +void et1310_config_macstat_regs(struct et131x_adapter *adapter) +{ + struct macstat_regs __iomem *macstat = + &adapter->regs->macstat; + + /* Next we need to initialize all the macstat registers to zero on + * the device. + */ + writel(0, &macstat->txrx_0_64_byte_frames); + writel(0, &macstat->txrx_65_127_byte_frames); + writel(0, &macstat->txrx_128_255_byte_frames); + writel(0, &macstat->txrx_256_511_byte_frames); + writel(0, &macstat->txrx_512_1023_byte_frames); + writel(0, &macstat->txrx_1024_1518_byte_frames); + writel(0, &macstat->txrx_1519_1522_gvln_frames); + + writel(0, &macstat->rx_bytes); + writel(0, &macstat->rx_packets); + writel(0, &macstat->rx_fcs_errs); + writel(0, &macstat->rx_multicast_packets); + writel(0, &macstat->rx_broadcast_packets); + writel(0, &macstat->rx_control_frames); + writel(0, &macstat->rx_pause_frames); + writel(0, &macstat->rx_unknown_opcodes); + writel(0, &macstat->rx_align_errs); + writel(0, &macstat->rx_frame_len_errs); + writel(0, &macstat->rx_code_errs); + writel(0, &macstat->rx_carrier_sense_errs); + writel(0, &macstat->rx_undersize_packets); + writel(0, &macstat->rx_oversize_packets); + writel(0, &macstat->rx_fragment_packets); + writel(0, &macstat->rx_jabbers); + writel(0, &macstat->rx_drops); + + writel(0, &macstat->tx_bytes); + writel(0, &macstat->tx_packets); + writel(0, &macstat->tx_multicast_packets); + writel(0, &macstat->tx_broadcast_packets); + writel(0, &macstat->tx_pause_frames); + writel(0, &macstat->tx_deferred); + writel(0, &macstat->tx_excessive_deferred); + writel(0, &macstat->tx_single_collisions); + writel(0, &macstat->tx_multiple_collisions); + writel(0, &macstat->tx_late_collisions); + writel(0, &macstat->tx_excessive_collisions); + writel(0, &macstat->tx_total_collisions); + writel(0, &macstat->tx_pause_honored_frames); + writel(0, &macstat->tx_drops); + writel(0, &macstat->tx_jabbers); + writel(0, &macstat->tx_fcs_errs); + writel(0, &macstat->tx_control_frames); + writel(0, &macstat->tx_oversize_frames); + writel(0, &macstat->tx_undersize_frames); + writel(0, &macstat->tx_fragments); + writel(0, &macstat->carry_reg1); + writel(0, &macstat->carry_reg2); + + /* Unmask any counters that we want to track the overflow of. + * Initially this will be all counters. It may become clear later + * that we do not need to track all counters. + */ + writel(0xFFFFBE32, &macstat->carry_reg1_mask); + writel(0xFFFE7E8B, &macstat->carry_reg2_mask); +} + +void et1310_config_flow_control(struct et131x_adapter *adapter) +{ + struct phy_device *phydev = adapter->phydev; + + if (phydev->duplex == DUPLEX_HALF) { + adapter->flowcontrol = FLOW_NONE; + } else { + char remote_pause, remote_async_pause; + + et1310_phy_access_mii_bit(adapter, + TRUEPHY_BIT_READ, 5, 10, &remote_pause); + et1310_phy_access_mii_bit(adapter, + TRUEPHY_BIT_READ, 5, 11, + &remote_async_pause); + + if ((remote_pause == TRUEPHY_BIT_SET) && + (remote_async_pause == TRUEPHY_BIT_SET)) { + adapter->flowcontrol = adapter->wanted_flow; + } else if ((remote_pause == TRUEPHY_BIT_SET) && + (remote_async_pause == TRUEPHY_BIT_CLEAR)) { + if (adapter->wanted_flow == FLOW_BOTH) + adapter->flowcontrol = FLOW_BOTH; + else + adapter->flowcontrol = FLOW_NONE; + } else if ((remote_pause == TRUEPHY_BIT_CLEAR) && + (remote_async_pause == TRUEPHY_BIT_CLEAR)) { + adapter->flowcontrol = FLOW_NONE; + } else {/* if (remote_pause == TRUEPHY_CLEAR_BIT && + remote_async_pause == TRUEPHY_SET_BIT) */ + if (adapter->wanted_flow == FLOW_BOTH) + adapter->flowcontrol = FLOW_RXONLY; + else + adapter->flowcontrol = FLOW_NONE; + } + } +} + +/** + * et1310_update_macstat_host_counters - Update the local copy of the statistics + * @adapter: pointer to the adapter structure + */ +void et1310_update_macstat_host_counters(struct et131x_adapter *adapter) +{ + struct ce_stats *stats = &adapter->stats; + struct macstat_regs __iomem *macstat = + &adapter->regs->macstat; + + stats->tx_collisions += readl(&macstat->tx_total_collisions); + stats->tx_first_collisions += readl(&macstat->tx_single_collisions); + stats->tx_deferred += readl(&macstat->tx_deferred); + stats->tx_excessive_collisions += + readl(&macstat->tx_multiple_collisions); + stats->tx_late_collisions += readl(&macstat->tx_late_collisions); + stats->tx_underflows += readl(&macstat->tx_undersize_frames); + stats->tx_max_pkt_errs += readl(&macstat->tx_oversize_frames); + + stats->rx_align_errs += readl(&macstat->rx_align_errs); + stats->rx_crc_errs += readl(&macstat->rx_code_errs); + stats->rcvd_pkts_dropped += readl(&macstat->rx_drops); + stats->rx_overflows += readl(&macstat->rx_oversize_packets); + stats->rx_code_violations += readl(&macstat->rx_fcs_errs); + stats->rx_length_errs += readl(&macstat->rx_frame_len_errs); + stats->rx_other_errs += readl(&macstat->rx_fragment_packets); +} + +/** + * et1310_handle_macstat_interrupt + * @adapter: pointer to the adapter structure + * + * One of the MACSTAT counters has wrapped. Update the local copy of + * the statistics held in the adapter structure, checking the "wrap" + * bit for each counter. + */ +void et1310_handle_macstat_interrupt(struct et131x_adapter *adapter) +{ + u32 carry_reg1; + u32 carry_reg2; + + /* Read the interrupt bits from the register(s). These are Clear On + * Write. + */ + carry_reg1 = readl(&adapter->regs->macstat.carry_reg1); + carry_reg2 = readl(&adapter->regs->macstat.carry_reg2); + + writel(carry_reg1, &adapter->regs->macstat.carry_reg1); + writel(carry_reg2, &adapter->regs->macstat.carry_reg2); + + /* We need to do update the host copy of all the MAC_STAT counters. + * For each counter, check it's overflow bit. If the overflow bit is + * set, then increment the host version of the count by one complete + * revolution of the counter. This routine is called when the counter + * block indicates that one of the counters has wrapped. + */ + if (carry_reg1 & (1 << 14)) + adapter->stats.rx_code_violations += COUNTER_WRAP_16_BIT; + if (carry_reg1 & (1 << 8)) + adapter->stats.rx_align_errs += COUNTER_WRAP_12_BIT; + if (carry_reg1 & (1 << 7)) + adapter->stats.rx_length_errs += COUNTER_WRAP_16_BIT; + if (carry_reg1 & (1 << 2)) + adapter->stats.rx_other_errs += COUNTER_WRAP_16_BIT; + if (carry_reg1 & (1 << 6)) + adapter->stats.rx_crc_errs += COUNTER_WRAP_16_BIT; + if (carry_reg1 & (1 << 3)) + adapter->stats.rx_overflows += COUNTER_WRAP_16_BIT; + if (carry_reg1 & (1 << 0)) + adapter->stats.rcvd_pkts_dropped += COUNTER_WRAP_16_BIT; + if (carry_reg2 & (1 << 16)) + adapter->stats.tx_max_pkt_errs += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 15)) + adapter->stats.tx_underflows += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 6)) + adapter->stats.tx_first_collisions += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 8)) + adapter->stats.tx_deferred += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 5)) + adapter->stats.tx_excessive_collisions += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 4)) + adapter->stats.tx_late_collisions += COUNTER_WRAP_12_BIT; + if (carry_reg2 & (1 << 2)) + adapter->stats.tx_collisions += COUNTER_WRAP_12_BIT; +} + +void et1310_setup_device_for_multicast(struct et131x_adapter *adapter) +{ + struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; + uint32_t nIndex; + uint32_t result; + uint32_t hash1 = 0; + uint32_t hash2 = 0; + uint32_t hash3 = 0; + uint32_t hash4 = 0; + u32 pm_csr; + + /* If ET131X_PACKET_TYPE_MULTICAST is specified, then we provision + * the multi-cast LIST. If it is NOT specified, (and "ALL" is not + * specified) then we should pass NO multi-cast addresses to the + * driver. + */ + if (adapter->packet_filter & ET131X_PACKET_TYPE_MULTICAST) { + /* Loop through our multicast array and set up the device */ + for (nIndex = 0; nIndex < adapter->multicast_addr_count; + nIndex++) { + result = ether_crc(6, adapter->multicast_list[nIndex]); + + result = (result & 0x3F800000) >> 23; + + if (result < 32) { + hash1 |= (1 << result); + } else if ((31 < result) && (result < 64)) { + result -= 32; + hash2 |= (1 << result); + } else if ((63 < result) && (result < 96)) { + result -= 64; + hash3 |= (1 << result); + } else { + result -= 96; + hash4 |= (1 << result); + } + } + } + + /* Write out the new hash to the device */ + pm_csr = readl(&adapter->regs->global.pm_csr); + if (!et1310_in_phy_coma(adapter)) { + writel(hash1, &rxmac->multi_hash1); + writel(hash2, &rxmac->multi_hash2); + writel(hash3, &rxmac->multi_hash3); + writel(hash4, &rxmac->multi_hash4); + } +} + +void et1310_setup_device_for_unicast(struct et131x_adapter *adapter) +{ + struct rxmac_regs __iomem *rxmac = &adapter->regs->rxmac; + u32 uni_pf1; + u32 uni_pf2; + u32 uni_pf3; + u32 pm_csr; + + /* Set up unicast packet filter reg 3 to be the first two octets of + * the MAC address for both address + * + * Set up unicast packet filter reg 2 to be the octets 2 - 5 of the + * MAC address for second address + * + * Set up unicast packet filter reg 3 to be the octets 2 - 5 of the + * MAC address for first address + */ + uni_pf3 = (adapter->addr[0] << ET_UNI_PF_ADDR2_1_SHIFT) | + (adapter->addr[1] << ET_UNI_PF_ADDR2_2_SHIFT) | + (adapter->addr[0] << ET_UNI_PF_ADDR1_1_SHIFT) | + adapter->addr[1]; + + uni_pf2 = (adapter->addr[2] << ET_UNI_PF_ADDR2_3_SHIFT) | + (adapter->addr[3] << ET_UNI_PF_ADDR2_4_SHIFT) | + (adapter->addr[4] << ET_UNI_PF_ADDR2_5_SHIFT) | + adapter->addr[5]; + + uni_pf1 = (adapter->addr[2] << ET_UNI_PF_ADDR1_3_SHIFT) | + (adapter->addr[3] << ET_UNI_PF_ADDR1_4_SHIFT) | + (adapter->addr[4] << ET_UNI_PF_ADDR1_5_SHIFT) | + adapter->addr[5]; + + pm_csr = readl(&adapter->regs->global.pm_csr); + if (!et1310_in_phy_coma(adapter)) { + writel(uni_pf1, &rxmac->uni_pf_addr1); + writel(uni_pf2, &rxmac->uni_pf_addr2); + writel(uni_pf3, &rxmac->uni_pf_addr3); + } +} + +/* PHY functions */ + +int et131x_mdio_read(struct mii_bus *bus, int phy_addr, int reg) +{ + struct net_device *netdev = bus->priv; + struct et131x_adapter *adapter = netdev_priv(netdev); + u16 value; + int ret; + + ret = et131x_phy_mii_read(adapter, phy_addr, reg, &value); + + if (ret < 0) + return ret; + else + return value; +} + +int et131x_mdio_write(struct mii_bus *bus, int phy_addr, int reg, u16 value) +{ + struct net_device *netdev = bus->priv; + struct et131x_adapter *adapter = netdev_priv(netdev); + + return et131x_mii_write(adapter, reg, value); +} + +int et131x_mdio_reset(struct mii_bus *bus) +{ + struct net_device *netdev = bus->priv; + struct et131x_adapter *adapter = netdev_priv(netdev); + + et131x_mii_write(adapter, MII_BMCR, BMCR_RESET); + + return 0; +} + +int et131x_mii_read(struct et131x_adapter *adapter, u8 reg, u16 *value) +{ + struct phy_device *phydev = adapter->phydev; + + if (!phydev) + return -EIO; + + return et131x_phy_mii_read(adapter, phydev->addr, reg, value); +} + +/** + * et131x_phy_mii_read - Read from the PHY through the MII Interface on the MAC + * @adapter: pointer to our private adapter structure + * @addr: the address of the transceiver + * @reg: the register to read + * @value: pointer to a 16-bit value in which the value will be stored + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +int et131x_phy_mii_read(struct et131x_adapter *adapter, u8 addr, + u8 reg, u16 *value) +{ + struct mac_regs __iomem *mac = &adapter->regs->mac; + int status = 0; + u32 delay = 0; + u32 mii_addr; + u32 mii_cmd; + u32 mii_indicator; + + /* Save a local copy of the registers we are dealing with so we can + * set them back + */ + mii_addr = readl(&mac->mii_mgmt_addr); + mii_cmd = readl(&mac->mii_mgmt_cmd); + + /* Stop the current operation */ + writel(0, &mac->mii_mgmt_cmd); + + /* Set up the register we need to read from on the correct PHY */ + writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr); + + writel(0x1, &mac->mii_mgmt_cmd); + + do { + udelay(50); + delay++; + mii_indicator = readl(&mac->mii_mgmt_indicator); + } while ((mii_indicator & MGMT_WAIT) && delay < 50); + + /* If we hit the max delay, we could not read the register */ + if (delay == 50) { + dev_warn(&adapter->pdev->dev, + "reg 0x%08x could not be read\n", reg); + dev_warn(&adapter->pdev->dev, "status is 0x%08x\n", + mii_indicator); + + status = -EIO; + } + + /* If we hit here we were able to read the register and we need to + * return the value to the caller */ + *value = readl(&mac->mii_mgmt_stat) & 0xFFFF; + + /* Stop the read operation */ + writel(0, &mac->mii_mgmt_cmd); + + /* set the registers we touched back to the state at which we entered + * this function + */ + writel(mii_addr, &mac->mii_mgmt_addr); + writel(mii_cmd, &mac->mii_mgmt_cmd); + + return status; +} + +/** + * et131x_mii_write - Write to a PHY register through the MII interface of the MAC + * @adapter: pointer to our private adapter structure + * @reg: the register to read + * @value: 16-bit value to write + * + * FIXME: one caller in netdev still + * + * Return 0 on success, errno on failure (as defined in errno.h) + */ +int et131x_mii_write(struct et131x_adapter *adapter, u8 reg, u16 value) +{ + struct mac_regs __iomem *mac = &adapter->regs->mac; + struct phy_device *phydev = adapter->phydev; + int status = 0; + u8 addr; + u32 delay = 0; + u32 mii_addr; + u32 mii_cmd; + u32 mii_indicator; + + if (!phydev) + return -EIO; + + addr = phydev->addr; + + /* Save a local copy of the registers we are dealing with so we can + * set them back + */ + mii_addr = readl(&mac->mii_mgmt_addr); + mii_cmd = readl(&mac->mii_mgmt_cmd); + + /* Stop the current operation */ + writel(0, &mac->mii_mgmt_cmd); + + /* Set up the register we need to write to on the correct PHY */ + writel(MII_ADDR(addr, reg), &mac->mii_mgmt_addr); + + /* Add the value to write to the registers to the mac */ + writel(value, &mac->mii_mgmt_ctrl); + + do { + udelay(50); + delay++; + mii_indicator = readl(&mac->mii_mgmt_indicator); + } while ((mii_indicator & MGMT_BUSY) && delay < 100); + + /* If we hit the max delay, we could not write the register */ + if (delay == 100) { + u16 tmp; + + dev_warn(&adapter->pdev->dev, + "reg 0x%08x could not be written", reg); + dev_warn(&adapter->pdev->dev, "status is 0x%08x\n", + mii_indicator); + dev_warn(&adapter->pdev->dev, "command is 0x%08x\n", + readl(&mac->mii_mgmt_cmd)); + + et131x_mii_read(adapter, reg, &tmp); + + status = -EIO; + } + /* Stop the write operation */ + writel(0, &mac->mii_mgmt_cmd); + + /* + * set the registers we touched back to the state at which we entered + * this function + */ + writel(mii_addr, &mac->mii_mgmt_addr); + writel(mii_cmd, &mac->mii_mgmt_cmd); + + return status; +} + +/** + * et1310_phy_power_down - PHY power control + * @adapter: device to control + * @down: true for off/false for back on + * + * one hundred, ten, one thousand megs + * How would you like to have your LAN accessed + * Can't you see that this code processed + * Phy power, phy power.. + */ +void et1310_phy_power_down(struct et131x_adapter *adapter, bool down) +{ + u16 data; + + et131x_mii_read(adapter, MII_BMCR, &data); + data &= ~BMCR_PDOWN; + if (down) + data |= BMCR_PDOWN; + et131x_mii_write(adapter, MII_BMCR, data); +} + +/* Still used from _mac for BIT_READ */ +void et1310_phy_access_mii_bit(struct et131x_adapter *adapter, u16 action, + u16 regnum, u16 bitnum, u8 *value) +{ + u16 reg; + u16 mask = 0x0001 << bitnum; + + /* Read the requested register */ + et131x_mii_read(adapter, regnum, ®); + + switch (action) { + case TRUEPHY_BIT_READ: + *value = (reg & mask) >> bitnum; + break; + + case TRUEPHY_BIT_SET: + et131x_mii_write(adapter, regnum, reg | mask); + break; + + case TRUEPHY_BIT_CLEAR: + et131x_mii_write(adapter, regnum, reg & ~mask); + break; + + default: + break; + } +} + +/** + * et131x_xcvr_init - Init the phy if we are setting it into force mode + * @adapter: pointer to our private adapter structure + * + */ +void et131x_xcvr_init(struct et131x_adapter *adapter) +{ + u16 imr; + u16 isr; + u16 lcr2; + + et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, &isr); + et131x_mii_read(adapter, PHY_INTERRUPT_MASK, &imr); + + /* Set the link status interrupt only. Bad behavior when link status + * and auto neg are set, we run into a nested interrupt problem + */ + imr |= (ET_PHY_INT_MASK_AUTONEGSTAT & + ET_PHY_INT_MASK_LINKSTAT & + ET_PHY_INT_MASK_ENABLE); + + et131x_mii_write(adapter, PHY_INTERRUPT_MASK, imr); + + /* Set the LED behavior such that LED 1 indicates speed (off = + * 10Mbits, blink = 100Mbits, on = 1000Mbits) and LED 2 indicates + * link and activity (on for link, blink off for activity). + * + * NOTE: Some customizations have been added here for specific + * vendors; The LED behavior is now determined by vendor data in the + * EEPROM. However, the above description is the default. + */ + if ((adapter->eeprom_data[1] & 0x4) == 0) { + et131x_mii_read(adapter, PHY_LED_2, &lcr2); + + lcr2 &= (ET_LED2_LED_100TX & ET_LED2_LED_1000T); + lcr2 |= (LED_VAL_LINKON_ACTIVE << LED_LINK_SHIFT); + + if ((adapter->eeprom_data[1] & 0x8) == 0) + lcr2 |= (LED_VAL_1000BT_100BTX << LED_TXRX_SHIFT); + else + lcr2 |= (LED_VAL_LINKON << LED_TXRX_SHIFT); + + et131x_mii_write(adapter, PHY_LED_2, lcr2); + } +} + +/* PM functions */ + +/** + * et1310_in_phy_coma - check if the device is in phy coma + * @adapter: pointer to our adapter structure + * + * Returns 0 if the device is not in phy coma, 1 if it is in phy coma + */ +int et1310_in_phy_coma(struct et131x_adapter *adapter) +{ + u32 pmcsr; + + pmcsr = readl(&adapter->regs->global.pm_csr); + + return ET_PM_PHY_SW_COMA & pmcsr ? 1 : 0; +} + +/** + * et1310_enable_phy_coma - called when network cable is unplugged + * @adapter: pointer to our adapter structure + * + * driver receive an phy status change interrupt while in D0 and check that + * phy_status is down. + * + * -- gate off JAGCore; + * -- set gigE PHY in Coma mode + * -- wake on phy_interrupt; Perform software reset JAGCore, + * re-initialize jagcore and gigE PHY + * + * Add D0-ASPM-PhyLinkDown Support: + * -- while in D0, when there is a phy_interrupt indicating phy link + * down status, call the MPSetPhyComa routine to enter this active + * state power saving mode + * -- while in D0-ASPM-PhyLinkDown mode, when there is a phy_interrupt + * indicating linkup status, call the MPDisablePhyComa routine to + * restore JAGCore and gigE PHY + */ +void et1310_enable_phy_coma(struct et131x_adapter *adapter) +{ + unsigned long flags; + u32 pmcsr; + + pmcsr = readl(&adapter->regs->global.pm_csr); + + /* Save the GbE PHY speed and duplex modes. Need to restore this + * when cable is plugged back in + */ + /* + * TODO - when PM is re-enabled, check if we need to + * perform a similar task as this - + * adapter->pdown_speed = adapter->ai_force_speed; + * adapter->pdown_duplex = adapter->ai_force_duplex; + */ + + /* Stop sending packets. */ + spin_lock_irqsave(&adapter->send_hw_lock, flags); + adapter->flags |= fMP_ADAPTER_LOWER_POWER; + spin_unlock_irqrestore(&adapter->send_hw_lock, flags); + + /* Wait for outstanding Receive packets */ + + et131x_disable_txrx(adapter->netdev); + + /* Gate off JAGCore 3 clock domains */ + pmcsr &= ~ET_PMCSR_INIT; + writel(pmcsr, &adapter->regs->global.pm_csr); + + /* Program gigE PHY in to Coma mode */ + pmcsr |= ET_PM_PHY_SW_COMA; + writel(pmcsr, &adapter->regs->global.pm_csr); +} + +/** + * et1310_disable_phy_coma - Disable the Phy Coma Mode + * @adapter: pointer to our adapter structure + */ +void et1310_disable_phy_coma(struct et131x_adapter *adapter) +{ + u32 pmcsr; + + pmcsr = readl(&adapter->regs->global.pm_csr); + + /* Disable phy_sw_coma register and re-enable JAGCore clocks */ + pmcsr |= ET_PMCSR_INIT; + pmcsr &= ~ET_PM_PHY_SW_COMA; + writel(pmcsr, &adapter->regs->global.pm_csr); + + /* Restore the GbE PHY speed and duplex modes; + * Reset JAGCore; re-configure and initialize JAGCore and gigE PHY + */ + /* TODO - when PM is re-enabled, check if we need to + * perform a similar task as this - + * adapter->ai_force_speed = adapter->pdown_speed; + * adapter->ai_force_duplex = adapter->pdown_duplex; + */ + + /* Re-initialize the send structures */ + et131x_init_send(adapter); + + /* Reset the RFD list and re-start RU */ + et131x_reset_recv(adapter); + + /* Bring the device back to the state it was during init prior to + * autonegotiation being complete. This way, when we get the auto-neg + * complete interrupt, we can complete init by calling ConfigMacREGS2. + */ + et131x_soft_reset(adapter); + + /* setup et1310 as per the documentation ?? */ + et131x_adapter_setup(adapter); + + /* Allow Tx to restart */ + adapter->flags &= ~fMP_ADAPTER_LOWER_POWER; + + et131x_enable_txrx(adapter->netdev); +} + +/* RX functions */ + +static inline u32 bump_free_buff_ring(u32 *free_buff_ring, u32 limit) +{ + u32 tmp_free_buff_ring = *free_buff_ring; + tmp_free_buff_ring++; + /* This works for all cases where limit < 1024. The 1023 case + works because 1023++ is 1024 which means the if condition is not + taken but the carry of the bit into the wrap bit toggles the wrap + value correctly */ + if ((tmp_free_buff_ring & ET_DMA10_MASK) > limit) { + tmp_free_buff_ring &= ~ET_DMA10_MASK; + tmp_free_buff_ring ^= ET_DMA10_WRAP; + } + /* For the 1023 case */ + tmp_free_buff_ring &= (ET_DMA10_MASK|ET_DMA10_WRAP); + *free_buff_ring = tmp_free_buff_ring; + return tmp_free_buff_ring; +} + +/** + * et131x_rx_dma_memory_alloc + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success and errno on failure (as defined in errno.h) + * + * Allocates Free buffer ring 1 for sure, free buffer ring 0 if required, + * and the Packet Status Ring. + */ +int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter) +{ + u32 i, j; + u32 bufsize; + u32 pktstat_ringsize, fbr_chunksize; + struct rx_ring *rx_ring; + + /* Setup some convenience pointers */ + rx_ring = &adapter->rx_ring; + + /* Alloc memory for the lookup table */ +#ifdef USE_FBR0 + rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL); +#endif + rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL); + + /* The first thing we will do is configure the sizes of the buffer + * rings. These will change based on jumbo packet support. Larger + * jumbo packets increases the size of each entry in FBR0, and the + * number of entries in FBR0, while at the same time decreasing the + * number of entries in FBR1. + * + * FBR1 holds "large" frames, FBR0 holds "small" frames. If FBR1 + * entries are huge in order to accommodate a "jumbo" frame, then it + * will have less entries. Conversely, FBR1 will now be relied upon + * to carry more "normal" frames, thus it's entry size also increases + * and the number of entries goes up too (since it now carries + * "small" + "regular" packets. + * + * In this scheme, we try to maintain 512 entries between the two + * rings. Also, FBR1 remains a constant size - when it's size doubles + * the number of entries halves. FBR0 increases in size, however. + */ + + if (adapter->registry_jumbo_packet < 2048) { +#ifdef USE_FBR0 + rx_ring->fbr0_buffsize = 256; + rx_ring->fbr0_num_entries = 512; +#endif + rx_ring->fbr1_buffsize = 2048; + rx_ring->fbr1_num_entries = 512; + } else if (adapter->registry_jumbo_packet < 4096) { +#ifdef USE_FBR0 + rx_ring->fbr0_buffsize = 512; + rx_ring->fbr0_num_entries = 1024; +#endif + rx_ring->fbr1_buffsize = 4096; + rx_ring->fbr1_num_entries = 512; + } else { +#ifdef USE_FBR0 + rx_ring->fbr0_buffsize = 1024; + rx_ring->fbr0_num_entries = 768; +#endif + rx_ring->fbr1_buffsize = 16384; + rx_ring->fbr1_num_entries = 128; + } + +#ifdef USE_FBR0 + adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr0_num_entries + + adapter->rx_ring.fbr1_num_entries; +#else + adapter->rx_ring.psr_num_entries = adapter->rx_ring.fbr1_num_entries; +#endif + + /* Allocate an area of memory for Free Buffer Ring 1 */ + bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + 0xfff; + rx_ring->fbr1_ring_virtaddr = pci_alloc_consistent(adapter->pdev, + bufsize, + &rx_ring->fbr1_ring_physaddr); + if (!rx_ring->fbr1_ring_virtaddr) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Free Buffer Ring 1\n"); + return -ENOMEM; + } + + /* Save physical address + * + * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, + * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses + * are ever returned, make sure the high part is retrieved here + * before storing the adjusted address. + */ + rx_ring->fbr1_real_physaddr = rx_ring->fbr1_ring_physaddr; + + /* Align Free Buffer Ring 1 on a 4K boundary */ + et131x_align_allocated_memory(adapter, + &rx_ring->fbr1_real_physaddr, + &rx_ring->fbr1_offset, 0x0FFF); + + rx_ring->fbr1_ring_virtaddr = + (void *)((u8 *) rx_ring->fbr1_ring_virtaddr + + rx_ring->fbr1_offset); + +#ifdef USE_FBR0 + /* Allocate an area of memory for Free Buffer Ring 0 */ + bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + 0xfff; + rx_ring->fbr0_ring_virtaddr = pci_alloc_consistent(adapter->pdev, + bufsize, + &rx_ring->fbr0_ring_physaddr); + if (!rx_ring->fbr0_ring_virtaddr) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Free Buffer Ring 0\n"); + return -ENOMEM; + } + + /* Save physical address + * + * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, + * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses + * are ever returned, make sure the high part is retrieved here before + * storing the adjusted address. + */ + rx_ring->fbr0_real_physaddr = rx_ring->fbr0_ring_physaddr; + + /* Align Free Buffer Ring 0 on a 4K boundary */ + et131x_align_allocated_memory(adapter, + &rx_ring->fbr0_real_physaddr, + &rx_ring->fbr0_offset, 0x0FFF); + + rx_ring->fbr0_ring_virtaddr = + (void *)((u8 *) rx_ring->fbr0_ring_virtaddr + + rx_ring->fbr0_offset); +#endif + for (i = 0; i < (rx_ring->fbr1_num_entries / FBR_CHUNKS); i++) { + u64 fbr1_offset; + u64 fbr1_tmp_physaddr; + u32 fbr1_align; + + /* This code allocates an area of memory big enough for N + * free buffers + (buffer_size - 1) so that the buffers can + * be aligned on 4k boundaries. If each buffer were aligned + * to a buffer_size boundary, the effect would be to double + * the size of FBR0. By allocating N buffers at once, we + * reduce this overhead. + */ + if (rx_ring->fbr1_buffsize > 4096) + fbr1_align = 4096; + else + fbr1_align = rx_ring->fbr1_buffsize; + + fbr_chunksize = + (FBR_CHUNKS * rx_ring->fbr1_buffsize) + fbr1_align - 1; + rx_ring->fbr1_mem_virtaddrs[i] = + pci_alloc_consistent(adapter->pdev, fbr_chunksize, + &rx_ring->fbr1_mem_physaddrs[i]); + + if (!rx_ring->fbr1_mem_virtaddrs[i]) { + dev_err(&adapter->pdev->dev, + "Could not alloc memory\n"); + return -ENOMEM; + } + + /* See NOTE in "Save Physical Address" comment above */ + fbr1_tmp_physaddr = rx_ring->fbr1_mem_physaddrs[i]; + + et131x_align_allocated_memory(adapter, + &fbr1_tmp_physaddr, + &fbr1_offset, (fbr1_align - 1)); + + for (j = 0; j < FBR_CHUNKS; j++) { + u32 index = (i * FBR_CHUNKS) + j; + + /* Save the Virtual address of this index for quick + * access later + */ + rx_ring->fbr[1]->virt[index] = + (u8 *) rx_ring->fbr1_mem_virtaddrs[i] + + (j * rx_ring->fbr1_buffsize) + fbr1_offset; + + /* now store the physical address in the descriptor + * so the device can access it + */ + rx_ring->fbr[1]->bus_high[index] = + (u32) (fbr1_tmp_physaddr >> 32); + rx_ring->fbr[1]->bus_low[index] = + (u32) fbr1_tmp_physaddr; + + fbr1_tmp_physaddr += rx_ring->fbr1_buffsize; + + rx_ring->fbr[1]->buffer1[index] = + rx_ring->fbr[1]->virt[index]; + rx_ring->fbr[1]->buffer2[index] = + rx_ring->fbr[1]->virt[index] - 4; + } + } + +#ifdef USE_FBR0 + /* Same for FBR0 (if in use) */ + for (i = 0; i < (rx_ring->fbr0_num_entries / FBR_CHUNKS); i++) { + u64 fbr0_offset; + u64 fbr0_tmp_physaddr; + + fbr_chunksize = + ((FBR_CHUNKS + 1) * rx_ring->fbr0_buffsize) - 1; + rx_ring->fbr0_mem_virtaddrs[i] = + pci_alloc_consistent(adapter->pdev, fbr_chunksize, + &rx_ring->fbr0_mem_physaddrs[i]); + + if (!rx_ring->fbr0_mem_virtaddrs[i]) { + dev_err(&adapter->pdev->dev, + "Could not alloc memory\n"); + return -ENOMEM; + } + + /* See NOTE in "Save Physical Address" comment above */ + fbr0_tmp_physaddr = rx_ring->fbr0_mem_physaddrs[i]; + + et131x_align_allocated_memory(adapter, + &fbr0_tmp_physaddr, + &fbr0_offset, + rx_ring->fbr0_buffsize - 1); + + for (j = 0; j < FBR_CHUNKS; j++) { + u32 index = (i * FBR_CHUNKS) + j; + + rx_ring->fbr[0]->virt[index] = + (u8 *) rx_ring->fbr0_mem_virtaddrs[i] + + (j * rx_ring->fbr0_buffsize) + fbr0_offset; + + rx_ring->fbr[0]->bus_high[index] = + (u32) (fbr0_tmp_physaddr >> 32); + rx_ring->fbr[0]->bus_low[index] = + (u32) fbr0_tmp_physaddr; + + fbr0_tmp_physaddr += rx_ring->fbr0_buffsize; + + rx_ring->fbr[0]->buffer1[index] = + rx_ring->fbr[0]->virt[index]; + rx_ring->fbr[0]->buffer2[index] = + rx_ring->fbr[0]->virt[index] - 4; + } + } +#endif + + /* Allocate an area of memory for FIFO of Packet Status ring entries */ + pktstat_ringsize = + sizeof(struct pkt_stat_desc) * adapter->rx_ring.psr_num_entries; + + rx_ring->ps_ring_virtaddr = pci_alloc_consistent(adapter->pdev, + pktstat_ringsize, + &rx_ring->ps_ring_physaddr); + + if (!rx_ring->ps_ring_virtaddr) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Packet Status Ring\n"); + return -ENOMEM; + } + printk(KERN_INFO "Packet Status Ring %lx\n", + (unsigned long) rx_ring->ps_ring_physaddr); + + /* + * NOTE : pci_alloc_consistent(), used above to alloc DMA regions, + * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses + * are ever returned, make sure the high part is retrieved here before + * storing the adjusted address. + */ + + /* Allocate an area of memory for writeback of status information */ + rx_ring->rx_status_block = pci_alloc_consistent(adapter->pdev, + sizeof(struct rx_status_block), + &rx_ring->rx_status_bus); + if (!rx_ring->rx_status_block) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Status Block\n"); + return -ENOMEM; + } + rx_ring->num_rfd = NIC_DEFAULT_NUM_RFD; + printk(KERN_INFO "PRS %lx\n", (unsigned long)rx_ring->rx_status_bus); + + /* Recv + * pci_pool_create initializes a lookaside list. After successful + * creation, nonpaged fixed-size blocks can be allocated from and + * freed to the lookaside list. + * RFDs will be allocated from this pool. + */ + rx_ring->recv_lookaside = kmem_cache_create(adapter->netdev->name, + sizeof(struct rfd), + 0, + SLAB_CACHE_DMA | + SLAB_HWCACHE_ALIGN, + NULL); + + adapter->flags |= fMP_ADAPTER_RECV_LOOKASIDE; + + /* The RFDs are going to be put on lists later on, so initialize the + * lists now. + */ + INIT_LIST_HEAD(&rx_ring->recv_list); + return 0; +} + +/** + * et131x_rx_dma_memory_free - Free all memory allocated within this module. + * @adapter: pointer to our private adapter structure + */ +void et131x_rx_dma_memory_free(struct et131x_adapter *adapter) +{ + u32 index; + u32 bufsize; + u32 pktstat_ringsize; + struct rfd *rfd; + struct rx_ring *rx_ring; + + /* Setup some convenience pointers */ + rx_ring = &adapter->rx_ring; + + /* Free RFDs and associated packet descriptors */ + WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd); + + while (!list_empty(&rx_ring->recv_list)) { + rfd = (struct rfd *) list_entry(rx_ring->recv_list.next, + struct rfd, list_node); + + list_del(&rfd->list_node); + rfd->skb = NULL; + kmem_cache_free(adapter->rx_ring.recv_lookaside, rfd); + } + + /* Free Free Buffer Ring 1 */ + if (rx_ring->fbr1_ring_virtaddr) { + /* First the packet memory */ + for (index = 0; index < + (rx_ring->fbr1_num_entries / FBR_CHUNKS); index++) { + if (rx_ring->fbr1_mem_virtaddrs[index]) { + u32 fbr1_align; + + if (rx_ring->fbr1_buffsize > 4096) + fbr1_align = 4096; + else + fbr1_align = rx_ring->fbr1_buffsize; + + bufsize = + (rx_ring->fbr1_buffsize * FBR_CHUNKS) + + fbr1_align - 1; + + pci_free_consistent(adapter->pdev, + bufsize, + rx_ring->fbr1_mem_virtaddrs[index], + rx_ring->fbr1_mem_physaddrs[index]); + + rx_ring->fbr1_mem_virtaddrs[index] = NULL; + } + } + + /* Now the FIFO itself */ + rx_ring->fbr1_ring_virtaddr = (void *)((u8 *) + rx_ring->fbr1_ring_virtaddr - rx_ring->fbr1_offset); + + bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr1_num_entries) + + 0xfff; + + pci_free_consistent(adapter->pdev, bufsize, + rx_ring->fbr1_ring_virtaddr, + rx_ring->fbr1_ring_physaddr); + + rx_ring->fbr1_ring_virtaddr = NULL; + } + +#ifdef USE_FBR0 + /* Now the same for Free Buffer Ring 0 */ + if (rx_ring->fbr0_ring_virtaddr) { + /* First the packet memory */ + for (index = 0; index < + (rx_ring->fbr0_num_entries / FBR_CHUNKS); index++) { + if (rx_ring->fbr0_mem_virtaddrs[index]) { + bufsize = + (rx_ring->fbr0_buffsize * + (FBR_CHUNKS + 1)) - 1; + + pci_free_consistent(adapter->pdev, + bufsize, + rx_ring->fbr0_mem_virtaddrs[index], + rx_ring->fbr0_mem_physaddrs[index]); + + rx_ring->fbr0_mem_virtaddrs[index] = NULL; + } + } + + /* Now the FIFO itself */ + rx_ring->fbr0_ring_virtaddr = (void *)((u8 *) + rx_ring->fbr0_ring_virtaddr - rx_ring->fbr0_offset); + + bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr0_num_entries) + + 0xfff; + + pci_free_consistent(adapter->pdev, + bufsize, + rx_ring->fbr0_ring_virtaddr, + rx_ring->fbr0_ring_physaddr); + + rx_ring->fbr0_ring_virtaddr = NULL; + } +#endif + + /* Free Packet Status Ring */ + if (rx_ring->ps_ring_virtaddr) { + pktstat_ringsize = + sizeof(struct pkt_stat_desc) * + adapter->rx_ring.psr_num_entries; + + pci_free_consistent(adapter->pdev, pktstat_ringsize, + rx_ring->ps_ring_virtaddr, + rx_ring->ps_ring_physaddr); + + rx_ring->ps_ring_virtaddr = NULL; + } + + /* Free area of memory for the writeback of status information */ + if (rx_ring->rx_status_block) { + pci_free_consistent(adapter->pdev, + sizeof(struct rx_status_block), + rx_ring->rx_status_block, rx_ring->rx_status_bus); + rx_ring->rx_status_block = NULL; + } + + /* Free receive buffer pool */ + + /* Free receive packet pool */ + + /* Destroy the lookaside (RFD) pool */ + if (adapter->flags & fMP_ADAPTER_RECV_LOOKASIDE) { + kmem_cache_destroy(rx_ring->recv_lookaside); + adapter->flags &= ~fMP_ADAPTER_RECV_LOOKASIDE; + } + + /* Free the FBR Lookup Table */ +#ifdef USE_FBR0 + kfree(rx_ring->fbr[0]); +#endif + + kfree(rx_ring->fbr[1]); + + /* Reset Counters */ + rx_ring->num_ready_recv = 0; +} + +/** + * et131x_init_recv - Initialize receive data structures. + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success and errno on failure (as defined in errno.h) + */ +int et131x_init_recv(struct et131x_adapter *adapter) +{ + int status = -ENOMEM; + struct rfd *rfd = NULL; + u32 rfdct; + u32 numrfd = 0; + struct rx_ring *rx_ring; + + /* Setup some convenience pointers */ + rx_ring = &adapter->rx_ring; + + /* Setup each RFD */ + for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) { + rfd = kmem_cache_alloc(rx_ring->recv_lookaside, + GFP_ATOMIC | GFP_DMA); + + if (!rfd) { + dev_err(&adapter->pdev->dev, + "Couldn't alloc RFD out of kmem_cache\n"); + status = -ENOMEM; + continue; + } + + rfd->skb = NULL; + + /* Add this RFD to the recv_list */ + list_add_tail(&rfd->list_node, &rx_ring->recv_list); + + /* Increment both the available RFD's, and the total RFD's. */ + rx_ring->num_ready_recv++; + numrfd++; + } + + if (numrfd > NIC_MIN_NUM_RFD) + status = 0; + + rx_ring->num_rfd = numrfd; + + if (status != 0) { + kmem_cache_free(rx_ring->recv_lookaside, rfd); + dev_err(&adapter->pdev->dev, + "Allocation problems in et131x_init_recv\n"); + } + return status; +} + +/** + * et131x_config_rx_dma_regs - Start of Rx_DMA init sequence + * @adapter: pointer to our adapter structure + */ +void et131x_config_rx_dma_regs(struct et131x_adapter *adapter) +{ + struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma; + struct rx_ring *rx_local = &adapter->rx_ring; + struct fbr_desc *fbr_entry; + u32 entry; + u32 psr_num_des; + unsigned long flags; + + /* Halt RXDMA to perform the reconfigure. */ + et131x_rx_dma_disable(adapter); + + /* Load the completion writeback physical address + * + * NOTE : pci_alloc_consistent(), used above to alloc DMA regions, + * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses + * are ever returned, make sure the high part is retrieved here + * before storing the adjusted address. + */ + writel((u32) ((u64)rx_local->rx_status_bus >> 32), + &rx_dma->dma_wb_base_hi); + writel((u32) rx_local->rx_status_bus, &rx_dma->dma_wb_base_lo); + + memset(rx_local->rx_status_block, 0, sizeof(struct rx_status_block)); + + /* Set the address and parameters of the packet status ring into the + * 1310's registers + */ + writel((u32) ((u64)rx_local->ps_ring_physaddr >> 32), + &rx_dma->psr_base_hi); + writel((u32) rx_local->ps_ring_physaddr, &rx_dma->psr_base_lo); + writel(rx_local->psr_num_entries - 1, &rx_dma->psr_num_des); + writel(0, &rx_dma->psr_full_offset); + + psr_num_des = readl(&rx_dma->psr_num_des) & 0xFFF; + writel((psr_num_des * LO_MARK_PERCENT_FOR_PSR) / 100, + &rx_dma->psr_min_des); + + spin_lock_irqsave(&adapter->rcv_lock, flags); + + /* These local variables track the PSR in the adapter structure */ + rx_local->local_psr_full = 0; + + /* Now's the best time to initialize FBR1 contents */ + fbr_entry = (struct fbr_desc *) rx_local->fbr1_ring_virtaddr; + for (entry = 0; entry < rx_local->fbr1_num_entries; entry++) { + fbr_entry->addr_hi = rx_local->fbr[1]->bus_high[entry]; + fbr_entry->addr_lo = rx_local->fbr[1]->bus_low[entry]; + fbr_entry->word2 = entry; + fbr_entry++; + } + + /* Set the address and parameters of Free buffer ring 1 (and 0 if + * required) into the 1310's registers + */ + writel((u32) (rx_local->fbr1_real_physaddr >> 32), + &rx_dma->fbr1_base_hi); + writel((u32) rx_local->fbr1_real_physaddr, &rx_dma->fbr1_base_lo); + writel(rx_local->fbr1_num_entries - 1, &rx_dma->fbr1_num_des); + writel(ET_DMA10_WRAP, &rx_dma->fbr1_full_offset); + + /* This variable tracks the free buffer ring 1 full position, so it + * has to match the above. + */ + rx_local->local_fbr1_full = ET_DMA10_WRAP; + writel( + ((rx_local->fbr1_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1, + &rx_dma->fbr1_min_des); + +#ifdef USE_FBR0 + /* Now's the best time to initialize FBR0 contents */ + fbr_entry = (struct fbr_desc *) rx_local->fbr0_ring_virtaddr; + for (entry = 0; entry < rx_local->fbr0_num_entries; entry++) { + fbr_entry->addr_hi = rx_local->fbr[0]->bus_high[entry]; + fbr_entry->addr_lo = rx_local->fbr[0]->bus_low[entry]; + fbr_entry->word2 = entry; + fbr_entry++; + } + + writel((u32) (rx_local->fbr0_real_physaddr >> 32), + &rx_dma->fbr0_base_hi); + writel((u32) rx_local->fbr0_real_physaddr, &rx_dma->fbr0_base_lo); + writel(rx_local->fbr0_num_entries - 1, &rx_dma->fbr0_num_des); + writel(ET_DMA10_WRAP, &rx_dma->fbr0_full_offset); + + /* This variable tracks the free buffer ring 0 full position, so it + * has to match the above. + */ + rx_local->local_fbr0_full = ET_DMA10_WRAP; + writel( + ((rx_local->fbr0_num_entries * LO_MARK_PERCENT_FOR_RX) / 100) - 1, + &rx_dma->fbr0_min_des); +#endif + + /* Program the number of packets we will receive before generating an + * interrupt. + * For version B silicon, this value gets updated once autoneg is + *complete. + */ + writel(PARM_RX_NUM_BUFS_DEF, &rx_dma->num_pkt_done); + + /* The "time_done" is not working correctly to coalesce interrupts + * after a given time period, but rather is giving us an interrupt + * regardless of whether we have received packets. + * This value gets updated once autoneg is complete. + */ + writel(PARM_RX_TIME_INT_DEF, &rx_dma->max_pkt_time); + + spin_unlock_irqrestore(&adapter->rcv_lock, flags); +} + +/** + * et131x_set_rx_dma_timer - Set the heartbeat timer according to line rate. + * @adapter: pointer to our adapter structure + */ +void et131x_set_rx_dma_timer(struct et131x_adapter *adapter) +{ + struct phy_device *phydev = adapter->phydev; + + if (!phydev) + return; + + /* For version B silicon, we do not use the RxDMA timer for 10 and 100 + * Mbits/s line rates. We do not enable and RxDMA interrupt coalescing. + */ + if ((phydev->speed == SPEED_100) || (phydev->speed == SPEED_10)) { + writel(0, &adapter->regs->rxdma.max_pkt_time); + writel(1, &adapter->regs->rxdma.num_pkt_done); + } +} + +/** + * NICReturnRFD - Recycle a RFD and put it back onto the receive list + * @adapter: pointer to our adapter + * @rfd: pointer to the RFD + */ +static void nic_return_rfd(struct et131x_adapter *adapter, struct rfd *rfd) +{ + struct rx_ring *rx_local = &adapter->rx_ring; + struct rxdma_regs __iomem *rx_dma = &adapter->regs->rxdma; + u16 buff_index = rfd->bufferindex; + u8 ring_index = rfd->ringindex; + unsigned long flags; + + /* We don't use any of the OOB data besides status. Otherwise, we + * need to clean up OOB data + */ + if ( +#ifdef USE_FBR0 + (ring_index == 0 && buff_index < rx_local->fbr0_num_entries) || +#endif + (ring_index == 1 && buff_index < rx_local->fbr1_num_entries)) { + spin_lock_irqsave(&adapter->fbr_lock, flags); + + if (ring_index == 1) { + struct fbr_desc *next = + (struct fbr_desc *) (rx_local->fbr1_ring_virtaddr) + + INDEX10(rx_local->local_fbr1_full); + + /* Handle the Free Buffer Ring advancement here. Write + * the PA / Buffer Index for the returned buffer into + * the oldest (next to be freed)FBR entry + */ + next->addr_hi = rx_local->fbr[1]->bus_high[buff_index]; + next->addr_lo = rx_local->fbr[1]->bus_low[buff_index]; + next->word2 = buff_index; + + writel(bump_free_buff_ring(&rx_local->local_fbr1_full, + rx_local->fbr1_num_entries - 1), + &rx_dma->fbr1_full_offset); + } +#ifdef USE_FBR0 + else { + struct fbr_desc *next = (struct fbr_desc *) + rx_local->fbr0_ring_virtaddr + + INDEX10(rx_local->local_fbr0_full); + + /* Handle the Free Buffer Ring advancement here. Write + * the PA / Buffer Index for the returned buffer into + * the oldest (next to be freed) FBR entry + */ + next->addr_hi = rx_local->fbr[0]->bus_high[buff_index]; + next->addr_lo = rx_local->fbr[0]->bus_low[buff_index]; + next->word2 = buff_index; + + writel(bump_free_buff_ring(&rx_local->local_fbr0_full, + rx_local->fbr0_num_entries - 1), + &rx_dma->fbr0_full_offset); + } +#endif + spin_unlock_irqrestore(&adapter->fbr_lock, flags); + } else { + dev_err(&adapter->pdev->dev, + "%s illegal Buffer Index returned\n", __func__); + } + + /* The processing on this RFD is done, so put it back on the tail of + * our list + */ + spin_lock_irqsave(&adapter->rcv_lock, flags); + list_add_tail(&rfd->list_node, &rx_local->recv_list); + rx_local->num_ready_recv++; + spin_unlock_irqrestore(&adapter->rcv_lock, flags); + + WARN_ON(rx_local->num_ready_recv > rx_local->num_rfd); +} + +/** + * et131x_rx_dma_disable - Stop of Rx_DMA on the ET1310 + * @adapter: pointer to our adapter structure + */ +void et131x_rx_dma_disable(struct et131x_adapter *adapter) +{ + u32 csr; + /* Setup the receive dma configuration register */ + writel(0x00002001, &adapter->regs->rxdma.csr); + csr = readl(&adapter->regs->rxdma.csr); + if ((csr & 0x00020000) == 0) { /* Check halt status (bit 17) */ + udelay(5); + csr = readl(&adapter->regs->rxdma.csr); + if ((csr & 0x00020000) == 0) + dev_err(&adapter->pdev->dev, + "RX Dma failed to enter halt state. CSR 0x%08x\n", + csr); + } +} + +/** + * et131x_rx_dma_enable - re-start of Rx_DMA on the ET1310. + * @adapter: pointer to our adapter structure + */ +void et131x_rx_dma_enable(struct et131x_adapter *adapter) +{ + /* Setup the receive dma configuration register for normal operation */ + u32 csr = 0x2000; /* FBR1 enable */ + + if (adapter->rx_ring.fbr1_buffsize == 4096) + csr |= 0x0800; + else if (adapter->rx_ring.fbr1_buffsize == 8192) + csr |= 0x1000; + else if (adapter->rx_ring.fbr1_buffsize == 16384) + csr |= 0x1800; +#ifdef USE_FBR0 + csr |= 0x0400; /* FBR0 enable */ + if (adapter->rx_ring.fbr0_buffsize == 256) + csr |= 0x0100; + else if (adapter->rx_ring.fbr0_buffsize == 512) + csr |= 0x0200; + else if (adapter->rx_ring.fbr0_buffsize == 1024) + csr |= 0x0300; +#endif + writel(csr, &adapter->regs->rxdma.csr); + + csr = readl(&adapter->regs->rxdma.csr); + if ((csr & 0x00020000) != 0) { + udelay(5); + csr = readl(&adapter->regs->rxdma.csr); + if ((csr & 0x00020000) != 0) { + dev_err(&adapter->pdev->dev, + "RX Dma failed to exit halt state. CSR 0x%08x\n", + csr); + } + } +} + +/** + * nic_rx_pkts - Checks the hardware for available packets + * @adapter: pointer to our adapter + * + * Returns rfd, a pointer to our MPRFD. + * + * Checks the hardware for available packets, using completion ring + * If packets are available, it gets an RFD from the recv_list, attaches + * the packet to it, puts the RFD in the RecvPendList, and also returns + * the pointer to the RFD. + */ +static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter) +{ + struct rx_ring *rx_local = &adapter->rx_ring; + struct rx_status_block *status; + struct pkt_stat_desc *psr; + struct rfd *rfd; + u32 i; + u8 *buf; + unsigned long flags; + struct list_head *element; + u8 ring_index; + u16 buff_index; + u32 len; + u32 word0; + u32 word1; + + /* RX Status block is written by the DMA engine prior to every + * interrupt. It contains the next to be used entry in the Packet + * Status Ring, and also the two Free Buffer rings. + */ + status = rx_local->rx_status_block; + word1 = status->word1 >> 16; /* Get the useful bits */ + + /* Check the PSR and wrap bits do not match */ + if ((word1 & 0x1FFF) == (rx_local->local_psr_full & 0x1FFF)) + /* Looks like this ring is not updated yet */ + return NULL; + + /* The packet status ring indicates that data is available. */ + psr = (struct pkt_stat_desc *) (rx_local->ps_ring_virtaddr) + + (rx_local->local_psr_full & 0xFFF); + + /* Grab any information that is required once the PSR is + * advanced, since we can no longer rely on the memory being + * accurate + */ + len = psr->word1 & 0xFFFF; + ring_index = (psr->word1 >> 26) & 0x03; + buff_index = (psr->word1 >> 16) & 0x3FF; + word0 = psr->word0; + + /* Indicate that we have used this PSR entry. */ + /* FIXME wrap 12 */ + add_12bit(&rx_local->local_psr_full, 1); + if ( + (rx_local->local_psr_full & 0xFFF) > rx_local->psr_num_entries - 1) { + /* Clear psr full and toggle the wrap bit */ + rx_local->local_psr_full &= ~0xFFF; + rx_local->local_psr_full ^= 0x1000; + } + + writel(rx_local->local_psr_full, + &adapter->regs->rxdma.psr_full_offset); + +#ifndef USE_FBR0 + if (ring_index != 1) + return NULL; +#endif + +#ifdef USE_FBR0 + if (ring_index > 1 || + (ring_index == 0 && + buff_index > rx_local->fbr0_num_entries - 1) || + (ring_index == 1 && + buff_index > rx_local->fbr1_num_entries - 1)) +#else + if (ring_index != 1 || buff_index > rx_local->fbr1_num_entries - 1) +#endif + { + /* Illegal buffer or ring index cannot be used by S/W*/ + dev_err(&adapter->pdev->dev, + "NICRxPkts PSR Entry %d indicates " + "length of %d and/or bad bi(%d)\n", + rx_local->local_psr_full & 0xFFF, + len, buff_index); + return NULL; + } + + /* Get and fill the RFD. */ + spin_lock_irqsave(&adapter->rcv_lock, flags); + + rfd = NULL; + element = rx_local->recv_list.next; + rfd = (struct rfd *) list_entry(element, struct rfd, list_node); + + if (rfd == NULL) { + spin_unlock_irqrestore(&adapter->rcv_lock, flags); + return NULL; + } + + list_del(&rfd->list_node); + rx_local->num_ready_recv--; + + spin_unlock_irqrestore(&adapter->rcv_lock, flags); + + rfd->bufferindex = buff_index; + rfd->ringindex = ring_index; + + /* In V1 silicon, there is a bug which screws up filtering of + * runt packets. Therefore runt packet filtering is disabled + * in the MAC and the packets are dropped here. They are + * also counted here. + */ + if (len < (NIC_MIN_PACKET_SIZE + 4)) { + adapter->stats.rx_other_errs++; + len = 0; + } + + if (len) { + /* Determine if this is a multicast packet coming in */ + if ((word0 & ALCATEL_MULTICAST_PKT) && + !(word0 & ALCATEL_BROADCAST_PKT)) { + /* Promiscuous mode and Multicast mode are + * not mutually exclusive as was first + * thought. I guess Promiscuous is just + * considered a super-set of the other + * filters. Generally filter is 0x2b when in + * promiscuous mode. + */ + if ((adapter->packet_filter & + ET131X_PACKET_TYPE_MULTICAST) + && !(adapter->packet_filter & + ET131X_PACKET_TYPE_PROMISCUOUS) + && !(adapter->packet_filter & + ET131X_PACKET_TYPE_ALL_MULTICAST)) { + buf = rx_local->fbr[ring_index]-> + virt[buff_index]; + + /* Loop through our list to see if the + * destination address of this packet + * matches one in our list. + */ + for (i = 0; i < adapter->multicast_addr_count; + i++) { + if (buf[0] == + adapter->multicast_list[i][0] + && buf[1] == + adapter->multicast_list[i][1] + && buf[2] == + adapter->multicast_list[i][2] + && buf[3] == + adapter->multicast_list[i][3] + && buf[4] == + adapter->multicast_list[i][4] + && buf[5] == + adapter->multicast_list[i][5]) { + break; + } + } + + /* If our index is equal to the number + * of Multicast address we have, then + * this means we did not find this + * packet's matching address in our + * list. Set the len to zero, + * so we free our RFD when we return + * from this function. + */ + if (i == adapter->multicast_addr_count) + len = 0; + } + + if (len > 0) + adapter->stats.multicast_pkts_rcvd++; + } else if (word0 & ALCATEL_BROADCAST_PKT) + adapter->stats.broadcast_pkts_rcvd++; + else + /* Not sure what this counter measures in + * promiscuous mode. Perhaps we should check + * the MAC address to see if it is directed + * to us in promiscuous mode. + */ + adapter->stats.unicast_pkts_rcvd++; + } + + if (len > 0) { + struct sk_buff *skb = NULL; + + /*rfd->len = len - 4; */ + rfd->len = len; + + skb = dev_alloc_skb(rfd->len + 2); + if (!skb) { + dev_err(&adapter->pdev->dev, + "Couldn't alloc an SKB for Rx\n"); + return NULL; + } + + adapter->net_stats.rx_bytes += rfd->len; + + memcpy(skb_put(skb, rfd->len), + rx_local->fbr[ring_index]->virt[buff_index], + rfd->len); + + skb->dev = adapter->netdev; + skb->protocol = eth_type_trans(skb, adapter->netdev); + skb->ip_summed = CHECKSUM_NONE; + + netif_rx(skb); + } else { + rfd->len = 0; + } + + nic_return_rfd(adapter, rfd); + return rfd; +} + +/** + * et131x_reset_recv - Reset the receive list + * @adapter: pointer to our adapter + * + * Assumption, Rcv spinlock has been acquired. + */ +void et131x_reset_recv(struct et131x_adapter *adapter) +{ + WARN_ON(list_empty(&adapter->rx_ring.recv_list)); +} + +/** + * et131x_handle_recv_interrupt - Interrupt handler for receive processing + * @adapter: pointer to our adapter + * + * Assumption, Rcv spinlock has been acquired. + */ +void et131x_handle_recv_interrupt(struct et131x_adapter *adapter) +{ + struct rfd *rfd = NULL; + u32 count = 0; + bool done = true; + + /* Process up to available RFD's */ + while (count < NUM_PACKETS_HANDLED) { + if (list_empty(&adapter->rx_ring.recv_list)) { + WARN_ON(adapter->rx_ring.num_ready_recv != 0); + done = false; + break; + } + + rfd = nic_rx_pkts(adapter); + + if (rfd == NULL) + break; + + /* Do not receive any packets until a filter has been set. + * Do not receive any packets until we have link. + * If length is zero, return the RFD in order to advance the + * Free buffer ring. + */ + if (!adapter->packet_filter || + !netif_carrier_ok(adapter->netdev) || + rfd->len == 0) + continue; + + /* Increment the number of packets we received */ + adapter->net_stats.rx_packets++; + + /* Set the status on the packet, either resources or success */ + if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK) { + dev_warn(&adapter->pdev->dev, + "RFD's are running out\n"); + } + count++; + } + + if (count == NUM_PACKETS_HANDLED || !done) { + adapter->rx_ring.unfinished_receives = true; + writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO, + &adapter->regs->global.watchdog_timer); + } else + /* Watchdog timer will disable itself if appropriate. */ + adapter->rx_ring.unfinished_receives = false; +} + +/* TX functions */ + +/** + * et131x_tx_dma_memory_alloc + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success and errno on failure (as defined in errno.h). + * + * Allocates memory that will be visible both to the device and to the CPU. + * The OS will pass us packets, pointers to which we will insert in the Tx + * Descriptor queue. The device will read this queue to find the packets in + * memory. The device will update the "status" in memory each time it xmits a + * packet. + */ +int et131x_tx_dma_memory_alloc(struct et131x_adapter *adapter) +{ + int desc_size = 0; + struct tx_ring *tx_ring = &adapter->tx_ring; + + /* Allocate memory for the TCB's (Transmit Control Block) */ + adapter->tx_ring.tcb_ring = + kcalloc(NUM_TCB, sizeof(struct tcb), GFP_ATOMIC | GFP_DMA); + if (!adapter->tx_ring.tcb_ring) { + dev_err(&adapter->pdev->dev, "Cannot alloc memory for TCBs\n"); + return -ENOMEM; + } + + /* Allocate enough memory for the Tx descriptor ring, and allocate + * some extra so that the ring can be aligned on a 4k boundary. + */ + desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + 4096 - 1; + tx_ring->tx_desc_ring = + (struct tx_desc *) pci_alloc_consistent(adapter->pdev, desc_size, + &tx_ring->tx_desc_ring_pa); + if (!adapter->tx_ring.tx_desc_ring) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Tx Ring\n"); + return -ENOMEM; + } + + /* Save physical address + * + * NOTE: pci_alloc_consistent(), used above to alloc DMA regions, + * ALWAYS returns SAC (32-bit) addresses. If DAC (64-bit) addresses + * are ever returned, make sure the high part is retrieved here before + * storing the adjusted address. + */ + /* Allocate memory for the Tx status block */ + tx_ring->tx_status = pci_alloc_consistent(adapter->pdev, + sizeof(u32), + &tx_ring->tx_status_pa); + if (!adapter->tx_ring.tx_status_pa) { + dev_err(&adapter->pdev->dev, + "Cannot alloc memory for Tx status block\n"); + return -ENOMEM; + } + return 0; +} + +/** + * et131x_tx_dma_memory_free - Free all memory allocated within this module + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success and errno on failure (as defined in errno.h). + */ +void et131x_tx_dma_memory_free(struct et131x_adapter *adapter) +{ + int desc_size = 0; + + if (adapter->tx_ring.tx_desc_ring) { + /* Free memory relating to Tx rings here */ + desc_size = (sizeof(struct tx_desc) * NUM_DESC_PER_RING_TX) + + 4096 - 1; + pci_free_consistent(adapter->pdev, + desc_size, + adapter->tx_ring.tx_desc_ring, + adapter->tx_ring.tx_desc_ring_pa); + adapter->tx_ring.tx_desc_ring = NULL; + } + + /* Free memory for the Tx status block */ + if (adapter->tx_ring.tx_status) { + pci_free_consistent(adapter->pdev, + sizeof(u32), + adapter->tx_ring.tx_status, + adapter->tx_ring.tx_status_pa); + + adapter->tx_ring.tx_status = NULL; + } + /* Free the memory for the tcb structures */ + kfree(adapter->tx_ring.tcb_ring); +} + +/** + * et131x_config_tx_dma_regs - Set up the tx dma section of the JAGCore. + * @adapter: pointer to our private adapter structure + * + * Configure the transmit engine with the ring buffers we have created + * and prepare it for use. + */ +void et131x_config_tx_dma_regs(struct et131x_adapter *adapter) +{ + struct txdma_regs __iomem *txdma = &adapter->regs->txdma; + + /* Load the hardware with the start of the transmit descriptor ring. */ + writel((u32) ((u64)adapter->tx_ring.tx_desc_ring_pa >> 32), + &txdma->pr_base_hi); + writel((u32) adapter->tx_ring.tx_desc_ring_pa, + &txdma->pr_base_lo); + + /* Initialise the transmit DMA engine */ + writel(NUM_DESC_PER_RING_TX - 1, &txdma->pr_num_des); + + /* Load the completion writeback physical address */ + writel((u32)((u64)adapter->tx_ring.tx_status_pa >> 32), + &txdma->dma_wb_base_hi); + writel((u32)adapter->tx_ring.tx_status_pa, &txdma->dma_wb_base_lo); + + *adapter->tx_ring.tx_status = 0; + + writel(0, &txdma->service_request); + adapter->tx_ring.send_idx = 0; +} + +/** + * et131x_tx_dma_disable - Stop of Tx_DMA on the ET1310 + * @adapter: pointer to our adapter structure + */ +void et131x_tx_dma_disable(struct et131x_adapter *adapter) +{ + /* Setup the tramsmit dma configuration register */ + writel(ET_TXDMA_CSR_HALT|ET_TXDMA_SNGL_EPKT, + &adapter->regs->txdma.csr); +} + +/** + * et131x_tx_dma_enable - re-start of Tx_DMA on the ET1310. + * @adapter: pointer to our adapter structure + * + * Mainly used after a return to the D0 (full-power) state from a lower state. + */ +void et131x_tx_dma_enable(struct et131x_adapter *adapter) +{ + /* Setup the transmit dma configuration register for normal + * operation + */ + writel(ET_TXDMA_SNGL_EPKT|(PARM_DMA_CACHE_DEF << ET_TXDMA_CACHE_SHIFT), + &adapter->regs->txdma.csr); +} + +/** + * et131x_init_send - Initialize send data structures + * @adapter: pointer to our private adapter structure + */ +void et131x_init_send(struct et131x_adapter *adapter) +{ + struct tcb *tcb; + u32 ct; + struct tx_ring *tx_ring; + + /* Setup some convenience pointers */ + tx_ring = &adapter->tx_ring; + tcb = adapter->tx_ring.tcb_ring; + + tx_ring->tcb_qhead = tcb; + + memset(tcb, 0, sizeof(struct tcb) * NUM_TCB); + + /* Go through and set up each TCB */ + for (ct = 0; ct++ < NUM_TCB; tcb++) + /* Set the link pointer in HW TCB to the next TCB in the + * chain + */ + tcb->next = tcb + 1; + + /* Set the tail pointer */ + tcb--; + tx_ring->tcb_qtail = tcb; + tcb->next = NULL; + /* Curr send queue should now be empty */ + tx_ring->send_head = NULL; + tx_ring->send_tail = NULL; +} + +/** + * nic_send_packet - NIC specific send handler for version B silicon. + * @adapter: pointer to our adapter + * @tcb: pointer to struct tcb + * + * Returns 0 or errno. + */ +static int nic_send_packet(struct et131x_adapter *adapter, struct tcb *tcb) +{ + u32 i; + struct tx_desc desc[24]; /* 24 x 16 byte */ + u32 frag = 0; + u32 thiscopy, remainder; + struct sk_buff *skb = tcb->skb; + u32 nr_frags = skb_shinfo(skb)->nr_frags + 1; + struct skb_frag_struct *frags = &skb_shinfo(skb)->frags[0]; + unsigned long flags; + struct phy_device *phydev = adapter->phydev; + + /* Part of the optimizations of this send routine restrict us to + * sending 24 fragments at a pass. In practice we should never see + * more than 5 fragments. + * + * NOTE: The older version of this function (below) can handle any + * number of fragments. If needed, we can call this function, + * although it is less efficient. + */ + if (nr_frags > 23) + return -EIO; + + memset(desc, 0, sizeof(struct tx_desc) * (nr_frags + 1)); + + for (i = 0; i < nr_frags; i++) { + /* If there is something in this element, lets get a + * descriptor from the ring and get the necessary data + */ + if (i == 0) { + /* If the fragments are smaller than a standard MTU, + * then map them to a single descriptor in the Tx + * Desc ring. However, if they're larger, as is + * possible with support for jumbo packets, then + * split them each across 2 descriptors. + * + * This will work until we determine why the hardware + * doesn't seem to like large fragments. + */ + if ((skb->len - skb->data_len) <= 1514) { + desc[frag].addr_hi = 0; + /* Low 16bits are length, high is vlan and + unused currently so zero */ + desc[frag].len_vlan = + skb->len - skb->data_len; + + /* NOTE: Here, the dma_addr_t returned from + * pci_map_single() is implicitly cast as a + * u32. Although dma_addr_t can be + * 64-bit, the address returned by + * pci_map_single() is always 32-bit + * addressable (as defined by the pci/dma + * subsystem) + */ + desc[frag++].addr_lo = + pci_map_single(adapter->pdev, + skb->data, + skb->len - + skb->data_len, + PCI_DMA_TODEVICE); + } else { + desc[frag].addr_hi = 0; + desc[frag].len_vlan = + (skb->len - skb->data_len) / 2; + + /* NOTE: Here, the dma_addr_t returned from + * pci_map_single() is implicitly cast as a + * u32. Although dma_addr_t can be + * 64-bit, the address returned by + * pci_map_single() is always 32-bit + * addressable (as defined by the pci/dma + * subsystem) + */ + desc[frag++].addr_lo = + pci_map_single(adapter->pdev, + skb->data, + ((skb->len - + skb->data_len) / 2), + PCI_DMA_TODEVICE); + desc[frag].addr_hi = 0; + + desc[frag].len_vlan = + (skb->len - skb->data_len) / 2; + + /* NOTE: Here, the dma_addr_t returned from + * pci_map_single() is implicitly cast as a + * u32. Although dma_addr_t can be + * 64-bit, the address returned by + * pci_map_single() is always 32-bit + * addressable (as defined by the pci/dma + * subsystem) + */ + desc[frag++].addr_lo = + pci_map_single(adapter->pdev, + skb->data + + ((skb->len - + skb->data_len) / 2), + ((skb->len - + skb->data_len) / 2), + PCI_DMA_TODEVICE); + } + } else { + desc[frag].addr_hi = 0; + desc[frag].len_vlan = + frags[i - 1].size; + + /* NOTE: Here, the dma_addr_t returned from + * pci_map_page() is implicitly cast as a u32. + * Although dma_addr_t can be 64-bit, the address + * returned by pci_map_page() is always 32-bit + * addressable (as defined by the pci/dma subsystem) + */ + desc[frag++].addr_lo = + pci_map_page(adapter->pdev, + frags[i - 1].page, + frags[i - 1].page_offset, + frags[i - 1].size, + PCI_DMA_TODEVICE); + } + } + + if (frag == 0) + return -EIO; + + if (phydev && phydev->speed == SPEED_1000) { + if (++adapter->tx_ring.since_irq == PARM_TX_NUM_BUFS_DEF) { + /* Last element & Interrupt flag */ + desc[frag - 1].flags = 0x5; + adapter->tx_ring.since_irq = 0; + } else { /* Last element */ + desc[frag - 1].flags = 0x1; + } + } else + desc[frag - 1].flags = 0x5; + + desc[0].flags |= 2; /* First element flag */ + + tcb->index_start = adapter->tx_ring.send_idx; + tcb->stale = 0; + + spin_lock_irqsave(&adapter->send_hw_lock, flags); + + thiscopy = NUM_DESC_PER_RING_TX - + INDEX10(adapter->tx_ring.send_idx); + + if (thiscopy >= frag) { + remainder = 0; + thiscopy = frag; + } else { + remainder = frag - thiscopy; + } + + memcpy(adapter->tx_ring.tx_desc_ring + + INDEX10(adapter->tx_ring.send_idx), desc, + sizeof(struct tx_desc) * thiscopy); + + add_10bit(&adapter->tx_ring.send_idx, thiscopy); + + if (INDEX10(adapter->tx_ring.send_idx) == 0 || + INDEX10(adapter->tx_ring.send_idx) == NUM_DESC_PER_RING_TX) { + adapter->tx_ring.send_idx &= ~ET_DMA10_MASK; + adapter->tx_ring.send_idx ^= ET_DMA10_WRAP; + } + + if (remainder) { + memcpy(adapter->tx_ring.tx_desc_ring, + desc + thiscopy, + sizeof(struct tx_desc) * remainder); + + add_10bit(&adapter->tx_ring.send_idx, remainder); + } + + if (INDEX10(adapter->tx_ring.send_idx) == 0) { + if (adapter->tx_ring.send_idx) + tcb->index = NUM_DESC_PER_RING_TX - 1; + else + tcb->index = ET_DMA10_WRAP|(NUM_DESC_PER_RING_TX - 1); + } else + tcb->index = adapter->tx_ring.send_idx - 1; + + spin_lock(&adapter->tcb_send_qlock); + + if (adapter->tx_ring.send_tail) + adapter->tx_ring.send_tail->next = tcb; + else + adapter->tx_ring.send_head = tcb; + + adapter->tx_ring.send_tail = tcb; + + WARN_ON(tcb->next != NULL); + + adapter->tx_ring.used++; + + spin_unlock(&adapter->tcb_send_qlock); + + /* Write the new write pointer back to the device. */ + writel(adapter->tx_ring.send_idx, + &adapter->regs->txdma.service_request); + + /* For Gig only, we use Tx Interrupt coalescing. Enable the software + * timer to wake us up if this packet isn't followed by N more. + */ + if (phydev && phydev->speed == SPEED_1000) { + writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO, + &adapter->regs->global.watchdog_timer); + } + spin_unlock_irqrestore(&adapter->send_hw_lock, flags); + + return 0; +} + +/** + * send_packet - Do the work to send a packet + * @skb: the packet(s) to send + * @adapter: a pointer to the device's private adapter structure + * + * Return 0 in almost all cases; non-zero value in extreme hard failure only. + * + * Assumption: Send spinlock has been acquired + */ +static int send_packet(struct sk_buff *skb, struct et131x_adapter *adapter) +{ + int status; + struct tcb *tcb = NULL; + u16 *shbufva; + unsigned long flags; + + /* All packets must have at least a MAC address and a protocol type */ + if (skb->len < ETH_HLEN) + return -EIO; + + /* Get a TCB for this packet */ + spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); + + tcb = adapter->tx_ring.tcb_qhead; + + if (tcb == NULL) { + spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); + return -ENOMEM; + } + + adapter->tx_ring.tcb_qhead = tcb->next; + + if (adapter->tx_ring.tcb_qhead == NULL) + adapter->tx_ring.tcb_qtail = NULL; + + spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); + + tcb->skb = skb; + + if (skb->data != NULL && skb->len - skb->data_len >= 6) { + shbufva = (u16 *) skb->data; + + if ((shbufva[0] == 0xffff) && + (shbufva[1] == 0xffff) && (shbufva[2] == 0xffff)) { + tcb->flags |= fMP_DEST_BROAD; + } else if ((shbufva[0] & 0x3) == 0x0001) { + tcb->flags |= fMP_DEST_MULTI; + } + } + + tcb->next = NULL; + + /* Call the NIC specific send handler. */ + status = nic_send_packet(adapter, tcb); + + if (status != 0) { + spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); + + if (adapter->tx_ring.tcb_qtail) + adapter->tx_ring.tcb_qtail->next = tcb; + else + /* Apparently ready Q is empty. */ + adapter->tx_ring.tcb_qhead = tcb; + + adapter->tx_ring.tcb_qtail = tcb; + spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); + return status; + } + WARN_ON(adapter->tx_ring.used > NUM_TCB); + return 0; +} + +/** + * et131x_send_packets - This function is called by the OS to send packets + * @skb: the packet(s) to send + * @netdev:device on which to TX the above packet(s) + * + * Return 0 in almost all cases; non-zero value in extreme hard failure only + */ +int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev) +{ + int status = 0; + struct et131x_adapter *adapter = NULL; + + adapter = netdev_priv(netdev); + + /* Send these packets + * + * NOTE: The Linux Tx entry point is only given one packet at a time + * to Tx, so the PacketCount and it's array used makes no sense here + */ + + /* TCB is not available */ + if (adapter->tx_ring.used >= NUM_TCB) { + /* NOTE: If there's an error on send, no need to queue the + * packet under Linux; if we just send an error up to the + * netif layer, it will resend the skb to us. + */ + status = -ENOMEM; + } else { + /* We need to see if the link is up; if it's not, make the + * netif layer think we're good and drop the packet + */ + if ((adapter->flags & fMP_ADAPTER_FAIL_SEND_MASK) || + !netif_carrier_ok(netdev)) { + dev_kfree_skb_any(skb); + skb = NULL; + + adapter->net_stats.tx_dropped++; + } else { + status = send_packet(skb, adapter); + if (status != 0 && status != -ENOMEM) { + /* On any other error, make netif think we're + * OK and drop the packet + */ + dev_kfree_skb_any(skb); + skb = NULL; + adapter->net_stats.tx_dropped++; + } + } + } + return status; +} + +/** + * free_send_packet - Recycle a struct tcb + * @adapter: pointer to our adapter + * @tcb: pointer to struct tcb + * + * Complete the packet if necessary + * Assumption - Send spinlock has been acquired + */ +static inline void free_send_packet(struct et131x_adapter *adapter, + struct tcb *tcb) +{ + unsigned long flags; + struct tx_desc *desc = NULL; + struct net_device_stats *stats = &adapter->net_stats; + + if (tcb->flags & fMP_DEST_BROAD) + atomic_inc(&adapter->stats.broadcast_pkts_xmtd); + else if (tcb->flags & fMP_DEST_MULTI) + atomic_inc(&adapter->stats.multicast_pkts_xmtd); + else + atomic_inc(&adapter->stats.unicast_pkts_xmtd); + + if (tcb->skb) { + stats->tx_bytes += tcb->skb->len; + + /* Iterate through the TX descriptors on the ring + * corresponding to this packet and umap the fragments + * they point to + */ + do { + desc = (struct tx_desc *) + (adapter->tx_ring.tx_desc_ring + + INDEX10(tcb->index_start)); + + pci_unmap_single(adapter->pdev, + desc->addr_lo, + desc->len_vlan, PCI_DMA_TODEVICE); + + add_10bit(&tcb->index_start, 1); + if (INDEX10(tcb->index_start) >= + NUM_DESC_PER_RING_TX) { + tcb->index_start &= ~ET_DMA10_MASK; + tcb->index_start ^= ET_DMA10_WRAP; + } + } while (desc != (adapter->tx_ring.tx_desc_ring + + INDEX10(tcb->index))); + + dev_kfree_skb_any(tcb->skb); + } + + memset(tcb, 0, sizeof(struct tcb)); + + /* Add the TCB to the Ready Q */ + spin_lock_irqsave(&adapter->tcb_ready_qlock, flags); + + adapter->net_stats.tx_packets++; + + if (adapter->tx_ring.tcb_qtail) + adapter->tx_ring.tcb_qtail->next = tcb; + else + /* Apparently ready Q is empty. */ + adapter->tx_ring.tcb_qhead = tcb; + + adapter->tx_ring.tcb_qtail = tcb; + + spin_unlock_irqrestore(&adapter->tcb_ready_qlock, flags); + WARN_ON(adapter->tx_ring.used < 0); +} + +/** + * et131x_free_busy_send_packets - Free and complete the stopped active sends + * @adapter: pointer to our adapter + * + * Assumption - Send spinlock has been acquired + */ +void et131x_free_busy_send_packets(struct et131x_adapter *adapter) +{ + struct tcb *tcb; + unsigned long flags; + u32 freed = 0; + + /* Any packets being sent? Check the first TCB on the send list */ + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + tcb = adapter->tx_ring.send_head; + + while (tcb != NULL && freed < NUM_TCB) { + struct tcb *next = tcb->next; + + adapter->tx_ring.send_head = next; + + if (next == NULL) + adapter->tx_ring.send_tail = NULL; + + adapter->tx_ring.used--; + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); + + freed++; + free_send_packet(adapter, tcb); + + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + tcb = adapter->tx_ring.send_head; + } + + WARN_ON(freed == NUM_TCB); + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); + + adapter->tx_ring.used = 0; +} + +/** + * et131x_handle_send_interrupt - Interrupt handler for sending processing + * @adapter: pointer to our adapter + * + * Re-claim the send resources, complete sends and get more to send from + * the send wait queue. + * + * Assumption - Send spinlock has been acquired + */ +void et131x_handle_send_interrupt(struct et131x_adapter *adapter) +{ + unsigned long flags; + u32 serviced; + struct tcb *tcb; + u32 index; + + serviced = readl(&adapter->regs->txdma.new_service_complete); + index = INDEX10(serviced); + + /* Has the ring wrapped? Process any descriptors that do not have + * the same "wrap" indicator as the current completion indicator + */ + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + tcb = adapter->tx_ring.send_head; + + while (tcb && + ((serviced ^ tcb->index) & ET_DMA10_WRAP) && + index < INDEX10(tcb->index)) { + adapter->tx_ring.used--; + adapter->tx_ring.send_head = tcb->next; + if (tcb->next == NULL) + adapter->tx_ring.send_tail = NULL; + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); + free_send_packet(adapter, tcb); + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + /* Goto the next packet */ + tcb = adapter->tx_ring.send_head; + } + while (tcb && + !((serviced ^ tcb->index) & ET_DMA10_WRAP) + && index > (tcb->index & ET_DMA10_MASK)) { + adapter->tx_ring.used--; + adapter->tx_ring.send_head = tcb->next; + if (tcb->next == NULL) + adapter->tx_ring.send_tail = NULL; + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); + free_send_packet(adapter, tcb); + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + /* Goto the next packet */ + tcb = adapter->tx_ring.send_head; + } + + /* Wake up the queue when we hit a low-water mark */ + if (adapter->tx_ring.used <= NUM_TCB / 3) + netif_wake_queue(adapter->netdev); + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); +} + +/* ETHTOOL functions */ + +static int et131x_get_settings(struct net_device *netdev, + struct ethtool_cmd *cmd) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + return phy_ethtool_gset(adapter->phydev, cmd); +} + +static int et131x_set_settings(struct net_device *netdev, + struct ethtool_cmd *cmd) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + return phy_ethtool_sset(adapter->phydev, cmd); +} + +static int et131x_get_regs_len(struct net_device *netdev) +{ +#define ET131X_REGS_LEN 256 + return ET131X_REGS_LEN * sizeof(u32); +} + +static void et131x_get_regs(struct net_device *netdev, + struct ethtool_regs *regs, void *regs_data) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + struct address_map __iomem *aregs = adapter->regs; + u32 *regs_buff = regs_data; + u32 num = 0; + + memset(regs_data, 0, et131x_get_regs_len(netdev)); + + regs->version = (1 << 24) | (adapter->pdev->revision << 16) | + adapter->pdev->device; + + /* PHY regs */ + et131x_mii_read(adapter, MII_BMCR, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_BMSR, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_PHYSID1, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_PHYSID2, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_ADVERTISE, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_LPA, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_EXPANSION, (u16 *)®s_buff[num++]); + /* Autoneg next page transmit reg */ + et131x_mii_read(adapter, 0x07, (u16 *)®s_buff[num++]); + /* Link partner next page reg */ + et131x_mii_read(adapter, 0x08, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_CTRL1000, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_STAT1000, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, MII_ESTATUS, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_INDEX_REG, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_DATA_REG, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, + (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL, + (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL+1, + (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL, + (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_CONFIG, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_PHY_CONTROL, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_INTERRUPT_MASK, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, + (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_PHY_STATUS, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_LED_1, (u16 *)®s_buff[num++]); + et131x_mii_read(adapter, PHY_LED_2, (u16 *)®s_buff[num++]); + + /* Global regs */ + regs_buff[num++] = readl(&aregs->global.txq_start_addr); + regs_buff[num++] = readl(&aregs->global.txq_end_addr); + regs_buff[num++] = readl(&aregs->global.rxq_start_addr); + regs_buff[num++] = readl(&aregs->global.rxq_end_addr); + regs_buff[num++] = readl(&aregs->global.pm_csr); + regs_buff[num++] = adapter->stats.interrupt_status; + regs_buff[num++] = readl(&aregs->global.int_mask); + regs_buff[num++] = readl(&aregs->global.int_alias_clr_en); + regs_buff[num++] = readl(&aregs->global.int_status_alias); + regs_buff[num++] = readl(&aregs->global.sw_reset); + regs_buff[num++] = readl(&aregs->global.slv_timer); + regs_buff[num++] = readl(&aregs->global.msi_config); + regs_buff[num++] = readl(&aregs->global.loopback); + regs_buff[num++] = readl(&aregs->global.watchdog_timer); + + /* TXDMA regs */ + regs_buff[num++] = readl(&aregs->txdma.csr); + regs_buff[num++] = readl(&aregs->txdma.pr_base_hi); + regs_buff[num++] = readl(&aregs->txdma.pr_base_lo); + regs_buff[num++] = readl(&aregs->txdma.pr_num_des); + regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr); + regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr_ext); + regs_buff[num++] = readl(&aregs->txdma.txq_rd_addr); + regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_hi); + regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_lo); + regs_buff[num++] = readl(&aregs->txdma.service_request); + regs_buff[num++] = readl(&aregs->txdma.service_complete); + regs_buff[num++] = readl(&aregs->txdma.cache_rd_index); + regs_buff[num++] = readl(&aregs->txdma.cache_wr_index); + regs_buff[num++] = readl(&aregs->txdma.tx_dma_error); + regs_buff[num++] = readl(&aregs->txdma.desc_abort_cnt); + regs_buff[num++] = readl(&aregs->txdma.payload_abort_cnt); + regs_buff[num++] = readl(&aregs->txdma.writeback_abort_cnt); + regs_buff[num++] = readl(&aregs->txdma.desc_timeout_cnt); + regs_buff[num++] = readl(&aregs->txdma.payload_timeout_cnt); + regs_buff[num++] = readl(&aregs->txdma.writeback_timeout_cnt); + regs_buff[num++] = readl(&aregs->txdma.desc_error_cnt); + regs_buff[num++] = readl(&aregs->txdma.payload_error_cnt); + regs_buff[num++] = readl(&aregs->txdma.writeback_error_cnt); + regs_buff[num++] = readl(&aregs->txdma.dropped_tlp_cnt); + regs_buff[num++] = readl(&aregs->txdma.new_service_complete); + regs_buff[num++] = readl(&aregs->txdma.ethernet_packet_cnt); + + /* RXDMA regs */ + regs_buff[num++] = readl(&aregs->rxdma.csr); + regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_hi); + regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_lo); + regs_buff[num++] = readl(&aregs->rxdma.num_pkt_done); + regs_buff[num++] = readl(&aregs->rxdma.max_pkt_time); + regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr); + regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr_ext); + regs_buff[num++] = readl(&aregs->rxdma.rxq_wr_addr); + regs_buff[num++] = readl(&aregs->rxdma.psr_base_hi); + regs_buff[num++] = readl(&aregs->rxdma.psr_base_lo); + regs_buff[num++] = readl(&aregs->rxdma.psr_num_des); + regs_buff[num++] = readl(&aregs->rxdma.psr_avail_offset); + regs_buff[num++] = readl(&aregs->rxdma.psr_full_offset); + regs_buff[num++] = readl(&aregs->rxdma.psr_access_index); + regs_buff[num++] = readl(&aregs->rxdma.psr_min_des); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_lo); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_hi); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_num_des); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_avail_offset); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_full_offset); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_rd_index); + regs_buff[num++] = readl(&aregs->rxdma.fbr0_min_des); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_lo); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_hi); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_num_des); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_avail_offset); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_full_offset); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_rd_index); + regs_buff[num++] = readl(&aregs->rxdma.fbr1_min_des); +} + +#define ET131X_DRVINFO_LEN 32 /* value from ethtool.h */ +static void et131x_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *info) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + strncpy(info->driver, DRIVER_NAME, ET131X_DRVINFO_LEN); + strncpy(info->version, DRIVER_VERSION, ET131X_DRVINFO_LEN); + strncpy(info->bus_info, pci_name(adapter->pdev), ET131X_DRVINFO_LEN); +} + +static struct ethtool_ops et131x_ethtool_ops = { + .get_settings = et131x_get_settings, + .set_settings = et131x_set_settings, + .get_drvinfo = et131x_get_drvinfo, + .get_regs_len = et131x_get_regs_len, + .get_regs = et131x_get_regs, + .get_link = ethtool_op_get_link, +}; + +void et131x_set_ethtool_ops(struct net_device *netdev) +{ + SET_ETHTOOL_OPS(netdev, &et131x_ethtool_ops); +} + +/* PCI functions */ + +/** + * et131x_hwaddr_init - set up the MAC Address on the ET1310 + * @adapter: pointer to our private adapter structure + */ +void et131x_hwaddr_init(struct et131x_adapter *adapter) +{ + /* If have our default mac from init and no mac address from + * EEPROM then we need to generate the last octet and set it on the + * device + */ + if (adapter->rom_addr[0] == 0x00 && + adapter->rom_addr[1] == 0x00 && + adapter->rom_addr[2] == 0x00 && + adapter->rom_addr[3] == 0x00 && + adapter->rom_addr[4] == 0x00 && + adapter->rom_addr[5] == 0x00) { + /* + * We need to randomly generate the last octet so we + * decrease our chances of setting the mac address to + * same as another one of our cards in the system + */ + get_random_bytes(&adapter->addr[5], 1); + /* + * We have the default value in the register we are + * working with so we need to copy the current + * address into the permanent address + */ + memcpy(adapter->rom_addr, + adapter->addr, ETH_ALEN); + } else { + /* We do not have an override address, so set the + * current address to the permanent address and add + * it to the device + */ + memcpy(adapter->addr, + adapter->rom_addr, ETH_ALEN); + } +} + +/** + * et131x_pci_init - initial PCI setup + * @adapter: pointer to our private adapter structure + * @pdev: our PCI device + * + * Perform the initial setup of PCI registers and if possible initialise + * the MAC address. At this point the I/O registers have yet to be mapped + */ +static int et131x_pci_init(struct et131x_adapter *adapter, + struct pci_dev *pdev) +{ + int i; + u8 max_payload; + u8 read_size_reg; + + if (et131x_init_eeprom(adapter) < 0) + return -EIO; + + /* Let's set up the PORT LOGIC Register. First we need to know what + * the max_payload_size is + */ + if (pci_read_config_byte(pdev, ET1310_PCI_MAX_PYLD, &max_payload)) { + dev_err(&pdev->dev, + "Could not read PCI config space for Max Payload Size\n"); + return -EIO; + } + + /* Program the Ack/Nak latency and replay timers */ + max_payload &= 0x07; /* Only the lower 3 bits are valid */ + + if (max_payload < 2) { + static const u16 acknak[2] = { 0x76, 0xD0 }; + static const u16 replay[2] = { 0x1E0, 0x2ED }; + + if (pci_write_config_word(pdev, ET1310_PCI_ACK_NACK, + acknak[max_payload])) { + dev_err(&pdev->dev, + "Could not write PCI config space for ACK/NAK\n"); + return -EIO; + } + if (pci_write_config_word(pdev, ET1310_PCI_REPLAY, + replay[max_payload])) { + dev_err(&pdev->dev, + "Could not write PCI config space for Replay Timer\n"); + return -EIO; + } + } + + /* l0s and l1 latency timers. We are using default values. + * Representing 001 for L0s and 010 for L1 + */ + if (pci_write_config_byte(pdev, ET1310_PCI_L0L1LATENCY, 0x11)) { + dev_err(&pdev->dev, + "Could not write PCI config space for Latency Timers\n"); + return -EIO; + } + + /* Change the max read size to 2k */ + if (pci_read_config_byte(pdev, 0x51, &read_size_reg)) { + dev_err(&pdev->dev, + "Could not read PCI config space for Max read size\n"); + return -EIO; + } + + read_size_reg &= 0x8f; + read_size_reg |= 0x40; + + if (pci_write_config_byte(pdev, 0x51, read_size_reg)) { + dev_err(&pdev->dev, + "Could not write PCI config space for Max read size\n"); + return -EIO; + } + + /* Get MAC address from config space if an eeprom exists, otherwise + * the MAC address there will not be valid + */ + if (!adapter->has_eeprom) { + et131x_hwaddr_init(adapter); + return 0; + } + + for (i = 0; i < ETH_ALEN; i++) { + if (pci_read_config_byte(pdev, ET1310_PCI_MAC_ADDRESS + i, + adapter->rom_addr + i)) { + dev_err(&pdev->dev, "Could not read PCI config space for MAC address\n"); + return -EIO; + } + } + memcpy(adapter->addr, adapter->rom_addr, ETH_ALEN); + return 0; +} + +/** + * et131x_error_timer_handler + * @data: timer-specific variable; here a pointer to our adapter structure + * + * The routine called when the error timer expires, to track the number of + * recurring errors. + */ +void et131x_error_timer_handler(unsigned long data) +{ + struct et131x_adapter *adapter = (struct et131x_adapter *) data; + struct phy_device *phydev = adapter->phydev; + + if (et1310_in_phy_coma(adapter)) { + /* Bring the device immediately out of coma, to + * prevent it from sleeping indefinitely, this + * mechanism could be improved! */ + et1310_disable_phy_coma(adapter); + adapter->boot_coma = 20; + } else { + et1310_update_macstat_host_counters(adapter); + } + + if (!phydev->link && adapter->boot_coma < 11) + adapter->boot_coma++; + + if (adapter->boot_coma == 10) { + if (!phydev->link) { + if (!et1310_in_phy_coma(adapter)) { + /* NOTE - This was originally a 'sync with + * interrupt'. How to do that under Linux? + */ + et131x_enable_interrupts(adapter); + et1310_enable_phy_coma(adapter); + } + } + } + + /* This is a periodic timer, so reschedule */ + mod_timer(&adapter->error_timer, jiffies + + TX_ERROR_PERIOD * HZ / 1000); +} + +/** + * et131x_configure_global_regs - configure JAGCore global regs + * @adapter: pointer to our adapter structure + * + * Used to configure the global registers on the JAGCore + */ +void et131x_configure_global_regs(struct et131x_adapter *adapter) +{ + struct global_regs __iomem *regs = &adapter->regs->global; + + writel(0, ®s->rxq_start_addr); + writel(INTERNAL_MEM_SIZE - 1, ®s->txq_end_addr); + + if (adapter->registry_jumbo_packet < 2048) { + /* Tx / RxDMA and Tx/Rx MAC interfaces have a 1k word + * block of RAM that the driver can split between Tx + * and Rx as it desires. Our default is to split it + * 50/50: + */ + writel(PARM_RX_MEM_END_DEF, ®s->rxq_end_addr); + writel(PARM_RX_MEM_END_DEF + 1, ®s->txq_start_addr); + } else if (adapter->registry_jumbo_packet < 8192) { + /* For jumbo packets > 2k but < 8k, split 50-50. */ + writel(INTERNAL_MEM_RX_OFFSET, ®s->rxq_end_addr); + writel(INTERNAL_MEM_RX_OFFSET + 1, ®s->txq_start_addr); + } else { + /* 9216 is the only packet size greater than 8k that + * is available. The Tx buffer has to be big enough + * for one whole packet on the Tx side. We'll make + * the Tx 9408, and give the rest to Rx + */ + writel(0x01b3, ®s->rxq_end_addr); + writel(0x01b4, ®s->txq_start_addr); + } + + /* Initialize the loopback register. Disable all loopbacks. */ + writel(0, ®s->loopback); + + /* MSI Register */ + writel(0, ®s->msi_config); + + /* By default, disable the watchdog timer. It will be enabled when + * a packet is queued. + */ + writel(0, ®s->watchdog_timer); +} + +/** + * et131x_adapter_setup - Set the adapter up as per cassini+ documentation + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +void et131x_adapter_setup(struct et131x_adapter *adapter) +{ + /* Configure the JAGCore */ + et131x_configure_global_regs(adapter); + + et1310_config_mac_regs1(adapter); + + /* Configure the MMC registers */ + /* All we need to do is initialize the Memory Control Register */ + writel(ET_MMC_ENABLE, &adapter->regs->mmc.mmc_ctrl); + + et1310_config_rxmac_regs(adapter); + et1310_config_txmac_regs(adapter); + + et131x_config_rx_dma_regs(adapter); + et131x_config_tx_dma_regs(adapter); + + et1310_config_macstat_regs(adapter); + + et1310_phy_power_down(adapter, 0); + et131x_xcvr_init(adapter); +} + +/** + * et131x_soft_reset - Issue a soft reset to the hardware, complete for ET1310 + * @adapter: pointer to our private adapter structure + */ +void et131x_soft_reset(struct et131x_adapter *adapter) +{ + /* Disable MAC Core */ + writel(0xc00f0000, &adapter->regs->mac.cfg1); + + /* Set everything to a reset value */ + writel(0x7F, &adapter->regs->global.sw_reset); + writel(0x000f0000, &adapter->regs->mac.cfg1); + writel(0x00000000, &adapter->regs->mac.cfg1); +} + +/** + * et131x_align_allocated_memory - Align allocated memory on a given boundary + * @adapter: pointer to our adapter structure + * @phys_addr: pointer to Physical address + * @offset: pointer to the offset variable + * @mask: correct mask + */ +void et131x_align_allocated_memory(struct et131x_adapter *adapter, + uint64_t *phys_addr, + uint64_t *offset, uint64_t mask) +{ + uint64_t new_addr; + + *offset = 0; + + new_addr = *phys_addr & ~mask; + + if (new_addr != *phys_addr) { + /* Move to next aligned block */ + new_addr += mask + 1; + /* Return offset for adjusting virt addr */ + *offset = new_addr - *phys_addr; + /* Return new physical address */ + *phys_addr = new_addr; + } +} + +/** + * et131x_adapter_memory_alloc + * @adapter: pointer to our private adapter structure + * + * Returns 0 on success, errno on failure (as defined in errno.h). + * + * Allocate all the memory blocks for send, receive and others. + */ +int et131x_adapter_memory_alloc(struct et131x_adapter *adapter) +{ + int status; + + /* Allocate memory for the Tx Ring */ + status = et131x_tx_dma_memory_alloc(adapter); + if (status != 0) { + dev_err(&adapter->pdev->dev, + "et131x_tx_dma_memory_alloc FAILED\n"); + return status; + } + /* Receive buffer memory allocation */ + status = et131x_rx_dma_memory_alloc(adapter); + if (status != 0) { + dev_err(&adapter->pdev->dev, + "et131x_rx_dma_memory_alloc FAILED\n"); + et131x_tx_dma_memory_free(adapter); + return status; + } + + /* Init receive data structures */ + status = et131x_init_recv(adapter); + if (status != 0) { + dev_err(&adapter->pdev->dev, + "et131x_init_recv FAILED\n"); + et131x_tx_dma_memory_free(adapter); + et131x_rx_dma_memory_free(adapter); + } + return status; +} + +/** + * et131x_adapter_memory_free - Free all memory allocated for use by Tx & Rx + * @adapter: pointer to our private adapter structure + */ +void et131x_adapter_memory_free(struct et131x_adapter *adapter) +{ + /* Free DMA memory */ + et131x_tx_dma_memory_free(adapter); + et131x_rx_dma_memory_free(adapter); +} + +static void et131x_adjust_link(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = adapter->phydev; + + if (netif_carrier_ok(netdev)) { + adapter->boot_coma = 20; + + if (phydev && phydev->speed == SPEED_10) { + /* + * NOTE - Is there a way to query this without + * TruePHY? + * && TRU_QueryCoreType(adapter->hTruePhy, 0)== + * EMI_TRUEPHY_A13O) { + */ + u16 register18; + + et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, + ®ister18); + et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, + register18 | 0x4); + et131x_mii_write(adapter, PHY_INDEX_REG, + register18 | 0x8402); + et131x_mii_write(adapter, PHY_DATA_REG, + register18 | 511); + et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, + register18); + } + + et1310_config_flow_control(adapter); + + if (phydev && phydev->speed == SPEED_1000 && + adapter->registry_jumbo_packet > 2048) { + u16 reg; + + et131x_mii_read(adapter, PHY_CONFIG, ®); + reg &= ~ET_PHY_CONFIG_TX_FIFO_DEPTH; + reg |= ET_PHY_CONFIG_FIFO_DEPTH_32; + et131x_mii_write(adapter, PHY_CONFIG, reg); + } + + et131x_set_rx_dma_timer(adapter); + et1310_config_mac_regs2(adapter); + } + + if (phydev && phydev->link != adapter->link) { + /* + * Check to see if we are in coma mode and if + * so, disable it because we will not be able + * to read PHY values until we are out. + */ + if (et1310_in_phy_coma(adapter)) + et1310_disable_phy_coma(adapter); + + if (phydev->link) { + adapter->boot_coma = 20; + } else { + dev_warn(&adapter->pdev->dev, + "Link down - cable problem ?\n"); + adapter->boot_coma = 0; + + if (phydev->speed == SPEED_10) { + /* NOTE - Is there a way to query this without + * TruePHY? + * && TRU_QueryCoreType(adapter->hTruePhy, 0) == + * EMI_TRUEPHY_A13O) + */ + u16 register18; + + et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, + ®ister18); + et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, + register18 | 0x4); + et131x_mii_write(adapter, PHY_INDEX_REG, + register18 | 0x8402); + et131x_mii_write(adapter, PHY_DATA_REG, + register18 | 511); + et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, + register18); + } + + /* Free the packets being actively sent & stopped */ + et131x_free_busy_send_packets(adapter); + + /* Re-initialize the send structures */ + et131x_init_send(adapter); + + /* Reset the RFD list and re-start RU */ + et131x_reset_recv(adapter); + + /* + * Bring the device back to the state it was during + * init prior to autonegotiation being complete. This + * way, when we get the auto-neg complete interrupt, + * we can complete init by calling config_mac_regs2. + */ + et131x_soft_reset(adapter); + + /* Setup ET1310 as per the documentation */ + et131x_adapter_setup(adapter); + + /* perform reset of tx/rx */ + et131x_disable_txrx(netdev); + et131x_enable_txrx(netdev); + } + + adapter->link = phydev->link; + + phy_print_status(phydev); + } +} + +static int et131x_mii_probe(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = NULL; + + phydev = phy_find_first(adapter->mii_bus); + if (!phydev) { + dev_err(&adapter->pdev->dev, "no PHY found\n"); + return -ENODEV; + } + + phydev = phy_connect(netdev, dev_name(&phydev->dev), + &et131x_adjust_link, 0, PHY_INTERFACE_MODE_MII); + + if (IS_ERR(phydev)) { + dev_err(&adapter->pdev->dev, "Could not attach to PHY\n"); + return PTR_ERR(phydev); + } + + phydev->supported &= (SUPPORTED_10baseT_Half + | SUPPORTED_10baseT_Full + | SUPPORTED_100baseT_Half + | SUPPORTED_100baseT_Full + | SUPPORTED_Autoneg + | SUPPORTED_MII + | SUPPORTED_TP); + + if (adapter->pdev->device != ET131X_PCI_DEVICE_ID_FAST) + phydev->supported |= SUPPORTED_1000baseT_Full; + + phydev->advertising = phydev->supported; + adapter->phydev = phydev; + + dev_info(&adapter->pdev->dev, "attached PHY driver [%s] " + "(mii_bus:phy_addr=%s)\n", + phydev->drv->name, dev_name(&phydev->dev)); + + return 0; +} + +/** + * et131x_adapter_init + * @adapter: pointer to the private adapter struct + * @pdev: pointer to the PCI device + * + * Initialize the data structures for the et131x_adapter object and link + * them together with the platform provided device structures. + */ +static struct et131x_adapter *et131x_adapter_init(struct net_device *netdev, + struct pci_dev *pdev) +{ + static const u8 default_mac[] = { 0x00, 0x05, 0x3d, 0x00, 0x02, 0x00 }; + + struct et131x_adapter *adapter; + + /* Allocate private adapter struct and copy in relevant information */ + adapter = netdev_priv(netdev); + adapter->pdev = pci_dev_get(pdev); + adapter->netdev = netdev; + + /* Do the same for the netdev struct */ + netdev->irq = pdev->irq; + netdev->base_addr = pci_resource_start(pdev, 0); + + /* Initialize spinlocks here */ + spin_lock_init(&adapter->lock); + spin_lock_init(&adapter->tcb_send_qlock); + spin_lock_init(&adapter->tcb_ready_qlock); + spin_lock_init(&adapter->send_hw_lock); + spin_lock_init(&adapter->rcv_lock); + spin_lock_init(&adapter->rcv_pend_lock); + spin_lock_init(&adapter->fbr_lock); + spin_lock_init(&adapter->phy_lock); + + adapter->registry_jumbo_packet = 1514; /* 1514-9216 */ + + /* Set the MAC address to a default */ + memcpy(adapter->addr, default_mac, ETH_ALEN); + + return adapter; +} + +/** + * et131x_pci_setup - Perform device initialization + * @pdev: a pointer to the device's pci_dev structure + * @ent: this device's entry in the pci_device_id table + * + * Returns 0 on success, errno on failure (as defined in errno.h) + * + * Registered in the pci_driver structure, this function is called when the + * PCI subsystem finds a new PCI device which matches the information + * contained in the pci_device_id table. This routine is the equivalent to + * a device insertion routine. + */ +static int __devinit et131x_pci_setup(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + int result; + int pm_cap; + struct net_device *netdev; + struct et131x_adapter *adapter; + int ii; + + result = pci_enable_device(pdev); + if (result) { + dev_err(&pdev->dev, "pci_enable_device() failed\n"); + goto err_out; + } + + /* Perform some basic PCI checks */ + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { + dev_err(&pdev->dev, "Can't find PCI device's base address\n"); + goto err_disable; + } + + if (pci_request_regions(pdev, DRIVER_NAME)) { + dev_err(&pdev->dev, "Can't get PCI resources\n"); + goto err_disable; + } + + pci_set_master(pdev); + + /* Query PCI for Power Mgmt Capabilities + * + * NOTE: Now reading PowerMgmt in another location; is this still + * needed? + */ + pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM); + if (!pm_cap) { + dev_err(&pdev->dev, + "Cannot find Power Management capabilities\n"); + result = -EIO; + goto err_release_res; + } + + /* Check the DMA addressing support of this device */ + if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { + result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); + if (result) { + dev_err(&pdev->dev, + "Unable to obtain 64 bit DMA for consistent allocations\n"); + goto err_release_res; + } + } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { + result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + if (result) { + dev_err(&pdev->dev, + "Unable to obtain 32 bit DMA for consistent allocations\n"); + goto err_release_res; + } + } else { + dev_err(&pdev->dev, "No usable DMA addressing method\n"); + result = -EIO; + goto err_release_res; + } + + /* Allocate netdev and private adapter structs */ + netdev = et131x_device_alloc(); + if (!netdev) { + dev_err(&pdev->dev, "Couldn't alloc netdev struct\n"); + result = -ENOMEM; + goto err_release_res; + } + + SET_NETDEV_DEV(netdev, &pdev->dev); + et131x_set_ethtool_ops(netdev); + + adapter = et131x_adapter_init(netdev, pdev); + + /* Initialise the PCI setup for the device */ + et131x_pci_init(adapter, pdev); + + /* Map the bus-relative registers to system virtual memory */ + adapter->regs = pci_ioremap_bar(pdev, 0); + if (!adapter->regs) { + dev_err(&pdev->dev, "Cannot map device registers\n"); + result = -ENOMEM; + goto err_free_dev; + } + + /* If Phy COMA mode was enabled when we went down, disable it here. */ + writel(ET_PMCSR_INIT, &adapter->regs->global.pm_csr); + + /* Issue a global reset to the et1310 */ + et131x_soft_reset(adapter); + + /* Disable all interrupts (paranoid) */ + et131x_disable_interrupts(adapter); + + /* Allocate DMA memory */ + result = et131x_adapter_memory_alloc(adapter); + if (result) { + dev_err(&pdev->dev, "Could not alloc adapater memory (DMA)\n"); + goto err_iounmap; + } + + /* Init send data structures */ + et131x_init_send(adapter); + + /* Set up the task structure for the ISR's deferred handler */ + INIT_WORK(&adapter->task, et131x_isr_handler); + + /* Copy address into the net_device struct */ + memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN); + + /* Init variable for counting how long we do not have link status */ + adapter->boot_coma = 0; + et1310_disable_phy_coma(adapter); + + /* Setup the mii_bus struct */ + adapter->mii_bus = mdiobus_alloc(); + if (!adapter->mii_bus) { + dev_err(&pdev->dev, "Alloc of mii_bus struct failed\n"); + goto err_mem_free; + } + + adapter->mii_bus->name = "et131x_eth_mii"; + snprintf(adapter->mii_bus->id, MII_BUS_ID_SIZE, "%x", + (adapter->pdev->bus->number << 8) | adapter->pdev->devfn); + adapter->mii_bus->priv = netdev; + adapter->mii_bus->read = et131x_mdio_read; + adapter->mii_bus->write = et131x_mdio_write; + adapter->mii_bus->reset = et131x_mdio_reset; + adapter->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); + if (!adapter->mii_bus->irq) { + dev_err(&pdev->dev, "mii_bus irq allocation failed\n"); + goto err_mdio_free; + } + + for (ii = 0; ii < PHY_MAX_ADDR; ii++) + adapter->mii_bus->irq[ii] = PHY_POLL; + + if (mdiobus_register(adapter->mii_bus)) { + dev_err(&pdev->dev, "failed to register MII bus\n"); + mdiobus_free(adapter->mii_bus); + goto err_mdio_free_irq; + } + + if (et131x_mii_probe(netdev)) { + dev_err(&pdev->dev, "failed to probe MII bus\n"); + goto err_mdio_unregister; + } + + /* Setup et1310 as per the documentation */ + et131x_adapter_setup(adapter); + + /* We can enable interrupts now + * + * NOTE - Because registration of interrupt handler is done in the + * device's open(), defer enabling device interrupts to that + * point + */ + + /* Register the net_device struct with the Linux network layer */ + result = register_netdev(netdev); + if (result != 0) { + dev_err(&pdev->dev, "register_netdev() failed\n"); + goto err_mdio_unregister; + } + + /* Register the net_device struct with the PCI subsystem. Save a copy + * of the PCI config space for this device now that the device has + * been initialized, just in case it needs to be quickly restored. + */ + pci_set_drvdata(pdev, netdev); + pci_save_state(adapter->pdev); + + return result; + +err_mdio_unregister: + mdiobus_unregister(adapter->mii_bus); +err_mdio_free_irq: + kfree(adapter->mii_bus->irq); +err_mdio_free: + mdiobus_free(adapter->mii_bus); +err_mem_free: + et131x_adapter_memory_free(adapter); +err_iounmap: + iounmap(adapter->regs); +err_free_dev: + pci_dev_put(pdev); + free_netdev(netdev); +err_release_res: + pci_release_regions(pdev); +err_disable: + pci_disable_device(pdev); +err_out: + return result; +} + +/** + * et131x_pci_remove + * @pdev: a pointer to the device's pci_dev structure + * + * Registered in the pci_driver structure, this function is called when the + * PCI subsystem detects that a PCI device which matches the information + * contained in the pci_device_id table has been removed. + */ +static void __devexit et131x_pci_remove(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct et131x_adapter *adapter = netdev_priv(netdev); + + unregister_netdev(netdev); + mdiobus_unregister(adapter->mii_bus); + kfree(adapter->mii_bus->irq); + mdiobus_free(adapter->mii_bus); + + et131x_adapter_memory_free(adapter); + iounmap(adapter->regs); + pci_dev_put(pdev); + + free_netdev(netdev); + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +#ifdef CONFIG_PM_SLEEP +static int et131x_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + + if (netif_running(netdev)) { + netif_device_detach(netdev); + et131x_down(netdev); + pci_save_state(pdev); + } + + return 0; +} + +static int et131x_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct net_device *netdev = pci_get_drvdata(pdev); + + if (netif_running(netdev)) { + pci_restore_state(pdev); + et131x_up(netdev); + netif_device_attach(netdev); + } + + return 0; +} + +static SIMPLE_DEV_PM_OPS(et131x_pm_ops, et131x_suspend, et131x_resume); +#define ET131X_PM_OPS (&et131x_pm_ops) +#else +#define ET131X_PM_OPS NULL +#endif + +static struct pci_device_id et131x_pci_table[] __devinitdata = { + {ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_GIG, PCI_ANY_ID, + PCI_ANY_ID, 0, 0, 0UL}, + {ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_FAST, PCI_ANY_ID, + PCI_ANY_ID, 0, 0, 0UL}, + {0,} +}; + +MODULE_DEVICE_TABLE(pci, et131x_pci_table); + +static struct pci_driver et131x_driver = { + .name = DRIVER_NAME, + .id_table = et131x_pci_table, + .probe = et131x_pci_setup, + .remove = __devexit_p(et131x_pci_remove), + .driver.pm = ET131X_PM_OPS, +}; + +/** + * et131x_init_module - The "main" entry point called on driver initialization + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +static int __init et131x_init_module(void) +{ + return pci_register_driver(&et131x_driver); +} + +/** + * et131x_cleanup_module - The entry point called on driver cleanup + */ +static void __exit et131x_cleanup_module(void) +{ + pci_unregister_driver(&et131x_driver); +} + +module_init(et131x_init_module); +module_exit(et131x_cleanup_module); + +/* ISR functions */ + +/** + * et131x_enable_interrupts - enable interrupt + * @adapter: et131x device + * + * Enable the appropriate interrupts on the ET131x according to our + * configuration + */ +void et131x_enable_interrupts(struct et131x_adapter *adapter) +{ + u32 mask; + + /* Enable all global interrupts */ + if (adapter->flowcontrol == FLOW_TXONLY || + adapter->flowcontrol == FLOW_BOTH) + mask = INT_MASK_ENABLE; + else + mask = INT_MASK_ENABLE_NO_FLOW; + + writel(mask, &adapter->regs->global.int_mask); +} + +/** + * et131x_disable_interrupts - interrupt disable + * @adapter: et131x device + * + * Block all interrupts from the et131x device at the device itself + */ +void et131x_disable_interrupts(struct et131x_adapter *adapter) +{ + /* Disable all global interrupts */ + writel(INT_MASK_DISABLE, &adapter->regs->global.int_mask); +} + + +/** + * et131x_isr - The Interrupt Service Routine for the driver. + * @irq: the IRQ on which the interrupt was received. + * @dev_id: device-specific info (here a pointer to a net_device struct) + * + * Returns a value indicating if the interrupt was handled. + */ +irqreturn_t et131x_isr(int irq, void *dev_id) +{ + bool handled = true; + struct net_device *netdev = (struct net_device *)dev_id; + struct et131x_adapter *adapter = NULL; + u32 status; + + if (!netif_device_present(netdev)) { + handled = false; + goto out; + } + + adapter = netdev_priv(netdev); + + /* If the adapter is in low power state, then it should not + * recognize any interrupt + */ + + /* Disable Device Interrupts */ + et131x_disable_interrupts(adapter); + + /* Get a copy of the value in the interrupt status register + * so we can process the interrupting section + */ + status = readl(&adapter->regs->global.int_status); + + if (adapter->flowcontrol == FLOW_TXONLY || + adapter->flowcontrol == FLOW_BOTH) { + status &= ~INT_MASK_ENABLE; + } else { + status &= ~INT_MASK_ENABLE_NO_FLOW; + } + + /* Make sure this is our interrupt */ + if (!status) { + handled = false; + et131x_enable_interrupts(adapter); + goto out; + } + + /* This is our interrupt, so process accordingly */ + + if (status & ET_INTR_WATCHDOG) { + struct tcb *tcb = adapter->tx_ring.send_head; + + if (tcb) + if (++tcb->stale > 1) + status |= ET_INTR_TXDMA_ISR; + + if (adapter->rx_ring.unfinished_receives) + status |= ET_INTR_RXDMA_XFR_DONE; + else if (tcb == NULL) + writel(0, &adapter->regs->global.watchdog_timer); + + status &= ~ET_INTR_WATCHDOG; + } + + if (status == 0) { + /* This interrupt has in some way been "handled" by + * the ISR. Either it was a spurious Rx interrupt, or + * it was a Tx interrupt that has been filtered by + * the ISR. + */ + et131x_enable_interrupts(adapter); + goto out; + } + + /* We need to save the interrupt status value for use in our + * DPC. We will clear the software copy of that in that + * routine. + */ + adapter->stats.interrupt_status = status; + + /* Schedule the ISR handler as a bottom-half task in the + * kernel's tq_immediate queue, and mark the queue for + * execution + */ + schedule_work(&adapter->task); +out: + return IRQ_RETVAL(handled); +} + +/** + * et131x_isr_handler - The ISR handler + * @p_adapter, a pointer to the device's private adapter structure + * + * scheduled to run in a deferred context by the ISR. This is where the ISR's + * work actually gets done. + */ +void et131x_isr_handler(struct work_struct *work) +{ + struct et131x_adapter *adapter = + container_of(work, struct et131x_adapter, task); + u32 status = adapter->stats.interrupt_status; + struct address_map __iomem *iomem = adapter->regs; + + /* + * These first two are by far the most common. Once handled, we clear + * their two bits in the status word. If the word is now zero, we + * exit. + */ + /* Handle all the completed Transmit interrupts */ + if (status & ET_INTR_TXDMA_ISR) + et131x_handle_send_interrupt(adapter); + + /* Handle all the completed Receives interrupts */ + if (status & ET_INTR_RXDMA_XFR_DONE) + et131x_handle_recv_interrupt(adapter); + + status &= 0xffffffd7; + + if (status) { + /* Handle the TXDMA Error interrupt */ + if (status & ET_INTR_TXDMA_ERR) { + u32 txdma_err; + + /* Following read also clears the register (COR) */ + txdma_err = readl(&iomem->txdma.tx_dma_error); + + dev_warn(&adapter->pdev->dev, + "TXDMA_ERR interrupt, error = %d\n", + txdma_err); + } + + /* Handle Free Buffer Ring 0 and 1 Low interrupt */ + if (status & + (ET_INTR_RXDMA_FB_R0_LOW | ET_INTR_RXDMA_FB_R1_LOW)) { + /* + * This indicates the number of unused buffers in + * RXDMA free buffer ring 0 is <= the limit you + * programmed. Free buffer resources need to be + * returned. Free buffers are consumed as packets + * are passed from the network to the host. The host + * becomes aware of the packets from the contents of + * the packet status ring. This ring is queried when + * the packet done interrupt occurs. Packets are then + * passed to the OS. When the OS is done with the + * packets the resources can be returned to the + * ET1310 for re-use. This interrupt is one method of + * returning resources. + */ + + /* If the user has flow control on, then we will + * send a pause packet, otherwise just exit + */ + if (adapter->flowcontrol == FLOW_TXONLY || + adapter->flowcontrol == FLOW_BOTH) { + u32 pm_csr; + + /* Tell the device to send a pause packet via + * the back pressure register (bp req and + * bp xon/xoff) + */ + pm_csr = readl(&iomem->global.pm_csr); + if (!et1310_in_phy_coma(adapter)) + writel(3, &iomem->txmac.bp_ctrl); + } + } + + /* Handle Packet Status Ring Low Interrupt */ + if (status & ET_INTR_RXDMA_STAT_LOW) { + + /* + * Same idea as with the two Free Buffer Rings. + * Packets going from the network to the host each + * consume a free buffer resource and a packet status + * resource. These resoures are passed to the OS. + * When the OS is done with the resources, they need + * to be returned to the ET1310. This is one method + * of returning the resources. + */ + } + + /* Handle RXDMA Error Interrupt */ + if (status & ET_INTR_RXDMA_ERR) { + /* + * The rxdma_error interrupt is sent when a time-out + * on a request issued by the JAGCore has occurred or + * a completion is returned with an un-successful + * status. In both cases the request is considered + * complete. The JAGCore will automatically re-try the + * request in question. Normally information on events + * like these are sent to the host using the "Advanced + * Error Reporting" capability. This interrupt is + * another way of getting similar information. The + * only thing required is to clear the interrupt by + * reading the ISR in the global resources. The + * JAGCore will do a re-try on the request. Normally + * you should never see this interrupt. If you start + * to see this interrupt occurring frequently then + * something bad has occurred. A reset might be the + * thing to do. + */ + /* TRAP();*/ + + dev_warn(&adapter->pdev->dev, + "RxDMA_ERR interrupt, error %x\n", + readl(&iomem->txmac.tx_test)); + } + + /* Handle the Wake on LAN Event */ + if (status & ET_INTR_WOL) { + /* + * This is a secondary interrupt for wake on LAN. + * The driver should never see this, if it does, + * something serious is wrong. We will TRAP the + * message when we are in DBG mode, otherwise we + * will ignore it. + */ + dev_err(&adapter->pdev->dev, "WAKE_ON_LAN interrupt\n"); + } + + /* Let's move on to the TxMac */ + if (status & ET_INTR_TXMAC) { + u32 err = readl(&iomem->txmac.err); + + /* + * When any of the errors occur and TXMAC generates + * an interrupt to report these errors, it usually + * means that TXMAC has detected an error in the data + * stream retrieved from the on-chip Tx Q. All of + * these errors are catastrophic and TXMAC won't be + * able to recover data when these errors occur. In + * a nutshell, the whole Tx path will have to be reset + * and re-configured afterwards. + */ + dev_warn(&adapter->pdev->dev, + "TXMAC interrupt, error 0x%08x\n", + err); + + /* If we are debugging, we want to see this error, + * otherwise we just want the device to be reset and + * continue + */ + } + + /* Handle RXMAC Interrupt */ + if (status & ET_INTR_RXMAC) { + /* + * These interrupts are catastrophic to the device, + * what we need to do is disable the interrupts and + * set the flag to cause us to reset so we can solve + * this issue. + */ + /* MP_SET_FLAG( adapter, + fMP_ADAPTER_HARDWARE_ERROR); */ + + dev_warn(&adapter->pdev->dev, + "RXMAC interrupt, error 0x%08x. Requesting reset\n", + readl(&iomem->rxmac.err_reg)); + + dev_warn(&adapter->pdev->dev, + "Enable 0x%08x, Diag 0x%08x\n", + readl(&iomem->rxmac.ctrl), + readl(&iomem->rxmac.rxq_diag)); + + /* + * If we are debugging, we want to see this error, + * otherwise we just want the device to be reset and + * continue + */ + } + + /* Handle MAC_STAT Interrupt */ + if (status & ET_INTR_MAC_STAT) { + /* + * This means at least one of the un-masked counters + * in the MAC_STAT block has rolled over. Use this + * to maintain the top, software managed bits of the + * counter(s). + */ + et1310_handle_macstat_interrupt(adapter); + } + + /* Handle SLV Timeout Interrupt */ + if (status & ET_INTR_SLV_TIMEOUT) { + /* + * This means a timeout has occurred on a read or + * write request to one of the JAGCore registers. The + * Global Resources block has terminated the request + * and on a read request, returned a "fake" value. + * The most likely reasons are: Bad Address or the + * addressed module is in a power-down state and + * can't respond. + */ + } + } + et131x_enable_interrupts(adapter); +} + +/* NETDEV functions */ + +/** + * et131x_stats - Return the current device statistics. + * @netdev: device whose stats are being queried + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +static struct net_device_stats *et131x_stats(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + struct net_device_stats *stats = &adapter->net_stats; + struct ce_stats *devstat = &adapter->stats; + + stats->rx_errors = devstat->rx_length_errs + + devstat->rx_align_errs + + devstat->rx_crc_errs + + devstat->rx_code_violations + + devstat->rx_other_errs; + stats->tx_errors = devstat->tx_max_pkt_errs; + stats->multicast = devstat->multicast_pkts_rcvd; + stats->collisions = devstat->tx_collisions; + + stats->rx_length_errors = devstat->rx_length_errs; + stats->rx_over_errors = devstat->rx_overflows; + stats->rx_crc_errors = devstat->rx_crc_errs; + + /* NOTE: These stats don't have corresponding values in CE_STATS, + * so we're going to have to update these directly from within the + * TX/RX code + */ + /* stats->rx_bytes = 20; devstat->; */ + /* stats->tx_bytes = 20; devstat->; */ + /* stats->rx_dropped = devstat->; */ + /* stats->tx_dropped = devstat->; */ + + /* NOTE: Not used, can't find analogous statistics */ + /* stats->rx_frame_errors = devstat->; */ + /* stats->rx_fifo_errors = devstat->; */ + /* stats->rx_missed_errors = devstat->; */ + + /* stats->tx_aborted_errors = devstat->; */ + /* stats->tx_carrier_errors = devstat->; */ + /* stats->tx_fifo_errors = devstat->; */ + /* stats->tx_heartbeat_errors = devstat->; */ + /* stats->tx_window_errors = devstat->; */ + return stats; +} + +/** + * et131x_enable_txrx - Enable tx/rx queues + * @netdev: device to be enabled + */ +void et131x_enable_txrx(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + /* Enable the Tx and Rx DMA engines (if not already enabled) */ + et131x_rx_dma_enable(adapter); + et131x_tx_dma_enable(adapter); + + /* Enable device interrupts */ + if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE) + et131x_enable_interrupts(adapter); + + /* We're ready to move some data, so start the queue */ + netif_start_queue(netdev); +} + +/** + * et131x_disable_txrx - Disable tx/rx queues + * @netdev: device to be disabled + */ +void et131x_disable_txrx(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + /* First thing is to stop the queue */ + netif_stop_queue(netdev); + + /* Stop the Tx and Rx DMA engines */ + et131x_rx_dma_disable(adapter); + et131x_tx_dma_disable(adapter); + + /* Disable device interrupts */ + et131x_disable_interrupts(adapter); +} + +/** + * et131x_up - Bring up a device for use. + * @netdev: device to be opened + */ +void et131x_up(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + et131x_enable_txrx(netdev); + phy_start(adapter->phydev); +} + +/** + * et131x_open - Open the device for use. + * @netdev: device to be opened + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +int et131x_open(struct net_device *netdev) +{ + int result = 0; + struct et131x_adapter *adapter = netdev_priv(netdev); + + /* Start the timer to track NIC errors */ + init_timer(&adapter->error_timer); + adapter->error_timer.expires = jiffies + TX_ERROR_PERIOD * HZ / 1000; + adapter->error_timer.function = et131x_error_timer_handler; + adapter->error_timer.data = (unsigned long)adapter; + add_timer(&adapter->error_timer); + + /* Register our IRQ */ + result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED, + netdev->name, netdev); + if (result) { + dev_err(&adapter->pdev->dev, "could not register IRQ %d\n", + netdev->irq); + return result; + } + + adapter->flags |= fMP_ADAPTER_INTERRUPT_IN_USE; + + et131x_up(netdev); + + return result; +} + +/** + * et131x_down - Bring down the device + * @netdev: device to be broght down + */ +void et131x_down(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + /* Save the timestamp for the TX watchdog, prevent a timeout */ + netdev->trans_start = jiffies; + + phy_stop(adapter->phydev); + et131x_disable_txrx(netdev); +} + +/** + * et131x_close - Close the device + * @netdev: device to be closed + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +int et131x_close(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + et131x_down(netdev); + + adapter->flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE; + free_irq(netdev->irq, netdev); + + /* Stop the error timer */ + return del_timer_sync(&adapter->error_timer); +} + +/** + * et131x_ioctl - The I/O Control handler for the driver + * @netdev: device on which the control request is being made + * @reqbuf: a pointer to the IOCTL request buffer + * @cmd: the IOCTL command code + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +static int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + + if (!adapter->phydev) + return -EINVAL; + + return phy_mii_ioctl(adapter->phydev, reqbuf, cmd); +} + +/** + * et131x_set_packet_filter - Configures the Rx Packet filtering on the device + * @adapter: pointer to our private adapter structure + * + * FIXME: lot of dups with MAC code + * + * Returns 0 on success, errno on failure + */ +static int et131x_set_packet_filter(struct et131x_adapter *adapter) +{ + int status = 0; + uint32_t filter = adapter->packet_filter; + u32 ctrl; + u32 pf_ctrl; + + ctrl = readl(&adapter->regs->rxmac.ctrl); + pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl); + + /* Default to disabled packet filtering. Enable it in the individual + * case statements that require the device to filter something + */ + ctrl |= 0x04; + + /* Set us to be in promiscuous mode so we receive everything, this + * is also true when we get a packet filter of 0 + */ + if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0) + pf_ctrl &= ~7; /* Clear filter bits */ + else { + /* + * Set us up with Multicast packet filtering. Three cases are + * possible - (1) we have a multi-cast list, (2) we receive ALL + * multicast entries or (3) we receive none. + */ + if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST) + pf_ctrl &= ~2; /* Multicast filter bit */ + else { + et1310_setup_device_for_multicast(adapter); + pf_ctrl |= 2; + ctrl &= ~0x04; + } + + /* Set us up with Unicast packet filtering */ + if (filter & ET131X_PACKET_TYPE_DIRECTED) { + et1310_setup_device_for_unicast(adapter); + pf_ctrl |= 4; + ctrl &= ~0x04; + } + + /* Set us up with Broadcast packet filtering */ + if (filter & ET131X_PACKET_TYPE_BROADCAST) { + pf_ctrl |= 1; /* Broadcast filter bit */ + ctrl &= ~0x04; + } else + pf_ctrl &= ~1; + + /* Setup the receive mac configuration registers - Packet + * Filter control + the enable / disable for packet filter + * in the control reg. + */ + writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl); + writel(ctrl, &adapter->regs->rxmac.ctrl); + } + return status; +} + +/** + * et131x_multicast - The handler to configure multicasting on the interface + * @netdev: a pointer to a net_device struct representing the device + */ +static void et131x_multicast(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + uint32_t packet_filter = 0; + unsigned long flags; + struct netdev_hw_addr *ha; + int i; + + spin_lock_irqsave(&adapter->lock, flags); + + /* Before we modify the platform-independent filter flags, store them + * locally. This allows us to determine if anything's changed and if + * we even need to bother the hardware + */ + packet_filter = adapter->packet_filter; + + /* Clear the 'multicast' flag locally; because we only have a single + * flag to check multicast, and multiple multicast addresses can be + * set, this is the easiest way to determine if more than one + * multicast address is being set. + */ + packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST; + + /* Check the net_device flags and set the device independent flags + * accordingly + */ + + if (netdev->flags & IFF_PROMISC) + adapter->packet_filter |= ET131X_PACKET_TYPE_PROMISCUOUS; + else + adapter->packet_filter &= ~ET131X_PACKET_TYPE_PROMISCUOUS; + + if (netdev->flags & IFF_ALLMULTI) + adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST; + + if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST) + adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST; + + if (netdev_mc_count(netdev) < 1) { + adapter->packet_filter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST; + adapter->packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST; + } else + adapter->packet_filter |= ET131X_PACKET_TYPE_MULTICAST; + + /* Set values in the private adapter struct */ + i = 0; + netdev_for_each_mc_addr(ha, netdev) { + if (i == NIC_MAX_MCAST_LIST) + break; + memcpy(adapter->multicast_list[i++], ha->addr, ETH_ALEN); + } + adapter->multicast_addr_count = i; + + /* Are the new flags different from the previous ones? If not, then no + * action is required + * + * NOTE - This block will always update the multicast_list with the + * hardware, even if the addresses aren't the same. + */ + if (packet_filter != adapter->packet_filter) { + /* Call the device's filter function */ + et131x_set_packet_filter(adapter); + } + spin_unlock_irqrestore(&adapter->lock, flags); +} + +/** + * et131x_tx - The handler to tx a packet on the device + * @skb: data to be Tx'd + * @netdev: device on which data is to be Tx'd + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +static int et131x_tx(struct sk_buff *skb, struct net_device *netdev) +{ + int status = 0; + + /* Save the timestamp for the TX timeout watchdog */ + netdev->trans_start = jiffies; + + /* Call the device-specific data Tx routine */ + status = et131x_send_packets(skb, netdev); + + /* Check status and manage the netif queue if necessary */ + if (status != 0) { + if (status == -ENOMEM) { + /* Put the queue to sleep until resources are + * available + */ + netif_stop_queue(netdev); + status = NETDEV_TX_BUSY; + } else { + status = NETDEV_TX_OK; + } + } + return status; +} + +/** + * et131x_tx_timeout - Timeout handler + * @netdev: a pointer to a net_device struct representing the device + * + * The handler called when a Tx request times out. The timeout period is + * specified by the 'tx_timeo" element in the net_device structure (see + * et131x_alloc_device() to see how this value is set). + */ +static void et131x_tx_timeout(struct net_device *netdev) +{ + struct et131x_adapter *adapter = netdev_priv(netdev); + struct tcb *tcb; + unsigned long flags; + + /* If the device is closed, ignore the timeout */ + if (~(adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)) + return; + + /* Any nonrecoverable hardware error? + * Checks adapter->flags for any failure in phy reading + */ + if (adapter->flags & fMP_ADAPTER_NON_RECOVER_ERROR) + return; + + /* Hardware failure? */ + if (adapter->flags & fMP_ADAPTER_HARDWARE_ERROR) { + dev_err(&adapter->pdev->dev, "hardware error - reset\n"); + return; + } + + /* Is send stuck? */ + spin_lock_irqsave(&adapter->tcb_send_qlock, flags); + + tcb = adapter->tx_ring.send_head; + + if (tcb != NULL) { + tcb->count++; + + if (tcb->count > NIC_SEND_HANG_THRESHOLD) { + spin_unlock_irqrestore(&adapter->tcb_send_qlock, + flags); + + dev_warn(&adapter->pdev->dev, + "Send stuck - reset. tcb->WrIndex %x, flags 0x%08x\n", + tcb->index, + tcb->flags); + + adapter->net_stats.tx_errors++; + + /* perform reset of tx/rx */ + et131x_disable_txrx(netdev); + et131x_enable_txrx(netdev); + return; + } + } + + spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); +} + +/** + * et131x_change_mtu - The handler called to change the MTU for the device + * @netdev: device whose MTU is to be changed + * @new_mtu: the desired MTU + * + * Returns 0 on success, errno on failure (as defined in errno.h) + */ +static int et131x_change_mtu(struct net_device *netdev, int new_mtu) +{ + int result = 0; + struct et131x_adapter *adapter = netdev_priv(netdev); + + /* Make sure the requested MTU is valid */ + if (new_mtu < 64 || new_mtu > 9216) + return -EINVAL; + + et131x_disable_txrx(netdev); + et131x_handle_send_interrupt(adapter); + et131x_handle_recv_interrupt(adapter); + + /* Set the new MTU */ + netdev->mtu = new_mtu; + + /* Free Rx DMA memory */ + et131x_adapter_memory_free(adapter); + + /* Set the config parameter for Jumbo Packet support */ + adapter->registry_jumbo_packet = new_mtu + 14; + et131x_soft_reset(adapter); + + /* Alloc and init Rx DMA memory */ + result = et131x_adapter_memory_alloc(adapter); + if (result != 0) { + dev_warn(&adapter->pdev->dev, + "Change MTU failed; couldn't re-alloc DMA memory\n"); + return result; + } + + et131x_init_send(adapter); + + et131x_hwaddr_init(adapter); + memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN); + + /* Init the device with the new settings */ + et131x_adapter_setup(adapter); + + et131x_enable_txrx(netdev); + + return result; +} + +/** + * et131x_set_mac_addr - handler to change the MAC address for the device + * @netdev: device whose MAC is to be changed + * @new_mac: the desired MAC address + * + * Returns 0 on success, errno on failure (as defined in errno.h) + * + * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14 + */ +static int et131x_set_mac_addr(struct net_device *netdev, void *new_mac) +{ + int result = 0; + struct et131x_adapter *adapter = netdev_priv(netdev); + struct sockaddr *address = new_mac; + + /* begin blux */ + + if (adapter == NULL) + return -ENODEV; + + /* Make sure the requested MAC is valid */ + if (!is_valid_ether_addr(address->sa_data)) + return -EINVAL; + + et131x_disable_txrx(netdev); + et131x_handle_send_interrupt(adapter); + et131x_handle_recv_interrupt(adapter); + + /* Set the new MAC */ + /* netdev->set_mac_address = &new_mac; */ + + memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len); + + printk(KERN_INFO "%s: Setting MAC address to %pM\n", + netdev->name, netdev->dev_addr); + + /* Free Rx DMA memory */ + et131x_adapter_memory_free(adapter); + + et131x_soft_reset(adapter); + + /* Alloc and init Rx DMA memory */ + result = et131x_adapter_memory_alloc(adapter); + if (result != 0) { + dev_err(&adapter->pdev->dev, + "Change MAC failed; couldn't re-alloc DMA memory\n"); + return result; + } + + et131x_init_send(adapter); + + et131x_hwaddr_init(adapter); + + /* Init the device with the new settings */ + et131x_adapter_setup(adapter); + + et131x_enable_txrx(netdev); + + return result; +} + +static const struct net_device_ops et131x_netdev_ops = { + .ndo_open = et131x_open, + .ndo_stop = et131x_close, + .ndo_start_xmit = et131x_tx, + .ndo_set_multicast_list = et131x_multicast, + .ndo_tx_timeout = et131x_tx_timeout, + .ndo_change_mtu = et131x_change_mtu, + .ndo_set_mac_address = et131x_set_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_get_stats = et131x_stats, + .ndo_do_ioctl = et131x_ioctl, +}; + +/** + * et131x_device_alloc + * + * Returns pointer to the allocated and initialized net_device struct for + * this device. + * + * Create instances of net_device and wl_private for the new adapter and + * register the device's entry points in the net_device structure. + */ +struct net_device *et131x_device_alloc(void) +{ + struct net_device *netdev; + + /* Alloc net_device and adapter structs */ + netdev = alloc_etherdev(sizeof(struct et131x_adapter)); + + if (!netdev) { + printk(KERN_ERR "et131x: Alloc of net_device struct failed\n"); + return NULL; + } + + /* + * Setup the function registration table (and other data) for a + * net_device + */ + netdev->watchdog_timeo = ET131X_TX_TIMEOUT; + netdev->netdev_ops = &et131x_netdev_ops; + + /* Poll? */ + /* netdev->poll = &et131x_poll; */ + /* netdev->poll_controller = &et131x_poll_controller; */ + return netdev; +} + diff --git a/drivers/staging/et131x/et131x.h b/drivers/staging/et131x/et131x.h index 24570ca80395..0531414f32d4 100644 --- a/drivers/staging/et131x/et131x.h +++ b/drivers/staging/et131x/et131x.h @@ -1,6 +1,4 @@ /* - * Merged from files - * * Copyright © 2005 Agere Systems Inc. * All rights reserved. * http://www.agere.com @@ -51,6 +49,66 @@ #define DRIVER_NAME "et131x" #define DRIVER_VERSION "v2.0" +/* EEPROM defines */ + +/* LBCIF Register Groups (addressed via 32-bit offsets) */ +#define LBCIF_DWORD0_GROUP 0xAC +#define LBCIF_DWORD1_GROUP 0xB0 + +/* LBCIF Registers (addressed via 8-bit offsets) */ +#define LBCIF_ADDRESS_REGISTER 0xAC +#define LBCIF_DATA_REGISTER 0xB0 +#define LBCIF_CONTROL_REGISTER 0xB1 +#define LBCIF_STATUS_REGISTER 0xB2 + +/* LBCIF Control Register Bits */ +#define LBCIF_CONTROL_SEQUENTIAL_READ 0x01 +#define LBCIF_CONTROL_PAGE_WRITE 0x02 +#define LBCIF_CONTROL_EEPROM_RELOAD 0x08 +#define LBCIF_CONTROL_TWO_BYTE_ADDR 0x20 +#define LBCIF_CONTROL_I2C_WRITE 0x40 +#define LBCIF_CONTROL_LBCIF_ENABLE 0x80 + +/* LBCIF Status Register Bits */ +#define LBCIF_STATUS_PHY_QUEUE_AVAIL 0x01 +#define LBCIF_STATUS_I2C_IDLE 0x02 +#define LBCIF_STATUS_ACK_ERROR 0x04 +#define LBCIF_STATUS_GENERAL_ERROR 0x08 +#define LBCIF_STATUS_CHECKSUM_ERROR 0x40 +#define LBCIF_STATUS_EEPROM_PRESENT 0x80 + +/* Miscellaneous Constraints */ +#define MAX_NUM_REGISTER_POLLS 1000 +#define MAX_NUM_WRITE_RETRIES 2 + +/* MAC defines */ +#define COUNTER_WRAP_16_BIT 0x10000 +#define COUNTER_WRAP_12_BIT 0x1000 + +/* PCI defines */ +#define INTERNAL_MEM_SIZE 0x400 /* 1024 of internal memory */ +#define INTERNAL_MEM_RX_OFFSET 0x1FF /* 50% Tx, 50% Rx */ + +/* ISR defines */ +/* + * For interrupts, normal running is: + * rxdma_xfr_done, phy_interrupt, mac_stat_interrupt, + * watchdog_interrupt & txdma_xfer_done + * + * In both cases, when flow control is enabled for either Tx or bi-direction, + * we additional enable rx_fbr0_low and rx_fbr1_low, so we know when the + * buffer rings are running low. + */ +#define INT_MASK_DISABLE 0xffffffff + +/* NOTE: Masking out MAC_STAT Interrupt for now... + * #define INT_MASK_ENABLE 0xfff6bf17 + * #define INT_MASK_ENABLE_NO_FLOW 0xfff6bfd7 + */ +#define INT_MASK_ENABLE 0xfffebf17 +#define INT_MASK_ENABLE_NO_FLOW 0xfffebfd7 + + /* et131x_eeprom.c */ int et131x_init_eeprom(struct et131x_adapter *adapter); diff --git a/drivers/staging/et131x/et131x_ethtool.c b/drivers/staging/et131x/et131x_ethtool.c deleted file mode 100644 index ff95a3e8cb02..000000000000 --- a/drivers/staging/et131x/et131x_ethtool.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Copyright (c) 2011 Mark Einon - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include -#include - -#include "et131x_adapter.h" -#include "et1310_phy.h" -#include "et131x.h" - -static int et131x_get_settings(struct net_device *netdev, - struct ethtool_cmd *cmd) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - return phy_ethtool_gset(adapter->phydev, cmd); -} - -static int et131x_set_settings(struct net_device *netdev, - struct ethtool_cmd *cmd) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - return phy_ethtool_sset(adapter->phydev, cmd); -} - -static int et131x_get_regs_len(struct net_device *netdev) -{ -#define ET131X_REGS_LEN 256 - return ET131X_REGS_LEN * sizeof(u32); -} - -static void et131x_get_regs(struct net_device *netdev, - struct ethtool_regs *regs, void *regs_data) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - struct address_map __iomem *aregs = adapter->regs; - u32 *regs_buff = regs_data; - u32 num = 0; - - memset(regs_data, 0, et131x_get_regs_len(netdev)); - - regs->version = (1 << 24) | (adapter->pdev->revision << 16) | - adapter->pdev->device; - - /* PHY regs */ - et131x_mii_read(adapter, MII_BMCR, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_BMSR, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_PHYSID1, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_PHYSID2, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_ADVERTISE, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_LPA, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_EXPANSION, (u16 *)®s_buff[num++]); - /* Autoneg next page transmit reg */ - et131x_mii_read(adapter, 0x07, (u16 *)®s_buff[num++]); - /* Link partner next page reg */ - et131x_mii_read(adapter, 0x08, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_CTRL1000, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_STAT1000, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, MII_ESTATUS, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_INDEX_REG, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_DATA_REG, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, - (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL, - (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_LOOPBACK_CONTROL+1, - (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_REGISTER_MGMT_CONTROL, - (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_CONFIG, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_PHY_CONTROL, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_INTERRUPT_MASK, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_INTERRUPT_STATUS, - (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_PHY_STATUS, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_LED_1, (u16 *)®s_buff[num++]); - et131x_mii_read(adapter, PHY_LED_2, (u16 *)®s_buff[num++]); - - /* Global regs */ - regs_buff[num++] = readl(&aregs->global.txq_start_addr); - regs_buff[num++] = readl(&aregs->global.txq_end_addr); - regs_buff[num++] = readl(&aregs->global.rxq_start_addr); - regs_buff[num++] = readl(&aregs->global.rxq_end_addr); - regs_buff[num++] = readl(&aregs->global.pm_csr); - regs_buff[num++] = adapter->stats.interrupt_status; - regs_buff[num++] = readl(&aregs->global.int_mask); - regs_buff[num++] = readl(&aregs->global.int_alias_clr_en); - regs_buff[num++] = readl(&aregs->global.int_status_alias); - regs_buff[num++] = readl(&aregs->global.sw_reset); - regs_buff[num++] = readl(&aregs->global.slv_timer); - regs_buff[num++] = readl(&aregs->global.msi_config); - regs_buff[num++] = readl(&aregs->global.loopback); - regs_buff[num++] = readl(&aregs->global.watchdog_timer); - - /* TXDMA regs */ - regs_buff[num++] = readl(&aregs->txdma.csr); - regs_buff[num++] = readl(&aregs->txdma.pr_base_hi); - regs_buff[num++] = readl(&aregs->txdma.pr_base_lo); - regs_buff[num++] = readl(&aregs->txdma.pr_num_des); - regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr); - regs_buff[num++] = readl(&aregs->txdma.txq_wr_addr_ext); - regs_buff[num++] = readl(&aregs->txdma.txq_rd_addr); - regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_hi); - regs_buff[num++] = readl(&aregs->txdma.dma_wb_base_lo); - regs_buff[num++] = readl(&aregs->txdma.service_request); - regs_buff[num++] = readl(&aregs->txdma.service_complete); - regs_buff[num++] = readl(&aregs->txdma.cache_rd_index); - regs_buff[num++] = readl(&aregs->txdma.cache_wr_index); - regs_buff[num++] = readl(&aregs->txdma.tx_dma_error); - regs_buff[num++] = readl(&aregs->txdma.desc_abort_cnt); - regs_buff[num++] = readl(&aregs->txdma.payload_abort_cnt); - regs_buff[num++] = readl(&aregs->txdma.writeback_abort_cnt); - regs_buff[num++] = readl(&aregs->txdma.desc_timeout_cnt); - regs_buff[num++] = readl(&aregs->txdma.payload_timeout_cnt); - regs_buff[num++] = readl(&aregs->txdma.writeback_timeout_cnt); - regs_buff[num++] = readl(&aregs->txdma.desc_error_cnt); - regs_buff[num++] = readl(&aregs->txdma.payload_error_cnt); - regs_buff[num++] = readl(&aregs->txdma.writeback_error_cnt); - regs_buff[num++] = readl(&aregs->txdma.dropped_tlp_cnt); - regs_buff[num++] = readl(&aregs->txdma.new_service_complete); - regs_buff[num++] = readl(&aregs->txdma.ethernet_packet_cnt); - - /* RXDMA regs */ - regs_buff[num++] = readl(&aregs->rxdma.csr); - regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_hi); - regs_buff[num++] = readl(&aregs->rxdma.dma_wb_base_lo); - regs_buff[num++] = readl(&aregs->rxdma.num_pkt_done); - regs_buff[num++] = readl(&aregs->rxdma.max_pkt_time); - regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr); - regs_buff[num++] = readl(&aregs->rxdma.rxq_rd_addr_ext); - regs_buff[num++] = readl(&aregs->rxdma.rxq_wr_addr); - regs_buff[num++] = readl(&aregs->rxdma.psr_base_hi); - regs_buff[num++] = readl(&aregs->rxdma.psr_base_lo); - regs_buff[num++] = readl(&aregs->rxdma.psr_num_des); - regs_buff[num++] = readl(&aregs->rxdma.psr_avail_offset); - regs_buff[num++] = readl(&aregs->rxdma.psr_full_offset); - regs_buff[num++] = readl(&aregs->rxdma.psr_access_index); - regs_buff[num++] = readl(&aregs->rxdma.psr_min_des); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_lo); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_base_hi); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_num_des); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_avail_offset); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_full_offset); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_rd_index); - regs_buff[num++] = readl(&aregs->rxdma.fbr0_min_des); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_lo); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_base_hi); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_num_des); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_avail_offset); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_full_offset); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_rd_index); - regs_buff[num++] = readl(&aregs->rxdma.fbr1_min_des); -} - -#define ET131X_DRVINFO_LEN 32 /* value from ethtool.h */ -static void et131x_get_drvinfo(struct net_device *netdev, - struct ethtool_drvinfo *info) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - strncpy(info->driver, DRIVER_NAME, ET131X_DRVINFO_LEN); - strncpy(info->version, DRIVER_VERSION, ET131X_DRVINFO_LEN); - strncpy(info->bus_info, pci_name(adapter->pdev), ET131X_DRVINFO_LEN); -} - -static struct ethtool_ops et131x_ethtool_ops = { - .get_settings = et131x_get_settings, - .set_settings = et131x_set_settings, - .get_drvinfo = et131x_get_drvinfo, - .get_regs_len = et131x_get_regs_len, - .get_regs = et131x_get_regs, - .get_link = ethtool_op_get_link, -}; - -void et131x_set_ethtool_ops(struct net_device *netdev) -{ - SET_ETHTOOL_OPS(netdev, &et131x_ethtool_ops); -} - diff --git a/drivers/staging/et131x/et131x_initpci.c b/drivers/staging/et131x/et131x_initpci.c deleted file mode 100644 index 45ce8321f31b..000000000000 --- a/drivers/staging/et131x/et131x_initpci.c +++ /dev/null @@ -1,950 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et131x_initpci.c - Routines and data used to register the driver with the - * PCI (and PCI Express) subsystem, as well as basic driver - * init and startup. - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" - -#include "et131x_adapter.h" - -#include "et1310_address_map.h" -#include "et1310_tx.h" -#include "et1310_rx.h" -#include "et131x.h" - -#define INTERNAL_MEM_SIZE 0x400 /* 1024 of internal memory */ -#define INTERNAL_MEM_RX_OFFSET 0x1FF /* 50% Tx, 50% Rx */ - -/** - * et131x_hwaddr_init - set up the MAC Address on the ET1310 - * @adapter: pointer to our private adapter structure - */ -void et131x_hwaddr_init(struct et131x_adapter *adapter) -{ - /* If have our default mac from init and no mac address from - * EEPROM then we need to generate the last octet and set it on the - * device - */ - if (adapter->rom_addr[0] == 0x00 && - adapter->rom_addr[1] == 0x00 && - adapter->rom_addr[2] == 0x00 && - adapter->rom_addr[3] == 0x00 && - adapter->rom_addr[4] == 0x00 && - adapter->rom_addr[5] == 0x00) { - /* - * We need to randomly generate the last octet so we - * decrease our chances of setting the mac address to - * same as another one of our cards in the system - */ - get_random_bytes(&adapter->addr[5], 1); - /* - * We have the default value in the register we are - * working with so we need to copy the current - * address into the permanent address - */ - memcpy(adapter->rom_addr, - adapter->addr, ETH_ALEN); - } else { - /* We do not have an override address, so set the - * current address to the permanent address and add - * it to the device - */ - memcpy(adapter->addr, - adapter->rom_addr, ETH_ALEN); - } -} - -/** - * et131x_pci_init - initial PCI setup - * @adapter: pointer to our private adapter structure - * @pdev: our PCI device - * - * Perform the initial setup of PCI registers and if possible initialise - * the MAC address. At this point the I/O registers have yet to be mapped - */ -static int et131x_pci_init(struct et131x_adapter *adapter, - struct pci_dev *pdev) -{ - int i; - u8 max_payload; - u8 read_size_reg; - - if (et131x_init_eeprom(adapter) < 0) - return -EIO; - - /* Let's set up the PORT LOGIC Register. First we need to know what - * the max_payload_size is - */ - if (pci_read_config_byte(pdev, ET1310_PCI_MAX_PYLD, &max_payload)) { - dev_err(&pdev->dev, - "Could not read PCI config space for Max Payload Size\n"); - return -EIO; - } - - /* Program the Ack/Nak latency and replay timers */ - max_payload &= 0x07; /* Only the lower 3 bits are valid */ - - if (max_payload < 2) { - static const u16 acknak[2] = { 0x76, 0xD0 }; - static const u16 replay[2] = { 0x1E0, 0x2ED }; - - if (pci_write_config_word(pdev, ET1310_PCI_ACK_NACK, - acknak[max_payload])) { - dev_err(&pdev->dev, - "Could not write PCI config space for ACK/NAK\n"); - return -EIO; - } - if (pci_write_config_word(pdev, ET1310_PCI_REPLAY, - replay[max_payload])) { - dev_err(&pdev->dev, - "Could not write PCI config space for Replay Timer\n"); - return -EIO; - } - } - - /* l0s and l1 latency timers. We are using default values. - * Representing 001 for L0s and 010 for L1 - */ - if (pci_write_config_byte(pdev, ET1310_PCI_L0L1LATENCY, 0x11)) { - dev_err(&pdev->dev, - "Could not write PCI config space for Latency Timers\n"); - return -EIO; - } - - /* Change the max read size to 2k */ - if (pci_read_config_byte(pdev, 0x51, &read_size_reg)) { - dev_err(&pdev->dev, - "Could not read PCI config space for Max read size\n"); - return -EIO; - } - - read_size_reg &= 0x8f; - read_size_reg |= 0x40; - - if (pci_write_config_byte(pdev, 0x51, read_size_reg)) { - dev_err(&pdev->dev, - "Could not write PCI config space for Max read size\n"); - return -EIO; - } - - /* Get MAC address from config space if an eeprom exists, otherwise - * the MAC address there will not be valid - */ - if (!adapter->has_eeprom) { - et131x_hwaddr_init(adapter); - return 0; - } - - for (i = 0; i < ETH_ALEN; i++) { - if (pci_read_config_byte(pdev, ET1310_PCI_MAC_ADDRESS + i, - adapter->rom_addr + i)) { - dev_err(&pdev->dev, "Could not read PCI config space for MAC address\n"); - return -EIO; - } - } - memcpy(adapter->addr, adapter->rom_addr, ETH_ALEN); - return 0; -} - -/** - * et131x_error_timer_handler - * @data: timer-specific variable; here a pointer to our adapter structure - * - * The routine called when the error timer expires, to track the number of - * recurring errors. - */ -void et131x_error_timer_handler(unsigned long data) -{ - struct et131x_adapter *adapter = (struct et131x_adapter *) data; - struct phy_device *phydev = adapter->phydev; - - if (et1310_in_phy_coma(adapter)) { - /* Bring the device immediately out of coma, to - * prevent it from sleeping indefinitely, this - * mechanism could be improved! */ - et1310_disable_phy_coma(adapter); - adapter->boot_coma = 20; - } else { - et1310_update_macstat_host_counters(adapter); - } - - if (!phydev->link && adapter->boot_coma < 11) - adapter->boot_coma++; - - if (adapter->boot_coma == 10) { - if (!phydev->link) { - if (!et1310_in_phy_coma(adapter)) { - /* NOTE - This was originally a 'sync with - * interrupt'. How to do that under Linux? - */ - et131x_enable_interrupts(adapter); - et1310_enable_phy_coma(adapter); - } - } - } - - /* This is a periodic timer, so reschedule */ - mod_timer(&adapter->error_timer, jiffies + - TX_ERROR_PERIOD * HZ / 1000); -} - -/** - * et131x_configure_global_regs - configure JAGCore global regs - * @adapter: pointer to our adapter structure - * - * Used to configure the global registers on the JAGCore - */ -void et131x_configure_global_regs(struct et131x_adapter *adapter) -{ - struct global_regs __iomem *regs = &adapter->regs->global; - - writel(0, ®s->rxq_start_addr); - writel(INTERNAL_MEM_SIZE - 1, ®s->txq_end_addr); - - if (adapter->registry_jumbo_packet < 2048) { - /* Tx / RxDMA and Tx/Rx MAC interfaces have a 1k word - * block of RAM that the driver can split between Tx - * and Rx as it desires. Our default is to split it - * 50/50: - */ - writel(PARM_RX_MEM_END_DEF, ®s->rxq_end_addr); - writel(PARM_RX_MEM_END_DEF + 1, ®s->txq_start_addr); - } else if (adapter->registry_jumbo_packet < 8192) { - /* For jumbo packets > 2k but < 8k, split 50-50. */ - writel(INTERNAL_MEM_RX_OFFSET, ®s->rxq_end_addr); - writel(INTERNAL_MEM_RX_OFFSET + 1, ®s->txq_start_addr); - } else { - /* 9216 is the only packet size greater than 8k that - * is available. The Tx buffer has to be big enough - * for one whole packet on the Tx side. We'll make - * the Tx 9408, and give the rest to Rx - */ - writel(0x01b3, ®s->rxq_end_addr); - writel(0x01b4, ®s->txq_start_addr); - } - - /* Initialize the loopback register. Disable all loopbacks. */ - writel(0, ®s->loopback); - - /* MSI Register */ - writel(0, ®s->msi_config); - - /* By default, disable the watchdog timer. It will be enabled when - * a packet is queued. - */ - writel(0, ®s->watchdog_timer); -} - -/** - * et131x_adapter_setup - Set the adapter up as per cassini+ documentation - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -void et131x_adapter_setup(struct et131x_adapter *adapter) -{ - /* Configure the JAGCore */ - et131x_configure_global_regs(adapter); - - et1310_config_mac_regs1(adapter); - - /* Configure the MMC registers */ - /* All we need to do is initialize the Memory Control Register */ - writel(ET_MMC_ENABLE, &adapter->regs->mmc.mmc_ctrl); - - et1310_config_rxmac_regs(adapter); - et1310_config_txmac_regs(adapter); - - et131x_config_rx_dma_regs(adapter); - et131x_config_tx_dma_regs(adapter); - - et1310_config_macstat_regs(adapter); - - et1310_phy_power_down(adapter, 0); - et131x_xcvr_init(adapter); -} - -/** - * et131x_soft_reset - Issue a soft reset to the hardware, complete for ET1310 - * @adapter: pointer to our private adapter structure - */ -void et131x_soft_reset(struct et131x_adapter *adapter) -{ - /* Disable MAC Core */ - writel(0xc00f0000, &adapter->regs->mac.cfg1); - - /* Set everything to a reset value */ - writel(0x7F, &adapter->regs->global.sw_reset); - writel(0x000f0000, &adapter->regs->mac.cfg1); - writel(0x00000000, &adapter->regs->mac.cfg1); -} - -/** - * et131x_align_allocated_memory - Align allocated memory on a given boundary - * @adapter: pointer to our adapter structure - * @phys_addr: pointer to Physical address - * @offset: pointer to the offset variable - * @mask: correct mask - */ -void et131x_align_allocated_memory(struct et131x_adapter *adapter, - uint64_t *phys_addr, - uint64_t *offset, uint64_t mask) -{ - uint64_t new_addr; - - *offset = 0; - - new_addr = *phys_addr & ~mask; - - if (new_addr != *phys_addr) { - /* Move to next aligned block */ - new_addr += mask + 1; - /* Return offset for adjusting virt addr */ - *offset = new_addr - *phys_addr; - /* Return new physical address */ - *phys_addr = new_addr; - } -} - -/** - * et131x_adapter_memory_alloc - * @adapter: pointer to our private adapter structure - * - * Returns 0 on success, errno on failure (as defined in errno.h). - * - * Allocate all the memory blocks for send, receive and others. - */ -int et131x_adapter_memory_alloc(struct et131x_adapter *adapter) -{ - int status; - - /* Allocate memory for the Tx Ring */ - status = et131x_tx_dma_memory_alloc(adapter); - if (status != 0) { - dev_err(&adapter->pdev->dev, - "et131x_tx_dma_memory_alloc FAILED\n"); - return status; - } - /* Receive buffer memory allocation */ - status = et131x_rx_dma_memory_alloc(adapter); - if (status != 0) { - dev_err(&adapter->pdev->dev, - "et131x_rx_dma_memory_alloc FAILED\n"); - et131x_tx_dma_memory_free(adapter); - return status; - } - - /* Init receive data structures */ - status = et131x_init_recv(adapter); - if (status != 0) { - dev_err(&adapter->pdev->dev, - "et131x_init_recv FAILED\n"); - et131x_tx_dma_memory_free(adapter); - et131x_rx_dma_memory_free(adapter); - } - return status; -} - -/** - * et131x_adapter_memory_free - Free all memory allocated for use by Tx & Rx - * @adapter: pointer to our private adapter structure - */ -void et131x_adapter_memory_free(struct et131x_adapter *adapter) -{ - /* Free DMA memory */ - et131x_tx_dma_memory_free(adapter); - et131x_rx_dma_memory_free(adapter); -} - -static void et131x_adjust_link(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - struct phy_device *phydev = adapter->phydev; - - if (netif_carrier_ok(netdev)) { - adapter->boot_coma = 20; - - if (phydev && phydev->speed == SPEED_10) { - /* - * NOTE - Is there a way to query this without - * TruePHY? - * && TRU_QueryCoreType(adapter->hTruePhy, 0)== - * EMI_TRUEPHY_A13O) { - */ - u16 register18; - - et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, - ®ister18); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18 | 0x4); - et131x_mii_write(adapter, PHY_INDEX_REG, - register18 | 0x8402); - et131x_mii_write(adapter, PHY_DATA_REG, - register18 | 511); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18); - } - - et1310_config_flow_control(adapter); - - if (phydev && phydev->speed == SPEED_1000 && - adapter->registry_jumbo_packet > 2048) { - u16 reg; - - et131x_mii_read(adapter, PHY_CONFIG, ®); - reg &= ~ET_PHY_CONFIG_TX_FIFO_DEPTH; - reg |= ET_PHY_CONFIG_FIFO_DEPTH_32; - et131x_mii_write(adapter, PHY_CONFIG, reg); - } - - et131x_set_rx_dma_timer(adapter); - et1310_config_mac_regs2(adapter); - } - - if (phydev && phydev->link != adapter->link) { - /* - * Check to see if we are in coma mode and if - * so, disable it because we will not be able - * to read PHY values until we are out. - */ - if (et1310_in_phy_coma(adapter)) - et1310_disable_phy_coma(adapter); - - if (phydev->link) { - adapter->boot_coma = 20; - } else { - dev_warn(&adapter->pdev->dev, - "Link down - cable problem ?\n"); - adapter->boot_coma = 0; - - if (phydev->speed == SPEED_10) { - /* NOTE - Is there a way to query this without - * TruePHY? - * && TRU_QueryCoreType(adapter->hTruePhy, 0) == - * EMI_TRUEPHY_A13O) - */ - u16 register18; - - et131x_mii_read(adapter, PHY_MPHY_CONTROL_REG, - ®ister18); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18 | 0x4); - et131x_mii_write(adapter, PHY_INDEX_REG, - register18 | 0x8402); - et131x_mii_write(adapter, PHY_DATA_REG, - register18 | 511); - et131x_mii_write(adapter, PHY_MPHY_CONTROL_REG, - register18); - } - - /* Free the packets being actively sent & stopped */ - et131x_free_busy_send_packets(adapter); - - /* Re-initialize the send structures */ - et131x_init_send(adapter); - - /* Reset the RFD list and re-start RU */ - et131x_reset_recv(adapter); - - /* - * Bring the device back to the state it was during - * init prior to autonegotiation being complete. This - * way, when we get the auto-neg complete interrupt, - * we can complete init by calling config_mac_regs2. - */ - et131x_soft_reset(adapter); - - /* Setup ET1310 as per the documentation */ - et131x_adapter_setup(adapter); - - /* perform reset of tx/rx */ - et131x_disable_txrx(netdev); - et131x_enable_txrx(netdev); - } - - adapter->link = phydev->link; - - phy_print_status(phydev); - } -} - -static int et131x_mii_probe(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - struct phy_device *phydev = NULL; - - phydev = phy_find_first(adapter->mii_bus); - if (!phydev) { - dev_err(&adapter->pdev->dev, "no PHY found\n"); - return -ENODEV; - } - - phydev = phy_connect(netdev, dev_name(&phydev->dev), - &et131x_adjust_link, 0, PHY_INTERFACE_MODE_MII); - - if (IS_ERR(phydev)) { - dev_err(&adapter->pdev->dev, "Could not attach to PHY\n"); - return PTR_ERR(phydev); - } - - phydev->supported &= (SUPPORTED_10baseT_Half - | SUPPORTED_10baseT_Full - | SUPPORTED_100baseT_Half - | SUPPORTED_100baseT_Full - | SUPPORTED_Autoneg - | SUPPORTED_MII - | SUPPORTED_TP); - - if (adapter->pdev->device != ET131X_PCI_DEVICE_ID_FAST) - phydev->supported |= SUPPORTED_1000baseT_Full; - - phydev->advertising = phydev->supported; - adapter->phydev = phydev; - - dev_info(&adapter->pdev->dev, "attached PHY driver [%s] " - "(mii_bus:phy_addr=%s)\n", - phydev->drv->name, dev_name(&phydev->dev)); - - return 0; -} - -/** - * et131x_adapter_init - * @adapter: pointer to the private adapter struct - * @pdev: pointer to the PCI device - * - * Initialize the data structures for the et131x_adapter object and link - * them together with the platform provided device structures. - */ -static struct et131x_adapter *et131x_adapter_init(struct net_device *netdev, - struct pci_dev *pdev) -{ - static const u8 default_mac[] = { 0x00, 0x05, 0x3d, 0x00, 0x02, 0x00 }; - - struct et131x_adapter *adapter; - - /* Allocate private adapter struct and copy in relevant information */ - adapter = netdev_priv(netdev); - adapter->pdev = pci_dev_get(pdev); - adapter->netdev = netdev; - - /* Do the same for the netdev struct */ - netdev->irq = pdev->irq; - netdev->base_addr = pci_resource_start(pdev, 0); - - /* Initialize spinlocks here */ - spin_lock_init(&adapter->lock); - spin_lock_init(&adapter->tcb_send_qlock); - spin_lock_init(&adapter->tcb_ready_qlock); - spin_lock_init(&adapter->send_hw_lock); - spin_lock_init(&adapter->rcv_lock); - spin_lock_init(&adapter->rcv_pend_lock); - spin_lock_init(&adapter->fbr_lock); - spin_lock_init(&adapter->phy_lock); - - adapter->registry_jumbo_packet = 1514; /* 1514-9216 */ - - /* Set the MAC address to a default */ - memcpy(adapter->addr, default_mac, ETH_ALEN); - - return adapter; -} - -/** - * et131x_pci_setup - Perform device initialization - * @pdev: a pointer to the device's pci_dev structure - * @ent: this device's entry in the pci_device_id table - * - * Returns 0 on success, errno on failure (as defined in errno.h) - * - * Registered in the pci_driver structure, this function is called when the - * PCI subsystem finds a new PCI device which matches the information - * contained in the pci_device_id table. This routine is the equivalent to - * a device insertion routine. - */ -static int __devinit et131x_pci_setup(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - int result; - int pm_cap; - struct net_device *netdev; - struct et131x_adapter *adapter; - int ii; - - result = pci_enable_device(pdev); - if (result) { - dev_err(&pdev->dev, "pci_enable_device() failed\n"); - goto err_out; - } - - /* Perform some basic PCI checks */ - if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { - dev_err(&pdev->dev, "Can't find PCI device's base address\n"); - goto err_disable; - } - - if (pci_request_regions(pdev, DRIVER_NAME)) { - dev_err(&pdev->dev, "Can't get PCI resources\n"); - goto err_disable; - } - - pci_set_master(pdev); - - /* Query PCI for Power Mgmt Capabilities - * - * NOTE: Now reading PowerMgmt in another location; is this still - * needed? - */ - pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM); - if (!pm_cap) { - dev_err(&pdev->dev, - "Cannot find Power Management capabilities\n"); - result = -EIO; - goto err_release_res; - } - - /* Check the DMA addressing support of this device */ - if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { - result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (result) { - dev_err(&pdev->dev, - "Unable to obtain 64 bit DMA for consistent allocations\n"); - goto err_release_res; - } - } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { - result = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (result) { - dev_err(&pdev->dev, - "Unable to obtain 32 bit DMA for consistent allocations\n"); - goto err_release_res; - } - } else { - dev_err(&pdev->dev, "No usable DMA addressing method\n"); - result = -EIO; - goto err_release_res; - } - - /* Allocate netdev and private adapter structs */ - netdev = et131x_device_alloc(); - if (!netdev) { - dev_err(&pdev->dev, "Couldn't alloc netdev struct\n"); - result = -ENOMEM; - goto err_release_res; - } - - SET_NETDEV_DEV(netdev, &pdev->dev); - et131x_set_ethtool_ops(netdev); - - adapter = et131x_adapter_init(netdev, pdev); - - /* Initialise the PCI setup for the device */ - et131x_pci_init(adapter, pdev); - - /* Map the bus-relative registers to system virtual memory */ - adapter->regs = pci_ioremap_bar(pdev, 0); - if (!adapter->regs) { - dev_err(&pdev->dev, "Cannot map device registers\n"); - result = -ENOMEM; - goto err_free_dev; - } - - /* If Phy COMA mode was enabled when we went down, disable it here. */ - writel(ET_PMCSR_INIT, &adapter->regs->global.pm_csr); - - /* Issue a global reset to the et1310 */ - et131x_soft_reset(adapter); - - /* Disable all interrupts (paranoid) */ - et131x_disable_interrupts(adapter); - - /* Allocate DMA memory */ - result = et131x_adapter_memory_alloc(adapter); - if (result) { - dev_err(&pdev->dev, "Could not alloc adapater memory (DMA)\n"); - goto err_iounmap; - } - - /* Init send data structures */ - et131x_init_send(adapter); - - /* Set up the task structure for the ISR's deferred handler */ - INIT_WORK(&adapter->task, et131x_isr_handler); - - /* Copy address into the net_device struct */ - memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN); - - /* Init variable for counting how long we do not have link status */ - adapter->boot_coma = 0; - et1310_disable_phy_coma(adapter); - - /* Setup the mii_bus struct */ - adapter->mii_bus = mdiobus_alloc(); - if (!adapter->mii_bus) { - dev_err(&pdev->dev, "Alloc of mii_bus struct failed\n"); - goto err_mem_free; - } - - adapter->mii_bus->name = "et131x_eth_mii"; - snprintf(adapter->mii_bus->id, MII_BUS_ID_SIZE, "%x", - (adapter->pdev->bus->number << 8) | adapter->pdev->devfn); - adapter->mii_bus->priv = netdev; - adapter->mii_bus->read = et131x_mdio_read; - adapter->mii_bus->write = et131x_mdio_write; - adapter->mii_bus->reset = et131x_mdio_reset; - adapter->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); - if (!adapter->mii_bus->irq) { - dev_err(&pdev->dev, "mii_bus irq allocation failed\n"); - goto err_mdio_free; - } - - for (ii = 0; ii < PHY_MAX_ADDR; ii++) - adapter->mii_bus->irq[ii] = PHY_POLL; - - if (mdiobus_register(adapter->mii_bus)) { - dev_err(&pdev->dev, "failed to register MII bus\n"); - mdiobus_free(adapter->mii_bus); - goto err_mdio_free_irq; - } - - if (et131x_mii_probe(netdev)) { - dev_err(&pdev->dev, "failed to probe MII bus\n"); - goto err_mdio_unregister; - } - - /* Setup et1310 as per the documentation */ - et131x_adapter_setup(adapter); - - /* We can enable interrupts now - * - * NOTE - Because registration of interrupt handler is done in the - * device's open(), defer enabling device interrupts to that - * point - */ - - /* Register the net_device struct with the Linux network layer */ - result = register_netdev(netdev); - if (result != 0) { - dev_err(&pdev->dev, "register_netdev() failed\n"); - goto err_mdio_unregister; - } - - /* Register the net_device struct with the PCI subsystem. Save a copy - * of the PCI config space for this device now that the device has - * been initialized, just in case it needs to be quickly restored. - */ - pci_set_drvdata(pdev, netdev); - pci_save_state(adapter->pdev); - - return result; - -err_mdio_unregister: - mdiobus_unregister(adapter->mii_bus); -err_mdio_free_irq: - kfree(adapter->mii_bus->irq); -err_mdio_free: - mdiobus_free(adapter->mii_bus); -err_mem_free: - et131x_adapter_memory_free(adapter); -err_iounmap: - iounmap(adapter->regs); -err_free_dev: - pci_dev_put(pdev); - free_netdev(netdev); -err_release_res: - pci_release_regions(pdev); -err_disable: - pci_disable_device(pdev); -err_out: - return result; -} - -/** - * et131x_pci_remove - * @pdev: a pointer to the device's pci_dev structure - * - * Registered in the pci_driver structure, this function is called when the - * PCI subsystem detects that a PCI device which matches the information - * contained in the pci_device_id table has been removed. - */ -static void __devexit et131x_pci_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct et131x_adapter *adapter = netdev_priv(netdev); - - unregister_netdev(netdev); - mdiobus_unregister(adapter->mii_bus); - kfree(adapter->mii_bus->irq); - mdiobus_free(adapter->mii_bus); - - et131x_adapter_memory_free(adapter); - iounmap(adapter->regs); - pci_dev_put(pdev); - - free_netdev(netdev); - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -#ifdef CONFIG_PM_SLEEP -static int et131x_suspend(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct net_device *netdev = pci_get_drvdata(pdev); - - if (netif_running(netdev)) { - netif_device_detach(netdev); - et131x_down(netdev); - pci_save_state(pdev); - } - - return 0; -} - -static int et131x_resume(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct net_device *netdev = pci_get_drvdata(pdev); - - if (netif_running(netdev)) { - pci_restore_state(pdev); - et131x_up(netdev); - netif_device_attach(netdev); - } - - return 0; -} - -static SIMPLE_DEV_PM_OPS(et131x_pm_ops, et131x_suspend, et131x_resume); -#define ET131X_PM_OPS (&et131x_pm_ops) -#else -#define ET131X_PM_OPS NULL -#endif - -static struct pci_device_id et131x_pci_table[] __devinitdata = { - {ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_GIG, PCI_ANY_ID, - PCI_ANY_ID, 0, 0, 0UL}, - {ET131X_PCI_VENDOR_ID, ET131X_PCI_DEVICE_ID_FAST, PCI_ANY_ID, - PCI_ANY_ID, 0, 0, 0UL}, - {0,} -}; - -MODULE_DEVICE_TABLE(pci, et131x_pci_table); - -static struct pci_driver et131x_driver = { - .name = DRIVER_NAME, - .id_table = et131x_pci_table, - .probe = et131x_pci_setup, - .remove = __devexit_p(et131x_pci_remove), - .driver.pm = ET131X_PM_OPS, -}; - -/** - * et131x_init_module - The "main" entry point called on driver initialization - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -static int __init et131x_init_module(void) -{ - return pci_register_driver(&et131x_driver); -} - -/** - * et131x_cleanup_module - The entry point called on driver cleanup - */ -static void __exit et131x_cleanup_module(void) -{ - pci_unregister_driver(&et131x_driver); -} - -module_init(et131x_init_module); -module_exit(et131x_cleanup_module); - -MODULE_AUTHOR("Victor Soriano "); -MODULE_AUTHOR("Mark Einon "); -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_DESCRIPTION("10/100/1000 Base-T Ethernet Driver " - "for the ET1310 by Agere Systems"); diff --git a/drivers/staging/et131x/et131x_isr.c b/drivers/staging/et131x/et131x_isr.c deleted file mode 100644 index cf8665b12911..000000000000 --- a/drivers/staging/et131x/et131x_isr.c +++ /dev/null @@ -1,442 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et131x_isr.c - File which contains the ISR, ISR handler, and related routines - * for processing interrupts from the device. - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et131x_adapter.h" -#include "et131x.h" - -/* - * For interrupts, normal running is: - * rxdma_xfr_done, phy_interrupt, mac_stat_interrupt, - * watchdog_interrupt & txdma_xfer_done - * - * In both cases, when flow control is enabled for either Tx or bi-direction, - * we additional enable rx_fbr0_low and rx_fbr1_low, so we know when the - * buffer rings are running low. - */ -#define INT_MASK_DISABLE 0xffffffff - -/* NOTE: Masking out MAC_STAT Interrupt for now... - * #define INT_MASK_ENABLE 0xfff6bf17 - * #define INT_MASK_ENABLE_NO_FLOW 0xfff6bfd7 - */ -#define INT_MASK_ENABLE 0xfffebf17 -#define INT_MASK_ENABLE_NO_FLOW 0xfffebfd7 - - -/** - * et131x_enable_interrupts - enable interrupt - * @adapter: et131x device - * - * Enable the appropriate interrupts on the ET131x according to our - * configuration - */ - -void et131x_enable_interrupts(struct et131x_adapter *adapter) -{ - u32 mask; - - /* Enable all global interrupts */ - if (adapter->flowcontrol == FLOW_TXONLY || - adapter->flowcontrol == FLOW_BOTH) - mask = INT_MASK_ENABLE; - else - mask = INT_MASK_ENABLE_NO_FLOW; - - writel(mask, &adapter->regs->global.int_mask); -} - -/** - * et131x_disable_interrupts - interrupt disable - * @adapter: et131x device - * - * Block all interrupts from the et131x device at the device itself - */ - -void et131x_disable_interrupts(struct et131x_adapter *adapter) -{ - /* Disable all global interrupts */ - writel(INT_MASK_DISABLE, &adapter->regs->global.int_mask); -} - - -/** - * et131x_isr - The Interrupt Service Routine for the driver. - * @irq: the IRQ on which the interrupt was received. - * @dev_id: device-specific info (here a pointer to a net_device struct) - * - * Returns a value indicating if the interrupt was handled. - */ - -irqreturn_t et131x_isr(int irq, void *dev_id) -{ - bool handled = true; - struct net_device *netdev = (struct net_device *)dev_id; - struct et131x_adapter *adapter = NULL; - u32 status; - - if (!netif_device_present(netdev)) { - handled = false; - goto out; - } - - adapter = netdev_priv(netdev); - - /* If the adapter is in low power state, then it should not - * recognize any interrupt - */ - - /* Disable Device Interrupts */ - et131x_disable_interrupts(adapter); - - /* Get a copy of the value in the interrupt status register - * so we can process the interrupting section - */ - status = readl(&adapter->regs->global.int_status); - - if (adapter->flowcontrol == FLOW_TXONLY || - adapter->flowcontrol == FLOW_BOTH) { - status &= ~INT_MASK_ENABLE; - } else { - status &= ~INT_MASK_ENABLE_NO_FLOW; - } - - /* Make sure this is our interrupt */ - if (!status) { - handled = false; - et131x_enable_interrupts(adapter); - goto out; - } - - /* This is our interrupt, so process accordingly */ - - if (status & ET_INTR_WATCHDOG) { - struct tcb *tcb = adapter->tx_ring.send_head; - - if (tcb) - if (++tcb->stale > 1) - status |= ET_INTR_TXDMA_ISR; - - if (adapter->rx_ring.unfinished_receives) - status |= ET_INTR_RXDMA_XFR_DONE; - else if (tcb == NULL) - writel(0, &adapter->regs->global.watchdog_timer); - - status &= ~ET_INTR_WATCHDOG; - } - - if (status == 0) { - /* This interrupt has in some way been "handled" by - * the ISR. Either it was a spurious Rx interrupt, or - * it was a Tx interrupt that has been filtered by - * the ISR. - */ - et131x_enable_interrupts(adapter); - goto out; - } - - /* We need to save the interrupt status value for use in our - * DPC. We will clear the software copy of that in that - * routine. - */ - adapter->stats.interrupt_status = status; - - /* Schedule the ISR handler as a bottom-half task in the - * kernel's tq_immediate queue, and mark the queue for - * execution - */ - schedule_work(&adapter->task); -out: - return IRQ_RETVAL(handled); -} - -/** - * et131x_isr_handler - The ISR handler - * @p_adapter, a pointer to the device's private adapter structure - * - * scheduled to run in a deferred context by the ISR. This is where the ISR's - * work actually gets done. - */ -void et131x_isr_handler(struct work_struct *work) -{ - struct et131x_adapter *adapter = - container_of(work, struct et131x_adapter, task); - u32 status = adapter->stats.interrupt_status; - struct address_map __iomem *iomem = adapter->regs; - - /* - * These first two are by far the most common. Once handled, we clear - * their two bits in the status word. If the word is now zero, we - * exit. - */ - /* Handle all the completed Transmit interrupts */ - if (status & ET_INTR_TXDMA_ISR) - et131x_handle_send_interrupt(adapter); - - /* Handle all the completed Receives interrupts */ - if (status & ET_INTR_RXDMA_XFR_DONE) - et131x_handle_recv_interrupt(adapter); - - status &= 0xffffffd7; - - if (status) { - /* Handle the TXDMA Error interrupt */ - if (status & ET_INTR_TXDMA_ERR) { - u32 txdma_err; - - /* Following read also clears the register (COR) */ - txdma_err = readl(&iomem->txdma.tx_dma_error); - - dev_warn(&adapter->pdev->dev, - "TXDMA_ERR interrupt, error = %d\n", - txdma_err); - } - - /* Handle Free Buffer Ring 0 and 1 Low interrupt */ - if (status & - (ET_INTR_RXDMA_FB_R0_LOW | ET_INTR_RXDMA_FB_R1_LOW)) { - /* - * This indicates the number of unused buffers in - * RXDMA free buffer ring 0 is <= the limit you - * programmed. Free buffer resources need to be - * returned. Free buffers are consumed as packets - * are passed from the network to the host. The host - * becomes aware of the packets from the contents of - * the packet status ring. This ring is queried when - * the packet done interrupt occurs. Packets are then - * passed to the OS. When the OS is done with the - * packets the resources can be returned to the - * ET1310 for re-use. This interrupt is one method of - * returning resources. - */ - - /* If the user has flow control on, then we will - * send a pause packet, otherwise just exit - */ - if (adapter->flowcontrol == FLOW_TXONLY || - adapter->flowcontrol == FLOW_BOTH) { - u32 pm_csr; - - /* Tell the device to send a pause packet via - * the back pressure register (bp req and - * bp xon/xoff) - */ - pm_csr = readl(&iomem->global.pm_csr); - if (!et1310_in_phy_coma(adapter)) - writel(3, &iomem->txmac.bp_ctrl); - } - } - - /* Handle Packet Status Ring Low Interrupt */ - if (status & ET_INTR_RXDMA_STAT_LOW) { - - /* - * Same idea as with the two Free Buffer Rings. - * Packets going from the network to the host each - * consume a free buffer resource and a packet status - * resource. These resoures are passed to the OS. - * When the OS is done with the resources, they need - * to be returned to the ET1310. This is one method - * of returning the resources. - */ - } - - /* Handle RXDMA Error Interrupt */ - if (status & ET_INTR_RXDMA_ERR) { - /* - * The rxdma_error interrupt is sent when a time-out - * on a request issued by the JAGCore has occurred or - * a completion is returned with an un-successful - * status. In both cases the request is considered - * complete. The JAGCore will automatically re-try the - * request in question. Normally information on events - * like these are sent to the host using the "Advanced - * Error Reporting" capability. This interrupt is - * another way of getting similar information. The - * only thing required is to clear the interrupt by - * reading the ISR in the global resources. The - * JAGCore will do a re-try on the request. Normally - * you should never see this interrupt. If you start - * to see this interrupt occurring frequently then - * something bad has occurred. A reset might be the - * thing to do. - */ - /* TRAP();*/ - - dev_warn(&adapter->pdev->dev, - "RxDMA_ERR interrupt, error %x\n", - readl(&iomem->txmac.tx_test)); - } - - /* Handle the Wake on LAN Event */ - if (status & ET_INTR_WOL) { - /* - * This is a secondary interrupt for wake on LAN. - * The driver should never see this, if it does, - * something serious is wrong. We will TRAP the - * message when we are in DBG mode, otherwise we - * will ignore it. - */ - dev_err(&adapter->pdev->dev, "WAKE_ON_LAN interrupt\n"); - } - - /* Let's move on to the TxMac */ - if (status & ET_INTR_TXMAC) { - u32 err = readl(&iomem->txmac.err); - - /* - * When any of the errors occur and TXMAC generates - * an interrupt to report these errors, it usually - * means that TXMAC has detected an error in the data - * stream retrieved from the on-chip Tx Q. All of - * these errors are catastrophic and TXMAC won't be - * able to recover data when these errors occur. In - * a nutshell, the whole Tx path will have to be reset - * and re-configured afterwards. - */ - dev_warn(&adapter->pdev->dev, - "TXMAC interrupt, error 0x%08x\n", - err); - - /* If we are debugging, we want to see this error, - * otherwise we just want the device to be reset and - * continue - */ - } - - /* Handle RXMAC Interrupt */ - if (status & ET_INTR_RXMAC) { - /* - * These interrupts are catastrophic to the device, - * what we need to do is disable the interrupts and - * set the flag to cause us to reset so we can solve - * this issue. - */ - /* MP_SET_FLAG( adapter, - fMP_ADAPTER_HARDWARE_ERROR); */ - - dev_warn(&adapter->pdev->dev, - "RXMAC interrupt, error 0x%08x. Requesting reset\n", - readl(&iomem->rxmac.err_reg)); - - dev_warn(&adapter->pdev->dev, - "Enable 0x%08x, Diag 0x%08x\n", - readl(&iomem->rxmac.ctrl), - readl(&iomem->rxmac.rxq_diag)); - - /* - * If we are debugging, we want to see this error, - * otherwise we just want the device to be reset and - * continue - */ - } - - /* Handle MAC_STAT Interrupt */ - if (status & ET_INTR_MAC_STAT) { - /* - * This means at least one of the un-masked counters - * in the MAC_STAT block has rolled over. Use this - * to maintain the top, software managed bits of the - * counter(s). - */ - et1310_handle_macstat_interrupt(adapter); - } - - /* Handle SLV Timeout Interrupt */ - if (status & ET_INTR_SLV_TIMEOUT) { - /* - * This means a timeout has occurred on a read or - * write request to one of the JAGCore registers. The - * Global Resources block has terminated the request - * and on a read request, returned a "fake" value. - * The most likely reasons are: Bad Address or the - * addressed module is in a power-down state and - * can't respond. - */ - } - } - et131x_enable_interrupts(adapter); -} diff --git a/drivers/staging/et131x/et131x_netdev.c b/drivers/staging/et131x/et131x_netdev.c deleted file mode 100644 index 62070cff76f1..000000000000 --- a/drivers/staging/et131x/et131x_netdev.c +++ /dev/null @@ -1,662 +0,0 @@ -/* - * Agere Systems Inc. - * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Copyright (c) 2011 Mark Einon - * - *------------------------------------------------------------------------------ - * - * et131x_netdev.c - Routines and data required by all Linux network devices. - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2005 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - */ - -#include "et131x_defs.h" - -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "et1310_phy.h" -#include "et1310_tx.h" -#include "et131x_adapter.h" -#include "et131x.h" - -/** - * et131x_stats - Return the current device statistics. - * @netdev: device whose stats are being queried - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -static struct net_device_stats *et131x_stats(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - struct net_device_stats *stats = &adapter->net_stats; - struct ce_stats *devstat = &adapter->stats; - - stats->rx_errors = devstat->rx_length_errs + - devstat->rx_align_errs + - devstat->rx_crc_errs + - devstat->rx_code_violations + - devstat->rx_other_errs; - stats->tx_errors = devstat->tx_max_pkt_errs; - stats->multicast = devstat->multicast_pkts_rcvd; - stats->collisions = devstat->tx_collisions; - - stats->rx_length_errors = devstat->rx_length_errs; - stats->rx_over_errors = devstat->rx_overflows; - stats->rx_crc_errors = devstat->rx_crc_errs; - - /* NOTE: These stats don't have corresponding values in CE_STATS, - * so we're going to have to update these directly from within the - * TX/RX code - */ - /* stats->rx_bytes = 20; devstat->; */ - /* stats->tx_bytes = 20; devstat->; */ - /* stats->rx_dropped = devstat->; */ - /* stats->tx_dropped = devstat->; */ - - /* NOTE: Not used, can't find analogous statistics */ - /* stats->rx_frame_errors = devstat->; */ - /* stats->rx_fifo_errors = devstat->; */ - /* stats->rx_missed_errors = devstat->; */ - - /* stats->tx_aborted_errors = devstat->; */ - /* stats->tx_carrier_errors = devstat->; */ - /* stats->tx_fifo_errors = devstat->; */ - /* stats->tx_heartbeat_errors = devstat->; */ - /* stats->tx_window_errors = devstat->; */ - return stats; -} - -/** - * et131x_enable_txrx - Enable tx/rx queues - * @netdev: device to be enabled - */ -void et131x_enable_txrx(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - /* Enable the Tx and Rx DMA engines (if not already enabled) */ - et131x_rx_dma_enable(adapter); - et131x_tx_dma_enable(adapter); - - /* Enable device interrupts */ - if (adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE) - et131x_enable_interrupts(adapter); - - /* We're ready to move some data, so start the queue */ - netif_start_queue(netdev); -} - -/** - * et131x_disable_txrx - Disable tx/rx queues - * @netdev: device to be disabled - */ -void et131x_disable_txrx(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - /* First thing is to stop the queue */ - netif_stop_queue(netdev); - - /* Stop the Tx and Rx DMA engines */ - et131x_rx_dma_disable(adapter); - et131x_tx_dma_disable(adapter); - - /* Disable device interrupts */ - et131x_disable_interrupts(adapter); -} - -/** - * et131x_up - Bring up a device for use. - * @netdev: device to be opened - */ -void et131x_up(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - et131x_enable_txrx(netdev); - phy_start(adapter->phydev); -} - -/** - * et131x_open - Open the device for use. - * @netdev: device to be opened - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -int et131x_open(struct net_device *netdev) -{ - int result = 0; - struct et131x_adapter *adapter = netdev_priv(netdev); - - /* Start the timer to track NIC errors */ - init_timer(&adapter->error_timer); - adapter->error_timer.expires = jiffies + TX_ERROR_PERIOD * HZ / 1000; - adapter->error_timer.function = et131x_error_timer_handler; - adapter->error_timer.data = (unsigned long)adapter; - add_timer(&adapter->error_timer); - - /* Register our IRQ */ - result = request_irq(netdev->irq, et131x_isr, IRQF_SHARED, - netdev->name, netdev); - if (result) { - dev_err(&adapter->pdev->dev, "could not register IRQ %d\n", - netdev->irq); - return result; - } - - adapter->flags |= fMP_ADAPTER_INTERRUPT_IN_USE; - - et131x_up(netdev); - - return result; -} - -/** - * et131x_down - Bring down the device - * @netdev: device to be broght down - */ -void et131x_down(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - /* Save the timestamp for the TX watchdog, prevent a timeout */ - netdev->trans_start = jiffies; - - phy_stop(adapter->phydev); - et131x_disable_txrx(netdev); -} - -/** - * et131x_close - Close the device - * @netdev: device to be closed - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -int et131x_close(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - et131x_down(netdev); - - adapter->flags &= ~fMP_ADAPTER_INTERRUPT_IN_USE; - free_irq(netdev->irq, netdev); - - /* Stop the error timer */ - return del_timer_sync(&adapter->error_timer); -} - -/** - * et131x_ioctl - The I/O Control handler for the driver - * @netdev: device on which the control request is being made - * @reqbuf: a pointer to the IOCTL request buffer - * @cmd: the IOCTL command code - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -static int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf, int cmd) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - - if (!adapter->phydev) - return -EINVAL; - - return phy_mii_ioctl(adapter->phydev, reqbuf, cmd); -} - -/** - * et131x_set_packet_filter - Configures the Rx Packet filtering on the device - * @adapter: pointer to our private adapter structure - * - * FIXME: lot of dups with MAC code - * - * Returns 0 on success, errno on failure - */ -static int et131x_set_packet_filter(struct et131x_adapter *adapter) -{ - int status = 0; - uint32_t filter = adapter->packet_filter; - u32 ctrl; - u32 pf_ctrl; - - ctrl = readl(&adapter->regs->rxmac.ctrl); - pf_ctrl = readl(&adapter->regs->rxmac.pf_ctrl); - - /* Default to disabled packet filtering. Enable it in the individual - * case statements that require the device to filter something - */ - ctrl |= 0x04; - - /* Set us to be in promiscuous mode so we receive everything, this - * is also true when we get a packet filter of 0 - */ - if ((filter & ET131X_PACKET_TYPE_PROMISCUOUS) || filter == 0) - pf_ctrl &= ~7; /* Clear filter bits */ - else { - /* - * Set us up with Multicast packet filtering. Three cases are - * possible - (1) we have a multi-cast list, (2) we receive ALL - * multicast entries or (3) we receive none. - */ - if (filter & ET131X_PACKET_TYPE_ALL_MULTICAST) - pf_ctrl &= ~2; /* Multicast filter bit */ - else { - et1310_setup_device_for_multicast(adapter); - pf_ctrl |= 2; - ctrl &= ~0x04; - } - - /* Set us up with Unicast packet filtering */ - if (filter & ET131X_PACKET_TYPE_DIRECTED) { - et1310_setup_device_for_unicast(adapter); - pf_ctrl |= 4; - ctrl &= ~0x04; - } - - /* Set us up with Broadcast packet filtering */ - if (filter & ET131X_PACKET_TYPE_BROADCAST) { - pf_ctrl |= 1; /* Broadcast filter bit */ - ctrl &= ~0x04; - } else - pf_ctrl &= ~1; - - /* Setup the receive mac configuration registers - Packet - * Filter control + the enable / disable for packet filter - * in the control reg. - */ - writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl); - writel(ctrl, &adapter->regs->rxmac.ctrl); - } - return status; -} - -/** - * et131x_multicast - The handler to configure multicasting on the interface - * @netdev: a pointer to a net_device struct representing the device - */ -static void et131x_multicast(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - uint32_t packet_filter = 0; - unsigned long flags; - struct netdev_hw_addr *ha; - int i; - - spin_lock_irqsave(&adapter->lock, flags); - - /* Before we modify the platform-independent filter flags, store them - * locally. This allows us to determine if anything's changed and if - * we even need to bother the hardware - */ - packet_filter = adapter->packet_filter; - - /* Clear the 'multicast' flag locally; because we only have a single - * flag to check multicast, and multiple multicast addresses can be - * set, this is the easiest way to determine if more than one - * multicast address is being set. - */ - packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST; - - /* Check the net_device flags and set the device independent flags - * accordingly - */ - - if (netdev->flags & IFF_PROMISC) - adapter->packet_filter |= ET131X_PACKET_TYPE_PROMISCUOUS; - else - adapter->packet_filter &= ~ET131X_PACKET_TYPE_PROMISCUOUS; - - if (netdev->flags & IFF_ALLMULTI) - adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST; - - if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST) - adapter->packet_filter |= ET131X_PACKET_TYPE_ALL_MULTICAST; - - if (netdev_mc_count(netdev) < 1) { - adapter->packet_filter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST; - adapter->packet_filter &= ~ET131X_PACKET_TYPE_MULTICAST; - } else - adapter->packet_filter |= ET131X_PACKET_TYPE_MULTICAST; - - /* Set values in the private adapter struct */ - i = 0; - netdev_for_each_mc_addr(ha, netdev) { - if (i == NIC_MAX_MCAST_LIST) - break; - memcpy(adapter->multicast_list[i++], ha->addr, ETH_ALEN); - } - adapter->multicast_addr_count = i; - - /* Are the new flags different from the previous ones? If not, then no - * action is required - * - * NOTE - This block will always update the multicast_list with the - * hardware, even if the addresses aren't the same. - */ - if (packet_filter != adapter->packet_filter) { - /* Call the device's filter function */ - et131x_set_packet_filter(adapter); - } - spin_unlock_irqrestore(&adapter->lock, flags); -} - -/** - * et131x_tx - The handler to tx a packet on the device - * @skb: data to be Tx'd - * @netdev: device on which data is to be Tx'd - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -static int et131x_tx(struct sk_buff *skb, struct net_device *netdev) -{ - int status = 0; - - /* Save the timestamp for the TX timeout watchdog */ - netdev->trans_start = jiffies; - - /* Call the device-specific data Tx routine */ - status = et131x_send_packets(skb, netdev); - - /* Check status and manage the netif queue if necessary */ - if (status != 0) { - if (status == -ENOMEM) { - /* Put the queue to sleep until resources are - * available - */ - netif_stop_queue(netdev); - status = NETDEV_TX_BUSY; - } else { - status = NETDEV_TX_OK; - } - } - return status; -} - -/** - * et131x_tx_timeout - Timeout handler - * @netdev: a pointer to a net_device struct representing the device - * - * The handler called when a Tx request times out. The timeout period is - * specified by the 'tx_timeo" element in the net_device structure (see - * et131x_alloc_device() to see how this value is set). - */ -static void et131x_tx_timeout(struct net_device *netdev) -{ - struct et131x_adapter *adapter = netdev_priv(netdev); - struct tcb *tcb; - unsigned long flags; - - /* If the device is closed, ignore the timeout */ - if (~(adapter->flags & fMP_ADAPTER_INTERRUPT_IN_USE)) - return; - - /* Any nonrecoverable hardware error? - * Checks adapter->flags for any failure in phy reading - */ - if (adapter->flags & fMP_ADAPTER_NON_RECOVER_ERROR) - return; - - /* Hardware failure? */ - if (adapter->flags & fMP_ADAPTER_HARDWARE_ERROR) { - dev_err(&adapter->pdev->dev, "hardware error - reset\n"); - return; - } - - /* Is send stuck? */ - spin_lock_irqsave(&adapter->tcb_send_qlock, flags); - - tcb = adapter->tx_ring.send_head; - - if (tcb != NULL) { - tcb->count++; - - if (tcb->count > NIC_SEND_HANG_THRESHOLD) { - spin_unlock_irqrestore(&adapter->tcb_send_qlock, - flags); - - dev_warn(&adapter->pdev->dev, - "Send stuck - reset. tcb->WrIndex %x, flags 0x%08x\n", - tcb->index, - tcb->flags); - - adapter->net_stats.tx_errors++; - - /* perform reset of tx/rx */ - et131x_disable_txrx(netdev); - et131x_enable_txrx(netdev); - return; - } - } - - spin_unlock_irqrestore(&adapter->tcb_send_qlock, flags); -} - -/** - * et131x_change_mtu - The handler called to change the MTU for the device - * @netdev: device whose MTU is to be changed - * @new_mtu: the desired MTU - * - * Returns 0 on success, errno on failure (as defined in errno.h) - */ -static int et131x_change_mtu(struct net_device *netdev, int new_mtu) -{ - int result = 0; - struct et131x_adapter *adapter = netdev_priv(netdev); - - /* Make sure the requested MTU is valid */ - if (new_mtu < 64 || new_mtu > 9216) - return -EINVAL; - - et131x_disable_txrx(netdev); - et131x_handle_send_interrupt(adapter); - et131x_handle_recv_interrupt(adapter); - - /* Set the new MTU */ - netdev->mtu = new_mtu; - - /* Free Rx DMA memory */ - et131x_adapter_memory_free(adapter); - - /* Set the config parameter for Jumbo Packet support */ - adapter->registry_jumbo_packet = new_mtu + 14; - et131x_soft_reset(adapter); - - /* Alloc and init Rx DMA memory */ - result = et131x_adapter_memory_alloc(adapter); - if (result != 0) { - dev_warn(&adapter->pdev->dev, - "Change MTU failed; couldn't re-alloc DMA memory\n"); - return result; - } - - et131x_init_send(adapter); - - et131x_hwaddr_init(adapter); - memcpy(netdev->dev_addr, adapter->addr, ETH_ALEN); - - /* Init the device with the new settings */ - et131x_adapter_setup(adapter); - - et131x_enable_txrx(netdev); - - return result; -} - -/** - * et131x_set_mac_addr - handler to change the MAC address for the device - * @netdev: device whose MAC is to be changed - * @new_mac: the desired MAC address - * - * Returns 0 on success, errno on failure (as defined in errno.h) - * - * IMPLEMENTED BY : blux http://berndlux.de 22.01.2007 21:14 - */ -static int et131x_set_mac_addr(struct net_device *netdev, void *new_mac) -{ - int result = 0; - struct et131x_adapter *adapter = netdev_priv(netdev); - struct sockaddr *address = new_mac; - - /* begin blux */ - - if (adapter == NULL) - return -ENODEV; - - /* Make sure the requested MAC is valid */ - if (!is_valid_ether_addr(address->sa_data)) - return -EINVAL; - - et131x_disable_txrx(netdev); - et131x_handle_send_interrupt(adapter); - et131x_handle_recv_interrupt(adapter); - - /* Set the new MAC */ - /* netdev->set_mac_address = &new_mac; */ - - memcpy(netdev->dev_addr, address->sa_data, netdev->addr_len); - - printk(KERN_INFO "%s: Setting MAC address to %pM\n", - netdev->name, netdev->dev_addr); - - /* Free Rx DMA memory */ - et131x_adapter_memory_free(adapter); - - et131x_soft_reset(adapter); - - /* Alloc and init Rx DMA memory */ - result = et131x_adapter_memory_alloc(adapter); - if (result != 0) { - dev_err(&adapter->pdev->dev, - "Change MAC failed; couldn't re-alloc DMA memory\n"); - return result; - } - - et131x_init_send(adapter); - - et131x_hwaddr_init(adapter); - - /* Init the device with the new settings */ - et131x_adapter_setup(adapter); - - et131x_enable_txrx(netdev); - - return result; -} - -static const struct net_device_ops et131x_netdev_ops = { - .ndo_open = et131x_open, - .ndo_stop = et131x_close, - .ndo_start_xmit = et131x_tx, - .ndo_set_multicast_list = et131x_multicast, - .ndo_tx_timeout = et131x_tx_timeout, - .ndo_change_mtu = et131x_change_mtu, - .ndo_set_mac_address = et131x_set_mac_addr, - .ndo_validate_addr = eth_validate_addr, - .ndo_get_stats = et131x_stats, - .ndo_do_ioctl = et131x_ioctl, -}; - -/** - * et131x_device_alloc - * - * Returns pointer to the allocated and initialized net_device struct for - * this device. - * - * Create instances of net_device and wl_private for the new adapter and - * register the device's entry points in the net_device structure. - */ -struct net_device *et131x_device_alloc(void) -{ - struct net_device *netdev; - - /* Alloc net_device and adapter structs */ - netdev = alloc_etherdev(sizeof(struct et131x_adapter)); - - if (!netdev) { - printk(KERN_ERR "et131x: Alloc of net_device struct failed\n"); - return NULL; - } - - /* - * Setup the function registration table (and other data) for a - * net_device - */ - netdev->watchdog_timeo = ET131X_TX_TIMEOUT; - netdev->netdev_ops = &et131x_netdev_ops; - - /* Poll? */ - /* netdev->poll = &et131x_poll; */ - /* netdev->poll_controller = &et131x_poll_controller; */ - return netdev; -} - -- 2.34.1