Rename sdio_host.h to sdio.h and dhd_sdio.c to sdio.c.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
flowring.o \
msgbuf.o
brcmfmac-$(CONFIG_BRCMFMAC_SDIO) += \
- dhd_sdio.o \
+ sdio.o \
bcmsdh.o
brcmfmac-$(CONFIG_BRCMFMAC_USB) += \
usb.o
#include "chip.h"
#include "bus.h"
#include "debug.h"
-#include "sdio_host.h"
+#include "sdio.h"
#include "of.h"
#define SDIOH_API_ACCESS_RETRY_LIMIT 2
+++ /dev/null
-/*
- * Copyright (c) 2010 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/kthread.h>
-#include <linux/printk.h>
-#include <linux/pci_ids.h>
-#include <linux/netdevice.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/sdio_ids.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/mmc/card.h>
-#include <linux/semaphore.h>
-#include <linux/firmware.h>
-#include <linux/module.h>
-#include <linux/bcma/bcma.h>
-#include <linux/debugfs.h>
-#include <linux/vmalloc.h>
-#include <linux/platform_data/brcmfmac-sdio.h>
-#include <linux/moduleparam.h>
-#include <asm/unaligned.h>
-#include <defs.h>
-#include <brcmu_wifi.h>
-#include <brcmu_utils.h>
-#include <brcm_hw_ids.h>
-#include <soc.h>
-#include "sdio_host.h"
-#include "chip.h"
-#include "firmware.h"
-
-#define DCMD_RESP_TIMEOUT 2000 /* In milli second */
-
-#ifdef DEBUG
-
-#define BRCMF_TRAP_INFO_SIZE 80
-
-#define CBUF_LEN (128)
-
-/* Device console log buffer state */
-#define CONSOLE_BUFFER_MAX 2024
-
-struct rte_log_le {
- __le32 buf; /* Can't be pointer on (64-bit) hosts */
- __le32 buf_size;
- __le32 idx;
- char *_buf_compat; /* Redundant pointer for backward compat. */
-};
-
-struct rte_console {
- /* Virtual UART
- * When there is no UART (e.g. Quickturn),
- * the host should write a complete
- * input line directly into cbuf and then write
- * the length into vcons_in.
- * This may also be used when there is a real UART
- * (at risk of conflicting with
- * the real UART). vcons_out is currently unused.
- */
- uint vcons_in;
- uint vcons_out;
-
- /* Output (logging) buffer
- * Console output is written to a ring buffer log_buf at index log_idx.
- * The host may read the output when it sees log_idx advance.
- * Output will be lost if the output wraps around faster than the host
- * polls.
- */
- struct rte_log_le log_le;
-
- /* Console input line buffer
- * Characters are read one at a time into cbuf
- * until <CR> is received, then
- * the buffer is processed as a command line.
- * Also used for virtual UART.
- */
- uint cbuf_idx;
- char cbuf[CBUF_LEN];
-};
-
-#endif /* DEBUG */
-#include <chipcommon.h>
-
-#include "bus.h"
-#include "debug.h"
-#include "tracepoint.h"
-
-#define TXQLEN 2048 /* bulk tx queue length */
-#define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */
-#define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */
-#define PRIOMASK 7
-
-#define TXRETRIES 2 /* # of retries for tx frames */
-
-#define BRCMF_RXBOUND 50 /* Default for max rx frames in
- one scheduling */
-
-#define BRCMF_TXBOUND 20 /* Default for max tx frames in
- one scheduling */
-
-#define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */
-
-#define MEMBLOCK 2048 /* Block size used for downloading
- of dongle image */
-#define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold
- biggest possible glom */
-
-#define BRCMF_FIRSTREAD (1 << 6)
-
-
-/* SBSDIO_DEVICE_CTL */
-
-/* 1: device will assert busy signal when receiving CMD53 */
-#define SBSDIO_DEVCTL_SETBUSY 0x01
-/* 1: assertion of sdio interrupt is synchronous to the sdio clock */
-#define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02
-/* 1: mask all interrupts to host except the chipActive (rev 8) */
-#define SBSDIO_DEVCTL_CA_INT_ONLY 0x04
-/* 1: isolate internal sdio signals, put external pads in tri-state; requires
- * sdio bus power cycle to clear (rev 9) */
-#define SBSDIO_DEVCTL_PADS_ISO 0x08
-/* Force SD->SB reset mapping (rev 11) */
-#define SBSDIO_DEVCTL_SB_RST_CTL 0x30
-/* Determined by CoreControl bit */
-#define SBSDIO_DEVCTL_RST_CORECTL 0x00
-/* Force backplane reset */
-#define SBSDIO_DEVCTL_RST_BPRESET 0x10
-/* Force no backplane reset */
-#define SBSDIO_DEVCTL_RST_NOBPRESET 0x20
-
-/* direct(mapped) cis space */
-
-/* MAPPED common CIS address */
-#define SBSDIO_CIS_BASE_COMMON 0x1000
-/* maximum bytes in one CIS */
-#define SBSDIO_CIS_SIZE_LIMIT 0x200
-/* cis offset addr is < 17 bits */
-#define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF
-
-/* manfid tuple length, include tuple, link bytes */
-#define SBSDIO_CIS_MANFID_TUPLE_LEN 6
-
-#define CORE_BUS_REG(base, field) \
- (base + offsetof(struct sdpcmd_regs, field))
-
-/* SDIO function 1 register CHIPCLKCSR */
-/* Force ALP request to backplane */
-#define SBSDIO_FORCE_ALP 0x01
-/* Force HT request to backplane */
-#define SBSDIO_FORCE_HT 0x02
-/* Force ILP request to backplane */
-#define SBSDIO_FORCE_ILP 0x04
-/* Make ALP ready (power up xtal) */
-#define SBSDIO_ALP_AVAIL_REQ 0x08
-/* Make HT ready (power up PLL) */
-#define SBSDIO_HT_AVAIL_REQ 0x10
-/* Squelch clock requests from HW */
-#define SBSDIO_FORCE_HW_CLKREQ_OFF 0x20
-/* Status: ALP is ready */
-#define SBSDIO_ALP_AVAIL 0x40
-/* Status: HT is ready */
-#define SBSDIO_HT_AVAIL 0x80
-#define SBSDIO_CSR_MASK 0x1F
-#define SBSDIO_AVBITS (SBSDIO_HT_AVAIL | SBSDIO_ALP_AVAIL)
-#define SBSDIO_ALPAV(regval) ((regval) & SBSDIO_AVBITS)
-#define SBSDIO_HTAV(regval) (((regval) & SBSDIO_AVBITS) == SBSDIO_AVBITS)
-#define SBSDIO_ALPONLY(regval) (SBSDIO_ALPAV(regval) && !SBSDIO_HTAV(regval))
-#define SBSDIO_CLKAV(regval, alponly) \
- (SBSDIO_ALPAV(regval) && (alponly ? 1 : SBSDIO_HTAV(regval)))
-
-/* intstatus */
-#define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */
-#define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */
-#define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */
-#define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */
-#define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */
-#define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */
-#define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */
-#define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */
-#define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */
-#define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */
-#define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */
-#define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */
-#define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */
-#define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */
-#define I_PC (1 << 10) /* descriptor error */
-#define I_PD (1 << 11) /* data error */
-#define I_DE (1 << 12) /* Descriptor protocol Error */
-#define I_RU (1 << 13) /* Receive descriptor Underflow */
-#define I_RO (1 << 14) /* Receive fifo Overflow */
-#define I_XU (1 << 15) /* Transmit fifo Underflow */
-#define I_RI (1 << 16) /* Receive Interrupt */
-#define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */
-#define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */
-#define I_XI (1 << 24) /* Transmit Interrupt */
-#define I_RF_TERM (1 << 25) /* Read Frame Terminate */
-#define I_WF_TERM (1 << 26) /* Write Frame Terminate */
-#define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */
-#define I_SBINT (1 << 28) /* sbintstatus Interrupt */
-#define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */
-#define I_SRESET (1 << 30) /* CCCR RES interrupt */
-#define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */
-#define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU)
-#define I_DMA (I_RI | I_XI | I_ERRORS)
-
-/* corecontrol */
-#define CC_CISRDY (1 << 0) /* CIS Ready */
-#define CC_BPRESEN (1 << 1) /* CCCR RES signal */
-#define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */
-#define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */
-#define CC_XMTDATAAVAIL_MODE (1 << 4)
-#define CC_XMTDATAAVAIL_CTRL (1 << 5)
-
-/* SDA_FRAMECTRL */
-#define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */
-#define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */
-#define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */
-#define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */
-
-/*
- * Software allocation of To SB Mailbox resources
- */
-
-/* tosbmailbox bits corresponding to intstatus bits */
-#define SMB_NAK (1 << 0) /* Frame NAK */
-#define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */
-#define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */
-#define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */
-
-/* tosbmailboxdata */
-#define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */
-
-/*
- * Software allocation of To Host Mailbox resources
- */
-
-/* intstatus bits */
-#define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */
-#define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */
-#define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */
-#define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */
-
-/* tohostmailboxdata */
-#define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */
-#define HMB_DATA_DEVREADY 2 /* talk to host after enable */
-#define HMB_DATA_FC 4 /* per prio flowcontrol update flag */
-#define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */
-
-#define HMB_DATA_FCDATA_MASK 0xff000000
-#define HMB_DATA_FCDATA_SHIFT 24
-
-#define HMB_DATA_VERSION_MASK 0x00ff0000
-#define HMB_DATA_VERSION_SHIFT 16
-
-/*
- * Software-defined protocol header
- */
-
-/* Current protocol version */
-#define SDPCM_PROT_VERSION 4
-
-/*
- * Shared structure between dongle and the host.
- * The structure contains pointers to trap or assert information.
- */
-#define SDPCM_SHARED_VERSION 0x0003
-#define SDPCM_SHARED_VERSION_MASK 0x00FF
-#define SDPCM_SHARED_ASSERT_BUILT 0x0100
-#define SDPCM_SHARED_ASSERT 0x0200
-#define SDPCM_SHARED_TRAP 0x0400
-
-/* Space for header read, limit for data packets */
-#define MAX_HDR_READ (1 << 6)
-#define MAX_RX_DATASZ 2048
-
-/* Bump up limit on waiting for HT to account for first startup;
- * if the image is doing a CRC calculation before programming the PMU
- * for HT availability, it could take a couple hundred ms more, so
- * max out at a 1 second (1000000us).
- */
-#undef PMU_MAX_TRANSITION_DLY
-#define PMU_MAX_TRANSITION_DLY 1000000
-
-/* Value for ChipClockCSR during initial setup */
-#define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \
- SBSDIO_ALP_AVAIL_REQ)
-
-/* Flags for SDH calls */
-#define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED)
-
-#define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change
- * when idle
- */
-#define BRCMF_IDLE_INTERVAL 1
-
-#define KSO_WAIT_US 50
-#define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US)
-
-/*
- * Conversion of 802.1D priority to precedence level
- */
-static uint prio2prec(u32 prio)
-{
- return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ?
- (prio^2) : prio;
-}
-
-#ifdef DEBUG
-/* Device console log buffer state */
-struct brcmf_console {
- uint count; /* Poll interval msec counter */
- uint log_addr; /* Log struct address (fixed) */
- struct rte_log_le log_le; /* Log struct (host copy) */
- uint bufsize; /* Size of log buffer */
- u8 *buf; /* Log buffer (host copy) */
- uint last; /* Last buffer read index */
-};
-
-struct brcmf_trap_info {
- __le32 type;
- __le32 epc;
- __le32 cpsr;
- __le32 spsr;
- __le32 r0; /* a1 */
- __le32 r1; /* a2 */
- __le32 r2; /* a3 */
- __le32 r3; /* a4 */
- __le32 r4; /* v1 */
- __le32 r5; /* v2 */
- __le32 r6; /* v3 */
- __le32 r7; /* v4 */
- __le32 r8; /* v5 */
- __le32 r9; /* sb/v6 */
- __le32 r10; /* sl/v7 */
- __le32 r11; /* fp/v8 */
- __le32 r12; /* ip */
- __le32 r13; /* sp */
- __le32 r14; /* lr */
- __le32 pc; /* r15 */
-};
-#endif /* DEBUG */
-
-struct sdpcm_shared {
- u32 flags;
- u32 trap_addr;
- u32 assert_exp_addr;
- u32 assert_file_addr;
- u32 assert_line;
- u32 console_addr; /* Address of struct rte_console */
- u32 msgtrace_addr;
- u8 tag[32];
- u32 brpt_addr;
-};
-
-struct sdpcm_shared_le {
- __le32 flags;
- __le32 trap_addr;
- __le32 assert_exp_addr;
- __le32 assert_file_addr;
- __le32 assert_line;
- __le32 console_addr; /* Address of struct rte_console */
- __le32 msgtrace_addr;
- u8 tag[32];
- __le32 brpt_addr;
-};
-
-/* dongle SDIO bus specific header info */
-struct brcmf_sdio_hdrinfo {
- u8 seq_num;
- u8 channel;
- u16 len;
- u16 len_left;
- u16 len_nxtfrm;
- u8 dat_offset;
- bool lastfrm;
- u16 tail_pad;
-};
-
-/*
- * hold counter variables
- */
-struct brcmf_sdio_count {
- uint intrcount; /* Count of device interrupt callbacks */
- uint lastintrs; /* Count as of last watchdog timer */
- uint pollcnt; /* Count of active polls */
- uint regfails; /* Count of R_REG failures */
- uint tx_sderrs; /* Count of tx attempts with sd errors */
- uint fcqueued; /* Tx packets that got queued */
- uint rxrtx; /* Count of rtx requests (NAK to dongle) */
- uint rx_toolong; /* Receive frames too long to receive */
- uint rxc_errors; /* SDIO errors when reading control frames */
- uint rx_hdrfail; /* SDIO errors on header reads */
- uint rx_badhdr; /* Bad received headers (roosync?) */
- uint rx_badseq; /* Mismatched rx sequence number */
- uint fc_rcvd; /* Number of flow-control events received */
- uint fc_xoff; /* Number which turned on flow-control */
- uint fc_xon; /* Number which turned off flow-control */
- uint rxglomfail; /* Failed deglom attempts */
- uint rxglomframes; /* Number of glom frames (superframes) */
- uint rxglompkts; /* Number of packets from glom frames */
- uint f2rxhdrs; /* Number of header reads */
- uint f2rxdata; /* Number of frame data reads */
- uint f2txdata; /* Number of f2 frame writes */
- uint f1regdata; /* Number of f1 register accesses */
- uint tickcnt; /* Number of watchdog been schedule */
- ulong tx_ctlerrs; /* Err of sending ctrl frames */
- ulong tx_ctlpkts; /* Ctrl frames sent to dongle */
- ulong rx_ctlerrs; /* Err of processing rx ctrl frames */
- ulong rx_ctlpkts; /* Ctrl frames processed from dongle */
- ulong rx_readahead_cnt; /* packets where header read-ahead was used */
-};
-
-/* misc chip info needed by some of the routines */
-/* Private data for SDIO bus interaction */
-struct brcmf_sdio {
- struct brcmf_sdio_dev *sdiodev; /* sdio device handler */
- struct brcmf_chip *ci; /* Chip info struct */
-
- u32 ramsize; /* Size of RAM in SOCRAM (bytes) */
-
- u32 hostintmask; /* Copy of Host Interrupt Mask */
- atomic_t intstatus; /* Intstatus bits (events) pending */
- atomic_t fcstate; /* State of dongle flow-control */
-
- uint blocksize; /* Block size of SDIO transfers */
- uint roundup; /* Max roundup limit */
-
- struct pktq txq; /* Queue length used for flow-control */
- u8 flowcontrol; /* per prio flow control bitmask */
- u8 tx_seq; /* Transmit sequence number (next) */
- u8 tx_max; /* Maximum transmit sequence allowed */
-
- u8 *hdrbuf; /* buffer for handling rx frame */
- u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */
- u8 rx_seq; /* Receive sequence number (expected) */
- struct brcmf_sdio_hdrinfo cur_read;
- /* info of current read frame */
- bool rxskip; /* Skip receive (awaiting NAK ACK) */
- bool rxpending; /* Data frame pending in dongle */
-
- uint rxbound; /* Rx frames to read before resched */
- uint txbound; /* Tx frames to send before resched */
- uint txminmax;
-
- struct sk_buff *glomd; /* Packet containing glomming descriptor */
- struct sk_buff_head glom; /* Packet list for glommed superframe */
- uint glomerr; /* Glom packet read errors */
-
- u8 *rxbuf; /* Buffer for receiving control packets */
- uint rxblen; /* Allocated length of rxbuf */
- u8 *rxctl; /* Aligned pointer into rxbuf */
- u8 *rxctl_orig; /* pointer for freeing rxctl */
- uint rxlen; /* Length of valid data in buffer */
- spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */
-
- u8 sdpcm_ver; /* Bus protocol reported by dongle */
-
- bool intr; /* Use interrupts */
- bool poll; /* Use polling */
- atomic_t ipend; /* Device interrupt is pending */
- uint spurious; /* Count of spurious interrupts */
- uint pollrate; /* Ticks between device polls */
- uint polltick; /* Tick counter */
-
-#ifdef DEBUG
- uint console_interval;
- struct brcmf_console console; /* Console output polling support */
- uint console_addr; /* Console address from shared struct */
-#endif /* DEBUG */
-
- uint clkstate; /* State of sd and backplane clock(s) */
- bool activity; /* Activity flag for clock down */
- s32 idletime; /* Control for activity timeout */
- s32 idlecount; /* Activity timeout counter */
- s32 idleclock; /* How to set bus driver when idle */
- bool rxflow_mode; /* Rx flow control mode */
- bool rxflow; /* Is rx flow control on */
- bool alp_only; /* Don't use HT clock (ALP only) */
-
- u8 *ctrl_frame_buf;
- u16 ctrl_frame_len;
- bool ctrl_frame_stat;
-
- spinlock_t txq_lock; /* protect bus->txq */
- struct semaphore tx_seq_lock; /* protect bus->tx_seq */
- wait_queue_head_t ctrl_wait;
- wait_queue_head_t dcmd_resp_wait;
-
- struct timer_list timer;
- struct completion watchdog_wait;
- struct task_struct *watchdog_tsk;
- bool wd_timer_valid;
- uint save_ms;
-
- struct workqueue_struct *brcmf_wq;
- struct work_struct datawork;
- atomic_t dpc_tskcnt;
-
- bool txoff; /* Transmit flow-controlled */
- struct brcmf_sdio_count sdcnt;
- bool sr_enabled; /* SaveRestore enabled */
- bool sleeping; /* SDIO bus sleeping */
-
- u8 tx_hdrlen; /* sdio bus header length for tx packet */
- bool txglom; /* host tx glomming enable flag */
- u16 head_align; /* buffer pointer alignment */
- u16 sgentry_align; /* scatter-gather buffer alignment */
-};
-
-/* clkstate */
-#define CLK_NONE 0
-#define CLK_SDONLY 1
-#define CLK_PENDING 2
-#define CLK_AVAIL 3
-
-#ifdef DEBUG
-static int qcount[NUMPRIO];
-#endif /* DEBUG */
-
-#define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */
-
-#define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL)
-
-/* Retry count for register access failures */
-static const uint retry_limit = 2;
-
-/* Limit on rounding up frames */
-static const uint max_roundup = 512;
-
-#define ALIGNMENT 4
-
-enum brcmf_sdio_frmtype {
- BRCMF_SDIO_FT_NORMAL,
- BRCMF_SDIO_FT_SUPER,
- BRCMF_SDIO_FT_SUB,
-};
-
-#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
-
-/* SDIO Pad drive strength to select value mappings */
-struct sdiod_drive_str {
- u8 strength; /* Pad Drive Strength in mA */
- u8 sel; /* Chip-specific select value */
-};
-
-/* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8V) */
-static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = {
- {32, 0x6},
- {26, 0x7},
- {22, 0x4},
- {16, 0x5},
- {12, 0x2},
- {8, 0x3},
- {4, 0x0},
- {0, 0x1}
-};
-
-/* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */
-static const struct sdiod_drive_str sdiod_drive_strength_tab5_1v8[] = {
- {6, 0x7},
- {5, 0x6},
- {4, 0x5},
- {3, 0x4},
- {2, 0x2},
- {1, 0x1},
- {0, 0x0}
-};
-
-/* SDIO Drive Strength to sel value table for PMU Rev 17 (1.8v) */
-static const struct sdiod_drive_str sdiod_drvstr_tab6_1v8[] = {
- {3, 0x3},
- {2, 0x2},
- {1, 0x1},
- {0, 0x0} };
-
-/* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */
-static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = {
- {16, 0x7},
- {12, 0x5},
- {8, 0x3},
- {4, 0x1}
-};
-
-#define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin"
-#define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt"
-#define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin"
-#define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt"
-#define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin"
-#define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt"
-#define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin"
-#define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt"
-#define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin"
-#define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt"
-#define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin"
-#define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt"
-#define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin"
-#define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt"
-#define BCM43362_FIRMWARE_NAME "brcm/brcmfmac43362-sdio.bin"
-#define BCM43362_NVRAM_NAME "brcm/brcmfmac43362-sdio.txt"
-#define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin"
-#define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt"
-#define BCM4354_FIRMWARE_NAME "brcm/brcmfmac4354-sdio.bin"
-#define BCM4354_NVRAM_NAME "brcm/brcmfmac4354-sdio.txt"
-
-MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM43143_NVRAM_NAME);
-MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME);
-MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4329_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4330_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4334_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4335_NVRAM_NAME);
-MODULE_FIRMWARE(BCM43362_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM43362_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4339_NVRAM_NAME);
-MODULE_FIRMWARE(BCM4354_FIRMWARE_NAME);
-MODULE_FIRMWARE(BCM4354_NVRAM_NAME);
-
-struct brcmf_firmware_names {
- u32 chipid;
- u32 revmsk;
- const char *bin;
- const char *nv;
-};
-
-enum brcmf_firmware_type {
- BRCMF_FIRMWARE_BIN,
- BRCMF_FIRMWARE_NVRAM
-};
-
-#define BRCMF_FIRMWARE_NVRAM(name) \
- name ## _FIRMWARE_NAME, name ## _NVRAM_NAME
-
-static const struct brcmf_firmware_names brcmf_fwname_data[] = {
- { BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) },
- { BRCM_CC_43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) },
- { BRCM_CC_43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) },
- { BRCM_CC_4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) },
- { BRCM_CC_4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) },
- { BRCM_CC_4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) },
- { BRCM_CC_4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) },
- { BRCM_CC_43362_CHIP_ID, 0xFFFFFFFE, BRCMF_FIRMWARE_NVRAM(BCM43362) },
- { BRCM_CC_4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) },
- { BRCM_CC_4354_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4354) }
-};
-
-static int brcmf_sdio_get_fwnames(struct brcmf_chip *ci,
- struct brcmf_sdio_dev *sdiodev)
-{
- int i;
- uint fw_len, nv_len;
- char end;
-
- for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) {
- if (brcmf_fwname_data[i].chipid == ci->chip &&
- brcmf_fwname_data[i].revmsk & BIT(ci->chiprev))
- break;
- }
-
- if (i == ARRAY_SIZE(brcmf_fwname_data)) {
- brcmf_err("Unknown chipid %d [%d]\n", ci->chip, ci->chiprev);
- return -ENODEV;
- }
-
- fw_len = sizeof(sdiodev->fw_name) - 1;
- nv_len = sizeof(sdiodev->nvram_name) - 1;
- /* check if firmware path is provided by module parameter */
- if (brcmf_firmware_path[0] != '\0') {
- strncpy(sdiodev->fw_name, brcmf_firmware_path, fw_len);
- strncpy(sdiodev->nvram_name, brcmf_firmware_path, nv_len);
- fw_len -= strlen(sdiodev->fw_name);
- nv_len -= strlen(sdiodev->nvram_name);
-
- end = brcmf_firmware_path[strlen(brcmf_firmware_path) - 1];
- if (end != '/') {
- strncat(sdiodev->fw_name, "/", fw_len);
- strncat(sdiodev->nvram_name, "/", nv_len);
- fw_len--;
- nv_len--;
- }
- }
- strncat(sdiodev->fw_name, brcmf_fwname_data[i].bin, fw_len);
- strncat(sdiodev->nvram_name, brcmf_fwname_data[i].nv, nv_len);
-
- return 0;
-}
-
-static void pkt_align(struct sk_buff *p, int len, int align)
-{
- uint datalign;
- datalign = (unsigned long)(p->data);
- datalign = roundup(datalign, (align)) - datalign;
- if (datalign)
- skb_pull(p, datalign);
- __skb_trim(p, len);
-}
-
-/* To check if there's window offered */
-static bool data_ok(struct brcmf_sdio *bus)
-{
- return (u8)(bus->tx_max - bus->tx_seq) != 0 &&
- ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0;
-}
-
-/*
- * Reads a register in the SDIO hardware block. This block occupies a series of
- * adresses on the 32 bit backplane bus.
- */
-static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset)
-{
- struct brcmf_core *core;
- int ret;
-
- core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
- *regvar = brcmf_sdiod_regrl(bus->sdiodev, core->base + offset, &ret);
-
- return ret;
-}
-
-static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset)
-{
- struct brcmf_core *core;
- int ret;
-
- core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
- brcmf_sdiod_regwl(bus->sdiodev, core->base + reg_offset, regval, &ret);
-
- return ret;
-}
-
-static int
-brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on)
-{
- u8 wr_val = 0, rd_val, cmp_val, bmask;
- int err = 0;
- int try_cnt = 0;
-
- brcmf_dbg(TRACE, "Enter: on=%d\n", on);
-
- wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
- /* 1st KSO write goes to AOS wake up core if device is asleep */
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
- wr_val, &err);
-
- if (on) {
- /* device WAKEUP through KSO:
- * write bit 0 & read back until
- * both bits 0 (kso bit) & 1 (dev on status) are set
- */
- cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK |
- SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK;
- bmask = cmp_val;
- usleep_range(2000, 3000);
- } else {
- /* Put device to sleep, turn off KSO */
- cmp_val = 0;
- /* only check for bit0, bit1(dev on status) may not
- * get cleared right away
- */
- bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK;
- }
-
- do {
- /* reliable KSO bit set/clr:
- * the sdiod sleep write access is synced to PMU 32khz clk
- * just one write attempt may fail,
- * read it back until it matches written value
- */
- rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
- &err);
- if (((rd_val & bmask) == cmp_val) && !err)
- break;
-
- udelay(KSO_WAIT_US);
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
- wr_val, &err);
- } while (try_cnt++ < MAX_KSO_ATTEMPTS);
-
- if (try_cnt > 2)
- brcmf_dbg(SDIO, "try_cnt=%d rd_val=0x%x err=%d\n", try_cnt,
- rd_val, err);
-
- if (try_cnt > MAX_KSO_ATTEMPTS)
- brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err);
-
- return err;
-}
-
-#define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE)
-
-/* Turn backplane clock on or off */
-static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok)
-{
- int err;
- u8 clkctl, clkreq, devctl;
- unsigned long timeout;
-
- brcmf_dbg(SDIO, "Enter\n");
-
- clkctl = 0;
-
- if (bus->sr_enabled) {
- bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY);
- return 0;
- }
-
- if (on) {
- /* Request HT Avail */
- clkreq =
- bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ;
-
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- clkreq, &err);
- if (err) {
- brcmf_err("HT Avail request error: %d\n", err);
- return -EBADE;
- }
-
- /* Check current status */
- clkctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, &err);
- if (err) {
- brcmf_err("HT Avail read error: %d\n", err);
- return -EBADE;
- }
-
- /* Go to pending and await interrupt if appropriate */
- if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) {
- /* Allow only clock-available interrupt */
- devctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_DEVICE_CTL, &err);
- if (err) {
- brcmf_err("Devctl error setting CA: %d\n",
- err);
- return -EBADE;
- }
-
- devctl |= SBSDIO_DEVCTL_CA_INT_ONLY;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
- devctl, &err);
- brcmf_dbg(SDIO, "CLKCTL: set PENDING\n");
- bus->clkstate = CLK_PENDING;
-
- return 0;
- } else if (bus->clkstate == CLK_PENDING) {
- /* Cancel CA-only interrupt filter */
- devctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_DEVICE_CTL, &err);
- devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
- devctl, &err);
- }
-
- /* Otherwise, wait here (polling) for HT Avail */
- timeout = jiffies +
- msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000);
- while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
- clkctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR,
- &err);
- if (time_after(jiffies, timeout))
- break;
- else
- usleep_range(5000, 10000);
- }
- if (err) {
- brcmf_err("HT Avail request error: %d\n", err);
- return -EBADE;
- }
- if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
- brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n",
- PMU_MAX_TRANSITION_DLY, clkctl);
- return -EBADE;
- }
-
- /* Mark clock available */
- bus->clkstate = CLK_AVAIL;
- brcmf_dbg(SDIO, "CLKCTL: turned ON\n");
-
-#if defined(DEBUG)
- if (!bus->alp_only) {
- if (SBSDIO_ALPONLY(clkctl))
- brcmf_err("HT Clock should be on\n");
- }
-#endif /* defined (DEBUG) */
-
- } else {
- clkreq = 0;
-
- if (bus->clkstate == CLK_PENDING) {
- /* Cancel CA-only interrupt filter */
- devctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_DEVICE_CTL, &err);
- devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
- devctl, &err);
- }
-
- bus->clkstate = CLK_SDONLY;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- clkreq, &err);
- brcmf_dbg(SDIO, "CLKCTL: turned OFF\n");
- if (err) {
- brcmf_err("Failed access turning clock off: %d\n",
- err);
- return -EBADE;
- }
- }
- return 0;
-}
-
-/* Change idle/active SD state */
-static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on)
-{
- brcmf_dbg(SDIO, "Enter\n");
-
- if (on)
- bus->clkstate = CLK_SDONLY;
- else
- bus->clkstate = CLK_NONE;
-
- return 0;
-}
-
-/* Transition SD and backplane clock readiness */
-static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok)
-{
-#ifdef DEBUG
- uint oldstate = bus->clkstate;
-#endif /* DEBUG */
-
- brcmf_dbg(SDIO, "Enter\n");
-
- /* Early exit if we're already there */
- if (bus->clkstate == target) {
- if (target == CLK_AVAIL) {
- brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
- bus->activity = true;
- }
- return 0;
- }
-
- switch (target) {
- case CLK_AVAIL:
- /* Make sure SD clock is available */
- if (bus->clkstate == CLK_NONE)
- brcmf_sdio_sdclk(bus, true);
- /* Now request HT Avail on the backplane */
- brcmf_sdio_htclk(bus, true, pendok);
- brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
- bus->activity = true;
- break;
-
- case CLK_SDONLY:
- /* Remove HT request, or bring up SD clock */
- if (bus->clkstate == CLK_NONE)
- brcmf_sdio_sdclk(bus, true);
- else if (bus->clkstate == CLK_AVAIL)
- brcmf_sdio_htclk(bus, false, false);
- else
- brcmf_err("request for %d -> %d\n",
- bus->clkstate, target);
- brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
- break;
-
- case CLK_NONE:
- /* Make sure to remove HT request */
- if (bus->clkstate == CLK_AVAIL)
- brcmf_sdio_htclk(bus, false, false);
- /* Now remove the SD clock */
- brcmf_sdio_sdclk(bus, false);
- brcmf_sdio_wd_timer(bus, 0);
- break;
- }
-#ifdef DEBUG
- brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate);
-#endif /* DEBUG */
-
- return 0;
-}
-
-static int
-brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok)
-{
- int err = 0;
- u8 clkcsr;
-
- brcmf_dbg(SDIO, "Enter: request %s currently %s\n",
- (sleep ? "SLEEP" : "WAKE"),
- (bus->sleeping ? "SLEEP" : "WAKE"));
-
- /* If SR is enabled control bus state with KSO */
- if (bus->sr_enabled) {
- /* Done if we're already in the requested state */
- if (sleep == bus->sleeping)
- goto end;
-
- /* Going to sleep */
- if (sleep) {
- /* Don't sleep if something is pending */
- if (atomic_read(&bus->intstatus) ||
- atomic_read(&bus->ipend) > 0 ||
- (!atomic_read(&bus->fcstate) &&
- brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
- data_ok(bus))) {
- err = -EBUSY;
- goto done;
- }
-
- clkcsr = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR,
- &err);
- if ((clkcsr & SBSDIO_CSR_MASK) == 0) {
- brcmf_dbg(SDIO, "no clock, set ALP\n");
- brcmf_sdiod_regwb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR,
- SBSDIO_ALP_AVAIL_REQ, &err);
- }
- err = brcmf_sdio_kso_control(bus, false);
- /* disable watchdog */
- if (!err)
- brcmf_sdio_wd_timer(bus, 0);
- } else {
- bus->idlecount = 0;
- err = brcmf_sdio_kso_control(bus, true);
- }
- if (!err) {
- /* Change state */
- bus->sleeping = sleep;
- brcmf_dbg(SDIO, "new state %s\n",
- (sleep ? "SLEEP" : "WAKE"));
- } else {
- brcmf_err("error while changing bus sleep state %d\n",
- err);
- goto done;
- }
- }
-
-end:
- /* control clocks */
- if (sleep) {
- if (!bus->sr_enabled)
- brcmf_sdio_clkctl(bus, CLK_NONE, pendok);
- } else {
- brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok);
- }
-done:
- brcmf_dbg(SDIO, "Exit: err=%d\n", err);
- return err;
-
-}
-
-#ifdef DEBUG
-static inline bool brcmf_sdio_valid_shared_address(u32 addr)
-{
- return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff));
-}
-
-static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
- struct sdpcm_shared *sh)
-{
- u32 addr;
- int rv;
- u32 shaddr = 0;
- struct sdpcm_shared_le sh_le;
- __le32 addr_le;
-
- shaddr = bus->ci->rambase + bus->ramsize - 4;
-
- /*
- * Read last word in socram to determine
- * address of sdpcm_shared structure
- */
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_bus_sleep(bus, false, false);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4);
- sdio_release_host(bus->sdiodev->func[1]);
- if (rv < 0)
- return rv;
-
- addr = le32_to_cpu(addr_le);
-
- brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr);
-
- /*
- * Check if addr is valid.
- * NVRAM length at the end of memory should have been overwritten.
- */
- if (!brcmf_sdio_valid_shared_address(addr)) {
- brcmf_err("invalid sdpcm_shared address 0x%08X\n",
- addr);
- return -EINVAL;
- }
-
- /* Read hndrte_shared structure */
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le,
- sizeof(struct sdpcm_shared_le));
- if (rv < 0)
- return rv;
-
- /* Endianness */
- sh->flags = le32_to_cpu(sh_le.flags);
- sh->trap_addr = le32_to_cpu(sh_le.trap_addr);
- sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr);
- sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr);
- sh->assert_line = le32_to_cpu(sh_le.assert_line);
- sh->console_addr = le32_to_cpu(sh_le.console_addr);
- sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr);
-
- if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) {
- brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n",
- SDPCM_SHARED_VERSION,
- sh->flags & SDPCM_SHARED_VERSION_MASK);
- return -EPROTO;
- }
-
- return 0;
-}
-
-static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
-{
- struct sdpcm_shared sh;
-
- if (brcmf_sdio_readshared(bus, &sh) == 0)
- bus->console_addr = sh.console_addr;
-}
-#else
-static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
-{
-}
-#endif /* DEBUG */
-
-static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus)
-{
- u32 intstatus = 0;
- u32 hmb_data;
- u8 fcbits;
- int ret;
-
- brcmf_dbg(SDIO, "Enter\n");
-
- /* Read mailbox data and ack that we did so */
- ret = r_sdreg32(bus, &hmb_data,
- offsetof(struct sdpcmd_regs, tohostmailboxdata));
-
- if (ret == 0)
- w_sdreg32(bus, SMB_INT_ACK,
- offsetof(struct sdpcmd_regs, tosbmailbox));
- bus->sdcnt.f1regdata += 2;
-
- /* Dongle recomposed rx frames, accept them again */
- if (hmb_data & HMB_DATA_NAKHANDLED) {
- brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n",
- bus->rx_seq);
- if (!bus->rxskip)
- brcmf_err("unexpected NAKHANDLED!\n");
-
- bus->rxskip = false;
- intstatus |= I_HMB_FRAME_IND;
- }
-
- /*
- * DEVREADY does not occur with gSPI.
- */
- if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) {
- bus->sdpcm_ver =
- (hmb_data & HMB_DATA_VERSION_MASK) >>
- HMB_DATA_VERSION_SHIFT;
- if (bus->sdpcm_ver != SDPCM_PROT_VERSION)
- brcmf_err("Version mismatch, dongle reports %d, "
- "expecting %d\n",
- bus->sdpcm_ver, SDPCM_PROT_VERSION);
- else
- brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n",
- bus->sdpcm_ver);
-
- /*
- * Retrieve console state address now that firmware should have
- * updated it.
- */
- brcmf_sdio_get_console_addr(bus);
- }
-
- /*
- * Flow Control has been moved into the RX headers and this out of band
- * method isn't used any more.
- * remaining backward compatible with older dongles.
- */
- if (hmb_data & HMB_DATA_FC) {
- fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >>
- HMB_DATA_FCDATA_SHIFT;
-
- if (fcbits & ~bus->flowcontrol)
- bus->sdcnt.fc_xoff++;
-
- if (bus->flowcontrol & ~fcbits)
- bus->sdcnt.fc_xon++;
-
- bus->sdcnt.fc_rcvd++;
- bus->flowcontrol = fcbits;
- }
-
- /* Shouldn't be any others */
- if (hmb_data & ~(HMB_DATA_DEVREADY |
- HMB_DATA_NAKHANDLED |
- HMB_DATA_FC |
- HMB_DATA_FWREADY |
- HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK))
- brcmf_err("Unknown mailbox data content: 0x%02x\n",
- hmb_data);
-
- return intstatus;
-}
-
-static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx)
-{
- uint retries = 0;
- u16 lastrbc;
- u8 hi, lo;
- int err;
-
- brcmf_err("%sterminate frame%s\n",
- abort ? "abort command, " : "",
- rtx ? ", send NAK" : "");
-
- if (abort)
- brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2);
-
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL,
- SFC_RF_TERM, &err);
- bus->sdcnt.f1regdata++;
-
- /* Wait until the packet has been flushed (device/FIFO stable) */
- for (lastrbc = retries = 0xffff; retries > 0; retries--) {
- hi = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_RFRAMEBCHI, &err);
- lo = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_RFRAMEBCLO, &err);
- bus->sdcnt.f1regdata += 2;
-
- if ((hi == 0) && (lo == 0))
- break;
-
- if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) {
- brcmf_err("count growing: last 0x%04x now 0x%04x\n",
- lastrbc, (hi << 8) + lo);
- }
- lastrbc = (hi << 8) + lo;
- }
-
- if (!retries)
- brcmf_err("count never zeroed: last 0x%04x\n", lastrbc);
- else
- brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries);
-
- if (rtx) {
- bus->sdcnt.rxrtx++;
- err = w_sdreg32(bus, SMB_NAK,
- offsetof(struct sdpcmd_regs, tosbmailbox));
-
- bus->sdcnt.f1regdata++;
- if (err == 0)
- bus->rxskip = true;
- }
-
- /* Clear partial in any case */
- bus->cur_read.len = 0;
-}
-
-static void brcmf_sdio_txfail(struct brcmf_sdio *bus)
-{
- struct brcmf_sdio_dev *sdiodev = bus->sdiodev;
- u8 i, hi, lo;
-
- /* On failure, abort the command and terminate the frame */
- brcmf_err("sdio error, abort command and terminate frame\n");
- bus->sdcnt.tx_sderrs++;
-
- brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2);
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL);
- bus->sdcnt.f1regdata++;
-
- for (i = 0; i < 3; i++) {
- hi = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCHI, NULL);
- lo = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCLO, NULL);
- bus->sdcnt.f1regdata += 2;
- if ((hi == 0) && (lo == 0))
- break;
- }
-}
-
-/* return total length of buffer chain */
-static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus)
-{
- struct sk_buff *p;
- uint total;
-
- total = 0;
- skb_queue_walk(&bus->glom, p)
- total += p->len;
- return total;
-}
-
-static void brcmf_sdio_free_glom(struct brcmf_sdio *bus)
-{
- struct sk_buff *cur, *next;
-
- skb_queue_walk_safe(&bus->glom, cur, next) {
- skb_unlink(cur, &bus->glom);
- brcmu_pkt_buf_free_skb(cur);
- }
-}
-
-/**
- * brcmfmac sdio bus specific header
- * This is the lowest layer header wrapped on the packets transmitted between
- * host and WiFi dongle which contains information needed for SDIO core and
- * firmware
- *
- * It consists of 3 parts: hardware header, hardware extension header and
- * software header
- * hardware header (frame tag) - 4 bytes
- * Byte 0~1: Frame length
- * Byte 2~3: Checksum, bit-wise inverse of frame length
- * hardware extension header - 8 bytes
- * Tx glom mode only, N/A for Rx or normal Tx
- * Byte 0~1: Packet length excluding hw frame tag
- * Byte 2: Reserved
- * Byte 3: Frame flags, bit 0: last frame indication
- * Byte 4~5: Reserved
- * Byte 6~7: Tail padding length
- * software header - 8 bytes
- * Byte 0: Rx/Tx sequence number
- * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag
- * Byte 2: Length of next data frame, reserved for Tx
- * Byte 3: Data offset
- * Byte 4: Flow control bits, reserved for Tx
- * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet
- * Byte 6~7: Reserved
- */
-#define SDPCM_HWHDR_LEN 4
-#define SDPCM_HWEXT_LEN 8
-#define SDPCM_SWHDR_LEN 8
-#define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN)
-/* software header */
-#define SDPCM_SEQ_MASK 0x000000ff
-#define SDPCM_SEQ_WRAP 256
-#define SDPCM_CHANNEL_MASK 0x00000f00
-#define SDPCM_CHANNEL_SHIFT 8
-#define SDPCM_CONTROL_CHANNEL 0 /* Control */
-#define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */
-#define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */
-#define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */
-#define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */
-#define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80)
-#define SDPCM_NEXTLEN_MASK 0x00ff0000
-#define SDPCM_NEXTLEN_SHIFT 16
-#define SDPCM_DOFFSET_MASK 0xff000000
-#define SDPCM_DOFFSET_SHIFT 24
-#define SDPCM_FCMASK_MASK 0x000000ff
-#define SDPCM_WINDOW_MASK 0x0000ff00
-#define SDPCM_WINDOW_SHIFT 8
-
-static inline u8 brcmf_sdio_getdatoffset(u8 *swheader)
-{
- u32 hdrvalue;
- hdrvalue = *(u32 *)swheader;
- return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT);
-}
-
-static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header,
- struct brcmf_sdio_hdrinfo *rd,
- enum brcmf_sdio_frmtype type)
-{
- u16 len, checksum;
- u8 rx_seq, fc, tx_seq_max;
- u32 swheader;
-
- trace_brcmf_sdpcm_hdr(SDPCM_RX, header);
-
- /* hw header */
- len = get_unaligned_le16(header);
- checksum = get_unaligned_le16(header + sizeof(u16));
- /* All zero means no more to read */
- if (!(len | checksum)) {
- bus->rxpending = false;
- return -ENODATA;
- }
- if ((u16)(~(len ^ checksum))) {
- brcmf_err("HW header checksum error\n");
- bus->sdcnt.rx_badhdr++;
- brcmf_sdio_rxfail(bus, false, false);
- return -EIO;
- }
- if (len < SDPCM_HDRLEN) {
- brcmf_err("HW header length error\n");
- return -EPROTO;
- }
- if (type == BRCMF_SDIO_FT_SUPER &&
- (roundup(len, bus->blocksize) != rd->len)) {
- brcmf_err("HW superframe header length error\n");
- return -EPROTO;
- }
- if (type == BRCMF_SDIO_FT_SUB && len > rd->len) {
- brcmf_err("HW subframe header length error\n");
- return -EPROTO;
- }
- rd->len = len;
-
- /* software header */
- header += SDPCM_HWHDR_LEN;
- swheader = le32_to_cpu(*(__le32 *)header);
- if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) {
- brcmf_err("Glom descriptor found in superframe head\n");
- rd->len = 0;
- return -EINVAL;
- }
- rx_seq = (u8)(swheader & SDPCM_SEQ_MASK);
- rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT;
- if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL &&
- type != BRCMF_SDIO_FT_SUPER) {
- brcmf_err("HW header length too long\n");
- bus->sdcnt.rx_toolong++;
- brcmf_sdio_rxfail(bus, false, false);
- rd->len = 0;
- return -EPROTO;
- }
- if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) {
- brcmf_err("Wrong channel for superframe\n");
- rd->len = 0;
- return -EINVAL;
- }
- if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL &&
- rd->channel != SDPCM_EVENT_CHANNEL) {
- brcmf_err("Wrong channel for subframe\n");
- rd->len = 0;
- return -EINVAL;
- }
- rd->dat_offset = brcmf_sdio_getdatoffset(header);
- if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) {
- brcmf_err("seq %d: bad data offset\n", rx_seq);
- bus->sdcnt.rx_badhdr++;
- brcmf_sdio_rxfail(bus, false, false);
- rd->len = 0;
- return -ENXIO;
- }
- if (rd->seq_num != rx_seq) {
- brcmf_err("seq %d: sequence number error, expect %d\n",
- rx_seq, rd->seq_num);
- bus->sdcnt.rx_badseq++;
- rd->seq_num = rx_seq;
- }
- /* no need to check the reset for subframe */
- if (type == BRCMF_SDIO_FT_SUB)
- return 0;
- rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT;
- if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) {
- /* only warm for NON glom packet */
- if (rd->channel != SDPCM_GLOM_CHANNEL)
- brcmf_err("seq %d: next length error\n", rx_seq);
- rd->len_nxtfrm = 0;
- }
- swheader = le32_to_cpu(*(__le32 *)(header + 4));
- fc = swheader & SDPCM_FCMASK_MASK;
- if (bus->flowcontrol != fc) {
- if (~bus->flowcontrol & fc)
- bus->sdcnt.fc_xoff++;
- if (bus->flowcontrol & ~fc)
- bus->sdcnt.fc_xon++;
- bus->sdcnt.fc_rcvd++;
- bus->flowcontrol = fc;
- }
- tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT;
- if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) {
- brcmf_err("seq %d: max tx seq number error\n", rx_seq);
- tx_seq_max = bus->tx_seq + 2;
- }
- bus->tx_max = tx_seq_max;
-
- return 0;
-}
-
-static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length)
-{
- *(__le16 *)header = cpu_to_le16(frm_length);
- *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length);
-}
-
-static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header,
- struct brcmf_sdio_hdrinfo *hd_info)
-{
- u32 hdrval;
- u8 hdr_offset;
-
- brcmf_sdio_update_hwhdr(header, hd_info->len);
- hdr_offset = SDPCM_HWHDR_LEN;
-
- if (bus->txglom) {
- hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24);
- *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
- hdrval = (u16)hd_info->tail_pad << 16;
- *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval);
- hdr_offset += SDPCM_HWEXT_LEN;
- }
-
- hdrval = hd_info->seq_num;
- hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) &
- SDPCM_CHANNEL_MASK;
- hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) &
- SDPCM_DOFFSET_MASK;
- *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
- *(((__le32 *)(header + hdr_offset)) + 1) = 0;
- trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header);
-}
-
-static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
-{
- u16 dlen, totlen;
- u8 *dptr, num = 0;
- u16 sublen;
- struct sk_buff *pfirst, *pnext;
-
- int errcode;
- u8 doff, sfdoff;
-
- struct brcmf_sdio_hdrinfo rd_new;
-
- /* If packets, issue read(s) and send up packet chain */
- /* Return sequence numbers consumed? */
-
- brcmf_dbg(SDIO, "start: glomd %p glom %p\n",
- bus->glomd, skb_peek(&bus->glom));
-
- /* If there's a descriptor, generate the packet chain */
- if (bus->glomd) {
- pfirst = pnext = NULL;
- dlen = (u16) (bus->glomd->len);
- dptr = bus->glomd->data;
- if (!dlen || (dlen & 1)) {
- brcmf_err("bad glomd len(%d), ignore descriptor\n",
- dlen);
- dlen = 0;
- }
-
- for (totlen = num = 0; dlen; num++) {
- /* Get (and move past) next length */
- sublen = get_unaligned_le16(dptr);
- dlen -= sizeof(u16);
- dptr += sizeof(u16);
- if ((sublen < SDPCM_HDRLEN) ||
- ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) {
- brcmf_err("descriptor len %d bad: %d\n",
- num, sublen);
- pnext = NULL;
- break;
- }
- if (sublen % bus->sgentry_align) {
- brcmf_err("sublen %d not multiple of %d\n",
- sublen, bus->sgentry_align);
- }
- totlen += sublen;
-
- /* For last frame, adjust read len so total
- is a block multiple */
- if (!dlen) {
- sublen +=
- (roundup(totlen, bus->blocksize) - totlen);
- totlen = roundup(totlen, bus->blocksize);
- }
-
- /* Allocate/chain packet for next subframe */
- pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align);
- if (pnext == NULL) {
- brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n",
- num, sublen);
- break;
- }
- skb_queue_tail(&bus->glom, pnext);
-
- /* Adhere to start alignment requirements */
- pkt_align(pnext, sublen, bus->sgentry_align);
- }
-
- /* If all allocations succeeded, save packet chain
- in bus structure */
- if (pnext) {
- brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
- totlen, num);
- if (BRCMF_GLOM_ON() && bus->cur_read.len &&
- totlen != bus->cur_read.len) {
- brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
- bus->cur_read.len, totlen, rxseq);
- }
- pfirst = pnext = NULL;
- } else {
- brcmf_sdio_free_glom(bus);
- num = 0;
- }
-
- /* Done with descriptor packet */
- brcmu_pkt_buf_free_skb(bus->glomd);
- bus->glomd = NULL;
- bus->cur_read.len = 0;
- }
-
- /* Ok -- either we just generated a packet chain,
- or had one from before */
- if (!skb_queue_empty(&bus->glom)) {
- if (BRCMF_GLOM_ON()) {
- brcmf_dbg(GLOM, "try superframe read, packet chain:\n");
- skb_queue_walk(&bus->glom, pnext) {
- brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n",
- pnext, (u8 *) (pnext->data),
- pnext->len, pnext->len);
- }
- }
-
- pfirst = skb_peek(&bus->glom);
- dlen = (u16) brcmf_sdio_glom_len(bus);
-
- /* Do an SDIO read for the superframe. Configurable iovar to
- * read directly into the chained packet, or allocate a large
- * packet and and copy into the chain.
- */
- sdio_claim_host(bus->sdiodev->func[1]);
- errcode = brcmf_sdiod_recv_chain(bus->sdiodev,
- &bus->glom, dlen);
- sdio_release_host(bus->sdiodev->func[1]);
- bus->sdcnt.f2rxdata++;
-
- /* On failure, kill the superframe, allow a couple retries */
- if (errcode < 0) {
- brcmf_err("glom read of %d bytes failed: %d\n",
- dlen, errcode);
-
- sdio_claim_host(bus->sdiodev->func[1]);
- if (bus->glomerr++ < 3) {
- brcmf_sdio_rxfail(bus, true, true);
- } else {
- bus->glomerr = 0;
- brcmf_sdio_rxfail(bus, true, false);
- bus->sdcnt.rxglomfail++;
- brcmf_sdio_free_glom(bus);
- }
- sdio_release_host(bus->sdiodev->func[1]);
- return 0;
- }
-
- brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- pfirst->data, min_t(int, pfirst->len, 48),
- "SUPERFRAME:\n");
-
- rd_new.seq_num = rxseq;
- rd_new.len = dlen;
- sdio_claim_host(bus->sdiodev->func[1]);
- errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new,
- BRCMF_SDIO_FT_SUPER);
- sdio_release_host(bus->sdiodev->func[1]);
- bus->cur_read.len = rd_new.len_nxtfrm << 4;
-
- /* Remove superframe header, remember offset */
- skb_pull(pfirst, rd_new.dat_offset);
- sfdoff = rd_new.dat_offset;
- num = 0;
-
- /* Validate all the subframe headers */
- skb_queue_walk(&bus->glom, pnext) {
- /* leave when invalid subframe is found */
- if (errcode)
- break;
-
- rd_new.len = pnext->len;
- rd_new.seq_num = rxseq++;
- sdio_claim_host(bus->sdiodev->func[1]);
- errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new,
- BRCMF_SDIO_FT_SUB);
- sdio_release_host(bus->sdiodev->func[1]);
- brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- pnext->data, 32, "subframe:\n");
-
- num++;
- }
-
- if (errcode) {
- /* Terminate frame on error, request
- a couple retries */
- sdio_claim_host(bus->sdiodev->func[1]);
- if (bus->glomerr++ < 3) {
- /* Restore superframe header space */
- skb_push(pfirst, sfdoff);
- brcmf_sdio_rxfail(bus, true, true);
- } else {
- bus->glomerr = 0;
- brcmf_sdio_rxfail(bus, true, false);
- bus->sdcnt.rxglomfail++;
- brcmf_sdio_free_glom(bus);
- }
- sdio_release_host(bus->sdiodev->func[1]);
- bus->cur_read.len = 0;
- return 0;
- }
-
- /* Basic SD framing looks ok - process each packet (header) */
-
- skb_queue_walk_safe(&bus->glom, pfirst, pnext) {
- dptr = (u8 *) (pfirst->data);
- sublen = get_unaligned_le16(dptr);
- doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]);
-
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
- dptr, pfirst->len,
- "Rx Subframe Data:\n");
-
- __skb_trim(pfirst, sublen);
- skb_pull(pfirst, doff);
-
- if (pfirst->len == 0) {
- skb_unlink(pfirst, &bus->glom);
- brcmu_pkt_buf_free_skb(pfirst);
- continue;
- }
-
- brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- pfirst->data,
- min_t(int, pfirst->len, 32),
- "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n",
- bus->glom.qlen, pfirst, pfirst->data,
- pfirst->len, pfirst->next,
- pfirst->prev);
- skb_unlink(pfirst, &bus->glom);
- brcmf_rx_frame(bus->sdiodev->dev, pfirst);
- bus->sdcnt.rxglompkts++;
- }
-
- bus->sdcnt.rxglomframes++;
- }
- return num;
-}
-
-static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition,
- bool *pending)
-{
- DECLARE_WAITQUEUE(wait, current);
- int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT);
-
- /* Wait until control frame is available */
- add_wait_queue(&bus->dcmd_resp_wait, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
-
- while (!(*condition) && (!signal_pending(current) && timeout))
- timeout = schedule_timeout(timeout);
-
- if (signal_pending(current))
- *pending = true;
-
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&bus->dcmd_resp_wait, &wait);
-
- return timeout;
-}
-
-static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus)
-{
- if (waitqueue_active(&bus->dcmd_resp_wait))
- wake_up_interruptible(&bus->dcmd_resp_wait);
-
- return 0;
-}
-static void
-brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff)
-{
- uint rdlen, pad;
- u8 *buf = NULL, *rbuf;
- int sdret;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- if (bus->rxblen)
- buf = vzalloc(bus->rxblen);
- if (!buf)
- goto done;
-
- rbuf = bus->rxbuf;
- pad = ((unsigned long)rbuf % bus->head_align);
- if (pad)
- rbuf += (bus->head_align - pad);
-
- /* Copy the already-read portion over */
- memcpy(buf, hdr, BRCMF_FIRSTREAD);
- if (len <= BRCMF_FIRSTREAD)
- goto gotpkt;
-
- /* Raise rdlen to next SDIO block to avoid tail command */
- rdlen = len - BRCMF_FIRSTREAD;
- if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) {
- pad = bus->blocksize - (rdlen % bus->blocksize);
- if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
- ((len + pad) < bus->sdiodev->bus_if->maxctl))
- rdlen += pad;
- } else if (rdlen % bus->head_align) {
- rdlen += bus->head_align - (rdlen % bus->head_align);
- }
-
- /* Drop if the read is too big or it exceeds our maximum */
- if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) {
- brcmf_err("%d-byte control read exceeds %d-byte buffer\n",
- rdlen, bus->sdiodev->bus_if->maxctl);
- brcmf_sdio_rxfail(bus, false, false);
- goto done;
- }
-
- if ((len - doff) > bus->sdiodev->bus_if->maxctl) {
- brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n",
- len, len - doff, bus->sdiodev->bus_if->maxctl);
- bus->sdcnt.rx_toolong++;
- brcmf_sdio_rxfail(bus, false, false);
- goto done;
- }
-
- /* Read remain of frame body */
- sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen);
- bus->sdcnt.f2rxdata++;
-
- /* Control frame failures need retransmission */
- if (sdret < 0) {
- brcmf_err("read %d control bytes failed: %d\n",
- rdlen, sdret);
- bus->sdcnt.rxc_errors++;
- brcmf_sdio_rxfail(bus, true, true);
- goto done;
- } else
- memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen);
-
-gotpkt:
-
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
- buf, len, "RxCtrl:\n");
-
- /* Point to valid data and indicate its length */
- spin_lock_bh(&bus->rxctl_lock);
- if (bus->rxctl) {
- brcmf_err("last control frame is being processed.\n");
- spin_unlock_bh(&bus->rxctl_lock);
- vfree(buf);
- goto done;
- }
- bus->rxctl = buf + doff;
- bus->rxctl_orig = buf;
- bus->rxlen = len - doff;
- spin_unlock_bh(&bus->rxctl_lock);
-
-done:
- /* Awake any waiters */
- brcmf_sdio_dcmd_resp_wake(bus);
-}
-
-/* Pad read to blocksize for efficiency */
-static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen)
-{
- if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) {
- *pad = bus->blocksize - (*rdlen % bus->blocksize);
- if (*pad <= bus->roundup && *pad < bus->blocksize &&
- *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ)
- *rdlen += *pad;
- } else if (*rdlen % bus->head_align) {
- *rdlen += bus->head_align - (*rdlen % bus->head_align);
- }
-}
-
-static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
-{
- struct sk_buff *pkt; /* Packet for event or data frames */
- u16 pad; /* Number of pad bytes to read */
- uint rxleft = 0; /* Remaining number of frames allowed */
- int ret; /* Return code from calls */
- uint rxcount = 0; /* Total frames read */
- struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new;
- u8 head_read = 0;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- /* Not finished unless we encounter no more frames indication */
- bus->rxpending = true;
-
- for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
- !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if);
- rd->seq_num++, rxleft--) {
-
- /* Handle glomming separately */
- if (bus->glomd || !skb_queue_empty(&bus->glom)) {
- u8 cnt;
- brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
- bus->glomd, skb_peek(&bus->glom));
- cnt = brcmf_sdio_rxglom(bus, rd->seq_num);
- brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
- rd->seq_num += cnt - 1;
- rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
- continue;
- }
-
- rd->len_left = rd->len;
- /* read header first for unknow frame length */
- sdio_claim_host(bus->sdiodev->func[1]);
- if (!rd->len) {
- ret = brcmf_sdiod_recv_buf(bus->sdiodev,
- bus->rxhdr, BRCMF_FIRSTREAD);
- bus->sdcnt.f2rxhdrs++;
- if (ret < 0) {
- brcmf_err("RXHEADER FAILED: %d\n",
- ret);
- bus->sdcnt.rx_hdrfail++;
- brcmf_sdio_rxfail(bus, true, true);
- sdio_release_host(bus->sdiodev->func[1]);
- continue;
- }
-
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(),
- bus->rxhdr, SDPCM_HDRLEN,
- "RxHdr:\n");
-
- if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd,
- BRCMF_SDIO_FT_NORMAL)) {
- sdio_release_host(bus->sdiodev->func[1]);
- if (!bus->rxpending)
- break;
- else
- continue;
- }
-
- if (rd->channel == SDPCM_CONTROL_CHANNEL) {
- brcmf_sdio_read_control(bus, bus->rxhdr,
- rd->len,
- rd->dat_offset);
- /* prepare the descriptor for the next read */
- rd->len = rd->len_nxtfrm << 4;
- rd->len_nxtfrm = 0;
- /* treat all packet as event if we don't know */
- rd->channel = SDPCM_EVENT_CHANNEL;
- sdio_release_host(bus->sdiodev->func[1]);
- continue;
- }
- rd->len_left = rd->len > BRCMF_FIRSTREAD ?
- rd->len - BRCMF_FIRSTREAD : 0;
- head_read = BRCMF_FIRSTREAD;
- }
-
- brcmf_sdio_pad(bus, &pad, &rd->len_left);
-
- pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read +
- bus->head_align);
- if (!pkt) {
- /* Give up on data, request rtx of events */
- brcmf_err("brcmu_pkt_buf_get_skb failed\n");
- brcmf_sdio_rxfail(bus, false,
- RETRYCHAN(rd->channel));
- sdio_release_host(bus->sdiodev->func[1]);
- continue;
- }
- skb_pull(pkt, head_read);
- pkt_align(pkt, rd->len_left, bus->head_align);
-
- ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt);
- bus->sdcnt.f2rxdata++;
- sdio_release_host(bus->sdiodev->func[1]);
-
- if (ret < 0) {
- brcmf_err("read %d bytes from channel %d failed: %d\n",
- rd->len, rd->channel, ret);
- brcmu_pkt_buf_free_skb(pkt);
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_rxfail(bus, true,
- RETRYCHAN(rd->channel));
- sdio_release_host(bus->sdiodev->func[1]);
- continue;
- }
-
- if (head_read) {
- skb_push(pkt, head_read);
- memcpy(pkt->data, bus->rxhdr, head_read);
- head_read = 0;
- } else {
- memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN);
- rd_new.seq_num = rd->seq_num;
- sdio_claim_host(bus->sdiodev->func[1]);
- if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new,
- BRCMF_SDIO_FT_NORMAL)) {
- rd->len = 0;
- brcmu_pkt_buf_free_skb(pkt);
- }
- bus->sdcnt.rx_readahead_cnt++;
- if (rd->len != roundup(rd_new.len, 16)) {
- brcmf_err("frame length mismatch:read %d, should be %d\n",
- rd->len,
- roundup(rd_new.len, 16) >> 4);
- rd->len = 0;
- brcmf_sdio_rxfail(bus, true, true);
- sdio_release_host(bus->sdiodev->func[1]);
- brcmu_pkt_buf_free_skb(pkt);
- continue;
- }
- sdio_release_host(bus->sdiodev->func[1]);
- rd->len_nxtfrm = rd_new.len_nxtfrm;
- rd->channel = rd_new.channel;
- rd->dat_offset = rd_new.dat_offset;
-
- brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() &&
- BRCMF_DATA_ON()) &&
- BRCMF_HDRS_ON(),
- bus->rxhdr, SDPCM_HDRLEN,
- "RxHdr:\n");
-
- if (rd_new.channel == SDPCM_CONTROL_CHANNEL) {
- brcmf_err("readahead on control packet %d?\n",
- rd_new.seq_num);
- /* Force retry w/normal header read */
- rd->len = 0;
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_rxfail(bus, false, true);
- sdio_release_host(bus->sdiodev->func[1]);
- brcmu_pkt_buf_free_skb(pkt);
- continue;
- }
- }
-
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
- pkt->data, rd->len, "Rx Data:\n");
-
- /* Save superframe descriptor and allocate packet frame */
- if (rd->channel == SDPCM_GLOM_CHANNEL) {
- if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) {
- brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
- rd->len);
- brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
- pkt->data, rd->len,
- "Glom Data:\n");
- __skb_trim(pkt, rd->len);
- skb_pull(pkt, SDPCM_HDRLEN);
- bus->glomd = pkt;
- } else {
- brcmf_err("%s: glom superframe w/o "
- "descriptor!\n", __func__);
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_rxfail(bus, false, false);
- sdio_release_host(bus->sdiodev->func[1]);
- }
- /* prepare the descriptor for the next read */
- rd->len = rd->len_nxtfrm << 4;
- rd->len_nxtfrm = 0;
- /* treat all packet as event if we don't know */
- rd->channel = SDPCM_EVENT_CHANNEL;
- continue;
- }
-
- /* Fill in packet len and prio, deliver upward */
- __skb_trim(pkt, rd->len);
- skb_pull(pkt, rd->dat_offset);
-
- /* prepare the descriptor for the next read */
- rd->len = rd->len_nxtfrm << 4;
- rd->len_nxtfrm = 0;
- /* treat all packet as event if we don't know */
- rd->channel = SDPCM_EVENT_CHANNEL;
-
- if (pkt->len == 0) {
- brcmu_pkt_buf_free_skb(pkt);
- continue;
- }
-
- brcmf_rx_frame(bus->sdiodev->dev, pkt);
- }
-
- rxcount = maxframes - rxleft;
- /* Message if we hit the limit */
- if (!rxleft)
- brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes);
- else
- brcmf_dbg(DATA, "processed %d frames\n", rxcount);
- /* Back off rxseq if awaiting rtx, update rx_seq */
- if (bus->rxskip)
- rd->seq_num--;
- bus->rx_seq = rd->seq_num;
-
- return rxcount;
-}
-
-static void
-brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus)
-{
- if (waitqueue_active(&bus->ctrl_wait))
- wake_up_interruptible(&bus->ctrl_wait);
- return;
-}
-
-static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt)
-{
- u16 head_pad;
- u8 *dat_buf;
-
- dat_buf = (u8 *)(pkt->data);
-
- /* Check head padding */
- head_pad = ((unsigned long)dat_buf % bus->head_align);
- if (head_pad) {
- if (skb_headroom(pkt) < head_pad) {
- bus->sdiodev->bus_if->tx_realloc++;
- head_pad = 0;
- if (skb_cow(pkt, head_pad))
- return -ENOMEM;
- }
- skb_push(pkt, head_pad);
- dat_buf = (u8 *)(pkt->data);
- memset(dat_buf, 0, head_pad + bus->tx_hdrlen);
- }
- return head_pad;
-}
-
-/**
- * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for
- * bus layer usage.
- */
-/* flag marking a dummy skb added for DMA alignment requirement */
-#define ALIGN_SKB_FLAG 0x8000
-/* bit mask of data length chopped from the previous packet */
-#define ALIGN_SKB_CHOP_LEN_MASK 0x7fff
-
-static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus,
- struct sk_buff_head *pktq,
- struct sk_buff *pkt, u16 total_len)
-{
- struct brcmf_sdio_dev *sdiodev;
- struct sk_buff *pkt_pad;
- u16 tail_pad, tail_chop, chain_pad;
- unsigned int blksize;
- bool lastfrm;
- int ntail, ret;
-
- sdiodev = bus->sdiodev;
- blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize;
- /* sg entry alignment should be a divisor of block size */
- WARN_ON(blksize % bus->sgentry_align);
-
- /* Check tail padding */
- lastfrm = skb_queue_is_last(pktq, pkt);
- tail_pad = 0;
- tail_chop = pkt->len % bus->sgentry_align;
- if (tail_chop)
- tail_pad = bus->sgentry_align - tail_chop;
- chain_pad = (total_len + tail_pad) % blksize;
- if (lastfrm && chain_pad)
- tail_pad += blksize - chain_pad;
- if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) {
- pkt_pad = brcmu_pkt_buf_get_skb(tail_pad + tail_chop +
- bus->head_align);
- if (pkt_pad == NULL)
- return -ENOMEM;
- ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad);
- if (unlikely(ret < 0)) {
- kfree_skb(pkt_pad);
- return ret;
- }
- memcpy(pkt_pad->data,
- pkt->data + pkt->len - tail_chop,
- tail_chop);
- *(u16 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop;
- skb_trim(pkt, pkt->len - tail_chop);
- skb_trim(pkt_pad, tail_pad + tail_chop);
- __skb_queue_after(pktq, pkt, pkt_pad);
- } else {
- ntail = pkt->data_len + tail_pad -
- (pkt->end - pkt->tail);
- if (skb_cloned(pkt) || ntail > 0)
- if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC))
- return -ENOMEM;
- if (skb_linearize(pkt))
- return -ENOMEM;
- __skb_put(pkt, tail_pad);
- }
-
- return tail_pad;
-}
-
-/**
- * brcmf_sdio_txpkt_prep - packet preparation for transmit
- * @bus: brcmf_sdio structure pointer
- * @pktq: packet list pointer
- * @chan: virtual channel to transmit the packet
- *
- * Processes to be applied to the packet
- * - Align data buffer pointer
- * - Align data buffer length
- * - Prepare header
- * Return: negative value if there is error
- */
-static int
-brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
- uint chan)
-{
- u16 head_pad, total_len;
- struct sk_buff *pkt_next;
- u8 txseq;
- int ret;
- struct brcmf_sdio_hdrinfo hd_info = {0};
-
- txseq = bus->tx_seq;
- total_len = 0;
- skb_queue_walk(pktq, pkt_next) {
- /* alignment packet inserted in previous
- * loop cycle can be skipped as it is
- * already properly aligned and does not
- * need an sdpcm header.
- */
- if (*(u16 *)(pkt_next->cb) & ALIGN_SKB_FLAG)
- continue;
-
- /* align packet data pointer */
- ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next);
- if (ret < 0)
- return ret;
- head_pad = (u16)ret;
- if (head_pad)
- memset(pkt_next->data + bus->tx_hdrlen, 0, head_pad);
-
- total_len += pkt_next->len;
-
- hd_info.len = pkt_next->len;
- hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next);
- if (bus->txglom && pktq->qlen > 1) {
- ret = brcmf_sdio_txpkt_prep_sg(bus, pktq,
- pkt_next, total_len);
- if (ret < 0)
- return ret;
- hd_info.tail_pad = (u16)ret;
- total_len += (u16)ret;
- }
-
- hd_info.channel = chan;
- hd_info.dat_offset = head_pad + bus->tx_hdrlen;
- hd_info.seq_num = txseq++;
-
- /* Now fill the header */
- brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info);
-
- if (BRCMF_BYTES_ON() &&
- ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) ||
- (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL)))
- brcmf_dbg_hex_dump(true, pkt_next->data, hd_info.len,
- "Tx Frame:\n");
- else if (BRCMF_HDRS_ON())
- brcmf_dbg_hex_dump(true, pkt_next->data,
- head_pad + bus->tx_hdrlen,
- "Tx Header:\n");
- }
- /* Hardware length tag of the first packet should be total
- * length of the chain (including padding)
- */
- if (bus->txglom)
- brcmf_sdio_update_hwhdr(pktq->next->data, total_len);
- return 0;
-}
-
-/**
- * brcmf_sdio_txpkt_postp - packet post processing for transmit
- * @bus: brcmf_sdio structure pointer
- * @pktq: packet list pointer
- *
- * Processes to be applied to the packet
- * - Remove head padding
- * - Remove tail padding
- */
-static void
-brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq)
-{
- u8 *hdr;
- u32 dat_offset;
- u16 tail_pad;
- u16 dummy_flags, chop_len;
- struct sk_buff *pkt_next, *tmp, *pkt_prev;
-
- skb_queue_walk_safe(pktq, pkt_next, tmp) {
- dummy_flags = *(u16 *)(pkt_next->cb);
- if (dummy_flags & ALIGN_SKB_FLAG) {
- chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK;
- if (chop_len) {
- pkt_prev = pkt_next->prev;
- skb_put(pkt_prev, chop_len);
- }
- __skb_unlink(pkt_next, pktq);
- brcmu_pkt_buf_free_skb(pkt_next);
- } else {
- hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN;
- dat_offset = le32_to_cpu(*(__le32 *)hdr);
- dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >>
- SDPCM_DOFFSET_SHIFT;
- skb_pull(pkt_next, dat_offset);
- if (bus->txglom) {
- tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2));
- skb_trim(pkt_next, pkt_next->len - tail_pad);
- }
- }
- }
-}
-
-/* Writes a HW/SW header into the packet and sends it. */
-/* Assumes: (a) header space already there, (b) caller holds lock */
-static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
- uint chan)
-{
- int ret;
- struct sk_buff *pkt_next, *tmp;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- ret = brcmf_sdio_txpkt_prep(bus, pktq, chan);
- if (ret)
- goto done;
-
- sdio_claim_host(bus->sdiodev->func[1]);
- ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq);
- bus->sdcnt.f2txdata++;
-
- if (ret < 0)
- brcmf_sdio_txfail(bus);
-
- sdio_release_host(bus->sdiodev->func[1]);
-
-done:
- brcmf_sdio_txpkt_postp(bus, pktq);
- if (ret == 0)
- bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP;
- skb_queue_walk_safe(pktq, pkt_next, tmp) {
- __skb_unlink(pkt_next, pktq);
- brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0);
- }
- return ret;
-}
-
-static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes)
-{
- struct sk_buff *pkt;
- struct sk_buff_head pktq;
- u32 intstatus = 0;
- int ret = 0, prec_out, i;
- uint cnt = 0;
- u8 tx_prec_map, pkt_num;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- tx_prec_map = ~bus->flowcontrol;
-
- /* Send frames until the limit or some other event */
- for (cnt = 0; (cnt < maxframes) && data_ok(bus);) {
- pkt_num = 1;
- if (down_interruptible(&bus->tx_seq_lock))
- return cnt;
- if (bus->txglom)
- pkt_num = min_t(u8, bus->tx_max - bus->tx_seq,
- bus->sdiodev->txglomsz);
- pkt_num = min_t(u32, pkt_num,
- brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol));
- __skb_queue_head_init(&pktq);
- spin_lock_bh(&bus->txq_lock);
- for (i = 0; i < pkt_num; i++) {
- pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map,
- &prec_out);
- if (pkt == NULL)
- break;
- __skb_queue_tail(&pktq, pkt);
- }
- spin_unlock_bh(&bus->txq_lock);
- if (i == 0) {
- up(&bus->tx_seq_lock);
- break;
- }
-
- ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL);
- up(&bus->tx_seq_lock);
-
- cnt += i;
-
- /* In poll mode, need to check for other events */
- if (!bus->intr) {
- /* Check device status, signal pending interrupt */
- sdio_claim_host(bus->sdiodev->func[1]);
- ret = r_sdreg32(bus, &intstatus,
- offsetof(struct sdpcmd_regs,
- intstatus));
- sdio_release_host(bus->sdiodev->func[1]);
- bus->sdcnt.f2txdata++;
- if (ret != 0)
- break;
- if (intstatus & bus->hostintmask)
- atomic_set(&bus->ipend, 1);
- }
- }
-
- /* Deflow-control stack if needed */
- if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) &&
- bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
- bus->txoff = false;
- brcmf_txflowblock(bus->sdiodev->dev, false);
- }
-
- return cnt;
-}
-
-static int brcmf_sdio_tx_ctrlframe(struct brcmf_sdio *bus, u8 *frame, u16 len)
-{
- u8 doff;
- u16 pad;
- uint retries = 0;
- struct brcmf_sdio_hdrinfo hd_info = {0};
- int ret;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- /* Back the pointer to make room for bus header */
- frame -= bus->tx_hdrlen;
- len += bus->tx_hdrlen;
-
- /* Add alignment padding (optional for ctl frames) */
- doff = ((unsigned long)frame % bus->head_align);
- if (doff) {
- frame -= doff;
- len += doff;
- memset(frame + bus->tx_hdrlen, 0, doff);
- }
-
- /* Round send length to next SDIO block */
- pad = 0;
- if (bus->roundup && bus->blocksize && (len > bus->blocksize)) {
- pad = bus->blocksize - (len % bus->blocksize);
- if ((pad > bus->roundup) || (pad >= bus->blocksize))
- pad = 0;
- } else if (len % bus->head_align) {
- pad = bus->head_align - (len % bus->head_align);
- }
- len += pad;
-
- hd_info.len = len - pad;
- hd_info.channel = SDPCM_CONTROL_CHANNEL;
- hd_info.dat_offset = doff + bus->tx_hdrlen;
- hd_info.seq_num = bus->tx_seq;
- hd_info.lastfrm = true;
- hd_info.tail_pad = pad;
- brcmf_sdio_hdpack(bus, frame, &hd_info);
-
- if (bus->txglom)
- brcmf_sdio_update_hwhdr(frame, len);
-
- brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
- frame, len, "Tx Frame:\n");
- brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) &&
- BRCMF_HDRS_ON(),
- frame, min_t(u16, len, 16), "TxHdr:\n");
-
- do {
- ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len);
-
- if (ret < 0)
- brcmf_sdio_txfail(bus);
- else
- bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP;
- } while (ret < 0 && retries++ < TXRETRIES);
-
- return ret;
-}
-
-static void brcmf_sdio_bus_stop(struct device *dev)
-{
- u32 local_hostintmask;
- u8 saveclk;
- int err;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- if (bus->watchdog_tsk) {
- send_sig(SIGTERM, bus->watchdog_tsk, 1);
- kthread_stop(bus->watchdog_tsk);
- bus->watchdog_tsk = NULL;
- }
-
- if (bus_if->state == BRCMF_BUS_DOWN) {
- sdio_claim_host(sdiodev->func[1]);
-
- /* Enable clock for device interrupts */
- brcmf_sdio_bus_sleep(bus, false, false);
-
- /* Disable and clear interrupts at the chip level also */
- w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask));
- local_hostintmask = bus->hostintmask;
- bus->hostintmask = 0;
-
- /* Force backplane clocks to assure F2 interrupt propagates */
- saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- &err);
- if (!err)
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- (saveclk | SBSDIO_FORCE_HT), &err);
- if (err)
- brcmf_err("Failed to force clock for F2: err %d\n",
- err);
-
- /* Turn off the bus (F2), free any pending packets */
- brcmf_dbg(INTR, "disable SDIO interrupts\n");
- sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
-
- /* Clear any pending interrupts now that F2 is disabled */
- w_sdreg32(bus, local_hostintmask,
- offsetof(struct sdpcmd_regs, intstatus));
-
- sdio_release_host(sdiodev->func[1]);
- }
- /* Clear the data packet queues */
- brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
-
- /* Clear any held glomming stuff */
- if (bus->glomd)
- brcmu_pkt_buf_free_skb(bus->glomd);
- brcmf_sdio_free_glom(bus);
-
- /* Clear rx control and wake any waiters */
- spin_lock_bh(&bus->rxctl_lock);
- bus->rxlen = 0;
- spin_unlock_bh(&bus->rxctl_lock);
- brcmf_sdio_dcmd_resp_wake(bus);
-
- /* Reset some F2 state stuff */
- bus->rxskip = false;
- bus->tx_seq = bus->rx_seq = 0;
-}
-
-static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus)
-{
- unsigned long flags;
-
- if (bus->sdiodev->oob_irq_requested) {
- spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags);
- if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) {
- enable_irq(bus->sdiodev->pdata->oob_irq_nr);
- bus->sdiodev->irq_en = true;
- }
- spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags);
- }
-}
-
-static void atomic_orr(int val, atomic_t *v)
-{
- int old_val;
-
- old_val = atomic_read(v);
- while (atomic_cmpxchg(v, old_val, val | old_val) != old_val)
- old_val = atomic_read(v);
-}
-
-static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus)
-{
- struct brcmf_core *buscore;
- u32 addr;
- unsigned long val;
- int ret;
-
- buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
- addr = buscore->base + offsetof(struct sdpcmd_regs, intstatus);
-
- val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret);
- bus->sdcnt.f1regdata++;
- if (ret != 0)
- return ret;
-
- val &= bus->hostintmask;
- atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE));
-
- /* Clear interrupts */
- if (val) {
- brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret);
- bus->sdcnt.f1regdata++;
- atomic_orr(val, &bus->intstatus);
- }
-
- return ret;
-}
-
-static void brcmf_sdio_dpc(struct brcmf_sdio *bus)
-{
- u32 newstatus = 0;
- unsigned long intstatus;
- uint txlimit = bus->txbound; /* Tx frames to send before resched */
- uint framecnt; /* Temporary counter of tx/rx frames */
- int err = 0;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- sdio_claim_host(bus->sdiodev->func[1]);
-
- /* If waiting for HTAVAIL, check status */
- if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) {
- u8 clkctl, devctl = 0;
-
-#ifdef DEBUG
- /* Check for inconsistent device control */
- devctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_DEVICE_CTL, &err);
-#endif /* DEBUG */
-
- /* Read CSR, if clock on switch to AVAIL, else ignore */
- clkctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, &err);
-
- brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
- devctl, clkctl);
-
- if (SBSDIO_HTAV(clkctl)) {
- devctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_DEVICE_CTL, &err);
- devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
- devctl, &err);
- bus->clkstate = CLK_AVAIL;
- }
- }
-
- /* Make sure backplane clock is on */
- brcmf_sdio_bus_sleep(bus, false, true);
-
- /* Pending interrupt indicates new device status */
- if (atomic_read(&bus->ipend) > 0) {
- atomic_set(&bus->ipend, 0);
- err = brcmf_sdio_intr_rstatus(bus);
- }
-
- /* Start with leftover status bits */
- intstatus = atomic_xchg(&bus->intstatus, 0);
-
- /* Handle flow-control change: read new state in case our ack
- * crossed another change interrupt. If change still set, assume
- * FC ON for safety, let next loop through do the debounce.
- */
- if (intstatus & I_HMB_FC_CHANGE) {
- intstatus &= ~I_HMB_FC_CHANGE;
- err = w_sdreg32(bus, I_HMB_FC_CHANGE,
- offsetof(struct sdpcmd_regs, intstatus));
-
- err = r_sdreg32(bus, &newstatus,
- offsetof(struct sdpcmd_regs, intstatus));
- bus->sdcnt.f1regdata += 2;
- atomic_set(&bus->fcstate,
- !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)));
- intstatus |= (newstatus & bus->hostintmask);
- }
-
- /* Handle host mailbox indication */
- if (intstatus & I_HMB_HOST_INT) {
- intstatus &= ~I_HMB_HOST_INT;
- intstatus |= brcmf_sdio_hostmail(bus);
- }
-
- sdio_release_host(bus->sdiodev->func[1]);
-
- /* Generally don't ask for these, can get CRC errors... */
- if (intstatus & I_WR_OOSYNC) {
- brcmf_err("Dongle reports WR_OOSYNC\n");
- intstatus &= ~I_WR_OOSYNC;
- }
-
- if (intstatus & I_RD_OOSYNC) {
- brcmf_err("Dongle reports RD_OOSYNC\n");
- intstatus &= ~I_RD_OOSYNC;
- }
-
- if (intstatus & I_SBINT) {
- brcmf_err("Dongle reports SBINT\n");
- intstatus &= ~I_SBINT;
- }
-
- /* Would be active due to wake-wlan in gSPI */
- if (intstatus & I_CHIPACTIVE) {
- brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n");
- intstatus &= ~I_CHIPACTIVE;
- }
-
- /* Ignore frame indications if rxskip is set */
- if (bus->rxskip)
- intstatus &= ~I_HMB_FRAME_IND;
-
- /* On frame indication, read available frames */
- if ((intstatus & I_HMB_FRAME_IND) && (bus->clkstate == CLK_AVAIL)) {
- brcmf_sdio_readframes(bus, bus->rxbound);
- if (!bus->rxpending)
- intstatus &= ~I_HMB_FRAME_IND;
- }
-
- /* Keep still-pending events for next scheduling */
- if (intstatus)
- atomic_orr(intstatus, &bus->intstatus);
-
- brcmf_sdio_clrintr(bus);
-
- if (bus->ctrl_frame_stat && (bus->clkstate == CLK_AVAIL) &&
- (down_interruptible(&bus->tx_seq_lock) == 0)) {
- if (data_ok(bus)) {
- sdio_claim_host(bus->sdiodev->func[1]);
- err = brcmf_sdio_tx_ctrlframe(bus, bus->ctrl_frame_buf,
- bus->ctrl_frame_len);
- sdio_release_host(bus->sdiodev->func[1]);
-
- bus->ctrl_frame_stat = false;
- brcmf_sdio_wait_event_wakeup(bus);
- }
- up(&bus->tx_seq_lock);
- }
- /* Send queued frames (limit 1 if rx may still be pending) */
- if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) &&
- brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit &&
- data_ok(bus)) {
- framecnt = bus->rxpending ? min(txlimit, bus->txminmax) :
- txlimit;
- brcmf_sdio_sendfromq(bus, framecnt);
- }
-
- if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) {
- brcmf_err("failed backplane access over SDIO, halting operation\n");
- atomic_set(&bus->intstatus, 0);
- } else if (atomic_read(&bus->intstatus) ||
- atomic_read(&bus->ipend) > 0 ||
- (!atomic_read(&bus->fcstate) &&
- brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
- data_ok(bus))) {
- atomic_inc(&bus->dpc_tskcnt);
- }
-}
-
-static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
-
- return &bus->txq;
-}
-
-static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt)
-{
- int ret = -EBADE;
- uint prec;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
-
- brcmf_dbg(TRACE, "Enter: pkt: data %p len %d\n", pkt->data, pkt->len);
-
- /* Add space for the header */
- skb_push(pkt, bus->tx_hdrlen);
- /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */
-
- prec = prio2prec((pkt->priority & PRIOMASK));
-
- /* Check for existing queue, current flow-control,
- pending event, or pending clock */
- brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq));
- bus->sdcnt.fcqueued++;
-
- /* Priority based enq */
- spin_lock_bh(&bus->txq_lock);
- /* reset bus_flags in packet cb */
- *(u16 *)(pkt->cb) = 0;
- if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) {
- skb_pull(pkt, bus->tx_hdrlen);
- brcmf_err("out of bus->txq !!!\n");
- ret = -ENOSR;
- } else {
- ret = 0;
- }
-
- if (pktq_len(&bus->txq) >= TXHI) {
- bus->txoff = true;
- brcmf_txflowblock(bus->sdiodev->dev, true);
- }
- spin_unlock_bh(&bus->txq_lock);
-
-#ifdef DEBUG
- if (pktq_plen(&bus->txq, prec) > qcount[prec])
- qcount[prec] = pktq_plen(&bus->txq, prec);
-#endif
-
- if (atomic_read(&bus->dpc_tskcnt) == 0) {
- atomic_inc(&bus->dpc_tskcnt);
- queue_work(bus->brcmf_wq, &bus->datawork);
- }
-
- return ret;
-}
-
-#ifdef DEBUG
-#define CONSOLE_LINE_MAX 192
-
-static int brcmf_sdio_readconsole(struct brcmf_sdio *bus)
-{
- struct brcmf_console *c = &bus->console;
- u8 line[CONSOLE_LINE_MAX], ch;
- u32 n, idx, addr;
- int rv;
-
- /* Don't do anything until FWREADY updates console address */
- if (bus->console_addr == 0)
- return 0;
-
- /* Read console log struct */
- addr = bus->console_addr + offsetof(struct rte_console, log_le);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le,
- sizeof(c->log_le));
- if (rv < 0)
- return rv;
-
- /* Allocate console buffer (one time only) */
- if (c->buf == NULL) {
- c->bufsize = le32_to_cpu(c->log_le.buf_size);
- c->buf = kmalloc(c->bufsize, GFP_ATOMIC);
- if (c->buf == NULL)
- return -ENOMEM;
- }
-
- idx = le32_to_cpu(c->log_le.idx);
-
- /* Protect against corrupt value */
- if (idx > c->bufsize)
- return -EBADE;
-
- /* Skip reading the console buffer if the index pointer
- has not moved */
- if (idx == c->last)
- return 0;
-
- /* Read the console buffer */
- addr = le32_to_cpu(c->log_le.buf);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize);
- if (rv < 0)
- return rv;
-
- while (c->last != idx) {
- for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) {
- if (c->last == idx) {
- /* This would output a partial line.
- * Instead, back up
- * the buffer pointer and output this
- * line next time around.
- */
- if (c->last >= n)
- c->last -= n;
- else
- c->last = c->bufsize - n;
- goto break2;
- }
- ch = c->buf[c->last];
- c->last = (c->last + 1) % c->bufsize;
- if (ch == '\n')
- break;
- line[n] = ch;
- }
-
- if (n > 0) {
- if (line[n - 1] == '\r')
- n--;
- line[n] = 0;
- pr_debug("CONSOLE: %s\n", line);
- }
- }
-break2:
-
- return 0;
-}
-#endif /* DEBUG */
-
-static int
-brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
- int ret = -1;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- if (down_interruptible(&bus->tx_seq_lock))
- return -EINTR;
-
- if (!data_ok(bus)) {
- brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n",
- bus->tx_max, bus->tx_seq);
- up(&bus->tx_seq_lock);
- /* Send from dpc */
- bus->ctrl_frame_buf = msg;
- bus->ctrl_frame_len = msglen;
- bus->ctrl_frame_stat = true;
-
- wait_event_interruptible_timeout(bus->ctrl_wait,
- !bus->ctrl_frame_stat,
- msecs_to_jiffies(2000));
-
- if (!bus->ctrl_frame_stat) {
- brcmf_dbg(SDIO, "ctrl_frame_stat == false\n");
- ret = 0;
- } else {
- brcmf_dbg(SDIO, "ctrl_frame_stat == true\n");
- bus->ctrl_frame_stat = false;
- if (down_interruptible(&bus->tx_seq_lock))
- return -EINTR;
- ret = -1;
- }
- }
- if (ret == -1) {
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_bus_sleep(bus, false, false);
- ret = brcmf_sdio_tx_ctrlframe(bus, msg, msglen);
- sdio_release_host(bus->sdiodev->func[1]);
- up(&bus->tx_seq_lock);
- }
-
- if (ret)
- bus->sdcnt.tx_ctlerrs++;
- else
- bus->sdcnt.tx_ctlpkts++;
-
- return ret ? -EIO : 0;
-}
-
-#ifdef DEBUG
-static int brcmf_sdio_dump_console(struct seq_file *seq, struct brcmf_sdio *bus,
- struct sdpcm_shared *sh)
-{
- u32 addr, console_ptr, console_size, console_index;
- char *conbuf = NULL;
- __le32 sh_val;
- int rv;
-
- /* obtain console information from device memory */
- addr = sh->console_addr + offsetof(struct rte_console, log_le);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
- (u8 *)&sh_val, sizeof(u32));
- if (rv < 0)
- return rv;
- console_ptr = le32_to_cpu(sh_val);
-
- addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
- (u8 *)&sh_val, sizeof(u32));
- if (rv < 0)
- return rv;
- console_size = le32_to_cpu(sh_val);
-
- addr = sh->console_addr + offsetof(struct rte_console, log_le.idx);
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
- (u8 *)&sh_val, sizeof(u32));
- if (rv < 0)
- return rv;
- console_index = le32_to_cpu(sh_val);
-
- /* allocate buffer for console data */
- if (console_size <= CONSOLE_BUFFER_MAX)
- conbuf = vzalloc(console_size+1);
-
- if (!conbuf)
- return -ENOMEM;
-
- /* obtain the console data from device */
- conbuf[console_size] = '\0';
- rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf,
- console_size);
- if (rv < 0)
- goto done;
-
- rv = seq_write(seq, conbuf + console_index,
- console_size - console_index);
- if (rv < 0)
- goto done;
-
- if (console_index > 0)
- rv = seq_write(seq, conbuf, console_index - 1);
-
-done:
- vfree(conbuf);
- return rv;
-}
-
-static int brcmf_sdio_trap_info(struct seq_file *seq, struct brcmf_sdio *bus,
- struct sdpcm_shared *sh)
-{
- int error;
- struct brcmf_trap_info tr;
-
- if ((sh->flags & SDPCM_SHARED_TRAP) == 0) {
- brcmf_dbg(INFO, "no trap in firmware\n");
- return 0;
- }
-
- error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr,
- sizeof(struct brcmf_trap_info));
- if (error < 0)
- return error;
-
- seq_printf(seq,
- "dongle trap info: type 0x%x @ epc 0x%08x\n"
- " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n"
- " lr 0x%08x pc 0x%08x offset 0x%x\n"
- " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n"
- " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n",
- le32_to_cpu(tr.type), le32_to_cpu(tr.epc),
- le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr),
- le32_to_cpu(tr.r13), le32_to_cpu(tr.r14),
- le32_to_cpu(tr.pc), sh->trap_addr,
- le32_to_cpu(tr.r0), le32_to_cpu(tr.r1),
- le32_to_cpu(tr.r2), le32_to_cpu(tr.r3),
- le32_to_cpu(tr.r4), le32_to_cpu(tr.r5),
- le32_to_cpu(tr.r6), le32_to_cpu(tr.r7));
-
- return 0;
-}
-
-static int brcmf_sdio_assert_info(struct seq_file *seq, struct brcmf_sdio *bus,
- struct sdpcm_shared *sh)
-{
- int error = 0;
- char file[80] = "?";
- char expr[80] = "<???>";
-
- if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) {
- brcmf_dbg(INFO, "firmware not built with -assert\n");
- return 0;
- } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) {
- brcmf_dbg(INFO, "no assert in dongle\n");
- return 0;
- }
-
- sdio_claim_host(bus->sdiodev->func[1]);
- if (sh->assert_file_addr != 0) {
- error = brcmf_sdiod_ramrw(bus->sdiodev, false,
- sh->assert_file_addr, (u8 *)file, 80);
- if (error < 0)
- return error;
- }
- if (sh->assert_exp_addr != 0) {
- error = brcmf_sdiod_ramrw(bus->sdiodev, false,
- sh->assert_exp_addr, (u8 *)expr, 80);
- if (error < 0)
- return error;
- }
- sdio_release_host(bus->sdiodev->func[1]);
-
- seq_printf(seq, "dongle assert: %s:%d: assert(%s)\n",
- file, sh->assert_line, expr);
- return 0;
-}
-
-static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
-{
- int error;
- struct sdpcm_shared sh;
-
- error = brcmf_sdio_readshared(bus, &sh);
-
- if (error < 0)
- return error;
-
- if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0)
- brcmf_dbg(INFO, "firmware not built with -assert\n");
- else if (sh.flags & SDPCM_SHARED_ASSERT)
- brcmf_err("assertion in dongle\n");
-
- if (sh.flags & SDPCM_SHARED_TRAP)
- brcmf_err("firmware trap in dongle\n");
-
- return 0;
-}
-
-static int brcmf_sdio_died_dump(struct seq_file *seq, struct brcmf_sdio *bus)
-{
- int error = 0;
- struct sdpcm_shared sh;
-
- error = brcmf_sdio_readshared(bus, &sh);
- if (error < 0)
- goto done;
-
- error = brcmf_sdio_assert_info(seq, bus, &sh);
- if (error < 0)
- goto done;
-
- error = brcmf_sdio_trap_info(seq, bus, &sh);
- if (error < 0)
- goto done;
-
- error = brcmf_sdio_dump_console(seq, bus, &sh);
-
-done:
- return error;
-}
-
-static int brcmf_sdio_forensic_read(struct seq_file *seq, void *data)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
- struct brcmf_sdio *bus = bus_if->bus_priv.sdio->bus;
-
- return brcmf_sdio_died_dump(seq, bus);
-}
-
-static int brcmf_debugfs_sdio_count_read(struct seq_file *seq, void *data)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio_count *sdcnt = &sdiodev->bus->sdcnt;
-
- seq_printf(seq,
- "intrcount: %u\nlastintrs: %u\n"
- "pollcnt: %u\nregfails: %u\n"
- "tx_sderrs: %u\nfcqueued: %u\n"
- "rxrtx: %u\nrx_toolong: %u\n"
- "rxc_errors: %u\nrx_hdrfail: %u\n"
- "rx_badhdr: %u\nrx_badseq: %u\n"
- "fc_rcvd: %u\nfc_xoff: %u\n"
- "fc_xon: %u\nrxglomfail: %u\n"
- "rxglomframes: %u\nrxglompkts: %u\n"
- "f2rxhdrs: %u\nf2rxdata: %u\n"
- "f2txdata: %u\nf1regdata: %u\n"
- "tickcnt: %u\ntx_ctlerrs: %lu\n"
- "tx_ctlpkts: %lu\nrx_ctlerrs: %lu\n"
- "rx_ctlpkts: %lu\nrx_readahead: %lu\n",
- sdcnt->intrcount, sdcnt->lastintrs,
- sdcnt->pollcnt, sdcnt->regfails,
- sdcnt->tx_sderrs, sdcnt->fcqueued,
- sdcnt->rxrtx, sdcnt->rx_toolong,
- sdcnt->rxc_errors, sdcnt->rx_hdrfail,
- sdcnt->rx_badhdr, sdcnt->rx_badseq,
- sdcnt->fc_rcvd, sdcnt->fc_xoff,
- sdcnt->fc_xon, sdcnt->rxglomfail,
- sdcnt->rxglomframes, sdcnt->rxglompkts,
- sdcnt->f2rxhdrs, sdcnt->f2rxdata,
- sdcnt->f2txdata, sdcnt->f1regdata,
- sdcnt->tickcnt, sdcnt->tx_ctlerrs,
- sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
- sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
-
- return 0;
-}
-
-static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
-{
- struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr;
- struct dentry *dentry = brcmf_debugfs_get_devdir(drvr);
-
- if (IS_ERR_OR_NULL(dentry))
- return;
-
- brcmf_debugfs_add_entry(drvr, "forensics", brcmf_sdio_forensic_read);
- brcmf_debugfs_add_entry(drvr, "counters",
- brcmf_debugfs_sdio_count_read);
- debugfs_create_u32("console_interval", 0644, dentry,
- &bus->console_interval);
-}
-#else
-static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
-{
- return 0;
-}
-
-static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
-{
-}
-#endif /* DEBUG */
-
-static int
-brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen)
-{
- int timeleft;
- uint rxlen = 0;
- bool pending;
- u8 *buf;
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- /* Wait until control frame is available */
- timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending);
-
- spin_lock_bh(&bus->rxctl_lock);
- rxlen = bus->rxlen;
- memcpy(msg, bus->rxctl, min(msglen, rxlen));
- bus->rxctl = NULL;
- buf = bus->rxctl_orig;
- bus->rxctl_orig = NULL;
- bus->rxlen = 0;
- spin_unlock_bh(&bus->rxctl_lock);
- vfree(buf);
-
- if (rxlen) {
- brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n",
- rxlen, msglen);
- } else if (timeleft == 0) {
- brcmf_err("resumed on timeout\n");
- brcmf_sdio_checkdied(bus);
- } else if (pending) {
- brcmf_dbg(CTL, "cancelled\n");
- return -ERESTARTSYS;
- } else {
- brcmf_dbg(CTL, "resumed for unknown reason?\n");
- brcmf_sdio_checkdied(bus);
- }
-
- if (rxlen)
- bus->sdcnt.rx_ctlpkts++;
- else
- bus->sdcnt.rx_ctlerrs++;
-
- return rxlen ? (int)rxlen : -ETIMEDOUT;
-}
-
-#ifdef DEBUG
-static bool
-brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
- u8 *ram_data, uint ram_sz)
-{
- char *ram_cmp;
- int err;
- bool ret = true;
- int address;
- int offset;
- int len;
-
- /* read back and verify */
- brcmf_dbg(INFO, "Compare RAM dl & ul at 0x%08x; size=%d\n", ram_addr,
- ram_sz);
- ram_cmp = kmalloc(MEMBLOCK, GFP_KERNEL);
- /* do not proceed while no memory but */
- if (!ram_cmp)
- return true;
-
- address = ram_addr;
- offset = 0;
- while (offset < ram_sz) {
- len = ((offset + MEMBLOCK) < ram_sz) ? MEMBLOCK :
- ram_sz - offset;
- err = brcmf_sdiod_ramrw(sdiodev, false, address, ram_cmp, len);
- if (err) {
- brcmf_err("error %d on reading %d membytes at 0x%08x\n",
- err, len, address);
- ret = false;
- break;
- } else if (memcmp(ram_cmp, &ram_data[offset], len)) {
- brcmf_err("Downloaded RAM image is corrupted, block offset is %d, len is %d\n",
- offset, len);
- ret = false;
- break;
- }
- offset += len;
- address += len;
- }
-
- kfree(ram_cmp);
-
- return ret;
-}
-#else /* DEBUG */
-static bool
-brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
- u8 *ram_data, uint ram_sz)
-{
- return true;
-}
-#endif /* DEBUG */
-
-static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus,
- const struct firmware *fw)
-{
- int err;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- err = brcmf_sdiod_ramrw(bus->sdiodev, true, bus->ci->rambase,
- (u8 *)fw->data, fw->size);
- if (err)
- brcmf_err("error %d on writing %d membytes at 0x%08x\n",
- err, (int)fw->size, bus->ci->rambase);
- else if (!brcmf_sdio_verifymemory(bus->sdiodev, bus->ci->rambase,
- (u8 *)fw->data, fw->size))
- err = -EIO;
-
- return err;
-}
-
-static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus,
- void *vars, u32 varsz)
-{
- int address;
- int err;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- address = bus->ci->ramsize - varsz + bus->ci->rambase;
- err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, vars, varsz);
- if (err)
- brcmf_err("error %d on writing %d nvram bytes at 0x%08x\n",
- err, varsz, address);
- else if (!brcmf_sdio_verifymemory(bus->sdiodev, address, vars, varsz))
- err = -EIO;
-
- return err;
-}
-
-static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus,
- const struct firmware *fw,
- void *nvram, u32 nvlen)
-{
- int bcmerror = -EFAULT;
- u32 rstvec;
-
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
-
- /* Keep arm in reset */
- brcmf_chip_enter_download(bus->ci);
-
- rstvec = get_unaligned_le32(fw->data);
- brcmf_dbg(SDIO, "firmware rstvec: %x\n", rstvec);
-
- bcmerror = brcmf_sdio_download_code_file(bus, fw);
- release_firmware(fw);
- if (bcmerror) {
- brcmf_err("dongle image file download failed\n");
- brcmf_fw_nvram_free(nvram);
- goto err;
- }
-
- bcmerror = brcmf_sdio_download_nvram(bus, nvram, nvlen);
- brcmf_fw_nvram_free(nvram);
- if (bcmerror) {
- brcmf_err("dongle nvram file download failed\n");
- goto err;
- }
-
- /* Take arm out of reset */
- if (!brcmf_chip_exit_download(bus->ci, rstvec)) {
- brcmf_err("error getting out of ARM core reset\n");
- goto err;
- }
-
- /* Allow HT Clock now that the ARM is running. */
- brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD);
- bcmerror = 0;
-
-err:
- brcmf_sdio_clkctl(bus, CLK_SDONLY, false);
- sdio_release_host(bus->sdiodev->func[1]);
- return bcmerror;
-}
-
-static void brcmf_sdio_sr_init(struct brcmf_sdio *bus)
-{
- int err = 0;
- u8 val;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err);
- if (err) {
- brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n");
- return;
- }
-
- val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT;
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err);
- if (err) {
- brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n");
- return;
- }
-
- /* Add CMD14 Support */
- brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP,
- (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT |
- SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT),
- &err);
- if (err) {
- brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n");
- return;
- }
-
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- SBSDIO_FORCE_HT, &err);
- if (err) {
- brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n");
- return;
- }
-
- /* set flag */
- bus->sr_enabled = true;
- brcmf_dbg(INFO, "SR enabled\n");
-}
-
-/* enable KSO bit */
-static int brcmf_sdio_kso_init(struct brcmf_sdio *bus)
-{
- u8 val;
- int err = 0;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- /* KSO bit added in SDIO core rev 12 */
- if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12)
- return 0;
-
- val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err);
- if (err) {
- brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n");
- return err;
- }
-
- if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) {
- val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN <<
- SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
- val, &err);
- if (err) {
- brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n");
- return err;
- }
- }
-
- return 0;
-}
-
-
-static int brcmf_sdio_bus_preinit(struct device *dev)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
- uint pad_size;
- u32 value;
- int err;
-
- /* the commands below use the terms tx and rx from
- * a device perspective, ie. bus:txglom affects the
- * bus transfers from device to host.
- */
- if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) {
- /* for sdio core rev < 12, disable txgloming */
- value = 0;
- err = brcmf_iovar_data_set(dev, "bus:txglom", &value,
- sizeof(u32));
- } else {
- /* otherwise, set txglomalign */
- value = 4;
- if (sdiodev->pdata)
- value = sdiodev->pdata->sd_sgentry_align;
- /* SDIO ADMA requires at least 32 bit alignment */
- value = max_t(u32, value, 4);
- err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value,
- sizeof(u32));
- }
-
- if (err < 0)
- goto done;
-
- bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
- if (sdiodev->sg_support) {
- bus->txglom = false;
- value = 1;
- pad_size = bus->sdiodev->func[2]->cur_blksize << 1;
- err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom",
- &value, sizeof(u32));
- if (err < 0) {
- /* bus:rxglom is allowed to fail */
- err = 0;
- } else {
- bus->txglom = true;
- bus->tx_hdrlen += SDPCM_HWEXT_LEN;
- }
- }
- brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen);
-
-done:
- return err;
-}
-
-void brcmf_sdio_isr(struct brcmf_sdio *bus)
-{
- brcmf_dbg(TRACE, "Enter\n");
-
- if (!bus) {
- brcmf_err("bus is null pointer, exiting\n");
- return;
- }
-
- if (!brcmf_bus_ready(bus->sdiodev->bus_if)) {
- brcmf_err("bus is down. we have nothing to do\n");
- return;
- }
- /* Count the interrupt call */
- bus->sdcnt.intrcount++;
- if (in_interrupt())
- atomic_set(&bus->ipend, 1);
- else
- if (brcmf_sdio_intr_rstatus(bus)) {
- brcmf_err("failed backplane access\n");
- }
-
- /* Disable additional interrupts (is this needed now)? */
- if (!bus->intr)
- brcmf_err("isr w/o interrupt configured!\n");
-
- atomic_inc(&bus->dpc_tskcnt);
- queue_work(bus->brcmf_wq, &bus->datawork);
-}
-
-static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus)
-{
-#ifdef DEBUG
- struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev);
-#endif /* DEBUG */
-
- brcmf_dbg(TIMER, "Enter\n");
-
- /* Poll period: check device if appropriate. */
- if (!bus->sr_enabled &&
- bus->poll && (++bus->polltick >= bus->pollrate)) {
- u32 intstatus = 0;
-
- /* Reset poll tick */
- bus->polltick = 0;
-
- /* Check device if no interrupts */
- if (!bus->intr ||
- (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) {
-
- if (atomic_read(&bus->dpc_tskcnt) == 0) {
- u8 devpend;
-
- sdio_claim_host(bus->sdiodev->func[1]);
- devpend = brcmf_sdiod_regrb(bus->sdiodev,
- SDIO_CCCR_INTx,
- NULL);
- sdio_release_host(bus->sdiodev->func[1]);
- intstatus =
- devpend & (INTR_STATUS_FUNC1 |
- INTR_STATUS_FUNC2);
- }
-
- /* If there is something, make like the ISR and
- schedule the DPC */
- if (intstatus) {
- bus->sdcnt.pollcnt++;
- atomic_set(&bus->ipend, 1);
-
- atomic_inc(&bus->dpc_tskcnt);
- queue_work(bus->brcmf_wq, &bus->datawork);
- }
- }
-
- /* Update interrupt tracking */
- bus->sdcnt.lastintrs = bus->sdcnt.intrcount;
- }
-#ifdef DEBUG
- /* Poll for console output periodically */
- if (bus_if && bus_if->state == BRCMF_BUS_DATA &&
- bus->console_interval != 0) {
- bus->console.count += BRCMF_WD_POLL_MS;
- if (bus->console.count >= bus->console_interval) {
- bus->console.count -= bus->console_interval;
- sdio_claim_host(bus->sdiodev->func[1]);
- /* Make sure backplane clock is on */
- brcmf_sdio_bus_sleep(bus, false, false);
- if (brcmf_sdio_readconsole(bus) < 0)
- /* stop on error */
- bus->console_interval = 0;
- sdio_release_host(bus->sdiodev->func[1]);
- }
- }
-#endif /* DEBUG */
-
- /* On idle timeout clear activity flag and/or turn off clock */
- if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) {
- if (++bus->idlecount >= bus->idletime) {
- bus->idlecount = 0;
- if (bus->activity) {
- bus->activity = false;
- brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
- } else {
- brcmf_dbg(SDIO, "idle\n");
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_bus_sleep(bus, true, false);
- sdio_release_host(bus->sdiodev->func[1]);
- }
- }
- }
-
- return (atomic_read(&bus->ipend) > 0);
-}
-
-static void brcmf_sdio_dataworker(struct work_struct *work)
-{
- struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio,
- datawork);
-
- while (atomic_read(&bus->dpc_tskcnt)) {
- atomic_set(&bus->dpc_tskcnt, 0);
- brcmf_sdio_dpc(bus);
- }
-}
-
-static void
-brcmf_sdio_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
- struct brcmf_chip *ci, u32 drivestrength)
-{
- const struct sdiod_drive_str *str_tab = NULL;
- u32 str_mask;
- u32 str_shift;
- u32 base;
- u32 i;
- u32 drivestrength_sel = 0;
- u32 cc_data_temp;
- u32 addr;
-
- if (!(ci->cc_caps & CC_CAP_PMU))
- return;
-
- switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) {
- case SDIOD_DRVSTR_KEY(BRCM_CC_4330_CHIP_ID, 12):
- str_tab = sdiod_drvstr_tab1_1v8;
- str_mask = 0x00003800;
- str_shift = 11;
- break;
- case SDIOD_DRVSTR_KEY(BRCM_CC_4334_CHIP_ID, 17):
- str_tab = sdiod_drvstr_tab6_1v8;
- str_mask = 0x00001800;
- str_shift = 11;
- break;
- case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17):
- /* note: 43143 does not support tristate */
- i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1;
- if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) {
- str_tab = sdiod_drvstr_tab2_3v3;
- str_mask = 0x00000007;
- str_shift = 0;
- } else
- brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n",
- ci->name, drivestrength);
- break;
- case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13):
- str_tab = sdiod_drive_strength_tab5_1v8;
- str_mask = 0x00003800;
- str_shift = 11;
- break;
- default:
- brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
- ci->name, ci->chiprev, ci->pmurev);
- break;
- }
-
- if (str_tab != NULL) {
- for (i = 0; str_tab[i].strength != 0; i++) {
- if (drivestrength >= str_tab[i].strength) {
- drivestrength_sel = str_tab[i].sel;
- break;
- }
- }
- base = brcmf_chip_get_chipcommon(ci)->base;
- addr = CORE_CC_REG(base, chipcontrol_addr);
- brcmf_sdiod_regwl(sdiodev, addr, 1, NULL);
- cc_data_temp = brcmf_sdiod_regrl(sdiodev, addr, NULL);
- cc_data_temp &= ~str_mask;
- drivestrength_sel <<= str_shift;
- cc_data_temp |= drivestrength_sel;
- brcmf_sdiod_regwl(sdiodev, addr, cc_data_temp, NULL);
-
- brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n",
- str_tab[i].strength, drivestrength, cc_data_temp);
- }
-}
-
-static int brcmf_sdio_buscoreprep(void *ctx)
-{
- struct brcmf_sdio_dev *sdiodev = ctx;
- int err = 0;
- u8 clkval, clkset;
-
- /* Try forcing SDIO core to do ALPAvail request only */
- clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ;
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
- if (err) {
- brcmf_err("error writing for HT off\n");
- return err;
- }
-
- /* If register supported, wait for ALPAvail and then force ALP */
- /* This may take up to 15 milliseconds */
- clkval = brcmf_sdiod_regrb(sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, NULL);
-
- if ((clkval & ~SBSDIO_AVBITS) != clkset) {
- brcmf_err("ChipClkCSR access: wrote 0x%02x read 0x%02x\n",
- clkset, clkval);
- return -EACCES;
- }
-
- SPINWAIT(((clkval = brcmf_sdiod_regrb(sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, NULL)),
- !SBSDIO_ALPAV(clkval)),
- PMU_MAX_TRANSITION_DLY);
- if (!SBSDIO_ALPAV(clkval)) {
- brcmf_err("timeout on ALPAV wait, clkval 0x%02x\n",
- clkval);
- return -EBUSY;
- }
-
- clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP;
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
- udelay(65);
-
- /* Also, disable the extra SDIO pull-ups */
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SDIOPULLUP, 0, NULL);
-
- return 0;
-}
-
-static void brcmf_sdio_buscore_exitdl(void *ctx, struct brcmf_chip *chip,
- u32 rstvec)
-{
- struct brcmf_sdio_dev *sdiodev = ctx;
- struct brcmf_core *core;
- u32 reg_addr;
-
- /* clear all interrupts */
- core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV);
- reg_addr = core->base + offsetof(struct sdpcmd_regs, intstatus);
- brcmf_sdiod_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL);
-
- if (rstvec)
- /* Write reset vector to address 0 */
- brcmf_sdiod_ramrw(sdiodev, true, 0, (void *)&rstvec,
- sizeof(rstvec));
-}
-
-static u32 brcmf_sdio_buscore_read32(void *ctx, u32 addr)
-{
- struct brcmf_sdio_dev *sdiodev = ctx;
- u32 val, rev;
-
- val = brcmf_sdiod_regrl(sdiodev, addr, NULL);
- if (sdiodev->func[0]->device == BRCM_SDIO_4335_4339_DEVICE_ID &&
- addr == CORE_CC_REG(SI_ENUM_BASE, chipid)) {
- rev = (val & CID_REV_MASK) >> CID_REV_SHIFT;
- if (rev >= 2) {
- val &= ~CID_ID_MASK;
- val |= BRCM_CC_4339_CHIP_ID;
- }
- }
- return val;
-}
-
-static void brcmf_sdio_buscore_write32(void *ctx, u32 addr, u32 val)
-{
- struct brcmf_sdio_dev *sdiodev = ctx;
-
- brcmf_sdiod_regwl(sdiodev, addr, val, NULL);
-}
-
-static const struct brcmf_buscore_ops brcmf_sdio_buscore_ops = {
- .prepare = brcmf_sdio_buscoreprep,
- .exit_dl = brcmf_sdio_buscore_exitdl,
- .read32 = brcmf_sdio_buscore_read32,
- .write32 = brcmf_sdio_buscore_write32,
-};
-
-static bool
-brcmf_sdio_probe_attach(struct brcmf_sdio *bus)
-{
- u8 clkctl = 0;
- int err = 0;
- int reg_addr;
- u32 reg_val;
- u32 drivestrength;
-
- sdio_claim_host(bus->sdiodev->func[1]);
-
- pr_debug("F1 signature read @0x18000000=0x%4x\n",
- brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL));
-
- /*
- * Force PLL off until brcmf_chip_attach()
- * programs PLL control regs
- */
-
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- BRCMF_INIT_CLKCTL1, &err);
- if (!err)
- clkctl = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, &err);
-
- if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) {
- brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n",
- err, BRCMF_INIT_CLKCTL1, clkctl);
- goto fail;
- }
-
- /* SDIO register access works so moving
- * state from UNKNOWN to DOWN.
- */
- brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN);
-
- bus->ci = brcmf_chip_attach(bus->sdiodev, &brcmf_sdio_buscore_ops);
- if (IS_ERR(bus->ci)) {
- brcmf_err("brcmf_chip_attach failed!\n");
- bus->ci = NULL;
- goto fail;
- }
-
- if (brcmf_sdio_kso_init(bus)) {
- brcmf_err("error enabling KSO\n");
- goto fail;
- }
-
- if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength))
- drivestrength = bus->sdiodev->pdata->drive_strength;
- else
- drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH;
- brcmf_sdio_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength);
-
- /* Get info on the SOCRAM cores... */
- bus->ramsize = bus->ci->ramsize;
- if (!(bus->ramsize)) {
- brcmf_err("failed to find SOCRAM memory!\n");
- goto fail;
- }
-
- /* Set card control so an SDIO card reset does a WLAN backplane reset */
- reg_val = brcmf_sdiod_regrb(bus->sdiodev,
- SDIO_CCCR_BRCM_CARDCTRL, &err);
- if (err)
- goto fail;
-
- reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET;
-
- brcmf_sdiod_regwb(bus->sdiodev,
- SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err);
- if (err)
- goto fail;
-
- /* set PMUControl so a backplane reset does PMU state reload */
- reg_addr = CORE_CC_REG(brcmf_chip_get_chipcommon(bus->ci)->base,
- pmucontrol);
- reg_val = brcmf_sdiod_regrl(bus->sdiodev, reg_addr, &err);
- if (err)
- goto fail;
-
- reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT);
-
- brcmf_sdiod_regwl(bus->sdiodev, reg_addr, reg_val, &err);
- if (err)
- goto fail;
-
- sdio_release_host(bus->sdiodev->func[1]);
-
- brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
-
- /* allocate header buffer */
- bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL);
- if (!bus->hdrbuf)
- return false;
- /* Locate an appropriately-aligned portion of hdrbuf */
- bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0],
- bus->head_align);
-
- /* Set the poll and/or interrupt flags */
- bus->intr = true;
- bus->poll = false;
- if (bus->poll)
- bus->pollrate = 1;
-
- return true;
-
-fail:
- sdio_release_host(bus->sdiodev->func[1]);
- return false;
-}
-
-static int
-brcmf_sdio_watchdog_thread(void *data)
-{
- struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
-
- allow_signal(SIGTERM);
- /* Run until signal received */
- while (1) {
- if (kthread_should_stop())
- break;
- if (!wait_for_completion_interruptible(&bus->watchdog_wait)) {
- brcmf_sdio_bus_watchdog(bus);
- /* Count the tick for reference */
- bus->sdcnt.tickcnt++;
- reinit_completion(&bus->watchdog_wait);
- } else
- break;
- }
- return 0;
-}
-
-static void
-brcmf_sdio_watchdog(unsigned long data)
-{
- struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
-
- if (bus->watchdog_tsk) {
- complete(&bus->watchdog_wait);
- /* Reschedule the watchdog */
- if (bus->wd_timer_valid)
- mod_timer(&bus->timer,
- jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
- }
-}
-
-static struct brcmf_bus_ops brcmf_sdio_bus_ops = {
- .stop = brcmf_sdio_bus_stop,
- .preinit = brcmf_sdio_bus_preinit,
- .txdata = brcmf_sdio_bus_txdata,
- .txctl = brcmf_sdio_bus_txctl,
- .rxctl = brcmf_sdio_bus_rxctl,
- .gettxq = brcmf_sdio_bus_gettxq,
- .wowl_config = brcmf_sdio_wowl_config
-};
-
-static void brcmf_sdio_firmware_callback(struct device *dev,
- const struct firmware *code,
- void *nvram, u32 nvram_len)
-{
- struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
- struct brcmf_sdio *bus = sdiodev->bus;
- int err = 0;
- u8 saveclk;
-
- brcmf_dbg(TRACE, "Enter: dev=%s\n", dev_name(dev));
-
- /* try to download image and nvram to the dongle */
- if (bus_if->state == BRCMF_BUS_DOWN) {
- bus->alp_only = true;
- err = brcmf_sdio_download_firmware(bus, code, nvram, nvram_len);
- if (err)
- goto fail;
- bus->alp_only = false;
- }
-
- if (!bus_if->drvr)
- return;
-
- /* Start the watchdog timer */
- bus->sdcnt.tickcnt = 0;
- brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
-
- sdio_claim_host(sdiodev->func[1]);
-
- /* Make sure backplane clock is on, needed to generate F2 interrupt */
- brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
- if (bus->clkstate != CLK_AVAIL)
- goto release;
-
- /* Force clocks on backplane to be sure F2 interrupt propagates */
- saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err);
- if (!err) {
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- (saveclk | SBSDIO_FORCE_HT), &err);
- }
- if (err) {
- brcmf_err("Failed to force clock for F2: err %d\n", err);
- goto release;
- }
-
- /* Enable function 2 (frame transfers) */
- w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT,
- offsetof(struct sdpcmd_regs, tosbmailboxdata));
- err = sdio_enable_func(sdiodev->func[SDIO_FUNC_2]);
-
-
- brcmf_dbg(INFO, "enable F2: err=%d\n", err);
-
- /* If F2 successfully enabled, set core and enable interrupts */
- if (!err) {
- /* Set up the interrupt mask and enable interrupts */
- bus->hostintmask = HOSTINTMASK;
- w_sdreg32(bus, bus->hostintmask,
- offsetof(struct sdpcmd_regs, hostintmask));
-
- brcmf_sdiod_regwb(sdiodev, SBSDIO_WATERMARK, 8, &err);
- } else {
- /* Disable F2 again */
- sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
- goto release;
- }
-
- if (brcmf_chip_sr_capable(bus->ci)) {
- brcmf_sdio_sr_init(bus);
- } else {
- /* Restore previous clock setting */
- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- saveclk, &err);
- }
-
- if (err == 0) {
- err = brcmf_sdiod_intr_register(sdiodev);
- if (err != 0)
- brcmf_err("intr register failed:%d\n", err);
- }
-
- /* If we didn't come up, turn off backplane clock */
- if (err != 0)
- brcmf_sdio_clkctl(bus, CLK_NONE, false);
-
- sdio_release_host(sdiodev->func[1]);
-
- err = brcmf_bus_start(dev);
- if (err != 0) {
- brcmf_err("dongle is not responding\n");
- goto fail;
- }
- return;
-
-release:
- sdio_release_host(sdiodev->func[1]);
-fail:
- brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
- device_release_driver(dev);
-}
-
-struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
-{
- int ret;
- struct brcmf_sdio *bus;
-
- brcmf_dbg(TRACE, "Enter\n");
-
- /* Allocate private bus interface state */
- bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC);
- if (!bus)
- goto fail;
-
- bus->sdiodev = sdiodev;
- sdiodev->bus = bus;
- skb_queue_head_init(&bus->glom);
- bus->txbound = BRCMF_TXBOUND;
- bus->rxbound = BRCMF_RXBOUND;
- bus->txminmax = BRCMF_TXMINMAX;
- bus->tx_seq = SDPCM_SEQ_WRAP - 1;
-
- /* platform specific configuration:
- * alignments must be at least 4 bytes for ADMA
- */
- bus->head_align = ALIGNMENT;
- bus->sgentry_align = ALIGNMENT;
- if (sdiodev->pdata) {
- if (sdiodev->pdata->sd_head_align > ALIGNMENT)
- bus->head_align = sdiodev->pdata->sd_head_align;
- if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT)
- bus->sgentry_align = sdiodev->pdata->sd_sgentry_align;
- }
-
- INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
- bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq");
- if (bus->brcmf_wq == NULL) {
- brcmf_err("insufficient memory to create txworkqueue\n");
- goto fail;
- }
-
- /* attempt to attach to the dongle */
- if (!(brcmf_sdio_probe_attach(bus))) {
- brcmf_err("brcmf_sdio_probe_attach failed\n");
- goto fail;
- }
-
- spin_lock_init(&bus->rxctl_lock);
- spin_lock_init(&bus->txq_lock);
- sema_init(&bus->tx_seq_lock, 1);
- init_waitqueue_head(&bus->ctrl_wait);
- init_waitqueue_head(&bus->dcmd_resp_wait);
-
- /* Set up the watchdog timer */
- init_timer(&bus->timer);
- bus->timer.data = (unsigned long)bus;
- bus->timer.function = brcmf_sdio_watchdog;
-
- /* Initialize watchdog thread */
- init_completion(&bus->watchdog_wait);
- bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread,
- bus, "brcmf_watchdog");
- if (IS_ERR(bus->watchdog_tsk)) {
- pr_warn("brcmf_watchdog thread failed to start\n");
- bus->watchdog_tsk = NULL;
- }
- /* Initialize DPC thread */
- atomic_set(&bus->dpc_tskcnt, 0);
-
- /* Assign bus interface call back */
- bus->sdiodev->bus_if->dev = bus->sdiodev->dev;
- bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops;
- bus->sdiodev->bus_if->chip = bus->ci->chip;
- bus->sdiodev->bus_if->chiprev = bus->ci->chiprev;
-
- /* default sdio bus header length for tx packet */
- bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
-
- /* Attach to the common layer, reserve hdr space */
- ret = brcmf_attach(bus->sdiodev->dev);
- if (ret != 0) {
- brcmf_err("brcmf_attach failed\n");
- goto fail;
- }
-
- /* Query the F2 block size, set roundup accordingly */
- bus->blocksize = bus->sdiodev->func[2]->cur_blksize;
- bus->roundup = min(max_roundup, bus->blocksize);
-
- /* Allocate buffers */
- if (bus->sdiodev->bus_if->maxctl) {
- bus->sdiodev->bus_if->maxctl += bus->roundup;
- bus->rxblen =
- roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN),
- ALIGNMENT) + bus->head_align;
- bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC);
- if (!(bus->rxbuf)) {
- brcmf_err("rxbuf allocation failed\n");
- goto fail;
- }
- }
-
- sdio_claim_host(bus->sdiodev->func[1]);
-
- /* Disable F2 to clear any intermediate frame state on the dongle */
- sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
-
- bus->rxflow = false;
-
- /* Done with backplane-dependent accesses, can drop clock... */
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
-
- sdio_release_host(bus->sdiodev->func[1]);
-
- /* ...and initialize clock/power states */
- bus->clkstate = CLK_SDONLY;
- bus->idletime = BRCMF_IDLE_INTERVAL;
- bus->idleclock = BRCMF_IDLE_ACTIVE;
-
- /* SR state */
- bus->sleeping = false;
- bus->sr_enabled = false;
-
- brcmf_sdio_debugfs_create(bus);
- brcmf_dbg(INFO, "completed!!\n");
-
- ret = brcmf_sdio_get_fwnames(bus->ci, sdiodev);
- if (ret)
- goto fail;
-
- ret = brcmf_fw_get_firmwares(sdiodev->dev, BRCMF_FW_REQUEST_NVRAM,
- sdiodev->fw_name, sdiodev->nvram_name,
- brcmf_sdio_firmware_callback);
- if (ret != 0) {
- brcmf_err("async firmware request failed: %d\n", ret);
- goto fail;
- }
-
- return bus;
-
-fail:
- brcmf_sdio_remove(bus);
- return NULL;
-}
-
-/* Detach and free everything */
-void brcmf_sdio_remove(struct brcmf_sdio *bus)
-{
- brcmf_dbg(TRACE, "Enter\n");
-
- if (bus) {
- /* De-register interrupt handler */
- brcmf_sdiod_intr_unregister(bus->sdiodev);
-
- brcmf_detach(bus->sdiodev->dev);
-
- cancel_work_sync(&bus->datawork);
- if (bus->brcmf_wq)
- destroy_workqueue(bus->brcmf_wq);
-
- if (bus->ci) {
- if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
- sdio_claim_host(bus->sdiodev->func[1]);
- brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
- /* Leave the device in state where it is
- * 'quiet'. This is done by putting it in
- * download_state which essentially resets
- * all necessary cores.
- */
- msleep(20);
- brcmf_chip_enter_download(bus->ci);
- brcmf_sdio_clkctl(bus, CLK_NONE, false);
- sdio_release_host(bus->sdiodev->func[1]);
- }
- brcmf_chip_detach(bus->ci);
- }
-
- kfree(bus->rxbuf);
- kfree(bus->hdrbuf);
- kfree(bus);
- }
-
- brcmf_dbg(TRACE, "Disconnected\n");
-}
-
-void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick)
-{
- /* Totally stop the timer */
- if (!wdtick && bus->wd_timer_valid) {
- del_timer_sync(&bus->timer);
- bus->wd_timer_valid = false;
- bus->save_ms = wdtick;
- return;
- }
-
- /* don't start the wd until fw is loaded */
- if (bus->sdiodev->bus_if->state != BRCMF_BUS_DATA)
- return;
-
- if (wdtick) {
- if (bus->save_ms != BRCMF_WD_POLL_MS) {
- if (bus->wd_timer_valid)
- /* Stop timer and restart at new value */
- del_timer_sync(&bus->timer);
-
- /* Create timer again when watchdog period is
- dynamically changed or in the first instance
- */
- bus->timer.expires =
- jiffies + BRCMF_WD_POLL_MS * HZ / 1000;
- add_timer(&bus->timer);
-
- } else {
- /* Re arm the timer, at last watchdog period */
- mod_timer(&bus->timer,
- jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
- }
-
- bus->wd_timer_valid = true;
- bus->save_ms = wdtick;
- }
-}
#include <defs.h>
#include "debug.h"
-#include "sdio_host.h"
+#include "sdio.h"
void brcmf_of_probe(struct brcmf_sdio_dev *sdiodev)
{
--- /dev/null
+/*
+ * Copyright (c) 2010 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/printk.h>
+#include <linux/pci_ids.h>
+#include <linux/netdevice.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/card.h>
+#include <linux/semaphore.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/bcma/bcma.h>
+#include <linux/debugfs.h>
+#include <linux/vmalloc.h>
+#include <linux/platform_data/brcmfmac-sdio.h>
+#include <linux/moduleparam.h>
+#include <asm/unaligned.h>
+#include <defs.h>
+#include <brcmu_wifi.h>
+#include <brcmu_utils.h>
+#include <brcm_hw_ids.h>
+#include <soc.h>
+#include "sdio.h"
+#include "chip.h"
+#include "firmware.h"
+
+#define DCMD_RESP_TIMEOUT 2000 /* In milli second */
+
+#ifdef DEBUG
+
+#define BRCMF_TRAP_INFO_SIZE 80
+
+#define CBUF_LEN (128)
+
+/* Device console log buffer state */
+#define CONSOLE_BUFFER_MAX 2024
+
+struct rte_log_le {
+ __le32 buf; /* Can't be pointer on (64-bit) hosts */
+ __le32 buf_size;
+ __le32 idx;
+ char *_buf_compat; /* Redundant pointer for backward compat. */
+};
+
+struct rte_console {
+ /* Virtual UART
+ * When there is no UART (e.g. Quickturn),
+ * the host should write a complete
+ * input line directly into cbuf and then write
+ * the length into vcons_in.
+ * This may also be used when there is a real UART
+ * (at risk of conflicting with
+ * the real UART). vcons_out is currently unused.
+ */
+ uint vcons_in;
+ uint vcons_out;
+
+ /* Output (logging) buffer
+ * Console output is written to a ring buffer log_buf at index log_idx.
+ * The host may read the output when it sees log_idx advance.
+ * Output will be lost if the output wraps around faster than the host
+ * polls.
+ */
+ struct rte_log_le log_le;
+
+ /* Console input line buffer
+ * Characters are read one at a time into cbuf
+ * until <CR> is received, then
+ * the buffer is processed as a command line.
+ * Also used for virtual UART.
+ */
+ uint cbuf_idx;
+ char cbuf[CBUF_LEN];
+};
+
+#endif /* DEBUG */
+#include <chipcommon.h>
+
+#include "bus.h"
+#include "debug.h"
+#include "tracepoint.h"
+
+#define TXQLEN 2048 /* bulk tx queue length */
+#define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */
+#define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */
+#define PRIOMASK 7
+
+#define TXRETRIES 2 /* # of retries for tx frames */
+
+#define BRCMF_RXBOUND 50 /* Default for max rx frames in
+ one scheduling */
+
+#define BRCMF_TXBOUND 20 /* Default for max tx frames in
+ one scheduling */
+
+#define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */
+
+#define MEMBLOCK 2048 /* Block size used for downloading
+ of dongle image */
+#define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold
+ biggest possible glom */
+
+#define BRCMF_FIRSTREAD (1 << 6)
+
+
+/* SBSDIO_DEVICE_CTL */
+
+/* 1: device will assert busy signal when receiving CMD53 */
+#define SBSDIO_DEVCTL_SETBUSY 0x01
+/* 1: assertion of sdio interrupt is synchronous to the sdio clock */
+#define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02
+/* 1: mask all interrupts to host except the chipActive (rev 8) */
+#define SBSDIO_DEVCTL_CA_INT_ONLY 0x04
+/* 1: isolate internal sdio signals, put external pads in tri-state; requires
+ * sdio bus power cycle to clear (rev 9) */
+#define SBSDIO_DEVCTL_PADS_ISO 0x08
+/* Force SD->SB reset mapping (rev 11) */
+#define SBSDIO_DEVCTL_SB_RST_CTL 0x30
+/* Determined by CoreControl bit */
+#define SBSDIO_DEVCTL_RST_CORECTL 0x00
+/* Force backplane reset */
+#define SBSDIO_DEVCTL_RST_BPRESET 0x10
+/* Force no backplane reset */
+#define SBSDIO_DEVCTL_RST_NOBPRESET 0x20
+
+/* direct(mapped) cis space */
+
+/* MAPPED common CIS address */
+#define SBSDIO_CIS_BASE_COMMON 0x1000
+/* maximum bytes in one CIS */
+#define SBSDIO_CIS_SIZE_LIMIT 0x200
+/* cis offset addr is < 17 bits */
+#define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF
+
+/* manfid tuple length, include tuple, link bytes */
+#define SBSDIO_CIS_MANFID_TUPLE_LEN 6
+
+#define CORE_BUS_REG(base, field) \
+ (base + offsetof(struct sdpcmd_regs, field))
+
+/* SDIO function 1 register CHIPCLKCSR */
+/* Force ALP request to backplane */
+#define SBSDIO_FORCE_ALP 0x01
+/* Force HT request to backplane */
+#define SBSDIO_FORCE_HT 0x02
+/* Force ILP request to backplane */
+#define SBSDIO_FORCE_ILP 0x04
+/* Make ALP ready (power up xtal) */
+#define SBSDIO_ALP_AVAIL_REQ 0x08
+/* Make HT ready (power up PLL) */
+#define SBSDIO_HT_AVAIL_REQ 0x10
+/* Squelch clock requests from HW */
+#define SBSDIO_FORCE_HW_CLKREQ_OFF 0x20
+/* Status: ALP is ready */
+#define SBSDIO_ALP_AVAIL 0x40
+/* Status: HT is ready */
+#define SBSDIO_HT_AVAIL 0x80
+#define SBSDIO_CSR_MASK 0x1F
+#define SBSDIO_AVBITS (SBSDIO_HT_AVAIL | SBSDIO_ALP_AVAIL)
+#define SBSDIO_ALPAV(regval) ((regval) & SBSDIO_AVBITS)
+#define SBSDIO_HTAV(regval) (((regval) & SBSDIO_AVBITS) == SBSDIO_AVBITS)
+#define SBSDIO_ALPONLY(regval) (SBSDIO_ALPAV(regval) && !SBSDIO_HTAV(regval))
+#define SBSDIO_CLKAV(regval, alponly) \
+ (SBSDIO_ALPAV(regval) && (alponly ? 1 : SBSDIO_HTAV(regval)))
+
+/* intstatus */
+#define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */
+#define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */
+#define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */
+#define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */
+#define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */
+#define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */
+#define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */
+#define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */
+#define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */
+#define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */
+#define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */
+#define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */
+#define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */
+#define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */
+#define I_PC (1 << 10) /* descriptor error */
+#define I_PD (1 << 11) /* data error */
+#define I_DE (1 << 12) /* Descriptor protocol Error */
+#define I_RU (1 << 13) /* Receive descriptor Underflow */
+#define I_RO (1 << 14) /* Receive fifo Overflow */
+#define I_XU (1 << 15) /* Transmit fifo Underflow */
+#define I_RI (1 << 16) /* Receive Interrupt */
+#define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */
+#define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */
+#define I_XI (1 << 24) /* Transmit Interrupt */
+#define I_RF_TERM (1 << 25) /* Read Frame Terminate */
+#define I_WF_TERM (1 << 26) /* Write Frame Terminate */
+#define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */
+#define I_SBINT (1 << 28) /* sbintstatus Interrupt */
+#define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */
+#define I_SRESET (1 << 30) /* CCCR RES interrupt */
+#define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */
+#define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU)
+#define I_DMA (I_RI | I_XI | I_ERRORS)
+
+/* corecontrol */
+#define CC_CISRDY (1 << 0) /* CIS Ready */
+#define CC_BPRESEN (1 << 1) /* CCCR RES signal */
+#define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */
+#define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */
+#define CC_XMTDATAAVAIL_MODE (1 << 4)
+#define CC_XMTDATAAVAIL_CTRL (1 << 5)
+
+/* SDA_FRAMECTRL */
+#define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */
+#define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */
+#define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */
+#define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */
+
+/*
+ * Software allocation of To SB Mailbox resources
+ */
+
+/* tosbmailbox bits corresponding to intstatus bits */
+#define SMB_NAK (1 << 0) /* Frame NAK */
+#define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */
+#define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */
+#define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */
+
+/* tosbmailboxdata */
+#define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */
+
+/*
+ * Software allocation of To Host Mailbox resources
+ */
+
+/* intstatus bits */
+#define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */
+#define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */
+#define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */
+#define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */
+
+/* tohostmailboxdata */
+#define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */
+#define HMB_DATA_DEVREADY 2 /* talk to host after enable */
+#define HMB_DATA_FC 4 /* per prio flowcontrol update flag */
+#define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */
+
+#define HMB_DATA_FCDATA_MASK 0xff000000
+#define HMB_DATA_FCDATA_SHIFT 24
+
+#define HMB_DATA_VERSION_MASK 0x00ff0000
+#define HMB_DATA_VERSION_SHIFT 16
+
+/*
+ * Software-defined protocol header
+ */
+
+/* Current protocol version */
+#define SDPCM_PROT_VERSION 4
+
+/*
+ * Shared structure between dongle and the host.
+ * The structure contains pointers to trap or assert information.
+ */
+#define SDPCM_SHARED_VERSION 0x0003
+#define SDPCM_SHARED_VERSION_MASK 0x00FF
+#define SDPCM_SHARED_ASSERT_BUILT 0x0100
+#define SDPCM_SHARED_ASSERT 0x0200
+#define SDPCM_SHARED_TRAP 0x0400
+
+/* Space for header read, limit for data packets */
+#define MAX_HDR_READ (1 << 6)
+#define MAX_RX_DATASZ 2048
+
+/* Bump up limit on waiting for HT to account for first startup;
+ * if the image is doing a CRC calculation before programming the PMU
+ * for HT availability, it could take a couple hundred ms more, so
+ * max out at a 1 second (1000000us).
+ */
+#undef PMU_MAX_TRANSITION_DLY
+#define PMU_MAX_TRANSITION_DLY 1000000
+
+/* Value for ChipClockCSR during initial setup */
+#define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \
+ SBSDIO_ALP_AVAIL_REQ)
+
+/* Flags for SDH calls */
+#define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED)
+
+#define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change
+ * when idle
+ */
+#define BRCMF_IDLE_INTERVAL 1
+
+#define KSO_WAIT_US 50
+#define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US)
+
+/*
+ * Conversion of 802.1D priority to precedence level
+ */
+static uint prio2prec(u32 prio)
+{
+ return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ?
+ (prio^2) : prio;
+}
+
+#ifdef DEBUG
+/* Device console log buffer state */
+struct brcmf_console {
+ uint count; /* Poll interval msec counter */
+ uint log_addr; /* Log struct address (fixed) */
+ struct rte_log_le log_le; /* Log struct (host copy) */
+ uint bufsize; /* Size of log buffer */
+ u8 *buf; /* Log buffer (host copy) */
+ uint last; /* Last buffer read index */
+};
+
+struct brcmf_trap_info {
+ __le32 type;
+ __le32 epc;
+ __le32 cpsr;
+ __le32 spsr;
+ __le32 r0; /* a1 */
+ __le32 r1; /* a2 */
+ __le32 r2; /* a3 */
+ __le32 r3; /* a4 */
+ __le32 r4; /* v1 */
+ __le32 r5; /* v2 */
+ __le32 r6; /* v3 */
+ __le32 r7; /* v4 */
+ __le32 r8; /* v5 */
+ __le32 r9; /* sb/v6 */
+ __le32 r10; /* sl/v7 */
+ __le32 r11; /* fp/v8 */
+ __le32 r12; /* ip */
+ __le32 r13; /* sp */
+ __le32 r14; /* lr */
+ __le32 pc; /* r15 */
+};
+#endif /* DEBUG */
+
+struct sdpcm_shared {
+ u32 flags;
+ u32 trap_addr;
+ u32 assert_exp_addr;
+ u32 assert_file_addr;
+ u32 assert_line;
+ u32 console_addr; /* Address of struct rte_console */
+ u32 msgtrace_addr;
+ u8 tag[32];
+ u32 brpt_addr;
+};
+
+struct sdpcm_shared_le {
+ __le32 flags;
+ __le32 trap_addr;
+ __le32 assert_exp_addr;
+ __le32 assert_file_addr;
+ __le32 assert_line;
+ __le32 console_addr; /* Address of struct rte_console */
+ __le32 msgtrace_addr;
+ u8 tag[32];
+ __le32 brpt_addr;
+};
+
+/* dongle SDIO bus specific header info */
+struct brcmf_sdio_hdrinfo {
+ u8 seq_num;
+ u8 channel;
+ u16 len;
+ u16 len_left;
+ u16 len_nxtfrm;
+ u8 dat_offset;
+ bool lastfrm;
+ u16 tail_pad;
+};
+
+/*
+ * hold counter variables
+ */
+struct brcmf_sdio_count {
+ uint intrcount; /* Count of device interrupt callbacks */
+ uint lastintrs; /* Count as of last watchdog timer */
+ uint pollcnt; /* Count of active polls */
+ uint regfails; /* Count of R_REG failures */
+ uint tx_sderrs; /* Count of tx attempts with sd errors */
+ uint fcqueued; /* Tx packets that got queued */
+ uint rxrtx; /* Count of rtx requests (NAK to dongle) */
+ uint rx_toolong; /* Receive frames too long to receive */
+ uint rxc_errors; /* SDIO errors when reading control frames */
+ uint rx_hdrfail; /* SDIO errors on header reads */
+ uint rx_badhdr; /* Bad received headers (roosync?) */
+ uint rx_badseq; /* Mismatched rx sequence number */
+ uint fc_rcvd; /* Number of flow-control events received */
+ uint fc_xoff; /* Number which turned on flow-control */
+ uint fc_xon; /* Number which turned off flow-control */
+ uint rxglomfail; /* Failed deglom attempts */
+ uint rxglomframes; /* Number of glom frames (superframes) */
+ uint rxglompkts; /* Number of packets from glom frames */
+ uint f2rxhdrs; /* Number of header reads */
+ uint f2rxdata; /* Number of frame data reads */
+ uint f2txdata; /* Number of f2 frame writes */
+ uint f1regdata; /* Number of f1 register accesses */
+ uint tickcnt; /* Number of watchdog been schedule */
+ ulong tx_ctlerrs; /* Err of sending ctrl frames */
+ ulong tx_ctlpkts; /* Ctrl frames sent to dongle */
+ ulong rx_ctlerrs; /* Err of processing rx ctrl frames */
+ ulong rx_ctlpkts; /* Ctrl frames processed from dongle */
+ ulong rx_readahead_cnt; /* packets where header read-ahead was used */
+};
+
+/* misc chip info needed by some of the routines */
+/* Private data for SDIO bus interaction */
+struct brcmf_sdio {
+ struct brcmf_sdio_dev *sdiodev; /* sdio device handler */
+ struct brcmf_chip *ci; /* Chip info struct */
+
+ u32 ramsize; /* Size of RAM in SOCRAM (bytes) */
+
+ u32 hostintmask; /* Copy of Host Interrupt Mask */
+ atomic_t intstatus; /* Intstatus bits (events) pending */
+ atomic_t fcstate; /* State of dongle flow-control */
+
+ uint blocksize; /* Block size of SDIO transfers */
+ uint roundup; /* Max roundup limit */
+
+ struct pktq txq; /* Queue length used for flow-control */
+ u8 flowcontrol; /* per prio flow control bitmask */
+ u8 tx_seq; /* Transmit sequence number (next) */
+ u8 tx_max; /* Maximum transmit sequence allowed */
+
+ u8 *hdrbuf; /* buffer for handling rx frame */
+ u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */
+ u8 rx_seq; /* Receive sequence number (expected) */
+ struct brcmf_sdio_hdrinfo cur_read;
+ /* info of current read frame */
+ bool rxskip; /* Skip receive (awaiting NAK ACK) */
+ bool rxpending; /* Data frame pending in dongle */
+
+ uint rxbound; /* Rx frames to read before resched */
+ uint txbound; /* Tx frames to send before resched */
+ uint txminmax;
+
+ struct sk_buff *glomd; /* Packet containing glomming descriptor */
+ struct sk_buff_head glom; /* Packet list for glommed superframe */
+ uint glomerr; /* Glom packet read errors */
+
+ u8 *rxbuf; /* Buffer for receiving control packets */
+ uint rxblen; /* Allocated length of rxbuf */
+ u8 *rxctl; /* Aligned pointer into rxbuf */
+ u8 *rxctl_orig; /* pointer for freeing rxctl */
+ uint rxlen; /* Length of valid data in buffer */
+ spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */
+
+ u8 sdpcm_ver; /* Bus protocol reported by dongle */
+
+ bool intr; /* Use interrupts */
+ bool poll; /* Use polling */
+ atomic_t ipend; /* Device interrupt is pending */
+ uint spurious; /* Count of spurious interrupts */
+ uint pollrate; /* Ticks between device polls */
+ uint polltick; /* Tick counter */
+
+#ifdef DEBUG
+ uint console_interval;
+ struct brcmf_console console; /* Console output polling support */
+ uint console_addr; /* Console address from shared struct */
+#endif /* DEBUG */
+
+ uint clkstate; /* State of sd and backplane clock(s) */
+ bool activity; /* Activity flag for clock down */
+ s32 idletime; /* Control for activity timeout */
+ s32 idlecount; /* Activity timeout counter */
+ s32 idleclock; /* How to set bus driver when idle */
+ bool rxflow_mode; /* Rx flow control mode */
+ bool rxflow; /* Is rx flow control on */
+ bool alp_only; /* Don't use HT clock (ALP only) */
+
+ u8 *ctrl_frame_buf;
+ u16 ctrl_frame_len;
+ bool ctrl_frame_stat;
+
+ spinlock_t txq_lock; /* protect bus->txq */
+ struct semaphore tx_seq_lock; /* protect bus->tx_seq */
+ wait_queue_head_t ctrl_wait;
+ wait_queue_head_t dcmd_resp_wait;
+
+ struct timer_list timer;
+ struct completion watchdog_wait;
+ struct task_struct *watchdog_tsk;
+ bool wd_timer_valid;
+ uint save_ms;
+
+ struct workqueue_struct *brcmf_wq;
+ struct work_struct datawork;
+ atomic_t dpc_tskcnt;
+
+ bool txoff; /* Transmit flow-controlled */
+ struct brcmf_sdio_count sdcnt;
+ bool sr_enabled; /* SaveRestore enabled */
+ bool sleeping; /* SDIO bus sleeping */
+
+ u8 tx_hdrlen; /* sdio bus header length for tx packet */
+ bool txglom; /* host tx glomming enable flag */
+ u16 head_align; /* buffer pointer alignment */
+ u16 sgentry_align; /* scatter-gather buffer alignment */
+};
+
+/* clkstate */
+#define CLK_NONE 0
+#define CLK_SDONLY 1
+#define CLK_PENDING 2
+#define CLK_AVAIL 3
+
+#ifdef DEBUG
+static int qcount[NUMPRIO];
+#endif /* DEBUG */
+
+#define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */
+
+#define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL)
+
+/* Retry count for register access failures */
+static const uint retry_limit = 2;
+
+/* Limit on rounding up frames */
+static const uint max_roundup = 512;
+
+#define ALIGNMENT 4
+
+enum brcmf_sdio_frmtype {
+ BRCMF_SDIO_FT_NORMAL,
+ BRCMF_SDIO_FT_SUPER,
+ BRCMF_SDIO_FT_SUB,
+};
+
+#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
+
+/* SDIO Pad drive strength to select value mappings */
+struct sdiod_drive_str {
+ u8 strength; /* Pad Drive Strength in mA */
+ u8 sel; /* Chip-specific select value */
+};
+
+/* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8V) */
+static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = {
+ {32, 0x6},
+ {26, 0x7},
+ {22, 0x4},
+ {16, 0x5},
+ {12, 0x2},
+ {8, 0x3},
+ {4, 0x0},
+ {0, 0x1}
+};
+
+/* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */
+static const struct sdiod_drive_str sdiod_drive_strength_tab5_1v8[] = {
+ {6, 0x7},
+ {5, 0x6},
+ {4, 0x5},
+ {3, 0x4},
+ {2, 0x2},
+ {1, 0x1},
+ {0, 0x0}
+};
+
+/* SDIO Drive Strength to sel value table for PMU Rev 17 (1.8v) */
+static const struct sdiod_drive_str sdiod_drvstr_tab6_1v8[] = {
+ {3, 0x3},
+ {2, 0x2},
+ {1, 0x1},
+ {0, 0x0} };
+
+/* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */
+static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = {
+ {16, 0x7},
+ {12, 0x5},
+ {8, 0x3},
+ {4, 0x1}
+};
+
+#define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin"
+#define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt"
+#define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin"
+#define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt"
+#define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin"
+#define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt"
+#define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin"
+#define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt"
+#define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin"
+#define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt"
+#define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin"
+#define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt"
+#define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin"
+#define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt"
+#define BCM43362_FIRMWARE_NAME "brcm/brcmfmac43362-sdio.bin"
+#define BCM43362_NVRAM_NAME "brcm/brcmfmac43362-sdio.txt"
+#define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin"
+#define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt"
+#define BCM4354_FIRMWARE_NAME "brcm/brcmfmac4354-sdio.bin"
+#define BCM4354_NVRAM_NAME "brcm/brcmfmac4354-sdio.txt"
+
+MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM43143_NVRAM_NAME);
+MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME);
+MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4329_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4330_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4334_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4335_NVRAM_NAME);
+MODULE_FIRMWARE(BCM43362_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM43362_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4339_NVRAM_NAME);
+MODULE_FIRMWARE(BCM4354_FIRMWARE_NAME);
+MODULE_FIRMWARE(BCM4354_NVRAM_NAME);
+
+struct brcmf_firmware_names {
+ u32 chipid;
+ u32 revmsk;
+ const char *bin;
+ const char *nv;
+};
+
+enum brcmf_firmware_type {
+ BRCMF_FIRMWARE_BIN,
+ BRCMF_FIRMWARE_NVRAM
+};
+
+#define BRCMF_FIRMWARE_NVRAM(name) \
+ name ## _FIRMWARE_NAME, name ## _NVRAM_NAME
+
+static const struct brcmf_firmware_names brcmf_fwname_data[] = {
+ { BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) },
+ { BRCM_CC_43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) },
+ { BRCM_CC_43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) },
+ { BRCM_CC_4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) },
+ { BRCM_CC_4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) },
+ { BRCM_CC_4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) },
+ { BRCM_CC_4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) },
+ { BRCM_CC_43362_CHIP_ID, 0xFFFFFFFE, BRCMF_FIRMWARE_NVRAM(BCM43362) },
+ { BRCM_CC_4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) },
+ { BRCM_CC_4354_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4354) }
+};
+
+static int brcmf_sdio_get_fwnames(struct brcmf_chip *ci,
+ struct brcmf_sdio_dev *sdiodev)
+{
+ int i;
+ uint fw_len, nv_len;
+ char end;
+
+ for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) {
+ if (brcmf_fwname_data[i].chipid == ci->chip &&
+ brcmf_fwname_data[i].revmsk & BIT(ci->chiprev))
+ break;
+ }
+
+ if (i == ARRAY_SIZE(brcmf_fwname_data)) {
+ brcmf_err("Unknown chipid %d [%d]\n", ci->chip, ci->chiprev);
+ return -ENODEV;
+ }
+
+ fw_len = sizeof(sdiodev->fw_name) - 1;
+ nv_len = sizeof(sdiodev->nvram_name) - 1;
+ /* check if firmware path is provided by module parameter */
+ if (brcmf_firmware_path[0] != '\0') {
+ strncpy(sdiodev->fw_name, brcmf_firmware_path, fw_len);
+ strncpy(sdiodev->nvram_name, brcmf_firmware_path, nv_len);
+ fw_len -= strlen(sdiodev->fw_name);
+ nv_len -= strlen(sdiodev->nvram_name);
+
+ end = brcmf_firmware_path[strlen(brcmf_firmware_path) - 1];
+ if (end != '/') {
+ strncat(sdiodev->fw_name, "/", fw_len);
+ strncat(sdiodev->nvram_name, "/", nv_len);
+ fw_len--;
+ nv_len--;
+ }
+ }
+ strncat(sdiodev->fw_name, brcmf_fwname_data[i].bin, fw_len);
+ strncat(sdiodev->nvram_name, brcmf_fwname_data[i].nv, nv_len);
+
+ return 0;
+}
+
+static void pkt_align(struct sk_buff *p, int len, int align)
+{
+ uint datalign;
+ datalign = (unsigned long)(p->data);
+ datalign = roundup(datalign, (align)) - datalign;
+ if (datalign)
+ skb_pull(p, datalign);
+ __skb_trim(p, len);
+}
+
+/* To check if there's window offered */
+static bool data_ok(struct brcmf_sdio *bus)
+{
+ return (u8)(bus->tx_max - bus->tx_seq) != 0 &&
+ ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0;
+}
+
+/*
+ * Reads a register in the SDIO hardware block. This block occupies a series of
+ * adresses on the 32 bit backplane bus.
+ */
+static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset)
+{
+ struct brcmf_core *core;
+ int ret;
+
+ core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
+ *regvar = brcmf_sdiod_regrl(bus->sdiodev, core->base + offset, &ret);
+
+ return ret;
+}
+
+static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset)
+{
+ struct brcmf_core *core;
+ int ret;
+
+ core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
+ brcmf_sdiod_regwl(bus->sdiodev, core->base + reg_offset, regval, &ret);
+
+ return ret;
+}
+
+static int
+brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on)
+{
+ u8 wr_val = 0, rd_val, cmp_val, bmask;
+ int err = 0;
+ int try_cnt = 0;
+
+ brcmf_dbg(TRACE, "Enter: on=%d\n", on);
+
+ wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
+ /* 1st KSO write goes to AOS wake up core if device is asleep */
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
+ wr_val, &err);
+
+ if (on) {
+ /* device WAKEUP through KSO:
+ * write bit 0 & read back until
+ * both bits 0 (kso bit) & 1 (dev on status) are set
+ */
+ cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK |
+ SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK;
+ bmask = cmp_val;
+ usleep_range(2000, 3000);
+ } else {
+ /* Put device to sleep, turn off KSO */
+ cmp_val = 0;
+ /* only check for bit0, bit1(dev on status) may not
+ * get cleared right away
+ */
+ bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK;
+ }
+
+ do {
+ /* reliable KSO bit set/clr:
+ * the sdiod sleep write access is synced to PMU 32khz clk
+ * just one write attempt may fail,
+ * read it back until it matches written value
+ */
+ rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
+ &err);
+ if (((rd_val & bmask) == cmp_val) && !err)
+ break;
+
+ udelay(KSO_WAIT_US);
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
+ wr_val, &err);
+ } while (try_cnt++ < MAX_KSO_ATTEMPTS);
+
+ if (try_cnt > 2)
+ brcmf_dbg(SDIO, "try_cnt=%d rd_val=0x%x err=%d\n", try_cnt,
+ rd_val, err);
+
+ if (try_cnt > MAX_KSO_ATTEMPTS)
+ brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err);
+
+ return err;
+}
+
+#define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE)
+
+/* Turn backplane clock on or off */
+static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok)
+{
+ int err;
+ u8 clkctl, clkreq, devctl;
+ unsigned long timeout;
+
+ brcmf_dbg(SDIO, "Enter\n");
+
+ clkctl = 0;
+
+ if (bus->sr_enabled) {
+ bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY);
+ return 0;
+ }
+
+ if (on) {
+ /* Request HT Avail */
+ clkreq =
+ bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ;
+
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ clkreq, &err);
+ if (err) {
+ brcmf_err("HT Avail request error: %d\n", err);
+ return -EBADE;
+ }
+
+ /* Check current status */
+ clkctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR, &err);
+ if (err) {
+ brcmf_err("HT Avail read error: %d\n", err);
+ return -EBADE;
+ }
+
+ /* Go to pending and await interrupt if appropriate */
+ if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) {
+ /* Allow only clock-available interrupt */
+ devctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_DEVICE_CTL, &err);
+ if (err) {
+ brcmf_err("Devctl error setting CA: %d\n",
+ err);
+ return -EBADE;
+ }
+
+ devctl |= SBSDIO_DEVCTL_CA_INT_ONLY;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
+ devctl, &err);
+ brcmf_dbg(SDIO, "CLKCTL: set PENDING\n");
+ bus->clkstate = CLK_PENDING;
+
+ return 0;
+ } else if (bus->clkstate == CLK_PENDING) {
+ /* Cancel CA-only interrupt filter */
+ devctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_DEVICE_CTL, &err);
+ devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
+ devctl, &err);
+ }
+
+ /* Otherwise, wait here (polling) for HT Avail */
+ timeout = jiffies +
+ msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000);
+ while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
+ clkctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR,
+ &err);
+ if (time_after(jiffies, timeout))
+ break;
+ else
+ usleep_range(5000, 10000);
+ }
+ if (err) {
+ brcmf_err("HT Avail request error: %d\n", err);
+ return -EBADE;
+ }
+ if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
+ brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n",
+ PMU_MAX_TRANSITION_DLY, clkctl);
+ return -EBADE;
+ }
+
+ /* Mark clock available */
+ bus->clkstate = CLK_AVAIL;
+ brcmf_dbg(SDIO, "CLKCTL: turned ON\n");
+
+#if defined(DEBUG)
+ if (!bus->alp_only) {
+ if (SBSDIO_ALPONLY(clkctl))
+ brcmf_err("HT Clock should be on\n");
+ }
+#endif /* defined (DEBUG) */
+
+ } else {
+ clkreq = 0;
+
+ if (bus->clkstate == CLK_PENDING) {
+ /* Cancel CA-only interrupt filter */
+ devctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_DEVICE_CTL, &err);
+ devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
+ devctl, &err);
+ }
+
+ bus->clkstate = CLK_SDONLY;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ clkreq, &err);
+ brcmf_dbg(SDIO, "CLKCTL: turned OFF\n");
+ if (err) {
+ brcmf_err("Failed access turning clock off: %d\n",
+ err);
+ return -EBADE;
+ }
+ }
+ return 0;
+}
+
+/* Change idle/active SD state */
+static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on)
+{
+ brcmf_dbg(SDIO, "Enter\n");
+
+ if (on)
+ bus->clkstate = CLK_SDONLY;
+ else
+ bus->clkstate = CLK_NONE;
+
+ return 0;
+}
+
+/* Transition SD and backplane clock readiness */
+static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok)
+{
+#ifdef DEBUG
+ uint oldstate = bus->clkstate;
+#endif /* DEBUG */
+
+ brcmf_dbg(SDIO, "Enter\n");
+
+ /* Early exit if we're already there */
+ if (bus->clkstate == target) {
+ if (target == CLK_AVAIL) {
+ brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
+ bus->activity = true;
+ }
+ return 0;
+ }
+
+ switch (target) {
+ case CLK_AVAIL:
+ /* Make sure SD clock is available */
+ if (bus->clkstate == CLK_NONE)
+ brcmf_sdio_sdclk(bus, true);
+ /* Now request HT Avail on the backplane */
+ brcmf_sdio_htclk(bus, true, pendok);
+ brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
+ bus->activity = true;
+ break;
+
+ case CLK_SDONLY:
+ /* Remove HT request, or bring up SD clock */
+ if (bus->clkstate == CLK_NONE)
+ brcmf_sdio_sdclk(bus, true);
+ else if (bus->clkstate == CLK_AVAIL)
+ brcmf_sdio_htclk(bus, false, false);
+ else
+ brcmf_err("request for %d -> %d\n",
+ bus->clkstate, target);
+ brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
+ break;
+
+ case CLK_NONE:
+ /* Make sure to remove HT request */
+ if (bus->clkstate == CLK_AVAIL)
+ brcmf_sdio_htclk(bus, false, false);
+ /* Now remove the SD clock */
+ brcmf_sdio_sdclk(bus, false);
+ brcmf_sdio_wd_timer(bus, 0);
+ break;
+ }
+#ifdef DEBUG
+ brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate);
+#endif /* DEBUG */
+
+ return 0;
+}
+
+static int
+brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok)
+{
+ int err = 0;
+ u8 clkcsr;
+
+ brcmf_dbg(SDIO, "Enter: request %s currently %s\n",
+ (sleep ? "SLEEP" : "WAKE"),
+ (bus->sleeping ? "SLEEP" : "WAKE"));
+
+ /* If SR is enabled control bus state with KSO */
+ if (bus->sr_enabled) {
+ /* Done if we're already in the requested state */
+ if (sleep == bus->sleeping)
+ goto end;
+
+ /* Going to sleep */
+ if (sleep) {
+ /* Don't sleep if something is pending */
+ if (atomic_read(&bus->intstatus) ||
+ atomic_read(&bus->ipend) > 0 ||
+ (!atomic_read(&bus->fcstate) &&
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
+ data_ok(bus))) {
+ err = -EBUSY;
+ goto done;
+ }
+
+ clkcsr = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR,
+ &err);
+ if ((clkcsr & SBSDIO_CSR_MASK) == 0) {
+ brcmf_dbg(SDIO, "no clock, set ALP\n");
+ brcmf_sdiod_regwb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR,
+ SBSDIO_ALP_AVAIL_REQ, &err);
+ }
+ err = brcmf_sdio_kso_control(bus, false);
+ /* disable watchdog */
+ if (!err)
+ brcmf_sdio_wd_timer(bus, 0);
+ } else {
+ bus->idlecount = 0;
+ err = brcmf_sdio_kso_control(bus, true);
+ }
+ if (!err) {
+ /* Change state */
+ bus->sleeping = sleep;
+ brcmf_dbg(SDIO, "new state %s\n",
+ (sleep ? "SLEEP" : "WAKE"));
+ } else {
+ brcmf_err("error while changing bus sleep state %d\n",
+ err);
+ goto done;
+ }
+ }
+
+end:
+ /* control clocks */
+ if (sleep) {
+ if (!bus->sr_enabled)
+ brcmf_sdio_clkctl(bus, CLK_NONE, pendok);
+ } else {
+ brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok);
+ }
+done:
+ brcmf_dbg(SDIO, "Exit: err=%d\n", err);
+ return err;
+
+}
+
+#ifdef DEBUG
+static inline bool brcmf_sdio_valid_shared_address(u32 addr)
+{
+ return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff));
+}
+
+static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
+ struct sdpcm_shared *sh)
+{
+ u32 addr;
+ int rv;
+ u32 shaddr = 0;
+ struct sdpcm_shared_le sh_le;
+ __le32 addr_le;
+
+ shaddr = bus->ci->rambase + bus->ramsize - 4;
+
+ /*
+ * Read last word in socram to determine
+ * address of sdpcm_shared structure
+ */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_bus_sleep(bus, false, false);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4);
+ sdio_release_host(bus->sdiodev->func[1]);
+ if (rv < 0)
+ return rv;
+
+ addr = le32_to_cpu(addr_le);
+
+ brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr);
+
+ /*
+ * Check if addr is valid.
+ * NVRAM length at the end of memory should have been overwritten.
+ */
+ if (!brcmf_sdio_valid_shared_address(addr)) {
+ brcmf_err("invalid sdpcm_shared address 0x%08X\n",
+ addr);
+ return -EINVAL;
+ }
+
+ /* Read hndrte_shared structure */
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le,
+ sizeof(struct sdpcm_shared_le));
+ if (rv < 0)
+ return rv;
+
+ /* Endianness */
+ sh->flags = le32_to_cpu(sh_le.flags);
+ sh->trap_addr = le32_to_cpu(sh_le.trap_addr);
+ sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr);
+ sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr);
+ sh->assert_line = le32_to_cpu(sh_le.assert_line);
+ sh->console_addr = le32_to_cpu(sh_le.console_addr);
+ sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr);
+
+ if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) {
+ brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n",
+ SDPCM_SHARED_VERSION,
+ sh->flags & SDPCM_SHARED_VERSION_MASK);
+ return -EPROTO;
+ }
+
+ return 0;
+}
+
+static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
+{
+ struct sdpcm_shared sh;
+
+ if (brcmf_sdio_readshared(bus, &sh) == 0)
+ bus->console_addr = sh.console_addr;
+}
+#else
+static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
+{
+}
+#endif /* DEBUG */
+
+static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus)
+{
+ u32 intstatus = 0;
+ u32 hmb_data;
+ u8 fcbits;
+ int ret;
+
+ brcmf_dbg(SDIO, "Enter\n");
+
+ /* Read mailbox data and ack that we did so */
+ ret = r_sdreg32(bus, &hmb_data,
+ offsetof(struct sdpcmd_regs, tohostmailboxdata));
+
+ if (ret == 0)
+ w_sdreg32(bus, SMB_INT_ACK,
+ offsetof(struct sdpcmd_regs, tosbmailbox));
+ bus->sdcnt.f1regdata += 2;
+
+ /* Dongle recomposed rx frames, accept them again */
+ if (hmb_data & HMB_DATA_NAKHANDLED) {
+ brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n",
+ bus->rx_seq);
+ if (!bus->rxskip)
+ brcmf_err("unexpected NAKHANDLED!\n");
+
+ bus->rxskip = false;
+ intstatus |= I_HMB_FRAME_IND;
+ }
+
+ /*
+ * DEVREADY does not occur with gSPI.
+ */
+ if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) {
+ bus->sdpcm_ver =
+ (hmb_data & HMB_DATA_VERSION_MASK) >>
+ HMB_DATA_VERSION_SHIFT;
+ if (bus->sdpcm_ver != SDPCM_PROT_VERSION)
+ brcmf_err("Version mismatch, dongle reports %d, "
+ "expecting %d\n",
+ bus->sdpcm_ver, SDPCM_PROT_VERSION);
+ else
+ brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n",
+ bus->sdpcm_ver);
+
+ /*
+ * Retrieve console state address now that firmware should have
+ * updated it.
+ */
+ brcmf_sdio_get_console_addr(bus);
+ }
+
+ /*
+ * Flow Control has been moved into the RX headers and this out of band
+ * method isn't used any more.
+ * remaining backward compatible with older dongles.
+ */
+ if (hmb_data & HMB_DATA_FC) {
+ fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >>
+ HMB_DATA_FCDATA_SHIFT;
+
+ if (fcbits & ~bus->flowcontrol)
+ bus->sdcnt.fc_xoff++;
+
+ if (bus->flowcontrol & ~fcbits)
+ bus->sdcnt.fc_xon++;
+
+ bus->sdcnt.fc_rcvd++;
+ bus->flowcontrol = fcbits;
+ }
+
+ /* Shouldn't be any others */
+ if (hmb_data & ~(HMB_DATA_DEVREADY |
+ HMB_DATA_NAKHANDLED |
+ HMB_DATA_FC |
+ HMB_DATA_FWREADY |
+ HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK))
+ brcmf_err("Unknown mailbox data content: 0x%02x\n",
+ hmb_data);
+
+ return intstatus;
+}
+
+static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx)
+{
+ uint retries = 0;
+ u16 lastrbc;
+ u8 hi, lo;
+ int err;
+
+ brcmf_err("%sterminate frame%s\n",
+ abort ? "abort command, " : "",
+ rtx ? ", send NAK" : "");
+
+ if (abort)
+ brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2);
+
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL,
+ SFC_RF_TERM, &err);
+ bus->sdcnt.f1regdata++;
+
+ /* Wait until the packet has been flushed (device/FIFO stable) */
+ for (lastrbc = retries = 0xffff; retries > 0; retries--) {
+ hi = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_RFRAMEBCHI, &err);
+ lo = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_RFRAMEBCLO, &err);
+ bus->sdcnt.f1regdata += 2;
+
+ if ((hi == 0) && (lo == 0))
+ break;
+
+ if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) {
+ brcmf_err("count growing: last 0x%04x now 0x%04x\n",
+ lastrbc, (hi << 8) + lo);
+ }
+ lastrbc = (hi << 8) + lo;
+ }
+
+ if (!retries)
+ brcmf_err("count never zeroed: last 0x%04x\n", lastrbc);
+ else
+ brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries);
+
+ if (rtx) {
+ bus->sdcnt.rxrtx++;
+ err = w_sdreg32(bus, SMB_NAK,
+ offsetof(struct sdpcmd_regs, tosbmailbox));
+
+ bus->sdcnt.f1regdata++;
+ if (err == 0)
+ bus->rxskip = true;
+ }
+
+ /* Clear partial in any case */
+ bus->cur_read.len = 0;
+}
+
+static void brcmf_sdio_txfail(struct brcmf_sdio *bus)
+{
+ struct brcmf_sdio_dev *sdiodev = bus->sdiodev;
+ u8 i, hi, lo;
+
+ /* On failure, abort the command and terminate the frame */
+ brcmf_err("sdio error, abort command and terminate frame\n");
+ bus->sdcnt.tx_sderrs++;
+
+ brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2);
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL);
+ bus->sdcnt.f1regdata++;
+
+ for (i = 0; i < 3; i++) {
+ hi = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCHI, NULL);
+ lo = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCLO, NULL);
+ bus->sdcnt.f1regdata += 2;
+ if ((hi == 0) && (lo == 0))
+ break;
+ }
+}
+
+/* return total length of buffer chain */
+static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus)
+{
+ struct sk_buff *p;
+ uint total;
+
+ total = 0;
+ skb_queue_walk(&bus->glom, p)
+ total += p->len;
+ return total;
+}
+
+static void brcmf_sdio_free_glom(struct brcmf_sdio *bus)
+{
+ struct sk_buff *cur, *next;
+
+ skb_queue_walk_safe(&bus->glom, cur, next) {
+ skb_unlink(cur, &bus->glom);
+ brcmu_pkt_buf_free_skb(cur);
+ }
+}
+
+/**
+ * brcmfmac sdio bus specific header
+ * This is the lowest layer header wrapped on the packets transmitted between
+ * host and WiFi dongle which contains information needed for SDIO core and
+ * firmware
+ *
+ * It consists of 3 parts: hardware header, hardware extension header and
+ * software header
+ * hardware header (frame tag) - 4 bytes
+ * Byte 0~1: Frame length
+ * Byte 2~3: Checksum, bit-wise inverse of frame length
+ * hardware extension header - 8 bytes
+ * Tx glom mode only, N/A for Rx or normal Tx
+ * Byte 0~1: Packet length excluding hw frame tag
+ * Byte 2: Reserved
+ * Byte 3: Frame flags, bit 0: last frame indication
+ * Byte 4~5: Reserved
+ * Byte 6~7: Tail padding length
+ * software header - 8 bytes
+ * Byte 0: Rx/Tx sequence number
+ * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag
+ * Byte 2: Length of next data frame, reserved for Tx
+ * Byte 3: Data offset
+ * Byte 4: Flow control bits, reserved for Tx
+ * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet
+ * Byte 6~7: Reserved
+ */
+#define SDPCM_HWHDR_LEN 4
+#define SDPCM_HWEXT_LEN 8
+#define SDPCM_SWHDR_LEN 8
+#define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN)
+/* software header */
+#define SDPCM_SEQ_MASK 0x000000ff
+#define SDPCM_SEQ_WRAP 256
+#define SDPCM_CHANNEL_MASK 0x00000f00
+#define SDPCM_CHANNEL_SHIFT 8
+#define SDPCM_CONTROL_CHANNEL 0 /* Control */
+#define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */
+#define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */
+#define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */
+#define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */
+#define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80)
+#define SDPCM_NEXTLEN_MASK 0x00ff0000
+#define SDPCM_NEXTLEN_SHIFT 16
+#define SDPCM_DOFFSET_MASK 0xff000000
+#define SDPCM_DOFFSET_SHIFT 24
+#define SDPCM_FCMASK_MASK 0x000000ff
+#define SDPCM_WINDOW_MASK 0x0000ff00
+#define SDPCM_WINDOW_SHIFT 8
+
+static inline u8 brcmf_sdio_getdatoffset(u8 *swheader)
+{
+ u32 hdrvalue;
+ hdrvalue = *(u32 *)swheader;
+ return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT);
+}
+
+static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header,
+ struct brcmf_sdio_hdrinfo *rd,
+ enum brcmf_sdio_frmtype type)
+{
+ u16 len, checksum;
+ u8 rx_seq, fc, tx_seq_max;
+ u32 swheader;
+
+ trace_brcmf_sdpcm_hdr(SDPCM_RX, header);
+
+ /* hw header */
+ len = get_unaligned_le16(header);
+ checksum = get_unaligned_le16(header + sizeof(u16));
+ /* All zero means no more to read */
+ if (!(len | checksum)) {
+ bus->rxpending = false;
+ return -ENODATA;
+ }
+ if ((u16)(~(len ^ checksum))) {
+ brcmf_err("HW header checksum error\n");
+ bus->sdcnt.rx_badhdr++;
+ brcmf_sdio_rxfail(bus, false, false);
+ return -EIO;
+ }
+ if (len < SDPCM_HDRLEN) {
+ brcmf_err("HW header length error\n");
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUPER &&
+ (roundup(len, bus->blocksize) != rd->len)) {
+ brcmf_err("HW superframe header length error\n");
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUB && len > rd->len) {
+ brcmf_err("HW subframe header length error\n");
+ return -EPROTO;
+ }
+ rd->len = len;
+
+ /* software header */
+ header += SDPCM_HWHDR_LEN;
+ swheader = le32_to_cpu(*(__le32 *)header);
+ if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) {
+ brcmf_err("Glom descriptor found in superframe head\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ rx_seq = (u8)(swheader & SDPCM_SEQ_MASK);
+ rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT;
+ if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL &&
+ type != BRCMF_SDIO_FT_SUPER) {
+ brcmf_err("HW header length too long\n");
+ bus->sdcnt.rx_toolong++;
+ brcmf_sdio_rxfail(bus, false, false);
+ rd->len = 0;
+ return -EPROTO;
+ }
+ if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) {
+ brcmf_err("Wrong channel for superframe\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL &&
+ rd->channel != SDPCM_EVENT_CHANNEL) {
+ brcmf_err("Wrong channel for subframe\n");
+ rd->len = 0;
+ return -EINVAL;
+ }
+ rd->dat_offset = brcmf_sdio_getdatoffset(header);
+ if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) {
+ brcmf_err("seq %d: bad data offset\n", rx_seq);
+ bus->sdcnt.rx_badhdr++;
+ brcmf_sdio_rxfail(bus, false, false);
+ rd->len = 0;
+ return -ENXIO;
+ }
+ if (rd->seq_num != rx_seq) {
+ brcmf_err("seq %d: sequence number error, expect %d\n",
+ rx_seq, rd->seq_num);
+ bus->sdcnt.rx_badseq++;
+ rd->seq_num = rx_seq;
+ }
+ /* no need to check the reset for subframe */
+ if (type == BRCMF_SDIO_FT_SUB)
+ return 0;
+ rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT;
+ if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) {
+ /* only warm for NON glom packet */
+ if (rd->channel != SDPCM_GLOM_CHANNEL)
+ brcmf_err("seq %d: next length error\n", rx_seq);
+ rd->len_nxtfrm = 0;
+ }
+ swheader = le32_to_cpu(*(__le32 *)(header + 4));
+ fc = swheader & SDPCM_FCMASK_MASK;
+ if (bus->flowcontrol != fc) {
+ if (~bus->flowcontrol & fc)
+ bus->sdcnt.fc_xoff++;
+ if (bus->flowcontrol & ~fc)
+ bus->sdcnt.fc_xon++;
+ bus->sdcnt.fc_rcvd++;
+ bus->flowcontrol = fc;
+ }
+ tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT;
+ if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) {
+ brcmf_err("seq %d: max tx seq number error\n", rx_seq);
+ tx_seq_max = bus->tx_seq + 2;
+ }
+ bus->tx_max = tx_seq_max;
+
+ return 0;
+}
+
+static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length)
+{
+ *(__le16 *)header = cpu_to_le16(frm_length);
+ *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length);
+}
+
+static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header,
+ struct brcmf_sdio_hdrinfo *hd_info)
+{
+ u32 hdrval;
+ u8 hdr_offset;
+
+ brcmf_sdio_update_hwhdr(header, hd_info->len);
+ hdr_offset = SDPCM_HWHDR_LEN;
+
+ if (bus->txglom) {
+ hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24);
+ *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
+ hdrval = (u16)hd_info->tail_pad << 16;
+ *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval);
+ hdr_offset += SDPCM_HWEXT_LEN;
+ }
+
+ hdrval = hd_info->seq_num;
+ hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) &
+ SDPCM_CHANNEL_MASK;
+ hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) &
+ SDPCM_DOFFSET_MASK;
+ *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
+ *(((__le32 *)(header + hdr_offset)) + 1) = 0;
+ trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header);
+}
+
+static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
+{
+ u16 dlen, totlen;
+ u8 *dptr, num = 0;
+ u16 sublen;
+ struct sk_buff *pfirst, *pnext;
+
+ int errcode;
+ u8 doff, sfdoff;
+
+ struct brcmf_sdio_hdrinfo rd_new;
+
+ /* If packets, issue read(s) and send up packet chain */
+ /* Return sequence numbers consumed? */
+
+ brcmf_dbg(SDIO, "start: glomd %p glom %p\n",
+ bus->glomd, skb_peek(&bus->glom));
+
+ /* If there's a descriptor, generate the packet chain */
+ if (bus->glomd) {
+ pfirst = pnext = NULL;
+ dlen = (u16) (bus->glomd->len);
+ dptr = bus->glomd->data;
+ if (!dlen || (dlen & 1)) {
+ brcmf_err("bad glomd len(%d), ignore descriptor\n",
+ dlen);
+ dlen = 0;
+ }
+
+ for (totlen = num = 0; dlen; num++) {
+ /* Get (and move past) next length */
+ sublen = get_unaligned_le16(dptr);
+ dlen -= sizeof(u16);
+ dptr += sizeof(u16);
+ if ((sublen < SDPCM_HDRLEN) ||
+ ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) {
+ brcmf_err("descriptor len %d bad: %d\n",
+ num, sublen);
+ pnext = NULL;
+ break;
+ }
+ if (sublen % bus->sgentry_align) {
+ brcmf_err("sublen %d not multiple of %d\n",
+ sublen, bus->sgentry_align);
+ }
+ totlen += sublen;
+
+ /* For last frame, adjust read len so total
+ is a block multiple */
+ if (!dlen) {
+ sublen +=
+ (roundup(totlen, bus->blocksize) - totlen);
+ totlen = roundup(totlen, bus->blocksize);
+ }
+
+ /* Allocate/chain packet for next subframe */
+ pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align);
+ if (pnext == NULL) {
+ brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n",
+ num, sublen);
+ break;
+ }
+ skb_queue_tail(&bus->glom, pnext);
+
+ /* Adhere to start alignment requirements */
+ pkt_align(pnext, sublen, bus->sgentry_align);
+ }
+
+ /* If all allocations succeeded, save packet chain
+ in bus structure */
+ if (pnext) {
+ brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
+ totlen, num);
+ if (BRCMF_GLOM_ON() && bus->cur_read.len &&
+ totlen != bus->cur_read.len) {
+ brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
+ bus->cur_read.len, totlen, rxseq);
+ }
+ pfirst = pnext = NULL;
+ } else {
+ brcmf_sdio_free_glom(bus);
+ num = 0;
+ }
+
+ /* Done with descriptor packet */
+ brcmu_pkt_buf_free_skb(bus->glomd);
+ bus->glomd = NULL;
+ bus->cur_read.len = 0;
+ }
+
+ /* Ok -- either we just generated a packet chain,
+ or had one from before */
+ if (!skb_queue_empty(&bus->glom)) {
+ if (BRCMF_GLOM_ON()) {
+ brcmf_dbg(GLOM, "try superframe read, packet chain:\n");
+ skb_queue_walk(&bus->glom, pnext) {
+ brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n",
+ pnext, (u8 *) (pnext->data),
+ pnext->len, pnext->len);
+ }
+ }
+
+ pfirst = skb_peek(&bus->glom);
+ dlen = (u16) brcmf_sdio_glom_len(bus);
+
+ /* Do an SDIO read for the superframe. Configurable iovar to
+ * read directly into the chained packet, or allocate a large
+ * packet and and copy into the chain.
+ */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ errcode = brcmf_sdiod_recv_chain(bus->sdiodev,
+ &bus->glom, dlen);
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->sdcnt.f2rxdata++;
+
+ /* On failure, kill the superframe, allow a couple retries */
+ if (errcode < 0) {
+ brcmf_err("glom read of %d bytes failed: %d\n",
+ dlen, errcode);
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (bus->glomerr++ < 3) {
+ brcmf_sdio_rxfail(bus, true, true);
+ } else {
+ bus->glomerr = 0;
+ brcmf_sdio_rxfail(bus, true, false);
+ bus->sdcnt.rxglomfail++;
+ brcmf_sdio_free_glom(bus);
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
+ return 0;
+ }
+
+ brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
+ pfirst->data, min_t(int, pfirst->len, 48),
+ "SUPERFRAME:\n");
+
+ rd_new.seq_num = rxseq;
+ rd_new.len = dlen;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new,
+ BRCMF_SDIO_FT_SUPER);
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->cur_read.len = rd_new.len_nxtfrm << 4;
+
+ /* Remove superframe header, remember offset */
+ skb_pull(pfirst, rd_new.dat_offset);
+ sfdoff = rd_new.dat_offset;
+ num = 0;
+
+ /* Validate all the subframe headers */
+ skb_queue_walk(&bus->glom, pnext) {
+ /* leave when invalid subframe is found */
+ if (errcode)
+ break;
+
+ rd_new.len = pnext->len;
+ rd_new.seq_num = rxseq++;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new,
+ BRCMF_SDIO_FT_SUB);
+ sdio_release_host(bus->sdiodev->func[1]);
+ brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
+ pnext->data, 32, "subframe:\n");
+
+ num++;
+ }
+
+ if (errcode) {
+ /* Terminate frame on error, request
+ a couple retries */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (bus->glomerr++ < 3) {
+ /* Restore superframe header space */
+ skb_push(pfirst, sfdoff);
+ brcmf_sdio_rxfail(bus, true, true);
+ } else {
+ bus->glomerr = 0;
+ brcmf_sdio_rxfail(bus, true, false);
+ bus->sdcnt.rxglomfail++;
+ brcmf_sdio_free_glom(bus);
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->cur_read.len = 0;
+ return 0;
+ }
+
+ /* Basic SD framing looks ok - process each packet (header) */
+
+ skb_queue_walk_safe(&bus->glom, pfirst, pnext) {
+ dptr = (u8 *) (pfirst->data);
+ sublen = get_unaligned_le16(dptr);
+ doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]);
+
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
+ dptr, pfirst->len,
+ "Rx Subframe Data:\n");
+
+ __skb_trim(pfirst, sublen);
+ skb_pull(pfirst, doff);
+
+ if (pfirst->len == 0) {
+ skb_unlink(pfirst, &bus->glom);
+ brcmu_pkt_buf_free_skb(pfirst);
+ continue;
+ }
+
+ brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
+ pfirst->data,
+ min_t(int, pfirst->len, 32),
+ "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n",
+ bus->glom.qlen, pfirst, pfirst->data,
+ pfirst->len, pfirst->next,
+ pfirst->prev);
+ skb_unlink(pfirst, &bus->glom);
+ brcmf_rx_frame(bus->sdiodev->dev, pfirst);
+ bus->sdcnt.rxglompkts++;
+ }
+
+ bus->sdcnt.rxglomframes++;
+ }
+ return num;
+}
+
+static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition,
+ bool *pending)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT);
+
+ /* Wait until control frame is available */
+ add_wait_queue(&bus->dcmd_resp_wait, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ while (!(*condition) && (!signal_pending(current) && timeout))
+ timeout = schedule_timeout(timeout);
+
+ if (signal_pending(current))
+ *pending = true;
+
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&bus->dcmd_resp_wait, &wait);
+
+ return timeout;
+}
+
+static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus)
+{
+ if (waitqueue_active(&bus->dcmd_resp_wait))
+ wake_up_interruptible(&bus->dcmd_resp_wait);
+
+ return 0;
+}
+static void
+brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff)
+{
+ uint rdlen, pad;
+ u8 *buf = NULL, *rbuf;
+ int sdret;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (bus->rxblen)
+ buf = vzalloc(bus->rxblen);
+ if (!buf)
+ goto done;
+
+ rbuf = bus->rxbuf;
+ pad = ((unsigned long)rbuf % bus->head_align);
+ if (pad)
+ rbuf += (bus->head_align - pad);
+
+ /* Copy the already-read portion over */
+ memcpy(buf, hdr, BRCMF_FIRSTREAD);
+ if (len <= BRCMF_FIRSTREAD)
+ goto gotpkt;
+
+ /* Raise rdlen to next SDIO block to avoid tail command */
+ rdlen = len - BRCMF_FIRSTREAD;
+ if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) {
+ pad = bus->blocksize - (rdlen % bus->blocksize);
+ if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
+ ((len + pad) < bus->sdiodev->bus_if->maxctl))
+ rdlen += pad;
+ } else if (rdlen % bus->head_align) {
+ rdlen += bus->head_align - (rdlen % bus->head_align);
+ }
+
+ /* Drop if the read is too big or it exceeds our maximum */
+ if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) {
+ brcmf_err("%d-byte control read exceeds %d-byte buffer\n",
+ rdlen, bus->sdiodev->bus_if->maxctl);
+ brcmf_sdio_rxfail(bus, false, false);
+ goto done;
+ }
+
+ if ((len - doff) > bus->sdiodev->bus_if->maxctl) {
+ brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n",
+ len, len - doff, bus->sdiodev->bus_if->maxctl);
+ bus->sdcnt.rx_toolong++;
+ brcmf_sdio_rxfail(bus, false, false);
+ goto done;
+ }
+
+ /* Read remain of frame body */
+ sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen);
+ bus->sdcnt.f2rxdata++;
+
+ /* Control frame failures need retransmission */
+ if (sdret < 0) {
+ brcmf_err("read %d control bytes failed: %d\n",
+ rdlen, sdret);
+ bus->sdcnt.rxc_errors++;
+ brcmf_sdio_rxfail(bus, true, true);
+ goto done;
+ } else
+ memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen);
+
+gotpkt:
+
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
+ buf, len, "RxCtrl:\n");
+
+ /* Point to valid data and indicate its length */
+ spin_lock_bh(&bus->rxctl_lock);
+ if (bus->rxctl) {
+ brcmf_err("last control frame is being processed.\n");
+ spin_unlock_bh(&bus->rxctl_lock);
+ vfree(buf);
+ goto done;
+ }
+ bus->rxctl = buf + doff;
+ bus->rxctl_orig = buf;
+ bus->rxlen = len - doff;
+ spin_unlock_bh(&bus->rxctl_lock);
+
+done:
+ /* Awake any waiters */
+ brcmf_sdio_dcmd_resp_wake(bus);
+}
+
+/* Pad read to blocksize for efficiency */
+static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen)
+{
+ if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) {
+ *pad = bus->blocksize - (*rdlen % bus->blocksize);
+ if (*pad <= bus->roundup && *pad < bus->blocksize &&
+ *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ)
+ *rdlen += *pad;
+ } else if (*rdlen % bus->head_align) {
+ *rdlen += bus->head_align - (*rdlen % bus->head_align);
+ }
+}
+
+static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
+{
+ struct sk_buff *pkt; /* Packet for event or data frames */
+ u16 pad; /* Number of pad bytes to read */
+ uint rxleft = 0; /* Remaining number of frames allowed */
+ int ret; /* Return code from calls */
+ uint rxcount = 0; /* Total frames read */
+ struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new;
+ u8 head_read = 0;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ /* Not finished unless we encounter no more frames indication */
+ bus->rxpending = true;
+
+ for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
+ !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if);
+ rd->seq_num++, rxleft--) {
+
+ /* Handle glomming separately */
+ if (bus->glomd || !skb_queue_empty(&bus->glom)) {
+ u8 cnt;
+ brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
+ bus->glomd, skb_peek(&bus->glom));
+ cnt = brcmf_sdio_rxglom(bus, rd->seq_num);
+ brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
+ rd->seq_num += cnt - 1;
+ rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
+ continue;
+ }
+
+ rd->len_left = rd->len;
+ /* read header first for unknow frame length */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (!rd->len) {
+ ret = brcmf_sdiod_recv_buf(bus->sdiodev,
+ bus->rxhdr, BRCMF_FIRSTREAD);
+ bus->sdcnt.f2rxhdrs++;
+ if (ret < 0) {
+ brcmf_err("RXHEADER FAILED: %d\n",
+ ret);
+ bus->sdcnt.rx_hdrfail++;
+ brcmf_sdio_rxfail(bus, true, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ continue;
+ }
+
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(),
+ bus->rxhdr, SDPCM_HDRLEN,
+ "RxHdr:\n");
+
+ if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd,
+ BRCMF_SDIO_FT_NORMAL)) {
+ sdio_release_host(bus->sdiodev->func[1]);
+ if (!bus->rxpending)
+ break;
+ else
+ continue;
+ }
+
+ if (rd->channel == SDPCM_CONTROL_CHANNEL) {
+ brcmf_sdio_read_control(bus, bus->rxhdr,
+ rd->len,
+ rd->dat_offset);
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
+ sdio_release_host(bus->sdiodev->func[1]);
+ continue;
+ }
+ rd->len_left = rd->len > BRCMF_FIRSTREAD ?
+ rd->len - BRCMF_FIRSTREAD : 0;
+ head_read = BRCMF_FIRSTREAD;
+ }
+
+ brcmf_sdio_pad(bus, &pad, &rd->len_left);
+
+ pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read +
+ bus->head_align);
+ if (!pkt) {
+ /* Give up on data, request rtx of events */
+ brcmf_err("brcmu_pkt_buf_get_skb failed\n");
+ brcmf_sdio_rxfail(bus, false,
+ RETRYCHAN(rd->channel));
+ sdio_release_host(bus->sdiodev->func[1]);
+ continue;
+ }
+ skb_pull(pkt, head_read);
+ pkt_align(pkt, rd->len_left, bus->head_align);
+
+ ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt);
+ bus->sdcnt.f2rxdata++;
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ if (ret < 0) {
+ brcmf_err("read %d bytes from channel %d failed: %d\n",
+ rd->len, rd->channel, ret);
+ brcmu_pkt_buf_free_skb(pkt);
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_rxfail(bus, true,
+ RETRYCHAN(rd->channel));
+ sdio_release_host(bus->sdiodev->func[1]);
+ continue;
+ }
+
+ if (head_read) {
+ skb_push(pkt, head_read);
+ memcpy(pkt->data, bus->rxhdr, head_read);
+ head_read = 0;
+ } else {
+ memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN);
+ rd_new.seq_num = rd->seq_num;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new,
+ BRCMF_SDIO_FT_NORMAL)) {
+ rd->len = 0;
+ brcmu_pkt_buf_free_skb(pkt);
+ }
+ bus->sdcnt.rx_readahead_cnt++;
+ if (rd->len != roundup(rd_new.len, 16)) {
+ brcmf_err("frame length mismatch:read %d, should be %d\n",
+ rd->len,
+ roundup(rd_new.len, 16) >> 4);
+ rd->len = 0;
+ brcmf_sdio_rxfail(bus, true, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
+ rd->len_nxtfrm = rd_new.len_nxtfrm;
+ rd->channel = rd_new.channel;
+ rd->dat_offset = rd_new.dat_offset;
+
+ brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() &&
+ BRCMF_DATA_ON()) &&
+ BRCMF_HDRS_ON(),
+ bus->rxhdr, SDPCM_HDRLEN,
+ "RxHdr:\n");
+
+ if (rd_new.channel == SDPCM_CONTROL_CHANNEL) {
+ brcmf_err("readahead on control packet %d?\n",
+ rd_new.seq_num);
+ /* Force retry w/normal header read */
+ rd->len = 0;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_rxfail(bus, false, true);
+ sdio_release_host(bus->sdiodev->func[1]);
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ }
+ }
+
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
+ pkt->data, rd->len, "Rx Data:\n");
+
+ /* Save superframe descriptor and allocate packet frame */
+ if (rd->channel == SDPCM_GLOM_CHANNEL) {
+ if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) {
+ brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
+ rd->len);
+ brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
+ pkt->data, rd->len,
+ "Glom Data:\n");
+ __skb_trim(pkt, rd->len);
+ skb_pull(pkt, SDPCM_HDRLEN);
+ bus->glomd = pkt;
+ } else {
+ brcmf_err("%s: glom superframe w/o "
+ "descriptor!\n", __func__);
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_rxfail(bus, false, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+ }
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
+ continue;
+ }
+
+ /* Fill in packet len and prio, deliver upward */
+ __skb_trim(pkt, rd->len);
+ skb_pull(pkt, rd->dat_offset);
+
+ /* prepare the descriptor for the next read */
+ rd->len = rd->len_nxtfrm << 4;
+ rd->len_nxtfrm = 0;
+ /* treat all packet as event if we don't know */
+ rd->channel = SDPCM_EVENT_CHANNEL;
+
+ if (pkt->len == 0) {
+ brcmu_pkt_buf_free_skb(pkt);
+ continue;
+ }
+
+ brcmf_rx_frame(bus->sdiodev->dev, pkt);
+ }
+
+ rxcount = maxframes - rxleft;
+ /* Message if we hit the limit */
+ if (!rxleft)
+ brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes);
+ else
+ brcmf_dbg(DATA, "processed %d frames\n", rxcount);
+ /* Back off rxseq if awaiting rtx, update rx_seq */
+ if (bus->rxskip)
+ rd->seq_num--;
+ bus->rx_seq = rd->seq_num;
+
+ return rxcount;
+}
+
+static void
+brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus)
+{
+ if (waitqueue_active(&bus->ctrl_wait))
+ wake_up_interruptible(&bus->ctrl_wait);
+ return;
+}
+
+static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt)
+{
+ u16 head_pad;
+ u8 *dat_buf;
+
+ dat_buf = (u8 *)(pkt->data);
+
+ /* Check head padding */
+ head_pad = ((unsigned long)dat_buf % bus->head_align);
+ if (head_pad) {
+ if (skb_headroom(pkt) < head_pad) {
+ bus->sdiodev->bus_if->tx_realloc++;
+ head_pad = 0;
+ if (skb_cow(pkt, head_pad))
+ return -ENOMEM;
+ }
+ skb_push(pkt, head_pad);
+ dat_buf = (u8 *)(pkt->data);
+ memset(dat_buf, 0, head_pad + bus->tx_hdrlen);
+ }
+ return head_pad;
+}
+
+/**
+ * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for
+ * bus layer usage.
+ */
+/* flag marking a dummy skb added for DMA alignment requirement */
+#define ALIGN_SKB_FLAG 0x8000
+/* bit mask of data length chopped from the previous packet */
+#define ALIGN_SKB_CHOP_LEN_MASK 0x7fff
+
+static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus,
+ struct sk_buff_head *pktq,
+ struct sk_buff *pkt, u16 total_len)
+{
+ struct brcmf_sdio_dev *sdiodev;
+ struct sk_buff *pkt_pad;
+ u16 tail_pad, tail_chop, chain_pad;
+ unsigned int blksize;
+ bool lastfrm;
+ int ntail, ret;
+
+ sdiodev = bus->sdiodev;
+ blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize;
+ /* sg entry alignment should be a divisor of block size */
+ WARN_ON(blksize % bus->sgentry_align);
+
+ /* Check tail padding */
+ lastfrm = skb_queue_is_last(pktq, pkt);
+ tail_pad = 0;
+ tail_chop = pkt->len % bus->sgentry_align;
+ if (tail_chop)
+ tail_pad = bus->sgentry_align - tail_chop;
+ chain_pad = (total_len + tail_pad) % blksize;
+ if (lastfrm && chain_pad)
+ tail_pad += blksize - chain_pad;
+ if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) {
+ pkt_pad = brcmu_pkt_buf_get_skb(tail_pad + tail_chop +
+ bus->head_align);
+ if (pkt_pad == NULL)
+ return -ENOMEM;
+ ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad);
+ if (unlikely(ret < 0)) {
+ kfree_skb(pkt_pad);
+ return ret;
+ }
+ memcpy(pkt_pad->data,
+ pkt->data + pkt->len - tail_chop,
+ tail_chop);
+ *(u16 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop;
+ skb_trim(pkt, pkt->len - tail_chop);
+ skb_trim(pkt_pad, tail_pad + tail_chop);
+ __skb_queue_after(pktq, pkt, pkt_pad);
+ } else {
+ ntail = pkt->data_len + tail_pad -
+ (pkt->end - pkt->tail);
+ if (skb_cloned(pkt) || ntail > 0)
+ if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC))
+ return -ENOMEM;
+ if (skb_linearize(pkt))
+ return -ENOMEM;
+ __skb_put(pkt, tail_pad);
+ }
+
+ return tail_pad;
+}
+
+/**
+ * brcmf_sdio_txpkt_prep - packet preparation for transmit
+ * @bus: brcmf_sdio structure pointer
+ * @pktq: packet list pointer
+ * @chan: virtual channel to transmit the packet
+ *
+ * Processes to be applied to the packet
+ * - Align data buffer pointer
+ * - Align data buffer length
+ * - Prepare header
+ * Return: negative value if there is error
+ */
+static int
+brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
+ uint chan)
+{
+ u16 head_pad, total_len;
+ struct sk_buff *pkt_next;
+ u8 txseq;
+ int ret;
+ struct brcmf_sdio_hdrinfo hd_info = {0};
+
+ txseq = bus->tx_seq;
+ total_len = 0;
+ skb_queue_walk(pktq, pkt_next) {
+ /* alignment packet inserted in previous
+ * loop cycle can be skipped as it is
+ * already properly aligned and does not
+ * need an sdpcm header.
+ */
+ if (*(u16 *)(pkt_next->cb) & ALIGN_SKB_FLAG)
+ continue;
+
+ /* align packet data pointer */
+ ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next);
+ if (ret < 0)
+ return ret;
+ head_pad = (u16)ret;
+ if (head_pad)
+ memset(pkt_next->data + bus->tx_hdrlen, 0, head_pad);
+
+ total_len += pkt_next->len;
+
+ hd_info.len = pkt_next->len;
+ hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next);
+ if (bus->txglom && pktq->qlen > 1) {
+ ret = brcmf_sdio_txpkt_prep_sg(bus, pktq,
+ pkt_next, total_len);
+ if (ret < 0)
+ return ret;
+ hd_info.tail_pad = (u16)ret;
+ total_len += (u16)ret;
+ }
+
+ hd_info.channel = chan;
+ hd_info.dat_offset = head_pad + bus->tx_hdrlen;
+ hd_info.seq_num = txseq++;
+
+ /* Now fill the header */
+ brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info);
+
+ if (BRCMF_BYTES_ON() &&
+ ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) ||
+ (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL)))
+ brcmf_dbg_hex_dump(true, pkt_next->data, hd_info.len,
+ "Tx Frame:\n");
+ else if (BRCMF_HDRS_ON())
+ brcmf_dbg_hex_dump(true, pkt_next->data,
+ head_pad + bus->tx_hdrlen,
+ "Tx Header:\n");
+ }
+ /* Hardware length tag of the first packet should be total
+ * length of the chain (including padding)
+ */
+ if (bus->txglom)
+ brcmf_sdio_update_hwhdr(pktq->next->data, total_len);
+ return 0;
+}
+
+/**
+ * brcmf_sdio_txpkt_postp - packet post processing for transmit
+ * @bus: brcmf_sdio structure pointer
+ * @pktq: packet list pointer
+ *
+ * Processes to be applied to the packet
+ * - Remove head padding
+ * - Remove tail padding
+ */
+static void
+brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq)
+{
+ u8 *hdr;
+ u32 dat_offset;
+ u16 tail_pad;
+ u16 dummy_flags, chop_len;
+ struct sk_buff *pkt_next, *tmp, *pkt_prev;
+
+ skb_queue_walk_safe(pktq, pkt_next, tmp) {
+ dummy_flags = *(u16 *)(pkt_next->cb);
+ if (dummy_flags & ALIGN_SKB_FLAG) {
+ chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK;
+ if (chop_len) {
+ pkt_prev = pkt_next->prev;
+ skb_put(pkt_prev, chop_len);
+ }
+ __skb_unlink(pkt_next, pktq);
+ brcmu_pkt_buf_free_skb(pkt_next);
+ } else {
+ hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN;
+ dat_offset = le32_to_cpu(*(__le32 *)hdr);
+ dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >>
+ SDPCM_DOFFSET_SHIFT;
+ skb_pull(pkt_next, dat_offset);
+ if (bus->txglom) {
+ tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2));
+ skb_trim(pkt_next, pkt_next->len - tail_pad);
+ }
+ }
+ }
+}
+
+/* Writes a HW/SW header into the packet and sends it. */
+/* Assumes: (a) header space already there, (b) caller holds lock */
+static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
+ uint chan)
+{
+ int ret;
+ struct sk_buff *pkt_next, *tmp;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ ret = brcmf_sdio_txpkt_prep(bus, pktq, chan);
+ if (ret)
+ goto done;
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+ ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq);
+ bus->sdcnt.f2txdata++;
+
+ if (ret < 0)
+ brcmf_sdio_txfail(bus);
+
+ sdio_release_host(bus->sdiodev->func[1]);
+
+done:
+ brcmf_sdio_txpkt_postp(bus, pktq);
+ if (ret == 0)
+ bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP;
+ skb_queue_walk_safe(pktq, pkt_next, tmp) {
+ __skb_unlink(pkt_next, pktq);
+ brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0);
+ }
+ return ret;
+}
+
+static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes)
+{
+ struct sk_buff *pkt;
+ struct sk_buff_head pktq;
+ u32 intstatus = 0;
+ int ret = 0, prec_out, i;
+ uint cnt = 0;
+ u8 tx_prec_map, pkt_num;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ tx_prec_map = ~bus->flowcontrol;
+
+ /* Send frames until the limit or some other event */
+ for (cnt = 0; (cnt < maxframes) && data_ok(bus);) {
+ pkt_num = 1;
+ if (down_interruptible(&bus->tx_seq_lock))
+ return cnt;
+ if (bus->txglom)
+ pkt_num = min_t(u8, bus->tx_max - bus->tx_seq,
+ bus->sdiodev->txglomsz);
+ pkt_num = min_t(u32, pkt_num,
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol));
+ __skb_queue_head_init(&pktq);
+ spin_lock_bh(&bus->txq_lock);
+ for (i = 0; i < pkt_num; i++) {
+ pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map,
+ &prec_out);
+ if (pkt == NULL)
+ break;
+ __skb_queue_tail(&pktq, pkt);
+ }
+ spin_unlock_bh(&bus->txq_lock);
+ if (i == 0) {
+ up(&bus->tx_seq_lock);
+ break;
+ }
+
+ ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL);
+ up(&bus->tx_seq_lock);
+
+ cnt += i;
+
+ /* In poll mode, need to check for other events */
+ if (!bus->intr) {
+ /* Check device status, signal pending interrupt */
+ sdio_claim_host(bus->sdiodev->func[1]);
+ ret = r_sdreg32(bus, &intstatus,
+ offsetof(struct sdpcmd_regs,
+ intstatus));
+ sdio_release_host(bus->sdiodev->func[1]);
+ bus->sdcnt.f2txdata++;
+ if (ret != 0)
+ break;
+ if (intstatus & bus->hostintmask)
+ atomic_set(&bus->ipend, 1);
+ }
+ }
+
+ /* Deflow-control stack if needed */
+ if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) &&
+ bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
+ bus->txoff = false;
+ brcmf_txflowblock(bus->sdiodev->dev, false);
+ }
+
+ return cnt;
+}
+
+static int brcmf_sdio_tx_ctrlframe(struct brcmf_sdio *bus, u8 *frame, u16 len)
+{
+ u8 doff;
+ u16 pad;
+ uint retries = 0;
+ struct brcmf_sdio_hdrinfo hd_info = {0};
+ int ret;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ /* Back the pointer to make room for bus header */
+ frame -= bus->tx_hdrlen;
+ len += bus->tx_hdrlen;
+
+ /* Add alignment padding (optional for ctl frames) */
+ doff = ((unsigned long)frame % bus->head_align);
+ if (doff) {
+ frame -= doff;
+ len += doff;
+ memset(frame + bus->tx_hdrlen, 0, doff);
+ }
+
+ /* Round send length to next SDIO block */
+ pad = 0;
+ if (bus->roundup && bus->blocksize && (len > bus->blocksize)) {
+ pad = bus->blocksize - (len % bus->blocksize);
+ if ((pad > bus->roundup) || (pad >= bus->blocksize))
+ pad = 0;
+ } else if (len % bus->head_align) {
+ pad = bus->head_align - (len % bus->head_align);
+ }
+ len += pad;
+
+ hd_info.len = len - pad;
+ hd_info.channel = SDPCM_CONTROL_CHANNEL;
+ hd_info.dat_offset = doff + bus->tx_hdrlen;
+ hd_info.seq_num = bus->tx_seq;
+ hd_info.lastfrm = true;
+ hd_info.tail_pad = pad;
+ brcmf_sdio_hdpack(bus, frame, &hd_info);
+
+ if (bus->txglom)
+ brcmf_sdio_update_hwhdr(frame, len);
+
+ brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
+ frame, len, "Tx Frame:\n");
+ brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) &&
+ BRCMF_HDRS_ON(),
+ frame, min_t(u16, len, 16), "TxHdr:\n");
+
+ do {
+ ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len);
+
+ if (ret < 0)
+ brcmf_sdio_txfail(bus);
+ else
+ bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP;
+ } while (ret < 0 && retries++ < TXRETRIES);
+
+ return ret;
+}
+
+static void brcmf_sdio_bus_stop(struct device *dev)
+{
+ u32 local_hostintmask;
+ u8 saveclk;
+ int err;
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (bus->watchdog_tsk) {
+ send_sig(SIGTERM, bus->watchdog_tsk, 1);
+ kthread_stop(bus->watchdog_tsk);
+ bus->watchdog_tsk = NULL;
+ }
+
+ if (bus_if->state == BRCMF_BUS_DOWN) {
+ sdio_claim_host(sdiodev->func[1]);
+
+ /* Enable clock for device interrupts */
+ brcmf_sdio_bus_sleep(bus, false, false);
+
+ /* Disable and clear interrupts at the chip level also */
+ w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask));
+ local_hostintmask = bus->hostintmask;
+ bus->hostintmask = 0;
+
+ /* Force backplane clocks to assure F2 interrupt propagates */
+ saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ &err);
+ if (!err)
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ (saveclk | SBSDIO_FORCE_HT), &err);
+ if (err)
+ brcmf_err("Failed to force clock for F2: err %d\n",
+ err);
+
+ /* Turn off the bus (F2), free any pending packets */
+ brcmf_dbg(INTR, "disable SDIO interrupts\n");
+ sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
+
+ /* Clear any pending interrupts now that F2 is disabled */
+ w_sdreg32(bus, local_hostintmask,
+ offsetof(struct sdpcmd_regs, intstatus));
+
+ sdio_release_host(sdiodev->func[1]);
+ }
+ /* Clear the data packet queues */
+ brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
+
+ /* Clear any held glomming stuff */
+ if (bus->glomd)
+ brcmu_pkt_buf_free_skb(bus->glomd);
+ brcmf_sdio_free_glom(bus);
+
+ /* Clear rx control and wake any waiters */
+ spin_lock_bh(&bus->rxctl_lock);
+ bus->rxlen = 0;
+ spin_unlock_bh(&bus->rxctl_lock);
+ brcmf_sdio_dcmd_resp_wake(bus);
+
+ /* Reset some F2 state stuff */
+ bus->rxskip = false;
+ bus->tx_seq = bus->rx_seq = 0;
+}
+
+static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus)
+{
+ unsigned long flags;
+
+ if (bus->sdiodev->oob_irq_requested) {
+ spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags);
+ if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) {
+ enable_irq(bus->sdiodev->pdata->oob_irq_nr);
+ bus->sdiodev->irq_en = true;
+ }
+ spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags);
+ }
+}
+
+static void atomic_orr(int val, atomic_t *v)
+{
+ int old_val;
+
+ old_val = atomic_read(v);
+ while (atomic_cmpxchg(v, old_val, val | old_val) != old_val)
+ old_val = atomic_read(v);
+}
+
+static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus)
+{
+ struct brcmf_core *buscore;
+ u32 addr;
+ unsigned long val;
+ int ret;
+
+ buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
+ addr = buscore->base + offsetof(struct sdpcmd_regs, intstatus);
+
+ val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret);
+ bus->sdcnt.f1regdata++;
+ if (ret != 0)
+ return ret;
+
+ val &= bus->hostintmask;
+ atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE));
+
+ /* Clear interrupts */
+ if (val) {
+ brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret);
+ bus->sdcnt.f1regdata++;
+ atomic_orr(val, &bus->intstatus);
+ }
+
+ return ret;
+}
+
+static void brcmf_sdio_dpc(struct brcmf_sdio *bus)
+{
+ u32 newstatus = 0;
+ unsigned long intstatus;
+ uint txlimit = bus->txbound; /* Tx frames to send before resched */
+ uint framecnt; /* Temporary counter of tx/rx frames */
+ int err = 0;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+
+ /* If waiting for HTAVAIL, check status */
+ if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) {
+ u8 clkctl, devctl = 0;
+
+#ifdef DEBUG
+ /* Check for inconsistent device control */
+ devctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_DEVICE_CTL, &err);
+#endif /* DEBUG */
+
+ /* Read CSR, if clock on switch to AVAIL, else ignore */
+ clkctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR, &err);
+
+ brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
+ devctl, clkctl);
+
+ if (SBSDIO_HTAV(clkctl)) {
+ devctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_DEVICE_CTL, &err);
+ devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
+ devctl, &err);
+ bus->clkstate = CLK_AVAIL;
+ }
+ }
+
+ /* Make sure backplane clock is on */
+ brcmf_sdio_bus_sleep(bus, false, true);
+
+ /* Pending interrupt indicates new device status */
+ if (atomic_read(&bus->ipend) > 0) {
+ atomic_set(&bus->ipend, 0);
+ err = brcmf_sdio_intr_rstatus(bus);
+ }
+
+ /* Start with leftover status bits */
+ intstatus = atomic_xchg(&bus->intstatus, 0);
+
+ /* Handle flow-control change: read new state in case our ack
+ * crossed another change interrupt. If change still set, assume
+ * FC ON for safety, let next loop through do the debounce.
+ */
+ if (intstatus & I_HMB_FC_CHANGE) {
+ intstatus &= ~I_HMB_FC_CHANGE;
+ err = w_sdreg32(bus, I_HMB_FC_CHANGE,
+ offsetof(struct sdpcmd_regs, intstatus));
+
+ err = r_sdreg32(bus, &newstatus,
+ offsetof(struct sdpcmd_regs, intstatus));
+ bus->sdcnt.f1regdata += 2;
+ atomic_set(&bus->fcstate,
+ !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)));
+ intstatus |= (newstatus & bus->hostintmask);
+ }
+
+ /* Handle host mailbox indication */
+ if (intstatus & I_HMB_HOST_INT) {
+ intstatus &= ~I_HMB_HOST_INT;
+ intstatus |= brcmf_sdio_hostmail(bus);
+ }
+
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ /* Generally don't ask for these, can get CRC errors... */
+ if (intstatus & I_WR_OOSYNC) {
+ brcmf_err("Dongle reports WR_OOSYNC\n");
+ intstatus &= ~I_WR_OOSYNC;
+ }
+
+ if (intstatus & I_RD_OOSYNC) {
+ brcmf_err("Dongle reports RD_OOSYNC\n");
+ intstatus &= ~I_RD_OOSYNC;
+ }
+
+ if (intstatus & I_SBINT) {
+ brcmf_err("Dongle reports SBINT\n");
+ intstatus &= ~I_SBINT;
+ }
+
+ /* Would be active due to wake-wlan in gSPI */
+ if (intstatus & I_CHIPACTIVE) {
+ brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n");
+ intstatus &= ~I_CHIPACTIVE;
+ }
+
+ /* Ignore frame indications if rxskip is set */
+ if (bus->rxskip)
+ intstatus &= ~I_HMB_FRAME_IND;
+
+ /* On frame indication, read available frames */
+ if ((intstatus & I_HMB_FRAME_IND) && (bus->clkstate == CLK_AVAIL)) {
+ brcmf_sdio_readframes(bus, bus->rxbound);
+ if (!bus->rxpending)
+ intstatus &= ~I_HMB_FRAME_IND;
+ }
+
+ /* Keep still-pending events for next scheduling */
+ if (intstatus)
+ atomic_orr(intstatus, &bus->intstatus);
+
+ brcmf_sdio_clrintr(bus);
+
+ if (bus->ctrl_frame_stat && (bus->clkstate == CLK_AVAIL) &&
+ (down_interruptible(&bus->tx_seq_lock) == 0)) {
+ if (data_ok(bus)) {
+ sdio_claim_host(bus->sdiodev->func[1]);
+ err = brcmf_sdio_tx_ctrlframe(bus, bus->ctrl_frame_buf,
+ bus->ctrl_frame_len);
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ bus->ctrl_frame_stat = false;
+ brcmf_sdio_wait_event_wakeup(bus);
+ }
+ up(&bus->tx_seq_lock);
+ }
+ /* Send queued frames (limit 1 if rx may still be pending) */
+ if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) &&
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit &&
+ data_ok(bus)) {
+ framecnt = bus->rxpending ? min(txlimit, bus->txminmax) :
+ txlimit;
+ brcmf_sdio_sendfromq(bus, framecnt);
+ }
+
+ if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) {
+ brcmf_err("failed backplane access over SDIO, halting operation\n");
+ atomic_set(&bus->intstatus, 0);
+ } else if (atomic_read(&bus->intstatus) ||
+ atomic_read(&bus->ipend) > 0 ||
+ (!atomic_read(&bus->fcstate) &&
+ brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
+ data_ok(bus))) {
+ atomic_inc(&bus->dpc_tskcnt);
+ }
+}
+
+static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+
+ return &bus->txq;
+}
+
+static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt)
+{
+ int ret = -EBADE;
+ uint prec;
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+
+ brcmf_dbg(TRACE, "Enter: pkt: data %p len %d\n", pkt->data, pkt->len);
+
+ /* Add space for the header */
+ skb_push(pkt, bus->tx_hdrlen);
+ /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */
+
+ prec = prio2prec((pkt->priority & PRIOMASK));
+
+ /* Check for existing queue, current flow-control,
+ pending event, or pending clock */
+ brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq));
+ bus->sdcnt.fcqueued++;
+
+ /* Priority based enq */
+ spin_lock_bh(&bus->txq_lock);
+ /* reset bus_flags in packet cb */
+ *(u16 *)(pkt->cb) = 0;
+ if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) {
+ skb_pull(pkt, bus->tx_hdrlen);
+ brcmf_err("out of bus->txq !!!\n");
+ ret = -ENOSR;
+ } else {
+ ret = 0;
+ }
+
+ if (pktq_len(&bus->txq) >= TXHI) {
+ bus->txoff = true;
+ brcmf_txflowblock(bus->sdiodev->dev, true);
+ }
+ spin_unlock_bh(&bus->txq_lock);
+
+#ifdef DEBUG
+ if (pktq_plen(&bus->txq, prec) > qcount[prec])
+ qcount[prec] = pktq_plen(&bus->txq, prec);
+#endif
+
+ if (atomic_read(&bus->dpc_tskcnt) == 0) {
+ atomic_inc(&bus->dpc_tskcnt);
+ queue_work(bus->brcmf_wq, &bus->datawork);
+ }
+
+ return ret;
+}
+
+#ifdef DEBUG
+#define CONSOLE_LINE_MAX 192
+
+static int brcmf_sdio_readconsole(struct brcmf_sdio *bus)
+{
+ struct brcmf_console *c = &bus->console;
+ u8 line[CONSOLE_LINE_MAX], ch;
+ u32 n, idx, addr;
+ int rv;
+
+ /* Don't do anything until FWREADY updates console address */
+ if (bus->console_addr == 0)
+ return 0;
+
+ /* Read console log struct */
+ addr = bus->console_addr + offsetof(struct rte_console, log_le);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le,
+ sizeof(c->log_le));
+ if (rv < 0)
+ return rv;
+
+ /* Allocate console buffer (one time only) */
+ if (c->buf == NULL) {
+ c->bufsize = le32_to_cpu(c->log_le.buf_size);
+ c->buf = kmalloc(c->bufsize, GFP_ATOMIC);
+ if (c->buf == NULL)
+ return -ENOMEM;
+ }
+
+ idx = le32_to_cpu(c->log_le.idx);
+
+ /* Protect against corrupt value */
+ if (idx > c->bufsize)
+ return -EBADE;
+
+ /* Skip reading the console buffer if the index pointer
+ has not moved */
+ if (idx == c->last)
+ return 0;
+
+ /* Read the console buffer */
+ addr = le32_to_cpu(c->log_le.buf);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize);
+ if (rv < 0)
+ return rv;
+
+ while (c->last != idx) {
+ for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) {
+ if (c->last == idx) {
+ /* This would output a partial line.
+ * Instead, back up
+ * the buffer pointer and output this
+ * line next time around.
+ */
+ if (c->last >= n)
+ c->last -= n;
+ else
+ c->last = c->bufsize - n;
+ goto break2;
+ }
+ ch = c->buf[c->last];
+ c->last = (c->last + 1) % c->bufsize;
+ if (ch == '\n')
+ break;
+ line[n] = ch;
+ }
+
+ if (n > 0) {
+ if (line[n - 1] == '\r')
+ n--;
+ line[n] = 0;
+ pr_debug("CONSOLE: %s\n", line);
+ }
+ }
+break2:
+
+ return 0;
+}
+#endif /* DEBUG */
+
+static int
+brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+ int ret = -1;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (down_interruptible(&bus->tx_seq_lock))
+ return -EINTR;
+
+ if (!data_ok(bus)) {
+ brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n",
+ bus->tx_max, bus->tx_seq);
+ up(&bus->tx_seq_lock);
+ /* Send from dpc */
+ bus->ctrl_frame_buf = msg;
+ bus->ctrl_frame_len = msglen;
+ bus->ctrl_frame_stat = true;
+
+ wait_event_interruptible_timeout(bus->ctrl_wait,
+ !bus->ctrl_frame_stat,
+ msecs_to_jiffies(2000));
+
+ if (!bus->ctrl_frame_stat) {
+ brcmf_dbg(SDIO, "ctrl_frame_stat == false\n");
+ ret = 0;
+ } else {
+ brcmf_dbg(SDIO, "ctrl_frame_stat == true\n");
+ bus->ctrl_frame_stat = false;
+ if (down_interruptible(&bus->tx_seq_lock))
+ return -EINTR;
+ ret = -1;
+ }
+ }
+ if (ret == -1) {
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_bus_sleep(bus, false, false);
+ ret = brcmf_sdio_tx_ctrlframe(bus, msg, msglen);
+ sdio_release_host(bus->sdiodev->func[1]);
+ up(&bus->tx_seq_lock);
+ }
+
+ if (ret)
+ bus->sdcnt.tx_ctlerrs++;
+ else
+ bus->sdcnt.tx_ctlpkts++;
+
+ return ret ? -EIO : 0;
+}
+
+#ifdef DEBUG
+static int brcmf_sdio_dump_console(struct seq_file *seq, struct brcmf_sdio *bus,
+ struct sdpcm_shared *sh)
+{
+ u32 addr, console_ptr, console_size, console_index;
+ char *conbuf = NULL;
+ __le32 sh_val;
+ int rv;
+
+ /* obtain console information from device memory */
+ addr = sh->console_addr + offsetof(struct rte_console, log_le);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
+ (u8 *)&sh_val, sizeof(u32));
+ if (rv < 0)
+ return rv;
+ console_ptr = le32_to_cpu(sh_val);
+
+ addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
+ (u8 *)&sh_val, sizeof(u32));
+ if (rv < 0)
+ return rv;
+ console_size = le32_to_cpu(sh_val);
+
+ addr = sh->console_addr + offsetof(struct rte_console, log_le.idx);
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
+ (u8 *)&sh_val, sizeof(u32));
+ if (rv < 0)
+ return rv;
+ console_index = le32_to_cpu(sh_val);
+
+ /* allocate buffer for console data */
+ if (console_size <= CONSOLE_BUFFER_MAX)
+ conbuf = vzalloc(console_size+1);
+
+ if (!conbuf)
+ return -ENOMEM;
+
+ /* obtain the console data from device */
+ conbuf[console_size] = '\0';
+ rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf,
+ console_size);
+ if (rv < 0)
+ goto done;
+
+ rv = seq_write(seq, conbuf + console_index,
+ console_size - console_index);
+ if (rv < 0)
+ goto done;
+
+ if (console_index > 0)
+ rv = seq_write(seq, conbuf, console_index - 1);
+
+done:
+ vfree(conbuf);
+ return rv;
+}
+
+static int brcmf_sdio_trap_info(struct seq_file *seq, struct brcmf_sdio *bus,
+ struct sdpcm_shared *sh)
+{
+ int error;
+ struct brcmf_trap_info tr;
+
+ if ((sh->flags & SDPCM_SHARED_TRAP) == 0) {
+ brcmf_dbg(INFO, "no trap in firmware\n");
+ return 0;
+ }
+
+ error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr,
+ sizeof(struct brcmf_trap_info));
+ if (error < 0)
+ return error;
+
+ seq_printf(seq,
+ "dongle trap info: type 0x%x @ epc 0x%08x\n"
+ " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n"
+ " lr 0x%08x pc 0x%08x offset 0x%x\n"
+ " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n"
+ " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n",
+ le32_to_cpu(tr.type), le32_to_cpu(tr.epc),
+ le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr),
+ le32_to_cpu(tr.r13), le32_to_cpu(tr.r14),
+ le32_to_cpu(tr.pc), sh->trap_addr,
+ le32_to_cpu(tr.r0), le32_to_cpu(tr.r1),
+ le32_to_cpu(tr.r2), le32_to_cpu(tr.r3),
+ le32_to_cpu(tr.r4), le32_to_cpu(tr.r5),
+ le32_to_cpu(tr.r6), le32_to_cpu(tr.r7));
+
+ return 0;
+}
+
+static int brcmf_sdio_assert_info(struct seq_file *seq, struct brcmf_sdio *bus,
+ struct sdpcm_shared *sh)
+{
+ int error = 0;
+ char file[80] = "?";
+ char expr[80] = "<???>";
+
+ if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) {
+ brcmf_dbg(INFO, "firmware not built with -assert\n");
+ return 0;
+ } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) {
+ brcmf_dbg(INFO, "no assert in dongle\n");
+ return 0;
+ }
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+ if (sh->assert_file_addr != 0) {
+ error = brcmf_sdiod_ramrw(bus->sdiodev, false,
+ sh->assert_file_addr, (u8 *)file, 80);
+ if (error < 0)
+ return error;
+ }
+ if (sh->assert_exp_addr != 0) {
+ error = brcmf_sdiod_ramrw(bus->sdiodev, false,
+ sh->assert_exp_addr, (u8 *)expr, 80);
+ if (error < 0)
+ return error;
+ }
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ seq_printf(seq, "dongle assert: %s:%d: assert(%s)\n",
+ file, sh->assert_line, expr);
+ return 0;
+}
+
+static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
+{
+ int error;
+ struct sdpcm_shared sh;
+
+ error = brcmf_sdio_readshared(bus, &sh);
+
+ if (error < 0)
+ return error;
+
+ if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0)
+ brcmf_dbg(INFO, "firmware not built with -assert\n");
+ else if (sh.flags & SDPCM_SHARED_ASSERT)
+ brcmf_err("assertion in dongle\n");
+
+ if (sh.flags & SDPCM_SHARED_TRAP)
+ brcmf_err("firmware trap in dongle\n");
+
+ return 0;
+}
+
+static int brcmf_sdio_died_dump(struct seq_file *seq, struct brcmf_sdio *bus)
+{
+ int error = 0;
+ struct sdpcm_shared sh;
+
+ error = brcmf_sdio_readshared(bus, &sh);
+ if (error < 0)
+ goto done;
+
+ error = brcmf_sdio_assert_info(seq, bus, &sh);
+ if (error < 0)
+ goto done;
+
+ error = brcmf_sdio_trap_info(seq, bus, &sh);
+ if (error < 0)
+ goto done;
+
+ error = brcmf_sdio_dump_console(seq, bus, &sh);
+
+done:
+ return error;
+}
+
+static int brcmf_sdio_forensic_read(struct seq_file *seq, void *data)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
+ struct brcmf_sdio *bus = bus_if->bus_priv.sdio->bus;
+
+ return brcmf_sdio_died_dump(seq, bus);
+}
+
+static int brcmf_debugfs_sdio_count_read(struct seq_file *seq, void *data)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio_count *sdcnt = &sdiodev->bus->sdcnt;
+
+ seq_printf(seq,
+ "intrcount: %u\nlastintrs: %u\n"
+ "pollcnt: %u\nregfails: %u\n"
+ "tx_sderrs: %u\nfcqueued: %u\n"
+ "rxrtx: %u\nrx_toolong: %u\n"
+ "rxc_errors: %u\nrx_hdrfail: %u\n"
+ "rx_badhdr: %u\nrx_badseq: %u\n"
+ "fc_rcvd: %u\nfc_xoff: %u\n"
+ "fc_xon: %u\nrxglomfail: %u\n"
+ "rxglomframes: %u\nrxglompkts: %u\n"
+ "f2rxhdrs: %u\nf2rxdata: %u\n"
+ "f2txdata: %u\nf1regdata: %u\n"
+ "tickcnt: %u\ntx_ctlerrs: %lu\n"
+ "tx_ctlpkts: %lu\nrx_ctlerrs: %lu\n"
+ "rx_ctlpkts: %lu\nrx_readahead: %lu\n",
+ sdcnt->intrcount, sdcnt->lastintrs,
+ sdcnt->pollcnt, sdcnt->regfails,
+ sdcnt->tx_sderrs, sdcnt->fcqueued,
+ sdcnt->rxrtx, sdcnt->rx_toolong,
+ sdcnt->rxc_errors, sdcnt->rx_hdrfail,
+ sdcnt->rx_badhdr, sdcnt->rx_badseq,
+ sdcnt->fc_rcvd, sdcnt->fc_xoff,
+ sdcnt->fc_xon, sdcnt->rxglomfail,
+ sdcnt->rxglomframes, sdcnt->rxglompkts,
+ sdcnt->f2rxhdrs, sdcnt->f2rxdata,
+ sdcnt->f2txdata, sdcnt->f1regdata,
+ sdcnt->tickcnt, sdcnt->tx_ctlerrs,
+ sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
+ sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
+
+ return 0;
+}
+
+static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
+{
+ struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr;
+ struct dentry *dentry = brcmf_debugfs_get_devdir(drvr);
+
+ if (IS_ERR_OR_NULL(dentry))
+ return;
+
+ brcmf_debugfs_add_entry(drvr, "forensics", brcmf_sdio_forensic_read);
+ brcmf_debugfs_add_entry(drvr, "counters",
+ brcmf_debugfs_sdio_count_read);
+ debugfs_create_u32("console_interval", 0644, dentry,
+ &bus->console_interval);
+}
+#else
+static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
+{
+ return 0;
+}
+
+static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
+{
+}
+#endif /* DEBUG */
+
+static int
+brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen)
+{
+ int timeleft;
+ uint rxlen = 0;
+ bool pending;
+ u8 *buf;
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ /* Wait until control frame is available */
+ timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending);
+
+ spin_lock_bh(&bus->rxctl_lock);
+ rxlen = bus->rxlen;
+ memcpy(msg, bus->rxctl, min(msglen, rxlen));
+ bus->rxctl = NULL;
+ buf = bus->rxctl_orig;
+ bus->rxctl_orig = NULL;
+ bus->rxlen = 0;
+ spin_unlock_bh(&bus->rxctl_lock);
+ vfree(buf);
+
+ if (rxlen) {
+ brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n",
+ rxlen, msglen);
+ } else if (timeleft == 0) {
+ brcmf_err("resumed on timeout\n");
+ brcmf_sdio_checkdied(bus);
+ } else if (pending) {
+ brcmf_dbg(CTL, "cancelled\n");
+ return -ERESTARTSYS;
+ } else {
+ brcmf_dbg(CTL, "resumed for unknown reason?\n");
+ brcmf_sdio_checkdied(bus);
+ }
+
+ if (rxlen)
+ bus->sdcnt.rx_ctlpkts++;
+ else
+ bus->sdcnt.rx_ctlerrs++;
+
+ return rxlen ? (int)rxlen : -ETIMEDOUT;
+}
+
+#ifdef DEBUG
+static bool
+brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
+ u8 *ram_data, uint ram_sz)
+{
+ char *ram_cmp;
+ int err;
+ bool ret = true;
+ int address;
+ int offset;
+ int len;
+
+ /* read back and verify */
+ brcmf_dbg(INFO, "Compare RAM dl & ul at 0x%08x; size=%d\n", ram_addr,
+ ram_sz);
+ ram_cmp = kmalloc(MEMBLOCK, GFP_KERNEL);
+ /* do not proceed while no memory but */
+ if (!ram_cmp)
+ return true;
+
+ address = ram_addr;
+ offset = 0;
+ while (offset < ram_sz) {
+ len = ((offset + MEMBLOCK) < ram_sz) ? MEMBLOCK :
+ ram_sz - offset;
+ err = brcmf_sdiod_ramrw(sdiodev, false, address, ram_cmp, len);
+ if (err) {
+ brcmf_err("error %d on reading %d membytes at 0x%08x\n",
+ err, len, address);
+ ret = false;
+ break;
+ } else if (memcmp(ram_cmp, &ram_data[offset], len)) {
+ brcmf_err("Downloaded RAM image is corrupted, block offset is %d, len is %d\n",
+ offset, len);
+ ret = false;
+ break;
+ }
+ offset += len;
+ address += len;
+ }
+
+ kfree(ram_cmp);
+
+ return ret;
+}
+#else /* DEBUG */
+static bool
+brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
+ u8 *ram_data, uint ram_sz)
+{
+ return true;
+}
+#endif /* DEBUG */
+
+static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus,
+ const struct firmware *fw)
+{
+ int err;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ err = brcmf_sdiod_ramrw(bus->sdiodev, true, bus->ci->rambase,
+ (u8 *)fw->data, fw->size);
+ if (err)
+ brcmf_err("error %d on writing %d membytes at 0x%08x\n",
+ err, (int)fw->size, bus->ci->rambase);
+ else if (!brcmf_sdio_verifymemory(bus->sdiodev, bus->ci->rambase,
+ (u8 *)fw->data, fw->size))
+ err = -EIO;
+
+ return err;
+}
+
+static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus,
+ void *vars, u32 varsz)
+{
+ int address;
+ int err;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ address = bus->ci->ramsize - varsz + bus->ci->rambase;
+ err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, vars, varsz);
+ if (err)
+ brcmf_err("error %d on writing %d nvram bytes at 0x%08x\n",
+ err, varsz, address);
+ else if (!brcmf_sdio_verifymemory(bus->sdiodev, address, vars, varsz))
+ err = -EIO;
+
+ return err;
+}
+
+static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus,
+ const struct firmware *fw,
+ void *nvram, u32 nvlen)
+{
+ int bcmerror = -EFAULT;
+ u32 rstvec;
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
+
+ /* Keep arm in reset */
+ brcmf_chip_enter_download(bus->ci);
+
+ rstvec = get_unaligned_le32(fw->data);
+ brcmf_dbg(SDIO, "firmware rstvec: %x\n", rstvec);
+
+ bcmerror = brcmf_sdio_download_code_file(bus, fw);
+ release_firmware(fw);
+ if (bcmerror) {
+ brcmf_err("dongle image file download failed\n");
+ brcmf_fw_nvram_free(nvram);
+ goto err;
+ }
+
+ bcmerror = brcmf_sdio_download_nvram(bus, nvram, nvlen);
+ brcmf_fw_nvram_free(nvram);
+ if (bcmerror) {
+ brcmf_err("dongle nvram file download failed\n");
+ goto err;
+ }
+
+ /* Take arm out of reset */
+ if (!brcmf_chip_exit_download(bus->ci, rstvec)) {
+ brcmf_err("error getting out of ARM core reset\n");
+ goto err;
+ }
+
+ /* Allow HT Clock now that the ARM is running. */
+ brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD);
+ bcmerror = 0;
+
+err:
+ brcmf_sdio_clkctl(bus, CLK_SDONLY, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+ return bcmerror;
+}
+
+static void brcmf_sdio_sr_init(struct brcmf_sdio *bus)
+{
+ int err = 0;
+ u8 val;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err);
+ if (err) {
+ brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n");
+ return;
+ }
+
+ val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT;
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err);
+ if (err) {
+ brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n");
+ return;
+ }
+
+ /* Add CMD14 Support */
+ brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP,
+ (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT |
+ SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT),
+ &err);
+ if (err) {
+ brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n");
+ return;
+ }
+
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ SBSDIO_FORCE_HT, &err);
+ if (err) {
+ brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n");
+ return;
+ }
+
+ /* set flag */
+ bus->sr_enabled = true;
+ brcmf_dbg(INFO, "SR enabled\n");
+}
+
+/* enable KSO bit */
+static int brcmf_sdio_kso_init(struct brcmf_sdio *bus)
+{
+ u8 val;
+ int err = 0;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ /* KSO bit added in SDIO core rev 12 */
+ if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12)
+ return 0;
+
+ val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err);
+ if (err) {
+ brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n");
+ return err;
+ }
+
+ if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) {
+ val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN <<
+ SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
+ val, &err);
+ if (err) {
+ brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+
+static int brcmf_sdio_bus_preinit(struct device *dev)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+ uint pad_size;
+ u32 value;
+ int err;
+
+ /* the commands below use the terms tx and rx from
+ * a device perspective, ie. bus:txglom affects the
+ * bus transfers from device to host.
+ */
+ if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) {
+ /* for sdio core rev < 12, disable txgloming */
+ value = 0;
+ err = brcmf_iovar_data_set(dev, "bus:txglom", &value,
+ sizeof(u32));
+ } else {
+ /* otherwise, set txglomalign */
+ value = 4;
+ if (sdiodev->pdata)
+ value = sdiodev->pdata->sd_sgentry_align;
+ /* SDIO ADMA requires at least 32 bit alignment */
+ value = max_t(u32, value, 4);
+ err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value,
+ sizeof(u32));
+ }
+
+ if (err < 0)
+ goto done;
+
+ bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
+ if (sdiodev->sg_support) {
+ bus->txglom = false;
+ value = 1;
+ pad_size = bus->sdiodev->func[2]->cur_blksize << 1;
+ err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom",
+ &value, sizeof(u32));
+ if (err < 0) {
+ /* bus:rxglom is allowed to fail */
+ err = 0;
+ } else {
+ bus->txglom = true;
+ bus->tx_hdrlen += SDPCM_HWEXT_LEN;
+ }
+ }
+ brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen);
+
+done:
+ return err;
+}
+
+void brcmf_sdio_isr(struct brcmf_sdio *bus)
+{
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (!bus) {
+ brcmf_err("bus is null pointer, exiting\n");
+ return;
+ }
+
+ if (!brcmf_bus_ready(bus->sdiodev->bus_if)) {
+ brcmf_err("bus is down. we have nothing to do\n");
+ return;
+ }
+ /* Count the interrupt call */
+ bus->sdcnt.intrcount++;
+ if (in_interrupt())
+ atomic_set(&bus->ipend, 1);
+ else
+ if (brcmf_sdio_intr_rstatus(bus)) {
+ brcmf_err("failed backplane access\n");
+ }
+
+ /* Disable additional interrupts (is this needed now)? */
+ if (!bus->intr)
+ brcmf_err("isr w/o interrupt configured!\n");
+
+ atomic_inc(&bus->dpc_tskcnt);
+ queue_work(bus->brcmf_wq, &bus->datawork);
+}
+
+static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus)
+{
+#ifdef DEBUG
+ struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev);
+#endif /* DEBUG */
+
+ brcmf_dbg(TIMER, "Enter\n");
+
+ /* Poll period: check device if appropriate. */
+ if (!bus->sr_enabled &&
+ bus->poll && (++bus->polltick >= bus->pollrate)) {
+ u32 intstatus = 0;
+
+ /* Reset poll tick */
+ bus->polltick = 0;
+
+ /* Check device if no interrupts */
+ if (!bus->intr ||
+ (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) {
+
+ if (atomic_read(&bus->dpc_tskcnt) == 0) {
+ u8 devpend;
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+ devpend = brcmf_sdiod_regrb(bus->sdiodev,
+ SDIO_CCCR_INTx,
+ NULL);
+ sdio_release_host(bus->sdiodev->func[1]);
+ intstatus =
+ devpend & (INTR_STATUS_FUNC1 |
+ INTR_STATUS_FUNC2);
+ }
+
+ /* If there is something, make like the ISR and
+ schedule the DPC */
+ if (intstatus) {
+ bus->sdcnt.pollcnt++;
+ atomic_set(&bus->ipend, 1);
+
+ atomic_inc(&bus->dpc_tskcnt);
+ queue_work(bus->brcmf_wq, &bus->datawork);
+ }
+ }
+
+ /* Update interrupt tracking */
+ bus->sdcnt.lastintrs = bus->sdcnt.intrcount;
+ }
+#ifdef DEBUG
+ /* Poll for console output periodically */
+ if (bus_if && bus_if->state == BRCMF_BUS_DATA &&
+ bus->console_interval != 0) {
+ bus->console.count += BRCMF_WD_POLL_MS;
+ if (bus->console.count >= bus->console_interval) {
+ bus->console.count -= bus->console_interval;
+ sdio_claim_host(bus->sdiodev->func[1]);
+ /* Make sure backplane clock is on */
+ brcmf_sdio_bus_sleep(bus, false, false);
+ if (brcmf_sdio_readconsole(bus) < 0)
+ /* stop on error */
+ bus->console_interval = 0;
+ sdio_release_host(bus->sdiodev->func[1]);
+ }
+ }
+#endif /* DEBUG */
+
+ /* On idle timeout clear activity flag and/or turn off clock */
+ if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) {
+ if (++bus->idlecount >= bus->idletime) {
+ bus->idlecount = 0;
+ if (bus->activity) {
+ bus->activity = false;
+ brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
+ } else {
+ brcmf_dbg(SDIO, "idle\n");
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_bus_sleep(bus, true, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+ }
+ }
+ }
+
+ return (atomic_read(&bus->ipend) > 0);
+}
+
+static void brcmf_sdio_dataworker(struct work_struct *work)
+{
+ struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio,
+ datawork);
+
+ while (atomic_read(&bus->dpc_tskcnt)) {
+ atomic_set(&bus->dpc_tskcnt, 0);
+ brcmf_sdio_dpc(bus);
+ }
+}
+
+static void
+brcmf_sdio_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
+ struct brcmf_chip *ci, u32 drivestrength)
+{
+ const struct sdiod_drive_str *str_tab = NULL;
+ u32 str_mask;
+ u32 str_shift;
+ u32 base;
+ u32 i;
+ u32 drivestrength_sel = 0;
+ u32 cc_data_temp;
+ u32 addr;
+
+ if (!(ci->cc_caps & CC_CAP_PMU))
+ return;
+
+ switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) {
+ case SDIOD_DRVSTR_KEY(BRCM_CC_4330_CHIP_ID, 12):
+ str_tab = sdiod_drvstr_tab1_1v8;
+ str_mask = 0x00003800;
+ str_shift = 11;
+ break;
+ case SDIOD_DRVSTR_KEY(BRCM_CC_4334_CHIP_ID, 17):
+ str_tab = sdiod_drvstr_tab6_1v8;
+ str_mask = 0x00001800;
+ str_shift = 11;
+ break;
+ case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17):
+ /* note: 43143 does not support tristate */
+ i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1;
+ if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) {
+ str_tab = sdiod_drvstr_tab2_3v3;
+ str_mask = 0x00000007;
+ str_shift = 0;
+ } else
+ brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n",
+ ci->name, drivestrength);
+ break;
+ case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13):
+ str_tab = sdiod_drive_strength_tab5_1v8;
+ str_mask = 0x00003800;
+ str_shift = 11;
+ break;
+ default:
+ brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
+ ci->name, ci->chiprev, ci->pmurev);
+ break;
+ }
+
+ if (str_tab != NULL) {
+ for (i = 0; str_tab[i].strength != 0; i++) {
+ if (drivestrength >= str_tab[i].strength) {
+ drivestrength_sel = str_tab[i].sel;
+ break;
+ }
+ }
+ base = brcmf_chip_get_chipcommon(ci)->base;
+ addr = CORE_CC_REG(base, chipcontrol_addr);
+ brcmf_sdiod_regwl(sdiodev, addr, 1, NULL);
+ cc_data_temp = brcmf_sdiod_regrl(sdiodev, addr, NULL);
+ cc_data_temp &= ~str_mask;
+ drivestrength_sel <<= str_shift;
+ cc_data_temp |= drivestrength_sel;
+ brcmf_sdiod_regwl(sdiodev, addr, cc_data_temp, NULL);
+
+ brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n",
+ str_tab[i].strength, drivestrength, cc_data_temp);
+ }
+}
+
+static int brcmf_sdio_buscoreprep(void *ctx)
+{
+ struct brcmf_sdio_dev *sdiodev = ctx;
+ int err = 0;
+ u8 clkval, clkset;
+
+ /* Try forcing SDIO core to do ALPAvail request only */
+ clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ;
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
+ if (err) {
+ brcmf_err("error writing for HT off\n");
+ return err;
+ }
+
+ /* If register supported, wait for ALPAvail and then force ALP */
+ /* This may take up to 15 milliseconds */
+ clkval = brcmf_sdiod_regrb(sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR, NULL);
+
+ if ((clkval & ~SBSDIO_AVBITS) != clkset) {
+ brcmf_err("ChipClkCSR access: wrote 0x%02x read 0x%02x\n",
+ clkset, clkval);
+ return -EACCES;
+ }
+
+ SPINWAIT(((clkval = brcmf_sdiod_regrb(sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR, NULL)),
+ !SBSDIO_ALPAV(clkval)),
+ PMU_MAX_TRANSITION_DLY);
+ if (!SBSDIO_ALPAV(clkval)) {
+ brcmf_err("timeout on ALPAV wait, clkval 0x%02x\n",
+ clkval);
+ return -EBUSY;
+ }
+
+ clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP;
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
+ udelay(65);
+
+ /* Also, disable the extra SDIO pull-ups */
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SDIOPULLUP, 0, NULL);
+
+ return 0;
+}
+
+static void brcmf_sdio_buscore_exitdl(void *ctx, struct brcmf_chip *chip,
+ u32 rstvec)
+{
+ struct brcmf_sdio_dev *sdiodev = ctx;
+ struct brcmf_core *core;
+ u32 reg_addr;
+
+ /* clear all interrupts */
+ core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV);
+ reg_addr = core->base + offsetof(struct sdpcmd_regs, intstatus);
+ brcmf_sdiod_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL);
+
+ if (rstvec)
+ /* Write reset vector to address 0 */
+ brcmf_sdiod_ramrw(sdiodev, true, 0, (void *)&rstvec,
+ sizeof(rstvec));
+}
+
+static u32 brcmf_sdio_buscore_read32(void *ctx, u32 addr)
+{
+ struct brcmf_sdio_dev *sdiodev = ctx;
+ u32 val, rev;
+
+ val = brcmf_sdiod_regrl(sdiodev, addr, NULL);
+ if (sdiodev->func[0]->device == BRCM_SDIO_4335_4339_DEVICE_ID &&
+ addr == CORE_CC_REG(SI_ENUM_BASE, chipid)) {
+ rev = (val & CID_REV_MASK) >> CID_REV_SHIFT;
+ if (rev >= 2) {
+ val &= ~CID_ID_MASK;
+ val |= BRCM_CC_4339_CHIP_ID;
+ }
+ }
+ return val;
+}
+
+static void brcmf_sdio_buscore_write32(void *ctx, u32 addr, u32 val)
+{
+ struct brcmf_sdio_dev *sdiodev = ctx;
+
+ brcmf_sdiod_regwl(sdiodev, addr, val, NULL);
+}
+
+static const struct brcmf_buscore_ops brcmf_sdio_buscore_ops = {
+ .prepare = brcmf_sdio_buscoreprep,
+ .exit_dl = brcmf_sdio_buscore_exitdl,
+ .read32 = brcmf_sdio_buscore_read32,
+ .write32 = brcmf_sdio_buscore_write32,
+};
+
+static bool
+brcmf_sdio_probe_attach(struct brcmf_sdio *bus)
+{
+ u8 clkctl = 0;
+ int err = 0;
+ int reg_addr;
+ u32 reg_val;
+ u32 drivestrength;
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+
+ pr_debug("F1 signature read @0x18000000=0x%4x\n",
+ brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL));
+
+ /*
+ * Force PLL off until brcmf_chip_attach()
+ * programs PLL control regs
+ */
+
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ BRCMF_INIT_CLKCTL1, &err);
+ if (!err)
+ clkctl = brcmf_sdiod_regrb(bus->sdiodev,
+ SBSDIO_FUNC1_CHIPCLKCSR, &err);
+
+ if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) {
+ brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n",
+ err, BRCMF_INIT_CLKCTL1, clkctl);
+ goto fail;
+ }
+
+ /* SDIO register access works so moving
+ * state from UNKNOWN to DOWN.
+ */
+ brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN);
+
+ bus->ci = brcmf_chip_attach(bus->sdiodev, &brcmf_sdio_buscore_ops);
+ if (IS_ERR(bus->ci)) {
+ brcmf_err("brcmf_chip_attach failed!\n");
+ bus->ci = NULL;
+ goto fail;
+ }
+
+ if (brcmf_sdio_kso_init(bus)) {
+ brcmf_err("error enabling KSO\n");
+ goto fail;
+ }
+
+ if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength))
+ drivestrength = bus->sdiodev->pdata->drive_strength;
+ else
+ drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH;
+ brcmf_sdio_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength);
+
+ /* Get info on the SOCRAM cores... */
+ bus->ramsize = bus->ci->ramsize;
+ if (!(bus->ramsize)) {
+ brcmf_err("failed to find SOCRAM memory!\n");
+ goto fail;
+ }
+
+ /* Set card control so an SDIO card reset does a WLAN backplane reset */
+ reg_val = brcmf_sdiod_regrb(bus->sdiodev,
+ SDIO_CCCR_BRCM_CARDCTRL, &err);
+ if (err)
+ goto fail;
+
+ reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET;
+
+ brcmf_sdiod_regwb(bus->sdiodev,
+ SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err);
+ if (err)
+ goto fail;
+
+ /* set PMUControl so a backplane reset does PMU state reload */
+ reg_addr = CORE_CC_REG(brcmf_chip_get_chipcommon(bus->ci)->base,
+ pmucontrol);
+ reg_val = brcmf_sdiod_regrl(bus->sdiodev, reg_addr, &err);
+ if (err)
+ goto fail;
+
+ reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT);
+
+ brcmf_sdiod_regwl(bus->sdiodev, reg_addr, reg_val, &err);
+ if (err)
+ goto fail;
+
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
+
+ /* allocate header buffer */
+ bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL);
+ if (!bus->hdrbuf)
+ return false;
+ /* Locate an appropriately-aligned portion of hdrbuf */
+ bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0],
+ bus->head_align);
+
+ /* Set the poll and/or interrupt flags */
+ bus->intr = true;
+ bus->poll = false;
+ if (bus->poll)
+ bus->pollrate = 1;
+
+ return true;
+
+fail:
+ sdio_release_host(bus->sdiodev->func[1]);
+ return false;
+}
+
+static int
+brcmf_sdio_watchdog_thread(void *data)
+{
+ struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
+
+ allow_signal(SIGTERM);
+ /* Run until signal received */
+ while (1) {
+ if (kthread_should_stop())
+ break;
+ if (!wait_for_completion_interruptible(&bus->watchdog_wait)) {
+ brcmf_sdio_bus_watchdog(bus);
+ /* Count the tick for reference */
+ bus->sdcnt.tickcnt++;
+ reinit_completion(&bus->watchdog_wait);
+ } else
+ break;
+ }
+ return 0;
+}
+
+static void
+brcmf_sdio_watchdog(unsigned long data)
+{
+ struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
+
+ if (bus->watchdog_tsk) {
+ complete(&bus->watchdog_wait);
+ /* Reschedule the watchdog */
+ if (bus->wd_timer_valid)
+ mod_timer(&bus->timer,
+ jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
+ }
+}
+
+static struct brcmf_bus_ops brcmf_sdio_bus_ops = {
+ .stop = brcmf_sdio_bus_stop,
+ .preinit = brcmf_sdio_bus_preinit,
+ .txdata = brcmf_sdio_bus_txdata,
+ .txctl = brcmf_sdio_bus_txctl,
+ .rxctl = brcmf_sdio_bus_rxctl,
+ .gettxq = brcmf_sdio_bus_gettxq,
+ .wowl_config = brcmf_sdio_wowl_config
+};
+
+static void brcmf_sdio_firmware_callback(struct device *dev,
+ const struct firmware *code,
+ void *nvram, u32 nvram_len)
+{
+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio *bus = sdiodev->bus;
+ int err = 0;
+ u8 saveclk;
+
+ brcmf_dbg(TRACE, "Enter: dev=%s\n", dev_name(dev));
+
+ /* try to download image and nvram to the dongle */
+ if (bus_if->state == BRCMF_BUS_DOWN) {
+ bus->alp_only = true;
+ err = brcmf_sdio_download_firmware(bus, code, nvram, nvram_len);
+ if (err)
+ goto fail;
+ bus->alp_only = false;
+ }
+
+ if (!bus_if->drvr)
+ return;
+
+ /* Start the watchdog timer */
+ bus->sdcnt.tickcnt = 0;
+ brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
+
+ sdio_claim_host(sdiodev->func[1]);
+
+ /* Make sure backplane clock is on, needed to generate F2 interrupt */
+ brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
+ if (bus->clkstate != CLK_AVAIL)
+ goto release;
+
+ /* Force clocks on backplane to be sure F2 interrupt propagates */
+ saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err);
+ if (!err) {
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ (saveclk | SBSDIO_FORCE_HT), &err);
+ }
+ if (err) {
+ brcmf_err("Failed to force clock for F2: err %d\n", err);
+ goto release;
+ }
+
+ /* Enable function 2 (frame transfers) */
+ w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT,
+ offsetof(struct sdpcmd_regs, tosbmailboxdata));
+ err = sdio_enable_func(sdiodev->func[SDIO_FUNC_2]);
+
+
+ brcmf_dbg(INFO, "enable F2: err=%d\n", err);
+
+ /* If F2 successfully enabled, set core and enable interrupts */
+ if (!err) {
+ /* Set up the interrupt mask and enable interrupts */
+ bus->hostintmask = HOSTINTMASK;
+ w_sdreg32(bus, bus->hostintmask,
+ offsetof(struct sdpcmd_regs, hostintmask));
+
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_WATERMARK, 8, &err);
+ } else {
+ /* Disable F2 again */
+ sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
+ goto release;
+ }
+
+ if (brcmf_chip_sr_capable(bus->ci)) {
+ brcmf_sdio_sr_init(bus);
+ } else {
+ /* Restore previous clock setting */
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ saveclk, &err);
+ }
+
+ if (err == 0) {
+ err = brcmf_sdiod_intr_register(sdiodev);
+ if (err != 0)
+ brcmf_err("intr register failed:%d\n", err);
+ }
+
+ /* If we didn't come up, turn off backplane clock */
+ if (err != 0)
+ brcmf_sdio_clkctl(bus, CLK_NONE, false);
+
+ sdio_release_host(sdiodev->func[1]);
+
+ err = brcmf_bus_start(dev);
+ if (err != 0) {
+ brcmf_err("dongle is not responding\n");
+ goto fail;
+ }
+ return;
+
+release:
+ sdio_release_host(sdiodev->func[1]);
+fail:
+ brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
+ device_release_driver(dev);
+}
+
+struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
+{
+ int ret;
+ struct brcmf_sdio *bus;
+
+ brcmf_dbg(TRACE, "Enter\n");
+
+ /* Allocate private bus interface state */
+ bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC);
+ if (!bus)
+ goto fail;
+
+ bus->sdiodev = sdiodev;
+ sdiodev->bus = bus;
+ skb_queue_head_init(&bus->glom);
+ bus->txbound = BRCMF_TXBOUND;
+ bus->rxbound = BRCMF_RXBOUND;
+ bus->txminmax = BRCMF_TXMINMAX;
+ bus->tx_seq = SDPCM_SEQ_WRAP - 1;
+
+ /* platform specific configuration:
+ * alignments must be at least 4 bytes for ADMA
+ */
+ bus->head_align = ALIGNMENT;
+ bus->sgentry_align = ALIGNMENT;
+ if (sdiodev->pdata) {
+ if (sdiodev->pdata->sd_head_align > ALIGNMENT)
+ bus->head_align = sdiodev->pdata->sd_head_align;
+ if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT)
+ bus->sgentry_align = sdiodev->pdata->sd_sgentry_align;
+ }
+
+ INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
+ bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq");
+ if (bus->brcmf_wq == NULL) {
+ brcmf_err("insufficient memory to create txworkqueue\n");
+ goto fail;
+ }
+
+ /* attempt to attach to the dongle */
+ if (!(brcmf_sdio_probe_attach(bus))) {
+ brcmf_err("brcmf_sdio_probe_attach failed\n");
+ goto fail;
+ }
+
+ spin_lock_init(&bus->rxctl_lock);
+ spin_lock_init(&bus->txq_lock);
+ sema_init(&bus->tx_seq_lock, 1);
+ init_waitqueue_head(&bus->ctrl_wait);
+ init_waitqueue_head(&bus->dcmd_resp_wait);
+
+ /* Set up the watchdog timer */
+ init_timer(&bus->timer);
+ bus->timer.data = (unsigned long)bus;
+ bus->timer.function = brcmf_sdio_watchdog;
+
+ /* Initialize watchdog thread */
+ init_completion(&bus->watchdog_wait);
+ bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread,
+ bus, "brcmf_watchdog");
+ if (IS_ERR(bus->watchdog_tsk)) {
+ pr_warn("brcmf_watchdog thread failed to start\n");
+ bus->watchdog_tsk = NULL;
+ }
+ /* Initialize DPC thread */
+ atomic_set(&bus->dpc_tskcnt, 0);
+
+ /* Assign bus interface call back */
+ bus->sdiodev->bus_if->dev = bus->sdiodev->dev;
+ bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops;
+ bus->sdiodev->bus_if->chip = bus->ci->chip;
+ bus->sdiodev->bus_if->chiprev = bus->ci->chiprev;
+
+ /* default sdio bus header length for tx packet */
+ bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
+
+ /* Attach to the common layer, reserve hdr space */
+ ret = brcmf_attach(bus->sdiodev->dev);
+ if (ret != 0) {
+ brcmf_err("brcmf_attach failed\n");
+ goto fail;
+ }
+
+ /* Query the F2 block size, set roundup accordingly */
+ bus->blocksize = bus->sdiodev->func[2]->cur_blksize;
+ bus->roundup = min(max_roundup, bus->blocksize);
+
+ /* Allocate buffers */
+ if (bus->sdiodev->bus_if->maxctl) {
+ bus->sdiodev->bus_if->maxctl += bus->roundup;
+ bus->rxblen =
+ roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN),
+ ALIGNMENT) + bus->head_align;
+ bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC);
+ if (!(bus->rxbuf)) {
+ brcmf_err("rxbuf allocation failed\n");
+ goto fail;
+ }
+ }
+
+ sdio_claim_host(bus->sdiodev->func[1]);
+
+ /* Disable F2 to clear any intermediate frame state on the dongle */
+ sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
+
+ bus->rxflow = false;
+
+ /* Done with backplane-dependent accesses, can drop clock... */
+ brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
+
+ sdio_release_host(bus->sdiodev->func[1]);
+
+ /* ...and initialize clock/power states */
+ bus->clkstate = CLK_SDONLY;
+ bus->idletime = BRCMF_IDLE_INTERVAL;
+ bus->idleclock = BRCMF_IDLE_ACTIVE;
+
+ /* SR state */
+ bus->sleeping = false;
+ bus->sr_enabled = false;
+
+ brcmf_sdio_debugfs_create(bus);
+ brcmf_dbg(INFO, "completed!!\n");
+
+ ret = brcmf_sdio_get_fwnames(bus->ci, sdiodev);
+ if (ret)
+ goto fail;
+
+ ret = brcmf_fw_get_firmwares(sdiodev->dev, BRCMF_FW_REQUEST_NVRAM,
+ sdiodev->fw_name, sdiodev->nvram_name,
+ brcmf_sdio_firmware_callback);
+ if (ret != 0) {
+ brcmf_err("async firmware request failed: %d\n", ret);
+ goto fail;
+ }
+
+ return bus;
+
+fail:
+ brcmf_sdio_remove(bus);
+ return NULL;
+}
+
+/* Detach and free everything */
+void brcmf_sdio_remove(struct brcmf_sdio *bus)
+{
+ brcmf_dbg(TRACE, "Enter\n");
+
+ if (bus) {
+ /* De-register interrupt handler */
+ brcmf_sdiod_intr_unregister(bus->sdiodev);
+
+ brcmf_detach(bus->sdiodev->dev);
+
+ cancel_work_sync(&bus->datawork);
+ if (bus->brcmf_wq)
+ destroy_workqueue(bus->brcmf_wq);
+
+ if (bus->ci) {
+ if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
+ sdio_claim_host(bus->sdiodev->func[1]);
+ brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
+ /* Leave the device in state where it is
+ * 'quiet'. This is done by putting it in
+ * download_state which essentially resets
+ * all necessary cores.
+ */
+ msleep(20);
+ brcmf_chip_enter_download(bus->ci);
+ brcmf_sdio_clkctl(bus, CLK_NONE, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+ }
+ brcmf_chip_detach(bus->ci);
+ }
+
+ kfree(bus->rxbuf);
+ kfree(bus->hdrbuf);
+ kfree(bus);
+ }
+
+ brcmf_dbg(TRACE, "Disconnected\n");
+}
+
+void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick)
+{
+ /* Totally stop the timer */
+ if (!wdtick && bus->wd_timer_valid) {
+ del_timer_sync(&bus->timer);
+ bus->wd_timer_valid = false;
+ bus->save_ms = wdtick;
+ return;
+ }
+
+ /* don't start the wd until fw is loaded */
+ if (bus->sdiodev->bus_if->state != BRCMF_BUS_DATA)
+ return;
+
+ if (wdtick) {
+ if (bus->save_ms != BRCMF_WD_POLL_MS) {
+ if (bus->wd_timer_valid)
+ /* Stop timer and restart at new value */
+ del_timer_sync(&bus->timer);
+
+ /* Create timer again when watchdog period is
+ dynamically changed or in the first instance
+ */
+ bus->timer.expires =
+ jiffies + BRCMF_WD_POLL_MS * HZ / 1000;
+ add_timer(&bus->timer);
+
+ } else {
+ /* Re arm the timer, at last watchdog period */
+ mod_timer(&bus->timer,
+ jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
+ }
+
+ bus->wd_timer_valid = true;
+ bus->save_ms = wdtick;
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 2010 Broadcom Corporation
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef BRCMFMAC_SDIO_H
+#define BRCMFMAC_SDIO_H
+
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include "firmware.h"
+
+#define SDIO_FUNC_0 0
+#define SDIO_FUNC_1 1
+#define SDIO_FUNC_2 2
+
+#define SDIOD_FBR_SIZE 0x100
+
+/* io_en */
+#define SDIO_FUNC_ENABLE_1 0x02
+#define SDIO_FUNC_ENABLE_2 0x04
+
+/* io_rdys */
+#define SDIO_FUNC_READY_1 0x02
+#define SDIO_FUNC_READY_2 0x04
+
+/* intr_status */
+#define INTR_STATUS_FUNC1 0x2
+#define INTR_STATUS_FUNC2 0x4
+
+/* Maximum number of I/O funcs */
+#define SDIOD_MAX_IOFUNCS 7
+
+/* mask of register map */
+#define REG_F0_REG_MASK 0x7FF
+#define REG_F1_MISC_MASK 0x1FFFF
+
+/* as of sdiod rev 0, supports 3 functions */
+#define SBSDIO_NUM_FUNCTION 3
+
+/* function 0 vendor specific CCCR registers */
+#define SDIO_CCCR_BRCM_CARDCAP 0xf0
+#define SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT 0x02
+#define SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT 0x04
+#define SDIO_CCCR_BRCM_CARDCAP_CMD_NODEC 0x08
+#define SDIO_CCCR_BRCM_CARDCTRL 0xf1
+#define SDIO_CCCR_BRCM_CARDCTRL_WLANRESET 0x02
+#define SDIO_CCCR_BRCM_SEPINT 0xf2
+
+#define SDIO_SEPINT_MASK 0x01
+#define SDIO_SEPINT_OE 0x02
+#define SDIO_SEPINT_ACT_HI 0x04
+
+/* function 1 miscellaneous registers */
+
+/* sprom command and status */
+#define SBSDIO_SPROM_CS 0x10000
+/* sprom info register */
+#define SBSDIO_SPROM_INFO 0x10001
+/* sprom indirect access data byte 0 */
+#define SBSDIO_SPROM_DATA_LOW 0x10002
+/* sprom indirect access data byte 1 */
+#define SBSDIO_SPROM_DATA_HIGH 0x10003
+/* sprom indirect access addr byte 0 */
+#define SBSDIO_SPROM_ADDR_LOW 0x10004
+/* gpio select */
+#define SBSDIO_GPIO_SELECT 0x10005
+/* gpio output */
+#define SBSDIO_GPIO_OUT 0x10006
+/* gpio enable */
+#define SBSDIO_GPIO_EN 0x10007
+/* rev < 7, watermark for sdio device */
+#define SBSDIO_WATERMARK 0x10008
+/* control busy signal generation */
+#define SBSDIO_DEVICE_CTL 0x10009
+
+/* SB Address Window Low (b15) */
+#define SBSDIO_FUNC1_SBADDRLOW 0x1000A
+/* SB Address Window Mid (b23:b16) */
+#define SBSDIO_FUNC1_SBADDRMID 0x1000B
+/* SB Address Window High (b31:b24) */
+#define SBSDIO_FUNC1_SBADDRHIGH 0x1000C
+/* Frame Control (frame term/abort) */
+#define SBSDIO_FUNC1_FRAMECTRL 0x1000D
+/* ChipClockCSR (ALP/HT ctl/status) */
+#define SBSDIO_FUNC1_CHIPCLKCSR 0x1000E
+/* SdioPullUp (on cmd, d0-d2) */
+#define SBSDIO_FUNC1_SDIOPULLUP 0x1000F
+/* Write Frame Byte Count Low */
+#define SBSDIO_FUNC1_WFRAMEBCLO 0x10019
+/* Write Frame Byte Count High */
+#define SBSDIO_FUNC1_WFRAMEBCHI 0x1001A
+/* Read Frame Byte Count Low */
+#define SBSDIO_FUNC1_RFRAMEBCLO 0x1001B
+/* Read Frame Byte Count High */
+#define SBSDIO_FUNC1_RFRAMEBCHI 0x1001C
+/* MesBusyCtl (rev 11) */
+#define SBSDIO_FUNC1_MESBUSYCTRL 0x1001D
+/* Sdio Core Rev 12 */
+#define SBSDIO_FUNC1_WAKEUPCTRL 0x1001E
+#define SBSDIO_FUNC1_WCTRL_ALPWAIT_MASK 0x1
+#define SBSDIO_FUNC1_WCTRL_ALPWAIT_SHIFT 0
+#define SBSDIO_FUNC1_WCTRL_HTWAIT_MASK 0x2
+#define SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT 1
+#define SBSDIO_FUNC1_SLEEPCSR 0x1001F
+#define SBSDIO_FUNC1_SLEEPCSR_KSO_MASK 0x1
+#define SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT 0
+#define SBSDIO_FUNC1_SLEEPCSR_KSO_EN 1
+#define SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK 0x2
+#define SBSDIO_FUNC1_SLEEPCSR_DEVON_SHIFT 1
+
+#define SBSDIO_FUNC1_MISC_REG_START 0x10000 /* f1 misc register start */
+#define SBSDIO_FUNC1_MISC_REG_LIMIT 0x1001F /* f1 misc register end */
+
+/* function 1 OCP space */
+
+/* sb offset addr is <= 15 bits, 32k */
+#define SBSDIO_SB_OFT_ADDR_MASK 0x07FFF
+#define SBSDIO_SB_OFT_ADDR_LIMIT 0x08000
+/* with b15, maps to 32-bit SB access */
+#define SBSDIO_SB_ACCESS_2_4B_FLAG 0x08000
+
+/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */
+
+#define SBSDIO_SBADDRLOW_MASK 0x80 /* Valid bits in SBADDRLOW */
+#define SBSDIO_SBADDRMID_MASK 0xff /* Valid bits in SBADDRMID */
+#define SBSDIO_SBADDRHIGH_MASK 0xffU /* Valid bits in SBADDRHIGH */
+/* Address bits from SBADDR regs */
+#define SBSDIO_SBWINDOW_MASK 0xffff8000
+
+#define SDIOH_READ 0 /* Read request */
+#define SDIOH_WRITE 1 /* Write request */
+
+#define SDIOH_DATA_FIX 0 /* Fixed addressing */
+#define SDIOH_DATA_INC 1 /* Incremental addressing */
+
+/* internal return code */
+#define SUCCESS 0
+#define ERROR 1
+
+/* Packet alignment for most efficient SDIO (can change based on platform) */
+#define BRCMF_SDALIGN (1 << 6)
+
+/* watchdog polling interval in ms */
+#define BRCMF_WD_POLL_MS 10
+
+struct brcmf_sdreg {
+ int func;
+ int offset;
+ int value;
+};
+
+struct brcmf_sdio;
+
+struct brcmf_sdio_dev {
+ struct sdio_func *func[SDIO_MAX_FUNCS];
+ u8 num_funcs; /* Supported funcs on client */
+ u32 sbwad; /* Save backplane window address */
+ struct brcmf_sdio *bus;
+ atomic_t suspend; /* suspend flag */
+ wait_queue_head_t request_word_wait;
+ wait_queue_head_t request_buffer_wait;
+ struct device *dev;
+ struct brcmf_bus *bus_if;
+ struct brcmfmac_sdio_platform_data *pdata;
+ bool oob_irq_requested;
+ bool irq_en; /* irq enable flags */
+ spinlock_t irq_en_lock;
+ bool irq_wake; /* irq wake enable flags */
+ bool sg_support;
+ uint max_request_size;
+ ushort max_segment_count;
+ uint max_segment_size;
+ uint txglomsz;
+ struct sg_table sgtable;
+ char fw_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
+ char nvram_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
+ bool wowl_enabled;
+};
+
+/* sdio core registers */
+struct sdpcmd_regs {
+ u32 corecontrol; /* 0x00, rev8 */
+ u32 corestatus; /* rev8 */
+ u32 PAD[1];
+ u32 biststatus; /* rev8 */
+
+ /* PCMCIA access */
+ u16 pcmciamesportaladdr; /* 0x010, rev8 */
+ u16 PAD[1];
+ u16 pcmciamesportalmask; /* rev8 */
+ u16 PAD[1];
+ u16 pcmciawrframebc; /* rev8 */
+ u16 PAD[1];
+ u16 pcmciaunderflowtimer; /* rev8 */
+ u16 PAD[1];
+
+ /* interrupt */
+ u32 intstatus; /* 0x020, rev8 */
+ u32 hostintmask; /* rev8 */
+ u32 intmask; /* rev8 */
+ u32 sbintstatus; /* rev8 */
+ u32 sbintmask; /* rev8 */
+ u32 funcintmask; /* rev4 */
+ u32 PAD[2];
+ u32 tosbmailbox; /* 0x040, rev8 */
+ u32 tohostmailbox; /* rev8 */
+ u32 tosbmailboxdata; /* rev8 */
+ u32 tohostmailboxdata; /* rev8 */
+
+ /* synchronized access to registers in SDIO clock domain */
+ u32 sdioaccess; /* 0x050, rev8 */
+ u32 PAD[3];
+
+ /* PCMCIA frame control */
+ u8 pcmciaframectrl; /* 0x060, rev8 */
+ u8 PAD[3];
+ u8 pcmciawatermark; /* rev8 */
+ u8 PAD[155];
+
+ /* interrupt batching control */
+ u32 intrcvlazy; /* 0x100, rev8 */
+ u32 PAD[3];
+
+ /* counters */
+ u32 cmd52rd; /* 0x110, rev8 */
+ u32 cmd52wr; /* rev8 */
+ u32 cmd53rd; /* rev8 */
+ u32 cmd53wr; /* rev8 */
+ u32 abort; /* rev8 */
+ u32 datacrcerror; /* rev8 */
+ u32 rdoutofsync; /* rev8 */
+ u32 wroutofsync; /* rev8 */
+ u32 writebusy; /* rev8 */
+ u32 readwait; /* rev8 */
+ u32 readterm; /* rev8 */
+ u32 writeterm; /* rev8 */
+ u32 PAD[40];
+ u32 clockctlstatus; /* rev8 */
+ u32 PAD[7];
+
+ u32 PAD[128]; /* DMA engines */
+
+ /* SDIO/PCMCIA CIS region */
+ char cis[512]; /* 0x400-0x5ff, rev6 */
+
+ /* PCMCIA function control registers */
+ char pcmciafcr[256]; /* 0x600-6ff, rev6 */
+ u16 PAD[55];
+
+ /* PCMCIA backplane access */
+ u16 backplanecsr; /* 0x76E, rev6 */
+ u16 backplaneaddr0; /* rev6 */
+ u16 backplaneaddr1; /* rev6 */
+ u16 backplaneaddr2; /* rev6 */
+ u16 backplaneaddr3; /* rev6 */
+ u16 backplanedata0; /* rev6 */
+ u16 backplanedata1; /* rev6 */
+ u16 backplanedata2; /* rev6 */
+ u16 backplanedata3; /* rev6 */
+ u16 PAD[31];
+
+ /* sprom "size" & "blank" info */
+ u16 spromstatus; /* 0x7BE, rev2 */
+ u32 PAD[464];
+
+ u16 PAD[0x80];
+};
+
+/* Register/deregister interrupt handler. */
+int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev);
+int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev);
+
+/* sdio device register access interface */
+u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
+u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
+void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, u8 data,
+ int *ret);
+void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data,
+ int *ret);
+
+/* Buffer transfer to/from device (client) core via cmd53.
+ * fn: function number
+ * flags: backplane width, address increment, sync/async
+ * buf: pointer to memory data buffer
+ * nbytes: number of bytes to transfer to/from buf
+ * pkt: pointer to packet associated with buf (if any)
+ * complete: callback function for command completion (async only)
+ * handle: handle for completion callback (first arg in callback)
+ * Returns 0 or error code.
+ * NOTE: Async operation is not currently supported.
+ */
+int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
+ struct sk_buff_head *pktq);
+int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);
+
+int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt);
+int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);
+int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
+ struct sk_buff_head *pktq, uint totlen);
+
+/* Flags bits */
+
+/* Four-byte target (backplane) width (vs. two-byte) */
+#define SDIO_REQ_4BYTE 0x1
+/* Fixed address (FIFO) (vs. incrementing address) */
+#define SDIO_REQ_FIXED 0x2
+
+/* Read/write to memory block (F1, no FIFO) via CMD53 (sync only).
+ * rw: read or write (0/1)
+ * addr: direct SDIO address
+ * buf: pointer to memory data buffer
+ * nbytes: number of bytes to transfer to/from buf
+ * Returns 0 or error code.
+ */
+int brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
+ u8 *data, uint size);
+
+/* Issue an abort to the specified function */
+int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn);
+
+struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
+void brcmf_sdio_remove(struct brcmf_sdio *bus);
+void brcmf_sdio_isr(struct brcmf_sdio *bus);
+
+void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick);
+void brcmf_sdio_wowl_config(struct device *dev, bool enabled);
+
+#endif /* BRCMFMAC_SDIO_H */
+++ /dev/null
-/*
- * Copyright (c) 2010 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef _BRCM_SDH_H_
-#define _BRCM_SDH_H_
-
-#include <linux/skbuff.h>
-#include <linux/firmware.h>
-#include "firmware.h"
-
-#define SDIO_FUNC_0 0
-#define SDIO_FUNC_1 1
-#define SDIO_FUNC_2 2
-
-#define SDIOD_FBR_SIZE 0x100
-
-/* io_en */
-#define SDIO_FUNC_ENABLE_1 0x02
-#define SDIO_FUNC_ENABLE_2 0x04
-
-/* io_rdys */
-#define SDIO_FUNC_READY_1 0x02
-#define SDIO_FUNC_READY_2 0x04
-
-/* intr_status */
-#define INTR_STATUS_FUNC1 0x2
-#define INTR_STATUS_FUNC2 0x4
-
-/* Maximum number of I/O funcs */
-#define SDIOD_MAX_IOFUNCS 7
-
-/* mask of register map */
-#define REG_F0_REG_MASK 0x7FF
-#define REG_F1_MISC_MASK 0x1FFFF
-
-/* as of sdiod rev 0, supports 3 functions */
-#define SBSDIO_NUM_FUNCTION 3
-
-/* function 0 vendor specific CCCR registers */
-#define SDIO_CCCR_BRCM_CARDCAP 0xf0
-#define SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT 0x02
-#define SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT 0x04
-#define SDIO_CCCR_BRCM_CARDCAP_CMD_NODEC 0x08
-#define SDIO_CCCR_BRCM_CARDCTRL 0xf1
-#define SDIO_CCCR_BRCM_CARDCTRL_WLANRESET 0x02
-#define SDIO_CCCR_BRCM_SEPINT 0xf2
-
-#define SDIO_SEPINT_MASK 0x01
-#define SDIO_SEPINT_OE 0x02
-#define SDIO_SEPINT_ACT_HI 0x04
-
-/* function 1 miscellaneous registers */
-
-/* sprom command and status */
-#define SBSDIO_SPROM_CS 0x10000
-/* sprom info register */
-#define SBSDIO_SPROM_INFO 0x10001
-/* sprom indirect access data byte 0 */
-#define SBSDIO_SPROM_DATA_LOW 0x10002
-/* sprom indirect access data byte 1 */
-#define SBSDIO_SPROM_DATA_HIGH 0x10003
-/* sprom indirect access addr byte 0 */
-#define SBSDIO_SPROM_ADDR_LOW 0x10004
-/* gpio select */
-#define SBSDIO_GPIO_SELECT 0x10005
-/* gpio output */
-#define SBSDIO_GPIO_OUT 0x10006
-/* gpio enable */
-#define SBSDIO_GPIO_EN 0x10007
-/* rev < 7, watermark for sdio device */
-#define SBSDIO_WATERMARK 0x10008
-/* control busy signal generation */
-#define SBSDIO_DEVICE_CTL 0x10009
-
-/* SB Address Window Low (b15) */
-#define SBSDIO_FUNC1_SBADDRLOW 0x1000A
-/* SB Address Window Mid (b23:b16) */
-#define SBSDIO_FUNC1_SBADDRMID 0x1000B
-/* SB Address Window High (b31:b24) */
-#define SBSDIO_FUNC1_SBADDRHIGH 0x1000C
-/* Frame Control (frame term/abort) */
-#define SBSDIO_FUNC1_FRAMECTRL 0x1000D
-/* ChipClockCSR (ALP/HT ctl/status) */
-#define SBSDIO_FUNC1_CHIPCLKCSR 0x1000E
-/* SdioPullUp (on cmd, d0-d2) */
-#define SBSDIO_FUNC1_SDIOPULLUP 0x1000F
-/* Write Frame Byte Count Low */
-#define SBSDIO_FUNC1_WFRAMEBCLO 0x10019
-/* Write Frame Byte Count High */
-#define SBSDIO_FUNC1_WFRAMEBCHI 0x1001A
-/* Read Frame Byte Count Low */
-#define SBSDIO_FUNC1_RFRAMEBCLO 0x1001B
-/* Read Frame Byte Count High */
-#define SBSDIO_FUNC1_RFRAMEBCHI 0x1001C
-/* MesBusyCtl (rev 11) */
-#define SBSDIO_FUNC1_MESBUSYCTRL 0x1001D
-/* Sdio Core Rev 12 */
-#define SBSDIO_FUNC1_WAKEUPCTRL 0x1001E
-#define SBSDIO_FUNC1_WCTRL_ALPWAIT_MASK 0x1
-#define SBSDIO_FUNC1_WCTRL_ALPWAIT_SHIFT 0
-#define SBSDIO_FUNC1_WCTRL_HTWAIT_MASK 0x2
-#define SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT 1
-#define SBSDIO_FUNC1_SLEEPCSR 0x1001F
-#define SBSDIO_FUNC1_SLEEPCSR_KSO_MASK 0x1
-#define SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT 0
-#define SBSDIO_FUNC1_SLEEPCSR_KSO_EN 1
-#define SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK 0x2
-#define SBSDIO_FUNC1_SLEEPCSR_DEVON_SHIFT 1
-
-#define SBSDIO_FUNC1_MISC_REG_START 0x10000 /* f1 misc register start */
-#define SBSDIO_FUNC1_MISC_REG_LIMIT 0x1001F /* f1 misc register end */
-
-/* function 1 OCP space */
-
-/* sb offset addr is <= 15 bits, 32k */
-#define SBSDIO_SB_OFT_ADDR_MASK 0x07FFF
-#define SBSDIO_SB_OFT_ADDR_LIMIT 0x08000
-/* with b15, maps to 32-bit SB access */
-#define SBSDIO_SB_ACCESS_2_4B_FLAG 0x08000
-
-/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */
-
-#define SBSDIO_SBADDRLOW_MASK 0x80 /* Valid bits in SBADDRLOW */
-#define SBSDIO_SBADDRMID_MASK 0xff /* Valid bits in SBADDRMID */
-#define SBSDIO_SBADDRHIGH_MASK 0xffU /* Valid bits in SBADDRHIGH */
-/* Address bits from SBADDR regs */
-#define SBSDIO_SBWINDOW_MASK 0xffff8000
-
-#define SDIOH_READ 0 /* Read request */
-#define SDIOH_WRITE 1 /* Write request */
-
-#define SDIOH_DATA_FIX 0 /* Fixed addressing */
-#define SDIOH_DATA_INC 1 /* Incremental addressing */
-
-/* internal return code */
-#define SUCCESS 0
-#define ERROR 1
-
-/* Packet alignment for most efficient SDIO (can change based on platform) */
-#define BRCMF_SDALIGN (1 << 6)
-
-/* watchdog polling interval in ms */
-#define BRCMF_WD_POLL_MS 10
-
-struct brcmf_sdreg {
- int func;
- int offset;
- int value;
-};
-
-struct brcmf_sdio;
-
-struct brcmf_sdio_dev {
- struct sdio_func *func[SDIO_MAX_FUNCS];
- u8 num_funcs; /* Supported funcs on client */
- u32 sbwad; /* Save backplane window address */
- struct brcmf_sdio *bus;
- atomic_t suspend; /* suspend flag */
- wait_queue_head_t request_word_wait;
- wait_queue_head_t request_buffer_wait;
- struct device *dev;
- struct brcmf_bus *bus_if;
- struct brcmfmac_sdio_platform_data *pdata;
- bool oob_irq_requested;
- bool irq_en; /* irq enable flags */
- spinlock_t irq_en_lock;
- bool irq_wake; /* irq wake enable flags */
- bool sg_support;
- uint max_request_size;
- ushort max_segment_count;
- uint max_segment_size;
- uint txglomsz;
- struct sg_table sgtable;
- char fw_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
- char nvram_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
- bool wowl_enabled;
-};
-
-/* sdio core registers */
-struct sdpcmd_regs {
- u32 corecontrol; /* 0x00, rev8 */
- u32 corestatus; /* rev8 */
- u32 PAD[1];
- u32 biststatus; /* rev8 */
-
- /* PCMCIA access */
- u16 pcmciamesportaladdr; /* 0x010, rev8 */
- u16 PAD[1];
- u16 pcmciamesportalmask; /* rev8 */
- u16 PAD[1];
- u16 pcmciawrframebc; /* rev8 */
- u16 PAD[1];
- u16 pcmciaunderflowtimer; /* rev8 */
- u16 PAD[1];
-
- /* interrupt */
- u32 intstatus; /* 0x020, rev8 */
- u32 hostintmask; /* rev8 */
- u32 intmask; /* rev8 */
- u32 sbintstatus; /* rev8 */
- u32 sbintmask; /* rev8 */
- u32 funcintmask; /* rev4 */
- u32 PAD[2];
- u32 tosbmailbox; /* 0x040, rev8 */
- u32 tohostmailbox; /* rev8 */
- u32 tosbmailboxdata; /* rev8 */
- u32 tohostmailboxdata; /* rev8 */
-
- /* synchronized access to registers in SDIO clock domain */
- u32 sdioaccess; /* 0x050, rev8 */
- u32 PAD[3];
-
- /* PCMCIA frame control */
- u8 pcmciaframectrl; /* 0x060, rev8 */
- u8 PAD[3];
- u8 pcmciawatermark; /* rev8 */
- u8 PAD[155];
-
- /* interrupt batching control */
- u32 intrcvlazy; /* 0x100, rev8 */
- u32 PAD[3];
-
- /* counters */
- u32 cmd52rd; /* 0x110, rev8 */
- u32 cmd52wr; /* rev8 */
- u32 cmd53rd; /* rev8 */
- u32 cmd53wr; /* rev8 */
- u32 abort; /* rev8 */
- u32 datacrcerror; /* rev8 */
- u32 rdoutofsync; /* rev8 */
- u32 wroutofsync; /* rev8 */
- u32 writebusy; /* rev8 */
- u32 readwait; /* rev8 */
- u32 readterm; /* rev8 */
- u32 writeterm; /* rev8 */
- u32 PAD[40];
- u32 clockctlstatus; /* rev8 */
- u32 PAD[7];
-
- u32 PAD[128]; /* DMA engines */
-
- /* SDIO/PCMCIA CIS region */
- char cis[512]; /* 0x400-0x5ff, rev6 */
-
- /* PCMCIA function control registers */
- char pcmciafcr[256]; /* 0x600-6ff, rev6 */
- u16 PAD[55];
-
- /* PCMCIA backplane access */
- u16 backplanecsr; /* 0x76E, rev6 */
- u16 backplaneaddr0; /* rev6 */
- u16 backplaneaddr1; /* rev6 */
- u16 backplaneaddr2; /* rev6 */
- u16 backplaneaddr3; /* rev6 */
- u16 backplanedata0; /* rev6 */
- u16 backplanedata1; /* rev6 */
- u16 backplanedata2; /* rev6 */
- u16 backplanedata3; /* rev6 */
- u16 PAD[31];
-
- /* sprom "size" & "blank" info */
- u16 spromstatus; /* 0x7BE, rev2 */
- u32 PAD[464];
-
- u16 PAD[0x80];
-};
-
-/* Register/deregister interrupt handler. */
-int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev);
-int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev);
-
-/* sdio device register access interface */
-u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
-u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
-void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, u8 data,
- int *ret);
-void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data,
- int *ret);
-
-/* Buffer transfer to/from device (client) core via cmd53.
- * fn: function number
- * flags: backplane width, address increment, sync/async
- * buf: pointer to memory data buffer
- * nbytes: number of bytes to transfer to/from buf
- * pkt: pointer to packet associated with buf (if any)
- * complete: callback function for command completion (async only)
- * handle: handle for completion callback (first arg in callback)
- * Returns 0 or error code.
- * NOTE: Async operation is not currently supported.
- */
-int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
- struct sk_buff_head *pktq);
-int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);
-
-int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt);
-int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes);
-int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
- struct sk_buff_head *pktq, uint totlen);
-
-/* Flags bits */
-
-/* Four-byte target (backplane) width (vs. two-byte) */
-#define SDIO_REQ_4BYTE 0x1
-/* Fixed address (FIFO) (vs. incrementing address) */
-#define SDIO_REQ_FIXED 0x2
-
-/* Read/write to memory block (F1, no FIFO) via CMD53 (sync only).
- * rw: read or write (0/1)
- * addr: direct SDIO address
- * buf: pointer to memory data buffer
- * nbytes: number of bytes to transfer to/from buf
- * Returns 0 or error code.
- */
-int brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
- u8 *data, uint size);
-
-/* Issue an abort to the specified function */
-int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn);
-
-struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
-void brcmf_sdio_remove(struct brcmf_sdio *bus);
-void brcmf_sdio_isr(struct brcmf_sdio *bus);
-
-void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick);
-void brcmf_sdio_wowl_config(struct device *dev, bool enabled);
-
-#endif /* _BRCM_SDH_H_ */
projects / deliverable / linux.git / commitdiff
