From: David S. Miller Date: Tue, 8 May 2012 03:35:40 +0000 (-0400) Subject: Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0d6c4a2;p=deliverable%2Flinux.git Merge git://git./linux/kernel/git/davem/net Conflicts: drivers/net/ethernet/intel/e1000e/param.c drivers/net/wireless/iwlwifi/iwl-agn-rx.c drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c drivers/net/wireless/iwlwifi/iwl-trans.h Resolved the iwlwifi conflict with mainline using 3-way diff posted by John Linville and Stephen Rothwell. In 'net' we added a bug fix to make iwlwifi report a more accurate skb->truesize but this conflicted with RX path changes that happened meanwhile in net-next. In e1000e a conflict arose in the validation code for settings of adapter->itr. 'net-next' had more sophisticated logic so that logic was used. Signed-off-by: David S. Miller --- 0d6c4a2e4641bbc556dd74d3aa158c413a972492 diff --cc drivers/net/ethernet/intel/e1000e/param.c index feb6eebb0021,16adeb9418a8..42444d14aae6 --- a/drivers/net/ethernet/intel/e1000e/param.c +++ b/drivers/net/ethernet/intel/e1000e/param.c @@@ -344,53 -344,60 +344,94 @@@ void __devinit e1000e_check_options(str if (num_InterruptThrottleRate > bd) { adapter->itr = InterruptThrottleRate[bd]; - - /* - * Make sure a message is printed for non-special - * values. And in case of an invalid option, display - * warning, use default and got through itr/itr_setting - * adjustment logic below - */ - if ((adapter->itr > 4) && - e1000_validate_option(&adapter->itr, &opt, adapter)) - adapter->itr = opt.def; + switch (adapter->itr) { + case 0: + e_info("%s turned off\n", opt.name); + break; + case 1: + e_info("%s set to dynamic mode\n", opt.name); + adapter->itr_setting = adapter->itr; + adapter->itr = 20000; + break; + case 3: + e_info("%s set to dynamic conservative mode\n", + opt.name); + adapter->itr_setting = adapter->itr; + adapter->itr = 20000; + break; + case 4: + e_info("%s set to simplified (2000-8000 ints) mode\n", + opt.name); + adapter->itr_setting = 4; + break; + default: + /* + * Save the setting, because the dynamic bits + * change itr. + */ + if (e1000_validate_option(&adapter->itr, &opt, + adapter) && + (adapter->itr == 3)) { + /* + * In case of invalid user value, + * default to conservative mode. + */ + adapter->itr_setting = adapter->itr; + adapter->itr = 20000; + } else { + /* + * Clear the lower two bits because + * they are used as control. + */ + adapter->itr_setting = + adapter->itr & ~3; + } + break; + } } else { - adapter->itr_setting = opt.def; + /* + * If no option specified, use default value and go + * through the logic below to adjust itr/itr_setting + */ + adapter->itr = opt.def; + + /* + * Make sure a message is printed for non-special + * default values + */ + if (adapter->itr > 40) + e_info("%s set to default %d\n", opt.name, + adapter->itr); + } + + adapter->itr_setting = adapter->itr; + switch (adapter->itr) { + case 0: + e_info("%s turned off\n", opt.name); + break; + case 1: + e_info("%s set to dynamic mode\n", opt.name); + adapter->itr = 20000; + break; + case 3: + e_info("%s set to dynamic conservative mode\n", + opt.name); adapter->itr = 20000; + break; + case 4: + e_info("%s set to simplified (2000-8000 ints) mode\n", + opt.name); + break; + default: + /* + * Save the setting, because the dynamic bits + * change itr. + * + * Clear the lower two bits because + * they are used as control. + */ + adapter->itr_setting &= ~3; + break; } } { /* Interrupt Mode */ diff --cc drivers/net/wireless/iwlwifi/iwl-1000.c index 8c7a0cd13854,8d80e233bc7a..2629a6602dfa --- a/drivers/net/wireless/iwlwifi/iwl-1000.c +++ b/drivers/net/wireless/iwlwifi/iwl-1000.c @@@ -24,16 -24,30 +24,16 @@@ * *****************************************************************************/ -#include #include -#include -#include -#include -#include -#include -#include -#include #include - -#include "iwl-eeprom.h" -#include "iwl-dev.h" -#include "iwl-core.h" -#include "iwl-io.h" -#include "iwl-agn.h" -#include "iwl-agn-hw.h" -#include "iwl-shared.h" +#include "iwl-config.h" #include "iwl-cfg.h" -#include "iwl-prph.h" +#include "iwl-csr.h" +#include "iwl-agn-hw.h" /* Highest firmware API version supported */ - #define IWL1000_UCODE_API_MAX 6 - #define IWL100_UCODE_API_MAX 6 + #define IWL1000_UCODE_API_MAX 5 + #define IWL100_UCODE_API_MAX 5 /* Oldest version we won't warn about */ #define IWL1000_UCODE_API_OK 5 diff --cc drivers/net/wireless/iwlwifi/iwl-5000.c index 67d4ef26043b,de0920c74cdd..8e26bc825f23 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@@ -70,8 -330,8 +74,9 @@@ static const struct iwl_ht_params iwl50 #define IWL_DEVICE_5000 \ .fw_name_pre = IWL5000_FW_PRE, \ .ucode_api_max = IWL5000_UCODE_API_MAX, \ + .ucode_api_ok = IWL5000_UCODE_API_OK, \ .ucode_api_min = IWL5000_UCODE_API_MIN, \ + .device_family = IWL_DEVICE_FAMILY_5000, \ .max_inst_size = IWLAGN_RTC_INST_SIZE, \ .max_data_size = IWLAGN_RTC_DATA_SIZE, \ .eeprom_ver = EEPROM_5000_EEPROM_VERSION, \ @@@ -115,8 -376,8 +120,9 @@@ const struct iwl_cfg iwl5350_agn_cfg = .name = "Intel(R) WiMAX/WiFi Link 5350 AGN", .fw_name_pre = IWL5000_FW_PRE, .ucode_api_max = IWL5000_UCODE_API_MAX, + .ucode_api_ok = IWL5000_UCODE_API_OK, .ucode_api_min = IWL5000_UCODE_API_MIN, + .device_family = IWL_DEVICE_FAMILY_5000, .max_inst_size = IWLAGN_RTC_INST_SIZE, .max_data_size = IWLAGN_RTC_DATA_SIZE, .eeprom_ver = EEPROM_5050_EEPROM_VERSION, @@@ -130,8 -392,8 +136,9 @@@ #define IWL_DEVICE_5150 \ .fw_name_pre = IWL5150_FW_PRE, \ .ucode_api_max = IWL5150_UCODE_API_MAX, \ + .ucode_api_ok = IWL5150_UCODE_API_OK, \ .ucode_api_min = IWL5150_UCODE_API_MIN, \ + .device_family = IWL_DEVICE_FAMILY_5150, \ .max_inst_size = IWLAGN_RTC_INST_SIZE, \ .max_data_size = IWLAGN_RTC_DATA_SIZE, \ .eeprom_ver = EEPROM_5050_EEPROM_VERSION, \ diff --cc drivers/net/wireless/iwlwifi/iwl-6000.c index 08afedf4b3ec,f0c91505a7f7..381b02cf339c --- a/drivers/net/wireless/iwlwifi/iwl-6000.c +++ b/drivers/net/wireless/iwlwifi/iwl-6000.c @@@ -190,9 -390,8 +192,9 @@@ const struct iwl_cfg iwl6005_2agn_mow2_ #define IWL_DEVICE_6030 \ .fw_name_pre = IWL6030_FW_PRE, \ .ucode_api_max = IWL6000G2_UCODE_API_MAX, \ - .ucode_api_ok = IWL6000G2_UCODE_API_OK, \ + .ucode_api_ok = IWL6000G2B_UCODE_API_OK, \ .ucode_api_min = IWL6000G2_UCODE_API_MIN, \ + .device_family = IWL_DEVICE_FAMILY_6030, \ .max_inst_size = IWL60_RTC_INST_SIZE, \ .max_data_size = IWL60_RTC_DATA_SIZE, \ .eeprom_ver = EEPROM_6030_EEPROM_VERSION, \ diff --cc drivers/net/wireless/iwlwifi/iwl-agn-rx.c index f94122387e25,22474608a70b..0c252c5d8bf1 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c @@@ -752,15 -787,25 +751,24 @@@ static void iwlagn_pass_packet_to_mac80 iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats)) return; - skb = dev_alloc_skb(128); + /* Dont use dev_alloc_skb(), we'll have enough headroom once + * ieee80211_hdr pulled. + */ + skb = alloc_skb(128, GFP_ATOMIC); if (!skb) { - IWL_ERR(priv, "dev_alloc_skb failed\n"); + IWL_ERR(priv, "alloc_skb failed\n"); return; } + hdrlen = min_t(unsigned int, len, skb_tailroom(skb)); + memcpy(skb_put(skb, hdrlen), hdr, hdrlen); + fraglen = len - hdrlen; + + if (fraglen) { - int offset = (void *)hdr + hdrlen - rxb_addr(rxb); ++ int offset = (void *)hdr - rxb_addr(rxb) + rxb_offset(rxb); - offset = (void *)hdr - rxb_addr(rxb) + rxb_offset(rxb); - p = rxb_steal_page(rxb); - skb_add_rx_frag(skb, 0, p, offset, len, len); + skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, + fraglen, rxb->truesize); + } - iwl_update_stats(priv, false, fc, len); /* * Wake any queues that were stopped due to a passive channel tx diff --cc drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c index d2239aad7f11,aa7aea168138..08517d3c80bb --- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c @@@ -373,89 -374,72 +373,90 @@@ static void iwl_rx_handle_rxbuf(struct if (WARN_ON(!rxb)) return; - rxcb.truesize = PAGE_SIZE << hw_params(trans).rx_page_order; - dma_unmap_page(trans->dev, rxb->page_dma, - rxcb.truesize, - DMA_FROM_DEVICE); - - rxcb._page = rxb->page; - pkt = rxb_addr(&rxcb); - - IWL_DEBUG_RX(trans, "%s, 0x%02x\n", - get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); + dma_unmap_page(trans->dev, rxb->page_dma, max_len, DMA_FROM_DEVICE); + while (offset + sizeof(u32) + sizeof(struct iwl_cmd_header) < max_len) { + struct iwl_rx_packet *pkt; + struct iwl_device_cmd *cmd; + u16 sequence; + bool reclaim; + int index, cmd_index, err, len; + struct iwl_rx_cmd_buffer rxcb = { + ._offset = offset, + ._page = rxb->page, + ._page_stolen = false, ++ .truesize = max_len, + }; - len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; - len += sizeof(u32); /* account for status word */ - trace_iwlwifi_dev_rx(trans->dev, pkt, len); + pkt = rxb_addr(&rxcb); - /* Reclaim a command buffer only if this packet is a response - * to a (driver-originated) command. - * If the packet (e.g. Rx frame) originated from uCode, - * there is no command buffer to reclaim. - * Ucode should set SEQ_RX_FRAME bit if ucode-originated, - * but apparently a few don't get set; catch them here. */ - reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME); - if (reclaim) { - int i; + if (pkt->len_n_flags == cpu_to_le32(FH_RSCSR_FRAME_INVALID)) + break; - for (i = 0; i < trans_pcie->n_no_reclaim_cmds; i++) { - if (trans_pcie->no_reclaim_cmds[i] == pkt->hdr.cmd) { - reclaim = false; - break; + IWL_DEBUG_RX(trans, "cmd at offset %d: %s (0x%.2x)\n", + rxcb._offset, + trans_pcie_get_cmd_string(trans_pcie, pkt->hdr.cmd), + pkt->hdr.cmd); + + len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; + len += sizeof(u32); /* account for status word */ + trace_iwlwifi_dev_rx(trans->dev, pkt, len); + + /* Reclaim a command buffer only if this packet is a response + * to a (driver-originated) command. + * If the packet (e.g. Rx frame) originated from uCode, + * there is no command buffer to reclaim. + * Ucode should set SEQ_RX_FRAME bit if ucode-originated, + * but apparently a few don't get set; catch them here. */ + reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME); + if (reclaim) { + int i; + + for (i = 0; i < trans_pcie->n_no_reclaim_cmds; i++) { + if (trans_pcie->no_reclaim_cmds[i] == + pkt->hdr.cmd) { + reclaim = false; + break; + } } } - } - sequence = le16_to_cpu(pkt->hdr.sequence); - index = SEQ_TO_INDEX(sequence); - cmd_index = get_cmd_index(&txq->q, index); + sequence = le16_to_cpu(pkt->hdr.sequence); + index = SEQ_TO_INDEX(sequence); + cmd_index = get_cmd_index(&txq->q, index); - if (reclaim) - cmd = txq->cmd[cmd_index]; - else - cmd = NULL; + if (reclaim) + cmd = txq->entries[cmd_index].cmd; + else + cmd = NULL; - err = iwl_op_mode_rx(trans->op_mode, &rxcb, cmd); + err = iwl_op_mode_rx(trans->op_mode, &rxcb, cmd); - /* - * XXX: After here, we should always check rxcb._page - * against NULL before touching it or its virtual - * memory (pkt). Because some rx_handler might have - * already taken or freed the pages. - */ + /* + * After here, we should always check rxcb._page_stolen, + * if it is true then one of the handlers took the page. + */ - if (reclaim) { - /* Invoke any callbacks, transfer the buffer to caller, - * and fire off the (possibly) blocking - * iwl_trans_send_cmd() - * as we reclaim the driver command queue */ - if (rxcb._page) - iwl_tx_cmd_complete(trans, &rxcb, err); - else - IWL_WARN(trans, "Claim null rxb?\n"); + if (reclaim) { + /* Invoke any callbacks, transfer the buffer to caller, + * and fire off the (possibly) blocking + * iwl_trans_send_cmd() + * as we reclaim the driver command queue */ + if (!rxcb._page_stolen) + iwl_tx_cmd_complete(trans, &rxcb, err); + else + IWL_WARN(trans, "Claim null rxb?\n"); + } + + page_stolen |= rxcb._page_stolen; + offset += ALIGN(len, FH_RSCSR_FRAME_ALIGN); } - /* page was stolen from us */ - if (rxcb._page == NULL) + /* page was stolen from us -- free our reference */ + if (page_stolen) { + __free_pages(rxb->page, trans_pcie->rx_page_order); rxb->page = NULL; + } /* Reuse the page if possible. For notification packets and * SKBs that fail to Rx correctly, add them back into the diff --cc drivers/net/wireless/iwlwifi/iwl-trans.h index 7018d313a4e0,fdf97886a5e4..79a1e7ae4995 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@@ -256,8 -260,7 +256,9 @@@ static inline void iwl_free_resp(struc struct iwl_rx_cmd_buffer { struct page *_page; + int _offset; + bool _page_stolen; + unsigned int truesize; }; static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r) diff --cc drivers/net/wireless/ti/wl1251/main.c index 41302c7b1ad0,000000000000..d1afb8e3b2ef mode 100644,000000..100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@@ -1,1471 -1,0 +1,1472 @@@ +/* + * This file is part of wl1251 + * + * Copyright (C) 2008-2009 Nokia Corporation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "wl1251.h" +#include "wl12xx_80211.h" +#include "reg.h" +#include "io.h" +#include "cmd.h" +#include "event.h" +#include "tx.h" +#include "rx.h" +#include "ps.h" +#include "init.h" +#include "debugfs.h" +#include "boot.h" + +void wl1251_enable_interrupts(struct wl1251 *wl) +{ + wl->if_ops->enable_irq(wl); +} + +void wl1251_disable_interrupts(struct wl1251 *wl) +{ + wl->if_ops->disable_irq(wl); +} + +static int wl1251_power_off(struct wl1251 *wl) +{ + return wl->if_ops->power(wl, false); +} + +static int wl1251_power_on(struct wl1251 *wl) +{ + return wl->if_ops->power(wl, true); +} + +static int wl1251_fetch_firmware(struct wl1251 *wl) +{ + const struct firmware *fw; + struct device *dev = wiphy_dev(wl->hw->wiphy); + int ret; + + ret = request_firmware(&fw, WL1251_FW_NAME, dev); + + if (ret < 0) { + wl1251_error("could not get firmware: %d", ret); + return ret; + } + + if (fw->size % 4) { + wl1251_error("firmware size is not multiple of 32 bits: %zu", + fw->size); + ret = -EILSEQ; + goto out; + } + + wl->fw_len = fw->size; + wl->fw = vmalloc(wl->fw_len); + + if (!wl->fw) { + wl1251_error("could not allocate memory for the firmware"); + ret = -ENOMEM; + goto out; + } + + memcpy(wl->fw, fw->data, wl->fw_len); + + ret = 0; + +out: + release_firmware(fw); + + return ret; +} + +static int wl1251_fetch_nvs(struct wl1251 *wl) +{ + const struct firmware *fw; + struct device *dev = wiphy_dev(wl->hw->wiphy); + int ret; + + ret = request_firmware(&fw, WL1251_NVS_NAME, dev); + + if (ret < 0) { + wl1251_error("could not get nvs file: %d", ret); + return ret; + } + + if (fw->size % 4) { + wl1251_error("nvs size is not multiple of 32 bits: %zu", + fw->size); + ret = -EILSEQ; + goto out; + } + + wl->nvs_len = fw->size; + wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL); + + if (!wl->nvs) { + wl1251_error("could not allocate memory for the nvs file"); + ret = -ENOMEM; + goto out; + } + + ret = 0; + +out: + release_firmware(fw); + + return ret; +} + +static void wl1251_fw_wakeup(struct wl1251 *wl) +{ + u32 elp_reg; + + elp_reg = ELPCTRL_WAKE_UP; + wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); + elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR); + + if (!(elp_reg & ELPCTRL_WLAN_READY)) + wl1251_warning("WLAN not ready"); +} + +static int wl1251_chip_wakeup(struct wl1251 *wl) +{ + int ret; + + ret = wl1251_power_on(wl); + if (ret < 0) + return ret; + + msleep(WL1251_POWER_ON_SLEEP); + wl->if_ops->reset(wl); + + /* We don't need a real memory partition here, because we only want + * to use the registers at this point. */ + wl1251_set_partition(wl, + 0x00000000, + 0x00000000, + REGISTERS_BASE, + REGISTERS_DOWN_SIZE); + + /* ELP module wake up */ + wl1251_fw_wakeup(wl); + + /* whal_FwCtrl_BootSm() */ + + /* 0. read chip id from CHIP_ID */ + wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B); + + /* 1. check if chip id is valid */ + + switch (wl->chip_id) { + case CHIP_ID_1251_PG12: + wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)", + wl->chip_id); + break; + case CHIP_ID_1251_PG11: + wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)", + wl->chip_id); + break; + case CHIP_ID_1251_PG10: + default: + wl1251_error("unsupported chip id: 0x%x", wl->chip_id); + ret = -ENODEV; + goto out; + } + + if (wl->fw == NULL) { + ret = wl1251_fetch_firmware(wl); + if (ret < 0) + goto out; + } + + if (wl->nvs == NULL && !wl->use_eeprom) { + /* No NVS from netlink, try to get it from the filesystem */ + ret = wl1251_fetch_nvs(wl); + if (ret < 0) + goto out; + } + +out: + return ret; +} + +#define WL1251_IRQ_LOOP_COUNT 10 +static void wl1251_irq_work(struct work_struct *work) +{ + u32 intr, ctr = WL1251_IRQ_LOOP_COUNT; + struct wl1251 *wl = + container_of(work, struct wl1251, irq_work); + int ret; + + mutex_lock(&wl->mutex); + + wl1251_debug(DEBUG_IRQ, "IRQ work"); + + if (wl->state == WL1251_STATE_OFF) + goto out; + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL); + + intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); + wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr); + + do { + if (wl->data_path) { + wl->rx_counter = wl1251_mem_read32( + wl, wl->data_path->rx_control_addr); + + /* We handle a frmware bug here */ + switch ((wl->rx_counter - wl->rx_handled) & 0xf) { + case 0: + wl1251_debug(DEBUG_IRQ, + "RX: FW and host in sync"); + intr &= ~WL1251_ACX_INTR_RX0_DATA; + intr &= ~WL1251_ACX_INTR_RX1_DATA; + break; + case 1: + wl1251_debug(DEBUG_IRQ, "RX: FW +1"); + intr |= WL1251_ACX_INTR_RX0_DATA; + intr &= ~WL1251_ACX_INTR_RX1_DATA; + break; + case 2: + wl1251_debug(DEBUG_IRQ, "RX: FW +2"); + intr |= WL1251_ACX_INTR_RX0_DATA; + intr |= WL1251_ACX_INTR_RX1_DATA; + break; + default: + wl1251_warning( + "RX: FW and host out of sync: %d", + wl->rx_counter - wl->rx_handled); + break; + } + + wl->rx_handled = wl->rx_counter; + + wl1251_debug(DEBUG_IRQ, "RX counter: %d", + wl->rx_counter); + } + + intr &= wl->intr_mask; + + if (intr == 0) { + wl1251_debug(DEBUG_IRQ, "INTR is 0"); + goto out_sleep; + } + + if (intr & WL1251_ACX_INTR_RX0_DATA) { + wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA"); + wl1251_rx(wl); + } + + if (intr & WL1251_ACX_INTR_RX1_DATA) { + wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA"); + wl1251_rx(wl); + } + + if (intr & WL1251_ACX_INTR_TX_RESULT) { + wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT"); + wl1251_tx_complete(wl); + } + + if (intr & WL1251_ACX_INTR_EVENT_A) { + wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A"); + wl1251_event_handle(wl, 0); + } + + if (intr & WL1251_ACX_INTR_EVENT_B) { + wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B"); + wl1251_event_handle(wl, 1); + } + + if (intr & WL1251_ACX_INTR_INIT_COMPLETE) + wl1251_debug(DEBUG_IRQ, + "WL1251_ACX_INTR_INIT_COMPLETE"); + + if (--ctr == 0) + break; + + intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); + } while (intr); + +out_sleep: + wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask)); + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); +} + +static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel, + u16 beacon_interval, u8 dtim_period) +{ + int ret; + + ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE, + DEFAULT_HW_GEN_MODULATION_TYPE, + wl->tx_mgmt_frm_rate, + wl->tx_mgmt_frm_mod); + if (ret < 0) + goto out; + + + ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval, + dtim_period); + if (ret < 0) + goto out; + + ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); + if (ret < 0) + wl1251_warning("join timeout"); + +out: + return ret; +} + +static void wl1251_filter_work(struct work_struct *work) +{ + struct wl1251 *wl = + container_of(work, struct wl1251, filter_work); + int ret; + + mutex_lock(&wl->mutex); + + if (wl->state == WL1251_STATE_OFF) + goto out; + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int, + wl->dtim_period); + if (ret < 0) + goto out_sleep; + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); +} + +static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) +{ + struct wl1251 *wl = hw->priv; + unsigned long flags; + + skb_queue_tail(&wl->tx_queue, skb); + + /* + * The chip specific setup must run before the first TX packet - + * before that, the tx_work will not be initialized! + */ + + ieee80211_queue_work(wl->hw, &wl->tx_work); + + /* + * The workqueue is slow to process the tx_queue and we need stop + * the queue here, otherwise the queue will get too long. + */ + if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) { + wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues"); + + spin_lock_irqsave(&wl->wl_lock, flags); + ieee80211_stop_queues(wl->hw); + wl->tx_queue_stopped = true; + spin_unlock_irqrestore(&wl->wl_lock, flags); + } +} + +static int wl1251_op_start(struct ieee80211_hw *hw) +{ + struct wl1251 *wl = hw->priv; + struct wiphy *wiphy = hw->wiphy; + int ret = 0; + + wl1251_debug(DEBUG_MAC80211, "mac80211 start"); + + mutex_lock(&wl->mutex); + + if (wl->state != WL1251_STATE_OFF) { + wl1251_error("cannot start because not in off state: %d", + wl->state); + ret = -EBUSY; + goto out; + } + + ret = wl1251_chip_wakeup(wl); + if (ret < 0) + goto out; + + ret = wl1251_boot(wl); + if (ret < 0) + goto out; + + ret = wl1251_hw_init(wl); + if (ret < 0) + goto out; + + ret = wl1251_acx_station_id(wl); + if (ret < 0) + goto out; + + wl->state = WL1251_STATE_ON; + + wl1251_info("firmware booted (%s)", wl->fw_ver); + + /* update hw/fw version info in wiphy struct */ + wiphy->hw_version = wl->chip_id; + strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version)); + +out: + if (ret < 0) + wl1251_power_off(wl); + + mutex_unlock(&wl->mutex); + + return ret; +} + +static void wl1251_op_stop(struct ieee80211_hw *hw) +{ + struct wl1251 *wl = hw->priv; + + wl1251_info("down"); + + wl1251_debug(DEBUG_MAC80211, "mac80211 stop"); + + mutex_lock(&wl->mutex); + + WARN_ON(wl->state != WL1251_STATE_ON); + + if (wl->scanning) { + ieee80211_scan_completed(wl->hw, true); + wl->scanning = false; + } + + wl->state = WL1251_STATE_OFF; + + wl1251_disable_interrupts(wl); + + mutex_unlock(&wl->mutex); + + cancel_work_sync(&wl->irq_work); + cancel_work_sync(&wl->tx_work); + cancel_work_sync(&wl->filter_work); ++ cancel_delayed_work_sync(&wl->elp_work); + + mutex_lock(&wl->mutex); + + /* let's notify MAC80211 about the remaining pending TX frames */ + wl1251_tx_flush(wl); + wl1251_power_off(wl); + + memset(wl->bssid, 0, ETH_ALEN); + wl->listen_int = 1; + wl->bss_type = MAX_BSS_TYPE; + + wl->data_in_count = 0; + wl->rx_counter = 0; + wl->rx_handled = 0; + wl->rx_current_buffer = 0; + wl->rx_last_id = 0; + wl->next_tx_complete = 0; + wl->elp = false; + wl->station_mode = STATION_ACTIVE_MODE; + wl->tx_queue_stopped = false; + wl->power_level = WL1251_DEFAULT_POWER_LEVEL; + wl->rssi_thold = 0; + wl->channel = WL1251_DEFAULT_CHANNEL; + + wl1251_debugfs_reset(wl); + + mutex_unlock(&wl->mutex); +} + +static int wl1251_op_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct wl1251 *wl = hw->priv; + int ret = 0; + + vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | + IEEE80211_VIF_SUPPORTS_CQM_RSSI; + + wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", + vif->type, vif->addr); + + mutex_lock(&wl->mutex); + if (wl->vif) { + ret = -EBUSY; + goto out; + } + + wl->vif = vif; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + wl->bss_type = BSS_TYPE_STA_BSS; + break; + case NL80211_IFTYPE_ADHOC: + wl->bss_type = BSS_TYPE_IBSS; + break; + default: + ret = -EOPNOTSUPP; + goto out; + } + + if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) { + memcpy(wl->mac_addr, vif->addr, ETH_ALEN); + SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); + ret = wl1251_acx_station_id(wl); + if (ret < 0) + goto out; + } + +out: + mutex_unlock(&wl->mutex); + return ret; +} + +static void wl1251_op_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct wl1251 *wl = hw->priv; + + mutex_lock(&wl->mutex); + wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface"); + wl->vif = NULL; + mutex_unlock(&wl->mutex); +} + +static int wl1251_build_qos_null_data(struct wl1251 *wl) +{ + struct ieee80211_qos_hdr template; + + memset(&template, 0, sizeof(template)); + + memcpy(template.addr1, wl->bssid, ETH_ALEN); + memcpy(template.addr2, wl->mac_addr, ETH_ALEN); + memcpy(template.addr3, wl->bssid, ETH_ALEN); + + template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | + IEEE80211_STYPE_QOS_NULLFUNC | + IEEE80211_FCTL_TODS); + + /* FIXME: not sure what priority to use here */ + template.qos_ctrl = cpu_to_le16(0); + + return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template, + sizeof(template)); +} + +static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed) +{ + struct wl1251 *wl = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + int channel, ret = 0; + + channel = ieee80211_frequency_to_channel(conf->channel->center_freq); + + wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", + channel, + conf->flags & IEEE80211_CONF_PS ? "on" : "off", + conf->power_level); + + mutex_lock(&wl->mutex); + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + if (channel != wl->channel) { + wl->channel = channel; + + ret = wl1251_join(wl, wl->bss_type, wl->channel, + wl->beacon_int, wl->dtim_period); + if (ret < 0) + goto out_sleep; + } + + if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { + wl1251_debug(DEBUG_PSM, "psm enabled"); + + wl->psm_requested = true; + + wl->dtim_period = conf->ps_dtim_period; + + ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int, + wl->dtim_period); + + /* + * mac80211 enables PSM only if we're already associated. + */ + ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); + if (ret < 0) + goto out_sleep; + } else if (!(conf->flags & IEEE80211_CONF_PS) && + wl->psm_requested) { + wl1251_debug(DEBUG_PSM, "psm disabled"); + + wl->psm_requested = false; + + if (wl->station_mode != STATION_ACTIVE_MODE) { + ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); + if (ret < 0) + goto out_sleep; + } + } + + if (changed & IEEE80211_CONF_CHANGE_IDLE) { + if (conf->flags & IEEE80211_CONF_IDLE) { + ret = wl1251_ps_set_mode(wl, STATION_IDLE); + if (ret < 0) + goto out_sleep; + } else { + ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); + if (ret < 0) + goto out_sleep; + ret = wl1251_join(wl, wl->bss_type, wl->channel, + wl->beacon_int, wl->dtim_period); + if (ret < 0) + goto out_sleep; + } + } + + if (conf->power_level != wl->power_level) { + ret = wl1251_acx_tx_power(wl, conf->power_level); + if (ret < 0) + goto out_sleep; + + wl->power_level = conf->power_level; + } + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + + return ret; +} + +#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ + FIF_ALLMULTI | \ + FIF_FCSFAIL | \ + FIF_BCN_PRBRESP_PROMISC | \ + FIF_CONTROL | \ + FIF_OTHER_BSS) + +static void wl1251_op_configure_filter(struct ieee80211_hw *hw, + unsigned int changed, + unsigned int *total,u64 multicast) +{ + struct wl1251 *wl = hw->priv; + + wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter"); + + *total &= WL1251_SUPPORTED_FILTERS; + changed &= WL1251_SUPPORTED_FILTERS; + + if (changed == 0) + /* no filters which we support changed */ + return; + + /* FIXME: wl->rx_config and wl->rx_filter are not protected */ + + wl->rx_config = WL1251_DEFAULT_RX_CONFIG; + wl->rx_filter = WL1251_DEFAULT_RX_FILTER; + + if (*total & FIF_PROMISC_IN_BSS) { + wl->rx_config |= CFG_BSSID_FILTER_EN; + wl->rx_config |= CFG_RX_ALL_GOOD; + } + if (*total & FIF_ALLMULTI) + /* + * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive + * all multicast frames + */ + wl->rx_config &= ~CFG_MC_FILTER_EN; + if (*total & FIF_FCSFAIL) + wl->rx_filter |= CFG_RX_FCS_ERROR; + if (*total & FIF_BCN_PRBRESP_PROMISC) { + wl->rx_config &= ~CFG_BSSID_FILTER_EN; + wl->rx_config &= ~CFG_SSID_FILTER_EN; + } + if (*total & FIF_CONTROL) + wl->rx_filter |= CFG_RX_CTL_EN; + if (*total & FIF_OTHER_BSS) + wl->rx_filter &= ~CFG_BSSID_FILTER_EN; + + /* + * FIXME: workqueues need to be properly cancelled on stop(), for + * now let's just disable changing the filter settings. They will + * be updated any on config(). + */ + /* schedule_work(&wl->filter_work); */ +} + +/* HW encryption */ +static int wl1251_set_key_type(struct wl1251 *wl, + struct wl1251_cmd_set_keys *key, + enum set_key_cmd cmd, + struct ieee80211_key_conf *mac80211_key, + const u8 *addr) +{ + switch (mac80211_key->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + if (is_broadcast_ether_addr(addr)) + key->key_type = KEY_WEP_DEFAULT; + else + key->key_type = KEY_WEP_ADDR; + + mac80211_key->hw_key_idx = mac80211_key->keyidx; + break; + case WLAN_CIPHER_SUITE_TKIP: + if (is_broadcast_ether_addr(addr)) + key->key_type = KEY_TKIP_MIC_GROUP; + else + key->key_type = KEY_TKIP_MIC_PAIRWISE; + + mac80211_key->hw_key_idx = mac80211_key->keyidx; + break; + case WLAN_CIPHER_SUITE_CCMP: + if (is_broadcast_ether_addr(addr)) + key->key_type = KEY_AES_GROUP; + else + key->key_type = KEY_AES_PAIRWISE; + mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + break; + default: + wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher); + return -EOPNOTSUPP; + } + + return 0; +} + +static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct wl1251 *wl = hw->priv; + struct wl1251_cmd_set_keys *wl_cmd; + const u8 *addr; + int ret; + + static const u8 bcast_addr[ETH_ALEN] = + { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; + + wl1251_debug(DEBUG_MAC80211, "mac80211 set key"); + + wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL); + if (!wl_cmd) { + ret = -ENOMEM; + goto out; + } + + addr = sta ? sta->addr : bcast_addr; + + wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); + wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); + wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", + key->cipher, key->keyidx, key->keylen, key->flags); + wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen); + + if (is_zero_ether_addr(addr)) { + /* We dont support TX only encryption */ + ret = -EOPNOTSUPP; + goto out; + } + + mutex_lock(&wl->mutex); + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out_unlock; + + switch (cmd) { + case SET_KEY: + wl_cmd->key_action = KEY_ADD_OR_REPLACE; + break; + case DISABLE_KEY: + wl_cmd->key_action = KEY_REMOVE; + break; + default: + wl1251_error("Unsupported key cmd 0x%x", cmd); + break; + } + + ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr); + if (ret < 0) { + wl1251_error("Set KEY type failed"); + goto out_sleep; + } + + if (wl_cmd->key_type != KEY_WEP_DEFAULT) + memcpy(wl_cmd->addr, addr, ETH_ALEN); + + if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) || + (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) { + /* + * We get the key in the following form: + * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes) + * but the target is expecting: + * TKIP - RX MIC - TX MIC + */ + memcpy(wl_cmd->key, key->key, 16); + memcpy(wl_cmd->key + 16, key->key + 24, 8); + memcpy(wl_cmd->key + 24, key->key + 16, 8); + + } else { + memcpy(wl_cmd->key, key->key, key->keylen); + } + wl_cmd->key_size = key->keylen; + + wl_cmd->id = key->keyidx; + wl_cmd->ssid_profile = 0; + + wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd)); + + ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd)); + if (ret < 0) { + wl1251_warning("could not set keys"); + goto out_sleep; + } + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out_unlock: + mutex_unlock(&wl->mutex); + +out: + kfree(wl_cmd); + + return ret; +} + +static int wl1251_op_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_scan_request *req) +{ + struct wl1251 *wl = hw->priv; + struct sk_buff *skb; + size_t ssid_len = 0; + u8 *ssid = NULL; + int ret; + + wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan"); + + if (req->n_ssids) { + ssid = req->ssids[0].ssid; + ssid_len = req->ssids[0].ssid_len; + } + + mutex_lock(&wl->mutex); + + if (wl->scanning) { + wl1251_debug(DEBUG_SCAN, "scan already in progress"); + ret = -EINVAL; + goto out; + } + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len, + req->ie, req->ie_len); + if (!skb) { + ret = -ENOMEM; + goto out; + } + + ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data, + skb->len); + dev_kfree_skb(skb); + if (ret < 0) + goto out_sleep; + + ret = wl1251_cmd_trigger_scan_to(wl, 0); + if (ret < 0) + goto out_sleep; + + wl->scanning = true; + + ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels, + req->n_channels, WL1251_SCAN_NUM_PROBES); + if (ret < 0) { + wl->scanning = false; + goto out_sleep; + } + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + + return ret; +} + +static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct wl1251 *wl = hw->priv; + int ret; + + mutex_lock(&wl->mutex); + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + ret = wl1251_acx_rts_threshold(wl, (u16) value); + if (ret < 0) + wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret); + + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + + return ret; +} + +static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changed) +{ + struct wl1251 *wl = hw->priv; + struct sk_buff *beacon, *skb; + int ret; + + wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed"); + + mutex_lock(&wl->mutex); + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + if (changed & BSS_CHANGED_CQM) { + ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold, + WL1251_DEFAULT_LOW_RSSI_WEIGHT, + WL1251_DEFAULT_LOW_RSSI_DEPTH, + WL1251_ACX_LOW_RSSI_TYPE_EDGE); + if (ret < 0) + goto out; + wl->rssi_thold = bss_conf->cqm_rssi_thold; + } + + if (changed & BSS_CHANGED_BSSID) { + memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN); + + skb = ieee80211_nullfunc_get(wl->hw, wl->vif); + if (!skb) + goto out_sleep; + + ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, + skb->data, skb->len); + dev_kfree_skb(skb); + if (ret < 0) + goto out_sleep; + + ret = wl1251_build_qos_null_data(wl); + if (ret < 0) + goto out; + + if (wl->bss_type != BSS_TYPE_IBSS) { + ret = wl1251_join(wl, wl->bss_type, wl->channel, + wl->beacon_int, wl->dtim_period); + if (ret < 0) + goto out_sleep; + } + } + + if (changed & BSS_CHANGED_ASSOC) { + if (bss_conf->assoc) { + wl->beacon_int = bss_conf->beacon_int; + + skb = ieee80211_pspoll_get(wl->hw, wl->vif); + if (!skb) + goto out_sleep; + + ret = wl1251_cmd_template_set(wl, CMD_PS_POLL, + skb->data, + skb->len); + dev_kfree_skb(skb); + if (ret < 0) + goto out_sleep; + + ret = wl1251_acx_aid(wl, bss_conf->aid); + if (ret < 0) + goto out_sleep; + } else { + /* use defaults when not associated */ + wl->beacon_int = WL1251_DEFAULT_BEACON_INT; + wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; + } + } + if (changed & BSS_CHANGED_ERP_SLOT) { + if (bss_conf->use_short_slot) + ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT); + else + ret = wl1251_acx_slot(wl, SLOT_TIME_LONG); + if (ret < 0) { + wl1251_warning("Set slot time failed %d", ret); + goto out_sleep; + } + } + + if (changed & BSS_CHANGED_ERP_PREAMBLE) { + if (bss_conf->use_short_preamble) + wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); + else + wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG); + } + + if (changed & BSS_CHANGED_ERP_CTS_PROT) { + if (bss_conf->use_cts_prot) + ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE); + else + ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE); + if (ret < 0) { + wl1251_warning("Set ctsprotect failed %d", ret); + goto out_sleep; + } + } + + if (changed & BSS_CHANGED_BEACON) { + beacon = ieee80211_beacon_get(hw, vif); + if (!beacon) + goto out_sleep; + + ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, + beacon->len); + + if (ret < 0) { + dev_kfree_skb(beacon); + goto out_sleep; + } + + ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data, + beacon->len); + + dev_kfree_skb(beacon); + + if (ret < 0) + goto out_sleep; + + ret = wl1251_join(wl, wl->bss_type, wl->beacon_int, + wl->channel, wl->dtim_period); + + if (ret < 0) + goto out_sleep; + } + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); +} + + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_rate wl1251_rates[] = { + { .bitrate = 10, + .hw_value = 0x1, + .hw_value_short = 0x1, }, + { .bitrate = 20, + .hw_value = 0x2, + .hw_value_short = 0x2, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 55, + .hw_value = 0x4, + .hw_value_short = 0x4, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 110, + .hw_value = 0x20, + .hw_value_short = 0x20, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 60, + .hw_value = 0x8, + .hw_value_short = 0x8, }, + { .bitrate = 90, + .hw_value = 0x10, + .hw_value_short = 0x10, }, + { .bitrate = 120, + .hw_value = 0x40, + .hw_value_short = 0x40, }, + { .bitrate = 180, + .hw_value = 0x80, + .hw_value_short = 0x80, }, + { .bitrate = 240, + .hw_value = 0x200, + .hw_value_short = 0x200, }, + { .bitrate = 360, + .hw_value = 0x400, + .hw_value_short = 0x400, }, + { .bitrate = 480, + .hw_value = 0x800, + .hw_value_short = 0x800, }, + { .bitrate = 540, + .hw_value = 0x1000, + .hw_value_short = 0x1000, }, +}; + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_channel wl1251_channels[] = { + { .hw_value = 1, .center_freq = 2412}, + { .hw_value = 2, .center_freq = 2417}, + { .hw_value = 3, .center_freq = 2422}, + { .hw_value = 4, .center_freq = 2427}, + { .hw_value = 5, .center_freq = 2432}, + { .hw_value = 6, .center_freq = 2437}, + { .hw_value = 7, .center_freq = 2442}, + { .hw_value = 8, .center_freq = 2447}, + { .hw_value = 9, .center_freq = 2452}, + { .hw_value = 10, .center_freq = 2457}, + { .hw_value = 11, .center_freq = 2462}, + { .hw_value = 12, .center_freq = 2467}, + { .hw_value = 13, .center_freq = 2472}, +}; + +static int wl1251_op_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + enum wl1251_acx_ps_scheme ps_scheme; + struct wl1251 *wl = hw->priv; + int ret; + + mutex_lock(&wl->mutex); + + wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); + + ret = wl1251_ps_elp_wakeup(wl); + if (ret < 0) + goto out; + + /* mac80211 uses units of 32 usec */ + ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue), + params->cw_min, params->cw_max, + params->aifs, params->txop * 32); + if (ret < 0) + goto out_sleep; + + if (params->uapsd) + ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER; + else + ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY; + + ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue), + CHANNEL_TYPE_EDCF, + wl1251_tx_get_queue(queue), ps_scheme, + WL1251_ACX_ACK_POLICY_LEGACY); + if (ret < 0) + goto out_sleep; + +out_sleep: + wl1251_ps_elp_sleep(wl); + +out: + mutex_unlock(&wl->mutex); + + return ret; +} + +static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx, + struct survey_info *survey) +{ + struct wl1251 *wl = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + + if (idx != 0) + return -ENOENT; + + survey->channel = conf->channel; + survey->filled = SURVEY_INFO_NOISE_DBM; + survey->noise = wl->noise; + + return 0; +} + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_supported_band wl1251_band_2ghz = { + .channels = wl1251_channels, + .n_channels = ARRAY_SIZE(wl1251_channels), + .bitrates = wl1251_rates, + .n_bitrates = ARRAY_SIZE(wl1251_rates), +}; + +static const struct ieee80211_ops wl1251_ops = { + .start = wl1251_op_start, + .stop = wl1251_op_stop, + .add_interface = wl1251_op_add_interface, + .remove_interface = wl1251_op_remove_interface, + .config = wl1251_op_config, + .configure_filter = wl1251_op_configure_filter, + .tx = wl1251_op_tx, + .set_key = wl1251_op_set_key, + .hw_scan = wl1251_op_hw_scan, + .bss_info_changed = wl1251_op_bss_info_changed, + .set_rts_threshold = wl1251_op_set_rts_threshold, + .conf_tx = wl1251_op_conf_tx, + .get_survey = wl1251_op_get_survey, +}; + +static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data) +{ + unsigned long timeout; + + wl1251_reg_write32(wl, EE_ADDR, offset); + wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ); + + /* EE_CTL_READ clears when data is ready */ + timeout = jiffies + msecs_to_jiffies(100); + while (1) { + if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ)) + break; + + if (time_after(jiffies, timeout)) + return -ETIMEDOUT; + + msleep(1); + } + + *data = wl1251_reg_read32(wl, EE_DATA); + return 0; +} + +static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset, + u8 *data, size_t len) +{ + size_t i; + int ret; + + wl1251_reg_write32(wl, EE_START, 0); + + for (i = 0; i < len; i++) { + ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]); + if (ret < 0) + return ret; + } + + return 0; +} + +static int wl1251_read_eeprom_mac(struct wl1251 *wl) +{ + u8 mac[ETH_ALEN]; + int i, ret; + + wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE); + + ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac)); + if (ret < 0) { + wl1251_warning("failed to read MAC address from EEPROM"); + return ret; + } + + /* MAC is stored in reverse order */ + for (i = 0; i < ETH_ALEN; i++) + wl->mac_addr[i] = mac[ETH_ALEN - i - 1]; + + return 0; +} + +static int wl1251_register_hw(struct wl1251 *wl) +{ + int ret; + + if (wl->mac80211_registered) + return 0; + + SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); + + ret = ieee80211_register_hw(wl->hw); + if (ret < 0) { + wl1251_error("unable to register mac80211 hw: %d", ret); + return ret; + } + + wl->mac80211_registered = true; + + wl1251_notice("loaded"); + + return 0; +} + +int wl1251_init_ieee80211(struct wl1251 *wl) +{ + int ret; + + /* The tx descriptor buffer and the TKIP space */ + wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc) + + WL1251_TKIP_IV_SPACE; + + /* unit us */ + /* FIXME: find a proper value */ + wl->hw->channel_change_time = 10000; + + wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_SUPPORTS_UAPSD; + + wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC); + wl->hw->wiphy->max_scan_ssids = 1; + wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz; + + wl->hw->queues = 4; + + if (wl->use_eeprom) + wl1251_read_eeprom_mac(wl); + + ret = wl1251_register_hw(wl); + if (ret) + goto out; + + wl1251_debugfs_init(wl); + wl1251_notice("initialized"); + + ret = 0; + +out: + return ret; +} +EXPORT_SYMBOL_GPL(wl1251_init_ieee80211); + +struct ieee80211_hw *wl1251_alloc_hw(void) +{ + struct ieee80211_hw *hw; + struct wl1251 *wl; + int i; + static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; + + hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops); + if (!hw) { + wl1251_error("could not alloc ieee80211_hw"); + return ERR_PTR(-ENOMEM); + } + + wl = hw->priv; + memset(wl, 0, sizeof(*wl)); + + wl->hw = hw; + + wl->data_in_count = 0; + + skb_queue_head_init(&wl->tx_queue); + + INIT_WORK(&wl->filter_work, wl1251_filter_work); + INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work); + wl->channel = WL1251_DEFAULT_CHANNEL; + wl->scanning = false; + wl->default_key = 0; + wl->listen_int = 1; + wl->rx_counter = 0; + wl->rx_handled = 0; + wl->rx_current_buffer = 0; + wl->rx_last_id = 0; + wl->rx_config = WL1251_DEFAULT_RX_CONFIG; + wl->rx_filter = WL1251_DEFAULT_RX_FILTER; + wl->elp = false; + wl->station_mode = STATION_ACTIVE_MODE; + wl->psm_requested = false; + wl->tx_queue_stopped = false; + wl->power_level = WL1251_DEFAULT_POWER_LEVEL; + wl->rssi_thold = 0; + wl->beacon_int = WL1251_DEFAULT_BEACON_INT; + wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD; + wl->vif = NULL; + + for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) + wl->tx_frames[i] = NULL; + + wl->next_tx_complete = 0; + + INIT_WORK(&wl->irq_work, wl1251_irq_work); + INIT_WORK(&wl->tx_work, wl1251_tx_work); + + /* + * In case our MAC address is not correctly set, + * we use a random but Nokia MAC. + */ + memcpy(wl->mac_addr, nokia_oui, 3); + get_random_bytes(wl->mac_addr + 3, 3); + + wl->state = WL1251_STATE_OFF; + mutex_init(&wl->mutex); + + wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE; + wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE; + + wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); + if (!wl->rx_descriptor) { + wl1251_error("could not allocate memory for rx descriptor"); + ieee80211_free_hw(hw); + return ERR_PTR(-ENOMEM); + } + + return hw; +} +EXPORT_SYMBOL_GPL(wl1251_alloc_hw); + +int wl1251_free_hw(struct wl1251 *wl) +{ + ieee80211_unregister_hw(wl->hw); + + wl1251_debugfs_exit(wl); + + kfree(wl->target_mem_map); + kfree(wl->data_path); + vfree(wl->fw); + wl->fw = NULL; + kfree(wl->nvs); + wl->nvs = NULL; + + kfree(wl->rx_descriptor); + wl->rx_descriptor = NULL; + + ieee80211_free_hw(wl->hw); + + return 0; +} +EXPORT_SYMBOL_GPL(wl1251_free_hw); + +MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kalle Valo "); +MODULE_FIRMWARE(WL1251_FW_NAME); diff --cc drivers/net/wireless/ti/wl1251/sdio.c index f78694295c39,000000000000..1b851f650e07 mode 100644,000000..100644 --- a/drivers/net/wireless/ti/wl1251/sdio.c +++ b/drivers/net/wireless/ti/wl1251/sdio.c @@@ -1,374 -1,0 +1,374 @@@ +/* + * wl12xx SDIO routines + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + * Copyright (C) 2005 Texas Instruments Incorporated + * Copyright (C) 2008 Google Inc + * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com) + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "wl1251.h" + +#ifndef SDIO_VENDOR_ID_TI +#define SDIO_VENDOR_ID_TI 0x104c +#endif + +#ifndef SDIO_DEVICE_ID_TI_WL1251 +#define SDIO_DEVICE_ID_TI_WL1251 0x9066 +#endif + +struct wl1251_sdio { + struct sdio_func *func; + u32 elp_val; +}; + +static struct sdio_func *wl_to_func(struct wl1251 *wl) +{ + struct wl1251_sdio *wl_sdio = wl->if_priv; + return wl_sdio->func; +} + +static void wl1251_sdio_interrupt(struct sdio_func *func) +{ + struct wl1251 *wl = sdio_get_drvdata(func); + + wl1251_debug(DEBUG_IRQ, "IRQ"); + + /* FIXME should be synchronous for sdio */ + ieee80211_queue_work(wl->hw, &wl->irq_work); +} + +static const struct sdio_device_id wl1251_devices[] = { + { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) }, + {} +}; +MODULE_DEVICE_TABLE(sdio, wl1251_devices); + + +static void wl1251_sdio_read(struct wl1251 *wl, int addr, + void *buf, size_t len) +{ + int ret; + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + ret = sdio_memcpy_fromio(func, buf, addr, len); + if (ret) + wl1251_error("sdio read failed (%d)", ret); + sdio_release_host(func); +} + +static void wl1251_sdio_write(struct wl1251 *wl, int addr, + void *buf, size_t len) +{ + int ret; + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + ret = sdio_memcpy_toio(func, addr, buf, len); + if (ret) + wl1251_error("sdio write failed (%d)", ret); + sdio_release_host(func); +} + +static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val) +{ + int ret = 0; + struct wl1251_sdio *wl_sdio = wl->if_priv; + struct sdio_func *func = wl_sdio->func; + + /* + * The hardware only supports RAW (read after write) access for + * reading, regular sdio_readb won't work here (it interprets + * the unused bits of CMD52 as write data even if we send read + * request). + */ + sdio_claim_host(func); + *val = sdio_writeb_readb(func, wl_sdio->elp_val, addr, &ret); + sdio_release_host(func); + + if (ret) + wl1251_error("sdio_readb failed (%d)", ret); +} + +static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val) +{ + int ret = 0; + struct wl1251_sdio *wl_sdio = wl->if_priv; + struct sdio_func *func = wl_sdio->func; + + sdio_claim_host(func); + sdio_writeb(func, val, addr, &ret); + sdio_release_host(func); + + if (ret) + wl1251_error("sdio_writeb failed (%d)", ret); + else + wl_sdio->elp_val = val; +} + +static void wl1251_sdio_reset(struct wl1251 *wl) +{ +} + +static void wl1251_sdio_enable_irq(struct wl1251 *wl) +{ + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + sdio_claim_irq(func, wl1251_sdio_interrupt); + sdio_release_host(func); +} + +static void wl1251_sdio_disable_irq(struct wl1251 *wl) +{ + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + sdio_release_irq(func); + sdio_release_host(func); +} + +/* Interrupts when using dedicated WLAN_IRQ pin */ +static irqreturn_t wl1251_line_irq(int irq, void *cookie) +{ + struct wl1251 *wl = cookie; + + ieee80211_queue_work(wl->hw, &wl->irq_work); + + return IRQ_HANDLED; +} + +static void wl1251_enable_line_irq(struct wl1251 *wl) +{ + return enable_irq(wl->irq); +} + +static void wl1251_disable_line_irq(struct wl1251 *wl) +{ + return disable_irq(wl->irq); +} + +static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable) +{ + struct sdio_func *func = wl_to_func(wl); + int ret; + + if (enable) { + /* + * Power is controlled by runtime PM, but we still call board + * callback in case it wants to do any additional setup, + * for example enabling clock buffer for the module. + */ + if (wl->set_power) + wl->set_power(true); + + ret = pm_runtime_get_sync(&func->dev); + if (ret < 0) + goto out; + + sdio_claim_host(func); + sdio_enable_func(func); + sdio_release_host(func); + } else { + sdio_claim_host(func); + sdio_disable_func(func); + sdio_release_host(func); + + ret = pm_runtime_put_sync(&func->dev); + if (ret < 0) + goto out; + + if (wl->set_power) + wl->set_power(false); + } + +out: + return ret; +} + +static struct wl1251_if_operations wl1251_sdio_ops = { + .read = wl1251_sdio_read, + .write = wl1251_sdio_write, + .write_elp = wl1251_sdio_write_elp, + .read_elp = wl1251_sdio_read_elp, + .reset = wl1251_sdio_reset, + .power = wl1251_sdio_set_power, +}; + +static int wl1251_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + int ret; + struct wl1251 *wl; + struct ieee80211_hw *hw; + struct wl1251_sdio *wl_sdio; + const struct wl12xx_platform_data *wl12xx_board_data; + + hw = wl1251_alloc_hw(); + if (IS_ERR(hw)) + return PTR_ERR(hw); + + wl = hw->priv; + + wl_sdio = kzalloc(sizeof(*wl_sdio), GFP_KERNEL); + if (wl_sdio == NULL) { + ret = -ENOMEM; + goto out_free_hw; + } + + sdio_claim_host(func); + ret = sdio_enable_func(func); + if (ret) + goto release; + + sdio_set_block_size(func, 512); + sdio_release_host(func); + + SET_IEEE80211_DEV(hw, &func->dev); + wl_sdio->func = func; + wl->if_priv = wl_sdio; + wl->if_ops = &wl1251_sdio_ops; + + wl12xx_board_data = wl12xx_get_platform_data(); + if (!IS_ERR(wl12xx_board_data)) { + wl->set_power = wl12xx_board_data->set_power; + wl->irq = wl12xx_board_data->irq; + wl->use_eeprom = wl12xx_board_data->use_eeprom; + } + + if (wl->irq) { + ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl); + if (ret < 0) { + wl1251_error("request_irq() failed: %d", ret); + goto disable; + } + + irq_set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); + disable_irq(wl->irq); + + wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq; + wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq; + + wl1251_info("using dedicated interrupt line"); + } else { + wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq; + wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq; + + wl1251_info("using SDIO interrupt"); + } + + ret = wl1251_init_ieee80211(wl); + if (ret) + goto out_free_irq; + + sdio_set_drvdata(func, wl); + + /* Tell PM core that we don't need the card to be powered now */ + pm_runtime_put_noidle(&func->dev); + + return ret; + +out_free_irq: + if (wl->irq) + free_irq(wl->irq, wl); +disable: + sdio_claim_host(func); + sdio_disable_func(func); +release: + sdio_release_host(func); + kfree(wl_sdio); +out_free_hw: + wl1251_free_hw(wl); + return ret; +} + +static void __devexit wl1251_sdio_remove(struct sdio_func *func) +{ + struct wl1251 *wl = sdio_get_drvdata(func); + struct wl1251_sdio *wl_sdio = wl->if_priv; + + /* Undo decrement done above in wl1251_probe */ + pm_runtime_get_noresume(&func->dev); + + if (wl->irq) + free_irq(wl->irq, wl); - kfree(wl_sdio); + wl1251_free_hw(wl); ++ kfree(wl_sdio); + + sdio_claim_host(func); + sdio_release_irq(func); + sdio_disable_func(func); + sdio_release_host(func); +} + +static int wl1251_suspend(struct device *dev) +{ + /* + * Tell MMC/SDIO core it's OK to power down the card + * (if it isn't already), but not to remove it completely. + */ + return 0; +} + +static int wl1251_resume(struct device *dev) +{ + return 0; +} + +static const struct dev_pm_ops wl1251_sdio_pm_ops = { + .suspend = wl1251_suspend, + .resume = wl1251_resume, +}; + +static struct sdio_driver wl1251_sdio_driver = { + .name = "wl1251_sdio", + .id_table = wl1251_devices, + .probe = wl1251_sdio_probe, + .remove = __devexit_p(wl1251_sdio_remove), + .drv.pm = &wl1251_sdio_pm_ops, +}; + +static int __init wl1251_sdio_init(void) +{ + int err; + + err = sdio_register_driver(&wl1251_sdio_driver); + if (err) + wl1251_error("failed to register sdio driver: %d", err); + return err; +} + +static void __exit wl1251_sdio_exit(void) +{ + sdio_unregister_driver(&wl1251_sdio_driver); + wl1251_notice("unloaded"); +} + +module_init(wl1251_sdio_init); +module_exit(wl1251_sdio_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kalle Valo ");