/* * Copyright (c) 2011 Atheros Communications Inc. * * 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 #include #include #include "core.h" #include "cfg80211.h" #include "target.h" #include "debug.h" #include "hif-ops.h" unsigned int debug_mask; static unsigned int testmode; module_param(debug_mask, uint, 0644); module_param(testmode, uint, 0644); /* * Include definitions here that can be used to tune the WLAN module * behavior. Different customers can tune the behavior as per their needs, * here. */ /* * This configuration item enable/disable keepalive support. * Keepalive support: In the absence of any data traffic to AP, null * frames will be sent to the AP at periodic interval, to keep the association * active. This configuration item defines the periodic interval. * Use value of zero to disable keepalive support * Default: 60 seconds */ #define WLAN_CONFIG_KEEP_ALIVE_INTERVAL 60 /* * This configuration item sets the value of disconnect timeout * Firmware delays sending the disconnec event to the host for this * timeout after is gets disconnected from the current AP. * If the firmware successly roams within the disconnect timeout * it sends a new connect event */ #define WLAN_CONFIG_DISCONNECT_TIMEOUT 10 #define CONFIG_AR600x_DEBUG_UART_TX_PIN 8 #define ATH6KL_DATA_OFFSET 64 struct sk_buff *ath6kl_buf_alloc(int size) { struct sk_buff *skb; u16 reserved; /* Add chacheline space at front and back of buffer */ reserved = (2 * L1_CACHE_BYTES) + ATH6KL_DATA_OFFSET + sizeof(struct htc_packet) + ATH6KL_HTC_ALIGN_BYTES; skb = dev_alloc_skb(size + reserved); if (skb) skb_reserve(skb, reserved - L1_CACHE_BYTES); return skb; } void ath6kl_init_profile_info(struct ath6kl_vif *vif) { vif->ssid_len = 0; memset(vif->ssid, 0, sizeof(vif->ssid)); vif->dot11_auth_mode = OPEN_AUTH; vif->auth_mode = NONE_AUTH; vif->prwise_crypto = NONE_CRYPT; vif->prwise_crypto_len = 0; vif->grp_crypto = NONE_CRYPT; vif->grp_crypto_len = 0; memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); memset(vif->req_bssid, 0, sizeof(vif->req_bssid)); memset(vif->bssid, 0, sizeof(vif->bssid)); vif->bss_ch = 0; vif->nw_type = vif->next_mode = INFRA_NETWORK; } static int ath6kl_set_host_app_area(struct ath6kl *ar) { u32 address, data; struct host_app_area host_app_area; /* Fetch the address of the host_app_area_s * instance in the host interest area */ address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest)); address = TARG_VTOP(ar->target_type, address); if (ath6kl_diag_read32(ar, address, &data)) return -EIO; address = TARG_VTOP(ar->target_type, data); host_app_area.wmi_protocol_ver = cpu_to_le32(WMI_PROTOCOL_VERSION); if (ath6kl_diag_write(ar, address, (u8 *) &host_app_area, sizeof(struct host_app_area))) return -EIO; return 0; } static inline void set_ac2_ep_map(struct ath6kl *ar, u8 ac, enum htc_endpoint_id ep) { ar->ac2ep_map[ac] = ep; ar->ep2ac_map[ep] = ac; } /* connect to a service */ static int ath6kl_connectservice(struct ath6kl *ar, struct htc_service_connect_req *con_req, char *desc) { int status; struct htc_service_connect_resp response; memset(&response, 0, sizeof(response)); status = ath6kl_htc_conn_service(ar->htc_target, con_req, &response); if (status) { ath6kl_err("failed to connect to %s service status:%d\n", desc, status); return status; } switch (con_req->svc_id) { case WMI_CONTROL_SVC: if (test_bit(WMI_ENABLED, &ar->flag)) ath6kl_wmi_set_control_ep(ar->wmi, response.endpoint); ar->ctrl_ep = response.endpoint; break; case WMI_DATA_BE_SVC: set_ac2_ep_map(ar, WMM_AC_BE, response.endpoint); break; case WMI_DATA_BK_SVC: set_ac2_ep_map(ar, WMM_AC_BK, response.endpoint); break; case WMI_DATA_VI_SVC: set_ac2_ep_map(ar, WMM_AC_VI, response.endpoint); break; case WMI_DATA_VO_SVC: set_ac2_ep_map(ar, WMM_AC_VO, response.endpoint); break; default: ath6kl_err("service id is not mapped %d\n", con_req->svc_id); return -EINVAL; } return 0; } static int ath6kl_init_service_ep(struct ath6kl *ar) { struct htc_service_connect_req connect; memset(&connect, 0, sizeof(connect)); /* these fields are the same for all service endpoints */ connect.ep_cb.rx = ath6kl_rx; connect.ep_cb.rx_refill = ath6kl_rx_refill; connect.ep_cb.tx_full = ath6kl_tx_queue_full; /* * Set the max queue depth so that our ath6kl_tx_queue_full handler * gets called. */ connect.max_txq_depth = MAX_DEFAULT_SEND_QUEUE_DEPTH; connect.ep_cb.rx_refill_thresh = ATH6KL_MAX_RX_BUFFERS / 4; if (!connect.ep_cb.rx_refill_thresh) connect.ep_cb.rx_refill_thresh++; /* connect to control service */ connect.svc_id = WMI_CONTROL_SVC; if (ath6kl_connectservice(ar, &connect, "WMI CONTROL")) return -EIO; connect.flags |= HTC_FLGS_TX_BNDL_PAD_EN; /* * Limit the HTC message size on the send path, although e can * receive A-MSDU frames of 4K, we will only send ethernet-sized * (802.3) frames on the send path. */ connect.max_rxmsg_sz = WMI_MAX_TX_DATA_FRAME_LENGTH; /* * To reduce the amount of committed memory for larger A_MSDU * frames, use the recv-alloc threshold mechanism for larger * packets. */ connect.ep_cb.rx_alloc_thresh = ATH6KL_BUFFER_SIZE; connect.ep_cb.rx_allocthresh = ath6kl_alloc_amsdu_rxbuf; /* * For the remaining data services set the connection flag to * reduce dribbling, if configured to do so. */ connect.conn_flags |= HTC_CONN_FLGS_REDUCE_CRED_DRIB; connect.conn_flags &= ~HTC_CONN_FLGS_THRESH_MASK; connect.conn_flags |= HTC_CONN_FLGS_THRESH_LVL_HALF; connect.svc_id = WMI_DATA_BE_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA BE")) return -EIO; /* connect to back-ground map this to WMI LOW_PRI */ connect.svc_id = WMI_DATA_BK_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA BK")) return -EIO; /* connect to Video service, map this to to HI PRI */ connect.svc_id = WMI_DATA_VI_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA VI")) return -EIO; /* * Connect to VO service, this is currently not mapped to a WMI * priority stream due to historical reasons. WMI originally * defined 3 priorities over 3 mailboxes We can change this when * WMI is reworked so that priorities are not dependent on * mailboxes. */ connect.svc_id = WMI_DATA_VO_SVC; if (ath6kl_connectservice(ar, &connect, "WMI DATA VO")) return -EIO; return 0; } void ath6kl_init_control_info(struct ath6kl_vif *vif) { ath6kl_init_profile_info(vif); vif->def_txkey_index = 0; memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); vif->ch_hint = 0; } /* * Set HTC/Mbox operational parameters, this can only be called when the * target is in the BMI phase. */ static int ath6kl_set_htc_params(struct ath6kl *ar, u32 mbox_isr_yield_val, u8 htc_ctrl_buf) { int status; u32 blk_size; blk_size = ar->mbox_info.block_size; if (htc_ctrl_buf) blk_size |= ((u32)htc_ctrl_buf) << 16; /* set the host interest area for the block size */ status = ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz)), (u8 *)&blk_size, 4); if (status) { ath6kl_err("bmi_write_memory for IO block size failed\n"); goto out; } ath6kl_dbg(ATH6KL_DBG_TRC, "block size set: %d (target addr:0x%X)\n", blk_size, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_io_block_sz))); if (mbox_isr_yield_val) { /* set the host interest area for the mbox ISR yield limit */ status = ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_mbox_isr_yield_limit)), (u8 *)&mbox_isr_yield_val, 4); if (status) { ath6kl_err("bmi_write_memory for yield limit failed\n"); goto out; } } out: return status; } #define REG_DUMP_COUNT_AR6003 60 #define REGISTER_DUMP_LEN_MAX 60 static void ath6kl_dump_target_assert_info(struct ath6kl *ar) { u32 address; u32 regdump_loc = 0; int status; u32 regdump_val[REGISTER_DUMP_LEN_MAX]; u32 i; if (ar->target_type != TARGET_TYPE_AR6003) return; /* the reg dump pointer is copied to the host interest area */ address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state)); address = TARG_VTOP(ar->target_type, address); /* read RAM location through diagnostic window */ status = ath6kl_diag_read32(ar, address, ®dump_loc); if (status || !regdump_loc) { ath6kl_err("failed to get ptr to register dump area\n"); return; } ath6kl_dbg(ATH6KL_DBG_TRC, "location of register dump data: 0x%X\n", regdump_loc); regdump_loc = TARG_VTOP(ar->target_type, regdump_loc); /* fetch register dump data */ status = ath6kl_diag_read(ar, regdump_loc, (u8 *)®dump_val[0], REG_DUMP_COUNT_AR6003 * (sizeof(u32))); if (status) { ath6kl_err("failed to get register dump\n"); return; } ath6kl_dbg(ATH6KL_DBG_TRC, "Register Dump:\n"); for (i = 0; i < REG_DUMP_COUNT_AR6003; i++) ath6kl_dbg(ATH6KL_DBG_TRC, " %d : 0x%8.8X\n", i, regdump_val[i]); } void ath6kl_target_failure(struct ath6kl *ar) { ath6kl_err("target asserted\n"); /* try dumping target assertion information (if any) */ ath6kl_dump_target_assert_info(ar); } static int ath6kl_target_config_wlan_params(struct ath6kl *ar) { int status = 0; int ret; /* * Configure the device for rx dot11 header rules. "0,0" are the * default values. Required if checksum offload is needed. Set * RxMetaVersion to 2. */ if (ath6kl_wmi_set_rx_frame_format_cmd(ar->wmi, ar->rx_meta_ver, 0, 0)) { ath6kl_err("unable to set the rx frame format\n"); status = -EIO; } if (ar->conf_flags & ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN) if ((ath6kl_wmi_pmparams_cmd(ar->wmi, 0, 1, 0, 0, 1, IGNORE_POWER_SAVE_FAIL_EVENT_DURING_SCAN)) != 0) { ath6kl_err("unable to set power save fail event policy\n"); status = -EIO; } if (!(ar->conf_flags & ATH6KL_CONF_IGNORE_ERP_BARKER)) if ((ath6kl_wmi_set_lpreamble_cmd(ar->wmi, 0, WMI_DONOT_IGNORE_BARKER_IN_ERP)) != 0) { ath6kl_err("unable to set barker preamble policy\n"); status = -EIO; } if (ath6kl_wmi_set_keepalive_cmd(ar->wmi, WLAN_CONFIG_KEEP_ALIVE_INTERVAL)) { ath6kl_err("unable to set keep alive interval\n"); status = -EIO; } if (ath6kl_wmi_disctimeout_cmd(ar->wmi, WLAN_CONFIG_DISCONNECT_TIMEOUT)) { ath6kl_err("unable to set disconnect timeout\n"); status = -EIO; } if (!(ar->conf_flags & ATH6KL_CONF_ENABLE_TX_BURST)) if (ath6kl_wmi_set_wmm_txop(ar->wmi, WMI_TXOP_DISABLED)) { ath6kl_err("unable to set txop bursting\n"); status = -EIO; } if (ar->p2p) { ret = ath6kl_wmi_info_req_cmd(ar->wmi, P2P_FLAG_CAPABILITIES_REQ | P2P_FLAG_MACADDR_REQ | P2P_FLAG_HMODEL_REQ); if (ret) { ath6kl_dbg(ATH6KL_DBG_TRC, "failed to request P2P " "capabilities (%d) - assuming P2P not " "supported\n", ret); ar->p2p = 0; } } if (ar->p2p) { /* Enable Probe Request reporting for P2P */ ret = ath6kl_wmi_probe_report_req_cmd(ar->wmi, true); if (ret) { ath6kl_dbg(ATH6KL_DBG_TRC, "failed to enable Probe " "Request reporting (%d)\n", ret); } } return status; } int ath6kl_configure_target(struct ath6kl *ar) { u32 param, ram_reserved_size; u8 fw_iftype, fw_mode = 0, fw_submode; int i; /* * Note: Even though the firmware interface type is * chosen as BSS_STA for all three interfaces, can * be configured to IBSS/AP as long as the fw submode * remains normal mode (0 - AP, STA and IBSS). But * due to an target assert in firmware only one interface is * configured for now. */ fw_iftype = HI_OPTION_FW_MODE_BSS_STA; for (i = 0; i < MAX_NUM_VIF; i++) fw_mode |= fw_iftype << (i * HI_OPTION_FW_MODE_BITS); /* * submodes : vif[0] - AP/STA/IBSS * vif[1] - "P2P dev"/"P2P GO"/"P2P Client" * vif[2] - "P2P dev"/"P2P GO"/"P2P Client" */ fw_submode = HI_OPTION_FW_SUBMODE_NONE | (HI_OPTION_FW_SUBMODE_P2PDEV << (1 * HI_OPTION_FW_SUBMODE_BITS)) | (HI_OPTION_FW_SUBMODE_P2PDEV << (2 * HI_OPTION_FW_SUBMODE_BITS)); /* * FIXME: This needs to be removed once the multivif * support is enabled. */ if (ar->p2p) fw_submode = HI_OPTION_FW_SUBMODE_P2PDEV; else fw_submode = HI_OPTION_FW_SUBMODE_NONE; param = HTC_PROTOCOL_VERSION; if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_host_interest)), (u8 *)¶m, 4) != 0) { ath6kl_err("bmi_write_memory for htc version failed\n"); return -EIO; } /* set the firmware mode to STA/IBSS/AP */ param = 0; if (ath6kl_bmi_read(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_option_flag)), (u8 *)¶m, 4) != 0) { ath6kl_err("bmi_read_memory for setting fwmode failed\n"); return -EIO; } param |= (MAX_NUM_VIF << HI_OPTION_NUM_DEV_SHIFT); param |= fw_mode << HI_OPTION_FW_MODE_SHIFT; param |= fw_submode << HI_OPTION_FW_SUBMODE_SHIFT; param |= (0 << HI_OPTION_MAC_ADDR_METHOD_SHIFT); param |= (0 << HI_OPTION_FW_BRIDGE_SHIFT); if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_option_flag)), (u8 *)¶m, 4) != 0) { ath6kl_err("bmi_write_memory for setting fwmode failed\n"); return -EIO; } ath6kl_dbg(ATH6KL_DBG_TRC, "firmware mode set\n"); /* * Hardcode the address use for the extended board data * Ideally this should be pre-allocate by the OS at boot time * But since it is a new feature and board data is loaded * at init time, we have to workaround this from host. * It is difficult to patch the firmware boot code, * but possible in theory. */ param = ar->hw.board_ext_data_addr; ram_reserved_size = ar->hw.reserved_ram_size; if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_ext_data)), (u8 *)¶m, 4) != 0) { ath6kl_err("bmi_write_memory for hi_board_ext_data failed\n"); return -EIO; } if (ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_end_ram_reserve_sz)), (u8 *)&ram_reserved_size, 4) != 0) { ath6kl_err("bmi_write_memory for hi_end_ram_reserve_sz failed\n"); return -EIO; } /* set the block size for the target */ if (ath6kl_set_htc_params(ar, MBOX_YIELD_LIMIT, 0)) /* use default number of control buffers */ return -EIO; return 0; } void ath6kl_core_free(struct ath6kl *ar) { wiphy_free(ar->wiphy); } void ath6kl_core_cleanup(struct ath6kl *ar) { destroy_workqueue(ar->ath6kl_wq); if (ar->htc_target) ath6kl_htc_cleanup(ar->htc_target); ath6kl_cookie_cleanup(ar); ath6kl_cleanup_amsdu_rxbufs(ar); ath6kl_bmi_cleanup(ar); ath6kl_debug_cleanup(ar); kfree(ar->fw_board); kfree(ar->fw_otp); kfree(ar->fw); kfree(ar->fw_patch); ath6kl_deinit_ieee80211_hw(ar); } /* firmware upload */ static int ath6kl_get_fw(struct ath6kl *ar, const char *filename, u8 **fw, size_t *fw_len) { const struct firmware *fw_entry; int ret; ret = request_firmware(&fw_entry, filename, ar->dev); if (ret) return ret; *fw_len = fw_entry->size; *fw = kmemdup(fw_entry->data, fw_entry->size, GFP_KERNEL); if (*fw == NULL) ret = -ENOMEM; release_firmware(fw_entry); return ret; } #ifdef CONFIG_OF static const char *get_target_ver_dir(const struct ath6kl *ar) { switch (ar->version.target_ver) { case AR6003_REV1_VERSION: return "ath6k/AR6003/hw1.0"; case AR6003_REV2_VERSION: return "ath6k/AR6003/hw2.0"; case AR6003_REV3_VERSION: return "ath6k/AR6003/hw2.1.1"; } ath6kl_warn("%s: unsupported target version 0x%x.\n", __func__, ar->version.target_ver); return NULL; } /* * Check the device tree for a board-id and use it to construct * the pathname to the firmware file. Used (for now) to find a * fallback to the "bdata.bin" file--typically a symlink to the * appropriate board-specific file. */ static bool check_device_tree(struct ath6kl *ar) { static const char *board_id_prop = "atheros,board-id"; struct device_node *node; char board_filename[64]; const char *board_id; int ret; for_each_compatible_node(node, NULL, "atheros,ath6kl") { board_id = of_get_property(node, board_id_prop, NULL); if (board_id == NULL) { ath6kl_warn("No \"%s\" property on %s node.\n", board_id_prop, node->name); continue; } snprintf(board_filename, sizeof(board_filename), "%s/bdata.%s.bin", get_target_ver_dir(ar), board_id); ret = ath6kl_get_fw(ar, board_filename, &ar->fw_board, &ar->fw_board_len); if (ret) { ath6kl_err("Failed to get DT board file %s: %d\n", board_filename, ret); continue; } return true; } return false; } #else static bool check_device_tree(struct ath6kl *ar) { return false; } #endif /* CONFIG_OF */ static int ath6kl_fetch_board_file(struct ath6kl *ar) { const char *filename; int ret; if (ar->fw_board != NULL) return 0; switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_BOARD_DATA_FILE; break; case AR6004_REV1_VERSION: filename = AR6004_REV1_BOARD_DATA_FILE; break; default: filename = AR6003_REV3_BOARD_DATA_FILE; break; } ret = ath6kl_get_fw(ar, filename, &ar->fw_board, &ar->fw_board_len); if (ret == 0) { /* managed to get proper board file */ return 0; } if (check_device_tree(ar)) { /* got board file from device tree */ return 0; } /* there was no proper board file, try to use default instead */ ath6kl_warn("Failed to get board file %s (%d), trying to find default board file.\n", filename, ret); switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_DEFAULT_BOARD_DATA_FILE; break; case AR6004_REV1_VERSION: filename = AR6004_REV1_DEFAULT_BOARD_DATA_FILE; break; default: filename = AR6003_REV3_DEFAULT_BOARD_DATA_FILE; break; } ret = ath6kl_get_fw(ar, filename, &ar->fw_board, &ar->fw_board_len); if (ret) { ath6kl_err("Failed to get default board file %s: %d\n", filename, ret); return ret; } ath6kl_warn("WARNING! No proper board file was not found, instead using a default board file.\n"); ath6kl_warn("Most likely your hardware won't work as specified. Install correct board file!\n"); return 0; } static int ath6kl_fetch_otp_file(struct ath6kl *ar) { const char *filename; int ret; if (ar->fw_otp != NULL) return 0; switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_OTP_FILE; break; case AR6004_REV1_VERSION: ath6kl_dbg(ATH6KL_DBG_TRC, "AR6004 doesn't need OTP file\n"); return 0; break; default: filename = AR6003_REV3_OTP_FILE; break; } ret = ath6kl_get_fw(ar, filename, &ar->fw_otp, &ar->fw_otp_len); if (ret) { ath6kl_err("Failed to get OTP file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_fw_file(struct ath6kl *ar) { const char *filename; int ret; if (ar->fw != NULL) return 0; if (testmode) { switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_TCMD_FIRMWARE_FILE; break; case AR6003_REV3_VERSION: filename = AR6003_REV3_TCMD_FIRMWARE_FILE; break; case AR6004_REV1_VERSION: ath6kl_warn("testmode not supported with ar6004\n"); return -EOPNOTSUPP; default: ath6kl_warn("unknown target version: 0x%x\n", ar->version.target_ver); return -EINVAL; } set_bit(TESTMODE, &ar->flag); goto get_fw; } switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_FIRMWARE_FILE; break; case AR6004_REV1_VERSION: filename = AR6004_REV1_FIRMWARE_FILE; break; default: filename = AR6003_REV3_FIRMWARE_FILE; break; } get_fw: ret = ath6kl_get_fw(ar, filename, &ar->fw, &ar->fw_len); if (ret) { ath6kl_err("Failed to get firmware file %s: %d\n", filename, ret); return ret; } return 0; } static int ath6kl_fetch_patch_file(struct ath6kl *ar) { const char *filename; int ret; switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_PATCH_FILE; break; case AR6004_REV1_VERSION: /* FIXME: implement for AR6004 */ return 0; break; default: filename = AR6003_REV3_PATCH_FILE; break; } if (ar->fw_patch == NULL) { ret = ath6kl_get_fw(ar, filename, &ar->fw_patch, &ar->fw_patch_len); if (ret) { ath6kl_err("Failed to get patch file %s: %d\n", filename, ret); return ret; } } return 0; } static int ath6kl_fetch_fw_api1(struct ath6kl *ar) { int ret; ret = ath6kl_fetch_otp_file(ar); if (ret) return ret; ret = ath6kl_fetch_fw_file(ar); if (ret) return ret; ret = ath6kl_fetch_patch_file(ar); if (ret) return ret; return 0; } static int ath6kl_fetch_fw_api2(struct ath6kl *ar) { size_t magic_len, len, ie_len; const struct firmware *fw; struct ath6kl_fw_ie *hdr; const char *filename; const u8 *data; int ret, ie_id, i, index, bit; __le32 *val; switch (ar->version.target_ver) { case AR6003_REV2_VERSION: filename = AR6003_REV2_FIRMWARE_2_FILE; break; case AR6003_REV3_VERSION: filename = AR6003_REV3_FIRMWARE_2_FILE; break; case AR6004_REV1_VERSION: filename = AR6004_REV1_FIRMWARE_2_FILE; break; default: return -EOPNOTSUPP; } ret = request_firmware(&fw, filename, ar->dev); if (ret) return ret; data = fw->data; len = fw->size; /* magic also includes the null byte, check that as well */ magic_len = strlen(ATH6KL_FIRMWARE_MAGIC) + 1; if (len < magic_len) { ret = -EINVAL; goto out; } if (memcmp(data, ATH6KL_FIRMWARE_MAGIC, magic_len) != 0) { ret = -EINVAL; goto out; } len -= magic_len; data += magic_len; /* loop elements */ while (len > sizeof(struct ath6kl_fw_ie)) { /* hdr is unaligned! */ hdr = (struct ath6kl_fw_ie *) data; ie_id = le32_to_cpup(&hdr->id); ie_len = le32_to_cpup(&hdr->len); len -= sizeof(*hdr); data += sizeof(*hdr); if (len < ie_len) { ret = -EINVAL; goto out; } switch (ie_id) { case ATH6KL_FW_IE_OTP_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found otp image ie (%zd B)\n", ie_len); ar->fw_otp = kmemdup(data, ie_len, GFP_KERNEL); if (ar->fw_otp == NULL) { ret = -ENOMEM; goto out; } ar->fw_otp_len = ie_len; break; case ATH6KL_FW_IE_FW_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found fw image ie (%zd B)\n", ie_len); ar->fw = kmemdup(data, ie_len, GFP_KERNEL); if (ar->fw == NULL) { ret = -ENOMEM; goto out; } ar->fw_len = ie_len; break; case ATH6KL_FW_IE_PATCH_IMAGE: ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch image ie (%zd B)\n", ie_len); ar->fw_patch = kmemdup(data, ie_len, GFP_KERNEL); if (ar->fw_patch == NULL) { ret = -ENOMEM; goto out; } ar->fw_patch_len = ie_len; break; case ATH6KL_FW_IE_RESERVED_RAM_SIZE: val = (__le32 *) data; ar->hw.reserved_ram_size = le32_to_cpup(val); ath6kl_dbg(ATH6KL_DBG_BOOT, "found reserved ram size ie 0x%d\n", ar->hw.reserved_ram_size); break; case ATH6KL_FW_IE_CAPABILITIES: ath6kl_dbg(ATH6KL_DBG_BOOT, "found firmware capabilities ie (%zd B)\n", ie_len); for (i = 0; i < ATH6KL_FW_CAPABILITY_MAX; i++) { index = ALIGN(i, 8) / 8; bit = i % 8; if (data[index] & (1 << bit)) __set_bit(i, ar->fw_capabilities); } ath6kl_dbg_dump(ATH6KL_DBG_BOOT, "capabilities", "", ar->fw_capabilities, sizeof(ar->fw_capabilities)); break; case ATH6KL_FW_IE_PATCH_ADDR: if (ie_len != sizeof(*val)) break; val = (__le32 *) data; ar->hw.dataset_patch_addr = le32_to_cpup(val); ath6kl_dbg(ATH6KL_DBG_BOOT, "found patch address ie 0x%d\n", ar->hw.dataset_patch_addr); break; default: ath6kl_dbg(ATH6KL_DBG_BOOT, "Unknown fw ie: %u\n", le32_to_cpup(&hdr->id)); break; } len -= ie_len; data += ie_len; }; ret = 0; out: release_firmware(fw); return ret; } static int ath6kl_fetch_firmwares(struct ath6kl *ar) { int ret; ret = ath6kl_fetch_board_file(ar); if (ret) return ret; ret = ath6kl_fetch_fw_api2(ar); if (ret == 0) { ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 2\n"); return 0; } ret = ath6kl_fetch_fw_api1(ar); if (ret) return ret; ath6kl_dbg(ATH6KL_DBG_BOOT, "using fw api 1\n"); return 0; } static int ath6kl_upload_board_file(struct ath6kl *ar) { u32 board_address, board_ext_address, param; u32 board_data_size, board_ext_data_size; int ret; if (WARN_ON(ar->fw_board == NULL)) return -ENOENT; /* * Determine where in Target RAM to write Board Data. * For AR6004, host determine Target RAM address for * writing board data. */ if (ar->target_type == TARGET_TYPE_AR6004) { board_address = AR6004_REV1_BOARD_DATA_ADDRESS; ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_data)), (u8 *) &board_address, 4); } else { ath6kl_bmi_read(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_data)), (u8 *) &board_address, 4); } /* determine where in target ram to write extended board data */ ath6kl_bmi_read(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_ext_data)), (u8 *) &board_ext_address, 4); if (board_ext_address == 0) { ath6kl_err("Failed to get board file target address.\n"); return -EINVAL; } switch (ar->target_type) { case TARGET_TYPE_AR6003: board_data_size = AR6003_BOARD_DATA_SZ; board_ext_data_size = AR6003_BOARD_EXT_DATA_SZ; break; case TARGET_TYPE_AR6004: board_data_size = AR6004_BOARD_DATA_SZ; board_ext_data_size = AR6004_BOARD_EXT_DATA_SZ; break; default: WARN_ON(1); return -EINVAL; break; } if (ar->fw_board_len == (board_data_size + board_ext_data_size)) { /* write extended board data */ ath6kl_dbg(ATH6KL_DBG_BOOT, "writing extended board data to 0x%x (%d B)\n", board_ext_address, board_ext_data_size); ret = ath6kl_bmi_write(ar, board_ext_address, ar->fw_board + board_data_size, board_ext_data_size); if (ret) { ath6kl_err("Failed to write extended board data: %d\n", ret); return ret; } /* record that extended board data is initialized */ param = (board_ext_data_size << 16) | 1; ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_ext_data_config)), (unsigned char *) ¶m, 4); } if (ar->fw_board_len < board_data_size) { ath6kl_err("Too small board file: %zu\n", ar->fw_board_len); ret = -EINVAL; return ret; } ath6kl_dbg(ATH6KL_DBG_BOOT, "writing board file to 0x%x (%d B)\n", board_address, board_data_size); ret = ath6kl_bmi_write(ar, board_address, ar->fw_board, board_data_size); if (ret) { ath6kl_err("Board file bmi write failed: %d\n", ret); return ret; } /* record the fact that Board Data IS initialized */ param = 1; ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_board_data_initialized)), (u8 *)¶m, 4); return ret; } static int ath6kl_upload_otp(struct ath6kl *ar) { u32 address, param; bool from_hw = false; int ret; if (WARN_ON(ar->fw_otp == NULL)) return -ENOENT; address = ar->hw.app_load_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing otp to 0x%x (%zd B)\n", address, ar->fw_otp_len); ret = ath6kl_bmi_fast_download(ar, address, ar->fw_otp, ar->fw_otp_len); if (ret) { ath6kl_err("Failed to upload OTP file: %d\n", ret); return ret; } /* read firmware start address */ ret = ath6kl_bmi_read(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_app_start)), (u8 *) &address, sizeof(address)); if (ret) { ath6kl_err("Failed to read hi_app_start: %d\n", ret); return ret; } if (ar->hw.app_start_override_addr == 0) { ar->hw.app_start_override_addr = address; from_hw = true; } ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr%s 0x%x\n", from_hw ? " (from hw)" : "", ar->hw.app_start_override_addr); /* execute the OTP code */ ath6kl_dbg(ATH6KL_DBG_BOOT, "executing OTP at 0x%x\n", ar->hw.app_start_override_addr); param = 0; ath6kl_bmi_execute(ar, ar->hw.app_start_override_addr, ¶m); return ret; } static int ath6kl_upload_firmware(struct ath6kl *ar) { u32 address; int ret; if (WARN_ON(ar->fw == NULL)) return -ENOENT; address = ar->hw.app_load_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing firmware to 0x%x (%zd B)\n", address, ar->fw_len); ret = ath6kl_bmi_fast_download(ar, address, ar->fw, ar->fw_len); if (ret) { ath6kl_err("Failed to write firmware: %d\n", ret); return ret; } /* * Set starting address for firmware * Don't need to setup app_start override addr on AR6004 */ if (ar->target_type != TARGET_TYPE_AR6004) { address = ar->hw.app_start_override_addr; ath6kl_bmi_set_app_start(ar, address); } return ret; } static int ath6kl_upload_patch(struct ath6kl *ar) { u32 address, param; int ret; if (WARN_ON(ar->fw_patch == NULL)) return -ENOENT; address = ar->hw.dataset_patch_addr; ath6kl_dbg(ATH6KL_DBG_BOOT, "writing patch to 0x%x (%zd B)\n", address, ar->fw_patch_len); ret = ath6kl_bmi_write(ar, address, ar->fw_patch, ar->fw_patch_len); if (ret) { ath6kl_err("Failed to write patch file: %d\n", ret); return ret; } param = address; ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_dset_list_head)), (unsigned char *) ¶m, 4); return 0; } static int ath6kl_init_upload(struct ath6kl *ar) { u32 param, options, sleep, address; int status = 0; if (ar->target_type != TARGET_TYPE_AR6003 && ar->target_type != TARGET_TYPE_AR6004) return -EINVAL; /* temporarily disable system sleep */ address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; status = ath6kl_bmi_reg_read(ar, address, ¶m); if (status) return status; options = param; param |= ATH6KL_OPTION_SLEEP_DISABLE; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; status = ath6kl_bmi_reg_read(ar, address, ¶m); if (status) return status; sleep = param; param |= SM(SYSTEM_SLEEP_DISABLE, 1); status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; ath6kl_dbg(ATH6KL_DBG_TRC, "old options: %d, old sleep: %d\n", options, sleep); /* program analog PLL register */ /* no need to control 40/44MHz clock on AR6004 */ if (ar->target_type != TARGET_TYPE_AR6004) { status = ath6kl_bmi_reg_write(ar, ATH6KL_ANALOG_PLL_REGISTER, 0xF9104001); if (status) return status; /* Run at 80/88MHz by default */ param = SM(CPU_CLOCK_STANDARD, 1); address = RTC_BASE_ADDRESS + CPU_CLOCK_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; } param = 0; address = RTC_BASE_ADDRESS + LPO_CAL_ADDRESS; param = SM(LPO_CAL_ENABLE, 1); status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; /* WAR to avoid SDIO CRC err */ if (ar->version.target_ver == AR6003_REV2_VERSION) { ath6kl_err("temporary war to avoid sdio crc error\n"); param = 0x20; address = GPIO_BASE_ADDRESS + GPIO_PIN10_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN11_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN12_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; address = GPIO_BASE_ADDRESS + GPIO_PIN13_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; } /* write EEPROM data to Target RAM */ status = ath6kl_upload_board_file(ar); if (status) return status; /* transfer One time Programmable data */ status = ath6kl_upload_otp(ar); if (status) return status; /* Download Target firmware */ status = ath6kl_upload_firmware(ar); if (status) return status; status = ath6kl_upload_patch(ar); if (status) return status; /* Restore system sleep */ address = RTC_BASE_ADDRESS + SYSTEM_SLEEP_ADDRESS; status = ath6kl_bmi_reg_write(ar, address, sleep); if (status) return status; address = MBOX_BASE_ADDRESS + LOCAL_SCRATCH_ADDRESS; param = options | 0x20; status = ath6kl_bmi_reg_write(ar, address, param); if (status) return status; /* Configure GPIO AR6003 UART */ param = CONFIG_AR600x_DEBUG_UART_TX_PIN; status = ath6kl_bmi_write(ar, ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_dbg_uart_txpin)), (u8 *)¶m, 4); return status; } static int ath6kl_init_hw_params(struct ath6kl *ar) { switch (ar->version.target_ver) { case AR6003_REV2_VERSION: ar->hw.dataset_patch_addr = AR6003_REV2_DATASET_PATCH_ADDRESS; ar->hw.app_load_addr = AR6003_REV2_APP_LOAD_ADDRESS; ar->hw.board_ext_data_addr = AR6003_REV2_BOARD_EXT_DATA_ADDRESS; ar->hw.reserved_ram_size = AR6003_REV2_RAM_RESERVE_SIZE; /* hw2.0 needs override address hardcoded */ ar->hw.app_start_override_addr = 0x944C00; break; case AR6003_REV3_VERSION: ar->hw.dataset_patch_addr = AR6003_REV3_DATASET_PATCH_ADDRESS; ar->hw.app_load_addr = 0x1234; ar->hw.board_ext_data_addr = AR6003_REV3_BOARD_EXT_DATA_ADDRESS; ar->hw.reserved_ram_size = AR6003_REV3_RAM_RESERVE_SIZE; break; case AR6004_REV1_VERSION: ar->hw.dataset_patch_addr = AR6003_REV2_DATASET_PATCH_ADDRESS; ar->hw.app_load_addr = AR6003_REV3_APP_LOAD_ADDRESS; ar->hw.board_ext_data_addr = AR6004_REV1_BOARD_EXT_DATA_ADDRESS; ar->hw.reserved_ram_size = AR6004_REV1_RAM_RESERVE_SIZE; break; default: ath6kl_err("Unsupported hardware version: 0x%x\n", ar->version.target_ver); return -EINVAL; } ath6kl_dbg(ATH6KL_DBG_BOOT, "target_ver 0x%x target_type 0x%x dataset_patch 0x%x app_load_addr 0x%x\n", ar->version.target_ver, ar->target_type, ar->hw.dataset_patch_addr, ar->hw.app_load_addr); ath6kl_dbg(ATH6KL_DBG_BOOT, "app_start_override_addr 0x%x board_ext_data_addr 0x%x reserved_ram_size 0x%x", ar->hw.app_start_override_addr, ar->hw.board_ext_data_addr, ar->hw.reserved_ram_size); return 0; } static int ath6kl_init(struct ath6kl *ar) { int status = 0; s32 timeleft; struct net_device *ndev; if (!ar) return -EIO; /* Do we need to finish the BMI phase */ if (ath6kl_bmi_done(ar)) { status = -EIO; goto ath6kl_init_done; } /* Indicate that WMI is enabled (although not ready yet) */ set_bit(WMI_ENABLED, &ar->flag); ar->wmi = ath6kl_wmi_init(ar); if (!ar->wmi) { ath6kl_err("failed to initialize wmi\n"); status = -EIO; goto ath6kl_init_done; } ath6kl_dbg(ATH6KL_DBG_TRC, "%s: got wmi @ 0x%p.\n", __func__, ar->wmi); status = ath6kl_register_ieee80211_hw(ar); if (status) goto err_node_cleanup; status = ath6kl_debug_init(ar); if (status) { wiphy_unregister(ar->wiphy); goto err_node_cleanup; } rtnl_lock(); /* Add an initial station interface */ ndev = ath6kl_interface_add(ar, "wlan%d", NL80211_IFTYPE_STATION, 0); rtnl_unlock(); if (!ndev) { ath6kl_err("Failed to instantiate a network device\n"); status = -ENOMEM; wiphy_unregister(ar->wiphy); goto err_debug_init; } ath6kl_dbg(ATH6KL_DBG_TRC, "%s: name=%s dev=0x%p, ar=0x%p\n", __func__, ndev->name, ndev, ar); /* * The reason we have to wait for the target here is that the * driver layer has to init BMI in order to set the host block * size. */ if (ath6kl_htc_wait_target(ar->htc_target)) { status = -EIO; goto err_if_deinit; } if (ath6kl_init_service_ep(ar)) { status = -EIO; goto err_cleanup_scatter; } /* setup access class priority mappings */ ar->ac_stream_pri_map[WMM_AC_BK] = 0; /* lowest */ ar->ac_stream_pri_map[WMM_AC_BE] = 1; ar->ac_stream_pri_map[WMM_AC_VI] = 2; ar->ac_stream_pri_map[WMM_AC_VO] = 3; /* highest */ /* give our connected endpoints some buffers */ ath6kl_rx_refill(ar->htc_target, ar->ctrl_ep); ath6kl_rx_refill(ar->htc_target, ar->ac2ep_map[WMM_AC_BE]); /* allocate some buffers that handle larger AMSDU frames */ ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS); /* setup credit distribution */ ath6k_setup_credit_dist(ar->htc_target, &ar->credit_state_info); ath6kl_cookie_init(ar); /* start HTC */ status = ath6kl_htc_start(ar->htc_target); if (status) { ath6kl_cookie_cleanup(ar); goto err_rxbuf_cleanup; } /* Wait for Wmi event to be ready */ timeleft = wait_event_interruptible_timeout(ar->event_wq, test_bit(WMI_READY, &ar->flag), WMI_TIMEOUT); ath6kl_dbg(ATH6KL_DBG_BOOT, "firmware booted\n"); if (ar->version.abi_ver != ATH6KL_ABI_VERSION) { ath6kl_err("abi version mismatch: host(0x%x), target(0x%x)\n", ATH6KL_ABI_VERSION, ar->version.abi_ver); status = -EIO; goto err_htc_stop; } if (!timeleft || signal_pending(current)) { ath6kl_err("wmi is not ready or wait was interrupted\n"); status = -EIO; goto err_htc_stop; } ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__); /* communicate the wmi protocol verision to the target */ if ((ath6kl_set_host_app_area(ar)) != 0) ath6kl_err("unable to set the host app area\n"); ar->conf_flags = ATH6KL_CONF_IGNORE_ERP_BARKER | ATH6KL_CONF_ENABLE_11N | ATH6KL_CONF_ENABLE_TX_BURST; ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM | WIPHY_FLAG_HAVE_AP_SME; status = ath6kl_target_config_wlan_params(ar); if (status) goto err_htc_stop; /* * Set mac address which is received in ready event * FIXME: Move to ath6kl_interface_add() */ memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN); return status; err_htc_stop: ath6kl_htc_stop(ar->htc_target); err_rxbuf_cleanup: ath6kl_htc_flush_rx_buf(ar->htc_target); ath6kl_cleanup_amsdu_rxbufs(ar); err_cleanup_scatter: ath6kl_hif_cleanup_scatter(ar); err_if_deinit: rtnl_lock(); ath6kl_deinit_if_data(netdev_priv(ndev)); rtnl_unlock(); wiphy_unregister(ar->wiphy); err_debug_init: ath6kl_debug_cleanup(ar); err_node_cleanup: ath6kl_wmi_shutdown(ar->wmi); clear_bit(WMI_ENABLED, &ar->flag); ar->wmi = NULL; ath6kl_init_done: return status; } int ath6kl_core_init(struct ath6kl *ar) { int ret = 0; struct ath6kl_bmi_target_info targ_info; ar->ath6kl_wq = create_singlethread_workqueue("ath6kl"); if (!ar->ath6kl_wq) return -ENOMEM; ret = ath6kl_bmi_init(ar); if (ret) goto err_wq; ret = ath6kl_bmi_get_target_info(ar, &targ_info); if (ret) goto err_bmi_cleanup; ar->version.target_ver = le32_to_cpu(targ_info.version); ar->target_type = le32_to_cpu(targ_info.type); ar->wiphy->hw_version = le32_to_cpu(targ_info.version); ret = ath6kl_init_hw_params(ar); if (ret) goto err_bmi_cleanup; ret = ath6kl_configure_target(ar); if (ret) goto err_bmi_cleanup; ar->htc_target = ath6kl_htc_create(ar); if (!ar->htc_target) { ret = -ENOMEM; goto err_bmi_cleanup; } ret = ath6kl_fetch_firmwares(ar); if (ret) goto err_htc_cleanup; ret = ath6kl_init_upload(ar); if (ret) goto err_htc_cleanup; ret = ath6kl_init(ar); if (ret) goto err_htc_cleanup; return ret; err_htc_cleanup: ath6kl_htc_cleanup(ar->htc_target); err_bmi_cleanup: ath6kl_bmi_cleanup(ar); err_wq: destroy_workqueue(ar->ath6kl_wq); return ret; } static void ath6kl_cleanup_vif(struct ath6kl_vif *vif, bool wmi_ready) { static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; bool discon_issued; netif_stop_queue(vif->ndev); clear_bit(WLAN_ENABLED, &vif->flags); if (wmi_ready) { discon_issued = test_bit(CONNECTED, &vif->flags) || test_bit(CONNECT_PEND, &vif->flags); ath6kl_disconnect(vif); del_timer(&vif->disconnect_timer); if (discon_issued) ath6kl_disconnect_event(vif, DISCONNECT_CMD, (vif->nw_type & AP_NETWORK) ? bcast_mac : vif->bssid, 0, NULL, 0); } if (vif->scan_req) { cfg80211_scan_done(vif->scan_req, true); vif->scan_req = NULL; } } void ath6kl_stop_txrx(struct ath6kl *ar) { struct ath6kl_vif *vif, *tmp_vif; set_bit(DESTROY_IN_PROGRESS, &ar->flag); if (down_interruptible(&ar->sem)) { ath6kl_err("down_interruptible failed\n"); return; } spin_lock(&ar->list_lock); list_for_each_entry_safe(vif, tmp_vif, &ar->vif_list, list) { list_del(&vif->list); spin_unlock(&ar->list_lock); ath6kl_cleanup_vif(vif, test_bit(WMI_READY, &ar->flag)); rtnl_lock(); ath6kl_deinit_if_data(vif); rtnl_unlock(); spin_lock(&ar->list_lock); } spin_unlock(&ar->list_lock); clear_bit(WMI_READY, &ar->flag); /* * After wmi_shudown all WMI events will be dropped. We * need to cleanup the buffers allocated in AP mode and * give disconnect notification to stack, which usually * happens in the disconnect_event. Simulate the disconnect * event by calling the function directly. Sometimes * disconnect_event will be received when the debug logs * are collected. */ ath6kl_wmi_shutdown(ar->wmi); clear_bit(WMI_ENABLED, &ar->flag); if (ar->htc_target) { ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); ath6kl_htc_stop(ar->htc_target); } /* * Try to reset the device if we can. The driver may have been * configure NOT to reset the target during a debug session. */ ath6kl_dbg(ATH6KL_DBG_TRC, "attempting to reset target on instance destroy\n"); ath6kl_reset_device(ar, ar->target_type, true, true); clear_bit(WLAN_ENABLED, &ar->flag); }