From 20459ee2744d0dc47849ff5791e68ec805aa0a88 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Thu, 27 Oct 2011 18:48:37 +0300 Subject: [PATCH] ath6kl: separate hardware boot code from module initialisation code Refactor the code needed to boot the hardware to a separate function so that it will be easier boot and shutdown hardware. No functional changes (hopefully). Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/init.c | 183 +++++++++++++++++++-------------- 1 file changed, 106 insertions(+), 77 deletions(-) diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c index 62e0f22..2ee6a5e 100644 --- a/drivers/net/wireless/ath/ath6kl/init.c +++ b/drivers/net/wireless/ath/ath6kl/init.c @@ -1421,12 +1421,107 @@ static int ath6kl_init_hw_params(struct ath6kl *ar) return 0; } +static int ath6kl_hw_start(struct ath6kl *ar) +{ + long timeleft; + int ret, i; + + ret = ath6kl_hif_power_on(ar); + if (ret) + return ret; + + ret = ath6kl_configure_target(ar); + if (ret) + goto err_power_off; + + ret = ath6kl_init_upload(ar); + if (ret) + goto err_power_off; + + /* Do we need to finish the BMI phase */ + /* FIXME: return error from ath6kl_bmi_done() */ + if (ath6kl_bmi_done(ar)) { + ret = -EIO; + goto err_power_off; + } + + /* + * 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)) { + ret = -EIO; + goto err_power_off; + } + + if (ath6kl_init_service_ep(ar)) { + ret = -EIO; + goto err_cleanup_scatter; + } + + /* setup credit distribution */ + ath6kl_credit_setup(ar->htc_target, &ar->credit_state_info); + + /* start HTC */ + ret = ath6kl_htc_start(ar->htc_target); + if (ret) { + /* FIXME: call this */ + ath6kl_cookie_cleanup(ar); + goto err_cleanup_scatter; + } + + /* 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); + ret = -EIO; + goto err_htc_stop; + } + + if (!timeleft || signal_pending(current)) { + ath6kl_err("wmi is not ready or wait was interrupted\n"); + ret = -EIO; + goto err_htc_stop; + } + + ath6kl_dbg(ATH6KL_DBG_TRC, "%s: wmi is ready\n", __func__); + + /* communicate the wmi protocol verision to the target */ + /* FIXME: return error */ + if ((ath6kl_set_host_app_area(ar)) != 0) + ath6kl_err("unable to set the host app area\n"); + + for (i = 0; i < MAX_NUM_VIF; i++) { + ret = ath6kl_target_config_wlan_params(ar, i); + if (ret) + goto err_htc_stop; + } + + return 0; + +err_htc_stop: + ath6kl_htc_stop(ar->htc_target); +err_cleanup_scatter: + ath6kl_hif_cleanup_scatter(ar); +err_power_off: + ath6kl_hif_power_off(ar); + + return ret; +} + int ath6kl_core_init(struct ath6kl *ar) { struct ath6kl_bmi_target_info targ_info; - s32 timeleft; struct net_device *ndev; - int i, ret = 0; + int ret = 0, i; ar->ath6kl_wq = create_singlethread_workqueue("ath6kl"); if (!ar->ath6kl_wq) @@ -1436,6 +1531,11 @@ int ath6kl_core_init(struct ath6kl *ar) if (ret) goto err_wq; + /* + * Turn on power to get hardware (target) version and leave power + * on delibrately as we will boot the hardware anyway within few + * seconds. + */ ret = ath6kl_hif_power_on(ar); if (ret) goto err_bmi_cleanup; @@ -1452,10 +1552,6 @@ int ath6kl_core_init(struct ath6kl *ar) if (ret) goto err_power_off; - ret = ath6kl_configure_target(ar); - if (ret) - goto err_power_off; - ar->htc_target = ath6kl_htc_create(ar); if (!ar->htc_target) { @@ -1469,16 +1565,6 @@ int ath6kl_core_init(struct ath6kl *ar) /* FIXME: we should free all firmwares in the error cases below */ - ret = ath6kl_init_upload(ar); - if (ret) - goto err_htc_cleanup; - - /* Do we need to finish the BMI phase */ - if (ath6kl_bmi_done(ar)) { - ret = -EIO; - goto err_htc_cleanup; - } - /* Indicate that WMI is enabled (although not ready yet) */ set_bit(WMI_ENABLED, &ar->flag); ar->wmi = ath6kl_wmi_init(ar); @@ -1522,21 +1608,6 @@ int ath6kl_core_init(struct ath6kl *ar) 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)) { - ret = -EIO; - goto err_if_deinit; - } - - if (ath6kl_init_service_ep(ar)) { - ret = -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; @@ -1550,55 +1621,18 @@ int ath6kl_core_init(struct ath6kl *ar) /* allocate some buffers that handle larger AMSDU frames */ ath6kl_refill_amsdu_rxbufs(ar, ATH6KL_MAX_AMSDU_RX_BUFFERS); - /* setup credit distribution */ - ath6kl_credit_setup(ar->htc_target, &ar->credit_state_info); - ath6kl_cookie_init(ar); - /* start HTC */ - ret = ath6kl_htc_start(ar->htc_target); - if (ret) { - 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); - ret = -EIO; - goto err_htc_stop; - } - - if (!timeleft || signal_pending(current)) { - ath6kl_err("wmi is not ready or wait was interrupted\n"); - ret = -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; - for (i = 0; i < MAX_NUM_VIF; i++) { - ret = ath6kl_target_config_wlan_params(ar, i); - if (ret) - goto err_htc_stop; + ret = ath6kl_hw_start(ar); + if (ret) { + ath6kl_err("Failed to boot hardware: %d\n", ret); + goto err_rxbuf_cleanup; } /* @@ -1609,14 +1643,9 @@ int ath6kl_core_init(struct ath6kl *ar) return ret; -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(); -- 2.7.4