Merge tag 'for-linville-20130730' of git://github.com/kvalo/ath6kl (1f807827) · Commits · github.com / kvm-riscv / linux

drivers/net/wireless/ath/ath10k/bmi.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -20,6 +20,12 @@
		#include "debug.h"
		#include "htc.h"

		void ath10k_bmi_start(struct ath10k *ar)
		{
		ath10k_dbg(ATH10K_DBG_CORE, "BMI started\n");
		ar->bmi.done_sent = false;
		}

		int ath10k_bmi_done(struct ath10k *ar)
		{
		struct bmi_cmd cmd;
		@@ -105,7 +111,8 @@ int ath10k_bmi_read_memory(struct ath10k *ar,
		ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen,
		&resp, &rxlen);
		if (ret) {
		ath10k_warn("unable to read from the device\n");
		ath10k_warn("unable to read from the device (%d)\n",
		ret);
		return ret;
		}

		@@ -149,7 +156,8 @@ int ath10k_bmi_write_memory(struct ath10k *ar,
		ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, hdrlen + txlen,
		NULL, NULL);
		if (ret) {
		ath10k_warn("unable to write to the device\n");
		ath10k_warn("unable to write to the device (%d)\n",
		ret);
		return ret;
		}

drivers/net/wireless/ath/ath10k/bmi.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -184,6 +184,7 @@ struct bmi_target_info {
		#define BMI_CE_NUM_TO_TARG 0
		#define BMI_CE_NUM_TO_HOST 1

		void ath10k_bmi_start(struct ath10k *ar);
		int ath10k_bmi_done(struct ath10k *ar);
		int ath10k_bmi_get_target_info(struct ath10k *ar,
		struct bmi_target_info *target_info);

drivers/net/wireless/ath/ath10k/ce.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -79,7 +79,7 @@ static inline void ath10k_ce_src_ring_write_index_set(struct ath10k *ar,
		struct ath10k_pci *ar_pci = ath10k_pci_priv(ar);
		void __iomem *indicator_addr;

		if (!test_bit(ATH10K_PCI_FEATURE_HW_1_0_WARKAROUND, ar_pci->features)) {
		if (!test_bit(ATH10K_PCI_FEATURE_HW_1_0_WORKAROUND, ar_pci->features)) {
		ath10k_pci_write32(ar, ce_ctrl_addr + SR_WR_INDEX_ADDRESS, n);
		return;
		}

drivers/net/wireless/ath/ath10k/core.c

+210 −111

Original line number	Diff line number	Diff line
		@@ -100,7 +100,7 @@ static int ath10k_init_connect_htc(struct ath10k *ar)
		goto conn_fail;

		/* Start HTC */
		status = ath10k_htc_start(ar->htc);
		status = ath10k_htc_start(&ar->htc);
		if (status)
		goto conn_fail;

		@@ -116,7 +116,7 @@ static int ath10k_init_connect_htc(struct ath10k *ar)
		return 0;

		timeout:
		ath10k_htc_stop(ar->htc);
		ath10k_htc_stop(&ar->htc);
		conn_fail:
		return status;
		}
		@@ -247,19 +247,11 @@ static int ath10k_push_board_ext_data(struct ath10k *ar,

		static int ath10k_download_board_data(struct ath10k *ar)
		{
		const struct firmware *fw = ar->board_data;
		u32 board_data_size = QCA988X_BOARD_DATA_SZ;
		u32 address;
		const struct firmware *fw;
		int ret;

		fw = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir,
		ar->hw_params.fw.board);
		if (IS_ERR(fw)) {
		ath10k_err("could not fetch board data fw file (%ld)\n",
		PTR_ERR(fw));
		return PTR_ERR(fw);
		}

		ret = ath10k_push_board_ext_data(ar, fw);
		if (ret) {
		ath10k_err("could not push board ext data (%d)\n", ret);
		@@ -286,32 +278,20 @@ static int ath10k_download_board_data(struct ath10k *ar)
		}

		exit:
		release_firmware(fw);
		return ret;
		}

		static int ath10k_download_and_run_otp(struct ath10k *ar)
		{
		const struct firmware *fw;
		u32 address;
		const struct firmware *fw = ar->otp;
		u32 address = ar->hw_params.patch_load_addr;
		u32 exec_param;
		int ret;

		/* OTP is optional */

		if (ar->hw_params.fw.otp == NULL) {
		ath10k_info("otp file not defined\n");
		return 0;
		}

		address = ar->hw_params.patch_load_addr;

		fw = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir,
		ar->hw_params.fw.otp);
		if (IS_ERR(fw)) {
		ath10k_warn("could not fetch otp (%ld)\n", PTR_ERR(fw));
		if (!ar->otp)
		return 0;
		}

		ret = ath10k_bmi_fast_download(ar, address, fw->data, fw->size);
		if (ret) {
		@@ -327,28 +307,17 @@ static int ath10k_download_and_run_otp(struct ath10k *ar)
		}

		exit:
		release_firmware(fw);
		return ret;
		}

		static int ath10k_download_fw(struct ath10k *ar)
		{
		const struct firmware *fw;
		const struct firmware *fw = ar->firmware;
		u32 address;
		int ret;

		if (ar->hw_params.fw.fw == NULL)
		return -EINVAL;

		address = ar->hw_params.patch_load_addr;

		fw = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir,
		ar->hw_params.fw.fw);
		if (IS_ERR(fw)) {
		ath10k_err("could not fetch fw (%ld)\n", PTR_ERR(fw));
		return PTR_ERR(fw);
		}

		ret = ath10k_bmi_fast_download(ar, address, fw->data, fw->size);
		if (ret) {
		ath10k_err("could not write fw (%d)\n", ret);
		@@ -356,7 +325,74 @@ static int ath10k_download_fw(struct ath10k *ar)
		}

		exit:
		release_firmware(fw);
		return ret;
		}

		static void ath10k_core_free_firmware_files(struct ath10k *ar)
		{
		if (ar->board_data && !IS_ERR(ar->board_data))
		release_firmware(ar->board_data);

		if (ar->otp && !IS_ERR(ar->otp))
		release_firmware(ar->otp);

		if (ar->firmware && !IS_ERR(ar->firmware))
		release_firmware(ar->firmware);

		ar->board_data = NULL;
		ar->otp = NULL;
		ar->firmware = NULL;
		}

		static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
		{
		int ret = 0;

		if (ar->hw_params.fw.fw == NULL) {
		ath10k_err("firmware file not defined\n");
		return -EINVAL;
		}

		if (ar->hw_params.fw.board == NULL) {
		ath10k_err("board data file not defined");
		return -EINVAL;
		}

		ar->board_data = ath10k_fetch_fw_file(ar,
		ar->hw_params.fw.dir,
		ar->hw_params.fw.board);
		if (IS_ERR(ar->board_data)) {
		ret = PTR_ERR(ar->board_data);
		ath10k_err("could not fetch board data (%d)\n", ret);
		goto err;
		}

		ar->firmware = ath10k_fetch_fw_file(ar,
		ar->hw_params.fw.dir,
		ar->hw_params.fw.fw);
		if (IS_ERR(ar->firmware)) {
		ret = PTR_ERR(ar->firmware);
		ath10k_err("could not fetch firmware (%d)\n", ret);
		goto err;
		}

		/* OTP may be undefined. If so, don't fetch it at all */
		if (ar->hw_params.fw.otp == NULL)
		return 0;

		ar->otp = ath10k_fetch_fw_file(ar,
		ar->hw_params.fw.dir,
		ar->hw_params.fw.otp);
		if (IS_ERR(ar->otp)) {
		ret = PTR_ERR(ar->otp);
		ath10k_err("could not fetch otp (%d)\n", ret);
		goto err;
		}

		return 0;

		err:
		ath10k_core_free_firmware_files(ar);
		return ret;
		}

		@@ -440,8 +476,35 @@ static int ath10k_init_hw_params(struct ath10k *ar)
		return 0;
		}

		static void ath10k_core_restart(struct work_struct *work)
		{
		struct ath10k *ar = container_of(work, struct ath10k, restart_work);

		mutex_lock(&ar->conf_mutex);

		switch (ar->state) {
		case ATH10K_STATE_ON:
		ath10k_halt(ar);
		ar->state = ATH10K_STATE_RESTARTING;
		ieee80211_restart_hw(ar->hw);
		break;
		case ATH10K_STATE_OFF:
		/* this can happen if driver is being unloaded */
		ath10k_warn("cannot restart a device that hasn't been started\n");
		break;
		case ATH10K_STATE_RESTARTING:
		case ATH10K_STATE_RESTARTED:
		ar->state = ATH10K_STATE_WEDGED;
		/* fall through */
		case ATH10K_STATE_WEDGED:
		ath10k_warn("device is wedged, will not restart\n");
		break;
		}

		mutex_unlock(&ar->conf_mutex);
		}

		struct ath10k ath10k_core_create(void hif_priv, struct device *dev,
		enum ath10k_bus bus,
		const struct ath10k_hif_ops *hif_ops)
		{
		struct ath10k *ar;
		@@ -458,9 +521,6 @@ struct ath10k ath10k_core_create(void hif_priv, struct device *dev,

		ar->hif.priv = hif_priv;
		ar->hif.ops = hif_ops;
		ar->hif.bus = bus;

		ar->free_vdev_map = 0xFF; /* 8 vdevs */

		init_completion(&ar->scan.started);
		init_completion(&ar->scan.completed);
		@@ -487,6 +547,8 @@ struct ath10k ath10k_core_create(void hif_priv, struct device *dev,

		init_waitqueue_head(&ar->event_queue);

		INIT_WORK(&ar->restart_work, ath10k_core_restart);

		return ar;

		err_wq:
		@@ -504,24 +566,11 @@ void ath10k_core_destroy(struct ath10k *ar)
		}
		EXPORT_SYMBOL(ath10k_core_destroy);


		int ath10k_core_register(struct ath10k *ar)
		int ath10k_core_start(struct ath10k *ar)
		{
		struct ath10k_htc_ops htc_ops;
		struct bmi_target_info target_info;
		int status;

		memset(&target_info, 0, sizeof(target_info));
		status = ath10k_bmi_get_target_info(ar, &target_info);
		if (status)
		goto err;

		ar->target_version = target_info.version;
		ar->hw->wiphy->hw_version = target_info.version;

		status = ath10k_init_hw_params(ar);
		if (status)
		goto err;
		ath10k_bmi_start(ar);

		if (ath10k_init_configure_target(ar)) {
		status = -EINVAL;
		@@ -536,32 +585,32 @@ int ath10k_core_register(struct ath10k *ar)
		if (status)
		goto err;

		htc_ops.target_send_suspend_complete = ath10k_send_suspend_complete;
		ar->htc.htc_ops.target_send_suspend_complete =
		ath10k_send_suspend_complete;

		ar->htc = ath10k_htc_create(ar, &htc_ops);
		if (IS_ERR(ar->htc)) {
		status = PTR_ERR(ar->htc);
		ath10k_err("could not create HTC (%d)\n", status);
		status = ath10k_htc_init(ar);
		if (status) {
		ath10k_err("could not init HTC (%d)\n", status);
		goto err;
		}

		status = ath10k_bmi_done(ar);
		if (status)
		goto err_htc_destroy;
		goto err;

		status = ath10k_wmi_attach(ar);
		if (status) {
		ath10k_err("WMI attach failed: %d\n", status);
		goto err_htc_destroy;
		goto err;
		}

		status = ath10k_htc_wait_target(ar->htc);
		status = ath10k_htc_wait_target(&ar->htc);
		if (status)
		goto err_wmi_detach;

		ar->htt = ath10k_htt_attach(ar);
		if (!ar->htt) {
		status = -ENOMEM;
		status = ath10k_htt_attach(ar);
		if (status) {
		ath10k_err("could not attach htt (%d)\n", status);
		goto err_wmi_detach;
		}

		@@ -588,77 +637,127 @@ int ath10k_core_register(struct ath10k *ar)
		goto err_disconnect_htc;
		}

		status = ath10k_htt_attach_target(ar->htt);
		if (status)
		goto err_disconnect_htc;

		status = ath10k_mac_register(ar);
		status = ath10k_htt_attach_target(&ar->htt);
		if (status)
		goto err_disconnect_htc;

		status = ath10k_debug_create(ar);
		if (status) {
		ath10k_err("unable to initialize debugfs\n");
		goto err_unregister_mac;
		}
		ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;

		return 0;

		err_unregister_mac:
		ath10k_mac_unregister(ar);
		err_disconnect_htc:
		ath10k_htc_stop(ar->htc);
		ath10k_htc_stop(&ar->htc);
		err_htt_detach:
		ath10k_htt_detach(ar->htt);
		ath10k_htt_detach(&ar->htt);
		err_wmi_detach:
		ath10k_wmi_detach(ar);
		err_htc_destroy:
		ath10k_htc_destroy(ar->htc);
		err:
		return status;
		}
		EXPORT_SYMBOL(ath10k_core_register);
		EXPORT_SYMBOL(ath10k_core_start);

		void ath10k_core_unregister(struct ath10k *ar)
		void ath10k_core_stop(struct ath10k *ar)
		{
		/* We must unregister from mac80211 before we stop HTC and HIF.
		* Otherwise we will fail to submit commands to FW and mac80211 will be
		* unhappy about callback failures. */
		ath10k_mac_unregister(ar);
		ath10k_htc_stop(ar->htc);
		ath10k_htt_detach(ar->htt);
		ath10k_htc_stop(&ar->htc);
		ath10k_htt_detach(&ar->htt);
		ath10k_wmi_detach(ar);
		ath10k_htc_destroy(ar->htc);
		}
		EXPORT_SYMBOL(ath10k_core_unregister);
		EXPORT_SYMBOL(ath10k_core_stop);

		int ath10k_core_target_suspend(struct ath10k *ar)
		/* mac80211 manages fw/hw initialization through start/stop hooks. However in
		* order to know what hw capabilities should be advertised to mac80211 it is
		* necessary to load the firmware (and tear it down immediately since start
		* hook will try to init it again) before registering */
		static int ath10k_core_probe_fw(struct ath10k *ar)
		{
		int ret;
		struct bmi_target_info target_info;
		int ret = 0;

		ath10k_dbg(ATH10K_DBG_CORE, "%s: called", __func__);
		ret = ath10k_hif_power_up(ar);
		if (ret) {
		ath10k_err("could not start pci hif (%d)\n", ret);
		return ret;
		}

		ret = ath10k_wmi_pdev_suspend_target(ar);
		if (ret)
		ath10k_warn("could not suspend target (%d)\n", ret);
		memset(&target_info, 0, sizeof(target_info));
		ret = ath10k_bmi_get_target_info(ar, &target_info);
		if (ret) {
		ath10k_err("could not get target info (%d)\n", ret);
		ath10k_hif_power_down(ar);
		return ret;
		}

		ar->target_version = target_info.version;
		ar->hw->wiphy->hw_version = target_info.version;

		ret = ath10k_init_hw_params(ar);
		if (ret) {
		ath10k_err("could not get hw params (%d)\n", ret);
		ath10k_hif_power_down(ar);
		return ret;
		}

		ret = ath10k_core_fetch_firmware_files(ar);
		if (ret) {
		ath10k_err("could not fetch firmware files (%d)\n", ret);
		ath10k_hif_power_down(ar);
		return ret;
		}

		ret = ath10k_core_start(ar);
		if (ret) {
		ath10k_err("could not init core (%d)\n", ret);
		ath10k_core_free_firmware_files(ar);
		ath10k_hif_power_down(ar);
		return ret;
		}
		EXPORT_SYMBOL(ath10k_core_target_suspend);

		int ath10k_core_target_resume(struct ath10k *ar)
		ath10k_core_stop(ar);
		ath10k_hif_power_down(ar);
		return 0;
		}

		int ath10k_core_register(struct ath10k *ar)
		{
		int ret;
		int status;

		ath10k_dbg(ATH10K_DBG_CORE, "%s: called", __func__);
		status = ath10k_core_probe_fw(ar);
		if (status) {
		ath10k_err("could not probe fw (%d)\n", status);
		return status;
		}

		ret = ath10k_wmi_pdev_resume_target(ar);
		if (ret)
		ath10k_warn("could not resume target (%d)\n", ret);
		status = ath10k_mac_register(ar);
		if (status) {
		ath10k_err("could not register to mac80211 (%d)\n", status);
		goto err_release_fw;
		}

		return ret;
		status = ath10k_debug_create(ar);
		if (status) {
		ath10k_err("unable to initialize debugfs\n");
		goto err_unregister_mac;
		}

		return 0;

		err_unregister_mac:
		ath10k_mac_unregister(ar);
		err_release_fw:
		ath10k_core_free_firmware_files(ar);
		return status;
		}
		EXPORT_SYMBOL(ath10k_core_target_resume);
		EXPORT_SYMBOL(ath10k_core_register);

		void ath10k_core_unregister(struct ath10k *ar)
		{
		/* We must unregister from mac80211 before we stop HTC and HIF.
		* Otherwise we will fail to submit commands to FW and mac80211 will be
		* unhappy about callback failures. */
		ath10k_mac_unregister(ar);
		ath10k_core_free_firmware_files(ar);
		}
		EXPORT_SYMBOL(ath10k_core_unregister);

		MODULE_AUTHOR("Qualcomm Atheros");
		MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");

drivers/net/wireless/ath/ath10k/core.h

+36 −14

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@
		#include <linux/types.h>
		#include <linux/pci.h>

		#include "htt.h"
		#include "htc.h"
		#include "hw.h"
		#include "targaddrs.h"
		@@ -43,10 +44,6 @@

		struct ath10k;

		enum ath10k_bus {
		ATH10K_BUS_PCI,
		};

		struct ath10k_skb_cb {
		dma_addr_t paddr;
		bool is_mapped;
		@@ -250,6 +247,28 @@ struct ath10k_debug {
		struct completion event_stats_compl;
		};

		enum ath10k_state {
		ATH10K_STATE_OFF = 0,
		ATH10K_STATE_ON,

		/* When doing firmware recovery the device is first powered down.
		* mac80211 is supposed to call in to start() hook later on. It is
		* however possible that driver unloading and firmware crash overlap.
		* mac80211 can wait on conf_mutex in stop() while the device is
		* stopped in ath10k_core_restart() work holding conf_mutex. The state
		* RESTARTED means that the device is up and mac80211 has started hw
		* reconfiguration. Once mac80211 is done with the reconfiguration we
		* set the state to STATE_ON in restart_complete(). */
		ATH10K_STATE_RESTARTING,
		ATH10K_STATE_RESTARTED,

		/* The device has crashed while restarting hw. This state is like ON
		* but commands are blocked in HTC and -ECOMM response is given. This
		* prevents completion timeouts and makes the driver more responsive to
		* userspace commands. This is also prevents recursive recovery. */
		ATH10K_STATE_WEDGED,
		};

		struct ath10k {
		struct ath_common ath_common;
		struct ieee80211_hw *hw;
		@@ -274,19 +293,16 @@ struct ath10k {

		struct {
		void *priv;
		enum ath10k_bus bus;
		const struct ath10k_hif_ops *ops;
		} hif;

		struct ath10k_wmi wmi;

		wait_queue_head_t event_queue;
		bool is_target_paused;

		struct ath10k_bmi bmi;

		struct ath10k_htc *htc;
		struct ath10k_htt *htt;
		struct ath10k_wmi wmi;
		struct ath10k_htc htc;
		struct ath10k_htt htt;

		struct ath10k_hw_params {
		u32 id;
		@@ -301,6 +317,10 @@ struct ath10k {
		} fw;
		} hw_params;

		const struct firmware *board_data;
		const struct firmware *otp;
		const struct firmware *firmware;

		struct {
		struct completion started;
		struct completion completed;
		@@ -350,20 +370,22 @@ struct ath10k {
		struct completion offchan_tx_completed;
		struct sk_buff *offchan_tx_skb;

		enum ath10k_state state;

		struct work_struct restart_work;

		#ifdef CONFIG_ATH10K_DEBUGFS
		struct ath10k_debug debug;
		#endif
		};

		struct ath10k ath10k_core_create(void hif_priv, struct device *dev,
		enum ath10k_bus bus,
		const struct ath10k_hif_ops *hif_ops);
		void ath10k_core_destroy(struct ath10k *ar);

		int ath10k_core_start(struct ath10k *ar);
		void ath10k_core_stop(struct ath10k *ar);
		int ath10k_core_register(struct ath10k *ar);
		void ath10k_core_unregister(struct ath10k *ar);

		int ath10k_core_target_suspend(struct ath10k *ar);
		int ath10k_core_target_resume(struct ath10k *ar);

		#endif /* _CORE_H_ */