[PATCH v3 3/3] ath10k: Add fw feature flag for non-bmi firmware load

[Rakesh Pillai <pillair@qti.qualcomm.com>]

HL1.0 firmware is not loaded via bmi. The bmi specific
code should not be executed for HL1.0

Add fw feature flag for non bmi targets and skip the bmi
specific code for non bmi targets.

Signed-off-by: Rakesh Pillai <pillair@qti.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/core.c | 180 +++++++++++++++++++--------------
 drivers/net/wireless/ath/ath10k/core.h |   3 +
 2 files changed, 108 insertions(+), 75 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index b6d5bad6f5ec..188efa8dcfc0 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -445,6 +445,7 @@ static const char *const ath10k_core_fw_feature_str[] = {
 	[ATH10K_FW_FEATURE_ALLOWS_MESH_BCAST] = "allows-mesh-bcast",
 	[ATH10K_FW_FEATURE_NO_PS] = "no-ps",
 	[ATH10K_FW_FEATURE_MGMT_TX_BY_REF] = "mgmt-tx-by-reference",
+	[ATH10K_FW_FEATURE_NON_BMI] = "non-bmi",
 };
 
 static unsigned int ath10k_core_get_fw_feature_str(char *buf,
@@ -1524,8 +1525,8 @@ int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name,
 		data += ie_len;
 	}
 
-	if (!fw_file->firmware_data ||
-	    !fw_file->firmware_len) {
+	if (!test_bit(ATH10K_FW_FEATURE_NON_BMI, fw_file->fw_features) &&
+	    (!fw_file->firmware_data || !fw_file->firmware_len)) {
 		ath10k_warn(ar, "No ATH10K_FW_IE_FW_IMAGE found from '%s/%s', skipping\n",
 			    ar->hw_params.fw.dir, name);
 		ret = -ENOMEDIUM;
@@ -2079,43 +2080,47 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode,
 
 	ar->running_fw = fw;
 
-	ath10k_bmi_start(ar);
+	if (!test_bit(ATH10K_FW_FEATURE_NON_BMI,
+		      ar->running_fw->fw_file.fw_features)) {
+		ath10k_bmi_start(ar);
 
-	if (ath10k_init_configure_target(ar)) {
-		status = -EINVAL;
-		goto err;
-	}
-
-	status = ath10k_download_cal_data(ar);
-	if (status)
-		goto err;
+		if (ath10k_init_configure_target(ar)) {
+			status = -EINVAL;
+			goto err;
+		}
 
-	/* Some of of qca988x solutions are having global reset issue
-	 * during target initialization. Bypassing PLL setting before
-	 * downloading firmware and letting the SoC run on REF_CLK is
-	 * fixing the problem. Corresponding firmware change is also needed
-	 * to set the clock source once the target is initialized.
-	 */
-	if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_SKIP_CLOCK_INIT,
-		     ar->running_fw->fw_file.fw_features)) {
-		status = ath10k_bmi_write32(ar, hi_skip_clock_init, 1);
-		if (status) {
-			ath10k_err(ar, "could not write to skip_clock_init: %d\n",
-				   status);
+		status = ath10k_download_cal_data(ar);
+		if (status)
 			goto err;
+
+		/* Some of of qca988x solutions are having global reset issue
+		 * during target initialization. Bypassing PLL setting before
+		 * downloading firmware and letting the SoC run on REF_CLK is
+		 * fixing the problem. Corresponding firmware change is also
+		 * needed to set the clock source once the target is
+		 * initialized.
+		 */
+		if (test_bit(ATH10K_FW_FEATURE_SUPPORTS_SKIP_CLOCK_INIT,
+			     ar->running_fw->fw_file.fw_features)) {
+			status = ath10k_bmi_write32(ar, hi_skip_clock_init, 1);
+			if (status) {
+				ath10k_err(ar, "could not write to skip_clock_init: %d\n",
+					   status);
+				goto err;
+			}
 		}
-	}
 
-	status = ath10k_download_fw(ar);
-	if (status)
-		goto err;
+		status = ath10k_download_fw(ar);
+		if (status)
+			goto err;
 
-	status = ath10k_init_uart(ar);
-	if (status)
-		goto err;
+		status = ath10k_init_uart(ar);
+		if (status)
+			goto err;
 
-	if (ar->hif.bus == ATH10K_BUS_SDIO)
-		ath10k_init_sdio(ar);
+		if (ar->hif.bus == ATH10K_BUS_SDIO)
+			ath10k_init_sdio(ar);
+	}
 
 	ar->htc.htc_ops.target_send_suspend_complete =
 		ath10k_send_suspend_complete;
@@ -2126,9 +2131,12 @@ int ath10k_core_start(struct ath10k *ar, enum ath10k_firmware_mode mode,
 		goto err;
 	}
 
-	status = ath10k_bmi_done(ar);
-	if (status)
-		goto err;
+	if (!test_bit(ATH10K_FW_FEATURE_NON_BMI,
+		      ar->running_fw->fw_file.fw_features)) {
+		status = ath10k_bmi_done(ar);
+		if (status)
+			goto err;
+	}
 
 	status = ath10k_wmi_attach(ar);
 	if (status) {
@@ -2371,19 +2379,34 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
 		return ret;
 	}
 
-	memset(&target_info, 0, sizeof(target_info));
-	if (ar->hif.bus == ATH10K_BUS_SDIO)
+	switch (ar->hif.bus) {
+	case ATH10K_BUS_SDIO:
+		memset(&target_info, 0, sizeof(target_info));
 		ret = ath10k_bmi_get_target_info_sdio(ar, &target_info);
-	else
+		if (ret) {
+			ath10k_err(ar, "could not get target info (%d)\n", ret);
+			goto err_power_down;
+		}
+		ar->target_version = target_info.version;
+		ar->hw->wiphy->hw_version = target_info.version;
+		break;
+	case ATH10K_BUS_PCI:
+	case ATH10K_BUS_AHB:
+		memset(&target_info, 0, sizeof(target_info));
 		ret = ath10k_bmi_get_target_info(ar, &target_info);
-	if (ret) {
-		ath10k_err(ar, "could not get target info (%d)\n", ret);
-		goto err_power_down;
+		if (ret) {
+			ath10k_err(ar, "could not get target info (%d)\n", ret);
+			goto err_power_down;
+		}
+		ar->target_version = target_info.version;
+		ar->hw->wiphy->hw_version = target_info.version;
+		break;
+	case ATH10K_BUS_SNOC:
+		break;
+	default:
+		ath10k_err(ar, "incorrect hif bus type: %d\n", ar->hif.bus);
 	}
 
-	ar->target_version = target_info.version;
-	ar->hw->wiphy->hw_version = target_info.version;
-
 	ret = ath10k_init_hw_params(ar);
 	if (ret) {
 		ath10k_err(ar, "could not get hw params (%d)\n", ret);
@@ -2403,37 +2426,40 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
 
 	ath10k_debug_print_hwfw_info(ar);
 
-	ret = ath10k_core_pre_cal_download(ar);
-	if (ret) {
-		/* pre calibration data download is not necessary
-		 * for all the chipsets. Ignore failures and continue.
-		 */
-		ath10k_dbg(ar, ATH10K_DBG_BOOT,
-			   "could not load pre cal data: %d\n", ret);
-	}
+	if (!test_bit(ATH10K_FW_FEATURE_NON_BMI,
+		      ar->normal_mode_fw.fw_file.fw_features)) {
+		ret = ath10k_core_pre_cal_download(ar);
+		if (ret) {
+			/* pre calibration data download is not necessary
+			 * for all the chipsets. Ignore failures and continue.
+			 */
+			ath10k_dbg(ar, ATH10K_DBG_BOOT,
+				   "could not load pre cal data: %d\n", ret);
+		}
 
-	ret = ath10k_core_get_board_id_from_otp(ar);
-	if (ret && ret != -EOPNOTSUPP) {
-		ath10k_err(ar, "failed to get board id from otp: %d\n",
-			   ret);
-		goto err_free_firmware_files;
-	}
+		ret = ath10k_core_get_board_id_from_otp(ar);
+		if (ret && ret != -EOPNOTSUPP) {
+			ath10k_err(ar, "failed to get board id from otp: %d\n",
+				   ret);
+			goto err_free_firmware_files;
+		}
 
-	ret = ath10k_core_check_smbios(ar);
-	if (ret)
-		ath10k_dbg(ar, ATH10K_DBG_BOOT, "SMBIOS bdf variant name not set.\n");
+		ret = ath10k_core_check_smbios(ar);
+		if (ret)
+			ath10k_dbg(ar, ATH10K_DBG_BOOT, "SMBIOS bdf variant name not set.\n");
 
-	ret = ath10k_core_check_dt(ar);
-	if (ret)
-		ath10k_dbg(ar, ATH10K_DBG_BOOT, "DT bdf variant name not set.\n");
+		ret = ath10k_core_check_dt(ar);
+		if (ret)
+			ath10k_dbg(ar, ATH10K_DBG_BOOT, "DT bdf variant name not set.\n");
 
-	ret = ath10k_core_fetch_board_file(ar);
-	if (ret) {
-		ath10k_err(ar, "failed to fetch board file: %d\n", ret);
-		goto err_free_firmware_files;
-	}
+		ret = ath10k_core_fetch_board_file(ar);
+		if (ret) {
+			ath10k_err(ar, "failed to fetch board file: %d\n", ret);
+			goto err_free_firmware_files;
+		}
 
-	ath10k_debug_print_board_info(ar);
+		ath10k_debug_print_board_info(ar);
+	}
 
 	ret = ath10k_core_init_firmware_features(ar);
 	if (ret) {
@@ -2442,11 +2468,15 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
 		goto err_free_firmware_files;
 	}
 
-	ret = ath10k_swap_code_seg_init(ar, &ar->normal_mode_fw.fw_file);
-	if (ret) {
-		ath10k_err(ar, "failed to initialize code swap segment: %d\n",
-			   ret);
-		goto err_free_firmware_files;
+	if (!test_bit(ATH10K_FW_FEATURE_NON_BMI,
+		      ar->normal_mode_fw.fw_file.fw_features)) {
+		ret = ath10k_swap_code_seg_init(ar,
+						&ar->normal_mode_fw.fw_file);
+		if (ret) {
+			ath10k_err(ar, "failed to initialize code swap segment: %d\n",
+				   ret);
+			goto err_free_firmware_files;
+		}
 	}
 
 	mutex_lock(&ar->conf_mutex);
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 81285ab30a7d..b747ef52c186 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -618,6 +618,9 @@ enum ath10k_fw_features {
 	/* Firmware allows management tx by reference instead of by value. */
 	ATH10K_FW_FEATURE_MGMT_TX_BY_REF = 18,
 
+	/* Firmware load is done externally, not by bmi */
+	ATH10K_FW_FEATURE_NON_BMI = 19,
+
 	/* keep last */
 	ATH10K_FW_FEATURE_COUNT,
 };
-- 
2.11.0