ath11k: use remoteproc only with AHB devices

QCA6390 and other PCI devices use MHI based firmware loading and do not use
remoteproc, so enable it only for AHB devices.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.1.0.1-01238-QCAHKSWPL_SILICONZ-2

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1597309466-19688-11-git-send-email-kvalo@codeaurora.org

drivers/net/wireless/ath/ath11k/Kconfig

@@ -2,7 +2,6 @@
 config ATH11K
 	tristate "Qualcomm Technologies 802.11ax chipset support"
 	depends on MAC80211 && HAS_DMA
-	depends on REMOTEPROC
 	depends on CRYPTO_MICHAEL_MIC
 	select ATH_COMMON
 	select QCOM_QMI_HELPERS
@@ -15,6 +14,7 @@ config ATH11K
 config ATH11K_AHB
 	tristate "Atheros ath11k AHB support"
 	depends on ATH11K
+	depends on REMOTEPROC
 	help
 	  This module adds support for AHB bus
 

drivers/net/wireless/ath/ath11k/ahb.c

@@ -25,6 +25,10 @@ static const struct of_device_id ath11k_ahb_of_match[] = {
 
 MODULE_DEVICE_TABLE(of, ath11k_ahb_of_match);
 
+static const struct ath11k_bus_params ath11k_ahb_bus_params = {
+	.mhi_support = false,
+};
+
 /* Target firmware's Copy Engine configuration. */
 static const struct ce_pipe_config target_ce_config_wlan[] = {
 	/* CE0: host->target HTC control and raw streams */
@@ -855,7 +859,7 @@ static int ath11k_ahb_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ab = ath11k_core_alloc(&pdev->dev, 0, ATH11K_BUS_AHB);
+	ab = ath11k_core_alloc(&pdev->dev, 0, ATH11K_BUS_AHB, &ath11k_ahb_bus_params);
 	if (!ab) {
 		dev_err(&pdev->dev, "failed to allocate ath11k base\n");
 		return -ENOMEM;

drivers/net/wireless/ath/ath11k/core.c

@@ -756,12 +756,14 @@ int ath11k_core_pre_init(struct ath11k_base *ab)
 }
 EXPORT_SYMBOL(ath11k_core_pre_init);
 
-int ath11k_core_init(struct ath11k_base *ab)
+static int ath11k_core_get_rproc(struct ath11k_base *ab)
 {
 	struct device *dev = ab->dev;
 	struct rproc *prproc;
 	phandle rproc_phandle;
-	int ret;
+
+	if (ab->bus_params.mhi_support)
+		return 0;
 
 	if (of_property_read_u32(dev->of_node, "qcom,rproc", &rproc_phandle)) {
 		ath11k_err(ab, "failed to get q6_rproc handle\n");
@@ -775,6 +777,25 @@ int ath11k_core_init(struct ath11k_base *ab)
 	}
 	ab->tgt_rproc = prproc;
 
+	return 0;
+}
+
+int ath11k_core_init(struct ath11k_base *ab)
+{
+	int ret;
+
+	ret = ath11k_core_get_rproc(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to get rproc: %d\n", ret);
+		return ret;
+	}
+
+	ret = ath11k_init_hw_params(ab);
+	if (ret) {
+		ath11k_err(ab, "failed to get hw params %d\n", ret);
+		return ret;
+	}
+
 	ret = ath11k_core_soc_create(ab);
 	if (ret) {
 		ath11k_err(ab, "failed to create soc core: %d\n", ret);
@@ -807,7 +828,8 @@ void ath11k_core_free(struct ath11k_base *ab)
 EXPORT_SYMBOL(ath11k_core_free);
 
 struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size,
-				      enum ath11k_bus bus)
+				      enum ath11k_bus bus,
+				      const struct ath11k_bus_params *bus_params)
 {
 	struct ath11k_base *ab;
 
@@ -830,6 +852,7 @@ struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size,
 	INIT_WORK(&ab->restart_work, ath11k_core_restart);
 	timer_setup(&ab->rx_replenish_retry, ath11k_ce_rx_replenish_retry, 0);
 	ab->dev = dev;
+	ab->bus_params = *bus_params;
 
 	return ab;
 

drivers/net/wireless/ath/ath11k/core.h

@@ -580,6 +580,10 @@ struct ath11k_board_data {
 	size_t len;
 };
 
+struct ath11k_bus_params {
+	bool mhi_support;
+};
+
 /* IPQ8074 HW channel counters frequency value in hertz */
 #define IPQ8074_CC_FREQ_HERTZ 320000
 
@@ -668,7 +672,10 @@ struct ath11k_base {
 	u32 ext_service_bitmap[WMI_SERVICE_EXT_BM_SIZE];
 	bool pdevs_macaddr_valid;
 	int bd_api;
+
 	struct ath11k_hw_params hw_params;
+	struct ath11k_bus_params bus_params;
+
 	const struct firmware *cal_file;
 
 	/* Below regd's are protected by ab->data_lock */
@@ -845,7 +852,8 @@ int ath11k_core_pre_init(struct ath11k_base *ab);
 int ath11k_core_init(struct ath11k_base *ath11k);
 void ath11k_core_deinit(struct ath11k_base *ath11k);
 struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size,
-				      enum ath11k_bus bus);
+				      enum ath11k_bus bus,
+				      const struct ath11k_bus_params *bus_params);
 void ath11k_core_free(struct ath11k_base *ath11k);
 int ath11k_core_fetch_bdf(struct ath11k_base *ath11k,
 			  struct ath11k_board_data *bd);

drivers/net/wireless/ath/ath11k/pci.c

@@ -27,6 +27,10 @@ static const struct pci_device_id ath11k_pci_id_table[] = {
 
 MODULE_DEVICE_TABLE(pci, ath11k_pci_id_table);
 
+static const struct ath11k_bus_params ath11k_pci_bus_params = {
+	.mhi_support = true,
+};
+
 static const struct ath11k_msi_config msi_config = {
 	.total_vectors = 32,
 	.total_users = 4,
@@ -594,7 +598,8 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 		return -ENOTSUPP;
 	}
 
-	ab = ath11k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH11K_BUS_PCI);
+	ab = ath11k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH11K_BUS_PCI,
+			       &ath11k_pci_bus_params);
 	if (!ab) {
 		dev_err(&pdev->dev, "failed to allocate ath11k base\n");
 		return -ENOMEM;