Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git

ath.git patches for v5.17. Major changes:

ath10k

* fetch (pre-)calibration data via nvmem subsystem

ath11k

* enable 802.11 power save mode in station mode for qca6390 and wcn6855

* trace log support

* proper board file detection for WCN6855 based on PCI ids

* BSS color change support

drivers/net/wireless/ath/ar5523/ar5523.c

@@ -153,6 +153,10 @@ static void ar5523_cmd_rx_cb(struct urb *urb)
 			ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START");
 			return;
 		}
+		if (!cmd->odata) {
+			ar5523_err(ar, "Unexpected WDCMSG_TARGET_START reply");
+			return;
+		}
 		memcpy(cmd->odata, hdr + 1, sizeof(u32));
 		cmd->olen = sizeof(u32);
 		cmd->res = 0;

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

@@ -12,6 +12,7 @@
 #include <linux/dmi.h>
 #include <linux/ctype.h>
 #include <linux/pm_qos.h>
+#include <linux/nvmem-consumer.h>
 #include <asm/byteorder.h>
 
 #include "core.h"
@@ -935,7 +936,8 @@ static int ath10k_core_get_board_id_from_otp(struct ath10k *ar)
 	}
 
 	if (ar->cal_mode == ATH10K_PRE_CAL_MODE_DT ||
-	    ar->cal_mode == ATH10K_PRE_CAL_MODE_FILE)
+	    ar->cal_mode == ATH10K_PRE_CAL_MODE_FILE ||
+	    ar->cal_mode == ATH10K_PRE_CAL_MODE_NVMEM)
 		bmi_board_id_param = BMI_PARAM_GET_FLASH_BOARD_ID;
 	else
 		bmi_board_id_param = BMI_PARAM_GET_EEPROM_BOARD_ID;
@@ -1726,7 +1728,8 @@ static int ath10k_download_and_run_otp(struct ath10k *ar)
 
 	/* As of now pre-cal is valid for 10_4 variants */
 	if (ar->cal_mode == ATH10K_PRE_CAL_MODE_DT ||
-	    ar->cal_mode == ATH10K_PRE_CAL_MODE_FILE)
+	    ar->cal_mode == ATH10K_PRE_CAL_MODE_FILE ||
+	    ar->cal_mode == ATH10K_PRE_CAL_MODE_NVMEM)
 		bmi_otp_exe_param = BMI_PARAM_FLASH_SECTION_ALL;
 
 	ret = ath10k_bmi_execute(ar, address, bmi_otp_exe_param, &result);
@@ -1853,6 +1856,39 @@ static int ath10k_download_cal_eeprom(struct ath10k *ar)
 	return ret;
 }
 
+static int ath10k_download_cal_nvmem(struct ath10k *ar, const char *cell_name)
+{
+	struct nvmem_cell *cell;
+	void *buf;
+	size_t len;
+	int ret;
+
+	cell = devm_nvmem_cell_get(ar->dev, cell_name);
+	if (IS_ERR(cell)) {
+		ret = PTR_ERR(cell);
+		return ret;
+	}
+
+	buf = nvmem_cell_read(cell, &len);
+	if (IS_ERR(buf))
+		return PTR_ERR(buf);
+
+	if (ar->hw_params.cal_data_len != len) {
+		kfree(buf);
+		ath10k_warn(ar, "invalid calibration data length in nvmem-cell '%s': %zu != %u\n",
+			    cell_name, len, ar->hw_params.cal_data_len);
+		return -EMSGSIZE;
+	}
+
+	ret = ath10k_download_board_data(ar, buf, len);
+	kfree(buf);
+	if (ret)
+		ath10k_warn(ar, "failed to download calibration data from nvmem-cell '%s': %d\n",
+			    cell_name, ret);
+
+	return ret;
+}
+
 int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name,
 				     struct ath10k_fw_file *fw_file)
 {
@@ -2087,6 +2123,18 @@ static int ath10k_core_pre_cal_download(struct ath10k *ar)
 {
 	int ret;
 
+	ret = ath10k_download_cal_nvmem(ar, "pre-calibration");
+	if (ret == 0) {
+		ar->cal_mode = ATH10K_PRE_CAL_MODE_NVMEM;
+		goto success;
+	} else if (ret == -EPROBE_DEFER) {
+		return ret;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_BOOT,
+		   "boot did not find a pre-calibration nvmem-cell, try file next: %d\n",
+		   ret);
+
 	ret = ath10k_download_cal_file(ar, ar->pre_cal_file);
 	if (ret == 0) {
 		ar->cal_mode = ATH10K_PRE_CAL_MODE_FILE;
@@ -2153,6 +2201,18 @@ static int ath10k_download_cal_data(struct ath10k *ar)
 		   "pre cal download procedure failed, try cal file: %d\n",
 		   ret);
 
+	ret = ath10k_download_cal_nvmem(ar, "calibration");
+	if (ret == 0) {
+		ar->cal_mode = ATH10K_CAL_MODE_NVMEM;
+		goto done;
+	} else if (ret == -EPROBE_DEFER) {
+		return ret;
+	}
+
+	ath10k_dbg(ar, ATH10K_DBG_BOOT,
+		   "boot did not find a calibration nvmem-cell, try file next: %d\n",
+		   ret);
+
 	ret = ath10k_download_cal_file(ar, ar->cal_file);
 	if (ret == 0) {
 		ar->cal_mode = ATH10K_CAL_MODE_FILE;

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

@@ -877,8 +877,10 @@ enum ath10k_cal_mode {
 	ATH10K_CAL_MODE_FILE,
 	ATH10K_CAL_MODE_OTP,
 	ATH10K_CAL_MODE_DT,
+	ATH10K_CAL_MODE_NVMEM,
 	ATH10K_PRE_CAL_MODE_FILE,
 	ATH10K_PRE_CAL_MODE_DT,
+	ATH10K_PRE_CAL_MODE_NVMEM,
 	ATH10K_CAL_MODE_EEPROM,
 };
 
@@ -898,10 +900,14 @@ static inline const char *ath10k_cal_mode_str(enum ath10k_cal_mode mode)
 		return "otp";
 	case ATH10K_CAL_MODE_DT:
 		return "dt";
+	case ATH10K_CAL_MODE_NVMEM:
+		return "nvmem";
 	case ATH10K_PRE_CAL_MODE_FILE:
 		return "pre-cal-file";
 	case ATH10K_PRE_CAL_MODE_DT:
 		return "pre-cal-dt";
+	case ATH10K_PRE_CAL_MODE_NVMEM:
+		return "pre-cal-nvmem";
 	case ATH10K_CAL_MODE_EEPROM:
 		return "eeprom";
 	}

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

@@ -14,6 +14,7 @@ const struct ce_attr ath11k_host_ce_config_ipq8074[] = {
 		.src_nentries = 16,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE1: target->host HTT + HTC control */
@@ -40,6 +41,7 @@ const struct ce_attr ath11k_host_ce_config_ipq8074[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE4: host->target HTT */
@@ -73,11 +75,12 @@ const struct ce_attr ath11k_host_ce_config_ipq8074[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE8: target autonomous hif_memcpy */
 	{
-		.flags = CE_ATTR_FLAGS,
+		.flags = CE_ATTR_FLAGS | CE_ATTR_DIS_INTR,
 		.src_nentries = 0,
 		.src_sz_max = 0,
 		.dest_nentries = 0,
@@ -89,6 +92,7 @@ const struct ce_attr ath11k_host_ce_config_ipq8074[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE10: target->host HTT */
@@ -142,6 +146,7 @@ const struct ce_attr ath11k_host_ce_config_qca6390[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE4: host->target HTT */
@@ -175,6 +180,7 @@ const struct ce_attr ath11k_host_ce_config_qca6390[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE8: target autonomous hif_memcpy */
@@ -220,6 +226,7 @@ const struct ce_attr ath11k_host_ce_config_qcn9074[] = {
 		.src_nentries = 32,
 		.src_sz_max = 2048,
 		.dest_nentries = 0,
+		.send_cb = ath11k_htc_tx_completion_handler,
 	},
 
 	/* CE4: host->target HTT */
@@ -489,18 +496,32 @@ static struct sk_buff *ath11k_ce_completed_send_next(struct ath11k_ce_pipe *pipe
 	return skb;
 }
 
-static void ath11k_ce_send_done_cb(struct ath11k_ce_pipe *pipe)
+static void ath11k_ce_tx_process_cb(struct ath11k_ce_pipe *pipe)
 {
 	struct ath11k_base *ab = pipe->ab;
 	struct sk_buff *skb;
+	struct sk_buff_head list;
 
+	__skb_queue_head_init(&list);
 	while (!IS_ERR(skb = ath11k_ce_completed_send_next(pipe))) {
 		if (!skb)
 			continue;
 
 		dma_unmap_single(ab->dev, ATH11K_SKB_CB(skb)->paddr, skb->len,
 				 DMA_TO_DEVICE);
-		dev_kfree_skb_any(skb);
+
+		if ((!pipe->send_cb) || ab->hw_params.credit_flow) {
+			dev_kfree_skb_any(skb);
+			continue;
+		}
+
+		__skb_queue_tail(&list, skb);
+	}
+
+	while ((skb = __skb_dequeue(&list))) {
+		ath11k_dbg(ab, ATH11K_DBG_AHB, "tx ce pipe %d len %d\n",
+			   pipe->pipe_num, skb->len);
+		pipe->send_cb(ab, skb);
 	}
 }
 
@@ -636,7 +657,7 @@ static int ath11k_ce_alloc_pipe(struct ath11k_base *ab, int ce_id)
 	pipe->attr_flags = attr->flags;
 
 	if (attr->src_nentries) {
-		pipe->send_cb = ath11k_ce_send_done_cb;
+		pipe->send_cb = attr->send_cb;
 		nentries = roundup_pow_of_two(attr->src_nentries);
 		desc_sz = ath11k_hal_ce_get_desc_size(HAL_CE_DESC_SRC);
 		ring = ath11k_ce_alloc_ring(ab, nentries, desc_sz);
@@ -667,9 +688,10 @@ static int ath11k_ce_alloc_pipe(struct ath11k_base *ab, int ce_id)
 void ath11k_ce_per_engine_service(struct ath11k_base *ab, u16 ce_id)
 {
 	struct ath11k_ce_pipe *pipe = &ab->ce.ce_pipe[ce_id];
+	const struct ce_attr *attr = &ab->hw_params.host_ce_config[ce_id];
 
-	if (pipe->send_cb)
-		pipe->send_cb(pipe);
+	if (attr->src_nentries)
+		ath11k_ce_tx_process_cb(pipe);
 
 	if (pipe->recv_cb)
 		ath11k_ce_recv_process_cb(pipe);
@@ -678,9 +700,10 @@ void ath11k_ce_per_engine_service(struct ath11k_base *ab, u16 ce_id)
 void ath11k_ce_poll_send_completed(struct ath11k_base *ab, u8 pipe_id)
 {
 	struct ath11k_ce_pipe *pipe = &ab->ce.ce_pipe[pipe_id];
+	const struct ce_attr *attr =  &ab->hw_params.host_ce_config[pipe_id];
 
-	if ((pipe->attr_flags & CE_ATTR_DIS_INTR) && pipe->send_cb)
-		pipe->send_cb(pipe);
+	if ((pipe->attr_flags & CE_ATTR_DIS_INTR) && attr->src_nentries)
+		ath11k_ce_tx_process_cb(pipe);
 }
 EXPORT_SYMBOL(ath11k_ce_per_engine_service);
 
@@ -953,6 +976,7 @@ int ath11k_ce_init_pipes(struct ath11k_base *ab)
 void ath11k_ce_free_pipes(struct ath11k_base *ab)
 {
 	struct ath11k_ce_pipe *pipe;
+	struct ath11k_ce_ring *ce_ring;
 	int desc_sz;
 	int i;
 
@@ -964,22 +988,24 @@ void ath11k_ce_free_pipes(struct ath11k_base *ab)
 
 		if (pipe->src_ring) {
 			desc_sz = ath11k_hal_ce_get_desc_size(HAL_CE_DESC_SRC);
+			ce_ring = pipe->src_ring;
 			dma_free_coherent(ab->dev,
 					  pipe->src_ring->nentries * desc_sz +
 					  CE_DESC_RING_ALIGN,
-					  pipe->src_ring->base_addr_owner_space,
-					  pipe->src_ring->base_addr_ce_space);
+					  ce_ring->base_addr_owner_space_unaligned,
+					  ce_ring->base_addr_ce_space_unaligned);
 			kfree(pipe->src_ring);
 			pipe->src_ring = NULL;
 		}
 
 		if (pipe->dest_ring) {
 			desc_sz = ath11k_hal_ce_get_desc_size(HAL_CE_DESC_DST);
+			ce_ring = pipe->dest_ring;
 			dma_free_coherent(ab->dev,
 					  pipe->dest_ring->nentries * desc_sz +
 					  CE_DESC_RING_ALIGN,
-					  pipe->dest_ring->base_addr_owner_space,
-					  pipe->dest_ring->base_addr_ce_space);
+					  ce_ring->base_addr_owner_space_unaligned,
+					  ce_ring->base_addr_ce_space_unaligned);
 			kfree(pipe->dest_ring);
 			pipe->dest_ring = NULL;
 		}
@@ -987,11 +1013,12 @@ void ath11k_ce_free_pipes(struct ath11k_base *ab)
 		if (pipe->status_ring) {
 			desc_sz =
 			  ath11k_hal_ce_get_desc_size(HAL_CE_DESC_DST_STATUS);
+			ce_ring = pipe->status_ring;
 			dma_free_coherent(ab->dev,
 					  pipe->status_ring->nentries * desc_sz +
 					  CE_DESC_RING_ALIGN,
-					  pipe->status_ring->base_addr_owner_space,
-					  pipe->status_ring->base_addr_ce_space);
+					  ce_ring->base_addr_owner_space_unaligned,
+					  ce_ring->base_addr_ce_space_unaligned);
 			kfree(pipe->status_ring);
 			pipe->status_ring = NULL;
 		}

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

@@ -101,6 +101,7 @@ struct ce_attr {
 	unsigned int dest_nentries;
 
 	void (*recv_cb)(struct ath11k_base *, struct sk_buff *);
+	void (*send_cb)(struct ath11k_base *, struct sk_buff *);
 };
 
 #define CE_DESC_RING_ALIGN 8
@@ -154,7 +155,7 @@ struct ath11k_ce_pipe {
 	unsigned int buf_sz;
 	unsigned int rx_buf_needed;
 
-	void (*send_cb)(struct ath11k_ce_pipe *);
+	void (*send_cb)(struct ath11k_base *, struct sk_buff *);
 	void (*recv_cb)(struct ath11k_base *, struct sk_buff *);
 
 	struct tasklet_struct intr_tq;

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

@@ -76,12 +76,17 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = true,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
 		.fix_l1ss = true,
+		.credit_flow = false,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX,
 		.hal_params = &ath11k_hw_hal_params_ipq8074,
+		.supports_dynamic_smps_6ghz = false,
+		.alloc_cacheable_memory = true,
+		.wakeup_mhi = false,
 	},
 	{
 		.hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -125,12 +130,17 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = true,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
 		.fix_l1ss = true,
+		.credit_flow = false,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX,
 		.hal_params = &ath11k_hw_hal_params_ipq8074,
+		.supports_dynamic_smps_6ghz = false,
+		.alloc_cacheable_memory = true,
+		.wakeup_mhi = false,
 	},
 	{
 		.name = "qca6390 hw2.0",
@@ -173,12 +183,17 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = false,
 		.supports_shadow_regs = true,
 		.idle_ps = true,
+		.supports_sta_ps = true,
 		.cold_boot_calib = false,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
 		.fix_l1ss = true,
+		.credit_flow = true,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX_QCA6390,
 		.hal_params = &ath11k_hw_hal_params_qca6390,
+		.supports_dynamic_smps_6ghz = false,
+		.alloc_cacheable_memory = false,
+		.wakeup_mhi = true,
 	},
 	{
 		.name = "qcn9074 hw1.0",
@@ -221,12 +236,17 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = false,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_qcn9074),
 		.fix_l1ss = true,
+		.credit_flow = false,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX,
 		.hal_params = &ath11k_hw_hal_params_ipq8074,
+		.supports_dynamic_smps_6ghz = true,
+		.alloc_cacheable_memory = true,
+		.wakeup_mhi = false,
 	},
 	{
 		.name = "wcn6855 hw2.0",
@@ -269,12 +289,17 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = false,
 		.supports_shadow_regs = true,
 		.idle_ps = true,
+		.supports_sta_ps = true,
 		.cold_boot_calib = false,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
 		.fix_l1ss = false,
+		.credit_flow = true,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX_QCA6390,
 		.hal_params = &ath11k_hw_hal_params_qca6390,
+		.supports_dynamic_smps_6ghz = false,
+		.alloc_cacheable_memory = false,
+		.wakeup_mhi = true,
 	},
 };
 
@@ -392,11 +417,26 @@ static int ath11k_core_create_board_name(struct ath11k_base *ab, char *name,
 		scnprintf(variant, sizeof(variant), ",variant=%s",
 			  ab->qmi.target.bdf_ext);
 
-	scnprintf(name, name_len,
-		  "bus=%s,qmi-chip-id=%d,qmi-board-id=%d%s",
-		  ath11k_bus_str(ab->hif.bus),
-		  ab->qmi.target.chip_id,
-		  ab->qmi.target.board_id, variant);
+	switch (ab->id.bdf_search) {
+	case ATH11K_BDF_SEARCH_BUS_AND_BOARD:
+		scnprintf(name, name_len,
+			  "bus=%s,vendor=%04x,device=%04x,subsystem-vendor=%04x,subsystem-device=%04x,qmi-chip-id=%d,qmi-board-id=%d%s",
+			  ath11k_bus_str(ab->hif.bus),
+			  ab->id.vendor, ab->id.device,
+			  ab->id.subsystem_vendor,
+			  ab->id.subsystem_device,
+			  ab->qmi.target.chip_id,
+			  ab->qmi.target.board_id,
+			  variant);
+		break;
+	default:
+		scnprintf(name, name_len,
+			  "bus=%s,qmi-chip-id=%d,qmi-board-id=%d%s",
+			  ath11k_bus_str(ab->hif.bus),
+			  ab->qmi.target.chip_id,
+			  ab->qmi.target.board_id, variant);
+		break;
+	}
 
 	ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot using board name '%s'\n", name);
 
@@ -633,7 +673,7 @@ static int ath11k_core_fetch_board_data_api_1(struct ath11k_base *ab,
 	return 0;
 }
 
-#define BOARD_NAME_SIZE 100
+#define BOARD_NAME_SIZE 200
 int ath11k_core_fetch_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd)
 {
 	char boardname[BOARD_NAME_SIZE];

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

@@ -47,6 +47,11 @@ enum ath11k_supported_bw {
 	ATH11K_BW_160	= 3,
 };
 
+enum ath11k_bdf_search {
+	ATH11K_BDF_SEARCH_DEFAULT,
+	ATH11K_BDF_SEARCH_BUS_AND_BOARD,
+};
+
 enum wme_ac {
 	WME_AC_BE,
 	WME_AC_BK,
@@ -240,6 +245,7 @@ struct ath11k_vif {
 	bool is_started;
 	bool is_up;
 	bool spectral_enabled;
+	bool ps;
 	u32 aid;
 	u8 bssid[ETH_ALEN];
 	struct cfg80211_bitrate_mask bitrate_mask;
@@ -249,6 +255,8 @@ struct ath11k_vif {
 	int txpower;
 	bool rsnie_present;
 	bool wpaie_present;
+	bool bcca_zero_sent;
+	bool do_not_send_tmpl;
 	struct ieee80211_chanctx_conf chanctx;
 };
 
@@ -759,6 +767,14 @@ struct ath11k_base {
 
 	struct completion htc_suspend;
 
+	struct {
+		enum ath11k_bdf_search bdf_search;
+		u32 vendor;
+		u32 device;
+		u32 subsystem_vendor;
+		u32 subsystem_device;
+	} id;
+
 	/* must be last */
 	u8 drv_priv[0] __aligned(sizeof(void *));
 };

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

@@ -87,17 +87,23 @@ static int ath11k_dbring_fill_bufs(struct ath11k *ar,
 	req_entries = min(num_free, ring->bufs_max);
 	num_remain = req_entries;
 	align = ring->buf_align;
-	size = sizeof(*buff) + ring->buf_sz + align - 1;
+	size = ring->buf_sz + align - 1;
 
 	while (num_remain > 0) {
-		buff = kzalloc(size, GFP_ATOMIC);
+		buff = kzalloc(sizeof(*buff), GFP_ATOMIC);
 		if (!buff)
 			break;
 
+		buff->payload = kzalloc(size, GFP_ATOMIC);
+		if (!buff->payload) {
+			kfree(buff);
+			break;
+		}
 		ret = ath11k_dbring_bufs_replenish(ar, ring, buff);
 		if (ret) {
 			ath11k_warn(ar->ab, "failed to replenish db ring num_remain %d req_ent %d\n",
 				    num_remain, req_entries);
+			kfree(buff->payload);
 			kfree(buff);
 			break;
 		}
@@ -282,7 +288,7 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab,
 
 	srng = &ab->hal.srng_list[ring->refill_srng.ring_id];
 	num_entry = ev->fixed.num_buf_release_entry;
-	size = sizeof(*buff) + ring->buf_sz + ring->buf_align - 1;
+	size = ring->buf_sz + ring->buf_align - 1;
 	num_buff_reaped = 0;
 
 	spin_lock_bh(&srng->lock);
@@ -319,7 +325,8 @@ int ath11k_dbring_buffer_release_event(struct ath11k_base *ab,
 			ring->handler(ar, &handler_data);
 		}
 
-		memset(buff, 0, size);
+		buff->paddr = 0;
+		memset(buff->payload, 0, size);
 		ath11k_dbring_bufs_replenish(ar, ring, buff);
 	}
 
@@ -346,6 +353,7 @@ void ath11k_dbring_buf_cleanup(struct ath11k *ar, struct ath11k_dbring *ring)
 		idr_remove(&ring->bufs_idr, buf_id);
 		dma_unmap_single(ar->ab->dev, buff->paddr,
 				 ring->buf_sz, DMA_FROM_DEVICE);
+		kfree(buff->payload);
 		kfree(buff);
 	}
 

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

@@ -13,7 +13,7 @@
 
 struct ath11k_dbring_element {
 	dma_addr_t paddr;
-	u8 payload[0];
+	u8 *payload;
 };
 
 struct ath11k_dbring_data {

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

@@ -17,7 +17,7 @@ void ath11k_info(struct ath11k_base *ab, const char *fmt, ...)
 	va_start(args, fmt);
 	vaf.va = &args;
 	dev_info(ab->dev, "%pV", &vaf);
-	/* TODO: Trace the log */
+	trace_ath11k_log_info(ab, &vaf);
 	va_end(args);
 }
 EXPORT_SYMBOL(ath11k_info);
@@ -32,7 +32,7 @@ void ath11k_err(struct ath11k_base *ab, const char *fmt, ...)
 	va_start(args, fmt);
 	vaf.va = &args;
 	dev_err(ab->dev, "%pV", &vaf);
-	/* TODO: Trace the log */
+	trace_ath11k_log_err(ab, &vaf);
 	va_end(args);
 }
 EXPORT_SYMBOL(ath11k_err);
@@ -47,7 +47,7 @@ void ath11k_warn(struct ath11k_base *ab, const char *fmt, ...)
 	va_start(args, fmt);
 	vaf.va = &args;
 	dev_warn_ratelimited(ab->dev, "%pV", &vaf);
-	/* TODO: Trace the log */
+	trace_ath11k_log_warn(ab, &vaf);
 	va_end(args);
 }
 EXPORT_SYMBOL(ath11k_warn);
@@ -68,7 +68,7 @@ void __ath11k_dbg(struct ath11k_base *ab, enum ath11k_debug_mask mask,
 	if (ath11k_debug_mask & mask)
 		dev_printk(KERN_DEBUG, ab->dev, "%pV", &vaf);
 
-	/* TODO: trace log */
+	trace_ath11k_log_dbg(ab, mask, &vaf);
 
 	va_end(args);
 }
@@ -100,6 +100,10 @@ void ath11k_dbg_dump(struct ath11k_base *ab,
 			dev_printk(KERN_DEBUG, ab->dev, "%s\n", linebuf);
 		}
 	}
+
+	/* tracing code doesn't like null strings */
+	trace_ath11k_log_dbg_dump(ab, msg ? msg : "", prefix ? prefix : "",
+				  buf, len);
 }
 EXPORT_SYMBOL(ath11k_dbg_dump);
 

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

@@ -60,7 +60,8 @@ static inline void ath11k_dbg_dump(struct ath11k_base *ab,
 
 #define ath11k_dbg(ar, dbg_mask, fmt, ...)			\
 do {								\
-	if (ath11k_debug_mask & dbg_mask)			\
+	if ((ath11k_debug_mask & dbg_mask) ||			\
+	    trace_ath11k_log_dbg_enabled())			\
 		__ath11k_dbg(ar, dbg_mask, fmt, ##__VA_ARGS__);	\
 } while (0)
 

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

@@ -195,7 +195,7 @@ static int ath11k_debugfs_fw_stats_request(struct ath11k *ar,
 	 * received 'update stats' event, we keep a 3 seconds timeout in case,
 	 * fw_stats_done is not marked yet
 	 */
-	timeout = jiffies + msecs_to_jiffies(3 * HZ);
+	timeout = jiffies + msecs_to_jiffies(3 * 1000);
 
 	ath11k_debugfs_fw_stats_reset(ar);
 

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

@@ -101,8 +101,11 @@ void ath11k_dp_srng_cleanup(struct ath11k_base *ab, struct dp_srng *ring)
 	if (!ring->vaddr_unaligned)
 		return;
 
-	dma_free_coherent(ab->dev, ring->size, ring->vaddr_unaligned,
-			  ring->paddr_unaligned);
+	if (ring->cached)
+		kfree(ring->vaddr_unaligned);
+	else
+		dma_free_coherent(ab->dev, ring->size, ring->vaddr_unaligned,
+				  ring->paddr_unaligned);
 
 	ring->vaddr_unaligned = NULL;
 }
@@ -222,6 +225,7 @@ int ath11k_dp_srng_setup(struct ath11k_base *ab, struct dp_srng *ring,
 	int entry_sz = ath11k_hal_srng_get_entrysize(ab, type);
 	int max_entries = ath11k_hal_srng_get_max_entries(ab, type);
 	int ret;
+	bool cached = false;
 
 	if (max_entries < 0 || entry_sz < 0)
 		return -EINVAL;
@@ -230,9 +234,29 @@ int ath11k_dp_srng_setup(struct ath11k_base *ab, struct dp_srng *ring,
 		num_entries = max_entries;
 
 	ring->size = (num_entries * entry_sz) + HAL_RING_BASE_ALIGN - 1;
-	ring->vaddr_unaligned = dma_alloc_coherent(ab->dev, ring->size,
-						   &ring->paddr_unaligned,
-						   GFP_KERNEL);
+
+	if (ab->hw_params.alloc_cacheable_memory) {
+		/* Allocate the reo dst and tx completion rings from cacheable memory */
+		switch (type) {
+		case HAL_REO_DST:
+		case HAL_WBM2SW_RELEASE:
+			cached = true;
+			break;
+		default:
+			cached = false;
+		}
+
+		if (cached) {
+			ring->vaddr_unaligned = kzalloc(ring->size, GFP_KERNEL);
+			ring->paddr_unaligned = virt_to_phys(ring->vaddr_unaligned);
+		}
+	}
+
+	if (!cached)
+		ring->vaddr_unaligned = dma_alloc_coherent(ab->dev, ring->size,
+							   &ring->paddr_unaligned,
+							   GFP_KERNEL);
+
 	if (!ring->vaddr_unaligned)
 		return -ENOMEM;
 
@@ -292,6 +316,11 @@ int ath11k_dp_srng_setup(struct ath11k_base *ab, struct dp_srng *ring,
 		return -EINVAL;
 	}
 
+	if (cached) {
+		params.flags |= HAL_SRNG_FLAGS_CACHED;
+		ring->cached = 1;
+	}
+
 	ret = ath11k_hal_srng_setup(ab, type, ring_num, mac_id, &params);
 	if (ret < 0) {
 		ath11k_warn(ab, "failed to setup srng: %d ring_id %d\n",
@@ -742,13 +771,12 @@ int ath11k_dp_service_srng(struct ath11k_base *ab,
 	const struct ath11k_hw_hal_params *hal_params;
 	int grp_id = irq_grp->grp_id;
 	int work_done = 0;
-	int i = 0, j;
+	int i, j;
 	int tot_work_done = 0;
 
-	while (ab->hw_params.ring_mask->tx[grp_id] >> i) {
-		if (ab->hw_params.ring_mask->tx[grp_id] & BIT(i))
-			ath11k_dp_tx_completion_handler(ab, i);
-		i++;
+	if (ab->hw_params.ring_mask->tx[grp_id]) {
+		i = __fls(ab->hw_params.ring_mask->tx[grp_id]);
+		ath11k_dp_tx_completion_handler(ab, i);
 	}
 
 	if (ab->hw_params.ring_mask->rx_err[grp_id]) {

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

@@ -64,6 +64,7 @@ struct dp_srng {
 	dma_addr_t paddr;
 	int size;
 	u32 ring_id;
+	u8 cached;
 };
 
 struct dp_rxdma_ring {
@@ -517,7 +518,8 @@ struct htt_ppdu_stats_cfg_cmd {
 } __packed;
 
 #define HTT_PPDU_STATS_CFG_MSG_TYPE		GENMASK(7, 0)
-#define HTT_PPDU_STATS_CFG_PDEV_ID		GENMASK(15, 8)
+#define HTT_PPDU_STATS_CFG_SOC_STATS		BIT(8)
+#define HTT_PPDU_STATS_CFG_PDEV_ID		GENMASK(15, 9)
 #define HTT_PPDU_STATS_CFG_TLV_TYPE_BITMASK	GENMASK(31, 16)
 
 enum htt_ppdu_stats_tag_type {

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

@@ -95,11 +95,11 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 	u8 ring_selector = 0, ring_map = 0;
 	bool tcl_ring_retry;
 
-	if (test_bit(ATH11K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags))
+	if (unlikely(test_bit(ATH11K_FLAG_CRASH_FLUSH, &ar->ab->dev_flags)))
 		return -ESHUTDOWN;
 
-	if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
-	    !ieee80211_is_data(hdr->frame_control))
+	if (unlikely(!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
+		     !ieee80211_is_data(hdr->frame_control)))
 		return -ENOTSUPP;
 
 	pool_id = skb_get_queue_mapping(skb) & (ATH11K_HW_MAX_QUEUES - 1);
@@ -127,7 +127,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 			DP_TX_IDR_SIZE - 1, GFP_ATOMIC);
 	spin_unlock_bh(&tx_ring->tx_idr_lock);
 
-	if (ret < 0) {
+	if (unlikely(ret < 0)) {
 		if (ring_map == (BIT(ab->hw_params.max_tx_ring) - 1)) {
 			atomic_inc(&ab->soc_stats.tx_err.misc_fail);
 			return -ENOSPC;
@@ -152,7 +152,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 		ti.meta_data_flags = arvif->tcl_metadata;
 	}
 
-	if (ti.encap_type == HAL_TCL_ENCAP_TYPE_RAW) {
+	if (unlikely(ti.encap_type == HAL_TCL_ENCAP_TYPE_RAW)) {
 		if (skb_cb->flags & ATH11K_SKB_CIPHER_SET) {
 			ti.encrypt_type =
 				ath11k_dp_tx_get_encrypt_type(skb_cb->cipher);
@@ -173,8 +173,8 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 	ti.bss_ast_idx = arvif->ast_idx;
 	ti.dscp_tid_tbl_idx = 0;
 
-	if (skb->ip_summed == CHECKSUM_PARTIAL &&
-	    ti.encap_type != HAL_TCL_ENCAP_TYPE_RAW) {
+	if (likely(skb->ip_summed == CHECKSUM_PARTIAL &&
+		   ti.encap_type != HAL_TCL_ENCAP_TYPE_RAW)) {
 		ti.flags0 |= FIELD_PREP(HAL_TCL_DATA_CMD_INFO1_IP4_CKSUM_EN, 1) |
 			     FIELD_PREP(HAL_TCL_DATA_CMD_INFO1_UDP4_CKSUM_EN, 1) |
 			     FIELD_PREP(HAL_TCL_DATA_CMD_INFO1_UDP6_CKSUM_EN, 1) |
@@ -211,7 +211,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 	}
 
 	ti.paddr = dma_map_single(ab->dev, skb->data, skb->len, DMA_TO_DEVICE);
-	if (dma_mapping_error(ab->dev, ti.paddr)) {
+	if (unlikely(dma_mapping_error(ab->dev, ti.paddr))) {
 		atomic_inc(&ab->soc_stats.tx_err.misc_fail);
 		ath11k_warn(ab, "failed to DMA map data Tx buffer\n");
 		ret = -ENOMEM;
@@ -231,7 +231,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 	ath11k_hal_srng_access_begin(ab, tcl_ring);
 
 	hal_tcl_desc = (void *)ath11k_hal_srng_src_get_next_entry(ab, tcl_ring);
-	if (!hal_tcl_desc) {
+	if (unlikely(!hal_tcl_desc)) {
 		/* NOTE: It is highly unlikely we'll be running out of tcl_ring
 		 * desc because the desc is directly enqueued onto hw queue.
 		 */
@@ -245,7 +245,7 @@ int ath11k_dp_tx(struct ath11k *ar, struct ath11k_vif *arvif,
 		 * checking this ring earlier for each pkt tx.
 		 * Restart ring selection if some rings are not checked yet.
 		 */
-		if (ring_map != (BIT(ab->hw_params.max_tx_ring) - 1) &&
+		if (unlikely(ring_map != (BIT(ab->hw_params.max_tx_ring)) - 1) &&
 		    ab->hw_params.max_tx_ring > 1) {
 			tcl_ring_retry = true;
 			ring_selector++;
@@ -293,20 +293,18 @@ static void ath11k_dp_tx_free_txbuf(struct ath11k_base *ab, u8 mac_id,
 	struct sk_buff *msdu;
 	struct ath11k_skb_cb *skb_cb;
 
-	spin_lock_bh(&tx_ring->tx_idr_lock);
-	msdu = idr_find(&tx_ring->txbuf_idr, msdu_id);
-	if (!msdu) {
+	spin_lock(&tx_ring->tx_idr_lock);
+	msdu = idr_remove(&tx_ring->txbuf_idr, msdu_id);
+	spin_unlock(&tx_ring->tx_idr_lock);
+
+	if (unlikely(!msdu)) {
 		ath11k_warn(ab, "tx completion for unknown msdu_id %d\n",
 			    msdu_id);
-		spin_unlock_bh(&tx_ring->tx_idr_lock);
 		return;
 	}
 
 	skb_cb = ATH11K_SKB_CB(msdu);
 
-	idr_remove(&tx_ring->txbuf_idr, msdu_id);
-	spin_unlock_bh(&tx_ring->tx_idr_lock);
-
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 	dev_kfree_skb_any(msdu);
 
@@ -325,12 +323,13 @@ ath11k_dp_tx_htt_tx_complete_buf(struct ath11k_base *ab,
 	struct ath11k_skb_cb *skb_cb;
 	struct ath11k *ar;
 
-	spin_lock_bh(&tx_ring->tx_idr_lock);
-	msdu = idr_find(&tx_ring->txbuf_idr, ts->msdu_id);
-	if (!msdu) {
+	spin_lock(&tx_ring->tx_idr_lock);
+	msdu = idr_remove(&tx_ring->txbuf_idr, ts->msdu_id);
+	spin_unlock(&tx_ring->tx_idr_lock);
+
+	if (unlikely(!msdu)) {
 		ath11k_warn(ab, "htt tx completion for unknown msdu_id %d\n",
 			    ts->msdu_id);
-		spin_unlock_bh(&tx_ring->tx_idr_lock);
 		return;
 	}
 
@@ -339,9 +338,6 @@ ath11k_dp_tx_htt_tx_complete_buf(struct ath11k_base *ab,
 
 	ar = skb_cb->ar;
 
-	idr_remove(&tx_ring->txbuf_idr, ts->msdu_id);
-	spin_unlock_bh(&tx_ring->tx_idr_lock);
-
 	if (atomic_dec_and_test(&ar->dp.num_tx_pending))
 		wake_up(&ar->dp.tx_empty_waitq);
 
@@ -435,16 +431,14 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
 
 	dma_unmap_single(ab->dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE);
 
-	rcu_read_lock();
-
-	if (!rcu_dereference(ab->pdevs_active[ar->pdev_idx])) {
+	if (unlikely(!rcu_access_pointer(ab->pdevs_active[ar->pdev_idx]))) {
 		dev_kfree_skb_any(msdu);
-		goto exit;
+		return;
 	}
 
-	if (!skb_cb->vif) {
+	if (unlikely(!skb_cb->vif)) {
 		dev_kfree_skb_any(msdu);
-		goto exit;
+		return;
 	}
 
 	info = IEEE80211_SKB_CB(msdu);
@@ -465,7 +459,7 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
 	    (info->flags & IEEE80211_TX_CTL_NO_ACK))
 		info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
 
-	if (ath11k_debugfs_is_extd_tx_stats_enabled(ar)) {
+	if (unlikely(ath11k_debugfs_is_extd_tx_stats_enabled(ar))) {
 		if (ts->flags & HAL_TX_STATUS_FLAGS_FIRST_MSDU) {
 			if (ar->last_ppdu_id == 0) {
 				ar->last_ppdu_id = ts->ppdu_id;
@@ -494,9 +488,6 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
 	 */
 
 	ieee80211_tx_status(ar->hw, msdu);
-
-exit:
-	rcu_read_unlock();
 }
 
 static inline void ath11k_dp_tx_status_parse(struct ath11k_base *ab,
@@ -505,11 +496,11 @@ static inline void ath11k_dp_tx_status_parse(struct ath11k_base *ab,
 {
 	ts->buf_rel_source =
 		FIELD_GET(HAL_WBM_RELEASE_INFO0_REL_SRC_MODULE, desc->info0);
-	if (ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_FW &&
-	    ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM)
+	if (unlikely(ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_FW &&
+		     ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM))
 		return;
 
-	if (ts->buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW)
+	if (unlikely(ts->buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW))
 		return;
 
 	ts->status = FIELD_GET(HAL_WBM_RELEASE_INFO0_TQM_RELEASE_REASON,
@@ -556,8 +547,9 @@ void ath11k_dp_tx_completion_handler(struct ath11k_base *ab, int ring_id)
 			ATH11K_TX_COMPL_NEXT(tx_ring->tx_status_head);
 	}
 
-	if ((ath11k_hal_srng_dst_peek(ab, status_ring) != NULL) &&
-	    (ATH11K_TX_COMPL_NEXT(tx_ring->tx_status_head) == tx_ring->tx_status_tail)) {
+	if (unlikely((ath11k_hal_srng_dst_peek(ab, status_ring) != NULL) &&
+		     (ATH11K_TX_COMPL_NEXT(tx_ring->tx_status_head) ==
+		      tx_ring->tx_status_tail))) {
 		/* TODO: Process pending tx_status messages when kfifo_is_full() */
 		ath11k_warn(ab, "Unable to process some of the tx_status ring desc because status_fifo is full\n");
 	}
@@ -580,7 +572,7 @@ void ath11k_dp_tx_completion_handler(struct ath11k_base *ab, int ring_id)
 		mac_id = FIELD_GET(DP_TX_DESC_ID_MAC_ID, desc_id);
 		msdu_id = FIELD_GET(DP_TX_DESC_ID_MSDU_ID, desc_id);
 
-		if (ts.buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW) {
+		if (unlikely(ts.buf_rel_source == HAL_WBM_REL_SRC_MODULE_FW)) {
 			ath11k_dp_tx_process_htt_tx_complete(ab,
 							     (void *)tx_status,
 							     mac_id, msdu_id,
@@ -588,16 +580,16 @@ void ath11k_dp_tx_completion_handler(struct ath11k_base *ab, int ring_id)
 			continue;
 		}
 
-		spin_lock_bh(&tx_ring->tx_idr_lock);
-		msdu = idr_find(&tx_ring->txbuf_idr, msdu_id);
-		if (!msdu) {
+		spin_lock(&tx_ring->tx_idr_lock);
+		msdu = idr_remove(&tx_ring->txbuf_idr, msdu_id);
+		if (unlikely(!msdu)) {
 			ath11k_warn(ab, "tx completion for unknown msdu_id %d\n",
 				    msdu_id);
-			spin_unlock_bh(&tx_ring->tx_idr_lock);
+			spin_unlock(&tx_ring->tx_idr_lock);
 			continue;
 		}
-		idr_remove(&tx_ring->txbuf_idr, msdu_id);
-		spin_unlock_bh(&tx_ring->tx_idr_lock);
+
+		spin_unlock(&tx_ring->tx_idr_lock);
 
 		ar = ab->pdevs[mac_id].ar;
 
@@ -903,7 +895,7 @@ int ath11k_dp_tx_htt_h2t_ppdu_stats_req(struct ath11k *ar, u32 mask)
 		cmd->msg = FIELD_PREP(HTT_PPDU_STATS_CFG_MSG_TYPE,
 				      HTT_H2T_MSG_TYPE_PPDU_STATS_CFG);
 
-		pdev_mask = 1 << (i + 1);
+		pdev_mask = 1 << (ar->pdev_idx + i);
 		cmd->msg |= FIELD_PREP(HTT_PPDU_STATS_CFG_PDEV_ID, pdev_mask);
 		cmd->msg |= FIELD_PREP(HTT_PPDU_STATS_CFG_TLV_TYPE_BITMASK, mask);
 

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

@@ -627,6 +627,21 @@ u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng)
 	return NULL;
 }
 
+static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab,
+					  struct hal_srng *srng)
+{
+	u32 *desc;
+
+	/* prefetch only if desc is available */
+	desc = ath11k_hal_srng_dst_peek(ab, srng);
+	if (likely(desc)) {
+		dma_sync_single_for_cpu(ab->dev, virt_to_phys(desc),
+					(srng->entry_size * sizeof(u32)),
+					DMA_FROM_DEVICE);
+		prefetch(desc);
+	}
+}
+
 u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
 					struct hal_srng *srng)
 {
@@ -639,8 +654,15 @@ u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
 
 	desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
 
-	srng->u.dst_ring.tp = (srng->u.dst_ring.tp + srng->entry_size) %
-			      srng->ring_size;
+	srng->u.dst_ring.tp += srng->entry_size;
+
+	/* wrap around to start of ring*/
+	if (srng->u.dst_ring.tp == srng->ring_size)
+		srng->u.dst_ring.tp = 0;
+
+	/* Try to prefetch the next descriptor in the ring */
+	if (srng->flags & HAL_SRNG_FLAGS_CACHED)
+		ath11k_hal_srng_prefetch_desc(ab, srng);
 
 	return desc;
 }
@@ -775,11 +797,16 @@ void ath11k_hal_srng_access_begin(struct ath11k_base *ab, struct hal_srng *srng)
 {
 	lockdep_assert_held(&srng->lock);
 
-	if (srng->ring_dir == HAL_SRNG_DIR_SRC)
+	if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
 		srng->u.src_ring.cached_tp =
 			*(volatile u32 *)srng->u.src_ring.tp_addr;
-	else
+	} else {
 		srng->u.dst_ring.cached_hp = *srng->u.dst_ring.hp_addr;
+
+		/* Try to prefetch the next descriptor in the ring */
+		if (srng->flags & HAL_SRNG_FLAGS_CACHED)
+			ath11k_hal_srng_prefetch_desc(ab, srng);
+	}
 }
 
 /* Update cached ring head/tail pointers to HW. ath11k_hal_srng_access_begin()

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

@@ -513,6 +513,7 @@ enum hal_srng_dir {
 #define HAL_SRNG_FLAGS_DATA_TLV_SWAP		0x00000020
 #define HAL_SRNG_FLAGS_LOW_THRESH_INTR_EN	0x00010000
 #define HAL_SRNG_FLAGS_MSI_INTR			0x00020000
+#define HAL_SRNG_FLAGS_CACHED                   0x20000000
 #define HAL_SRNG_FLAGS_LMAC_RING		0x80000000
 
 #define HAL_SRNG_TLV_HDR_TAG		GENMASK(9, 1)

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

@@ -81,6 +81,8 @@ int ath11k_htc_send(struct ath11k_htc *htc,
 	struct ath11k_base *ab = htc->ab;
 	int credits = 0;
 	int ret;
+	bool credit_flow_enabled = (ab->hw_params.credit_flow &&
+				    ep->tx_credit_flow_enabled);
 
 	if (eid >= ATH11K_HTC_EP_COUNT) {
 		ath11k_warn(ab, "Invalid endpoint id: %d\n", eid);
@@ -89,7 +91,7 @@ int ath11k_htc_send(struct ath11k_htc *htc,
 
 	skb_push(skb, sizeof(struct ath11k_htc_hdr));
 
-	if (ep->tx_credit_flow_enabled) {
+	if (credit_flow_enabled) {
 		credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);
 		spin_lock_bh(&htc->tx_lock);
 		if (ep->tx_credits < credits) {
@@ -126,7 +128,7 @@ int ath11k_htc_send(struct ath11k_htc *htc,
 err_unmap:
 	dma_unmap_single(dev, skb_cb->paddr, skb->len, DMA_TO_DEVICE);
 err_credits:
-	if (ep->tx_credit_flow_enabled) {
+	if (credit_flow_enabled) {
 		spin_lock_bh(&htc->tx_lock);
 		ep->tx_credits += credits;
 		ath11k_dbg(ab, ATH11K_DBG_HTC,
@@ -203,23 +205,25 @@ static int ath11k_htc_process_trailer(struct ath11k_htc *htc,
 			break;
 		}
 
-		switch (record->hdr.id) {
-		case ATH11K_HTC_RECORD_CREDITS:
-			len = sizeof(struct ath11k_htc_credit_report);
-			if (record->hdr.len < len) {
-				ath11k_warn(ab, "Credit report too long\n");
-				status = -EINVAL;
+		if (ab->hw_params.credit_flow) {
+			switch (record->hdr.id) {
+			case ATH11K_HTC_RECORD_CREDITS:
+				len = sizeof(struct ath11k_htc_credit_report);
+				if (record->hdr.len < len) {
+					ath11k_warn(ab, "Credit report too long\n");
+					status = -EINVAL;
+					break;
+				}
+				ath11k_htc_process_credit_report(htc,
+								 record->credit_report,
+								 record->hdr.len,
+								 src_eid);
+				break;
+			default:
+				ath11k_warn(ab, "Unhandled record: id:%d length:%d\n",
+					    record->hdr.id, record->hdr.len);
 				break;
 			}
-			ath11k_htc_process_credit_report(htc,
-							 record->credit_report,
-							 record->hdr.len,
-							 src_eid);
-			break;
-		default:
-			ath11k_warn(ab, "Unhandled record: id:%d length:%d\n",
-				    record->hdr.id, record->hdr.len);
-			break;
 		}
 
 		if (status)
@@ -245,6 +249,29 @@ static void ath11k_htc_suspend_complete(struct ath11k_base *ab, bool ack)
 	complete(&ab->htc_suspend);
 }
 
+void ath11k_htc_tx_completion_handler(struct ath11k_base *ab,
+				      struct sk_buff *skb)
+{
+	struct ath11k_htc *htc = &ab->htc;
+	struct ath11k_htc_ep *ep;
+	void (*ep_tx_complete)(struct ath11k_base *, struct sk_buff *);
+	u8 eid;
+
+	eid = ATH11K_SKB_CB(skb)->eid;
+	if (eid >= ATH11K_HTC_EP_COUNT)
+		return;
+
+	ep = &htc->endpoint[eid];
+	spin_lock_bh(&htc->tx_lock);
+	ep_tx_complete = ep->ep_ops.ep_tx_complete;
+	spin_unlock_bh(&htc->tx_lock);
+	if (!ep_tx_complete) {
+		dev_kfree_skb_any(skb);
+		return;
+	}
+	ep_tx_complete(htc->ab, skb);
+}
+
 void ath11k_htc_rx_completion_handler(struct ath11k_base *ab,
 				      struct sk_buff *skb)
 {
@@ -607,6 +634,11 @@ int ath11k_htc_connect_service(struct ath11k_htc *htc,
 		disable_credit_flow_ctrl = true;
 	}
 
+	if (!ab->hw_params.credit_flow) {
+		flags |= ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL;
+		disable_credit_flow_ctrl = true;
+	}
+
 	req_msg->flags_len = FIELD_PREP(HTC_SVC_MSG_CONNECTIONFLAGS, flags);
 	req_msg->msg_svc_id |= FIELD_PREP(HTC_SVC_MSG_SERVICE_ID,
 					  conn_req->service_id);
@@ -732,7 +764,10 @@ int ath11k_htc_start(struct ath11k_htc *htc)
 	msg->msg_id = FIELD_PREP(HTC_MSG_MESSAGEID,
 				 ATH11K_HTC_MSG_SETUP_COMPLETE_EX_ID);
 
-	ath11k_dbg(ab, ATH11K_DBG_HTC, "HTC is using TX credit flow control\n");
+	if (ab->hw_params.credit_flow)
+		ath11k_dbg(ab, ATH11K_DBG_HTC, "HTC is using TX credit flow control\n");
+	else
+		msg->flags |= ATH11K_GLOBAL_DISABLE_CREDIT_FLOW;
 
 	status = ath11k_htc_send(htc, ATH11K_HTC_EP_0, skb);
 	if (status) {

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

@@ -83,8 +83,8 @@ enum ath11k_htc_conn_flags {
 	ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_ONE_HALF      = 0x1,
 	ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS = 0x2,
 	ATH11K_HTC_CONN_FLAGS_THRESHOLD_LEVEL_UNITY         = 0x3,
-	ATH11K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE    = 1 << 2,
-	ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL = 1 << 3
+	ATH11K_HTC_CONN_FLAGS_REDUCE_CREDIT_DRIBBLE	    = 0x4,
+	ATH11K_HTC_CONN_FLAGS_DISABLE_CREDIT_FLOW_CTRL	    = 0x8,
 };
 
 enum ath11k_htc_conn_svc_status {
@@ -116,6 +116,8 @@ struct ath11k_htc_conn_svc_resp {
 	u32 svc_meta_pad;
 } __packed;
 
+#define ATH11K_GLOBAL_DISABLE_CREDIT_FLOW BIT(1)
+
 struct ath11k_htc_setup_complete_extended {
 	u32 msg_id;
 	u32 flags;
@@ -305,5 +307,6 @@ int ath11k_htc_send(struct ath11k_htc *htc, enum ath11k_htc_ep_id eid,
 struct sk_buff *ath11k_htc_alloc_skb(struct ath11k_base *ar, int size);
 void ath11k_htc_rx_completion_handler(struct ath11k_base *ar,
 				      struct sk_buff *skb);
-
+void ath11k_htc_tx_completion_handler(struct ath11k_base *ab,
+				      struct sk_buff *skb);
 #endif

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

@@ -1061,8 +1061,6 @@ const struct ath11k_hw_ring_mask ath11k_hw_ring_mask_ipq8074 = {
 const struct ath11k_hw_ring_mask ath11k_hw_ring_mask_qca6390 = {
 	.tx  = {
 		ATH11K_TX_RING_MASK_0,
-		ATH11K_TX_RING_MASK_1,
-		ATH11K_TX_RING_MASK_2,
 	},
 	.rx_mon_status = {
 		0, 0, 0, 0,

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

@@ -170,12 +170,17 @@ struct ath11k_hw_params {
 	bool supports_monitor;
 	bool supports_shadow_regs;
 	bool idle_ps;
+	bool supports_sta_ps;
 	bool cold_boot_calib;
 	bool supports_suspend;
 	u32 hal_desc_sz;
 	bool fix_l1ss;
+	bool credit_flow;
 	u8 max_tx_ring;
 	const struct ath11k_hw_hal_params *hal_params;
+	bool supports_dynamic_smps_6ghz;
+	bool alloc_cacheable_memory;
+	bool wakeup_mhi;
 };
 
 struct ath11k_hw_ops {

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

@@ -155,4 +155,5 @@ enum ath11k_supported_bw ath11k_mac_mac80211_bw_to_ath11k_bw(enum rate_info_bw b
 enum hal_encrypt_type ath11k_dp_tx_get_encrypt_type(u32 cipher);
 void ath11k_mac_handle_beacon(struct ath11k *ar, struct sk_buff *skb);
 void ath11k_mac_handle_beacon_miss(struct ath11k *ar, u32 vdev_id);
+void ath11k_mac_bcn_tx_event(struct ath11k_vif *arvif);
 #endif

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

@@ -182,7 +182,8 @@ void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value)
 	/* for offset beyond BAR + 4K - 32, may
 	 * need to wakeup MHI to access.
 	 */
-	if (test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+	if (ab->hw_params.wakeup_mhi &&
+	    test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
 	    offset >= ACCESS_ALWAYS_OFF)
 		mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
 
@@ -206,7 +207,8 @@ void ath11k_pci_write32(struct ath11k_base *ab, u32 offset, u32 value)
 		}
 	}
 
-	if (test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+	if (ab->hw_params.wakeup_mhi &&
+	    test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
 	    offset >= ACCESS_ALWAYS_OFF)
 		mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
 }
@@ -219,7 +221,8 @@ u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset)
 	/* for offset beyond BAR + 4K - 32, may
 	 * need to wakeup MHI to access.
 	 */
-	if (test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+	if (ab->hw_params.wakeup_mhi &&
+	    test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
 	    offset >= ACCESS_ALWAYS_OFF)
 		mhi_device_get_sync(ab_pci->mhi_ctrl->mhi_dev);
 
@@ -243,7 +246,8 @@ u32 ath11k_pci_read32(struct ath11k_base *ab, u32 offset)
 		}
 	}
 
-	if (test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
+	if (ab->hw_params.wakeup_mhi &&
+	    test_bit(ATH11K_PCI_FLAG_INIT_DONE, &ab_pci->flags) &&
 	    offset >= ACCESS_ALWAYS_OFF)
 		mhi_device_put(ab_pci->mhi_ctrl->mhi_dev);
 
@@ -1251,6 +1255,15 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 		goto err_free_core;
 	}
 
+	ath11k_dbg(ab, ATH11K_DBG_BOOT, "pci probe %04x:%04x %04x:%04x\n",
+		   pdev->vendor, pdev->device,
+		   pdev->subsystem_vendor, pdev->subsystem_device);
+
+	ab->id.vendor = pdev->vendor;
+	ab->id.device = pdev->device;
+	ab->id.subsystem_vendor = pdev->subsystem_vendor;
+	ab->id.subsystem_device = pdev->subsystem_device;
+
 	switch (pci_dev->device) {
 	case QCA6390_DEVICE_ID:
 		ath11k_pci_read_hw_version(ab, &soc_hw_version_major,
@@ -1273,6 +1286,7 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
 		ab->hw_rev = ATH11K_HW_QCN9074_HW10;
 		break;
 	case WCN6855_DEVICE_ID:
+		ab->id.bdf_search = ATH11K_BDF_SEARCH_BUS_AND_BOARD;
 		ath11k_pci_read_hw_version(ab, &soc_hw_version_major,
 					   &soc_hw_version_minor);
 		switch (soc_hw_version_major) {

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

@@ -28,6 +28,7 @@ struct ath11k_peer {
 	u8 ucast_keyidx;
 	u16 sec_type;
 	u16 sec_type_grp;
+	bool is_authorized;
 };
 
 void ath11k_peer_unmap_event(struct ath11k_base *ab, u16 peer_id);

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

@@ -1586,7 +1586,7 @@ static int ath11k_qmi_host_cap_send(struct ath11k_base *ab)
 {
 	struct qmi_wlanfw_host_cap_req_msg_v01 req;
 	struct qmi_wlanfw_host_cap_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0;
 
 	memset(&req, 0, sizeof(req));
@@ -1640,6 +1640,7 @@ static int ath11k_qmi_host_cap_send(struct ath11k_base *ab)
 			       QMI_WLANFW_HOST_CAP_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_host_cap_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send host capability request: %d\n", ret);
 		goto out;
 	}
@@ -1705,6 +1706,7 @@ static int ath11k_qmi_fw_ind_register_send(struct ath11k_base *ab)
 			       QMI_WLANFW_IND_REGISTER_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_ind_register_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send indication register request: %d\n",
 			    ret);
 		goto out;
@@ -1734,7 +1736,7 @@ static int ath11k_qmi_respond_fw_mem_request(struct ath11k_base *ab)
 {
 	struct qmi_wlanfw_respond_mem_req_msg_v01 *req;
 	struct qmi_wlanfw_respond_mem_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0, i;
 	bool delayed;
 
@@ -1783,6 +1785,7 @@ static int ath11k_qmi_respond_fw_mem_request(struct ath11k_base *ab)
 			       QMI_WLANFW_RESPOND_MEM_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_respond_mem_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to respond qmi memory request: %d\n",
 			    ret);
 		goto out;
@@ -1911,7 +1914,7 @@ static int ath11k_qmi_request_target_cap(struct ath11k_base *ab)
 {
 	struct qmi_wlanfw_cap_req_msg_v01 req;
 	struct qmi_wlanfw_cap_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0;
 	int r;
 
@@ -1930,6 +1933,7 @@ static int ath11k_qmi_request_target_cap(struct ath11k_base *ab)
 			       QMI_WLANFW_CAP_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_cap_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send qmi cap request: %d\n",
 			    ret);
 		goto out;
@@ -2000,7 +2004,7 @@ static int ath11k_qmi_load_file_target_mem(struct ath11k_base *ab,
 {
 	struct qmi_wlanfw_bdf_download_req_msg_v01 *req;
 	struct qmi_wlanfw_bdf_download_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	const u8 *temp = data;
 	void __iomem *bdf_addr = NULL;
 	int ret;
@@ -2245,7 +2249,7 @@ static int ath11k_qmi_wlanfw_m3_info_send(struct ath11k_base *ab)
 	struct m3_mem_region *m3_mem = &ab->qmi.m3_mem;
 	struct qmi_wlanfw_m3_info_req_msg_v01 req;
 	struct qmi_wlanfw_m3_info_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0;
 
 	memset(&req, 0, sizeof(req));
@@ -2277,6 +2281,7 @@ static int ath11k_qmi_wlanfw_m3_info_send(struct ath11k_base *ab)
 			       QMI_WLANFW_M3_INFO_REQ_MSG_V01_MAX_MSG_LEN,
 			       qmi_wlanfw_m3_info_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send m3 information request: %d\n",
 			    ret);
 		goto out;
@@ -2303,7 +2308,7 @@ static int ath11k_qmi_wlanfw_mode_send(struct ath11k_base *ab,
 {
 	struct qmi_wlanfw_wlan_mode_req_msg_v01 req;
 	struct qmi_wlanfw_wlan_mode_resp_msg_v01 resp;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0;
 
 	memset(&req, 0, sizeof(req));
@@ -2325,6 +2330,7 @@ static int ath11k_qmi_wlanfw_mode_send(struct ath11k_base *ab,
 			       QMI_WLANFW_WLAN_MODE_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_wlan_mode_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send wlan mode request (mode %d): %d\n",
 			    mode, ret);
 		goto out;
@@ -2358,7 +2364,7 @@ static int ath11k_qmi_wlanfw_wlan_cfg_send(struct ath11k_base *ab)
 	struct qmi_wlanfw_wlan_cfg_resp_msg_v01 resp;
 	struct ce_pipe_config *ce_cfg;
 	struct service_to_pipe *svc_cfg;
-	struct qmi_txn txn = {};
+	struct qmi_txn txn;
 	int ret = 0, pipe_num;
 
 	ce_cfg	= (struct ce_pipe_config *)ab->qmi.ce_cfg.tgt_ce;
@@ -2419,6 +2425,7 @@ static int ath11k_qmi_wlanfw_wlan_cfg_send(struct ath11k_base *ab)
 			       QMI_WLANFW_WLAN_CFG_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_wlan_cfg_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath11k_warn(ab, "failed to send wlan config request: %d\n",
 			    ret);
 		goto out;

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

@@ -456,6 +456,9 @@ ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw)
 {
 	u16 bw;
 
+	if (end_freq <= start_freq)
+		return 0;
+
 	bw = end_freq - start_freq;
 	bw = min_t(u16, bw, max_bw);
 
@@ -463,8 +466,10 @@ ath11k_reg_adjust_bw(u16 start_freq, u16 end_freq, u16 max_bw)
 		bw = 80;
 	else if (bw >= 40 && bw < 80)
 		bw = 40;
-	else if (bw < 40)
+	else if (bw >= 20 && bw < 40)
 		bw = 20;
+	else
+		bw = 0;
 
 	return bw;
 }
@@ -488,73 +493,77 @@ ath11k_reg_update_weather_radar_band(struct ath11k_base *ab,
 				     struct cur_reg_rule *reg_rule,
 				     u8 *rule_idx, u32 flags, u16 max_bw)
 {
+	u32 start_freq;
 	u32 end_freq;
 	u16 bw;
 	u8 i;
 
 	i = *rule_idx;
 
+	/* there might be situations when even the input rule must be dropped */
+	i--;
+
+	/* frequencies below weather radar */
 	bw = ath11k_reg_adjust_bw(reg_rule->start_freq,
 				  ETSI_WEATHER_RADAR_BAND_LOW, max_bw);
+	if (bw > 0) {
+		i++;
 
-	ath11k_reg_update_rule(regd->reg_rules + i, reg_rule->start_freq,
-			       ETSI_WEATHER_RADAR_BAND_LOW, bw,
-			       reg_rule->ant_gain, reg_rule->reg_power,
-			       flags);
+		ath11k_reg_update_rule(regd->reg_rules + i,
+				       reg_rule->start_freq,
+				       ETSI_WEATHER_RADAR_BAND_LOW, bw,
+				       reg_rule->ant_gain, reg_rule->reg_power,
+				       flags);
 
-	ath11k_dbg(ab, ATH11K_DBG_REG,
-		   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
-		   i + 1, reg_rule->start_freq, ETSI_WEATHER_RADAR_BAND_LOW,
-		   bw, reg_rule->ant_gain, reg_rule->reg_power,
-		   regd->reg_rules[i].dfs_cac_ms,
-		   flags);
-
-	if (reg_rule->end_freq > ETSI_WEATHER_RADAR_BAND_HIGH)
-		end_freq = ETSI_WEATHER_RADAR_BAND_HIGH;
-	else
-		end_freq = reg_rule->end_freq;
+		ath11k_dbg(ab, ATH11K_DBG_REG,
+			   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
+			   i + 1, reg_rule->start_freq,
+			   ETSI_WEATHER_RADAR_BAND_LOW, bw, reg_rule->ant_gain,
+			   reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms,
+			   flags);
+	}
 
-	bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
-				  max_bw);
+	/* weather radar frequencies */
+	start_freq = max_t(u32, reg_rule->start_freq,
+			   ETSI_WEATHER_RADAR_BAND_LOW);
+	end_freq = min_t(u32, reg_rule->end_freq, ETSI_WEATHER_RADAR_BAND_HIGH);
 
-	i++;
+	bw = ath11k_reg_adjust_bw(start_freq, end_freq, max_bw);
+	if (bw > 0) {
+		i++;
 
-	ath11k_reg_update_rule(regd->reg_rules + i,
-			       ETSI_WEATHER_RADAR_BAND_LOW, end_freq, bw,
-			       reg_rule->ant_gain, reg_rule->reg_power,
-			       flags);
+		ath11k_reg_update_rule(regd->reg_rules + i, start_freq,
+				       end_freq, bw, reg_rule->ant_gain,
+				       reg_rule->reg_power, flags);
 
-	regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT;
+		regd->reg_rules[i].dfs_cac_ms = ETSI_WEATHER_RADAR_BAND_CAC_TIMEOUT;
 
-	ath11k_dbg(ab, ATH11K_DBG_REG,
-		   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
-		   i + 1, ETSI_WEATHER_RADAR_BAND_LOW, end_freq,
-		   bw, reg_rule->ant_gain, reg_rule->reg_power,
-		   regd->reg_rules[i].dfs_cac_ms,
-		   flags);
-
-	if (end_freq == reg_rule->end_freq) {
-		regd->n_reg_rules--;
-		*rule_idx = i;
-		return;
+		ath11k_dbg(ab, ATH11K_DBG_REG,
+			   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
+			   i + 1, start_freq, end_freq, bw,
+			   reg_rule->ant_gain, reg_rule->reg_power,
+			   regd->reg_rules[i].dfs_cac_ms, flags);
 	}
 
+	/* frequencies above weather radar */
 	bw = ath11k_reg_adjust_bw(ETSI_WEATHER_RADAR_BAND_HIGH,
 				  reg_rule->end_freq, max_bw);
+	if (bw > 0) {
+		i++;
 
-	i++;
-
-	ath11k_reg_update_rule(regd->reg_rules + i, ETSI_WEATHER_RADAR_BAND_HIGH,
-			       reg_rule->end_freq, bw,
-			       reg_rule->ant_gain, reg_rule->reg_power,
-			       flags);
+		ath11k_reg_update_rule(regd->reg_rules + i,
+				       ETSI_WEATHER_RADAR_BAND_HIGH,
+				       reg_rule->end_freq, bw,
+				       reg_rule->ant_gain, reg_rule->reg_power,
+				       flags);
 
-	ath11k_dbg(ab, ATH11K_DBG_REG,
-		   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
-		   i + 1, ETSI_WEATHER_RADAR_BAND_HIGH, reg_rule->end_freq,
-		   bw, reg_rule->ant_gain, reg_rule->reg_power,
-		   regd->reg_rules[i].dfs_cac_ms,
-		   flags);
+		ath11k_dbg(ab, ATH11K_DBG_REG,
+			   "\t%d. (%d - %d @ %d) (%d, %d) (%d ms) (FLAGS %d)\n",
+			   i + 1, ETSI_WEATHER_RADAR_BAND_HIGH,
+			   reg_rule->end_freq, bw, reg_rule->ant_gain,
+			   reg_rule->reg_power, regd->reg_rules[i].dfs_cac_ms,
+			   flags);
+	}
 
 	*rule_idx = i;
 }

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

@@ -7,3 +7,4 @@
 
 #define CREATE_TRACE_POINTS
 #include "trace.h"
+EXPORT_SYMBOL(__tracepoint_ath11k_log_dbg);

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

@@ -14,12 +14,24 @@
 #if !defined(CONFIG_ATH11K_TRACING)
 #undef TRACE_EVENT
 #define TRACE_EVENT(name, proto, ...) \
+static inline void trace_ ## name(proto) {} \
+static inline bool trace_##name##_enabled(void) \
+{						\
+	return false;				\
+}
+
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(...)
+#undef DEFINE_EVENT
+#define DEFINE_EVENT(evt_class, name, proto, ...) \
 static inline void trace_ ## name(proto) {}
 #endif /* !CONFIG_ATH11K_TRACING || __CHECKER__ */
 
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM ath11k
 
+#define ATH11K_MSG_MAX 400
+
 TRACE_EVENT(ath11k_htt_pktlog,
 	    TP_PROTO(struct ath11k *ar, const void *buf, u16 buf_len,
 		     u32 pktlog_checksum),
@@ -108,6 +120,166 @@ TRACE_EVENT(ath11k_htt_rxdesc,
 	 )
 );
 
+DECLARE_EVENT_CLASS(ath11k_log_event,
+		    TP_PROTO(struct ath11k_base *ab, struct va_format *vaf),
+	TP_ARGS(ab, vaf),
+	TP_STRUCT__entry(
+		__string(device, dev_name(ab->dev))
+		__string(driver, dev_driver_string(ab->dev))
+		__dynamic_array(char, msg, ATH11K_MSG_MAX)
+	),
+	TP_fast_assign(
+		__assign_str(device, dev_name(ab->dev));
+		__assign_str(driver, dev_driver_string(ab->dev));
+		WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
+				       ATH11K_MSG_MAX,
+				       vaf->fmt,
+				       *vaf->va) >= ATH11K_MSG_MAX);
+	),
+	TP_printk(
+		"%s %s %s",
+		__get_str(driver),
+		__get_str(device),
+		__get_str(msg)
+	)
+);
+
+DEFINE_EVENT(ath11k_log_event, ath11k_log_err,
+	     TP_PROTO(struct ath11k_base *ab, struct va_format *vaf),
+	     TP_ARGS(ab, vaf)
+);
+
+DEFINE_EVENT(ath11k_log_event, ath11k_log_warn,
+	     TP_PROTO(struct ath11k_base *ab, struct va_format *vaf),
+	     TP_ARGS(ab, vaf)
+);
+
+DEFINE_EVENT(ath11k_log_event, ath11k_log_info,
+	     TP_PROTO(struct ath11k_base *ab, struct va_format *vaf),
+	     TP_ARGS(ab, vaf)
+);
+
+TRACE_EVENT(ath11k_wmi_cmd,
+	    TP_PROTO(struct ath11k_base *ab, int id, const void *buf, size_t buf_len),
+
+	TP_ARGS(ab, id, buf, buf_len),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(ab->dev))
+		__string(driver, dev_driver_string(ab->dev))
+		__field(unsigned int, id)
+		__field(size_t, buf_len)
+		__dynamic_array(u8, buf, buf_len)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(ab->dev));
+		__assign_str(driver, dev_driver_string(ab->dev));
+		__entry->id = id;
+		__entry->buf_len = buf_len;
+		memcpy(__get_dynamic_array(buf), buf, buf_len);
+	),
+
+	TP_printk(
+		"%s %s id %d len %zu",
+		__get_str(driver),
+		__get_str(device),
+		__entry->id,
+		__entry->buf_len
+	 )
+);
+
+TRACE_EVENT(ath11k_wmi_event,
+	    TP_PROTO(struct ath11k_base *ab, int id, const void *buf, size_t buf_len),
+
+	TP_ARGS(ab, id, buf, buf_len),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(ab->dev))
+		__string(driver, dev_driver_string(ab->dev))
+		__field(unsigned int, id)
+		__field(size_t, buf_len)
+		__dynamic_array(u8, buf, buf_len)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(ab->dev));
+		__assign_str(driver, dev_driver_string(ab->dev));
+		__entry->id = id;
+		__entry->buf_len = buf_len;
+		memcpy(__get_dynamic_array(buf), buf, buf_len);
+	),
+
+	TP_printk(
+		"%s %s id %d len %zu",
+		__get_str(driver),
+		__get_str(device),
+		__entry->id,
+		__entry->buf_len
+	)
+);
+
+TRACE_EVENT(ath11k_log_dbg,
+	    TP_PROTO(struct ath11k_base *ab, unsigned int level, struct va_format *vaf),
+
+	TP_ARGS(ab, level, vaf),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(ab->dev))
+		__string(driver, dev_driver_string(ab->dev))
+		__field(unsigned int, level)
+		__dynamic_array(char, msg, ATH11K_MSG_MAX)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(ab->dev));
+		__assign_str(driver, dev_driver_string(ab->dev));
+		__entry->level = level;
+		WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg),
+				       ATH11K_MSG_MAX, vaf->fmt,
+				       *vaf->va) >= ATH11K_MSG_MAX);
+	),
+
+	TP_printk(
+		"%s %s %s",
+		__get_str(driver),
+		__get_str(device),
+		__get_str(msg)
+	)
+);
+
+TRACE_EVENT(ath11k_log_dbg_dump,
+	    TP_PROTO(struct ath11k_base *ab, const char *msg, const char *prefix,
+		     const void *buf, size_t buf_len),
+
+	TP_ARGS(ab, msg, prefix, buf, buf_len),
+
+	TP_STRUCT__entry(
+		__string(device, dev_name(ab->dev))
+		__string(driver, dev_driver_string(ab->dev))
+		__string(msg, msg)
+		__string(prefix, prefix)
+		__field(size_t, buf_len)
+		__dynamic_array(u8, buf, buf_len)
+	),
+
+	TP_fast_assign(
+		__assign_str(device, dev_name(ab->dev));
+		__assign_str(driver, dev_driver_string(ab->dev));
+		__assign_str(msg, msg);
+		__assign_str(prefix, prefix);
+		__entry->buf_len = buf_len;
+		memcpy(__get_dynamic_array(buf), buf, buf_len);
+	),
+
+	TP_printk(
+		"%s %s %s/%s\n",
+		__get_str(driver),
+		__get_str(device),
+		__get_str(prefix),
+		__get_str(msg)
+	)
+);
 #endif /* _TRACE_H_ || TRACE_HEADER_MULTI_READ*/
 
 /* we don't want to use include/trace/events */

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

@@ -774,6 +774,8 @@ enum wmi_tlv_event_id {
 	WMI_MDNS_STATS_EVENTID = WMI_TLV_CMD(WMI_GRP_MDNS_OFL),
 	WMI_SAP_OFL_ADD_STA_EVENTID = WMI_TLV_CMD(WMI_GRP_SAP_OFL),
 	WMI_SAP_OFL_DEL_STA_EVENTID,
+	WMI_OBSS_COLOR_COLLISION_DETECTION_EVENTID =
+		WMI_EVT_GRP_START_ID(WMI_GRP_OBSS_OFL),
 	WMI_OCB_SET_CONFIG_RESP_EVENTID = WMI_TLV_CMD(WMI_GRP_OCB),
 	WMI_OCB_GET_TSF_TIMER_RESP_EVENTID,
 	WMI_DCC_GET_STATS_RESP_EVENTID,
@@ -2522,6 +2524,7 @@ struct ath11k_pdev_wmi {
 	enum ath11k_htc_ep_id eid;
 	const struct wmi_peer_flags_map *peer_flags;
 	u32 rx_decap_mode;
+	wait_queue_head_t tx_ce_desc_wq;
 };
 
 struct vdev_create_params {
@@ -3617,6 +3620,7 @@ struct peer_assoc_params {
 	u32 peer_he_tx_mcs_set[WMI_HOST_MAX_HE_RATE_SET];
 	bool twt_responder;
 	bool twt_requester;
+	bool is_assoc;
 	struct ath11k_ppe_threshold peer_ppet;
 };
 
@@ -4914,6 +4918,13 @@ struct wmi_pdev_obss_pd_bitmap_cmd {
 #define ATH11K_BSS_COLOR_COLLISION_DETECTION_STA_PERIOD_MS	10000
 #define ATH11K_BSS_COLOR_COLLISION_DETECTION_AP_PERIOD_MS	5000
 
+enum wmi_bss_color_collision {
+	WMI_BSS_COLOR_COLLISION_DISABLE = 0,
+	WMI_BSS_COLOR_COLLISION_DETECTION,
+	WMI_BSS_COLOR_FREE_SLOT_TIMER_EXPIRY,
+	WMI_BSS_COLOR_FREE_SLOT_AVAILABLE,
+};
+
 struct wmi_obss_color_collision_cfg_params_cmd {
 	u32 tlv_header;
 	u32 vdev_id;
@@ -4931,6 +4942,12 @@ struct wmi_bss_color_change_enable_params_cmd {
 	u32 enable;
 } __packed;
 
+struct wmi_obss_color_collision_event {
+	u32 vdev_id;
+	u32 evt_type;
+	u64 obss_color_bitmap;
+} __packed;
+
 #define ATH11K_IPV4_TH_SEED_SIZE 5
 #define ATH11K_IPV6_TH_SEED_SIZE 11
 
@@ -5351,7 +5368,8 @@ int ath11k_wmi_set_peer_param(struct ath11k *ar, const u8 *peer_addr,
 			      u32 vdev_id, u32 param_id, u32 param_val);
 int ath11k_wmi_pdev_set_param(struct ath11k *ar, u32 param_id,
 			      u32 param_value, u8 pdev_id);
-int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id, u32 enable);
+int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id,
+				enum wmi_sta_ps_mode psmode);
 int ath11k_wmi_wait_for_unified_ready(struct ath11k_base *ab);
 int ath11k_wmi_cmd_init(struct ath11k_base *ab);
 int ath11k_wmi_wait_for_service_ready(struct ath11k_base *ab);

drivers/net/wireless/ath/ath9k/ar9002_mac.c

@@ -120,7 +120,7 @@ static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked,
 					 AR_ISR_TXEOL);
 			}
 
-			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
+			ah->intr_txqs = MS(s0_s, AR_ISR_S0_QCU_TXOK);
 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);

drivers/net/wireless/ath/ath9k/ar9003_calib.c

@@ -1005,24 +1005,20 @@ static void __ar955x_tx_iq_cal_sort(struct ath_hw *ah,
 				    int i, int nmeasurement)
 {
 	struct ath_common *common = ath9k_hw_common(ah);
-	int im, ix, iy, temp;
+	int im, ix, iy;
 
 	for (im = 0; im < nmeasurement; im++) {
 		for (ix = 0; ix < MAXIQCAL - 1; ix++) {
 			for (iy = ix + 1; iy <= MAXIQCAL - 1; iy++) {
 				if (coeff->mag_coeff[i][im][iy] <
 				    coeff->mag_coeff[i][im][ix]) {
-					temp = coeff->mag_coeff[i][im][ix];
-					coeff->mag_coeff[i][im][ix] =
-						coeff->mag_coeff[i][im][iy];
-					coeff->mag_coeff[i][im][iy] = temp;
+					swap(coeff->mag_coeff[i][im][ix],
+					     coeff->mag_coeff[i][im][iy]);
 				}
 				if (coeff->phs_coeff[i][im][iy] <
 				    coeff->phs_coeff[i][im][ix]) {
-					temp = coeff->phs_coeff[i][im][ix];
-					coeff->phs_coeff[i][im][ix] =
-						coeff->phs_coeff[i][im][iy];
-					coeff->phs_coeff[i][im][iy] = temp;
+					swap(coeff->phs_coeff[i][im][ix],
+					     coeff->phs_coeff[i][im][iy]);
 				}
 			}
 		}

drivers/net/wireless/ath/wcn36xx/dxe.c

@@ -272,6 +272,21 @@ static int wcn36xx_dxe_enable_ch_int(struct wcn36xx *wcn, u16 wcn_ch)
 	return 0;
 }
 
+static void wcn36xx_dxe_disable_ch_int(struct wcn36xx *wcn, u16 wcn_ch)
+{
+	int reg_data = 0;
+
+	wcn36xx_dxe_read_register(wcn,
+				  WCN36XX_DXE_INT_MASK_REG,
+				  &reg_data);
+
+	reg_data &= ~wcn_ch;
+
+	wcn36xx_dxe_write_register(wcn,
+				   WCN36XX_DXE_INT_MASK_REG,
+				   (int)reg_data);
+}
+
 static int wcn36xx_dxe_fill_skb(struct device *dev,
 				struct wcn36xx_dxe_ctl *ctl,
 				gfp_t gfp)
@@ -834,6 +849,53 @@ int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn,
 	return ret;
 }
 
+static bool _wcn36xx_dxe_tx_channel_is_empty(struct wcn36xx_dxe_ch *ch)
+{
+	unsigned long flags;
+	struct wcn36xx_dxe_ctl *ctl_bd_start, *ctl_skb_start;
+	struct wcn36xx_dxe_ctl *ctl_bd, *ctl_skb;
+	bool ret = true;
+
+	spin_lock_irqsave(&ch->lock, flags);
+
+	/* Loop through ring buffer looking for nonempty entries. */
+	ctl_bd_start = ch->head_blk_ctl;
+	ctl_bd = ctl_bd_start;
+	ctl_skb_start = ctl_bd_start->next;
+	ctl_skb = ctl_skb_start;
+	do {
+		if (ctl_skb->skb) {
+			ret = false;
+			goto unlock;
+		}
+		ctl_bd = ctl_skb->next;
+		ctl_skb = ctl_bd->next;
+	} while (ctl_skb != ctl_skb_start);
+
+unlock:
+	spin_unlock_irqrestore(&ch->lock, flags);
+	return ret;
+}
+
+int wcn36xx_dxe_tx_flush(struct wcn36xx *wcn)
+{
+	int i = 0;
+
+	/* Called with mac80211 queues stopped. Wait for empty HW queues. */
+	do {
+		if (_wcn36xx_dxe_tx_channel_is_empty(&wcn->dxe_tx_l_ch) &&
+		    _wcn36xx_dxe_tx_channel_is_empty(&wcn->dxe_tx_h_ch)) {
+			return 0;
+		}
+		/* This ieee80211_ops callback is specifically allowed to
+		 * sleep.
+		 */
+		usleep_range(1000, 1100);
+	} while (++i < 100);
+
+	return -EBUSY;
+}
+
 int wcn36xx_dxe_init(struct wcn36xx *wcn)
 {
 	int reg_data = 0, ret;
@@ -869,7 +931,6 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 		WCN36XX_DXE_WQ_TX_L);
 
 	wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_REG_CH_EN, &reg_data);
-	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_L);
 
 	/***************************************/
 	/* Init descriptors for TX HIGH channel */
@@ -893,9 +954,6 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 
 	wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_REG_CH_EN, &reg_data);
 
-	/* Enable channel interrupts */
-	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_H);
-
 	/***************************************/
 	/* Init descriptors for RX LOW channel */
 	/***************************************/
@@ -905,7 +963,6 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 		goto out_err_rxl_ch;
 	}
 
-
 	/* For RX we need to preallocated buffers */
 	wcn36xx_dxe_ch_alloc_skb(wcn, &wcn->dxe_rx_l_ch);
 
@@ -928,9 +985,6 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 		WCN36XX_DXE_REG_CTL_RX_L,
 		WCN36XX_DXE_CH_DEFAULT_CTL_RX_L);
 
-	/* Enable channel interrupts */
-	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_L);
-
 	/***************************************/
 	/* Init descriptors for RX HIGH channel */
 	/***************************************/
@@ -962,15 +1016,18 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 		WCN36XX_DXE_REG_CTL_RX_H,
 		WCN36XX_DXE_CH_DEFAULT_CTL_RX_H);
 
-	/* Enable channel interrupts */
-	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_H);
-
 	ret = wcn36xx_dxe_request_irqs(wcn);
 	if (ret < 0)
 		goto out_err_irq;
 
 	timer_setup(&wcn->tx_ack_timer, wcn36xx_dxe_tx_timer, 0);
 
+	/* Enable channel interrupts */
+	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_L);
+	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_H);
+	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_L);
+	wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_H);
+
 	return 0;
 
 out_err_irq:
@@ -987,6 +1044,14 @@ int wcn36xx_dxe_init(struct wcn36xx *wcn)
 
 void wcn36xx_dxe_deinit(struct wcn36xx *wcn)
 {
+	int reg_data = 0;
+
+	/* Disable channel interrupts */
+	wcn36xx_dxe_disable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_H);
+	wcn36xx_dxe_disable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_L);
+	wcn36xx_dxe_disable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_H);
+	wcn36xx_dxe_disable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_L);
+
 	free_irq(wcn->tx_irq, wcn);
 	free_irq(wcn->rx_irq, wcn);
 	del_timer(&wcn->tx_ack_timer);
@@ -996,6 +1061,15 @@ void wcn36xx_dxe_deinit(struct wcn36xx *wcn)
 		wcn->tx_ack_skb = NULL;
 	}
 
+	/* Put the DXE block into reset before freeing memory */
+	reg_data = WCN36XX_DXE_REG_RESET;
+	wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_REG_CSR_RESET, reg_data);
+
 	wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_l_ch);
 	wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_h_ch);
+
+	wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_tx_l_ch);
+	wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_tx_h_ch);
+	wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_rx_l_ch);
+	wcn36xx_dxe_deinit_descs(wcn->dev, &wcn->dxe_rx_h_ch);
 }

drivers/net/wireless/ath/wcn36xx/dxe.h

@@ -466,5 +466,6 @@ int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn,
 			 struct wcn36xx_tx_bd *bd,
 			 struct sk_buff *skb,
 			 bool is_low);
+int wcn36xx_dxe_tx_flush(struct wcn36xx *wcn);
 void wcn36xx_dxe_tx_ack_ind(struct wcn36xx *wcn, u32 status);
 #endif	/* _DXE_H_ */

drivers/net/wireless/ath/wcn36xx/main.c

@@ -402,6 +402,7 @@ static void wcn36xx_change_opchannel(struct wcn36xx *wcn, int ch)
 static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct wcn36xx *wcn = hw->priv;
+	int ret;
 
 	wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
 
@@ -417,17 +418,31 @@ static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
 			 * want to receive/transmit regular data packets, then
 			 * simply stop the scan session and exit PS mode.
 			 */
-			wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
-						wcn->sw_scan_vif);
-			wcn->sw_scan_channel = 0;
+			if (wcn->sw_scan_channel)
+				wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
+			if (wcn->sw_scan_init) {
+				wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
+							wcn->sw_scan_vif);
+			}
 		} else if (wcn->sw_scan) {
 			/* A scan is ongoing, do not change the operating
 			 * channel, but start a scan session on the channel.
 			 */
-			wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN,
-					      wcn->sw_scan_vif);
+			if (wcn->sw_scan_channel)
+				wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
+			if (!wcn->sw_scan_init) {
+				/* This can fail if we are unable to notify the
+				 * operating channel.
+				 */
+				ret = wcn36xx_smd_init_scan(wcn,
+							    HAL_SYS_MODE_SCAN,
+							    wcn->sw_scan_vif);
+				if (ret) {
+					mutex_unlock(&wcn->conf_mutex);
+					return -EIO;
+				}
+			}
 			wcn36xx_smd_start_scan(wcn, ch);
-			wcn->sw_scan_channel = ch;
 		} else {
 			wcn36xx_change_opchannel(wcn, ch);
 		}
@@ -707,6 +722,8 @@ static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw,
 	struct wcn36xx *wcn = hw->priv;
 	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
 
+	wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_start");
+
 	wcn->sw_scan = true;
 	wcn->sw_scan_vif = vif;
 	wcn->sw_scan_channel = 0;
@@ -721,8 +738,15 @@ static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw,
 {
 	struct wcn36xx *wcn = hw->priv;
 
+	wcn36xx_dbg(WCN36XX_DBG_MAC, "sw_scan_complete");
+
 	/* ensure that any scan session is finished */
-	wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN, wcn->sw_scan_vif);
+	if (wcn->sw_scan_channel)
+		wcn36xx_smd_end_scan(wcn, wcn->sw_scan_channel);
+	if (wcn->sw_scan_init) {
+		wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN,
+					wcn->sw_scan_vif);
+	}
 	wcn->sw_scan = false;
 	wcn->sw_scan_opchannel = 0;
 }
@@ -1277,6 +1301,16 @@ static void wcn36xx_ipv6_addr_change(struct ieee80211_hw *hw,
 }
 #endif
 
+static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			  u32 queues, bool drop)
+{
+	struct wcn36xx *wcn = hw->priv;
+
+	if (wcn36xx_dxe_tx_flush(wcn)) {
+		wcn36xx_err("Failed to flush hardware tx queues\n");
+	}
+}
+
 static const struct ieee80211_ops wcn36xx_ops = {
 	.start			= wcn36xx_start,
 	.stop			= wcn36xx_stop,
@@ -1304,6 +1338,7 @@ static const struct ieee80211_ops wcn36xx_ops = {
 #if IS_ENABLED(CONFIG_IPV6)
 	.ipv6_addr_change	= wcn36xx_ipv6_addr_change,
 #endif
+	.flush			= wcn36xx_flush,
 
 	CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
 };

drivers/net/wireless/ath/wcn36xx/smd.c

@@ -722,6 +722,7 @@ int wcn36xx_smd_init_scan(struct wcn36xx *wcn, enum wcn36xx_hal_sys_mode mode,
 		wcn36xx_err("hal_init_scan response failed err=%d\n", ret);
 		goto out;
 	}
+	wcn->sw_scan_init = true;
 out:
 	mutex_unlock(&wcn->hal_mutex);
 	return ret;
@@ -752,6 +753,7 @@ int wcn36xx_smd_start_scan(struct wcn36xx *wcn, u8 scan_channel)
 		wcn36xx_err("hal_start_scan response failed err=%d\n", ret);
 		goto out;
 	}
+	wcn->sw_scan_channel = scan_channel;
 out:
 	mutex_unlock(&wcn->hal_mutex);
 	return ret;
@@ -782,6 +784,7 @@ int wcn36xx_smd_end_scan(struct wcn36xx *wcn, u8 scan_channel)
 		wcn36xx_err("hal_end_scan response failed err=%d\n", ret);
 		goto out;
 	}
+	wcn->sw_scan_channel = 0;
 out:
 	mutex_unlock(&wcn->hal_mutex);
 	return ret;
@@ -823,6 +826,7 @@ int wcn36xx_smd_finish_scan(struct wcn36xx *wcn,
 		wcn36xx_err("hal_finish_scan response failed err=%d\n", ret);
 		goto out;
 	}
+	wcn->sw_scan_init = false;
 out:
 	mutex_unlock(&wcn->hal_mutex);
 	return ret;
@@ -2732,7 +2736,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
 				    tmp->bss_index);
 			vif = wcn36xx_priv_to_vif(tmp);
-			ieee80211_connection_loss(vif);
+			ieee80211_beacon_loss(vif);
 		}
 		return 0;
 	}
@@ -2747,7 +2751,7 @@ static int wcn36xx_smd_missed_beacon_ind(struct wcn36xx *wcn,
 			wcn36xx_dbg(WCN36XX_DBG_HAL, "beacon missed bss_index %d\n",
 				    rsp->bss_index);
 			vif = wcn36xx_priv_to_vif(tmp);
-			ieee80211_connection_loss(vif);
+			ieee80211_beacon_loss(vif);
 			return 0;
 		}
 	}

drivers/net/wireless/ath/wcn36xx/txrx.c

@@ -272,7 +272,6 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
 	const struct wcn36xx_rate *rate;
 	struct ieee80211_hdr *hdr;
 	struct wcn36xx_rx_bd *bd;
-	struct ieee80211_supported_band *sband;
 	u16 fc, sn;
 
 	/*
@@ -314,8 +313,6 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
 	fc = __le16_to_cpu(hdr->frame_control);
 	sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
 
-	status.freq = WCN36XX_CENTER_FREQ(wcn);
-	status.band = WCN36XX_BAND(wcn);
 	status.mactime = 10;
 	status.signal = -get_rssi0(bd);
 	status.antenna = 1;
@@ -327,18 +324,36 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
 
 	wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag);
 
+	if (bd->scan_learn) {
+		/* If packet originate from hardware scanning, extract the
+		 * band/channel from bd descriptor.
+		 */
+		u8 hwch = (bd->reserved0 << 4) + bd->rx_ch;
+
+		if (bd->rf_band != 1 && hwch <= sizeof(ab_rx_ch_map) && hwch >= 1) {
+			status.band = NL80211_BAND_5GHZ;
+			status.freq = ieee80211_channel_to_frequency(ab_rx_ch_map[hwch - 1],
+								     status.band);
+		} else {
+			status.band = NL80211_BAND_2GHZ;
+			status.freq = ieee80211_channel_to_frequency(hwch, status.band);
+		}
+	} else {
+		status.band = WCN36XX_BAND(wcn);
+		status.freq = WCN36XX_CENTER_FREQ(wcn);
+	}
+
 	if (bd->rate_id < ARRAY_SIZE(wcn36xx_rate_table)) {
 		rate = &wcn36xx_rate_table[bd->rate_id];
 		status.encoding = rate->encoding;
 		status.enc_flags = rate->encoding_flags;
 		status.bw = rate->bw;
 		status.rate_idx = rate->mcs_or_legacy_index;
-		sband = wcn->hw->wiphy->bands[status.band];
 		status.nss = 1;
 
 		if (status.band == NL80211_BAND_5GHZ &&
 		    status.encoding == RX_ENC_LEGACY &&
-		    status.rate_idx >= sband->n_bitrates) {
+		    status.rate_idx >= 4) {
 			/* no dsss rates in 5Ghz rates table */
 			status.rate_idx -= 4;
 		}
@@ -353,22 +368,6 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
 	    ieee80211_is_probe_resp(hdr->frame_control))
 		status.boottime_ns = ktime_get_boottime_ns();
 
-	if (bd->scan_learn) {
-		/* If packet originates from hardware scanning, extract the
-		 * band/channel from bd descriptor.
-		 */
-		u8 hwch = (bd->reserved0 << 4) + bd->rx_ch;
-
-		if (bd->rf_band != 1 && hwch <= sizeof(ab_rx_ch_map) && hwch >= 1) {
-			status.band = NL80211_BAND_5GHZ;
-			status.freq = ieee80211_channel_to_frequency(ab_rx_ch_map[hwch - 1],
-								     status.band);
-		} else {
-			status.band = NL80211_BAND_2GHZ;
-			status.freq = ieee80211_channel_to_frequency(hwch, status.band);
-		}
-	}
-
 	memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
 
 	if (ieee80211_is_beacon(hdr->frame_control)) {

drivers/net/wireless/ath/wcn36xx/wcn36xx.h

@@ -248,6 +248,7 @@ struct wcn36xx {
 	struct cfg80211_scan_request *scan_req;
 	bool			sw_scan;
 	u8			sw_scan_opchannel;
+	bool			sw_scan_init;
 	u8			sw_scan_channel;
 	struct ieee80211_vif	*sw_scan_vif;
 	struct mutex		scan_lock;