Linux-libre 4.5-gnu

4 files changed, 58 insertions, 23 deletions

diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c
index f8dfa05b2..8643801f3 100644
--- a/drivers/net/wireless/ath/wcn36xx/dxe.c
+++ b/drivers/net/wireless/ath/wcn36xx/dxe.c
@@ -474,36 +474,37 @@ static int wcn36xx_rx_handle_packets(struct wcn36xx *wcn,
 	struct wcn36xx_dxe_desc *dxe = ctl->desc;
 	dma_addr_t  dma_addr;
 	struct sk_buff *skb;
+	int ret = 0, int_mask;
+	u32 value;
+
+	if (ch->ch_type == WCN36XX_DXE_CH_RX_L) {
+		value = WCN36XX_DXE_CTRL_RX_L;
+		int_mask = WCN36XX_DXE_INT_CH1_MASK;
+	} else {
+		value = WCN36XX_DXE_CTRL_RX_H;
+		int_mask = WCN36XX_DXE_INT_CH3_MASK;
+	}
 
 	while (!(dxe->ctrl & WCN36XX_DXE_CTRL_VALID_MASK)) {
 		skb = ctl->skb;
 		dma_addr = dxe->dst_addr_l;
-		wcn36xx_dxe_fill_skb(wcn->dev, ctl);
-
-		switch (ch->ch_type) {
-		case WCN36XX_DXE_CH_RX_L:
-			dxe->ctrl = WCN36XX_DXE_CTRL_RX_L;
-			wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_ENCH_ADDR,
-						   WCN36XX_DXE_INT_CH1_MASK);
-			break;
-		case WCN36XX_DXE_CH_RX_H:
-			dxe->ctrl = WCN36XX_DXE_CTRL_RX_H;
-			wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_ENCH_ADDR,
-						   WCN36XX_DXE_INT_CH3_MASK);
-			break;
-		default:
-			wcn36xx_warn("Unknown channel\n");
-		}
-
-		dma_unmap_single(wcn->dev, dma_addr, WCN36XX_PKT_SIZE,
-				 DMA_FROM_DEVICE);
-		wcn36xx_rx_skb(wcn, skb);
+		ret = wcn36xx_dxe_fill_skb(wcn->dev, ctl);
+		if (0 == ret) {
+			/* new skb allocation ok. Use the new one and queue
+			 * the old one to network system.
+			 */
+			dma_unmap_single(wcn->dev, dma_addr, WCN36XX_PKT_SIZE,
+					DMA_FROM_DEVICE);
+			wcn36xx_rx_skb(wcn, skb);
+		} /* else keep old skb not submitted and use it for rx DMA */
+
+		dxe->ctrl = value;
 		ctl = ctl->next;
 		dxe = ctl->desc;
 	}
+	wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_ENCH_ADDR, int_mask);
 
 	ch->head_blk_ctl = ctl;
-
 	return 0;
 }
 
diff --git a/drivers/net/wireless/ath/wcn36xx/hal.h b/drivers/net/wireless/ath/wcn36xx/hal.h
index a1f1127d7..b947de0fb 100644
--- a/drivers/net/wireless/ath/wcn36xx/hal.h
+++ b/drivers/net/wireless/ath/wcn36xx/hal.h
@@ -345,6 +345,8 @@ enum wcn36xx_hal_host_msg_type {
 	WCN36XX_HAL_DHCP_START_IND = 189,
 	WCN36XX_HAL_DHCP_STOP_IND = 190,
 
+	WCN36XX_HAL_AVOID_FREQ_RANGE_IND = 233,
+
 	WCN36XX_HAL_MSG_MAX = WCN36XX_HAL_MSG_TYPE_MAX_ENUM_SIZE
 };
 
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index 9a132d99a..936938c74 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -302,6 +302,22 @@ static int wcn36xx_smd_rsp_status_check(void *buf, size_t len)
 	return 0;
 }
 
+static int wcn36xx_smd_rsp_status_check_v2(struct wcn36xx *wcn, void *buf,
+					     size_t len)
+{
+	struct wcn36xx_fw_msg_status_rsp_v2 *rsp;
+
+	if (len < sizeof(struct wcn36xx_hal_msg_header) + sizeof(*rsp))
+		return wcn36xx_smd_rsp_status_check(buf, len);
+
+	rsp = buf + sizeof(struct wcn36xx_hal_msg_header);
+
+	if (WCN36XX_FW_MSG_RESULT_SUCCESS != rsp->status)
+		return rsp->status;
+
+	return 0;
+}
+
 int wcn36xx_smd_load_nv(struct wcn36xx *wcn)
 {
 	struct nv_data *nv_d;
@@ -1582,7 +1598,8 @@ int wcn36xx_smd_remove_bsskey(struct wcn36xx *wcn,
 		wcn36xx_err("Sending hal_remove_bsskey failed\n");
 		goto out;
 	}
-	ret = wcn36xx_smd_rsp_status_check(wcn->hal_buf, wcn->hal_rsp_len);
+	ret = wcn36xx_smd_rsp_status_check_v2(wcn, wcn->hal_buf,
+					      wcn->hal_rsp_len);
 	if (ret) {
 		wcn36xx_err("hal_remove_bsskey response failed err=%d\n", ret);
 		goto out;
@@ -1951,7 +1968,8 @@ int wcn36xx_smd_trigger_ba(struct wcn36xx *wcn, u8 sta_index)
 		wcn36xx_err("Sending hal_trigger_ba failed\n");
 		goto out;
 	}
-	ret = wcn36xx_smd_rsp_status_check(wcn->hal_buf, wcn->hal_rsp_len);
+	ret = wcn36xx_smd_rsp_status_check_v2(wcn, wcn->hal_buf,
+						wcn->hal_rsp_len);
 	if (ret) {
 		wcn36xx_err("hal_trigger_ba response failed err=%d\n", ret);
 		goto out;
@@ -2128,6 +2146,8 @@ static void wcn36xx_smd_rsp_process(struct wcn36xx *wcn, void *buf, size_t len)
 		complete(&wcn->hal_rsp_compl);
 		break;
 
+	case WCN36XX_HAL_COEX_IND:
+	case WCN36XX_HAL_AVOID_FREQ_RANGE_IND:
 	case WCN36XX_HAL_OTA_TX_COMPL_IND:
 	case WCN36XX_HAL_MISSED_BEACON_IND:
 	case WCN36XX_HAL_DELETE_STA_CONTEXT_IND:
@@ -2174,6 +2194,9 @@ static void wcn36xx_ind_smd_work(struct work_struct *work)
 	msg_header = (struct wcn36xx_hal_msg_header *)hal_ind_msg->msg;
 
 	switch (msg_header->msg_type) {
+	case WCN36XX_HAL_COEX_IND:
+	case WCN36XX_HAL_AVOID_FREQ_RANGE_IND:
+		break;
 	case WCN36XX_HAL_OTA_TX_COMPL_IND:
 		wcn36xx_smd_tx_compl_ind(wcn,
 					 hal_ind_msg->msg,
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.h b/drivers/net/wireless/ath/wcn36xx/smd.h
index 008d03423..8361f9e39 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.h
+++ b/drivers/net/wireless/ath/wcn36xx/smd.h
@@ -44,6 +44,15 @@ struct wcn36xx_fw_msg_status_rsp {
 	u32	status;
 } __packed;
 
+/* wcn3620 returns this for tigger_ba */
+
+struct wcn36xx_fw_msg_status_rsp_v2 {
+	u8	bss_id[6];
+	u32	status __packed;
+	u16	count_following_candidates __packed;
+	/* candidate list follows */
+};
+
 struct wcn36xx_hal_ind_msg {
 	struct list_head list;
 	u8 *msg;