qcacmn: Add WMI interface support for Direct Buffer Rx module

Direct Buffer Receive provides the driver with a mechanism by which target
can transfer information directly into host memory via DMA.

Add support for the following service/events/commands -
1. WMI_SERVICE_SUPPORT_DMA
2. WMI_DMA_CAPABILITIES as part of WMI_SERVICE_READY_EXT_EVENTID
3. WMI_PDEV_DMA_RING_CFG_REQ_CMDID
4. WMI_PDEV_DMA_RING_BUF_RELEASE_EVENTID
5. WMI_DMA_BUF_RELEASE_ENTRY

Change-Id: I3949026b4542565c49bb538b9545ea607690c793
CRs-Fixed: 2158304

wmi_unified_api.h

@@ -767,6 +767,16 @@ QDF_STATUS wmi_unified_oem_dma_ring_cfg(void *wmi_hdl,
 				wmi_oem_dma_ring_cfg_req_fixed_param *cfg);
 #endif
 
+/**
+ * wmi_unified_dbr_ring_cfg: Configure direct buffer rx rings
+ * @wmi_hdl: WMI handle
+ * @cfg: pointer to direct buffer rx config request
+ *
+ * Return: QDF status of operation
+ */
+QDF_STATUS wmi_unified_dbr_ring_cfg(void *wmi_hdl,
+				struct direct_buf_rx_cfg_req *cfg);
+
 QDF_STATUS wmi_unified_start_oem_data_cmd(void *wmi_hdl,
 			  uint32_t data_len,
 			  uint8_t *data);
@@ -1543,6 +1553,51 @@ QDF_STATUS wmi_extract_reg_cap_service_ready_ext(
 			void *wmi_hdl,
 			uint8_t *evt_buf, uint8_t phy_idx,
 			struct wlan_psoc_host_hal_reg_capabilities_ext *param);
+
+/**
+ * wmi_extract_dbr_ring_cap_service_ready_ext: Extract direct buffer rx
+ *                                             capability received through
+ *                                             extended service ready event
+ * @wmi_hdl: WMI handle
+ * @evt_buf: Event buffer
+ * @idx: Index of the module for which capability is received
+ * @param: Pointer to direct buffer rx ring cap struct
+ *
+ * Return: QDF status of operation
+ */
+QDF_STATUS wmi_extract_dbr_ring_cap_service_ready_ext(
+			void *wmi_hdl,
+			uint8_t *evt_buf, uint8_t idx,
+			struct wlan_psoc_host_dbr_ring_caps *param);
+
+/**
+ * wmi_extract_dbr_buf_release_fixed : Extract direct buffer rx fixed param
+ *                                     from buffer release event
+ * @wmi_hdl: WMI handle
+ * @evt_buf: Event buffer
+ * @param: Pointer to direct buffer rx response struct
+ *
+ * Return: QDF status of operation
+ */
+QDF_STATUS wmi_extract_dbr_buf_release_fixed(
+			void *wmi_hdl,
+			uint8_t *evt_buf,
+			struct direct_buf_rx_rsp *param);
+
+/**
+ * wmi_extract_dbr_buf_release_entry: Extract direct buffer rx buffer tlv
+ *
+ * @wmi_hdl: WMI handle
+ * @evt_buf: Event buffer
+ * @idx: Index of the module for which capability is received
+ * @param: Pointer to direct buffer rx entry
+ *
+ * Return: QDF status of operation
+ */
+QDF_STATUS wmi_extract_dbr_buf_release_entry(
+			void *wmi_hdl,
+			uint8_t *evt_buf, uint8_t idx,
+			struct direct_buf_rx_entry *param);
 QDF_STATUS wmi_extract_pdev_utf_event(void *wmi_hdl,
 				      uint8_t *evt_buf,
 				      struct wmi_host_pdev_utf_event *param);

wmi_unified_param.h

@@ -5614,6 +5614,7 @@ typedef enum {
 	wmi_mgmt_tx_bundle_completion_event_id,
 	wmi_radio_tx_power_level_stats_event_id,
 	wmi_report_stats_event_id,
+	wmi_dma_buf_release_event_id,
 
 	wmi_events_max,
 } wmi_conv_event_id;
@@ -6025,6 +6026,7 @@ typedef enum {
 	wmi_service_widebw_scan,
 	wmi_service_bcn_offload_start_stop_support,
 	wmi_service_offchan_data_tid_support,
+	wmi_service_support_dma,
 
 	wmi_services_max,
 } wmi_conv_service_ids;
@@ -8168,4 +8170,101 @@ struct wdsentry {
 	A_UINT32 flags;
 };
 
+#define WMI_HOST_DBR_RING_ADDR_LO_S 0
+#define WMI_HOST_DBR_RING_ADDR_LO 0xffffffff
+
+#define WMI_HOST_DBR_RING_ADDR_LO_GET(dword) \
+			WMI_HOST_F_MS(dword, WMI_HOST_DBR_RING_ADDR_LO)
+#define WMI_HOST_DBR_RING_ADDR_LO_SET(dword, val) \
+			WMI_HOST_F_RMW(dword, val, WMI_HOST_DBR_RING_ADDR_LO)
+
+#define WMI_HOST_DBR_RING_ADDR_HI_S 0
+#define WMI_HOST_DBR_RING_ADDR_HI 0xf
+
+#define WMI_HOST_DBR_RING_ADDR_HI_GET(dword) \
+			WMI_HOST_F_MS(dword, WMI_HOST_DBR_RING_ADDR_HI)
+#define WMI_HOST_DBR_RING_ADDR_HI_SET(dword, val) \
+			WMI_HOST_F_RMW(dword, val, WMI_HOST_DBR_RING_ADDR_HI)
+
+#define WMI_HOST_DBR_DATA_ADDR_LO_S 0
+#define WMI_HOST_DBR_DATA_ADDR_LO 0xffffffff
+
+#define WMI_HOST_DBR_DATA_ADDR_LO_GET(dword) \
+			WMI_HOST_F_MS(dword, WMI_HOST_DBR_DATA_ADDR_LO)
+#define WMI_HOST_DBR_DATA_ADDR_LO_SET(dword, val) \
+			WMI_HOST_F_RMW(dword, val, WMI_HOST_DBR_DATA_ADDR_LO)
+
+#define WMI_HOST_DBR_DATA_ADDR_HI_S 0
+#define WMI_HOST_DBR_DATA_ADDR_HI 0xf
+
+#define WMI_HOST_DBR_DATA_ADDR_HI_GET(dword) \
+			WMI_HOST_F_MS(dword, WMI_HOST_DBR_DATA_ADDR_HI)
+#define WMI_HOST_DBR_DATA_ADDR_HI_SET(dword, val) \
+			WMI_HOST_F_RMW(dword, val, WMI_HOST_DBR_DATA_ADDR_HI)
+
+#define WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA_S 12
+#define WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA 0xfffff
+
+#define WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA_GET(dword) \
+		WMI_HOST_F_MS(dword, WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA)
+#define WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA_SET(dword, val) \
+		WMI_HOST_F_RMW(dword, val, WMI_HOST_DBR_DATA_ADDR_HI_HOST_DATA)
+
+/**
+ * struct direct_buf_rx_entry: direct buffer rx release entry structure
+ *
+ * @addr_lo: LSB 32-bits of the buffer
+ * @addr_hi: MSB 32-bits of the buffer
+ * @len: Length of the buffer
+ */
+struct direct_buf_rx_entry {
+	uint32_t paddr_lo;
+	uint32_t paddr_hi;
+	uint32_t len;
+};
+
+/**
+ * struct direct_buf_rx_rsp: direct buffer rx response structure
+ *
+ * @pdev_id: Index of the pdev for which response is received
+ * @mod_mod: Index of the module for which respone is received
+ * @num_buf_release_entry: Number of buffers released through event
+ * @dbr_entries: Pointer to direct buffer rx entry struct
+ */
+struct direct_buf_rx_rsp {
+	uint32_t pdev_id;
+	uint32_t mod_id;
+	uint32_t num_buf_release_entry;
+	struct direct_buf_rx_entry *dbr_entries;
+};
+
+/**
+ * struct direct_buf_rx_cfg_req: direct buffer rx config request structure
+ *
+ * @pdev_id: Index of the pdev for which response is received
+ * @mod_id: Index of the module for which respone is received
+ * @base_paddr_lo: Lower 32bits of ring base address
+ * @base_paddr_hi: Higher 32bits of ring base address
+ * @head_idx_paddr_lo: Lower 32bits of head idx register address
+ * @head_idx_paddr_hi: Higher 32bits of head idx register address
+ * @tail_idx_paddr_lo: Lower 32bits of tail idx register address
+ * @tail_idx_paddr_hi: Higher 32bits of tail idx register address
+ * @buf_size: Size of the buffer for each pointer in the ring
+ * @num_elems: Number of pointers allocated and part of the source ring
+ */
+struct direct_buf_rx_cfg_req {
+	uint32_t pdev_id;
+	uint32_t mod_id;
+	uint32_t base_paddr_lo;
+	uint32_t base_paddr_hi;
+	uint32_t head_idx_paddr_lo;
+	uint32_t head_idx_paddr_hi;
+	uint32_t tail_idx_paddr_hi;
+	uint32_t tail_idx_paddr_lo;
+	uint32_t buf_size;
+	uint32_t num_elems;
+	uint32_t event_timeout_ms;
+	uint32_t num_resp_per_event;
+};
+
 #endif /* _WMI_UNIFIED_PARAM_H_ */

wmi_unified_priv.h

@@ -628,6 +628,9 @@ QDF_STATUS (*send_oem_dma_cfg_cmd)(wmi_unified_t wmi_handle,
 				   wmi_oem_dma_ring_cfg_req_fixed_param *cfg);
 #endif
 
+QDF_STATUS (*send_dbr_cfg_cmd)(wmi_unified_t wmi_handle,
+				   struct direct_buf_rx_cfg_req *cfg);
+
 QDF_STATUS (*send_start_oem_data_cmd)(wmi_unified_t wmi_handle,
 			  uint32_t data_len,
 			  uint8_t *data);
@@ -1354,6 +1357,21 @@ QDF_STATUS (*extract_reg_cap_service_ready_ext)(
 			uint8_t *evt_buf, uint8_t phy_idx,
 			struct wlan_psoc_host_hal_reg_capabilities_ext *param);
 
+QDF_STATUS (*extract_dbr_ring_cap_service_ready_ext)(
+			wmi_unified_t wmi_handle,
+			uint8_t *evt_buf, uint8_t idx,
+			struct wlan_psoc_host_dbr_ring_caps *param);
+
+QDF_STATUS (*extract_dbr_buf_release_fixed)(
+			wmi_unified_t wmi_handle,
+			uint8_t *evt_buf,
+			struct direct_buf_rx_rsp *param);
+
+QDF_STATUS (*extract_dbr_buf_release_entry)(
+			wmi_unified_t wmi_handle,
+			uint8_t *evt_buf, uint8_t idx,
+			struct direct_buf_rx_entry *param);
+
 QDF_STATUS (*extract_pdev_utf_event)(wmi_unified_t wmi_hdl,
 				     uint8_t *evt_buf,
 				     struct wmi_host_pdev_utf_event *param);