mei: hbm: add client dma hbm messages

Define structures for client DMA HBM protocol.
The protocol requires passing dma buffer address
and the buffer id.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210206144325.25682-4-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 9577a2c..b106065 100644 (file)
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -142,6 +142,12 @@
 #define MEI_HBM_CAPABILITIES_REQ_CMD        0x13
 #define MEI_HBM_CAPABILITIES_RES_CMD        0x93
 
+#define MEI_HBM_CLIENT_DMA_MAP_REQ_CMD      0x14
+#define MEI_HBM_CLIENT_DMA_MAP_RES_CMD      0x94
+
+#define MEI_HBM_CLIENT_DMA_UNMAP_REQ_CMD    0x15
+#define MEI_HBM_CLIENT_DMA_UNMAP_RES_CMD    0x95
+
 /*
  * MEI Stop Reason
  * used by hbm_host_stop_request.reason
@@ -679,4 +685,51 @@ struct hbm_capability_response {
        u8 capability_granted[3];
 } __packed;
 
+/**
+ * struct hbm_client_dma_map_request - client dma map request from host to fw
+ *
+ * @hbm_cmd: bus message command header
+ * @client_buffer_id: client buffer id
+ * @reserved: reserved
+ * @address_lsb: DMA address LSB
+ * @address_msb: DMA address MSB
+ * @size: DMA size
+ */
+struct hbm_client_dma_map_request {
+       u8 hbm_cmd;
+       u8 client_buffer_id;
+       u8 reserved[2];
+       u32 address_lsb;
+       u32 address_msb;
+       u32 size;
+} __packed;
+
+/**
+ * struct hbm_client_dma_unmap_request
+ *    client dma unmap request from the host to the firmware
+ *
+ * @hbm_cmd: bus message command header
+ * @status: unmap status
+ * @client_buffer_id: client buffer id
+ * @reserved: reserved
+ */
+struct hbm_client_dma_unmap_request {
+       u8 hbm_cmd;
+       u8 status;
+       u8 client_buffer_id;
+       u8 reserved;
+} __packed;
+
+/**
+ * struct hbm_client_dma_response
+ *   client dma unmap response from the firmware to the host
+ *
+ * @hbm_cmd: bus message command header
+ * @status: command status
+ */
+struct hbm_client_dma_response {
+       u8 hbm_cmd;
+       u8 status;
+} __packed;
+
 #endif