diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2021-02-06 16:43:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-06 15:48:11 +0100 |
| commit | dfad8742a328598d52d8472ce34fac312f4a5acb (patch) | |
| tree | c0585582f64091cff254918bd35f33f2dc649846 | |
| parent | b7a4804129c7adb3ee9caf5505e3f91fb1467ec3 (diff) | |
| download | linux-dfad8742a328598d52d8472ce34fac312f4a5acb.tar.bz2 | |
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>
| -rw-r--r-- | drivers/misc/mei/hw.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 9577a2cc0733..b10606550613 100644 --- 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 |