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mei: hbm: add client dma hbm messages

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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>
This commit is contained in:
Alexander Usyskin 2021-02-06 16:43:23 +02:00 committed by Greg Kroah-Hartman
parent b7a4804129
commit dfad8742a3
1 changed files with 53 additions and 0 deletions
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53
drivers/misc/mei/hw.h
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@ -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