diff options
Diffstat (limited to 'drivers/misc/mei/hw.h')
| -rw-r--r-- | drivers/misc/mei/hw.h | 73 |
1 files changed, 67 insertions, 6 deletions
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 5c8286b40b62..65655925791a 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -28,8 +28,6 @@ #define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */ #define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */ -#define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */ - #define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */ #define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */ #define MEI_HBM_TIMEOUT 1 /* 1 second */ @@ -82,6 +80,12 @@ #define HBM_MINOR_VERSION_OS 0 #define HBM_MAJOR_VERSION_OS 2 +/* + * MEI version with dma ring support + */ +#define HBM_MINOR_VERSION_DR 1 +#define HBM_MAJOR_VERSION_DR 2 + /* Host bus message command opcode */ #define MEI_HBM_CMD_OP_MSK 0x7f /* Host bus message command RESPONSE */ @@ -124,6 +128,9 @@ #define MEI_HBM_NOTIFY_RES_CMD 0x90 #define MEI_HBM_NOTIFICATION_CMD 0x11 +#define MEI_HBM_DMA_SETUP_REQ_CMD 0x12 +#define MEI_HBM_DMA_SETUP_RES_CMD 0x92 + /* * MEI Stop Reason * used by hbm_host_stop_request.reason @@ -189,19 +196,27 @@ enum mei_cl_disconnect_status { MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS }; -/* - * MEI BUS Interface Section +/** + * struct mei_msg_hdr - MEI BUS Interface Section + * + * @me_addr: device address + * @host_addr: host address + * @length: message length + * @reserved: reserved + * @dma_ring: message is on dma ring + * @internal: message is internal + * @msg_complete: last packet of the message */ struct mei_msg_hdr { u32 me_addr:8; u32 host_addr:8; u32 length:9; - u32 reserved:5; + u32 reserved:4; + u32 dma_ring:1; u32 internal:1; u32 msg_complete:1; } __packed; - struct mei_bus_message { u8 hbm_cmd; u8 data[0]; @@ -451,4 +466,50 @@ struct hbm_notification { u8 reserved[1]; } __packed; +/** + * struct hbm_dma_mem_dscr - dma ring + * + * @addr_hi: the high 32bits of 64 bit address + * @addr_lo: the low 32bits of 64 bit address + * @size : size in bytes (must be power of 2) + */ +struct hbm_dma_mem_dscr { + u32 addr_hi; + u32 addr_lo; + u32 size; +} __packed; + +enum { + DMA_DSCR_HOST = 0, + DMA_DSCR_DEVICE = 1, + DMA_DSCR_CTRL = 2, + DMA_DSCR_NUM, +}; + +/** + * struct hbm_dma_setup_request - dma setup request + * + * @hbm_cmd: bus message command header + * @reserved: reserved for alignment + * @dma_dscr: dma descriptor for HOST, DEVICE, and CTRL + */ +struct hbm_dma_setup_request { + u8 hbm_cmd; + u8 reserved[3]; + struct hbm_dma_mem_dscr dma_dscr[DMA_DSCR_NUM]; +} __packed; + +/** + * struct hbm_dma_setup_response - dma setup response + * + * @hbm_cmd: bus message command header + * @status: 0 on success; otherwise DMA setup failed. + * @reserved: reserved for alignment + */ +struct hbm_dma_setup_response { + u8 hbm_cmd; + u8 status; + u8 reserved[2]; +} __packed; + #endif |