diff options
Diffstat (limited to 'drivers/misc/mei/hw.h')
| -rw-r--r-- | drivers/misc/mei/hw.h | 152 |
1 files changed, 145 insertions, 7 deletions
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 26fa92cb7f7a..df2fb9520dd8 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -25,7 +25,7 @@ /* * MEI Version */ -#define HBM_MINOR_VERSION 1 +#define HBM_MINOR_VERSION 2 #define HBM_MAJOR_VERSION 2 /* @@ -76,6 +76,18 @@ #define HBM_MINOR_VERSION_DR 1 #define HBM_MAJOR_VERSION_DR 2 +/* + * MEI version with vm tag support + */ +#define HBM_MINOR_VERSION_VT 2 +#define HBM_MAJOR_VERSION_VT 2 + +/* + * MEI version with capabilities message support + */ +#define HBM_MINOR_VERSION_CAP 2 +#define HBM_MAJOR_VERSION_CAP 2 + /* Host bus message command opcode */ #define MEI_HBM_CMD_OP_MSK 0x7f /* Host bus message command RESPONSE */ @@ -121,6 +133,9 @@ #define MEI_HBM_DMA_SETUP_REQ_CMD 0x12 #define MEI_HBM_DMA_SETUP_RES_CMD 0x92 +#define MEI_HBM_CAPABILITIES_REQ_CMD 0x13 +#define MEI_HBM_CAPABILITIES_RES_CMD 0x93 + /* * MEI Stop Reason * used by hbm_host_stop_request.reason @@ -182,17 +197,103 @@ enum mei_cl_connect_status { /* * Client Disconnect Status */ -enum mei_cl_disconnect_status { +enum mei_cl_disconnect_status { MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS }; /** + * enum mei_ext_hdr_type - extended header type used in + * extended header TLV + * + * @MEI_EXT_HDR_NONE: sentinel + * @MEI_EXT_HDR_VTAG: vtag header + */ +enum mei_ext_hdr_type { + MEI_EXT_HDR_NONE = 0, + MEI_EXT_HDR_VTAG = 1, +}; + +/** + * struct mei_ext_hdr - extend header descriptor (TLV) + * @type: enum mei_ext_hdr_type + * @length: length excluding descriptor + * @ext_payload: payload of the specific extended header + * @hdr: place holder for actual header + */ +struct mei_ext_hdr { + u8 type; + u8 length; + u8 ext_payload[2]; + u8 hdr[]; +}; + +/** + * struct mei_ext_meta_hdr - extend header meta data + * @count: number of headers + * @size: total size of the extended header list excluding meta header + * @reserved: reserved + * @hdrs: extended headers TLV list + */ +struct mei_ext_meta_hdr { + u8 count; + u8 size; + u8 reserved[2]; + struct mei_ext_hdr hdrs[]; +}; + +/* + * Extended header iterator functions + */ +/** + * mei_ext_hdr - extended header iterator begin + * + * @meta: meta header of the extended header list + * + * Return: + * The first extended header + */ +static inline struct mei_ext_hdr *mei_ext_begin(struct mei_ext_meta_hdr *meta) +{ + return meta->hdrs; +} + +/** + * mei_ext_last - check if the ext is the last one in the TLV list + * + * @meta: meta header of the extended header list + * @ext: a meta header on the list + * + * Return: true if ext is the last header on the list + */ +static inline bool mei_ext_last(struct mei_ext_meta_hdr *meta, + struct mei_ext_hdr *ext) +{ + return (u8 *)ext >= (u8 *)meta + sizeof(*meta) + (meta->size * 4); +} + +/** + *mei_ext_next - following extended header on the TLV list + * + * @ext: current extend header + * + * Context: The function does not check for the overflows, + * one should call mei_ext_last before. + * + * Return: The following extend header after @ext + */ +static inline struct mei_ext_hdr *mei_ext_next(struct mei_ext_hdr *ext) +{ + return (struct mei_ext_hdr *)(ext->hdr + (ext->length * 4)); +} + +/** * struct mei_msg_hdr - MEI BUS Interface Section * * @me_addr: device address * @host_addr: host address * @length: message length * @reserved: reserved + * @extended: message has extended header * @dma_ring: message is on dma ring * @internal: message is internal * @msg_complete: last packet of the message @@ -202,18 +303,17 @@ struct mei_msg_hdr { u32 me_addr:8; u32 host_addr:8; u32 length:9; - u32 reserved:4; + u32 reserved:3; + u32 extended:1; u32 dma_ring:1; u32 internal:1; u32 msg_complete:1; - u32 extension[0]; + u32 extension[]; } __packed; /* The length is up to 9 bits */ #define MEI_MSG_MAX_LEN_MASK GENMASK(9, 0) -#define MEI_MSG_HDR_MAX 2 - struct mei_bus_message { u8 hbm_cmd; u8 data[]; @@ -299,13 +399,26 @@ struct hbm_host_enum_response { u8 valid_addresses[32]; } __packed; +/** + * struct mei_client_properties - mei client properties + * + * @protocol_name: guid of the client + * @protocol_version: client protocol version + * @max_number_of_connections: number of possible connections. + * @fixed_address: fixed me address (0 if the client is dynamic) + * @single_recv_buf: 1 if all connections share a single receive buffer. + * @vt_supported: the client support vtag + * @reserved: reserved + * @max_msg_length: MTU of the client + */ struct mei_client_properties { uuid_le protocol_name; u8 protocol_version; u8 max_number_of_connections; u8 fixed_address; u8 single_recv_buf:1; - u8 reserved:7; + u8 vt_supported:1; + u8 reserved:6; u32 max_msg_length; } __packed; @@ -533,4 +646,29 @@ struct hbm_dma_ring_ctrl { u32 reserved4; } __packed; +/* virtual tag supported */ +#define HBM_CAP_VT BIT(0) + +/** + * struct hbm_capability_request - capability request from host to fw + * + * @hbm_cmd : bus message command header + * @capability_requested: bitmask of capabilities requested by host + */ +struct hbm_capability_request { + u8 hbm_cmd; + u8 capability_requested[3]; +} __packed; + +/** + * struct hbm_capability_response - capability response from fw to host + * + * @hbm_cmd : bus message command header + * @capability_granted: bitmask of capabilities granted by FW + */ +struct hbm_capability_response { + u8 hbm_cmd; + u8 capability_granted[3]; +} __packed; + #endif |