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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2020-08-18 14:51:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 15:44:43 +0200 |
| commit | e5cab1f974f2bfc286ad17d7839a569c79bb7c70 (patch) | |
| tree | df574dd58b41027cdec69e99c08f626554a16e79 /drivers/misc/mei/hw.h | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| download | linux-e5cab1f974f2bfc286ad17d7839a569c79bb7c70.tar.gz | |
mei: hbm: add capabilities message
The new capabilities command in HBM version 2.2 allows
performing capabilities handshake between the firmware
and the host driver. The driver requests a capability
by setting the appropriate bit in 24bit wide bitmask and
the fw responses with the bit set providing the requested
capability is supported.
Bump copyright year in affected files.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20200818115147.2567012-2-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw.h')
| -rw-r--r-- | drivers/misc/mei/hw.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 26fa92cb7f7a..539d89ba1c61 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -76,6 +76,12 @@ #define HBM_MINOR_VERSION_DR 1 #define HBM_MAJOR_VERSION_DR 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 +127,9 @@ #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 @@ -533,4 +542,26 @@ struct hbm_dma_ring_ctrl { u32 reserved4; } __packed; +/** + * 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 |