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| author | Tomas Winkler <tomas.winkler@intel.com> | 2018-07-31 09:35:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-02 10:18:30 +0200 |
| commit | 9d89ddfc624649e200aeec57912635dbe259d07b (patch) | |
| tree | 9764c468a1304be16eec3c2a5d98ee725ed4c900 /drivers/misc | |
| parent | ee7aba5aba70dd98fc05697723167ebb858e7aba (diff) | |
| download | linux-9d89ddfc624649e200aeec57912635dbe259d07b.tar.gz linux-9d89ddfc624649e200aeec57912635dbe259d07b.tar.bz2 linux-9d89ddfc624649e200aeec57912635dbe259d07b.zip | |
mei: hbm: introduce dma bit in the message header
Add dma_ring bit in the mei message header for conveying
that the message data itself are on the dma ring.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/client.c | 1 | ||||
| -rw-r--r-- | drivers/misc/mei/hbm.c | 1 | ||||
| -rw-r--r-- | drivers/misc/mei/hw.h | 16 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 4 |
4 files changed, 16 insertions, 6 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 0a9173827461..4ab6251d418e 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -1551,6 +1551,7 @@ static void mei_msg_hdr_init(struct mei_msg_hdr *mei_hdr, struct mei_cl_cb *cb) mei_hdr->length = 0; mei_hdr->reserved = 0; mei_hdr->msg_complete = 0; + mei_hdr->dma_ring = 0; mei_hdr->internal = cb->internal; } diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 8b3fd9ff6566..b0086c4aefe4 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -145,6 +145,7 @@ static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length) hdr->me_addr = 0; hdr->length = length; hdr->msg_complete = 1; + hdr->dma_ring = 0; hdr->reserved = 0; hdr->internal = 0; } diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index 76fb502e6f71..5fb8844a6db5 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -190,19 +190,27 @@ 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]; diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 06fb5fc67fe9..975afaa38a66 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -714,10 +714,10 @@ static inline void mei_dbgfs_deregister(struct mei_device *dev) {} int mei_register(struct mei_device *dev, struct device *parent); void mei_deregister(struct mei_device *dev); -#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d internal=%1d comp=%1d" +#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d dma=%1d internal=%1d comp=%1d" #define MEI_HDR_PRM(hdr) \ (hdr)->host_addr, (hdr)->me_addr, \ - (hdr)->length, (hdr)->internal, (hdr)->msg_complete + (hdr)->length, (hdr)->dma_ring, (hdr)->internal, (hdr)->msg_complete ssize_t mei_fw_status2str(struct mei_fw_status *fw_sts, char *buf, size_t len); /** |