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| author |   Tomas Winkler <tomas.winkler@intel.com> | 2020-08-18 14:51:38 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 15:44:43 +0200 |
| commit | 0cd7c01a60f850987e727b8f08683ace9546eac0 (patch) | |
| tree | 9e8ce820fd189df24abe15334d99a65aa6169c07 /drivers/misc/mei/mei_dev.h | |
| parent | mei: add vtag support bit in client properties (diff) | |
| download | linux-dev-0cd7c01a60f850987e727b8f08683ace9546eac0.tar.xz linux-dev-0cd7c01a60f850987e727b8f08683ace9546eac0.zip | |
mei: add support for mei extended header.
Add an extend header beyond existing 4 bytes of the mei message header.
The extension is of variable length, starting with meta header
that contains the number of headers and the overall size of
the extended headers excluding meta header itself followed by
TLV list of extended headers. Currently only supported extension is
the vtag. From the HW perspective the extended headers is already
part of the payload.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Link: https://lore.kernel.org/r/20200818115147.2567012-5-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index f80cc6463f18..fefa5b53a6d0 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -174,6 +174,7 @@ struct mei_cl; * @fop_type: file operation type * @buf: buffer for data associated with the callback * @buf_idx: last read index + * @vtag: virtual tag * @fp: pointer to file structure * @status: io status of the cb * @internal: communication between driver and FW flag @@ -185,6 +186,7 @@ struct mei_cl_cb { enum mei_cb_file_ops fop_type; struct mei_msg_data buf; size_t buf_idx; + u8 vtag; const struct file *fp; int status; u32 internal:1; @@ -413,6 +415,7 @@ struct mei_fw_version { * * @rd_msg_buf : control messages buffer * @rd_msg_hdr : read message header storage + * @rd_msg_hdr_count : how many dwords were already read from header * * @hbuf_is_ready : query if the host host/write buffer is ready * @dr_dscr: DMA ring descriptors: TX, RX, and CTRL @@ -496,7 +499,8 @@ struct mei_device { #endif /* CONFIG_PM */ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; - u32 rd_msg_hdr[MEI_MSG_HDR_MAX]; + u32 rd_msg_hdr[MEI_RD_MSG_BUF_SIZE]; + int rd_msg_hdr_count; /* write buffer */ bool hbuf_is_ready; @@ -750,10 +754,11 @@ 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 dma=%1d internal=%1d comp=%1d" +#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d dma=%1d ext=%1d internal=%1d comp=%1d" #define MEI_HDR_PRM(hdr) \ (hdr)->host_addr, (hdr)->me_addr, \ - (hdr)->length, (hdr)->dma_ring, (hdr)->internal, (hdr)->msg_complete + (hdr)->length, (hdr)->dma_ring, (hdr)->extended, \ + (hdr)->internal, (hdr)->msg_complete ssize_t mei_fw_status2str(struct mei_fw_status *fw_sts, char *buf, size_t len); /** |