diff options
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 377397e1b5a5..685b78ce30a5 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -122,6 +122,19 @@ struct mei_msg_data { unsigned char *data; }; +/** + * struct mei_dma_dscr - dma address descriptor + * + * @vaddr: dma buffer virtual address + * @daddr: dma buffer physical address + * @size : dma buffer size + */ +struct mei_dma_dscr { + void *vaddr; + dma_addr_t daddr; + size_t size; +}; + /* Maximum number of processed FW status registers */ #define MEI_FW_STATUS_MAX 6 /* Minimal buffer for FW status string (8 bytes in dw + space or '\0') */ @@ -409,6 +422,7 @@ struct mei_fw_version { * @rd_msg_hdr : read message header storage * * @hbuf_is_ready : query if the host host/write buffer is ready + * @dr_dscr: DMA ring descriptors: TX, RX, and CTRL * * @version : HBM protocol version in use * @hbm_f_pg_supported : hbm feature pgi protocol @@ -483,11 +497,13 @@ struct mei_device { #endif /* CONFIG_PM */ unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; - u32 rd_msg_hdr; + u32 rd_msg_hdr[MEI_MSG_HDR_MAX]; /* write buffer */ bool hbuf_is_ready; + struct mei_dma_dscr dr_dscr[DMA_DSCR_NUM]; + struct hbm_version version; unsigned int hbm_f_pg_supported:1; unsigned int hbm_f_dc_supported:1; @@ -578,6 +594,14 @@ int mei_restart(struct mei_device *dev); void mei_stop(struct mei_device *dev); void mei_cancel_work(struct mei_device *dev); +int mei_dmam_ring_alloc(struct mei_device *dev); +void mei_dmam_ring_free(struct mei_device *dev); +bool mei_dma_ring_is_allocated(struct mei_device *dev); +void mei_dma_ring_reset(struct mei_device *dev); +void mei_dma_ring_read(struct mei_device *dev, unsigned char *buf, u32 len); +void mei_dma_ring_write(struct mei_device *dev, unsigned char *buf, u32 len); +u32 mei_dma_ring_empty_slots(struct mei_device *dev); + /* * MEI interrupt functions prototype */ |