diff options
| author | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2023-11-27 13:05:50 +0300 |
|---|---|---|
| committer | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2023-12-14 09:28:53 +0300 |
| commit | 8b786ed8fb089e347af21d13ba5677325fcd4cd8 (patch) | |
| tree | 82cfe6e75878c18107ce5363268c2e63ab8767db | |
| parent | 927105244f8bc48e6841826a5644c6a961e03b5d (diff) | |
| download | linux-8b786ed8fb089e347af21d13ba5677325fcd4cd8.tar.xz | |
bus: mhi: ep: Introduce async read/write callbacks
These callbacks can be implemented by the controller drivers to perform
async read/write operation that increases the throughput.
For aiding the async operation, a completion callback is also introduced.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
| -rw-r--r-- | include/linux/mhi_ep.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h index b96b543bf2f6..14c6e8d3f573 100644 --- a/include/linux/mhi_ep.h +++ b/include/linux/mhi_ep.h @@ -54,11 +54,16 @@ struct mhi_ep_db_info { * @dev_addr: Address of the buffer in endpoint * @host_addr: Address of the bufffer in host * @size: Size of the buffer + * @cb: Callback to be executed by controller drivers after transfer completion (async) + * @cb_buf: Opaque buffer to be passed to the callback */ struct mhi_ep_buf_info { void *dev_addr; u64 host_addr; size_t size; + + void (*cb)(struct mhi_ep_buf_info *buf_info); + void *cb_buf; }; /** @@ -96,6 +101,8 @@ struct mhi_ep_buf_info { * @unmap_free: CB function to unmap and free the allocated memory in endpoint for storing host context * @read_sync: CB function for reading from host memory synchronously * @write_sync: CB function for writing to host memory synchronously + * @read_async: CB function for reading from host memory asynchronously + * @write_async: CB function for writing to host memory asynchronously * @mhi_state: MHI Endpoint state * @max_chan: Maximum channels supported by the endpoint controller * @mru: MRU (Maximum Receive Unit) value of the endpoint controller @@ -151,6 +158,8 @@ struct mhi_ep_cntrl { void __iomem *virt, size_t size); int (*read_sync)(struct mhi_ep_cntrl *mhi_cntrl, struct mhi_ep_buf_info *buf_info); int (*write_sync)(struct mhi_ep_cntrl *mhi_cntrl, struct mhi_ep_buf_info *buf_info); + int (*read_async)(struct mhi_ep_cntrl *mhi_cntrl, struct mhi_ep_buf_info *buf_info); + int (*write_async)(struct mhi_ep_cntrl *mhi_cntrl, struct mhi_ep_buf_info *buf_info); enum mhi_state mhi_state; |