diff options
Diffstat (limited to 'include/linux/mhi_ep.h')
| -rw-r--r-- | include/linux/mhi_ep.h | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h index 478aece17046..7b40fc8cbe77 100644 --- a/include/linux/mhi_ep.h +++ b/include/linux/mhi_ep.h @@ -50,6 +50,27 @@ struct mhi_ep_db_info { }; /** + * struct mhi_ep_buf_info - MHI Endpoint transfer buffer info + * @mhi_dev: MHI device associated with this buffer + * @dev_addr: Address of the buffer in endpoint + * @host_addr: Address of the bufffer in host + * @size: Size of the buffer + * @code: Transfer completion code + * @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 { + struct mhi_ep_device *mhi_dev; + void *dev_addr; + u64 host_addr; + size_t size; + int code; + + void (*cb)(struct mhi_ep_buf_info *buf_info); + void *cb_buf; +}; + +/** * struct mhi_ep_cntrl - MHI Endpoint controller structure * @cntrl_dev: Pointer to the struct device of physical bus acting as the MHI * Endpoint controller @@ -70,8 +91,8 @@ struct mhi_ep_db_info { * @cmd_ctx_cache_phys: Physical address of the host command context cache * @chdb: Array of channel doorbell interrupt info * @event_lock: Lock for protecting event rings - * @list_lock: Lock for protecting state transition and channel doorbell lists * @state_lock: Lock for protecting state transitions + * @list_lock: Lock for protecting state transition and channel doorbell lists * @st_transition_list: List of state transitions * @ch_db_list: List of queued channel doorbells * @wq: Dedicated workqueue for handling rings and state changes @@ -82,8 +103,10 @@ struct mhi_ep_db_info { * @raise_irq: CB function for raising IRQ to the host * @alloc_map: CB function for allocating memory in endpoint for storing host context and mapping it * @unmap_free: CB function to unmap and free the allocated memory in endpoint for storing host context - * @read_from_host: CB function for reading from host memory from endpoint - * @write_to_host: CB function for writing to host memory from endpoint + * @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 @@ -117,8 +140,8 @@ struct mhi_ep_cntrl { struct mhi_ep_db_info chdb[4]; struct mutex event_lock; + struct mutex state_lock; spinlock_t list_lock; - spinlock_t state_lock; struct list_head st_transition_list; struct list_head ch_db_list; @@ -128,14 +151,19 @@ struct mhi_ep_cntrl { struct work_struct reset_work; struct work_struct cmd_ring_work; struct work_struct ch_ring_work; + struct kmem_cache *ring_item_cache; + struct kmem_cache *ev_ring_el_cache; + struct kmem_cache *tre_buf_cache; void (*raise_irq)(struct mhi_ep_cntrl *mhi_cntrl, u32 vector); int (*alloc_map)(struct mhi_ep_cntrl *mhi_cntrl, u64 pci_addr, phys_addr_t *phys_ptr, void __iomem **virt, size_t size); void (*unmap_free)(struct mhi_ep_cntrl *mhi_cntrl, u64 pci_addr, phys_addr_t phys, void __iomem *virt, size_t size); - int (*read_from_host)(struct mhi_ep_cntrl *mhi_cntrl, u64 from, void *to, size_t size); - int (*write_to_host)(struct mhi_ep_cntrl *mhi_cntrl, void *from, u64 to, 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; @@ -193,7 +221,7 @@ struct mhi_ep_driver { }; #define to_mhi_ep_device(dev) container_of(dev, struct mhi_ep_device, dev) -#define to_mhi_ep_driver(drv) container_of(drv, struct mhi_ep_driver, driver) +#define to_mhi_ep_driver(drv) container_of_const(drv, struct mhi_ep_driver, driver) /* * module_mhi_ep_driver() - Helper macro for drivers that don't do |