include/linux/rio.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
24 #define RIO_NO_HOPCOUNT		-1
56  *	0	RapidIO outbound doorbells
57  *      1-15	RapidIO memory regions
63  *	2	RapidIO outbound mailboxes
89  * struct rio_switch - RIO switch info
92  * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
93  * @ops: pointer to switch-specific operations
95  * @nextdev: Array of per-port pointers to the next attached device
107  * struct rio_switch_ops - Per-switch operations
109  * @add_entry: Callback for switch-specific route add function
110  * @get_entry: Callback for switch-specific route get function
111  * @clr_table: Callback for switch-specific clear route table function
112  * @set_domain: Callback for switch-specific domain setting function
113  * @get_domain: Callback for switch-specific domain get function
114  * @em_init: Callback for switch-specific error management init function
115  * @em_handle: Callback for switch-specific error management handler function
144  * struct rio_dev - RIO device info
162  * @phys_rmap: LP-Serial Register Map Type (1 or 2)
168  * @pwcback: port-write callback function for this device
215  * struct rio_msg - RIO message event
225  * struct rio_dbell - RIO doorbell event
239  * struct rio_mport - RIO master port info
249  * @outb_msg: RIO outbound message event descriptors
256  * @phys_rmap: LP-Serial EFB Register Mapping type (1 or 2).
263  * @pwe_refcnt: port-write enable ref counter to track enable/disable requests
277 	struct rio_ops *ops;	/* low-level architecture-dependent routines */
282 				 * 0 - Small size. 256 devices.
283 				 * 1 - Large size, 65536 devices.
300 	return atomic_read(&mport->state) == RIO_DEVICE_RUNNING;  in rio_mport_is_running()
309  * struct rio_net - RIO network info
318  * @release: enumerator-specific release callback
357  * struct rio_mport_attr - RIO mport device attributes
362  * @dma_max_size: max number of bytes in single DMA transfer (SG entry)
376 /* Low-level architecture-dependent routines */
379  * struct rio_ops - Low-level RIO configuration space operations
385  * @pwenable: Callback to enable/disable port-write message handling.
386  * @open_outb_mbox: Callback to initialize outbound mailbox.
387  * @close_outb_mbox: Callback to shut down outbound mailbox.
390  * @add_outb_message: Callback to add a message to an outbound mailbox queue.
396  * @map_outb: Callback to map outbound address region into local memory space.
397  * @unmap_outb: Callback to unmap outbound RapidIO address region.
440  * struct rio_driver - RIO driver info
484  * enum rio_write_type - RIO write transaction types used in DMA transfers
487  * write-with-response (NWRITE_R) data transfer operations.
496 	RDW_LAST_NWRITE_R,	/* last packet uses NWRITE_R, others - NWRITE */
501 	u64 rio_addr;	/* low 64-bits of 66-bit RapidIO address */
502 	u8  rio_addr_u;  /* upper 2-bits of 66-bit RapidIO address */
511 	u64 rio_addr;	/* low 64-bits of 66-bit RapidIO address */
512 	u8  rio_addr_u;  /* upper 2-bits of 66-bit RapidIO address */
523  * struct rio_scan - RIO enumeration and discovery operations
535  * struct rio_scan_node - list node to register RapidIO enumeration and
547 /* Architecture and hardware-specific functions */