1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * RapidIO interconnect services |
4 | * (RapidIO Interconnect Specification, http://www.rapidio.org) |
5 | * |
6 | * Copyright 2005 MontaVista Software, Inc. |
7 | * Matt Porter <mporter@kernel.crashing.org> |
8 | */ |
9 | |
10 | #ifndef LINUX_RIO_H |
11 | #define LINUX_RIO_H |
12 | |
13 | #include <linux/types.h> |
14 | #include <linux/ioport.h> |
15 | #include <linux/list.h> |
16 | #include <linux/errno.h> |
17 | #include <linux/device.h> |
18 | #include <linux/rio_regs.h> |
19 | #include <linux/mod_devicetable.h> |
20 | #ifdef CONFIG_RAPIDIO_DMA_ENGINE |
21 | #include <linux/dmaengine.h> |
22 | #endif |
23 | |
24 | #define RIO_NO_HOPCOUNT -1 |
25 | #define RIO_INVALID_DESTID 0xffff |
26 | |
27 | #define RIO_MAX_MPORTS 8 |
28 | #define RIO_MAX_MPORT_RESOURCES 16 |
29 | #define RIO_MAX_DEV_RESOURCES 16 |
30 | #define RIO_MAX_MPORT_NAME 40 |
31 | |
32 | #define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's |
33 | global routing table if it |
34 | has multiple (or per port) |
35 | tables */ |
36 | |
37 | #define RIO_INVALID_ROUTE 0xff /* Indicates that a route table |
38 | entry is invalid (no route |
39 | exists for the device ID) */ |
40 | |
41 | #define RIO_MAX_ROUTE_ENTRIES(size) (size ? (1 << 16) : (1 << 8)) |
42 | #define RIO_ANY_DESTID(size) (size ? 0xffff : 0xff) |
43 | |
44 | #define RIO_MAX_MBOX 4 |
45 | #define RIO_MAX_MSG_SIZE 0x1000 |
46 | |
47 | /* |
48 | * Error values that may be returned by RIO functions. |
49 | */ |
50 | #define RIO_SUCCESSFUL 0x00 |
51 | #define RIO_BAD_SIZE 0x81 |
52 | |
53 | /* |
54 | * For RIO devices, the region numbers are assigned this way: |
55 | * |
56 | * 0 RapidIO outbound doorbells |
57 | * 1-15 RapidIO memory regions |
58 | * |
59 | * For RIO master ports, the region number are assigned this way: |
60 | * |
61 | * 0 RapidIO inbound doorbells |
62 | * 1 RapidIO inbound mailboxes |
63 | * 2 RapidIO outbound mailboxes |
64 | */ |
65 | #define RIO_DOORBELL_RESOURCE 0 |
66 | #define RIO_INB_MBOX_RESOURCE 1 |
67 | #define RIO_OUTB_MBOX_RESOURCE 2 |
68 | |
69 | #define RIO_PW_MSG_SIZE 64 |
70 | |
71 | /* |
72 | * A component tag value (stored in the component tag CSR) is used as device's |
73 | * unique identifier assigned during enumeration. Besides being used for |
74 | * identifying switches (which do not have device ID register), it also is used |
75 | * by error management notification and therefore has to be assigned |
76 | * to endpoints as well. |
77 | */ |
78 | #define RIO_CTAG_RESRVD 0xfffe0000 /* Reserved */ |
79 | #define RIO_CTAG_UDEVID 0x0001ffff /* Unique device identifier */ |
80 | |
81 | extern struct bus_type rio_bus_type; |
82 | extern struct class rio_mport_class; |
83 | |
84 | struct rio_mport; |
85 | struct rio_dev; |
86 | union rio_pw_msg; |
87 | |
88 | /** |
89 | * struct rio_switch - RIO switch info |
90 | * @node: Node in global list of switches |
91 | * @route_table: Copy of switch routing table |
92 | * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0 |
93 | * @ops: pointer to switch-specific operations |
94 | * @lock: lock to serialize operations updates |
95 | * @nextdev: Array of per-port pointers to the next attached device |
96 | */ |
97 | struct rio_switch { |
98 | struct list_head node; |
99 | u8 *route_table; |
100 | u32 port_ok; |
101 | struct rio_switch_ops *ops; |
102 | spinlock_t lock; |
103 | struct rio_dev *nextdev[]; |
104 | }; |
105 | |
106 | /** |
107 | * struct rio_switch_ops - Per-switch operations |
108 | * @owner: The module owner of this structure |
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 |
116 | * |
117 | * Defines the operations that are necessary to initialize/control |
118 | * a particular RIO switch device. |
119 | */ |
120 | struct rio_switch_ops { |
121 | struct module *owner; |
122 | int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount, |
123 | u16 table, u16 route_destid, u8 route_port); |
124 | int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount, |
125 | u16 table, u16 route_destid, u8 *route_port); |
126 | int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount, |
127 | u16 table); |
128 | int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, |
129 | u8 sw_domain); |
130 | int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount, |
131 | u8 *sw_domain); |
132 | int (*em_init) (struct rio_dev *dev); |
133 | int (*em_handle) (struct rio_dev *dev, u8 swport); |
134 | }; |
135 | |
136 | enum rio_device_state { |
137 | RIO_DEVICE_INITIALIZING, |
138 | RIO_DEVICE_RUNNING, |
139 | RIO_DEVICE_GONE, |
140 | RIO_DEVICE_SHUTDOWN, |
141 | }; |
142 | |
143 | /** |
144 | * struct rio_dev - RIO device info |
145 | * @global_list: Node in list of all RIO devices |
146 | * @net_list: Node in list of RIO devices in a network |
147 | * @net: Network this device is a part of |
148 | * @do_enum: Enumeration flag |
149 | * @did: Device ID |
150 | * @vid: Vendor ID |
151 | * @device_rev: Device revision |
152 | * @asm_did: Assembly device ID |
153 | * @asm_vid: Assembly vendor ID |
154 | * @asm_rev: Assembly revision |
155 | * @efptr: Extended feature pointer |
156 | * @pef: Processing element features |
157 | * @swpinfo: Switch port info |
158 | * @src_ops: Source operation capabilities |
159 | * @dst_ops: Destination operation capabilities |
160 | * @comp_tag: RIO component tag |
161 | * @phys_efptr: RIO device extended features pointer |
162 | * @phys_rmap: LP-Serial Register Map Type (1 or 2) |
163 | * @em_efptr: RIO Error Management features pointer |
164 | * @dma_mask: Mask of bits of RIO address this device implements |
165 | * @driver: Driver claiming this device |
166 | * @dev: Device model device |
167 | * @riores: RIO resources this device owns |
168 | * @pwcback: port-write callback function for this device |
169 | * @destid: Network destination ID (or associated destid for switch) |
170 | * @hopcount: Hopcount to this device |
171 | * @prev: Previous RIO device connected to the current one |
172 | * @state: device state |
173 | * @rswitch: struct rio_switch (if valid for this device) |
174 | */ |
175 | struct rio_dev { |
176 | struct list_head global_list; /* node in list of all RIO devices */ |
177 | struct list_head net_list; /* node in per net list */ |
178 | struct rio_net *net; /* RIO net this device resides in */ |
179 | bool do_enum; |
180 | u16 did; |
181 | u16 vid; |
182 | u32 device_rev; |
183 | u16 asm_did; |
184 | u16 asm_vid; |
185 | u16 asm_rev; |
186 | u16 efptr; |
187 | u32 pef; |
188 | u32 swpinfo; |
189 | u32 src_ops; |
190 | u32 dst_ops; |
191 | u32 comp_tag; |
192 | u32 phys_efptr; |
193 | u32 phys_rmap; |
194 | u32 em_efptr; |
195 | u64 dma_mask; |
196 | struct rio_driver *driver; /* RIO driver claiming this device */ |
197 | struct device dev; /* LDM device structure */ |
198 | struct resource riores[RIO_MAX_DEV_RESOURCES]; |
199 | int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step); |
200 | u16 destid; |
201 | u8 hopcount; |
202 | struct rio_dev *prev; |
203 | atomic_t state; |
204 | struct rio_switch rswitch[]; /* RIO switch info */ |
205 | }; |
206 | |
207 | #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list) |
208 | #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list) |
209 | #define to_rio_dev(n) container_of(n, struct rio_dev, dev) |
210 | #define sw_to_rio_dev(n) container_of(n, struct rio_dev, rswitch[0]) |
211 | #define to_rio_mport(n) container_of(n, struct rio_mport, dev) |
212 | #define to_rio_net(n) container_of(n, struct rio_net, dev) |
213 | |
214 | /** |
215 | * struct rio_msg - RIO message event |
216 | * @res: Mailbox resource |
217 | * @mcback: Message event callback |
218 | */ |
219 | struct rio_msg { |
220 | struct resource *res; |
221 | void (*mcback) (struct rio_mport * mport, void *dev_id, int mbox, int slot); |
222 | }; |
223 | |
224 | /** |
225 | * struct rio_dbell - RIO doorbell event |
226 | * @node: Node in list of doorbell events |
227 | * @res: Doorbell resource |
228 | * @dinb: Doorbell event callback |
229 | * @dev_id: Device specific pointer to pass on event |
230 | */ |
231 | struct rio_dbell { |
232 | struct list_head node; |
233 | struct resource *res; |
234 | void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src, u16 dst, u16 info); |
235 | void *dev_id; |
236 | }; |
237 | |
238 | /** |
239 | * struct rio_mport - RIO master port info |
240 | * @dbells: List of doorbell events |
241 | * @pwrites: List of portwrite events |
242 | * @node: Node in global list of master ports |
243 | * @nnode: Node in network list of master ports |
244 | * @net: RIO net this mport is attached to |
245 | * @lock: lock to synchronize lists manipulations |
246 | * @iores: I/O mem resource that this master port interface owns |
247 | * @riores: RIO resources that this master port interfaces owns |
248 | * @inb_msg: RIO inbound message event descriptors |
249 | * @outb_msg: RIO outbound message event descriptors |
250 | * @host_deviceid: Host device ID associated with this master port |
251 | * @ops: configuration space functions |
252 | * @id: Port ID, unique among all ports |
253 | * @index: Port index, unique among all port interfaces of the same type |
254 | * @sys_size: RapidIO common transport system size |
255 | * @phys_efptr: RIO port extended features pointer |
256 | * @phys_rmap: LP-Serial EFB Register Mapping type (1 or 2). |
257 | * @name: Port name string |
258 | * @dev: device structure associated with an mport |
259 | * @priv: Master port private data |
260 | * @dma: DMA device associated with mport |
261 | * @nscan: RapidIO network enumeration/discovery operations |
262 | * @state: mport device state |
263 | * @pwe_refcnt: port-write enable ref counter to track enable/disable requests |
264 | */ |
265 | struct rio_mport { |
266 | struct list_head dbells; /* list of doorbell events */ |
267 | struct list_head pwrites; /* list of portwrite events */ |
268 | struct list_head node; /* node in global list of ports */ |
269 | struct list_head nnode; /* node in net list of ports */ |
270 | struct rio_net *net; /* RIO net this mport is attached to */ |
271 | struct mutex lock; |
272 | struct resource iores; |
273 | struct resource riores[RIO_MAX_MPORT_RESOURCES]; |
274 | struct rio_msg inb_msg[RIO_MAX_MBOX]; |
275 | struct rio_msg outb_msg[RIO_MAX_MBOX]; |
276 | int host_deviceid; /* Host device ID */ |
277 | struct rio_ops *ops; /* low-level architecture-dependent routines */ |
278 | unsigned char id; /* port ID, unique among all ports */ |
279 | unsigned char index; /* port index, unique among all port |
280 | interfaces of the same type */ |
281 | unsigned int sys_size; /* RapidIO common transport system size. |
282 | * 0 - Small size. 256 devices. |
283 | * 1 - Large size, 65536 devices. |
284 | */ |
285 | u32 phys_efptr; |
286 | u32 phys_rmap; |
287 | unsigned char name[RIO_MAX_MPORT_NAME]; |
288 | struct device dev; |
289 | void *priv; /* Master port private data */ |
290 | #ifdef CONFIG_RAPIDIO_DMA_ENGINE |
291 | struct dma_device dma; |
292 | #endif |
293 | struct rio_scan *nscan; |
294 | atomic_t state; |
295 | unsigned int pwe_refcnt; |
296 | }; |
297 | |
298 | static inline int rio_mport_is_running(struct rio_mport *mport) |
299 | { |
300 | return atomic_read(v: &mport->state) == RIO_DEVICE_RUNNING; |
301 | } |
302 | |
303 | /* |
304 | * Enumeration/discovery control flags |
305 | */ |
306 | #define RIO_SCAN_ENUM_NO_WAIT 0x00000001 /* Do not wait for enum completed */ |
307 | |
308 | /** |
309 | * struct rio_net - RIO network info |
310 | * @node: Node in global list of RIO networks |
311 | * @devices: List of devices in this network |
312 | * @switches: List of switches in this network |
313 | * @mports: List of master ports accessing this network |
314 | * @hport: Default port for accessing this network |
315 | * @id: RIO network ID |
316 | * @dev: Device object |
317 | * @enum_data: private data specific to a network enumerator |
318 | * @release: enumerator-specific release callback |
319 | */ |
320 | struct rio_net { |
321 | struct list_head node; /* node in list of networks */ |
322 | struct list_head devices; /* list of devices in this net */ |
323 | struct list_head switches; /* list of switches in this net */ |
324 | struct list_head mports; /* list of ports accessing net */ |
325 | struct rio_mport *hport; /* primary port for accessing net */ |
326 | unsigned char id; /* RIO network ID */ |
327 | struct device dev; |
328 | void *enum_data; /* private data for enumerator of the network */ |
329 | void (*release)(struct rio_net *net); |
330 | }; |
331 | |
332 | enum rio_link_speed { |
333 | RIO_LINK_DOWN = 0, /* SRIO Link not initialized */ |
334 | RIO_LINK_125 = 1, /* 1.25 GBaud */ |
335 | RIO_LINK_250 = 2, /* 2.5 GBaud */ |
336 | RIO_LINK_312 = 3, /* 3.125 GBaud */ |
337 | RIO_LINK_500 = 4, /* 5.0 GBaud */ |
338 | RIO_LINK_625 = 5 /* 6.25 GBaud */ |
339 | }; |
340 | |
341 | enum rio_link_width { |
342 | RIO_LINK_1X = 0, |
343 | RIO_LINK_1XR = 1, |
344 | RIO_LINK_2X = 3, |
345 | RIO_LINK_4X = 2, |
346 | RIO_LINK_8X = 4, |
347 | RIO_LINK_16X = 5 |
348 | }; |
349 | |
350 | enum rio_mport_flags { |
351 | RIO_MPORT_DMA = (1 << 0), /* supports DMA data transfers */ |
352 | RIO_MPORT_DMA_SG = (1 << 1), /* DMA supports HW SG mode */ |
353 | RIO_MPORT_IBSG = (1 << 2), /* inbound mapping supports SG */ |
354 | }; |
355 | |
356 | /** |
357 | * struct rio_mport_attr - RIO mport device attributes |
358 | * @flags: mport device capability flags |
359 | * @link_speed: SRIO link speed value (as defined by RapidIO specification) |
360 | * @link_width: SRIO link width value (as defined by RapidIO specification) |
361 | * @dma_max_sge: number of SG list entries that can be handled by DMA channel(s) |
362 | * @dma_max_size: max number of bytes in single DMA transfer (SG entry) |
363 | * @dma_align: alignment shift for DMA operations (as for other DMA operations) |
364 | */ |
365 | struct rio_mport_attr { |
366 | int flags; |
367 | int link_speed; |
368 | int link_width; |
369 | |
370 | /* DMA capability info: valid only if RIO_MPORT_DMA flag is set */ |
371 | int dma_max_sge; |
372 | int dma_max_size; |
373 | int dma_align; |
374 | }; |
375 | |
376 | /* Low-level architecture-dependent routines */ |
377 | |
378 | /** |
379 | * struct rio_ops - Low-level RIO configuration space operations |
380 | * @lcread: Callback to perform local (master port) read of config space. |
381 | * @lcwrite: Callback to perform local (master port) write of config space. |
382 | * @cread: Callback to perform network read of config space. |
383 | * @cwrite: Callback to perform network write of config space. |
384 | * @dsend: Callback to send a doorbell message. |
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. |
388 | * @open_inb_mbox: Callback to initialize inbound mailbox. |
389 | * @close_inb_mbox: Callback to shut down inbound mailbox. |
390 | * @add_outb_message: Callback to add a message to an outbound mailbox queue. |
391 | * @add_inb_buffer: Callback to add a buffer to an inbound mailbox queue. |
392 | * @get_inb_message: Callback to get a message from an inbound mailbox queue. |
393 | * @map_inb: Callback to map RapidIO address region into local memory space. |
394 | * @unmap_inb: Callback to unmap RapidIO address region mapped with map_inb(). |
395 | * @query_mport: Callback to query mport device attributes. |
396 | * @map_outb: Callback to map outbound address region into local memory space. |
397 | * @unmap_outb: Callback to unmap outbound RapidIO address region. |
398 | */ |
399 | struct rio_ops { |
400 | int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len, |
401 | u32 *data); |
402 | int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len, |
403 | u32 data); |
404 | int (*cread) (struct rio_mport *mport, int index, u16 destid, |
405 | u8 hopcount, u32 offset, int len, u32 *data); |
406 | int (*cwrite) (struct rio_mport *mport, int index, u16 destid, |
407 | u8 hopcount, u32 offset, int len, u32 data); |
408 | int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data); |
409 | int (*pwenable) (struct rio_mport *mport, int enable); |
410 | int (*open_outb_mbox)(struct rio_mport *mport, void *dev_id, |
411 | int mbox, int entries); |
412 | void (*close_outb_mbox)(struct rio_mport *mport, int mbox); |
413 | int (*open_inb_mbox)(struct rio_mport *mport, void *dev_id, |
414 | int mbox, int entries); |
415 | void (*close_inb_mbox)(struct rio_mport *mport, int mbox); |
416 | int (*add_outb_message)(struct rio_mport *mport, struct rio_dev *rdev, |
417 | int mbox, void *buffer, size_t len); |
418 | int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf); |
419 | void *(*get_inb_message)(struct rio_mport *mport, int mbox); |
420 | int (*map_inb)(struct rio_mport *mport, dma_addr_t lstart, |
421 | u64 rstart, u64 size, u32 flags); |
422 | void (*unmap_inb)(struct rio_mport *mport, dma_addr_t lstart); |
423 | int (*query_mport)(struct rio_mport *mport, |
424 | struct rio_mport_attr *attr); |
425 | int (*map_outb)(struct rio_mport *mport, u16 destid, u64 rstart, |
426 | u32 size, u32 flags, dma_addr_t *laddr); |
427 | void (*unmap_outb)(struct rio_mport *mport, u16 destid, u64 rstart); |
428 | }; |
429 | |
430 | #define RIO_RESOURCE_MEM 0x00000100 |
431 | #define RIO_RESOURCE_DOORBELL 0x00000200 |
432 | #define RIO_RESOURCE_MAILBOX 0x00000400 |
433 | |
434 | #define RIO_RESOURCE_CACHEABLE 0x00010000 |
435 | #define RIO_RESOURCE_PCI 0x00020000 |
436 | |
437 | #define RIO_RESOURCE_BUSY 0x80000000 |
438 | |
439 | /** |
440 | * struct rio_driver - RIO driver info |
441 | * @node: Node in list of drivers |
442 | * @name: RIO driver name |
443 | * @id_table: RIO device ids to be associated with this driver |
444 | * @probe: RIO device inserted |
445 | * @remove: RIO device removed |
446 | * @shutdown: shutdown notification callback |
447 | * @suspend: RIO device suspended |
448 | * @resume: RIO device awakened |
449 | * @enable_wake: RIO device enable wake event |
450 | * @driver: LDM driver struct |
451 | * |
452 | * Provides info on a RIO device driver for insertion/removal and |
453 | * power management purposes. |
454 | */ |
455 | struct rio_driver { |
456 | struct list_head node; |
457 | char *name; |
458 | const struct rio_device_id *id_table; |
459 | int (*probe) (struct rio_dev * dev, const struct rio_device_id * id); |
460 | void (*remove) (struct rio_dev * dev); |
461 | void (*shutdown)(struct rio_dev *dev); |
462 | int (*suspend) (struct rio_dev * dev, u32 state); |
463 | int (*resume) (struct rio_dev * dev); |
464 | int (*enable_wake) (struct rio_dev * dev, u32 state, int enable); |
465 | struct device_driver driver; |
466 | }; |
467 | |
468 | #define to_rio_driver(drv) container_of(drv,struct rio_driver, driver) |
469 | |
470 | union rio_pw_msg { |
471 | struct { |
472 | u32 comptag; /* Component Tag CSR */ |
473 | u32 errdetect; /* Port N Error Detect CSR */ |
474 | u32 is_port; /* Implementation specific + PortID */ |
475 | u32 ltlerrdet; /* LTL Error Detect CSR */ |
476 | u32 padding[12]; |
477 | } em; |
478 | u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)]; |
479 | }; |
480 | |
481 | #ifdef CONFIG_RAPIDIO_DMA_ENGINE |
482 | |
483 | /* |
484 | * enum rio_write_type - RIO write transaction types used in DMA transfers |
485 | * |
486 | * Note: RapidIO specification defines write (NWRITE) and |
487 | * write-with-response (NWRITE_R) data transfer operations. |
488 | * Existing DMA controllers that service RapidIO may use one of these operations |
489 | * for entire data transfer or their combination with only the last data packet |
490 | * requires response. |
491 | */ |
492 | enum rio_write_type { |
493 | RDW_DEFAULT, /* default method used by DMA driver */ |
494 | RDW_ALL_NWRITE, /* all packets use NWRITE */ |
495 | RDW_ALL_NWRITE_R, /* all packets use NWRITE_R */ |
496 | RDW_LAST_NWRITE_R, /* last packet uses NWRITE_R, others - NWRITE */ |
497 | }; |
498 | |
499 | struct rio_dma_ext { |
500 | u16 destid; |
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 */ |
503 | enum rio_write_type wr_type; /* preferred RIO write operation type */ |
504 | }; |
505 | |
506 | struct rio_dma_data { |
507 | /* Local data (as scatterlist) */ |
508 | struct scatterlist *sg; /* I/O scatter list */ |
509 | unsigned int sg_len; /* size of scatter list */ |
510 | /* Remote device address (flat buffer) */ |
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 */ |
513 | enum rio_write_type wr_type; /* preferred RIO write operation type */ |
514 | }; |
515 | |
516 | static inline struct rio_mport *dma_to_mport(struct dma_device *ddev) |
517 | { |
518 | return container_of(ddev, struct rio_mport, dma); |
519 | } |
520 | #endif /* CONFIG_RAPIDIO_DMA_ENGINE */ |
521 | |
522 | /** |
523 | * struct rio_scan - RIO enumeration and discovery operations |
524 | * @owner: The module owner of this structure |
525 | * @enumerate: Callback to perform RapidIO fabric enumeration. |
526 | * @discover: Callback to perform RapidIO fabric discovery. |
527 | */ |
528 | struct rio_scan { |
529 | struct module *owner; |
530 | int (*enumerate)(struct rio_mport *mport, u32 flags); |
531 | int (*discover)(struct rio_mport *mport, u32 flags); |
532 | }; |
533 | |
534 | /** |
535 | * struct rio_scan_node - list node to register RapidIO enumeration and |
536 | * discovery methods with RapidIO core. |
537 | * @mport_id: ID of an mport (net) serviced by this enumerator |
538 | * @node: node in global list of registered enumerators |
539 | * @ops: RIO enumeration and discovery operations |
540 | */ |
541 | struct rio_scan_node { |
542 | int mport_id; |
543 | struct list_head node; |
544 | struct rio_scan *ops; |
545 | }; |
546 | |
547 | /* Architecture and hardware-specific functions */ |
548 | extern int rio_mport_initialize(struct rio_mport *); |
549 | extern int rio_register_mport(struct rio_mport *); |
550 | extern int rio_unregister_mport(struct rio_mport *); |
551 | extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); |
552 | extern void rio_close_inb_mbox(struct rio_mport *, int); |
553 | extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int); |
554 | extern void rio_close_outb_mbox(struct rio_mport *, int); |
555 | extern int rio_query_mport(struct rio_mport *port, |
556 | struct rio_mport_attr *mport_attr); |
557 | |
558 | #endif /* LINUX_RIO_H */ |
559 | |