Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 1 | /* |
| 2 | * RapidIO interconnect services |
| 3 | * (RapidIO Interconnect Specification, http://www.rapidio.org) |
| 4 | * |
| 5 | * Copyright 2005 MontaVista Software, Inc. |
| 6 | * Matt Porter <mporter@kernel.crashing.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 14 | #include <linux/types.h> |
| 15 | #include <linux/kernel.h> |
| 16 | |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/rio.h> |
| 20 | #include <linux/rio_drv.h> |
| 21 | #include <linux/rio_ids.h> |
| 22 | #include <linux/rio_regs.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/spinlock.h> |
Tim Schmielau | de25968 | 2006-01-08 01:02:05 -0800 | [diff] [blame] | 25 | #include <linux/slab.h> |
Kumar Gala | 5febf1c | 2008-01-23 05:53:47 -0600 | [diff] [blame] | 26 | #include <linux/interrupt.h> |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 27 | |
| 28 | #include "rio.h" |
| 29 | |
| 30 | static LIST_HEAD(rio_mports); |
| 31 | |
| 32 | /** |
| 33 | * rio_local_get_device_id - Get the base/extended device id for a port |
| 34 | * @port: RIO master port from which to get the deviceid |
| 35 | * |
| 36 | * Reads the base/extended device id from the local device |
| 37 | * implementing the master port. Returns the 8/16-bit device |
| 38 | * id. |
| 39 | */ |
| 40 | u16 rio_local_get_device_id(struct rio_mport *port) |
| 41 | { |
| 42 | u32 result; |
| 43 | |
| 44 | rio_local_read_config_32(port, RIO_DID_CSR, &result); |
| 45 | |
Zhang Wei | e042323 | 2008-04-18 13:33:42 -0700 | [diff] [blame] | 46 | return (RIO_GET_DID(port->sys_size, result)); |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | /** |
| 50 | * rio_request_inb_mbox - request inbound mailbox service |
| 51 | * @mport: RIO master port from which to allocate the mailbox resource |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 52 | * @dev_id: Device specific pointer to pass on event |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 53 | * @mbox: Mailbox number to claim |
| 54 | * @entries: Number of entries in inbound mailbox queue |
| 55 | * @minb: Callback to execute when inbound message is received |
| 56 | * |
| 57 | * Requests ownership of an inbound mailbox resource and binds |
| 58 | * a callback function to the resource. Returns %0 on success. |
| 59 | */ |
| 60 | int rio_request_inb_mbox(struct rio_mport *mport, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 61 | void *dev_id, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 62 | int mbox, |
| 63 | int entries, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 64 | void (*minb) (struct rio_mport * mport, void *dev_id, int mbox, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 65 | int slot)) |
| 66 | { |
| 67 | int rc = 0; |
| 68 | |
| 69 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); |
| 70 | |
| 71 | if (res) { |
| 72 | rio_init_mbox_res(res, mbox, mbox); |
| 73 | |
| 74 | /* Make sure this mailbox isn't in use */ |
| 75 | if ((rc = |
| 76 | request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE], |
| 77 | res)) < 0) { |
| 78 | kfree(res); |
| 79 | goto out; |
| 80 | } |
| 81 | |
| 82 | mport->inb_msg[mbox].res = res; |
| 83 | |
| 84 | /* Hook the inbound message callback */ |
| 85 | mport->inb_msg[mbox].mcback = minb; |
| 86 | |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 87 | rc = rio_open_inb_mbox(mport, dev_id, mbox, entries); |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 88 | } else |
| 89 | rc = -ENOMEM; |
| 90 | |
| 91 | out: |
| 92 | return rc; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * rio_release_inb_mbox - release inbound mailbox message service |
| 97 | * @mport: RIO master port from which to release the mailbox resource |
| 98 | * @mbox: Mailbox number to release |
| 99 | * |
| 100 | * Releases ownership of an inbound mailbox resource. Returns 0 |
| 101 | * if the request has been satisfied. |
| 102 | */ |
| 103 | int rio_release_inb_mbox(struct rio_mport *mport, int mbox) |
| 104 | { |
| 105 | rio_close_inb_mbox(mport, mbox); |
| 106 | |
| 107 | /* Release the mailbox resource */ |
| 108 | return release_resource(mport->inb_msg[mbox].res); |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * rio_request_outb_mbox - request outbound mailbox service |
| 113 | * @mport: RIO master port from which to allocate the mailbox resource |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 114 | * @dev_id: Device specific pointer to pass on event |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 115 | * @mbox: Mailbox number to claim |
| 116 | * @entries: Number of entries in outbound mailbox queue |
| 117 | * @moutb: Callback to execute when outbound message is sent |
| 118 | * |
| 119 | * Requests ownership of an outbound mailbox resource and binds |
| 120 | * a callback function to the resource. Returns 0 on success. |
| 121 | */ |
| 122 | int rio_request_outb_mbox(struct rio_mport *mport, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 123 | void *dev_id, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 124 | int mbox, |
| 125 | int entries, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 126 | void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot)) |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 127 | { |
| 128 | int rc = 0; |
| 129 | |
| 130 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); |
| 131 | |
| 132 | if (res) { |
| 133 | rio_init_mbox_res(res, mbox, mbox); |
| 134 | |
| 135 | /* Make sure this outbound mailbox isn't in use */ |
| 136 | if ((rc = |
| 137 | request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE], |
| 138 | res)) < 0) { |
| 139 | kfree(res); |
| 140 | goto out; |
| 141 | } |
| 142 | |
| 143 | mport->outb_msg[mbox].res = res; |
| 144 | |
| 145 | /* Hook the inbound message callback */ |
| 146 | mport->outb_msg[mbox].mcback = moutb; |
| 147 | |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 148 | rc = rio_open_outb_mbox(mport, dev_id, mbox, entries); |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 149 | } else |
| 150 | rc = -ENOMEM; |
| 151 | |
| 152 | out: |
| 153 | return rc; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * rio_release_outb_mbox - release outbound mailbox message service |
| 158 | * @mport: RIO master port from which to release the mailbox resource |
| 159 | * @mbox: Mailbox number to release |
| 160 | * |
| 161 | * Releases ownership of an inbound mailbox resource. Returns 0 |
| 162 | * if the request has been satisfied. |
| 163 | */ |
| 164 | int rio_release_outb_mbox(struct rio_mport *mport, int mbox) |
| 165 | { |
| 166 | rio_close_outb_mbox(mport, mbox); |
| 167 | |
| 168 | /* Release the mailbox resource */ |
| 169 | return release_resource(mport->outb_msg[mbox].res); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * rio_setup_inb_dbell - bind inbound doorbell callback |
| 174 | * @mport: RIO master port to bind the doorbell callback |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 175 | * @dev_id: Device specific pointer to pass on event |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 176 | * @res: Doorbell message resource |
| 177 | * @dinb: Callback to execute when doorbell is received |
| 178 | * |
| 179 | * Adds a doorbell resource/callback pair into a port's |
| 180 | * doorbell event list. Returns 0 if the request has been |
| 181 | * satisfied. |
| 182 | */ |
| 183 | static int |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 184 | rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res, |
| 185 | void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, u16 dst, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 186 | u16 info)) |
| 187 | { |
| 188 | int rc = 0; |
| 189 | struct rio_dbell *dbell; |
| 190 | |
| 191 | if (!(dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL))) { |
| 192 | rc = -ENOMEM; |
| 193 | goto out; |
| 194 | } |
| 195 | |
| 196 | dbell->res = res; |
| 197 | dbell->dinb = dinb; |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 198 | dbell->dev_id = dev_id; |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 199 | |
| 200 | list_add_tail(&dbell->node, &mport->dbells); |
| 201 | |
| 202 | out: |
| 203 | return rc; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * rio_request_inb_dbell - request inbound doorbell message service |
| 208 | * @mport: RIO master port from which to allocate the doorbell resource |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 209 | * @dev_id: Device specific pointer to pass on event |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 210 | * @start: Doorbell info range start |
| 211 | * @end: Doorbell info range end |
| 212 | * @dinb: Callback to execute when doorbell is received |
| 213 | * |
| 214 | * Requests ownership of an inbound doorbell resource and binds |
| 215 | * a callback function to the resource. Returns 0 if the request |
| 216 | * has been satisfied. |
| 217 | */ |
| 218 | int rio_request_inb_dbell(struct rio_mport *mport, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 219 | void *dev_id, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 220 | u16 start, |
| 221 | u16 end, |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 222 | void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 223 | u16 dst, u16 info)) |
| 224 | { |
| 225 | int rc = 0; |
| 226 | |
| 227 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); |
| 228 | |
| 229 | if (res) { |
| 230 | rio_init_dbell_res(res, start, end); |
| 231 | |
| 232 | /* Make sure these doorbells aren't in use */ |
| 233 | if ((rc = |
| 234 | request_resource(&mport->riores[RIO_DOORBELL_RESOURCE], |
| 235 | res)) < 0) { |
| 236 | kfree(res); |
| 237 | goto out; |
| 238 | } |
| 239 | |
| 240 | /* Hook the doorbell callback */ |
Matt Porter | 6978bbc | 2005-11-07 01:00:20 -0800 | [diff] [blame] | 241 | rc = rio_setup_inb_dbell(mport, dev_id, res, dinb); |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 242 | } else |
| 243 | rc = -ENOMEM; |
| 244 | |
| 245 | out: |
| 246 | return rc; |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * rio_release_inb_dbell - release inbound doorbell message service |
| 251 | * @mport: RIO master port from which to release the doorbell resource |
| 252 | * @start: Doorbell info range start |
| 253 | * @end: Doorbell info range end |
| 254 | * |
| 255 | * Releases ownership of an inbound doorbell resource and removes |
| 256 | * callback from the doorbell event list. Returns 0 if the request |
| 257 | * has been satisfied. |
| 258 | */ |
| 259 | int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end) |
| 260 | { |
| 261 | int rc = 0, found = 0; |
| 262 | struct rio_dbell *dbell; |
| 263 | |
| 264 | list_for_each_entry(dbell, &mport->dbells, node) { |
| 265 | if ((dbell->res->start == start) && (dbell->res->end == end)) { |
| 266 | found = 1; |
| 267 | break; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /* If we can't find an exact match, fail */ |
| 272 | if (!found) { |
| 273 | rc = -EINVAL; |
| 274 | goto out; |
| 275 | } |
| 276 | |
| 277 | /* Delete from list */ |
| 278 | list_del(&dbell->node); |
| 279 | |
| 280 | /* Release the doorbell resource */ |
| 281 | rc = release_resource(dbell->res); |
| 282 | |
| 283 | /* Free the doorbell event */ |
| 284 | kfree(dbell); |
| 285 | |
| 286 | out: |
| 287 | return rc; |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * rio_request_outb_dbell - request outbound doorbell message range |
| 292 | * @rdev: RIO device from which to allocate the doorbell resource |
| 293 | * @start: Doorbell message range start |
| 294 | * @end: Doorbell message range end |
| 295 | * |
| 296 | * Requests ownership of a doorbell message range. Returns a resource |
| 297 | * if the request has been satisfied or %NULL on failure. |
| 298 | */ |
| 299 | struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start, |
| 300 | u16 end) |
| 301 | { |
| 302 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); |
| 303 | |
| 304 | if (res) { |
| 305 | rio_init_dbell_res(res, start, end); |
| 306 | |
| 307 | /* Make sure these doorbells aren't in use */ |
| 308 | if (request_resource(&rdev->riores[RIO_DOORBELL_RESOURCE], res) |
| 309 | < 0) { |
| 310 | kfree(res); |
| 311 | res = NULL; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | return res; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * rio_release_outb_dbell - release outbound doorbell message range |
| 320 | * @rdev: RIO device from which to release the doorbell resource |
| 321 | * @res: Doorbell resource to be freed |
| 322 | * |
| 323 | * Releases ownership of a doorbell message range. Returns 0 if the |
| 324 | * request has been satisfied. |
| 325 | */ |
| 326 | int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res) |
| 327 | { |
| 328 | int rc = release_resource(res); |
| 329 | |
| 330 | kfree(res); |
| 331 | |
| 332 | return rc; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * rio_mport_get_feature - query for devices' extended features |
| 337 | * @port: Master port to issue transaction |
| 338 | * @local: Indicate a local master port or remote device access |
| 339 | * @destid: Destination ID of the device |
| 340 | * @hopcount: Number of switch hops to the device |
| 341 | * @ftr: Extended feature code |
| 342 | * |
| 343 | * Tell if a device supports a given RapidIO capability. |
| 344 | * Returns the offset of the requested extended feature |
| 345 | * block within the device's RIO configuration space or |
| 346 | * 0 in case the device does not support it. Possible |
| 347 | * values for @ftr: |
| 348 | * |
| 349 | * %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices |
| 350 | * |
| 351 | * %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices |
| 352 | * |
| 353 | * %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices |
| 354 | * |
| 355 | * %RIO_EFB_SER_EP_ID LP/Serial EP Devices |
| 356 | * |
| 357 | * %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices |
| 358 | * |
| 359 | * %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices |
| 360 | */ |
| 361 | u32 |
| 362 | rio_mport_get_feature(struct rio_mport * port, int local, u16 destid, |
| 363 | u8 hopcount, int ftr) |
| 364 | { |
| 365 | u32 asm_info, ext_ftr_ptr, ftr_header; |
| 366 | |
| 367 | if (local) |
| 368 | rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info); |
| 369 | else |
| 370 | rio_mport_read_config_32(port, destid, hopcount, |
| 371 | RIO_ASM_INFO_CAR, &asm_info); |
| 372 | |
| 373 | ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK; |
| 374 | |
| 375 | while (ext_ftr_ptr) { |
| 376 | if (local) |
| 377 | rio_local_read_config_32(port, ext_ftr_ptr, |
| 378 | &ftr_header); |
| 379 | else |
| 380 | rio_mport_read_config_32(port, destid, hopcount, |
| 381 | ext_ftr_ptr, &ftr_header); |
| 382 | if (RIO_GET_BLOCK_ID(ftr_header) == ftr) |
| 383 | return ext_ftr_ptr; |
| 384 | if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header))) |
| 385 | break; |
| 386 | } |
| 387 | |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did |
| 393 | * @vid: RIO vid to match or %RIO_ANY_ID to match all vids |
| 394 | * @did: RIO did to match or %RIO_ANY_ID to match all dids |
| 395 | * @asm_vid: RIO asm_vid to match or %RIO_ANY_ID to match all asm_vids |
| 396 | * @asm_did: RIO asm_did to match or %RIO_ANY_ID to match all asm_dids |
| 397 | * @from: Previous RIO device found in search, or %NULL for new search |
| 398 | * |
| 399 | * Iterates through the list of known RIO devices. If a RIO device is |
| 400 | * found with a matching @vid, @did, @asm_vid, @asm_did, the reference |
| 401 | * count to the device is incrememted and a pointer to its device |
| 402 | * structure is returned. Otherwise, %NULL is returned. A new search |
| 403 | * is initiated by passing %NULL to the @from argument. Otherwise, if |
| 404 | * @from is not %NULL, searches continue from next device on the global |
| 405 | * list. The reference count for @from is always decremented if it is |
| 406 | * not %NULL. |
| 407 | */ |
| 408 | struct rio_dev *rio_get_asm(u16 vid, u16 did, |
| 409 | u16 asm_vid, u16 asm_did, struct rio_dev *from) |
| 410 | { |
| 411 | struct list_head *n; |
| 412 | struct rio_dev *rdev; |
| 413 | |
| 414 | WARN_ON(in_interrupt()); |
| 415 | spin_lock(&rio_global_list_lock); |
| 416 | n = from ? from->global_list.next : rio_devices.next; |
| 417 | |
| 418 | while (n && (n != &rio_devices)) { |
| 419 | rdev = rio_dev_g(n); |
| 420 | if ((vid == RIO_ANY_ID || rdev->vid == vid) && |
| 421 | (did == RIO_ANY_ID || rdev->did == did) && |
| 422 | (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) && |
| 423 | (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did)) |
| 424 | goto exit; |
| 425 | n = n->next; |
| 426 | } |
| 427 | rdev = NULL; |
| 428 | exit: |
| 429 | rio_dev_put(from); |
| 430 | rdev = rio_dev_get(rdev); |
| 431 | spin_unlock(&rio_global_list_lock); |
| 432 | return rdev; |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * rio_get_device - Begin or continue searching for a RIO device by vid/did |
| 437 | * @vid: RIO vid to match or %RIO_ANY_ID to match all vids |
| 438 | * @did: RIO did to match or %RIO_ANY_ID to match all dids |
| 439 | * @from: Previous RIO device found in search, or %NULL for new search |
| 440 | * |
| 441 | * Iterates through the list of known RIO devices. If a RIO device is |
| 442 | * found with a matching @vid and @did, the reference count to the |
| 443 | * device is incrememted and a pointer to its device structure is returned. |
| 444 | * Otherwise, %NULL is returned. A new search is initiated by passing %NULL |
| 445 | * to the @from argument. Otherwise, if @from is not %NULL, searches |
| 446 | * continue from next device on the global list. The reference count for |
| 447 | * @from is always decremented if it is not %NULL. |
| 448 | */ |
| 449 | struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from) |
| 450 | { |
| 451 | return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from); |
| 452 | } |
| 453 | |
Alexandre Bounine | 07590ff | 2010-05-26 14:43:57 -0700 | [diff] [blame] | 454 | /** |
| 455 | * rio_std_route_add_entry - Add switch route table entry using standard |
| 456 | * registers defined in RIO specification rev.1.3 |
| 457 | * @mport: Master port to issue transaction |
| 458 | * @destid: Destination ID of the device |
| 459 | * @hopcount: Number of switch hops to the device |
| 460 | * @table: routing table ID (global or port-specific) |
| 461 | * @route_destid: destID entry in the RT |
| 462 | * @route_port: destination port for specified destID |
| 463 | */ |
| 464 | int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, |
| 465 | u16 table, u16 route_destid, u8 route_port) |
| 466 | { |
| 467 | if (table == RIO_GLOBAL_TABLE) { |
| 468 | rio_mport_write_config_32(mport, destid, hopcount, |
| 469 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, |
| 470 | (u32)route_destid); |
| 471 | rio_mport_write_config_32(mport, destid, hopcount, |
| 472 | RIO_STD_RTE_CONF_PORT_SEL_CSR, |
| 473 | (u32)route_port); |
| 474 | } |
| 475 | udelay(10); |
| 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * rio_std_route_get_entry - Read switch route table entry (port number) |
| 481 | * assosiated with specified destID using standard registers defined in RIO |
| 482 | * specification rev.1.3 |
| 483 | * @mport: Master port to issue transaction |
| 484 | * @destid: Destination ID of the device |
| 485 | * @hopcount: Number of switch hops to the device |
| 486 | * @table: routing table ID (global or port-specific) |
| 487 | * @route_destid: destID entry in the RT |
| 488 | * @route_port: returned destination port for specified destID |
| 489 | */ |
| 490 | int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, |
| 491 | u16 table, u16 route_destid, u8 *route_port) |
| 492 | { |
| 493 | u32 result; |
| 494 | |
| 495 | if (table == RIO_GLOBAL_TABLE) { |
| 496 | rio_mport_write_config_32(mport, destid, hopcount, |
| 497 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); |
| 498 | rio_mport_read_config_32(mport, destid, hopcount, |
| 499 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); |
| 500 | |
| 501 | *route_port = (u8)result; |
| 502 | } |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * rio_std_route_clr_table - Clear swotch route table using standard registers |
| 509 | * defined in RIO specification rev.1.3. |
| 510 | * @mport: Master port to issue transaction |
| 511 | * @local: Indicate a local master port or remote device access |
| 512 | * @destid: Destination ID of the device |
| 513 | * @hopcount: Number of switch hops to the device |
| 514 | * @table: routing table ID (global or port-specific) |
| 515 | */ |
| 516 | int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, |
| 517 | u16 table) |
| 518 | { |
| 519 | u32 max_destid = 0xff; |
| 520 | u32 i, pef, id_inc = 1, ext_cfg = 0; |
| 521 | u32 port_sel = RIO_INVALID_ROUTE; |
| 522 | |
| 523 | if (table == RIO_GLOBAL_TABLE) { |
| 524 | rio_mport_read_config_32(mport, destid, hopcount, |
| 525 | RIO_PEF_CAR, &pef); |
| 526 | |
| 527 | if (mport->sys_size) { |
| 528 | rio_mport_read_config_32(mport, destid, hopcount, |
| 529 | RIO_SWITCH_RT_LIMIT, |
| 530 | &max_destid); |
| 531 | max_destid &= RIO_RT_MAX_DESTID; |
| 532 | } |
| 533 | |
| 534 | if (pef & RIO_PEF_EXT_RT) { |
| 535 | ext_cfg = 0x80000000; |
| 536 | id_inc = 4; |
| 537 | port_sel = (RIO_INVALID_ROUTE << 24) | |
| 538 | (RIO_INVALID_ROUTE << 16) | |
| 539 | (RIO_INVALID_ROUTE << 8) | |
| 540 | RIO_INVALID_ROUTE; |
| 541 | } |
| 542 | |
| 543 | for (i = 0; i <= max_destid;) { |
| 544 | rio_mport_write_config_32(mport, destid, hopcount, |
| 545 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, |
| 546 | ext_cfg | i); |
| 547 | rio_mport_write_config_32(mport, destid, hopcount, |
| 548 | RIO_STD_RTE_CONF_PORT_SEL_CSR, |
| 549 | port_sel); |
| 550 | i += id_inc; |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | udelay(10); |
| 555 | return 0; |
| 556 | } |
| 557 | |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 558 | static void rio_fixup_device(struct rio_dev *dev) |
| 559 | { |
| 560 | } |
| 561 | |
| 562 | static int __devinit rio_init(void) |
| 563 | { |
| 564 | struct rio_dev *dev = NULL; |
| 565 | |
| 566 | while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) { |
| 567 | rio_fixup_device(dev); |
| 568 | } |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | device_initcall(rio_init); |
| 573 | |
Al Viro | 37d33d1 | 2008-11-22 17:36:24 +0000 | [diff] [blame] | 574 | int __devinit rio_init_mports(void) |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 575 | { |
| 576 | int rc = 0; |
| 577 | struct rio_mport *port; |
| 578 | |
| 579 | list_for_each_entry(port, &rio_mports, node) { |
| 580 | if (!request_mem_region(port->iores.start, |
| 581 | port->iores.end - port->iores.start, |
| 582 | port->name)) { |
| 583 | printk(KERN_ERR |
Kumar Gala | 5febf1c | 2008-01-23 05:53:47 -0600 | [diff] [blame] | 584 | "RIO: Error requesting master port region 0x%016llx-0x%016llx\n", |
| 585 | (u64)port->iores.start, (u64)port->iores.end - 1); |
Matt Porter | 394b701 | 2005-11-07 01:00:15 -0800 | [diff] [blame] | 586 | rc = -ENOMEM; |
| 587 | goto out; |
| 588 | } |
| 589 | |
| 590 | if (port->host_deviceid >= 0) |
| 591 | rio_enum_mport(port); |
| 592 | else |
| 593 | rio_disc_mport(port); |
| 594 | } |
| 595 | |
| 596 | out: |
| 597 | return rc; |
| 598 | } |
| 599 | |
| 600 | void rio_register_mport(struct rio_mport *port) |
| 601 | { |
| 602 | list_add_tail(&port->node, &rio_mports); |
| 603 | } |
| 604 | |
| 605 | EXPORT_SYMBOL_GPL(rio_local_get_device_id); |
| 606 | EXPORT_SYMBOL_GPL(rio_get_device); |
| 607 | EXPORT_SYMBOL_GPL(rio_get_asm); |
| 608 | EXPORT_SYMBOL_GPL(rio_request_inb_dbell); |
| 609 | EXPORT_SYMBOL_GPL(rio_release_inb_dbell); |
| 610 | EXPORT_SYMBOL_GPL(rio_request_outb_dbell); |
| 611 | EXPORT_SYMBOL_GPL(rio_release_outb_dbell); |
| 612 | EXPORT_SYMBOL_GPL(rio_request_inb_mbox); |
| 613 | EXPORT_SYMBOL_GPL(rio_release_inb_mbox); |
| 614 | EXPORT_SYMBOL_GPL(rio_request_outb_mbox); |
| 615 | EXPORT_SYMBOL_GPL(rio_release_outb_mbox); |