1394b701cSMatt Porter /* 2394b701cSMatt Porter * RapidIO interconnect services 3394b701cSMatt Porter * (RapidIO Interconnect Specification, http://www.rapidio.org) 4394b701cSMatt Porter * 5394b701cSMatt Porter * Copyright 2005 MontaVista Software, Inc. 6394b701cSMatt Porter * Matt Porter <mporter@kernel.crashing.org> 7394b701cSMatt Porter * 8e5cabeb3SAlexandre Bounine * Copyright 2009 Integrated Device Technology, Inc. 9e5cabeb3SAlexandre Bounine * Alex Bounine <alexandre.bounine@idt.com> 10e5cabeb3SAlexandre Bounine * - Added Port-Write/Error Management initialization and handling 11e5cabeb3SAlexandre Bounine * 12394b701cSMatt Porter * This program is free software; you can redistribute it and/or modify it 13394b701cSMatt Porter * under the terms of the GNU General Public License as published by the 14394b701cSMatt Porter * Free Software Foundation; either version 2 of the License, or (at your 15394b701cSMatt Porter * option) any later version. 16394b701cSMatt Porter */ 17394b701cSMatt Porter 18394b701cSMatt Porter #include <linux/types.h> 19394b701cSMatt Porter #include <linux/kernel.h> 20394b701cSMatt Porter 21394b701cSMatt Porter #include <linux/delay.h> 22394b701cSMatt Porter #include <linux/init.h> 23394b701cSMatt Porter #include <linux/rio.h> 24394b701cSMatt Porter #include <linux/rio_drv.h> 25394b701cSMatt Porter #include <linux/rio_ids.h> 26394b701cSMatt Porter #include <linux/rio_regs.h> 27394b701cSMatt Porter #include <linux/module.h> 28394b701cSMatt Porter #include <linux/spinlock.h> 29de25968cSTim Schmielau #include <linux/slab.h> 305febf1cdSKumar Gala #include <linux/interrupt.h> 31394b701cSMatt Porter 32394b701cSMatt Porter #include "rio.h" 33394b701cSMatt Porter 34394b701cSMatt Porter static LIST_HEAD(rio_mports); 35394b701cSMatt Porter 36394b701cSMatt Porter /** 37394b701cSMatt Porter * rio_local_get_device_id - Get the base/extended device id for a port 38394b701cSMatt Porter * @port: RIO master port from which to get the deviceid 39394b701cSMatt Porter * 40394b701cSMatt Porter * Reads the base/extended device id from the local device 41394b701cSMatt Porter * implementing the master port. Returns the 8/16-bit device 42394b701cSMatt Porter * id. 43394b701cSMatt Porter */ 44394b701cSMatt Porter u16 rio_local_get_device_id(struct rio_mport *port) 45394b701cSMatt Porter { 46394b701cSMatt Porter u32 result; 47394b701cSMatt Porter 48394b701cSMatt Porter rio_local_read_config_32(port, RIO_DID_CSR, &result); 49394b701cSMatt Porter 50e0423236SZhang Wei return (RIO_GET_DID(port->sys_size, result)); 51394b701cSMatt Porter } 52394b701cSMatt Porter 53394b701cSMatt Porter /** 54394b701cSMatt Porter * rio_request_inb_mbox - request inbound mailbox service 55394b701cSMatt Porter * @mport: RIO master port from which to allocate the mailbox resource 566978bbc0SMatt Porter * @dev_id: Device specific pointer to pass on event 57394b701cSMatt Porter * @mbox: Mailbox number to claim 58394b701cSMatt Porter * @entries: Number of entries in inbound mailbox queue 59394b701cSMatt Porter * @minb: Callback to execute when inbound message is received 60394b701cSMatt Porter * 61394b701cSMatt Porter * Requests ownership of an inbound mailbox resource and binds 62394b701cSMatt Porter * a callback function to the resource. Returns %0 on success. 63394b701cSMatt Porter */ 64394b701cSMatt Porter int rio_request_inb_mbox(struct rio_mport *mport, 656978bbc0SMatt Porter void *dev_id, 66394b701cSMatt Porter int mbox, 67394b701cSMatt Porter int entries, 686978bbc0SMatt Porter void (*minb) (struct rio_mport * mport, void *dev_id, int mbox, 69394b701cSMatt Porter int slot)) 70394b701cSMatt Porter { 71394b701cSMatt Porter int rc = 0; 72394b701cSMatt Porter 73394b701cSMatt Porter struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); 74394b701cSMatt Porter 75394b701cSMatt Porter if (res) { 76394b701cSMatt Porter rio_init_mbox_res(res, mbox, mbox); 77394b701cSMatt Porter 78394b701cSMatt Porter /* Make sure this mailbox isn't in use */ 79394b701cSMatt Porter if ((rc = 80394b701cSMatt Porter request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE], 81394b701cSMatt Porter res)) < 0) { 82394b701cSMatt Porter kfree(res); 83394b701cSMatt Porter goto out; 84394b701cSMatt Porter } 85394b701cSMatt Porter 86394b701cSMatt Porter mport->inb_msg[mbox].res = res; 87394b701cSMatt Porter 88394b701cSMatt Porter /* Hook the inbound message callback */ 89394b701cSMatt Porter mport->inb_msg[mbox].mcback = minb; 90394b701cSMatt Porter 916978bbc0SMatt Porter rc = rio_open_inb_mbox(mport, dev_id, mbox, entries); 92394b701cSMatt Porter } else 93394b701cSMatt Porter rc = -ENOMEM; 94394b701cSMatt Porter 95394b701cSMatt Porter out: 96394b701cSMatt Porter return rc; 97394b701cSMatt Porter } 98394b701cSMatt Porter 99394b701cSMatt Porter /** 100394b701cSMatt Porter * rio_release_inb_mbox - release inbound mailbox message service 101394b701cSMatt Porter * @mport: RIO master port from which to release the mailbox resource 102394b701cSMatt Porter * @mbox: Mailbox number to release 103394b701cSMatt Porter * 104394b701cSMatt Porter * Releases ownership of an inbound mailbox resource. Returns 0 105394b701cSMatt Porter * if the request has been satisfied. 106394b701cSMatt Porter */ 107394b701cSMatt Porter int rio_release_inb_mbox(struct rio_mport *mport, int mbox) 108394b701cSMatt Porter { 109394b701cSMatt Porter rio_close_inb_mbox(mport, mbox); 110394b701cSMatt Porter 111394b701cSMatt Porter /* Release the mailbox resource */ 112394b701cSMatt Porter return release_resource(mport->inb_msg[mbox].res); 113394b701cSMatt Porter } 114394b701cSMatt Porter 115394b701cSMatt Porter /** 116394b701cSMatt Porter * rio_request_outb_mbox - request outbound mailbox service 117394b701cSMatt Porter * @mport: RIO master port from which to allocate the mailbox resource 1186978bbc0SMatt Porter * @dev_id: Device specific pointer to pass on event 119394b701cSMatt Porter * @mbox: Mailbox number to claim 120394b701cSMatt Porter * @entries: Number of entries in outbound mailbox queue 121394b701cSMatt Porter * @moutb: Callback to execute when outbound message is sent 122394b701cSMatt Porter * 123394b701cSMatt Porter * Requests ownership of an outbound mailbox resource and binds 124394b701cSMatt Porter * a callback function to the resource. Returns 0 on success. 125394b701cSMatt Porter */ 126394b701cSMatt Porter int rio_request_outb_mbox(struct rio_mport *mport, 1276978bbc0SMatt Porter void *dev_id, 128394b701cSMatt Porter int mbox, 129394b701cSMatt Porter int entries, 1306978bbc0SMatt Porter void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot)) 131394b701cSMatt Porter { 132394b701cSMatt Porter int rc = 0; 133394b701cSMatt Porter 134394b701cSMatt Porter struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); 135394b701cSMatt Porter 136394b701cSMatt Porter if (res) { 137394b701cSMatt Porter rio_init_mbox_res(res, mbox, mbox); 138394b701cSMatt Porter 139394b701cSMatt Porter /* Make sure this outbound mailbox isn't in use */ 140394b701cSMatt Porter if ((rc = 141394b701cSMatt Porter request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 142394b701cSMatt Porter res)) < 0) { 143394b701cSMatt Porter kfree(res); 144394b701cSMatt Porter goto out; 145394b701cSMatt Porter } 146394b701cSMatt Porter 147394b701cSMatt Porter mport->outb_msg[mbox].res = res; 148394b701cSMatt Porter 149394b701cSMatt Porter /* Hook the inbound message callback */ 150394b701cSMatt Porter mport->outb_msg[mbox].mcback = moutb; 151394b701cSMatt Porter 1526978bbc0SMatt Porter rc = rio_open_outb_mbox(mport, dev_id, mbox, entries); 153394b701cSMatt Porter } else 154394b701cSMatt Porter rc = -ENOMEM; 155394b701cSMatt Porter 156394b701cSMatt Porter out: 157394b701cSMatt Porter return rc; 158394b701cSMatt Porter } 159394b701cSMatt Porter 160394b701cSMatt Porter /** 161394b701cSMatt Porter * rio_release_outb_mbox - release outbound mailbox message service 162394b701cSMatt Porter * @mport: RIO master port from which to release the mailbox resource 163394b701cSMatt Porter * @mbox: Mailbox number to release 164394b701cSMatt Porter * 165394b701cSMatt Porter * Releases ownership of an inbound mailbox resource. Returns 0 166394b701cSMatt Porter * if the request has been satisfied. 167394b701cSMatt Porter */ 168394b701cSMatt Porter int rio_release_outb_mbox(struct rio_mport *mport, int mbox) 169394b701cSMatt Porter { 170394b701cSMatt Porter rio_close_outb_mbox(mport, mbox); 171394b701cSMatt Porter 172394b701cSMatt Porter /* Release the mailbox resource */ 173394b701cSMatt Porter return release_resource(mport->outb_msg[mbox].res); 174394b701cSMatt Porter } 175394b701cSMatt Porter 176394b701cSMatt Porter /** 177394b701cSMatt Porter * rio_setup_inb_dbell - bind inbound doorbell callback 178394b701cSMatt Porter * @mport: RIO master port to bind the doorbell callback 1796978bbc0SMatt Porter * @dev_id: Device specific pointer to pass on event 180394b701cSMatt Porter * @res: Doorbell message resource 181394b701cSMatt Porter * @dinb: Callback to execute when doorbell is received 182394b701cSMatt Porter * 183394b701cSMatt Porter * Adds a doorbell resource/callback pair into a port's 184394b701cSMatt Porter * doorbell event list. Returns 0 if the request has been 185394b701cSMatt Porter * satisfied. 186394b701cSMatt Porter */ 187394b701cSMatt Porter static int 1886978bbc0SMatt Porter rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res, 1896978bbc0SMatt Porter void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, u16 dst, 190394b701cSMatt Porter u16 info)) 191394b701cSMatt Porter { 192394b701cSMatt Porter int rc = 0; 193394b701cSMatt Porter struct rio_dbell *dbell; 194394b701cSMatt Porter 195394b701cSMatt Porter if (!(dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL))) { 196394b701cSMatt Porter rc = -ENOMEM; 197394b701cSMatt Porter goto out; 198394b701cSMatt Porter } 199394b701cSMatt Porter 200394b701cSMatt Porter dbell->res = res; 201394b701cSMatt Porter dbell->dinb = dinb; 2026978bbc0SMatt Porter dbell->dev_id = dev_id; 203394b701cSMatt Porter 204394b701cSMatt Porter list_add_tail(&dbell->node, &mport->dbells); 205394b701cSMatt Porter 206394b701cSMatt Porter out: 207394b701cSMatt Porter return rc; 208394b701cSMatt Porter } 209394b701cSMatt Porter 210394b701cSMatt Porter /** 211394b701cSMatt Porter * rio_request_inb_dbell - request inbound doorbell message service 212394b701cSMatt Porter * @mport: RIO master port from which to allocate the doorbell resource 2136978bbc0SMatt Porter * @dev_id: Device specific pointer to pass on event 214394b701cSMatt Porter * @start: Doorbell info range start 215394b701cSMatt Porter * @end: Doorbell info range end 216394b701cSMatt Porter * @dinb: Callback to execute when doorbell is received 217394b701cSMatt Porter * 218394b701cSMatt Porter * Requests ownership of an inbound doorbell resource and binds 219394b701cSMatt Porter * a callback function to the resource. Returns 0 if the request 220394b701cSMatt Porter * has been satisfied. 221394b701cSMatt Porter */ 222394b701cSMatt Porter int rio_request_inb_dbell(struct rio_mport *mport, 2236978bbc0SMatt Porter void *dev_id, 224394b701cSMatt Porter u16 start, 225394b701cSMatt Porter u16 end, 2266978bbc0SMatt Porter void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, 227394b701cSMatt Porter u16 dst, u16 info)) 228394b701cSMatt Porter { 229394b701cSMatt Porter int rc = 0; 230394b701cSMatt Porter 231394b701cSMatt Porter struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); 232394b701cSMatt Porter 233394b701cSMatt Porter if (res) { 234394b701cSMatt Porter rio_init_dbell_res(res, start, end); 235394b701cSMatt Porter 236394b701cSMatt Porter /* Make sure these doorbells aren't in use */ 237394b701cSMatt Porter if ((rc = 238394b701cSMatt Porter request_resource(&mport->riores[RIO_DOORBELL_RESOURCE], 239394b701cSMatt Porter res)) < 0) { 240394b701cSMatt Porter kfree(res); 241394b701cSMatt Porter goto out; 242394b701cSMatt Porter } 243394b701cSMatt Porter 244394b701cSMatt Porter /* Hook the doorbell callback */ 2456978bbc0SMatt Porter rc = rio_setup_inb_dbell(mport, dev_id, res, dinb); 246394b701cSMatt Porter } else 247394b701cSMatt Porter rc = -ENOMEM; 248394b701cSMatt Porter 249394b701cSMatt Porter out: 250394b701cSMatt Porter return rc; 251394b701cSMatt Porter } 252394b701cSMatt Porter 253394b701cSMatt Porter /** 254394b701cSMatt Porter * rio_release_inb_dbell - release inbound doorbell message service 255394b701cSMatt Porter * @mport: RIO master port from which to release the doorbell resource 256394b701cSMatt Porter * @start: Doorbell info range start 257394b701cSMatt Porter * @end: Doorbell info range end 258394b701cSMatt Porter * 259394b701cSMatt Porter * Releases ownership of an inbound doorbell resource and removes 260394b701cSMatt Porter * callback from the doorbell event list. Returns 0 if the request 261394b701cSMatt Porter * has been satisfied. 262394b701cSMatt Porter */ 263394b701cSMatt Porter int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end) 264394b701cSMatt Porter { 265394b701cSMatt Porter int rc = 0, found = 0; 266394b701cSMatt Porter struct rio_dbell *dbell; 267394b701cSMatt Porter 268394b701cSMatt Porter list_for_each_entry(dbell, &mport->dbells, node) { 269394b701cSMatt Porter if ((dbell->res->start == start) && (dbell->res->end == end)) { 270394b701cSMatt Porter found = 1; 271394b701cSMatt Porter break; 272394b701cSMatt Porter } 273394b701cSMatt Porter } 274394b701cSMatt Porter 275394b701cSMatt Porter /* If we can't find an exact match, fail */ 276394b701cSMatt Porter if (!found) { 277394b701cSMatt Porter rc = -EINVAL; 278394b701cSMatt Porter goto out; 279394b701cSMatt Porter } 280394b701cSMatt Porter 281394b701cSMatt Porter /* Delete from list */ 282394b701cSMatt Porter list_del(&dbell->node); 283394b701cSMatt Porter 284394b701cSMatt Porter /* Release the doorbell resource */ 285394b701cSMatt Porter rc = release_resource(dbell->res); 286394b701cSMatt Porter 287394b701cSMatt Porter /* Free the doorbell event */ 288394b701cSMatt Porter kfree(dbell); 289394b701cSMatt Porter 290394b701cSMatt Porter out: 291394b701cSMatt Porter return rc; 292394b701cSMatt Porter } 293394b701cSMatt Porter 294394b701cSMatt Porter /** 295394b701cSMatt Porter * rio_request_outb_dbell - request outbound doorbell message range 296394b701cSMatt Porter * @rdev: RIO device from which to allocate the doorbell resource 297394b701cSMatt Porter * @start: Doorbell message range start 298394b701cSMatt Porter * @end: Doorbell message range end 299394b701cSMatt Porter * 300394b701cSMatt Porter * Requests ownership of a doorbell message range. Returns a resource 301394b701cSMatt Porter * if the request has been satisfied or %NULL on failure. 302394b701cSMatt Porter */ 303394b701cSMatt Porter struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start, 304394b701cSMatt Porter u16 end) 305394b701cSMatt Porter { 306394b701cSMatt Porter struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); 307394b701cSMatt Porter 308394b701cSMatt Porter if (res) { 309394b701cSMatt Porter rio_init_dbell_res(res, start, end); 310394b701cSMatt Porter 311394b701cSMatt Porter /* Make sure these doorbells aren't in use */ 312394b701cSMatt Porter if (request_resource(&rdev->riores[RIO_DOORBELL_RESOURCE], res) 313394b701cSMatt Porter < 0) { 314394b701cSMatt Porter kfree(res); 315394b701cSMatt Porter res = NULL; 316394b701cSMatt Porter } 317394b701cSMatt Porter } 318394b701cSMatt Porter 319394b701cSMatt Porter return res; 320394b701cSMatt Porter } 321394b701cSMatt Porter 322394b701cSMatt Porter /** 323394b701cSMatt Porter * rio_release_outb_dbell - release outbound doorbell message range 324394b701cSMatt Porter * @rdev: RIO device from which to release the doorbell resource 325394b701cSMatt Porter * @res: Doorbell resource to be freed 326394b701cSMatt Porter * 327394b701cSMatt Porter * Releases ownership of a doorbell message range. Returns 0 if the 328394b701cSMatt Porter * request has been satisfied. 329394b701cSMatt Porter */ 330394b701cSMatt Porter int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res) 331394b701cSMatt Porter { 332394b701cSMatt Porter int rc = release_resource(res); 333394b701cSMatt Porter 334394b701cSMatt Porter kfree(res); 335394b701cSMatt Porter 336394b701cSMatt Porter return rc; 337394b701cSMatt Porter } 338394b701cSMatt Porter 339394b701cSMatt Porter /** 340e5cabeb3SAlexandre Bounine * rio_request_inb_pwrite - request inbound port-write message service 34197ef6f74SRandy Dunlap * @rdev: RIO device to which register inbound port-write callback routine 342e5cabeb3SAlexandre Bounine * @pwcback: Callback routine to execute when port-write is received 343e5cabeb3SAlexandre Bounine * 344e5cabeb3SAlexandre Bounine * Binds a port-write callback function to the RapidIO device. 345e5cabeb3SAlexandre Bounine * Returns 0 if the request has been satisfied. 346e5cabeb3SAlexandre Bounine */ 347e5cabeb3SAlexandre Bounine int rio_request_inb_pwrite(struct rio_dev *rdev, 348e5cabeb3SAlexandre Bounine int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step)) 349e5cabeb3SAlexandre Bounine { 350e5cabeb3SAlexandre Bounine int rc = 0; 351e5cabeb3SAlexandre Bounine 352e5cabeb3SAlexandre Bounine spin_lock(&rio_global_list_lock); 353e5cabeb3SAlexandre Bounine if (rdev->pwcback != NULL) 354e5cabeb3SAlexandre Bounine rc = -ENOMEM; 355e5cabeb3SAlexandre Bounine else 356e5cabeb3SAlexandre Bounine rdev->pwcback = pwcback; 357e5cabeb3SAlexandre Bounine 358e5cabeb3SAlexandre Bounine spin_unlock(&rio_global_list_lock); 359e5cabeb3SAlexandre Bounine return rc; 360e5cabeb3SAlexandre Bounine } 361e5cabeb3SAlexandre Bounine EXPORT_SYMBOL_GPL(rio_request_inb_pwrite); 362e5cabeb3SAlexandre Bounine 363e5cabeb3SAlexandre Bounine /** 364e5cabeb3SAlexandre Bounine * rio_release_inb_pwrite - release inbound port-write message service 365e5cabeb3SAlexandre Bounine * @rdev: RIO device which registered for inbound port-write callback 366e5cabeb3SAlexandre Bounine * 367e5cabeb3SAlexandre Bounine * Removes callback from the rio_dev structure. Returns 0 if the request 368e5cabeb3SAlexandre Bounine * has been satisfied. 369e5cabeb3SAlexandre Bounine */ 370e5cabeb3SAlexandre Bounine int rio_release_inb_pwrite(struct rio_dev *rdev) 371e5cabeb3SAlexandre Bounine { 372e5cabeb3SAlexandre Bounine int rc = -ENOMEM; 373e5cabeb3SAlexandre Bounine 374e5cabeb3SAlexandre Bounine spin_lock(&rio_global_list_lock); 375e5cabeb3SAlexandre Bounine if (rdev->pwcback) { 376e5cabeb3SAlexandre Bounine rdev->pwcback = NULL; 377e5cabeb3SAlexandre Bounine rc = 0; 378e5cabeb3SAlexandre Bounine } 379e5cabeb3SAlexandre Bounine 380e5cabeb3SAlexandre Bounine spin_unlock(&rio_global_list_lock); 381e5cabeb3SAlexandre Bounine return rc; 382e5cabeb3SAlexandre Bounine } 383e5cabeb3SAlexandre Bounine EXPORT_SYMBOL_GPL(rio_release_inb_pwrite); 384e5cabeb3SAlexandre Bounine 385e5cabeb3SAlexandre Bounine /** 386e5cabeb3SAlexandre Bounine * rio_mport_get_physefb - Helper function that returns register offset 387e5cabeb3SAlexandre Bounine * for Physical Layer Extended Features Block. 38897ef6f74SRandy Dunlap * @port: Master port to issue transaction 38997ef6f74SRandy Dunlap * @local: Indicate a local master port or remote device access 39097ef6f74SRandy Dunlap * @destid: Destination ID of the device 39197ef6f74SRandy Dunlap * @hopcount: Number of switch hops to the device 392e5cabeb3SAlexandre Bounine */ 393e5cabeb3SAlexandre Bounine u32 394e5cabeb3SAlexandre Bounine rio_mport_get_physefb(struct rio_mport *port, int local, 395e5cabeb3SAlexandre Bounine u16 destid, u8 hopcount) 396e5cabeb3SAlexandre Bounine { 397e5cabeb3SAlexandre Bounine u32 ext_ftr_ptr; 398e5cabeb3SAlexandre Bounine u32 ftr_header; 399e5cabeb3SAlexandre Bounine 400e5cabeb3SAlexandre Bounine ext_ftr_ptr = rio_mport_get_efb(port, local, destid, hopcount, 0); 401e5cabeb3SAlexandre Bounine 402e5cabeb3SAlexandre Bounine while (ext_ftr_ptr) { 403e5cabeb3SAlexandre Bounine if (local) 404e5cabeb3SAlexandre Bounine rio_local_read_config_32(port, ext_ftr_ptr, 405e5cabeb3SAlexandre Bounine &ftr_header); 406e5cabeb3SAlexandre Bounine else 407e5cabeb3SAlexandre Bounine rio_mport_read_config_32(port, destid, hopcount, 408e5cabeb3SAlexandre Bounine ext_ftr_ptr, &ftr_header); 409e5cabeb3SAlexandre Bounine 410e5cabeb3SAlexandre Bounine ftr_header = RIO_GET_BLOCK_ID(ftr_header); 411e5cabeb3SAlexandre Bounine switch (ftr_header) { 412e5cabeb3SAlexandre Bounine 413e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_ID_V13P: 414e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_REC_ID_V13P: 415e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_FREE_ID_V13P: 416e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_ID: 417e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_REC_ID: 418e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_FREE_ID: 419e5cabeb3SAlexandre Bounine case RIO_EFB_SER_EP_FREC_ID: 420e5cabeb3SAlexandre Bounine 421e5cabeb3SAlexandre Bounine return ext_ftr_ptr; 422e5cabeb3SAlexandre Bounine 423e5cabeb3SAlexandre Bounine default: 424e5cabeb3SAlexandre Bounine break; 425e5cabeb3SAlexandre Bounine } 426e5cabeb3SAlexandre Bounine 427e5cabeb3SAlexandre Bounine ext_ftr_ptr = rio_mport_get_efb(port, local, destid, 428e5cabeb3SAlexandre Bounine hopcount, ext_ftr_ptr); 429e5cabeb3SAlexandre Bounine } 430e5cabeb3SAlexandre Bounine 431e5cabeb3SAlexandre Bounine return ext_ftr_ptr; 432e5cabeb3SAlexandre Bounine } 433e5cabeb3SAlexandre Bounine 434e5cabeb3SAlexandre Bounine /** 435e5cabeb3SAlexandre Bounine * rio_get_comptag - Begin or continue searching for a RIO device by component tag 43697ef6f74SRandy Dunlap * @comp_tag: RIO component tag to match 437e5cabeb3SAlexandre Bounine * @from: Previous RIO device found in search, or %NULL for new search 438e5cabeb3SAlexandre Bounine * 439e5cabeb3SAlexandre Bounine * Iterates through the list of known RIO devices. If a RIO device is 440e5cabeb3SAlexandre Bounine * found with a matching @comp_tag, a pointer to its device 441e5cabeb3SAlexandre Bounine * structure is returned. Otherwise, %NULL is returned. A new search 442e5cabeb3SAlexandre Bounine * is initiated by passing %NULL to the @from argument. Otherwise, if 443e5cabeb3SAlexandre Bounine * @from is not %NULL, searches continue from next device on the global 444e5cabeb3SAlexandre Bounine * list. 445e5cabeb3SAlexandre Bounine */ 446e5cabeb3SAlexandre Bounine static struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from) 447e5cabeb3SAlexandre Bounine { 448e5cabeb3SAlexandre Bounine struct list_head *n; 449e5cabeb3SAlexandre Bounine struct rio_dev *rdev; 450e5cabeb3SAlexandre Bounine 451e5cabeb3SAlexandre Bounine spin_lock(&rio_global_list_lock); 452e5cabeb3SAlexandre Bounine n = from ? from->global_list.next : rio_devices.next; 453e5cabeb3SAlexandre Bounine 454e5cabeb3SAlexandre Bounine while (n && (n != &rio_devices)) { 455e5cabeb3SAlexandre Bounine rdev = rio_dev_g(n); 456e5cabeb3SAlexandre Bounine if (rdev->comp_tag == comp_tag) 457e5cabeb3SAlexandre Bounine goto exit; 458e5cabeb3SAlexandre Bounine n = n->next; 459e5cabeb3SAlexandre Bounine } 460e5cabeb3SAlexandre Bounine rdev = NULL; 461e5cabeb3SAlexandre Bounine exit: 462e5cabeb3SAlexandre Bounine spin_unlock(&rio_global_list_lock); 463e5cabeb3SAlexandre Bounine return rdev; 464e5cabeb3SAlexandre Bounine } 465e5cabeb3SAlexandre Bounine 466e5cabeb3SAlexandre Bounine /** 467e5cabeb3SAlexandre Bounine * rio_set_port_lockout - Sets/clears LOCKOUT bit (RIO EM 1.3) for a switch port. 468e5cabeb3SAlexandre Bounine * @rdev: Pointer to RIO device control structure 469e5cabeb3SAlexandre Bounine * @pnum: Switch port number to set LOCKOUT bit 470e5cabeb3SAlexandre Bounine * @lock: Operation : set (=1) or clear (=0) 471e5cabeb3SAlexandre Bounine */ 472e5cabeb3SAlexandre Bounine int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock) 473e5cabeb3SAlexandre Bounine { 474e5cabeb3SAlexandre Bounine u8 hopcount = 0xff; 475e5cabeb3SAlexandre Bounine u16 destid = rdev->destid; 476e5cabeb3SAlexandre Bounine u32 regval; 477e5cabeb3SAlexandre Bounine 478e5cabeb3SAlexandre Bounine if (rdev->rswitch) { 479e5cabeb3SAlexandre Bounine destid = rdev->rswitch->destid; 480e5cabeb3SAlexandre Bounine hopcount = rdev->rswitch->hopcount; 481e5cabeb3SAlexandre Bounine } 482e5cabeb3SAlexandre Bounine 483e5cabeb3SAlexandre Bounine rio_mport_read_config_32(rdev->net->hport, destid, hopcount, 484e5cabeb3SAlexandre Bounine rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), 485e5cabeb3SAlexandre Bounine ®val); 486e5cabeb3SAlexandre Bounine if (lock) 487e5cabeb3SAlexandre Bounine regval |= RIO_PORT_N_CTL_LOCKOUT; 488e5cabeb3SAlexandre Bounine else 489e5cabeb3SAlexandre Bounine regval &= ~RIO_PORT_N_CTL_LOCKOUT; 490e5cabeb3SAlexandre Bounine 491e5cabeb3SAlexandre Bounine rio_mport_write_config_32(rdev->net->hport, destid, hopcount, 492e5cabeb3SAlexandre Bounine rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), 493e5cabeb3SAlexandre Bounine regval); 494e5cabeb3SAlexandre Bounine return 0; 495e5cabeb3SAlexandre Bounine } 496e5cabeb3SAlexandre Bounine 497e5cabeb3SAlexandre Bounine /** 498e5cabeb3SAlexandre Bounine * rio_inb_pwrite_handler - process inbound port-write message 499e5cabeb3SAlexandre Bounine * @pw_msg: pointer to inbound port-write message 500e5cabeb3SAlexandre Bounine * 501e5cabeb3SAlexandre Bounine * Processes an inbound port-write message. Returns 0 if the request 502e5cabeb3SAlexandre Bounine * has been satisfied. 503e5cabeb3SAlexandre Bounine */ 504e5cabeb3SAlexandre Bounine int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg) 505e5cabeb3SAlexandre Bounine { 506e5cabeb3SAlexandre Bounine struct rio_dev *rdev; 507e5cabeb3SAlexandre Bounine struct rio_mport *mport; 508e5cabeb3SAlexandre Bounine u8 hopcount; 509e5cabeb3SAlexandre Bounine u16 destid; 510e5cabeb3SAlexandre Bounine u32 err_status; 511e5cabeb3SAlexandre Bounine int rc, portnum; 512e5cabeb3SAlexandre Bounine 513e5cabeb3SAlexandre Bounine rdev = rio_get_comptag(pw_msg->em.comptag, NULL); 514e5cabeb3SAlexandre Bounine if (rdev == NULL) { 515e5cabeb3SAlexandre Bounine /* Someting bad here (probably enumeration error) */ 516e5cabeb3SAlexandre Bounine pr_err("RIO: %s No matching device for CTag 0x%08x\n", 517e5cabeb3SAlexandre Bounine __func__, pw_msg->em.comptag); 518e5cabeb3SAlexandre Bounine return -EIO; 519e5cabeb3SAlexandre Bounine } 520e5cabeb3SAlexandre Bounine 521e5cabeb3SAlexandre Bounine pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev)); 522e5cabeb3SAlexandre Bounine 523e5cabeb3SAlexandre Bounine #ifdef DEBUG_PW 524e5cabeb3SAlexandre Bounine { 525e5cabeb3SAlexandre Bounine u32 i; 526e5cabeb3SAlexandre Bounine for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) { 527e5cabeb3SAlexandre Bounine pr_debug("0x%02x: %08x %08x %08x %08x", 528e5cabeb3SAlexandre Bounine i*4, pw_msg->raw[i], pw_msg->raw[i + 1], 529e5cabeb3SAlexandre Bounine pw_msg->raw[i + 2], pw_msg->raw[i + 3]); 530e5cabeb3SAlexandre Bounine i += 4; 531e5cabeb3SAlexandre Bounine } 532e5cabeb3SAlexandre Bounine pr_debug("\n"); 533e5cabeb3SAlexandre Bounine } 534e5cabeb3SAlexandre Bounine #endif 535e5cabeb3SAlexandre Bounine 536e5cabeb3SAlexandre Bounine /* Call an external service function (if such is registered 537e5cabeb3SAlexandre Bounine * for this device). This may be the service for endpoints that send 538e5cabeb3SAlexandre Bounine * device-specific port-write messages. End-point messages expected 539e5cabeb3SAlexandre Bounine * to be handled completely by EP specific device driver. 540e5cabeb3SAlexandre Bounine * For switches rc==0 signals that no standard processing required. 541e5cabeb3SAlexandre Bounine */ 542e5cabeb3SAlexandre Bounine if (rdev->pwcback != NULL) { 543e5cabeb3SAlexandre Bounine rc = rdev->pwcback(rdev, pw_msg, 0); 544e5cabeb3SAlexandre Bounine if (rc == 0) 545e5cabeb3SAlexandre Bounine return 0; 546e5cabeb3SAlexandre Bounine } 547e5cabeb3SAlexandre Bounine 548e5cabeb3SAlexandre Bounine /* For End-point devices processing stops here */ 549e5cabeb3SAlexandre Bounine if (!(rdev->pef & RIO_PEF_SWITCH)) 550e5cabeb3SAlexandre Bounine return 0; 551e5cabeb3SAlexandre Bounine 552e5cabeb3SAlexandre Bounine if (rdev->phys_efptr == 0) { 553e5cabeb3SAlexandre Bounine pr_err("RIO_PW: Bad switch initialization for %s\n", 554e5cabeb3SAlexandre Bounine rio_name(rdev)); 555e5cabeb3SAlexandre Bounine return 0; 556e5cabeb3SAlexandre Bounine } 557e5cabeb3SAlexandre Bounine 558e5cabeb3SAlexandre Bounine mport = rdev->net->hport; 559e5cabeb3SAlexandre Bounine destid = rdev->rswitch->destid; 560e5cabeb3SAlexandre Bounine hopcount = rdev->rswitch->hopcount; 561e5cabeb3SAlexandre Bounine 562e5cabeb3SAlexandre Bounine /* 563e5cabeb3SAlexandre Bounine * Process the port-write notification from switch 564e5cabeb3SAlexandre Bounine */ 565e5cabeb3SAlexandre Bounine 566e5cabeb3SAlexandre Bounine portnum = pw_msg->em.is_port & 0xFF; 567e5cabeb3SAlexandre Bounine 568e5cabeb3SAlexandre Bounine if (rdev->rswitch->em_handle) 569e5cabeb3SAlexandre Bounine rdev->rswitch->em_handle(rdev, portnum); 570e5cabeb3SAlexandre Bounine 571e5cabeb3SAlexandre Bounine rio_mport_read_config_32(mport, destid, hopcount, 572e5cabeb3SAlexandre Bounine rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), 573e5cabeb3SAlexandre Bounine &err_status); 574e5cabeb3SAlexandre Bounine pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status); 575e5cabeb3SAlexandre Bounine 576e5cabeb3SAlexandre Bounine if (pw_msg->em.errdetect) { 577e5cabeb3SAlexandre Bounine pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n", 578e5cabeb3SAlexandre Bounine portnum, pw_msg->em.errdetect); 579e5cabeb3SAlexandre Bounine /* Clear EM Port N Error Detect CSR */ 580e5cabeb3SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 581e5cabeb3SAlexandre Bounine rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0); 582e5cabeb3SAlexandre Bounine } 583e5cabeb3SAlexandre Bounine 584e5cabeb3SAlexandre Bounine if (pw_msg->em.ltlerrdet) { 585e5cabeb3SAlexandre Bounine pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n", 586e5cabeb3SAlexandre Bounine pw_msg->em.ltlerrdet); 587e5cabeb3SAlexandre Bounine /* Clear EM L/T Layer Error Detect CSR */ 588e5cabeb3SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 589e5cabeb3SAlexandre Bounine rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0); 590e5cabeb3SAlexandre Bounine } 591e5cabeb3SAlexandre Bounine 592e5cabeb3SAlexandre Bounine /* Clear Port Errors */ 593e5cabeb3SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 594e5cabeb3SAlexandre Bounine rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), 595e5cabeb3SAlexandre Bounine err_status & RIO_PORT_N_ERR_STS_CLR_MASK); 596e5cabeb3SAlexandre Bounine 597e5cabeb3SAlexandre Bounine if (rdev->rswitch->port_ok & (1 << portnum)) { 598e5cabeb3SAlexandre Bounine if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) { 599e5cabeb3SAlexandre Bounine rdev->rswitch->port_ok &= ~(1 << portnum); 600e5cabeb3SAlexandre Bounine rio_set_port_lockout(rdev, portnum, 1); 601e5cabeb3SAlexandre Bounine 602e5cabeb3SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 603e5cabeb3SAlexandre Bounine rdev->phys_efptr + 604e5cabeb3SAlexandre Bounine RIO_PORT_N_ACK_STS_CSR(portnum), 605e5cabeb3SAlexandre Bounine RIO_PORT_N_ACK_CLEAR); 606e5cabeb3SAlexandre Bounine 607e5cabeb3SAlexandre Bounine /* Schedule Extraction Service */ 608e5cabeb3SAlexandre Bounine pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n", 609e5cabeb3SAlexandre Bounine rio_name(rdev), portnum); 610e5cabeb3SAlexandre Bounine } 611e5cabeb3SAlexandre Bounine } else { 612e5cabeb3SAlexandre Bounine if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) { 613e5cabeb3SAlexandre Bounine rdev->rswitch->port_ok |= (1 << portnum); 614e5cabeb3SAlexandre Bounine rio_set_port_lockout(rdev, portnum, 0); 615e5cabeb3SAlexandre Bounine 616e5cabeb3SAlexandre Bounine /* Schedule Insertion Service */ 617e5cabeb3SAlexandre Bounine pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n", 618e5cabeb3SAlexandre Bounine rio_name(rdev), portnum); 619e5cabeb3SAlexandre Bounine } 620e5cabeb3SAlexandre Bounine } 621e5cabeb3SAlexandre Bounine 622e5cabeb3SAlexandre Bounine /* Clear Port-Write Pending bit */ 623e5cabeb3SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 624e5cabeb3SAlexandre Bounine rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), 625e5cabeb3SAlexandre Bounine RIO_PORT_N_ERR_STS_PW_PEND); 626e5cabeb3SAlexandre Bounine 627e5cabeb3SAlexandre Bounine return 0; 628e5cabeb3SAlexandre Bounine } 629e5cabeb3SAlexandre Bounine EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler); 630e5cabeb3SAlexandre Bounine 631e5cabeb3SAlexandre Bounine /** 632e5cabeb3SAlexandre Bounine * rio_mport_get_efb - get pointer to next extended features block 633e5cabeb3SAlexandre Bounine * @port: Master port to issue transaction 634e5cabeb3SAlexandre Bounine * @local: Indicate a local master port or remote device access 635e5cabeb3SAlexandre Bounine * @destid: Destination ID of the device 636e5cabeb3SAlexandre Bounine * @hopcount: Number of switch hops to the device 637e5cabeb3SAlexandre Bounine * @from: Offset of current Extended Feature block header (if 0 starts 638e5cabeb3SAlexandre Bounine * from ExtFeaturePtr) 639e5cabeb3SAlexandre Bounine */ 640e5cabeb3SAlexandre Bounine u32 641e5cabeb3SAlexandre Bounine rio_mport_get_efb(struct rio_mport *port, int local, u16 destid, 642e5cabeb3SAlexandre Bounine u8 hopcount, u32 from) 643e5cabeb3SAlexandre Bounine { 644e5cabeb3SAlexandre Bounine u32 reg_val; 645e5cabeb3SAlexandre Bounine 646e5cabeb3SAlexandre Bounine if (from == 0) { 647e5cabeb3SAlexandre Bounine if (local) 648e5cabeb3SAlexandre Bounine rio_local_read_config_32(port, RIO_ASM_INFO_CAR, 649e5cabeb3SAlexandre Bounine ®_val); 650e5cabeb3SAlexandre Bounine else 651e5cabeb3SAlexandre Bounine rio_mport_read_config_32(port, destid, hopcount, 652e5cabeb3SAlexandre Bounine RIO_ASM_INFO_CAR, ®_val); 653e5cabeb3SAlexandre Bounine return reg_val & RIO_EXT_FTR_PTR_MASK; 654e5cabeb3SAlexandre Bounine } else { 655e5cabeb3SAlexandre Bounine if (local) 656e5cabeb3SAlexandre Bounine rio_local_read_config_32(port, from, ®_val); 657e5cabeb3SAlexandre Bounine else 658e5cabeb3SAlexandre Bounine rio_mport_read_config_32(port, destid, hopcount, 659e5cabeb3SAlexandre Bounine from, ®_val); 660e5cabeb3SAlexandre Bounine return RIO_GET_BLOCK_ID(reg_val); 661e5cabeb3SAlexandre Bounine } 662e5cabeb3SAlexandre Bounine } 663e5cabeb3SAlexandre Bounine 664e5cabeb3SAlexandre Bounine /** 665394b701cSMatt Porter * rio_mport_get_feature - query for devices' extended features 666394b701cSMatt Porter * @port: Master port to issue transaction 667394b701cSMatt Porter * @local: Indicate a local master port or remote device access 668394b701cSMatt Porter * @destid: Destination ID of the device 669394b701cSMatt Porter * @hopcount: Number of switch hops to the device 670394b701cSMatt Porter * @ftr: Extended feature code 671394b701cSMatt Porter * 672394b701cSMatt Porter * Tell if a device supports a given RapidIO capability. 673394b701cSMatt Porter * Returns the offset of the requested extended feature 674394b701cSMatt Porter * block within the device's RIO configuration space or 675394b701cSMatt Porter * 0 in case the device does not support it. Possible 676394b701cSMatt Porter * values for @ftr: 677394b701cSMatt Porter * 678394b701cSMatt Porter * %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices 679394b701cSMatt Porter * 680394b701cSMatt Porter * %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices 681394b701cSMatt Porter * 682394b701cSMatt Porter * %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices 683394b701cSMatt Porter * 684394b701cSMatt Porter * %RIO_EFB_SER_EP_ID LP/Serial EP Devices 685394b701cSMatt Porter * 686394b701cSMatt Porter * %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices 687394b701cSMatt Porter * 688394b701cSMatt Porter * %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices 689394b701cSMatt Porter */ 690394b701cSMatt Porter u32 691394b701cSMatt Porter rio_mport_get_feature(struct rio_mport * port, int local, u16 destid, 692394b701cSMatt Porter u8 hopcount, int ftr) 693394b701cSMatt Porter { 694394b701cSMatt Porter u32 asm_info, ext_ftr_ptr, ftr_header; 695394b701cSMatt Porter 696394b701cSMatt Porter if (local) 697394b701cSMatt Porter rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info); 698394b701cSMatt Porter else 699394b701cSMatt Porter rio_mport_read_config_32(port, destid, hopcount, 700394b701cSMatt Porter RIO_ASM_INFO_CAR, &asm_info); 701394b701cSMatt Porter 702394b701cSMatt Porter ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK; 703394b701cSMatt Porter 704394b701cSMatt Porter while (ext_ftr_ptr) { 705394b701cSMatt Porter if (local) 706394b701cSMatt Porter rio_local_read_config_32(port, ext_ftr_ptr, 707394b701cSMatt Porter &ftr_header); 708394b701cSMatt Porter else 709394b701cSMatt Porter rio_mport_read_config_32(port, destid, hopcount, 710394b701cSMatt Porter ext_ftr_ptr, &ftr_header); 711394b701cSMatt Porter if (RIO_GET_BLOCK_ID(ftr_header) == ftr) 712394b701cSMatt Porter return ext_ftr_ptr; 713394b701cSMatt Porter if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header))) 714394b701cSMatt Porter break; 715394b701cSMatt Porter } 716394b701cSMatt Porter 717394b701cSMatt Porter return 0; 718394b701cSMatt Porter } 719394b701cSMatt Porter 720394b701cSMatt Porter /** 721394b701cSMatt Porter * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did 722394b701cSMatt Porter * @vid: RIO vid to match or %RIO_ANY_ID to match all vids 723394b701cSMatt Porter * @did: RIO did to match or %RIO_ANY_ID to match all dids 724394b701cSMatt Porter * @asm_vid: RIO asm_vid to match or %RIO_ANY_ID to match all asm_vids 725394b701cSMatt Porter * @asm_did: RIO asm_did to match or %RIO_ANY_ID to match all asm_dids 726394b701cSMatt Porter * @from: Previous RIO device found in search, or %NULL for new search 727394b701cSMatt Porter * 728394b701cSMatt Porter * Iterates through the list of known RIO devices. If a RIO device is 729394b701cSMatt Porter * found with a matching @vid, @did, @asm_vid, @asm_did, the reference 730394b701cSMatt Porter * count to the device is incrememted and a pointer to its device 731394b701cSMatt Porter * structure is returned. Otherwise, %NULL is returned. A new search 732394b701cSMatt Porter * is initiated by passing %NULL to the @from argument. Otherwise, if 733394b701cSMatt Porter * @from is not %NULL, searches continue from next device on the global 734394b701cSMatt Porter * list. The reference count for @from is always decremented if it is 735394b701cSMatt Porter * not %NULL. 736394b701cSMatt Porter */ 737394b701cSMatt Porter struct rio_dev *rio_get_asm(u16 vid, u16 did, 738394b701cSMatt Porter u16 asm_vid, u16 asm_did, struct rio_dev *from) 739394b701cSMatt Porter { 740394b701cSMatt Porter struct list_head *n; 741394b701cSMatt Porter struct rio_dev *rdev; 742394b701cSMatt Porter 743394b701cSMatt Porter WARN_ON(in_interrupt()); 744394b701cSMatt Porter spin_lock(&rio_global_list_lock); 745394b701cSMatt Porter n = from ? from->global_list.next : rio_devices.next; 746394b701cSMatt Porter 747394b701cSMatt Porter while (n && (n != &rio_devices)) { 748394b701cSMatt Porter rdev = rio_dev_g(n); 749394b701cSMatt Porter if ((vid == RIO_ANY_ID || rdev->vid == vid) && 750394b701cSMatt Porter (did == RIO_ANY_ID || rdev->did == did) && 751394b701cSMatt Porter (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) && 752394b701cSMatt Porter (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did)) 753394b701cSMatt Porter goto exit; 754394b701cSMatt Porter n = n->next; 755394b701cSMatt Porter } 756394b701cSMatt Porter rdev = NULL; 757394b701cSMatt Porter exit: 758394b701cSMatt Porter rio_dev_put(from); 759394b701cSMatt Porter rdev = rio_dev_get(rdev); 760394b701cSMatt Porter spin_unlock(&rio_global_list_lock); 761394b701cSMatt Porter return rdev; 762394b701cSMatt Porter } 763394b701cSMatt Porter 764394b701cSMatt Porter /** 765394b701cSMatt Porter * rio_get_device - Begin or continue searching for a RIO device by vid/did 766394b701cSMatt Porter * @vid: RIO vid to match or %RIO_ANY_ID to match all vids 767394b701cSMatt Porter * @did: RIO did to match or %RIO_ANY_ID to match all dids 768394b701cSMatt Porter * @from: Previous RIO device found in search, or %NULL for new search 769394b701cSMatt Porter * 770394b701cSMatt Porter * Iterates through the list of known RIO devices. If a RIO device is 771394b701cSMatt Porter * found with a matching @vid and @did, the reference count to the 772394b701cSMatt Porter * device is incrememted and a pointer to its device structure is returned. 773394b701cSMatt Porter * Otherwise, %NULL is returned. A new search is initiated by passing %NULL 774394b701cSMatt Porter * to the @from argument. Otherwise, if @from is not %NULL, searches 775394b701cSMatt Porter * continue from next device on the global list. The reference count for 776394b701cSMatt Porter * @from is always decremented if it is not %NULL. 777394b701cSMatt Porter */ 778394b701cSMatt Porter struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from) 779394b701cSMatt Porter { 780394b701cSMatt Porter return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from); 781394b701cSMatt Porter } 782394b701cSMatt Porter 78307590ff0SAlexandre Bounine /** 78407590ff0SAlexandre Bounine * rio_std_route_add_entry - Add switch route table entry using standard 78507590ff0SAlexandre Bounine * registers defined in RIO specification rev.1.3 78607590ff0SAlexandre Bounine * @mport: Master port to issue transaction 78707590ff0SAlexandre Bounine * @destid: Destination ID of the device 78807590ff0SAlexandre Bounine * @hopcount: Number of switch hops to the device 78907590ff0SAlexandre Bounine * @table: routing table ID (global or port-specific) 79007590ff0SAlexandre Bounine * @route_destid: destID entry in the RT 79107590ff0SAlexandre Bounine * @route_port: destination port for specified destID 79207590ff0SAlexandre Bounine */ 79307590ff0SAlexandre Bounine int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, 79407590ff0SAlexandre Bounine u16 table, u16 route_destid, u8 route_port) 79507590ff0SAlexandre Bounine { 79607590ff0SAlexandre Bounine if (table == RIO_GLOBAL_TABLE) { 79707590ff0SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 79807590ff0SAlexandre Bounine RIO_STD_RTE_CONF_DESTID_SEL_CSR, 79907590ff0SAlexandre Bounine (u32)route_destid); 80007590ff0SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 80107590ff0SAlexandre Bounine RIO_STD_RTE_CONF_PORT_SEL_CSR, 80207590ff0SAlexandre Bounine (u32)route_port); 80307590ff0SAlexandre Bounine } 804e5cabeb3SAlexandre Bounine 80507590ff0SAlexandre Bounine udelay(10); 80607590ff0SAlexandre Bounine return 0; 80707590ff0SAlexandre Bounine } 80807590ff0SAlexandre Bounine 80907590ff0SAlexandre Bounine /** 81007590ff0SAlexandre Bounine * rio_std_route_get_entry - Read switch route table entry (port number) 81107590ff0SAlexandre Bounine * assosiated with specified destID using standard registers defined in RIO 81207590ff0SAlexandre Bounine * specification rev.1.3 81307590ff0SAlexandre Bounine * @mport: Master port to issue transaction 81407590ff0SAlexandre Bounine * @destid: Destination ID of the device 81507590ff0SAlexandre Bounine * @hopcount: Number of switch hops to the device 81607590ff0SAlexandre Bounine * @table: routing table ID (global or port-specific) 81707590ff0SAlexandre Bounine * @route_destid: destID entry in the RT 81807590ff0SAlexandre Bounine * @route_port: returned destination port for specified destID 81907590ff0SAlexandre Bounine */ 82007590ff0SAlexandre Bounine int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, 82107590ff0SAlexandre Bounine u16 table, u16 route_destid, u8 *route_port) 82207590ff0SAlexandre Bounine { 82307590ff0SAlexandre Bounine u32 result; 82407590ff0SAlexandre Bounine 82507590ff0SAlexandre Bounine if (table == RIO_GLOBAL_TABLE) { 82607590ff0SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 82707590ff0SAlexandre Bounine RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); 82807590ff0SAlexandre Bounine rio_mport_read_config_32(mport, destid, hopcount, 82907590ff0SAlexandre Bounine RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); 83007590ff0SAlexandre Bounine 83107590ff0SAlexandre Bounine *route_port = (u8)result; 83207590ff0SAlexandre Bounine } 83307590ff0SAlexandre Bounine 83407590ff0SAlexandre Bounine return 0; 83507590ff0SAlexandre Bounine } 83607590ff0SAlexandre Bounine 83707590ff0SAlexandre Bounine /** 83807590ff0SAlexandre Bounine * rio_std_route_clr_table - Clear swotch route table using standard registers 83907590ff0SAlexandre Bounine * defined in RIO specification rev.1.3. 84007590ff0SAlexandre Bounine * @mport: Master port to issue transaction 84107590ff0SAlexandre Bounine * @destid: Destination ID of the device 84207590ff0SAlexandre Bounine * @hopcount: Number of switch hops to the device 84307590ff0SAlexandre Bounine * @table: routing table ID (global or port-specific) 84407590ff0SAlexandre Bounine */ 84507590ff0SAlexandre Bounine int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, 84607590ff0SAlexandre Bounine u16 table) 84707590ff0SAlexandre Bounine { 84807590ff0SAlexandre Bounine u32 max_destid = 0xff; 84907590ff0SAlexandre Bounine u32 i, pef, id_inc = 1, ext_cfg = 0; 85007590ff0SAlexandre Bounine u32 port_sel = RIO_INVALID_ROUTE; 85107590ff0SAlexandre Bounine 85207590ff0SAlexandre Bounine if (table == RIO_GLOBAL_TABLE) { 85307590ff0SAlexandre Bounine rio_mport_read_config_32(mport, destid, hopcount, 85407590ff0SAlexandre Bounine RIO_PEF_CAR, &pef); 85507590ff0SAlexandre Bounine 85607590ff0SAlexandre Bounine if (mport->sys_size) { 85707590ff0SAlexandre Bounine rio_mport_read_config_32(mport, destid, hopcount, 85807590ff0SAlexandre Bounine RIO_SWITCH_RT_LIMIT, 85907590ff0SAlexandre Bounine &max_destid); 86007590ff0SAlexandre Bounine max_destid &= RIO_RT_MAX_DESTID; 86107590ff0SAlexandre Bounine } 86207590ff0SAlexandre Bounine 86307590ff0SAlexandre Bounine if (pef & RIO_PEF_EXT_RT) { 86407590ff0SAlexandre Bounine ext_cfg = 0x80000000; 86507590ff0SAlexandre Bounine id_inc = 4; 86607590ff0SAlexandre Bounine port_sel = (RIO_INVALID_ROUTE << 24) | 86707590ff0SAlexandre Bounine (RIO_INVALID_ROUTE << 16) | 86807590ff0SAlexandre Bounine (RIO_INVALID_ROUTE << 8) | 86907590ff0SAlexandre Bounine RIO_INVALID_ROUTE; 87007590ff0SAlexandre Bounine } 87107590ff0SAlexandre Bounine 87207590ff0SAlexandre Bounine for (i = 0; i <= max_destid;) { 87307590ff0SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 87407590ff0SAlexandre Bounine RIO_STD_RTE_CONF_DESTID_SEL_CSR, 87507590ff0SAlexandre Bounine ext_cfg | i); 87607590ff0SAlexandre Bounine rio_mport_write_config_32(mport, destid, hopcount, 87707590ff0SAlexandre Bounine RIO_STD_RTE_CONF_PORT_SEL_CSR, 87807590ff0SAlexandre Bounine port_sel); 87907590ff0SAlexandre Bounine i += id_inc; 88007590ff0SAlexandre Bounine } 88107590ff0SAlexandre Bounine } 88207590ff0SAlexandre Bounine 88307590ff0SAlexandre Bounine udelay(10); 88407590ff0SAlexandre Bounine return 0; 88507590ff0SAlexandre Bounine } 88607590ff0SAlexandre Bounine 887394b701cSMatt Porter static void rio_fixup_device(struct rio_dev *dev) 888394b701cSMatt Porter { 889394b701cSMatt Porter } 890394b701cSMatt Porter 891394b701cSMatt Porter static int __devinit rio_init(void) 892394b701cSMatt Porter { 893394b701cSMatt Porter struct rio_dev *dev = NULL; 894394b701cSMatt Porter 895394b701cSMatt Porter while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) { 896394b701cSMatt Porter rio_fixup_device(dev); 897394b701cSMatt Porter } 898394b701cSMatt Porter return 0; 899394b701cSMatt Porter } 900394b701cSMatt Porter 901394b701cSMatt Porter device_initcall(rio_init); 902394b701cSMatt Porter 90337d33d15SAl Viro int __devinit rio_init_mports(void) 904394b701cSMatt Porter { 905394b701cSMatt Porter int rc = 0; 906394b701cSMatt Porter struct rio_mport *port; 907394b701cSMatt Porter 908394b701cSMatt Porter list_for_each_entry(port, &rio_mports, node) { 909394b701cSMatt Porter if (!request_mem_region(port->iores.start, 910394b701cSMatt Porter port->iores.end - port->iores.start, 911394b701cSMatt Porter port->name)) { 912394b701cSMatt Porter printk(KERN_ERR 9135febf1cdSKumar Gala "RIO: Error requesting master port region 0x%016llx-0x%016llx\n", 9145febf1cdSKumar Gala (u64)port->iores.start, (u64)port->iores.end - 1); 915394b701cSMatt Porter rc = -ENOMEM; 916394b701cSMatt Porter goto out; 917394b701cSMatt Porter } 918394b701cSMatt Porter 919394b701cSMatt Porter if (port->host_deviceid >= 0) 920394b701cSMatt Porter rio_enum_mport(port); 921394b701cSMatt Porter else 922394b701cSMatt Porter rio_disc_mport(port); 923394b701cSMatt Porter } 924394b701cSMatt Porter 925394b701cSMatt Porter out: 926394b701cSMatt Porter return rc; 927394b701cSMatt Porter } 928394b701cSMatt Porter 929394b701cSMatt Porter void rio_register_mport(struct rio_mport *port) 930394b701cSMatt Porter { 931394b701cSMatt Porter list_add_tail(&port->node, &rio_mports); 932394b701cSMatt Porter } 933394b701cSMatt Porter 934394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_local_get_device_id); 935394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_get_device); 936394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_get_asm); 937394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_request_inb_dbell); 938394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_release_inb_dbell); 939394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_request_outb_dbell); 940394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_release_outb_dbell); 941394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_request_inb_mbox); 942394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_release_inb_mbox); 943394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_request_outb_mbox); 944394b701cSMatt Porter EXPORT_SYMBOL_GPL(rio_release_outb_mbox); 945