1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef _LINUX_PCI_H_
31 #define _LINUX_PCI_H_
32
33 #define CONFIG_PCI_MSI
34
35 #include <linux/types.h>
36
37 #include <sys/param.h>
38 #include <sys/bus.h>
39 #include <sys/pciio.h>
40 #include <sys/rman.h>
41 #include <dev/pci/pcivar.h>
42 #include <dev/pci/pcireg.h>
43 #include <dev/pci/pci_private.h>
44
45 #include <machine/resource.h>
46
47 #include <linux/list.h>
48 #include <linux/dmapool.h>
49 #include <linux/dma-mapping.h>
50 #include <linux/compiler.h>
51 #include <linux/errno.h>
52 #include <asm/atomic.h>
53 #include <linux/device.h>
54
55 struct pci_device_id {
56 uint32_t vendor;
57 uint32_t device;
58 uint32_t subvendor;
59 uint32_t subdevice;
60 uint32_t class_mask;
61 uintptr_t driver_data;
62 };
63
64 #define MODULE_DEVICE_TABLE(bus, table)
65 #define PCI_ANY_ID (-1)
66 #define PCI_VENDOR_ID_MELLANOX 0x15b3
67 #define PCI_VENDOR_ID_TOPSPIN 0x1867
68 #define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44
69 #define PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE 0x5a46
70 #define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278
71 #define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282
72 #define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c
73 #define PCI_DEVICE_ID_MELLANOX_SINAI 0x6274
74
75 #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
76 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
77 #define PCI_FUNC(devfn) ((devfn) & 0x07)
78
79 #define PCI_VDEVICE(_vendor, _device) \
80 .vendor = PCI_VENDOR_ID_##_vendor, .device = (_device), \
81 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
82 #define PCI_DEVICE(_vendor, _device) \
83 .vendor = (_vendor), .device = (_device), \
84 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
85
86 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
87
88 #define PCI_VENDOR_ID PCIR_DEVVENDOR
89 #define PCI_COMMAND PCIR_COMMAND
90 #define PCI_EXP_DEVCTL PCIER_DEVICE_CTL /* Device Control */
91 #define PCI_EXP_LNKCTL PCIER_LINK_CTL /* Link Control */
92 #define PCI_EXP_FLAGS_TYPE PCIEM_FLAGS_TYPE /* Device/Port type */
93 #define PCI_EXP_DEVCAP PCIER_DEVICE_CAP /* Device capabilities */
94 #define PCI_EXP_DEVSTA PCIER_DEVICE_STA /* Device Status */
95 #define PCI_EXP_LNKCAP PCIER_LINK_CAP /* Link Capabilities */
96 #define PCI_EXP_LNKSTA PCIER_LINK_STA /* Link Status */
97 #define PCI_EXP_SLTCAP PCIER_SLOT_CAP /* Slot Capabilities */
98 #define PCI_EXP_SLTCTL PCIER_SLOT_CTL /* Slot Control */
99 #define PCI_EXP_SLTSTA PCIER_SLOT_STA /* Slot Status */
100 #define PCI_EXP_RTCTL PCIER_ROOT_CTL /* Root Control */
101 #define PCI_EXP_RTCAP PCIER_ROOT_CAP /* Root Capabilities */
102 #define PCI_EXP_RTSTA PCIER_ROOT_STA /* Root Status */
103 #define PCI_EXP_DEVCAP2 PCIER_DEVICE_CAP2 /* Device Capabilities 2 */
104 #define PCI_EXP_DEVCTL2 PCIER_DEVICE_CTL2 /* Device Control 2 */
105 #define PCI_EXP_LNKCAP2 PCIER_LINK_CAP2 /* Link Capabilities 2 */
106 #define PCI_EXP_LNKCTL2 PCIER_LINK_CTL2 /* Link Control 2 */
107 #define PCI_EXP_LNKSTA2 PCIER_LINK_STA2 /* Link Status 2 */
108 #define PCI_EXP_FLAGS PCIER_FLAGS /* Capabilities register */
109 #define PCI_EXP_FLAGS_VERS PCIEM_FLAGS_VERSION /* Capability version */
110 #define PCI_EXP_TYPE_ROOT_PORT PCIEM_TYPE_ROOT_PORT /* Root Port */
111 #define PCI_EXP_TYPE_ENDPOINT PCIEM_TYPE_ENDPOINT /* Express Endpoint */
112 #define PCI_EXP_TYPE_LEG_END PCIEM_TYPE_LEGACY_ENDPOINT /* Legacy Endpoint */
113 #define PCI_EXP_TYPE_DOWNSTREAM PCIEM_TYPE_DOWNSTREAM_PORT /* Downstream Port */
114 #define PCI_EXP_FLAGS_SLOT PCIEM_FLAGS_SLOT /* Slot implemented */
115 #define PCI_EXP_TYPE_RC_EC PCIEM_TYPE_ROOT_EC /* Root Complex Event Collector */
116
117
118 #define IORESOURCE_MEM (1 << SYS_RES_MEMORY)
119 #define IORESOURCE_IO (1 << SYS_RES_IOPORT)
120 #define IORESOURCE_IRQ (1 << SYS_RES_IRQ)
121
122 struct pci_dev;
123
124
125 struct pci_driver {
126 struct list_head links;
127 char *name;
128 const struct pci_device_id *id_table;
129 int (*probe)(struct pci_dev *dev, const struct pci_device_id *id);
130 void (*remove)(struct pci_dev *dev);
131 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
132 int (*resume) (struct pci_dev *dev); /* Device woken up */
133 driver_t driver;
134 devclass_t bsdclass;
135 const struct pci_error_handlers *err_handler;
136 };
137
138 extern struct list_head pci_drivers;
139 extern struct list_head pci_devices;
140 extern spinlock_t pci_lock;
141
142 #define __devexit_p(x) x
143
144 struct pci_dev {
145 struct device dev;
146 struct list_head links;
147 struct pci_driver *pdrv;
148 uint64_t dma_mask;
149 uint16_t device;
150 uint16_t vendor;
151 unsigned int irq;
152 unsigned int devfn;
153 u8 revision;
154 };
155
156 static inline struct resource_list_entry *
_pci_get_rle(struct pci_dev * pdev,int type,int rid)157 _pci_get_rle(struct pci_dev *pdev, int type, int rid)
158 {
159 struct pci_devinfo *dinfo;
160 struct resource_list *rl;
161
162 dinfo = device_get_ivars(pdev->dev.bsddev);
163 rl = &dinfo->resources;
164 return resource_list_find(rl, type, rid);
165 }
166
167 static inline struct resource_list_entry *
_pci_get_bar(struct pci_dev * pdev,int bar)168 _pci_get_bar(struct pci_dev *pdev, int bar)
169 {
170 struct resource_list_entry *rle;
171
172 bar = PCIR_BAR(bar);
173 if ((rle = _pci_get_rle(pdev, SYS_RES_MEMORY, bar)) == NULL)
174 rle = _pci_get_rle(pdev, SYS_RES_IOPORT, bar);
175 return (rle);
176 }
177
178 static inline struct device *
_pci_find_irq_dev(unsigned int irq)179 _pci_find_irq_dev(unsigned int irq)
180 {
181 struct pci_dev *pdev;
182
183 spin_lock(&pci_lock);
184 list_for_each_entry(pdev, &pci_devices, links) {
185 if (irq == pdev->dev.irq)
186 break;
187 if (irq >= pdev->dev.msix && irq < pdev->dev.msix_max)
188 break;
189 }
190 spin_unlock(&pci_lock);
191 if (pdev)
192 return &pdev->dev;
193 return (NULL);
194 }
195
196 static inline unsigned long
pci_resource_start(struct pci_dev * pdev,int bar)197 pci_resource_start(struct pci_dev *pdev, int bar)
198 {
199 struct resource_list_entry *rle;
200
201 if ((rle = _pci_get_bar(pdev, bar)) == NULL)
202 return (0);
203 return rle->start;
204 }
205
206 static inline unsigned long
pci_resource_len(struct pci_dev * pdev,int bar)207 pci_resource_len(struct pci_dev *pdev, int bar)
208 {
209 struct resource_list_entry *rle;
210
211 if ((rle = _pci_get_bar(pdev, bar)) == NULL)
212 return (0);
213 return rle->count;
214 }
215
216 static inline int
pci_resource_type(struct pci_dev * pdev,int bar)217 pci_resource_type(struct pci_dev *pdev, int bar)
218 {
219 struct pci_map *pm;
220
221 pm = pci_find_bar(pdev->dev.bsddev, PCIR_BAR(bar));
222 if (!pm)
223 return (-1);
224
225 if (PCI_BAR_IO(pm->pm_value))
226 return (SYS_RES_IOPORT);
227 else
228 return (SYS_RES_MEMORY);
229 }
230
231 /*
232 * All drivers just seem to want to inspect the type not flags.
233 */
234 static inline int
pci_resource_flags(struct pci_dev * pdev,int bar)235 pci_resource_flags(struct pci_dev *pdev, int bar)
236 {
237 int type;
238
239 type = pci_resource_type(pdev, bar);
240 if (type < 0)
241 return (0);
242 return (1 << type);
243 }
244
245 static inline const char *
pci_name(struct pci_dev * d)246 pci_name(struct pci_dev *d)
247 {
248
249 return device_get_desc(d->dev.bsddev);
250 }
251
252 static inline void *
pci_get_drvdata(struct pci_dev * pdev)253 pci_get_drvdata(struct pci_dev *pdev)
254 {
255
256 return dev_get_drvdata(&pdev->dev);
257 }
258
259 static inline void
pci_set_drvdata(struct pci_dev * pdev,void * data)260 pci_set_drvdata(struct pci_dev *pdev, void *data)
261 {
262
263 dev_set_drvdata(&pdev->dev, data);
264 }
265
266 static inline int
pci_enable_device(struct pci_dev * pdev)267 pci_enable_device(struct pci_dev *pdev)
268 {
269
270 pci_enable_io(pdev->dev.bsddev, SYS_RES_IOPORT);
271 pci_enable_io(pdev->dev.bsddev, SYS_RES_MEMORY);
272 return (0);
273 }
274
275 static inline void
pci_disable_device(struct pci_dev * pdev)276 pci_disable_device(struct pci_dev *pdev)
277 {
278 }
279
280 static inline int
pci_set_master(struct pci_dev * pdev)281 pci_set_master(struct pci_dev *pdev)
282 {
283
284 pci_enable_busmaster(pdev->dev.bsddev);
285 return (0);
286 }
287
288 static inline int
pci_clear_master(struct pci_dev * pdev)289 pci_clear_master(struct pci_dev *pdev)
290 {
291
292 pci_disable_busmaster(pdev->dev.bsddev);
293 return (0);
294 }
295
296 static inline int
pci_request_region(struct pci_dev * pdev,int bar,const char * res_name)297 pci_request_region(struct pci_dev *pdev, int bar, const char *res_name)
298 {
299 int rid;
300 int type;
301
302 type = pci_resource_type(pdev, bar);
303 if (type < 0)
304 return (-ENODEV);
305 rid = PCIR_BAR(bar);
306 if (bus_alloc_resource_any(pdev->dev.bsddev, type, &rid,
307 RF_ACTIVE) == NULL)
308 return (-EINVAL);
309 return (0);
310 }
311
312 static inline void
pci_release_region(struct pci_dev * pdev,int bar)313 pci_release_region(struct pci_dev *pdev, int bar)
314 {
315 struct resource_list_entry *rle;
316
317 if ((rle = _pci_get_bar(pdev, bar)) == NULL)
318 return;
319 bus_release_resource(pdev->dev.bsddev, rle->type, rle->rid, rle->res);
320 }
321
322 static inline void
pci_release_regions(struct pci_dev * pdev)323 pci_release_regions(struct pci_dev *pdev)
324 {
325 int i;
326
327 for (i = 0; i <= PCIR_MAX_BAR_0; i++)
328 pci_release_region(pdev, i);
329 }
330
331 static inline int
pci_request_regions(struct pci_dev * pdev,const char * res_name)332 pci_request_regions(struct pci_dev *pdev, const char *res_name)
333 {
334 int error;
335 int i;
336
337 for (i = 0; i <= PCIR_MAX_BAR_0; i++) {
338 error = pci_request_region(pdev, i, res_name);
339 if (error && error != -ENODEV) {
340 pci_release_regions(pdev);
341 return (error);
342 }
343 }
344 return (0);
345 }
346
347 static inline void
pci_disable_msix(struct pci_dev * pdev)348 pci_disable_msix(struct pci_dev *pdev)
349 {
350
351 pci_release_msi(pdev->dev.bsddev);
352
353 /*
354 * The MSIX IRQ numbers associated with this PCI device are no
355 * longer valid and might be re-assigned. Make sure
356 * linux_pci_find_irq_dev() does no longer see them by
357 * resetting their references to zero:
358 */
359 pdev->dev.msix = 0;
360 pdev->dev.msix_max = 0;
361 }
362
363 #define PCI_CAP_ID_EXP PCIY_EXPRESS
364 #define PCI_CAP_ID_PCIX PCIY_PCIX
365
366
367 static inline int
pci_find_capability(struct pci_dev * pdev,int capid)368 pci_find_capability(struct pci_dev *pdev, int capid)
369 {
370 int reg;
371
372 if (pci_find_cap(pdev->dev.bsddev, capid, ®))
373 return (0);
374 return (reg);
375 }
376
377
378
379
380 /**
381 * pci_pcie_cap - get the saved PCIe capability offset
382 * @dev: PCI device
383 *
384 * PCIe capability offset is calculated at PCI device initialization
385 * time and saved in the data structure. This function returns saved
386 * PCIe capability offset. Using this instead of pci_find_capability()
387 * reduces unnecessary search in the PCI configuration space. If you
388 * need to calculate PCIe capability offset from raw device for some
389 * reasons, please use pci_find_capability() instead.
390 */
pci_pcie_cap(struct pci_dev * dev)391 static inline int pci_pcie_cap(struct pci_dev *dev)
392 {
393 return pci_find_capability(dev, PCI_CAP_ID_EXP);
394 }
395
396
397 static inline int
pci_read_config_byte(struct pci_dev * pdev,int where,u8 * val)398 pci_read_config_byte(struct pci_dev *pdev, int where, u8 *val)
399 {
400
401 *val = (u8)pci_read_config(pdev->dev.bsddev, where, 1);
402 return (0);
403 }
404
405 static inline int
pci_read_config_word(struct pci_dev * pdev,int where,u16 * val)406 pci_read_config_word(struct pci_dev *pdev, int where, u16 *val)
407 {
408
409 *val = (u16)pci_read_config(pdev->dev.bsddev, where, 2);
410 return (0);
411 }
412
413 static inline int
pci_read_config_dword(struct pci_dev * pdev,int where,u32 * val)414 pci_read_config_dword(struct pci_dev *pdev, int where, u32 *val)
415 {
416
417 *val = (u32)pci_read_config(pdev->dev.bsddev, where, 4);
418 return (0);
419 }
420
421 static inline int
pci_write_config_byte(struct pci_dev * pdev,int where,u8 val)422 pci_write_config_byte(struct pci_dev *pdev, int where, u8 val)
423 {
424
425 pci_write_config(pdev->dev.bsddev, where, val, 1);
426 return (0);
427 }
428
429 static inline int
pci_write_config_word(struct pci_dev * pdev,int where,u16 val)430 pci_write_config_word(struct pci_dev *pdev, int where, u16 val)
431 {
432
433 pci_write_config(pdev->dev.bsddev, where, val, 2);
434 return (0);
435 }
436
437 static inline int
pci_write_config_dword(struct pci_dev * pdev,int where,u32 val)438 pci_write_config_dword(struct pci_dev *pdev, int where, u32 val)
439 {
440
441 pci_write_config(pdev->dev.bsddev, where, val, 4);
442 return (0);
443 }
444
445 static struct pci_driver *
linux_pci_find(device_t dev,const struct pci_device_id ** idp)446 linux_pci_find(device_t dev, const struct pci_device_id **idp)
447 {
448 const struct pci_device_id *id;
449 struct pci_driver *pdrv;
450 uint16_t vendor;
451 uint16_t device;
452
453 vendor = pci_get_vendor(dev);
454 device = pci_get_device(dev);
455
456 spin_lock(&pci_lock);
457 list_for_each_entry(pdrv, &pci_drivers, links) {
458 for (id = pdrv->id_table; id->vendor != 0; id++) {
459 if (vendor == id->vendor && device == id->device) {
460 *idp = id;
461 spin_unlock(&pci_lock);
462 return (pdrv);
463 }
464 }
465 }
466 spin_unlock(&pci_lock);
467 return (NULL);
468 }
469
470 static inline int
linux_pci_probe(device_t dev)471 linux_pci_probe(device_t dev)
472 {
473 const struct pci_device_id *id;
474 struct pci_driver *pdrv;
475
476 if ((pdrv = linux_pci_find(dev, &id)) == NULL)
477 return (ENXIO);
478 if (device_get_driver(dev) != &pdrv->driver)
479 return (ENXIO);
480 device_set_desc(dev, pdrv->name);
481 return (0);
482 }
483
484 static inline int
linux_pci_attach(device_t dev)485 linux_pci_attach(device_t dev)
486 {
487 struct resource_list_entry *rle;
488 struct pci_dev *pdev;
489 struct pci_driver *pdrv;
490 const struct pci_device_id *id;
491 int error;
492
493 pdrv = linux_pci_find(dev, &id);
494 pdev = device_get_softc(dev);
495 pdev->dev.parent = &linux_rootdev;
496 pdev->dev.bsddev = dev;
497 INIT_LIST_HEAD(&pdev->dev.irqents);
498 pdev->device = id->device;
499 pdev->vendor = id->vendor;
500 pdev->dev.dma_mask = &pdev->dma_mask;
501 pdev->pdrv = pdrv;
502 kobject_init(&pdev->dev.kobj, &dev_ktype);
503 kobject_set_name(&pdev->dev.kobj, device_get_nameunit(dev));
504 kobject_add(&pdev->dev.kobj, &linux_rootdev.kobj,
505 kobject_name(&pdev->dev.kobj));
506 rle = _pci_get_rle(pdev, SYS_RES_IRQ, 0);
507 if (rle)
508 pdev->dev.irq = rle->start;
509 else
510 pdev->dev.irq = 0;
511 pdev->irq = pdev->dev.irq;
512 mtx_unlock(&Giant);
513 spin_lock(&pci_lock);
514 list_add(&pdev->links, &pci_devices);
515 spin_unlock(&pci_lock);
516 error = pdrv->probe(pdev, id);
517 mtx_lock(&Giant);
518 if (error) {
519 spin_lock(&pci_lock);
520 list_del(&pdev->links);
521 spin_unlock(&pci_lock);
522 put_device(&pdev->dev);
523 return (-error);
524 }
525 return (0);
526 }
527
528 static inline int
linux_pci_detach(device_t dev)529 linux_pci_detach(device_t dev)
530 {
531 struct pci_dev *pdev;
532
533 pdev = device_get_softc(dev);
534 mtx_unlock(&Giant);
535 pdev->pdrv->remove(pdev);
536 mtx_lock(&Giant);
537 spin_lock(&pci_lock);
538 list_del(&pdev->links);
539 spin_unlock(&pci_lock);
540 put_device(&pdev->dev);
541
542 return (0);
543 }
544
545 static device_method_t pci_methods[] = {
546 DEVMETHOD(device_probe, linux_pci_probe),
547 DEVMETHOD(device_attach, linux_pci_attach),
548 DEVMETHOD(device_detach, linux_pci_detach),
549 {0, 0}
550 };
551
552 static inline int
pci_register_driver(struct pci_driver * pdrv)553 pci_register_driver(struct pci_driver *pdrv)
554 {
555 devclass_t bus;
556 int error;
557
558 spin_lock(&pci_lock);
559 list_add(&pdrv->links, &pci_drivers);
560 spin_unlock(&pci_lock);
561 bus = devclass_find("pci");
562 pdrv->driver.name = pdrv->name;
563 pdrv->driver.methods = pci_methods;
564 pdrv->driver.size = sizeof(struct pci_dev);
565 mtx_lock(&Giant);
566 error = devclass_add_driver(bus, &pdrv->driver, BUS_PASS_DEFAULT,
567 &pdrv->bsdclass);
568 mtx_unlock(&Giant);
569 if (error)
570 return (-error);
571 return (0);
572 }
573
574 static inline void
pci_unregister_driver(struct pci_driver * pdrv)575 pci_unregister_driver(struct pci_driver *pdrv)
576 {
577 devclass_t bus;
578
579 list_del(&pdrv->links);
580 bus = devclass_find("pci");
581 mtx_lock(&Giant);
582 devclass_delete_driver(bus, &pdrv->driver);
583 mtx_unlock(&Giant);
584 }
585
586 struct msix_entry {
587 int entry;
588 int vector;
589 };
590
591 /*
592 * Enable msix, positive errors indicate actual number of available
593 * vectors. Negative errors are failures.
594 *
595 * NB: define added to prevent this definition of pci_enable_msix from
596 * clashing with the native FreeBSD version.
597 */
598 #define pci_enable_msix linux_pci_enable_msix
599 static inline int
pci_enable_msix(struct pci_dev * pdev,struct msix_entry * entries,int nreq)600 pci_enable_msix(struct pci_dev *pdev, struct msix_entry *entries, int nreq)
601 {
602 struct resource_list_entry *rle;
603 int error;
604 int avail;
605 int i;
606
607 avail = pci_msix_count(pdev->dev.bsddev);
608 if (avail < nreq) {
609 if (avail == 0)
610 return -EINVAL;
611 return avail;
612 }
613 avail = nreq;
614 if ((error = -pci_alloc_msix(pdev->dev.bsddev, &avail)) != 0)
615 return error;
616 /*
617 * Handle case where "pci_alloc_msix()" may allocate less
618 * interrupts than available and return with no error:
619 */
620 if (avail < nreq) {
621 pci_release_msi(pdev->dev.bsddev);
622 return avail;
623 }
624 rle = _pci_get_rle(pdev, SYS_RES_IRQ, 1);
625 pdev->dev.msix = rle->start;
626 pdev->dev.msix_max = rle->start + avail;
627 for (i = 0; i < nreq; i++)
628 entries[i].vector = pdev->dev.msix + i;
629 return (0);
630 }
631
632 #define pci_enable_msix_range linux_pci_enable_msix_range
633 static inline int
pci_enable_msix_range(struct pci_dev * dev,struct msix_entry * entries,int minvec,int maxvec)634 pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
635 int minvec, int maxvec)
636 {
637 int nvec = maxvec;
638 int rc;
639
640 if (maxvec < minvec)
641 return (-ERANGE);
642
643 do {
644 rc = pci_enable_msix(dev, entries, nvec);
645 if (rc < 0) {
646 return (rc);
647 } else if (rc > 0) {
648 if (rc < minvec)
649 return (-ENOSPC);
650 nvec = rc;
651 }
652 } while (rc);
653 return (nvec);
654 }
655
pci_channel_offline(struct pci_dev * pdev)656 static inline int pci_channel_offline(struct pci_dev *pdev)
657 {
658 return false;
659 }
660
pci_enable_sriov(struct pci_dev * dev,int nr_virtfn)661 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
662 {
663 return -ENODEV;
664 }
pci_disable_sriov(struct pci_dev * dev)665 static inline void pci_disable_sriov(struct pci_dev *dev)
666 {
667 }
668
669 /**
670 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
671 * @_table: device table name
672 *
673 * This macro is used to create a struct pci_device_id array (a device table)
674 * in a generic manner.
675 */
676 #define DEFINE_PCI_DEVICE_TABLE(_table) \
677 const struct pci_device_id _table[] __devinitdata
678
679
680 /* XXX This should not be necessary. */
681 #define pcix_set_mmrbc(d, v) 0
682 #define pcix_get_max_mmrbc(d) 0
683 #define pcie_set_readrq(d, v) 0
684
685 #define PCI_DMA_BIDIRECTIONAL 0
686 #define PCI_DMA_TODEVICE 1
687 #define PCI_DMA_FROMDEVICE 2
688 #define PCI_DMA_NONE 3
689
690 #define pci_pool dma_pool
691 #define pci_pool_destroy dma_pool_destroy
692 #define pci_pool_alloc dma_pool_alloc
693 #define pci_pool_free dma_pool_free
694 #define pci_pool_create(_name, _pdev, _size, _align, _alloc) \
695 dma_pool_create(_name, &(_pdev)->dev, _size, _align, _alloc)
696 #define pci_free_consistent(_hwdev, _size, _vaddr, _dma_handle) \
697 dma_free_coherent((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \
698 _size, _vaddr, _dma_handle)
699 #define pci_map_sg(_hwdev, _sg, _nents, _dir) \
700 dma_map_sg((_hwdev) == NULL ? NULL : &(_hwdev->dev), \
701 _sg, _nents, (enum dma_data_direction)_dir)
702 #define pci_map_single(_hwdev, _ptr, _size, _dir) \
703 dma_map_single((_hwdev) == NULL ? NULL : &(_hwdev->dev), \
704 (_ptr), (_size), (enum dma_data_direction)_dir)
705 #define pci_unmap_single(_hwdev, _addr, _size, _dir) \
706 dma_unmap_single((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \
707 _addr, _size, (enum dma_data_direction)_dir)
708 #define pci_unmap_sg(_hwdev, _sg, _nents, _dir) \
709 dma_unmap_sg((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \
710 _sg, _nents, (enum dma_data_direction)_dir)
711 #define pci_map_page(_hwdev, _page, _offset, _size, _dir) \
712 dma_map_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, _page,\
713 _offset, _size, (enum dma_data_direction)_dir)
714 #define pci_unmap_page(_hwdev, _dma_address, _size, _dir) \
715 dma_unmap_page((_hwdev) == NULL ? NULL : &(_hwdev)->dev, \
716 _dma_address, _size, (enum dma_data_direction)_dir)
717 #define pci_set_dma_mask(_pdev, mask) dma_set_mask(&(_pdev)->dev, (mask))
718 #define pci_dma_mapping_error(_pdev, _dma_addr) \
719 dma_mapping_error(&(_pdev)->dev, _dma_addr)
720 #define pci_set_consistent_dma_mask(_pdev, _mask) \
721 dma_set_coherent_mask(&(_pdev)->dev, (_mask))
722 #define DECLARE_PCI_UNMAP_ADDR(x) DEFINE_DMA_UNMAP_ADDR(x);
723 #define DECLARE_PCI_UNMAP_LEN(x) DEFINE_DMA_UNMAP_LEN(x);
724 #define pci_unmap_addr dma_unmap_addr
725 #define pci_unmap_addr_set dma_unmap_addr_set
726 #define pci_unmap_len dma_unmap_len
727 #define pci_unmap_len_set dma_unmap_len_set
728
729 typedef unsigned int __bitwise pci_channel_state_t;
730 typedef unsigned int __bitwise pci_ers_result_t;
731
732 enum pci_channel_state {
733 /* I/O channel is in normal state */
734 pci_channel_io_normal = (__force pci_channel_state_t) 1,
735
736 /* I/O to channel is blocked */
737 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
738
739 /* PCI card is dead */
740 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
741 };
742
743 enum pci_ers_result {
744 /* no result/none/not supported in device driver */
745 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
746
747 /* Device driver can recover without slot reset */
748 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
749
750 /* Device driver wants slot to be reset. */
751 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
752
753 /* Device has completely failed, is unrecoverable */
754 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
755
756 /* Device driver is fully recovered and operational */
757 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
758 };
759
760
761 /* PCI bus error event callbacks */
762 struct pci_error_handlers {
763 /* PCI bus error detected on this device */
764 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
765 enum pci_channel_state error);
766
767 /* MMIO has been re-enabled, but not DMA */
768 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
769
770 /* PCI Express link has been reset */
771 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
772
773 /* PCI slot has been reset */
774 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
775
776 /* Device driver may resume normal operations */
777 void (*resume)(struct pci_dev *dev);
778 };
779
780 /* freeBSD does not support SRIOV - yet */
pci_physfn(struct pci_dev * dev)781 static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
782 {
783 return dev;
784 }
785
pci_is_pcie(struct pci_dev * dev)786 static inline bool pci_is_pcie(struct pci_dev *dev)
787 {
788 return !!pci_pcie_cap(dev);
789 }
790
pcie_flags_reg(struct pci_dev * dev)791 static inline u16 pcie_flags_reg(struct pci_dev *dev)
792 {
793 int pos;
794 u16 reg16;
795
796 pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
797 if (!pos)
798 return 0;
799
800 pci_read_config_word(dev, pos + PCI_EXP_FLAGS, ®16);
801
802 return reg16;
803 }
804
805
pci_pcie_type(struct pci_dev * dev)806 static inline int pci_pcie_type(struct pci_dev *dev)
807 {
808 return (pcie_flags_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
809 }
810
pcie_cap_version(struct pci_dev * dev)811 static inline int pcie_cap_version(struct pci_dev *dev)
812 {
813 return pcie_flags_reg(dev) & PCI_EXP_FLAGS_VERS;
814 }
815
pcie_cap_has_lnkctl(struct pci_dev * dev)816 static inline bool pcie_cap_has_lnkctl(struct pci_dev *dev)
817 {
818 int type = pci_pcie_type(dev);
819
820 return pcie_cap_version(dev) > 1 ||
821 type == PCI_EXP_TYPE_ROOT_PORT ||
822 type == PCI_EXP_TYPE_ENDPOINT ||
823 type == PCI_EXP_TYPE_LEG_END;
824 }
825
pcie_cap_has_devctl(const struct pci_dev * dev)826 static inline bool pcie_cap_has_devctl(const struct pci_dev *dev)
827 {
828 return true;
829 }
830
pcie_cap_has_sltctl(struct pci_dev * dev)831 static inline bool pcie_cap_has_sltctl(struct pci_dev *dev)
832 {
833 int type = pci_pcie_type(dev);
834
835 return pcie_cap_version(dev) > 1 ||
836 type == PCI_EXP_TYPE_ROOT_PORT ||
837 (type == PCI_EXP_TYPE_DOWNSTREAM &&
838 pcie_flags_reg(dev) & PCI_EXP_FLAGS_SLOT);
839 }
840
pcie_cap_has_rtctl(struct pci_dev * dev)841 static inline bool pcie_cap_has_rtctl(struct pci_dev *dev)
842 {
843 int type = pci_pcie_type(dev);
844
845 return pcie_cap_version(dev) > 1 ||
846 type == PCI_EXP_TYPE_ROOT_PORT ||
847 type == PCI_EXP_TYPE_RC_EC;
848 }
849
pcie_capability_reg_implemented(struct pci_dev * dev,int pos)850 static bool pcie_capability_reg_implemented(struct pci_dev *dev, int pos)
851 {
852 if (!pci_is_pcie(dev))
853 return false;
854
855 switch (pos) {
856 case PCI_EXP_FLAGS_TYPE:
857 return true;
858 case PCI_EXP_DEVCAP:
859 case PCI_EXP_DEVCTL:
860 case PCI_EXP_DEVSTA:
861 return pcie_cap_has_devctl(dev);
862 case PCI_EXP_LNKCAP:
863 case PCI_EXP_LNKCTL:
864 case PCI_EXP_LNKSTA:
865 return pcie_cap_has_lnkctl(dev);
866 case PCI_EXP_SLTCAP:
867 case PCI_EXP_SLTCTL:
868 case PCI_EXP_SLTSTA:
869 return pcie_cap_has_sltctl(dev);
870 case PCI_EXP_RTCTL:
871 case PCI_EXP_RTCAP:
872 case PCI_EXP_RTSTA:
873 return pcie_cap_has_rtctl(dev);
874 case PCI_EXP_DEVCAP2:
875 case PCI_EXP_DEVCTL2:
876 case PCI_EXP_LNKCAP2:
877 case PCI_EXP_LNKCTL2:
878 case PCI_EXP_LNKSTA2:
879 return pcie_cap_version(dev) > 1;
880 default:
881 return false;
882 }
883 }
884
885
pcie_capability_write_word(struct pci_dev * dev,int pos,u16 val)886 static inline int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val)
887 {
888 if (pos & 1)
889 return -EINVAL;
890
891 if (!pcie_capability_reg_implemented(dev, pos))
892 return 0;
893
894 return pci_write_config_word(dev, pci_pcie_cap(dev) + pos, val);
895 }
896
897
898 #endif /* _LINUX_PCI_H_ */
899