2 * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * $FreeBSD: src/sys/pci/pci.c,v 1.141.2.15 2002/04/30 17:48:18 tmm Exp $
27 * $DragonFly: src/sys/bus/pci/pci.c,v 1.58 2008/11/16 18:44:00 swildner Exp $
34 #include "opt_compat_oldpci.h"
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/fcntl.h>
42 #include <sys/kernel.h>
43 #include <sys/queue.h>
44 #include <sys/types.h>
45 #include <sys/sysctl.h>
50 #include <vm/vm_extern.h>
54 #include <machine/smp.h>
55 #include "pci_cfgreg.h"
57 #include <sys/pciio.h>
60 #include "pci_private.h"
64 devclass_t pci_devclass;
65 const char *pcib_owner;
67 static void pci_read_capabilities(device_t dev, pcicfgregs *cfg);
68 static int pcie_slotimpl(const pcicfgregs *);
71 u_int32_t devid; /* Vendor/device of the card */
73 #define PCI_QUIRK_MAP_REG 1 /* PCI map register in weird place */
78 struct pci_quirk pci_quirks[] = {
80 * The Intel 82371AB and 82443MX has a map register at offset 0x90.
82 { 0x71138086, PCI_QUIRK_MAP_REG, 0x90, 0 },
83 { 0x719b8086, PCI_QUIRK_MAP_REG, 0x90, 0 },
84 /* As does the Serverworks OSB4 (the SMBus mapping register) */
85 { 0x02001166, PCI_QUIRK_MAP_REG, 0x90, 0 },
90 /* map register information */
91 #define PCI_MAPMEM 0x01 /* memory map */
92 #define PCI_MAPMEMP 0x02 /* prefetchable memory map */
93 #define PCI_MAPPORT 0x04 /* port map */
95 static STAILQ_HEAD(devlist, pci_devinfo) pci_devq;
96 u_int32_t pci_numdevs = 0;
97 static u_int32_t pci_generation = 0;
99 SYSCTL_NODE(_hw, OID_AUTO, pci, CTLFLAG_RD, 0, "pci parameters");
100 static int pci_do_power_nodriver = 0;
101 TUNABLE_INT("hw.pci.do_power_nodriver", &pci_do_power_nodriver);
102 SYSCTL_INT(_hw_pci, OID_AUTO, do_power_nodriver, CTLFLAG_RW,
103 &pci_do_power_nodriver, 0,
104 "Place a function into D3 state when no driver attaches to it. 0 means\n\
105 disable. 1 means conservatively place devices into D3 state. 2 means\n\
106 aggressively place devices into D3 state. 3 means put absolutely everything\n\
110 pci_find_bsf(u_int8_t bus, u_int8_t slot, u_int8_t func)
112 struct pci_devinfo *dinfo;
114 STAILQ_FOREACH(dinfo, &pci_devq, pci_links) {
115 if ((dinfo->cfg.bus == bus) &&
116 (dinfo->cfg.slot == slot) &&
117 (dinfo->cfg.func == func)) {
118 return (dinfo->cfg.dev);
126 pci_find_device(u_int16_t vendor, u_int16_t device)
128 struct pci_devinfo *dinfo;
130 STAILQ_FOREACH(dinfo, &pci_devq, pci_links) {
131 if ((dinfo->cfg.vendor == vendor) &&
132 (dinfo->cfg.device == device)) {
133 return (dinfo->cfg.dev);
141 pcie_slot_implemented(device_t dev)
143 struct pci_devinfo *dinfo = device_get_ivars(dev);
145 return pcie_slotimpl(&dinfo->cfg);
149 pcie_set_max_readrq(device_t dev, uint16_t rqsize)
154 rqsize &= PCIEM_DEVCTL_MAX_READRQ_MASK;
155 if (rqsize > PCIEM_DEVCTL_MAX_READRQ_4096) {
156 panic("%s: invalid max read request size 0x%02x\n",
157 device_get_nameunit(dev), rqsize);
160 expr_ptr = pci_get_pciecap_ptr(dev);
162 panic("%s: not PCIe device\n", device_get_nameunit(dev));
164 val = pci_read_config(dev, expr_ptr + PCIER_DEVCTRL, 2);
165 if ((val & PCIEM_DEVCTL_MAX_READRQ_MASK) != rqsize) {
167 device_printf(dev, "adjust device control 0x%04x", val);
169 val &= ~PCIEM_DEVCTL_MAX_READRQ_MASK;
171 pci_write_config(dev, expr_ptr + PCIER_DEVCTRL, val, 2);
174 kprintf(" -> 0x%04x\n", val);
178 /* return base address of memory or port map */
181 pci_mapbase(unsigned mapreg)
184 if ((mapreg & 0x01) == 0)
186 return (mapreg & ~mask);
189 /* return map type of memory or port map */
192 pci_maptype(unsigned mapreg)
194 static u_int8_t maptype[0x10] = {
195 PCI_MAPMEM, PCI_MAPPORT,
197 PCI_MAPMEM, PCI_MAPPORT,
199 PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
200 PCI_MAPMEM|PCI_MAPMEMP, 0,
201 PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
205 return maptype[mapreg & 0x0f];
208 /* return log2 of map size decoded for memory or port map */
211 pci_mapsize(unsigned testval)
215 testval = pci_mapbase(testval);
218 while ((testval & 1) == 0)
227 /* return log2 of address range supported by map register */
230 pci_maprange(unsigned mapreg)
233 switch (mapreg & 0x07) {
249 /* adjust some values from PCI 1.0 devices to match 2.0 standards ... */
252 pci_fixancient(pcicfgregs *cfg)
254 if (cfg->hdrtype != 0)
257 /* PCI to PCI bridges use header type 1 */
258 if (cfg->baseclass == PCIC_BRIDGE && cfg->subclass == PCIS_BRIDGE_PCI)
262 /* read config data specific to header type 1 device (PCI to PCI bridge) */
265 pci_readppb(device_t pcib, int b, int s, int f)
269 p = kmalloc(sizeof (pcih1cfgregs), M_DEVBUF, M_WAITOK | M_ZERO);
271 p->secstat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECSTAT_1, 2);
272 p->bridgectl = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_BRIDGECTL_1, 2);
274 p->seclat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECLAT_1, 1);
276 p->iobase = PCI_PPBIOBASE (PCIB_READ_CONFIG(pcib, b, s, f,
278 PCIB_READ_CONFIG(pcib, b, s, f,
280 p->iolimit = PCI_PPBIOLIMIT (PCIB_READ_CONFIG(pcib, b, s, f,
282 PCIB_READ_CONFIG(pcib, b, s, f,
283 PCIR_IOLIMITL_1, 1));
285 p->membase = PCI_PPBMEMBASE (0,
286 PCIB_READ_CONFIG(pcib, b, s, f,
288 p->memlimit = PCI_PPBMEMLIMIT (0,
289 PCIB_READ_CONFIG(pcib, b, s, f,
290 PCIR_MEMLIMIT_1, 2));
292 p->pmembase = PCI_PPBMEMBASE (
293 (pci_addr_t)PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMBASEH_1, 4),
294 PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMBASEL_1, 2));
296 p->pmemlimit = PCI_PPBMEMLIMIT (
297 (pci_addr_t)PCIB_READ_CONFIG(pcib, b, s, f,
299 PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMLIMITL_1, 2));
304 /* read config data specific to header type 2 device (PCI to CardBus bridge) */
307 pci_readpcb(device_t pcib, int b, int s, int f)
311 p = kmalloc(sizeof (pcih2cfgregs), M_DEVBUF, M_WAITOK | M_ZERO);
313 p->secstat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECSTAT_2, 2);
314 p->bridgectl = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_BRIDGECTL_2, 2);
316 p->seclat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECLAT_2, 1);
318 p->membase0 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_MEMBASE0_2, 4);
319 p->memlimit0 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_MEMLIMIT0_2, 4);
320 p->membase1 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_MEMBASE1_2, 4);
321 p->memlimit1 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_MEMLIMIT1_2, 4);
323 p->iobase0 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_IOBASE0_2, 4);
324 p->iolimit0 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_IOLIMIT0_2, 4);
325 p->iobase1 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_IOBASE1_2, 4);
326 p->iolimit1 = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_IOLIMIT1_2, 4);
328 p->pccardif = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PCCARDIF_2, 4);
332 /* extract header type specific config data */
335 pci_hdrtypedata(device_t pcib, int b, int s, int f, pcicfgregs *cfg)
337 #define REG(n,w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
338 switch (cfg->hdrtype) {
340 cfg->subvendor = REG(PCIR_SUBVEND_0, 2);
341 cfg->subdevice = REG(PCIR_SUBDEV_0, 2);
342 cfg->nummaps = PCI_MAXMAPS_0;
345 cfg->subvendor = REG(PCIR_SUBVEND_1, 2);
346 cfg->subdevice = REG(PCIR_SUBDEV_1, 2);
347 cfg->secondarybus = REG(PCIR_SECBUS_1, 1);
348 cfg->subordinatebus = REG(PCIR_SUBBUS_1, 1);
349 cfg->nummaps = PCI_MAXMAPS_1;
350 cfg->hdrspec = pci_readppb(pcib, b, s, f);
353 cfg->subvendor = REG(PCIR_SUBVEND_2, 2);
354 cfg->subdevice = REG(PCIR_SUBDEV_2, 2);
355 cfg->secondarybus = REG(PCIR_SECBUS_2, 1);
356 cfg->subordinatebus = REG(PCIR_SUBBUS_2, 1);
357 cfg->nummaps = PCI_MAXMAPS_2;
358 cfg->hdrspec = pci_readpcb(pcib, b, s, f);
364 /* read configuration header into pcicfgrect structure */
367 pci_read_device(device_t pcib, int b, int s, int f, size_t size)
369 #define REG(n, w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
371 pcicfgregs *cfg = NULL;
372 struct pci_devinfo *devlist_entry;
373 struct devlist *devlist_head;
375 devlist_head = &pci_devq;
377 devlist_entry = NULL;
379 if (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_DEVVENDOR, 4) != -1) {
381 devlist_entry = kmalloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
383 cfg = &devlist_entry->cfg;
388 cfg->vendor = REG(PCIR_VENDOR, 2);
389 cfg->device = REG(PCIR_DEVICE, 2);
390 cfg->cmdreg = REG(PCIR_COMMAND, 2);
391 cfg->statreg = REG(PCIR_STATUS, 2);
392 cfg->baseclass = REG(PCIR_CLASS, 1);
393 cfg->subclass = REG(PCIR_SUBCLASS, 1);
394 cfg->progif = REG(PCIR_PROGIF, 1);
395 cfg->revid = REG(PCIR_REVID, 1);
396 cfg->hdrtype = REG(PCIR_HDRTYPE, 1);
397 cfg->cachelnsz = REG(PCIR_CACHELNSZ, 1);
398 cfg->lattimer = REG(PCIR_LATTIMER, 1);
399 cfg->intpin = REG(PCIR_INTPIN, 1);
400 cfg->intline = REG(PCIR_INTLINE, 1);
404 * If using the APIC the intpin is probably wrong, since it
405 * is often setup by the BIOS with the PIC in mind.
407 if (cfg->intpin != 0) {
410 airq = pci_apic_irq(cfg->bus, cfg->slot, cfg->intpin);
412 /* PCI specific entry found in MP table */
413 if (airq != cfg->intline) {
414 undirect_pci_irq(cfg->intline);
419 * PCI interrupts might be redirected to the
420 * ISA bus according to some MP tables. Use the
421 * same methods as used by the ISA devices
422 * devices to find the proper IOAPIC int pin.
424 airq = isa_apic_irq(cfg->intline);
425 if ((airq >= 0) && (airq != cfg->intline)) {
426 /* XXX: undirect_pci_irq() ? */
427 undirect_isa_irq(cfg->intline);
434 cfg->mingnt = REG(PCIR_MINGNT, 1);
435 cfg->maxlat = REG(PCIR_MAXLAT, 1);
437 cfg->mfdev = (cfg->hdrtype & PCIM_MFDEV) != 0;
438 cfg->hdrtype &= ~PCIM_MFDEV;
441 pci_hdrtypedata(pcib, b, s, f, cfg);
442 pci_read_capabilities(pcib, cfg);
444 STAILQ_INSERT_TAIL(devlist_head, devlist_entry, pci_links);
446 devlist_entry->conf.pc_sel.pc_bus = cfg->bus;
447 devlist_entry->conf.pc_sel.pc_dev = cfg->slot;
448 devlist_entry->conf.pc_sel.pc_func = cfg->func;
449 devlist_entry->conf.pc_hdr = cfg->hdrtype;
451 devlist_entry->conf.pc_subvendor = cfg->subvendor;
452 devlist_entry->conf.pc_subdevice = cfg->subdevice;
453 devlist_entry->conf.pc_vendor = cfg->vendor;
454 devlist_entry->conf.pc_device = cfg->device;
456 devlist_entry->conf.pc_class = cfg->baseclass;
457 devlist_entry->conf.pc_subclass = cfg->subclass;
458 devlist_entry->conf.pc_progif = cfg->progif;
459 devlist_entry->conf.pc_revid = cfg->revid;
464 return (devlist_entry);
469 pci_fixup_nextptr(int *nextptr0)
471 int nextptr = *nextptr0;
473 /* "Next pointer" is only one byte */
474 KASSERT(nextptr <= 0xff, ("Illegal next pointer %d\n", nextptr));
478 * PCI local bus spec 3.0:
480 * "... The bottom two bits of all pointers are reserved
481 * and must be implemented as 00b although software must
482 * mask them to allow for future uses of these bits ..."
485 kprintf("Illegal PCI extended capability "
486 "offset, fixup 0x%02x -> 0x%02x\n",
487 nextptr, nextptr & ~0x3);
493 if (nextptr < 0x40) {
495 kprintf("Illegal PCI extended capability "
496 "offset 0x%02x", nextptr);
504 pci_read_cap_pmgt(device_t pcib, int ptr, pcicfgregs *cfg)
507 PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w)
509 struct pcicfg_pmgt *pmgt = &cfg->pmgt;
514 pmgt->pp_cap = REG(ptr + PCIR_POWER_CAP, 2);
515 pmgt->pp_status = ptr + PCIR_POWER_STATUS;
516 pmgt->pp_pmcsr = ptr + PCIR_POWER_PMCSR;
519 * Following way may be used to to test whether
520 * 'data' register exists:
521 * if 'data_select' register of
522 * PCIR_POWER_STATUS(bits[12,9]) is read-only
523 * then 'data' register is _not_ implemented.
531 pcie_slotimpl(const pcicfgregs *cfg)
533 const struct pcicfg_expr *expr = &cfg->expr;
537 * Only version 1 can be parsed currently
539 if ((expr->expr_cap & PCIEM_CAP_VER_MASK) != PCIEM_CAP_VER_1)
543 * - Slot implemented bit is meaningful iff current port is
544 * root port or down stream port.
545 * - Testing for root port or down stream port is meanningful
546 * iff PCI configure has type 1 header.
549 if (cfg->hdrtype != 1)
552 port_type = expr->expr_cap & PCIEM_CAP_PORT_TYPE;
553 if (port_type != PCIE_ROOT_PORT && port_type != PCIE_DOWN_STREAM_PORT)
556 if (!(expr->expr_cap & PCIEM_CAP_SLOT_IMPL))
563 pci_read_cap_expr(device_t pcib, int ptr, pcicfgregs *cfg)
566 PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w)
568 struct pcicfg_expr *expr = &cfg->expr;
570 expr->expr_ptr = ptr;
571 expr->expr_cap = REG(ptr + PCIER_CAPABILITY, 2);
574 * Only version 1 can be parsed currently
576 if ((expr->expr_cap & PCIEM_CAP_VER_MASK) != PCIEM_CAP_VER_1)
580 * Read slot capabilities. Slot capabilities exists iff
581 * current port's slot is implemented
583 if (pcie_slotimpl(cfg))
584 expr->expr_slotcap = REG(ptr + PCIER_SLOTCAP, 4);
590 pci_read_capabilities(device_t pcib, pcicfgregs *cfg)
593 PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w)
597 if ((REG(PCIR_STATUS, 2) & PCIM_STATUS_CAPPRESENT) == 0) {
598 /* No capabilities */
602 switch (cfg->hdrtype) {
605 ptrptr = PCIR_CAP_PTR;
608 ptrptr = PCIR_CAP_PTR_2;
611 return; /* No capabilities support */
613 nextptr = REG(ptrptr, 1);
616 * Read capability entries.
618 while (pci_fixup_nextptr(&nextptr)) {
621 /* Process this entry */
622 switch (REG(ptr, 1)) {
623 case PCIY_PMG: /* PCI power management */
624 pci_read_cap_pmgt(pcib, ptr, cfg);
626 case PCIY_PCIX: /* PCI-X */
627 cfg->pcixcap_ptr = ptr;
629 case PCIY_EXPRESS: /* PCI Express */
630 pci_read_cap_expr(pcib, ptr, cfg);
636 /* Find the next entry */
637 nextptr = REG(ptr + 1, 1);
643 /* free pcicfgregs structure and all depending data structures */
646 pci_freecfg(struct pci_devinfo *dinfo)
648 struct devlist *devlist_head;
650 devlist_head = &pci_devq;
652 if (dinfo->cfg.hdrspec != NULL)
653 kfree(dinfo->cfg.hdrspec, M_DEVBUF);
654 /* XXX this hasn't been tested */
655 STAILQ_REMOVE(devlist_head, dinfo, pci_devinfo, pci_links);
656 kfree(dinfo, M_DEVBUF);
658 /* increment the generation count */
661 /* we're losing one device */
668 * PCI power manangement
671 pci_set_powerstate_method(device_t dev, device_t child, int state)
673 struct pci_devinfo *dinfo = device_get_ivars(child);
674 pcicfgregs *cfg = &dinfo->cfg;
676 int result, oldstate, highest, delay;
678 if (cfg->pmgt.pp_cap == 0)
682 * Optimize a no state change request away. While it would be OK to
683 * write to the hardware in theory, some devices have shown odd
684 * behavior when going from D3 -> D3.
686 oldstate = pci_get_powerstate(child);
687 if (oldstate == state)
691 * The PCI power management specification states that after a state
692 * transition between PCI power states, system software must
693 * guarantee a minimal delay before the function accesses the device.
694 * Compute the worst case delay that we need to guarantee before we
695 * access the device. Many devices will be responsive much more
696 * quickly than this delay, but there are some that don't respond
697 * instantly to state changes. Transitions to/from D3 state require
698 * 10ms, while D2 requires 200us, and D0/1 require none. The delay
699 * is done below with DELAY rather than a sleeper function because
700 * this function can be called from contexts where we cannot sleep.
702 highest = (oldstate > state) ? oldstate : state;
703 if (highest == PCI_POWERSTATE_D3)
705 else if (highest == PCI_POWERSTATE_D2)
709 status = PCI_READ_CONFIG(dev, child, cfg->pmgt.pp_status, 2)
713 case PCI_POWERSTATE_D0:
714 status |= PCIM_PSTAT_D0;
716 case PCI_POWERSTATE_D1:
717 if ((cfg->pmgt.pp_cap & PCIM_PCAP_D1SUPP) == 0)
719 status |= PCIM_PSTAT_D1;
721 case PCI_POWERSTATE_D2:
722 if ((cfg->pmgt.pp_cap & PCIM_PCAP_D2SUPP) == 0)
724 status |= PCIM_PSTAT_D2;
726 case PCI_POWERSTATE_D3:
727 status |= PCIM_PSTAT_D3;
735 "pci%d:%d:%d: Transition from D%d to D%d\n",
736 dinfo->cfg.bus, dinfo->cfg.slot, dinfo->cfg.func,
739 PCI_WRITE_CONFIG(dev, child, cfg->pmgt.pp_status, status, 2);
746 pci_get_powerstate_method(device_t dev, device_t child)
748 struct pci_devinfo *dinfo = device_get_ivars(child);
749 pcicfgregs *cfg = &dinfo->cfg;
753 if (cfg->pmgt.pp_cap != 0) {
754 status = PCI_READ_CONFIG(dev, child, cfg->pmgt.pp_status, 2);
755 switch (status & PCIM_PSTAT_DMASK) {
757 result = PCI_POWERSTATE_D0;
760 result = PCI_POWERSTATE_D1;
763 result = PCI_POWERSTATE_D2;
766 result = PCI_POWERSTATE_D3;
769 result = PCI_POWERSTATE_UNKNOWN;
773 /* No support, device is always at D0 */
774 result = PCI_POWERSTATE_D0;
780 * Some convenience functions for PCI device drivers.
784 pci_set_command_bit(device_t dev, device_t child, u_int16_t bit)
788 command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
790 PCI_WRITE_CONFIG(dev, child, PCIR_COMMAND, command, 2);
794 pci_clear_command_bit(device_t dev, device_t child, u_int16_t bit)
798 command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
800 PCI_WRITE_CONFIG(dev, child, PCIR_COMMAND, command, 2);
804 pci_enable_busmaster_method(device_t dev, device_t child)
806 pci_set_command_bit(dev, child, PCIM_CMD_BUSMASTEREN);
811 pci_disable_busmaster_method(device_t dev, device_t child)
813 pci_clear_command_bit(dev, child, PCIM_CMD_BUSMASTEREN);
818 pci_enable_io_method(device_t dev, device_t child, int space)
829 bit = PCIM_CMD_PORTEN;
833 bit = PCIM_CMD_MEMEN;
839 pci_set_command_bit(dev, child, bit);
840 command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
843 device_printf(child, "failed to enable %s mapping!\n", error);
848 pci_disable_io_method(device_t dev, device_t child, int space)
859 bit = PCIM_CMD_PORTEN;
863 bit = PCIM_CMD_MEMEN;
869 pci_clear_command_bit(dev, child, bit);
870 command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
872 device_printf(child, "failed to disable %s mapping!\n", error);
879 * This is the user interface to PCI configuration space.
883 pci_open(struct dev_open_args *ap)
885 if ((ap->a_oflags & FWRITE) && securelevel > 0) {
892 pci_close(struct dev_close_args *ap)
898 * Match a single pci_conf structure against an array of pci_match_conf
899 * structures. The first argument, 'matches', is an array of num_matches
900 * pci_match_conf structures. match_buf is a pointer to the pci_conf
901 * structure that will be compared to every entry in the matches array.
902 * This function returns 1 on failure, 0 on success.
905 pci_conf_match(struct pci_match_conf *matches, int num_matches,
906 struct pci_conf *match_buf)
910 if ((matches == NULL) || (match_buf == NULL) || (num_matches <= 0))
913 for (i = 0; i < num_matches; i++) {
915 * I'm not sure why someone would do this...but...
917 if (matches[i].flags == PCI_GETCONF_NO_MATCH)
921 * Look at each of the match flags. If it's set, do the
922 * comparison. If the comparison fails, we don't have a
923 * match, go on to the next item if there is one.
925 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS) != 0)
926 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus))
929 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV) != 0)
930 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev))
933 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC) != 0)
934 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func))
937 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR) != 0)
938 && (match_buf->pc_vendor != matches[i].pc_vendor))
941 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE) != 0)
942 && (match_buf->pc_device != matches[i].pc_device))
945 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS) != 0)
946 && (match_buf->pc_class != matches[i].pc_class))
949 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT) != 0)
950 && (match_buf->pd_unit != matches[i].pd_unit))
953 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME) != 0)
954 && (strncmp(matches[i].pd_name, match_buf->pd_name,
955 sizeof(match_buf->pd_name)) != 0))
965 * Locate the parent of a PCI device by scanning the PCI devlist
966 * and return the entry for the parent.
967 * For devices on PCI Bus 0 (the host bus), this is the PCI Host.
968 * For devices on secondary PCI busses, this is that bus' PCI-PCI Bridge.
972 pci_devlist_get_parent(pcicfgregs *cfg)
974 struct devlist *devlist_head;
975 struct pci_devinfo *dinfo;
976 pcicfgregs *bridge_cfg;
979 dinfo = STAILQ_FIRST(devlist_head = &pci_devq);
981 /* If the device is on PCI bus 0, look for the host */
983 for (i = 0; (dinfo != NULL) && (i < pci_numdevs);
984 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) {
985 bridge_cfg = &dinfo->cfg;
986 if (bridge_cfg->baseclass == PCIC_BRIDGE
987 && bridge_cfg->subclass == PCIS_BRIDGE_HOST
988 && bridge_cfg->bus == cfg->bus) {
994 /* If the device is not on PCI bus 0, look for the PCI-PCI bridge */
996 for (i = 0; (dinfo != NULL) && (i < pci_numdevs);
997 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) {
998 bridge_cfg = &dinfo->cfg;
999 if (bridge_cfg->baseclass == PCIC_BRIDGE
1000 && bridge_cfg->subclass == PCIS_BRIDGE_PCI
1001 && bridge_cfg->secondarybus == cfg->bus) {
1011 pci_ioctl(struct dev_ioctl_args *ap)
1018 if (!(ap->a_fflag & FWRITE))
1024 struct pci_devinfo *dinfo;
1025 struct pci_conf_io *cio;
1026 struct devlist *devlist_head;
1027 struct pci_match_conf *pattern_buf;
1032 cio = (struct pci_conf_io *)ap->a_data;
1038 * Hopefully the user won't pass in a null pointer, but it
1039 * can't hurt to check.
1047 * If the user specified an offset into the device list,
1048 * but the list has changed since they last called this
1049 * ioctl, tell them that the list has changed. They will
1050 * have to get the list from the beginning.
1052 if ((cio->offset != 0)
1053 && (cio->generation != pci_generation)){
1054 cio->num_matches = 0;
1055 cio->status = PCI_GETCONF_LIST_CHANGED;
1061 * Check to see whether the user has asked for an offset
1062 * past the end of our list.
1064 if (cio->offset >= pci_numdevs) {
1065 cio->num_matches = 0;
1066 cio->status = PCI_GETCONF_LAST_DEVICE;
1071 /* get the head of the device queue */
1072 devlist_head = &pci_devq;
1075 * Determine how much room we have for pci_conf structures.
1076 * Round the user's buffer size down to the nearest
1077 * multiple of sizeof(struct pci_conf) in case the user
1078 * didn't specify a multiple of that size.
1080 iolen = min(cio->match_buf_len -
1081 (cio->match_buf_len % sizeof(struct pci_conf)),
1082 pci_numdevs * sizeof(struct pci_conf));
1085 * Since we know that iolen is a multiple of the size of
1086 * the pciconf union, it's okay to do this.
1088 ionum = iolen / sizeof(struct pci_conf);
1091 * If this test is true, the user wants the pci_conf
1092 * structures returned to match the supplied entries.
1094 if ((cio->num_patterns > 0)
1095 && (cio->pat_buf_len > 0)) {
1097 * pat_buf_len needs to be:
1098 * num_patterns * sizeof(struct pci_match_conf)
1099 * While it is certainly possible the user just
1100 * allocated a large buffer, but set the number of
1101 * matches correctly, it is far more likely that
1102 * their kernel doesn't match the userland utility
1103 * they're using. It's also possible that the user
1104 * forgot to initialize some variables. Yes, this
1105 * may be overly picky, but I hazard to guess that
1106 * it's far more likely to just catch folks that
1107 * updated their kernel but not their userland.
1109 if ((cio->num_patterns *
1110 sizeof(struct pci_match_conf)) != cio->pat_buf_len){
1111 /* The user made a mistake, return an error*/
1112 cio->status = PCI_GETCONF_ERROR;
1113 kprintf("pci_ioctl: pat_buf_len %d != "
1114 "num_patterns (%d) * sizeof(struct "
1115 "pci_match_conf) (%d)\npci_ioctl: "
1116 "pat_buf_len should be = %d\n",
1117 cio->pat_buf_len, cio->num_patterns,
1118 (int)sizeof(struct pci_match_conf),
1119 (int)sizeof(struct pci_match_conf) *
1121 kprintf("pci_ioctl: do your headers match your "
1123 cio->num_matches = 0;
1129 * Check the user's buffer to make sure it's readable.
1131 if (!useracc((caddr_t)cio->patterns,
1132 cio->pat_buf_len, VM_PROT_READ)) {
1133 kprintf("pci_ioctl: pattern buffer %p, "
1134 "length %u isn't user accessible for"
1135 " READ\n", cio->patterns,
1141 * Allocate a buffer to hold the patterns.
1143 pattern_buf = kmalloc(cio->pat_buf_len, M_TEMP,
1145 error = copyin(cio->patterns, pattern_buf,
1149 num_patterns = cio->num_patterns;
1151 } else if ((cio->num_patterns > 0)
1152 || (cio->pat_buf_len > 0)) {
1154 * The user made a mistake, spit out an error.
1156 cio->status = PCI_GETCONF_ERROR;
1157 cio->num_matches = 0;
1158 kprintf("pci_ioctl: invalid GETCONF arguments\n");
1165 * Make sure we can write to the match buffer.
1167 if (!useracc((caddr_t)cio->matches,
1168 cio->match_buf_len, VM_PROT_WRITE)) {
1169 kprintf("pci_ioctl: match buffer %p, length %u "
1170 "isn't user accessible for WRITE\n",
1171 cio->matches, cio->match_buf_len);
1177 * Go through the list of devices and copy out the devices
1178 * that match the user's criteria.
1180 for (cio->num_matches = 0, error = 0, i = 0,
1181 dinfo = STAILQ_FIRST(devlist_head);
1182 (dinfo != NULL) && (cio->num_matches < ionum)
1183 && (error == 0) && (i < pci_numdevs);
1184 dinfo = STAILQ_NEXT(dinfo, pci_links), i++) {
1186 if (i < cio->offset)
1189 /* Populate pd_name and pd_unit */
1191 if (dinfo->cfg.dev && dinfo->conf.pd_name[0] == '\0')
1192 name = device_get_name(dinfo->cfg.dev);
1194 strncpy(dinfo->conf.pd_name, name,
1195 sizeof(dinfo->conf.pd_name));
1196 dinfo->conf.pd_name[PCI_MAXNAMELEN] = 0;
1197 dinfo->conf.pd_unit =
1198 device_get_unit(dinfo->cfg.dev);
1201 if ((pattern_buf == NULL) ||
1202 (pci_conf_match(pattern_buf, num_patterns,
1203 &dinfo->conf) == 0)) {
1206 * If we've filled up the user's buffer,
1207 * break out at this point. Since we've
1208 * got a match here, we'll pick right back
1209 * up at the matching entry. We can also
1210 * tell the user that there are more matches
1213 if (cio->num_matches >= ionum)
1216 error = copyout(&dinfo->conf,
1217 &cio->matches[cio->num_matches],
1218 sizeof(struct pci_conf));
1224 * Set the pointer into the list, so if the user is getting
1225 * n records at a time, where n < pci_numdevs,
1230 * Set the generation, the user will need this if they make
1231 * another ioctl call with offset != 0.
1233 cio->generation = pci_generation;
1236 * If this is the last device, inform the user so he won't
1237 * bother asking for more devices. If dinfo isn't NULL, we
1238 * know that there are more matches in the list because of
1239 * the way the traversal is done.
1242 cio->status = PCI_GETCONF_LAST_DEVICE;
1244 cio->status = PCI_GETCONF_MORE_DEVS;
1246 if (pattern_buf != NULL)
1247 kfree(pattern_buf, M_TEMP);
1252 io = (struct pci_io *)ap->a_data;
1253 switch(io->pi_width) {
1258 * Assume that the user-level bus number is
1259 * actually the pciN instance number. We map
1260 * from that to the real pcib+bus combination.
1262 pci = devclass_get_device(pci_devclass,
1266 * pci is the pci device and may contain
1267 * several children (for each function code).
1268 * The governing pci bus is the parent to
1273 pcib = device_get_parent(pci);
1274 b = pcib_get_bus(pcib);
1276 PCIB_READ_CONFIG(pcib,
1294 io = (struct pci_io *)ap->a_data;
1295 switch(io->pi_width) {
1300 * Assume that the user-level bus number is
1301 * actually the pciN instance number. We map
1302 * from that to the real pcib+bus combination.
1304 pci = devclass_get_device(pci_devclass,
1308 * pci is the pci device and may contain
1309 * several children (for each function code).
1310 * The governing pci bus is the parent to
1315 pcib = device_get_parent(pci);
1316 b = pcib_get_bus(pcib);
1317 PCIB_WRITE_CONFIG(pcib,
1345 static struct dev_ops pcic_ops = {
1346 { "pci", PCI_CDEV, 0 },
1348 .d_close = pci_close,
1349 .d_ioctl = pci_ioctl,
1355 * New style pci driver. Parent device is either a pci-host-bridge or a
1356 * pci-pci-bridge. Both kinds are represented by instances of pcib.
1359 pci_class_to_string(int baseclass)
1376 case PCIC_MULTIMEDIA:
1377 name = "MULTIMEDIA";
1385 case PCIC_SIMPLECOMM:
1386 name = "SIMPLECOMM";
1388 case PCIC_BASEPERIPH:
1389 name = "BASEPERIPH";
1397 case PCIC_PROCESSOR:
1400 case PCIC_SERIALBUS:
1409 case PCIC_SATELLITE:
1429 pci_print_verbose_expr(const pcicfgregs *cfg)
1431 const struct pcicfg_expr *expr = &cfg->expr;
1432 const char *port_name;
1438 if (expr->expr_ptr == 0) /* No PCI Express capability */
1441 kprintf("\tPCI Express ver.%d cap=0x%04x",
1442 expr->expr_cap & PCIEM_CAP_VER_MASK, expr->expr_cap);
1443 if ((expr->expr_cap & PCIEM_CAP_VER_MASK) != PCIEM_CAP_VER_1)
1446 port_type = expr->expr_cap & PCIEM_CAP_PORT_TYPE;
1448 switch (port_type) {
1449 case PCIE_END_POINT:
1450 port_name = "DEVICE";
1452 case PCIE_LEG_END_POINT:
1453 port_name = "LEGDEV";
1455 case PCIE_ROOT_PORT:
1458 case PCIE_UP_STREAM_PORT:
1459 port_name = "UPSTREAM";
1461 case PCIE_DOWN_STREAM_PORT:
1462 port_name = "DOWNSTRM";
1464 case PCIE_PCIE2PCI_BRIDGE:
1465 port_name = "PCIE2PCI";
1467 case PCIE_PCI2PCIE_BRIDGE:
1468 port_name = "PCI2PCIE";
1474 if ((port_type == PCIE_ROOT_PORT ||
1475 port_type == PCIE_DOWN_STREAM_PORT) &&
1476 !(expr->expr_cap & PCIEM_CAP_SLOT_IMPL))
1478 if (port_name != NULL)
1479 kprintf("[%s]", port_name);
1481 if (pcie_slotimpl(cfg)) {
1482 kprintf(", slotcap=0x%08x", expr->expr_slotcap);
1483 if (expr->expr_slotcap & PCIEM_SLTCAP_HP_CAP)
1484 kprintf("[HOTPLUG]");
1491 pci_print_verbose(struct pci_devinfo *dinfo)
1494 pcicfgregs *cfg = &dinfo->cfg;
1496 kprintf("found->\tvendor=0x%04x, dev=0x%04x, revid=0x%02x\n",
1497 cfg->vendor, cfg->device, cfg->revid);
1498 kprintf("\tbus=%d, slot=%d, func=%d\n",
1499 cfg->bus, cfg->slot, cfg->func);
1500 kprintf("\tclass=[%s]%02x-%02x-%02x, hdrtype=0x%02x, mfdev=%d\n",
1501 pci_class_to_string(cfg->baseclass),
1502 cfg->baseclass, cfg->subclass, cfg->progif,
1503 cfg->hdrtype, cfg->mfdev);
1504 kprintf("\tsubordinatebus=%x \tsecondarybus=%x\n",
1505 cfg->subordinatebus, cfg->secondarybus);
1507 kprintf("\tcmdreg=0x%04x, statreg=0x%04x, cachelnsz=%d (dwords)\n",
1508 cfg->cmdreg, cfg->statreg, cfg->cachelnsz);
1509 kprintf("\tlattimer=0x%02x (%d ns), mingnt=0x%02x (%d ns), maxlat=0x%02x (%d ns)\n",
1510 cfg->lattimer, cfg->lattimer * 30,
1511 cfg->mingnt, cfg->mingnt * 250, cfg->maxlat, cfg->maxlat * 250);
1512 #endif /* PCI_DEBUG */
1513 if (cfg->intpin > 0)
1514 kprintf("\tintpin=%c, irq=%d\n", cfg->intpin +'a' -1, cfg->intline);
1516 pci_print_verbose_expr(cfg);
1521 pci_porten(device_t pcib, int b, int s, int f)
1523 return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
1524 & PCIM_CMD_PORTEN) != 0;
1528 pci_memen(device_t pcib, int b, int s, int f)
1530 return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
1531 & PCIM_CMD_MEMEN) != 0;
1535 * Add a resource based on a pci map register. Return 1 if the map
1536 * register is a 32bit map register or 2 if it is a 64bit register.
1539 pci_add_map(device_t pcib, int b, int s, int f, int reg,
1540 struct resource_list *rl)
1549 #ifdef PCI_ENABLE_IO_MODES
1554 map = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
1556 if (map == 0 || map == 0xffffffff)
1557 return 1; /* skip invalid entry */
1559 PCIB_WRITE_CONFIG(pcib, b, s, f, reg, 0xffffffff, 4);
1560 testval = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
1561 PCIB_WRITE_CONFIG(pcib, b, s, f, reg, map, 4);
1563 base = pci_mapbase(map);
1564 if (pci_maptype(map) & PCI_MAPMEM)
1565 type = SYS_RES_MEMORY;
1567 type = SYS_RES_IOPORT;
1568 ln2size = pci_mapsize(testval);
1569 ln2range = pci_maprange(testval);
1570 if (ln2range == 64) {
1571 /* Read the other half of a 64bit map register */
1572 base |= (u_int64_t) PCIB_READ_CONFIG(pcib, b, s, f, reg+4, 4);
1576 * This code theoretically does the right thing, but has
1577 * undesirable side effects in some cases where
1578 * peripherals respond oddly to having these bits
1579 * enabled. Leave them alone by default.
1581 #ifdef PCI_ENABLE_IO_MODES
1582 if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f)) {
1583 cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
1584 cmd |= PCIM_CMD_PORTEN;
1585 PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
1587 if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f)) {
1588 cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
1589 cmd |= PCIM_CMD_MEMEN;
1590 PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
1593 if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f))
1595 if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f))
1599 resource_list_add(rl, type, reg,
1600 base, base + (1 << ln2size) - 1,
1604 kprintf("\tmap[%02x]: type %x, range %2d, base %08x, size %2d\n",
1605 reg, pci_maptype(base), ln2range,
1606 (unsigned int) base, ln2size);
1609 return (ln2range == 64) ? 2 : 1;
1612 #ifdef PCI_MAP_FIXUP
1614 * For ATA devices we need to decide early on what addressing mode to use.
1615 * Legacy demands that the primary and secondary ATA ports sits on the
1616 * same addresses that old ISA hardware did. This dictates that we use
1617 * those addresses and ignore the BARs if we cannot set PCI native
1621 pci_ata_maps(device_t pcib, device_t bus, device_t dev, int b, int s, int f,
1622 struct resource_list *rl)
1624 int rid, type, progif;
1626 /* if this device supports PCI native addressing use it */
1627 progif = pci_read_config(dev, PCIR_PROGIF, 1);
1628 if ((progif &0x8a) == 0x8a) {
1629 if (pci_mapbase(pci_read_config(dev, PCIR_BAR(0), 4)) &&
1630 pci_mapbase(pci_read_config(dev, PCIR_BAR(2), 4))) {
1631 kprintf("Trying ATA native PCI addressing mode\n");
1632 pci_write_config(dev, PCIR_PROGIF, progif | 0x05, 1);
1637 * Because we return any preallocated resources for lazy
1638 * allocation for PCI devices in pci_alloc_resource(), we can
1639 * allocate our legacy resources here.
1641 progif = pci_read_config(dev, PCIR_PROGIF, 1);
1642 type = SYS_RES_IOPORT;
1643 if (progif & PCIP_STORAGE_IDE_MODEPRIM) {
1644 pci_add_map(pcib, b, s, f, PCIR_BAR(0), rl);
1645 pci_add_map(pcib, b, s, f, PCIR_BAR(1), rl);
1648 resource_list_add(rl, type, rid, 0x1f0, 0x1f7, 8);
1649 resource_list_alloc(rl, bus, dev, type, &rid, 0x1f0, 0x1f7, 8,
1652 resource_list_add(rl, type, rid, 0x3f6, 0x3f6, 1);
1653 resource_list_alloc(rl, bus, dev, type, &rid, 0x3f6, 0x3f6, 1,
1656 if (progif & PCIP_STORAGE_IDE_MODESEC) {
1657 pci_add_map(pcib, b, s, f, PCIR_BAR(2), rl);
1658 pci_add_map(pcib, b, s, f, PCIR_BAR(3), rl);
1661 resource_list_add(rl, type, rid, 0x170, 0x177, 8);
1662 resource_list_alloc(rl, bus, dev, type, &rid, 0x170, 0x177, 8,
1665 resource_list_add(rl, type, rid, 0x376, 0x376, 1);
1666 resource_list_alloc(rl, bus, dev, type, &rid, 0x376, 0x376, 1,
1669 pci_add_map(pcib, b, s, f, PCIR_BAR(4), rl);
1670 pci_add_map(pcib, b, s, f, PCIR_BAR(5), rl);
1672 #endif /* PCI_MAP_FIXUP */
1675 pci_add_resources(device_t pcib, device_t bus, device_t dev)
1677 struct pci_devinfo *dinfo = device_get_ivars(dev);
1678 pcicfgregs *cfg = &dinfo->cfg;
1679 struct resource_list *rl = &dinfo->resources;
1680 struct pci_quirk *q;
1682 #if 0 /* WILL BE USED WITH ADDITIONAL IMPORT FROM FREEBSD-5 XXX */
1689 #ifdef PCI_MAP_FIXUP
1690 /* atapci devices in legacy mode need special map treatment */
1691 if ((pci_get_class(dev) == PCIC_STORAGE) &&
1692 (pci_get_subclass(dev) == PCIS_STORAGE_IDE) &&
1693 ((pci_get_progif(dev) & PCIP_STORAGE_IDE_MASTERDEV) ||
1694 (!pci_read_config(dev, PCIR_BAR(0), 4) &&
1695 !pci_read_config(dev, PCIR_BAR(2), 4))) )
1696 pci_ata_maps(pcib, bus, dev, b, s, f, rl);
1698 #endif /* PCI_MAP_FIXUP */
1699 for (i = 0; i < cfg->nummaps;) {
1700 i += pci_add_map(pcib, b, s, f, PCIR_BAR(i),rl);
1703 for (q = &pci_quirks[0]; q->devid; q++) {
1704 if (q->devid == ((cfg->device << 16) | cfg->vendor)
1705 && q->type == PCI_QUIRK_MAP_REG)
1706 pci_add_map(pcib, b, s, f, q->arg1, rl);
1709 if (cfg->intpin > 0 && cfg->intline != 255)
1710 resource_list_add(rl, SYS_RES_IRQ, 0,
1711 cfg->intline, cfg->intline, 1);
1715 pci_add_children(device_t dev, int busno, size_t dinfo_size)
1717 #define REG(n, w) PCIB_READ_CONFIG(pcib, busno, s, f, n, w)
1718 device_t pcib = device_get_parent(dev);
1719 struct pci_devinfo *dinfo;
1721 int s, f, pcifunchigh;
1724 KKASSERT(dinfo_size >= sizeof(struct pci_devinfo));
1726 maxslots = PCIB_MAXSLOTS(pcib);
1728 for (s = 0; s <= maxslots; s++) {
1731 hdrtype = REG(PCIR_HDRTYPE, 1);
1732 if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
1734 if (hdrtype & PCIM_MFDEV)
1735 pcifunchigh = PCI_FUNCMAX;
1736 for (f = 0; f <= pcifunchigh; f++) {
1737 dinfo = pci_read_device(pcib, busno, s, f, dinfo_size);
1738 if (dinfo != NULL) {
1739 pci_add_child(dev, dinfo);
1747 * The actual PCI child that we add has a NULL driver whos parent
1748 * device will be "pci". The child contains the ivars, not the parent.
1751 pci_add_child(device_t bus, struct pci_devinfo *dinfo)
1755 pcib = device_get_parent(bus);
1756 dinfo->cfg.dev = device_add_child(bus, NULL, -1);
1757 device_set_ivars(dinfo->cfg.dev, dinfo);
1758 pci_cfg_save(dinfo->cfg.dev, dinfo, 0);
1759 pci_cfg_restore(dinfo->cfg.dev, dinfo);
1760 pci_add_resources(pcib, bus, dinfo->cfg.dev);
1761 pci_print_verbose(dinfo);
1765 * Probe the PCI bus. Note: probe code is not supposed to add children
1769 pci_probe(device_t dev)
1771 device_set_desc(dev, "PCI bus");
1773 /* Allow other subclasses to override this driver */
1778 pci_attach(device_t dev)
1781 int lunit = device_get_unit(dev);
1783 dev_ops_add(&pcic_ops, -1, lunit);
1784 make_dev(&pcic_ops, lunit, UID_ROOT, GID_WHEEL, 0644, "pci%d", lunit);
1787 * Since there can be multiple independantly numbered PCI
1788 * busses on some large alpha systems, we can't use the unit
1789 * number to decide what bus we are probing. We ask the parent
1790 * pcib what our bus number is.
1792 * pcib_get_bus() must act on the pci bus device, not on the pci
1793 * device, because it uses badly hacked nexus-based ivars to
1794 * store and retrieve the physical bus number. XXX
1796 busno = pcib_get_bus(device_get_parent(dev));
1798 device_printf(dev, "pci_attach() physical bus=%d\n", busno);
1800 pci_add_children(dev, busno, sizeof(struct pci_devinfo));
1802 return (bus_generic_attach(dev));
1806 pci_print_resources(struct resource_list *rl, const char *name, int type,
1809 struct resource_list_entry *rle;
1810 int printed, retval;
1814 /* Yes, this is kinda cheating */
1815 SLIST_FOREACH(rle, rl, link) {
1816 if (rle->type == type) {
1818 retval += kprintf(" %s ", name);
1819 else if (printed > 0)
1820 retval += kprintf(",");
1822 retval += kprintf(format, rle->start);
1823 if (rle->count > 1) {
1824 retval += kprintf("-");
1825 retval += kprintf(format, rle->start +
1834 pci_print_child(device_t dev, device_t child)
1836 struct pci_devinfo *dinfo;
1837 struct resource_list *rl;
1841 dinfo = device_get_ivars(child);
1843 rl = &dinfo->resources;
1845 retval += bus_print_child_header(dev, child);
1847 retval += pci_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
1848 retval += pci_print_resources(rl, "mem", SYS_RES_MEMORY, "%#lx");
1849 retval += pci_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
1850 if (device_get_flags(dev))
1851 retval += kprintf(" flags %#x", device_get_flags(dev));
1853 retval += kprintf(" at device %d.%d", pci_get_slot(child),
1854 pci_get_function(child));
1856 retval += bus_print_child_footer(dev, child);
1862 pci_probe_nomatch(device_t dev, device_t child)
1864 struct pci_devinfo *dinfo;
1870 dinfo = device_get_ivars(child);
1872 desc = pci_ata_match(child);
1873 if (!desc) desc = pci_usb_match(child);
1874 if (!desc) desc = pci_vga_match(child);
1875 if (!desc) desc = pci_chip_match(child);
1877 desc = "unknown card";
1880 device_printf(dev, "<%s>", desc);
1881 if (bootverbose || unknown) {
1882 kprintf(" (vendor=0x%04x, dev=0x%04x)",
1886 kprintf(" at %d.%d",
1887 pci_get_slot(child),
1888 pci_get_function(child));
1889 if (cfg->intpin > 0 && cfg->intline != 255) {
1890 kprintf(" irq %d", cfg->intline);
1893 pci_cfg_save(child, (struct pci_devinfo *)device_get_ivars(child), 1);
1899 pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
1901 struct pci_devinfo *dinfo;
1904 dinfo = device_get_ivars(child);
1908 case PCI_IVAR_SUBVENDOR:
1909 *result = cfg->subvendor;
1911 case PCI_IVAR_SUBDEVICE:
1912 *result = cfg->subdevice;
1914 case PCI_IVAR_VENDOR:
1915 *result = cfg->vendor;
1917 case PCI_IVAR_DEVICE:
1918 *result = cfg->device;
1920 case PCI_IVAR_DEVID:
1921 *result = (cfg->device << 16) | cfg->vendor;
1923 case PCI_IVAR_CLASS:
1924 *result = cfg->baseclass;
1926 case PCI_IVAR_SUBCLASS:
1927 *result = cfg->subclass;
1929 case PCI_IVAR_PROGIF:
1930 *result = cfg->progif;
1932 case PCI_IVAR_REVID:
1933 *result = cfg->revid;
1935 case PCI_IVAR_INTPIN:
1936 *result = cfg->intpin;
1939 *result = cfg->intline;
1945 *result = cfg->slot;
1947 case PCI_IVAR_FUNCTION:
1948 *result = cfg->func;
1950 case PCI_IVAR_SECONDARYBUS:
1951 *result = cfg->secondarybus;
1953 case PCI_IVAR_SUBORDINATEBUS:
1954 *result = cfg->subordinatebus;
1956 case PCI_IVAR_ETHADDR:
1958 * The generic accessor doesn't deal with failure, so
1959 * we set the return value, then return an error.
1963 case PCI_IVAR_PCIXCAP_PTR:
1964 *result = cfg->pcixcap_ptr;
1966 case PCI_IVAR_PCIECAP_PTR:
1967 *result = cfg->expr.expr_ptr;
1976 pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
1978 struct pci_devinfo *dinfo;
1981 dinfo = device_get_ivars(child);
1985 case PCI_IVAR_SUBVENDOR:
1986 case PCI_IVAR_SUBDEVICE:
1987 case PCI_IVAR_VENDOR:
1988 case PCI_IVAR_DEVICE:
1989 case PCI_IVAR_DEVID:
1990 case PCI_IVAR_CLASS:
1991 case PCI_IVAR_SUBCLASS:
1992 case PCI_IVAR_PROGIF:
1993 case PCI_IVAR_REVID:
1994 case PCI_IVAR_INTPIN:
1998 case PCI_IVAR_FUNCTION:
1999 case PCI_IVAR_ETHADDR:
2000 case PCI_IVAR_PCIXCAP_PTR:
2001 case PCI_IVAR_PCIECAP_PTR:
2002 return EINVAL; /* disallow for now */
2004 case PCI_IVAR_SECONDARYBUS:
2005 cfg->secondarybus = value;
2007 case PCI_IVAR_SUBORDINATEBUS:
2008 cfg->subordinatebus = value;
2016 #ifdef PCI_MAP_FIXUP
2017 static struct resource *
2018 pci_alloc_map(device_t dev, device_t child, int type, int *rid, u_long start,
2019 u_long end, u_long count, u_int flags)
2021 struct pci_devinfo *dinfo = device_get_ivars(child);
2022 struct resource_list *rl = &dinfo->resources;
2023 struct resource_list_entry *rle;
2024 struct resource *res;
2025 uint32_t map, testval;
2029 * Weed out the bogons, and figure out how large the BAR/map
2030 * is. BARs that read back 0 here are bogus and unimplemented.
2032 * Note: atapci in legacy mode are special and handled elsewhere
2033 * in the code. If you have an atapci device in legacy mode and
2034 * it fails here, that other code is broken.
2037 map = pci_read_config(child, *rid, 4);
2038 pci_write_config(child, *rid, 0xffffffff, 4);
2039 testval = pci_read_config(child, *rid, 4);
2040 if (pci_mapbase(testval) == 0)
2042 if (pci_maptype(testval) & PCI_MAPMEM) {
2043 if (type != SYS_RES_MEMORY) {
2045 device_printf(dev, "child %s requested type %d"
2046 " for rid %#x, but the BAR says "
2048 device_get_nameunit(child), type,
2053 if (type != SYS_RES_IOPORT) {
2055 device_printf(dev, "child %s requested type %d"
2056 " for rid %#x, but the BAR says "
2057 "it is an ioport\n",
2058 device_get_nameunit(child), type,
2064 * For real BARs, we need to override the size that
2065 * the driver requests, because that's what the BAR
2066 * actually uses and we would otherwise have a
2067 * situation where we might allocate the excess to
2068 * another driver, which won't work.
2070 mapsize = pci_mapsize(testval);
2071 count = 1 << mapsize;
2072 if (RF_ALIGNMENT(flags) < mapsize)
2073 flags = (flags & ~RF_ALIGNMENT_MASK) |
2074 RF_ALIGNMENT_LOG2(mapsize);
2076 * Allocate enough resource, and then write back the
2077 * appropriate BAR for that resource.
2079 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, type, rid,
2080 start, end, count, flags);
2082 device_printf(child, "%#lx bytes at rid %#x res %d failed "
2083 "(%#lx, %#lx)\n", count, *rid, type, start, end);
2086 resource_list_add(rl, type, *rid, start, end, count);
2087 rle = resource_list_find(rl, type, *rid);
2089 panic("pci_alloc_map: unexpectedly can't find resource.");
2091 rle->start = rman_get_start(res);
2092 rle->end = rman_get_end(res);
2095 device_printf(child, "lazy allocation of %#lx bytes rid %#x "
2096 "type %d at %#lx\n", count, *rid, type,
2097 rman_get_start(res));
2098 map = rman_get_start(res);
2100 pci_write_config(child, *rid, map, 4);
2103 #endif /* PCI_MAP_FIXUP */
2106 pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
2107 u_long start, u_long end, u_long count, u_int flags)
2109 struct pci_devinfo *dinfo = device_get_ivars(child);
2110 struct resource_list *rl = &dinfo->resources;
2111 #ifdef PCI_MAP_FIXUP
2112 struct resource_list_entry *rle;
2113 #endif /* PCI_MAP_FIXUP */
2114 pcicfgregs *cfg = &dinfo->cfg;
2117 * Perform lazy resource allocation
2119 if (device_get_parent(child) == dev) {
2122 #if defined(__i386__) || defined(__amd64__)
2124 * If device doesn't have an interrupt routed, and is
2125 * deserving of an interrupt, try to assign it one.
2127 if ((cfg->intline == 255 || cfg->intline == 0) &&
2128 (cfg->intpin != 0) &&
2129 (start == 0) && (end == ~0UL)) {
2130 cfg->intline = PCIB_ROUTE_INTERRUPT(
2131 device_get_parent(dev), child,
2133 if (cfg->intline != 255) {
2134 pci_write_config(child, PCIR_INTLINE,
2136 resource_list_add(rl, SYS_RES_IRQ, 0,
2137 cfg->intline, cfg->intline, 1);
2142 case SYS_RES_IOPORT:
2144 case SYS_RES_MEMORY:
2145 if (*rid < PCIR_BAR(cfg->nummaps)) {
2147 * Enable the I/O mode. We should
2148 * also be assigning resources too
2149 * when none are present. The
2150 * resource_list_alloc kind of sorta does
2153 if (PCI_ENABLE_IO(dev, child, type))
2156 #ifdef PCI_MAP_FIXUP
2157 rle = resource_list_find(rl, type, *rid);
2159 return pci_alloc_map(dev, child, type, rid,
2160 start, end, count, flags);
2161 #endif /* PCI_MAP_FIXUP */
2164 #ifdef PCI_MAP_FIXUP
2166 * If we've already allocated the resource, then
2167 * return it now. But first we may need to activate
2168 * it, since we don't allocate the resource as active
2169 * above. Normally this would be done down in the
2170 * nexus, but since we short-circuit that path we have
2171 * to do its job here. Not sure if we should free the
2172 * resource if it fails to activate.
2174 * Note: this also finds and returns resources for
2175 * atapci devices in legacy mode as allocated in
2178 rle = resource_list_find(rl, type, *rid);
2179 if (rle != NULL && rle->res != NULL) {
2181 device_printf(child, "reserved %#lx bytes for "
2182 "rid %#x type %d at %#lx\n",
2183 rman_get_size(rle->res), *rid,
2184 type, rman_get_start(rle->res));
2185 if ((flags & RF_ACTIVE) &&
2186 bus_generic_activate_resource(dev, child, type,
2187 *rid, rle->res) != 0)
2191 #endif /* PCI_MAP_FIXUP */
2193 return resource_list_alloc(rl, dev, child, type, rid,
2194 start, end, count, flags);
2198 pci_release_resource(device_t dev, device_t child, int type, int rid,
2201 struct pci_devinfo *dinfo = device_get_ivars(child);
2202 struct resource_list *rl = &dinfo->resources;
2204 return resource_list_release(rl, dev, child, type, rid, r);
2208 pci_set_resource(device_t dev, device_t child, int type, int rid,
2209 u_long start, u_long count)
2211 struct pci_devinfo *dinfo = device_get_ivars(child);
2212 struct resource_list *rl = &dinfo->resources;
2214 resource_list_add(rl, type, rid, start, start + count - 1, count);
2219 pci_get_resource(device_t dev, device_t child, int type, int rid,
2220 u_long *startp, u_long *countp)
2222 struct pci_devinfo *dinfo = device_get_ivars(child);
2223 struct resource_list *rl = &dinfo->resources;
2224 struct resource_list_entry *rle;
2226 rle = resource_list_find(rl, type, rid);
2231 *startp = rle->start;
2233 *countp = rle->count;
2239 pci_delete_resource(device_t dev, device_t child, int type, int rid)
2241 kprintf("pci_delete_resource: PCI resources can not be deleted\n");
2244 struct resource_list *
2245 pci_get_resource_list (device_t dev, device_t child)
2247 struct pci_devinfo *dinfo = device_get_ivars(child);
2251 return (&dinfo->resources);
2255 pci_read_config_method(device_t dev, device_t child, int reg, int width)
2257 struct pci_devinfo *dinfo = device_get_ivars(child);
2258 pcicfgregs *cfg = &dinfo->cfg;
2260 return PCIB_READ_CONFIG(device_get_parent(dev),
2261 cfg->bus, cfg->slot, cfg->func,
2266 pci_write_config_method(device_t dev, device_t child, int reg,
2267 u_int32_t val, int width)
2269 struct pci_devinfo *dinfo = device_get_ivars(child);
2270 pcicfgregs *cfg = &dinfo->cfg;
2272 PCIB_WRITE_CONFIG(device_get_parent(dev),
2273 cfg->bus, cfg->slot, cfg->func,
2278 pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
2281 struct pci_devinfo *dinfo;
2283 dinfo = device_get_ivars(child);
2284 ksnprintf(buf, buflen, "slot=%d function=%d", pci_get_slot(child),
2285 pci_get_function(child));
2290 pci_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
2293 struct pci_devinfo *dinfo;
2296 dinfo = device_get_ivars(child);
2298 ksnprintf(buf, buflen, "vendor=0x%04x device=0x%04x subvendor=0x%04x "
2299 "subdevice=0x%04x class=0x%02x%02x%02x", cfg->vendor, cfg->device,
2300 cfg->subvendor, cfg->subdevice, cfg->baseclass, cfg->subclass,
2306 pci_assign_interrupt_method(device_t dev, device_t child)
2308 struct pci_devinfo *dinfo = device_get_ivars(child);
2309 pcicfgregs *cfg = &dinfo->cfg;
2311 return (PCIB_ROUTE_INTERRUPT(device_get_parent(dev), child,
2316 pci_modevent(module_t mod, int what, void *arg)
2320 STAILQ_INIT(&pci_devq);
2330 pci_cfg_restore(device_t dev, struct pci_devinfo *dinfo)
2335 * Only do header type 0 devices. Type 1 devices are bridges,
2336 * which we know need special treatment. Type 2 devices are
2337 * cardbus bridges which also require special treatment.
2338 * Other types are unknown, and we err on the side of safety
2341 if (dinfo->cfg.hdrtype != 0)
2345 * Restore the device to full power mode. We must do this
2346 * before we restore the registers because moving from D3 to
2347 * D0 will cause the chip's BARs and some other registers to
2348 * be reset to some unknown power on reset values. Cut down
2349 * the noise on boot by doing nothing if we are already in
2352 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
2353 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
2355 for (i = 0; i < dinfo->cfg.nummaps; i++)
2356 pci_write_config(dev, PCIR_BAR(i), dinfo->cfg.bar[i], 4);
2357 pci_write_config(dev, PCIR_BIOS, dinfo->cfg.bios, 4);
2358 pci_write_config(dev, PCIR_COMMAND, dinfo->cfg.cmdreg, 2);
2359 pci_write_config(dev, PCIR_INTLINE, dinfo->cfg.intline, 1);
2360 pci_write_config(dev, PCIR_INTPIN, dinfo->cfg.intpin, 1);
2361 pci_write_config(dev, PCIR_MINGNT, dinfo->cfg.mingnt, 1);
2362 pci_write_config(dev, PCIR_MAXLAT, dinfo->cfg.maxlat, 1);
2363 pci_write_config(dev, PCIR_CACHELNSZ, dinfo->cfg.cachelnsz, 1);
2364 pci_write_config(dev, PCIR_LATTIMER, dinfo->cfg.lattimer, 1);
2365 pci_write_config(dev, PCIR_PROGIF, dinfo->cfg.progif, 1);
2366 pci_write_config(dev, PCIR_REVID, dinfo->cfg.revid, 1);
2368 /* Restore MSI and MSI-X configurations if they are present. */
2369 if (dinfo->cfg.msi.msi_location != 0)
2370 pci_resume_msi(dev);
2371 if (dinfo->cfg.msix.msix_location != 0)
2372 pci_resume_msix(dev);
2377 pci_cfg_save(device_t dev, struct pci_devinfo *dinfo, int setstate)
2384 * Only do header type 0 devices. Type 1 devices are bridges, which
2385 * we know need special treatment. Type 2 devices are cardbus bridges
2386 * which also require special treatment. Other types are unknown, and
2387 * we err on the side of safety by ignoring them. Powering down
2388 * bridges should not be undertaken lightly.
2390 if (dinfo->cfg.hdrtype != 0)
2392 for (i = 0; i < dinfo->cfg.nummaps; i++)
2393 dinfo->cfg.bar[i] = pci_read_config(dev, PCIR_BAR(i), 4);
2394 dinfo->cfg.bios = pci_read_config(dev, PCIR_BIOS, 4);
2397 * Some drivers apparently write to these registers w/o updating our
2398 * cached copy. No harm happens if we update the copy, so do so here
2399 * so we can restore them. The COMMAND register is modified by the
2400 * bus w/o updating the cache. This should represent the normally
2401 * writable portion of the 'defined' part of type 0 headers. In
2402 * theory we also need to save/restore the PCI capability structures
2403 * we know about, but apart from power we don't know any that are
2406 dinfo->cfg.subvendor = pci_read_config(dev, PCIR_SUBVEND_0, 2);
2407 dinfo->cfg.subdevice = pci_read_config(dev, PCIR_SUBDEV_0, 2);
2408 dinfo->cfg.vendor = pci_read_config(dev, PCIR_VENDOR, 2);
2409 dinfo->cfg.device = pci_read_config(dev, PCIR_DEVICE, 2);
2410 dinfo->cfg.cmdreg = pci_read_config(dev, PCIR_COMMAND, 2);
2411 dinfo->cfg.intline = pci_read_config(dev, PCIR_INTLINE, 1);
2412 dinfo->cfg.intpin = pci_read_config(dev, PCIR_INTPIN, 1);
2413 dinfo->cfg.mingnt = pci_read_config(dev, PCIR_MINGNT, 1);
2414 dinfo->cfg.maxlat = pci_read_config(dev, PCIR_MAXLAT, 1);
2415 dinfo->cfg.cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
2416 dinfo->cfg.lattimer = pci_read_config(dev, PCIR_LATTIMER, 1);
2417 dinfo->cfg.baseclass = pci_read_config(dev, PCIR_CLASS, 1);
2418 dinfo->cfg.subclass = pci_read_config(dev, PCIR_SUBCLASS, 1);
2419 dinfo->cfg.progif = pci_read_config(dev, PCIR_PROGIF, 1);
2420 dinfo->cfg.revid = pci_read_config(dev, PCIR_REVID, 1);
2423 * don't set the state for display devices, base peripherals and
2424 * memory devices since bad things happen when they are powered down.
2425 * We should (a) have drivers that can easily detach and (b) use
2426 * generic drivers for these devices so that some device actually
2427 * attaches. We need to make sure that when we implement (a) we don't
2428 * power the device down on a reattach.
2430 cls = pci_get_class(dev);
2434 switch (pci_do_power_nodriver)
2436 case 0: /* NO powerdown at all */
2438 case 1: /* Conservative about what to power down */
2439 if (cls == PCIC_STORAGE)
2442 case 2: /* Agressive about what to power down */
2443 if (cls == PCIC_DISPLAY || cls == PCIC_MEMORY ||
2444 cls == PCIC_BASEPERIPH)
2447 case 3: /* Power down everything */
2451 if (cls == PCIC_STORAGE)
2455 * PCI spec says we can only go into D3 state from D0 state.
2456 * Transition from D[12] into D0 before going to D3 state.
2458 ps = pci_get_powerstate(dev);
2459 if (ps != PCI_POWERSTATE_D0 && ps != PCI_POWERSTATE_D3)
2460 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
2461 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D3)
2462 pci_set_powerstate(dev, PCI_POWERSTATE_D3);
2466 pci_resume(device_t dev)
2472 struct pci_devinfo *dinfo;
2475 device_get_children(dev, &children, &numdevs);
2477 for (i = 0; i < numdevs; i++) {
2478 child = children[i];
2480 dinfo = device_get_ivars(child);
2482 if (cfg->intpin > 0 && PCI_INTERRUPT_VALID(cfg->intline)) {
2483 cfg->intline = PCI_ASSIGN_INTERRUPT(dev, child);
2484 if (PCI_INTERRUPT_VALID(cfg->intline)) {
2485 pci_write_config(child, PCIR_INTLINE,
2491 kfree(children, M_TEMP);
2493 return (bus_generic_resume(dev));
2497 pci_driver_added(device_t dev, driver_t *driver)
2502 struct pci_devinfo *dinfo;
2506 device_printf(dev, "driver added\n");
2507 DEVICE_IDENTIFY(driver, dev);
2508 device_get_children(dev, &devlist, &numdevs);
2509 for (i = 0; i < numdevs; i++) {
2511 if (device_get_state(child) != DS_NOTPRESENT)
2513 dinfo = device_get_ivars(child);
2514 pci_print_verbose(dinfo);
2516 kprintf("pci%d:%d:%d: reprobing on driver added\n",
2517 dinfo->cfg.bus, dinfo->cfg.slot, dinfo->cfg.func);
2518 pci_cfg_restore(child, dinfo);
2519 if (device_probe_and_attach(child) != 0)
2520 pci_cfg_save(child, dinfo, 1);
2522 kfree(devlist, M_TEMP);
2526 pci_child_detached(device_t parent __unused, device_t child) {
2527 /* Turn child's power off */
2528 pci_cfg_save(child, device_get_ivars(child), 1);
2531 static device_method_t pci_methods[] = {
2532 /* Device interface */
2533 DEVMETHOD(device_probe, pci_probe),
2534 DEVMETHOD(device_attach, pci_attach),
2535 DEVMETHOD(device_shutdown, bus_generic_shutdown),
2536 DEVMETHOD(device_suspend, bus_generic_suspend),
2537 DEVMETHOD(device_resume, pci_resume),
2540 DEVMETHOD(bus_print_child, pci_print_child),
2541 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
2542 DEVMETHOD(bus_read_ivar, pci_read_ivar),
2543 DEVMETHOD(bus_write_ivar, pci_write_ivar),
2544 DEVMETHOD(bus_driver_added, pci_driver_added),
2545 DEVMETHOD(bus_child_detached, pci_child_detached),
2546 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
2547 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
2549 DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
2550 DEVMETHOD(bus_set_resource, pci_set_resource),
2551 DEVMETHOD(bus_get_resource, pci_get_resource),
2552 DEVMETHOD(bus_delete_resource, pci_delete_resource),
2553 DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
2554 DEVMETHOD(bus_release_resource, pci_release_resource),
2555 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
2556 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
2557 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
2558 DEVMETHOD(bus_child_location_str, pci_child_location_str_method),
2561 DEVMETHOD(pci_read_config, pci_read_config_method),
2562 DEVMETHOD(pci_write_config, pci_write_config_method),
2563 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
2564 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
2565 DEVMETHOD(pci_enable_io, pci_enable_io_method),
2566 DEVMETHOD(pci_disable_io, pci_disable_io_method),
2567 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
2568 DEVMETHOD(pci_set_powerstate, pci_set_powerstate_method),
2569 DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
2574 driver_t pci_driver = {
2580 DRIVER_MODULE(pci, pcib, pci_driver, pci_devclass, pci_modevent, 0);
2581 MODULE_VERSION(pci, 1);