2 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Lennart Augustsson (augustss@carlstedt.se) at
7 * Carlstedt Research & Technology.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following 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 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the NetBSD
20 * Foundation, Inc. and its contributors.
21 * 4. Neither the name of The NetBSD Foundation nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
37 * $FreeBSD: src/sys/dev/usb/ehci_pci.c,v 1.18.2.1 2006/01/26 01:43:13 iedowse Exp $
41 * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
43 * The EHCI 1.0 spec can be found at
44 * http://developer.intel.com/technology/usb/download/ehci-r10.pdf
45 * and the USB 2.0 spec at
46 * http://www.usb.org/developers/docs/usb_20.zip
49 /* The low level controller code for EHCI has been split into
50 * PCI probes and EHCI specific code. This was done to facilitate the
51 * sharing of code between *BSD's
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/kernel.h>
57 #include <sys/module.h>
59 #include <sys/queue.h>
63 #include <bus/pci/pcivar.h>
64 #include <bus/pci/pcireg.h>
66 #include <bus/usb/usb.h>
67 #include <bus/usb/usbdi.h>
68 #include <bus/usb/usbdivar.h>
69 #include <bus/usb/usb_mem.h>
71 #include <bus/usb/ehcireg.h>
72 #include <bus/usb/ehcivar.h>
74 #define PCI_EHCI_VENDORID_ACERLABS 0x10b9
75 #define PCI_EHCI_VENDORID_AMD 0x1022
76 #define PCI_EHCI_VENDORID_APPLE 0x106b
77 #define PCI_EHCI_VENDORID_ATI 0x1002
78 #define PCI_EHCI_VENDORID_CMDTECH 0x1095
79 #define PCI_EHCI_VENDORID_INTEL 0x8086
80 #define PCI_EHCI_VENDORID_NEC 0x1033
81 #define PCI_EHCI_VENDORID_OPTI 0x1045
82 #define PCI_EHCI_VENDORID_PHILIPS 0x1131
83 #define PCI_EHCI_VENDORID_SIS 0x1039
84 #define PCI_EHCI_VENDORID_NVIDIA 0x12D2
85 #define PCI_EHCI_VENDORID_NVIDIA2 0x10DE
86 #define PCI_EHCI_VENDORID_VIA 0x1106
89 #define PCI_EHCI_DEVICEID_M5239 0x523910b9
90 static const char *ehci_device_m5239 = "ALi M5239 USB 2.0 controller";
93 #define PCI_EHCI_DEVICEID_8111 0x74631022
94 #define PCI_EHCI_DEVICEID_CS5536 0x20951022
95 static const char *ehci_device_8111 = "AMD 8111 USB 2.0 controller";
96 static const char *ehci_device_CS5536 = "AMD CS5536 USB 2.0 controller";
99 #define PCI_EHCI_DEVICEID_SB200 0x43451002
100 static const char *ehci_device_sb200 = "ATI SB200 USB 2.0 controller";
101 #define PCI_EHCI_DEVICEID_SB400 0x43731002
102 static const char *ehci_device_sb400 = "ATI SB400 USB 2.0 controller";
105 #define PCI_EHCI_DEVICEID_6300 0x25ad8086
106 static const char *ehci_device_6300 = "Intel 6300ESB USB 2.0 controller";
107 #define PCI_EHCI_DEVICEID_ICH4 0x24cd8086
108 static const char *ehci_device_ich4 = "Intel 82801DB/L/M USB 2.0 controller";
109 #define PCI_EHCI_DEVICEID_ICH5 0x24dd8086
110 static const char *ehci_device_ich5 = "Intel 82801EB/R USB 2.0 controller";
111 #define PCI_EHCI_DEVICEID_ICH6 0x265c8086
112 static const char *ehci_device_ich6 = "Intel 82801FB USB 2.0 controller";
113 #define PCI_EHCI_DEVICEID_ICH7 0x27cc8086
114 static const char *ehci_device_ich7 = "Intel 82801GB/R USB 2.0 controller";
117 #define PCI_EHCI_DEVICEID_NEC 0x00e01033
118 static const char *ehci_device_nec = "NEC uPD 720100 USB 2.0 controller";
121 #define PCI_EHCI_DEVICEID_NF2 0x006810de
122 static const char *ehci_device_nf2 = "NVIDIA nForce2 USB 2.0 controller";
123 #define PCI_EHCI_DEVICEID_NF2_400 0x008810de
124 static const char *ehci_device_nf2_400 = "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
125 #define PCI_EHCI_DEVICEID_NF3 0x00d810de
126 static const char *ehci_device_nf3 = "NVIDIA nForce3 USB 2.0 controller";
127 #define PCI_EHCI_DEVICEID_NF3_250 0x00e810de
128 static const char *ehci_device_nf3_250 = "NVIDIA nForce3 250 USB 2.0 controller";
129 #define PCI_EHCI_DEVICEID_NF4 0x005b10de
130 static const char *ehci_device_nf4 = "NVIDIA nForce4 USB 2.0 controller";
133 #define PCI_EHCI_DEVICEID_ISP156X 0x15621131
134 static const char *ehci_device_isp156x = "Philips ISP156x USB 2.0 controller";
137 #define PCI_EHCI_DEVICEID_VIA 0x31041106
138 static const char *ehci_device_via = "VIA VT6202 USB 2.0 controller";
141 static const char *ehci_device_generic = "EHCI (generic) USB 2.0 controller";
143 #define PCI_EHCI_BASE_REG 0x10
146 #define EHCI_DEBUG USB_DEBUG
147 #define DPRINTF(x) do { if (ehcidebug) kprintf x; } while (0)
148 extern int ehcidebug;
153 static int ehci_pci_attach(device_t self);
154 static int ehci_pci_detach(device_t self);
155 static int ehci_pci_shutdown(device_t self);
156 static int ehci_pci_suspend(device_t self);
157 static int ehci_pci_resume(device_t self);
158 static void ehci_pci_givecontroller(device_t self);
159 static void ehci_pci_takecontroller(device_t self);
162 ehci_pci_suspend(device_t self)
164 ehci_softc_t *sc = device_get_softc(self);
167 err = bus_generic_suspend(self);
170 ehci_power(PWR_SUSPEND, sc);
176 ehci_pci_resume(device_t self)
178 ehci_softc_t *sc = device_get_softc(self);
180 ehci_pci_takecontroller(self);
181 ehci_power(PWR_RESUME, sc);
182 bus_generic_resume(self);
188 ehci_pci_shutdown(device_t self)
190 ehci_softc_t *sc = device_get_softc(self);
193 err = bus_generic_shutdown(self);
194 if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
196 ehci_pci_givecontroller(self);
203 ehci_pci_match(device_t self)
205 u_int32_t device_id = pci_get_devid(self);
208 case PCI_EHCI_DEVICEID_M5239:
209 return (ehci_device_m5239);
210 case PCI_EHCI_DEVICEID_8111:
211 return (ehci_device_8111);
212 case PCI_EHCI_DEVICEID_CS5536:
213 return (ehci_device_CS5536);
214 case PCI_EHCI_DEVICEID_SB200:
215 return (ehci_device_sb200);
216 case PCI_EHCI_DEVICEID_SB400:
217 return (ehci_device_sb400);
218 case PCI_EHCI_DEVICEID_6300:
219 return (ehci_device_6300);
220 case PCI_EHCI_DEVICEID_ICH4:
221 return (ehci_device_ich4);
222 case PCI_EHCI_DEVICEID_ICH5:
223 return (ehci_device_ich5);
224 case PCI_EHCI_DEVICEID_ICH6:
225 return (ehci_device_ich6);
226 case PCI_EHCI_DEVICEID_ICH7:
227 return (ehci_device_ich7);
228 case PCI_EHCI_DEVICEID_NEC:
229 return (ehci_device_nec);
230 case PCI_EHCI_DEVICEID_NF2:
231 return (ehci_device_nf2);
232 case PCI_EHCI_DEVICEID_NF2_400:
233 return (ehci_device_nf2_400);
234 case PCI_EHCI_DEVICEID_NF3:
235 return (ehci_device_nf3);
236 case PCI_EHCI_DEVICEID_NF3_250:
237 return (ehci_device_nf3_250);
238 case PCI_EHCI_DEVICEID_NF4:
239 return (ehci_device_nf4);
240 case PCI_EHCI_DEVICEID_ISP156X:
241 return (ehci_device_isp156x);
242 case PCI_EHCI_DEVICEID_VIA:
243 return (ehci_device_via);
245 if (pci_get_class(self) == PCIC_SERIALBUS
246 && pci_get_subclass(self) == PCIS_SERIALBUS_USB
247 && pci_get_progif(self) == PCI_INTERFACE_EHCI) {
248 return (ehci_device_generic);
252 return NULL; /* dunno */
256 ehci_pci_probe(device_t self)
258 const char *desc = ehci_pci_match(self);
261 device_set_desc(self, desc);
262 device_set_async_attach(self, TRUE);
270 ehci_pci_attach(device_t self)
272 ehci_softc_t *sc = device_get_softc(self);
276 struct usb_softc *usb_sc;
277 struct usbd_bus *bsc;
286 switch(pci_read_config(self, PCI_USBREV, 1) & PCI_USBREV_MASK) {
287 case PCI_USBREV_PRE_1_0:
290 sc->sc_bus.usbrev = USBREV_UNKNOWN;
291 kprintf("pre-2.0 USB rev\n");
294 sc->sc_bus.usbrev = USBREV_2_0;
297 sc->sc_bus.usbrev = USBREV_UNKNOWN;
301 pci_enable_busmaster(self);
304 sc->io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
307 device_printf(self, "Could not map memory\n");
310 sc->iot = rman_get_bustag(sc->io_res);
311 sc->ioh = rman_get_bushandle(sc->io_res);
314 sc->irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
315 RF_SHAREABLE | RF_ACTIVE);
316 if (sc->irq_res == NULL) {
317 device_printf(self, "Could not allocate irq\n");
318 ehci_pci_detach(self);
321 sc->sc_bus.bdev = device_add_child(self, "usb", -1);
322 if (!sc->sc_bus.bdev) {
323 device_printf(self, "Could not add USB device\n");
324 ehci_pci_detach(self);
327 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
329 /* ehci_pci_match will never return NULL if ehci_pci_probe succeeded */
330 device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
331 switch (pci_get_vendor(self)) {
332 case PCI_EHCI_VENDORID_ACERLABS:
333 ksprintf(sc->sc_vendor, "AcerLabs");
335 case PCI_EHCI_VENDORID_AMD:
336 ksprintf(sc->sc_vendor, "AMD");
338 case PCI_EHCI_VENDORID_APPLE:
339 ksprintf(sc->sc_vendor, "Apple");
341 case PCI_EHCI_VENDORID_ATI:
342 ksprintf(sc->sc_vendor, "ATI");
344 case PCI_EHCI_VENDORID_CMDTECH:
345 ksprintf(sc->sc_vendor, "CMDTECH");
347 case PCI_EHCI_VENDORID_INTEL:
348 ksprintf(sc->sc_vendor, "Intel");
350 case PCI_EHCI_VENDORID_NEC:
351 ksprintf(sc->sc_vendor, "NEC");
353 case PCI_EHCI_VENDORID_OPTI:
354 ksprintf(sc->sc_vendor, "OPTi");
356 case PCI_EHCI_VENDORID_SIS:
357 ksprintf(sc->sc_vendor, "SiS");
359 case PCI_EHCI_VENDORID_NVIDIA:
360 case PCI_EHCI_VENDORID_NVIDIA2:
361 ksprintf(sc->sc_vendor, "nVidia");
363 case PCI_EHCI_VENDORID_VIA:
364 ksprintf(sc->sc_vendor, "VIA");
368 device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
369 pci_get_devid(self));
370 ksprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
373 err = bus_setup_intr(self, sc->irq_res, 0,
374 (driver_intr_t *) ehci_intr, sc, &sc->ih, NULL);
376 device_printf(self, "Could not setup irq, %d\n", err);
378 ehci_pci_detach(self);
382 /* Enable workaround for dropped interrupts as required */
383 switch (pci_get_vendor(self)) {
384 case PCI_EHCI_VENDORID_ATI:
385 case PCI_EHCI_VENDORID_VIA:
386 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
389 "Dropped interrupts workaround enabled\n");
396 * Find companion controllers. According to the spec they always
397 * have lower function numbers so they should be enumerated already.
399 parent = device_get_parent(self);
400 res = device_get_children(parent, &neighbors, &count);
402 device_printf(self, "Error finding companion busses\n");
403 ehci_pci_detach(self);
407 slot = pci_get_slot(self);
408 function = pci_get_function(self);
409 for (i = 0; i < count; i++) {
410 if (pci_get_slot(neighbors[i]) == slot && \
411 pci_get_function(neighbors[i]) < function) {
412 res = device_get_children(neighbors[i],
414 if (res != 0 || buscount != 1)
416 usb_sc = device_get_softc(nbus[0]);
419 bsc = usb_getbushandle(usb_sc);
422 DPRINTF(("ehci_pci_attach: companion %s\n",
423 device_get_nameunit(bsc->bdev)));
424 sc->sc_comps[ncomp++] = bsc;
425 if (ncomp >= EHCI_COMPANION_MAX)
429 sc->sc_ncomp = ncomp;
431 ehci_pci_takecontroller(self);
434 err = device_probe_and_attach(sc->sc_bus.bdev);
437 device_printf(self, "USB init failed err=%d\n", err);
438 ehci_pci_detach(self);
445 ehci_pci_detach(device_t self)
447 ehci_softc_t *sc = device_get_softc(self);
449 if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
451 sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
455 * disable interrupts that might have been switched on in ehci_init
457 if (sc->iot && sc->ioh)
458 bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0);
460 if (sc->irq_res && sc->ih) {
461 int err = bus_teardown_intr(self, sc->irq_res, sc->ih);
464 /* XXX or should we panic? */
465 device_printf(self, "Could not tear down irq, %d\n",
469 if (sc->sc_bus.bdev) {
470 device_delete_child(self, sc->sc_bus.bdev);
471 sc->sc_bus.bdev = NULL;
474 bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res);
478 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, sc->io_res);
487 ehci_pci_takecontroller(device_t self)
489 ehci_softc_t *sc = device_get_softc(self);
490 u_int32_t cparams, eec, legsup;
493 cparams = EREAD4(sc, EHCI_HCCPARAMS);
495 /* Synchronise with the BIOS if it owns the controller. */
496 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
497 eecp = EHCI_EECP_NEXT(eec)) {
498 eec = pci_read_config(self, eecp, 4);
499 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP)
502 pci_write_config(self, eecp, legsup | EHCI_LEGSUP_OSOWNED, 4);
503 if (legsup & EHCI_LEGSUP_BIOSOWNED) {
504 device_printf(sc->sc_bus.bdev,
505 "waiting for BIOS to give up control\n");
506 for (i = 0; i < 5000; i++) {
507 legsup = pci_read_config(self, eecp, 4);
508 if ((legsup & EHCI_LEGSUP_BIOSOWNED) == 0)
512 if (legsup & EHCI_LEGSUP_BIOSOWNED)
513 device_printf(sc->sc_bus.bdev,
514 "timed out waiting for BIOS\n");
520 * Return the controller to the BIOS. Do we really need to do this?
522 * One thing we do need to do is give the chip reset (from the shutdown)
523 * time to finish before handing anything back. This fixes a machine
527 ehci_pci_givecontroller(device_t self)
529 ehci_softc_t *sc = device_get_softc(self);
530 u_int32_t cparams, eec, legsup;
534 cparams = EREAD4(sc, EHCI_HCCPARAMS);
535 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
536 eecp = EHCI_EECP_NEXT(eec)) {
537 eec = pci_read_config(self, eecp, 4);
538 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP)
541 pci_write_config(self, eecp, legsup & ~EHCI_LEGSUP_OSOWNED, 4);
545 static device_method_t ehci_methods[] = {
546 /* Device interface */
547 DEVMETHOD(device_probe, ehci_pci_probe),
548 DEVMETHOD(device_attach, ehci_pci_attach),
549 DEVMETHOD(device_detach, ehci_pci_detach),
550 DEVMETHOD(device_suspend, ehci_pci_suspend),
551 DEVMETHOD(device_resume, ehci_pci_resume),
552 DEVMETHOD(device_shutdown, ehci_pci_shutdown),
555 DEVMETHOD(bus_print_child, bus_generic_print_child),
560 static driver_t ehci_driver = {
563 sizeof(ehci_softc_t),
566 static devclass_t ehci_devclass;
568 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, NULL, NULL);
569 DRIVER_MODULE(ehci, cardbus, ehci_driver, ehci_devclass, NULL, NULL);