2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2000,2001 Jonathan Chen. All rights reserved.
5 * Copyright (c) 2003-2008 M. Warner Losh <imp@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/eventhandler.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/kernel.h>
38 #include <sys/sysctl.h>
41 #include <machine/bus.h>
43 #include <machine/resource.h>
45 #include <sys/pciio.h>
46 #include <dev/pci/pcivar.h>
47 #include <dev/pci/pcireg.h>
48 #include <dev/pci/pci_private.h>
50 #include <dev/cardbus/cardbusreg.h>
51 #include <dev/cardbus/cardbusvar.h>
52 #include <dev/cardbus/cardbus_cis.h>
53 #include <dev/pccard/pccard_cis.h>
54 #include <dev/pccard/pccardvar.h>
60 static SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
62 int cardbus_debug = 0;
63 SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RWTUN,
64 &cardbus_debug, 0, "CardBus debug");
66 int cardbus_cis_debug = 0;
67 SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RWTUN,
68 &cardbus_cis_debug, 0, "CardBus CIS debug");
70 #define DPRINTF(a) if (cardbus_debug) printf a
71 #define DEVPRINTF(x) if (cardbus_debug) device_printf x
73 static int cardbus_attach(device_t cbdev);
74 static int cardbus_attach_card(device_t cbdev);
75 static int cardbus_detach(device_t cbdev);
76 static int cardbus_detach_card(device_t cbdev);
77 static void cardbus_device_setup_regs(pcicfgregs *cfg);
78 static void cardbus_driver_added(device_t cbdev, driver_t *driver);
79 static int cardbus_probe(device_t cbdev);
80 static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
83 /************************************************************************/
85 /************************************************************************/
88 cardbus_probe(device_t cbdev)
90 device_set_desc(cbdev, "CardBus bus");
95 cardbus_attach(device_t cbdev)
97 struct cardbus_softc *sc;
102 sc = device_get_softc(cbdev);
106 sc->sc_bus = bus_alloc_resource(cbdev, PCI_RES_BUS, &rid,
107 pcib_get_bus(cbdev), pcib_get_bus(cbdev), 1, 0);
108 if (sc->sc_bus == NULL) {
109 device_printf(cbdev, "failed to allocate bus number\n");
113 device_printf(cbdev, "Your bus numbers may be AFU\n");
119 cardbus_detach(device_t cbdev)
122 struct cardbus_softc *sc;
125 cardbus_detach_card(cbdev);
127 sc = device_get_softc(cbdev);
128 device_printf(cbdev, "Freeing up the allocatd bus\n");
129 (void)bus_release_resource(cbdev, PCI_RES_BUS, 0, sc->sc_bus);
135 cardbus_suspend(device_t self)
138 cardbus_detach_card(self);
143 cardbus_resume(device_t self)
149 /************************************************************************/
150 /* Attach/Detach card */
151 /************************************************************************/
154 cardbus_device_setup_regs(pcicfgregs *cfg)
156 device_t dev = cfg->dev;
160 * Some cards power up with garbage in their BARs. This
161 * code clears all that junk out.
163 for (i = 0; i < PCIR_MAX_BAR_0; i++)
164 pci_write_config(dev, PCIR_BAR(i), 0, 4);
167 pci_get_irq(device_get_parent(device_get_parent(dev)));
168 pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1);
169 pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1);
170 pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1);
171 pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
172 pci_write_config(dev, PCIR_MAXLAT, 0x14, 1);
175 static struct pci_devinfo *
176 cardbus_alloc_devinfo(device_t dev)
178 struct cardbus_devinfo *dinfo;
180 dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
181 return (&dinfo->pci);
185 cardbus_attach_card(device_t cbdev)
187 device_t brdev = device_get_parent(cbdev);
189 int bus, domain, slot, func;
190 int cardattached = 0;
191 int cardbusfunchigh = 0;
192 struct cardbus_softc *sc;
194 sc = device_get_softc(cbdev);
195 cardbus_detach_card(cbdev); /* detach existing cards */
196 POWER_DISABLE_SOCKET(brdev, cbdev); /* Turn the socket off first */
197 POWER_ENABLE_SOCKET(brdev, cbdev);
198 domain = pcib_get_domain(cbdev);
199 bus = pcib_get_bus(cbdev);
202 /* For each function, set it up and try to attach a driver to it */
203 for (func = 0; func <= cardbusfunchigh; func++) {
204 struct cardbus_devinfo *dinfo;
206 dinfo = (struct cardbus_devinfo *)
207 pci_read_device(brdev, cbdev, domain, bus, slot, func);
210 if (dinfo->pci.cfg.mfdev)
211 cardbusfunchigh = PCI_FUNCMAX;
213 child = device_add_child(cbdev, NULL, -1);
215 DEVPRINTF((cbdev, "Cannot add child!\n"));
216 pci_freecfg((struct pci_devinfo *)dinfo);
219 dinfo->pci.cfg.dev = child;
220 resource_list_init(&dinfo->pci.resources);
221 device_set_ivars(child, dinfo);
222 cardbus_device_create(sc, dinfo, cbdev, child);
223 if (cardbus_do_cis(cbdev, child) != 0)
224 DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n"));
225 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0);
226 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
227 cardbus_device_setup_regs(&dinfo->pci.cfg);
228 pci_add_resources(cbdev, child, 1, dinfo->mprefetchable);
229 pci_print_verbose(&dinfo->pci);
230 if (device_probe_and_attach(child) == 0)
233 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1);
236 if (cardattached > 0)
238 /* POWER_DISABLE_SOCKET(brdev, cbdev); */
243 cardbus_child_deleted(device_t cbdev, device_t child)
245 struct cardbus_devinfo *dinfo = device_get_ivars(child);
247 if (dinfo->pci.cfg.dev != child)
248 device_printf(cbdev, "devinfo dev mismatch\n");
249 cardbus_device_destroy(dinfo);
250 pci_child_deleted(cbdev, child);
254 cardbus_detach_card(device_t cbdev)
258 err = bus_generic_detach(cbdev);
261 err = device_delete_children(cbdev);
265 POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
270 cardbus_driver_added(device_t cbdev, driver_t *driver)
276 struct cardbus_devinfo *dinfo;
278 DEVICE_IDENTIFY(driver, cbdev);
279 if (device_get_children(cbdev, &devlist, &numdevs) != 0)
283 * If there are no drivers attached, but there are children,
284 * then power the card up.
286 for (i = 0; i < numdevs; i++) {
288 if (device_get_state(dev) != DS_NOTPRESENT)
291 if (i > 0 && i == numdevs)
292 POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
293 for (i = 0; i < numdevs; i++) {
295 if (device_get_state(dev) != DS_NOTPRESENT)
297 dinfo = device_get_ivars(dev);
298 pci_print_verbose(&dinfo->pci);
300 printf("pci%d:%d:%d:%d: reprobing on driver added\n",
301 dinfo->pci.cfg.domain, dinfo->pci.cfg.bus,
302 dinfo->pci.cfg.slot, dinfo->pci.cfg.func);
303 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
304 if (device_probe_and_attach(dev) != 0)
305 pci_cfg_save(dev, &dinfo->pci, 1);
307 free(devlist, M_TEMP);
310 /************************************************************************/
311 /* Other Bus Methods */
312 /************************************************************************/
315 cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
317 struct cardbus_devinfo *dinfo;
320 dinfo = device_get_ivars(child);
321 cfg = &dinfo->pci.cfg;
324 case PCI_IVAR_ETHADDR:
326 * The generic accessor doesn't deal with failure, so
327 * we set the return value, then return an error.
329 if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
330 *((uint8_t **) result) = dinfo->funce.lan.nid;
333 *((uint8_t **) result) = NULL;
336 return (pci_read_ivar(cbdev, child, which, result));
341 static device_method_t cardbus_methods[] = {
342 /* Device interface */
343 DEVMETHOD(device_probe, cardbus_probe),
344 DEVMETHOD(device_attach, cardbus_attach),
345 DEVMETHOD(device_detach, cardbus_detach),
346 DEVMETHOD(device_suspend, cardbus_suspend),
347 DEVMETHOD(device_resume, cardbus_resume),
350 DEVMETHOD(bus_child_deleted, cardbus_child_deleted),
351 DEVMETHOD(bus_get_dma_tag, bus_generic_get_dma_tag),
352 DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
353 DEVMETHOD(bus_driver_added, cardbus_driver_added),
354 DEVMETHOD(bus_rescan, bus_null_rescan),
357 DEVMETHOD(card_attach_card, cardbus_attach_card),
358 DEVMETHOD(card_detach_card, cardbus_detach_card),
361 DEVMETHOD(pci_alloc_devinfo, cardbus_alloc_devinfo),
366 DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods,
367 sizeof(struct cardbus_softc), pci_driver);
369 static devclass_t cardbus_devclass;
371 DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
372 MODULE_VERSION(cardbus, 1);