2 * Copyright (c) 2003-2008 M. Warner Losh. All Rights Reserved.
3 * Copyright (c) 2000,2001 Jonathan Chen. All rights reserved.
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
34 #include <sys/kernel.h>
35 #include <sys/sysctl.h>
38 #include <machine/bus.h>
40 #include <machine/resource.h>
42 #include <sys/pciio.h>
43 #include <dev/pci/pcivar.h>
44 #include <dev/pci/pcireg.h>
45 #include <dev/pci/pci_private.h>
47 #include <dev/cardbus/cardbusreg.h>
48 #include <dev/cardbus/cardbusvar.h>
49 #include <dev/cardbus/cardbus_cis.h>
50 #include <dev/pccard/pccard_cis.h>
51 #include <dev/pccard/pccardvar.h>
57 SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
59 int cardbus_debug = 0;
60 TUNABLE_INT("hw.cardbus.debug", &cardbus_debug);
61 SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW,
65 int cardbus_cis_debug = 0;
66 TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug);
67 SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW,
68 &cardbus_cis_debug, 0,
71 #define DPRINTF(a) if (cardbus_debug) printf a
72 #define DEVPRINTF(x) if (cardbus_debug) device_printf x
74 static int cardbus_attach(device_t cbdev);
75 static int cardbus_attach_card(device_t cbdev);
76 static int cardbus_detach(device_t cbdev);
77 static int cardbus_detach_card(device_t cbdev);
78 static void cardbus_device_setup_regs(pcicfgregs *cfg);
79 static void cardbus_driver_added(device_t cbdev, driver_t *driver);
80 static int cardbus_probe(device_t cbdev);
81 static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
83 static void cardbus_release_all_resources(device_t cbdev,
84 struct cardbus_devinfo *dinfo);
86 /************************************************************************/
88 /************************************************************************/
91 cardbus_probe(device_t cbdev)
93 device_set_desc(cbdev, "CardBus bus");
98 cardbus_attach(device_t cbdev)
100 struct cardbus_softc *sc;
102 sc = device_get_softc(cbdev);
108 cardbus_detach(device_t cbdev)
111 cardbus_detach_card(cbdev);
116 cardbus_suspend(device_t self)
119 cardbus_detach_card(self);
124 cardbus_resume(device_t self)
130 /************************************************************************/
131 /* Attach/Detach card */
132 /************************************************************************/
135 cardbus_device_setup_regs(pcicfgregs *cfg)
137 device_t dev = cfg->dev;
141 * Some cards power up with garbage in their BARs. This
142 * code clears all that junk out.
144 for (i = 0; i < PCIR_MAX_BAR_0; i++)
145 pci_write_config(dev, PCIR_BAR(i), 0, 4);
148 pci_get_irq(device_get_parent(device_get_parent(dev)));
149 pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1);
150 pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1);
151 pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1);
152 pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
153 pci_write_config(dev, PCIR_MAXLAT, 0x14, 1);
157 cardbus_attach_card(device_t cbdev)
159 device_t brdev = device_get_parent(cbdev);
161 int bus, domain, slot, func;
162 int cardattached = 0;
163 int cardbusfunchigh = 0;
164 struct cardbus_softc *sc;
166 sc = device_get_softc(cbdev);
167 cardbus_detach_card(cbdev); /* detach existing cards */
168 POWER_ENABLE_SOCKET(brdev, cbdev);
169 domain = pcib_get_domain(cbdev);
170 bus = pcib_get_bus(cbdev);
172 /* For each function, set it up and try to attach a driver to it */
173 for (func = 0; func <= cardbusfunchigh; func++) {
174 struct cardbus_devinfo *dinfo;
176 dinfo = (struct cardbus_devinfo *)
177 pci_read_device(brdev, domain, bus, slot, func,
178 sizeof(struct cardbus_devinfo));
181 if (dinfo->pci.cfg.mfdev)
182 cardbusfunchigh = PCI_FUNCMAX;
184 child = device_add_child(cbdev, NULL, -1);
186 DEVPRINTF((cbdev, "Cannot add child!\n"));
187 pci_freecfg((struct pci_devinfo *)dinfo);
190 dinfo->pci.cfg.dev = child;
191 resource_list_init(&dinfo->pci.resources);
192 device_set_ivars(child, dinfo);
193 cardbus_device_create(sc, dinfo, cbdev, child);
194 if (cardbus_do_cis(cbdev, child) != 0)
195 DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n"));
196 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0);
197 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
198 cardbus_device_setup_regs(&dinfo->pci.cfg);
199 pci_add_resources(cbdev, child, 1, dinfo->mprefetchable);
200 pci_print_verbose(&dinfo->pci);
201 if (device_probe_and_attach(child) == 0)
204 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1);
206 if (cardattached > 0)
208 /* POWER_DISABLE_SOCKET(brdev, cbdev); */
213 cardbus_detach_card(device_t cbdev)
220 if (device_get_children(cbdev, &devlist, &numdevs) != 0)
223 free(devlist, M_TEMP);
227 for (tmp = 0; tmp < numdevs; tmp++) {
228 struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]);
229 int status = device_get_state(devlist[tmp]);
231 if (dinfo->pci.cfg.dev != devlist[tmp])
232 device_printf(cbdev, "devinfo dev mismatch\n");
233 if (status == DS_ATTACHED || status == DS_BUSY)
234 device_detach(devlist[tmp]);
235 cardbus_release_all_resources(cbdev, dinfo);
236 cardbus_device_destroy(dinfo);
237 device_delete_child(cbdev, devlist[tmp]);
238 pci_freecfg((struct pci_devinfo *)dinfo);
240 POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
241 free(devlist, M_TEMP);
246 cardbus_driver_added(device_t cbdev, driver_t *driver)
252 struct cardbus_devinfo *dinfo;
254 DEVICE_IDENTIFY(driver, cbdev);
255 if (device_get_children(cbdev, &devlist, &numdevs) != 0)
259 * If there are no drivers attached, but there are children,
260 * then power the card up.
262 for (i = 0; i < numdevs; i++) {
264 if (device_get_state(dev) != DS_NOTPRESENT)
267 if (i > 0 && i == numdevs)
268 POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
269 for (i = 0; i < numdevs; i++) {
271 if (device_get_state(dev) != DS_NOTPRESENT)
273 dinfo = device_get_ivars(dev);
274 pci_print_verbose(&dinfo->pci);
276 printf("pci%d:%d:%d:%d: reprobing on driver added\n",
277 dinfo->pci.cfg.domain, dinfo->pci.cfg.bus,
278 dinfo->pci.cfg.slot, dinfo->pci.cfg.func);
279 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
280 if (device_probe_and_attach(dev) != 0)
281 pci_cfg_save(dev, &dinfo->pci, 1);
283 free(devlist, M_TEMP);
287 cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo)
289 struct resource_list_entry *rle;
292 /* Turn off access to resources we're about to free */
293 dev = dinfo->pci.cfg.dev;
294 pci_write_config(dev, PCIR_COMMAND,
295 pci_read_config(dev, PCIR_COMMAND, 2) &
296 ~(PCIM_CMD_MEMEN | PCIM_CMD_PORTEN), 2);
297 /* Free all allocated resources */
298 STAILQ_FOREACH(rle, &dinfo->pci.resources, link) {
300 BUS_RELEASE_RESOURCE(device_get_parent(cbdev),
301 cbdev, rle->type, rle->rid, rle->res);
305 resource_list_free(&dinfo->pci.resources);
308 /************************************************************************/
309 /* Other Bus Methods */
310 /************************************************************************/
313 cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
315 struct cardbus_devinfo *dinfo;
318 dinfo = device_get_ivars(child);
319 cfg = &dinfo->pci.cfg;
322 case PCI_IVAR_ETHADDR:
324 * The generic accessor doesn't deal with failure, so
325 * we set the return value, then return an error.
327 if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
328 *((uint8_t **) result) = dinfo->funce.lan.nid;
331 *((uint8_t **) result) = NULL;
334 return (pci_read_ivar(cbdev, child, which, result));
339 static device_method_t cardbus_methods[] = {
340 /* Device interface */
341 DEVMETHOD(device_probe, cardbus_probe),
342 DEVMETHOD(device_attach, cardbus_attach),
343 DEVMETHOD(device_detach, cardbus_detach),
344 DEVMETHOD(device_suspend, cardbus_suspend),
345 DEVMETHOD(device_resume, cardbus_resume),
348 DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
349 DEVMETHOD(bus_write_ivar, pci_write_ivar),
350 DEVMETHOD(bus_driver_added, cardbus_driver_added),
353 DEVMETHOD(card_attach_card, cardbus_attach_card),
354 DEVMETHOD(card_detach_card, cardbus_detach_card),
359 DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods,
360 sizeof(struct cardbus_softc), pci_driver);
362 static devclass_t cardbus_devclass;
364 DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
365 MODULE_VERSION(cardbus, 1);