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 static SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
59 int cardbus_debug = 0;
60 SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RWTUN,
61 &cardbus_debug, 0, "CardBus debug");
63 int cardbus_cis_debug = 0;
64 SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RWTUN,
65 &cardbus_cis_debug, 0, "CardBus CIS debug");
67 #define DPRINTF(a) if (cardbus_debug) printf a
68 #define DEVPRINTF(x) if (cardbus_debug) device_printf x
70 static int cardbus_attach(device_t cbdev);
71 static int cardbus_attach_card(device_t cbdev);
72 static int cardbus_detach(device_t cbdev);
73 static int cardbus_detach_card(device_t cbdev);
74 static void cardbus_device_setup_regs(pcicfgregs *cfg);
75 static void cardbus_driver_added(device_t cbdev, driver_t *driver);
76 static int cardbus_probe(device_t cbdev);
77 static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
80 /************************************************************************/
82 /************************************************************************/
85 cardbus_probe(device_t cbdev)
87 device_set_desc(cbdev, "CardBus bus");
92 cardbus_attach(device_t cbdev)
94 struct cardbus_softc *sc;
99 sc = device_get_softc(cbdev);
103 sc->sc_bus = bus_alloc_resource(cbdev, PCI_RES_BUS, &rid,
104 pcib_get_bus(cbdev), pcib_get_bus(cbdev), 1, 0);
105 if (sc->sc_bus == NULL) {
106 device_printf(cbdev, "failed to allocate bus number\n");
114 cardbus_detach(device_t cbdev)
117 struct cardbus_softc *sc;
120 cardbus_detach_card(cbdev);
122 sc = device_get_softc(cbdev);
123 (void)bus_release_resource(cbdev, PCI_RES_BUS, 0, sc->sc_bus);
129 cardbus_suspend(device_t self)
132 cardbus_detach_card(self);
137 cardbus_resume(device_t self)
143 /************************************************************************/
144 /* Attach/Detach card */
145 /************************************************************************/
148 cardbus_device_setup_regs(pcicfgregs *cfg)
150 device_t dev = cfg->dev;
154 * Some cards power up with garbage in their BARs. This
155 * code clears all that junk out.
157 for (i = 0; i < PCIR_MAX_BAR_0; i++)
158 pci_write_config(dev, PCIR_BAR(i), 0, 4);
161 pci_get_irq(device_get_parent(device_get_parent(dev)));
162 pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1);
163 pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1);
164 pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1);
165 pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
166 pci_write_config(dev, PCIR_MAXLAT, 0x14, 1);
170 cardbus_attach_card(device_t cbdev)
172 device_t brdev = device_get_parent(cbdev);
174 int bus, domain, slot, func;
175 int cardattached = 0;
176 int cardbusfunchigh = 0;
177 struct cardbus_softc *sc;
179 sc = device_get_softc(cbdev);
180 cardbus_detach_card(cbdev); /* detach existing cards */
181 POWER_ENABLE_SOCKET(brdev, cbdev);
182 domain = pcib_get_domain(cbdev);
183 bus = pcib_get_bus(cbdev);
185 /* For each function, set it up and try to attach a driver to it */
186 for (func = 0; func <= cardbusfunchigh; func++) {
187 struct cardbus_devinfo *dinfo;
189 dinfo = (struct cardbus_devinfo *)
190 pci_read_device(brdev, domain, bus, slot, func,
191 sizeof(struct cardbus_devinfo));
194 if (dinfo->pci.cfg.mfdev)
195 cardbusfunchigh = PCI_FUNCMAX;
197 child = device_add_child(cbdev, NULL, -1);
199 DEVPRINTF((cbdev, "Cannot add child!\n"));
200 pci_freecfg((struct pci_devinfo *)dinfo);
203 dinfo->pci.cfg.dev = child;
204 resource_list_init(&dinfo->pci.resources);
205 device_set_ivars(child, dinfo);
206 cardbus_device_create(sc, dinfo, cbdev, child);
207 if (cardbus_do_cis(cbdev, child) != 0)
208 DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n"));
209 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0);
210 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
211 cardbus_device_setup_regs(&dinfo->pci.cfg);
212 pci_add_resources(cbdev, child, 1, dinfo->mprefetchable);
213 pci_print_verbose(&dinfo->pci);
214 if (device_probe_and_attach(child) == 0)
217 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1);
219 if (cardattached > 0)
221 /* POWER_DISABLE_SOCKET(brdev, cbdev); */
226 cardbus_detach_card(device_t cbdev)
233 if (device_get_children(cbdev, &devlist, &numdevs) != 0)
236 free(devlist, M_TEMP);
240 for (tmp = 0; tmp < numdevs; tmp++) {
241 struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]);
243 if (dinfo->pci.cfg.dev != devlist[tmp])
244 device_printf(cbdev, "devinfo dev mismatch\n");
245 cardbus_device_destroy(dinfo);
246 pci_delete_child(cbdev, devlist[tmp]);
248 POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
249 free(devlist, M_TEMP);
254 cardbus_driver_added(device_t cbdev, driver_t *driver)
260 struct cardbus_devinfo *dinfo;
262 DEVICE_IDENTIFY(driver, cbdev);
263 if (device_get_children(cbdev, &devlist, &numdevs) != 0)
267 * If there are no drivers attached, but there are children,
268 * then power the card up.
270 for (i = 0; i < numdevs; i++) {
272 if (device_get_state(dev) != DS_NOTPRESENT)
275 if (i > 0 && i == numdevs)
276 POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
277 for (i = 0; i < numdevs; i++) {
279 if (device_get_state(dev) != DS_NOTPRESENT)
281 dinfo = device_get_ivars(dev);
282 pci_print_verbose(&dinfo->pci);
284 printf("pci%d:%d:%d:%d: reprobing on driver added\n",
285 dinfo->pci.cfg.domain, dinfo->pci.cfg.bus,
286 dinfo->pci.cfg.slot, dinfo->pci.cfg.func);
287 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
288 if (device_probe_and_attach(dev) != 0)
289 pci_cfg_save(dev, &dinfo->pci, 1);
291 free(devlist, M_TEMP);
294 /************************************************************************/
295 /* Other Bus Methods */
296 /************************************************************************/
299 cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
301 struct cardbus_devinfo *dinfo;
304 dinfo = device_get_ivars(child);
305 cfg = &dinfo->pci.cfg;
308 case PCI_IVAR_ETHADDR:
310 * The generic accessor doesn't deal with failure, so
311 * we set the return value, then return an error.
313 if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
314 *((uint8_t **) result) = dinfo->funce.lan.nid;
317 *((uint8_t **) result) = NULL;
320 return (pci_read_ivar(cbdev, child, which, result));
325 static device_method_t cardbus_methods[] = {
326 /* Device interface */
327 DEVMETHOD(device_probe, cardbus_probe),
328 DEVMETHOD(device_attach, cardbus_attach),
329 DEVMETHOD(device_detach, cardbus_detach),
330 DEVMETHOD(device_suspend, cardbus_suspend),
331 DEVMETHOD(device_resume, cardbus_resume),
334 DEVMETHOD(bus_get_dma_tag, bus_generic_get_dma_tag),
335 DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
336 DEVMETHOD(bus_driver_added, cardbus_driver_added),
339 DEVMETHOD(card_attach_card, cardbus_attach_card),
340 DEVMETHOD(card_detach_card, cardbus_detach_card),
345 DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods,
346 sizeof(struct cardbus_softc), pci_driver);
348 static devclass_t cardbus_devclass;
350 DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
351 MODULE_VERSION(cardbus, 1);