1 /*- 2 * Copyright (c) 2003 M. Warner Losh. All Rights Reserved. 3 * Copyright (c) 2000,2001 Jonathan Chen. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 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> 36 37 #include <sys/bus.h> 38 #include <machine/bus.h> 39 #include <sys/rman.h> 40 #include <machine/resource.h> 41 42 #include <sys/pciio.h> 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pci_private.h> 46 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> 52 53 #include "power_if.h" 54 #include "pcib_if.h" 55 56 /* sysctl vars */ 57 SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters"); 58 59 int cardbus_debug = 0; 60 TUNABLE_INT("hw.cardbus.debug", &cardbus_debug); 61 SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW, 62 &cardbus_debug, 0, 63 "CardBus debug"); 64 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, 69 "CardBus CIS debug"); 70 71 #define DPRINTF(a) if (cardbus_debug) printf a 72 #define DEVPRINTF(x) if (cardbus_debug) device_printf x 73 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(device_t brdev, int b, int s, int f, 79 pcicfgregs *cfg); 80 static void cardbus_driver_added(device_t cbdev, driver_t *driver); 81 static int cardbus_probe(device_t cbdev); 82 static int cardbus_read_ivar(device_t cbdev, device_t child, int which, 83 uintptr_t *result); 84 static void cardbus_release_all_resources(device_t cbdev, 85 struct cardbus_devinfo *dinfo); 86 static int cardbus_write_ivar(device_t cbdev, device_t child, int which, 87 uintptr_t value); 88 89 /************************************************************************/ 90 /* Probe/Attach */ 91 /************************************************************************/ 92 93 static int 94 cardbus_probe(device_t cbdev) 95 { 96 device_set_desc(cbdev, "CardBus bus"); 97 return (0); 98 } 99 100 static int 101 cardbus_attach(device_t cbdev) 102 { 103 struct cardbus_softc *sc = device_get_softc(cbdev); 104 105 sc->sc_dev = cbdev; 106 cardbus_device_create(sc); 107 return (0); 108 } 109 110 static int 111 cardbus_detach(device_t cbdev) 112 { 113 struct cardbus_softc *sc = device_get_softc(cbdev); 114 115 cardbus_detach_card(cbdev); 116 cardbus_device_destroy(sc); 117 return (0); 118 } 119 120 static int 121 cardbus_suspend(device_t self) 122 { 123 124 cardbus_detach_card(self); 125 return (0); 126 } 127 128 static int 129 cardbus_resume(device_t self) 130 { 131 132 return (0); 133 } 134 135 /************************************************************************/ 136 /* Attach/Detach card */ 137 /************************************************************************/ 138 139 static void 140 cardbus_device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg) 141 { 142 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE, 143 pci_get_irq(device_get_parent(brdev)), 1); 144 cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1); 145 146 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1); 147 cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1); 148 149 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1); 150 cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1); 151 152 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1); 153 cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1); 154 155 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1); 156 cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1); 157 } 158 159 static int 160 cardbus_attach_card(device_t cbdev) 161 { 162 device_t brdev = device_get_parent(cbdev); 163 device_t child; 164 int cardattached = 0; 165 int bus, slot, func; 166 int cardbusfunchigh = 0; 167 168 cardbus_detach_card(cbdev); /* detach existing cards */ 169 POWER_ENABLE_SOCKET(brdev, cbdev); 170 bus = pcib_get_bus(cbdev); 171 slot = 0; 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; 175 176 dinfo = (struct cardbus_devinfo *) 177 pci_read_device(brdev, bus, slot, func, 178 sizeof(struct cardbus_devinfo)); 179 if (dinfo == NULL) 180 continue; 181 if (dinfo->pci.cfg.mfdev) 182 cardbusfunchigh = PCI_FUNCMAX; 183 184 cardbus_device_setup_regs(brdev, bus, slot, func, 185 &dinfo->pci.cfg); 186 child = device_add_child(cbdev, NULL, -1); 187 if (child == NULL) { 188 DEVPRINTF((cbdev, "Cannot add child!\n")); 189 pci_freecfg((struct pci_devinfo *)dinfo); 190 continue; 191 } 192 dinfo->pci.cfg.dev = child; 193 resource_list_init(&dinfo->pci.resources); 194 device_set_ivars(child, dinfo); 195 if (cardbus_do_cis(cbdev, child) != 0) 196 DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n")); 197 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0); 198 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci); 199 pci_add_resources(cbdev, child, 1, dinfo->mprefetchable); 200 pci_print_verbose(&dinfo->pci); 201 if (device_probe_and_attach(child) == 0) 202 cardattached++; 203 else 204 pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1); 205 } 206 if (cardattached > 0) 207 return (0); 208 POWER_DISABLE_SOCKET(brdev, cbdev); 209 return (ENOENT); 210 } 211 212 static int 213 cardbus_detach_card(device_t cbdev) 214 { 215 int numdevs; 216 device_t *devlist; 217 int tmp; 218 int err = 0; 219 220 device_get_children(cbdev, &devlist, &numdevs); 221 222 if (numdevs == 0) { 223 free(devlist, M_TEMP); 224 return (ENOENT); 225 } 226 227 for (tmp = 0; tmp < numdevs; tmp++) { 228 struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]); 229 int status = device_get_state(devlist[tmp]); 230 231 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 device_delete_child(cbdev, devlist[tmp]); 237 pci_freecfg((struct pci_devinfo *)dinfo); 238 } 239 POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); 240 free(devlist, M_TEMP); 241 return (err); 242 } 243 244 static void 245 cardbus_driver_added(device_t cbdev, driver_t *driver) 246 { 247 int numdevs; 248 device_t *devlist; 249 device_t dev; 250 int i; 251 struct cardbus_devinfo *dinfo; 252 253 DEVICE_IDENTIFY(driver, cbdev); 254 device_get_children(cbdev, &devlist, &numdevs); 255 /* 256 * If there are no drivers attached, but there are children, 257 * then power the card up. 258 */ 259 for (i = 0; i < numdevs; i++) { 260 dev = devlist[i]; 261 if (device_get_state(dev) != DS_NOTPRESENT) 262 break; 263 } 264 if (i > 0 && i == numdevs) 265 POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev); 266 for (i = 0; i < numdevs; i++) { 267 dev = devlist[i]; 268 if (device_get_state(dev) != DS_NOTPRESENT) 269 continue; 270 dinfo = device_get_ivars(dev); 271 pci_print_verbose(&dinfo->pci); 272 pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci); 273 if (device_probe_and_attach(dev) != 0) 274 pci_cfg_save(dev, &dinfo->pci, 1); 275 } 276 free(devlist, M_TEMP); 277 } 278 279 static void 280 cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo) 281 { 282 struct resource_list_entry *rle; 283 284 /* Free all allocated resources */ 285 STAILQ_FOREACH(rle, &dinfo->pci.resources, link) { 286 if (rle->res) { 287 BUS_RELEASE_RESOURCE(device_get_parent(cbdev), 288 cbdev, rle->type, rle->rid, rle->res); 289 rle->res = NULL; 290 /* 291 * zero out config so the card won't acknowledge 292 * access to the space anymore. XXX doesn't handle 293 * 64-bit bars. 294 */ 295 pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4); 296 } 297 } 298 resource_list_free(&dinfo->pci.resources); 299 } 300 301 /************************************************************************/ 302 /* Other Bus Methods */ 303 /************************************************************************/ 304 305 static int 306 cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result) 307 { 308 struct cardbus_devinfo *dinfo; 309 pcicfgregs *cfg; 310 311 dinfo = device_get_ivars(child); 312 cfg = &dinfo->pci.cfg; 313 314 switch (which) { 315 case PCI_IVAR_ETHADDR: 316 /* 317 * The generic accessor doesn't deal with failure, so 318 * we set the return value, then return an error. 319 */ 320 if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) { 321 *((uint8_t **) result) = dinfo->funce.lan.nid; 322 break; 323 } 324 *((uint8_t **) result) = NULL; 325 return (EINVAL); 326 default: 327 return (pci_read_ivar(cbdev, child, which, result)); 328 } 329 return 0; 330 } 331 332 static int 333 cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value) 334 { 335 return(pci_write_ivar(cbdev, child, which, value)); 336 } 337 338 static device_method_t cardbus_methods[] = { 339 /* Device interface */ 340 DEVMETHOD(device_probe, cardbus_probe), 341 DEVMETHOD(device_attach, cardbus_attach), 342 DEVMETHOD(device_detach, cardbus_detach), 343 DEVMETHOD(device_suspend, cardbus_suspend), 344 DEVMETHOD(device_resume, cardbus_resume), 345 346 /* Bus interface */ 347 DEVMETHOD(bus_read_ivar, cardbus_read_ivar), 348 DEVMETHOD(bus_write_ivar, cardbus_write_ivar), 349 DEVMETHOD(bus_driver_added, cardbus_driver_added), 350 351 /* Card Interface */ 352 DEVMETHOD(card_attach_card, cardbus_attach_card), 353 DEVMETHOD(card_detach_card, cardbus_detach_card), 354 355 {0,0} 356 }; 357 358 DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods, 359 sizeof(struct cardbus_softc), pci_driver); 360 361 static devclass_t cardbus_devclass; 362 363 DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0); 364 MODULE_VERSION(cardbus, 1); 365