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 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in 13 * the documentation and/or other materials provided with the 14 * distribution. 15 * 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 FOR 20 * 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 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.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/pccardvar.h> 51 52 #include "power_if.h" 53 #include "pcib_if.h" 54 55 /* sysctl vars */ 56 SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters"); 57 58 int cardbus_debug = 0; 59 TUNABLE_INT("hw.cardbus.debug", &cardbus_debug); 60 SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW, 61 &cardbus_debug, 0, 62 "CardBus debug"); 63 64 int cardbus_cis_debug = 0; 65 TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug); 66 SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW, 67 &cardbus_cis_debug, 0, 68 "CardBus CIS debug"); 69 70 #define DPRINTF(a) if (cardbus_debug) printf a 71 #define DEVPRINTF(x) if (cardbus_debug) device_printf x 72 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 return 0; 104 } 105 106 static int 107 cardbus_detach(device_t cbdev) 108 { 109 cardbus_detach_card(cbdev); 110 return 0; 111 } 112 113 static int 114 cardbus_suspend(device_t self) 115 { 116 cardbus_detach_card(self); 117 return (0); 118 } 119 120 static int 121 cardbus_resume(device_t self) 122 { 123 return (0); 124 } 125 126 /************************************************************************/ 127 /* Attach/Detach card */ 128 /************************************************************************/ 129 130 static void 131 cardbus_device_setup_regs(device_t brdev, int b, int s, int f, pcicfgregs *cfg) 132 { 133 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_INTLINE, 134 pci_get_irq(device_get_parent(brdev)), 1); 135 cfg->intline = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_INTLINE, 1); 136 137 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 0x08, 1); 138 cfg->cachelnsz = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_CACHELNSZ, 1); 139 140 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 0xa8, 1); 141 cfg->lattimer = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_LATTIMER, 1); 142 143 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MINGNT, 0x14, 1); 144 cfg->mingnt = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MINGNT, 1); 145 146 PCIB_WRITE_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 0x14, 1); 147 cfg->maxlat = PCIB_READ_CONFIG(brdev, b, s, f, PCIR_MAXLAT, 1); 148 } 149 150 static int 151 cardbus_attach_card(device_t cbdev) 152 { 153 device_t brdev = device_get_parent(cbdev); 154 int cardattached = 0; 155 static int curr_bus_number = 2; /* XXX EVILE BAD (see below) */ 156 int bus, slot, func; 157 158 cardbus_detach_card(cbdev); /* detach existing cards */ 159 160 POWER_ENABLE_SOCKET(brdev, cbdev); 161 bus = pcib_get_bus(cbdev); 162 if (bus == 0) { 163 /* 164 * XXX EVILE BAD XXX 165 * Not all BIOSes initialize the secondary bus number properly, 166 * so if the default is bad, we just put one in and hope it 167 * works. 168 */ 169 bus = curr_bus_number; 170 pci_write_config(brdev, PCIR_SECBUS_2, curr_bus_number, 1); 171 pci_write_config(brdev, PCIR_SUBBUS_2, curr_bus_number + 2, 1); 172 curr_bus_number += 3; 173 } 174 /* For each function, set it up and try to attach a driver to it */ 175 for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) { 176 int cardbusfunchigh = 0; 177 for (func = 0; func <= cardbusfunchigh; func++) { 178 struct cardbus_devinfo *dinfo; 179 180 dinfo = (struct cardbus_devinfo *) 181 pci_read_device(brdev, bus, slot, func, 182 sizeof(struct cardbus_devinfo)); 183 if (dinfo == NULL) 184 continue; 185 if (dinfo->pci.cfg.mfdev) 186 cardbusfunchigh = CARDBUS_FUNCMAX; 187 188 cardbus_device_setup_regs(brdev, bus, slot, func, 189 &dinfo->pci.cfg); 190 dinfo->pci.cfg.dev = device_add_child(cbdev, NULL, -1); 191 if (!dinfo->pci.cfg.dev) { 192 DEVPRINTF((cbdev, "Cannot add child!\n")); 193 pci_freecfg((struct pci_devinfo *)dinfo); 194 continue; 195 } 196 resource_list_init(&dinfo->pci.resources); 197 device_set_ivars(dinfo->pci.cfg.dev, dinfo); 198 cardbus_do_cis(cbdev, dinfo->pci.cfg.dev); 199 pci_print_verbose(&dinfo->pci); 200 if (device_probe_and_attach(dinfo->pci.cfg.dev) != 0) 201 cardbus_release_all_resources(cbdev, dinfo); 202 else 203 cardattached++; 204 } 205 } 206 207 if (cardattached > 0) 208 return (0); 209 POWER_DISABLE_SOCKET(brdev, cbdev); 210 return (ENOENT); 211 } 212 213 static int 214 cardbus_detach_card(device_t cbdev) 215 { 216 int numdevs; 217 device_t *devlist; 218 int tmp; 219 int err = 0; 220 221 device_get_children(cbdev, &devlist, &numdevs); 222 223 if (numdevs == 0) { 224 free(devlist, M_TEMP); 225 return (ENOENT); 226 } 227 228 for (tmp = 0; tmp < numdevs; tmp++) { 229 struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]); 230 int status = device_get_state(devlist[tmp]); 231 232 if (dinfo->pci.cfg.dev != devlist[tmp]) 233 device_printf(cbdev, "devinfo dev mismatch\n"); 234 if (status == DS_ATTACHED || status == DS_BUSY) 235 device_detach(devlist[tmp]); 236 cardbus_release_all_resources(cbdev, dinfo); 237 device_delete_child(cbdev, devlist[tmp]); 238 pci_freecfg((struct pci_devinfo *)dinfo); 239 } 240 POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); 241 free(devlist, M_TEMP); 242 return (err); 243 } 244 245 static void 246 cardbus_driver_added(device_t cbdev, driver_t *driver) 247 { 248 int numdevs; 249 device_t *devlist; 250 device_t dev; 251 int i; 252 struct cardbus_devinfo *dinfo; 253 254 DEVICE_IDENTIFY(driver, cbdev); 255 device_get_children(cbdev, &devlist, &numdevs); 256 /* 257 * If there are no drivers attached, but there are children, 258 * then power the card up. 259 */ 260 for (i = 0; i < numdevs; i++) { 261 dev = devlist[i]; 262 if (device_get_state(dev) != DS_NOTPRESENT) 263 break; 264 } 265 if (i > 0 && i == numdevs) 266 POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev); 267 for (i = 0; i < numdevs; i++) { 268 dev = devlist[i]; 269 if (device_get_state(dev) != DS_NOTPRESENT) 270 continue; 271 dinfo = device_get_ivars(dev); 272 pci_print_verbose(&dinfo->pci); 273 resource_list_init(&dinfo->pci.resources); 274 cardbus_do_cis(cbdev, dev); 275 if (device_probe_and_attach(dev) != 0) 276 cardbus_release_all_resources(cbdev, dinfo); 277 } 278 free(devlist, M_TEMP); 279 } 280 281 static void 282 cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo) 283 { 284 struct resource_list_entry *rle; 285 286 /* Free all allocated resources */ 287 SLIST_FOREACH(rle, &dinfo->pci.resources, link) { 288 if (rle->res) { 289 if (rman_get_device(rle->res) != cbdev) 290 device_printf(cbdev, "release_all_resource: " 291 "Resource still owned by child, oops. " 292 "(type=%d, rid=%d, addr=%lx)\n", 293 rle->type, rle->rid, 294 rman_get_start(rle->res)); 295 BUS_RELEASE_RESOURCE(device_get_parent(cbdev), 296 cbdev, rle->type, rle->rid, rle->res); 297 rle->res = NULL; 298 /* 299 * zero out config so the card won't acknowledge 300 * access to the space anymore 301 */ 302 pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4); 303 } 304 } 305 resource_list_free(&dinfo->pci.resources); 306 } 307 308 /************************************************************************/ 309 /* Other Bus Methods */ 310 /************************************************************************/ 311 312 static int 313 cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result) 314 { 315 struct cardbus_devinfo *dinfo; 316 pcicfgregs *cfg; 317 318 dinfo = device_get_ivars(child); 319 cfg = &dinfo->pci.cfg; 320 321 switch (which) { 322 case PCI_IVAR_ETHADDR: 323 /* 324 * The generic accessor doesn't deal with failure, so 325 * we set the return value, then return an error. 326 */ 327 if ((dinfo->fepresent & (1 << TPL_FUNCE_LAN_NID)) == 0) { 328 *((uint8_t **) result) = NULL; 329 return (EINVAL); 330 } 331 *((uint8_t **) result) = dinfo->funce.lan.nid; 332 break; 333 default: 334 return (pci_read_ivar(cbdev, child, which, result)); 335 } 336 return 0; 337 } 338 339 static int 340 cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value) 341 { 342 return(pci_write_ivar(cbdev, child, which, value)); 343 } 344 345 static device_method_t cardbus_methods[] = { 346 /* Device interface */ 347 DEVMETHOD(device_probe, cardbus_probe), 348 DEVMETHOD(device_attach, cardbus_attach), 349 DEVMETHOD(device_detach, cardbus_detach), 350 DEVMETHOD(device_shutdown, bus_generic_shutdown), 351 DEVMETHOD(device_suspend, cardbus_suspend), 352 DEVMETHOD(device_resume, cardbus_resume), 353 354 /* Bus interface */ 355 DEVMETHOD(bus_print_child, pci_print_child), 356 DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch), 357 DEVMETHOD(bus_read_ivar, cardbus_read_ivar), 358 DEVMETHOD(bus_write_ivar, cardbus_write_ivar), 359 DEVMETHOD(bus_driver_added, cardbus_driver_added), 360 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 361 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 362 DEVMETHOD(bus_get_resource_list,pci_get_resource_list), 363 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), 364 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 365 DEVMETHOD(bus_delete_resource, pci_delete_resource), 366 DEVMETHOD(bus_alloc_resource, pci_alloc_resource), 367 DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 368 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 369 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 370 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 371 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 372 DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method), 373 DEVMETHOD(bus_child_location_str, pci_child_location_str_method), 374 375 /* Card Interface */ 376 DEVMETHOD(card_attach_card, cardbus_attach_card), 377 DEVMETHOD(card_detach_card, cardbus_detach_card), 378 DEVMETHOD(card_cis_read, cardbus_cis_read), 379 DEVMETHOD(card_cis_free, cardbus_cis_free), 380 381 /* Cardbus/PCI interface */ 382 DEVMETHOD(pci_read_config, pci_read_config_method), 383 DEVMETHOD(pci_write_config, pci_write_config_method), 384 DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method), 385 DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method), 386 DEVMETHOD(pci_enable_io, pci_enable_io_method), 387 DEVMETHOD(pci_disable_io, pci_disable_io_method), 388 DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method), 389 DEVMETHOD(pci_set_powerstate, pci_set_powerstate_method), 390 391 {0,0} 392 }; 393 394 static driver_t cardbus_driver = { 395 "cardbus", 396 cardbus_methods, 397 0 /* no softc */ 398 }; 399 400 static devclass_t cardbus_devclass; 401 402 DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0); 403 MODULE_VERSION(cardbus, 1); 404