sys/dev/siba/siba_bwn.c

   1 /*-
   2  * Copyright (c) 2009-2010 Weongyo Jeong <weongyo@freebsd.org>
   3  * 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.
  11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
  13  *    redistribution must be conditioned upon including a substantially
  14  *    similar Disclaimer requirement for further binary redistribution.
  15  *
  16  * NO WARRANTY
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
  20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
  22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  27  * THE POSSIBILITY OF SUCH DAMAGES.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*
  34  * Sonics Silicon Backplane front-end for bwn(4).
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/module.h>
  40 #include <sys/kernel.h>
  41 #include <sys/lock.h>
  42 #include <sys/mutex.h>
  43 #include <sys/errno.h>
  44 #include <machine/bus.h>
  45 #include <machine/resource.h>
  46 #include <sys/bus.h>
  47 #include <sys/rman.h>
  48 #include <sys/socket.h>
  49
  50 #include <net/if.h>
  51 #include <net/if_media.h>
  52 #include <net/if_arp.h>
  53
  54 #include <dev/pci/pcivar.h>
  55 #include <dev/pci/pcireg.h>
  56
  57 #include <dev/siba/siba_ids.h>
  58 #include <dev/siba/sibareg.h>
  59 #include <dev/siba/sibavar.h>
  60
  61 /*
  62  * PCI glue.
  63  */
  64
  65 struct siba_bwn_softc {
  66         /* Child driver using MSI. */
  67         device_t                        ssc_msi_child;
  68         struct siba_softc               ssc_siba;
  69 };
  70
  71 #define BS_BAR                          0x10
  72 #define PCI_VENDOR_BROADCOM             0x14e4
  73 #define N(a)                            (sizeof(a) / sizeof(a[0]))
  74
  75 static const struct siba_dev {
  76         uint16_t        vid;
  77         uint16_t        did;
  78         const char      *desc;
  79 } siba_devices[] = {
  80         { PCI_VENDOR_BROADCOM, 0x4301, "Broadcom BCM4301 802.11b Wireless" },
  81         { PCI_VENDOR_BROADCOM, 0x4306, "Unknown" },
  82         { PCI_VENDOR_BROADCOM, 0x4307, "Broadcom BCM4307 802.11b Wireless" },
  83         { PCI_VENDOR_BROADCOM, 0x4311, "Broadcom BCM4311 802.11b/g Wireless" },
  84         { PCI_VENDOR_BROADCOM, 0x4312,
  85           "Broadcom BCM4312 802.11a/b/g Wireless" },
  86         { PCI_VENDOR_BROADCOM, 0x4315, "Broadcom BCM4312 802.11b/g Wireless" },
  87         { PCI_VENDOR_BROADCOM, 0x4318, "Broadcom BCM4318 802.11b/g Wireless" },
  88         { PCI_VENDOR_BROADCOM, 0x4319,
  89           "Broadcom BCM4318 802.11a/b/g Wireless" },
  90         { PCI_VENDOR_BROADCOM, 0x4320, "Broadcom BCM4306 802.11b/g Wireless" },
  91         { PCI_VENDOR_BROADCOM, 0x4321, "Broadcom BCM4306 802.11a Wireless" },
  92         { PCI_VENDOR_BROADCOM, 0x4324,
  93           "Broadcom BCM4309 802.11a/b/g Wireless" },
  94         { PCI_VENDOR_BROADCOM, 0x4325, "Broadcom BCM4306 802.11b/g Wireless" },
  95         { PCI_VENDOR_BROADCOM, 0x4328, "Unknown" },
  96         { PCI_VENDOR_BROADCOM, 0x4329, "Unknown" },
  97         { PCI_VENDOR_BROADCOM, 0x432b, "Unknown" }
  98 };
  99
 100 int             siba_core_attach(struct siba_softc *);
 101 int             siba_core_detach(struct siba_softc *);
 102 int             siba_core_suspend(struct siba_softc *);
 103 int             siba_core_resume(struct siba_softc *);
 104
 105 static int
 106 siba_bwn_probe(device_t dev)
 107 {
 108         int i;
 109         uint16_t did, vid;
 110
 111         did = pci_get_device(dev);
 112         vid = pci_get_vendor(dev);
 113
 114         for (i = 0; i < N(siba_devices); i++) {
 115                 if (siba_devices[i].did == did && siba_devices[i].vid == vid) {
 116                         device_set_desc(dev, siba_devices[i].desc);
 117                         return (BUS_PROBE_DEFAULT);
 118                 }
 119         }
 120         return (ENXIO);
 121 }
 122
 123 static int
 124 siba_bwn_attach(device_t dev)
 125 {
 126         struct siba_bwn_softc *ssc = device_get_softc(dev);
 127         struct siba_softc *siba = &ssc->ssc_siba;
 128
 129         siba->siba_dev = dev;
 130         siba->siba_type = SIBA_TYPE_PCI;
 131
 132         /*
 133          * Enable bus mastering.
 134          */
 135         pci_enable_busmaster(dev);
 136
 137         /*
 138          * Setup memory-mapping of PCI registers.
 139          */
 140         siba->siba_mem_rid = SIBA_PCIR_BAR;
 141         siba->siba_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 142                 &siba->siba_mem_rid, RF_ACTIVE);
 143         if (siba->siba_mem_res == NULL) {
 144                 device_printf(dev, "cannot map register space\n");
 145                 return (ENXIO);
 146         }
 147         siba->siba_mem_bt = rman_get_bustag(siba->siba_mem_res);
 148         siba->siba_mem_bh = rman_get_bushandle(siba->siba_mem_res);
 149
 150         /* Get more PCI information */
 151         siba->siba_pci_did = pci_get_device(dev);
 152         siba->siba_pci_vid = pci_get_vendor(dev);
 153         siba->siba_pci_subvid = pci_get_subvendor(dev);
 154         siba->siba_pci_subdid = pci_get_subdevice(dev);
 155         siba->siba_pci_revid = pci_get_revid(dev);
 156
 157         return (siba_core_attach(siba));
 158 }
 159
 160 static int
 161 siba_bwn_detach(device_t dev)
 162 {
 163         struct siba_bwn_softc *ssc = device_get_softc(dev);
 164         struct siba_softc *siba = &ssc->ssc_siba;
 165
 166         /* check if device was removed */
 167         siba->siba_invalid = !bus_child_present(dev);
 168
 169         pci_disable_busmaster(dev);
 170         bus_generic_detach(dev);
 171         siba_core_detach(siba);
 172
 173         bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, siba->siba_mem_res);
 174
 175         return (0);
 176 }
 177
 178 static int
 179 siba_bwn_shutdown(device_t dev)
 180 {
 181         device_t *devlistp;
 182         int devcnt, error = 0, i;
 183
 184         error = device_get_children(dev, &devlistp, &devcnt);
 185         if (error != 0)
 186                 return (error);
 187
 188         for (i = 0 ; i < devcnt ; i++)
 189                 device_shutdown(devlistp[i]);
 190         free(devlistp, M_TEMP);
 191         return (0);
 192 }
 193
 194 static int
 195 siba_bwn_suspend(device_t dev)
 196 {
 197         struct siba_bwn_softc *ssc = device_get_softc(dev);
 198         struct siba_softc *siba = &ssc->ssc_siba;
 199         device_t *devlistp;
 200         int devcnt, error = 0, i, j;
 201
 202         error = device_get_children(dev, &devlistp, &devcnt);
 203         if (error != 0)
 204                 return (error);
 205
 206         for (i = 0 ; i < devcnt ; i++) {
 207                 error = DEVICE_SUSPEND(devlistp[i]);
 208                 if (error) {
 209                         for (j = 0; j < i; j++)
 210                                 DEVICE_RESUME(devlistp[j]);
 211                         free(devlistp, M_TEMP);
 212                         return (error);
 213                 }
 214         }
 215         free(devlistp, M_TEMP);
 216         return (siba_core_suspend(siba));
 217 }
 218
 219 static int
 220 siba_bwn_resume(device_t dev)
 221 {
 222         struct siba_bwn_softc *ssc = device_get_softc(dev);
 223         struct siba_softc *siba = &ssc->ssc_siba;
 224         device_t *devlistp;
 225         int devcnt, error = 0, i;
 226
 227         error = siba_core_resume(siba);
 228         if (error != 0)
 229                 return (error);
 230
 231         error = device_get_children(dev, &devlistp, &devcnt);
 232         if (error != 0)
 233                 return (error);
 234
 235         for (i = 0 ; i < devcnt ; i++)
 236                 DEVICE_RESUME(devlistp[i]);
 237         free(devlistp, M_TEMP);
 238         return (0);
 239 }
 240
 241 /* proxying to the parent */
 242 static struct resource *
 243 siba_bwn_alloc_resource(device_t dev, device_t child, int type, int *rid,
 244     u_long start, u_long end, u_long count, u_int flags)
 245 {
 246
 247         return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
 248             type, rid, start, end, count, flags));
 249 }
 250
 251 /* proxying to the parent */
 252 static int
 253 siba_bwn_release_resource(device_t dev, device_t child, int type,
 254     int rid, struct resource *r)
 255 {
 256
 257         return (BUS_RELEASE_RESOURCE(device_get_parent(dev), dev, type,
 258             rid, r));
 259 }
 260
 261 /* proxying to the parent */
 262 static int
 263 siba_bwn_setup_intr(device_t dev, device_t child, struct resource *irq,
 264     int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg,
 265     void **cookiep)
 266 {
 267
 268         return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags,
 269             filter, intr, arg, cookiep));
 270 }
 271
 272 /* proxying to the parent */
 273 static int
 274 siba_bwn_teardown_intr(device_t dev, device_t child, struct resource *irq,
 275     void *cookie)
 276 {
 277
 278         return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie));
 279 }
 280
 281 static int
 282 siba_bwn_find_extcap(device_t dev, device_t child, int capability,
 283     int *capreg)
 284 {
 285
 286         return (pci_find_extcap(dev, capability, capreg));
 287 }
 288
 289 static int
 290 siba_bwn_alloc_msi(device_t dev, device_t child, int *count)
 291 {
 292         struct siba_bwn_softc *ssc;
 293         int error;
 294
 295         ssc = device_get_softc(dev);
 296         if (ssc->ssc_msi_child != NULL)
 297                 return (EBUSY);
 298         error = pci_alloc_msi(dev, count);
 299         if (error == 0)
 300                 ssc->ssc_msi_child = child;
 301         return (error);
 302 }
 303
 304 static int
 305 siba_bwn_release_msi(device_t dev, device_t child)
 306 {
 307         struct siba_bwn_softc *ssc;
 308         int error;
 309
 310         ssc = device_get_softc(dev);
 311         if (ssc->ssc_msi_child != child)
 312                 return (ENXIO);
 313         error = pci_release_msi(dev);
 314         if (error == 0)
 315                 ssc->ssc_msi_child = NULL;
 316         return (error);
 317 }
 318
 319 static int
 320 siba_bwn_msi_count(device_t dev, device_t child)
 321 {
 322
 323         return (pci_msi_count(dev));
 324 }
 325
 326 static int
 327 siba_bwn_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 328 {
 329         struct siba_dev_softc *sd;
 330         struct siba_softc *siba;
 331
 332         sd = device_get_ivars(child);
 333         siba = sd->sd_bus;
 334
 335         switch (which) {
 336         case SIBA_IVAR_VENDOR:
 337                 *result = sd->sd_id.sd_vendor;
 338                 break;
 339         case SIBA_IVAR_DEVICE:
 340                 *result = sd->sd_id.sd_device;
 341                 break;
 342         case SIBA_IVAR_REVID:
 343                 *result = sd->sd_id.sd_rev;
 344                 break;
 345         case SIBA_IVAR_PCI_VENDOR:
 346                 *result = siba->siba_pci_vid;
 347                 break;
 348         case SIBA_IVAR_PCI_DEVICE:
 349                 *result = siba->siba_pci_did;
 350                 break;
 351         case SIBA_IVAR_PCI_SUBVENDOR:
 352                 *result = siba->siba_pci_subvid;
 353                 break;
 354         case SIBA_IVAR_PCI_SUBDEVICE:
 355                 *result = siba->siba_pci_subdid;
 356                 break;
 357         case SIBA_IVAR_PCI_REVID:
 358                 *result = siba->siba_pci_revid;
 359                 break;
 360         case SIBA_IVAR_CHIPID:
 361                 *result = siba->siba_chipid;
 362                 break;
 363         case SIBA_IVAR_CHIPREV:
 364                 *result = siba->siba_chiprev;
 365                 break;
 366         case SIBA_IVAR_CHIPPKG:
 367                 *result = siba->siba_chippkg;
 368                 break;
 369         case SIBA_IVAR_TYPE:
 370                 *result = siba->siba_type;
 371                 break;
 372         case SIBA_IVAR_CC_PMUFREQ:
 373                 *result = siba->siba_cc.scc_pmu.freq;
 374                 break;
 375         case SIBA_IVAR_CC_CAPS:
 376                 *result = siba->siba_cc.scc_caps;
 377                 break;
 378         case SIBA_IVAR_CC_POWERDELAY:
 379                 *result = siba->siba_cc.scc_powerup_delay;
 380                 break;
 381         case SIBA_IVAR_PCICORE_REVID:
 382                 *result = siba->siba_pci.spc_dev->sd_id.sd_rev;
 383                 break;
 384         default:
 385                 return (ENOENT);
 386         }
 387
 388         return (0);
 389 }
 390
 391 static device_method_t siba_bwn_methods[] = {
 392         /* Device interface */
 393         DEVMETHOD(device_probe,         siba_bwn_probe),
 394         DEVMETHOD(device_attach,        siba_bwn_attach),
 395         DEVMETHOD(device_detach,        siba_bwn_detach),
 396         DEVMETHOD(device_shutdown,      siba_bwn_shutdown),
 397         DEVMETHOD(device_suspend,       siba_bwn_suspend),
 398         DEVMETHOD(device_resume,        siba_bwn_resume),
 399
 400         /* Bus interface */
 401         DEVMETHOD(bus_alloc_resource,   siba_bwn_alloc_resource),
 402         DEVMETHOD(bus_release_resource, siba_bwn_release_resource),
 403         DEVMETHOD(bus_read_ivar,        siba_bwn_read_ivar),
 404         DEVMETHOD(bus_setup_intr,       siba_bwn_setup_intr),
 405         DEVMETHOD(bus_teardown_intr,    siba_bwn_teardown_intr),
 406
 407         /* PCI interface */
 408         DEVMETHOD(pci_find_extcap,      siba_bwn_find_extcap),
 409         DEVMETHOD(pci_alloc_msi,        siba_bwn_alloc_msi),
 410         DEVMETHOD(pci_release_msi,      siba_bwn_release_msi),
 411         DEVMETHOD(pci_msi_count,        siba_bwn_msi_count),
 412
 413         DEVMETHOD_END
 414 };
 415 static driver_t siba_bwn_driver = {
 416         "siba_bwn",
 417         siba_bwn_methods,
 418         sizeof(struct siba_bwn_softc)
 419 };
 420 static devclass_t siba_bwn_devclass;
 421 DRIVER_MODULE(siba_bwn, pci, siba_bwn_driver, siba_bwn_devclass, 0, 0);
 422 MODULE_VERSION(siba_bwn, 1);