sys/dev/etherswitch/e6000sw/e6000sw.c

   1 /*-
   2  * Copyright (c) 2015 Semihalf
   3  * Copyright (c) 2015 Stormshield
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/types.h>
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/sockio.h>
  35 #include <sys/kernel.h>
  36 #include <sys/kthread.h>
  37 #include <sys/socket.h>
  38 #include <sys/module.h>
  39 #include <sys/errno.h>
  40 #include <sys/bus.h>
  41 #include <sys/conf.h>
  42 #include <sys/uio.h>
  43 #include <sys/fcntl.h>
  44
  45 #include <net/if.h>
  46 #include <net/if_media.h>
  47 #include <net/if_types.h>
  48
  49 #include <machine/bus.h>
  50 #include <machine/resource.h>
  51
  52 #include <arm/mv/mvwin.h>
  53 #include <arm/mv/mvreg.h>
  54 #include <arm/mv/mvvar.h>
  55
  56 #include <dev/etherswitch/etherswitch.h>
  57 #include <dev/mdio/mdio.h>
  58 #include <dev/mii/mii.h>
  59 #include <dev/mii/miivar.h>
  60 #include <dev/mge/if_mgevar.h>
  61
  62 #include <dev/fdt/fdt_common.h>
  63 #include <dev/ofw/ofw_bus.h>
  64 #include <dev/ofw/ofw_bus_subr.h>
  65
  66 #include "e6000swreg.h"
  67 #include "etherswitch_if.h"
  68 #include "miibus_if.h"
  69 #include "mdio_if.h"
  70
  71 MALLOC_DECLARE(M_E6000SW);
  72 MALLOC_DEFINE(M_E6000SW, "e6000sw", "e6000sw switch");
  73
  74 #define E6000SW_LOCK(_sc)                       \
  75             sx_xlock(&(_sc)->sx)
  76 #define E6000SW_UNLOCK(_sc)                     \
  77             sx_unlock(&(_sc)->sx)
  78 #define E6000SW_LOCK_ASSERT(_sc, _what)         \
  79             sx_assert(&(_sc)->sx, (_what))
  80 #define E6000SW_TRYLOCK(_sc)                    \
  81             sx_tryxlock(&(_sc)->sx)
  82
  83 typedef struct e6000sw_softc {
  84         device_t                dev;
  85         phandle_t               node;
  86
  87         struct sx               sx;
  88         struct ifnet            *ifp[E6000SW_MAX_PORTS];
  89         char                    *ifname[E6000SW_MAX_PORTS];
  90         device_t                miibus[E6000SW_MAX_PORTS];
  91         struct mii_data         *mii[E6000SW_MAX_PORTS];
  92         struct callout          tick_callout;
  93
  94         uint32_t                cpuports_mask;
  95         uint32_t                fixed_mask;
  96         int                     sw_addr;
  97         int                     num_ports;
  98         boolean_t               multi_chip;
  99
 100         int                     vid[E6000SW_NUM_VGROUPS];
 101         int                     members[E6000SW_NUM_VGROUPS];
 102         int                     vgroup[E6000SW_MAX_PORTS];
 103 } e6000sw_softc_t;
 104
 105 static etherswitch_info_t etherswitch_info = {
 106         .es_nports =            0,
 107         .es_nvlangroups =       E6000SW_NUM_VGROUPS,
 108         .es_name =              "Marvell 6000 series switch"
 109 };
 110
 111 static void e6000sw_identify(driver_t *driver, device_t parent);
 112 static int e6000sw_probe(device_t dev);
 113 static int e6000sw_attach(device_t dev);
 114 static int e6000sw_detach(device_t dev);
 115 static int e6000sw_readphy(device_t dev, int phy, int reg);
 116 static int e6000sw_writephy(device_t dev, int phy, int reg, int data);
 117 static etherswitch_info_t* e6000sw_getinfo(device_t dev);
 118 static void e6000sw_lock(device_t dev);
 119 static void e6000sw_unlock(device_t dev);
 120 static int e6000sw_getport(device_t dev, etherswitch_port_t *p);
 121 static int e6000sw_setport(device_t dev, etherswitch_port_t *p);
 122 static int e6000sw_readreg_wrapper(device_t dev, int addr_reg);
 123 static int e6000sw_writereg_wrapper(device_t dev, int addr_reg, int val);
 124 static int e6000sw_readphy_wrapper(device_t dev, int phy, int reg);
 125 static int e6000sw_writephy_wrapper(device_t dev, int phy, int reg, int data);
 126 static int e6000sw_getvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg);
 127 static int e6000sw_setvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg);
 128 static int e6000sw_setvgroup(device_t dev, etherswitch_vlangroup_t *vg);
 129 static int e6000sw_getvgroup(device_t dev, etherswitch_vlangroup_t *vg);
 130 static void e6000sw_setup(device_t dev, e6000sw_softc_t *sc);
 131 static void e6000sw_port_vlan_conf(e6000sw_softc_t *sc);
 132 static void e6000sw_tick(void *arg);
 133 static void e6000sw_set_atustat(device_t dev, e6000sw_softc_t *sc, int bin,
 134     int flag);
 135 static int e6000sw_atu_flush(device_t dev, e6000sw_softc_t *sc, int flag);
 136 static __inline void e6000sw_writereg(e6000sw_softc_t *sc, int addr, int reg,
 137     int val);
 138 static __inline uint32_t e6000sw_readreg(e6000sw_softc_t *sc, int addr,
 139     int reg);
 140 static int e6000sw_ifmedia_upd(struct ifnet *ifp);
 141 static void e6000sw_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
 142 static int e6000sw_atu_mac_table(device_t dev, e6000sw_softc_t *sc, struct
 143     atu_opt *atu, int flag);
 144 static int e6000sw_get_pvid(e6000sw_softc_t *sc, int port, int *pvid);
 145 static int e6000sw_set_pvid(e6000sw_softc_t *sc, int port, int pvid);
 146 static __inline int e6000sw_is_cpuport(e6000sw_softc_t *sc, int port);
 147 static __inline int e6000sw_is_fixedport(e6000sw_softc_t *sc, int port);
 148 static __inline int e6000sw_is_phyport(e6000sw_softc_t *sc, int port);
 149 static __inline struct mii_data *e6000sw_miiforphy(e6000sw_softc_t *sc,
 150     unsigned int phy);
 151
 152 static struct proc *e6000sw_kproc;
 153
 154 static device_method_t e6000sw_methods[] = {
 155         /* device interface */
 156         DEVMETHOD(device_identify,              e6000sw_identify),
 157         DEVMETHOD(device_probe,                 e6000sw_probe),
 158         DEVMETHOD(device_attach,                e6000sw_attach),
 159         DEVMETHOD(device_detach,                e6000sw_detach),
 160
 161         /* bus interface */
 162         DEVMETHOD(bus_add_child,                device_add_child_ordered),
 163
 164         /* mii interface */
 165         DEVMETHOD(miibus_readreg,               e6000sw_readphy),
 166         DEVMETHOD(miibus_writereg,              e6000sw_writephy),
 167
 168         /* etherswitch interface */
 169         DEVMETHOD(etherswitch_getinfo,          e6000sw_getinfo),
 170         DEVMETHOD(etherswitch_lock,             e6000sw_lock),
 171         DEVMETHOD(etherswitch_unlock,           e6000sw_unlock),
 172         DEVMETHOD(etherswitch_getport,          e6000sw_getport),
 173         DEVMETHOD(etherswitch_setport,          e6000sw_setport),
 174         DEVMETHOD(etherswitch_readreg,          e6000sw_readreg_wrapper),
 175         DEVMETHOD(etherswitch_writereg,         e6000sw_writereg_wrapper),
 176         DEVMETHOD(etherswitch_readphyreg,       e6000sw_readphy_wrapper),
 177         DEVMETHOD(etherswitch_writephyreg,      e6000sw_writephy_wrapper),
 178         DEVMETHOD(etherswitch_setvgroup,        e6000sw_setvgroup_wrapper),
 179         DEVMETHOD(etherswitch_getvgroup,        e6000sw_getvgroup_wrapper),
 180
 181         DEVMETHOD_END
 182 };
 183
 184 static devclass_t e6000sw_devclass;
 185
 186 DEFINE_CLASS_0(e6000sw, e6000sw_driver, e6000sw_methods,
 187     sizeof(e6000sw_softc_t));
 188
 189 DRIVER_MODULE(e6000sw, mdio, e6000sw_driver, e6000sw_devclass, 0, 0);
 190 DRIVER_MODULE(etherswitch, e6000sw, etherswitch_driver, etherswitch_devclass, 0,
 191     0);
 192 DRIVER_MODULE(miibus, e6000sw, miibus_driver, miibus_devclass, 0, 0);
 193 MODULE_DEPEND(e6000sw, mdio, 1, 1, 1);
 194
 195 #define SMI_CMD 0
 196 #define SMI_CMD_BUSY    (1<<15)
 197 #define SMI_CMD_OP_READ ((2<<10)|SMI_CMD_BUSY|(1<<12))
 198 #define SMI_CMD_OP_WRITE        ((1<<10)|SMI_CMD_BUSY|(1<<12))
 199 #define SMI_DATA        1
 200
 201 #define MDIO_READ(dev, addr, reg) MDIO_READREG(device_get_parent(dev), (addr), (reg))
 202 #define MDIO_WRITE(dev, addr, reg, val) MDIO_WRITEREG(device_get_parent(dev), (addr), (reg), (val))
 203 static void
 204 e6000sw_identify(driver_t *driver, device_t parent)
 205 {
 206
 207         if (device_find_child(parent, "e6000sw", -1) == NULL)
 208                 BUS_ADD_CHILD(parent, 0, "e6000sw", -1);
 209 }
 210
 211 static int
 212 e6000sw_probe(device_t dev)
 213 {
 214         e6000sw_softc_t *sc;
 215         const char *description;
 216         unsigned int id;
 217         phandle_t dsa_node, switch_node;
 218
 219         dsa_node = fdt_find_compatible(OF_finddevice("/"),
 220             "marvell,dsa", 0);
 221         switch_node = OF_child(dsa_node);
 222
 223         if (switch_node == 0)
 224                 return (ENXIO);
 225
 226         sc = device_get_softc(dev);
 227         bzero(sc, sizeof(e6000sw_softc_t));
 228         sc->dev = dev;
 229         sc->node = switch_node;
 230
 231         if (OF_getencprop(sc->node, "reg", &sc->sw_addr,
 232             sizeof(sc->sw_addr)) < 0)
 233                 return (ENXIO);
 234         if (sc->sw_addr != 0 && (sc->sw_addr % 2) == 0)
 235                 sc->multi_chip = true;
 236
 237         /* Lock is necessary due to assertions. */
 238         sx_init(&sc->sx, "e6000sw");
 239         E6000SW_LOCK(sc);
 240
 241         id = e6000sw_readreg(sc, REG_PORT(0), SWITCH_ID);
 242
 243         switch (id & 0xfff0) {
 244         case 0x3520:
 245                 description = "Marvell 88E6352";
 246                 break;
 247         case 0x1720:
 248                 description = "Marvell 88E6172";
 249                 break;
 250         case 0x1760:
 251                 description = "Marvell 88E6176";
 252                 break;
 253         default:
 254                 E6000SW_UNLOCK(sc);
 255                 sx_destroy(&sc->sx);
 256                 device_printf(dev, "Unrecognized device, id 0x%x.\n", id);
 257                 return (ENXIO);
 258         }
 259
 260         device_set_desc(dev, description);
 261
 262         E6000SW_UNLOCK(sc);
 263
 264         return (BUS_PROBE_DEFAULT);
 265 }
 266
 267 static int
 268 e6000sw_parse_child_fdt(device_t dev, phandle_t child, uint32_t *fixed_mask,
 269     uint32_t *cpu_mask, int *pport, int *pvlangroup)
 270 {
 271         char portlabel[100];
 272         uint32_t port, vlangroup;
 273         boolean_t fixed_link;
 274
 275         if (fixed_mask == NULL || cpu_mask == NULL || pport == NULL)
 276                 return (ENXIO);
 277
 278         OF_getprop(child, "label", (void *)portlabel, 100);
 279         OF_getencprop(child, "reg", (void *)&port, sizeof(port));
 280
 281         if (OF_getencprop(child, "vlangroup", (void *)&vlangroup,
 282             sizeof(vlangroup)) > 0) {
 283                 if (vlangroup >= E6000SW_NUM_VGROUPS)
 284                         return (ENXIO);
 285                 *pvlangroup = vlangroup;
 286         } else {
 287                 *pvlangroup = -1;
 288         }
 289
 290         if (port >= E6000SW_MAX_PORTS)
 291                 return (ENXIO);
 292         *pport = port;
 293
 294         if (strncmp(portlabel, "cpu", 3) == 0) {
 295                 device_printf(dev, "CPU port at %d\n", port);
 296                 *cpu_mask |= (1 << port);
 297                 return (0);
 298         }
 299
 300         fixed_link = OF_child(child);
 301         if (fixed_link) {
 302                 *fixed_mask |= (1 << port);
 303                 device_printf(dev, "fixed port at %d\n", port);
 304         } else {
 305                 device_printf(dev, "PHY at %d\n", port);
 306         }
 307
 308         return (0);
 309 }
 310
 311 static int
 312 e6000sw_init_interface(e6000sw_softc_t *sc, int port)
 313 {
 314         char name[IFNAMSIZ];
 315
 316         snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->dev));
 317
 318         sc->ifp[port] = if_alloc(IFT_ETHER);
 319         if (sc->ifp[port] == NULL)
 320                 return (ENOMEM);
 321         sc->ifp[port]->if_softc = sc;
 322         sc->ifp[port]->if_flags |= IFF_UP | IFF_BROADCAST |
 323             IFF_DRV_RUNNING | IFF_SIMPLEX;
 324         sc->ifname[port] = malloc(strlen(name) + 1, M_E6000SW, M_NOWAIT);
 325         if (sc->ifname[port] == NULL) {
 326                 if_free(sc->ifp[port]);
 327                 return (ENOMEM);
 328         }
 329         memcpy(sc->ifname[port], name, strlen(name) + 1);
 330         if_initname(sc->ifp[port], sc->ifname[port], port);
 331
 332         return (0);
 333 }
 334
 335 static int
 336 e6000sw_attach_miibus(e6000sw_softc_t *sc, int port)
 337 {
 338         int err;
 339
 340         err = mii_attach(sc->dev, &sc->miibus[port], sc->ifp[port],
 341             e6000sw_ifmedia_upd, e6000sw_ifmedia_sts, BMSR_DEFCAPMASK,
 342             port, MII_OFFSET_ANY, 0);
 343         if (err != 0)
 344                 return (err);
 345
 346         sc->mii[port] = device_get_softc(sc->miibus[port]);
 347         return (0);
 348 }
 349
 350 static int
 351 e6000sw_attach(device_t dev)
 352 {
 353         e6000sw_softc_t *sc;
 354         phandle_t child;
 355         int err, port, vlangroup;
 356         int member_ports[E6000SW_NUM_VGROUPS];
 357         etherswitch_vlangroup_t vg;
 358
 359         err = 0;
 360         sc = device_get_softc(dev);
 361
 362         if (sc->multi_chip)
 363                 device_printf(dev, "multi-chip addressing mode\n");
 364         else
 365                 device_printf(dev, "single-chip addressing mode\n");
 366
 367         E6000SW_LOCK(sc);
 368         e6000sw_setup(dev, sc);
 369         bzero(member_ports, sizeof(member_ports));
 370
 371         for (child = OF_child(sc->node); child != 0; child = OF_peer(child)) {
 372                 err = e6000sw_parse_child_fdt(dev, child, &sc->fixed_mask,
 373                     &sc->cpuports_mask, &port, &vlangroup);
 374                 if (err != 0) {
 375                         device_printf(sc->dev, "failed to parse DTS\n");
 376                         goto out_fail;
 377                 }
 378
 379                 if (vlangroup != -1)
 380                         member_ports[vlangroup] |= (1 << port);
 381
 382                 sc->num_ports++;
 383
 384                 err = e6000sw_init_interface(sc, port);
 385                 if (err != 0) {
 386                         device_printf(sc->dev, "failed to init interface\n");
 387                         goto out_fail;
 388                 }
 389
 390                 /* Don't attach miibus at CPU/fixed ports */
 391                 if (!e6000sw_is_phyport(sc, port))
 392                         continue;
 393
 394                 err = e6000sw_attach_miibus(sc, port);
 395                 if (err != 0) {
 396                         device_printf(sc->dev, "failed to attach miibus\n");
 397                         goto out_fail;
 398                 }
 399         }
 400
 401         etherswitch_info.es_nports = sc->num_ports;
 402         for (port = 0; port < sc->num_ports; port++)
 403                 sc->vgroup[port] = E6000SW_PORT_NO_VGROUP;
 404
 405         /* Set VLAN configuration */
 406         e6000sw_port_vlan_conf(sc);
 407
 408         /* Set vlangroups */
 409         for (vlangroup = 0; vlangroup < E6000SW_NUM_VGROUPS; vlangroup++)
 410                 if (member_ports[vlangroup] != 0) {
 411                         vg.es_vlangroup = vg.es_vid = vlangroup;
 412                         vg.es_member_ports = vg.es_untagged_ports =
 413                             member_ports[vlangroup];
 414                         e6000sw_setvgroup(dev, &vg);
 415                 }
 416
 417         E6000SW_UNLOCK(sc);
 418
 419         bus_generic_probe(dev);
 420         bus_generic_attach(dev);
 421
 422         kproc_create(e6000sw_tick, sc, &e6000sw_kproc, 0, 0,
 423             "e6000sw tick kproc");
 424
 425         return (0);
 426
 427 out_fail:
 428         E6000SW_UNLOCK(sc);
 429         e6000sw_detach(dev);
 430
 431         return (err);
 432 }
 433
 434 static __inline void
 435 e6000sw_poll_done(e6000sw_softc_t *sc)
 436 {
 437
 438         while (e6000sw_readreg(sc, REG_GLOBAL2, PHY_CMD) &
 439             (1 << PHY_CMD_SMI_BUSY))
 440                 continue;
 441 }
 442
 443 /*
 444  * PHY registers are paged. Put page index in reg 22 (accessible from every
 445  * page), then access specific register.
 446  */
 447 static int
 448 e6000sw_readphy(device_t dev, int phy, int reg)
 449 {
 450         e6000sw_softc_t *sc;
 451         uint32_t val;
 452
 453         sc = device_get_softc(dev);
 454         val = 0;
 455
 456         if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
 457                 device_printf(dev, "Wrong register address.\n");
 458                 return (EINVAL);
 459         }
 460
 461         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 462
 463         e6000sw_poll_done(sc);
 464         val |= 1 << PHY_CMD_SMI_BUSY;
 465         val |= PHY_CMD_MODE_MDIO << PHY_CMD_MODE;
 466         val |= PHY_CMD_OPCODE_READ << PHY_CMD_OPCODE;
 467         val |= (reg << PHY_CMD_REG_ADDR) & PHY_CMD_REG_ADDR_MASK;
 468         val |= (phy << PHY_CMD_DEV_ADDR) & PHY_CMD_DEV_ADDR_MASK;
 469         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG, val);
 470         e6000sw_poll_done(sc);
 471         val = e6000sw_readreg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG)
 472                 & PHY_DATA_MASK;
 473
 474         return (val);
 475 }
 476
 477 static int
 478 e6000sw_writephy(device_t dev, int phy, int reg, int data)
 479 {
 480         e6000sw_softc_t *sc;
 481         uint32_t val;
 482
 483         sc = device_get_softc(dev);
 484         val = 0;
 485
 486         if (!e6000sw_is_phyport(sc, phy) || reg >= E6000SW_NUM_PHY_REGS) {
 487                 device_printf(dev, "Wrong register address.\n");
 488                 return (EINVAL);
 489         }
 490
 491         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 492
 493         e6000sw_poll_done(sc);
 494         val |= PHY_CMD_MODE_MDIO << PHY_CMD_MODE;
 495         val |= 1 << PHY_CMD_SMI_BUSY;
 496         val |= PHY_CMD_OPCODE_WRITE << PHY_CMD_OPCODE;
 497         val |= (reg << PHY_CMD_REG_ADDR) & PHY_CMD_REG_ADDR_MASK;
 498         val |= (phy << PHY_CMD_DEV_ADDR) & PHY_CMD_DEV_ADDR_MASK;
 499         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_DATA_REG,
 500                          data & PHY_DATA_MASK);
 501         e6000sw_writereg(sc, REG_GLOBAL2, SMI_PHY_CMD_REG, val);
 502         e6000sw_poll_done(sc);
 503
 504         return (0);
 505 }
 506
 507 static int
 508 e6000sw_detach(device_t dev)
 509 {
 510         int phy;
 511         e6000sw_softc_t *sc;
 512
 513         sc = device_get_softc(dev);
 514         bus_generic_detach(dev);
 515         sx_destroy(&sc->sx);
 516         for (phy = 0; phy < sc->num_ports; phy++) {
 517                 if (sc->miibus[phy] != NULL)
 518                         device_delete_child(dev, sc->miibus[phy]);
 519                 if (sc->ifp[phy] != NULL)
 520                         if_free(sc->ifp[phy]);
 521                 if (sc->ifname[phy] != NULL)
 522                         free(sc->ifname[phy], M_E6000SW);
 523         }
 524
 525         return (0);
 526 }
 527
 528 static etherswitch_info_t*
 529 e6000sw_getinfo(device_t dev)
 530 {
 531
 532         return (&etherswitch_info);
 533 }
 534
 535 static void
 536 e6000sw_lock(device_t dev)
 537 {
 538         struct e6000sw_softc *sc;
 539
 540         sc = device_get_softc(dev);
 541
 542         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 543         E6000SW_LOCK(sc);
 544 }
 545
 546 static void
 547 e6000sw_unlock(device_t dev)
 548 {
 549         struct e6000sw_softc *sc;
 550
 551         sc = device_get_softc(dev);
 552
 553         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 554         E6000SW_UNLOCK(sc);
 555 }
 556
 557 static int
 558 e6000sw_getport(device_t dev, etherswitch_port_t *p)
 559 {
 560         struct mii_data *mii;
 561         int err;
 562         struct ifmediareq *ifmr;
 563
 564         err = 0;
 565         e6000sw_softc_t *sc = device_get_softc(dev);
 566         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 567
 568         E6000SW_LOCK(sc);
 569
 570         if (p->es_port >= sc->num_ports ||
 571             p->es_port < 0) {
 572                 err = EINVAL;
 573                 goto out;
 574         }
 575
 576         e6000sw_get_pvid(sc, p->es_port, &p->es_pvid);
 577
 578         if (e6000sw_is_cpuport(sc, p->es_port)) {
 579                 p->es_flags |= ETHERSWITCH_PORT_CPU;
 580                 ifmr = &p->es_ifmr;
 581                 ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
 582                 ifmr->ifm_count = 0;
 583                 ifmr->ifm_current = ifmr->ifm_active =
 584                     IFM_ETHER | IFM_1000_T | IFM_FDX;
 585                 ifmr->ifm_mask = 0;
 586         } else if (e6000sw_is_fixedport(sc, p->es_port)) {
 587                 ifmr = &p->es_ifmr;
 588                 ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
 589                 ifmr->ifm_count = 0;
 590                 ifmr->ifm_current = ifmr->ifm_active =
 591                     IFM_ETHER | IFM_1000_T | IFM_FDX;
 592                 ifmr->ifm_mask = 0;
 593         } else {
 594                 mii = e6000sw_miiforphy(sc, p->es_port);
 595                 err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
 596                     &mii->mii_media, SIOCGIFMEDIA);
 597         }
 598
 599 out:
 600         E6000SW_UNLOCK(sc);
 601         return (err);
 602 }
 603
 604 static int
 605 e6000sw_setport(device_t dev, etherswitch_port_t *p)
 606 {
 607         e6000sw_softc_t *sc;
 608         int err;
 609         struct mii_data *mii;
 610
 611         err = 0;
 612         sc = device_get_softc(dev);
 613         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 614
 615         E6000SW_LOCK(sc);
 616
 617         if (p->es_port >= sc->num_ports ||
 618             p->es_port < 0) {
 619                 err = EINVAL;
 620                 goto out;
 621         }
 622
 623         if (p->es_pvid != 0)
 624                 e6000sw_set_pvid(sc, p->es_port, p->es_pvid);
 625         if (!e6000sw_is_cpuport(sc, p->es_port)) {
 626                 mii = e6000sw_miiforphy(sc, p->es_port);
 627                 err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr, &mii->mii_media,
 628                     SIOCSIFMEDIA);
 629         }
 630
 631 out:
 632         E6000SW_UNLOCK(sc);
 633         return (err);
 634 }
 635
 636 /*
 637  * Registers in this switch are divided into sections, specified in
 638  * documentation. So as to access any of them, section index and reg index
 639  * is necessary. etherswitchcfg uses only one variable, so indexes were
 640  * compressed into addr_reg: 32 * section_index + reg_index.
 641  */
 642 static int
 643 e6000sw_readreg_wrapper(device_t dev, int addr_reg)
 644 {
 645
 646         if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
 647             (addr_reg < (REG_PORT(0) * 32))) {
 648                 device_printf(dev, "Wrong register address.\n");
 649                 return (EINVAL);
 650         }
 651
 652         return (e6000sw_readreg(device_get_softc(dev), addr_reg / 32,
 653             addr_reg % 32));
 654 }
 655
 656 static int
 657 e6000sw_writereg_wrapper(device_t dev, int addr_reg, int val)
 658 {
 659
 660         if ((addr_reg > (REG_GLOBAL2 * 32 + REG_NUM_MAX)) ||
 661             (addr_reg < (REG_PORT(0) * 32))) {
 662                 device_printf(dev, "Wrong register address.\n");
 663                 return (EINVAL);
 664         }
 665         e6000sw_writereg(device_get_softc(dev), addr_reg / 5,
 666             addr_reg % 32, val);
 667
 668         return (0);
 669 }
 670
 671 /*
 672  * These wrappers are necessary because PHY accesses from etherswitchcfg
 673  * need to be synchronized with locks, while miibus PHY accesses do not.
 674  */
 675 static int
 676 e6000sw_readphy_wrapper(device_t dev, int phy, int reg)
 677 {
 678         e6000sw_softc_t *sc;
 679         int ret;
 680
 681         sc = device_get_softc(dev);
 682         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 683
 684         E6000SW_LOCK(sc);
 685         ret = e6000sw_readphy(dev, phy, reg);
 686         E6000SW_UNLOCK(sc);
 687
 688         return (ret);
 689 }
 690
 691 static int
 692 e6000sw_writephy_wrapper(device_t dev, int phy, int reg, int data)
 693 {
 694         e6000sw_softc_t *sc;
 695         int ret;
 696
 697         sc = device_get_softc(dev);
 698         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 699
 700         E6000SW_LOCK(sc);
 701         ret = e6000sw_writephy(dev, phy, reg, data);
 702         E6000SW_UNLOCK(sc);
 703
 704         return (ret);
 705 }
 706
 707 /*
 708  * setvgroup/getvgroup called from etherswitchfcg need to be locked,
 709  * while internal calls do not.
 710  */
 711 static int
 712 e6000sw_setvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
 713 {
 714         e6000sw_softc_t *sc;
 715         int ret;
 716
 717         sc = device_get_softc(dev);
 718         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 719
 720         E6000SW_LOCK(sc);
 721         ret = e6000sw_setvgroup(dev, vg);
 722         E6000SW_UNLOCK(sc);
 723
 724         return (ret);
 725 }
 726
 727 static int
 728 e6000sw_getvgroup_wrapper(device_t dev, etherswitch_vlangroup_t *vg)
 729 {
 730         e6000sw_softc_t *sc;
 731         int ret;
 732
 733         sc = device_get_softc(dev);
 734         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 735
 736         E6000SW_LOCK(sc);
 737         ret = e6000sw_getvgroup(dev, vg);
 738         E6000SW_UNLOCK(sc);
 739
 740         return (ret);
 741 }
 742
 743 static __inline void
 744 e6000sw_flush_port(e6000sw_softc_t *sc, int port)
 745 {
 746         uint32_t reg;
 747
 748         reg = e6000sw_readreg(sc, REG_PORT(port),
 749             PORT_VLAN_MAP);
 750         reg &= ~PORT_VLAN_MAP_TABLE_MASK;
 751         reg &= ~PORT_VLAN_MAP_FID_MASK;
 752         e6000sw_writereg(sc, REG_PORT(port),
 753             PORT_VLAN_MAP, reg);
 754         if (sc->vgroup[port] != E6000SW_PORT_NO_VGROUP) {
 755                 /*
 756                  * If port belonged somewhere, owner-group
 757                  * should have its entry removed.
 758                  */
 759                 sc->members[sc->vgroup[port]] &= ~(1 << port);
 760                 sc->vgroup[port] = E6000SW_PORT_NO_VGROUP;
 761         }
 762 }
 763
 764 static __inline void
 765 e6000sw_port_assign_vgroup(e6000sw_softc_t *sc, int port, int fid, int vgroup,
 766     int members)
 767 {
 768         uint32_t reg;
 769
 770         reg = e6000sw_readreg(sc, REG_PORT(port),
 771             PORT_VLAN_MAP);
 772         reg &= ~PORT_VLAN_MAP_TABLE_MASK;
 773         reg &= ~PORT_VLAN_MAP_FID_MASK;
 774         reg |= members & ~(1 << port);
 775         reg |= (fid << PORT_VLAN_MAP_FID) & PORT_VLAN_MAP_FID_MASK;
 776         e6000sw_writereg(sc, REG_PORT(port), PORT_VLAN_MAP,
 777             reg);
 778         sc->vgroup[port] = vgroup;
 779 }
 780
 781 static int
 782 e6000sw_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
 783 {
 784         e6000sw_softc_t *sc;
 785         int port, fid;
 786
 787         sc = device_get_softc(dev);
 788         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 789
 790         if (vg->es_vlangroup >= E6000SW_NUM_VGROUPS)
 791                 return (EINVAL);
 792         if (vg->es_member_ports != vg->es_untagged_ports) {
 793                 device_printf(dev, "Tagged ports not supported.\n");
 794                 return (EINVAL);
 795         }
 796
 797         vg->es_untagged_ports &= PORT_VLAN_MAP_TABLE_MASK;
 798         fid = vg->es_vlangroup + 1;
 799         for (port = 0; port < sc->num_ports; port++) {
 800                 if ((sc->members[vg->es_vlangroup] & (1 << port)) ||
 801                     (vg->es_untagged_ports & (1 << port)))
 802                         e6000sw_flush_port(sc, port);
 803                 if (vg->es_untagged_ports & (1 << port))
 804                         e6000sw_port_assign_vgroup(sc, port, fid,
 805                             vg->es_vlangroup, vg->es_untagged_ports);
 806         }
 807         sc->vid[vg->es_vlangroup] = vg->es_vid;
 808         sc->members[vg->es_vlangroup] = vg->es_untagged_ports;
 809
 810         return (0);
 811 }
 812
 813 static int
 814 e6000sw_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
 815 {
 816         e6000sw_softc_t *sc;
 817
 818         sc = device_get_softc(dev);
 819         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 820
 821         if (vg->es_vlangroup >= E6000SW_NUM_VGROUPS)
 822                 return (EINVAL);
 823         vg->es_untagged_ports = vg->es_member_ports =
 824             sc->members[vg->es_vlangroup];
 825         vg->es_vid = ETHERSWITCH_VID_VALID;
 826
 827         return (0);
 828 }
 829
 830 static __inline struct mii_data*
 831 e6000sw_miiforphy(e6000sw_softc_t *sc, unsigned int phy)
 832 {
 833
 834         if (!e6000sw_is_phyport(sc, phy))
 835                 return (NULL);
 836
 837         return (device_get_softc(sc->miibus[phy]));
 838 }
 839
 840 static int
 841 e6000sw_ifmedia_upd(struct ifnet *ifp)
 842 {
 843         e6000sw_softc_t *sc;
 844         struct mii_data *mii;
 845
 846         sc = ifp->if_softc;
 847         mii = e6000sw_miiforphy(sc, ifp->if_dunit);
 848         if (mii == NULL)
 849                 return (ENXIO);
 850         mii_mediachg(mii);
 851
 852         return (0);
 853 }
 854
 855 static void
 856 e6000sw_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
 857 {
 858         e6000sw_softc_t *sc;
 859         struct mii_data *mii;
 860
 861         sc = ifp->if_softc;
 862         mii = e6000sw_miiforphy(sc, ifp->if_dunit);
 863
 864         if (mii == NULL)
 865                 return;
 866
 867         mii_pollstat(mii);
 868         ifmr->ifm_active = mii->mii_media_active;
 869         ifmr->ifm_status = mii->mii_media_status;
 870 }
 871
 872
 873 static int
 874 e6000sw_smi_waitready(e6000sw_softc_t *sc, int phy)
 875 {
 876         int i;
 877
 878         for (i = 0; i < E6000SW_SMI_TIMEOUT; i++) {
 879                 if ((MDIO_READ(sc->dev, phy, SMI_CMD)
 880                      & SMI_CMD_BUSY) == 0)
 881                         return 0;
 882         }
 883
 884         return 1;
 885 }
 886
 887 static __inline uint32_t
 888 e6000sw_readreg(e6000sw_softc_t *sc, int addr, int reg)
 889 {
 890
 891         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 892
 893         if (!sc->multi_chip)
 894                 return (MDIO_READ(sc->dev, addr, reg) & 0xffff);
 895
 896         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
 897                 printf("e6000sw: readreg timeout\n");
 898                 return (0xffff);
 899         }
 900         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD, SMI_CMD_OP_READ |
 901                    (addr << 5) | reg);
 902         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
 903                 printf("e6000sw: readreg timeout\n");
 904                 return (0xffff);
 905         }
 906
 907         return (MDIO_READ(sc->dev, sc->sw_addr, SMI_DATA) & 0xffff);
 908 }
 909
 910 static __inline void
 911 e6000sw_writereg(e6000sw_softc_t *sc, int addr, int reg, int val)
 912 {
 913
 914         E6000SW_LOCK_ASSERT(sc, SA_XLOCKED);
 915
 916         if (!sc->multi_chip) {
 917                 MDIO_WRITE(sc->dev, addr, reg, val);
 918                 return;
 919         }
 920
 921         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
 922                 printf("e6000sw: readreg timeout\n");
 923                 return;
 924         }
 925         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_DATA, val);
 926         MDIO_WRITE(sc->dev, sc->sw_addr, SMI_CMD, SMI_CMD_OP_WRITE |
 927                    (addr << 5) | reg);
 928         if (e6000sw_smi_waitready(sc, sc->sw_addr)) {
 929                 printf("e6000sw: readreg timeout\n");
 930                 return;
 931         }
 932
 933         return;
 934 }
 935
 936 static __inline int
 937 e6000sw_is_cpuport(e6000sw_softc_t *sc, int port)
 938 {
 939
 940         return (sc->cpuports_mask & (1 << port));
 941 }
 942
 943 static __inline int
 944 e6000sw_is_fixedport(e6000sw_softc_t *sc, int port)
 945 {
 946
 947         return (sc->fixed_mask & (1 << port));
 948 }
 949
 950 static __inline int
 951 e6000sw_is_phyport(e6000sw_softc_t *sc, int port)
 952 {
 953         uint32_t phy_mask;
 954         phy_mask = ~(sc->fixed_mask | sc->cpuports_mask);
 955
 956         return (phy_mask & (1 << port));
 957 }
 958
 959 static __inline int
 960 e6000sw_set_pvid(e6000sw_softc_t *sc, int port, int pvid)
 961 {
 962
 963         e6000sw_writereg(sc, REG_PORT(port), PORT_VID, pvid &
 964             PORT_VID_DEF_VID_MASK);
 965
 966         return (0);
 967 }
 968
 969 static __inline int
 970 e6000sw_get_pvid(e6000sw_softc_t *sc, int port, int *pvid)
 971 {
 972
 973         if (pvid == NULL)
 974                 return (ENXIO);
 975
 976         *pvid = e6000sw_readreg(sc, REG_PORT(port), PORT_VID) &
 977             PORT_VID_DEF_VID_MASK;
 978
 979         return (0);
 980 }
 981
 982 static void
 983 e6000sw_tick (void *arg)
 984 {
 985         e6000sw_softc_t *sc;
 986         struct mii_softc *miisc;
 987         int port;
 988
 989         sc = arg;
 990
 991         E6000SW_LOCK_ASSERT(sc, SA_UNLOCKED);
 992         for (;;) {
 993                 E6000SW_LOCK(sc);
 994                 for (port = 0; port < sc->num_ports; port++) {
 995                         /* Tick only on PHY ports */
 996                         if (!e6000sw_is_phyport(sc, port))
 997                                 continue;
 998                         mii_tick(sc->mii[port]);
 999                         LIST_FOREACH(miisc, &sc->mii[port]->mii_phys, mii_list) {
1000                                 if (IFM_INST(sc->mii[port]->mii_media.ifm_cur->ifm_media)
1001                                     != miisc->mii_inst)
1002                                         continue;
1003                                 mii_phy_update(miisc, MII_POLLSTAT);
1004                         }
1005                 }
1006                 E6000SW_UNLOCK(sc);
1007                 pause("e6000sw tick", 1000);
1008         }
1009 }
1010
1011 static void
1012 e6000sw_setup(device_t dev, e6000sw_softc_t *sc)
1013 {
1014         uint16_t atu_ctrl, atu_age;
1015
1016         /* Set aging time */
1017         e6000sw_writereg(sc, REG_GLOBAL, ATU_CONTROL,
1018             (E6000SW_DEFAULT_AGETIME << ATU_CONTROL_AGETIME) |
1019             (1 << ATU_CONTROL_LEARN2ALL));
1020
1021         /* Send all with specific mac address to cpu port */
1022         e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_2x, MGMT_EN_ALL);
1023         e6000sw_writereg(sc, REG_GLOBAL2, MGMT_EN_0x, MGMT_EN_ALL);
1024
1025         /* Disable Remote Management */
1026         e6000sw_writereg(sc, REG_GLOBAL, SWITCH_GLOBAL_CONTROL2, 0);
1027
1028         /* Disable loopback filter and flow control messages */
1029         e6000sw_writereg(sc, REG_GLOBAL2, SWITCH_MGMT,
1030             SWITCH_MGMT_PRI_MASK |
1031             (1 << SWITCH_MGMT_RSVD2CPU) |
1032             SWITCH_MGMT_FC_PRI_MASK |
1033             (1 << SWITCH_MGMT_FORCEFLOW));
1034
1035         e6000sw_atu_flush(dev, sc, NO_OPERATION);
1036         e6000sw_atu_mac_table(dev, sc, NULL, NO_OPERATION);
1037         e6000sw_set_atustat(dev, sc, 0, COUNT_ALL);
1038
1039         /* Set ATU AgeTime to 15 seconds */
1040         atu_age = 1;
1041
1042         atu_ctrl = e6000sw_readreg(sc, REG_GLOBAL, ATU_CONTROL);
1043
1044         /* Set new AgeTime field */
1045         atu_ctrl &= ~ATU_CONTROL_AGETIME_MASK;
1046         e6000sw_writereg(sc, REG_GLOBAL, ATU_CONTROL, atu_ctrl |
1047             (atu_age << ATU_CONTROL_AGETIME));
1048 }
1049
1050 static void
1051 e6000sw_port_vlan_conf(e6000sw_softc_t *sc)
1052 {
1053         int port, ret;
1054         device_t dev;
1055
1056         dev = sc->dev;
1057         /* Disable all ports */
1058         for (port = 0; port < sc->num_ports; port++) {
1059                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL);
1060                 e6000sw_writereg(sc, REG_PORT(port), PORT_CONTROL,
1061                     (ret & ~PORT_CONTROL_ENABLE));
1062         }
1063
1064         /* Set port priority */
1065         for (port = 0; port < sc->num_ports; port++) {
1066                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_VID);
1067                 ret &= ~PORT_VID_PRIORITY_MASK;
1068                 e6000sw_writereg(sc, REG_PORT(port), PORT_VID, ret);
1069         }
1070
1071         /* Set VID map */
1072         for (port = 0; port < sc->num_ports; port++) {
1073                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_VID);
1074                 ret &= ~PORT_VID_DEF_VID_MASK;
1075                 ret |= (port + 1);
1076                 e6000sw_writereg(sc, REG_PORT(port), PORT_VID, ret);
1077         }
1078
1079         /* Enable all ports */
1080         for (port = 0; port < sc->num_ports; port++) {
1081                 ret = e6000sw_readreg(sc, REG_PORT(port), PORT_CONTROL);
1082                 e6000sw_writereg(sc, REG_PORT(port), PORT_CONTROL, (ret |
1083                     PORT_CONTROL_ENABLE));
1084         }
1085 }
1086
1087 static void
1088 e6000sw_set_atustat(device_t dev, e6000sw_softc_t *sc, int bin, int flag)
1089 {
1090         uint16_t ret;
1091
1092         ret = e6000sw_readreg(sc, REG_GLOBAL2, ATU_STATS);
1093         e6000sw_writereg(sc, REG_GLOBAL2, ATU_STATS, (bin << ATU_STATS_BIN ) |
1094             (flag << ATU_STATS_FLAG));
1095 }
1096
1097 static int
1098 e6000sw_atu_mac_table(device_t dev, e6000sw_softc_t *sc, struct atu_opt *atu,
1099     int flag)
1100 {
1101         uint16_t ret_opt;
1102         uint16_t ret_data;
1103         int retries;
1104
1105         if (flag == NO_OPERATION)
1106                 return (0);
1107         else if ((flag & (LOAD_FROM_FIB | PURGE_FROM_FIB | GET_NEXT_IN_FIB |
1108             GET_VIOLATION_DATA | CLEAR_VIOLATION_DATA)) == 0) {
1109                 device_printf(dev, "Wrong Opcode for ATU operation\n");
1110                 return (EINVAL);
1111         }
1112
1113         ret_opt = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1114
1115         if (ret_opt & ATU_UNIT_BUSY) {
1116                 device_printf(dev, "ATU unit is busy, cannot access"
1117                     "register\n");
1118                 return (EBUSY);
1119         } else {
1120                 if(flag & LOAD_FROM_FIB) {
1121                         ret_data = e6000sw_readreg(sc, REG_GLOBAL, ATU_DATA);
1122                         e6000sw_writereg(sc, REG_GLOBAL2, ATU_DATA, (ret_data &
1123                             ~ENTRY_STATE));
1124                 }
1125                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR01, atu->mac_01);
1126                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR23, atu->mac_23);
1127                 e6000sw_writereg(sc, REG_GLOBAL, ATU_MAC_ADDR45, atu->mac_45);
1128                 e6000sw_writereg(sc, REG_GLOBAL, ATU_FID, atu->fid);
1129
1130                 e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION, (ret_opt |
1131                     ATU_UNIT_BUSY | flag));
1132
1133                 retries = E6000SW_RETRIES;
1134                 while (--retries & (e6000sw_readreg(sc, REG_GLOBAL,
1135                     ATU_OPERATION) & ATU_UNIT_BUSY))
1136                         DELAY(1);
1137
1138                 if (retries == 0)
1139                         device_printf(dev, "Timeout while flushing\n");
1140                 else if (flag & GET_NEXT_IN_FIB) {
1141                         atu->mac_01 = e6000sw_readreg(sc, REG_GLOBAL,
1142                             ATU_MAC_ADDR01);
1143                         atu->mac_23 = e6000sw_readreg(sc, REG_GLOBAL,
1144                             ATU_MAC_ADDR23);
1145                         atu->mac_45 = e6000sw_readreg(sc, REG_GLOBAL,
1146                             ATU_MAC_ADDR45);
1147                 }
1148         }
1149
1150         return (0);
1151 }
1152
1153 static int
1154 e6000sw_atu_flush(device_t dev, e6000sw_softc_t *sc, int flag)
1155 {
1156         uint16_t ret;
1157         int retries;
1158
1159         if (flag == NO_OPERATION)
1160                 return (0);
1161
1162         ret = e6000sw_readreg(sc, REG_GLOBAL, ATU_OPERATION);
1163         if (ret & ATU_UNIT_BUSY) {
1164                 device_printf(dev, "Atu unit is busy, cannot flush\n");
1165                 return (EBUSY);
1166         } else {
1167                 e6000sw_writereg(sc, REG_GLOBAL, ATU_OPERATION, (ret |
1168                     ATU_UNIT_BUSY | flag));
1169                 retries = E6000SW_RETRIES;
1170                 while (--retries & (e6000sw_readreg(sc, REG_GLOBAL,
1171                     ATU_OPERATION) & ATU_UNIT_BUSY))
1172                         DELAY(1);
1173
1174                 if (retries == 0)
1175                         device_printf(dev, "Timeout while flushing\n");
1176         }
1177
1178         return (0);
1179 }