Annotation of sys/dev/cardbus/if_ral_cardbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_ral_cardbus.c,v 1.9 2006/10/22 12:14:44 damien Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 2005, 2006
! 5: * Damien Bergamini <damien.bergamini@free.fr>
! 6: *
! 7: * Permission to use, copy, modify, and distribute this software for any
! 8: * purpose with or without fee is hereby granted, provided that the above
! 9: * copyright notice and this permission notice appear in all copies.
! 10: *
! 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 15: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 16: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 17: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 18: */
! 19:
! 20: /*
! 21: * CardBus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
! 22: */
! 23:
! 24: #include "bpfilter.h"
! 25:
! 26: #include <sys/param.h>
! 27: #include <sys/sockio.h>
! 28: #include <sys/mbuf.h>
! 29: #include <sys/kernel.h>
! 30: #include <sys/socket.h>
! 31: #include <sys/systm.h>
! 32: #include <sys/malloc.h>
! 33: #include <sys/timeout.h>
! 34: #include <sys/device.h>
! 35:
! 36: #include <machine/bus.h>
! 37: #include <machine/intr.h>
! 38:
! 39: #include <net/if.h>
! 40: #include <net/if_dl.h>
! 41: #include <net/if_media.h>
! 42:
! 43: #include <netinet/in.h>
! 44: #include <netinet/if_ether.h>
! 45:
! 46: #include <net80211/ieee80211_var.h>
! 47: #include <net80211/ieee80211_amrr.h>
! 48: #include <net80211/ieee80211_radiotap.h>
! 49:
! 50: #include <dev/ic/rt2560var.h>
! 51: #include <dev/ic/rt2661var.h>
! 52:
! 53: #include <dev/pci/pcireg.h>
! 54: #include <dev/pci/pcivar.h>
! 55: #include <dev/pci/pcidevs.h>
! 56:
! 57: #include <dev/cardbus/cardbusvar.h>
! 58:
! 59: static struct ral_opns {
! 60: int (*attach)(void *, int);
! 61: int (*detach)(void *);
! 62: int (*intr)(void *);
! 63:
! 64: } ral_rt2560_opns = {
! 65: rt2560_attach,
! 66: rt2560_detach,
! 67: rt2560_intr
! 68:
! 69: }, ral_rt2661_opns = {
! 70: rt2661_attach,
! 71: rt2661_detach,
! 72: rt2661_intr
! 73: };
! 74:
! 75: struct ral_cardbus_softc {
! 76: union {
! 77: struct rt2560_softc sc_rt2560;
! 78: struct rt2661_softc sc_rt2661;
! 79: } u;
! 80: #define sc_sc u.sc_rt2560
! 81:
! 82: /* cardbus specific goo */
! 83: struct ral_opns *sc_opns;
! 84: cardbus_devfunc_t sc_ct;
! 85: cardbustag_t sc_tag;
! 86: void *sc_ih;
! 87: bus_size_t sc_mapsize;
! 88: pcireg_t sc_bar_val;
! 89: int sc_intrline;
! 90: };
! 91:
! 92: int ral_cardbus_match(struct device *, void *, void *);
! 93: void ral_cardbus_attach(struct device *, struct device *, void *);
! 94: int ral_cardbus_detach(struct device *, int);
! 95:
! 96: struct cfattach ral_cardbus_ca = {
! 97: sizeof (struct ral_cardbus_softc), ral_cardbus_match,
! 98: ral_cardbus_attach, ral_cardbus_detach
! 99: };
! 100:
! 101: static const struct cardbus_matchid ral_cardbus_devices[] = {
! 102: { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2560 },
! 103: { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561 },
! 104: { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2561S },
! 105: { PCI_VENDOR_RALINK, PCI_PRODUCT_RALINK_RT2661 }
! 106: };
! 107:
! 108: int ral_cardbus_enable(struct rt2560_softc *);
! 109: void ral_cardbus_disable(struct rt2560_softc *);
! 110: void ral_cardbus_power(struct rt2560_softc *, int);
! 111: void ral_cardbus_setup(struct ral_cardbus_softc *);
! 112:
! 113: int
! 114: ral_cardbus_match(struct device *parent, void *match, void *aux)
! 115: {
! 116: return (cardbus_matchbyid((struct cardbus_attach_args *)aux,
! 117: ral_cardbus_devices,
! 118: sizeof (ral_cardbus_devices) / sizeof (ral_cardbus_devices[0])));
! 119: }
! 120:
! 121: void
! 122: ral_cardbus_attach(struct device *parent, struct device *self, void *aux)
! 123: {
! 124: struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)self;
! 125: struct rt2560_softc *sc = &csc->sc_sc;
! 126: struct cardbus_attach_args *ca = aux;
! 127: cardbus_devfunc_t ct = ca->ca_ct;
! 128: bus_addr_t base;
! 129: int error;
! 130:
! 131: csc->sc_opns =
! 132: (CARDBUS_PRODUCT(ca->ca_id) == PCI_PRODUCT_RALINK_RT2560) ?
! 133: &ral_rt2560_opns : &ral_rt2661_opns;
! 134:
! 135: sc->sc_dmat = ca->ca_dmat;
! 136: csc->sc_ct = ct;
! 137: csc->sc_tag = ca->ca_tag;
! 138: csc->sc_intrline = ca->ca_intrline;
! 139:
! 140: /* power management hooks */
! 141: sc->sc_enable = ral_cardbus_enable;
! 142: sc->sc_disable = ral_cardbus_disable;
! 143: sc->sc_power = ral_cardbus_power;
! 144:
! 145: /* map control/status registers */
! 146: error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
! 147: CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &base,
! 148: &csc->sc_mapsize);
! 149: if (error != 0) {
! 150: printf(": could not map memory space\n");
! 151: return;
! 152: }
! 153:
! 154: csc->sc_bar_val = base | CARDBUS_MAPREG_TYPE_MEM;
! 155:
! 156: /* set up the PCI configuration registers */
! 157: ral_cardbus_setup(csc);
! 158:
! 159: printf(": irq %d", csc->sc_intrline);
! 160:
! 161: (*csc->sc_opns->attach)(sc, CARDBUS_PRODUCT(ca->ca_id));
! 162:
! 163: Cardbus_function_disable(ct);
! 164: }
! 165:
! 166: int
! 167: ral_cardbus_detach(struct device *self, int flags)
! 168: {
! 169: struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)self;
! 170: struct rt2560_softc *sc = &csc->sc_sc;
! 171: cardbus_devfunc_t ct = csc->sc_ct;
! 172: cardbus_chipset_tag_t cc = ct->ct_cc;
! 173: cardbus_function_tag_t cf = ct->ct_cf;
! 174: int error;
! 175:
! 176: error = (*csc->sc_opns->detach)(sc);
! 177: if (error != 0)
! 178: return error;
! 179:
! 180: /* unhook the interrupt handler */
! 181: if (csc->sc_ih != NULL) {
! 182: cardbus_intr_disestablish(cc, cf, csc->sc_ih);
! 183: csc->sc_ih = NULL;
! 184: }
! 185:
! 186: /* release bus space and close window */
! 187: Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_st, sc->sc_sh,
! 188: csc->sc_mapsize);
! 189:
! 190: return 0;
! 191: }
! 192:
! 193: int
! 194: ral_cardbus_enable(struct rt2560_softc *sc)
! 195: {
! 196: struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
! 197: cardbus_devfunc_t ct = csc->sc_ct;
! 198: cardbus_chipset_tag_t cc = ct->ct_cc;
! 199: cardbus_function_tag_t cf = ct->ct_cf;
! 200:
! 201: /* power on the socket */
! 202: Cardbus_function_enable(ct);
! 203:
! 204: /* setup the PCI configuration registers */
! 205: ral_cardbus_setup(csc);
! 206:
! 207: /* map and establish the interrupt handler */
! 208: csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
! 209: csc->sc_opns->intr, sc, sc->sc_dev.dv_xname);
! 210: if (csc->sc_ih == NULL) {
! 211: printf("%s: could not establish interrupt at %d\n",
! 212: sc->sc_dev.dv_xname, csc->sc_intrline);
! 213: Cardbus_function_disable(ct);
! 214: return 1;
! 215: }
! 216:
! 217: return 0;
! 218: }
! 219:
! 220: void
! 221: ral_cardbus_disable(struct rt2560_softc *sc)
! 222: {
! 223: struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
! 224: cardbus_devfunc_t ct = csc->sc_ct;
! 225: cardbus_chipset_tag_t cc = ct->ct_cc;
! 226: cardbus_function_tag_t cf = ct->ct_cf;
! 227:
! 228: /* unhook the interrupt handler */
! 229: cardbus_intr_disestablish(cc, cf, csc->sc_ih);
! 230: csc->sc_ih = NULL;
! 231:
! 232: /* power down the socket */
! 233: Cardbus_function_disable(ct);
! 234: }
! 235:
! 236: void
! 237: ral_cardbus_power(struct rt2560_softc *sc, int why)
! 238: {
! 239: struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
! 240:
! 241: if (why == PWR_RESUME) {
! 242: /* kick the PCI configuration registers */
! 243: ral_cardbus_setup(csc);
! 244: }
! 245: }
! 246:
! 247: void
! 248: ral_cardbus_setup(struct ral_cardbus_softc *csc)
! 249: {
! 250: cardbus_devfunc_t ct = csc->sc_ct;
! 251: cardbus_chipset_tag_t cc = ct->ct_cc;
! 252: cardbus_function_tag_t cf = ct->ct_cf;
! 253: pcireg_t reg;
! 254:
! 255: /* program the BAR */
! 256: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BASE0_REG,
! 257: csc->sc_bar_val);
! 258:
! 259: /* make sure the right access type is on the cardbus bridge */
! 260: (*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
! 261: (*cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
! 262:
! 263: /* enable the appropriate bits in the PCI CSR */
! 264: reg = cardbus_conf_read(cc, cf, csc->sc_tag,
! 265: CARDBUS_COMMAND_STATUS_REG);
! 266: reg |= CARDBUS_COMMAND_MASTER_ENABLE | CARDBUS_COMMAND_MEM_ENABLE;
! 267: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
! 268: reg);
! 269: }
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