Annotation of sys/dev/cardbus/if_pgt_cardbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_pgt_cardbus.c,v 1.7 2006/11/11 10:28:20 maja Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2006 Marcus Glocker <mglocker@openbsd.org>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: /*
! 20: * CardBus front-end for the PrismGT
! 21: */
! 22:
! 23: #include "bpfilter.h"
! 24:
! 25: #include <sys/param.h>
! 26: #include <sys/sockio.h>
! 27: #include <sys/mbuf.h>
! 28: #include <sys/kernel.h>
! 29: #include <sys/socket.h>
! 30: #include <sys/systm.h>
! 31: #include <sys/malloc.h>
! 32: #include <sys/timeout.h>
! 33: #include <sys/device.h>
! 34:
! 35: #include <machine/bus.h>
! 36: #include <machine/intr.h>
! 37:
! 38: #include <net/if.h>
! 39: #include <net/if_dl.h>
! 40: #include <net/if_media.h>
! 41:
! 42: #include <netinet/in.h>
! 43: #include <netinet/if_ether.h>
! 44:
! 45: #include <net80211/ieee80211_var.h>
! 46: #include <net80211/ieee80211_radiotap.h>
! 47:
! 48: #include <dev/ic/pgtreg.h>
! 49: #include <dev/ic/pgtvar.h>
! 50:
! 51: #include <dev/pci/pcireg.h>
! 52: #include <dev/pci/pcivar.h>
! 53: #include <dev/pci/pcidevs.h>
! 54:
! 55: #include <dev/cardbus/cardbusvar.h>
! 56:
! 57: struct pgt_cardbus_softc {
! 58: struct pgt_softc sc_pgt;
! 59: cardbus_devfunc_t sc_ct;
! 60: cardbustag_t sc_tag;
! 61: int sc_intrline;
! 62:
! 63: void *sc_ih;
! 64: bus_size_t sc_mapsize;
! 65: pcireg_t sc_bar0_val;
! 66: };
! 67:
! 68: int pgt_cardbus_match(struct device *, void *, void *);
! 69: void pgt_cardbus_attach(struct device *, struct device *, void *);
! 70: int pgt_cardbus_detach(struct device *, int);
! 71: int pgt_cardbus_enable(struct pgt_softc *);
! 72: void pgt_cardbus_disable(struct pgt_softc *);
! 73: void pgt_cardbus_power(struct pgt_softc *, int);
! 74: void pgt_cardbus_setup(struct pgt_cardbus_softc *);
! 75:
! 76: struct cfattach pgt_cardbus_ca = {
! 77: sizeof(struct pgt_cardbus_softc), pgt_cardbus_match, pgt_cardbus_attach,
! 78: pgt_cardbus_detach
! 79: };
! 80:
! 81: const struct cardbus_matchid pgt_cardbus_devices[] = {
! 82: { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3877 },
! 83: { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_ISL3890 },
! 84: { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE154G72 }
! 85: };
! 86:
! 87: int
! 88: pgt_cardbus_match(struct device *parent, void *match, void *aux)
! 89: {
! 90: return (cardbus_matchbyid((struct cardbus_attach_args *)aux,
! 91: pgt_cardbus_devices,
! 92: sizeof(pgt_cardbus_devices) / sizeof(pgt_cardbus_devices[0])));
! 93: }
! 94:
! 95: void
! 96: pgt_cardbus_attach(struct device *parent, struct device *self, void *aux)
! 97: {
! 98: struct pgt_cardbus_softc *csc = (struct pgt_cardbus_softc *)self;
! 99: struct pgt_softc *sc = &csc->sc_pgt;
! 100: struct cardbus_attach_args *ca = aux;
! 101: cardbus_devfunc_t ct = ca->ca_ct;
! 102: bus_addr_t base;
! 103: int error;
! 104:
! 105: sc->sc_dmat = ca->ca_dmat;
! 106: csc->sc_ct = ct;
! 107: csc->sc_tag = ca->ca_tag;
! 108: csc->sc_intrline = ca->ca_intrline;
! 109:
! 110: /* power management hooks */
! 111: sc->sc_enable = pgt_cardbus_enable;
! 112: sc->sc_disable = pgt_cardbus_disable;
! 113: sc->sc_power = pgt_cardbus_power;
! 114:
! 115: /* remember chipset */
! 116: if (CARDBUS_PRODUCT(ca->ca_id) == PCI_PRODUCT_INTERSIL_ISL3877)
! 117: sc->sc_flags |= SC_ISL3877;
! 118:
! 119: /* map control / status registers */
! 120: error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
! 121: PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
! 122: &sc->sc_iotag, &sc->sc_iohandle, &base, &csc->sc_mapsize);
! 123: if (error != 0) {
! 124: printf(": could not map memory space\n");
! 125: return;
! 126: }
! 127: csc->sc_bar0_val = base | CARDBUS_MAPREG_TYPE_MEM;
! 128:
! 129: /* disable all interrupts */
! 130: bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0);
! 131: (void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN);
! 132: DELAY(PGT_WRITEIO_DELAY);
! 133:
! 134: /* set up the PCI configuration registers */
! 135: pgt_cardbus_setup(csc);
! 136:
! 137: printf(": irq %d\n", csc->sc_intrline);
! 138:
! 139: if (rootvp == NULL)
! 140: mountroothook_establish(pgt_attach, sc);
! 141: else
! 142: pgt_attach(sc);
! 143: }
! 144:
! 145: int
! 146: pgt_cardbus_detach(struct device *self, int flags)
! 147: {
! 148: struct pgt_cardbus_softc *csc = (struct pgt_cardbus_softc *)self;
! 149: struct pgt_softc *sc = &csc->sc_pgt;
! 150: cardbus_devfunc_t ct = csc->sc_ct;
! 151: cardbus_chipset_tag_t cc = ct->ct_cc;
! 152: cardbus_function_tag_t cf = ct->ct_cf;
! 153: int error;
! 154:
! 155: error = pgt_detach(sc);
! 156: if (error != 0)
! 157: return (error);
! 158:
! 159: /* unhook the interrupt handler */
! 160: if (csc->sc_ih != NULL) {
! 161: cardbus_intr_disestablish(cc, cf, csc->sc_ih);
! 162: csc->sc_ih = NULL;
! 163: }
! 164:
! 165: /* release bus space and close window */
! 166: Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG,
! 167: sc->sc_iotag, sc->sc_iohandle, csc->sc_mapsize);
! 168:
! 169: return (0);
! 170: }
! 171:
! 172: int
! 173: pgt_cardbus_enable(struct pgt_softc *sc)
! 174: {
! 175: struct pgt_cardbus_softc *csc = (struct pgt_cardbus_softc *)sc;
! 176: cardbus_devfunc_t ct = csc->sc_ct;
! 177: cardbus_chipset_tag_t cc = ct->ct_cc;
! 178: cardbus_function_tag_t cf = ct->ct_cf;
! 179:
! 180: /* power on the socket */
! 181: Cardbus_function_enable(ct);
! 182:
! 183: /* setup the PCI configuration registers */
! 184: pgt_cardbus_setup(csc);
! 185:
! 186: /* map and establish the interrupt handler */
! 187: csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
! 188: pgt_intr, sc, sc->sc_dev.dv_xname);
! 189: if (csc->sc_ih == NULL) {
! 190: printf("%s: could not establish interrupt at %d\n",
! 191: sc->sc_dev.dv_xname, csc->sc_intrline);
! 192: Cardbus_function_disable(ct);
! 193: return (1);
! 194: }
! 195:
! 196: return (0);
! 197: }
! 198:
! 199: void
! 200: pgt_cardbus_disable(struct pgt_softc *sc)
! 201: {
! 202: struct pgt_cardbus_softc *csc = (struct pgt_cardbus_softc *)sc;
! 203: cardbus_devfunc_t ct = csc->sc_ct;
! 204: cardbus_chipset_tag_t cc = ct->ct_cc;
! 205: cardbus_function_tag_t cf = ct->ct_cf;
! 206:
! 207: /* unhook the interrupt handler */
! 208: cardbus_intr_disestablish(cc, cf, csc->sc_ih);
! 209: csc->sc_ih = NULL;
! 210:
! 211: /* power down the socket */
! 212: Cardbus_function_disable(ct);
! 213: }
! 214:
! 215: void
! 216: pgt_cardbus_power(struct pgt_softc *sc, int why)
! 217: {
! 218: if (why == PWR_RESUME)
! 219: if (sc->sc_enable != NULL)
! 220: (*sc->sc_enable)(sc);
! 221: if (why == PWR_SUSPEND)
! 222: if (sc->sc_disable != NULL)
! 223: (*sc->sc_disable)(sc);
! 224: }
! 225:
! 226: void
! 227: pgt_cardbus_setup(struct pgt_cardbus_softc *csc)
! 228: {
! 229: cardbus_devfunc_t ct = csc->sc_ct;
! 230: cardbus_chipset_tag_t cc = ct->ct_cc;
! 231: cardbus_function_tag_t cf = ct->ct_cf;
! 232: pcireg_t reg;
! 233:
! 234: /* program the BAR */
! 235: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BASE0_REG,
! 236: csc->sc_bar0_val);
! 237:
! 238: /* make sure the right access type is on the cardbus bridge */
! 239: (*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
! 240: (*cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
! 241:
! 242: /* enable the appropriate bits in the PCI CSR */
! 243: reg = cardbus_conf_read(cc, cf, csc->sc_tag,
! 244: CARDBUS_COMMAND_STATUS_REG);
! 245: reg |= CARDBUS_COMMAND_MASTER_ENABLE | CARDBUS_COMMAND_MEM_ENABLE;
! 246: cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
! 247: reg);
! 248: }
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