Annotation of sys/dev/pci/if_atw_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_atw_pci.c,v 1.7 2005/09/08 12:44:55 jsg Exp $ */
! 2: /* $NetBSD: if_atw_pci.c,v 1.7 2004/07/23 07:07:55 dyoung Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center; Charles M. Hannum; and David Young.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip.
! 43: *
! 44: * Derived from the ``Tulip'' PCI bus front-end.
! 45: */
! 46:
! 47: #include <sys/param.h>
! 48: #include <sys/systm.h>
! 49: #include <sys/mbuf.h>
! 50: #include <sys/malloc.h>
! 51: #include <sys/kernel.h>
! 52: #include <sys/socket.h>
! 53: #include <sys/ioctl.h>
! 54: #include <sys/errno.h>
! 55: #include <sys/device.h>
! 56:
! 57: #include <machine/endian.h>
! 58:
! 59: #include <net/if.h>
! 60: #include <net/if_dl.h>
! 61: #include <net/if_media.h>
! 62: #ifdef INET
! 63: #include <netinet/in.h>
! 64: #include <netinet/if_ether.h>
! 65: #endif
! 66:
! 67: #include <net80211/ieee80211_radiotap.h>
! 68: #include <net80211/ieee80211_var.h>
! 69:
! 70: #include <machine/bus.h>
! 71: #include <machine/intr.h>
! 72:
! 73: #include <dev/ic/atwreg.h>
! 74: #include <dev/ic/rf3000reg.h>
! 75: #include <dev/ic/si4136reg.h>
! 76: #include <dev/ic/atwvar.h>
! 77:
! 78: #include <dev/pci/pcivar.h>
! 79: #include <dev/pci/pcireg.h>
! 80: #include <dev/pci/pcidevs.h>
! 81:
! 82: /*
! 83: * PCI configuration space registers used by the ADM8211.
! 84: */
! 85: #define ATW_PCI_IOBA 0x10 /* i/o mapped base */
! 86: #define ATW_PCI_MMBA 0x14 /* memory mapped base */
! 87:
! 88: struct atw_pci_softc {
! 89: struct atw_softc psc_atw; /* real ADM8211 softc */
! 90:
! 91: pci_intr_handle_t psc_ih; /* interrupt handle */
! 92: void *psc_intrcookie;
! 93:
! 94: pci_chipset_tag_t psc_pc; /* our PCI chipset */
! 95: pcitag_t psc_pcitag; /* our PCI tag */
! 96: };
! 97:
! 98: int atw_pci_match(struct device *, void *, void *);
! 99: void atw_pci_attach(struct device *, struct device *, void *);
! 100:
! 101: struct cfattach atw_pci_ca = {
! 102: sizeof (struct atw_softc), atw_pci_match, atw_pci_attach
! 103: };
! 104:
! 105: const struct pci_matchid atw_pci_devices[] = {
! 106: { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 },
! 107: };
! 108:
! 109: int
! 110: atw_pci_match(struct device *parent, void *match, void *aux)
! 111: {
! 112: return (pci_matchbyid((struct pci_attach_args *)aux, atw_pci_devices,
! 113: sizeof(atw_pci_devices)/sizeof(atw_pci_devices[0])));
! 114: }
! 115:
! 116: static int
! 117: atw_pci_enable(struct atw_softc *sc)
! 118: {
! 119: struct atw_pci_softc *psc = (void *)sc;
! 120:
! 121: /* Establish the interrupt. */
! 122: psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih,
! 123: IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname);
! 124: if (psc->psc_intrcookie == NULL) {
! 125: printf("%s: unable to establish interrupt\n",
! 126: sc->sc_dev.dv_xname);
! 127: return (1);
! 128: }
! 129:
! 130: return (0);
! 131: }
! 132:
! 133: static void
! 134: atw_pci_disable(struct atw_softc *sc)
! 135: {
! 136: struct atw_pci_softc *psc = (void *)sc;
! 137:
! 138: /* Unhook the interrupt handler. */
! 139: pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie);
! 140: psc->psc_intrcookie = NULL;
! 141: }
! 142:
! 143: void
! 144: atw_pci_attach(struct device *parent, struct device *self, void *aux)
! 145: {
! 146: struct atw_pci_softc *psc = (void *) self;
! 147: struct atw_softc *sc = &psc->psc_atw;
! 148: struct pci_attach_args *pa = aux;
! 149: pci_chipset_tag_t pc = pa->pa_pc;
! 150: const char *intrstr = NULL;
! 151: bus_space_tag_t iot, memt;
! 152: bus_space_handle_t ioh, memh;
! 153: int ioh_valid, memh_valid;
! 154: pcireg_t reg;
! 155: int pmreg;
! 156:
! 157: psc->psc_pc = pa->pa_pc;
! 158: psc->psc_pcitag = pa->pa_tag;
! 159:
! 160: /*
! 161: * No power management hooks.
! 162: * XXX Maybe we should add some!
! 163: */
! 164: sc->sc_flags |= ATWF_ENABLED;
! 165:
! 166: /*
! 167: * Get revision info, and set some chip-specific variables.
! 168: */
! 169: sc->sc_rev = PCI_REVISION(pa->pa_class);
! 170:
! 171: /*
! 172: * Check to see if the device is in power-save mode, and
! 173: * being it out if necessary.
! 174: *
! 175: * XXX This code comes almost verbatim from if_tlp_pci.c. I do
! 176: * not understand it. Tulip clears the "sleep mode" bit in the
! 177: * CFDA register, first. There is an equivalent (?) register at the
! 178: * same place in the ADM8211, but the docs do not assign its bits
! 179: * any meanings. -dcy
! 180: */
! 181: if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
! 182: reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR);
! 183: switch (reg & PCI_PMCSR_STATE_MASK) {
! 184: case PCI_PMCSR_STATE_D1:
! 185: case PCI_PMCSR_STATE_D2:
! 186: printf(": waking up from power state D%d\n%s",
! 187: reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname);
! 188: pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
! 189: (reg & ~PCI_PMCSR_STATE_MASK) |
! 190: PCI_PMCSR_STATE_D0);
! 191: break;
! 192: case PCI_PMCSR_STATE_D3:
! 193: /*
! 194: * The card has lost all configuration data in
! 195: * this state, so punt.
! 196: */
! 197: printf(": unable to wake up from power state D3, "
! 198: "reboot required.\n");
! 199: pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
! 200: (reg & ~PCI_PMCSR_STATE_MASK) |
! 201: PCI_PMCSR_STATE_D0);
! 202: return;
! 203: }
! 204: }
! 205:
! 206: /*
! 207: * Map the device.
! 208: */
! 209: ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA,
! 210: PCI_MAPREG_TYPE_IO, 0,
! 211: &iot, &ioh, NULL, NULL, 0) == 0);
! 212: memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA,
! 213: PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
! 214: &memt, &memh, NULL, NULL, 0) == 0);
! 215:
! 216: if (memh_valid) {
! 217: sc->sc_st = memt;
! 218: sc->sc_sh = memh;
! 219: } else if (ioh_valid) {
! 220: sc->sc_st = iot;
! 221: sc->sc_sh = ioh;
! 222: } else {
! 223: printf(": unable to map device registers\n");
! 224: return;
! 225: }
! 226:
! 227: sc->sc_dmat = pa->pa_dmat;
! 228:
! 229: /*
! 230: * Get the cacheline size.
! 231: */
! 232: sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag,
! 233: PCI_BHLC_REG));
! 234:
! 235: /*
! 236: * Get PCI data moving command info.
! 237: */
! 238: if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */
! 239: sc->sc_flags |= ATWF_MRL;
! 240: if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */
! 241: sc->sc_flags |= ATWF_MRM;
! 242: if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */
! 243: sc->sc_flags |= ATWF_MWI;
! 244:
! 245: /*
! 246: * Map and establish our interrupt.
! 247: */
! 248: if (pci_intr_map(pa, &psc->psc_ih)) {
! 249: printf(": unable to map interrupt\n");
! 250: return;
! 251: }
! 252: intrstr = pci_intr_string(pc, psc->psc_ih);
! 253: psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET,
! 254: atw_intr, sc, sc->sc_dev.dv_xname);
! 255: if (psc->psc_intrcookie == NULL) {
! 256: printf(": unable to establish interrupt");
! 257: if (intrstr != NULL)
! 258: printf(" at %s", intrstr);
! 259: printf("\n");
! 260: return;
! 261: }
! 262:
! 263: printf(": %s\n", intrstr);
! 264:
! 265: sc->sc_enable = atw_pci_enable;
! 266: sc->sc_disable = atw_pci_disable;
! 267:
! 268: /*
! 269: * Finish off the attach.
! 270: */
! 271: atw_attach(sc);
! 272: }
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