Annotation of sys/dev/pci/if_gem_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_gem_pci.c,v 1.28 2007/04/19 19:00:01 kettenis Exp $ */
! 2: /* $NetBSD: if_gem_pci.c,v 1.1 2001/09/16 00:11:42 eeh Exp $ */
! 3:
! 4: /*
! 5: *
! 6: * Copyright (C) 2001 Eduardo Horvath.
! 7: * All rights reserved.
! 8: *
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
! 20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 22: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
! 23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 29: * SUCH DAMAGE.
! 30: *
! 31: */
! 32:
! 33: /*
! 34: * PCI bindings for Sun GEM ethernet controllers.
! 35: */
! 36:
! 37: #include <sys/param.h>
! 38: #include <sys/systm.h>
! 39: #include <sys/malloc.h>
! 40: #include <sys/kernel.h>
! 41: #include <sys/socket.h>
! 42: #include <sys/errno.h>
! 43: #include <sys/device.h>
! 44:
! 45: #include <machine/endian.h>
! 46:
! 47: #include <net/if.h>
! 48: #include <net/if_dl.h>
! 49: #include <net/if_media.h>
! 50:
! 51: #ifdef INET
! 52: #include <netinet/in.h>
! 53: #include <netinet/if_ether.h>
! 54: #endif
! 55:
! 56: #if NBPFILTER > 0
! 57: #include <net/bpf.h>
! 58: #endif
! 59:
! 60: #include <machine/bus.h>
! 61: #include <machine/intr.h>
! 62:
! 63: #ifdef __sparc64__
! 64: #include <dev/ofw/openfirm.h>
! 65: #endif
! 66:
! 67: #include <dev/mii/mii.h>
! 68: #include <dev/mii/miivar.h>
! 69: #include <dev/mii/mii_bitbang.h>
! 70:
! 71: #include <dev/ic/gemreg.h>
! 72: #include <dev/ic/gemvar.h>
! 73:
! 74: #include <dev/pci/pcivar.h>
! 75: #include <dev/pci/pcireg.h>
! 76: #include <dev/pci/pcidevs.h>
! 77:
! 78: struct gem_pci_softc {
! 79: struct gem_softc gsc_gem; /* GEM device */
! 80: bus_space_tag_t gsc_memt;
! 81: bus_space_handle_t gsc_memh;
! 82: void *gsc_ih;
! 83: };
! 84:
! 85: int gem_match_pci(struct device *, void *, void *);
! 86: void gem_attach_pci(struct device *, struct device *, void *);
! 87: int gem_pci_enaddr(struct gem_softc *, struct pci_attach_args *);
! 88:
! 89: struct cfattach gem_pci_ca = {
! 90: sizeof(struct gem_pci_softc), gem_match_pci, gem_attach_pci
! 91: };
! 92:
! 93: /*
! 94: * Attach routines need to be split out to different bus-specific files.
! 95: */
! 96:
! 97: const struct pci_matchid gem_pci_devices[] = {
! 98: { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_ERINETWORK },
! 99: { PCI_VENDOR_SUN, PCI_PRODUCT_SUN_GEMNETWORK },
! 100: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_INTREPID2_GMAC },
! 101: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_K2_GMAC },
! 102: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_PANGEA_GMAC },
! 103: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_SHASTA_GMAC },
! 104: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_UNINORTHGMAC },
! 105: { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_UNINORTH2GMAC },
! 106: };
! 107:
! 108: int
! 109: gem_match_pci(struct device *parent, void *cf, void *aux)
! 110: {
! 111: return (pci_matchbyid((struct pci_attach_args *)aux, gem_pci_devices,
! 112: sizeof(gem_pci_devices)/sizeof(gem_pci_devices[0])));
! 113: }
! 114:
! 115: #define PROMHDR_PTR_DATA 0x18
! 116: #define PROMDATA_PTR_VPD 0x08
! 117: #define PROMDATA_DATA2 0x0a
! 118:
! 119: static const u_int8_t gem_promhdr[] = { 0x55, 0xaa };
! 120: static const u_int8_t gem_promdat[] = {
! 121: 'P', 'C', 'I', 'R',
! 122: PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
! 123: PCI_PRODUCT_SUN_GEMNETWORK & 0xff, PCI_PRODUCT_SUN_GEMNETWORK >> 8
! 124: };
! 125:
! 126: static const u_int8_t gem_promdat2[] = {
! 127: 0x18, 0x00, /* structure length */
! 128: 0x00, /* structure revision */
! 129: 0x00, /* interface revision */
! 130: PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */
! 131: PCI_CLASS_NETWORK /* class code */
! 132: };
! 133:
! 134: int
! 135: gem_pci_enaddr(struct gem_softc *sc, struct pci_attach_args *pa)
! 136: {
! 137: struct pci_vpd *vpd;
! 138: bus_space_handle_t romh;
! 139: bus_space_tag_t romt;
! 140: bus_size_t romsize;
! 141: u_int8_t buf[32];
! 142: pcireg_t address, mask;
! 143: int dataoff, vpdoff;
! 144: int rv = -1;
! 145:
! 146: address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
! 147: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, 0xfffffffe);
! 148: mask = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
! 149: address |= PCI_ROM_ENABLE;
! 150: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
! 151:
! 152: romt = pa->pa_memt;
! 153: romsize = PCI_ROM_SIZE(mask);
! 154: if (bus_space_map(romt, PCI_ROM_ADDR(address), romsize, 0, &romh)) {
! 155: romsize = 0;
! 156: goto fail;
! 157: }
! 158:
! 159: bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
! 160: if (bcmp(buf, gem_promhdr, sizeof(gem_promhdr)))
! 161: goto fail;
! 162:
! 163: dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8);
! 164: if (dataoff < 0x1c)
! 165: goto fail;
! 166:
! 167: bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
! 168: if (bcmp(buf, gem_promdat, sizeof(gem_promdat)) ||
! 169: bcmp(buf + PROMDATA_DATA2, gem_promdat2, sizeof(gem_promdat2)))
! 170: goto fail;
! 171:
! 172: vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8);
! 173: if (vpdoff < 0x1c)
! 174: goto fail;
! 175:
! 176: bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
! 177:
! 178: /*
! 179: * The VPD of gem is not in PCI 2.2 standard format. The length
! 180: * in the resource header is in big endian.
! 181: */
! 182: vpd = (struct pci_vpd *)(buf + 3);
! 183: if (!PCI_VPDRES_ISLARGE(buf[0]) ||
! 184: PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD)
! 185: goto fail;
! 186: if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A')
! 187: goto fail;
! 188:
! 189: bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN);
! 190: rv = 0;
! 191:
! 192: fail:
! 193: if (romsize != 0)
! 194: bus_space_unmap(romt, romh, romsize);
! 195:
! 196: address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
! 197: address &= ~PCI_ROM_ENABLE;
! 198: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
! 199:
! 200: return (rv);
! 201: }
! 202:
! 203: void
! 204: gem_attach_pci(struct device *parent, struct device *self, void *aux)
! 205: {
! 206: struct pci_attach_args *pa = aux;
! 207: struct gem_pci_softc *gsc = (void *)self;
! 208: struct gem_softc *sc = &gsc->gsc_gem;
! 209: pci_intr_handle_t ih;
! 210: #ifdef __sparc64__
! 211: /* XXX the following declarations should be elsewhere */
! 212: extern void myetheraddr(u_char *);
! 213: #endif
! 214: const char *intrstr = NULL;
! 215: bus_size_t size;
! 216: int type, gotenaddr = 0;
! 217:
! 218: if (pa->pa_memt) {
! 219: type = PCI_MAPREG_TYPE_MEM;
! 220: sc->sc_bustag = pa->pa_memt;
! 221: } else {
! 222: type = PCI_MAPREG_TYPE_IO;
! 223: sc->sc_bustag = pa->pa_iot;
! 224: }
! 225:
! 226: sc->sc_dmatag = pa->pa_dmat;
! 227:
! 228: sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
! 229:
! 230: if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_GEMNETWORK)
! 231: sc->sc_variant = GEM_SUN_GEM;
! 232: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_ERINETWORK)
! 233: sc->sc_variant = GEM_SUN_ERI;
! 234: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_INTREPID2_GMAC)
! 235: sc->sc_variant = GEM_APPLE_GMAC;
! 236: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_PANGEA_GMAC)
! 237: sc->sc_variant = GEM_APPLE_GMAC;
! 238: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_GMAC)
! 239: sc->sc_variant = GEM_APPLE_GMAC;
! 240: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_UNINORTHGMAC)
! 241: sc->sc_variant = GEM_APPLE_GMAC;
! 242: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_UNINORTH2GMAC)
! 243: sc->sc_variant = GEM_APPLE_GMAC;
! 244: else if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_K2_GMAC)
! 245: sc->sc_variant = GEM_APPLE_K2_GMAC;
! 246:
! 247: #define PCI_GEM_BASEADDR 0x10
! 248: if (pci_mapreg_map(pa, PCI_GEM_BASEADDR, type, 0,
! 249: &gsc->gsc_memt, &gsc->gsc_memh, NULL, &size, 0) != 0) {
! 250: printf(": could not map registers\n");
! 251: return;
! 252: }
! 253:
! 254: sc->sc_bustag = gsc->gsc_memt;
! 255: sc->sc_h1 = gsc->gsc_memh;
! 256:
! 257: if (bus_space_subregion(sc->sc_bustag, sc->sc_h1,
! 258: GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE, &sc->sc_h2)) {
! 259: printf(": unable to create bank 2 subregion\n");
! 260: bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, size);
! 261: return;
! 262: }
! 263:
! 264: if (gem_pci_enaddr(sc, pa) == 0)
! 265: gotenaddr = 1;
! 266:
! 267: #ifdef __sparc64__
! 268: if (!gotenaddr) {
! 269: if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
! 270: sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
! 271: myetheraddr(sc->sc_arpcom.ac_enaddr);
! 272: gotenaddr = 1;
! 273: }
! 274: #endif
! 275: #ifdef __powerpc__
! 276: if (!gotenaddr) {
! 277: pci_ether_hw_addr(pa->pa_pc, sc->sc_arpcom.ac_enaddr);
! 278: gotenaddr = 1;
! 279: }
! 280: #endif
! 281:
! 282: sc->sc_burst = 16; /* XXX */
! 283:
! 284: if (pci_intr_map(pa, &ih) != 0) {
! 285: printf(": couldn't map interrupt\n");
! 286: bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, size);
! 287: return;
! 288: }
! 289: intrstr = pci_intr_string(pa->pa_pc, ih);
! 290: gsc->gsc_ih = pci_intr_establish(pa->pa_pc,
! 291: ih, IPL_NET, gem_intr, sc, self->dv_xname);
! 292: if (gsc->gsc_ih == NULL) {
! 293: printf(": couldn't establish interrupt");
! 294: if (intrstr != NULL)
! 295: printf(" at %s", intrstr);
! 296: printf("\n");
! 297: bus_space_unmap(gsc->gsc_memt, gsc->gsc_memh, size);
! 298: return;
! 299: }
! 300:
! 301: printf(": %s", intrstr);
! 302:
! 303: /*
! 304: * call the main configure
! 305: */
! 306: gem_config(sc);
! 307: }
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