Annotation of sys/dev/pci/if_hme_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_hme_pci.c,v 1.12 2006/12/21 22:13:36 jason Exp $ */
! 2: /* $NetBSD: if_hme_pci.c,v 1.3 2000/12/28 22:59:13 sommerfeld Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2000 Matthew R. Green
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
! 24: * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
! 25: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
! 26: * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
! 27: * 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: * PCI front-end device driver for the HME ethernet device.
! 34: */
! 35:
! 36: #include <sys/param.h>
! 37: #include <sys/systm.h>
! 38: #include <sys/syslog.h>
! 39: #include <sys/device.h>
! 40: #include <sys/malloc.h>
! 41: #include <sys/socket.h>
! 42:
! 43: #include <net/if.h>
! 44: #include <net/if_dl.h>
! 45: #include <net/if_media.h>
! 46:
! 47: #ifdef INET
! 48: #include <netinet/in.h>
! 49: #include <netinet/in_systm.h>
! 50: #include <netinet/in_var.h>
! 51: #include <netinet/ip.h>
! 52: #include <netinet/if_ether.h>
! 53: #endif
! 54:
! 55: #include <dev/mii/mii.h>
! 56: #include <dev/mii/miivar.h>
! 57:
! 58: #ifdef __sparc64__
! 59: #include <machine/autoconf.h>
! 60: #include <dev/ofw/openfirm.h>
! 61: #endif
! 62: #include <machine/cpu.h>
! 63:
! 64: #include <dev/pci/pcivar.h>
! 65: #include <dev/pci/pcireg.h>
! 66: #include <dev/pci/pcidevs.h>
! 67:
! 68: #include <dev/ic/hmevar.h>
! 69:
! 70: struct hme_pci_softc {
! 71: struct hme_softc hsc_hme; /* HME device */
! 72: bus_space_tag_t hsc_memt;
! 73: bus_space_handle_t hsc_memh;
! 74: void *hsc_ih;
! 75: };
! 76:
! 77: int hmematch_pci(struct device *, void *, void *);
! 78: void hmeattach_pci(struct device *, struct device *, void *);
! 79: int hme_pci_enaddr(struct hme_softc *, struct pci_attach_args *);
! 80:
! 81: struct cfattach hme_pci_ca = {
! 82: sizeof(struct hme_pci_softc), hmematch_pci, hmeattach_pci
! 83: };
! 84:
! 85: int
! 86: hmematch_pci(parent, vcf, aux)
! 87: struct device *parent;
! 88: void *vcf;
! 89: void *aux;
! 90: {
! 91: struct pci_attach_args *pa = aux;
! 92:
! 93: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
! 94: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_HME)
! 95: return (1);
! 96:
! 97: return (0);
! 98: }
! 99:
! 100: #define PCI_EBUS2_BOOTROM 0x10
! 101: #define PROMHDR_PTR_DATA 0x18
! 102: #define PROMDATA_PTR_VPD 0x08
! 103: #define PROMDATA_DATA2 0x0a
! 104:
! 105: static const u_int8_t hme_promhdr[] = { 0x55, 0xaa };
! 106: static const u_int8_t hme_promdat[] = {
! 107: 'P', 'C', 'I', 'R',
! 108: PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
! 109: PCI_PRODUCT_SUN_HME & 0xff, PCI_PRODUCT_SUN_HME >> 8
! 110: };
! 111: static const u_int8_t hme_promdat2[] = {
! 112: 0x18, 0x00, /* structure length */
! 113: 0x00, /* structure revision */
! 114: 0x00, /* interface revision */
! 115: PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */
! 116: PCI_CLASS_NETWORK /* class code */
! 117: };
! 118:
! 119: int
! 120: hme_pci_enaddr(struct hme_softc *sc, struct pci_attach_args *hpa)
! 121: {
! 122: struct pci_attach_args epa;
! 123: struct pci_vpd *vpd;
! 124: pcireg_t cl, id;
! 125: bus_space_handle_t romh;
! 126: bus_space_tag_t romt;
! 127: bus_size_t romsize = 0;
! 128: u_int8_t buf[32];
! 129: int dataoff, vpdoff;
! 130:
! 131: /*
! 132: * Dig out VPD (vital product data) and acquire Ethernet address.
! 133: * The VPD of hme resides in the Boot PROM (PCI FCode) attached
! 134: * to the EBus interface.
! 135: * ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)
! 136: * chapter 2 describes the data structure.
! 137: */
! 138:
! 139: /* get a PCI tag for the EBus bridge (function 0 of the same device) */
! 140: epa = *hpa;
! 141: epa.pa_tag = pci_make_tag(hpa->pa_pc, hpa->pa_bus, hpa->pa_device, 0);
! 142: cl = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_CLASS_REG);
! 143: id = pci_conf_read(epa.pa_pc, epa.pa_tag, PCI_ID_REG);
! 144:
! 145: if (PCI_CLASS(cl) != PCI_CLASS_BRIDGE ||
! 146: PCI_PRODUCT(id) != PCI_PRODUCT_SUN_EBUS)
! 147: goto fail;
! 148:
! 149: if (pci_mapreg_map(&epa, PCI_EBUS2_BOOTROM, PCI_MAPREG_TYPE_MEM, 0,
! 150: &romt, &romh, 0, &romsize, 0))
! 151: goto fail;
! 152:
! 153: bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
! 154: if (bcmp(buf, hme_promhdr, sizeof(hme_promhdr)))
! 155: goto fail;
! 156:
! 157: dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8);
! 158: if (dataoff < 0x1c)
! 159: goto fail;
! 160:
! 161: bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
! 162: if (bcmp(buf, hme_promdat, sizeof(hme_promdat)) ||
! 163: bcmp(buf + PROMDATA_DATA2, hme_promdat2, sizeof(hme_promdat2)))
! 164: goto fail;
! 165:
! 166: vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8);
! 167: if (vpdoff < 0x1c)
! 168: goto fail;
! 169:
! 170: /*
! 171: * The VPD of hme is not in PCI 2.2 standard format. The length
! 172: * in the resource header is in big endian, and resources are not
! 173: * properly terminated (only one resource and no end tag).
! 174: */
! 175: bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
! 176:
! 177: /* XXX TODO: Get the data from VPD */
! 178: vpd = (struct pci_vpd *)(buf + 3);
! 179: if (!PCI_VPDRES_ISLARGE(buf[0]) ||
! 180: PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD)
! 181: goto fail;
! 182: if (vpd->vpd_key0 != 'N' || vpd->vpd_key1 != 'A')
! 183: goto fail;
! 184:
! 185: bcopy(buf + 6, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN);
! 186: sc->sc_arpcom.ac_enaddr[5] += hpa->pa_device;
! 187: bus_space_unmap(romt, romh, romsize);
! 188: return (0);
! 189:
! 190: fail:
! 191: if (romsize != 0)
! 192: bus_space_unmap(romt, romh, romsize);
! 193: return (-1);
! 194: }
! 195:
! 196: void
! 197: hmeattach_pci(parent, self, aux)
! 198: struct device *parent, *self;
! 199: void *aux;
! 200: {
! 201: struct pci_attach_args *pa = aux;
! 202: struct hme_pci_softc *hsc = (void *)self;
! 203: struct hme_softc *sc = &hsc->hsc_hme;
! 204: pci_intr_handle_t ih;
! 205: /* XXX the following declarations should be elsewhere */
! 206: extern void myetheraddr(u_char *);
! 207: pcireg_t csr;
! 208: const char *intrstr = NULL;
! 209: bus_size_t size;
! 210: int type, gotenaddr = 0;
! 211:
! 212: /*
! 213: * enable io/memory-space accesses. this is kinda of gross; but
! 214: * the hme comes up with neither IO space enabled, or memory space.
! 215: */
! 216: if (pa->pa_memt)
! 217: pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
! 218: if (pa->pa_iot)
! 219: pa->pa_flags |= PCI_FLAGS_IO_ENABLED;
! 220: csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
! 221: if (pa->pa_memt) {
! 222: type = PCI_MAPREG_TYPE_MEM;
! 223: csr |= PCI_COMMAND_MEM_ENABLE;
! 224: sc->sc_bustag = pa->pa_memt;
! 225: } else {
! 226: type = PCI_MAPREG_TYPE_IO;
! 227: csr |= PCI_COMMAND_IO_ENABLE;
! 228: sc->sc_bustag = pa->pa_iot;
! 229: }
! 230: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
! 231: csr | PCI_COMMAND_MEM_ENABLE);
! 232:
! 233: sc->sc_dmatag = pa->pa_dmat;
! 234:
! 235: sc->sc_pci = 1; /* XXXXX should all be done in bus_dma. */
! 236: /*
! 237: * Map five register banks:
! 238: *
! 239: * bank 0: HME SEB registers: +0x0000
! 240: * bank 1: HME ETX registers: +0x2000
! 241: * bank 2: HME ERX registers: +0x4000
! 242: * bank 3: HME MAC registers: +0x6000
! 243: * bank 4: HME MIF registers: +0x7000
! 244: *
! 245: */
! 246:
! 247: #define PCI_HME_BASEADDR 0x10
! 248: if (pci_mapreg_map(pa, PCI_HME_BASEADDR, type, 0,
! 249: &hsc->hsc_memt, &hsc->hsc_memh, NULL, &size, 0) != 0) {
! 250: printf(": could not map hme registers\n");
! 251: return;
! 252: }
! 253: sc->sc_seb = hsc->hsc_memh;
! 254: bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x2000, 0x2000,
! 255: &sc->sc_etx);
! 256: bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x4000, 0x2000,
! 257: &sc->sc_erx);
! 258: bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x6000, 0x1000,
! 259: &sc->sc_mac);
! 260: bus_space_subregion(sc->sc_bustag, hsc->hsc_memh, 0x7000, 0x1000,
! 261: &sc->sc_mif);
! 262:
! 263: if (hme_pci_enaddr(sc, pa) == 0)
! 264: gotenaddr = 1;
! 265:
! 266: #ifdef __sparc64__
! 267: if (!gotenaddr) {
! 268: if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address",
! 269: sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0)
! 270: myetheraddr(sc->sc_arpcom.ac_enaddr);
! 271: gotenaddr = 1;
! 272: }
! 273: #endif
! 274: #ifdef __powerpc__
! 275: if (!gotenaddr) {
! 276: pci_ether_hw_addr(pa->pa_pc, sc->sc_arpcom.ac_enaddr);
! 277: gotenaddr = 1;
! 278: }
! 279: #endif
! 280:
! 281: sc->sc_burst = 16; /* XXX */
! 282:
! 283: if (pci_intr_map(pa, &ih) != 0) {
! 284: printf(": couldn't map interrupt\n");
! 285: bus_space_unmap(hsc->hsc_memt, hsc->hsc_memh, size);
! 286: return;
! 287: }
! 288: intrstr = pci_intr_string(pa->pa_pc, ih);
! 289: hsc->hsc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET,
! 290: hme_intr, sc, self->dv_xname);
! 291: if (hsc->hsc_ih == NULL) {
! 292: printf(": couldn't establish interrupt");
! 293: if (intrstr != NULL)
! 294: printf(" at %s", intrstr);
! 295: printf("\n");
! 296: bus_space_unmap(hsc->hsc_memt, hsc->hsc_memh, size);
! 297: return;
! 298: }
! 299:
! 300: printf(": %s", intrstr);
! 301:
! 302: /*
! 303: * call the main configure
! 304: */
! 305: hme_config(sc);
! 306: }
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