Annotation of sys/dev/pci/if_epic_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_epic_pci.c,v 1.5 2006/04/20 20:31:12 miod Exp $ */
! 2: /* $NetBSD: if_epic_pci.c,v 1.28 2005/02/27 00:27:32 perry Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998, 1999 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.
! 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 Standard Microsystems Corp. 83C170
! 43: * Ethernet PCI Integrated Controller (EPIC/100) driver.
! 44: */
! 45:
! 46: #if 0
! 47: #include <sys/cdefs.h>
! 48: __KERNEL_RCSID(0, "$NetBSD: if_epic_pci.c,v 1.28 2005/02/27 00:27:32 perry Exp $");
! 49: #endif
! 50:
! 51: #include <sys/param.h>
! 52: #include <sys/systm.h>
! 53: #include <sys/mbuf.h>
! 54: #include <sys/malloc.h>
! 55: #include <sys/kernel.h>
! 56: #include <sys/socket.h>
! 57: #include <sys/ioctl.h>
! 58: #include <sys/errno.h>
! 59: #include <sys/device.h>
! 60:
! 61: #include <net/if.h>
! 62: #include <net/if_dl.h>
! 63: #include <net/if_types.h>
! 64:
! 65: #ifdef INET
! 66: #include <netinet/in.h>
! 67: #include <netinet/in_systm.h>
! 68: #include <netinet/in_var.h>
! 69: #include <netinet/ip.h>
! 70: #include <netinet/if_ether.h>
! 71: #endif
! 72:
! 73: #include <net/if_media.h>
! 74:
! 75: #include <machine/bus.h>
! 76: #include <machine/intr.h>
! 77:
! 78: #include <dev/mii/miivar.h>
! 79:
! 80: #include <dev/ic/smc83c170reg.h>
! 81: #include <dev/ic/smc83c170var.h>
! 82:
! 83: #include <dev/pci/pcivar.h>
! 84: #include <dev/pci/pcireg.h>
! 85: #include <dev/pci/pcidevs.h>
! 86:
! 87: /*
! 88: * PCI configuration space registers used by the EPIC.
! 89: */
! 90: #define EPIC_PCI_IOBA 0x10 /* i/o mapped base */
! 91: #define EPIC_PCI_MMBA 0x14 /* memory mapped base */
! 92:
! 93: struct epic_pci_softc {
! 94: struct epic_softc sc_epic; /* real EPIC softc */
! 95:
! 96: /* PCI-specific goo. */
! 97: void *sc_ih; /* interrupt handle */
! 98: };
! 99:
! 100: int epic_pci_match(struct device *, void *, void *);
! 101: void epic_pci_attach(struct device *, struct device *, void *);
! 102:
! 103: struct cfattach epic_pci_ca = {
! 104: sizeof(struct epic_pci_softc), epic_pci_match, epic_pci_attach
! 105: };
! 106:
! 107: const struct pci_matchid epic_pci_devices[] = {
! 108: { PCI_VENDOR_SMC, PCI_PRODUCT_SMC_83C170 },
! 109: { PCI_VENDOR_SMC, PCI_PRODUCT_SMC_83C175 },
! 110: };
! 111:
! 112: static const struct epic_pci_subsys_info {
! 113: pcireg_t subsysid;
! 114: int flags;
! 115: } epic_pci_subsys_info[] = {
! 116: { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa015), /* SMC9432BTX */
! 117: EPIC_HAS_BNC },
! 118: { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa024), /* SMC9432BTX1 */
! 119: EPIC_HAS_BNC },
! 120: { PCI_ID_CODE(PCI_VENDOR_SMC, 0xa016), /* SMC9432FTX */
! 121: EPIC_HAS_MII_FIBER | EPIC_DUPLEXLED_ON_694 },
! 122: { 0xffffffff,
! 123: 0 }
! 124: };
! 125:
! 126: static const struct epic_pci_subsys_info *
! 127: epic_pci_subsys_lookup(const struct pci_attach_args *pa)
! 128: {
! 129: pci_chipset_tag_t pc = pa->pa_pc;
! 130: pcireg_t reg;
! 131: const struct epic_pci_subsys_info *esp;
! 132:
! 133: reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
! 134:
! 135: for (esp = epic_pci_subsys_info; esp->subsysid != 0xffffffff; esp++)
! 136: if (esp->subsysid == reg)
! 137: return (esp);
! 138:
! 139: return (NULL);
! 140: }
! 141:
! 142: int
! 143: epic_pci_match(struct device *parent, void *match, void *aux)
! 144: {
! 145: return (pci_matchbyid((struct pci_attach_args *)aux, epic_pci_devices,
! 146: sizeof(epic_pci_devices)/sizeof(epic_pci_devices[0])));
! 147: }
! 148:
! 149: void
! 150: epic_pci_attach(struct device *parent, struct device *self, void *aux)
! 151: {
! 152: struct epic_pci_softc *psc = (struct epic_pci_softc *)self;
! 153: struct epic_softc *sc = &psc->sc_epic;
! 154: struct pci_attach_args *pa = aux;
! 155: pci_chipset_tag_t pc = pa->pa_pc;
! 156: pci_intr_handle_t ih;
! 157: const char *intrstr = NULL;
! 158: const struct epic_pci_subsys_info *esp;
! 159: bus_space_tag_t iot, memt;
! 160: bus_space_handle_t ioh, memh;
! 161: pcireg_t reg;
! 162: int pmreg, ioh_valid, memh_valid;
! 163:
! 164: if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
! 165: reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR);
! 166: switch (reg & PCI_PMCSR_STATE_MASK) {
! 167: case PCI_PMCSR_STATE_D1:
! 168: case PCI_PMCSR_STATE_D2:
! 169: printf(": waking up from power state D%d\n",
! 170: reg & PCI_PMCSR_STATE_MASK);
! 171: pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
! 172: (reg & ~PCI_PMCSR_STATE_MASK) |
! 173: PCI_PMCSR_STATE_D0);
! 174: break;
! 175: case PCI_PMCSR_STATE_D3:
! 176: /*
! 177: * IO and MEM are disabled. We can't enable
! 178: * the card because the BARs might be invalid.
! 179: */
! 180: printf(
! 181: ": unable to wake up from power state D3, "
! 182: "reboot required.\n");
! 183: pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
! 184: (reg & ~PCI_PMCSR_STATE_MASK) |
! 185: PCI_PMCSR_STATE_D0);
! 186: return;
! 187: }
! 188: }
! 189:
! 190: /*
! 191: * Map the device.
! 192: */
! 193: ioh_valid = (pci_mapreg_map(pa, EPIC_PCI_IOBA,
! 194: PCI_MAPREG_TYPE_IO, 0,
! 195: &iot, &ioh, NULL, NULL, 0) == 0);
! 196: memh_valid = (pci_mapreg_map(pa, EPIC_PCI_MMBA,
! 197: PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
! 198: &memt, &memh, NULL, NULL, 0) == 0);
! 199:
! 200: if (memh_valid) {
! 201: sc->sc_st = memt;
! 202: sc->sc_sh = memh;
! 203: } else if (ioh_valid) {
! 204: sc->sc_st = iot;
! 205: sc->sc_sh = ioh;
! 206: } else {
! 207: printf(": unable to map device registers\n");
! 208: return;
! 209: }
! 210:
! 211: sc->sc_dmat = pa->pa_dmat;
! 212:
! 213: /*
! 214: * Map and establish our interrupt.
! 215: */
! 216: if (pci_intr_map(pa, &ih)) {
! 217: printf(": unable to map interrupt\n");
! 218: return;
! 219: }
! 220: intrstr = pci_intr_string(pc, ih);
! 221: psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc,
! 222: self->dv_xname);
! 223: if (psc->sc_ih == NULL) {
! 224: printf(": unable to establish interrupt");
! 225: if (intrstr != NULL)
! 226: printf(" at %s", intrstr);
! 227: printf("\n");
! 228: return;
! 229: }
! 230:
! 231: esp = epic_pci_subsys_lookup(pa);
! 232: if (esp)
! 233: sc->sc_hwflags = esp->flags;
! 234:
! 235: /*
! 236: * Finish off the attach.
! 237: */
! 238: epic_attach(sc, intrstr);
! 239: }
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