Annotation of sys/dev/pci/if_en_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_en_pci.c,v 1.11 2005/09/11 18:17:08 mickey Exp $ */
! 2:
! 3: /*
! 4: *
! 5: * Copyright (c) 1996 Charles D. Cranor and Washington University.
! 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. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by Charles D. Cranor and
! 19: * Washington University.
! 20: * 4. The name of the author may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 32: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: /*
! 36: *
! 37: * i f _ e n _ p c i . c
! 38: *
! 39: * author: Chuck Cranor <chuck@ccrc.wustl.edu>
! 40: * started: spring, 1996.
! 41: *
! 42: * PCI glue for the eni155p card.
! 43: */
! 44:
! 45: #include <sys/param.h>
! 46: #include <sys/systm.h>
! 47: #include <sys/device.h>
! 48: #include <sys/mbuf.h>
! 49: #include <sys/socket.h>
! 50: #include <sys/socketvar.h>
! 51:
! 52: #include <net/if.h>
! 53:
! 54: #include <dev/pci/pcivar.h>
! 55: #include <dev/pci/pcireg.h>
! 56: #include <dev/pci/pcidevs.h>
! 57:
! 58: #include <dev/ic/midwayreg.h>
! 59: #include <dev/ic/midwayvar.h>
! 60:
! 61:
! 62: /*
! 63: * local structures
! 64: */
! 65:
! 66: struct en_pci_softc {
! 67: /* bus independent stuff */
! 68: struct en_softc esc; /* includes "device" structure */
! 69:
! 70: /* PCI bus glue */
! 71: void *sc_ih; /* interrupt handle */
! 72: pci_chipset_tag_t en_pc; /* for PCI calls */
! 73:
! 74: };
! 75:
! 76: /*
! 77: * local defines (PCI specific stuff)
! 78: */
! 79:
! 80: /*
! 81: * address of config base memory address register in PCI config space
! 82: * (this is card specific)
! 83: */
! 84:
! 85: #define PCI_CBMA 0x10
! 86:
! 87: /*
! 88: * tonga (pci bridge). ENI cards only!
! 89: */
! 90:
! 91: #define EN_TONGA 0x60 /* PCI config addr of tonga reg */
! 92:
! 93: #define TONGA_SWAP_DMA 0x80 /* endian swap control */
! 94: #define TONGA_SWAP_BYTE 0x40
! 95: #define TONGA_SWAP_WORD 0x20
! 96:
! 97: /*
! 98: * adaptec pci bridge. ADP cards only!
! 99: */
! 100:
! 101: #define ADP_PCIREG 0x050040 /* PCI control register */
! 102:
! 103: #define ADP_PCIREG_RESET 0x1 /* reset card */
! 104: #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
! 105: #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
! 106: #define ADP_PCIREG_SWAP_DMA 0x8 /* swap bytes on DMA */
! 107:
! 108: /*
! 109: * prototypes
! 110: */
! 111:
! 112: static int en_pci_match(struct device *, void *, void *);
! 113: static void en_pci_attach(struct device *, struct device *, void *);
! 114:
! 115: /*
! 116: * PCI autoconfig attachments
! 117: */
! 118:
! 119: struct cfattach en_pci_ca = {
! 120: sizeof(struct en_pci_softc), en_pci_match, en_pci_attach,
! 121: };
! 122:
! 123: #if !defined(MIDWAY_ENIONLY)
! 124:
! 125: static void adp_busreset(void *);
! 126:
! 127: /*
! 128: * bus specific reset function [ADP only!]
! 129: */
! 130:
! 131: static void adp_busreset(v)
! 132:
! 133: void *v;
! 134:
! 135: {
! 136: struct en_softc *sc = (struct en_softc *) v;
! 137: u_int32_t dummy;
! 138:
! 139: bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET);
! 140: DELAY(1000); /* let it reset */
! 141: dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
! 142: bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
! 143: (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE));
! 144: dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
! 145: if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) !=
! 146: (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA))
! 147: printf("adp_busreset: Adaptec ATM did NOT reset!\n");
! 148:
! 149: }
! 150: #endif
! 151:
! 152: /***********************************************************************/
! 153:
! 154: /*
! 155: * autoconfig stuff
! 156: */
! 157:
! 158: static int en_pci_match(parent, match, aux)
! 159:
! 160: struct device *parent;
! 161: void *match;
! 162: void *aux;
! 163:
! 164: {
! 165: struct pci_attach_args *pa = (struct pci_attach_args *) aux;
! 166:
! 167: #if !defined(MIDWAY_ADPONLY)
! 168: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_EFFICIENTNETS &&
! 169: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
! 170: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
! 171: return 1;
! 172: #endif
! 173:
! 174: #if !defined(MIDWAY_ENIONLY)
! 175: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP &&
! 176: (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5900 ||
! 177: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADP_AIC5905))
! 178: return 1;
! 179: #endif
! 180:
! 181: return 0;
! 182: }
! 183:
! 184:
! 185: static void en_pci_attach(parent, self, aux)
! 186:
! 187: struct device *parent, *self;
! 188: void *aux;
! 189:
! 190: {
! 191: struct en_softc *sc = (void *)self;
! 192: struct en_pci_softc *scp = (void *)self;
! 193: struct pci_attach_args *pa = aux;
! 194: pci_intr_handle_t ih;
! 195: const char *intrstr;
! 196: int retval;
! 197:
! 198: sc->is_adaptec = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ADP) ? 1 : 0;
! 199: scp->en_pc = pa->pa_pc;
! 200:
! 201: /*
! 202: * interrupt map
! 203: */
! 204:
! 205: if (pci_intr_map(pa, &ih)) {
! 206: printf(": couldn't map interrupt\n");
! 207: return;
! 208: }
! 209: intrstr = pci_intr_string(scp->en_pc, ih);
! 210: scp->sc_ih = pci_intr_establish(scp->en_pc, ih, IPL_NET, en_intr, sc,
! 211: sc->sc_dev.dv_xname);
! 212: if (scp->sc_ih == NULL) {
! 213: printf(": couldn't establish interrupt");
! 214: if (intrstr != NULL)
! 215: printf(" at %s", intrstr);
! 216: printf("\n");
! 217: return;
! 218: }
! 219: sc->ipl = 1; /* XXX */
! 220:
! 221: /*
! 222: * memory map
! 223: */
! 224:
! 225: retval = pci_mapreg_map(pa, PCI_CBMA, PCI_MAPREG_TYPE_MEM, 0,
! 226: &sc->en_memt, &sc->en_base, NULL, &sc->en_obmemsz, 0);
! 227:
! 228: if (retval) {
! 229: printf(": couldn't map memory\n");
! 230: return;
! 231: }
! 232:
! 233: printf(": %s\n", intrstr);
! 234:
! 235: /*
! 236: * set up pci bridge
! 237: */
! 238:
! 239: #if !defined(MIDWAY_ENIONLY)
! 240: if (sc->is_adaptec) {
! 241: sc->en_busreset = adp_busreset;
! 242: adp_busreset(sc);
! 243: }
! 244: #endif
! 245:
! 246: #if !defined(MIDWAY_ADPONLY)
! 247: if (!sc->is_adaptec) {
! 248: sc->en_busreset = NULL;
! 249: pci_conf_write(scp->en_pc, pa->pa_tag, EN_TONGA,
! 250: (TONGA_SWAP_DMA|TONGA_SWAP_WORD));
! 251: }
! 252: #endif
! 253:
! 254: /*
! 255: * done PCI specific stuff
! 256: */
! 257:
! 258: en_attach(sc);
! 259:
! 260: }
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