Annotation of sys/dev/isa/i82365_isa.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: i82365_isa.c,v 1.20 2005/03/25 16:41:18 mickey Exp $ */
! 2: /* $NetBSD: i82365_isa.c,v 1.11 1998/06/09 07:25:00 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1997 Marc Horowitz. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by Marc Horowitz.
! 18: * 4. The name of the author may not be used to endorse or promote products
! 19: * derived from this software without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 22: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 23: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 24: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 25: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 26: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 27: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 28: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 29: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 30: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 31: */
! 32:
! 33: #include <sys/types.h>
! 34: #include <sys/param.h>
! 35: #include <sys/systm.h>
! 36: #include <sys/kernel.h>
! 37: #include <sys/device.h>
! 38: #include <sys/extent.h>
! 39: #include <sys/malloc.h>
! 40:
! 41: #include <machine/bus.h>
! 42: #include <machine/intr.h>
! 43:
! 44: #include <dev/isa/isareg.h>
! 45: #include <dev/isa/isavar.h>
! 46:
! 47: #include <dev/pcmcia/pcmciareg.h>
! 48: #include <dev/pcmcia/pcmciavar.h>
! 49: #include <dev/pcmcia/pcmciachip.h>
! 50:
! 51: #include <dev/ic/i82365reg.h>
! 52: #include <dev/ic/i82365var.h>
! 53: #include <dev/isa/i82365_isavar.h>
! 54:
! 55: #ifdef PCICISADEBUG
! 56: #define DPRINTF(arg) printf arg;
! 57: #else
! 58: #define DPRINTF(arg)
! 59: #endif
! 60:
! 61: int pcic_isa_probe(struct device *, void *, void *);
! 62: void pcic_isa_attach(struct device *, struct device *, void *);
! 63:
! 64: struct cfattach pcic_isa_ca = {
! 65: sizeof(struct pcic_softc), pcic_isa_probe, pcic_isa_attach
! 66: };
! 67:
! 68: static struct pcmcia_chip_functions pcic_isa_functions = {
! 69: pcic_chip_mem_alloc,
! 70: pcic_chip_mem_free,
! 71: pcic_chip_mem_map,
! 72: pcic_chip_mem_unmap,
! 73:
! 74: pcic_chip_io_alloc,
! 75: pcic_chip_io_free,
! 76: pcic_chip_io_map,
! 77: pcic_chip_io_unmap,
! 78:
! 79: pcic_isa_chip_intr_establish,
! 80: pcic_isa_chip_intr_disestablish,
! 81: pcic_isa_chip_intr_string,
! 82:
! 83: pcic_chip_socket_enable,
! 84: pcic_chip_socket_disable,
! 85: };
! 86:
! 87: int
! 88: pcic_isa_probe(parent, match, aux)
! 89: struct device *parent;
! 90: void *match, *aux;
! 91: {
! 92: struct isa_attach_args *ia = aux;
! 93: bus_space_tag_t memt = ia->ia_memt, iot = ia->ia_iot;
! 94: bus_space_handle_t ioh, memh;
! 95: bus_size_t msize;
! 96: int val, found;
! 97:
! 98: /* Disallow wildcarded i/o address. */
! 99: if (ia->ia_iobase == -1 /* ISACF_PORT_DEFAULT */)
! 100: return (0);
! 101:
! 102: if (bus_space_map(iot, ia->ia_iobase, PCIC_IOSIZE, 0, &ioh))
! 103: return (0);
! 104:
! 105: if (ia->ia_msize == -1)
! 106: ia->ia_msize = PCIC_MEMSIZE;
! 107:
! 108: msize = ia->ia_msize;
! 109: if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) {
! 110: if (ia->ia_msize > PCIC_MEMSIZE &&
! 111: !bus_space_map(memt, ia->ia_maddr, PCIC_MEMSIZE, 0, &memh))
! 112: msize = PCIC_MEMSIZE;
! 113: else
! 114: return (0);
! 115: }
! 116: found = 0;
! 117:
! 118: /*
! 119: * this could be done with a loop, but it would violate the
! 120: * abstraction
! 121: */
! 122:
! 123: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C0SA + PCIC_IDENT);
! 124: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
! 125: if (pcic_ident_ok(val))
! 126: found++;
! 127:
! 128: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C0SB + PCIC_IDENT);
! 129: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
! 130: if (pcic_ident_ok(val))
! 131: found++;
! 132:
! 133: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C1SA + PCIC_IDENT);
! 134: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
! 135: if (pcic_ident_ok(val))
! 136: found++;
! 137:
! 138: bus_space_write_1(iot, ioh, PCIC_REG_INDEX, C1SB + PCIC_IDENT);
! 139: val = bus_space_read_1(iot, ioh, PCIC_REG_DATA);
! 140: if (pcic_ident_ok(val))
! 141: found++;
! 142:
! 143: bus_space_unmap(iot, ioh, PCIC_IOSIZE);
! 144: bus_space_unmap(memt, memh, msize);
! 145:
! 146: if (!found)
! 147: return (0);
! 148: ia->ia_iosize = PCIC_IOSIZE;
! 149: ia->ia_msize = msize;
! 150: return (1);
! 151: }
! 152:
! 153: void
! 154: pcic_isa_attach(parent, self, aux)
! 155: struct device *parent, *self;
! 156: void *aux;
! 157: {
! 158: struct pcic_softc *sc = (void *)self;
! 159: struct pcic_handle *h;
! 160: struct isa_attach_args *ia = aux;
! 161: isa_chipset_tag_t ic = ia->ia_ic;
! 162: bus_space_tag_t iot = ia->ia_iot;
! 163: bus_space_tag_t memt = ia->ia_memt;
! 164: bus_space_handle_t ioh;
! 165: bus_space_handle_t memh;
! 166: int irq, i;
! 167:
! 168: /* Map i/o space. */
! 169: if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) {
! 170: printf(": can't map i/o space\n");
! 171: return;
! 172: }
! 173:
! 174: /* Map mem space. */
! 175: if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) {
! 176: printf(": can't map mem space\n");
! 177: return;
! 178: }
! 179:
! 180: sc->membase = ia->ia_maddr;
! 181: sc->subregionmask = (1 << (ia->ia_msize / PCIC_MEM_PAGESIZE)) - 1;
! 182:
! 183: sc->intr_est = ic;
! 184: sc->pct = (pcmcia_chipset_tag_t)&pcic_isa_functions;
! 185:
! 186: sc->iot = iot;
! 187: sc->ioh = ioh;
! 188: sc->memt = memt;
! 189: sc->memh = memh;
! 190:
! 191: printf("\n");
! 192:
! 193: pcic_attach(sc);
! 194: pcic_isa_bus_width_probe(sc, iot, ioh, ia->ia_iobase, ia->ia_iosize);
! 195: pcic_attach_sockets(sc);
! 196:
! 197: /*
! 198: * Allocate an irq. It will be used by both controllers. I could
! 199: * use two different interrupts, but interrupts are relatively
! 200: * scarce, shareable, and for PCIC controllers, very infrequent.
! 201: */
! 202: irq = ia->ia_irq;
! 203: if (irq == IRQUNK)
! 204: irq = pcic_intr_find(sc, IST_EDGE);
! 205:
! 206: if (irq) {
! 207: sc->ih = isa_intr_establish(ic, irq, IST_EDGE, IPL_TTY,
! 208: pcic_intr, sc, sc->dev.dv_xname);
! 209: if (!sc->ih)
! 210: irq = 0;
! 211: }
! 212: sc->irq = irq;
! 213:
! 214: if (irq) {
! 215: printf("%s: irq %d, ", sc->dev.dv_xname, irq);
! 216:
! 217: /* Set up the pcic to interrupt on card detect. */
! 218: for (i = 0; i < PCIC_NSLOTS; i++) {
! 219: h = &sc->handle[i];
! 220: if (h->flags & PCIC_FLAG_SOCKETP) {
! 221: pcic_write(h, PCIC_CSC_INTR,
! 222: (sc->irq << PCIC_CSC_INTR_IRQ_SHIFT) |
! 223: PCIC_CSC_INTR_CD_ENABLE);
! 224: powerhook_establish(pcic_power, h);
! 225: }
! 226: }
! 227: } else
! 228: printf("%s: no irq, ", sc->dev.dv_xname);
! 229:
! 230: printf("polling enabled\n");
! 231: if (sc->poll_established == 0) {
! 232: timeout_set(&sc->poll_timeout, pcic_poll_intr, sc);
! 233: timeout_add(&sc->poll_timeout, hz / 2);
! 234: sc->poll_established = 1;
! 235: }
! 236: }
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