Annotation of sys/dev/pci/i82365_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: i82365_pci.c,v 1.9 2005/08/09 04:10:11 mickey Exp $ */
! 2: /* $NetBSD: i82365_pci.c,v 1.11 2000/02/24 03:42:44 itohy 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: /*
! 34: * XXX this driver frontend is *very* i386 dependent and should be relocated
! 35: */
! 36:
! 37: #include <sys/types.h>
! 38: #include <sys/param.h>
! 39: #include <sys/systm.h>
! 40: #include <sys/kernel.h>
! 41: #include <sys/device.h>
! 42:
! 43: #include <dev/ic/i82365reg.h>
! 44: #include <dev/ic/i82365var.h>
! 45:
! 46: #include <dev/pci/pcivar.h>
! 47: #include <dev/pci/pcireg.h>
! 48: #include <dev/pci/pcidevs.h>
! 49: #include <dev/pci/i82365_pcivar.h>
! 50:
! 51: #include <dev/isa/isavar.h>
! 52: #include <dev/isa/i82365_isavar.h>
! 53:
! 54: /*
! 55: * PCI constants.
! 56: * XXX These should be in a common file!
! 57: */
! 58: #define PCI_CBIO 0x10 /* Configuration Base IO Address */
! 59:
! 60: int pcic_pci_match(struct device *, void *, void *);
! 61: void pcic_pci_attach(struct device *, struct device *, void *);
! 62:
! 63: struct cfattach pcic_pci_ca = {
! 64: sizeof(struct pcic_pci_softc), pcic_pci_match, pcic_pci_attach
! 65: };
! 66:
! 67: static struct pcmcia_chip_functions pcic_pci_functions = {
! 68: pcic_chip_mem_alloc,
! 69: pcic_chip_mem_free,
! 70: pcic_chip_mem_map,
! 71: pcic_chip_mem_unmap,
! 72:
! 73: pcic_chip_io_alloc,
! 74: pcic_chip_io_free,
! 75: pcic_chip_io_map,
! 76: pcic_chip_io_unmap,
! 77:
! 78: /* XXX */
! 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_pci_match(parent, match, aux)
! 89: struct device *parent;
! 90: void *match;
! 91: void *aux;
! 92: {
! 93: struct pci_attach_args *pa = (struct pci_attach_args *) aux;
! 94:
! 95: if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CIRRUS &&
! 96: PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CIRRUS_CL_PD6729)
! 97: return (1);
! 98: return (0);
! 99: }
! 100:
! 101: void pcic_isa_config_interrupts(struct device *);
! 102:
! 103: void
! 104: pcic_pci_attach(parent, self, aux)
! 105: struct device *parent, *self;
! 106: void *aux;
! 107: {
! 108: struct pcic_softc *sc = (void *) self;
! 109: struct pcic_pci_softc *psc = (void *) self;
! 110: struct pcic_handle *h;
! 111: struct pci_attach_args *pa = aux;
! 112: pci_chipset_tag_t pc = pa->pa_pc;
! 113: bus_space_tag_t memt = pa->pa_memt;
! 114: bus_space_handle_t memh;
! 115: bus_size_t size;
! 116: int irq, i;
! 117:
! 118: if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
! 119: &sc->iot, &sc->ioh, NULL, &size, 0)) {
! 120: printf(": can't map i/o space\n");
! 121: return;
! 122: }
! 123:
! 124: /*
! 125: * XXX need some memory for mapping pcmcia cards into. Ideally, this
! 126: * would be completely dynamic. Practically this doesn't work,
! 127: * because the extent mapper doesn't know about all the devices all
! 128: * the time. With ISA we could finesse the issue by specifying the
! 129: * memory region in the config line. We can't do that here, so we
! 130: * cheat for now. Jason Thorpe, you are my Savior, come up with a fix
! 131: * :-)
! 132: */
! 133:
! 134: /* Map mem space. */
! 135: if (bus_space_map(memt, 0xd0000, 0x10000, 0, &memh)) {
! 136: printf(": can't map mem space");
! 137: bus_space_unmap(sc->iot, sc->ioh, size);
! 138: return;
! 139: }
! 140:
! 141: sc->membase = 0xd0000;
! 142: sc->subregionmask = (1 << (0x10000 / PCIC_MEM_PAGESIZE)) - 1;
! 143:
! 144: /* same deal for io allocation */
! 145:
! 146: sc->iobase = 0x400;
! 147: sc->iosize = 0xbff;
! 148:
! 149: /* end XXX */
! 150:
! 151: sc->pct = (pcmcia_chipset_tag_t) & pcic_pci_functions;
! 152:
! 153: sc->memt = memt;
! 154: sc->memh = memh;
! 155:
! 156: printf("\n");
! 157: pcic_attach(sc);
! 158: pcic_attach_sockets(sc);
! 159:
! 160: /*
! 161: * Check to see if we're using PCI or ISA interrupts. I don't
! 162: * know of any i386 systems that use the 6729 in PCI interrupt
! 163: * mode, but maybe when the PCMCIA code runs on other platforms
! 164: * we'll need to fix this.
! 165: */
! 166: pcic_write(&sc->handle[0], PCIC_CIRRUS_EXTENDED_INDEX,
! 167: PCIC_CIRRUS_EXT_CONTROL_1);
! 168: if ((pcic_read(&sc->handle[0], PCIC_CIRRUS_EXTENDED_DATA) &
! 169: PCIC_CIRRUS_EXT_CONTROL_1_PCI_INTR_MASK)) {
! 170: printf("%s: PCI interrupts not supported\n",
! 171: sc->dev.dv_xname);
! 172: return;
! 173: }
! 174:
! 175: psc->intr_est = pcic_pci_machdep_intr_est(pc);
! 176:
! 177: irq = pcic_intr_find(sc, IST_EDGE);
! 178:
! 179: /* Map and establish the interrupt. */
! 180: if (irq) {
! 181: sc->ih = pcic_pci_machdep_pcic_intr_establish(sc, pcic_intr);
! 182: if (sc->ih == NULL) {
! 183: printf("%s: couldnt map interrupt\n", sc->dev.dv_xname);
! 184: bus_space_unmap(memt, memh, 0x10000);
! 185: bus_space_unmap(sc->iot, sc->ioh, size);
! 186: return;
! 187: }
! 188: }
! 189: sc->irq = irq;
! 190:
! 191: if (irq) {
! 192: printf("%s: irq %d, ", sc->dev.dv_xname, irq);
! 193:
! 194: /* Set up the pcic to interrupt on card detect. */
! 195: for (i = 0; i < PCIC_NSLOTS; i++) {
! 196: h = &sc->handle[i];
! 197: if (h->flags & PCIC_FLAG_SOCKETP) {
! 198: pcic_write(h, PCIC_CSC_INTR,
! 199: (sc->irq << PCIC_CSC_INTR_IRQ_SHIFT) |
! 200: PCIC_CSC_INTR_CD_ENABLE);
! 201: powerhook_establish(pcic_power, h);
! 202: }
! 203: }
! 204: } else
! 205: printf("%s: no irq, ", sc->dev.dv_xname);
! 206:
! 207: printf("polling enabled\n");
! 208: if (sc->poll_established == 0) {
! 209: timeout_set(&sc->poll_timeout, pcic_poll_intr, sc);
! 210: timeout_add(&sc->poll_timeout, hz / 2);
! 211: sc->poll_established = 1;
! 212: }
! 213: }
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