1 /* $NetBSD: dpt_pci.c,v 1.8 2001/04/25 17:53:36 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@netbsd.org> 5 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 /* 31 * PCI front-end for DPT EATA SCSI driver. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/queue.h> 38 39 #include <machine/bus.h> 40 #include <machine/intr.h> 41 42 #include <dev/scsipi/scsipi_all.h> 43 #include <dev/scsipi/scsiconf.h> 44 45 #include <dev/pci/pcidevs.h> 46 #include <dev/pci/pcivar.h> 47 48 #include <dev/ic/dptreg.h> 49 #include <dev/ic/dptvar.h> 50 51 #define PCI_CBMA 0x14 /* Configuration base memory address */ 52 #define PCI_CBIO 0x10 /* Configuration base I/O address */ 53 54 static int dpt_pci_match(struct device *, struct cfdata *, void *); 55 static void dpt_pci_attach(struct device *, struct device *, void *); 56 57 struct cfattach dpt_pci_ca = { 58 sizeof(struct dpt_softc), dpt_pci_match, dpt_pci_attach 59 }; 60 61 static int 62 dpt_pci_match(struct device *parent, struct cfdata *match, void *aux) 63 { 64 struct pci_attach_args *pa; 65 66 pa = (struct pci_attach_args *)aux; 67 68 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT && 69 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_SC_RAID) 70 return (1); 71 72 return (0); 73 } 74 75 static void 76 dpt_pci_attach(struct device *parent, struct device *self, void *aux) 77 { 78 struct pci_attach_args *pa; 79 struct dpt_softc *sc; 80 pci_chipset_tag_t pc; 81 pci_intr_handle_t ih; 82 bus_space_handle_t ioh; 83 const char *intrstr; 84 pcireg_t csr; 85 86 sc = (struct dpt_softc *)self; 87 pa = (struct pci_attach_args *)aux; 88 pc = pa->pa_pc; 89 printf(": "); 90 91 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &sc->sc_iot, 92 &ioh, NULL, NULL)) { 93 printf("can't map i/o space\n"); 94 return; 95 } 96 97 /* Need to map in by 16 registers. */ 98 if (bus_space_subregion(sc->sc_iot, ioh, 16, 16, &sc->sc_ioh)) { 99 printf("can't map i/o subregion\n"); 100 return; 101 } 102 103 sc->sc_dmat = pa->pa_dmat; 104 105 /* Enable the device. */ 106 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 107 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 108 csr | PCI_COMMAND_MASTER_ENABLE); 109 110 /* Map and establish the interrupt. */ 111 if (pci_intr_map(pa, &ih)) { 112 printf("can't map interrupt\n"); 113 return; 114 } 115 intrstr = pci_intr_string(pc, ih); 116 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, dpt_intr, sc); 117 if (sc->sc_ih == NULL) { 118 printf("can't establish interrupt"); 119 if (intrstr != NULL) 120 printf(" at %s", intrstr); 121 printf("\n"); 122 return; 123 } 124 125 /* Read the EATA configuration. */ 126 if (dpt_readcfg(sc)) { 127 printf("%s: readcfg failed - see dpt(4)\n", 128 sc->sc_dv.dv_xname); 129 return; 130 } 131 132 /* Now attach to the bus-independent code. */ 133 dpt_init(sc, intrstr); 134 } 135