1 /* $NetBSD: iop_pci.c,v 1.13 2002/11/15 17:51:33 itojun Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * PCI front-end for `iop' driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: iop_pci.c,v 1.13 2002/11/15 17:51:33 itojun Exp $"); 45 46 #include "opt_i2o.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/device.h> 52 #include <sys/queue.h> 53 #include <sys/proc.h> 54 55 #include <machine/endian.h> 56 #include <machine/bus.h> 57 58 #include <dev/pci/pcidevs.h> 59 #include <dev/pci/pcivar.h> 60 61 #include <dev/i2o/i2o.h> 62 #include <dev/i2o/iopreg.h> 63 #include <dev/i2o/iopio.h> 64 #include <dev/i2o/iopvar.h> 65 66 #define PCI_INTERFACE_I2O_POLLED 0x00 67 #define PCI_INTERFACE_I2O_INTRDRIVEN 0x01 68 69 static void iop_pci_attach(struct device *, struct device *, void *); 70 static int iop_pci_match(struct device *, struct cfdata *, void *); 71 72 CFATTACH_DECL(iop_pci, sizeof(struct iop_softc), 73 iop_pci_match, iop_pci_attach, NULL, NULL); 74 75 static int 76 iop_pci_match(struct device *parent, struct cfdata *match, void *aux) 77 { 78 struct pci_attach_args *pa; 79 80 pa = aux; 81 82 /* 83 * Look for an "intelligent I/O processor" that adheres to the I2O 84 * specification. Ignore the device if it doesn't support interrupt 85 * driven operation. 86 */ 87 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O && 88 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD && 89 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN) 90 return (1); 91 92 /* 93 * Match DPT/Adaptec boards that don't conform exactly to the spec. 94 */ 95 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT && 96 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_I2O || 97 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_2005S)) 98 return (1); 99 100 return (0); 101 } 102 103 static void 104 iop_pci_attach(struct device *parent, struct device *self, void *aux) 105 { 106 struct pci_attach_args *pa; 107 struct iop_softc *sc; 108 pci_chipset_tag_t pc; 109 pci_intr_handle_t ih; 110 const char *intrstr; 111 pcireg_t reg; 112 int i; 113 114 sc = (struct iop_softc *)self; 115 pa = (struct pci_attach_args *)aux; 116 pc = pa->pa_pc; 117 printf(": "); 118 119 /* 120 * The kernel always uses the first memory mapping to communicate 121 * with the IOP. 122 */ 123 for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 124 reg = pci_conf_read(pc, pa->pa_tag, i); 125 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM) { 126 sc->sc_memaddr = PCI_MAPREG_MEM_ADDR(reg); 127 break; 128 } 129 } 130 if (i == PCI_MAPREG_END) { 131 printf("can't find mapping\n"); 132 return; 133 } 134 135 /* Map the register window. */ 136 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot, 137 &sc->sc_ioh, NULL, NULL)) { 138 printf("%s: can't map register window\n", sc->sc_dv.dv_xname); 139 return; 140 } 141 142 /* Map the 2nd register window. */ 143 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_2005S) { 144 i += 4; /* next BAR */ 145 if (i == PCI_MAPREG_END) { 146 printf("can't find mapping\n"); 147 return; 148 } 149 150 #if 0 151 /* Should we check it? (see FreeBSD's asr driver) */ 152 reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 153 printf("subid %x, %x\n", PCI_VENDOR(reg), PCI_PRODUCT(reg)); 154 #endif 155 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, 156 &sc->sc_msg_iot, &sc->sc_msg_ioh, NULL, NULL)) { 157 printf("%s: can't map 2nd register window\n", 158 sc->sc_dv.dv_xname); 159 return; 160 } 161 } else { 162 /* iop devices other than 2005S */ 163 sc->sc_msg_iot = sc->sc_iot; 164 sc->sc_msg_ioh = sc->sc_ioh; 165 } 166 167 sc->sc_pcibus = pa->pa_bus; 168 sc->sc_pcidev = pa->pa_device; 169 sc->sc_dmat = pa->pa_dmat; 170 sc->sc_bus_memt = pa->pa_memt; 171 sc->sc_bus_iot = pa->pa_iot; 172 173 /* Enable the device. */ 174 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 175 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 176 reg | PCI_COMMAND_MASTER_ENABLE); 177 178 /* Map and establish the interrupt. XXX IPL_BIO. */ 179 if (pci_intr_map(pa, &ih)) { 180 printf("can't map interrupt\n"); 181 return; 182 } 183 intrstr = pci_intr_string(pc, ih); 184 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc); 185 if (sc->sc_ih == NULL) { 186 printf("can't establish interrupt"); 187 if (intrstr != NULL) 188 printf(" at %s", intrstr); 189 printf("\n"); 190 return; 191 } 192 193 /* Attach to the bus-independent code. */ 194 iop_init(sc, intrstr); 195 } 196