iop_pci.c revision 1.13.6.2
1 /* $NetBSD: iop_pci.c,v 1.13.6.2 2004/09/18 14:49:04 skrll 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 1.13.6.2 2004/09/18 14:49:04 skrll 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 u_int product, vendor; 80 pcireg_t reg; 81 82 pa = aux; 83 84 /* 85 * Look for an "intelligent I/O processor" that adheres to the I2O 86 * specification. Ignore the device if it doesn't support interrupt 87 * driven operation. 88 */ 89 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O && 90 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD && 91 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN) 92 return (1); 93 94 /* 95 * Match boards that don't conform exactly to the spec. 96 */ 97 vendor = PCI_VENDOR(pa->pa_id); 98 product = PCI_PRODUCT(pa->pa_id); 99 100 if (vendor == PCI_VENDOR_DPT && 101 (product == PCI_PRODUCT_DPT_RAID_I2O || 102 product == PCI_PRODUCT_DPT_RAID_2005S)) 103 return (1); 104 105 if (vendor == PCI_VENDOR_INTEL && 106 (product == PCI_PRODUCT_INTEL_80960RM_2 || 107 product == PCI_PRODUCT_INTEL_80960_RP)) { 108 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 109 if (PCI_VENDOR(reg) == PCI_VENDOR_PROMISE) 110 return (1); 111 } 112 113 return (0); 114 } 115 116 static void 117 iop_pci_attach(struct device *parent, struct device *self, void *aux) 118 { 119 struct pci_attach_args *pa; 120 struct iop_softc *sc; 121 pci_chipset_tag_t pc; 122 pci_intr_handle_t ih; 123 const char *intrstr; 124 pcireg_t reg; 125 int i; 126 127 sc = (struct iop_softc *)self; 128 pa = (struct pci_attach_args *)aux; 129 pc = pa->pa_pc; 130 printf(": "); 131 132 /* 133 * The kernel always uses the first memory mapping to communicate 134 * with the IOP. 135 */ 136 for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 137 reg = pci_conf_read(pc, pa->pa_tag, i); 138 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM) { 139 sc->sc_memaddr = PCI_MAPREG_MEM_ADDR(reg); 140 break; 141 } 142 } 143 if (i == PCI_MAPREG_END) { 144 printf("can't find mapping\n"); 145 return; 146 } 147 148 /* Map the register window. */ 149 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot, 150 &sc->sc_ioh, NULL, NULL)) { 151 printf("%s: can't map register window\n", sc->sc_dv.dv_xname); 152 return; 153 } 154 155 /* Map the 2nd register window. */ 156 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT && 157 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_2005S) { 158 i += 4; /* next BAR */ 159 if (i == PCI_MAPREG_END) { 160 printf("can't find mapping\n"); 161 return; 162 } 163 164 #if 0 165 /* Should we check it? (see FreeBSD's asr driver) */ 166 reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 167 printf("subid %x, %x\n", PCI_VENDOR(reg), PCI_PRODUCT(reg)); 168 #endif 169 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, 170 &sc->sc_msg_iot, &sc->sc_msg_ioh, NULL, NULL)) { 171 printf("%s: can't map 2nd register window\n", 172 sc->sc_dv.dv_xname); 173 return; 174 } 175 } else { 176 /* iop devices other than 2005S */ 177 sc->sc_msg_iot = sc->sc_iot; 178 sc->sc_msg_ioh = sc->sc_ioh; 179 } 180 181 sc->sc_pcibus = pa->pa_bus; 182 sc->sc_pcidev = pa->pa_device; 183 sc->sc_dmat = pa->pa_dmat; 184 sc->sc_bus_memt = pa->pa_memt; 185 sc->sc_bus_iot = pa->pa_iot; 186 187 /* Enable the device. */ 188 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 189 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 190 reg | PCI_COMMAND_MASTER_ENABLE); 191 192 /* Map and establish the interrupt. XXX IPL_BIO. */ 193 if (pci_intr_map(pa, &ih)) { 194 printf("can't map interrupt\n"); 195 return; 196 } 197 intrstr = pci_intr_string(pc, ih); 198 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc); 199 if (sc->sc_ih == NULL) { 200 printf("can't establish interrupt"); 201 if (intrstr != NULL) 202 printf(" at %s", intrstr); 203 printf("\n"); 204 return; 205 } 206 207 /* Attach to the bus-independent code. */ 208 iop_init(sc, intrstr); 209 } 210
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