iop_pci.c revision 1.15.4.1
1 /* $NetBSD: iop_pci.c,v 1.15.4.1 2006/12/30 20:48:46 yamt 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 1.15.4.1 2006/12/30 20:48:46 yamt 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, 77 void *aux) 78 { 79 struct pci_attach_args *pa; 80 u_int product, vendor; 81 pcireg_t reg; 82 83 pa = aux; 84 85 /* 86 * Look for an "intelligent I/O processor" that adheres to the I2O 87 * specification. Ignore the device if it doesn't support interrupt 88 * driven operation. 89 */ 90 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O && 91 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD && 92 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN) 93 return (1); 94 95 /* 96 * Match boards that don't conform exactly to the spec. 97 */ 98 vendor = PCI_VENDOR(pa->pa_id); 99 product = PCI_PRODUCT(pa->pa_id); 100 101 if (vendor == PCI_VENDOR_DPT && 102 (product == PCI_PRODUCT_DPT_RAID_I2O || 103 product == PCI_PRODUCT_DPT_RAID_2005S)) 104 return (1); 105 106 if (vendor == PCI_VENDOR_INTEL && 107 (product == PCI_PRODUCT_INTEL_80960RM_2 || 108 product == PCI_PRODUCT_INTEL_80960_RP)) { 109 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 110 if (PCI_VENDOR(reg) == PCI_VENDOR_PROMISE) 111 return (1); 112 } 113 114 return (0); 115 } 116 117 static void 118 iop_pci_attach(struct device *parent, struct device *self, void *aux) 119 { 120 struct pci_attach_args *pa; 121 struct iop_softc *sc; 122 pci_chipset_tag_t pc; 123 pci_intr_handle_t ih; 124 const char *intrstr; 125 pcireg_t reg; 126 int i; 127 128 sc = (struct iop_softc *)self; 129 pa = (struct pci_attach_args *)aux; 130 pc = pa->pa_pc; 131 printf(": "); 132 133 /* 134 * The kernel always uses the first memory mapping to communicate 135 * with the IOP. 136 */ 137 for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 138 reg = pci_conf_read(pc, pa->pa_tag, i); 139 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM) { 140 sc->sc_memaddr = PCI_MAPREG_MEM_ADDR(reg); 141 break; 142 } 143 } 144 if (i == PCI_MAPREG_END) { 145 printf("can't find mapping\n"); 146 return; 147 } 148 149 /* Map the register window. */ 150 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot, 151 &sc->sc_ioh, NULL, NULL)) { 152 printf("%s: can't map register window\n", sc->sc_dv.dv_xname); 153 return; 154 } 155 156 /* Map the 2nd register window. */ 157 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT && 158 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_2005S) { 159 i += 4; /* next BAR */ 160 if (i == PCI_MAPREG_END) { 161 printf("can't find mapping\n"); 162 return; 163 } 164 165 #if 0 166 /* Should we check it? (see FreeBSD's asr driver) */ 167 reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 168 printf("subid %x, %x\n", PCI_VENDOR(reg), PCI_PRODUCT(reg)); 169 #endif 170 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, 171 &sc->sc_msg_iot, &sc->sc_msg_ioh, NULL, NULL)) { 172 printf("%s: can't map 2nd register window\n", 173 sc->sc_dv.dv_xname); 174 return; 175 } 176 } else { 177 /* iop devices other than 2005S */ 178 sc->sc_msg_iot = sc->sc_iot; 179 sc->sc_msg_ioh = sc->sc_ioh; 180 } 181 182 sc->sc_pcibus = pa->pa_bus; 183 sc->sc_pcidev = pa->pa_device; 184 sc->sc_dmat = pa->pa_dmat; 185 sc->sc_bus_memt = pa->pa_memt; 186 sc->sc_bus_iot = pa->pa_iot; 187 188 /* Enable the device. */ 189 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 190 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 191 reg | PCI_COMMAND_MASTER_ENABLE); 192 193 /* Map and establish the interrupt. XXX IPL_BIO. */ 194 if (pci_intr_map(pa, &ih)) { 195 printf("can't map interrupt\n"); 196 return; 197 } 198 intrstr = pci_intr_string(pc, ih); 199 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc); 200 if (sc->sc_ih == NULL) { 201 printf("can't establish interrupt"); 202 if (intrstr != NULL) 203 printf(" at %s", intrstr); 204 printf("\n"); 205 return; 206 } 207 208 /* Attach to the bus-independent code. */ 209 iop_init(sc, intrstr); 210 } 211
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