iop_pci.c revision 1.22
1 /* $NetBSD: iop_pci.c,v 1.22 2008/04/10 19:13:37 cegger 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 1.22 2008/04/10 19:13:37 cegger Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/device.h> 50 #include <sys/queue.h> 51 #include <sys/proc.h> 52 53 #include <machine/endian.h> 54 #include <sys/bus.h> 55 56 #include <dev/pci/pcidevs.h> 57 #include <dev/pci/pcivar.h> 58 59 #include <dev/i2o/i2o.h> 60 #include <dev/i2o/iopreg.h> 61 #include <dev/i2o/iopio.h> 62 #include <dev/i2o/iopvar.h> 63 64 #define PCI_INTERFACE_I2O_POLLED 0x00 65 #define PCI_INTERFACE_I2O_INTRDRIVEN 0x01 66 67 static void iop_pci_attach(struct device *, struct device *, void *); 68 static int iop_pci_match(struct device *, struct cfdata *, void *); 69 70 CFATTACH_DECL(iop_pci, sizeof(struct iop_softc), 71 iop_pci_match, iop_pci_attach, NULL, NULL); 72 73 static int 74 iop_pci_match(struct device *parent, struct cfdata *match, 75 void *aux) 76 { 77 struct pci_attach_args *pa; 78 u_int product, vendor; 79 pcireg_t reg; 80 81 pa = aux; 82 83 /* 84 * Look for an "intelligent I/O processor" that adheres to the I2O 85 * specification. Ignore the device if it doesn't support interrupt 86 * driven operation. 87 */ 88 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O && 89 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_I2O_STANDARD && 90 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_I2O_INTRDRIVEN) 91 return (1); 92 93 /* 94 * Match boards that don't conform exactly to the spec. 95 */ 96 vendor = PCI_VENDOR(pa->pa_id); 97 product = PCI_PRODUCT(pa->pa_id); 98 99 if (vendor == PCI_VENDOR_DPT && 100 (product == PCI_PRODUCT_DPT_RAID_I2O || 101 product == PCI_PRODUCT_DPT_RAID_2005S)) 102 return (1); 103 104 if (vendor == PCI_VENDOR_INTEL && 105 (product == PCI_PRODUCT_INTEL_80960RM_2 || 106 product == PCI_PRODUCT_INTEL_80960_RP)) { 107 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 108 if (PCI_VENDOR(reg) == PCI_VENDOR_PROMISE) 109 return (1); 110 } 111 112 return (0); 113 } 114 115 static void 116 iop_pci_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct pci_attach_args *pa; 119 struct iop_softc *sc; 120 pci_chipset_tag_t pc; 121 pci_intr_handle_t ih; 122 const char *intrstr; 123 pcireg_t reg; 124 int i; 125 126 sc = (struct iop_softc *)self; 127 pa = (struct pci_attach_args *)aux; 128 pc = pa->pa_pc; 129 printf(": "); 130 131 /* 132 * The kernel always uses the first memory mapping to communicate 133 * with the IOP. 134 */ 135 for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) { 136 reg = pci_conf_read(pc, pa->pa_tag, i); 137 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_MEM) { 138 sc->sc_memaddr = PCI_MAPREG_MEM_ADDR(reg); 139 break; 140 } 141 } 142 if (i == PCI_MAPREG_END) { 143 printf("can't find mapping\n"); 144 return; 145 } 146 147 /* Map the register window. */ 148 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, &sc->sc_iot, 149 &sc->sc_ioh, NULL, NULL)) { 150 aprint_error_dev(&sc->sc_dv, "can't map register window\n"); 151 return; 152 } 153 154 /* Map the 2nd register window. */ 155 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DPT && 156 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DPT_RAID_2005S) { 157 i += 4; /* next BAR */ 158 if (i == PCI_MAPREG_END) { 159 printf("can't find mapping\n"); 160 return; 161 } 162 163 #if 0 164 /* Should we check it? (see FreeBSD's asr driver) */ 165 reg = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 166 printf("subid %x, %x\n", PCI_VENDOR(reg), PCI_PRODUCT(reg)); 167 #endif 168 if (pci_mapreg_map(pa, i, PCI_MAPREG_TYPE_MEM, 0, 169 &sc->sc_msg_iot, &sc->sc_msg_ioh, NULL, NULL)) { 170 aprint_error_dev(&sc->sc_dv, "can't map 2nd register window\n"); 171 return; 172 } 173 } else { 174 /* iop devices other than 2005S */ 175 sc->sc_msg_iot = sc->sc_iot; 176 sc->sc_msg_ioh = sc->sc_ioh; 177 } 178 179 sc->sc_pcibus = pa->pa_bus; 180 sc->sc_pcidev = pa->pa_device; 181 sc->sc_dmat = pa->pa_dmat; 182 sc->sc_bus_memt = pa->pa_memt; 183 sc->sc_bus_iot = pa->pa_iot; 184 185 /* Enable the device. */ 186 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 187 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 188 reg | PCI_COMMAND_MASTER_ENABLE); 189 190 /* Map and establish the interrupt.. */ 191 if (pci_intr_map(pa, &ih)) { 192 printf("can't map interrupt\n"); 193 return; 194 } 195 intrstr = pci_intr_string(pc, ih); 196 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, iop_intr, sc); 197 if (sc->sc_ih == NULL) { 198 printf("can't establish interrupt"); 199 if (intrstr != NULL) 200 printf(" at %s", intrstr); 201 printf("\n"); 202 return; 203 } 204 205 /* Attach to the bus-independent code. */ 206 iop_init(sc, intrstr); 207 } 208
Indexes created Sat Sep 20 22:09:52 GMT 2025