1 /*- 2 * FreeBSD, PCI product support functions 3 * 4 * Copyright (c) 1995-2001 Justin T. Gibbs 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 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * Alternatively, this software may be distributed under the terms of the 17 * GNU Public License ("GPL"). 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahd_pci.c#17 $ 32 */ 33 34 #include <sys/cdefs.h> 35 #include <dev/aic7xxx/aic79xx_osm.h> 36 37 static int ahd_pci_probe(device_t dev); 38 static int ahd_pci_attach(device_t dev); 39 40 static device_method_t ahd_pci_device_methods[] = { 41 /* Device interface */ 42 DEVMETHOD(device_probe, ahd_pci_probe), 43 DEVMETHOD(device_attach, ahd_pci_attach), 44 DEVMETHOD(device_detach, ahd_detach), 45 { 0, 0 } 46 }; 47 48 static driver_t ahd_pci_driver = { 49 "ahd", 50 ahd_pci_device_methods, 51 sizeof(struct ahd_softc) 52 }; 53 54 DRIVER_MODULE(ahd, pci, ahd_pci_driver, 0, 0); 55 MODULE_DEPEND(ahd_pci, ahd, 1, 1, 1); 56 MODULE_VERSION(ahd_pci, 1); 57 58 static int 59 ahd_pci_probe(device_t dev) 60 { 61 struct ahd_pci_identity *entry; 62 63 entry = ahd_find_pci_device(dev); 64 if (entry != NULL) { 65 device_set_desc(dev, entry->name); 66 return (BUS_PROBE_DEFAULT); 67 } 68 return (ENXIO); 69 } 70 71 static int 72 ahd_pci_attach(device_t dev) 73 { 74 struct ahd_pci_identity *entry; 75 struct ahd_softc *ahd; 76 char *name; 77 int error; 78 79 entry = ahd_find_pci_device(dev); 80 if (entry == NULL) 81 return (ENXIO); 82 83 /* 84 * Allocate a softc for this card and 85 * set it up for attachment by our 86 * common detect routine. 87 */ 88 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 89 if (name == NULL) 90 return (ENOMEM); 91 strcpy(name, device_get_nameunit(dev)); 92 ahd = ahd_alloc(dev, name); 93 if (ahd == NULL) 94 return (ENOMEM); 95 96 ahd_set_unit(ahd, device_get_unit(dev)); 97 98 /* 99 * Should we bother disabling 39Bit addressing 100 * based on installed memory? 101 */ 102 if (sizeof(bus_addr_t) > 4) 103 ahd->flags |= AHD_39BIT_ADDRESSING; 104 105 /* Allocate a dmatag for our SCB DMA maps */ 106 error = aic_dma_tag_create(ahd, /*parent*/bus_get_dma_tag(dev), 107 /*alignment*/1, /*boundary*/0, 108 (ahd->flags & AHD_39BIT_ADDRESSING) 109 ? 0x7FFFFFFFFF 110 : BUS_SPACE_MAXADDR_32BIT, 111 /*highaddr*/BUS_SPACE_MAXADDR, 112 /*filter*/NULL, /*filterarg*/NULL, 113 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 114 /*nsegments*/AHD_NSEG, 115 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 116 /*flags*/0, 117 &ahd->parent_dmat); 118 119 if (error != 0) { 120 printf("ahd_pci_attach: Could not allocate DMA tag " 121 "- error %d\n", error); 122 ahd_free(ahd); 123 return (ENOMEM); 124 } 125 ahd->dev_softc = dev; 126 error = ahd_pci_config(ahd, entry); 127 if (error != 0) { 128 ahd_free(ahd); 129 return (error); 130 } 131 132 ahd_sysctl(ahd); 133 ahd_attach(ahd); 134 return (0); 135 } 136 137 int 138 ahd_pci_map_registers(struct ahd_softc *ahd) 139 { 140 struct resource *regs; 141 struct resource *regs2; 142 int regs_type; 143 int regs_id; 144 int regs_id2; 145 int allow_memio; 146 147 regs = NULL; 148 regs2 = NULL; 149 regs_type = 0; 150 regs_id = 0; 151 152 /* Retrieve the per-device 'allow_memio' hint */ 153 if (resource_int_value(device_get_name(ahd->dev_softc), 154 device_get_unit(ahd->dev_softc), 155 "allow_memio", &allow_memio) != 0) { 156 if (bootverbose) 157 device_printf(ahd->dev_softc, 158 "Defaulting to MEMIO on\n"); 159 allow_memio = 1; 160 } 161 162 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0 163 && allow_memio != 0) { 164 regs_type = SYS_RES_MEMORY; 165 regs_id = AHD_PCI_MEMADDR; 166 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 167 ®s_id, RF_ACTIVE); 168 if (regs != NULL) { 169 int error; 170 171 ahd->tags[0] = rman_get_bustag(regs); 172 ahd->bshs[0] = rman_get_bushandle(regs); 173 ahd->tags[1] = ahd->tags[0]; 174 error = bus_space_subregion(ahd->tags[0], ahd->bshs[0], 175 /*offset*/0x100, 176 /*size*/0x100, 177 &ahd->bshs[1]); 178 /* 179 * Do a quick test to see if memory mapped 180 * I/O is functioning correctly. 181 */ 182 if (error != 0 183 || ahd_pci_test_register_access(ahd) != 0) { 184 device_printf(ahd->dev_softc, 185 "PCI Device %d:%d:%d failed memory " 186 "mapped test. Using PIO.\n", 187 aic_get_pci_bus(ahd->dev_softc), 188 aic_get_pci_slot(ahd->dev_softc), 189 aic_get_pci_function(ahd->dev_softc)); 190 bus_release_resource(ahd->dev_softc, regs_type, 191 regs_id, regs); 192 regs = NULL; 193 AHD_CORRECTABLE_ERROR(ahd); 194 } 195 } 196 } 197 if (regs == NULL) { 198 regs_type = SYS_RES_IOPORT; 199 regs_id = AHD_PCI_IOADDR0; 200 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 201 ®s_id, RF_ACTIVE); 202 if (regs == NULL) { 203 device_printf(ahd->dev_softc, 204 "can't allocate register resources\n"); 205 AHD_UNCORRECTABLE_ERROR(ahd); 206 return (ENOMEM); 207 } 208 ahd->tags[0] = rman_get_bustag(regs); 209 ahd->bshs[0] = rman_get_bushandle(regs); 210 211 /* And now the second BAR */ 212 regs_id2 = AHD_PCI_IOADDR1; 213 regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type, 214 ®s_id2, RF_ACTIVE); 215 if (regs2 == NULL) { 216 device_printf(ahd->dev_softc, 217 "can't allocate register resources\n"); 218 AHD_UNCORRECTABLE_ERROR(ahd); 219 return (ENOMEM); 220 } 221 ahd->tags[1] = rman_get_bustag(regs2); 222 ahd->bshs[1] = rman_get_bushandle(regs2); 223 ahd->platform_data->regs_res_type[1] = regs_type; 224 ahd->platform_data->regs_res_id[1] = regs_id2; 225 ahd->platform_data->regs[1] = regs2; 226 } 227 ahd->platform_data->regs_res_type[0] = regs_type; 228 ahd->platform_data->regs_res_id[0] = regs_id; 229 ahd->platform_data->regs[0] = regs; 230 return (0); 231 } 232 233 int 234 ahd_pci_map_int(struct ahd_softc *ahd) 235 { 236 int zero; 237 238 zero = 0; 239 ahd->platform_data->irq = 240 bus_alloc_resource_any(ahd->dev_softc, SYS_RES_IRQ, &zero, 241 RF_ACTIVE | RF_SHAREABLE); 242 if (ahd->platform_data->irq == NULL) 243 return (ENOMEM); 244 ahd->platform_data->irq_res_type = SYS_RES_IRQ; 245 return (ahd_map_int(ahd)); 246 } 247