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 __FBSDID("$FreeBSD$"); 36 37 #include <dev/aic7xxx/aic79xx_osm.h> 38 39 static int ahd_pci_probe(device_t dev); 40 static int ahd_pci_attach(device_t dev); 41 42 static device_method_t ahd_pci_device_methods[] = { 43 /* Device interface */ 44 DEVMETHOD(device_probe, ahd_pci_probe), 45 DEVMETHOD(device_attach, ahd_pci_attach), 46 DEVMETHOD(device_detach, ahd_detach), 47 { 0, 0 } 48 }; 49 50 static driver_t ahd_pci_driver = { 51 "ahd", 52 ahd_pci_device_methods, 53 sizeof(struct ahd_softc) 54 }; 55 56 DRIVER_MODULE(ahd, pci, ahd_pci_driver, 0, 0); 57 MODULE_DEPEND(ahd_pci, ahd, 1, 1, 1); 58 MODULE_VERSION(ahd_pci, 1); 59 60 static int 61 ahd_pci_probe(device_t dev) 62 { 63 struct ahd_pci_identity *entry; 64 65 entry = ahd_find_pci_device(dev); 66 if (entry != NULL) { 67 device_set_desc(dev, entry->name); 68 return (BUS_PROBE_DEFAULT); 69 } 70 return (ENXIO); 71 } 72 73 static int 74 ahd_pci_attach(device_t dev) 75 { 76 struct ahd_pci_identity *entry; 77 struct ahd_softc *ahd; 78 char *name; 79 int error; 80 81 entry = ahd_find_pci_device(dev); 82 if (entry == NULL) 83 return (ENXIO); 84 85 /* 86 * Allocate a softc for this card and 87 * set it up for attachment by our 88 * common detect routine. 89 */ 90 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 91 if (name == NULL) 92 return (ENOMEM); 93 strcpy(name, device_get_nameunit(dev)); 94 ahd = ahd_alloc(dev, name); 95 if (ahd == NULL) 96 return (ENOMEM); 97 98 ahd_set_unit(ahd, device_get_unit(dev)); 99 100 /* 101 * Should we bother disabling 39Bit addressing 102 * based on installed memory? 103 */ 104 if (sizeof(bus_addr_t) > 4) 105 ahd->flags |= AHD_39BIT_ADDRESSING; 106 107 /* Allocate a dmatag for our SCB DMA maps */ 108 error = aic_dma_tag_create(ahd, /*parent*/bus_get_dma_tag(dev), 109 /*alignment*/1, /*boundary*/0, 110 (ahd->flags & AHD_39BIT_ADDRESSING) 111 ? 0x7FFFFFFFFF 112 : BUS_SPACE_MAXADDR_32BIT, 113 /*highaddr*/BUS_SPACE_MAXADDR, 114 /*filter*/NULL, /*filterarg*/NULL, 115 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 116 /*nsegments*/AHD_NSEG, 117 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 118 /*flags*/0, 119 &ahd->parent_dmat); 120 121 if (error != 0) { 122 printf("ahd_pci_attach: Could not allocate DMA tag " 123 "- error %d\n", error); 124 ahd_free(ahd); 125 return (ENOMEM); 126 } 127 ahd->dev_softc = dev; 128 error = ahd_pci_config(ahd, entry); 129 if (error != 0) { 130 ahd_free(ahd); 131 return (error); 132 } 133 134 ahd_sysctl(ahd); 135 ahd_attach(ahd); 136 return (0); 137 } 138 139 int 140 ahd_pci_map_registers(struct ahd_softc *ahd) 141 { 142 struct resource *regs; 143 struct resource *regs2; 144 int regs_type; 145 int regs_id; 146 int regs_id2; 147 int allow_memio; 148 149 regs = NULL; 150 regs2 = NULL; 151 regs_type = 0; 152 regs_id = 0; 153 154 /* Retrieve the per-device 'allow_memio' hint */ 155 if (resource_int_value(device_get_name(ahd->dev_softc), 156 device_get_unit(ahd->dev_softc), 157 "allow_memio", &allow_memio) != 0) { 158 if (bootverbose) 159 device_printf(ahd->dev_softc, 160 "Defaulting to MEMIO on\n"); 161 allow_memio = 1; 162 } 163 164 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0 165 && allow_memio != 0) { 166 regs_type = SYS_RES_MEMORY; 167 regs_id = AHD_PCI_MEMADDR; 168 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 169 ®s_id, RF_ACTIVE); 170 if (regs != NULL) { 171 int error; 172 173 ahd->tags[0] = rman_get_bustag(regs); 174 ahd->bshs[0] = rman_get_bushandle(regs); 175 ahd->tags[1] = ahd->tags[0]; 176 error = bus_space_subregion(ahd->tags[0], ahd->bshs[0], 177 /*offset*/0x100, 178 /*size*/0x100, 179 &ahd->bshs[1]); 180 /* 181 * Do a quick test to see if memory mapped 182 * I/O is functioning correctly. 183 */ 184 if (error != 0 185 || ahd_pci_test_register_access(ahd) != 0) { 186 device_printf(ahd->dev_softc, 187 "PCI Device %d:%d:%d failed memory " 188 "mapped test. Using PIO.\n", 189 aic_get_pci_bus(ahd->dev_softc), 190 aic_get_pci_slot(ahd->dev_softc), 191 aic_get_pci_function(ahd->dev_softc)); 192 bus_release_resource(ahd->dev_softc, regs_type, 193 regs_id, regs); 194 regs = NULL; 195 AHD_CORRECTABLE_ERROR(ahd); 196 } 197 } 198 } 199 if (regs == NULL) { 200 regs_type = SYS_RES_IOPORT; 201 regs_id = AHD_PCI_IOADDR0; 202 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 203 ®s_id, RF_ACTIVE); 204 if (regs == NULL) { 205 device_printf(ahd->dev_softc, 206 "can't allocate register resources\n"); 207 AHD_UNCORRECTABLE_ERROR(ahd); 208 return (ENOMEM); 209 } 210 ahd->tags[0] = rman_get_bustag(regs); 211 ahd->bshs[0] = rman_get_bushandle(regs); 212 213 /* And now the second BAR */ 214 regs_id2 = AHD_PCI_IOADDR1; 215 regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type, 216 ®s_id2, RF_ACTIVE); 217 if (regs2 == NULL) { 218 device_printf(ahd->dev_softc, 219 "can't allocate register resources\n"); 220 AHD_UNCORRECTABLE_ERROR(ahd); 221 return (ENOMEM); 222 } 223 ahd->tags[1] = rman_get_bustag(regs2); 224 ahd->bshs[1] = rman_get_bushandle(regs2); 225 ahd->platform_data->regs_res_type[1] = regs_type; 226 ahd->platform_data->regs_res_id[1] = regs_id2; 227 ahd->platform_data->regs[1] = regs2; 228 } 229 ahd->platform_data->regs_res_type[0] = regs_type; 230 ahd->platform_data->regs_res_id[0] = regs_id; 231 ahd->platform_data->regs[0] = regs; 232 return (0); 233 } 234 235 int 236 ahd_pci_map_int(struct ahd_softc *ahd) 237 { 238 int zero; 239 240 zero = 0; 241 ahd->platform_data->irq = 242 bus_alloc_resource_any(ahd->dev_softc, SYS_RES_IRQ, &zero, 243 RF_ACTIVE | RF_SHAREABLE); 244 if (ahd->platform_data->irq == NULL) 245 return (ENOMEM); 246 ahd->platform_data->irq_res_type = SYS_RES_IRQ; 247 return (ahd_map_int(ahd)); 248 } 249