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 <dev/aic7xxx/aic79xx_osm.h> 35 36 static int ahd_pci_probe(device_t dev); 37 static int ahd_pci_attach(device_t dev); 38 39 static device_method_t ahd_pci_device_methods[] = { 40 /* Device interface */ 41 DEVMETHOD(device_probe, ahd_pci_probe), 42 DEVMETHOD(device_attach, ahd_pci_attach), 43 DEVMETHOD(device_detach, ahd_detach), 44 { 0, 0 } 45 }; 46 47 static driver_t ahd_pci_driver = { 48 "ahd", 49 ahd_pci_device_methods, 50 sizeof(struct ahd_softc) 51 }; 52 53 DRIVER_MODULE(ahd, pci, ahd_pci_driver, 0, 0); 54 MODULE_DEPEND(ahd_pci, ahd, 1, 1, 1); 55 MODULE_VERSION(ahd_pci, 1); 56 57 static int 58 ahd_pci_probe(device_t dev) 59 { 60 struct ahd_pci_identity *entry; 61 62 entry = ahd_find_pci_device(dev); 63 if (entry != NULL) { 64 device_set_desc(dev, entry->name); 65 return (BUS_PROBE_DEFAULT); 66 } 67 return (ENXIO); 68 } 69 70 static int 71 ahd_pci_attach(device_t dev) 72 { 73 struct ahd_pci_identity *entry; 74 struct ahd_softc *ahd; 75 char *name; 76 int error; 77 78 entry = ahd_find_pci_device(dev); 79 if (entry == NULL) 80 return (ENXIO); 81 82 /* 83 * Allocate a softc for this card and 84 * set it up for attachment by our 85 * common detect routine. 86 */ 87 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 88 if (name == NULL) 89 return (ENOMEM); 90 strcpy(name, device_get_nameunit(dev)); 91 ahd = ahd_alloc(dev, name); 92 if (ahd == NULL) 93 return (ENOMEM); 94 95 ahd_set_unit(ahd, device_get_unit(dev)); 96 97 /* 98 * Should we bother disabling 39Bit addressing 99 * based on installed memory? 100 */ 101 if (sizeof(bus_addr_t) > 4) 102 ahd->flags |= AHD_39BIT_ADDRESSING; 103 104 /* Allocate a dmatag for our SCB DMA maps */ 105 error = aic_dma_tag_create(ahd, /*parent*/bus_get_dma_tag(dev), 106 /*alignment*/1, /*boundary*/0, 107 (ahd->flags & AHD_39BIT_ADDRESSING) 108 ? 0x7FFFFFFFFF 109 : BUS_SPACE_MAXADDR_32BIT, 110 /*highaddr*/BUS_SPACE_MAXADDR, 111 /*filter*/NULL, /*filterarg*/NULL, 112 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 113 /*nsegments*/AHD_NSEG, 114 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 115 /*flags*/0, 116 &ahd->parent_dmat); 117 118 if (error != 0) { 119 printf("ahd_pci_attach: Could not allocate DMA tag " 120 "- error %d\n", error); 121 ahd_free(ahd); 122 return (ENOMEM); 123 } 124 ahd->dev_softc = dev; 125 error = ahd_pci_config(ahd, entry); 126 if (error != 0) { 127 ahd_free(ahd); 128 return (error); 129 } 130 131 ahd_sysctl(ahd); 132 ahd_attach(ahd); 133 return (0); 134 } 135 136 int 137 ahd_pci_map_registers(struct ahd_softc *ahd) 138 { 139 struct resource *regs; 140 struct resource *regs2; 141 int regs_type; 142 int regs_id; 143 int regs_id2; 144 int allow_memio; 145 146 regs = NULL; 147 regs2 = NULL; 148 regs_type = 0; 149 regs_id = 0; 150 151 /* Retrieve the per-device 'allow_memio' hint */ 152 if (resource_int_value(device_get_name(ahd->dev_softc), 153 device_get_unit(ahd->dev_softc), 154 "allow_memio", &allow_memio) != 0) { 155 if (bootverbose) 156 device_printf(ahd->dev_softc, 157 "Defaulting to MEMIO on\n"); 158 allow_memio = 1; 159 } 160 161 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0 162 && allow_memio != 0) { 163 regs_type = SYS_RES_MEMORY; 164 regs_id = AHD_PCI_MEMADDR; 165 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 166 ®s_id, RF_ACTIVE); 167 if (regs != NULL) { 168 int error; 169 170 ahd->tags[0] = rman_get_bustag(regs); 171 ahd->bshs[0] = rman_get_bushandle(regs); 172 ahd->tags[1] = ahd->tags[0]; 173 error = bus_space_subregion(ahd->tags[0], ahd->bshs[0], 174 /*offset*/0x100, 175 /*size*/0x100, 176 &ahd->bshs[1]); 177 /* 178 * Do a quick test to see if memory mapped 179 * I/O is functioning correctly. 180 */ 181 if (error != 0 182 || ahd_pci_test_register_access(ahd) != 0) { 183 device_printf(ahd->dev_softc, 184 "PCI Device %d:%d:%d failed memory " 185 "mapped test. Using PIO.\n", 186 aic_get_pci_bus(ahd->dev_softc), 187 aic_get_pci_slot(ahd->dev_softc), 188 aic_get_pci_function(ahd->dev_softc)); 189 bus_release_resource(ahd->dev_softc, regs_type, 190 regs_id, regs); 191 regs = NULL; 192 AHD_CORRECTABLE_ERROR(ahd); 193 } 194 } 195 } 196 if (regs == NULL) { 197 regs_type = SYS_RES_IOPORT; 198 regs_id = AHD_PCI_IOADDR0; 199 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 200 ®s_id, RF_ACTIVE); 201 if (regs == NULL) { 202 device_printf(ahd->dev_softc, 203 "can't allocate register resources\n"); 204 AHD_UNCORRECTABLE_ERROR(ahd); 205 return (ENOMEM); 206 } 207 ahd->tags[0] = rman_get_bustag(regs); 208 ahd->bshs[0] = rman_get_bushandle(regs); 209 210 /* And now the second BAR */ 211 regs_id2 = AHD_PCI_IOADDR1; 212 regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type, 213 ®s_id2, RF_ACTIVE); 214 if (regs2 == NULL) { 215 device_printf(ahd->dev_softc, 216 "can't allocate register resources\n"); 217 AHD_UNCORRECTABLE_ERROR(ahd); 218 return (ENOMEM); 219 } 220 ahd->tags[1] = rman_get_bustag(regs2); 221 ahd->bshs[1] = rman_get_bushandle(regs2); 222 ahd->platform_data->regs_res_type[1] = regs_type; 223 ahd->platform_data->regs_res_id[1] = regs_id2; 224 ahd->platform_data->regs[1] = regs2; 225 } 226 ahd->platform_data->regs_res_type[0] = regs_type; 227 ahd->platform_data->regs_res_id[0] = regs_id; 228 ahd->platform_data->regs[0] = regs; 229 return (0); 230 } 231 232 int 233 ahd_pci_map_int(struct ahd_softc *ahd) 234 { 235 int zero; 236 237 zero = 0; 238 ahd->platform_data->irq = 239 bus_alloc_resource_any(ahd->dev_softc, SYS_RES_IRQ, &zero, 240 RF_ACTIVE | RF_SHAREABLE); 241 if (ahd->platform_data->irq == NULL) 242 return (ENOMEM); 243 ahd->platform_data->irq_res_type = SYS_RES_IRQ; 244 return (ahd_map_int(ahd)); 245 } 246