Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/aic7xxx/ahc_pci.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
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/ahc_pci.c#19 $ 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD: releng/6.2/sys/dev/aic7xxx/ahc_pci.c 143164 2005-03-05 19:24:22Z imp $"); 36 37 #include <dev/aic7xxx/aic7xxx_osm.h> 38 39 static int ahc_pci_probe(device_t dev); 40 static int ahc_pci_attach(device_t dev); 41 42 static device_method_t ahc_pci_device_methods[] = { 43 /* Device interface */ 44 DEVMETHOD(device_probe, ahc_pci_probe), 45 DEVMETHOD(device_attach, ahc_pci_attach), 46 DEVMETHOD(device_detach, ahc_detach), 47 { 0, 0 } 48 }; 49 50 static driver_t ahc_pci_driver = { 51 "ahc", 52 ahc_pci_device_methods, 53 sizeof(struct ahc_softc) 54 }; 55 56 DRIVER_MODULE(ahc_pci, pci, ahc_pci_driver, ahc_devclass, 0, 0); 57 DRIVER_MODULE(ahc_pci, cardbus, ahc_pci_driver, ahc_devclass, 0, 0); 58 MODULE_DEPEND(ahc_pci, ahc, 1, 1, 1); 59 MODULE_VERSION(ahc_pci, 1); 60 61 static int 62 ahc_pci_probe(device_t dev) 63 { 64 struct ahc_pci_identity *entry; 65 66 entry = ahc_find_pci_device(dev); 67 if (entry != NULL) { 68 device_set_desc(dev, entry->name); 69 return (BUS_PROBE_DEFAULT); 70 } 71 return (ENXIO); 72 } 73 74 static int 75 ahc_pci_attach(device_t dev) 76 { 77 struct ahc_pci_identity *entry; 78 struct ahc_softc *ahc; 79 char *name; 80 int error; 81 82 entry = ahc_find_pci_device(dev); 83 if (entry == NULL) 84 return (ENXIO); 85 86 /* 87 * Allocate a softc for this card and 88 * set it up for attachment by our 89 * common detect routine. 90 */ 91 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 92 if (name == NULL) 93 return (ENOMEM); 94 strcpy(name, device_get_nameunit(dev)); 95 ahc = ahc_alloc(dev, name); 96 if (ahc == NULL) 97 return (ENOMEM); 98 99 ahc_set_unit(ahc, device_get_unit(dev)); 100 101 /* 102 * Should we bother disabling 39Bit addressing 103 * based on installed memory? 104 */ 105 if (sizeof(bus_addr_t) > 4) 106 ahc->flags |= AHC_39BIT_ADDRESSING; 107 108 /* Allocate a dmatag for our SCB DMA maps */ 109 /* XXX Should be a child of the PCI bus dma tag */ 110 error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1, 111 /*boundary*/0, 112 (ahc->flags & AHC_39BIT_ADDRESSING) 113 ? 0x7FFFFFFFFFLL 114 : BUS_SPACE_MAXADDR_32BIT, 115 /*highaddr*/BUS_SPACE_MAXADDR, 116 /*filter*/NULL, /*filterarg*/NULL, 117 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 118 /*nsegments*/AHC_NSEG, 119 /*maxsegsz*/AHC_MAXTRANSFER_SIZE, 120 /*flags*/0, 121 &ahc->parent_dmat); 122 123 if (error != 0) { 124 printf("ahc_pci_attach: Could not allocate DMA tag " 125 "- error %d\n", error); 126 ahc_free(ahc); 127 return (ENOMEM); 128 } 129 ahc->dev_softc = dev; 130 error = ahc_pci_config(ahc, entry); 131 if (error != 0) { 132 ahc_free(ahc); 133 return (error); 134 } 135 136 ahc_attach(ahc); 137 return (0); 138 } 139 140 int 141 ahc_pci_map_registers(struct ahc_softc *ahc) 142 { 143 struct resource *regs; 144 u_int command; 145 int regs_type; 146 int regs_id; 147 int allow_memio; 148 149 command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1); 150 regs = 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(ahc->dev_softc), 156 device_get_unit(ahc->dev_softc), 157 "allow_memio", &allow_memio) != 0) { 158 if (bootverbose) 159 device_printf(ahc->dev_softc, "Defaulting to MEMIO "); 160 #ifdef AHC_ALLOW_MEMIO 161 if (bootverbose) 162 printf("on\n"); 163 allow_memio = 1; 164 #else 165 if (bootverbose) 166 printf("off\n"); 167 allow_memio = 0; 168 #endif 169 } 170 171 if ((allow_memio != 0) && (command & PCIM_CMD_MEMEN) != 0) { 172 173 regs_type = SYS_RES_MEMORY; 174 regs_id = AHC_PCI_MEMADDR; 175 regs = bus_alloc_resource_any(ahc->dev_softc, regs_type, 176 ®s_id, RF_ACTIVE); 177 if (regs != NULL) { 178 ahc->tag = rman_get_bustag(regs); 179 ahc->bsh = rman_get_bushandle(regs); 180 181 /* 182 * Do a quick test to see if memory mapped 183 * I/O is functioning correctly. 184 */ 185 if (ahc_pci_test_register_access(ahc) != 0) { 186 device_printf(ahc->dev_softc, 187 "PCI Device %d:%d:%d failed memory " 188 "mapped test. Using PIO.\n", 189 aic_get_pci_bus(ahc->dev_softc), 190 aic_get_pci_slot(ahc->dev_softc), 191 aic_get_pci_function(ahc->dev_softc)); 192 bus_release_resource(ahc->dev_softc, regs_type, 193 regs_id, regs); 194 regs = NULL; 195 } else { 196 command &= ~PCIM_CMD_PORTEN; 197 aic_pci_write_config(ahc->dev_softc, 198 PCIR_COMMAND, 199 command, /*bytes*/1); 200 } 201 } 202 } 203 204 if (regs == NULL && (command & PCIM_CMD_PORTEN) != 0) { 205 regs_type = SYS_RES_IOPORT; 206 regs_id = AHC_PCI_IOADDR; 207 regs = bus_alloc_resource_any(ahc->dev_softc, regs_type, 208 ®s_id, RF_ACTIVE); 209 if (regs != NULL) { 210 ahc->tag = rman_get_bustag(regs); 211 ahc->bsh = rman_get_bushandle(regs); 212 if (ahc_pci_test_register_access(ahc) != 0) { 213 device_printf(ahc->dev_softc, 214 "PCI Device %d:%d:%d failed I/O " 215 "mapped test.\n", 216 aic_get_pci_bus(ahc->dev_softc), 217 aic_get_pci_slot(ahc->dev_softc), 218 aic_get_pci_function(ahc->dev_softc)); 219 bus_release_resource(ahc->dev_softc, regs_type, 220 regs_id, regs); 221 regs = NULL; 222 } else { 223 command &= ~PCIM_CMD_MEMEN; 224 aic_pci_write_config(ahc->dev_softc, 225 PCIR_COMMAND, 226 command, /*bytes*/1); 227 } 228 } 229 } 230 if (regs == NULL) { 231 device_printf(ahc->dev_softc, 232 "can't allocate register resources\n"); 233 return (ENOMEM); 234 } 235 ahc->platform_data->regs_res_type = regs_type; 236 ahc->platform_data->regs_res_id = regs_id; 237 ahc->platform_data->regs = regs; 238 return (0); 239 }
Cache object: 01ab1664be86e52eff59edf71afa1c44
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]