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: releng/11.0/sys/dev/aic7xxx/ahd_pci.c 254263 2013-08-12 23:30:01Z scottl $"); 36 37#include <dev/aic7xxx/aic79xx_osm.h> 38 39static int ahd_pci_probe(device_t dev); 40static int ahd_pci_attach(device_t dev); 41 42static 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 50static driver_t ahd_pci_driver = { 51 "ahd", 52 ahd_pci_device_methods, 53 sizeof(struct ahd_softc) 54}; 55 56static devclass_t ahd_devclass; 57 58DRIVER_MODULE(ahd, pci, ahd_pci_driver, ahd_devclass, 0, 0); 59MODULE_DEPEND(ahd_pci, ahd, 1, 1, 1); 60MODULE_VERSION(ahd_pci, 1); 61 62static int 63ahd_pci_probe(device_t dev) 64{ 65 struct ahd_pci_identity *entry; 66 67 entry = ahd_find_pci_device(dev); 68 if (entry != NULL) { 69 device_set_desc(dev, entry->name); 70 return (BUS_PROBE_DEFAULT); 71 } 72 return (ENXIO); 73} 74 75static int 76ahd_pci_attach(device_t dev) 77{ 78 struct ahd_pci_identity *entry; 79 struct ahd_softc *ahd; 80 char *name; 81 int error; 82 83 entry = ahd_find_pci_device(dev); 84 if (entry == NULL) 85 return (ENXIO); 86 87 /* 88 * Allocate a softc for this card and 89 * set it up for attachment by our 90 * common detect routine. 91 */ 92 name = malloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_NOWAIT); 93 if (name == NULL) 94 return (ENOMEM); 95 strcpy(name, device_get_nameunit(dev)); 96 ahd = ahd_alloc(dev, name); 97 if (ahd == NULL) 98 return (ENOMEM); 99 100 ahd_set_unit(ahd, device_get_unit(dev)); 101 102 /* 103 * Should we bother disabling 39Bit addressing 104 * based on installed memory? 105 */ 106 if (sizeof(bus_addr_t) > 4) 107 ahd->flags |= AHD_39BIT_ADDRESSING; 108 109 /* Allocate a dmatag for our SCB DMA maps */ 110 error = aic_dma_tag_create(ahd, /*parent*/bus_get_dma_tag(dev), 111 /*alignment*/1, /*boundary*/0, 112 (ahd->flags & AHD_39BIT_ADDRESSING) 113 ? 0x7FFFFFFFFF 114 : BUS_SPACE_MAXADDR_32BIT, 115 /*highaddr*/BUS_SPACE_MAXADDR, 116 /*filter*/NULL, /*filterarg*/NULL, 117 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 118 /*nsegments*/AHD_NSEG, 119 /*maxsegsz*/AHD_MAXTRANSFER_SIZE, 120 /*flags*/0, 121 &ahd->parent_dmat); 122 123 if (error != 0) { 124 printf("ahd_pci_attach: Could not allocate DMA tag " 125 "- error %d\n", error); 126 ahd_free(ahd); 127 return (ENOMEM); 128 } 129 ahd->dev_softc = dev; 130 error = ahd_pci_config(ahd, entry); 131 if (error != 0) { 132 ahd_free(ahd); 133 return (error); 134 } 135 136 ahd_sysctl(ahd); 137 ahd_attach(ahd); 138 return (0); 139} 140 141int 142ahd_pci_map_registers(struct ahd_softc *ahd) 143{ 144 struct resource *regs; 145 struct resource *regs2; 146 int regs_type; 147 int regs_id; 148 int regs_id2; 149 int allow_memio; 150 151 regs = NULL; 152 regs2 = NULL; 153 regs_type = 0; 154 regs_id = 0; 155 156 /* Retrieve the per-device 'allow_memio' hint */ 157 if (resource_int_value(device_get_name(ahd->dev_softc), 158 device_get_unit(ahd->dev_softc), 159 "allow_memio", &allow_memio) != 0) { 160 if (bootverbose) 161 device_printf(ahd->dev_softc, 162 "Defaulting to MEMIO on\n"); 163 allow_memio = 1; 164 } 165 166 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0 167 && allow_memio != 0) { 168 169 regs_type = SYS_RES_MEMORY; 170 regs_id = AHD_PCI_MEMADDR; 171 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 172 ®s_id, RF_ACTIVE); 173 if (regs != NULL) { 174 int error; 175 176 ahd->tags[0] = rman_get_bustag(regs); 177 ahd->bshs[0] = rman_get_bushandle(regs); 178 ahd->tags[1] = ahd->tags[0]; 179 error = bus_space_subregion(ahd->tags[0], ahd->bshs[0], 180 /*offset*/0x100, 181 /*size*/0x100, 182 &ahd->bshs[1]); 183 /* 184 * Do a quick test to see if memory mapped 185 * I/O is functioning correctly. 186 */ 187 if (error != 0 188 || ahd_pci_test_register_access(ahd) != 0) { 189 device_printf(ahd->dev_softc, 190 "PCI Device %d:%d:%d failed memory " 191 "mapped test. Using PIO.\n", 192 aic_get_pci_bus(ahd->dev_softc), 193 aic_get_pci_slot(ahd->dev_softc), 194 aic_get_pci_function(ahd->dev_softc)); 195 bus_release_resource(ahd->dev_softc, regs_type, 196 regs_id, regs); 197 regs = NULL; 198 AHD_CORRECTABLE_ERROR(ahd); 199 } 200 } 201 } 202 if (regs == NULL) { 203 regs_type = SYS_RES_IOPORT; 204 regs_id = AHD_PCI_IOADDR0; 205 regs = bus_alloc_resource_any(ahd->dev_softc, regs_type, 206 ®s_id, RF_ACTIVE); 207 if (regs == NULL) { 208 device_printf(ahd->dev_softc, 209 "can't allocate register resources\n"); 210 AHD_UNCORRECTABLE_ERROR(ahd); 211 return (ENOMEM); 212 } 213 ahd->tags[0] = rman_get_bustag(regs); 214 ahd->bshs[0] = rman_get_bushandle(regs); 215 216 /* And now the second BAR */ 217 regs_id2 = AHD_PCI_IOADDR1; 218 regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type, 219 ®s_id2, RF_ACTIVE); 220 if (regs2 == NULL) { 221 device_printf(ahd->dev_softc, 222 "can't allocate register resources\n"); 223 AHD_UNCORRECTABLE_ERROR(ahd); 224 return (ENOMEM); 225 } 226 ahd->tags[1] = rman_get_bustag(regs2); 227 ahd->bshs[1] = rman_get_bushandle(regs2); 228 ahd->platform_data->regs_res_type[1] = regs_type; 229 ahd->platform_data->regs_res_id[1] = regs_id2; 230 ahd->platform_data->regs[1] = regs2; 231 } 232 ahd->platform_data->regs_res_type[0] = regs_type; 233 ahd->platform_data->regs_res_id[0] = regs_id; 234 ahd->platform_data->regs[0] = regs; 235 return (0); 236} 237 238int 239ahd_pci_map_int(struct ahd_softc *ahd) 240{ 241 int zero; 242 243 zero = 0; 244 ahd->platform_data->irq = 245 bus_alloc_resource_any(ahd->dev_softc, SYS_RES_IRQ, &zero, 246 RF_ACTIVE | RF_SHAREABLE); 247 if (ahd->platform_data->irq == NULL) 248 return (ENOMEM); 249 ahd->platform_data->irq_res_type = SYS_RES_IRQ; 250 return (ahd_map_int(ahd)); 251} 252