| 1 | /* |
| 2 | * FreeBSD, VLB/ISA product support functions |
| 3 | * |
| 4 | * Copyright (c) 2004 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. |
| 13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 14 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 15 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 16 | * including a substantially similar Disclaimer requirement for further |
| 17 | * binary redistribution. |
| 18 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 19 | * of any contributors may be used to endorse or promote products derived |
| 20 | * from this software without specific prior written permission. |
| 21 | * |
| 22 | * NO WARRANTY |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 24 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 25 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 26 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 27 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 31 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 32 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 33 | * POSSIBILITY OF SUCH DAMAGES. |
| 34 | * |
| 35 | * $Id$ |
| 36 | * |
| 37 | * $FreeBSD: src/sys/dev/aic7xxx/ahc_isa.c,v 1.5 2004/10/15 23:39:52 gibbs Exp $ |
| 38 | * $DragonFly: src/sys/dev/disk/aic7xxx/ahc_isa.c,v 1.3 2008/02/09 18:13:13 pavalos Exp $ |
| 39 | */ |
| 40 | |
| 41 | #include "aic7xxx_osm.h" |
| 42 | |
| 43 | #include <machine/limits.h> /* For CHAR_BIT */ |
| 44 | #include <bus/isa/isavar.h> /* For ISA attach glue */ |
| 45 | |
| 46 | |
| 47 | static struct aic7770_identity *ahc_isa_find_device(bus_space_tag_t tag, |
| 48 | bus_space_handle_t bsh); |
| 49 | static void ahc_isa_identify(driver_t *driver, |
| 50 | device_t parent); |
| 51 | static int ahc_isa_probe(device_t dev); |
| 52 | static int ahc_isa_attach(device_t dev); |
| 53 | |
| 54 | /* |
| 55 | * Perform an EISA probe of the address with the addition |
| 56 | * of a "priming" step. The 284X requires priming (a write |
| 57 | * to offset 0x80, the first EISA ID register) to ensure it |
| 58 | * is not mistaken as an EISA card. Once we have the ID, |
| 59 | * lookup the controller in the aic7770 table of supported |
| 60 | * devices. |
| 61 | */ |
| 62 | static struct aic7770_identity * |
| 63 | ahc_isa_find_device(bus_space_tag_t tag, bus_space_handle_t bsh) { |
| 64 | uint32_t id; |
| 65 | u_int id_size; |
| 66 | int i; |
| 67 | |
| 68 | id = 0; |
| 69 | id_size = sizeof(id); |
| 70 | for (i = 0; i < id_size; i++) { |
| 71 | bus_space_write_1(tag, bsh, 0x80, 0x80 + i); |
| 72 | id |= bus_space_read_1(tag, bsh, 0x80 + i) |
| 73 | << ((id_size - i - 1) * CHAR_BIT); |
| 74 | } |
| 75 | |
| 76 | return (aic7770_find_device(id)); |
| 77 | } |
| 78 | |
| 79 | static void |
| 80 | ahc_isa_identify(driver_t *driver, device_t parent) |
| 81 | { |
| 82 | int slot; |
| 83 | int max_slot; |
| 84 | |
| 85 | max_slot = 14; |
| 86 | for (slot = 0; slot <= max_slot; slot++) { |
| 87 | struct aic7770_identity *entry; |
| 88 | bus_space_tag_t tag; |
| 89 | bus_space_handle_t bsh; |
| 90 | struct resource *regs; |
| 91 | uint32_t iobase; |
| 92 | int rid; |
| 93 | |
| 94 | rid = 0; |
| 95 | iobase = (slot * AHC_EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET; |
| 96 | regs = bus_alloc_resource(parent, SYS_RES_IOPORT, &rid, |
| 97 | iobase, iobase, AHC_EISA_IOSIZE, |
| 98 | RF_ACTIVE); |
| 99 | if (regs == NULL) { |
| 100 | if (bootverbose) |
| 101 | kprintf("ahc_isa_probe %d: ioport 0x%x " |
| 102 | "alloc failed\n", slot, iobase); |
| 103 | continue; |
| 104 | } |
| 105 | |
| 106 | tag = rman_get_bustag(regs); |
| 107 | bsh = rman_get_bushandle(regs); |
| 108 | |
| 109 | entry = ahc_isa_find_device(tag, bsh); |
| 110 | if (entry != NULL) { |
| 111 | device_t child; |
| 112 | |
| 113 | child = BUS_ADD_CHILD(parent, parent, ISA_ORDER_SPECULATIVE, |
| 114 | "ahc", -1); |
| 115 | if (child != NULL) { |
| 116 | device_set_driver(child, driver); |
| 117 | bus_set_resource(child, SYS_RES_IOPORT, |
| 118 | 0, iobase, AHC_EISA_IOSIZE); |
| 119 | } |
| 120 | } |
| 121 | bus_release_resource(parent, SYS_RES_IOPORT, rid, regs); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | static int |
| 126 | ahc_isa_probe(device_t dev) |
| 127 | { |
| 128 | struct aic7770_identity *entry; |
| 129 | bus_space_tag_t tag; |
| 130 | bus_space_handle_t bsh; |
| 131 | struct resource *regs; |
| 132 | struct resource *irq; |
| 133 | uint32_t iobase; |
| 134 | u_int intdef; |
| 135 | u_int hcntrl; |
| 136 | int irq_num; |
| 137 | int error; |
| 138 | int zero; |
| 139 | |
| 140 | error = ENXIO; |
| 141 | zero = 0; |
| 142 | regs = NULL; |
| 143 | irq = NULL; |
| 144 | |
| 145 | /* Skip probes for ISA PnP devices */ |
| 146 | if (isa_get_logicalid(dev) != 0) |
| 147 | return (error); |
| 148 | |
| 149 | regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); |
| 150 | if (regs == NULL) { |
| 151 | device_printf(dev, "No resources allocated.\n"); |
| 152 | return (ENOMEM); |
| 153 | } |
| 154 | |
| 155 | iobase = rman_get_start(regs); |
| 156 | tag = rman_get_bustag(regs); |
| 157 | bsh = rman_get_bushandle(regs); |
| 158 | |
| 159 | entry = ahc_isa_find_device(tag, bsh); |
| 160 | if (entry == NULL) |
| 161 | goto cleanup; |
| 162 | |
| 163 | /* Pause the card preseving the IRQ type */ |
| 164 | hcntrl = bus_space_read_1(tag, bsh, HCNTRL) & IRQMS; |
| 165 | bus_space_write_1(tag, bsh, HCNTRL, hcntrl | PAUSE); |
| 166 | while ((bus_space_read_1(tag, bsh, HCNTRL) & PAUSE) == 0) |
| 167 | ; |
| 168 | |
| 169 | /* Make sure we have a valid interrupt vector */ |
| 170 | intdef = bus_space_read_1(tag, bsh, INTDEF); |
| 171 | irq_num = intdef & VECTOR; |
| 172 | switch (irq_num) { |
| 173 | case 9: |
| 174 | case 10: |
| 175 | case 11: |
| 176 | case 12: |
| 177 | case 14: |
| 178 | case 15: |
| 179 | break; |
| 180 | default: |
| 181 | device_printf(dev, "@0x%x: illegal irq setting %d\n", |
| 182 | iobase, irq_num); |
| 183 | goto cleanup; |
| 184 | } |
| 185 | |
| 186 | if (bus_set_resource(dev, SYS_RES_IRQ, zero, irq_num, 1) != 0) |
| 187 | goto cleanup; |
| 188 | |
| 189 | /* |
| 190 | * The 284X only supports edge triggered interrupts, |
| 191 | * so do not claim RF_SHAREABLE. |
| 192 | */ |
| 193 | irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &zero, |
| 194 | 0 /*!(RF_ACTIVE|RF_SHAREABLE)*/); |
| 195 | if (irq != NULL) { |
| 196 | error = 0; |
| 197 | device_set_desc(dev, entry->name); |
| 198 | } else |
| 199 | device_printf(dev, "@0x%x: irq %d allocation failed\n", |
| 200 | iobase, irq_num); |
| 201 | |
| 202 | cleanup: |
| 203 | if (regs != NULL) { |
| 204 | bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); |
| 205 | regs = NULL; |
| 206 | } |
| 207 | |
| 208 | if (irq != NULL) { |
| 209 | bus_release_resource(dev, SYS_RES_IRQ, zero, irq); |
| 210 | irq = NULL; |
| 211 | } |
| 212 | |
| 213 | return (error); |
| 214 | } |
| 215 | |
| 216 | static int |
| 217 | ahc_isa_attach(device_t dev) |
| 218 | { |
| 219 | struct aic7770_identity *entry; |
| 220 | bus_space_tag_t tag; |
| 221 | bus_space_handle_t bsh; |
| 222 | struct resource *regs; |
| 223 | struct ahc_softc *ahc; |
| 224 | char *name; |
| 225 | int zero; |
| 226 | int error; |
| 227 | |
| 228 | zero = 0; |
| 229 | regs = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &zero, RF_ACTIVE); |
| 230 | if (regs == NULL) |
| 231 | return (ENOMEM); |
| 232 | |
| 233 | tag = rman_get_bustag(regs); |
| 234 | bsh = rman_get_bushandle(regs); |
| 235 | entry = ahc_isa_find_device(tag, bsh); |
| 236 | bus_release_resource(dev, SYS_RES_IOPORT, zero, regs); |
| 237 | if (entry == NULL) |
| 238 | return (ENODEV); |
| 239 | |
| 240 | /* |
| 241 | * Allocate a softc for this card and |
| 242 | * set it up for attachment by our |
| 243 | * common detect routine. |
| 244 | */ |
| 245 | name = kmalloc(strlen(device_get_nameunit(dev)) + 1, M_DEVBUF, M_WAITOK); |
| 246 | strcpy(name, device_get_nameunit(dev)); |
| 247 | ahc = ahc_alloc(dev, name); |
| 248 | if (ahc == NULL) |
| 249 | return (ENOMEM); |
| 250 | |
| 251 | ahc_set_unit(ahc, device_get_unit(dev)); |
| 252 | |
| 253 | /* Allocate a dmatag for our SCB DMA maps */ |
| 254 | /* XXX Should be a child of the VLB/ISA bus dma tag */ |
| 255 | error = aic_dma_tag_create(ahc, /*parent*/NULL, /*alignment*/1, |
| 256 | /*boundary*/0, |
| 257 | /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, |
| 258 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 259 | /*filter*/NULL, /*filterarg*/NULL, |
| 260 | /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, |
| 261 | /*nsegments*/AHC_NSEG, |
| 262 | /*maxsegsz*/AHC_MAXTRANSFER_SIZE, |
| 263 | /*flags*/0, |
| 264 | &ahc->parent_dmat); |
| 265 | |
| 266 | if (error != 0) { |
| 267 | kprintf("ahc_isa_attach: Could not allocate DMA tag " |
| 268 | "- error %d\n", error); |
| 269 | ahc_free(ahc); |
| 270 | return (ENOMEM); |
| 271 | } |
| 272 | ahc->dev_softc = dev; |
| 273 | error = aic7770_config(ahc, entry, /*unused ioport arg*/0); |
| 274 | if (error != 0) { |
| 275 | ahc_free(ahc); |
| 276 | return (error); |
| 277 | } |
| 278 | |
| 279 | ahc_attach(ahc); |
| 280 | return (0); |
| 281 | } |
| 282 | |
| 283 | static device_method_t ahc_isa_device_methods[] = { |
| 284 | /* Device interface */ |
| 285 | DEVMETHOD(device_identify, ahc_isa_identify), |
| 286 | DEVMETHOD(device_probe, ahc_isa_probe), |
| 287 | DEVMETHOD(device_attach, ahc_isa_attach), |
| 288 | DEVMETHOD(device_detach, ahc_detach), |
| 289 | { 0, 0 } |
| 290 | }; |
| 291 | |
| 292 | static driver_t ahc_isa_driver = { |
| 293 | "ahc", |
| 294 | ahc_isa_device_methods, |
| 295 | sizeof(struct ahc_softc) |
| 296 | }; |
| 297 | |
| 298 | DRIVER_MODULE(ahc_isa, isa, ahc_isa_driver, ahc_devclass, 0, 0); |
| 299 | MODULE_DEPEND(ahc_isa, ahc, 1, 1, 1); |
| 300 | MODULE_VERSION(ahc_isa, 1); |