ata-cbus.c revision 249213
1/*- 2 * Copyright (c) 2002 - 2008 S��ren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/ata/ata-cbus.c 249213 2013-04-06 19:12:49Z marius $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/ata.h> 34#include <sys/bus.h> 35#include <sys/malloc.h> 36#include <sys/module.h> 37#include <sys/conf.h> 38#include <sys/sema.h> 39#include <sys/taskqueue.h> 40#include <vm/uma.h> 41#include <machine/resource.h> 42#include <machine/bus.h> 43#include <sys/rman.h> 44#include <isa/isavar.h> 45#include <dev/ata/ata-all.h> 46#include <ata_if.h> 47 48/* local vars */ 49struct ata_cbus_controller { 50 struct resource *io; 51 struct resource *ctlio; 52 struct resource *bankio; 53 struct resource *irq; 54 void *ih; 55 int channels; 56 struct { 57 void (*function)(void *); 58 void *argument; 59 } interrupt[2]; 60}; 61 62/* local prototypes */ 63static void ata_cbus_intr(void *); 64 65static int 66ata_cbus_probe(device_t dev) 67{ 68 struct resource *io; 69 int rid; 70 u_long tmp; 71 72 /* dont probe PnP devices */ 73 if (isa_get_vendorid(dev)) 74 return (ENXIO); 75 76 /* allocate the ioport range */ 77 rid = ATA_IOADDR_RID; 78 if (!(io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 79 ATA_PC98_IOSIZE, RF_ACTIVE))) 80 return ENOMEM; 81 82 /* calculate & set the altport range */ 83 rid = ATA_PC98_CTLADDR_RID; 84 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 85 bus_set_resource(dev, SYS_RES_IOPORT, rid, 86 rman_get_start(io)+ATA_PC98_CTLOFFSET, ATA_CTLIOSIZE); 87 } 88 89 /* calculate & set the bank range */ 90 rid = ATA_PC98_BANKADDR_RID; 91 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 92 bus_set_resource(dev, SYS_RES_IOPORT, rid, 93 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE); 94 } 95 96 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io); 97 return 0; 98} 99 100static int 101ata_cbus_attach(device_t dev) 102{ 103 struct ata_cbus_controller *ctlr = device_get_softc(dev); 104 device_t child; 105 int rid, unit; 106 107 /* allocate resources */ 108 rid = ATA_IOADDR_RID; 109 if (!(ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 110 ATA_PC98_IOSIZE, RF_ACTIVE))) 111 return ENOMEM; 112 113 rid = ATA_PC98_CTLADDR_RID; 114 if (!(ctlr->ctlio = 115 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 116 rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0, 117 ATA_CTLIOSIZE, RF_ACTIVE))) { 118 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 119 return ENOMEM; 120 } 121 122 rid = ATA_PC98_BANKADDR_RID; 123 if (!(ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 124 ATA_PC98_BANK, ~0, 125 ATA_PC98_BANKIOSIZE, RF_ACTIVE))) { 126 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 127 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio); 128 return ENOMEM; 129 } 130 131 rid = ATA_IRQ_RID; 132 if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 133 RF_ACTIVE | RF_SHAREABLE))) { 134 device_printf(dev, "unable to alloc interrupt\n"); 135 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 136 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio); 137 bus_release_resource(dev, SYS_RES_IOPORT, 138 ATA_PC98_BANKADDR_RID, ctlr->bankio); 139 return ENXIO; 140 } 141 142 if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS, 143 NULL, ata_cbus_intr, ctlr, &ctlr->ih))) { 144 device_printf(dev, "unable to setup interrupt\n"); 145 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 146 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio); 147 bus_release_resource(dev, SYS_RES_IOPORT, 148 ATA_PC98_BANKADDR_RID, ctlr->bankio); 149 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq); 150 return ENXIO; 151 } 152 153 /* Work around the lack of channel serialization in ATA_CAM. */ 154 ctlr->channels = 1; 155 device_printf(dev, "second channel ignored\n"); 156 157 for (unit = 0; unit < ctlr->channels; unit++) { 158 child = device_add_child(dev, "ata", unit); 159 if (child == NULL) 160 device_printf(dev, "failed to add ata child device\n"); 161 else 162 device_set_ivars(child, (void *)(intptr_t)unit); 163 } 164 165 bus_generic_attach(dev); 166 return (0); 167} 168 169static struct resource * 170ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid, 171 u_long start, u_long end, u_long count, u_int flags) 172{ 173 struct ata_cbus_controller *ctlr = device_get_softc(dev); 174 175 if (type == SYS_RES_IOPORT) { 176 switch (*rid) { 177 case ATA_IOADDR_RID: 178 return ctlr->io; 179 case ATA_CTLADDR_RID: 180 return ctlr->ctlio; 181 } 182 } 183 if (type == SYS_RES_IRQ) 184 return ctlr->irq; 185 return 0; 186} 187 188static int 189ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq, 190 int flags, driver_filter_t *filter, driver_intr_t *intr, 191 void *arg, void **cookiep) 192{ 193 struct ata_cbus_controller *controller = device_get_softc(dev); 194 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 195 196 if (filter != NULL) { 197 printf("ata-cbus.c: we cannot use a filter here\n"); 198 return (EINVAL); 199 } 200 controller->interrupt[unit].function = intr; 201 controller->interrupt[unit].argument = arg; 202 *cookiep = controller; 203 204 return 0; 205} 206 207static int 208ata_cbus_print_child(device_t dev, device_t child) 209{ 210 struct ata_channel *ch = device_get_softc(child); 211 int retval = 0; 212 213 retval += bus_print_child_header(dev, child); 214 retval += printf(" at bank %d", ch->unit); 215 retval += bus_print_child_footer(dev, child); 216 return retval; 217} 218 219static void 220ata_cbus_intr(void *data) 221{ 222 struct ata_cbus_controller *ctlr = data; 223 struct ata_channel *ch; 224 int unit; 225 226 for (unit = 0; unit < ctlr->channels; unit++) { 227 if (!(ch = ctlr->interrupt[unit].argument)) 228 continue; 229 ctlr->interrupt[unit].function(ch); 230 } 231} 232 233static device_method_t ata_cbus_methods[] = { 234 /* device interface */ 235 DEVMETHOD(device_probe, ata_cbus_probe), 236 DEVMETHOD(device_attach, ata_cbus_attach), 237// DEVMETHOD(device_detach, ata_cbus_detach), 238 239 /* bus methods */ 240 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource), 241 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr), 242 DEVMETHOD(bus_print_child, ata_cbus_print_child), 243 244 DEVMETHOD_END 245}; 246 247static driver_t ata_cbus_driver = { 248 "atacbus", 249 ata_cbus_methods, 250 sizeof(struct ata_cbus_controller), 251}; 252 253static devclass_t ata_cbus_devclass; 254 255DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, NULL, NULL); 256 257static int 258ata_cbuschannel_probe(device_t dev) 259{ 260 char buffer[32]; 261 262 sprintf(buffer, "ATA channel %d", (int)(intptr_t)device_get_ivars(dev)); 263 device_set_desc_copy(dev, buffer); 264 265 return ata_probe(dev); 266} 267 268static int 269ata_cbuschannel_attach(device_t dev) 270{ 271 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev)); 272 struct ata_channel *ch = device_get_softc(dev); 273 int i; 274 275 if (ch->attached) 276 return (0); 277 ch->attached = 1; 278 279 ch->unit = (intptr_t)device_get_ivars(dev); 280 /* setup the resource vectors */ 281 for (i = ATA_DATA; i <= ATA_COMMAND; i ++) { 282 ch->r_io[i].res = ctlr->io; 283 ch->r_io[i].offset = i << 1; 284 } 285 ch->r_io[ATA_CONTROL].res = ctlr->ctlio; 286 ch->r_io[ATA_CONTROL].offset = 0; 287 ch->r_io[ATA_IDX_ADDR].res = ctlr->io; 288 ata_default_registers(dev); 289 290 /* initialize softc for this channel */ 291 ch->flags |= ATA_USE_16BIT; 292 ata_generic_hw(dev); 293 294 return ata_attach(dev); 295} 296 297static int 298ata_cbuschannel_detach(device_t dev) 299{ 300 struct ata_channel *ch = device_get_softc(dev); 301 302 if (!ch->attached) 303 return (0); 304 ch->attached = 0; 305 306 return ata_detach(dev); 307} 308 309static int 310ata_cbuschannel_suspend(device_t dev) 311{ 312 struct ata_channel *ch = device_get_softc(dev); 313 314 if (!ch->attached) 315 return (0); 316 317 return ata_suspend(dev); 318} 319 320static int 321ata_cbuschannel_resume(device_t dev) 322{ 323 struct ata_channel *ch = device_get_softc(dev); 324 325 if (!ch->attached) 326 return (0); 327 328 return ata_resume(dev); 329} 330 331static device_method_t ata_cbuschannel_methods[] = { 332 /* device interface */ 333 DEVMETHOD(device_probe, ata_cbuschannel_probe), 334 DEVMETHOD(device_attach, ata_cbuschannel_attach), 335 DEVMETHOD(device_detach, ata_cbuschannel_detach), 336 DEVMETHOD(device_suspend, ata_cbuschannel_suspend), 337 DEVMETHOD(device_resume, ata_cbuschannel_resume), 338 DEVMETHOD_END 339}; 340 341static driver_t ata_cbuschannel_driver = { 342 "ata", 343 ata_cbuschannel_methods, 344 sizeof(struct ata_channel), 345}; 346 347DRIVER_MODULE(ata, atacbus, ata_cbuschannel_driver, ata_devclass, NULL, NULL); 348MODULE_DEPEND(ata, ata, 1, 1, 1); 349