ata-cbus.c revision 144707
1/*- 2 * Copyright (c) 2002 - 2005 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/dev/ata/ata-cbus.c 144707 2005-04-06 10:22:56Z sos $"); 31 32#include "opt_ata.h" 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/ata.h> 37#include <sys/bus.h> 38#include <sys/malloc.h> 39#include <sys/module.h> 40#include <sys/conf.h> 41#include <sys/sema.h> 42#include <sys/taskqueue.h> 43#include <vm/uma.h> 44#include <machine/resource.h> 45#include <machine/bus.h> 46#include <sys/rman.h> 47#include <isa/isavar.h> 48#include <dev/ata/ata-all.h> 49#include <ata_if.h> 50 51/* local vars */ 52struct ata_cbus_controller { 53 struct resource *io; 54 struct resource *ctlio; 55 struct resource *bankio; 56 struct resource *irq; 57 void *ih; 58 struct mtx bank_mtx; 59 int locked_bank; 60 int restart_bank; 61 int hardware_bank; 62 struct { 63 void (*function)(void *); 64 void *argument; 65 } interrupt[2]; 66}; 67 68/* local prototypes */ 69static void ata_cbus_intr(void *); 70static int ata_cbuschannel_banking(device_t dev, int flags); 71 72static int 73ata_cbus_probe(device_t dev) 74{ 75 struct resource *io; 76 int rid; 77 u_long tmp; 78 79 /* dont probe PnP devices */ 80 if (isa_get_vendorid(dev)) 81 return (ENXIO); 82 83 /* allocate the ioport range */ 84 rid = ATA_IOADDR_RID; 85 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 86 ATA_PC98_IOSIZE, RF_ACTIVE); 87 if (!io) 88 return ENOMEM; 89 90 /* calculate & set the altport range */ 91 rid = ATA_PC98_CTLADDR_RID; 92 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 93 bus_set_resource(dev, SYS_RES_IOPORT, rid, 94 rman_get_start(io)+ATA_PC98_CTLOFFSET, ATA_CTLIOSIZE); 95 } 96 97 /* calculate & set the bank range */ 98 rid = ATA_PC98_BANKADDR_RID; 99 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 100 bus_set_resource(dev, SYS_RES_IOPORT, rid, 101 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE); 102 } 103 104 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io); 105 return 0; 106} 107 108static int 109ata_cbus_attach(device_t dev) 110{ 111 struct ata_cbus_controller *ctlr = device_get_softc(dev); 112 int rid; 113 114 /* allocate resources */ 115 rid = ATA_IOADDR_RID; 116 ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 117 ATA_PC98_IOSIZE, RF_ACTIVE); 118 if (!ctlr->io) 119 return ENOMEM; 120 121 rid = ATA_PC98_CTLADDR_RID; 122 ctlr->ctlio = 123 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 124 rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0, 125 ATA_CTLIOSIZE, RF_ACTIVE); 126 if (!ctlr->ctlio) { 127 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 128 return ENOMEM; 129 } 130 131 rid = ATA_PC98_BANKADDR_RID; 132 ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 133 ATA_PC98_BANK, ~0, 134 ATA_PC98_BANKIOSIZE, RF_ACTIVE); 135 if (!ctlr->bankio) { 136 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 137 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio); 138 return ENOMEM; 139 } 140 141 rid = ATA_IRQ_RID; 142 if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 143 RF_ACTIVE | RF_SHAREABLE))) { 144 device_printf(dev, "unable to alloc 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 return ENXIO; 150 } 151 152 if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS, 153 ata_cbus_intr, ctlr, &ctlr->ih))) { 154 device_printf(dev, "unable to setup interrupt\n"); 155 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 156 bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio); 157 bus_release_resource(dev, SYS_RES_IOPORT, 158 ATA_PC98_BANKADDR_RID, ctlr->bankio); 159 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq); 160 return ENXIO; 161 } 162 163 mtx_init(&ctlr->bank_mtx, "ATA cbus bank lock", NULL, MTX_DEF); 164 ctlr->hardware_bank = -1; 165 ctlr->locked_bank = -1; 166 ctlr->restart_bank = -1; 167 168 if (!device_add_child(dev, "ata", 0)) 169 return ENOMEM; 170 if (!device_add_child(dev, "ata", 1)) 171 return ENOMEM; 172 173 return bus_generic_attach(dev); 174} 175 176static struct resource * 177ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid, 178 u_long start, u_long end, u_long count, u_int flags) 179{ 180 struct ata_cbus_controller *ctlr = device_get_softc(dev); 181 182 if (type == SYS_RES_IOPORT) { 183 switch (*rid) { 184 case ATA_IOADDR_RID: 185 return ctlr->io; 186 case ATA_CTLADDR_RID: 187 return ctlr->ctlio; 188 } 189 } 190 if (type == SYS_RES_IRQ) 191 return ctlr->irq; 192 return 0; 193} 194 195static int 196ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq, 197 int flags, driver_intr_t *intr, void *arg, 198 void **cookiep) 199{ 200 struct ata_cbus_controller *controller = device_get_softc(dev); 201 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 202 203 controller->interrupt[unit].function = intr; 204 controller->interrupt[unit].argument = arg; 205 *cookiep = controller; 206 207 return 0; 208} 209 210static int 211ata_cbus_print_child(device_t dev, device_t child) 212{ 213 struct ata_channel *ch = device_get_softc(child); 214 int retval = 0; 215 216 retval += bus_print_child_header(dev, child); 217 retval += printf(" at bank %d", ch->unit); 218 retval += bus_print_child_footer(dev, child); 219 return retval; 220} 221 222static void 223ata_cbus_intr(void *data) 224{ 225 struct ata_cbus_controller *ctlr = data; 226 struct ata_channel *ch; 227 int unit; 228 229 for (unit = 0; unit < 2; unit++) { 230 if (!(ch = ctlr->interrupt[unit].argument)) 231 continue; 232 if (ata_cbuschannel_banking(ch->dev, ATA_LF_WHICH) == unit) 233 ctlr->interrupt[unit].function(ch); 234 } 235} 236 237static device_method_t ata_cbus_methods[] = { 238 /* device interface */ 239 DEVMETHOD(device_probe, ata_cbus_probe), 240 DEVMETHOD(device_attach, ata_cbus_attach), 241// DEVMETHOD(device_detach, ata_cbus_detach), 242 243 /* bus methods */ 244 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource), 245 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr), 246 DEVMETHOD(bus_print_child, ata_cbus_print_child), 247 248 { 0, 0 } 249}; 250 251static driver_t ata_cbus_driver = { 252 "atacbus", 253 ata_cbus_methods, 254 sizeof(struct ata_cbus_controller), 255}; 256 257static devclass_t ata_cbus_devclass; 258 259DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0); 260 261static int 262ata_cbuschannel_probe(device_t dev) 263{ 264 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev)); 265 struct ata_channel *ch = device_get_softc(dev); 266 device_t *children; 267 int count, i; 268 269 /* find channel number on this controller */ 270 device_get_children(device_get_parent(dev), &children, &count); 271 for (i = 0; i < count; i++) { 272 if (children[i] == dev) 273 ch->unit = i; 274 } 275 free(children, M_TEMP); 276 277 /* setup the resource vectors */ 278 for (i = ATA_DATA; i <= ATA_COMMAND; i ++) { 279 ch->r_io[i].res = ctlr->io; 280 ch->r_io[i].offset = i << 1; 281 } 282 ch->r_io[ATA_CONTROL].res = ctlr->ctlio; 283 ch->r_io[ATA_CONTROL].offset = 0; 284 ch->r_io[ATA_IDX_ADDR].res = ctlr->io; 285 ata_default_registers(ch); 286 287 /* initialize softc for this channel */ 288 ch->flags |= ATA_USE_16BIT; 289 ata_generic_hw(ch); 290 return ata_probe(dev); 291} 292 293static int 294ata_cbuschannel_banking(device_t dev, int flags) 295{ 296 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev)); 297 struct ata_channel *ch = device_get_softc(dev); 298 int res; 299 300 mtx_lock(&ctlr->bank_mtx); 301 switch (flags) { 302 case ATA_LF_LOCK: 303 if (ctlr->locked_bank == -1) 304 ctlr->locked_bank = ch->unit; 305 if (ctlr->locked_bank == ch->unit) { 306 ctlr->hardware_bank = ch->unit; 307 ATA_OUTB(ctlr->bankio, 0, ch->unit); 308 } 309 else 310 ctlr->restart_bank = ch->unit; 311 break; 312 313 case ATA_LF_UNLOCK: 314 if (ctlr->locked_bank == ch->unit) { 315 ctlr->locked_bank = -1; 316 if (ctlr->restart_bank != -1) { 317 if ((ch = ctlr->interrupt[ctlr->restart_bank].argument)) { 318 ctlr->restart_bank = -1; 319 mtx_unlock(&ctlr->bank_mtx); 320 ata_start(ch->dev); 321 return -1; 322 } 323 } 324 } 325 break; 326 327 case ATA_LF_WHICH: 328 break; 329 } 330 res = ctlr->locked_bank; 331 mtx_unlock(&ctlr->bank_mtx); 332 return res; 333} 334 335static device_method_t ata_cbuschannel_methods[] = { 336 /* device interface */ 337 DEVMETHOD(device_probe, ata_cbuschannel_probe), 338 DEVMETHOD(device_attach, ata_attach), 339 DEVMETHOD(device_detach, ata_detach), 340 DEVMETHOD(device_suspend, ata_suspend), 341 DEVMETHOD(device_resume, ata_resume), 342 343 /* ATA methods */ 344 DEVMETHOD(ata_locking, ata_cbuschannel_banking), 345 346 { 0, 0 } 347}; 348 349static driver_t ata_cbuschannel_driver = { 350 "ata", 351 ata_cbuschannel_methods, 352 sizeof(struct ata_channel), 353}; 354 355DRIVER_MODULE(ata, atacbus, ata_cbuschannel_driver, ata_devclass, 0, 0); 356MODULE_DEPEND(ata, ata, 1, 1, 1); 357