ata-cbus.c revision 119450
1/*- 2 * Copyright (c) 2002, 2003 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 119450 2003-08-25 09:01:49Z 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/taskqueue.h> 40#include <machine/resource.h> 41#include <machine/bus.h> 42#include <sys/rman.h> 43#include <isa/isavar.h> 44#include <dev/ata/ata-all.h> 45 46/* local vars */ 47struct ata_cbus_controller { 48 struct resource *io; 49 struct resource *altio; 50 struct resource *bankio; 51 struct resource *irq; 52 void *ih; 53 void (*setmode)(struct ata_device *, int); 54 void (*locking)(struct ata_channel *, int); 55 int current_bank; 56 struct { 57 void (*function)(void *); 58 void *argument; 59 } interrupt[2]; 60}; 61 62/* local prototypes */ 63static void ata_cbus_intr(void *); 64static void ata_cbus_banking(struct ata_channel *, int); 65static void ata_cbus_setmode(struct ata_device *, int); 66 67static int 68ata_cbus_probe(device_t dev) 69{ 70 struct resource *io; 71 int rid; 72 u_long tmp; 73 74 /* dont probe PnP devices */ 75 if (isa_get_vendorid(dev)) 76 return (ENXIO); 77 78 /* allocate the ioport range */ 79 rid = ATA_IOADDR_RID; 80 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 81 ATA_PC98_IOSIZE, RF_ACTIVE); 82 if (!io) 83 return ENOMEM; 84 85 /* calculate & set the altport range */ 86 rid = ATA_PC98_ALTADDR_RID; 87 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 88 bus_set_resource(dev, SYS_RES_IOPORT, rid, 89 rman_get_start(io)+ATA_PC98_ALTOFFSET, ATA_ALTIOSIZE); 90 } 91 92 /* calculate & set the bank range */ 93 rid = ATA_PC98_BANKADDR_RID; 94 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) { 95 bus_set_resource(dev, SYS_RES_IOPORT, rid, 96 ATA_PC98_BANK, ATA_PC98_BANKIOSIZE); 97 } 98 99 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io); 100 return 0; 101} 102 103static int 104ata_cbus_attach(device_t dev) 105{ 106 struct ata_cbus_controller *ctlr = device_get_softc(dev); 107 int rid; 108 109 /* allocate resources */ 110 rid = ATA_IOADDR_RID; 111 ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 112 ATA_PC98_IOSIZE, RF_ACTIVE); 113 if (!ctlr->io) 114 return ENOMEM; 115 116 rid = ATA_PC98_ALTADDR_RID; 117 ctlr->altio = 118 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 119 rman_get_start(ctlr->io) + ATA_PC98_ALTOFFSET, ~0, 120 ATA_ALTIOSIZE, RF_ACTIVE); 121 if (!ctlr->altio) { 122 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 123 return ENOMEM; 124 } 125 126 rid = ATA_PC98_BANKADDR_RID; 127 ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 128 ATA_PC98_BANK, ~0, 129 ATA_PC98_BANKIOSIZE, RF_ACTIVE); 130 if (!ctlr->bankio) { 131 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 132 bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio); 133 return ENOMEM; 134 } 135 136 rid = ATA_IRQ_RID; 137 if (!(ctlr->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 138 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE))) { 139 device_printf(dev, "unable to alloc interrupt\n"); 140 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 141 bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio); 142 bus_release_resource(dev, SYS_RES_IOPORT, 143 ATA_PC98_BANKADDR_RID, ctlr->bankio); 144 return ENXIO; 145 } 146 147 if ((bus_setup_intr(dev, ctlr->irq, INTR_TYPE_BIO | INTR_ENTROPY, 148 ata_cbus_intr, ctlr, &ctlr->ih))) { 149 device_printf(dev, "unable to setup interrupt\n"); 150 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io); 151 bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, ctlr->altio); 152 bus_release_resource(dev, SYS_RES_IOPORT, 153 ATA_PC98_BANKADDR_RID, ctlr->bankio); 154 bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq); 155 return ENXIO; 156 } 157 158 ctlr->locking = ata_cbus_banking; 159 ctlr->current_bank = -1; 160 ctlr->setmode = ata_cbus_setmode;; 161 162 if (!device_add_child(dev, "ata", 0)) 163 return ENOMEM; 164 if (!device_add_child(dev, "ata", 1)) 165 return ENOMEM; 166 167 return bus_generic_attach(dev); 168} 169 170static struct resource * 171ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid, 172 u_long start, u_long end, u_long count, u_int flags) 173{ 174 struct ata_cbus_controller *ctlr = device_get_softc(dev); 175 176 if (type == SYS_RES_IOPORT) { 177 switch (*rid) { 178 case ATA_IOADDR_RID: 179 return ctlr->io; 180 case ATA_ALTADDR_RID: 181 return ctlr->altio; 182 } 183 } 184 if (type == SYS_RES_IRQ) 185 return ctlr->irq; 186 return 0; 187} 188 189static int 190ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq, 191 int flags, driver_intr_t *intr, void *arg, 192 void **cookiep) 193{ 194 struct ata_cbus_controller *controller = device_get_softc(dev); 195 int unit = ((struct ata_channel *)device_get_softc(child))->unit; 196 197 controller->interrupt[unit].function = intr; 198 controller->interrupt[unit].argument = arg; 199 *cookiep = controller; 200 201 return 0; 202} 203 204static int 205ata_cbus_print_child(device_t dev, device_t child) 206{ 207 struct ata_channel *ch = device_get_softc(child); 208 int retval = 0; 209 210 retval += bus_print_child_header(dev, child); 211 retval += printf(" at bank %d", ch->unit); 212 retval += bus_print_child_footer(dev, child); 213 return retval; 214} 215 216static void 217ata_cbus_intr(void *data) 218{ 219 struct ata_cbus_controller *ctlr = data; 220 221 if (ctlr->current_bank != -1 && 222 ctlr->interrupt[ctlr->current_bank].argument) 223 ctlr->interrupt[ctlr->current_bank]. 224 function(ctlr->interrupt[ctlr->current_bank].argument); 225} 226 227static void 228ata_cbus_banking(struct ata_channel *ch, int flags) 229{ 230 struct ata_cbus_controller *ctlr = 231 device_get_softc(device_get_parent(ch->dev)); 232 233 switch (flags) { 234 case ATA_LF_LOCK: 235 if (ctlr->current_bank == ch->unit) 236 break; 237 while (!atomic_cmpset_acq_int(&ctlr->current_bank, -1, ch->unit)) 238 tsleep((caddr_t)ch->locking, PRIBIO, "atabnk", 1); 239 ATA_OUTB(ctlr->bankio, 0, ch->unit); 240 break; 241 242 case ATA_LF_UNLOCK: 243 if (ctlr->current_bank == -1 || ctlr->current_bank != ch->unit) 244 break; 245 atomic_store_rel_int(&ctlr->current_bank, -1); 246 break; 247 } 248 return; 249} 250 251static void 252ata_cbus_setmode(struct ata_device *atadev, int mode) 253{ 254 atadev->mode = ata_limit_mode(atadev, mode, ATA_PIO_MAX); 255} 256 257static device_method_t ata_cbus_methods[] = { 258 /* device_interface */ 259 DEVMETHOD(device_probe, ata_cbus_probe), 260 DEVMETHOD(device_attach, ata_cbus_attach), 261 262 /* bus methods */ 263 DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource), 264 DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr), 265 DEVMETHOD(bus_print_child, ata_cbus_print_child), 266 { 0, 0 } 267}; 268 269static driver_t ata_cbus_driver = { 270 "atacbus", 271 ata_cbus_methods, 272 sizeof(struct ata_cbus_controller), 273}; 274 275static devclass_t ata_cbus_devclass; 276 277DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0); 278 279static int 280ata_cbussub_probe(device_t dev) 281{ 282 struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev)); 283 struct ata_channel *ch = device_get_softc(dev); 284 device_t *children; 285 int count, i; 286 287 /* find channel number on this controller */ 288 device_get_children(device_get_parent(dev), &children, &count); 289 for (i = 0; i < count; i++) { 290 if (children[i] == dev) 291 ch->unit = i; 292 } 293 free(children, M_TEMP); 294 295 /* setup the resource vectors */ 296 for (i = ATA_DATA; i <= ATA_STATUS; i ++) { 297 ch->r_io[i].res = ctlr->io; 298 ch->r_io[i].offset = i << 1; 299 } 300 ch->r_io[ATA_ALTSTAT].res = ctlr->altio; 301 ch->r_io[ATA_ALTSTAT].offset = 0; 302 303 /* initialize softc for this channel */ 304 ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM; 305 ch->locking = ctlr->locking; 306 ch->device[MASTER].setmode = ctlr->setmode; 307 ch->device[SLAVE].setmode = ctlr->setmode; 308 return ata_probe(dev); 309} 310 311static device_method_t ata_cbussub_methods[] = { 312 /* device interface */ 313 DEVMETHOD(device_probe, ata_cbussub_probe), 314 DEVMETHOD(device_attach, ata_attach), 315 DEVMETHOD(device_detach, ata_detach), 316 DEVMETHOD(device_resume, ata_resume), 317 { 0, 0 } 318}; 319 320static driver_t ata_cbussub_driver = { 321 "ata", 322 ata_cbussub_methods, 323 sizeof(struct ata_channel), 324}; 325 326DRIVER_MODULE(ata, atacbus, ata_cbussub_driver, ata_devclass, 0, 0); 327