bt_isa.c revision 139749
1254721Semaste/*- 2254721Semaste * Product specific probe and attach routines for: 3254721Semaste * Buslogic BT-54X and BT-445 cards 4254721Semaste * 5254721Semaste * Copyright (c) 1998, 1999 Justin T. Gibbs 6254721Semaste * All rights reserved. 7254721Semaste * 8254721Semaste * Redistribution and use in source and binary forms, with or without 9254721Semaste * modification, are permitted provided that the following conditions 10254721Semaste * are met: 11254721Semaste * 1. Redistributions of source code must retain the above copyright 12254721Semaste * notice, this list of conditions, and the following disclaimer, 13254721Semaste * without modification, immediately at the beginning of the file. 14254721Semaste * 2. The name of the author may not be used to endorse or promote products 15254721Semaste * derived from this software without specific prior written permission. 16254721Semaste * 17254721Semaste * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18254721Semaste * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19254721Semaste * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20254721Semaste * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21254721Semaste * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22254721Semaste * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23254721Semaste * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24254721Semaste * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25254721Semaste * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26254721Semaste * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27254721Semaste * SUCH DAMAGE. 28254721Semaste * 29254721Semaste */ 30254721Semaste 31254721Semaste#include <sys/cdefs.h> 32254721Semaste__FBSDID("$FreeBSD: head/sys/dev/buslogic/bt_isa.c 139749 2005-01-06 01:43:34Z imp $"); 33254721Semaste 34254721Semaste#include <sys/param.h> 35254721Semaste#include <sys/systm.h> 36254721Semaste#include <sys/kernel.h> 37254721Semaste#include <sys/module.h> 38254721Semaste#include <sys/lock.h> 39254721Semaste#include <sys/mutex.h> 40254721Semaste#include <sys/bus.h> 41254721Semaste 42254721Semaste#include <machine/bus_pio.h> 43254721Semaste#include <machine/bus.h> 44254721Semaste#include <machine/resource.h> 45254721Semaste#include <sys/rman.h> 46254721Semaste 47254721Semaste#include <isa/isavar.h> 48254721Semaste#include <dev/buslogic/btreg.h> 49254721Semaste 50254721Semaste#include <cam/scsi/scsi_all.h> 51254721Semaste 52254721Semastestatic bus_dma_filter_t btvlbouncefilter; 53254721Semastestatic bus_dmamap_callback_t btmapsensebuffers; 54254721Semaste 55254721Semastestatic int 56254721Semastebt_isa_alloc_resources(device_t dev, u_long portstart, u_long portend) 57254721Semaste{ 58254721Semaste int rid; 59254721Semaste struct resource *port; 60254721Semaste struct resource *irq; 61254721Semaste struct resource *drq; 62254721Semaste 63254721Semaste rid = 0; 64254721Semaste port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 65254721Semaste portstart, portend, BT_NREGS, RF_ACTIVE); 66254721Semaste if (!port) 67254721Semaste return (ENOMEM); 68254721Semaste 69254721Semaste if (isa_get_irq(dev) != -1) { 70254721Semaste rid = 0; 71254721Semaste irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 72254721Semaste if (!irq) { 73254721Semaste if (port) 74254721Semaste bus_release_resource(dev, SYS_RES_IOPORT, 75254721Semaste 0, port); 76254721Semaste return (ENOMEM); 77254721Semaste } 78254721Semaste } else 79254721Semaste irq = 0; 80254721Semaste 81254721Semaste if (isa_get_drq(dev) != -1) { 82254721Semaste rid = 0; 83254721Semaste drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid, RF_ACTIVE); 84254721Semaste if (!drq) { 85254721Semaste if (port) 86254721Semaste bus_release_resource(dev, SYS_RES_IOPORT, 87254721Semaste 0, port); 88254721Semaste if (irq) 89254721Semaste bus_release_resource(dev, SYS_RES_IRQ, 90254721Semaste 0, irq); 91254721Semaste return (ENOMEM); 92254721Semaste } 93254721Semaste } else 94254721Semaste drq = 0; 95254721Semaste 96254721Semaste bt_init_softc(dev, port, irq, drq); 97254721Semaste 98254721Semaste return (0); 99254721Semaste} 100254721Semaste 101254721Semastestatic void 102254721Semastebt_isa_release_resources(device_t dev) 103254721Semaste{ 104254721Semaste struct bt_softc *bt = device_get_softc(dev); 105254721Semaste 106254721Semaste if (bt->port) 107254721Semaste bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port); 108254721Semaste if (bt->irq) 109254721Semaste bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq); 110254721Semaste if (bt->drq) 111254721Semaste bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq); 112254721Semaste bt_free_softc(dev); 113254721Semaste} 114254721Semaste 115254721Semaste/* 116254721Semaste * Check if the device can be found at the port given 117254721Semaste * and if so, set it up ready for further work 118254721Semaste * as an argument, takes the isa_device structure from 119254721Semaste * autoconf.c 120254721Semaste */ 121254721Semastestatic int 122254721Semastebt_isa_probe(device_t dev) 123254721Semaste{ 124254721Semaste /* 125254721Semaste * find unit and check we have that many defined 126254721Semaste */ 127254721Semaste int port_index; 128254721Semaste int max_port_index; 129254721Semaste 130254721Semaste /* No pnp support */ 131254721Semaste if (isa_get_vendorid(dev)) 132254721Semaste return (ENXIO); 133254721Semaste 134254721Semaste port_index = 0; 135254721Semaste max_port_index = BT_NUM_ISAPORTS - 1; 136254721Semaste /* 137254721Semaste * Bound our board search if the user has 138254721Semaste * specified an exact port. 139254721Semaste */ 140254721Semaste bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index); 141254721Semaste 142254721Semaste if (port_index < 0) 143254721Semaste return (ENXIO); 144254721Semaste 145254721Semaste /* Attempt to find an adapter */ 146254721Semaste for (;port_index <= max_port_index; port_index++) { 147254721Semaste struct bt_probe_info info; 148254721Semaste u_int ioport; 149254721Semaste 150254721Semaste ioport = bt_iop_from_bio(port_index); 151254721Semaste 152254721Semaste /* 153254721Semaste * Ensure this port has not already been claimed already 154254721Semaste * by a PCI, EISA or ISA adapter. 155254721Semaste */ 156254721Semaste if (bt_check_probed_iop(ioport) != 0) 157254721Semaste continue; 158254721Semaste 159254721Semaste /* Initialise the softc for use during probing */ 160254721Semaste if (bt_isa_alloc_resources(dev, ioport, 161254721Semaste ioport + BT_NREGS -1) != 0) 162254721Semaste continue; 163254721Semaste 164254721Semaste /* We're going to attempt to probe it now, so mark it probed */ 165254721Semaste bt_mark_probed_bio(port_index); 166254721Semaste 167254721Semaste if (bt_port_probe(dev, &info) != 0) { 168254721Semaste if (bootverbose) 169254721Semaste printf("bt_isa_probe: Probe failed at 0x%x\n", 170254721Semaste ioport); 171254721Semaste bt_isa_release_resources(dev); 172254721Semaste continue; 173254721Semaste } 174254721Semaste 175254721Semaste bt_isa_release_resources(dev); 176254721Semaste 177254721Semaste bus_set_resource(dev, SYS_RES_DRQ, 0, info.drq, 1); 178254721Semaste bus_set_resource(dev, SYS_RES_IRQ, 0, info.irq, 1); 179254721Semaste 180254721Semaste return (0); 181254721Semaste } 182254721Semaste 183254721Semaste return (ENXIO); 184254721Semaste} 185254721Semaste 186254721Semaste/* 187254721Semaste * Attach all the sub-devices we can find 188254721Semaste */ 189254721Semastestatic int 190254721Semastebt_isa_attach(device_t dev) 191254721Semaste{ 192254721Semaste struct bt_softc *bt = device_get_softc(dev); 193254721Semaste bus_dma_filter_t *filter; 194 void *filter_arg; 195 bus_addr_t lowaddr; 196 int error, drq; 197 198 /* Initialise softc */ 199 error = bt_isa_alloc_resources(dev, 0, ~0); 200 if (error) { 201 device_printf(dev, "can't allocate resources in bt_isa_attach\n"); 202 return error; 203 } 204 205 /* Program the DMA channel for external control */ 206 if ((drq = isa_get_drq(dev)) != -1) 207 isa_dmacascade(drq); 208 209 /* Allocate our parent dmatag */ 210 filter = NULL; 211 filter_arg = NULL; 212 lowaddr = BUS_SPACE_MAXADDR_24BIT; 213 if (bt->model[0] == '4') { 214 /* 215 * This is a VL adapter. Typically, VL devices have access 216 * to the full 32bit address space. On BT-445S adapters 217 * prior to revision E, there is a hardware bug that causes 218 * corruption of transfers to/from addresses in the range of 219 * the BIOS modulo 16MB. The only properly functioning 220 * BT-445S Host Adapters have firmware version 3.37. 221 * If we encounter one of these adapters and the BIOS is 222 * installed, install a filter function for our bus_dma_map 223 * that will catch these accesses and bounce them to a safe 224 * region of memory. 225 */ 226 if (bt->bios_addr != 0 227 && strcmp(bt->model, "445S") == 0 228 && strcmp(bt->firmware_ver, "3.37") < 0) { 229 filter = btvlbouncefilter; 230 filter_arg = bt; 231 } else { 232 lowaddr = BUS_SPACE_MAXADDR_32BIT; 233 } 234 } 235 236 /* XXX Should be a child of the ISA or VL bus dma tag */ 237 if (bus_dma_tag_create( /* parent */ NULL, 238 /* alignemnt */ 1, 239 /* boundary */ 0, 240 /* lowaddr */ lowaddr, 241 /* highaddr */ BUS_SPACE_MAXADDR, 242 /* filter */ filter, 243 /* filterarg */ filter_arg, 244 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 245 /* nsegments */ ~0, 246 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 247 /* flags */ 0, 248 /* lockfunc */ busdma_lock_mutex, 249 /* lockarg */ &Giant, 250 &bt->parent_dmat) != 0) { 251 bt_isa_release_resources(dev); 252 return (ENOMEM); 253 } 254 255 error = bt_init(dev); 256 if (error) { 257 bt_isa_release_resources(dev); 258 return (ENOMEM); 259 } 260 261 if (lowaddr != BUS_SPACE_MAXADDR_32BIT) { 262 /* DMA tag for our sense buffers */ 263 if (bus_dma_tag_create( 264 /* parent */ bt->parent_dmat, 265 /* alignment */ 1, 266 /* boundary */ 0, 267 /* lowaddr */ BUS_SPACE_MAXADDR, 268 /* highaddr */ BUS_SPACE_MAXADDR, 269 /* filter */ NULL, 270 /* filterarg */ NULL, 271 /* maxsize */ bt->max_ccbs * 272 sizeof(struct scsi_sense_data), 273 /* nsegments */ 1, 274 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 275 /* flags */ 0, 276 /* lockfunc */ busdma_lock_mutex, 277 /* lockarg */ &Giant, 278 &bt->sense_dmat) != 0) { 279 bt_isa_release_resources(dev); 280 return (ENOMEM); 281 } 282 283 bt->init_level++; 284 285 /* Allocation of sense buffers */ 286 if (bus_dmamem_alloc(bt->sense_dmat, 287 (void **)&bt->sense_buffers, 288 BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) { 289 bt_isa_release_resources(dev); 290 return (ENOMEM); 291 } 292 293 bt->init_level++; 294 295 /* And permanently map them */ 296 bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap, 297 bt->sense_buffers, 298 bt->max_ccbs * sizeof(*bt->sense_buffers), 299 btmapsensebuffers, bt, /*flags*/0); 300 301 bt->init_level++; 302 } 303 304 error = bt_attach(dev); 305 if (error) { 306 bt_isa_release_resources(dev); 307 return (error); 308 } 309 310 return (0); 311} 312 313#define BIOS_MAP_SIZE (16 * 1024) 314 315static int 316btvlbouncefilter(void *arg, bus_addr_t addr) 317{ 318 struct bt_softc *bt; 319 320 bt = (struct bt_softc *)arg; 321 322 addr &= BUS_SPACE_MAXADDR_24BIT; 323 324 if (addr == 0 325 || (addr >= bt->bios_addr 326 && addr < (bt->bios_addr + BIOS_MAP_SIZE))) 327 return (1); 328 return (0); 329} 330 331static void 332btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error) 333{ 334 struct bt_softc* bt; 335 336 bt = (struct bt_softc*)arg; 337 bt->sense_buffers_physbase = segs->ds_addr; 338} 339 340static device_method_t bt_isa_methods[] = { 341 /* Device interface */ 342 DEVMETHOD(device_probe, bt_isa_probe), 343 DEVMETHOD(device_attach, bt_isa_attach), 344 345 { 0, 0 } 346}; 347 348static driver_t bt_isa_driver = { 349 "bt", 350 bt_isa_methods, 351 sizeof(struct bt_softc), 352}; 353 354static devclass_t bt_devclass; 355 356DRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, 0, 0); 357