aha_isa.c revision 52174
1/* 2 * Product specific probe and attach routines for: 3 * Adaptec 154x. 4 * 5 * Derived from code written by: 6 * 7 * Copyright (c) 1998 Justin T. Gibbs 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD: head/sys/dev/aha/aha_isa.c 52174 1999-10-12 21:35:51Z dfr $ 32 */ 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37 38#include <machine/bus_pio.h> 39#include <machine/bus.h> 40#include <machine/resource.h> 41#include <sys/module.h> 42#include <sys/bus.h> 43#include <sys/rman.h> 44 45#include <isa/isavar.h> 46 47#include <dev/aha/ahareg.h> 48 49#include <cam/scsi/scsi_all.h> 50 51static struct isa_pnp_id aha_ids[] = { 52 {AHA1542_PNP, NULL}, /* ADP1542 */ 53 {AHA1542_PNPCOMPAT, NULL}, /* PNP00A0 */ 54 {0} 55}; 56 57/* 58 * Check if the device can be found at the port given 59 * and if so, set it up ready for further work 60 * as an argument, takes the isa_device structure from 61 * autoconf.c 62 */ 63static int 64aha_isa_probe(device_t dev) 65{ 66 /* 67 * find unit and check we have that many defined 68 */ 69 struct aha_softc **sc = device_get_softc(dev); 70 struct aha_softc *aha; 71 int port_index; 72 int max_port_index; 73 int error; 74 u_long port_start, port_count; 75 struct resource *port_res; 76 int port_rid; 77 int drq; 78 int irq; 79 80 aha = NULL; 81 82 /* Check isapnp ids */ 83 if (ISA_PNP_PROBE(device_get_parent(dev), dev, aha_ids) == ENXIO) 84 return (ENXIO); 85 86 error = bus_get_resource(dev, SYS_RES_IOPORT, 0, 87 &port_start, &port_count); 88 if (error != 0) 89 port_start = 0; 90 91 /* 92 * Bound our board search if the user has 93 * specified an exact port. 94 */ 95 aha_find_probe_range(port_start, &port_index, &max_port_index); 96 97 if (port_index < 0) 98 return ENXIO; 99 100 /* Attempt to find an adapter */ 101 for (;port_index <= max_port_index; port_index++) { 102 config_data_t config_data; 103 u_int ioport; 104 int error; 105 106 ioport = aha_iop_from_bio(port_index); 107 108 /* 109 * Ensure this port has not already been claimed already 110 * by another adapter. 111 */ 112 if (aha_check_probed_iop(ioport) != 0) 113 continue; 114 error = bus_set_resource(dev, SYS_RES_IOPORT, 0, 115 ioport, AHA_NREGS); 116 if (error) 117 return error; 118 119 port_rid = 0; 120 port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid, 121 0, ~0, AHA_NREGS, RF_ACTIVE); 122 if (!port_res) 123 continue; 124 125 /* Allocate a softc for use during probing */ 126 aha = aha_alloc(device_get_unit(dev), rman_get_bustag(port_res), 127 rman_get_bushandle(port_res)); 128 129 if (aha == NULL) { 130 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, 131 port_res); 132 break; 133 } 134 135 /* We're going to attempt to probe it now, so mark it probed */ 136 aha_mark_probed_bio(port_index); 137 138 /* See if there is really a card present */ 139 if (aha_probe(aha) || aha_fetch_adapter_info(aha)) { 140 aha_free(aha); 141 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, 142 port_res); 143 continue; 144 } 145 146 /* 147 * Determine our IRQ, and DMA settings and 148 * export them to the configuration system. 149 */ 150 error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, 151 (u_int8_t*)&config_data, sizeof(config_data), 152 DEFAULT_CMD_TIMEOUT); 153 154 if (error != 0) { 155 printf("aha_isa_probe: Could not determine IRQ or DMA " 156 "settings for adapter at 0x%x. Failing probe\n", 157 ioport); 158 aha_free(aha); 159 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, 160 port_res); 161 continue; 162 } 163 164 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 165 166 switch (config_data.dma_chan) { 167 case DMA_CHAN_5: 168 drq = 5; 169 break; 170 case DMA_CHAN_6: 171 drq = 6; 172 break; 173 case DMA_CHAN_7: 174 drq = 7; 175 break; 176 default: 177 printf("aha_isa_probe: Invalid DMA setting " 178 "detected for adapter at 0x%x. " 179 "Failing probe\n", ioport); 180 return (ENXIO); 181 } 182 error = bus_set_resource(dev, SYS_RES_DRQ, 0, drq, 1); 183 if (error) 184 return error; 185 186 irq = ffs(config_data.irq) + 8; 187 error = bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1); 188 if (error) 189 return error; 190 191 *sc = aha; 192 aha_unit++; 193 194 return (0); 195 } 196 197 return (ENXIO); 198} 199 200/* 201 * Attach all the sub-devices we can find 202 */ 203static int 204aha_isa_attach(device_t dev) 205{ 206 struct aha_softc **sc = device_get_softc(dev); 207 struct aha_softc *aha; 208 bus_dma_filter_t *filter; 209 void *filter_arg; 210 bus_addr_t lowaddr; 211 struct resource *port_res; 212 int port_rid; 213 struct resource *irq_res; 214 int irq_rid; 215 struct resource *drq_res; 216 int drq_rid; 217 void *ih; 218 int error; 219 220 port_rid = 0; 221 port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid, 222 0, ~0, AHA_NREGS, RF_ACTIVE); 223 if (!port_res) { 224 device_printf(dev, "Unable to allocate I/O ports\n"); 225 return ENOMEM; 226 } 227 228 irq_rid = 0; 229 irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0, ~0, 1, 230 RF_ACTIVE); 231 if (!irq_res) { 232 device_printf(dev, "Unable to allocate excluse use of irq\n"); 233 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 234 return ENOMEM; 235 } 236 237 drq_rid = 0; 238 drq_res = bus_alloc_resource(dev, SYS_RES_DRQ, &drq_rid, 0, ~0, 1, 239 RF_ACTIVE); 240 if (!drq_res) { 241 device_printf(dev, "Unable to allocate drq\n"); 242 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 243 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 244 return ENOMEM; 245 } 246 247 aha = *sc; 248#if 0 /* is the drq ever unset? */ 249 if (dev->id_drq != -1) 250 isa_dmacascade(dev->id_drq); 251#endif 252 isa_dmacascade(rman_get_start(drq_res)); 253 254 /* Allocate our parent dmatag */ 255 filter = NULL; 256 filter_arg = NULL; 257 lowaddr = BUS_SPACE_MAXADDR_24BIT; 258 259 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0, 260 lowaddr, /*highaddr*/BUS_SPACE_MAXADDR, 261 filter, filter_arg, 262 /*maxsize*/BUS_SPACE_MAXSIZE_24BIT, 263 /*nsegments*/BUS_SPACE_UNRESTRICTED, 264 /*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT, 265 /*flags*/0, &aha->parent_dmat) != 0) { 266 aha_free(aha); 267 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 268 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 269 bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res); 270 return (ENOMEM); 271 } 272 273 if (aha_init(aha)) { 274 device_printf(dev, "init failed\n"); 275 aha_free(aha); 276 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 277 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 278 bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res); 279 return (ENOMEM); 280 } 281 282 error = aha_attach(aha); 283 if (error) { 284 device_printf(dev, "attach failed\n"); 285 aha_free(aha); 286 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 287 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 288 bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res); 289 return (error); 290 } 291 292 error = bus_setup_intr(dev, irq_res, INTR_TYPE_CAM, aha_intr, aha, 293 &ih); 294 if (error) { 295 device_printf(dev, "Unable to register interrupt handler\n"); 296 aha_free(aha); 297 bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res); 298 bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res); 299 bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res); 300 return (error); 301 } 302 303 return (0); 304} 305 306static device_method_t aha_isa_methods[] = { 307 /* Device interface */ 308 DEVMETHOD(device_probe, aha_isa_probe), 309 DEVMETHOD(device_attach, aha_isa_attach), 310 311 { 0, 0 } 312}; 313 314static driver_t aha_isa_driver = { 315 "aha", 316 aha_isa_methods, 317 sizeof(struct aha_softc*), 318}; 319 320static devclass_t aha_devclass; 321 322DRIVER_MODULE(aha, isa, aha_isa_driver, aha_devclass, 0, 0); 323