| 1 | /* |
| 2 | * Copyright (c) 1996, Sujal M. Patel |
| 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 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | * |
| 26 | * $FreeBSD: src/sys/isa/pnp.c,v 1.5.2.1 2002/10/14 09:31:09 nyan Exp $ |
| 27 | * $DragonFly: src/sys/bus/isa/pnp.c,v 1.5 2004/04/07 05:54:32 dillon Exp $ |
| 28 | * from: pnp.c,v 1.11 1999/05/06 22:11:19 peter Exp |
| 29 | */ |
| 30 | |
| 31 | #include <sys/param.h> |
| 32 | #include <sys/systm.h> |
| 33 | #include <sys/kernel.h> |
| 34 | #include <sys/module.h> |
| 35 | #include <sys/bus.h> |
| 36 | #include <sys/malloc.h> |
| 37 | #include "isavar.h" |
| 38 | #include "pnpreg.h" |
| 39 | #include "pnpvar.h" |
| 40 | #include <machine/clock.h> |
| 41 | |
| 42 | typedef struct _pnp_id { |
| 43 | u_int32_t vendor_id; |
| 44 | u_int32_t serial; |
| 45 | u_char checksum; |
| 46 | } pnp_id; |
| 47 | |
| 48 | struct pnp_set_config_arg { |
| 49 | int csn; /* Card number to configure */ |
| 50 | int ldn; /* Logical device on card */ |
| 51 | }; |
| 52 | |
| 53 | struct pnp_quirk { |
| 54 | u_int32_t vendor_id; /* Vendor of the card */ |
| 55 | u_int32_t logical_id; /* ID of the device with quirk */ |
| 56 | int type; |
| 57 | int arg1; |
| 58 | int arg2; |
| 59 | }; |
| 60 | |
| 61 | #define PNP_QUIRK_WRITE_REG 1 /* Need to write a pnp register */ |
| 62 | #define PNP_QUIRK_EXTRA_IO 2 /* Has extra io ports */ |
| 63 | |
| 64 | struct pnp_quirk pnp_quirks[] = { |
| 65 | /* |
| 66 | * The Gravis UltraSound needs register 0xf2 to be set to 0xff |
| 67 | * to enable power. |
| 68 | * XXX need to know the logical device id. |
| 69 | */ |
| 70 | { 0x0100561e /* GRV0001 */, 0, |
| 71 | PNP_QUIRK_WRITE_REG, 0xf2, 0xff }, |
| 72 | /* |
| 73 | * An emu8000 does not give us other than the first |
| 74 | * port. |
| 75 | */ |
| 76 | { 0x0100561e /* GRV0001 */, 0, |
| 77 | PNP_QUIRK_WRITE_REG, 0xf2, 0xff }, |
| 78 | /* |
| 79 | * An emu8000 does not give us other than the first |
| 80 | * port. |
| 81 | */ |
| 82 | { 0x26008c0e /* SB16 */, 0x21008c0e, |
| 83 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 84 | { 0x42008c0e /* SB32(CTL0042) */, 0x21008c0e, |
| 85 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 86 | { 0x44008c0e /* SB32(CTL0044) */, 0x21008c0e, |
| 87 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 88 | { 0x49008c0e /* SB32(CTL0049) */, 0x21008c0e, |
| 89 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 90 | { 0xf1008c0e /* SB32(CTL00f1) */, 0x21008c0e, |
| 91 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 92 | { 0xc1008c0e /* SB64(CTL00c1) */, 0x22008c0e, |
| 93 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 94 | { 0xc5008c0e /* SB64(CTL00c5) */, 0x22008c0e, |
| 95 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 96 | { 0xe4008c0e /* SB64(CTL00e4) */, 0x22008c0e, |
| 97 | PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, |
| 98 | |
| 99 | { 0 } |
| 100 | }; |
| 101 | |
| 102 | #ifdef PC98 |
| 103 | /* Some NEC PnP cards have 9 bytes serial code. */ |
| 104 | static pnp_id necids[] = { |
| 105 | {0x4180a3b8, 0xffffffff, 0x00}, /* PC-9801CB-B04 (NEC8041) */ |
| 106 | {0x5181a3b8, 0xffffffff, 0x46}, /* PC-9821CB2-B04(NEC8151) */ |
| 107 | {0x5182a3b8, 0xffffffff, 0xb8}, /* PC-9801-XX (NEC8251) */ |
| 108 | {0x9181a3b8, 0xffffffff, 0x00}, /* PC-9801-120 (NEC8191) */ |
| 109 | {0, 0, 0} |
| 110 | }; |
| 111 | #endif |
| 112 | |
| 113 | #if 0 |
| 114 | /* |
| 115 | * these entries are initialized using the autoconfig menu |
| 116 | * The struct is invalid (and must be initialized) if the first |
| 117 | * CSN is zero. The init code fills invalid entries with CSN 255 |
| 118 | * which is not a supported value. |
| 119 | */ |
| 120 | |
| 121 | struct pnp_cinfo pnp_ldn_overrides[MAX_PNP_LDN] = { |
| 122 | { 0 } |
| 123 | }; |
| 124 | #endif |
| 125 | |
| 126 | /* The READ_DATA port that we are using currently */ |
| 127 | static int pnp_rd_port; |
| 128 | |
| 129 | static void pnp_send_initiation_key(void); |
| 130 | static int pnp_get_serial(pnp_id *p); |
| 131 | static int pnp_isolation_protocol(device_t parent); |
| 132 | |
| 133 | char * |
| 134 | pnp_eisaformat(u_int32_t id) |
| 135 | { |
| 136 | u_int8_t *data = (u_int8_t *) &id; |
| 137 | static char idbuf[8]; |
| 138 | const char hextoascii[] = "0123456789abcdef"; |
| 139 | |
| 140 | idbuf[0] = '@' + ((data[0] & 0x7c) >> 2); |
| 141 | idbuf[1] = '@' + (((data[0] & 0x3) << 3) + ((data[1] & 0xe0) >> 5)); |
| 142 | idbuf[2] = '@' + (data[1] & 0x1f); |
| 143 | idbuf[3] = hextoascii[(data[2] >> 4)]; |
| 144 | idbuf[4] = hextoascii[(data[2] & 0xf)]; |
| 145 | idbuf[5] = hextoascii[(data[3] >> 4)]; |
| 146 | idbuf[6] = hextoascii[(data[3] & 0xf)]; |
| 147 | idbuf[7] = 0; |
| 148 | return(idbuf); |
| 149 | } |
| 150 | |
| 151 | static void |
| 152 | pnp_write(int d, u_char r) |
| 153 | { |
| 154 | outb (_PNP_ADDRESS, d); |
| 155 | outb (_PNP_WRITE_DATA, r); |
| 156 | } |
| 157 | |
| 158 | #if 0 |
| 159 | |
| 160 | static u_char |
| 161 | pnp_read(int d) |
| 162 | { |
| 163 | outb (_PNP_ADDRESS, d); |
| 164 | return (inb(3 | (pnp_rd_port <<2))); |
| 165 | } |
| 166 | |
| 167 | #endif |
| 168 | |
| 169 | /* |
| 170 | * Send Initiation LFSR as described in "Plug and Play ISA Specification", |
| 171 | * Intel May 94. |
| 172 | */ |
| 173 | static void |
| 174 | pnp_send_initiation_key() |
| 175 | { |
| 176 | int cur, i; |
| 177 | |
| 178 | /* Reset the LSFR */ |
| 179 | outb(_PNP_ADDRESS, 0); |
| 180 | outb(_PNP_ADDRESS, 0); /* yes, we do need it twice! */ |
| 181 | |
| 182 | cur = 0x6a; |
| 183 | outb(_PNP_ADDRESS, cur); |
| 184 | |
| 185 | for (i = 1; i < 32; i++) { |
| 186 | cur = (cur >> 1) | (((cur ^ (cur >> 1)) << 7) & 0xff); |
| 187 | outb(_PNP_ADDRESS, cur); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | |
| 192 | /* |
| 193 | * Get the device's serial number. Returns 1 if the serial is valid. |
| 194 | */ |
| 195 | static int |
| 196 | pnp_get_serial(pnp_id *p) |
| 197 | { |
| 198 | int i, bit, valid = 0, sum = 0x6a; |
| 199 | u_char *data = (u_char *)p; |
| 200 | |
| 201 | bzero(data, sizeof(char) * 9); |
| 202 | outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION); |
| 203 | for (i = 0; i < 72; i++) { |
| 204 | bit = inb((pnp_rd_port << 2) | 0x3) == 0x55; |
| 205 | DELAY(250); /* Delay 250 usec */ |
| 206 | |
| 207 | /* Can't Short Circuit the next evaluation, so 'and' is last */ |
| 208 | bit = (inb((pnp_rd_port << 2) | 0x3) == 0xaa) && bit; |
| 209 | DELAY(250); /* Delay 250 usec */ |
| 210 | |
| 211 | valid = valid || bit; |
| 212 | |
| 213 | if (i < 64) |
| 214 | sum = (sum >> 1) | |
| 215 | (((sum ^ (sum >> 1) ^ bit) << 7) & 0xff); |
| 216 | |
| 217 | data[i / 8] = (data[i / 8] >> 1) | (bit ? 0x80 : 0); |
| 218 | } |
| 219 | |
| 220 | valid = valid && (data[8] == sum); |
| 221 | |
| 222 | return valid; |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * Fill's the buffer with resource info from the device. |
| 227 | * Returns the number of characters read. |
| 228 | */ |
| 229 | static int |
| 230 | pnp_get_resource_info(u_char *buffer, int len) |
| 231 | { |
| 232 | int i, j, count; |
| 233 | u_char temp; |
| 234 | |
| 235 | count = 0; |
| 236 | for (i = 0; i < len; i++) { |
| 237 | outb(_PNP_ADDRESS, PNP_STATUS); |
| 238 | for (j = 0; j < 100; j++) { |
| 239 | if ((inb((pnp_rd_port << 2) | 0x3)) & 0x1) |
| 240 | break; |
| 241 | DELAY(1); |
| 242 | } |
| 243 | if (j == 100) { |
| 244 | printf("PnP device failed to report resource data\n"); |
| 245 | return count; |
| 246 | } |
| 247 | outb(_PNP_ADDRESS, PNP_RESOURCE_DATA); |
| 248 | temp = inb((pnp_rd_port << 2) | 0x3); |
| 249 | if (buffer != NULL) |
| 250 | buffer[i] = temp; |
| 251 | count++; |
| 252 | } |
| 253 | return count; |
| 254 | } |
| 255 | |
| 256 | #if 0 |
| 257 | /* |
| 258 | * write_pnp_parms initializes a logical device with the parms |
| 259 | * in d, and then activates the board if the last parameter is 1. |
| 260 | */ |
| 261 | |
| 262 | static int |
| 263 | write_pnp_parms(struct pnp_cinfo *d, pnp_id *p, int ldn) |
| 264 | { |
| 265 | int i, empty = -1 ; |
| 266 | |
| 267 | pnp_write (SET_LDN, ldn ); |
| 268 | i = pnp_read(SET_LDN) ; |
| 269 | if (i != ldn) { |
| 270 | printf("Warning: LDN %d does not exist\n", ldn); |
| 271 | } |
| 272 | for (i = 0; i < 8; i++) { |
| 273 | pnp_write(IO_CONFIG_BASE + i * 2, d->ic_port[i] >> 8 ); |
| 274 | pnp_write(IO_CONFIG_BASE + i * 2 + 1, d->ic_port[i] & 0xff ); |
| 275 | } |
| 276 | for (i = 0; i < 4; i++) { |
| 277 | pnp_write(MEM_CONFIG + i*8, (d->ic_mem[i].base >> 16) & 0xff ); |
| 278 | pnp_write(MEM_CONFIG + i*8+1, (d->ic_mem[i].base >> 8) & 0xff ); |
| 279 | pnp_write(MEM_CONFIG + i*8+2, d->ic_mem[i].control & 0xff ); |
| 280 | pnp_write(MEM_CONFIG + i*8+3, (d->ic_mem[i].range >> 16) & 0xff ); |
| 281 | pnp_write(MEM_CONFIG + i*8+4, (d->ic_mem[i].range >> 8) & 0xff ); |
| 282 | } |
| 283 | for (i = 0; i < 2; i++) { |
| 284 | pnp_write(IRQ_CONFIG + i*2 , d->irq[i] ); |
| 285 | pnp_write(IRQ_CONFIG + i*2 + 1, d->irq_type[i] ); |
| 286 | pnp_write(DRQ_CONFIG + i, d->drq[i] ); |
| 287 | } |
| 288 | /* |
| 289 | * store parameters read into the current kernel |
| 290 | * so manual editing next time is easier |
| 291 | */ |
| 292 | for (i = 0 ; i < MAX_PNP_LDN; i++) { |
| 293 | if (pnp_ldn_overrides[i].csn == d->csn && |
| 294 | pnp_ldn_overrides[i].ldn == ldn) { |
| 295 | d->flags = pnp_ldn_overrides[i].flags ; |
| 296 | pnp_ldn_overrides[i] = *d ; |
| 297 | break ; |
| 298 | } else if (pnp_ldn_overrides[i].csn < 1 || |
| 299 | pnp_ldn_overrides[i].csn == 255) |
| 300 | empty = i ; |
| 301 | } |
| 302 | if (i== MAX_PNP_LDN && empty != -1) |
| 303 | pnp_ldn_overrides[empty] = *d; |
| 304 | |
| 305 | /* |
| 306 | * Here should really perform the range check, and |
| 307 | * return a failure if not successful. |
| 308 | */ |
| 309 | pnp_write (IO_RANGE_CHECK, 0); |
| 310 | DELAY(1000); /* XXX is it really necessary ? */ |
| 311 | pnp_write (ACTIVATE, d->enable ? 1 : 0); |
| 312 | DELAY(1000); /* XXX is it really necessary ? */ |
| 313 | return 1 ; |
| 314 | } |
| 315 | #endif |
| 316 | |
| 317 | /* |
| 318 | * This function is called after the bus has assigned resource |
| 319 | * locations for a logical device. |
| 320 | */ |
| 321 | static void |
| 322 | pnp_set_config(void *arg, struct isa_config *config, int enable) |
| 323 | { |
| 324 | int csn = ((struct pnp_set_config_arg *) arg)->csn; |
| 325 | int ldn = ((struct pnp_set_config_arg *) arg)->ldn; |
| 326 | int i; |
| 327 | |
| 328 | /* |
| 329 | * First put all cards into Sleep state with the initiation |
| 330 | * key, then put our card into Config state. |
| 331 | */ |
| 332 | pnp_send_initiation_key(); |
| 333 | pnp_write(PNP_WAKE, csn); |
| 334 | |
| 335 | /* |
| 336 | * Select our logical device so that we can program it. |
| 337 | */ |
| 338 | pnp_write(PNP_SET_LDN, ldn); |
| 339 | |
| 340 | /* |
| 341 | * Now program the resources. |
| 342 | */ |
| 343 | for (i = 0; i < config->ic_nmem; i++) { |
| 344 | u_int32_t start = config->ic_mem[i].ir_start; |
| 345 | u_int32_t size = config->ic_mem[i].ir_size; |
| 346 | if (start & 0xff) |
| 347 | panic("pnp_set_config: bogus memory assignment"); |
| 348 | pnp_write(PNP_MEM_BASE_HIGH(i), (start >> 16) & 0xff); |
| 349 | pnp_write(PNP_MEM_BASE_LOW(i), (start >> 8) & 0xff); |
| 350 | pnp_write(PNP_MEM_RANGE_HIGH(i), (size >> 16) & 0xff); |
| 351 | pnp_write(PNP_MEM_RANGE_LOW(i), (size >> 8) & 0xff); |
| 352 | } |
| 353 | for (; i < ISA_NMEM; i++) { |
| 354 | pnp_write(PNP_MEM_BASE_HIGH(i), 0); |
| 355 | pnp_write(PNP_MEM_BASE_LOW(i), 0); |
| 356 | pnp_write(PNP_MEM_RANGE_HIGH(i), 0); |
| 357 | pnp_write(PNP_MEM_RANGE_LOW(i), 0); |
| 358 | } |
| 359 | |
| 360 | for (i = 0; i < config->ic_nport; i++) { |
| 361 | u_int32_t start = config->ic_port[i].ir_start; |
| 362 | pnp_write(PNP_IO_BASE_HIGH(i), (start >> 8) & 0xff); |
| 363 | pnp_write(PNP_IO_BASE_LOW(i), (start >> 0) & 0xff); |
| 364 | } |
| 365 | for (; i < ISA_NPORT; i++) { |
| 366 | pnp_write(PNP_IO_BASE_HIGH(i), 0); |
| 367 | pnp_write(PNP_IO_BASE_LOW(i), 0); |
| 368 | } |
| 369 | |
| 370 | for (i = 0; i < config->ic_nirq; i++) { |
| 371 | int irq = ffs(config->ic_irqmask[i]) - 1; |
| 372 | pnp_write(PNP_IRQ_LEVEL(i), irq); |
| 373 | pnp_write(PNP_IRQ_TYPE(i), 2); /* XXX */ |
| 374 | } |
| 375 | for (; i < ISA_NIRQ; i++) { |
| 376 | /* |
| 377 | * IRQ 0 is not a valid interrupt selection and |
| 378 | * represents no interrupt selection. |
| 379 | */ |
| 380 | pnp_write(PNP_IRQ_LEVEL(i), 0); |
| 381 | } |
| 382 | |
| 383 | for (i = 0; i < config->ic_ndrq; i++) { |
| 384 | int drq = ffs(config->ic_drqmask[i]) - 1; |
| 385 | pnp_write(PNP_DMA_CHANNEL(i), drq); |
| 386 | } |
| 387 | for (; i < ISA_NDRQ; i++) { |
| 388 | /* |
| 389 | * DMA channel 4, the cascade channel is used to |
| 390 | * indicate no DMA channel is active. |
| 391 | */ |
| 392 | pnp_write(PNP_DMA_CHANNEL(i), 4); |
| 393 | } |
| 394 | |
| 395 | pnp_write(PNP_ACTIVATE, enable ? 1 : 0); |
| 396 | |
| 397 | /* |
| 398 | * Wake everyone up again, we are finished. |
| 399 | */ |
| 400 | pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY); |
| 401 | } |
| 402 | |
| 403 | /* |
| 404 | * Process quirks for a logical device.. The card must be in Config state. |
| 405 | */ |
| 406 | void |
| 407 | pnp_check_quirks(u_int32_t vendor_id, u_int32_t logical_id, |
| 408 | int ldn, struct isa_config *config) |
| 409 | { |
| 410 | struct pnp_quirk *qp; |
| 411 | |
| 412 | for (qp = &pnp_quirks[0]; qp->vendor_id; qp++) { |
| 413 | if (qp->vendor_id == vendor_id |
| 414 | && (qp->logical_id == 0 |
| 415 | || qp->logical_id == logical_id)) { |
| 416 | switch (qp->type) { |
| 417 | case PNP_QUIRK_WRITE_REG: |
| 418 | pnp_write(PNP_SET_LDN, ldn); |
| 419 | pnp_write(qp->arg1, qp->arg2); |
| 420 | break; |
| 421 | case PNP_QUIRK_EXTRA_IO: |
| 422 | if (config == NULL) |
| 423 | break; |
| 424 | if (qp->arg1 != 0) { |
| 425 | config->ic_nport++; |
| 426 | config->ic_port[config->ic_nport - 1] = config->ic_port[0]; |
| 427 | config->ic_port[config->ic_nport - 1].ir_start += qp->arg1; |
| 428 | config->ic_port[config->ic_nport - 1].ir_end += qp->arg1; |
| 429 | } |
| 430 | if (qp->arg2 != 0) { |
| 431 | config->ic_nport++; |
| 432 | config->ic_port[config->ic_nport - 1] = config->ic_port[0]; |
| 433 | config->ic_port[config->ic_nport - 1].ir_start += qp->arg2; |
| 434 | config->ic_port[config->ic_nport - 1].ir_end += qp->arg2; |
| 435 | } |
| 436 | break; |
| 437 | |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | /* |
| 444 | * Scan Resource Data for Logical Devices. |
| 445 | * |
| 446 | * This function exits as soon as it gets an error reading *ANY* |
| 447 | * Resource Data or it reaches the end of Resource Data. In the first |
| 448 | * case the return value will be TRUE, FALSE otherwise. |
| 449 | */ |
| 450 | static int |
| 451 | pnp_create_devices(device_t parent, pnp_id *p, int csn, |
| 452 | u_char *resources, int len) |
| 453 | { |
| 454 | u_char tag, *resp, *resinfo, *startres = 0; |
| 455 | int large_len, scanning = len, retval = FALSE; |
| 456 | u_int32_t logical_id; |
| 457 | u_int32_t compat_id; |
| 458 | device_t dev = 0; |
| 459 | int ldn = 0; |
| 460 | struct pnp_set_config_arg *csnldn; |
| 461 | char buf[100]; |
| 462 | char *desc = 0; |
| 463 | |
| 464 | resp = resources; |
| 465 | while (scanning > 0) { |
| 466 | tag = *resp++; |
| 467 | scanning--; |
| 468 | if (PNP_RES_TYPE(tag) != 0) { |
| 469 | /* Large resource */ |
| 470 | if (scanning < 2) { |
| 471 | scanning = 0; |
| 472 | continue; |
| 473 | } |
| 474 | large_len = resp[0] + (resp[1] << 8); |
| 475 | resp += 2; |
| 476 | |
| 477 | if (scanning < large_len) { |
| 478 | scanning = 0; |
| 479 | continue; |
| 480 | } |
| 481 | resinfo = resp; |
| 482 | resp += large_len; |
| 483 | scanning -= large_len; |
| 484 | |
| 485 | if (PNP_LRES_NUM(tag) == PNP_TAG_ID_ANSI) { |
| 486 | if (large_len > sizeof(buf) - 1) |
| 487 | large_len = sizeof(buf) - 1; |
| 488 | bcopy(resinfo, buf, large_len); |
| 489 | |
| 490 | /* |
| 491 | * Trim trailing spaces. |
| 492 | */ |
| 493 | while (buf[large_len-1] == ' ') |
| 494 | large_len--; |
| 495 | buf[large_len] = '\0'; |
| 496 | desc = buf; |
| 497 | if (dev) |
| 498 | device_set_desc_copy(dev, desc); |
| 499 | continue; |
| 500 | } |
| 501 | |
| 502 | continue; |
| 503 | } |
| 504 | |
| 505 | /* Small resource */ |
| 506 | if (scanning < PNP_SRES_LEN(tag)) { |
| 507 | scanning = 0; |
| 508 | continue; |
| 509 | } |
| 510 | resinfo = resp; |
| 511 | resp += PNP_SRES_LEN(tag); |
| 512 | scanning -= PNP_SRES_LEN(tag);; |
| 513 | |
| 514 | switch (PNP_SRES_NUM(tag)) { |
| 515 | case PNP_TAG_LOGICAL_DEVICE: |
| 516 | /* |
| 517 | * Parse the resources for the previous |
| 518 | * logical device (if any). |
| 519 | */ |
| 520 | if (startres) { |
| 521 | pnp_parse_resources(dev, startres, |
| 522 | resinfo - startres - 1, ldn); |
| 523 | dev = 0; |
| 524 | startres = 0; |
| 525 | } |
| 526 | |
| 527 | /* |
| 528 | * A new logical device. Scan for end of |
| 529 | * resources. |
| 530 | */ |
| 531 | bcopy(resinfo, &logical_id, 4); |
| 532 | pnp_check_quirks(p->vendor_id, logical_id, ldn, NULL); |
| 533 | compat_id = 0; |
| 534 | dev = BUS_ADD_CHILD(parent, ISA_ORDER_PNP, NULL, -1); |
| 535 | if (desc) |
| 536 | device_set_desc_copy(dev, desc); |
| 537 | isa_set_vendorid(dev, p->vendor_id); |
| 538 | isa_set_serial(dev, p->serial); |
| 539 | isa_set_logicalid(dev, logical_id); |
| 540 | csnldn = malloc(sizeof *csnldn, M_DEVBUF, M_WAITOK); |
| 541 | csnldn->csn = csn; |
| 542 | csnldn->ldn = ldn; |
| 543 | ISA_SET_CONFIG_CALLBACK(parent, dev, |
| 544 | pnp_set_config, csnldn); |
| 545 | ldn++; |
| 546 | startres = resp; |
| 547 | break; |
| 548 | |
| 549 | case PNP_TAG_END: |
| 550 | if (!startres) { |
| 551 | device_printf(parent, |
| 552 | "malformed resources\n"); |
| 553 | scanning = 0; |
| 554 | break; |
| 555 | } |
| 556 | pnp_parse_resources(dev, startres, |
| 557 | resinfo - startres - 1, ldn); |
| 558 | dev = 0; |
| 559 | startres = 0; |
| 560 | scanning = 0; |
| 561 | break; |
| 562 | |
| 563 | default: |
| 564 | /* Skip this resource */ |
| 565 | break; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | return retval; |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * Read 'amount' bytes of resources from the card, allocating memory |
| 574 | * as needed. If a buffer is already available, it should be passed in |
| 575 | * '*resourcesp' and its length in '*spacep'. The number of resource |
| 576 | * bytes already in the buffer should be passed in '*lenp'. The memory |
| 577 | * allocated will be returned in '*resourcesp' with its size and the |
| 578 | * number of bytes of resources in '*spacep' and '*lenp' respectively. |
| 579 | */ |
| 580 | static int |
| 581 | pnp_read_bytes(int amount, u_char **resourcesp, int *spacep, int *lenp) |
| 582 | { |
| 583 | u_char *resources = *resourcesp; |
| 584 | u_char *newres; |
| 585 | int space = *spacep; |
| 586 | int len = *lenp; |
| 587 | |
| 588 | if (space == 0) { |
| 589 | space = 1024; |
| 590 | resources = malloc(space, M_TEMP, M_WAITOK); |
| 591 | } |
| 592 | |
| 593 | if (len + amount > space) { |
| 594 | int extra = 1024; |
| 595 | while (len + amount > space + extra) |
| 596 | extra += 1024; |
| 597 | newres = malloc(space + extra, M_TEMP, M_WAITOK); |
| 598 | bcopy(resources, newres, len); |
| 599 | free(resources, M_TEMP); |
| 600 | resources = newres; |
| 601 | space += extra; |
| 602 | } |
| 603 | |
| 604 | if (pnp_get_resource_info(resources + len, amount) != amount) |
| 605 | return EINVAL; |
| 606 | len += amount; |
| 607 | |
| 608 | *resourcesp = resources; |
| 609 | *spacep = space; |
| 610 | *lenp = len; |
| 611 | |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | /* |
| 616 | * Read all resources from the card, allocating memory as needed. If a |
| 617 | * buffer is already available, it should be passed in '*resourcesp' |
| 618 | * and its length in '*spacep'. The memory allocated will be returned |
| 619 | * in '*resourcesp' with its size and the number of bytes of resources |
| 620 | * in '*spacep' and '*lenp' respectively. |
| 621 | */ |
| 622 | static int |
| 623 | pnp_read_resources(u_char **resourcesp, int *spacep, int *lenp) |
| 624 | { |
| 625 | u_char *resources = *resourcesp; |
| 626 | int space = *spacep; |
| 627 | int len = 0; |
| 628 | int error, done; |
| 629 | u_char tag; |
| 630 | |
| 631 | error = 0; |
| 632 | done = 0; |
| 633 | while (!done) { |
| 634 | error = pnp_read_bytes(1, &resources, &space, &len); |
| 635 | if (error) |
| 636 | goto out; |
| 637 | tag = resources[len-1]; |
| 638 | if (PNP_RES_TYPE(tag) == 0) { |
| 639 | /* |
| 640 | * Small resource, read contents. |
| 641 | */ |
| 642 | error = pnp_read_bytes(PNP_SRES_LEN(tag), |
| 643 | &resources, &space, &len); |
| 644 | if (error) |
| 645 | goto out; |
| 646 | if (PNP_SRES_NUM(tag) == PNP_TAG_END) |
| 647 | done = 1; |
| 648 | } else { |
| 649 | /* |
| 650 | * Large resource, read length and contents. |
| 651 | */ |
| 652 | error = pnp_read_bytes(2, &resources, &space, &len); |
| 653 | if (error) |
| 654 | goto out; |
| 655 | error = pnp_read_bytes(resources[len-2] |
| 656 | + (resources[len-1] << 8), |
| 657 | &resources, &space, &len); |
| 658 | if (error) |
| 659 | goto out; |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | out: |
| 664 | *resourcesp = resources; |
| 665 | *spacep = space; |
| 666 | *lenp = len; |
| 667 | return error; |
| 668 | } |
| 669 | |
| 670 | /* |
| 671 | * Run the isolation protocol. Use pnp_rd_port as the READ_DATA port |
| 672 | * value (caller should try multiple READ_DATA locations before giving |
| 673 | * up). Upon exiting, all cards are aware that they should use |
| 674 | * pnp_rd_port as the READ_DATA port. |
| 675 | * |
| 676 | * In the first pass, a csn is assigned to each board and pnp_id's |
| 677 | * are saved to an array, pnp_devices. In the second pass, each |
| 678 | * card is woken up and the device configuration is called. |
| 679 | */ |
| 680 | static int |
| 681 | pnp_isolation_protocol(device_t parent) |
| 682 | { |
| 683 | int csn; |
| 684 | pnp_id id; |
| 685 | int found = 0, len; |
| 686 | u_char *resources = 0; |
| 687 | int space = 0; |
| 688 | int error; |
| 689 | #ifdef PC98 |
| 690 | int n, necpnp; |
| 691 | u_char buffer[10]; |
| 692 | #endif |
| 693 | |
| 694 | /* |
| 695 | * Put all cards into the Sleep state so that we can clear |
| 696 | * their CSNs. |
| 697 | */ |
| 698 | pnp_send_initiation_key(); |
| 699 | |
| 700 | /* |
| 701 | * Clear the CSN for all cards. |
| 702 | */ |
| 703 | pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_RESET_CSN); |
| 704 | |
| 705 | /* |
| 706 | * Move all cards to the Isolation state. |
| 707 | */ |
| 708 | pnp_write(PNP_WAKE, 0); |
| 709 | |
| 710 | /* |
| 711 | * Tell them where the read point is going to be this time. |
| 712 | */ |
| 713 | pnp_write(PNP_SET_RD_DATA, pnp_rd_port); |
| 714 | |
| 715 | for (csn = 1; csn < PNP_MAX_CARDS; csn++) { |
| 716 | /* |
| 717 | * Start the serial isolation protocol. |
| 718 | */ |
| 719 | outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION); |
| 720 | DELAY(1000); /* Delay 1 msec */ |
| 721 | |
| 722 | if (pnp_get_serial(&id)) { |
| 723 | /* |
| 724 | * We have read the id from a card |
| 725 | * successfully. The card which won the |
| 726 | * isolation protocol will be in Isolation |
| 727 | * mode and all others will be in Sleep. |
| 728 | * Program the CSN of the isolated card |
| 729 | * (taking it to Config state) and read its |
| 730 | * resources, creating devices as we find |
| 731 | * logical devices on the card. |
| 732 | */ |
| 733 | pnp_write(PNP_SET_CSN, csn); |
| 734 | #ifdef PC98 |
| 735 | if (bootverbose) |
| 736 | printf("PnP Vendor ID = %x\n", id.vendor_id); |
| 737 | /* Check for NEC PnP (9 bytes serial). */ |
| 738 | for (n = necpnp = 0; necids[n].vendor_id; n++) { |
| 739 | if (id.vendor_id == necids[n].vendor_id) { |
| 740 | necpnp = 1; |
| 741 | break; |
| 742 | } |
| 743 | } |
| 744 | if (necpnp) { |
| 745 | if (bootverbose) |
| 746 | printf("It seems to NEC-PnP card (%s).\n", |
| 747 | pnp_eisaformat(id.vendor_id)); |
| 748 | /* Read dummy 9 bytes serial area. */ |
| 749 | pnp_get_resource_info(buffer, 9); |
| 750 | } else { |
| 751 | if (bootverbose) |
| 752 | printf("It seems to Normal-ISA-PnP card (%s).\n", |
| 753 | pnp_eisaformat(id.vendor_id)); |
| 754 | } |
| 755 | if (bootverbose) |
| 756 | printf("Reading PnP configuration for %s.\n", |
| 757 | pnp_eisaformat(id.vendor_id)); |
| 758 | #endif |
| 759 | error = pnp_read_resources(&resources, |
| 760 | &space, |
| 761 | &len); |
| 762 | if (error) |
| 763 | break; |
| 764 | pnp_create_devices(parent, &id, csn, |
| 765 | resources, len); |
| 766 | found++; |
| 767 | } else |
| 768 | break; |
| 769 | |
| 770 | /* |
| 771 | * Put this card back to the Sleep state and |
| 772 | * simultaneously move all cards which don't have a |
| 773 | * CSN yet to Isolation state. |
| 774 | */ |
| 775 | pnp_write(PNP_WAKE, 0); |
| 776 | } |
| 777 | |
| 778 | /* |
| 779 | * Unless we have chosen the wrong read port, all cards will |
| 780 | * be in Sleep state. Put them back into WaitForKey for |
| 781 | * now. Their resources will be programmed later. |
| 782 | */ |
| 783 | pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY); |
| 784 | |
| 785 | /* |
| 786 | * Cleanup. |
| 787 | */ |
| 788 | if (resources) |
| 789 | free(resources, M_TEMP); |
| 790 | |
| 791 | return found; |
| 792 | } |
| 793 | |
| 794 | |
| 795 | /* |
| 796 | * pnp_identify() |
| 797 | * |
| 798 | * autoconfiguration of pnp devices. This routine just runs the |
| 799 | * isolation protocol over several ports, until one is successful. |
| 800 | * |
| 801 | * may be called more than once ? |
| 802 | * |
| 803 | */ |
| 804 | |
| 805 | static void |
| 806 | pnp_identify(driver_t *driver, device_t parent) |
| 807 | { |
| 808 | int num_pnp_devs; |
| 809 | |
| 810 | #if 0 |
| 811 | if (pnp_ldn_overrides[0].csn == 0) { |
| 812 | if (bootverbose) |
| 813 | printf("Initializing PnP override table\n"); |
| 814 | bzero (pnp_ldn_overrides, sizeof(pnp_ldn_overrides)); |
| 815 | pnp_ldn_overrides[0].csn = 255 ; |
| 816 | } |
| 817 | #endif |
| 818 | |
| 819 | /* Try various READ_DATA ports from 0x203-0x3ff */ |
| 820 | for (pnp_rd_port = 0x80; (pnp_rd_port < 0xff); pnp_rd_port += 0x10) { |
| 821 | if (bootverbose) |
| 822 | printf("Trying Read_Port at %x\n", (pnp_rd_port << 2) | 0x3); |
| 823 | |
| 824 | num_pnp_devs = pnp_isolation_protocol(parent); |
| 825 | if (num_pnp_devs) |
| 826 | break; |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | static device_method_t pnp_methods[] = { |
| 831 | /* Device interface */ |
| 832 | DEVMETHOD(device_identify, pnp_identify), |
| 833 | |
| 834 | { 0, 0 } |
| 835 | }; |
| 836 | |
| 837 | static driver_t pnp_driver = { |
| 838 | "pnp", |
| 839 | pnp_methods, |
| 840 | 1, /* no softc */ |
| 841 | }; |
| 842 | |
| 843 | static devclass_t pnp_devclass; |
| 844 | |
| 845 | DRIVER_MODULE(pnp, isa, pnp_driver, pnp_devclass, 0, 0); |