pnp.c revision 139271
1193323Sed/* 2193323Sed * Copyright (c) 1996, Sujal M. Patel 3193323Sed * All rights reserved. 4193323Sed * 5193323Sed * Redistribution and use in source and binary forms, with or without 6193323Sed * modification, are permitted provided that the following conditions 7193323Sed * are met: 8193323Sed * 1. Redistributions of source code must retain the above copyright 9193323Sed * notice, this list of conditions and the following disclaimer. 10193323Sed * 2. Redistributions in binary form must reproduce the above copyright 11193323Sed * notice, this list of conditions and the following disclaimer in the 12193323Sed * documentation and/or other materials provided with the distribution. 13193323Sed * 14193323Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193323Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16193323Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17193323Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18193323Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19193323Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20193323Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21193323Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22193323Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23193323Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24193323Sed * SUCH DAMAGE. 25193323Sed * 26193323Sed * from: pnp.c,v 1.11 1999/05/06 22:11:19 peter Exp 27193323Sed */ 28193323Sed 29193323Sed#include <sys/cdefs.h> 30195340Sed__FBSDID("$FreeBSD: head/sys/isa/pnp.c 139271 2004-12-24 22:18:19Z imp $"); 31193323Sed 32193323Sed#include <sys/param.h> 33193323Sed#include <sys/systm.h> 34193323Sed#include <sys/kernel.h> 35193323Sed#include <sys/module.h> 36193323Sed#include <sys/bus.h> 37198090Srdivacky#include <sys/malloc.h> 38193323Sed#include <isa/isavar.h> 39193323Sed#include <isa/pnpreg.h> 40193323Sed#include <isa/pnpvar.h> 41198090Srdivacky#include <machine/bus.h> 42193323Sed 43193323Sedtypedef struct _pnp_id { 44193323Sed uint32_t vendor_id; 45193323Sed uint32_t serial; 46193323Sed u_char checksum; 47193323Sed} pnp_id; 48193323Sed 49193323Sedstruct pnp_set_config_arg { 50193323Sed int csn; /* Card number to configure */ 51193323Sed int ldn; /* Logical device on card */ 52198090Srdivacky}; 53193323Sed 54193323Sedstruct pnp_quirk { 55193323Sed uint32_t vendor_id; /* Vendor of the card */ 56193323Sed uint32_t logical_id; /* ID of the device with quirk */ 57193323Sed int type; 58193323Sed#define PNP_QUIRK_WRITE_REG 1 /* Need to write a pnp register */ 59193323Sed#define PNP_QUIRK_EXTRA_IO 2 /* Has extra io ports */ 60193323Sed int arg1; 61193323Sed int arg2; 62193323Sed}; 63193323Sed 64193323Sedstruct pnp_quirk pnp_quirks[] = { 65193323Sed /* 66193323Sed * The Gravis UltraSound needs register 0xf2 to be set to 0xff 67193323Sed * to enable power. 68193323Sed * XXX need to know the logical device id. 69193323Sed */ 70193323Sed { 0x0100561e /* GRV0001 */, 0, 71193323Sed PNP_QUIRK_WRITE_REG, 0xf2, 0xff }, 72193323Sed /* 73193323Sed * An emu8000 does not give us other than the first 74193323Sed * port. 75193323Sed */ 76193323Sed { 0x26008c0e /* SB16 */, 0x21008c0e, 77201360Srdivacky PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 78201360Srdivacky { 0x42008c0e /* SB32(CTL0042) */, 0x21008c0e, 79201360Srdivacky PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 80201360Srdivacky { 0x44008c0e /* SB32(CTL0044) */, 0x21008c0e, 81193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 82193323Sed { 0x49008c0e /* SB32(CTL0049) */, 0x21008c0e, 83193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 84193323Sed { 0xf1008c0e /* SB32(CTL00f1) */, 0x21008c0e, 85193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 86193323Sed { 0xc1008c0e /* SB64(CTL00c1) */, 0x22008c0e, 87193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 88193323Sed { 0xc5008c0e /* SB64(CTL00c5) */, 0x22008c0e, 89193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 90193323Sed { 0xe4008c0e /* SB64(CTL00e4) */, 0x22008c0e, 91193323Sed PNP_QUIRK_EXTRA_IO, 0x400, 0x800 }, 92193323Sed 93193323Sed { 0 } 94193323Sed}; 95193323Sed 96193323Sed#ifdef PC98 97193323Sed/* Some NEC PnP cards have 9 bytes serial code. */ 98193323Sedstatic pnp_id necids[] = { 99193323Sed {0x4180a3b8, 0xffffffff, 0x00}, /* PC-9801CB-B04 (NEC8041) */ 100193323Sed {0x5181a3b8, 0xffffffff, 0x46}, /* PC-9821CB2-B04(NEC8151) */ 101193323Sed {0x5182a3b8, 0xffffffff, 0xb8}, /* PC-9801-XX (NEC8251) */ 102193323Sed {0x9181a3b8, 0xffffffff, 0x00}, /* PC-9801-120 (NEC8191) */ 103193323Sed {0, 0, 0} 104193323Sed}; 105193323Sed#endif 106193323Sed 107198892Srdivacky/* The READ_DATA port that we are using currently */ 108193323Sedstatic int pnp_rd_port; 109201360Srdivacky 110201360Srdivackystatic void pnp_send_initiation_key(void); 111201360Srdivackystatic int pnp_get_serial(pnp_id *p); 112201360Srdivackystatic int pnp_isolation_protocol(device_t parent); 113201360Srdivacky 114201360Srdivackychar * 115201360Srdivackypnp_eisaformat(uint32_t id) 116201360Srdivacky{ 117201360Srdivacky uint8_t *data = (uint8_t *) &id; 118193323Sed static char idbuf[8]; 119198892Srdivacky const char hextoascii[] = "0123456789abcdef"; 120198892Srdivacky 121201360Srdivacky idbuf[0] = '@' + ((data[0] & 0x7c) >> 2); 122201360Srdivacky idbuf[1] = '@' + (((data[0] & 0x3) << 3) + ((data[1] & 0xe0) >> 5)); 123198892Srdivacky idbuf[2] = '@' + (data[1] & 0x1f); 124193323Sed idbuf[3] = hextoascii[(data[2] >> 4)]; 125201360Srdivacky idbuf[4] = hextoascii[(data[2] & 0xf)]; 126201360Srdivacky idbuf[5] = hextoascii[(data[3] >> 4)]; 127201360Srdivacky idbuf[6] = hextoascii[(data[3] & 0xf)]; 128201360Srdivacky idbuf[7] = 0; 129201360Srdivacky return(idbuf); 130201360Srdivacky} 131201360Srdivacky 132198892Srdivackystatic void 133193323Sedpnp_write(int d, u_char r) 134198892Srdivacky{ 135193323Sed outb (_PNP_ADDRESS, d); 136198892Srdivacky outb (_PNP_WRITE_DATA, r); 137193323Sed} 138193323Sed 139193323Sed/* 140193323Sed * Send Initiation LFSR as described in "Plug and Play ISA Specification", 141193323Sed * Intel May 94. 142193323Sed */ 143193323Sedstatic void 144193323Sedpnp_send_initiation_key() 145193323Sed{ 146198892Srdivacky int cur, i; 147193323Sed 148193323Sed /* Reset the LSFR */ 149193323Sed outb(_PNP_ADDRESS, 0); 150193323Sed outb(_PNP_ADDRESS, 0); /* yes, we do need it twice! */ 151193323Sed 152193323Sed cur = 0x6a; 153193323Sed outb(_PNP_ADDRESS, cur); 154193323Sed 155193323Sed for (i = 1; i < 32; i++) { 156193323Sed cur = (cur >> 1) | (((cur ^ (cur >> 1)) << 7) & 0xff); 157193323Sed outb(_PNP_ADDRESS, cur); 158193323Sed } 159193323Sed} 160198090Srdivacky 161198090Srdivacky 162193323Sed/* 163198090Srdivacky * Get the device's serial number. Returns 1 if the serial is valid. 164198090Srdivacky */ 165198090Srdivackystatic int 166198090Srdivackypnp_get_serial(pnp_id *p) 167198090Srdivacky{ 168198090Srdivacky int i, bit, valid = 0, sum = 0x6a; 169198090Srdivacky u_char *data = (u_char *)p; 170193323Sed 171193323Sed bzero(data, sizeof(char) * 9); 172193323Sed outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION); 173193323Sed for (i = 0; i < 72; i++) { 174193323Sed bit = inb((pnp_rd_port << 2) | 0x3) == 0x55; 175193323Sed DELAY(250); /* Delay 250 usec */ 176193323Sed 177193323Sed /* Can't Short Circuit the next evaluation, so 'and' is last */ 178193323Sed bit = (inb((pnp_rd_port << 2) | 0x3) == 0xaa) && bit; 179193323Sed DELAY(250); /* Delay 250 usec */ 180193323Sed 181193323Sed valid = valid || bit; 182193323Sed if (i < 64) 183193323Sed sum = (sum >> 1) | 184193323Sed (((sum ^ (sum >> 1) ^ bit) << 7) & 0xff); 185193323Sed data[i / 8] = (data[i / 8] >> 1) | (bit ? 0x80 : 0); 186193323Sed } 187193323Sed 188193323Sed valid = valid && (data[8] == sum); 189193323Sed 190193323Sed return (valid); 191193323Sed} 192193323Sed 193193323Sed/* 194193323Sed * Fill's the buffer with resource info from the device. 195193323Sed * Returns the number of characters read. 196193323Sed */ 197193323Sedstatic int 198193323Sedpnp_get_resource_info(u_char *buffer, int len) 199193323Sed{ 200193323Sed int i, j, count; 201193323Sed u_char temp; 202193323Sed 203199989Srdivacky count = 0; 204193323Sed for (i = 0; i < len; i++) { 205193323Sed outb(_PNP_ADDRESS, PNP_STATUS); 206193323Sed for (j = 0; j < 100; j++) { 207193323Sed if ((inb((pnp_rd_port << 2) | 0x3)) & 0x1) 208193323Sed break; 209193323Sed DELAY(1); 210193323Sed } 211193323Sed if (j == 100) { 212193323Sed printf("PnP device failed to report resource data\n"); 213193323Sed return (count); 214193323Sed } 215193323Sed outb(_PNP_ADDRESS, PNP_RESOURCE_DATA); 216193323Sed temp = inb((pnp_rd_port << 2) | 0x3); 217193323Sed if (buffer != NULL) 218193323Sed buffer[i] = temp; 219193323Sed count++; 220193323Sed } 221193323Sed return (count); 222193323Sed} 223193323Sed 224198892Srdivacky/* 225193323Sed * This function is called after the bus has assigned resource 226193323Sed * locations for a logical device. 227193323Sed */ 228193323Sedstatic void 229198892Srdivackypnp_set_config(void *arg, struct isa_config *config, int enable) 230193323Sed{ 231193323Sed int csn = ((struct pnp_set_config_arg *) arg)->csn; 232193323Sed int ldn = ((struct pnp_set_config_arg *) arg)->ldn; 233193323Sed int i; 234193323Sed 235198892Srdivacky /* 236193323Sed * First put all cards into Sleep state with the initiation 237193323Sed * key, then put our card into Config state. 238193323Sed */ 239193323Sed pnp_send_initiation_key(); 240193323Sed pnp_write(PNP_WAKE, csn); 241193323Sed 242193323Sed /* 243193323Sed * Select our logical device so that we can program it. 244193323Sed */ 245193323Sed pnp_write(PNP_SET_LDN, ldn); 246193323Sed 247193323Sed /* 248193323Sed * Constrain the number of resources we will try to program 249193323Sed */ 250193323Sed if (config->ic_nmem > ISA_PNP_NMEM) { 251193323Sed printf("too many ISA memory ranges (%d > %d)\n", 252193323Sed config->ic_nmem, ISA_PNP_NMEM); 253193323Sed config->ic_nmem = ISA_PNP_NMEM; 254193323Sed } 255202375Srdivacky if (config->ic_nport > ISA_PNP_NPORT) { 256202375Srdivacky printf("too many ISA I/O ranges (%d > %d)\n", config->ic_nport, 257193323Sed ISA_PNP_NPORT); 258198090Srdivacky config->ic_nport = ISA_PNP_NPORT; 259193323Sed } 260193323Sed if (config->ic_nirq > ISA_PNP_NIRQ) { 261193323Sed printf("too many ISA IRQs (%d > %d)\n", config->ic_nirq, 262193323Sed ISA_PNP_NIRQ); 263193323Sed config->ic_nirq = ISA_PNP_NIRQ; 264193323Sed } 265193323Sed if (config->ic_ndrq > ISA_PNP_NDRQ) { 266193323Sed printf("too many ISA DRQs (%d > %d)\n", config->ic_ndrq, 267193323Sed ISA_PNP_NDRQ); 268193323Sed config->ic_ndrq = ISA_PNP_NDRQ; 269193323Sed } 270193323Sed 271193323Sed /* 272198090Srdivacky * Now program the resources. 273198090Srdivacky */ 274198090Srdivacky for (i = 0; i < config->ic_nmem; i++) { 275193323Sed uint32_t start; 276193323Sed uint32_t size; 277198090Srdivacky 278193323Sed /* XXX: should handle memory control register, 32 bit memory */ 279193323Sed if (config->ic_mem[i].ir_size == 0) { 280193323Sed pnp_write(PNP_MEM_BASE_HIGH(i), 0); 281193323Sed pnp_write(PNP_MEM_BASE_LOW(i), 0); 282193323Sed pnp_write(PNP_MEM_RANGE_HIGH(i), 0); 283193323Sed pnp_write(PNP_MEM_RANGE_LOW(i), 0); 284193323Sed } else { 285198090Srdivacky start = config->ic_mem[i].ir_start; 286193323Sed size = config->ic_mem[i].ir_size; 287193323Sed if (start & 0xff) 288193323Sed panic("pnp_set_config: bogus memory assignment"); 289193323Sed pnp_write(PNP_MEM_BASE_HIGH(i), (start >> 16) & 0xff); 290193323Sed pnp_write(PNP_MEM_BASE_LOW(i), (start >> 8) & 0xff); 291193323Sed pnp_write(PNP_MEM_RANGE_HIGH(i), (size >> 16) & 0xff); 292193323Sed pnp_write(PNP_MEM_RANGE_LOW(i), (size >> 8) & 0xff); 293193323Sed } 294193323Sed } 295193323Sed for (; i < ISA_PNP_NMEM; i++) { 296193323Sed pnp_write(PNP_MEM_BASE_HIGH(i), 0); 297193323Sed pnp_write(PNP_MEM_BASE_LOW(i), 0); 298193323Sed pnp_write(PNP_MEM_RANGE_HIGH(i), 0); 299193323Sed pnp_write(PNP_MEM_RANGE_LOW(i), 0); 300193323Sed } 301193323Sed 302193323Sed for (i = 0; i < config->ic_nport; i++) { 303193323Sed uint32_t start; 304193323Sed 305193323Sed if (config->ic_port[i].ir_size == 0) { 306193323Sed pnp_write(PNP_IO_BASE_HIGH(i), 0); 307193323Sed pnp_write(PNP_IO_BASE_LOW(i), 0); 308193323Sed } else { 309193323Sed start = config->ic_port[i].ir_start; 310193323Sed pnp_write(PNP_IO_BASE_HIGH(i), (start >> 8) & 0xff); 311193323Sed pnp_write(PNP_IO_BASE_LOW(i), (start >> 0) & 0xff); 312193323Sed } 313193323Sed } 314193323Sed for (; i < ISA_PNP_NPORT; i++) { 315193323Sed pnp_write(PNP_IO_BASE_HIGH(i), 0); 316193323Sed pnp_write(PNP_IO_BASE_LOW(i), 0); 317202375Srdivacky } 318198090Srdivacky 319193323Sed for (i = 0; i < config->ic_nirq; i++) { 320193323Sed int irq; 321198090Srdivacky 322193323Sed /* XXX: interrupt type */ 323193323Sed if (config->ic_irqmask[i] == 0) { 324202375Srdivacky pnp_write(PNP_IRQ_LEVEL(i), 0); 325193323Sed pnp_write(PNP_IRQ_TYPE(i), 2); 326193323Sed } else { 327198090Srdivacky irq = ffs(config->ic_irqmask[i]) - 1; 328193323Sed pnp_write(PNP_IRQ_LEVEL(i), irq); 329193323Sed pnp_write(PNP_IRQ_TYPE(i), 2); /* XXX */ 330193323Sed } 331193323Sed } 332193323Sed for (; i < ISA_PNP_NIRQ; i++) { 333193323Sed /* 334193323Sed * IRQ 0 is not a valid interrupt selection and 335193323Sed * represents no interrupt selection. 336193323Sed */ 337193323Sed pnp_write(PNP_IRQ_LEVEL(i), 0); 338193323Sed pnp_write(PNP_IRQ_TYPE(i), 2); 339193323Sed } 340193323Sed 341193323Sed for (i = 0; i < config->ic_ndrq; i++) { 342193323Sed int drq; 343193323Sed 344193323Sed if (config->ic_drqmask[i] == 0) { 345193323Sed pnp_write(PNP_DMA_CHANNEL(i), 4); 346198892Srdivacky } else { 347198892Srdivacky drq = ffs(config->ic_drqmask[i]) - 1; 348202375Srdivacky pnp_write(PNP_DMA_CHANNEL(i), drq); 349193323Sed } 350193323Sed } 351193323Sed for (; i < ISA_PNP_NDRQ; i++) { 352193323Sed /* 353193323Sed * DMA channel 4, the cascade channel is used to 354193323Sed * indicate no DMA channel is active. 355198090Srdivacky */ 356193323Sed pnp_write(PNP_DMA_CHANNEL(i), 4); 357193323Sed } 358193323Sed 359193323Sed pnp_write(PNP_ACTIVATE, enable ? 1 : 0); 360193323Sed 361193323Sed /* 362193323Sed * Wake everyone up again, we are finished. 363193323Sed */ 364193323Sed pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY); 365198090Srdivacky} 366193323Sed 367193323Sed/* 368193323Sed * Process quirks for a logical device.. The card must be in Config state. 369193323Sed */ 370193323Sedvoid 371201360Srdivackypnp_check_quirks(uint32_t vendor_id, uint32_t logical_id, int ldn, 372201360Srdivacky struct isa_config *config) 373201360Srdivacky{ 374193323Sed struct pnp_quirk *qp; 375201360Srdivacky 376201360Srdivacky for (qp = &pnp_quirks[0]; qp->vendor_id; qp++) { 377201360Srdivacky if (qp->vendor_id == vendor_id 378193323Sed && (qp->logical_id == 0 || qp->logical_id == logical_id)) { 379201360Srdivacky switch (qp->type) { 380201360Srdivacky case PNP_QUIRK_WRITE_REG: 381193323Sed pnp_write(PNP_SET_LDN, ldn); 382201360Srdivacky pnp_write(qp->arg1, qp->arg2); 383201360Srdivacky break; 384201360Srdivacky case PNP_QUIRK_EXTRA_IO: 385201360Srdivacky if (config == NULL) 386201360Srdivacky break; 387193323Sed if (qp->arg1 != 0) { 388201360Srdivacky config->ic_nport++; 389201360Srdivacky config->ic_port[config->ic_nport - 1] = config->ic_port[0]; 390201360Srdivacky config->ic_port[config->ic_nport - 1].ir_start += qp->arg1; 391201360Srdivacky config->ic_port[config->ic_nport - 1].ir_end += qp->arg1; 392201360Srdivacky } 393201360Srdivacky if (qp->arg2 != 0) { 394201360Srdivacky config->ic_nport++; 395201360Srdivacky config->ic_port[config->ic_nport - 1] = config->ic_port[0]; 396201360Srdivacky config->ic_port[config->ic_nport - 1].ir_start += qp->arg2; 397201360Srdivacky config->ic_port[config->ic_nport - 1].ir_end += qp->arg2; 398201360Srdivacky } 399193323Sed break; 400193323Sed } 401201360Srdivacky } 402201360Srdivacky } 403201360Srdivacky} 404201360Srdivacky 405201360Srdivacky/* 406201360Srdivacky * Scan Resource Data for Logical Devices. 407201360Srdivacky * 408201360Srdivacky * This function exits as soon as it gets an error reading *ANY* 409201360Srdivacky * Resource Data or it reaches the end of Resource Data. In the first 410193323Sed * case the return value will be TRUE, FALSE otherwise. 411201360Srdivacky */ 412201360Srdivackystatic int 413201360Srdivackypnp_create_devices(device_t parent, pnp_id *p, int csn, 414201360Srdivacky u_char *resources, int len) 415201360Srdivacky{ 416201360Srdivacky u_char tag, *resp, *resinfo, *startres = 0; 417201360Srdivacky int large_len, scanning = len, retval = FALSE; 418201360Srdivacky uint32_t logical_id; 419201360Srdivacky device_t dev = 0; 420201360Srdivacky int ldn = 0; 421201360Srdivacky struct pnp_set_config_arg *csnldn; 422201360Srdivacky char buf[100]; 423201360Srdivacky char *desc = 0; 424201360Srdivacky 425201360Srdivacky resp = resources; 426201360Srdivacky while (scanning > 0) { 427201360Srdivacky tag = *resp++; 428201360Srdivacky scanning--; 429201360Srdivacky if (PNP_RES_TYPE(tag) != 0) { 430201360Srdivacky /* Large resource */ 431201360Srdivacky if (scanning < 2) { 432201360Srdivacky scanning = 0; 433193323Sed continue; 434201360Srdivacky } 435201360Srdivacky large_len = resp[0] + (resp[1] << 8); 436201360Srdivacky resp += 2; 437201360Srdivacky 438201360Srdivacky if (scanning < large_len) { 439201360Srdivacky scanning = 0; 440201360Srdivacky continue; 441201360Srdivacky } 442201360Srdivacky resinfo = resp; 443201360Srdivacky resp += large_len; 444201360Srdivacky scanning -= large_len; 445201360Srdivacky 446193323Sed if (PNP_LRES_NUM(tag) == PNP_TAG_ID_ANSI) { 447201360Srdivacky if (dev) { 448201360Srdivacky /* 449198090Srdivacky * This is an optional device 450201360Srdivacky * indentifier string. Skipt it 451193323Sed * for now. 452201360Srdivacky */ 453193323Sed continue; 454193323Sed } 455193323Sed /* else mandately card identifier string */ 456201360Srdivacky if (large_len > sizeof(buf) - 1) 457201360Srdivacky large_len = sizeof(buf) - 1; 458201360Srdivacky bcopy(resinfo, buf, large_len); 459201360Srdivacky 460201360Srdivacky /* 461201360Srdivacky * Trim trailing spaces. 462201360Srdivacky */ 463201360Srdivacky while (buf[large_len-1] == ' ') 464201360Srdivacky large_len--; 465201360Srdivacky buf[large_len] = '\0'; 466193323Sed desc = buf; 467201360Srdivacky continue; 468201360Srdivacky } 469201360Srdivacky 470201360Srdivacky continue; 471201360Srdivacky } 472201360Srdivacky 473193323Sed /* Small resource */ 474201360Srdivacky if (scanning < PNP_SRES_LEN(tag)) { 475201360Srdivacky scanning = 0; 476201360Srdivacky continue; 477193323Sed } 478193323Sed resinfo = resp; 479201360Srdivacky resp += PNP_SRES_LEN(tag); 480201360Srdivacky scanning -= PNP_SRES_LEN(tag);; 481201360Srdivacky 482201360Srdivacky switch (PNP_SRES_NUM(tag)) { 483201360Srdivacky case PNP_TAG_LOGICAL_DEVICE: 484201360Srdivacky /* 485201360Srdivacky * Parse the resources for the previous 486201360Srdivacky * logical device (if any). 487193323Sed */ 488201360Srdivacky if (startres) { 489201360Srdivacky pnp_parse_resources(dev, startres, 490201360Srdivacky resinfo - startres - 1, ldn); 491201360Srdivacky dev = 0; 492201360Srdivacky startres = 0; 493201360Srdivacky } 494201360Srdivacky 495201360Srdivacky /* 496201360Srdivacky * A new logical device. Scan for end of 497201360Srdivacky * resources. 498201360Srdivacky */ 499201360Srdivacky bcopy(resinfo, &logical_id, 4); 500201360Srdivacky pnp_check_quirks(p->vendor_id, logical_id, ldn, NULL); 501201360Srdivacky dev = BUS_ADD_CHILD(parent, ISA_ORDER_PNP, NULL, -1); 502201360Srdivacky if (desc) 503201360Srdivacky device_set_desc_copy(dev, desc); 504201360Srdivacky else 505201360Srdivacky device_set_desc_copy(dev, 506201360Srdivacky pnp_eisaformat(logical_id)); 507201360Srdivacky isa_set_vendorid(dev, p->vendor_id); 508193323Sed isa_set_serial(dev, p->serial); 509201360Srdivacky isa_set_logicalid(dev, logical_id); 510193323Sed isa_set_configattr(dev, 511193323Sed ISACFGATTR_CANDISABLE | ISACFGATTR_DYNAMIC); 512201360Srdivacky csnldn = malloc(sizeof *csnldn, M_DEVBUF, M_NOWAIT); 513201360Srdivacky if (!csnldn) { 514201360Srdivacky device_printf(parent, "out of memory\n"); 515201360Srdivacky scanning = 0; 516193323Sed break; 517201360Srdivacky } 518193323Sed csnldn->csn = csn; 519193323Sed csnldn->ldn = ldn; 520201360Srdivacky ISA_SET_CONFIG_CALLBACK(parent, dev, pnp_set_config, 521201360Srdivacky csnldn); 522201360Srdivacky ldn++; 523201360Srdivacky startres = resp; 524201360Srdivacky break; 525201360Srdivacky 526201360Srdivacky case PNP_TAG_END: 527201360Srdivacky if (!startres) { 528201360Srdivacky device_printf(parent, "malformed resources\n"); 529201360Srdivacky scanning = 0; 530201360Srdivacky break; 531201360Srdivacky } 532201360Srdivacky pnp_parse_resources(dev, startres, 533201360Srdivacky resinfo - startres - 1, ldn); 534201360Srdivacky dev = 0; 535201360Srdivacky startres = 0; 536201360Srdivacky scanning = 0; 537201360Srdivacky break; 538201360Srdivacky 539193323Sed default: 540201360Srdivacky /* Skip this resource */ 541201360Srdivacky break; 542201360Srdivacky } 543201360Srdivacky } 544201360Srdivacky 545201360Srdivacky return (retval); 546193323Sed} 547193323Sed 548201360Srdivacky/* 549201360Srdivacky * Read 'amount' bytes of resources from the card, allocating memory 550201360Srdivacky * as needed. If a buffer is already available, it should be passed in 551201360Srdivacky * '*resourcesp' and its length in '*spacep'. The number of resource 552201360Srdivacky * bytes already in the buffer should be passed in '*lenp'. The memory 553201360Srdivacky * allocated will be returned in '*resourcesp' with its size and the 554201360Srdivacky * number of bytes of resources in '*spacep' and '*lenp' respectively. 555201360Srdivacky * 556193323Sed * XXX: Multiple problems here, we forget to free() stuff in one 557201360Srdivacky * XXX: error return, and in another case we free (*resourcesp) but 558201360Srdivacky * XXX: don't tell the caller. 559201360Srdivacky */ 560201360Srdivackystatic int 561201360Srdivackypnp_read_bytes(int amount, u_char **resourcesp, int *spacep, int *lenp) 562201360Srdivacky{ 563201360Srdivacky u_char *resources = *resourcesp; 564201360Srdivacky u_char *newres; 565201360Srdivacky int space = *spacep; 566201360Srdivacky int len = *lenp; 567201360Srdivacky 568201360Srdivacky if (space == 0) { 569201360Srdivacky space = 1024; 570201360Srdivacky resources = malloc(space, M_TEMP, M_NOWAIT); 571201360Srdivacky if (!resources) 572201360Srdivacky return (ENOMEM); 573201360Srdivacky } 574201360Srdivacky 575201360Srdivacky if (len + amount > space) { 576201360Srdivacky int extra = 1024; 577201360Srdivacky while (len + amount > space + extra) 578201360Srdivacky extra += 1024; 579201360Srdivacky newres = malloc(space + extra, M_TEMP, M_NOWAIT); 580201360Srdivacky if (!newres) { 581201360Srdivacky /* XXX: free resources */ 582201360Srdivacky return (ENOMEM); 583201360Srdivacky } 584201360Srdivacky bcopy(resources, newres, len); 585201360Srdivacky free(resources, M_TEMP); 586201360Srdivacky resources = newres; 587201360Srdivacky space += extra; 588201360Srdivacky } 589201360Srdivacky 590201360Srdivacky if (pnp_get_resource_info(resources + len, amount) != amount) 591201360Srdivacky return (EINVAL); 592193323Sed len += amount; 593201360Srdivacky 594201360Srdivacky *resourcesp = resources; 595201360Srdivacky *spacep = space; 596201360Srdivacky *lenp = len; 597201360Srdivacky 598201360Srdivacky return (0); 599201360Srdivacky} 600201360Srdivacky 601201360Srdivacky/* 602201360Srdivacky * Read all resources from the card, allocating memory as needed. If a 603201360Srdivacky * buffer is already available, it should be passed in '*resourcesp' 604201360Srdivacky * and its length in '*spacep'. The memory allocated will be returned 605201360Srdivacky * in '*resourcesp' with its size and the number of bytes of resources 606201360Srdivacky * in '*spacep' and '*lenp' respectively. 607201360Srdivacky */ 608201360Srdivackystatic int 609201360Srdivackypnp_read_resources(u_char **resourcesp, int *spacep, int *lenp) 610201360Srdivacky{ 611201360Srdivacky u_char *resources = *resourcesp; 612201360Srdivacky int space = *spacep; 613201360Srdivacky int len = 0; 614201360Srdivacky int error, done; 615193323Sed u_char tag; 616193323Sed 617193323Sed error = 0; 618193323Sed done = 0; 619193323Sed while (!done) { 620201360Srdivacky error = pnp_read_bytes(1, &resources, &space, &len); 621201360Srdivacky if (error) 622201360Srdivacky goto out; 623201360Srdivacky tag = resources[len-1]; 624201360Srdivacky if (PNP_RES_TYPE(tag) == 0) { 625201360Srdivacky /* 626201360Srdivacky * Small resource, read contents. 627193323Sed */ 628201360Srdivacky error = pnp_read_bytes(PNP_SRES_LEN(tag), 629201360Srdivacky &resources, &space, &len); 630201360Srdivacky if (error) 631201360Srdivacky goto out; 632201360Srdivacky if (PNP_SRES_NUM(tag) == PNP_TAG_END) 633201360Srdivacky done = 1; 634201360Srdivacky } else { 635201360Srdivacky /* 636201360Srdivacky * Large resource, read length and contents. 637201360Srdivacky */ 638193323Sed error = pnp_read_bytes(2, &resources, &space, &len); 639201360Srdivacky if (error) 640201360Srdivacky goto out; 641201360Srdivacky error = pnp_read_bytes(resources[len-2] 642201360Srdivacky + (resources[len-1] << 8), &resources, &space, 643201360Srdivacky &len); 644201360Srdivacky if (error) 645201360Srdivacky goto out; 646201360Srdivacky } 647201360Srdivacky } 648201360Srdivacky 649201360Srdivacky out: 650201360Srdivacky *resourcesp = resources; 651201360Srdivacky *spacep = space; 652201360Srdivacky *lenp = len; 653201360Srdivacky return (error); 654193323Sed} 655201360Srdivacky 656201360Srdivacky/* 657201360Srdivacky * Run the isolation protocol. Use pnp_rd_port as the READ_DATA port 658201360Srdivacky * value (caller should try multiple READ_DATA locations before giving 659201360Srdivacky * up). Upon exiting, all cards are aware that they should use 660201360Srdivacky * pnp_rd_port as the READ_DATA port. 661201360Srdivacky * 662193323Sed * In the first pass, a csn is assigned to each board and pnp_id's 663193323Sed * are saved to an array, pnp_devices. In the second pass, each 664201360Srdivacky * card is woken up and the device configuration is called. 665201360Srdivacky */ 666201360Srdivackystatic int 667201360Srdivackypnp_isolation_protocol(device_t parent) 668201360Srdivacky{ 669201360Srdivacky int csn; 670201360Srdivacky pnp_id id; 671201360Srdivacky int found = 0, len; 672201360Srdivacky u_char *resources = 0; 673201360Srdivacky int space = 0; 674201360Srdivacky int error; 675201360Srdivacky#ifdef PC98 676201360Srdivacky int n, necpnp; 677201360Srdivacky u_char buffer[10]; 678201360Srdivacky#endif 679201360Srdivacky 680201360Srdivacky /* 681201360Srdivacky * Put all cards into the Sleep state so that we can clear 682201360Srdivacky * their CSNs. 683201360Srdivacky */ 684201360Srdivacky pnp_send_initiation_key(); 685201360Srdivacky 686201360Srdivacky /* 687201360Srdivacky * Clear the CSN for all cards. 688201360Srdivacky */ 689201360Srdivacky pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_RESET_CSN); 690201360Srdivacky 691201360Srdivacky /* 692201360Srdivacky * Move all cards to the Isolation state. 693201360Srdivacky */ 694201360Srdivacky pnp_write(PNP_WAKE, 0); 695201360Srdivacky 696201360Srdivacky /* 697201360Srdivacky * Tell them where the read point is going to be this time. 698201360Srdivacky */ 699201360Srdivacky pnp_write(PNP_SET_RD_DATA, pnp_rd_port); 700201360Srdivacky 701201360Srdivacky for (csn = 1; csn < PNP_MAX_CARDS; csn++) { 702201360Srdivacky /* 703201360Srdivacky * Start the serial isolation protocol. 704201360Srdivacky */ 705201360Srdivacky outb(_PNP_ADDRESS, PNP_SERIAL_ISOLATION); 706201360Srdivacky DELAY(1000); /* Delay 1 msec */ 707201360Srdivacky 708201360Srdivacky if (pnp_get_serial(&id)) { 709201360Srdivacky /* 710193323Sed * We have read the id from a card 711193323Sed * successfully. The card which won the 712201360Srdivacky * isolation protocol will be in Isolation 713198892Srdivacky * mode and all others will be in Sleep. 714193323Sed * Program the CSN of the isolated card 715193323Sed * (taking it to Config state) and read its 716193323Sed * resources, creating devices as we find 717193323Sed * logical devices on the card. 718193323Sed */ 719193323Sed pnp_write(PNP_SET_CSN, csn); 720198090Srdivacky#ifdef PC98 721193323Sed if (bootverbose) 722193323Sed printf("PnP Vendor ID = %x\n", id.vendor_id); 723201360Srdivacky /* Check for NEC PnP (9 bytes serial). */ 724193323Sed for (n = necpnp = 0; necids[n].vendor_id; n++) { 725193323Sed if (id.vendor_id == necids[n].vendor_id) { 726201360Srdivacky necpnp = 1; 727193323Sed break; 728193323Sed } 729193323Sed } 730200581Srdivacky if (necpnp) { 731193323Sed if (bootverbose) 732193323Sed printf("An NEC-PnP card (%s).\n", 733193323Sed pnp_eisaformat(id.vendor_id)); 734201360Srdivacky /* Read dummy 9 bytes serial area. */ 735201360Srdivacky pnp_get_resource_info(buffer, 9); 736201360Srdivacky } else { 737201360Srdivacky if (bootverbose) 738201360Srdivacky printf("A Normal-ISA-PnP card (%s).\n", 739201360Srdivacky pnp_eisaformat(id.vendor_id)); 740201360Srdivacky } 741201360Srdivacky if (bootverbose) 742201360Srdivacky printf("Reading PnP configuration for %s.\n", 743201360Srdivacky pnp_eisaformat(id.vendor_id)); 744201360Srdivacky#endif 745201360Srdivacky error = pnp_read_resources(&resources, &space, &len); 746201360Srdivacky if (error) 747201360Srdivacky break; 748201360Srdivacky pnp_create_devices(parent, &id, csn, resources, len); 749201360Srdivacky found++; 750201360Srdivacky } else 751201360Srdivacky break; 752201360Srdivacky 753201360Srdivacky /* 754201360Srdivacky * Put this card back to the Sleep state and 755201360Srdivacky * simultaneously move all cards which don't have a 756201360Srdivacky * CSN yet to Isolation state. 757201360Srdivacky */ 758193323Sed pnp_write(PNP_WAKE, 0); 759193323Sed } 760193323Sed 761193323Sed /* 762193323Sed * Unless we have chosen the wrong read port, all cards will 763193323Sed * be in Sleep state. Put them back into WaitForKey for 764193323Sed * now. Their resources will be programmed later. 765193323Sed */ 766193323Sed pnp_write(PNP_CONFIG_CONTROL, PNP_CONFIG_CONTROL_WAIT_FOR_KEY); 767193323Sed 768193323Sed /* 769193323Sed * Cleanup. 770193323Sed */ 771193323Sed if (resources) 772193323Sed free(resources, M_TEMP); 773201360Srdivacky 774193323Sed return (found); 775198090Srdivacky} 776193323Sed 777193323Sed 778193323Sed/* 779193323Sed * pnp_identify() 780193323Sed * 781193323Sed * autoconfiguration of pnp devices. This routine just runs the 782201360Srdivacky * isolation protocol over several ports, until one is successful. 783201360Srdivacky * 784201360Srdivacky * may be called more than once ? 785201360Srdivacky * 786198090Srdivacky */ 787198090Srdivacky 788201360Srdivackystatic void 789198090Srdivackypnp_identify(driver_t *driver, device_t parent) 790201360Srdivacky{ 791193323Sed int num_pnp_devs; 792193323Sed 793193323Sed /* Try various READ_DATA ports from 0x203-0x3ff */ 794193323Sed for (pnp_rd_port = 0x80; (pnp_rd_port < 0xff); pnp_rd_port += 0x10) { 795193323Sed if (bootverbose) 796193323Sed printf("pnp_identify: Trying Read_Port at %x\n", 797193323Sed (pnp_rd_port << 2) | 0x3); 798193323Sed 799193323Sed num_pnp_devs = pnp_isolation_protocol(parent); 800193323Sed if (num_pnp_devs) 801193323Sed break; 802193323Sed } 803193323Sed if (bootverbose) 804193323Sed printf("PNP Identify complete\n"); 805193323Sed} 806193323Sed 807193323Sedstatic device_method_t pnp_methods[] = { 808193323Sed /* Device interface */ 809193323Sed DEVMETHOD(device_identify, pnp_identify), 810193323Sed 811193323Sed { 0, 0 } 812193323Sed}; 813193323Sed 814193323Sedstatic driver_t pnp_driver = { 815193323Sed "pnp", 816193323Sed pnp_methods, 817193323Sed 1, /* no softc */ 818193323Sed}; 819193323Sed 820193323Sedstatic devclass_t pnp_devclass; 821193323Sed 822193323SedDRIVER_MODULE(pnp, isa, pnp_driver, pnp_devclass, 0, 0); 823193323Sed