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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 | /* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $ * * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version). * * Author Fritz Elfert * Copyright by Fritz Elfert <fritz@isdn4linux.de> * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * * Thanks to Friedemann Baitinger and IBM Germany * */ #include "act2000.h" #include "act2000_isa.h" #include "capi.h" static act2000_card *irq2card_map[16]; static void act2000_isa_delay(long t) { sti(); set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(t); sti(); } /* * Reset Controller, then try to read the Card's signature. + Return: * 1 = Signature found. * 0 = Signature not found. */ static int act2000_isa_reset(unsigned short portbase) { unsigned char reg; int i; int found; int serial = 0; found = 0; if ((reg = inb(portbase + ISA_COR)) != 0xff) { outb(reg | ISA_COR_RESET, portbase + ISA_COR); mdelay(10); outb(reg, portbase + ISA_COR); mdelay(10); for (i = 0; i < 16; i++) { if (inb(portbase + ISA_ISR) & ISA_ISR_SERIAL) serial |= 0x10000; serial >>= 1; } if (serial == ISA_SER_ID) found++; } return found; } int act2000_isa_detect(unsigned short portbase) { int ret = 0; if (!check_region(portbase, ISA_REGION)) ret = act2000_isa_reset(portbase); return ret; } static irqreturn_t act2000_isa_interrupt(int irq, void *dev_id, struct pt_regs *regs) { act2000_card *card = irq2card_map[irq]; u_char istatus; if (!card) { printk(KERN_WARNING "act2000: Spurious interrupt!\n"); return IRQ_NONE; } istatus = (inb(ISA_PORT_ISR) & 0x07); if (istatus & ISA_ISR_OUT) { /* RX fifo has data */ istatus &= ISA_ISR_OUT_MASK; outb(0, ISA_PORT_SIS); act2000_isa_receive(card); outb(ISA_SIS_INT, ISA_PORT_SIS); } if (istatus & ISA_ISR_ERR) { /* Error Interrupt */ istatus &= ISA_ISR_ERR_MASK; printk(KERN_WARNING "act2000: errIRQ\n"); } if (istatus) printk(KERN_DEBUG "act2000: ?IRQ %d %02x\n", irq, istatus); return IRQ_HANDLED; } static void act2000_isa_select_irq(act2000_card * card) { unsigned char reg; reg = (inb(ISA_PORT_COR) & ~ISA_COR_IRQOFF) | ISA_COR_PERR; switch (card->irq) { case 3: reg = ISA_COR_IRQ03; break; case 5: reg = ISA_COR_IRQ05; break; case 7: reg = ISA_COR_IRQ07; break; case 10: reg = ISA_COR_IRQ10; break; case 11: reg = ISA_COR_IRQ11; break; case 12: reg = ISA_COR_IRQ12; break; case 15: reg = ISA_COR_IRQ15; break; } outb(reg, ISA_PORT_COR); } static void act2000_isa_enable_irq(act2000_card * card) { act2000_isa_select_irq(card); /* Enable READ irq */ outb(ISA_SIS_INT, ISA_PORT_SIS); } /* * Install interrupt handler, enable irq on card. * If irq is -1, choose next free irq, else irq is given explicitely. */ int act2000_isa_config_irq(act2000_card * card, short irq) { if (card->flags & ACT2000_FLAGS_IVALID) { free_irq(card->irq, NULL); irq2card_map[card->irq] = NULL; } card->flags &= ~ACT2000_FLAGS_IVALID; outb(ISA_COR_IRQOFF, ISA_PORT_COR); if (!irq) return 0; if (!request_irq(irq, &act2000_isa_interrupt, 0, card->regname, NULL)) { card->irq = irq; irq2card_map[card->irq] = card; card->flags |= ACT2000_FLAGS_IVALID; printk(KERN_WARNING "act2000: Could not request irq %d\n",irq); return -EBUSY; } else { act2000_isa_select_irq(card); /* Disable READ and WRITE irq */ outb(0, ISA_PORT_SIS); outb(0, ISA_PORT_SOS); } return 0; } int act2000_isa_config_port(act2000_card * card, unsigned short portbase) { if (card->flags & ACT2000_FLAGS_PVALID) { release_region(card->port, ISA_REGION); card->flags &= ~ACT2000_FLAGS_PVALID; } if (!check_region(portbase, ISA_REGION)) { if (request_region(portbase, ACT2000_PORTLEN, card->regname) == NULL) return -EIO; card->port = portbase; card->flags |= ACT2000_FLAGS_PVALID; return 0; } return -EBUSY; } /* * Release ressources, used by an adaptor. */ void act2000_isa_release(act2000_card * card) { unsigned long flags; save_flags(flags); cli(); if (card->flags & ACT2000_FLAGS_IVALID) { free_irq(card->irq, NULL); irq2card_map[card->irq] = NULL; } card->flags &= ~ACT2000_FLAGS_IVALID; if (card->flags & ACT2000_FLAGS_PVALID) release_region(card->port, ISA_REGION); card->flags &= ~ACT2000_FLAGS_PVALID; restore_flags(flags); } static int act2000_isa_writeb(act2000_card * card, u_char data) { u_char timeout = 40; while (timeout) { if (inb(ISA_PORT_SOS) & ISA_SOS_READY) { outb(data, ISA_PORT_SDO); return 0; } else { timeout--; udelay(10); } } return 1; } static int act2000_isa_readb(act2000_card * card, u_char * data) { u_char timeout = 40; while (timeout) { if (inb(ISA_PORT_SIS) & ISA_SIS_READY) { *data = inb(ISA_PORT_SDI); return 0; } else { timeout--; udelay(10); } } return 1; } void act2000_isa_receive(act2000_card *card) { u_char c; if (test_and_set_bit(ACT2000_LOCK_RX, (void *) &card->ilock) != 0) return; while (!act2000_isa_readb(card, &c)) { if (card->idat.isa.rcvidx < 8) { card->idat.isa.rcvhdr[card->idat.isa.rcvidx++] = c; if (card->idat.isa.rcvidx == 8) { int valid = actcapi_chkhdr(card, (actcapi_msghdr *)&card->idat.isa.rcvhdr); if (valid) { card->idat.isa.rcvlen = ((actcapi_msghdr *)&card->idat.isa.rcvhdr)->len; card->idat.isa.rcvskb = dev_alloc_skb(card->idat.isa.rcvlen); if (card->idat.isa.rcvskb == NULL) { card->idat.isa.rcvignore = 1; printk(KERN_WARNING "act2000_isa_receive: no memory\n"); test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock); return; } memcpy(skb_put(card->idat.isa.rcvskb, 8), card->idat.isa.rcvhdr, 8); card->idat.isa.rcvptr = skb_put(card->idat.isa.rcvskb, card->idat.isa.rcvlen - 8); } else { card->idat.isa.rcvidx = 0; printk(KERN_WARNING "act2000_isa_receive: Invalid CAPI msg\n"); { int i; __u8 *p; __u8 *c; __u8 tmp[30]; for (i = 0, p = (__u8 *)&card->idat.isa.rcvhdr, c = tmp; i < 8; i++) c += sprintf(c, "%02x ", *(p++)); printk(KERN_WARNING "act2000_isa_receive: %s\n", tmp); } } } } else { if (!card->idat.isa.rcvignore) *card->idat.isa.rcvptr++ = c; if (++card->idat.isa.rcvidx >= card->idat.isa.rcvlen) { if (!card->idat.isa.rcvignore) { skb_queue_tail(&card->rcvq, card->idat.isa.rcvskb); act2000_schedule_rx(card); } card->idat.isa.rcvidx = 0; card->idat.isa.rcvlen = 8; card->idat.isa.rcvignore = 0; card->idat.isa.rcvskb = NULL; card->idat.isa.rcvptr = card->idat.isa.rcvhdr; } } } if (!(card->flags & ACT2000_FLAGS_IVALID)) { /* In polling mode, schedule myself */ if ((card->idat.isa.rcvidx) && (card->idat.isa.rcvignore || (card->idat.isa.rcvidx < card->idat.isa.rcvlen))) act2000_schedule_poll(card); } test_and_clear_bit(ACT2000_LOCK_RX, (void *) &card->ilock); } void act2000_isa_send(act2000_card * card) { unsigned long flags; struct sk_buff *skb; actcapi_msg *msg; int l; if (test_and_set_bit(ACT2000_LOCK_TX, (void *) &card->ilock) != 0) return; while (1) { save_flags(flags); cli(); if (!(card->sbuf)) { if ((card->sbuf = skb_dequeue(&card->sndq))) { card->ack_msg = card->sbuf->data; msg = (actcapi_msg *)card->sbuf->data; if ((msg->hdr.cmd.cmd == 0x86) && (msg->hdr.cmd.subcmd == 0) ) { /* Save flags in message */ card->need_b3ack = msg->msg.data_b3_req.flags; msg->msg.data_b3_req.flags = 0; } } } restore_flags(flags); if (!(card->sbuf)) { /* No more data to send */ test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock); return; } skb = card->sbuf; l = 0; while (skb->len) { if (act2000_isa_writeb(card, *(skb->data))) { /* Fifo is full, but more data to send */ test_and_clear_bit(ACT2000_LOCK_TX, (void *) &card->ilock); /* Schedule myself */ act2000_schedule_tx(card); return; } skb_pull(skb, 1); l++; } msg = (actcapi_msg *)card->ack_msg; if ((msg->hdr.cmd.cmd == 0x86) && (msg->hdr.cmd.subcmd == 0) ) { /* * If it's user data, reset data-ptr * and put skb into ackq. */ skb->data = card->ack_msg; /* Restore flags in message */ msg->msg.data_b3_req.flags = card->need_b3ack; skb_queue_tail(&card->ackq, skb); } else dev_kfree_skb(skb); card->sbuf = NULL; } } /* * Get firmware ID, check for 'ISDN' signature. */ static int act2000_isa_getid(act2000_card * card) { act2000_fwid fid; u_char *p = (u_char *) & fid; int count = 0; while (1) { if (count > 510) return -EPROTO; if (act2000_isa_readb(card, p++)) break; count++; } if (count <= 20) { printk(KERN_WARNING "act2000: No Firmware-ID!\n"); return -ETIME; } *p = '\0'; fid.revlen[0] = '\0'; if (strcmp(fid.isdn, "ISDN")) { printk(KERN_WARNING "act2000: Wrong Firmware-ID!\n"); return -EPROTO; } if ((p = strchr(fid.revision, '\n'))) *p = '\0'; printk(KERN_INFO "act2000: Firmware-ID: %s\n", fid.revision); if (card->flags & ACT2000_FLAGS_IVALID) { printk(KERN_DEBUG "Enabling Interrupts ...\n"); act2000_isa_enable_irq(card); } return 0; } /* * Download microcode into card, check Firmware signature. */ int act2000_isa_download(act2000_card * card, act2000_ddef * cb) { unsigned int length; int ret; int l; int c; long timeout; u_char *b; u_char *p; u_char *buf; act2000_ddef cblock; if (!act2000_isa_reset(card->port)) return -ENXIO; act2000_isa_delay(HZ / 2); if(copy_from_user(&cblock, (char *) cb, sizeof(cblock))) return -EFAULT; length = cblock.length; p = cblock.buffer; if ((ret = verify_area(VERIFY_READ, (void *) p, length))) return ret; buf = (u_char *) kmalloc(1024, GFP_KERNEL); if (!buf) return -ENOMEM; timeout = 0; while (length) { l = (length > 1024) ? 1024 : length; c = 0; b = buf; copy_from_user(buf, p, l); while (c < l) { if (act2000_isa_writeb(card, *b++)) { printk(KERN_WARNING "act2000: loader timed out" " len=%d c=%d\n", length, c); kfree(buf); return -ETIME; } c++; } length -= l; p += l; } kfree(buf); act2000_isa_delay(HZ / 2); return (act2000_isa_getid(card)); } |