| 1 | /*----------------------------------------------------------------*/ |
| 2 | /* |
| 3 | Qlogic linux driver - work in progress. No Warranty express or implied. |
| 4 | Use at your own risk. Support Tort Reform so you won't have to read all |
| 5 | these silly disclaimers. |
| 6 | |
| 7 | Copyright 1994, Tom Zerucha. |
| 8 | tz@execpc.com |
| 9 | |
| 10 | Additional Code, and much appreciated help by |
| 11 | Michael A. Griffith |
| 12 | grif@cs.ucr.edu |
| 13 | |
| 14 | Thanks to Eric Youngdale and Dave Hinds for loadable module and PCMCIA |
| 15 | help respectively, and for suffering through my foolishness during the |
| 16 | debugging process. |
| 17 | |
| 18 | Reference Qlogic FAS408 Technical Manual, 53408-510-00A, May 10, 1994 |
| 19 | (you can reference it, but it is incomplete and inaccurate in places) |
| 20 | |
| 21 | Version 0.46 1/30/97 - kernel 1.2.0+ |
| 22 | |
| 23 | Functions as standalone, loadable, and PCMCIA driver, the latter from |
| 24 | Dave Hinds' PCMCIA package. |
| 25 | |
| 26 | Cleaned up 26/10/2002 by Alan Cox <alan@lxorguk.ukuu.org.uk> as part of the 2.5 |
| 27 | SCSI driver cleanup and audit. This driver still needs work on the |
| 28 | following |
| 29 | - Non terminating hardware waits |
| 30 | - Some layering violations with its pcmcia stub |
| 31 | |
| 32 | Redistributable under terms of the GNU General Public License |
| 33 | |
| 34 | For the avoidance of doubt the "preferred form" of this code is one which |
| 35 | is in an open non patent encumbered format. Where cryptographic key signing |
| 36 | forms part of the process of creating an executable the information |
| 37 | including keys needed to generate an equivalently functional executable |
| 38 | are deemed to be part of the source code. |
| 39 | |
| 40 | */ |
| 41 | |
| 42 | #include <linux/module.h> |
| 43 | #include <linux/blkdev.h> /* to get disk capacity */ |
| 44 | #include <linux/kernel.h> |
| 45 | #include <linux/string.h> |
| 46 | #include <linux/init.h> |
| 47 | #include <linux/interrupt.h> |
| 48 | #include <linux/ioport.h> |
| 49 | #include <linux/proc_fs.h> |
| 50 | #include <linux/unistd.h> |
| 51 | #include <linux/spinlock.h> |
| 52 | #include <linux/stat.h> |
| 53 | |
| 54 | #include <asm/io.h> |
| 55 | #include <asm/irq.h> |
| 56 | #include <asm/dma.h> |
| 57 | |
| 58 | #include <scsi/scsi.h> |
| 59 | #include <scsi/scsi_cmnd.h> |
| 60 | #include <scsi/scsi_device.h> |
| 61 | #include <scsi/scsi_eh.h> |
| 62 | #include <scsi/scsi_host.h> |
| 63 | #include <scsi/scsi_tcq.h> |
| 64 | #include "qlogicfas408.h" |
| 65 | |
| 66 | /*----------------------------------------------------------------*/ |
| 67 | static int qlcfg5 = (XTALFREQ << 5); /* 15625/512 */ |
| 68 | static int qlcfg6 = SYNCXFRPD; |
| 69 | static int qlcfg7 = SYNCOFFST; |
| 70 | static int qlcfg8 = (SLOWCABLE << 7) | (QL_ENABLE_PARITY << 4); |
| 71 | static int qlcfg9 = ((XTALFREQ + 4) / 5); |
| 72 | static int qlcfgc = (FASTCLK << 3) | (FASTSCSI << 4); |
| 73 | |
| 74 | /*----------------------------------------------------------------*/ |
| 75 | |
| 76 | /*----------------------------------------------------------------*/ |
| 77 | /* local functions */ |
| 78 | /*----------------------------------------------------------------*/ |
| 79 | |
| 80 | /* error recovery - reset everything */ |
| 81 | |
| 82 | static void ql_zap(struct qlogicfas408_priv *priv) |
| 83 | { |
| 84 | int x; |
| 85 | int qbase = priv->qbase; |
| 86 | int int_type = priv->int_type; |
| 87 | |
| 88 | x = inb(qbase + 0xd); |
| 89 | REG0; |
| 90 | outb(3, qbase + 3); /* reset SCSI */ |
| 91 | outb(2, qbase + 3); /* reset chip */ |
| 92 | if (x & 0x80) |
| 93 | REG1; |
| 94 | } |
| 95 | |
| 96 | /* |
| 97 | * Do a pseudo-dma tranfer |
| 98 | */ |
| 99 | |
| 100 | static int ql_pdma(struct qlogicfas408_priv *priv, int phase, char *request, |
| 101 | int reqlen) |
| 102 | { |
| 103 | int j; |
| 104 | int qbase = priv->qbase; |
| 105 | j = 0; |
| 106 | if (phase & 1) { /* in */ |
| 107 | #if QL_TURBO_PDMA |
| 108 | rtrc(4) |
| 109 | /* empty fifo in large chunks */ |
| 110 | if (reqlen >= 128 && (inb(qbase + 8) & 2)) { /* full */ |
| 111 | insl(qbase + 4, request, 32); |
| 112 | reqlen -= 128; |
| 113 | request += 128; |
| 114 | } |
| 115 | while (reqlen >= 84 && !(j & 0xc0)) /* 2/3 */ |
| 116 | if ((j = inb(qbase + 8)) & 4) |
| 117 | { |
| 118 | insl(qbase + 4, request, 21); |
| 119 | reqlen -= 84; |
| 120 | request += 84; |
| 121 | } |
| 122 | if (reqlen >= 44 && (inb(qbase + 8) & 8)) { /* 1/3 */ |
| 123 | insl(qbase + 4, request, 11); |
| 124 | reqlen -= 44; |
| 125 | request += 44; |
| 126 | } |
| 127 | #endif |
| 128 | /* until both empty and int (or until reclen is 0) */ |
| 129 | rtrc(7) |
| 130 | j = 0; |
| 131 | while (reqlen && !((j & 0x10) && (j & 0xc0))) |
| 132 | { |
| 133 | /* while bytes to receive and not empty */ |
| 134 | j &= 0xc0; |
| 135 | while (reqlen && !((j = inb(qbase + 8)) & 0x10)) |
| 136 | { |
| 137 | *request++ = inb(qbase + 4); |
| 138 | reqlen--; |
| 139 | } |
| 140 | if (j & 0x10) |
| 141 | j = inb(qbase + 8); |
| 142 | |
| 143 | } |
| 144 | } else { /* out */ |
| 145 | #if QL_TURBO_PDMA |
| 146 | rtrc(4) |
| 147 | if (reqlen >= 128 && inb(qbase + 8) & 0x10) { /* empty */ |
| 148 | outsl(qbase + 4, request, 32); |
| 149 | reqlen -= 128; |
| 150 | request += 128; |
| 151 | } |
| 152 | while (reqlen >= 84 && !(j & 0xc0)) /* 1/3 */ |
| 153 | if (!((j = inb(qbase + 8)) & 8)) { |
| 154 | outsl(qbase + 4, request, 21); |
| 155 | reqlen -= 84; |
| 156 | request += 84; |
| 157 | } |
| 158 | if (reqlen >= 40 && !(inb(qbase + 8) & 4)) { /* 2/3 */ |
| 159 | outsl(qbase + 4, request, 10); |
| 160 | reqlen -= 40; |
| 161 | request += 40; |
| 162 | } |
| 163 | #endif |
| 164 | /* until full and int (or until reclen is 0) */ |
| 165 | rtrc(7) |
| 166 | j = 0; |
| 167 | while (reqlen && !((j & 2) && (j & 0xc0))) { |
| 168 | /* while bytes to send and not full */ |
| 169 | while (reqlen && !((j = inb(qbase + 8)) & 2)) |
| 170 | { |
| 171 | outb(*request++, qbase + 4); |
| 172 | reqlen--; |
| 173 | } |
| 174 | if (j & 2) |
| 175 | j = inb(qbase + 8); |
| 176 | } |
| 177 | } |
| 178 | /* maybe return reqlen */ |
| 179 | return inb(qbase + 8) & 0xc0; |
| 180 | } |
| 181 | |
| 182 | /* |
| 183 | * Wait for interrupt flag (polled - not real hardware interrupt) |
| 184 | */ |
| 185 | |
| 186 | static int ql_wai(struct qlogicfas408_priv *priv) |
| 187 | { |
| 188 | int k; |
| 189 | int qbase = priv->qbase; |
| 190 | unsigned long i; |
| 191 | |
| 192 | k = 0; |
| 193 | i = jiffies + WATCHDOG; |
| 194 | while (time_before(jiffies, i) && !priv->qabort && |
| 195 | !((k = inb(qbase + 4)) & 0xe0)) { |
| 196 | barrier(); |
| 197 | cpu_relax(); |
| 198 | } |
| 199 | if (time_after_eq(jiffies, i)) |
| 200 | return (DID_TIME_OUT); |
| 201 | if (priv->qabort) |
| 202 | return (priv->qabort == 1 ? DID_ABORT : DID_RESET); |
| 203 | if (k & 0x60) |
| 204 | ql_zap(priv); |
| 205 | if (k & 0x20) |
| 206 | return (DID_PARITY); |
| 207 | if (k & 0x40) |
| 208 | return (DID_ERROR); |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Initiate scsi command - queueing handler |
| 214 | * caller must hold host lock |
| 215 | */ |
| 216 | |
| 217 | static void ql_icmd(struct scsi_cmnd *cmd) |
| 218 | { |
| 219 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 220 | int qbase = priv->qbase; |
| 221 | int int_type = priv->int_type; |
| 222 | unsigned int i; |
| 223 | |
| 224 | priv->qabort = 0; |
| 225 | |
| 226 | REG0; |
| 227 | /* clearing of interrupts and the fifo is needed */ |
| 228 | |
| 229 | inb(qbase + 5); /* clear interrupts */ |
| 230 | if (inb(qbase + 5)) /* if still interrupting */ |
| 231 | outb(2, qbase + 3); /* reset chip */ |
| 232 | else if (inb(qbase + 7) & 0x1f) |
| 233 | outb(1, qbase + 3); /* clear fifo */ |
| 234 | while (inb(qbase + 5)); /* clear ints */ |
| 235 | REG1; |
| 236 | outb(1, qbase + 8); /* set for PIO pseudo DMA */ |
| 237 | outb(0, qbase + 0xb); /* disable ints */ |
| 238 | inb(qbase + 8); /* clear int bits */ |
| 239 | REG0; |
| 240 | outb(0x40, qbase + 0xb); /* enable features */ |
| 241 | |
| 242 | /* configurables */ |
| 243 | outb(qlcfgc, qbase + 0xc); |
| 244 | /* config: no reset interrupt, (initiator) bus id */ |
| 245 | outb(0x40 | qlcfg8 | priv->qinitid, qbase + 8); |
| 246 | outb(qlcfg7, qbase + 7); |
| 247 | outb(qlcfg6, qbase + 6); |
| 248 | outb(qlcfg5, qbase + 5); /* select timer */ |
| 249 | outb(qlcfg9 & 7, qbase + 9); /* prescaler */ |
| 250 | /* outb(0x99, qbase + 5); */ |
| 251 | outb(scmd_id(cmd), qbase + 4); |
| 252 | |
| 253 | for (i = 0; i < cmd->cmd_len; i++) |
| 254 | outb(cmd->cmnd[i], qbase + 2); |
| 255 | |
| 256 | priv->qlcmd = cmd; |
| 257 | outb(0x41, qbase + 3); /* select and send command */ |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * Process scsi command - usually after interrupt |
| 262 | */ |
| 263 | |
| 264 | static void ql_pcmd(struct scsi_cmnd *cmd) |
| 265 | { |
| 266 | unsigned int i, j; |
| 267 | unsigned long k; |
| 268 | unsigned int status; /* scsi returned status */ |
| 269 | unsigned int message; /* scsi returned message */ |
| 270 | unsigned int phase; /* recorded scsi phase */ |
| 271 | unsigned int reqlen; /* total length of transfer */ |
| 272 | char *buf; |
| 273 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 274 | int qbase = priv->qbase; |
| 275 | int int_type = priv->int_type; |
| 276 | |
| 277 | rtrc(1) |
| 278 | j = inb(qbase + 6); |
| 279 | i = inb(qbase + 5); |
| 280 | if (i == 0x20) { |
| 281 | set_host_byte(cmd, DID_NO_CONNECT); |
| 282 | return; |
| 283 | } |
| 284 | i |= inb(qbase + 5); /* the 0x10 bit can be set after the 0x08 */ |
| 285 | if (i != 0x18) { |
| 286 | printk(KERN_ERR "Ql:Bad Interrupt status:%02x\n", i); |
| 287 | ql_zap(priv); |
| 288 | set_host_byte(cmd, DID_BAD_INTR); |
| 289 | return; |
| 290 | } |
| 291 | j &= 7; /* j = inb( qbase + 7 ) >> 5; */ |
| 292 | |
| 293 | /* correct status is supposed to be step 4 */ |
| 294 | /* it sometimes returns step 3 but with 0 bytes left to send */ |
| 295 | /* We can try stuffing the FIFO with the max each time, but we will get a |
| 296 | sequence of 3 if any bytes are left (but we do flush the FIFO anyway */ |
| 297 | |
| 298 | if (j != 3 && j != 4) { |
| 299 | printk(KERN_ERR "Ql:Bad sequence for command %d, int %02X, cmdleft = %d\n", |
| 300 | j, i, inb(qbase + 7) & 0x1f); |
| 301 | ql_zap(priv); |
| 302 | set_host_byte(cmd, DID_ERROR); |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | if (inb(qbase + 7) & 0x1f) /* if some bytes in fifo */ |
| 307 | outb(1, qbase + 3); /* clear fifo */ |
| 308 | /* note that request_bufflen is the total xfer size when sg is used */ |
| 309 | reqlen = scsi_bufflen(cmd); |
| 310 | /* note that it won't work if transfers > 16M are requested */ |
| 311 | if (reqlen && !((phase = inb(qbase + 4)) & 6)) { /* data phase */ |
| 312 | struct scatterlist *sg; |
| 313 | rtrc(2) |
| 314 | outb(reqlen, qbase); /* low-mid xfer cnt */ |
| 315 | outb(reqlen >> 8, qbase + 1); /* low-mid xfer cnt */ |
| 316 | outb(reqlen >> 16, qbase + 0xe); /* high xfer cnt */ |
| 317 | outb(0x90, qbase + 3); /* command do xfer */ |
| 318 | /* PIO pseudo DMA to buffer or sglist */ |
| 319 | REG1; |
| 320 | |
| 321 | scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) { |
| 322 | if (priv->qabort) { |
| 323 | REG0; |
| 324 | set_host_byte(cmd, |
| 325 | priv->qabort == 1 ? |
| 326 | DID_ABORT : DID_RESET); |
| 327 | } |
| 328 | buf = sg_virt(sg); |
| 329 | if (ql_pdma(priv, phase, buf, sg->length)) |
| 330 | break; |
| 331 | } |
| 332 | REG0; |
| 333 | rtrc(2); |
| 334 | /* |
| 335 | * Wait for irq (split into second state of irq handler |
| 336 | * if this can take time) |
| 337 | */ |
| 338 | if ((k = ql_wai(priv))) { |
| 339 | set_host_byte(cmd, k); |
| 340 | return; |
| 341 | } |
| 342 | k = inb(qbase + 5); /* should be 0x10, bus service */ |
| 343 | } |
| 344 | |
| 345 | /* |
| 346 | * Enter Status (and Message In) Phase |
| 347 | */ |
| 348 | |
| 349 | k = jiffies + WATCHDOG; |
| 350 | |
| 351 | while (time_before(jiffies, k) && !priv->qabort && |
| 352 | !(inb(qbase + 4) & 6)) |
| 353 | cpu_relax(); /* wait for status phase */ |
| 354 | |
| 355 | if (time_after_eq(jiffies, k)) { |
| 356 | ql_zap(priv); |
| 357 | set_host_byte(cmd, DID_TIME_OUT); |
| 358 | return; |
| 359 | } |
| 360 | |
| 361 | /* FIXME: timeout ?? */ |
| 362 | while (inb(qbase + 5)) |
| 363 | cpu_relax(); /* clear pending ints */ |
| 364 | |
| 365 | if (priv->qabort) { |
| 366 | set_host_byte(cmd, |
| 367 | priv->qabort == 1 ? DID_ABORT : DID_RESET); |
| 368 | return; |
| 369 | } |
| 370 | |
| 371 | outb(0x11, qbase + 3); /* get status and message */ |
| 372 | if ((k = ql_wai(priv))) { |
| 373 | set_host_byte(cmd, k); |
| 374 | return; |
| 375 | } |
| 376 | i = inb(qbase + 5); /* get chip irq stat */ |
| 377 | j = inb(qbase + 7) & 0x1f; /* and bytes rec'd */ |
| 378 | status = inb(qbase + 2); |
| 379 | message = inb(qbase + 2); |
| 380 | |
| 381 | /* |
| 382 | * Should get function complete int if Status and message, else |
| 383 | * bus serv if only status |
| 384 | */ |
| 385 | if (!((i == 8 && j == 2) || (i == 0x10 && j == 1))) { |
| 386 | printk(KERN_ERR "Ql:Error during status phase, int=%02X, %d bytes recd\n", i, j); |
| 387 | set_host_byte(cmd, DID_ERROR); |
| 388 | } |
| 389 | outb(0x12, qbase + 3); /* done, disconnect */ |
| 390 | rtrc(1); |
| 391 | if ((k = ql_wai(priv))) { |
| 392 | set_host_byte(cmd, k); |
| 393 | return; |
| 394 | } |
| 395 | |
| 396 | /* |
| 397 | * Should get bus service interrupt and disconnect interrupt |
| 398 | */ |
| 399 | |
| 400 | i = inb(qbase + 5); /* should be bus service */ |
| 401 | while (!priv->qabort && ((i & 0x20) != 0x20)) { |
| 402 | barrier(); |
| 403 | cpu_relax(); |
| 404 | i |= inb(qbase + 5); |
| 405 | } |
| 406 | rtrc(0); |
| 407 | |
| 408 | if (priv->qabort) { |
| 409 | set_host_byte(cmd, |
| 410 | priv->qabort == 1 ? DID_ABORT : DID_RESET); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | set_host_byte(cmd, DID_OK); |
| 415 | if (message != COMMAND_COMPLETE) |
| 416 | scsi_msg_to_host_byte(cmd, message); |
| 417 | set_status_byte(cmd, status); |
| 418 | return; |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Interrupt handler |
| 423 | */ |
| 424 | |
| 425 | static void ql_ihandl(void *dev_id) |
| 426 | { |
| 427 | struct scsi_cmnd *icmd; |
| 428 | struct Scsi_Host *host = dev_id; |
| 429 | struct qlogicfas408_priv *priv = get_priv_by_host(host); |
| 430 | int qbase = priv->qbase; |
| 431 | REG0; |
| 432 | |
| 433 | if (!(inb(qbase + 4) & 0x80)) /* false alarm? */ |
| 434 | return; |
| 435 | |
| 436 | if (priv->qlcmd == NULL) { /* no command to process? */ |
| 437 | int i; |
| 438 | i = 16; |
| 439 | while (i-- && inb(qbase + 5)); /* maybe also ql_zap() */ |
| 440 | return; |
| 441 | } |
| 442 | icmd = priv->qlcmd; |
| 443 | ql_pcmd(icmd); |
| 444 | priv->qlcmd = NULL; |
| 445 | /* |
| 446 | * If result is CHECK CONDITION done calls qcommand to request |
| 447 | * sense |
| 448 | */ |
| 449 | scsi_done(icmd); |
| 450 | } |
| 451 | |
| 452 | irqreturn_t qlogicfas408_ihandl(int irq, void *dev_id) |
| 453 | { |
| 454 | unsigned long flags; |
| 455 | struct Scsi_Host *host = dev_id; |
| 456 | |
| 457 | spin_lock_irqsave(host->host_lock, flags); |
| 458 | ql_ihandl(dev_id); |
| 459 | spin_unlock_irqrestore(host->host_lock, flags); |
| 460 | return IRQ_HANDLED; |
| 461 | } |
| 462 | |
| 463 | /* |
| 464 | * Queued command |
| 465 | */ |
| 466 | |
| 467 | static int qlogicfas408_queuecommand_lck(struct scsi_cmnd *cmd) |
| 468 | { |
| 469 | void (*done)(struct scsi_cmnd *) = scsi_done; |
| 470 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 471 | |
| 472 | set_host_byte(cmd, DID_OK); |
| 473 | set_status_byte(cmd, SAM_STAT_GOOD); |
| 474 | if (scmd_id(cmd) == priv->qinitid) { |
| 475 | set_host_byte(cmd, DID_BAD_TARGET); |
| 476 | done(cmd); |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | /* wait for the last command's interrupt to finish */ |
| 481 | while (priv->qlcmd != NULL) { |
| 482 | barrier(); |
| 483 | cpu_relax(); |
| 484 | } |
| 485 | ql_icmd(cmd); |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | DEF_SCSI_QCMD(qlogicfas408_queuecommand) |
| 490 | |
| 491 | /* |
| 492 | * Return bios parameters |
| 493 | */ |
| 494 | |
| 495 | int qlogicfas408_biosparam(struct scsi_device *disk, struct block_device *dev, |
| 496 | sector_t capacity, int ip[]) |
| 497 | { |
| 498 | /* This should mimic the DOS Qlogic driver's behavior exactly */ |
| 499 | ip[0] = 0x40; |
| 500 | ip[1] = 0x20; |
| 501 | ip[2] = (unsigned long) capacity / (ip[0] * ip[1]); |
| 502 | if (ip[2] > 1024) { |
| 503 | ip[0] = 0xff; |
| 504 | ip[1] = 0x3f; |
| 505 | ip[2] = (unsigned long) capacity / (ip[0] * ip[1]); |
| 506 | #if 0 |
| 507 | if (ip[2] > 1023) |
| 508 | ip[2] = 1023; |
| 509 | #endif |
| 510 | } |
| 511 | return 0; |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | * Abort a command in progress |
| 516 | */ |
| 517 | |
| 518 | int qlogicfas408_abort(struct scsi_cmnd *cmd) |
| 519 | { |
| 520 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 521 | priv->qabort = 1; |
| 522 | ql_zap(priv); |
| 523 | return SUCCESS; |
| 524 | } |
| 525 | |
| 526 | /* |
| 527 | * Reset SCSI bus |
| 528 | * FIXME: This function is invoked with cmd = NULL directly by |
| 529 | * the PCMCIA qlogic_stub code. This wants fixing |
| 530 | */ |
| 531 | |
| 532 | int qlogicfas408_host_reset(struct scsi_cmnd *cmd) |
| 533 | { |
| 534 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 535 | unsigned long flags; |
| 536 | |
| 537 | priv->qabort = 2; |
| 538 | |
| 539 | spin_lock_irqsave(cmd->device->host->host_lock, flags); |
| 540 | ql_zap(priv); |
| 541 | spin_unlock_irqrestore(cmd->device->host->host_lock, flags); |
| 542 | |
| 543 | return SUCCESS; |
| 544 | } |
| 545 | |
| 546 | /* |
| 547 | * Return info string |
| 548 | */ |
| 549 | |
| 550 | const char *qlogicfas408_info(struct Scsi_Host *host) |
| 551 | { |
| 552 | struct qlogicfas408_priv *priv = get_priv_by_host(host); |
| 553 | return priv->qinfo; |
| 554 | } |
| 555 | |
| 556 | /* |
| 557 | * Get type of chip |
| 558 | */ |
| 559 | |
| 560 | int qlogicfas408_get_chip_type(int qbase, int int_type) |
| 561 | { |
| 562 | REG1; |
| 563 | return inb(qbase + 0xe) & 0xf8; |
| 564 | } |
| 565 | |
| 566 | /* |
| 567 | * Perform initialization tasks |
| 568 | */ |
| 569 | |
| 570 | void qlogicfas408_setup(int qbase, int id, int int_type) |
| 571 | { |
| 572 | outb(1, qbase + 8); /* set for PIO pseudo DMA */ |
| 573 | REG0; |
| 574 | outb(0x40 | qlcfg8 | id, qbase + 8); /* (ini) bus id, disable scsi rst */ |
| 575 | outb(qlcfg5, qbase + 5); /* select timer */ |
| 576 | outb(qlcfg9, qbase + 9); /* prescaler */ |
| 577 | |
| 578 | #if QL_RESET_AT_START |
| 579 | outb(3, qbase + 3); |
| 580 | |
| 581 | REG1; |
| 582 | /* FIXME: timeout */ |
| 583 | while (inb(qbase + 0xf) & 4) |
| 584 | cpu_relax(); |
| 585 | |
| 586 | REG0; |
| 587 | #endif |
| 588 | } |
| 589 | |
| 590 | /* |
| 591 | * Checks if this is a QLogic FAS 408 |
| 592 | */ |
| 593 | |
| 594 | int qlogicfas408_detect(int qbase, int int_type) |
| 595 | { |
| 596 | REG1; |
| 597 | return (((inb(qbase + 0xe) ^ inb(qbase + 0xe)) == 7) && |
| 598 | ((inb(qbase + 0xe) ^ inb(qbase + 0xe)) == 7)); |
| 599 | } |
| 600 | |
| 601 | /* |
| 602 | * Disable interrupts |
| 603 | */ |
| 604 | |
| 605 | void qlogicfas408_disable_ints(struct qlogicfas408_priv *priv) |
| 606 | { |
| 607 | int qbase = priv->qbase; |
| 608 | int int_type = priv->int_type; |
| 609 | |
| 610 | REG1; |
| 611 | outb(0, qbase + 0xb); /* disable ints */ |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * Init and exit functions |
| 616 | */ |
| 617 | |
| 618 | static int __init qlogicfas408_init(void) |
| 619 | { |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | static void __exit qlogicfas408_exit(void) |
| 624 | { |
| 625 | |
| 626 | } |
| 627 | |
| 628 | MODULE_AUTHOR("Tom Zerucha, Michael Griffith"); |
| 629 | MODULE_DESCRIPTION("Driver for the Qlogic FAS SCSI controllers"); |
| 630 | MODULE_LICENSE("GPL"); |
| 631 | module_init(qlogicfas408_init); |
| 632 | module_exit(qlogicfas408_exit); |
| 633 | |
| 634 | EXPORT_SYMBOL(qlogicfas408_info); |
| 635 | EXPORT_SYMBOL(qlogicfas408_queuecommand); |
| 636 | EXPORT_SYMBOL(qlogicfas408_abort); |
| 637 | EXPORT_SYMBOL(qlogicfas408_host_reset); |
| 638 | EXPORT_SYMBOL(qlogicfas408_biosparam); |
| 639 | EXPORT_SYMBOL(qlogicfas408_ihandl); |
| 640 | EXPORT_SYMBOL(qlogicfas408_get_chip_type); |
| 641 | EXPORT_SYMBOL(qlogicfas408_setup); |
| 642 | EXPORT_SYMBOL(qlogicfas408_detect); |
| 643 | EXPORT_SYMBOL(qlogicfas408_disable_ints); |
| 644 | |