Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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@redhat.com> 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.h" |
| 59 | #include <scsi/scsi_host.h> |
| 60 | #include "qlogicfas408.h" |
| 61 | |
| 62 | /*----------------------------------------------------------------*/ |
| 63 | static int qlcfg5 = (XTALFREQ << 5); /* 15625/512 */ |
| 64 | static int qlcfg6 = SYNCXFRPD; |
| 65 | static int qlcfg7 = SYNCOFFST; |
| 66 | static int qlcfg8 = (SLOWCABLE << 7) | (QL_ENABLE_PARITY << 4); |
| 67 | static int qlcfg9 = ((XTALFREQ + 4) / 5); |
| 68 | static int qlcfgc = (FASTCLK << 3) | (FASTSCSI << 4); |
| 69 | |
| 70 | /*----------------------------------------------------------------*/ |
| 71 | |
| 72 | /*----------------------------------------------------------------*/ |
| 73 | /* local functions */ |
| 74 | /*----------------------------------------------------------------*/ |
| 75 | |
| 76 | /* error recovery - reset everything */ |
| 77 | |
| 78 | static void ql_zap(struct qlogicfas408_priv *priv) |
| 79 | { |
| 80 | int x; |
| 81 | int qbase = priv->qbase; |
| 82 | int int_type = priv->int_type; |
| 83 | |
| 84 | x = inb(qbase + 0xd); |
| 85 | REG0; |
| 86 | outb(3, qbase + 3); /* reset SCSI */ |
| 87 | outb(2, qbase + 3); /* reset chip */ |
| 88 | if (x & 0x80) |
| 89 | REG1; |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * Do a pseudo-dma tranfer |
| 94 | */ |
| 95 | |
| 96 | static int ql_pdma(struct qlogicfas408_priv *priv, int phase, char *request, int reqlen) |
| 97 | { |
| 98 | int j; |
| 99 | int qbase = priv->qbase; |
| 100 | j = 0; |
| 101 | if (phase & 1) { /* in */ |
| 102 | #if QL_TURBO_PDMA |
| 103 | rtrc(4) |
| 104 | /* empty fifo in large chunks */ |
| 105 | if (reqlen >= 128 && (inb(qbase + 8) & 2)) { /* full */ |
| 106 | insl(qbase + 4, request, 32); |
| 107 | reqlen -= 128; |
| 108 | request += 128; |
| 109 | } |
| 110 | while (reqlen >= 84 && !(j & 0xc0)) /* 2/3 */ |
| 111 | if ((j = inb(qbase + 8)) & 4) |
| 112 | { |
| 113 | insl(qbase + 4, request, 21); |
| 114 | reqlen -= 84; |
| 115 | request += 84; |
| 116 | } |
| 117 | if (reqlen >= 44 && (inb(qbase + 8) & 8)) { /* 1/3 */ |
| 118 | insl(qbase + 4, request, 11); |
| 119 | reqlen -= 44; |
| 120 | request += 44; |
| 121 | } |
| 122 | #endif |
| 123 | /* until both empty and int (or until reclen is 0) */ |
| 124 | rtrc(7) |
| 125 | j = 0; |
| 126 | while (reqlen && !((j & 0x10) && (j & 0xc0))) |
| 127 | { |
| 128 | /* while bytes to receive and not empty */ |
| 129 | j &= 0xc0; |
| 130 | while (reqlen && !((j = inb(qbase + 8)) & 0x10)) |
| 131 | { |
| 132 | *request++ = inb(qbase + 4); |
| 133 | reqlen--; |
| 134 | } |
| 135 | if (j & 0x10) |
| 136 | j = inb(qbase + 8); |
| 137 | |
| 138 | } |
| 139 | } else { /* out */ |
| 140 | #if QL_TURBO_PDMA |
| 141 | rtrc(4) |
| 142 | if (reqlen >= 128 && inb(qbase + 8) & 0x10) { /* empty */ |
| 143 | outsl(qbase + 4, request, 32); |
| 144 | reqlen -= 128; |
| 145 | request += 128; |
| 146 | } |
| 147 | while (reqlen >= 84 && !(j & 0xc0)) /* 1/3 */ |
| 148 | if (!((j = inb(qbase + 8)) & 8)) { |
| 149 | outsl(qbase + 4, request, 21); |
| 150 | reqlen -= 84; |
| 151 | request += 84; |
| 152 | } |
| 153 | if (reqlen >= 40 && !(inb(qbase + 8) & 4)) { /* 2/3 */ |
| 154 | outsl(qbase + 4, request, 10); |
| 155 | reqlen -= 40; |
| 156 | request += 40; |
| 157 | } |
| 158 | #endif |
| 159 | /* until full and int (or until reclen is 0) */ |
| 160 | rtrc(7) |
| 161 | j = 0; |
| 162 | while (reqlen && !((j & 2) && (j & 0xc0))) { |
| 163 | /* while bytes to send and not full */ |
| 164 | while (reqlen && !((j = inb(qbase + 8)) & 2)) |
| 165 | { |
| 166 | outb(*request++, qbase + 4); |
| 167 | reqlen--; |
| 168 | } |
| 169 | if (j & 2) |
| 170 | j = inb(qbase + 8); |
| 171 | } |
| 172 | } |
| 173 | /* maybe return reqlen */ |
| 174 | return inb(qbase + 8) & 0xc0; |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * Wait for interrupt flag (polled - not real hardware interrupt) |
| 179 | */ |
| 180 | |
| 181 | static int ql_wai(struct qlogicfas408_priv *priv) |
| 182 | { |
| 183 | int k; |
| 184 | int qbase = priv->qbase; |
| 185 | unsigned long i; |
| 186 | |
| 187 | k = 0; |
| 188 | i = jiffies + WATCHDOG; |
| 189 | while (time_before(jiffies, i) && !priv->qabort && |
| 190 | !((k = inb(qbase + 4)) & 0xe0)) { |
| 191 | barrier(); |
| 192 | cpu_relax(); |
| 193 | } |
| 194 | if (time_after_eq(jiffies, i)) |
| 195 | return (DID_TIME_OUT); |
| 196 | if (priv->qabort) |
| 197 | return (priv->qabort == 1 ? DID_ABORT : DID_RESET); |
| 198 | if (k & 0x60) |
| 199 | ql_zap(priv); |
| 200 | if (k & 0x20) |
| 201 | return (DID_PARITY); |
| 202 | if (k & 0x40) |
| 203 | return (DID_ERROR); |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | /* |
| 208 | * Initiate scsi command - queueing handler |
| 209 | * caller must hold host lock |
| 210 | */ |
| 211 | |
| 212 | static void ql_icmd(Scsi_Cmnd * cmd) |
| 213 | { |
| 214 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 215 | int qbase = priv->qbase; |
| 216 | int int_type = priv->int_type; |
| 217 | unsigned int i; |
| 218 | |
| 219 | priv->qabort = 0; |
| 220 | |
| 221 | REG0; |
| 222 | /* clearing of interrupts and the fifo is needed */ |
| 223 | |
| 224 | inb(qbase + 5); /* clear interrupts */ |
| 225 | if (inb(qbase + 5)) /* if still interrupting */ |
| 226 | outb(2, qbase + 3); /* reset chip */ |
| 227 | else if (inb(qbase + 7) & 0x1f) |
| 228 | outb(1, qbase + 3); /* clear fifo */ |
| 229 | while (inb(qbase + 5)); /* clear ints */ |
| 230 | REG1; |
| 231 | outb(1, qbase + 8); /* set for PIO pseudo DMA */ |
| 232 | outb(0, qbase + 0xb); /* disable ints */ |
| 233 | inb(qbase + 8); /* clear int bits */ |
| 234 | REG0; |
| 235 | outb(0x40, qbase + 0xb); /* enable features */ |
| 236 | |
| 237 | /* configurables */ |
| 238 | outb(qlcfgc, qbase + 0xc); |
| 239 | /* config: no reset interrupt, (initiator) bus id */ |
| 240 | outb(0x40 | qlcfg8 | priv->qinitid, qbase + 8); |
| 241 | outb(qlcfg7, qbase + 7); |
| 242 | outb(qlcfg6, qbase + 6); |
| 243 | /**/ outb(qlcfg5, qbase + 5); /* select timer */ |
| 244 | outb(qlcfg9 & 7, qbase + 9); /* prescaler */ |
| 245 | /* outb(0x99, qbase + 5); */ |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 246 | outb(scmd_id(cmd), qbase + 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | for (i = 0; i < cmd->cmd_len; i++) |
| 249 | outb(cmd->cmnd[i], qbase + 2); |
| 250 | |
| 251 | priv->qlcmd = cmd; |
| 252 | outb(0x41, qbase + 3); /* select and send command */ |
| 253 | } |
| 254 | |
| 255 | /* |
| 256 | * Process scsi command - usually after interrupt |
| 257 | */ |
| 258 | |
| 259 | static unsigned int ql_pcmd(Scsi_Cmnd * cmd) |
| 260 | { |
| 261 | unsigned int i, j; |
| 262 | unsigned long k; |
| 263 | unsigned int result; /* ultimate return result */ |
| 264 | unsigned int status; /* scsi returned status */ |
| 265 | unsigned int message; /* scsi returned message */ |
| 266 | unsigned int phase; /* recorded scsi phase */ |
| 267 | unsigned int reqlen; /* total length of transfer */ |
| 268 | struct scatterlist *sglist; /* scatter-gather list pointer */ |
| 269 | unsigned int sgcount; /* sg counter */ |
| 270 | char *buf; |
| 271 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 272 | int qbase = priv->qbase; |
| 273 | int int_type = priv->int_type; |
| 274 | |
| 275 | rtrc(1) |
| 276 | j = inb(qbase + 6); |
| 277 | i = inb(qbase + 5); |
| 278 | if (i == 0x20) { |
| 279 | return (DID_NO_CONNECT << 16); |
| 280 | } |
| 281 | i |= inb(qbase + 5); /* the 0x10 bit can be set after the 0x08 */ |
| 282 | if (i != 0x18) { |
| 283 | printk(KERN_ERR "Ql:Bad Interrupt status:%02x\n", i); |
| 284 | ql_zap(priv); |
| 285 | return (DID_BAD_INTR << 16); |
| 286 | } |
| 287 | j &= 7; /* j = inb( qbase + 7 ) >> 5; */ |
| 288 | |
| 289 | /* correct status is supposed to be step 4 */ |
| 290 | /* it sometimes returns step 3 but with 0 bytes left to send */ |
| 291 | /* We can try stuffing the FIFO with the max each time, but we will get a |
| 292 | sequence of 3 if any bytes are left (but we do flush the FIFO anyway */ |
| 293 | |
| 294 | if (j != 3 && j != 4) { |
| 295 | printk(KERN_ERR "Ql:Bad sequence for command %d, int %02X, cmdleft = %d\n", |
| 296 | j, i, inb(qbase + 7) & 0x1f); |
| 297 | ql_zap(priv); |
| 298 | return (DID_ERROR << 16); |
| 299 | } |
| 300 | result = DID_OK; |
| 301 | if (inb(qbase + 7) & 0x1f) /* if some bytes in fifo */ |
| 302 | outb(1, qbase + 3); /* clear fifo */ |
| 303 | /* note that request_bufflen is the total xfer size when sg is used */ |
| 304 | reqlen = cmd->request_bufflen; |
| 305 | /* note that it won't work if transfers > 16M are requested */ |
| 306 | if (reqlen && !((phase = inb(qbase + 4)) & 6)) { /* data phase */ |
| 307 | rtrc(2) |
| 308 | outb(reqlen, qbase); /* low-mid xfer cnt */ |
| 309 | outb(reqlen >> 8, qbase + 1); /* low-mid xfer cnt */ |
| 310 | outb(reqlen >> 16, qbase + 0xe); /* high xfer cnt */ |
| 311 | outb(0x90, qbase + 3); /* command do xfer */ |
| 312 | /* PIO pseudo DMA to buffer or sglist */ |
| 313 | REG1; |
| 314 | if (!cmd->use_sg) |
| 315 | ql_pdma(priv, phase, cmd->request_buffer, |
| 316 | cmd->request_bufflen); |
| 317 | else { |
| 318 | sgcount = cmd->use_sg; |
| 319 | sglist = cmd->request_buffer; |
| 320 | while (sgcount--) { |
| 321 | if (priv->qabort) { |
| 322 | REG0; |
| 323 | return ((priv->qabort == 1 ? |
| 324 | DID_ABORT : DID_RESET) << 16); |
| 325 | } |
| 326 | buf = page_address(sglist->page) + sglist->offset; |
| 327 | if (ql_pdma(priv, phase, buf, sglist->length)) |
| 328 | break; |
| 329 | sglist++; |
| 330 | } |
| 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 | return (k << 16); |
| 340 | k = inb(qbase + 5); /* should be 0x10, bus service */ |
| 341 | } |
| 342 | |
| 343 | /* |
| 344 | * Enter Status (and Message In) Phase |
| 345 | */ |
| 346 | |
| 347 | k = jiffies + WATCHDOG; |
| 348 | |
| 349 | while (time_before(jiffies, k) && !priv->qabort && |
| 350 | !(inb(qbase + 4) & 6)) |
| 351 | cpu_relax(); /* wait for status phase */ |
| 352 | |
| 353 | if (time_after_eq(jiffies, k)) { |
| 354 | ql_zap(priv); |
| 355 | return (DID_TIME_OUT << 16); |
| 356 | } |
| 357 | |
| 358 | /* FIXME: timeout ?? */ |
| 359 | while (inb(qbase + 5)) |
| 360 | cpu_relax(); /* clear pending ints */ |
| 361 | |
| 362 | if (priv->qabort) |
| 363 | return ((priv->qabort == 1 ? DID_ABORT : DID_RESET) << 16); |
| 364 | |
| 365 | outb(0x11, qbase + 3); /* get status and message */ |
| 366 | if ((k = ql_wai(priv))) |
| 367 | return (k << 16); |
| 368 | i = inb(qbase + 5); /* get chip irq stat */ |
| 369 | j = inb(qbase + 7) & 0x1f; /* and bytes rec'd */ |
| 370 | status = inb(qbase + 2); |
| 371 | message = inb(qbase + 2); |
| 372 | |
| 373 | /* |
| 374 | * Should get function complete int if Status and message, else |
| 375 | * bus serv if only status |
| 376 | */ |
| 377 | if (!((i == 8 && j == 2) || (i == 0x10 && j == 1))) { |
| 378 | printk(KERN_ERR "Ql:Error during status phase, int=%02X, %d bytes recd\n", i, j); |
| 379 | result = DID_ERROR; |
| 380 | } |
| 381 | outb(0x12, qbase + 3); /* done, disconnect */ |
| 382 | rtrc(1) |
| 383 | if ((k = ql_wai(priv))) |
| 384 | return (k << 16); |
| 385 | |
| 386 | /* |
| 387 | * Should get bus service interrupt and disconnect interrupt |
| 388 | */ |
| 389 | |
| 390 | i = inb(qbase + 5); /* should be bus service */ |
| 391 | while (!priv->qabort && ((i & 0x20) != 0x20)) { |
| 392 | barrier(); |
| 393 | cpu_relax(); |
| 394 | i |= inb(qbase + 5); |
| 395 | } |
| 396 | rtrc(0) |
| 397 | |
| 398 | if (priv->qabort) |
| 399 | return ((priv->qabort == 1 ? DID_ABORT : DID_RESET) << 16); |
| 400 | |
| 401 | return (result << 16) | (message << 8) | (status & STATUS_MASK); |
| 402 | } |
| 403 | |
| 404 | /* |
| 405 | * Interrupt handler |
| 406 | */ |
| 407 | |
| 408 | static void ql_ihandl(int irq, void *dev_id, struct pt_regs *regs) |
| 409 | { |
| 410 | Scsi_Cmnd *icmd; |
| 411 | struct Scsi_Host *host = (struct Scsi_Host *)dev_id; |
| 412 | struct qlogicfas408_priv *priv = get_priv_by_host(host); |
| 413 | int qbase = priv->qbase; |
| 414 | REG0; |
| 415 | |
| 416 | if (!(inb(qbase + 4) & 0x80)) /* false alarm? */ |
| 417 | return; |
| 418 | |
| 419 | if (priv->qlcmd == NULL) { /* no command to process? */ |
| 420 | int i; |
| 421 | i = 16; |
| 422 | while (i-- && inb(qbase + 5)); /* maybe also ql_zap() */ |
| 423 | return; |
| 424 | } |
| 425 | icmd = priv->qlcmd; |
| 426 | icmd->result = ql_pcmd(icmd); |
| 427 | priv->qlcmd = NULL; |
| 428 | /* |
| 429 | * If result is CHECK CONDITION done calls qcommand to request |
| 430 | * sense |
| 431 | */ |
| 432 | (icmd->scsi_done) (icmd); |
| 433 | } |
| 434 | |
| 435 | irqreturn_t qlogicfas408_ihandl(int irq, void *dev_id, struct pt_regs *regs) |
| 436 | { |
| 437 | unsigned long flags; |
| 438 | struct Scsi_Host *host = dev_id; |
| 439 | |
| 440 | spin_lock_irqsave(host->host_lock, flags); |
| 441 | ql_ihandl(irq, dev_id, regs); |
| 442 | spin_unlock_irqrestore(host->host_lock, flags); |
| 443 | return IRQ_HANDLED; |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * Queued command |
| 448 | */ |
| 449 | |
| 450 | int qlogicfas408_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *)) |
| 451 | { |
| 452 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 453 | if (scmd_id(cmd) == priv->qinitid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | cmd->result = DID_BAD_TARGET << 16; |
| 455 | done(cmd); |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | cmd->scsi_done = done; |
| 460 | /* wait for the last command's interrupt to finish */ |
| 461 | while (priv->qlcmd != NULL) { |
| 462 | barrier(); |
| 463 | cpu_relax(); |
| 464 | } |
| 465 | ql_icmd(cmd); |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Return bios parameters |
| 471 | */ |
| 472 | |
| 473 | int qlogicfas408_biosparam(struct scsi_device * disk, |
| 474 | struct block_device *dev, |
| 475 | sector_t capacity, int ip[]) |
| 476 | { |
| 477 | /* This should mimic the DOS Qlogic driver's behavior exactly */ |
| 478 | ip[0] = 0x40; |
| 479 | ip[1] = 0x20; |
| 480 | ip[2] = (unsigned long) capacity / (ip[0] * ip[1]); |
| 481 | if (ip[2] > 1024) { |
| 482 | ip[0] = 0xff; |
| 483 | ip[1] = 0x3f; |
| 484 | ip[2] = (unsigned long) capacity / (ip[0] * ip[1]); |
| 485 | #if 0 |
| 486 | if (ip[2] > 1023) |
| 487 | ip[2] = 1023; |
| 488 | #endif |
| 489 | } |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | /* |
| 494 | * Abort a command in progress |
| 495 | */ |
| 496 | |
| 497 | int qlogicfas408_abort(Scsi_Cmnd * cmd) |
| 498 | { |
| 499 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
| 500 | priv->qabort = 1; |
| 501 | ql_zap(priv); |
| 502 | return SUCCESS; |
| 503 | } |
| 504 | |
| 505 | /* |
| 506 | * Reset SCSI bus |
| 507 | * FIXME: This function is invoked with cmd = NULL directly by |
| 508 | * the PCMCIA qlogic_stub code. This wants fixing |
| 509 | */ |
| 510 | |
| 511 | int qlogicfas408_bus_reset(Scsi_Cmnd * cmd) |
| 512 | { |
| 513 | struct qlogicfas408_priv *priv = get_priv_by_cmd(cmd); |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 514 | unsigned long flags; |
| 515 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | priv->qabort = 2; |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 517 | |
| 518 | spin_lock_irqsave(cmd->device->host->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | ql_zap(priv); |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 520 | spin_unlock_irqrestore(cmd->device->host->host_lock, flags); |
| 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | return SUCCESS; |
| 523 | } |
| 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | /* |
| 526 | * Return info string |
| 527 | */ |
| 528 | |
| 529 | const char *qlogicfas408_info(struct Scsi_Host *host) |
| 530 | { |
| 531 | struct qlogicfas408_priv *priv = get_priv_by_host(host); |
| 532 | return priv->qinfo; |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * Get type of chip |
| 537 | */ |
| 538 | |
| 539 | int qlogicfas408_get_chip_type(int qbase, int int_type) |
| 540 | { |
| 541 | REG1; |
| 542 | return inb(qbase + 0xe) & 0xf8; |
| 543 | } |
| 544 | |
| 545 | /* |
| 546 | * Perform initialization tasks |
| 547 | */ |
| 548 | |
| 549 | void qlogicfas408_setup(int qbase, int id, int int_type) |
| 550 | { |
| 551 | outb(1, qbase + 8); /* set for PIO pseudo DMA */ |
| 552 | REG0; |
| 553 | outb(0x40 | qlcfg8 | id, qbase + 8); /* (ini) bus id, disable scsi rst */ |
| 554 | outb(qlcfg5, qbase + 5); /* select timer */ |
| 555 | outb(qlcfg9, qbase + 9); /* prescaler */ |
| 556 | |
| 557 | #if QL_RESET_AT_START |
| 558 | outb(3, qbase + 3); |
| 559 | |
| 560 | REG1; |
| 561 | /* FIXME: timeout */ |
| 562 | while (inb(qbase + 0xf) & 4) |
| 563 | cpu_relax(); |
| 564 | |
| 565 | REG0; |
| 566 | #endif |
| 567 | } |
| 568 | |
| 569 | /* |
| 570 | * Checks if this is a QLogic FAS 408 |
| 571 | */ |
| 572 | |
| 573 | int qlogicfas408_detect(int qbase, int int_type) |
| 574 | { |
| 575 | REG1; |
| 576 | return (((inb(qbase + 0xe) ^ inb(qbase + 0xe)) == 7) && |
| 577 | ((inb(qbase + 0xe) ^ inb(qbase + 0xe)) == 7)); |
| 578 | } |
| 579 | |
| 580 | /* |
| 581 | * Disable interrupts |
| 582 | */ |
| 583 | |
| 584 | void qlogicfas408_disable_ints(struct qlogicfas408_priv *priv) |
| 585 | { |
| 586 | int qbase = priv->qbase; |
| 587 | int int_type = priv->int_type; |
| 588 | |
| 589 | REG1; |
| 590 | outb(0, qbase + 0xb); /* disable ints */ |
| 591 | } |
| 592 | |
| 593 | /* |
| 594 | * Init and exit functions |
| 595 | */ |
| 596 | |
| 597 | static int __init qlogicfas408_init(void) |
| 598 | { |
| 599 | return 0; |
| 600 | } |
| 601 | |
| 602 | static void __exit qlogicfas408_exit(void) |
| 603 | { |
| 604 | |
| 605 | } |
| 606 | |
| 607 | MODULE_AUTHOR("Tom Zerucha, Michael Griffith"); |
| 608 | MODULE_DESCRIPTION("Driver for the Qlogic FAS SCSI controllers"); |
| 609 | MODULE_LICENSE("GPL"); |
| 610 | module_init(qlogicfas408_init); |
| 611 | module_exit(qlogicfas408_exit); |
| 612 | |
| 613 | EXPORT_SYMBOL(qlogicfas408_info); |
| 614 | EXPORT_SYMBOL(qlogicfas408_queuecommand); |
| 615 | EXPORT_SYMBOL(qlogicfas408_abort); |
| 616 | EXPORT_SYMBOL(qlogicfas408_bus_reset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | EXPORT_SYMBOL(qlogicfas408_biosparam); |
| 618 | EXPORT_SYMBOL(qlogicfas408_ihandl); |
| 619 | EXPORT_SYMBOL(qlogicfas408_get_chip_type); |
| 620 | EXPORT_SYMBOL(qlogicfas408_setup); |
| 621 | EXPORT_SYMBOL(qlogicfas408_detect); |
| 622 | EXPORT_SYMBOL(qlogicfas408_disable_ints); |
| 623 | |