Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $ |
| 2 | * linux/kernel/aha1542.c |
| 3 | * |
| 4 | * Copyright (C) 1992 Tommy Thorn |
| 5 | * Copyright (C) 1993, 1994, 1995 Eric Youngdale |
| 6 | * |
| 7 | * Modified by Eric Youngdale |
| 8 | * Use request_irq and request_dma to help prevent unexpected conflicts |
| 9 | * Set up on-board DMA controller, such that we do not have to |
| 10 | * have the bios enabled to use the aha1542. |
| 11 | * Modified by David Gentzel |
| 12 | * Don't call request_dma if dma mask is 0 (for BusLogic BT-445S VL-Bus |
| 13 | * controller). |
| 14 | * Modified by Matti Aarnio |
| 15 | * Accept parameters from LILO cmd-line. -- 1-Oct-94 |
| 16 | * Modified by Mike McLagan <mike.mclagan@linux.org> |
| 17 | * Recognise extended mode on AHA1542CP, different bit than 1542CF |
| 18 | * 1-Jan-97 |
| 19 | * Modified by Bjorn L. Thordarson and Einar Thor Einarsson |
| 20 | * Recognize that DMA0 is valid DMA channel -- 13-Jul-98 |
| 21 | * Modified by Chris Faulhaber <jedgar@fxp.org> |
| 22 | * Added module command-line options |
| 23 | * 19-Jul-99 |
| 24 | * Modified by Adam Fritzler <mid@auk.cx> |
| 25 | * Added proper detection of the AHA-1640 (MCA version of AHA-1540) |
| 26 | */ |
| 27 | |
| 28 | #include <linux/config.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/interrupt.h> |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/types.h> |
| 33 | #include <linux/string.h> |
| 34 | #include <linux/ioport.h> |
| 35 | #include <linux/delay.h> |
| 36 | #include <linux/proc_fs.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <linux/pci.h> |
| 40 | #include <linux/isapnp.h> |
| 41 | #include <linux/blkdev.h> |
| 42 | #include <linux/mca.h> |
| 43 | #include <linux/mca-legacy.h> |
| 44 | |
| 45 | #include <asm/dma.h> |
| 46 | #include <asm/system.h> |
| 47 | #include <asm/io.h> |
| 48 | |
| 49 | #include "scsi.h" |
| 50 | #include <scsi/scsi_host.h> |
| 51 | #include "aha1542.h" |
| 52 | |
| 53 | #define SCSI_BUF_PA(address) isa_virt_to_bus(address) |
| 54 | #define SCSI_SG_PA(sgent) (isa_page_to_bus((sgent)->page) + (sgent)->offset) |
| 55 | |
| 56 | static void BAD_DMA(void *address, unsigned int length) |
| 57 | { |
| 58 | printk(KERN_CRIT "buf vaddress %p paddress 0x%lx length %d\n", |
| 59 | address, |
| 60 | SCSI_BUF_PA(address), |
| 61 | length); |
| 62 | panic("Buffer at physical address > 16Mb used for aha1542"); |
| 63 | } |
| 64 | |
| 65 | static void BAD_SG_DMA(Scsi_Cmnd * SCpnt, |
| 66 | struct scatterlist *sgpnt, |
| 67 | int nseg, |
| 68 | int badseg) |
| 69 | { |
| 70 | printk(KERN_CRIT "sgpnt[%d:%d] page %p/0x%llx length %u\n", |
| 71 | badseg, nseg, |
| 72 | page_address(sgpnt[badseg].page) + sgpnt[badseg].offset, |
| 73 | (unsigned long long)SCSI_SG_PA(&sgpnt[badseg]), |
| 74 | sgpnt[badseg].length); |
| 75 | |
| 76 | /* |
| 77 | * Not safe to continue. |
| 78 | */ |
| 79 | panic("Buffer at physical address > 16Mb used for aha1542"); |
| 80 | } |
| 81 | |
| 82 | #include<linux/stat.h> |
| 83 | |
| 84 | #ifdef DEBUG |
| 85 | #define DEB(x) x |
| 86 | #else |
| 87 | #define DEB(x) |
| 88 | #endif |
| 89 | |
| 90 | /* |
| 91 | static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $"; |
| 92 | */ |
| 93 | |
| 94 | /* The adaptec can be configured for quite a number of addresses, but |
| 95 | I generally do not want the card poking around at random. We allow |
| 96 | two addresses - this allows people to use the Adaptec with a Midi |
| 97 | card, which also used 0x330 -- can be overridden with LILO! */ |
| 98 | |
| 99 | #define MAXBOARDS 4 /* Increase this and the sizes of the |
| 100 | arrays below, if you need more.. */ |
| 101 | |
| 102 | /* Boards 3,4 slots are reserved for ISAPnP/MCA scans */ |
| 103 | |
| 104 | static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0}; |
| 105 | |
| 106 | /* set by aha1542_setup according to the command line; they also may |
| 107 | be marked __initdata, but require zero initializers then */ |
| 108 | |
| 109 | static int setup_called[MAXBOARDS]; |
| 110 | static int setup_buson[MAXBOARDS]; |
| 111 | static int setup_busoff[MAXBOARDS]; |
| 112 | static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 }; |
| 113 | |
| 114 | /* |
| 115 | * LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]] |
| 116 | * |
| 117 | * Where: <PORTBASE> is any of the valid AHA addresses: |
| 118 | * 0x130, 0x134, 0x230, 0x234, 0x330, 0x334 |
| 119 | * <BUSON> is the time (in microsecs) that AHA spends on the AT-bus |
| 120 | * when transferring data. 1542A power-on default is 11us, |
| 121 | * valid values are in range: 2..15 (decimal) |
| 122 | * <BUSOFF> is the time that AHA spends OFF THE BUS after while |
| 123 | * it is transferring data (not to monopolize the bus). |
| 124 | * Power-on default is 4us, valid range: 1..64 microseconds. |
| 125 | * <DMASPEED> Default is jumper selected (1542A: on the J1), |
| 126 | * but experimenter can alter it with this. |
| 127 | * Valid values: 5, 6, 7, 8, 10 (MB/s) |
| 128 | * Factory default is 5 MB/s. |
| 129 | */ |
| 130 | |
| 131 | #if defined(MODULE) |
| 132 | static int isapnp = 0; |
| 133 | static int aha1542[] = {0x330, 11, 4, -1}; |
| 134 | module_param_array(aha1542, int, NULL, 0); |
| 135 | module_param(isapnp, bool, 0); |
| 136 | |
| 137 | static struct isapnp_device_id id_table[] __initdata = { |
| 138 | { |
| 139 | ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| 140 | ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542), |
| 141 | 0 |
| 142 | }, |
| 143 | {0} |
| 144 | }; |
| 145 | |
| 146 | MODULE_DEVICE_TABLE(isapnp, id_table); |
| 147 | |
| 148 | #else |
| 149 | static int isapnp = 1; |
| 150 | #endif |
| 151 | |
| 152 | #define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */ |
| 153 | #define BIOS_TRANSLATION_6432 1 /* Default case these days */ |
| 154 | #define BIOS_TRANSLATION_25563 2 /* Big disk case */ |
| 155 | |
| 156 | struct aha1542_hostdata { |
| 157 | /* This will effectively start both of them at the first mailbox */ |
| 158 | int bios_translation; /* Mapping bios uses - for compatibility */ |
| 159 | int aha1542_last_mbi_used; |
| 160 | int aha1542_last_mbo_used; |
| 161 | Scsi_Cmnd *SCint[AHA1542_MAILBOXES]; |
| 162 | struct mailbox mb[2 * AHA1542_MAILBOXES]; |
| 163 | struct ccb ccb[AHA1542_MAILBOXES]; |
| 164 | }; |
| 165 | |
| 166 | #define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata) |
| 167 | |
| 168 | static struct Scsi_Host *aha_host[7]; /* One for each IRQ level (9-15) */ |
| 169 | |
| 170 | static DEFINE_SPINLOCK(aha1542_lock); |
| 171 | |
| 172 | |
| 173 | |
| 174 | #define WAITnexttimeout 3000000 |
| 175 | |
| 176 | static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt); |
| 177 | static int aha1542_restart(struct Scsi_Host *shost); |
| 178 | static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id, struct pt_regs *regs); |
| 179 | static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id, |
| 180 | struct pt_regs *regs); |
| 181 | |
| 182 | #define aha1542_intr_reset(base) outb(IRST, CONTROL(base)) |
| 183 | |
| 184 | #define WAIT(port, mask, allof, noneof) \ |
| 185 | { register int WAITbits; \ |
| 186 | register int WAITtimeout = WAITnexttimeout; \ |
| 187 | while (1) { \ |
| 188 | WAITbits = inb(port) & (mask); \ |
| 189 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ |
| 190 | break; \ |
| 191 | if (--WAITtimeout == 0) goto fail; \ |
| 192 | } \ |
| 193 | } |
| 194 | |
| 195 | /* Similar to WAIT, except we use the udelay call to regulate the |
| 196 | amount of time we wait. */ |
| 197 | #define WAITd(port, mask, allof, noneof, timeout) \ |
| 198 | { register int WAITbits; \ |
| 199 | register int WAITtimeout = timeout; \ |
| 200 | while (1) { \ |
| 201 | WAITbits = inb(port) & (mask); \ |
| 202 | if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \ |
| 203 | break; \ |
| 204 | mdelay(1); \ |
| 205 | if (--WAITtimeout == 0) goto fail; \ |
| 206 | } \ |
| 207 | } |
| 208 | |
| 209 | static void aha1542_stat(void) |
| 210 | { |
| 211 | /* int s = inb(STATUS), i = inb(INTRFLAGS); |
| 212 | printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */ |
| 213 | } |
| 214 | |
| 215 | /* This is a bit complicated, but we need to make sure that an interrupt |
| 216 | routine does not send something out while we are in the middle of this. |
| 217 | Fortunately, it is only at boot time that multi-byte messages |
| 218 | are ever sent. */ |
| 219 | static int aha1542_out(unsigned int base, unchar * cmdp, int len) |
| 220 | { |
| 221 | unsigned long flags = 0; |
| 222 | int got_lock; |
| 223 | |
| 224 | if (len == 1) { |
| 225 | got_lock = 0; |
| 226 | while (1 == 1) { |
| 227 | WAIT(STATUS(base), CDF, 0, CDF); |
| 228 | spin_lock_irqsave(&aha1542_lock, flags); |
| 229 | if (inb(STATUS(base)) & CDF) { |
| 230 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 231 | continue; |
| 232 | } |
| 233 | outb(*cmdp, DATA(base)); |
| 234 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 235 | return 0; |
| 236 | } |
| 237 | } else { |
| 238 | spin_lock_irqsave(&aha1542_lock, flags); |
| 239 | got_lock = 1; |
| 240 | while (len--) { |
| 241 | WAIT(STATUS(base), CDF, 0, CDF); |
| 242 | outb(*cmdp++, DATA(base)); |
| 243 | } |
| 244 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 245 | } |
| 246 | return 0; |
| 247 | fail: |
| 248 | if (got_lock) |
| 249 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 250 | printk(KERN_ERR "aha1542_out failed(%d): ", len + 1); |
| 251 | aha1542_stat(); |
| 252 | return 1; |
| 253 | } |
| 254 | |
| 255 | /* Only used at boot time, so we do not need to worry about latency as much |
| 256 | here */ |
| 257 | |
| 258 | static int __init aha1542_in(unsigned int base, unchar * cmdp, int len) |
| 259 | { |
| 260 | unsigned long flags; |
| 261 | |
| 262 | spin_lock_irqsave(&aha1542_lock, flags); |
| 263 | while (len--) { |
| 264 | WAIT(STATUS(base), DF, DF, 0); |
| 265 | *cmdp++ = inb(DATA(base)); |
| 266 | } |
| 267 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 268 | return 0; |
| 269 | fail: |
| 270 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 271 | printk(KERN_ERR "aha1542_in failed(%d): ", len + 1); |
| 272 | aha1542_stat(); |
| 273 | return 1; |
| 274 | } |
| 275 | |
| 276 | /* Similar to aha1542_in, except that we wait a very short period of time. |
| 277 | We use this if we know the board is alive and awake, but we are not sure |
| 278 | if the board will respond to the command we are about to send or not */ |
| 279 | static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len) |
| 280 | { |
| 281 | unsigned long flags; |
| 282 | |
| 283 | spin_lock_irqsave(&aha1542_lock, flags); |
| 284 | while (len--) { |
| 285 | WAITd(STATUS(base), DF, DF, 0, 100); |
| 286 | *cmdp++ = inb(DATA(base)); |
| 287 | } |
| 288 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 289 | return 0; |
| 290 | fail: |
| 291 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 292 | return 1; |
| 293 | } |
| 294 | |
| 295 | static int makecode(unsigned hosterr, unsigned scsierr) |
| 296 | { |
| 297 | switch (hosterr) { |
| 298 | case 0x0: |
| 299 | case 0xa: /* Linked command complete without error and linked normally */ |
| 300 | case 0xb: /* Linked command complete without error, interrupt generated */ |
| 301 | hosterr = 0; |
| 302 | break; |
| 303 | |
| 304 | case 0x11: /* Selection time out-The initiator selection or target |
| 305 | reselection was not complete within the SCSI Time out period */ |
| 306 | hosterr = DID_TIME_OUT; |
| 307 | break; |
| 308 | |
| 309 | case 0x12: /* Data overrun/underrun-The target attempted to transfer more data |
| 310 | than was allocated by the Data Length field or the sum of the |
| 311 | Scatter / Gather Data Length fields. */ |
| 312 | |
| 313 | case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ |
| 314 | |
| 315 | case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was |
| 316 | invalid. This usually indicates a software failure. */ |
| 317 | |
| 318 | case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid. |
| 319 | This usually indicates a software failure. */ |
| 320 | |
| 321 | case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set |
| 322 | of linked CCB's does not specify the same logical unit number as |
| 323 | the first. */ |
| 324 | case 0x18: /* Invalid Target Direction received from Host-The direction of a |
| 325 | Target Mode CCB was invalid. */ |
| 326 | |
| 327 | case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was |
| 328 | received to service data transfer between the same target LUN |
| 329 | and initiator SCSI ID in the same direction. */ |
| 330 | |
| 331 | case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero |
| 332 | length segment or invalid segment list boundaries was received. |
| 333 | A CCB parameter was invalid. */ |
| 334 | DEB(printk("Aha1542: %x %x\n", hosterr, scsierr)); |
| 335 | hosterr = DID_ERROR; /* Couldn't find any better */ |
| 336 | break; |
| 337 | |
| 338 | case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus |
| 339 | phase sequence was requested by the target. The host adapter |
| 340 | will generate a SCSI Reset Condition, notifying the host with |
| 341 | a SCRD interrupt */ |
| 342 | hosterr = DID_RESET; |
| 343 | break; |
| 344 | default: |
| 345 | printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr); |
| 346 | break; |
| 347 | } |
| 348 | return scsierr | (hosterr << 16); |
| 349 | } |
| 350 | |
| 351 | static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt) |
| 352 | { |
| 353 | unchar inquiry_cmd[] = {CMD_INQUIRY}; |
| 354 | unchar inquiry_result[4]; |
| 355 | unchar *cmdp; |
| 356 | int len; |
| 357 | volatile int debug = 0; |
| 358 | |
| 359 | /* Quick and dirty test for presence of the card. */ |
| 360 | if (inb(STATUS(bse)) == 0xff) |
| 361 | return 0; |
| 362 | |
| 363 | /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */ |
| 364 | |
| 365 | /* DEB(printk("aha1542_test_port called \n")); */ |
| 366 | |
| 367 | /* In case some other card was probing here, reset interrupts */ |
| 368 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ |
| 369 | |
| 370 | outb(SRST | IRST /*|SCRST */ , CONTROL(bse)); |
| 371 | |
| 372 | mdelay(20); /* Wait a little bit for things to settle down. */ |
| 373 | |
| 374 | debug = 1; |
| 375 | /* Expect INIT and IDLE, any of the others are bad */ |
| 376 | WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
| 377 | |
| 378 | debug = 2; |
| 379 | /* Shouldn't have generated any interrupts during reset */ |
| 380 | if (inb(INTRFLAGS(bse)) & INTRMASK) |
| 381 | goto fail; |
| 382 | |
| 383 | |
| 384 | /* Perform a host adapter inquiry instead so we do not need to set |
| 385 | up the mailboxes ahead of time */ |
| 386 | |
| 387 | aha1542_out(bse, inquiry_cmd, 1); |
| 388 | |
| 389 | debug = 3; |
| 390 | len = 4; |
| 391 | cmdp = &inquiry_result[0]; |
| 392 | |
| 393 | while (len--) { |
| 394 | WAIT(STATUS(bse), DF, DF, 0); |
| 395 | *cmdp++ = inb(DATA(bse)); |
| 396 | } |
| 397 | |
| 398 | debug = 8; |
| 399 | /* Reading port should reset DF */ |
| 400 | if (inb(STATUS(bse)) & DF) |
| 401 | goto fail; |
| 402 | |
| 403 | debug = 9; |
| 404 | /* When HACC, command is completed, and we're though testing */ |
| 405 | WAIT(INTRFLAGS(bse), HACC, HACC, 0); |
| 406 | /* now initialize adapter */ |
| 407 | |
| 408 | debug = 10; |
| 409 | /* Clear interrupts */ |
| 410 | outb(IRST, CONTROL(bse)); |
| 411 | |
| 412 | debug = 11; |
| 413 | |
| 414 | return debug; /* 1 = ok */ |
| 415 | fail: |
| 416 | return 0; /* 0 = not ok */ |
| 417 | } |
| 418 | |
| 419 | /* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */ |
| 420 | static irqreturn_t do_aha1542_intr_handle(int irq, void *dev_id, |
| 421 | struct pt_regs *regs) |
| 422 | { |
| 423 | unsigned long flags; |
| 424 | struct Scsi_Host *shost; |
| 425 | |
| 426 | shost = aha_host[irq - 9]; |
| 427 | if (!shost) |
| 428 | panic("Splunge!"); |
| 429 | |
| 430 | spin_lock_irqsave(shost->host_lock, flags); |
| 431 | aha1542_intr_handle(shost, dev_id, regs); |
| 432 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 433 | return IRQ_HANDLED; |
| 434 | } |
| 435 | |
| 436 | /* A "high" level interrupt handler */ |
| 437 | static void aha1542_intr_handle(struct Scsi_Host *shost, void *dev_id, struct pt_regs *regs) |
| 438 | { |
| 439 | void (*my_done) (Scsi_Cmnd *) = NULL; |
| 440 | int errstatus, mbi, mbo, mbistatus; |
| 441 | int number_serviced; |
| 442 | unsigned long flags; |
| 443 | Scsi_Cmnd *SCtmp; |
| 444 | int flag; |
| 445 | int needs_restart; |
| 446 | struct mailbox *mb; |
| 447 | struct ccb *ccb; |
| 448 | |
| 449 | mb = HOSTDATA(shost)->mb; |
| 450 | ccb = HOSTDATA(shost)->ccb; |
| 451 | |
| 452 | #ifdef DEBUG |
| 453 | { |
| 454 | flag = inb(INTRFLAGS(shost->io_port)); |
| 455 | printk(KERN_DEBUG "aha1542_intr_handle: "); |
| 456 | if (!(flag & ANYINTR)) |
| 457 | printk("no interrupt?"); |
| 458 | if (flag & MBIF) |
| 459 | printk("MBIF "); |
| 460 | if (flag & MBOA) |
| 461 | printk("MBOF "); |
| 462 | if (flag & HACC) |
| 463 | printk("HACC "); |
| 464 | if (flag & SCRD) |
| 465 | printk("SCRD "); |
| 466 | printk("status %02x\n", inb(STATUS(shost->io_port))); |
| 467 | }; |
| 468 | #endif |
| 469 | number_serviced = 0; |
| 470 | needs_restart = 0; |
| 471 | |
| 472 | while (1 == 1) { |
| 473 | flag = inb(INTRFLAGS(shost->io_port)); |
| 474 | |
| 475 | /* Check for unusual interrupts. If any of these happen, we should |
| 476 | probably do something special, but for now just printing a message |
| 477 | is sufficient. A SCSI reset detected is something that we really |
| 478 | need to deal with in some way. */ |
| 479 | if (flag & ~MBIF) { |
| 480 | if (flag & MBOA) |
| 481 | printk("MBOF "); |
| 482 | if (flag & HACC) |
| 483 | printk("HACC "); |
| 484 | if (flag & SCRD) { |
| 485 | needs_restart = 1; |
| 486 | printk("SCRD "); |
| 487 | } |
| 488 | } |
| 489 | aha1542_intr_reset(shost->io_port); |
| 490 | |
| 491 | spin_lock_irqsave(&aha1542_lock, flags); |
| 492 | mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1; |
| 493 | if (mbi >= 2 * AHA1542_MAILBOXES) |
| 494 | mbi = AHA1542_MAILBOXES; |
| 495 | |
| 496 | do { |
| 497 | if (mb[mbi].status != 0) |
| 498 | break; |
| 499 | mbi++; |
| 500 | if (mbi >= 2 * AHA1542_MAILBOXES) |
| 501 | mbi = AHA1542_MAILBOXES; |
| 502 | } while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used); |
| 503 | |
| 504 | if (mb[mbi].status == 0) { |
| 505 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 506 | /* Hmm, no mail. Must have read it the last time around */ |
| 507 | if (!number_serviced && !needs_restart) |
| 508 | printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n"); |
| 509 | /* We detected a reset. Restart all pending commands for |
| 510 | devices that use the hard reset option */ |
| 511 | if (needs_restart) |
| 512 | aha1542_restart(shost); |
| 513 | return; |
| 514 | }; |
| 515 | |
| 516 | mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb); |
| 517 | mbistatus = mb[mbi].status; |
| 518 | mb[mbi].status = 0; |
| 519 | HOSTDATA(shost)->aha1542_last_mbi_used = mbi; |
| 520 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 521 | |
| 522 | #ifdef DEBUG |
| 523 | { |
| 524 | if (ccb[mbo].tarstat | ccb[mbo].hastat) |
| 525 | printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n", |
| 526 | ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status); |
| 527 | }; |
| 528 | #endif |
| 529 | |
| 530 | if (mbistatus == 3) |
| 531 | continue; /* Aborted command not found */ |
| 532 | |
| 533 | #ifdef DEBUG |
| 534 | printk(KERN_DEBUG "...done %d %d\n", mbo, mbi); |
| 535 | #endif |
| 536 | |
| 537 | SCtmp = HOSTDATA(shost)->SCint[mbo]; |
| 538 | |
| 539 | if (!SCtmp || !SCtmp->scsi_done) { |
| 540 | printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n"); |
| 541 | printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat, |
| 542 | ccb[mbo].hastat, ccb[mbo].idlun, mbo); |
| 543 | return; |
| 544 | } |
| 545 | my_done = SCtmp->scsi_done; |
| 546 | if (SCtmp->host_scribble) { |
| 547 | kfree(SCtmp->host_scribble); |
| 548 | SCtmp->host_scribble = NULL; |
| 549 | } |
| 550 | /* Fetch the sense data, and tuck it away, in the required slot. The |
| 551 | Adaptec automatically fetches it, and there is no guarantee that |
| 552 | we will still have it in the cdb when we come back */ |
| 553 | if (ccb[mbo].tarstat == 2) |
| 554 | memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen], |
| 555 | sizeof(SCtmp->sense_buffer)); |
| 556 | |
| 557 | |
| 558 | /* is there mail :-) */ |
| 559 | |
| 560 | /* more error checking left out here */ |
| 561 | if (mbistatus != 1) |
| 562 | /* This is surely wrong, but I don't know what's right */ |
| 563 | errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat); |
| 564 | else |
| 565 | errstatus = 0; |
| 566 | |
| 567 | #ifdef DEBUG |
| 568 | if (errstatus) |
| 569 | printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus, |
| 570 | ccb[mbo].hastat, ccb[mbo].tarstat); |
| 571 | #endif |
| 572 | |
| 573 | if (ccb[mbo].tarstat == 2) { |
| 574 | #ifdef DEBUG |
| 575 | int i; |
| 576 | #endif |
| 577 | DEB(printk("aha1542_intr_handle: sense:")); |
| 578 | #ifdef DEBUG |
| 579 | for (i = 0; i < 12; i++) |
| 580 | printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]); |
| 581 | printk("\n"); |
| 582 | #endif |
| 583 | /* |
| 584 | DEB(printk("aha1542_intr_handle: buf:")); |
| 585 | for (i = 0; i < bufflen; i++) |
| 586 | printk("%02x ", ((unchar *)buff)[i]); |
| 587 | printk("\n"); |
| 588 | */ |
| 589 | } |
| 590 | DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus)); |
| 591 | SCtmp->result = errstatus; |
| 592 | HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as |
| 593 | far as queuecommand is concerned */ |
| 594 | my_done(SCtmp); |
| 595 | number_serviced++; |
| 596 | }; |
| 597 | } |
| 598 | |
| 599 | static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *)) |
| 600 | { |
| 601 | unchar ahacmd = CMD_START_SCSI; |
| 602 | unchar direction; |
| 603 | unchar *cmd = (unchar *) SCpnt->cmnd; |
| 604 | unchar target = SCpnt->device->id; |
| 605 | unchar lun = SCpnt->device->lun; |
| 606 | unsigned long flags; |
| 607 | void *buff = SCpnt->request_buffer; |
| 608 | int bufflen = SCpnt->request_bufflen; |
| 609 | int mbo; |
| 610 | struct mailbox *mb; |
| 611 | struct ccb *ccb; |
| 612 | |
| 613 | DEB(int i); |
| 614 | |
| 615 | mb = HOSTDATA(SCpnt->device->host)->mb; |
| 616 | ccb = HOSTDATA(SCpnt->device->host)->ccb; |
| 617 | |
| 618 | DEB(if (target > 1) { |
| 619 | SCpnt->result = DID_TIME_OUT << 16; |
| 620 | done(SCpnt); return 0; |
| 621 | } |
| 622 | ); |
| 623 | |
| 624 | if (*cmd == REQUEST_SENSE) { |
| 625 | /* Don't do the command - we have the sense data already */ |
| 626 | #if 0 |
| 627 | /* scsi_request_sense() provides a buffer of size 256, |
| 628 | so there is no reason to expect equality */ |
| 629 | if (bufflen != sizeof(SCpnt->sense_buffer)) |
| 630 | printk(KERN_CRIT "aha1542: Wrong buffer length supplied " |
| 631 | "for request sense (%d)\n", bufflen); |
| 632 | #endif |
| 633 | SCpnt->result = 0; |
| 634 | done(SCpnt); |
| 635 | return 0; |
| 636 | } |
| 637 | #ifdef DEBUG |
| 638 | if (*cmd == READ_10 || *cmd == WRITE_10) |
| 639 | i = xscsi2int(cmd + 2); |
| 640 | else if (*cmd == READ_6 || *cmd == WRITE_6) |
| 641 | i = scsi2int(cmd + 2); |
| 642 | else |
| 643 | i = -1; |
| 644 | if (done) |
| 645 | printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); |
| 646 | else |
| 647 | printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen); |
| 648 | aha1542_stat(); |
| 649 | printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:"); |
| 650 | for (i = 0; i < SCpnt->cmd_len; i++) |
| 651 | printk("%02x ", cmd[i]); |
| 652 | printk("\n"); |
| 653 | if (*cmd == WRITE_10 || *cmd == WRITE_6) |
| 654 | return 0; /* we are still testing, so *don't* write */ |
| 655 | #endif |
| 656 | /* Use the outgoing mailboxes in a round-robin fashion, because this |
| 657 | is how the host adapter will scan for them */ |
| 658 | |
| 659 | spin_lock_irqsave(&aha1542_lock, flags); |
| 660 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; |
| 661 | if (mbo >= AHA1542_MAILBOXES) |
| 662 | mbo = 0; |
| 663 | |
| 664 | do { |
| 665 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) |
| 666 | break; |
| 667 | mbo++; |
| 668 | if (mbo >= AHA1542_MAILBOXES) |
| 669 | mbo = 0; |
| 670 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); |
| 671 | |
| 672 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) |
| 673 | panic("Unable to find empty mailbox for aha1542.\n"); |
| 674 | |
| 675 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from |
| 676 | screwing with this cdb. */ |
| 677 | |
| 678 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; |
| 679 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 680 | |
| 681 | #ifdef DEBUG |
| 682 | printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done); |
| 683 | #endif |
| 684 | |
| 685 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ |
| 686 | |
| 687 | memset(&ccb[mbo], 0, sizeof(struct ccb)); |
| 688 | |
| 689 | ccb[mbo].cdblen = SCpnt->cmd_len; |
| 690 | |
| 691 | direction = 0; |
| 692 | if (*cmd == READ_10 || *cmd == READ_6) |
| 693 | direction = 8; |
| 694 | else if (*cmd == WRITE_10 || *cmd == WRITE_6) |
| 695 | direction = 16; |
| 696 | |
| 697 | memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen); |
| 698 | |
| 699 | if (SCpnt->use_sg) { |
| 700 | struct scatterlist *sgpnt; |
| 701 | struct chain *cptr; |
| 702 | #ifdef DEBUG |
| 703 | unsigned char *ptr; |
| 704 | #endif |
| 705 | int i; |
| 706 | ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ |
| 707 | SCpnt->host_scribble = (unsigned char *) kmalloc(512, GFP_KERNEL | GFP_DMA); |
| 708 | sgpnt = (struct scatterlist *) SCpnt->request_buffer; |
| 709 | cptr = (struct chain *) SCpnt->host_scribble; |
| 710 | if (cptr == NULL) { |
| 711 | /* free the claimed mailbox slot */ |
| 712 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL; |
| 713 | return SCSI_MLQUEUE_HOST_BUSY; |
| 714 | } |
| 715 | for (i = 0; i < SCpnt->use_sg; i++) { |
| 716 | if (sgpnt[i].length == 0 || SCpnt->use_sg > 16 || |
| 717 | (((int) sgpnt[i].offset) & 1) || (sgpnt[i].length & 1)) { |
| 718 | unsigned char *ptr; |
| 719 | printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i); |
| 720 | for (i = 0; i < SCpnt->use_sg; i++) { |
| 721 | printk(KERN_CRIT "%d: %p %d\n", i, |
| 722 | (page_address(sgpnt[i].page) + |
| 723 | sgpnt[i].offset), |
| 724 | sgpnt[i].length); |
| 725 | }; |
| 726 | printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr); |
| 727 | ptr = (unsigned char *) &cptr[i]; |
| 728 | for (i = 0; i < 18; i++) |
| 729 | printk("%02x ", ptr[i]); |
| 730 | panic("Foooooooood fight!"); |
| 731 | }; |
| 732 | any2scsi(cptr[i].dataptr, SCSI_SG_PA(&sgpnt[i])); |
| 733 | if (SCSI_SG_PA(&sgpnt[i]) + sgpnt[i].length - 1 > ISA_DMA_THRESHOLD) |
| 734 | BAD_SG_DMA(SCpnt, sgpnt, SCpnt->use_sg, i); |
| 735 | any2scsi(cptr[i].datalen, sgpnt[i].length); |
| 736 | }; |
| 737 | any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain)); |
| 738 | any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr)); |
| 739 | #ifdef DEBUG |
| 740 | printk("cptr %x: ", cptr); |
| 741 | ptr = (unsigned char *) cptr; |
| 742 | for (i = 0; i < 18; i++) |
| 743 | printk("%02x ", ptr[i]); |
| 744 | #endif |
| 745 | } else { |
| 746 | ccb[mbo].op = 0; /* SCSI Initiator Command */ |
| 747 | SCpnt->host_scribble = NULL; |
| 748 | any2scsi(ccb[mbo].datalen, bufflen); |
| 749 | if (buff && SCSI_BUF_PA(buff + bufflen - 1) > ISA_DMA_THRESHOLD) |
| 750 | BAD_DMA(buff, bufflen); |
| 751 | any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(buff)); |
| 752 | }; |
| 753 | ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */ |
| 754 | ccb[mbo].rsalen = 16; |
| 755 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; |
| 756 | ccb[mbo].commlinkid = 0; |
| 757 | |
| 758 | #ifdef DEBUG |
| 759 | { |
| 760 | int i; |
| 761 | printk(KERN_DEBUG "aha1542_command: sending.. "); |
| 762 | for (i = 0; i < sizeof(ccb[mbo]) - 10; i++) |
| 763 | printk("%02x ", ((unchar *) & ccb[mbo])[i]); |
| 764 | }; |
| 765 | #endif |
| 766 | |
| 767 | if (done) { |
| 768 | DEB(printk("aha1542_queuecommand: now waiting for interrupt "); |
| 769 | aha1542_stat()); |
| 770 | SCpnt->scsi_done = done; |
| 771 | mb[mbo].status = 1; |
| 772 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */ |
| 773 | DEB(aha1542_stat()); |
| 774 | } else |
| 775 | printk("aha1542_queuecommand: done can't be NULL\n"); |
| 776 | |
| 777 | return 0; |
| 778 | } |
| 779 | |
| 780 | /* Initialize mailboxes */ |
| 781 | static void setup_mailboxes(int bse, struct Scsi_Host *shpnt) |
| 782 | { |
| 783 | int i; |
| 784 | struct mailbox *mb; |
| 785 | struct ccb *ccb; |
| 786 | |
| 787 | unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0}; |
| 788 | |
| 789 | mb = HOSTDATA(shpnt)->mb; |
| 790 | ccb = HOSTDATA(shpnt)->ccb; |
| 791 | |
| 792 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
| 793 | mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0; |
| 794 | any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i])); |
| 795 | }; |
| 796 | aha1542_intr_reset(bse); /* reset interrupts, so they don't block */ |
| 797 | any2scsi((cmd + 2), SCSI_BUF_PA(mb)); |
| 798 | aha1542_out(bse, cmd, 5); |
| 799 | WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0); |
| 800 | while (0) { |
| 801 | fail: |
| 802 | printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n"); |
| 803 | } |
| 804 | aha1542_intr_reset(bse); |
| 805 | } |
| 806 | |
| 807 | static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id) |
| 808 | { |
| 809 | unchar inquiry_cmd[] = {CMD_RETCONF}; |
| 810 | unchar inquiry_result[3]; |
| 811 | int i; |
| 812 | i = inb(STATUS(base_io)); |
| 813 | if (i & DF) { |
| 814 | i = inb(DATA(base_io)); |
| 815 | }; |
| 816 | aha1542_out(base_io, inquiry_cmd, 1); |
| 817 | aha1542_in(base_io, inquiry_result, 3); |
| 818 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
| 819 | while (0) { |
| 820 | fail: |
| 821 | printk(KERN_ERR "aha1542_detect: query board settings\n"); |
| 822 | } |
| 823 | aha1542_intr_reset(base_io); |
| 824 | switch (inquiry_result[0]) { |
| 825 | case 0x80: |
| 826 | *dma_chan = 7; |
| 827 | break; |
| 828 | case 0x40: |
| 829 | *dma_chan = 6; |
| 830 | break; |
| 831 | case 0x20: |
| 832 | *dma_chan = 5; |
| 833 | break; |
| 834 | case 0x01: |
| 835 | *dma_chan = 0; |
| 836 | break; |
| 837 | case 0: |
| 838 | /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel. |
| 839 | Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */ |
| 840 | *dma_chan = 0xFF; |
| 841 | break; |
| 842 | default: |
| 843 | printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n"); |
| 844 | return -1; |
| 845 | }; |
| 846 | switch (inquiry_result[1]) { |
| 847 | case 0x40: |
| 848 | *irq_level = 15; |
| 849 | break; |
| 850 | case 0x20: |
| 851 | *irq_level = 14; |
| 852 | break; |
| 853 | case 0x8: |
| 854 | *irq_level = 12; |
| 855 | break; |
| 856 | case 0x4: |
| 857 | *irq_level = 11; |
| 858 | break; |
| 859 | case 0x2: |
| 860 | *irq_level = 10; |
| 861 | break; |
| 862 | case 0x1: |
| 863 | *irq_level = 9; |
| 864 | break; |
| 865 | default: |
| 866 | printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n"); |
| 867 | return -1; |
| 868 | }; |
| 869 | *scsi_id = inquiry_result[2] & 7; |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | /* This function should only be called for 1542C boards - we can detect |
| 874 | the special firmware settings and unlock the board */ |
| 875 | |
| 876 | static int __init aha1542_mbenable(int base) |
| 877 | { |
| 878 | static unchar mbenable_cmd[3]; |
| 879 | static unchar mbenable_result[2]; |
| 880 | int retval; |
| 881 | |
| 882 | retval = BIOS_TRANSLATION_6432; |
| 883 | |
| 884 | mbenable_cmd[0] = CMD_EXTBIOS; |
| 885 | aha1542_out(base, mbenable_cmd, 1); |
| 886 | if (aha1542_in1(base, mbenable_result, 2)) |
| 887 | return retval; |
| 888 | WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100); |
| 889 | aha1542_intr_reset(base); |
| 890 | |
| 891 | if ((mbenable_result[0] & 0x08) || mbenable_result[1]) { |
| 892 | mbenable_cmd[0] = CMD_MBENABLE; |
| 893 | mbenable_cmd[1] = 0; |
| 894 | mbenable_cmd[2] = mbenable_result[1]; |
| 895 | |
| 896 | if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03)) |
| 897 | retval = BIOS_TRANSLATION_25563; |
| 898 | |
| 899 | aha1542_out(base, mbenable_cmd, 3); |
| 900 | WAIT(INTRFLAGS(base), INTRMASK, HACC, 0); |
| 901 | }; |
| 902 | while (0) { |
| 903 | fail: |
| 904 | printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n"); |
| 905 | } |
| 906 | aha1542_intr_reset(base); |
| 907 | return retval; |
| 908 | } |
| 909 | |
| 910 | /* Query the board to find out if it is a 1542 or a 1740, or whatever. */ |
| 911 | static int __init aha1542_query(int base_io, int *transl) |
| 912 | { |
| 913 | unchar inquiry_cmd[] = {CMD_INQUIRY}; |
| 914 | unchar inquiry_result[4]; |
| 915 | int i; |
| 916 | i = inb(STATUS(base_io)); |
| 917 | if (i & DF) { |
| 918 | i = inb(DATA(base_io)); |
| 919 | }; |
| 920 | aha1542_out(base_io, inquiry_cmd, 1); |
| 921 | aha1542_in(base_io, inquiry_result, 4); |
| 922 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
| 923 | while (0) { |
| 924 | fail: |
| 925 | printk(KERN_ERR "aha1542_detect: query card type\n"); |
| 926 | } |
| 927 | aha1542_intr_reset(base_io); |
| 928 | |
| 929 | *transl = BIOS_TRANSLATION_6432; /* Default case */ |
| 930 | |
| 931 | /* For an AHA1740 series board, we ignore the board since there is a |
| 932 | hardware bug which can lead to wrong blocks being returned if the board |
| 933 | is operating in the 1542 emulation mode. Since there is an extended mode |
| 934 | driver, we simply ignore the board and let the 1740 driver pick it up. |
| 935 | */ |
| 936 | |
| 937 | if (inquiry_result[0] == 0x43) { |
| 938 | printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n"); |
| 939 | return 1; |
| 940 | }; |
| 941 | |
| 942 | /* Always call this - boards that do not support extended bios translation |
| 943 | will ignore the command, and we will set the proper default */ |
| 944 | |
| 945 | *transl = aha1542_mbenable(base_io); |
| 946 | |
| 947 | return 0; |
| 948 | } |
| 949 | |
| 950 | #ifndef MODULE |
| 951 | static char *setup_str[MAXBOARDS] __initdata; |
| 952 | static int setup_idx = 0; |
| 953 | |
| 954 | static void __init aha1542_setup(char *str, int *ints) |
| 955 | { |
| 956 | const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n"; |
| 957 | int setup_portbase; |
| 958 | |
| 959 | if (setup_idx >= MAXBOARDS) { |
| 960 | printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n"); |
| 961 | printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]); |
| 962 | printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]); |
| 963 | printk(KERN_ERR " This line: %s\n", str); |
| 964 | return; |
| 965 | } |
| 966 | if (ints[0] < 1 || ints[0] > 4) { |
| 967 | printk(KERN_ERR "aha1542: %s\n", str); |
| 968 | printk(ahausage); |
| 969 | printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n"); |
| 970 | } |
| 971 | setup_called[setup_idx] = ints[0]; |
| 972 | setup_str[setup_idx] = str; |
| 973 | |
| 974 | setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */ |
| 975 | setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7; |
| 976 | setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5; |
| 977 | if (ints[0] >= 4) |
| 978 | { |
| 979 | int atbt = -1; |
| 980 | switch (ints[4]) { |
| 981 | case 5: |
| 982 | atbt = 0x00; |
| 983 | break; |
| 984 | case 6: |
| 985 | atbt = 0x04; |
| 986 | break; |
| 987 | case 7: |
| 988 | atbt = 0x01; |
| 989 | break; |
| 990 | case 8: |
| 991 | atbt = 0x02; |
| 992 | break; |
| 993 | case 10: |
| 994 | atbt = 0x03; |
| 995 | break; |
| 996 | default: |
| 997 | printk(KERN_ERR "aha1542: %s\n", str); |
| 998 | printk(ahausage); |
| 999 | printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n"); |
| 1000 | break; |
| 1001 | } |
| 1002 | setup_dmaspeed[setup_idx] = atbt; |
| 1003 | } |
| 1004 | if (setup_portbase != 0) |
| 1005 | bases[setup_idx] = setup_portbase; |
| 1006 | |
| 1007 | ++setup_idx; |
| 1008 | } |
| 1009 | |
| 1010 | static int __init do_setup(char *str) |
| 1011 | { |
| 1012 | int ints[5]; |
| 1013 | |
| 1014 | int count=setup_idx; |
| 1015 | |
| 1016 | get_options(str, sizeof(ints)/sizeof(int), ints); |
| 1017 | aha1542_setup(str,ints); |
| 1018 | |
| 1019 | return count<setup_idx; |
| 1020 | } |
| 1021 | |
| 1022 | __setup("aha1542=",do_setup); |
| 1023 | #endif |
| 1024 | |
| 1025 | /* return non-zero on detection */ |
| 1026 | static int __init aha1542_detect(Scsi_Host_Template * tpnt) |
| 1027 | { |
| 1028 | unsigned char dma_chan; |
| 1029 | unsigned char irq_level; |
| 1030 | unsigned char scsi_id; |
| 1031 | unsigned long flags; |
| 1032 | unsigned int base_io; |
| 1033 | int trans; |
| 1034 | struct Scsi_Host *shpnt = NULL; |
| 1035 | int count = 0; |
| 1036 | int indx; |
| 1037 | |
| 1038 | DEB(printk("aha1542_detect: \n")); |
| 1039 | |
| 1040 | tpnt->proc_name = "aha1542"; |
| 1041 | |
| 1042 | #ifdef MODULE |
| 1043 | bases[0] = aha1542[0]; |
| 1044 | setup_buson[0] = aha1542[1]; |
| 1045 | setup_busoff[0] = aha1542[2]; |
| 1046 | { |
| 1047 | int atbt = -1; |
| 1048 | switch (aha1542[3]) { |
| 1049 | case 5: |
| 1050 | atbt = 0x00; |
| 1051 | break; |
| 1052 | case 6: |
| 1053 | atbt = 0x04; |
| 1054 | break; |
| 1055 | case 7: |
| 1056 | atbt = 0x01; |
| 1057 | break; |
| 1058 | case 8: |
| 1059 | atbt = 0x02; |
| 1060 | break; |
| 1061 | case 10: |
| 1062 | atbt = 0x03; |
| 1063 | break; |
| 1064 | }; |
| 1065 | setup_dmaspeed[0] = atbt; |
| 1066 | } |
| 1067 | #endif |
| 1068 | |
| 1069 | /* |
| 1070 | * Find MicroChannel cards (AHA1640) |
| 1071 | */ |
| 1072 | #ifdef CONFIG_MCA_LEGACY |
| 1073 | if(MCA_bus) { |
| 1074 | int slot = 0; |
| 1075 | int pos = 0; |
| 1076 | |
| 1077 | for (indx = 0; (slot != MCA_NOTFOUND) && |
| 1078 | (indx < sizeof(bases)/sizeof(bases[0])); indx++) { |
| 1079 | |
| 1080 | if (bases[indx]) |
| 1081 | continue; |
| 1082 | |
| 1083 | /* Detect only AHA-1640 cards -- MCA ID 0F1F */ |
| 1084 | slot = mca_find_unused_adapter(0x0f1f, slot); |
| 1085 | if (slot == MCA_NOTFOUND) |
| 1086 | break; |
| 1087 | |
| 1088 | |
| 1089 | /* Found one */ |
| 1090 | pos = mca_read_stored_pos(slot, 3); |
| 1091 | |
| 1092 | /* Decode address */ |
| 1093 | if (pos & 0x80) { |
| 1094 | if (pos & 0x02) { |
| 1095 | if (pos & 0x01) |
| 1096 | bases[indx] = 0x334; |
| 1097 | else |
| 1098 | bases[indx] = 0x234; |
| 1099 | } else { |
| 1100 | if (pos & 0x01) |
| 1101 | bases[indx] = 0x134; |
| 1102 | } |
| 1103 | } else { |
| 1104 | if (pos & 0x02) { |
| 1105 | if (pos & 0x01) |
| 1106 | bases[indx] = 0x330; |
| 1107 | else |
| 1108 | bases[indx] = 0x230; |
| 1109 | } else { |
| 1110 | if (pos & 0x01) |
| 1111 | bases[indx] = 0x130; |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | /* No need to decode IRQ and Arb level -- those are |
| 1116 | * read off the card later. |
| 1117 | */ |
| 1118 | printk(KERN_INFO "Found an AHA-1640 in MCA slot %d, I/O 0x%04x\n", slot, bases[indx]); |
| 1119 | |
| 1120 | mca_set_adapter_name(slot, "Adapter AHA-1640"); |
| 1121 | mca_set_adapter_procfn(slot, NULL, NULL); |
| 1122 | mca_mark_as_used(slot); |
| 1123 | |
| 1124 | /* Go on */ |
| 1125 | slot++; |
| 1126 | } |
| 1127 | |
| 1128 | } |
| 1129 | #endif |
| 1130 | |
| 1131 | /* |
| 1132 | * Hunt for ISA Plug'n'Pray Adaptecs (AHA1535) |
| 1133 | */ |
| 1134 | |
| 1135 | if(isapnp) |
| 1136 | { |
| 1137 | struct pnp_dev *pdev = NULL; |
| 1138 | for(indx = 0; indx <sizeof(bases)/sizeof(bases[0]);indx++) |
| 1139 | { |
| 1140 | if(bases[indx]) |
| 1141 | continue; |
| 1142 | pdev = pnp_find_dev(NULL, ISAPNP_VENDOR('A', 'D', 'P'), |
| 1143 | ISAPNP_FUNCTION(0x1542), pdev); |
| 1144 | if(pdev==NULL) |
| 1145 | break; |
| 1146 | /* |
| 1147 | * Activate the PnP card |
| 1148 | */ |
| 1149 | |
| 1150 | if(pnp_device_attach(pdev)<0) |
| 1151 | continue; |
| 1152 | |
| 1153 | if(pnp_activate_dev(pdev)<0) { |
| 1154 | pnp_device_detach(pdev); |
| 1155 | continue; |
| 1156 | } |
| 1157 | |
| 1158 | if(!pnp_port_valid(pdev, 0)) { |
| 1159 | pnp_device_detach(pdev); |
| 1160 | continue; |
| 1161 | } |
| 1162 | |
| 1163 | bases[indx] = pnp_port_start(pdev, 0); |
| 1164 | |
| 1165 | /* The card can be queried for its DMA, we have |
| 1166 | the DMA set up that is enough */ |
| 1167 | |
| 1168 | printk(KERN_INFO "ISAPnP found an AHA1535 at I/O 0x%03X\n", bases[indx]); |
| 1169 | } |
| 1170 | } |
| 1171 | for (indx = 0; indx < sizeof(bases) / sizeof(bases[0]); indx++) |
| 1172 | if (bases[indx] != 0 && request_region(bases[indx], 4, "aha1542")) { |
| 1173 | shpnt = scsi_register(tpnt, |
| 1174 | sizeof(struct aha1542_hostdata)); |
| 1175 | |
| 1176 | if(shpnt==NULL) { |
| 1177 | release_region(bases[indx], 4); |
| 1178 | continue; |
| 1179 | } |
| 1180 | /* For now we do this - until kmalloc is more intelligent |
| 1181 | we are resigned to stupid hacks like this */ |
| 1182 | if (SCSI_BUF_PA(shpnt) >= ISA_DMA_THRESHOLD) { |
| 1183 | printk(KERN_ERR "Invalid address for shpnt with 1542.\n"); |
| 1184 | goto unregister; |
| 1185 | } |
| 1186 | if (!aha1542_test_port(bases[indx], shpnt)) |
| 1187 | goto unregister; |
| 1188 | |
| 1189 | |
| 1190 | base_io = bases[indx]; |
| 1191 | |
| 1192 | /* Set the Bus on/off-times as not to ruin floppy performance */ |
| 1193 | { |
| 1194 | unchar oncmd[] = {CMD_BUSON_TIME, 7}; |
| 1195 | unchar offcmd[] = {CMD_BUSOFF_TIME, 5}; |
| 1196 | |
| 1197 | if (setup_called[indx]) { |
| 1198 | oncmd[1] = setup_buson[indx]; |
| 1199 | offcmd[1] = setup_busoff[indx]; |
| 1200 | } |
| 1201 | aha1542_intr_reset(base_io); |
| 1202 | aha1542_out(base_io, oncmd, 2); |
| 1203 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
| 1204 | aha1542_intr_reset(base_io); |
| 1205 | aha1542_out(base_io, offcmd, 2); |
| 1206 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
| 1207 | if (setup_dmaspeed[indx] >= 0) { |
| 1208 | unchar dmacmd[] = {CMD_DMASPEED, 0}; |
| 1209 | dmacmd[1] = setup_dmaspeed[indx]; |
| 1210 | aha1542_intr_reset(base_io); |
| 1211 | aha1542_out(base_io, dmacmd, 2); |
| 1212 | WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0); |
| 1213 | } |
| 1214 | while (0) { |
| 1215 | fail: |
| 1216 | printk(KERN_ERR "aha1542_detect: setting bus on/off-time failed\n"); |
| 1217 | } |
| 1218 | aha1542_intr_reset(base_io); |
| 1219 | } |
| 1220 | if (aha1542_query(base_io, &trans)) |
| 1221 | goto unregister; |
| 1222 | |
| 1223 | if (aha1542_getconfig(base_io, &irq_level, &dma_chan, &scsi_id) == -1) |
| 1224 | goto unregister; |
| 1225 | |
| 1226 | printk(KERN_INFO "Configuring Adaptec (SCSI-ID %d) at IO:%x, IRQ %d", scsi_id, base_io, irq_level); |
| 1227 | if (dma_chan != 0xFF) |
| 1228 | printk(", DMA priority %d", dma_chan); |
| 1229 | printk("\n"); |
| 1230 | |
| 1231 | DEB(aha1542_stat()); |
| 1232 | setup_mailboxes(base_io, shpnt); |
| 1233 | |
| 1234 | DEB(aha1542_stat()); |
| 1235 | |
| 1236 | DEB(printk("aha1542_detect: enable interrupt channel %d\n", irq_level)); |
| 1237 | spin_lock_irqsave(&aha1542_lock, flags); |
| 1238 | if (request_irq(irq_level, do_aha1542_intr_handle, 0, "aha1542", NULL)) { |
| 1239 | printk(KERN_ERR "Unable to allocate IRQ for adaptec controller.\n"); |
| 1240 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1241 | goto unregister; |
| 1242 | } |
| 1243 | if (dma_chan != 0xFF) { |
| 1244 | if (request_dma(dma_chan, "aha1542")) { |
| 1245 | printk(KERN_ERR "Unable to allocate DMA channel for Adaptec.\n"); |
| 1246 | free_irq(irq_level, NULL); |
| 1247 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1248 | goto unregister; |
| 1249 | } |
| 1250 | if (dma_chan == 0 || dma_chan >= 5) { |
| 1251 | set_dma_mode(dma_chan, DMA_MODE_CASCADE); |
| 1252 | enable_dma(dma_chan); |
| 1253 | } |
| 1254 | } |
| 1255 | aha_host[irq_level - 9] = shpnt; |
| 1256 | shpnt->this_id = scsi_id; |
| 1257 | shpnt->unique_id = base_io; |
| 1258 | shpnt->io_port = base_io; |
| 1259 | shpnt->n_io_port = 4; /* Number of bytes of I/O space used */ |
| 1260 | shpnt->dma_channel = dma_chan; |
| 1261 | shpnt->irq = irq_level; |
| 1262 | HOSTDATA(shpnt)->bios_translation = trans; |
| 1263 | if (trans == BIOS_TRANSLATION_25563) |
| 1264 | printk(KERN_INFO "aha1542.c: Using extended bios translation\n"); |
| 1265 | HOSTDATA(shpnt)->aha1542_last_mbi_used = (2 * AHA1542_MAILBOXES - 1); |
| 1266 | HOSTDATA(shpnt)->aha1542_last_mbo_used = (AHA1542_MAILBOXES - 1); |
| 1267 | memset(HOSTDATA(shpnt)->SCint, 0, sizeof(HOSTDATA(shpnt)->SCint)); |
| 1268 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1269 | #if 0 |
| 1270 | DEB(printk(" *** READ CAPACITY ***\n")); |
| 1271 | |
| 1272 | { |
| 1273 | unchar buf[8]; |
| 1274 | static unchar cmd[] = { READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 1275 | int i; |
| 1276 | |
| 1277 | for (i = 0; i < sizeof(buf); ++i) |
| 1278 | buf[i] = 0x87; |
| 1279 | for (i = 0; i < 2; ++i) |
| 1280 | if (!aha1542_command(i, cmd, buf, sizeof(buf))) { |
| 1281 | printk(KERN_DEBUG "aha_detect: LU %d sector_size %d device_size %d\n", |
| 1282 | i, xscsi2int(buf + 4), xscsi2int(buf)); |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | DEB(printk(" *** NOW RUNNING MY OWN TEST *** \n")); |
| 1287 | |
| 1288 | for (i = 0; i < 4; ++i) { |
| 1289 | unsigned char cmd[10]; |
| 1290 | static buffer[512]; |
| 1291 | |
| 1292 | cmd[0] = READ_10; |
| 1293 | cmd[1] = 0; |
| 1294 | xany2scsi(cmd + 2, i); |
| 1295 | cmd[6] = 0; |
| 1296 | cmd[7] = 0; |
| 1297 | cmd[8] = 1; |
| 1298 | cmd[9] = 0; |
| 1299 | aha1542_command(0, cmd, buffer, 512); |
| 1300 | } |
| 1301 | #endif |
| 1302 | count++; |
| 1303 | continue; |
| 1304 | unregister: |
| 1305 | release_region(bases[indx], 4); |
| 1306 | scsi_unregister(shpnt); |
| 1307 | continue; |
| 1308 | |
| 1309 | }; |
| 1310 | |
| 1311 | return count; |
| 1312 | } |
| 1313 | |
| 1314 | static int aha1542_release(struct Scsi_Host *shost) |
| 1315 | { |
| 1316 | if (shost->irq) |
| 1317 | free_irq(shost->irq, NULL); |
| 1318 | if (shost->dma_channel != 0xff) |
| 1319 | free_dma(shost->dma_channel); |
| 1320 | if (shost->io_port && shost->n_io_port) |
| 1321 | release_region(shost->io_port, shost->n_io_port); |
| 1322 | scsi_unregister(shost); |
| 1323 | return 0; |
| 1324 | } |
| 1325 | |
| 1326 | static int aha1542_restart(struct Scsi_Host *shost) |
| 1327 | { |
| 1328 | int i; |
| 1329 | int count = 0; |
| 1330 | #if 0 |
| 1331 | unchar ahacmd = CMD_START_SCSI; |
| 1332 | #endif |
| 1333 | |
| 1334 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
| 1335 | if (HOSTDATA(shost)->SCint[i] && |
| 1336 | !(HOSTDATA(shost)->SCint[i]->device->soft_reset)) { |
| 1337 | #if 0 |
| 1338 | HOSTDATA(shost)->mb[i].status = 1; /* Indicate ready to restart... */ |
| 1339 | #endif |
| 1340 | count++; |
| 1341 | } |
| 1342 | printk(KERN_DEBUG "Potential to restart %d stalled commands...\n", count); |
| 1343 | #if 0 |
| 1344 | /* start scsi command */ |
| 1345 | if (count) |
| 1346 | aha1542_out(shost->io_port, &ahacmd, 1); |
| 1347 | #endif |
| 1348 | return 0; |
| 1349 | } |
| 1350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | /* |
| 1352 | * This is a device reset. This is handled by sending a special command |
| 1353 | * to the device. |
| 1354 | */ |
| 1355 | static int aha1542_dev_reset(Scsi_Cmnd * SCpnt) |
| 1356 | { |
| 1357 | unsigned long flags; |
| 1358 | struct mailbox *mb; |
| 1359 | unchar target = SCpnt->device->id; |
| 1360 | unchar lun = SCpnt->device->lun; |
| 1361 | int mbo; |
| 1362 | struct ccb *ccb; |
| 1363 | unchar ahacmd = CMD_START_SCSI; |
| 1364 | |
| 1365 | ccb = HOSTDATA(SCpnt->device->host)->ccb; |
| 1366 | mb = HOSTDATA(SCpnt->device->host)->mb; |
| 1367 | |
| 1368 | spin_lock_irqsave(&aha1542_lock, flags); |
| 1369 | mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1; |
| 1370 | if (mbo >= AHA1542_MAILBOXES) |
| 1371 | mbo = 0; |
| 1372 | |
| 1373 | do { |
| 1374 | if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL) |
| 1375 | break; |
| 1376 | mbo++; |
| 1377 | if (mbo >= AHA1542_MAILBOXES) |
| 1378 | mbo = 0; |
| 1379 | } while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used); |
| 1380 | |
| 1381 | if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo]) |
| 1382 | panic("Unable to find empty mailbox for aha1542.\n"); |
| 1383 | |
| 1384 | HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively |
| 1385 | prevent someone else from |
| 1386 | screwing with this cdb. */ |
| 1387 | |
| 1388 | HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo; |
| 1389 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1390 | |
| 1391 | any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */ |
| 1392 | |
| 1393 | memset(&ccb[mbo], 0, sizeof(struct ccb)); |
| 1394 | |
| 1395 | ccb[mbo].op = 0x81; /* BUS DEVICE RESET */ |
| 1396 | |
| 1397 | ccb[mbo].idlun = (target & 7) << 5 | (lun & 7); /*SCSI Target Id */ |
| 1398 | |
| 1399 | ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0; |
| 1400 | ccb[mbo].commlinkid = 0; |
| 1401 | |
| 1402 | /* |
| 1403 | * Now tell the 1542 to flush all pending commands for this |
| 1404 | * target |
| 1405 | */ |
| 1406 | aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); |
| 1407 | |
| 1408 | printk(KERN_WARNING "aha1542.c: Trying device reset for target %d\n", SCpnt->device->id); |
| 1409 | |
| 1410 | return SUCCESS; |
| 1411 | |
| 1412 | |
| 1413 | #ifdef ERIC_neverdef |
| 1414 | /* |
| 1415 | * With the 1542 we apparently never get an interrupt to |
| 1416 | * acknowledge a device reset being sent. Then again, Leonard |
| 1417 | * says we are doing this wrong in the first place... |
| 1418 | * |
| 1419 | * Take a wait and see attitude. If we get spurious interrupts, |
| 1420 | * then the device reset is doing something sane and useful, and |
| 1421 | * we will wait for the interrupt to post completion. |
| 1422 | */ |
| 1423 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); |
| 1424 | |
| 1425 | /* |
| 1426 | * Free the command block for all commands running on this |
| 1427 | * target... |
| 1428 | */ |
| 1429 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
| 1430 | if (HOSTDATA(SCpnt->host)->SCint[i] && |
| 1431 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { |
| 1432 | Scsi_Cmnd *SCtmp; |
| 1433 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
| 1434 | if (SCtmp->host_scribble) { |
| 1435 | kfree(SCtmp->host_scribble); |
| 1436 | SCtmp->host_scribble = NULL; |
| 1437 | } |
| 1438 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
| 1439 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
| 1440 | } |
| 1441 | } |
| 1442 | return SUCCESS; |
| 1443 | |
| 1444 | return FAILED; |
| 1445 | #endif /* ERIC_neverdef */ |
| 1446 | } |
| 1447 | |
| 1448 | static int aha1542_bus_reset(Scsi_Cmnd * SCpnt) |
| 1449 | { |
| 1450 | int i; |
| 1451 | |
| 1452 | /* |
| 1453 | * This does a scsi reset for all devices on the bus. |
| 1454 | * In principle, we could also reset the 1542 - should |
| 1455 | * we do this? Try this first, and we can add that later |
| 1456 | * if it turns out to be useful. |
| 1457 | */ |
| 1458 | outb(SCRST, CONTROL(SCpnt->device->host->io_port)); |
| 1459 | |
| 1460 | /* |
| 1461 | * Wait for the thing to settle down a bit. Unfortunately |
| 1462 | * this is going to basically lock up the machine while we |
| 1463 | * wait for this to complete. To be 100% correct, we need to |
| 1464 | * check for timeout, and if we are doing something like this |
| 1465 | * we are pretty desperate anyways. |
| 1466 | */ |
| 1467 | spin_unlock_irq(SCpnt->device->host->host_lock); |
| 1468 | ssleep(4); |
| 1469 | spin_lock_irq(SCpnt->device->host->host_lock); |
| 1470 | |
| 1471 | WAIT(STATUS(SCpnt->device->host->io_port), |
| 1472 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
| 1473 | |
| 1474 | /* |
| 1475 | * Now try to pick up the pieces. For all pending commands, |
| 1476 | * free any internal data structures, and basically clear things |
| 1477 | * out. We do not try and restart any commands or anything - |
| 1478 | * the strategy handler takes care of that crap. |
| 1479 | */ |
| 1480 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); |
| 1481 | |
| 1482 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
| 1483 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { |
| 1484 | Scsi_Cmnd *SCtmp; |
| 1485 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; |
| 1486 | |
| 1487 | |
| 1488 | if (SCtmp->device->soft_reset) { |
| 1489 | /* |
| 1490 | * If this device implements the soft reset option, |
| 1491 | * then it is still holding onto the command, and |
| 1492 | * may yet complete it. In this case, we don't |
| 1493 | * flush the data. |
| 1494 | */ |
| 1495 | continue; |
| 1496 | } |
| 1497 | if (SCtmp->host_scribble) { |
| 1498 | kfree(SCtmp->host_scribble); |
| 1499 | SCtmp->host_scribble = NULL; |
| 1500 | } |
| 1501 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
| 1502 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; |
| 1503 | } |
| 1504 | } |
| 1505 | |
| 1506 | return SUCCESS; |
| 1507 | |
| 1508 | fail: |
| 1509 | return FAILED; |
| 1510 | } |
| 1511 | |
| 1512 | static int aha1542_host_reset(Scsi_Cmnd * SCpnt) |
| 1513 | { |
| 1514 | int i; |
| 1515 | |
| 1516 | /* |
| 1517 | * This does a scsi reset for all devices on the bus. |
| 1518 | * In principle, we could also reset the 1542 - should |
| 1519 | * we do this? Try this first, and we can add that later |
| 1520 | * if it turns out to be useful. |
| 1521 | */ |
| 1522 | outb(HRST | SCRST, CONTROL(SCpnt->device->host->io_port)); |
| 1523 | |
| 1524 | /* |
| 1525 | * Wait for the thing to settle down a bit. Unfortunately |
| 1526 | * this is going to basically lock up the machine while we |
| 1527 | * wait for this to complete. To be 100% correct, we need to |
| 1528 | * check for timeout, and if we are doing something like this |
| 1529 | * we are pretty desperate anyways. |
| 1530 | */ |
| 1531 | spin_unlock_irq(SCpnt->device->host->host_lock); |
| 1532 | ssleep(4); |
| 1533 | spin_lock_irq(SCpnt->device->host->host_lock); |
| 1534 | |
| 1535 | WAIT(STATUS(SCpnt->device->host->io_port), |
| 1536 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
| 1537 | |
| 1538 | /* |
| 1539 | * We need to do this too before the 1542 can interact with |
| 1540 | * us again. |
| 1541 | */ |
| 1542 | setup_mailboxes(SCpnt->device->host->io_port, SCpnt->device->host); |
| 1543 | |
| 1544 | /* |
| 1545 | * Now try to pick up the pieces. For all pending commands, |
| 1546 | * free any internal data structures, and basically clear things |
| 1547 | * out. We do not try and restart any commands or anything - |
| 1548 | * the strategy handler takes care of that crap. |
| 1549 | */ |
| 1550 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->device->host->host_no); |
| 1551 | |
| 1552 | for (i = 0; i < AHA1542_MAILBOXES; i++) { |
| 1553 | if (HOSTDATA(SCpnt->device->host)->SCint[i] != NULL) { |
| 1554 | Scsi_Cmnd *SCtmp; |
| 1555 | SCtmp = HOSTDATA(SCpnt->device->host)->SCint[i]; |
| 1556 | |
| 1557 | if (SCtmp->device->soft_reset) { |
| 1558 | /* |
| 1559 | * If this device implements the soft reset option, |
| 1560 | * then it is still holding onto the command, and |
| 1561 | * may yet complete it. In this case, we don't |
| 1562 | * flush the data. |
| 1563 | */ |
| 1564 | continue; |
| 1565 | } |
| 1566 | if (SCtmp->host_scribble) { |
| 1567 | kfree(SCtmp->host_scribble); |
| 1568 | SCtmp->host_scribble = NULL; |
| 1569 | } |
| 1570 | HOSTDATA(SCpnt->device->host)->SCint[i] = NULL; |
| 1571 | HOSTDATA(SCpnt->device->host)->mb[i].status = 0; |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | return SUCCESS; |
| 1576 | |
| 1577 | fail: |
| 1578 | return FAILED; |
| 1579 | } |
| 1580 | |
| 1581 | #if 0 |
| 1582 | /* |
| 1583 | * These are the old error handling routines. They are only temporarily |
| 1584 | * here while we play with the new error handling code. |
| 1585 | */ |
| 1586 | static int aha1542_old_abort(Scsi_Cmnd * SCpnt) |
| 1587 | { |
| 1588 | #if 0 |
| 1589 | unchar ahacmd = CMD_START_SCSI; |
| 1590 | unsigned long flags; |
| 1591 | struct mailbox *mb; |
| 1592 | int mbi, mbo, i; |
| 1593 | |
| 1594 | printk(KERN_DEBUG "In aha1542_abort: %x %x\n", |
| 1595 | inb(STATUS(SCpnt->host->io_port)), |
| 1596 | inb(INTRFLAGS(SCpnt->host->io_port))); |
| 1597 | |
| 1598 | spin_lock_irqsave(&aha1542_lock, flags); |
| 1599 | mb = HOSTDATA(SCpnt->host)->mb; |
| 1600 | mbi = HOSTDATA(SCpnt->host)->aha1542_last_mbi_used + 1; |
| 1601 | if (mbi >= 2 * AHA1542_MAILBOXES) |
| 1602 | mbi = AHA1542_MAILBOXES; |
| 1603 | |
| 1604 | do { |
| 1605 | if (mb[mbi].status != 0) |
| 1606 | break; |
| 1607 | mbi++; |
| 1608 | if (mbi >= 2 * AHA1542_MAILBOXES) |
| 1609 | mbi = AHA1542_MAILBOXES; |
| 1610 | } while (mbi != HOSTDATA(SCpnt->host)->aha1542_last_mbi_used); |
| 1611 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1612 | |
| 1613 | if (mb[mbi].status) { |
| 1614 | printk(KERN_ERR "Lost interrupt discovered on irq %d - attempting to recover\n", |
| 1615 | SCpnt->host->irq); |
| 1616 | aha1542_intr_handle(SCpnt->host, NULL); |
| 1617 | return 0; |
| 1618 | } |
| 1619 | /* OK, no lost interrupt. Try looking to see how many pending commands |
| 1620 | we think we have. */ |
| 1621 | |
| 1622 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
| 1623 | if (HOSTDATA(SCpnt->host)->SCint[i]) { |
| 1624 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { |
| 1625 | printk(KERN_ERR "Timed out command pending for %s\n", |
| 1626 | SCpnt->request->rq_disk ? |
| 1627 | SCpnt->request->rq_disk->disk_name : "?" |
| 1628 | ); |
| 1629 | if (HOSTDATA(SCpnt->host)->mb[i].status) { |
| 1630 | printk(KERN_ERR "OGMB still full - restarting\n"); |
| 1631 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); |
| 1632 | }; |
| 1633 | } else |
| 1634 | printk(KERN_ERR "Other pending command %s\n", |
| 1635 | SCpnt->request->rq_disk ? |
| 1636 | SCpnt->request->rq_disk->disk_name : "?" |
| 1637 | ); |
| 1638 | } |
| 1639 | #endif |
| 1640 | |
| 1641 | DEB(printk("aha1542_abort\n")); |
| 1642 | #if 0 |
| 1643 | spin_lock_irqsave(&aha1542_lock, flags); |
| 1644 | for (mbo = 0; mbo < AHA1542_MAILBOXES; mbo++) { |
| 1645 | if (SCpnt == HOSTDATA(SCpnt->host)->SCint[mbo]) { |
| 1646 | mb[mbo].status = 2; /* Abort command */ |
| 1647 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); /* start scsi command */ |
| 1648 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1649 | break; |
| 1650 | } |
| 1651 | } |
| 1652 | if (AHA1542_MAILBOXES == mbo) |
| 1653 | spin_unlock_irqrestore(&aha1542_lock, flags); |
| 1654 | #endif |
| 1655 | return SCSI_ABORT_SNOOZE; |
| 1656 | } |
| 1657 | |
| 1658 | /* We do not implement a reset function here, but the upper level code |
| 1659 | assumes that it will get some kind of response for the command in |
| 1660 | SCpnt. We must oblige, or the command will hang the scsi system. |
| 1661 | For a first go, we assume that the 1542 notifies us with all of the |
| 1662 | pending commands (it does implement soft reset, after all). */ |
| 1663 | |
| 1664 | static int aha1542_old_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags) |
| 1665 | { |
| 1666 | unchar ahacmd = CMD_START_SCSI; |
| 1667 | int i; |
| 1668 | |
| 1669 | /* |
| 1670 | * See if a bus reset was suggested. |
| 1671 | */ |
| 1672 | if (reset_flags & SCSI_RESET_SUGGEST_BUS_RESET) { |
| 1673 | /* |
| 1674 | * This does a scsi reset for all devices on the bus. |
| 1675 | * In principle, we could also reset the 1542 - should |
| 1676 | * we do this? Try this first, and we can add that later |
| 1677 | * if it turns out to be useful. |
| 1678 | */ |
| 1679 | outb(HRST | SCRST, CONTROL(SCpnt->host->io_port)); |
| 1680 | |
| 1681 | /* |
| 1682 | * Wait for the thing to settle down a bit. Unfortunately |
| 1683 | * this is going to basically lock up the machine while we |
| 1684 | * wait for this to complete. To be 100% correct, we need to |
| 1685 | * check for timeout, and if we are doing something like this |
| 1686 | * we are pretty desperate anyways. |
| 1687 | */ |
| 1688 | WAIT(STATUS(SCpnt->host->io_port), |
| 1689 | STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF); |
| 1690 | |
| 1691 | /* |
| 1692 | * We need to do this too before the 1542 can interact with |
| 1693 | * us again. |
| 1694 | */ |
| 1695 | setup_mailboxes(SCpnt->host->io_port, SCpnt->host); |
| 1696 | |
| 1697 | /* |
| 1698 | * Now try to pick up the pieces. Restart all commands |
| 1699 | * that are currently active on the bus, and reset all of |
| 1700 | * the datastructures. We have some time to kill while |
| 1701 | * things settle down, so print a nice message. |
| 1702 | */ |
| 1703 | printk(KERN_WARNING "Sent BUS RESET to scsi host %d\n", SCpnt->host->host_no); |
| 1704 | |
| 1705 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
| 1706 | if (HOSTDATA(SCpnt->host)->SCint[i] != NULL) { |
| 1707 | Scsi_Cmnd *SCtmp; |
| 1708 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
| 1709 | SCtmp->result = DID_RESET << 16; |
| 1710 | if (SCtmp->host_scribble) { |
| 1711 | kfree(SCtmp->host_scribble); |
| 1712 | SCtmp->host_scribble = NULL; |
| 1713 | } |
| 1714 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
| 1715 | SCtmp->scsi_done(SCpnt); |
| 1716 | |
| 1717 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
| 1718 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
| 1719 | } |
| 1720 | /* |
| 1721 | * Now tell the mid-level code what we did here. Since |
| 1722 | * we have restarted all of the outstanding commands, |
| 1723 | * then report SUCCESS. |
| 1724 | */ |
| 1725 | return (SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET); |
| 1726 | fail: |
| 1727 | printk(KERN_CRIT "aha1542.c: Unable to perform hard reset.\n"); |
| 1728 | printk(KERN_CRIT "Power cycle machine to reset\n"); |
| 1729 | return (SCSI_RESET_ERROR | SCSI_RESET_BUS_RESET); |
| 1730 | |
| 1731 | |
| 1732 | } else { |
| 1733 | /* This does a selective reset of just the one device */ |
| 1734 | /* First locate the ccb for this command */ |
| 1735 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
| 1736 | if (HOSTDATA(SCpnt->host)->SCint[i] == SCpnt) { |
| 1737 | HOSTDATA(SCpnt->host)->ccb[i].op = 0x81; /* BUS DEVICE RESET */ |
| 1738 | /* Now tell the 1542 to flush all pending commands for this target */ |
| 1739 | aha1542_out(SCpnt->host->io_port, &ahacmd, 1); |
| 1740 | |
| 1741 | /* Here is the tricky part. What to do next. Do we get an interrupt |
| 1742 | for the commands that we aborted with the specified target, or |
| 1743 | do we generate this on our own? Try it without first and see |
| 1744 | what happens */ |
| 1745 | printk(KERN_WARNING "Sent BUS DEVICE RESET to target %d\n", SCpnt->target); |
| 1746 | |
| 1747 | /* If the first does not work, then try the second. I think the |
| 1748 | first option is more likely to be correct. Free the command |
| 1749 | block for all commands running on this target... */ |
| 1750 | for (i = 0; i < AHA1542_MAILBOXES; i++) |
| 1751 | if (HOSTDATA(SCpnt->host)->SCint[i] && |
| 1752 | HOSTDATA(SCpnt->host)->SCint[i]->target == SCpnt->target) { |
| 1753 | Scsi_Cmnd *SCtmp; |
| 1754 | SCtmp = HOSTDATA(SCpnt->host)->SCint[i]; |
| 1755 | SCtmp->result = DID_RESET << 16; |
| 1756 | if (SCtmp->host_scribble) { |
| 1757 | kfree(SCtmp->host_scribble); |
| 1758 | SCtmp->host_scribble = NULL; |
| 1759 | } |
| 1760 | printk(KERN_WARNING "Sending DID_RESET for target %d\n", SCpnt->target); |
| 1761 | SCtmp->scsi_done(SCpnt); |
| 1762 | |
| 1763 | HOSTDATA(SCpnt->host)->SCint[i] = NULL; |
| 1764 | HOSTDATA(SCpnt->host)->mb[i].status = 0; |
| 1765 | } |
| 1766 | return SCSI_RESET_SUCCESS; |
| 1767 | } |
| 1768 | } |
| 1769 | /* No active command at this time, so this means that each time we got |
| 1770 | some kind of response the last time through. Tell the mid-level code |
| 1771 | to request sense information in order to decide what to do next. */ |
| 1772 | return SCSI_RESET_PUNT; |
| 1773 | } |
| 1774 | #endif /* end of big comment block around old_abort + old_reset */ |
| 1775 | |
| 1776 | static int aha1542_biosparam(struct scsi_device *sdev, |
| 1777 | struct block_device *bdev, sector_t capacity, int *ip) |
| 1778 | { |
| 1779 | int translation_algorithm; |
| 1780 | int size = capacity; |
| 1781 | |
| 1782 | translation_algorithm = HOSTDATA(sdev->host)->bios_translation; |
| 1783 | |
| 1784 | if ((size >> 11) > 1024 && translation_algorithm == BIOS_TRANSLATION_25563) { |
| 1785 | /* Please verify that this is the same as what DOS returns */ |
| 1786 | ip[0] = 255; |
| 1787 | ip[1] = 63; |
| 1788 | ip[2] = size / 255 / 63; |
| 1789 | } else { |
| 1790 | ip[0] = 64; |
| 1791 | ip[1] = 32; |
| 1792 | ip[2] = size >> 11; |
| 1793 | } |
| 1794 | |
| 1795 | return 0; |
| 1796 | } |
| 1797 | MODULE_LICENSE("GPL"); |
| 1798 | |
| 1799 | |
| 1800 | static Scsi_Host_Template driver_template = { |
| 1801 | .proc_name = "aha1542", |
| 1802 | .name = "Adaptec 1542", |
| 1803 | .detect = aha1542_detect, |
| 1804 | .release = aha1542_release, |
| 1805 | .queuecommand = aha1542_queuecommand, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1806 | .eh_device_reset_handler= aha1542_dev_reset, |
| 1807 | .eh_bus_reset_handler = aha1542_bus_reset, |
| 1808 | .eh_host_reset_handler = aha1542_host_reset, |
| 1809 | .bios_param = aha1542_biosparam, |
| 1810 | .can_queue = AHA1542_MAILBOXES, |
| 1811 | .this_id = 7, |
| 1812 | .sg_tablesize = AHA1542_SCATTER, |
| 1813 | .cmd_per_lun = AHA1542_CMDLUN, |
| 1814 | .unchecked_isa_dma = 1, |
| 1815 | .use_clustering = ENABLE_CLUSTERING, |
| 1816 | }; |
| 1817 | #include "scsi_module.c" |