| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* aha152x.c -- Adaptec AHA-152x driver |
| 3 | * Author: Jürgen E. Fischer, fischer@norbit.de |
| 4 | * Copyright 1993-2004 Jürgen E. Fischer |
| 5 | * |
| 6 | * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $ |
| 7 | * |
| 8 | * $Log: aha152x.c,v $ |
| 9 | * Revision 2.7 2004/01/24 11:42:59 fischer |
| 10 | * - gather code that is not used by PCMCIA at the end |
| 11 | * - move request_region for !PCMCIA case to detection |
| 12 | * - migration to new scsi host api (remove legacy code) |
| 13 | * - free host scribble before scsi_done |
| 14 | * - fix error handling |
| 15 | * - one isapnp device added to id_table |
| 16 | * |
| 17 | * Revision 2.6 2003/10/30 20:52:47 fischer |
| 18 | * - interfaces changes for kernel 2.6 |
| 19 | * - aha152x_probe_one introduced for pcmcia stub |
| 20 | * - fixed pnpdev handling |
| 21 | * - instead of allocation a new one, reuse command for request sense after check condition and reset |
| 22 | * - fixes race in is_complete |
| 23 | * |
| 24 | * Revision 2.5 2002/04/14 11:24:53 fischer |
| 25 | * - isapnp support |
| 26 | * - abort fixed |
| 27 | * - 2.5 support |
| 28 | * |
| 29 | * Revision 2.4 2000/12/16 12:53:56 fischer |
| 30 | * - allow REQUEST SENSE to be queued |
| 31 | * - handle shared PCI interrupts |
| 32 | * |
| 33 | * Revision 2.3 2000/11/04 16:40:26 fischer |
| 34 | * - handle data overruns |
| 35 | * - extend timeout for data phases |
| 36 | * |
| 37 | * Revision 2.2 2000/08/08 19:54:53 fischer |
| 38 | * - minor changes |
| 39 | * |
| 40 | * Revision 2.1 2000/05/17 16:23:17 fischer |
| 41 | * - signature update |
| 42 | * - fix for data out w/o scatter gather |
| 43 | * |
| 44 | * Revision 2.0 1999/12/25 15:07:32 fischer |
| 45 | * - interrupt routine completly reworked |
| 46 | * - basic support for new eh code |
| 47 | * |
| 48 | * Revision 1.21 1999/11/10 23:46:36 fischer |
| 49 | * - default to synchronous operation |
| 50 | * - synchronous negotiation fixed |
| 51 | * - added timeout to loops |
| 52 | * - debugging output can be controlled through procfs |
| 53 | * |
| 54 | * Revision 1.20 1999/11/07 18:37:31 fischer |
| 55 | * - synchronous operation works |
| 56 | * - resid support for sg driver |
| 57 | * |
| 58 | * Revision 1.19 1999/11/02 22:39:59 fischer |
| 59 | * - moved leading comments to README.aha152x |
| 60 | * - new additional module parameters |
| 61 | * - updates for 2.3 |
| 62 | * - support for the Tripace TC1550 controller |
| 63 | * - interrupt handling changed |
| 64 | * |
| 65 | * Revision 1.18 1996/09/07 20:10:40 fischer |
| 66 | * - fixed can_queue handling (multiple outstanding commands working again) |
| 67 | * |
| 68 | * Revision 1.17 1996/08/17 16:05:14 fischer |
| 69 | * - biosparam improved |
| 70 | * - interrupt verification |
| 71 | * - updated documentation |
| 72 | * - cleanups |
| 73 | * |
| 74 | * Revision 1.16 1996/06/09 00:04:56 root |
| 75 | * - added configuration symbols for insmod (aha152x/aha152x1) |
| 76 | * |
| 77 | * Revision 1.15 1996/04/30 14:52:06 fischer |
| 78 | * - proc info fixed |
| 79 | * - support for extended translation for >1GB disks |
| 80 | * |
| 81 | * Revision 1.14 1996/01/17 15:11:20 fischer |
| 82 | * - fixed lockup in MESSAGE IN phase after reconnection |
| 83 | * |
| 84 | * Revision 1.13 1996/01/09 02:15:53 fischer |
| 85 | * - some cleanups |
| 86 | * - moved request_irq behind controller initialization |
| 87 | * (to avoid spurious interrupts) |
| 88 | * |
| 89 | * Revision 1.12 1995/12/16 12:26:07 fischer |
| 90 | * - barrier()s added |
| 91 | * - configurable RESET delay added |
| 92 | * |
| 93 | * Revision 1.11 1995/12/06 21:18:35 fischer |
| 94 | * - some minor updates |
| 95 | * |
| 96 | * Revision 1.10 1995/07/22 19:18:45 fischer |
| 97 | * - support for 2 controllers |
| 98 | * - started synchronous data transfers (not working yet) |
| 99 | * |
| 100 | * Revision 1.9 1995/03/18 09:20:24 root |
| 101 | * - patches for PCMCIA and modules |
| 102 | * |
| 103 | * Revision 1.8 1995/01/21 22:07:19 root |
| 104 | * - snarf_region => request_region |
| 105 | * - aha152x_intr interface change |
| 106 | * |
| 107 | * Revision 1.7 1995/01/02 23:19:36 root |
| 108 | * - updated COMMAND_SIZE to cmd_len |
| 109 | * - changed sti() to restore_flags() |
| 110 | * - fixed some #ifdef which generated warnings |
| 111 | * |
| 112 | * Revision 1.6 1994/11/24 20:35:27 root |
| 113 | * - problem with odd number of bytes in fifo fixed |
| 114 | * |
| 115 | * Revision 1.5 1994/10/30 14:39:56 root |
| 116 | * - abort code fixed |
| 117 | * - debugging improved |
| 118 | * |
| 119 | * Revision 1.4 1994/09/12 11:33:01 root |
| 120 | * - irqaction to request_irq |
| 121 | * - abortion updated |
| 122 | * |
| 123 | * Revision 1.3 1994/08/04 13:53:05 root |
| 124 | * - updates for mid-level-driver changes |
| 125 | * - accept unexpected BUSFREE phase as error condition |
| 126 | * - parity check now configurable |
| 127 | * |
| 128 | * Revision 1.2 1994/07/03 12:56:36 root |
| 129 | * - cleaned up debugging code |
| 130 | * - more tweaking on reset delays |
| 131 | * - updated abort/reset code (pretty untested...) |
| 132 | * |
| 133 | * Revision 1.1 1994/05/28 21:18:49 root |
| 134 | * - update for mid-level interface change (abort-reset) |
| 135 | * - delays after resets adjusted for some slow devices |
| 136 | * |
| 137 | * Revision 1.0 1994/03/25 12:52:00 root |
| 138 | * - Fixed "more data than expected" problem |
| 139 | * - added new BIOS signatures |
| 140 | * |
| 141 | * Revision 0.102 1994/01/31 20:44:12 root |
| 142 | * - minor changes in insw/outsw handling |
| 143 | * |
| 144 | * Revision 0.101 1993/12/13 01:16:27 root |
| 145 | * - fixed STATUS phase (non-GOOD stati were dropped sometimes; |
| 146 | * fixes problems with CD-ROM sector size detection & media change) |
| 147 | * |
| 148 | * Revision 0.100 1993/12/10 16:58:47 root |
| 149 | * - fix for unsuccessful selections in case of non-continuous id assignments |
| 150 | * on the scsi bus. |
| 151 | * |
| 152 | * Revision 0.99 1993/10/24 16:19:59 root |
| 153 | * - fixed DATA IN (rare read errors gone) |
| 154 | * |
| 155 | * Revision 0.98 1993/10/17 12:54:44 root |
| 156 | * - fixed some recent fixes (shame on me) |
| 157 | * - moved initialization of scratch area to aha152x_queue |
| 158 | * |
| 159 | * Revision 0.97 1993/10/09 18:53:53 root |
| 160 | * - DATA IN fixed. Rarely left data in the fifo. |
| 161 | * |
| 162 | * Revision 0.96 1993/10/03 00:53:59 root |
| 163 | * - minor changes on DATA IN |
| 164 | * |
| 165 | * Revision 0.95 1993/09/24 10:36:01 root |
| 166 | * - change handling of MSGI after reselection |
| 167 | * - fixed sti/cli |
| 168 | * - minor changes |
| 169 | * |
| 170 | * Revision 0.94 1993/09/18 14:08:22 root |
| 171 | * - fixed bug in multiple outstanding command code |
| 172 | * - changed detection |
| 173 | * - support for kernel command line configuration |
| 174 | * - reset corrected |
| 175 | * - changed message handling |
| 176 | * |
| 177 | * Revision 0.93 1993/09/15 20:41:19 root |
| 178 | * - fixed bugs with multiple outstanding commands |
| 179 | * |
| 180 | * Revision 0.92 1993/09/13 02:46:33 root |
| 181 | * - multiple outstanding commands work (no problems with IBM drive) |
| 182 | * |
| 183 | * Revision 0.91 1993/09/12 20:51:46 root |
| 184 | * added multiple outstanding commands |
| 185 | * (some problem with this $%&? IBM device remain) |
| 186 | * |
| 187 | * Revision 0.9 1993/09/12 11:11:22 root |
| 188 | * - corrected auto-configuration |
| 189 | * - changed the auto-configuration (added some '#define's) |
| 190 | * - added support for dis-/reconnection |
| 191 | * |
| 192 | * Revision 0.8 1993/09/06 23:09:39 root |
| 193 | * - added support for the drive activity light |
| 194 | * - minor changes |
| 195 | * |
| 196 | * Revision 0.7 1993/09/05 14:30:15 root |
| 197 | * - improved phase detection |
| 198 | * - now using the new snarf_region code of 0.99pl13 |
| 199 | * |
| 200 | * Revision 0.6 1993/09/02 11:01:38 root |
| 201 | * first public release; added some signatures and biosparam() |
| 202 | * |
| 203 | * Revision 0.5 1993/08/30 10:23:30 root |
| 204 | * fixed timing problems with my IBM drive |
| 205 | * |
| 206 | * Revision 0.4 1993/08/29 14:06:52 root |
| 207 | * fixed some problems with timeouts due incomplete commands |
| 208 | * |
| 209 | * Revision 0.3 1993/08/28 15:55:03 root |
| 210 | * writing data works too. mounted and worked on a dos partition |
| 211 | * |
| 212 | * Revision 0.2 1993/08/27 22:42:07 root |
| 213 | * reading data works. Mounted a msdos partition. |
| 214 | * |
| 215 | * Revision 0.1 1993/08/25 13:38:30 root |
| 216 | * first "damn thing doesn't work" version |
| 217 | * |
| 218 | * Revision 0.0 1993/08/14 19:54:25 root |
| 219 | * empty function bodies; detect() works. |
| 220 | * |
| 221 | ************************************************************************** |
| 222 | |
| 223 | see Documentation/scsi/aha152x.rst for configuration details |
| 224 | |
| 225 | **************************************************************************/ |
| 226 | |
| 227 | #include <linux/module.h> |
| 228 | #include <asm/irq.h> |
| 229 | #include <linux/io.h> |
| 230 | #include <linux/blkdev.h> |
| 231 | #include <linux/completion.h> |
| 232 | #include <linux/errno.h> |
| 233 | #include <linux/string.h> |
| 234 | #include <linux/wait.h> |
| 235 | #include <linux/ioport.h> |
| 236 | #include <linux/delay.h> |
| 237 | #include <linux/proc_fs.h> |
| 238 | #include <linux/interrupt.h> |
| 239 | #include <linux/init.h> |
| 240 | #include <linux/kernel.h> |
| 241 | #include <linux/isapnp.h> |
| 242 | #include <linux/spinlock.h> |
| 243 | #include <linux/workqueue.h> |
| 244 | #include <linux/list.h> |
| 245 | #include <linux/slab.h> |
| 246 | |
| 247 | #include <scsi/scsi.h> |
| 248 | #include <scsi/scsi_cmnd.h> |
| 249 | #include <scsi/scsi_dbg.h> |
| 250 | #include <scsi/scsi_device.h> |
| 251 | #include <scsi/scsi_eh.h> |
| 252 | #include <scsi/scsi_host.h> |
| 253 | #include <scsi/scsi_tcq.h> |
| 254 | #include <scsi/scsi_transport_spi.h> |
| 255 | #include <scsi/scsicam.h> |
| 256 | #include "aha152x.h" |
| 257 | |
| 258 | static LIST_HEAD(aha152x_host_list); |
| 259 | |
| 260 | |
| 261 | /* DEFINES */ |
| 262 | |
| 263 | /* For PCMCIA cards, always use AUTOCONF */ |
| 264 | #if defined(AHA152X_PCMCIA) || defined(MODULE) |
| 265 | #if !defined(AUTOCONF) |
| 266 | #define AUTOCONF |
| 267 | #endif |
| 268 | #endif |
| 269 | |
| 270 | #if !defined(AUTOCONF) && !defined(SETUP0) |
| 271 | #error define AUTOCONF or SETUP0 |
| 272 | #endif |
| 273 | |
| 274 | #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags) |
| 275 | #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags) |
| 276 | |
| 277 | #define LEAD "(scsi%d:%d:%d) " |
| 278 | #define INFO_LEAD KERN_INFO LEAD |
| 279 | #define CMDINFO(cmd) \ |
| 280 | (cmd) ? ((cmd)->device->host->host_no) : -1, \ |
| 281 | (cmd) ? ((cmd)->device->id & 0x0f) : -1, \ |
| 282 | (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1 |
| 283 | |
| 284 | static inline void |
| 285 | CMD_INC_RESID(struct scsi_cmnd *cmd, int inc) |
| 286 | { |
| 287 | scsi_set_resid(cmd, scsi_get_resid(cmd) + inc); |
| 288 | } |
| 289 | |
| 290 | #define DELAY_DEFAULT 1000 |
| 291 | |
| 292 | #if defined(AHA152X_PCMCIA) |
| 293 | #define IRQ_MIN 0 |
| 294 | #define IRQ_MAX 16 |
| 295 | #else |
| 296 | #define IRQ_MIN 9 |
| 297 | #if defined(__PPC) |
| 298 | #define IRQ_MAX (nr_irqs-1) |
| 299 | #else |
| 300 | #define IRQ_MAX 12 |
| 301 | #endif |
| 302 | #endif |
| 303 | |
| 304 | enum { |
| 305 | not_issued = 0x0001, /* command not yet issued */ |
| 306 | selecting = 0x0002, /* target is being selected */ |
| 307 | identified = 0x0004, /* IDENTIFY was sent */ |
| 308 | disconnected = 0x0008, /* target disconnected */ |
| 309 | completed = 0x0010, /* target sent COMMAND COMPLETE */ |
| 310 | aborted = 0x0020, /* ABORT was sent */ |
| 311 | resetted = 0x0040, /* BUS DEVICE RESET was sent */ |
| 312 | spiordy = 0x0080, /* waiting for SPIORDY to raise */ |
| 313 | syncneg = 0x0100, /* synchronous negotiation in progress */ |
| 314 | aborting = 0x0200, /* ABORT is pending */ |
| 315 | resetting = 0x0400, /* BUS DEVICE RESET is pending */ |
| 316 | check_condition = 0x0800, /* requesting sense after CHECK CONDITION */ |
| 317 | }; |
| 318 | |
| 319 | struct aha152x_cmd_priv { |
| 320 | char *ptr; |
| 321 | int this_residual; |
| 322 | struct scatterlist *buffer; |
| 323 | int status; |
| 324 | int message; |
| 325 | int sent_command; |
| 326 | int phase; |
| 327 | }; |
| 328 | |
| 329 | static struct aha152x_cmd_priv *aha152x_priv(struct scsi_cmnd *cmd) |
| 330 | { |
| 331 | return scsi_cmd_priv(cmd); |
| 332 | } |
| 333 | |
| 334 | MODULE_AUTHOR("Jürgen Fischer"); |
| 335 | MODULE_DESCRIPTION(AHA152X_REVID); |
| 336 | MODULE_LICENSE("GPL"); |
| 337 | |
| 338 | #if !defined(AHA152X_PCMCIA) |
| 339 | #if defined(MODULE) |
| 340 | static int io[] = {0, 0}; |
| 341 | module_param_hw_array(io, int, ioport, NULL, 0); |
| 342 | MODULE_PARM_DESC(io,"base io address of controller"); |
| 343 | |
| 344 | static int irq[] = {0, 0}; |
| 345 | module_param_hw_array(irq, int, irq, NULL, 0); |
| 346 | MODULE_PARM_DESC(irq,"interrupt for controller"); |
| 347 | |
| 348 | static int scsiid[] = {7, 7}; |
| 349 | module_param_array(scsiid, int, NULL, 0); |
| 350 | MODULE_PARM_DESC(scsiid,"scsi id of controller"); |
| 351 | |
| 352 | static int reconnect[] = {1, 1}; |
| 353 | module_param_array(reconnect, int, NULL, 0); |
| 354 | MODULE_PARM_DESC(reconnect,"allow targets to disconnect"); |
| 355 | |
| 356 | static int parity[] = {1, 1}; |
| 357 | module_param_array(parity, int, NULL, 0); |
| 358 | MODULE_PARM_DESC(parity,"use scsi parity"); |
| 359 | |
| 360 | static int sync[] = {1, 1}; |
| 361 | module_param_array(sync, int, NULL, 0); |
| 362 | MODULE_PARM_DESC(sync,"use synchronous transfers"); |
| 363 | |
| 364 | static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT}; |
| 365 | module_param_array(delay, int, NULL, 0); |
| 366 | MODULE_PARM_DESC(delay,"scsi reset delay"); |
| 367 | |
| 368 | static int exttrans[] = {0, 0}; |
| 369 | module_param_array(exttrans, int, NULL, 0); |
| 370 | MODULE_PARM_DESC(exttrans,"use extended translation"); |
| 371 | |
| 372 | static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; |
| 373 | module_param_array(aha152x, int, NULL, 0); |
| 374 | MODULE_PARM_DESC(aha152x, "parameters for first controller"); |
| 375 | |
| 376 | static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; |
| 377 | module_param_array(aha152x1, int, NULL, 0); |
| 378 | MODULE_PARM_DESC(aha152x1, "parameters for second controller"); |
| 379 | #endif /* MODULE */ |
| 380 | |
| 381 | #ifdef __ISAPNP__ |
| 382 | static struct isapnp_device_id id_table[] = { |
| 383 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 }, |
| 384 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 }, |
| 385 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 }, |
| 386 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 }, |
| 387 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 }, |
| 388 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 }, |
| 389 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 }, |
| 390 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 }, |
| 391 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 }, |
| 392 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 }, |
| 393 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 }, |
| 394 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 }, |
| 395 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 }, |
| 396 | { ISAPNP_DEVICE_SINGLE_END, } |
| 397 | }; |
| 398 | MODULE_DEVICE_TABLE(isapnp, id_table); |
| 399 | #endif /* ISAPNP */ |
| 400 | |
| 401 | #endif /* !AHA152X_PCMCIA */ |
| 402 | |
| 403 | static const struct scsi_host_template aha152x_driver_template; |
| 404 | |
| 405 | /* |
| 406 | * internal states of the host |
| 407 | * |
| 408 | */ |
| 409 | enum aha152x_state { |
| 410 | idle=0, |
| 411 | unknown, |
| 412 | seldo, |
| 413 | seldi, |
| 414 | selto, |
| 415 | busfree, |
| 416 | msgo, |
| 417 | cmd, |
| 418 | msgi, |
| 419 | status, |
| 420 | datai, |
| 421 | datao, |
| 422 | parerr, |
| 423 | rsti, |
| 424 | maxstate |
| 425 | }; |
| 426 | |
| 427 | /* |
| 428 | * current state information of the host |
| 429 | * |
| 430 | */ |
| 431 | struct aha152x_hostdata { |
| 432 | struct scsi_cmnd *issue_SC; |
| 433 | /* pending commands to issue */ |
| 434 | |
| 435 | struct scsi_cmnd *current_SC; |
| 436 | /* current command on the bus */ |
| 437 | |
| 438 | struct scsi_cmnd *disconnected_SC; |
| 439 | /* commands that disconnected */ |
| 440 | |
| 441 | struct scsi_cmnd *done_SC; |
| 442 | /* command that was completed */ |
| 443 | |
| 444 | spinlock_t lock; |
| 445 | /* host lock */ |
| 446 | |
| 447 | #if defined(AHA152X_STAT) |
| 448 | int total_commands; |
| 449 | int disconnections; |
| 450 | int busfree_without_any_action; |
| 451 | int busfree_without_old_command; |
| 452 | int busfree_without_new_command; |
| 453 | int busfree_without_done_command; |
| 454 | int busfree_with_check_condition; |
| 455 | int count[maxstate]; |
| 456 | int count_trans[maxstate]; |
| 457 | unsigned long time[maxstate]; |
| 458 | #endif |
| 459 | |
| 460 | int commands; /* current number of commands */ |
| 461 | |
| 462 | int reconnect; /* disconnection allowed */ |
| 463 | int parity; /* parity checking enabled */ |
| 464 | int synchronous; /* synchronous transferes enabled */ |
| 465 | int delay; /* reset out delay */ |
| 466 | int ext_trans; /* extended translation enabled */ |
| 467 | |
| 468 | int swint; /* software-interrupt was fired during detect() */ |
| 469 | int service; /* bh needs to be run */ |
| 470 | int in_intr; /* bh is running */ |
| 471 | |
| 472 | /* current state, |
| 473 | previous state, |
| 474 | last state different from current state */ |
| 475 | enum aha152x_state state, prevstate, laststate; |
| 476 | |
| 477 | int target; |
| 478 | /* reconnecting target */ |
| 479 | |
| 480 | unsigned char syncrate[8]; |
| 481 | /* current synchronous transfer agreements */ |
| 482 | |
| 483 | unsigned char syncneg[8]; |
| 484 | /* 0: no negotiation; |
| 485 | * 1: negotiation in progress; |
| 486 | * 2: negotiation completed |
| 487 | */ |
| 488 | |
| 489 | int cmd_i; |
| 490 | /* number of sent bytes of current command */ |
| 491 | |
| 492 | int msgi_len; |
| 493 | /* number of received message bytes */ |
| 494 | unsigned char msgi[256]; |
| 495 | /* received message bytes */ |
| 496 | |
| 497 | int msgo_i, msgo_len; |
| 498 | /* number of sent bytes and length of current messages */ |
| 499 | unsigned char msgo[256]; |
| 500 | /* pending messages */ |
| 501 | |
| 502 | int data_len; |
| 503 | /* number of sent/received bytes in dataphase */ |
| 504 | |
| 505 | unsigned long io_port0; |
| 506 | unsigned long io_port1; |
| 507 | |
| 508 | #ifdef __ISAPNP__ |
| 509 | struct pnp_dev *pnpdev; |
| 510 | #endif |
| 511 | struct list_head host_list; |
| 512 | }; |
| 513 | |
| 514 | |
| 515 | /* |
| 516 | * host specific command extension |
| 517 | * |
| 518 | */ |
| 519 | struct aha152x_scdata { |
| 520 | struct scsi_cmnd *next; /* next sc in queue */ |
| 521 | struct completion *done;/* semaphore to block on */ |
| 522 | struct scsi_eh_save ses; |
| 523 | }; |
| 524 | |
| 525 | /* access macros for hostdata */ |
| 526 | |
| 527 | #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata) |
| 528 | |
| 529 | #define HOSTNO ((shpnt)->host_no) |
| 530 | |
| 531 | #define CURRENT_SC (HOSTDATA(shpnt)->current_SC) |
| 532 | #define DONE_SC (HOSTDATA(shpnt)->done_SC) |
| 533 | #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC) |
| 534 | #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC) |
| 535 | #define QLOCK (HOSTDATA(shpnt)->lock) |
| 536 | #define QLOCKER (HOSTDATA(shpnt)->locker) |
| 537 | #define QLOCKERL (HOSTDATA(shpnt)->lockerl) |
| 538 | |
| 539 | #define STATE (HOSTDATA(shpnt)->state) |
| 540 | #define PREVSTATE (HOSTDATA(shpnt)->prevstate) |
| 541 | #define LASTSTATE (HOSTDATA(shpnt)->laststate) |
| 542 | |
| 543 | #define RECONN_TARGET (HOSTDATA(shpnt)->target) |
| 544 | |
| 545 | #define CMD_I (HOSTDATA(shpnt)->cmd_i) |
| 546 | |
| 547 | #define MSGO(i) (HOSTDATA(shpnt)->msgo[i]) |
| 548 | #define MSGO_I (HOSTDATA(shpnt)->msgo_i) |
| 549 | #define MSGOLEN (HOSTDATA(shpnt)->msgo_len) |
| 550 | #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow")) |
| 551 | |
| 552 | #define MSGI(i) (HOSTDATA(shpnt)->msgi[i]) |
| 553 | #define MSGILEN (HOSTDATA(shpnt)->msgi_len) |
| 554 | #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow")) |
| 555 | |
| 556 | #define DATA_LEN (HOSTDATA(shpnt)->data_len) |
| 557 | |
| 558 | #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id]) |
| 559 | #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id]) |
| 560 | |
| 561 | #define DELAY (HOSTDATA(shpnt)->delay) |
| 562 | #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans) |
| 563 | #define TC1550 (HOSTDATA(shpnt)->tc1550) |
| 564 | #define RECONNECT (HOSTDATA(shpnt)->reconnect) |
| 565 | #define PARITY (HOSTDATA(shpnt)->parity) |
| 566 | #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous) |
| 567 | |
| 568 | #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0) |
| 569 | #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1) |
| 570 | |
| 571 | #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble) |
| 572 | #define SCNEXT(SCpnt) SCDATA(SCpnt)->next |
| 573 | #define SCSEM(SCpnt) SCDATA(SCpnt)->done |
| 574 | |
| 575 | #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) |
| 576 | |
| 577 | /* state handling */ |
| 578 | static void seldi_run(struct Scsi_Host *shpnt); |
| 579 | static void seldo_run(struct Scsi_Host *shpnt); |
| 580 | static void selto_run(struct Scsi_Host *shpnt); |
| 581 | static void busfree_run(struct Scsi_Host *shpnt); |
| 582 | |
| 583 | static void msgo_init(struct Scsi_Host *shpnt); |
| 584 | static void msgo_run(struct Scsi_Host *shpnt); |
| 585 | static void msgo_end(struct Scsi_Host *shpnt); |
| 586 | |
| 587 | static void cmd_init(struct Scsi_Host *shpnt); |
| 588 | static void cmd_run(struct Scsi_Host *shpnt); |
| 589 | static void cmd_end(struct Scsi_Host *shpnt); |
| 590 | |
| 591 | static void datai_init(struct Scsi_Host *shpnt); |
| 592 | static void datai_run(struct Scsi_Host *shpnt); |
| 593 | static void datai_end(struct Scsi_Host *shpnt); |
| 594 | |
| 595 | static void datao_init(struct Scsi_Host *shpnt); |
| 596 | static void datao_run(struct Scsi_Host *shpnt); |
| 597 | static void datao_end(struct Scsi_Host *shpnt); |
| 598 | |
| 599 | static void status_run(struct Scsi_Host *shpnt); |
| 600 | |
| 601 | static void msgi_run(struct Scsi_Host *shpnt); |
| 602 | static void msgi_end(struct Scsi_Host *shpnt); |
| 603 | |
| 604 | static void parerr_run(struct Scsi_Host *shpnt); |
| 605 | static void rsti_run(struct Scsi_Host *shpnt); |
| 606 | |
| 607 | static void is_complete(struct Scsi_Host *shpnt); |
| 608 | |
| 609 | /* |
| 610 | * driver states |
| 611 | * |
| 612 | */ |
| 613 | static struct { |
| 614 | char *name; |
| 615 | void (*init)(struct Scsi_Host *); |
| 616 | void (*run)(struct Scsi_Host *); |
| 617 | void (*end)(struct Scsi_Host *); |
| 618 | int spio; |
| 619 | } states[] = { |
| 620 | { "idle", NULL, NULL, NULL, 0}, |
| 621 | { "unknown", NULL, NULL, NULL, 0}, |
| 622 | { "seldo", NULL, seldo_run, NULL, 0}, |
| 623 | { "seldi", NULL, seldi_run, NULL, 0}, |
| 624 | { "selto", NULL, selto_run, NULL, 0}, |
| 625 | { "busfree", NULL, busfree_run, NULL, 0}, |
| 626 | { "msgo", msgo_init, msgo_run, msgo_end, 1}, |
| 627 | { "cmd", cmd_init, cmd_run, cmd_end, 1}, |
| 628 | { "msgi", NULL, msgi_run, msgi_end, 1}, |
| 629 | { "status", NULL, status_run, NULL, 1}, |
| 630 | { "datai", datai_init, datai_run, datai_end, 0}, |
| 631 | { "datao", datao_init, datao_run, datao_end, 0}, |
| 632 | { "parerr", NULL, parerr_run, NULL, 0}, |
| 633 | { "rsti", NULL, rsti_run, NULL, 0}, |
| 634 | }; |
| 635 | |
| 636 | /* setup & interrupt */ |
| 637 | static irqreturn_t intr(int irq, void *dev_id); |
| 638 | static void reset_ports(struct Scsi_Host *shpnt); |
| 639 | static void aha152x_error(struct Scsi_Host *shpnt, char *msg); |
| 640 | static void done(struct Scsi_Host *shpnt, unsigned char status_byte, |
| 641 | unsigned char host_byte); |
| 642 | |
| 643 | /* diagnostics */ |
| 644 | static void show_command(struct scsi_cmnd * ptr); |
| 645 | static void show_queues(struct Scsi_Host *shpnt); |
| 646 | static void disp_enintr(struct Scsi_Host *shpnt); |
| 647 | |
| 648 | |
| 649 | /* |
| 650 | * queue services: |
| 651 | * |
| 652 | */ |
| 653 | static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC) |
| 654 | { |
| 655 | struct scsi_cmnd *end; |
| 656 | |
| 657 | SCNEXT(new_SC) = NULL; |
| 658 | if (!*SC) |
| 659 | *SC = new_SC; |
| 660 | else { |
| 661 | for (end = *SC; SCNEXT(end); end = SCNEXT(end)) |
| 662 | ; |
| 663 | SCNEXT(end) = new_SC; |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC) |
| 668 | { |
| 669 | struct scsi_cmnd *ptr; |
| 670 | |
| 671 | ptr = *SC; |
| 672 | if (ptr) { |
| 673 | *SC = SCNEXT(*SC); |
| 674 | SCNEXT(ptr)=NULL; |
| 675 | } |
| 676 | return ptr; |
| 677 | } |
| 678 | |
| 679 | static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC, |
| 680 | int target, int lun) |
| 681 | { |
| 682 | struct scsi_cmnd *ptr, *prev; |
| 683 | |
| 684 | for (ptr = *SC, prev = NULL; |
| 685 | ptr && ((ptr->device->id != target) || (ptr->device->lun != lun)); |
| 686 | prev = ptr, ptr = SCNEXT(ptr)) |
| 687 | ; |
| 688 | |
| 689 | if (ptr) { |
| 690 | if (prev) |
| 691 | SCNEXT(prev) = SCNEXT(ptr); |
| 692 | else |
| 693 | *SC = SCNEXT(ptr); |
| 694 | |
| 695 | SCNEXT(ptr)=NULL; |
| 696 | } |
| 697 | |
| 698 | return ptr; |
| 699 | } |
| 700 | |
| 701 | static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC, |
| 702 | struct scsi_cmnd *SCp) |
| 703 | { |
| 704 | struct scsi_cmnd *ptr, *prev; |
| 705 | |
| 706 | for (ptr = *SC, prev = NULL; |
| 707 | ptr && SCp!=ptr; |
| 708 | prev = ptr, ptr = SCNEXT(ptr)) |
| 709 | ; |
| 710 | |
| 711 | if (ptr) { |
| 712 | if (prev) |
| 713 | SCNEXT(prev) = SCNEXT(ptr); |
| 714 | else |
| 715 | *SC = SCNEXT(ptr); |
| 716 | |
| 717 | SCNEXT(ptr)=NULL; |
| 718 | } |
| 719 | |
| 720 | return ptr; |
| 721 | } |
| 722 | |
| 723 | static irqreturn_t swintr(int irqno, void *dev_id) |
| 724 | { |
| 725 | struct Scsi_Host *shpnt = dev_id; |
| 726 | |
| 727 | HOSTDATA(shpnt)->swint++; |
| 728 | |
| 729 | SETPORT(DMACNTRL0, INTEN); |
| 730 | return IRQ_HANDLED; |
| 731 | } |
| 732 | |
| 733 | struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup) |
| 734 | { |
| 735 | struct Scsi_Host *shpnt; |
| 736 | |
| 737 | shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata)); |
| 738 | if (!shpnt) { |
| 739 | printk(KERN_ERR "aha152x: scsi_host_alloc failed\n"); |
| 740 | return NULL; |
| 741 | } |
| 742 | |
| 743 | memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt)); |
| 744 | INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list); |
| 745 | |
| 746 | /* need to have host registered before triggering any interrupt */ |
| 747 | list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list); |
| 748 | |
| 749 | shpnt->io_port = setup->io_port; |
| 750 | shpnt->n_io_port = IO_RANGE; |
| 751 | shpnt->irq = setup->irq; |
| 752 | |
| 753 | if (!setup->tc1550) { |
| 754 | HOSTIOPORT0 = setup->io_port; |
| 755 | HOSTIOPORT1 = setup->io_port; |
| 756 | } else { |
| 757 | HOSTIOPORT0 = setup->io_port+0x10; |
| 758 | HOSTIOPORT1 = setup->io_port-0x10; |
| 759 | } |
| 760 | |
| 761 | spin_lock_init(&QLOCK); |
| 762 | RECONNECT = setup->reconnect; |
| 763 | SYNCHRONOUS = setup->synchronous; |
| 764 | PARITY = setup->parity; |
| 765 | DELAY = setup->delay; |
| 766 | EXT_TRANS = setup->ext_trans; |
| 767 | |
| 768 | SETPORT(SCSIID, setup->scsiid << 4); |
| 769 | shpnt->this_id = setup->scsiid; |
| 770 | |
| 771 | if (setup->reconnect) |
| 772 | shpnt->can_queue = AHA152X_MAXQUEUE; |
| 773 | |
| 774 | /* RESET OUT */ |
| 775 | printk("aha152x: resetting bus...\n"); |
| 776 | SETPORT(SCSISEQ, SCSIRSTO); |
| 777 | mdelay(256); |
| 778 | SETPORT(SCSISEQ, 0); |
| 779 | mdelay(DELAY); |
| 780 | |
| 781 | reset_ports(shpnt); |
| 782 | |
| 783 | printk(KERN_INFO |
| 784 | "aha152x%d%s: " |
| 785 | "vital data: rev=%x, " |
| 786 | "io=0x%03lx (0x%03lx/0x%03lx), " |
| 787 | "irq=%d, " |
| 788 | "scsiid=%d, " |
| 789 | "reconnect=%s, " |
| 790 | "parity=%s, " |
| 791 | "synchronous=%s, " |
| 792 | "delay=%d, " |
| 793 | "extended translation=%s\n", |
| 794 | shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "", |
| 795 | GETPORT(REV) & 0x7, |
| 796 | shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1, |
| 797 | shpnt->irq, |
| 798 | shpnt->this_id, |
| 799 | RECONNECT ? "enabled" : "disabled", |
| 800 | PARITY ? "enabled" : "disabled", |
| 801 | SYNCHRONOUS ? "enabled" : "disabled", |
| 802 | DELAY, |
| 803 | EXT_TRANS ? "enabled" : "disabled"); |
| 804 | |
| 805 | /* not expecting any interrupts */ |
| 806 | SETPORT(SIMODE0, 0); |
| 807 | SETPORT(SIMODE1, 0); |
| 808 | |
| 809 | if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) { |
| 810 | printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq); |
| 811 | goto out_host_put; |
| 812 | } |
| 813 | |
| 814 | HOSTDATA(shpnt)->swint = 0; |
| 815 | |
| 816 | printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no); |
| 817 | |
| 818 | mb(); |
| 819 | SETPORT(DMACNTRL0, SWINT|INTEN); |
| 820 | mdelay(1000); |
| 821 | free_irq(shpnt->irq, shpnt); |
| 822 | |
| 823 | if (!HOSTDATA(shpnt)->swint) { |
| 824 | if (TESTHI(DMASTAT, INTSTAT)) { |
| 825 | printk("lost.\n"); |
| 826 | } else { |
| 827 | printk("failed.\n"); |
| 828 | } |
| 829 | |
| 830 | SETPORT(DMACNTRL0, INTEN); |
| 831 | |
| 832 | printk(KERN_ERR "aha152x%d: irq %d possibly wrong. " |
| 833 | "Please verify.\n", shpnt->host_no, shpnt->irq); |
| 834 | goto out_host_put; |
| 835 | } |
| 836 | printk("ok.\n"); |
| 837 | |
| 838 | |
| 839 | /* clear interrupts */ |
| 840 | SETPORT(SSTAT0, 0x7f); |
| 841 | SETPORT(SSTAT1, 0xef); |
| 842 | |
| 843 | if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) { |
| 844 | printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq); |
| 845 | goto out_host_put; |
| 846 | } |
| 847 | |
| 848 | if( scsi_add_host(shpnt, NULL) ) { |
| 849 | free_irq(shpnt->irq, shpnt); |
| 850 | printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no); |
| 851 | goto out_host_put; |
| 852 | } |
| 853 | |
| 854 | scsi_scan_host(shpnt); |
| 855 | |
| 856 | return shpnt; |
| 857 | |
| 858 | out_host_put: |
| 859 | list_del(&HOSTDATA(shpnt)->host_list); |
| 860 | scsi_host_put(shpnt); |
| 861 | |
| 862 | return NULL; |
| 863 | } |
| 864 | |
| 865 | void aha152x_release(struct Scsi_Host *shpnt) |
| 866 | { |
| 867 | if (!shpnt) |
| 868 | return; |
| 869 | |
| 870 | scsi_remove_host(shpnt); |
| 871 | if (shpnt->irq) |
| 872 | free_irq(shpnt->irq, shpnt); |
| 873 | |
| 874 | #if !defined(AHA152X_PCMCIA) |
| 875 | if (shpnt->io_port) |
| 876 | release_region(shpnt->io_port, IO_RANGE); |
| 877 | #endif |
| 878 | |
| 879 | #ifdef __ISAPNP__ |
| 880 | if (HOSTDATA(shpnt)->pnpdev) |
| 881 | pnp_device_detach(HOSTDATA(shpnt)->pnpdev); |
| 882 | #endif |
| 883 | |
| 884 | list_del(&HOSTDATA(shpnt)->host_list); |
| 885 | scsi_host_put(shpnt); |
| 886 | } |
| 887 | |
| 888 | |
| 889 | /* |
| 890 | * setup controller to generate interrupts depending |
| 891 | * on current state (lock has to be acquired) |
| 892 | * |
| 893 | */ |
| 894 | static int setup_expected_interrupts(struct Scsi_Host *shpnt) |
| 895 | { |
| 896 | if(CURRENT_SC) { |
| 897 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 898 | |
| 899 | acp->phase |= 1 << 16; |
| 900 | |
| 901 | if (acp->phase & selecting) { |
| 902 | SETPORT(SSTAT1, SELTO); |
| 903 | SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); |
| 904 | SETPORT(SIMODE1, ENSELTIMO); |
| 905 | } else { |
| 906 | SETPORT(SIMODE0, (acp->phase & spiordy) ? ENSPIORDY : 0); |
| 907 | SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); |
| 908 | } |
| 909 | } else if(STATE==seldi) { |
| 910 | SETPORT(SIMODE0, 0); |
| 911 | SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); |
| 912 | } else { |
| 913 | SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); |
| 914 | SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0)); |
| 915 | } |
| 916 | |
| 917 | if(!HOSTDATA(shpnt)->in_intr) |
| 918 | SETBITS(DMACNTRL0, INTEN); |
| 919 | |
| 920 | return TESTHI(DMASTAT, INTSTAT); |
| 921 | } |
| 922 | |
| 923 | |
| 924 | /* |
| 925 | * Queue a command and setup interrupts for a free bus. |
| 926 | */ |
| 927 | static int aha152x_internal_queue(struct scsi_cmnd *SCpnt, |
| 928 | struct completion *complete, int phase) |
| 929 | { |
| 930 | struct aha152x_cmd_priv *acp = aha152x_priv(SCpnt); |
| 931 | struct Scsi_Host *shpnt = SCpnt->device->host; |
| 932 | unsigned long flags; |
| 933 | |
| 934 | acp->phase = not_issued | phase; |
| 935 | acp->status = 0x1; /* Illegal status by SCSI standard */ |
| 936 | acp->message = 0; |
| 937 | acp->sent_command = 0; |
| 938 | |
| 939 | if (acp->phase & (resetting | check_condition)) { |
| 940 | if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) { |
| 941 | scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); |
| 942 | return FAILED; |
| 943 | } |
| 944 | } else { |
| 945 | SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); |
| 946 | if(!SCpnt->host_scribble) { |
| 947 | scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); |
| 948 | return FAILED; |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | SCNEXT(SCpnt) = NULL; |
| 953 | SCSEM(SCpnt) = complete; |
| 954 | |
| 955 | /* setup scratch area |
| 956 | SCp.ptr : buffer pointer |
| 957 | SCp.this_residual : buffer length |
| 958 | SCp.buffer : next buffer |
| 959 | SCp.phase : current state of the command */ |
| 960 | |
| 961 | if ((phase & resetting) || !scsi_sglist(SCpnt)) { |
| 962 | acp->ptr = NULL; |
| 963 | acp->this_residual = 0; |
| 964 | scsi_set_resid(SCpnt, 0); |
| 965 | acp->buffer = NULL; |
| 966 | } else { |
| 967 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
| 968 | acp->buffer = scsi_sglist(SCpnt); |
| 969 | acp->ptr = SG_ADDRESS(acp->buffer); |
| 970 | acp->this_residual = acp->buffer->length; |
| 971 | } |
| 972 | |
| 973 | DO_LOCK(flags); |
| 974 | |
| 975 | #if defined(AHA152X_STAT) |
| 976 | HOSTDATA(shpnt)->total_commands++; |
| 977 | #endif |
| 978 | |
| 979 | /* Turn led on, when this is the first command. */ |
| 980 | HOSTDATA(shpnt)->commands++; |
| 981 | if (HOSTDATA(shpnt)->commands==1) |
| 982 | SETPORT(PORTA, 1); |
| 983 | |
| 984 | append_SC(&ISSUE_SC, SCpnt); |
| 985 | |
| 986 | if(!HOSTDATA(shpnt)->in_intr) |
| 987 | setup_expected_interrupts(shpnt); |
| 988 | |
| 989 | DO_UNLOCK(flags); |
| 990 | |
| 991 | return 0; |
| 992 | } |
| 993 | |
| 994 | /* |
| 995 | * queue a command |
| 996 | * |
| 997 | */ |
| 998 | static int aha152x_queue_lck(struct scsi_cmnd *SCpnt) |
| 999 | { |
| 1000 | return aha152x_internal_queue(SCpnt, NULL, 0); |
| 1001 | } |
| 1002 | |
| 1003 | static DEF_SCSI_QCMD(aha152x_queue) |
| 1004 | |
| 1005 | |
| 1006 | /* |
| 1007 | * |
| 1008 | */ |
| 1009 | static void reset_done(struct scsi_cmnd *SCpnt) |
| 1010 | { |
| 1011 | if(SCSEM(SCpnt)) { |
| 1012 | complete(SCSEM(SCpnt)); |
| 1013 | } else { |
| 1014 | printk(KERN_ERR "aha152x: reset_done w/o completion\n"); |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | static void aha152x_scsi_done(struct scsi_cmnd *SCpnt) |
| 1019 | { |
| 1020 | if (aha152x_priv(SCpnt)->phase & resetting) |
| 1021 | reset_done(SCpnt); |
| 1022 | else |
| 1023 | scsi_done(SCpnt); |
| 1024 | } |
| 1025 | |
| 1026 | /* |
| 1027 | * Abort a command |
| 1028 | * |
| 1029 | */ |
| 1030 | static int aha152x_abort(struct scsi_cmnd *SCpnt) |
| 1031 | { |
| 1032 | struct Scsi_Host *shpnt = SCpnt->device->host; |
| 1033 | struct scsi_cmnd *ptr; |
| 1034 | unsigned long flags; |
| 1035 | |
| 1036 | DO_LOCK(flags); |
| 1037 | |
| 1038 | ptr=remove_SC(&ISSUE_SC, SCpnt); |
| 1039 | |
| 1040 | if(ptr) { |
| 1041 | HOSTDATA(shpnt)->commands--; |
| 1042 | if (!HOSTDATA(shpnt)->commands) |
| 1043 | SETPORT(PORTA, 0); |
| 1044 | DO_UNLOCK(flags); |
| 1045 | |
| 1046 | kfree(SCpnt->host_scribble); |
| 1047 | SCpnt->host_scribble=NULL; |
| 1048 | |
| 1049 | return SUCCESS; |
| 1050 | } |
| 1051 | |
| 1052 | DO_UNLOCK(flags); |
| 1053 | |
| 1054 | /* |
| 1055 | * FIXME: |
| 1056 | * for current command: queue ABORT for message out and raise ATN |
| 1057 | * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? |
| 1058 | * |
| 1059 | */ |
| 1060 | |
| 1061 | scmd_printk(KERN_ERR, SCpnt, |
| 1062 | "cannot abort running or disconnected command\n"); |
| 1063 | |
| 1064 | return FAILED; |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * Reset a device |
| 1069 | * |
| 1070 | */ |
| 1071 | static int aha152x_device_reset(struct scsi_cmnd * SCpnt) |
| 1072 | { |
| 1073 | struct Scsi_Host *shpnt = SCpnt->device->host; |
| 1074 | DECLARE_COMPLETION(done); |
| 1075 | int ret, issued, disconnected; |
| 1076 | unsigned char old_cmd_len = SCpnt->cmd_len; |
| 1077 | unsigned long flags; |
| 1078 | unsigned long timeleft; |
| 1079 | |
| 1080 | if(CURRENT_SC==SCpnt) { |
| 1081 | scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); |
| 1082 | return FAILED; |
| 1083 | } |
| 1084 | |
| 1085 | DO_LOCK(flags); |
| 1086 | issued = remove_SC(&ISSUE_SC, SCpnt) == NULL; |
| 1087 | disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt); |
| 1088 | DO_UNLOCK(flags); |
| 1089 | |
| 1090 | SCpnt->cmd_len = 0; |
| 1091 | |
| 1092 | aha152x_internal_queue(SCpnt, &done, resetting); |
| 1093 | |
| 1094 | timeleft = wait_for_completion_timeout(&done, 100*HZ); |
| 1095 | if (!timeleft) { |
| 1096 | /* remove command from issue queue */ |
| 1097 | DO_LOCK(flags); |
| 1098 | remove_SC(&ISSUE_SC, SCpnt); |
| 1099 | DO_UNLOCK(flags); |
| 1100 | } |
| 1101 | |
| 1102 | SCpnt->cmd_len = old_cmd_len; |
| 1103 | |
| 1104 | DO_LOCK(flags); |
| 1105 | |
| 1106 | if (aha152x_priv(SCpnt)->phase & resetted) { |
| 1107 | HOSTDATA(shpnt)->commands--; |
| 1108 | if (!HOSTDATA(shpnt)->commands) |
| 1109 | SETPORT(PORTA, 0); |
| 1110 | kfree(SCpnt->host_scribble); |
| 1111 | SCpnt->host_scribble=NULL; |
| 1112 | |
| 1113 | ret = SUCCESS; |
| 1114 | } else { |
| 1115 | /* requeue */ |
| 1116 | if(!issued) { |
| 1117 | append_SC(&ISSUE_SC, SCpnt); |
| 1118 | } else if(disconnected) { |
| 1119 | append_SC(&DISCONNECTED_SC, SCpnt); |
| 1120 | } |
| 1121 | |
| 1122 | ret = FAILED; |
| 1123 | } |
| 1124 | |
| 1125 | DO_UNLOCK(flags); |
| 1126 | return ret; |
| 1127 | } |
| 1128 | |
| 1129 | static void free_hard_reset_SCs(struct Scsi_Host *shpnt, |
| 1130 | struct scsi_cmnd **SCs) |
| 1131 | { |
| 1132 | struct scsi_cmnd *ptr; |
| 1133 | |
| 1134 | ptr=*SCs; |
| 1135 | while(ptr) { |
| 1136 | struct scsi_cmnd *next; |
| 1137 | |
| 1138 | if(SCDATA(ptr)) { |
| 1139 | next = SCNEXT(ptr); |
| 1140 | } else { |
| 1141 | scmd_printk(KERN_DEBUG, ptr, |
| 1142 | "queue corrupted at %p\n", ptr); |
| 1143 | next = NULL; |
| 1144 | } |
| 1145 | |
| 1146 | if (!ptr->device->soft_reset) { |
| 1147 | remove_SC(SCs, ptr); |
| 1148 | HOSTDATA(shpnt)->commands--; |
| 1149 | kfree(ptr->host_scribble); |
| 1150 | ptr->host_scribble=NULL; |
| 1151 | } |
| 1152 | |
| 1153 | ptr = next; |
| 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | /* |
| 1158 | * Reset the bus |
| 1159 | * |
| 1160 | * AIC-6260 has a hard reset (MRST signal), but apparently |
| 1161 | * one cannot trigger it via software. So live with |
| 1162 | * a soft reset; no-one seemed to have cared. |
| 1163 | */ |
| 1164 | static int aha152x_bus_reset_host(struct Scsi_Host *shpnt) |
| 1165 | { |
| 1166 | unsigned long flags; |
| 1167 | |
| 1168 | DO_LOCK(flags); |
| 1169 | |
| 1170 | free_hard_reset_SCs(shpnt, &ISSUE_SC); |
| 1171 | free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); |
| 1172 | |
| 1173 | SETPORT(SCSISEQ, SCSIRSTO); |
| 1174 | mdelay(256); |
| 1175 | SETPORT(SCSISEQ, 0); |
| 1176 | mdelay(DELAY); |
| 1177 | |
| 1178 | setup_expected_interrupts(shpnt); |
| 1179 | if(HOSTDATA(shpnt)->commands==0) |
| 1180 | SETPORT(PORTA, 0); |
| 1181 | |
| 1182 | DO_UNLOCK(flags); |
| 1183 | |
| 1184 | return SUCCESS; |
| 1185 | } |
| 1186 | |
| 1187 | /* |
| 1188 | * Reset the bus |
| 1189 | * |
| 1190 | */ |
| 1191 | static int aha152x_bus_reset(struct scsi_cmnd *SCpnt) |
| 1192 | { |
| 1193 | return aha152x_bus_reset_host(SCpnt->device->host); |
| 1194 | } |
| 1195 | |
| 1196 | /* |
| 1197 | * Restore default values to the AIC-6260 registers and reset the fifos |
| 1198 | * |
| 1199 | */ |
| 1200 | static void reset_ports(struct Scsi_Host *shpnt) |
| 1201 | { |
| 1202 | unsigned long flags; |
| 1203 | |
| 1204 | /* disable interrupts */ |
| 1205 | SETPORT(DMACNTRL0, RSTFIFO); |
| 1206 | |
| 1207 | SETPORT(SCSISEQ, 0); |
| 1208 | |
| 1209 | SETPORT(SXFRCTL1, 0); |
| 1210 | SETPORT(SCSISIG, 0); |
| 1211 | SETRATE(0); |
| 1212 | |
| 1213 | /* clear all interrupt conditions */ |
| 1214 | SETPORT(SSTAT0, 0x7f); |
| 1215 | SETPORT(SSTAT1, 0xef); |
| 1216 | |
| 1217 | SETPORT(SSTAT4, SYNCERR | FWERR | FRERR); |
| 1218 | |
| 1219 | SETPORT(DMACNTRL0, 0); |
| 1220 | SETPORT(DMACNTRL1, 0); |
| 1221 | |
| 1222 | SETPORT(BRSTCNTRL, 0xf1); |
| 1223 | |
| 1224 | /* clear SCSI fifos and transfer count */ |
| 1225 | SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); |
| 1226 | SETPORT(SXFRCTL0, CH1); |
| 1227 | |
| 1228 | DO_LOCK(flags); |
| 1229 | setup_expected_interrupts(shpnt); |
| 1230 | DO_UNLOCK(flags); |
| 1231 | } |
| 1232 | |
| 1233 | /* |
| 1234 | * Reset the host (bus and controller) |
| 1235 | * |
| 1236 | */ |
| 1237 | int aha152x_host_reset_host(struct Scsi_Host *shpnt) |
| 1238 | { |
| 1239 | aha152x_bus_reset_host(shpnt); |
| 1240 | reset_ports(shpnt); |
| 1241 | |
| 1242 | return SUCCESS; |
| 1243 | } |
| 1244 | |
| 1245 | /* |
| 1246 | * Return the "logical geometry" |
| 1247 | * |
| 1248 | */ |
| 1249 | static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
| 1250 | sector_t capacity, int *info_array) |
| 1251 | { |
| 1252 | struct Scsi_Host *shpnt = sdev->host; |
| 1253 | |
| 1254 | /* try default translation */ |
| 1255 | info_array[0] = 64; |
| 1256 | info_array[1] = 32; |
| 1257 | info_array[2] = (unsigned long)capacity / (64 * 32); |
| 1258 | |
| 1259 | /* for disks >1GB do some guessing */ |
| 1260 | if (info_array[2] >= 1024) { |
| 1261 | int info[3]; |
| 1262 | |
| 1263 | /* try to figure out the geometry from the partition table */ |
| 1264 | if (scsicam_bios_param(bdev, capacity, info) < 0 || |
| 1265 | !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) { |
| 1266 | if (EXT_TRANS) { |
| 1267 | printk(KERN_NOTICE |
| 1268 | "aha152x: unable to verify geometry for disk with >1GB.\n" |
| 1269 | " using extended translation.\n"); |
| 1270 | info_array[0] = 255; |
| 1271 | info_array[1] = 63; |
| 1272 | info_array[2] = (unsigned long)capacity / (255 * 63); |
| 1273 | } else { |
| 1274 | printk(KERN_NOTICE |
| 1275 | "aha152x: unable to verify geometry for disk with >1GB.\n" |
| 1276 | " Using default translation. Please verify yourself.\n" |
| 1277 | " Perhaps you need to enable extended translation in the driver.\n" |
| 1278 | " See Documentation/scsi/aha152x.rst for details.\n"); |
| 1279 | } |
| 1280 | } else { |
| 1281 | info_array[0] = info[0]; |
| 1282 | info_array[1] = info[1]; |
| 1283 | info_array[2] = info[2]; |
| 1284 | |
| 1285 | if (info[0] == 255 && !EXT_TRANS) { |
| 1286 | printk(KERN_NOTICE |
| 1287 | "aha152x: current partition table is using extended translation.\n" |
| 1288 | " using it also, although it's not explicitly enabled.\n"); |
| 1289 | } |
| 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | /* |
| 1297 | * Internal done function |
| 1298 | * |
| 1299 | */ |
| 1300 | static void done(struct Scsi_Host *shpnt, unsigned char status_byte, |
| 1301 | unsigned char host_byte) |
| 1302 | { |
| 1303 | if (CURRENT_SC) { |
| 1304 | if(DONE_SC) |
| 1305 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1306 | "there's already a completed command %p " |
| 1307 | "- will cause abort\n", DONE_SC); |
| 1308 | |
| 1309 | DONE_SC = CURRENT_SC; |
| 1310 | CURRENT_SC = NULL; |
| 1311 | set_status_byte(DONE_SC, status_byte); |
| 1312 | set_host_byte(DONE_SC, host_byte); |
| 1313 | } else |
| 1314 | printk(KERN_ERR "aha152x: done() called outside of command\n"); |
| 1315 | } |
| 1316 | |
| 1317 | static struct work_struct aha152x_tq; |
| 1318 | |
| 1319 | /* |
| 1320 | * Run service completions on the card with interrupts enabled. |
| 1321 | * |
| 1322 | */ |
| 1323 | static void run(struct work_struct *work) |
| 1324 | { |
| 1325 | struct aha152x_hostdata *hd; |
| 1326 | |
| 1327 | list_for_each_entry(hd, &aha152x_host_list, host_list) { |
| 1328 | struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); |
| 1329 | |
| 1330 | is_complete(shost); |
| 1331 | } |
| 1332 | } |
| 1333 | |
| 1334 | /* |
| 1335 | * Interrupt handler |
| 1336 | * |
| 1337 | */ |
| 1338 | static irqreturn_t intr(int irqno, void *dev_id) |
| 1339 | { |
| 1340 | struct Scsi_Host *shpnt = dev_id; |
| 1341 | unsigned long flags; |
| 1342 | unsigned char rev, dmacntrl0; |
| 1343 | |
| 1344 | /* |
| 1345 | * Read a couple of registers that are known to not be all 1's. If |
| 1346 | * we read all 1's (-1), that means that either: |
| 1347 | * |
| 1348 | * a. The host adapter chip has gone bad, and we cannot control it, |
| 1349 | * OR |
| 1350 | * b. The host adapter is a PCMCIA card that has been ejected |
| 1351 | * |
| 1352 | * In either case, we cannot do anything with the host adapter at |
| 1353 | * this point in time. So just ignore the interrupt and return. |
| 1354 | * In the latter case, the interrupt might actually be meant for |
| 1355 | * someone else sharing this IRQ, and that driver will handle it. |
| 1356 | */ |
| 1357 | rev = GETPORT(REV); |
| 1358 | dmacntrl0 = GETPORT(DMACNTRL0); |
| 1359 | if ((rev == 0xFF) && (dmacntrl0 == 0xFF)) |
| 1360 | return IRQ_NONE; |
| 1361 | |
| 1362 | if( TESTLO(DMASTAT, INTSTAT) ) |
| 1363 | return IRQ_NONE; |
| 1364 | |
| 1365 | /* no more interrupts from the controller, while we're busy. |
| 1366 | INTEN is restored by the BH handler */ |
| 1367 | CLRBITS(DMACNTRL0, INTEN); |
| 1368 | |
| 1369 | DO_LOCK(flags); |
| 1370 | if( HOSTDATA(shpnt)->service==0 ) { |
| 1371 | HOSTDATA(shpnt)->service=1; |
| 1372 | |
| 1373 | /* Poke the BH handler */ |
| 1374 | INIT_WORK(&aha152x_tq, run); |
| 1375 | schedule_work(&aha152x_tq); |
| 1376 | } |
| 1377 | DO_UNLOCK(flags); |
| 1378 | |
| 1379 | return IRQ_HANDLED; |
| 1380 | } |
| 1381 | |
| 1382 | /* |
| 1383 | * busfree phase |
| 1384 | * - handle completition/disconnection/error of current command |
| 1385 | * - start selection for next command (if any) |
| 1386 | */ |
| 1387 | static void busfree_run(struct Scsi_Host *shpnt) |
| 1388 | { |
| 1389 | unsigned long flags; |
| 1390 | #if defined(AHA152X_STAT) |
| 1391 | int action=0; |
| 1392 | #endif |
| 1393 | |
| 1394 | SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); |
| 1395 | SETPORT(SXFRCTL0, CH1); |
| 1396 | |
| 1397 | SETPORT(SSTAT1, CLRBUSFREE); |
| 1398 | |
| 1399 | if(CURRENT_SC) { |
| 1400 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 1401 | |
| 1402 | #if defined(AHA152X_STAT) |
| 1403 | action++; |
| 1404 | #endif |
| 1405 | acp->phase &= ~syncneg; |
| 1406 | |
| 1407 | if (acp->phase & completed) { |
| 1408 | /* target sent COMMAND COMPLETE */ |
| 1409 | done(shpnt, acp->status, DID_OK); |
| 1410 | |
| 1411 | } else if (acp->phase & aborted) { |
| 1412 | done(shpnt, acp->status, DID_ABORT); |
| 1413 | |
| 1414 | } else if (acp->phase & resetted) { |
| 1415 | done(shpnt, acp->status, DID_RESET); |
| 1416 | |
| 1417 | } else if (acp->phase & disconnected) { |
| 1418 | /* target sent DISCONNECT */ |
| 1419 | #if defined(AHA152X_STAT) |
| 1420 | HOSTDATA(shpnt)->disconnections++; |
| 1421 | #endif |
| 1422 | append_SC(&DISCONNECTED_SC, CURRENT_SC); |
| 1423 | acp->phase |= 1 << 16; |
| 1424 | CURRENT_SC = NULL; |
| 1425 | |
| 1426 | } else { |
| 1427 | done(shpnt, SAM_STAT_GOOD, DID_ERROR); |
| 1428 | } |
| 1429 | #if defined(AHA152X_STAT) |
| 1430 | } else { |
| 1431 | HOSTDATA(shpnt)->busfree_without_old_command++; |
| 1432 | #endif |
| 1433 | } |
| 1434 | |
| 1435 | DO_LOCK(flags); |
| 1436 | |
| 1437 | if(DONE_SC) { |
| 1438 | #if defined(AHA152X_STAT) |
| 1439 | action++; |
| 1440 | #endif |
| 1441 | |
| 1442 | if (aha152x_priv(DONE_SC)->phase & check_condition) { |
| 1443 | struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC; |
| 1444 | struct aha152x_scdata *sc = SCDATA(cmd); |
| 1445 | |
| 1446 | scsi_eh_restore_cmnd(cmd, &sc->ses); |
| 1447 | |
| 1448 | aha152x_priv(cmd)->status = SAM_STAT_CHECK_CONDITION; |
| 1449 | |
| 1450 | HOSTDATA(shpnt)->commands--; |
| 1451 | if (!HOSTDATA(shpnt)->commands) |
| 1452 | SETPORT(PORTA, 0); /* turn led off */ |
| 1453 | } else if (aha152x_priv(DONE_SC)->status == SAM_STAT_CHECK_CONDITION) { |
| 1454 | #if defined(AHA152X_STAT) |
| 1455 | HOSTDATA(shpnt)->busfree_with_check_condition++; |
| 1456 | #endif |
| 1457 | |
| 1458 | if (!(aha152x_priv(DONE_SC)->phase & not_issued)) { |
| 1459 | struct aha152x_scdata *sc; |
| 1460 | struct scsi_cmnd *ptr = DONE_SC; |
| 1461 | DONE_SC=NULL; |
| 1462 | |
| 1463 | sc = SCDATA(ptr); |
| 1464 | /* It was allocated in aha152x_internal_queue? */ |
| 1465 | BUG_ON(!sc); |
| 1466 | scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0); |
| 1467 | |
| 1468 | DO_UNLOCK(flags); |
| 1469 | aha152x_internal_queue(ptr, NULL, check_condition); |
| 1470 | DO_LOCK(flags); |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | if (DONE_SC) { |
| 1475 | struct scsi_cmnd *ptr = DONE_SC; |
| 1476 | DONE_SC=NULL; |
| 1477 | |
| 1478 | /* turn led off, when no commands are in the driver */ |
| 1479 | HOSTDATA(shpnt)->commands--; |
| 1480 | if (!HOSTDATA(shpnt)->commands) |
| 1481 | SETPORT(PORTA, 0); /* turn led off */ |
| 1482 | |
| 1483 | if (!(aha152x_priv(ptr)->phase & resetting)) { |
| 1484 | kfree(ptr->host_scribble); |
| 1485 | ptr->host_scribble=NULL; |
| 1486 | } |
| 1487 | |
| 1488 | DO_UNLOCK(flags); |
| 1489 | aha152x_scsi_done(ptr); |
| 1490 | DO_LOCK(flags); |
| 1491 | } |
| 1492 | |
| 1493 | DONE_SC=NULL; |
| 1494 | #if defined(AHA152X_STAT) |
| 1495 | } else { |
| 1496 | HOSTDATA(shpnt)->busfree_without_done_command++; |
| 1497 | #endif |
| 1498 | } |
| 1499 | |
| 1500 | if(ISSUE_SC) |
| 1501 | CURRENT_SC = remove_first_SC(&ISSUE_SC); |
| 1502 | |
| 1503 | DO_UNLOCK(flags); |
| 1504 | |
| 1505 | if(CURRENT_SC) { |
| 1506 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 1507 | |
| 1508 | #if defined(AHA152X_STAT) |
| 1509 | action++; |
| 1510 | #endif |
| 1511 | acp->phase |= selecting; |
| 1512 | |
| 1513 | /* clear selection timeout */ |
| 1514 | SETPORT(SSTAT1, SELTO); |
| 1515 | |
| 1516 | SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id); |
| 1517 | SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER); |
| 1518 | SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0)); |
| 1519 | } else { |
| 1520 | #if defined(AHA152X_STAT) |
| 1521 | HOSTDATA(shpnt)->busfree_without_new_command++; |
| 1522 | #endif |
| 1523 | SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0); |
| 1524 | } |
| 1525 | |
| 1526 | #if defined(AHA152X_STAT) |
| 1527 | if(!action) |
| 1528 | HOSTDATA(shpnt)->busfree_without_any_action++; |
| 1529 | #endif |
| 1530 | } |
| 1531 | |
| 1532 | /* |
| 1533 | * Selection done (OUT) |
| 1534 | * - queue IDENTIFY message and SDTR to selected target for message out |
| 1535 | * (ATN asserted automagically via ENAUTOATNO in busfree()) |
| 1536 | */ |
| 1537 | static void seldo_run(struct Scsi_Host *shpnt) |
| 1538 | { |
| 1539 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 1540 | |
| 1541 | SETPORT(SCSISIG, 0); |
| 1542 | SETPORT(SSTAT1, CLRBUSFREE); |
| 1543 | SETPORT(SSTAT1, CLRPHASECHG); |
| 1544 | |
| 1545 | acp->phase &= ~(selecting | not_issued); |
| 1546 | |
| 1547 | SETPORT(SCSISEQ, 0); |
| 1548 | |
| 1549 | if (TESTLO(SSTAT0, SELDO)) { |
| 1550 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1551 | "aha152x: passing bus free condition\n"); |
| 1552 | done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); |
| 1553 | return; |
| 1554 | } |
| 1555 | |
| 1556 | SETPORT(SSTAT0, CLRSELDO); |
| 1557 | |
| 1558 | ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); |
| 1559 | |
| 1560 | if (acp->phase & aborting) { |
| 1561 | ADDMSGO(ABORT); |
| 1562 | } else if (acp->phase & resetting) { |
| 1563 | ADDMSGO(BUS_DEVICE_RESET); |
| 1564 | } else if (SYNCNEG==0 && SYNCHRONOUS) { |
| 1565 | acp->phase |= syncneg; |
| 1566 | MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8); |
| 1567 | SYNCNEG=1; /* negotiation in progress */ |
| 1568 | } |
| 1569 | |
| 1570 | SETRATE(SYNCRATE); |
| 1571 | } |
| 1572 | |
| 1573 | /* |
| 1574 | * Selection timeout |
| 1575 | * - return command to mid-level with failure cause |
| 1576 | * |
| 1577 | */ |
| 1578 | static void selto_run(struct Scsi_Host *shpnt) |
| 1579 | { |
| 1580 | struct aha152x_cmd_priv *acp; |
| 1581 | |
| 1582 | SETPORT(SCSISEQ, 0); |
| 1583 | SETPORT(SSTAT1, CLRSELTIMO); |
| 1584 | |
| 1585 | if (!CURRENT_SC) |
| 1586 | return; |
| 1587 | |
| 1588 | acp = aha152x_priv(CURRENT_SC); |
| 1589 | acp->phase &= ~selecting; |
| 1590 | |
| 1591 | if (acp->phase & aborted) |
| 1592 | done(shpnt, SAM_STAT_GOOD, DID_ABORT); |
| 1593 | else if (TESTLO(SSTAT0, SELINGO)) |
| 1594 | done(shpnt, SAM_STAT_GOOD, DID_BUS_BUSY); |
| 1595 | else |
| 1596 | /* ARBITRATION won, but SELECTION failed */ |
| 1597 | done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); |
| 1598 | } |
| 1599 | |
| 1600 | /* |
| 1601 | * Selection in done |
| 1602 | * - put current command back to issue queue |
| 1603 | * (reconnection of a disconnected nexus instead |
| 1604 | * of successful selection out) |
| 1605 | * |
| 1606 | */ |
| 1607 | static void seldi_run(struct Scsi_Host *shpnt) |
| 1608 | { |
| 1609 | int selid; |
| 1610 | int target; |
| 1611 | unsigned long flags; |
| 1612 | |
| 1613 | SETPORT(SCSISIG, 0); |
| 1614 | SETPORT(SSTAT0, CLRSELDI); |
| 1615 | SETPORT(SSTAT1, CLRBUSFREE); |
| 1616 | SETPORT(SSTAT1, CLRPHASECHG); |
| 1617 | |
| 1618 | if(CURRENT_SC) { |
| 1619 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 1620 | |
| 1621 | if (!(acp->phase & not_issued)) |
| 1622 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1623 | "command should not have been issued yet\n"); |
| 1624 | |
| 1625 | DO_LOCK(flags); |
| 1626 | append_SC(&ISSUE_SC, CURRENT_SC); |
| 1627 | DO_UNLOCK(flags); |
| 1628 | |
| 1629 | CURRENT_SC = NULL; |
| 1630 | } |
| 1631 | |
| 1632 | if (!DISCONNECTED_SC) |
| 1633 | return; |
| 1634 | |
| 1635 | RECONN_TARGET=-1; |
| 1636 | |
| 1637 | selid = GETPORT(SELID) & ~(1 << shpnt->this_id); |
| 1638 | |
| 1639 | if (selid==0) { |
| 1640 | shost_printk(KERN_INFO, shpnt, |
| 1641 | "target id unknown (%02x)\n", selid); |
| 1642 | return; |
| 1643 | } |
| 1644 | |
| 1645 | for(target=7; !(selid & (1 << target)); target--) |
| 1646 | ; |
| 1647 | |
| 1648 | if(selid & ~(1 << target)) { |
| 1649 | shost_printk(KERN_INFO, shpnt, |
| 1650 | "multiple targets reconnected (%02x)\n", selid); |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | SETPORT(SCSIID, (shpnt->this_id << OID_) | target); |
| 1655 | SETPORT(SCSISEQ, 0); |
| 1656 | |
| 1657 | SETRATE(HOSTDATA(shpnt)->syncrate[target]); |
| 1658 | |
| 1659 | RECONN_TARGET=target; |
| 1660 | } |
| 1661 | |
| 1662 | /* |
| 1663 | * message in phase |
| 1664 | * - handle initial message after reconnection to identify |
| 1665 | * reconnecting nexus |
| 1666 | * - queue command on DISCONNECTED_SC on DISCONNECT message |
| 1667 | * - set completed flag on COMMAND COMPLETE |
| 1668 | * (other completition code moved to busfree_run) |
| 1669 | * - handle response to SDTR |
| 1670 | * - clear synchronous transfer agreements on BUS RESET |
| 1671 | * |
| 1672 | * FIXME: what about SAVE POINTERS, RESTORE POINTERS? |
| 1673 | * |
| 1674 | */ |
| 1675 | static void msgi_run(struct Scsi_Host *shpnt) |
| 1676 | { |
| 1677 | for(;;) { |
| 1678 | struct aha152x_cmd_priv *acp; |
| 1679 | int sstat1 = GETPORT(SSTAT1); |
| 1680 | |
| 1681 | if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT)) |
| 1682 | return; |
| 1683 | |
| 1684 | if (TESTLO(SSTAT0, SPIORDY)) |
| 1685 | return; |
| 1686 | |
| 1687 | ADDMSGI(GETPORT(SCSIDAT)); |
| 1688 | |
| 1689 | if(!CURRENT_SC) { |
| 1690 | if(LASTSTATE!=seldi) { |
| 1691 | shost_printk(KERN_ERR, shpnt, |
| 1692 | "message in w/o current command" |
| 1693 | " not after reselection\n"); |
| 1694 | } |
| 1695 | |
| 1696 | /* |
| 1697 | * Handle reselection |
| 1698 | */ |
| 1699 | if(!(MSGI(0) & IDENTIFY_BASE)) { |
| 1700 | shost_printk(KERN_ERR, shpnt, |
| 1701 | "target didn't identify after reselection\n"); |
| 1702 | continue; |
| 1703 | } |
| 1704 | |
| 1705 | CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f); |
| 1706 | |
| 1707 | if (!CURRENT_SC) { |
| 1708 | show_queues(shpnt); |
| 1709 | shost_printk(KERN_ERR, shpnt, |
| 1710 | "no disconnected command" |
| 1711 | " for target %d/%d\n", |
| 1712 | RECONN_TARGET, MSGI(0) & 0x3f); |
| 1713 | continue; |
| 1714 | } |
| 1715 | |
| 1716 | acp = aha152x_priv(CURRENT_SC); |
| 1717 | acp->message = MSGI(0); |
| 1718 | acp->phase &= ~disconnected; |
| 1719 | |
| 1720 | MSGILEN=0; |
| 1721 | |
| 1722 | /* next message if any */ |
| 1723 | continue; |
| 1724 | } |
| 1725 | |
| 1726 | acp = aha152x_priv(CURRENT_SC); |
| 1727 | acp->message = MSGI(0); |
| 1728 | |
| 1729 | switch (MSGI(0)) { |
| 1730 | case DISCONNECT: |
| 1731 | if (!RECONNECT) |
| 1732 | scmd_printk(KERN_WARNING, CURRENT_SC, |
| 1733 | "target was not allowed to disconnect\n"); |
| 1734 | |
| 1735 | acp->phase |= disconnected; |
| 1736 | break; |
| 1737 | |
| 1738 | case COMMAND_COMPLETE: |
| 1739 | acp->phase |= completed; |
| 1740 | break; |
| 1741 | |
| 1742 | case MESSAGE_REJECT: |
| 1743 | if (SYNCNEG==1) { |
| 1744 | scmd_printk(KERN_INFO, CURRENT_SC, |
| 1745 | "Synchronous Data Transfer Request" |
| 1746 | " was rejected\n"); |
| 1747 | SYNCNEG=2; /* negotiation completed */ |
| 1748 | } else |
| 1749 | scmd_printk(KERN_INFO, CURRENT_SC, |
| 1750 | "inbound message (MESSAGE REJECT)\n"); |
| 1751 | break; |
| 1752 | |
| 1753 | case SAVE_POINTERS: |
| 1754 | break; |
| 1755 | |
| 1756 | case RESTORE_POINTERS: |
| 1757 | break; |
| 1758 | |
| 1759 | case EXTENDED_MESSAGE: |
| 1760 | if(MSGILEN<2 || MSGILEN<MSGI(1)+2) { |
| 1761 | /* not yet completed */ |
| 1762 | continue; |
| 1763 | } |
| 1764 | |
| 1765 | switch (MSGI(2)) { |
| 1766 | case EXTENDED_SDTR: |
| 1767 | { |
| 1768 | long ticks; |
| 1769 | |
| 1770 | if (MSGI(1) != 3) { |
| 1771 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1772 | "SDTR message length!=3\n"); |
| 1773 | break; |
| 1774 | } |
| 1775 | |
| 1776 | if (!HOSTDATA(shpnt)->synchronous) |
| 1777 | break; |
| 1778 | |
| 1779 | printk(INFO_LEAD, CMDINFO(CURRENT_SC)); |
| 1780 | spi_print_msg(&MSGI(0)); |
| 1781 | printk("\n"); |
| 1782 | |
| 1783 | ticks = (MSGI(3) * 4 + 49) / 50; |
| 1784 | |
| 1785 | if (syncneg) { |
| 1786 | /* negotiation in progress */ |
| 1787 | if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) { |
| 1788 | ADDMSGO(MESSAGE_REJECT); |
| 1789 | scmd_printk(KERN_INFO, |
| 1790 | CURRENT_SC, |
| 1791 | "received Synchronous Data Transfer Request invalid - rejected\n"); |
| 1792 | break; |
| 1793 | } |
| 1794 | |
| 1795 | SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); |
| 1796 | } else if (ticks <= 9 && MSGI(4) >= 1) { |
| 1797 | ADDMSGO(EXTENDED_MESSAGE); |
| 1798 | ADDMSGO(3); |
| 1799 | ADDMSGO(EXTENDED_SDTR); |
| 1800 | if (ticks < 4) { |
| 1801 | ticks = 4; |
| 1802 | ADDMSGO(50); |
| 1803 | } else |
| 1804 | ADDMSGO(MSGI(3)); |
| 1805 | |
| 1806 | if (MSGI(4) > 8) |
| 1807 | MSGI(4) = 8; |
| 1808 | |
| 1809 | ADDMSGO(MSGI(4)); |
| 1810 | |
| 1811 | SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); |
| 1812 | } else { |
| 1813 | /* requested SDTR is too slow, do it asynchronously */ |
| 1814 | scmd_printk(KERN_INFO, |
| 1815 | CURRENT_SC, |
| 1816 | "Synchronous Data Transfer Request too slow - Rejecting\n"); |
| 1817 | ADDMSGO(MESSAGE_REJECT); |
| 1818 | } |
| 1819 | |
| 1820 | /* negotiation completed */ |
| 1821 | SYNCNEG=2; |
| 1822 | SETRATE(SYNCRATE); |
| 1823 | } |
| 1824 | break; |
| 1825 | |
| 1826 | case BUS_DEVICE_RESET: |
| 1827 | { |
| 1828 | int i; |
| 1829 | |
| 1830 | for(i=0; i<8; i++) { |
| 1831 | HOSTDATA(shpnt)->syncrate[i]=0; |
| 1832 | HOSTDATA(shpnt)->syncneg[i]=0; |
| 1833 | } |
| 1834 | |
| 1835 | } |
| 1836 | break; |
| 1837 | |
| 1838 | case EXTENDED_MODIFY_DATA_POINTER: |
| 1839 | case EXTENDED_EXTENDED_IDENTIFY: |
| 1840 | case EXTENDED_WDTR: |
| 1841 | default: |
| 1842 | ADDMSGO(MESSAGE_REJECT); |
| 1843 | break; |
| 1844 | } |
| 1845 | break; |
| 1846 | } |
| 1847 | |
| 1848 | MSGILEN=0; |
| 1849 | } |
| 1850 | } |
| 1851 | |
| 1852 | static void msgi_end(struct Scsi_Host *shpnt) |
| 1853 | { |
| 1854 | if(MSGILEN>0) |
| 1855 | scmd_printk(KERN_WARNING, CURRENT_SC, |
| 1856 | "target left before message completed (%d)\n", |
| 1857 | MSGILEN); |
| 1858 | |
| 1859 | if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) |
| 1860 | SETPORT(SCSISIG, P_MSGI | SIG_ATNO); |
| 1861 | } |
| 1862 | |
| 1863 | /* |
| 1864 | * message out phase |
| 1865 | * |
| 1866 | */ |
| 1867 | static void msgo_init(struct Scsi_Host *shpnt) |
| 1868 | { |
| 1869 | if(MSGOLEN==0) { |
| 1870 | if ((aha152x_priv(CURRENT_SC)->phase & syncneg) && |
| 1871 | SYNCNEG == 2 && SYNCRATE == 0) { |
| 1872 | ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); |
| 1873 | } else { |
| 1874 | scmd_printk(KERN_INFO, CURRENT_SC, |
| 1875 | "unexpected MESSAGE OUT phase; rejecting\n"); |
| 1876 | ADDMSGO(MESSAGE_REJECT); |
| 1877 | } |
| 1878 | } |
| 1879 | |
| 1880 | } |
| 1881 | |
| 1882 | /* |
| 1883 | * message out phase |
| 1884 | * |
| 1885 | */ |
| 1886 | static void msgo_run(struct Scsi_Host *shpnt) |
| 1887 | { |
| 1888 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 1889 | |
| 1890 | while(MSGO_I<MSGOLEN) { |
| 1891 | if (TESTLO(SSTAT0, SPIORDY)) |
| 1892 | return; |
| 1893 | |
| 1894 | if (MSGO_I==MSGOLEN-1) { |
| 1895 | /* Leave MESSAGE OUT after transfer */ |
| 1896 | SETPORT(SSTAT1, CLRATNO); |
| 1897 | } |
| 1898 | |
| 1899 | |
| 1900 | if (MSGO(MSGO_I) & IDENTIFY_BASE) |
| 1901 | acp->phase |= identified; |
| 1902 | |
| 1903 | if (MSGO(MSGO_I)==ABORT) |
| 1904 | acp->phase |= aborted; |
| 1905 | |
| 1906 | if (MSGO(MSGO_I)==BUS_DEVICE_RESET) |
| 1907 | acp->phase |= resetted; |
| 1908 | |
| 1909 | SETPORT(SCSIDAT, MSGO(MSGO_I++)); |
| 1910 | } |
| 1911 | } |
| 1912 | |
| 1913 | static void msgo_end(struct Scsi_Host *shpnt) |
| 1914 | { |
| 1915 | if(MSGO_I<MSGOLEN) { |
| 1916 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1917 | "message sent incompletely (%d/%d)\n", |
| 1918 | MSGO_I, MSGOLEN); |
| 1919 | if(SYNCNEG==1) { |
| 1920 | scmd_printk(KERN_INFO, CURRENT_SC, |
| 1921 | "Synchronous Data Transfer Request was rejected\n"); |
| 1922 | SYNCNEG=2; |
| 1923 | } |
| 1924 | } |
| 1925 | |
| 1926 | MSGO_I = 0; |
| 1927 | MSGOLEN = 0; |
| 1928 | } |
| 1929 | |
| 1930 | /* |
| 1931 | * command phase |
| 1932 | * |
| 1933 | */ |
| 1934 | static void cmd_init(struct Scsi_Host *shpnt) |
| 1935 | { |
| 1936 | if (aha152x_priv(CURRENT_SC)->sent_command) { |
| 1937 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1938 | "command already sent\n"); |
| 1939 | done(shpnt, SAM_STAT_GOOD, DID_ERROR); |
| 1940 | return; |
| 1941 | } |
| 1942 | |
| 1943 | CMD_I=0; |
| 1944 | } |
| 1945 | |
| 1946 | /* |
| 1947 | * command phase |
| 1948 | * |
| 1949 | */ |
| 1950 | static void cmd_run(struct Scsi_Host *shpnt) |
| 1951 | { |
| 1952 | while(CMD_I<CURRENT_SC->cmd_len) { |
| 1953 | if (TESTLO(SSTAT0, SPIORDY)) |
| 1954 | return; |
| 1955 | |
| 1956 | SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | static void cmd_end(struct Scsi_Host *shpnt) |
| 1961 | { |
| 1962 | if(CMD_I<CURRENT_SC->cmd_len) |
| 1963 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 1964 | "command sent incompletely (%d/%d)\n", |
| 1965 | CMD_I, CURRENT_SC->cmd_len); |
| 1966 | else |
| 1967 | aha152x_priv(CURRENT_SC)->sent_command++; |
| 1968 | } |
| 1969 | |
| 1970 | /* |
| 1971 | * status phase |
| 1972 | * |
| 1973 | */ |
| 1974 | static void status_run(struct Scsi_Host *shpnt) |
| 1975 | { |
| 1976 | if (TESTLO(SSTAT0, SPIORDY)) |
| 1977 | return; |
| 1978 | |
| 1979 | aha152x_priv(CURRENT_SC)->status = GETPORT(SCSIDAT); |
| 1980 | |
| 1981 | } |
| 1982 | |
| 1983 | /* |
| 1984 | * data in phase |
| 1985 | * |
| 1986 | */ |
| 1987 | static void datai_init(struct Scsi_Host *shpnt) |
| 1988 | { |
| 1989 | SETPORT(DMACNTRL0, RSTFIFO); |
| 1990 | SETPORT(DMACNTRL0, RSTFIFO|ENDMA); |
| 1991 | |
| 1992 | SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| 1993 | SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); |
| 1994 | |
| 1995 | SETPORT(SIMODE0, 0); |
| 1996 | SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE); |
| 1997 | |
| 1998 | DATA_LEN=0; |
| 1999 | } |
| 2000 | |
| 2001 | static void datai_run(struct Scsi_Host *shpnt) |
| 2002 | { |
| 2003 | struct aha152x_cmd_priv *acp; |
| 2004 | unsigned long the_time; |
| 2005 | int fifodata, data_count; |
| 2006 | |
| 2007 | /* |
| 2008 | * loop while the phase persists or the fifos are not empty |
| 2009 | * |
| 2010 | */ |
| 2011 | while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) { |
| 2012 | /* FIXME: maybe this should be done by setting up |
| 2013 | * STCNT to trigger ENSWRAP interrupt, instead of |
| 2014 | * polling for DFIFOFULL |
| 2015 | */ |
| 2016 | the_time=jiffies + 100*HZ; |
| 2017 | while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time)) |
| 2018 | barrier(); |
| 2019 | |
| 2020 | if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) { |
| 2021 | scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n"); |
| 2022 | break; |
| 2023 | } |
| 2024 | |
| 2025 | if(TESTHI(DMASTAT, DFIFOFULL)) { |
| 2026 | fifodata = 128; |
| 2027 | } else { |
| 2028 | the_time=jiffies + 100*HZ; |
| 2029 | while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time)) |
| 2030 | barrier(); |
| 2031 | |
| 2032 | if(TESTLO(SSTAT2, SEMPTY)) { |
| 2033 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2034 | "datai sempty timeout"); |
| 2035 | break; |
| 2036 | } |
| 2037 | |
| 2038 | fifodata = GETPORT(FIFOSTAT); |
| 2039 | } |
| 2040 | |
| 2041 | acp = aha152x_priv(CURRENT_SC); |
| 2042 | if (acp->this_residual > 0) { |
| 2043 | while (fifodata > 0 && acp->this_residual > 0) { |
| 2044 | data_count = fifodata > acp->this_residual ? |
| 2045 | acp->this_residual : fifodata; |
| 2046 | fifodata -= data_count; |
| 2047 | |
| 2048 | if (data_count & 1) { |
| 2049 | SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| 2050 | *acp->ptr++ = GETPORT(DATAPORT); |
| 2051 | acp->this_residual--; |
| 2052 | DATA_LEN++; |
| 2053 | SETPORT(DMACNTRL0, ENDMA); |
| 2054 | } |
| 2055 | |
| 2056 | if (data_count > 1) { |
| 2057 | data_count >>= 1; |
| 2058 | insw(DATAPORT, acp->ptr, data_count); |
| 2059 | acp->ptr += 2 * data_count; |
| 2060 | acp->this_residual -= 2 * data_count; |
| 2061 | DATA_LEN += 2 * data_count; |
| 2062 | } |
| 2063 | |
| 2064 | if (acp->this_residual == 0 && |
| 2065 | !sg_is_last(acp->buffer)) { |
| 2066 | /* advance to next buffer */ |
| 2067 | acp->buffer = sg_next(acp->buffer); |
| 2068 | acp->ptr = SG_ADDRESS(acp->buffer); |
| 2069 | acp->this_residual = acp->buffer->length; |
| 2070 | } |
| 2071 | } |
| 2072 | } else if (fifodata > 0) { |
| 2073 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2074 | "no buffers left for %d(%d) bytes" |
| 2075 | " (data overrun!?)\n", |
| 2076 | fifodata, GETPORT(FIFOSTAT)); |
| 2077 | SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| 2078 | while(fifodata>0) { |
| 2079 | GETPORT(DATAPORT); |
| 2080 | fifodata--; |
| 2081 | DATA_LEN++; |
| 2082 | } |
| 2083 | SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| 2084 | } |
| 2085 | } |
| 2086 | |
| 2087 | if(TESTLO(DMASTAT, INTSTAT) || |
| 2088 | TESTLO(DMASTAT, DFIFOEMP) || |
| 2089 | TESTLO(SSTAT2, SEMPTY) || |
| 2090 | GETPORT(FIFOSTAT)>0) { |
| 2091 | /* |
| 2092 | * something went wrong, if there's something left in the fifos |
| 2093 | * or the phase didn't change |
| 2094 | */ |
| 2095 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2096 | "fifos should be empty and phase should have changed\n"); |
| 2097 | } |
| 2098 | |
| 2099 | if(DATA_LEN!=GETSTCNT()) { |
| 2100 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2101 | "manual transfer count differs from automatic " |
| 2102 | "(count=%d;stcnt=%d;diff=%d;fifostat=%d)", |
| 2103 | DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, |
| 2104 | GETPORT(FIFOSTAT)); |
| 2105 | mdelay(10000); |
| 2106 | } |
| 2107 | } |
| 2108 | |
| 2109 | static void datai_end(struct Scsi_Host *shpnt) |
| 2110 | { |
| 2111 | CMD_INC_RESID(CURRENT_SC, -GETSTCNT()); |
| 2112 | |
| 2113 | SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| 2114 | SETPORT(DMACNTRL0, 0); |
| 2115 | } |
| 2116 | |
| 2117 | /* |
| 2118 | * data out phase |
| 2119 | * |
| 2120 | */ |
| 2121 | static void datao_init(struct Scsi_Host *shpnt) |
| 2122 | { |
| 2123 | SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO); |
| 2124 | SETPORT(DMACNTRL0, WRITE_READ | ENDMA); |
| 2125 | |
| 2126 | SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| 2127 | SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); |
| 2128 | |
| 2129 | SETPORT(SIMODE0, 0); |
| 2130 | SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE ); |
| 2131 | |
| 2132 | DATA_LEN = scsi_get_resid(CURRENT_SC); |
| 2133 | } |
| 2134 | |
| 2135 | static void datao_run(struct Scsi_Host *shpnt) |
| 2136 | { |
| 2137 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 2138 | unsigned long the_time; |
| 2139 | int data_count; |
| 2140 | |
| 2141 | /* until phase changes or all data sent */ |
| 2142 | while (TESTLO(DMASTAT, INTSTAT) && acp->this_residual > 0) { |
| 2143 | data_count = 128; |
| 2144 | if (data_count > acp->this_residual) |
| 2145 | data_count = acp->this_residual; |
| 2146 | |
| 2147 | if(TESTLO(DMASTAT, DFIFOEMP)) { |
| 2148 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2149 | "datao fifo not empty (%d)", |
| 2150 | GETPORT(FIFOSTAT)); |
| 2151 | break; |
| 2152 | } |
| 2153 | |
| 2154 | if(data_count & 1) { |
| 2155 | SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT); |
| 2156 | SETPORT(DATAPORT, *acp->ptr++); |
| 2157 | acp->this_residual--; |
| 2158 | CMD_INC_RESID(CURRENT_SC, -1); |
| 2159 | SETPORT(DMACNTRL0,WRITE_READ|ENDMA); |
| 2160 | } |
| 2161 | |
| 2162 | if(data_count > 1) { |
| 2163 | data_count >>= 1; |
| 2164 | outsw(DATAPORT, acp->ptr, data_count); |
| 2165 | acp->ptr += 2 * data_count; |
| 2166 | acp->this_residual -= 2 * data_count; |
| 2167 | CMD_INC_RESID(CURRENT_SC, -2 * data_count); |
| 2168 | } |
| 2169 | |
| 2170 | if (acp->this_residual == 0 && !sg_is_last(acp->buffer)) { |
| 2171 | /* advance to next buffer */ |
| 2172 | acp->buffer = sg_next(acp->buffer); |
| 2173 | acp->ptr = SG_ADDRESS(acp->buffer); |
| 2174 | acp->this_residual = acp->buffer->length; |
| 2175 | } |
| 2176 | |
| 2177 | the_time=jiffies + 100*HZ; |
| 2178 | while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time)) |
| 2179 | barrier(); |
| 2180 | |
| 2181 | if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) { |
| 2182 | scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n"); |
| 2183 | break; |
| 2184 | } |
| 2185 | } |
| 2186 | } |
| 2187 | |
| 2188 | static void datao_end(struct Scsi_Host *shpnt) |
| 2189 | { |
| 2190 | struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC); |
| 2191 | |
| 2192 | if(TESTLO(DMASTAT, DFIFOEMP)) { |
| 2193 | u32 datao_cnt = GETSTCNT(); |
| 2194 | int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC); |
| 2195 | int done; |
| 2196 | struct scatterlist *sg = scsi_sglist(CURRENT_SC); |
| 2197 | |
| 2198 | CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt); |
| 2199 | |
| 2200 | done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC); |
| 2201 | /* Locate the first SG entry not yet sent */ |
| 2202 | while (done > 0 && !sg_is_last(sg)) { |
| 2203 | if (done < sg->length) |
| 2204 | break; |
| 2205 | done -= sg->length; |
| 2206 | sg = sg_next(sg); |
| 2207 | } |
| 2208 | |
| 2209 | acp->buffer = sg; |
| 2210 | acp->ptr = SG_ADDRESS(acp->buffer) + done; |
| 2211 | acp->this_residual = acp->buffer->length - done; |
| 2212 | } |
| 2213 | |
| 2214 | SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); |
| 2215 | SETPORT(SXFRCTL0, CH1); |
| 2216 | |
| 2217 | SETPORT(DMACNTRL0, 0); |
| 2218 | } |
| 2219 | |
| 2220 | /* |
| 2221 | * figure out what state we're in |
| 2222 | * |
| 2223 | */ |
| 2224 | static int update_state(struct Scsi_Host *shpnt) |
| 2225 | { |
| 2226 | int dataphase=0; |
| 2227 | unsigned int stat0 = GETPORT(SSTAT0); |
| 2228 | unsigned int stat1 = GETPORT(SSTAT1); |
| 2229 | |
| 2230 | PREVSTATE = STATE; |
| 2231 | STATE=unknown; |
| 2232 | |
| 2233 | if(stat1 & SCSIRSTI) { |
| 2234 | STATE=rsti; |
| 2235 | SETPORT(SCSISEQ,0); |
| 2236 | SETPORT(SSTAT1,SCSIRSTI); |
| 2237 | } else if (stat0 & SELDI && PREVSTATE == busfree) { |
| 2238 | STATE=seldi; |
| 2239 | } else if (stat0 & SELDO && CURRENT_SC && |
| 2240 | (aha152x_priv(CURRENT_SC)->phase & selecting)) { |
| 2241 | STATE=seldo; |
| 2242 | } else if(stat1 & SELTO) { |
| 2243 | STATE=selto; |
| 2244 | } else if(stat1 & BUSFREE) { |
| 2245 | STATE=busfree; |
| 2246 | SETPORT(SSTAT1,BUSFREE); |
| 2247 | } else if(stat1 & SCSIPERR) { |
| 2248 | STATE=parerr; |
| 2249 | SETPORT(SSTAT1,SCSIPERR); |
| 2250 | } else if(stat1 & REQINIT) { |
| 2251 | switch(GETPORT(SCSISIG) & P_MASK) { |
| 2252 | case P_MSGI: STATE=msgi; break; |
| 2253 | case P_MSGO: STATE=msgo; break; |
| 2254 | case P_DATAO: STATE=datao; break; |
| 2255 | case P_DATAI: STATE=datai; break; |
| 2256 | case P_STATUS: STATE=status; break; |
| 2257 | case P_CMD: STATE=cmd; break; |
| 2258 | } |
| 2259 | dataphase=1; |
| 2260 | } |
| 2261 | |
| 2262 | if((stat0 & SELDI) && STATE!=seldi && !dataphase) { |
| 2263 | scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?"); |
| 2264 | } |
| 2265 | |
| 2266 | if(STATE!=PREVSTATE) { |
| 2267 | LASTSTATE=PREVSTATE; |
| 2268 | } |
| 2269 | |
| 2270 | return dataphase; |
| 2271 | } |
| 2272 | |
| 2273 | /* |
| 2274 | * handle parity error |
| 2275 | * |
| 2276 | * FIXME: in which phase? |
| 2277 | * |
| 2278 | */ |
| 2279 | static void parerr_run(struct Scsi_Host *shpnt) |
| 2280 | { |
| 2281 | scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n"); |
| 2282 | done(shpnt, SAM_STAT_GOOD, DID_PARITY); |
| 2283 | } |
| 2284 | |
| 2285 | /* |
| 2286 | * handle reset in |
| 2287 | * |
| 2288 | */ |
| 2289 | static void rsti_run(struct Scsi_Host *shpnt) |
| 2290 | { |
| 2291 | struct scsi_cmnd *ptr; |
| 2292 | |
| 2293 | shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n"); |
| 2294 | |
| 2295 | ptr=DISCONNECTED_SC; |
| 2296 | while(ptr) { |
| 2297 | struct scsi_cmnd *next = SCNEXT(ptr); |
| 2298 | |
| 2299 | if (!ptr->device->soft_reset) { |
| 2300 | remove_SC(&DISCONNECTED_SC, ptr); |
| 2301 | |
| 2302 | kfree(ptr->host_scribble); |
| 2303 | ptr->host_scribble=NULL; |
| 2304 | |
| 2305 | set_host_byte(ptr, DID_RESET); |
| 2306 | aha152x_scsi_done(ptr); |
| 2307 | } |
| 2308 | |
| 2309 | ptr = next; |
| 2310 | } |
| 2311 | |
| 2312 | if(CURRENT_SC && !CURRENT_SC->device->soft_reset) |
| 2313 | done(shpnt, SAM_STAT_GOOD, DID_RESET); |
| 2314 | } |
| 2315 | |
| 2316 | |
| 2317 | /* |
| 2318 | * bottom-half handler |
| 2319 | * |
| 2320 | */ |
| 2321 | static void is_complete(struct Scsi_Host *shpnt) |
| 2322 | { |
| 2323 | int dataphase; |
| 2324 | unsigned long flags; |
| 2325 | int pending; |
| 2326 | |
| 2327 | if(!shpnt) |
| 2328 | return; |
| 2329 | |
| 2330 | DO_LOCK(flags); |
| 2331 | |
| 2332 | if( HOSTDATA(shpnt)->service==0 ) { |
| 2333 | DO_UNLOCK(flags); |
| 2334 | return; |
| 2335 | } |
| 2336 | |
| 2337 | HOSTDATA(shpnt)->service = 0; |
| 2338 | |
| 2339 | if(HOSTDATA(shpnt)->in_intr) { |
| 2340 | DO_UNLOCK(flags); |
| 2341 | /* aha152x_error never returns.. */ |
| 2342 | aha152x_error(shpnt, "bottom-half already running!?"); |
| 2343 | } |
| 2344 | HOSTDATA(shpnt)->in_intr++; |
| 2345 | |
| 2346 | /* |
| 2347 | * loop while there are interrupt conditions pending |
| 2348 | * |
| 2349 | */ |
| 2350 | do { |
| 2351 | unsigned long start = jiffies; |
| 2352 | DO_UNLOCK(flags); |
| 2353 | |
| 2354 | dataphase=update_state(shpnt); |
| 2355 | |
| 2356 | /* |
| 2357 | * end previous state |
| 2358 | * |
| 2359 | */ |
| 2360 | if(PREVSTATE!=STATE && states[PREVSTATE].end) |
| 2361 | states[PREVSTATE].end(shpnt); |
| 2362 | |
| 2363 | /* |
| 2364 | * disable SPIO mode if previous phase used it |
| 2365 | * and this one doesn't |
| 2366 | * |
| 2367 | */ |
| 2368 | if(states[PREVSTATE].spio && !states[STATE].spio) { |
| 2369 | SETPORT(SXFRCTL0, CH1); |
| 2370 | SETPORT(DMACNTRL0, 0); |
| 2371 | if(CURRENT_SC) |
| 2372 | aha152x_priv(CURRENT_SC)->phase &= ~spiordy; |
| 2373 | } |
| 2374 | |
| 2375 | /* |
| 2376 | * accept current dataphase phase |
| 2377 | * |
| 2378 | */ |
| 2379 | if(dataphase) { |
| 2380 | SETPORT(SSTAT0, REQINIT); |
| 2381 | SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK); |
| 2382 | SETPORT(SSTAT1, PHASECHG); |
| 2383 | } |
| 2384 | |
| 2385 | /* |
| 2386 | * enable SPIO mode if previous didn't use it |
| 2387 | * and this one does |
| 2388 | * |
| 2389 | */ |
| 2390 | if(!states[PREVSTATE].spio && states[STATE].spio) { |
| 2391 | SETPORT(DMACNTRL0, 0); |
| 2392 | SETPORT(SXFRCTL0, CH1|SPIOEN); |
| 2393 | if(CURRENT_SC) |
| 2394 | aha152x_priv(CURRENT_SC)->phase |= spiordy; |
| 2395 | } |
| 2396 | |
| 2397 | /* |
| 2398 | * initialize for new state |
| 2399 | * |
| 2400 | */ |
| 2401 | if(PREVSTATE!=STATE && states[STATE].init) |
| 2402 | states[STATE].init(shpnt); |
| 2403 | |
| 2404 | /* |
| 2405 | * handle current state |
| 2406 | * |
| 2407 | */ |
| 2408 | if(states[STATE].run) |
| 2409 | states[STATE].run(shpnt); |
| 2410 | else |
| 2411 | scmd_printk(KERN_ERR, CURRENT_SC, |
| 2412 | "unexpected state (%x)\n", STATE); |
| 2413 | |
| 2414 | /* |
| 2415 | * setup controller to interrupt on |
| 2416 | * the next expected condition and |
| 2417 | * loop if it's already there |
| 2418 | * |
| 2419 | */ |
| 2420 | DO_LOCK(flags); |
| 2421 | pending=setup_expected_interrupts(shpnt); |
| 2422 | #if defined(AHA152X_STAT) |
| 2423 | HOSTDATA(shpnt)->count[STATE]++; |
| 2424 | if(PREVSTATE!=STATE) |
| 2425 | HOSTDATA(shpnt)->count_trans[STATE]++; |
| 2426 | HOSTDATA(shpnt)->time[STATE] += jiffies-start; |
| 2427 | #endif |
| 2428 | |
| 2429 | } while(pending); |
| 2430 | |
| 2431 | /* |
| 2432 | * enable interrupts and leave bottom-half |
| 2433 | * |
| 2434 | */ |
| 2435 | HOSTDATA(shpnt)->in_intr--; |
| 2436 | SETBITS(DMACNTRL0, INTEN); |
| 2437 | DO_UNLOCK(flags); |
| 2438 | } |
| 2439 | |
| 2440 | |
| 2441 | /* |
| 2442 | * Dump the current driver status and panic |
| 2443 | */ |
| 2444 | static void aha152x_error(struct Scsi_Host *shpnt, char *msg) |
| 2445 | { |
| 2446 | shost_printk(KERN_EMERG, shpnt, "%s\n", msg); |
| 2447 | show_queues(shpnt); |
| 2448 | panic("aha152x panic\n"); |
| 2449 | } |
| 2450 | |
| 2451 | /* |
| 2452 | * display enabled interrupts |
| 2453 | */ |
| 2454 | static void disp_enintr(struct Scsi_Host *shpnt) |
| 2455 | { |
| 2456 | int s0, s1; |
| 2457 | |
| 2458 | s0 = GETPORT(SIMODE0); |
| 2459 | s1 = GETPORT(SIMODE1); |
| 2460 | |
| 2461 | shost_printk(KERN_DEBUG, shpnt, |
| 2462 | "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", |
| 2463 | (s0 & ENSELDO) ? "ENSELDO " : "", |
| 2464 | (s0 & ENSELDI) ? "ENSELDI " : "", |
| 2465 | (s0 & ENSELINGO) ? "ENSELINGO " : "", |
| 2466 | (s0 & ENSWRAP) ? "ENSWRAP " : "", |
| 2467 | (s0 & ENSDONE) ? "ENSDONE " : "", |
| 2468 | (s0 & ENSPIORDY) ? "ENSPIORDY " : "", |
| 2469 | (s0 & ENDMADONE) ? "ENDMADONE " : "", |
| 2470 | (s1 & ENSELTIMO) ? "ENSELTIMO " : "", |
| 2471 | (s1 & ENATNTARG) ? "ENATNTARG " : "", |
| 2472 | (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "", |
| 2473 | (s1 & ENBUSFREE) ? "ENBUSFREE " : "", |
| 2474 | (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "", |
| 2475 | (s1 & ENPHASECHG) ? "ENPHASECHG " : "", |
| 2476 | (s1 & ENREQINIT) ? "ENREQINIT " : ""); |
| 2477 | } |
| 2478 | |
| 2479 | /* |
| 2480 | * Show the command data of a command |
| 2481 | */ |
| 2482 | static void show_command(struct scsi_cmnd *ptr) |
| 2483 | { |
| 2484 | const int phase = aha152x_priv(ptr)->phase; |
| 2485 | |
| 2486 | scsi_print_command(ptr); |
| 2487 | scmd_printk(KERN_DEBUG, ptr, |
| 2488 | "request_bufflen=%d; resid=%d; " |
| 2489 | "phase |%s%s%s%s%s%s%s%s%s; next=0x%p", |
| 2490 | scsi_bufflen(ptr), scsi_get_resid(ptr), |
| 2491 | phase & not_issued ? "not issued|" : "", |
| 2492 | phase & selecting ? "selecting|" : "", |
| 2493 | phase & identified ? "identified|" : "", |
| 2494 | phase & disconnected ? "disconnected|" : "", |
| 2495 | phase & completed ? "completed|" : "", |
| 2496 | phase & spiordy ? "spiordy|" : "", |
| 2497 | phase & syncneg ? "syncneg|" : "", |
| 2498 | phase & aborted ? "aborted|" : "", |
| 2499 | phase & resetted ? "resetted|" : "", |
| 2500 | SCDATA(ptr) ? SCNEXT(ptr) : NULL); |
| 2501 | } |
| 2502 | |
| 2503 | /* |
| 2504 | * Dump the queued data |
| 2505 | */ |
| 2506 | static void show_queues(struct Scsi_Host *shpnt) |
| 2507 | { |
| 2508 | struct scsi_cmnd *ptr; |
| 2509 | unsigned long flags; |
| 2510 | |
| 2511 | DO_LOCK(flags); |
| 2512 | printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n"); |
| 2513 | for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) |
| 2514 | show_command(ptr); |
| 2515 | DO_UNLOCK(flags); |
| 2516 | |
| 2517 | printk(KERN_DEBUG "current_SC:\n"); |
| 2518 | if (CURRENT_SC) |
| 2519 | show_command(CURRENT_SC); |
| 2520 | else |
| 2521 | printk(KERN_DEBUG "none\n"); |
| 2522 | |
| 2523 | printk(KERN_DEBUG "disconnected_SC:\n"); |
| 2524 | for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL) |
| 2525 | show_command(ptr); |
| 2526 | |
| 2527 | disp_enintr(shpnt); |
| 2528 | } |
| 2529 | |
| 2530 | static void get_command(struct seq_file *m, struct scsi_cmnd * ptr) |
| 2531 | { |
| 2532 | struct aha152x_cmd_priv *acp = aha152x_priv(ptr); |
| 2533 | const int phase = acp->phase; |
| 2534 | int i; |
| 2535 | |
| 2536 | seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ", |
| 2537 | ptr, ptr->device->id, (u8)ptr->device->lun); |
| 2538 | |
| 2539 | for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) |
| 2540 | seq_printf(m, "0x%02x ", ptr->cmnd[i]); |
| 2541 | |
| 2542 | seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |", |
| 2543 | scsi_get_resid(ptr), acp->this_residual, |
| 2544 | sg_nents(acp->buffer) - 1); |
| 2545 | |
| 2546 | if (phase & not_issued) |
| 2547 | seq_puts(m, "not issued|"); |
| 2548 | if (phase & selecting) |
| 2549 | seq_puts(m, "selecting|"); |
| 2550 | if (phase & disconnected) |
| 2551 | seq_puts(m, "disconnected|"); |
| 2552 | if (phase & aborted) |
| 2553 | seq_puts(m, "aborted|"); |
| 2554 | if (phase & identified) |
| 2555 | seq_puts(m, "identified|"); |
| 2556 | if (phase & completed) |
| 2557 | seq_puts(m, "completed|"); |
| 2558 | if (phase & spiordy) |
| 2559 | seq_puts(m, "spiordy|"); |
| 2560 | if (phase & syncneg) |
| 2561 | seq_puts(m, "syncneg|"); |
| 2562 | seq_printf(m, "; next=0x%p\n", SCNEXT(ptr)); |
| 2563 | } |
| 2564 | |
| 2565 | static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt) |
| 2566 | { |
| 2567 | int s; |
| 2568 | |
| 2569 | seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); |
| 2570 | |
| 2571 | s = GETPORT(SCSISEQ); |
| 2572 | seq_puts(m, "SCSISEQ( "); |
| 2573 | if (s & TEMODEO) |
| 2574 | seq_puts(m, "TARGET MODE "); |
| 2575 | if (s & ENSELO) |
| 2576 | seq_puts(m, "SELO "); |
| 2577 | if (s & ENSELI) |
| 2578 | seq_puts(m, "SELI "); |
| 2579 | if (s & ENRESELI) |
| 2580 | seq_puts(m, "RESELI "); |
| 2581 | if (s & ENAUTOATNO) |
| 2582 | seq_puts(m, "AUTOATNO "); |
| 2583 | if (s & ENAUTOATNI) |
| 2584 | seq_puts(m, "AUTOATNI "); |
| 2585 | if (s & ENAUTOATNP) |
| 2586 | seq_puts(m, "AUTOATNP "); |
| 2587 | if (s & SCSIRSTO) |
| 2588 | seq_puts(m, "SCSIRSTO "); |
| 2589 | seq_puts(m, ");"); |
| 2590 | |
| 2591 | seq_puts(m, " SCSISIG("); |
| 2592 | s = GETPORT(SCSISIG); |
| 2593 | switch (s & P_MASK) { |
| 2594 | case P_DATAO: |
| 2595 | seq_puts(m, "DATA OUT"); |
| 2596 | break; |
| 2597 | case P_DATAI: |
| 2598 | seq_puts(m, "DATA IN"); |
| 2599 | break; |
| 2600 | case P_CMD: |
| 2601 | seq_puts(m, "COMMAND"); |
| 2602 | break; |
| 2603 | case P_STATUS: |
| 2604 | seq_puts(m, "STATUS"); |
| 2605 | break; |
| 2606 | case P_MSGO: |
| 2607 | seq_puts(m, "MESSAGE OUT"); |
| 2608 | break; |
| 2609 | case P_MSGI: |
| 2610 | seq_puts(m, "MESSAGE IN"); |
| 2611 | break; |
| 2612 | default: |
| 2613 | seq_puts(m, "*invalid*"); |
| 2614 | break; |
| 2615 | } |
| 2616 | |
| 2617 | seq_puts(m, "); "); |
| 2618 | |
| 2619 | seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); |
| 2620 | |
| 2621 | seq_puts(m, "SSTAT( "); |
| 2622 | s = GETPORT(SSTAT0); |
| 2623 | if (s & TARGET) |
| 2624 | seq_puts(m, "TARGET "); |
| 2625 | if (s & SELDO) |
| 2626 | seq_puts(m, "SELDO "); |
| 2627 | if (s & SELDI) |
| 2628 | seq_puts(m, "SELDI "); |
| 2629 | if (s & SELINGO) |
| 2630 | seq_puts(m, "SELINGO "); |
| 2631 | if (s & SWRAP) |
| 2632 | seq_puts(m, "SWRAP "); |
| 2633 | if (s & SDONE) |
| 2634 | seq_puts(m, "SDONE "); |
| 2635 | if (s & SPIORDY) |
| 2636 | seq_puts(m, "SPIORDY "); |
| 2637 | if (s & DMADONE) |
| 2638 | seq_puts(m, "DMADONE "); |
| 2639 | |
| 2640 | s = GETPORT(SSTAT1); |
| 2641 | if (s & SELTO) |
| 2642 | seq_puts(m, "SELTO "); |
| 2643 | if (s & ATNTARG) |
| 2644 | seq_puts(m, "ATNTARG "); |
| 2645 | if (s & SCSIRSTI) |
| 2646 | seq_puts(m, "SCSIRSTI "); |
| 2647 | if (s & PHASEMIS) |
| 2648 | seq_puts(m, "PHASEMIS "); |
| 2649 | if (s & BUSFREE) |
| 2650 | seq_puts(m, "BUSFREE "); |
| 2651 | if (s & SCSIPERR) |
| 2652 | seq_puts(m, "SCSIPERR "); |
| 2653 | if (s & PHASECHG) |
| 2654 | seq_puts(m, "PHASECHG "); |
| 2655 | if (s & REQINIT) |
| 2656 | seq_puts(m, "REQINIT "); |
| 2657 | seq_puts(m, "); "); |
| 2658 | |
| 2659 | |
| 2660 | seq_puts(m, "SSTAT( "); |
| 2661 | |
| 2662 | s = GETPORT(SSTAT0) & GETPORT(SIMODE0); |
| 2663 | |
| 2664 | if (s & TARGET) |
| 2665 | seq_puts(m, "TARGET "); |
| 2666 | if (s & SELDO) |
| 2667 | seq_puts(m, "SELDO "); |
| 2668 | if (s & SELDI) |
| 2669 | seq_puts(m, "SELDI "); |
| 2670 | if (s & SELINGO) |
| 2671 | seq_puts(m, "SELINGO "); |
| 2672 | if (s & SWRAP) |
| 2673 | seq_puts(m, "SWRAP "); |
| 2674 | if (s & SDONE) |
| 2675 | seq_puts(m, "SDONE "); |
| 2676 | if (s & SPIORDY) |
| 2677 | seq_puts(m, "SPIORDY "); |
| 2678 | if (s & DMADONE) |
| 2679 | seq_puts(m, "DMADONE "); |
| 2680 | |
| 2681 | s = GETPORT(SSTAT1) & GETPORT(SIMODE1); |
| 2682 | |
| 2683 | if (s & SELTO) |
| 2684 | seq_puts(m, "SELTO "); |
| 2685 | if (s & ATNTARG) |
| 2686 | seq_puts(m, "ATNTARG "); |
| 2687 | if (s & SCSIRSTI) |
| 2688 | seq_puts(m, "SCSIRSTI "); |
| 2689 | if (s & PHASEMIS) |
| 2690 | seq_puts(m, "PHASEMIS "); |
| 2691 | if (s & BUSFREE) |
| 2692 | seq_puts(m, "BUSFREE "); |
| 2693 | if (s & SCSIPERR) |
| 2694 | seq_puts(m, "SCSIPERR "); |
| 2695 | if (s & PHASECHG) |
| 2696 | seq_puts(m, "PHASECHG "); |
| 2697 | if (s & REQINIT) |
| 2698 | seq_puts(m, "REQINIT "); |
| 2699 | seq_puts(m, "); "); |
| 2700 | |
| 2701 | seq_puts(m, "SXFRCTL0( "); |
| 2702 | |
| 2703 | s = GETPORT(SXFRCTL0); |
| 2704 | if (s & SCSIEN) |
| 2705 | seq_puts(m, "SCSIEN "); |
| 2706 | if (s & DMAEN) |
| 2707 | seq_puts(m, "DMAEN "); |
| 2708 | if (s & CH1) |
| 2709 | seq_puts(m, "CH1 "); |
| 2710 | if (s & CLRSTCNT) |
| 2711 | seq_puts(m, "CLRSTCNT "); |
| 2712 | if (s & SPIOEN) |
| 2713 | seq_puts(m, "SPIOEN "); |
| 2714 | if (s & CLRCH1) |
| 2715 | seq_puts(m, "CLRCH1 "); |
| 2716 | seq_puts(m, "); "); |
| 2717 | |
| 2718 | seq_puts(m, "SIGNAL( "); |
| 2719 | |
| 2720 | s = GETPORT(SCSISIG); |
| 2721 | if (s & SIG_ATNI) |
| 2722 | seq_puts(m, "ATNI "); |
| 2723 | if (s & SIG_SELI) |
| 2724 | seq_puts(m, "SELI "); |
| 2725 | if (s & SIG_BSYI) |
| 2726 | seq_puts(m, "BSYI "); |
| 2727 | if (s & SIG_REQI) |
| 2728 | seq_puts(m, "REQI "); |
| 2729 | if (s & SIG_ACKI) |
| 2730 | seq_puts(m, "ACKI "); |
| 2731 | seq_puts(m, "); "); |
| 2732 | |
| 2733 | seq_printf(m, "SELID(%02x), ", GETPORT(SELID)); |
| 2734 | |
| 2735 | seq_printf(m, "STCNT(%d), ", GETSTCNT()); |
| 2736 | |
| 2737 | seq_puts(m, "SSTAT2( "); |
| 2738 | |
| 2739 | s = GETPORT(SSTAT2); |
| 2740 | if (s & SOFFSET) |
| 2741 | seq_puts(m, "SOFFSET "); |
| 2742 | if (s & SEMPTY) |
| 2743 | seq_puts(m, "SEMPTY "); |
| 2744 | if (s & SFULL) |
| 2745 | seq_puts(m, "SFULL "); |
| 2746 | seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT)); |
| 2747 | |
| 2748 | s = GETPORT(SSTAT3); |
| 2749 | seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); |
| 2750 | |
| 2751 | seq_puts(m, "SSTAT4( "); |
| 2752 | s = GETPORT(SSTAT4); |
| 2753 | if (s & SYNCERR) |
| 2754 | seq_puts(m, "SYNCERR "); |
| 2755 | if (s & FWERR) |
| 2756 | seq_puts(m, "FWERR "); |
| 2757 | if (s & FRERR) |
| 2758 | seq_puts(m, "FRERR "); |
| 2759 | seq_puts(m, "); "); |
| 2760 | |
| 2761 | seq_puts(m, "DMACNTRL0( "); |
| 2762 | s = GETPORT(DMACNTRL0); |
| 2763 | seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT"); |
| 2764 | seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO"); |
| 2765 | seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ"); |
| 2766 | if (s & ENDMA) |
| 2767 | seq_puts(m, "ENDMA "); |
| 2768 | if (s & INTEN) |
| 2769 | seq_puts(m, "INTEN "); |
| 2770 | if (s & RSTFIFO) |
| 2771 | seq_puts(m, "RSTFIFO "); |
| 2772 | if (s & SWINT) |
| 2773 | seq_puts(m, "SWINT "); |
| 2774 | seq_puts(m, "); "); |
| 2775 | |
| 2776 | seq_puts(m, "DMASTAT( "); |
| 2777 | s = GETPORT(DMASTAT); |
| 2778 | if (s & ATDONE) |
| 2779 | seq_puts(m, "ATDONE "); |
| 2780 | if (s & WORDRDY) |
| 2781 | seq_puts(m, "WORDRDY "); |
| 2782 | if (s & DFIFOFULL) |
| 2783 | seq_puts(m, "DFIFOFULL "); |
| 2784 | if (s & DFIFOEMP) |
| 2785 | seq_puts(m, "DFIFOEMP "); |
| 2786 | seq_puts(m, ")\n"); |
| 2787 | |
| 2788 | seq_puts(m, "enabled interrupts( "); |
| 2789 | |
| 2790 | s = GETPORT(SIMODE0); |
| 2791 | if (s & ENSELDO) |
| 2792 | seq_puts(m, "ENSELDO "); |
| 2793 | if (s & ENSELDI) |
| 2794 | seq_puts(m, "ENSELDI "); |
| 2795 | if (s & ENSELINGO) |
| 2796 | seq_puts(m, "ENSELINGO "); |
| 2797 | if (s & ENSWRAP) |
| 2798 | seq_puts(m, "ENSWRAP "); |
| 2799 | if (s & ENSDONE) |
| 2800 | seq_puts(m, "ENSDONE "); |
| 2801 | if (s & ENSPIORDY) |
| 2802 | seq_puts(m, "ENSPIORDY "); |
| 2803 | if (s & ENDMADONE) |
| 2804 | seq_puts(m, "ENDMADONE "); |
| 2805 | |
| 2806 | s = GETPORT(SIMODE1); |
| 2807 | if (s & ENSELTIMO) |
| 2808 | seq_puts(m, "ENSELTIMO "); |
| 2809 | if (s & ENATNTARG) |
| 2810 | seq_puts(m, "ENATNTARG "); |
| 2811 | if (s & ENPHASEMIS) |
| 2812 | seq_puts(m, "ENPHASEMIS "); |
| 2813 | if (s & ENBUSFREE) |
| 2814 | seq_puts(m, "ENBUSFREE "); |
| 2815 | if (s & ENSCSIPERR) |
| 2816 | seq_puts(m, "ENSCSIPERR "); |
| 2817 | if (s & ENPHASECHG) |
| 2818 | seq_puts(m, "ENPHASECHG "); |
| 2819 | if (s & ENREQINIT) |
| 2820 | seq_puts(m, "ENREQINIT "); |
| 2821 | seq_puts(m, ")\n"); |
| 2822 | } |
| 2823 | |
| 2824 | static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length) |
| 2825 | { |
| 2826 | if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0) |
| 2827 | return -EINVAL; |
| 2828 | |
| 2829 | #if defined(AHA152X_STAT) |
| 2830 | if(length>13 && strncmp("reset", buffer+8, 5)==0) { |
| 2831 | int i; |
| 2832 | |
| 2833 | HOSTDATA(shpnt)->total_commands=0; |
| 2834 | HOSTDATA(shpnt)->disconnections=0; |
| 2835 | HOSTDATA(shpnt)->busfree_without_any_action=0; |
| 2836 | HOSTDATA(shpnt)->busfree_without_old_command=0; |
| 2837 | HOSTDATA(shpnt)->busfree_without_new_command=0; |
| 2838 | HOSTDATA(shpnt)->busfree_without_done_command=0; |
| 2839 | HOSTDATA(shpnt)->busfree_with_check_condition=0; |
| 2840 | for (i = idle; i<maxstate; i++) { |
| 2841 | HOSTDATA(shpnt)->count[i]=0; |
| 2842 | HOSTDATA(shpnt)->count_trans[i]=0; |
| 2843 | HOSTDATA(shpnt)->time[i]=0; |
| 2844 | } |
| 2845 | |
| 2846 | shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n"); |
| 2847 | |
| 2848 | } else |
| 2849 | #endif |
| 2850 | { |
| 2851 | return -EINVAL; |
| 2852 | } |
| 2853 | |
| 2854 | |
| 2855 | return length; |
| 2856 | } |
| 2857 | |
| 2858 | static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt) |
| 2859 | { |
| 2860 | int i; |
| 2861 | struct scsi_cmnd *ptr; |
| 2862 | unsigned long flags; |
| 2863 | |
| 2864 | seq_puts(m, AHA152X_REVID "\n"); |
| 2865 | |
| 2866 | seq_printf(m, "ioports 0x%04lx to 0x%04lx\n", |
| 2867 | shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1); |
| 2868 | seq_printf(m, "interrupt 0x%02x\n", shpnt->irq); |
| 2869 | seq_printf(m, "disconnection/reconnection %s\n", |
| 2870 | RECONNECT ? "enabled" : "disabled"); |
| 2871 | seq_printf(m, "parity checking %s\n", |
| 2872 | PARITY ? "enabled" : "disabled"); |
| 2873 | seq_printf(m, "synchronous transfers %s\n", |
| 2874 | SYNCHRONOUS ? "enabled" : "disabled"); |
| 2875 | seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands); |
| 2876 | |
| 2877 | if(SYNCHRONOUS) { |
| 2878 | seq_puts(m, "synchronously operating targets (tick=50 ns):\n"); |
| 2879 | for (i = 0; i < 8; i++) |
| 2880 | if (HOSTDATA(shpnt)->syncrate[i] & 0x7f) |
| 2881 | seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n", |
| 2882 | i, |
| 2883 | (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2), |
| 2884 | (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50, |
| 2885 | HOSTDATA(shpnt)->syncrate[i] & 0x0f); |
| 2886 | } |
| 2887 | seq_puts(m, "\nqueue status:\n"); |
| 2888 | DO_LOCK(flags); |
| 2889 | if (ISSUE_SC) { |
| 2890 | seq_puts(m, "not yet issued commands:\n"); |
| 2891 | for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) |
| 2892 | get_command(m, ptr); |
| 2893 | } else |
| 2894 | seq_puts(m, "no not yet issued commands\n"); |
| 2895 | DO_UNLOCK(flags); |
| 2896 | |
| 2897 | if (CURRENT_SC) { |
| 2898 | seq_puts(m, "current command:\n"); |
| 2899 | get_command(m, CURRENT_SC); |
| 2900 | } else |
| 2901 | seq_puts(m, "no current command\n"); |
| 2902 | |
| 2903 | if (DISCONNECTED_SC) { |
| 2904 | seq_puts(m, "disconnected commands:\n"); |
| 2905 | for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr)) |
| 2906 | get_command(m, ptr); |
| 2907 | } else |
| 2908 | seq_puts(m, "no disconnected commands\n"); |
| 2909 | |
| 2910 | get_ports(m, shpnt); |
| 2911 | |
| 2912 | #if defined(AHA152X_STAT) |
| 2913 | seq_printf(m, "statistics:\n" |
| 2914 | "total commands: %d\n" |
| 2915 | "disconnections: %d\n" |
| 2916 | "busfree with check condition: %d\n" |
| 2917 | "busfree without old command: %d\n" |
| 2918 | "busfree without new command: %d\n" |
| 2919 | "busfree without done command: %d\n" |
| 2920 | "busfree without any action: %d\n" |
| 2921 | "state " |
| 2922 | "transitions " |
| 2923 | "count " |
| 2924 | "time\n", |
| 2925 | HOSTDATA(shpnt)->total_commands, |
| 2926 | HOSTDATA(shpnt)->disconnections, |
| 2927 | HOSTDATA(shpnt)->busfree_with_check_condition, |
| 2928 | HOSTDATA(shpnt)->busfree_without_old_command, |
| 2929 | HOSTDATA(shpnt)->busfree_without_new_command, |
| 2930 | HOSTDATA(shpnt)->busfree_without_done_command, |
| 2931 | HOSTDATA(shpnt)->busfree_without_any_action); |
| 2932 | for(i=0; i<maxstate; i++) { |
| 2933 | seq_printf(m, "%-10s %-12d %-12d %-12ld\n", |
| 2934 | states[i].name, |
| 2935 | HOSTDATA(shpnt)->count_trans[i], |
| 2936 | HOSTDATA(shpnt)->count[i], |
| 2937 | HOSTDATA(shpnt)->time[i]); |
| 2938 | } |
| 2939 | #endif |
| 2940 | return 0; |
| 2941 | } |
| 2942 | |
| 2943 | static int aha152x_adjust_queue(struct scsi_device *device) |
| 2944 | { |
| 2945 | blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH); |
| 2946 | return 0; |
| 2947 | } |
| 2948 | |
| 2949 | static const struct scsi_host_template aha152x_driver_template = { |
| 2950 | .module = THIS_MODULE, |
| 2951 | .name = AHA152X_REVID, |
| 2952 | .proc_name = "aha152x", |
| 2953 | .show_info = aha152x_show_info, |
| 2954 | .write_info = aha152x_set_info, |
| 2955 | .queuecommand = aha152x_queue, |
| 2956 | .eh_abort_handler = aha152x_abort, |
| 2957 | .eh_device_reset_handler = aha152x_device_reset, |
| 2958 | .eh_bus_reset_handler = aha152x_bus_reset, |
| 2959 | .bios_param = aha152x_biosparam, |
| 2960 | .can_queue = 1, |
| 2961 | .this_id = 7, |
| 2962 | .sg_tablesize = SG_ALL, |
| 2963 | .dma_boundary = PAGE_SIZE - 1, |
| 2964 | .slave_alloc = aha152x_adjust_queue, |
| 2965 | .cmd_size = sizeof(struct aha152x_cmd_priv), |
| 2966 | }; |
| 2967 | |
| 2968 | #if !defined(AHA152X_PCMCIA) |
| 2969 | static int setup_count; |
| 2970 | static struct aha152x_setup setup[2]; |
| 2971 | |
| 2972 | /* possible i/o addresses for the AIC-6260; default first */ |
| 2973 | static unsigned short ports[] = { 0x340, 0x140 }; |
| 2974 | |
| 2975 | #if !defined(SKIP_BIOSTEST) |
| 2976 | /* possible locations for the Adaptec BIOS; defaults first */ |
| 2977 | static unsigned int addresses[] = |
| 2978 | { |
| 2979 | 0xdc000, /* default first */ |
| 2980 | 0xc8000, |
| 2981 | 0xcc000, |
| 2982 | 0xd0000, |
| 2983 | 0xd4000, |
| 2984 | 0xd8000, |
| 2985 | 0xe0000, |
| 2986 | 0xeb800, /* VTech Platinum SMP */ |
| 2987 | 0xf0000, |
| 2988 | }; |
| 2989 | |
| 2990 | /* signatures for various AIC-6[23]60 based controllers. |
| 2991 | The point in detecting signatures is to avoid useless and maybe |
| 2992 | harmful probes on ports. I'm not sure that all listed boards pass |
| 2993 | auto-configuration. For those which fail the BIOS signature is |
| 2994 | obsolete, because user intervention to supply the configuration is |
| 2995 | needed anyway. May be an information whether or not the BIOS supports |
| 2996 | extended translation could be also useful here. */ |
| 2997 | static struct signature { |
| 2998 | unsigned char *signature; |
| 2999 | int sig_offset; |
| 3000 | int sig_length; |
| 3001 | } signatures[] = |
| 3002 | { |
| 3003 | { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, |
| 3004 | /* Adaptec 152x */ |
| 3005 | { "Adaptec AHA-1520B", 0x000b, 17 }, |
| 3006 | /* Adaptec 152x rev B */ |
| 3007 | { "Adaptec AHA-1520B", 0x0026, 17 }, |
| 3008 | /* Iomega Jaz Jet ISA (AIC6370Q) */ |
| 3009 | { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, |
| 3010 | /* on-board controller */ |
| 3011 | { "Adaptec BIOS: ASW-B626", 0x000f, 22 }, |
| 3012 | /* on-board controller */ |
| 3013 | { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, |
| 3014 | /* on-board controller */ |
| 3015 | { "Adaptec BIOS:AIC-6360", 0x000c, 21 }, |
| 3016 | /* on-board controller */ |
| 3017 | { "ScsiPro SP-360 BIOS", 0x2873, 19 }, |
| 3018 | /* ScsiPro-Controller */ |
| 3019 | { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, |
| 3020 | /* Gigabyte Local-Bus-SCSI */ |
| 3021 | { "Adaptec BIOS:AVA-282X", 0x000c, 21 }, |
| 3022 | /* Adaptec 282x */ |
| 3023 | { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, |
| 3024 | /* IBM Thinkpad Dock II */ |
| 3025 | { "Adaptec BIOS:AHA-1532P", 0x001c, 22 }, |
| 3026 | /* IBM Thinkpad Dock II SCSI */ |
| 3027 | { "DTC3520A Host Adapter BIOS", 0x318a, 26 }, |
| 3028 | /* DTC 3520A ISA SCSI */ |
| 3029 | }; |
| 3030 | #endif /* !SKIP_BIOSTEST */ |
| 3031 | |
| 3032 | /* |
| 3033 | * Test, if port_base is valid. |
| 3034 | * |
| 3035 | */ |
| 3036 | static int aha152x_porttest(int io_port) |
| 3037 | { |
| 3038 | int i; |
| 3039 | |
| 3040 | SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ |
| 3041 | for (i = 0; i < 16; i++) |
| 3042 | SETPORT(io_port + O_STACK, i); |
| 3043 | |
| 3044 | SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ |
| 3045 | for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++) |
| 3046 | ; |
| 3047 | |
| 3048 | return (i == 16); |
| 3049 | } |
| 3050 | |
| 3051 | static int tc1550_porttest(int io_port) |
| 3052 | { |
| 3053 | int i; |
| 3054 | |
| 3055 | SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ |
| 3056 | for (i = 0; i < 16; i++) |
| 3057 | SETPORT(io_port + O_STACK, i); |
| 3058 | |
| 3059 | SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ |
| 3060 | for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++) |
| 3061 | ; |
| 3062 | |
| 3063 | return (i == 16); |
| 3064 | } |
| 3065 | |
| 3066 | |
| 3067 | static int checksetup(struct aha152x_setup *setup) |
| 3068 | { |
| 3069 | int i; |
| 3070 | for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++) |
| 3071 | ; |
| 3072 | |
| 3073 | if (i == ARRAY_SIZE(ports)) |
| 3074 | return 0; |
| 3075 | |
| 3076 | if (!request_region(setup->io_port, IO_RANGE, "aha152x")) { |
| 3077 | printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port); |
| 3078 | return 0; |
| 3079 | } |
| 3080 | |
| 3081 | if( aha152x_porttest(setup->io_port) ) { |
| 3082 | setup->tc1550=0; |
| 3083 | } else if( tc1550_porttest(setup->io_port) ) { |
| 3084 | setup->tc1550=1; |
| 3085 | } else { |
| 3086 | release_region(setup->io_port, IO_RANGE); |
| 3087 | return 0; |
| 3088 | } |
| 3089 | |
| 3090 | release_region(setup->io_port, IO_RANGE); |
| 3091 | |
| 3092 | if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX)) |
| 3093 | return 0; |
| 3094 | |
| 3095 | if ((setup->scsiid < 0) || (setup->scsiid > 7)) |
| 3096 | return 0; |
| 3097 | |
| 3098 | if ((setup->reconnect < 0) || (setup->reconnect > 1)) |
| 3099 | return 0; |
| 3100 | |
| 3101 | if ((setup->parity < 0) || (setup->parity > 1)) |
| 3102 | return 0; |
| 3103 | |
| 3104 | if ((setup->synchronous < 0) || (setup->synchronous > 1)) |
| 3105 | return 0; |
| 3106 | |
| 3107 | if ((setup->ext_trans < 0) || (setup->ext_trans > 1)) |
| 3108 | return 0; |
| 3109 | |
| 3110 | |
| 3111 | return 1; |
| 3112 | } |
| 3113 | |
| 3114 | |
| 3115 | static int __init aha152x_init(void) |
| 3116 | { |
| 3117 | int i, j, ok; |
| 3118 | #if defined(AUTOCONF) |
| 3119 | aha152x_config conf; |
| 3120 | #endif |
| 3121 | #ifdef __ISAPNP__ |
| 3122 | struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL}; |
| 3123 | #endif |
| 3124 | |
| 3125 | if ( setup_count ) { |
| 3126 | printk(KERN_INFO "aha152x: processing commandline: "); |
| 3127 | |
| 3128 | for (i = 0; i<setup_count; i++) { |
| 3129 | if (!checksetup(&setup[i])) { |
| 3130 | printk(KERN_ERR "\naha152x: %s\n", setup[i].conf); |
| 3131 | printk(KERN_ERR "aha152x: invalid line\n"); |
| 3132 | } |
| 3133 | } |
| 3134 | printk("ok\n"); |
| 3135 | } |
| 3136 | |
| 3137 | #if defined(SETUP0) |
| 3138 | if (setup_count < ARRAY_SIZE(setup)) { |
| 3139 | struct aha152x_setup override = SETUP0; |
| 3140 | |
| 3141 | if (setup_count == 0 || (override.io_port != setup[0].io_port)) { |
| 3142 | if (!checksetup(&override)) { |
| 3143 | printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", |
| 3144 | override.io_port, |
| 3145 | override.irq, |
| 3146 | override.scsiid, |
| 3147 | override.reconnect, |
| 3148 | override.parity, |
| 3149 | override.synchronous, |
| 3150 | override.delay, |
| 3151 | override.ext_trans); |
| 3152 | } else |
| 3153 | setup[setup_count++] = override; |
| 3154 | } |
| 3155 | } |
| 3156 | #endif |
| 3157 | |
| 3158 | #if defined(SETUP1) |
| 3159 | if (setup_count < ARRAY_SIZE(setup)) { |
| 3160 | struct aha152x_setup override = SETUP1; |
| 3161 | |
| 3162 | if (setup_count == 0 || (override.io_port != setup[0].io_port)) { |
| 3163 | if (!checksetup(&override)) { |
| 3164 | printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", |
| 3165 | override.io_port, |
| 3166 | override.irq, |
| 3167 | override.scsiid, |
| 3168 | override.reconnect, |
| 3169 | override.parity, |
| 3170 | override.synchronous, |
| 3171 | override.delay, |
| 3172 | override.ext_trans); |
| 3173 | } else |
| 3174 | setup[setup_count++] = override; |
| 3175 | } |
| 3176 | } |
| 3177 | #endif |
| 3178 | |
| 3179 | #if defined(MODULE) |
| 3180 | if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) { |
| 3181 | if(aha152x[0]!=0) { |
| 3182 | setup[setup_count].conf = ""; |
| 3183 | setup[setup_count].io_port = aha152x[0]; |
| 3184 | setup[setup_count].irq = aha152x[1]; |
| 3185 | setup[setup_count].scsiid = aha152x[2]; |
| 3186 | setup[setup_count].reconnect = aha152x[3]; |
| 3187 | setup[setup_count].parity = aha152x[4]; |
| 3188 | setup[setup_count].synchronous = aha152x[5]; |
| 3189 | setup[setup_count].delay = aha152x[6]; |
| 3190 | setup[setup_count].ext_trans = aha152x[7]; |
| 3191 | } else if (io[0] != 0 || irq[0] != 0) { |
| 3192 | if(io[0]!=0) setup[setup_count].io_port = io[0]; |
| 3193 | if(irq[0]!=0) setup[setup_count].irq = irq[0]; |
| 3194 | |
| 3195 | setup[setup_count].scsiid = scsiid[0]; |
| 3196 | setup[setup_count].reconnect = reconnect[0]; |
| 3197 | setup[setup_count].parity = parity[0]; |
| 3198 | setup[setup_count].synchronous = sync[0]; |
| 3199 | setup[setup_count].delay = delay[0]; |
| 3200 | setup[setup_count].ext_trans = exttrans[0]; |
| 3201 | } |
| 3202 | |
| 3203 | if (checksetup(&setup[setup_count])) |
| 3204 | setup_count++; |
| 3205 | else |
| 3206 | printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", |
| 3207 | setup[setup_count].io_port, |
| 3208 | setup[setup_count].irq, |
| 3209 | setup[setup_count].scsiid, |
| 3210 | setup[setup_count].reconnect, |
| 3211 | setup[setup_count].parity, |
| 3212 | setup[setup_count].synchronous, |
| 3213 | setup[setup_count].delay, |
| 3214 | setup[setup_count].ext_trans); |
| 3215 | } |
| 3216 | |
| 3217 | if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) { |
| 3218 | if(aha152x1[0]!=0) { |
| 3219 | setup[setup_count].conf = ""; |
| 3220 | setup[setup_count].io_port = aha152x1[0]; |
| 3221 | setup[setup_count].irq = aha152x1[1]; |
| 3222 | setup[setup_count].scsiid = aha152x1[2]; |
| 3223 | setup[setup_count].reconnect = aha152x1[3]; |
| 3224 | setup[setup_count].parity = aha152x1[4]; |
| 3225 | setup[setup_count].synchronous = aha152x1[5]; |
| 3226 | setup[setup_count].delay = aha152x1[6]; |
| 3227 | setup[setup_count].ext_trans = aha152x1[7]; |
| 3228 | } else if (io[1] != 0 || irq[1] != 0) { |
| 3229 | if(io[1]!=0) setup[setup_count].io_port = io[1]; |
| 3230 | if(irq[1]!=0) setup[setup_count].irq = irq[1]; |
| 3231 | |
| 3232 | setup[setup_count].scsiid = scsiid[1]; |
| 3233 | setup[setup_count].reconnect = reconnect[1]; |
| 3234 | setup[setup_count].parity = parity[1]; |
| 3235 | setup[setup_count].synchronous = sync[1]; |
| 3236 | setup[setup_count].delay = delay[1]; |
| 3237 | setup[setup_count].ext_trans = exttrans[1]; |
| 3238 | } |
| 3239 | if (checksetup(&setup[setup_count])) |
| 3240 | setup_count++; |
| 3241 | else |
| 3242 | printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", |
| 3243 | setup[setup_count].io_port, |
| 3244 | setup[setup_count].irq, |
| 3245 | setup[setup_count].scsiid, |
| 3246 | setup[setup_count].reconnect, |
| 3247 | setup[setup_count].parity, |
| 3248 | setup[setup_count].synchronous, |
| 3249 | setup[setup_count].delay, |
| 3250 | setup[setup_count].ext_trans); |
| 3251 | } |
| 3252 | #endif |
| 3253 | |
| 3254 | #ifdef __ISAPNP__ |
| 3255 | for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) { |
| 3256 | while ( setup_count<ARRAY_SIZE(setup) && |
| 3257 | (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) { |
| 3258 | if (pnp_device_attach(dev) < 0) |
| 3259 | continue; |
| 3260 | |
| 3261 | if (pnp_activate_dev(dev) < 0) { |
| 3262 | pnp_device_detach(dev); |
| 3263 | continue; |
| 3264 | } |
| 3265 | |
| 3266 | if (!pnp_port_valid(dev, 0)) { |
| 3267 | pnp_device_detach(dev); |
| 3268 | continue; |
| 3269 | } |
| 3270 | |
| 3271 | if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) { |
| 3272 | pnp_device_detach(dev); |
| 3273 | continue; |
| 3274 | } |
| 3275 | |
| 3276 | setup[setup_count].io_port = pnp_port_start(dev, 0); |
| 3277 | setup[setup_count].irq = pnp_irq(dev, 0); |
| 3278 | setup[setup_count].scsiid = 7; |
| 3279 | setup[setup_count].reconnect = 1; |
| 3280 | setup[setup_count].parity = 1; |
| 3281 | setup[setup_count].synchronous = 1; |
| 3282 | setup[setup_count].delay = DELAY_DEFAULT; |
| 3283 | setup[setup_count].ext_trans = 0; |
| 3284 | #if defined(__ISAPNP__) |
| 3285 | pnpdev[setup_count] = dev; |
| 3286 | #endif |
| 3287 | printk (KERN_INFO |
| 3288 | "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n", |
| 3289 | setup[setup_count].io_port, setup[setup_count].irq); |
| 3290 | setup_count++; |
| 3291 | } |
| 3292 | } |
| 3293 | #endif |
| 3294 | |
| 3295 | #if defined(AUTOCONF) |
| 3296 | if (setup_count<ARRAY_SIZE(setup)) { |
| 3297 | #if !defined(SKIP_BIOSTEST) |
| 3298 | ok = 0; |
| 3299 | for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) { |
| 3300 | void __iomem *p = ioremap(addresses[i], 0x4000); |
| 3301 | if (!p) |
| 3302 | continue; |
| 3303 | for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++) |
| 3304 | ok = check_signature(p + signatures[j].sig_offset, |
| 3305 | signatures[j].signature, signatures[j].sig_length); |
| 3306 | iounmap(p); |
| 3307 | } |
| 3308 | if (!ok && setup_count == 0) |
| 3309 | return -ENODEV; |
| 3310 | |
| 3311 | printk(KERN_INFO "aha152x: BIOS test: passed, "); |
| 3312 | #else |
| 3313 | printk(KERN_INFO "aha152x: "); |
| 3314 | #endif /* !SKIP_BIOSTEST */ |
| 3315 | |
| 3316 | ok = 0; |
| 3317 | for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) { |
| 3318 | if ((setup_count == 1) && (setup[0].io_port == ports[i])) |
| 3319 | continue; |
| 3320 | |
| 3321 | if (!request_region(ports[i], IO_RANGE, "aha152x")) { |
| 3322 | printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]); |
| 3323 | continue; |
| 3324 | } |
| 3325 | |
| 3326 | if (aha152x_porttest(ports[i])) { |
| 3327 | setup[setup_count].tc1550 = 0; |
| 3328 | |
| 3329 | conf.cf_port = |
| 3330 | (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB); |
| 3331 | } else if (tc1550_porttest(ports[i])) { |
| 3332 | setup[setup_count].tc1550 = 1; |
| 3333 | |
| 3334 | conf.cf_port = |
| 3335 | (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB); |
| 3336 | } else { |
| 3337 | release_region(ports[i], IO_RANGE); |
| 3338 | continue; |
| 3339 | } |
| 3340 | |
| 3341 | release_region(ports[i], IO_RANGE); |
| 3342 | |
| 3343 | ok++; |
| 3344 | setup[setup_count].io_port = ports[i]; |
| 3345 | setup[setup_count].irq = IRQ_MIN + conf.cf_irq; |
| 3346 | setup[setup_count].scsiid = conf.cf_id; |
| 3347 | setup[setup_count].reconnect = conf.cf_tardisc; |
| 3348 | setup[setup_count].parity = !conf.cf_parity; |
| 3349 | setup[setup_count].synchronous = conf.cf_syncneg; |
| 3350 | setup[setup_count].delay = DELAY_DEFAULT; |
| 3351 | setup[setup_count].ext_trans = 0; |
| 3352 | setup_count++; |
| 3353 | |
| 3354 | } |
| 3355 | |
| 3356 | if (ok) |
| 3357 | printk("auto configuration: ok, "); |
| 3358 | } |
| 3359 | #endif |
| 3360 | |
| 3361 | printk("%d controller(s) configured\n", setup_count); |
| 3362 | |
| 3363 | for (i=0; i<setup_count; i++) { |
| 3364 | if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) { |
| 3365 | struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]); |
| 3366 | |
| 3367 | if( !shpnt ) { |
| 3368 | release_region(setup[i].io_port, IO_RANGE); |
| 3369 | #if defined(__ISAPNP__) |
| 3370 | } else if( pnpdev[i] ) { |
| 3371 | HOSTDATA(shpnt)->pnpdev=pnpdev[i]; |
| 3372 | pnpdev[i]=NULL; |
| 3373 | #endif |
| 3374 | } |
| 3375 | } else { |
| 3376 | printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port); |
| 3377 | } |
| 3378 | |
| 3379 | #if defined(__ISAPNP__) |
| 3380 | if( pnpdev[i] ) |
| 3381 | pnp_device_detach(pnpdev[i]); |
| 3382 | #endif |
| 3383 | } |
| 3384 | |
| 3385 | return 0; |
| 3386 | } |
| 3387 | |
| 3388 | static void __exit aha152x_exit(void) |
| 3389 | { |
| 3390 | struct aha152x_hostdata *hd, *tmp; |
| 3391 | |
| 3392 | list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) { |
| 3393 | struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); |
| 3394 | |
| 3395 | aha152x_release(shost); |
| 3396 | } |
| 3397 | } |
| 3398 | |
| 3399 | module_init(aha152x_init); |
| 3400 | module_exit(aha152x_exit); |
| 3401 | |
| 3402 | #if !defined(MODULE) |
| 3403 | static int __init aha152x_setup(char *str) |
| 3404 | { |
| 3405 | int ints[10]; |
| 3406 | |
| 3407 | get_options(str, ARRAY_SIZE(ints), ints); |
| 3408 | |
| 3409 | if(setup_count>=ARRAY_SIZE(setup)) { |
| 3410 | printk(KERN_ERR "aha152x: you can only configure up to two controllers\n"); |
| 3411 | return 1; |
| 3412 | } |
| 3413 | |
| 3414 | setup[setup_count].conf = str; |
| 3415 | setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; |
| 3416 | setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; |
| 3417 | setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; |
| 3418 | setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; |
| 3419 | setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; |
| 3420 | setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1; |
| 3421 | setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; |
| 3422 | setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; |
| 3423 | if (ints[0] > 8) |
| 3424 | printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" |
| 3425 | "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); |
| 3426 | else |
| 3427 | setup_count++; |
| 3428 | |
| 3429 | return 1; |
| 3430 | } |
| 3431 | __setup("aha152x=", aha152x_setup); |
| 3432 | #endif |
| 3433 | |
| 3434 | #endif /* !AHA152X_PCMCIA */ |