Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * eata.c - Low-level driver for EATA/DMA SCSI host adapters. |
| 3 | * |
| 4 | * 03 Jun 2003 Rev. 8.10 for linux-2.5.70 |
| 5 | * + Update for new IRQ API. |
| 6 | * + Use "goto" when appropriate. |
| 7 | * + Drop eata.h. |
| 8 | * + Update for new module_param API. |
| 9 | * + Module parameters can now be specified only in the |
| 10 | * same format as the kernel boot options. |
| 11 | * |
| 12 | * boot option old module param |
| 13 | * ----------- ------------------ |
| 14 | * addr,... io_port=addr,... |
| 15 | * lc:[y|n] linked_comm=[1|0] |
| 16 | * mq:xx max_queue_depth=xx |
| 17 | * tm:[0|1|2] tag_mode=[0|1|2] |
| 18 | * et:[y|n] ext_tran=[1|0] |
| 19 | * rs:[y|n] rev_scan=[1|0] |
| 20 | * ip:[y|n] isa_probe=[1|0] |
| 21 | * ep:[y|n] eisa_probe=[1|0] |
| 22 | * pp:[y|n] pci_probe=[1|0] |
| 23 | * |
| 24 | * A valid example using the new parameter format is: |
| 25 | * modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n" |
| 26 | * |
| 27 | * which is equivalent to the old format: |
| 28 | * modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \ |
| 29 | * max_queue_depth=4 eisa_probe=0 |
| 30 | * |
| 31 | * 12 Feb 2003 Rev. 8.04 for linux 2.5.60 |
| 32 | * + Release irq before calling scsi_register. |
| 33 | * |
| 34 | * 12 Nov 2002 Rev. 8.02 for linux 2.5.47 |
| 35 | * + Release driver_lock before calling scsi_register. |
| 36 | * |
| 37 | * 11 Nov 2002 Rev. 8.01 for linux 2.5.47 |
| 38 | * + Fixed bios_param and scsicam_bios_param calling parameters. |
| 39 | * |
| 40 | * 28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4 |
| 41 | * + Use new tcq and adjust_queue_depth api. |
| 42 | * + New command line option (tm:[0-2]) to choose the type of tags: |
| 43 | * 0 -> disable tagging ; 1 -> simple tags ; 2 -> ordered tags. |
| 44 | * Default is tm:0 (tagged commands disabled). |
| 45 | * For compatibility the "tc:" option is an alias of the "tm:" |
| 46 | * option; tc:n is equivalent to tm:0 and tc:y is equivalent to |
| 47 | * tm:1. |
| 48 | * + The tagged_comm module parameter has been removed, use tag_mode |
| 49 | * instead, equivalent to the "tm:" boot option. |
| 50 | * |
| 51 | * 10 Oct 2002 Rev. 7.70 for linux 2.5.42 |
| 52 | * + Foreport from revision 6.70. |
| 53 | * |
| 54 | * 25 Jun 2002 Rev. 6.70 for linux 2.4.19 |
| 55 | * + This release is the first one tested on a Big Endian platform: |
| 56 | * fixed endian-ness problem due to bitfields; |
| 57 | * fixed endian-ness problem in read_pio. |
| 58 | * + Added new options for selectively probing ISA, EISA and PCI bus: |
| 59 | * |
| 60 | * Boot option Parameter name Default according to |
| 61 | * |
| 62 | * ip:[y|n] isa_probe=[1|0] CONFIG_ISA defined |
| 63 | * ep:[y|n] eisa_probe=[1|0] CONFIG_EISA defined |
| 64 | * pp:[y|n] pci_probe=[1|0] CONFIG_PCI defined |
| 65 | * |
| 66 | * The default action is to perform probing if the corrisponding |
| 67 | * bus is configured and to skip probing otherwise. |
| 68 | * |
| 69 | * + If pci_probe is in effect and a list of I/O ports is specified |
| 70 | * as parameter or boot option, pci_enable_device() is performed |
| 71 | * on all pci devices matching PCI_CLASS_STORAGE_SCSI. |
| 72 | * |
| 73 | * 21 Feb 2002 Rev. 6.52 for linux 2.4.18 |
| 74 | * + Backport from rev. 7.22 (use io_request_lock). |
| 75 | * |
| 76 | * 20 Feb 2002 Rev. 7.22 for linux 2.5.5 |
| 77 | * + Remove any reference to virt_to_bus(). |
| 78 | * + Fix pio hang while detecting multiple HBAs. |
| 79 | * + Fixed a board detection bug: in a system with |
| 80 | * multiple ISA/EISA boards, all but the first one |
| 81 | * were erroneously detected as PCI. |
| 82 | * |
| 83 | * 01 Jan 2002 Rev. 7.20 for linux 2.5.1 |
| 84 | * + Use the dynamic DMA mapping API. |
| 85 | * |
| 86 | * 19 Dec 2001 Rev. 7.02 for linux 2.5.1 |
| 87 | * + Use SCpnt->sc_data_direction if set. |
| 88 | * + Use sglist.page instead of sglist.address. |
| 89 | * |
| 90 | * 11 Dec 2001 Rev. 7.00 for linux 2.5.1 |
| 91 | * + Use host->host_lock instead of io_request_lock. |
| 92 | * |
| 93 | * 1 May 2001 Rev. 6.05 for linux 2.4.4 |
| 94 | * + Clean up all pci related routines. |
| 95 | * + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d) |
| 96 | * |
| 97 | * 30 Jan 2001 Rev. 6.04 for linux 2.4.1 |
| 98 | * + Call pci_resource_start after pci_enable_device. |
| 99 | * |
| 100 | * 25 Jan 2001 Rev. 6.03 for linux 2.4.0 |
| 101 | * + "check_region" call replaced by "request_region". |
| 102 | * |
| 103 | * 22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11 |
| 104 | * + Return code checked when calling pci_enable_device. |
| 105 | * + Removed old scsi error handling support. |
| 106 | * + The obsolete boot option flag eh:n is silently ignored. |
| 107 | * + Removed error messages while a disk drive is powered up at |
| 108 | * boot time. |
| 109 | * + Improved boot messages: all tagged capable device are |
| 110 | * indicated as "tagged" or "soft-tagged" : |
| 111 | * - "soft-tagged" means that the driver is trying to do its |
| 112 | * own tagging (i.e. the tc:y option is in effect); |
| 113 | * - "tagged" means that the device supports tagged commands, |
| 114 | * but the driver lets the HBA be responsible for tagging |
| 115 | * support. |
| 116 | * |
| 117 | * 16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18 |
| 118 | * + Updated to the new __setup interface for boot command line options. |
| 119 | * + When loaded as a module, accepts the new parameter boot_options |
| 120 | * which value is a string with the same format of the kernel boot |
| 121 | * command line options. A valid example is: |
| 122 | * modprobe eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"' |
| 123 | * |
| 124 | * 9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17 |
| 125 | * + 64bit cleanup for Linux/Alpha platform support |
| 126 | * (contribution from H.J. Lu). |
| 127 | * |
| 128 | * 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11 |
| 129 | * + Removed pre-2.2 source code compatibility. |
| 130 | * + Added call to pci_set_master. |
| 131 | * |
| 132 | * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111 |
| 133 | * + Added command line option (rs:[y|n]) to reverse the scan order |
| 134 | * of PCI boards. The default is rs:y, which reverses the BIOS order |
| 135 | * while registering PCI boards. The default value rs:y generates |
| 136 | * the same order of all previous revisions of this driver. |
| 137 | * Pls. note that "BIOS order" might have been reversed itself |
| 138 | * after the 2.1.9x PCI modifications in the linux kernel. |
| 139 | * The rs value is ignored when the explicit list of addresses |
| 140 | * is used by the "eata=port0,port1,..." command line option. |
| 141 | * + Added command line option (et:[y|n]) to force use of extended |
| 142 | * translation (255 heads, 63 sectors) as disk geometry. |
| 143 | * The default is et:n, which uses the disk geometry returned |
| 144 | * by scsicam_bios_param. The default value et:n is compatible with |
| 145 | * all previous revisions of this driver. |
| 146 | * |
| 147 | * 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104 |
| 148 | * Increased busy timeout from 10 msec. to 200 msec. while |
| 149 | * processing interrupts. |
| 150 | * |
| 151 | * 16 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102 |
| 152 | * Improved abort handling during the eh recovery process. |
| 153 | * |
| 154 | * 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101 |
| 155 | * The driver is now fully SMP safe, including the |
| 156 | * abort and reset routines. |
| 157 | * Added command line options (eh:[y|n]) to choose between |
| 158 | * new_eh_code and the old scsi code. |
| 159 | * If linux version >= 2.1.101 the default is eh:y, while the eh |
| 160 | * option is ignored for previous releases and the old scsi code |
| 161 | * is used. |
| 162 | * |
| 163 | * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97 |
| 164 | * Reworked interrupt handler. |
| 165 | * |
| 166 | * 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95 |
| 167 | * Major reliability improvement: when a batch with overlapping |
| 168 | * requests is detected, requests are queued one at a time |
| 169 | * eliminating any possible board or drive reordering. |
| 170 | * |
| 171 | * 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95 |
| 172 | * Improved SMP support (if linux version >= 2.1.95). |
| 173 | * |
| 174 | * 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94 |
| 175 | * Added support for new PCI code and IO-APIC remapping of irqs. |
| 176 | * Performance improvement: when sequential i/o is detected, |
| 177 | * always use direct sort instead of reverse sort. |
| 178 | * |
| 179 | * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92 |
| 180 | * io_port is now unsigned long. |
| 181 | * |
| 182 | * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88 |
| 183 | * Use new scsi error handling code (if linux version >= 2.1.88). |
| 184 | * Use new interrupt code. |
| 185 | * |
| 186 | * 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55 |
| 187 | * Use of udelay inside the wait loops to avoid timeout |
| 188 | * problems with fast cpus. |
| 189 | * Removed check about useless calls to the interrupt service |
| 190 | * routine (reported on SMP systems only). |
| 191 | * At initialization time "sorted/unsorted" is displayed instead |
| 192 | * of "linked/unlinked" to reinforce the fact that "linking" is |
| 193 | * nothing but "elevator sorting" in the actual implementation. |
| 194 | * |
| 195 | * 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38 |
| 196 | * Use of serial_number_at_timeout in abort and reset processing. |
| 197 | * Use of the __initfunc and __initdata macro in setup code. |
| 198 | * Minor cleanups in the list_statistics code. |
| 199 | * Increased controller busy timeout in order to better support |
| 200 | * slow SCSI devices. |
| 201 | * |
| 202 | * 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26 |
| 203 | * When loading as a module, parameter passing is now supported |
| 204 | * both in 2.0 and in 2.1 style. |
| 205 | * Fixed data transfer direction for some SCSI opcodes. |
| 206 | * Immediate acknowledge to request sense commands. |
| 207 | * Linked commands to each disk device are now reordered by elevator |
| 208 | * sorting. Rare cases in which reordering of write requests could |
| 209 | * cause wrong results are managed. |
| 210 | * Fixed spurious timeouts caused by long simple queue tag sequences. |
| 211 | * New command line option (tm:[0-3]) to choose the type of tags: |
| 212 | * 0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered. |
| 213 | * |
| 214 | * 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28 |
| 215 | * Added command line options to enable/disable linked commands |
| 216 | * (lc:[y|n]), tagged commands (tc:[y|n]) and to set the max queue |
| 217 | * depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16". |
| 218 | * Improved command linking. |
| 219 | * Documented how to setup RAID-0 with DPT SmartRAID boards. |
| 220 | * |
| 221 | * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27 |
| 222 | * Added linked command support. |
| 223 | * Improved detection of PCI boards using ISA base addresses. |
| 224 | * |
| 225 | * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27 |
| 226 | * Added support for tagged commands and queue depth adjustment. |
| 227 | * |
| 228 | * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26 |
| 229 | * When CONFIG_PCI is defined, BIOS32 is used to include in the |
| 230 | * list of i/o ports to be probed all the PCI SCSI controllers. |
| 231 | * The list of i/o ports to be probed can be overwritten by the |
| 232 | * "eata=port0,port1,...." boot command line option. |
| 233 | * Scatter/gather lists are now allocated by a number of kmalloc |
| 234 | * calls, in order to avoid the previous size limit of 64Kb. |
| 235 | * |
| 236 | * 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25 |
| 237 | * Added support for EATA 2.0C, PCI, multichannel and wide SCSI. |
| 238 | * |
| 239 | * 27 Sep 1996 rev. 2.12 for linux 2.1.0 |
| 240 | * Portability cleanups (virtual/bus addressing, little/big endian |
| 241 | * support). |
| 242 | * |
| 243 | * 09 Jul 1996 rev. 2.11 for linux 2.0.4 |
| 244 | * Number of internal retries is now limited. |
| 245 | * |
| 246 | * 16 Apr 1996 rev. 2.10 for linux 1.3.90 |
| 247 | * New argument "reset_flags" to the reset routine. |
| 248 | * |
| 249 | * 6 Jul 1995 rev. 2.01 for linux 1.3.7 |
| 250 | * Update required by the new /proc/scsi support. |
| 251 | * |
| 252 | * 11 Mar 1995 rev. 2.00 for linux 1.2.0 |
| 253 | * Fixed a bug which prevented media change detection for removable |
| 254 | * disk drives. |
| 255 | * |
| 256 | * 23 Feb 1995 rev. 1.18 for linux 1.1.94 |
| 257 | * Added a check for scsi_register returning NULL. |
| 258 | * |
| 259 | * 11 Feb 1995 rev. 1.17 for linux 1.1.91 |
| 260 | * Now DEBUG_RESET is disabled by default. |
| 261 | * Register a board even if it does not assert DMA protocol support |
| 262 | * (DPT SK2011B does not report correctly the dmasup bit). |
| 263 | * |
| 264 | * 9 Feb 1995 rev. 1.16 for linux 1.1.90 |
| 265 | * Use host->wish_block instead of host->block. |
| 266 | * New list of Data Out SCSI commands. |
| 267 | * |
| 268 | * 8 Feb 1995 rev. 1.15 for linux 1.1.89 |
| 269 | * Cleared target_time_out counter while performing a reset. |
| 270 | * All external symbols renamed to avoid possible name conflicts. |
| 271 | * |
| 272 | * 28 Jan 1995 rev. 1.14 for linux 1.1.86 |
| 273 | * Added module support. |
| 274 | * Log and do a retry when a disk drive returns a target status |
| 275 | * different from zero on a recovered error. |
| 276 | * |
| 277 | * 24 Jan 1995 rev. 1.13 for linux 1.1.85 |
| 278 | * Use optimized board configuration, with a measured performance |
| 279 | * increase in the range 10%-20% on i/o throughput. |
| 280 | * |
| 281 | * 16 Jan 1995 rev. 1.12 for linux 1.1.81 |
| 282 | * Fix mscp structure comments (no functional change). |
| 283 | * Display a message if check_region detects a port address |
| 284 | * already in use. |
| 285 | * |
| 286 | * 17 Dec 1994 rev. 1.11 for linux 1.1.74 |
| 287 | * Use the scsicam_bios_param routine. This allows an easy |
| 288 | * migration path from disk partition tables created using |
| 289 | * different SCSI drivers and non optimal disk geometry. |
| 290 | * |
| 291 | * 15 Dec 1994 rev. 1.10 for linux 1.1.74 |
| 292 | * Added support for ISA EATA boards (DPT PM2011, DPT PM2021). |
| 293 | * The host->block flag is set for all the detected ISA boards. |
| 294 | * The detect routine no longer enforces LEVEL triggering |
| 295 | * for EISA boards, it just prints a warning message. |
| 296 | * |
| 297 | * 30 Nov 1994 rev. 1.09 for linux 1.1.68 |
| 298 | * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only. |
| 299 | * Added optional support for using a single board at a time. |
| 300 | * |
| 301 | * 18 Nov 1994 rev. 1.08 for linux 1.1.64 |
| 302 | * Forces sg_tablesize = 64 and can_queue = 64 if these |
| 303 | * values are not correctly detected (DPT PM2012). |
| 304 | * |
| 305 | * 14 Nov 1994 rev. 1.07 for linux 1.1.63 Final BETA release. |
| 306 | * 04 Aug 1994 rev. 1.00 for linux 1.1.39 First BETA release. |
| 307 | * |
| 308 | * |
| 309 | * This driver is based on the CAM (Common Access Method Committee) |
| 310 | * EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol. |
| 311 | * |
| 312 | * Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com) |
| 313 | * |
| 314 | * Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it |
| 315 | * |
| 316 | * Redistribution and use in source and binary forms, with or without |
| 317 | * modification, are permitted provided that redistributions of source |
| 318 | * code retain the above copyright notice and this comment without |
| 319 | * modification. |
| 320 | * |
| 321 | */ |
| 322 | |
| 323 | /* |
| 324 | * |
| 325 | * Here is a brief description of the DPT SCSI host adapters. |
| 326 | * All these boards provide an EATA/DMA compatible programming interface |
| 327 | * and are fully supported by this driver in any configuration, including |
| 328 | * multiple SCSI channels: |
| 329 | * |
| 330 | * PM2011B/9X - Entry Level ISA |
| 331 | * PM2021A/9X - High Performance ISA |
| 332 | * PM2012A Old EISA |
| 333 | * PM2012B Old EISA |
| 334 | * PM2022A/9X - Entry Level EISA |
| 335 | * PM2122A/9X - High Performance EISA |
| 336 | * PM2322A/9X - Extra High Performance EISA |
| 337 | * PM3021 - SmartRAID Adapter for ISA |
| 338 | * PM3222 - SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI) |
| 339 | * PM3224 - SmartRAID Adapter for PCI (PM3224W is 16-bit wide SCSI) |
| 340 | * PM33340UW - SmartRAID Adapter for PCI ultra wide multichannel |
| 341 | * |
| 342 | * The above list is just an indication: as a matter of fact all DPT |
| 343 | * boards using the EATA/DMA protocol are supported by this driver, |
| 344 | * since they use exactely the same programming interface. |
| 345 | * |
| 346 | * The DPT PM2001 provides only the EATA/PIO interface and hence is not |
| 347 | * supported by this driver. |
| 348 | * |
| 349 | * This code has been tested with up to 3 Distributed Processing Technology |
| 350 | * PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers, |
| 351 | * in any combination of private and shared IRQ. |
| 352 | * PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS |
| 353 | * v003.D0, firmware v07G.0). |
| 354 | * |
| 355 | * DPT SmartRAID boards support "Hardware Array" - a group of disk drives |
| 356 | * which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented |
| 357 | * in host adapter hardware. Hardware Arrays are fully compatible with this |
| 358 | * driver, since they look to it as a single disk drive. |
| 359 | * |
| 360 | * WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix" |
| 361 | * as the current OS in the DPTMGR "Initial System Installation" menu. |
| 362 | * Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0), |
| 363 | * which is not supported by the actual SCSI subsystem. |
| 364 | * To get the "Array Group" functionality, the Linux MD driver must be used |
| 365 | * instead of the DPT "Array Group" feature. |
| 366 | * |
| 367 | * Multiple ISA, EISA and PCI boards can be configured in the same system. |
| 368 | * It is suggested to put all the EISA boards on the same IRQ level, all |
| 369 | * the PCI boards on another IRQ level, while ISA boards cannot share |
| 370 | * interrupts. |
| 371 | * |
| 372 | * If you configure multiple boards on the same IRQ, the interrupt must |
| 373 | * be _level_ triggered (not _edge_ triggered). |
| 374 | * |
| 375 | * This driver detects EATA boards by probes at fixed port addresses, |
| 376 | * so no BIOS32 or PCI BIOS support is required. |
| 377 | * The suggested way to detect a generic EATA PCI board is to force on it |
| 378 | * any unused EISA address, even if there are other controllers on the EISA |
| 379 | * bus, or even if you system has no EISA bus at all. |
| 380 | * Do not force any ISA address on EATA PCI boards. |
| 381 | * |
| 382 | * If PCI bios support is configured into the kernel, BIOS32 is used to |
| 383 | * include in the list of i/o ports to be probed all the PCI SCSI controllers. |
| 384 | * |
| 385 | * Due to a DPT BIOS "feature", it might not be possible to force an EISA |
| 386 | * address on more than a single DPT PCI board, so in this case you have to |
| 387 | * let the PCI BIOS assign the addresses. |
| 388 | * |
| 389 | * The sequence of detection probes is: |
| 390 | * |
| 391 | * - ISA 0x1F0; |
| 392 | * - PCI SCSI controllers (only if BIOS32 is available); |
| 393 | * - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15); |
| 394 | * - ISA 0x170, 0x230, 0x330. |
| 395 | * |
| 396 | * The above list of detection probes can be totally replaced by the |
| 397 | * boot command line option: "eata=port0,port1,port2,...", where the |
| 398 | * port0, port1... arguments are ISA/EISA/PCI addresses to be probed. |
| 399 | * For example using "eata=0x7410,0x7450,0x230", the driver probes |
| 400 | * only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230, |
| 401 | * in this order; "eata=0" totally disables this driver. |
| 402 | * |
| 403 | * After the optional list of detection probes, other possible command line |
| 404 | * options are: |
| 405 | * |
| 406 | * et:y force use of extended translation (255 heads, 63 sectors); |
| 407 | * et:n use disk geometry detected by scsicam_bios_param; |
| 408 | * rs:y reverse scan order while detecting PCI boards; |
| 409 | * rs:n use BIOS order while detecting PCI boards; |
| 410 | * lc:y enables linked commands; |
| 411 | * lc:n disables linked commands; |
| 412 | * tm:0 disables tagged commands (same as tc:n); |
| 413 | * tm:1 use simple queue tags (same as tc:y); |
| 414 | * tm:2 use ordered queue tags (same as tc:2); |
| 415 | * mq:xx set the max queue depth to the value xx (2 <= xx <= 32). |
| 416 | * |
| 417 | * The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n". |
| 418 | * An example using the list of detection probes could be: |
| 419 | * "eata=0x7410,0x230,lc:y,tm:2,mq:4,et:n". |
| 420 | * |
| 421 | * When loading as a module, parameters can be specified as well. |
| 422 | * The above example would be (use 1 in place of y and 0 in place of n): |
| 423 | * |
| 424 | * modprobe eata io_port=0x7410,0x230 linked_comm=1 \ |
| 425 | * max_queue_depth=4 ext_tran=0 tag_mode=2 \ |
| 426 | * rev_scan=1 |
| 427 | * |
| 428 | * ---------------------------------------------------------------------------- |
| 429 | * In this implementation, linked commands are designed to work with any DISK |
| 430 | * or CD-ROM, since this linking has only the intent of clustering (time-wise) |
| 431 | * and reordering by elevator sorting commands directed to each device, |
| 432 | * without any relation with the actual SCSI protocol between the controller |
| 433 | * and the device. |
| 434 | * If Q is the queue depth reported at boot time for each device (also named |
| 435 | * cmds/lun) and Q > 2, whenever there is already an active command to the |
| 436 | * device all other commands to the same device (up to Q-1) are kept waiting |
| 437 | * in the elevator sorting queue. When the active command completes, the |
| 438 | * commands in this queue are sorted by sector address. The sort is chosen |
| 439 | * between increasing or decreasing by minimizing the seek distance between |
| 440 | * the sector of the commands just completed and the sector of the first |
| 441 | * command in the list to be sorted. |
| 442 | * Trivial math assures that the unsorted average seek distance when doing |
| 443 | * random seeks over S sectors is S/3. |
| 444 | * When (Q-1) requests are uniformly distributed over S sectors, the average |
| 445 | * distance between two adjacent requests is S/((Q-1) + 1), so the sorted |
| 446 | * average seek distance for (Q-1) random requests over S sectors is S/Q. |
| 447 | * The elevator sorting hence divides the seek distance by a factor Q/3. |
| 448 | * The above pure geometric remarks are valid in all cases and the |
| 449 | * driver effectively reduces the seek distance by the predicted factor |
| 450 | * when there are Q concurrent read i/o operations on the device, but this |
| 451 | * does not necessarily results in a noticeable performance improvement: |
| 452 | * your mileage may vary.... |
| 453 | * |
| 454 | * Note: command reordering inside a batch of queued commands could cause |
| 455 | * wrong results only if there is at least one write request and the |
| 456 | * intersection (sector-wise) of all requests is not empty. |
| 457 | * When the driver detects a batch including overlapping requests |
| 458 | * (a really rare event) strict serial (pid) order is enforced. |
| 459 | * ---------------------------------------------------------------------------- |
| 460 | * The extended translation option (et:y) is useful when using large physical |
| 461 | * disks/arrays. It could also be useful when switching between Adaptec boards |
| 462 | * and DPT boards without reformatting the disk. |
| 463 | * When a boot disk is partitioned with extended translation, in order to |
| 464 | * be able to boot it with a DPT board is could be necessary to add to |
| 465 | * lilo.conf additional commands as in the following example: |
| 466 | * |
| 467 | * fix-table |
| 468 | * disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546 |
| 469 | * |
| 470 | * where the above geometry should be replaced with the one reported at |
| 471 | * power up by the DPT controller. |
| 472 | * ---------------------------------------------------------------------------- |
| 473 | * |
| 474 | * The boards are named EATA0, EATA1,... according to the detection order. |
| 475 | * |
| 476 | * In order to support multiple ISA boards in a reliable way, |
| 477 | * the driver sets host->wish_block = 1 for all ISA boards. |
| 478 | */ |
| 479 | |
| 480 | #include <linux/config.h> |
| 481 | #include <linux/string.h> |
| 482 | #include <linux/kernel.h> |
| 483 | #include <linux/ioport.h> |
| 484 | #include <linux/delay.h> |
| 485 | #include <linux/proc_fs.h> |
| 486 | #include <linux/blkdev.h> |
| 487 | #include <linux/interrupt.h> |
| 488 | #include <linux/stat.h> |
| 489 | #include <linux/pci.h> |
| 490 | #include <linux/init.h> |
| 491 | #include <linux/ctype.h> |
| 492 | #include <linux/spinlock.h> |
| 493 | #include <asm/byteorder.h> |
| 494 | #include <asm/dma.h> |
| 495 | #include <asm/io.h> |
| 496 | #include <asm/irq.h> |
| 497 | |
| 498 | #include <scsi/scsi.h> |
| 499 | #include <scsi/scsi_cmnd.h> |
| 500 | #include <scsi/scsi_device.h> |
| 501 | #include <scsi/scsi_host.h> |
| 502 | #include <scsi/scsi_tcq.h> |
| 503 | #include <scsi/scsicam.h> |
| 504 | |
| 505 | static int eata2x_detect(struct scsi_host_template *); |
| 506 | static int eata2x_release(struct Scsi_Host *); |
| 507 | static int eata2x_queuecommand(struct scsi_cmnd *, |
| 508 | void (*done) (struct scsi_cmnd *)); |
| 509 | static int eata2x_eh_abort(struct scsi_cmnd *); |
| 510 | static int eata2x_eh_host_reset(struct scsi_cmnd *); |
| 511 | static int eata2x_bios_param(struct scsi_device *, struct block_device *, |
| 512 | sector_t, int *); |
| 513 | static int eata2x_slave_configure(struct scsi_device *); |
| 514 | |
| 515 | static struct scsi_host_template driver_template = { |
| 516 | .name = "EATA/DMA 2.0x rev. 8.10.00 ", |
| 517 | .detect = eata2x_detect, |
| 518 | .release = eata2x_release, |
| 519 | .queuecommand = eata2x_queuecommand, |
| 520 | .eh_abort_handler = eata2x_eh_abort, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | .eh_host_reset_handler = eata2x_eh_host_reset, |
| 522 | .bios_param = eata2x_bios_param, |
| 523 | .slave_configure = eata2x_slave_configure, |
| 524 | .this_id = 7, |
| 525 | .unchecked_isa_dma = 1, |
| 526 | .use_clustering = ENABLE_CLUSTERING |
| 527 | }; |
| 528 | |
| 529 | #if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD) |
| 530 | #error "Adjust your <asm/byteorder.h> defines" |
| 531 | #endif |
| 532 | |
| 533 | /* Subversion values */ |
| 534 | #define ISA 0 |
| 535 | #define ESA 1 |
| 536 | |
| 537 | #undef FORCE_CONFIG |
| 538 | |
| 539 | #undef DEBUG_LINKED_COMMANDS |
| 540 | #undef DEBUG_DETECT |
| 541 | #undef DEBUG_PCI_DETECT |
| 542 | #undef DEBUG_INTERRUPT |
| 543 | #undef DEBUG_RESET |
| 544 | #undef DEBUG_GENERATE_ERRORS |
| 545 | #undef DEBUG_GENERATE_ABORTS |
| 546 | #undef DEBUG_GEOMETRY |
| 547 | |
| 548 | #define MAX_ISA 4 |
| 549 | #define MAX_VESA 0 |
| 550 | #define MAX_EISA 15 |
| 551 | #define MAX_PCI 16 |
| 552 | #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI) |
| 553 | #define MAX_CHANNEL 4 |
| 554 | #define MAX_LUN 32 |
| 555 | #define MAX_TARGET 32 |
| 556 | #define MAX_MAILBOXES 64 |
| 557 | #define MAX_SGLIST 64 |
| 558 | #define MAX_LARGE_SGLIST 122 |
| 559 | #define MAX_INTERNAL_RETRIES 64 |
| 560 | #define MAX_CMD_PER_LUN 2 |
| 561 | #define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN) |
| 562 | |
| 563 | #define SKIP ULONG_MAX |
| 564 | #define FREE 0 |
| 565 | #define IN_USE 1 |
| 566 | #define LOCKED 2 |
| 567 | #define IN_RESET 3 |
| 568 | #define IGNORE 4 |
| 569 | #define READY 5 |
| 570 | #define ABORTING 6 |
| 571 | #define NO_DMA 0xff |
| 572 | #define MAXLOOP 10000 |
| 573 | #define TAG_DISABLED 0 |
| 574 | #define TAG_SIMPLE 1 |
| 575 | #define TAG_ORDERED 2 |
| 576 | |
| 577 | #define REG_CMD 7 |
| 578 | #define REG_STATUS 7 |
| 579 | #define REG_AUX_STATUS 8 |
| 580 | #define REG_DATA 0 |
| 581 | #define REG_DATA2 1 |
| 582 | #define REG_SEE 6 |
| 583 | #define REG_LOW 2 |
| 584 | #define REG_LM 3 |
| 585 | #define REG_MID 4 |
| 586 | #define REG_MSB 5 |
| 587 | #define REGION_SIZE 9UL |
| 588 | #define MAX_ISA_ADDR 0x03ff |
| 589 | #define MIN_EISA_ADDR 0x1c88 |
| 590 | #define MAX_EISA_ADDR 0xfc88 |
| 591 | #define BSY_ASSERTED 0x80 |
| 592 | #define DRQ_ASSERTED 0x08 |
| 593 | #define ABSY_ASSERTED 0x01 |
| 594 | #define IRQ_ASSERTED 0x02 |
| 595 | #define READ_CONFIG_PIO 0xf0 |
| 596 | #define SET_CONFIG_PIO 0xf1 |
| 597 | #define SEND_CP_PIO 0xf2 |
| 598 | #define RECEIVE_SP_PIO 0xf3 |
| 599 | #define TRUNCATE_XFR_PIO 0xf4 |
| 600 | #define RESET_PIO 0xf9 |
| 601 | #define READ_CONFIG_DMA 0xfd |
| 602 | #define SET_CONFIG_DMA 0xfe |
| 603 | #define SEND_CP_DMA 0xff |
| 604 | #define ASOK 0x00 |
| 605 | #define ASST 0x01 |
| 606 | |
| 607 | #define YESNO(a) ((a) ? 'y' : 'n') |
| 608 | #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM) |
| 609 | |
| 610 | /* "EATA", in Big Endian format */ |
| 611 | #define EATA_SIG_BE 0x45415441 |
| 612 | |
| 613 | /* Number of valid bytes in the board config structure for EATA 2.0x */ |
| 614 | #define EATA_2_0A_SIZE 28 |
| 615 | #define EATA_2_0B_SIZE 30 |
| 616 | #define EATA_2_0C_SIZE 34 |
| 617 | |
| 618 | /* Board info structure */ |
| 619 | struct eata_info { |
| 620 | u_int32_t data_len; /* Number of valid bytes after this field */ |
| 621 | u_int32_t sign; /* ASCII "EATA" signature */ |
| 622 | |
| 623 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 624 | unchar version : 4, |
| 625 | : 4; |
| 626 | unchar haaval : 1, |
| 627 | ata : 1, |
| 628 | drqvld : 1, |
| 629 | dmasup : 1, |
| 630 | morsup : 1, |
| 631 | trnxfr : 1, |
| 632 | tarsup : 1, |
| 633 | ocsena : 1; |
| 634 | #else |
| 635 | unchar : 4, /* unused low nibble */ |
| 636 | version : 4; /* EATA version, should be 0x1 */ |
| 637 | unchar ocsena : 1, /* Overlap Command Support Enabled */ |
| 638 | tarsup : 1, /* Target Mode Supported */ |
| 639 | trnxfr : 1, /* Truncate Transfer Cmd NOT Necessary */ |
| 640 | morsup : 1, /* More Supported */ |
| 641 | dmasup : 1, /* DMA Supported */ |
| 642 | drqvld : 1, /* DRQ Index (DRQX) is valid */ |
| 643 | ata : 1, /* This is an ATA device */ |
| 644 | haaval : 1; /* Host Adapter Address Valid */ |
| 645 | #endif |
| 646 | |
| 647 | ushort cp_pad_len; /* Number of pad bytes after cp_len */ |
| 648 | unchar host_addr[4]; /* Host Adapter SCSI ID for channels 3, 2, 1, 0 */ |
| 649 | u_int32_t cp_len; /* Number of valid bytes in cp */ |
| 650 | u_int32_t sp_len; /* Number of valid bytes in sp */ |
| 651 | ushort queue_size; /* Max number of cp that can be queued */ |
| 652 | ushort unused; |
| 653 | ushort scatt_size; /* Max number of entries in scatter/gather table */ |
| 654 | |
| 655 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 656 | unchar drqx : 2, |
| 657 | second : 1, |
| 658 | irq_tr : 1, |
| 659 | irq : 4; |
| 660 | unchar sync; |
| 661 | unchar : 4, |
| 662 | res1 : 1, |
| 663 | large_sg : 1, |
| 664 | forcaddr : 1, |
| 665 | isaena : 1; |
| 666 | unchar max_chan : 3, |
| 667 | max_id : 5; |
| 668 | unchar max_lun; |
| 669 | unchar eisa : 1, |
| 670 | pci : 1, |
| 671 | idquest : 1, |
| 672 | m1 : 1, |
| 673 | : 4; |
| 674 | #else |
| 675 | unchar irq : 4, /* Interrupt Request assigned to this controller */ |
| 676 | irq_tr : 1, /* 0 for edge triggered, 1 for level triggered */ |
| 677 | second : 1, /* 1 if this is a secondary (not primary) controller */ |
| 678 | drqx : 2; /* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */ |
| 679 | unchar sync; /* 1 if scsi target id 7...0 is running sync scsi */ |
| 680 | |
| 681 | /* Structure extension defined in EATA 2.0B */ |
| 682 | unchar isaena : 1, /* ISA i/o addressing is disabled/enabled */ |
| 683 | forcaddr : 1, /* Port address has been forced */ |
| 684 | large_sg : 1, /* 1 if large SG lists are supported */ |
| 685 | res1 : 1, |
| 686 | : 4; |
| 687 | unchar max_id : 5, /* Max SCSI target ID number */ |
| 688 | max_chan : 3; /* Max SCSI channel number on this board */ |
| 689 | |
| 690 | /* Structure extension defined in EATA 2.0C */ |
| 691 | unchar max_lun; /* Max SCSI LUN number */ |
| 692 | unchar |
| 693 | : 4, |
| 694 | m1 : 1, /* This is a PCI with an M1 chip installed */ |
| 695 | idquest : 1, /* RAIDNUM returned is questionable */ |
| 696 | pci : 1, /* This board is PCI */ |
| 697 | eisa : 1; /* This board is EISA */ |
| 698 | #endif |
| 699 | |
| 700 | unchar raidnum; /* Uniquely identifies this HBA in a system */ |
| 701 | unchar notused; |
| 702 | |
| 703 | ushort ipad[247]; |
| 704 | }; |
| 705 | |
| 706 | /* Board config structure */ |
| 707 | struct eata_config { |
| 708 | ushort len; /* Number of bytes following this field */ |
| 709 | |
| 710 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 711 | unchar : 4, |
| 712 | tarena : 1, |
| 713 | mdpena : 1, |
| 714 | ocena : 1, |
| 715 | edis : 1; |
| 716 | #else |
| 717 | unchar edis : 1, /* Disable EATA interface after config command */ |
| 718 | ocena : 1, /* Overlapped Commands Enabled */ |
| 719 | mdpena : 1, /* Transfer all Modified Data Pointer Messages */ |
| 720 | tarena : 1, /* Target Mode Enabled for this controller */ |
| 721 | : 4; |
| 722 | #endif |
| 723 | unchar cpad[511]; |
| 724 | }; |
| 725 | |
| 726 | /* Returned status packet structure */ |
| 727 | struct mssp { |
| 728 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 729 | unchar eoc : 1, |
| 730 | adapter_status : 7; |
| 731 | #else |
| 732 | unchar adapter_status : 7, /* State related to current command */ |
| 733 | eoc : 1; /* End Of Command (1 = command completed) */ |
| 734 | #endif |
| 735 | unchar target_status; /* SCSI status received after data transfer */ |
| 736 | unchar unused[2]; |
| 737 | u_int32_t inv_res_len; /* Number of bytes not transferred */ |
| 738 | u_int32_t cpp_index; /* Index of address set in cp */ |
| 739 | char mess[12]; |
| 740 | }; |
| 741 | |
| 742 | struct sg_list { |
| 743 | unsigned int address; /* Segment Address */ |
| 744 | unsigned int num_bytes; /* Segment Length */ |
| 745 | }; |
| 746 | |
| 747 | /* MailBox SCSI Command Packet */ |
| 748 | struct mscp { |
| 749 | #if defined(__BIG_ENDIAN_BITFIELD) |
| 750 | unchar din : 1, |
| 751 | dout : 1, |
| 752 | interp : 1, |
| 753 | : 1, |
| 754 | sg : 1, |
| 755 | reqsen :1, |
| 756 | init : 1, |
| 757 | sreset : 1; |
| 758 | unchar sense_len; |
| 759 | unchar unused[3]; |
| 760 | unchar : 7, |
| 761 | fwnest : 1; |
| 762 | unchar : 5, |
| 763 | hbaci : 1, |
| 764 | iat : 1, |
| 765 | phsunit : 1; |
| 766 | unchar channel : 3, |
| 767 | target : 5; |
| 768 | unchar one : 1, |
| 769 | dispri : 1, |
| 770 | luntar : 1, |
| 771 | lun : 5; |
| 772 | #else |
| 773 | unchar sreset :1, /* SCSI Bus Reset Signal should be asserted */ |
| 774 | init :1, /* Re-initialize controller and self test */ |
| 775 | reqsen :1, /* Transfer Request Sense Data to addr using DMA */ |
| 776 | sg :1, /* Use Scatter/Gather */ |
| 777 | :1, |
| 778 | interp :1, /* The controller interprets cp, not the target */ |
| 779 | dout :1, /* Direction of Transfer is Out (Host to Target) */ |
| 780 | din :1; /* Direction of Transfer is In (Target to Host) */ |
| 781 | unchar sense_len; /* Request Sense Length */ |
| 782 | unchar unused[3]; |
| 783 | unchar fwnest : 1, /* Send command to a component of an Array Group */ |
| 784 | : 7; |
| 785 | unchar phsunit : 1, /* Send to Target Physical Unit (bypass RAID) */ |
| 786 | iat : 1, /* Inhibit Address Translation */ |
| 787 | hbaci : 1, /* Inhibit HBA Caching for this command */ |
| 788 | : 5; |
| 789 | unchar target : 5, /* SCSI target ID */ |
| 790 | channel : 3; /* SCSI channel number */ |
| 791 | unchar lun : 5, /* SCSI logical unit number */ |
| 792 | luntar : 1, /* This cp is for Target (not LUN) */ |
| 793 | dispri : 1, /* Disconnect Privilege granted */ |
| 794 | one : 1; /* 1 */ |
| 795 | #endif |
| 796 | |
| 797 | unchar mess[3]; /* Massage to/from Target */ |
| 798 | unchar cdb[12]; /* Command Descriptor Block */ |
| 799 | u_int32_t data_len; /* If sg=0 Data Length, if sg=1 sglist length */ |
| 800 | u_int32_t cpp_index; /* Index of address to be returned in sp */ |
| 801 | u_int32_t data_address; /* If sg=0 Data Address, if sg=1 sglist address */ |
| 802 | u_int32_t sp_dma_addr; /* Address where sp is DMA'ed when cp completes */ |
| 803 | u_int32_t sense_addr; /* Address where Sense Data is DMA'ed on error */ |
| 804 | |
| 805 | /* Additional fields begin here. */ |
| 806 | struct scsi_cmnd *SCpnt; |
| 807 | |
| 808 | /* All the cp structure is zero filled by queuecommand except the |
| 809 | following CP_TAIL_SIZE bytes, initialized by detect */ |
| 810 | dma_addr_t cp_dma_addr; /* dma handle for this cp structure */ |
| 811 | struct sg_list *sglist; /* pointer to the allocated SG list */ |
| 812 | }; |
| 813 | |
| 814 | #define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t)) |
| 815 | |
| 816 | struct hostdata { |
| 817 | struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */ |
| 818 | unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */ |
| 819 | unsigned int last_cp_used; /* Index of last mailbox used */ |
| 820 | unsigned int iocount; /* Total i/o done for this board */ |
| 821 | int board_number; /* Number of this board */ |
| 822 | char board_name[16]; /* Name of this board */ |
| 823 | int in_reset; /* True if board is doing a reset */ |
| 824 | int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */ |
| 825 | int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If 1 redo i/o on target */ |
| 826 | unsigned int retries; /* Number of internal retries */ |
| 827 | unsigned long last_retried_pid; /* Pid of last retried command */ |
| 828 | unsigned char subversion; /* Bus type, either ISA or EISA/PCI */ |
| 829 | unsigned char protocol_rev; /* EATA 2.0 rev., 'A' or 'B' or 'C' */ |
| 830 | unsigned char is_pci; /* 1 is bus type is PCI */ |
| 831 | struct pci_dev *pdev; /* pdev for PCI bus, NULL otherwise */ |
| 832 | struct mssp *sp_cpu_addr; /* cpu addr for DMA buffer sp */ |
| 833 | dma_addr_t sp_dma_addr; /* dma handle for DMA buffer sp */ |
| 834 | struct mssp sp; /* Local copy of sp buffer */ |
| 835 | }; |
| 836 | |
| 837 | static struct Scsi_Host *sh[MAX_BOARDS]; |
| 838 | static const char *driver_name = "EATA"; |
| 839 | static char sha[MAX_BOARDS]; |
| 840 | static DEFINE_SPINLOCK(driver_lock); |
| 841 | |
| 842 | /* Initialize num_boards so that ihdlr can work while detect is in progress */ |
| 843 | static unsigned int num_boards = MAX_BOARDS; |
| 844 | |
| 845 | static unsigned long io_port[] = { |
| 846 | |
| 847 | /* Space for MAX_INT_PARAM ports usable while loading as a module */ |
| 848 | SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, |
| 849 | SKIP, SKIP, |
| 850 | |
| 851 | /* First ISA */ |
| 852 | 0x1f0, |
| 853 | |
| 854 | /* Space for MAX_PCI ports possibly reported by PCI_BIOS */ |
| 855 | SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, |
| 856 | SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, |
| 857 | |
| 858 | /* MAX_EISA ports */ |
| 859 | 0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88, |
| 860 | 0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88, |
| 861 | |
| 862 | /* Other (MAX_ISA - 1) ports */ |
| 863 | 0x170, 0x230, 0x330, |
| 864 | |
| 865 | /* End of list */ |
| 866 | 0x0 |
| 867 | }; |
| 868 | |
| 869 | /* Device is Big Endian */ |
| 870 | #define H2DEV(x) cpu_to_be32(x) |
| 871 | #define DEV2H(x) be32_to_cpu(x) |
| 872 | #define H2DEV16(x) cpu_to_be16(x) |
| 873 | #define DEV2H16(x) be16_to_cpu(x) |
| 874 | |
| 875 | /* But transfer orientation from the 16 bit data register is Little Endian */ |
| 876 | #define REG2H(x) le16_to_cpu(x) |
| 877 | |
| 878 | static irqreturn_t do_interrupt_handler(int, void *, struct pt_regs *); |
| 879 | static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *, |
| 880 | unsigned int); |
| 881 | static int do_trace = 0; |
| 882 | static int setup_done = 0; |
| 883 | static int link_statistics; |
| 884 | static int ext_tran = 0; |
| 885 | static int rev_scan = 1; |
| 886 | |
| 887 | #if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE) |
| 888 | static int tag_mode = TAG_SIMPLE; |
| 889 | #else |
| 890 | static int tag_mode = TAG_DISABLED; |
| 891 | #endif |
| 892 | |
| 893 | #if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS) |
| 894 | static int linked_comm = 1; |
| 895 | #else |
| 896 | static int linked_comm = 0; |
| 897 | #endif |
| 898 | |
| 899 | #if defined(CONFIG_SCSI_EATA_MAX_TAGS) |
| 900 | static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS; |
| 901 | #else |
| 902 | static int max_queue_depth = MAX_CMD_PER_LUN; |
| 903 | #endif |
| 904 | |
| 905 | #if defined(CONFIG_ISA) |
| 906 | static int isa_probe = 1; |
| 907 | #else |
| 908 | static int isa_probe = 0; |
| 909 | #endif |
| 910 | |
| 911 | #if defined(CONFIG_EISA) |
| 912 | static int eisa_probe = 1; |
| 913 | #else |
| 914 | static int eisa_probe = 0; |
| 915 | #endif |
| 916 | |
| 917 | #if defined(CONFIG_PCI) |
| 918 | static int pci_probe = 1; |
| 919 | #else |
| 920 | static int pci_probe = 0; |
| 921 | #endif |
| 922 | |
| 923 | #define MAX_INT_PARAM 10 |
| 924 | #define MAX_BOOT_OPTIONS_SIZE 256 |
| 925 | static char boot_options[MAX_BOOT_OPTIONS_SIZE]; |
| 926 | |
| 927 | #if defined(MODULE) |
| 928 | #include <linux/module.h> |
| 929 | #include <linux/moduleparam.h> |
| 930 | |
| 931 | module_param_string(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0); |
| 932 | MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option." |
| 933 | " Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\""); |
| 934 | MODULE_AUTHOR("Dario Ballabio"); |
| 935 | MODULE_LICENSE("GPL"); |
| 936 | MODULE_DESCRIPTION("EATA/DMA SCSI Driver"); |
| 937 | |
| 938 | #endif |
| 939 | |
| 940 | static int eata2x_slave_configure(struct scsi_device *dev) |
| 941 | { |
| 942 | int tqd, utqd; |
| 943 | char *tag_suffix, *link_suffix; |
| 944 | struct Scsi_Host *shost = dev->host; |
| 945 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 946 | |
| 947 | utqd = MAX_CMD_PER_LUN; |
| 948 | tqd = max_queue_depth; |
| 949 | |
| 950 | if (TLDEV(dev->type) && dev->tagged_supported) { |
| 951 | if (tag_mode == TAG_SIMPLE) { |
| 952 | scsi_adjust_queue_depth(dev, MSG_SIMPLE_TAG, tqd); |
| 953 | tag_suffix = ", simple tags"; |
| 954 | } else if (tag_mode == TAG_ORDERED) { |
| 955 | scsi_adjust_queue_depth(dev, MSG_ORDERED_TAG, tqd); |
| 956 | tag_suffix = ", ordered tags"; |
| 957 | } else { |
| 958 | scsi_adjust_queue_depth(dev, 0, tqd); |
| 959 | tag_suffix = ", no tags"; |
| 960 | } |
| 961 | } else if (TLDEV(dev->type) && linked_comm) { |
| 962 | scsi_adjust_queue_depth(dev, 0, tqd); |
| 963 | tag_suffix = ", untagged"; |
| 964 | } else { |
| 965 | scsi_adjust_queue_depth(dev, 0, utqd); |
| 966 | tag_suffix = ""; |
| 967 | } |
| 968 | |
| 969 | if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2) |
| 970 | link_suffix = ", sorted"; |
| 971 | else if (TLDEV(dev->type)) |
| 972 | link_suffix = ", unsorted"; |
| 973 | else |
| 974 | link_suffix = ""; |
| 975 | |
| 976 | printk("%s: scsi%d, channel %d, id %d, lun %d, cmds/lun %d%s%s.\n", |
| 977 | ha->board_name, shost->host_no, dev->channel, dev->id, dev->lun, |
| 978 | dev->queue_depth, link_suffix, tag_suffix); |
| 979 | |
| 980 | return 0; |
| 981 | } |
| 982 | |
| 983 | static int wait_on_busy(unsigned long iobase, unsigned int loop) |
| 984 | { |
| 985 | while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) { |
| 986 | udelay(1L); |
| 987 | if (--loop == 0) |
| 988 | return 1; |
| 989 | } |
| 990 | return 0; |
| 991 | } |
| 992 | |
| 993 | static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd) |
| 994 | { |
| 995 | unsigned char *byaddr; |
| 996 | unsigned long devaddr; |
| 997 | |
| 998 | if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP))) |
| 999 | return 1; |
| 1000 | |
| 1001 | if (addr) { |
| 1002 | devaddr = H2DEV(addr); |
| 1003 | byaddr = (unsigned char *)&devaddr; |
| 1004 | outb(byaddr[3], iobase + REG_LOW); |
| 1005 | outb(byaddr[2], iobase + REG_LM); |
| 1006 | outb(byaddr[1], iobase + REG_MID); |
| 1007 | outb(byaddr[0], iobase + REG_MSB); |
| 1008 | } |
| 1009 | |
| 1010 | outb(cmd, iobase + REG_CMD); |
| 1011 | return 0; |
| 1012 | } |
| 1013 | |
| 1014 | static int read_pio(unsigned long iobase, ushort * start, ushort * end) |
| 1015 | { |
| 1016 | unsigned int loop = MAXLOOP; |
| 1017 | ushort *p; |
| 1018 | |
| 1019 | for (p = start; p <= end; p++) { |
| 1020 | while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) { |
| 1021 | udelay(1L); |
| 1022 | if (--loop == 0) |
| 1023 | return 1; |
| 1024 | } |
| 1025 | loop = MAXLOOP; |
| 1026 | *p = REG2H(inw(iobase)); |
| 1027 | } |
| 1028 | |
| 1029 | return 0; |
| 1030 | } |
| 1031 | |
| 1032 | static struct pci_dev *get_pci_dev(unsigned long port_base) |
| 1033 | { |
| 1034 | #if defined(CONFIG_PCI) |
| 1035 | unsigned int addr; |
| 1036 | struct pci_dev *dev = NULL; |
| 1037 | |
| 1038 | while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { |
| 1039 | addr = pci_resource_start(dev, 0); |
| 1040 | |
| 1041 | #if defined(DEBUG_PCI_DETECT) |
| 1042 | printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n", |
| 1043 | driver_name, dev->bus->number, dev->devfn, addr); |
| 1044 | #endif |
| 1045 | |
| 1046 | /* we are in so much trouble for a pci hotplug system with this driver |
| 1047 | * anyway, so doing this at least lets people unload the driver and not |
| 1048 | * cause memory problems, but in general this is a bad thing to do (this |
| 1049 | * driver needs to be converted to the proper PCI api someday... */ |
| 1050 | pci_dev_put(dev); |
| 1051 | if (addr + PCI_BASE_ADDRESS_0 == port_base) |
| 1052 | return dev; |
| 1053 | } |
| 1054 | #endif /* end CONFIG_PCI */ |
| 1055 | return NULL; |
| 1056 | } |
| 1057 | |
| 1058 | static void enable_pci_ports(void) |
| 1059 | { |
| 1060 | #if defined(CONFIG_PCI) |
| 1061 | struct pci_dev *dev = NULL; |
| 1062 | |
| 1063 | while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { |
| 1064 | #if defined(DEBUG_PCI_DETECT) |
| 1065 | printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n", |
| 1066 | driver_name, dev->bus->number, dev->devfn); |
| 1067 | #endif |
| 1068 | |
| 1069 | if (pci_enable_device(dev)) |
| 1070 | printk |
| 1071 | ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n", |
| 1072 | driver_name, dev->bus->number, dev->devfn); |
| 1073 | } |
| 1074 | |
| 1075 | #endif /* end CONFIG_PCI */ |
| 1076 | } |
| 1077 | |
| 1078 | static int port_detect(unsigned long port_base, unsigned int j, |
| 1079 | struct scsi_host_template *tpnt) |
| 1080 | { |
| 1081 | unsigned char irq, dma_channel, subversion, i, is_pci = 0; |
| 1082 | unsigned char protocol_rev; |
| 1083 | struct eata_info info; |
| 1084 | char *bus_type, dma_name[16]; |
| 1085 | struct pci_dev *pdev; |
| 1086 | /* Allowed DMA channels for ISA (0 indicates reserved) */ |
| 1087 | unsigned char dma_channel_table[4] = { 5, 6, 7, 0 }; |
| 1088 | struct Scsi_Host *shost; |
| 1089 | struct hostdata *ha; |
| 1090 | char name[16]; |
| 1091 | |
| 1092 | sprintf(name, "%s%d", driver_name, j); |
| 1093 | |
| 1094 | if (!request_region(port_base, REGION_SIZE, driver_name)) { |
| 1095 | #if defined(DEBUG_DETECT) |
| 1096 | printk("%s: address 0x%03lx in use, skipping probe.\n", name, |
| 1097 | port_base); |
| 1098 | #endif |
| 1099 | goto fail; |
| 1100 | } |
| 1101 | |
| 1102 | spin_lock_irq(&driver_lock); |
| 1103 | |
| 1104 | if (do_dma(port_base, 0, READ_CONFIG_PIO)) { |
| 1105 | #if defined(DEBUG_DETECT) |
| 1106 | printk("%s: detect, do_dma failed at 0x%03lx.\n", name, |
| 1107 | port_base); |
| 1108 | #endif |
| 1109 | goto freelock; |
| 1110 | } |
| 1111 | |
| 1112 | /* Read the info structure */ |
| 1113 | if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) { |
| 1114 | #if defined(DEBUG_DETECT) |
| 1115 | printk("%s: detect, read_pio failed at 0x%03lx.\n", name, |
| 1116 | port_base); |
| 1117 | #endif |
| 1118 | goto freelock; |
| 1119 | } |
| 1120 | |
| 1121 | info.data_len = DEV2H(info.data_len); |
| 1122 | info.sign = DEV2H(info.sign); |
| 1123 | info.cp_pad_len = DEV2H16(info.cp_pad_len); |
| 1124 | info.cp_len = DEV2H(info.cp_len); |
| 1125 | info.sp_len = DEV2H(info.sp_len); |
| 1126 | info.scatt_size = DEV2H16(info.scatt_size); |
| 1127 | info.queue_size = DEV2H16(info.queue_size); |
| 1128 | |
| 1129 | /* Check the controller "EATA" signature */ |
| 1130 | if (info.sign != EATA_SIG_BE) { |
| 1131 | #if defined(DEBUG_DETECT) |
| 1132 | printk("%s: signature 0x%04x discarded.\n", name, info.sign); |
| 1133 | #endif |
| 1134 | goto freelock; |
| 1135 | } |
| 1136 | |
| 1137 | if (info.data_len < EATA_2_0A_SIZE) { |
| 1138 | printk |
| 1139 | ("%s: config structure size (%d bytes) too short, detaching.\n", |
| 1140 | name, info.data_len); |
| 1141 | goto freelock; |
| 1142 | } else if (info.data_len == EATA_2_0A_SIZE) |
| 1143 | protocol_rev = 'A'; |
| 1144 | else if (info.data_len == EATA_2_0B_SIZE) |
| 1145 | protocol_rev = 'B'; |
| 1146 | else |
| 1147 | protocol_rev = 'C'; |
| 1148 | |
| 1149 | if (protocol_rev != 'A' && info.forcaddr) { |
| 1150 | printk("%s: warning, port address has been forced.\n", name); |
| 1151 | bus_type = "PCI"; |
| 1152 | is_pci = 1; |
| 1153 | subversion = ESA; |
| 1154 | } else if (port_base > MAX_EISA_ADDR |
| 1155 | || (protocol_rev == 'C' && info.pci)) { |
| 1156 | bus_type = "PCI"; |
| 1157 | is_pci = 1; |
| 1158 | subversion = ESA; |
| 1159 | } else if (port_base >= MIN_EISA_ADDR |
| 1160 | || (protocol_rev == 'C' && info.eisa)) { |
| 1161 | bus_type = "EISA"; |
| 1162 | subversion = ESA; |
| 1163 | } else if (protocol_rev == 'C' && !info.eisa && !info.pci) { |
| 1164 | bus_type = "ISA"; |
| 1165 | subversion = ISA; |
| 1166 | } else if (port_base > MAX_ISA_ADDR) { |
| 1167 | bus_type = "PCI"; |
| 1168 | is_pci = 1; |
| 1169 | subversion = ESA; |
| 1170 | } else { |
| 1171 | bus_type = "ISA"; |
| 1172 | subversion = ISA; |
| 1173 | } |
| 1174 | |
| 1175 | if (!info.haaval || info.ata) { |
| 1176 | printk |
| 1177 | ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n", |
| 1178 | name, port_base, bus_type, info.haaval, info.ata); |
| 1179 | goto freelock; |
| 1180 | } |
| 1181 | |
| 1182 | if (info.drqvld) { |
| 1183 | if (subversion == ESA) |
| 1184 | printk("%s: warning, weird %s board using DMA.\n", name, |
| 1185 | bus_type); |
| 1186 | |
| 1187 | subversion = ISA; |
| 1188 | dma_channel = dma_channel_table[3 - info.drqx]; |
| 1189 | } else { |
| 1190 | if (subversion == ISA) |
| 1191 | printk("%s: warning, weird %s board not using DMA.\n", |
| 1192 | name, bus_type); |
| 1193 | |
| 1194 | subversion = ESA; |
| 1195 | dma_channel = NO_DMA; |
| 1196 | } |
| 1197 | |
| 1198 | if (!info.dmasup) |
| 1199 | printk("%s: warning, DMA protocol support not asserted.\n", |
| 1200 | name); |
| 1201 | |
| 1202 | irq = info.irq; |
| 1203 | |
| 1204 | if (subversion == ESA && !info.irq_tr) |
| 1205 | printk |
| 1206 | ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n", |
| 1207 | name, irq); |
| 1208 | |
| 1209 | if (is_pci) { |
| 1210 | pdev = get_pci_dev(port_base); |
| 1211 | if (!pdev) |
| 1212 | printk |
| 1213 | ("%s: warning, failed to get pci_dev structure.\n", |
| 1214 | name); |
| 1215 | } else |
| 1216 | pdev = NULL; |
| 1217 | |
| 1218 | if (pdev && (irq != pdev->irq)) { |
| 1219 | printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq, |
| 1220 | pdev->irq); |
| 1221 | irq = pdev->irq; |
| 1222 | } |
| 1223 | |
| 1224 | /* Board detected, allocate its IRQ */ |
| 1225 | if (request_irq(irq, do_interrupt_handler, |
| 1226 | SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 0), |
| 1227 | driver_name, (void *)&sha[j])) { |
| 1228 | printk("%s: unable to allocate IRQ %u, detaching.\n", name, |
| 1229 | irq); |
| 1230 | goto freelock; |
| 1231 | } |
| 1232 | |
| 1233 | if (subversion == ISA && request_dma(dma_channel, driver_name)) { |
| 1234 | printk("%s: unable to allocate DMA channel %u, detaching.\n", |
| 1235 | name, dma_channel); |
| 1236 | goto freeirq; |
| 1237 | } |
| 1238 | #if defined(FORCE_CONFIG) |
| 1239 | { |
| 1240 | struct eata_config *cf; |
| 1241 | dma_addr_t cf_dma_addr; |
| 1242 | |
| 1243 | cf = pci_alloc_consistent(pdev, sizeof(struct eata_config), |
| 1244 | &cf_dma_addr); |
| 1245 | |
| 1246 | if (!cf) { |
| 1247 | printk |
| 1248 | ("%s: config, pci_alloc_consistent failed, detaching.\n", |
| 1249 | name); |
| 1250 | goto freedma; |
| 1251 | } |
| 1252 | |
| 1253 | /* Set board configuration */ |
| 1254 | memset((char *)cf, 0, sizeof(struct eata_config)); |
| 1255 | cf->len = (ushort) H2DEV16((ushort) 510); |
| 1256 | cf->ocena = 1; |
| 1257 | |
| 1258 | if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) { |
| 1259 | printk |
| 1260 | ("%s: busy timeout sending configuration, detaching.\n", |
| 1261 | name); |
| 1262 | pci_free_consistent(pdev, sizeof(struct eata_config), |
| 1263 | cf, cf_dma_addr); |
| 1264 | goto freedma; |
| 1265 | } |
| 1266 | |
| 1267 | } |
| 1268 | #endif |
| 1269 | |
| 1270 | spin_unlock_irq(&driver_lock); |
| 1271 | sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata)); |
| 1272 | spin_lock_irq(&driver_lock); |
| 1273 | |
| 1274 | if (shost == NULL) { |
| 1275 | printk("%s: unable to register host, detaching.\n", name); |
| 1276 | goto freedma; |
| 1277 | } |
| 1278 | |
| 1279 | shost->io_port = port_base; |
| 1280 | shost->unique_id = port_base; |
| 1281 | shost->n_io_port = REGION_SIZE; |
| 1282 | shost->dma_channel = dma_channel; |
| 1283 | shost->irq = irq; |
| 1284 | shost->sg_tablesize = (ushort) info.scatt_size; |
| 1285 | shost->this_id = (ushort) info.host_addr[3]; |
| 1286 | shost->can_queue = (ushort) info.queue_size; |
| 1287 | shost->cmd_per_lun = MAX_CMD_PER_LUN; |
| 1288 | |
| 1289 | ha = (struct hostdata *)shost->hostdata; |
| 1290 | |
| 1291 | memset(ha, 0, sizeof(struct hostdata)); |
| 1292 | ha->subversion = subversion; |
| 1293 | ha->protocol_rev = protocol_rev; |
| 1294 | ha->is_pci = is_pci; |
| 1295 | ha->pdev = pdev; |
| 1296 | ha->board_number = j; |
| 1297 | |
| 1298 | if (ha->subversion == ESA) |
| 1299 | shost->unchecked_isa_dma = 0; |
| 1300 | else { |
| 1301 | unsigned long flags; |
| 1302 | shost->unchecked_isa_dma = 1; |
| 1303 | |
| 1304 | flags = claim_dma_lock(); |
| 1305 | disable_dma(dma_channel); |
| 1306 | clear_dma_ff(dma_channel); |
| 1307 | set_dma_mode(dma_channel, DMA_MODE_CASCADE); |
| 1308 | enable_dma(dma_channel); |
| 1309 | release_dma_lock(flags); |
| 1310 | |
| 1311 | } |
| 1312 | |
| 1313 | strcpy(ha->board_name, name); |
| 1314 | |
| 1315 | /* DPT PM2012 does not allow to detect sg_tablesize correctly */ |
| 1316 | if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) { |
| 1317 | printk("%s: detect, wrong n. of SG lists %d, fixed.\n", |
| 1318 | ha->board_name, shost->sg_tablesize); |
| 1319 | shost->sg_tablesize = MAX_SGLIST; |
| 1320 | } |
| 1321 | |
| 1322 | /* DPT PM2012 does not allow to detect can_queue correctly */ |
| 1323 | if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) { |
| 1324 | printk("%s: detect, wrong n. of mbox %d, fixed.\n", |
| 1325 | ha->board_name, shost->can_queue); |
| 1326 | shost->can_queue = MAX_MAILBOXES; |
| 1327 | } |
| 1328 | |
| 1329 | if (protocol_rev != 'A') { |
| 1330 | if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL) |
| 1331 | shost->max_channel = info.max_chan; |
| 1332 | |
| 1333 | if (info.max_id > 7 && info.max_id < MAX_TARGET) |
| 1334 | shost->max_id = info.max_id + 1; |
| 1335 | |
| 1336 | if (info.large_sg && shost->sg_tablesize == MAX_SGLIST) |
| 1337 | shost->sg_tablesize = MAX_LARGE_SGLIST; |
| 1338 | } |
| 1339 | |
| 1340 | if (protocol_rev == 'C') { |
| 1341 | if (info.max_lun > 7 && info.max_lun < MAX_LUN) |
| 1342 | shost->max_lun = info.max_lun + 1; |
| 1343 | } |
| 1344 | |
| 1345 | if (dma_channel == NO_DMA) |
| 1346 | sprintf(dma_name, "%s", "BMST"); |
| 1347 | else |
| 1348 | sprintf(dma_name, "DMA %u", dma_channel); |
| 1349 | |
| 1350 | spin_unlock_irq(&driver_lock); |
| 1351 | |
| 1352 | for (i = 0; i < shost->can_queue; i++) |
| 1353 | ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev, |
| 1354 | &ha->cp[i], |
| 1355 | sizeof(struct mscp), |
| 1356 | PCI_DMA_BIDIRECTIONAL); |
| 1357 | |
| 1358 | for (i = 0; i < shost->can_queue; i++) { |
| 1359 | size_t sz = shost->sg_tablesize *sizeof(struct sg_list); |
Al Viro | c53033f | 2005-10-21 03:22:08 -0400 | [diff] [blame^] | 1360 | gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | ha->cp[i].sglist = kmalloc(sz, gfp_mask); |
| 1362 | if (!ha->cp[i].sglist) { |
| 1363 | printk |
| 1364 | ("%s: kmalloc SGlist failed, mbox %d, detaching.\n", |
| 1365 | ha->board_name, i); |
| 1366 | goto release; |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev, |
| 1371 | sizeof(struct mssp), |
| 1372 | &ha->sp_dma_addr))) { |
| 1373 | printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name); |
| 1374 | goto release; |
| 1375 | } |
| 1376 | |
| 1377 | if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN) |
| 1378 | max_queue_depth = MAX_TAGGED_CMD_PER_LUN; |
| 1379 | |
| 1380 | if (max_queue_depth < MAX_CMD_PER_LUN) |
| 1381 | max_queue_depth = MAX_CMD_PER_LUN; |
| 1382 | |
| 1383 | if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE) |
| 1384 | tag_mode = TAG_ORDERED; |
| 1385 | |
| 1386 | if (j == 0) { |
| 1387 | printk |
| 1388 | ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n"); |
| 1389 | printk |
| 1390 | ("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, " |
| 1391 | "ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode, |
| 1392 | YESNO(linked_comm), max_queue_depth, YESNO(rev_scan), |
| 1393 | YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe), |
| 1394 | YESNO(pci_probe)); |
| 1395 | } |
| 1396 | |
| 1397 | printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n", |
| 1398 | ha->board_name, ha->protocol_rev, bus_type, |
| 1399 | (unsigned long)shost->io_port, shost->irq, dma_name, |
| 1400 | shost->sg_tablesize, shost->can_queue); |
| 1401 | |
| 1402 | if (shost->max_id > 8 || shost->max_lun > 8) |
| 1403 | printk |
| 1404 | ("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n", |
| 1405 | ha->board_name, shost->max_id, shost->max_lun); |
| 1406 | |
| 1407 | for (i = 0; i <= shost->max_channel; i++) |
| 1408 | printk("%s: SCSI channel %u enabled, host target ID %d.\n", |
| 1409 | ha->board_name, i, info.host_addr[3 - i]); |
| 1410 | |
| 1411 | #if defined(DEBUG_DETECT) |
| 1412 | printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, " |
| 1413 | "sec. %u, infol %d, cpl %d spl %d.\n", name, info.version, |
| 1414 | info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync, |
| 1415 | info.second, info.data_len, info.cp_len, info.sp_len); |
| 1416 | |
| 1417 | if (protocol_rev == 'B' || protocol_rev == 'C') |
| 1418 | printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, " |
| 1419 | "large_sg %u, res1 %u.\n", name, info.isaena, |
| 1420 | info.forcaddr, info.max_id, info.max_chan, info.large_sg, |
| 1421 | info.res1); |
| 1422 | |
| 1423 | if (protocol_rev == 'C') |
| 1424 | printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, " |
| 1425 | "raidnum %u.\n", name, info.max_lun, info.m1, |
| 1426 | info.idquest, info.pci, info.eisa, info.raidnum); |
| 1427 | #endif |
| 1428 | |
| 1429 | if (ha->pdev) { |
| 1430 | pci_set_master(ha->pdev); |
| 1431 | if (pci_set_dma_mask(ha->pdev, 0xffffffff)) |
| 1432 | printk("%s: warning, pci_set_dma_mask failed.\n", |
| 1433 | ha->board_name); |
| 1434 | } |
| 1435 | |
| 1436 | return 1; |
| 1437 | |
| 1438 | freedma: |
| 1439 | if (subversion == ISA) |
| 1440 | free_dma(dma_channel); |
| 1441 | freeirq: |
| 1442 | free_irq(irq, &sha[j]); |
| 1443 | freelock: |
| 1444 | spin_unlock_irq(&driver_lock); |
| 1445 | release_region(port_base, REGION_SIZE); |
| 1446 | fail: |
| 1447 | return 0; |
| 1448 | |
| 1449 | release: |
| 1450 | eata2x_release(shost); |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
| 1454 | static void internal_setup(char *str, int *ints) |
| 1455 | { |
| 1456 | int i, argc = ints[0]; |
| 1457 | char *cur = str, *pc; |
| 1458 | |
| 1459 | if (argc > 0) { |
| 1460 | if (argc > MAX_INT_PARAM) |
| 1461 | argc = MAX_INT_PARAM; |
| 1462 | |
| 1463 | for (i = 0; i < argc; i++) |
| 1464 | io_port[i] = ints[i + 1]; |
| 1465 | |
| 1466 | io_port[i] = 0; |
| 1467 | setup_done = 1; |
| 1468 | } |
| 1469 | |
| 1470 | while (cur && (pc = strchr(cur, ':'))) { |
| 1471 | int val = 0, c = *++pc; |
| 1472 | |
| 1473 | if (c == 'n' || c == 'N') |
| 1474 | val = 0; |
| 1475 | else if (c == 'y' || c == 'Y') |
| 1476 | val = 1; |
| 1477 | else |
| 1478 | val = (int)simple_strtoul(pc, NULL, 0); |
| 1479 | |
| 1480 | if (!strncmp(cur, "lc:", 3)) |
| 1481 | linked_comm = val; |
| 1482 | else if (!strncmp(cur, "tm:", 3)) |
| 1483 | tag_mode = val; |
| 1484 | else if (!strncmp(cur, "tc:", 3)) |
| 1485 | tag_mode = val; |
| 1486 | else if (!strncmp(cur, "mq:", 3)) |
| 1487 | max_queue_depth = val; |
| 1488 | else if (!strncmp(cur, "ls:", 3)) |
| 1489 | link_statistics = val; |
| 1490 | else if (!strncmp(cur, "et:", 3)) |
| 1491 | ext_tran = val; |
| 1492 | else if (!strncmp(cur, "rs:", 3)) |
| 1493 | rev_scan = val; |
| 1494 | else if (!strncmp(cur, "ip:", 3)) |
| 1495 | isa_probe = val; |
| 1496 | else if (!strncmp(cur, "ep:", 3)) |
| 1497 | eisa_probe = val; |
| 1498 | else if (!strncmp(cur, "pp:", 3)) |
| 1499 | pci_probe = val; |
| 1500 | |
| 1501 | if ((cur = strchr(cur, ','))) |
| 1502 | ++cur; |
| 1503 | } |
| 1504 | |
| 1505 | return; |
| 1506 | } |
| 1507 | |
| 1508 | static int option_setup(char *str) |
| 1509 | { |
| 1510 | int ints[MAX_INT_PARAM]; |
| 1511 | char *cur = str; |
| 1512 | int i = 1; |
| 1513 | |
| 1514 | while (cur && isdigit(*cur) && i <= MAX_INT_PARAM) { |
| 1515 | ints[i++] = simple_strtoul(cur, NULL, 0); |
| 1516 | |
| 1517 | if ((cur = strchr(cur, ',')) != NULL) |
| 1518 | cur++; |
| 1519 | } |
| 1520 | |
| 1521 | ints[0] = i - 1; |
| 1522 | internal_setup(cur, ints); |
| 1523 | return 1; |
| 1524 | } |
| 1525 | |
| 1526 | static void add_pci_ports(void) |
| 1527 | { |
| 1528 | #if defined(CONFIG_PCI) |
| 1529 | unsigned int addr, k; |
| 1530 | struct pci_dev *dev = NULL; |
| 1531 | |
| 1532 | for (k = 0; k < MAX_PCI; k++) { |
| 1533 | |
| 1534 | if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) |
| 1535 | break; |
| 1536 | |
| 1537 | if (pci_enable_device(dev)) { |
| 1538 | #if defined(DEBUG_PCI_DETECT) |
| 1539 | printk |
| 1540 | ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n", |
| 1541 | driver_name, dev->bus->number, dev->devfn); |
| 1542 | #endif |
| 1543 | |
| 1544 | continue; |
| 1545 | } |
| 1546 | |
| 1547 | addr = pci_resource_start(dev, 0); |
| 1548 | |
| 1549 | #if defined(DEBUG_PCI_DETECT) |
| 1550 | printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n", |
| 1551 | driver_name, k, dev->bus->number, dev->devfn, addr); |
| 1552 | #endif |
| 1553 | |
| 1554 | /* Order addresses according to rev_scan value */ |
| 1555 | io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] = |
| 1556 | addr + PCI_BASE_ADDRESS_0; |
| 1557 | } |
| 1558 | |
| 1559 | pci_dev_put(dev); |
| 1560 | #endif /* end CONFIG_PCI */ |
| 1561 | } |
| 1562 | |
| 1563 | static int eata2x_detect(struct scsi_host_template *tpnt) |
| 1564 | { |
| 1565 | unsigned int j = 0, k; |
| 1566 | |
| 1567 | tpnt->proc_name = "eata2x"; |
| 1568 | |
| 1569 | if (strlen(boot_options)) |
| 1570 | option_setup(boot_options); |
| 1571 | |
| 1572 | #if defined(MODULE) |
| 1573 | /* io_port could have been modified when loading as a module */ |
| 1574 | if (io_port[0] != SKIP) { |
| 1575 | setup_done = 1; |
| 1576 | io_port[MAX_INT_PARAM] = 0; |
| 1577 | } |
| 1578 | #endif |
| 1579 | |
| 1580 | for (k = MAX_INT_PARAM; io_port[k]; k++) |
| 1581 | if (io_port[k] == SKIP) |
| 1582 | continue; |
| 1583 | else if (io_port[k] <= MAX_ISA_ADDR) { |
| 1584 | if (!isa_probe) |
| 1585 | io_port[k] = SKIP; |
| 1586 | } else if (io_port[k] >= MIN_EISA_ADDR |
| 1587 | && io_port[k] <= MAX_EISA_ADDR) { |
| 1588 | if (!eisa_probe) |
| 1589 | io_port[k] = SKIP; |
| 1590 | } |
| 1591 | |
| 1592 | if (pci_probe) { |
| 1593 | if (!setup_done) |
| 1594 | add_pci_ports(); |
| 1595 | else |
| 1596 | enable_pci_ports(); |
| 1597 | } |
| 1598 | |
| 1599 | for (k = 0; io_port[k]; k++) { |
| 1600 | |
| 1601 | if (io_port[k] == SKIP) |
| 1602 | continue; |
| 1603 | |
| 1604 | if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) |
| 1605 | j++; |
| 1606 | } |
| 1607 | |
| 1608 | num_boards = j; |
| 1609 | return j; |
| 1610 | } |
| 1611 | |
| 1612 | static void map_dma(unsigned int i, struct hostdata *ha) |
| 1613 | { |
| 1614 | unsigned int k, count, pci_dir; |
| 1615 | struct scatterlist *sgpnt; |
| 1616 | struct mscp *cpp; |
| 1617 | struct scsi_cmnd *SCpnt; |
| 1618 | |
| 1619 | cpp = &ha->cp[i]; |
| 1620 | SCpnt = cpp->SCpnt; |
| 1621 | pci_dir = SCpnt->sc_data_direction; |
| 1622 | |
| 1623 | if (SCpnt->sense_buffer) |
| 1624 | cpp->sense_addr = |
| 1625 | H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer, |
| 1626 | sizeof SCpnt->sense_buffer, PCI_DMA_FROMDEVICE)); |
| 1627 | |
| 1628 | cpp->sense_len = sizeof SCpnt->sense_buffer; |
| 1629 | |
| 1630 | if (!SCpnt->use_sg) { |
| 1631 | |
| 1632 | /* If we get here with PCI_DMA_NONE, pci_map_single triggers a BUG() */ |
| 1633 | if (!SCpnt->request_bufflen) |
| 1634 | pci_dir = PCI_DMA_BIDIRECTIONAL; |
| 1635 | |
| 1636 | if (SCpnt->request_buffer) |
| 1637 | cpp->data_address = H2DEV(pci_map_single(ha->pdev, |
| 1638 | SCpnt-> |
| 1639 | request_buffer, |
| 1640 | SCpnt-> |
| 1641 | request_bufflen, |
| 1642 | pci_dir)); |
| 1643 | |
| 1644 | cpp->data_len = H2DEV(SCpnt->request_bufflen); |
| 1645 | return; |
| 1646 | } |
| 1647 | |
| 1648 | sgpnt = (struct scatterlist *)SCpnt->request_buffer; |
| 1649 | count = pci_map_sg(ha->pdev, sgpnt, SCpnt->use_sg, pci_dir); |
| 1650 | |
| 1651 | for (k = 0; k < count; k++) { |
| 1652 | cpp->sglist[k].address = H2DEV(sg_dma_address(&sgpnt[k])); |
| 1653 | cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(&sgpnt[k])); |
| 1654 | } |
| 1655 | |
| 1656 | cpp->sg = 1; |
| 1657 | cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist, |
| 1658 | SCpnt->use_sg * |
| 1659 | sizeof(struct sg_list), |
| 1660 | pci_dir)); |
| 1661 | cpp->data_len = H2DEV((SCpnt->use_sg * sizeof(struct sg_list))); |
| 1662 | } |
| 1663 | |
| 1664 | static void unmap_dma(unsigned int i, struct hostdata *ha) |
| 1665 | { |
| 1666 | unsigned int pci_dir; |
| 1667 | struct mscp *cpp; |
| 1668 | struct scsi_cmnd *SCpnt; |
| 1669 | |
| 1670 | cpp = &ha->cp[i]; |
| 1671 | SCpnt = cpp->SCpnt; |
| 1672 | pci_dir = SCpnt->sc_data_direction; |
| 1673 | |
| 1674 | if (DEV2H(cpp->sense_addr)) |
| 1675 | pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr), |
| 1676 | DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); |
| 1677 | |
| 1678 | if (SCpnt->use_sg) |
| 1679 | pci_unmap_sg(ha->pdev, SCpnt->request_buffer, SCpnt->use_sg, |
| 1680 | pci_dir); |
| 1681 | |
| 1682 | if (!DEV2H(cpp->data_len)) |
| 1683 | pci_dir = PCI_DMA_BIDIRECTIONAL; |
| 1684 | |
| 1685 | if (DEV2H(cpp->data_address)) |
| 1686 | pci_unmap_single(ha->pdev, DEV2H(cpp->data_address), |
| 1687 | DEV2H(cpp->data_len), pci_dir); |
| 1688 | } |
| 1689 | |
| 1690 | static void sync_dma(unsigned int i, struct hostdata *ha) |
| 1691 | { |
| 1692 | unsigned int pci_dir; |
| 1693 | struct mscp *cpp; |
| 1694 | struct scsi_cmnd *SCpnt; |
| 1695 | |
| 1696 | cpp = &ha->cp[i]; |
| 1697 | SCpnt = cpp->SCpnt; |
| 1698 | pci_dir = SCpnt->sc_data_direction; |
| 1699 | |
| 1700 | if (DEV2H(cpp->sense_addr)) |
| 1701 | pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr), |
| 1702 | DEV2H(cpp->sense_len), |
| 1703 | PCI_DMA_FROMDEVICE); |
| 1704 | |
| 1705 | if (SCpnt->use_sg) |
| 1706 | pci_dma_sync_sg_for_cpu(ha->pdev, SCpnt->request_buffer, |
| 1707 | SCpnt->use_sg, pci_dir); |
| 1708 | |
| 1709 | if (!DEV2H(cpp->data_len)) |
| 1710 | pci_dir = PCI_DMA_BIDIRECTIONAL; |
| 1711 | |
| 1712 | if (DEV2H(cpp->data_address)) |
| 1713 | pci_dma_sync_single_for_cpu(ha->pdev, |
| 1714 | DEV2H(cpp->data_address), |
| 1715 | DEV2H(cpp->data_len), pci_dir); |
| 1716 | } |
| 1717 | |
| 1718 | static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha) |
| 1719 | { |
| 1720 | unsigned int k; |
| 1721 | |
| 1722 | static const unsigned char data_out_cmds[] = { |
| 1723 | 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e, |
| 1724 | 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40, |
| 1725 | 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d |
| 1726 | }; |
| 1727 | |
| 1728 | static const unsigned char data_none_cmds[] = { |
| 1729 | 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e, |
| 1730 | 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47, |
| 1731 | 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00 |
| 1732 | }; |
| 1733 | |
| 1734 | struct mscp *cpp; |
| 1735 | struct scsi_cmnd *SCpnt; |
| 1736 | |
| 1737 | cpp = &ha->cp[i]; |
| 1738 | SCpnt = cpp->SCpnt; |
| 1739 | |
| 1740 | if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) { |
| 1741 | cpp->din = 1; |
| 1742 | cpp->dout = 0; |
| 1743 | return; |
| 1744 | } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) { |
| 1745 | cpp->din = 0; |
| 1746 | cpp->dout = 1; |
| 1747 | return; |
| 1748 | } else if (SCpnt->sc_data_direction == DMA_NONE) { |
| 1749 | cpp->din = 0; |
| 1750 | cpp->dout = 0; |
| 1751 | return; |
| 1752 | } |
| 1753 | |
| 1754 | if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL) |
| 1755 | panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n", |
| 1756 | ha->board_name); |
| 1757 | |
| 1758 | for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++) |
| 1759 | if (SCpnt->cmnd[0] == data_out_cmds[k]) { |
| 1760 | cpp->dout = 1; |
| 1761 | break; |
| 1762 | } |
| 1763 | |
| 1764 | if ((cpp->din = !cpp->dout)) |
| 1765 | for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++) |
| 1766 | if (SCpnt->cmnd[0] == data_none_cmds[k]) { |
| 1767 | cpp->din = 0; |
| 1768 | break; |
| 1769 | } |
| 1770 | |
| 1771 | } |
| 1772 | |
| 1773 | static int eata2x_queuecommand(struct scsi_cmnd *SCpnt, |
| 1774 | void (*done) (struct scsi_cmnd *)) |
| 1775 | { |
| 1776 | struct Scsi_Host *shost = SCpnt->device->host; |
| 1777 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 1778 | unsigned int i, k; |
| 1779 | struct mscp *cpp; |
| 1780 | |
| 1781 | if (SCpnt->host_scribble) |
| 1782 | panic("%s: qcomm, pid %ld, SCpnt %p already active.\n", |
| 1783 | ha->board_name, SCpnt->pid, SCpnt); |
| 1784 | |
| 1785 | /* i is the mailbox number, look for the first free mailbox |
| 1786 | starting from last_cp_used */ |
| 1787 | i = ha->last_cp_used + 1; |
| 1788 | |
| 1789 | for (k = 0; k < shost->can_queue; k++, i++) { |
| 1790 | if (i >= shost->can_queue) |
| 1791 | i = 0; |
| 1792 | if (ha->cp_stat[i] == FREE) { |
| 1793 | ha->last_cp_used = i; |
| 1794 | break; |
| 1795 | } |
| 1796 | } |
| 1797 | |
| 1798 | if (k == shost->can_queue) { |
| 1799 | printk("%s: qcomm, no free mailbox.\n", ha->board_name); |
| 1800 | return 1; |
| 1801 | } |
| 1802 | |
| 1803 | /* Set pointer to control packet structure */ |
| 1804 | cpp = &ha->cp[i]; |
| 1805 | |
| 1806 | memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE); |
| 1807 | |
| 1808 | /* Set pointer to status packet structure, Big Endian format */ |
| 1809 | cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr); |
| 1810 | |
| 1811 | SCpnt->scsi_done = done; |
| 1812 | cpp->cpp_index = i; |
| 1813 | SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index; |
| 1814 | |
| 1815 | if (do_trace) |
| 1816 | printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.\n", |
| 1817 | ha->board_name, i, SCpnt->device->channel, SCpnt->device->id, |
| 1818 | SCpnt->device->lun, SCpnt->pid); |
| 1819 | |
| 1820 | cpp->reqsen = 1; |
| 1821 | cpp->dispri = 1; |
| 1822 | #if 0 |
| 1823 | if (SCpnt->device->type == TYPE_TAPE) |
| 1824 | cpp->hbaci = 1; |
| 1825 | #endif |
| 1826 | cpp->one = 1; |
| 1827 | cpp->channel = SCpnt->device->channel; |
| 1828 | cpp->target = SCpnt->device->id; |
| 1829 | cpp->lun = SCpnt->device->lun; |
| 1830 | cpp->SCpnt = SCpnt; |
| 1831 | memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len); |
| 1832 | |
| 1833 | /* Use data transfer direction SCpnt->sc_data_direction */ |
| 1834 | scsi_to_dev_dir(i, ha); |
| 1835 | |
| 1836 | /* Map DMA buffers and SG list */ |
| 1837 | map_dma(i, ha); |
| 1838 | |
| 1839 | if (linked_comm && SCpnt->device->queue_depth > 2 |
| 1840 | && TLDEV(SCpnt->device->type)) { |
| 1841 | ha->cp_stat[i] = READY; |
| 1842 | flush_dev(SCpnt->device, SCpnt->request->sector, ha, 0); |
| 1843 | return 0; |
| 1844 | } |
| 1845 | |
| 1846 | /* Send control packet to the board */ |
| 1847 | if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { |
| 1848 | unmap_dma(i, ha); |
| 1849 | SCpnt->host_scribble = NULL; |
| 1850 | printk("%s: qcomm, target %d.%d:%d, pid %ld, adapter busy.\n", |
| 1851 | ha->board_name, SCpnt->device->channel, SCpnt->device->id, |
| 1852 | SCpnt->device->lun, SCpnt->pid); |
| 1853 | return 1; |
| 1854 | } |
| 1855 | |
| 1856 | ha->cp_stat[i] = IN_USE; |
| 1857 | return 0; |
| 1858 | } |
| 1859 | |
| 1860 | static int eata2x_eh_abort(struct scsi_cmnd *SCarg) |
| 1861 | { |
| 1862 | struct Scsi_Host *shost = SCarg->device->host; |
| 1863 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 1864 | unsigned int i; |
| 1865 | |
| 1866 | if (SCarg->host_scribble == NULL) { |
| 1867 | printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n", |
| 1868 | ha->board_name, SCarg->device->channel, SCarg->device->id, |
| 1869 | SCarg->device->lun, SCarg->pid); |
| 1870 | return SUCCESS; |
| 1871 | } |
| 1872 | |
| 1873 | i = *(unsigned int *)SCarg->host_scribble; |
| 1874 | printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n", |
| 1875 | ha->board_name, i, SCarg->device->channel, SCarg->device->id, |
| 1876 | SCarg->device->lun, SCarg->pid); |
| 1877 | |
| 1878 | if (i >= shost->can_queue) |
| 1879 | panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name); |
| 1880 | |
| 1881 | if (wait_on_busy(shost->io_port, MAXLOOP)) { |
| 1882 | printk("%s: abort, timeout error.\n", ha->board_name); |
| 1883 | return FAILED; |
| 1884 | } |
| 1885 | |
| 1886 | if (ha->cp_stat[i] == FREE) { |
| 1887 | printk("%s: abort, mbox %d is free.\n", ha->board_name, i); |
| 1888 | return SUCCESS; |
| 1889 | } |
| 1890 | |
| 1891 | if (ha->cp_stat[i] == IN_USE) { |
| 1892 | printk("%s: abort, mbox %d is in use.\n", ha->board_name, i); |
| 1893 | |
| 1894 | if (SCarg != ha->cp[i].SCpnt) |
| 1895 | panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", |
| 1896 | ha->board_name, i, SCarg, ha->cp[i].SCpnt); |
| 1897 | |
| 1898 | if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED) |
| 1899 | printk("%s: abort, mbox %d, interrupt pending.\n", |
| 1900 | ha->board_name, i); |
| 1901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | return FAILED; |
| 1903 | } |
| 1904 | |
| 1905 | if (ha->cp_stat[i] == IN_RESET) { |
| 1906 | printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i); |
| 1907 | return FAILED; |
| 1908 | } |
| 1909 | |
| 1910 | if (ha->cp_stat[i] == LOCKED) { |
| 1911 | printk("%s: abort, mbox %d is locked.\n", ha->board_name, i); |
| 1912 | return SUCCESS; |
| 1913 | } |
| 1914 | |
| 1915 | if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { |
| 1916 | unmap_dma(i, ha); |
| 1917 | SCarg->result = DID_ABORT << 16; |
| 1918 | SCarg->host_scribble = NULL; |
| 1919 | ha->cp_stat[i] = FREE; |
| 1920 | printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n", |
| 1921 | ha->board_name, i, SCarg->pid); |
| 1922 | SCarg->scsi_done(SCarg); |
| 1923 | return SUCCESS; |
| 1924 | } |
| 1925 | |
| 1926 | panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i); |
| 1927 | } |
| 1928 | |
| 1929 | static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg) |
| 1930 | { |
| 1931 | unsigned int i, time, k, c, limit = 0; |
| 1932 | int arg_done = 0; |
| 1933 | struct scsi_cmnd *SCpnt; |
| 1934 | struct Scsi_Host *shost = SCarg->device->host; |
| 1935 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 1936 | |
| 1937 | printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n", |
| 1938 | ha->board_name, SCarg->device->channel, SCarg->device->id, |
| 1939 | SCarg->device->lun, SCarg->pid); |
| 1940 | |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 1941 | spin_lock_irq(shost->host_lock); |
| 1942 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | if (SCarg->host_scribble == NULL) |
| 1944 | printk("%s: reset, pid %ld inactive.\n", ha->board_name, SCarg->pid); |
| 1945 | |
| 1946 | if (ha->in_reset) { |
| 1947 | printk("%s: reset, exit, already in reset.\n", ha->board_name); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 1948 | spin_unlock_irq(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | return FAILED; |
| 1950 | } |
| 1951 | |
| 1952 | if (wait_on_busy(shost->io_port, MAXLOOP)) { |
| 1953 | printk("%s: reset, exit, timeout error.\n", ha->board_name); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 1954 | spin_unlock_irq(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | return FAILED; |
| 1956 | } |
| 1957 | |
| 1958 | ha->retries = 0; |
| 1959 | |
| 1960 | for (c = 0; c <= shost->max_channel; c++) |
| 1961 | for (k = 0; k < shost->max_id; k++) { |
| 1962 | ha->target_redo[k][c] = 1; |
| 1963 | ha->target_to[k][c] = 0; |
| 1964 | } |
| 1965 | |
| 1966 | for (i = 0; i < shost->can_queue; i++) { |
| 1967 | |
| 1968 | if (ha->cp_stat[i] == FREE) |
| 1969 | continue; |
| 1970 | |
| 1971 | if (ha->cp_stat[i] == LOCKED) { |
| 1972 | ha->cp_stat[i] = FREE; |
| 1973 | printk("%s: reset, locked mbox %d forced free.\n", |
| 1974 | ha->board_name, i); |
| 1975 | continue; |
| 1976 | } |
| 1977 | |
| 1978 | if (!(SCpnt = ha->cp[i].SCpnt)) |
| 1979 | panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i); |
| 1980 | |
| 1981 | if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { |
| 1982 | ha->cp_stat[i] = ABORTING; |
| 1983 | printk("%s: reset, mbox %d aborting, pid %ld.\n", |
| 1984 | ha->board_name, i, SCpnt->pid); |
| 1985 | } |
| 1986 | |
| 1987 | else { |
| 1988 | ha->cp_stat[i] = IN_RESET; |
| 1989 | printk("%s: reset, mbox %d in reset, pid %ld.\n", |
| 1990 | ha->board_name, i, SCpnt->pid); |
| 1991 | } |
| 1992 | |
| 1993 | if (SCpnt->host_scribble == NULL) |
| 1994 | panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i); |
| 1995 | |
| 1996 | if (*(unsigned int *)SCpnt->host_scribble != i) |
| 1997 | panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i); |
| 1998 | |
| 1999 | if (SCpnt->scsi_done == NULL) |
| 2000 | panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", |
| 2001 | ha->board_name, i); |
| 2002 | |
| 2003 | if (SCpnt == SCarg) |
| 2004 | arg_done = 1; |
| 2005 | } |
| 2006 | |
| 2007 | if (do_dma(shost->io_port, 0, RESET_PIO)) { |
| 2008 | printk("%s: reset, cannot reset, timeout error.\n", ha->board_name); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2009 | spin_unlock_irq(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | return FAILED; |
| 2011 | } |
| 2012 | |
| 2013 | printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name); |
| 2014 | |
| 2015 | #if defined(DEBUG_RESET) |
| 2016 | do_trace = 1; |
| 2017 | #endif |
| 2018 | |
| 2019 | ha->in_reset = 1; |
| 2020 | |
| 2021 | spin_unlock_irq(shost->host_lock); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2022 | |
| 2023 | /* FIXME: use a sleep instead */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | time = jiffies; |
| 2025 | while ((jiffies - time) < (10 * HZ) && limit++ < 200000) |
| 2026 | udelay(100L); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2027 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | spin_lock_irq(shost->host_lock); |
| 2029 | |
| 2030 | printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit); |
| 2031 | |
| 2032 | for (i = 0; i < shost->can_queue; i++) { |
| 2033 | |
| 2034 | if (ha->cp_stat[i] == IN_RESET) { |
| 2035 | SCpnt = ha->cp[i].SCpnt; |
| 2036 | unmap_dma(i, ha); |
| 2037 | SCpnt->result = DID_RESET << 16; |
| 2038 | SCpnt->host_scribble = NULL; |
| 2039 | |
| 2040 | /* This mailbox is still waiting for its interrupt */ |
| 2041 | ha->cp_stat[i] = LOCKED; |
| 2042 | |
| 2043 | printk |
| 2044 | ("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n", |
| 2045 | ha->board_name, i, SCpnt->pid); |
| 2046 | } |
| 2047 | |
| 2048 | else if (ha->cp_stat[i] == ABORTING) { |
| 2049 | SCpnt = ha->cp[i].SCpnt; |
| 2050 | unmap_dma(i, ha); |
| 2051 | SCpnt->result = DID_RESET << 16; |
| 2052 | SCpnt->host_scribble = NULL; |
| 2053 | |
| 2054 | /* This mailbox was never queued to the adapter */ |
| 2055 | ha->cp_stat[i] = FREE; |
| 2056 | |
| 2057 | printk |
| 2058 | ("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n", |
| 2059 | ha->board_name, i, SCpnt->pid); |
| 2060 | } |
| 2061 | |
| 2062 | else |
| 2063 | /* Any other mailbox has already been set free by interrupt */ |
| 2064 | continue; |
| 2065 | |
| 2066 | SCpnt->scsi_done(SCpnt); |
| 2067 | } |
| 2068 | |
| 2069 | ha->in_reset = 0; |
| 2070 | do_trace = 0; |
| 2071 | |
| 2072 | if (arg_done) |
| 2073 | printk("%s: reset, exit, pid %ld done.\n", ha->board_name, SCarg->pid); |
| 2074 | else |
| 2075 | printk("%s: reset, exit.\n", ha->board_name); |
| 2076 | |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2077 | spin_unlock_irq(shost->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | return SUCCESS; |
| 2079 | } |
| 2080 | |
| 2081 | int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev, |
| 2082 | sector_t capacity, int *dkinfo) |
| 2083 | { |
| 2084 | unsigned int size = capacity; |
| 2085 | |
| 2086 | if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) { |
| 2087 | dkinfo[0] = 255; |
| 2088 | dkinfo[1] = 63; |
| 2089 | dkinfo[2] = size / (dkinfo[0] * dkinfo[1]); |
| 2090 | } |
| 2091 | #if defined (DEBUG_GEOMETRY) |
| 2092 | printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name, |
| 2093 | dkinfo[0], dkinfo[1], dkinfo[2]); |
| 2094 | #endif |
| 2095 | |
| 2096 | return 0; |
| 2097 | } |
| 2098 | |
| 2099 | static void sort(unsigned long sk[], unsigned int da[], unsigned int n, |
| 2100 | unsigned int rev) |
| 2101 | { |
| 2102 | unsigned int i, j, k, y; |
| 2103 | unsigned long x; |
| 2104 | |
| 2105 | for (i = 0; i < n - 1; i++) { |
| 2106 | k = i; |
| 2107 | |
| 2108 | for (j = k + 1; j < n; j++) |
| 2109 | if (rev) { |
| 2110 | if (sk[j] > sk[k]) |
| 2111 | k = j; |
| 2112 | } else { |
| 2113 | if (sk[j] < sk[k]) |
| 2114 | k = j; |
| 2115 | } |
| 2116 | |
| 2117 | if (k != i) { |
| 2118 | x = sk[k]; |
| 2119 | sk[k] = sk[i]; |
| 2120 | sk[i] = x; |
| 2121 | y = da[k]; |
| 2122 | da[k] = da[i]; |
| 2123 | da[i] = y; |
| 2124 | } |
| 2125 | } |
| 2126 | |
| 2127 | return; |
| 2128 | } |
| 2129 | |
| 2130 | static int reorder(struct hostdata *ha, unsigned long cursec, |
| 2131 | unsigned int ihdlr, unsigned int il[], unsigned int n_ready) |
| 2132 | { |
| 2133 | struct scsi_cmnd *SCpnt; |
| 2134 | struct mscp *cpp; |
| 2135 | unsigned int k, n; |
| 2136 | unsigned int rev = 0, s = 1, r = 1; |
| 2137 | unsigned int input_only = 1, overlap = 0; |
| 2138 | unsigned long sl[n_ready], pl[n_ready], ll[n_ready]; |
| 2139 | unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0; |
| 2140 | unsigned long ioseek = 0; |
| 2141 | |
| 2142 | static unsigned int flushcount = 0, batchcount = 0, sortcount = 0; |
| 2143 | static unsigned int readycount = 0, ovlcount = 0, inputcount = 0; |
| 2144 | static unsigned int readysorted = 0, revcount = 0; |
| 2145 | static unsigned long seeksorted = 0, seeknosort = 0; |
| 2146 | |
| 2147 | if (link_statistics && !(++flushcount % link_statistics)) |
| 2148 | printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d" |
| 2149 | " av %ldK as %ldK.\n", flushcount, batchcount, |
| 2150 | inputcount, ovlcount, readycount, readysorted, sortcount, |
| 2151 | revcount, seeknosort / (readycount + 1), |
| 2152 | seeksorted / (readycount + 1)); |
| 2153 | |
| 2154 | if (n_ready <= 1) |
| 2155 | return 0; |
| 2156 | |
| 2157 | for (n = 0; n < n_ready; n++) { |
| 2158 | k = il[n]; |
| 2159 | cpp = &ha->cp[k]; |
| 2160 | SCpnt = cpp->SCpnt; |
| 2161 | |
| 2162 | if (!cpp->din) |
| 2163 | input_only = 0; |
| 2164 | |
| 2165 | if (SCpnt->request->sector < minsec) |
| 2166 | minsec = SCpnt->request->sector; |
| 2167 | if (SCpnt->request->sector > maxsec) |
| 2168 | maxsec = SCpnt->request->sector; |
| 2169 | |
| 2170 | sl[n] = SCpnt->request->sector; |
| 2171 | ioseek += SCpnt->request->nr_sectors; |
| 2172 | |
| 2173 | if (!n) |
| 2174 | continue; |
| 2175 | |
| 2176 | if (sl[n] < sl[n - 1]) |
| 2177 | s = 0; |
| 2178 | if (sl[n] > sl[n - 1]) |
| 2179 | r = 0; |
| 2180 | |
| 2181 | if (link_statistics) { |
| 2182 | if (sl[n] > sl[n - 1]) |
| 2183 | seek += sl[n] - sl[n - 1]; |
| 2184 | else |
| 2185 | seek += sl[n - 1] - sl[n]; |
| 2186 | } |
| 2187 | |
| 2188 | } |
| 2189 | |
| 2190 | if (link_statistics) { |
| 2191 | if (cursec > sl[0]) |
| 2192 | seek += cursec - sl[0]; |
| 2193 | else |
| 2194 | seek += sl[0] - cursec; |
| 2195 | } |
| 2196 | |
| 2197 | if (cursec > ((maxsec + minsec) / 2)) |
| 2198 | rev = 1; |
| 2199 | |
| 2200 | if (ioseek > ((maxsec - minsec) / 2)) |
| 2201 | rev = 0; |
| 2202 | |
| 2203 | if (!((rev && r) || (!rev && s))) |
| 2204 | sort(sl, il, n_ready, rev); |
| 2205 | |
| 2206 | if (!input_only) |
| 2207 | for (n = 0; n < n_ready; n++) { |
| 2208 | k = il[n]; |
| 2209 | cpp = &ha->cp[k]; |
| 2210 | SCpnt = cpp->SCpnt; |
| 2211 | ll[n] = SCpnt->request->nr_sectors; |
| 2212 | pl[n] = SCpnt->pid; |
| 2213 | |
| 2214 | if (!n) |
| 2215 | continue; |
| 2216 | |
| 2217 | if ((sl[n] == sl[n - 1]) |
| 2218 | || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n])) |
| 2219 | || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) |
| 2220 | overlap = 1; |
| 2221 | } |
| 2222 | |
| 2223 | if (overlap) |
| 2224 | sort(pl, il, n_ready, 0); |
| 2225 | |
| 2226 | if (link_statistics) { |
| 2227 | if (cursec > sl[0]) |
| 2228 | iseek = cursec - sl[0]; |
| 2229 | else |
| 2230 | iseek = sl[0] - cursec; |
| 2231 | batchcount++; |
| 2232 | readycount += n_ready; |
| 2233 | seeknosort += seek / 1024; |
| 2234 | if (input_only) |
| 2235 | inputcount++; |
| 2236 | if (overlap) { |
| 2237 | ovlcount++; |
| 2238 | seeksorted += iseek / 1024; |
| 2239 | } else |
| 2240 | seeksorted += (iseek + maxsec - minsec) / 1024; |
| 2241 | if (rev && !r) { |
| 2242 | revcount++; |
| 2243 | readysorted += n_ready; |
| 2244 | } |
| 2245 | if (!rev && !s) { |
| 2246 | sortcount++; |
| 2247 | readysorted += n_ready; |
| 2248 | } |
| 2249 | } |
| 2250 | #if defined(DEBUG_LINKED_COMMANDS) |
| 2251 | if (link_statistics && (overlap || !(flushcount % link_statistics))) |
| 2252 | for (n = 0; n < n_ready; n++) { |
| 2253 | k = il[n]; |
| 2254 | cpp = &ha->cp[k]; |
| 2255 | SCpnt = cpp->SCpnt; |
| 2256 | printk |
| 2257 | ("%s %d.%d:%d pid %ld mb %d fc %d nr %d sec %ld ns %ld" |
| 2258 | " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n", |
| 2259 | (ihdlr ? "ihdlr" : "qcomm"), |
| 2260 | SCpnt->device->channel, SCpnt->device->id, |
| 2261 | SCpnt->device->lun, SCpnt->pid, k, flushcount, |
| 2262 | n_ready, SCpnt->request->sector, |
| 2263 | SCpnt->request->nr_sectors, cursec, YESNO(s), |
| 2264 | YESNO(r), YESNO(rev), YESNO(input_only), |
| 2265 | YESNO(overlap), cpp->din); |
| 2266 | } |
| 2267 | #endif |
| 2268 | return overlap; |
| 2269 | } |
| 2270 | |
| 2271 | static void flush_dev(struct scsi_device *dev, unsigned long cursec, |
| 2272 | struct hostdata *ha, unsigned int ihdlr) |
| 2273 | { |
| 2274 | struct scsi_cmnd *SCpnt; |
| 2275 | struct mscp *cpp; |
| 2276 | unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES]; |
| 2277 | |
| 2278 | for (k = 0; k < dev->host->can_queue; k++) { |
| 2279 | |
| 2280 | if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE) |
| 2281 | continue; |
| 2282 | |
| 2283 | cpp = &ha->cp[k]; |
| 2284 | SCpnt = cpp->SCpnt; |
| 2285 | |
| 2286 | if (SCpnt->device != dev) |
| 2287 | continue; |
| 2288 | |
| 2289 | if (ha->cp_stat[k] == IN_USE) |
| 2290 | return; |
| 2291 | |
| 2292 | il[n_ready++] = k; |
| 2293 | } |
| 2294 | |
| 2295 | if (reorder(ha, cursec, ihdlr, il, n_ready)) |
| 2296 | n_ready = 1; |
| 2297 | |
| 2298 | for (n = 0; n < n_ready; n++) { |
| 2299 | k = il[n]; |
| 2300 | cpp = &ha->cp[k]; |
| 2301 | SCpnt = cpp->SCpnt; |
| 2302 | |
| 2303 | if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { |
| 2304 | printk |
| 2305 | ("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter" |
| 2306 | " busy, will abort.\n", ha->board_name, |
| 2307 | (ihdlr ? "ihdlr" : "qcomm"), |
| 2308 | SCpnt->device->channel, SCpnt->device->id, |
| 2309 | SCpnt->device->lun, SCpnt->pid, k); |
| 2310 | ha->cp_stat[k] = ABORTING; |
| 2311 | continue; |
| 2312 | } |
| 2313 | |
| 2314 | ha->cp_stat[k] = IN_USE; |
| 2315 | } |
| 2316 | } |
| 2317 | |
| 2318 | static irqreturn_t ihdlr(int irq, struct Scsi_Host *shost) |
| 2319 | { |
| 2320 | struct scsi_cmnd *SCpnt; |
| 2321 | unsigned int i, k, c, status, tstatus, reg; |
| 2322 | struct mssp *spp; |
| 2323 | struct mscp *cpp; |
| 2324 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 2325 | |
| 2326 | if (shost->irq != irq) |
| 2327 | panic("%s: ihdlr, irq %d, shost->irq %d.\n", ha->board_name, irq, |
| 2328 | shost->irq); |
| 2329 | |
| 2330 | /* Check if this board need to be serviced */ |
| 2331 | if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)) |
| 2332 | goto none; |
| 2333 | |
| 2334 | ha->iocount++; |
| 2335 | |
| 2336 | if (do_trace) |
| 2337 | printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq, |
| 2338 | ha->iocount); |
| 2339 | |
| 2340 | /* Check if this board is still busy */ |
| 2341 | if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) { |
| 2342 | reg = inb(shost->io_port + REG_STATUS); |
| 2343 | printk |
| 2344 | ("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n", |
| 2345 | ha->board_name, irq, reg, ha->iocount); |
| 2346 | goto none; |
| 2347 | } |
| 2348 | |
| 2349 | spp = &ha->sp; |
| 2350 | |
| 2351 | /* Make a local copy just before clearing the interrupt indication */ |
| 2352 | memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp)); |
| 2353 | |
| 2354 | /* Clear the completion flag and cp pointer on the dynamic copy of sp */ |
| 2355 | memset(ha->sp_cpu_addr, 0, sizeof(struct mssp)); |
| 2356 | |
| 2357 | /* Read the status register to clear the interrupt indication */ |
| 2358 | reg = inb(shost->io_port + REG_STATUS); |
| 2359 | |
| 2360 | #if defined (DEBUG_INTERRUPT) |
| 2361 | { |
| 2362 | unsigned char *bytesp; |
| 2363 | int cnt; |
| 2364 | bytesp = (unsigned char *)spp; |
| 2365 | if (ha->iocount < 200) { |
| 2366 | printk("sp[] ="); |
| 2367 | for (cnt = 0; cnt < 15; cnt++) |
| 2368 | printk(" 0x%x", bytesp[cnt]); |
| 2369 | printk("\n"); |
| 2370 | } |
| 2371 | } |
| 2372 | #endif |
| 2373 | |
| 2374 | /* Reject any sp with supspect data */ |
| 2375 | if (spp->eoc == 0 && ha->iocount > 1) |
| 2376 | printk |
| 2377 | ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n", |
| 2378 | ha->board_name, irq, reg, ha->iocount); |
| 2379 | if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue) |
| 2380 | printk |
| 2381 | ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n", |
| 2382 | ha->board_name, spp->cpp_index, irq, reg, ha->iocount); |
| 2383 | if (spp->eoc == 0 || spp->cpp_index < 0 |
| 2384 | || spp->cpp_index >= shost->can_queue) |
| 2385 | goto handled; |
| 2386 | |
| 2387 | /* Find the mailbox to be serviced on this board */ |
| 2388 | i = spp->cpp_index; |
| 2389 | |
| 2390 | cpp = &(ha->cp[i]); |
| 2391 | |
| 2392 | #if defined(DEBUG_GENERATE_ABORTS) |
| 2393 | if ((ha->iocount > 500) && ((ha->iocount % 500) < 3)) |
| 2394 | goto handled; |
| 2395 | #endif |
| 2396 | |
| 2397 | if (ha->cp_stat[i] == IGNORE) { |
| 2398 | ha->cp_stat[i] = FREE; |
| 2399 | goto handled; |
| 2400 | } else if (ha->cp_stat[i] == LOCKED) { |
| 2401 | ha->cp_stat[i] = FREE; |
| 2402 | printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i, |
| 2403 | ha->iocount); |
| 2404 | goto handled; |
| 2405 | } else if (ha->cp_stat[i] == FREE) { |
| 2406 | printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i, |
| 2407 | ha->iocount); |
| 2408 | goto handled; |
| 2409 | } else if (ha->cp_stat[i] == IN_RESET) |
| 2410 | printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i); |
| 2411 | else if (ha->cp_stat[i] != IN_USE) |
| 2412 | panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n", |
| 2413 | ha->board_name, i, ha->cp_stat[i]); |
| 2414 | |
| 2415 | ha->cp_stat[i] = FREE; |
| 2416 | SCpnt = cpp->SCpnt; |
| 2417 | |
| 2418 | if (SCpnt == NULL) |
| 2419 | panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i); |
| 2420 | |
| 2421 | if (SCpnt->host_scribble == NULL) |
| 2422 | panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", ha->board_name, |
| 2423 | i, SCpnt->pid, SCpnt); |
| 2424 | |
| 2425 | if (*(unsigned int *)SCpnt->host_scribble != i) |
| 2426 | panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n", |
| 2427 | ha->board_name, i, SCpnt->pid, |
| 2428 | *(unsigned int *)SCpnt->host_scribble); |
| 2429 | |
| 2430 | sync_dma(i, ha); |
| 2431 | |
| 2432 | if (linked_comm && SCpnt->device->queue_depth > 2 |
| 2433 | && TLDEV(SCpnt->device->type)) |
| 2434 | flush_dev(SCpnt->device, SCpnt->request->sector, ha, 1); |
| 2435 | |
| 2436 | tstatus = status_byte(spp->target_status); |
| 2437 | |
| 2438 | #if defined(DEBUG_GENERATE_ERRORS) |
| 2439 | if ((ha->iocount > 500) && ((ha->iocount % 200) < 2)) |
| 2440 | spp->adapter_status = 0x01; |
| 2441 | #endif |
| 2442 | |
| 2443 | switch (spp->adapter_status) { |
| 2444 | case ASOK: /* status OK */ |
| 2445 | |
| 2446 | /* Forces a reset if a disk drive keeps returning BUSY */ |
| 2447 | if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE) |
| 2448 | status = DID_ERROR << 16; |
| 2449 | |
| 2450 | /* If there was a bus reset, redo operation on each target */ |
| 2451 | else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK |
| 2452 | && ha->target_redo[SCpnt->device->id][SCpnt-> |
| 2453 | device-> |
| 2454 | channel]) |
| 2455 | status = DID_BUS_BUSY << 16; |
| 2456 | |
| 2457 | /* Works around a flaw in scsi.c */ |
| 2458 | else if (tstatus == CHECK_CONDITION |
| 2459 | && SCpnt->device->type == TYPE_DISK |
| 2460 | && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR) |
| 2461 | status = DID_BUS_BUSY << 16; |
| 2462 | |
| 2463 | else |
| 2464 | status = DID_OK << 16; |
| 2465 | |
| 2466 | if (tstatus == GOOD) |
| 2467 | ha->target_redo[SCpnt->device->id][SCpnt->device-> |
| 2468 | channel] = 0; |
| 2469 | |
| 2470 | if (spp->target_status && SCpnt->device->type == TYPE_DISK && |
| 2471 | (!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 && |
| 2472 | (SCpnt->sense_buffer[2] & 0xf) == NOT_READY))) |
| 2473 | printk("%s: ihdlr, target %d.%d:%d, pid %ld, " |
| 2474 | "target_status 0x%x, sense key 0x%x.\n", |
| 2475 | ha->board_name, |
| 2476 | SCpnt->device->channel, SCpnt->device->id, |
| 2477 | SCpnt->device->lun, SCpnt->pid, |
| 2478 | spp->target_status, SCpnt->sense_buffer[2]); |
| 2479 | |
| 2480 | ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0; |
| 2481 | |
| 2482 | if (ha->last_retried_pid == SCpnt->pid) |
| 2483 | ha->retries = 0; |
| 2484 | |
| 2485 | break; |
| 2486 | case ASST: /* Selection Time Out */ |
| 2487 | case 0x02: /* Command Time Out */ |
| 2488 | |
| 2489 | if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1) |
| 2490 | status = DID_ERROR << 16; |
| 2491 | else { |
| 2492 | status = DID_TIME_OUT << 16; |
| 2493 | ha->target_to[SCpnt->device->id][SCpnt->device-> |
| 2494 | channel]++; |
| 2495 | } |
| 2496 | |
| 2497 | break; |
| 2498 | |
| 2499 | /* Perform a limited number of internal retries */ |
| 2500 | case 0x03: /* SCSI Bus Reset Received */ |
| 2501 | case 0x04: /* Initial Controller Power-up */ |
| 2502 | |
| 2503 | for (c = 0; c <= shost->max_channel; c++) |
| 2504 | for (k = 0; k < shost->max_id; k++) |
| 2505 | ha->target_redo[k][c] = 1; |
| 2506 | |
| 2507 | if (SCpnt->device->type != TYPE_TAPE |
| 2508 | && ha->retries < MAX_INTERNAL_RETRIES) { |
| 2509 | |
| 2510 | #if defined(DID_SOFT_ERROR) |
| 2511 | status = DID_SOFT_ERROR << 16; |
| 2512 | #else |
| 2513 | status = DID_BUS_BUSY << 16; |
| 2514 | #endif |
| 2515 | |
| 2516 | ha->retries++; |
| 2517 | ha->last_retried_pid = SCpnt->pid; |
| 2518 | } else |
| 2519 | status = DID_ERROR << 16; |
| 2520 | |
| 2521 | break; |
| 2522 | case 0x05: /* Unexpected Bus Phase */ |
| 2523 | case 0x06: /* Unexpected Bus Free */ |
| 2524 | case 0x07: /* Bus Parity Error */ |
| 2525 | case 0x08: /* SCSI Hung */ |
| 2526 | case 0x09: /* Unexpected Message Reject */ |
| 2527 | case 0x0a: /* SCSI Bus Reset Stuck */ |
| 2528 | case 0x0b: /* Auto Request-Sense Failed */ |
| 2529 | case 0x0c: /* Controller Ram Parity Error */ |
| 2530 | default: |
| 2531 | status = DID_ERROR << 16; |
| 2532 | break; |
| 2533 | } |
| 2534 | |
| 2535 | SCpnt->result = status | spp->target_status; |
| 2536 | |
| 2537 | #if defined(DEBUG_INTERRUPT) |
| 2538 | if (SCpnt->result || do_trace) |
| 2539 | #else |
| 2540 | if ((spp->adapter_status != ASOK && ha->iocount > 1000) || |
| 2541 | (spp->adapter_status != ASOK && |
| 2542 | spp->adapter_status != ASST && ha->iocount <= 1000) || |
| 2543 | do_trace || msg_byte(spp->target_status)) |
| 2544 | #endif |
| 2545 | printk("%s: ihdlr, mbox %2d, err 0x%x:%x," |
| 2546 | " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n", |
| 2547 | ha->board_name, i, spp->adapter_status, spp->target_status, |
| 2548 | SCpnt->device->channel, SCpnt->device->id, |
| 2549 | SCpnt->device->lun, SCpnt->pid, reg, ha->iocount); |
| 2550 | |
| 2551 | unmap_dma(i, ha); |
| 2552 | |
| 2553 | /* Set the command state to inactive */ |
| 2554 | SCpnt->host_scribble = NULL; |
| 2555 | |
| 2556 | SCpnt->scsi_done(SCpnt); |
| 2557 | |
| 2558 | if (do_trace) |
| 2559 | printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name, |
| 2560 | irq, ha->iocount); |
| 2561 | |
| 2562 | handled: |
| 2563 | return IRQ_HANDLED; |
| 2564 | none: |
| 2565 | return IRQ_NONE; |
| 2566 | } |
| 2567 | |
| 2568 | static irqreturn_t do_interrupt_handler(int irq, void *shap, |
| 2569 | struct pt_regs *regs) |
| 2570 | { |
| 2571 | struct Scsi_Host *shost; |
| 2572 | unsigned int j; |
| 2573 | unsigned long spin_flags; |
| 2574 | irqreturn_t ret; |
| 2575 | |
| 2576 | /* Check if the interrupt must be processed by this handler */ |
| 2577 | if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) |
| 2578 | return IRQ_NONE; |
| 2579 | shost = sh[j]; |
| 2580 | |
| 2581 | spin_lock_irqsave(shost->host_lock, spin_flags); |
| 2582 | ret = ihdlr(irq, shost); |
| 2583 | spin_unlock_irqrestore(shost->host_lock, spin_flags); |
| 2584 | return ret; |
| 2585 | } |
| 2586 | |
| 2587 | static int eata2x_release(struct Scsi_Host *shost) |
| 2588 | { |
| 2589 | struct hostdata *ha = (struct hostdata *)shost->hostdata; |
| 2590 | unsigned int i; |
| 2591 | |
| 2592 | for (i = 0; i < shost->can_queue; i++) |
| 2593 | if ((&ha->cp[i])->sglist) |
| 2594 | kfree((&ha->cp[i])->sglist); |
| 2595 | |
| 2596 | for (i = 0; i < shost->can_queue; i++) |
| 2597 | pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr, |
| 2598 | sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL); |
| 2599 | |
| 2600 | if (ha->sp_cpu_addr) |
| 2601 | pci_free_consistent(ha->pdev, sizeof(struct mssp), |
| 2602 | ha->sp_cpu_addr, ha->sp_dma_addr); |
| 2603 | |
| 2604 | free_irq(shost->irq, &sha[ha->board_number]); |
| 2605 | |
| 2606 | if (shost->dma_channel != NO_DMA) |
| 2607 | free_dma(shost->dma_channel); |
| 2608 | |
| 2609 | release_region(shost->io_port, shost->n_io_port); |
| 2610 | scsi_unregister(shost); |
| 2611 | return 0; |
| 2612 | } |
| 2613 | |
| 2614 | #include "scsi_module.c" |
| 2615 | |
| 2616 | #ifndef MODULE |
| 2617 | __setup("eata=", option_setup); |
| 2618 | #endif /* end MODULE */ |