2 * eata.c - Low-level driver for EATA/DMA SCSI host adapters.
4 * 03 Jun 2003 Rev. 8.10 for linux-2.5.70
5 * + Update for new IRQ API.
6 * + Use "goto" when appropriate.
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.
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]
24 * A valid example using the new parameter format is:
25 * modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n"
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
31 * 12 Feb 2003 Rev. 8.04 for linux 2.5.60
32 * + Release irq before calling scsi_register.
34 * 12 Nov 2002 Rev. 8.02 for linux 2.5.47
35 * + Release driver_lock before calling scsi_register.
37 * 11 Nov 2002 Rev. 8.01 for linux 2.5.47
38 * + Fixed bios_param and scsicam_bios_param calling parameters.
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
48 * + The tagged_comm module parameter has been removed, use tag_mode
49 * instead, equivalent to the "tm:" boot option.
51 * 10 Oct 2002 Rev. 7.70 for linux 2.5.42
52 * + Foreport from revision 6.70.
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:
60 * Boot option Parameter name Default according to
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
66 * The default action is to perform probing if the corrisponding
67 * bus is configured and to skip probing otherwise.
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.
73 * 21 Feb 2002 Rev. 6.52 for linux 2.4.18
74 * + Backport from rev. 7.22 (use io_request_lock).
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.
83 * 01 Jan 2002 Rev. 7.20 for linux 2.5.1
84 * + Use the dynamic DMA mapping API.
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.
90 * 11 Dec 2001 Rev. 7.00 for linux 2.5.1
91 * + Use host->host_lock instead of io_request_lock.
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)
97 * 30 Jan 2001 Rev. 6.04 for linux 2.4.1
98 * + Call pci_resource_start after pci_enable_device.
100 * 25 Jan 2001 Rev. 6.03 for linux 2.4.0
101 * + "check_region" call replaced by "request_region".
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
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
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"'
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).
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.
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.
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.
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.
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
163 * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
164 * Reworked interrupt handler.
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.
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).
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.
179 * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
180 * io_port is now unsigned long.
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.
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.
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
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.
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.
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.
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.
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.
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.
239 * 27 Sep 1996 rev. 2.12 for linux 2.1.0
240 * Portability cleanups (virtual/bus addressing, little/big endian
243 * 09 Jul 1996 rev. 2.11 for linux 2.0.4
244 * Number of internal retries is now limited.
246 * 16 Apr 1996 rev. 2.10 for linux 1.3.90
247 * New argument "reset_flags" to the reset routine.
249 * 6 Jul 1995 rev. 2.01 for linux 1.3.7
250 * Update required by the new /proc/scsi support.
252 * 11 Mar 1995 rev. 2.00 for linux 1.2.0
253 * Fixed a bug which prevented media change detection for removable
256 * 23 Feb 1995 rev. 1.18 for linux 1.1.94
257 * Added a check for scsi_register returning NULL.
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).
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.
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.
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.
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.
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
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.
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.
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.
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).
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.
309 * This driver is based on the CAM (Common Access Method Committee)
310 * EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol.
312 * Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com)
314 * Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it
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
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:
330 * PM2011B/9X - Entry Level ISA
331 * PM2021A/9X - High Performance ISA
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
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.
346 * The DPT PM2001 provides only the EATA/PIO interface and hence is not
347 * supported by this driver.
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).
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.
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.
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
372 * If you configure multiple boards on the same IRQ, the interrupt must
373 * be _level_ triggered (not _edge_ triggered).
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.
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.
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.
389 * The sequence of detection probes is:
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.
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.
403 * After the optional list of detection probes, other possible command line
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).
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".
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):
424 * modprobe eata io_port=0x7410,0x230 linked_comm=1 \
425 * max_queue_depth=4 ext_tran=0 tag_mode=2 \
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
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....
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:
468 * disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546
470 * where the above geometry should be replaced with the one reported at
471 * power up by the DPT controller.
472 * ----------------------------------------------------------------------------
474 * The boards are named EATA0, EATA1,... according to the detection order.
476 * In order to support multiple ISA boards in a reliable way,
477 * the driver sets host->wish_block = 1 for all ISA boards.
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>
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>
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 *,
513 static int eata2x_slave_configure(struct scsi_device *);
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,
521 .eh_host_reset_handler = eata2x_eh_host_reset,
522 .bios_param = eata2x_bios_param,
523 .slave_configure = eata2x_slave_configure,
525 .unchecked_isa_dma = 1,
526 .use_clustering = ENABLE_CLUSTERING
529 #if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
530 #error "Adjust your <asm/byteorder.h> defines"
533 /* Subversion values */
539 #undef DEBUG_LINKED_COMMANDS
541 #undef DEBUG_PCI_DETECT
542 #undef DEBUG_INTERRUPT
544 #undef DEBUG_GENERATE_ERRORS
545 #undef DEBUG_GENERATE_ABORTS
546 #undef DEBUG_GEOMETRY
552 #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
553 #define MAX_CHANNEL 4
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)
563 #define SKIP ULONG_MAX
572 #define MAXLOOP 10000
573 #define TAG_DISABLED 0
575 #define TAG_ORDERED 2
579 #define REG_AUX_STATUS 8
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
607 #define YESNO(a) ((a) ? 'y' : 'n')
608 #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
610 /* "EATA", in Big Endian format */
611 #define EATA_SIG_BE 0x45415441
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
618 /* Board info structure */
620 u_int32_t data_len; /* Number of valid bytes after this field */
621 u_int32_t sign; /* ASCII "EATA" signature */
623 #if defined(__BIG_ENDIAN_BITFIELD)
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 */
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 */
653 ushort scatt_size; /* Max number of entries in scatter/gather table */
655 #if defined(__BIG_ENDIAN_BITFIELD)
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 */
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 */
687 unchar max_id : 5, /* Max SCSI target ID number */
688 max_chan : 3; /* Max SCSI channel number on this board */
690 /* Structure extension defined in EATA 2.0C */
691 unchar max_lun; /* Max SCSI LUN number */
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 */
700 unchar raidnum; /* Uniquely identifies this HBA in a system */
706 /* Board config structure */
708 ushort len; /* Number of bytes following this field */
710 #if defined(__BIG_ENDIAN_BITFIELD)
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 */
726 /* Returned status packet structure */
728 #if defined(__BIG_ENDIAN_BITFIELD)
732 unchar adapter_status : 7, /* State related to current command */
733 eoc : 1; /* End Of Command (1 = command completed) */
735 unchar target_status; /* SCSI status received after data transfer */
737 u_int32_t inv_res_len; /* Number of bytes not transferred */
738 u_int32_t cpp_index; /* Index of address set in cp */
743 unsigned int address; /* Segment Address */
744 unsigned int num_bytes; /* Segment Length */
747 /* MailBox SCSI Command Packet */
749 #if defined(__BIG_ENDIAN_BITFIELD)
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 */
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 */
783 unchar fwnest : 1, /* Send command to a component of an Array Group */
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 */
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 */
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 */
805 /* Additional fields begin here. */
806 struct scsi_cmnd *SCpnt;
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 */
814 #define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t))
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 */
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);
842 /* Initialize num_boards so that ihdlr can work while detect is in progress */
843 static unsigned int num_boards = MAX_BOARDS;
845 static unsigned long io_port[] = {
847 /* Space for MAX_INT_PARAM ports usable while loading as a module */
848 SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
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,
859 0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88,
860 0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88,
862 /* Other (MAX_ISA - 1) ports */
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)
875 /* But transfer orientation from the 16 bit data register is Little Endian */
876 #define REG2H(x) le16_to_cpu(x)
878 static irqreturn_t do_interrupt_handler(int, void *, struct pt_regs *);
879 static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *,
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;
887 #if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE)
888 static int tag_mode = TAG_SIMPLE;
890 static int tag_mode = TAG_DISABLED;
893 #if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS)
894 static int linked_comm = 1;
896 static int linked_comm = 0;
899 #if defined(CONFIG_SCSI_EATA_MAX_TAGS)
900 static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS;
902 static int max_queue_depth = MAX_CMD_PER_LUN;
905 #if defined(CONFIG_ISA)
906 static int isa_probe = 1;
908 static int isa_probe = 0;
911 #if defined(CONFIG_EISA)
912 static int eisa_probe = 1;
914 static int eisa_probe = 0;
917 #if defined(CONFIG_PCI)
918 static int pci_probe = 1;
920 static int pci_probe = 0;
923 #define MAX_INT_PARAM 10
924 #define MAX_BOOT_OPTIONS_SIZE 256
925 static char boot_options[MAX_BOOT_OPTIONS_SIZE];
928 #include <linux/module.h>
929 #include <linux/moduleparam.h>
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");
940 static int eata2x_slave_configure(struct scsi_device *dev)
943 char *tag_suffix, *link_suffix;
944 struct Scsi_Host *shost = dev->host;
945 struct hostdata *ha = (struct hostdata *)shost->hostdata;
947 utqd = MAX_CMD_PER_LUN;
948 tqd = max_queue_depth;
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";
958 scsi_adjust_queue_depth(dev, 0, tqd);
959 tag_suffix = ", no tags";
961 } else if (TLDEV(dev->type) && linked_comm) {
962 scsi_adjust_queue_depth(dev, 0, tqd);
963 tag_suffix = ", untagged";
965 scsi_adjust_queue_depth(dev, 0, utqd);
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";
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);
983 static int wait_on_busy(unsigned long iobase, unsigned int loop)
985 while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) {
993 static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd)
995 unsigned char *byaddr;
996 unsigned long devaddr;
998 if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP)))
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);
1010 outb(cmd, iobase + REG_CMD);
1014 static int read_pio(unsigned long iobase, ushort * start, ushort * end)
1016 unsigned int loop = MAXLOOP;
1019 for (p = start; p <= end; p++) {
1020 while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) {
1026 *p = REG2H(inw(iobase));
1032 static struct pci_dev *get_pci_dev(unsigned long port_base)
1034 #if defined(CONFIG_PCI)
1036 struct pci_dev *dev = NULL;
1038 while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
1039 addr = pci_resource_start(dev, 0);
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);
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... */
1051 if (addr + PCI_BASE_ADDRESS_0 == port_base)
1054 #endif /* end CONFIG_PCI */
1058 static void enable_pci_ports(void)
1060 #if defined(CONFIG_PCI)
1061 struct pci_dev *dev = NULL;
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);
1069 if (pci_enable_device(dev))
1071 ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n",
1072 driver_name, dev->bus->number, dev->devfn);
1075 #endif /* end CONFIG_PCI */
1078 static int port_detect(unsigned long port_base, unsigned int j,
1079 struct scsi_host_template *tpnt)
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;
1092 sprintf(name, "%s%d", driver_name, j);
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,
1102 spin_lock_irq(&driver_lock);
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,
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,
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);
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);
1137 if (info.data_len < EATA_2_0A_SIZE) {
1139 ("%s: config structure size (%d bytes) too short, detaching.\n",
1140 name, info.data_len);
1142 } else if (info.data_len == EATA_2_0A_SIZE)
1144 else if (info.data_len == EATA_2_0B_SIZE)
1149 if (protocol_rev != 'A' && info.forcaddr) {
1150 printk("%s: warning, port address has been forced.\n", name);
1154 } else if (port_base > MAX_EISA_ADDR
1155 || (protocol_rev == 'C' && info.pci)) {
1159 } else if (port_base >= MIN_EISA_ADDR
1160 || (protocol_rev == 'C' && info.eisa)) {
1163 } else if (protocol_rev == 'C' && !info.eisa && !info.pci) {
1166 } else if (port_base > MAX_ISA_ADDR) {
1175 if (!info.haaval || info.ata) {
1177 ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n",
1178 name, port_base, bus_type, info.haaval, info.ata);
1183 if (subversion == ESA)
1184 printk("%s: warning, weird %s board using DMA.\n", name,
1188 dma_channel = dma_channel_table[3 - info.drqx];
1190 if (subversion == ISA)
1191 printk("%s: warning, weird %s board not using DMA.\n",
1195 dma_channel = NO_DMA;
1199 printk("%s: warning, DMA protocol support not asserted.\n",
1204 if (subversion == ESA && !info.irq_tr)
1206 ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n",
1210 pdev = get_pci_dev(port_base);
1213 ("%s: warning, failed to get pci_dev structure.\n",
1218 if (pdev && (irq != pdev->irq)) {
1219 printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq,
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,
1233 if (subversion == ISA && request_dma(dma_channel, driver_name)) {
1234 printk("%s: unable to allocate DMA channel %u, detaching.\n",
1238 #if defined(FORCE_CONFIG)
1240 struct eata_config *cf;
1241 dma_addr_t cf_dma_addr;
1243 cf = pci_alloc_consistent(pdev, sizeof(struct eata_config),
1248 ("%s: config, pci_alloc_consistent failed, detaching.\n",
1253 /* Set board configuration */
1254 memset((char *)cf, 0, sizeof(struct eata_config));
1255 cf->len = (ushort) H2DEV16((ushort) 510);
1258 if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) {
1260 ("%s: busy timeout sending configuration, detaching.\n",
1262 pci_free_consistent(pdev, sizeof(struct eata_config),
1270 spin_unlock_irq(&driver_lock);
1271 sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata));
1272 spin_lock_irq(&driver_lock);
1274 if (shost == NULL) {
1275 printk("%s: unable to register host, detaching.\n", name);
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;
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;
1289 ha = (struct hostdata *)shost->hostdata;
1291 memset(ha, 0, sizeof(struct hostdata));
1292 ha->subversion = subversion;
1293 ha->protocol_rev = protocol_rev;
1294 ha->is_pci = is_pci;
1296 ha->board_number = j;
1298 if (ha->subversion == ESA)
1299 shost->unchecked_isa_dma = 0;
1301 unsigned long flags;
1302 shost->unchecked_isa_dma = 1;
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);
1313 strcpy(ha->board_name, name);
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;
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;
1329 if (protocol_rev != 'A') {
1330 if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL)
1331 shost->max_channel = info.max_chan;
1333 if (info.max_id > 7 && info.max_id < MAX_TARGET)
1334 shost->max_id = info.max_id + 1;
1336 if (info.large_sg && shost->sg_tablesize == MAX_SGLIST)
1337 shost->sg_tablesize = MAX_LARGE_SGLIST;
1340 if (protocol_rev == 'C') {
1341 if (info.max_lun > 7 && info.max_lun < MAX_LUN)
1342 shost->max_lun = info.max_lun + 1;
1345 if (dma_channel == NO_DMA)
1346 sprintf(dma_name, "%s", "BMST");
1348 sprintf(dma_name, "DMA %u", dma_channel);
1350 spin_unlock_irq(&driver_lock);
1352 for (i = 0; i < shost->can_queue; i++)
1353 ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev,
1355 sizeof(struct mscp),
1356 PCI_DMA_BIDIRECTIONAL);
1358 for (i = 0; i < shost->can_queue; i++) {
1359 size_t sz = shost->sg_tablesize *sizeof(struct sg_list);
1360 unsigned int gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC;
1361 ha->cp[i].sglist = kmalloc(sz, gfp_mask);
1362 if (!ha->cp[i].sglist) {
1364 ("%s: kmalloc SGlist failed, mbox %d, detaching.\n",
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);
1377 if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
1378 max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
1380 if (max_queue_depth < MAX_CMD_PER_LUN)
1381 max_queue_depth = MAX_CMD_PER_LUN;
1383 if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
1384 tag_mode = TAG_ORDERED;
1388 ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n");
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),
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);
1402 if (shost->max_id > 8 || shost->max_lun > 8)
1404 ("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n",
1405 ha->board_name, shost->max_id, shost->max_lun);
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]);
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);
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,
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);
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",
1439 if (subversion == ISA)
1440 free_dma(dma_channel);
1442 free_irq(irq, &sha[j]);
1444 spin_unlock_irq(&driver_lock);
1445 release_region(port_base, REGION_SIZE);
1450 eata2x_release(shost);
1454 static void internal_setup(char *str, int *ints)
1456 int i, argc = ints[0];
1457 char *cur = str, *pc;
1460 if (argc > MAX_INT_PARAM)
1461 argc = MAX_INT_PARAM;
1463 for (i = 0; i < argc; i++)
1464 io_port[i] = ints[i + 1];
1470 while (cur && (pc = strchr(cur, ':'))) {
1471 int val = 0, c = *++pc;
1473 if (c == 'n' || c == 'N')
1475 else if (c == 'y' || c == 'Y')
1478 val = (int)simple_strtoul(pc, NULL, 0);
1480 if (!strncmp(cur, "lc:", 3))
1482 else if (!strncmp(cur, "tm:", 3))
1484 else if (!strncmp(cur, "tc:", 3))
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))
1492 else if (!strncmp(cur, "rs:", 3))
1494 else if (!strncmp(cur, "ip:", 3))
1496 else if (!strncmp(cur, "ep:", 3))
1498 else if (!strncmp(cur, "pp:", 3))
1501 if ((cur = strchr(cur, ',')))
1508 static int option_setup(char *str)
1510 int ints[MAX_INT_PARAM];
1514 while (cur && isdigit(*cur) && i <= MAX_INT_PARAM) {
1515 ints[i++] = simple_strtoul(cur, NULL, 0);
1517 if ((cur = strchr(cur, ',')) != NULL)
1522 internal_setup(cur, ints);
1526 static void add_pci_ports(void)
1528 #if defined(CONFIG_PCI)
1529 unsigned int addr, k;
1530 struct pci_dev *dev = NULL;
1532 for (k = 0; k < MAX_PCI; k++) {
1534 if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev)))
1537 if (pci_enable_device(dev)) {
1538 #if defined(DEBUG_PCI_DETECT)
1540 ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n",
1541 driver_name, dev->bus->number, dev->devfn);
1547 addr = pci_resource_start(dev, 0);
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);
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;
1560 #endif /* end CONFIG_PCI */
1563 static int eata2x_detect(struct scsi_host_template *tpnt)
1565 unsigned int j = 0, k;
1567 tpnt->proc_name = "eata2x";
1569 if (strlen(boot_options))
1570 option_setup(boot_options);
1573 /* io_port could have been modified when loading as a module */
1574 if (io_port[0] != SKIP) {
1576 io_port[MAX_INT_PARAM] = 0;
1580 for (k = MAX_INT_PARAM; io_port[k]; k++)
1581 if (io_port[k] == SKIP)
1583 else if (io_port[k] <= MAX_ISA_ADDR) {
1586 } else if (io_port[k] >= MIN_EISA_ADDR
1587 && io_port[k] <= MAX_EISA_ADDR) {
1599 for (k = 0; io_port[k]; k++) {
1601 if (io_port[k] == SKIP)
1604 if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt))
1612 static void map_dma(unsigned int i, struct hostdata *ha)
1614 unsigned int k, count, pci_dir;
1615 struct scatterlist *sgpnt;
1617 struct scsi_cmnd *SCpnt;
1621 pci_dir = SCpnt->sc_data_direction;
1623 if (SCpnt->sense_buffer)
1625 H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer,
1626 sizeof SCpnt->sense_buffer, PCI_DMA_FROMDEVICE));
1628 cpp->sense_len = sizeof SCpnt->sense_buffer;
1630 if (!SCpnt->use_sg) {
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;
1636 if (SCpnt->request_buffer)
1637 cpp->data_address = H2DEV(pci_map_single(ha->pdev,
1644 cpp->data_len = H2DEV(SCpnt->request_bufflen);
1648 sgpnt = (struct scatterlist *)SCpnt->request_buffer;
1649 count = pci_map_sg(ha->pdev, sgpnt, SCpnt->use_sg, pci_dir);
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]));
1657 cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist,
1659 sizeof(struct sg_list),
1661 cpp->data_len = H2DEV((SCpnt->use_sg * sizeof(struct sg_list)));
1664 static void unmap_dma(unsigned int i, struct hostdata *ha)
1666 unsigned int pci_dir;
1668 struct scsi_cmnd *SCpnt;
1672 pci_dir = SCpnt->sc_data_direction;
1674 if (DEV2H(cpp->sense_addr))
1675 pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr),
1676 DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
1679 pci_unmap_sg(ha->pdev, SCpnt->request_buffer, SCpnt->use_sg,
1682 if (!DEV2H(cpp->data_len))
1683 pci_dir = PCI_DMA_BIDIRECTIONAL;
1685 if (DEV2H(cpp->data_address))
1686 pci_unmap_single(ha->pdev, DEV2H(cpp->data_address),
1687 DEV2H(cpp->data_len), pci_dir);
1690 static void sync_dma(unsigned int i, struct hostdata *ha)
1692 unsigned int pci_dir;
1694 struct scsi_cmnd *SCpnt;
1698 pci_dir = SCpnt->sc_data_direction;
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);
1706 pci_dma_sync_sg_for_cpu(ha->pdev, SCpnt->request_buffer,
1707 SCpnt->use_sg, pci_dir);
1709 if (!DEV2H(cpp->data_len))
1710 pci_dir = PCI_DMA_BIDIRECTIONAL;
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);
1718 static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha)
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
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
1735 struct scsi_cmnd *SCpnt;
1740 if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1744 } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1748 } else if (SCpnt->sc_data_direction == DMA_NONE) {
1754 if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
1755 panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n",
1758 for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
1759 if (SCpnt->cmnd[0] == data_out_cmds[k]) {
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]) {
1773 static int eata2x_queuecommand(struct scsi_cmnd *SCpnt,
1774 void (*done) (struct scsi_cmnd *))
1776 struct Scsi_Host *shost = SCpnt->device->host;
1777 struct hostdata *ha = (struct hostdata *)shost->hostdata;
1781 if (SCpnt->host_scribble)
1782 panic("%s: qcomm, pid %ld, SCpnt %p already active.\n",
1783 ha->board_name, SCpnt->pid, SCpnt);
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;
1789 for (k = 0; k < shost->can_queue; k++, i++) {
1790 if (i >= shost->can_queue)
1792 if (ha->cp_stat[i] == FREE) {
1793 ha->last_cp_used = i;
1798 if (k == shost->can_queue) {
1799 printk("%s: qcomm, no free mailbox.\n", ha->board_name);
1803 /* Set pointer to control packet structure */
1806 memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
1808 /* Set pointer to status packet structure, Big Endian format */
1809 cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr);
1811 SCpnt->scsi_done = done;
1813 SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index;
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);
1823 if (SCpnt->device->type == TYPE_TAPE)
1827 cpp->channel = SCpnt->device->channel;
1828 cpp->target = SCpnt->device->id;
1829 cpp->lun = SCpnt->device->lun;
1831 memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
1833 /* Use data transfer direction SCpnt->sc_data_direction */
1834 scsi_to_dev_dir(i, ha);
1836 /* Map DMA buffers and SG list */
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);
1846 /* Send control packet to the board */
1847 if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
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);
1856 ha->cp_stat[i] = IN_USE;
1860 static int eata2x_eh_abort(struct scsi_cmnd *SCarg)
1862 struct Scsi_Host *shost = SCarg->device->host;
1863 struct hostdata *ha = (struct hostdata *)shost->hostdata;
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);
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);
1878 if (i >= shost->can_queue)
1879 panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name);
1881 if (wait_on_busy(shost->io_port, MAXLOOP)) {
1882 printk("%s: abort, timeout error.\n", ha->board_name);
1886 if (ha->cp_stat[i] == FREE) {
1887 printk("%s: abort, mbox %d is free.\n", ha->board_name, i);
1891 if (ha->cp_stat[i] == IN_USE) {
1892 printk("%s: abort, mbox %d is in use.\n", ha->board_name, i);
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);
1898 if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)
1899 printk("%s: abort, mbox %d, interrupt pending.\n",
1902 if (SCarg->eh_state == SCSI_STATE_TIMEOUT) {
1904 SCarg->host_scribble = NULL;
1905 ha->cp_stat[i] = FREE;
1907 ("%s, abort, mbox %d, eh_state timeout, pid %ld.\n",
1908 ha->board_name, i, SCarg->pid);
1915 if (ha->cp_stat[i] == IN_RESET) {
1916 printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i);
1920 if (ha->cp_stat[i] == LOCKED) {
1921 printk("%s: abort, mbox %d is locked.\n", ha->board_name, i);
1925 if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
1927 SCarg->result = DID_ABORT << 16;
1928 SCarg->host_scribble = NULL;
1929 ha->cp_stat[i] = FREE;
1930 printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n",
1931 ha->board_name, i, SCarg->pid);
1932 SCarg->scsi_done(SCarg);
1936 panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i);
1939 static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg)
1941 unsigned int i, time, k, c, limit = 0;
1943 struct scsi_cmnd *SCpnt;
1944 struct Scsi_Host *shost = SCarg->device->host;
1945 struct hostdata *ha = (struct hostdata *)shost->hostdata;
1947 printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n",
1948 ha->board_name, SCarg->device->channel, SCarg->device->id,
1949 SCarg->device->lun, SCarg->pid);
1951 spin_lock_irq(shost->host_lock);
1953 if (SCarg->host_scribble == NULL)
1954 printk("%s: reset, pid %ld inactive.\n", ha->board_name, SCarg->pid);
1957 printk("%s: reset, exit, already in reset.\n", ha->board_name);
1958 spin_unlock_irq(shost->host_lock);
1962 if (wait_on_busy(shost->io_port, MAXLOOP)) {
1963 printk("%s: reset, exit, timeout error.\n", ha->board_name);
1964 spin_unlock_irq(shost->host_lock);
1970 for (c = 0; c <= shost->max_channel; c++)
1971 for (k = 0; k < shost->max_id; k++) {
1972 ha->target_redo[k][c] = 1;
1973 ha->target_to[k][c] = 0;
1976 for (i = 0; i < shost->can_queue; i++) {
1978 if (ha->cp_stat[i] == FREE)
1981 if (ha->cp_stat[i] == LOCKED) {
1982 ha->cp_stat[i] = FREE;
1983 printk("%s: reset, locked mbox %d forced free.\n",
1988 if (!(SCpnt = ha->cp[i].SCpnt))
1989 panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
1991 if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
1992 ha->cp_stat[i] = ABORTING;
1993 printk("%s: reset, mbox %d aborting, pid %ld.\n",
1994 ha->board_name, i, SCpnt->pid);
1998 ha->cp_stat[i] = IN_RESET;
1999 printk("%s: reset, mbox %d in reset, pid %ld.\n",
2000 ha->board_name, i, SCpnt->pid);
2003 if (SCpnt->host_scribble == NULL)
2004 panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i);
2006 if (*(unsigned int *)SCpnt->host_scribble != i)
2007 panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i);
2009 if (SCpnt->scsi_done == NULL)
2010 panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n",
2017 if (do_dma(shost->io_port, 0, RESET_PIO)) {
2018 printk("%s: reset, cannot reset, timeout error.\n", ha->board_name);
2019 spin_unlock_irq(shost->host_lock);
2023 printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name);
2025 #if defined(DEBUG_RESET)
2031 spin_unlock_irq(shost->host_lock);
2033 /* FIXME: use a sleep instead */
2035 while ((jiffies - time) < (10 * HZ) && limit++ < 200000)
2038 spin_lock_irq(shost->host_lock);
2040 printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit);
2042 for (i = 0; i < shost->can_queue; i++) {
2044 if (ha->cp_stat[i] == IN_RESET) {
2045 SCpnt = ha->cp[i].SCpnt;
2047 SCpnt->result = DID_RESET << 16;
2048 SCpnt->host_scribble = NULL;
2050 /* This mailbox is still waiting for its interrupt */
2051 ha->cp_stat[i] = LOCKED;
2054 ("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
2055 ha->board_name, i, SCpnt->pid);
2058 else if (ha->cp_stat[i] == ABORTING) {
2059 SCpnt = ha->cp[i].SCpnt;
2061 SCpnt->result = DID_RESET << 16;
2062 SCpnt->host_scribble = NULL;
2064 /* This mailbox was never queued to the adapter */
2065 ha->cp_stat[i] = FREE;
2068 ("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n",
2069 ha->board_name, i, SCpnt->pid);
2073 /* Any other mailbox has already been set free by interrupt */
2076 SCpnt->scsi_done(SCpnt);
2083 printk("%s: reset, exit, pid %ld done.\n", ha->board_name, SCarg->pid);
2085 printk("%s: reset, exit.\n", ha->board_name);
2087 spin_unlock_irq(shost->host_lock);
2091 int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2092 sector_t capacity, int *dkinfo)
2094 unsigned int size = capacity;
2096 if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
2099 dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
2101 #if defined (DEBUG_GEOMETRY)
2102 printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
2103 dkinfo[0], dkinfo[1], dkinfo[2]);
2109 static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
2112 unsigned int i, j, k, y;
2115 for (i = 0; i < n - 1; i++) {
2118 for (j = k + 1; j < n; j++)
2140 static int reorder(struct hostdata *ha, unsigned long cursec,
2141 unsigned int ihdlr, unsigned int il[], unsigned int n_ready)
2143 struct scsi_cmnd *SCpnt;
2146 unsigned int rev = 0, s = 1, r = 1;
2147 unsigned int input_only = 1, overlap = 0;
2148 unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
2149 unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
2150 unsigned long ioseek = 0;
2152 static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
2153 static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
2154 static unsigned int readysorted = 0, revcount = 0;
2155 static unsigned long seeksorted = 0, seeknosort = 0;
2157 if (link_statistics && !(++flushcount % link_statistics))
2158 printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"
2159 " av %ldK as %ldK.\n", flushcount, batchcount,
2160 inputcount, ovlcount, readycount, readysorted, sortcount,
2161 revcount, seeknosort / (readycount + 1),
2162 seeksorted / (readycount + 1));
2167 for (n = 0; n < n_ready; n++) {
2175 if (SCpnt->request->sector < minsec)
2176 minsec = SCpnt->request->sector;
2177 if (SCpnt->request->sector > maxsec)
2178 maxsec = SCpnt->request->sector;
2180 sl[n] = SCpnt->request->sector;
2181 ioseek += SCpnt->request->nr_sectors;
2186 if (sl[n] < sl[n - 1])
2188 if (sl[n] > sl[n - 1])
2191 if (link_statistics) {
2192 if (sl[n] > sl[n - 1])
2193 seek += sl[n] - sl[n - 1];
2195 seek += sl[n - 1] - sl[n];
2200 if (link_statistics) {
2202 seek += cursec - sl[0];
2204 seek += sl[0] - cursec;
2207 if (cursec > ((maxsec + minsec) / 2))
2210 if (ioseek > ((maxsec - minsec) / 2))
2213 if (!((rev && r) || (!rev && s)))
2214 sort(sl, il, n_ready, rev);
2217 for (n = 0; n < n_ready; n++) {
2221 ll[n] = SCpnt->request->nr_sectors;
2227 if ((sl[n] == sl[n - 1])
2228 || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
2229 || (rev && ((sl[n] + ll[n]) > sl[n - 1])))
2234 sort(pl, il, n_ready, 0);
2236 if (link_statistics) {
2238 iseek = cursec - sl[0];
2240 iseek = sl[0] - cursec;
2242 readycount += n_ready;
2243 seeknosort += seek / 1024;
2248 seeksorted += iseek / 1024;
2250 seeksorted += (iseek + maxsec - minsec) / 1024;
2253 readysorted += n_ready;
2257 readysorted += n_ready;
2260 #if defined(DEBUG_LINKED_COMMANDS)
2261 if (link_statistics && (overlap || !(flushcount % link_statistics)))
2262 for (n = 0; n < n_ready; n++) {
2267 ("%s %d.%d:%d pid %ld mb %d fc %d nr %d sec %ld ns %ld"
2268 " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
2269 (ihdlr ? "ihdlr" : "qcomm"),
2270 SCpnt->device->channel, SCpnt->device->id,
2271 SCpnt->device->lun, SCpnt->pid, k, flushcount,
2272 n_ready, SCpnt->request->sector,
2273 SCpnt->request->nr_sectors, cursec, YESNO(s),
2274 YESNO(r), YESNO(rev), YESNO(input_only),
2275 YESNO(overlap), cpp->din);
2281 static void flush_dev(struct scsi_device *dev, unsigned long cursec,
2282 struct hostdata *ha, unsigned int ihdlr)
2284 struct scsi_cmnd *SCpnt;
2286 unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
2288 for (k = 0; k < dev->host->can_queue; k++) {
2290 if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE)
2296 if (SCpnt->device != dev)
2299 if (ha->cp_stat[k] == IN_USE)
2305 if (reorder(ha, cursec, ihdlr, il, n_ready))
2308 for (n = 0; n < n_ready; n++) {
2313 if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
2315 ("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter"
2316 " busy, will abort.\n", ha->board_name,
2317 (ihdlr ? "ihdlr" : "qcomm"),
2318 SCpnt->device->channel, SCpnt->device->id,
2319 SCpnt->device->lun, SCpnt->pid, k);
2320 ha->cp_stat[k] = ABORTING;
2324 ha->cp_stat[k] = IN_USE;
2328 static irqreturn_t ihdlr(int irq, struct Scsi_Host *shost)
2330 struct scsi_cmnd *SCpnt;
2331 unsigned int i, k, c, status, tstatus, reg;
2334 struct hostdata *ha = (struct hostdata *)shost->hostdata;
2336 if (shost->irq != irq)
2337 panic("%s: ihdlr, irq %d, shost->irq %d.\n", ha->board_name, irq,
2340 /* Check if this board need to be serviced */
2341 if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED))
2347 printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq,
2350 /* Check if this board is still busy */
2351 if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) {
2352 reg = inb(shost->io_port + REG_STATUS);
2354 ("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n",
2355 ha->board_name, irq, reg, ha->iocount);
2361 /* Make a local copy just before clearing the interrupt indication */
2362 memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp));
2364 /* Clear the completion flag and cp pointer on the dynamic copy of sp */
2365 memset(ha->sp_cpu_addr, 0, sizeof(struct mssp));
2367 /* Read the status register to clear the interrupt indication */
2368 reg = inb(shost->io_port + REG_STATUS);
2370 #if defined (DEBUG_INTERRUPT)
2372 unsigned char *bytesp;
2374 bytesp = (unsigned char *)spp;
2375 if (ha->iocount < 200) {
2377 for (cnt = 0; cnt < 15; cnt++)
2378 printk(" 0x%x", bytesp[cnt]);
2384 /* Reject any sp with supspect data */
2385 if (spp->eoc == 0 && ha->iocount > 1)
2387 ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n",
2388 ha->board_name, irq, reg, ha->iocount);
2389 if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue)
2391 ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n",
2392 ha->board_name, spp->cpp_index, irq, reg, ha->iocount);
2393 if (spp->eoc == 0 || spp->cpp_index < 0
2394 || spp->cpp_index >= shost->can_queue)
2397 /* Find the mailbox to be serviced on this board */
2402 #if defined(DEBUG_GENERATE_ABORTS)
2403 if ((ha->iocount > 500) && ((ha->iocount % 500) < 3))
2407 if (ha->cp_stat[i] == IGNORE) {
2408 ha->cp_stat[i] = FREE;
2410 } else if (ha->cp_stat[i] == LOCKED) {
2411 ha->cp_stat[i] = FREE;
2412 printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i,
2415 } else if (ha->cp_stat[i] == FREE) {
2416 printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i,
2419 } else if (ha->cp_stat[i] == IN_RESET)
2420 printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i);
2421 else if (ha->cp_stat[i] != IN_USE)
2422 panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
2423 ha->board_name, i, ha->cp_stat[i]);
2425 ha->cp_stat[i] = FREE;
2429 panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
2431 if (SCpnt->host_scribble == NULL)
2432 panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", ha->board_name,
2433 i, SCpnt->pid, SCpnt);
2435 if (*(unsigned int *)SCpnt->host_scribble != i)
2436 panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n",
2437 ha->board_name, i, SCpnt->pid,
2438 *(unsigned int *)SCpnt->host_scribble);
2442 if (linked_comm && SCpnt->device->queue_depth > 2
2443 && TLDEV(SCpnt->device->type))
2444 flush_dev(SCpnt->device, SCpnt->request->sector, ha, 1);
2446 tstatus = status_byte(spp->target_status);
2448 #if defined(DEBUG_GENERATE_ERRORS)
2449 if ((ha->iocount > 500) && ((ha->iocount % 200) < 2))
2450 spp->adapter_status = 0x01;
2453 switch (spp->adapter_status) {
2454 case ASOK: /* status OK */
2456 /* Forces a reset if a disk drive keeps returning BUSY */
2457 if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
2458 status = DID_ERROR << 16;
2460 /* If there was a bus reset, redo operation on each target */
2461 else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
2462 && ha->target_redo[SCpnt->device->id][SCpnt->
2465 status = DID_BUS_BUSY << 16;
2467 /* Works around a flaw in scsi.c */
2468 else if (tstatus == CHECK_CONDITION
2469 && SCpnt->device->type == TYPE_DISK
2470 && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
2471 status = DID_BUS_BUSY << 16;
2474 status = DID_OK << 16;
2476 if (tstatus == GOOD)
2477 ha->target_redo[SCpnt->device->id][SCpnt->device->
2480 if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
2481 (!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 &&
2482 (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
2483 printk("%s: ihdlr, target %d.%d:%d, pid %ld, "
2484 "target_status 0x%x, sense key 0x%x.\n",
2486 SCpnt->device->channel, SCpnt->device->id,
2487 SCpnt->device->lun, SCpnt->pid,
2488 spp->target_status, SCpnt->sense_buffer[2]);
2490 ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0;
2492 if (ha->last_retried_pid == SCpnt->pid)
2496 case ASST: /* Selection Time Out */
2497 case 0x02: /* Command Time Out */
2499 if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1)
2500 status = DID_ERROR << 16;
2502 status = DID_TIME_OUT << 16;
2503 ha->target_to[SCpnt->device->id][SCpnt->device->
2509 /* Perform a limited number of internal retries */
2510 case 0x03: /* SCSI Bus Reset Received */
2511 case 0x04: /* Initial Controller Power-up */
2513 for (c = 0; c <= shost->max_channel; c++)
2514 for (k = 0; k < shost->max_id; k++)
2515 ha->target_redo[k][c] = 1;
2517 if (SCpnt->device->type != TYPE_TAPE
2518 && ha->retries < MAX_INTERNAL_RETRIES) {
2520 #if defined(DID_SOFT_ERROR)
2521 status = DID_SOFT_ERROR << 16;
2523 status = DID_BUS_BUSY << 16;
2527 ha->last_retried_pid = SCpnt->pid;
2529 status = DID_ERROR << 16;
2532 case 0x05: /* Unexpected Bus Phase */
2533 case 0x06: /* Unexpected Bus Free */
2534 case 0x07: /* Bus Parity Error */
2535 case 0x08: /* SCSI Hung */
2536 case 0x09: /* Unexpected Message Reject */
2537 case 0x0a: /* SCSI Bus Reset Stuck */
2538 case 0x0b: /* Auto Request-Sense Failed */
2539 case 0x0c: /* Controller Ram Parity Error */
2541 status = DID_ERROR << 16;
2545 SCpnt->result = status | spp->target_status;
2547 #if defined(DEBUG_INTERRUPT)
2548 if (SCpnt->result || do_trace)
2550 if ((spp->adapter_status != ASOK && ha->iocount > 1000) ||
2551 (spp->adapter_status != ASOK &&
2552 spp->adapter_status != ASST && ha->iocount <= 1000) ||
2553 do_trace || msg_byte(spp->target_status))
2555 printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"
2556 " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n",
2557 ha->board_name, i, spp->adapter_status, spp->target_status,
2558 SCpnt->device->channel, SCpnt->device->id,
2559 SCpnt->device->lun, SCpnt->pid, reg, ha->iocount);
2563 /* Set the command state to inactive */
2564 SCpnt->host_scribble = NULL;
2566 SCpnt->scsi_done(SCpnt);
2569 printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name,
2578 static irqreturn_t do_interrupt_handler(int irq, void *shap,
2579 struct pt_regs *regs)
2581 struct Scsi_Host *shost;
2583 unsigned long spin_flags;
2586 /* Check if the interrupt must be processed by this handler */
2587 if ((j = (unsigned int)((char *)shap - sha)) >= num_boards)
2591 spin_lock_irqsave(shost->host_lock, spin_flags);
2592 ret = ihdlr(irq, shost);
2593 spin_unlock_irqrestore(shost->host_lock, spin_flags);
2597 static int eata2x_release(struct Scsi_Host *shost)
2599 struct hostdata *ha = (struct hostdata *)shost->hostdata;
2602 for (i = 0; i < shost->can_queue; i++)
2603 if ((&ha->cp[i])->sglist)
2604 kfree((&ha->cp[i])->sglist);
2606 for (i = 0; i < shost->can_queue; i++)
2607 pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr,
2608 sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
2610 if (ha->sp_cpu_addr)
2611 pci_free_consistent(ha->pdev, sizeof(struct mssp),
2612 ha->sp_cpu_addr, ha->sp_dma_addr);
2614 free_irq(shost->irq, &sha[ha->board_number]);
2616 if (shost->dma_channel != NO_DMA)
2617 free_dma(shost->dma_channel);
2619 release_region(shost->io_port, shost->n_io_port);
2620 scsi_unregister(shost);
2624 #include "scsi_module.c"
2627 __setup("eata=", option_setup);
2628 #endif /* end MODULE */