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 corresponding
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/string.h>
481 #include <linux/kernel.h>
482 #include <linux/ioport.h>
483 #include <linux/delay.h>
484 #include <linux/proc_fs.h>
485 #include <linux/blkdev.h>
486 #include <linux/interrupt.h>
487 #include <linux/stat.h>
488 #include <linux/pci.h>
489 #include <linux/init.h>
490 #include <linux/ctype.h>
491 #include <linux/spinlock.h>
492 #include <linux/dma-mapping.h>
493 #include <linux/slab.h>
494 #include <asm/byteorder.h>
499 #include <scsi/scsi.h>
500 #include <scsi/scsi_cmnd.h>
501 #include <scsi/scsi_device.h>
502 #include <scsi/scsi_host.h>
503 #include <scsi/scsi_tcq.h>
504 #include <scsi/scsicam.h>
506 static int eata2x_detect(struct scsi_host_template *);
507 static int eata2x_release(struct Scsi_Host *);
508 static int eata2x_queuecommand(struct Scsi_Host *, 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];
841 /* Initialize num_boards so that ihdlr can work while detect is in progress */
842 static unsigned int num_boards = MAX_BOARDS;
844 static unsigned long io_port[] = {
846 /* Space for MAX_INT_PARAM ports usable while loading as a module */
847 SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
853 /* Space for MAX_PCI ports possibly reported by PCI_BIOS */
854 SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
855 SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
858 0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88,
859 0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88,
861 /* Other (MAX_ISA - 1) ports */
868 /* Device is Big Endian */
869 #define H2DEV(x) cpu_to_be32(x)
870 #define DEV2H(x) be32_to_cpu(x)
871 #define H2DEV16(x) cpu_to_be16(x)
872 #define DEV2H16(x) be16_to_cpu(x)
874 /* But transfer orientation from the 16 bit data register is Little Endian */
875 #define REG2H(x) le16_to_cpu(x)
877 static irqreturn_t do_interrupt_handler(int, void *);
878 static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *,
880 static int do_trace = 0;
881 static int setup_done = 0;
882 static int link_statistics;
883 static int ext_tran = 0;
884 static int rev_scan = 1;
886 #if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE)
887 static int tag_mode = TAG_SIMPLE;
889 static int tag_mode = TAG_DISABLED;
892 #if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS)
893 static int linked_comm = 1;
895 static int linked_comm = 0;
898 #if defined(CONFIG_SCSI_EATA_MAX_TAGS)
899 static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS;
901 static int max_queue_depth = MAX_CMD_PER_LUN;
904 #if defined(CONFIG_ISA)
905 static int isa_probe = 1;
907 static int isa_probe = 0;
910 #if defined(CONFIG_EISA)
911 static int eisa_probe = 1;
913 static int eisa_probe = 0;
916 #if defined(CONFIG_PCI)
917 static int pci_probe = 1;
919 static int pci_probe = 0;
922 #define MAX_INT_PARAM 10
923 #define MAX_BOOT_OPTIONS_SIZE 256
924 static char boot_options[MAX_BOOT_OPTIONS_SIZE];
927 #include <linux/module.h>
928 #include <linux/moduleparam.h>
930 module_param_string(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0);
931 MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option."
932 " Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\"");
933 MODULE_AUTHOR("Dario Ballabio");
934 MODULE_LICENSE("GPL");
935 MODULE_DESCRIPTION("EATA/DMA SCSI Driver");
939 static int eata2x_slave_configure(struct scsi_device *dev)
942 char *tag_suffix, *link_suffix;
944 utqd = MAX_CMD_PER_LUN;
945 tqd = max_queue_depth;
947 if (TLDEV(dev->type) && dev->tagged_supported) {
948 if (tag_mode == TAG_SIMPLE) {
949 tag_suffix = ", simple tags";
950 } else if (tag_mode == TAG_ORDERED) {
951 tag_suffix = ", ordered tags";
953 tag_suffix = ", no tags";
955 scsi_change_queue_depth(dev, tqd);
956 } else if (TLDEV(dev->type) && linked_comm) {
957 scsi_change_queue_depth(dev, tqd);
958 tag_suffix = ", untagged";
960 scsi_change_queue_depth(dev, utqd);
964 if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2)
965 link_suffix = ", sorted";
966 else if (TLDEV(dev->type))
967 link_suffix = ", unsorted";
971 sdev_printk(KERN_INFO, dev,
972 "cmds/lun %d%s%s.\n",
973 dev->queue_depth, link_suffix, tag_suffix);
978 static int wait_on_busy(unsigned long iobase, unsigned int loop)
980 while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) {
988 static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd)
990 unsigned char *byaddr;
991 unsigned long devaddr;
993 if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP)))
997 devaddr = H2DEV(addr);
998 byaddr = (unsigned char *)&devaddr;
999 outb(byaddr[3], iobase + REG_LOW);
1000 outb(byaddr[2], iobase + REG_LM);
1001 outb(byaddr[1], iobase + REG_MID);
1002 outb(byaddr[0], iobase + REG_MSB);
1005 outb(cmd, iobase + REG_CMD);
1009 static int read_pio(unsigned long iobase, ushort * start, ushort * end)
1011 unsigned int loop = MAXLOOP;
1014 for (p = start; p <= end; p++) {
1015 while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) {
1021 *p = REG2H(inw(iobase));
1027 static struct pci_dev *get_pci_dev(unsigned long port_base)
1029 #if defined(CONFIG_PCI)
1031 struct pci_dev *dev = NULL;
1033 while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
1034 addr = pci_resource_start(dev, 0);
1036 #if defined(DEBUG_PCI_DETECT)
1037 printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n",
1038 driver_name, dev->bus->number, dev->devfn, addr);
1041 /* we are in so much trouble for a pci hotplug system with this driver
1042 * anyway, so doing this at least lets people unload the driver and not
1043 * cause memory problems, but in general this is a bad thing to do (this
1044 * driver needs to be converted to the proper PCI api someday... */
1046 if (addr + PCI_BASE_ADDRESS_0 == port_base)
1049 #endif /* end CONFIG_PCI */
1053 static void enable_pci_ports(void)
1055 #if defined(CONFIG_PCI)
1056 struct pci_dev *dev = NULL;
1058 while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
1059 #if defined(DEBUG_PCI_DETECT)
1060 printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n",
1061 driver_name, dev->bus->number, dev->devfn);
1064 if (pci_enable_device(dev))
1066 ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n",
1067 driver_name, dev->bus->number, dev->devfn);
1070 #endif /* end CONFIG_PCI */
1073 static int port_detect(unsigned long port_base, unsigned int j,
1074 struct scsi_host_template *tpnt)
1076 unsigned char irq, dma_channel, subversion, i, is_pci = 0;
1077 unsigned char protocol_rev;
1078 struct eata_info info;
1079 char *bus_type, dma_name[16];
1080 struct pci_dev *pdev;
1081 /* Allowed DMA channels for ISA (0 indicates reserved) */
1082 unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
1083 struct Scsi_Host *shost;
1084 struct hostdata *ha;
1087 sprintf(name, "%s%d", driver_name, j);
1089 if (!request_region(port_base, REGION_SIZE, driver_name)) {
1090 #if defined(DEBUG_DETECT)
1091 printk("%s: address 0x%03lx in use, skipping probe.\n", name,
1097 if (do_dma(port_base, 0, READ_CONFIG_PIO)) {
1098 #if defined(DEBUG_DETECT)
1099 printk("%s: detect, do_dma failed at 0x%03lx.\n", name,
1105 /* Read the info structure */
1106 if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) {
1107 #if defined(DEBUG_DETECT)
1108 printk("%s: detect, read_pio failed at 0x%03lx.\n", name,
1114 info.data_len = DEV2H(info.data_len);
1115 info.sign = DEV2H(info.sign);
1116 info.cp_pad_len = DEV2H16(info.cp_pad_len);
1117 info.cp_len = DEV2H(info.cp_len);
1118 info.sp_len = DEV2H(info.sp_len);
1119 info.scatt_size = DEV2H16(info.scatt_size);
1120 info.queue_size = DEV2H16(info.queue_size);
1122 /* Check the controller "EATA" signature */
1123 if (info.sign != EATA_SIG_BE) {
1124 #if defined(DEBUG_DETECT)
1125 printk("%s: signature 0x%04x discarded.\n", name, info.sign);
1130 if (info.data_len < EATA_2_0A_SIZE) {
1132 ("%s: config structure size (%d bytes) too short, detaching.\n",
1133 name, info.data_len);
1135 } else if (info.data_len == EATA_2_0A_SIZE)
1137 else if (info.data_len == EATA_2_0B_SIZE)
1142 if (protocol_rev != 'A' && info.forcaddr) {
1143 printk("%s: warning, port address has been forced.\n", name);
1147 } else if (port_base > MAX_EISA_ADDR
1148 || (protocol_rev == 'C' && info.pci)) {
1152 } else if (port_base >= MIN_EISA_ADDR
1153 || (protocol_rev == 'C' && info.eisa)) {
1156 } else if (protocol_rev == 'C' && !info.eisa && !info.pci) {
1159 } else if (port_base > MAX_ISA_ADDR) {
1168 if (!info.haaval || info.ata) {
1170 ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n",
1171 name, port_base, bus_type, info.haaval, info.ata);
1176 if (subversion == ESA)
1177 printk("%s: warning, weird %s board using DMA.\n", name,
1181 dma_channel = dma_channel_table[3 - info.drqx];
1183 if (subversion == ISA)
1184 printk("%s: warning, weird %s board not using DMA.\n",
1188 dma_channel = NO_DMA;
1192 printk("%s: warning, DMA protocol support not asserted.\n",
1197 if (subversion == ESA && !info.irq_tr)
1199 ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n",
1203 pdev = get_pci_dev(port_base);
1206 ("%s: warning, failed to get pci_dev structure.\n",
1211 if (pdev && (irq != pdev->irq)) {
1212 printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq,
1217 /* Board detected, allocate its IRQ */
1218 if (request_irq(irq, do_interrupt_handler,
1219 (subversion == ESA) ? IRQF_SHARED : 0,
1220 driver_name, (void *)&sha[j])) {
1221 printk("%s: unable to allocate IRQ %u, detaching.\n", name,
1226 if (subversion == ISA && request_dma(dma_channel, driver_name)) {
1227 printk("%s: unable to allocate DMA channel %u, detaching.\n",
1231 #if defined(FORCE_CONFIG)
1233 struct eata_config *cf;
1234 dma_addr_t cf_dma_addr;
1236 cf = pci_zalloc_consistent(pdev, sizeof(struct eata_config),
1241 ("%s: config, pci_alloc_consistent failed, detaching.\n",
1246 /* Set board configuration */
1247 cf->len = (ushort) H2DEV16((ushort) 510);
1250 if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) {
1252 ("%s: busy timeout sending configuration, detaching.\n",
1254 pci_free_consistent(pdev, sizeof(struct eata_config),
1262 sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata));
1263 if (shost == NULL) {
1264 printk("%s: unable to register host, detaching.\n", name);
1268 shost->io_port = port_base;
1269 shost->unique_id = port_base;
1270 shost->n_io_port = REGION_SIZE;
1271 shost->dma_channel = dma_channel;
1273 shost->sg_tablesize = (ushort) info.scatt_size;
1274 shost->this_id = (ushort) info.host_addr[3];
1275 shost->can_queue = (ushort) info.queue_size;
1276 shost->cmd_per_lun = MAX_CMD_PER_LUN;
1278 ha = (struct hostdata *)shost->hostdata;
1280 memset(ha, 0, sizeof(struct hostdata));
1281 ha->subversion = subversion;
1282 ha->protocol_rev = protocol_rev;
1283 ha->is_pci = is_pci;
1285 ha->board_number = j;
1287 if (ha->subversion == ESA)
1288 shost->unchecked_isa_dma = 0;
1290 unsigned long flags;
1291 shost->unchecked_isa_dma = 1;
1293 flags = claim_dma_lock();
1294 disable_dma(dma_channel);
1295 clear_dma_ff(dma_channel);
1296 set_dma_mode(dma_channel, DMA_MODE_CASCADE);
1297 enable_dma(dma_channel);
1298 release_dma_lock(flags);
1302 strcpy(ha->board_name, name);
1304 /* DPT PM2012 does not allow to detect sg_tablesize correctly */
1305 if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) {
1306 printk("%s: detect, wrong n. of SG lists %d, fixed.\n",
1307 ha->board_name, shost->sg_tablesize);
1308 shost->sg_tablesize = MAX_SGLIST;
1311 /* DPT PM2012 does not allow to detect can_queue correctly */
1312 if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) {
1313 printk("%s: detect, wrong n. of mbox %d, fixed.\n",
1314 ha->board_name, shost->can_queue);
1315 shost->can_queue = MAX_MAILBOXES;
1318 if (protocol_rev != 'A') {
1319 if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL)
1320 shost->max_channel = info.max_chan;
1322 if (info.max_id > 7 && info.max_id < MAX_TARGET)
1323 shost->max_id = info.max_id + 1;
1325 if (info.large_sg && shost->sg_tablesize == MAX_SGLIST)
1326 shost->sg_tablesize = MAX_LARGE_SGLIST;
1329 if (protocol_rev == 'C') {
1330 if (info.max_lun > 7 && info.max_lun < MAX_LUN)
1331 shost->max_lun = info.max_lun + 1;
1334 if (dma_channel == NO_DMA)
1335 sprintf(dma_name, "%s", "BMST");
1337 sprintf(dma_name, "DMA %u", dma_channel);
1339 for (i = 0; i < shost->can_queue; i++)
1340 ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev,
1342 sizeof(struct mscp),
1343 PCI_DMA_BIDIRECTIONAL);
1345 for (i = 0; i < shost->can_queue; i++) {
1346 size_t sz = shost->sg_tablesize *sizeof(struct sg_list);
1347 gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC;
1348 ha->cp[i].sglist = kmalloc(sz, gfp_mask);
1349 if (!ha->cp[i].sglist) {
1351 ("%s: kmalloc SGlist failed, mbox %d, detaching.\n",
1357 if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev,
1358 sizeof(struct mssp),
1359 &ha->sp_dma_addr))) {
1360 printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name);
1364 if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
1365 max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
1367 if (max_queue_depth < MAX_CMD_PER_LUN)
1368 max_queue_depth = MAX_CMD_PER_LUN;
1370 if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
1371 tag_mode = TAG_ORDERED;
1375 ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n");
1377 ("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, "
1378 "ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode,
1379 YESNO(linked_comm), max_queue_depth, YESNO(rev_scan),
1380 YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe),
1384 printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n",
1385 ha->board_name, ha->protocol_rev, bus_type,
1386 (unsigned long)shost->io_port, shost->irq, dma_name,
1387 shost->sg_tablesize, shost->can_queue);
1389 if (shost->max_id > 8 || shost->max_lun > 8)
1391 ("%s: wide SCSI support enabled, max_id %u, max_lun %llu.\n",
1392 ha->board_name, shost->max_id, shost->max_lun);
1394 for (i = 0; i <= shost->max_channel; i++)
1395 printk("%s: SCSI channel %u enabled, host target ID %d.\n",
1396 ha->board_name, i, info.host_addr[3 - i]);
1398 #if defined(DEBUG_DETECT)
1399 printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, "
1400 "sec. %u, infol %d, cpl %d spl %d.\n", name, info.version,
1401 info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync,
1402 info.second, info.data_len, info.cp_len, info.sp_len);
1404 if (protocol_rev == 'B' || protocol_rev == 'C')
1405 printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, "
1406 "large_sg %u, res1 %u.\n", name, info.isaena,
1407 info.forcaddr, info.max_id, info.max_chan, info.large_sg,
1410 if (protocol_rev == 'C')
1411 printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, "
1412 "raidnum %u.\n", name, info.max_lun, info.m1,
1413 info.idquest, info.pci, info.eisa, info.raidnum);
1417 pci_set_master(ha->pdev);
1418 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)))
1419 printk("%s: warning, pci_set_dma_mask failed.\n",
1426 if (subversion == ISA)
1427 free_dma(dma_channel);
1429 free_irq(irq, &sha[j]);
1431 release_region(port_base, REGION_SIZE);
1436 eata2x_release(shost);
1440 static void internal_setup(char *str, int *ints)
1442 int i, argc = ints[0];
1443 char *cur = str, *pc;
1446 if (argc > MAX_INT_PARAM)
1447 argc = MAX_INT_PARAM;
1449 for (i = 0; i < argc; i++)
1450 io_port[i] = ints[i + 1];
1456 while (cur && (pc = strchr(cur, ':'))) {
1457 int val = 0, c = *++pc;
1459 if (c == 'n' || c == 'N')
1461 else if (c == 'y' || c == 'Y')
1464 val = (int)simple_strtoul(pc, NULL, 0);
1466 if (!strncmp(cur, "lc:", 3))
1468 else if (!strncmp(cur, "tm:", 3))
1470 else if (!strncmp(cur, "tc:", 3))
1472 else if (!strncmp(cur, "mq:", 3))
1473 max_queue_depth = val;
1474 else if (!strncmp(cur, "ls:", 3))
1475 link_statistics = val;
1476 else if (!strncmp(cur, "et:", 3))
1478 else if (!strncmp(cur, "rs:", 3))
1480 else if (!strncmp(cur, "ip:", 3))
1482 else if (!strncmp(cur, "ep:", 3))
1484 else if (!strncmp(cur, "pp:", 3))
1487 if ((cur = strchr(cur, ',')))
1494 static int option_setup(char *str)
1496 int ints[MAX_INT_PARAM];
1500 while (cur && isdigit(*cur) && i < MAX_INT_PARAM) {
1501 ints[i++] = simple_strtoul(cur, NULL, 0);
1503 if ((cur = strchr(cur, ',')) != NULL)
1508 internal_setup(cur, ints);
1512 static void add_pci_ports(void)
1514 #if defined(CONFIG_PCI)
1515 unsigned int addr, k;
1516 struct pci_dev *dev = NULL;
1518 for (k = 0; k < MAX_PCI; k++) {
1520 if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev)))
1523 if (pci_enable_device(dev)) {
1524 #if defined(DEBUG_PCI_DETECT)
1526 ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n",
1527 driver_name, dev->bus->number, dev->devfn);
1533 addr = pci_resource_start(dev, 0);
1535 #if defined(DEBUG_PCI_DETECT)
1536 printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n",
1537 driver_name, k, dev->bus->number, dev->devfn, addr);
1540 /* Order addresses according to rev_scan value */
1541 io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] =
1542 addr + PCI_BASE_ADDRESS_0;
1546 #endif /* end CONFIG_PCI */
1549 static int eata2x_detect(struct scsi_host_template *tpnt)
1551 unsigned int j = 0, k;
1553 tpnt->proc_name = "eata2x";
1555 if (strlen(boot_options))
1556 option_setup(boot_options);
1559 /* io_port could have been modified when loading as a module */
1560 if (io_port[0] != SKIP) {
1562 io_port[MAX_INT_PARAM] = 0;
1566 for (k = MAX_INT_PARAM; io_port[k]; k++)
1567 if (io_port[k] == SKIP)
1569 else if (io_port[k] <= MAX_ISA_ADDR) {
1572 } else if (io_port[k] >= MIN_EISA_ADDR
1573 && io_port[k] <= MAX_EISA_ADDR) {
1585 for (k = 0; io_port[k]; k++) {
1587 if (io_port[k] == SKIP)
1590 if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt))
1598 static void map_dma(unsigned int i, struct hostdata *ha)
1600 unsigned int k, pci_dir;
1602 struct scatterlist *sg;
1604 struct scsi_cmnd *SCpnt;
1608 pci_dir = SCpnt->sc_data_direction;
1610 if (SCpnt->sense_buffer)
1612 H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer,
1613 SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
1615 cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
1617 if (!scsi_sg_count(SCpnt)) {
1622 count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
1626 scsi_for_each_sg(SCpnt, sg, count, k) {
1627 cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
1628 cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
1632 cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist,
1633 scsi_sg_count(SCpnt) *
1634 sizeof(struct sg_list),
1636 cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list)));
1639 static void unmap_dma(unsigned int i, struct hostdata *ha)
1641 unsigned int pci_dir;
1643 struct scsi_cmnd *SCpnt;
1647 pci_dir = SCpnt->sc_data_direction;
1649 if (DEV2H(cpp->sense_addr))
1650 pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr),
1651 DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
1653 if (scsi_sg_count(SCpnt))
1654 pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
1657 if (!DEV2H(cpp->data_len))
1658 pci_dir = PCI_DMA_BIDIRECTIONAL;
1660 if (DEV2H(cpp->data_address))
1661 pci_unmap_single(ha->pdev, DEV2H(cpp->data_address),
1662 DEV2H(cpp->data_len), pci_dir);
1665 static void sync_dma(unsigned int i, struct hostdata *ha)
1667 unsigned int pci_dir;
1669 struct scsi_cmnd *SCpnt;
1673 pci_dir = SCpnt->sc_data_direction;
1675 if (DEV2H(cpp->sense_addr))
1676 pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr),
1677 DEV2H(cpp->sense_len),
1678 PCI_DMA_FROMDEVICE);
1680 if (scsi_sg_count(SCpnt))
1681 pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt),
1682 scsi_sg_count(SCpnt), pci_dir);
1684 if (!DEV2H(cpp->data_len))
1685 pci_dir = PCI_DMA_BIDIRECTIONAL;
1687 if (DEV2H(cpp->data_address))
1688 pci_dma_sync_single_for_cpu(ha->pdev,
1689 DEV2H(cpp->data_address),
1690 DEV2H(cpp->data_len), pci_dir);
1693 static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha)
1697 static const unsigned char data_out_cmds[] = {
1698 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
1699 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
1700 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d
1703 static const unsigned char data_none_cmds[] = {
1704 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
1705 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
1706 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00
1710 struct scsi_cmnd *SCpnt;
1715 if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1719 } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1723 } else if (SCpnt->sc_data_direction == DMA_NONE) {
1729 if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
1730 panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n",
1733 for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
1734 if (SCpnt->cmnd[0] == data_out_cmds[k]) {
1739 if ((cpp->din = !cpp->dout))
1740 for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
1741 if (SCpnt->cmnd[0] == data_none_cmds[k]) {
1748 static int eata2x_queuecommand_lck(struct scsi_cmnd *SCpnt,
1749 void (*done) (struct scsi_cmnd *))
1751 struct Scsi_Host *shost = SCpnt->device->host;
1752 struct hostdata *ha = (struct hostdata *)shost->hostdata;
1756 if (SCpnt->host_scribble)
1757 panic("%s: qcomm, SCpnt %p already active.\n",
1758 ha->board_name, SCpnt);
1760 /* i is the mailbox number, look for the first free mailbox
1761 starting from last_cp_used */
1762 i = ha->last_cp_used + 1;
1764 for (k = 0; k < shost->can_queue; k++, i++) {
1765 if (i >= shost->can_queue)
1767 if (ha->cp_stat[i] == FREE) {
1768 ha->last_cp_used = i;
1773 if (k == shost->can_queue) {
1774 printk("%s: qcomm, no free mailbox.\n", ha->board_name);
1778 /* Set pointer to control packet structure */
1781 memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
1783 /* Set pointer to status packet structure, Big Endian format */
1784 cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr);
1786 SCpnt->scsi_done = done;
1788 SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index;
1791 scmd_printk(KERN_INFO, SCpnt,
1792 "qcomm, mbox %d.\n", i);
1797 if (SCpnt->device->type == TYPE_TAPE)
1801 cpp->channel = SCpnt->device->channel;
1802 cpp->target = SCpnt->device->id;
1803 cpp->lun = SCpnt->device->lun;
1805 memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
1807 /* Use data transfer direction SCpnt->sc_data_direction */
1808 scsi_to_dev_dir(i, ha);
1810 /* Map DMA buffers and SG list */
1813 if (linked_comm && SCpnt->device->queue_depth > 2
1814 && TLDEV(SCpnt->device->type)) {
1815 ha->cp_stat[i] = READY;
1816 flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 0);
1820 /* Send control packet to the board */
1821 if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
1823 SCpnt->host_scribble = NULL;
1824 scmd_printk(KERN_INFO, SCpnt, "qcomm, adapter busy.\n");
1828 ha->cp_stat[i] = IN_USE;
1832 static DEF_SCSI_QCMD(eata2x_queuecommand)
1834 static int eata2x_eh_abort(struct scsi_cmnd *SCarg)
1836 struct Scsi_Host *shost = SCarg->device->host;
1837 struct hostdata *ha = (struct hostdata *)shost->hostdata;
1840 if (SCarg->host_scribble == NULL) {
1841 scmd_printk(KERN_INFO, SCarg, "abort, cmd inactive.\n");
1845 i = *(unsigned int *)SCarg->host_scribble;
1846 scmd_printk(KERN_WARNING, SCarg, "abort, mbox %d.\n", i);
1848 if (i >= shost->can_queue)
1849 panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name);
1851 if (wait_on_busy(shost->io_port, MAXLOOP)) {
1852 printk("%s: abort, timeout error.\n", ha->board_name);
1856 if (ha->cp_stat[i] == FREE) {
1857 printk("%s: abort, mbox %d is free.\n", ha->board_name, i);
1861 if (ha->cp_stat[i] == IN_USE) {
1862 printk("%s: abort, mbox %d is in use.\n", ha->board_name, i);
1864 if (SCarg != ha->cp[i].SCpnt)
1865 panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
1866 ha->board_name, i, SCarg, ha->cp[i].SCpnt);
1868 if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)
1869 printk("%s: abort, mbox %d, interrupt pending.\n",
1875 if (ha->cp_stat[i] == IN_RESET) {
1876 printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i);
1880 if (ha->cp_stat[i] == LOCKED) {
1881 printk("%s: abort, mbox %d is locked.\n", ha->board_name, i);
1885 if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
1887 SCarg->result = DID_ABORT << 16;
1888 SCarg->host_scribble = NULL;
1889 ha->cp_stat[i] = FREE;
1890 printk("%s, abort, mbox %d ready, DID_ABORT, done.\n",
1892 SCarg->scsi_done(SCarg);
1896 panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i);
1899 static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg)
1901 unsigned int i, time, k, c, limit = 0;
1903 struct scsi_cmnd *SCpnt;
1904 struct Scsi_Host *shost = SCarg->device->host;
1905 struct hostdata *ha = (struct hostdata *)shost->hostdata;
1907 scmd_printk(KERN_INFO, SCarg, "reset, enter.\n");
1909 spin_lock_irq(shost->host_lock);
1911 if (SCarg->host_scribble == NULL)
1912 printk("%s: reset, inactive.\n", ha->board_name);
1915 printk("%s: reset, exit, already in reset.\n", ha->board_name);
1916 spin_unlock_irq(shost->host_lock);
1920 if (wait_on_busy(shost->io_port, MAXLOOP)) {
1921 printk("%s: reset, exit, timeout error.\n", ha->board_name);
1922 spin_unlock_irq(shost->host_lock);
1928 for (c = 0; c <= shost->max_channel; c++)
1929 for (k = 0; k < shost->max_id; k++) {
1930 ha->target_redo[k][c] = 1;
1931 ha->target_to[k][c] = 0;
1934 for (i = 0; i < shost->can_queue; i++) {
1936 if (ha->cp_stat[i] == FREE)
1939 if (ha->cp_stat[i] == LOCKED) {
1940 ha->cp_stat[i] = FREE;
1941 printk("%s: reset, locked mbox %d forced free.\n",
1946 if (!(SCpnt = ha->cp[i].SCpnt))
1947 panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
1949 if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
1950 ha->cp_stat[i] = ABORTING;
1951 printk("%s: reset, mbox %d aborting.\n",
1956 ha->cp_stat[i] = IN_RESET;
1957 printk("%s: reset, mbox %d in reset.\n",
1961 if (SCpnt->host_scribble == NULL)
1962 panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i);
1964 if (*(unsigned int *)SCpnt->host_scribble != i)
1965 panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i);
1967 if (SCpnt->scsi_done == NULL)
1968 panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n",
1975 if (do_dma(shost->io_port, 0, RESET_PIO)) {
1976 printk("%s: reset, cannot reset, timeout error.\n", ha->board_name);
1977 spin_unlock_irq(shost->host_lock);
1981 printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name);
1983 #if defined(DEBUG_RESET)
1989 spin_unlock_irq(shost->host_lock);
1991 /* FIXME: use a sleep instead */
1993 while ((jiffies - time) < (10 * HZ) && limit++ < 200000)
1996 spin_lock_irq(shost->host_lock);
1998 printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit);
2000 for (i = 0; i < shost->can_queue; i++) {
2002 if (ha->cp_stat[i] == IN_RESET) {
2003 SCpnt = ha->cp[i].SCpnt;
2005 SCpnt->result = DID_RESET << 16;
2006 SCpnt->host_scribble = NULL;
2008 /* This mailbox is still waiting for its interrupt */
2009 ha->cp_stat[i] = LOCKED;
2012 ("%s, reset, mbox %d locked, DID_RESET, done.\n",
2016 else if (ha->cp_stat[i] == ABORTING) {
2017 SCpnt = ha->cp[i].SCpnt;
2019 SCpnt->result = DID_RESET << 16;
2020 SCpnt->host_scribble = NULL;
2022 /* This mailbox was never queued to the adapter */
2023 ha->cp_stat[i] = FREE;
2026 ("%s, reset, mbox %d aborting, DID_RESET, done.\n",
2031 /* Any other mailbox has already been set free by interrupt */
2034 SCpnt->scsi_done(SCpnt);
2041 printk("%s: reset, exit, done.\n", ha->board_name);
2043 printk("%s: reset, exit.\n", ha->board_name);
2045 spin_unlock_irq(shost->host_lock);
2049 int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2050 sector_t capacity, int *dkinfo)
2052 unsigned int size = capacity;
2054 if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
2057 dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
2059 #if defined (DEBUG_GEOMETRY)
2060 printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
2061 dkinfo[0], dkinfo[1], dkinfo[2]);
2067 static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
2070 unsigned int i, j, k, y;
2073 for (i = 0; i < n - 1; i++) {
2076 for (j = k + 1; j < n; j++)
2098 static int reorder(struct hostdata *ha, unsigned long cursec,
2099 unsigned int ihdlr, unsigned int il[], unsigned int n_ready)
2101 struct scsi_cmnd *SCpnt;
2104 unsigned int rev = 0, s = 1, r = 1;
2105 unsigned int input_only = 1, overlap = 0;
2106 unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
2107 unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
2108 unsigned long ioseek = 0;
2110 static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
2111 static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
2112 static unsigned int readysorted = 0, revcount = 0;
2113 static unsigned long seeksorted = 0, seeknosort = 0;
2115 if (link_statistics && !(++flushcount % link_statistics))
2116 printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"
2117 " av %ldK as %ldK.\n", flushcount, batchcount,
2118 inputcount, ovlcount, readycount, readysorted, sortcount,
2119 revcount, seeknosort / (readycount + 1),
2120 seeksorted / (readycount + 1));
2125 for (n = 0; n < n_ready; n++) {
2133 if (blk_rq_pos(SCpnt->request) < minsec)
2134 minsec = blk_rq_pos(SCpnt->request);
2135 if (blk_rq_pos(SCpnt->request) > maxsec)
2136 maxsec = blk_rq_pos(SCpnt->request);
2138 sl[n] = blk_rq_pos(SCpnt->request);
2139 ioseek += blk_rq_sectors(SCpnt->request);
2144 if (sl[n] < sl[n - 1])
2146 if (sl[n] > sl[n - 1])
2149 if (link_statistics) {
2150 if (sl[n] > sl[n - 1])
2151 seek += sl[n] - sl[n - 1];
2153 seek += sl[n - 1] - sl[n];
2158 if (link_statistics) {
2160 seek += cursec - sl[0];
2162 seek += sl[0] - cursec;
2165 if (cursec > ((maxsec + minsec) / 2))
2168 if (ioseek > ((maxsec - minsec) / 2))
2171 if (!((rev && r) || (!rev && s)))
2172 sort(sl, il, n_ready, rev);
2175 for (n = 0; n < n_ready; n++) {
2179 ll[n] = blk_rq_sectors(SCpnt->request);
2180 pl[n] = SCpnt->serial_number;
2185 if ((sl[n] == sl[n - 1])
2186 || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
2187 || (rev && ((sl[n] + ll[n]) > sl[n - 1])))
2192 sort(pl, il, n_ready, 0);
2194 if (link_statistics) {
2196 iseek = cursec - sl[0];
2198 iseek = sl[0] - cursec;
2200 readycount += n_ready;
2201 seeknosort += seek / 1024;
2206 seeksorted += iseek / 1024;
2208 seeksorted += (iseek + maxsec - minsec) / 1024;
2211 readysorted += n_ready;
2215 readysorted += n_ready;
2218 #if defined(DEBUG_LINKED_COMMANDS)
2219 if (link_statistics && (overlap || !(flushcount % link_statistics)))
2220 for (n = 0; n < n_ready; n++) {
2224 scmd_printk(KERN_INFO, SCpnt,
2225 "%s mb %d fc %d nr %d sec %ld ns %u"
2226 " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
2227 (ihdlr ? "ihdlr" : "qcomm"),
2229 n_ready, blk_rq_pos(SCpnt->request),
2230 blk_rq_sectors(SCpnt->request), cursec, YESNO(s),
2231 YESNO(r), YESNO(rev), YESNO(input_only),
2232 YESNO(overlap), cpp->din);
2238 static void flush_dev(struct scsi_device *dev, unsigned long cursec,
2239 struct hostdata *ha, unsigned int ihdlr)
2241 struct scsi_cmnd *SCpnt;
2243 unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
2245 for (k = 0; k < dev->host->can_queue; k++) {
2247 if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE)
2253 if (SCpnt->device != dev)
2256 if (ha->cp_stat[k] == IN_USE)
2262 if (reorder(ha, cursec, ihdlr, il, n_ready))
2265 for (n = 0; n < n_ready; n++) {
2270 if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
2271 scmd_printk(KERN_INFO, SCpnt,
2272 "%s, mbox %d, adapter"
2273 " busy, will abort.\n",
2274 (ihdlr ? "ihdlr" : "qcomm"),
2276 ha->cp_stat[k] = ABORTING;
2280 ha->cp_stat[k] = IN_USE;
2284 static irqreturn_t ihdlr(struct Scsi_Host *shost)
2286 struct scsi_cmnd *SCpnt;
2287 unsigned int i, k, c, status, tstatus, reg;
2290 struct hostdata *ha = (struct hostdata *)shost->hostdata;
2291 int irq = shost->irq;
2293 /* Check if this board need to be serviced */
2294 if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED))
2300 printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq,
2303 /* Check if this board is still busy */
2304 if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) {
2305 reg = inb(shost->io_port + REG_STATUS);
2307 ("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n",
2308 ha->board_name, irq, reg, ha->iocount);
2314 /* Make a local copy just before clearing the interrupt indication */
2315 memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp));
2317 /* Clear the completion flag and cp pointer on the dynamic copy of sp */
2318 memset(ha->sp_cpu_addr, 0, sizeof(struct mssp));
2320 /* Read the status register to clear the interrupt indication */
2321 reg = inb(shost->io_port + REG_STATUS);
2323 #if defined (DEBUG_INTERRUPT)
2325 unsigned char *bytesp;
2327 bytesp = (unsigned char *)spp;
2328 if (ha->iocount < 200) {
2330 for (cnt = 0; cnt < 15; cnt++)
2331 printk(" 0x%x", bytesp[cnt]);
2337 /* Reject any sp with supspect data */
2338 if (spp->eoc == 0 && ha->iocount > 1)
2340 ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n",
2341 ha->board_name, irq, reg, ha->iocount);
2342 if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue)
2344 ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n",
2345 ha->board_name, spp->cpp_index, irq, reg, ha->iocount);
2346 if (spp->eoc == 0 || spp->cpp_index < 0
2347 || spp->cpp_index >= shost->can_queue)
2350 /* Find the mailbox to be serviced on this board */
2355 #if defined(DEBUG_GENERATE_ABORTS)
2356 if ((ha->iocount > 500) && ((ha->iocount % 500) < 3))
2360 if (ha->cp_stat[i] == IGNORE) {
2361 ha->cp_stat[i] = FREE;
2363 } else if (ha->cp_stat[i] == LOCKED) {
2364 ha->cp_stat[i] = FREE;
2365 printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i,
2368 } else if (ha->cp_stat[i] == FREE) {
2369 printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i,
2372 } else if (ha->cp_stat[i] == IN_RESET)
2373 printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i);
2374 else if (ha->cp_stat[i] != IN_USE)
2375 panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
2376 ha->board_name, i, ha->cp_stat[i]);
2378 ha->cp_stat[i] = FREE;
2382 panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
2384 if (SCpnt->host_scribble == NULL)
2385 panic("%s: ihdlr, mbox %d, SCpnt %p garbled.\n", ha->board_name,
2388 if (*(unsigned int *)SCpnt->host_scribble != i)
2389 panic("%s: ihdlr, mbox %d, index mismatch %d.\n",
2391 *(unsigned int *)SCpnt->host_scribble);
2395 if (linked_comm && SCpnt->device->queue_depth > 2
2396 && TLDEV(SCpnt->device->type))
2397 flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 1);
2399 tstatus = status_byte(spp->target_status);
2401 #if defined(DEBUG_GENERATE_ERRORS)
2402 if ((ha->iocount > 500) && ((ha->iocount % 200) < 2))
2403 spp->adapter_status = 0x01;
2406 switch (spp->adapter_status) {
2407 case ASOK: /* status OK */
2409 /* Forces a reset if a disk drive keeps returning BUSY */
2410 if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
2411 status = DID_ERROR << 16;
2413 /* If there was a bus reset, redo operation on each target */
2414 else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
2415 && ha->target_redo[SCpnt->device->id][SCpnt->
2418 status = DID_BUS_BUSY << 16;
2420 /* Works around a flaw in scsi.c */
2421 else if (tstatus == CHECK_CONDITION
2422 && SCpnt->device->type == TYPE_DISK
2423 && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
2424 status = DID_BUS_BUSY << 16;
2427 status = DID_OK << 16;
2429 if (tstatus == GOOD)
2430 ha->target_redo[SCpnt->device->id][SCpnt->device->
2433 if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
2434 (!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 &&
2435 (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
2436 printk("%s: ihdlr, target %d.%d:%d, "
2437 "target_status 0x%x, sense key 0x%x.\n",
2439 SCpnt->device->channel, SCpnt->device->id,
2440 (u8)SCpnt->device->lun,
2441 spp->target_status, SCpnt->sense_buffer[2]);
2443 ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0;
2445 if (ha->last_retried_pid == SCpnt->serial_number)
2449 case ASST: /* Selection Time Out */
2450 case 0x02: /* Command Time Out */
2452 if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1)
2453 status = DID_ERROR << 16;
2455 status = DID_TIME_OUT << 16;
2456 ha->target_to[SCpnt->device->id][SCpnt->device->
2462 /* Perform a limited number of internal retries */
2463 case 0x03: /* SCSI Bus Reset Received */
2464 case 0x04: /* Initial Controller Power-up */
2466 for (c = 0; c <= shost->max_channel; c++)
2467 for (k = 0; k < shost->max_id; k++)
2468 ha->target_redo[k][c] = 1;
2470 if (SCpnt->device->type != TYPE_TAPE
2471 && ha->retries < MAX_INTERNAL_RETRIES) {
2473 #if defined(DID_SOFT_ERROR)
2474 status = DID_SOFT_ERROR << 16;
2476 status = DID_BUS_BUSY << 16;
2480 ha->last_retried_pid = SCpnt->serial_number;
2482 status = DID_ERROR << 16;
2485 case 0x05: /* Unexpected Bus Phase */
2486 case 0x06: /* Unexpected Bus Free */
2487 case 0x07: /* Bus Parity Error */
2488 case 0x08: /* SCSI Hung */
2489 case 0x09: /* Unexpected Message Reject */
2490 case 0x0a: /* SCSI Bus Reset Stuck */
2491 case 0x0b: /* Auto Request-Sense Failed */
2492 case 0x0c: /* Controller Ram Parity Error */
2494 status = DID_ERROR << 16;
2498 SCpnt->result = status | spp->target_status;
2500 #if defined(DEBUG_INTERRUPT)
2501 if (SCpnt->result || do_trace)
2503 if ((spp->adapter_status != ASOK && ha->iocount > 1000) ||
2504 (spp->adapter_status != ASOK &&
2505 spp->adapter_status != ASST && ha->iocount <= 1000) ||
2506 do_trace || msg_byte(spp->target_status))
2508 scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x,"
2509 " reg 0x%x, count %d.\n",
2510 i, spp->adapter_status, spp->target_status,
2515 /* Set the command state to inactive */
2516 SCpnt->host_scribble = NULL;
2518 SCpnt->scsi_done(SCpnt);
2521 printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name,
2530 static irqreturn_t do_interrupt_handler(int dummy, void *shap)
2532 struct Scsi_Host *shost;
2534 unsigned long spin_flags;
2537 /* Check if the interrupt must be processed by this handler */
2538 if ((j = (unsigned int)((char *)shap - sha)) >= num_boards)
2542 spin_lock_irqsave(shost->host_lock, spin_flags);
2544 spin_unlock_irqrestore(shost->host_lock, spin_flags);
2548 static int eata2x_release(struct Scsi_Host *shost)
2550 struct hostdata *ha = (struct hostdata *)shost->hostdata;
2553 for (i = 0; i < shost->can_queue; i++)
2554 kfree((&ha->cp[i])->sglist);
2556 for (i = 0; i < shost->can_queue; i++)
2557 pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr,
2558 sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
2560 if (ha->sp_cpu_addr)
2561 pci_free_consistent(ha->pdev, sizeof(struct mssp),
2562 ha->sp_cpu_addr, ha->sp_dma_addr);
2564 free_irq(shost->irq, &sha[ha->board_number]);
2566 if (shost->dma_channel != NO_DMA)
2567 free_dma(shost->dma_channel);
2569 release_region(shost->io_port, shost->n_io_port);
2570 scsi_unregister(shost);
2574 #include "scsi_module.c"
2577 __setup("eata=", option_setup);
2578 #endif /* end MODULE */