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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# IDE ATA ATAPI Block device driver configuration
3#
4# Andre Hedrick <andre@linux-ide.org>
5#
6
David Howells93614012006-09-30 20:45:40 +02007if BLOCK
8
Linus Torvalds1da177e2005-04-16 15:20:36 -07009menu "ATA/ATAPI/MFM/RLL support"
10
11config IDE
12 tristate "ATA/ATAPI/MFM/RLL support"
13 ---help---
14 If you say Y here, your kernel will be able to manage low cost mass
15 storage units such as ATA/(E)IDE and ATAPI units. The most common
16 cases are IDE hard drives and ATAPI CD-ROM drives.
17
18 If your system is pure SCSI and doesn't use these interfaces, you
19 can say N here.
20
21 Integrated Disk Electronics (IDE aka ATA-1) is a connecting standard
22 for mass storage units such as hard disks. It was designed by
23 Western Digital and Compaq Computer in 1984. It was then named
24 ST506. Quite a number of disks use the IDE interface.
25
26 AT Attachment (ATA) is the superset of the IDE specifications.
27 ST506 was also called ATA-1.
28
29 Fast-IDE is ATA-2 (also named Fast ATA), Enhanced IDE (EIDE) is
30 ATA-3. It provides support for larger disks (up to 8.4GB by means of
31 the LBA standard), more disks (4 instead of 2) and for other mass
32 storage units such as tapes and cdrom. UDMA/33 (aka UltraDMA/33) is
33 ATA-4 and provides faster (and more CPU friendly) transfer modes
34 than previous PIO (Programmed processor Input/Output) from previous
35 ATA/IDE standards by means of fast DMA controllers.
36
37 ATA Packet Interface (ATAPI) is a protocol used by EIDE tape and
38 CD-ROM drives, similar in many respects to the SCSI protocol.
39
40 SMART IDE (Self Monitoring, Analysis and Reporting Technology) was
41 designed in order to prevent data corruption and disk crash by
42 detecting pre hardware failure conditions (heat, access time, and
43 the like...). Disks built since June 1995 may follow this standard.
44 The kernel itself doesn't manage this; however there are quite a
45 number of user programs such as smart that can query the status of
46 SMART parameters from disk drives.
47
48 To compile this driver as a module, choose M here: the
49 module will be called ide.
50
51 For further information, please read <file:Documentation/ide.txt>.
52
53 If unsure, say Y.
54
55if IDE
56
Bjorn Helgaasd57d39c2006-02-03 03:04:53 -080057config IDE_MAX_HWIFS
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 int "Max IDE interfaces"
Matt Mackall83d7dbc2006-10-03 01:14:16 -070059 depends on ALPHA || SUPERH || IA64 || EMBEDDED
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 default 4
61 help
62 This is the maximum number of IDE hardware interfaces that will
63 be supported by the driver. Make sure it is at least as high as
64 the number of IDE interfaces in your system.
65
66config BLK_DEV_IDE
67 tristate "Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support"
68 ---help---
69 If you say Y here, you will use the full-featured IDE driver to
70 control up to ten ATA/IDE interfaces, each being able to serve a
71 "master" and a "slave" device, for a total of up to twenty ATA/IDE
72 disk/cdrom/tape/floppy drives.
73
74 Useful information about large (>540 MB) IDE disks, multiple
75 interfaces, what to do if ATA/IDE devices are not automatically
76 detected, sound card ATA/IDE ports, module support, and other
77 topics, is contained in <file:Documentation/ide.txt>. For detailed
78 information about hard drives, consult the Disk-HOWTO and the
79 Multi-Disk-HOWTO, available from
80 <http://www.tldp.org/docs.html#howto>.
81
82 To fine-tune ATA/IDE drive/interface parameters for improved
83 performance, look for the hdparm package at
84 <ftp://ibiblio.org/pub/Linux/system/hardware/>.
85
86 To compile this driver as a module, choose M here and read
87 <file:Documentation/ide.txt>. The module will be called ide-mod.
88 Do not compile this driver as a module if your root file system (the
89 one containing the directory /) is located on an IDE device.
90
91 If you have one or more IDE drives, say Y or M here. If your system
92 has no IDE drives, or if memory requirements are really tight, you
93 could say N here, and select the "Old hard disk driver" below
94 instead to save about 13 KB of memory in the kernel.
95
96if BLK_DEV_IDE
97
98comment "Please see Documentation/ide.txt for help/info on IDE drives"
99
100config BLK_DEV_IDE_SATA
101 bool "Support for SATA (deprecated; conflicts with libata SATA driver)"
102 default n
103 ---help---
104 There are two drivers for Serial ATA controllers.
105
106 The main driver, "libata", exists inside the SCSI subsystem
107 and supports most modern SATA controllers.
108
109 The IDE driver (which you are currently configuring) supports
110 a few first-generation SATA controllers.
111
112 In order to eliminate conflicts between the two subsystems,
113 this config option enables the IDE driver's SATA support.
114 Normally this is disabled, as it is preferred that libata
115 supports SATA controllers, and this (IDE) driver supports
116 PATA controllers.
117
118 If unsure, say N.
119
120config BLK_DEV_HD_IDE
121 bool "Use old disk-only driver on primary interface"
122 depends on (X86 || SH_MPC1211)
123 ---help---
124 There are two drivers for MFM/RLL/IDE disks. Most people use just
125 the new enhanced driver by itself. This option however installs the
126 old hard disk driver to control the primary IDE/disk interface in
127 the system, leaving the new enhanced IDE driver to take care of only
128 the 2nd/3rd/4th IDE interfaces. Doing this will prevent you from
129 having an IDE/ATAPI CD-ROM or tape drive connected to the primary
130 IDE interface. Choosing this option may be useful for older systems
131 which have MFM/RLL/ESDI controller+drives at the primary port
132 address (0x1f0), along with IDE drives at the secondary/3rd/4th port
133 addresses.
134
135 Normally, just say N here; you will then use the new driver for all
136 4 interfaces.
137
138config BLK_DEV_IDEDISK
139 tristate "Include IDE/ATA-2 DISK support"
140 ---help---
141 This will include enhanced support for MFM/RLL/IDE hard disks. If
142 you have a MFM/RLL/IDE disk, and there is no special reason to use
143 the old hard disk driver instead, say Y. If you have an SCSI-only
144 system, you can say N here.
145
146 To compile this driver as a module, choose M here: the
147 module will be called ide-disk.
148 Do not compile this driver as a module if your root file system
149 (the one containing the directory /) is located on the IDE disk.
150
151 If unsure, say Y.
152
153config IDEDISK_MULTI_MODE
154 bool "Use multi-mode by default"
155 help
156 If you get this error, try to say Y here:
157
158 hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
159 hda: set_multmode: error=0x04 { DriveStatusError }
160
161 If in doubt, say N.
162
163config BLK_DEV_IDECS
164 tristate "PCMCIA IDE support"
165 depends on PCMCIA
166 help
Andreas Mohr3b6ce242006-02-03 03:04:54 -0800167 Support for Compact Flash cards, outboard IDE disks, tape drives,
168 and CD-ROM drives connected through a PCMCIA card.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Mark Lord78281c52007-02-07 18:19:32 +0100170config BLK_DEV_DELKIN
171 tristate "Cardbus IDE support (Delkin/ASKA/Workbit)"
172 depends on CARDBUS && PCI
173 help
174 Support for Delkin, ASKA, and Workbit Cardbus CompactFlash
175 Adapters. This may also work for similar SD and XD adapters.
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177config BLK_DEV_IDECD
178 tristate "Include IDE/ATAPI CDROM support"
179 ---help---
180 If you have a CD-ROM drive using the ATAPI protocol, say Y. ATAPI is
181 a newer protocol used by IDE CD-ROM and TAPE drives, similar to the
182 SCSI protocol. Most new CD-ROM drives use ATAPI, including the
183 NEC-260, Mitsumi FX400, Sony 55E, and just about all non-SCSI
184 double(2X) or better speed drives.
185
186 If you say Y here, the CD-ROM drive will be identified at boot time
187 along with other IDE devices, as "hdb" or "hdc", or something
188 similar (check the boot messages with dmesg). If this is your only
189 CD-ROM drive, you can say N to all other CD-ROM options, but be sure
190 to say Y or M to "ISO 9660 CD-ROM file system support".
191
192 Note that older versions of LILO (LInux LOader) cannot properly deal
193 with IDE/ATAPI CD-ROMs, so install LILO 16 or higher, available from
194 <http://lilo.go.dyndns.org/>.
195
196 To compile this driver as a module, choose M here: the
197 module will be called ide-cd.
198
199config BLK_DEV_IDETAPE
200 tristate "Include IDE/ATAPI TAPE support (EXPERIMENTAL)"
201 depends on EXPERIMENTAL
202 help
203 If you have an IDE tape drive using the ATAPI protocol, say Y.
204 ATAPI is a newer protocol used by IDE tape and CD-ROM drives,
205 similar to the SCSI protocol. If you have an SCSI tape drive
206 however, you can say N here.
207
208 You should also say Y if you have an OnStream DI-30 tape drive; this
209 will not work with the SCSI protocol, until there is support for the
210 SC-30 and SC-50 versions.
211
212 If you say Y here, the tape drive will be identified at boot time
213 along with other IDE devices, as "hdb" or "hdc", or something
214 similar, and will be mapped to a character device such as "ht0"
215 (check the boot messages with dmesg). Be sure to consult the
216 <file:drivers/ide/ide-tape.c> and <file:Documentation/ide.txt> files
217 for usage information.
218
219 To compile this driver as a module, choose M here: the
220 module will be called ide-tape.
221
222config BLK_DEV_IDEFLOPPY
223 tristate "Include IDE/ATAPI FLOPPY support"
224 ---help---
225 If you have an IDE floppy drive which uses the ATAPI protocol,
226 answer Y. ATAPI is a newer protocol used by IDE CD-ROM/tape/floppy
227 drives, similar to the SCSI protocol.
228
229 The LS-120 and the IDE/ATAPI Iomega ZIP drive are also supported by
230 this driver. For information about jumper settings and the question
231 of when a ZIP drive uses a partition table, see
232 <http://www.win.tue.nl/~aeb/linux/zip/zip-1.html>.
233 (ATAPI PD-CD/CDR drives are not supported by this driver; support
234 for PD-CD/CDR drives is available if you answer Y to
235 "SCSI emulation support", below).
236
237 If you say Y here, the FLOPPY drive will be identified along with
238 other IDE devices, as "hdb" or "hdc", or something similar (check
239 the boot messages with dmesg).
240
241 To compile this driver as a module, choose M here: the
242 module will be called ide-floppy.
243
244config BLK_DEV_IDESCSI
245 tristate "SCSI emulation support"
246 depends on SCSI
247 ---help---
248 WARNING: ide-scsi is no longer needed for cd writing applications!
249 The 2.6 kernel supports direct writing to ide-cd, which eliminates
250 the need for ide-scsi + the entire scsi stack just for writing a
251 cd. The new method is more efficient in every way.
252
253 This will provide SCSI host adapter emulation for IDE ATAPI devices,
254 and will allow you to use a SCSI device driver instead of a native
255 ATAPI driver.
256
257 This is useful if you have an ATAPI device for which no native
258 driver has been written (for example, an ATAPI PD-CD drive);
259 you can then use this emulation together with an appropriate SCSI
260 device driver. In order to do this, say Y here and to "SCSI support"
261 and "SCSI generic support", below. You must then provide the kernel
262 command line "hdx=ide-scsi" (try "man bootparam" or see the
263 documentation of your boot loader (lilo or loadlin) about how to
264 pass options to the kernel at boot time) for devices if you want the
265 native EIDE sub-drivers to skip over the native support, so that
266 this SCSI emulation can be used instead.
267
268 Note that this option does NOT allow you to attach SCSI devices to a
269 box that doesn't have a SCSI host adapter installed.
270
271 If both this SCSI emulation and native ATAPI support are compiled
272 into the kernel, the native support will be used.
273
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100274config BLK_DEV_IDEACPI
275 bool "IDE ACPI support"
276 depends on ACPI
277 ---help---
278 Implement ACPI support for generic IDE devices. On modern
279 machines ACPI support is required to properly handle ACPI S3 states.
280
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281config IDE_TASK_IOCTL
282 bool "IDE Taskfile Access"
283 help
284 This is a direct raw access to the media. It is a complex but
285 elegant solution to test and validate the domain of the hardware and
Andreas Mohr3b6ce242006-02-03 03:04:54 -0800286 perform below the driver data recovery if needed. This is the most
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 basic form of media-forensics.
288
289 If you are unsure, say N here.
290
291comment "IDE chipset support/bugfixes"
292
293config IDE_GENERIC
294 tristate "generic/default IDE chipset support"
295 default y
296 help
297 If unsure, say Y.
298
299config BLK_DEV_CMD640
300 bool "CMD640 chipset bugfix/support"
301 depends on X86
302 ---help---
303 The CMD-Technologies CMD640 IDE chip is used on many common 486 and
304 Pentium motherboards, usually in combination with a "Neptune" or
305 "SiS" chipset. Unfortunately, it has a number of rather nasty
306 design flaws that can cause severe data corruption under many common
307 conditions. Say Y here to include code which tries to automatically
308 detect and correct the problems under Linux. This option also
309 enables access to the secondary IDE ports in some CMD640 based
310 systems.
311
312 This driver will work automatically in PCI based systems (most new
313 systems have PCI slots). But if your system uses VESA local bus
314 (VLB) instead of PCI, you must also supply a kernel boot parameter
315 to enable the CMD640 bugfix/support: "ide0=cmd640_vlb". (Try "man
316 bootparam" or see the documentation of your boot loader about how to
317 pass options to the kernel.)
318
319 The CMD640 chip is also used on add-in cards by Acculogic, and on
320 the "CSA-6400E PCI to IDE controller" that some people have. For
321 details, read <file:Documentation/ide.txt>.
322
323config BLK_DEV_CMD640_ENHANCED
324 bool "CMD640 enhanced support"
325 depends on BLK_DEV_CMD640
326 help
327 This option includes support for setting/autotuning PIO modes and
328 prefetch on CMD640 IDE interfaces. For details, read
329 <file:Documentation/ide.txt>. If you have a CMD640 IDE interface
330 and your BIOS does not already do this for you, then say Y here.
331 Otherwise say N.
332
333config BLK_DEV_IDEPNP
334 bool "PNP EIDE support"
335 depends on PNP
336 help
337 If you have a PnP (Plug and Play) compatible EIDE card and
338 would like the kernel to automatically detect and activate
339 it, say Y here.
340
341config BLK_DEV_IDEPCI
342 bool "PCI IDE chipset support" if PCI
343 default BLK_DEV_IDEDMA_PMAC if PPC_PMAC && BLK_DEV_IDEDMA_PMAC
344 help
345 Say Y here for PCI systems which use IDE drive(s).
346 This option helps the IDE driver to automatically detect and
347 configure all PCI-based IDE interfaces in your system.
348
349config IDEPCI_SHARE_IRQ
350 bool "Sharing PCI IDE interrupts support"
351 depends on PCI && BLK_DEV_IDEPCI
352 help
353 Some ATA/IDE chipsets have hardware support which allows for
354 sharing a single IRQ with other cards. To enable support for
355 this in the ATA/IDE driver, say Y here.
356
357 It is safe to say Y to this question, in most cases.
358 If unsure, say N.
359
360config BLK_DEV_OFFBOARD
361 bool "Boot off-board chipsets first support"
362 depends on PCI && BLK_DEV_IDEPCI
363 help
364 Normally, IDE controllers built into the motherboard (on-board
365 controllers) are assigned to ide0 and ide1 while those on add-in PCI
366 cards (off-board controllers) are relegated to ide2 and ide3.
367 Answering Y here will allow you to reverse the situation, with
368 off-board controllers on ide0/1 and on-board controllers on ide2/3.
369 This can improve the usability of some boot managers such as lilo
370 when booting from a drive on an off-board controller.
371
372 If you say Y here, and you actually want to reverse the device scan
373 order as explained above, you also need to issue the kernel command
374 line option "ide=reverse". (Try "man bootparam" or see the
375 documentation of your boot loader (lilo or loadlin) about how to
376 pass options to the kernel at boot time.)
377
378 Note that, if you do this, the order of the hd* devices will be
379 rearranged which may require modification of fstab and other files.
380
381 If in doubt, say N.
382
383config BLK_DEV_GENERIC
384 tristate "Generic PCI IDE Chipset Support"
385 depends on BLK_DEV_IDEPCI
John Daikeredd023d2007-02-17 19:52:10 +0100386 help
387 This option provides generic support for various PCI IDE Chipsets
388 which otherwise might not be supported.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389
390config BLK_DEV_OPTI621
391 tristate "OPTi 82C621 chipset enhanced support (EXPERIMENTAL)"
392 depends on PCI && BLK_DEV_IDEPCI && EXPERIMENTAL
393 help
394 This is a driver for the OPTi 82C621 EIDE controller.
395 Please read the comments at the top of <file:drivers/ide/pci/opti621.c>.
396
397config BLK_DEV_RZ1000
398 tristate "RZ1000 chipset bugfix/support"
399 depends on PCI && BLK_DEV_IDEPCI && X86
400 help
401 The PC-Technologies RZ1000 IDE chip is used on many common 486 and
402 Pentium motherboards, usually along with the "Neptune" chipset.
403 Unfortunately, it has a rather nasty design flaw that can cause
404 severe data corruption under many conditions. Say Y here to include
405 code which automatically detects and corrects the problem under
406 Linux. This may slow disk throughput by a few percent, but at least
407 things will operate 100% reliably.
408
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409config BLK_DEV_IDEDMA_PCI
410 bool "Generic PCI bus-master DMA support"
411 depends on PCI && BLK_DEV_IDEPCI
412 ---help---
413 If your PCI system uses IDE drive(s) (as opposed to SCSI, say) and
414 is capable of bus-master DMA operation (most Pentium PCI systems),
415 you will want to say Y here to reduce CPU overhead. You can then use
416 the "hdparm" utility to enable DMA for drives for which it was not
417 enabled automatically. By default, DMA is not enabled automatically
418 for these drives, but you can change that by saying Y to the
419 following question "Use DMA by default when available". You can get
420 the latest version of the hdparm utility from
421 <ftp://ibiblio.org/pub/Linux/system/hardware/>.
422
423 Read the comments at the beginning of <file:drivers/ide/ide-dma.c>
424 and the file <file:Documentation/ide.txt> for more information.
425
426 It is safe to say Y to this question.
427
428if BLK_DEV_IDEDMA_PCI
429
430config BLK_DEV_IDEDMA_FORCED
431 bool "Force enable legacy 2.0.X HOSTS to use DMA"
432 help
433 This is an old piece of lost code from Linux 2.0 Kernels.
434
435 Generally say N here.
436
437config IDEDMA_PCI_AUTO
438 bool "Use PCI DMA by default when available"
439 ---help---
440 Prior to kernel version 2.1.112, Linux used to automatically use
441 DMA for IDE drives and chipsets which support it. Due to concerns
442 about a couple of cases where buggy hardware may have caused damage,
443 the default is now to NOT use DMA automatically. To revert to the
444 previous behaviour, say Y to this question.
445
446 If you suspect your hardware is at all flakey, say N here.
447 Do NOT email the IDE kernel people regarding this issue!
448
449 It is normally safe to answer Y to this question unless your
450 motherboard uses a VIA VP2 chipset, in which case you should say N.
451
452config IDEDMA_ONLYDISK
453 bool "Enable DMA only for disks "
454 depends on IDEDMA_PCI_AUTO
455 help
456 This is used if you know your ATAPI Devices are going to fail DMA
457 Transfers.
458
459 Generally say N here.
460
461config BLK_DEV_AEC62XX
462 tristate "AEC62XX chipset support"
463 help
464 This driver adds explicit support for Acard AEC62xx (Artop ATP8xx)
465 IDE controllers. This allows the kernel to change PIO, DMA and UDMA
466 speeds and to configure the chip to optimum performance.
467
468config BLK_DEV_ALI15X3
469 tristate "ALI M15x3 chipset support"
470 help
471 This driver ensures (U)DMA support for ALI 1533, 1543 and 1543C
472 onboard chipsets. It also tests for Simplex mode and enables
473 normal dual channel support.
474
475 If you say Y here, you also need to say Y to "Use DMA by default
476 when available", above. Please read the comments at the top of
477 <file:drivers/ide/pci/alim15x3.c>.
478
479 If unsure, say N.
480
481config WDC_ALI15X3
482 bool "ALI M15x3 WDC support (DANGEROUS)"
483 depends on BLK_DEV_ALI15X3
484 ---help---
485 This allows for UltraDMA support for WDC drives that ignore CRC
486 checking. You are a fool for enabling this option, but there have
487 been requests. DO NOT COMPLAIN IF YOUR DRIVE HAS FS CORRUPTION, IF
488 YOU ENABLE THIS! No one will listen, just laugh for ignoring this
489 SERIOUS WARNING.
490
491 Using this option can allow WDC drives to run at ATA-4/5 transfer
492 rates with only an ATA-2 support structure.
493
494 SAY N!
495
496config BLK_DEV_AMD74XX
497 tristate "AMD and nVidia IDE support"
498 help
499 This driver adds explicit support for AMD-7xx and AMD-8111 chips
500 and also for the nVidia nForce chip. This allows the kernel to
501 change PIO, DMA and UDMA speeds and to configure the chip to
502 optimum performance.
503
504config BLK_DEV_ATIIXP
505 tristate "ATI IXP chipset IDE support"
506 depends on X86
507 help
508 This driver adds explicit support for ATI IXP chipset.
509 This allows the kernel to change PIO, DMA and UDMA speeds
510 and to configure the chip to optimum performance.
511
512 Say Y here if you have an ATI IXP chipset IDE controller.
513
514config BLK_DEV_CMD64X
515 tristate "CMD64{3|6|8|9} chipset support"
516 help
517 Say Y here if you have an IDE controller which uses any of these
518 chipsets: CMD643, CMD646, or CMD648.
519
520config BLK_DEV_TRIFLEX
521 tristate "Compaq Triflex IDE support"
522 help
523 Say Y here if you have a Compaq Triflex IDE controller, such
524 as those commonly found on Compaq Pentium-Pro systems
525
526config BLK_DEV_CY82C693
527 tristate "CY82C693 chipset support"
528 help
529 This driver adds detection and support for the CY82C693 chipset
530 used on Digital's PC-Alpha 164SX boards.
531
532 If you say Y here, you need to say Y to "Use DMA by default
533 when available" as well.
534
535config BLK_DEV_CS5520
536 tristate "Cyrix CS5510/20 MediaGX chipset support (VERY EXPERIMENTAL)"
537 depends on EXPERIMENTAL
538 help
Andreas Mohr3b6ce242006-02-03 03:04:54 -0800539 Include support for PIO tuning and virtual DMA on the Cyrix MediaGX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 5510/5520 chipset. This will automatically be detected and
541 configured if found.
542
543 It is safe to say Y to this question.
544
545config BLK_DEV_CS5530
546 tristate "Cyrix/National Semiconductor CS5530 MediaGX chipset support"
547 help
548 Include support for UDMA on the Cyrix MediaGX 5530 chipset. This
549 will automatically be detected and configured if found.
550
551 It is safe to say Y to this question.
552
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100553config BLK_DEV_CS5535
554 tristate "AMD CS5535 chipset support"
555 depends on X86 && !X86_64
556 help
557 Include support for UDMA on the NSC/AMD CS5535 companion chipset.
558 This will automatically be detected and configured if found.
559
560 It is safe to say Y to this question.
561
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562config BLK_DEV_HPT34X
563 tristate "HPT34X chipset support"
564 help
565 This driver adds up to 4 more EIDE devices sharing a single
566 interrupt. The HPT343 chipset in its current form is a non-bootable
567 controller; the HPT345/HPT363 chipset is a bootable (needs BIOS FIX)
568 PCI UDMA controllers. This driver requires dynamic tuning of the
569 chipset during the ide-probe at boot time. It is reported to support
570 DVD II drives, by the manufacturer.
571
572config HPT34X_AUTODMA
573 bool "HPT34X AUTODMA support (EXPERIMENTAL)"
574 depends on BLK_DEV_HPT34X && EXPERIMENTAL
575 help
576 This is a dangerous thing to attempt currently! Please read the
577 comments at the top of <file:drivers/ide/pci/hpt34x.c>. If you say Y
578 here, then say Y to "Use DMA by default when available" as well.
579
580 If unsure, say N.
581
582config BLK_DEV_HPT366
583 tristate "HPT36X/37X chipset support"
584 ---help---
585 HPT366 is an Ultra DMA chipset for ATA-66.
586 HPT368 is an Ultra DMA chipset for ATA-66 RAID Based.
587 HPT370 is an Ultra DMA chipset for ATA-100.
588 HPT372 is an Ultra DMA chipset for ATA-100.
589 HPT374 is an Ultra DMA chipset for ATA-100.
590
591 This driver adds up to 4 more EIDE devices sharing a single
592 interrupt.
593
594 The HPT366 chipset in its current form is bootable. One solution
595 for this problem are special LILO commands for redirecting the
596 reference to device 0x80. The other solution is to say Y to "Boot
597 off-board chipsets first support" (CONFIG_BLK_DEV_OFFBOARD) unless
598 your mother board has the chipset natively mounted. Regardless one
599 should use the fore mentioned option and call at LILO or include
600 "ide=reverse" in LILO's append-line.
601
602 This driver requires dynamic tuning of the chipset during the
603 ide-probe at boot. It is reported to support DVD II drives, by the
604 manufacturer.
605
Alan Coxbbb3bbd2006-10-03 01:14:12 -0700606config BLK_DEV_JMICRON
607 tristate "JMicron JMB36x support"
608 help
609 Basic support for the JMicron ATA controllers. For full support
610 use the libata drivers.
611
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612config BLK_DEV_SC1200
613 tristate "National SCx200 chipset support"
614 help
615 This driver adds support for the built in IDE on the National
616 SCx200 series of embedded x86 "Geode" systems
617
618config BLK_DEV_PIIX
619 tristate "Intel PIIXn chipsets support"
620 help
621 This driver adds explicit support for Intel PIIX and ICH chips
622 and also for the Efar Victory66 (slc90e66) chip. This allows
623 the kernel to change PIO, DMA and UDMA speeds and to configure
624 the chip to optimum performance.
625
Jack Lee9c6712c2007-02-07 18:19:09 +0100626config BLK_DEV_IT8213
627 tristate "IT8213 IDE support"
628 help
629 This driver adds support for the ITE 8213 IDE controller.
630
Alan Coxda9091e2005-06-27 15:24:30 -0700631config BLK_DEV_IT821X
632 tristate "IT821X IDE support"
633 help
634 This driver adds support for the ITE 8211 IDE controller and the
635 IT 8212 IDE RAID controller in both RAID and pass-through mode.
636
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637config BLK_DEV_NS87415
638 tristate "NS87415 chipset support"
639 help
640 This driver adds detection and support for the NS87415 chip
Matthew Wilcox41df8942005-11-18 16:18:40 -0500641 (used mainly on SPARC64 and PA-RISC machines).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
643 Please read the comments at the top of <file:drivers/ide/pci/ns87415.c>.
644
645config BLK_DEV_PDC202XX_OLD
646 tristate "PROMISE PDC202{46|62|65|67} support"
647 help
648 Promise Ultra33 or PDC20246
649 Promise Ultra66 or PDC20262
650 Promise Ultra100 or PDC20265/PDC20267/PDC20268
651
652 This driver adds up to 4 more EIDE devices sharing a single
653 interrupt. This add-on card is a bootable PCI UDMA controller. Since
654 multiple cards can be installed and there are BIOS ROM problems that
655 happen if the BIOS revisions of all installed cards (three-max) do
656 not match, the driver attempts to do dynamic tuning of the chipset
657 at boot-time for max-speed. Ultra33 BIOS 1.25 or newer is required
658 for more than one card. This card may require that you say Y to
659 "Special UDMA Feature".
660
661 If you say Y here, you need to say Y to "Use DMA by default when
662 available" as well.
663
664 Please read the comments at the top of
665 <file:drivers/ide/pci/pdc202xx_old.c>.
666
667 If unsure, say N.
668
669config PDC202XX_BURST
670 bool "Special UDMA Feature"
671 depends on BLK_DEV_PDC202XX_OLD
672 help
673 This option causes the pdc202xx driver to enable UDMA modes on the
674 PDC202xx even when the PDC202xx BIOS has not done so.
675
676 It was originally designed for the PDC20246/Ultra33, whose BIOS will
677 only setup UDMA on the first two PDC20246 cards. It has also been
Andreas Mohr3b6ce242006-02-03 03:04:54 -0800678 used successfully on a PDC20265/Ultra100, allowing use of UDMA modes
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 when the PDC20265 BIOS has been disabled (for faster boot up).
680
681 Please read the comments at the top of
682 <file:drivers/ide/pci/pdc202xx_old.c>.
683
684 If unsure, say N.
685
686config BLK_DEV_PDC202XX_NEW
687 tristate "PROMISE PDC202{68|69|70|71|75|76|77} support"
688
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689config BLK_DEV_SVWKS
690 tristate "ServerWorks OSB4/CSB5/CSB6 chipsets support"
691 help
692 This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
693 chipsets.
694
695config BLK_DEV_SGIIOC4
Brent Casavante5d310b2005-06-21 17:16:01 -0700696 tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
697 depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
Brent Casavant9578bcf2006-07-30 03:03:46 -0700698 select IDEPCI_SHARE_IRQ
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 help
700 This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
701 chipset, which has one channel and can support two devices.
702 Please say Y here if you have an Altix System from SGI.
703
704config BLK_DEV_SIIMAGE
705 tristate "Silicon Image chipset support"
706 help
707 This driver adds PIO/(U)DMA support for the SI CMD680 and SII
708 3112 (Serial ATA) chips.
709
710config BLK_DEV_SIS5513
711 tristate "SiS5513 chipset support"
712 depends on X86
713 ---help---
714 This driver ensures (U)DMA support for SIS5513 chipset family based
715 mainboards.
716
717 The following chipsets are supported:
718 ATA16: SiS5511, SiS5513
719 ATA33: SiS5591, SiS5597, SiS5598, SiS5600
720 ATA66: SiS530, SiS540, SiS620, SiS630, SiS640
721 ATA100: SiS635, SiS645, SiS650, SiS730, SiS735, SiS740,
722 SiS745, SiS750
723
724 If you say Y here, you need to say Y to "Use DMA by default when
725 available" as well.
726
727 Please read the comments at the top of <file:drivers/ide/pci/sis5513.c>.
728
Olaf Hering9468f682006-12-06 20:39:55 -0800729config BLK_DEV_SL82C105
730 tristate "Winbond SL82c105 support"
731 depends on (PPC || ARM)
732 help
733 If you have a Winbond SL82c105 IDE controller, say Y here to enable
734 special configuration for this chip. This is common on various CHRP
735 motherboards, but could be used elsewhere. If in doubt, say Y.
736
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737config BLK_DEV_SLC90E66
738 tristate "SLC90E66 chipset support"
739 help
Andreas Mohr3b6ce242006-02-03 03:04:54 -0800740 This driver ensures (U)DMA support for Victory66 SouthBridges for
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 SMsC with Intel NorthBridges. This is an Ultra66 based chipset.
742 The nice thing about it is that you can mix Ultra/DMA/PIO devices
743 and it will handle timing cycles. Since this is an improved
744 look-a-like to the PIIX4 it should be a nice addition.
745
746 If you say Y here, you need to say Y to "Use DMA by default when
747 available" as well.
748
749 Please read the comments at the top of
750 <file:drivers/ide/pci/slc90e66.c>.
751
752config BLK_DEV_TRM290
753 tristate "Tekram TRM290 chipset support"
754 help
755 This driver adds support for bus master DMA transfers
756 using the Tekram TRM290 PCI IDE chip. Volunteers are
757 needed for further tweaking and development.
758 Please read the comments at the top of <file:drivers/ide/pci/trm290.c>.
759
760config BLK_DEV_VIA82CXXX
761 tristate "VIA82CXXX chipset support"
762 help
763 This driver adds explicit support for VIA BusMastering IDE chips.
764 This allows the kernel to change PIO, DMA and UDMA speeds and to
765 configure the chip to optimum performance.
766
Sergei Shtylyov33dced22007-02-07 18:18:45 +0100767config BLK_DEV_TC86C001
768 tristate "Toshiba TC86C001 support"
769 help
770 This driver adds support for Toshiba TC86C001 GOKU-S chip.
771
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772endif
773
774config BLK_DEV_IDE_PMAC
775 bool "Builtin PowerMac IDE support"
776 depends on PPC_PMAC && IDE=y
777 help
778 This driver provides support for the built-in IDE controller on
779 most of the recent Apple Power Macintoshes and PowerBooks.
780 If unsure, say Y.
781
782config BLK_DEV_IDE_PMAC_ATA100FIRST
783 bool "Probe internal ATA/100 (Kauai) first"
784 depends on BLK_DEV_IDE_PMAC
785 help
786 This option will cause the ATA/100 controller found in UniNorth2
787 based machines (Windtunnel PowerMac, Aluminium PowerBooks, ...)
788 to be probed before the ATA/66 and ATA/33 controllers. Without
789 these, those machine used to have the hard disk on hdc and the
790 CD-ROM on hda. This option changes this to more natural hda for
791 hard disk and hdc for CD-ROM.
792
793config BLK_DEV_IDEDMA_PMAC
794 bool "PowerMac IDE DMA support"
795 depends on BLK_DEV_IDE_PMAC
Juha-Matti Tapio0ac72b32005-08-18 22:13:44 +0200796 select BLK_DEV_IDEDMA_PCI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797 help
798 This option allows the driver for the built-in IDE controller on
799 Power Macintoshes and PowerBooks to use DMA (direct memory access)
800 to transfer data to and from memory. Saying Y is safe and improves
801 performance.
802
Kou Ishizakibde18a22007-02-17 02:40:22 +0100803config BLK_DEV_IDE_CELLEB
804 bool "Toshiba's Cell Reference Set IDE support"
Al Viroa7c99912007-03-14 09:16:34 +0000805 depends on PPC_CELLEB && IDE=y
Kou Ishizakibde18a22007-02-17 02:40:22 +0100806 help
807 This driver provides support for the built-in IDE controller on
808 Toshiba Cell Reference Board.
809 If unsure, say Y.
810
Ralf Baechle4237f222005-11-17 16:23:50 +0000811config BLK_DEV_IDE_SWARM
812 tristate "IDE for Sibyte evaluation boards"
813 depends on SIBYTE_SB1xxx_SOC
814
Pete Popov26a940e2005-09-15 08:03:12 +0000815config BLK_DEV_IDE_AU1XXX
816 bool "IDE for AMD Alchemy Au1200"
817 depends on SOC_AU1200
818choice
819 prompt "IDE Mode for AMD Alchemy Au1200"
820 default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
821 depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
822
823config BLK_DEV_IDE_AU1XXX_PIO_DBDMA
824 bool "PIO+DbDMA IDE for AMD Alchemy Au1200"
825
826config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
827 bool "MDMA2+DbDMA IDE for AMD Alchemy Au1200"
828 depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
829endchoice
830
Pete Popov26a940e2005-09-15 08:03:12 +0000831config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
832 int "Maximum transfer size (KB) per request (up to 128)"
833 default "128"
Robert P. J. Daybef1f402006-12-12 20:04:19 +0100834 depends on BLK_DEV_IDE_AU1XXX
Pete Popov26a940e2005-09-15 08:03:12 +0000835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836config IDE_ARM
837 def_bool ARM && (ARCH_A5K || ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
838
839config BLK_DEV_IDE_ICSIDE
840 tristate "ICS IDE interface support"
841 depends on ARM && ARCH_ACORN
842 help
843 On Acorn systems, say Y here if you wish to use the ICS IDE
844 interface card. This is not required for ICS partition support.
845 If you are unsure, say N to this.
846
847config BLK_DEV_IDEDMA_ICS
848 bool "ICS DMA support"
849 depends on BLK_DEV_IDE_ICSIDE
850 help
851 Say Y here if you want to add DMA (Direct Memory Access) support to
852 the ICS IDE driver.
853
854config IDEDMA_ICS_AUTO
855 bool "Use ICS DMA by default"
856 depends on BLK_DEV_IDEDMA_ICS
857 help
858 Prior to kernel version 2.1.112, Linux used to automatically use
859 DMA for IDE drives and chipsets which support it. Due to concerns
860 about a couple of cases where buggy hardware may have caused damage,
861 the default is now to NOT use DMA automatically. To revert to the
862 previous behaviour, say Y to this question.
863
864 If you suspect your hardware is at all flakey, say N here.
865 Do NOT email the IDE kernel people regarding this issue!
866
867config BLK_DEV_IDE_RAPIDE
868 tristate "RapIDE interface support"
869 depends on ARM && ARCH_ACORN
870 help
871 Say Y here if you want to support the Yellowstone RapIDE controller
872 manufactured for use with Acorn computers.
873
874config BLK_DEV_IDE_BAST
875 tristate "Simtec BAST / Thorcom VR1000 IDE support"
876 depends on ARM && (ARCH_BAST || MACH_VR1000)
877 help
878 Say Y here if you want to support the onboard IDE channels on the
879 Simtec BAST or the Thorcom VR1000
880
881config BLK_DEV_GAYLE
882 bool "Amiga Gayle IDE interface support"
883 depends on AMIGA
884 help
885 This is the IDE driver for the Amiga Gayle IDE interface. It supports
886 both the `A1200 style' and `A4000 style' of the Gayle IDE interface,
887 This includes builtin IDE interfaces on some Amiga models (A600,
888 A1200, A4000, and A4000T), and IDE interfaces on the Zorro expansion
889 bus (M-Tech E-Matrix 530 expansion card).
890 Say Y if you have an Amiga with a Gayle IDE interface and want to use
891 IDE devices (hard disks, CD-ROM drives, etc.) that are connected to
892 it.
893 Note that you also have to enable Zorro bus support if you want to
894 use Gayle IDE interfaces on the Zorro expansion bus.
895
896config BLK_DEV_IDEDOUBLER
897 bool "Amiga IDE Doubler support (EXPERIMENTAL)"
898 depends on BLK_DEV_GAYLE && EXPERIMENTAL
899 ---help---
900 This driver provides support for the so-called `IDE doublers' (made
901 by various manufacturers, e.g. Eyetech) that can be connected to the
902 builtin IDE interface of some Amiga models. Using such an IDE
903 doubler, you can connect up to four instead of two IDE devices on
904 the Amiga's builtin IDE interface.
905
906 Note that the normal Amiga Gayle IDE driver may not work correctly
907 if you have an IDE doubler and don't enable this driver!
908
909 Say Y if you have an IDE doubler. The driver is enabled at kernel
910 runtime using the "ide=doubler" kernel boot parameter.
911
912config BLK_DEV_BUDDHA
913 bool "Buddha/Catweasel/X-Surf IDE interface support (EXPERIMENTAL)"
914 depends on ZORRO && EXPERIMENTAL
915 help
916 This is the IDE driver for the IDE interfaces on the Buddha,
917 Catweasel and X-Surf expansion boards. It supports up to two interfaces
918 on the Buddha, three on the Catweasel and two on the X-Surf.
919
920 Say Y if you have a Buddha or Catweasel expansion board and want to
921 use IDE devices (hard disks, CD-ROM drives, etc.) that are connected
922 to one of its IDE interfaces.
923
924config BLK_DEV_FALCON_IDE
925 bool "Falcon IDE interface support"
926 depends on ATARI
927 help
928 This is the IDE driver for the builtin IDE interface on the Atari
929 Falcon. Say Y if you have a Falcon and want to use IDE devices (hard
930 disks, CD-ROM drives, etc.) that are connected to the builtin IDE
931 interface.
932
933config BLK_DEV_MAC_IDE
934 bool "Macintosh Quadra/Powerbook IDE interface support"
935 depends on MAC
936 help
937 This is the IDE driver for the builtin IDE interface on some m68k
938 Macintosh models. It supports both the `Quadra style' (used in
939 Quadra/ Centris 630 and Performa 588 models) and `Powerbook style'
940 (used in the Powerbook 150 and 190 models) IDE interface.
941
942 Say Y if you have such an Macintosh model and want to use IDE
943 devices (hard disks, CD-ROM drives, etc.) that are connected to the
944 builtin IDE interface.
945
946config BLK_DEV_Q40IDE
947 bool "Q40/Q60 IDE interface support"
948 depends on Q40
949 help
950 Enable the on-board IDE controller in the Q40/Q60. This should
951 normally be on; disable it only if you are running a custom hard
952 drive subsystem through an expansion card.
953
954config BLK_DEV_MPC8xx_IDE
955 bool "MPC8xx IDE support"
Marcelo Tosatti38f9d412005-12-15 02:12:53 +0100956 depends on 8xx && IDE=y && BLK_DEV_IDE=y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 help
958 This option provides support for IDE on Motorola MPC8xx Systems.
959 Please see 'Type of MPC8xx IDE interface' for details.
960
961 If unsure, say N.
962
963choice
964 prompt "Type of MPC8xx IDE interface"
965 depends on BLK_DEV_MPC8xx_IDE
966 default IDE_8xx_PCCARD
967
968config IDE_8xx_PCCARD
969 bool "8xx_PCCARD"
970 ---help---
971 Select how the IDE devices are connected to the MPC8xx system:
972
973 8xx_PCCARD uses the 8xx internal PCMCIA interface in combination
974 with a PC Card (e.g. ARGOSY portable Hard Disk Adapter),
975 ATA PC Card HDDs or ATA PC Flash Cards (example: TQM8xxL
976 systems)
977
978 8xx_DIRECT is used for directly connected IDE devices using the 8xx
979 internal PCMCIA interface (example: IVMS8 systems)
980
981 EXT_DIRECT is used for IDE devices directly connected to the 8xx
982 bus using some glue logic, but _not_ the 8xx internal
983 PCMCIA interface (example: IDIF860 systems)
984
985config IDE_8xx_DIRECT
986 bool "8xx_DIRECT"
987
988config IDE_EXT_DIRECT
989 bool "EXT_DIRECT"
990
991endchoice
992
993# no isa -> no vlb
994config IDE_CHIPSETS
995 bool "Other IDE chipset support"
996 depends on ISA
997 ---help---
998 Say Y here if you want to include enhanced support for various IDE
999 interface chipsets used on motherboards and add-on cards. You can
1000 then pick your particular IDE chip from among the following options.
1001 This enhanced support may be necessary for Linux to be able to
1002 access the 3rd/4th drives in some systems. It may also enable
1003 setting of higher speed I/O rates to improve system performance with
1004 these chipsets. Most of these also require special kernel boot
1005 parameters to actually turn on the support at runtime; you can find
1006 a list of these in the file <file:Documentation/ide.txt>.
1007
1008 People with SCSI-only systems can say N here.
1009
1010if IDE_CHIPSETS
1011
1012comment "Note: most of these also require special kernel boot parameters"
1013
1014config BLK_DEV_4DRIVES
1015 bool "Generic 4 drives/port support"
1016 help
1017 Certain older chipsets, including the Tekram 690CD, use a single set
1018 of I/O ports at 0x1f0 to control up to four drives, instead of the
1019 customary two drives per port. Support for this can be enabled at
1020 runtime using the "ide0=four" kernel boot parameter if you say Y
1021 here.
1022
1023config BLK_DEV_ALI14XX
1024 tristate "ALI M14xx support"
1025 help
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001026 This driver is enabled at runtime using the "ali14xx.probe" kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 boot parameter. It enables support for the secondary IDE interface
1028 of the ALI M1439/1443/1445/1487/1489 chipsets, and permits faster
1029 I/O speeds to be set as well. See the files
1030 <file:Documentation/ide.txt> and <file:drivers/ide/legacy/ali14xx.c> for
1031 more info.
1032
1033config BLK_DEV_DTC2278
1034 tristate "DTC-2278 support"
1035 help
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001036 This driver is enabled at runtime using the "dtc2278.probe" kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 boot parameter. It enables support for the secondary IDE interface
1038 of the DTC-2278 card, and permits faster I/O speeds to be set as
1039 well. See the <file:Documentation/ide.txt> and
1040 <file:drivers/ide/legacy/dtc2278.c> files for more info.
1041
1042config BLK_DEV_HT6560B
1043 tristate "Holtek HT6560B support"
1044 help
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001045 This driver is enabled at runtime using the "ht6560b.probe" kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046 boot parameter. It enables support for the secondary IDE interface
1047 of the Holtek card, and permits faster I/O speeds to be set as well.
1048 See the <file:Documentation/ide.txt> and
1049 <file:drivers/ide/legacy/ht6560b.c> files for more info.
1050
1051config BLK_DEV_QD65XX
1052 tristate "QDI QD65xx support"
1053 help
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001054 This driver is enabled at runtime using the "qd65xx.probe" kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 boot parameter. It permits faster I/O speeds to be set. See the
1056 <file:Documentation/ide.txt> and <file:drivers/ide/legacy/qd65xx.c> for
1057 more info.
1058
1059config BLK_DEV_UMC8672
1060 tristate "UMC-8672 support"
1061 help
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001062 This driver is enabled at runtime using the "umc8672.probe" kernel
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 boot parameter. It enables support for the secondary IDE interface
1064 of the UMC-8672, and permits faster I/O speeds to be set as well.
1065 See the files <file:Documentation/ide.txt> and
1066 <file:drivers/ide/legacy/umc8672.c> for more info.
1067
1068endif
1069
1070config BLK_DEV_IDEDMA
Pete Popov26a940e2005-09-15 08:03:12 +00001071 def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072
1073config IDEDMA_IVB
1074 bool "IGNORE word93 Validation BITS"
1075 depends on BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS
1076 ---help---
1077 There are unclear terms in ATA-4 and ATA-5 standards how certain
1078 hardware (an 80c ribbon) should be detected. Different interpretations
1079 of the standards have been released in hardware. This causes problems:
1080 for example, a host with Ultra Mode 4 (or higher) will not run
1081 in that mode with an 80c ribbon.
1082
1083 If you are experiencing compatibility or performance problems, you
Andreas Mohr3b6ce242006-02-03 03:04:54 -08001084 MAY try to answer Y here. However, it does not necessarily solve
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 any of your problems, it could even cause more of them.
1086
1087 It is normally safe to answer Y; however, the default is N.
1088
1089config IDEDMA_AUTO
1090 def_bool IDEDMA_PCI_AUTO || IDEDMA_ICS_AUTO
1091
1092endif
1093
1094config BLK_DEV_HD_ONLY
1095 bool "Old hard disk (MFM/RLL/IDE) driver"
1096 depends on BLK_DEV_IDE=n
1097 help
1098 There are two drivers for MFM/RLL/IDE hard disks. Most people use
1099 the newer enhanced driver, but this old one is still around for two
1100 reasons. Some older systems have strange timing problems and seem to
1101 work only with the old driver (which itself does not work with some
1102 newer systems). The other reason is that the old driver is smaller,
1103 since it lacks the enhanced functionality of the new one. This makes
1104 it a good choice for systems with very tight memory restrictions, or
1105 for systems with only older MFM/RLL/ESDI drives. Choosing the old
1106 driver can save 13 KB or so of kernel memory.
1107
1108 If you are unsure, then just choose the Enhanced IDE/MFM/RLL driver
1109 instead of this one. For more detailed information, read the
1110 Disk-HOWTO, available from
1111 <http://www.tldp.org/docs.html#howto>.
1112
1113config BLK_DEV_HD
1114 def_bool BLK_DEV_HD_IDE || BLK_DEV_HD_ONLY
1115
1116endif
1117
1118endmenu
David Howells93614012006-09-30 20:45:40 +02001119
1120endif