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Commit 0d9bef55 authored by Linus Torvalds's avatar Linus Torvalds
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Merge master.kernel.org:/home/mingo/BK/linux-2.5 

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
parents 4c63ad73 1a495cba
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Documentation/ide.txt
View file @ 0d9bef55
ide.txt -- Information regarding the Enhanced IDE drive in Linux 2.2/2.3/2.4
===============================================================================
+-----------------------------------------------------------------+
| The hdparm utility for controlling various IDE features is |
| packaged separately. Look for it on popular linux FTP sites. |
+-----------------------------------------------------------------+
See description later on below for handling BIG IDE drives with >1024 cyls.
Major features of the 2.1/2.2 IDE driver ("NEW!" marks changes since 2.0.xx):
NEW! - support for IDE ATAPI *floppy* drives
- support for IDE ATAPI *tape* drives, courtesy of Gadi Oxman
(re-run MAKEDEV.ide to create the tape device entries in /dev/)
- support for up to *four* IDE interfaces on one or more IRQs
- support for any mix of up to *eight* IDE drives
- support for reading IDE ATAPI cdrom drives (NEC,MITSUMI,VERTOS,SONY)
- support for audio functions
- auto-detection of interfaces, drives, IRQs, and disk geometries
- "single" drives should be jumpered as "master", not "slave"
(both are now probed for)
- support for BIOSs which report "more than 16 heads" on disk drives
- uses LBA (slightly faster) on disk drives which support it
- support for lots of fancy (E)IDE drive functions with hdparm utility
- optional (compile time) support for 32-bit VLB data transfers
- support for IDE multiple (block) mode (same as hd.c)
- support for interrupt unmasking during I/O (better than hd.c)
- improved handshaking and error detection/recovery
- can co-exist with hd.c controlling the first interface
- run-time selectable 32bit interface support (using hdparm-2.3)
- support for reliable operation of buggy RZ1000 interfaces
- PCI support is automatic when rz1000 support is configured
- support for reliable operation of buggy CMD-640 interfaces
- PCI support is automatic when cmd640 support is configured
- for VLB, use kernel command line option: ide0=cmd640_vlb
- this support also enables the secondary i/f when needed
- interface PIO timing & prefetch parameter support
- experimental support for UMC 8672 interfaces
- support for secondary interface on the FGI/Holtek HT-6560B VLB i/f
- use kernel command line option: ide0=ht6560b
- experimental support for various IDE chipsets
- use appropriate kernel command line option from list below
- support for drives with a stuck WRERR_STAT bit
- support for removable devices, including door lock/unlock
- transparent support for DiskManager 6.0x and "Dynamic Disk Overlay"
- works with Linux fdisk, LILO, loadlin, bootln, etc..
- mostly transparent support for EZ-Drive disk translation software
- to use LILO with EZ, install LILO on the linux partition
rather than on the master boot record, and then mark the
linux partition as "bootable" or "active" using fdisk.
(courtesy of Juha Laiho <jlaiho@ichaos.nullnet.fi>).
- auto-detect of disk translations by examining partition table
- ide-cd.c now compiles separate from ide.c
- ide-cd.c now supports door locking and auto-loading.
- Also preliminary support for multisession
and direct reads of audio data.
- experimental support for Promise DC4030VL caching interface card
- email thanks/problems to: peterd@pnd-pc.demon.co.uk
- the hdparm-3.1 package can be used to set PIO modes for some chipsets.
NEW! - support for setting PIO modes with the OPTi 82C621, courtesy of Jaromir Koutek.
NEW! - support for loadable modules
NEW! - optional SCSI host adapter emulation for ATAPI devices
NEW! - generic PCI Bus-Master DMA support
NEW! - works with most Pentium PCI systems, chipsets, add-on cards
NEW! - works with regular DMA as well as Ultra DMA
NEW! - automatically probes for all PCI IDE interfaces
NEW! - generic support for using BIOS-configured Ultra-DMA (UDMA) transfers
Information regarding the Enhanced IDE drive in Linux 2.5
==============================================================================
The hdparm utility can be used to controll various IDE features on a
running system. It is packaged separately. Please Look for it on popular
linux FTP sites.
*** IMPORTANT NOTICES: BUGGY IDE CHIPSETS CAN CORRUPT DATA!!
......@@ -92,9 +37,9 @@ NEW! - generic support for using BIOS-configured Ultra-DMA (UDMA) transfers
***
*** Use of the "serialize" option is no longer necessary.
This is the multiple IDE interface driver, as evolved from hd.c.
It supports up to six IDE interfaces, on one or more IRQs (usually 14 & 15).
There can be up to two drives per interface, as per the ATA-2 spec.
This is the multiple IDE interface driver, as evolved from hd.c. It supports
up to 9 IDE interfaces per default, on one or more IRQs (usually 14 & 15).
There can be up to two drives per interface, as per the ATA-6 spec.
Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64
Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
......@@ -103,16 +48,14 @@ Quaternary: ide3, port 0x168; major=34; hdg is minor=0; hdh is minor=64
fifth.. ide4, usually PCI, probed
sixth.. ide5, usually PCI, probed
To access devices on interfaces > ide0, device entries must first be
created in /dev for them. To create such entries, simply run the included
shell script: /usr/src/linux/scripts/MAKEDEV.ide
Apparently many older releases of Slackware had incorrect entries
in /dev for hdc* and hdd* -- this can also be corrected by running MAKEDEV.ide
To access devices on interfaces > ide0, device entries please make sure that
device files for them are present in /dev. If not, please create such
entries, by simply running the included shell script:
/usr/src/linux/scripts/MAKEDEV.ide
ide.c automatically probes for most IDE interfaces (including all PCI ones),
for the drives/geometries attached to those interfaces, and for the
IRQ numbers being used by the interfaces (normally 14, 15 for ide0/ide1).
This driver automatically probes for most IDE interfaces (including all PCI
ones), for the drives/geometries attached to those interfaces, and for the IRQ
lines being used by the interfaces (normally 14, 15 for ide0/ide1).
For special cases, interfaces may be specified using kernel "command line"
options. For example,
......@@ -170,11 +113,11 @@ or
hdc=768,16,32
hdc=noprobe
Note that when only one IDE device is attached to an interface,
it should be jumpered as "single" or "master", *not* "slave".
Many folks have had "trouble" with cdroms because of this requirement,
so ide.c now probes for both units, though success is more likely
when the drive is jumpered correctly.
Note that when only one IDE device is attached to an interface, it should be
jumpered as "single" or "master", *not* "slave". Many folks have had
"trouble" with cdroms because of this requirement, so the driver now probes
for both units, though success is more likely when the drive is jumpered
correctly.
Courtesy of Scott Snyder and others, the driver supports ATAPI cdrom drives
such as the NEC-260 and the new MITSUMI triple/quad speed drives.
......@@ -193,8 +136,8 @@ interface (/dev/hda) and an IDE cdrom drive on the secondary interface
(/dev/hdc). To mount a CD in the cdrom drive, one would use something like:
ln -sf /dev/hdc /dev/cdrom
mkdir /cd
mount /dev/cdrom /cd -t iso9660 -o ro
mkdir /mnt/cdrom
mount /dev/cdrom /mnt/cdrom -t iso9660 -o ro
If, after doing all of the above, mount doesn't work and you see
errors from the driver (with dmesg) complaining about `status=0xff',
......@@ -274,8 +217,6 @@ Summary of ide driver parameters for kernel "command line":
older/odd IDE drives.
"hdx=slow" : insert a huge pause after each access to the data
port. Should be used only as a last resort.
"hdx=swapdata" : when the drive is a disk, byte swap all data
"hdxlun=xx" : set the drive last logical unit
"idebus=xx" : inform IDE driver of VESA/PCI bus speed in MHz,
......@@ -307,8 +248,9 @@ Summary of ide driver parameters for kernel "command line":
"idex=reset" : reset interface after probe
"idex=dma" : automatically configure/use DMA if possible.
The following are valid ONLY on ide0,
and the defaults for the base,ctl ports must not be altered.
The following are valid ONLY on ide0, which usually corresponds to the first
ATA interface found on the particular host, and the defaults for the base,ctl
ports must not be altered.
"ide0=dtc2278" : probe/support DTC2278 interface
"ide0=ht6560b" : probe/support HT6560B interface
......@@ -329,179 +271,21 @@ Some Terminology
IDE = Integrated Drive Electronics, meaning that each drive has a built-in
controller, which is why an "IDE interface card" is not a "controller card".
IDE drives are designed to attach almost directly to the ISA bus of an AT-style
computer. The typical IDE interface card merely provides I/O port address
decoding and tri-state buffers, although several newer localbus cards go much
beyond the basics. When purchasing a localbus IDE interface, avoid cards with
an onboard BIOS and those which require special drivers. Instead, look for a
card which uses hardware switches/jumpers to select the interface timing speed,
to allow much faster data transfers than the original 8MHz ISA bus allows.
ATA = AT (the old IBM 286 computer) Attachment Interface, a draft American
National Standard for connecting hard drives to PCs. This is the official
name for "IDE".
The latest standards define some enhancements, known as the ATA-2 spec,
The latest standards define some enhancements, known as the ATA-6 spec,
which grew out of vendor-specific "Enhanced IDE" (EIDE) implementations.
ATAPI = ATA Packet Interface, a new protocol for controlling the drives,
similar to SCSI protocols, created at the same time as the ATA2 standard.
ATAPI is currently used for controlling CDROM and TAPE devices, and will
likely also soon be used for Floppy drives, removable R/W cartridges,
and for high capacity hard disk drives.
How To Use *Big* ATA/IDE drives with Linux
------------------------------------------
The ATA Interface spec for IDE disk drives allows a total of 28 bits
(8 bits for sector, 16 bits for cylinder, and 4 bits for head) for addressing
individual disk sectors of 512 bytes each (in "Linear Block Address" (LBA)
mode, there is still only a total of 28 bits available in the hardware).
This "limits" the capacity of an IDE drive to no more than 128GB (Giga-bytes).
All current day IDE drives are somewhat smaller than this upper limit, and
within a few years, ATAPI disk drives will raise the limit considerably.
All IDE disk drives "suffer" from a "16-heads" limitation: the hardware has
only a four bit field for head selection, restricting the number of "physical"
heads to 16 or less. Since the BIOS usually has a 63 sectors/track limit,
this means that all IDE drivers larger than 504MB (528Meg) must use a "physical"
geometry with more than 1024 cylinders.
(1024cyls * 16heads * 63sects * 512bytes/sector) / (1024 * 1024) == 504MB
(Some BIOSs (and controllers with onboard BIOS) pretend to allow "32" or "64"
heads per drive (discussed below), but can only do so by playing games with
the real (hidden) geometry, which is always limited to 16 or fewer heads).
This presents two problems to most systems:
1. The INT13 interface to the BIOS only allows 10-bits for cylinder
addresses, giving a limit of 1024cyls for programs which use it.
2. The physical geometry fields of the disk partition table only
allow 10-bits for cylinder addresses, giving a similar limit of 1024
cyls for operating systems that do not use the "sector count" fields
instead of the physical Cyl/Head/Sect (CHS) geometry fields.
Neither of these limitations affects Linux itself, as it (1) does not use the
BIOS for disk access, and it (2) is clever enough to use the "sector count"
fields of the partition table instead of the physical CHS geometry fields.
a) Most folks use LILO to load linux. LILO uses the INT13 interface
to the BIOS to load the kernel at boot time. Therefore, LILO can only
load linux if the files it needs (usually just the kernel images) are
located below the magic 1024 cylinder "boundary" (more on this later).
b) Many folks also like to have bootable DOS partitions on their
drive(s). DOS also uses the INT13 interface to the BIOS, not only
for booting, but also for operation after booting. Therefore, DOS
can normally only access partitions which are contained entirely below
the magic 1024 cylinder "boundary".
There are at least seven commonly used schemes for kludging DOS to work
around this "limitation". In the long term, the problem is being solved
by introduction of an alternative BIOS interface that does not have the
same limitations as the INT13 interface. New versions of DOS are expected
to detect and use this interface in systems whose BIOS provides it.
But in the present day, alternative solutions are necessary.
The most popular solution in newer systems is to have the BIOS shift bits
between the cylinder and head number fields. This is activated by entering
a translated logical geometry into the BIOS/CMOS setup for the drive.
Thus, if the drive has a geometry of 2100/16/63 (CHS), then the BIOS could
present a "logical" geometry of 525/64/63 by "shifting" two bits from the
cylinder number into the head number field for purposes of the partition table,
CMOS setup, and INT13 interfaces. Linux kernels 1.1.39 and higher detect and
"handle" this translation automatically, making this a rather painless solution
for the 1024 cyls problem. If for some reason Linux gets confused (unlikely),
then use the kernel command line parameters to pass the *logical* geometry,
as in: hda=525,64,63
If the BIOS does not support this form of drive translation, then several
options remain, listed below in order of popularity:
- use a partition below the 1024 cyl boundary to hold the linux
boot files (kernel images and /boot directory), and place the rest
of linux anywhere else on the drive. These files can reside in a DOS
partition, or in a tailor-made linux boot partition.
- use DiskManager software from OnTrack, supplied free with
many new hard drive purchases.
- use EZ-Drive software (similar to DiskManager). Note though,
that LILO must *not* use the MBR when EZ-Drive is present.
Instead, install LILO on the first sector of your linux partition,
and mark it as "active" or "bootable" with fdisk.
- boot from a floppy disk instead of the hard drive (takes 10 seconds).
If you cannot use drive translation, *and* your BIOS also restricts you to
entering no more than 1024 cylinders in the geometry field in the CMOS setup,
then just set it to 1024. As of v3.5 of this driver, Linux automatically
determines the *real* number of cylinders for fdisk to use, allowing easy
access to the full disk capacity without having to fiddle around.
Regardless of what you do, all DOS partitions *must* be contained entirely
within the first 1024 logical cylinders. For a 1Gig WD disk drive, here's
a good "half and half" partitioning scheme to start with:
geometry = 2100/16/63
/dev/hda1 from cyl 1 to 992 dos
/dev/hda2 from cyl 993 to 1023 swap
/dev/hda3 from cyl 1024 to 2100 linux
To ensure that LILO can boot linux, the boot files (kernel and /boot/*)
must reside within the first 1024 cylinders of the drive. If your linux
root partition is *not* completely within the first 1024 cyls (quite common),
then you can use LILO to boot linux from files on your DOS partition
by doing the following after installing Slackware (or whatever):
0. Boot from the "boot floppy" created during the installation
1. Mount your DOS partition as /dos (and stick it in /etc/fstab)
2. Move /boot to /dos/boot with: cp -a /boot /dos ; rm -r /boot
3. Create a symlink for LILO to use with: ln -s /dos/boot /boot
4. Move your kernel (/vmlinuz) to /boot/vmlinuz: mv /vmlinuz /boot
5. Edit /etc/lilo.conf to change /vmlinuz to /boot/vmlinuz
6. Re-run LILO with: lilo
A danger with this approach is that whenever an MS-DOS "defragmentation"
program is run (like Norton "speeddisk"), it may move the Linux boot
files around, confusing LILO and making the (Linux) system unbootable.
Be sure to keep a kernel "boot floppy" at hand for such circumstances.
A possible workaround is to mark the Linux files as S+H+R (System,
Hidden, Readonly), to prevent most defragmentation programs from
moving the files around.
If you "don't do DOS", then partition as you please, but remember to create
a small partition to hold the /boot directory (and vmlinuz) as described above
such that they stay within the first 1024 cylinders.
Note that when creating partitions that span beyond cylinder 1024,
Linux fdisk will complain about "Partition X has different physical/logical
endings" and emit messages such as "This is larger than 1024, and may cause
problems with some software". Ignore this for linux partitions. The "some
software" refers to DOS, the BIOS, and LILO, as described previously.
Western Digital ships a "DiskManager 6.03" diskette with all of their big
hard drives. Use BIOS translation instead of this if possible, as it is a
more generally compatible method of achieving the same results (DOS access
to the entire disk). However, if you must use DiskManager, it now works
with Linux 1.3.x in most cases. Let me know if you still have trouble.
My recommendations to anyone who asks about NEW systems are:
- buy a motherboard that uses the Intel Triton chipset -- very common.
- use IDE for the first two drives, placing them on separate interfaces.
- very fast 7200rpm drives are now available
(though many problems have been reported with Seagate ones).
- place the IDE cdrom drive as slave on either interface.
- if additional disks are to be connected, consider your needs:
- fileserver? Buy a SC200 SCSI adaptor for the next few drives.
- personal system? Use IDE for the next two drives.
- still not enough? Keep adding SC200 SCSI cards as needed.
Most manufacturers make both IDE and SCSI versions of each of their drives.
The IDE ones are usually as fast and cheaper, due to lower command overhead
and the higher data transfer speed of UDMA2. But fast/ultrawide/superlative
SCSI is still king of the heap, especially for servers, if you've got the bucks.
ATAPI is currently used for controlling CDROM, TAPE and FLOPPY (ZIP or
LS120/240) devices, removable R/W cartridges, and for high capacity hard disk
drives.
mlord@pobox.com
--
For current maintainers of this stuff, see the linux/MAINTAINERS file.
Wed Apr 17 22:52:44 CEST 2002 edited by Marcin Dalecki
For current maintainers of this stuff, please see the linux/MAINTAINERS file.
arch/cris/drivers/ide.c
View file @ 0d9bef55
......@@ -280,7 +280,7 @@ init_e100_ide (void)
hwif->tuneproc = &tune_e100_ide;
hwif->dmaproc = &e100_dmaproc;
hwif->ata_read = e100_ide_input_data;
hwif->ata_write = e100_ide_input_data;
hwif->ata_write = e100_ide_output_data;
hwif->atapi_read = e100_atapi_read;
hwif->atapi_write = e100_atapi_write;
}
......@@ -560,32 +560,6 @@ e100_ide_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
e100_atapi_write(drive, buffer, wcount << 2);
}
/*
* The multiplexor for ide_xxxput_data and atapi calls
*/
static void
e100_ideproc (ide_ide_action_t func, ide_drive_t *drive,
void *buffer, unsigned int length)
{
switch (func) {
case ideproc_ide_input_data:
e100_ide_input_data(drive, buffer, length);
break;
case ideproc_ide_output_data:
e100_ide_input_data(drive, buffer, length);
break;
case ideproc_atapi_read:
e100_atapi_read(drive, buffer, length);
break;
case ideproc_atapi_write:
e100_atapi_write(drive, buffer, length);
break;
default:
printk("e100_ideproc: unsupported func %d!\n", func);
break;
}
}
/* we only have one DMA channel on the chip for ATA, so we can keep these statically */
static etrax_dma_descr ata_descrs[MAX_DMA_DESCRS];
static unsigned int ata_tot_size;
......
drivers/ide/amd74xx.c
View file @ 0d9bef55
......@@ -422,9 +422,10 @@ void __init ide_init_amd74xx(struct ata_channel *hwif)
hwif->speedproc = &amd_set_drive;
hwif->autodma = 0;
hwif->io_32bit = 1;
hwif->unmask = 1;
for (i = 0; i < 2; i++) {
hwif->drives[i].io_32bit = 1;
hwif->drives[i].unmask = 1;
hwif->drives[i].autotune = 1;
hwif->drives[i].dn = hwif->unit * 2 + i;
}
......
drivers/ide/cmd640.c
View file @ 0d9bef55
......@@ -21,7 +21,7 @@
*
* A.Hartgers@stud.tue.nl, JZDQC@CUNYVM.CUNY.edu, abramov@cecmow.enet.dec.com,
* bardj@utopia.ppp.sn.no, bart@gaga.tue.nl, bbol001@cs.auckland.ac.nz,
* chrisc@dbass.demon.co.uk, dalecki@evision-ventures.com,
* chrisc@dbass.demon.co.uk, martin@dalecki.de,
* derekn@vw.ece.cmu.edu, florian@btp2x3.phy.uni-bayreuth.de,
* flynn@dei.unipd.it, gadio@netvision.net.il, godzilla@futuris.net,
* j@pobox.com, jkemp1@mises.uni-paderborn.de, jtoppe@hiwaay.net,
......@@ -403,19 +403,19 @@ void cmd640_dump_regs (void)
*/
static void __init check_prefetch (unsigned int index)
{
ide_drive_t *drive = cmd_drives[index];
struct ata_device *drive = cmd_drives[index];
byte b = get_cmd640_reg(prefetch_regs[index]);
if (b & prefetch_masks[index]) { /* is prefetch off? */
drive->no_unmask = 0;
drive->no_io_32bit = 1;
drive->io_32bit = 0;
drive->channel->no_unmask = 0;
drive->channel->no_io_32bit = 1;
drive->channel->io_32bit = 0;
} else {
#if CMD640_PREFETCH_MASKS
drive->no_unmask = 1;
drive->unmask = 0;
drive->channel->no_unmask = 1;
drive->channel->unmask = 0;
#endif
drive->no_io_32bit = 0;
drive->channel->no_io_32bit = 0;
}
}
......@@ -460,15 +460,15 @@ static void set_prefetch_mode (unsigned int index, int mode)
b = get_cmd640_reg(reg);
if (mode) { /* want prefetch on? */
#if CMD640_PREFETCH_MASKS
drive->no_unmask = 1;
drive->unmask = 0;
drive->channel->no_unmask = 1;
drive->channel->unmask = 0;
#endif
drive->no_io_32bit = 0;
drive->channel->no_io_32bit = 0;
b &= ~prefetch_masks[index]; /* enable prefetch */
} else {
drive->no_unmask = 0;
drive->no_io_32bit = 1;
drive->io_32bit = 0;
drive->channel->no_unmask = 0;
drive->channel->no_io_32bit = 1;
drive->channel->io_32bit = 0;
b |= prefetch_masks[index]; /* disable prefetch */
}
put_cmd640_reg(reg, b);
......@@ -827,7 +827,7 @@ int __init ide_probe_for_cmd640x(void)
retrieve_drive_counts (index);
check_prefetch (index);
printk("cmd640: drive%d timings/prefetch(%s) preserved",
index, drive->no_io_32bit ? "off" : "on");
index, drive->channel->no_io_32bit ? "off" : "on");
display_clocks(index);
}
#else
......@@ -836,7 +836,7 @@ int __init ide_probe_for_cmd640x(void)
*/
check_prefetch (index);
printk("cmd640: drive%d timings/prefetch(%s) preserved\n",
index, drive->no_io_32bit ? "off" : "on");
index, drive->channel->no_io_32bit ? "off" : "on");
#endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
}
......
drivers/ide/dtc2278.c
View file @ 0d9bef55
......@@ -88,8 +88,7 @@ static void tune_dtc2278 (ide_drive_t *drive, byte pio)
/*
* 32bit I/O has to be enabled for *both* drives at the same time.
*/
drive->io_32bit = 1;
drive->channel->drives[!drive->select.b.unit].io_32bit = 1;
drive->channel->io_32bit = 1;
}
void __init init_dtc2278 (void)
......@@ -120,10 +119,11 @@ void __init init_dtc2278 (void)
ide_hwifs[0].chipset = ide_dtc2278;
ide_hwifs[1].chipset = ide_dtc2278;
ide_hwifs[0].tuneproc = &tune_dtc2278;
ide_hwifs[0].drives[0].no_unmask = 1;
ide_hwifs[0].drives[1].no_unmask = 1;
ide_hwifs[1].drives[0].no_unmask = 1;
ide_hwifs[1].drives[1].no_unmask = 1;
/* FIXME: What about the following?!
ide_hwifs[1].tuneproc = &tune_dtc2278;
*/
ide_hwifs[0].no_unmask = 1;
ide_hwifs[1].no_unmask = 1;
ide_hwifs[0].unit = ATA_PRIMARY;
ide_hwifs[1].unit = ATA_SECONDARY;
}
drivers/ide/ht6560b.c
View file @ 0d9bef55
......@@ -261,11 +261,11 @@ static void ht_set_prefetch(ide_drive_t *drive, byte state)
*/
if (state) {
drive->drive_data |= t; /* enable prefetch mode */
drive->no_unmask = 1;
drive->unmask = 0;
drive->channel->no_unmask = 1;
drive->channel->unmask = 0;
} else {
drive->drive_data &= ~t; /* disable prefetch mode */
drive->no_unmask = 0;
drive->channel->no_unmask = 0;
}
restore_flags (flags); /* all CPUs */
......
drivers/ide/ide-cd.c
View file @ 0d9bef55
......@@ -669,6 +669,12 @@ static int cdrom_decode_status (ide_startstop_t *startstop, ide_drive_t *drive,
request or data protect error.*/
ide_dump_status (drive, "command error", stat);
cdrom_end_request(drive, 0);
} else if (sense_key == MEDIUM_ERROR) {
/* No point in re-trying a zillion times on a bad
* sector. The error is not correctable at all.
*/
ide_dump_status (drive, "media error (bad sector)", stat);
cdrom_end_request(drive, 0);
} else if ((err & ~ABRT_ERR) != 0) {
/* Go to the default handler
for other errors. */
......
drivers/ide/ide-disk.c
View file @ 0d9bef55
......@@ -755,8 +755,6 @@ static void idedisk_pre_reset (ide_drive_t *drive)
drive->special.b.recalibrate = legacy;
if (OK_TO_RESET_CONTROLLER)
drive->mult_count = 0;
if (!drive->keep_settings && !drive->using_dma)
drive->mult_req = 0;
if (drive->mult_req != drive->mult_count)
drive->special.b.set_multmode = 1;
}
......@@ -1231,7 +1229,14 @@ static void idedisk_setup(ide_drive_t *drive)
drive->special.b.set_multmode = 1;
#endif
}
drive->no_io_32bit = id->dword_io ? 1 : 0;
/* FIXME: Nowadays there are many chipsets out there which *require* 32
* bit IO. Those will most propably not work properly with drives not
* supporting this. But right now we don't do anything about this. We
* dont' even *warn* the user!
*/
drive->channel->no_io_32bit = id->dword_io ? 1 : 0;
if (drive->id->cfs_enable_2 & 0x3000)
write_cache(drive, (id->cfs_enable_2 & 0x3000));
......
drivers/ide/ide-dma.c
View file @ 0d9bef55
......@@ -599,13 +599,19 @@ int ide_dmaproc (ide_dma_action_t func, ide_drive_t *drive)
printk("%s: DMA disabled\n", drive->name);
case ide_dma_off_quietly:
set_high = 0;
drive->using_tcq = 0;
outb(inb(dma_base+2) & ~(1<<(5+unit)), dma_base+2);
#ifdef CONFIG_BLK_DEV_IDE_TCQ
hwif->dmaproc(ide_dma_queued_off, drive);
#endif
case ide_dma_on:
ide_toggle_bounce(drive, set_high);
drive->using_dma = (func == ide_dma_on);
if (drive->using_dma)
if (drive->using_dma) {
outb(inb(dma_base+2)|(1<<(5+unit)), dma_base+2);
#ifdef CONFIG_BLK_DEV_IDE_TCQ_DEFAULT
hwif->dmaproc(ide_dma_queued_on, drive);
#endif
}
return 0;
case ide_dma_check:
return config_drive_for_dma (drive);
......
drivers/ide/ide-taskfile.c
View file @ 0d9bef55
......@@ -156,7 +156,7 @@ void ata_read(ide_drive_t *drive, void *buffer, unsigned int wcount)
return;
}
io_32bit = drive->io_32bit;
io_32bit = drive->channel->io_32bit;
if (io_32bit) {
#if SUPPORT_VLB_SYNC
......@@ -167,7 +167,7 @@ void ata_read(ide_drive_t *drive, void *buffer, unsigned int wcount)
ata_read_32(drive, buffer, wcount);
} else {
#if SUPPORT_SLOW_DATA_PORTS
if (drive->slow)
if (drive->channel->slow)
ata_read_slow(drive, buffer, wcount);
else
#endif
......@@ -187,7 +187,7 @@ void ata_write(ide_drive_t *drive, void *buffer, unsigned int wcount)
return;
}
io_32bit = drive->io_32bit;
io_32bit = drive->channel->io_32bit;
if (io_32bit) {
#if SUPPORT_VLB_SYNC
......@@ -198,7 +198,7 @@ void ata_write(ide_drive_t *drive, void *buffer, unsigned int wcount)
ata_write_32(drive, buffer, wcount);
} else {
#if SUPPORT_SLOW_DATA_PORTS
if (drive->slow)
if (drive->channel->slow)
ata_write_slow(drive, buffer, wcount);
else
#endif
......@@ -413,6 +413,20 @@ ide_startstop_t ata_taskfile(ide_drive_t *drive,
struct hd_driveid *id = drive->id;
u8 HIHI = (drive->addressing) ? 0xE0 : 0xEF;
#if 0
printk("ata_taskfile ... %p\n", args->handler);
printk(" sector feature %02x\n", args->taskfile.feature);
printk(" sector count %02x\n", args->taskfile.sector_count);
printk(" drive/head %02x\n", args->taskfile.device_head);
printk(" command %02x\n", args->taskfile.command);
if (rq)
printk(" rq->nr_sectors %2li\n", rq->nr_sectors);
else
printk(" rq-> = null\n");
#endif
/* (ks/hs): Moved to start, do not use for multiple out commands */
if (args->handler != task_mulout_intr) {
if (IDE_CONTROL_REG)
......@@ -577,18 +591,22 @@ static ide_startstop_t task_in_intr (ide_drive_t *drive)
ata_read(drive, pBuf, SECTOR_WORDS);
ide_unmap_rq(rq, pBuf, &flags);
/*
* first segment of the request is complete. note that this does not
* necessarily mean that the entire request is done!! this is only
* true if ide_end_request() returns 0.
*/
if (--rq->current_nr_sectors <= 0) {
/* (hs): swapped next 2 lines */
DTF("Request Ended stat: %02x\n", GET_STAT());
if (ide_end_request(drive, 1)) {
ide_set_handler(drive, &task_in_intr, WAIT_CMD, NULL);
return ide_started;
if (!ide_end_request(drive, 1))
return ide_stopped;
}
} else {
/*
* still data left to transfer
*/
ide_set_handler(drive, &task_in_intr, WAIT_CMD, NULL);
return ide_started;
}
return ide_stopped;
}
static ide_startstop_t pre_task_out_intr(ide_drive_t *drive, struct request *rq)
......@@ -874,7 +892,6 @@ void ide_cmd_type_parser(struct ata_taskfile *args)
return;
case WIN_NOP:
args->command_type = IDE_DRIVE_TASK_NO_DATA;
return;
......@@ -904,11 +921,6 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ata_taskfile *args, byte *buf)
struct ata_request star;
ata_ar_init(drive, &star);
/* Don't put this request on free_req list after usage.
*/
star.ar_flags |= ATA_AR_STATIC;
init_taskfile_request(&rq);
rq.buffer = buf;
......@@ -976,6 +988,7 @@ int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
if (argbuf == NULL)
return -ENOMEM;
memcpy(argbuf, vals, 4);
memset(argbuf + 4, 0, argsize - 4);
}
if (set_transfer(drive, &args)) {
......@@ -986,14 +999,8 @@ int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
/* Issue ATA command and wait for completion.
*/
/* FIXME: Do we really have to zero out the buffer?
*/
memset(argbuf, 4, SECTOR_WORDS * 4 * vals[3]);
ide_init_drive_cmd(&rq);
rq.buffer = argbuf;
memcpy(argbuf, vals, 4);
err = ide_do_drive_cmd(drive, &rq, ide_wait);
if (!err && xfer_rate) {
......
drivers/ide/ide-tcq.c
View file @ 0d9bef55
......@@ -51,21 +51,17 @@
*/
#undef IDE_TCQ_FIDDLE_SI
/*
* wait for data phase before starting DMA or not
*/
#undef IDE_TCQ_WAIT_DATAPHASE
ide_startstop_t ide_dmaq_intr(ide_drive_t *drive);
ide_startstop_t ide_service(ide_drive_t *drive);
static inline void drive_ctl_nien(ide_drive_t *drive, int clear)
{
#ifdef IDE_TCQ_NIEN
if (IDE_CONTROL_REG) {
int mask = clear ? 0x00 : 0x02;
if (IDE_CONTROL_REG)
OUT_BYTE(drive->ctl | mask, IDE_CONTROL_REG);
}
#endif
}
......@@ -123,7 +119,6 @@ static void ide_tcq_invalidate_queue(ide_drive_t *drive)
init_taskfile_request(ar->ar_rq);
ar->ar_rq->rq_dev = mk_kdev(drive->channel->major, (drive->select.b.unit)<<PARTN_BITS);
ar->ar_rq->special = ar;
ar->ar_flags |= ATA_AR_RETURN;
_elv_add_request(q, ar->ar_rq, 0, 0);
/*
......@@ -222,7 +217,7 @@ ide_startstop_t ide_service(ide_drive_t *drive)
{
struct ata_request *ar;
byte feat, stat;
int tag;
int tag, ret;
TCQ_PRINTK("%s: started service\n", drive->name);
......@@ -272,9 +267,6 @@ ide_startstop_t ide_service(ide_drive_t *drive)
return ide_stopped;
}
/*
* start dma
*/
tag = feat >> 3;
IDE_SET_CUR_TAG(drive, tag);
......@@ -293,16 +285,16 @@ ide_startstop_t ide_service(ide_drive_t *drive)
*/
if (rq_data_dir(ar->ar_rq) == READ) {
TCQ_PRINTK("ide_service: starting READ %x\n", stat);
drive->channel->dmaproc(ide_dma_read_queued, drive);
ret = drive->channel->dmaproc(ide_dma_read_queued, drive);
} else {
TCQ_PRINTK("ide_service: starting WRITE %x\n", stat);
drive->channel->dmaproc(ide_dma_write_queued, drive);
ret = drive->channel->dmaproc(ide_dma_write_queued, drive);
}
/*
* dmaproc set intr handler
*/
return ide_started;
return !ret ? ide_started : ide_stopped;
}
ide_startstop_t ide_check_service(ide_drive_t *drive)
......@@ -410,14 +402,15 @@ ide_startstop_t ide_dmaq_intr(ide_drive_t *drive)
*/
static int ide_tcq_configure(ide_drive_t *drive)
{
int tcq_mask = 1 << 1 | 1 << 14;
int tcq_bits = tcq_mask | 1 << 15;
struct ata_taskfile args;
int tcq_supp = 1 << 1 | 1 << 14;
/*
* bit 14 and 1 must be set in word 83 of the device id to indicate
* support for dma queued protocol
* support for dma queued protocol, and bit 15 must be cleared
*/
if ((drive->id->command_set_2 & tcq_supp) != tcq_supp)
if ((drive->id->command_set_2 & tcq_bits) ^ tcq_mask)
return -EIO;
memset(&args, 0, sizeof(args));
......@@ -477,10 +470,13 @@ static int ide_tcq_configure(ide_drive_t *drive)
*/
static int ide_enable_queued(ide_drive_t *drive, int on)
{
int depth = drive->using_tcq ? drive->queue_depth : 0;
/*
* disable or adjust queue depth
*/
if (!on) {
if (drive->using_tcq)
printk("%s: TCQ disabled\n", drive->name);
drive->using_tcq = 0;
return 0;
......@@ -491,25 +487,33 @@ static int ide_enable_queued(ide_drive_t *drive, int on)
return 1;
}
/*
* possibly expand command list
*/
if (ide_build_commandlist(drive))
return 1;
if (depth != drive->queue_depth)
printk("%s: tagged command queueing enabled, command queue depth %d\n", drive->name, drive->queue_depth);
drive->using_tcq = 1;
/*
* clear stats
*/
drive->tcq->max_depth = 0;
return 0;
}
int ide_tcq_wait_dataphase(ide_drive_t *drive)
{
#ifdef IDE_TCQ_WAIT_DATAPHASE
ide_startstop_t foo;
if (ide_wait_stat(&startstop, drive, READY_STAT | DRQ_STAT, BUSY_STAT, WAIT_READY)) {
if (ide_wait_stat(&foo, drive, READY_STAT | DRQ_STAT, BUSY_STAT, WAIT_READY)) {
printk("%s: timeout waiting for data phase\n", drive->name);
return 1;
}
#endif
return 0;
}
......@@ -595,6 +599,8 @@ int ide_tcq_dmaproc(ide_dma_action_t func, ide_drive_t *drive)
if (ide_start_dma(hwif, drive, func))
return ide_stopped;
TCQ_PRINTK("IMMED in queued_start\n");
/*
* need to arm handler before starting dma engine,
* transfer could complete right away
......@@ -612,6 +618,8 @@ int ide_tcq_dmaproc(ide_dma_action_t func, ide_drive_t *drive)
case ide_dma_queued_off:
enable_tcq = 0;
case ide_dma_queued_on:
if (enable_tcq && !drive->using_dma)
return 1;
return ide_enable_queued(drive, enable_tcq);
default:
break;
......
drivers/ide/ide.c
View file @ 0d9bef55
......@@ -479,12 +479,9 @@ static void ata_pre_reset(ide_drive_t *drive)
if (ata_ops(drive) && ata_ops(drive)->pre_reset)
ata_ops(drive)->pre_reset(drive);
if (!drive->keep_settings && !drive->using_dma) {
drive->unmask = 0;
drive->io_32bit = 0;
}
if (!drive->using_dma)
return;
if (drive->using_dma) {
/* check the DMA crc count */
if (drive->crc_count) {
drive->channel->dmaproc(ide_dma_off_quietly, drive);
......@@ -494,7 +491,6 @@ static void ata_pre_reset(ide_drive_t *drive)
drive->channel->dmaproc(ide_dma_on, drive);
} else
drive->channel->dmaproc(ide_dma_off, drive);
}
}
/*
......@@ -807,7 +803,6 @@ void ide_end_drive_cmd(ide_drive_t *drive, byte stat, byte err)
args->hobfile.high_cylinder = IN_BYTE(IDE_HCYL_REG);
}
}
if (ar->ar_flags & ATA_AR_RETURN)
ata_ar_put(drive, ar);
}
......@@ -905,17 +900,15 @@ byte ide_dump_status (ide_drive_t *drive, const char *msg, byte stat)
*/
static void try_to_flush_leftover_data (ide_drive_t *drive)
{
int i = (drive->mult_count ? drive->mult_count : 1);
int i;
if (drive->type != ATA_DISK)
return;
while (i > 0) {
for (i = (drive->mult_count ? drive->mult_count : 1); i > 0; --i) {
u32 buffer[SECTOR_WORDS];
unsigned int count = (i > 1) ? 1 : i;
ata_read(drive, buffer, count * SECTOR_WORDS);
i -= count;
ata_read(drive, buffer, SECTOR_WORDS);
}
}
......@@ -999,7 +992,7 @@ void ide_cmd(ide_drive_t *drive, byte cmd, byte nsect, ide_handler_t *handler)
/*
* Invoked on completion of a special DRIVE_CMD.
*/
static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
static ide_startstop_t drive_cmd_intr(ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
u8 *args = rq->buffer;
......@@ -1008,11 +1001,7 @@ static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
ide__sti(); /* local CPU only */
if ((stat & DRQ_STAT) && args && args[3]) {
int io_32bit = drive->io_32bit;
drive->io_32bit = 0;
ata_read(drive, &args[4], args[3] * SECTOR_WORDS);
drive->io_32bit = io_32bit;
while (((stat = GET_STAT()) & BUSY_STAT) && retries--)
udelay(100);
......@@ -1824,7 +1813,7 @@ void ide_intr(int irq, void *dev_id, struct pt_regs *regs)
del_timer(&hwgroup->timer);
spin_unlock(&ide_lock);
if (drive->unmask)
if (hwif->unmask)
ide__sti(); /* local CPU only */
startstop = handler(drive); /* service this interrupt, may set handler for next interrupt */
spin_lock_irq(&ide_lock);
......@@ -2572,14 +2561,10 @@ int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val)
static int set_io_32bit(struct ata_device *drive, int arg)
{
if (drive->no_io_32bit)
if (drive->channel->no_io_32bit)
return -EIO;
drive->io_32bit = arg;
#ifdef CONFIG_BLK_DEV_DTC2278
if (drive->channel->chipset == ide_dtc2278)
drive->channel->drives[!drive->select.b.unit].io_32bit = arg;
#endif
drive->channel->io_32bit = arg;
return 0;
}
......@@ -2613,11 +2598,10 @@ static int set_pio_mode (ide_drive_t *drive, int arg)
void ide_add_generic_settings (ide_drive_t *drive)
{
/* drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function */
ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit);
ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL);
ide_add_setting(drive, "io_32bit", drive->channel->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->channel->io_32bit, set_io_32bit);
ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode);
ide_add_setting(drive, "slow", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->slow, NULL);
ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL);
ide_add_setting(drive, "slow", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->channel->slow, NULL);
ide_add_setting(drive, "unmaskirq", drive->channel->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->channel->unmask, NULL);
ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma);
ide_add_setting(drive, "ide_scsi", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->scsi, NULL);
ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 69, 1, 1, &drive->init_speed, NULL);
......@@ -3182,7 +3166,7 @@ int __init ide_setup (char *s)
drive->autotune = 2;
goto done;
case -8: /* "slow" */
drive->slow = 1;
hwif->slow = 1;
goto done;
case -9: /* "flash" */
drive->ata_flash = 1;
......
drivers/ide/pdc202xx.c
View file @ 0d9bef55
......@@ -1268,11 +1268,8 @@ void __init ide_init_pdc202xx(struct ata_channel *hwif)
#undef CONFIG_PDC202XX_32_UNMASK
#ifdef CONFIG_PDC202XX_32_UNMASK
hwif->drives[0].io_32bit = 1;
hwif->drives[1].io_32bit = 1;
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
hwif->io_32bit = 1;
hwif->unmask = 1;
#endif
#ifdef CONFIG_BLK_DEV_IDEDMA
......
drivers/ide/pdc4030.c
View file @ 0d9bef55
......@@ -250,11 +250,9 @@ int __init setup_pdc4030(struct ata_channel *hwif)
memcpy(hwif2->io_ports, hwif->hw.io_ports, sizeof(hwif2->io_ports));
hwif2->irq = hwif->irq;
hwif2->hw.irq = hwif->hw.irq = hwif->irq;
hwif->io_32bit = 3;
hwif2->io_32bit = 3;
for (i=0; i<2 ; i++) {
hwif->drives[i].io_32bit = 3;
hwif2->drives[i].io_32bit = 3;
hwif->drives[i].keep_settings = 1;
hwif2->drives[i].keep_settings = 1;
if (!ident.current_tm[i].cyl)
hwif->drives[i].noprobe = 1;
if (!ident.current_tm[i+2].cyl)
......@@ -634,7 +632,7 @@ ide_startstop_t do_pdc4030_io(ide_drive_t *drive, struct ata_taskfile *task)
"PROMISE_WRITE\n", drive->name);
return startstop;
}
if (!drive->unmask)
if (!drive->channel->unmask)
__cli(); /* local CPU only */
HWGROUP(drive)->wrq = *rq; /* scratchpad */
return promise_write(drive);
......
drivers/ide/piix.c
View file @ 0d9bef55
......@@ -545,10 +545,9 @@ void __init ide_init_piix(struct ata_channel *hwif)
hwif->tuneproc = &piix_tune_drive;
hwif->speedproc = &piix_set_drive;
hwif->autodma = 0;
hwif->io_32bit = 1;
hwif->unmask = 1;
for (i = 0; i < 2; i++) {
hwif->drives[i].io_32bit = 1;
hwif->drives[i].unmask = 1;
hwif->drives[i].autotune = 1;
hwif->drives[i].dn = hwif->unit * 2 + i;
}
......
drivers/ide/qd65xx.c
View file @ 0d9bef55
......@@ -370,8 +370,7 @@ int __init probe (int base)
hwif->config_data = config;
hwif->drives[0].drive_data =
hwif->drives[1].drive_data = QD6500_DEF_DATA;
hwif->drives[0].io_32bit =
hwif->drives[1].io_32bit = 1;
hwif->io_32bit = 1;
hwif->tuneproc = &qd6500_tune_drive;
return 1;
}
......@@ -403,8 +402,7 @@ int __init probe (int base)
hwif->config_data = config | (control <<8);
hwif->drives[0].drive_data =
hwif->drives[1].drive_data = QD6580_DEF_DATA;
hwif->drives[0].io_32bit =
hwif->drives[1].io_32bit = 1;
hwif->io_32bit = 1;
hwif->tuneproc = &qd6580_tune_drive;
qd_write_reg(QD_DEF_CONTR,QD_CONTROL_PORT);
......@@ -426,11 +424,11 @@ int __init probe (int base)
ide_hwifs[i].select_data = base;
ide_hwifs[i].config_data = config | (control <<8);
ide_hwifs[i].tuneproc = &qd6580_tune_drive;
ide_hwifs[i].io_32bit = 1;
for (j = 0; j < 2; j++) {
ide_hwifs[i].drives[j].drive_data =
i?QD6580_DEF_DATA2:QD6580_DEF_DATA;
ide_hwifs[i].drives[j].io_32bit = 1;
}
}
......
drivers/ide/rz1000.c
View file @ 0d9bef55
......@@ -40,8 +40,7 @@ void __init ide_init_rz1000(struct ata_channel *hwif) /* called from ide-pci.c *
printk("%s: disabled chipset read-ahead (buggy RZ1000/RZ1001)\n", hwif->name);
} else {
hwif->serialized = 1;
hwif->drives[0].no_unmask = 1;
hwif->drives[1].no_unmask = 1;
hwif->no_unmask = 1;
printk("%s: serialized, disabled unmasking (buggy RZ1000/RZ1001)\n", hwif->name);
}
}
......
drivers/ide/via82cxxx.c
View file @ 0d9bef55
......@@ -535,10 +535,10 @@ void __init ide_init_via82cxxx(struct ata_channel *hwif)
hwif->tuneproc = &via82cxxx_tune_drive;
hwif->speedproc = &via_set_drive;
hwif->autodma = 0;
hwif->io_32bit = 1;
hwif->unmask = (via_config->flags & VIA_NO_UNMASK) ? 0 : 1;
for (i = 0; i < 2; i++) {
hwif->drives[i].io_32bit = 1;
hwif->drives[i].unmask = (via_config->flags & VIA_NO_UNMASK) ? 0 : 1;
hwif->drives[i].autotune = 1;
hwif->drives[i].dn = hwif->unit * 2 + i;
}
......
fs/jfs/jfs_metapage.c
View file @ 0d9bef55
......@@ -91,32 +91,6 @@ static inline void lock_metapage(struct metapage *mp)
__lock_metapage(mp);
}
/* We're currently re-evaluating the method we use to write metadata
* pages. Currently, we have to make sure there no dirty buffer_heads
* hanging around after we free the metadata page, since the same
* physical disk blocks may be used in a different address space and we
* can't write old data over the good data.
*
* The best way to do this now is with block_invalidate_page. However,
* this is only available in the newer kernels and is not exported
* to modules. block_flushpage is the next best, but it too is not exported
* to modules.
*
* In a module, about the best we have is generic_buffer_fdatasync. This
* synchronously writes any dirty buffers. This is not optimal, but it will
* keep old dirty buffers from overwriting newer data.
*/
static inline void invalidate_page(metapage_t *mp)
{
#ifdef MODULE
generic_buffer_fdatasync(mp->mapping->host, mp->index, mp->index + 1);
#else
lock_page(mp->page);
block_flushpage(mp->page, 0);
UnlockPage(mp->page);
#endif
}
int __init metapage_init(void)
{
int i;
......@@ -559,8 +533,11 @@ void release_metapage(metapage_t * mp)
clear_bit(META_sync, &mp->flag);
}
if (test_bit(META_discard, &mp->flag))
invalidate_page(mp);
if (test_bit(META_discard, &mp->flag)) {
lock_page(mp->page);
block_flushpage(mp->page, 0);
UnlockPage(mp->page);
}
page_cache_release(mp->page);
INCREMENT(mpStat.pagefree);
......@@ -593,9 +570,7 @@ void invalidate_metapages(struct inode *ip, unsigned long addr,
int l2BlocksPerPage = PAGE_CACHE_SHIFT - ip->i_sb->s_blocksize_bits;
struct address_space *mapping = ip->i_mapping;
metapage_t *mp;
#ifndef MODULE
struct page *page;
#endif
/*
* First, mark metapages to discard. They will eventually be
......@@ -612,27 +587,14 @@ void invalidate_metapages(struct inode *ip, unsigned long addr,
/*
* If in the metapage cache, we've got the page locked
*/
#ifdef MODULE
UnlockPage(mp->page);
generic_buffer_fdatasync(mp->mapping->host, mp->index,
mp->index+1);
lock_page(mp->page);
#else
block_flushpage(mp->page, 0);
#endif
} else {
spin_unlock(&meta_lock);
#ifdef MODULE
generic_buffer_fdatasync(ip, lblock << l2BlocksPerPage,
(lblock + 1) << l2BlocksPerPage);
#else
page = find_lock_page(mapping,
lblock >> l2BlocksPerPage);
page = find_lock_page(mapping, lblock>>l2BlocksPerPage);
if (page) {
block_flushpage(page, 0);
UnlockPage(page);
}
#endif
}
}
}
......
include/linux/hdreg.h
View file @ 0d9bef55
......@@ -296,7 +296,6 @@ struct hd_big_geometry {
#define HDIO_GET_MULTCOUNT 0x0304 /* get current IDE blockmode setting */
#define HDIO_GET_QDMA 0x0305 /* get use-qdma flag */
#define HDIO_OBSOLETE_IDENTITY 0x0307 /* OBSOLETE, DO NOT USE: returns 142 bytes */
#define HDIO_GET_KEEPSETTINGS 0x0308 /* get keep-settings-on-reset flag */
#define HDIO_GET_32BIT 0x0309 /* get current io_32bit setting */
#define HDIO_GET_NOWERR 0x030a /* get ignore-write-error flag */
#define HDIO_GET_DMA 0x030b /* get use-dma flag */
......@@ -316,7 +315,6 @@ struct hd_big_geometry {
/* hd/ide ctl's that pass (arg) non-ptr values are numbered 0x032n/0x033n */
#define HDIO_SET_MULTCOUNT 0x0321 /* change IDE blockmode */
#define HDIO_SET_UNMASKINTR 0x0322 /* permit other irqs during I/O */
#define HDIO_SET_KEEPSETTINGS 0x0323 /* keep ioctl settings on reset */
#define HDIO_SET_32BIT 0x0324 /* change io_32bit flags */
#define HDIO_SET_NOWERR 0x0325 /* change ignore-write-error flag */
#define HDIO_SET_DMA 0x0326 /* change use-dma flag */
......
include/linux/ide.h
View file @ 0d9bef55
......@@ -342,12 +342,10 @@ struct ata_device {
unsigned long PADAM_timeout; /* max time to wait for irq */
special_t special; /* special action flags */
byte keep_settings; /* restore settings after drive reset */
byte using_dma; /* disk is using dma for read/write */
byte using_tcq; /* disk is using queued dma operations*/
byte retry_pio; /* retrying dma capable host in pio */
byte state; /* retry state */
byte unmask; /* flag: okay to unmask other irqs */
byte dsc_overlap; /* flag: DSC overlap */
unsigned waiting_for_dma: 1; /* dma currently in progress */
......@@ -358,7 +356,6 @@ struct ata_device {
unsigned noprobe : 1; /* from: hdx=noprobe */
unsigned removable : 1; /* 1 if need to do check_media_change */
unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
unsigned no_unmask : 1; /* disallow setting unmask bit */
unsigned nobios : 1; /* flag: do not probe bios for drive */
unsigned revalidate : 1; /* request revalidation */
unsigned atapi_overlap : 1; /* flag: ATAPI overlap (not supported) */
......@@ -388,13 +385,6 @@ struct ata_device {
unsigned long long capacity48; /* total number of sectors */
unsigned int drive_data; /* for use by tuneproc/selectproc as needed */
/* FIXME: Those are properties of a channel and not a drive! Move them
* later there.
*/
byte slow; /* flag: slow data port */
unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
byte io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
wait_queue_head_t wqueue; /* used to wait for drive in open() */
struct hd_driveid *id; /* drive model identification info */
......@@ -523,6 +513,12 @@ struct ata_channel {
unsigned autodma : 1; /* automatically try to enable DMA at boot */
unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */
unsigned highmem : 1; /* can do full 32-bit dma */
byte slow; /* flag: slow data port */
unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
byte io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
unsigned no_unmask : 1; /* disallow setting unmask bit */
byte unmask; /* flag: okay to unmask other irqs */
#if (DISK_RECOVERY_TIME > 0)
unsigned long last_time; /* time when previous rq was done */
#endif
......@@ -972,10 +968,9 @@ extern void revalidate_drives(void);
/*
* ata_request flag bits
*/
#define ATA_AR_QUEUED 1
#define ATA_AR_SETUP 2
#define ATA_AR_RETURN 4
#define ATA_AR_STATIC 8
#define ATA_AR_QUEUED 1 /* was queued */
#define ATA_AR_SETUP 2 /* dma table mapped */
#define ATA_AR_POOL 4 /* originated from drive pool */
/*
* if turn-around time is longer than this, halve queue depth
......@@ -1007,8 +1002,10 @@ static inline struct ata_request *ata_ar_get(ide_drive_t *drive)
if (!list_empty(&drive->free_req)) {
ar = list_ata_entry(drive->free_req.next);
list_del(&ar->ar_queue);
ata_ar_init(drive, ar);
ar->ar_flags |= ATA_AR_POOL;
}
return ar;
......@@ -1016,7 +1013,7 @@ static inline struct ata_request *ata_ar_get(ide_drive_t *drive)
static inline void ata_ar_put(ide_drive_t *drive, struct ata_request *ar)
{
if (!(ar->ar_flags & ATA_AR_STATIC))
if (ar->ar_flags & ATA_AR_POOL)
list_add(&ar->ar_queue, &drive->free_req);
if (ar->ar_flags & ATA_AR_QUEUED) {
......
kernel/ksyms.c
View file @ 0d9bef55
......@@ -211,6 +211,7 @@ EXPORT_SYMBOL(unlock_buffer);
EXPORT_SYMBOL(__wait_on_buffer);
EXPORT_SYMBOL(___wait_on_page);
EXPORT_SYMBOL(generic_direct_IO);
EXPORT_SYMBOL(discard_bh_page);
EXPORT_SYMBOL(block_write_full_page);
EXPORT_SYMBOL(block_read_full_page);
EXPORT_SYMBOL(block_prepare_write);
......
lib/radix-tree.c
View file @ 0d9bef55
......@@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/radix-tree.h>
#include <linux/slab.h>
#include <linux/string.h>
/*
* Radix tree node definition.
......
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