Commit Graph

272 Commits

Author SHA1 Message Date
Greg Kroah-Hartman fcb5207723 ide: remove driver_data direct access of struct device
In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: linux-ide@vger.kernel.org
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15 21:30:26 -07:00
Hugh Dickins 5f4417a156 ide: fix PowerMac bootup oops
PowerMac bootup with CONFIG_IDE=y oopses in ide_pio_cycle_time():
because "ide: try to use PIO Mode 0 during probe if possible" causes
pmac_ide_set_pio_mode() to be called before drive->id has been set.

Bart points out other places which now need drive->id set earlier,
so follow his advice to allocate it in ide_port_alloc_devices()
(using kzalloc_node, without error message, as when allocating drive)
and memset it for reuse in ide_port_init_devices_data().

Fixed in passing: ide_host_alloc() was missing ide_port_free_devices()
from an error path.

Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Joao Ramos <joao.ramos@inov.pt>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-06-10 14:37:20 +02:00
Bartlomiej Zolnierkiewicz a20b2a44ec ide: skip probe if there are no devices on the port (v2)
In ide_probe_port() skip probe if ide_port_wait_ready() returns -ENODEV
and print error message instead of debug one if it returns -EBUSY.

v2:
Fix the default 'rc' value.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-06-08 22:07:28 +02:00
Bartlomiej Zolnierkiewicz 8bc1e5aa06 ide: respect quirk_drives[] list on all controllers
* Add ide_check_nien_quirk_list() helper to the core code
  and then use it in ide_port_tune_devices().

* Remove no longer needed ->quirkproc methods from hpt366.c
  and pdc202xx_{new,old}.c.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-06-07 15:37:09 +02:00
Bartlomiej Zolnierkiewicz 4c9773ed79 Merge branch 'for-linus' into for-next 2009-05-22 17:10:55 +02:00
Bartlomiej Zolnierkiewicz 28ee9bc5cc ide: report timeouts in ide_busy_sleep()
* change 'hwif' argument to 'drive'
* report an error on timeout

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-22 16:23:38 +02:00
Bartlomiej Zolnierkiewicz 9f36d31437 ide: remove hw_regs_t typedef
Remove hw_regs_t typedef and rename struct hw_regs_s to struct ide_hw.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-17 19:12:25 +02:00
Bartlomiej Zolnierkiewicz dca3983059 ide: pass number of ports to ide_host_{alloc,add}() (v2)
Pass number of ports to ide_host_{alloc,add}() and then update
all users accordingly.

v2:
- drop no longer needed NULL initializers in buddha.c, cmd640.c and gayle.c
  (noticed by Sergei)

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-17 19:12:24 +02:00
Bartlomiej Zolnierkiewicz 29e52cf793 ide: remove chipset field from hw_regs_t
* Convert host drivers that still use hw_regs_t's chipset field to use
  the one in struct ide_port_info instead.

* Move special handling of ide_pci chipset type from ide_hw_configure()
  to ide_init_port().

* Remove chipset field from hw_regs_t.

While at it:
- remove stale comment in delkin_cb.c

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-17 19:12:22 +02:00
Bartlomiej Zolnierkiewicz ca1b96e00a ide: replace special_t typedef by IDE_SFLAG_* flags
Replace:
- special_t typedef by IDE_SFLAG_* flags
- 'special_t special' ide_drive_t's field by 'u8 special_flags' one

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-17 19:12:21 +02:00
Joao Ramos 6029336426 ide: try to use PIO Mode 0 during probe if possible
Initially set PIO Mode 0 for all host drivers that have a 'set_pio_mode'
method before the IDE core figures out the most suited PIO mode for the
attached device.

Signed-off-by: Joao Ramos <joao.ramos@inov.pt>
Cc: Sergei Shtylyov <sshtylyov@ru.montavista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-17 17:22:54 +02:00
Sergei Shtylyov 3153c26b54 ide: refactor tf_read() method
Simplify tf_read() method, making it deal only with 'struct ide_taskfile' and
the validity flags that the upper layer passes, and factoring out the code that
deals with the high order bytes into ide_tf_readback() to be called from the
only two functions interested, ide_complete_cmd() and ide_dump_sector().

This should stop the needless code duplication in this method and so make
it about twice smaller than it was; along with simplifying the setup for
the method call, this should save both time and space...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:03 +02:00
Sergei Shtylyov c9ff9e7b64 ide: refactor tf_load() method
Simplify tf_load() method, making it deal only with 'struct ide_taskfile' and
the validity flags that the upper layer passes, and moving the code that deals
with the high order bytes into the only function interested, do_rw_taskfile().

This should stop the needless code duplication in this method and so make
it about twice smaller than it was; along with simplifying the setup for the
method call, this should save both time and space...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:03 +02:00
Sergei Shtylyov 60f85019c6 ide: replace IDE_TFLAG_* flags by IDE_VALID_*
Replace IDE_TFLAG_{IN|OUT}_* flags meaning to the taskfile register validity on
input/output by the IDE_VALID_* flags and introduce 4 symmetric 8-bit register
validity indicator subfields, 'valid.{input/output}.{tf|hob}', into the 'struct
ide_cmd' instead of using the 'tf_flags' field for that purpose (this field can
then be turned from 32-bit into 8-bit one).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:01 +02:00
Geert Uytterhoeven aa07573b2b ide: Fix host drivers that need IRQF_SHARED
commit 255115fb35 ("ide: allow host drivers to
specify IRQ flags") added irq_flags fields to struct ide_port_info and struct
ide_host.  Drivers can now set ide_port_info.irq_flags = IRQF_SHARED, while
init_irq() passes ide_host.irq_flags to request_irq().

Unfortunately ide_host.irq_flags is never set, causing (on ARAnyM):

| Uniform Multi-Platform E-IDE driver
| ide: Falcon IDE controller
| Probing IDE interface ide0...
| hda: Sarge m68k, ATA DISK drive
| init_irq: sa = 0
| ide0: disabled, unable to get IRQ 15
| ide0: failed to initialize IDE interface
| ide0: disabling port

Solve this by copying ide_port_info.irq_flags to ide_host.irq_flags in
ide_host_alloc().

This bug probably affects the following IDE host drivers:
  - buddha
  - delkin_cb
  - falconide
  - gayle
  - ide-cs
  - macide
  - q40ide
  - scc_pata
  - sgiioc4

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:47 +02:00
Sergei Shtylyov fdd88f0af6 ide: inline SELECT_DRIVE()
Since SELECT_DRIVE() has boiled down to a mere dev_select() method call, it now
makes sense to just inline it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:33 +02:00
Sergei Shtylyov ecf3a31d2a ide: turn set_irq() method into write_devctl() method
Turn set_irq() method with its software reset hack into write_devctl() method
(for just writing a value into the device control register) at last...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:30 +02:00
Bartlomiej Zolnierkiewicz b5479167f4 ide: fix locking in drive_release_dev()
* Request queue cleanup should happen before freeing drive->id
  and marking device as non-present.  Fix it.

* Remove superfluous hwif->lock acquiring/releasing.

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:25 +02:00
Bartlomiej Zolnierkiewicz 22aa4b32a1 ide: remove ide_task_t typedef
While at it:
- rename struct ide_task_s to struct ide_cmd
- remove stale comments from idedisk_{read_native,set}_max_address()
- drop unused 'cmd' argument from ide_{cmd,task}_ioctl()
- drop unused 'task' argument from tx4939ide_tf_load_fixup()
- rename ide_complete_task() to ide_complete_cmd()
- use consistent naming for struct ide_cmd variables

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:37 +01:00
Bartlomiej Zolnierkiewicz c094ea0774 ide: add IDE_HFLAG_4DRIVES host flag
Add IDE_HFLAG_4DRIVES host flag and use it instead of ide_4drives
chipset type in ide_init_port().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:28 +01:00
Bartlomiej Zolnierkiewicz 2787cb8ae5 ide: add IDE_HFLAG_DTC2278 host flag
Add IDE_HFLAG_DTC2278 host flag and use it instead of ide_dtc2278
chipset type in ide_init_port().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:28 +01:00
Bartlomiej Zolnierkiewicz 0a6e49e9bc ide: remove now superfluous check from ide_host_register()
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:27 +01:00
Bartlomiej Zolnierkiewicz 255115fb35 ide: allow host drivers to specify IRQ flags
* Add ->irq_flags field to struct ide_port_info and struct ide_host.

* Update host drivers and IDE PCI code to use ->irq_flags field.

* Convert init_irq() and ide_intr() to use host->irq_flags.

This fixes handling of shared IRQs for non-PCI hosts
and removes ugly ifdeffery from core IDE code.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:27 +01:00
Bartlomiej Zolnierkiewicz 69197ad70e ide: fix memleak on failure in probe_for_drive()
Always free drive->id in probe_for_drive() if device is not present.

While at it:
- remove dead IDE_DFLAG_DEAD flag
- remove superfluous IDE_DFLAG_PRESENT check

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:26 +01:00
Bartlomiej Zolnierkiewicz e354c1d803 ide: remove IDE_ARCH_LOCK (v2)
* Add ->{get,release}_lock methods to struct ide_port_info
  and struct ide_host.

* Convert core IDE code, m68k IDE code and falconide support to use
  ->{get,release}_lock methods instead of ide_{get,release}_lock().

* Remove IDE_ARCH_LOCK.

v2:
* Build fix from Geert updating ide_{get,release}_lock() callers in
  falconide.c.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:22 +01:00
Bartlomiej Zolnierkiewicz 70775e9c62 ide: move ->rqsize init from init_irq() to ide_init_port()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:18 +01:00
Bartlomiej Zolnierkiewicz 2ebe1d9efe ide: use try_to_identify() in ide_driveid_update()
* Pass pointer to buffer for IDENTIFY data to do_identify()
  and try_to_identify().

* Un-static try_to_identify() and use it in ide_driveid_update().

* Rename try_to_identify() to ide_dev_read_id().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:59 +01:00
Bartlomiej Zolnierkiewicz 1bd4c1f4fe ide: classify device type in do_probe()
Defer classifying device type from do_identify() to do_probe().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz 552d3a99bd ide: remove broken EXABYTENEST support
do_identify() marks EXABYTENEST device as non-present and frees
drive->id so enable_nest() has absolutely no chance of working.

The code was like this since at least 2.6.12-rc2 and nobody
has noticed so just remove broken EXABYTENEST support.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz a182807a89 ide: remove try_to_identify() wrapper
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz f77e03c68f ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)
v2:
Update actual_try_to_identify() documentation.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz 8b07ed26f8 ide: remove no longer needed IRQ fallback code from hwif_init()
Then remove no longer used __ide_default_irq().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:52 +01:00
Bartlomiej Zolnierkiewicz 80d15a607a ide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()
Move handling of IDE_HFLAG[_FORCE]_LEGACY_IRQS from ide_init_port()
to ide_pci_init_{one,two}().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:49 +01:00
Bartlomiej Zolnierkiewicz 8b803bd184 ide: sanitize ACPI initialization
* ide_acpi_init() -> ide_acpi_init_port()

* ide_acpi_blacklist() -> ide_acpi_init()

* Call ide_acpi_init() only once (do it during IDE core
  initialization) and cleanup the function accordingly.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 7ed5b157d9 ide: add ide_for_each_present_dev() iterator
* Add ide_for_each_present_dev() iterator and convert IDE code to use it.

* Do some drive-by CodingStyle fixups in ide-acpi.c while at it.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 0688d3a6ba ide: init_irq() doesn't need to hold ide_cfg_mtx
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00
Bartlomiej Zolnierkiewicz 7362951b48 ide: move ->lock and ->timer init from init_irq() to ide_init_port_data()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00
Bartlomiej Zolnierkiewicz d336ae3cf5 ide: no need to touch local IRQs in ide_probe_port()
Remove superfluous

	local_save_flags()
	local_irq_enable_in_hardirq()

	...

	local_irq_restore()

combo.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00
Bartlomiej Zolnierkiewicz 7610c4f5ef ide: fix IDE_DFLAG_NO_IO_32BIT handling
* IDE_DFLAG_NO_IO_32BIT may be set by cmd640's ->init_dev method
  so don't clear it in ide_port_tune_devices() (+ no need to do it).

* Move IDE_DFLAG_NO_IO_32BIT handling to ide_port_init_devices().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:38 +01:00
Stanislaw Gruszka 849d713000 ide: allow to wrap interrupt handler
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Andrew Victor <linux@maxim.org.za>
[bart: minor checkpatch.pl / CodingStyle fixups]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-05 16:10:57 +01:00
Ian Campbell 51d6ac7011 IDE: Unregister and disable devices if initialization fails.
On reboot the loop in device_shutdown gets confused by these partially
initialized devices and goes into an infinite loop. Therefore unregister
and disable these devices.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
[bart: remove leftover hwif->present clearing + update patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-02-02 20:12:22 +01:00
Bartlomiej Zolnierkiewicz 9a100f4b78 ide: fix ide_register_port() failure handling
* Factor out port freeing from ide_host_free() to ide_free_port().

* Add ide_disable_port() and use it on ide_register_port() failure.

Cc: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-02-02 20:12:21 +01:00
Andreas Schwab bb54affa6f ide: fix IDE PMAC breakage
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> writes:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> ---
>  drivers/ide/ide-probe.c |    9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
>
> Index: b/drivers/ide/ide-probe.c
> ===================================================================
> --- a/drivers/ide/ide-probe.c
> +++ b/drivers/ide/ide-probe.c
> @@ -640,14 +640,9 @@ static int ide_register_port(ide_hwif_t 
>  	/* register with global device tree */
>  	dev_set_name(&hwif->gendev, hwif->name);
>  	hwif->gendev.driver_data = hwif;
> -	if (hwif->gendev.parent == NULL) {
> -		if (hwif->dev)
> -			hwif->gendev.parent = hwif->dev;
> -		else
> -			/* Would like to do = &device_legacy */
> -			hwif->gendev.parent = NULL;
> -	}
> +	hwif->gendev.parent = hwif->dev;

This [bart: commit 96d4094123 ("ide: small
ide_register_port() cleanup")] breaks ide-pmac.  It overwrites the parent
that pmac_ide_macio_attach has set.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-19 13:46:56 +01:00
Bartlomiej Zolnierkiewicz 9b896033aa ide: fix accidental LOCKDEP breakage caused by local_irq_set() removal
commit 54cc1428cf ("ide: remove
local_irq_set() macro") accidentally replaced local_save_flags()
by local_irq_set() in ide_probe_port() and __ide_wait_stat()
which resulted in LOCKDEP breakage.

Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-14 19:19:02 +01:00
Sergei Shtylyov 592b531521 ide: move read_sff_dma_status() method to 'struct ide_dma_ops'
Move apparently misplaced read_sff_dma_status() method from 'struct ide_tp_ops'
to 'struct ide_dma_ops', renaming it to dma_sff_read_status() and making only
required for SFF-8038i compatible IDE controller drivers (greatly cutting down
the number of initializers) as its only user (outside ide-dma-sff.c and such
drivers) appears to be ide_pci_check_simplex() which is only called for such
controllers...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:21:02 +01:00
Bartlomiej Zolnierkiewicz e630fcbe93 ide: fix ide_port_scan() to do ACPI setup after initializing request queues
This makes ide_port_scan()'s behavior match ide_host_register()'s
one and fixes OOPS in elv_may_queue() during port re-scan.

Reported-and-tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:21:00 +01:00
Mario Schwalbe 744a82b004 ide: Fix drive's DWORD-IO handling
According the documentation, id[ATA_ID_DWORD_IO] is non-zero if
the drive supports dword IO, while the code disables support by
setting IDE_DFLAG_NO_IO_32BIT. In addition, this word has been
reused by the ATA8 specification. This patch fixes both cases.

Signed-off-by: Mario Schwalbe <schwalbe@inf.tu-dresden.de>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: remove id[ATA_ID_DWORD_IO] check altogether per Sergei's suggestion]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:57 +01:00
Bartlomiej Zolnierkiewicz 2bd24a1cfc ide: add port and host iterators
Add ide_port_for_each_dev() / ide_host_for_each_port() iterators
and update IDE code to use them.

While at it:
- s/unit/i/ variable in ide_port_wait_ready(), ide_probe_port(),
  ide_port_tune_devices(), ide_port_init_devices_data(), do_reset1(),
  ide_acpi_set_state() and scc_dma_end()
- s/d/i/ variable in ide_proc_port_register_devices()

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:56 +01:00
Bartlomiej Zolnierkiewicz 5e7f3a4669 ide: dynamic allocation of device structures
Allocate device structures dynamically instead of having them embedded
in ide_hwif_t:

* Remove needless zeroing of port structure from ide_init_port_data().

* Add ide_hwif_t.devices[MAX_DRIVES] (table of pointers to the devices).

* Add ide_port_{alloc,free}_devices() helpers and use them respectively
  in ide_{host,free}_alloc().

* Convert all users of ->drives[] to use ->devices[] instead.

While at it:

* Use drive->dn for the slave device check in scc_pata.c.

As a nice side-effect this patch cuts ~1kB (x86-32) from the resulting
code size:

   text    data     bss     dec     hex filename
  53963    1244     237   55444    d894 drivers/ide/ide-core.o.before
  52981    1244     237   54462    d4be drivers/ide/ide-core.o.after

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:56 +01:00
Bartlomiej Zolnierkiewicz a32296f938 ide: NUMA aware allocation of host and port structures
kzalloc() -> kzalloc_node() in ide_host_alloc().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:56 +01:00