Commit Graph

25 Commits

Author SHA1 Message Date
Bartlomiej Zolnierkiewicz acc8dbe7f4 icside: DMA support fix
Fix problem introduced by commit 5e37bdc ("ide: add struct
ide_dma_ops (take 3)"): d.dma_ops shouldn't be cleared if
we are going to use DMA.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-13 17:04:50 -04:00
David S. Miller 950f564b70 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/ide-2.6 2010-03-02 23:57:59 -08:00
Bartlomiej Zolnierkiewicz 8776168ca2 ide: change ->set_dma_mode method parameters
Change ->set_dma_mode method parameters to match ->set_dmamode method
used in struct ata_port_operations.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2010-01-19 01:45:29 -08:00
Bartlomiej Zolnierkiewicz f75d4a2387 icside: bring back ->maskproc method
Bring back ->maskproc method since it is still needed for proper operation,
as noticed by Russell King:

> This change is bogus.
>
>         writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
>         readb(base + ICS_ARCIN_V6_INTROFFSET_2);
>
>         writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
>         readb(base + ICS_ARCIN_V6_INTROFFSET_1);
>
> This sequence of code does:
>
> 1. enable interrupt 1
> 2. disable interrupt 2
> 3. enable interrupt 2
> 4. disable interrupt 1
>
> which results in the interrupt for the second channel being enabled -
> leaving channel 1 blocked.
>
> Firstly, icside shares its two IDE channels with one DMA engine - so it's
> a simplex interface.  IDE supports those (or did when the code was written)
> serializing requests between the two interfaces.  libata does not.
>
> Secondly, the interrupt lines on icside float when there's no drive connected
> or when the drive has its NIEN bit set, which means that you get spurious
> screaming interrupts which can kill off all expansion card interrupts on
> the machine unless you disable the channel interrupt on the card.
>
> Since libata can not serialize the operation of the two channels like IDE
> can, the libata version of the icside driver does not contain the interrupt
> stearing logic.  Instead, it looks at the status after reset, and if
> nothing was found on that channel, it masks the interrupt from that
> channel.

This patch reverts changes done in commit dff8817 (I became confused due to
non-standard & undocumented ->maskproc method, anyway sorry about that).

Noticed-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-12 01:49:23 -08:00
Joao Ramos 5bfb151f1f ide: do not access ide_drive_t 'drive_data' field directly
Change ide_drive_t 'drive_data' field from 'unsigned int' type to 'void *'
type, allowing a wider range of values/types to be stored in this field.

Added 'ide_get_drivedata' and 'ide_set_drivedata' helpers to get and set
the 'drive_data' field.

Fixed all host drivers to maintain coherency with the change in the
'drive_data' field type.

Signed-off-by: Joao Ramos <joao.ramos@inov.pt>
[bart: fix qd65xx build, cast to 'unsigned long', minor Coding Style fixups]
Acked-by: Sergei Shtylyov <sshtylyov@ru.montavista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-06-15 22:13:44 +02:00
Bartlomiej Zolnierkiewicz dff8817b78 icside: remove superfluous ->maskproc method
[inspired by pata_icside]

Enabling/disabling of card IRQs is handled fine by IRQ and IDE
subsystems so there is no need for custom ->maskproc method.

Moreover icside_maskproc() would enable IRQ only if it was already
enabled [because of 'if (state->enabled && !mask)' check].

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-06-07 15:37:06 +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
Sergei Shtylyov b019447ce7 icside: register second channel of version 6 PCB
The second IDE channel of version 6 PCB is not being registered anymore since
the commit 48c3c10726 (ide: add struct ide_host
(take 3)).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-16 19:03:36 +02:00
Bartlomiej Zolnierkiewicz 88b4132e10 ide: set/clear drive->waiting_for_dma flag in the core code
Set/clear drive->waiting_for_dma flag in the core code
instead of in ->dma_setup and ->dma_end methods.

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>
2009-03-31 20:15:22 +02:00
Bartlomiej Zolnierkiewicz 4453011f95 ide: destroy DMA mappings after ending DMA (v2)
Move ide_destroy_dmatable() call out from ->dma_end method to
{ide_pc,cdrom_newpc,ide_dma}_intr(), ide_dma_timeout_retry()
and sgiioc4_resetproc().

This causes minor/safe behavior changes w.r.t.:
* cmd64x.c::cmd64{8,x}_dma_end()
* cs5536.c::cs5536_dma_end()
* icside.c::icside_dma_end()
* it821x.c::it821x_dma_end()
* scc_pata.c::__scc_dma_end()
* sl82c105.c::sl82c105_dma_end()
* tx4939ide.c::tx4939ide_dma_end()

v2:
* Fix build for CONFIG_BLK_DEV_IDEDMA=n (reported by Randy Dunlap).

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:20 +02:00
Bartlomiej Zolnierkiewicz 35c9b4daf4 ide: add ->dma_clear method and remove ->dma_timeout one
All custom ->dma_timeout implementations call the generic one thus it is
possible to have only an optional method for resetting DMA engine instead:

* Add ->dma_clear method and convert hpt366, pdc202xx_old and sl82c105
  host drivers to use it.

* Always use ide_dma_timeout() in ide_dma_timeout_retry() and remove
 ->dma_timeout method.

* Make ide_dma_timeout() static.

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>
2009-03-31 20:15:19 +02:00
Bartlomiej Zolnierkiewicz 22117d6eaa ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)
* Rename dma_timer_expiry() to ide_dma_sff_timer_expiry() and export it.

* Add ->dma_timer_expiry method and use it to set hwif->expiry for
  ATA_PROT_DMA protocol in do_rw_taskfile().

* Initialize ->dma_timer_expiry to ide_dma_sff_timer_expiry() for SFF hosts.

* Move setting hwif->expiry from ide_execute_command() to its users and drop
  'expiry' argument.

* Use ide_execute_command() instead of ->dma_exec_cmd in do_rw_taskfile().

* Remove ->dma_exec_cmd method and its implementations.

* Unexport ide_execute_command() and ide_dma_intr().

v2:
* Fix CONFIG_BLK_DEV_IDEDMA=n build (noticed by Randy Dunlap).

* Fix *dma_expiry naming (suggested by Sergei Shtylyov).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:47 +01:00
Bartlomiej Zolnierkiewicz 2298169418 ide: pass command to ide_map_sg()
* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
  commands.

* Pass command to ->dma_setup method and update all its
  implementations accordingly.

* Pass command instead of request to ide_build_sglist(),
  *_build_dmatable() and ide_map_sg().

While at it:

* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.

* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
  change return value type to 'int' and drop unused 'ddir'
  argument.

* Do some minor cleanups in [tx4939]ide_dma_setup().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:46 +01:00
Bartlomiej Zolnierkiewicz b6308ee0c5 ide: move command related fields from ide_hwif_t to struct ide_cmd
* Move command related fields from ide_hwif_t to struct ide_cmd.

* Make ide_init_sg_cmd() take command and sectors number as arguments.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:38 +01:00
Bartlomiej Zolnierkiewicz e6830a86c2 ide: call ide_build_sglist() prior to ->dma_setup (v2)
* Re-map sg table if needed in ide_build_sglist().

* Move ide_build_sglist() call from ->dma_setup to its users.

* Un-export ide_build_sglist().

v2:
* Build fix for CONFIG_BLK_DEV_IDEDMA=n (noticed by Randy Dunlap).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:37 +01:00
Bartlomiej Zolnierkiewicz f7ef12482b icside: icside_dma_setup() fixes
Check for ide_build_sglist() return value and re-map sg table if necessary.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:32 +01:00
Bartlomiej Zolnierkiewicz 33050ec7a2 icside: use struct ide_port_info also for PCB version 5 (v2)
This fixes hwif->channel and drive->dn assignments.

v2:
Fix v5/v6 mismatch noticed by Russell.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:17 +01:00
Bartlomiej Zolnierkiewicz d224b6269e icside: fix PCB version 6 support (v2)
We need to pass struct ide_port_info also to ide_host_register().

v2:
Fix v5/v6 mismatch noticed by Russell.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-02-02 20:12:23 +01:00
Bartlomiej Zolnierkiewicz 898ec223fe ide: remove HWIF() macro
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:52 +01:00
Bartlomiej Zolnierkiewicz b65fac32cf ide: merge ide_hwgroup_t with ide_hwif_t (v2)
* Merge ide_hwgroup_t with ide_hwif_t.

* Cleanup init_irq() accordingly, then remove no longer needed
  ide_remove_port_from_hwgroup() and ide_ports[].

* Remove now unused HWGROUP() macro.

While at it:

* ide_dump_ata_error() fixups

v2:
* Fix ->quirk_list check in do_ide_request()
  (s/hwif->cur_dev/prev_port->cur_dev).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-06 17:20:50 +01:00
Al Viro d16d7667f9 icside section warnings
icside_register_v[56] is called from (__devinit) icside_probe

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30 10:03:36 -08:00
Al Viro 1137fb6704 arm ide breakage
a) semicolon before the function body is a bad idea
b) it's const struct foo, not struct const foo
c) incidentally, it's ecard_remove_driver(), not ecard_unregister_driver()
d) compiling is occasionally useful.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-26 09:35:05 -07:00
Bartlomiej Zolnierkiewicz 2bfba3c444 ide: remove useless subdirs from drivers/ide/
Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-10-21 20:57:23 +02:00