ahci-vt8251
* requires hardreset after PHY status change
* doesn't clear BSY on signature FIS after hardreset
* needs SError cleared for the port to operate after hardreset
This patch implements ahci_vt8251_hardreset() and sets
ATA_FLAG_HRST_TO_RESUME to handle the above behaviors. This fixes EH
including hotplug on vt8251.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Separate out sata_port_hardreset() from sata_std_hardreset(). This
will be used by LLD hardreset implementation and later by PMP.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Now that ahci_softreset() is fixed to automatically perform CLO if
BSY/DRQ is set on entry, AHCI_FLAG_RESET_NEEDS_CLO is redundant. Kill
it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make user scan wait for scan to complete. This way user can wait for
warm plug request to complete and is prevented from causing EH event
storm by repetitively issuing scan request while EH is in progress.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Fajun Chen <fajunchen@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
NV controllers sometimes fail to perform softreset after hotplug.
Make it use hardreset to resume link.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_irq_on() isn't used outside of libata core layer. The function is
TF/SFF interface specific but currently used by core path with some
hack too. Move it from include/linux/libata.h to
drivers/ata/libata-sff.c.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
libata waits for !BSY even when the status register reports 0xff.
This causes long boot delays when D8 isn't pulled down properly. This
patch does the followings.
* don't wait if status register is 0xff in all wait functions
* make ata_busy_sleep() return 0 on success and -errno on failure.
-ENODEV is returned on 0xff status and -EBUSY on other failures.
* make ata_bus_softreset() succeed on 0xff status. 0xff status is not
reset failure. It indicates no device. This removes unnecessary
retries on such ports. Note that the code change assumes unoccupied
port reporting 0xff status does not produce valid device signature.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Joe Jin <lkmaillist@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
needs a changelog
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds support for ADMA mode on NVIDIA nForce4 (CK804/MCP04) SATA
controllers to the sata_nv driver. Benefits of ADMA mode include:
- NCQ support
- Reduced CPU overhead (controller DMAs command information from memory
instead of them being pushed in by the CPU)
- Full 64-bit DMA support
ADMA mode is enabled by default in this version. To disable it, set the
module parameter adma_enabled=0.
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
- use pci_iomap() [Alan, version 0.0.5t]
- fix Alan's version 0.0.5t change
- line length, trailing whitespace, case indentation cleanups
- don't use deprecated ->eng_timeout() in a driver that uses new EH
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This is a legacy mode PATA driver for the 6101/45 and will also drive
the SATA ports 1 & 2 in legacy mode as well if desired. Tested and
confirmed working by users. The chip supports AHCI type behaviour for
SATA and has a more advanced PATA interface as well so this driver will
get it working but not get best performance for now.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
pci_module_init() conversion for pata_pdc2027x
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Alan Cox <alan@redhat.com> but please apply as follows to keep
revision id straight
Cc: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
pci_module_init convertion in ata_generic.c.
Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Winbond 83759A support in non-multichip mode (afaik nobody ever used
multichip mode anyway). The 83759 is not supported by this driver as it
is already handled elsewhere and doens't use the same interfaces.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement .permission() in ocfs2_file_iops, ocfs2_special_file_iops and
ocfs2_dir_iops.
This helps us avoid some multi-node races with mode change and vfs
operations.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This patch makes the needlessly global configfs_dirent_exists() static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Conditionally update atime in ocfs2_file_aio_read(), ocfs2_readdir() and
ocfs2_mmap().
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This patch adds the core routines for updating atime in ocfs2.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Add splice read/write support in ocfs2.
ocfs2_file_splice_read/write are very similar to ocfs2_file_aio_read/write.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
configfs_unregister_subsystem() nests a pair of inode i_mutex acquisitions,
and thus needs annotation via mutex_lock_nested().
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This is mostly a search and replace as ocfs2_journal_handle is now no more
than a container for a handle_t pointer.
ocfs2_commit_trans() becomes very straight forward, and we remove some out
of date comments / code.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
All callers either pass in NULL directly, or a local variable that is
already set to NULL.
The internals of ocfs2_start_trans() get a nice cleanup as a result.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This gets us rid of a slab we no longer need, as well as removing the
majority of what's left on ocfs2_journal_handle.
ocfs2_commit_unstarted_handle() has no more real work to do, so remove that
function too.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
We can also delete the unused infrastructure which was once in place to
support this functionality. ocfs2_inode_private loses ip_handle and
ip_handle_list. ocfs2_journal_handle loses handle_list.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Instead we record our state on the allocation context structure which all
callers already know about and lifetime correctly. This means the
reservation functions don't need a handle passed in any more, and we can
also take it off the alloc context.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Callers can set h_sync directly on the handle_t, whether a transaction has
been started or not can be determined via the existence of the handle_t on
the struct ocfs2_journal_handle.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
No reason to use our wrapper struct in this function, so take the handle_t
directly.
Also fixes a bug where we were incorrectly setting the handle to NULL in
case of a failure from journal_restart()
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This patch makes the needlessly global ocfs2_create_new_lock() static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Tejun Heo