The arch hooks arch_setup_msi_irq and arch_teardown_msi_irq are now
responsible for allocating and freeing the linux irq in addition to
setting up the the linux irq to work with the interrupt.
arch_setup_msi_irq now takes a pci_device and a msi_desc and returns
an irq.
With this change in place this code should be useable by all platforms
except those that won't let the OS touch the hardware like ppc RTAS.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We need to be able to get from an irq number to a struct msi_desc.
The msi_desc array in msi.c had several short comings the big one was
that it could not be used outside of msi.c. Using irq_data in struct
irq_desc almost worked except on some architectures irq_data needs to
be used for something else.
So this patch adds a msi_desc pointer to irq_desc, adds the appropriate
wrappers and changes all of the msi code to use them.
The dynamic_irq_init/cleanup code was tweaked to ensure the new
field is left in a well defined state.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The attach_msi_entry has been reduced to a single simple assignment,
so for simplicity remove the abstraction and directory perform the
assignment.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Since msi_remove_pci_irq_vectors is designed to be called during
hotplug remove it is actively wrong to query the hardware and expect
meaningful results back.
To that end remove the pci_find_capability calls. Testing
dev->msi_enabled and dev->msix_enabled gives us all of the information
we need.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With the removal of msi_lookup_irq all of the functions using msi_lock
operated on a single device and none of them could reasonably be
called on that device at the same time.
Since what little synchronization that needs to happen needs to happen
outside of the msi functions, msi_lock could never be contended and as
such is useless and just complicates the code.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The function msi_lookup_irq was horrible. As a side effect of running
it changed dev->irq, and then the callers would need to change it
back. In addition it does a global scan through all of the irqs,
which seems to be the sole justification of the msi_lock.
To remove the neede for msi_lookup_irq I added first_msi_irq to struct
pci_dev. Then depending on the context I replaced msi_lookup_irq with
dev->first_msi_irq, dev->msi_enabled, or dev->msix_enabled.
msi_enabled and msix_enabled were already present in pci_dev for other
reasons.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The PCI save/restore code doesn't need to care about MSI vs MSI-X, all
it really wants is to say "save/restore all MSI(-X) info for this device".
This is borne out in the code, we call the MSI and MSI-X save routines
side by side, and similarly with the restore routines.
So combine the MSI/MSI-X routines into pci_save_msi_state() and
pci_restore_msi_state(). It is up to those routines to decide what state
needs to be saved.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
pci_scan_msi_device() doesn't do anything anymore, so remove it.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I don't see any reason why we need pci_msi_quirk, quirk code can just
call pci_no_msi() instead.
Remove the check of pci_msi_quirk in msi_init(). This is safe as all
calls to msi_init() are protected by calls to pci_msi_supported(),
which checks pci_msi_enable, which is disabled by pci_no_msi().
The pci_disable_msi routines didn't check pci_msi_quirk, only
pci_msi_enable, but as far as I can see that was a bug not a feature.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Return early from pci_set_power_state() if hardware does not support
power management. This way, we do not generate noise in the logs.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Cleanup MSI code as follows:
- fix some types
- fix strange local variable definition
- delete unnecessary blank line
- add comment to #endif which is far from corresponding #ifdef
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Since isa_bridge is neither assigned any value !NULL nor used on !Alpha,
there's no reason for providing it.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Since 2.6.0-test10, all quirk_sis_96x_compatible() had any effect on
was a printk().
This patch therefore removes it.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Speed up the Intel SMBus PCI quirk by avoiding tests which can only
fail. This also makes the compiled code significantly smaller when
using gcc 3.2/3.4. gcc 4.x appears to optimize the code by itself so
this change doesn't make a difference there.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There's an existing quirk for the kernel to use 1k IO space granularity
on the Intel P64H2. It turns out however that pci_setup_bridge() in
drivers/pci/setup-bus.c reads in the IO base and limit address register
masks it off to the nearest 4k, and writes it back. This causes the
kernel to be on 1k boundaries and the hardware to be 4k aligned. The
patch below fixes the problem.
Signed-off-by: Dan Yeisley <dan.yeisley@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch deletes trailing white space in SHPCHP driver. This has no
functional change.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE config option is not
needed because polling mechanism for shpc hotplug events can be
enabled through module option 'shpchp_poll_mode'. This patch removes
CONFIG_HOTPLUG_PCI_SHPC_POLL_EVENT_MODE.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes this problem that pciehp driver will sleep
unnecessarily long when waiting for command completion. With this
patch, modprobe pciehp driver becomes very faster as follows for
instance.
o Without this patch
# time /sbin/modprobe pciehp
real 0m4.976s
user 0m0.000s
sys 0m0.004s
o With this patch
# time /sbin/modprobe pciehp
real 0m0.640s
user 0m0.000s
sys 0m0.004s
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch cleans up the code to wait for command completion.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch cleans up pciehp.h. This has no functional change.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch cleans up register access functions. This has no functional
change.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The struct php_ctlr seems to be only for complicating codes. This
patch removes struct php_ctlr and related codes.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch cleans up slot list handling (use list_head). This has no
functional change.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch cleans up init_slots() in pciehp_core.c based on
pcihp_skeleton.c. This has no functional change.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
On Fri, Nov 17, 2006 at 09:32:36AM -0500, Alan Cox wrote:
>
> Soon we should deprecate pci_find_device as well
So let's mark it as __deprecated now, which also has the side effect
that noone can later whine that removing it might break some shiny
external modules.
Oh, and if anything starts complaining "But this adds some warnings to
my kernel build!", he should either first fix the 200 kB (sic) of
warnings I'm getting in 2.6.19-rc5-mm2 starting at MODPOST or go to hell.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch removes the no longer used pci_find_device_reverse().
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch contains the following cleanups:
- move all EXPORT_SYMBOL's directly below the code they are exporting
- move all DECLARE_PCI_FIXUP_*'s directly below the functions they
are calling
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds the following changes into generic PCI code especially
for PCI legacy I/O port free drivers.
- Added new pci_request_selected_regions() and
pci_release_selected_regions() for PCI legacy I/O port free
drivers in order to request/release only the selected regions.
- Added helper routine pci_select_bars() which makes proper mask
of BARs from the specified resource type. This would be very
helpful for users of pci_enable_device_bars().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Original patch was posted as "PCI : Move pci_fixup_device and is_enabled".
This 1 of 3 patches does:
- reverts small part of Inaky's patch
(remove __pci_enable_device)
This change will be recovered by 3rd patch.
- temporarily remove pci_fixup_device.
This change will be recovered by 2nd patch.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
For pci mem resource that size is bigger than 4G, the sz returned by
pc_size will be 0.
So that resource is skipped, and register contained hi address will be
treated as another 32bit resource. We need to use sz64 and pci_sz64 for
64 bit resource for clear logical. Typical usages for this: Opteron
system with co-processor and the co-processor could take more than 4G
RAM as pre-fetchable mem resource.
Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
JFS: Remove incorrect kgdb define
JFS: call io_schedule() instead of schedule() to avoid deadlock
JFS: Add lockdep annotations
JFS: Avoid BUG() on a damaged file system
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (57 commits)
[GFS2] make gfs2_writepages() static
[GFS2] Unlock page on prepare_write try lock failure
[GFS2] nfsd readdirplus assertion failure
[DLM] fix softlockup in dlm_recv
[DLM] zero new user lvbs
[DLM/GFS2] indent help text
[GFS2] Fix unlink deadlocks
[GFS2] Put back semaphore to avoid umount problem
[GFS2] more CURRENT_TIME_SEC
[GFS2/DLM] fix GFS2 circular dependency
[GFS2/DLM] use sysfs
[GFS2] make lock_dlm drop_count tunable in sysfs
[GFS2] increase default lock limit
[GFS2] Fix list corruption in lops.c
[GFS2] Fix recursive locking attempt with NFS
[DLM] can miss clearing resend flag
[DLM] saved dlm message can be dropped
[DLM] Make sock_sem into a mutex
[GFS2] Fix typo in glock.c
[GFS2] use CURRENT_TIME_SEC instead of get_seconds in gfs2
...
On Mon, Jan 29, 2007 at 08:45:28PM -0800, Andrew Morton wrote:
>...
> Changes since 2.6.20-rc6-mm2:
>...
> git-gfs2-nmw.patch
>...
> git trees
>...
This patch makes the needlessly global gfs2_writepages() static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
When the try lock of the glock failed in prepare_write we were
incorrectly exiting this function with the page still locked.
This was resulting in further I/O to this page hanging.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (27 commits)
[IA64] swiotlb abstraction (e.g. for Xen)
[IA64] swiotlb cleanup
[IA64] make swiotlb use bus_to_virt/virt_to_bus
[IA64] swiotlb bug fixes
[IA64] Hook up getcpu system call for IA64
[IA64] clean up sparsemem memory_present call
[IA64] show_mem() for IA64 sparsemem NUMA
[IA64] missing exports hwsw_sync_...
[IA64] virt_to_page() can be called with NULL arg
[IA64] alignment bug in ldscript
[IA64] register memory ranges in a consistent manner
[IA64] Enable SWIOTLB only when needed
[IA64-SGI] Check for TIO errors on shub2 Altix
[IA64] remove bogus prototype ia64_esi_init()
[IA64] Clear IRQ affinity when unregistered
[IA64] fix ACPI Kconfig issues
[IA64] Fix NULL-pointer dereference in ia64_machine_kexec()
[IA64] find thread for user rbs address
[IA64] use snprintf() on features field of /proc/cpuinfo
[IA64] enable singlestep on system call
...
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid:
USB HID: handle multi-interface devices for Apple macbook pro properly
HID: move away from DEBUG defines in favor of CONFIG_HID_DEBUG
USB HID: fix bogus comment in hid_get_class_descriptor()
USB HID: remove hid_find_field_by_usage()
HID: API - fix leftovers of hidinput API in USB HID
HID: hid debug from hid-debug.h to hid layer
hid: force feedback driver for PantherLord USB/PS2 2in1 Adapter
hid: quirk for multi-input devices with unneeded output reports
hid: allow force feedback for multi-input devices
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
IB/ehca: Remove obsolete prototypes
IB/ehca: Remove use of do_mmap()
RDMA/addr: Handle ethernet neighbour updates during route resolution
IB: Make sure struct ib_user_mad.data is aligned
IB/srp: Don't wait for response when QP is in error state.
IB: Return qp pointer as part of ib_wc
IB: Include <linux/kref.h> explicitly in <rdma/ib_verbs.h>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (32 commits)
mmc: tifm: replace kmap with page_address
mmc: sdhci: fix voltage ocr
mmc: sdhci: replace kmap with page_address
mmc: wbsd: replace kmap with page_address
mmc: handle pci_enable_device() return value in sdhci
mmc: Proper unclaim in mmc_block
mmc: change wbsd mailing list
mmc: Graceful fallback for fancy features
mmc: Handle wbsd's stupid command list
mmc: Allow host drivers to specify max block count
mmc: Allow host drivers to specify a max block size
tifm_sd: add suspend and resume functionality
tifm_core: add suspend/resume infrastructure for tifm devices
tifm_7xx1: prettify
tifm_7xx1: recognize device 0xac8f as supported
tifm_7xx1: switch from workqueue to kthread
tifm_7xx1: Merge media insert and media remove functions
tifm_7xx1: simplify eject function
Add dummy_signal_irq function to save check in ISR
Remove unused return value from signal_irq callback
...
