Apparently, some machines may have problems with PCI run-time power
management if MSIs are used for the native PCIe PME signaling. In
particular, on the MSI Wind U-100 PCIe PME interrupts are not
generated by a PCIe root port after a resume from suspend to RAM, if
the system wake-up was triggered by a PME from the device attached to
this port. [It doesn't help to free the interrupt on suspend and
request it back on resume, even if that is done along with disabling
the MSI and re-enabling it, respectively.] However, if INTx
interrupts are used for this purpose on the same machine, everything
works just fine.
For this reason, add a kernel command line switch allowing one to
request that MSIs be not used for the native PCIe PME signaling,
introduce a DMI table allowing us to blacklist machines that need
this switch to be set by default and put the MSI Wind U-100 into this
table.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Changing occurrences of variants of PCI-X and PCIe to the PCI-SIG
terms listed in the "Trademark and Logo Usage Guidelines".
http://www.pcisig.com/developers/procedures/logos/Trademark_and_Logo_Usage_Guidelines_updated_112206.pdf
Patch is limited to drivers/pci/ and changes concern non-comment parts or
anything that might be visible to the user.
Signed-off-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
We don't need pcie_port_device_probe() because we can get pci
device/port type using pci_is_pcie() and 'pcie_type' fields in struct
pci_dev. Remove pcie_port_device_probe().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
No need to include "-driver" in the driver name.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Tom Long Nguyen <tom.l.nguyen@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
After commit c82f63e411
(PCI: check saved state before restore) pcie_portdrv_slot_reset()
may not work correctly if dev->error_state is equal to
pci_channel_io_frozen, because dev->state_saved need not be set at
that time. Fix this issue by setting dev->state_saved before
pci_restore_state() is called in pcie_portdrv_slot_reset().
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
When an upstream port reports an AER error to root port, kernel
starts error recovery procedures. The default return value of
function pcie_portdrv_slot_reset is PCI_ERS_RESULT_NONE. If all
port service drivers of the downstream port under the upstream
port have no slot_reset method in pci_error_handlers, AER recovery
would stop without resume. Below patch against 2.6.30-rc3 fixes it.
Signed-off-by: Zhang Yanmin <yanmin.zhang@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Commit 55633af3 (PCIe portdrv: Use driver data to simplify code)
added a kfree of the driver private data in pcie_port_device_remove
but forgot to remove the old kfree from pcie_portdrv_remove.
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Implement pm object for the PCI Express port driver in order to use
the new power management framework and reduce the code size.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The function pcie_portdrv_save_config() in portdrv_pci.c is not
necessary. Remove it.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The PCI Express port driver calls pci_enable_device() before setting
up interrupts, which is wrong, because if there is an interrupt pin
configured for the port, pci_enable_device() will likely set up an
interrupt link for it. However, this shouldn't be done if either
MSI or MSI-X interrupt mode is chosen for the port.
The solution is to call pci_enable_device() after setting up
interrupts, because in that case the interrupt link won't be set up
if MSI or MSI-X are enabled.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
The PCIe port driver calls pci_enable_device() during probe but
never calls pci_disable_device() during remove.
Cc: stable@kernel.org
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
The PCIe port driver currently sets the PCIe AER error reporting bits for
any root or switch port without first checking to see if firmware will grant
control. This patch moves setting these bits to the AER service driver
aer_enable_port routine. The bits are then set for the root port and any
downstream switch ports after the check for firmware support (aer_osc_setup)
is made. The patch also unsets the bits in a similar fashion when the AER
service driver is unloaded.
Reviewed-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@hobbes.lan>
Simplify suspend and resume of the PCI Express port driver. It no
longer needs to save and restore the standard configuration space of the
device; this is now done by the PCI PM core layer.
This patch is reported to fix the regression tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=12598
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Parag Warudkar <parag.lkml@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Suspend-resume of PCI Express ports has recently been moved into
_suspend_late() and _resume_early() callbacks, but some functions
executed from there should not be called with interrupts disabled,
eg. pci_enable_device(). For this reason, split the suspend-resume
of PCI Express ports into parts to be executed with interrupts
disabled and with interrupts enabled.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
I don't see why the suspend and resume of PCI Express ports should be
handled with interrupts enabled and it may even lead to problems in
some situations. For this reason, move the suspending and resuming
of PCI Express ports into ->suspend_late() and ->resume_early()
callbacks executed with interrupts disabled.
This patch addresses the regression from 2.6.26 tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=12121 .
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Use "[%04x:%04x]" for PCI vendor/device IDs to follow the format
used by lspci(8).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The pcie protdrv status can be returned uninitialized,
if there are no children under a device. This leads to
bad responses downstream. Fix this.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCIE error output should conform to vendor_id:device_id.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix following section mismatch warning (when compiled with CONFIG_HOTPLUG=n):
WARNING: drivers/pci/built-in.o - Section mismatch: reference to .init.text:pcie_portdrv_probe from .data between 'pcie_portdrv' (at offset 0xe40) and 'pcie_portdrv_err_handler'
This warning was fixed by renaming pcie_portdrv to pcie_portdriver so we pass
the whitelist.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The following warning message should not be displayed for devices
which don't use an interrupt pin.
pcie_portdrv_probe->Dev[XXXX:XXXX] has invalid IRQ. Check vendor BIOS
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
On Thu, 2006-09-28 at 03:42, Olaf Hering wrote:
> PCI-Express AER implemetation: pcie_portdrv error handler
>
> This patch breaks if CONFIG_PM is not enabled,
> pcie_portdrv_restore_config() will be undefined.
I move the definition of pcie_portdrv_restore_config
out of CONFIG_PM.
Below patch is against 2.6.18-mm1. Could you try it?
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Have pcie_port_bus_register() notice and return errors.
Mark it __must_check so that its caller(s) must check its return value.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If pcie_portdrv_probe() fails but it had already called
pci_enable_device(), then call pci_disable_device() when
returning error.
Is there some reason that this isn't being done?
or was it just missed?
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.
In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch. This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other. So if any
hunk rejects or gets in the way of other patches, just drop it. My scripts
will pick it up again in the next round.
Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch, is based on kernel 2.6.12, provides a fix for PCIe
port bus driver suspend/resume.
Signed-off-by: T. Long Nguyen <tom.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Rafael J. Wysocki