Commit Graph

1276 Commits

Author SHA1 Message Date
Alex Chiang
828f37683e PCI: update pci_create_slot() to take a 'hotplug' param
Slot detection drivers can co-exist with hotplug drivers. The names
of the detected/claimed slots may be different depending on module
load order.

For legacy reasons, we need to allow hotplug drivers to override
the slot name if a detection driver is loaded first (and they find
the same slots).

Creating and overriding slot names should be an atomic operation,
otherwise you get a locking nightmare as various drivers race to
call pci_create_slot().

pci_create_slot() is already serialized by grabbing the pci_bus_sem.

We update the API and add a 'hotplug' param, which is:

	set if the caller is a hotplug driver
	NULL if the caller is a detection driver

pci_create_slot() does not actually use the 'hotplug' parameter in this
patch. A later patch will add the logic that uses it.

Cc: kristen.c.accardi@intel.com
Cc: matthew@wil.cx
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:38 -07:00
Alex Chiang
d25b7c8d6b PCI: rename pci_update_slot_number to pci_renumber_slot
The GPL exported symbol pci_update_slot_number has been renamed to
pci_renumber_slot. Some of the safety checks were unnecessary and
were removed.

Cc: kristen.c.accardi@intel.com
Cc: matthew@wil.cx
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:37 -07:00
Alex Chiang
1359f2701b PCI Hotplug core: add 'name' param pci_hp_register interface
Update pci_hp_register() to take a const char *name parameter.

The motivation for this is to clean up the individual hotplug
drivers so that each one does not have to manage its own name.
The PCI core should be the place where we manage the name.

We update the interface and all callsites first, in a
"no functional change" manner, and clean up the drivers later.

Cc: kristen.c.accardi@intel.com
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:37 -07:00
Sheng Yang
8dd7f8036c PCI: add support for function level reset
Sometimes, it's necessary to enable software's ability to quiesce and
reset endpoint hardware with function-level granularity, so provide
support for it.

The patch implement Function Level Reset(FLR) feature following PCI-e
spec. And this is the first step. We would add more generic method, like
D0/D3, to allow more devices support this function.

The patch contains two functions. pcie_reset_function() is the new
driver API, and, contains some action to quiesce a device.  The other
function is a helper:  pcie_execute_reset_function() just executes the
reset for a particular device function.

Current the usage model is in KVM. Function reset is necessary for
assigning device to a guest, or moving it between partitions.

For Function Level Reset(FLR), please refer to PCI Express spec chapter
6.6.2.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:35 -07:00
Matthew Wilcox
c4ed02fae7 PCI: Fix reference counting bug
pci_get_subsys() will decrement the reference count of the device that
it starts searching from.  Unfortunately, the pci_find_device() interface
will already have decremented the reference count of the device earlier,
so the device will end up losing all reference counts and be freed.

We can fix this by incrementing the reference count of the device to
start searching from before calling pci_get_subsys().

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:35 -07:00
Taku Izumi
d389fec6a2 ACPI/PCI: Set support bit for MSI in support field of _OSC
Currently linux doesn't have any code to set the "MSI supported" bit in
Support Fireld of _OSC. This patch adds the code for that.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:35 -07:00
Taku Izumi
ab20440c37 ACPI/PCI: Fix return value of acpi_cuery_osc()
If acpi_query_osc() returns other than AE_OK, __pci_osc_support_set()
stops scanning ACPI objects to evaluate _OSC. This prevents subsequent
_OSCs from being evaluated if some of root bridge doesn't have _OSC, for
example. So acpi_query_osc() should return always AE_OK to evaluate all
_OSC.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:34 -07:00
Taku Izumi
adf411b819 ACPI/PCI: Always query _OSC control field in pci_osc_control_set()
In current pci_osc_control_set() implementation, once the _OSC control
field is queried, it is never queried again. But the query result can
change depending on the _OSC support field. For example, if PCI Express
Native Hot Plug control depends on ASPM support on a certain platform, a
PCI Express Native Hot Plug Control query would fail before the ASPM
driver was loaded, but it would succeed if the ASPM driver was loaded
first.  Therefore, pci_osc_control_set() should query the _OSC control
field every time.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:34 -07:00
Taku Izumi
4e39432f4d ACPI/PCI: Change pci_osc_control_set() to query control bits first
Current pci_osc_control_set() evaluates _OSC without query for control
bits, unless __pci_osc_support_set() is called beforehand. But as
strongly recommended in PCI firmware specification, it should query
control bits first.

This patch changes pci_osc_control_set() to query control bits first
even if __pci_osc_support_set() is not called beforehand.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:33 -07:00
Taku Izumi
9778c14b4c ACPI/PCI: Fix possible race condition on _OSC evaluation
Fix possible race condition on _OSC evaluation.

Current _OSC evaluation code has possible race condition because it
maniputes osc_data linked list or its contents without any lock
mechanism.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-22 16:42:33 -07:00
David Woodhouse
b876d08f81 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/pci/dmar.c
2008-10-21 19:42:20 +01:00
Linus Torvalds
a0bfb673dc Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (41 commits)
  PCI: fix pci_ioremap_bar() on s390
  PCI: fix AER capability check
  PCI: use pci_find_ext_capability everywhere
  PCI: remove #ifdef DEBUG around dev_dbg call
  PCI hotplug: fix get_##name return value problem
  PCI: document the pcie_aspm kernel parameter
  PCI: introduce an pci_ioremap(pdev, barnr) function
  powerpc/PCI: Add legacy PCI access via sysfs
  PCI: Add ability to mmap legacy_io on some platforms
  PCI: probing debug message uniformization
  PCI: support PCIe ARI capability
  PCI: centralize the capabilities code in probe.c
  PCI: centralize the capabilities code in pci-sysfs.c
  PCI: fix 64-vbit prefetchable memory resource BARs
  PCI: replace cfg space size (256/4096) by macros.
  PCI: use resource_size() everywhere.
  PCI: use same arg names in PCI_VDEVICE comment
  PCI hotplug: rpaphp: make debug var unique
  PCI: use %pF instead of print_fn_descriptor_symbol() in quirks.c
  PCI: fix hotplug get_##name return value problem
  ...
2008-10-20 13:40:47 -07:00
Linus Torvalds
9301975ec2 Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...
2008-10-20 13:23:01 -07:00
David Woodhouse
b364776ad1 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/pci/intel-iommu.c
2008-10-20 20:19:36 +01:00
Yu Zhao
270c66be9b PCI: fix AER capability check
The 'use pci_find_ext_capability everywhere' cleanup brought a new bug,
which makes the AER stop working.  Fix it by actually using find_ext_cap
instead of just find_cap.  Drop the unused config space size define while
we're at it.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:52 -07:00
Jesse Barnes
0927678f55 PCI: use pci_find_ext_capability everywhere
Remove some open coded (and buggy) versions of pci_find_ext_capability
in favor of the real routine in the PCI core.

Tested-by: Tomasz Czernecki <czernecki@gmail.com>
Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:51 -07:00
Jesse Barnes
1543c90c39 PCI: remove #ifdef DEBUG around dev_dbg call
No longer needed since we don't use the function symbol stuff anymore.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:50 -07:00
Kenji Kaneshige
bd1d9855be PCI hotplug: fix get_##name return value problem
The commit 356a9d6f3dd283f83861adf1ac909879f0e66411 (PCI: fix hotplug
get_##name return value problem) doesn't seem to be merged properly.
Because of this, PCI hotplug no longer works (Read/Write PCI hotplug
files always returns -ENODEV).

This patch fixes wrong check of try_module_get() return value check in
get_##name().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:50 -07:00
Benjamin Herrenschmidt
f19aeb1f36 PCI: Add ability to mmap legacy_io on some platforms
This adds the ability to mmap legacy IO space to the legacy_io files
in sysfs on platforms that support it. This will allow to clean up
X to use this instead of /dev/mem for legacy IO accesses such as
those performed by Int10.

While at it I moved pci_create/remove_legacy_files() to pci-sysfs.c
where I think they belong, thus making more things statis in there
and cleaned up some spurrious prototypes in the ia64 pci.h file

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:46 -07:00
Vincent Legoll
f393d9b130 PCI: probing debug message uniformization
This patch uniformizes PCI probing debug boot messages with dev_printk()
intead of manual printk()

It changes adress range output from [%llx, %llx] to [%#llx-%#llx], like
in pci_request_region().

For example, it goes from the mixed-style:

PCI: 0000:00:1b.0 reg 10 64bit mmio: [f4280000, f4283fff]
pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold

to uniform:

pci 0000:00:1b.0: reg 10 64bit mmio: [0xf4280000-0xf4283fff]
pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold

This patch has been runtime tested, boot log messages diffed, everything
looks OK.

Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Vincent Legoll <vincent.legoll@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 11:01:45 -07:00
Yu Zhao
58c3a727cb PCI: support PCIe ARI capability
This patch adds support for PCI Express Alternative Routing-ID
Interpretation (ARI) capability.

The ARI capability extends the Function Number field of the PCI Express
Endpoint by reusing the Device Number which is otherwise hardwired to 0.
With ARI, an Endpoint can have up to 256 functions.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:32 -07:00
Zhao, Yu
201de56eb2 PCI: centralize the capabilities code in probe.c
This patch centralizes the initialization and release functions of
various PCI capabilities in probe.c, which makes the introduction
of new capability support functions cleaner in the future.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:31 -07:00
Zhao, Yu
280c73d369 PCI: centralize the capabilities code in pci-sysfs.c
This patch centralizes functions used to add and remove sysfs entries
for various capabilities. With this cleanup, the code is more readable
and easier for adding new capability related functions.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:31 -07:00
Peter Chubb
e354597cce PCI: fix 64-vbit prefetchable memory resource BARs
Since patch 6ac665c63d my infiniband
controller hasn't worked.  This is because it has 64-bit prefetchable
memory, which was mistakenly being  taken to be 32-bit memory.  The
resource flags in this case are PCI_BASE_ADDRESS_MEM_TYPE_64 |
PCI_BASE_ADDRESS_MEM_PREFETCH.

This patch checks only for the PCI_BASE_ADDRESS_MEM_TYPE_64 bit; thus
whether the region is prefetchable or not is ignored.  This fixes my
Infiniband.

Reviewed-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:30 -07:00
Zhao, Yu
557848c3c0 PCI: replace cfg space size (256/4096) by macros.
This is a cleanup that changes all PCI configuration space size
representations to the macros (PCI_CFG_SPACE_SIZE and
PCI_CFG_SPACE_EXP_SIZE). And the macros are also moved from
drivers/pci/probe.c to drivers/pci/pci.h.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:29 -07:00
Zhao, Yu
022edd86d7 PCI: use resource_size() everywhere.
This is a cleanup that replaces the resource calculation formula with
resource_size().

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:28 -07:00
Kristen Carlson Accardi
5d9bc1fa47 PCI hotplug: rpaphp: make debug var unique
Change debug variable name to one more unique to this driver.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:27 -07:00
Yinghai Lu
c9bbb4abb6 PCI: use %pF instead of print_fn_descriptor_symbol() in quirks.c
Use %pF instead of print_fn_descriptor_symbol() in quirks.c to get the name of
the hook we're calling.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:26 -07:00
Zhao, Yu
c8761fe80e PCI: fix hotplug get_##name return value problem
Currently, get_##name in pci_hotplug_core.c will return 0 if module
unload wins the race between unload & reading the hotplug file.  Fix
that case to return -ENODEV like it should.

Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:25 -07:00
Stephen Hemminger
11d587429e PCI: fix sparse warning in pci_remove_behind_bridge
Get rid of the second definition of dev which hides the earlier one in
the argument list and causes a warning from sparse.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:25 -07:00
Jesse Barnes
ec84f1268f PCI: fix -Wakpm warnings in pci_pm_init debug output
Checkpatch would have complained about this but neither Bjorn nor myself
ran it prior to pushing.  Fixup the issues Andrew pointed out.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:54:18 -07:00
Alex Chiang
cef354db0d PCI: connect struct pci_dev to struct pci_slot
The introduction of struct pci_slot (f46753c5e3)
added a struct pci_slot pointer to struct pci_dev, but we forgot to
associate the two.

Connect the two structs together; the interesting portions of the object
lifetimes are:

	- when a new pci_slot is created, connect it to the appropriate
	  pci_dev's. A single pci_slot may be associated with multiple
	  pci_dev's, e.g. any multi-function PCI device.

	- when a pci_slot is released, look for all the pci_dev's it was
	  associated with, and set their pci_slot pointers to NULL

	- when a pci_dev is created, look for slots to associate with.

Note -- when a pci_dev is released, we don't need to do any bookkeeping,
since pci_slot's do not have pointers to pci_dev's.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:52 -07:00
Mike Travis
93ff68a55a PCI: make CPU list affinity visible
Stephen Hemminger wrote:
> Looks like Mike created cpulistaffinty in sysfs but never completed
> the job.

This patch hooks things up correctly, taking care to remove the new file
when the bus is destroyed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:51 -07:00
Jike Song
5993760f7f PCI: utilize calculated results when detecting MSI features
In msi_capability_init, we can make use of the calculated results
instead of calling is_mask_bit_support and is_64bit_address twice.

Signed-off-by: Jike Song <albcamus@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:50 -07:00
Taku Izumi
7f2feec140 PCI: pciehp: replace printk with dev_printk
This patch replaces printks within pciehp module with dev_printks.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:49 -07:00
Taku Izumi
83e9ad540b PCI: pciehp: change name tag of "hpdriver_portdrv" variable
I think an appropriate name tag of "hpdriver_portdrv" variable
is "pciehp" rather than "hpdriver".

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:49 -07:00
Kenji Kaneshige
f7a10e32a1 PCI: pciehp: fix irq initialization
Current pciehp driver gets irq number from pci_dev->irq. But because
pciehp driver is a pci express port service driver, it should get irq
number from pcie_device->irq.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:47 -07:00
Bjorn Helgaas
c9ed77eeba PCI: tidy PME support messages
This patch changes these two messages:

    pci 0000:00:03.0: supports D1
    pci 0000:00:03.0: supports D2

to this:

    pci 0000:00:03.0: supports D1 D2

It also trivially converts a "dev_printk(KERN_INFO, ...)" to
"dev_info(...)".

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:46 -07:00
akpm@linux-foundation.org
2fd39aa7c2 PCI: ibmphp: list_for_each to list_for_each_entry-checkpatch cleanups
Please run checkpatch prior to sending patches, this one fixes several style
issues with the list_for_each conversion patch.

Cc: Cordelia Sam <cordesam@gmail.com>
Cc: Cordelia Sam <cordsam@linux.vnet.ibm.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:45 -07:00
akpm@linux-foundation.org
a8d2dbd384 PCI: ibmphp: list_for_each to list_for_each_entry
Make code more readable with list_for_each_entry().

Signed-off-by: Cordelia Sam <cordesam@gmail.com>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:44 -07:00
Bjorn Helgaas
34a2e15e95 PCI: follow lspci device/vendor style
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>
2008-10-20 10:53:43 -07:00
Rafael J. Wysocki
0235c4fc7f PCI PM: Introduce function pci_wake_from_d3
Many device drivers use the following sequence of statements to enable
the device to wake up the system while being in the D3_hot or D3_cold
low power state:

        pci_enable_wake(pdev, PCI_D3hot, 1);
        pci_enable_wake(pdev, PCI_D3cold, 1);

However, the second call is not necessary if the first one succeeds (the
ordering of the statements above doesn't matter here) and it may even be
harmful, because we are not supposed to enable PME# after the wake-up
power has been enabled for the device.

To allow drivers to overcome this problem, introduce function
pci_wake_from_d3() that will enable the device to wake up the system
from any of D3_hot and D3_cold as long as the wake-up from at least one
of them is supported.

Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:41 -07:00
Thomas Petazzoni
3d13731024 PCI: allow quirks to be compiled out
This patch adds the CONFIG_PCI_QUIRKS option which allows to remove all
the PCI quirks, which are not necessarily used on embedded systems when
PCI is working properly. As this is a size-reduction option, it depends
on CONFIG_EMBEDDED. It allows to save almost 12 kilobytes of kernel
code:

   text	   data	    bss	    dec	    hex	filename
1287806	 123596	 212992	1624394	 18c94a	vmlinux.old
1275854	 123596	 212992	1612442	 189a9a	vmlinux
 -11952       0       0  -11952   -2EB0 +/-

This patch has originally been written by Zwane Mwaikambo
<zwane@arm.linux.org.uk> and is part of the Linux Tiny project.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:53:40 -07:00
Jean Delvare
b41d6cf38e PCI: Check dynids driver_data value for validity
Only accept dynids whose driver_data value matches one of the driver's
pci_driver_id entries. This prevents the user from accidentally passing
values the drivers do not expect.

Cc: Milton Miller <miltonm@bga.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:48:35 -07:00
Milton Miller
edbc25caaa PCI: remove dynids.use_driver_data
The driver flag dynids.use_driver_data is almost consistently not set,
and causes more problems than it solves.  It was initially intended as a
flag to indicate whether a driver's usage of driver_data had been
carefully inspected and was ready for values from userspace.  That audit
was never done, so most drivers just get a 0 for driver_data when new
IDs are added from userspace via sysfs.  So remove the flag, allowing
drivers to see the data directly (a followon patch validates the passed
driver_data value against what the drivers expect).

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-10-20 10:48:34 -07:00
Benjamin Herrenschmidt
096e6f673d pci: Use new %pR to print resource ranges
This converts things in drivers/pci to use %pR to printout the
content of a struct resource instead of hand-casted %llx or
other variants.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 09:12:32 -07:00
Linus Torvalds
2be508d847 Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (69 commits)
  Revert "[MTD] m25p80.c code cleanup"
  [MTD] [NAND] GPIO driver depends on ARM... for now.
  [MTD] [NAND] sh_flctl: fix compile error
  [MTD] [NOR] AT49BV6416 has swapped erase regions
  [MTD] [NAND] GPIO NAND flash driver
  [MTD] cmdlineparts documentation change - explain where mtd-id comes from
  [MTD] cfi_cmdset_0002.c: Add Macronix CFI V1.0 TopBottom detection
  [MTD] [NAND] Fix compilation warnings in drivers/mtd/nand/cs553x_nand.c
  [JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash
  [MTD] mtdoops: Fix a bug where block may not be erased
  [MTD] mtdoops: Add a magic number to logged kernel oops
  [MTD] mtdoops: Fix an off by one error
  [JFFS2] Correct parameter names of jffs2_compress() in comments
  [MTD] [NAND] sh_flctl: add support for Renesas SuperH FLCTL
  [MTD] [NAND] Bug on atmel_nand HW ECC : OOB info not correctly written
  [MTD] [MAPS] Remove unused variable after ROM API cleanup.
  [MTD] m25p80.c extended jedec support (v2)
  [MTD] remove unused mtd parameter in of_mtd_parse_partitions()
  [MTD] [NAND] remove dead Kconfig associated with !CONFIG_PPC_MERGE
  [MTD] [NAND] driver extension to support NAND on TQM85xx modules
  ...
2008-10-20 09:03:12 -07:00
Ameya Palande
4d235ba6c2 intel-iommu: typo fix and correct word in the comment
Fix for a typo and and replacing incorrect word in the comment.

Signed-off-by: Ameya Palande <2ameya@gmail.com>
Cc: "Ashok Raj" <ashok.raj@intel.com>
Cc: "Shaohua Li" <shaohua.li@intel.com>
Cc: "Anil S Keshavamurthy" <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20 08:52:34 -07:00
David Woodhouse
f82851a8a4 dmar: fix uninitialised 'ret' variable in dmar_parse_dev()
This was introduced by commit 1886e8a90a
("x64, x2apic/intr-remap: code re-structuring, to be used by both DMA
and Interrupt remapping"). It was causing bogus results to be returned
from dmar_parse_dev() when the first unit with the INCLUDE_ALL flag was
processed.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18 15:45:48 +01:00
FUJITA Tomonori
bb9e6d6507 intel-iommu: use coherent_dma_mask in alloc_coherent
This patch fixes intel-iommu to use dev->coherent_dma_mask in
alloc_coherent. Currently, intel-iommu uses dev->dma_mask in
alloc_coherent but alloc_coherent is supposed to use
coherent_dma_mask. It could break drivers that uses smaller
coherent_dma_mask than dma_mask (though the current code works for the
majority that use the same mask for coherent_dma_mask and dma_mask).

[dwmw2: dma_mask can be bigger than 'unsigned long']
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18 14:46:16 +01:00
Fenghua Yu
5b6985ce8e intel-iommu: IA64 support
The current Intel IOMMU code assumes that both host page size and Intel
IOMMU page size are 4KiB. The first patch supports variable page size.
This provides support for IA64 which has multiple page sizes.

This patch also adds some other code hooks for IA64 platform including
DMAR_OPERATION_TIMEOUT definition.

[dwmw2: some cleanup]
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-18 14:29:15 +01:00
Youquan Song
cacd4213d8 dmar: remove the quirk which disables dma-remapping when intr-remapping enabled
Now that we have DMA-remapping support for queued invalidation, we
can enable both DMA-remapping and interrupt-remapping at the same time.

Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17 08:05:30 +01:00
Youquan Song
a77b67d402 dmar: Use queued invalidation interface for IOTLB and context invalidation
If queued invalidation interface is available and enabled, queued invalidation
interface will be used instead of the register based interface.

According to Vt-d2 specification, when queued invalidation is enabled,
invalidation command submit works only through invalidation queue and not
through the command registers interface.

Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17 08:05:01 +01:00
Youquan Song
3481f21097 dmar: context cache and IOTLB invalidation using queued invalidation
Implement context cache invalidate and IOTLB invalidation using
queued invalidation interface. This interface will be used by
DMA remapping, when queued invalidation is supported.

Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17 08:03:14 +01:00
Suresh Siddha
f05810c996 dmar: use spin_lock_irqsave() in qi_submit_sync()
Next patch in the series will use queued invalidation interface
qi_submit_sync() for DMA-remapping aswell, which can be called from interrupt
context.

So use spin_lock_irqsave() instead of spin_lock() in qi_submit_sync().

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-10-17 08:03:05 +01:00
Linus Torvalds
2e532d68a2 {pci,pnp} quirks.c: don't use deprecated print_fn_descriptor_symbol()
I dunno how this missed Bjorn and his quest to use %pF in commit
c80cfb0406 ("vsprintf: use new vsprintf
symbolic function pointer format"), but it did.

So use %pF in the two remaining places that still tried to print out
function pointers by hand.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16 16:11:43 -07:00
Linus Torvalds
08d19f51f0 Merge branch 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (134 commits)
  KVM: ia64: Add intel iommu support for guests.
  KVM: ia64: add directed mmio range support for kvm guests
  KVM: ia64: Make pmt table be able to hold physical mmio entries.
  KVM: Move irqchip_in_kernel() from ioapic.h to irq.h
  KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
  KVM: Change is_mmio_pfn to kvm_is_mmio_pfn, and make it common for all archs
  KVM: Move device assignment logic to common code
  KVM: Device Assignment: Move vtd.c from arch/x86/kvm/ to virt/kvm/
  KVM: VMX: enable invlpg exiting if EPT is disabled
  KVM: x86: Silence various LAPIC-related host kernel messages
  KVM: Device Assignment: Map mmio pages into VT-d page table
  KVM: PIC: enhance IPI avoidance
  KVM: MMU: add "oos_shadow" parameter to disable oos
  KVM: MMU: speed up mmu_unsync_walk
  KVM: MMU: out of sync shadow core
  KVM: MMU: mmu_convert_notrap helper
  KVM: MMU: awareness of new kvm_mmu_zap_page behaviour
  KVM: MMU: mmu_parent_walk
  KVM: x86: trap invlpg
  KVM: MMU: sync roots on mmu reload
  ...
2008-10-16 15:36:00 -07:00
Linus Torvalds
e533b22705 Merge branch 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  do_generic_file_read: s/EINTR/EIO/ if lock_page_killable() fails
  softirq, warning fix: correct a format to avoid a warning
  softirqs, debug: preemption check
  x86, pci-hotplug, calgary / rio: fix EBDA ioremap()
  IO resources, x86: ioremap sanity check to catch mapping requests exceeding, fix
  IO resources, x86: ioremap sanity check to catch mapping requests exceeding the BAR sizes
  softlockup: Documentation/sysctl/kernel.txt: fix softlockup_thresh description
  dmi scan: warn about too early calls to dmi_check_system()
  generic: redefine resource_size_t as phys_addr_t
  generic: make PFN_PHYS explicitly return phys_addr_t
  generic: add phys_addr_t for holding physical addresses
  softirq: allocate less vectors
  IO resources: fix/remove printk
  printk: robustify printk, update comment
  printk: robustify printk, fix #2
  printk: robustify printk, fix
  printk: robustify printk

Fixed up conflicts in:
	arch/powerpc/include/asm/types.h
	arch/powerpc/platforms/Kconfig.cputype
manually.
2008-10-16 15:17:40 -07:00
Greg Kroah-Hartman
99178b036c Driver core: add bus_sort_breadthfirst() function
The PCI core wants to reorder the devices in the bus list.  So move this
functionality out of the pci core and into the driver core so that
anyone else can also do this if needed.  This also lets us change how
struct device is attached to drivers in the future without messing with
the PCI core.

Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-10-16 09:24:52 -07:00
Ingo Molnar
cc8e920aaf intr_remapping: fix typo
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 17:05:27 +02:00
Thomas Gleixner
d6c88a507e genirq: revert dynarray
Revert the dynarray changes. They need more thought and polishing.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-10-16 16:53:15 +02:00
Thomas Gleixner
2cc21ef843 genirq: remove sparse irq code
This code is not ready, but we need to rip it out instead of rebasing
as we would lose the APIC/IO_APIC unification otherwise.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-10-16 16:53:15 +02:00
Yinghai Lu
1f3addcf2d irq: error missed ifndef CONFIG_HAVE_SPARSE_IRQ, v2
need to change irq to int too

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:07 +02:00
Dean Nelson
e65ef88c20 irq: error missed ifndef CONFIG_HAVE_SPARSE_IRQ
An error return from create_irq_nr() is 0, but an error return from
create_irq() is -1.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:06 +02:00
Suresh Siddha
1c7d1bcad2 dmar: fix dmar_parse_dev() devices_cnt error condition check
It is possible that,
instead of PCI endpoint/sub-hierarchy structures, only IO-APIC/HPET
devices may be reported under device scope structures. Fix the devices_cnt
error check, which cares about only PCI structures and removes the
dma-remapping unit structure (dmaru) when the devices_cnt is zero
and include_all flag is not set.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:05 +02:00
Suresh Siddha
04e2ea6706 dmar: use list_for_each_entry_safe() in dmar_dev_scope_init()
In dmar_dev_scope_init(), functions called under for_each_drhd_unit()/
for_each_rmrr_units() can delete the list entry under some error conditions.

So we should use list_for_each_entry_safe() for safe traversal.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:05 +02:00
Yinghai Lu
74d04bd7dc dmar: initialize the return value in dmar_parse_dev()
initialize the return value in dmar_parse_dev()

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:05 +02:00
Yinghai Lu
f6dd5c3106 dmar: fix using early fixmap mapping for DMAR table parsing
Very early detection of the DMAR tables will setup fixmap mapping. For
parsing these tables later (while enabling dma and/or interrupt remapping),
early fixmap mapping shouldn't be used. Fix it by calling table detection
routines again, which will call generic apci_get_table() for setting up
the correct mapping.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:53:04 +02:00
Suresh Siddha
7ddfb650c7 sparseirq: fix intr-remap with dyn_array/nr_irqs changes]
In irq_2_iommu_alloc() and set_irte_irq(), irq_to_desc or
irq_2_iommu pointers may not be allocated. So use the routines
which will allocate them if they are not already allocated.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:59 +02:00
Yinghai Lu
6d50bc2683 x86: use 28 bits irq NR for pci msi/msix and ht
also print out irq no in /proc/interrups and /proc/stat in hex, so could
tell bus/dev/func.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:52 +02:00
Yinghai Lu
e420dfb40c x86: put irq_2_iommu pointer into irq_desc
when CONFIG_HAVE_SPARSE_IRQ
preallocate some irq_2_iommu entries, and use get_one_free_irq_2_iomm to
get new one and link to irq_desc if needed.

else will use dyn_array or static array.

v2: <= nr_irqs fix

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:52 +02:00
Yinghai Lu
5aeecaf490 irq: make irq2_iommu to use dyn_array
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:07 +02:00
Yinghai Lu
a06148c36d drivers/pci/ intr remapping: use nr_irqs
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:06 +02:00
Kay, Allen M
3871794642 VT-d: Changes to support KVM
This patch extends the VT-d driver to support KVM

[Ben: fixed memory pinning]
[avi: move dma_remapping.h as well]

Signed-off-by: Kay, Allen M <allen.m.kay@intel.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Acked-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15 14:24:08 +02:00
Ingo Molnar
6b2ada8210 Merge branches 'core/softlockup', 'core/softirq', 'core/resources', 'core/printk' and 'core/misc' into core-v28-for-linus 2008-10-15 12:48:44 +02:00
Benjamin Herrenschmidt
6dc6472581 Merge commit 'origin'
Manual fixup of conflicts on:

	arch/powerpc/include/asm/dcr-regs.h
	drivers/net/ibm_newemac/core.h
2008-10-15 11:31:54 +11:00
Ingo Molnar
d84705969f Merge branch 'x86/apic' into x86-v28-for-linus-phase4-B
Conflicts:
	arch/x86/kernel/apic_32.c
	arch/x86/kernel/apic_64.c
	arch/x86/kernel/setup.c
	drivers/pci/intel-iommu.c
	include/asm-x86/cpufeature.h
	include/asm-x86/dma-mapping.h
2008-10-11 20:17:36 +02:00
Matthew Wilcox
27663c5855 ACPI: Change acpi_evaluate_integer to support 64-bit on 32-bit kernels
As of version 2.0, ACPI can return 64-bit integers.  The current
acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms.
Change the argument to take a pointer to an acpi_integer so we support
64-bit integers on all platforms.

lenb: replaced use of "acpi_integer" with "unsigned long long"
lenb: fixed bug in acpi_thermal_trips_update()

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-11 02:47:33 -04:00
Ingo Molnar
725c25819e Merge branches 'core/iommu', 'x86/amd-iommu' and 'x86/iommu' into x86-v28-for-linus-phase3-B
Conflicts:
	arch/x86/kernel/pci-gart_64.c
	include/asm-x86/dma-mapping.h
2008-10-10 19:47:12 +02:00
Linus Torvalds
b5ff7df3df Check mapped ranges on sysfs resource files
This is loosely based on a patch by Jesse Barnes to check the user-space
PCI mappings though the sysfs interfaces.  Quoting Jesse's original
explanation:

  It's fairly common for applications to map PCI resources through sysfs.
  However, with the current implementation, it's possible for an application
  to map far more than the range corresponding to the resourceN file it
  opened.  This patch plugs that hole by checking the range at mmap time,
  similar to what is done on platforms like sparc64 in their lower level
  PCI remapping routines.

  It was initially put together to help debug the e1000e NVRAM corruption
  problem, since we initially thought an X driver might be walking past the
  end of one of its mappings and clobbering the NVRAM.  It now looks like
  that's not the case, but doing the check is still important for obvious
  reasons.

and this version of the patch differs in that it uses a helper function
to clarify the code, and does all the checks in pages (instead of bytes)
in order to avoid overflows when doing "<< PAGE_SHIFT" etc.

Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-02 18:52:51 -07:00
Alan Cox
e416de5e61 Export the ROM enable/disable helpers
.... so that they can be used by MTD map drivers. Lets us close #9420

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-26 18:59:05 -06:00
Ingo Molnar
15160716ee x86, pci-hotplug, calgary / rio: fix EBDA ioremap()
IO resource and ioremap debugging uncovered this ioremap() done
by drivers/pci/hotplug/ibmphp_ebda.c:

initcall pci_hotplug_init+0x0/0x41 returned 0 after 3 msecs
calling  ibmphp_init+0x0/0x360 @ 1
ibmphpd: IBM Hot Plug PCI Controller Driver version: 0.6
resource map sanity check conflict: 0x9f800 0xaf5e7 0x9f800 0x9ffff reserved
------------[ cut here ]------------
WARNING: at arch/x86/mm/ioremap.c:175 __ioremap_caller+0x5c/0x226()
Pid: 1, comm: swapper Not tainted 2.6.27-rc7-tip-00914-g347b10f-dirty #36038
 [<c013a72d>] warn_on_slowpath+0x41/0x68
 [<c0156f00>] ? __lock_acquire+0x9ba/0xa7f
 [<c012158c>] ? do_flush_tlb_all+0x0/0x59
 [<c015ac31>] ? smp_call_function_mask+0x74/0x17d
 [<c012158c>] ? do_flush_tlb_all+0x0/0x59
 [<c013b228>] ? printk+0x1a/0x1c
 [<c013f302>] ? iomem_map_sanity_check+0x82/0x8c
 [<c0a773e8>] ? _read_unlock+0x22/0x25
 [<c013f302>] ? iomem_map_sanity_check+0x82/0x8c
 [<c0154e17>] ? trace_hardirqs_off+0xb/0xd
 [<c0127731>] __ioremap_caller+0x5c/0x226
 [<c0156158>] ? trace_hardirqs_on+0xb/0xd
 [<c012767d>] ? iounmap+0x9d/0xa5
 [<c01279dd>] ioremap_nocache+0x15/0x17
 [<c0403c42>] ? ioremap+0xd/0xf
 [<c0403c42>] ioremap+0xd/0xf
 [<c0f1928f>] ibmphp_access_ebda+0x60/0xa0e
 [<c0f17f64>] ibmphp_init+0xb5/0x360
 [<c0101057>] do_one_initcall+0x57/0x138
 [<c0f17eaf>] ? ibmphp_init+0x0/0x360
 [<c0156158>] ? trace_hardirqs_on+0xb/0xd
 [<c0148d75>] ? __queue_work+0x2b/0x30
 [<c0f17eaf>] ? ibmphp_init+0x0/0x360
 [<c0f015a0>] kernel_init+0x17b/0x1e2
 [<c0f01425>] ? kernel_init+0x0/0x1e2
 [<c01178b3>] kernel_thread_helper+0x7/0x10
 =======================
---[ end trace a7919e7f17c0a725 ]---
initcall ibmphp_init+0x0/0x360 returned -19 after 144 msecs
calling  zt5550_init+0x0/0x6a @ 1

the problem is this code:

        io_mem = ioremap (ebda_seg<<4, 65000);

it assumes that the EBDA is 65000 bytes. But BIOS EBDA pointers are
at most 1K large.

_if_ the Rio code truly extends upon the customary EBDA size it needs
to iounmap() this memory and ioremap() it larger, once it knows it from
the generic descriptors that a Rio system is around.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-26 13:25:04 +02:00
Shaohua Li
1253f7aabf dock: introduce .uevent for devices in dock, eg libata
dock's uevent reported itself, not ata. It might be difficult to find an
ata device just according to a dock. This patch introduces docking ops
for each device in a dock. when docking, dock driver can send device
specific uevent. This should help dock station too (not just bay)

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-09-23 23:23:00 -04:00
Greg KH
b08508c40a PCI: fix compiler warnings in pci_get_subsys()
pci_get_subsys() changed in 2.6.26 so that the from pointer is modified
when the call is being invoked, so fix up the 'const' marking of it that
the compiler is complaining about.

Reported-by: Rufus & Azrael <rufus-azrael@numericable.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-16 15:52:08 -07:00
Sitsofe Wheeler
e1f4f59d1a PCI: Fix pcie_aspm=force
pcie_aspm=force did not work because aspm_force was being double negated
leading to the sanity check failing. Moving a bracket should fix this.

Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-16 09:09:56 -07:00
Jeremy Fitzhardinge
8308c54d7e generic: redefine resource_size_t as phys_addr_t
There's no good reason why a resource_size_t shouldn't just be a
physical address, so simply redefine it in terms of phys_addr_t.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-14 17:24:27 +02:00
Ingo Molnar
6e03f99803 Merge branch 'linus' into x86/iommu
Conflicts:
	lib/swiotlb.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-14 14:07:00 +02:00
Linus Torvalds
0cb60efd03 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: re-add debug prints for unmodified BARs
  PCI: fix pciehp_free_irq()
  PCI Hotplug: fakephp: fix deadlock... again
  PCI: Fix printk warnings in setup-bus.c
  PCI: Fix printk warnings in probe.c
  PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
2008-09-13 14:47:33 -07:00
Yinghai Lu
395a125c62 PCI: re-add debug prints for unmodified BARs
Print out for device BAR values before the kernel tries to update them.
Also make related output use KERN_DEBUG.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-12 16:34:46 -07:00
Adrian Bunk
a5827f40af PCI: fix pciehp_free_irq()
This patch fixes an obvious bug (loop was never entered) caused by
commit 820943b6fc
(pciehp: cleanup pcie_poll_cmd).

Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-10 10:50:57 -07:00
Ingo Molnar
e92b4fdacc Merge commit 'v2.6.27-rc6' into x86/iommu 2008-09-10 11:32:52 +02:00
Paul Mackerras
7e392f8c29 Merge branch 'linux-2.6' 2008-09-10 11:36:13 +10:00
Alex Chiang
48902025af PCI Hotplug: fakephp: fix deadlock... again
Commit fe99740cac (construct one
fakephp slot per PCI slot) introduced a regression, causing a
deadlock when removing a PCI device.

We also never actually removed the device from the PCI core.

So we:

	- remove the device from the PCI core
	- do not directly call remove_slot() to prevent deadlock

Yu Zhao reported and diagnosed this defect.

Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Yu Zhao <yu.zhao@intel.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:44:06 -07:00
Johann Felix Soden
53bc88701b PCI: Fix printk warnings in setup-bus.c
Again, the cleaned up code introduced some resource warnings:
drivers/pci/setup-bus.c: In function 'pci_bus_dump_res':
drivers/pci/setup-bus.c:542: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'resource_size_t'
drivers/pci/setup-bus.c:542: warning: format '%llx' expects type 'long long unsigned int', but argument 6 has type 'resource_size_t'

Fix those up too.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:43:38 -07:00
Johann Felix Soden
4ca8a7726f PCI: Fix printk warnings in probe.c
The cleaned up resource code in probe.c introduced some warnings:
drivers/pci/probe.c: In function 'pci_read_bridge_bases':
drivers/pci/probe.c:386: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'resource_size_t'
drivers/pci/probe.c:386: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:398: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'resource_size_t'
drivers/pci/probe.c:398: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:434: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t'
drivers/pci/probe.c:434: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'resource_size_t'

So fix them up.

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:43:32 -07:00
David Woodhouse
cbda1ba898 PCI/iommu: blacklist DMAR on Intel G31/G33 chipsets
Some BIOSes (the Intel DG33BU, for example) wrongly claim to have DMAR
when they don't. Avoid the resulting crashes when it doesn't work as
expected.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-09-09 11:42:43 -07:00
David Woodhouse
e51af66308 x86: blacklist DMAR on Intel G31/G33 chipsets
Some BIOSes (the Intel DG33BU, for example) wrongly claim to have DMAR
when they don't. Avoid the resulting crashes when it doesn't work as
expected.

I'd still be grateful if someone could test it on a DG33BU with the old
BIOS though, since I've killed mine. I tested the DMI version, but not
this one.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-05 20:20:25 +02:00
Linus Torvalds
5f17cfce57 PCI: fix pbus_size_mem() resource alignment for CardBus controllers
Commit 884525655d ("PCI: clean up resource
alignment management") changed the resource handling to mark how a
resource was aligned on a per-resource basis.

Thus, instead of looking at the resource number to determine whether it
was a bridge resource or a regular resource (they have different
alignment rules), we should just ask the resource for its alignment
directly.

The reason this broke only cardbus resources was that for the other
types of resources, the old way of deciding alignment actually still
happened to work.  But CardBus bridge resources had been changed by
commit 934b7024f0 ("Fix cardbus resource
allocation") to look more like regular resources than PCI bridge
resources from an alignment handling standpoint.

Reported-and-tested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-04 01:33:59 -07:00
Greg KH
ebca4f1bce PCI: fix reference leak in pci_get_dev_by_id()
Alex Chiang and Matthew Wilcox pointed out that pci_get_dev_by_id() does
not properly decrement the reference on the from pointer if it is
present, like the documentation for the function states it will.

It fixes a pretty bad leak in the hotplug core (we were leaking an
entire struct pci_dev for each function of each offlined card, the first
time around; subsequent onlines/offlines were ok).

Cc: Matthew Wilcox <matthew@wil.cx>
Cc: stable <stable@kernel.org>
Tested-by: Alex Chiang <achiang@hp.com>
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-21 15:22:46 -07:00
Alex Chiang
d6a9e9b40b PCI: shpchp: Rename duplicate slot name N as N-1, N-2, N-M...
Commit ef0ff95f13 (shpchp: fix slot name)
introduces the shpchp_slot_with_bus module parameter, which was intended
to help work around broken firmware that assigns the same name to multiple
slots.

Commit b3bd307c62 (shpchp: add message about
shpchp_slot_with_bus option) tells the user to use the above parameter
in the event of a name collision.

This approach is sub-optimal because it requires too much work from
the user.

Instead, let's rename the slot on behalf of the user. If firmware
assigns the name N to multiple slots, then:

	The first registered slot is assigned N
	The second registered slot is assigned N-1
	The third registered slot is assigned N-2
	The Mth registered slot becomes N-M

In the event we overflow the slot->name parameter, we report an
error to the user.

This is a temporary fix until the entire PCI core can be reworked
such that individual drivers no longer have to manage their own
slot names.

Tested-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-08-21 15:15:31 -07:00