13 Oct, 2007
1 commit
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* Introduce pci_domains_supported global, hardcoded to zero if
!CONFIG_PCI_DOMAINS.* Introduce 'nodomains' boot option, which clears pci_domains_supported
on platforms that enable it by default (x86, x86-64, and others when
they are converted to use this).Signed-off-by: Jeff Garzik
Cc: Andi Kleen
Signed-off-by: Greg Kroah-Hartman
23 Aug, 2007
2 commits
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[PATCH] PCI: make pcie_get_readrq visible in pci.h
pcie_get_readrq() is EXPORT_SYMBOL'ed, but its prototype is not
visible in pci.h, add it there.This is needed by some network drivers.
Signed-off-by: Brice Goglin
Acked-by: Peter Oruba
Signed-off-by: Greg Kroah-Hartman -
We need pci_bus_find_capability() in some arch/powerpc code so move
the prototype into a header accessible to it.Also kill the duplicate prototype for pci_bus_alloc_resource().
Signed-off-by: Kumar Gala
Signed-off-by: Greg Kroah-Hartman
01 Aug, 2007
1 commit
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Rename __pci_reenable_device() to pci_reenable_device().
Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
25 Jul, 2007
1 commit
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Some odd ACPI implementations choke if certain controller is disabled
when ACPI suspend is invoked but we still need to make sure the PCI
device is enabled during resume. Simply using pci_enable_device()
unbalances device enable count. Export __pci_reenable_device().Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
17 Jul, 2007
1 commit
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Before calling init_hwif_default, ide_unregister gets lock ide_lock and
disables irq. init_hwif_default calls ide_default_io_base which calls
pci_get_device and later pci_get_subsys tries to apply for semaphore
pci_bus_sem and goes to sleep.Mostly, pci_get_device should be called when irq is turned on.
ide_default_io_base just needs find if list pci_devices is empty.
Signed-off-by: Zhang Yanmin
Cc: Greg KH
Cc: Bartlomiej Zolnierkiewicz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Jul, 2007
1 commit
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* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Support multiple CPUs going through OS_MCA
[IA64] silence GCC ia64 unused variable warnings
[IA64] prevent MCA when performing MMIO mmap to PCI config space
[IA64] add sn_register_pmi_handler oemcall
[IA64] Stop bit for brl instruction
[IA64] SN: Correct ROM resource length for BIOS copy
[IA64] Don't set psr.ic and psr.i simultaneously
12 Jul, 2007
8 commits
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As suggested by Andrew, add pci_try_set_mwi(), which does not require
return-value checking.- add pci_try_set_mwi() without __must_check
- make it return 0 on success, errno if the "try" failed or error
- review callersSigned-off-by: Randy Dunlap
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
Signed-off-by: Rolf Eike Beer
Signed-off-by: Greg Kroah-Hartman -
Currently there are 97 occurrences where drivers need the pci
revision ID. We can do this once for all devices. Even the pci
subsystem needs the revision several times for quirks. The extra
u8 member pads out nicely in the pci_dev struct.Signed-off-by: Auke Kok
Signed-off-by: Greg Kroah-Hartman -
Remove pointless and never-called enable_wake() hook from pci_driver and
from documentation. Evidently this was introduced in the 2.4.6 kernel,
but there's no evidence it was ever called; and it was rarely implemented.Signed-off-by: David Brownell
Signed-off-by: Greg Kroah-Hartman -
We've now fixed up most users of pci_find_slot, and the remainder are either
hard and need someone with the hardware and info to work on it, or patches
exist but are not yet merged.Time therefore for some gentle encouragement
Signed-off-by: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman -
Currently pcibios_add_platform_entries() returns void, but could fail,
so instead have it return an int and propagate errors up to
pci_create_sysfs_dev_files().Fixes:
arch/powerpc/kernel/pci_64.c: In function 'pcibios_add_platform_entries':
arch/powerpc/kernel/pci_64.c:878: warning: ignoring return value of
'device_create_file', declared with attribute warn_unused_result
arch/powerpc/kernel/pci_32.c: In function 'pcibios_add_platform_entries':
arch/powerpc/kernel/pci_32.c:1043: warning: ignoring return value of
'device_create_file', declared with attribute warn_unused_resultSigned-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
I'm not sure if this is going to fly, weak symbols work on the compilers I'm
using, but whether they work for all of the affected architectures I can't say.
I've cc'ed as many arch maintainers/lists as I could find.But assuming they do, we can use a weak empty definition of
pcibios_add_platform_entries() to avoid having an empty definition on every
arch.Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
This patch introduces an interface to read and write PCI-X / PCI-Express
maximum read byte count values from PCI config space. There is a second
function that returns the maximum _designed_ read byte count, which marks the
maximum value for a device, since some drivers try to set MMRBC to the
highest allowed value and rely on such a function.Based on patch set by Stephen Hemminger
Cc: Stephen Hemminger
Signed-off-by: Peter Oruba
Signed-off-by: Greg Kroah-Hartman
10 Jul, 2007
1 commit
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On SN systems, when setting the IORESOURCE_ROM_BIOS_COPY resource flag,
the resource length should be set to the actual size of the ROM image
so that a call to pci_map_rom() returns the correct size.Signed-off-by: John Keller
Signed-off-by: Andrew Morton
Signed-off-by: Tony Luck
02 Jul, 2007
1 commit
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Provide stubs for more PCI bus/slot functions when CONFIG_PCI=n.
Signed-off-by: Randy Dunlap
Cc: Matt Domsch
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
03 May, 2007
6 commits
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Unless we finally completely remove it, people will always add new users.
Signed-off-by: Adrian Bunk
Signed-off-by: Greg Kroah-Hartman -
Now that we keep a list of msi descriptors, we don't need first_msi_irq
in the pci dev.If we somehow have zero MSIs configured list_entry() will give us weird
oopes or nice memory corruption bugs. So be paranoid. Add BUG_ONs and also
a check in pci_msi_check_device() to make sure nvec > 0.Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
The msi descriptors are linked together with what looks a lot like
a linked list, but isn't a struct list_head list. Make it one.The only complication is that previously we walked a list of irqs, and
got the descriptor for each with get_irq_msi(). Now we have a list of
descriptors and need to get the irq out of it, so it needs to be in the
actual struct msi_desc. We use 0 to indicate no irq is setup.Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
There are currently several places in the kernel where we kmalloc()
a struct pci_dev and start initialising it. It'd be preferable to
have an allocator so we can ensure the pci_dev is correctly initialised
in one place.Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
Balance declarations of pci_request_regions() and pci_release_regions() with
empty inline definitions for the CONFIG_PCI=n case -- otherwise my patch to
drivers/net/3c59x.c in the -mm tree doesn't compile. :-)Signed-off-by: Sergei Shtylyov
Signed-off-by: Greg Kroah-Hartman -
Adds a new API which can be used to issue various types
of PCI-E reset, including PCI-E warm reset and PCI-E hot reset.
This is needed for an ipr PCI-E adapter which does not properly
implement BIST. Running BIST on this adapter results in PCI-E
errors. The only reliable reset mechanism that exists on this
hardware is PCI Fundamental reset (warm reset). Since driving
this type of reset is architecture unique, this provides the
necessary hooks for architectures to add this support.Signed-off-by: Brian King
Acked-by: Linas Vepstas
Signed-off-by: Greg Kroah-Hartman
29 Apr, 2007
1 commit
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Implement pcim_iounmap_regions() - the opposite of
pcim_iomap_regions().Signed-off-by: Tejun heo
Signed-off-by: Jeff Garzik
28 Apr, 2007
1 commit
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Make multithreaded probing work per subsystem instead of per driver.
It doesn't make much sense to probe the same device for multiple drivers in
parallel (after all, only one driver can bind to the device). Instead, create
a probing thread for each device that probes the drivers one after another.
Also make the decision to use multi-threaded probe per bus instead of per
device and adapt the pci code.Signed-off-by: Cornelia Huck
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
13 Mar, 2007
1 commit
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Because we do not reserve space for the pci-x and pci-e state in struct
pci dev we need to dynamically allocate it. However because we need
to support restore being called multiple times after a single save
it is never safe to free the buffers we have allocated to hold the
state.So this patch modifies the save routines to first check to see
if we have already allocated a state buffer before allocating
a new one. Then the restore routines are modified to not free
the state after restoring it. Simple and it fixes some subtle
error path handling bugs, that are hard to test for.Signed-off-by: Eric W. Biederman
Signed-off-by: Greg Kroah-Hartman
Acked-by: Auke Kok
Signed-off-by: Linus Torvalds
05 Mar, 2007
1 commit
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In some cases when we are not using msi we need a way to ensure that the
hardware does not have an msi capability enabled. Currently the code has been
calling disable_msi_mode to try and achieve that. However disable_msi_mode
has several other side effects and is only available when msi support is
compiled in so it isn't really appropriate.Instead this patch implements pci_msi_off which disables all msi and msix
capabilities unconditionally with no additional side effects.pci_disable_device was redundantly clearing the bus master enable flag and
clearing the msi enable bit. A device that is not allowed to perform bus
mastering operations cannot generate intx or msi interrupt messages as those
are essentially a special case of dma, and require bus mastering. So the call
in pci_disable_device to disable msi capabilities was redundant.quirk_pcie_pxh also called disable_msi_mode and is updated to use pci_msi_off.
Signed-off-by: Eric W. Biederman
Cc: Michael Ellerman
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Feb, 2007
1 commit
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CARDBUS_MEM_SIZE was increased to 64MB on 2.6.20-rc2, but larger size might
result in allocation failure for the reserving itself on some platforms
(for example typical 32bit MIPS). Make it (and CARDBUS_IO_SIZE too)
customizable by "pci=" option for such platforms.Signed-off-by: Atsushi Nemoto
Cc: Daniel Ritz
Cc: Ralf Baechle
Cc: Ivan Kokshaysky
Cc: Dominik Brodowski
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman
12 Feb, 2007
1 commit
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* Split the implementation-agnostic stuff in separate files.
* Make sure that targets using non-default request_irq() pull
kernel/irq/devres.o
* Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive;
allow architectures to turn them off (we needed these symbols anyway for
dependencies of quite a few drivers).
* protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT.Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
10 Feb, 2007
1 commit
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Implement device resource management, in short, devres. A device
driver can allocate arbirary size of devres data which is associated
with a release function. On driver detach, release function is
invoked on the devres data, then, devres data is freed.devreses are typed by associated release functions. Some devreses are
better represented by single instance of the type while others need
multiple instances sharing the same release function. Both usages are
supported.devreses can be grouped using devres group such that a device driver
can easily release acquired resources halfway through initialization
or selectively release resources (e.g. resources for port 1 out of 4
ports).This patch adds devres core including documentation and the following
managed interfaces.* alloc/free : devm_kzalloc(), devm_kzfree()
* IO region : devm_request_region(), devm_release_region()
* IRQ : devm_request_irq(), devm_free_irq()
* DMA : dmam_alloc_coherent(), dmam_free_coherent(),
dmam_declare_coherent_memory(), dmam_pool_create(),
dmam_pool_destroy()
* PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed()
* iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(),
devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(),
pcim_iomap(), pcim_iounmap()Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
08 Feb, 2007
9 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (41 commits)
Revert "PCI: remove duplicate device id from ata_piix"
msi: Make MSI useable more architectures
msi: Kill the msi_desc array.
msi: Remove attach_msi_entry.
msi: Fix msi_remove_pci_irq_vectors.
msi: Remove msi_lock.
msi: Kill msi_lookup_irq
MSI: Combine pci_(save|restore)_msi/msix_state
MSI: Remove pci_scan_msi_device()
MSI: Replace pci_msi_quirk with calls to pci_no_msi()
PCI: remove duplicate device id from ipr
PCI: remove duplicate device id from ata_piix
PCI: power management: remove noise on non-manageable hw
PCI: cleanup MSI code
PCI: make isa_bridge Alpha-only
PCI: remove quirk_sis_96x_compatible()
PCI: Speed up the Intel SMBus unhiding quirk
PCI Quirk: 1k I/O space IOBL_ADR fix on P64H2
shpchp: delete trailing whitespace
shpchp: remove DBG_XXX_ROUTINE
... -
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
Acked-by: Ingo Molnar
Signed-off-by: Greg Kroah-Hartman -
pci_scan_msi_device() doesn't do anything anymore, so remove it.
Signed-off-by: Michael Ellerman
Signed-off-by: Greg Kroah-Hartman -
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
Signed-off-by: Greg Kroah-Hartman -
On Fri, Nov 17, 2006 at 09:32:36AM -0500, Alan Cox wrote:
>
> Soon we should deprecate pci_find_device as wellSo 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
Acked-by: Alan Cox
Signed-off-by: Greg Kroah-Hartman -
This patch removes the no longer used pci_find_device_reverse().
Signed-off-by: Adrian Bunk
Acked-by: Alan Cox
Signed-off-by: Greg Kroah-Hartman -
Add very simple routine to indicate the pci channel error state.
Signed-off-by: Linas Vepstas
Signed-off-by: Greg Kroah-Hartman -
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
Signed-off-by: Hidetoshi Seto
Cc: Inaky Perez-Gonzalez
Signed-off-by: Greg Kroah-Hartman -
This adds the module name to all PCI drivers, if they are built into the
kernel or not. It will show up in /sys/modules/MODULE_NAME/drivers/It also fixes up the IDE core, which was calling __pci_register_driver()
directly.Cc: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
21 Dec, 2006
1 commit
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I don't see any good reason for exporting device IDs to userspace.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Greg Kroah-Hartman