linux-toradex.git/include/linux/pci.h, branch v2.6.28.9 Linux kernel for Apalis and Colibri modules PCI: return error on failure to read PCI ROMs 2009-02-12T17:50:35+00:00 Timothy S. Nelson wayland@wayland.id.au 2009-01-29T19:12:47+00:00 63f9bdba0ba2bfb1853a3e5883ec7ac6912b3c09 commit 97c44836cdec1ea713a15d84098a1a908157e68f upstream. This patch makes the ROM reading code return an error to user space if the size of the ROM read is equal to 0. The patch also emits a warnings if the contents of the ROM are invalid, and documents the effects of the "enable" file on ROM reading. Signed-off-by: Timothy S. Nelson <wayland@wayland.id.au> Acked-by: Alex Villacis-Lasso <a_villacis@palosanto.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
commit 97c44836cdec1ea713a15d84098a1a908157e68f upstream.

This patch makes the ROM reading code return an error to user space if
the size of the ROM read is equal to 0.

The patch also emits a warnings if the contents of the ROM are invalid,
and documents the effects of the "enable" file on ROM reading.

Signed-off-by: Timothy S. Nelson <wayland@wayland.id.au>
Acked-by: Alex Villacis-Lasso <a_villacis@palosanto.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PCI: annotate return value of pci_ioremap_bar with __iomem 2008-11-03T22:31:18+00:00 Harvey Harrison harvey.harrison@gmail.com 2008-11-02T21:32:43+00:00 a7b930cdf8ec790c85f81416c87f7c066679d373 Was missing from the initial patch. Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 
Was missing from the initial patch.

Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI: add routines for debugging and handling lost interrupts 2008-10-23T21:54:18+00:00 James Bottomley James.Bottomley@HansenPartnership.com 2008-08-03T18:02:12+00:00 388c8c16abafc2e74dff173b5de9ee519ea8d32f We're getting a lot of storage drivers blamed for interrupt misrouting issues. This patch provides a standard way of reporting the problem ... and, if possible, correcting it. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 
We're getting a lot of storage drivers blamed for interrupt misrouting
issues.  This patch provides a standard way of reporting the problem
... and, if possible, correcting it.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI: don't export linux/io.h from pci.h 2008-10-22T23:42:46+00:00 Stephen Rothwell sfr@canb.auug.org.au 2008-10-22T02:39:55+00:00 1388cc964e680c1086ca0edae35be094cb29d51e Move the include of io.h down into the #ifdef __KERNEL__ protected region. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 
Move the include of io.h down into the #ifdef __KERNEL__ protected
region.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI, PCI Hotplug: introduce slot_name helpers 2008-10-22T23:42:40+00:00 Alex Chiang achiang@hp.com 2008-10-20T23:41:07+00:00 0ad772ec464d3fcf9d210836b97e654f393606c4 In preparation for cleaning up the various hotplug drivers such that they don't have to manage their own 'name' parameters anymore, we provide the following convenience functions: pci_slot_name() hotplug_slot_name() These helpers will be used by individual hotplug drivers. 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> 
In preparation for cleaning up the various hotplug drivers
such that they don't have to manage their own 'name' parameters
anymore, we provide the following convenience functions:

	pci_slot_name()
	hotplug_slot_name()

These helpers will be used by individual hotplug drivers.

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>
PCI: update pci_create_slot() to take a 'hotplug' param 2008-10-22T23:42:38+00:00 Alex Chiang achiang@hp.com 2008-10-20T23:40:52+00:00 828f37683e6d3ab5912989df0d04201db7ad798e 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> 
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>
PCI: rename pci_update_slot_number to pci_renumber_slot 2008-10-22T23:42:37+00:00 Alex Chiang achiang@hp.com 2008-10-20T23:40:47+00:00 d25b7c8d6ba2735602003d75a28894772fe8ad6a 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> 
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>
PCI: include io.h in pci.h so that ioremap_nocache is defined 2008-10-22T23:42:36+00:00 Jesse Barnes jbarnes@virtuousgeek.org 2008-10-21T17:09:05+00:00 64c7f63c1b5c26f057c26f7920f397fed2f590d9 Ingo pointed out that the m32r build was broken by pci_ioremap. It looks like some files include pci.h w/o including io.h. The latter defines ioremap_* if present, so it makes sense to include it in pci.h now that we have pci_ioremap there. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 
Ingo pointed out that the m32r build was broken by pci_ioremap.  It looks like
some files include pci.h w/o including io.h.  The latter defines ioremap_* if
present, so it makes sense to include it in pci.h now that we have pci_ioremap
there.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI: add support for function level reset 2008-10-22T23:42:35+00:00 Sheng Yang sheng@linux.intel.com 2008-10-21T09:38:25+00:00 8dd7f8036c123296fc4214f9d8810eb485570422 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> 
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>
PCI: fix pci_ioremap_bar() on s390 2008-10-20T18:28:34+00:00 Heiko Carstens heiko.carstens@de.ibm.com 2008-10-20T17:45:43+00:00 96499871f45b9126157b1a5c512d6e30f1635225 s390 doesn't have ioremap_*, so protect the definition of the new pci_ioremap_bar function with CONFIG_HAS_IOMEM to avoid build breakage. Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 
s390 doesn't have ioremap_*, so protect the definition of the new
pci_ioremap_bar function with CONFIG_HAS_IOMEM to avoid build breakage.

Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>