linux-toradex.git/drivers/pci/hotplug/Kconfig, branch v4.9.107

PCI/hotplug: PowerPC PowerNV PCI hotplug driver

2016-06-21T05:30:58+00:00

This adds standalone driver to support PCI hotplug for PowerPC PowerNV
platform that runs on top of skiboot firmware. The firmware identifies
hotpluggable slots and marked their device tree node with proper
"ibm,slot-pluggable" and "ibm,reset-by-firmware". The driver scans
device tree nodes to create/register PCI hotplug slot accordingly.

The PCI slots are organized in fashion of tree, which means one
PCI slot might have parent PCI slot and parent PCI slot possibly
contains multiple child PCI slots. At the plugging time, the parent
PCI slot is populated before its children. The child PCI slots are
removed before their parent PCI slot can be removed from the system.

If the skiboot firmware doesn't support slot status retrieval, the PCI
slot device node shouldn't have property "ibm,reset-by-firmware". In
that case, none of valid PCI slots will be detected from device tree.
The skiboot firmware doesn't export the capability to access attention
LEDs yet and it's something for TBD.

Signed-off-by: Gavin Shan 
Acked-by: Bjorn Helgaas 
Signed-off-by: Michael Ellerman

PCI: Fix whitespace, capitalization, and spelling errors

2013-11-14T18:28:18+00:00

Fix whitespace, capitalization, and spelling errors.  No functional change.
I know "busses" is not an error, but "buses" was more common, so I used it
consistently.

Signed-off-by: Marta Rybczynska  (pci_reset_bridge_secondary_bus())
Signed-off-by: Bjorn Helgaas 
Acked-by: Rafael J. Wysocki

s390/pci/hotplug: convert to be builtin only

2013-08-30T06:57:07+00:00

Convert s390' pci hotplug to be builtin only, with no module option.

Suggested-by: Bjorn Helgaas 
Signed-off-by: Sebastian Ott 
Signed-off-by: Martin Schwidefsky

PCI: hotplug: Convert to be builtin only, not modular

2013-07-25T20:11:06+00:00

Convert CONFIG_HOTPLUG_PCI from tristate to bool.  This only affects
the hotplug core; several of the hotplug drivers can still be modules.

Signed-off-by: Bjorn Helgaas 
Acked-by: Rafael J. Wysocki 
Acked-by: Yinghai Lu

Finally eradicate CONFIG_HOTPLUG

2013-06-03T21:20:18+00:00

Ever since commit 45f035ab9b8f ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off.  Remove all the remaining references to it.

Cc: Russell King 
Cc: Doug Thompson 
Cc: Bjorn Helgaas 
Cc: Steven Whitehouse 
Cc: Arnd Bergmann 
Cc: Pavel Machek 
Cc: "Rafael J. Wysocki" 
Cc: Andrew Morton 
Signed-off-by: Stephen Rothwell 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Hans Verkuil 
Signed-off-by: Greg Kroah-Hartman

PCI: acpiphp: Convert acpiphp to be builtin only, not modular

2013-04-12T21:38:25+00:00

Convert acpiphp to be builtin only, with no module option.

Previously, when HOTPLUG_PCI_ACPI=m, users could disable acpiphp by
removing the module or preventing it from loading.  That can't be done
if acpiphp is builtin statically, so this adds an "acpiphp.disable"
kernel parameter.  If a user needs to use this parameter, it is a bug,
and we want to hear about it.

[bhelgaas: fold in acpiphp.disable here, remove documentation]
Signed-off-by: Jiang Liu 
Signed-off-by: Bjorn Helgaas

s390/pci: PCI hotplug support via SCLP

2012-11-30T16:47:25+00:00

Add SCLP PCI configure/deconfigure and implement a PCI hotplug
controller (s390_pci_hpc). The hotplug controller creates a slot
for every PCI function in stand-by or configured state. The PCI
functions are named after the PCI function ID (fid). By writing to
the power attribute in /sys/bus/pci/slots//power the PCI function
is moved to stand-by or configured state. If moved to the configured
state the device is automatically scanned by the s390 PCI layer.

Signed-off-by: Jan Glauber 
Signed-off-by: Martin Schwidefsky

PCI: Remove the fakephp driver

2012-08-24T20:32:07+00:00

The fakephp driver was scheduled for removal in 2011.

Fakephp presented /sys/bus/pci/slots/.../power files for every PCI
function.  Writing "0" to one of these files logically removed the device
from the system.  The PCI core now provides the same functionality with
/sys/bus/pci/devices/.../remove.

Signed-off-by: Bjorn Helgaas

PCI: drivers/pci/slot.c should depend on CONFIG_SYSFS

2009-06-18T20:57:24+00:00

There is no way to interact with a physical PCI slot without
sysfs, so encode the dependency and prevent this build error:

	drivers/pci/slot.c: In function 'pci_hp_create_module_link':
	drivers/pci/slot.c:327: error: 'module_kset' undeclared

This patch _should_ make pci-sysfs.o depend on CONFIG_SYSFS too,
but we cannot (yet) because the PCI core merrily assumes the
existence of sysfs:

	drivers/built-in.o: In function `pci_bus_add_device':
	drivers/pci/bus.c:89: undefined reference to `pci_create_sysfs_dev_files'
	drivers/built-in.o: In function `pci_stop_dev':
	drivers/pci/remove.c:24: undefined reference to `pci_remove_sysfs_dev_files'

So do the minimal bit for now and figure out how to untangle it
later.

Reported-by: Randy Dunlap 
Acked-by: Randy Dunlap 
Reported-by: Stephen Rothwell 
Fix-suggested-by: Matthew Wilcox 
Signed-off-by: Alex Chiang 
Signed-off-by: Jesse Barnes

PCI Hotplug: cpqphp: don't use pci_find_slot()

2009-06-11T19:04:16+00:00

Convert uses of pci_find_slot to modern API.

In the conversion sites, we end up calling pci_dev_put() right away.

This may seem like it misses the entire point of doing something like
pci_get_bus_and_slot(), since we drop the reference so soon, but it turns
out we don't actually do much with the returned pci_dev.

I plan on untangling cpqphp further, but clearly cpqphp never worried too
much about a properly refcounted pci_dev anyway. For now, this conversion
seems reasonable, as it gets rid of the last in-tree caller of pci_find_slot.

Signed-off-by: Alex Chiang 
Signed-off-by: Jesse Barnes