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path: root/drivers/pci/hotplug/s390_pci_hpc.c (follow)
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2014-07-22s390/pci: fix kmsg componentGerald Schaefer1-2/+2
KMSG_COMPONENT has to be defined instead of COMPONENT. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-04-14PCI: Remove unnecessary includes of <linux/init.h>Paul Gortmaker1-1/+0
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-01-14PCI: hotplug: Use global PCI rescan-remove lockingRafael J. Wysocki1-1/+3
Multiple race conditions are possible between PCI hotplug and the generic PCI bus rescan and device removal that can be triggered via sysfs. To avoid those race conditions make PCI hotplug use global PCI rescan-remove locking. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-10-24s390/pci: message cleanupSebastian Ott1-4/+2
Cleanup arch specific pci messages. Remove unhelpful messages and replace others with entries in the debugfs. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-08-30s390/pci: add recover sysfs knobSebastian Ott1-2/+0
Add an arch specific attribute to recover a pci function from an error state or config space blockage. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-08-30s390/pci/hotplug: convert to be builtin onlySebastian Ott1-59/+2
Convert s390' pci hotplug to be builtin only, with no module option. Suggested-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-06-26s390/pci: remove pdev during unplugSebastian Ott1-3/+4
The disable slot implementation on s390 currently just detaches the pci function from the partition - without informing the pci layer. Fix this by calling pci_stop_and_remove_bus_device prior to the operation. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-06-26s390/pci: cleanup hotplug codeSebastian Ott1-13/+40
Provide wrappers for the [de]configure operations, add some error handling, and use pci_scan_slot instead of pci_scan_single_device. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-17s390/pci: do not modify function handlesSebastian Ott1-5/+4
Don't modify function handles to get a disabled handle - call clp_disable_fh. With this change we also do no longer deconfigure enabled functions. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-17s390/pci: debug device statesSebastian Ott1-0/+3
Use the debugfs to keep track of a pci function's status changes. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-14s390/pci: fix hotplug module initSebastian Ott1-33/+25
Loading the pci hotplug module when no devices are present will fail but unfortunately some hotplug callbacks stay registered to the pci bus level. Fix this by not letting module loading fail when no pci devices are present and provide proper {de}registration functions for these callbacks. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-14s390/pci: rename pci_probe to s390_pci_probeHeiko Carstens1-1/+1
pci_probe is too generic and has a name clash with other common code parts. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-11-30s390/pci: PCI hotplug support via SCLPJan Glauber1-0/+252
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/<fid>/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 <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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