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authorKleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>2014-06-04 10:57:51 -0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-09 14:14:27 -0700
commitfb145456fa4f4311f90703aeee058bab3b274bf8 (patch)
tree980ae85a3c35b8b574dddeaf96bf84d41dbb83d3 /drivers/misc/genwqe/Kconfig
parentc1f732ad767e37bd1d41043cbdefc0874b4d05e5 (diff)
downloadlinux-fb145456fa4f4311f90703aeee058bab3b274bf8.tar.bz2
GenWQE: Add support for EEH error recovery
This patch implements the callbacks and functions necessary to have EEH recovery support. It adds a config option to enable or disable explicit calls to trigger platform specific mechanisms on error recovery paths. This option is enabled by default only on PPC64 systems and can be overritten via debugfs. If this option is enabled, on the error recovery path the driver will call pci_channel_offline() to check for error condition and issue non-raw MMIO reads to trigger early EEH detection in case of hardware failures. This is necessary since the driver MMIO helper funtions use raw accessors. Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com> Acked-by: Frank Haverkamp <haver@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/genwqe/Kconfig')
-rw-r--r--drivers/misc/genwqe/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/genwqe/Kconfig b/drivers/misc/genwqe/Kconfig
index 6069d8cd79d7..4c0a033cbfdb 100644
--- a/drivers/misc/genwqe/Kconfig
+++ b/drivers/misc/genwqe/Kconfig
@@ -11,3 +11,9 @@ menuconfig GENWQE
Enables PCIe card driver for IBM GenWQE accelerators.
The user-space interface is described in
include/linux/genwqe/genwqe_card.h.
+
+config GENWQE_PLATFORM_ERROR_RECOVERY
+ int "Use platform recovery procedures (0=off, 1=on)"
+ depends on GENWQE
+ default 1 if PPC64
+ default 0