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PCI: support for PCI Express fundamental reset 

This is the first of three patches that implement a bit field that PCI
Express device drivers can use to indicate they need a fundamental reset
during error recovery.

By default, the EEH framework on powerpc does what's known as a "hot
reset" during recovery of a PCI Express device.  We've found a case
where the device needs a "fundamental reset" to recover properly.  The
current PCI error recovery and EEH frameworks do not support this
distinction.

The attached patch (courtesy of Richard Lary) adds a bit field to
pci_dev that indicates whether the device requires a fundamental reset
during recovery.

These patches supersede the previously submitted patch that implemented
a fundamental reset bit field.

Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Signed-off-by: Richard Lary <rlary@us.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Mike Mason 2009-07-30 15:33:21 -07:00 committed by Jesse Barnes
parent deb2d2ecd4
commit 260d703adc
1 changed files with 1 additions and 0 deletions
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1
include/linux/pci.h
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@ -273,6 +273,7 @@ struct pci_dev {
unsigned int ari_enabled:1; /* ARI forwarding */
unsigned int is_managed:1;
unsigned int is_pcie:1;
unsigned int needs_freset:1; /* Dev requires fundamental reset */
unsigned int state_saved:1;
unsigned int is_physfn:1;
unsigned int is_virtfn:1;