lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

PCI: Introduce INTx check & mask API

Browse Source 
These new PCI services allow to probe for 2.3-compliant INTx masking
support and then use the feature from PCI interrupt handlers. The
services are properly synchronized with concurrent config space access
via sysfs or on device reset.

This enables generic PCI device drivers like uio_pci_generic or KVM's
device assignment to implement the necessary kernel-side IRQ handling
without any knowledge about device-specific interrupt status and control
registers.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Jan Kiszka
2011-11-04 09:46:00 +01:00
committed by Jesse Barnes
parent fb51ccbf21
commit a2e27787f8
4 changed files with 116 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pci/access.c
View File

@@ -13,7 +13,7 @@
* configuration space.
*/
static DEFINE_RAW_SPINLOCK(pci_lock);
DEFINE_RAW_SPINLOCK(pci_lock);
/*
* Wrappers for all PCI configuration access functions. They just check