summaryrefslogtreecommitdiffstats
path: root/include/linux/pci.h
diff options
context:
space:
mode:
authorBrian King <brking@linux.vnet.ibm.com>2007-04-06 16:39:36 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2007-05-02 19:02:34 -0700
commitf7bdd12d234d9064bd0aa1b5610508959120a9b4 (patch)
tree16f0e3f1762885c1e9b55249f79920be94b19ff6 /include/linux/pci.h
parent988cbb15e00e6f924d052874b40c6a5447f9fdd7 (diff)
downloadop-kernel-dev-f7bdd12d234d9064bd0aa1b5610508959120a9b4.zip
op-kernel-dev-f7bdd12d234d9064bd0aa1b5610508959120a9b4.tar.gz
pci: New PCI-E reset API
Adds a new API which can be used to issue various types of PCI-E reset, including PCI-E warm reset and PCI-E hot reset. This is needed for an ipr PCI-E adapter which does not properly implement BIST. Running BIST on this adapter results in PCI-E errors. The only reliable reset mechanism that exists on this hardware is PCI Fundamental reset (warm reset). Since driving this type of reset is architecture unique, this provides the necessary hooks for architectures to add this support. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Acked-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9724910..3aba02a 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -96,6 +96,19 @@ enum pci_channel_state {
pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
};
+typedef unsigned int __bitwise pcie_reset_state_t;
+
+enum pcie_reset_state {
+ /* Reset is NOT asserted (Use to deassert reset) */
+ pcie_deassert_reset = (__force pcie_reset_state_t) 1,
+
+ /* Use #PERST to reset PCI-E device */
+ pcie_warm_reset = (__force pcie_reset_state_t) 2,
+
+ /* Use PCI-E Hot Reset to reset device */
+ pcie_hot_reset = (__force pcie_reset_state_t) 3
+};
+
typedef unsigned short __bitwise pci_bus_flags_t;
enum pci_bus_flags {
PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
@@ -532,6 +545,7 @@ static inline int pci_is_managed(struct pci_dev *pdev)
void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
+int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
#define HAVE_PCI_SET_MWI
int __must_check pci_set_mwi(struct pci_dev *dev);
void pci_clear_mwi(struct pci_dev *dev);
OpenPOWER on IntegriCloud