Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=00c2ae35bd50664bcd841becc6efceef8aa5d074
Commit: 00c2ae35bd50664bcd841becc6efceef8aa5d074
Parent: 02bbc0f09c90cefdb2837605c96a66c5ce4ba2e1
Author: Brian King <[EMAIL PROTECTED]>
AuthorDate: Tue May 8 08:04:05 2007 +1000
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Tue May 8 13:40:31 2007 +1000
[POWERPC] Add powerpc PCI-E reset API implementation
Adds the pSeries platform implementation for a new PCI 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).
Acked-by: Linas Vepstas <[EMAIL PROTECTED]>
Signed-off-by: Brian King <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/pseries/eeh.c | 30 ++++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/eeh.c
b/arch/powerpc/platforms/pseries/eeh.c
index 48fbd44..63e2306 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -580,6 +580,36 @@ rtas_pci_slot_reset(struct pci_dn *pdn, int state)
}
/**
+ * pcibios_set_pcie_slot_reset - Set PCI-E reset state
+ * @dev: pci device struct
+ * @state: reset state to enter
+ *
+ * Return value:
+ * 0 if success
+ **/
+int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state
state)
+{
+ struct device_node *dn = pci_device_to_OF_node(dev);
+ struct pci_dn *pdn = PCI_DN(dn);
+
+ switch (state) {
+ case pcie_deassert_reset:
+ rtas_pci_slot_reset(pdn, 0);
+ break;
+ case pcie_hot_reset:
+ rtas_pci_slot_reset(pdn, 1);
+ break;
+ case pcie_warm_reset:
+ rtas_pci_slot_reset(pdn, 3);
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ return 0;
+}
+
+/**
* rtas_set_slot_reset -- assert the pci #RST line for 1/4 second
* @pdn: pci device node to be reset.
*
-
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