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authorSteve French <sfrench@us.ibm.com>2005-11-10 15:34:57 -0800
committerSteve French <sfrench@us.ibm.com>2005-11-10 15:34:57 -0800
commit9551583e55e26a0940894828c2d1066e9276325e (patch)
treeff412949400da94aa788bd094ced2138e9175935 /include/asm-ppc64/eeh.h
parenta2653ebab3a96c6e6183360821faa492c1f88c3f (diff)
parent985834a1c3a2e9639145bd8ea16af6e25f2143ad (diff)
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'include/asm-ppc64/eeh.h')
-rw-r--r--include/asm-ppc64/eeh.h46
1 files changed, 13 insertions, 33 deletions
diff --git a/include/asm-ppc64/eeh.h b/include/asm-ppc64/eeh.h
index 40c8eb57493..89f26ab3190 100644
--- a/include/asm-ppc64/eeh.h
+++ b/include/asm-ppc64/eeh.h
@@ -1,4 +1,4 @@
-/*
+/*
* eeh.h
* Copyright (C) 2001 Dave Engebretsen & Todd Inglett IBM Corporation.
*
@@ -6,12 +6,12 @@
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -27,8 +27,6 @@
struct pci_dev;
struct device_node;
-struct device_node;
-struct notifier_block;
#ifdef CONFIG_EEH
@@ -37,6 +35,10 @@ struct notifier_block;
#define EEH_MODE_NOCHECK (1<<1)
#define EEH_MODE_ISOLATED (1<<2)
+/* Max number of EEH freezes allowed before we consider the device
+ * to be permanently disabled. */
+#define EEH_MAX_ALLOWED_FREEZES 5
+
void __init eeh_init(void);
unsigned long eeh_check_failure(const volatile void __iomem *token,
unsigned long val);
@@ -59,36 +61,14 @@ void eeh_add_device_late(struct pci_dev *);
* eeh_remove_device - undo EEH setup for the indicated pci device
* @dev: pci device to be removed
*
- * This routine should be when a device is removed from a running
- * system (e.g. by hotplug or dlpar).
+ * This routine should be called when a device is removed from
+ * a running system (e.g. by hotplug or dlpar). It unregisters
+ * the PCI device from the EEH subsystem. I/O errors affecting
+ * this device will no longer be detected after this call; thus,
+ * i/o errors affecting this slot may leave this device unusable.
*/
void eeh_remove_device(struct pci_dev *);
-#define EEH_DISABLE 0
-#define EEH_ENABLE 1
-#define EEH_RELEASE_LOADSTORE 2
-#define EEH_RELEASE_DMA 3
-
-/**
- * Notifier event flags.
- */
-#define EEH_NOTIFY_FREEZE 1
-
-/** EEH event -- structure holding pci slot data that describes
- * a change in the isolation status of a PCI slot. A pointer
- * to this struct is passed as the data pointer in a notify callback.
- */
-struct eeh_event {
- struct list_head list;
- struct pci_dev *dev;
- struct device_node *dn;
- int reset_state;
-};
-
-/** Register to find out about EEH events. */
-int eeh_register_notifier(struct notifier_block *nb);
-int eeh_unregister_notifier(struct notifier_block *nb);
-
/**
* EEH_POSSIBLE_ERROR() -- test for possible MMIO failure.
*
@@ -129,7 +109,7 @@ static inline void eeh_remove_device(struct pci_dev *dev) { }
#define EEH_IO_ERROR_VALUE(size) (-1UL)
#endif /* CONFIG_EEH */
-/*
+/*
* MMIO read/write operations with EEH support.
*/
static inline u8 eeh_readb(const volatile void __iomem *addr)