1 files changed, 37 insertions, 25 deletions

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index fab7743c2640..9983c3d26bca 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -25,6 +25,7 @@
 #include <linux/list.h>
 #include <linux/string.h>
 #include <linux/time.h>
+#include <linux/atomic.h>
 
 struct pci_dev;
 struct pci_bus;
@@ -33,10 +34,11 @@ struct device_node;
 #ifdef CONFIG_EEH
 
 /* EEH subsystem flags */
-#define EEH_ENABLED             0x1     /* EEH enabled          */
-#define EEH_FORCE_DISABLED      0x2     /* EEH disabled         */
-#define EEH_PROBE_MODE_DEV      0x4     /* From PCI device      */
-#define EEH_PROBE_MODE_DEVTREE  0x8     /* From device tree     */
+#define EEH_ENABLED             0x01    /* EEH enabled          */
+#define EEH_FORCE_DISABLED      0x02    /* EEH disabled         */
+#define EEH_PROBE_MODE_DEV      0x04    /* From PCI device      */
+#define EEH_PROBE_MODE_DEVTREE  0x08    /* From device tree     */
+#define EEH_ENABLE_IO_FOR_LOG   0x10    /* Enable IO for log    */
 
 /*
  * Delay for PE reset, all in ms
@@ -84,7 +86,9 @@ struct eeh_pe {
         int freeze_count;               /* Times of froze up            */
         struct timeval tstamp;          /* Time on first-time freeze    */
         int false_positives;            /* Times of reported #ff's      */
+        atomic_t pass_dev_cnt;          /* Count of passed through devs */
         struct eeh_pe *parent;          /* Parent PE                    */
+        void *data;                     /* PE auxillary data            */
         struct list_head child_list;    /* Link PE to the child list    */
         struct list_head edevs;         /* Link list of EEH devices     */
         struct list_head child;         /* Child PEs                    */
@@ -93,6 +97,11 @@ struct eeh_pe {
 #define eeh_pe_for_each_dev(pe, edev, tmp) \
                 list_for_each_entry_safe(edev, tmp, &pe->edevs, list)
 
+static inline bool eeh_pe_passed(struct eeh_pe *pe)
+{
+        return pe ? !!atomic_read(&pe->pass_dev_cnt) : false;
+}
+
 /*
  * The struct is used to trace EEH state for the associated
  * PCI device node or PCI device. In future, it might
@@ -165,6 +174,11 @@ enum {
 #define EEH_STATE_DMA_ACTIVE    (1 << 4)        /* Active DMA           */
 #define EEH_STATE_MMIO_ENABLED  (1 << 5)        /* MMIO enabled         */
 #define EEH_STATE_DMA_ENABLED   (1 << 6)        /* DMA enabled          */
+#define EEH_PE_STATE_NORMAL             0       /* Normal state         */
+#define EEH_PE_STATE_RESET              1       /* PE reset asserted    */
+#define EEH_PE_STATE_STOPPED_IO_DMA     2       /* Frozen PE            */
+#define EEH_PE_STATE_STOPPED_DMA        4       /* Stopped DMA, Enabled IO */
+#define EEH_PE_STATE_UNAVAIL            5       /* Unavailable          */
 #define EEH_RESET_DEACTIVATE    0       /* Deactivate the PE reset      */
 #define EEH_RESET_HOT           1       /* Hot reset                    */
 #define EEH_RESET_FUNDAMENTAL   3       /* Fundamental reset            */
@@ -194,36 +208,28 @@ extern int eeh_subsystem_flags;
 extern struct eeh_ops *eeh_ops;
 extern raw_spinlock_t confirm_error_lock;
 
-static inline bool eeh_enabled(void)
+static inline void eeh_add_flag(int flag)
 {
-        if ((eeh_subsystem_flags & EEH_FORCE_DISABLED) ||
-            !(eeh_subsystem_flags & EEH_ENABLED))
-                return false;
-
-        return true;
+        eeh_subsystem_flags |= flag;
 }
 
-static inline void eeh_set_enable(bool mode)
+static inline void eeh_clear_flag(int flag)
 {
-        if (mode)
-                eeh_subsystem_flags |= EEH_ENABLED;
-        else
-                eeh_subsystem_flags &= ~EEH_ENABLED;
+        eeh_subsystem_flags &= ~flag;
 }
 
-static inline void eeh_probe_mode_set(int flag)
+static inline bool eeh_has_flag(int flag)
 {
-        eeh_subsystem_flags |= flag;
+        return !!(eeh_subsystem_flags & flag);
 }
 
-static inline int eeh_probe_mode_devtree(void)
+static inline bool eeh_enabled(void)
 {
-        return (eeh_subsystem_flags & EEH_PROBE_MODE_DEVTREE);
-}
+        if (eeh_has_flag(EEH_FORCE_DISABLED) ||
+            !eeh_has_flag(EEH_ENABLED))
+                return false;
 
-static inline int eeh_probe_mode_dev(void)
-{
-        return (eeh_subsystem_flags & EEH_PROBE_MODE_DEV);
+        return true;
 }
 
 static inline void eeh_serialize_lock(unsigned long *flags)
@@ -243,6 +249,7 @@ static inline void eeh_serialize_unlock(unsigned long flags)
 #define EEH_MAX_ALLOWED_FREEZES 5
 
 typedef void *(*eeh_traverse_func)(void *data, void *flag);
+void eeh_set_pe_aux_size(int size);
 int eeh_phb_pe_create(struct pci_controller *phb);
 struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb);
 struct eeh_pe *eeh_pe_get(struct eeh_dev *edev);
@@ -272,6 +279,13 @@ void eeh_add_device_late(struct pci_dev *);
 void eeh_add_device_tree_late(struct pci_bus *);
 void eeh_add_sysfs_files(struct pci_bus *);
 void eeh_remove_device(struct pci_dev *);
+int eeh_dev_open(struct pci_dev *pdev);
+void eeh_dev_release(struct pci_dev *pdev);
+struct eeh_pe *eeh_iommu_group_to_pe(struct iommu_group *group);
+int eeh_pe_set_option(struct eeh_pe *pe, int option);
+int eeh_pe_get_state(struct eeh_pe *pe);
+int eeh_pe_reset(struct eeh_pe *pe, int option);
+int eeh_pe_configure(struct eeh_pe *pe);
 
 /**
  * EEH_POSSIBLE_ERROR() -- test for possible MMIO failure.
@@ -295,8 +309,6 @@ static inline bool eeh_enabled(void)
         return false;
 }
 
-static inline void eeh_set_enable(bool mode) { }
-
 static inline int eeh_init(void)
 {
         return 0;