powerpc/eeh: Introdce flag to protect sysfs

[linux-block.git] / arch / powerpc / include / asm / eeh.h

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 09a8743143f37a046e8d57e3d65f58f9a1bd3cb4..d3e5e9bc8f946fa3fd7158a3ecc931561c71c1a3 100644 (file)
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -55,6 +55,8 @@ struct device_node;
 #define EEH_PE_RECOVERING      (1 << 1)        /* Recovering PE        */
 #define EEH_PE_PHB_DEAD                (1 << 2)        /* Dead PHB             */
 
+#define EEH_PE_KEEP            (1 << 8)        /* Keep PE on hotplug   */
+
 struct eeh_pe {
        int type;                       /* PE type: PHB/Bus/Device      */
        int state;                      /* PE EEH dependent mode        */
@@ -72,8 +74,8 @@ struct eeh_pe {
        struct list_head child;         /* Child PEs                    */
 };
 
-#define eeh_pe_for_each_dev(pe, edev) \
-               list_for_each_entry(edev, &pe->edevs, list)
+#define eeh_pe_for_each_dev(pe, edev, tmp) \
+               list_for_each_entry_safe(edev, tmp, &pe->edevs, list)
 
 /*
  * The struct is used to trace EEH state for the associated
@@ -82,7 +84,13 @@ struct eeh_pe {
  * another tree except the currently existing tree of PCI
  * buses and PCI devices
  */
-#define EEH_DEV_IRQ_DISABLED   (1<<0)  /* Interrupt disabled           */
+#define EEH_DEV_BRIDGE         (1 << 0)        /* PCI bridge           */
+#define EEH_DEV_ROOT_PORT      (1 << 1)        /* PCIe root port       */
+#define EEH_DEV_DS_PORT                (1 << 2)        /* Downstream port      */
+#define EEH_DEV_IRQ_DISABLED   (1 << 3)        /* Interrupt disabled   */
+#define EEH_DEV_DISCONNECTED   (1 << 4)        /* Removing from PE     */
+
+#define EEH_DEV_SYSFS          (1 << 8)        /* Sysfs created        */
 
 struct eeh_dev {
        int mode;                       /* EEH mode                     */
@@ -90,11 +98,13 @@ struct eeh_dev {
        int config_addr;                /* Config address               */
        int pe_config_addr;             /* PE config address            */
        u32 config_space[16];           /* Saved PCI config space       */
+       u8 pcie_cap;                    /* Saved PCIe capability        */
        struct eeh_pe *pe;              /* Associated PE                */
        struct list_head list;          /* Form link list in the PE     */
        struct pci_controller *phb;     /* Associated PHB               */
        struct device_node *dn;         /* Associated device node       */
        struct pci_dev *pdev;           /* Associated PCI device        */
+       struct pci_bus *bus;            /* PCI bus for partial hotplug  */
 };
 
 static inline struct device_node *eeh_dev_to_of_node(struct eeh_dev *edev)
@@ -193,8 +203,10 @@ 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);
 int eeh_add_to_parent_pe(struct eeh_dev *edev);
-int eeh_rmv_from_parent_pe(struct eeh_dev *edev, int purge_pe);
+int eeh_rmv_from_parent_pe(struct eeh_dev *edev);
 void eeh_pe_update_time_stamp(struct eeh_pe *pe);
+void *eeh_pe_traverse(struct eeh_pe *root,
+               eeh_traverse_func fn, void *flag);
 void *eeh_pe_dev_traverse(struct eeh_pe *root,
                eeh_traverse_func fn, void *flag);
 void eeh_pe_restore_bars(struct eeh_pe *pe);
@@ -209,10 +221,12 @@ unsigned long eeh_check_failure(const volatile void __iomem *token,
                                unsigned long val);
 int eeh_dev_check_failure(struct eeh_dev *edev);
 void eeh_addr_cache_build(void);
+void eeh_add_device_early(struct device_node *);
 void eeh_add_device_tree_early(struct device_node *);
+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_bus_device(struct pci_dev *, int);
+void eeh_remove_device(struct pci_dev *);
 
 /**
  * EEH_POSSIBLE_ERROR() -- test for possible MMIO failure.
@@ -252,13 +266,17 @@ static inline unsigned long eeh_check_failure(const volatile void __iomem *token
 
 static inline void eeh_addr_cache_build(void) { }
 
+static inline void eeh_add_device_early(struct device_node *dn) { }
+
 static inline void eeh_add_device_tree_early(struct device_node *dn) { }
 
+static inline void eeh_add_device_late(struct pci_dev *dev) { }
+
 static inline void eeh_add_device_tree_late(struct pci_bus *bus) { }
 
 static inline void eeh_add_sysfs_files(struct pci_bus *bus) { }
 
-static inline void eeh_remove_bus_device(struct pci_dev *dev, int purge_pe) { }
+static inline void eeh_remove_device(struct pci_dev *dev) { }
 
 #define EEH_POSSIBLE_ERROR(val, type) (0)
 #define EEH_IO_ERROR_VALUE(size) (-1UL)