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Diffstat (limited to 'arch/powerpc/include/asm/eeh.h')
-rw-r--r--arch/powerpc/include/asm/eeh.h66
1 files changed, 48 insertions, 18 deletions
diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index a80e32b4..d3e5e9b 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/string.h>
+#include <linux/time.h>
struct pci_dev;
struct pci_bus;
@@ -52,6 +53,9 @@ struct device_node;
#define EEH_PE_ISOLATED (1 << 0) /* Isolated PE */
#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 */
@@ -59,8 +63,10 @@ struct eeh_pe {
int config_addr; /* Traditional PCI address */
int addr; /* PE configuration address */
struct pci_controller *phb; /* Associated PHB */
+ struct pci_bus *bus; /* Top PCI bus for bus PE */
int check_count; /* Times of ignored error */
int freeze_count; /* Times of froze up */
+ struct timeval tstamp; /* Time on first-time freeze */
int false_positives; /* Times of reported #ff's */
struct eeh_pe *parent; /* Parent PE */
struct list_head child_list; /* Link PE to the child list */
@@ -68,8 +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
@@ -78,7 +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 */
@@ -86,21 +98,23 @@ 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)
{
- return edev->dn;
+ return edev ? edev->dn : NULL;
}
static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev)
{
- return edev->pdev;
+ return edev ? edev->pdev : NULL;
}
/*
@@ -130,8 +144,9 @@ static inline struct pci_dev *eeh_dev_to_pci_dev(struct eeh_dev *edev)
struct eeh_ops {
char *name;
int (*init)(void);
+ int (*post_init)(void);
void* (*of_probe)(struct device_node *dn, void *flag);
- void* (*dev_probe)(struct pci_dev *dev, void *flag);
+ int (*dev_probe)(struct pci_dev *dev, void *flag);
int (*set_option)(struct eeh_pe *pe, int option);
int (*get_pe_addr)(struct eeh_pe *pe);
int (*get_state)(struct eeh_pe *pe, int *state);
@@ -141,11 +156,12 @@ struct eeh_ops {
int (*configure_bridge)(struct eeh_pe *pe);
int (*read_config)(struct device_node *dn, int where, int size, u32 *val);
int (*write_config)(struct device_node *dn, int where, int size, u32 val);
+ int (*next_error)(struct eeh_pe **pe);
};
extern struct eeh_ops *eeh_ops;
extern int eeh_subsystem_enabled;
-extern struct mutex eeh_mutex;
+extern raw_spinlock_t confirm_error_lock;
extern int eeh_probe_mode;
#define EEH_PROBE_MODE_DEV (1<<0) /* From PCI device */
@@ -166,14 +182,14 @@ static inline int eeh_probe_mode_dev(void)
return (eeh_probe_mode == EEH_PROBE_MODE_DEV);
}
-static inline void eeh_lock(void)
+static inline void eeh_serialize_lock(unsigned long *flags)
{
- mutex_lock(&eeh_mutex);
+ raw_spin_lock_irqsave(&confirm_error_lock, *flags);
}
-static inline void eeh_unlock(void)
+static inline void eeh_serialize_unlock(unsigned long flags)
{
- mutex_unlock(&eeh_mutex);
+ raw_spin_unlock_irqrestore(&confirm_error_lock, flags);
}
/*
@@ -184,8 +200,13 @@ static inline void eeh_unlock(void)
typedef void *(*eeh_traverse_func)(void *data, void *flag);
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);
@@ -193,16 +214,19 @@ struct pci_bus *eeh_pe_bus_get(struct eeh_pe *pe);
void *eeh_dev_init(struct device_node *dn, void *data);
void eeh_dev_phb_init_dynamic(struct pci_controller *phb);
+int eeh_init(void);
int __init eeh_ops_register(struct eeh_ops *ops);
int __exit eeh_ops_unregister(const char *name);
unsigned long eeh_check_failure(const volatile void __iomem *token,
unsigned long val);
int eeh_dev_check_failure(struct eeh_dev *edev);
-void __init eeh_addr_cache_build(void);
+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.
@@ -221,6 +245,11 @@ void eeh_remove_bus_device(struct pci_dev *, int);
#else /* !CONFIG_EEH */
+static inline int eeh_init(void)
+{
+ return 0;
+}
+
static inline void *eeh_dev_init(struct device_node *dn, void *data)
{
return NULL;
@@ -237,16 +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_lock(void) { }
-static inline void eeh_unlock(void) { }
+static inline void eeh_remove_device(struct pci_dev *dev) { }
#define EEH_POSSIBLE_ERROR(val, type) (0)
#define EEH_IO_ERROR_VALUE(size) (-1UL)
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