#define PCI_UNKNOWN ((pci_power_t __force) 5)
#define PCI_POWER_ERROR ((pci_power_t __force) -1)
+/** The pci_channel state describes connectivity between the CPU and
+ * the pci device. If some PCI bus between here and the pci device
+ * has crashed or locked up, this info is reflected here.
+ */
+typedef unsigned int __bitwise pci_channel_state_t;
+
+enum pci_channel_state {
+ /* I/O channel is in normal state */
+ pci_channel_io_normal = (__force pci_channel_state_t) 1,
+
+ /* I/O to channel is blocked */
+ pci_channel_io_frozen = (__force pci_channel_state_t) 2,
+
+ /* PCI card is dead */
+ pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
+};
+
/*
* The pci_dev structure is used to describe PCI devices.
*/
unsigned int class; /* 3 bytes: (base,sub,prog-if) */
u8 hdr_type; /* PCI header type (`multi' flag masked out) */
u8 rom_base_reg; /* which config register controls the ROM */
+ u8 pin; /* which interrupt pin this device uses */
struct pci_driver *driver; /* which driver has allocated this device */
u64 dma_mask; /* Mask of the bits of bus address this
this is D0-D3, D0 being fully functional,
and D3 being off. */
+ pci_channel_state_t error_state; /* current connectivity state */
struct device dev; /* Generic device interface */
/* device is compatible with these IDs */
unsigned int use_driver_data:1; /* pci_driver->driver_data is used */
};
+/* ---------------------------------------------------------------- */
+/** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
+ * a set fof callbacks in struct pci_error_handlers, then that device driver
+ * will be notified of PCI bus errors, and will be driven to recovery
+ * when an error occurs.
+ */
+
+typedef unsigned int __bitwise pci_ers_result_t;
+
+enum pci_ers_result {
+ /* no result/none/not supported in device driver */
+ PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
+
+ /* Device driver can recover without slot reset */
+ PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
+
+ /* Device driver wants slot to be reset. */
+ PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
+
+ /* Device has completely failed, is unrecoverable */
+ PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
+
+ /* Device driver is fully recovered and operational */
+ PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
+};
+
+/* PCI bus error event callbacks */
+struct pci_error_handlers
+{
+ /* PCI bus error detected on this device */
+ pci_ers_result_t (*error_detected)(struct pci_dev *dev,
+ enum pci_channel_state error);
+
+ /* MMIO has been re-enabled, but not DMA */
+ pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
+
+ /* PCI Express link has been reset */
+ pci_ers_result_t (*link_reset)(struct pci_dev *dev);
+
+ /* PCI slot has been reset */
+ pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
+
+ /* Device driver may resume normal operations */
+ void (*resume)(struct pci_dev *dev);
+};
+
+/* ---------------------------------------------------------------- */
+
struct module;
struct pci_driver {
struct list_head node;
char *name;
- struct module *owner;
const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */
void (*shutdown) (struct pci_dev *dev);
+ struct pci_error_handlers *err_handler;
struct device_driver driver;
struct pci_dynids dynids;
};
struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
int pci_find_capability (struct pci_dev *dev, int cap);
int pci_find_next_capability (struct pci_dev *dev, u8 pos, int cap);
-int pci_find_ext_capability (struct pci_dev *dev, int cap);
struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from);
void *alignf_data);
void pci_enable_bridges(struct pci_bus *bus);
-/* New-style probing supporting hot-pluggable devices */
-int pci_register_driver(struct pci_driver *);
+/* Proper probing supporting hot-pluggable devices */
+int __pci_register_driver(struct pci_driver *, struct module *);
+static inline int pci_register_driver(struct pci_driver *driver)
+{
+ return __pci_register_driver(driver, THIS_MODULE);
+}
+
void pci_unregister_driver(struct pci_driver *);
void pci_remove_behind_bridge(struct pci_dev *);
struct pci_driver *pci_dev_driver(const struct pci_dev *);
void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
void *userdata);
+int pci_cfg_space_size(struct pci_dev *dev);
/* kmem_cache style wrapper around pci_alloc_consistent() */
static inline void pci_disable_device(struct pci_dev *dev) { }
static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
+static inline int __pci_register_driver(struct pci_driver *drv, struct module *owner) { return 0;}
static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
static inline void pci_unregister_driver(struct pci_driver *drv) { }
static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
static inline int pci_find_next_capability (struct pci_dev *dev, u8 post, int cap) { return 0; }
-static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; }
/* Power management related routines */
projects / powerpc.git / blobdiff