| /* |
| * pci.h |
| * |
| * PCI defines and function prototypes |
| * Copyright 1994, Drew Eckhardt |
| * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
| * |
| * For more information, please consult the following manuals (look at |
| * http://www.pcisig.com/ for how to get them): |
| * |
| * PCI BIOS Specification |
| * PCI Local Bus Specification |
| * PCI to PCI Bridge Specification |
| * PCI System Design Guide |
| */ |
| |
| #ifndef LINUX_PCI_H |
| #define LINUX_PCI_H |
| |
| /* Include the pci register defines */ |
| #include <linux/pci_regs.h> |
| |
| /* |
| * The PCI interface treats multi-function devices as independent |
| * devices. The slot/function address of each device is encoded |
| * in a single byte as follows: |
| * |
| * 7:3 = slot |
| * 2:0 = function |
| */ |
| #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
| #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
| #define PCI_FUNC(devfn) ((devfn) & 0x07) |
| |
| /* Ioctls for /proc/bus/pci/X/Y nodes. */ |
| #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) |
| #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ |
| #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ |
| #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ |
| #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/mod_devicetable.h> |
| |
| #include <linux/types.h> |
| #include <linux/ioport.h> |
| #include <linux/list.h> |
| #include <linux/compiler.h> |
| #include <linux/errno.h> |
| #include <asm/atomic.h> |
| #include <linux/device.h> |
| |
| /* Include the ID list */ |
| #include <linux/pci_ids.h> |
| |
| /* File state for mmap()s on /proc/bus/pci/X/Y */ |
| enum pci_mmap_state { |
| pci_mmap_io, |
| pci_mmap_mem |
| }; |
| |
| /* This defines the direction arg to the DMA mapping routines. */ |
| #define PCI_DMA_BIDIRECTIONAL 0 |
| #define PCI_DMA_TODEVICE 1 |
| #define PCI_DMA_FROMDEVICE 2 |
| #define PCI_DMA_NONE 3 |
| |
| #define DEVICE_COUNT_COMPATIBLE 4 |
| #define DEVICE_COUNT_RESOURCE 12 |
| |
| typedef int __bitwise pci_power_t; |
| |
| #define PCI_D0 ((pci_power_t __force) 0) |
| #define PCI_D1 ((pci_power_t __force) 1) |
| #define PCI_D2 ((pci_power_t __force) 2) |
| #define PCI_D3hot ((pci_power_t __force) 3) |
| #define PCI_D3cold ((pci_power_t __force) 4) |
| #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, |
| }; |
| |
| typedef unsigned int __bitwise pcie_reset_state_t; |
| |
| enum pcie_reset_state { |
| /* Reset is NOT asserted (Use to deassert reset) */ |
| pcie_deassert_reset = (__force pcie_reset_state_t) 1, |
| |
| /* Use #PERST to reset PCI-E device */ |
| pcie_warm_reset = (__force pcie_reset_state_t) 2, |
| |
| /* Use PCI-E Hot Reset to reset device */ |
| pcie_hot_reset = (__force pcie_reset_state_t) 3 |
| }; |
| |
| typedef unsigned short __bitwise pci_dev_flags_t; |
| enum pci_dev_flags { |
| /* INTX_DISABLE in PCI_COMMAND register disables MSI |
| * generation too. |
| */ |
| PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, |
| }; |
| |
| typedef unsigned short __bitwise pci_bus_flags_t; |
| enum pci_bus_flags { |
| PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
| PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, |
| }; |
| |
| struct pci_cap_saved_state { |
| struct hlist_node next; |
| char cap_nr; |
| u32 data[0]; |
| }; |
| |
| /* |
| * The pci_dev structure is used to describe PCI devices. |
| */ |
| struct pci_dev { |
| struct list_head global_list; /* node in list of all PCI devices */ |
| struct list_head bus_list; /* node in per-bus list */ |
| struct pci_bus *bus; /* bus this device is on */ |
| struct pci_bus *subordinate; /* bus this device bridges to */ |
| |
| void *sysdata; /* hook for sys-specific extension */ |
| struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ |
| |
| unsigned int devfn; /* encoded device & function index */ |
| unsigned short vendor; |
| unsigned short device; |
| unsigned short subsystem_vendor; |
| unsigned short subsystem_device; |
| unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
| u8 revision; /* PCI revision, low byte of class word */ |
| u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
| u8 pcie_type; /* PCI-E device/port type */ |
| 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 |
| device implements. Normally this is |
| 0xffffffff. You only need to change |
| this if your device has broken DMA |
| or supports 64-bit transfers. */ |
| |
| pci_power_t current_state; /* Current operating state. In ACPI-speak, |
| 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 short vendor_compatible[DEVICE_COUNT_COMPATIBLE]; |
| unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE]; |
| |
| int cfg_size; /* Size of configuration space */ |
| |
| /* |
| * Instead of touching interrupt line and base address registers |
| * directly, use the values stored here. They might be different! |
| */ |
| unsigned int irq; |
| struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
| |
| /* These fields are used by common fixups */ |
| unsigned int transparent:1; /* Transparent PCI bridge */ |
| unsigned int multifunction:1;/* Part of multi-function device */ |
| /* keep track of device state */ |
| unsigned int is_busmaster:1; /* device is busmaster */ |
| unsigned int no_msi:1; /* device may not use msi */ |
| unsigned int no_d1d2:1; /* only allow d0 or d3 */ |
| unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ |
| unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
| unsigned int msi_enabled:1; |
| unsigned int msix_enabled:1; |
| unsigned int is_managed:1; |
| unsigned int is_pcie:1; |
| pci_dev_flags_t dev_flags; |
| atomic_t enable_cnt; /* pci_enable_device has been called */ |
| |
| u32 saved_config_space[16]; /* config space saved at suspend time */ |
| struct hlist_head saved_cap_space; |
| struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
| int rom_attr_enabled; /* has display of the rom attribute been enabled? */ |
| struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
| #ifdef CONFIG_PCI_MSI |
| struct list_head msi_list; |
| #endif |
| }; |
| |
| extern struct pci_dev *alloc_pci_dev(void); |
| |
| #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) |
| #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) |
| #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
| #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
| |
| static inline int pci_channel_offline(struct pci_dev *pdev) |
| { |
| return (pdev->error_state != pci_channel_io_normal); |
| } |
| |
| static inline struct pci_cap_saved_state *pci_find_saved_cap( |
| struct pci_dev *pci_dev,char cap) |
| { |
| struct pci_cap_saved_state *tmp; |
| struct hlist_node *pos; |
| |
| hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { |
| if (tmp->cap_nr == cap) |
| return tmp; |
| } |
| return NULL; |
| } |
| |
| static inline void pci_add_saved_cap(struct pci_dev *pci_dev, |
| struct pci_cap_saved_state *new_cap) |
| { |
| hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space); |
| } |
| |
| /* |
| * For PCI devices, the region numbers are assigned this way: |
| * |
| * 0-5 standard PCI regions |
| * 6 expansion ROM |
| * 7-10 bridges: address space assigned to buses behind the bridge |
| */ |
| |
| #define PCI_ROM_RESOURCE 6 |
| #define PCI_BRIDGE_RESOURCES 7 |
| #define PCI_NUM_RESOURCES 11 |
| |
| #ifndef PCI_BUS_NUM_RESOURCES |
| #define PCI_BUS_NUM_RESOURCES 8 |
| #endif |
| |
| #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ |
| |
| struct pci_bus { |
| struct list_head node; /* node in list of buses */ |
| struct pci_bus *parent; /* parent bus this bridge is on */ |
| struct list_head children; /* list of child buses */ |
| struct list_head devices; /* list of devices on this bus */ |
| struct pci_dev *self; /* bridge device as seen by parent */ |
| struct resource *resource[PCI_BUS_NUM_RESOURCES]; |
| /* address space routed to this bus */ |
| |
| struct pci_ops *ops; /* configuration access functions */ |
| void *sysdata; /* hook for sys-specific extension */ |
| struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ |
| |
| unsigned char number; /* bus number */ |
| unsigned char primary; /* number of primary bridge */ |
| unsigned char secondary; /* number of secondary bridge */ |
| unsigned char subordinate; /* max number of subordinate buses */ |
| |
| char name[48]; |
| |
| unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ |
| pci_bus_flags_t bus_flags; /* Inherited by child busses */ |
| struct device *bridge; |
| struct class_device class_dev; |
| struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
| struct bin_attribute *legacy_mem; /* legacy mem */ |
| }; |
| |
| #define pci_bus_b(n) list_entry(n, struct pci_bus, node) |
| #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev) |
| |
| /* |
| * Error values that may be returned by PCI functions. |
| */ |
| #define PCIBIOS_SUCCESSFUL 0x00 |
| #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
| #define PCIBIOS_BAD_VENDOR_ID 0x83 |
| #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
| #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
| #define PCIBIOS_SET_FAILED 0x88 |
| #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
| |
| /* Low-level architecture-dependent routines */ |
| |
| struct pci_ops { |
| int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
| int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
| }; |
| |
| struct pci_raw_ops { |
| int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn, |
| int reg, int len, u32 *val); |
| int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn, |
| int reg, int len, u32 val); |
| }; |
| |
| extern struct pci_raw_ops *raw_pci_ops; |
| |
| struct pci_bus_region { |
| unsigned long start; |
| unsigned long end; |
| }; |
| |
| struct pci_dynids { |
| spinlock_t lock; /* protects list, index */ |
| struct list_head list; /* for IDs added at runtime */ |
| 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 of 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; |
| 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 (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
| int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
| int (*resume_early) (struct pci_dev *dev); |
| int (*resume) (struct pci_dev *dev); /* Device woken up */ |
| void (*shutdown) (struct pci_dev *dev); |
| |
| struct pci_error_handlers *err_handler; |
| struct device_driver driver; |
| struct pci_dynids dynids; |
| }; |
| |
| #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver) |
| |
| /** |
| * PCI_DEVICE - macro used to describe a specific pci device |
| * @vend: the 16 bit PCI Vendor ID |
| * @dev: the 16 bit PCI Device ID |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific device. The subvendor and subdevice fields will be set to |
| * PCI_ANY_ID. |
| */ |
| #define PCI_DEVICE(vend,dev) \ |
| .vendor = (vend), .device = (dev), \ |
| .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| |
| /** |
| * PCI_DEVICE_CLASS - macro used to describe a specific pci device class |
| * @dev_class: the class, subclass, prog-if triple for this device |
| * @dev_class_mask: the class mask for this device |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific PCI class. The vendor, device, subvendor, and subdevice |
| * fields will be set to PCI_ANY_ID. |
| */ |
| #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
| .class = (dev_class), .class_mask = (dev_class_mask), \ |
| .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
| .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| |
| /** |
| * PCI_VDEVICE - macro used to describe a specific pci device in short form |
| * @vend: the vendor name |
| * @dev: the 16 bit PCI Device ID |
| * |
| * This macro is used to create a struct pci_device_id that matches a |
| * specific PCI device. The subvendor, and subdevice fields will be set |
| * to PCI_ANY_ID. The macro allows the next field to follow as the device |
| * private data. |
| */ |
| |
| #define PCI_VDEVICE(vendor, device) \ |
| PCI_VENDOR_ID_##vendor, (device), \ |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0 |
| |
| /* these external functions are only available when PCI support is enabled */ |
| #ifdef CONFIG_PCI |
| |
| extern struct bus_type pci_bus_type; |
| |
| /* Do NOT directly access these two variables, unless you are arch specific pci |
| * code, or pci core code. */ |
| extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
| extern struct list_head pci_devices; /* list of all devices */ |
| /* Some device drivers need know if pci is initiated */ |
| extern int no_pci_devices(void); |
| |
| void pcibios_fixup_bus(struct pci_bus *); |
| int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
| char *pcibios_setup (char *str); |
| |
| /* Used only when drivers/pci/setup.c is used */ |
| void pcibios_align_resource(void *, struct resource *, resource_size_t, |
| resource_size_t); |
| void pcibios_update_irq(struct pci_dev *, int irq); |
| |
| /* Generic PCI functions used internally */ |
| |
| extern struct pci_bus *pci_find_bus(int domain, int busnr); |
| void pci_bus_add_devices(struct pci_bus *bus); |
| struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
| static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata) |
| { |
| struct pci_bus *root_bus; |
| root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); |
| if (root_bus) |
| pci_bus_add_devices(root_bus); |
| return root_bus; |
| } |
| struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
| struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); |
| int pci_scan_slot(struct pci_bus *bus, int devfn); |
| struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn); |
| void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
| unsigned int pci_scan_child_bus(struct pci_bus *bus); |
| int __must_check pci_bus_add_device(struct pci_dev *dev); |
| void pci_read_bridge_bases(struct pci_bus *child); |
| struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res); |
| int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
| extern struct pci_dev *pci_dev_get(struct pci_dev *dev); |
| extern void pci_dev_put(struct pci_dev *dev); |
| extern void pci_remove_bus(struct pci_bus *b); |
| extern void pci_remove_bus_device(struct pci_dev *dev); |
| extern void pci_stop_bus_device(struct pci_dev *dev); |
| void pci_setup_cardbus(struct pci_bus *bus); |
| extern void pci_sort_breadthfirst(void); |
| |
| /* Generic PCI functions exported to card drivers */ |
| |
| #ifdef CONFIG_PCI_LEGACY |
| struct pci_dev __deprecated *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from); |
| struct pci_dev __deprecated *pci_find_slot (unsigned int bus, unsigned int devfn); |
| #endif /* CONFIG_PCI_LEGACY */ |
| |
| 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); |
| int pci_find_ht_capability (struct pci_dev *dev, int ht_cap); |
| int pci_find_next_ht_capability (struct pci_dev *dev, int pos, int ht_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); |
| struct pci_dev *pci_get_device_reverse(unsigned int vendor, unsigned int device, |
| struct pci_dev *from); |
| |
| struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, |
| unsigned int ss_vendor, unsigned int ss_device, |
| struct pci_dev *from); |
| struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn); |
| struct pci_dev *pci_get_bus_and_slot (unsigned int bus, unsigned int devfn); |
| struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from); |
| int pci_dev_present(const struct pci_device_id *ids); |
| const struct pci_device_id *pci_find_present(const struct pci_device_id *ids); |
| |
| int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val); |
| int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val); |
| int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val); |
| int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val); |
| int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val); |
| int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val); |
| |
| static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) |
| { |
| return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val); |
| } |
| static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) |
| { |
| return pci_bus_read_config_word (dev->bus, dev->devfn, where, val); |
| } |
| static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val) |
| { |
| return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val); |
| } |
| static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) |
| { |
| return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val); |
| } |
| static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) |
| { |
| return pci_bus_write_config_word (dev->bus, dev->devfn, where, val); |
| } |
| static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val) |
| { |
| return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val); |
| } |
| |
| int __must_check pci_enable_device(struct pci_dev *dev); |
| int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask); |
| int __must_check pci_reenable_device(struct pci_dev *); |
| int __must_check pcim_enable_device(struct pci_dev *pdev); |
| void pcim_pin_device(struct pci_dev *pdev); |
| |
| static inline int pci_is_managed(struct pci_dev *pdev) |
| { |
| return pdev->is_managed; |
| } |
| |
| void pci_disable_device(struct pci_dev *dev); |
| void pci_set_master(struct pci_dev *dev); |
| int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
| #define HAVE_PCI_SET_MWI |
| int __must_check pci_set_mwi(struct pci_dev *dev); |
| int pci_try_set_mwi(struct pci_dev *dev); |
| void pci_clear_mwi(struct pci_dev *dev); |
| void pci_intx(struct pci_dev *dev, int enable); |
| void pci_msi_off(struct pci_dev *dev); |
| int pci_set_dma_mask(struct pci_dev *dev, u64 mask); |
| int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); |
| int pcix_get_max_mmrbc(struct pci_dev *dev); |
| int pcix_get_mmrbc(struct pci_dev *dev); |
| int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); |
| int pcie_get_readrq(struct pci_dev *dev); |
| int pcie_set_readrq(struct pci_dev *dev, int rq); |
| void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); |
| int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
| int __must_check pci_assign_resource_fixed(struct pci_dev *dev, int i); |
| void pci_restore_bars(struct pci_dev *dev); |
| int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
| |
| /* ROM control related routines */ |
| void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
| void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size); |
| void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
| void pci_remove_rom(struct pci_dev *pdev); |
| size_t pci_get_rom_size(void __iomem *rom, size_t size); |
| |
| /* Power management related routines */ |
| int pci_save_state(struct pci_dev *dev); |
| int pci_restore_state(struct pci_dev *dev); |
| int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
| pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
| int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); |
| |
| /* Functions for PCI Hotplug drivers to use */ |
| int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap); |
| |
| /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
| void pci_bus_assign_resources(struct pci_bus *bus); |
| void pci_bus_size_bridges(struct pci_bus *bus); |
| int pci_claim_resource(struct pci_dev *, int); |
| void pci_assign_unassigned_resources(void); |
| void pdev_enable_device(struct pci_dev *); |
| void pdev_sort_resources(struct pci_dev *, struct resource_list *); |
| void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
| int (*)(struct pci_dev *, u8, u8)); |
| #define HAVE_PCI_REQ_REGIONS 2 |
| int __must_check pci_request_regions(struct pci_dev *, const char *); |
| void pci_release_regions(struct pci_dev *); |
| int __must_check pci_request_region(struct pci_dev *, int, const char *); |
| void pci_release_region(struct pci_dev *, int); |
| int pci_request_selected_regions(struct pci_dev *, int, const char *); |
| void pci_release_selected_regions(struct pci_dev *, int); |
| |
| /* drivers/pci/bus.c */ |
| int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
| struct resource *res, resource_size_t size, |
| resource_size_t align, resource_size_t min, |
| unsigned int type_mask, |
| void (*alignf)(void *, struct resource *, |
| resource_size_t, resource_size_t), |
| void *alignf_data); |
| void pci_enable_bridges(struct pci_bus *bus); |
| |
| /* Proper probing supporting hot-pluggable devices */ |
| int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
| const char *mod_name); |
| static inline int __must_check pci_register_driver(struct pci_driver *driver) |
| { |
| return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); |
| } |
| |
| 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 *); |
| const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev); |
| int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass); |
| |
| 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); |
| unsigned char pci_bus_max_busnr(struct pci_bus* bus); |
| |
| /* kmem_cache style wrapper around pci_alloc_consistent() */ |
| |
| #include <linux/dmapool.h> |
| |
| #define pci_pool dma_pool |
| #define pci_pool_create(name, pdev, size, align, allocation) \ |
| dma_pool_create(name, &pdev->dev, size, align, allocation) |
| #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
| #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
| #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
| |
| enum pci_dma_burst_strategy { |
| PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, |
| strategy_parameter is N/A */ |
| PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter |
| byte boundaries */ |
| PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of |
| strategy_parameter byte boundaries */ |
| }; |
| |
| struct msix_entry { |
| u16 vector; /* kernel uses to write allocated vector */ |
| u16 entry; /* driver uses to specify entry, OS writes */ |
| }; |
| |
| |
| #ifndef CONFIG_PCI_MSI |
| static inline int pci_enable_msi(struct pci_dev *dev) {return -1;} |
| static inline void pci_disable_msi(struct pci_dev *dev) {} |
| static inline int pci_enable_msix(struct pci_dev* dev, |
| struct msix_entry *entries, int nvec) {return -1;} |
| static inline void pci_disable_msix(struct pci_dev *dev) {} |
| static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {} |
| #else |
| extern int pci_enable_msi(struct pci_dev *dev); |
| extern void pci_disable_msi(struct pci_dev *dev); |
| extern int pci_enable_msix(struct pci_dev* dev, |
| struct msix_entry *entries, int nvec); |
| extern void pci_disable_msix(struct pci_dev *dev); |
| extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); |
| #endif |
| |
| #ifdef CONFIG_HT_IRQ |
| /* The functions a driver should call */ |
| int ht_create_irq(struct pci_dev *dev, int idx); |
| void ht_destroy_irq(unsigned int irq); |
| #endif /* CONFIG_HT_IRQ */ |
| |
| extern void pci_block_user_cfg_access(struct pci_dev *dev); |
| extern void pci_unblock_user_cfg_access(struct pci_dev *dev); |
| |
| /* |
| * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
| * a PCI domain is defined to be a set of PCI busses which share |
| * configuration space. |
| */ |
| #ifdef CONFIG_PCI_DOMAINS |
| extern int pci_domains_supported; |
| #else |
| enum { pci_domains_supported = 0 }; |
| static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| static inline int pci_proc_domain(struct pci_bus *bus) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_PCI_DOMAINS */ |
| |
| #else /* CONFIG_PCI is not enabled */ |
| |
| /* |
| * If the system does not have PCI, clearly these return errors. Define |
| * these as simple inline functions to avoid hair in drivers. |
| */ |
| |
| #define _PCI_NOP(o,s,t) \ |
| static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \ |
| { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
| #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \ |
| _PCI_NOP(o,word,u16 x) \ |
| _PCI_NOP(o,dword,u32 x) |
| _PCI_NOP_ALL(read, *) |
| _PCI_NOP_ALL(write,) |
| |
| static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_device(unsigned int vendor, |
| unsigned int device, struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_device_reverse(unsigned int vendor, |
| unsigned int device, struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, |
| unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from) |
| { return NULL; } |
| |
| #define pci_dev_present(ids) (0) |
| #define no_pci_devices() (1) |
| #define pci_find_present(ids) (NULL) |
| #define pci_dev_put(dev) do { } while (0) |
| |
| static inline void pci_set_master(struct pci_dev *dev) { } |
| static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } |
| 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; } |
| |
| /* Power management related routines */ |
| static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
| static inline int pci_restore_state(struct pci_dev *dev) { return 0; } |
| static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; } |
| static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; } |
| static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; } |
| |
| static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) { return -EIO; } |
| static inline void pci_release_regions(struct pci_dev *dev) { } |
| |
| #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
| |
| static inline void pci_block_user_cfg_access(struct pci_dev *dev) { } |
| static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { } |
| |
| static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
| unsigned int devfn) |
| { return NULL; } |
| |
| static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
| unsigned int devfn) |
| { return NULL; } |
| |
| #endif /* CONFIG_PCI */ |
| |
| /* Include architecture-dependent settings and functions */ |
| |
| #include <asm/pci.h> |
| |
| /* these helpers provide future and backwards compatibility |
| * for accessing popular PCI BAR info */ |
| #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start) |
| #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end) |
| #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags) |
| #define pci_resource_len(dev,bar) \ |
| ((pci_resource_start((dev),(bar)) == 0 && \ |
| pci_resource_end((dev),(bar)) == \ |
| pci_resource_start((dev),(bar))) ? 0 : \ |
| \ |
| (pci_resource_end((dev),(bar)) - \ |
| pci_resource_start((dev),(bar)) + 1)) |
| |
| /* Similar to the helpers above, these manipulate per-pci_dev |
| * driver-specific data. They are really just a wrapper around |
| * the generic device structure functions of these calls. |
| */ |
| static inline void *pci_get_drvdata (struct pci_dev *pdev) |
| { |
| return dev_get_drvdata(&pdev->dev); |
| } |
| |
| static inline void pci_set_drvdata (struct pci_dev *pdev, void *data) |
| { |
| dev_set_drvdata(&pdev->dev, data); |
| } |
| |
| /* If you want to know what to call your pci_dev, ask this function. |
| * Again, it's a wrapper around the generic device. |
| */ |
| static inline char *pci_name(struct pci_dev *pdev) |
| { |
| return pdev->dev.bus_id; |
| } |
| |
| |
| /* Some archs don't want to expose struct resource to userland as-is |
| * in sysfs and /proc |
| */ |
| #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER |
| static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, |
| const struct resource *rsrc, resource_size_t *start, |
| resource_size_t *end) |
| { |
| *start = rsrc->start; |
| *end = rsrc->end; |
| } |
| #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
| |
| |
| /* |
| * The world is not perfect and supplies us with broken PCI devices. |
| * For at least a part of these bugs we need a work-around, so both |
| * generic (drivers/pci/quirks.c) and per-architecture code can define |
| * fixup hooks to be called for particular buggy devices. |
| */ |
| |
| struct pci_fixup { |
| u16 vendor, device; /* You can use PCI_ANY_ID here of course */ |
| void (*hook)(struct pci_dev *dev); |
| }; |
| |
| enum pci_fixup_pass { |
| pci_fixup_early, /* Before probing BARs */ |
| pci_fixup_header, /* After reading configuration header */ |
| pci_fixup_final, /* Final phase of device fixups */ |
| pci_fixup_enable, /* pci_enable_device() time */ |
| pci_fixup_resume, /* pci_enable_device() time */ |
| }; |
| |
| /* Anonymous variables would be nice... */ |
| #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ |
| static const struct pci_fixup __pci_fixup_##name __used \ |
| __attribute__((__section__(#section))) = { vendor, device, hook }; |
| #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
| vendor##device##hook, vendor, device, hook) |
| #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
| vendor##device##hook, vendor, device, hook) |
| #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
| vendor##device##hook, vendor, device, hook) |
| #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
| vendor##device##hook, vendor, device, hook) |
| #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
| DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ |
| resume##vendor##device##hook, vendor, device, hook) |
| |
| |
| void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
| |
| void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
| void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
| void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); |
| int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); |
| void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask); |
| |
| extern int pci_pci_problems; |
| #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
| #define PCIPCI_TRITON 2 |
| #define PCIPCI_NATOMA 4 |
| #define PCIPCI_VIAETBF 8 |
| #define PCIPCI_VSFX 16 |
| #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
| #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ |
| |
| extern unsigned long pci_cardbus_io_size; |
| extern unsigned long pci_cardbus_mem_size; |
| |
| extern int pcibios_add_platform_entries(struct pci_dev *dev); |
| |
| #endif /* __KERNEL__ */ |
| #endif /* LINUX_PCI_H */ |