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32 results

smc_wr.c

Blame
    • Kees Cook's avatar
      6396bb22
      treewide: kzalloc() -> kcalloc() · 6396bb22
      Kees Cook authored
      
      The kzalloc() function has a 2-factor argument form, kcalloc(). This
      patch replaces cases of:
      
              kzalloc(a * b, gfp)
      
      with:
              kcalloc(a * b, gfp)
      
      as well as handling cases of:
      
              kzalloc(a * b * c, gfp)
      
      with:
      
              kzalloc(array3_size(a, b, c), gfp)
      
      as it's slightly less ugly than:
      
              kzalloc_array(array_size(a, b), c, gfp)
      
      This does, however, attempt to ignore constant size factors like:
      
              kzalloc(4 * 1024, gfp)
      
      though any constants defined via macros get caught up in the conversion.
      
      Any factors with a sizeof() of "unsigned char", "char", and "u8" were
      dropped, since they're redundant.
      
      The Coccinelle script used for this was:
      
      // Fix redundant parens around sizeof().
      @@
      type TYPE;
      expression THING, E;
      @@
      
      (
        kzalloc(
      -	(sizeof(TYPE)) * E
      +	sizeof(TYPE) * E
        , ...)
      |
        kzalloc(
      -	(sizeof(THING)) * E
      +	sizeof(THING) * E
        , ...)
      )
      
      // Drop single-byte sizes and redundant parens.
      @@
      expression COUNT;
      typedef u8;
      typedef __u8;
      @@
      
      (
        kzalloc(
      -	sizeof(u8) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(__u8) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(char) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(unsigned char) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(u8) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(__u8) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(char) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(unsigned char) * COUNT
      +	COUNT
        , ...)
      )
      
      // 2-factor product with sizeof(type/expression) and identifier or constant.
      @@
      type TYPE;
      expression THING;
      identifier COUNT_ID;
      constant COUNT_CONST;
      @@
      
      (
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (COUNT_ID)
      +	COUNT_ID, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * COUNT_ID
      +	COUNT_ID, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (COUNT_CONST)
      +	COUNT_CONST, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * COUNT_CONST
      +	COUNT_CONST, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (COUNT_ID)
      +	COUNT_ID, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * COUNT_ID
      +	COUNT_ID, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (COUNT_CONST)
      +	COUNT_CONST, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * COUNT_CONST
      +	COUNT_CONST, sizeof(THING)
        , ...)
      )
      
      // 2-factor product, only identifiers.
      @@
      identifier SIZE, COUNT;
      @@
      
      - kzalloc
      + kcalloc
        (
      -	SIZE * COUNT
      +	COUNT, SIZE
        , ...)
      
      // 3-factor product with 1 sizeof(type) or sizeof(expression), with
      // redundant parens removed.
      @@
      expression THING;
      identifier STRIDE, COUNT;
      type TYPE;
      @@
      
      (
        kzalloc(
      -	sizeof(TYPE) * (COUNT) * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * (COUNT) * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * COUNT * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * COUNT * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * (COUNT) * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * (COUNT) * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * COUNT * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * COUNT * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      )
      
      // 3-factor product with 2 sizeof(variable), with redundant parens removed.
      @@
      expression THING1, THING2;
      identifier COUNT;
      type TYPE1, TYPE2;
      @@
      
      (
        kzalloc(
      -	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
        , ...)
      |
        kzalloc(
      -	sizeof(THING1) * sizeof(THING2) * COUNT
      +	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(THING1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * COUNT
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
        , ...)
      )
      
      // 3-factor product, only identifiers, with redundant parens removed.
      @@
      identifier STRIDE, SIZE, COUNT;
      @@
      
      (
        kzalloc(
      -	(COUNT) * STRIDE * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * (STRIDE) * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * STRIDE * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * (STRIDE) * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * (STRIDE) * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * STRIDE * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * (STRIDE) * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * STRIDE * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      )
      
      // Any remaining multi-factor products, first at least 3-factor products,
      // when they're not all constants...
      @@
      expression E1, E2, E3;
      constant C1, C2, C3;
      @@
      
      (
        kzalloc(C1 * C2 * C3, ...)
      |
        kzalloc(
      -	(E1) * E2 * E3
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	(E1) * (E2) * E3
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	(E1) * (E2) * (E3)
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	E1 * E2 * E3
      +	array3_size(E1, E2, E3)
        , ...)
      )
      
      // And then all remaining 2 factors products when they're not all constants,
      // keeping sizeof() as the second factor argument.
      @@
      expression THING, E1, E2;
      type TYPE;
      constant C1, C2, C3;
      @@
      
      (
        kzalloc(sizeof(THING) * C2, ...)
      |
        kzalloc(sizeof(TYPE) * C2, ...)
      |
        kzalloc(C1 * C2 * C3, ...)
      |
        kzalloc(C1 * C2, ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (E2)
      +	E2, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * E2
      +	E2, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (E2)
      +	E2, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * E2
      +	E2, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	(E1) * E2
      +	E1, E2
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	(E1) * (E2)
      +	E1, E2
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	E1 * E2
      +	E1, E2
        , ...)
      )
      
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      6396bb22
      History
      treewide: kzalloc() -> kcalloc()
      Kees Cook authored
      
      The kzalloc() function has a 2-factor argument form, kcalloc(). This
      patch replaces cases of:
      
              kzalloc(a * b, gfp)
      
      with:
              kcalloc(a * b, gfp)
      
      as well as handling cases of:
      
              kzalloc(a * b * c, gfp)
      
      with:
      
              kzalloc(array3_size(a, b, c), gfp)
      
      as it's slightly less ugly than:
      
              kzalloc_array(array_size(a, b), c, gfp)
      
      This does, however, attempt to ignore constant size factors like:
      
              kzalloc(4 * 1024, gfp)
      
      though any constants defined via macros get caught up in the conversion.
      
      Any factors with a sizeof() of "unsigned char", "char", and "u8" were
      dropped, since they're redundant.
      
      The Coccinelle script used for this was:
      
      // Fix redundant parens around sizeof().
      @@
      type TYPE;
      expression THING, E;
      @@
      
      (
        kzalloc(
      -	(sizeof(TYPE)) * E
      +	sizeof(TYPE) * E
        , ...)
      |
        kzalloc(
      -	(sizeof(THING)) * E
      +	sizeof(THING) * E
        , ...)
      )
      
      // Drop single-byte sizes and redundant parens.
      @@
      expression COUNT;
      typedef u8;
      typedef __u8;
      @@
      
      (
        kzalloc(
      -	sizeof(u8) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(__u8) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(char) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(unsigned char) * (COUNT)
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(u8) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(__u8) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(char) * COUNT
      +	COUNT
        , ...)
      |
        kzalloc(
      -	sizeof(unsigned char) * COUNT
      +	COUNT
        , ...)
      )
      
      // 2-factor product with sizeof(type/expression) and identifier or constant.
      @@
      type TYPE;
      expression THING;
      identifier COUNT_ID;
      constant COUNT_CONST;
      @@
      
      (
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (COUNT_ID)
      +	COUNT_ID, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * COUNT_ID
      +	COUNT_ID, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (COUNT_CONST)
      +	COUNT_CONST, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * COUNT_CONST
      +	COUNT_CONST, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (COUNT_ID)
      +	COUNT_ID, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * COUNT_ID
      +	COUNT_ID, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (COUNT_CONST)
      +	COUNT_CONST, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * COUNT_CONST
      +	COUNT_CONST, sizeof(THING)
        , ...)
      )
      
      // 2-factor product, only identifiers.
      @@
      identifier SIZE, COUNT;
      @@
      
      - kzalloc
      + kcalloc
        (
      -	SIZE * COUNT
      +	COUNT, SIZE
        , ...)
      
      // 3-factor product with 1 sizeof(type) or sizeof(expression), with
      // redundant parens removed.
      @@
      expression THING;
      identifier STRIDE, COUNT;
      type TYPE;
      @@
      
      (
        kzalloc(
      -	sizeof(TYPE) * (COUNT) * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * (COUNT) * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * COUNT * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE) * COUNT * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(TYPE))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * (COUNT) * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * (COUNT) * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * COUNT * (STRIDE)
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      |
        kzalloc(
      -	sizeof(THING) * COUNT * STRIDE
      +	array3_size(COUNT, STRIDE, sizeof(THING))
        , ...)
      )
      
      // 3-factor product with 2 sizeof(variable), with redundant parens removed.
      @@
      expression THING1, THING2;
      identifier COUNT;
      type TYPE1, TYPE2;
      @@
      
      (
        kzalloc(
      -	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
        , ...)
      |
        kzalloc(
      -	sizeof(THING1) * sizeof(THING2) * COUNT
      +	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(THING1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * COUNT
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
        , ...)
      |
        kzalloc(
      -	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
      +	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
        , ...)
      )
      
      // 3-factor product, only identifiers, with redundant parens removed.
      @@
      identifier STRIDE, SIZE, COUNT;
      @@
      
      (
        kzalloc(
      -	(COUNT) * STRIDE * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * (STRIDE) * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * STRIDE * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * (STRIDE) * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * (STRIDE) * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * STRIDE * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	(COUNT) * (STRIDE) * (SIZE)
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      |
        kzalloc(
      -	COUNT * STRIDE * SIZE
      +	array3_size(COUNT, STRIDE, SIZE)
        , ...)
      )
      
      // Any remaining multi-factor products, first at least 3-factor products,
      // when they're not all constants...
      @@
      expression E1, E2, E3;
      constant C1, C2, C3;
      @@
      
      (
        kzalloc(C1 * C2 * C3, ...)
      |
        kzalloc(
      -	(E1) * E2 * E3
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	(E1) * (E2) * E3
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	(E1) * (E2) * (E3)
      +	array3_size(E1, E2, E3)
        , ...)
      |
        kzalloc(
      -	E1 * E2 * E3
      +	array3_size(E1, E2, E3)
        , ...)
      )
      
      // And then all remaining 2 factors products when they're not all constants,
      // keeping sizeof() as the second factor argument.
      @@
      expression THING, E1, E2;
      type TYPE;
      constant C1, C2, C3;
      @@
      
      (
        kzalloc(sizeof(THING) * C2, ...)
      |
        kzalloc(sizeof(TYPE) * C2, ...)
      |
        kzalloc(C1 * C2 * C3, ...)
      |
        kzalloc(C1 * C2, ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * (E2)
      +	E2, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(TYPE) * E2
      +	E2, sizeof(TYPE)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * (E2)
      +	E2, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	sizeof(THING) * E2
      +	E2, sizeof(THING)
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	(E1) * E2
      +	E1, E2
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	(E1) * (E2)
      +	E1, E2
        , ...)
      |
      - kzalloc
      + kcalloc
        (
      -	E1 * E2
      +	E1, E2
        , ...)
      )
      
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
    pci.h 10.09 KiB
    #ifndef DRIVERS_PCI_H
    #define DRIVERS_PCI_H
    
    #include <linux/workqueue.h>
    
    #define PCI_CFG_SPACE_SIZE	256
    #define PCI_CFG_SPACE_EXP_SIZE	4096
    
    extern const unsigned char pcix_bus_speed[];
    extern const unsigned char pcie_link_speed[];
    
    /* Functions internal to the PCI core code */
    
    int pci_create_sysfs_dev_files(struct pci_dev *pdev);
    void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
    #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
    static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
    { return; }
    static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
    { return; }
    #else
    void pci_create_firmware_label_files(struct pci_dev *pdev);
    void pci_remove_firmware_label_files(struct pci_dev *pdev);
    #endif
    void pci_cleanup_rom(struct pci_dev *dev);
    #ifdef HAVE_PCI_MMAP
    enum pci_mmap_api {
    	PCI_MMAP_SYSFS,	/* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
    	PCI_MMAP_PROCFS	/* mmap on /proc/bus/pci/<BDF> */
    };
    int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
    		  enum pci_mmap_api mmap_api);
    #endif
    int pci_probe_reset_function(struct pci_dev *dev);
    
    /**
     * struct pci_platform_pm_ops - Firmware PM callbacks
     *
     * @is_manageable: returns 'true' if given device is power manageable by the
     *                 platform firmware
     *
     * @set_state: invokes the platform firmware to set the device's power state
     *
     * @choose_state: returns PCI power state of given device preferred by the
     *                platform; to be used during system-wide transitions from a
     *                sleeping state to the working state and vice versa
     *
     * @sleep_wake: enables/disables the system wake up capability of given device
     *
     * @run_wake: enables/disables the platform to generate run-time wake-up events
     *		for given device (the device's wake-up capability has to be
     *		enabled by @sleep_wake for this feature to work)
     *
     * If given platform is generally capable of power managing PCI devices, all of
     * these callbacks are mandatory.
     */
    struct pci_platform_pm_ops {
    	bool (*is_manageable)(struct pci_dev *dev);
    	int (*set_state)(struct pci_dev *dev, pci_power_t state);
    	pci_power_t (*choose_state)(struct pci_dev *dev);
    	int (*sleep_wake)(struct pci_dev *dev, bool enable);
    	int (*run_wake)(struct pci_dev *dev, bool enable);
    };
    
    int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
    void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
    void pci_power_up(struct pci_dev *dev);
    void pci_disable_enabled_device(struct pci_dev *dev);
    int pci_finish_runtime_suspend(struct pci_dev *dev);
    int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
    void pci_wakeup_bus(struct pci_bus *bus);
    void pci_config_pm_runtime_get(struct pci_dev *dev);
    void pci_config_pm_runtime_put(struct pci_dev *dev);
    void pci_pm_init(struct pci_dev *dev);
    void pci_allocate_cap_save_buffers(struct pci_dev *dev);
    void pci_free_cap_save_buffers(struct pci_dev *dev);
    
    static inline void pci_wakeup_event(struct pci_dev *dev)
    {
    	/* Wait 100 ms before the system can be put into a sleep state. */
    	pm_wakeup_event(&dev->dev, 100);
    }
    
    static inline bool pci_is_bridge(struct pci_dev *pci_dev)
    {
    	return !!(pci_dev->subordinate);
    }
    
    struct pci_vpd_ops {
    	ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
    	ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
    	void (*release)(struct pci_dev *dev);
    };
    
    struct pci_vpd {
    	unsigned int len;
    	const struct pci_vpd_ops *ops;
    	struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
    };
    
    int pci_vpd_pci22_init(struct pci_dev *dev);
    static inline void pci_vpd_release(struct pci_dev *dev)
    {
    	if (dev->vpd)
    		dev->vpd->ops->release(dev);
    }
    
    /* PCI /proc functions */
    #ifdef CONFIG_PROC_FS
    int pci_proc_attach_device(struct pci_dev *dev);
    int pci_proc_detach_device(struct pci_dev *dev);
    int pci_proc_detach_bus(struct pci_bus *bus);
    #else
    static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
    static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
    static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
    #endif
    
    /* Functions for PCI Hotplug drivers to use */
    int pci_hp_add_bridge(struct pci_dev *dev);
    
    #ifdef HAVE_PCI_LEGACY
    void pci_create_legacy_files(struct pci_bus *bus);
    void pci_remove_legacy_files(struct pci_bus *bus);
    #else
    static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
    static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
    #endif
    
    /* Lock for read/write access to pci device and bus lists */
    extern struct rw_semaphore pci_bus_sem;
    
    extern raw_spinlock_t pci_lock;
    
    extern unsigned int pci_pm_d3_delay;
    
    #ifdef CONFIG_PCI_MSI
    void pci_no_msi(void);
    void pci_msi_init_pci_dev(struct pci_dev *dev);
    #else
    static inline void pci_no_msi(void) { }
    static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
    #endif
    
    void pci_realloc_get_opt(char *);
    
    static inline int pci_no_d1d2(struct pci_dev *dev)
    {
    	unsigned int parent_dstates = 0;
    
    	if (dev->bus->self)
    		parent_dstates = dev->bus->self->no_d1d2;
    	return (dev->no_d1d2 || parent_dstates);
    
    }
    extern const struct attribute_group *pci_dev_groups[];
    extern const struct attribute_group *pcibus_groups[];
    extern struct device_type pci_dev_type;
    extern const struct attribute_group *pci_bus_groups[];
    
    
    /**
     * pci_match_one_device - Tell if a PCI device structure has a matching
     *                        PCI device id structure
     * @id: single PCI device id structure to match
     * @dev: the PCI device structure to match against
     *
     * Returns the matching pci_device_id structure or %NULL if there is no match.
     */
    static inline const struct pci_device_id *
    pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
    {
    	if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
    	    (id->device == PCI_ANY_ID || id->device == dev->device) &&
    	    (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
    	    (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
    	    !((id->class ^ dev->class) & id->class_mask))
    		return id;
    	return NULL;
    }
    
    /* PCI slot sysfs helper code */
    #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
    
    extern struct kset *pci_slots_kset;
    
    struct pci_slot_attribute {
    	struct attribute attr;
    	ssize_t (*show)(struct pci_slot *, char *);
    	ssize_t (*store)(struct pci_slot *, const char *, size_t);
    };
    #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
    
    enum pci_bar_type {
    	pci_bar_unknown,	/* Standard PCI BAR probe */
    	pci_bar_io,		/* An io port BAR */
    	pci_bar_mem32,		/* A 32-bit memory BAR */
    	pci_bar_mem64,		/* A 64-bit memory BAR */
    };
    
    bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
    				int crs_timeout);
    int pci_setup_device(struct pci_dev *dev);
    int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
    		    struct resource *res, unsigned int reg);
    int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
    void pci_configure_ari(struct pci_dev *dev);
    void __ref __pci_bus_size_bridges(struct pci_bus *bus,
    			struct list_head *realloc_head);
    void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
    				      struct list_head *realloc_head,
    				      struct list_head *fail_head);
    
    /**
     * pci_ari_enabled - query ARI forwarding status
     * @bus: the PCI bus
     *
     * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
     */
    static inline int pci_ari_enabled(struct pci_bus *bus)
    {
    	return bus->self && bus->self->ari_enabled;
    }
    
    void pci_reassigndev_resource_alignment(struct pci_dev *dev);
    void pci_disable_bridge_window(struct pci_dev *dev);
    
    /* Single Root I/O Virtualization */
    struct pci_sriov {
    	int pos;		/* capability position */
    	int nres;		/* number of resources */
    	u32 cap;		/* SR-IOV Capabilities */
    	u16 ctrl;		/* SR-IOV Control */
    	u16 total_VFs;		/* total VFs associated with the PF */
    	u16 initial_VFs;	/* initial VFs associated with the PF */
    	u16 num_VFs;		/* number of VFs available */
    	u16 offset;		/* first VF Routing ID offset */
    	u16 stride;		/* following VF stride */
    	u32 pgsz;		/* page size for BAR alignment */
    	u8 link;		/* Function Dependency Link */
    	u16 driver_max_VFs;	/* max num VFs driver supports */
    	struct pci_dev *dev;	/* lowest numbered PF */
    	struct pci_dev *self;	/* this PF */
    	struct mutex lock;	/* lock for VF bus */
    	struct work_struct mtask; /* VF Migration task */
    	u8 __iomem *mstate;	/* VF Migration State Array */
    };
    
    #ifdef CONFIG_PCI_ATS
    void pci_restore_ats_state(struct pci_dev *dev);
    #else
    static inline void pci_restore_ats_state(struct pci_dev *dev)
    {
    }
    #endif /* CONFIG_PCI_ATS */
    
    #ifdef CONFIG_PCI_IOV
    int pci_iov_init(struct pci_dev *dev);
    void pci_iov_release(struct pci_dev *dev);
    int pci_iov_resource_bar(struct pci_dev *dev, int resno,
    			 enum pci_bar_type *type);
    resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
    void pci_restore_iov_state(struct pci_dev *dev);
    int pci_iov_bus_range(struct pci_bus *bus);
    
    #else
    static inline int pci_iov_init(struct pci_dev *dev)
    {
    	return -ENODEV;
    }
    static inline void pci_iov_release(struct pci_dev *dev)
    
    {
    }
    static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
    				       enum pci_bar_type *type)
    {
    	return 0;
    }
    static inline void pci_restore_iov_state(struct pci_dev *dev)
    {
    }
    static inline int pci_iov_bus_range(struct pci_bus *bus)
    {
    	return 0;
    }
    
    #endif /* CONFIG_PCI_IOV */
    
    unsigned long pci_cardbus_resource_alignment(struct resource *);
    
    static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
    						     struct resource *res)
    {
    #ifdef CONFIG_PCI_IOV
    	int resno = res - dev->resource;
    
    	if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
    		return pci_sriov_resource_alignment(dev, resno);
    #endif
    	if (dev->class >> 8  == PCI_CLASS_BRIDGE_CARDBUS)
    		return pci_cardbus_resource_alignment(res);
    	return resource_alignment(res);
    }
    
    void pci_enable_acs(struct pci_dev *dev);
    
    struct pci_dev_reset_methods {
    	u16 vendor;
    	u16 device;
    	int (*reset)(struct pci_dev *dev, int probe);
    };
    
    #ifdef CONFIG_PCI_QUIRKS
    int pci_dev_specific_reset(struct pci_dev *dev, int probe);
    #else
    static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
    {
    	return -ENOTTY;
    }
    #endif
    
    #endif /* DRIVERS_PCI_H */