2008-10-13 19:18:07 +08:00
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#ifndef DRIVERS_PCI_H
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#define DRIVERS_PCI_H
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#define PCI_CFG_SPACE_SIZE 256
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#define PCI_CFG_SPACE_EXP_SIZE 4096
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2005-04-17 06:20:36 +08:00
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/* Functions internal to the PCI core code */
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2007-08-14 21:15:12 +08:00
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extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
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2005-04-17 06:20:36 +08:00
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extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
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extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
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extern void pci_cleanup_rom(struct pci_dev *dev);
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2008-10-25 01:32:33 +08:00
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#ifdef HAVE_PCI_MMAP
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extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
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struct vm_area_struct *vma);
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#endif
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2007-07-17 12:27:10 +08:00
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2008-07-07 09:32:02 +08:00
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/**
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2009-01-10 09:04:26 +08:00
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* struct pci_platform_pm_ops - Firmware PM callbacks
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2008-07-07 09:32:02 +08:00
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*
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2009-01-10 09:04:26 +08:00
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* @is_manageable: returns 'true' if given device is power manageable by the
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* platform firmware
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2008-07-07 09:32:02 +08:00
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*
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2009-01-10 09:04:26 +08:00
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* @set_state: invokes the platform firmware to set the device's power state
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2008-07-07 09:32:02 +08:00
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*
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2009-01-10 09:04:26 +08:00
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* @choose_state: returns PCI power state of given device preferred by the
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* platform; to be used during system-wide transitions from a
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* sleeping state to the working state and vice versa
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2008-07-07 09:32:02 +08:00
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*
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2009-01-10 09:04:26 +08:00
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* @can_wakeup: returns 'true' if given device is capable of waking up the
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* system from a sleeping state
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2008-07-07 09:34:48 +08:00
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*
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2009-01-10 09:04:26 +08:00
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* @sleep_wake: enables/disables the system wake up capability of given device
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2008-07-07 09:34:48 +08:00
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*
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2008-07-07 09:32:02 +08:00
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* If given platform is generally capable of power managing PCI devices, all of
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* these callbacks are mandatory.
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*/
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struct pci_platform_pm_ops {
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bool (*is_manageable)(struct pci_dev *dev);
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int (*set_state)(struct pci_dev *dev, pci_power_t state);
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pci_power_t (*choose_state)(struct pci_dev *dev);
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2008-07-07 09:34:48 +08:00
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bool (*can_wakeup)(struct pci_dev *dev);
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int (*sleep_wake)(struct pci_dev *dev, bool enable);
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2008-07-07 09:32:02 +08:00
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};
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extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
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PCI PM: Avoid touching devices behind bridges in unknown state
It generally is better to avoid accessing devices behind bridges that
may not be in the D0 power state, because in that case the bridges'
secondary buses may not be accessible. For this reason, during the
early phase of resume (ie. with interrupts disabled), before
restoring the standard config registers of a device, check the power
state of the bridge the device is behind and postpone the restoration
of the device's config space, as well as any other operations that
would involve accessing the device, if that state is not D0.
In such cases the restoration of the device's config space will be
retried during the "normal" phase of resume (ie. with interrupts
enabled), so that the bridge can be put into D0 before that happens.
Also, save standard configuration registers of PCI devices during the
"normal" phase of suspend (ie. with interrupts enabled), so that the
bridges the devices are behind can be put into low power states (we
don't put bridges into low power states at the moment, but we may
want to do it in the future and it seems reasonable to design for
that).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07 20:07:15 +08:00
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extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
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2009-01-07 20:03:42 +08:00
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extern void pci_disable_enabled_device(struct pci_dev *dev);
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2008-07-07 09:34:48 +08:00
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extern void pci_pm_init(struct pci_dev *dev);
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2008-12-18 04:10:05 +08:00
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extern void platform_pci_wakeup_init(struct pci_dev *dev);
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2008-12-08 05:02:58 +08:00
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extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
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2009-01-17 04:54:43 +08:00
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extern int pci_restore_standard_config(struct pci_dev *dev);
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static inline bool pci_is_bridge(struct pci_dev *pci_dev)
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{
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return !!(pci_dev->subordinate);
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}
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2005-03-19 13:15:48 +08:00
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2005-09-27 16:21:55 +08:00
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extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
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extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
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extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
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extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
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extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
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extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
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2008-03-06 00:52:39 +08:00
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struct pci_vpd_ops {
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2008-12-19 01:17:16 +08:00
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ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
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ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
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2008-03-06 00:52:39 +08:00
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void (*release)(struct pci_dev *dev);
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};
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struct pci_vpd {
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2008-07-03 01:59:04 +08:00
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unsigned int len;
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2008-12-19 01:17:16 +08:00
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const struct pci_vpd_ops *ops;
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2008-03-06 00:52:39 +08:00
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struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
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};
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extern int pci_vpd_pci22_init(struct pci_dev *dev);
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static inline void pci_vpd_release(struct pci_dev *dev)
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{
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if (dev->vpd)
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dev->vpd->ops->release(dev);
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}
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2005-04-17 06:20:36 +08:00
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/* PCI /proc functions */
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#ifdef CONFIG_PROC_FS
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extern int pci_proc_attach_device(struct pci_dev *dev);
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extern int pci_proc_detach_device(struct pci_dev *dev);
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extern int pci_proc_detach_bus(struct pci_bus *bus);
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#else
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static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
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static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
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static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
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#endif
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/* Functions for PCI Hotplug drivers to use */
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extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
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2008-10-03 17:49:32 +08:00
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#ifdef HAVE_PCI_LEGACY
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extern void pci_create_legacy_files(struct pci_bus *bus);
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2005-04-17 06:20:36 +08:00
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extern void pci_remove_legacy_files(struct pci_bus *bus);
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2008-10-03 17:49:32 +08:00
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#else
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static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
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static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
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#endif
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2005-04-17 06:20:36 +08:00
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/* Lock for read/write access to pci device and bus lists */
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2006-06-02 12:35:43 +08:00
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extern struct rw_semaphore pci_bus_sem;
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2005-04-17 06:20:36 +08:00
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2006-07-12 23:59:00 +08:00
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extern unsigned int pci_pm_d3_delay;
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2007-01-25 16:34:07 +08:00
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2005-08-17 06:16:05 +08:00
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#ifdef CONFIG_PCI_MSI
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2006-03-06 13:33:34 +08:00
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void pci_no_msi(void);
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2007-04-05 15:19:10 +08:00
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extern void pci_msi_init_pci_dev(struct pci_dev *dev);
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2005-08-17 06:16:05 +08:00
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#else
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2006-03-06 13:33:34 +08:00
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static inline void pci_no_msi(void) { }
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2007-04-05 15:19:10 +08:00
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static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
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2005-08-17 06:16:05 +08:00
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#endif
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2007-01-25 16:34:08 +08:00
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2007-10-06 04:17:58 +08:00
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#ifdef CONFIG_PCIEAER
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void pci_no_aer(void);
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#else
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static inline void pci_no_aer(void) { }
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#endif
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2006-07-12 23:59:00 +08:00
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static inline int pci_no_d1d2(struct pci_dev *dev)
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{
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unsigned int parent_dstates = 0;
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2005-08-17 06:16:05 +08:00
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2006-07-12 23:59:00 +08:00
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if (dev->bus->self)
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parent_dstates = dev->bus->self->no_d1d2;
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return (dev->no_d1d2 || parent_dstates);
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}
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2005-04-17 06:20:36 +08:00
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extern int pcie_mch_quirk;
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extern struct device_attribute pci_dev_attrs[];
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2007-05-23 10:47:54 +08:00
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extern struct device_attribute dev_attr_cpuaffinity;
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2008-09-06 20:46:42 +08:00
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extern struct device_attribute dev_attr_cpulistaffinity;
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2005-04-17 06:20:36 +08:00
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/**
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* pci_match_one_device - Tell if a PCI device structure has a matching
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* PCI device id structure
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* @id: single PCI device id structure to match
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* @dev: the PCI device structure to match against
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2008-01-31 07:21:33 +08:00
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*
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2005-04-17 06:20:36 +08:00
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* Returns the matching pci_device_id structure or %NULL if there is no match.
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*/
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static inline const struct pci_device_id *
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pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
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{
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if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
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(id->device == PCI_ANY_ID || id->device == dev->device) &&
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(id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
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(id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
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!((id->class ^ dev->class) & id->class_mask))
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return id;
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return NULL;
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}
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2007-10-22 07:41:46 +08:00
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struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
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2008-06-11 05:28:50 +08:00
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/* PCI slot sysfs helper code */
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#define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
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extern struct kset *pci_slots_kset;
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struct pci_slot_attribute {
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struct attribute attr;
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ssize_t (*show)(struct pci_slot *, char *);
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ssize_t (*store)(struct pci_slot *, const char *, size_t);
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};
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#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
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2008-11-22 02:40:40 +08:00
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enum pci_bar_type {
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pci_bar_unknown, /* Standard PCI BAR probe */
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pci_bar_io, /* An io port BAR */
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pci_bar_mem32, /* A 32-bit memory BAR */
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pci_bar_mem64, /* A 64-bit memory BAR */
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};
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2009-03-20 11:25:14 +08:00
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extern int pci_setup_device(struct pci_dev *dev);
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2008-11-22 02:40:40 +08:00
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extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
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struct resource *res, unsigned int reg);
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2008-11-22 02:41:27 +08:00
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extern int pci_resource_bar(struct pci_dev *dev, int resno,
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enum pci_bar_type *type);
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2008-11-22 02:42:35 +08:00
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extern int pci_bus_add_child(struct pci_bus *bus);
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2008-10-14 14:02:53 +08:00
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extern void pci_enable_ari(struct pci_dev *dev);
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/**
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* pci_ari_enabled - query ARI forwarding status
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2008-11-22 02:38:21 +08:00
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* @bus: the PCI bus
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2008-10-14 14:02:53 +08:00
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*
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* Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
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*/
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2008-11-22 02:38:21 +08:00
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static inline int pci_ari_enabled(struct pci_bus *bus)
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2008-10-14 14:02:53 +08:00
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{
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2008-11-22 02:38:21 +08:00
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return bus->self && bus->self->ari_enabled;
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2008-10-14 14:02:53 +08:00
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}
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2009-03-16 16:13:39 +08:00
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#ifdef CONFIG_PCI_QUIRKS
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extern int pci_is_reassigndev(struct pci_dev *dev);
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resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
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extern void pci_disable_bridge_window(struct pci_dev *dev);
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#endif
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2009-03-20 11:25:11 +08:00
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/* Single Root I/O Virtualization */
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struct pci_sriov {
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int pos; /* capability position */
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int nres; /* number of resources */
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u32 cap; /* SR-IOV Capabilities */
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u16 ctrl; /* SR-IOV Control */
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u16 total; /* total VFs associated with the PF */
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2009-03-20 11:25:15 +08:00
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u16 initial; /* initial VFs associated with the PF */
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u16 nr_virtfn; /* number of VFs available */
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2009-03-20 11:25:11 +08:00
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u16 offset; /* first VF Routing ID offset */
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u16 stride; /* following VF stride */
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u32 pgsz; /* page size for BAR alignment */
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u8 link; /* Function Dependency Link */
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struct pci_dev *dev; /* lowest numbered PF */
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struct pci_dev *self; /* this PF */
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struct mutex lock; /* lock for VF bus */
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};
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#ifdef CONFIG_PCI_IOV
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extern int pci_iov_init(struct pci_dev *dev);
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extern void pci_iov_release(struct pci_dev *dev);
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extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
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enum pci_bar_type *type);
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2009-03-20 11:25:12 +08:00
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extern void pci_restore_iov_state(struct pci_dev *dev);
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2009-03-20 11:25:13 +08:00
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extern int pci_iov_bus_range(struct pci_bus *bus);
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2009-03-20 11:25:11 +08:00
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#else
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static inline int pci_iov_init(struct pci_dev *dev)
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{
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return -ENODEV;
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}
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static inline void pci_iov_release(struct pci_dev *dev)
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{
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}
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static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
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enum pci_bar_type *type)
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{
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return 0;
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}
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2009-03-20 11:25:12 +08:00
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static inline void pci_restore_iov_state(struct pci_dev *dev)
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|
{
|
|
|
|
|
}
|
2009-03-20 11:25:13 +08:00
|
|
|
static inline int pci_iov_bus_range(struct pci_bus *bus)
|
|
|
|
|
{
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
2009-03-20 11:25:11 +08:00
|
|
|
#endif /* CONFIG_PCI_IOV */
|
|
|
|
|
|
2008-10-13 19:18:07 +08:00
|
|
|
#endif /* DRIVERS_PCI_H */
|
