mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 02:20:53 +07:00
994a65e25d
When devices are under a p2p bridge, upstream transactions get replaced by the device id of the bridge as it owns the PCIE transaction. Hence its necessary to setup translations on behalf of the bridge as well. Due to this limitation all devices under a p2p share the same domain in a DMAR. We just cache the type of device, if its a native PCIe device or not for later use. [akpm@linux-foundation.org: BUG_ON -> WARN_ON+recover] Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ashok Raj <ashok.raj@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Christoph Lameter <clameter@sgi.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
94 lines
3.4 KiB
C
94 lines
3.4 KiB
C
/* Functions internal to the PCI core code */
|
|
|
|
extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
|
|
extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
|
|
extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
|
|
extern void pci_cleanup_rom(struct pci_dev *dev);
|
|
|
|
/* Firmware callbacks */
|
|
extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
|
|
extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state);
|
|
|
|
extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
|
|
extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
|
|
extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
|
|
extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
|
|
extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
|
|
extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
|
|
|
|
/* PCI /proc functions */
|
|
#ifdef CONFIG_PROC_FS
|
|
extern int pci_proc_attach_device(struct pci_dev *dev);
|
|
extern int pci_proc_detach_device(struct pci_dev *dev);
|
|
extern 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 */
|
|
extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
|
|
|
|
extern void pci_remove_legacy_files(struct pci_bus *bus);
|
|
|
|
/* Lock for read/write access to pci device and bus lists */
|
|
extern struct rw_semaphore pci_bus_sem;
|
|
|
|
extern unsigned int pci_pm_d3_delay;
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
void pci_no_msi(void);
|
|
extern 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
|
|
|
|
#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
|
|
void pci_restore_msi_state(struct pci_dev *dev);
|
|
#else
|
|
static inline void pci_restore_msi_state(struct pci_dev *dev) {}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCIEAER
|
|
void pci_no_aer(void);
|
|
#else
|
|
static inline void pci_no_aer(void) { }
|
|
#endif
|
|
|
|
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 int pcie_mch_quirk;
|
|
extern struct device_attribute pci_dev_attrs[];
|
|
extern struct class_device_attribute class_device_attr_cpuaffinity;
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
|