Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 840 insertions, 0 deletions

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
new file mode 100644
index 000000000..5484048f4
--- /dev/null
+++ b/drivers/pci/pci.h
@@ -0,0 +1,840 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef DRIVERS_PCI_H
+#define DRIVERS_PCI_H
+
+#include <linux/pci.h>
+
+/* Number of possible devfns: 0.0 to 1f.7 inclusive */
+#define MAX_NR_DEVFNS 256
+
+#define PCI_FIND_CAP_TTL	48
+
+#define PCI_VSEC_ID_INTEL_TBT	0x1234	/* Thunderbolt */
+
+#define PCIE_LINK_RETRAIN_TIMEOUT_MS	1000
+
+/*
+ * PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>
+ * Recommends 1ms to 10ms timeout to check L2 ready.
+ */
+#define PCIE_PME_TO_L2_TIMEOUT_US	10000
+
+extern const unsigned char pcie_link_speed[];
+extern bool pci_early_dump;
+
+bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
+bool pcie_cap_has_lnkctl2(const struct pci_dev *dev);
+bool pcie_cap_has_rtctl(const struct pci_dev *dev);
+
+/* 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);
+void pci_cleanup_rom(struct pci_dev *dev);
+#ifdef CONFIG_DMI
+extern const struct attribute_group pci_dev_smbios_attr_group;
+#endif
+
+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);
+
+bool pci_reset_supported(struct pci_dev *dev);
+void pci_init_reset_methods(struct pci_dev *dev);
+int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
+int pci_bus_error_reset(struct pci_dev *dev);
+
+struct pci_cap_saved_data {
+	u16		cap_nr;
+	bool		cap_extended;
+	unsigned int	size;
+	u32		data[];
+};
+
+struct pci_cap_saved_state {
+	struct hlist_node		next;
+	struct pci_cap_saved_data	cap;
+};
+
+void pci_allocate_cap_save_buffers(struct pci_dev *dev);
+void pci_free_cap_save_buffers(struct pci_dev *dev);
+int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size);
+int pci_add_ext_cap_save_buffer(struct pci_dev *dev,
+				u16 cap, unsigned int size);
+struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap);
+struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
+						   u16 cap);
+
+#define PCI_PM_D2_DELAY         200	/* usec; see PCIe r4.0, sec 5.9.1 */
+#define PCI_PM_D3HOT_WAIT       10	/* msec */
+#define PCI_PM_D3COLD_WAIT      100	/* msec */
+
+void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
+void pci_refresh_power_state(struct pci_dev *dev);
+int 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);
+void pcie_clear_device_status(struct pci_dev *dev);
+void pcie_clear_root_pme_status(struct pci_dev *dev);
+bool pci_check_pme_status(struct pci_dev *dev);
+void pci_pme_wakeup_bus(struct pci_bus *bus);
+int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
+void pci_pme_restore(struct pci_dev *dev);
+bool pci_dev_need_resume(struct pci_dev *dev);
+void pci_dev_adjust_pme(struct pci_dev *dev);
+void pci_dev_complete_resume(struct pci_dev *pci_dev);
+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_ea_init(struct pci_dev *dev);
+void pci_msi_init(struct pci_dev *dev);
+void pci_msix_init(struct pci_dev *dev);
+bool pci_bridge_d3_possible(struct pci_dev *dev);
+void pci_bridge_d3_update(struct pci_dev *dev);
+void pci_bridge_reconfigure_ltr(struct pci_dev *dev);
+int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type);
+
+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_has_subordinate(struct pci_dev *pci_dev)
+{
+	return !!(pci_dev->subordinate);
+}
+
+static inline bool pci_power_manageable(struct pci_dev *pci_dev)
+{
+	/*
+	 * Currently we allow normal PCI devices and PCI bridges transition
+	 * into D3 if their bridge_d3 is set.
+	 */
+	return !pci_has_subordinate(pci_dev) || pci_dev->bridge_d3;
+}
+
+static inline bool pcie_downstream_port(const struct pci_dev *dev)
+{
+	int type = pci_pcie_type(dev);
+
+	return type == PCI_EXP_TYPE_ROOT_PORT ||
+	       type == PCI_EXP_TYPE_DOWNSTREAM ||
+	       type == PCI_EXP_TYPE_PCIE_BRIDGE;
+}
+
+void pci_vpd_init(struct pci_dev *dev);
+void pci_vpd_release(struct pci_dev *dev);
+extern const struct attribute_group pci_dev_vpd_attr_group;
+
+/* PCI Virtual Channel */
+int pci_save_vc_state(struct pci_dev *dev);
+void pci_restore_vc_state(struct pci_dev *dev);
+void pci_allocate_vc_save_buffers(struct pci_dev *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) { }
+static inline void pci_remove_legacy_files(struct pci_bus *bus) { }
+#endif
+
+/* Lock for read/write access to pci device and bus lists */
+extern struct rw_semaphore pci_bus_sem;
+extern struct mutex pci_slot_mutex;
+
+extern raw_spinlock_t pci_lock;
+
+extern unsigned int pci_pm_d3hot_delay;
+
+#ifdef CONFIG_PCI_MSI
+void pci_no_msi(void);
+#else
+static inline void pci_no_msi(void) { }
+#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 const struct device_type pci_dev_type;
+extern const struct attribute_group *pci_bus_groups[];
+
+extern unsigned long pci_hotplug_io_size;
+extern unsigned long pci_hotplug_mmio_size;
+extern unsigned long pci_hotplug_mmio_pref_size;
+extern unsigned long pci_hotplug_bus_size;
+
+/**
+ * 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 I/O port BAR */
+	pci_bar_mem32,		/* A 32-bit memory BAR */
+	pci_bar_mem64,		/* A 64-bit memory BAR */
+};
+
+struct device *pci_get_host_bridge_device(struct pci_dev *dev);
+void pci_put_host_bridge_device(struct device *dev);
+
+int pci_configure_extended_tags(struct pci_dev *dev, void *ign);
+bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
+				int crs_timeout);
+bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
+					int crs_timeout);
+int pci_idt_bus_quirk(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);
+void pci_configure_ari(struct pci_dev *dev);
+void __pci_bus_size_bridges(struct pci_bus *bus,
+			struct list_head *realloc_head);
+void __pci_bus_assign_resources(const struct pci_bus *bus,
+				struct list_head *realloc_head,
+				struct list_head *fail_head);
+bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
+
+void pci_reassigndev_resource_alignment(struct pci_dev *dev);
+void pci_disable_bridge_window(struct pci_dev *dev);
+struct pci_bus *pci_bus_get(struct pci_bus *bus);
+void pci_bus_put(struct pci_bus *bus);
+
+/* PCIe link information from Link Capabilities 2 */
+#define PCIE_LNKCAP2_SLS2SPEED(lnkcap2) \
+	((lnkcap2) & PCI_EXP_LNKCAP2_SLS_64_0GB ? PCIE_SPEED_64_0GT : \
+	 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_32_0GB ? PCIE_SPEED_32_0GT : \
+	 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_16_0GB ? PCIE_SPEED_16_0GT : \
+	 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_8_0GB ? PCIE_SPEED_8_0GT : \
+	 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_5_0GB ? PCIE_SPEED_5_0GT : \
+	 (lnkcap2) & PCI_EXP_LNKCAP2_SLS_2_5GB ? PCIE_SPEED_2_5GT : \
+	 PCI_SPEED_UNKNOWN)
+
+/* PCIe speed to Mb/s reduced by encoding overhead */
+#define PCIE_SPEED2MBS_ENC(speed) \
+	((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \
+	 (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
+	 (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
+	 (speed) == PCIE_SPEED_8_0GT  ?  8000*128/130 : \
+	 (speed) == PCIE_SPEED_5_0GT  ?  5000*8/10 : \
+	 (speed) == PCIE_SPEED_2_5GT  ?  2500*8/10 : \
+	 0)
+
+const char *pci_speed_string(enum pci_bus_speed speed);
+enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
+enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
+u32 pcie_bandwidth_capable(struct pci_dev *dev, enum pci_bus_speed *speed,
+			   enum pcie_link_width *width);
+void __pcie_print_link_status(struct pci_dev *dev, bool verbose);
+void pcie_report_downtraining(struct pci_dev *dev);
+void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
+
+/* 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 */
+	u16		vf_device;	/* VF device ID */
+	u32		pgsz;		/* Page size for BAR alignment */
+	u8		link;		/* Function Dependency Link */
+	u8		max_VF_buses;	/* Max buses consumed by VFs */
+	u16		driver_max_VFs;	/* Max num VFs driver supports */
+	struct pci_dev	*dev;		/* Lowest numbered PF */
+	struct pci_dev	*self;		/* This PF */
+	u32		class;		/* VF device */
+	u8		hdr_type;	/* VF header type */
+	u16		subsystem_vendor; /* VF subsystem vendor */
+	u16		subsystem_device; /* VF subsystem device */
+	resource_size_t	barsz[PCI_SRIOV_NUM_BARS];	/* VF BAR size */
+	bool		drivers_autoprobe; /* Auto probing of VFs by driver */
+};
+
+#ifdef CONFIG_PCI_DOE
+void pci_doe_init(struct pci_dev *pdev);
+void pci_doe_destroy(struct pci_dev *pdev);
+void pci_doe_disconnected(struct pci_dev *pdev);
+#else
+static inline void pci_doe_init(struct pci_dev *pdev) { }
+static inline void pci_doe_destroy(struct pci_dev *pdev) { }
+static inline void pci_doe_disconnected(struct pci_dev *pdev) { }
+#endif
+
+/**
+ * pci_dev_set_io_state - Set the new error state if possible.
+ *
+ * @dev: PCI device to set new error_state
+ * @new: the state we want dev to be in
+ *
+ * If the device is experiencing perm_failure, it has to remain in that state.
+ * Any other transition is allowed.
+ *
+ * Returns true if state has been changed to the requested state.
+ */
+static inline bool pci_dev_set_io_state(struct pci_dev *dev,
+					pci_channel_state_t new)
+{
+	pci_channel_state_t old;
+
+	switch (new) {
+	case pci_channel_io_perm_failure:
+		xchg(&dev->error_state, pci_channel_io_perm_failure);
+		return true;
+	case pci_channel_io_frozen:
+		old = cmpxchg(&dev->error_state, pci_channel_io_normal,
+			      pci_channel_io_frozen);
+		return old != pci_channel_io_perm_failure;
+	case pci_channel_io_normal:
+		old = cmpxchg(&dev->error_state, pci_channel_io_frozen,
+			      pci_channel_io_normal);
+		return old != pci_channel_io_perm_failure;
+	default:
+		return false;
+	}
+}
+
+static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
+{
+	pci_dev_set_io_state(dev, pci_channel_io_perm_failure);
+	pci_doe_disconnected(dev);
+
+	return 0;
+}
+
+static inline bool pci_dev_is_disconnected(const struct pci_dev *dev)
+{
+	return dev->error_state == pci_channel_io_perm_failure;
+}
+
+/* pci_dev priv_flags */
+#define PCI_DEV_ADDED 0
+#define PCI_DPC_RECOVERED 1
+#define PCI_DPC_RECOVERING 2
+
+static inline void pci_dev_assign_added(struct pci_dev *dev, bool added)
+{
+	assign_bit(PCI_DEV_ADDED, &dev->priv_flags, added);
+}
+
+static inline bool pci_dev_is_added(const struct pci_dev *dev)
+{
+	return test_bit(PCI_DEV_ADDED, &dev->priv_flags);
+}
+
+#ifdef CONFIG_PCIEAER
+#include <linux/aer.h>
+
+#define AER_MAX_MULTI_ERR_DEVICES	5	/* Not likely to have more */
+
+struct aer_err_info {
+	struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
+	int error_dev_num;
+
+	unsigned int id:16;
+
+	unsigned int severity:2;	/* 0:NONFATAL | 1:FATAL | 2:COR */
+	unsigned int __pad1:5;
+	unsigned int multi_error_valid:1;
+
+	unsigned int first_error:5;
+	unsigned int __pad2:2;
+	unsigned int tlp_header_valid:1;
+
+	unsigned int status;		/* COR/UNCOR Error Status */
+	unsigned int mask;		/* COR/UNCOR Error Mask */
+	struct aer_header_log_regs tlp;	/* TLP Header */
+};
+
+int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info);
+void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
+#endif	/* CONFIG_PCIEAER */
+
+#ifdef CONFIG_PCIEPORTBUS
+/* Cached RCEC Endpoint Association */
+struct rcec_ea {
+	u8		nextbusn;
+	u8		lastbusn;
+	u32		bitmap;
+};
+#endif
+
+#ifdef CONFIG_PCIE_DPC
+void pci_save_dpc_state(struct pci_dev *dev);
+void pci_restore_dpc_state(struct pci_dev *dev);
+void pci_dpc_init(struct pci_dev *pdev);
+void dpc_process_error(struct pci_dev *pdev);
+pci_ers_result_t dpc_reset_link(struct pci_dev *pdev);
+bool pci_dpc_recovered(struct pci_dev *pdev);
+#else
+static inline void pci_save_dpc_state(struct pci_dev *dev) { }
+static inline void pci_restore_dpc_state(struct pci_dev *dev) { }
+static inline void pci_dpc_init(struct pci_dev *pdev) { }
+static inline bool pci_dpc_recovered(struct pci_dev *pdev) { return false; }
+#endif
+
+#ifdef CONFIG_PCIEPORTBUS
+void pci_rcec_init(struct pci_dev *dev);
+void pci_rcec_exit(struct pci_dev *dev);
+void pcie_link_rcec(struct pci_dev *rcec);
+void pcie_walk_rcec(struct pci_dev *rcec,
+		    int (*cb)(struct pci_dev *, void *),
+		    void *userdata);
+#else
+static inline void pci_rcec_init(struct pci_dev *dev) { }
+static inline void pci_rcec_exit(struct pci_dev *dev) { }
+static inline void pcie_link_rcec(struct pci_dev *rcec) { }
+static inline void pcie_walk_rcec(struct pci_dev *rcec,
+				  int (*cb)(struct pci_dev *, void *),
+				  void *userdata) { }
+#endif
+
+#ifdef CONFIG_PCI_ATS
+/* Address Translation Service */
+void pci_ats_init(struct pci_dev *dev);
+void pci_restore_ats_state(struct pci_dev *dev);
+#else
+static inline void pci_ats_init(struct pci_dev *d) { }
+static inline void pci_restore_ats_state(struct pci_dev *dev) { }
+#endif /* CONFIG_PCI_ATS */
+
+#ifdef CONFIG_PCI_PRI
+void pci_pri_init(struct pci_dev *dev);
+void pci_restore_pri_state(struct pci_dev *pdev);
+#else
+static inline void pci_pri_init(struct pci_dev *dev) { }
+static inline void pci_restore_pri_state(struct pci_dev *pdev) { }
+#endif
+
+#ifdef CONFIG_PCI_PASID
+void pci_pasid_init(struct pci_dev *dev);
+void pci_restore_pasid_state(struct pci_dev *pdev);
+#else
+static inline void pci_pasid_init(struct pci_dev *dev) { }
+static inline void pci_restore_pasid_state(struct pci_dev *pdev) { }
+#endif
+
+#ifdef CONFIG_PCI_IOV
+int pci_iov_init(struct pci_dev *dev);
+void pci_iov_release(struct pci_dev *dev);
+void pci_iov_remove(struct pci_dev *dev);
+void pci_iov_update_resource(struct pci_dev *dev, int resno);
+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);
+extern const struct attribute_group sriov_pf_dev_attr_group;
+extern const struct attribute_group sriov_vf_dev_attr_group;
+#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 void pci_iov_remove(struct pci_dev *dev) { }
+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 */
+
+#ifdef CONFIG_PCIE_PTM
+void pci_ptm_init(struct pci_dev *dev);
+void pci_save_ptm_state(struct pci_dev *dev);
+void pci_restore_ptm_state(struct pci_dev *dev);
+void pci_suspend_ptm(struct pci_dev *dev);
+void pci_resume_ptm(struct pci_dev *dev);
+#else
+static inline void pci_ptm_init(struct pci_dev *dev) { }
+static inline void pci_save_ptm_state(struct pci_dev *dev) { }
+static inline void pci_restore_ptm_state(struct pci_dev *dev) { }
+static inline void pci_suspend_ptm(struct pci_dev *dev) { }
+static inline void pci_resume_ptm(struct pci_dev *dev) { }
+#endif
+
+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_acs_init(struct pci_dev *dev);
+#ifdef CONFIG_PCI_QUIRKS
+int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
+int pci_dev_specific_enable_acs(struct pci_dev *dev);
+int pci_dev_specific_disable_acs_redir(struct pci_dev *dev);
+bool pcie_failed_link_retrain(struct pci_dev *dev);
+#else
+static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
+					       u16 acs_flags)
+{
+	return -ENOTTY;
+}
+static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
+{
+	return -ENOTTY;
+}
+static inline int pci_dev_specific_disable_acs_redir(struct pci_dev *dev)
+{
+	return -ENOTTY;
+}
+static inline bool pcie_failed_link_retrain(struct pci_dev *dev)
+{
+	return false;
+}
+#endif
+
+/* PCI error reporting and recovery */
+pci_ers_result_t pcie_do_recovery(struct pci_dev *dev,
+		pci_channel_state_t state,
+		pci_ers_result_t (*reset_subordinates)(struct pci_dev *pdev));
+
+bool pcie_wait_for_link(struct pci_dev *pdev, bool active);
+int pcie_retrain_link(struct pci_dev *pdev, bool use_lt);
+#ifdef CONFIG_PCIEASPM
+void pcie_aspm_init_link_state(struct pci_dev *pdev);
+void pcie_aspm_exit_link_state(struct pci_dev *pdev);
+void pcie_aspm_pm_state_change(struct pci_dev *pdev);
+void pcie_aspm_powersave_config_link(struct pci_dev *pdev);
+#else
+static inline void pcie_aspm_init_link_state(struct pci_dev *pdev) { }
+static inline void pcie_aspm_exit_link_state(struct pci_dev *pdev) { }
+static inline void pcie_aspm_pm_state_change(struct pci_dev *pdev) { }
+static inline void pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
+#endif
+
+#ifdef CONFIG_PCIE_ECRC
+void pcie_set_ecrc_checking(struct pci_dev *dev);
+void pcie_ecrc_get_policy(char *str);
+#else
+static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
+static inline void pcie_ecrc_get_policy(char *str) { }
+#endif
+
+struct pci_dev_reset_methods {
+	u16 vendor;
+	u16 device;
+	int (*reset)(struct pci_dev *dev, bool probe);
+};
+
+struct pci_reset_fn_method {
+	int (*reset_fn)(struct pci_dev *pdev, bool probe);
+	char *name;
+};
+
+#ifdef CONFIG_PCI_QUIRKS
+int pci_dev_specific_reset(struct pci_dev *dev, bool probe);
+#else
+static inline int pci_dev_specific_reset(struct pci_dev *dev, bool probe)
+{
+	return -ENOTTY;
+}
+#endif
+
+#if defined(CONFIG_PCI_QUIRKS) && defined(CONFIG_ARM64)
+int acpi_get_rc_resources(struct device *dev, const char *hid, u16 segment,
+			  struct resource *res);
+#else
+static inline int acpi_get_rc_resources(struct device *dev, const char *hid,
+					u16 segment, struct resource *res)
+{
+	return -ENODEV;
+}
+#endif
+
+int pci_rebar_get_current_size(struct pci_dev *pdev, int bar);
+int pci_rebar_set_size(struct pci_dev *pdev, int bar, int size);
+static inline u64 pci_rebar_size_to_bytes(int size)
+{
+	return 1ULL << (size + 20);
+}
+
+struct device_node;
+
+#ifdef CONFIG_OF
+int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
+int of_get_pci_domain_nr(struct device_node *node);
+int of_pci_get_max_link_speed(struct device_node *node);
+u32 of_pci_get_slot_power_limit(struct device_node *node,
+				u8 *slot_power_limit_value,
+				u8 *slot_power_limit_scale);
+int pci_set_of_node(struct pci_dev *dev);
+void pci_release_of_node(struct pci_dev *dev);
+void pci_set_bus_of_node(struct pci_bus *bus);
+void pci_release_bus_of_node(struct pci_bus *bus);
+
+int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge);
+
+#else
+static inline int
+of_pci_parse_bus_range(struct device_node *node, struct resource *res)
+{
+	return -EINVAL;
+}
+
+static inline int
+of_get_pci_domain_nr(struct device_node *node)
+{
+	return -1;
+}
+
+static inline int
+of_pci_get_max_link_speed(struct device_node *node)
+{
+	return -EINVAL;
+}
+
+static inline u32
+of_pci_get_slot_power_limit(struct device_node *node,
+			    u8 *slot_power_limit_value,
+			    u8 *slot_power_limit_scale)
+{
+	if (slot_power_limit_value)
+		*slot_power_limit_value = 0;
+	if (slot_power_limit_scale)
+		*slot_power_limit_scale = 0;
+	return 0;
+}
+
+static inline int pci_set_of_node(struct pci_dev *dev) { return 0; }
+static inline void pci_release_of_node(struct pci_dev *dev) { }
+static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
+static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
+
+static inline int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
+{
+	return 0;
+}
+
+#endif /* CONFIG_OF */
+
+struct of_changeset;
+
+#ifdef CONFIG_PCI_DYNAMIC_OF_NODES
+void of_pci_make_dev_node(struct pci_dev *pdev);
+void of_pci_remove_node(struct pci_dev *pdev);
+int of_pci_add_properties(struct pci_dev *pdev, struct of_changeset *ocs,
+			  struct device_node *np);
+#else
+static inline void of_pci_make_dev_node(struct pci_dev *pdev) { }
+static inline void of_pci_remove_node(struct pci_dev *pdev) { }
+#endif
+
+#ifdef CONFIG_PCIEAER
+void pci_no_aer(void);
+void pci_aer_init(struct pci_dev *dev);
+void pci_aer_exit(struct pci_dev *dev);
+extern const struct attribute_group aer_stats_attr_group;
+void pci_aer_clear_fatal_status(struct pci_dev *dev);
+int pci_aer_clear_status(struct pci_dev *dev);
+int pci_aer_raw_clear_status(struct pci_dev *dev);
+void pci_save_aer_state(struct pci_dev *dev);
+void pci_restore_aer_state(struct pci_dev *dev);
+#else
+static inline void pci_no_aer(void) { }
+static inline void pci_aer_init(struct pci_dev *d) { }
+static inline void pci_aer_exit(struct pci_dev *d) { }
+static inline void pci_aer_clear_fatal_status(struct pci_dev *dev) { }
+static inline int pci_aer_clear_status(struct pci_dev *dev) { return -EINVAL; }
+static inline int pci_aer_raw_clear_status(struct pci_dev *dev) { return -EINVAL; }
+static inline void pci_save_aer_state(struct pci_dev *dev) { }
+static inline void pci_restore_aer_state(struct pci_dev *dev) { }
+#endif
+
+#ifdef CONFIG_ACPI
+int pci_acpi_program_hp_params(struct pci_dev *dev);
+extern const struct attribute_group pci_dev_acpi_attr_group;
+void pci_set_acpi_fwnode(struct pci_dev *dev);
+int pci_dev_acpi_reset(struct pci_dev *dev, bool probe);
+bool acpi_pci_power_manageable(struct pci_dev *dev);
+bool acpi_pci_bridge_d3(struct pci_dev *dev);
+int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state);
+pci_power_t acpi_pci_get_power_state(struct pci_dev *dev);
+void acpi_pci_refresh_power_state(struct pci_dev *dev);
+int acpi_pci_wakeup(struct pci_dev *dev, bool enable);
+bool acpi_pci_need_resume(struct pci_dev *dev);
+pci_power_t acpi_pci_choose_state(struct pci_dev *pdev);
+#else
+static inline int pci_dev_acpi_reset(struct pci_dev *dev, bool probe)
+{
+	return -ENOTTY;
+}
+static inline void pci_set_acpi_fwnode(struct pci_dev *dev) { }
+static inline int pci_acpi_program_hp_params(struct pci_dev *dev)
+{
+	return -ENODEV;
+}
+static inline bool acpi_pci_power_manageable(struct pci_dev *dev)
+{
+	return false;
+}
+static inline bool acpi_pci_bridge_d3(struct pci_dev *dev)
+{
+	return false;
+}
+static inline int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+	return -ENODEV;
+}
+static inline pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
+{
+	return PCI_UNKNOWN;
+}
+static inline void acpi_pci_refresh_power_state(struct pci_dev *dev) { }
+static inline int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
+{
+	return -ENODEV;
+}
+static inline bool acpi_pci_need_resume(struct pci_dev *dev)
+{
+	return false;
+}
+static inline pci_power_t acpi_pci_choose_state(struct pci_dev *pdev)
+{
+	return PCI_POWER_ERROR;
+}
+#endif
+
+#ifdef CONFIG_PCIEASPM
+extern const struct attribute_group aspm_ctrl_attr_group;
+#endif
+
+extern const struct attribute_group pci_dev_reset_method_attr_group;
+
+#ifdef CONFIG_X86_INTEL_MID
+bool pci_use_mid_pm(void);
+int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state);
+pci_power_t mid_pci_get_power_state(struct pci_dev *pdev);
+#else
+static inline bool pci_use_mid_pm(void)
+{
+	return false;
+}
+static inline int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
+{
+	return -ENODEV;
+}
+static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
+{
+	return PCI_UNKNOWN;
+}
+#endif
+
+/*
+ * Config Address for PCI Configuration Mechanism #1
+ *
+ * See PCI Local Bus Specification, Revision 3.0,
+ * Section 3.2.2.3.2, Figure 3-2, p. 50.
+ */
+
+#define PCI_CONF1_BUS_SHIFT	16 /* Bus number */
+#define PCI_CONF1_DEV_SHIFT	11 /* Device number */
+#define PCI_CONF1_FUNC_SHIFT	8  /* Function number */
+
+#define PCI_CONF1_BUS_MASK	0xff
+#define PCI_CONF1_DEV_MASK	0x1f
+#define PCI_CONF1_FUNC_MASK	0x7
+#define PCI_CONF1_REG_MASK	0xfc /* Limit aligned offset to a maximum of 256B */
+
+#define PCI_CONF1_ENABLE	BIT(31)
+#define PCI_CONF1_BUS(x)	(((x) & PCI_CONF1_BUS_MASK) << PCI_CONF1_BUS_SHIFT)
+#define PCI_CONF1_DEV(x)	(((x) & PCI_CONF1_DEV_MASK) << PCI_CONF1_DEV_SHIFT)
+#define PCI_CONF1_FUNC(x)	(((x) & PCI_CONF1_FUNC_MASK) << PCI_CONF1_FUNC_SHIFT)
+#define PCI_CONF1_REG(x)	((x) & PCI_CONF1_REG_MASK)
+
+#define PCI_CONF1_ADDRESS(bus, dev, func, reg) \
+	(PCI_CONF1_ENABLE | \
+	 PCI_CONF1_BUS(bus) | \
+	 PCI_CONF1_DEV(dev) | \
+	 PCI_CONF1_FUNC(func) | \
+	 PCI_CONF1_REG(reg))
+
+/*
+ * Extension of PCI Config Address for accessing extended PCIe registers
+ *
+ * No standardized specification, but used on lot of non-ECAM-compliant ARM SoCs
+ * or on AMD Barcelona and new CPUs. Reserved bits [27:24] of PCI Config Address
+ * are used for specifying additional 4 high bits of PCI Express register.
+ */
+
+#define PCI_CONF1_EXT_REG_SHIFT	16
+#define PCI_CONF1_EXT_REG_MASK	0xf00
+#define PCI_CONF1_EXT_REG(x)	(((x) & PCI_CONF1_EXT_REG_MASK) << PCI_CONF1_EXT_REG_SHIFT)
+
+#define PCI_CONF1_EXT_ADDRESS(bus, dev, func, reg) \
+	(PCI_CONF1_ADDRESS(bus, dev, func, reg) | \
+	 PCI_CONF1_EXT_REG(reg))
+
+#endif /* DRIVERS_PCI_H */