1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * c 2001 PPC 64 Team, IBM Corp
4 */
5#ifndef _ASM_POWERPC_PPC_PCI_H
6#define _ASM_POWERPC_PPC_PCI_H
7#ifdef __KERNEL__
8
9#ifdef CONFIG_PCI
10
11#include <linux/pci.h>
12#include <asm/pci-bridge.h>
13
14extern unsigned long isa_io_base;
15
16extern struct list_head hose_list;
17
18extern struct pci_dev *isa_bridge_pcidev;	/* may be NULL if no ISA bus */
19
20/** Bus Unit ID macros; get low and hi 32-bits of the 64-bit BUID */
21#define BUID_HI(buid) upper_32_bits(buid)
22#define BUID_LO(buid) lower_32_bits(buid)
23
24/* PCI device_node operations */
25struct device_node;
26struct pci_dn;
27
28void *pci_traverse_device_nodes(struct device_node *start,
29				void *(*fn)(struct device_node *, void *),
30				void *data);
31extern void pci_devs_phb_init_dynamic(struct pci_controller *phb);
32
33#if defined(CONFIG_IOMMU_API) && (defined(CONFIG_PPC_PSERIES) || \
34				  defined(CONFIG_PPC_POWERNV))
35extern void ppc_iommu_register_device(struct pci_controller *phb);
36extern void ppc_iommu_unregister_device(struct pci_controller *phb);
37#else
38static inline void ppc_iommu_register_device(struct pci_controller *phb) { }
39static inline void ppc_iommu_unregister_device(struct pci_controller *phb) { }
40#endif
41
42
43/* From rtas_pci.h */
44extern void init_pci_config_tokens (void);
45extern unsigned long get_phb_buid (struct device_node *);
46extern int rtas_setup_phb(struct pci_controller *phb);
47
48int rtas_pci_dn_read_config(struct pci_dn *pdn, int where, int size, u32 *val);
49int rtas_pci_dn_write_config(struct pci_dn *pdn, int where, int size, u32 val);
50
51#ifdef CONFIG_EEH
52
53void eeh_addr_cache_insert_dev(struct pci_dev *dev);
54void eeh_addr_cache_rmv_dev(struct pci_dev *dev);
55struct eeh_dev *eeh_addr_cache_get_dev(unsigned long addr);
56void eeh_slot_error_detail(struct eeh_pe *pe, int severity);
57int eeh_pci_enable(struct eeh_pe *pe, int function);
58int eeh_pe_reset_full(struct eeh_pe *pe, bool include_passed);
59void eeh_save_bars(struct eeh_dev *edev);
60void eeh_pe_state_mark(struct eeh_pe *pe, int state);
61void eeh_pe_mark_isolated(struct eeh_pe *pe);
62void eeh_pe_state_clear(struct eeh_pe *pe, int state, bool include_passed);
63void eeh_pe_state_mark_with_cfg(struct eeh_pe *pe, int state);
64void eeh_pe_dev_mode_mark(struct eeh_pe *pe, int mode);
65
66void eeh_sysfs_add_device(struct pci_dev *pdev);
67void eeh_sysfs_remove_device(struct pci_dev *pdev);
68
69#endif /* CONFIG_EEH */
70
71#ifdef CONFIG_FSL_ULI1575
72void __init uli_init(void);
73#endif /* CONFIG_FSL_ULI1575 */
74
75#define PCI_BUSNO(bdfn) ((bdfn >> 8) & 0xff)
76
77#else /* CONFIG_PCI */
78static inline void init_pci_config_tokens(void) { }
79#endif /* !CONFIG_PCI */
80
81#if !defined(CONFIG_PCI) || !defined(CONFIG_FSL_ULI1575)
82static inline void __init uli_init(void) {}
83#endif /* !defined(CONFIG_PCI) || !defined(CONFIG_FSL_ULI1575) */
84
85#endif /* __KERNEL__ */
86#endif /* _ASM_POWERPC_PPC_PCI_H */
87