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1#ifndef _ASM_X86_PCI_H
2#define _ASM_X86_PCI_H
3
4#include <linux/mm.h> /* for struct page */
5#include <linux/types.h>
6#include <linux/slab.h>
7#include <linux/string.h>
8#include <linux/scatterlist.h>
9#include <asm/io.h>
10#include <asm/x86_init.h>
11
12#ifdef __KERNEL__
13
14struct pci_sysdata {
15 int domain; /* PCI domain */
16 int node; /* NUMA node */
17#ifdef CONFIG_ACPI
18 struct acpi_device *companion; /* ACPI companion device */
19#endif
20#ifdef CONFIG_X86_64
21 void *iommu; /* IOMMU private data */
22#endif
23#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
24 void *fwnode; /* IRQ domain for MSI assignment */
25#endif
26#if IS_ENABLED(CONFIG_VMD)
27 bool vmd_domain; /* True if in Intel VMD domain */
28#endif
29};
30
31extern int pci_routeirq;
32extern int noioapicquirk;
33extern int noioapicreroute;
34
35#ifdef CONFIG_PCI
36
37#ifdef CONFIG_PCI_DOMAINS
38static inline int pci_domain_nr(struct pci_bus *bus)
39{
40 struct pci_sysdata *sd = bus->sysdata;
41
42 return sd->domain;
43}
44
45static inline int pci_proc_domain(struct pci_bus *bus)
46{
47 return pci_domain_nr(bus);
48}
49#endif
50
51#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
52static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
53{
54 struct pci_sysdata *sd = bus->sysdata;
55
56 return sd->fwnode;
57}
58
59#define pci_root_bus_fwnode _pci_root_bus_fwnode
60#endif
61
62static inline bool is_vmd(struct pci_bus *bus)
63{
64#if IS_ENABLED(CONFIG_VMD)
65 struct pci_sysdata *sd = bus->sysdata;
66
67 return sd->vmd_domain;
68#else
69 return false;
70#endif
71}
72
73/* Can be used to override the logic in pci_scan_bus for skipping
74 already-configured bus numbers - to be used for buggy BIOSes
75 or architectures with incomplete PCI setup by the loader */
76
77extern unsigned int pcibios_assign_all_busses(void);
78extern int pci_legacy_init(void);
79# ifdef CONFIG_ACPI
80# define x86_default_pci_init pci_acpi_init
81# else
82# define x86_default_pci_init pci_legacy_init
83# endif
84#else
85# define pcibios_assign_all_busses() 0
86# define x86_default_pci_init NULL
87#endif
88
89extern unsigned long pci_mem_start;
90#define PCIBIOS_MIN_IO 0x1000
91#define PCIBIOS_MIN_MEM (pci_mem_start)
92
93#define PCIBIOS_MIN_CARDBUS_IO 0x4000
94
95extern int pcibios_enabled;
96void pcibios_config_init(void);
97void pcibios_scan_root(int bus);
98
99void pcibios_set_master(struct pci_dev *dev);
100struct irq_routing_table *pcibios_get_irq_routing_table(void);
101int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
102
103
104#define HAVE_PCI_MMAP
105extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
106 enum pci_mmap_state mmap_state,
107 int write_combine);
108
109
110#ifdef CONFIG_PCI
111extern void early_quirks(void);
112#else
113static inline void early_quirks(void) { }
114#endif
115
116extern void pci_iommu_alloc(void);
117
118#ifdef CONFIG_PCI_MSI
119/* implemented in arch/x86/kernel/apic/io_apic. */
120struct msi_desc;
121int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
122void native_teardown_msi_irq(unsigned int irq);
123void native_restore_msi_irqs(struct pci_dev *dev);
124#else
125#define native_setup_msi_irqs NULL
126#define native_teardown_msi_irq NULL
127#endif
128
129#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
130
131#endif /* __KERNEL__ */
132
133#ifdef CONFIG_X86_64
134#include <asm/pci_64.h>
135#endif
136
137/* generic pci stuff */
138#include <asm-generic/pci.h>
139
140#ifdef CONFIG_NUMA
141/* Returns the node based on pci bus */
142static inline int __pcibus_to_node(const struct pci_bus *bus)
143{
144 const struct pci_sysdata *sd = bus->sysdata;
145
146 return sd->node;
147}
148
149static inline const struct cpumask *
150cpumask_of_pcibus(const struct pci_bus *bus)
151{
152 int node;
153
154 node = __pcibus_to_node(bus);
155 return (node == -1) ? cpu_online_mask :
156 cpumask_of_node(node);
157}
158#endif
159
160struct pci_setup_rom {
161 struct setup_data data;
162 uint16_t vendor;
163 uint16_t devid;
164 uint64_t pcilen;
165 unsigned long segment;
166 unsigned long bus;
167 unsigned long device;
168 unsigned long function;
169 uint8_t romdata[0];
170};
171
172#endif /* _ASM_X86_PCI_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_PCI_H
3#define _ASM_X86_PCI_H
4
5#include <linux/mm.h> /* for struct page */
6#include <linux/types.h>
7#include <linux/slab.h>
8#include <linux/string.h>
9#include <linux/scatterlist.h>
10#include <linux/numa.h>
11#include <asm/io.h>
12#include <asm/memtype.h>
13#include <asm/x86_init.h>
14
15struct pci_sysdata {
16 int domain; /* PCI domain */
17 int node; /* NUMA node */
18#ifdef CONFIG_ACPI
19 struct acpi_device *companion; /* ACPI companion device */
20#endif
21#ifdef CONFIG_X86_64
22 void *iommu; /* IOMMU private data */
23#endif
24#ifdef CONFIG_PCI_MSI
25 void *fwnode; /* IRQ domain for MSI assignment */
26#endif
27#if IS_ENABLED(CONFIG_VMD)
28 struct pci_dev *vmd_dev; /* VMD Device if in Intel VMD domain */
29#endif
30};
31
32extern int pci_routeirq;
33extern int noioapicquirk;
34extern int noioapicreroute;
35
36static inline struct pci_sysdata *to_pci_sysdata(const struct pci_bus *bus)
37{
38 return bus->sysdata;
39}
40
41#ifdef CONFIG_PCI
42
43#ifdef CONFIG_PCI_DOMAINS
44static inline int pci_domain_nr(struct pci_bus *bus)
45{
46 return to_pci_sysdata(bus)->domain;
47}
48
49static inline int pci_proc_domain(struct pci_bus *bus)
50{
51 return pci_domain_nr(bus);
52}
53#endif
54
55#ifdef CONFIG_PCI_MSI
56static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
57{
58 return to_pci_sysdata(bus)->fwnode;
59}
60
61#define pci_root_bus_fwnode _pci_root_bus_fwnode
62#endif
63
64#if IS_ENABLED(CONFIG_VMD)
65static inline bool is_vmd(struct pci_bus *bus)
66{
67 return to_pci_sysdata(bus)->vmd_dev != NULL;
68}
69#else
70#define is_vmd(bus) false
71#endif /* CONFIG_VMD */
72
73/* Can be used to override the logic in pci_scan_bus for skipping
74 already-configured bus numbers - to be used for buggy BIOSes
75 or architectures with incomplete PCI setup by the loader */
76
77extern unsigned int pcibios_assign_all_busses(void);
78extern int pci_legacy_init(void);
79#else
80static inline int pcibios_assign_all_busses(void) { return 0; }
81#endif
82
83extern unsigned long pci_mem_start;
84#define PCIBIOS_MIN_IO 0x1000
85#define PCIBIOS_MIN_MEM (pci_mem_start)
86
87#define PCIBIOS_MIN_CARDBUS_IO 0x4000
88
89extern int pcibios_enabled;
90void pcibios_scan_root(int bus);
91
92struct irq_routing_table *pcibios_get_irq_routing_table(void);
93int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
94
95bool pci_dev_has_default_msi_parent_domain(struct pci_dev *dev);
96
97#define HAVE_PCI_MMAP
98#define arch_can_pci_mmap_wc() pat_enabled()
99#define ARCH_GENERIC_PCI_MMAP_RESOURCE
100
101#ifdef CONFIG_PCI
102extern void early_quirks(void);
103#else
104static inline void early_quirks(void) { }
105#endif
106
107extern void pci_iommu_alloc(void);
108
109#ifdef CONFIG_NUMA
110/* Returns the node based on pci bus */
111static inline int __pcibus_to_node(const struct pci_bus *bus)
112{
113 return to_pci_sysdata(bus)->node;
114}
115
116static inline const struct cpumask *
117cpumask_of_pcibus(const struct pci_bus *bus)
118{
119 int node;
120
121 node = __pcibus_to_node(bus);
122 return (node == NUMA_NO_NODE) ? cpu_online_mask :
123 cpumask_of_node(node);
124}
125#endif
126
127struct pci_setup_rom {
128 struct setup_data data;
129 uint16_t vendor;
130 uint16_t devid;
131 uint64_t pcilen;
132 unsigned long segment;
133 unsigned long bus;
134 unsigned long device;
135 unsigned long function;
136 uint8_t romdata[];
137};
138
139#endif /* _ASM_X86_PCI_H */