tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 <asm/scatterlist.h>
9#include <asm/io.h>
10
11#ifdef __KERNEL__
12
13struct pci_sysdata {
14 int domain; /* PCI domain */
15 int node; /* NUMA node */
16#ifdef CONFIG_X86_64
17 void *iommu; /* IOMMU private data */
18#endif
19};
20
21extern int pci_routeirq;
22extern int noioapicquirk;
23extern int noioapicreroute;
24
25/* scan a bus after allocating a pci_sysdata for it */
26extern struct pci_bus *pci_scan_bus_on_node(int busno, struct pci_ops *ops,
27 int node);
28extern struct pci_bus *pci_scan_bus_with_sysdata(int busno);
29
30static inline int pci_domain_nr(struct pci_bus *bus)
31{
32 struct pci_sysdata *sd = bus->sysdata;
33 return sd->domain;
34}
35
36static inline int pci_proc_domain(struct pci_bus *bus)
37{
38 return pci_domain_nr(bus);
39}
40
41
42/* Can be used to override the logic in pci_scan_bus for skipping
43 already-configured bus numbers - to be used for buggy BIOSes
44 or architectures with incomplete PCI setup by the loader */
45
46#ifdef CONFIG_PCI
47extern unsigned int pcibios_assign_all_busses(void);
48#else
49#define pcibios_assign_all_busses() 0
50#endif
51#define pcibios_scan_all_fns(a, b) 0
52
53extern unsigned long pci_mem_start;
54#define PCIBIOS_MIN_IO 0x1000
55#define PCIBIOS_MIN_MEM (pci_mem_start)
56
57#define PCIBIOS_MIN_CARDBUS_IO 0x4000
58
59void pcibios_config_init(void);
60struct pci_bus *pcibios_scan_root(int bus);
61
62void pcibios_set_master(struct pci_dev *dev);
63void pcibios_penalize_isa_irq(int irq, int active);
64struct irq_routing_table *pcibios_get_irq_routing_table(void);
65int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
66
67
68#define HAVE_PCI_MMAP
69extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
70 enum pci_mmap_state mmap_state,
71 int write_combine);
72
73
74#ifdef CONFIG_PCI
75extern void early_quirks(void);
76static inline void pci_dma_burst_advice(struct pci_dev *pdev,
77 enum pci_dma_burst_strategy *strat,
78 unsigned long *strategy_parameter)
79{
80 *strat = PCI_DMA_BURST_INFINITY;
81 *strategy_parameter = ~0UL;
82}
83#else
84static inline void early_quirks(void) { }
85#endif
86
87extern void pci_iommu_alloc(void);
88
89/* MSI arch hook */
90#define arch_setup_msi_irqs arch_setup_msi_irqs
91
92#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
93
94#if defined(CONFIG_X86_64) || defined(CONFIG_DMAR) || defined(CONFIG_DMA_API_DEBUG)
95
96#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
97 dma_addr_t ADDR_NAME;
98#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
99 __u32 LEN_NAME;
100#define pci_unmap_addr(PTR, ADDR_NAME) \
101 ((PTR)->ADDR_NAME)
102#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
103 (((PTR)->ADDR_NAME) = (VAL))
104#define pci_unmap_len(PTR, LEN_NAME) \
105 ((PTR)->LEN_NAME)
106#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
107 (((PTR)->LEN_NAME) = (VAL))
108
109#else
110
111#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME[0];
112#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) unsigned LEN_NAME[0];
113#define pci_unmap_addr(PTR, ADDR_NAME) sizeof((PTR)->ADDR_NAME)
114#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
115 do { break; } while (pci_unmap_addr(PTR, ADDR_NAME))
116#define pci_unmap_len(PTR, LEN_NAME) sizeof((PTR)->LEN_NAME)
117#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
118 do { break; } while (pci_unmap_len(PTR, LEN_NAME))
119
120#endif
121
122#endif /* __KERNEL__ */
123
124#ifdef CONFIG_X86_64
125#include "pci_64.h"
126#endif
127
128/* implement the pci_ DMA API in terms of the generic device dma_ one */
129#include <asm-generic/pci-dma-compat.h>
130
131/* generic pci stuff */
132#include <asm-generic/pci.h>
133#define PCIBIOS_MAX_MEM_32 0xffffffff
134
135#ifdef CONFIG_NUMA
136/* Returns the node based on pci bus */
137static inline int __pcibus_to_node(const struct pci_bus *bus)
138{
139 const struct pci_sysdata *sd = bus->sysdata;
140
141 return sd->node;
142}
143
144static inline const struct cpumask *
145cpumask_of_pcibus(const struct pci_bus *bus)
146{
147 return cpumask_of_node(__pcibus_to_node(bus));
148}
149#endif
150
151#endif /* _ASM_X86_PCI_H */