tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __PPC_PCI_H
2#define __PPC_PCI_H
3#ifdef __KERNEL__
4
5#include <linux/types.h>
6#include <linux/slab.h>
7#include <linux/string.h>
8#include <linux/mm.h>
9#include <asm/scatterlist.h>
10#include <asm/io.h>
11#include <asm/pci-bridge.h>
12#include <asm-generic/pci-dma-compat.h>
13
14struct pci_dev;
15
16/* Values for the `which' argument to sys_pciconfig_iobase syscall. */
17#define IOBASE_BRIDGE_NUMBER 0
18#define IOBASE_MEMORY 1
19#define IOBASE_IO 2
20#define IOBASE_ISA_IO 3
21#define IOBASE_ISA_MEM 4
22
23/*
24 * Set this to 1 if you want the kernel to re-assign all PCI
25 * bus numbers
26 */
27extern int pci_assign_all_buses;
28
29#define pcibios_assign_all_busses() (pci_assign_all_buses)
30#define pcibios_scan_all_fns(a, b) 0
31
32#define PCIBIOS_MIN_IO 0x1000
33#define PCIBIOS_MIN_MEM 0x10000000
34
35extern inline void pcibios_set_master(struct pci_dev *dev)
36{
37 /* No special bus mastering setup handling */
38}
39
40extern inline void pcibios_penalize_isa_irq(int irq, int active)
41{
42 /* We don't do dynamic PCI IRQ allocation */
43}
44
45extern unsigned long pci_resource_to_bus(struct pci_dev *pdev, struct resource *res);
46
47/*
48 * The PCI bus bridge can translate addresses issued by the processor(s)
49 * into a different address on the PCI bus. On 32-bit cpus, we assume
50 * this mapping is 1-1, but on 64-bit systems it often isn't.
51 *
52 * Obsolete ! Drivers should now use pci_resource_to_bus
53 */
54extern unsigned long phys_to_bus(unsigned long pa);
55extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
56extern unsigned long pci_bus_to_phys(unsigned int ba, int busnr);
57
58/* The PCI address space does equal the physical memory
59 * address space. The networking and block device layers use
60 * this boolean for bounce buffer decisions.
61 */
62#define PCI_DMA_BUS_IS_PHYS (1)
63
64#ifdef CONFIG_NOT_COHERENT_CACHE
65/*
66 * pci_unmap_{page,single} are NOPs but pci_dma_sync_single_for_cpu()
67 * and so on are not, so...
68 */
69
70#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
71 dma_addr_t ADDR_NAME;
72#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
73 __u32 LEN_NAME;
74#define pci_unmap_addr(PTR, ADDR_NAME) \
75 ((PTR)->ADDR_NAME)
76#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
77 (((PTR)->ADDR_NAME) = (VAL))
78#define pci_unmap_len(PTR, LEN_NAME) \
79 ((PTR)->LEN_NAME)
80#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
81 (((PTR)->LEN_NAME) = (VAL))
82
83#else /* coherent */
84
85/* pci_unmap_{page,single} is a nop so... */
86#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
87#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
88#define pci_unmap_addr(PTR, ADDR_NAME) (0)
89#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
90#define pci_unmap_len(PTR, LEN_NAME) (0)
91#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
92
93#endif /* CONFIG_NOT_COHERENT_CACHE */
94
95#ifdef CONFIG_PCI
96static inline void pci_dma_burst_advice(struct pci_dev *pdev,
97 enum pci_dma_burst_strategy *strat,
98 unsigned long *strategy_parameter)
99{
100 *strat = PCI_DMA_BURST_INFINITY;
101 *strategy_parameter = ~0UL;
102}
103#endif
104
105/* Return the index of the PCI controller for device PDEV. */
106#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
107
108/* Set the name of the bus as it appears in /proc/bus/pci */
109static inline int pci_proc_domain(struct pci_bus *bus)
110{
111 return 0;
112}
113
114/* Map a range of PCI memory or I/O space for a device into user space */
115int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
116 enum pci_mmap_state mmap_state, int write_combine);
117
118/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
119#define HAVE_PCI_MMAP 1
120
121extern void
122pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
123 struct resource *res);
124
125extern void
126pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
127 struct pci_bus_region *region);
128
129static inline struct resource *
130pcibios_select_root(struct pci_dev *pdev, struct resource *res)
131{
132 struct resource *root = NULL;
133
134 if (res->flags & IORESOURCE_IO)
135 root = &ioport_resource;
136 if (res->flags & IORESOURCE_MEM)
137 root = &iomem_resource;
138
139 return root;
140}
141
142struct file;
143extern pgprot_t pci_phys_mem_access_prot(struct file *file,
144 unsigned long pfn,
145 unsigned long size,
146 pgprot_t prot);
147
148#define HAVE_ARCH_PCI_RESOURCE_TO_USER
149extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
150 const struct resource *rsrc,
151 resource_size_t *start, resource_size_t *end);
152
153
154#endif /* __KERNEL__ */
155
156#endif /* __PPC_PCI_H */