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/* pci_unmap_{page,single} is a nop so... */
65#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
66#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
67#define pci_unmap_addr(PTR, ADDR_NAME) (0)
68#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
69#define pci_unmap_len(PTR, LEN_NAME) (0)
70#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
71
72#ifdef CONFIG_PCI
73static inline void pci_dma_burst_advice(struct pci_dev *pdev,
74 enum pci_dma_burst_strategy *strat,
75 unsigned long *strategy_parameter)
76{
77 *strat = PCI_DMA_BURST_INFINITY;
78 *strategy_parameter = ~0UL;
79}
80#endif
81
82/*
83 * At present there are very few 32-bit PPC machines that can have
84 * memory above the 4GB point, and we don't support that.
85 */
86#define pci_dac_dma_supported(pci_dev, mask) (0)
87
88/* Return the index of the PCI controller for device PDEV. */
89#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
90
91/* Set the name of the bus as it appears in /proc/bus/pci */
92static inline int pci_proc_domain(struct pci_bus *bus)
93{
94 return 0;
95}
96
97/* Map a range of PCI memory or I/O space for a device into user space */
98int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
99 enum pci_mmap_state mmap_state, int write_combine);
100
101/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
102#define HAVE_PCI_MMAP 1
103
104extern void
105pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
106 struct resource *res);
107
108extern void
109pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
110 struct pci_bus_region *region);
111
112static inline struct resource *
113pcibios_select_root(struct pci_dev *pdev, struct resource *res)
114{
115 struct resource *root = NULL;
116
117 if (res->flags & IORESOURCE_IO)
118 root = &ioport_resource;
119 if (res->flags & IORESOURCE_MEM)
120 root = &iomem_resource;
121
122 return root;
123}
124
125extern void pcibios_add_platform_entries(struct pci_dev *dev);
126
127struct file;
128extern pgprot_t pci_phys_mem_access_prot(struct file *file,
129 unsigned long pfn,
130 unsigned long size,
131 pgprot_t prot);
132
133#define HAVE_ARCH_PCI_RESOURCE_TO_USER
134extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
135 const struct resource *rsrc,
136 u64 *start, u64 *end);
137
138
139#endif /* __KERNEL__ */
140
141#endif /* __PPC_PCI_H */