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Linux kernel mirror (for testing)
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kernel
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linux
1#ifndef __ASM_POWERPC_PCI_H
2#define __ASM_POWERPC_PCI_H
3#ifdef __KERNEL__
4
5/*
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <linux/string.h>
15#include <linux/dma-mapping.h>
16#include <linux/scatterlist.h>
17
18#include <asm/machdep.h>
19#include <asm/io.h>
20#include <asm/prom.h>
21#include <asm/pci-bridge.h>
22
23/* Return values for pci_controller_ops.probe_mode function */
24#define PCI_PROBE_NONE -1 /* Don't look at this bus at all */
25#define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */
26#define PCI_PROBE_DEVTREE 1 /* Instantiate from device tree */
27
28#define PCIBIOS_MIN_IO 0x1000
29#define PCIBIOS_MIN_MEM 0x10000000
30
31struct pci_dev;
32
33/* Values for the `which' argument to sys_pciconfig_iobase syscall. */
34#define IOBASE_BRIDGE_NUMBER 0
35#define IOBASE_MEMORY 1
36#define IOBASE_IO 2
37#define IOBASE_ISA_IO 3
38#define IOBASE_ISA_MEM 4
39
40/*
41 * Set this to 1 if you want the kernel to re-assign all PCI
42 * bus numbers (don't do that on ppc64 yet !)
43 */
44#define pcibios_assign_all_busses() \
45 (pci_has_flag(PCI_REASSIGN_ALL_BUS))
46
47#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
48static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
49{
50 if (ppc_md.pci_get_legacy_ide_irq)
51 return ppc_md.pci_get_legacy_ide_irq(dev, channel);
52 return channel ? 15 : 14;
53}
54
55#ifdef CONFIG_PCI
56extern void set_pci_dma_ops(const struct dma_map_ops *dma_ops);
57extern const struct dma_map_ops *get_pci_dma_ops(void);
58#else /* CONFIG_PCI */
59#define set_pci_dma_ops(d)
60#define get_pci_dma_ops() NULL
61#endif
62
63#ifdef CONFIG_PPC64
64
65/*
66 * We want to avoid touching the cacheline size or MWI bit.
67 * pSeries firmware sets the cacheline size (which is not the cpu cacheline
68 * size in all cases) and hardware treats MWI the same as memory write.
69 */
70#define PCI_DISABLE_MWI
71
72#endif /* CONFIG_PPC64 */
73
74extern int pci_domain_nr(struct pci_bus *bus);
75
76/* Decide whether to display the domain number in /proc */
77extern int pci_proc_domain(struct pci_bus *bus);
78
79struct vm_area_struct;
80/* Map a range of PCI memory or I/O space for a device into user space */
81int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
82 enum pci_mmap_state mmap_state, int write_combine);
83
84/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
85#define HAVE_PCI_MMAP 1
86
87extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
88 size_t count);
89extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
90 size_t count);
91extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
92 struct vm_area_struct *vma,
93 enum pci_mmap_state mmap_state);
94
95#define HAVE_PCI_LEGACY 1
96
97#ifdef CONFIG_PPC64
98
99/* The PCI address space does not equal the physical memory address
100 * space (we have an IOMMU). The IDE and SCSI device layers use
101 * this boolean for bounce buffer decisions.
102 */
103#define PCI_DMA_BUS_IS_PHYS (0)
104
105#else /* 32-bit */
106
107/* The PCI address space does equal the physical memory
108 * address space (no IOMMU). The IDE and SCSI device layers use
109 * this boolean for bounce buffer decisions.
110 */
111#define PCI_DMA_BUS_IS_PHYS (1)
112
113#endif /* CONFIG_PPC64 */
114
115extern void pcibios_claim_one_bus(struct pci_bus *b);
116
117extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
118
119extern void pcibios_resource_survey(void);
120
121extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
122extern int remove_phb_dynamic(struct pci_controller *phb);
123
124extern struct pci_dev *of_create_pci_dev(struct device_node *node,
125 struct pci_bus *bus, int devfn);
126
127extern void of_scan_pci_bridge(struct pci_dev *dev);
128
129extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
130extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
131
132struct file;
133extern pgprot_t pci_phys_mem_access_prot(struct file *file,
134 unsigned long pfn,
135 unsigned long size,
136 pgprot_t prot);
137
138#define HAVE_ARCH_PCI_RESOURCE_TO_USER
139
140extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose);
141extern void pcibios_setup_bus_devices(struct pci_bus *bus);
142extern void pcibios_setup_bus_self(struct pci_bus *bus);
143extern void pcibios_setup_phb_io_space(struct pci_controller *hose);
144extern void pcibios_scan_phb(struct pci_controller *hose);
145
146#endif /* __KERNEL__ */
147
148extern struct pci_dev *pnv_pci_get_gpu_dev(struct pci_dev *npdev);
149extern struct pci_dev *pnv_pci_get_npu_dev(struct pci_dev *gpdev, int index);
150
151#endif /* __ASM_POWERPC_PCI_H */