1#ifndef __PPC64_PCI_H
2#define __PPC64_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/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
13#define IOBASE_BRIDGE_NUMBER	0
14#define IOBASE_MEMORY		1
15#define IOBASE_IO		2
16#define IOBASE_ISA_IO           3
17#define IOBASE_ISA_MEM          4
18
19/* Can be used to override the logic in pci_scan_bus for skipping
20 * already-configured bus numbers - to be used for buggy BIOSes
21 * or architectures with incomplete PCI setup by the loader.
22 */
23extern int pcibios_assign_all_busses(void);
24
25#define PCIBIOS_MIN_IO		0x1000
26#define PCIBIOS_MIN_MEM		0x10000000
27
28static inline void pcibios_set_master(struct pci_dev *dev)
29{
30	/* No special bus mastering setup handling */
31}
32
33static inline void pcibios_penalize_isa_irq(int irq)
34{
35	/* We don't do dynamic PCI IRQ allocation */
36}
37
38#include <linux/types.h>
39#include <linux/slab.h>
40#include <linux/string.h>
41#include <asm/scatterlist.h>
42#include <asm/io.h>
43#include <asm/prom.h>
44
45struct pci_dev;
46#define REG_SAVE_SIZE 64
47/************************************************************************
48 * Structure to hold the data for PCI Register Save/Restore functions.  *
49 ************************************************************************/
50struct pci_config_reg_save_area {
51	struct pci_dev* PciDev;	    /* Pointer to device(Sanity Check)     */
52	int    Flags;               /* Control & Info Flags                */
53	int    RCode;               /* Return Code on Save/Restore         */
54	int    Register;            /* Pointer to current register.        */
55	u8     Regs[REG_SAVE_SIZE]; /* Save Area                           */
56};
57/************************************************************************
58 * Functions to support device reset                                    *
59 ************************************************************************/
60extern int   pci_reset_device(struct pci_dev*, int, int);
61extern int   pci_save_config_regs(struct pci_dev*,struct pci_config_reg_save_area*);
62extern int   pci_restore_config_regs(struct pci_dev*,struct pci_config_reg_save_area*);
63extern char* pci_card_location(struct pci_dev*);
64
65extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
66				  dma_addr_t *dma_handle);
67extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
68				void *vaddr, dma_addr_t dma_handle);
69
70extern dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
71					size_t size, int direction);
72extern void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
73                             size_t size, int direction);
74extern int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
75                      int nents, int direction);
76extern void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
77                         int nents, int direction);
78
79extern void pSeries_pcibios_init_early(void);
80
81static inline void pci_dma_sync_single(struct pci_dev *hwdev,
82				       dma_addr_t dma_handle,
83				       size_t size, int direction)
84{
85	if (direction == PCI_DMA_NONE)
86		BUG();
87	/* nothing to do */
88}
89
90static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
91				   struct scatterlist *sg,
92				   int nelems, int direction)
93{
94	if (direction == PCI_DMA_NONE)
95		BUG();
96	/* nothing to do */
97}
98
99/* Return whether the given PCI device DMA address mask can
100 * be supported properly.  For example, if your device can
101 * only drive the low 24-bits during PCI bus mastering, then
102 * you would pass 0x00ffffff as the mask to this function.
103 */
104static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
105{
106	return 1;
107}
108
109/* Return the index of the PCI controller for device PDEV. */
110extern int pci_controller_num(struct pci_dev *pdev);
111
112struct vm_area_struct;
113/* Map a range of PCI memory or I/O space for a device into user space */
114int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
115			enum pci_mmap_state mmap_state, int write_combine);
116
117/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
118#define HAVE_PCI_MMAP	1
119
120#define sg_dma_address(sg)	((sg)->dma_address)
121#define sg_dma_len(sg)		((sg)->dma_length)
122
123#define pci_map_page(dev, page, off, size, dir) \
124		pci_map_single(dev, (page_address(page) + (off)), size, dir)
125#define pci_unmap_page(dev,addr,sz,dir) pci_unmap_single(dev,addr,sz,dir)
126
127/* pci_unmap_{single,page} is not a nop, thus... */
128#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)	\
129	dma_addr_t ADDR_NAME;
130#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)		\
131	__u32 LEN_NAME;
132#define pci_unmap_addr(PTR, ADDR_NAME)			\
133	((PTR)->ADDR_NAME)
134#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)		\
135	(((PTR)->ADDR_NAME) = (VAL))
136#define pci_unmap_len(PTR, LEN_NAME)			\
137	((PTR)->LEN_NAME)
138#define pci_unmap_len_set(PTR, LEN_NAME, VAL)		\
139	(((PTR)->LEN_NAME) = (VAL))
140
141#define pci_dac_dma_supported(pci_dev, mask)	(0)
142
143/* The PCI address space does equal the physical memory
144 * address space.  The networking and block device layers use
145 * this boolean for bounce buffer decisions.
146 */
147#define PCI_DMA_BUS_IS_PHYS	(0)
148
149#endif	/* __KERNEL__ */
150
151#endif /* __PPC64_PCI_H */
152