pci_64.h revision ba232a1fe4d4bca18efc8966e08dbf85abf11519 
1#ifndef __SPARC64_PCI_H
2#define __SPARC64_PCI_H
3
4#ifdef __KERNEL__
5
6#include <linux/dma-mapping.h>
7
8/* Can be used to override the logic in pci_scan_bus for skipping
9 * already-configured bus numbers - to be used for buggy BIOSes
10 * or architectures with incomplete PCI setup by the loader.
11 */
12#define pcibios_assign_all_busses()	0
13
14#define PCIBIOS_MIN_IO		0UL
15#define PCIBIOS_MIN_MEM		0UL
16
17#define PCI_IRQ_NONE		0xffffffff
18
19static inline void pcibios_penalize_isa_irq(int irq, int active)
20{
21	/* We don't do dynamic PCI IRQ allocation */
22}
23
24/* The PCI address space does not equal the physical memory
25 * address space.  The networking and block device layers use
26 * this boolean for bounce buffer decisions.
27 */
28#define PCI_DMA_BUS_IS_PHYS	(0)
29
30/* PCI IOMMU mapping bypass support. */
31
32/* PCI 64-bit addressing works for all slots on all controller
33 * types on sparc64.  However, it requires that the device
34 * can drive enough of the 64 bits.
35 */
36#define PCI64_REQUIRED_MASK	(~(u64)0)
37#define PCI64_ADDR_BASE		0xfffc000000000000UL
38
39#ifdef CONFIG_PCI
40static inline void pci_dma_burst_advice(struct pci_dev *pdev,
41					enum pci_dma_burst_strategy *strat,
42					unsigned long *strategy_parameter)
43{
44	unsigned long cacheline_size;
45	u8 byte;
46
47	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
48	if (byte == 0)
49		cacheline_size = 1024;
50	else
51		cacheline_size = (int) byte * 4;
52
53	*strat = PCI_DMA_BURST_BOUNDARY;
54	*strategy_parameter = cacheline_size;
55}
56#endif
57
58/* Return the index of the PCI controller for device PDEV. */
59
60extern int pci_domain_nr(struct pci_bus *bus);
61static inline int pci_proc_domain(struct pci_bus *bus)
62{
63	return 1;
64}
65
66/* Platform support for /proc/bus/pci/X/Y mmap()s. */
67
68#define HAVE_PCI_MMAP
69#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
70#define get_pci_unmapped_area get_fb_unmapped_area
71
72extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
73			       enum pci_mmap_state mmap_state,
74			       int write_combine);
75
76extern void
77pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
78			struct resource *res);
79
80extern void
81pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
82			struct pci_bus_region *region);
83
84static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
85{
86	return PCI_IRQ_NONE;
87}
88
89#define HAVE_ARCH_PCI_RESOURCE_TO_USER
90extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
91				 const struct resource *rsrc,
92				 resource_size_t *start, resource_size_t *end);
93#endif /* __KERNEL__ */
94
95#endif /* __SPARC64_PCI_H */
96