direct-io.hg

view linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/pci.h @ 11509:2e6c10dc7c0b

[POWERPC][XEN] make sure put_domain() is called in case of allocate_rma() failuer

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
author Jimi Xenidis <jimix@watson.ibm.com>
date Tue Sep 12 10:53:46 2006 -0400 (2006-09-12)
parents 5b433b4fca34
children 3adf00179a63
line source
1 #ifndef __i386_PCI_H
2 #define __i386_PCI_H
4 #include <linux/config.h>
6 #ifdef __KERNEL__
7 #include <linux/mm.h> /* for struct page */
9 /* Can be used to override the logic in pci_scan_bus for skipping
10 already-configured bus numbers - to be used for buggy BIOSes
11 or architectures with incomplete PCI setup by the loader */
13 #ifdef CONFIG_PCI
14 extern unsigned int pcibios_assign_all_busses(void);
15 #else
16 #define pcibios_assign_all_busses() 0
17 #endif
18 #define pcibios_scan_all_fns(a, b) 0
20 extern unsigned long pci_mem_start;
21 #define PCIBIOS_MIN_IO 0x1000
22 #define PCIBIOS_MIN_MEM (pci_mem_start)
24 #define PCIBIOS_MIN_CARDBUS_IO 0x4000
26 void pcibios_config_init(void);
27 struct pci_bus * pcibios_scan_root(int bus);
29 void pcibios_set_master(struct pci_dev *dev);
30 void pcibios_penalize_isa_irq(int irq, int active);
31 struct irq_routing_table *pcibios_get_irq_routing_table(void);
32 int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
34 /* Dynamic DMA mapping stuff.
35 * i386 has everything mapped statically.
36 */
38 #include <linux/types.h>
39 #include <linux/slab.h>
40 #include <asm/scatterlist.h>
41 #include <linux/string.h>
42 #include <asm/io.h>
44 struct pci_dev;
46 #ifdef CONFIG_SWIOTLB
49 /* On Xen we use SWIOTLB instead of blk-specific bounce buffers. */
50 #define PCI_DMA_BUS_IS_PHYS (0)
52 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
53 dma_addr_t ADDR_NAME;
54 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
55 __u32 LEN_NAME;
56 #define pci_unmap_addr(PTR, ADDR_NAME) \
57 ((PTR)->ADDR_NAME)
58 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
59 (((PTR)->ADDR_NAME) = (VAL))
60 #define pci_unmap_len(PTR, LEN_NAME) \
61 ((PTR)->LEN_NAME)
62 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
63 (((PTR)->LEN_NAME) = (VAL))
65 #else
67 /* The PCI address space does equal the physical memory
68 * address space. The networking and block device layers use
69 * this boolean for bounce buffer decisions.
70 */
71 #define PCI_DMA_BUS_IS_PHYS (1)
73 /* pci_unmap_{page,single} is a nop so... */
74 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
75 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
76 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
77 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
78 #define pci_unmap_len(PTR, LEN_NAME) (0)
79 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
81 #endif
83 /* This is always fine. */
84 #define pci_dac_dma_supported(pci_dev, mask) (1)
86 static inline dma64_addr_t
87 pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
88 {
89 return ((dma64_addr_t) page_to_phys(page) +
90 (dma64_addr_t) offset);
91 }
93 static inline struct page *
94 pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
95 {
96 return pfn_to_page(dma_addr >> PAGE_SHIFT);
97 }
99 static inline unsigned long
100 pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
101 {
102 return (dma_addr & ~PAGE_MASK);
103 }
105 static inline void
106 pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
107 {
108 }
110 static inline void
111 pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
112 {
113 flush_write_buffers();
114 }
116 #define HAVE_PCI_MMAP
117 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
118 enum pci_mmap_state mmap_state, int write_combine);
121 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
122 {
123 }
125 #ifdef CONFIG_PCI
126 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
127 enum pci_dma_burst_strategy *strat,
128 unsigned long *strategy_parameter)
129 {
130 *strat = PCI_DMA_BURST_INFINITY;
131 *strategy_parameter = ~0UL;
132 }
133 #endif
135 #endif /* __KERNEL__ */
137 #ifdef CONFIG_XEN_PCIDEV_FRONTEND
138 #include <xen/pcifront.h>
139 #endif /* CONFIG_XEN_PCIDEV_FRONTEND */
141 /* implement the pci_ DMA API in terms of the generic device dma_ one */
142 #include <asm-generic/pci-dma-compat.h>
144 /* generic pci stuff */
145 #include <asm-generic/pci.h>
147 /* On Xen we have to scan all functions since Xen hides bridges from
148 * us. If a bridge is at fn=0 and that slot has a multifunction
149 * device, we won't find the additional devices without scanning all
150 * functions. */
151 #undef pcibios_scan_all_fns
152 #define pcibios_scan_all_fns(a, b) 1
154 #endif /* __i386_PCI_H */