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-rw-r--r--arch/sparc/include/asm/pci_32.h171
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pci_32.h b/arch/sparc/include/asm/pci_32.h
new file mode 100644
index 000000000000..0ee949d220c0
--- /dev/null
+++ b/arch/sparc/include/asm/pci_32.h
@@ -0,0 +1,171 @@
1#ifndef __SPARC_PCI_H
2#define __SPARC_PCI_H
3
4#ifdef __KERNEL__
5
6/* Can be used to override the logic in pci_scan_bus for skipping
7 * already-configured bus numbers - to be used for buggy BIOSes
8 * or architectures with incomplete PCI setup by the loader.
9 */
10#define pcibios_assign_all_busses() 0
11#define pcibios_scan_all_fns(a, b) 0
12
13#define PCIBIOS_MIN_IO 0UL
14#define PCIBIOS_MIN_MEM 0UL
15
16#define PCI_IRQ_NONE 0xffffffff
17
18static inline void pcibios_set_master(struct pci_dev *dev)
19{
20 /* No special bus mastering setup handling */
21}
22
23static inline void pcibios_penalize_isa_irq(int irq, int active)
24{
25 /* We don't do dynamic PCI IRQ allocation */
26}
27
28/* Dynamic DMA mapping stuff.
29 */
30#define PCI_DMA_BUS_IS_PHYS (0)
31
32#include <asm/scatterlist.h>
33
34struct pci_dev;
35
36/* Allocate and map kernel buffer using consistent mode DMA for a device.
37 * hwdev should be valid struct pci_dev pointer for PCI devices.
38 */
39extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle);
40
41/* Free and unmap a consistent DMA buffer.
42 * cpu_addr is what was returned from pci_alloc_consistent,
43 * size must be the same as what as passed into pci_alloc_consistent,
44 * and likewise dma_addr must be the same as what *dma_addrp was set to.
45 *
46 * References to the memory and mappings assosciated with cpu_addr/dma_addr
47 * past this call are illegal.
48 */
49extern void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle);
50
51/* Map a single buffer of the indicated size for DMA in streaming mode.
52 * The 32-bit bus address to use is returned.
53 *
54 * Once the device is given the dma address, the device owns this memory
55 * until either pci_unmap_single or pci_dma_sync_single_for_cpu is performed.
56 */
57extern dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction);
58
59/* Unmap a single streaming mode DMA translation. The dma_addr and size
60 * must match what was provided for in a previous pci_map_single call. All
61 * other usages are undefined.
62 *
63 * After this call, reads by the cpu to the buffer are guaranteed to see
64 * whatever the device wrote there.
65 */
66extern void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, size_t size, int direction);
67
68/* pci_unmap_{single,page} is not a nop, thus... */
69#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
70 dma_addr_t ADDR_NAME;
71#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
72 __u32 LEN_NAME;
73#define pci_unmap_addr(PTR, ADDR_NAME) \
74 ((PTR)->ADDR_NAME)
75#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
76 (((PTR)->ADDR_NAME) = (VAL))
77#define pci_unmap_len(PTR, LEN_NAME) \
78 ((PTR)->LEN_NAME)
79#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
80 (((PTR)->LEN_NAME) = (VAL))
81
82/*
83 * Same as above, only with pages instead of mapped addresses.
84 */
85extern dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page,
86 unsigned long offset, size_t size, int direction);
87extern void pci_unmap_page(struct pci_dev *hwdev,
88 dma_addr_t dma_address, size_t size, int direction);
89
90/* Map a set of buffers described by scatterlist in streaming
91 * mode for DMA. This is the scather-gather version of the
92 * above pci_map_single interface. Here the scatter gather list
93 * elements are each tagged with the appropriate dma address
94 * and length. They are obtained via sg_dma_{address,length}(SG).
95 *
96 * NOTE: An implementation may be able to use a smaller number of
97 * DMA address/length pairs than there are SG table elements.
98 * (for example via virtual mapping capabilities)
99 * The routine returns the number of addr/length pairs actually
100 * used, at most nents.
101 *
102 * Device ownership issues as mentioned above for pci_map_single are
103 * the same here.
104 */
105extern int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction);
106
107/* Unmap a set of streaming mode DMA translations.
108 * Again, cpu read rules concerning calls here are the same as for
109 * pci_unmap_single() above.
110 */
111extern void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nhwents, int direction);
112
113/* Make physical memory consistent for a single
114 * streaming mode DMA translation after a transfer.
115 *
116 * If you perform a pci_map_single() but wish to interrogate the
117 * buffer using the cpu, yet do not wish to teardown the PCI dma
118 * mapping, you must call this function before doing so. At the
119 * next point you give the PCI dma address back to the card, you
120 * must first perform a pci_dma_sync_for_device, and then the device
121 * again owns the buffer.
122 */
123extern void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction);
124extern void pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle, size_t size, int direction);
125
126/* Make physical memory consistent for a set of streaming
127 * mode DMA translations after a transfer.
128 *
129 * The same as pci_dma_sync_single_* but for a scatter-gather list,
130 * same rules and usage.
131 */
132extern void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction);
133extern void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, int nelems, int direction);
134
135/* Return whether the given PCI device DMA address mask can
136 * be supported properly. For example, if your device can
137 * only drive the low 24-bits during PCI bus mastering, then
138 * you would pass 0x00ffffff as the mask to this function.
139 */
140static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
141{
142 return 1;
143}
144
145#ifdef CONFIG_PCI
146static inline void pci_dma_burst_advice(struct pci_dev *pdev,
147 enum pci_dma_burst_strategy *strat,
148 unsigned long *strategy_parameter)
149{
150 *strat = PCI_DMA_BURST_INFINITY;
151 *strategy_parameter = ~0UL;
152}
153#endif
154
155#define PCI_DMA_ERROR_CODE (~(dma_addr_t)0x0)
156
157static inline int pci_dma_mapping_error(struct pci_dev *pdev,
158 dma_addr_t dma_addr)
159{
160 return (dma_addr == PCI_DMA_ERROR_CODE);
161}
162
163struct device_node;
164extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
165
166#endif /* __KERNEL__ */
167
168/* generic pci stuff */
169#include <asm-generic/pci.h>
170
171#endif /* __SPARC_PCI_H */
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