1 /* pci.h: FR-V specific PCI declarations
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 * - Derived from include/asm-m68k/pci.h
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
17 #include <asm/scatterlist.h>
18 #include <asm-generic/pci-dma-compat.h>
19 #include <asm-generic/pci.h>
23 #define pcibios_assign_all_busses() 0
25 extern void pcibios_set_master(struct pci_dev *dev);
27 extern void pcibios_penalize_isa_irq(int irq);
30 extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
31 extern void consistent_free(void *vaddr);
32 extern void consistent_sync(void *vaddr, size_t size, int direction);
33 extern void consistent_sync_page(struct page *page, unsigned long offset,
34 size_t size, int direction);
37 extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
38 dma_addr_t *dma_handle);
40 extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
41 void *vaddr, dma_addr_t dma_handle);
43 /* This is always fine. */
44 #define pci_dac_dma_supported(pci_dev, mask) (1)
46 /* Return the index of the PCI controller for device PDEV. */
47 #define pci_controller_num(PDEV) (0)
49 /* The PCI address space does equal the physical memory
50 * address space. The networking and block device layers use
51 * this boolean for bounce buffer decisions.
53 #define PCI_DMA_BUS_IS_PHYS (1)
55 /* pci_unmap_{page,single} is a nop so... */
56 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
57 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
58 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
59 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
60 #define pci_unmap_len(PTR, LEN_NAME) (0)
61 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
64 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
65 enum pci_dma_burst_strategy *strat,
66 unsigned long *strategy_parameter)
68 *strat = PCI_DMA_BURST_INFINITY;
69 *strategy_parameter = ~0UL;
74 * These are pretty much arbitary with the CoMEM implementation.
75 * We have the whole address space to ourselves.
77 #define PCIBIOS_MIN_IO 0x100
78 #define PCIBIOS_MIN_MEM 0x00010000
80 /* Make physical memory consistent for a single
81 * streaming mode DMA translation after a transfer.
83 * If you perform a pci_map_single() but wish to interrogate the
84 * buffer using the cpu, yet do not wish to teardown the PCI dma
85 * mapping, you must call this function before doing so. At the
86 * next point you give the PCI dma address back to the card, the
87 * device again owns the buffer.
89 static inline void pci_dma_sync_single(struct pci_dev *hwdev,
90 dma_addr_t dma_handle,
91 size_t size, int direction)
93 if (direction == PCI_DMA_NONE)
96 frv_cache_wback_inv((unsigned long)bus_to_virt(dma_handle),
97 (unsigned long)bus_to_virt(dma_handle) + size);
100 /* Make physical memory consistent for a set of streaming
101 * mode DMA translations after a transfer.
103 * The same as pci_dma_sync_single but for a scatter-gather list,
104 * same rules and usage.
106 static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
107 struct scatterlist *sg,
108 int nelems, int direction)
112 if (direction == PCI_DMA_NONE)
115 for (i = 0; i < nelems; i++)
116 frv_cache_wback_inv(sg_dma_address(&sg[i]),
117 sg_dma_address(&sg[i])+sg_dma_len(&sg[i]));