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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-frv/pci.h
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 /* Return the index of the PCI controller for device PDEV. */
44 #define pci_controller_num(PDEV) (0)
46 /* The PCI address space does equal the physical memory
47 * address space. The networking and block device layers use
48 * this boolean for bounce buffer decisions.
50 #define PCI_DMA_BUS_IS_PHYS (1)
52 /* pci_unmap_{page,single} is a nop so... */
53 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
54 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
55 #define pci_unmap_addr(PTR, ADDR_NAME) (0)
56 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
57 #define pci_unmap_len(PTR, LEN_NAME) (0)
58 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
61 static inline void pci_dma_burst_advice(struct pci_dev
*pdev
,
62 enum pci_dma_burst_strategy
*strat
,
63 unsigned long *strategy_parameter
)
65 *strat
= PCI_DMA_BURST_INFINITY
;
66 *strategy_parameter
= ~0UL;
71 * These are pretty much arbitary with the CoMEM implementation.
72 * We have the whole address space to ourselves.
74 #define PCIBIOS_MIN_IO 0x100
75 #define PCIBIOS_MIN_MEM 0x00010000
77 /* Make physical memory consistent for a single
78 * streaming mode DMA translation after a transfer.
80 * If you perform a pci_map_single() but wish to interrogate the
81 * buffer using the cpu, yet do not wish to teardown the PCI dma
82 * mapping, you must call this function before doing so. At the
83 * next point you give the PCI dma address back to the card, the
84 * device again owns the buffer.
86 static inline void pci_dma_sync_single(struct pci_dev
*hwdev
,
87 dma_addr_t dma_handle
,
88 size_t size
, int direction
)
90 if (direction
== PCI_DMA_NONE
)
93 frv_cache_wback_inv((unsigned long)bus_to_virt(dma_handle
),
94 (unsigned long)bus_to_virt(dma_handle
) + size
);
97 /* Make physical memory consistent for a set of streaming
98 * mode DMA translations after a transfer.
100 * The same as pci_dma_sync_single but for a scatter-gather list,
101 * same rules and usage.
103 static inline void pci_dma_sync_sg(struct pci_dev
*hwdev
,
104 struct scatterlist
*sg
,
105 int nelems
, int direction
)
109 if (direction
== PCI_DMA_NONE
)
112 for (i
= 0; i
< nelems
; i
++)
113 frv_cache_wback_inv(sg_dma_address(&sg
[i
]),
114 sg_dma_address(&sg
[i
])+sg_dma_len(&sg
[i
]));