1/*
2 * include/asm-v850/pci.h -- PCI support
3 *
4 *  Copyright (C) 2001,02,05  NEC Corporation
5 *  Copyright (C) 2001,02,05  Miles Bader <miles@gnu.org>
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License.  See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#ifndef __V850_PCI_H__
15#define __V850_PCI_H__
16
17/* Get any platform-dependent definitions.  */
18#include <asm/machdep.h>
19
20#define pcibios_scan_all_fns(a, b)	0
21
22/* Generic declarations.  */
23
24struct scatterlist;
25
26extern void pcibios_set_master (struct pci_dev *dev);
27
28/* `Grant' to PDEV the memory block at CPU_ADDR, for doing DMA.  The
29   32-bit PCI bus mastering address to use is returned.  the device owns
30   this memory until either pci_unmap_single or pci_dma_sync_single_for_cpu is
31   performed.  */
32extern dma_addr_t
33pci_map_single (struct pci_dev *pdev, void *cpu_addr, size_t size, int dir);
34
35/* Return to the CPU the PCI DMA memory block previously `granted' to
36   PDEV, at DMA_ADDR.  */
37extern void
38pci_unmap_single (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
39		  int dir);
40
41/* Make physical memory consistent for a single streaming mode DMA
42   translation after a transfer.
43
44   If you perform a pci_map_single() but wish to interrogate the
45   buffer using the cpu, yet do not wish to teardown the PCI dma
46   mapping, you must call this function before doing so.  At the next
47   point you give the PCI dma address back to the card, you must first
48   perform a pci_dma_sync_for_device, and then the device again owns
49   the buffer.  */
50extern void
51pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr,
52			     size_t size, int dir);
53
54extern void
55pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr,
56				size_t size, int dir);
57
58
59/* Do multiple DMA mappings at once.  */
60extern int
61pci_map_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len, int dir);
62
63/* Unmap multiple DMA mappings at once.  */
64extern void
65pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,
66	      int dir);
67
68/* SG-list versions of pci_dma_sync functions.  */
69extern void
70pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
71			 struct scatterlist *sg, int sg_len,
72			 int dir);
73extern void
74pci_dma_sync_sg_for_device (struct pci_dev *dev,
75			    struct scatterlist *sg, int sg_len,
76			    int dir);
77
78#define pci_map_page(dev, page, offs, size, dir) \
79  pci_map_single(dev, (page_address(page) + (offs)), size, dir)
80#define pci_unmap_page(dev,addr,sz,dir) \
81  pci_unmap_single(dev, addr, sz, dir)
82
83/* Test for pci_map_single or pci_map_page having generated an error.  */
84static inline int
85pci_dma_mapping_error (dma_addr_t dma_addr)
86{
87	return dma_addr == 0;
88}
89
90/* Allocate and map kernel buffer using consistent mode DMA for PCI
91   device.  Returns non-NULL cpu-view pointer to the buffer if
92   successful and sets *DMA_ADDR to the pci side dma address as well,
93   else DMA_ADDR is undefined.  */
94extern void *
95pci_alloc_consistent (struct pci_dev *pdev, size_t size, dma_addr_t *dma_addr);
96
97/* Free and unmap a consistent DMA buffer.  CPU_ADDR and DMA_ADDR must
98   be values that were returned from pci_alloc_consistent.  SIZE must be
99   the same as what as passed into pci_alloc_consistent.  References to
100   the memory and mappings assosciated with CPU_ADDR or DMA_ADDR past
101   this call are illegal.  */
102extern void
103pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
104		     dma_addr_t dma_addr);
105
106#ifdef CONFIG_PCI
107static inline void pci_dma_burst_advice(struct pci_dev *pdev,
108					enum pci_dma_burst_strategy *strat,
109					unsigned long *strategy_parameter)
110{
111	*strat = PCI_DMA_BURST_INFINITY;
112	*strategy_parameter = ~0UL;
113}
114#endif
115
116extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
117extern void pci_iounmap (struct pci_dev *dev, void __iomem *addr);
118
119static inline void pcibios_add_platform_entries(struct pci_dev *dev)
120{
121}
122
123#endif /* __V850_PCI_H__ */
124