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-rw-r--r--arch/mips/mm/dma-coherent.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/arch/mips/mm/dma-coherent.c b/arch/mips/mm/dma-coherent.c
deleted file mode 100644
index 5697c6e250a3..000000000000
--- a/arch/mips/mm/dma-coherent.c
+++ /dev/null
@@ -1,254 +0,0 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
7 * Copyright (C) 2000, 2001 Ralf Baechle <ralf@gnu.org>
8 * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
9 */
10#include <linux/types.h>
11#include <linux/dma-mapping.h>
12#include <linux/mm.h>
13#include <linux/module.h>
14#include <linux/string.h>
15
16#include <asm/cache.h>
17#include <asm/io.h>
18
19void *dma_alloc_noncoherent(struct device *dev, size_t size,
20 dma_addr_t * dma_handle, gfp_t gfp)
21{
22 void *ret;
23 /* ignore region specifiers */
24 gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
25
26 if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
27 gfp |= GFP_DMA;
28 ret = (void *) __get_free_pages(gfp, get_order(size));
29
30 if (ret != NULL) {
31 memset(ret, 0, size);
32 *dma_handle = virt_to_phys(ret);
33 }
34
35 return ret;
36}
37
38EXPORT_SYMBOL(dma_alloc_noncoherent);
39
40void *dma_alloc_coherent(struct device *dev, size_t size,
41 dma_addr_t * dma_handle, gfp_t gfp)
42 __attribute__((alias("dma_alloc_noncoherent")));
43
44EXPORT_SYMBOL(dma_alloc_coherent);
45
46void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
47 dma_addr_t dma_handle)
48{
49 unsigned long addr = (unsigned long) vaddr;
50
51 free_pages(addr, get_order(size));
52}
53
54EXPORT_SYMBOL(dma_free_noncoherent);
55
56void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
57 dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
58
59EXPORT_SYMBOL(dma_free_coherent);
60
61dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
62 enum dma_data_direction direction)
63{
64 BUG_ON(direction == DMA_NONE);
65
66 return __pa(ptr);
67}
68
69EXPORT_SYMBOL(dma_map_single);
70
71void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
72 enum dma_data_direction direction)
73{
74 BUG_ON(direction == DMA_NONE);
75}
76
77EXPORT_SYMBOL(dma_unmap_single);
78
79int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
80 enum dma_data_direction direction)
81{
82 int i;
83
84 BUG_ON(direction == DMA_NONE);
85
86 for (i = 0; i < nents; i++, sg++) {
87 sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + sg->offset;
88 }
89
90 return nents;
91}
92
93EXPORT_SYMBOL(dma_map_sg);
94
95dma_addr_t dma_map_page(struct device *dev, struct page *page,
96 unsigned long offset, size_t size, enum dma_data_direction direction)
97{
98 BUG_ON(direction == DMA_NONE);
99
100 return page_to_phys(page) + offset;
101}
102
103EXPORT_SYMBOL(dma_map_page);
104
105void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
106 enum dma_data_direction direction)
107{
108 BUG_ON(direction == DMA_NONE);
109}
110
111EXPORT_SYMBOL(dma_unmap_page);
112
113void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
114 enum dma_data_direction direction)
115{
116 BUG_ON(direction == DMA_NONE);
117}
118
119EXPORT_SYMBOL(dma_unmap_sg);
120
121void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
122 size_t size, enum dma_data_direction direction)
123{
124 BUG_ON(direction == DMA_NONE);
125}
126
127EXPORT_SYMBOL(dma_sync_single_for_cpu);
128
129void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
130 size_t size, enum dma_data_direction direction)
131{
132 BUG_ON(direction == DMA_NONE);
133}
134
135EXPORT_SYMBOL(dma_sync_single_for_device);
136
137void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
138 unsigned long offset, size_t size,
139 enum dma_data_direction direction)
140{
141 BUG_ON(direction == DMA_NONE);
142}
143
144EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
145
146void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
147 unsigned long offset, size_t size,
148 enum dma_data_direction direction)
149{
150 BUG_ON(direction == DMA_NONE);
151}
152
153EXPORT_SYMBOL(dma_sync_single_range_for_device);
154
155void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
156 enum dma_data_direction direction)
157{
158 BUG_ON(direction == DMA_NONE);
159}
160
161EXPORT_SYMBOL(dma_sync_sg_for_cpu);
162
163void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
164 enum dma_data_direction direction)
165{
166 BUG_ON(direction == DMA_NONE);
167}
168
169EXPORT_SYMBOL(dma_sync_sg_for_device);
170
171int dma_mapping_error(dma_addr_t dma_addr)
172{
173 return 0;
174}
175
176EXPORT_SYMBOL(dma_mapping_error);
177
178int dma_supported(struct device *dev, u64 mask)
179{
180 /*
181 * we fall back to GFP_DMA when the mask isn't all 1s,
182 * so we can't guarantee allocations that must be
183 * within a tighter range than GFP_DMA..
184 */
185 if (mask < 0x00ffffff)
186 return 0;
187
188 return 1;
189}
190
191EXPORT_SYMBOL(dma_supported);
192
193int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
194{
195 return 1;
196}
197
198EXPORT_SYMBOL(dma_is_consistent);
199
200void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
201 enum dma_data_direction direction)
202{
203 BUG_ON(direction == DMA_NONE);
204}
205
206EXPORT_SYMBOL(dma_cache_sync);
207
208/* The DAC routines are a PCIism.. */
209
210#ifdef CONFIG_PCI
211
212#include <linux/pci.h>
213
214dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
215 struct page *page, unsigned long offset, int direction)
216{
217 return (dma64_addr_t)page_to_phys(page) + offset;
218}
219
220EXPORT_SYMBOL(pci_dac_page_to_dma);
221
222struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
223 dma64_addr_t dma_addr)
224{
225 return mem_map + (dma_addr >> PAGE_SHIFT);
226}
227
228EXPORT_SYMBOL(pci_dac_dma_to_page);
229
230unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
231 dma64_addr_t dma_addr)
232{
233 return dma_addr & ~PAGE_MASK;
234}
235
236EXPORT_SYMBOL(pci_dac_dma_to_offset);
237
238void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
239 dma64_addr_t dma_addr, size_t len, int direction)
240{
241 BUG_ON(direction == PCI_DMA_NONE);
242}
243
244EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
245
246void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
247 dma64_addr_t dma_addr, size_t len, int direction)
248{
249 BUG_ON(direction == PCI_DMA_NONE);
250}
251
252EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
253
254#endif /* CONFIG_PCI */
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-15 01:24:43 -0500