Merge tag 'meminit-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
[sfrench/cifs-2.6.git] / arch / ia64 / kernel / dma-mapping.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/dma-direct.h>
3 #include <linux/swiotlb.h>
4 #include <linux/export.h>
5
6 /* Set this to 1 if there is a HW IOMMU in the system */
7 int iommu_detected __read_mostly;
8
9 const struct dma_map_ops *dma_ops;
10 EXPORT_SYMBOL(dma_ops);
11
12 const struct dma_map_ops *dma_get_ops(struct device *dev)
13 {
14         return dma_ops;
15 }
16 EXPORT_SYMBOL(dma_get_ops);
17
18 #ifdef CONFIG_SWIOTLB
19 void *arch_dma_alloc(struct device *dev, size_t size,
20                 dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
21 {
22         return dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
23 }
24
25 void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
26                 dma_addr_t dma_addr, unsigned long attrs)
27 {
28         dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs);
29 }
30
31 long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
32                 dma_addr_t dma_addr)
33 {
34         return page_to_pfn(virt_to_page(cpu_addr));
35 }
36
37 void __init swiotlb_dma_init(void)
38 {
39         swiotlb_init(1);
40 }
41 #endif