mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
46a7fa270a
gart.h has only GART-specific stuff. Only GART code needs it. Other IOMMU stuff should include iommu.h instead of gart.h. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Glue code to lib/swiotlb.c */
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/cache.h>
|
|
#include <linux/module.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include <asm/iommu.h>
|
|
#include <asm/swiotlb.h>
|
|
#include <asm/dma.h>
|
|
|
|
int swiotlb __read_mostly;
|
|
|
|
static dma_addr_t
|
|
swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
|
|
int direction)
|
|
{
|
|
return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
|
|
}
|
|
|
|
const struct dma_mapping_ops swiotlb_dma_ops = {
|
|
.mapping_error = swiotlb_dma_mapping_error,
|
|
.alloc_coherent = swiotlb_alloc_coherent,
|
|
.free_coherent = swiotlb_free_coherent,
|
|
.map_single = swiotlb_map_single_phys,
|
|
.unmap_single = swiotlb_unmap_single,
|
|
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
|
|
.sync_single_for_device = swiotlb_sync_single_for_device,
|
|
.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
|
|
.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
|
|
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
|
|
.sync_sg_for_device = swiotlb_sync_sg_for_device,
|
|
.map_sg = swiotlb_map_sg,
|
|
.unmap_sg = swiotlb_unmap_sg,
|
|
.dma_supported = NULL,
|
|
};
|
|
|
|
void __init pci_swiotlb_init(void)
|
|
{
|
|
/* don't initialize swiotlb if iommu=off (no_iommu=1) */
|
|
if (!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN)
|
|
swiotlb = 1;
|
|
if (swiotlb_force)
|
|
swiotlb = 1;
|
|
if (swiotlb) {
|
|
printk(KERN_INFO "PCI-DMA: Using software bounce buffering for IO (SWIOTLB)\n");
|
|
swiotlb_init();
|
|
dma_ops = &swiotlb_dma_ops;
|
|
}
|
|
}
|