mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
8aee5c89e1
sync_single_range_for_cpu and sync_single_range_for_device hooks in swiotlb_dma_ops are unnecessary because sync_single_for_cpu and sync_single_for_device are used there. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* Glue code to lib/swiotlb.c */
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/gfp.h>
|
|
#include <linux/cache.h>
|
|
#include <linux/module.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include <asm/swiotlb.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/iommu.h>
|
|
#include <asm/machvec.h>
|
|
|
|
int swiotlb __read_mostly;
|
|
EXPORT_SYMBOL(swiotlb);
|
|
|
|
static void *ia64_swiotlb_alloc_coherent(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t gfp)
|
|
{
|
|
if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
|
|
gfp |= GFP_DMA;
|
|
return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
|
|
}
|
|
|
|
struct dma_map_ops swiotlb_dma_ops = {
|
|
.alloc_coherent = ia64_swiotlb_alloc_coherent,
|
|
.free_coherent = swiotlb_free_coherent,
|
|
.map_page = swiotlb_map_page,
|
|
.unmap_page = swiotlb_unmap_page,
|
|
.map_sg = swiotlb_map_sg_attrs,
|
|
.unmap_sg = swiotlb_unmap_sg_attrs,
|
|
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
|
|
.sync_single_for_device = swiotlb_sync_single_for_device,
|
|
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
|
|
.sync_sg_for_device = swiotlb_sync_sg_for_device,
|
|
.dma_supported = swiotlb_dma_supported,
|
|
.mapping_error = swiotlb_dma_mapping_error,
|
|
};
|
|
|
|
void __init swiotlb_dma_init(void)
|
|
{
|
|
dma_ops = &swiotlb_dma_ops;
|
|
swiotlb_init(1);
|
|
}
|
|
|
|
void __init pci_swiotlb_init(void)
|
|
{
|
|
if (!iommu_detected) {
|
|
#ifdef CONFIG_IA64_GENERIC
|
|
swiotlb = 1;
|
|
printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
|
|
machvec_init("dig");
|
|
swiotlb_init(1);
|
|
dma_ops = &swiotlb_dma_ops;
|
|
#else
|
|
panic("Unable to find Intel IOMMU");
|
|
#endif
|
|
}
|
|
}
|