mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-21 10:05:00 +08:00
baa676fcf8
Adapt core x86 and IA64 architecture code for dma_map_ops changes: replace alloc/free_coherent with generic alloc/free methods. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> [removed swiotlb related changes and replaced it with wrappers, merged with IA64 patch to avoid inter-patch dependences in intel-iommu code] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Luck <tony.luck@intel.com>
68 lines
1.7 KiB
C
68 lines
1.7 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,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
if (dev->coherent_dma_mask != DMA_BIT_MASK(64))
|
|
gfp |= GFP_DMA;
|
|
return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
|
|
}
|
|
|
|
static void ia64_swiotlb_free_coherent(struct device *dev, size_t size,
|
|
void *vaddr, dma_addr_t dma_addr,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
swiotlb_free_coherent(dev, size, vaddr, dma_addr);
|
|
}
|
|
|
|
struct dma_map_ops swiotlb_dma_ops = {
|
|
.alloc = ia64_swiotlb_alloc_coherent,
|
|
.free = ia64_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
|
|
}
|
|
}
|