mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-03-02 07:14:06 +07:00
c82e4417ac
There is already dma_mapping_ops for SWIOTLB but there are some missing hooks. This is for IA64_DIG_VTD, IA64_HP_ZX1_SWIOTLB, IA64_SGI_UV, IA64_HP_SIM, IA64_XEN_GUEST and IA64_GENERIC. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
54 lines
1.5 KiB
C
54 lines
1.5 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/swiotlb.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/iommu.h>
|
|
#include <asm/machvec.h>
|
|
|
|
int swiotlb __read_mostly;
|
|
EXPORT_SYMBOL(swiotlb);
|
|
|
|
/* Set this to 1 if there is a HW IOMMU in the system */
|
|
int iommu_detected __read_mostly;
|
|
|
|
struct dma_mapping_ops swiotlb_dma_ops = {
|
|
.alloc_coherent = swiotlb_alloc_coherent,
|
|
.free_coherent = swiotlb_free_coherent,
|
|
.map_single = swiotlb_map_single,
|
|
.unmap_single = swiotlb_unmap_single,
|
|
.map_single_attrs = swiotlb_map_single_attrs,
|
|
.unmap_single_attrs = swiotlb_unmap_single_attrs,
|
|
.map_sg_attrs = swiotlb_map_sg_attrs,
|
|
.unmap_sg_attrs = swiotlb_unmap_sg_attrs,
|
|
.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_op = swiotlb_dma_supported,
|
|
.mapping_error = swiotlb_dma_mapping_error,
|
|
};
|
|
|
|
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();
|
|
dma_ops = &swiotlb_dma_ops;
|
|
#else
|
|
panic("Unable to find Intel IOMMU");
|
|
#endif
|
|
}
|
|
}
|