// SPDX-License-Identifier: GPL-2.0-only
#include <linux/cpu.h>
+#include <linux/dma-direct.h>
#include <linux/dma-noncoherent.h>
#include <linux/gfp.h>
#include <linux/highmem.h>
* dma-direct functions, otherwise we call the Xen specific version.
*/
void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle,
- phys_addr_t paddr, size_t size,
- enum dma_data_direction dir)
+ size_t size, enum dma_data_direction dir)
{
- if (pfn_valid(PFN_DOWN(handle)))
- arch_sync_dma_for_cpu(paddr, size, dir);
- else if (dir != DMA_TO_DEVICE)
+ if (dir != DMA_TO_DEVICE)
dma_cache_maint(handle, size, GNTTAB_CACHE_INVAL);
}
void xen_dma_sync_for_device(struct device *dev, dma_addr_t handle,
- phys_addr_t paddr, size_t size,
- enum dma_data_direction dir)
+ size_t size, enum dma_data_direction dir)
{
- if (pfn_valid(PFN_DOWN(handle)))
- arch_sync_dma_for_device(paddr, size, dir);
- else if (dir == DMA_FROM_DEVICE)
+ if (dir == DMA_FROM_DEVICE)
dma_cache_maint(handle, size, GNTTAB_CACHE_INVAL);
else
dma_cache_maint(handle, size, GNTTAB_CACHE_CLEAN);
dma_addr_t dev_addr)
{
unsigned int xen_pfn = XEN_PFN_DOWN(phys);
- unsigned int bfn = XEN_PFN_DOWN(dev_addr);
+ unsigned int bfn = XEN_PFN_DOWN(dma_to_phys(dev, dev_addr));
/*
* The swiotlb buffer should be used if
}
done:
- if (!dev_is_dma_coherent(dev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- xen_dma_sync_for_device(dev, dev_addr, phys, size, dir);
+ if (!dev_is_dma_coherent(dev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) {
+ if (pfn_valid(PFN_DOWN(dma_to_phys(dev, dev_addr))))
+ arch_sync_dma_for_device(phys, size, dir);
+ else
+ xen_dma_sync_for_device(dev, dev_addr, size, dir);
+ }
return dev_addr;
}
BUG_ON(dir == DMA_NONE);
- if (!dev_is_dma_coherent(hwdev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- xen_dma_sync_for_cpu(hwdev, dev_addr, paddr, size, dir);
+ if (!dev_is_dma_coherent(hwdev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) {
+ if (pfn_valid(PFN_DOWN(dma_to_phys(hwdev, dev_addr))))
+ arch_sync_dma_for_cpu(paddr, size, dir);
+ else
+ xen_dma_sync_for_cpu(hwdev, dev_addr, size, dir);
+ }
/* NOTE: We use dev_addr here, not paddr! */
if (is_xen_swiotlb_buffer(hwdev, dev_addr))
{
phys_addr_t paddr = xen_dma_to_phys(dev, dma_addr);
- if (!dev_is_dma_coherent(dev))
- xen_dma_sync_for_cpu(dev, dma_addr, paddr, size, dir);
+ if (!dev_is_dma_coherent(dev)) {
+ if (pfn_valid(PFN_DOWN(dma_to_phys(dev, dma_addr))))
+ arch_sync_dma_for_cpu(paddr, size, dir);
+ else
+ xen_dma_sync_for_cpu(dev, dma_addr, size, dir);
+ }
if (is_xen_swiotlb_buffer(dev, dma_addr))
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU);
if (is_xen_swiotlb_buffer(dev, dma_addr))
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_DEVICE);
- if (!dev_is_dma_coherent(dev))
- xen_dma_sync_for_device(dev, dma_addr, paddr, size, dir);
+ if (!dev_is_dma_coherent(dev)) {
+ if (pfn_valid(PFN_DOWN(dma_to_phys(dev, dma_addr))))
+ arch_sync_dma_for_device(paddr, size, dir);
+ else
+ xen_dma_sync_for_device(dev, dma_addr, size, dir);
+ }
}
/*
#include <linux/swiotlb.h>
void xen_dma_sync_for_cpu(struct device *dev, dma_addr_t handle,
- phys_addr_t paddr, size_t size,
- enum dma_data_direction dir);
+ size_t size, enum dma_data_direction dir);
void xen_dma_sync_for_device(struct device *dev, dma_addr_t handle,
- phys_addr_t paddr, size_t size,
- enum dma_data_direction dir);
+ size_t size, enum dma_data_direction dir);
extern int xen_swiotlb_init(int verbose, bool early);
extern const struct dma_map_ops xen_swiotlb_dma_ops;