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swiotlb-xen: add struct device * parameter to xen_dma_sync_for_cpu

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No functional changes. The parameter is unused in this patch but will be
used by next patches.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Tested-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Roman Shaposhnik <roman@zededa.com>
Link: https://lore.kernel.org/r/20200710223427.6897-5-sstabellini@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Stefano Stabellini 2020-07-10 15:34:21 -07:00 committed by Juergen Gross
parent d900781a17
commit 297f7f8263
3 changed files with 8 additions and 6 deletions
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5
arch/arm/xen/mm.c
View File

@ -71,8 +71,9 @@ static void dma_cache_maint(dma_addr_t handle, size_t size, u32 op)
* pfn_valid returns true the pages is local and we can use the native
* dma-direct functions, otherwise we call the Xen specific version.
*/
void xen_dma_sync_for_cpu(dma_addr_t handle, phys_addr_t paddr, size_t size,
enum dma_data_direction dir)
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)
{
if (pfn_valid(PFN_DOWN(handle)))
arch_sync_dma_for_cpu(paddr, size, dir);

4
drivers/xen/swiotlb-xen.c
View File

@ -428,7 +428,7 @@ static void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
BUG_ON(dir == DMA_NONE);
if (!dev_is_dma_coherent(hwdev) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC))
xen_dma_sync_for_cpu(dev_addr, paddr, size, dir);
xen_dma_sync_for_cpu(hwdev, dev_addr, paddr, size, dir);
/* NOTE: We use dev_addr here, not paddr! */
if (is_xen_swiotlb_buffer(dev_addr))
@ -442,7 +442,7 @@ xen_swiotlb_sync_single_for_cpu(struct device *dev, dma_addr_t dma_addr,
phys_addr_t paddr = xen_bus_to_phys(dev, dma_addr);
if (!dev_is_dma_coherent(dev))
xen_dma_sync_for_cpu(dma_addr, paddr, size, dir);
xen_dma_sync_for_cpu(dev, dma_addr, paddr, size, dir);
if (is_xen_swiotlb_buffer(dma_addr))
swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU);

5
include/xen/swiotlb-xen.h
View File

@ -4,8 +4,9 @@
#include <linux/swiotlb.h>
void xen_dma_sync_for_cpu(dma_addr_t handle, phys_addr_t paddr, size_t size,
enum dma_data_direction dir);
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);
void xen_dma_sync_for_device(dma_addr_t handle, phys_addr_t paddr, size_t size,
enum dma_data_direction dir);