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Subject[PATCH v3 03/11] swiotlb-xen: add struct device * parameter to xen_phys_to_bus
Date
From: Stefano Stabellini <stefano.stabellini@xilinx.com>

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>
---
Changes in v3:
- add whitespace in title
- improve commit message
---
drivers/xen/swiotlb-xen.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 89a775948a02..dbe710a59bf2 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -57,7 +57,7 @@ static unsigned long xen_io_tlb_nslabs;
* can be 32bit when dma_addr_t is 64bit leading to a loss in
* information if the shift is done before casting to 64bit.
*/
-static inline dma_addr_t xen_phys_to_bus(phys_addr_t paddr)
+static inline dma_addr_t xen_phys_to_bus(struct device *dev, phys_addr_t paddr)
{
unsigned long bfn = pfn_to_bfn(XEN_PFN_DOWN(paddr));
dma_addr_t dma = (dma_addr_t)bfn << XEN_PAGE_SHIFT;
@@ -78,9 +78,9 @@ static inline phys_addr_t xen_bus_to_phys(dma_addr_t baddr)
return paddr;
}

-static inline dma_addr_t xen_virt_to_bus(void *address)
+static inline dma_addr_t xen_virt_to_bus(struct device *dev, void *address)
{
- return xen_phys_to_bus(virt_to_phys(address));
+ return xen_phys_to_bus(dev, virt_to_phys(address));
}

static inline int range_straddles_page_boundary(phys_addr_t p, size_t size)
@@ -309,7 +309,7 @@ xen_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
* Do not use virt_to_phys(ret) because on ARM it doesn't correspond
* to *dma_handle. */
phys = *dma_handle;
- dev_addr = xen_phys_to_bus(phys);
+ dev_addr = xen_phys_to_bus(hwdev, phys);
if (((dev_addr + size - 1 <= dma_mask)) &&
!range_straddles_page_boundary(phys, size))
*dma_handle = dev_addr;
@@ -370,7 +370,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
unsigned long attrs)
{
phys_addr_t map, phys = page_to_phys(page) + offset;
- dma_addr_t dev_addr = xen_phys_to_bus(phys);
+ dma_addr_t dev_addr = xen_phys_to_bus(dev, phys);

BUG_ON(dir == DMA_NONE);
/*
@@ -395,7 +395,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page,
return DMA_MAPPING_ERROR;

phys = map;
- dev_addr = xen_phys_to_bus(map);
+ dev_addr = xen_phys_to_bus(dev, map);

/*
* Ensure that the address returned is DMA'ble
@@ -539,7 +539,7 @@ xen_swiotlb_sync_sg_for_device(struct device *dev, struct scatterlist *sgl,
static int
xen_swiotlb_dma_supported(struct device *hwdev, u64 mask)
{
- return xen_virt_to_bus(xen_io_tlb_end - 1) <= mask;
+ return xen_virt_to_bus(hwdev, xen_io_tlb_end - 1) <= mask;
}

const struct dma_map_ops xen_swiotlb_dma_ops = {
--
2.17.1
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