arm64/xen: fix xen-swiotlb cache flushing
Xen-swiotlb hooks into the arm/arm64 arch code through a copy of the DMA
DMA mapping operations stored in the struct device arch data.
Switching arm64 to use the direct calls for the merged DMA direct /
swiotlb code broke this scheme. Replace the indirect calls with
direct-calls in xen-swiotlb as well to fix this problem.
Fixes: 356da6d0cd
("dma-mapping: bypass indirect calls for dma-direct")
Reported-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Родитель
333478a7eb
Коммит
60d8cd572f
|
@ -1 +1,95 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#ifndef _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||
#define _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <asm/page.h>
|
||||
#include <xen/arm/page-coherent.h>
|
||||
|
||||
static inline const struct dma_map_ops *xen_get_dma_ops(struct device *dev)
|
||||
{
|
||||
if (dev && dev->archdata.dev_dma_ops)
|
||||
return dev->archdata.dev_dma_ops;
|
||||
return get_arch_dma_ops(NULL);
|
||||
}
|
||||
|
||||
static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
|
||||
{
|
||||
return xen_get_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
|
||||
{
|
||||
xen_get_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long page_pfn = page_to_xen_pfn(page);
|
||||
unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
|
||||
unsigned long compound_pages =
|
||||
(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
|
||||
bool local = (page_pfn <= dev_pfn) &&
|
||||
(dev_pfn - page_pfn < compound_pages);
|
||||
|
||||
/*
|
||||
* Dom0 is mapped 1:1, while the Linux page can span across
|
||||
* multiple Xen pages, it's not possible for it to contain a
|
||||
* mix of local and foreign Xen pages. So if the first xen_pfn
|
||||
* == mfn the page is local otherwise it's a foreign page
|
||||
* grant-mapped in dom0. If the page is local we can safely
|
||||
* call the native dma_ops function, otherwise we call the xen
|
||||
* specific function.
|
||||
*/
|
||||
if (local)
|
||||
xen_get_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
|
||||
else
|
||||
__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
/*
|
||||
* Dom0 is mapped 1:1, while the Linux page can be spanned accross
|
||||
* multiple Xen page, it's not possible to have a mix of local and
|
||||
* foreign Xen page. Dom0 is mapped 1:1, so calling pfn_valid on a
|
||||
* foreign mfn will always return false. If the page is local we can
|
||||
* safely call the native dma_ops function, otherwise we call the xen
|
||||
* specific function.
|
||||
*/
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->unmap_page)
|
||||
xen_get_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
|
||||
} else
|
||||
__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->sync_single_for_cpu)
|
||||
xen_get_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
} else
|
||||
__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->sync_single_for_device)
|
||||
xen_get_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
|
||||
} else
|
||||
__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
#endif /* _ASM_ARM_XEN_PAGE_COHERENT_H */
|
||||
|
|
|
@ -20,9 +20,6 @@ struct dev_archdata {
|
|||
#ifdef CONFIG_IOMMU_API
|
||||
void *iommu; /* private IOMMU data */
|
||||
#endif
|
||||
#ifdef CONFIG_XEN
|
||||
const struct dma_map_ops *dev_dma_ops;
|
||||
#endif
|
||||
};
|
||||
|
||||
struct pdev_archdata {
|
||||
|
|
|
@ -1 +1,77 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#ifndef _ASM_ARM64_XEN_PAGE_COHERENT_H
|
||||
#define _ASM_ARM64_XEN_PAGE_COHERENT_H
|
||||
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <asm/page.h>
|
||||
#include <xen/arm/page-coherent.h>
|
||||
|
||||
static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
|
||||
{
|
||||
return dma_direct_alloc(hwdev, size, dma_handle, flags, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
|
||||
{
|
||||
dma_direct_free(hwdev, size, cpu_addr, dma_handle, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
|
||||
if (pfn_valid(pfn))
|
||||
dma_direct_sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
else
|
||||
__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
if (pfn_valid(pfn))
|
||||
dma_direct_sync_single_for_device(hwdev, handle, size, dir);
|
||||
else
|
||||
__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long page_pfn = page_to_xen_pfn(page);
|
||||
unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
|
||||
unsigned long compound_pages =
|
||||
(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
|
||||
bool local = (page_pfn <= dev_pfn) &&
|
||||
(dev_pfn - page_pfn < compound_pages);
|
||||
|
||||
if (local)
|
||||
dma_direct_map_page(hwdev, page, offset, size, dir, attrs);
|
||||
else
|
||||
__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
/*
|
||||
* Dom0 is mapped 1:1, while the Linux page can be spanned accross
|
||||
* multiple Xen page, it's not possible to have a mix of local and
|
||||
* foreign Xen page. Dom0 is mapped 1:1, so calling pfn_valid on a
|
||||
* foreign mfn will always return false. If the page is local we can
|
||||
* safely call the native dma_ops function, otherwise we call the xen
|
||||
* specific function.
|
||||
*/
|
||||
if (pfn_valid(pfn))
|
||||
dma_direct_unmap_page(hwdev, handle, size, dir, attrs);
|
||||
else
|
||||
__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
|
||||
}
|
||||
|
||||
#endif /* _ASM_ARM64_XEN_PAGE_COHERENT_H */
|
||||
|
|
|
@ -466,9 +466,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
|
|||
__iommu_setup_dma_ops(dev, dma_base, size, iommu);
|
||||
|
||||
#ifdef CONFIG_XEN
|
||||
if (xen_initial_domain()) {
|
||||
dev->archdata.dev_dma_ops = dev->dma_ops;
|
||||
if (xen_initial_domain())
|
||||
dev->dma_ops = xen_dma_ops;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
|
|
@ -645,7 +645,7 @@ xen_swiotlb_dma_mmap(struct device *dev, struct vm_area_struct *vma,
|
|||
void *cpu_addr, dma_addr_t dma_addr, size_t size,
|
||||
unsigned long attrs)
|
||||
{
|
||||
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
|
||||
#ifdef CONFIG_ARM
|
||||
if (xen_get_dma_ops(dev)->mmap)
|
||||
return xen_get_dma_ops(dev)->mmap(dev, vma, cpu_addr,
|
||||
dma_addr, size, attrs);
|
||||
|
@ -662,7 +662,7 @@ xen_swiotlb_get_sgtable(struct device *dev, struct sg_table *sgt,
|
|||
void *cpu_addr, dma_addr_t handle, size_t size,
|
||||
unsigned long attrs)
|
||||
{
|
||||
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
|
||||
#ifdef CONFIG_ARM
|
||||
if (xen_get_dma_ops(dev)->get_sgtable) {
|
||||
#if 0
|
||||
/*
|
||||
|
|
|
@ -1,17 +1,6 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#ifndef _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||
#define _ASM_ARM_XEN_PAGE_COHERENT_H
|
||||
|
||||
#include <asm/page.h>
|
||||
#include <asm/dma-mapping.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
|
||||
static inline const struct dma_map_ops *xen_get_dma_ops(struct device *dev)
|
||||
{
|
||||
if (dev && dev->archdata.dev_dma_ops)
|
||||
return dev->archdata.dev_dma_ops;
|
||||
return get_arch_dma_ops(NULL);
|
||||
}
|
||||
#ifndef _XEN_ARM_PAGE_COHERENT_H
|
||||
#define _XEN_ARM_PAGE_COHERENT_H
|
||||
|
||||
void __xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||
|
@ -21,87 +10,7 @@ void __xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
|||
unsigned long attrs);
|
||||
void __xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir);
|
||||
|
||||
void __xen_dma_sync_single_for_device(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir);
|
||||
|
||||
static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flags, unsigned long attrs)
|
||||
{
|
||||
return xen_get_dma_ops(hwdev)->alloc(hwdev, size, dma_handle, flags, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
|
||||
void *cpu_addr, dma_addr_t dma_handle, unsigned long attrs)
|
||||
{
|
||||
xen_get_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
|
||||
dma_addr_t dev_addr, unsigned long offset, size_t size,
|
||||
enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long page_pfn = page_to_xen_pfn(page);
|
||||
unsigned long dev_pfn = XEN_PFN_DOWN(dev_addr);
|
||||
unsigned long compound_pages =
|
||||
(1<<compound_order(page)) * XEN_PFN_PER_PAGE;
|
||||
bool local = (page_pfn <= dev_pfn) &&
|
||||
(dev_pfn - page_pfn < compound_pages);
|
||||
|
||||
/*
|
||||
* Dom0 is mapped 1:1, while the Linux page can span across
|
||||
* multiple Xen pages, it's not possible for it to contain a
|
||||
* mix of local and foreign Xen pages. So if the first xen_pfn
|
||||
* == mfn the page is local otherwise it's a foreign page
|
||||
* grant-mapped in dom0. If the page is local we can safely
|
||||
* call the native dma_ops function, otherwise we call the xen
|
||||
* specific function.
|
||||
*/
|
||||
if (local)
|
||||
xen_get_dma_ops(hwdev)->map_page(hwdev, page, offset, size, dir, attrs);
|
||||
else
|
||||
__xen_dma_map_page(hwdev, page, dev_addr, offset, size, dir, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
|
||||
size_t size, enum dma_data_direction dir, unsigned long attrs)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
/*
|
||||
* Dom0 is mapped 1:1, while the Linux page can be spanned accross
|
||||
* multiple Xen page, it's not possible to have a mix of local and
|
||||
* foreign Xen page. Dom0 is mapped 1:1, so calling pfn_valid on a
|
||||
* foreign mfn will always return false. If the page is local we can
|
||||
* safely call the native dma_ops function, otherwise we call the xen
|
||||
* specific function.
|
||||
*/
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->unmap_page)
|
||||
xen_get_dma_ops(hwdev)->unmap_page(hwdev, handle, size, dir, attrs);
|
||||
} else
|
||||
__xen_dma_unmap_page(hwdev, handle, size, dir, attrs);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->sync_single_for_cpu)
|
||||
xen_get_dma_ops(hwdev)->sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
} else
|
||||
__xen_dma_sync_single_for_cpu(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
|
||||
dma_addr_t handle, size_t size, enum dma_data_direction dir)
|
||||
{
|
||||
unsigned long pfn = PFN_DOWN(handle);
|
||||
if (pfn_valid(pfn)) {
|
||||
if (xen_get_dma_ops(hwdev)->sync_single_for_device)
|
||||
xen_get_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
|
||||
} else
|
||||
__xen_dma_sync_single_for_device(hwdev, handle, size, dir);
|
||||
}
|
||||
|
||||
#endif /* _ASM_ARM_XEN_PAGE_COHERENT_H */
|
||||
#endif /* _XEN_ARM_PAGE_COHERENT_H */
|
||||
|
|
Загрузка…
Ссылка в новой задаче