From: stefano.stabellini@eu.citrix.com (Stefano Stabellini)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v8 12/17] xen: introduce xen_dma_map/unmap_page and xen_dma_sync_single_for_cpu/device
Date: Wed, 9 Oct 2013 21:48:25 +0100 [thread overview]
Message-ID: <1381351710-1876-12-git-send-email-stefano.stabellini@eu.citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1310092109190.26077@kaball.uk.xensource.com>
Introduce xen_dma_map_page, xen_dma_unmap_page,
xen_dma_sync_single_for_cpu and xen_dma_sync_single_for_device.
They have empty implementations on x86 and ia64 but they call the
corresponding platform dma_ops function on arm and arm64.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
arch/arm/include/asm/xen/page-coherent.h | 28 ++++++++++++++++++++++++++++
arch/arm64/include/asm/xen/page-coherent.h | 25 +++++++++++++++++++++++++
arch/ia64/include/asm/xen/page-coherent.h | 14 ++++++++++++++
arch/x86/include/asm/xen/page-coherent.h | 14 ++++++++++++++
4 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/xen/page-coherent.h b/arch/arm/include/asm/xen/page-coherent.h
index c4d843c..532cffe 100644
--- a/arch/arm/include/asm/xen/page-coherent.h
+++ b/arch/arm/include/asm/xen/page-coherent.h
@@ -19,4 +19,32 @@ static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
__generic_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
}
+static inline dma_addr_t xen_dma_map_page(struct device *hwdev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ return __generic_dma_ops(hwdev)->map_page(hwdev, page, 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,
+ struct dma_attrs *attrs)
+{
+ if (__generic_dma_ops(hwdev)->unmap_page)
+ __generic_dma_ops(hwdev)->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)
+{
+ if (__generic_dma_ops(hwdev)->sync_single_for_cpu)
+ __generic_dma_ops(hwdev)->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)
+{
+ if (__generic_dma_ops(hwdev)->sync_single_for_device)
+ __generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
+}
#endif /* _ASM_ARM_XEN_PAGE_COHERENT_H */
diff --git a/arch/arm64/include/asm/xen/page-coherent.h b/arch/arm64/include/asm/xen/page-coherent.h
index 3b4f029..5abe098 100644
--- a/arch/arm64/include/asm/xen/page-coherent.h
+++ b/arch/arm64/include/asm/xen/page-coherent.h
@@ -19,4 +19,29 @@ static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
__generic_dma_ops(hwdev)->free(hwdev, size, cpu_addr, dma_handle, attrs);
}
+static inline dma_addr_t xen_dma_map_page(struct device *hwdev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
+{
+ return __generic_dma_ops(hwdev)->map_page(hwdev, page, 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,
+ struct dma_attrs *attrs)
+{
+ __generic_dma_ops(hwdev)->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)
+{
+ __generic_dma_ops(hwdev)->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)
+{
+ __generic_dma_ops(hwdev)->sync_single_for_device(hwdev, handle, size, dir);
+}
#endif /* _ASM_ARM64_XEN_PAGE_COHERENT_H */
diff --git a/arch/ia64/include/asm/xen/page-coherent.h b/arch/ia64/include/asm/xen/page-coherent.h
index 37b929c..ed2e5ed 100644
--- a/arch/ia64/include/asm/xen/page-coherent.h
+++ b/arch/ia64/include/asm/xen/page-coherent.h
@@ -21,4 +21,18 @@ static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
free_pages((unsigned long) cpu_addr, get_order(size));
}
+static inline dma_addr_t xen_dma_map_page(struct device *hwdev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs) { return page_to_phys(page); }
+
+static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *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) { }
+
+static inline void xen_dma_sync_single_for_device(struct device *hwdev,
+ dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
+
#endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */
diff --git a/arch/x86/include/asm/xen/page-coherent.h b/arch/x86/include/asm/xen/page-coherent.h
index 31de2e0..3ddc2c2 100644
--- a/arch/x86/include/asm/xen/page-coherent.h
+++ b/arch/x86/include/asm/xen/page-coherent.h
@@ -21,4 +21,18 @@ static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
free_pages((unsigned long) cpu_addr, get_order(size));
}
+static inline dma_addr_t xen_dma_map_page(struct device *hwdev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs) { return page_to_phys(page); }
+
+static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir,
+ struct dma_attrs *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) { }
+
+static inline void xen_dma_sync_single_for_device(struct device *hwdev,
+ dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
+
#endif /* _ASM_X86_XEN_PAGE_COHERENT_H */
--
1.7.2.5
next prev parent reply other threads:[~2013-10-09 20:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 20:47 [PATCH v7 0/17] enable swiotlb-xen on arm and arm64 Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 01/17] arm: make SWIOTLB available Stefano Stabellini
2013-10-10 9:43 ` Will Deacon
2013-10-15 15:45 ` Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 02/17] arm64: define DMA_ERROR_CODE Stefano Stabellini
2013-10-10 9:44 ` Will Deacon
2013-10-15 15:46 ` Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 03/17] arm/xen,arm64/xen: introduce p2m Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 04/17] xen/x86: allow __set_phys_to_machine for autotranslate guests Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 05/17] xen: make xen_create_contiguous_region return the dma address Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 06/17] xen/arm,arm64: enable SWIOTLB_XEN Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 07/17] swiotlb-xen: introduce xen_swiotlb_set_dma_mask Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 08/17] arm/xen: get_dma_ops: return xen_dma_ops if we are running as xen_initial_domain Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 09/17] arm64/xen: " Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 10/17] xen: introduce xen_alloc/free_coherent_pages Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 11/17] swiotlb-xen: use xen_alloc/free_coherent_pages Stefano Stabellini
2013-10-09 20:48 ` Stefano Stabellini [this message]
2013-10-09 20:48 ` [PATCH v8 13/17] swiotlb-xen: use xen_dma_map/unmap_page, xen_dma_sync_single_for_cpu/device Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 14/17] ASoC: Samsung: Rename dma_ops by samsung_dma_ops Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 15/17] swiotlb: print a warning when the swiotlb is full Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 16/17] arm, arm64: do not always merge biovec if we are running on Xen Stefano Stabellini
2013-10-09 20:48 ` [PATCH v8 17/17] grant-table: call set_phys_to_machine after mapping grant refs Stefano Stabellini
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