The patch titled
frv: provide dma_map_page() for NOMMU and fix comments
has been added to the -mm tree. Its filename is
frv-provide-dma_map_page-for-nommu-and-fix-comments.patch
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------------------------------------------------------
Subject: frv: provide dma_map_page() for NOMMU and fix comments
From: David Howells <dhowells@xxxxxxxxxx>
Provide dma_map_page() for the NOMMU-mode FRV arch.
Also do some fixing on the comments attached to the various DMA functions
for both MMU and NOMMU mode FRV code.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/frv/mb93090-mb00/pci-dma-nommu.c | 23 ++++++++++++++++++++---
arch/frv/mb93090-mb00/pci-dma.c | 11 +++++++++--
2 files changed, 29 insertions(+), 5 deletions(-)
diff -puN arch/frv/mb93090-mb00/pci-dma-nommu.c~frv-provide-dma_map_page-for-nommu-and-fix-comments arch/frv/mb93090-mb00/pci-dma-nommu.c
--- a/arch/frv/mb93090-mb00/pci-dma-nommu.c~frv-provide-dma_map_page-for-nommu-and-fix-comments
+++ a/arch/frv/mb93090-mb00/pci-dma-nommu.c
@@ -111,7 +111,7 @@ EXPORT_SYMBOL(dma_free_coherent);
* The 32-bit bus address to use is returned.
*
* Once the device is given the dma address, the device owns this memory
- * until either pci_unmap_single or pci_dma_sync_single is performed.
+ * until either dma_unmap_single or pci_dma_sync_single is performed.
*/
dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
enum dma_data_direction direction)
@@ -129,7 +129,7 @@ EXPORT_SYMBOL(dma_map_single);
/*
* Map a set of buffers described by scatterlist in streaming
* mode for DMA. This is the scather-gather version of the
- * above pci_map_single interface. Here the scatter gather list
+ * above dma_map_single interface. Here the scatter gather list
* elements are each tagged with the appropriate dma address
* and length. They are obtained via sg_dma_{address,length}(SG).
*
@@ -139,7 +139,7 @@ EXPORT_SYMBOL(dma_map_single);
* The routine returns the number of addr/length pairs actually
* used, at most nents.
*
- * Device ownership issues as mentioned above for pci_map_single are
+ * Device ownership issues as mentioned above for dma_map_single are
* the same here.
*/
int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
@@ -158,3 +158,20 @@ int dma_map_sg(struct device *dev, struc
}
EXPORT_SYMBOL(dma_map_sg);
+
+/*
+ * Map a single page of the indicated size for DMA in streaming mode.
+ * The 32-bit bus address to use is returned.
+ *
+ * Device ownership issues as mentioned above for dma_map_single are
+ * the same here.
+ */
+dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
+ size_t size, enum dma_data_direction direction)
+{
+ BUG_ON(direction == DMA_NONE);
+ flush_dcache_page(page);
+ return (dma_addr_t) page_to_phys(page) + offset;
+}
+
+EXPORT_SYMBOL(dma_map_page);
diff -puN arch/frv/mb93090-mb00/pci-dma.c~frv-provide-dma_map_page-for-nommu-and-fix-comments arch/frv/mb93090-mb00/pci-dma.c
--- a/arch/frv/mb93090-mb00/pci-dma.c~frv-provide-dma_map_page-for-nommu-and-fix-comments
+++ a/arch/frv/mb93090-mb00/pci-dma.c
@@ -61,7 +61,7 @@ EXPORT_SYMBOL(dma_map_single);
/*
* Map a set of buffers described by scatterlist in streaming
* mode for DMA. This is the scather-gather version of the
- * above pci_map_single interface. Here the scatter gather list
+ * above dma_map_single interface. Here the scatter gather list
* elements are each tagged with the appropriate dma address
* and length. They are obtained via sg_dma_{address,length}(SG).
*
@@ -71,7 +71,7 @@ EXPORT_SYMBOL(dma_map_single);
* The routine returns the number of addr/length pairs actually
* used, at most nents.
*
- * Device ownership issues as mentioned above for pci_map_single are
+ * Device ownership issues as mentioned above for dma_map_single are
* the same here.
*/
int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
@@ -105,6 +105,13 @@ int dma_map_sg(struct device *dev, struc
EXPORT_SYMBOL(dma_map_sg);
+/*
+ * Map a single page of the indicated size for DMA in streaming mode.
+ * The 32-bit bus address to use is returned.
+ *
+ * Device ownership issues as mentioned above for dma_map_single are
+ * the same here.
+ */
dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction)
{
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
origin.patch
uclinux-fix-gzip-header-parsing-in-binfmt_flatc.patch
binfmt_elf_fdpic-support-auxvec-base-platform-string.patch
binfmt_elf_fdpic-convert-initial-stack-alignment-to-arch_align_stack.patch
binfmt_elf_fdpic-wire-up-at_execfd-at_execfn-at_secure.patch
sysctl-simplify-strategy.patch
afs-convert-to-new-aops.patch
frv-provide-dma_map_page-for-nommu-and-fix-comments.patch
frv-switch-unaligned-access-to-the-packed-struct-implementation.patch
mn10300-use-bcd2bin-bin2bcd.patch
mutex-subsystem-synchro-test-module.patch
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