summaryrefslogtreecommitdiffstats
path: root/arch/arm/include/asm/scatterlist.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-03 10:39:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-03 10:39:02 -0700
commit7e31aa11fc672bbe0dd0da59513c9efe3809ced7 (patch)
tree0aafe6a0045230950ce6b26579a053da12614a49 /arch/arm/include/asm/scatterlist.h
parent071f4924844c435a3ae0cdbab7d7df2f1da85713 (diff)
parent9cb7117fa4858468014f76bd996076985111e955 (diff)
downloadop-kernel-dev-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.zip
op-kernel-dev-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.tar.gz
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5182/1: pxa: Fix pcm990 compilation [ARM] Fix explicit asm(-arm)?/arch-foo references [ARM] move include/asm-arm to arch/arm/include/asm [ARM] Remove explicit dependency for misc.o from compressed/Makefile [ARM] initrd: claim initrd memory exclusively [ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2) [ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout [ARM] add Sascha Hauer as Freescale i.MX Maintainer [ARM] i.MX: add missing clock functions exports [ARM] i.MX: remove set_imx_fb_info() export [ARM] mx1ads: make mmc platform data available for modules [ARM] mx2: add missing Kconfig dependency
Diffstat (limited to 'arch/arm/include/asm/scatterlist.h')
-rw-r--r--arch/arm/include/asm/scatterlist.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h
new file mode 100644
index 0000000..ca0a37d
--- /dev/null
+++ b/arch/arm/include/asm/scatterlist.h
@@ -0,0 +1,27 @@
+#ifndef _ASMARM_SCATTERLIST_H
+#define _ASMARM_SCATTERLIST_H
+
+#include <asm/memory.h>
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+ unsigned long sg_magic;
+#endif
+ unsigned long page_link;
+ unsigned int offset; /* buffer offset */
+ dma_addr_t dma_address; /* dma address */
+ unsigned int length; /* length */
+};
+
+/*
+ * These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg) ((sg)->dma_address)
+#define sg_dma_len(sg) ((sg)->length)
+
+#endif /* _ASMARM_SCATTERLIST_H */
OpenPOWER on IntegriCloud