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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 18:15:15 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-01 18:15:15 +0100
commitac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9 (patch)
tree816e5ac643b15c2050c64a7075f0f7e13d86ea09 /arch/arm/mm/proc-arm1022.S
parentMerge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block (diff)
parentMerge branches 'clks' and 'pnx' into devel (diff)
downloadlinux-ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9.tar.xz
linux-ac0f6f927db539e03e1f3f61bcd4ed57d5cde7a9.zip
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: (100 commits) ARM: Eliminate decompressor -Dstatic= PIC hack ARM: 5958/1: ARM: U300: fix inverted clk round rate ARM: 5956/1: misplaced parentheses ARM: 5955/1: ep93xx: move timer defines into core.c and document ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c ARM: 5953/1: ep93xx: fix broken build of clock.c ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig ARM: 5949/1: NUC900 add gpio virtual memory map ARM: 5948/1: Enable timer0 to time4 clock support for nuc910 ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk ARM: make_coherent(): fix problems with highpte, part 2 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself ARM: 5945/1: ep93xx: include correct irq.h in core.c ARM: 5933/1: amba-pl011: support hardware flow control ARM: 5930/1: Add PKMAP area description to memory.txt. ARM: 5929/1: Add checks to detect overlap of memory regions. ARM: 5928/1: Change type of VMALLOC_END to unsigned long. ARM: 5927/1: Make delimiters of DMA area globally visibly. ARM: 5926/1: Add "Virtual kernel memory..." printout. ARM: 5920/1: OMAP4: Enable L2 Cache ... Fix up trivial conflict in arch/arm/mach-mx25/clock.c
Diffstat (limited to 'arch/arm/mm/proc-arm1022.S')
-rw-r--r--arch/arm/mm/proc-arm1022.S32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S
index 20a5b1b31a70..ce13e4a827de 100644
--- a/arch/arm/mm/proc-arm1022.S
+++ b/arch/arm/mm/proc-arm1022.S
@@ -247,7 +247,7 @@ ENTRY(arm1022_flush_kern_dcache_area)
*
* (same as v4wb)
*/
-ENTRY(arm1022_dma_inv_range)
+arm1022_dma_inv_range:
mov ip, #0
#ifndef CONFIG_CPU_DCACHE_DISABLE
tst r0, #CACHE_DLINESIZE - 1
@@ -273,7 +273,7 @@ ENTRY(arm1022_dma_inv_range)
*
* (same as v4wb)
*/
-ENTRY(arm1022_dma_clean_range)
+arm1022_dma_clean_range:
mov ip, #0
#ifndef CONFIG_CPU_DCACHE_DISABLE
bic r0, r0, #CACHE_DLINESIZE - 1
@@ -305,6 +305,30 @@ ENTRY(arm1022_dma_flush_range)
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm1022_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq arm1022_dma_clean_range
+ bcs arm1022_dma_inv_range
+ b arm1022_dma_flush_range
+ENDPROC(arm1022_dma_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(arm1022_dma_unmap_area)
+ mov pc, lr
+ENDPROC(arm1022_dma_unmap_area)
+
ENTRY(arm1022_cache_fns)
.long arm1022_flush_kern_cache_all
.long arm1022_flush_user_cache_all
@@ -312,8 +336,8 @@ ENTRY(arm1022_cache_fns)
.long arm1022_coherent_kern_range
.long arm1022_coherent_user_range
.long arm1022_flush_kern_dcache_area
- .long arm1022_dma_inv_range
- .long arm1022_dma_clean_range
+ .long arm1022_dma_map_area
+ .long arm1022_dma_unmap_area
.long arm1022_dma_flush_range
.align 5