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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-xscale.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-xscale.S')
-rw-r--r--arch/arm/mm/proc-xscale.S49
1 files changed, 43 insertions, 6 deletions
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index 93df47265f2d..63037e2162f2 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -315,7 +315,7 @@ ENTRY(xscale_flush_kern_dcache_area)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xscale_dma_inv_range)
+xscale_dma_inv_range:
tst r0, #CACHELINESIZE - 1
bic r0, r0, #CACHELINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
@@ -336,7 +336,7 @@ ENTRY(xscale_dma_inv_range)
* - start - virtual start address
* - end - virtual end address
*/
-ENTRY(xscale_dma_clean_range)
+xscale_dma_clean_range:
bic r0, r0, #CACHELINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHELINESIZE
@@ -363,6 +363,43 @@ ENTRY(xscale_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer
mov pc, lr
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_map_area)
+ add r1, r1, r0
+ cmp r2, #DMA_TO_DEVICE
+ beq xscale_dma_clean_range
+ bcs xscale_dma_inv_range
+ b xscale_dma_flush_range
+ENDPROC(xscale_dma_map_area)
+
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_a0_map_area)
+ add r1, r1, r0
+ teq r2, #DMA_TO_DEVICE
+ beq xscale_dma_clean_range
+ b xscale_dma_flush_range
+ENDPROC(xscsale_dma_a0_map_area)
+
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(xscale_dma_unmap_area)
+ mov pc, lr
+ENDPROC(xscale_dma_unmap_area)
+
ENTRY(xscale_cache_fns)
.long xscale_flush_kern_cache_all
.long xscale_flush_user_cache_all
@@ -370,8 +407,8 @@ ENTRY(xscale_cache_fns)
.long xscale_coherent_kern_range
.long xscale_coherent_user_range
.long xscale_flush_kern_dcache_area
- .long xscale_dma_inv_range
- .long xscale_dma_clean_range
+ .long xscale_dma_map_area
+ .long xscale_dma_unmap_area
.long xscale_dma_flush_range
/*
@@ -394,8 +431,8 @@ ENTRY(xscale_80200_A0_A1_cache_fns)
.long xscale_coherent_kern_range
.long xscale_coherent_user_range
.long xscale_flush_kern_dcache_area
- .long xscale_dma_flush_range
- .long xscale_dma_clean_range
+ .long xscale_dma_a0_map_area
+ .long xscale_dma_unmap_area
.long xscale_dma_flush_range
ENTRY(cpu_xscale_dcache_clean_area)