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Marek Szyprowski 593f473554 ARM: dma-mapping: fix buffer chunk allocation order 
IOMMU-aware dma_alloc_attrs() implementation allocates buffers in
power-of-two chunks to improve performance and take advantage of large
page mappings provided by some IOMMU hardware. However current code, due
to a subtle bug, allocated those chunks in the smallest-to-largest
order, what completely killed all the advantages of using larger than
page chunks. If a 4KiB chunk has been mapped as a first chunk, the
consecutive chunks are not aligned correctly to the power-of-two which
match their size and IOMMU drivers were not able to use internal
mappings of size other than the 4KiB (largest common denominator of
alignment and chunk size).

This patch fixes this issue by changing to the correct largest-to-smallest
chunk size allocation sequence.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2012-06-25 10:18:52 +02:00
..
abort-ev4.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
abort-ev4t.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
abort-ev5t.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
abort-ev5tj.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
abort-ev6.S ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores 2012-04-23 14:21:52 +01:00
abort-ev7.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
abort-lv4t.S ARM: entry: data abort: ensure r5 is preserved by abort functions 2011-07-02 10:56:12 +01:00
abort-macro.S ARM: 7088/1: entry: fix wrong parameter name used in do_thumb_abort 2011-09-10 23:39:56 +01:00
abort-nommu.S ARM: entry: data abort: tail-call the main data abort handler 2011-07-02 10:56:11 +01:00
alignment.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
cache-fa.S ARM: mm: cache-fa: Use the new processor struct macros 2011-07-07 15:31:05 +01:00
cache-feroceon-l2.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
cache-l2x0.c ARM: 7398/1: l2x0: only write to debug registers on PL310 2012-04-23 14:21:52 +01:00
cache-tauros2.c ARM: cache: tauros2: add disable and resume callback 2012-05-07 11:43:48 +08:00
cache-v3.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4wb.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v4wt.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v6.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-v7.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
cache-xsc3l2.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
context.c ARM: Remove current_mm per-cpu variable 2012-04-17 15:29:37 +01:00
copypage-fa.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-feroceon.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v4mc.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
copypage-v4wb.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v4wt.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-v6.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
copypage-xsc3.c arm: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
copypage-xscale.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
dma-mapping.c ARM: dma-mapping: fix buffer chunk allocation order 2012-06-25 10:18:52 +02:00
extable.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
fault-armv.c arm: remove several unnecessary module.h include instances 2011-10-31 19:30:48 -04:00
fault.c Merge branch 'v3-removal' into for-linus 2012-05-21 15:15:33 +01:00
fault.h ARM: LPAE: Add fault handling support 2011-12-08 10:30:40 +00:00
flush.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
fsr-2level.c ARM: LPAE: Move the FSR definitions to separate files 2011-12-08 10:30:37 +00:00
fsr-3level.c ARM: LPAE: Add fault handling support 2011-12-08 10:30:40 +00:00
highmem.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-03-29 16:53:48 -07:00
idmap.c Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
init.c ARM: mm: fix type of the arm_dma_limit global variable 2012-06-11 14:30:47 +02:00
iomap.c arm/PCI: remove arch pci_flags definition 2012-02-23 20:18:56 -07:00
ioremap.c ARM: cleanups of io includes 2012-03-29 18:02:10 -07:00
Kconfig ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs 2012-05-05 05:50:50 +01:00
Makefile ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs 2012-05-05 05:50:50 +01:00
mm.h ARM: mm: fix type of the arm_dma_limit global variable 2012-06-11 14:30:47 +02:00
mmap.c ARM: 7169/1: topdown mmap support 2011-12-06 11:15:25 +00:00
mmu.c ARM: integrate CMA with DMA-mapping subsystem 2012-05-21 15:09:38 +02:00
nommu.c ARM: 7383/1: nommu: populate vectors page from paging_init 2012-04-13 14:05:42 +01:00
pabort-legacy.S ARM: entry: prefetch abort: tail-call the main prefetch abort handler 2011-07-02 10:56:10 +01:00
pabort-v6.S ARM: entry: prefetch abort: tail-call the main prefetch abort handler 2011-07-02 10:56:10 +01:00
pabort-v7.S ARM: entry: prefetch abort: tail-call the main prefetch abort handler 2011-07-02 10:56:10 +01:00
pgd.c ARM: move CP15 definitions to separate header file 2012-03-28 18:30:01 +01:00
proc-arm7tdmi.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-arm9tdmi.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-arm720.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-arm740.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-arm920.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm922.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm925.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm926.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm940.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm946.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1020.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1020e.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1022.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-arm1026.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-fa526.S Disintegrate asm/system.h for ARM 2012-03-28 18:30:01 +01:00
proc-feroceon.S ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails 2012-05-02 11:12:49 +01:00
proc-macros.S ARM: LPAE: MMU setup for the 3-level page table format 2011-12-08 10:30:39 +00:00
proc-mohawk.S arm-soc: power management changes 2012-05-22 09:41:01 -07:00
proc-sa110.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-sa1100.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-syms.c ARM: add size argument to __cpuc_flush_dcache_page 2009-12-14 14:53:22 +00:00
proc-v6.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-v7-2level.S ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on ASID-capable CPUs 2012-04-17 15:29:32 +01:00
proc-v7-3level.S ARM: LPAE: MMU setup for the 3-level page table format 2011-12-08 10:30:39 +00:00
proc-v7.S ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE 2012-04-15 22:00:31 +01:00
proc-xsc3.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
proc-xscale.S ARM: proc-*.S: place cpu_reset functions into .idmap.text section 2011-12-06 14:04:14 +00:00
tlb-fa.S Merge branch 'devel-stable' into for-next 2011-07-22 23:09:07 +01:00
tlb-v4.S ARM: mm: tlb-v4: Use the new processor struct macros 2011-07-07 15:31:12 +01:00
tlb-v4wb.S ARM: mm: tlb-v4wb: Use the new processor struct macros 2011-07-07 15:31:12 +01:00
tlb-v4wbi.S ARM: mm: tlb-v4wbi: Use the new processor struct macros 2011-07-07 15:31:12 +01:00
tlb-v6.S Merge branch 'devel-stable' into for-next 2011-07-22 23:09:07 +01:00
tlb-v7.S Merge branch 'devel-stable' into for-next 2011-07-22 23:09:07 +01:00
vmregion.c ARM: add dma coherent region reporting via procfs 2012-01-23 10:23:57 +00:00
vmregion.h ARM: dma-mapping: add support for IOMMU mapper 2012-05-21 15:06:23 +02:00