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msm: kgsl: Enable "big page" memory allocations

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Allow users to specify "big page" mode when allocating GPU
memory. This will attempt to allocate contigious units of 64k
bytes per instead of the usual PAGE_SIZE units.  If the allocation
fails, then automatically fall back to allocate the rest of the
region with 4K pages. This means that potentially any allocation
could be comprised of a mixture of 64k chunks and 4k chunks.

Change-Id: Ib92c0c099d3b10ba54dbb864c5f977f8df4912f2
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
Signed-off-by: Rajeev Kulkarni <krajeev@codeaurora.org>
This commit is contained in:
Rajeev Kulkarni
2012-11-22 00:22:32 -08:00
committed by Stephen Boyd
parent 06ab48ada4
commit 8f8d09ec70
6 changed files with 148 additions and 55 deletions
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7
include/linux/msm_kgsl.h
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@@ -45,6 +45,13 @@
#define KGSL_MEMTYPE_MULTISAMPLE 20
#define KGSL_MEMTYPE_KERNEL 255
/*
* Alignment hint, passed as the power of 2 exponent.
* i.e 4k (2^12) would be 12, 64k (2^16)would be 16.
*/
#define KGSL_MEMALIGN_MASK 0x00FF0000
#define KGSL_MEMALIGN_SHIFT 16
/* generic flag values */
#define KGSL_FLAGS_NORMALMODE 0x00000000
#define KGSL_FLAGS_SAFEMODE 0x00000001