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Commit 263413a3 authored by Shrenuj Bansal's avatar Shrenuj Bansal
Browse files

msm: kgsl: Hardcode pt_base value instead of using PAGE_OFFSET 



The PAGE_OFFSET macro value provided by the kernel differs for
arm64 and is far beyond the range of GPU virtual addresses. Hence,
create a macro for the per process pt_base value which is
applicable to our code.

Change-Id: Ia60c8f4d26067faa26f305e6a5563f0bb7dc4962
Signed-off-by: default avatarShrenuj Bansal <shrenujb@codeaurora.org>
parent 2b979b24

drivers/gpu/msm/kgsl_iommu.c

+2 −3
Original line number Original line Diff line number Diff line
@@ -1391,9 +1391,8 @@ static int kgsl_iommu_init(struct kgsl_mmu *mmu) 
	 * we're better off with extra room.

	 * we're better off with extra room.

	 */

	 */

	if (mmu->pt_per_process) {

	if (mmu->pt_per_process) {

		mmu->pt_base = PAGE_OFFSET;

		mmu->pt_base = KGSL_PER_PROCESS_PT_BASE;

		mmu->pt_size = KGSL_IOMMU_GLOBAL_MEM_BASE

		mmu->pt_size = KGSL_PER_PROCESS_PT_SIZE;

				- kgsl_mmu_get_base_addr(mmu) - SZ_1M;

		mmu->use_cpu_map = true;

		mmu->use_cpu_map = true;

	} else {

	} else {

		mmu->pt_base = KGSL_PAGETABLE_BASE;

		mmu->pt_base = KGSL_PAGETABLE_BASE;

drivers/gpu/msm/kgsl_iommu.h

+3 −0
Original line number Original line Diff line number Diff line
@@ -17,6 +17,9 @@ 




/* Pagetable virtual base */

/* Pagetable virtual base */

#define KGSL_PAGETABLE_BASE     0x10000000

#define KGSL_PAGETABLE_BASE     0x10000000

#define KGSL_PER_PROCESS_PT_BASE	0xC0000000

#define KGSL_PER_PROCESS_PT_SIZE	(KGSL_IOMMU_GLOBAL_MEM_BASE -	\

					 KGSL_PER_PROCESS_PT_BASE - SZ_1M)





#define KGSL_IOMMU_CTX_OFFSET_V0	0

#define KGSL_IOMMU_CTX_OFFSET_V0	0

#define KGSL_IOMMU_CTX_OFFSET_V1	0x8000

#define KGSL_IOMMU_CTX_OFFSET_V1	0x8000