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Commit 81e31dcb authored by Rajesh Kemisetti's avatar Rajesh Kemisetti Committed by Gerrit - the friendly Code Review server
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msm: kgsl: Check MMU type for memory and pagetable operations 



Check MMU type for below operations to make NOMMU functional:

- adreno_iommu_set_pt_ctx() tries to set pagetable during context
  switch without really checking on type of MMU.
- skip tracking of gpuaddr in case of NoMMU during
  kgsl_mem_entry_track_gpuaddr().
- In case of nommu the function kgsl_allocate_global() should
  always allocate contiguous memory from CMA.

Change-Id: I8cb59e1475376167c7a8a60c54df0939597f5083
Signed-off-by: default avatarRajesh Kemisetti <rajeshk@codeaurora.org>
parent b3691075

drivers/gpu/msm/adreno_iommu.c

+11 −0
Original line number Diff line number Diff line
@@ -856,6 +856,17 @@ int adreno_iommu_set_pt_ctx(struct adreno_ringbuffer *rb, 
	int result = 0;

	int cpu_path = 0;



	/* Just do the context switch incase of NOMMU */

	if (kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_NONE) {

		if ((!(flags & ADRENO_CONTEXT_SWITCH_FORCE_GPU)) &&

			adreno_isidle(device))

			_set_ctxt_cpu(rb, drawctxt);

		else

			result = _set_ctxt_gpu(rb, drawctxt);



		return result;

	}



	if (rb->drawctxt_active)

		cur_pt = rb->drawctxt_active->base.proc_priv->pagetable;

drivers/gpu/msm/kgsl.c

+3 −1
Original line number Diff line number Diff line
@@ -346,8 +346,10 @@ static int kgsl_mem_entry_track_gpuaddr(struct kgsl_device *device, 
	/*

	 * If SVM is enabled for this object then the address needs to be

	 * assigned elsewhere

	 * Also do not proceed further in case of NoMMU.

	 */

	if (kgsl_memdesc_use_cpu_map(&entry->memdesc))

	if (kgsl_memdesc_use_cpu_map(&entry->memdesc) ||

		(kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_NONE))

		return 0;



	pagetable = kgsl_memdesc_is_secured(&entry->memdesc) ?

drivers/gpu/msm/kgsl_sharedmem.h

+2 −1
Original line number Diff line number Diff line
@@ -268,7 +268,8 @@ static inline int kgsl_allocate_global(struct kgsl_device *device, 
	memdesc->flags = flags;

	memdesc->priv = priv;



	if ((memdesc->priv & KGSL_MEMDESC_CONTIG) != 0)

	if (((memdesc->priv & KGSL_MEMDESC_CONTIG) != 0) ||

		(kgsl_mmu_get_mmutype(device) == KGSL_MMU_TYPE_NONE))

		ret = kgsl_sharedmem_alloc_contig(device, memdesc,

						(size_t) size);

	else {