gpu: nvgpu: add placeholder for IPA to PA

Add __nvgpu_sgl_phys function that can be used to implement IPA
to PA translation in a subsequent change.
Adapt existing function prototypes to add pointer to gpu context,
as we will need to check if IPA to PA translation is needed.

JIRA EVLR-2442
Bug 200392719

Change-Id: I5a734c958c8277d1bf673c020dafb31263f142d6
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1673142
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/nvgpu_mem.c b/drivers/gpu/nvgpu/common/linux/nvgpu_mem.c
index d4549e1b..63a14f40 100644
--- a/drivers/gpu/nvgpu/common/linux/nvgpu_mem.c
+++ b/drivers/gpu/nvgpu/common/linux/nvgpu_mem.c
@@ -34,6 +34,11 @@
 #include "gk20a/gk20a.h"
 #include "gk20a/mm_gk20a.h"
 
+static inline u64 __nvgpu_sgl_phys(struct gk20a *g, struct nvgpu_sgl *sgl)
+{
+        return sg_phys((struct scatterlist *)sgl);
+}
+
 int nvgpu_mem_begin(struct gk20a *g, struct nvgpu_mem *mem)
 {
         void *cpu_va;
@@ -309,10 +314,12 @@ u64 nvgpu_mem_get_addr_sgl(struct gk20a *g, struct scatterlist *sgl)
 {
         if (nvgpu_is_enabled(g, NVGPU_MM_USE_PHYSICAL_SG) ||
             !nvgpu_iommuable(g))
-                return g->ops.mm.gpu_phys_addr(g, NULL, sg_phys(sgl));
+                return g->ops.mm.gpu_phys_addr(g, NULL,
+                        __nvgpu_sgl_phys(g, (struct nvgpu_sgl *)sgl));
 
         if (sg_dma_address(sgl) == 0)
-                return g->ops.mm.gpu_phys_addr(g, NULL, sg_phys(sgl));
+                return g->ops.mm.gpu_phys_addr(g, NULL,
+                        __nvgpu_sgl_phys(g, (struct nvgpu_sgl *)sgl));
 
         if (sg_dma_address(sgl) == DMA_ERROR_CODE)
                 return 0;
@@ -376,7 +383,7 @@ u64 nvgpu_mem_get_phys_addr(struct gk20a *g, struct nvgpu_mem *mem)
         if (mem->aperture == APERTURE_VIDMEM)
                 return nvgpu_mem_get_addr(g, mem);
 
-        return sg_phys(mem->priv.sgt->sgl);
+        return __nvgpu_sgl_phys(g, (struct nvgpu_sgl *)mem->priv.sgt->sgl);
 }
 
 /*
@@ -501,9 +508,9 @@ static struct nvgpu_sgl *nvgpu_mem_linux_sgl_next(struct nvgpu_sgl *sgl)
         return (struct nvgpu_sgl *)sg_next((struct scatterlist *)sgl);
 }
 
-static u64 nvgpu_mem_linux_sgl_phys(struct nvgpu_sgl *sgl)
+static u64 nvgpu_mem_linux_sgl_phys(struct gk20a *g, struct nvgpu_sgl *sgl)
 {
-        return (u64)sg_phys((struct scatterlist *)sgl);
+        return (u64)__nvgpu_sgl_phys(g, sgl);
 }
 
 static u64 nvgpu_mem_linux_sgl_dma(struct nvgpu_sgl *sgl)
@@ -522,7 +529,7 @@ static u64 nvgpu_mem_linux_sgl_gpu_addr(struct gk20a *g,
 {
         if (sg_dma_address((struct scatterlist *)sgl) == 0)
                 return g->ops.mm.gpu_phys_addr(g, attrs,
-                        sg_phys((struct scatterlist *)sgl));
+                                __nvgpu_sgl_phys(g, sgl));
 
         if (sg_dma_address((struct scatterlist *)sgl) == DMA_ERROR_CODE)
                 return 0;