gpu: nvgpu: abstract away dma alloc attrs

Don't use enum dma_attr in the gk20a_gmmu_alloc_attr* functions, but
define nvgpu-internal flags for no kernel mapping, force contiguous, and
read only modes. Store the flags in the allocated struct mem_desc and
only use gk20a_gmmu_free, remove gk20a_gmmu_free_attr. This helps in OS
abstraction. Rename the notion of attr to flags.

Add implicit NVGPU_DMA_NO_KERNEL_MAPPING to all vidmem buffers
allocated via gk20a_gmmu_alloc_vid for consistency.

Fix a bug in gk20a_gmmu_alloc_map_attr that dropped the attr
parameter accidentally.

Bug 1853519

Change-Id: I1ff67dff9fc425457ae445ce4976a780eb4dcc9f
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1321101
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gp106/acr_gp106.c b/drivers/gpu/nvgpu/gp106/acr_gp106.c
index f5228136..afb9ebe2 100644
--- a/drivers/gpu/nvgpu/gp106/acr_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/acr_gp106.c
@@ -109,12 +109,14 @@ static int gp106_alloc_blob_space(struct gk20a *g,
          * Even though this mem_desc wouldn't be used, the wpr region needs to
          * be reserved in the allocator.
          */
-        err = gk20a_gmmu_alloc_attr_vid_at(g, 0, wpr_inf.size,
-                                &g->acr.wpr_dummy, wpr_inf.wpr_base);
+        err = gk20a_gmmu_alloc_flags_vid_at(g,
+                        NVGPU_DMA_NO_KERNEL_MAPPING, wpr_inf.size,
+                        &g->acr.wpr_dummy, wpr_inf.wpr_base);
         if (err)
                 return err;
 
-        return gk20a_gmmu_alloc_attr_vid_at(g, 0, wpr_inf.size, mem,
+        return gk20a_gmmu_alloc_flags_vid_at(g,
+                        NVGPU_DMA_NO_KERNEL_MAPPING, wpr_inf.size, mem,
                         wpr_inf.nonwpr_base);
 }