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, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
index bcad4437..e613e65f 100644
--- a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
@@ -1411,8 +1411,8 @@ int pmu_exec_gen_bl(struct gk20a *g, void *desc, u8 b_wait_for_halt)
                 /*TODO in code verify that enable PMU is done,
                         scrubbing etc is done*/
                 /*TODO in code verify that gmmu vm init is done*/
-                err = gk20a_gmmu_alloc_attr_sys(g,
-                                DMA_ATTR_READ_ONLY, bl_sz, &acr->hsbl_ucode);
+                err = gk20a_gmmu_alloc_flags_sys(g,
+                                NVGPU_DMA_READ_ONLY, bl_sz, &acr->hsbl_ucode);
                 if (err) {
                         gk20a_err(d, "failed to allocate memory\n");
                         goto err_done;