gpu: nvgpu: implement mapping for sparse allocation

Implement support for partial buffer mappings.

Whitelist gr_pri_bes_crop_hww_esr accessed by
fec during sparse texture initialization.

bug 1456562
bug 1369014
bug 1361532

Change-Id: Ib0d1ec6438257ac14b40c8466b37856b67e7e34d
Signed-off-by: Kirill Artamonov <kartamonov@nvidia.com>
Reviewed-on: http://git-master/r/375012
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 12 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/as_gk20a.c b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
index 42fa2167..4849dbd5 100644
--- a/drivers/gpu/nvgpu/gk20a/as_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
@@ -135,19 +135,14 @@ static int gk20a_as_ioctl_map_buffer_ex(
                 struct gk20a_as_share *as_share,
                 struct nvhost_as_map_buffer_ex_args *args)
 {
-        int i;
-
         gk20a_dbg_fn("");
 
-        /* ensure that padding is not set. this is required for ensuring that
-         * we can safely use these fields later */
-        for (i = 0; i < ARRAY_SIZE(args->padding); i++)
-                if (args->padding[i])
-                        return -EINVAL;
-
         return gk20a_vm_map_buffer(as_share, args->dmabuf_fd,
-                                   &args->offset, args->flags,
-                                   args->kind);
+                                   &args->as_offset, args->flags,
+                                   args->kind,
+                                   args->buffer_offset,
+                                   args->mapping_size
+                                   );
 }
 
 static int gk20a_as_ioctl_map_buffer(
@@ -156,8 +151,9 @@ static int gk20a_as_ioctl_map_buffer(
 {
         gk20a_dbg_fn("");
         return gk20a_vm_map_buffer(as_share, args->nvmap_handle,
-                                   &args->o_a.align,
-                                   args->flags, NV_KIND_DEFAULT);
+                                   &args->o_a.offset,
+                                   args->flags, NV_KIND_DEFAULT,
+                                   0, 0);
         /* args->o_a.offset will be set if !err */
 }