gpu: nvgpu: Carveout support for the page allocator

Implement carveout support by just calling through to the buddy
allocator's carveout support.

Jira DNVGPU-84

Change-Id: I1940873394a4cbff0152f1b6c9c4fd659e0076e1
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1203392
(cherry picked from commit 499ee0407bf525e161a14cfb8bbbc101ac934329)
Reviewed-on: http://git-master/r/1223454
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
index 07e3d823..42eb9a14 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
@@ -57,6 +57,22 @@ static u64 gk20a_page_alloc_end(struct gk20a_allocator *a)
         return gk20a_alloc_end(&va->source_allocator);
 }
 
+static int gk20a_page_reserve_co(struct gk20a_allocator *a,
+                                 struct gk20a_alloc_carveout *co)
+{
+        struct gk20a_page_allocator *va = a->priv;
+
+        return gk20a_alloc_reserve_carveout(&va->source_allocator, co);
+}
+
+static void gk20a_page_release_co(struct gk20a_allocator *a,
+                                  struct gk20a_alloc_carveout *co)
+{
+        struct gk20a_page_allocator *va = a->priv;
+
+        gk20a_alloc_release_carveout(&va->source_allocator, co);
+}
+
 static int __insert_page_alloc(struct gk20a_page_allocator *a,
                                struct gk20a_page_alloc *alloc)
 {
@@ -469,6 +485,9 @@ static const struct gk20a_allocator_ops page_ops = {
         .alloc_fixed    = gk20a_page_alloc_fixed,
         .free_fixed     = gk20a_page_free_fixed,
 
+        .reserve_carveout       = gk20a_page_reserve_co,
+        .release_carveout       = gk20a_page_release_co,
+
         .base           = gk20a_page_alloc_base,
         .length         = gk20a_page_alloc_length,
         .end            = gk20a_page_alloc_end,