gpu: nvgpu: allocate blob space early

Allocting blob space for pmu might need fixed address
allocation in vidmem and during boot up

But if some page tables are allocated before blob space,
blob space allocation could fail

Fix this by allocating blob space early during boot up

Jira DNVGPU-20

Change-Id: I30eca1023c8f8f8be101bb7e160ba57a7040911a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1206402
(cherry picked from commit fad4309ce345ed3879f497bda27f2eceb1084dbb)
Reviewed-on: http://git-master/r/1210956
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 4872bb95..bcde1746 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -940,6 +940,16 @@ int gk20a_init_mm_setup_sw(struct gk20a *g)
         if (err)
                 return err;
 
+        /*
+         * this requires fixed allocations in vidmem which must be
+         * allocated before all other buffers
+         */
+        if (g->ops.pmu.alloc_blob_space && g->mm.vidmem_is_vidmem) {
+                err = g->ops.pmu.alloc_blob_space(g, 0, &g->acr.ucode_blob);
+                if (err)
+                        return err;
+        }
+
         err = gk20a_alloc_sysmem_flush(g);
         if (err)
                 return err;