gpu: nvgpu: ModeE perfbuffer feature development

perfbuf mapping fixes:
- Allocate VM specifically for perfbuf use: using the PMU's
  results in mmu faults for larger buffers where 64k pages are used.
- Make 4GB boundary check work for large address spaces
- remove requirement to have allow_all flag set
- track perfbuf ownership and clean up appropriately

Bug 1880196
JIRA EVLR-1074

Change-Id: Ieee4eb17b64acf9b6ede37bf8e6a91892cda4a7e
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: http://git-master/r/1460809
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index dfdaa164..7fac811e 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -363,6 +363,11 @@ struct mm_gk20a {
 
         struct {
                 struct vm_gk20a vm;
+                struct nvgpu_mem inst_block;
+        } perfbuf;
+
+        struct {
+                struct vm_gk20a vm;
         } cde;
 
         struct {