gpu: nvgpu: Get rid of legacy gpfifo type

Get rid of the duplicate gpfifo struct to emphasize the fact that
nvgpu_gpfifo is the only memory layout for gpfifo entries that works.
This is the same layout that HW uses.

Also, add a local pointer to the gpfifo memory in
gk20a_submit_channel_gpfifo to get rid of repeated typecasts.

Bug 1592391
Bug 1550886

Change-Id: I5432859ef8e7c1aab5907e44098994d7bb807f50
Signed-off-by: Janne Hellsten <jhellsten@nvidia.com>
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/677341
(cherry picked from commit 724c8c6228af81dd440e825bddf545dd6b2b8bd7)
Reviewed-on: http://git-master/r/822548
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 794d8228..29697b9f 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -38,11 +38,6 @@ struct gk20a_fence;
 #include "gr_gk20a.h"
 #include "fence_gk20a.h"
 
-struct gpfifo {
-        u32 entry0;
-        u32 entry1;
-};
-
 struct notification {
         struct {
                 u32 nanoseconds[2];