gpu: nvgpu: Implement common allocator and mem_desc

Introduce mem_desc, which holds all information needed for a buffer.
Implement helper functions for allocation and freeing that use this
data type.

Change-Id: I82c88595d058d4fb8c5c5fbf19d13269e48e422f
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/712699

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
index 4ff1398a..dd320ae1 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
@@ -32,7 +32,7 @@ struct fifo_runlist_info_gk20a {
         unsigned long *active_channels;
         unsigned long *active_tsgs;
         /* Each engine has its own SW and HW runlist buffer.*/
-        struct runlist_mem_desc mem[MAX_RUNLIST_BUFFERS];
+        struct mem_desc mem[MAX_RUNLIST_BUFFERS];
         u32  cur_buffer;
         u32  total_entries;
         bool stopped;
@@ -102,9 +102,8 @@ struct fifo_gk20a {
         struct fifo_runlist_info_gk20a *runlist_info;
         u32 max_runlists;
 
-        struct userd_desc userd;
+        struct mem_desc userd;
         u32 userd_entry_size;
-        u32 userd_total_size;
 
         struct channel_gk20a *channel;
         struct mutex ch_inuse_mutex; /* protect unused chid look up */