gpu: nvgpu: Hard code map_buffer_batch_limit

Add a hard coded #define for map_buffer_batch_limit and use that
insted of querying from GPU characteristics. Also add an
nvgpu_is_enabled() flag for disabling batch mapping, and set
map_buffer_batch_limit to zero if batch mapping is disabled.

JIRA NVGPU-388

Change-Id: Ic91feea638d0f47c5c22321886cfc75e97259dc3
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1593690
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index c753fd97..4a85ee71 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -368,7 +368,7 @@ int vgpu_init_gpu_characteristics(struct gk20a *g)
                 return err;
 
         g->gpu_characteristics.max_freq = priv->constants.max_freq;
-        g->gpu_characteristics.map_buffer_batch_limit = 0;
+        __nvgpu_set_enabled(g, NVGPU_SUPPORT_MAP_BUFFER_BATCH, false);
 
         /* features vgpu does not support */
         __nvgpu_set_enabled(g, NVGPU_SUPPORT_RESCHEDULE_RUNLIST, false);