gpu: nvgpu: initialize gr->max_comptag_mem in linux

We initialize gr->max_comptag_mem in common code and with a global variable
declared in <linux/mm.h>

Move this linux specific dependency to linux specific files i.e.
initialize gr->max_comptag_mem during linux specific probe functions

Jira NVGPU-414

Change-Id: I9415938bf1288b24950ba7ecc71abee3162dae64
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1606195
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/driver_common.c b/drivers/gpu/nvgpu/common/linux/driver_common.c
index 45b53d88..1d1e5371 100644
--- a/drivers/gpu/nvgpu/common/linux/driver_common.c
+++ b/drivers/gpu/nvgpu/common/linux/driver_common.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/dma-mapping.h>
+#include <linux/mm.h>
 #include <uapi/linux/nvgpu.h>
 
 #include <nvgpu/kmem.h>
@@ -43,7 +44,6 @@ static void nvgpu_init_vars(struct gk20a *g)
 
         nvgpu_cond_init(&l->sw_irq_stall_last_handled_wq);
         nvgpu_cond_init(&l->sw_irq_nonstall_last_handled_wq);
-        gk20a_init_gr(g);
 
         init_rwsem(&l->busy_lock);
         nvgpu_rwsem_init(&g->deterministic_busy);
@@ -74,6 +74,15 @@ static void nvgpu_init_vars(struct gk20a *g)
         nvgpu_init_list_node(&g->boardobjgrp_head);
 }
 
+static void nvgpu_init_gr_vars(struct gk20a *g)
+{
+        gk20a_init_gr(g);
+
+        gk20a_dbg_info("total ram pages : %lu", totalram_pages);
+        g->gr.max_comptag_mem = totalram_pages
+                                 >> (10 - (PAGE_SHIFT - 10));
+}
+
 static void nvgpu_init_timeout(struct gk20a *g)
 {
         struct gk20a_platform *platform = dev_get_drvdata(dev_from_gk20a(g));
@@ -187,6 +196,7 @@ int nvgpu_probe(struct gk20a *g,
         int err = 0;
 
         nvgpu_init_vars(g);
+        nvgpu_init_gr_vars(g);
         nvgpu_init_timeout(g);
         nvgpu_init_timeslice(g);
         nvgpu_init_pm_vars(g);