gpu: nvgpu: abstract set mmu debug mode

Add new operaton g->ops.mm.set_debug_mode and let other places
that set debug mode call this callback.

It's preparing for adding vgpu set mmu debug mode hook.

JIRA VFND-1005
Bug 1594604

Change-Id: I1d227a0c0f96adb0035ae16ae1f4fbfa739bf0a7
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: http://git-master/r/833497
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vladislav Buzov <vbuzov@nvidia.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
index 3d75a631..9fdd860b 100644
--- a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
@@ -78,6 +78,31 @@ static bool gm20b_mm_mmu_debug_mode_enabled(struct gk20a *g)
                 gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_v();
 }
 
+static void gm20b_mm_mmu_set_debug_mode(struct gk20a *g, bool enable)
+{
+        u32 reg_val, fb_debug_ctrl, gpc_debug_ctrl;
+
+        if (enable) {
+                fb_debug_ctrl = fb_mmu_debug_ctrl_debug_enabled_f();
+                gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_f();
+                g->mmu_debug_ctrl = true;
+        } else {
+                fb_debug_ctrl = fb_mmu_debug_ctrl_debug_disabled_f();
+                gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_disabled_f();
+                g->mmu_debug_ctrl = false;
+        }
+
+        reg_val = gk20a_readl(g, fb_mmu_debug_ctrl_r());
+        reg_val = set_field(reg_val,
+                        fb_mmu_debug_ctrl_debug_m(), fb_debug_ctrl);
+        gk20a_writel(g, fb_mmu_debug_ctrl_r(), reg_val);
+
+        reg_val = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
+        reg_val = set_field(reg_val,
+                        gr_gpcs_pri_mmu_debug_ctrl_debug_m(), gpc_debug_ctrl);
+        gk20a_writel(g, gr_gpcs_pri_mmu_debug_ctrl_r(), reg_val);
+}
+
 static void gm20b_mm_set_big_page_size(struct gk20a *g,
                                 void *inst_ptr, int size)
 {
@@ -112,6 +137,7 @@ void gm20b_init_mm(struct gpu_ops *gops)
 {
         gops->mm.support_sparse = gm20b_mm_support_sparse;
         gops->mm.is_debug_mode_enabled = gm20b_mm_mmu_debug_mode_enabled;
+        gops->mm.set_debug_mode = gm20b_mm_mmu_set_debug_mode;
         gops->mm.gmmu_map = gk20a_locked_gmmu_map;
         gops->mm.gmmu_unmap = gk20a_locked_gmmu_unmap;
         gops->mm.vm_remove = gk20a_vm_remove_support;