gpu: nvgpu: gv11b: recover from replay and ce mmu fault

Fix pte valid bit for replayable fault and ce fault

JIRA GPUT19X-12

Change-Id: I77a7a452d9b5b304f182e120e8d75959d46d4422
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1515538
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gv11b/ce_gv11b.c b/drivers/gpu/nvgpu/gv11b/ce_gv11b.c
index af87f990..9716c6d6 100644
--- a/drivers/gpu/nvgpu/gv11b/ce_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/ce_gv11b.c
@@ -75,14 +75,23 @@ static void gv11b_ce_isr(struct gk20a *g, u32 inst_id, u32 pri_base)
         gp10b_ce_isr(g, inst_id, pri_base);
 }
 
-void gv11b_ce_mthd_buffer_fault_in_bar2_fault(struct gk20a *g)
+u32 gv11b_ce_get_num_lce(struct gk20a *g)
 {
-        u32 reg_val, num_lce, lce, clear_intr;
+        u32 reg_val, num_lce;
 
         reg_val = gk20a_readl(g, top_num_ces_r());
         num_lce = top_num_ces_value_v(reg_val);
         nvgpu_log_info(g, "num LCE: %d", num_lce);
 
+        return num_lce;
+}
+
+void gv11b_ce_mthd_buffer_fault_in_bar2_fault(struct gk20a *g)
+{
+        u32 reg_val, num_lce, lce, clear_intr;
+
+        num_lce = gv11b_ce_get_num_lce(g);
+
         for (lce = 0; lce < num_lce; lce++) {
                 reg_val = gk20a_readl(g, ce_intr_status_r(lce));
                 if (reg_val & ce_intr_status_mthd_buffer_fault_pending_f()) {