gpu: nvgpu: Increase PBDMA timeout

PBDMA timeout can cause stale data in FIFO. Default value equals 1ms.
Increase it to max.

Bug 1537636

Change-Id: I1c6c6b10abaece3a64b77b9b3ef77ff726ff67cf
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/457047
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Allen Chang <allchang@nvidia.com>
Tested-by: Allen Chang <allchang@nvidia.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index 9fedb64b..e2b8a12e 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -423,6 +423,13 @@ int gk20a_init_fifo_reset_enable_hw(struct gk20a *g)
                         fifo_fb_timeout_period_max_f());
         gk20a_writel(g, fifo_fb_timeout_r(), timeout);
 
+        for (i = 0; i < pbdma_timeout__size_1_v(); i++) {
+                timeout = gk20a_readl(g, pbdma_timeout_r(i));
+                timeout = set_field(timeout, pbdma_timeout_period_m(),
+                                    pbdma_timeout_period_max_f());
+                gk20a_writel(g, pbdma_timeout_r(i), timeout);
+        }
+
         if (tegra_platform_is_silicon()) {
                 timeout = gk20a_readl(g, fifo_pb_timeout_r());
                 timeout &= ~fifo_pb_timeout_detection_enabled_f();
diff --git a/drivers/gpu/nvgpu/gk20a/hw_pbdma_gk20a.h b/drivers/gpu/nvgpu/gk20a/hw_pbdma_gk20a.h
index 0d749c20..e124e17f 100644
--- a/drivers/gpu/nvgpu/gk20a/hw_pbdma_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/hw_pbdma_gk20a.h
@@ -106,6 +106,22 @@ static inline u32 pbdma_gp_put_r(u32 i)
 {
         return 0x00040000 + i*8192;
 }
+static inline u32 pbdma_timeout_r(u32 i)
+{
+        return 0x0004012c + i*8192;
+}
+static inline u32 pbdma_timeout__size_1_v(void)
+{
+        return 0x00000001;
+}
+static inline u32 pbdma_timeout_period_m(void)
+{
+        return 0xffffffff << 0;
+}
+static inline u32 pbdma_timeout_period_max_f(void)
+{
+        return 0xffffffff;
+}
 static inline u32 pbdma_pb_fetch_r(u32 i)
 {
         return 0x00040054 + i*8192;