gpu: nvgpu: Use timer API in gm20b code

Use the timer API instead of Linux specific APIs for handling
timeouts.

Also, lower the L2 timeout from 1 second (absurdly long) to 5ms.

Bug 1799159

Change-Id: I27dbc35b12e9bc22ff2207bb87543f76203e20f1
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1273825
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c b/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
index 2e568e83..4b87b877 100644
--- a/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/pmu_gm20b.c
@@ -22,6 +22,8 @@
 #include "acr_gm20b.h"
 #include "pmu_gm20b.h"
 
+#include <nvgpu/timers.h>
+
 #include <nvgpu/hw/gm20b/hw_gr_gm20b.h>
 #include <nvgpu/hw/gm20b/hw_pwr_gm20b.h>
 #include <nvgpu/hw/gm20b/hw_fuse_gm20b.h>
@@ -173,21 +175,24 @@ void pmu_handle_fecs_boot_acr_msg(struct gk20a *g, struct pmu_msg *msg,
         gk20a_dbg_fn("done");
 }
 
-static int pmu_gm20b_ctx_wait_lsf_ready(struct gk20a *g, u32 timeout, u32 val)
+static int pmu_gm20b_ctx_wait_lsf_ready(struct gk20a *g, u32 timeout_ms,
+                                        u32 val)
 {
-        unsigned long end_jiffies = jiffies + msecs_to_jiffies(timeout);
         unsigned long delay = GR_FECS_POLL_INTERVAL;
         u32 reg;
+        struct nvgpu_timeout timeout;
 
         gk20a_dbg_fn("");
         reg = gk20a_readl(g, gr_fecs_ctxsw_mailbox_r(0));
+
+        nvgpu_timeout_init(g, &timeout, (int)timeout_ms, NVGPU_TIMER_CPU_TIMER);
+
         do {
                 reg = gk20a_readl(g, gr_fecs_ctxsw_mailbox_r(0));
                 if (reg == val)
                         return 0;
                 udelay(delay);
-        } while (time_before(jiffies, end_jiffies) ||
-                        !tegra_platform_is_silicon());
+        } while (!nvgpu_timeout_expired(&timeout));
 
         return -ETIMEDOUT;
 }