1 files changed, 19 insertions, 126 deletions

diff --git a/drivers/gpu/nvgpu/gp106/pmu_gp106.c b/drivers/gpu/nvgpu/gp106/pmu_gp106.c
index 88d68220..56f1e194 100644
--- a/drivers/gpu/nvgpu/gp106/pmu_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/pmu_gp106.c
@@ -32,151 +32,43 @@
 #include <nvgpu/hw/gp106/hw_mc_gp106.h>
 #include <nvgpu/hw/gp106/hw_pwr_gp106.h>
 
-#define PMU_MEM_SCRUBBING_TIMEOUT_MAX 1000
-#define PMU_MEM_SCRUBBING_TIMEOUT_DEFAULT 10
+static bool gp106_is_pmu_supported(struct gk20a *g)
+{
+        return true;
+}
 
-static int gp106_pmu_enable_hw(struct nvgpu_pmu *pmu, bool enable)
+bool gp106_pmu_is_engine_in_reset(struct gk20a *g)
 {
-        struct gk20a *g = gk20a_from_pmu(pmu);
+        u32 reg_reset;
+        bool status = false;
 
-        gk20a_dbg_fn("");
+        reg_reset = gk20a_readl(g, pwr_falcon_engine_r());
+        if (reg_reset == pwr_falcon_engine_reset_true_f())
+                status = true;
+
+        return status;
+}
 
+int gp106_pmu_engine_reset(struct gk20a *g, bool do_reset)
+{
         /*
         * From GP10X onwards, we are using PPWR_FALCON_ENGINE for reset. And as
-        * it may come into same behaviour, reading NV_PPWR_FALCON_ENGINE again
+        * it may come into same behavior, reading NV_PPWR_FALCON_ENGINE again
         * after Reset.
         */
-
-        if (enable) {
-                int retries = PMU_MEM_SCRUBBING_TIMEOUT_MAX /
-                                PMU_MEM_SCRUBBING_TIMEOUT_DEFAULT;
+        if (do_reset) {
                 gk20a_writel(g, pwr_falcon_engine_r(),
                         pwr_falcon_engine_reset_false_f());
                 gk20a_readl(g, pwr_falcon_engine_r());
-
-                /* make sure ELPG is in a good state */
-                if (g->ops.clock_gating.slcg_pmu_load_gating_prod)
-                        g->ops.clock_gating.slcg_pmu_load_gating_prod(g,
-                                        g->slcg_enabled);
-                if (g->ops.clock_gating.blcg_pmu_load_gating_prod)
-                        g->ops.clock_gating.blcg_pmu_load_gating_prod(g,
-                                        g->blcg_enabled);
-
-                /* wait for Scrubbing to complete */
-                do {
-                        if (nvgpu_flcn_get_mem_scrubbing_status(pmu->flcn)) {
-                                gk20a_dbg_fn("done");
-                                return 0;
-                        }
-                        nvgpu_udelay(PMU_MEM_SCRUBBING_TIMEOUT_DEFAULT);
-                } while (--retries);
-
-                /* If scrubbing timeout, keep PMU in reset state */
-                gk20a_writel(g, pwr_falcon_engine_r(),
-                        pwr_falcon_engine_reset_true_f());
-                gk20a_readl(g, pwr_falcon_engine_r());
-                nvgpu_err(g, "Falcon mem scrubbing timeout");
-                return -ETIMEDOUT;
         } else {
-                /* DISBALE */
                 gk20a_writel(g, pwr_falcon_engine_r(),
                         pwr_falcon_engine_reset_true_f());
                 gk20a_readl(g, pwr_falcon_engine_r());
-                return 0;
         }
-}
 
-static int pmu_enable(struct nvgpu_pmu *pmu, bool enable)
-{
-        struct gk20a *g = gk20a_from_pmu(pmu);
-        u32 reg_reset;
-        int err;
-
-        gk20a_dbg_fn("");
-
-        if (!enable) {
-                reg_reset = gk20a_readl(g, pwr_falcon_engine_r());
-                if (reg_reset !=
-                        pwr_falcon_engine_reset_true_f()) {
-
-                        pmu_enable_irq(pmu, false);
-                        gp106_pmu_enable_hw(pmu, false);
-                        nvgpu_udelay(10);
-                }
-        } else {
-                gp106_pmu_enable_hw(pmu, true);
-                /* TBD: post reset */
-
-                /*idle the PMU and enable interrupts on the Falcon*/
-                err = nvgpu_flcn_wait_idle(pmu->flcn);
-                if (err)
-                        return err;
-                nvgpu_udelay(5);
-                pmu_enable_irq(pmu, true);
-        }
-
-        gk20a_dbg_fn("done");
         return 0;
 }
 
-int gp106_pmu_reset(struct gk20a *g)
-{
-        struct nvgpu_pmu *pmu = &g->pmu;
-        int err = 0;
-
-        gk20a_dbg_fn("");
-
-        err = nvgpu_flcn_wait_idle(pmu->flcn);
-        if (err)
-                return err;
-
-        /* TBD: release pmu hw mutex */
-
-        err = pmu_enable(pmu, false);
-        if (err)
-                return err;
-
-        /* TBD: cancel all sequences */
-        /* TBD: init all sequences and state tables */
-        /* TBD: restore pre-init message handler */
-
-        err = pmu_enable(pmu, true);
-        if (err)
-                return err;
-
-        return err;
-}
-
-static int gp106_sec2_reset(struct gk20a *g)
-{
-        gk20a_dbg_fn("");
-        //sec2 reset
-        gk20a_writel(g, psec_falcon_engine_r(),
-                        pwr_falcon_engine_reset_true_f());
-        nvgpu_udelay(10);
-        gk20a_writel(g, psec_falcon_engine_r(),
-                        pwr_falcon_engine_reset_false_f());
-
-        gk20a_dbg_fn("done");
-        return 0;
-}
-
-static int gp106_falcon_reset(struct gk20a *g)
-{
-        gk20a_dbg_fn("");
-
-        gp106_pmu_reset(g);
-        gp106_sec2_reset(g);
-
-        gk20a_dbg_fn("done");
-        return 0;
-}
-
-static bool gp106_is_pmu_supported(struct gk20a *g)
-{
-        return true;
-}
-
 static u32 gp106_pmu_pg_feature_list(struct gk20a *g, u32 pg_engine_id)
 {
         if (pg_engine_id == PMU_PG_ELPG_ENGINE_ID_GRAPHICS)
@@ -439,10 +331,11 @@ void gp106_init_pmu_ops(struct gpu_ops *gops)
         gops->pmu.pmu_lpwr_disable_pg = nvgpu_lpwr_disable_pg;
         gops->pmu.pmu_pg_param_post_init = nvgpu_lpwr_post_init;
         gops->pmu.dump_secure_fuses = NULL;
-        gops->pmu.reset = gp106_falcon_reset;
         gops->pmu.mclk_init = gp106_mclk_init;
         gops->pmu.mclk_deinit = gp106_mclk_deinit;
         gops->pmu.is_pmu_supported = gp106_is_pmu_supported;
+        gops->pmu.reset_engine = gp106_pmu_engine_reset;
+        gops->pmu.is_engine_in_reset = gp106_pmu_is_engine_in_reset;
 
         gk20a_dbg_fn("done");
 }