gpu: nvgpu: use nvgpu_flcn_* interfaces

- set nvgpu_flcn_reset() to point to gk20a_pmu_reset()
- set PMU interrupt using nvgpu_flcn_enable_irq()
- replace pmu_idle with nvgpu_flcn_wait_idle()

JIRA NVGPU-57

Change-Id: I50d0310ae78ad266da3c1e662f1598d61ff7abb6
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1469478
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 33 insertions, 85 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
index 2f8e456f..fefa77fc 100644
--- a/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/pmu_gk20a.c
@@ -200,38 +200,11 @@ void pmu_copy_to_dmem(struct nvgpu_pmu *pmu,
         return;
 }
 
-int pmu_idle(struct nvgpu_pmu *pmu)
-{
-        struct gk20a *g = gk20a_from_pmu(pmu);
-        struct nvgpu_timeout timeout;
-        u32 idle_stat;
-
-        nvgpu_timeout_init(g, &timeout, 2000, NVGPU_TIMER_RETRY_TIMER);
-
-        /* wait for pmu idle */
-        do {
-                idle_stat = gk20a_readl(g, pwr_falcon_idlestate_r());
-
-                if (pwr_falcon_idlestate_falcon_busy_v(idle_stat) == 0 &&
-                    pwr_falcon_idlestate_ext_busy_v(idle_stat) == 0) {
-                        break;
-                }
-
-                if (nvgpu_timeout_expired_msg(&timeout,
-                                            "waiting for pmu idle: 0x%08x",
-                                            idle_stat))
-                        return -EBUSY;
-
-                nvgpu_usleep_range(100, 200);
-        } while (1);
-
-        gk20a_dbg_fn("done");
-        return 0;
-}
-
 void pmu_enable_irq(struct nvgpu_pmu *pmu, bool enable)
 {
         struct gk20a *g = gk20a_from_pmu(pmu);
+        u32 intr_mask;
+        u32 intr_dest;
 
         gk20a_dbg_fn("");
 
@@ -240,21 +213,11 @@ void pmu_enable_irq(struct nvgpu_pmu *pmu, bool enable)
         g->ops.mc.intr_unit_config(g, MC_INTR_UNIT_DISABLE, false,
                         mc_intr_mask_1_pmu_enabled_f());
 
-        gk20a_writel(g, pwr_falcon_irqmclr_r(),
-                pwr_falcon_irqmclr_gptmr_f(1)  |
-                pwr_falcon_irqmclr_wdtmr_f(1)  |
-                pwr_falcon_irqmclr_mthd_f(1)   |
-                pwr_falcon_irqmclr_ctxsw_f(1)  |
-                pwr_falcon_irqmclr_halt_f(1)   |
-                pwr_falcon_irqmclr_exterr_f(1) |
-                pwr_falcon_irqmclr_swgen0_f(1) |
-                pwr_falcon_irqmclr_swgen1_f(1) |
-                pwr_falcon_irqmclr_ext_f(0xff));
+        nvgpu_flcn_set_irq(pmu->flcn, false, 0x0, 0x0);
 
         if (enable) {
                 /* dest 0=falcon, 1=host; level 0=irq0, 1=irq1 */
-                gk20a_writel(g, pwr_falcon_irqdest_r(),
-                        pwr_falcon_irqdest_host_gptmr_f(0)    |
+                intr_dest = pwr_falcon_irqdest_host_gptmr_f(0)    |
                         pwr_falcon_irqdest_host_wdtmr_f(1)    |
                         pwr_falcon_irqdest_host_mthd_f(0)     |
                         pwr_falcon_irqdest_host_ctxsw_f(0)    |
@@ -271,18 +234,19 @@ void pmu_enable_irq(struct nvgpu_pmu *pmu, bool enable)
                         pwr_falcon_irqdest_target_exterr_f(0) |
                         pwr_falcon_irqdest_target_swgen0_f(0) |
                         pwr_falcon_irqdest_target_swgen1_f(0) |
-                        pwr_falcon_irqdest_target_ext_f(0xff));
+                        pwr_falcon_irqdest_target_ext_f(0xff);
 
                 /* 0=disable, 1=enable */
-                gk20a_writel(g, pwr_falcon_irqmset_r(),
-                        pwr_falcon_irqmset_gptmr_f(1)  |
+                intr_mask = pwr_falcon_irqmset_gptmr_f(1)  |
                         pwr_falcon_irqmset_wdtmr_f(1)  |
                         pwr_falcon_irqmset_mthd_f(0)   |
                         pwr_falcon_irqmset_ctxsw_f(0)  |
                         pwr_falcon_irqmset_halt_f(1)   |
                         pwr_falcon_irqmset_exterr_f(1) |
                         pwr_falcon_irqmset_swgen0_f(1) |
-                        pwr_falcon_irqmset_swgen1_f(1));
+                        pwr_falcon_irqmset_swgen1_f(1);
+
+                nvgpu_flcn_set_irq(pmu->flcn, true, intr_mask, intr_dest);
 
                 g->ops.mc.intr_unit_config(g, MC_INTR_UNIT_ENABLE, true,
                                 mc_intr_mask_0_pmu_enabled_f());
@@ -295,6 +259,7 @@ int pmu_enable_hw(struct nvgpu_pmu *pmu, bool enable)
 {
         struct gk20a *g = gk20a_from_pmu(pmu);
         struct nvgpu_timeout timeout;
+        int err = 0;
 
         gk20a_dbg_fn("");
 
@@ -313,13 +278,9 @@ int pmu_enable_hw(struct nvgpu_pmu *pmu, bool enable)
                                         PMU_MEM_SCRUBBING_TIMEOUT_DEFAULT,
                                    NVGPU_TIMER_RETRY_TIMER);
                 do {
-                        u32 w = gk20a_readl(g, pwr_falcon_dmactl_r()) &
-                                (pwr_falcon_dmactl_dmem_scrubbing_m() |
-                                 pwr_falcon_dmactl_imem_scrubbing_m());
-
-                        if (!w) {
+                        if (nvgpu_flcn_get_mem_scrubbing_status(pmu->flcn)) {
                                 gk20a_dbg_fn("done");
-                                return 0;
+                                goto exit;
                         }
                         nvgpu_udelay(PMU_MEM_SCRUBBING_TIMEOUT_DEFAULT);
                 } while (!nvgpu_timeout_expired(&timeout));
@@ -327,11 +288,12 @@ int pmu_enable_hw(struct nvgpu_pmu *pmu, bool enable)
                 g->ops.mc.disable(g, mc_enable_pwr_enabled_f());
                 nvgpu_err(g, "Falcon mem scrubbing timeout");
 
-                return -ETIMEDOUT;
-        } else {
+                err = -ETIMEDOUT;
+        } else
                 g->ops.mc.disable(g, mc_enable_pwr_enabled_f());
-                return 0;
-        }
+
+exit:
+        return err;
 }
 
 static int pmu_enable(struct nvgpu_pmu *pmu, bool enable)
@@ -357,7 +319,7 @@ static int pmu_enable(struct nvgpu_pmu *pmu, bool enable)
 
                 /* TBD: post reset */
 
-                err = pmu_idle(pmu);
+                err = nvgpu_flcn_wait_idle(pmu->flcn);
                 if (err)
                         return err;
 
@@ -368,31 +330,6 @@ static int pmu_enable(struct nvgpu_pmu *pmu, bool enable)
         return 0;
 }
 
-int pmu_reset(struct nvgpu_pmu *pmu)
-{
-        int err;
-
-        err = pmu_idle(pmu);
-        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 0;
-}
-
 int pmu_bootstrap(struct nvgpu_pmu *pmu)
 {
         struct gk20a *g = gk20a_from_pmu(pmu);
@@ -704,7 +641,7 @@ static int gk20a_init_pmu_setup_hw1(struct gk20a *g)
         gk20a_dbg_fn("");
 
         nvgpu_mutex_acquire(&pmu->isr_mutex);
-        g->ops.pmu.reset(g);
+        nvgpu_flcn_reset(pmu->flcn);
         pmu->isr_enabled = true;
         nvgpu_mutex_release(&pmu->isr_mutex);
 
@@ -737,11 +674,22 @@ static void gk20a_write_dmatrfbase(struct gk20a *g, u32 addr)
 
 int gk20a_pmu_reset(struct gk20a *g)
 {
-        int err;
         struct nvgpu_pmu *pmu = &g->pmu;
+        int err;
+
+        err = nvgpu_flcn_wait_idle(pmu->flcn);
+        if (err)
+                goto exit;
+
+        err = pmu_enable(pmu, false);
+        if (err)
+                goto exit;
 
-        err = pmu_reset(pmu);
+        err = pmu_enable(pmu, true);
+        if (err)
+                goto exit;
 
+exit:
         return err;
 }
 
@@ -799,7 +747,7 @@ void gk20a_init_pmu_ops(struct gpu_ops *gops)
         gops->pmu.alloc_blob_space = NULL;
         gops->pmu.pmu_populate_loader_cfg = NULL;
         gops->pmu.flcn_populate_bl_dmem_desc = NULL;
-        gops->pmu.reset = gk20a_pmu_reset;
+        gops->pmu.reset = NULL;
 }
 
 static void pmu_handle_zbc_msg(struct gk20a *g, struct pmu_msg *msg,