gpu: nvgpu: move can_railgate to enabled.h

The g->can_railgate flag is a global constant-ish property like the rest
of the flags behind nvgpu_is_enabled() API, so move it there.

Bug 200327089

Change-Id: Id1f2f16ea1975a03fb56f10c2f3c8c705574e341
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1764266
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/common/fifo/submit.c

@@ -368,7 +368,8 @@ static int nvgpu_submit_channel_gpfifo(struct channel_gk20a *c,
 	need_job_tracking = (flags & NVGPU_SUBMIT_FLAGS_FENCE_WAIT) ||
 			(flags & NVGPU_SUBMIT_FLAGS_FENCE_GET) ||
 			c->timeout.enabled ||
-			(g->can_railgate && !c->deterministic) ||
+			(nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE)
+			 && !c->deterministic) ||
 			!skip_buffer_refcounting;
 
 	if (need_job_tracking) {
@@ -405,7 +406,7 @@ static int nvgpu_submit_channel_gpfifo(struct channel_gk20a *c,
 		need_deferred_cleanup = !c->deterministic ||
 					need_sync_framework ||
 					c->timeout.enabled ||
-					(g->can_railgate &&
+					(nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE) &&
 					 !c->deterministic) ||
 					!skip_buffer_refcounting;
 

drivers/gpu/nvgpu/gk20a/gk20a.h

@@ -1401,7 +1401,6 @@ struct gk20a {
 
 	u32 ptimer_src_freq;
 
-	bool can_railgate;
 	int railgate_delay;
 	u8 ldiv_slowdown_factor;
 	unsigned int aggressive_sync_destroy_thresh;

drivers/gpu/nvgpu/include/nvgpu/enabled.h

@@ -35,6 +35,7 @@ struct gk20a;
 #define NVGPU_DRIVER_IS_DYING			2
 #define NVGPU_GR_USE_DMA_FOR_FW_BOOTSTRAP 3
 #define NVGPU_FECS_TRACE_VA			4
+#define NVGPU_CAN_RAILGATE			5
 
 /*
  * ECC flags

drivers/gpu/nvgpu/os/linux/driver_common.c

@@ -167,7 +167,7 @@ static void nvgpu_init_pm_vars(struct gk20a *g)
 #endif
 	g->ptimer_src_freq = platform->ptimer_src_freq;
 	g->support_pmu = support_gk20a_pmu(dev_from_gk20a(g));
-	g->can_railgate = platform->can_railgate_init;
+	__nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, platform->can_railgate_init);
 	g->ldiv_slowdown_factor = platform->ldiv_slowdown_factor_init;
 	/* if default delay is not set, set default delay to 500msec */
 	if (platform->railgate_delay_init)

drivers/gpu/nvgpu/os/linux/module.c

@@ -458,7 +458,7 @@ int __gk20a_do_idle(struct gk20a *g, bool force_reset)
 	 * If User disables rail gating, we take one more
 	 * extra refcount
 	 */
-	if (g->can_railgate)
+	if (nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE))
 		target_ref_cnt = 1;
 	else
 		target_ref_cnt = 2;
@@ -485,7 +485,7 @@ int __gk20a_do_idle(struct gk20a *g, bool force_reset)
 	nvgpu_timeout_init(g, &timeout, GK20A_WAIT_FOR_IDLE_MS,
 			   NVGPU_TIMER_CPU_TIMER);
 
-	if (g->can_railgate && !force_reset) {
+	if (nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE) && !force_reset) {
 		/*
 		 * Case 1 : GPU railgate is supported
 		 *
@@ -1047,7 +1047,7 @@ static int gk20a_pm_init(struct device *dev)
 	 * case, set autosuspend delay to negative which
 	 * will suspend runtime pm
 	 */
-	if (g->railgate_delay && g->can_railgate)
+	if (g->railgate_delay && nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE))
 		pm_runtime_set_autosuspend_delay(dev,
 				 g->railgate_delay);
 	else

drivers/gpu/nvgpu/os/linux/pci.c

@@ -605,7 +605,7 @@ static int nvgpu_pci_pm_init(struct device *dev)
 #ifdef CONFIG_PM
 	struct gk20a *g = get_gk20a(dev);
 
-	if (!g->can_railgate) {
+	if (!nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE)) {
 		pm_runtime_disable(dev);
 	} else {
 		if (g->railgate_delay)

drivers/gpu/nvgpu/os/linux/platform_gk20a_tegra.c

@@ -792,7 +792,7 @@ static int gk20a_tegra_probe(struct device *dev)
 
 	if (joint_xpu_rail) {
 		nvgpu_log_info(g, "XPU rails are joint\n");
-		platform->g->can_railgate = false;
+		__nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, false);
 	}
 
 	platform->g->clk.gpc_pll.id = GK20A_GPC_PLL;

drivers/gpu/nvgpu/os/linux/sysfs.c

@@ -305,16 +305,17 @@ static ssize_t railgate_enable_store(struct device *dev,
 	unsigned long railgate_enable = 0;
 	/* dev is guaranteed to be valid here. Ok to de-reference */
 	struct gk20a *g = get_gk20a(dev);
+	bool enabled = nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE);
 	int err;
 
 	if (kstrtoul(buf, 10, &railgate_enable) < 0)
 		return -EINVAL;
 
-	if (railgate_enable && !g->can_railgate) {
-		g->can_railgate = true;
+	if (railgate_enable && !enabled) {
+		__nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, true);
 		pm_runtime_set_autosuspend_delay(dev, g->railgate_delay);
-	} else if (railgate_enable == 0 && g->can_railgate) {
-		g->can_railgate = false;
+	} else if (railgate_enable == 0 && enabled) {
+		__nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, false);
 		pm_runtime_set_autosuspend_delay(dev, -1);
 	}
 	/* wake-up system to make rail-gating setting effective */
@@ -323,7 +324,8 @@ static ssize_t railgate_enable_store(struct device *dev,
 		return err;
 	gk20a_idle(g);
 
-	nvgpu_info(g, "railgate is %s.", g->can_railgate ?
+	nvgpu_info(g, "railgate is %s.",
+			nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE) ?
 			"enabled" : "disabled");
 
 	return count;
@@ -334,7 +336,8 @@ static ssize_t railgate_enable_read(struct device *dev,
 {
 	struct gk20a *g = get_gk20a(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", g->can_railgate ? 1 : 0);
+	return snprintf(buf, PAGE_SIZE, "%d\n",
+			nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE) ? 1 : 0);
 }
 
 static DEVICE_ATTR(railgate_enable, ROOTRW, railgate_enable_read,
@@ -349,7 +352,7 @@ static ssize_t railgate_delay_store(struct device *dev,
 	struct gk20a *g = get_gk20a(dev);
 	int err;
 
-	if (!g->can_railgate) {
+	if (!nvgpu_is_enabled(g, NVGPU_CAN_RAILGATE)) {
 		nvgpu_info(g, "does not support power-gating");
 		return count;
 	}

drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c

@@ -84,7 +84,7 @@ static void vgpu_init_vars(struct gk20a *g, struct gk20a_platform *platform)
 	g->aggressive_sync_destroy_thresh = platform->aggressive_sync_destroy_thresh;
 	g->has_syncpoints = platform->has_syncpoints;
 	g->ptimer_src_freq = platform->ptimer_src_freq;
-	g->can_railgate = platform->can_railgate_init;
+	__nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, platform->can_railgate_init);
 	g->railgate_delay = platform->railgate_delay_init;
 
 	__nvgpu_set_enabled(g, NVGPU_MM_UNIFY_ADDRESS_SPACES,