[3/8] drm: msm: split out fence and iotrace modules

diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index b8beb9bccd91..d987c584d817 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -21,7 +21,7 @@  config DRM_MSM_REGISTER_LOGGING
 	help
 	  Compile in support for logging register reads/writes in a format
 	  that can be parsed by envytools demsm tool.  If enabled, register
-	  logging can be switched on via msm.reglog=y module param.
+	  logging can be switched on via msm_iotrace.reglog=y module param.
 
 source "drivers/gpu/drm/msm/dsi/Kconfig"
 source "drivers/gpu/drm/msm/hdmi/Kconfig"
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 24f6fd2b9651..acc02aef1b42 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -44,4 +44,6 @@  obj-$(CONFIG_DRM_MSM_DSI) += dsi/
 obj-$(CONFIG_DRM_MSM_HDMI) += hdmi/
 obj-$(CONFIG_DRM_MSM_EDP) += edp/
 
-obj-$(CONFIG_DRM_MSM)	+= drm-msm.o
+obj-$(CONFIG_DRM_MSM)	+= drm-msm.o drm_msm_helper.o
+
+drm_msm_helper-y	+= msm_iotrace.o msm_fence.o
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index d52910e2c26c..5430ea7d2375 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -46,14 +46,6 @@  int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
 	return idx;
 }
 
-#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
-static bool reglog = false;
-MODULE_PARM_DESC(reglog, "Enable register read/write logging");
-module_param(reglog, bool, 0600);
-#else
-#define reglog 0
-#endif
-
 #ifdef CONFIG_DRM_FBDEV_EMULATION
 static bool fbdev = true;
 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
@@ -64,56 +56,6 @@  static char *vram = "16m";
 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
 module_param(vram, charp, 0);
 
-/*
- * Util/helpers:
- */
-
-void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
-		const char *dbgname)
-{
-	struct resource *res;
-	unsigned long size;
-	void __iomem *ptr;
-
-	if (name)
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
-	else
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	if (!res) {
-		dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
-		return ERR_PTR(-EINVAL);
-	}
-
-	size = resource_size(res);
-
-	ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
-	if (!ptr) {
-		dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	if (reglog)
-		printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
-
-	return ptr;
-}
-
-void msm_writel(u32 data, void __iomem *addr)
-{
-	if (reglog)
-		printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
-	writel(data, addr);
-}
-
-u32 msm_readl(const void __iomem *addr)
-{
-	u32 val = readl(addr);
-	if (reglog)
-		printk(KERN_ERR "IO:R %p %08x\n", addr, val);
-	return val;
-}
-
 struct vblank_event {
 	struct list_head node;
 	int crtc_id;
@@ -691,113 +633,6 @@  static void msm_debugfs_cleanup(struct drm_minor *minor)
 #endif
 
 /*
- * Fences:
- */
-
-int msm_wait_fence(struct drm_device *dev, uint32_t fence,
-		ktime_t *timeout , bool interruptible)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	int ret;
-
-	if (!priv->gpu)
-		return 0;
-
-	if (fence > priv->gpu->submitted_fence) {
-		DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
-				fence, priv->gpu->submitted_fence);
-		return -EINVAL;
-	}
-
-	if (!timeout) {
-		/* no-wait: */
-		ret = fence_completed(dev, fence) ? 0 : -EBUSY;
-	} else {
-		ktime_t now = ktime_get();
-		unsigned long remaining_jiffies;
-
-		if (ktime_compare(*timeout, now) < 0) {
-			remaining_jiffies = 0;
-		} else {
-			ktime_t rem = ktime_sub(*timeout, now);
-			struct timespec ts = ktime_to_timespec(rem);
-			remaining_jiffies = timespec_to_jiffies(&ts);
-		}
-
-		if (interruptible)
-			ret = wait_event_interruptible_timeout(priv->fence_event,
-				fence_completed(dev, fence),
-				remaining_jiffies);
-		else
-			ret = wait_event_timeout(priv->fence_event,
-				fence_completed(dev, fence),
-				remaining_jiffies);
-
-		if (ret == 0) {
-			DBG("timeout waiting for fence: %u (completed: %u)",
-					fence, priv->completed_fence);
-			ret = -ETIMEDOUT;
-		} else if (ret != -ERESTARTSYS) {
-			ret = 0;
-		}
-	}
-
-	return ret;
-}
-
-int msm_queue_fence_cb(struct drm_device *dev,
-		struct msm_fence_cb *cb, uint32_t fence)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	int ret = 0;
-
-	mutex_lock(&dev->struct_mutex);
-	if (!list_empty(&cb->work.entry)) {
-		ret = -EINVAL;
-	} else if (fence > priv->completed_fence) {
-		cb->fence = fence;
-		list_add_tail(&cb->work.entry, &priv->fence_cbs);
-	} else {
-		queue_work(priv->wq, &cb->work);
-	}
-	mutex_unlock(&dev->struct_mutex);
-
-	return ret;
-}
-
-/* called from workqueue */
-void msm_update_fence(struct drm_device *dev, uint32_t fence)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-
-	mutex_lock(&dev->struct_mutex);
-	priv->completed_fence = max(fence, priv->completed_fence);
-
-	while (!list_empty(&priv->fence_cbs)) {
-		struct msm_fence_cb *cb;
-
-		cb = list_first_entry(&priv->fence_cbs,
-				struct msm_fence_cb, work.entry);
-
-		if (cb->fence > priv->completed_fence)
-			break;
-
-		list_del_init(&cb->work.entry);
-		queue_work(priv->wq, &cb->work);
-	}
-
-	mutex_unlock(&dev->struct_mutex);
-
-	wake_up_all(&priv->fence_event);
-}
-
-void __msm_fence_worker(struct work_struct *work)
-{
-	struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
-	cb->func(cb);
-}
-
-/*
  * DRM ioctls:
  */
 
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index a2755b4a0d86..b8bd88b66c9c 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -28,6 +28,7 @@ 
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <linux/list.h>
+#include <linux/io.h>
 #include <linux/iommu.h>
 #include <linux/types.h>
 #include <linux/of_graph.h>
@@ -330,8 +331,19 @@  static inline void msm_rd_dump_submit(struct msm_gem_submit *submit) {}
 
 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
 		const char *dbgname);
+#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
 void msm_writel(u32 data, void __iomem *addr);
 u32 msm_readl(const void __iomem *addr);
+#else
+static inline void msm_writel(u32 data, void __iomem *addr)
+{
+	writel(data, addr);
+}
+static inline u32 msm_readl(const void __iomem *addr)
+{
+	return readl(addr);
+}
+#endif
 
 #define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
 #define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
diff --git a/drivers/gpu/drm/msm/msm_fence.c b/drivers/gpu/drm/msm/msm_fence.c
new file mode 100644
index 000000000000..df66e04e01d8
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_fence.c
@@ -0,0 +1,115 @@ 
+#include <linux/ktime.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <drm/drmP.h>
+
+#include "msm_drv.h"
+#include "msm_gpu.h"
+
+int msm_wait_fence(struct drm_device *dev, uint32_t fence,
+		ktime_t *timeout , bool interruptible)
+{
+	struct msm_drm_private *priv = dev->dev_private;
+	int ret;
+
+	if (!priv->gpu)
+		return 0;
+
+	if (fence > priv->gpu->submitted_fence) {
+		DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
+				fence, priv->gpu->submitted_fence);
+		return -EINVAL;
+	}
+
+	if (!timeout) {
+		/* no-wait: */
+		ret = fence_completed(dev, fence) ? 0 : -EBUSY;
+	} else {
+		ktime_t now = ktime_get();
+		unsigned long remaining_jiffies;
+
+		if (ktime_compare(*timeout, now) < 0) {
+			remaining_jiffies = 0;
+		} else {
+			ktime_t rem = ktime_sub(*timeout, now);
+			struct timespec ts = ktime_to_timespec(rem);
+			remaining_jiffies = timespec_to_jiffies(&ts);
+		}
+
+		if (interruptible)
+			ret = wait_event_interruptible_timeout(priv->fence_event,
+				fence_completed(dev, fence),
+				remaining_jiffies);
+		else
+			ret = wait_event_timeout(priv->fence_event,
+				fence_completed(dev, fence),
+				remaining_jiffies);
+
+		if (ret == 0) {
+			DBG("timeout waiting for fence: %u (completed: %u)",
+					fence, priv->completed_fence);
+			ret = -ETIMEDOUT;
+		} else if (ret != -ERESTARTSYS) {
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(msm_wait_fence);
+
+int msm_queue_fence_cb(struct drm_device *dev,
+		struct msm_fence_cb *cb, uint32_t fence)
+{
+	struct msm_drm_private *priv = dev->dev_private;
+	int ret = 0;
+
+	mutex_lock(&dev->struct_mutex);
+	if (!list_empty(&cb->work.entry)) {
+		ret = -EINVAL;
+	} else if (fence > priv->completed_fence) {
+		cb->fence = fence;
+		list_add_tail(&cb->work.entry, &priv->fence_cbs);
+	} else {
+		queue_work(priv->wq, &cb->work);
+	}
+	mutex_unlock(&dev->struct_mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(msm_queue_fence_cb);
+
+/* called from workqueue */
+void msm_update_fence(struct drm_device *dev, uint32_t fence)
+{
+	struct msm_drm_private *priv = dev->dev_private;
+
+	mutex_lock(&dev->struct_mutex);
+	priv->completed_fence = max(fence, priv->completed_fence);
+
+	while (!list_empty(&priv->fence_cbs)) {
+		struct msm_fence_cb *cb;
+
+		cb = list_first_entry(&priv->fence_cbs,
+				struct msm_fence_cb, work.entry);
+
+		if (cb->fence > priv->completed_fence)
+			break;
+
+		list_del_init(&cb->work.entry);
+		queue_work(priv->wq, &cb->work);
+	}
+
+	mutex_unlock(&dev->struct_mutex);
+
+	wake_up_all(&priv->fence_event);
+}
+EXPORT_SYMBOL_GPL(msm_update_fence);
+
+void __msm_fence_worker(struct work_struct *work)
+{
+	struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
+	cb->func(cb);
+}
+EXPORT_SYMBOL_GPL(__msm_fence_worker);
diff --git a/drivers/gpu/drm/msm/msm_iotrace.c b/drivers/gpu/drm/msm/msm_iotrace.c
new file mode 100644
index 000000000000..7761470eee26
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_iotrace.c
@@ -0,0 +1,65 @@ 
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/printk.h>
+#include <linux/module.h>
+
+static bool reglog = false;
+
+#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
+MODULE_PARM_DESC(reglog, "Enable register read/write logging");
+module_param(reglog, bool, 0600);
+
+void msm_writel(u32 data, void __iomem *addr)
+{
+	if (reglog)
+		printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
+	writel(data, addr);
+}
+EXPORT_SYMBOL_GPL(msm_writel);
+
+u32 msm_readl(const void __iomem *addr)
+{
+	u32 val = readl(addr);
+	if (reglog)
+		printk(KERN_ERR "IO:R %p %08x\n", addr, val);
+	return val;
+}
+EXPORT_SYMBOL_GPL(msm_readl);
+#endif
+
+void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
+		const char *dbgname)
+{
+	struct resource *res;
+	unsigned long size;
+	void __iomem *ptr;
+
+	if (name)
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
+	else
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	if (!res) {
+		dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
+		return ERR_PTR(-EINVAL);
+	}
+
+	size = resource_size(res);
+
+	ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
+	if (!ptr) {
+		dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	if (reglog)
+		printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
+
+	return ptr;
+}
+EXPORT_SYMBOL_GPL(msm_ioremap);
+
+MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
+MODULE_DESCRIPTION("MSM DRM Driver support code");
+MODULE_LICENSE("GPL");