1 files changed, 402 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_kernel_sysfs.c b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_kernel_sysfs.c
new file mode 100644
index 00000000000..b1dca5f7ba5
--- /dev/null
+++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/mali/linux/mali_kernel_sysfs.c
@@ -0,0 +1,402 @@
+/**
+ * Copyright (C) 2011-2012 ARM Limited. All rights reserved.
+ * 
+ * This program is free software and is provided to you under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ * 
+ * A copy of the licence is included with the program, and can also be obtained from Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+
+/**
+ * @file mali_kernel_sysfs.c
+ * Implementation of some sysfs data exports
+ */
+
+#include <linux/fs.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include "mali_kernel_license.h"
+#include "mali_kernel_linux.h"
+#include "mali_ukk.h"
+
+#if MALI_LICENSE_IS_GPL
+
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+#include <asm/uaccess.h>
+#include <linux/slab.h>
+#include "mali_kernel_subsystem.h"
+#include "mali_kernel_sysfs.h"
+#include "mali_osk_profiling.h"
+
+static struct dentry *mali_debugfs_dir = NULL;
+
+#if MALI_STATE_TRACKING
+static int mali_seq_internal_state_show(struct seq_file *seq_file, void *v)
+{
+	u32 len = 0;
+	u32 size;
+	char *buf;
+
+	size = seq_get_buf(seq_file, &buf);
+
+	if(!size)
+	{
+			return -ENOMEM;
+	}
+
+	/* Create the internal state dump. */
+	len  = snprintf(buf+len, size-len, "Mali device driver %s\n", SVN_REV_STRING);
+	len += snprintf(buf+len, size-len, "License: %s\n\n", MALI_KERNEL_LINUX_LICENSE);
+
+	len += _mali_kernel_core_dump_state(buf + len, size - len);
+
+	seq_commit(seq_file, len);
+
+	return 0;
+}
+
+static int mali_seq_internal_state_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, mali_seq_internal_state_show, NULL);
+}
+
+static const struct file_operations mali_seq_internal_state_fops = {
+	.owner = THIS_MODULE,
+	.open = mali_seq_internal_state_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+#endif /* MALI_STATE_TRACKING */
+
+
+#if MALI_INTERNAL_TIMELINE_PROFILING_ENABLED
+static ssize_t profiling_record_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos)
+{
+	char buf[64];
+	int r;
+
+	r = sprintf(buf, "%u\n", _mali_osk_profiling_is_recording() ? 1 : 0);
+	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);
+}
+
+static ssize_t profiling_record_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos)
+{
+	char buf[64];
+	unsigned long val;
+	int ret;
+
+	if (cnt >= sizeof(buf))
+	{
+		return -EINVAL;
+	}
+
+	if (copy_from_user(&buf, ubuf, cnt))
+	{
+		return -EFAULT;
+	}
+
+	buf[cnt] = 0;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret < 0)
+	{
+		return ret;
+	}
+
+	if (val != 0)
+	{
+		u32 limit = MALI_PROFILING_MAX_BUFFER_ENTRIES; /* This can be made configurable at a later stage if we need to */
+
+		/* check if we are already recording */
+		if (MALI_TRUE == _mali_osk_profiling_is_recording())
+		{
+			MALI_DEBUG_PRINT(3, ("Recording of profiling events already in progress\n"));
+			return -EFAULT;
+		}
+
+		/* check if we need to clear out an old recording first */
+		if (MALI_TRUE == _mali_osk_profiling_have_recording())
+		{
+			if (_MALI_OSK_ERR_OK != _mali_osk_profiling_clear())
+			{
+				MALI_DEBUG_PRINT(3, ("Failed to clear existing recording of profiling events\n"));
+				return -EFAULT;
+			}
+		}
+
+		/* start recording profiling data */
+		if (_MALI_OSK_ERR_OK != _mali_osk_profiling_start(&limit))
+		{
+			MALI_DEBUG_PRINT(3, ("Failed to start recording of profiling events\n"));
+			return -EFAULT;
+		}
+
+		MALI_DEBUG_PRINT(3, ("Profiling recording started (max %u events)\n", limit));
+	}
+	else
+	{
+		/* stop recording profiling data */
+		u32 count = 0;
+		if (_MALI_OSK_ERR_OK != _mali_osk_profiling_stop(&count))
+		{
+			MALI_DEBUG_PRINT(2, ("Failed to stop recording of profiling events\n"));
+			return -EFAULT;
+		}
+		
+		MALI_DEBUG_PRINT(2, ("Profiling recording stopped (recorded %u events)\n", count));
+	}
+
+	*ppos += cnt;
+	return cnt;
+}
+
+static const struct file_operations profiling_record_fops = {
+	.owner = THIS_MODULE,
+	.read  = profiling_record_read,
+	.write = profiling_record_write,
+};
+
+static void *profiling_events_start(struct seq_file *s, loff_t *pos)
+{
+	loff_t *spos;
+
+	/* check if we have data avaiable */
+	if (MALI_TRUE != _mali_osk_profiling_have_recording())
+	{
+		return NULL;
+	}
+
+	spos = kmalloc(sizeof(loff_t), GFP_KERNEL);
+	if (NULL == spos)
+	{
+		return NULL;
+	}
+
+	*spos = *pos;
+	return spos;
+}
+
+static void *profiling_events_next(struct seq_file *s, void *v, loff_t *pos)
+{
+	loff_t *spos = v;
+
+	/* check if we have data avaiable */
+	if (MALI_TRUE != _mali_osk_profiling_have_recording())
+	{
+		return NULL;
+	}
+
+	/* check if the next entry actually is avaiable */
+	if (_mali_osk_profiling_get_count() <= (u32)(*spos + 1))
+	{
+		return NULL;
+	}
+
+	*pos = ++*spos;
+	return spos;
+}
+
+static void profiling_events_stop(struct seq_file *s, void *v)
+{
+	kfree(v);
+}
+
+static int profiling_events_show(struct seq_file *seq_file, void *v)
+{
+	loff_t *spos = v;
+	u32 index;
+	u64 timestamp;
+	u32 event_id;
+	u32 data[5];
+
+	index = (u32)*spos;
+
+	/* Retrieve all events */
+	if (_MALI_OSK_ERR_OK == _mali_osk_profiling_get_event(index, &timestamp, &event_id, data))
+	{
+		seq_printf(seq_file, "%llu %u %u %u %u %u %u\n", timestamp, event_id, data[0], data[1], data[2], data[3], data[4]);
+		return 0;
+	}
+
+	return 0;
+}
+
+static const struct seq_operations profiling_events_seq_ops = {
+	.start = profiling_events_start,
+	.next  = profiling_events_next,
+	.stop  = profiling_events_stop,
+	.show  = profiling_events_show
+};
+
+static int profiling_events_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &profiling_events_seq_ops);
+}
+
+static const struct file_operations profiling_events_fops = {
+	.owner = THIS_MODULE,
+	.open = profiling_events_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = seq_release,
+};
+
+static ssize_t profiling_proc_default_enable_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos)
+{
+	char buf[64];
+	int r;
+
+	r = sprintf(buf, "%u\n", _mali_osk_profiling_get_default_enable_state() ? 1 : 0);
+	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);
+}
+
+static ssize_t profiling_proc_default_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos)
+{
+	char buf[64];
+	unsigned long val;
+	int ret;
+
+	if (cnt >= sizeof(buf))
+	{
+		return -EINVAL;
+	}
+
+	if (copy_from_user(&buf, ubuf, cnt))
+	{
+		return -EFAULT;
+	}
+
+	buf[cnt] = 0;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret < 0)
+	{
+		return ret;
+	}
+
+	_mali_osk_profiling_set_default_enable_state(val != 0 ? MALI_TRUE : MALI_FALSE);
+
+	*ppos += cnt;
+	return cnt;
+}
+
+static const struct file_operations profiling_proc_default_enable_fops = {
+	.owner = THIS_MODULE,
+	.read  = profiling_proc_default_enable_read,
+	.write = profiling_proc_default_enable_write,
+};
+#endif
+
+static ssize_t memory_used_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos)
+{
+	char buf[64];
+	size_t r;
+	u32 mem = _mali_ukk_report_memory_usage();
+
+	r = snprintf(buf, 64, "%u\n", mem);
+	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);
+}
+
+static const struct file_operations memory_usage_fops = {
+	.owner = THIS_MODULE,
+	.read = memory_used_read,
+};
+
+int mali_sysfs_register(struct mali_dev *device, dev_t dev, const char *mali_dev_name)
+{
+	int err = 0;
+	struct device * mdev;
+
+	device->mali_class = class_create(THIS_MODULE, mali_dev_name);
+	if (IS_ERR(device->mali_class))
+	{
+		err = PTR_ERR(device->mali_class);
+		goto init_class_err;
+	}
+	mdev = device_create(device->mali_class, NULL, dev, NULL, mali_dev_name);
+	if (IS_ERR(mdev))
+	{
+		err = PTR_ERR(mdev);
+		goto init_mdev_err;
+	}
+
+	mali_debugfs_dir = debugfs_create_dir(mali_dev_name, NULL);
+	if(ERR_PTR(-ENODEV) == mali_debugfs_dir)
+	{
+		/* Debugfs not supported. */
+		mali_debugfs_dir = NULL;
+	}
+	else
+	{
+		if(NULL != mali_debugfs_dir)
+		{
+			/* Debugfs directory created successfully; create files now */
+#if MALI_INTERNAL_TIMELINE_PROFILING_ENABLED
+			struct dentry *mali_profiling_dir = debugfs_create_dir("profiling", mali_debugfs_dir);
+			if (mali_profiling_dir != NULL)
+			{
+				struct dentry *mali_profiling_proc_dir = debugfs_create_dir("proc", mali_profiling_dir);
+				if (mali_profiling_proc_dir != NULL)
+				{
+					struct dentry *mali_profiling_proc_default_dir = debugfs_create_dir("default", mali_profiling_proc_dir);
+					if (mali_profiling_proc_default_dir != NULL)
+					{
+						debugfs_create_file("enable", 0600, mali_profiling_proc_default_dir, NULL, &profiling_proc_default_enable_fops);
+					}
+				}
+				debugfs_create_file("record", 0600, mali_profiling_dir, NULL, &profiling_record_fops);
+				debugfs_create_file("events", 0400, mali_profiling_dir, NULL, &profiling_events_fops);
+			}
+#endif
+
+#if MALI_STATE_TRACKING
+			debugfs_create_file("state_dump", 0400, mali_debugfs_dir, NULL, &mali_seq_internal_state_fops);
+#endif
+
+			debugfs_create_file("memory_usage", 0400, mali_debugfs_dir, NULL, &memory_usage_fops);
+		}
+	}
+
+	/* Success! */
+	return 0;
+
+	/* Error handling */
+init_mdev_err:
+	class_destroy(device->mali_class);
+init_class_err:
+
+	return err;
+}
+
+int mali_sysfs_unregister(struct mali_dev *device, dev_t dev, const char *mali_dev_name)
+{
+	if(NULL != mali_debugfs_dir)
+	{
+		debugfs_remove_recursive(mali_debugfs_dir);
+	}
+	device_destroy(device->mali_class, dev);
+	class_destroy(device->mali_class);
+
+	return 0;
+}
+
+#else
+
+/* Dummy implementations for non-GPL */
+
+int mali_sysfs_register(struct mali_dev *device, dev_t dev, const char *mali_dev_name)
+{
+	return 0;
+}
+
+int mali_sysfs_unregister(struct mali_dev *device, dev_t dev, const char *mali_dev_name)
+{
+	return 0;
+}
+
+
+#endif