[PATCHv4 7/8] drm: tegra: Add gr2d device

[Terje Bergstrom <tbergstrom@nvidia.com>]

Add client driver for 2D device.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
---
 drivers/gpu/drm/tegra/Makefile |    2 +-
 drivers/gpu/drm/tegra/drm.c    |  211 ++++++++++++++++++++++++++-
 drivers/gpu/drm/tegra/drm.h    |   29 ++++
 drivers/gpu/drm/tegra/gr2d.c   |  307 ++++++++++++++++++++++++++++++++++++++++
 include/drm/tegra_drm.h        |  111 +++++++++++++++
 5 files changed, 658 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/tegra/gr2d.c

diff --git a/drivers/gpu/drm/tegra/Makefile b/drivers/gpu/drm/tegra/Makefile
index f4c05bb..2661f41 100644
--- a/drivers/gpu/drm/tegra/Makefile
+++ b/drivers/gpu/drm/tegra/Makefile
@@ -1,7 +1,7 @@
 ccflags-y := -Iinclude/drm
 ccflags-$(CONFIG_DRM_TEGRA_DEBUG) += -DDEBUG
 
-tegra-drm-y := drm.o fb.o dc.o
+tegra-drm-y := drm.o fb.o dc.o gr2d.o
 tegra-drm-y += output.o rgb.o hdmi.o
 
 obj-$(CONFIG_DRM_TEGRA) += tegra-drm.o
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 3de6c8e..637b621 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -36,8 +36,10 @@ static int tegra_drm_add_client(struct device *dev, void *data)
 	static const char * const compat[] = {
 		"nvidia,tegra20-dc",
 		"nvidia,tegra20-hdmi",
+		"nvidia,tegra20-gr2d",
 		"nvidia,tegra30-dc",
 		"nvidia,tegra30-hdmi",
+		"nvidia,tegra30-gr2d"
 	};
 	struct tegradrm *tegradrm = data;
 	struct tegra_drm_client_entry *client;
@@ -183,12 +185,29 @@ static int tegra_drm_unload(struct drm_device *drm)
 
 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
 {
-	return 0;
+	struct tegra_drm_fpriv *fpriv;
+	int err = 0;
+
+	fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
+	if (!fpriv)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&fpriv->contexts);
+	filp->driver_priv = fpriv;
+
+	return err;
 }
 
 static void tegra_drm_close(struct drm_device *drm, struct drm_file *filp)
 {
+	struct tegra_drm_fpriv *fpriv = tegra_drm_fpriv(filp);
+	struct tegra_drm_context *context, *tmp;
 
+	list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) {
+		context->client->ops->close_channel(context);
+		kfree(context);
+	}
+	kfree(fpriv);
 }
 
 static void tegra_drm_lastclose(struct drm_device *drm)
@@ -257,8 +276,14 @@ static int __init tegra_drm_init(void)
 	err = platform_driver_register(&tegra_hdmi_driver);
 	if (err < 0)
 		goto unregister_dc;
+
+	err = platform_driver_register(&tegra_gr2d_driver);
+	if (err < 0)
+		goto unregister_hdmi;
 	return 0;
 
+unregister_hdmi:
+	platform_driver_unregister(&tegra_hdmi_driver);
 unregister_dc:
 	platform_driver_unregister(&tegra_dc_driver);
 unregister_tegra_drv:
@@ -271,13 +296,197 @@ module_init(tegra_drm_init);
 
 static void __exit tegra_drm_exit(void)
 {
+	platform_driver_unregister(&tegra_gr2d_driver);
 	platform_driver_unregister(&tegra_hdmi_driver);
 	platform_driver_unregister(&tegra_dc_driver);
 	platform_driver_unregister(&tegra_drm_platform_driver);
 }
 module_exit(tegra_drm_exit);
 
+static int
+tegra_drm_ioctl_syncpt_read(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_syncpt_read_args *args = data;
+
+	args->value = host1x_syncpt_read_byid(args->id);
+	return 0;
+}
+
+static int
+tegra_drm_ioctl_syncpt_incr(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_syncpt_incr_args *args = data;
+	host1x_syncpt_incr_byid(args->id);
+	return 0;
+}
+
+static int
+tegra_drm_ioctl_syncpt_wait(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_syncpt_wait_args *args = data;
+	int err;
+
+	err = host1x_syncpt_wait_byid(args->id, args->thresh,
+			args->timeout, &args->value);
+
+	return err;
+}
+
+static int
+tegra_drm_ioctl_open_channel(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_open_channel_args *args = data;
+	struct tegra_drm_client *client;
+	struct tegra_drm_context *context;
+	struct tegra_drm_fpriv *fpriv = tegra_drm_fpriv(file_priv);
+	struct tegradrm *tegradrm = drm->dev_private;
+	int err = 0;
+
+	context = kzalloc(sizeof(*context), GFP_KERNEL);
+	if (!context)
+		return -ENOMEM;
+
+	list_for_each_entry(client, &tegradrm->clients, list) {
+		if (client->class == args->class) {
+			dev_dbg(drm->dev, "opening client %x\n", args->class);
+			context->client = client;
+			err = client->ops->open_channel(client, context);
+			if (err)
+				goto out;
+
+			dev_dbg(drm->dev, "context %p\n", context);
+			list_add(&context->list, &fpriv->contexts);
+			args->context = (uintptr_t)context;
+			goto out;
+		}
+	}
+	err = -ENODEV;
+
+out:
+	if (err)
+		kfree(context);
+
+	return err;
+}
+
+static int
+tegra_drm_ioctl_close_channel(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_open_channel_args *args = data;
+	struct tegra_drm_context *context, *tmp;
+	struct tegra_drm_fpriv *fpriv = tegra_drm_fpriv(file_priv);
+	int err = 0;
+
+	list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) {
+		if ((uintptr_t)context == args->context) {
+			context->client->ops->close_channel(context);
+			list_del(&context->list);
+			kfree(context);
+			goto out;
+		}
+	}
+	err = -EINVAL;
+
+out:
+	return err;
+}
+
+static int
+tegra_drm_ioctl_get_syncpoint(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_get_channel_param_args *args = data;
+	struct tegra_drm_context *context;
+	struct tegra_drm_fpriv *fpriv = tegra_drm_fpriv(file_priv);
+	int err = 0;
+
+	list_for_each_entry(context, &fpriv->contexts, list) {
+		if ((uintptr_t)context == args->context) {
+			args->value =
+				context->client->ops->get_syncpoint(context,
+						args->param);
+			goto out;
+		}
+	}
+	err = -ENODEV;
+
+out:
+	return err;
+}
+
+static int
+tegra_drm_ioctl_submit(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_drm_submit_args *args = data;
+	struct tegra_drm_context *context;
+	struct tegra_drm_fpriv *fpriv = tegra_drm_fpriv(file_priv);
+	int err = 0;
+
+	list_for_each_entry(context, &fpriv->contexts, list) {
+		if ((uintptr_t)context == args->context) {
+			err = context->client->ops->submit(context, args, drm,
+				file_priv);
+			goto out;
+		}
+	}
+	err = -ENODEV;
+
+out:
+	return err;
+
+}
+
+static int
+tegra_drm_create_ioctl(struct drm_device *drm, void *data,
+			 struct drm_file *file_priv)
+{
+	struct tegra_gem_create *args = data;
+	struct drm_gem_cma_object *cma_obj;
+	int ret;
+
+	cma_obj = drm_gem_cma_create(drm, args->size);
+	if (IS_ERR(cma_obj))
+		goto err_cma_create;
+
+	ret = drm_gem_handle_create(file_priv, &cma_obj->base, &args->handle);
+	if (ret)
+		goto err_handle_create;
+
+	args->offset = cma_obj->base.map_list.hash.key << PAGE_SHIFT;
+
+	drm_gem_object_unreference(&cma_obj->base);
+
+	return 0;
+
+err_handle_create:
+	drm_gem_cma_free_object(&cma_obj->base);
+err_cma_create:
+	return -ENOMEM;
+}
+
 static struct drm_ioctl_desc tegra_drm_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE,
+			tegra_drm_create_ioctl, DRM_UNLOCKED | DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_READ,
+			tegra_drm_ioctl_syncpt_read, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_INCR,
+			tegra_drm_ioctl_syncpt_incr, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_WAIT,
+			tegra_drm_ioctl_syncpt_wait, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_OPEN_CHANNEL,
+			tegra_drm_ioctl_open_channel, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_CLOSE_CHANNEL,
+			tegra_drm_ioctl_close_channel, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_GET_SYNCPOINT,
+			tegra_drm_ioctl_get_syncpoint, DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(TEGRA_DRM_SUBMIT,
+			tegra_drm_ioctl_submit, DRM_UNLOCKED),
 };
 
 static const struct file_operations tegra_drm_fops = {
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index 34cc3a1..06100d7 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -44,17 +44,45 @@ struct tegradrm {
 
 struct tegra_drm_client;
 
+struct tegra_drm_context {
+	struct tegra_drm_client *client;
+	struct host1x_channel *channel;
+	struct list_head list;
+};
+
 struct tegra_drm_client_ops {
 	int (*drm_init)(struct tegra_drm_client *, struct drm_device *);
 	int (*drm_exit)(struct tegra_drm_client *);
+	int (*open_channel)(struct tegra_drm_client *,
+			struct tegra_drm_context *);
+	void (*close_channel)(struct tegra_drm_context *);
+	u32 (*get_syncpoint)(struct tegra_drm_context *, int index);
+	int (*submit)(struct tegra_drm_context *,
+			struct tegra_drm_submit_args *,
+			struct drm_device *,
+			struct drm_file *);
+};
+
+
+struct tegra_drm_fpriv {
+	struct list_head contexts;
 };
 
+static inline struct tegra_drm_fpriv *
+tegra_drm_fpriv(struct drm_file *file_priv)
+{
+	return file_priv ? file_priv->driver_priv : NULL;
+}
+
 struct tegra_drm_client {
 	struct tegradrm *tegradrm;
 	struct device *dev;
 
 	const struct tegra_drm_client_ops *ops;
 
+	u32 class;
+	struct host1x_channel *channel;
+
 	struct list_head list;
 
 };
@@ -222,6 +250,7 @@ extern void tegra_drm_fb_restore(struct drm_device *drm);
 
 extern struct platform_driver tegra_hdmi_driver;
 extern struct platform_driver tegra_dc_driver;
+extern struct platform_driver tegra_gr2d_driver;
 extern struct drm_driver tegra_drm_driver;
 
 #endif /* TEGRA_DRM_H */
diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c
new file mode 100644
index 0000000..8865099
--- /dev/null
+++ b/drivers/gpu/drm/tegra/gr2d.c
@@ -0,0 +1,307 @@
+/*
+ * drivers/video/tegra/host/gr2d/gr2d.c
+ *
+ * Tegra Graphics 2D
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/export.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <drm/tegra_drm.h>
+#include <linux/host1x.h>
+#include "drm.h"
+
+struct gr2d {
+	struct tegra_drm_client client;
+	struct clk *clk;
+	struct host1x_syncpt *syncpt;
+	struct host1x_channel *channel;
+};
+
+static int gr2d_is_addr_reg(struct platform_device *dev, u32 class, u32 reg);
+
+static int gr2d_client_init(struct tegra_drm_client *client,
+		struct drm_device *drm)
+{
+	return 0;
+}
+
+static int gr2d_client_exit(struct tegra_drm_client *client)
+{
+	return 0;
+}
+
+static int gr2d_open_channel(struct tegra_drm_client *client,
+		struct tegra_drm_context *context)
+{
+	struct gr2d *gr2d = dev_get_drvdata(client->dev);
+	context->channel = host1x_channel_get(gr2d->channel);
+
+	if (!context->channel)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void gr2d_close_channel(struct tegra_drm_context *context)
+{
+	host1x_channel_put(context->channel);
+}
+
+static u32 gr2d_get_syncpoint(struct tegra_drm_context *context, int index)
+{
+	struct gr2d *gr2d = dev_get_drvdata(context->client->dev);
+	if (index != 0)
+		return UINT_MAX;
+
+	return host1x_syncpt_id(gr2d->syncpt);
+}
+
+static u32 handle_cma_to_host1x(struct drm_device *drm,
+				struct drm_file *file_priv, u32 gem_handle)
+{
+	struct drm_gem_object *obj;
+	struct drm_gem_cma_object *cma_obj;
+	u32 host1x_handle;
+
+	obj = drm_gem_object_lookup(drm, file_priv, gem_handle);
+	if (!obj)
+		return 0;
+
+	cma_obj = to_drm_gem_cma_obj(obj);
+	host1x_handle = host1x_memmgr_host1x_id(mem_mgr_type_cma, (u32)cma_obj);
+	drm_gem_object_unreference(obj);
+
+	return host1x_handle;
+}
+
+static int gr2d_submit(struct tegra_drm_context *context,
+		struct tegra_drm_submit_args *args,
+		struct drm_device *drm,
+		struct drm_file *file_priv)
+{
+	struct host1x_job *job;
+	int num_cmdbufs = args->num_cmdbufs;
+	int num_relocs = args->num_relocs;
+	int num_waitchks = args->num_waitchks;
+	struct tegra_drm_cmdbuf __user *cmdbufs =
+		(void * __user)(uintptr_t)args->cmdbufs;
+	struct tegra_drm_reloc __user *relocs =
+		(void * __user)(uintptr_t)args->relocs;
+	struct tegra_drm_waitchk __user *waitchks =
+		(void * __user)(uintptr_t)args->waitchks;
+	struct tegra_drm_syncpt_incr syncpt_incr;
+	int err;
+
+	/* We don't yet support other than one syncpt_incr struct per submit */
+	if (args->num_syncpt_incrs != 1)
+		return -EINVAL;
+
+	job = host1x_job_alloc(context->channel,
+			args->num_cmdbufs,
+			args->num_relocs,
+			args->num_waitchks);
+	if (!job)
+		return -ENOMEM;
+
+	job->num_relocs = args->num_relocs;
+	job->num_waitchk = args->num_waitchks;
+	job->clientid = (u32)args->context;
+	job->class = context->client->class;
+	job->serialize = true;
+
+	while (num_cmdbufs) {
+		struct tegra_drm_cmdbuf cmdbuf;
+		err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
+		if (err)
+			goto fail;
+
+		cmdbuf.mem = handle_cma_to_host1x(drm, file_priv, cmdbuf.mem);
+		if (!cmdbuf.mem)
+			goto fail;
+
+		host1x_job_add_gather(job,
+				cmdbuf.mem, cmdbuf.words, cmdbuf.offset);
+		num_cmdbufs--;
+		cmdbufs++;
+	}
+
+	err = copy_from_user(job->relocarray,
+			relocs, sizeof(*relocs) * num_relocs);
+	if (err)
+		goto fail;
+
+	while (num_relocs--) {
+		job->relocarray[num_relocs].cmdbuf_mem =
+			handle_cma_to_host1x(drm, file_priv,
+			job->relocarray[num_relocs].cmdbuf_mem);
+		job->relocarray[num_relocs].target =
+			handle_cma_to_host1x(drm, file_priv,
+			job->relocarray[num_relocs].target);
+
+		if (!job->relocarray[num_relocs].target ||
+			!job->relocarray[num_relocs].cmdbuf_mem)
+			goto fail;
+	}
+
+	err = copy_from_user(job->waitchk,
+			waitchks, sizeof(*waitchks) * num_waitchks);
+	if (err)
+		goto fail;
+
+	err = host1x_job_pin(job, to_platform_device(context->client->dev));
+	if (err)
+		goto fail;
+
+	err = copy_from_user(&syncpt_incr,
+			(void * __user)(uintptr_t)args->syncpt_incrs,
+			sizeof(syncpt_incr));
+	if (err)
+		goto fail;
+
+	job->syncpt_id = syncpt_incr.syncpt_id;
+	job->syncpt_incrs = syncpt_incr.syncpt_incrs;
+	job->timeout = 10000;
+	job->is_addr_reg = gr2d_is_addr_reg;
+	if (args->timeout && args->timeout < 10000)
+		job->timeout = args->timeout;
+
+	err = host1x_channel_submit(job);
+	if (err)
+		goto fail_submit;
+
+	args->fence = job->syncpt_end;
+
+	host1x_job_put(job);
+	return 0;
+
+fail_submit:
+	host1x_job_unpin(job);
+fail:
+	host1x_job_put(job);
+	return err;
+}
+
+static struct tegra_drm_client_ops gr2d_client_ops = {
+	.drm_init = gr2d_client_init,
+	.drm_exit = gr2d_client_exit,
+	.open_channel = gr2d_open_channel,
+	.close_channel = gr2d_close_channel,
+	.get_syncpoint = gr2d_get_syncpoint,
+	.submit = gr2d_submit,
+};
+
+static int gr2d_is_addr_reg(struct platform_device *dev, u32 class, u32 reg)
+{
+	int ret;
+
+	if (class == NV_HOST1X_CLASS_ID)
+		ret = reg == 0x2b;
+	else
+		switch (reg) {
+		case 0x1a:
+		case 0x1b:
+		case 0x26:
+		case 0x2b:
+		case 0x2c:
+		case 0x2d:
+		case 0x31:
+		case 0x32:
+		case 0x48:
+		case 0x49:
+		case 0x4a:
+		case 0x4b:
+		case 0x4c:
+			ret = 1;
+			break;
+		default:
+			ret = 0;
+			break;
+		}
+
+	return ret;
+}
+
+static struct of_device_id gr2d_match[] __devinitdata = {
+	{ .compatible = "nvidia,tegra30-gr2d" },
+	{ .compatible = "nvidia,tegra20-gr2d" },
+	{ },
+};
+
+static int __devinit gr2d_probe(struct platform_device *dev)
+{
+	int err;
+	struct gr2d *gr2d = NULL;
+	struct tegradrm *tegradrm = platform_get_drvdata(dev);
+
+	gr2d = devm_kzalloc(&dev->dev, sizeof(*gr2d), GFP_KERNEL);
+	if (!gr2d)
+		return -ENOMEM;
+
+	gr2d->clk = devm_clk_get(&dev->dev, "gr2d");
+	if (IS_ERR(gr2d->clk)) {
+		dev_err(&dev->dev, "cannot get clock\n");
+		return PTR_ERR(gr2d->clk);
+	}
+
+	err = clk_prepare_enable(gr2d->clk);
+	if (err) {
+		dev_err(&dev->dev, "cannot turn on clock\n");
+		return err;
+	}
+
+	gr2d->channel = host1x_channel_alloc(dev);
+	if (!gr2d->channel)
+		return -ENOMEM;
+
+	gr2d->syncpt = host1x_syncpt_alloc(dev, 0);
+	if (!gr2d->syncpt) {
+		host1x_channel_put(gr2d->channel);
+		return -ENOMEM;
+	}
+
+	gr2d->client.ops = &gr2d_client_ops;
+	gr2d->client.dev = &dev->dev;
+	gr2d->client.class = NV_GRAPHICS_2D_CLASS_ID;
+	gr2d->client.tegradrm = tegradrm;
+
+	err = tegra_drm_register_client(tegradrm, &gr2d->client);
+	if (err)
+		return err;
+
+	platform_set_drvdata(dev, gr2d);
+	return 0;
+}
+
+static int __exit gr2d_remove(struct platform_device *dev)
+{
+	struct gr2d *gr2d = platform_get_drvdata(dev);
+	host1x_syncpt_free(gr2d->syncpt);
+	tegra_drm_unregister_client(gr2d->client.tegradrm, &gr2d->client);
+	return 0;
+}
+
+struct platform_driver tegra_gr2d_driver = {
+	.probe = gr2d_probe,
+	.remove = __exit_p(gr2d_remove),
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "gr2d",
+		.of_match_table = gr2d_match,
+	}
+};
diff --git a/include/drm/tegra_drm.h b/include/drm/tegra_drm.h
index 8632f49..11fb019 100644
--- a/include/drm/tegra_drm.h
+++ b/include/drm/tegra_drm.h
@@ -17,4 +17,115 @@
 #ifndef _TEGRA_DRM_H_
 #define _TEGRA_DRM_H_
 
+struct tegra_gem_create {
+	__u64 size;
+	unsigned int flags;
+	unsigned int handle;
+	unsigned int offset;
+};
+
+struct tegra_gem_invalidate {
+	unsigned int handle;
+};
+
+struct tegra_gem_flush {
+	unsigned int handle;
+};
+
+struct tegra_drm_syncpt_read_args {
+	__u32 id;
+	__u32 value;
+};
+
+struct tegra_drm_syncpt_incr_args {
+	__u32 id;
+	__u32 pad;
+};
+
+struct tegra_drm_syncpt_wait_args {
+	__u32 id;
+	__u32 thresh;
+	__s32 timeout;
+	__u32 value;
+};
+
+#define DRM_TEGRA_NO_TIMEOUT	(-1)
+
+struct tegra_drm_open_channel_args {
+	__u32 class;
+	__u32 pad;
+	__u64 context;
+};
+
+struct tegra_drm_get_channel_param_args {
+	__u64 context;
+	__u32 param;
+	__u32 value;
+};
+
+struct tegra_drm_syncpt_incr {
+	__u32 syncpt_id;
+	__u32 syncpt_incrs;
+};
+
+struct tegra_drm_cmdbuf {
+	__u32 mem;
+	__u32 offset;
+	__u32 words;
+	__u32 pad;
+};
+
+struct tegra_drm_reloc {
+	__u32 cmdbuf_mem;
+	__u32 cmdbuf_offset;
+	__u32 target;
+	__u32 target_offset;
+	__u32 shift;
+	__u32 pad;
+};
+
+struct tegra_drm_waitchk {
+	__u32 mem;
+	__u32 offset;
+	__u32 syncpt_id;
+	__u32 thresh;
+};
+
+struct tegra_drm_submit_args {
+	__u64 context;
+	__u32 num_syncpt_incrs;
+	__u32 num_cmdbufs;
+	__u32 num_relocs;
+	__u32 submit_version;
+	__u32 num_waitchks;
+	__u32 waitchk_mask;
+	__u32 timeout;
+	__u32 pad;
+	__u64 syncpt_incrs;
+	__u64 cmdbufs;
+	__u64 relocs;
+	__u64 waitchks;
+	__u32 fence;		/* Return value */
+
+	__u32 reserved[5];	/* future expansion */
+};
+
+#define DRM_TEGRA_GEM_CREATE		0x00
+#define DRM_TEGRA_DRM_SYNCPT_READ	0x01
+#define DRM_TEGRA_DRM_SYNCPT_INCR	0x02
+#define DRM_TEGRA_DRM_SYNCPT_WAIT	0x03
+#define DRM_TEGRA_DRM_OPEN_CHANNEL	0x04
+#define DRM_TEGRA_DRM_CLOSE_CHANNEL	0x05
+#define DRM_TEGRA_DRM_GET_SYNCPOINT	0x06
+#define DRM_TEGRA_DRM_SUBMIT		0x08
+
+#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct tegra_gem_create)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_READ DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_READ, struct tegra_drm_syncpt_read_args)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_INCR DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_INCR, struct tegra_drm_syncpt_incr_args)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_WAIT, struct tegra_drm_syncpt_wait_args)
+#define DRM_IOCTL_TEGRA_DRM_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_OPEN_CHANNEL, struct tegra_drm_open_channel_args)
+#define DRM_IOCTL_TEGRA_DRM_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_CLOSE_CHANNEL, struct tegra_drm_open_channel_args)
+#define DRM_IOCTL_TEGRA_DRM_GET_SYNCPOINT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_GET_SYNCPOINT, struct tegra_drm_get_channel_param_args)
+#define DRM_IOCTL_TEGRA_DRM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SUBMIT, struct tegra_drm_submit_args)
+
 #endif
-- 
1.7.9.5