drm/tegra: Add gr2d device

Add client driver for 2D device, and IOCTLs to pass work to host1x
channel for 2D.

Also adds functions that can be called to access sync points from
DRM.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

2 files changed, 137 insertions, 0 deletions

diff --git a/include/uapi/drm/Kbuild b/include/uapi/drm/Kbuild
index a042a957296..119487e05e6 100644
--- a/include/uapi/drm/Kbuild
+++ b/include/uapi/drm/Kbuild
@@ -13,5 +13,6 @@ header-y += r128_drm.h
 header-y += radeon_drm.h
 header-y += savage_drm.h
 header-y += sis_drm.h
+header-y += tegra_drm.h
 header-y += via_drm.h
 header-y += vmwgfx_drm.h
diff --git a/include/uapi/drm/tegra_drm.h b/include/uapi/drm/tegra_drm.h
new file mode 100644
index 00000000000..6e132a2f742
--- /dev/null
+++ b/include/uapi/drm/tegra_drm.h
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2012-2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * 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/>.
+ */
+
+#ifndef _UAPI_TEGRA_DRM_H_
+#define _UAPI_TEGRA_DRM_H_
+
+struct drm_tegra_gem_create {
+	__u64 size;
+	__u32 flags;
+	__u32 handle;
+};
+
+struct drm_tegra_gem_mmap {
+	__u32 handle;
+	__u32 offset;
+};
+
+struct drm_tegra_syncpt_read {
+	__u32 id;
+	__u32 value;
+};
+
+struct drm_tegra_syncpt_incr {
+	__u32 id;
+	__u32 pad;
+};
+
+struct drm_tegra_syncpt_wait {
+	__u32 id;
+	__u32 thresh;
+	__u32 timeout;
+	__u32 value;
+};
+
+#define DRM_TEGRA_NO_TIMEOUT	(0xffffffff)
+
+struct drm_tegra_open_channel {
+	__u32 client;
+	__u32 pad;
+	__u64 context;
+};
+
+struct drm_tegra_close_channel {
+	__u64 context;
+};
+
+struct drm_tegra_get_syncpt {
+	__u64 context;
+	__u32 index;
+	__u32 id;
+};
+
+struct drm_tegra_syncpt {
+	__u32 id;
+	__u32 incrs;
+};
+
+struct drm_tegra_cmdbuf {
+	__u32 handle;
+	__u32 offset;
+	__u32 words;
+	__u32 pad;
+};
+
+struct drm_tegra_reloc {
+	struct {
+		__u32 handle;
+		__u32 offset;
+	} cmdbuf;
+	struct {
+		__u32 handle;
+		__u32 offset;
+	} target;
+	__u32 shift;
+	__u32 pad;
+};
+
+struct drm_tegra_waitchk {
+	__u32 handle;
+	__u32 offset;
+	__u32 syncpt;
+	__u32 thresh;
+};
+
+struct drm_tegra_submit {
+	__u64 context;
+	__u32 num_syncpts;
+	__u32 num_cmdbufs;
+	__u32 num_relocs;
+	__u32 num_waitchks;
+	__u32 waitchk_mask;
+	__u32 timeout;
+	__u32 pad;
+	__u64 syncpts;
+	__u64 cmdbufs;
+	__u64 relocs;
+	__u64 waitchks;
+	__u32 fence;		/* Return value */
+
+	__u32 reserved[5];	/* future expansion */
+};
+
+#define DRM_TEGRA_GEM_CREATE	0x00
+#define DRM_TEGRA_GEM_MMAP	0x01
+#define DRM_TEGRA_SYNCPT_READ	0x02
+#define DRM_TEGRA_SYNCPT_INCR	0x03
+#define DRM_TEGRA_SYNCPT_WAIT	0x04
+#define DRM_TEGRA_OPEN_CHANNEL	0x05
+#define DRM_TEGRA_CLOSE_CHANNEL	0x06
+#define DRM_TEGRA_GET_SYNCPT	0x07
+#define DRM_TEGRA_SUBMIT	0x08
+
+#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
+#define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
+#define DRM_IOCTL_TEGRA_SYNCPT_READ DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_READ, struct drm_tegra_syncpt_read)
+#define DRM_IOCTL_TEGRA_SYNCPT_INCR DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_INCR, struct drm_tegra_syncpt_incr)
+#define DRM_IOCTL_TEGRA_SYNCPT_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_WAIT, struct drm_tegra_syncpt_wait)
+#define DRM_IOCTL_TEGRA_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_OPEN_CHANNEL, struct drm_tegra_open_channel)
+#define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_open_channel)
+#define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
+#define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
+
+#endif