Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 198 insertions, 0 deletions

diff --git a/drivers/gpu/drm/r128/r128_ioc32.c b/drivers/gpu/drm/r128/r128_ioc32.c
new file mode 100644
index 000000000..6589f9e03
--- /dev/null
+++ b/drivers/gpu/drm/r128/r128_ioc32.c
@@ -0,0 +1,198 @@
+/**
+ * \file r128_ioc32.c
+ *
+ * 32-bit ioctl compatibility routines for the R128 DRM.
+ *
+ * \author Dave Airlie <airlied@linux.ie> with code from patches by Egbert Eich
+ *
+ * Copyright (C) Paul Mackerras 2005
+ * Copyright (C) Egbert Eich 2003,2004
+ * Copyright (C) Dave Airlie 2005
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include <linux/compat.h>
+
+#include <drm/drmP.h>
+#include <drm/r128_drm.h>
+#include "r128_drv.h"
+
+typedef struct drm_r128_init32 {
+	int func;
+	unsigned int sarea_priv_offset;
+	int is_pci;
+	int cce_mode;
+	int cce_secure;
+	int ring_size;
+	int usec_timeout;
+
+	unsigned int fb_bpp;
+	unsigned int front_offset, front_pitch;
+	unsigned int back_offset, back_pitch;
+	unsigned int depth_bpp;
+	unsigned int depth_offset, depth_pitch;
+	unsigned int span_offset;
+
+	unsigned int fb_offset;
+	unsigned int mmio_offset;
+	unsigned int ring_offset;
+	unsigned int ring_rptr_offset;
+	unsigned int buffers_offset;
+	unsigned int agp_textures_offset;
+} drm_r128_init32_t;
+
+static int compat_r128_init(struct file *file, unsigned int cmd,
+			    unsigned long arg)
+{
+	drm_r128_init32_t init32;
+	drm_r128_init_t init;
+
+	if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
+		return -EFAULT;
+
+	init.func = init32.func;
+	init.sarea_priv_offset = init32.sarea_priv_offset;
+	init.is_pci = init32.is_pci;
+	init.cce_mode = init32.cce_mode;
+	init.cce_secure = init32.cce_secure;
+	init.ring_size = init32.ring_size;
+	init.usec_timeout = init32.usec_timeout;
+	init.fb_bpp = init32.fb_bpp;
+	init.front_offset = init32.front_offset;
+	init.front_pitch = init32.front_pitch;
+	init.back_offset = init32.back_offset;
+	init.back_pitch = init32.back_pitch;
+	init.depth_bpp = init32.depth_bpp;
+	init.depth_offset = init32.depth_offset;
+	init.depth_pitch = init32.depth_pitch;
+	init.span_offset = init32.span_offset;
+	init.fb_offset = init32.fb_offset;
+	init.mmio_offset = init32.mmio_offset;
+	init.ring_offset = init32.ring_offset;
+	init.ring_rptr_offset = init32.ring_rptr_offset;
+	init.buffers_offset = init32.buffers_offset;
+	init.agp_textures_offset = init32.agp_textures_offset;
+
+	return drm_ioctl_kernel(file, r128_cce_init, &init,
+			DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
+}
+
+typedef struct drm_r128_depth32 {
+	int func;
+	int n;
+	u32 x;
+	u32 y;
+	u32 buffer;
+	u32 mask;
+} drm_r128_depth32_t;
+
+static int compat_r128_depth(struct file *file, unsigned int cmd,
+			     unsigned long arg)
+{
+	drm_r128_depth32_t depth32;
+	drm_r128_depth_t depth;
+
+	if (copy_from_user(&depth32, (void __user *)arg, sizeof(depth32)))
+		return -EFAULT;
+
+	depth.func = depth32.func;
+	depth.n = depth32.n;
+	depth.x = compat_ptr(depth32.x);
+	depth.y = compat_ptr(depth32.y);
+	depth.buffer = compat_ptr(depth32.buffer);
+	depth.mask = compat_ptr(depth32.mask);
+
+	return drm_ioctl_kernel(file, r128_cce_depth, &depth, DRM_AUTH);
+}
+
+typedef struct drm_r128_stipple32 {
+	u32 mask;
+} drm_r128_stipple32_t;
+
+static int compat_r128_stipple(struct file *file, unsigned int cmd,
+			       unsigned long arg)
+{
+	drm_r128_stipple32_t stipple32;
+	drm_r128_stipple_t stipple;
+
+	if (copy_from_user(&stipple32, (void __user *)arg, sizeof(stipple32)))
+		return -EFAULT;
+
+	stipple.mask = compat_ptr(stipple32.mask);
+
+	return drm_ioctl_kernel(file, r128_cce_stipple, &stipple, DRM_AUTH);
+}
+
+typedef struct drm_r128_getparam32 {
+	int param;
+	u32 value;
+} drm_r128_getparam32_t;
+
+static int compat_r128_getparam(struct file *file, unsigned int cmd,
+				unsigned long arg)
+{
+	drm_r128_getparam32_t getparam32;
+	drm_r128_getparam_t getparam;
+
+	if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32)))
+		return -EFAULT;
+
+	getparam.param = getparam32.param;
+	getparam.value = compat_ptr(getparam32.value);
+
+	return drm_ioctl_kernel(file, r128_getparam, &getparam, DRM_AUTH);
+}
+
+drm_ioctl_compat_t *r128_compat_ioctls[] = {
+	[DRM_R128_INIT] = compat_r128_init,
+	[DRM_R128_DEPTH] = compat_r128_depth,
+	[DRM_R128_STIPPLE] = compat_r128_stipple,
+	[DRM_R128_GETPARAM] = compat_r128_getparam,
+};
+
+/**
+ * Called whenever a 32-bit process running under a 64-bit kernel
+ * performs an ioctl on /dev/dri/card<n>.
+ *
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument.
+ * \return zero on success or negative number on failure.
+ */
+long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	unsigned int nr = DRM_IOCTL_NR(cmd);
+	drm_ioctl_compat_t *fn = NULL;
+	int ret;
+
+	if (nr < DRM_COMMAND_BASE)
+		return drm_compat_ioctl(filp, cmd, arg);
+
+	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(r128_compat_ioctls))
+		fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
+
+	if (fn != NULL)
+		ret = (*fn) (filp, cmd, arg);
+	else
+		ret = drm_ioctl(filp, cmd, arg);
+
+	return ret;
+}