4 * 32-bit ioctl compatibility routines for the MGA DRM.
9 * Copyright (C) Paul Mackerras 2005
10 * Copyright (C) Egbert Eich 2003,2004
11 * Copyright (C) Dave Airlie 2005
12 * All Rights Reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice (including the next
22 * paragraph) shall be included in all copies or substantial portions of the
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
27 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
28 * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
29 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
30 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
34 #include <linux/compat.h>
38 typedef struct drm32_mga_init {
40 u32 sarea_priv_offset;
45 unsigned int front_offset, front_pitch;
46 unsigned int back_offset, back_pitch;
47 unsigned int depth_cpp;
48 unsigned int depth_offset, depth_pitch;
49 unsigned int texture_offset[MGA_NR_TEX_HEAPS];
50 unsigned int texture_size[MGA_NR_TEX_HEAPS];
59 static int compat_mga_init(struct file *file, unsigned int cmd,
62 drm_mga_init32_t init32;
65 if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
68 init.func = init32.func;
69 init.sarea_priv_offset = init32.sarea_priv_offset;
70 memcpy(&init.chipset, &init32.chipset,
71 offsetof(drm_mga_init_t, fb_offset) -
72 offsetof(drm_mga_init_t, chipset));
73 init.fb_offset = init32.fb_offset;
74 init.mmio_offset = init32.mmio_offset;
75 init.status_offset = init32.status_offset;
76 init.warp_offset = init32.warp_offset;
77 init.primary_offset = init32.primary_offset;
78 init.buffers_offset = init32.buffers_offset;
80 return drm_ioctl_kernel(file, mga_dma_init, &init,
81 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
84 typedef struct drm_mga_getparam32 {
87 } drm_mga_getparam32_t;
89 static int compat_mga_getparam(struct file *file, unsigned int cmd,
92 drm_mga_getparam32_t getparam32;
93 drm_mga_getparam_t getparam;
95 if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32)))
98 getparam.param = getparam32.param;
99 getparam.value = compat_ptr(getparam32.value);
100 return drm_ioctl_kernel(file, mga_getparam, &getparam, DRM_AUTH);
103 typedef struct drm_mga_drm_bootstrap32 {
107 u32 secondary_bin_count;
108 u32 secondary_bin_size;
111 } drm_mga_dma_bootstrap32_t;
113 static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
116 drm_mga_dma_bootstrap32_t dma_bootstrap32;
117 drm_mga_dma_bootstrap_t dma_bootstrap;
120 if (copy_from_user(&dma_bootstrap32, (void __user *)arg,
121 sizeof(dma_bootstrap32)))
124 dma_bootstrap.texture_handle = dma_bootstrap32.texture_handle;
125 dma_bootstrap.texture_size = dma_bootstrap32.texture_size;
126 dma_bootstrap.primary_size = dma_bootstrap32.primary_size;
127 dma_bootstrap.secondary_bin_count = dma_bootstrap32.secondary_bin_count;
128 dma_bootstrap.secondary_bin_size = dma_bootstrap32.secondary_bin_size;
129 dma_bootstrap.agp_mode = dma_bootstrap32.agp_mode;
130 dma_bootstrap.agp_size = dma_bootstrap32.agp_size;
132 err = drm_ioctl_kernel(file, mga_dma_bootstrap, &dma_bootstrap,
133 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
137 dma_bootstrap32.texture_handle = dma_bootstrap.texture_handle;
138 dma_bootstrap32.texture_size = dma_bootstrap.texture_size;
139 dma_bootstrap32.primary_size = dma_bootstrap.primary_size;
140 dma_bootstrap32.secondary_bin_count = dma_bootstrap.secondary_bin_count;
141 dma_bootstrap32.secondary_bin_size = dma_bootstrap.secondary_bin_size;
142 dma_bootstrap32.agp_mode = dma_bootstrap.agp_mode;
143 dma_bootstrap32.agp_size = dma_bootstrap.agp_size;
144 if (copy_to_user((void __user *)arg, &dma_bootstrap32,
145 sizeof(dma_bootstrap32)))
152 drm_ioctl_compat_t *fn;
154 } mga_compat_ioctls[] = {
155 #define DRM_IOCTL32_DEF(n, f)[DRM_##n] = {.fn = f, .name = #n}
156 DRM_IOCTL32_DEF(MGA_INIT, compat_mga_init),
157 DRM_IOCTL32_DEF(MGA_GETPARAM, compat_mga_getparam),
158 DRM_IOCTL32_DEF(MGA_DMA_BOOTSTRAP, compat_mga_dma_bootstrap),
162 * Called whenever a 32-bit process running under a 64-bit kernel
163 * performs an ioctl on /dev/dri/card<n>.
165 * \param filp file pointer.
166 * \param cmd command.
167 * \param arg user argument.
168 * \return zero on success or negative number on failure.
170 long mga_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
172 unsigned int nr = DRM_IOCTL_NR(cmd);
173 struct drm_file *file_priv = filp->private_data;
174 drm_ioctl_compat_t *fn = NULL;
177 if (nr < DRM_COMMAND_BASE)
178 return drm_compat_ioctl(filp, cmd, arg);
180 if (nr >= DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls))
181 return drm_ioctl(filp, cmd, arg);
183 fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE].fn;
185 return drm_ioctl(filp, cmd, arg);
187 DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
188 task_pid_nr(current),
189 (long)old_encode_dev(file_priv->minor->kdev->devt),
190 file_priv->authenticated,
191 mga_compat_ioctls[nr - DRM_COMMAND_BASE].name);
192 ret = (*fn) (filp, cmd, arg);
194 DRM_DEBUG("ret = %d\n", ret);