Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 1 | /** |
| 2 | * \file i915_ioc32.c |
| 3 | * |
| 4 | * 32-bit ioctl compatibility routines for the i915 DRM. |
| 5 | * |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 6 | * \author Alan Hourihane <alanh@fairlite.demon.co.uk> |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 7 | * |
| 8 | * |
| 9 | * Copyright (C) Paul Mackerras 2005 |
| 10 | * Copyright (C) Alan Hourihane 2005 |
| 11 | * All Rights Reserved. |
| 12 | * |
| 13 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 14 | * copy of this software and associated documentation files (the "Software"), |
| 15 | * to deal in the Software without restriction, including without limitation |
| 16 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 17 | * and/or sell copies of the Software, and to permit persons to whom the |
| 18 | * Software is furnished to do so, subject to the following conditions: |
| 19 | * |
| 20 | * The above copyright notice and this permission notice (including the next |
| 21 | * paragraph) shall be included in all copies or substantial portions of the |
| 22 | * Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 27 | * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 28 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 30 | * IN THE SOFTWARE. |
| 31 | */ |
| 32 | #include <linux/compat.h> |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 33 | |
| 34 | #include "drmP.h" |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 35 | #include "i915_drm.h" |
Ben Widawsky | c43b563 | 2012-04-16 14:07:40 -0700 | [diff] [blame] | 36 | #include "i915_drv.h" |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 37 | |
| 38 | typedef struct _drm_i915_batchbuffer32 { |
| 39 | int start; /* agp offset */ |
| 40 | int used; /* nr bytes in use */ |
| 41 | int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */ |
| 42 | int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */ |
| 43 | int num_cliprects; /* mulitpass with multiple cliprects? */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 44 | u32 cliprects; /* pointer to userspace cliprects */ |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 45 | } drm_i915_batchbuffer32_t; |
| 46 | |
| 47 | static int compat_i915_batchbuffer(struct file *file, unsigned int cmd, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 48 | unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 49 | { |
| 50 | drm_i915_batchbuffer32_t batchbuffer32; |
| 51 | drm_i915_batchbuffer_t __user *batchbuffer; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 52 | |
| 53 | if (copy_from_user |
| 54 | (&batchbuffer32, (void __user *)arg, sizeof(batchbuffer32))) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 55 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 56 | |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 57 | batchbuffer = compat_alloc_user_space(sizeof(*batchbuffer)); |
| 58 | if (!access_ok(VERIFY_WRITE, batchbuffer, sizeof(*batchbuffer)) |
| 59 | || __put_user(batchbuffer32.start, &batchbuffer->start) |
| 60 | || __put_user(batchbuffer32.used, &batchbuffer->used) |
| 61 | || __put_user(batchbuffer32.DR1, &batchbuffer->DR1) |
| 62 | || __put_user(batchbuffer32.DR4, &batchbuffer->DR4) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 63 | || __put_user(batchbuffer32.num_cliprects, |
| 64 | &batchbuffer->num_cliprects) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 65 | || __put_user((int __user *)(unsigned long)batchbuffer32.cliprects, |
| 66 | &batchbuffer->cliprects)) |
| 67 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 68 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 69 | return drm_ioctl(file, DRM_IOCTL_I915_BATCHBUFFER, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 70 | (unsigned long)batchbuffer); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | typedef struct _drm_i915_cmdbuffer32 { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 74 | u32 buf; /* pointer to userspace command buffer */ |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 75 | int sz; /* nr bytes in buf */ |
| 76 | int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */ |
| 77 | int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */ |
| 78 | int num_cliprects; /* mulitpass with multiple cliprects? */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 79 | u32 cliprects; /* pointer to userspace cliprects */ |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 80 | } drm_i915_cmdbuffer32_t; |
| 81 | |
| 82 | static int compat_i915_cmdbuffer(struct file *file, unsigned int cmd, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 83 | unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 84 | { |
| 85 | drm_i915_cmdbuffer32_t cmdbuffer32; |
| 86 | drm_i915_cmdbuffer_t __user *cmdbuffer; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 87 | |
| 88 | if (copy_from_user |
| 89 | (&cmdbuffer32, (void __user *)arg, sizeof(cmdbuffer32))) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 90 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 91 | |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 92 | cmdbuffer = compat_alloc_user_space(sizeof(*cmdbuffer)); |
| 93 | if (!access_ok(VERIFY_WRITE, cmdbuffer, sizeof(*cmdbuffer)) |
| 94 | || __put_user((int __user *)(unsigned long)cmdbuffer32.buf, |
| 95 | &cmdbuffer->buf) |
| 96 | || __put_user(cmdbuffer32.sz, &cmdbuffer->sz) |
| 97 | || __put_user(cmdbuffer32.DR1, &cmdbuffer->DR1) |
| 98 | || __put_user(cmdbuffer32.DR4, &cmdbuffer->DR4) |
| 99 | || __put_user(cmdbuffer32.num_cliprects, &cmdbuffer->num_cliprects) |
| 100 | || __put_user((int __user *)(unsigned long)cmdbuffer32.cliprects, |
| 101 | &cmdbuffer->cliprects)) |
| 102 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 103 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 104 | return drm_ioctl(file, DRM_IOCTL_I915_CMDBUFFER, |
| 105 | (unsigned long)cmdbuffer); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | typedef struct drm_i915_irq_emit32 { |
| 109 | u32 irq_seq; |
| 110 | } drm_i915_irq_emit32_t; |
| 111 | |
| 112 | static int compat_i915_irq_emit(struct file *file, unsigned int cmd, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 113 | unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 114 | { |
| 115 | drm_i915_irq_emit32_t req32; |
| 116 | drm_i915_irq_emit_t __user *request; |
| 117 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 118 | if (copy_from_user(&req32, (void __user *)arg, sizeof(req32))) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 119 | return -EFAULT; |
| 120 | |
| 121 | request = compat_alloc_user_space(sizeof(*request)); |
| 122 | if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) |
| 123 | || __put_user((int __user *)(unsigned long)req32.irq_seq, |
| 124 | &request->irq_seq)) |
| 125 | return -EFAULT; |
| 126 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 127 | return drm_ioctl(file, DRM_IOCTL_I915_IRQ_EMIT, |
| 128 | (unsigned long)request); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 129 | } |
| 130 | typedef struct drm_i915_getparam32 { |
| 131 | int param; |
| 132 | u32 value; |
| 133 | } drm_i915_getparam32_t; |
| 134 | |
| 135 | static int compat_i915_getparam(struct file *file, unsigned int cmd, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 136 | unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 137 | { |
| 138 | drm_i915_getparam32_t req32; |
| 139 | drm_i915_getparam_t __user *request; |
| 140 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 141 | if (copy_from_user(&req32, (void __user *)arg, sizeof(req32))) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 142 | return -EFAULT; |
| 143 | |
| 144 | request = compat_alloc_user_space(sizeof(*request)); |
| 145 | if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) |
| 146 | || __put_user(req32.param, &request->param) |
| 147 | || __put_user((void __user *)(unsigned long)req32.value, |
| 148 | &request->value)) |
| 149 | return -EFAULT; |
| 150 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 151 | return drm_ioctl(file, DRM_IOCTL_I915_GETPARAM, |
| 152 | (unsigned long)request); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | typedef struct drm_i915_mem_alloc32 { |
| 156 | int region; |
| 157 | int alignment; |
| 158 | int size; |
| 159 | u32 region_offset; /* offset from start of fb or agp */ |
| 160 | } drm_i915_mem_alloc32_t; |
| 161 | |
| 162 | static int compat_i915_alloc(struct file *file, unsigned int cmd, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 163 | unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 164 | { |
| 165 | drm_i915_mem_alloc32_t req32; |
| 166 | drm_i915_mem_alloc_t __user *request; |
| 167 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 168 | if (copy_from_user(&req32, (void __user *)arg, sizeof(req32))) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 169 | return -EFAULT; |
| 170 | |
| 171 | request = compat_alloc_user_space(sizeof(*request)); |
| 172 | if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) |
| 173 | || __put_user(req32.region, &request->region) |
| 174 | || __put_user(req32.alignment, &request->alignment) |
| 175 | || __put_user(req32.size, &request->size) |
| 176 | || __put_user((void __user *)(unsigned long)req32.region_offset, |
| 177 | &request->region_offset)) |
| 178 | return -EFAULT; |
| 179 | |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 180 | return drm_ioctl(file, DRM_IOCTL_I915_ALLOC, |
| 181 | (unsigned long)request); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 182 | } |
| 183 | |
Ben Widawsky | c43b563 | 2012-04-16 14:07:40 -0700 | [diff] [blame] | 184 | static drm_ioctl_compat_t *i915_compat_ioctls[] = { |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 185 | [DRM_I915_BATCHBUFFER] = compat_i915_batchbuffer, |
| 186 | [DRM_I915_CMDBUFFER] = compat_i915_cmdbuffer, |
| 187 | [DRM_I915_GETPARAM] = compat_i915_getparam, |
| 188 | [DRM_I915_IRQ_EMIT] = compat_i915_irq_emit, |
| 189 | [DRM_I915_ALLOC] = compat_i915_alloc |
| 190 | }; |
| 191 | |
Ben Widawsky | c43b563 | 2012-04-16 14:07:40 -0700 | [diff] [blame] | 192 | #ifdef CONFIG_COMPAT |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 193 | /** |
| 194 | * Called whenever a 32-bit process running under a 64-bit kernel |
| 195 | * performs an ioctl on /dev/dri/card<n>. |
| 196 | * |
| 197 | * \param filp file pointer. |
| 198 | * \param cmd command. |
| 199 | * \param arg user argument. |
| 200 | * \return zero on success or negative number on failure. |
| 201 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 202 | long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 203 | { |
| 204 | unsigned int nr = DRM_IOCTL_NR(cmd); |
| 205 | drm_ioctl_compat_t *fn = NULL; |
| 206 | int ret; |
| 207 | |
| 208 | if (nr < DRM_COMMAND_BASE) |
| 209 | return drm_compat_ioctl(filp, cmd, arg); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 210 | |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 211 | if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(i915_compat_ioctls)) |
| 212 | fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE]; |
| 213 | |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 214 | if (fn != NULL) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 215 | ret = (*fn) (filp, cmd, arg); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 216 | else |
Arnd Bergmann | ed8b670 | 2009-12-16 22:17:09 +0000 | [diff] [blame] | 217 | ret = drm_ioctl(filp, cmd, arg); |
Dave Airlie | 8ca7c1d | 2005-07-07 21:51:26 +1000 | [diff] [blame] | 218 | |
| 219 | return ret; |
| 220 | } |
Ben Widawsky | c43b563 | 2012-04-16 14:07:40 -0700 | [diff] [blame] | 221 | #endif |