1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2022 VMware, Inc., Palo Alto, CA., USA
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "vmwgfx_drv.h"
29#include "vmwgfx_devcaps.h"
30#include "vmwgfx_kms.h"
31
32#include <drm/vmwgfx_drm.h>
33#include <linux/pci.h>
34
35int vmw_getparam_ioctl(struct drm_device *dev, void *data,
36 struct drm_file *file_priv)
37{
38 struct vmw_private *dev_priv = vmw_priv(dev);
39 struct drm_vmw_getparam_arg *param =
40 (struct drm_vmw_getparam_arg *)data;
41 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
42
43 switch (param->param) {
44 case DRM_VMW_PARAM_NUM_STREAMS:
45 param->value = vmw_overlay_num_overlays(dev_priv);
46 break;
47 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
48 param->value = vmw_overlay_num_free_overlays(dev_priv);
49 break;
50 case DRM_VMW_PARAM_3D:
51 param->value = vmw_supports_3d(dev_priv) ? 1 : 0;
52 break;
53 case DRM_VMW_PARAM_HW_CAPS:
54 param->value = dev_priv->capabilities;
55 break;
56 case DRM_VMW_PARAM_HW_CAPS2:
57 param->value = dev_priv->capabilities2;
58 break;
59 case DRM_VMW_PARAM_FIFO_CAPS:
60 param->value = vmw_fifo_caps(dev_priv);
61 break;
62 case DRM_VMW_PARAM_MAX_FB_SIZE:
63 param->value = dev_priv->max_primary_mem;
64 break;
65 case DRM_VMW_PARAM_FIFO_HW_VERSION:
66 {
67 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
68 param->value = SVGA3D_HWVERSION_WS8_B1;
69 else
70 param->value = vmw_fifo_mem_read(
71 vmw: dev_priv,
72 fifo_reg: ((vmw_fifo_caps(dev_priv) &
73 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
74 SVGA_FIFO_3D_HWVERSION_REVISED :
75 SVGA_FIFO_3D_HWVERSION));
76 break;
77 }
78 case DRM_VMW_PARAM_MAX_SURF_MEMORY:
79 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
80 !vmw_fp->gb_aware)
81 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
82 else
83 param->value = dev_priv->memory_size;
84 break;
85 case DRM_VMW_PARAM_3D_CAPS_SIZE:
86 param->value = vmw_devcaps_size(vmw: dev_priv, gb_aware: vmw_fp->gb_aware);
87 break;
88 case DRM_VMW_PARAM_MAX_MOB_MEMORY:
89 vmw_fp->gb_aware = true;
90 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
91 break;
92 case DRM_VMW_PARAM_MAX_MOB_SIZE:
93 param->value = dev_priv->max_mob_size;
94 break;
95 case DRM_VMW_PARAM_SCREEN_TARGET:
96 param->value =
97 (dev_priv->active_display_unit == vmw_du_screen_target);
98 break;
99 case DRM_VMW_PARAM_DX:
100 param->value = has_sm4_context(dev_priv);
101 break;
102 case DRM_VMW_PARAM_SM4_1:
103 param->value = has_sm4_1_context(dev_priv);
104 break;
105 case DRM_VMW_PARAM_SM5:
106 param->value = has_sm5_context(dev_priv);
107 break;
108 case DRM_VMW_PARAM_GL43:
109 param->value = has_gl43_context(dev_priv);
110 break;
111 case DRM_VMW_PARAM_DEVICE_ID:
112 param->value = to_pci_dev(dev_priv->drm.dev)->device;
113 break;
114 default:
115 return -EINVAL;
116 }
117
118 return 0;
119}
120
121
122int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
123 struct drm_file *file_priv)
124{
125 struct drm_vmw_get_3d_cap_arg *arg =
126 (struct drm_vmw_get_3d_cap_arg *) data;
127 struct vmw_private *dev_priv = vmw_priv(dev);
128 uint32_t size;
129 void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
130 void *bounce = NULL;
131 int ret;
132 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
133
134 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
135 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n");
136 return -EINVAL;
137 }
138
139 size = vmw_devcaps_size(vmw: dev_priv, gb_aware: vmw_fp->gb_aware);
140 if (unlikely(size == 0)) {
141 DRM_ERROR("Failed to figure out the devcaps size (no 3D).\n");
142 return -ENOMEM;
143 }
144
145 if (arg->max_size < size)
146 size = arg->max_size;
147
148 bounce = vzalloc(size);
149 if (unlikely(bounce == NULL)) {
150 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
151 return -ENOMEM;
152 }
153
154 ret = vmw_devcaps_copy(vmw: dev_priv, gb_aware: vmw_fp->gb_aware, dst: bounce, dst_size: size);
155 if (unlikely (ret != 0))
156 goto out_err;
157
158 ret = copy_to_user(to: buffer, from: bounce, n: size);
159 if (ret)
160 ret = -EFAULT;
161out_err:
162 vfree(addr: bounce);
163
164 if (unlikely(ret != 0))
165 DRM_ERROR("Failed to report 3D caps info.\n");
166
167 return ret;
168}
169
170int vmw_present_ioctl(struct drm_device *dev, void *data,
171 struct drm_file *file_priv)
172{
173 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
174 struct vmw_private *dev_priv = vmw_priv(dev);
175 struct drm_vmw_present_arg *arg =
176 (struct drm_vmw_present_arg *)data;
177 struct vmw_surface *surface;
178 struct drm_vmw_rect __user *clips_ptr;
179 struct drm_vmw_rect *clips = NULL;
180 struct drm_framebuffer *fb;
181 struct vmw_framebuffer *vfb;
182 struct vmw_resource *res;
183 uint32_t num_clips;
184 int ret;
185
186 num_clips = arg->num_clips;
187 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
188
189 if (unlikely(num_clips == 0))
190 return 0;
191
192 if (clips_ptr == NULL) {
193 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n");
194 ret = -EINVAL;
195 goto out_clips;
196 }
197
198 clips = kcalloc(n: num_clips, size: sizeof(*clips), GFP_KERNEL);
199 if (clips == NULL) {
200 DRM_ERROR("Failed to allocate clip rect list.\n");
201 ret = -ENOMEM;
202 goto out_clips;
203 }
204
205 ret = copy_from_user(to: clips, from: clips_ptr, n: num_clips * sizeof(*clips));
206 if (ret) {
207 DRM_ERROR("Failed to copy clip rects from userspace.\n");
208 ret = -EFAULT;
209 goto out_no_copy;
210 }
211
212 drm_modeset_lock_all(dev);
213
214 fb = drm_framebuffer_lookup(dev, file_priv, id: arg->fb_id);
215 if (!fb) {
216 VMW_DEBUG_USER("Invalid framebuffer id.\n");
217 ret = -ENOENT;
218 goto out_no_fb;
219 }
220 vfb = vmw_framebuffer_to_vfb(fb);
221
222 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle: arg->sid,
223 converter: user_surface_converter,
224 p_res: &res);
225 if (ret)
226 goto out_no_surface;
227
228 surface = vmw_res_to_srf(res);
229 ret = vmw_kms_present(dev_priv, file_priv,
230 vfb, surface, sid: arg->sid,
231 destX: arg->dest_x, destY: arg->dest_y,
232 clips, num_clips);
233
234 /* vmw_user_surface_lookup takes one ref so does new_fb */
235 vmw_surface_unreference(srf: &surface);
236
237out_no_surface:
238 drm_framebuffer_put(fb);
239out_no_fb:
240 drm_modeset_unlock_all(dev);
241out_no_copy:
242 kfree(objp: clips);
243out_clips:
244 return ret;
245}
246
247int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
248 struct drm_file *file_priv)
249{
250 struct vmw_private *dev_priv = vmw_priv(dev);
251 struct drm_vmw_present_readback_arg *arg =
252 (struct drm_vmw_present_readback_arg *)data;
253 struct drm_vmw_fence_rep __user *user_fence_rep =
254 (struct drm_vmw_fence_rep __user *)
255 (unsigned long)arg->fence_rep;
256 struct drm_vmw_rect __user *clips_ptr;
257 struct drm_vmw_rect *clips = NULL;
258 struct drm_framebuffer *fb;
259 struct vmw_framebuffer *vfb;
260 uint32_t num_clips;
261 int ret;
262
263 num_clips = arg->num_clips;
264 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
265
266 if (unlikely(num_clips == 0))
267 return 0;
268
269 if (clips_ptr == NULL) {
270 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n");
271 ret = -EINVAL;
272 goto out_clips;
273 }
274
275 clips = kcalloc(n: num_clips, size: sizeof(*clips), GFP_KERNEL);
276 if (clips == NULL) {
277 DRM_ERROR("Failed to allocate clip rect list.\n");
278 ret = -ENOMEM;
279 goto out_clips;
280 }
281
282 ret = copy_from_user(to: clips, from: clips_ptr, n: num_clips * sizeof(*clips));
283 if (ret) {
284 DRM_ERROR("Failed to copy clip rects from userspace.\n");
285 ret = -EFAULT;
286 goto out_no_copy;
287 }
288
289 drm_modeset_lock_all(dev);
290
291 fb = drm_framebuffer_lookup(dev, file_priv, id: arg->fb_id);
292 if (!fb) {
293 VMW_DEBUG_USER("Invalid framebuffer id.\n");
294 ret = -ENOENT;
295 goto out_no_fb;
296 }
297
298 vfb = vmw_framebuffer_to_vfb(fb);
299 if (!vfb->bo) {
300 VMW_DEBUG_USER("Framebuffer not buffer backed.\n");
301 ret = -EINVAL;
302 goto out_no_ttm_lock;
303 }
304
305 ret = vmw_kms_readback(dev_priv, file_priv,
306 vfb, user_fence_rep,
307 vclips: clips, num_clips);
308
309out_no_ttm_lock:
310 drm_framebuffer_put(fb);
311out_no_fb:
312 drm_modeset_unlock_all(dev);
313out_no_copy:
314 kfree(objp: clips);
315out_clips:
316 return ret;
317}
318

source code of linux/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c