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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 dev_priv,
72 ((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(dev_priv, 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(dev_priv, 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(dev_priv, vmw_fp->gb_aware, bounce, size);
155 if (unlikely (ret != 0))
156 goto out_err;
157
158 ret = copy_to_user(buffer, bounce, size);
159 if (ret)
160 ret = -EFAULT;
161out_err:
162 vfree(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(num_clips, 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(clips, clips_ptr, 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, 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, arg->sid,
223 user_surface_converter,
224 &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, arg->sid,
231 arg->dest_x, arg->dest_y,
232 clips, num_clips);
233
234 /* vmw_user_surface_lookup takes one ref so does new_fb */
235 vmw_surface_unreference(&surface);
236
237out_no_surface:
238 drm_framebuffer_put(fb);
239out_no_fb:
240 drm_modeset_unlock_all(dev);
241out_no_copy:
242 kfree(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(num_clips, 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(clips, clips_ptr, 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, 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 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(clips);
315out_clips:
316 return ret;
317}
1/**************************************************************************
2 *
3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
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 <drm/vmwgfx_drm.h>
30#include "vmwgfx_kms.h"
31#include "device_include/svga3d_caps.h"
32
33struct svga_3d_compat_cap {
34 SVGA3dCapsRecordHeader header;
35 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX];
36};
37
38int vmw_getparam_ioctl(struct drm_device *dev, void *data,
39 struct drm_file *file_priv)
40{
41 struct vmw_private *dev_priv = vmw_priv(dev);
42 struct drm_vmw_getparam_arg *param =
43 (struct drm_vmw_getparam_arg *)data;
44 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
45
46 switch (param->param) {
47 case DRM_VMW_PARAM_NUM_STREAMS:
48 param->value = vmw_overlay_num_overlays(dev_priv);
49 break;
50 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
51 param->value = vmw_overlay_num_free_overlays(dev_priv);
52 break;
53 case DRM_VMW_PARAM_3D:
54 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
55 break;
56 case DRM_VMW_PARAM_HW_CAPS:
57 param->value = dev_priv->capabilities;
58 break;
59 case DRM_VMW_PARAM_FIFO_CAPS:
60 param->value = dev_priv->fifo.capabilities;
61 break;
62 case DRM_VMW_PARAM_MAX_FB_SIZE:
63 param->value = dev_priv->prim_bb_mem;
64 break;
65 case DRM_VMW_PARAM_FIFO_HW_VERSION:
66 {
67 u32 *fifo_mem = dev_priv->mmio_virt;
68 const struct vmw_fifo_state *fifo = &dev_priv->fifo;
69
70 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
71 param->value = SVGA3D_HWVERSION_WS8_B1;
72 break;
73 }
74
75 param->value =
76 vmw_mmio_read(fifo_mem +
77 ((fifo->capabilities &
78 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
79 SVGA_FIFO_3D_HWVERSION_REVISED :
80 SVGA_FIFO_3D_HWVERSION));
81 break;
82 }
83 case DRM_VMW_PARAM_MAX_SURF_MEMORY:
84 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
85 !vmw_fp->gb_aware)
86 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
87 else
88 param->value = dev_priv->memory_size;
89 break;
90 case DRM_VMW_PARAM_3D_CAPS_SIZE:
91 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
92 vmw_fp->gb_aware)
93 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
94 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
95 param->value = sizeof(struct svga_3d_compat_cap) +
96 sizeof(uint32_t);
97 else
98 param->value = (SVGA_FIFO_3D_CAPS_LAST -
99 SVGA_FIFO_3D_CAPS + 1) *
100 sizeof(uint32_t);
101 break;
102 case DRM_VMW_PARAM_MAX_MOB_MEMORY:
103 vmw_fp->gb_aware = true;
104 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
105 break;
106 case DRM_VMW_PARAM_MAX_MOB_SIZE:
107 param->value = dev_priv->max_mob_size;
108 break;
109 case DRM_VMW_PARAM_SCREEN_TARGET:
110 param->value =
111 (dev_priv->active_display_unit == vmw_du_screen_target);
112 break;
113 case DRM_VMW_PARAM_DX:
114 param->value = dev_priv->has_dx;
115 break;
116 default:
117 DRM_ERROR("Illegal vmwgfx get param request: %d\n",
118 param->param);
119 return -EINVAL;
120 }
121
122 return 0;
123}
124
125static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value)
126{
127 /* If the header is updated, update the format test as well! */
128 BUILD_BUG_ON(SVGA3D_DEVCAP_DXFMT_BC5_UNORM + 1 != SVGA3D_DEVCAP_MAX);
129
130 if (cap >= SVGA3D_DEVCAP_DXFMT_X8R8G8B8 &&
131 cap <= SVGA3D_DEVCAP_DXFMT_BC5_UNORM)
132 fmt_value &= ~(SVGADX_DXFMT_MULTISAMPLE_2 |
133 SVGADX_DXFMT_MULTISAMPLE_4 |
134 SVGADX_DXFMT_MULTISAMPLE_8);
135 else if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES)
136 return 0;
137
138 return fmt_value;
139}
140
141static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
142 size_t size)
143{
144 struct svga_3d_compat_cap *compat_cap =
145 (struct svga_3d_compat_cap *) bounce;
146 unsigned int i;
147 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
148 unsigned int max_size;
149
150 if (size < pair_offset)
151 return -EINVAL;
152
153 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair);
154
155 if (max_size > SVGA3D_DEVCAP_MAX)
156 max_size = SVGA3D_DEVCAP_MAX;
157
158 compat_cap->header.length =
159 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32);
160 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS;
161
162 spin_lock(&dev_priv->cap_lock);
163 for (i = 0; i < max_size; ++i) {
164 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
165 compat_cap->pairs[i][0] = i;
166 compat_cap->pairs[i][1] = vmw_mask_multisample
167 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
168 }
169 spin_unlock(&dev_priv->cap_lock);
170
171 return 0;
172}
173
174
175int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
176 struct drm_file *file_priv)
177{
178 struct drm_vmw_get_3d_cap_arg *arg =
179 (struct drm_vmw_get_3d_cap_arg *) data;
180 struct vmw_private *dev_priv = vmw_priv(dev);
181 uint32_t size;
182 u32 *fifo_mem;
183 void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
184 void *bounce;
185 int ret;
186 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
187 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
188
189 if (unlikely(arg->pad64 != 0)) {
190 DRM_ERROR("Illegal GET_3D_CAP argument.\n");
191 return -EINVAL;
192 }
193
194 if (gb_objects && vmw_fp->gb_aware)
195 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
196 else if (gb_objects)
197 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t);
198 else
199 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
200 sizeof(uint32_t);
201
202 if (arg->max_size < size)
203 size = arg->max_size;
204
205 bounce = vzalloc(size);
206 if (unlikely(bounce == NULL)) {
207 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
208 return -ENOMEM;
209 }
210
211 if (gb_objects && vmw_fp->gb_aware) {
212 int i, num;
213 uint32_t *bounce32 = (uint32_t *) bounce;
214
215 num = size / sizeof(uint32_t);
216 if (num > SVGA3D_DEVCAP_MAX)
217 num = SVGA3D_DEVCAP_MAX;
218
219 spin_lock(&dev_priv->cap_lock);
220 for (i = 0; i < num; ++i) {
221 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
222 *bounce32++ = vmw_mask_multisample
223 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
224 }
225 spin_unlock(&dev_priv->cap_lock);
226 } else if (gb_objects) {
227 ret = vmw_fill_compat_cap(dev_priv, bounce, size);
228 if (unlikely(ret != 0))
229 goto out_err;
230 } else {
231 fifo_mem = dev_priv->mmio_virt;
232 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
233 }
234
235 ret = copy_to_user(buffer, bounce, size);
236 if (ret)
237 ret = -EFAULT;
238out_err:
239 vfree(bounce);
240
241 if (unlikely(ret != 0))
242 DRM_ERROR("Failed to report 3D caps info.\n");
243
244 return ret;
245}
246
247int vmw_present_ioctl(struct drm_device *dev, void *data,
248 struct drm_file *file_priv)
249{
250 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
251 struct vmw_private *dev_priv = vmw_priv(dev);
252 struct drm_vmw_present_arg *arg =
253 (struct drm_vmw_present_arg *)data;
254 struct vmw_surface *surface;
255 struct drm_vmw_rect __user *clips_ptr;
256 struct drm_vmw_rect *clips = NULL;
257 struct drm_framebuffer *fb;
258 struct vmw_framebuffer *vfb;
259 struct vmw_resource *res;
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 DRM_ERROR("Variable clips_ptr must be specified.\n");
271 ret = -EINVAL;
272 goto out_clips;
273 }
274
275 clips = kcalloc(num_clips, 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(clips, clips_ptr, 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, arg->fb_id);
292 if (!fb) {
293 DRM_ERROR("Invalid framebuffer id.\n");
294 ret = -ENOENT;
295 goto out_no_fb;
296 }
297 vfb = vmw_framebuffer_to_vfb(fb);
298
299 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
300 if (unlikely(ret != 0))
301 goto out_no_ttm_lock;
302
303 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
304 user_surface_converter,
305 &res);
306 if (ret)
307 goto out_no_surface;
308
309 surface = vmw_res_to_srf(res);
310 ret = vmw_kms_present(dev_priv, file_priv,
311 vfb, surface, arg->sid,
312 arg->dest_x, arg->dest_y,
313 clips, num_clips);
314
315 /* vmw_user_surface_lookup takes one ref so does new_fb */
316 vmw_surface_unreference(&surface);
317
318out_no_surface:
319 ttm_read_unlock(&dev_priv->reservation_sem);
320out_no_ttm_lock:
321 drm_framebuffer_unreference(fb);
322out_no_fb:
323 drm_modeset_unlock_all(dev);
324out_no_copy:
325 kfree(clips);
326out_clips:
327 return ret;
328}
329
330int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
331 struct drm_file *file_priv)
332{
333 struct vmw_private *dev_priv = vmw_priv(dev);
334 struct drm_vmw_present_readback_arg *arg =
335 (struct drm_vmw_present_readback_arg *)data;
336 struct drm_vmw_fence_rep __user *user_fence_rep =
337 (struct drm_vmw_fence_rep __user *)
338 (unsigned long)arg->fence_rep;
339 struct drm_vmw_rect __user *clips_ptr;
340 struct drm_vmw_rect *clips = NULL;
341 struct drm_framebuffer *fb;
342 struct vmw_framebuffer *vfb;
343 uint32_t num_clips;
344 int ret;
345
346 num_clips = arg->num_clips;
347 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
348
349 if (unlikely(num_clips == 0))
350 return 0;
351
352 if (clips_ptr == NULL) {
353 DRM_ERROR("Argument clips_ptr must be specified.\n");
354 ret = -EINVAL;
355 goto out_clips;
356 }
357
358 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
359 if (clips == NULL) {
360 DRM_ERROR("Failed to allocate clip rect list.\n");
361 ret = -ENOMEM;
362 goto out_clips;
363 }
364
365 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
366 if (ret) {
367 DRM_ERROR("Failed to copy clip rects from userspace.\n");
368 ret = -EFAULT;
369 goto out_no_copy;
370 }
371
372 drm_modeset_lock_all(dev);
373
374 fb = drm_framebuffer_lookup(dev, arg->fb_id);
375 if (!fb) {
376 DRM_ERROR("Invalid framebuffer id.\n");
377 ret = -ENOENT;
378 goto out_no_fb;
379 }
380
381 vfb = vmw_framebuffer_to_vfb(fb);
382 if (!vfb->dmabuf) {
383 DRM_ERROR("Framebuffer not dmabuf backed.\n");
384 ret = -EINVAL;
385 goto out_no_ttm_lock;
386 }
387
388 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
389 if (unlikely(ret != 0))
390 goto out_no_ttm_lock;
391
392 ret = vmw_kms_readback(dev_priv, file_priv,
393 vfb, user_fence_rep,
394 clips, num_clips);
395
396 ttm_read_unlock(&dev_priv->reservation_sem);
397out_no_ttm_lock:
398 drm_framebuffer_unreference(fb);
399out_no_fb:
400 drm_modeset_unlock_all(dev);
401out_no_copy:
402 kfree(clips);
403out_clips:
404 return ret;
405}
406
407
408/**
409 * vmw_fops_poll - wrapper around the drm_poll function
410 *
411 * @filp: See the linux fops poll documentation.
412 * @wait: See the linux fops poll documentation.
413 *
414 * Wrapper around the drm_poll function that makes sure the device is
415 * processing the fifo if drm_poll decides to wait.
416 */
417unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
418{
419 struct drm_file *file_priv = filp->private_data;
420 struct vmw_private *dev_priv =
421 vmw_priv(file_priv->minor->dev);
422
423 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
424 return drm_poll(filp, wait);
425}
426
427
428/**
429 * vmw_fops_read - wrapper around the drm_read function
430 *
431 * @filp: See the linux fops read documentation.
432 * @buffer: See the linux fops read documentation.
433 * @count: See the linux fops read documentation.
434 * offset: See the linux fops read documentation.
435 *
436 * Wrapper around the drm_read function that makes sure the device is
437 * processing the fifo if drm_read decides to wait.
438 */
439ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
440 size_t count, loff_t *offset)
441{
442 struct drm_file *file_priv = filp->private_data;
443 struct vmw_private *dev_priv =
444 vmw_priv(file_priv->minor->dev);
445
446 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
447 return drm_read(filp, buffer, count, offset);
448}