1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "vmwgfx_drv.h"
29 #include <drm/vmwgfx_drm.h>
30 #include "vmwgfx_kms.h"
31 #include "device_include/svga3d_caps.h"
33 struct svga_3d_compat_cap {
34 SVGA3dCapsRecordHeader header;
35 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX];
38 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
39 struct drm_file *file_priv)
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);
46 switch (param->param) {
47 case DRM_VMW_PARAM_NUM_STREAMS:
48 param->value = vmw_overlay_num_overlays(dev_priv);
50 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
51 param->value = vmw_overlay_num_free_overlays(dev_priv);
53 case DRM_VMW_PARAM_3D:
54 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
56 case DRM_VMW_PARAM_HW_CAPS:
57 param->value = dev_priv->capabilities;
59 case DRM_VMW_PARAM_HW_CAPS2:
60 param->value = dev_priv->capabilities2;
62 case DRM_VMW_PARAM_FIFO_CAPS:
63 param->value = dev_priv->fifo.capabilities;
65 case DRM_VMW_PARAM_MAX_FB_SIZE:
66 param->value = dev_priv->prim_bb_mem;
68 case DRM_VMW_PARAM_FIFO_HW_VERSION:
70 u32 *fifo_mem = dev_priv->mmio_virt;
71 const struct vmw_fifo_state *fifo = &dev_priv->fifo;
73 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
74 param->value = SVGA3D_HWVERSION_WS8_B1;
79 vmw_mmio_read(fifo_mem +
80 ((fifo->capabilities &
81 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
82 SVGA_FIFO_3D_HWVERSION_REVISED :
83 SVGA_FIFO_3D_HWVERSION));
86 case DRM_VMW_PARAM_MAX_SURF_MEMORY:
87 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
89 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
91 param->value = dev_priv->memory_size;
93 case DRM_VMW_PARAM_3D_CAPS_SIZE:
94 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
96 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
97 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
98 param->value = sizeof(struct svga_3d_compat_cap) +
101 param->value = (SVGA_FIFO_3D_CAPS_LAST -
102 SVGA_FIFO_3D_CAPS + 1) *
105 case DRM_VMW_PARAM_MAX_MOB_MEMORY:
106 vmw_fp->gb_aware = true;
107 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
109 case DRM_VMW_PARAM_MAX_MOB_SIZE:
110 param->value = dev_priv->max_mob_size;
112 case DRM_VMW_PARAM_SCREEN_TARGET:
114 (dev_priv->active_display_unit == vmw_du_screen_target);
116 case DRM_VMW_PARAM_DX:
117 param->value = dev_priv->has_dx;
119 case DRM_VMW_PARAM_SM4_1:
120 param->value = dev_priv->has_sm4_1;
129 static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value)
132 * A version of user-space exists which use MULTISAMPLE_MASKABLESAMPLES
133 * to check the sample count supported by virtual device. Since there
134 * never was support for multisample count for backing MOB return 0.
136 if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES)
142 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
145 struct svga_3d_compat_cap *compat_cap =
146 (struct svga_3d_compat_cap *) bounce;
148 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
149 unsigned int max_size;
151 if (size < pair_offset)
154 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair);
156 if (max_size > SVGA3D_DEVCAP_MAX)
157 max_size = SVGA3D_DEVCAP_MAX;
159 compat_cap->header.length =
160 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32);
161 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS;
163 spin_lock(&dev_priv->cap_lock);
164 for (i = 0; i < max_size; ++i) {
165 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
166 compat_cap->pairs[i][0] = i;
167 compat_cap->pairs[i][1] = vmw_mask_multisample
168 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
170 spin_unlock(&dev_priv->cap_lock);
176 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
177 struct drm_file *file_priv)
179 struct drm_vmw_get_3d_cap_arg *arg =
180 (struct drm_vmw_get_3d_cap_arg *) data;
181 struct vmw_private *dev_priv = vmw_priv(dev);
184 void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
187 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
188 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
190 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
191 DRM_ERROR("Illegal GET_3D_CAP argument.\n");
195 if (gb_objects && vmw_fp->gb_aware)
196 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
198 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t);
200 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
203 if (arg->max_size < size)
204 size = arg->max_size;
206 bounce = vzalloc(size);
207 if (unlikely(bounce == NULL)) {
208 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
212 if (gb_objects && vmw_fp->gb_aware) {
214 uint32_t *bounce32 = (uint32_t *) bounce;
216 num = size / sizeof(uint32_t);
217 if (num > SVGA3D_DEVCAP_MAX)
218 num = SVGA3D_DEVCAP_MAX;
220 spin_lock(&dev_priv->cap_lock);
221 for (i = 0; i < num; ++i) {
222 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
223 *bounce32++ = vmw_mask_multisample
224 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
226 spin_unlock(&dev_priv->cap_lock);
227 } else if (gb_objects) {
228 ret = vmw_fill_compat_cap(dev_priv, bounce, size);
229 if (unlikely(ret != 0))
232 fifo_mem = dev_priv->mmio_virt;
233 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
236 ret = copy_to_user(buffer, bounce, size);
242 if (unlikely(ret != 0))
243 DRM_ERROR("Failed to report 3D caps info.\n");
248 int vmw_present_ioctl(struct drm_device *dev, void *data,
249 struct drm_file *file_priv)
251 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
252 struct vmw_private *dev_priv = vmw_priv(dev);
253 struct drm_vmw_present_arg *arg =
254 (struct drm_vmw_present_arg *)data;
255 struct vmw_surface *surface;
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 struct vmw_resource *res;
264 num_clips = arg->num_clips;
265 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
267 if (unlikely(num_clips == 0))
270 if (clips_ptr == NULL) {
271 DRM_ERROR("Variable clips_ptr must be specified.\n");
276 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
278 DRM_ERROR("Failed to allocate clip rect list.\n");
283 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
285 DRM_ERROR("Failed to copy clip rects from userspace.\n");
290 drm_modeset_lock_all(dev);
292 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
294 DRM_ERROR("Invalid framebuffer id.\n");
298 vfb = vmw_framebuffer_to_vfb(fb);
300 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
301 if (unlikely(ret != 0))
302 goto out_no_ttm_lock;
304 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
305 user_surface_converter,
310 surface = vmw_res_to_srf(res);
311 ret = vmw_kms_present(dev_priv, file_priv,
312 vfb, surface, arg->sid,
313 arg->dest_x, arg->dest_y,
316 /* vmw_user_surface_lookup takes one ref so does new_fb */
317 vmw_surface_unreference(&surface);
320 ttm_read_unlock(&dev_priv->reservation_sem);
322 drm_framebuffer_put(fb);
324 drm_modeset_unlock_all(dev);
331 int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
332 struct drm_file *file_priv)
334 struct vmw_private *dev_priv = vmw_priv(dev);
335 struct drm_vmw_present_readback_arg *arg =
336 (struct drm_vmw_present_readback_arg *)data;
337 struct drm_vmw_fence_rep __user *user_fence_rep =
338 (struct drm_vmw_fence_rep __user *)
339 (unsigned long)arg->fence_rep;
340 struct drm_vmw_rect __user *clips_ptr;
341 struct drm_vmw_rect *clips = NULL;
342 struct drm_framebuffer *fb;
343 struct vmw_framebuffer *vfb;
347 num_clips = arg->num_clips;
348 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
350 if (unlikely(num_clips == 0))
353 if (clips_ptr == NULL) {
354 DRM_ERROR("Argument clips_ptr must be specified.\n");
359 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
361 DRM_ERROR("Failed to allocate clip rect list.\n");
366 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
368 DRM_ERROR("Failed to copy clip rects from userspace.\n");
373 drm_modeset_lock_all(dev);
375 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
377 DRM_ERROR("Invalid framebuffer id.\n");
382 vfb = vmw_framebuffer_to_vfb(fb);
384 DRM_ERROR("Framebuffer not buffer backed.\n");
386 goto out_no_ttm_lock;
389 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
390 if (unlikely(ret != 0))
391 goto out_no_ttm_lock;
393 ret = vmw_kms_readback(dev_priv, file_priv,
397 ttm_read_unlock(&dev_priv->reservation_sem);
399 drm_framebuffer_put(fb);
401 drm_modeset_unlock_all(dev);
410 * vmw_fops_poll - wrapper around the drm_poll function
412 * @filp: See the linux fops poll documentation.
413 * @wait: See the linux fops poll documentation.
415 * Wrapper around the drm_poll function that makes sure the device is
416 * processing the fifo if drm_poll decides to wait.
418 __poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
420 struct drm_file *file_priv = filp->private_data;
421 struct vmw_private *dev_priv =
422 vmw_priv(file_priv->minor->dev);
424 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
425 return drm_poll(filp, wait);
430 * vmw_fops_read - wrapper around the drm_read function
432 * @filp: See the linux fops read documentation.
433 * @buffer: See the linux fops read documentation.
434 * @count: See the linux fops read documentation.
435 * offset: See the linux fops read documentation.
437 * Wrapper around the drm_read function that makes sure the device is
438 * processing the fifo if drm_read decides to wait.
440 ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
441 size_t count, loff_t *offset)
443 struct drm_file *file_priv = filp->private_data;
444 struct vmw_private *dev_priv =
445 vmw_priv(file_priv->minor->dev);
447 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
448 return drm_read(filp, buffer, count, offset);