1 /**************************************************************************
2 * Copyright (c) 2008, Intel Corporation.
4 * Copyright (c) 2008, Tungsten Graphics Inc. Cedar Park, TX., USA.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
20 **************************************************************************/
25 #include "psb_ttm_userobj_api.h"
29 static struct vm_operations_struct psb_ttm_vm_ops;
32 * NOTE: driver_private of drm_file is now a struct psb_file_data struct
33 * pPriv in struct psb_file_data contains the original psb_fpriv;
35 int psb_open(struct inode *inode, struct file *filp)
37 struct drm_file *file_priv;
38 struct drm_psb_private *dev_priv;
39 struct psb_fpriv *psb_fp;
40 struct psb_file_data *pvr_file_priv;
45 ret = drm_open(inode, filp);
49 psb_fp = kzalloc(sizeof(*psb_fp), GFP_KERNEL);
51 if (unlikely(psb_fp == NULL))
54 file_priv = (struct drm_file *) filp->private_data;
55 dev_priv = psb_priv(file_priv->minor->dev);
57 DRM_DEBUG("is_master %d\n", file_priv->is_master ? 1 : 0);
59 psb_fp->tfile = ttm_object_file_init(dev_priv->tdev,
60 PSB_FILE_OBJECT_HASH_ORDER);
61 if (unlikely(psb_fp->tfile == NULL))
64 pvr_file_priv = (struct psb_file_data *)file_priv->driver_priv;
66 DRM_ERROR("drm file private is NULL\n");
70 pvr_file_priv->priv = psb_fp;
71 if (unlikely(dev_priv->bdev.dev_mapping == NULL))
72 dev_priv->bdev.dev_mapping = dev_priv->dev->dev_mapping;
79 (void) drm_release(inode, filp);
83 int psb_release(struct inode *inode, struct file *filp)
85 struct drm_file *file_priv;
86 struct psb_fpriv *psb_fp;
87 struct drm_psb_private *dev_priv;
89 file_priv = (struct drm_file *) filp->private_data;
90 psb_fp = psb_fpriv(file_priv);
91 dev_priv = psb_priv(file_priv->minor->dev);
93 ttm_object_file_release(&psb_fp->tfile);
96 ret = drm_release(inode, filp);
101 int psb_fence_signaled_ioctl(struct drm_device *dev, void *data,
102 struct drm_file *file_priv)
105 return ttm_fence_signaled_ioctl(psb_fpriv(file_priv)->tfile, data);
108 int psb_fence_finish_ioctl(struct drm_device *dev, void *data,
109 struct drm_file *file_priv)
111 return ttm_fence_finish_ioctl(psb_fpriv(file_priv)->tfile, data);
114 int psb_fence_unref_ioctl(struct drm_device *dev, void *data,
115 struct drm_file *file_priv)
117 return ttm_fence_unref_ioctl(psb_fpriv(file_priv)->tfile, data);
120 int psb_pl_waitidle_ioctl(struct drm_device *dev, void *data,
121 struct drm_file *file_priv)
123 return ttm_pl_waitidle_ioctl(psb_fpriv(file_priv)->tfile, data);
126 int psb_pl_setstatus_ioctl(struct drm_device *dev, void *data,
127 struct drm_file *file_priv)
129 return ttm_pl_setstatus_ioctl(psb_fpriv(file_priv)->tfile,
130 &psb_priv(dev)->ttm_lock, data);
134 int psb_pl_synccpu_ioctl(struct drm_device *dev, void *data,
135 struct drm_file *file_priv)
137 return ttm_pl_synccpu_ioctl(psb_fpriv(file_priv)->tfile, data);
140 int psb_pl_unref_ioctl(struct drm_device *dev, void *data,
141 struct drm_file *file_priv)
143 return ttm_pl_unref_ioctl(psb_fpriv(file_priv)->tfile, data);
147 int psb_pl_reference_ioctl(struct drm_device *dev, void *data,
148 struct drm_file *file_priv)
150 return ttm_pl_reference_ioctl(psb_fpriv(file_priv)->tfile, data);
154 int psb_pl_create_ioctl(struct drm_device *dev, void *data,
155 struct drm_file *file_priv)
157 struct drm_psb_private *dev_priv = psb_priv(dev);
159 return ttm_pl_create_ioctl(psb_fpriv(file_priv)->tfile,
160 &dev_priv->bdev, &dev_priv->ttm_lock, data);
164 int psb_pl_ub_create_ioctl(struct drm_device *dev, void *data,
165 struct drm_file *file_priv)
167 struct drm_psb_private *dev_priv = psb_priv(dev);
169 return ttm_pl_ub_create_ioctl(psb_fpriv(file_priv)->tfile,
170 &dev_priv->bdev, &dev_priv->ttm_lock, data);
174 * psb_ttm_fault - Wrapper around the ttm fault method.
176 * @vma: The struct vm_area_struct as in the vm fault() method.
177 * @vmf: The struct vm_fault as in the vm fault() method.
179 * Since ttm_fault() will reserve buffers while faulting,
180 * we need to take the ttm read lock around it, as this driver
181 * relies on the ttm_lock in write mode to exclude all threads from
182 * reserving and thus validating buffers in aperture- and memory shortage
186 static int psb_ttm_fault(struct vm_area_struct *vma,
187 struct vm_fault *vmf)
189 struct ttm_buffer_object *bo = (struct ttm_buffer_object *)
190 vma->vm_private_data;
191 struct drm_psb_private *dev_priv =
192 container_of(bo->bdev, struct drm_psb_private, bdev);
195 ret = ttm_read_lock(&dev_priv->ttm_lock, true);
196 if (unlikely(ret != 0))
197 return VM_FAULT_NOPAGE;
199 ret = dev_priv->ttm_vm_ops->fault(vma, vmf);
201 ttm_read_unlock(&dev_priv->ttm_lock);
206 * if vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET call directly to
209 int psb_mmap(struct file *filp, struct vm_area_struct *vma)
211 struct drm_file *file_priv;
212 struct drm_psb_private *dev_priv;
215 if (vma->vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET ||
216 vma->vm_pgoff > 2 * DRM_PSB_FILE_PAGE_OFFSET)
218 return PVRMMap(filp, vma);
223 file_priv = (struct drm_file *) filp->private_data;
224 dev_priv = psb_priv(file_priv->minor->dev);
226 ret = ttm_bo_mmap(filp, vma, &dev_priv->bdev);
227 if (unlikely(ret != 0))
230 if (unlikely(dev_priv->ttm_vm_ops == NULL)) {
231 dev_priv->ttm_vm_ops = (struct vm_operations_struct *)
233 psb_ttm_vm_ops = *vma->vm_ops;
234 psb_ttm_vm_ops.fault = &psb_ttm_fault;
237 vma->vm_ops = &psb_ttm_vm_ops;
242 ssize_t psb_ttm_write(struct file *filp, const char __user *buf,
243 size_t count, loff_t *f_pos)
245 struct drm_file *file_priv = (struct drm_file *)filp->private_data;
246 struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev);
248 return ttm_bo_io(&dev_priv->bdev, filp, buf, NULL, count, f_pos, 1);
251 ssize_t psb_ttm_read(struct file *filp, char __user *buf,
252 size_t count, loff_t *f_pos)
254 struct drm_file *file_priv = (struct drm_file *)filp->private_data;
255 struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev);
257 return ttm_bo_io(&dev_priv->bdev, filp, NULL, buf, count, f_pos, 1);
260 int psb_verify_access(struct ttm_buffer_object *bo,
263 struct drm_file *file_priv = (struct drm_file *)filp->private_data;
265 if (capable(CAP_SYS_ADMIN))
268 if (unlikely(!file_priv->authenticated))
271 return ttm_pl_verify_access(bo, psb_fpriv(file_priv)->tfile);
274 static int psb_ttm_mem_global_init(struct drm_global_reference *ref)
276 return ttm_mem_global_init(ref->object);
279 static void psb_ttm_mem_global_release(struct drm_global_reference *ref)
281 ttm_mem_global_release(ref->object);
284 int psb_ttm_global_init(struct drm_psb_private *dev_priv)
286 struct drm_global_reference *global_ref;
289 global_ref = &dev_priv->mem_global_ref;
290 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
291 global_ref->size = sizeof(struct ttm_mem_global);
292 global_ref->init = &psb_ttm_mem_global_init;
293 global_ref->release = &psb_ttm_mem_global_release;
295 ret = drm_global_item_ref(global_ref);
296 if (unlikely(ret != 0)) {
297 DRM_ERROR("Failed referencing a global TTM memory object.\n");
301 dev_priv->bo_global_ref.mem_glob = dev_priv->mem_global_ref.object;
302 global_ref = &dev_priv->bo_global_ref.ref;
303 global_ref->global_type = DRM_GLOBAL_TTM_BO;
304 global_ref->size = sizeof(struct ttm_bo_global);
305 global_ref->init = &ttm_bo_global_init;
306 global_ref->release = &ttm_bo_global_release;
307 ret = drm_global_item_ref(global_ref);
309 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
310 drm_global_item_unref(global_ref);
316 void psb_ttm_global_release(struct drm_psb_private *dev_priv)
318 drm_global_item_unref(&dev_priv->mem_global_ref);
321 int psb_getpageaddrs_ioctl(struct drm_device *dev, void *data,
322 struct drm_file *file_priv)
324 struct drm_psb_getpageaddrs_arg *arg = data;
325 struct ttm_buffer_object *bo;
327 struct page **tt_pages;
328 unsigned long i, num_pages;
329 unsigned long *p = arg->page_addrs;
332 bo = ttm_buffer_object_lookup(psb_fpriv(file_priv)->tfile,
334 if (unlikely(bo == NULL)) {
336 "Could not find buffer object for getpageaddrs.\n");
340 arg->gtt_offset = bo->offset;
342 num_pages = ttm->num_pages;
343 tt_pages = ttm->pages;
345 for (i = 0; i < num_pages; i++)
346 p[i] = (unsigned long)page_to_phys(tt_pages[i]);