diff options
author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-31 12:35:57 (GMT) |
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committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-31 12:35:57 (GMT) |
commit | 2ca1a615835d9f4990f42102ab1f2ef434e7e89c (patch) | |
tree | 726cf3d5f29a6c66c44e4bd68e7ebed2fd83d059 /drivers/gpu/drm/drm_fops.c | |
parent | e12f0102ac81d660c9f801d0a0e10ccf4537a9de (diff) | |
parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) | |
download | linux-fsl-qoriq-2ca1a615835d9f4990f42102ab1f2ef434e7e89c.tar.xz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
arch/x86/kernel/io_apic.c
Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
-rw-r--r-- | drivers/gpu/drm/drm_fops.c | 223 |
1 files changed, 141 insertions, 82 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 78eeed5..3733e36 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -35,7 +35,6 @@ */ #include "drmP.h" -#include "drm_sarea.h" #include <linux/poll.h> #include <linux/smp_lock.h> @@ -44,10 +43,8 @@ static int drm_open_helper(struct inode *inode, struct file *filp, static int drm_setup(struct drm_device * dev) { - drm_local_map_t *map; int i; int ret; - u32 sareapage; if (dev->driver->firstopen) { ret = dev->driver->firstopen(dev); @@ -55,20 +52,14 @@ static int drm_setup(struct drm_device * dev) return ret; } - dev->magicfree.next = NULL; - - /* prebuild the SAREA */ - sareapage = max_t(unsigned, SAREA_MAX, PAGE_SIZE); - i = drm_addmap(dev, 0, sareapage, _DRM_SHM, _DRM_CONTAINS_LOCK, &map); - if (i != 0) - return i; - atomic_set(&dev->ioctl_count, 0); atomic_set(&dev->vma_count, 0); - dev->buf_use = 0; - atomic_set(&dev->buf_alloc, 0); - if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) { + if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && + !drm_core_check_feature(dev, DRIVER_MODESET)) { + dev->buf_use = 0; + atomic_set(&dev->buf_alloc, 0); + i = drm_dma_setup(dev); if (i < 0) return i; @@ -77,16 +68,12 @@ static int drm_setup(struct drm_device * dev) for (i = 0; i < ARRAY_SIZE(dev->counts); i++) atomic_set(&dev->counts[i], 0); - drm_ht_create(&dev->magiclist, DRM_MAGIC_HASH_ORDER); - INIT_LIST_HEAD(&dev->magicfree); - dev->sigdata.lock = NULL; - init_waitqueue_head(&dev->lock.lock_queue); + dev->queue_count = 0; dev->queue_reserved = 0; dev->queue_slots = 0; dev->queuelist = NULL; - dev->irq_enabled = 0; dev->context_flag = 0; dev->interrupt_flag = 0; dev->dma_flag = 0; @@ -147,10 +134,20 @@ int drm_open(struct inode *inode, struct file *filp) spin_lock(&dev->count_lock); if (!dev->open_count++) { spin_unlock(&dev->count_lock); - return drm_setup(dev); + retcode = drm_setup(dev); + goto out; } spin_unlock(&dev->count_lock); } +out: + mutex_lock(&dev->struct_mutex); + if (minor->type == DRM_MINOR_LEGACY) { + BUG_ON((dev->dev_mapping != NULL) && + (dev->dev_mapping != inode->i_mapping)); + if (dev->dev_mapping == NULL) + dev->dev_mapping = inode->i_mapping; + } + mutex_unlock(&dev->struct_mutex); return retcode; } @@ -255,6 +252,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp, priv->lock_count = 0; INIT_LIST_HEAD(&priv->lhead); + INIT_LIST_HEAD(&priv->fbs); if (dev->driver->driver_features & DRIVER_GEM) drm_gem_open(dev, priv); @@ -265,10 +263,42 @@ static int drm_open_helper(struct inode *inode, struct file *filp, goto out_free; } + + /* if there is no current master make this fd it */ mutex_lock(&dev->struct_mutex); - if (list_empty(&dev->filelist)) - priv->master = 1; + if (!priv->minor->master) { + /* create a new master */ + priv->minor->master = drm_master_create(priv->minor); + if (!priv->minor->master) { + ret = -ENOMEM; + goto out_free; + } + priv->is_master = 1; + /* take another reference for the copy in the local file priv */ + priv->master = drm_master_get(priv->minor->master); + + priv->authenticated = 1; + + mutex_unlock(&dev->struct_mutex); + if (dev->driver->master_create) { + ret = dev->driver->master_create(dev, priv->master); + if (ret) { + mutex_lock(&dev->struct_mutex); + /* drop both references if this fails */ + drm_master_put(&priv->minor->master); + drm_master_put(&priv->master); + mutex_unlock(&dev->struct_mutex); + goto out_free; + } + } + } else { + /* get a reference to the master */ + priv->master = drm_master_get(priv->minor->master); + mutex_unlock(&dev->struct_mutex); + } + + mutex_lock(&dev->struct_mutex); list_add(&priv->lhead, &dev->filelist); mutex_unlock(&dev->struct_mutex); @@ -314,6 +344,74 @@ int drm_fasync(int fd, struct file *filp, int on) } EXPORT_SYMBOL(drm_fasync); +/* + * Reclaim locked buffers; note that this may be a bad idea if the current + * context doesn't have the hw lock... + */ +static void drm_reclaim_locked_buffers(struct drm_device *dev, struct file *f) +{ + struct drm_file *file_priv = f->private_data; + + if (drm_i_have_hw_lock(dev, file_priv)) { + dev->driver->reclaim_buffers_locked(dev, file_priv); + } else { + unsigned long _end = jiffies + 3 * DRM_HZ; + int locked = 0; + + drm_idlelock_take(&file_priv->master->lock); + + /* + * Wait for a while. + */ + do { + spin_lock_bh(&file_priv->master->lock.spinlock); + locked = file_priv->master->lock.idle_has_lock; + spin_unlock_bh(&file_priv->master->lock.spinlock); + if (locked) + break; + schedule(); + } while (!time_after_eq(jiffies, _end)); + + if (!locked) { + DRM_ERROR("reclaim_buffers_locked() deadlock. Please rework this\n" + "\tdriver to use reclaim_buffers_idlelocked() instead.\n" + "\tI will go on reclaiming the buffers anyway.\n"); + } + + dev->driver->reclaim_buffers_locked(dev, file_priv); + drm_idlelock_release(&file_priv->master->lock); + } +} + +static void drm_master_release(struct drm_device *dev, struct file *filp) +{ + struct drm_file *file_priv = filp->private_data; + + if (dev->driver->reclaim_buffers_locked && + file_priv->master->lock.hw_lock) + drm_reclaim_locked_buffers(dev, filp); + + if (dev->driver->reclaim_buffers_idlelocked && + file_priv->master->lock.hw_lock) { + drm_idlelock_take(&file_priv->master->lock); + dev->driver->reclaim_buffers_idlelocked(dev, file_priv); + drm_idlelock_release(&file_priv->master->lock); + } + + + if (drm_i_have_hw_lock(dev, file_priv)) { + DRM_DEBUG("File %p released, freeing lock for context %d\n", + filp, _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock)); + drm_lock_free(&file_priv->master->lock, + _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock)); + } + + if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && + !dev->driver->reclaim_buffers_locked) { + dev->driver->reclaim_buffers(dev, file_priv); + } +} + /** * Release file. * @@ -348,60 +446,9 @@ int drm_release(struct inode *inode, struct file *filp) (long)old_encode_dev(file_priv->minor->device), dev->open_count); - if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) { - if (drm_i_have_hw_lock(dev, file_priv)) { - dev->driver->reclaim_buffers_locked(dev, file_priv); - } else { - unsigned long endtime = jiffies + 3 * DRM_HZ; - int locked = 0; - - drm_idlelock_take(&dev->lock); - - /* - * Wait for a while. - */ - - do{ - spin_lock_bh(&dev->lock.spinlock); - locked = dev->lock.idle_has_lock; - spin_unlock_bh(&dev->lock.spinlock); - if (locked) - break; - schedule(); - } while (!time_after_eq(jiffies, endtime)); - - if (!locked) { - DRM_ERROR("reclaim_buffers_locked() deadlock. Please rework this\n" - "\tdriver to use reclaim_buffers_idlelocked() instead.\n" - "\tI will go on reclaiming the buffers anyway.\n"); - } - - dev->driver->reclaim_buffers_locked(dev, file_priv); - drm_idlelock_release(&dev->lock); - } - } - - if (dev->driver->reclaim_buffers_idlelocked && dev->lock.hw_lock) { - - drm_idlelock_take(&dev->lock); - dev->driver->reclaim_buffers_idlelocked(dev, file_priv); - drm_idlelock_release(&dev->lock); - - } - - if (drm_i_have_hw_lock(dev, file_priv)) { - DRM_DEBUG("File %p released, freeing lock for context %d\n", - filp, _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); - - drm_lock_free(&dev->lock, - _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)); - } - - - if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) && - !dev->driver->reclaim_buffers_locked) { - dev->driver->reclaim_buffers(dev, file_priv); - } + /* if the master has gone away we can't do anything with the lock */ + if (file_priv->minor->master) + drm_master_release(dev, filp); if (dev->driver->driver_features & DRIVER_GEM) drm_gem_release(dev, file_priv); @@ -428,12 +475,24 @@ int drm_release(struct inode *inode, struct file *filp) mutex_unlock(&dev->ctxlist_mutex); mutex_lock(&dev->struct_mutex); - if (file_priv->remove_auth_on_close == 1) { + + if (file_priv->is_master) { struct drm_file *temp; + list_for_each_entry(temp, &dev->filelist, lhead) { + if ((temp->master == file_priv->master) && + (temp != file_priv)) + temp->authenticated = 0; + } - list_for_each_entry(temp, &dev->filelist, lhead) - temp->authenticated = 0; + if (file_priv->minor->master == file_priv->master) { + /* drop the reference held my the minor */ + drm_master_put(&file_priv->minor->master); + } } + + /* drop the reference held my the file priv */ + drm_master_put(&file_priv->master); + file_priv->is_master = 0; list_del(&file_priv->lhead); mutex_unlock(&dev->struct_mutex); @@ -448,9 +507,9 @@ int drm_release(struct inode *inode, struct file *filp) atomic_inc(&dev->counts[_DRM_STAT_CLOSES]); spin_lock(&dev->count_lock); if (!--dev->open_count) { - if (atomic_read(&dev->ioctl_count) || dev->blocked) { - DRM_ERROR("Device busy: %d %d\n", - atomic_read(&dev->ioctl_count), dev->blocked); + if (atomic_read(&dev->ioctl_count)) { + DRM_ERROR("Device busy: %d\n", + atomic_read(&dev->ioctl_count)); spin_unlock(&dev->count_lock); unlock_kernel(); return -EBUSY; |