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drm: update some function so a driver can call them

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This patch splits some ioctl functions so that they can be called
in-kernel by a DRM driver. The driver will use them later.

From: Ian Romanick <idr@us.ibm.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie
2005-07-10 16:56:52 +10:00
committed by Dave Airlie
parent 9c8da5ebbf
commit 7ab984012a
4 changed files with 168 additions and 102 deletions
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137
drivers/char/drm/drm_agpsupport.c
View File

@@ -37,7 +37,7 @@
#if __OS_HAS_AGP
/**
* AGP information ioctl.
* Get AGP information.
*
* \param inode device inode.
* \param filp file pointer.
@@ -48,51 +48,56 @@
* Verifies the AGP device has been initialized and acquired and fills in the
* drm_agp_info structure with the information in drm_agp_head::agp_info.
*/
int drm_agp_info(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
int drm_agp_info(drm_device_t *dev, drm_agp_info_t *info)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
DRM_AGP_KERN *kern;
drm_agp_info_t info;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
kern = &dev->agp->agp_info;
info.agp_version_major = kern->version.major;
info.agp_version_minor = kern->version.minor;
info.mode = kern->mode;
info.aperture_base = kern->aper_base;
info.aperture_size = kern->aper_size * 1024 * 1024;
info.memory_allowed = kern->max_memory << PAGE_SHIFT;
info.memory_used = kern->current_memory << PAGE_SHIFT;
info.id_vendor = kern->device->vendor;
info.id_device = kern->device->device;
info->agp_version_major = kern->version.major;
info->agp_version_minor = kern->version.minor;
info->mode = kern->mode;
info->aperture_base = kern->aper_base;
info->aperture_size = kern->aper_size * 1024 * 1024;
info->memory_allowed = kern->max_memory << PAGE_SHIFT;
info->memory_used = kern->current_memory << PAGE_SHIFT;
info->id_vendor = kern->device->vendor;
info->id_device = kern->device->device;
if (copy_to_user((drm_agp_info_t __user *)arg, &info, sizeof(info)))
return 0;
}
EXPORT_SYMBOL(drm_agp_info);
int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_agp_info_t info;
int err;
err = drm_agp_info(dev, &info);
if (err)
return err;
if (copy_to_user((drm_agp_info_t __user *) arg, &info, sizeof(info)))
return -EFAULT;
return 0;
}
/**
* Acquire the AGP device (ioctl).
* Acquire the AGP device.
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg user argument.
* \param dev DRM device that is to acquire AGP
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device hasn't been acquired before and calls
* agp_acquire().
* \c agp_backend_acquire.
*/
int drm_agp_acquire(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
int drm_agp_acquire(drm_device_t *dev)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
if (!dev->agp)
return -ENODEV;
if (dev->agp->acquired)
@@ -102,9 +107,10 @@ int drm_agp_acquire(struct inode *inode, struct file *filp,
dev->agp->acquired = 1;
return 0;
}
EXPORT_SYMBOL(drm_agp_acquire);
/**
* Release the AGP device (ioctl).
* Acquire the AGP device (ioctl).
*
* \param inode device inode.
* \param filp file pointer.
@@ -112,63 +118,80 @@ int drm_agp_acquire(struct inode *inode, struct file *filp,
* \param arg user argument.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device has been acquired and calls agp_backend_release().
* Verifies the AGP device hasn't been acquired before and calls
* \c agp_backend_acquire.
*/
int drm_agp_release(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
agp_backend_release(dev->agp->bridge);
dev->agp->acquired = 0;
return 0;
drm_file_t *priv = filp->private_data;
return drm_agp_acquire( (drm_device_t *) priv->head->dev );
}
/**
* Release the AGP device.
*
* Calls agp_backend_release().
* \param dev DRM device that is to release AGP
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device has been acquired and calls \c agp_backend_release.
*/
void drm_agp_do_release(drm_device_t *dev)
int drm_agp_release(drm_device_t *dev)
{
agp_backend_release(dev->agp->bridge);
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
agp_backend_release(dev->agp->bridge);
dev->agp->acquired = 0;
return 0;
}
EXPORT_SYMBOL(drm_agp_release);
int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
return drm_agp_release(dev);
}
/**
* Enable the AGP bus.
*
* \param inode device inode.
* \param filp file pointer.
* \param cmd command.
* \param arg pointer to a drm_agp_mode structure.
* \param dev DRM device that has previously acquired AGP.
* \param mode Requested AGP mode.
* \return zero on success or a negative number on failure.
*
* Verifies the AGP device has been acquired but not enabled, and calls
* agp_enable().
* \c agp_enable.
*/
int drm_agp_enable(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
int drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_agp_mode_t mode;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
if (copy_from_user(&mode, (drm_agp_mode_t __user *)arg, sizeof(mode)))
return -EFAULT;
dev->agp->mode = mode.mode;
agp_enable(dev->agp->bridge, mode.mode);
dev->agp->base = dev->agp->agp_info.aper_base;
dev->agp->enabled = 1;
return 0;
}
EXPORT_SYMBOL(drm_agp_enable);
int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_agp_mode_t mode;
if (copy_from_user(&mode, (drm_agp_mode_t __user *) arg, sizeof(mode)))
return -EFAULT;
return drm_agp_enable(dev, mode);
}
/**
* Allocate AGP memory.