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path: root/drivers/char/drm/drm_agpsupport.c
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Diffstat (limited to 'drivers/char/drm/drm_agpsupport.c')
-rw-r--r--drivers/char/drm/drm_agpsupport.c150
1 files changed, 79 insertions, 71 deletions
diff --git a/drivers/char/drm/drm_agpsupport.c b/drivers/char/drm/drm_agpsupport.c
index 8c215adcb4b2b..2b6453a9ffce6 100644
--- a/drivers/char/drm/drm_agpsupport.c
+++ b/drivers/char/drm/drm_agpsupport.c
@@ -1,7 +1,7 @@
/**
- * \file drm_agpsupport.h
+ * \file drm_agpsupport.h
* DRM support for AGP/GART backend
- *
+ *
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
*/
@@ -48,30 +48,31 @@
* 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(drm_device_t *dev, drm_agp_info_t *info)
+int drm_agp_info(drm_device_t * dev, drm_agp_info_t * info)
{
- DRM_AGP_KERN *kern;
+ DRM_AGP_KERN *kern;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
- kern = &dev->agp->agp_info;
+ 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->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;
return 0;
}
+
EXPORT_SYMBOL(drm_agp_info);
int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
@@ -81,7 +82,7 @@ int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
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;
@@ -91,12 +92,12 @@ int drm_agp_info_ioctl(struct inode *inode, struct file *filp,
* Acquire the AGP device.
*
* \param dev DRM device that is to acquire AGP
- * \return zero on success or a negative number on failure.
+ * \return zero on success or a negative number on failure.
*
* Verifies the AGP device hasn't been acquired before and calls
* \c agp_backend_acquire.
*/
-int drm_agp_acquire(drm_device_t *dev)
+int drm_agp_acquire(drm_device_t * dev)
{
if (!dev->agp)
return -ENODEV;
@@ -107,6 +108,7 @@ int drm_agp_acquire(drm_device_t *dev)
dev->agp->acquired = 1;
return 0;
}
+
EXPORT_SYMBOL(drm_agp_acquire);
/**
@@ -125,8 +127,8 @@ int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
-
- return drm_agp_acquire( (drm_device_t *) priv->head->dev );
+
+ return drm_agp_acquire((drm_device_t *) priv->head->dev);
}
/**
@@ -137,7 +139,7 @@ int drm_agp_acquire_ioctl(struct inode *inode, struct file *filp,
*
* Verifies the AGP device has been acquired and calls \c agp_backend_release.
*/
-int drm_agp_release(drm_device_t *dev)
+int drm_agp_release(drm_device_t * dev)
{
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
@@ -145,6 +147,7 @@ int drm_agp_release(drm_device_t *dev)
dev->agp->acquired = 0;
return 0;
}
+
EXPORT_SYMBOL(drm_agp_release);
int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
@@ -152,13 +155,13 @@ int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
-
+
return drm_agp_release(dev);
}
/**
* Enable the AGP bus.
- *
+ *
* \param dev DRM device that has previously acquired AGP.
* \param mode Requested AGP mode.
* \return zero on success or a negative number on failure.
@@ -166,27 +169,27 @@ int drm_agp_release_ioctl(struct inode *inode, struct file *filp,
* Verifies the AGP device has been acquired but not enabled, and calls
* \c agp_enable.
*/
-int drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode)
+int drm_agp_enable(drm_device_t * dev, drm_agp_mode_t mode)
{
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
- dev->agp->mode = mode.mode;
+ dev->agp->mode = mode.mode;
agp_enable(dev->agp->bridge, mode.mode);
- dev->agp->base = dev->agp->agp_info.aper_base;
+ 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)
+ 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;
@@ -201,20 +204,20 @@ int drm_agp_enable_ioctl(struct inode *inode, struct file *filp,
* \param cmd command.
* \param arg pointer to a drm_agp_buffer structure.
* \return zero on success or a negative number on failure.
- *
+ *
* Verifies the AGP device is present and has been acquired, allocates the
* memory via alloc_agp() and creates a drm_agp_mem entry for it.
*/
int drm_agp_alloc(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_agp_buffer_t request;
- drm_agp_mem_t *entry;
- DRM_AGP_MEM *memory;
- unsigned long pages;
- u32 type;
+ drm_agp_mem_t *entry;
+ DRM_AGP_MEM *memory;
+ unsigned long pages;
+ u32 type;
drm_agp_buffer_t __user *argp = (void __user *)arg;
if (!dev->agp || !dev->agp->acquired)
@@ -224,7 +227,7 @@ int drm_agp_alloc(struct inode *inode, struct file *filp,
if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
return -ENOMEM;
- memset(entry, 0, sizeof(*entry));
+ memset(entry, 0, sizeof(*entry));
pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
type = (u32) request.type;
@@ -234,21 +237,21 @@ int drm_agp_alloc(struct inode *inode, struct file *filp,
return -ENOMEM;
}
- entry->handle = (unsigned long)memory->key + 1;
- entry->memory = memory;
- entry->bound = 0;
- entry->pages = pages;
- entry->prev = NULL;
- entry->next = dev->agp->memory;
+ entry->handle = (unsigned long)memory->key + 1;
+ entry->memory = memory;
+ entry->bound = 0;
+ entry->pages = pages;
+ entry->prev = NULL;
+ entry->next = dev->agp->memory;
if (dev->agp->memory)
dev->agp->memory->prev = entry;
dev->agp->memory = entry;
- request.handle = entry->handle;
+ request.handle = entry->handle;
request.physical = memory->physical;
if (copy_to_user(argp, &request, sizeof(request))) {
- dev->agp->memory = entry->next;
+ dev->agp->memory = entry->next;
dev->agp->memory->prev = NULL;
drm_free_agp(memory, pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
@@ -263,11 +266,11 @@ int drm_agp_alloc(struct inode *inode, struct file *filp,
* \param dev DRM device structure.
* \param handle AGP memory handle.
* \return pointer to the drm_agp_mem structure associated with \p handle.
- *
+ *
* Walks through drm_agp_head::memory until finding a matching handle.
*/
-static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t *dev,
- unsigned long handle)
+static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t * dev,
+ unsigned long handle)
{
drm_agp_mem_t *entry;
@@ -291,17 +294,18 @@ static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t *dev,
* entry and passes it to the unbind_agp() function.
*/
int drm_agp_unbind(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_agp_binding_t request;
- drm_agp_mem_t *entry;
+ drm_agp_mem_t *entry;
int ret;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
- if (copy_from_user(&request, (drm_agp_binding_t __user *)arg, sizeof(request)))
+ if (copy_from_user
+ (&request, (drm_agp_binding_t __user *) arg, sizeof(request)))
return -EFAULT;
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
@@ -309,7 +313,7 @@ int drm_agp_unbind(struct inode *inode, struct file *filp,
return -EINVAL;
ret = drm_unbind_agp(entry->memory);
if (ret == 0)
- entry->bound = 0;
+ entry->bound = 0;
return ret;
}
@@ -327,18 +331,19 @@ int drm_agp_unbind(struct inode *inode, struct file *filp,
* it to bind_agp() function.
*/
int drm_agp_bind(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_agp_binding_t request;
- drm_agp_mem_t *entry;
- int retcode;
- int page;
+ drm_agp_mem_t *entry;
+ int retcode;
+ int page;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
- if (copy_from_user(&request, (drm_agp_binding_t __user *)arg, sizeof(request)))
+ if (copy_from_user
+ (&request, (drm_agp_binding_t __user *) arg, sizeof(request)))
return -EFAULT;
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
@@ -368,16 +373,17 @@ int drm_agp_bind(struct inode *inode, struct file *filp,
* and unlinks from the doubly linked list it's inserted in.
*/
int drm_agp_free(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->head->dev;
drm_agp_buffer_t request;
- drm_agp_mem_t *entry;
+ drm_agp_mem_t *entry;
if (!dev->agp || !dev->agp->acquired)
return -EINVAL;
- if (copy_from_user(&request, (drm_agp_buffer_t __user *)arg, sizeof(request)))
+ if (copy_from_user
+ (&request, (drm_agp_buffer_t __user *) arg, sizeof(request)))
return -EFAULT;
if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
return -EINVAL;
@@ -403,9 +409,9 @@ int drm_agp_free(struct inode *inode, struct file *filp,
* \return pointer to a drm_agp_head structure.
*
*/
-drm_agp_head_t *drm_agp_init(drm_device_t *dev)
+drm_agp_head_t *drm_agp_init(drm_device_t * dev)
{
- drm_agp_head_t *head = NULL;
+ drm_agp_head_t *head = NULL;
if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
return NULL;
@@ -433,13 +439,14 @@ drm_agp_head_t *drm_agp_init(drm_device_t *dev)
}
/** Calls agp_allocate_memory() */
-DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data *bridge, size_t pages, u32 type)
+DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge,
+ size_t pages, u32 type)
{
return agp_allocate_memory(bridge, pages, type);
}
/** Calls agp_free_memory() */
-int drm_agp_free_memory(DRM_AGP_MEM *handle)
+int drm_agp_free_memory(DRM_AGP_MEM * handle)
{
if (!handle)
return 0;
@@ -448,20 +455,21 @@ int drm_agp_free_memory(DRM_AGP_MEM *handle)
}
/** Calls agp_bind_memory() */
-int drm_agp_bind_memory(DRM_AGP_MEM *handle, off_t start)
+int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start)
{
if (!handle)
return -EINVAL;
return agp_bind_memory(handle, start);
}
+
EXPORT_SYMBOL(drm_agp_bind_memory);
/** Calls agp_unbind_memory() */
-int drm_agp_unbind_memory(DRM_AGP_MEM *handle)
+int drm_agp_unbind_memory(DRM_AGP_MEM * handle)
{
if (!handle)
return -EINVAL;
return agp_unbind_memory(handle);
}
-#endif /* __OS_HAS_AGP */
+#endif /* __OS_HAS_AGP */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-11 16:22:06 +0000