diff options
Diffstat (limited to 'drivers/char/drm/drm_agpsupport.c')
| -rw-r--r-- | drivers/char/drm/drm_agpsupport.c | 150 |
1 files changed, 79 insertions, 71 deletions
diff --git a/drivers/char/drm/drm_agpsupport.c b/drivers/char/drm/drm_agpsupport.c index 8c215adcb4b2..2b6453a9ffce 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 */ |