X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fchar%2Fdrm%2Fdrm_agpsupport.c;h=40bfd9b01e3973e5e2865d2aef3eb280a99ff494;hb=8a0c551415dc3c5aa1e6cac99724ad795498485b;hp=8d94c0b5fa44f00c0859b3c63e1103d5876bc6bc;hpb=b1644648ae5a87454d06f1dd96783b0ec4d292df;p=linux-2.6.git diff --git a/drivers/char/drm/drm_agpsupport.c b/drivers/char/drm/drm_agpsupport.c index 8d94c0b5f..40bfd9b01 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.c * DRM support for AGP/GART backend - * + * * \author Rickard E. (Rik) Faith * \author Gareth Hughes */ @@ -37,7 +37,7 @@ #if __OS_HAS_AGP /** - * AGP information ioctl. + * Get AGP information. * * \param inode device inode. * \param filp file pointer. @@ -48,51 +48,57 @@ * 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; + DRM_AGP_KERN *kern; 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; - - if (copy_to_user((drm_agp_info_t __user *)arg, &info, sizeof(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; + + 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. - * \return zero on success or a negative number on failure. + * \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) @@ -103,8 +109,10 @@ int drm_agp_acquire(struct inode *inode, struct file *filp, 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. @@ -112,64 +120,81 @@ 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; + drm_file_t *priv = filp->private_data; + return drm_agp_acquire((drm_device_t *) priv->head->dev); +} + +/** + * Release the AGP device. + * + * \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. + */ +int drm_agp_release(drm_device_t * dev) +{ 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); -/** - * Release the AGP device. - * - * Calls agp_backend_release(). - */ -void drm_agp_do_release(drm_device_t *dev) +int drm_agp_release_ioctl(struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) { - agp_backend_release(dev->agp->bridge); + 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; + 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) +{ + 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. * @@ -178,59 +203,74 @@ int drm_agp_enable(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) +int drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request) { - 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_buffer_t __user *argp = (void __user *)arg; + drm_agp_mem_t *entry; + DRM_AGP_MEM *memory; + unsigned long pages; + u32 type; if (!dev->agp || !dev->agp->acquired) return -EINVAL; - if (copy_from_user(&request, argp, sizeof(request))) - return -EFAULT; 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; - - if (!(memory = drm_alloc_agp(dev->agp->bridge, pages, type))) { + pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE; + type = (u32) request->type; + if (!(memory = drm_alloc_agp(dev, pages, type))) { drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); 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.physical = memory->physical; + request->handle = entry->handle; + request->physical = memory->physical; + + return 0; +} +EXPORT_SYMBOL(drm_agp_alloc); + +int drm_agp_alloc_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_buffer_t request; + drm_agp_buffer_t __user *argp = (void __user *)arg; + int err; + + if (copy_from_user(&request, argp, sizeof(request))) + return -EFAULT; + + err = drm_agp_alloc(dev, &request); + if (err) + return err; if (copy_to_user(argp, &request, sizeof(request))) { - dev->agp->memory = entry->next; + drm_agp_mem_t *entry = dev->agp->memory; + + dev->agp->memory = entry->next; dev->agp->memory->prev = NULL; - drm_free_agp(memory, pages); + drm_free_agp(entry->memory, entry->pages); drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return -EFAULT; } + return 0; } @@ -240,11 +280,11 @@ 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; @@ -267,28 +307,37 @@ static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t *dev, * Verifies the AGP device is present and acquired, looks-up the AGP memory * 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) +int drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request) { - 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))) - return -EFAULT; - if (!(entry = drm_agp_lookup_entry(dev, request.handle))) + if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (!entry->bound) return -EINVAL; ret = drm_unbind_agp(entry->memory); if (ret == 0) - entry->bound = 0; + entry->bound = 0; return ret; } +EXPORT_SYMBOL(drm_agp_unbind); + +int drm_agp_unbind_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_binding_t request; + + if (copy_from_user + (&request, (drm_agp_binding_t __user *) arg, sizeof(request))) + return -EFAULT; + + return drm_agp_unbind(dev, &request); +} /** * Bind AGP memory into the GATT (ioctl) @@ -303,25 +352,19 @@ int drm_agp_unbind(struct inode *inode, struct file *filp, * is currently bound into the GATT. Looks-up the AGP memory entry and passes * it to bind_agp() function. */ -int drm_agp_bind(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) +int drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request) { - 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))) - return -EFAULT; - if (!(entry = drm_agp_lookup_entry(dev, request.handle))) + if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (entry->bound) return -EINVAL; - page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE; + page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE; if ((retcode = drm_bind_agp(entry->memory, page))) return retcode; entry->bound = dev->agp->base + (page << PAGE_SHIFT); @@ -329,6 +372,21 @@ int drm_agp_bind(struct inode *inode, struct file *filp, dev->agp->base, entry->bound); return 0; } +EXPORT_SYMBOL(drm_agp_bind); + +int drm_agp_bind_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_binding_t request; + + if (copy_from_user + (&request, (drm_agp_binding_t __user *) arg, sizeof(request))) + return -EFAULT; + + return drm_agp_bind(dev, &request); +} /** * Free AGP memory (ioctl). @@ -344,19 +402,13 @@ int drm_agp_bind(struct inode *inode, struct file *filp, * unbind_agp(). Frees it via free_agp() as well as the entry itself * 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) +int drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request) { - 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))) - return -EFAULT; - if (!(entry = drm_agp_lookup_entry(dev, request.handle))) + if (!(entry = drm_agp_lookup_entry(dev, request->handle))) return -EINVAL; if (entry->bound) drm_unbind_agp(entry->memory); @@ -373,16 +425,34 @@ int drm_agp_free(struct inode *inode, struct file *filp, drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return 0; } +EXPORT_SYMBOL(drm_agp_free); + +int drm_agp_free_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_buffer_t request; + + if (copy_from_user + (&request, (drm_agp_buffer_t __user *) arg, sizeof(request))) + return -EFAULT; + + return drm_agp_free(dev, &request); +} /** * Initialize the AGP resources. * * \return pointer to a drm_agp_head structure. * + * Gets the drm_agp_t structure which is made available by the agpgart module + * via the inter_module_* functions. Creates and initializes 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; @@ -403,25 +473,21 @@ drm_agp_head_t *drm_agp_init(drm_device_t *dev) return NULL; } head->memory = NULL; -#if LINUX_VERSION_CODE <= 0x020408 - head->cant_use_aperture = 0; - head->page_mask = ~(0xfff); -#else head->cant_use_aperture = head->agp_info.cant_use_aperture; head->page_mask = head->agp_info.page_mask; -#endif return head; } /** 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; @@ -430,7 +496,7 @@ 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; @@ -438,11 +504,11 @@ int drm_agp_bind_memory(DRM_AGP_MEM *handle, off_t start) } /** 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 */