| /* |
| * Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA. |
| * All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sub license, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| /* |
| * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com> |
| */ |
| |
| #include "drmP.h" |
| #include "via_drm.h" |
| #include "via_drv.h" |
| |
| #define VIA_MM_ALIGN_SHIFT 4 |
| #define VIA_MM_ALIGN_MASK ((1 << VIA_MM_ALIGN_SHIFT) - 1) |
| |
| struct via_memblock { |
| struct drm_mm_node mm_node; |
| struct list_head owner_list; |
| }; |
| |
| int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| { |
| drm_via_agp_t *agp = data; |
| drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; |
| |
| mutex_lock(&dev->struct_mutex); |
| drm_mm_init(&dev_priv->agp_mm, 0, agp->size >> VIA_MM_ALIGN_SHIFT); |
| |
| dev_priv->agp_initialized = 1; |
| dev_priv->agp_offset = agp->offset; |
| mutex_unlock(&dev->struct_mutex); |
| |
| DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size); |
| return 0; |
| } |
| |
| int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| { |
| drm_via_fb_t *fb = data; |
| drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; |
| |
| mutex_lock(&dev->struct_mutex); |
| drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> VIA_MM_ALIGN_SHIFT); |
| |
| dev_priv->vram_initialized = 1; |
| dev_priv->vram_offset = fb->offset; |
| |
| mutex_unlock(&dev->struct_mutex); |
| DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size); |
| |
| return 0; |
| |
| } |
| |
| int via_final_context(struct drm_device *dev, int context) |
| { |
| drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; |
| |
| via_release_futex(dev_priv, context); |
| |
| /* Linux specific until context tracking code gets ported to BSD */ |
| /* Last context, perform cleanup */ |
| if (dev->ctx_count == 1 && dev->dev_private) { |
| DRM_DEBUG("Last Context\n"); |
| drm_irq_uninstall(dev); |
| via_cleanup_futex(dev_priv); |
| via_do_cleanup_map(dev); |
| } |
| return 1; |
| } |
| |
| void via_lastclose(struct drm_device *dev) |
| { |
| drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; |
| |
| if (!dev_priv) |
| return; |
| |
| mutex_lock(&dev->struct_mutex); |
| if (dev_priv->vram_initialized) { |
| drm_mm_takedown(&dev_priv->vram_mm); |
| dev_priv->vram_initialized = 0; |
| } |
| if (dev_priv->agp_initialized) { |
| drm_mm_takedown(&dev_priv->agp_mm); |
| dev_priv->agp_initialized = 0; |
| } |
| mutex_unlock(&dev->struct_mutex); |
| } |
| |
| int via_mem_alloc(struct drm_device *dev, void *data, |
| struct drm_file *file) |
| { |
| drm_via_mem_t *mem = data; |
| int retval = 0, user_key; |
| struct via_memblock *item; |
| drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; |
| struct via_file_private *file_priv = file->driver_priv; |
| unsigned long tmpSize; |
| |
| if (mem->type > VIA_MEM_AGP) { |
| DRM_ERROR("Unknown memory type allocation\n"); |
| return -EINVAL; |
| } |
| mutex_lock(&dev->struct_mutex); |
| if (0 == ((mem->type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized : |
| dev_priv->agp_initialized)) { |
| DRM_ERROR |
| ("Attempt to allocate from uninitialized memory manager.\n"); |
| mutex_unlock(&dev->struct_mutex); |
| return -EINVAL; |
| } |
| |
| item = kzalloc(sizeof(*item), GFP_KERNEL); |
| if (!item) { |
| retval = -ENOMEM; |
| goto fail_alloc; |
| } |
| |
| tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT; |
| if (mem->type == VIA_MEM_AGP) |
| retval = drm_mm_insert_node(&dev_priv->agp_mm, |
| &item->mm_node, |
| tmpSize, 0); |
| else |
| retval = drm_mm_insert_node(&dev_priv->vram_mm, |
| &item->mm_node, |
| tmpSize, 0); |
| if (retval) |
| goto fail_alloc; |
| |
| again: |
| if (idr_pre_get(&dev_priv->object_idr, GFP_KERNEL) == 0) { |
| retval = -ENOMEM; |
| goto fail_idr; |
| } |
| |
| retval = idr_get_new_above(&dev_priv->object_idr, item, 1, &user_key); |
| if (retval == -EAGAIN) |
| goto again; |
| if (retval) |
| goto fail_idr; |
| |
| list_add(&item->owner_list, &file_priv->obj_list); |
| mutex_unlock(&dev->struct_mutex); |
| |
| mem->offset = ((mem->type == VIA_MEM_VIDEO) ? |
| dev_priv->vram_offset : dev_priv->agp_offset) + |
| ((item->mm_node.start) << VIA_MM_ALIGN_SHIFT); |
| mem->index = user_key; |
| |
| return 0; |
| |
| fail_idr: |
| drm_mm_remove_node(&item->mm_node); |
| fail_alloc: |
| kfree(item); |
| mutex_unlock(&dev->struct_mutex); |
| |
| mem->offset = 0; |
| mem->size = 0; |
| mem->index = 0; |
| DRM_DEBUG("Video memory allocation failed\n"); |
| |
| return retval; |
| } |
| |
| int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| { |
| drm_via_private_t *dev_priv = dev->dev_private; |
| drm_via_mem_t *mem = data; |
| struct via_memblock *obj; |
| int ret; |
| |
| mutex_lock(&dev->struct_mutex); |
| obj = idr_find(&dev_priv->object_idr, mem->index); |
| if (obj == NULL) { |
| mutex_unlock(&dev->struct_mutex); |
| return -EINVAL; |
| } |
| |
| idr_remove(&dev_priv->object_idr, mem->index); |
| list_del(&obj->owner_list); |
| drm_mm_remove_node(&obj->mm_node); |
| kfree(obj); |
| mutex_unlock(&dev->struct_mutex); |
| |
| DRM_DEBUG("free = 0x%lx\n", mem->index); |
| |
| return ret; |
| } |
| |
| |
| void via_reclaim_buffers_locked(struct drm_device *dev, |
| struct drm_file *file) |
| { |
| struct via_file_private *file_priv = file->driver_priv; |
| struct via_memblock *entry, *next; |
| |
| mutex_lock(&dev->struct_mutex); |
| if (list_empty(&file_priv->obj_list)) { |
| mutex_unlock(&dev->struct_mutex); |
| return; |
| } |
| |
| if (dev->driver->dma_quiescent) |
| dev->driver->dma_quiescent(dev); |
| |
| list_for_each_entry_safe(entry, next, &file_priv->obj_list, |
| owner_list) { |
| list_del(&entry->owner_list); |
| drm_mm_remove_node(&entry->mm_node); |
| kfree(entry); |
| } |
| mutex_unlock(&dev->struct_mutex); |
| return; |
| } |