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