diff options
Diffstat (limited to 'drivers/gpu/drm/via/via_mm.c')
| -rw-r--r-- | drivers/gpu/drm/via/via_mm.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/gpu/drm/via/via_mm.c b/drivers/gpu/drm/via/via_mm.c new file mode 100644 index 0000000..e640949 --- /dev/null +++ b/drivers/gpu/drm/via/via_mm.c @@ -0,0 +1,194 @@ +/* + * 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" +#include "drm_sman.h" + +#define VIA_MM_ALIGN_SHIFT 4 +#define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1) + +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; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0, + agp->size >> VIA_MM_ALIGN_SHIFT); + + if (ret) { + DRM_ERROR("AGP memory manager initialisation error\n"); + mutex_unlock(&dev->struct_mutex); + return ret; + } + + 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; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0, + fb->size >> VIA_MM_ALIGN_SHIFT); + + if (ret) { + DRM_ERROR("VRAM memory manager initialisation error\n"); + mutex_unlock(&dev->struct_mutex); + return ret; + } + + 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"); + if (dev->irq) + 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); + drm_sman_cleanup(&dev_priv->sman); + dev_priv->vram_initialized = 0; + dev_priv->agp_initialized = 0; + mutex_unlock(&dev->struct_mutex); +} + +int via_mem_alloc(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_via_mem_t *mem = data; + int retval = 0; + struct drm_memblock_item *item; + drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; + 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; + } + + tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT; + item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0, + (unsigned long)file_priv); + mutex_unlock(&dev->struct_mutex); + if (item) { + mem->offset = ((mem->type == VIA_MEM_VIDEO) ? + dev_priv->vram_offset : dev_priv->agp_offset) + + (item->mm-> + offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT); + mem->index = item->user_hash.key; + } else { + mem->offset = 0; + mem->size = 0; + mem->index = 0; + DRM_DEBUG("Video memory allocation failed\n"); + retval = -ENOMEM; + } + + 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; + int ret; + + mutex_lock(&dev->struct_mutex); + ret = drm_sman_free_key(&dev_priv->sman, mem->index); + 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_priv) +{ + drm_via_private_t *dev_priv = dev->dev_private; + + mutex_lock(&dev->struct_mutex); + if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv)) { + mutex_unlock(&dev->struct_mutex); + return; + } + + if (dev->driver->dma_quiescent) { + dev->driver->dma_quiescent(dev); + } + + drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv); + mutex_unlock(&dev->struct_mutex); + return; +} |
