/* * 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 */ #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(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_via_agp_t agp; drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; int ret; DRM_COPY_FROM_USER_IOCTL(agp, (drm_via_agp_t __user *) data, sizeof(agp)); down(&dev->struct_sem); 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"); up(&dev->struct_sem); return ret; } dev_priv->agp_initialized = TRUE; dev_priv->agp_offset = agp.offset; up(&dev->struct_sem); DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size); return 0; } int via_fb_init(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_via_fb_t fb; drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; int ret; DRM_COPY_FROM_USER_IOCTL(fb, (drm_via_fb_t __user *) data, sizeof(fb)); down(&dev->struct_sem); 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"); up(&dev->struct_sem); return ret; } dev_priv->vram_initialized = TRUE; dev_priv->vram_offset = fb.offset; up(&dev->struct_sem); DRM_DEBUG("offset = %u, size = %u", 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); #if defined(__linux__) /* 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); } #endif 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; down(&dev->struct_sem); drm_sman_cleanup(&dev_priv->sman); dev_priv->vram_initialized = FALSE; dev_priv->agp_initialized = FALSE; up(&dev->struct_sem); } int via_mem_alloc(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_via_mem_t mem; int retval = 0; drm_memblock_item_t *item; drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data, sizeof(mem)); if (mem.type > VIA_MEM_AGP) { DRM_ERROR("Unknown memory type allocation\n"); return DRM_ERR(EINVAL); } down(&dev->struct_sem); if (FALSE == ((mem.type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized : dev_priv->agp_initialized)) { DRM_ERROR ("Attempt to allocate from uninitialized memory manager.\n"); up(&dev->struct_sem); return DRM_ERR(EINVAL); } mem.size = (mem.size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT; item = drm_sman_alloc(&dev_priv->sman, mem.type, mem.size, 0, (unsigned long)priv); up(&dev->struct_sem); 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; mem.size = mem.size << VIA_MM_ALIGN_SHIFT; } else { mem.offset = 0; mem.size = 0; mem.index = 0; DRM_DEBUG("Video memory allocation failed\n"); retval = DRM_ERR(ENOMEM); } DRM_COPY_TO_USER_IOCTL((drm_via_mem_t __user *) data, mem, sizeof(mem)); return retval; } int via_mem_free(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_via_private_t *dev_priv = dev->dev_private; drm_via_mem_t mem; int ret; DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data, sizeof(mem)); down(&dev->struct_sem); ret = drm_sman_free_key(&dev_priv->sman, mem.index); up(&dev->struct_sem); DRM_DEBUG("free = 0x%lx\n", mem.index); return ret; } void via_reclaim_buffers_locked(drm_device_t * dev, struct file *filp) { drm_via_private_t *dev_priv = dev->dev_private; drm_file_t *priv = filp->private_data; down(&dev->struct_sem); if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) { up(&dev->struct_sem); return; } if (dev->driver->dma_quiescent) { dev->driver->dma_quiescent(dev); } drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv); up(&dev->struct_sem); return; }