From 6bacb180cef00573fc41a1e79bdd5b89d6f1c1f5 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 6 Jun 2006 14:19:00 +0000 Subject: Merge in the drm-sman-branch --- linux-core/via_mm.c | 203 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 linux-core/via_mm.c (limited to 'linux-core/via_mm.c') diff --git a/linux-core/via_mm.c b/linux-core/via_mm.c new file mode 100644 index 00000000..2881a1d1 --- /dev/null +++ b/linux-core/via_mm.c @@ -0,0 +1,203 @@ +/* + * 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); + + down(&dev->struct_sem); + drm_sman_cleanup(&dev_priv->sman); + dev_priv->vram_initialized = FALSE; + dev_priv->agp_initialized = FALSE; + up(&dev->struct_sem); + } +#endif + + return 1; +} + +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_ERROR("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; +} -- cgit v1.2.3