diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_vram.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_vram.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_vram.c b/drivers/gpu/drm/nouveau/nvc0_vram.c new file mode 100644 index 0000000..858eda5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_vram.c @@ -0,0 +1,99 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs + */ + +#include "drmP.h" +#include "nouveau_drv.h" +#include "nouveau_mm.h" + +bool +nvc0_vram_flags_valid(struct drm_device *dev, u32 tile_flags) +{ + switch (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) { + case 0x0000: + case 0xfe00: + case 0xdb00: + case 0x1100: + return true; + default: + break; + } + + return false; +} + +int +nvc0_vram_new(struct drm_device *dev, u64 size, u32 align, u32 ncmin, + u32 type, struct nouveau_vram **pvram) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct ttm_bo_device *bdev = &dev_priv->ttm.bdev; + struct ttm_mem_type_manager *man = &bdev->man[TTM_PL_VRAM]; + struct nouveau_mm *mm = man->priv; + struct nouveau_mm_node *r; + struct nouveau_vram *vram; + int ret; + + size >>= 12; + align >>= 12; + ncmin >>= 12; + + vram = kzalloc(sizeof(*vram), GFP_KERNEL); + if (!vram) + return -ENOMEM; + + INIT_LIST_HEAD(&vram->regions); + vram->dev = dev_priv->dev; + vram->memtype = type; + vram->size = size; + + mutex_lock(&mm->mutex); + do { + ret = nouveau_mm_get(mm, 1, size, ncmin, align, &r); + if (ret) { + mutex_unlock(&mm->mutex); + nv50_vram_del(dev, &vram); + return ret; + } + + list_add_tail(&r->rl_entry, &vram->regions); + size -= r->length; + } while (size); + mutex_unlock(&mm->mutex); + + r = list_first_entry(&vram->regions, struct nouveau_mm_node, rl_entry); + vram->offset = (u64)r->offset << 12; + *pvram = vram; + return 0; +} + +int +nvc0_vram_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + + dev_priv->vram_size = nv_rd32(dev, 0x10f20c) << 20; + dev_priv->vram_size *= nv_rd32(dev, 0x121c74); + dev_priv->vram_rblock_size = 4096; + return 0; +} |