diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/nvc0.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/nvc0.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nvc0.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nvc0.c new file mode 100644 index 000000000000..32f28dc73ef2 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nvc0.c @@ -0,0 +1,120 @@ +/* + * Copyright 2012 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 "nvc0.h" + +extern const u8 nvc0_pte_storage_type_map[256]; + +bool +nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags) +{ + u8 memtype = (tile_flags & 0x0000ff00) >> 8; + return likely((nvc0_pte_storage_type_map[memtype] != 0xff)); +} + +static void +nvc0_fb_intr(struct nouveau_subdev *subdev) +{ + struct nvc0_fb_priv *priv = (void *)subdev; + u32 intr = nv_rd32(priv, 0x000100); + if (intr & 0x08000000) { + nv_debug(priv, "PFFB intr\n"); + intr &= ~0x08000000; + } + if (intr & 0x00002000) { + nv_debug(priv, "PBFB intr\n"); + intr &= ~0x00002000; + } +} + +int +nvc0_fb_init(struct nouveau_object *object) +{ + struct nvc0_fb_priv *priv = (void *)object; + int ret; + + ret = nouveau_fb_init(&priv->base); + if (ret) + return ret; + + if (priv->r100c10_page) + nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); + nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */ + return 0; +} + +void +nvc0_fb_dtor(struct nouveau_object *object) +{ + struct nouveau_device *device = nv_device(object); + struct nvc0_fb_priv *priv = (void *)object; + + if (priv->r100c10_page) { + dma_unmap_page(nv_device_base(device), priv->r100c10, PAGE_SIZE, + DMA_BIDIRECTIONAL); + __free_page(priv->r100c10_page); + } + + nouveau_fb_destroy(&priv->base); +} + +int +nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_device *device = nv_device(parent); + struct nvc0_fb_priv *priv; + int ret; + + ret = nouveau_fb_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); + if (priv->r100c10_page) { + priv->r100c10 = dma_map_page(nv_device_base(device), + priv->r100c10_page, 0, PAGE_SIZE, + DMA_BIDIRECTIONAL); + if (dma_mapping_error(nv_device_base(device), priv->r100c10)) + return -EFAULT; + } + + nv_subdev(priv)->intr = nvc0_fb_intr; + return 0; +} + +struct nouveau_oclass * +nvc0_fb_oclass = &(struct nouveau_fb_impl) { + .base.handle = NV_SUBDEV(FB, 0xc0), + .base.ofuncs = &(struct nouveau_ofuncs) { + .ctor = nvc0_fb_ctor, + .dtor = nvc0_fb_dtor, + .init = nvc0_fb_init, + .fini = _nouveau_fb_fini, + }, + .memtype = nvc0_fb_memtype_valid, + .ram = &nvc0_ram_oclass, +}.base; |