diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv20.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv20.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv20.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv20.c new file mode 100644 index 000000000..71d63d7da --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv20.c @@ -0,0 +1,48 @@ +/* + * Copyright 2013 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 "ram.h" + +int +nv20_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) +{ + struct nvkm_device *device = fb->subdev.device; + u32 pbus1218 = nvkm_rd32(device, 0x001218); + u32 size = (nvkm_rd32(device, 0x10020c) & 0xff000000); + enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN; + int ret; + + switch (pbus1218 & 0x00000300) { + case 0x00000000: type = NVKM_RAM_TYPE_SDRAM; break; + case 0x00000100: type = NVKM_RAM_TYPE_DDR1 ; break; + case 0x00000200: type = NVKM_RAM_TYPE_GDDR3; break; + case 0x00000300: type = NVKM_RAM_TYPE_GDDR2; break; + } + + ret = nvkm_ram_new_(&nv04_ram_func, fb, type, size, pram); + if (ret) + return ret; + + (*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1; + return 0; +} |