From 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 15 Dec 2015 14:52:16 -0300 Subject: Linux-libre 4.3.2-gnu --- drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c | 100 +++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c') diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c new file mode 100644 index 000000000..c17d559db --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.c @@ -0,0 +1,100 @@ +/* + * Copyright 2015 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 +nvkm_ram_init(struct nvkm_ram *ram) +{ + if (ram->func->init) + return ram->func->init(ram); + return 0; +} + +void +nvkm_ram_del(struct nvkm_ram **pram) +{ + struct nvkm_ram *ram = *pram; + if (ram && !WARN_ON(!ram->func)) { + if (ram->func->dtor) + *pram = ram->func->dtor(ram); + nvkm_mm_fini(&ram->tags); + nvkm_mm_fini(&ram->vram); + kfree(*pram); + *pram = NULL; + } +} + +int +nvkm_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb, + enum nvkm_ram_type type, u64 size, u32 tags, + struct nvkm_ram *ram) +{ + static const char *name[] = { + [NVKM_RAM_TYPE_UNKNOWN] = "of unknown memory type", + [NVKM_RAM_TYPE_STOLEN ] = "stolen system memory", + [NVKM_RAM_TYPE_SGRAM ] = "SGRAM", + [NVKM_RAM_TYPE_SDRAM ] = "SDRAM", + [NVKM_RAM_TYPE_DDR1 ] = "DDR1", + [NVKM_RAM_TYPE_DDR2 ] = "DDR2", + [NVKM_RAM_TYPE_DDR3 ] = "DDR3", + [NVKM_RAM_TYPE_GDDR2 ] = "GDDR2", + [NVKM_RAM_TYPE_GDDR3 ] = "GDDR3", + [NVKM_RAM_TYPE_GDDR4 ] = "GDDR4", + [NVKM_RAM_TYPE_GDDR5 ] = "GDDR5", + }; + struct nvkm_subdev *subdev = &fb->subdev; + int ret; + + nvkm_info(subdev, "%d MiB %s\n", (int)(size >> 20), name[type]); + ram->func = func; + ram->fb = fb; + ram->type = type; + ram->size = size; + + if (!nvkm_mm_initialised(&ram->vram)) { + ret = nvkm_mm_init(&ram->vram, 0, size >> NVKM_RAM_MM_SHIFT, 1); + if (ret) + return ret; + } + + if (!nvkm_mm_initialised(&ram->tags)) { + ret = nvkm_mm_init(&ram->tags, 0, tags ? ++tags : 0, 1); + if (ret) + return ret; + + nvkm_debug(subdev, "%d compression tags\n", tags); + } + + return 0; +} + +int +nvkm_ram_new_(const struct nvkm_ram_func *func, struct nvkm_fb *fb, + enum nvkm_ram_type type, u64 size, u32 tags, + struct nvkm_ram **pram) +{ + if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL))) + return -ENOMEM; + return nvkm_ram_ctor(func, fb, type, size, tags, *pram); +} -- cgit v1.2.3-54-g00ecf