49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
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/*
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* Copyright 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "ram.h"
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int
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nv20_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
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{
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struct nvkm_device *device = fb->subdev.device;
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u32 pbus1218 = nvkm_rd32(device, 0x001218);
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u32 size = (nvkm_rd32(device, 0x10020c) & 0xff000000);
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enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN;
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int ret;
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switch (pbus1218 & 0x00000300) {
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case 0x00000000: type = NVKM_RAM_TYPE_SDRAM; break;
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case 0x00000100: type = NVKM_RAM_TYPE_DDR1 ; break;
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case 0x00000200: type = NVKM_RAM_TYPE_GDDR3; break;
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case 0x00000300: type = NVKM_RAM_TYPE_GDDR2; break;
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}
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ret = nvkm_ram_new_(&nv04_ram_func, fb, type, size, pram);
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if (ret)
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return ret;
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(*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1;
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return 0;
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}
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