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/*
* 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);
u32 tags = nvkm_rd32(device, 0x100320);
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, tags, pram);
if (ret)
return ret;
(*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1;
return 0;
}
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