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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"
#include "regsnv04.h"
const struct nvkm_ram_func
nv04_ram_func = {
};
int
nv04_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
{
struct nvkm_device *device = fb->subdev.device;
u32 boot0 = nvkm_rd32(device, NV04_PFB_BOOT_0);
u64 size;
enum nvkm_ram_type type;
if (boot0 & 0x00000100) {
size = ((boot0 >> 12) & 0xf) * 2 + 2;
size *= 1024 * 1024;
} else {
switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) {
case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB:
size = 32 * 1024 * 1024;
break;
case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB:
size = 16 * 1024 * 1024;
break;
case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB:
size = 8 * 1024 * 1024;
break;
case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB:
size = 4 * 1024 * 1024;
break;
}
}
if ((boot0 & 0x00000038) <= 0x10)
type = NVKM_RAM_TYPE_SGRAM;
else
type = NVKM_RAM_TYPE_SDRAM;
return nvkm_ram_new_(&nv04_ram_func, fb, type, size, 0, pram);
}
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