66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
|
/*
|
||
|
|
* 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, pram);
|
||
|
|
}
|