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/*
* Copyright (C) 2010 Francisco Jerez.
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#include "nv04.h"
#include "fbmem.h"
#include <subdev/bios.h>
#include <subdev/bios/init.h>
static void
nv10_devinit_meminit(struct nvkm_devinit *init)
{
struct nvkm_subdev *subdev = &init->subdev;
struct nvkm_device *device = subdev->device;
static const int mem_width[] = { 0x10, 0x00, 0x20 };
int mem_width_count;
uint32_t patt = 0xdeadbeef;
struct io_mapping *fb;
int i, j, k;
if (device->card_type >= NV_11 && device->chipset >= 0x17)
mem_width_count = 3;
else
mem_width_count = 2;
/* Map the framebuffer aperture */
fb = fbmem_init(device);
if (!fb) {
nvkm_error(subdev, "failed to map fb\n");
return;
}
nvkm_wr32(device, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
/* Probe memory bus width */
for (i = 0; i < mem_width_count; i++) {
nvkm_mask(device, NV04_PFB_CFG0, 0x30, mem_width[i]);
for (j = 0; j < 4; j++) {
for (k = 0; k < 4; k++)
fbmem_poke(fb, 0x1c, 0);
fbmem_poke(fb, 0x1c, patt);
fbmem_poke(fb, 0x3c, 0);
if (fbmem_peek(fb, 0x1c) == patt)
goto mem_width_found;
}
}
mem_width_found:
patt <<= 1;
/* Probe amount of installed memory */
for (i = 0; i < 4; i++) {
int off = nvkm_rd32(device, 0x10020c) - 0x100000;
fbmem_poke(fb, off, patt);
fbmem_poke(fb, 0, 0);
fbmem_peek(fb, 0);
fbmem_peek(fb, 0);
fbmem_peek(fb, 0);
fbmem_peek(fb, 0);
if (fbmem_peek(fb, off) == patt)
goto amount_found;
}
/* IC missing - disable the upper half memory space. */
nvkm_mask(device, NV04_PFB_CFG0, 0x1000, 0);
amount_found:
fbmem_fini(fb);
}
struct nvkm_oclass *
nv10_devinit_oclass = &(struct nvkm_devinit_impl) {
.base.handle = NV_SUBDEV(DEVINIT, 0x10),
.base.ofuncs = &(struct nvkm_ofuncs) {
.ctor = nv04_devinit_ctor,
.dtor = nv04_devinit_dtor,
.init = nv04_devinit_init,
.fini = nv04_devinit_fini,
},
.meminit = nv10_devinit_meminit,
.pll_set = nv04_devinit_pll_set,
.post = nvbios_init,
}.base;
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