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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 "nv50.h"
#include <subdev/bios.h>
#include <subdev/bios/dcb.h>
#include <subdev/bios/disp.h>
#include <subdev/bios/init.h>
#include <subdev/bios/pll.h>
#include <subdev/clk/pll.h>
#include <subdev/vga.h>
int
nv50_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
{
struct nvkm_subdev *subdev = &init->subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_bios *bios = device->bios;
struct nvbios_pll info;
int N1, M1, N2, M2, P;
int ret;
ret = nvbios_pll_parse(bios, type, &info);
if (ret) {
nvkm_error(subdev, "failed to retrieve pll data, %d\n", ret);
return ret;
}
ret = nv04_pll_calc(subdev, &info, freq, &N1, &M1, &N2, &M2, &P);
if (!ret) {
nvkm_error(subdev, "failed pll calculation\n");
return -EINVAL;
}
switch (info.type) {
case PLL_VPLL0:
case PLL_VPLL1:
nvkm_wr32(device, info.reg + 0, 0x10000611);
nvkm_mask(device, info.reg + 4, 0x00ff00ff, (M1 << 16) | N1);
nvkm_mask(device, info.reg + 8, 0x7fff00ff, (P << 28) |
(M2 << 16) | N2);
break;
case PLL_MEMORY:
nvkm_mask(device, info.reg + 0, 0x01ff0000,
(P << 22) |
(info.bias_p << 19) |
(P << 16));
nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1);
break;
default:
nvkm_mask(device, info.reg + 0, 0x00070000, (P << 16));
nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1);
break;
}
return 0;
}
static u64
nv50_devinit_disable(struct nvkm_devinit *init)
{
struct nvkm_device *device = init->subdev.device;
u32 r001540 = nvkm_rd32(device, 0x001540);
u64 disable = 0ULL;
if (!(r001540 & 0x40000000))
disable |= (1ULL << NVKM_ENGINE_MPEG);
return disable;
}
void
nv50_devinit_preinit(struct nvkm_devinit *base)
{
struct nvkm_subdev *subdev = &base->subdev;
struct nvkm_device *device = subdev->device;
/* our heuristics can't detect whether the board has had its
* devinit scripts executed or not if the display engine is
* missing, assume it's a secondary gpu which requires post
*/
if (!base->post) {
u64 disable = nvkm_devinit_disable(base);
if (disable & (1ULL << NVKM_ENGINE_DISP))
base->post = true;
}
/* magic to detect whether or not x86 vbios code has executed
* the devinit scripts to initialise the board
*/
if (!base->post) {
if (!nvkm_rdvgac(device, 0, 0x00) &&
!nvkm_rdvgac(device, 0, 0x1a)) {
nvkm_debug(subdev, "adaptor not initialised\n");
base->post = true;
}
}
}
void
nv50_devinit_init(struct nvkm_devinit *base)
{
struct nv50_devinit *init = nv50_devinit(base);
struct nvkm_subdev *subdev = &init->base.subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_bios *bios = device->bios;
struct nvbios_outp info;
struct dcb_output outp;
u8 ver = 0xff, hdr, cnt, len;
int i = 0;
/* if we ran the init tables, we have to execute the first script
* pointer of each dcb entry's display encoder table in order
* to properly initialise each encoder.
*/
while (init->base.post && dcb_outp_parse(bios, i, &ver, &hdr, &outp)) {
if (nvbios_outp_match(bios, outp.hasht, outp.hashm,
&ver, &hdr, &cnt, &len, &info)) {
struct nvbios_init exec = {
.subdev = subdev,
.bios = bios,
.offset = info.script[0],
.outp = &outp,
.crtc = -1,
.execute = 1,
};
nvbios_exec(&exec);
}
i++;
}
}
int
nv50_devinit_new_(const struct nvkm_devinit_func *func,
struct nvkm_device *device, int index,
struct nvkm_devinit **pinit)
{
struct nv50_devinit *init;
if (!(init = kzalloc(sizeof(*init), GFP_KERNEL)))
return -ENOMEM;
*pinit = &init->base;
nvkm_devinit_ctor(func, device, index, &init->base);
return 0;
}
static const struct nvkm_devinit_func
nv50_devinit = {
.preinit = nv50_devinit_preinit,
.init = nv50_devinit_init,
.post = nv04_devinit_post,
.pll_set = nv50_devinit_pll_set,
.disable = nv50_devinit_disable,
};
int
nv50_devinit_new(struct nvkm_device *device, int index,
struct nvkm_devinit **pinit)
{
return nv50_devinit_new_(&nv50_devinit, device, index, pinit);
}
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