/*
* 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>
#include <subdev/bios/pll.h>
#include <subdev/clk/pll.h>
#include <subdev/vga.h>
static void
nv04_devinit_meminit(struct nvkm_devinit *init)
{
struct nvkm_subdev *subdev = &init->subdev;
struct nvkm_device *device = subdev->device;
u32 patt = 0xdeadbeef;
struct io_mapping *fb;
int i;
/* Map the framebuffer aperture */
fb = fbmem_init(device);
if (!fb) {
nvkm_error(subdev, "failed to map fb\n");
return;
}
/* Sequencer and refresh off */
nvkm_wrvgas(device, 0, 1, nvkm_rdvgas(device, 0, 1) | 0x20);
nvkm_mask(device, NV04_PFB_DEBUG_0, 0, NV04_PFB_DEBUG_0_REFRESH_OFF);
nvkm_mask(device, NV04_PFB_BOOT_0, ~0,
NV04_PFB_BOOT_0_RAM_AMOUNT_16MB |
NV04_PFB_BOOT_0_RAM_WIDTH_128 |
NV04_PFB_BOOT_0_RAM_TYPE_SGRAM_16MBIT);
for (i = 0; i < 4; i++)
fbmem_poke(fb, 4 * i, patt);
fbmem_poke(fb, 0x400000, patt + 1);
if (fbmem_peek(fb, 0) == patt + 1) {
nvkm_mask(device, NV04_PFB_BOOT_0,
NV04_PFB_BOOT_0_RAM_TYPE,
NV04_PFB_BOOT_0_RAM_TYPE_SDRAM_16MBIT);
nvkm_mask(device, NV04_PFB_DEBUG_0,
NV04_PFB_DEBUG_0_REFRESH_OFF, 0);
for (i = 0; i < 4; i++)
fbmem_poke(fb, 4 * i, patt);
if ((fbmem_peek(fb, 0xc) & 0xffff) != (patt & 0xffff))
nvkm_mask(device, NV04_PFB_BOOT_0,
NV04_PFB_BOOT_0_RAM_WIDTH_128 |
NV04_PFB_BOOT_0_RAM_AMOUNT,
NV04_PFB_BOOT_0_RAM_AMOUNT_8MB);
} else
if ((fbmem_peek(fb, 0xc) & 0xffff0000) != (patt & 0xffff0000)) {
nvkm_mask(device, NV04_PFB_BOOT_0,
NV04_PFB_BOOT_0_RAM_WIDTH_128 |
NV04_PFB_BOOT_0_RAM_AMOUNT,
NV04_PFB_BOOT_0_RAM_AMOUNT_4MB);
} else
if (fbmem_peek(fb, 0) != patt) {
if (fbmem_readback(fb, 0x800000, patt))
nvkm_mask(device, NV04_PFB_BOOT_0,
NV04_PFB_BOOT_0_RAM_AMOUNT,
NV04_PFB_BOOT_0_RAM_AMOUNT_8MB);
else
nvkm_mask(device, NV04_PFB_BOOT_0,
NV04_PFB_BOOT_0_RAM_AMOUNT,
NV04_PFB_BOOT_0_RAM_AMOUNT_4MB);
nvkm_mask(device, NV04_PFB_BOOT_0, NV04_PFB_BOOT_0_RAM_TYPE,
NV04_PFB_BOOT_0_RAM_TYPE_SGRAM_8MBIT);
} else
if (!fbmem_readback(fb, 0x800000, patt)) {
nvkm_mask(device, NV04_PFB_BOOT_0, NV04_PFB_BOOT_0_RAM_AMOUNT,
NV04_PFB_BOOT_0_RAM_AMOUNT_8MB);
}
/* Refresh on, sequencer on */
nvkm_mask(device, NV04_PFB_DEBUG_0, NV04_PFB_DEBUG_0_REFRESH_OFF, 0);
nvkm_wrvgas(device, 0, 1, nvkm_rdvgas(device, 0, 1) & ~0x20);
fbmem_fini(fb);
}
static int
powerctrl_1_shift(int chip_version, int reg)
{
int shift = -4;
if (chip_version < 0x17 || chip_version == 0x1a || chip_version == 0x20)
return shift;
switch (reg) {
case 0x680520:
shift += 4; fallthrough;
case 0x680508:
shift += 4; fallthrough;
case 0x680504:
shift += 4; fallthrough;
case 0x680500:
shift += 4;
}
/*
* the shift for vpll regs is only used for nv3x chips with a single
* stage pll
*/
if (shift > 4 && (chip_version < 0x32 || chip_version == 0x35 ||
chip_version == 0x36 || chip_version >= 0x40))
shift = -4;
return shift;
}
void
setPLL_single(struct nvkm_devinit *init, u32 reg,
struct nvkm_pll_vals *pv)
{
struct nvkm_device *device = init->subdev.device;
int chip_version = device->bios->version.chip;
uint32_t oldpll = nvkm_rd32(device, reg);
int oldN = (oldpll >> 8) & 0xff, oldM = oldpll & 0xff;
uint32_t pll = (oldpll & 0xfff80000) | pv->log2P << 16 | pv->NM1;
uint32_t saved_powerctrl_1 = 0;
int shift_powerctrl_1 = powerctrl_1_shift(chip_version, reg);
if (oldpll == pll)
return; /* already set */
if (shift_powerctrl_1 >= 0) {
saved_powerctrl_1 = nvkm_rd32(device, 0x001584);
nvkm_wr32(device, 0x001584,
(saved_powerctrl_1 & ~(0xf << shift_powerctrl_1)) |
1 << shift_powerctrl_1);
}
if (oldM && pv->M1 && (oldN / oldM < pv->N1 / pv->M1))
/* upclock -- write new post divider first */
nvkm_wr32(device, reg, pv->log2P << 16 | (oldpll & 0xffff));
else
/* downclock -- write new NM first */
nvkm_wr32(device, reg, (oldpll & 0xffff0000) | pv->NM1);
if ((chip_version < 0x17 || chip_version == 0x1a) &&
chip_version != 0x11)
/* wait a bit on older chips */
msleep(64);
nvkm_rd32(device, reg);
/* then write the other half as well */
nvkm_wr32(device, reg, pll);
if (shift_powerctrl_1 >= 0)
nvkm_wr32(device, 0x001584, saved_powerctrl_1);
}
static uint32_t
new_ramdac580(uint32_t reg1, bool ss, uint32_t ramdac580)
{
bool head_a = (reg1 == 0x680508);
if (ss) /* single stage pll mode */
ramdac580 |= head_a ? 0x00000100 : 0x10000000;
else
ramdac580 &= head_a ? 0xfffffeff : 0xefffffff;
return ramdac580;
}
void
setPLL_double_highregs(struct nvkm_devinit *init, u32 reg1,
struct nvkm_pll_vals *pv)
{
struct nvkm_device *device = init->subdev.device;
int chip_version = device->bios->version.chip;
bool nv3035 = chip_version == 0x30 || chip_version == 0x35;
uint32_t reg2 = reg1 + ((reg1 == 0x680520) ? 0x5c : 0x70);
uint32_t oldpll1 = nvkm_rd32(device, reg1);
uint32_t oldpll2 = !nv3035 ? nvkm_rd32(device, reg2) : 0;
uint32_t pll1 = (oldpll1 & 0xfff80000) | pv->log2P << 16 | pv->NM1;
uint32_t pll2 = (oldpll2 & 0x7fff0000) | 1 << 31 | pv->NM2;
uint32_t oldramdac580 = 0, ramdac580 = 0;
bool single_stage = !pv->NM2 || pv->N2 == pv->M2; /* nv41+ only */
uint32_t saved_powerctrl_1 = 0, savedc040 = 0;
int shift_powerctrl_1 = powerctrl_1_shift(chip_version, reg1);
/* model specific additions to generic pll1 and pll2 set up above */
if (nv3035) {
pll1 = (pll1 & 0xfcc7ffff) | (pv->N2 & 0x18) << 21 |
(pv->N2 & 0x7) << 19 | 8 << 4 | (pv->M2 & 7) << 4;
pll2 = 0;
}
if (chip_version > 0x40 && reg1 >= 0x680508) { /* !nv40 */
oldramdac580 = nvkm_rd32(device, 0x680580);
ramdac580 = new_ramdac580(reg1, single_stage, oldramdac580);
if (oldramdac580 != ramdac580)
oldpll1 = ~0; /* force mismatch */
if (single_stage)
/* magic value used by nvidia in single stage mode */
pll2 |= 0x011f;
}
if (chip_version > 0x70)
/* magic bits set by the blob (but not the bios) on g71-73 */
pll1 = (pll1 & 0x7fffffff) | (single_stage ? 0x4 : 0xc) << 28;
if (oldpll1 == pll1 && oldpll2 == pll2)
return; /* already set */
if (shift_powerctrl_1 >= 0) {
saved_powerctrl_1 = nvkm_rd32(device, 0x001584);
nvkm_wr32(device, 0x001584,
(saved_powerctrl_1 & ~(0xf << shift_powerctrl_1)) |
1 << shift_powerctrl_1);
}
if (chip_version >= 0x40) {
int shift_c040 = 14;
switch (reg1) {
case 0x680504:
shift_c040 += 2; fallthrough;
case 0x680500:
shift_c040 += 2; fallthrough;
case 0x680520:
shift_c040 += 2; fallthrough;
case 0x680508:
shift_c040 += 2;
}
savedc040 = nvkm_rd32(device, 0xc040);
if (shift_c040 != 14)
nvkm_wr32(device, 0xc040, savedc040 & ~(3 << shift_c040));
}
if (oldramdac580 != ramdac580)
nvkm_wr32(device, 0x680580, ramdac580);
if (!nv3035)
nvkm_wr32(device, reg2, pll2);
nvkm_wr32(device, reg1, pll1);
if (shift_powerctrl_1 >= 0)
nvkm_wr32(device, 0x001584, saved_powerctrl_1);
if (chip_version >= 0x40)
nvkm_wr32(device, 0xc040, savedc040);
}
void
setPLL_double_lowregs(struct nvkm_devinit *init, u32 NMNMreg,
struct nvkm_pll_vals *pv)
{
/* When setting PLLs, there is a merry game of disabling and enabling
* various bits of hardware during the process. This function is a
* synthesis of six nv4x traces, nearly each card doing a subtly
* different thing. With luck all the necessary bits for each card are
* combined herein. Without luck it deviates from each card's formula
* so as to not work on any :)
*/
struct nvkm_device *device = init->subdev.device;
uint32_t Preg = NMNMreg - 4;
bool mpll = Preg == 0x4020;
uint32_t oldPval = nvkm_rd32(device, Preg);
uint32_t NMNM = pv->NM2 << 16 | pv->NM1;
uint32_t Pval = (oldPval & (mpll ? ~(0x77 << 16) : ~(7 << 16))) |
0xc << 28 | pv->log2P << 16;
uint32_t saved4600 = 0;
/* some cards have different maskc040s */
uint32_t maskc040 = ~(3 << 14), savedc040;
bool single_stage = !pv->NM2 || pv->N2 == pv->M2;
if (nvkm_rd32(device, NMNMreg) == NMNM && (oldPval & 0xc0070000) == Pval)
return;
if (Preg == 0x4000)
maskc040 = ~0x333;
if (Preg == 0x4058)
maskc040 = ~(0xc << 24);
if (mpll) {
struct nvbios_pll info;
uint8_t Pval2;
if (nvbios_pll_parse(device->bios, Preg, &info))
return;
Pval2 = pv->log2P + info.bias_p;
if (Pval2 > info.max_p)
Pval2 = info.max_p;
Pval |= 1 << 28 | Pval2 << 20;
saved4600 = nvkm_rd32(device, 0x4600);
nvkm_wr32(device, 0x4600, saved4600 | 8 << 28);
}
if (single_stage)
Pval |= mpll ? 1 << 12 : 1 << 8;
nvkm_wr32(device, Preg, oldPval | 1 << 28);
nvkm_wr32(device, Preg, Pval & ~(4 << 28));
if (mpll) {
Pval |= 8 << 20;
nvkm_wr32(device, 0x4020, Pval & ~(0xc << 28));
nvkm_wr32(device, 0x4038, Pval & ~(0xc << 28));
}
savedc040 = nvkm_rd32(device, 0xc040);
nvkm_wr32(device, 0xc040, savedc040 & maskc040);
nvkm_wr32(device, NMNMreg, NMNM);
if (NMNMreg == 0x4024)
nvkm_wr32(device, 0x403c, NMNM);
nvkm_wr32(device, Preg, Pval);
if (mpll) {
Pval &= ~(8 << 20);
nvkm_wr32(device, 0x4020, Pval);
nvkm_wr32(device, 0x4038, Pval);
nvkm_wr32(device, 0x4600, saved4600);
}
nvkm_wr32(device, 0xc040, savedc040);
if (mpll) {
nvkm_wr32(device, 0x4020, Pval & ~(1 << 28));
nvkm_wr32(device, 0x4038, Pval & ~(1 << 28));
}
}
int
nv04_devinit_pll_set(struct nvkm_devinit *devinit, u32 type, u32 freq)
{
struct nvkm_subdev *subdev = &devinit->subdev;
struct nvkm_bios *bios = subdev->device->bios;
struct nvkm_pll_vals pv;
struct nvbios_pll info;
int cv = bios->version.chip;
int N1, M1, N2, M2, P;
int ret;
ret = nvbios_pll_parse(bios, type > 0x405c ? type : type - 4, &info);
if (ret)
return ret;
ret = nv04_pll_calc(subdev, &info, freq, &N1, &M1, &N2, &M2, &P);
if (!ret)
return -EINVAL;
pv.refclk = info.refclk;
pv.N1 = N1;
pv.M1 = M1;
pv.N2 = N2;
pv.M2 = M2;
pv.log2P = P;
if (cv == 0x30 || cv == 0x31 || cv == 0x35 || cv == 0x36 ||
cv >= 0x40) {
if (type > 0x405c)
setPLL_double_highregs(devinit, type, &pv);
else
setPLL_double_lowregs(devinit, type, &pv);
} else
setPLL_single(devinit, type, &pv);
return 0;
}
int
nv04_devinit_post(struct nvkm_devinit *init, bool execute)
{
return nvbios_post(&init->subdev, execute);
}
void
nv04_devinit_preinit(struct nvkm_devinit *base)
{
struct nv04_devinit *init = nv04_devinit(base);
struct nvkm_subdev *subdev = &init->base.subdev;
struct nvkm_device *device = subdev->device;
/* make i2c busses accessible */
nvkm_mask(device, 0x000200, 0x00000001, 0x00000001);
/* unslave crtcs */
if (init->owner < 0)
init->owner = nvkm_rdvgaowner(device);
nvkm_wrvgaowner(device, 0);
if (!init->base.post) {
u32 htotal = nvkm_rdvgac(device, 0, 0x06);
htotal |= (nvkm_rdvgac(device, 0, 0x07) & 0x01) << 8;
htotal |= (nvkm_rdvgac(device, 0, 0x07) & 0x20) << 4;
htotal |= (nvkm_rdvgac(device, 0, 0x25) & 0x01) << 10;
htotal |= (nvkm_rdvgac(device, 0, 0x41) & 0x01) << 11;
if (!htotal) {
nvkm_debug(subdev, "adaptor not initialised\n");
init->base.post = true;
}
}
}
void *
nv04_devinit_dtor(struct nvkm_devinit *base)
{
struct nv04_devinit *init = nv04_devinit(base);
/* restore vga owner saved at first init */
nvkm_wrvgaowner(init->base.subdev.device, init->owner);
return init;
}
int
nv04_devinit_new_(const struct nvkm_devinit_func *func, struct nvkm_device *device,
enum nvkm_subdev_type type, int inst, struct nvkm_devinit **pinit)
{
struct nv04_devinit *init;
if (!(init = kzalloc(sizeof(*init), GFP_KERNEL)))
return -ENOMEM;
*pinit = &init->base;
nvkm_devinit_ctor(func, device, type, inst, &init->base);
init->owner = -1;
return 0;
}
static const struct nvkm_devinit_func
nv04_devinit = {
.dtor = nv04_devinit_dtor,
.preinit = nv04_devinit_preinit,
.post = nv04_devinit_post,
.meminit = nv04_devinit_meminit,
.pll_set = nv04_devinit_pll_set,
};
int
nv04_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_devinit **pinit)
{
return nv04_devinit_new_(&nv04_devinit, device, type, inst, pinit);
}
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