/*
* 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 "ramnv40.h"
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/init.h>
#include <subdev/bios/pll.h>
#include <subdev/clk/pll.h>
#include <subdev/timer.h>
static int
nv40_ram_calc(struct nvkm_ram *base, u32 freq)
{
struct nv40_ram *ram = nv40_ram(base);
struct nvkm_subdev *subdev = &ram->base.fb->subdev;
struct nvkm_bios *bios = subdev->device->bios;
struct nvbios_pll pll;
int N1, M1, N2, M2;
int log2P, ret;
ret = nvbios_pll_parse(bios, 0 x04, &pll);
if (ret) {
nvkm_error(subdev, "mclk pll data not found\n" );
return ret;
}
ret = nv04_pll_calc(subdev, &pll, freq, &N1, &M1, &N2, &M2, &log2P);
if (ret < 0 )
return ret;
ram->ctrl = 0 x80000000 | (log2P << 16 );
ram->ctrl |= min(pll.bias_p + log2P, (int )pll.max_p) << 20 ;
if (N2 == M2) {
ram->ctrl |= 0 x00000100;
ram->coef = (N1 << 8 ) | M1;
} else {
ram->ctrl |= 0 x40000000;
ram->coef = (N2 << 24 ) | (M2 << 16 ) | (N1 << 8 ) | M1;
}
return 0 ;
}
static int
nv40_ram_prog(struct nvkm_ram *base)
{
struct nv40_ram *ram = nv40_ram(base);
struct nvkm_subdev *subdev = &ram->base.fb->subdev;
struct nvkm_device *device = subdev->device;
struct nvkm_bios *bios = device->bios;
struct bit_entry M;
u32 crtc_mask = 0 ;
u8 sr1[2 ];
int i;
/* determine which CRTCs are active, fetch VGA_SR1 for each */
for (i = 0 ; i < 2 ; i++) {
u32 vbl = nvkm_rd32(device, 0 x600808 + (i * 0 x2000));
u32 cnt = 0 ;
do {
if (vbl != nvkm_rd32(device, 0 x600808 + (i * 0 x2000))) {
nvkm_wr08(device, 0 x0c03c4 + (i * 0 x2000), 0 x01);
sr1[i] = nvkm_rd08(device, 0 x0c03c5 + (i * 0 x2000));
if (!(sr1[i] & 0 x20))
crtc_mask |= (1 << i);
break ;
}
udelay(1 );
} while (cnt++ < 32 );
}
/* wait for vblank start on active crtcs, disable memory access */
for (i = 0 ; i < 2 ; i++) {
if (!(crtc_mask & (1 << i)))
continue ;
nvkm_msec(device, 2000 ,
u32 tmp = nvkm_rd32(device, 0 x600808 + (i * 0 x2000));
if (!(tmp & 0 x00010000))
break ;
);
nvkm_msec(device, 2000 ,
u32 tmp = nvkm_rd32(device, 0 x600808 + (i * 0 x2000));
if ( (tmp & 0 x00010000))
break ;
);
nvkm_wr08(device, 0 x0c03c4 + (i * 0 x2000), 0 x01);
nvkm_wr08(device, 0 x0c03c5 + (i * 0 x2000), sr1[i] | 0 x20);
}
/* prepare ram for reclocking */
nvkm_wr32(device, 0 x1002d4, 0 x00000001); /* precharge */
nvkm_wr32(device, 0 x1002d0, 0 x00000001); /* refresh */
nvkm_wr32(device, 0 x1002d0, 0 x00000001); /* refresh */
nvkm_mask(device, 0 x100210, 0 x80000000, 0 x00000000); /* no auto refresh */
nvkm_wr32(device, 0 x1002dc, 0 x00000001); /* enable self-refresh */
/* change the PLL of each memory partition */
nvkm_mask(device, 0 x00c040, 0 x0000c000, 0 x00000000);
switch (device->chipset) {
case 0 x40:
case 0 x45:
case 0 x41:
case 0 x42:
case 0 x47:
nvkm_mask(device, 0 x004044, 0 xc0771100, ram->ctrl);
nvkm_mask(device, 0 x00402c, 0 xc0771100, ram->ctrl);
nvkm_wr32(device, 0 x004048, ram->coef);
nvkm_wr32(device, 0 x004030, ram->coef);
fallthrough;
case 0 x43:
case 0 x49:
case 0 x4b:
nvkm_mask(device, 0 x004038, 0 xc0771100, ram->ctrl);
nvkm_wr32(device, 0 x00403c, ram->coef);
fallthrough;
default :
nvkm_mask(device, 0 x004020, 0 xc0771100, ram->ctrl);
nvkm_wr32(device, 0 x004024, ram->coef);
break ;
}
udelay(100 );
nvkm_mask(device, 0 x00c040, 0 x0000c000, 0 x0000c000);
/* re-enable normal operation of memory controller */
nvkm_wr32(device, 0 x1002dc, 0 x00000000);
nvkm_mask(device, 0 x100210, 0 x80000000, 0 x80000000);
udelay(100 );
/* execute memory reset script from vbios */
if (!bit_entry(bios, 'M' , &M))
nvbios_init(subdev, nvbios_rd16(bios, M.offset + 0 x00));
/* make sure we're in vblank (hopefully the same one as before), and
* then re - enable crtc memory access
*/
for (i = 0 ; i < 2 ; i++) {
if (!(crtc_mask & (1 << i)))
continue ;
nvkm_msec(device, 2000 ,
u32 tmp = nvkm_rd32(device, 0 x600808 + (i * 0 x2000));
if ( (tmp & 0 x00010000))
break ;
);
nvkm_wr08(device, 0 x0c03c4 + (i * 0 x2000), 0 x01);
nvkm_wr08(device, 0 x0c03c5 + (i * 0 x2000), sr1[i]);
}
return 0 ;
}
static void
nv40_ram_tidy(struct nvkm_ram *base)
{
}
static const struct nvkm_ram_func
nv40_ram_func = {
.calc = nv40_ram_calc,
.prog = nv40_ram_prog,
.tidy = nv40_ram_tidy,
};
int
nv40_ram_new_(struct nvkm_fb *fb, enum nvkm_ram_type type, u64 size,
struct nvkm_ram **pram)
{
struct nv40_ram *ram;
if (!(ram = kzalloc(sizeof (*ram), GFP_KERNEL)))
return -ENOMEM;
*pram = &ram->base;
return nvkm_ram_ctor(&nv40_ram_func, fb, type, size, &ram->base);
}
int
nv40_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
{
struct nvkm_device *device = fb->subdev.device;
u32 pbus1218 = nvkm_rd32(device, 0 x001218);
u32 size = nvkm_rd32(device, 0 x10020c) & 0 xff000000;
enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN;
int ret;
switch (pbus1218 & 0 x00000300) {
case 0 x00000000: type = NVKM_RAM_TYPE_SDRAM; break ;
case 0 x00000100: type = NVKM_RAM_TYPE_DDR1 ; break ;
case 0 x00000200: type = NVKM_RAM_TYPE_GDDR3; break ;
case 0 x00000300: type = NVKM_RAM_TYPE_DDR2 ; break ;
}
ret = nv40_ram_new_(fb, type, size, pram);
if (ret)
return ret;
(*pram)->parts = (nvkm_rd32(device, 0 x100200) & 0 x00000003) + 1 ;
return 0 ;
}
Messung V0.5 in Prozent C=95 H=89 G=91
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-07)
¤
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