/*
* Copyright 2021 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 .
*/
#include "priv.h"
#include <subdev/gsp.h>
static void
ga102_gpio_reset(struct nvkm_gpio *gpio, u8 match)
{
struct nvkm_device *device = gpio->subdev.device;
struct nvkm_bios *bios = device->bios;
u8 ver, len;
u16 entry;
int ent = -1 ;
while ((entry = dcb_gpio_entry(bios, 0 , ++ent, &ver, &len))) {
u32 data = nvbios_rd32(bios, entry);
u8 line = (data & 0 x0000003f);
u8 defs = !!(data & 0 x00000080);
u8 func = (data & 0 x0000ff00) >> 8 ;
u8 unk0 = (data & 0 x00ff0000) >> 16 ;
u8 unk1 = (data & 0 x1f000000) >> 24 ;
if ( func == DCB_GPIO_UNUSED ||
(match != DCB_GPIO_UNUSED && match != func))
continue ;
nvkm_gpio_set(gpio, 0 , func, line, defs);
nvkm_mask(device, 0 x021200 + (line * 4 ), 0 xff, unk0);
if (unk1--)
nvkm_mask(device, 0 x00d740 + (unk1 * 4 ), 0 xff, line);
}
}
static int
ga102_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)
{
struct nvkm_device *device = gpio->subdev.device;
u32 data = ((dir ^ 1 ) << 13 ) | (out << 12 );
nvkm_mask(device, 0 x021200 + (line * 4 ), 0 x00003000, data);
nvkm_mask(device, 0 x00d604, 0 x00000001, 0 x00000001); /* update? */
return 0 ;
}
static int
ga102_gpio_sense(struct nvkm_gpio *gpio, int line)
{
struct nvkm_device *device = gpio->subdev.device;
return !!(nvkm_rd32(device, 0 x021200 + (line * 4 )) & 0 x00004000);
}
static void
ga102_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
{
struct nvkm_device *device = gpio->subdev.device;
u32 intr0 = nvkm_rd32(device, 0 x021640);
u32 intr1 = nvkm_rd32(device, 0 x02164c);
u32 stat0 = nvkm_rd32(device, 0 x021648) & intr0;
u32 stat1 = nvkm_rd32(device, 0 x021654) & intr1;
*lo = (stat1 & 0 xffff0000) | (stat0 >> 16 );
*hi = (stat1 << 16 ) | (stat0 & 0 x0000ffff);
nvkm_wr32(device, 0 x021640, intr0);
nvkm_wr32(device, 0 x02164c, intr1);
}
static void
ga102_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
{
struct nvkm_device *device = gpio->subdev.device;
u32 inte0 = nvkm_rd32(device, 0 x021648);
u32 inte1 = nvkm_rd32(device, 0 x021654);
if (type & NVKM_GPIO_LO)
inte0 = (inte0 & ~(mask << 16 )) | (data << 16 );
if (type & NVKM_GPIO_HI)
inte0 = (inte0 & ~(mask & 0 xffff)) | (data & 0 xffff);
mask >>= 16 ;
data >>= 16 ;
if (type & NVKM_GPIO_LO)
inte1 = (inte1 & ~(mask << 16 )) | (data << 16 );
if (type & NVKM_GPIO_HI)
inte1 = (inte1 & ~mask) | data;
nvkm_wr32(device, 0 x021648, inte0);
nvkm_wr32(device, 0 x021654, inte1);
}
static const struct nvkm_gpio_func
ga102_gpio = {
.lines = 32 ,
.intr_stat = ga102_gpio_intr_stat,
.intr_mask = ga102_gpio_intr_mask,
.drive = ga102_gpio_drive,
.sense = ga102_gpio_sense,
.reset = ga102_gpio_reset,
};
int
ga102_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_gpio **pgpio)
{
if (nvkm_gsp_rm(device->gsp))
return -ENODEV;
return nvkm_gpio_new_(&ga102_gpio, device, type, inst, pgpio);
}
Messung V0.5 in Prozent C=99 H=96 G=97
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-07)
¤
*© Formatika GbR, Deutschland