mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2015-2020, NVIDIA CORPORATION. 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 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 AUTHORS OR COPYRIGHT HOLDERS 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 <nvgpu/gk20a.h>
|
|
#include <nvgpu/nvlink_bios.h>
|
|
#include <nvgpu/string.h>
|
|
#include <nvgpu/bios.h>
|
|
|
|
int nvgpu_bios_get_nvlink_config_data(struct gk20a *g)
|
|
{
|
|
int ret = 0;
|
|
struct nvlink_config_data_hdr_v1 config;
|
|
|
|
if (g->bios->nvlink_config_data_offset == 0U) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
nvgpu_memcpy((u8 *)&config,
|
|
&g->bios->data[g->bios->nvlink_config_data_offset],
|
|
sizeof(config));
|
|
|
|
if (config.version != NVLINK_CONFIG_DATA_HDR_VER_10) {
|
|
nvgpu_err(g, "unsupported nvlink bios version: 0x%x",
|
|
config.version);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (config.hdr_size) {
|
|
case NVLINK_CONFIG_DATA_HDR_12_SIZE:
|
|
g->nvlink.ac_coupling_mask = config.ac_coupling_mask;
|
|
g->nvlink.train_at_boot = config.train_at_boot;
|
|
g->nvlink.link_disable_mask = config.link_disable_mask;
|
|
g->nvlink.link_mode_mask = config.link_mode_mask;
|
|
g->nvlink.link_refclk_mask = config.link_refclk_mask;
|
|
break;
|
|
case NVLINK_CONFIG_DATA_HDR_11_SIZE:
|
|
g->nvlink.train_at_boot = config.train_at_boot;
|
|
g->nvlink.link_disable_mask = config.link_disable_mask;
|
|
g->nvlink.link_mode_mask = config.link_mode_mask;
|
|
g->nvlink.link_refclk_mask = config.link_refclk_mask;
|
|
break;
|
|
case NVLINK_CONFIG_DATA_HDR_10_SIZE:
|
|
g->nvlink.link_disable_mask = config.link_disable_mask;
|
|
g->nvlink.link_mode_mask = config.link_mode_mask;
|
|
g->nvlink.link_refclk_mask = config.link_refclk_mask;
|
|
break;
|
|
default:
|
|
nvgpu_err(g, "invalid nvlink bios config size");
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|