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Open source GPL/LGPL release

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svcmobrel-release
2022-07-21 16:03:29 -07:00
commit f338182221
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73
drivers/gpu/nvgpu/common/vbios/nvlink_bios.c Normal file
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/*
* 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;
}