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This commit is contained in:
Andy Ritger
2023-01-19 10:41:59 -08:00
parent dac2350c7f
commit 811073c51e
90 changed files with 1937 additions and 668 deletions
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128
src/common/nvswitch/kernel/ls10/link_ls10.c
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: Copyright (c) 2020-2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-FileCopyrightText: Copyright (c) 2020-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -496,6 +496,34 @@ nvswitch_corelib_get_rx_detect_ls10
return NVL_SUCCESS;
}
static NvBool
_nvswitch_is_tlc_in_reset
(
nvswitch_device *device,
nvlink_link *link
)
{
NvU32 clkStatus;
clkStatus = NVSWITCH_LINK_RD32_LS10(device, link->linkNumber,
NVLIPT_LNK, _NVLIPT_LNK, _CTRL_CLK_CTRL);
//
// TLC is in reset if any of the per-link clocks are off
// -- if TX and RX clocks are off then link is not powered on
// -- if TX/RX clocks are on but NCISOC clock is off, DL layer
// is on but TLC is still off
//
if (FLD_TEST_DRF(_NVLIPT_LNK, _CTRL_CLK_CTRL, _RXCLK_STS, _OFF, clkStatus) ||
FLD_TEST_DRF(_NVLIPT_LNK, _CTRL_CLK_CTRL, _TXCLK_STS, _OFF, clkStatus) ||
FLD_TEST_DRF(_NVLIPT_LNK, _CTRL_CLK_CTRL, _NCISOCCLK_STS, _OFF, clkStatus))
{
return NV_TRUE;
}
return NV_FALSE;
}
void
nvswitch_reset_persistent_link_hw_state_ls10
(
@@ -509,14 +537,21 @@ nvswitch_reset_persistent_link_hw_state_ls10
return;
}
// SETUPTC called with HW Reset
(void)nvswitch_minion_send_command(device, linkNumber, NV_MINION_NVLINK_DL_CMD_COMMAND_SETUPTC , 0x4);
// clear TLC TP Counters
(void)nvswitch_minion_send_command(device, linkNumber, NV_MINION_NVLINK_DL_CMD_COMMAND_CLR_TLC_MISC_REGS, 0);
// clear DL error counters
(void)nvswitch_minion_send_command(device, linkNumber, NV_MINION_NVLINK_DL_CMD_COMMAND_DLSTAT_CLR_DLERRCNT, 0);
// If TLC is not up then return
if (_nvswitch_is_tlc_in_reset(device, link))
{
return;
}
// SETUPTC called to reset and setup throughput counters
(void)nvswitch_minion_send_command(device, linkNumber, NV_MINION_NVLINK_DL_CMD_COMMAND_SETUPTC , 0x4);
// clear miscellaneous TLC counters and registers
(void)nvswitch_minion_send_command(device, linkNumber, NV_MINION_NVLINK_DL_CMD_COMMAND_CLR_TLC_MISC_REGS, 0);
}
NvlStatus
@@ -1469,3 +1504,82 @@ nvswitch_execute_unilateral_link_shutdown_ls10
return;
}
NvlStatus
nvswitch_reset_and_train_link_ls10
(
nvswitch_device *device,
nvlink_link *link
)
{
NvlStatus status = NVL_SUCCESS;
NvU32 retry_count = 3;
NvU32 link_state_request;
NvU32 link_state;
NvU32 stat_data;
NvU32 link_intr_subcode;
nvswitch_execute_unilateral_link_shutdown_ls10(link);
nvswitch_corelib_clear_link_state_ls10(link);
do
{
status = nvswitch_request_tl_link_state_ls10(link,
NV_NVLIPT_LNK_CTRL_LINK_STATE_REQUEST_REQUEST_RESET, NV_TRUE);
if (status == NVL_SUCCESS)
{
break;
}
else
{
link_state_request = NVSWITCH_LINK_RD32_LS10(device, link->linkNumber,
NVLIPT_LNK , _NVLIPT_LNK , _CTRL_LINK_STATE_REQUEST);
link_state = DRF_VAL(_NVLIPT_LNK, _CTRL_LINK_STATE_REQUEST, _STATUS,
link_state_request);
if (nvswitch_minion_get_dl_status(device, link->linkNumber,
NV_NVLSTAT_MN00, 0, &stat_data) == NVL_SUCCESS)
{
link_intr_subcode = DRF_VAL(_NVLSTAT, _MN00, _LINK_INTR_SUBCODE, stat_data);
}
if ((link_state == NV_NVLIPT_LNK_CTRL_LINK_STATE_REQUEST_STATUS_MINION_REQUEST_FAIL) &&
(link_intr_subcode == MINION_ALARM_BUSY))
{
status = nvswitch_request_tl_link_state_ls10(link,
NV_NVLIPT_LNK_CTRL_LINK_STATE_REQUEST_REQUEST_RESET, NV_TRUE);
//
// We retry the shutdown sequence 3 times when we see a MINION_REQUEST_FAIL
// or MINION_ALARM_BUSY
//
retry_count--;
}
else
{
break;
}
}
} while(retry_count);
if (status != NVL_SUCCESS)
{
NVSWITCH_PRINT(device, ERROR,
"%s: NvLink Reset has failed for link %d\n",
__FUNCTION__, link->linkNumber);
// Re-register links.
status = nvlink_lib_register_link(device->nvlink_device, link);
if (status != NVL_SUCCESS)
{
nvswitch_destroy_link(link);
return status;
}
return status;
}
return NVL_SUCCESS;
}