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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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27bf91d6a0
When a port's link is down (except to driver restart) and the port is configured for auto sensing, we try to sense port link type (Ethernet or InfiniBand) in order to determine how to initialize the port. If the port type needs to be changed, all mlx4 for the device interfaces are unregistered and then registered again with the new port types. Sensing is done with intervals of 3 seconds. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
152 lines
4.2 KiB
C
152 lines
4.2 KiB
C
/*
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* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/workqueue.h>
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#include "mlx4.h"
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enum {
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MLX4_CATAS_POLL_INTERVAL = 5 * HZ,
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};
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static DEFINE_SPINLOCK(catas_lock);
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static LIST_HEAD(catas_list);
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static struct work_struct catas_work;
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static int internal_err_reset = 1;
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module_param(internal_err_reset, int, 0644);
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MODULE_PARM_DESC(internal_err_reset,
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"Reset device on internal errors if non-zero (default 1)");
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static void dump_err_buf(struct mlx4_dev *dev)
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{
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struct mlx4_priv *priv = mlx4_priv(dev);
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int i;
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mlx4_err(dev, "Internal error detected:\n");
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for (i = 0; i < priv->fw.catas_size; ++i)
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mlx4_err(dev, " buf[%02x]: %08x\n",
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i, swab32(readl(priv->catas_err.map + i)));
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}
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static void poll_catas(unsigned long dev_ptr)
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{
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struct mlx4_dev *dev = (struct mlx4_dev *) dev_ptr;
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struct mlx4_priv *priv = mlx4_priv(dev);
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if (readl(priv->catas_err.map)) {
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dump_err_buf(dev);
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mlx4_dispatch_event(dev, MLX4_DEV_EVENT_CATASTROPHIC_ERROR, 0);
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if (internal_err_reset) {
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spin_lock(&catas_lock);
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list_add(&priv->catas_err.list, &catas_list);
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spin_unlock(&catas_lock);
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queue_work(mlx4_wq, &catas_work);
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}
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} else
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mod_timer(&priv->catas_err.timer,
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round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL));
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}
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static void catas_reset(struct work_struct *work)
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{
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struct mlx4_priv *priv, *tmppriv;
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struct mlx4_dev *dev;
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LIST_HEAD(tlist);
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int ret;
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spin_lock_irq(&catas_lock);
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list_splice_init(&catas_list, &tlist);
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spin_unlock_irq(&catas_lock);
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list_for_each_entry_safe(priv, tmppriv, &tlist, catas_err.list) {
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ret = mlx4_restart_one(priv->dev.pdev);
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dev = &priv->dev;
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if (ret)
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mlx4_err(dev, "Reset failed (%d)\n", ret);
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else
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mlx4_dbg(dev, "Reset succeeded\n");
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}
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}
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void mlx4_start_catas_poll(struct mlx4_dev *dev)
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{
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struct mlx4_priv *priv = mlx4_priv(dev);
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unsigned long addr;
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INIT_LIST_HEAD(&priv->catas_err.list);
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init_timer(&priv->catas_err.timer);
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priv->catas_err.map = NULL;
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addr = pci_resource_start(dev->pdev, priv->fw.catas_bar) +
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priv->fw.catas_offset;
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priv->catas_err.map = ioremap(addr, priv->fw.catas_size * 4);
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if (!priv->catas_err.map) {
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mlx4_warn(dev, "Failed to map internal error buffer at 0x%lx\n",
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addr);
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return;
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}
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priv->catas_err.timer.data = (unsigned long) dev;
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priv->catas_err.timer.function = poll_catas;
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priv->catas_err.timer.expires =
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round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL);
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add_timer(&priv->catas_err.timer);
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}
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void mlx4_stop_catas_poll(struct mlx4_dev *dev)
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{
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struct mlx4_priv *priv = mlx4_priv(dev);
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del_timer_sync(&priv->catas_err.timer);
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if (priv->catas_err.map)
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iounmap(priv->catas_err.map);
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spin_lock_irq(&catas_lock);
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list_del(&priv->catas_err.list);
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spin_unlock_irq(&catas_lock);
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}
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void __init mlx4_catas_init(void)
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{
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INIT_WORK(&catas_work, catas_reset);
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}
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