157 lines
4.3 KiB
C
157 lines
4.3 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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struct pci_dev *pdev = priv->dev.pdev;
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ret = mlx4_restart_one(priv->dev.pdev);
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/* 'priv' now is not valid */
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if (ret)
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printk(KERN_ERR "mlx4 %s: Reset failed (%d)\n",
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pci_name(pdev), ret);
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else {
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dev = pci_get_drvdata(pdev);
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mlx4_dbg(dev, "Reset succeeded\n");
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}
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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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