diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/catas.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/catas.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/catas.c b/drivers/net/ethernet/mellanox/mlx4/catas.c new file mode 100644 index 00000000000..45aea9c3ae2 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx4/catas.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. + * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * 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 <linux/workqueue.h> +#include <linux/module.h> + +#include "mlx4.h" + +enum { + MLX4_CATAS_POLL_INTERVAL = 5 * HZ, +}; + +static DEFINE_SPINLOCK(catas_lock); + +static LIST_HEAD(catas_list); +static struct work_struct catas_work; + +static int internal_err_reset = 1; +module_param(internal_err_reset, int, 0644); +MODULE_PARM_DESC(internal_err_reset, + "Reset device on internal errors if non-zero (default 1)"); + +static void dump_err_buf(struct mlx4_dev *dev) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + + int i; + + mlx4_err(dev, "Internal error detected:\n"); + for (i = 0; i < priv->fw.catas_size; ++i) + mlx4_err(dev, " buf[%02x]: %08x\n", + i, swab32(readl(priv->catas_err.map + i))); +} + +static void poll_catas(unsigned long dev_ptr) +{ + struct mlx4_dev *dev = (struct mlx4_dev *) dev_ptr; + struct mlx4_priv *priv = mlx4_priv(dev); + + if (readl(priv->catas_err.map)) { + dump_err_buf(dev); + + mlx4_dispatch_event(dev, MLX4_DEV_EVENT_CATASTROPHIC_ERROR, 0); + + if (internal_err_reset) { + spin_lock(&catas_lock); + list_add(&priv->catas_err.list, &catas_list); + spin_unlock(&catas_lock); + + queue_work(mlx4_wq, &catas_work); + } + } else + mod_timer(&priv->catas_err.timer, + round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL)); +} + +static void catas_reset(struct work_struct *work) +{ + struct mlx4_priv *priv, *tmppriv; + struct mlx4_dev *dev; + + LIST_HEAD(tlist); + int ret; + + spin_lock_irq(&catas_lock); + list_splice_init(&catas_list, &tlist); + spin_unlock_irq(&catas_lock); + + list_for_each_entry_safe(priv, tmppriv, &tlist, catas_err.list) { + struct pci_dev *pdev = priv->dev.pdev; + + ret = mlx4_restart_one(priv->dev.pdev); + /* 'priv' now is not valid */ + if (ret) + pr_err("mlx4 %s: Reset failed (%d)\n", + pci_name(pdev), ret); + else { + dev = pci_get_drvdata(pdev); + mlx4_dbg(dev, "Reset succeeded\n"); + } + } +} + +void mlx4_start_catas_poll(struct mlx4_dev *dev) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + phys_addr_t addr; + + INIT_LIST_HEAD(&priv->catas_err.list); + init_timer(&priv->catas_err.timer); + priv->catas_err.map = NULL; + + addr = pci_resource_start(dev->pdev, priv->fw.catas_bar) + + priv->fw.catas_offset; + + priv->catas_err.map = ioremap(addr, priv->fw.catas_size * 4); + if (!priv->catas_err.map) { + mlx4_warn(dev, "Failed to map internal error buffer at 0x%llx\n", + (unsigned long long) addr); + return; + } + + priv->catas_err.timer.data = (unsigned long) dev; + priv->catas_err.timer.function = poll_catas; + priv->catas_err.timer.expires = + round_jiffies(jiffies + MLX4_CATAS_POLL_INTERVAL); + add_timer(&priv->catas_err.timer); +} + +void mlx4_stop_catas_poll(struct mlx4_dev *dev) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + + del_timer_sync(&priv->catas_err.timer); + + if (priv->catas_err.map) + iounmap(priv->catas_err.map); + + spin_lock_irq(&catas_lock); + list_del(&priv->catas_err.list); + spin_unlock_irq(&catas_lock); +} + +void __init mlx4_catas_init(void) +{ + INIT_WORK(&catas_work, catas_reset); +} |