2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/random.h>
36 #include <linux/vmalloc.h>
37 #include <linux/mlx5/driver.h>
38 #include <linux/mlx5/cmd.h>
39 #include "mlx5_core.h"
42 MLX5_HEALTH_POLL_INTERVAL = 2 * HZ,
47 MLX5_HEALTH_SYNDR_FW_ERR = 0x1,
48 MLX5_HEALTH_SYNDR_IRISC_ERR = 0x7,
49 MLX5_HEALTH_SYNDR_CRC_ERR = 0x9,
50 MLX5_HEALTH_SYNDR_FETCH_PCI_ERR = 0xa,
51 MLX5_HEALTH_SYNDR_HW_FTL_ERR = 0xb,
52 MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR = 0xc,
53 MLX5_HEALTH_SYNDR_EQ_ERR = 0xd,
54 MLX5_HEALTH_SYNDR_FFSER_ERR = 0xf,
57 static DEFINE_SPINLOCK(health_lock);
59 static LIST_HEAD(health_list);
60 static struct work_struct health_work;
62 static health_handler_t reg_handler;
63 int mlx5_register_health_report_handler(health_handler_t handler)
65 spin_lock_irq(&health_lock);
67 spin_unlock_irq(&health_lock);
70 reg_handler = handler;
71 spin_unlock_irq(&health_lock);
75 EXPORT_SYMBOL(mlx5_register_health_report_handler);
77 void mlx5_unregister_health_report_handler(void)
79 spin_lock_irq(&health_lock);
81 spin_unlock_irq(&health_lock);
83 EXPORT_SYMBOL(mlx5_unregister_health_report_handler);
85 static void health_care(struct work_struct *work)
87 struct mlx5_core_health *health, *n;
88 struct mlx5_core_dev *dev;
89 struct mlx5_priv *priv;
92 spin_lock_irq(&health_lock);
93 list_splice_init(&health_list, &tlist);
95 spin_unlock_irq(&health_lock);
97 list_for_each_entry_safe(health, n, &tlist, list) {
98 priv = container_of(health, struct mlx5_priv, health);
99 dev = container_of(priv, struct mlx5_core_dev, priv);
100 mlx5_core_warn(dev, "handling bad device here\n");
101 spin_lock_irq(&health_lock);
103 reg_handler(dev->pdev, health->health,
104 sizeof(health->health));
106 list_del_init(&health->list);
107 spin_unlock_irq(&health_lock);
111 static const char *hsynd_str(u8 synd)
114 case MLX5_HEALTH_SYNDR_FW_ERR:
115 return "firmware internal error";
116 case MLX5_HEALTH_SYNDR_IRISC_ERR:
117 return "irisc not responding";
118 case MLX5_HEALTH_SYNDR_CRC_ERR:
119 return "firmware CRC error";
120 case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR:
121 return "ICM fetch PCI error";
122 case MLX5_HEALTH_SYNDR_HW_FTL_ERR:
123 return "HW fatal error\n";
124 case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR:
125 return "async EQ buffer overrun";
126 case MLX5_HEALTH_SYNDR_EQ_ERR:
128 case MLX5_HEALTH_SYNDR_FFSER_ERR:
129 return "FFSER error";
131 return "unrecognized error";
135 static void print_health_info(struct mlx5_core_dev *dev)
137 struct mlx5_core_health *health = &dev->priv.health;
138 struct health_buffer __iomem *h = health->health;
141 for (i = 0; i < ARRAY_SIZE(h->assert_var); i++)
142 pr_info("assert_var[%d] 0x%08x\n", i, be32_to_cpu(h->assert_var[i]));
144 pr_info("assert_exit_ptr 0x%08x\n", be32_to_cpu(h->assert_exit_ptr));
145 pr_info("assert_callra 0x%08x\n", be32_to_cpu(h->assert_callra));
146 pr_info("fw_ver 0x%08x\n", be32_to_cpu(h->fw_ver));
147 pr_info("hw_id 0x%08x\n", be32_to_cpu(h->hw_id));
148 pr_info("irisc_index %d\n", h->irisc_index);
149 pr_info("synd 0x%x: %s\n", h->synd, hsynd_str(h->synd));
150 pr_info("ext_sync 0x%04x\n", be16_to_cpu(h->ext_sync));
153 static void poll_health(unsigned long data)
155 struct mlx5_core_dev *dev = (struct mlx5_core_dev *)data;
156 struct mlx5_core_health *health = &dev->priv.health;
160 count = ioread32be(health->health_counter);
161 if (count == health->prev)
162 ++health->miss_counter;
164 health->miss_counter = 0;
166 health->prev = count;
167 if (health->miss_counter == MAX_MISSES) {
168 mlx5_core_err(dev, "device's health compromised\n");
169 print_health_info(dev);
170 spin_lock_irq(&health_lock);
171 list_add_tail(&health->list, &health_list);
172 spin_unlock_irq(&health_lock);
174 queue_work(mlx5_core_wq, &health_work);
176 get_random_bytes(&next, sizeof(next));
178 next += jiffies + MLX5_HEALTH_POLL_INTERVAL;
179 mod_timer(&health->timer, next);
183 void mlx5_start_health_poll(struct mlx5_core_dev *dev)
185 struct mlx5_core_health *health = &dev->priv.health;
187 INIT_LIST_HEAD(&health->list);
188 init_timer(&health->timer);
189 health->health = &dev->iseg->health;
190 health->health_counter = &dev->iseg->health_counter;
192 health->timer.data = (unsigned long)dev;
193 health->timer.function = poll_health;
194 health->timer.expires = round_jiffies(jiffies + MLX5_HEALTH_POLL_INTERVAL);
195 add_timer(&health->timer);
198 void mlx5_stop_health_poll(struct mlx5_core_dev *dev)
200 struct mlx5_core_health *health = &dev->priv.health;
202 del_timer_sync(&health->timer);
204 spin_lock_irq(&health_lock);
205 if (!list_empty(&health->list))
206 list_del_init(&health->list);
207 spin_unlock_irq(&health_lock);
210 void mlx5_health_cleanup(void)
214 void __init mlx5_health_init(void)
216 INIT_WORK(&health_work, health_care);