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
);
58 static LIST_HEAD(health_list
);
59 static struct work_struct health_work
;
61 static void health_care(struct work_struct
*work
)
63 struct mlx5_core_health
*health
, *n
;
64 struct mlx5_core_dev
*dev
;
65 struct mlx5_priv
*priv
;
68 spin_lock_irq(&health_lock
);
69 list_splice_init(&health_list
, &tlist
);
71 spin_unlock_irq(&health_lock
);
73 list_for_each_entry_safe(health
, n
, &tlist
, list
) {
74 priv
= container_of(health
, struct mlx5_priv
, health
);
75 dev
= container_of(priv
, struct mlx5_core_dev
, priv
);
76 mlx5_core_warn(dev
, "handling bad device here\n");
78 spin_lock_irq(&health_lock
);
79 list_del_init(&health
->list
);
80 spin_unlock_irq(&health_lock
);
84 static const char *hsynd_str(u8 synd
)
87 case MLX5_HEALTH_SYNDR_FW_ERR
:
88 return "firmware internal error";
89 case MLX5_HEALTH_SYNDR_IRISC_ERR
:
90 return "irisc not responding";
91 case MLX5_HEALTH_SYNDR_CRC_ERR
:
92 return "firmware CRC error";
93 case MLX5_HEALTH_SYNDR_FETCH_PCI_ERR
:
94 return "ICM fetch PCI error";
95 case MLX5_HEALTH_SYNDR_HW_FTL_ERR
:
96 return "HW fatal error\n";
97 case MLX5_HEALTH_SYNDR_ASYNC_EQ_OVERRUN_ERR
:
98 return "async EQ buffer overrun";
99 case MLX5_HEALTH_SYNDR_EQ_ERR
:
101 case MLX5_HEALTH_SYNDR_FFSER_ERR
:
102 return "FFSER error";
104 return "unrecognized error";
108 static u16
read_be16(__be16 __iomem
*p
)
110 return swab16(readl((__force u16 __iomem
*) p
));
113 static u32
read_be32(__be32 __iomem
*p
)
115 return swab32(readl((__force u32 __iomem
*) p
));
118 static void print_health_info(struct mlx5_core_dev
*dev
)
120 struct mlx5_core_health
*health
= &dev
->priv
.health
;
121 struct health_buffer __iomem
*h
= health
->health
;
124 for (i
= 0; i
< ARRAY_SIZE(h
->assert_var
); i
++)
125 pr_info("assert_var[%d] 0x%08x\n", i
, read_be32(h
->assert_var
+ i
));
127 pr_info("assert_exit_ptr 0x%08x\n", read_be32(&h
->assert_exit_ptr
));
128 pr_info("assert_callra 0x%08x\n", read_be32(&h
->assert_callra
));
129 pr_info("fw_ver 0x%08x\n", read_be32(&h
->fw_ver
));
130 pr_info("hw_id 0x%08x\n", read_be32(&h
->hw_id
));
131 pr_info("irisc_index %d\n", readb(&h
->irisc_index
));
132 pr_info("synd 0x%x: %s\n", readb(&h
->synd
), hsynd_str(readb(&h
->synd
)));
133 pr_info("ext_sync 0x%04x\n", read_be16(&h
->ext_sync
));
136 static void poll_health(unsigned long data
)
138 struct mlx5_core_dev
*dev
= (struct mlx5_core_dev
*)data
;
139 struct mlx5_core_health
*health
= &dev
->priv
.health
;
143 count
= ioread32be(health
->health_counter
);
144 if (count
== health
->prev
)
145 ++health
->miss_counter
;
147 health
->miss_counter
= 0;
149 health
->prev
= count
;
150 if (health
->miss_counter
== MAX_MISSES
) {
151 mlx5_core_err(dev
, "device's health compromised\n");
152 print_health_info(dev
);
153 spin_lock_irq(&health_lock
);
154 list_add_tail(&health
->list
, &health_list
);
155 spin_unlock_irq(&health_lock
);
157 queue_work(mlx5_core_wq
, &health_work
);
159 get_random_bytes(&next
, sizeof(next
));
161 next
+= jiffies
+ MLX5_HEALTH_POLL_INTERVAL
;
162 mod_timer(&health
->timer
, next
);
166 void mlx5_start_health_poll(struct mlx5_core_dev
*dev
)
168 struct mlx5_core_health
*health
= &dev
->priv
.health
;
170 INIT_LIST_HEAD(&health
->list
);
171 init_timer(&health
->timer
);
172 health
->health
= &dev
->iseg
->health
;
173 health
->health_counter
= &dev
->iseg
->health_counter
;
175 health
->timer
.data
= (unsigned long)dev
;
176 health
->timer
.function
= poll_health
;
177 health
->timer
.expires
= round_jiffies(jiffies
+ MLX5_HEALTH_POLL_INTERVAL
);
178 add_timer(&health
->timer
);
181 void mlx5_stop_health_poll(struct mlx5_core_dev
*dev
)
183 struct mlx5_core_health
*health
= &dev
->priv
.health
;
185 del_timer_sync(&health
->timer
);
187 spin_lock_irq(&health_lock
);
188 if (!list_empty(&health
->list
))
189 list_del_init(&health
->list
);
190 spin_unlock_irq(&health_lock
);
193 void mlx5_health_cleanup(void)
197 void __init
mlx5_health_init(void)
199 INIT_WORK(&health_work
, health_care
);