diff options
| author |   Andrew Lunn <andrew@lunn.ch> | 2017-02-09 00:03:42 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-02-13 09:30:21 -0500 |
| commit | fcd25166d950bc0fae4179b9d16995a1a2270810 (patch) | |
| tree | 25b5443f0b5d58448ff979679d2512db353de654 /drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | |
| parent | net: natsemi: ns83820: use new api ethtool_{get|set}_link_ksettings (diff) | |
| download | linux-dev-fcd25166d950bc0fae4179b9d16995a1a2270810.tar.xz linux-dev-fcd25166d950bc0fae4179b9d16995a1a2270810.zip | |
net: dsa: mv88e6xxx: Add watchdog interrupt handler
The switch contains a watchdog looking for issues with the internal
gubbins of the switch. Hook the interrupt the watchdog triggers and
log the value of the control register indicating why the watchdog
fired. The watchdog can only be cleared with a switch reset, which
will destroy the current configuration. Rather than doing this, just
disable the interrupt.
The mv88e6390 family has different watchdog registers. So use an ops
structure, so support for the mv88e6390 family can be added later.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h index ac54f40813f7..e35a56c89d5c 100644 --- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h @@ -339,6 +339,7 @@ #define GLOBAL_STATS_COUNTER_01 0x1f #define GLOBAL2_INT_SOURCE 0x00 +#define GLOBAL2_INT_SOURCE_WATCHDOG 15 #define GLOBAL2_INT_MASK 0x01 #define GLOBAL2_MGMT_EN_2X 0x02 #define GLOBAL2_MGMT_EN_0X 0x03 @@ -415,6 +416,14 @@ #define GLOBAL2_SCRATCH_REGISTER_SHIFT 8 #define GLOBAL2_SCRATCH_VALUE_MASK 0xff #define GLOBAL2_WDOG_CONTROL 0x1b +#define GLOBAL2_WDOG_CONTROL_EGRESS_EVENT BIT(7) +#define GLOBAL2_WDOG_CONTROL_RMU_TIMEOUT BIT(6) +#define GLOBAL2_WDOG_CONTROL_QC_ENABLE BIT(5) +#define GLOBAL2_WDOG_CONTROL_EGRESS_HISTORY BIT(4) +#define GLOBAL2_WDOG_CONTROL_EGRESS_ENABLE BIT(3) +#define GLOBAL2_WDOG_CONTROL_FORCE_IRQ BIT(2) +#define GLOBAL2_WDOG_CONTROL_HISTORY BIT(1) +#define GLOBAL2_WDOG_CONTROL_SWRESET BIT(0) #define GLOBAL2_QOS_WEIGHT 0x1c #define GLOBAL2_MISC 0x1d @@ -706,6 +715,7 @@ struct mv88e6xxx_vtu_entry { }; struct mv88e6xxx_bus_ops; +struct mv88e6xxx_irq_ops; struct mv88e6xxx_irq { u16 masked; @@ -766,6 +776,7 @@ struct mv88e6xxx_chip { struct mv88e6xxx_irq g2_irq; int irq; int device_irq; + int watchdog_irq; }; struct mv88e6xxx_bus_ops { @@ -879,11 +890,21 @@ struct mv88e6xxx_ops { uint64_t *data); int (*g1_set_cpu_port)(struct mv88e6xxx_chip *chip, int port); int (*g1_set_egress_port)(struct mv88e6xxx_chip *chip, int port); + const struct mv88e6xxx_irq_ops *watchdog_ops; /* Can be either in g1 or g2, so don't use a prefix */ int (*mgmt_rsvd2cpu)(struct mv88e6xxx_chip *chip); }; +struct mv88e6xxx_irq_ops { + /* Action to be performed when the interrupt happens */ + int (*irq_action)(struct mv88e6xxx_chip *chip, int irq); + /* Setup the hardware to generate the interrupt */ + int (*irq_setup)(struct mv88e6xxx_chip *chip); + /* Reset the hardware to stop generating the interrupt */ + void (*irq_free)(struct mv88e6xxx_chip *chip); +}; + #define STATS_TYPE_PORT BIT(0) #define STATS_TYPE_BANK0 BIT(1) #define STATS_TYPE_BANK1 BIT(2) |