diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2012-08-16 19:39:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-16 09:51:02 -0700 |
| commit | c216fdeb2e7371554c56ba457c374cce9c77f91a (patch) | |
| tree | 9d88b3170a5470844e61ac90a30fd923d50df14b /drivers/misc/mei/mei_dev.h | |
| parent | 248ffdf7c95726a8dae76e25fdb037899c5b77fa (diff) | |
mei: wd: decouple and revamp watchdog state machine
Before ME watchdog was exported through standard watchdog interface
it was closed and started together with the mei device.
The major issue is that closing ME watchdog disabled also MEI device,
to fix this the watchdog state machine has to be independent from MEI
state machine.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 64a4f17893e5..c8660c0eb1c7 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -33,6 +33,8 @@ #define MEI_WD_MIN_TIMEOUT 120 /* seconds */ #define MEI_WD_MAX_TIMEOUT 65535 /* seconds */ +#define MEI_WD_STOP_TIMEOUT 10 /* msecs */ + #define MEI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) #define MEI_RD_MSG_BUF_SIZE (128 * sizeof(u32)) @@ -120,6 +122,12 @@ enum mei_file_transaction_states { MEI_READ_COMPLETE }; +enum mei_wd_states { + MEI_WD_IDLE, + MEI_WD_RUNNING, + MEI_WD_STOPPING, +}; + /* MEI CB */ enum mei_cb_major_types { MEI_READ = 0, @@ -228,7 +236,6 @@ struct mei_device { enum mei_dev_state dev_state; enum mei_init_clients_states init_clients_state; u16 init_clients_timer; - bool stop; bool need_reset; u32 extra_write_index; @@ -248,11 +255,10 @@ struct mei_device { bool mei_host_buffer_is_empty; struct mei_cl wd_cl; + enum mei_wd_states wd_state; bool wd_interface_reg; bool wd_pending; - bool wd_stopped; - bool wd_bypass; /* if false, don't refresh watchdog ME client */ - u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */ + u16 wd_timeout; unsigned char wd_data[MEI_WD_START_MSG_SIZE]; |