mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-23 01:10:04 +00:00
Code Issues Releases Wiki Activity

mei: enable async event notifications only from hbm version 2.0

Browse source 
Only FW version 2.0 and newer support the async event
notification. For backward compatibility block the feature
if the FW version is older then 2.0

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2015-07-26 09:54:17 +03:00 committed by Greg Kroah-Hartman
parent 965ae37ab8
commit 4d99877d87
4 changed files with 14 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/misc/mei/debugfs.c
View file

@ -158,6 +158,8 @@ static ssize_t mei_dbgfs_read_devstate(struct file *fp, char __user *ubuf,
dev->hbm_f_dc_supported);
pos += scnprintf(buf + pos, bufsz - pos, "\tDOT: %01d\n",
dev->hbm_f_dot_supported);
pos += scnprintf(buf + pos, bufsz - pos, "\tEV: %01d\n",
dev->hbm_f_ev_supported);
}
pos += scnprintf(buf + pos, bufsz - pos, "pg: %s, %s\n",

4
drivers/misc/mei/hbm.c
View file

@ -903,6 +903,10 @@ static void mei_hbm_config_features(struct mei_device *dev)
/* disconnect on connect timeout instead of link reset */
if (dev->version.major_version >= HBM_MAJOR_VERSION_DOT)
dev->hbm_f_dot_supported = 1;
/* Notification Event Support */
if (dev->version.major_version >= HBM_MAJOR_VERSION_EV)
dev->hbm_f_ev_supported = 1;
}
/**

6
drivers/misc/mei/hw.h
View file

@ -58,6 +58,12 @@
#define HBM_MINOR_VERSION_DOT 0
#define HBM_MAJOR_VERSION_DOT 2
/*
* MEI version with notifcation support
*/
#define HBM_MINOR_VERSION_EV 0
#define HBM_MAJOR_VERSION_EV 2
/* Host bus message command opcode */
#define MEI_HBM_CMD_OP_MSK 0x7f
/* Host bus message command RESPONSE */

2
drivers/misc/mei/mei_dev.h
View file

@ -419,6 +419,7 @@ const char *mei_pg_state_str(enum mei_pg_state state);
* @hbm_f_pg_supported : hbm feature pgi protocol
* @hbm_f_dc_supported : hbm feature dynamic clients
* @hbm_f_dot_supported : hbm feature disconnect on timeout
* @hbm_f_ev_supported : hbm feature event notification
*
* @me_clients_rwsem: rw lock over me_clients list
* @me_clients : list of FW clients
@ -514,6 +515,7 @@ struct mei_device {
unsigned int hbm_f_pg_supported:1;
unsigned int hbm_f_dc_supported:1;
unsigned int hbm_f_dot_supported:1;
unsigned int hbm_f_ev_supported:1;
struct rw_semaphore me_clients_rwsem;
struct list_head me_clients;