mei: implement async notification hbm messages
Implement sending and reception handlers for the
async event notification hbm commands.
Add client notification book keeping data required for the messages
notify_en to indicate whether notification is enabled
notify_ev to indicate whether an event is pending
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
Greg Kroah-Hartman
parent
d3c1c809c4
commit
965ae37ab8
@ -402,6 +402,125 @@ static int mei_hbm_fw_add_cl_req(struct mei_device *dev,
|
||||
return mei_hbm_add_cl_resp(dev, req->me_addr, status);
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_hbm_cl_notify_req - send notification request
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @cl: a client to disconnect from
|
||||
* @start: true for start false for stop
|
||||
*
|
||||
* Return: 0 on success and -EIO on write failure
|
||||
*/
|
||||
int mei_hbm_cl_notify_req(struct mei_device *dev,
|
||||
struct mei_cl *cl, u8 start)
|
||||
{
|
||||
|
||||
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
|
||||
struct hbm_notification_request *req;
|
||||
const size_t len = sizeof(struct hbm_notification_request);
|
||||
int ret;
|
||||
|
||||
mei_hbm_hdr(mei_hdr, len);
|
||||
mei_hbm_cl_hdr(cl, MEI_HBM_NOTIFY_REQ_CMD, dev->wr_msg.data, len);
|
||||
|
||||
req = (struct hbm_notification_request *)dev->wr_msg.data;
|
||||
req->start = start;
|
||||
|
||||
ret = mei_write_message(dev, mei_hdr, dev->wr_msg.data);
|
||||
if (ret)
|
||||
dev_err(dev->dev, "notify request failed: ret = %d\n", ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* notify_res_to_fop - convert notification response to the proper
|
||||
* notification FOP
|
||||
*
|
||||
* @cmd: client notification start response command
|
||||
*
|
||||
* Return: MEI_FOP_NOTIFY_START or MEI_FOP_NOTIFY_STOP;
|
||||
*/
|
||||
static inline enum mei_cb_file_ops notify_res_to_fop(struct mei_hbm_cl_cmd *cmd)
|
||||
{
|
||||
struct hbm_notification_response *rs =
|
||||
(struct hbm_notification_response *)cmd;
|
||||
|
||||
if (rs->start == MEI_HBM_NOTIFICATION_START)
|
||||
return MEI_FOP_NOTIFY_START;
|
||||
else
|
||||
return MEI_FOP_NOTIFY_STOP;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_hbm_cl_notify_start_res - update the client state according
|
||||
* notify start response
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @cl: mei host client
|
||||
* @cmd: client notification start response command
|
||||
*/
|
||||
static void mei_hbm_cl_notify_start_res(struct mei_device *dev,
|
||||
struct mei_cl *cl,
|
||||
struct mei_hbm_cl_cmd *cmd)
|
||||
{
|
||||
struct hbm_notification_response *rs =
|
||||
(struct hbm_notification_response *)cmd;
|
||||
|
||||
cl_dbg(dev, cl, "hbm: notify start response status=%d\n", rs->status);
|
||||
|
||||
if (rs->status == MEI_HBMS_SUCCESS ||
|
||||
rs->status == MEI_HBMS_ALREADY_STARTED) {
|
||||
cl->notify_en = true;
|
||||
cl->status = 0;
|
||||
} else {
|
||||
cl->status = -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_hbm_cl_notify_stop_res - update the client state according
|
||||
* notify stop response
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @cl: mei host client
|
||||
* @cmd: client notification stop response command
|
||||
*/
|
||||
static void mei_hbm_cl_notify_stop_res(struct mei_device *dev,
|
||||
struct mei_cl *cl,
|
||||
struct mei_hbm_cl_cmd *cmd)
|
||||
{
|
||||
struct hbm_notification_response *rs =
|
||||
(struct hbm_notification_response *)cmd;
|
||||
|
||||
cl_dbg(dev, cl, "hbm: notify stop response status=%d\n", rs->status);
|
||||
|
||||
if (rs->status == MEI_HBMS_SUCCESS ||
|
||||
rs->status == MEI_HBMS_NOT_STARTED) {
|
||||
cl->notify_en = false;
|
||||
cl->status = 0;
|
||||
} else {
|
||||
/* TODO: spec is not clear yet about other possible issues */
|
||||
cl->status = -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_hbm_cl_notify - signal notification event
|
||||
*
|
||||
* @dev: the device structure
|
||||
* @cmd: notification client message
|
||||
*/
|
||||
static void mei_hbm_cl_notify(struct mei_device *dev,
|
||||
struct mei_hbm_cl_cmd *cmd)
|
||||
{
|
||||
struct mei_cl *cl;
|
||||
|
||||
cl = mei_hbm_cl_find_by_cmd(dev, cmd);
|
||||
if (cl && cl->notify_en)
|
||||
cl->notify_ev = true;
|
||||
}
|
||||
|
||||
/**
|
||||
* mei_hbm_prop_req - request property for a single client
|
||||
*
|
||||
@ -716,6 +835,12 @@ static void mei_hbm_cl_res(struct mei_device *dev,
|
||||
case MEI_FOP_DISCONNECT:
|
||||
mei_hbm_cl_disconnect_res(dev, cl, rs);
|
||||
break;
|
||||
case MEI_FOP_NOTIFY_START:
|
||||
mei_hbm_cl_notify_start_res(dev, cl, rs);
|
||||
break;
|
||||
case MEI_FOP_NOTIFY_STOP:
|
||||
mei_hbm_cl_notify_stop_res(dev, cl, rs);
|
||||
break;
|
||||
default:
|
||||
return;
|
||||
}
|
||||
@ -1031,6 +1156,16 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
|
||||
dev_dbg(dev->dev, "hbm: add client request processed\n");
|
||||
break;
|
||||
|
||||
case MEI_HBM_NOTIFY_RES_CMD:
|
||||
dev_dbg(dev->dev, "hbm: notify response received\n");
|
||||
mei_hbm_cl_res(dev, cl_cmd, notify_res_to_fop(cl_cmd));
|
||||
break;
|
||||
|
||||
case MEI_HBM_NOTIFICATION_CMD:
|
||||
dev_dbg(dev->dev, "hbm: notification\n");
|
||||
mei_hbm_cl_notify(dev, cl_cmd);
|
||||
break;
|
||||
|
||||
default:
|
||||
BUG();
|
||||
break;
|
||||
|
||||
@ -54,6 +54,8 @@ int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl);
|
||||
int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
|
||||
bool mei_hbm_version_is_supported(struct mei_device *dev);
|
||||
int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd);
|
||||
int mei_hbm_cl_notify_req(struct mei_device *dev,
|
||||
struct mei_cl *cl, u8 request);
|
||||
|
||||
#endif /* _MEI_HBM_H_ */
|
||||
|
||||
|
||||
@ -136,6 +136,8 @@ enum mei_wd_states {
|
||||
* @MEI_FOP_CONNECT: connect
|
||||
* @MEI_FOP_DISCONNECT: disconnect
|
||||
* @MEI_FOP_DISCONNECT_RSP: disconnect response
|
||||
* @MEI_FOP_NOTIFY_START: start notification
|
||||
* @MEI_FOP_NOTIFY_STOP: stop notification
|
||||
*/
|
||||
enum mei_cb_file_ops {
|
||||
MEI_FOP_READ = 0,
|
||||
@ -143,6 +145,8 @@ enum mei_cb_file_ops {
|
||||
MEI_FOP_CONNECT,
|
||||
MEI_FOP_DISCONNECT,
|
||||
MEI_FOP_DISCONNECT_RSP,
|
||||
MEI_FOP_NOTIFY_START,
|
||||
MEI_FOP_NOTIFY_STOP,
|
||||
};
|
||||
|
||||
/*
|
||||
@ -237,6 +241,8 @@ struct mei_cl_cb {
|
||||
* @mei_flow_ctrl_creds: transmit flow credentials
|
||||
* @timer_count: watchdog timer for operation completion
|
||||
* @reserved: reserved for alignment
|
||||
* @notify_en: notification - enabled/disabled
|
||||
* @notify_ev: pending notification event
|
||||
* @writing_state: state of the tx
|
||||
* @rd_pending: pending read credits
|
||||
* @rd_completed: completed read
|
||||
@ -256,6 +262,8 @@ struct mei_cl {
|
||||
u8 mei_flow_ctrl_creds;
|
||||
u8 timer_count;
|
||||
u8 reserved;
|
||||
u8 notify_en;
|
||||
u8 notify_ev;
|
||||
enum mei_file_transaction_states writing_state;
|
||||
struct list_head rd_pending;
|
||||
struct list_head rd_completed;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user