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path: root/drivers/misc/mei/hbm.c
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Diffstat (limited to 'drivers/misc/mei/hbm.c')
-rw-r--r--drivers/misc/mei/hbm.c91
1 files changed, 58 insertions, 33 deletions
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index fb9e63ba3bb..6916045166e 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -52,7 +52,7 @@ static void mei_hbm_me_cl_allocate(struct mei_device *dev)
sizeof(struct mei_me_client), GFP_KERNEL);
if (!clients) {
dev_err(&dev->pdev->dev, "memory allocation for ME clients failed.\n");
- dev->dev_state = MEI_DEV_RESETING;
+ dev->dev_state = MEI_DEV_RESETTING;
mei_reset(dev, 1);
return;
}
@@ -62,6 +62,7 @@ static void mei_hbm_me_cl_allocate(struct mei_device *dev)
/**
* mei_hbm_cl_hdr - construct client hbm header
+ *
* @cl: - client
* @hbm_cmd: host bus message command
* @buf: buffer for cl header
@@ -123,12 +124,33 @@ static bool is_treat_specially_client(struct mei_cl *cl,
return false;
}
+int mei_hbm_start_wait(struct mei_device *dev)
+{
+ int ret;
+ if (dev->hbm_state > MEI_HBM_START)
+ return 0;
+
+ mutex_unlock(&dev->device_lock);
+ ret = wait_event_interruptible_timeout(dev->wait_recvd_msg,
+ dev->hbm_state == MEI_HBM_IDLE ||
+ dev->hbm_state > MEI_HBM_START,
+ mei_secs_to_jiffies(MEI_INTEROP_TIMEOUT));
+ mutex_lock(&dev->device_lock);
+
+ if (ret <= 0 && (dev->hbm_state <= MEI_HBM_START)) {
+ dev->hbm_state = MEI_HBM_IDLE;
+ dev_err(&dev->pdev->dev, "wating for mei start failed\n");
+ return -ETIMEDOUT;
+ }
+ return 0;
+}
+
/**
* mei_hbm_start_req - sends start request message.
*
* @dev: the device structure
*/
-void mei_hbm_start_req(struct mei_device *dev)
+int mei_hbm_start_req(struct mei_device *dev)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_host_version_request *start_req;
@@ -143,18 +165,19 @@ void mei_hbm_start_req(struct mei_device *dev)
start_req->host_version.major_version = HBM_MAJOR_VERSION;
start_req->host_version.minor_version = HBM_MINOR_VERSION;
- dev->recvd_msg = false;
+ dev->hbm_state = MEI_HBM_IDLE;
if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
- dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
- dev->dev_state = MEI_DEV_RESETING;
+ dev_err(&dev->pdev->dev, "version message writet failed\n");
+ dev->dev_state = MEI_DEV_RESETTING;
mei_reset(dev, 1);
+ return -ENODEV;
}
- dev->init_clients_state = MEI_START_MESSAGE;
+ dev->hbm_state = MEI_HBM_START;
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
- return ;
+ return 0;
}
-/**
+/*
* mei_hbm_enum_clients_req - sends enumeration client request message.
*
* @dev: the device structure
@@ -174,17 +197,17 @@ static void mei_hbm_enum_clients_req(struct mei_device *dev)
enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
- dev->dev_state = MEI_DEV_RESETING;
- dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
+ dev->dev_state = MEI_DEV_RESETTING;
+ dev_err(&dev->pdev->dev, "enumeration request write failed.\n");
mei_reset(dev, 1);
}
- dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE;
+ dev->hbm_state = MEI_HBM_ENUM_CLIENTS;
dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
return;
}
/**
- * mei_hbm_prop_requsest - request property for a single client
+ * mei_hbm_prop_req - request property for a single client
*
* @dev: the device structure
*
@@ -208,6 +231,7 @@ static int mei_hbm_prop_req(struct mei_device *dev)
/* We got all client properties */
if (next_client_index == MEI_CLIENTS_MAX) {
+ dev->hbm_state = MEI_HBM_STARTED;
schedule_work(&dev->init_work);
return 0;
@@ -226,8 +250,8 @@ static int mei_hbm_prop_req(struct mei_device *dev)
prop_req->address = next_client_index;
if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
- dev->dev_state = MEI_DEV_RESETING;
- dev_err(&dev->pdev->dev, "Properties request command failed\n");
+ dev->dev_state = MEI_DEV_RESETTING;
+ dev_err(&dev->pdev->dev, "properties request write failed\n");
mei_reset(dev, 1);
return -EIO;
@@ -283,9 +307,9 @@ int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
}
/**
- * add_single_flow_creds - adds single buffer credentials.
+ * mei_hbm_add_single_flow_creds - adds single buffer credentials.
*
- * @file: private data ot the file object.
+ * @dev: the device structure
* @flow: flow control.
*/
static void mei_hbm_add_single_flow_creds(struct mei_device *dev,
@@ -477,7 +501,7 @@ static void mei_hbm_cl_connect_res(struct mei_device *dev,
/**
- * mei_client_disconnect_request - disconnect request initiated by me
+ * mei_hbm_fw_disconnect_req - disconnect request initiated by me
* host sends disoconnect response
*
* @dev: the device structure.
@@ -542,27 +566,28 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
dev->version = version_res->me_max_version;
dev_dbg(&dev->pdev->dev, "version mismatch.\n");
+ dev->hbm_state = MEI_HBM_STOP;
mei_hbm_stop_req_prepare(dev, &dev->wr_msg.hdr,
dev->wr_msg.data);
mei_write_message(dev, &dev->wr_msg.hdr,
dev->wr_msg.data);
+
return;
}
dev->version.major_version = HBM_MAJOR_VERSION;
dev->version.minor_version = HBM_MINOR_VERSION;
if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
- dev->init_clients_state == MEI_START_MESSAGE) {
+ dev->hbm_state == MEI_HBM_START) {
dev->init_clients_timer = 0;
mei_hbm_enum_clients_req(dev);
} else {
- dev->recvd_msg = false;
- dev_dbg(&dev->pdev->dev, "reset due to received hbm: host start\n");
+ dev_err(&dev->pdev->dev, "reset: wrong host start response\n");
mei_reset(dev, 1);
return;
}
- dev->recvd_msg = true;
+ wake_up_interruptible(&dev->wait_recvd_msg);
dev_dbg(&dev->pdev->dev, "host start response message received.\n");
break;
@@ -591,23 +616,20 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
me_client = &dev->me_clients[dev->me_client_presentation_num];
if (props_res->status || !dev->me_clients) {
- dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n");
+ dev_err(&dev->pdev->dev, "reset: properties response hbm wrong status.\n");
mei_reset(dev, 1);
return;
}
if (me_client->client_id != props_res->address) {
- dev_err(&dev->pdev->dev,
- "Host client properties reply mismatch\n");
+ dev_err(&dev->pdev->dev, "reset: host properties response address mismatch\n");
mei_reset(dev, 1);
-
return;
}
if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
- dev->init_clients_state != MEI_CLIENT_PROPERTIES_MESSAGE) {
- dev_err(&dev->pdev->dev,
- "Unexpected client properties reply\n");
+ dev->hbm_state != MEI_HBM_CLIENT_PROPERTIES) {
+ dev_err(&dev->pdev->dev, "reset: unexpected properties response\n");
mei_reset(dev, 1);
return;
@@ -626,26 +648,28 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
enum_res = (struct hbm_host_enum_response *) mei_msg;
memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
- dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
+ dev->hbm_state == MEI_HBM_ENUM_CLIENTS) {
dev->init_clients_timer = 0;
dev->me_client_presentation_num = 0;
dev->me_client_index = 0;
mei_hbm_me_cl_allocate(dev);
- dev->init_clients_state =
- MEI_CLIENT_PROPERTIES_MESSAGE;
+ dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES;
/* first property reqeust */
mei_hbm_prop_req(dev);
} else {
- dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
+ dev_err(&dev->pdev->dev, "reset: unexpected enumeration response hbm.\n");
mei_reset(dev, 1);
return;
}
break;
case HOST_STOP_RES_CMD:
+
+ if (dev->hbm_state != MEI_HBM_STOP)
+ dev_err(&dev->pdev->dev, "unexpected stop response hbm.\n");
dev->dev_state = MEI_DEV_DISABLED;
- dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n");
+ dev_info(&dev->pdev->dev, "reset: FW stop response.\n");
mei_reset(dev, 1);
break;
@@ -657,6 +681,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
case ME_STOP_REQ_CMD:
+ dev->hbm_state = MEI_HBM_STOP;
mei_hbm_stop_req_prepare(dev, &dev->wr_ext_msg.hdr,
dev->wr_ext_msg.data);
break;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 04:17:22 +0000