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Diffstat (limited to 'drivers/misc/mei/init.c')
-rw-r--r--drivers/misc/mei/init.c60
1 files changed, 55 insertions, 5 deletions
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 4460975c0eef..006929222481 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -74,9 +74,13 @@ int mei_reset(struct mei_device *dev)
if (state != MEI_DEV_INITIALIZING &&
state != MEI_DEV_DISABLED &&
state != MEI_DEV_POWER_DOWN &&
- state != MEI_DEV_POWER_UP)
- dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n",
- mei_dev_state_str(state));
+ state != MEI_DEV_POWER_UP) {
+ struct mei_fw_status fw_status;
+ mei_fw_status(dev, &fw_status);
+ dev_warn(&dev->pdev->dev,
+ "unexpected reset: dev_state = %s " FW_STS_FMT "\n",
+ mei_dev_state_str(state), FW_STS_PRM(fw_status));
+ }
/* we're already in reset, cancel the init timer
* if the reset was called due the hbm protocol error
@@ -118,8 +122,8 @@ int mei_reset(struct mei_device *dev)
mei_amthif_reset_params(dev);
}
+ mei_hbm_reset(dev);
- dev->me_clients_num = 0;
dev->rd_msg_hdr = 0;
dev->wd_pending = false;
@@ -303,15 +307,58 @@ void mei_stop(struct mei_device *dev)
}
EXPORT_SYMBOL_GPL(mei_stop);
+/**
+ * mei_write_is_idle - check if the write queues are idle
+ *
+ * @dev: the device structure
+ *
+ * returns true of there is no pending write
+ */
+bool mei_write_is_idle(struct mei_device *dev)
+{
+ bool idle = (dev->dev_state == MEI_DEV_ENABLED &&
+ list_empty(&dev->ctrl_wr_list.list) &&
+ list_empty(&dev->write_list.list));
+ dev_dbg(&dev->pdev->dev, "write pg: is idle[%d] state=%s ctrl=%d write=%d\n",
+ idle,
+ mei_dev_state_str(dev->dev_state),
+ list_empty(&dev->ctrl_wr_list.list),
+ list_empty(&dev->write_list.list));
-void mei_device_init(struct mei_device *dev)
+ return idle;
+}
+EXPORT_SYMBOL_GPL(mei_write_is_idle);
+
+int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status)
+{
+ int i;
+ const struct mei_fw_status *fw_src = &dev->cfg->fw_status;
+
+ if (!fw_status)
+ return -EINVAL;
+
+ fw_status->count = fw_src->count;
+ for (i = 0; i < fw_src->count && i < MEI_FW_STATUS_MAX; i++) {
+ int ret;
+ ret = pci_read_config_dword(dev->pdev,
+ fw_src->status[i], &fw_status->status[i]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mei_fw_status);
+
+void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg)
{
/* setup our list array */
INIT_LIST_HEAD(&dev->file_list);
INIT_LIST_HEAD(&dev->device_list);
mutex_init(&dev->device_lock);
init_waitqueue_head(&dev->wait_hw_ready);
+ init_waitqueue_head(&dev->wait_pg);
init_waitqueue_head(&dev->wait_recvd_msg);
init_waitqueue_head(&dev->wait_stop_wd);
dev->dev_state = MEI_DEV_INITIALIZING;
@@ -340,6 +387,9 @@ void mei_device_init(struct mei_device *dev)
* 0: Reserved for MEI Bus Message communications
*/
bitmap_set(dev->host_clients_map, 0, 1);
+
+ dev->pg_event = MEI_PG_EVENT_IDLE;
+ dev->cfg = cfg;
}
EXPORT_SYMBOL_GPL(mei_device_init);