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mei: Simplify the ME client enumeration code

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After enumerating all ME clients we call the client init functions for
all matching UUIDs from a separate context.
This remove the hackish cascading client initialisation process that was
interleaving properties and connection command replies.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Samuel Ortiz
2012-11-18 15:13:20 +02:00
committed by Greg Kroah-Hartman
parent be9d87a790
commit c1174c0edf
4 changed files with 97 additions and 88 deletions
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79
drivers/misc/mei/interrupt.c
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@@ -252,8 +252,6 @@ static void mei_client_connect_response(struct mei_device *dev,
dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n");
mei_watchdog_register(dev);
/* next step in the state maching */
mei_amthif_host_init(dev);
return;
}
@@ -470,6 +468,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
struct mei_msg_hdr *mei_hdr)
{
struct mei_bus_message *mei_msg;
struct mei_me_client *me_client;
struct hbm_host_version_response *version_res;
struct hbm_client_connect_response *connect_res;
struct hbm_client_connect_response *disconnect_res;
@@ -478,8 +477,6 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
struct hbm_props_response *props_res;
struct hbm_host_enum_response *enum_res;
struct hbm_host_stop_request *stop_req;
int res;
/* read the message to our buffer */
BUG_ON(mei_hdr->length >= sizeof(dev->rd_msg_buf));
@@ -547,64 +544,37 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
case HOST_CLIENT_PROPERTIES_RES_CMD:
props_res = (struct hbm_props_response *)mei_msg;
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");
mei_reset(dev, 1);
return;
}
if (dev->me_clients[dev->me_client_presentation_num]
.client_id == props_res->address) {
dev->me_clients[dev->me_client_presentation_num].props
= props_res->client_properties;
if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
dev->init_clients_state ==
MEI_CLIENT_PROPERTIES_MESSAGE) {
dev->me_client_index++;
dev->me_client_presentation_num++;
/** Send Client Properties request **/
res = mei_host_client_properties(dev);
if (res < 0) {
dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed");
return;
} else if (!res) {
/*
* No more clients to send to.
* Clear Map for indicating now ME clients
* with associated host client
*/
bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
dev->open_handle_count = 0;
/*
* Reserving the first three client IDs
* Client Id 0 - Reserved for MEI Bus Message communications
* Client Id 1 - Reserved for Watchdog
* Client ID 2 - Reserved for AMTHI
*/
bitmap_set(dev->host_clients_map, 0, 3);
dev->dev_state = MEI_DEV_ENABLED;
/* if wd initialization fails, initialization the AMTHI client,
* otherwise the AMTHI client will be initialized after the WD client connect response
* will be received
*/
if (mei_wd_host_init(dev))
mei_amthif_host_init(dev);
}
} else {
dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message");
mei_reset(dev, 1);
return;
}
} else {
dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message for wrong client ID\n");
if (me_client->client_id != props_res->address) {
dev_err(&dev->pdev->dev,
"Host client properties reply 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");
mei_reset(dev, 1);
return;
}
me_client->props = props_res->client_properties;
dev->me_client_index++;
dev->me_client_presentation_num++;
mei_host_client_enumerate(dev);
break;
case HOST_ENUM_RES_CMD:
@@ -618,7 +588,8 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
mei_allocate_me_clients_storage(dev);
dev->init_clients_state =
MEI_CLIENT_PROPERTIES_MESSAGE;
mei_host_client_properties(dev);
mei_host_client_enumerate(dev);
} else {
dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
mei_reset(dev, 1);