Commit bae1cc7d authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

mei: extract supported features from the hbm version 



extract supported hbm features and commands from the hbm version

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2af89db1

drivers/misc/mei/hbm.c

+24 −1
Original line number Diff line number Diff line
@@ -372,7 +372,8 @@ static int mei_hbm_prop_req(struct mei_device *dev) 
 * @dev: the device structure

 * @pg_cmd: the pg command code

 *

 * This function returns -EIO on write failure

 * returns -EIO on write failure

 *         -EOPNOTSUPP if the operation is not supported by the protocol

 */

int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)

{
@@ -381,6 +382,9 @@ int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd) 
	const size_t len = sizeof(struct hbm_power_gate);

	int ret;



	if (!dev->hbm_f_pg_supported)

		return -EOPNOTSUPP;



	mei_hbm_hdr(mei_hdr, len);



	req = (struct hbm_power_gate *)dev->wr_msg.data;
@@ -660,6 +664,23 @@ static int mei_hbm_fw_disconnect_req(struct mei_device *dev, 
	return 0;

}



/**

 * mei_hbm_config_features: check what hbm features and commands

 *        are supported by the fw

 *

 * @dev: the device structure

 */

static void mei_hbm_config_features(struct mei_device *dev)

{

	/* Power Gating Isolation Support */

	dev->hbm_f_pg_supported = 0;

	if (dev->version.major_version > HBM_MAJOR_VERSION_PGI)

		dev->hbm_f_pg_supported = 1;



	if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&

	    dev->version.minor_version >= HBM_MINOR_VERSION_PGI)

		dev->hbm_f_pg_supported = 1;

}



/**

 * mei_hbm_version_is_supported - checks whether the driver can
@@ -743,6 +764,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) 
			break;

		}



		mei_hbm_config_features(dev);



		if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||

		    dev->hbm_state != MEI_HBM_STARTING) {

			dev_err(&dev->pdev->dev, "hbm: start: state mismatch, [%d, %d]\n",

drivers/misc/mei/hw-me.c

+1 −5
Original line number Diff line number Diff line
@@ -574,11 +574,7 @@ static bool mei_me_pg_is_enabled(struct mei_device *dev) 
	if ((reg & ME_PGIC_HRA) == 0)

		goto notsupported;



	if (dev->version.major_version < HBM_MAJOR_VERSION_PGI)

		goto notsupported;



	if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&

	    dev->version.minor_version < HBM_MINOR_VERSION_PGI)

	if (!dev->hbm_f_pg_supported)

		goto notsupported;



	return true;

drivers/misc/mei/mei_dev.h

+4 −0
Original line number Diff line number Diff line
@@ -402,6 +402,9 @@ struct mei_cfg { 
 *

 * @reset_count - limits the number of consecutive resets

 * @hbm_state - state of host bus message protocol

 *

 * @hbm_f_pg_supported - hbm feature pgi protocol

 *

 * @pg_event - power gating event

 * @mem_addr - mem mapped base register address
@@ -476,6 +479,7 @@ struct mei_device { 
	} wr_msg;



	struct hbm_version version;

	unsigned int hbm_f_pg_supported:1;



	struct list_head me_clients;

	DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX);