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mei: extract supported features from the hbm version
extract supported hbm features and commands from the hbm version Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2af89db1d6
commit
bae1cc7d41
@ -372,7 +372,8 @@ static int mei_hbm_prop_req(struct mei_device *dev)
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* @dev: the device structure
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* @pg_cmd: the pg command code
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*
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* This function returns -EIO on write failure
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* returns -EIO on write failure
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* -EOPNOTSUPP if the operation is not supported by the protocol
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*/
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int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
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{
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@ -381,6 +382,9 @@ int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd)
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const size_t len = sizeof(struct hbm_power_gate);
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int ret;
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if (!dev->hbm_f_pg_supported)
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return -EOPNOTSUPP;
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mei_hbm_hdr(mei_hdr, len);
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req = (struct hbm_power_gate *)dev->wr_msg.data;
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@ -660,6 +664,23 @@ static int mei_hbm_fw_disconnect_req(struct mei_device *dev,
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return 0;
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}
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/**
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* mei_hbm_config_features: check what hbm features and commands
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* are supported by the fw
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*
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* @dev: the device structure
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*/
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static void mei_hbm_config_features(struct mei_device *dev)
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{
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/* Power Gating Isolation Support */
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dev->hbm_f_pg_supported = 0;
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if (dev->version.major_version > HBM_MAJOR_VERSION_PGI)
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dev->hbm_f_pg_supported = 1;
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if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&
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dev->version.minor_version >= HBM_MINOR_VERSION_PGI)
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dev->hbm_f_pg_supported = 1;
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}
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/**
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* mei_hbm_version_is_supported - checks whether the driver can
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@ -743,6 +764,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
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break;
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}
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mei_hbm_config_features(dev);
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if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
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dev->hbm_state != MEI_HBM_STARTING) {
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dev_err(&dev->pdev->dev, "hbm: start: state mismatch, [%d, %d]\n",
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@ -574,11 +574,7 @@ static bool mei_me_pg_is_enabled(struct mei_device *dev)
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if ((reg & ME_PGIC_HRA) == 0)
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goto notsupported;
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if (dev->version.major_version < HBM_MAJOR_VERSION_PGI)
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goto notsupported;
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if (dev->version.major_version == HBM_MAJOR_VERSION_PGI &&
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dev->version.minor_version < HBM_MINOR_VERSION_PGI)
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if (!dev->hbm_f_pg_supported)
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goto notsupported;
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return true;
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@ -402,6 +402,9 @@ struct mei_cfg {
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*
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* @reset_count - limits the number of consecutive resets
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* @hbm_state - state of host bus message protocol
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*
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* @hbm_f_pg_supported - hbm feature pgi protocol
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*
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* @pg_event - power gating event
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* @mem_addr - mem mapped base register address
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@ -476,6 +479,7 @@ struct mei_device {
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} wr_msg;
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struct hbm_version version;
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unsigned int hbm_f_pg_supported:1;
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struct list_head me_clients;
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DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX);
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