diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sv-open.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sv-open.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sv-open.c b/drivers/net/wireless/iwlwifi/iwl-sv-open.c index 653b7870adc1..ed9bd91ece7a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sv-open.c +++ b/drivers/net/wireless/iwlwifi/iwl-sv-open.c @@ -105,6 +105,7 @@ struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, + [IWL_TM_ATTR_UCODE_OWNER] = { .type = NLA_U8, }, }; /* @@ -587,6 +588,42 @@ static int iwl_testmode_trace_dump(struct ieee80211_hw *hw, struct nlattr **tb, return -ENOBUFS; } +/* + * This function handles the user application switch ucode ownership. + * + * It retrieves the mandatory fields IWL_TM_ATTR_UCODE_OWNER and + * decide who the current owner of the uCode + * + * If the current owner is OWNERSHIP_TM, then the only host command + * can deliver to uCode is from testmode, all the other host commands + * will dropped. + * + * default driver is the owner of uCode in normal operational mode + * + * @hw: ieee80211_hw object that represents the device + * @tb: gnl message fields from the user space + */ +static int iwl_testmode_ownership(struct ieee80211_hw *hw, struct nlattr **tb) +{ + struct iwl_priv *priv = hw->priv; + u8 owner; + + if (!tb[IWL_TM_ATTR_UCODE_OWNER]) { + IWL_DEBUG_INFO(priv, "Error finding ucode owner\n"); + return -ENOMSG; + } + + owner = nla_get_u8(tb[IWL_TM_ATTR_UCODE_OWNER]); + if ((owner == IWL_OWNERSHIP_DRIVER) || (owner == IWL_OWNERSHIP_TM)) + priv->ucode_owner = owner; + else { + IWL_DEBUG_INFO(priv, "Invalid owner\n"); + return -EINVAL; + } + return 0; +} + + /* The testmode gnl message handler that takes the gnl message from the * user space and parses it per the policy iwl_testmode_gnl_msg_policy, then * invoke the corresponding handlers. @@ -656,6 +693,11 @@ int iwl_testmode_cmd(struct ieee80211_hw *hw, void *data, int len) result = iwl_testmode_trace(hw, tb); break; + case IWL_TM_CMD_APP2DEV_OWNERSHIP: + IWL_DEBUG_INFO(priv, "testmode change uCode ownership\n"); + result = iwl_testmode_ownership(hw, tb); + break; + default: IWL_DEBUG_INFO(priv, "Unknown testmode command\n"); result = -ENOSYS; |
