iwlwifi: mvm: LAR: Add chub mcc change notify command

Chub (Communication Hub, CommsHUB) is a HW component that connects to the cellular
and connectivity cores that gets updates of mcc changes, and then notifies the FW
directly of any mcc change.

The ucode notifies the driver (via this command) that it should ask for an mcc update,
and the driver sends the ucode the update mcc command to set the updated regulatory info.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 25 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/nvm.c b/drivers/net/wireless/iwlwifi/mvm/nvm.c
index 907e231f2c5c..b88b4cd07a22 100644
--- a/drivers/net/wireless/iwlwifi/mvm/nvm.c
+++ b/drivers/net/wireless/iwlwifi/mvm/nvm.c
@@ -689,6 +689,30 @@ int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
 	 * unknown-country "99" code. This will also clear the "custom reg"
 	 * flag and allow regdomain changes. It will happen after init since
 	 * RTNL is required.
+	 * Disallow scans that might crash the FW while the LAR regdomain
+	 * is not set.
 	 */
-	return regulatory_hint(mvm->hw->wiphy, "99");
+	mvm->lar_regdom_set = false;
+	return 0;
+}
+
+int iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
+			       struct iwl_rx_cmd_buffer *rxb,
+			       struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_mcc_chub_notif *notif = (void *)pkt->data;
+	char mcc[3];
+
+	if (WARN_ON_ONCE(!iwl_mvm_is_lar_supported(mvm)))
+		return -EOPNOTSUPP;
+
+	mcc[0] = notif->mcc >> 8;
+	mcc[1] = notif->mcc & 0xff;
+	mcc[2] = '\0';
+
+	IWL_DEBUG_LAR(mvm,
+		      "RX: received chub update mcc command (mcc 0x%x '%s')\n",
+		      notif->mcc, mcc);
+	return 0;
 }