1 files changed, 39 insertions, 5 deletions

diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index 7859bccc592d..d339ba835376 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -22,6 +22,7 @@
 #include "ctl.h"
 #include "nhi_regs.h"
 #include "tb.h"
+#include "tunnel.h"
 
 #define PCIE2CIO_CMD			0x30
 #define PCIE2CIO_CMD_TIMEOUT		BIT(31)
@@ -379,6 +380,27 @@ static bool icm_firmware_running(const struct tb_nhi *nhi)
 	return !!(val & REG_FW_STS_ICM_EN);
 }
 
+static void icm_xdomain_activated(struct tb_xdomain *xd, bool activated)
+{
+	struct tb_port *nhi_port, *dst_port;
+	struct tb *tb = xd->tb;
+
+	nhi_port = tb_switch_find_port(tb->root_switch, TB_TYPE_NHI);
+	dst_port = tb_xdomain_downstream_port(xd);
+
+	if (activated)
+		tb_tunnel_event(tb, TB_TUNNEL_ACTIVATED, TB_TUNNEL_DMA,
+				nhi_port, dst_port);
+	else
+		tb_tunnel_event(tb, TB_TUNNEL_DEACTIVATED, TB_TUNNEL_DMA,
+				nhi_port, dst_port);
+}
+
+static void icm_dp_event(struct tb *tb)
+{
+	tb_tunnel_event(tb, TB_TUNNEL_CHANGED, TB_TUNNEL_DP, NULL, NULL);
+}
+
 static bool icm_fr_is_supported(struct tb *tb)
 {
 	return !x86_apple_machine;
@@ -584,6 +606,7 @@ static int icm_fr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
 	if (reply.hdr.flags & ICM_FLAGS_ERROR)
 		return -EIO;
 
+	icm_xdomain_activated(xd, true);
 	return 0;
 }
 
@@ -603,6 +626,8 @@ static int icm_fr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
 	nhi_mailbox_cmd(tb->nhi, cmd, 1);
 	usleep_range(10, 50);
 	nhi_mailbox_cmd(tb->nhi, cmd, 2);
+
+	icm_xdomain_activated(xd, false);
 	return 0;
 }
 
@@ -762,7 +787,7 @@ icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr)
 		 * information might have changed for example by the
 		 * fact that a switch on a dual-link connection might
 		 * have been enumerated using the other link now. Make
-		 * sure our book keeping matches that.
+		 * sure our bookkeeping matches that.
 		 */
 		if (sw->depth == depth && sw_phy_port == phy_port &&
 		    !!sw->authorized == authorized) {
@@ -944,7 +969,7 @@ icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
 
 	/*
 	 * Look if there already exists an XDomain in the same place
-	 * than the new one and in that case remove it because it is
+	 * as the new one and in that case remove it because it is
 	 * most likely another host that got disconnected.
 	 */
 	xd = tb_xdomain_find_by_link_depth(tb, link, depth);
@@ -1151,6 +1176,7 @@ static int icm_tr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
 	if (reply.hdr.flags & ICM_FLAGS_ERROR)
 		return -EIO;
 
+	icm_xdomain_activated(xd, true);
 	return 0;
 }
 
@@ -1191,7 +1217,12 @@ static int icm_tr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd,
 		return ret;
 
 	usleep_range(10, 50);
-	return icm_tr_xdomain_tear_down(tb, xd, 2);
+	ret = icm_tr_xdomain_tear_down(tb, xd, 2);
+	if (ret)
+		return ret;
+
+	icm_xdomain_activated(xd, false);
+	return 0;
 }
 
 static void
@@ -1718,6 +1749,9 @@ static void icm_handle_notification(struct work_struct *work)
 			if (tb_is_xdomain_enabled())
 				icm->xdomain_disconnected(tb, n->pkg);
 			break;
+		case ICM_EVENT_DP_CONFIG_CHANGED:
+			icm_dp_event(tb);
+			break;
 		case ICM_EVENT_RTD3_VETO:
 			icm->rtd3_veto(tb, n->pkg);
 			break;
@@ -1966,7 +2000,7 @@ static int icm_driver_ready(struct tb *tb)
 	if (icm->safe_mode) {
 		tb_info(tb, "Thunderbolt host controller is in safe mode.\n");
 		tb_info(tb, "You need to update NVM firmware of the controller before it can be used.\n");
-		tb_info(tb, "For latest updates check https://thunderbolttechnology.net/updates.\n");
+		tb_info(tb, "Use fwupd tool to apply update. Check Documentation/admin-guide/thunderbolt.rst for details.\n");
 		return 0;
 	}
 
@@ -2137,7 +2171,7 @@ static int icm_runtime_resume_switch(struct tb_switch *sw)
 static int icm_runtime_resume(struct tb *tb)
 {
 	/*
-	 * We can reuse the same resume functionality than with system
+	 * We can reuse the same resume functionality as with system
 	 * suspend.
 	 */
 	icm_complete(tb);