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[11/20] thunderbolt: Fix PCIe adapter capability length for USB4 v2 routers

Message ID 20230531090645.5573-12-mika.westerberg@linux.intel.com
State Superseded
Headers show
Series thunderbolt: Initial USB4 v2 support | expand

Commit Message

Mika Westerberg May 31, 2023, 9:06 a.m. UTC 
From: Gil Fine <gil.fine@linux.intel.com>

For USB4 v2 routers, the PCIe adapter capability length is longer.
Display the correct capability length in the debugfs register dump.

Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
 drivers/thunderbolt/debugfs.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c
index 78bcf77831fe..c9ddd49138d8 100644
--- a/drivers/thunderbolt/debugfs.c
+++ b/drivers/thunderbolt/debugfs.c
@@ -14,7 +14,8 @@ 
 #include "tb.h"
 #include "sb_regs.h"
 
-#define PORT_CAP_PCIE_LEN	1
+#define PORT_CAP_V1_PCIE_LEN	1
+#define PORT_CAP_V2_PCIE_LEN	2
 #define PORT_CAP_POWER_LEN	2
 #define PORT_CAP_LANE_LEN	3
 #define PORT_CAP_USB3_LEN	5
@@ -1175,7 +1176,10 @@  static void port_cap_show(struct tb_port *port, struct seq_file *s,
 
 	case TB_PORT_CAP_ADAP:
 		if (tb_port_is_pcie_down(port) || tb_port_is_pcie_up(port)) {
-			length = PORT_CAP_PCIE_LEN;
+			if (usb4_switch_version(port->sw) < 2)
+				length = PORT_CAP_V1_PCIE_LEN;
+			else
+				length = PORT_CAP_V2_PCIE_LEN;
 		} else if (tb_port_is_dpin(port)) {
 			if (usb4_switch_version(port->sw) < 2)
 				length = PORT_CAP_DP_V1_LEN;