RTL8153-BL is used in Lenovo Thunderbolt4 dock.
Add the support of MAC passthrough.
This is ported from Realtek Outbox driver r8152.53.56-2.15.0.
There are 2 kinds of rules for MAC passthrough of Lenovo products,
1st USB vendor ID belongs to Lenovo, 2nd the chip of RTL8153-BL
is dedicated for Lenovo. Check flag and the ocp data first,
then set ACPI object names.
Suggested-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
---
v1 -> v2: fix whitespace in definition.
v2 -> v3: check flag of vendor/product ID to avoid it return error
drivers/net/usb/r8152.c | 45 +++++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 20 deletions(-)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index ee41088c5251..d8350d229f5c 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -718,6 +718,7 @@ enum spd_duplex {
#define AD_MASK 0xfee0
#define BND_MASK 0x0004
#define BD_MASK 0x0001
+#define BL_MASK BIT(3)
#define EFUSE 0xcfdb
#define PASS_THRU_MASK 0x1
@@ -1606,31 +1607,35 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
acpi_object_type mac_obj_type;
int mac_strlen;
+ /* test for -AD variant of RTL8153 */
+ ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
+ if ((ocp_data & AD_MASK) == 0x1000) {
+ /* test for MAC address pass-through bit */
+ ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
+ if ((ocp_data & PASS_THRU_MASK) != 1) {
+ netif_dbg(tp, probe, tp->netdev,
+ "No efuse for RTL8153-AD MAC pass through\n");
+ return -ENODEV;
+ }
+ } else {
+ ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
+ if (tp->lenovo_macpassthru ||
+ (tp->version == RTL_VER_09 && (ocp_data & BL_MASK))) {
+ /* test for Lenovo vender/product ID or RTL8153BL */
+ tp->lenovo_macpassthru = 1;
+ } else if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
+ /* test for RTL8153-BND and RTL8153-BD */
+ netif_dbg(tp, probe, tp->netdev,
+ "Invalid variant for MAC pass through\n");
+ return -ENODEV;
+ }
+ }
+
if (tp->lenovo_macpassthru) {
mac_obj_name = "\\MACA";
mac_obj_type = ACPI_TYPE_STRING;
mac_strlen = 0x16;
} else {
- /* test for -AD variant of RTL8153 */
- ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
- if ((ocp_data & AD_MASK) == 0x1000) {
- /* test for MAC address pass-through bit */
- ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
- if ((ocp_data & PASS_THRU_MASK) != 1) {
- netif_dbg(tp, probe, tp->netdev,
- "No efuse for RTL8153-AD MAC pass through\n");
- return -ENODEV;
- }
- } else {
- /* test for RTL8153-BND and RTL8153-BD */
- ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
- if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
- netif_dbg(tp, probe, tp->netdev,
- "Invalid variant for MAC pass through\n");
- return -ENODEV;
- }
- }
-
mac_obj_name = "\\_SB.AMAC";
mac_obj_type = ACPI_TYPE_BUFFER;
mac_strlen = 0x17;
--
2.32.0
