diff mbox series

r8152: Add support for MAC address pass through on RTL8153-BND

Message ID 1544537774-4370-1-git-send-email-mario.limonciello@dell.com (mailing list archive)
State Accepted
Commit 9c27369f4a1393452c17e8708c1b0beb8ac59501
Headers show
Series r8152: Add support for MAC address pass through on RTL8153-BND | expand

Commit Message

Limonciello, Mario Dec. 11, 2018, 2:16 p.m. UTC
All previous docks and dongles that have supported this feature use
the RTL8153-AD chip.

RTL8153-BND is a new chip that will be used in upcoming Dell type-C docks.
It should be added to the whitelist of devices to activate MAC address
pass through.

Per confirming with Realtek all devices containing RTL8153-BND should
activate MAC pass through and there won't use pass through bit on efuse
like in RTL8153-AD.

Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
---
 drivers/net/usb/r8152.c | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

Comments

Perr Yuan Dec. 14, 2018, 1:04 p.m. UTC | #1
On 12/11/18 10:16 PM, Mario Limonciello wrote:
> All previous docks and dongles that have supported this feature use
> the RTL8153-AD chip.
>
> RTL8153-BND is a new chip that will be used in upcoming Dell type-C docks.
> It should be added to the whitelist of devices to activate MAC address
> pass through.
>
> Per confirming with Realtek all devices containing RTL8153-BND should
> activate MAC pass through and there won't use pass through bit on efuse
> like in RTL8153-AD.
>
> Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
> ---
>   drivers/net/usb/r8152.c | 33 ++++++++++++++++++++++-----------
>   1 file changed, 22 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index f1b5201..60dd1ec 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -129,6 +129,7 @@
>   #define USB_UPS_CTRL		0xd800
>   #define USB_POWER_CUT		0xd80a
>   #define USB_MISC_0		0xd81a
> +#define USB_MISC_1		0xd81f
>   #define USB_AFE_CTRL2		0xd824
>   #define USB_UPS_CFG		0xd842
>   #define USB_UPS_FLAGS		0xd848
> @@ -555,6 +556,7 @@ enum spd_duplex {
>   
>   /* MAC PASSTHRU */
>   #define AD_MASK			0xfee0
> +#define BND_MASK		0x0004
>   #define EFUSE			0xcfdb
>   #define PASS_THRU_MASK		0x1
>   
> @@ -1150,7 +1152,7 @@ static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
>   	return ret;
>   }
>   
> -/* Devices containing RTL8153-AD can support a persistent
> +/* Devices containing proper chips can support a persistent
>    * host system provided MAC address.
>    * Examples of this are Dell TB15 and Dell WD15 docks
>    */
> @@ -1165,13 +1167,23 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
>   
>   	/* test for -AD variant of RTL8153 */
>   	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
> -	if ((ocp_data & AD_MASK) != 0x1000)
> -		return -ENODEV;
> -
> -	/* test for MAC address pass-through bit */
> -	ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
> -	if ((ocp_data & PASS_THRU_MASK) != 1)
> -		return -ENODEV;
> +	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 */
> +		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
> +		if ((ocp_data & BND_MASK) == 0) {
> +			netif_dbg(tp, probe, tp->netdev,
> +				  "Invalid variant for MAC pass through\n");
> +			return -ENODEV;
> +		}
> +	}
>   
>   	/* returns _AUXMAC_#AABBCCDDEEFF# */
>   	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
> @@ -1217,9 +1229,8 @@ static int set_ethernet_addr(struct r8152 *tp)
>   	if (tp->version == RTL_VER_01) {
>   		ret = pla_ocp_read(tp, PLA_IDR, 8, sa.sa_data);
>   	} else {
> -		/* if this is not an RTL8153-AD, no eFuse mac pass thru set,
> -		 * or system doesn't provide valid _SB.AMAC this will be
> -		 * be expected to non-zero
> +		/* if device doesn't support MAC pass through this will
> +		 * be expected to be non-zero
>   		 */
>   		ret = vendor_mac_passthru_addr_read(tp, &sa);
>   		if (ret < 0)

Tested-by : Perry Yuan <pyuan@redhat.com>
David Miller Dec. 14, 2018, 10:38 p.m. UTC | #2
From: Mario Limonciello <mario.limonciello@dell.com>
Date: Tue, 11 Dec 2018 08:16:14 -0600

> All previous docks and dongles that have supported this feature use
> the RTL8153-AD chip.
> 
> RTL8153-BND is a new chip that will be used in upcoming Dell type-C docks.
> It should be added to the whitelist of devices to activate MAC address
> pass through.
> 
> Per confirming with Realtek all devices containing RTL8153-BND should
> activate MAC pass through and there won't use pass through bit on efuse
> like in RTL8153-AD.
> 
> Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>

Applied, thanks.
diff mbox series

Patch

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index f1b5201..60dd1ec 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -129,6 +129,7 @@ 
 #define USB_UPS_CTRL		0xd800
 #define USB_POWER_CUT		0xd80a
 #define USB_MISC_0		0xd81a
+#define USB_MISC_1		0xd81f
 #define USB_AFE_CTRL2		0xd824
 #define USB_UPS_CFG		0xd842
 #define USB_UPS_FLAGS		0xd848
@@ -555,6 +556,7 @@  enum spd_duplex {
 
 /* MAC PASSTHRU */
 #define AD_MASK			0xfee0
+#define BND_MASK		0x0004
 #define EFUSE			0xcfdb
 #define PASS_THRU_MASK		0x1
 
@@ -1150,7 +1152,7 @@  static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
 	return ret;
 }
 
-/* Devices containing RTL8153-AD can support a persistent
+/* Devices containing proper chips can support a persistent
  * host system provided MAC address.
  * Examples of this are Dell TB15 and Dell WD15 docks
  */
@@ -1165,13 +1167,23 @@  static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
 
 	/* test for -AD variant of RTL8153 */
 	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
-	if ((ocp_data & AD_MASK) != 0x1000)
-		return -ENODEV;
-
-	/* test for MAC address pass-through bit */
-	ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
-	if ((ocp_data & PASS_THRU_MASK) != 1)
-		return -ENODEV;
+	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 */
+		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
+		if ((ocp_data & BND_MASK) == 0) {
+			netif_dbg(tp, probe, tp->netdev,
+				  "Invalid variant for MAC pass through\n");
+			return -ENODEV;
+		}
+	}
 
 	/* returns _AUXMAC_#AABBCCDDEEFF# */
 	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
@@ -1217,9 +1229,8 @@  static int set_ethernet_addr(struct r8152 *tp)
 	if (tp->version == RTL_VER_01) {
 		ret = pla_ocp_read(tp, PLA_IDR, 8, sa.sa_data);
 	} else {
-		/* if this is not an RTL8153-AD, no eFuse mac pass thru set,
-		 * or system doesn't provide valid _SB.AMAC this will be
-		 * be expected to non-zero
+		/* if device doesn't support MAC pass through this will
+		 * be expected to be non-zero
 		 */
 		ret = vendor_mac_passthru_addr_read(tp, &sa);
 		if (ret < 0)