e1000: Add enabled Jumbo frame support for 82573L
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h
index 0848e55..f565b20 100644
--- a/drivers/net/e1000/e1000_hw.h
+++ b/drivers/net/e1000/e1000_hw.h
@@ -1875,6 +1875,7 @@
#define E1000_MANC_TCO_RESET 0x00010000 /* TCO Reset Occurred */
#define E1000_MANC_RCV_TCO_EN 0x00020000 /* Receive TCO Packets Enabled */
#define E1000_MANC_REPORT_STATUS 0x00040000 /* Status Reporting Enabled */
+#define E1000_MANC_RCV_ALL 0x00080000 /* Receive All Enabled */
#define E1000_MANC_BLK_PHY_RST_ON_IDE 0x00040000 /* Block phy resets */
#define E1000_MANC_EN_MAC_ADDR_FILTER 0x00100000 /* Enable MAC address
* filtering */
@@ -2036,6 +2037,7 @@
#define EEPROM_INIT_CONTROL1_REG 0x000A
#define EEPROM_INIT_CONTROL2_REG 0x000F
#define EEPROM_INIT_CONTROL3_PORT_B 0x0014
+#define EEPROM_INIT_3GIO_3 0x001A
#define EEPROM_INIT_CONTROL3_PORT_A 0x0024
#define EEPROM_CFG 0x0012
#define EEPROM_FLASH_VERSION 0x0032
@@ -2085,6 +2087,9 @@
#define EEPROM_WORD0F_ANE 0x0800
#define EEPROM_WORD0F_SWPDIO_EXT 0x00F0
+/* Mask bits for fields in Word 0x1a of the EEPROM */
+#define EEPROM_WORD1A_ASPM_MASK 0x000C
+
/* For checksumming, the sum of all words in the EEPROM should equal 0xBABA. */
#define EEPROM_SUM 0xBABA
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 6603bd1..58561a4 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2978,6 +2978,7 @@
{
struct e1000_adapter *adapter = netdev_priv(netdev);
int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
+ uint16_t eeprom_data = 0;
if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
(max_frame > MAX_JUMBO_FRAME_SIZE)) {
@@ -2989,12 +2990,25 @@
switch (adapter->hw.mac_type) {
case e1000_82542_rev2_0:
case e1000_82542_rev2_1:
- case e1000_82573:
if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
return -EINVAL;
}
break;
+ case e1000_82573:
+ /* only enable jumbo frames if ASPM is disabled completely
+ * this means both bits must be zero in 0x1A bits 3:2 */
+ e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1,
+ &eeprom_data);
+ if (eeprom_data & EEPROM_WORD1A_ASPM_MASK) {
+ if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
+ DPRINTK(PROBE, ERR,
+ "Jumbo Frames not supported.\n");
+ return -EINVAL;
+ }
+ break;
+ }
+ /* fall through to get support */
case e1000_82571:
case e1000_82572:
#define MAX_STD_JUMBO_FRAME_SIZE 9234