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path: root/drivers/net/e1000e/lib.c
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Diffstat (limited to 'drivers/net/e1000e/lib.c')
-rw-r--r--drivers/net/e1000e/lib.c50
1 files changed, 13 insertions, 37 deletions
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c
index 16f35fadb74b..95f75a43c9f9 100644
--- a/drivers/net/e1000e/lib.c
+++ b/drivers/net/e1000e/lib.c
@@ -589,9 +589,6 @@ static s32 e1000_set_default_fc_generic(struct e1000_hw *hw)
589 s32 ret_val; 589 s32 ret_val;
590 u16 nvm_data; 590 u16 nvm_data;
591 591
592 if (mac->fc != e1000_fc_default)
593 return 0;
594
595 /* Read and store word 0x0F of the EEPROM. This word contains bits 592 /* Read and store word 0x0F of the EEPROM. This word contains bits
596 * that determine the hardware's default PAUSE (flow control) mode, 593 * that determine the hardware's default PAUSE (flow control) mode,
597 * a bit that determines whether the HW defaults to enabling or 594 * a bit that determines whether the HW defaults to enabling or
@@ -1107,34 +1104,13 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
1107 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) { 1104 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
1108 mac->fc = e1000_fc_rx_pause; 1105 mac->fc = e1000_fc_rx_pause;
1109 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\r\n"); 1106 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\r\n");
1110 } 1107 } else {
1111 /* Per the IEEE spec, at this point flow control should be 1108 /*
1112 * disabled. However, we want to consider that we could 1109 * Per the IEEE spec, at this point flow control
1113 * be connected to a legacy switch that doesn't advertise 1110 * should be disabled.
1114 * desired flow control, but can be forced on the link 1111 */
1115 * partner. So if we advertised no flow control, that is
1116 * what we will resolve to. If we advertised some kind of
1117 * receive capability (Rx Pause Only or Full Flow Control)
1118 * and the link partner advertised none, we will configure
1119 * ourselves to enable Rx Flow Control only. We can do
1120 * this safely for two reasons: If the link partner really
1121 * didn't want flow control enabled, and we enable Rx, no
1122 * harm done since we won't be receiving any PAUSE frames
1123 * anyway. If the intent on the link partner was to have
1124 * flow control enabled, then by us enabling RX only, we
1125 * can at least receive pause frames and process them.
1126 * This is a good idea because in most cases, since we are
1127 * predominantly a server NIC, more times than not we will
1128 * be asked to delay transmission of packets than asking
1129 * our link partner to pause transmission of frames.
1130 */
1131 else if ((mac->original_fc == e1000_fc_none) ||
1132 (mac->original_fc == e1000_fc_tx_pause)) {
1133 mac->fc = e1000_fc_none; 1112 mac->fc = e1000_fc_none;
1134 hw_dbg(hw, "Flow Control = NONE.\r\n"); 1113 hw_dbg(hw, "Flow Control = NONE.\r\n");
1135 } else {
1136 mac->fc = e1000_fc_rx_pause;
1137 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\r\n");
1138 } 1114 }
1139 1115
1140 /* Now we need to do one last check... If we auto- 1116 /* Now we need to do one last check... If we auto-
@@ -1164,7 +1140,7 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
1164} 1140}
1165 1141
1166/** 1142/**
1167 * e1000e_get_speed_and_duplex_copper - Retreive current speed/duplex 1143 * e1000e_get_speed_and_duplex_copper - Retrieve current speed/duplex
1168 * @hw: pointer to the HW structure 1144 * @hw: pointer to the HW structure
1169 * @speed: stores the current speed 1145 * @speed: stores the current speed
1170 * @duplex: stores the current duplex 1146 * @duplex: stores the current duplex
@@ -1200,7 +1176,7 @@ s32 e1000e_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed, u16 *dup
1200} 1176}
1201 1177
1202/** 1178/**
1203 * e1000e_get_speed_and_duplex_fiber_serdes - Retreive current speed/duplex 1179 * e1000e_get_speed_and_duplex_fiber_serdes - Retrieve current speed/duplex
1204 * @hw: pointer to the HW structure 1180 * @hw: pointer to the HW structure
1205 * @speed: stores the current speed 1181 * @speed: stores the current speed
1206 * @duplex: stores the current duplex 1182 * @duplex: stores the current duplex
@@ -1410,7 +1386,7 @@ s32 e1000e_cleanup_led_generic(struct e1000_hw *hw)
1410 * e1000e_blink_led - Blink LED 1386 * e1000e_blink_led - Blink LED
1411 * @hw: pointer to the HW structure 1387 * @hw: pointer to the HW structure
1412 * 1388 *
1413 * Blink the led's which are set to be on. 1389 * Blink the LEDs which are set to be on.
1414 **/ 1390 **/
1415s32 e1000e_blink_led(struct e1000_hw *hw) 1391s32 e1000e_blink_led(struct e1000_hw *hw)
1416{ 1392{
@@ -1515,7 +1491,7 @@ void e1000e_set_pcie_no_snoop(struct e1000_hw *hw, u32 no_snoop)
1515 * @hw: pointer to the HW structure 1491 * @hw: pointer to the HW structure
1516 * 1492 *
1517 * Returns 0 if successful, else returns -10 1493 * Returns 0 if successful, else returns -10
1518 * (-E1000_ERR_MASTER_REQUESTS_PENDING) if master disable bit has not casued 1494 * (-E1000_ERR_MASTER_REQUESTS_PENDING) if master disable bit has not caused
1519 * the master requests to be disabled. 1495 * the master requests to be disabled.
1520 * 1496 *
1521 * Disables PCI-Express master access and verifies there are no pending 1497 * Disables PCI-Express master access and verifies there are no pending
@@ -1876,7 +1852,7 @@ static s32 e1000_ready_nvm_eeprom(struct e1000_hw *hw)
1876} 1852}
1877 1853
1878/** 1854/**
1879 * e1000e_read_nvm_spi - Read EEPROM's using SPI 1855 * e1000e_read_nvm_spi - Reads EEPROM using SPI
1880 * @hw: pointer to the HW structure 1856 * @hw: pointer to the HW structure
1881 * @offset: offset of word in the EEPROM to read 1857 * @offset: offset of word in the EEPROM to read
1882 * @words: number of words to read 1858 * @words: number of words to read
@@ -1980,7 +1956,7 @@ s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
1980 * Writes data to EEPROM at offset using SPI interface. 1956 * Writes data to EEPROM at offset using SPI interface.
1981 * 1957 *
1982 * If e1000e_update_nvm_checksum is not called after this function , the 1958 * If e1000e_update_nvm_checksum is not called after this function , the
1983 * EEPROM will most likley contain an invalid checksum. 1959 * EEPROM will most likely contain an invalid checksum.
1984 **/ 1960 **/
1985s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) 1961s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
1986{ 1962{
@@ -2222,7 +2198,7 @@ static u8 e1000_calculate_checksum(u8 *buffer, u32 length)
2222 * 2198 *
2223 * Returns E1000_success upon success, else E1000_ERR_HOST_INTERFACE_COMMAND 2199 * Returns E1000_success upon success, else E1000_ERR_HOST_INTERFACE_COMMAND
2224 * 2200 *
2225 * This function checks whether the HOST IF is enabled for command operaton 2201 * This function checks whether the HOST IF is enabled for command operation
2226 * and also checks whether the previous command is completed. It busy waits 2202 * and also checks whether the previous command is completed. It busy waits
2227 * in case of previous command is not completed. 2203 * in case of previous command is not completed.
2228 **/ 2204 **/
@@ -2254,7 +2230,7 @@ static s32 e1000_mng_enable_host_if(struct e1000_hw *hw)
2254} 2230}
2255 2231
2256/** 2232/**
2257 * e1000e_check_mng_mode - check managament mode 2233 * e1000e_check_mng_mode - check management mode
2258 * @hw: pointer to the HW structure 2234 * @hw: pointer to the HW structure
2259 * 2235 *
2260 * Reads the firmware semaphore register and returns true (>0) if 2236 * Reads the firmware semaphore register and returns true (>0) if