summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/intel/e1000/e1000_hw.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ethernet/intel/e1000/e1000_hw.c')
-rw-r--r--drivers/net/ethernet/intel/e1000/e1000_hw.c226
1 files changed, 99 insertions, 127 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_hw.c b/drivers/net/ethernet/intel/e1000/e1000_hw.c
index 48428d6a00be..0e5de52b1067 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_hw.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_hw.c
@@ -5,6 +5,7 @@
* Shared functions for accessing and configuring the MAC
*/
+#include <linux/bitfield.h>
#include "e1000.h"
static s32 e1000_check_downshift(struct e1000_hw *hw);
@@ -129,7 +130,6 @@ static s32 e1000_set_phy_type(struct e1000_hw *hw)
*/
static void e1000_phy_init_script(struct e1000_hw *hw)
{
- u32 ret_val;
u16 phy_saved_data;
if (hw->phy_init_script) {
@@ -138,7 +138,7 @@ static void e1000_phy_init_script(struct e1000_hw *hw)
/* Save off the current value of register 0x2F5B to be restored
* at the end of this routine.
*/
- ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
+ e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
/* Disabled the PHY transmitter */
e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
@@ -377,7 +377,6 @@ s32 e1000_reset_hw(struct e1000_hw *hw)
{
u32 ctrl;
u32 ctrl_ext;
- u32 icr;
u32 manc;
u32 led_ctrl;
s32 ret_val;
@@ -502,7 +501,7 @@ s32 e1000_reset_hw(struct e1000_hw *hw)
ew32(IMC, 0xffffffff);
/* Clear any pending interrupt events. */
- icr = er32(ICR);
+ er32(ICR);
/* If MWI was previously enabled, reenable it. */
if (hw->mac_type == e1000_82542_rev2_0) {
@@ -1185,6 +1184,7 @@ static s32 e1000_copper_link_igp_setup(struct e1000_hw *hw)
break;
case e1000_ms_auto:
phy_data &= ~CR_1000T_MS_ENABLE;
+ break;
default:
break;
}
@@ -1897,7 +1897,6 @@ void e1000_config_collision_dist(struct e1000_hw *hw)
/**
* e1000_config_mac_to_phy - sync phy and mac settings
* @hw: Struct containing variables accessed by shared code
- * @mii_reg: data to write to the MII control register
*
* Sets MAC speed and duplex settings to reflect the those in the PHY
* The contents of the PHY register containing the needed information need to
@@ -2002,7 +2001,7 @@ s32 e1000_force_mac_fc(struct e1000_hw *hw)
* 1: Rx flow control is enabled (we can receive pause
* frames but not send pause frames).
* 2: Tx flow control is enabled (we can send pause frames
- * frames but we do not receive pause frames).
+ * but we do not receive pause frames).
* 3: Both Rx and TX flow control (symmetric) is enabled.
* other: No other values should be possible at this point.
*/
@@ -2370,16 +2369,13 @@ static s32 e1000_check_for_serdes_link_generic(struct e1000_hw *hw)
*/
s32 e1000_check_for_link(struct e1000_hw *hw)
{
- u32 rxcw = 0;
- u32 ctrl;
u32 status;
u32 rctl;
u32 icr;
- u32 signal = 0;
s32 ret_val;
u16 phy_data;
- ctrl = er32(CTRL);
+ er32(CTRL);
status = er32(STATUS);
/* On adapters with a MAC newer than 82544, SW Definable pin 1 will be
@@ -2388,12 +2384,9 @@ s32 e1000_check_for_link(struct e1000_hw *hw)
*/
if ((hw->media_type == e1000_media_type_fiber) ||
(hw->media_type == e1000_media_type_internal_serdes)) {
- rxcw = er32(RXCW);
+ er32(RXCW);
if (hw->media_type == e1000_media_type_fiber) {
- signal =
- (hw->mac_type >
- e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
if (status & E1000_STATUS_LU)
hw->get_link_status = false;
}
@@ -2530,7 +2523,7 @@ s32 e1000_check_for_link(struct e1000_hw *hw)
* turn it on. For compatibility with a TBI link
* partner, we will store bad packets. Some
* frames have an additional byte on the end and
- * will look like CRC errors to to the hardware.
+ * will look like CRC errors to the hardware.
*/
if (!hw->tbi_compatibility_on) {
hw->tbi_compatibility_on = true;
@@ -2731,7 +2724,7 @@ static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count)
* e1000_shift_in_mdi_bits - Shifts data bits in from the PHY
* @hw: Struct containing variables accessed by shared code
*
- * Bits are shifted in in MSB to LSB order.
+ * Bits are shifted in MSB to LSB order.
*/
static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
{
@@ -2922,7 +2915,7 @@ static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
*
* @hw: Struct containing variables accessed by shared code
* @reg_addr: address of the PHY register to write
- * @data: data to write to the PHY
+ * @phy_data: data to write to the PHY
*
* Writes a value to a PHY register
*/
@@ -3268,8 +3261,7 @@ static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
return ret_val;
phy_info->mdix_mode =
- (e1000_auto_x_mode) ((phy_data & IGP01E1000_PSSR_MDIX) >>
- IGP01E1000_PSSR_MDIX_SHIFT);
+ (e1000_auto_x_mode)FIELD_GET(IGP01E1000_PSSR_MDIX, phy_data);
if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
IGP01E1000_PSSR_SPEED_1000MBPS) {
@@ -3280,11 +3272,11 @@ static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
if (ret_val)
return ret_val;
- phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
- SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
+ phy_info->local_rx = FIELD_GET(SR_1000T_LOCAL_RX_STATUS,
+ phy_data) ?
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
- phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
- SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
+ phy_info->remote_rx = FIELD_GET(SR_1000T_REMOTE_RX_STATUS,
+ phy_data) ?
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
/* Get cable length */
@@ -3334,14 +3326,12 @@ static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
return ret_val;
phy_info->extended_10bt_distance =
- ((phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >>
- M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT) ?
+ FIELD_GET(M88E1000_PSCR_10BT_EXT_DIST_ENABLE, phy_data) ?
e1000_10bt_ext_dist_enable_lower :
e1000_10bt_ext_dist_enable_normal;
phy_info->polarity_correction =
- ((phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >>
- M88E1000_PSCR_POLARITY_REVERSAL_SHIFT) ?
+ FIELD_GET(M88E1000_PSCR_POLARITY_REVERSAL, phy_data) ?
e1000_polarity_reversal_disabled : e1000_polarity_reversal_enabled;
/* Check polarity status */
@@ -3355,27 +3345,25 @@ static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
return ret_val;
phy_info->mdix_mode =
- (e1000_auto_x_mode) ((phy_data & M88E1000_PSSR_MDIX) >>
- M88E1000_PSSR_MDIX_SHIFT);
+ (e1000_auto_x_mode)FIELD_GET(M88E1000_PSSR_MDIX, phy_data);
if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
/* Cable Length Estimation and Local/Remote Receiver Information
* are only valid at 1000 Mbps.
*/
phy_info->cable_length =
- (e1000_cable_length) ((phy_data &
- M88E1000_PSSR_CABLE_LENGTH) >>
- M88E1000_PSSR_CABLE_LENGTH_SHIFT);
+ (e1000_cable_length)FIELD_GET(M88E1000_PSSR_CABLE_LENGTH,
+ phy_data);
ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
if (ret_val)
return ret_val;
- phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
- SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
+ phy_info->local_rx = FIELD_GET(SR_1000T_LOCAL_RX_STATUS,
+ phy_data) ?
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
- phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
- SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
+ phy_info->remote_rx = FIELD_GET(SR_1000T_REMOTE_RX_STATUS,
+ phy_data) ?
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
}
@@ -3523,7 +3511,7 @@ s32 e1000_init_eeprom_params(struct e1000_hw *hw)
if (ret_val)
return ret_val;
eeprom_size =
- (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT;
+ FIELD_GET(EEPROM_SIZE_MASK, eeprom_size);
/* 256B eeprom size was not supported in earlier hardware, so we
* bump eeprom_size up one to ensure that "1" (which maps to
* 256B) is never the result used in the shifting logic below.
@@ -3960,7 +3948,7 @@ static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
* @hw: Struct containing variables accessed by shared code
*
* Reads the first 64 16 bit words of the EEPROM and sums the values read.
- * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
+ * If the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
* valid.
*/
s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
@@ -3982,7 +3970,7 @@ s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
return E1000_SUCCESS;
#endif
- if (checksum == (u16)EEPROM_SUM)
+ if (checksum == EEPROM_SUM)
return E1000_SUCCESS;
else {
e_dbg("EEPROM Checksum Invalid\n");
@@ -4009,7 +3997,7 @@ s32 e1000_update_eeprom_checksum(struct e1000_hw *hw)
}
checksum += eeprom_data;
}
- checksum = (u16)EEPROM_SUM - checksum;
+ checksum = EEPROM_SUM - checksum;
if (e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) {
e_dbg("EEPROM Write Error\n");
return -E1000_ERR_EEPROM;
@@ -4384,7 +4372,7 @@ void e1000_rar_set(struct e1000_hw *hw, u8 *addr, u32 index)
/**
* e1000_write_vfta - Writes a value to the specified offset in the VLAN filter table.
* @hw: Struct containing variables accessed by shared code
- * @offset: Offset in VLAN filer table to write
+ * @offset: Offset in VLAN filter table to write
* @value: Value to write into VLAN filter table
*/
void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value)
@@ -4404,23 +4392,15 @@ void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value)
}
/**
- * e1000_clear_vfta - Clears the VLAN filer table
+ * e1000_clear_vfta - Clears the VLAN filter table
* @hw: Struct containing variables accessed by shared code
*/
static void e1000_clear_vfta(struct e1000_hw *hw)
{
u32 offset;
- u32 vfta_value = 0;
- u32 vfta_offset = 0;
- u32 vfta_bit_in_reg = 0;
for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
- /* If the offset we want to clear is the same offset of the
- * manageability VLAN ID, then clear all bits except that of the
- * manageability unit
- */
- vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
- E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value);
+ E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0);
E1000_WRITE_FLUSH();
}
}
@@ -4526,7 +4506,7 @@ s32 e1000_setup_led(struct e1000_hw *hw)
~IGP01E1000_GMII_SPD));
if (ret_val)
return ret_val;
- /* Fall Through */
+ fallthrough;
default:
if (hw->media_type == e1000_media_type_fiber) {
ledctl = er32(LEDCTL);
@@ -4571,7 +4551,7 @@ s32 e1000_cleanup_led(struct e1000_hw *hw)
hw->phy_spd_default);
if (ret_val)
return ret_val;
- /* Fall Through */
+ fallthrough;
default:
/* Restore LEDCTL settings */
ew32(LEDCTL, hw->ledctl_default);
@@ -4675,78 +4655,76 @@ s32 e1000_led_off(struct e1000_hw *hw)
*/
static void e1000_clear_hw_cntrs(struct e1000_hw *hw)
{
- volatile u32 temp;
-
- temp = er32(CRCERRS);
- temp = er32(SYMERRS);
- temp = er32(MPC);
- temp = er32(SCC);
- temp = er32(ECOL);
- temp = er32(MCC);
- temp = er32(LATECOL);
- temp = er32(COLC);
- temp = er32(DC);
- temp = er32(SEC);
- temp = er32(RLEC);
- temp = er32(XONRXC);
- temp = er32(XONTXC);
- temp = er32(XOFFRXC);
- temp = er32(XOFFTXC);
- temp = er32(FCRUC);
-
- temp = er32(PRC64);
- temp = er32(PRC127);
- temp = er32(PRC255);
- temp = er32(PRC511);
- temp = er32(PRC1023);
- temp = er32(PRC1522);
-
- temp = er32(GPRC);
- temp = er32(BPRC);
- temp = er32(MPRC);
- temp = er32(GPTC);
- temp = er32(GORCL);
- temp = er32(GORCH);
- temp = er32(GOTCL);
- temp = er32(GOTCH);
- temp = er32(RNBC);
- temp = er32(RUC);
- temp = er32(RFC);
- temp = er32(ROC);
- temp = er32(RJC);
- temp = er32(TORL);
- temp = er32(TORH);
- temp = er32(TOTL);
- temp = er32(TOTH);
- temp = er32(TPR);
- temp = er32(TPT);
-
- temp = er32(PTC64);
- temp = er32(PTC127);
- temp = er32(PTC255);
- temp = er32(PTC511);
- temp = er32(PTC1023);
- temp = er32(PTC1522);
-
- temp = er32(MPTC);
- temp = er32(BPTC);
+ er32(CRCERRS);
+ er32(SYMERRS);
+ er32(MPC);
+ er32(SCC);
+ er32(ECOL);
+ er32(MCC);
+ er32(LATECOL);
+ er32(COLC);
+ er32(DC);
+ er32(SEC);
+ er32(RLEC);
+ er32(XONRXC);
+ er32(XONTXC);
+ er32(XOFFRXC);
+ er32(XOFFTXC);
+ er32(FCRUC);
+
+ er32(PRC64);
+ er32(PRC127);
+ er32(PRC255);
+ er32(PRC511);
+ er32(PRC1023);
+ er32(PRC1522);
+
+ er32(GPRC);
+ er32(BPRC);
+ er32(MPRC);
+ er32(GPTC);
+ er32(GORCL);
+ er32(GORCH);
+ er32(GOTCL);
+ er32(GOTCH);
+ er32(RNBC);
+ er32(RUC);
+ er32(RFC);
+ er32(ROC);
+ er32(RJC);
+ er32(TORL);
+ er32(TORH);
+ er32(TOTL);
+ er32(TOTH);
+ er32(TPR);
+ er32(TPT);
+
+ er32(PTC64);
+ er32(PTC127);
+ er32(PTC255);
+ er32(PTC511);
+ er32(PTC1023);
+ er32(PTC1522);
+
+ er32(MPTC);
+ er32(BPTC);
if (hw->mac_type < e1000_82543)
return;
- temp = er32(ALGNERRC);
- temp = er32(RXERRC);
- temp = er32(TNCRS);
- temp = er32(CEXTERR);
- temp = er32(TSCTC);
- temp = er32(TSCTFC);
+ er32(ALGNERRC);
+ er32(RXERRC);
+ er32(TNCRS);
+ er32(CEXTERR);
+ er32(TSCTC);
+ er32(TSCTFC);
if (hw->mac_type <= e1000_82544)
return;
- temp = er32(MGTPRC);
- temp = er32(MGTPDC);
- temp = er32(MGTPTC);
+ er32(MGTPRC);
+ er32(MGTPDC);
+ er32(MGTPTC);
}
/**
@@ -4778,8 +4756,6 @@ void e1000_reset_adaptive(struct e1000_hw *hw)
/**
* e1000_update_adaptive - update adaptive IFS
* @hw: Struct containing variables accessed by shared code
- * @tx_packets: Number of transmits since last callback
- * @total_collisions: Number of collisions since last callback
*
* Called during the callback/watchdog routine to update IFS value based on
* the ratio of transmits to collisions.
@@ -4911,8 +4887,7 @@ static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length,
&phy_data);
if (ret_val)
return ret_val;
- cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
- M88E1000_PSSR_CABLE_LENGTH_SHIFT;
+ cable_length = FIELD_GET(M88E1000_PSSR_CABLE_LENGTH, phy_data);
/* Convert the enum value to ranged values */
switch (cable_length) {
@@ -5021,8 +4996,7 @@ static s32 e1000_check_polarity(struct e1000_hw *hw,
&phy_data);
if (ret_val)
return ret_val;
- *polarity = ((phy_data & M88E1000_PSSR_REV_POLARITY) >>
- M88E1000_PSSR_REV_POLARITY_SHIFT) ?
+ *polarity = FIELD_GET(M88E1000_PSSR_REV_POLARITY, phy_data) ?
e1000_rev_polarity_reversed : e1000_rev_polarity_normal;
} else if (hw->phy_type == e1000_phy_igp) {
@@ -5064,8 +5038,6 @@ static s32 e1000_check_polarity(struct e1000_hw *hw,
/**
* e1000_check_downshift - Check if Downshift occurred
* @hw: Struct containing variables accessed by shared code
- * @downshift: output parameter : 0 - No Downshift occurred.
- * 1 - Downshift occurred.
*
* returns: - E1000_ERR_XXX
* E1000_SUCCESS
@@ -5094,8 +5066,8 @@ static s32 e1000_check_downshift(struct e1000_hw *hw)
if (ret_val)
return ret_val;
- hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >>
- M88E1000_PSSR_DOWNSHIFT_SHIFT;
+ hw->speed_downgraded = FIELD_GET(M88E1000_PSSR_DOWNSHIFT,
+ phy_data);
}
return E1000_SUCCESS;
generated by cgit (git 2.34.1) at 2025-12-25 05:25:11 +0000