From 80be44348e30b68d2d8c5b6d1b7e53f2c5659134 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Sun, 19 Nov 2006 14:07:28 -0800 Subject: [PATCH] [BNX2]: Improve SerDes handling. 1. Add support for 2.5Gbps forced speed setting. 2. Remove a long udelay() loop and change to msleep(). 3. Other misc. SerDes fixes. Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/bnx2.c | 60 ++++++++++++++++++++++++++++++---------------- drivers/net/bnx2.h | 2 ++ 2 files changed, 41 insertions(+), 21 deletions(-) diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index b60e45d1ce3..9b391cf80a3 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -860,7 +860,7 @@ bnx2_set_link(struct bnx2 *bp) u32 bmsr; u8 link_up; - if (bp->loopback == MAC_LOOPBACK) { + if (bp->loopback == MAC_LOOPBACK || bp->loopback == PHY_LOOPBACK) { bp->link_up = 1; return 0; } @@ -902,6 +902,7 @@ bnx2_set_link(struct bnx2 *bp) u32 bmcr; bnx2_read_phy(bp, MII_BMCR, &bmcr); + bmcr &= ~BCM5708S_BMCR_FORCE_2500; if (!(bmcr & BMCR_ANENABLE)) { bnx2_write_phy(bp, MII_BMCR, bmcr | BMCR_ANENABLE); @@ -988,7 +989,21 @@ bnx2_setup_serdes_phy(struct bnx2 *bp) u32 new_bmcr; int force_link_down = 0; - if (CHIP_NUM(bp) == CHIP_NUM_5708) { + bnx2_read_phy(bp, MII_ADVERTISE, &adv); + adv &= ~(ADVERTISE_1000XFULL | ADVERTISE_1000XHALF); + + bnx2_read_phy(bp, MII_BMCR, &bmcr); + new_bmcr = bmcr & ~(BMCR_ANENABLE | BCM5708S_BMCR_FORCE_2500); + new_bmcr |= BMCR_SPEED1000; + if (bp->req_line_speed == SPEED_2500) { + new_bmcr |= BCM5708S_BMCR_FORCE_2500; + bnx2_read_phy(bp, BCM5708S_UP1, &up1); + if (!(up1 & BCM5708S_UP1_2G5)) { + up1 |= BCM5708S_UP1_2G5; + bnx2_write_phy(bp, BCM5708S_UP1, up1); + force_link_down = 1; + } + } else if (CHIP_NUM(bp) == CHIP_NUM_5708) { bnx2_read_phy(bp, BCM5708S_UP1, &up1); if (up1 & BCM5708S_UP1_2G5) { up1 &= ~BCM5708S_UP1_2G5; @@ -997,12 +1012,6 @@ bnx2_setup_serdes_phy(struct bnx2 *bp) } } - bnx2_read_phy(bp, MII_ADVERTISE, &adv); - adv &= ~(ADVERTISE_1000XFULL | ADVERTISE_1000XHALF); - - bnx2_read_phy(bp, MII_BMCR, &bmcr); - new_bmcr = bmcr & ~BMCR_ANENABLE; - new_bmcr |= BMCR_SPEED1000; if (bp->req_duplex == DUPLEX_FULL) { adv |= ADVERTISE_1000XFULL; new_bmcr |= BMCR_FULLDPLX; @@ -1023,6 +1032,7 @@ bnx2_setup_serdes_phy(struct bnx2 *bp) bp->link_up = 0; netif_carrier_off(bp->dev); bnx2_write_phy(bp, MII_BMCR, new_bmcr); + bnx2_report_link(bp); } bnx2_write_phy(bp, MII_ADVERTISE, adv); bnx2_write_phy(bp, MII_BMCR, new_bmcr); @@ -1048,12 +1058,10 @@ bnx2_setup_serdes_phy(struct bnx2 *bp) if ((adv != new_adv) || ((bmcr & BMCR_ANENABLE) == 0)) { /* Force a link down visible on the other side */ if (bp->link_up) { - int i; - bnx2_write_phy(bp, MII_BMCR, BMCR_LOOPBACK); - for (i = 0; i < 110; i++) { - udelay(100); - } + spin_unlock_bh(&bp->phy_lock); + msleep(20); + spin_lock_bh(&bp->phy_lock); } bnx2_write_phy(bp, MII_ADVERTISE, new_adv); @@ -1397,7 +1405,7 @@ bnx2_set_phy_loopback(struct bnx2 *bp) for (i = 0; i < 10; i++) { if (bnx2_test_link(bp) == 0) break; - udelay(10); + msleep(100); } mac_mode = REG_RD(bp, BNX2_EMAC_MODE); @@ -3713,7 +3721,9 @@ bnx2_init_nic(struct bnx2 *bp) if ((rc = bnx2_reset_nic(bp, BNX2_DRV_MSG_CODE_RESET)) != 0) return rc; + spin_lock_bh(&bp->phy_lock); bnx2_init_phy(bp); + spin_unlock_bh(&bp->phy_lock); bnx2_set_link(bp); return 0; } @@ -3953,7 +3963,7 @@ bnx2_run_loopback(struct bnx2 *bp, int loopback_mode) bnx2_set_mac_loopback(bp); } else if (loopback_mode == BNX2_PHY_LOOPBACK) { - bp->loopback = 0; + bp->loopback = PHY_LOOPBACK; bnx2_set_phy_loopback(bp); } else @@ -4744,10 +4754,14 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) } else { if (bp->phy_flags & PHY_SERDES_FLAG) { - if ((cmd->speed != SPEED_1000) || - (cmd->duplex != DUPLEX_FULL)) { + if ((cmd->speed != SPEED_1000 && + cmd->speed != SPEED_2500) || + (cmd->duplex != DUPLEX_FULL)) + return -EINVAL; + + if (cmd->speed == SPEED_2500 && + !(bp->phy_flags & PHY_2_5G_CAPABLE_FLAG)) return -EINVAL; - } } else if (cmd->speed == SPEED_1000) { return -EINVAL; @@ -5289,6 +5303,8 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf) memset(buf, 0, sizeof(u64) * BNX2_NUM_TESTS); if (etest->flags & ETH_TEST_FL_OFFLINE) { + int i; + bnx2_netif_stop(bp); bnx2_reset_chip(bp, BNX2_DRV_MSG_CODE_DIAG); bnx2_free_skbs(bp); @@ -5313,9 +5329,11 @@ bnx2_self_test(struct net_device *dev, struct ethtool_test *etest, u64 *buf) } /* wait for link up */ - msleep_interruptible(3000); - if ((!bp->link_up) && !(bp->phy_flags & PHY_SERDES_FLAG)) - msleep_interruptible(4000); + for (i = 0; i < 7; i++) { + if (bp->link_up) + break; + msleep_interruptible(1000); + } } if (bnx2_test_nvram(bp) != 0) { diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h index ca31904893e..78ff09d70de 100644 --- a/drivers/net/bnx2.h +++ b/drivers/net/bnx2.h @@ -3696,6 +3696,8 @@ struct l2_fhdr { /* 5708 Serdes PHY registers */ +#define BCM5708S_BMCR_FORCE_2500 0x20 + #define BCM5708S_UP1 0xb #define BCM5708S_UP1_2G5 0x1 -- 2.41.0