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Date: Fri, 19 Aug 2011 16:58:21 -0700
From: "Matt Carlson" <mcarlson@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, mcarlson@...adcom.com
Subject: [PATCH net-next 3/6] tg3: Pull phy int lpbk setup into separate
func
This patch pulls out the internal phy loopback setup code into a
separate function. This cleans up the loopback test code and makes it
available for NETIF_F_LOOPBACK support later.
Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Reviewed-by: Michael Chan <mchan@...adcom.com>
---
drivers/net/ethernet/broadcom/tg3.c | 149 +++++++++++++++++++++--------------
1 files changed, 90 insertions(+), 59 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 4529095..5e9d8a0 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -6370,6 +6370,80 @@ static void tg3_mac_loopback(struct tg3 *tp, bool enable)
udelay(40);
}
+static void tg3_phy_lpbk_set(struct tg3 *tp, u32 speed)
+{
+ u32 val, bmcr, mac_mode;
+
+ tg3_phy_toggle_apd(tp, false);
+ tg3_phy_toggle_automdix(tp, 0);
+
+ bmcr = BMCR_LOOPBACK | BMCR_FULLDPLX;
+ switch (speed) {
+ case SPEED_10:
+ break;
+ case SPEED_100:
+ bmcr |= BMCR_SPEED100;
+ break;
+ case SPEED_1000:
+ default:
+ if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
+ speed = SPEED_100;
+ bmcr |= BMCR_SPEED100;
+ } else {
+ speed = SPEED_1000;
+ bmcr |= BMCR_SPEED1000;
+ }
+ }
+
+ tg3_writephy(tp, MII_BMCR, bmcr);
+
+ /* The write needs to be flushed for the FETs */
+ if (tp->phy_flags & TG3_PHYFLG_IS_FET)
+ tg3_readphy(tp, MII_BMCR, &bmcr);
+
+ udelay(40);
+
+ if ((tp->phy_flags & TG3_PHYFLG_IS_FET) &&
+ GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {
+ tg3_writephy(tp, MII_TG3_FET_PTEST,
+ MII_TG3_FET_PTEST_FRC_TX_LINK |
+ MII_TG3_FET_PTEST_FRC_TX_LOCK);
+
+ /* The write needs to be flushed for the AC131 */
+ tg3_readphy(tp, MII_TG3_FET_PTEST, &val);
+ }
+
+ /* Reset to prevent losing 1st rx packet intermittently */
+ if ((tp->phy_flags & TG3_PHYFLG_MII_SERDES) &&
+ tg3_flag(tp, 5780_CLASS)) {
+ tw32_f(MAC_RX_MODE, RX_MODE_RESET);
+ udelay(10);
+ tw32_f(MAC_RX_MODE, tp->rx_mode);
+ }
+
+ mac_mode = tp->mac_mode &
+ ~(MAC_MODE_PORT_MODE_MASK | MAC_MODE_HALF_DUPLEX);
+ if (speed == SPEED_1000)
+ mac_mode |= MAC_MODE_PORT_MODE_GMII;
+ else
+ mac_mode |= MAC_MODE_PORT_MODE_MII;
+
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) {
+ u32 masked_phy_id = tp->phy_id & TG3_PHY_ID_MASK;
+
+ if (masked_phy_id == TG3_PHY_ID_BCM5401)
+ mac_mode &= ~MAC_MODE_LINK_POLARITY;
+ else if (masked_phy_id == TG3_PHY_ID_BCM5411)
+ mac_mode |= MAC_MODE_LINK_POLARITY;
+
+ tg3_writephy(tp, MII_TG3_EXT_CTRL,
+ MII_TG3_EXT_CTRL_LNK3_LED_MODE);
+ }
+
+ tw32(MAC_MODE, mac_mode);
+ udelay(40);
+}
+
static void tg3_set_loopback(struct net_device *dev, u32 features)
{
struct tg3 *tp = netdev_priv(dev);
@@ -11265,7 +11339,7 @@ static const u8 tg3_tso_header[] = {
static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
{
- u32 mac_mode, rx_start_idx, rx_idx, tx_idx, opaque_key;
+ u32 rx_start_idx, rx_idx, tx_idx, opaque_key;
u32 base_flags = 0, mss = 0, desc_idx, coal_now, data_off, val;
u32 budget;
struct sk_buff *skb, *rx_skb;
@@ -11286,56 +11360,6 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode)
}
coal_now = tnapi->coal_now | rnapi->coal_now;
- if (loopback_mode != TG3_MAC_LOOPBACK) {
- if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
- tg3_phy_fet_toggle_apd(tp, false);
- val = BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED100;
- } else
- val = BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
-
- tg3_phy_toggle_automdix(tp, 0);
-
- tg3_writephy(tp, MII_BMCR, val);
- udelay(40);
-
- mac_mode = tp->mac_mode &
- ~(MAC_MODE_PORT_MODE_MASK | MAC_MODE_HALF_DUPLEX);
- if (tp->phy_flags & TG3_PHYFLG_IS_FET) {
- tg3_writephy(tp, MII_TG3_FET_PTEST,
- MII_TG3_FET_PTEST_FRC_TX_LINK |
- MII_TG3_FET_PTEST_FRC_TX_LOCK);
- /* The write needs to be flushed for the AC131 */
- if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785)
- tg3_readphy(tp, MII_TG3_FET_PTEST, &val);
- mac_mode |= MAC_MODE_PORT_MODE_MII;
- } else
- mac_mode |= MAC_MODE_PORT_MODE_GMII;
-
- /* reset to prevent losing 1st rx packet intermittently */
- if (tp->phy_flags & TG3_PHYFLG_MII_SERDES) {
- tw32_f(MAC_RX_MODE, RX_MODE_RESET);
- udelay(10);
- tw32_f(MAC_RX_MODE, tp->rx_mode);
- }
- if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5700) {
- u32 masked_phy_id = tp->phy_id & TG3_PHY_ID_MASK;
- if (masked_phy_id == TG3_PHY_ID_BCM5401)
- mac_mode &= ~MAC_MODE_LINK_POLARITY;
- else if (masked_phy_id == TG3_PHY_ID_BCM5411)
- mac_mode |= MAC_MODE_LINK_POLARITY;
- tg3_writephy(tp, MII_TG3_EXT_CTRL,
- MII_TG3_EXT_CTRL_LNK3_LED_MODE);
- }
- tw32(MAC_MODE, mac_mode);
-
- /* Wait for link */
- for (i = 0; i < 100; i++) {
- if (tr32(MAC_TX_STATUS) & TX_STATUS_LINK_UP)
- break;
- mdelay(1);
- }
- }
-
err = -EIO;
tx_len = pktsz;
@@ -11547,10 +11571,6 @@ static int tg3_test_loopback(struct tg3 *tp)
tw32(i, 0x0);
}
- /* Turn off gphy autopowerdown. */
- if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
- tg3_phy_toggle_apd(tp, false);
-
/* HW errata - mac loopback fails in some cases on 5780.
* Normal traffic and PHY loopback are not affected by
* errata. Also, the MAC loopback test is deprecated for
@@ -11574,6 +11594,17 @@ static int tg3_test_loopback(struct tg3 *tp)
if (!(tp->phy_flags & TG3_PHYFLG_PHY_SERDES) &&
!tg3_flag(tp, USE_PHYLIB)) {
+ int i;
+
+ tg3_phy_lpbk_set(tp, 0);
+
+ /* Wait for link */
+ for (i = 0; i < 100; i++) {
+ if (tr32(MAC_TX_STATUS) & TX_STATUS_LINK_UP)
+ break;
+ mdelay(1);
+ }
+
if (tg3_run_loopback(tp, ETH_FRAME_LEN, TG3_PHY_LOOPBACK))
err |= TG3_STD_LOOPBACK_FAILED <<
TG3_PHY_LOOPBACK_SHIFT;
@@ -11585,11 +11616,11 @@ static int tg3_test_loopback(struct tg3 *tp)
tg3_run_loopback(tp, 9000 + ETH_HLEN, TG3_PHY_LOOPBACK))
err |= TG3_JMB_LOOPBACK_FAILED <<
TG3_PHY_LOOPBACK_SHIFT;
- }
- /* Re-enable gphy autopowerdown. */
- if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
- tg3_phy_toggle_apd(tp, true);
+ /* Re-enable gphy autopowerdown. */
+ if (tp->phy_flags & TG3_PHYFLG_ENABLE_APD)
+ tg3_phy_toggle_apd(tp, true);
+ }
done:
tp->phy_flags |= eee_cap;
--
1.7.3.4
--
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