From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Matt Carlson" Subject: [PATCH net-next 02/11] tg3: Fix 5719 A0 tx completion bug Date: Tue, 25 Jan 2011 17:58:48 -0800 Message-ID: <1296007137-23146-3-git-send-email-mcarlson@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, andy@greyhouse.net, mcarlson@broadcom.com To: davem@davemloft.net Return-path: Received: from mms1.broadcom.com ([216.31.210.17]:1765 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752476Ab1AZB7U (ORCPT ); Tue, 25 Jan 2011 20:59:20 -0500 Sender: netdev-owner@vger.kernel.org List-ID: The 5719 A0 has a bug that manifests itself as if the chipset were reordering memory writes. The best known way to solve this problem is to turn off LSO and jumbo frames. Signed-off-by: Matt Carlson Reviewed-by: Michael Chan --- drivers/net/tg3.c | 12 ++++++++---- drivers/net/tg3.h | 1 + 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 07d4e61..8756f31 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -8108,8 +8108,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) /* Program the jumbo buffer descriptor ring control * blocks on those devices that have them. */ - if ((tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) && - !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) { + if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0 || + ((tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) && + !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS))) { /* Setup replenish threshold. */ tw32(RCVBDI_JUMBO_THRESH, tp->rx_jumbo_pending / 8); @@ -13329,7 +13330,9 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) } /* Determine TSO capabilities */ - if (tp->tg3_flags3 & TG3_FLG3_5717_PLUS) + if (tp->pci_chip_rev_id == CHIPREV_ID_5719_A0) + ; /* Do nothing. HW bug. */ + else if (tp->tg3_flags3 & TG3_FLG3_5717_PLUS) tp->tg3_flags2 |= TG3_FLG2_HW_TSO_3; else if ((tp->tg3_flags3 & TG3_FLG3_5755_PLUS) || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) @@ -13380,7 +13383,8 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) tp->tg3_flags3 |= TG3_FLG3_40BIT_DMA_LIMIT_BUG; } - if (tp->tg3_flags3 & TG3_FLG3_5717_PLUS) + if ((tp->tg3_flags3 & TG3_FLG3_5717_PLUS) && + tp->pci_chip_rev_id != CHIPREV_ID_5719_A0) tp->tg3_flags3 |= TG3_FLG3_USE_JUMBO_BDFLAG; if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) || diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 0a0987a..52ae644 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -141,6 +141,7 @@ #define CHIPREV_ID_57780_A1 0x57780001 #define CHIPREV_ID_5717_A0 0x05717000 #define CHIPREV_ID_57765_A0 0x57785000 +#define CHIPREV_ID_5719_A0 0x05719000 #define GET_ASIC_REV(CHIP_REV_ID) ((CHIP_REV_ID) >> 12) #define ASIC_REV_5700 0x07 #define ASIC_REV_5701 0x00 -- 1.7.2.2