[<prev] [next>] [day] [month] [year] [list]
Message-ID: <1303771370-32579-2-git-send-email-mcarlson@broadcom.com>
Date: Mon, 25 Apr 2011 15:42:45 -0700
From: "Matt Carlson" <mcarlson@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, mcarlson@...adcom.com
Subject: [PATCH net-next 1/6] tg3: Fix int generation hw bug for 5719 /
5720
On the 5719 and 5720, there is a bug where the hardware will
misinterpret a status tag update and leave interrupts permanently
disabled. This patch enables a hardware fix that works around the
issue.
Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Reviewed-by: Michael Chan <mchan@...adcom.com>
Reviewed-by: Benjamin Li <benli@...adcom.com>
---
drivers/net/tg3.c | 3 +++
drivers/net/tg3.h | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 693f36e..a72d031 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -8198,6 +8198,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
~DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
if (tp->pci_chip_rev_id == CHIPREV_ID_57765_A0)
val &= ~DMA_RWCTRL_CRDRDR_RDMA_MRRS_MSK;
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_57765 &&
+ GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5717)
+ val |= DMA_RWCTRL_TAGGED_STAT_WA;
tw32(TG3PCI_DMA_RW_CTRL, val | tp->dma_rwctrl);
} else if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5784 &&
GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5761) {
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index eaa7669..6f37d2a 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -188,6 +188,7 @@
#define METAL_REV_B2 0x02
#define TG3PCI_DMA_RW_CTRL 0x0000006c
#define DMA_RWCTRL_DIS_CACHE_ALIGNMENT 0x00000001
+#define DMA_RWCTRL_TAGGED_STAT_WA 0x00000080
#define DMA_RWCTRL_CRDRDR_RDMA_MRRS_MSK 0x00000380
#define DMA_RWCTRL_READ_BNDRY_MASK 0x00000700
#define DMA_RWCTRL_READ_BNDRY_DISAB 0x00000000
--
1.7.3.4
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists