From 1a3190254c0d1d1951e1d7e93542387c6ec82384 Mon Sep 17 00:00:00 2001
From: Matt Carlson <mcarlson@broadcom.com>
Date: Mon, 12 Apr 2010 06:58:25 +0000
Subject: [PATCH] tg3: Set card 57765 card reader MRRS to 1024B
This patch sets the Maximum Read Request Size for the card reader
function to 1024 bytes to prevent an SD controller lockup.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/tg3.c | 2 ++
drivers/net/tg3.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 4ae01b3799f..a0ab89eb8bc 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -7704,6 +7704,8 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765) {
val = tr32(TG3PCI_DMA_RW_CTRL) &
~DMA_RWCTRL_DIS_CACHE_ALIGNMENT;
+ if (tp->pci_chip_rev_id == CHIPREV_ID_57765_A0)
+ val &= ~DMA_RWCTRL_CRDRDR_RDMA_MRRS_MSK;
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 8a6012ab23f..9e7fe0e7cdb 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -183,6 +183,7 @@
#define METAL_REV_B2 0x02
#define TG3PCI_DMA_RW_CTRL 0x0000006c
#define DMA_RWCTRL_DIS_CACHE_ALIGNMENT 0x00000001
+#define DMA_RWCTRL_CRDRDR_RDMA_MRRS_MSK 0x00000380
#define DMA_RWCTRL_READ_BNDRY_MASK 0x00000700
#define DMA_RWCTRL_READ_BNDRY_DISAB 0x00000000
#define DMA_RWCTRL_READ_BNDRY_16 0x00000100
--
2.20.1