[PATCH net-next 04/10] tg3: Fix NVRAM page writes on newer devices
From: Matt Carlson <hidden>
Date: 2012-02-14 01:21:03
Subsystem:
broadcom tg3 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Pavan Chebbi, Michael Chan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
On newer devices, the hardware expects the NVRAM address register to be written only once per NVRAM page. To do otherwise causes NVRAM corruption. This patch fixes the problem. Signed-off-by: Matt Carlson <redacted> --- drivers/net/ethernet/broadcom/tg3.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index cb17885..67b6d61 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c@@ -3140,8 +3140,6 @@ static int tg3_nvram_write_block_buffered(struct tg3 *tp, u32 offset, u32 len, phy_addr = tg3_nvram_phys_addr(tp, offset); - tw32(NVRAM_ADDR, phy_addr); - nvram_cmd = NVRAM_CMD_GO | NVRAM_CMD_DONE | NVRAM_CMD_WR; if (page_off == 0 || i == 0)
@@ -3152,6 +3150,11 @@ static int tg3_nvram_write_block_buffered(struct tg3 *tp, u32 offset, u32 len, if (i == (len - 4)) nvram_cmd |= NVRAM_CMD_LAST; + if ((nvram_cmd & NVRAM_CMD_FIRST) || + !tg3_flag(tp, FLASH) || + !tg3_flag(tp, 57765_PLUS)) + tw32(NVRAM_ADDR, phy_addr); + if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5752 && !tg3_flag(tp, 5755_PLUS) && (tp->nvram_jedecnum == JEDEC_ST) &&
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1.7.3.4