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authorStephen Hemminger <shemminger@osdl.org>2005-09-23 09:08:30 -0700
committerJeff Garzik <jgarzik@pobox.com>2005-09-23 19:07:12 -0400
commitc8868611389aa28e0e5e0d63f468727781eac68c (patch)
treeda07d9bb09f99cdcb058bed5117dcac998e0b8ae /drivers/net/skge.c
parent9389d79fbf9a0167ff2de87e8796c6bb803219bf (diff)
[PATCH] skge: fix Yukon-Lite A0 workaround
This is one of those workarounds sucked over from sk98lin driver. The skge driver needs to detect the Yukon-Lite A0 chip properly, and turn of Rx FIFO Flush. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/skge.c')
-rw-r--r--drivers/net/skge.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index ae1996a3bc5..fd398da4993 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -1643,6 +1643,22 @@ static void yukon_reset(struct skge_hw *hw, int port)
| GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
}
+/* Apparently, early versions of Yukon-Lite had wrong chip_id? */
+static int is_yukon_lite_a0(struct skge_hw *hw)
+{
+ u32 reg;
+ int ret;
+
+ if (hw->chip_id != CHIP_ID_YUKON)
+ return 0;
+
+ reg = skge_read32(hw, B2_FAR);
+ skge_write8(hw, B2_FAR + 3, 0xff);
+ ret = (skge_read8(hw, B2_FAR + 3) != 0);
+ skge_write32(hw, B2_FAR, reg);
+ return ret;
+}
+
static void yukon_mac_init(struct skge_hw *hw, int port)
{
struct skge_port *skge = netdev_priv(hw->dev[port]);
@@ -1758,9 +1774,11 @@ static void yukon_mac_init(struct skge_hw *hw, int port)
/* Configure Rx MAC FIFO */
skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
- if (hw->chip_id == CHIP_ID_YUKON_LITE &&
- hw->chip_rev >= CHIP_REV_YU_LITE_A3)
+
+ /* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
+ if (is_yukon_lite_a0(hw))
reg &= ~GMF_RX_F_FL_ON;
+
skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
/*