Fixing bug for DM9000B which is a DSP revision!
Had tested to Davicom DM9000 series include DM9000E(analog),
DM9000A(analog), DM9000B(dsp) and DM9000C(dsp) in X86 and
ARM Embedded Linux these years.
Signed-off-by: Joseph CHANG <josright...@gmail.com>
---
drivers/net/ethernet/davicom/dm9000.c | 12 ++++++++++--
drivers/net/ethernet/davicom/dm9000.h | 11 ++++++++++-
2 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/davicom/dm9000.c
b/drivers/net/ethernet/davicom/dm9000.c
index 8cdf025..252f1da 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -47,7 +47,7 @@
#define DM9000_PHY 0x40 /* PHY address 0x01 */
#define CARDNAME "dm9000"
-#define DRV_VERSION "1.31"
+#define DRV_VERSION "1.39"
/*
* Transmit timeout, default 5 seconds.
@@ -795,6 +795,8 @@ dm9000_init_dm9000(struct net_device *dev)
iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */
+ dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */
+
ncr = (db->flags & DM9000_PLATF_EXT_PHY) ? NCR_EXT_PHY : 0;
/* if wol is needed, then always set NCR_WAKEEN otherwise we end
@@ -830,6 +832,8 @@ dm9000_init_dm9000(struct net_device *dev)
db->tx_pkt_cnt = 0;
db->queue_pkt_len = 0;
dev->trans_start = jiffies;
+
+ dm9000_phy_write(dev, 0, MII_DM_DSPCR, DSPCR_INIT_PARAM); /* Init */
}
/* Our watchdog timed out. Called by the networking layer */
@@ -1502,7 +1506,11 @@ dm9000_probe(struct platform_device *pdev)
db->flags |= DM9000_PLATF_SIMPLE_PHY;
#endif
- dm9000_reset(db);
+ /* Fixing bug on dm9000_probe, takeover dm9000_reset(db),
+ * Need 'NCR_MAC_LBK' bit to indeed stable our DM9000 fifo
+ * while probe stage */
+
+ iow(db, DM9000_NCR, NCR_MAC_LBK | NCR_RST);
/* try multiple times, DM9000 sometimes gets the read wrong */
for (i = 0; i < 8; i++) {
diff --git a/drivers/net/ethernet/davicom/dm9000.h
b/drivers/net/ethernet/davicom/dm9000.h
index 55688bd..9ce058a 100644
--- a/drivers/net/ethernet/davicom/dm9000.h
+++ b/drivers/net/ethernet/davicom/dm9000.h
@@ -69,7 +69,9 @@
#define NCR_WAKEEN (1<<6)
#define NCR_FCOL (1<<4)
#define NCR_FDX (1<<3)
-#define NCR_LBK (3<<1)
+
+#define NCR_RESERVED (3<<1)
+#define NCR_MAC_LBK (1<<1)
#define NCR_RST (1<<0)
#define NSR_SPEED (1<<7)
@@ -167,5 +169,12 @@
#define ISR_LNKCHNG (1<<5)
#define ISR_UNDERRUN (1<<4)
+/* Davicom MII registers.
+ */
+
+#define MII_DM_DSPCR 0x1b /* DSP Control Register */
+
+#define DSPCR_INIT_PARAM 0xE100 /* DSP init parameter */
+
#endif /* _DM9000X_H_ */
--
1.7.1
--
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