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Date: Sat, 5 Jan 1980 21:10:06 +0800 From: Joseph CHANG <josright123@...il.com> To: "David S. Miller" <davem@...emloft.net>, Bill Pemberton <wfp5p@...ginia.edu>, Matthew Leach <matthew@...tleach.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Joseph CHANG <joseph_chang@...icom.com.tw>, Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Joseph CHANG <josright123@...il.com> Subject: [PATCH 1/1] ethernet: dm9000 driver: davicom: upgrade driver 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 <josright123@...il.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 -- 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
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