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Merge branch 'dm9000' 

Nikita Kiryanov says:

====================
dm9000 improvements

This is a collection of improvements and bug fixes for dm9000, mostly
related to its startup and resume-from-suspend sequences.

Patch "Implement full reset of DM9000 network device" was submitted to the
linux-kernel mailing list but never applied.
An archive of the submission and the following conversation can be found here:
http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/02817.html
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2013-10-17 13:36:15 -04:00
parent e9e4ea74f0 727a282fdb
commit 6f93ac740a
1 changed files with 38 additions and 18 deletions
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56
drivers/net/ethernet/davicom/dm9000.c
View File

@ -158,18 +158,6 @@ static inline board_info_t *to_dm9000_board(struct net_device *dev)
/* DM9000 network board routine ---------------------------- */
static void
dm9000_reset(board_info_t * db)
{
dev_dbg(db->dev, "resetting device\n");
/* RESET device */
writeb(DM9000_NCR, db->io_addr);
udelay(200);
writeb(NCR_RST, db->io_data);
udelay(200);
}
/*
* Read a byte from I/O port
*/
@ -191,6 +179,27 @@ iow(board_info_t * db, int reg, int value)
writeb(value, db->io_data);
}
static void
dm9000_reset(board_info_t *db)
{
dev_dbg(db->dev, "resetting device\n");
/* Reset DM9000, see DM9000 Application Notes V1.22 Jun 11, 2004 page 29
* The essential point is that we have to do a double reset, and the
* instruction is to set LBK into MAC internal loopback mode.
*/
iow(db, DM9000_NCR, 0x03);
udelay(100); /* Application note says at least 20 us */
if (ior(db, DM9000_NCR) & 1)
dev_err(db->dev, "dm9000 did not respond to first reset\n");
iow(db, DM9000_NCR, 0);
iow(db, DM9000_NCR, 0x03);
udelay(100);
if (ior(db, DM9000_NCR) & 1)
dev_err(db->dev, "dm9000 did not respond to second reset\n");
}
/* routines for sending block to chip */
static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count)
@ -744,15 +753,20 @@ static const struct ethtool_ops dm9000_ethtool_ops = {
static void dm9000_show_carrier(board_info_t *db,
unsigned carrier, unsigned nsr)
{
int lpa;
struct net_device *ndev = db->ndev;
struct mii_if_info *mii = &db->mii;
unsigned ncr = dm9000_read_locked(db, DM9000_NCR);
if (carrier)
dev_info(db->dev, "%s: link up, %dMbps, %s-duplex, no LPA\n",
if (carrier) {
lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
dev_info(db->dev,
"%s: link up, %dMbps, %s-duplex, lpa 0x%04X\n",
ndev->name, (nsr & NSR_SPEED) ? 10 : 100,
(ncr & NCR_FDX) ? "full" : "half");
else
(ncr & NCR_FDX) ? "full" : "half", lpa);
} else {
dev_info(db->dev, "%s: link down\n", ndev->name);
}
}
static void
@ -890,9 +904,15 @@ dm9000_init_dm9000(struct net_device *dev)
(dev->features & NETIF_F_RXCSUM) ? RCSR_CSUM : 0);
iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */
iow(db, DM9000_GPR, 0);
dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */
dm9000_phy_write(dev, 0, MII_DM_DSPCR, DSPCR_INIT_PARAM); /* Init */
/* If we are dealing with DM9000B, some extra steps are required: a
* manual phy reset, and setting init params.
*/
if (db->type == TYPE_DM9000B) {
dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET);
dm9000_phy_write(dev, 0, MII_DM_DSPCR, DSPCR_INIT_PARAM);
}
ncr = (db->flags & DM9000_PLATF_EXT_PHY) ? NCR_EXT_PHY : 0;