From b3bff39a2b3574542f5007e19038393dfdd64c85 Mon Sep 17 00:00:00 2001 From: Valerie Henson Date: Mon, 12 Mar 2007 02:31:29 -0700 Subject: [PATCH] TULIP: Fix for 64-bit MIPS From: Jim Gifford , Grant Grundler , Peter Horton With Grant's help I was able to get the tulip driver to work with 64 bit MIPS. [VAL: I'm happy with the 1.5 ms max delay; it doesn't seem excessive.] Signed-off-by: Valerie Henson Signed-off-by: Andrew Morton Cc: Jeff Garzik Signed-off-by: Jeff Garzik --- drivers/net/tulip/media.c | 22 ++++++++++++++++++++-- drivers/net/tulip/tulip.h | 7 +++++-- 2 files changed, 25 insertions(+), 4 deletions(-) diff --git a/drivers/net/tulip/media.c b/drivers/net/tulip/media.c index 20bd52b86993..1594160a0f62 100644 --- a/drivers/net/tulip/media.c +++ b/drivers/net/tulip/media.c @@ -44,8 +44,10 @@ static const unsigned char comet_miireg2offset[32] = { /* MII transceiver control section. Read and write the MII registers using software-generated serial - MDIO protocol. See the MII specifications or DP83840A data sheet - for details. */ + MDIO protocol. + See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management functions") + or DP83840A data sheet for more details. + */ int tulip_mdio_read(struct net_device *dev, int phy_id, int location) { @@ -272,13 +274,29 @@ void tulip_select_media(struct net_device *dev, int startup) int reset_length = p[2 + init_length]; misc_info = (u16*)(reset_sequence + reset_length); if (startup) { + int timeout = 10; /* max 1 ms */ iowrite32(mtable->csr12dir | 0x100, ioaddr + CSR12); for (i = 0; i < reset_length; i++) iowrite32(reset_sequence[i], ioaddr + CSR12); + + /* flush posted writes */ + ioread32(ioaddr + CSR12); + + /* Sect 3.10.3 in DP83840A.pdf (p39) */ + udelay(500); + + /* Section 4.2 in DP83840A.pdf (p43) */ + /* and IEEE 802.3 "22.2.4.1.1 Reset" */ + while (timeout-- && + (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET)) + udelay(100); } for (i = 0; i < init_length; i++) iowrite32(init_sequence[i], ioaddr + CSR12); + + ioread32(ioaddr + CSR12); /* flush posted writes */ } + tmp_info = get_u16(&misc_info[1]); if (tmp_info) tp->advertising[phy_num] = tmp_info | 1; diff --git a/drivers/net/tulip/tulip.h b/drivers/net/tulip/tulip.h index 25f25da76917..ceac47e775ce 100644 --- a/drivers/net/tulip/tulip.h +++ b/drivers/net/tulip/tulip.h @@ -482,8 +482,11 @@ static inline void tulip_stop_rxtx(struct tulip_private *tp) udelay(10); if (!i) - printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed\n", - pci_name(tp->pdev)); + printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed" + " (CSR5 0x%x CSR6 0x%x)\n", + pci_name(tp->pdev), + ioread32(ioaddr + CSR5), + ioread32(ioaddr + CSR6)); } }