linux-kernel - Re: r8169 mac address change (was Re: [0/3] 2.6.19-rc2: known regressions)

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Date:	Wed, 1 Nov 2006 22:35:09 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Darren Salt <linux@...mustbejoking.demon.co.uk>
Cc:	buytenh@...tstofly.org, g.liakhovetski@....de,
	romieu@...zoreil.com, torvalds@...l.org, bunk@...sta.de,
	akpm@...l.org, jgarzik@...ox.com, linux-kernel@...r.kernel.org,
	tmattox@...il.com, spiky.kiwi@...il.com, r.bhatia@...x.at,
	syed.azam@...com
Subject: Re: r8169 mac address change (was Re: [0/3] 2.6.19-rc2: known regressions)

Darren Salt <linux@...mustbejoking.demon.co.uk> :
[...]
> (This is one of two possible fixes, the other being the removal of the if()
> guarding the other tx/rx-enable call. Both work here.)

I'll update the patch with your change but the removal of the if() would
not match Realtek's init sequence.

Lennert, I have compared 2.6.19-rc4 + 0001-r8169-perform-a-PHY-reset-etc
with the serie of patches against 2.6.18-rc4 which was reported to work
on your n2100 (thread on netdev around 05/09/2006). Can you:

- apply the patch below on top of 2.6.19-rc4 + 0001 and see if it works ?
  Don't apply 0002, it is not required.

- if it works (it should if I have not messed it again), can you check
  that it still works if you do not apply the first hunk ? It should as
  well.

If everything went fine this far, it would be nice to know if both the
move of the write to ChipCmd and the mdio_write are required to fix
your issue (I'd expect the move alone to not be enough as 0002 got this
part right for the 8110sb).

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 50b753d..b2fdbb8 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -491,7 +491,7 @@ static int rtl8169_poll(struct net_devic
 #endif
 
 static const u16 rtl8169_intr_mask =
-	SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
+	LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK;
 static const u16 rtl8169_napi_event =
 	RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr;
 static const unsigned int rtl8169_rx_config =
@@ -1283,11 +1283,6 @@ static void rtl8169_hw_phy_config(struct
 	/* Shazam ! */
 
 	if (tp->mac_version == RTL_GIGA_MAC_VER_04) {
-		mdio_write(ioaddr, 31, 0x0001);
-		mdio_write(ioaddr,  9, 0x273a);
-		mdio_write(ioaddr, 14, 0x7bfb);
-		mdio_write(ioaddr, 27, 0x841e);
-
 		mdio_write(ioaddr, 31, 0x0002);
 		mdio_write(ioaddr,  1, 0x90d0);
 		mdio_write(ioaddr, 31, 0x0000);
@@ -1855,6 +1850,8 @@ rtl8169_hw_start(struct net_device *dev)
 
 
 	RTL_W8(Cfg9346, Cfg9346_Unlock);
+
+	RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
 	RTL_W8(EarlyTxThres, EarlyTxThld);
 
 	/* Low hurts. Let's disable the filtering. */
@@ -1895,7 +1892,7 @@ rtl8169_hw_start(struct net_device *dev)
 	RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr & DMA_32BIT_MASK));
 	RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr >> 32));
 	RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr & DMA_32BIT_MASK));
-	RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+
 	RTL_W8(Cfg9346, Cfg9346_Lock);
 
 	/* Initially a 10 us delay. Turned it into a PCI commit. - FR */
-
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