Thread (15 messages) 15 messages, 3 authors, 2012-10-26

Re: [PATCH v2 net-next 2/2] r8169: update the settings for RTL8111G

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From: Francois Romieu <romieu@fr.zoreil.com>
Date: 2012-10-23 20:02:43
Also in: lkml

Hayes Wang [off-list ref] :
Update the parameters of RTL8111G
I am Jack's Broken Heart. :o/

In a not too distant future somebody may try to figure if things should
be fed into one of the numerous -stable trees. He will appreciate figuring
from the comment if this commit is supposed to fix anything or if it's a
pure performance thing or whatever.

The pll_power changes could be a bugfix for instance. The ALDPS change
isn't.
quoted hunk ↗ jump to hunk
Signed-off-by: Hayes Wang <redacted>
---
 drivers/net/ethernet/realtek/r8169.c | 118 ++++++++++++++++++++++++++++++-----
 1 file changed, 101 insertions(+), 17 deletions(-)
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index cdd46de..3a393f7 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
[...]
quoted hunk ↗ jump to hunk
@@ -3400,29 +3410,57 @@ static void rtl8168g_1_hw_phy_config(struct rtl8169_private *tp)
 {
 	static const u16 mac_ocp_patch[] = {
 		0xe008, 0xe01b, 0xe01d, 0xe01f,
-		0xe021, 0xe023, 0xe025, 0xe027,
+		0xe022, 0xe025, 0xe031, 0xe04d,
 		0x49d2, 0xf10d, 0x766c, 0x49e2,
 		0xf00a, 0x1ec0, 0x8ee1, 0xc60a,
-
 		0x77c0, 0x4870, 0x9fc0, 0x1ea0,
 		0xc707, 0x8ee1, 0x9d6c, 0xc603,
 		0xbe00, 0xb416, 0x0076, 0xe86c,
-		0xc602, 0xbe00, 0x0000, 0xc602,
-
-		0xbe00, 0x0000, 0xc602, 0xbe00,
-		0x0000, 0xc602, 0xbe00, 0x0000,
-		0xc602, 0xbe00, 0x0000, 0xc602,
-		0xbe00, 0x0000, 0xc602, 0xbe00,
-
-		0x0000, 0x0000, 0x0000, 0x0000
+		0xc602, 0xbe00, 0xa000, 0xc602,
+		0xbe00, 0x0000, 0x1b76, 0xc202,
+		0xba00, 0x059c, 0x1b76, 0xc602,
+		0xbe00, 0x065a, 0x74e6, 0x1b78,
+		0x46dc, 0x1300, 0xf005, 0x74f8,
+		0x48c3, 0x48c4, 0x8cf8, 0x64e7,
+		0xc302, 0xbb00, 0x06a0, 0x74e4,
+		0x49c5, 0xf106, 0x49c6, 0xf107,
+		0x48c8, 0x48c9, 0xe011, 0x48c9,
+		0x4848, 0xe00e, 0x4848, 0x49c7,
+		0xf00a, 0x48c9, 0xc60d, 0x1d1f,
+		0x8dc2, 0x1d00, 0x8dc3, 0x1d11,
+		0x8dc0, 0xe002, 0x4849, 0x94e5,
+		0xc602, 0xbe00, 0x01f0, 0xe434,
+		0x49d9, 0xf01b, 0xc31e, 0x7464,
+		0x49c4, 0xf114, 0xc31b, 0x6460,
+		0x14fa, 0xfa02, 0xe00f, 0xc317,
+		0x7460, 0x49c0, 0xf10b, 0xc311,
+		0x7462, 0x48c1, 0x9c62, 0x4841,
+		0x9c62, 0xc30a, 0x1c04, 0x8c60,
+		0xe004, 0x1c15, 0xc305, 0x8c60,
+		0xc602, 0xbe00, 0x0384, 0xe434,
+		0xe030, 0xe61c, 0xe906
 	};
Do you remember why firmware loading was introduced in the first place ?

I find it increasingly hard to believe that it does not apply here.

[...]
quoted hunk ↗ jump to hunk
 	/* Patch code for GPHY reset */
+	r8168_mac_ocp_write(tp, 0xfc26, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc28, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc2a, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc2c, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc2e, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc30, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc32, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc34, 0x0000);
+	r8168_mac_ocp_write(tp, 0xfc36, 0x0000);
 	for (i = 0; i < ARRAY_SIZE(mac_ocp_patch); i++)
-		r8168_mac_ocp_write(tp, 0xf800 + 2*i, mac_ocp_patch[i]);
+		r8168_mac_ocp_write(tp, 0xf800 + 2 * i, mac_ocp_patch[i]);
 	r8168_mac_ocp_write(tp, 0xfc26, 0x8000);
 	r8168_mac_ocp_write(tp, 0xfc28, 0x0075);
+	r8168_mac_ocp_write(tp, 0xfc2e, 0x059b);
+	r8168_mac_ocp_write(tp, 0xfc30, 0x0659);
+	r8168_mac_ocp_write(tp, 0xfc32, 0x069f);
+	r8168_mac_ocp_write(tp, 0xfc34, 0x01cd);
+	r8168_mac_ocp_write(tp, 0xfc36, 0x0303);
Within a few weeks / months there will be a new update with a new
set of completely obscure parameters. It will takes a kernel cycle or
more to be distributed.

There should be some higher level data struct that could use a mundane
"for" loop and some indirection in place of this code bloat.

It is getting out of control.

-- 
Ueimor
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