On 09/28/2011 06:56 AM, Larry Finger wrote:
> The MAC address is read from EEROM in routines found in efuse.c, and
> should always be the same. If the value read is not a valid ethernet
> address, then a random one is set, which must be what is happening on
> your system. I'll get back to you on how to dump the entire efuse
> contents so that we can see what else might be wrong in its encoding.
> I will be out tomorrow, thus it will likely be Thursday before I can
> answer. Perhaps Chaoming will answer earlier.
I had some time on my hands, so I tried to figure out how to dump the
EEPROM data myself, and have done so using the following patch (based on
linux-3.0.4):
--- drivers/net/wireless/rtlwifi/rtl8192se/hw.c 2011-07-22
04:17:23.000000000 +0200
+++ /home/psychotic/Desktop/rtl8192se_hw.c 2011-09-29
01:16:09.361978051 +0200
@@ -1645,6 +1645,13 @@
RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG, ("MAP\n"),
hwinfo, HWSET_MAX_SIZE_92S);
+ printk("RTL8192SE - got EEPROM data:");
+ for (i = 0; i < HWSET_MAX_SIZE_92S; i++) {
+ if (i % 6 == 0)
+ printk("\n ");
+ printk("%02X ", hwinfo[i]);
+ }
+
eeprom_id = *((u16 *)&hwinfo[0]);
if (eeprom_id != RTL8190_EEPROM_ID) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
And here is the output I got right after inserting the rtl8192se module:
Sep 29 01:07:02 localhost kernel: [ 1160.153407] RTL8192SE - got EEPROM
data:
Sep 29 01:07:02 localhost kernel: [ 1160.153412] 29 81 00 00 A9 16
Sep 29 01:07:02 localhost kernel: [ 1160.153419] 00 00 00 00 EC 10
Sep 29 01:07:02 localhost kernel: [ 1160.153425] 72 81 EC 10 72 81
Sep 29 01:07:02 localhost kernel: [ 1160.153431] 1C 4B D6 69 6A DC
Sep 29 01:07:02 localhost kernel: [ 1160.153437] FF FF FF FF FF FF
Sep 29 01:07:02 localhost kernel: [ 1160.153443] FF FF 01 FF 13 AA
Sep 29 01:07:02 localhost kernel: [ 1160.153449] 03 02 20 80 02 B0
Sep 29 01:07:02 localhost kernel: [ 1160.153455] 06 91 A5 78 2A E4
Sep 29 01:07:02 localhost kernel: [ 1160.153461] 00 E0 4C FF FE 22
Sep 29 01:07:02 localhost kernel: [ 1160.153467] 55 88 C3 FF 84 75
Sep 29 01:07:02 localhost kernel: [ 1160.153473] 78 39 00 00 C1 8C
Sep 29 01:07:02 localhost kernel: [ 1160.153478] 80 11 40 00 11 3C
Sep 29 01:07:02 localhost kernel: [ 1160.153484] 03 00 10 20 00 00
Sep 29 01:07:02 localhost kernel: [ 1160.153490] 00 00 28 29 27 00
Sep 29 01:07:02 localhost kernel: [ 1160.153496] 00 00 28 28 28 00
Sep 29 01:07:02 localhost kernel: [ 1160.153502] 00 00 00 00 00 00
Sep 29 01:07:02 localhost kernel: [ 1160.153508] 00 00 00 00 00 04
Sep 29 01:07:02 localhost kernel: [ 1160.153514] 03 00 00 00 00 00
Sep 29 01:07:02 localhost kernel: [ 1160.153520] 00 01 00 00 00 00
Sep 29 01:07:02 localhost kernel: [ 1160.153526] 00 00 0E 00 04 11
Sep 29 01:07:02 localhost kernel: [ 1160.153531] 00 00 00 09 02 00
Sep 29 01:07:02 localhost kernel: [ 1160.153537] 02 00
I hope that saves you the time by not having to explain to me how to
dump the EEPROM data, and that you (any of you =)) can find something
useful in there.
What I have been able to tell from this is that the MAC address my
interface currently has is indeed the one saved in the EEPROM
(1C:4B:D6:69:6A:DC). Don't know why it would ever have another one...
Greetings,
Stefan Zwanenburg
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