Re: [2.6.26-rc4] Problems with rt2x00 USB interface on powerpc (fwd)
From: Ivo van Doorn
Date: Sun Jun 29 2008 - 14:49:45 EST
Hi,
[Added rt2400-devel to CC list]
> > > > Did you receive my earlier message (attached here for reference)? I'm
> > > > willing to experiment with the driver a little bit and I hope that the
> > > > information that I have provided so far is helpful to chase the reason
> > > > why the driver doesn't work on PowerPC.
> > >
> > > Sorry I have been quite busy with other things.
> >
> > I'm terribly sorry for that, since I would like the driver to work with
> > the USB stick still in the 2.6.26 release (since that's what some
> > distributions will probably use).
>
> Just for your information, I just compiled the -rc7 kernel on x86-64 (where
> rt2500usb works if I boot with kernel 2.6.25) and still doesn't work (I'm
> not even mentioning here PowerPC).
In case other people are interested in the register differences as well,
attached is the real difference between the registers. Registers that are
different have the register name and meaning on the right side.
Interesting things to note:
- SIFS/EIFS timing is different, which is expected since rt2500usb now
listens to mac80211 for this information.
- Activity led is disabled, not interesting for this bug, but it really should have
been set to 1.
- mac80211 now uses short preamble
- Basic rates mask is 0, this is very odd....
- Link tuner value is set to 0, I seriously doubt that is a correct value
- TX power is different, mac80211 probably has set it to something different
Thats it for now, if anybody has any ideas, please let me know. :)
Ivo
2.6.25.4-1 | 2.6.26-rc5-2
driver: rt2500usb driver: rt2500usb
version: 2.0.14 | version: 2.1.4
compiled: Jun 13 2008 01:33:03 | compiled: Jun 8 2008 17:08:54
dev_flags: 0x0001012f | dev_flags: 0x00000e2f
rt chip: 1201 rt chip: 1201
rf chip: 0005 rf chip: 0005
revision:00000005 revision:00000005
csr length: 128 csr length: 128
eeprom length: 53 eeprom length: 53
bbp length: 96 bbp length: 96
rf length: 5 rf length: 5
csr csr
0 :0x0005 0 :0x0005
1 :0x0004 1 :0x0004
2 :0x1300 2 :0x1300
3 :0xe946 3 :0xe946
4 :0x8a8d 4 :0x8a8d
5 :0x1300 5 :0x1300
6 :0x5146 6 :0x5146
7 :0x6510 7 :0x6510
8 :0x0980 8 :0x0980
9 :0xff1d 9 :0xff1d
10 :0x0014 10 :0x0014
11 :0x0005 | 11 :0x000a MAC_CSR11: SIFS.
12 :0x016c | 12 :0x013a MAC_CSR12: EIFS.
13 :0x1111 13 :0x1111
14 :0x1e11 14 :0x1e11
15 :0x01ee 15 :0x01ee
16 :0x0000 16 :0x0000
17 :0x01fe 17 :0x01fe
18 :0x005a 18 :0x005a
19 :0xff00 19 :0xff00
20 :0x0003 | 20 :0x0002 MAC_CSR20: LED control register.
21 :0x1e46 21 :0x1e46
22 :0x0053 22 :0x0053
23 :0x0000 23 :0x0000
24 :0x0000 24 :0x0000
25 :0x0000 25 :0x0000
26 :0x0000 26 :0x0000
27 :0x0000 27 :0x0000
28 :0x0000 28 :0x0000
29 :0x0000 29 :0x0000
30 :0x0000 30 :0x0000
31 :0x0000 31 :0x0000
32 :0x1ec0 32 :0x1ec0
33 :0xb11a | 33 :0xb162 TXRX_CSR1: TX configuration.
34 :0x007e 34 :0x007e
35 :0xb3af 35 :0xb3af
36 :0xb3aa 36 :0xb3aa
37 :0x8c8d 37 :0x8c8d
38 :0x8b8a 38 :0x8b8a
39 :0x8687 39 :0x8687
40 :0x0085 40 :0x0085
41 :0x0162 41 :0x0162
42 :0x000e | 42 :0x000a TXRX_CSR10: Auto responder control.
43 :0x015f | 43 :0x0000 TXRX_CSR11: Auto responder basic rate.
44 :0x140a 44 :0x140a
45 :0x7038 45 :0x7038
46 :0x0c13 46 :0x0c13
47 :0x0609 47 :0x0609
48 :0x0305 48 :0x0305
49 :0x0203 49 :0x0203
50 :0xfa00 50 :0xfa00
51 :0x0003 | 51 :0x000b TXRX_CSR19: Synchronization control register.
52 :0x0003 52 :0x0003
53 :0xe78f 53 :0xe78f
54 :0x0000 54 :0x0000
55 :0x0000 55 :0x0000
56 :0x0000 56 :0x0000
57 :0x0000 57 :0x0000
58 :0x0000 58 :0x0000
59 :0x0000 59 :0x0000
60 :0x0000 60 :0x0000
61 :0x0000 61 :0x0000
62 :0x0000 62 :0x0000
63 :0x0000 63 :0x0000
64 :0x0000 64 :0x0000
65 :0x0000 65 :0x0000
66 :0x0000 66 :0x0000
67 :0x0000 67 :0x0000
68 :0x0000 68 :0x0000
69 :0x0000 69 :0x0000
70 :0x0000 70 :0x0000
71 :0x0000 71 :0x0000
72 :0x0000 72 :0x0000
73 :0x0000 73 :0x0000
74 :0x0000 74 :0x0000
75 :0x0000 75 :0x0000
76 :0x0000 76 :0x0000
77 :0x0000 77 :0x0000
78 :0x0000 78 :0x0000
79 :0x0000 79 :0x0000
80 :0x0000 80 :0x0000
81 :0x0000 81 :0x0000
82 :0x0000 82 :0x0000
83 :0x0000 83 :0x0000
84 :0x0000 84 :0x0000
85 :0x0000 85 :0x0000
86 :0x0000 86 :0x0000
87 :0x0000 87 :0x0000
88 :0x0000 88 :0x0000
89 :0x0000 89 :0x0000
90 :0x0000 90 :0x0000
91 :0x0000 91 :0x0000
92 :0x0000 92 :0x0000
93 :0x0000 93 :0x0000
94 :0x0000 94 :0x0000
95 :0x0000 95 :0x0000
96 :0x1221 96 :0x1221
97 :0x0003 97 :0x0003
98 :0x0000 98 :0x0000
99 :0x0000 99 :0x0000
100 :0x000f 100 :0x000f
101 :0x8206 101 :0x8206
102 :0x821e 102 :0x821e
103 :0x9160 | 103 :0x9100 PHY_CSR7: BBP access register 0.
104 :0x0000 104 :0x0000
105 :0x0e07 105 :0x0e07
106 :0x5400 106 :0x5400
107 :0x0000 107 :0x0000
108 :0x0000 108 :0x0000
109 :0x0000 109 :0x0000
110 :0x0000 110 :0x0000
111 :0x0000 111 :0x0000
112 :0x0000 | 112 :0x032c STA_CSR0: FCS error count.
113 :0x01a9 | 113 :0xfb58 STA_CSR1: PLCP error count.
114 :0x0038 | 114 :0x6311 STA_CSR2: LONG error count.
115 :0x0000 | 115 :0x0a1f STA_CSR3: CCA false alarm.
116 :0x0000 116 :0x0000
117 :0x0000 117 :0x0000
118 :0x0169 | 118 :0x0000 STA_CSR6
119 :0x0011 | 119 :0x0000 STA_CSR7
120 :0x0000 120 :0x0000
121 :0x0000 121 :0x0000
122 :0x0a01 | 122 :0x02e1 STA_CSR10
123 :0x0000 123 :0x0000
124 :0x0000 124 :0x0000
125 :0x0000 125 :0x0000
126 :0x0000 126 :0x0000
127 :0x0000 127 :0x0000
eeprom eeprom
0 :0x2570 0 :0x2570
1 :0x0104 1 :0x0104
2 :0x1300 2 :0x1300
3 :0xe946 3 :0xe946
4 :0x8a8d 4 :0x8a8d
5 :0xffff 5 :0xffff
6 :0xffff 6 :0xffff
7 :0xffff 7 :0xffff
8 :0xffff 8 :0xffff
9 :0xffff 9 :0xffff
10 :0xffff 10 :0xffff
11 :0x2829 11 :0x2829
12 :0xfff0 12 :0xfff0
13 :0x00ff 13 :0x00ff
14 :0x112c 14 :0x112c
15 :0x1518 15 :0x1518
16 :0x1618 16 :0x1618
17 :0x3e00 17 :0x3e00
18 :0xffff 18 :0xffff
19 :0xffff 19 :0xffff
20 :0xffff 20 :0xffff
21 :0xffff 21 :0xffff
22 :0xffff 22 :0xffff
23 :0xffff 23 :0xffff
24 :0xffff 24 :0xffff
25 :0xffff 25 :0xffff
26 :0xffff 26 :0xffff
27 :0xffff 27 :0xffff
28 :0xffff 28 :0xffff
29 :0xffff 29 :0xffff
30 :0x1717 30 :0x1717
31 :0x1717 31 :0x1717
32 :0x1717 32 :0x1717
33 :0x1717 33 :0x1717
34 :0x1617 34 :0x1617
35 :0x1616 35 :0x1616
36 :0x1616 36 :0x1616
37 :0xffff 37 :0xffff
38 :0xffff 38 :0xffff
39 :0xffff 39 :0xffff
40 :0xffff 40 :0xffff
41 :0xffff 41 :0xffff
42 :0xffff 42 :0xffff
43 :0xffff 43 :0xffff
44 :0xffff 44 :0xffff
45 :0xffff 45 :0xffff
46 :0xffff 46 :0xffff
47 :0xffff 47 :0xffff
48 :0x0032 48 :0x0032
49 :0x6880 49 :0x6880
50 :0x3850 50 :0x3850
51 :0x6f5f 51 :0x6f5f
52 :0xff37 | 52 :0xfa00
bbp bbp
0 :0x13 0 :0x13
1 :0x45 | 1 :0x55
2 :0x1e | 2 :0x06 R2: TX antenna control
3 :0x02 3 :0x02
4 :0x19 4 :0x19
5 :0x09 | 5 :0x0b
6 :0x00 | 6 :0x10
7 :0x0e | 7 :0x00
8 :0x00 8 :0x00
9 :0x00 9 :0x00
10 :0x00 10 :0x00
11 :0x04 11 :0x04
12 :0x00 | 12 :0x01
13 :0x70 | 13 :0xa8
14 :0x1a 14 :0x1a
15 :0x30 15 :0x30
16 :0xac 16 :0xac
17 :0x60 | 17 :0x00
18 :0x18 18 :0x18
19 :0xff 19 :0xff
20 :0x1e 20 :0x1e
21 :0x18 21 :0x18
22 :0x18 22 :0x18
23 :0x08 23 :0x08
24 :0x68 | 24 :0x80
25 :0x38 | 25 :0x50
26 :0x08 26 :0x08
27 :0x23 27 :0x23
28 :0x18 28 :0x18
29 :0x18 29 :0x18
30 :0x10 30 :0x10
31 :0x2b 31 :0x2b
32 :0xb9 32 :0xb9
33 :0x55 33 :0x55
34 :0x12 34 :0x12
35 :0x50 35 :0x50
36 :0x11 36 :0x11
37 :0x05 37 :0x05
38 :0x00 38 :0x00
39 :0xc4 39 :0xc4
40 :0x02 40 :0x02
41 :0x60 41 :0x60
42 :0x08 | 42 :0x09
43 :0x01 | 43 :0x34
44 :0x78 | 44 :0x0b
45 :0x00 | 45 :0x6e
46 :0x38 | 46 :0x70
47 :0x0a 47 :0x0a
48 :0x04 48 :0x04
49 :0x02 49 :0x02
50 :0x68 50 :0x68
51 :0x56 | 51 :0x18
52 :0x2e | 52 :0x04
53 :0x10 53 :0x10
54 :0x18 54 :0x18
55 :0x7b | 55 :0x2d
56 :0x08 56 :0x08
57 :0x10 57 :0x10
58 :0x08 58 :0x08
59 :0x02 59 :0x02
60 :0x3f | 60 :0x3e
61 :0x6f | 61 :0x5f
62 :0x00 62 :0x00
63 :0x00 63 :0x00
64 :0x01 64 :0x01
65 :0x03 65 :0x03
66 :0x00 66 :0x00
67 :0x00 67 :0x00
68 :0x00 68 :0x00
69 :0x00 69 :0x00
70 :0x46 70 :0x46
71 :0x00 71 :0x00
72 :0x00 72 :0x00
73 :0x00 73 :0x00
74 :0xd4 74 :0xd4
75 :0xff 75 :0xff
76 :0x19 76 :0x19
77 :0x05 77 :0x05
78 :0x08 78 :0x08
79 :0x00 79 :0x00
80 :0x00 80 :0x00
81 :0x05 81 :0x05
82 :0x14 82 :0x14
83 :0x50 83 :0x50
84 :0xc0 84 :0xc0
85 :0x10 85 :0x10
86 :0x74 | 86 :0xcf
87 :0x04 | 87 :0x00
88 :0x00 88 :0x00
89 :0x00 89 :0x00
90 :0x00 90 :0x00
91 :0x00 91 :0x00
92 :0x00 92 :0x00
93 :0x00 93 :0x00
94 :0x00 94 :0x00
95 :0x00 95 :0x00
rf rf
0 :0x00000000 0 :0x00000000
1 :0x00022010 1 :0x00022010
2 :0x000008a6 2 :0x000008a6
3 :0x00063711 | 3 :0x00062d11
4 :0x00000e07 4 :0x00000e07