Re: Sun GEM PPC32 Bug?
From: R. Herbst
Date: Tue Feb 08 2011 - 13:28:40 EST
Here is the cpuinfo:
cat /proc/cpuinfo
processor : 0
cpu : 7447A, altivec supported
clock : 1833.333326MHz
revision : 1.1 (pvr 8003 0101)
bogomips : 83.31
processor : 1
cpu : 7447A, altivec supported
clock : 1833.333326MHz
revision : 1.1 (pvr 8003 0101)
bogomips : 83.31
total bogomips : 166.63
timebase : 41659035
platform : PowerMac
model : PowerMac3,6
machine : PowerMac3,6
motherboard : PowerMac3,6 MacRISC2 MacRISC Power Macintosh
detected as : 129 (PowerMac G4 Windtunnel)
pmac flags : 00000010
L2 cache : 256K unified
pmac-generation : NewWorld
Memory : 2048 MB
The problems comes only when network going over 40MBit. Have tested with rsync and FTP. Same problem with samba connection.
Ragards
RÃdiger Herbst
On Sun, 2011-02-06 at 16:01 +0100, R. Herbst wrote:
Am 06.02.2011 00:45, schrieb Benjamin Herrenschmidt:
Actually, the second one is trivial, just modify gem_rxmac_interrupt()
as follow:
if (rxmac_stat& MAC_RXSTAT_OFLW) {
u32 smac = readl(gp->regs + MAC_SMACHINE);
netdev_err(dev, "RX MAC fifo overflow smac[%08x]\n", smac);
gp->net_stats.rx_over_errors++;
gp->net_stats.rx_fifo_errors++;
- ret = gem_rxmac_reset(gp);
+ ret = 1;
}
And tell us if that makes a difference.
Cheers,
Ben.
Am 07.02.2011 06:34, schrieb Benjamin Herrenschmidt:
What's your machine model (cat /proc/cpuinfo) and what do you do to
trigger the problem ? I'm trying to reproduce here and so far had
no success doing so.
Cheers,
Ben.
Okay. I have made the change. The only difference is that:
In /var/log/messages
Feb 6 15:52:12 G4 kernel: gem 0002:20:0f.0: eth0: RX MAC fifo
overflow smac[00810400]
Feb 6 15:52:12 G4 kernel: gem 0002:20:0f.0: eth0: Link is up at 1000
Mbps, full-duplex
Feb 6 15:52:12 G4 kernel: gem 0002:20:0f.0: eth0: Pause is disabled
Feb 6 15:57:10 G4 kernel: NETDEV WATCHDOG: eth0 (gem): transmit queue
0 timed out
Feb 6 15:57:10 G4 kernel: ------------[ cut here ]------------
Feb 6 15:57:10 G4 kernel: WARNING: at net/sched/sch_generic.c:258
Feb 6 15:57:10 G4 kernel: Modules linked in: radeon ttm
drm_kms_helper drm hwmon power_supply ipv6 snd_pcm_oss snd_mixer_oss
snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device
snd_powermac snd_pcm snd_timer snd soundcore snd_page_alloc dm_mod
uninorth_agp sungem agpgart sungem_phy
Feb 6 15:57:10 G4 kernel: NIP: c03dceec LR: c03dceec CTR: 00000001
Feb 6 15:57:10 G4 kernel: REGS: effefe20 TRAP: 0700 Not tainted
(2.6.37-gentoo)
Feb 6 15:57:10 G4 kernel: MSR: 00029032<EE,ME,CE,IR,DR> CR:
44200084 XER: 20000000
Feb 6 15:57:10 G4 kernel: TASK = ef854cb0[0] 'swapper' THREAD: ef878000 CPU: 1
Feb 6 15:57:10 G4 kernel: GPR00: c03dceec effefed0 ef854cb0 0000003e
00001032 ffffffff c059f182 2074696d
Feb 6 15:57:10 G4 kernel: GPR08: 000069f7 effee000 01ea1000 00000004
ffffffff fff80b18 fff80154 00000000
Feb 6 15:57:10 G4 kernel: GPR16: 00000420 c03dcd4c c0589084 00200200
c04c9786 ef888814 ef888a14 ef888c14
Feb 6 15:57:10 G4 kernel: GPR24: 00000001 ffffffff ef12e7a0 00000002
00000001 00000000 ef8141d4 ef814000
Feb 6 15:57:10 G4 kernel: NIP [c03dceec] dev_watchdog+0x1a0/0x2e4
Feb 6 15:57:10 G4 kernel: LR [c03dceec] dev_watchdog+0x1a0/0x2e4
Feb 6 15:57:10 G4 kernel: Call Trace:
Feb 6 15:57:10 G4 kernel: [effefed0] [c03dceec]
dev_watchdog+0x1a0/0x2e4 (unreliable)
Feb 6 15:57:10 G4 kernel: [effeff40] [c0043db4] run_timer_softirq+0x1ac/0x260
Feb 6 15:57:10 G4 kernel: [effeffa0] [c003d9cc] __do_softirq+0x118/0x1ec
Feb 6 15:57:10 G4 kernel: [effefff0] [c0011398] call_do_softirq+0x14/0x24
Feb 6 15:57:10 G4 kernel: [ef879ea0] [c000687c] do_softirq+0x88/0xb4
Feb 6 15:57:10 G4 kernel: [ef879ec0] [c003d178] irq_exit+0x54/0x74
Feb 6 15:57:10 G4 kernel: [ef879ed0] [c000ead4] timer_interrupt+0x154/0x190
Feb 6 15:57:10 G4 kernel: [ef879ee0] [c0012080] ret_from_except+0x0/0x14
Feb 6 15:57:10 G4 kernel: --- Exception: 901 at cpu_idle+0xe0/0x180
Feb 6 15:57:10 G4 kernel: LR = cpu_idle+0xd4/0x180
Feb 6 15:57:10 G4 kernel: [ef879fa0] [c000a4f8] cpu_idle+0x170/0x180
(unreliable)
Feb 6 15:57:10 G4 kernel: [ef879fc0] [c044952c] start_secondary+0x314/0x350
Feb 6 15:57:10 G4 kernel: [ef879ff0] [00003270] 0x3270
Feb 6 15:57:10 G4 kernel: Instruction dump:
Feb 6 15:57:10 G4 kernel: 2f800001 41be003c 38810008 7fe3fb78
38a00040 4bfe77c9 7fa6eb78 7fe4fb78
Feb 6 15:57:10 G4 kernel: 7c651b78 3c60c050 3863ed12 48068721
<0fe00000> 38000001 3d20c05c 9809d3bc
Feb 6 15:57:10 G4 kernel: ---[ end trace 876ff0d47c88271d ]---
Feb 6 15:57:10 G4 kernel: gem 0002:20:0f.0: eth0: transmit timed out, resetting
Feb 6 15:57:10 G4 kernel: gem 0002:20:0f.0: eth0:
TX_STATE[00000001:00000000:00000001]
Feb 6 15:57:10 G4 kernel: gem 0002:20:0f.0: eth0:
RX_STATE[0609441d:00000001:00000001]
Feb 6 15:57:10 G4 kernel: gem 0002:20:0f.0: eth0: Link is up at 1000
Mbps, full-duplex
Feb 6 15:57:10 G4 kernel: gem 0002:20:0f.0: eth0: Pause is disabled
---
It seems that the Network dies and halt for ca. 25 seconds. After a
while it comes a call trace and the rsync session is dead. But not the
hole system dies.
Regards
RÃdi
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