2.6.35-rc4 ppc crash when loading radeon modeset=1

2.6.35-rc4 ppc crash when loading radeon modeset=1

[jjDaNiMoTh]

Hello to all.

Sorry if these aren't right place, please point me to the right
direction if you can :)

When trying new 2.6.35-rc4, our kernel team (ArchLinuxPPC) has tried
to setup KMS acceleration for radeon based machine.
We have removed radeonfb, and all others framebuffer driver, and added
fbcon and KMS enabled by default for radeon driver.

With a clean start, the screen freeze, when the control pass from
yaboot to kernel.

If we start with video=fbcon (or video=radeondrmfb), we could reach
the loading modules point, but after the loading of radeon, the screen
goes black, without any log information.

Loading kernel with video=fbcon radeon.modeset=0 allow us to reach the
end of init stage, and we could load X.org. In this case, acceleration
is disabled.

If we log out and do the following command:
modprobe -r radeon drm
modprobe drm debug=1
modprobe radeon modeset=1

The screen goes black, but at next boot we have found the logs. Any hint?

System information:

Xorg server: 1.8.1
xf86-video-ati 6.13.0
ati-dri 7.8.1
mesa 7.8.1
linux 2.6.35-rc4-00131-ge467e10

There are logs (most relevant part):
[...]
Jul 13 15:29:50 jim kernel: Caused by (from SRR1=149030): Transfer
error ack signal
Jul 13 15:29:50 jim kernel: Machine check in kernel mode.
Jul 13 15:29:50 jim kernel: Caused by (from SRR1=149030): Transfer
error ack signal
Jul 13 15:29:50 jim kernel: Machine check in kernel mode.
Jul 13 15:29:50 jim kernel: Caused by (from SRR1=149030): Transfer
error ack signal
Jul 13 15:29:50 jim kernel: Machine check in kernel mode.
Jul 13 15:29:50 jim kernel: Caused by (from SRR1=149030): Transfer
error ack signal
[....]
Jul 13 15:31:28 jim kernel: [drm] Module unloaded
Jul 13 15:31:39 jim kernel: [drm] Initialized drm 1.1.0 20060810
Jul 13 15:31:39 jim kernel: [drm] radeon kernel modesetting enabled.
Jul 13 15:31:39 jim kernel: [drm] initializing kernel modesetting
(RV350 0x1002:0x4E50).
Jul 13 15:31:39 jim kernel: [drm] register mmio base: 0xB0000000
Jul 13 15:31:39 jim kernel: [drm] register mmio size: 65536
Jul 13 15:31:39 jim kernel: [drm] Using generic clock info
Jul 13 15:31:39 jim kernel: agpgart-uninorth 0000:00:0b.0: putting AGP
V2 device into 4x mode
Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: putting AGP V2 device
into 4x mode
Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: GTT: 256M 0x00000000
- 0x0FFFFFFF
Jul 13 15:31:39 jim kernel: [drm] Generation 2 PCI interface, using
max accessible memory
Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: VRAM: 64M 0xB8000000
- 0xBBFFFFFF (64M used)
Jul 13 15:31:39 jim kernel: [drm] radeon: irq initialized.
Jul 13 15:31:39 jim kernel: [drm] Detected VRAM RAM=64M, BAR=128M
Jul 13 15:31:39 jim kernel: [drm] RAM width 128bits DDR
Jul 13 15:31:39 jim kernel: [TTM] Zone  kernel: Available graphics
memory: 384990 kiB.
Jul 13 15:31:39 jim kernel: [TTM] Zone highmem: Available graphics
memory: 516062 kiB.
Jul 13 15:31:39 jim kernel: [TTM] Initializing pool allocator.
Jul 13 15:31:39 jim kernel: [drm] radeon: 64M of VRAM memory ready
Jul 13 15:31:39 jim kernel: [drm] radeon: 256M of GTT memory ready.
Jul 13 15:31:39 jim kernel: [drm] radeon: 1 quad pipes, 1 Z pipes initialized.
Jul 13 15:31:39 jim kernel: [drm] Loading R300 Microcode
Jul 13 15:31:39 jim kernel: [drm] radeon: ring at 0x0000000000000000
Jul 13 15:31:39 jim kernel: [drm] ring test succeeded in 3 usecs
Jul 13 15:31:39 jim kernel: [drm] radeon: ib pool ready.
Jul 13 15:31:40 jim kernel: GPU lockup (waiting for 0x00000001 last
fence id 0x00000000)
Jul 13 15:31:40 jim kernel: NIP: f260fda4 LR: f260fda4 CTR: 00000001
Jul 13 15:31:40 jim kernel: REGS: ef3a3b90 TRAP: 0700   Not tainted
(2.6.35-rc4-NAT-00131-ge467e10)
Jul 13 15:31:40 jim kernel: MSR: 00029032 <EE,ME,CE,IR,DR>  CR:
22822484  XER: 20000000
Jul 13 15:31:40 jim kernel: TASK = eedb9ac0[2066] 'modprobe' THREAD: ef3a2000
Jul 13 15:31:40 jim kernel: GPR00: f260fda4 ef3a3c40 eedb9ac0 00000040
416d5d8c ffffffff c04db984 416d5d09
Jul 13 15:31:40 jim kernel: GPR08: 416d5d8c 00000001 00000000 0000000a
22822482 100238a8 00000000 00000000
Jul 13 15:31:40 jim kernel: GPR16: 00000000 0000007d c04a0000 f26a1d54
00000001 00000000 00000000 ef3a2000
Jul 13 15:31:40 jim kernel: GPR24: c005f328 ef3a3c54 00000000 eed386cc
ef3a3c48 00000000 eed38000 ef085d40
Jul 13 15:31:40 jim kernel: NIP [f260fda4]
radeon_fence_wait+0x28c/0x2f4 [radeon]
Jul 13 15:31:40 jim kernel: LR [f260fda4] radeon_fence_wait+0x28c/0x2f4 [radeon]
Jul 13 15:31:40 jim kernel: Call Trace:
Jul 13 15:31:40 jim kernel: [ef3a3c40] [f260fda4]
radeon_fence_wait+0x28c/0x2f4 [radeon] (unreliable)
Jul 13 15:31:40 jim kernel: [ef3a3cb0] [f2638234]
r100_ib_test+0x158/0x280 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3ce0] [f26383a4]
r100_ib_init+0x28/0xc8 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3cf0] [f263f65c]
r300_startup+0xd4/0x1e4 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3d00] [f263fb3c] r300_init+0x150/0x334 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3d10] [f25fc514]
radeon_device_init+0x2b0/0x418 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3d30] [f25fdc0c]
radeon_driver_load_kms+0xa4/0x1f4 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3d60] [f2444c4c] drm_get_dev+0x284/0x43c [drm]
Jul 13 15:31:40 jim kernel: [ef3a3d90] [f268d75c]
radeon_pci_probe+0x18/0x28 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3da0] [c01f6f20] pci_device_probe+0x80/0xa4
Jul 13 15:31:40 jim kernel: [ef3a3dc0] [c025cf2c] driver_probe_device+0xc0/0x208
Jul 13 15:31:40 jim kernel: [ef3a3de0] [c025d130] __driver_attach+0xbc/0xc0
Jul 13 15:31:40 jim kernel: [ef3a3e00] [c025bd28] bus_for_each_dev+0x64/0xa0
Jul 13 15:31:40 jim kernel: [ef3a3e30] [c025cb58] driver_attach+0x24/0x34
Jul 13 15:31:40 jim kernel: [ef3a3e40] [c025c618] bus_add_driver+0xd8/0x308
Jul 13 15:31:40 jim kernel: [ef3a3e70] [c025d418] driver_register+0x88/0x154
Jul 13 15:31:40 jim kernel: [ef3a3e90] [c01f7200]
__pci_register_driver+0x4c/0xdc
Jul 13 15:31:40 jim kernel: [ef3a3eb0] [f243ee50] drm_init+0x120/0x134 [drm]
Jul 13 15:31:40 jim kernel: [ef3a3ed0] [f26c00e4]
radeon_init+0xe4/0x128 [radeon]
Jul 13 15:31:40 jim kernel: [ef3a3ef0] [c0003ff4] do_one_initcall+0x3c/0x1d8
Jul 13 15:31:40 jim kernel: [ef3a3f20] [c007b434] sys_init_module+0xdc/0x1e0
Jul 13 15:31:40 jim kernel: [ef3a3f40] [c0017f84] ret_from_syscall+0x0/0x40
Jul 13 15:31:40 jim kernel: --- Exception: c01 at 0xff62b58
Jul 13 15:31:40 jim kernel: LR = 0x10002c7c
Jul 13 15:31:40 jim kernel: Instruction dump:
Jul 13 15:31:40 jim kernel: 4bffffc4 813e0a18 7fc3f378 80090014
7c0903a6 4e800421 2f830000 419eff78
Jul 13 15:31:40 jim kernel: 809f0010 7e639b78 7ec5b378 4807dc59
<0fe00000> 9a9e16a8 7fc3f378 4bfecd41
Jul 13 15:31:40 jim kernel: radeon 0000:00:10.0: GPU reset succeed
Jul 13 15:31:40 jim kernel: [drm] radeon: 1 quad pipes, 1 Z pipes initialized.
Jul 13 15:31:40 jim kernel: [drm] radeon: ring at 0x0000000000000000
Jul 13 15:31:41 jim kernel: Oops: Kernel access of bad area, sig: 11 [#1]
Jul 13 15:31:41 jim kernel: PREEMPT PowerMac
Jul 13 15:31:41 jim kernel: Modules linked in: radeon(+) ttm
drm_kms_helper drm i2c_algo_bit hid_apple appletouch usbhid arc4 ecb
b43 mac80211 cfg80211 ohci_hcd snd_seq_oss snd_seq_midi_event snd_seq
snd_seq_device therm_adt746x snd_pcm_oss snd_aoa_codec_tas
snd_mixer_oss snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_pcm
snd_timer snd_page_alloc snd ehci_hcd ohci1394 ssb ams input_polldev
yenta_socket soundcore pcmcia usbcore ide_cd_mod pcmcia_rsrc ieee1394
cpufreq_userspace snd_aoa_soundbus i2c_powermac pcmcia_core evdev
cdrom uninorth_agp sungem sungem_phy [last unloaded: i2c_algo_bit]
Jul 13 15:31:41 jim kernel: NIP: f2482248 LR: f25fcb88 CTR: 00000000
Jul 13 15:31:41 jim kernel: REGS: ef3a3b50 TRAP: 0300   Tainted: G
   W    (2.6.35-rc4-NAT-00131-ge467e10)
Jul 13 15:31:41 jim kernel: MSR: 00009032 <EE,ME,IR,DR>  CR: 22822484
XER: 20000000
Jul 13 15:31:41 jim kernel: DAR: 00000000, DSISR: 40000000
Jul 13 15:31:41 jim kernel: TASK = eedb9ac0[2066] 'modprobe' THREAD: ef3a2000
Jul 13 15:31:41 jim kernel: GPR00: f25fcb88 ef3a3c00 eedb9ac0 ef2c8c00
416d67bb ffffffff c04db97e 416d66f1
Jul 13 15:31:41 jim kernel: GPR08: 416d67bb 00000030 f28e002c eed39670
22822482 100238a8 00000000 00000000
Jul 13 15:31:41 jim kernel: GPR16: 00000000 0000007d c04a0000 f26a1d54
00000001 00000000 00000000 ef3a2000
Jul 13 15:31:41 jim kernel: GPR24: c005f328 ef3a3c54 f2484054 f2483878
ef2c8c00 ef2c8ea4 ef2c8e98 fffffffc
Jul 13 15:31:41 jim kernel: NIP [f2482248]
drm_helper_resume_force_mode+0x38/0x16c [drm_kms_helper]
Jul 13 15:31:41 jim kernel: LR [f25fcb88] radeon_gpu_reset+0x98/0x104 [radeon]
Jul 13 15:31:41 jim kernel: Call Trace:
Jul 13 15:31:41 jim kernel: [ef3a3c00] [ffffffea] 0xffffffea (unreliable)
Jul 13 15:31:41 jim kernel: [ef3a3c30] [f25fcb88]
radeon_gpu_reset+0x98/0x104 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3c40] [f260fdb4]
radeon_fence_wait+0x29c/0x2f4 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3cb0] [f2638234]
r100_ib_test+0x158/0x280 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3ce0] [f26383a4]
r100_ib_init+0x28/0xc8 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3cf0] [f263f65c]
r300_startup+0xd4/0x1e4 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3d00] [f263fb3c] r300_init+0x150/0x334 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3d10] [f25fc514]
radeon_device_init+0x2b0/0x418 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3d30] [f25fdc0c]
radeon_driver_load_kms+0xa4/0x1f4 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3d60] [f2444c4c] drm_get_dev+0x284/0x43c [drm]
Jul 13 15:31:41 jim kernel: [ef3a3d90] [f268d75c]
radeon_pci_probe+0x18/0x28 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3da0] [c01f6f20] pci_device_probe+0x80/0xa4
Jul 13 15:31:41 jim kernel: [ef3a3dc0] [c025cf2c] driver_probe_device+0xc0/0x208
Jul 13 15:31:41 jim kernel: [ef3a3de0] [c025d130] __driver_attach+0xbc/0xc0
Jul 13 15:31:41 jim kernel: [ef3a3e00] [c025bd28] bus_for_each_dev+0x64/0xa0
Jul 13 15:31:41 jim kernel: [ef3a3e30] [c025cb58] driver_attach+0x24/0x34
Jul 13 15:31:41 jim kernel: [ef3a3e40] [c025c618] bus_add_driver+0xd8/0x308
Jul 13 15:31:41 jim kernel: [ef3a3e70] [c025d418] driver_register+0x88/0x154
Jul 13 15:31:41 jim kernel: [ef3a3e90] [c01f7200]
__pci_register_driver+0x4c/0xdc
Jul 13 15:31:41 jim kernel: [ef3a3eb0] [f243ee50] drm_init+0x120/0x134 [drm]
Jul 13 15:31:41 jim kernel: [ef3a3ed0] [f26c00e4]
radeon_init+0xe4/0x128 [radeon]
Jul 13 15:31:41 jim kernel: [ef3a3ef0] [c0003ff4] do_one_initcall+0x3c/0x1d8
Jul 13 15:31:41 jim kernel: [ef3a3f20] [c007b434] sys_init_module+0xdc/0x1e0
Jul 13 15:31:41 jim kernel: [ef3a3f40] [c0017f84] ret_from_syscall+0x0/0x40
Jul 13 15:31:41 jim kernel: --- Exception: c01 at 0xff62b58
Jul 13 15:31:41 jim kernel: LR = 0x10002c7c
Jul 13 15:31:41 jim kernel: Instruction dump:
Jul 13 15:31:41 jim kernel: bf010010 7c7d1b78 3f60f248 90010034
3f40f248 3b7b382c 7c7c1b78 3bc30298
Jul 13 15:31:41 jim kernel: 3b5a4054 3b7b004c 87fd02a4 3bfffffc
<813f0004> 2f890000 419e0008 7c004a2c
Jul 13 15:31:41 jim kernel: ---[ end trace 9928f19443a4dfb8 ]---
Jul 13 15:31:48 jim kernel: Oops: Kernel access of bad area, sig: 11 [#2]
Jul 13 15:31:48 jim kernel: PREEMPT PowerMac
Jul 13 15:31:48 jim kernel: Modules linked in: radeon(+) ttm
drm_kms_helper drm i2c_algo_bit hid_apple appletouch usbhid arc4 ecb
b43 mac80211 cfg80211 ohci_hcd snd_seq_oss snd_seq_midi_event snd_seq
snd_seq_device therm_adt746x snd_pcm_oss snd_aoa_codec_tas
snd_mixer_oss snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_pcm
snd_timer snd_page_alloc snd ehci_hcd ohci1394 ssb ams input_polldev
yenta_socket soundcore pcmcia usbcore ide_cd_mod pcmcia_rsrc ieee1394
cpufreq_userspace snd_aoa_soundbus i2c_powermac pcmcia_core evdev
cdrom uninorth_agp sungem sungem_phy [last unloaded: i2c_algo_bit]
Jul 13 15:31:48 jim kernel: NIP: c0382df4 LR: c0382de0 CTR: 00000000
Jul 13 15:31:48 jim kernel: REGS: eed7dd80 TRAP: 0300   Tainted: G
 D W    (2.6.35-rc4-NAT-00131-ge467e10)
Jul 13 15:31:48 jim kernel: MSR: 00001032 <ME,IR,DR>  CR: 24000424
XER: 20000000
Jul 13 15:31:48 jim kernel: DAR: 00000000, DSISR: 42000000
Jul 13 15:31:48 jim kernel: TASK = efb46820[2095] 'X' THREAD: eed7c000
Jul 13 15:31:48 jim kernel: GPR00: ffffffff eed7de30 efb46820 ef2c8e3c
eed7de38 eed7c000 eed7de44 0000082f
Jul 13 15:31:48 jim kernel: GPR08: 0000e200 00000000 0000007f c0382fc8
24000422 101d3ea8 101cbed4 00000000
Jul 13 15:31:48 jim kernel: GPR16: 10478758 00000000 00000001 101d3c0c
00000000 101cb8c8 ef2c8c00 00009032
Jul 13 15:31:48 jim kernel: GPR24: ef2c8dc0 ef2c8e40 eed7de38 efb46820
c04d0000 00009032 eed7c000 ef2c8e3c
Jul 13 15:31:48 jim kernel: NIP [c0382df4] __mutex_lock_slowpath+0xa0/0x274
Jul 13 15:31:48 jim kernel: LR [c0382de0] __mutex_lock_slowpath+0x8c/0x274
Jul 13 15:31:48 jim kernel: Call Trace:
Jul 13 15:31:48 jim kernel: [eed7de30] [c0382dd0]
__mutex_lock_slowpath+0x7c/0x274 (unreliable)
Jul 13 15:31:48 jim kernel: [eed7de70] [c0382fe0] mutex_lock+0x18/0x34
Jul 13 15:31:48 jim kernel: [eed7de80] [f244d010] drm_fb_release+0x28/0xac [drm]
Jul 13 15:31:48 jim kernel: [eed7dea0] [f243fab8] drm_release+0x674/0x770 [drm]
Jul 13 15:31:48 jim kernel: [eed7dee0] [c00fc410] fput+0x118/0x264
Jul 13 15:31:48 jim kernel: [eed7df00] [c00f87d0] filp_close+0x6c/0x98
Jul 13 15:31:48 jim kernel: [eed7df20] [c00f88ac] sys_close+0xb0/0x12c
Jul 13 15:31:48 jim kernel: [eed7df40] [c0017f84] ret_from_syscall+0x0/0x40
Jul 13 15:31:48 jim kernel: --- Exception: c01 at 0xfec3730
Jul 13 15:31:48 jim kernel: LR = 0xf8b9340
Jul 13 15:31:48 jim kernel: Instruction dump:
Jul 13 15:31:48 jim kernel: 7f44d378 3b3f0004 4bcee849 80bb0004
7fe3fb78 7f44d378 4bcee9e5 813f0008
Jul 13 15:31:48 jim kernel: 3800ffff 93210008 935f0008 9121000c
<93490000> 93610010 7d20f828 7c00f92d
Jul 13 15:31:48 jim kernel: ---[ end trace 9928f19443a4dfb9 ]---
Jul 13 15:31:48 jim kernel: note: X[2095] exited with preempt_count 2
Jul 13 15:31:48 jim kernel: Modules linked in: radeon(+) ttm
drm_kms_helper drm i2c_algo_bit hid_apple appletouch usbhid arc4 ecb
b43 mac80211 cfg80211 ohci_hcd snd_seq_oss snd_seq_midi_event snd_seq
snd_seq_device therm_adt746x snd_pcm_oss snd_aoa_codec_tas
snd_mixer_oss snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_pcm
snd_timer snd_page_alloc snd ehci_hcd ohci1394 ssb ams input_polldev
yenta_socket soundcore pcmcia usbcore ide_cd_mod pcmcia_rsrc ieee1394
cpufreq_userspace snd_aoa_soundbus i2c_powermac pcmcia_core evdev
cdrom uninorth_agp sungem sungem_phy [last unloaded: i2c_algo_bit]
Jul 13 15:31:48 jim kernel: Call Trace:
Jul 13 15:31:48 jim kernel: [eed7da50] [c000a6e8]
show_stack+0x50/0x158 (unreliable)
Jul 13 15:31:48 jim kernel: [eed7da90] [c00369bc] __schedule_bug+0x64/0x68
Jul 13 15:31:48 jim kernel: [eed7daa0] [c03816a0] schedule+0x360/0x428
Jul 13 15:31:48 jim kernel: [eed7dae0] [c0382068] schedule_timeout+0x1c0/0x304
Jul 13 15:31:48 jim kernel: [eed7db30] [c0381b7c] wait_for_common+0xd4/0x1c8
Jul 13 15:31:48 jim kernel: [eed7db70] [c005a0b8] flush_cpu_workqueue+0xdc/0x110
Jul 13 15:31:48 jim kernel: [eed7dbb0] [c022fc7c] tty_ldisc_release+0x2c/0x84
Jul 13 15:31:48 jim kernel: [eed7dbd0] [c0228374] tty_release+0x428/0x5b0
Jul 13 15:31:48 jim kernel: [eed7dc70] [c00fc410] fput+0x118/0x264
Jul 13 15:31:48 jim kernel: [eed7dc90] [c00f87d0] filp_close+0x6c/0x98
Jul 13 15:31:48 jim kernel: [eed7dcb0] [c0042958] put_files_struct+0x12c/0x158
Jul 13 15:31:48 jim kernel: [eed7dce0] [c0042b7c] do_exit+0x118/0x708
Jul 13 15:31:48 jim kernel: [eed7dd30] [c0015560] die+0x100/0x2c0
Jul 13 15:31:48 jim kernel: [eed7dd60] [c001f350] bad_page_fault+0x90/0xc8
Jul 13 15:31:48 jim kernel: [eed7dd70] [c001843c] handle_page_fault+0x7c/0x80
Jul 13 15:31:48 jim kernel: --- Exception: 300 at
__mutex_lock_slowpath+0xa0/0x274
Jul 13 15:31:48 jim kernel: LR = __mutex_lock_slowpath+0x8c/0x274
Jul 13 15:31:48 jim kernel: [eed7de30] [c0382dd0]
__mutex_lock_slowpath+0x7c/0x274 (unreliable)
Jul 13 15:31:48 jim kernel: [eed7de70] [c0382fe0] mutex_lock+0x18/0x34
Jul 13 15:31:48 jim kernel: [eed7de80] [f244d010] drm_fb_release+0x28/0xac [drm]
Jul 13 15:31:48 jim kernel: [eed7dea0] [f243fab8] drm_release+0x674/0x770 [drm]
Jul 13 15:31:48 jim kernel: [eed7dee0] [c00fc410] fput+0x118/0x264
Jul 13 15:31:48 jim kernel: [eed7df00] [c00f87d0] filp_close+0x6c/0x98
Jul 13 15:31:48 jim kernel: [eed7df20] [c00f88ac] sys_close+0xb0/0x12c
Jul 13 15:31:48 jim kernel: [eed7df40] [c0017f84] ret_from_syscall+0x0/0x40
Jul 13 15:31:48 jim kernel: --- Exception: c01 at 0xfec3730
Jul 13 15:31:48 jim kernel: LR = 0xf8b9340
Jul 13 15:33:09 jim kernel: Using PowerMac machine description
[Next boot..]


Many thanks

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[Michel Dänzer]

On Die, 2010-07-13 at 16:03 +0200, jjDaNiMoTh wrote:=20
>=20
> When trying new 2.6.35-rc4, our kernel team (ArchLinuxPPC) has tried
> to setup KMS acceleration for radeon based machine.
> We have removed radeonfb, and all others framebuffer driver, and added
> fbcon and KMS enabled by default for radeon driver.
>=20
> With a clean start, the screen freeze, when the control pass from
> yaboot to kernel.
>=20
> If we start with video=3Dfbcon (or video=3Dradeondrmfb), we could reach
> the loading modules point, [...]

Which framebuffer device (if any) is it trying to initialize otherwise?
OFfb? The first paragraph above implies none, but then I'm not sure why
the video=3D parameters would make any difference.


> Jul 13 15:31:39 jim kernel: [drm] Initialized drm 1.1.0 20060810
> Jul 13 15:31:39 jim kernel: [drm] radeon kernel modesetting enabled.
> Jul 13 15:31:39 jim kernel: [drm] initializing kernel modesetting
> (RV350 0x1002:0x4E50).
> Jul 13 15:31:39 jim kernel: [drm] register mmio base: 0xB0000000
> Jul 13 15:31:39 jim kernel: [drm] register mmio size: 65536
> Jul 13 15:31:39 jim kernel: [drm] Using generic clock info
> Jul 13 15:31:39 jim kernel: agpgart-uninorth 0000:00:0b.0: putting AGP
> V2 device into 4x mode
> Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: putting AGP V2 device
> into 4x mode
> Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: GTT: 256M 0x00000000
> - 0x0FFFFFFF
> Jul 13 15:31:39 jim kernel: [drm] Generation 2 PCI interface, using
> max accessible memory
> Jul 13 15:31:39 jim kernel: radeon 0000:00:10.0: VRAM: 64M 0xB8000000
> - 0xBBFFFFFF (64M used)
> Jul 13 15:31:39 jim kernel: [drm] radeon: irq initialized.
> Jul 13 15:31:39 jim kernel: [drm] Detected VRAM RAM=3D64M, BAR=3D128M
> Jul 13 15:31:39 jim kernel: [drm] RAM width 128bits DDR
> Jul 13 15:31:39 jim kernel: [TTM] Zone  kernel: Available graphics
> memory: 384990 kiB.
> Jul 13 15:31:39 jim kernel: [TTM] Zone highmem: Available graphics
> memory: 516062 kiB.
> Jul 13 15:31:39 jim kernel: [TTM] Initializing pool allocator.
> Jul 13 15:31:39 jim kernel: [drm] radeon: 64M of VRAM memory ready
> Jul 13 15:31:39 jim kernel: [drm] radeon: 256M of GTT memory ready.
> Jul 13 15:31:39 jim kernel: [drm] radeon: 1 quad pipes, 1 Z pipes initial=
ized.
> Jul 13 15:31:39 jim kernel: [drm] Loading R300 Microcode
> Jul 13 15:31:39 jim kernel: [drm] radeon: ring at 0x0000000000000000
> Jul 13 15:31:39 jim kernel: [drm] ring test succeeded in 3 usecs
> Jul 13 15:31:39 jim kernel: [drm] radeon: ib pool ready.

So far, so good.

> Jul 13 15:31:40 jim kernel: GPU lockup (waiting for 0x00000001 last
> fence id 0x00000000)

The GPU locks up, and things go downhill from there...

Does KMS work better with radeon.agpmode=3D1 (or 2 or -1)?


--=20
Earthling Michel D=C3=A4nzer           |                http://www.vmware.c=
om
Libre software enthusiast         |          Debian, X and DRI developer

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[jjDaNiMoTh]

2010/7/13 Michel D=C3=A4nzer <michel@daenzer.net>:
[cut]
> Which framebuffer device (if any) is it trying to initialize otherwise?
> OFfb? The first paragraph above implies none, but then I'm not sure why
> the video=3D parameters would make any difference.
We tried and with 2.6.35-rc4 we could boot without video=3D. First good new=
s :)

[cut]
> Does KMS work better with radeon.agpmode=3D1 (or 2 or -1)?

with radeon.agpmode=3D-1, we could start X server (no black screen),
with both radeon.modeset=3D{0,1}. In all cases, Xorg works fine, except
when we try to load an OpenGL application (like glxgears), Xorg
freeze, we could move only the mouse, we couldn't switch to a backup
console. Same situations with glxgears in both modeset=3D0 and =3D1. In
the log (Xorg.0.log) we have found:

[.. other xorg log, no EE only WW]
[    65.238] (II) RADEON(0): Panel infos found from DDC detailed: 1280x854
[    65.238] (II) RADEON(0): EDID vendor "APP", prod id 39968
[    65.249] (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
[    65.249] Unhandled monitor type 0
[    65.249] (II) RADEON(0): Output: S-video, Detected Monitor Type: 0
[   137.813] [mi] EQ overflowing. The server is probably stuck in an
infinite loop.
[   137.813]
Backtrace:
[   137.814] 0: /usr/bin/X (xorg_backtrace+0x58) [0x100582cc]
[   137.814] 1: /usr/bin/X (mieqEnqueue+0x1c8) [0x1004e5d8]
[   137.814] 2: /usr/bin/X (xf86PostButtonEventP+0xf4) [0x10061be8]
[   137.814] 3: /usr/bin/X (xf86PostButtonEvent+0xb4) [0x10061d2c]
[   137.814] 4: /usr/lib/xorg/modules/input/evdev_drv.so
(0xf380000+0x3d88) [0xf383d88]
[   137.814] 5: /usr/bin/X (0x10000000+0x68784) [0x10068784]
[   137.814] 6: /usr/bin/X (0x10000000+0x11a7e4) [0x1011a7e4]
[   137.814] 7: (vdso) (__kernel_sigtramp32+0x0) [0x100344]
[   137.814] 8: /usr/lib/xorg/modules/dri/r300_dri.so
(0xf3f5000+0x48534) [0xf43d534]
[   137.814] 9: /usr/lib/libdrm.so.2 (drmIoctl+0x40) [0xf8b8f64]
[   137.814] 10: /usr/lib/libdrm.so.2 (drmCommandWrite+0x24) [0xf8bbe60]
[   137.814] 11: /usr/lib/xorg/modules/dri/r300_dri.so
(0xf3f5000+0x46944) [0xf43b944]
[   137.814] 12: /usr/lib/xorg/modules/dri/r300_dri.so
(0xf3f5000+0x64d8c) [0xf459d8c]
[   137.814] 13: /usr/lib/xorg/modules/extensions/libglx.so
(0xf930000+0x40f78) [0xf970f78]
[   137.814] 14: /usr/lib/xorg/modules/extensions/libglx.so
(0xf930000+0x44be4) [0xf974be4]
[   137.814] 15: /usr/bin/X (0x10000000+0x34a24) [0x10034a24]
[   137.815] 16: /usr/bin/X (0x10000000+0x18bc4) [0x10018bc4]
[   137.815] 17: /lib/libc.so.6 (0xfb39000+0x1f544) [0xfb58544]
[   137.815] 18: /lib/libc.so.6 (0xfb39000+0x1f6d0) [0xfb586d0]

Do we need to compile mesa, ati-dri, x.org and xf86-video-ati from git?

Many thanks

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[Michel Dänzer]

On Die, 2010-07-13 at 16:51 +0200, jjDaNiMoTh wrote:=20
> 2010/7/13 Michel D=C3=A4nzer <michel@daenzer.net>:
> > Does KMS work better with radeon.agpmode=3D1 (or 2 or -1)?
>=20
> with radeon.agpmode=3D-1, we could start X server (no black screen),
> with both radeon.modeset=3D{0,1}.

Note that radeon.agpmode is only effective with radeon.modeset=3D1,
otherwise you need to use Option "AGPMode" in xorg.conf (and vice
versa).


> In all cases, Xorg works fine, except when we try to load an OpenGL
> application (like glxgears), Xorg freeze, we could move only the
> mouse, we couldn't switch to a backup console.

Could be a GPU lockup again, possibly due to still using AGP 4x with
modeset=3D0.


> Same situations with glxgears in both modeset=3D0 and =3D1. In the log
> (Xorg.0.log) we have found:=20
>=20
> [.. other xorg log, no EE only WW]
> [    65.238] (II) RADEON(0): Panel infos found from DDC detailed: 1280x85=
4
> [    65.238] (II) RADEON(0): EDID vendor "APP", prod id 39968
> [    65.249] (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
> [    65.249] Unhandled monitor type 0
> [    65.249] (II) RADEON(0): Output: S-video, Detected Monitor Type: 0
> [   137.813] [mi] EQ overflowing. The server is probably stuck in an
> infinite loop.
> [   137.813]
> Backtrace:
> [   137.814] 0: /usr/bin/X (xorg_backtrace+0x58) [0x100582cc]
> [   137.814] 1: /usr/bin/X (mieqEnqueue+0x1c8) [0x1004e5d8]
> [   137.814] 2: /usr/bin/X (xf86PostButtonEventP+0xf4) [0x10061be8]
> [   137.814] 3: /usr/bin/X (xf86PostButtonEvent+0xb4) [0x10061d2c]
> [   137.814] 4: /usr/lib/xorg/modules/input/evdev_drv.so
> (0xf380000+0x3d88) [0xf383d88]
> [   137.814] 5: /usr/bin/X (0x10000000+0x68784) [0x10068784]
> [   137.814] 6: /usr/bin/X (0x10000000+0x11a7e4) [0x1011a7e4]
> [   137.814] 7: (vdso) (__kernel_sigtramp32+0x0) [0x100344]
> [   137.814] 8: /usr/lib/xorg/modules/dri/r300_dri.so
> (0xf3f5000+0x48534) [0xf43d534]
> [   137.814] 9: /usr/lib/libdrm.so.2 (drmIoctl+0x40) [0xf8b8f64]
> [   137.814] 10: /usr/lib/libdrm.so.2 (drmCommandWrite+0x24) [0xf8bbe60]
> [   137.814] 11: /usr/lib/xorg/modules/dri/r300_dri.so
> (0xf3f5000+0x46944) [0xf43b944]
> [   137.814] 12: /usr/lib/xorg/modules/dri/r300_dri.so
> (0xf3f5000+0x64d8c) [0xf459d8c]
> [   137.814] 13: /usr/lib/xorg/modules/extensions/libglx.so
> (0xf930000+0x40f78) [0xf970f78]
> [   137.814] 14: /usr/lib/xorg/modules/extensions/libglx.so
> (0xf930000+0x44be4) [0xf974be4]
> [   137.814] 15: /usr/bin/X (0x10000000+0x34a24) [0x10034a24]
> [   137.815] 16: /usr/bin/X (0x10000000+0x18bc4) [0x10018bc4]
> [   137.815] 17: /lib/libc.so.6 (0xfb39000+0x1f544) [0xfb58544]
> [   137.815] 18: /lib/libc.so.6 (0xfb39000+0x1f6d0) [0xfb586d0]

What does the log file contain with modeset=3D1?


> Do we need to compile mesa, ati-dri, x.org and xf86-video-ati from git?

Shouldn't be necessary.


--=20
Earthling Michel D=C3=A4nzer           |                http://www.vmware.c=
om
Libre software enthusiast         |          Debian, X and DRI developer

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[jjDaNiMoTh]

2010/7/13 Michel D=C3=A4nzer <michel@daenzer.net>:
[cut]
> Could be a GPU lockup again, possibly due to still using AGP 4x with
> modeset=3D0.
[cut]
> What does the log file contain with modeset=3D1?

We have no message, after the X.org freeze.

messages.log:
[...]
Jul 13 17:11:01 jim kernel: [drm] Num pipes: 1
Jul 13 17:13:39 jim kernel: Using PowerMac machine description

(we have rebooted)

In Xorg.0.log there aren't information after the crash, only a right startu=
p.

Maybe I could try to connect via ssh and see if there are some
informations which aren't written to disk...

At this time, I think it isn't a kernel problem, am I right? Also, we
have the same problem (freeze in glxgears or other program using glx)
both from normal user and from root.

Thank you again

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[Michel Dänzer]

On Die, 2010-07-13 at 18:02 +0200, jjDaNiMoTh wrote:=20
> 2010/7/13 Michel D=C3=A4nzer <michel@daenzer.net>:
> > What does the log file contain with modeset=3D1?
>=20
> We have no message, after the X.org freeze.
>=20
> messages.log:
> [...]
> Jul 13 17:11:01 jim kernel: [drm] Num pipes: 1
> Jul 13 17:13:39 jim kernel: Using PowerMac machine description
>=20
> (we have rebooted)
>=20
> In Xorg.0.log there aren't information after the crash, only a right star=
tup.

Are you looking at the right log file, not the one from the new X server
after the reboot?

Maybe you could post the full dmesg, Xorg.0.log and X server stderr
output (should be captured in the gdm/kdm log file) from trying with
modeset=3D1.


> At this time, I think it isn't a kernel problem, am I right?

With modeset=3D1 it most likely is a kernel (configuration) problem.


--=20
Earthling Michel D=C3=A4nzer           |                http://www.vmware.c=
om
Libre software enthusiast         |          Debian, X and DRI developer

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[jjDaNiMoTh]

2010/7/13 Michel D=C3=A4nzer <michel@daenzer.net>:
[cut]
> Are you looking at the right log file, not the one from the new X server
> after the reboot?
Yes, I looked to .old, when referring to Xorg.0.log.

> Maybe you could post the full dmesg, Xorg.0.log and X server stderr
> output (should be captured in the gdm/kdm log file) from trying with
> modeset=3D1.
>
>> At this time, I think it isn't a kernel problem, am I right?
>
> With modeset=3D1 it most likely is a kernel (configuration) problem.

So, I've now the acceleration. The main problem was radeon.agpmode,
setting it to -1 (and removing all files in xorg.conf.d related to
radeon) fixes all issue (also the freeze on glxgears). Now I have
~1500 FPS, and I'm fine with it (before I got 100 FPS).

I get the acceleration also with a non-KMS capable kernel, so I think
we got the point. I will add the option to modprobe.conf for archPPC.

I tried a program which use a lot opengl, the only thing I see is
ERROR: GL error 1282
ERROR: Ignoring 1 openGL errors

but the topic-error is fixed.

Thank you.

Re: 2.6.35-rc4 ppc crash when loading radeon modeset=1

[Michel Dänzer]

On Die, 2010-07-13 at 19:05 +0200, jjDaNiMoTh wrote:=20
>=20
> So, I've now the acceleration. The main problem was radeon.agpmode,
> setting it to -1 (and removing all files in xorg.conf.d related to
> radeon) fixes all issue (also the freeze on glxgears). Now I have
> ~1500 FPS, and I'm fine with it (before I got 100 FPS).
>=20
> I get the acceleration also with a non-KMS capable kernel, so I think
> we got the point. I will add the option to modprobe.conf for archPPC.

Note that e.g. on my PowerBook agpmode=3D1 works (mostly) stable, and if
AGP works it performs significantly better than PCI.


> I tried a program which use a lot opengl, the only thing I see is
> ERROR: GL error 1282
> ERROR: Ignoring 1 openGL errors

Something the app does causes Mesa to raise a GL_INVALID_OPERATION
error. This may be a bug in the app or in Mesa.


--=20
Earthling Michel D=C3=A4nzer           |                http://www.vmware.c=
om
Libre software enthusiast         |          Debian, X and DRI developer