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<div class="moz-cite-prefix">On 2/23/2015 1:43 PM, Julian Margetson
wrote:<br>
</div>
<blockquote cite="mid:54EB66C5.2070801@candw.ms" type="cite">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<div class="moz-cite-prefix">On 2/23/2015 9:03 AM, Julian
Margetson wrote:<br>
</div>
<blockquote cite="mid:54EB253F.9020704@candw.ms" type="cite">
<meta content="text/html; charset=utf-8"
http-equiv="Content-Type">
<div class="moz-cite-prefix">On 2/18/2015 10:56 PM, Michael
Ellerman wrote:<br>
</div>
<blockquote cite="mid:1424314594.22408.1.camel@ellerman.id.au"
type="cite">
<pre wrap="">On Wed, 2015-02-18 at 21:36 -0400, Julian Margetson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On 2/18/2015 8:13 PM, Michael Ellerman wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On Wed, 2015-02-18 at 15:45 -0400, Julian Margetson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On 2/15/2015 8:18 PM, Michael Ellerman wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On Sun, 2015-02-15 at 08:16 -0400, Julian Margetson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi
I am unable to get any kernel beyond the 3.16 branch working on an
Acube Sam460ex
AMCC 460ex based motherboard. Kernel up 3.16.7-ckt6 working.
</pre>
</blockquote>
<pre wrap="">Does reverting b0345bbc6d09 change anything?
</pre>
<blockquote type="cite">
<pre wrap="">[ 6.364350] snd_hda_intel 0001:81:00.1: enabling device (0000 -> 0002)
[ 6.453794] snd_hda_intel 0001:81:00.1: ppc4xx_setup_msi_irqs: fail mapping irq
[ 6.487530] Unable to handle kernel paging request for data at address 0x0fa06c7c
[ 6.495055] Faulting instruction address: 0xc032202c
[ 6.500033] Vector: 300 (Data Access) at [efa31cf0]
[ 6.504922] pc: c032202c: __reg_op+0xe8/0x100
[ 6.509697] lr: c0014f88: msi_bitmap_free_hwirqs+0x50/0x94
[ 6.515600] sp: efa31da0
[ 6.518491] msr: 21000
[ 6.521112] dar: fa06c7c
[ 6.523915] dsisr: 0
[ 6.526190] current = 0xef8bab00
[ 6.529603] pid = 115, comm = kworker/0:1
[ 6.534163] enter ? for help
[ 6.537054] [link register ] c0014f88 msi_bitmap_free_hwirqs+0x50/0x94
[ 6.543811] [efa31da0] c0014f78 msi_bitmap_free_hwirqs+0x40/0x94 (unreliable)
[ 6.551001] [efa31dc0] c001aee8 ppc4xx_setup_msi_irqs+0xac/0xf4
[ 6.556973] [efa31e00] c03503a4 pci_enable_msi_range+0x1e0/0x280
[ 6.563032] [efa31e40] f92c2f74 azx_probe_work+0xe0/0x57c [snd_hda_intel]
[ 6.569906] [efa31e80] c0036344 process_one_work+0x1e8/0x2f0
[ 6.575627] [efa31eb0] c003677c worker_thread+0x2f4/0x438
[ 6.581079] [efa31ef0] c003a3e4 kthread+0xc8/0xcc
[ 6.585844] [efa31f40] c000aec4 ret_from_kernel_thread+0x5c/0x64
[ 6.591910] mon> <no input ...>
</pre>
</blockquote>
</blockquote>
<pre wrap="">Managed to do a third git bisect with the following results .
</pre>
</blockquote>
<pre wrap="">Great work.
</pre>
<blockquote type="cite">
<pre wrap="">git bisect bad
9279d3286e10736766edcaf815ae10e00856e448 is the first bad commit
commit 9279d3286e10736766edcaf815ae10e00856e448
Author: Rasmus Villemoes <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:linux@rasmusvillemoes.dk"><linux@rasmusvillemoes.dk></a>
Date: Wed Aug 6 16:10:16 2014 -0700
lib: bitmap: change parameter of bitmap_*_region to unsigned
</pre>
</blockquote>
<pre wrap="">So the bug is in the 4xx MSI code, and has always been there, in fact I don't
see how that code has *ever* worked. The commit you bisected to just caused the
existing bug to cause an oops.
Can you try this?
diff --git a/arch/powerpc/sysdev/ppc4xx_msi.c b/arch/powerpc/sysdev/ppc4xx_msi.c
index 6e2e6aa378bb..effb5b878a78 100644
--- a/arch/powerpc/sysdev/ppc4xx_msi.c
+++ b/arch/powerpc/sysdev/ppc4xx_msi.c
@@ -95,11 +95,9 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
list_for_each_entry(entry, &dev->msi_list, list) {
int_no = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1);
- if (int_no >= 0)
- break;
if (int_no < 0) {
- pr_debug("%s: fail allocating msi interrupt\n",
- __func__);
+ pr_warn("%s: fail allocating msi interrupt\n", __func__);
+ return -ENOSPC;
}
virq = irq_of_parse_and_map(msi_data->msi_dev, int_no);
if (virq == NO_IRQ) {
</pre>
</blockquote>
<pre wrap="">Thanks.
</pre>
</blockquote>
<blockquote type="cite">
<pre wrap="">This works with 3.17-rc1. Will try with the 3.18 Branch .
</pre>
</blockquote>
<pre wrap="">OK great.
</pre>
<blockquote type="cite">
<pre wrap="">Any ideas why drm is not working ? (It never worked) .
</pre>
</blockquote>
<pre wrap="">No sorry. You might have more luck if you post a new thread to the dri list.
</pre>
<blockquote type="cite">
<pre wrap="">[ 5.809802] Linux agpgart interface v0.103
[ 6.137893] [drm] Initialized drm 1.1.0 20060810
[ 6.439872] snd_hda_intel 0001:81:00.1: enabling device (0000 -> 0002)
[ 6.508544] ppc4xx_setup_msi_irqs: fail allocating msi interrupt
</pre>
</blockquote>
<pre wrap="">I'm curious why it's failing to allocate MSIs. Possibly it's just run out.
Can you post the output of 'cat /proc/interrupts'?
cheers
</pre>
</blockquote>
<br>
<br>
<pre class="western">cat /proc/interrupts
CPU0
18: 0 UIC 11 Edge L2C
19: 0 UIC 12 Level snd_ice1724
20: 1 UIC 16 Level
21: 306 UIC 17 Level snd_hda_intel
22: 12212 UIC 0 Level 0002:00:04.0
25: 619 UIC 6 Level MAL TX EOB
26: 937 UIC 7 Level MAL RX EOB
27: 0 UIC 3 Level MAL SERR
28: 0 UIC 4 Level MAL TX DE
31: 0 UIC 5 Level MAL RX DE
32: 6607 UIC 29 Level ehci_hcd:usb1
33: 1 UIC 30 Level ohci_hcd:usb2
38: 19 UIC 2 Level IBM IIC
39: 0 UIC 3 Level IBM IIC
40: 0 UIC 16 Level EMAC
44: 0 UIC 0 Edge aerdrv
45: 0 UIC 2 Edge aerdrv
LOC: 117318 Local timer interrupts for timer event device
LOC: 53 Local timer interrupts for others
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
MCE: 0 Machine check exceptions</pre>
<br>
More issues with Kernel 4.0.0-rc1<br>
<br>
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charset=utf-8">
<pre class="western">[ 33.535692] Unable to handle kernel paging request for data at address 0x00000008
[ 33.566786] Faulting instruction address: 0xc049db84
[ 33.574188] Vector: 300 (Data Access) at [eeb13c20]
[ 33.579086] pc: c049db84: radeon_audio_enable+0x4/0x18
[ 33.584630] lr: c049e2f4: radeon_audio_detect+0x288/0x290
[ 33.590429] sp: eeb13cd0
[ 33.593310] msr: 29000
[ 33.595931] dar: 8
[ 33.598207] dsisr: 0
[ 33.600480] current = 0xeea93ac0
[ 33.603885] pid = 2311, comm = Xorg
[ 33.607922] enter ? for help
[ 33.610806] [link register ] c049e2f4 radeon_audio_detect+0x288/0x290
[ 33.617469] [eeb13cd0] c049e254 radeon_audio_detect+0x1e8/0x290 (unreliable)
[ 33.624571] [eeb13d00] c03dfe7c radeon_dvi_detect+0x388/0x3ac
[ 33.630369] [eeb13d30] c038b9d4 drm_helper_probe_single_connector_modes_merge_bits+0xf4/0x434
[ 33.638954] [eeb13d70] c03a7670 drm_mode_getconnector+0xf4/0x334
[ 33.645022] [eeb13e10] c039a8c0 drm_ioctl+0x348/0x464
[ 33.650135] [eeb13ed0] c00d0ca0 do_vfs_ioctl+0x52c/0x6e8
[ 33.655507] [eeb13f20] c00d0e9c SyS_ioctl+0x40/0x68
[ 33.660438] [eeb13f40] c000ab04 ret_from_syscall+0x0/0x3c
[ 33.665896] --- Exception: c01 (System Call) at 6fb1b8dc
[ 33.671253] SP (bfa56d20) is in userspace
[ 33.675263] mon> <no input ...>
[ 35.703835] Oops: Kernel access of bad area, sig: 11 [#1]
[ 35.709554] PREEMPT Canyonlands
[ 35.712876] Modules linked in: cfg80211 snd_ice1724 snd_hda_codec_hdmi snd_ak4113 snd_pt2258 snd_ak4114 snd_i2c snd_ice17xx_ak4xxx snd_ak4xxx_adda snd_ac97_codec snd_hda_intel ac97_bus snd_hda_controller snd_rawmidi snd_hda_codec snd_seq_device snd_pcm snd_timer snd
[ 35.738047] CPU: 0 PID: 2311 Comm: Xorg Not tainted 4.0.0-rc1-Sam460ex #1
[ 35.745189] task: eea93ac0 ti: eeb12000 task.ti: eeb12000
[ 35.750872] NIP: c049db84 LR: c049e2f4 CTR: 00000000
[ 35.756098] REGS: eeb13c20 TRAP: 0300 Not tainted (4.0.0-rc1-Sam460ex)
[ 35.763241] MSR: 00029000 <CE,EE,ME> CR: 24004422 XER: 20000000
[ 35.769778] DEAR: 00000008 ESR: 00000000
GPR00: c049e254 eeb13cd0 eea93ac0 eaa84000 00000000 0000000f ee0532c0 000190d6
GPR08: eab6da00 00000000 00000000 eeb13cb0 28004422 b7a11ff4 b7a87a98 b7a87988
GPR16: 00000000 ffffffff 00000000 eeb13e18 eaa08194 eaa08178 00000001 00004000
GPR24: 00004000 c071cd28 fffffff2 00000000 eab6c000 eaa84000 eab6da00 eab80400
[ 35.804302] NIP [c049db84] radeon_audio_enable+0x4/0x18
[ 35.809799] LR [c049e2f4] radeon_audio_detect+0x288/0x290
[ 35.815480] Call Trace:
[ 35.818053] [eeb13cd0] [c049e254] radeon_audio_detect+0x1e8/0x290 (unreliable)
[ 35.825694] [eeb13d00] [c03dfe7c] radeon_dvi_detect+0x388/0x3ac
[ 35.831956] [eeb13d30] [c038b9d4] drm_helper_probe_single_connector_modes_merge_bits+0xf4/0x434
[ 35.841137] [eeb13d70] [c03a7670] drm_mode_getconnector+0xf4/0x334
[ 35.847663] [eeb13e10] [c039a8c0] drm_ioctl+0x348/0x464
[ 35.853183] [eeb13ed0] [c00d0ca0] do_vfs_ioctl+0x52c/0x6e8
[ 35.858974] [eeb13f20] [c00d0e9c] SyS_ioctl+0x40/0x68
[ 35.864307] [eeb13f40] [c000ab04] ret_from_syscall+0x0/0x3c
[ 35.870196] --- interrupt: c01 at 0x6fb1b8dc
[ 35.870196] LR = 0x6fb1b800
[ 35.877971] Instruction dump:
[ 35.881106] 8129012c 806a0018 2f890000 419e0018 81290004 2f890000 419e000c 7d2903a6
[ 35.889403] 4e800420 38600000 4e800020 81231c70 <81290008> 2f890000 4d9e0020 7d2903a6
[ 36.042121] ---[ end trace 3e83f5fa0d05c678 ]---
[ 36.046739]</pre>
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With Kernel 3.19<br>
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<pre class="western">[ 2.454668] Linux agpgart interface v0.103
[ 2.458979] [drm] Initialized drm 1.1.0 20060810
[ 2.463814] [drm] radeon kernel modesetting enabled.
[ 2.469870] [drm] initializing kernel modesetting (TURKS 0x1002:0x6758 0x1682:0x318B).
[ 2.478007] [drm] register mmio base: 0xe90000000
[ 2.482774] [drm] register mmio size: 131072
[ 2.665432] ATOM BIOS: TURKS
[ 2.668602] radeon 0001:81:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[ 2.677521] radeon 0001:81:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[ 2.685201] [drm] Detected VRAM RAM=1024M, BAR=256M
[ 2.690094] [drm] RAM width 128bits DDR
[ 2.694109] [TTM] Zone kernel: Available graphics memory: 379192 kiB
[ 2.700596] [TTM] Zone highmem: Available graphics memory: 1034552 kiB
[ 2.707147] [TTM] Initializing pool allocator
[ 2.711540] [TTM] Initializing DMA pool allocator
[ 2.716359] [drm] radeon: 1024M of VRAM memory ready
[ 2.721355] [drm] radeon: 1024M of GTT memory ready.
[ 2.726395] [drm] Loading TURKS Microcode
[ 2.730457] [drm] Internal thermal controller with fan control
[ 2.741697] [drm] radeon: dpm initialized
[ 2.745907] [drm] GART: num cpu pages 262144, num gpu pages 262144
[ 2.787690] [drm] PCIE GART of 1024M enabled (table at 0x0000000000274000).
[ 2.794953] radeon 0001:81:00.0: WB enabled
[ 2.799182] radeon 0001:81:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffc01c00
[ 2.809300] radeon 0001:81:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffc01c0c
[ 2.839260] radeon 0001:81:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0xf9032118
[ 2.849411] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.856067] [drm] Driver supports precise vblank timestamp query.
[ 2.862183] radeon 0001:81:00.0: radeon: MSI limited to 32-bit
[ 2.868058] ppc4xx_setup_msi_irqs: fail allocating msi interrupt
[ 2.874153] [drm] radeon: irq initialized.
[ 3.103973] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)
[ 3.112806] radeon 0001:81:00.0: disabling GPU acceleration
[ 3.128627] [drm] Radeon Display Connectors
[ 3.133369] [drm] Connector 0:
[ 3.136481] [drm] DP-1
[ 3.139089] [drm] HPD1
[ 3.141665] [drm] DDC: 0x6470 0x6470 0x6474 0x6474 0x6478 0x6478 0x647c 0x647c
[ 3.149146] [drm] Encoders:
[ 3.152157] [drm] DFP1: INTERNAL_UNIPHY2
[ 3.156473] [drm] Connector 1:
[ 3.159570] [drm] HDMI-A-1
[ 3.162469] [drm] HPD5
[ 3.165019] [drm] DDC: 0x6480 0x6480 0x6484 0x6484 0x6488 0x6488 0x648c 0x648c
[ 3.172436] [drm] Encoders:
[ 3.175415] [drm] DFP2: INTERNAL_UNIPHY2
[ 3.179703] [drm] Connector 2:
[ 3.182766] [drm] DVI-I-1
[ 3.185570] [drm] HPD4
[ 3.188117] [drm] DDC: 0x6450 0x6450 0x6454 0x6454 0x6458 0x6458 0x645c 0x645c
[ 3.195535] [drm] Encoders:
[ 3.198513] [drm] DFP3: INTERNAL_UNIPHY
[ 3.202706] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 3.352245] [drm] fb mappable at 0x80475000
[ 3.356458] [drm] vram apper at 0x80000000
[ 3.360570] [drm] size 8294400
[ 3.363634] [drm] fb depth is 24
[ 3.366873] [drm] pitch is 7680
[ 3.575080] Console: switching to colour frame buffer device 240x67
[ 3.649278] radeon 0001:81:00.0: fb0: radeondrmfb frame buffer device
[ 3.656071] radeon 0001:81:00.0: registered panic notifier
[ 3.666472] [drm] Initialized radeon 2.40.0 20080528 for 0001:81:00.0 on minor 0</pre>
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<br>
<pre wrap="">Problems with the Gib bisect
Kernel wont compile after 10th bisect .
drivers/built-in.o: In function `drm_mode_atomic_ioctl':
(.text+0x865dc): undefined reference to `__get_user_bad'
make: *** [vmlinux] Error 1
root@julian-VirtualBox:/usr/src/linux# git bisect log
git bisect start
# bad: [c517d838eb7d07bbe9507871fab3931deccff539] Linux 4.0-rc1
git bisect bad c517d838eb7d07bbe9507871fab3931deccff539
# good: [bfa76d49576599a4b9f9b7a71f23d73d6dcff735] Linux 3.19
git bisect good bfa76d49576599a4b9f9b7a71f23d73d6dcff735
# good: [02f1f2170d2831b3233e91091c60a66622f29e82] kernel.h: remove ancient __FUNCTION__ hack
git bisect good 02f1f2170d2831b3233e91091c60a66622f29e82
# bad: [796e1c55717e9a6ff5c81b12289ffa1ffd919b6f] Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
git bisect bad 796e1c55717e9a6ff5c81b12289ffa1ffd919b6f
# good: [9682ec9692e5ac11c6caebd079324e727b19e7ce] Merge tag 'driver-core-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect good 9682ec9692e5ac11c6caebd079324e727b19e7ce
# good: [a9724125ad014decf008d782e60447c811391326] Merge tag 'tty-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
git bisect good a9724125ad014decf008d782e60447c811391326
# good: [f43dff0ee00a259f524ce17ba4f8030553c66590] Merge tag 'drm-amdkfd-next-fixes-2015-01-25' of git://people.freedesktop.org/~gabbayo/linux into drm-next
git bisect good f43dff0ee00a259f524ce17ba4f8030553c66590
# bad: [cffe1e89dc9bf541a39d9287ced7c5addff07084] drm: sti: HDMI add audio infoframe
git bisect bad cffe1e89dc9bf541a39d9287ced7c5addff07084
# good: [2f5b4ef15c60bc5292a3f006c018acb3da53737b] Merge tag 'drm/tegra/for-3.20-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next
git bisect good 2f5b4ef15c60bc5292a3f006c018acb3da53737b
# bad: [865844448ce80ccd714793e9ba4140d7ae214229] drm/udl: optimize udl_compress_hline16 (v2)
git bisect bad 865844448ce80ccd714793e9ba4140d7ae214229
# bad: [d47df63393ed81977e0f6435988d9cbd70c867f7] drm/panel: simple: Add AVIC TM070DDH03 panel support
git bisect bad d47df63393ed81977e0f6435988d9cbd70c867f7
# bad: [9469244d869623e8b54d9f3d4d00737e377af273] drm/atomic: Fix potential use of state after free
git bisect bad 9469244d869623e8b54d9f3d4d00737e377af273
</pre>
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