Another one for Jairo.
-Daniel
On Thu, Sep 17, 2015 at 03:19:44PM +0200, Frank de Jong wrote:
> Hello,
>
> A regression/bug was introduced by commit
> [0e572fe7383a376992364914694c39aa7fe44c1d] drm/i915: runtime PM support for
> DPMS.
> It causes my linux box to emit PATA and NIC errors (PCI bus stops working),
> SATA is unaffected. The system freezes shorty after. Trouble starts within
> 12 hours, but not right away.
> Git bisect was used to find the regression/bug. It was initially introduced
> somewhere around kernel v3.15.0-rc8 (code has moved around since).
>
> *** for details and logs, please scroll down ***
>
> Hardware details:
> - MSI MS-7732/PH61A-P35 (MS-7732), BIOS V2.4 09/19/2014
> - Sandy Bridge Intel(R) Pentium(R) CPU G620
> - 8 GiB RAM
> - CRT monitor without EDID (not "plug and play") hooked up to the i915 CRT
> port
> - 1x SSD connected to ASM1062 SATA controller
> - 2x HDD connected to Intel SATA controller
> - CDROM drive (ata9) and HDD (ata10) connected to Promise PDC20268
> - Uncommon hardware configuration (old PCI PATA controller and PCI NIC)
>
> Other:
> - Running on LFS 7.1+ x86_64
> - DPMS powersave enabled (setterm -powersave powerdown -powerdown 5)
> - text based, no X
> - Has VM's (QEMU KVM) running on top
>
> Testing revealed:
> v3.18.21: NOT OK
> v3.17.8 : NOT OK
> v3.17.0 : NOT OK
> v3.16.7 : OK
> v3.16.0 : OK
> v3.14.51: OK
>
> As a test, function intel_crtc_update_dpms() in
> v3.18.20/drivers/gpu/drm/i915/intel_display.c was replaced with an older
> revision (see below). The older revision works fine; it bypasses the
> function intel_crtc_control().
>
> So what is going wrong here? Perhaps something to do with the power domains,
> lack of EDID? Or might it just trigger some bug/regression hidden deep in
> the kernel?
>
> I do not have the know-how to fix this. You guys do, ofcourse! :-)
>
>
> /**
> * Sets the power management mode of the pipe and plane.
> */
> void intel_crtc_update_dpms(struct drm_crtc *crtc)
> {
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct intel_encoder *intel_encoder;
> bool enable = false;
>
> for_each_encoder_on_crtc(dev, crtc, intel_encoder)
> enable |= intel_encoder->connectors_active;
>
> if (enable)
> dev_priv->display.crtc_enable(crtc);
> else
> dev_priv->display.crtc_disable(crtc);
>
> intel_crtc_update_sarea(crtc, enable);
> }
>
>
> # /proc/cmdline
> # noirqdebug: "ASM1083/1085 PCIe to PCI Bridge" has hardware issues, skips a
> IRQ beat now and then
> root=LABEL=ROOTFS selinux=0 video=800x600-32@72 acpi_enforce_resources=lax
> thermal.off=1 noirqdebug
>
>
> # /proc/interrupts
> 0: 14 0 IO-APIC-edge timer
> 1: 12 0 IO-APIC-edge i8042
> 4: 57380 0 IO-APIC-edge serial
> 5: 0 0 IO-APIC-edge parport0
> 8: 119 0 IO-APIC-edge rtc0
> 9: 3 0 IO-APIC-fasteoi acpi
> 12: 147 0 IO-APIC-edge i8042
> 16: 746 0 IO-APIC 16-fasteoi ehci_hcd:usb1
> 18: 7305 0 IO-APIC 18-fasteoi 0000:03:00.0
> 19: 64979 0 IO-APIC 19-fasteoi eth0
> 23: 33 0 IO-APIC 23-fasteoi ehci_hcd:usb3
> 24: 762 0 PCI-MSI-edge 0000:00:1f.2
> 25: 12926 0 PCI-MSI-edge 0000:06:00.0
> 26: 16017 0 PCI-MSI-edge eth1
> 27: 0 0 PCI-MSI-edge xhci_hcd
> 28: 0 0 PCI-MSI-edge xhci_hcd
> 29: 0 0 PCI-MSI-edge xhci_hcd
> 30: 517 0 PCI-MSI-edge snd_hda_intel
> 31: 7 0 PCI-MSI-edge i915
> NMI: 0 0 Non-maskable interrupts
> LOC: 1024537 205875 Local timer interrupts
> SPU: 0 0 Spurious interrupts
> PMI: 0 0 Performance monitoring interrupts
> IWI: 0 0 IRQ work interrupts
> RTR: 1 0 APIC ICR read retries
> RES: 17909 21506 Rescheduling interrupts
> CAL: 7297 7219 Function call interrupts
> TLB: 346 209 TLB shootdowns
> TRM: 0 0 Thermal event interrupts
> THR: 0 0 Threshold APIC interrupts
> MCE: 0 0 Machine check exceptions
> MCP: 11 11 Machine check polls
> ERR: 0
> MIS: 0
>
>
> # lspci
> 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family
> DRAM Controller (rev 09)
> 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
> Processor Family Integrated Graphics Controller (rev 09)
> 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series
> Chipset Family MEI Controller #1 (rev 04)
> 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset
> Family USB Enhanced Host Controller #2 (rev 05)
> 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family
> High Definition Audio Controller (rev 05)
> 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family
> PCI Express Root Port 1 (rev b5)
> 00:1c.2 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5)
> 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family
> PCI Express Root Port 4 (rev b5)
> 00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family
> PCI Express Root Port 5 (rev b5)
> 00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family
> PCI Express Root Port 6 (rev b5)
> 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset
> Family USB Enhanced Host Controller #1 (rev 05)
> 00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC
> Controller (rev 05)
> 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset
> Family SATA AHCI Controller (rev 05)
> 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus
> Controller (rev 05)
> 02:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge
> (rev 01)
> 03:00.0 Mass storage controller: Promise Technology, Inc. PDC20268 [Ultra100
> TX2] (rev 02)
> 03:01.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado] (rev
> 74)
> 04:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host
> Controller
> 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B
> PCI Express Gigabit Ethernet controller (rev 06)
> 06:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA
> Controller (rev 01)
>
>
> # logging: so it begins
> Sep 8 04:13:06 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Sep 8 04:18:13 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Sep 8 04:19:55 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Sep 8 04:37:42 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Sep 8 04:41:58 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Sep 8 04:47:06 syscore kernel: ata9: drained 2 bytes to clear DRQ
>
>
> # logging: and it ends like this (kernel lock-up if unlucky)
> Jun 14 18:32:59 syscore kernel: ata9: drained 2 bytes to clear DRQ
> Jun 14 18:33:04 syscore kernel: ata9.00: qc timeout (cmd 0xa0)
> Jun 14 18:33:04 syscore kernel: ata9.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x6 frozen
> Jun 14 18:33:16 syscore kernel: sr 8:0:0:0: CDB:
> Jun 14 18:33:16 syscore kernel: Get event status notification: 4a 01 00 00
> 10 00 00 00 08 00
> Jun 14 18:33:16 syscore kernel: ata9.00: cmd
> a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0 pio 16392 in
> Jun 14 18:33:16 syscore kernel: res 51/54:03:00:08:00/00:00:00:00:00/a0
> Emask 0x5 (timeout)
> Jun 14 18:33:16 syscore kernel: ata9.00: status: { DRDY ERR }
> Jun 14 18:33:16 syscore kernel: ata9: soft resetting link
> Jun 14 18:33:16 syscore kernel: eth0: Transmit error, Tx status register ff.
> Jun 14 18:33:16 syscore kernel: Flags; bus-master 1, dirty 51677(13) current
> 51677(13)
> Jun 14 18:33:16 syscore kernel: Transmit list ffffffff vs. ffff8800d781e9b8.
> Jun 14 18:33:16 syscore kernel: 0: @ffff8800d781e200 length 8000008d status
> 0001008d
> Jun 14 18:33:16 syscore kernel: 1: @ffff8800d781e298 length 80000048 status
> 00010048
> Jun 14 18:33:16 syscore kernel: 2: @ffff8800d781e330 length 800000b7 status
> 000100b7
> Jun 14 18:33:16 syscore kernel: 3: @ffff8800d781e3c8 length 800000a7 status
> 000100a7
> Jun 14 18:33:16 syscore kernel: 4: @ffff8800d781e460 length 00000080 status
> 00010102
> Jun 14 18:33:16 syscore kernel: 5: @ffff8800d781e4f8 length 80000042 status
> 00010042
> Jun 14 18:33:16 syscore kernel: 6: @ffff8800d781e590 length 80000042 status
> 00010042
> Jun 14 18:33:16 syscore kernel: 7: @ffff8800d781e628 length 80000042 status
> 00010042
> Jun 14 18:33:16 syscore kernel: 8: @ffff8800d781e6c0 length 80000042 status
> 00010042
> Jun 14 18:33:16 syscore kernel: 9: @ffff8800d781e758 length 80000042 status
> 00010042
> Jun 14 18:33:16 syscore kernel: 10: @ffff8800d781e7f0 length 00000080
> status 0001014d
> Jun 14 18:33:16 syscore kernel: 11: @ffff8800d781e888 length 80000048
> status 00010048
> Jun 14 18:33:16 syscore kernel: 12: @ffff8800d781e920 length 800000a7
> status 800100a7
> Jun 14 18:33:16 syscore kernel: 13: @ffff8800d781e9b8 length 80000042
> status 00010042
> Jun 14 18:33:16 syscore kernel: 14: @ffff8800d781ea50 length 80000042
> status 00010042
> Jun 14 18:33:16 syscore kernel: 15: @ffff8800d781eae8 length 00000080
> status 00010102
> Jun 14 18:33:16 syscore kernel: eth0: Updating statistics failed, disabling
> stats as an interrupt source
> Jun 14 18:33:16 syscore kernel: eth0: Host error, FIFO diagnostic register
> ffff.
> Jun 14 18:33:16 syscore kernel: eth0: PCI bus error, bus status ffffffff
> Jun 14 18:33:16 syscore kernel: eth0: setting full-duplex.
> Jun 14 18:33:16 syscore kernel: eth0: command 0x5800 did not complete!
> Status=0xffff
> Jun 14 18:33:16 syscore kernel: sched: RT throttling activated
> Jun 14 18:33:16 syscore kernel: ata9.00: qc timeout (cmd 0xa1)
> Jun 14 18:33:16 syscore kernel: ata9.00: failed to IDENTIFY (I/O error,
> err_mask=0x5)
> Jun 14 18:33:16 syscore kernel: ata9.00: revalidation failed (errno=-5)
> Jun 14 18:33:16 syscore kernel: ata9: soft resetting link
> Jun 14 18:33:16 syscore kernel: pata_pdc2027x: 40-conductor cable detected
> on port 0
> Jun 14 18:33:16 syscore kernel: ata9.00: configured for MWDMA2
> Jun 14 18:33:16 syscore kernel: ata9: EH complete
>
>
> # logging: more of the same
> Sep 10 15:34:21 syscore kernel: ata10.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x0
> Sep 10 15:34:21 syscore kernel: ata10.00: BMDMA stat 0xff
> Sep 10 15:34:21 syscore kernel: ata10.00: failed command: READ DMA EXT
> Sep 10 15:34:21 syscore kernel: ata10.00: cmd
> 25/00:00:48:d6:fd/00:01:21:00:00/e0 tag 0 dma 131072 in
> Sep 10 15:34:21 syscore kernel: res 50/00:00:47:d7:fd/00:00:21:00:00/e0
> Emask 0x20 (host bus error)
> Sep 10 15:34:21 syscore kernel: ata10.00: status: { DRDY }
> Sep 10 15:34:22 syscore kernel: ata10.00: configured for UDMA/100
> Sep 10 15:34:22 syscore kernel: ata10: EH complete
> Sep 10 15:34:23 syscore kernel: ata10: drained 202 bytes to clear DRQ
> Sep 10 15:34:23 syscore kernel: ata10.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x0
> Sep 10 15:34:23 syscore kernel: ata10.00: BMDMA stat 0xff
> Sep 10 15:34:23 syscore kernel: ata10.00: failed command: READ DMA EXT
> Sep 10 15:34:23 syscore kernel: ata10.00: cmd
> 25/00:00:48:d6:fd/00:01:21:00:00/e0 tag 0 dma 131072 in
> Sep 10 15:34:23 syscore kernel: res 50/00:00:47:d7:fd/00:00:21:00:00/e0
> Emask 0x20 (host bus error)
> Sep 10 15:34:23 syscore kernel: ata10.00: status: { DRDY }
> Sep 10 15:34:23 syscore kernel: ata10.00: n_sectors mismatch 586114704 !=
> 268435455
> Sep 10 15:34:23 syscore kernel: ata10.00: old n_sectors matches native,
> probably late HPA lock, will try to unlock HPA
> Sep 10 15:34:23 syscore kernel: ata10.00: revalidation failed (errno=-5)
> Sep 10 15:34:23 syscore kernel: ata10: soft resetting link
> Sep 10 15:34:33 syscore kernel: eth0: Transmit error, Tx status register ff.
> Sep 10 15:34:33 syscore kernel: Flags; bus-master 1, dirty 36208(0) current
> 36208(0)
> Sep 10 15:34:33 syscore kernel: Transmit list ffffffff vs. ffff88001fafc200.
> Sep 10 15:34:33 syscore kernel: 0: @ffff88001fafc200 length 80000071 status
> 00010071
> Sep 10 15:34:33 syscore kernel: 1: @ffff88001fafc298 length 80000036 status
> 00010036
> Sep 10 15:34:33 syscore kernel: 2: @ffff88001fafc330 length 8000005c status
> 0001005c
> Sep 10 15:34:33 syscore kernel: 3: @ffff88001fafc3c8 length 80000036 status
> 00010036
> Sep 10 15:34:33 syscore kernel: 4: @ffff88001fafc460 length 80000036 status
> 00010036
> Sep 10 15:34:33 syscore kernel: 5: @ffff88001fafc4f8 length 80000064 status
> 00010064
> Sep 10 15:34:33 syscore kernel: 6: @ffff88001fafc590 length 8000002a status
> 0001002a
> Sep 10 15:34:33 syscore kernel: 7: @ffff88001fafc628 length 80000064 status
> 00010064
> Sep 10 15:34:33 syscore kernel: 8: @ffff88001fafc6c0 length 80000036 status
> 00010036
> Sep 10 15:34:33 syscore kernel: 9: @ffff88001fafc758 length 80000064 status
> 00010064
> Sep 10 15:34:33 syscore kernel: 10: @ffff88001fafc7f0 length 80000055
> status 00010055
> Sep 10 15:34:33 syscore kernel: 11: @ffff88001fafc888 length 80000036
> status 00010036
> Sep 10 15:34:33 syscore kernel: 12: @ffff88001fafc920 length 8000002a
> status 0001002a
> Sep 10 15:34:33 syscore kernel: 13: @ffff88001fafc9b8 length 8000004a
> status 0c01004a
> Sep 10 15:34:33 syscore kernel: 14: @ffff88001fafca50 length 8000004a
> status 0c01004a
> Sep 10 15:34:33 syscore kernel: 15: @ffff88001fafcae8 length 8000004a
> status 8c01004a
> Sep 10 15:34:33 syscore kernel: eth0: Updating statistics failed, disabling
> stats as an interrupt source.
> Sep 10 15:34:33 syscore kernel: eth0: Host error, FIFO diagnostic register
> ffff.
> Sep 10 15:34:33 syscore kernel: eth0: PCI bus error, bus status ffffffff
> Sep 10 15:34:34 syscore kernel: eth0: setting full-duplex.
> Sep 10 15:34:34 syscore kernel: eth0: command 0x5800 did not complete!
> Status=0xffff
> Sep 10 15:34:34 syscore kernel: [sched_delayed] sched: RT throttling
> activated
> Sep 10 15:34:34 syscore kernel: ata10.00: configured for UDMA/100
> Sep 10 15:34:34 syscore kernel: ata10: EH complete
> Sep 10 15:34:34 syscore kernel: ata10: drained 292 bytes to clear DRQ
> Sep 10 15:34:34 syscore kernel: ata10.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x0
> Sep 10 15:34:34 syscore kernel: ata10.00: BMDMA stat 0xff
> Sep 10 15:34:34 syscore kernel: ata10.00: failed command: READ DMA EXT
> Sep 10 15:34:34 syscore kernel: ata10.00: cmd
> 25/00:00:48:d6:fd/00:01:21:00:00/e0 tag 0 dma 131072 in
> Sep 10 15:34:34 syscore kernel: res 50/00:00:47:d7:fd/00:00:21:00:00/e0
> Emask 0x20 (host bus error)
> Sep 10 15:34:34 syscore kernel: ata10.00: status: { DRDY }
> Sep 10 15:34:34 syscore kernel: ata10.00: configured for UDMA/100
> Sep 10 15:34:34 syscore kernel: ata10: EH complete
>
>
> Kind regards,
> Frank de Jong
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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