Hi,
On Wednesday, 23 of November 2005 04:08, Benjamin Herrenschmidt wrote:
> This is my latest patch against current linus -git, it closes the IRQ
> race and makes various other OHCI & EHCI code path safer vs.
> suspend/resume. I've been able to (finally !) successfully suspend and
> resume various Mac models, with or without USB mouse plugged, or
> plugging while asleep, or unplugging while asleep etc... all without a
> crash. There are still some races here or there in the USB code, but at
> least the main cause of crash is now fixes by this patch (access to a
> controller that has been suspended, due to either shared interrupts or
> other code path).
>
> I haven't fixed UHCI as I don't have any HW to test, though I hope I
> haven't broken it neither. Alan, I would appreciate if you could have a
> look.
>
> This patch applies on top of the patch that moves the PowerMac specific
> code out of ohci-pci.c to hcd-pci.c where it belongs. This patch isn't
> upstream yet for reasons I don't fully understand (why does USB stuffs
> has such a high latency for going upstream ?), I'm sending it as a reply
> to this email for completeness.
>
> Without this patch, you cannot reliably sleep/wakeup any recent Mac, and
> I suspect PCs have some more sneaky issues too (they don't frankly crash
> with machine checks because x86 tend to silently swallow PCI errors but
> that won't last afaik, at least PCI Express will blow up in those
> situations, but the USB code may still misbehave).
Unfortunately with this patch the EHCI controller in my box (Asus L5D,
x86-64 kernel) does not resume from suspend. Appended is the relevant
snippet from the serial console log (EHCI is the only device using IRQ #5).
Greetings,
Rafael
PM: Image restored successfully.
ohci_hcd 0000:00:02.0: PCI D0, from previous PCI D3
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LUS0] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:02.0 to 64
ohci_hcd 0000:00:02.1: PCI D0, from previous PCI D3
ACPI: PCI Interrupt 0000:00:02.1[B] -> Link [LUS1] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:02.1 to 64
ehci_hcd 0000:00:02.2: PCI D0, from previous PCI D3
ACPI: PCI Interrupt 0000:00:02.2[C] -> Link [LUS2] -> GSI 5 (level, low) -> IRQ 5
PCI: Setting latency timer of device 0000:00:02.2 to 64
ehci_hcd 0000:00:02.2: lost power, restarting
usb usb3: root hub lost power or was reset
ehci_hcd 0000:00:02.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset HALT
ehci_hcd 0000:00:02.2: debug port 1
ehci_hcd 0000:00:02.2: capability 1000001 at a0
PCI: cache line size of 64 is not supported by device 0000:00:02.2
ehci_hcd 0000:00:02.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset HALT
ehci_hcd 0000:00:02.2: init command 010009 (park)=0 ithresh=1 period=256 RUN
ehci_hcd 0000:00:02.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
ACPI: PCI Interrupt 0000:00:06.0[A] -> Link [LAUI] -> GSI 10 (level, low) -> IRQ 10
PCI: Setting latency timer of device 0000:00:06.0 to 64
irq 5: nobody cared (try booting with the "irqpoll" option)
Call Trace: <IRQ> <ffffffff80250c3e>{add_preempt_count+94} <ffffffff8015a878>{__report_bad_irq+56}
<ffffffff8015aab4>{note_interrupt+484} <ffffffff8015a317>{__do_IRQ+199}
<ffffffff801110f7>{do_IRQ+55} <ffffffff8010f100>{ret_from_intr+0}
<ffffffff8010fb02>{call_softirq+30} <ffffffff80138714>{__do_softirq+68}
<ffffffff801386ff>{__do_softirq+47} <ffffffff8010fb02>{call_softirq+30}
<ffffffff801110b5>{do_softirq+53} <ffffffff8013849f>{irq_exit+63}
<ffffffff801110fc>{do_IRQ+60} <ffffffff8010f100>{ret_from_intr+0}
<EOI> <ffffffff802c183a>{serial8250_console_write+186}
<ffffffff80132dad>{release_console_sem+333} <ffffffff80133587>{vprintk+775}
<ffffffff80133682>{printk+162} <ffffffff80133682>{printk+162}
<ffffffff8036003d>{_spin_unlock_irqrestore+29} <ffffffff80252c31>{pci_bus_read_config_byte+113}
<ffffffff802ed6fe>{pcibios_set_master+110} <ffffffff80255415>{pci_set_master+85}
<ffffffff88180eb7>{:snd_intel8x0:intel8x0_resume+39}
<ffffffff8812a9e7>{:snd:snd_card_pci_resume+55} <ffffffff80256c74>{pci_device_resume+36}
<ffffffff802d5cdd>{resume_device+157} <ffffffff802d5e23>{dpm_resume+147}
<ffffffff802d5e90>{device_resume+32} <ffffffff80153508>{pm_suspend_disk+296}
<ffffffff80150f10>{enter_state+112} <ffffffff80151147>{state_store+119}
<ffffffff801bfdd4>{subsys_attr_store+36} <ffffffff801c025a>{sysfs_write_file+202}
<ffffffff8017fb09>{vfs_write+233} <ffffffff8017fcb0>{sys_write+80}
<ffffffff8010eb5e>{system_call+126}
---------------------------
| preempt count: 00010103 ]
| 3 level deep critical section nesting:
----------------------------------------
.. [<ffffffff801332a4>] .... vprintk+0x24/0x360
.....[<ffffffff80133682>] .. ( <= printk+0xa2/0xb0)
.. [<ffffffff80360176>] .... _spin_lock+0x16/0x30
.....[<ffffffff8015a2fc>] .. ( <= __do_IRQ+0xac/0x120)
.. [<ffffffff80360176>] .... _spin_lock+0x16/0x30
.....[<ffffffff8015a2fc>] .. ( <= __do_IRQ+0xac/0x120)
handlers:
[<ffffffff80260970>] (usb_hcd_irq+0x0/0x70)
Disabling IRQ #5
0000:00:00.0 Host bridge: nVidia Corporation nForce3 Host Bridge (rev a4)
Subsystem: ASUSTeK Computer Inc.: Unknown device 80c5
Flags: bus master, 66Mhz, fast devsel, latency 0
Memory at e8000000 (32-bit, prefetchable) [size=128M]
Capabilities: <available only to root>
0000:00:01.0 ISA bridge: nVidia Corporation nForce3 LPC Bridge (rev f6)
Subsystem: ASUSTeK Computer Inc.: Unknown device 80c5
Flags: bus master, 66Mhz, fast devsel, latency 0
0000:00:01.1 SMBus: nVidia Corporation nForce3 SMBus (rev a4)
Subsystem: ASUSTeK Computer Inc.: Unknown device 80c5
Flags: 66Mhz, fast devsel
I/O ports at 5000 [size=64]
I/O ports at 5040 [size=64]
Capabilities: <available only to root>
0000:00:02.0 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5) (prog-if 10 [OHCI])
Subsystem: ASUSTeK Computer Inc.: Unknown device 1858
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 11
Memory at febfb000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
0000:00:02.1 USB Controller: nVidia Corporation nForce3 USB 1.1 (rev a5) (prog-if 10 [OHCI])
Subsystem: ASUSTeK Computer Inc.: Unknown device 1858
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 11
Memory at febfc000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
0000:00:02.2 USB Controller: nVidia Corporation nForce3 USB 2.0 (rev a2) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc.: Unknown device 1859
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 5
Memory at febfdc00 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
0000:00:06.0 Multimedia audio controller: nVidia Corporation nForce3 Audio (rev a2)
Subsystem: ASUSTeK Computer Inc.: Unknown device 1853
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 10
I/O ports at e800 [size=256]
I/O ports at ec00 [size=128]
Memory at febff000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
0000:00:08.0 IDE interface: nVidia Corporation nForce3 IDE (rev a5) (prog-if 8a [Master SecP PriP])
Subsystem: ASUSTeK Computer Inc.: Unknown device 185a
Flags: bus master, 66Mhz, fast devsel, latency 0
I/O ports at ffa0 [size=16]
Capabilities: <available only to root>
0000:00:0a.0 PCI bridge: nVidia Corporation nForce3 PCI Bridge (rev a2) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=04, sec-latency=128
I/O behind bridge: 0000b000-0000dfff
Memory behind bridge: f8a00000-feafffff
Prefetchable memory behind bridge: 40000000-43ffffff
0000:00:0b.0 PCI bridge: nVidia Corporation nForce3 AGP Bridge (rev a4) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: f6900000-f89fffff
Prefetchable memory behind bridge: c6800000-e67fffff
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
Flags: fast devsel
Capabilities: <available only to root>
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
Flags: fast devsel
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
Flags: fast devsel
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
Flags: fast devsel
0000:01:00.0 VGA compatible controller: nVidia Corporation NV31M [GeForce FX Go5650] (rev a1) (prog-if 00 [VGA])
Subsystem: ASUSTeK Computer Inc.: Unknown device 1852
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11
Memory at f7000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (32-bit, prefetchable) [size=256M]
Expansion ROM at f89e0000 [disabled] [size=128K]
Capabilities: <available only to root>
0000:02:00.0 Ethernet controller: Marvell Technology Group Ltd. Gigabit Ethernet Controller (rev 13)
Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet Controller (Asus)
Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 10
Memory at feaf8000 (32-bit, non-prefetchable) [size=16K]
I/O ports at d800 [size=256]
Expansion ROM at feac0000 [disabled] [size=128K]
Capabilities: <available only to root>
0000:02:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ab)
Subsystem: ASUSTeK Computer Inc.: Unknown device 1854
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at fd200000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
Memory window 0: 40000000-41fff000 (prefetchable)
Memory window 1: fc600000-fd1ff000
I/O window 0: 0000b000-0000b0ff
I/O window 1: 0000b400-0000b4ff
16-bit legacy interface ports at 0001
0000:02:01.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ab)
Subsystem: ASUSTeK Computer Inc.: Unknown device 1854
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at fa200000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
Memory window 0: 42000000-43fff000 (prefetchable)
Memory window 1: f9600000-fa1ff000
I/O window 0: 0000b800-0000b8ff
I/O window 1: 0000bc00-0000bcff
16-bit legacy interface ports at 0001
0000:02:01.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 03) (prog-if 10 [OHCI])
Subsystem: ASUSTeK Computer Inc.: Unknown device 1857
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at feafd000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <available only to root>
0000:02:01.3 System peripheral: Ricoh Co Ltd: Unknown device 0576 (rev 01)
Subsystem: ASUSTeK Computer Inc.: Unknown device 185b
Flags: medium devsel, IRQ 11
Memory at feafd800 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
0000:02:01.4 System peripheral: Ricoh Co Ltd: Unknown device 0592
Subsystem: ASUSTeK Computer Inc.: Unknown device 185c
Flags: medium devsel, IRQ 11
Memory at feafdc00 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
0000:02:02.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)
Subsystem: ASUSTeK Computer Inc.: Unknown device 120f
Flags: bus master, fast devsel, latency 64, IRQ 11
Memory at feafe000 (32-bit, non-prefetchable) [size=8K]
Capabilities: <available only to root>
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