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Date: Tue, 01 Jan 2013 22:34:58 +0400
From: Konstantin Khlebnikov <khlebnikov@...nvz.org>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [REGRESSION 3.8-r1] broken pci irq/pm state for e1000e device
Seems like it's unrelated to e1000e driver itself, because I tried to
revert all it's changes down to 3.6 one by one and it does not help.
Looks like regression somewhere in pci-bus irq or power-management.
because I see underflow of counter pci_dev->enable_cnt:
root@...g:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable ; modprobe e1000e ; sleep 2 ; rmmod e1000e ; cat 0000\:00\:19.0/enable
4294967288
4294967287
without sleep in the middle it does not work
my kernel config in attachment
hardware: lenovo thinkpad x220
root@...g:/sys/bus/pci/devices# uname -a
Linux zurg 3.8.0-rc1-zurg-00091-g4a490b7 #632 SMP Tue Jan 1 20:02:31 MSK 2013 x86_64 GNU/Linux
---
Right after boot it looks like this:
root@...g:/sys/bus/pci/devices# 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)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b4)
00:1c.6 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter
0d:00.0 System peripheral: Ricoh Co Ltd MMC/SD Host Controller (rev 07)
0e:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
root@...g:/sys/bus/pci/devices# cat 0000\:00\:19.0/irq
20
root@...g:/sys/bus/pci/devices# cat 0000\:00\:19.0/enable
0
here must be '1', not '0'
root@...g:/sys/bus/pci/devices# dmesg | grep e1000e
[ 1.271303] e1000e: Intel(R) PRO/1000 Network Driver - 2.1.4-k
[ 1.271303] e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
[ 1.271344] e1000e 0000:00:19.0: setting latency timer to 64
[ 1.273035] e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 1.274217] e1000e 0000:00:19.0: irq 48 for MSI/MSI-X
[ 1.468660] e1000e 0000:00:19.0 eth0: (PCI Express:2.5GT/s:Width x1) f0:de:f1:87:98:02
[ 1.471679] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection
[ 1.473344] e1000e 0000:00:19.0 eth0: MAC: 10, PHY: 11, PBA No: 1000FF-0FF
[ 6.034076] e1000e 0000:00:19.0: irq 48 for MSI/MSI-X
[ 6.135039] e1000e 0000:00:19.0: irq 48 for MSI/MSI-X
root@...g:/sys/bus/pci/devices# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 28 0 0 0 IR-IO-APIC-edge timer
1: 3198 0 0 0 IR-IO-APIC-edge i8042
8: 1 0 0 0 IR-IO-APIC-edge rtc0
9: 564 0 0 0 IR-IO-APIC-fasteoi acpi
12: 37034 0 0 0 IR-IO-APIC-edge i8042
16: 93 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb1, mmc0
18: 0 0 0 0 IR-IO-APIC-fasteoi i801_smbus
23: 447 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb2
40: 0 0 0 0 DMAR_MSI-edge dmar0
41: 0 0 0 0 DMAR_MSI-edge dmar1
42: 34463 0 0 0 IR-PCI-MSI-edge ahci
43: 1 0 0 0 IR-PCI-MSI-edge xhci_hcd
44: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
45: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
46: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
47: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
48: 16487 0 0 0 IR-PCI-MSI-edge iwlwifi
49: 25 0 0 0 IR-PCI-MSI-edge mei
50: 10166 0 0 0 IR-PCI-MSI-edge i915
51: 213 0 0 0 IR-PCI-MSI-edge snd_hda_intel
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 42979 14460 30130 16998 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 15239 19431 1569 823 Rescheduling interrupts
CAL: 62 73 65 70 Function call interrupts
TLB: 376 616 380 560 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 3 3 3 3 Machine check polls
ERR: 0
MIS: 0
devices not see carrier signal:
root@...g:/sys/bus/pci/devices# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: sit0: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT
link/sit 0.0.0.0 brd 0.0.0.0
3: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
link/ether f0:de:f1:87:98:02 brd ff:ff:ff:ff:ff:ff
4: wwan0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
link/ether 02:80:37:ec:02:00 brd ff:ff:ff:ff:ff:ff
5: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master br0 state UNKNOWN mode DEFAULT qlen 500
link/ether 7e:28:c2:97:d5:f7 brd ff:ff:ff:ff:ff:ff
6: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 7e:28:c2:97:d5:f7 brd ff:ff:ff:ff:ff:ff
7: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT qlen 1000
link/ether 00:16:eb:1e:7b:10 brd ff:ff:ff:ff:ff:ff
after s2ram suspend-resume cycle device uses other irq and starts working:
[ 1035.674907] e1000e: Intel(R) PRO/1000 Network Driver - 2.1.4-k
[ 1035.674917] e1000e: Copyright(c) 1999 - 2012 Intel Corporation.
[ 1035.674998] e1000e 0000:00:19.0: setting latency timer to 64
[ 1035.675229] e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 1035.675336] e1000e 0000:00:19.0: irq 52 for MSI/MSI-X
[ 1035.869874] e1000e 0000:00:19.0 eth0: (PCI Express:2.5GT/s:Width x1) f0:de:f1:87:98:02
[ 1035.869886] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection
[ 1035.869959] e1000e 0000:00:19.0 eth0: MAC: 10, PHY: 11, PBA No: 1000FF-0FF
[ 1036.005531] e1000e 0000:00:19.0: irq 52 for MSI/MSI-X
[ 1036.106151] e1000e 0000:00:19.0: irq 52 for MSI/MSI-X
[ 1038.933035] e1000e 0000:00:19.0: irq 52 for MSI/MSI-X
[ 1039.742505] e1000e 0000:00:19.0: System wakeup enabled by ACPI
[ 1040.368054] e1000e 0000:00:19.0: System wakeup disabled by ACPI
[ 1040.368159] e1000e 0000:00:19.0: irq 51 for MSI/MSI-X
[ 1044.552071] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
root@...g:/sys/bus/pci/devices# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: sit0: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT
link/sit 0.0.0.0 brd 0.0.0.0
5: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master br0 state UNKNOWN mode DEFAULT qlen 500
link/ether 7e:28:c2:97:d5:f7 brd ff:ff:ff:ff:ff:ff
6: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT
link/ether 7e:28:c2:97:d5:f7 brd ff:ff:ff:ff:ff:ff
7: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT qlen 1000
link/ether 00:16:eb:1e:7b:10 brd ff:ff:ff:ff:ff:ff
28: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
link/ether f0:de:f1:87:98:02 brd ff:ff:ff:ff:ff:ff
29: wwan0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
link/ether 02:80:37:ec:02:00 brd ff:ff:ff:ff:ff:ff
root@...g:/sys/bus/pci/devices# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 28 0 0 0 IR-IO-APIC-edge timer
1: 7705 0 0 0 IR-IO-APIC-edge i8042
8: 1 0 0 0 IR-IO-APIC-edge rtc0
9: 816 0 0 0 IR-IO-APIC-fasteoi acpi
12: 62277 0 0 0 IR-IO-APIC-edge i8042
16: 158 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb1, mmc0
18: 0 0 0 0 IR-IO-APIC-fasteoi i801_smbus
23: 1265 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb2
40: 0 0 0 0 DMAR_MSI-edge dmar0
41: 0 0 0 0 DMAR_MSI-edge dmar1
42: 36542 0 0 0 IR-PCI-MSI-edge ahci
43: 1 0 0 0 IR-PCI-MSI-edge xhci_hcd
44: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
45: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
46: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
47: 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
48: 32379 0 0 0 IR-PCI-MSI-edge iwlwifi
49: 22 0 0 0 IR-PCI-MSI-edge mei
50: 25082 0 0 0 IR-PCI-MSI-edge i915@pci:0000:00:02.0
51: 201 0 0 0 IR-PCI-MSI-edge eth0
52: 103 0 0 0 IR-PCI-MSI-edge snd_hda_intel
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 72476 28194 54442 30290 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 30653 32541 2303 1235 Rescheduling interrupts
CAL: 123 151 132 142 Function call interrupts
TLB: 546 848 555 777 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 7 7 7 7 Machine check polls
ERR: 0
MIS: 0
View attachment ".config" of type "text/plain" (84086 bytes)
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