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Message-ID: <497E13B8.9040803@itcare.pl>
Date: Mon, 26 Jan 2009 20:49:12 +0100
From: Paweł Staszewski <pstaszewski@...are.pl>
To: Linux Network Development list <netdev@...r.kernel.org>
Subject: DCA/IOAT problem
Hello
Some lspci:
lspci
00:00.0 Host bridge: Intel Corporation Memory Controller Hub (rev 90)
00:02.0 PCI bridge: Intel Corporation PCI Express x8 Port 2-3 (rev 90)
00:04.0 PCI bridge: Intel Corporation PCI Express x16 Port 4-7 (rev 90)
00:08.0 System peripheral: Intel Corporation DMA Engine (rev 90)
00:10.0 Host bridge: Intel Corporation FSB Registers (rev 90)
00:10.1 Host bridge: Intel Corporation FSB Registers (rev 90)
00:10.2 Host bridge: Intel Corporation FSB Registers (rev 90)
00:11.0 Host bridge: Intel Corporation Reserved Registers (rev 90)
00:13.0 Host bridge: Intel Corporation Reserved Registers (rev 90)
00:15.0 Host bridge: Intel Corporation DDR Channel 0 Registers (rev 90)
00:16.0 Host bridge: Intel Corporation DDR Channel 1 Registers (rev 90)
00:1a.0 USB Controller: Intel Corporation USB UHCI Controller #4 (rev 02)
00:1a.7 USB Controller: Intel Corporation USB2 EHCI Controller #2 (rev 02)
00:1c.0 PCI bridge: Intel Corporation PCI Express Port 1 (rev 02)
00:1c.4 PCI bridge: Intel Corporation PCI Express Port 5 (rev 02)
00:1c.5 PCI bridge: Intel Corporation PCI Express Port 6 (rev 02)
00:1d.0 USB Controller: Intel Corporation USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation LPC Interface Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 4 port SATA IDE Controller (rev 02)
00:1f.3 SMBus: Intel Corporation SMBus Controller (rev 02)
00:1f.5 IDE interface: Intel Corporation 2 port SATA IDE Controller (rev 02)
01:00.0 Ethernet controller: Intel Corporation Device 10dd (rev 01)
04:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet
Controller (Copper) (rev 03)
05:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
06:01.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)
and then:
modprobe ioatdma
dmesg:
...
...
IPv4 FIB: Using LC-trie version 0.408
e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
e1000e 0000:05:00.0: irq 1273 for MSI/MSI-X
e1000e 0000:05:00.0: irq 1273 for MSI/MSI-X
0000:05:00.0: eth1: Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
dca service started, version 1.4
ioatdma 0000:00:08.0: can't find IRQ for PCI INT A; probably buggy MP table
ioatdma 0000:00:08.0: setting latency timer to 64
ioatdma 0000:00:08.0: Intel(R) I/OAT DMA Engine found, 4 channels,
device version 0x12, driver version 3.30
ioatdma 0000:00:08.0: irq 1255 for MSI/MSI-X
ioatdma 0000:00:08.0: DCA is disabled in BIOS
ixgbe: eth2: ixgbe_watchdog_task: NIC Link is Up 10 Gbps, Flow Control: None
e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
...
...
lspvi -vvv (for dma engine)
00:08.0 System peripheral: Intel Corporation DMA Engine (rev 90)
Subsystem: Super Micro Computer Inc Device de80
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 1255
Region 0: Memory at fe700000 (64-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [58] Message Signalled Interrupts: Mask- 64bit-
Queue=0/0 Enable+
Address: feeff00c Data: 41b2
Capabilities: [6c] Express (v1) Root Complex Integrated
Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
<64ns, L1 <1us
ExtTag- RBE- FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal+
Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown,
Latency L0 <64ns, L1 <1us
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk-
DLActive- BWMgmt- ABWMgmt-
Kernel driver in use: ioatdma
cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4
CPU5 CPU6 CPU7
0: 81 6 9 7 5
3 9 5 IO-APIC-edge timer
1: 1 0 0 0 1
0 0 0 IO-APIC-edge i8042
2: 0 0 0 0 0
0 0 0 XT-PIC-XT cascade
14: 901 857 867 864 708
674 693 692 IO-APIC-edge ata_piix
15: 686 728 691 703 826
897 876 872 IO-APIC-edge ata_piix
18: 0 0 0 0 0
0 0 0 IO-APIC-fasteoi ata_piix
1255: 1 0 1 0 1
0 1 1 PCI-MSI-edge ioat-msi
1256: 0 0 0 0 0
0 0 0 PCI-MSI-edge eth2:lsc
1257: 857 720 1176 802 960
751 706 841 PCI-MSI-edge eth2:v15-Tx
1258: 958 751 706 841 1176
802 720 859 PCI-MSI-edge eth2:v14-Tx
1259: 1176 802 720 859 706
841 751 958 PCI-MSI-edge eth2:v13-Tx
1260: 706 842 751 959 720
858 802 1175 PCI-MSI-edge eth2:v12-Tx
1261: 720 858 802 1174 751
960 842 706 PCI-MSI-edge eth2:v11-Tx
1262: 751 960 842 706 802
1174 858 720 PCI-MSI-edge eth2:v10-Tx
1263: 802 1174 858 720 842
706 960 751 PCI-MSI-edge eth2:v9-Tx
1264: 842 707 960 751 859
719 1173 802 PCI-MSI-edge eth2:v8-Tx
1265: 814186 813591 813713 814872 814537
816002 812892 814292 PCI-MSI-edge eth2:v7-Rx
1266: 626856 626688 627886 627507 628067
625730 626561 626521 PCI-MSI-edge eth2:v6-Rx
1267: 592474 591312 591741 592107 592214
593218 591271 591386 PCI-MSI-edge eth2:v5-Rx
1268: 558076 559008 557856 558677 557894
556703 557997 558879 PCI-MSI-edge eth2:v4-Rx
1269: 723457 725019 723746 724688 723165
724716 724037 725136 PCI-MSI-edge eth2:v3-Rx
1270: 553387 554096 553204 552603 553078
553587 553838 553769 PCI-MSI-edge eth2:v2-Rx
1271: 603820 605323 605368 602989 604948
604887 606911 604745 PCI-MSI-edge eth2:v1-Rx
1272: 800828 798049 799471 799703 799183
798322 799220 798254 PCI-MSI-edge eth2:v0-Rx
1273: 2868 2894 2970 2808 2863
2803 3167 2860 PCI-MSI-edge eth1
1274: 873 856 882 924 933
904 864 943 PCI-MSI-edge eth0
NMI: 0 0 0 0 0
0 0 0 Non-maskable interrupts
LOC: 40527 41783 40049 40903 42180
39477 49021 47628 Local timer interrupts
RES: 858 58 232 283 89
97 284 435 Rescheduling interrupts
CAL: 52 101 99 88 96
93 92 58 Function call interrupts
TLB: 143 133 486 452 141
159 396 429 TLB shootdowns
SPU: 0 0 0 0 0
0 0 0 Spurious interrupts
ERR: 0
MIS: 0
cat /proc/cpuinfo
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 5999.79
clflush size : 64
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 0
cpu cores : 4
apicid : 4
initial apicid : 4
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6065.40
clflush size : 64
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
initial apicid : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.46
clflush size : 64
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 1
cpu cores : 4
apicid : 5
initial apicid : 5
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.47
clflush size : 64
power management:
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
initial apicid : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.43
clflush size : 64
power management:
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 2
cpu cores : 4
apicid : 6
initial apicid : 6
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.50
clflush size : 64
power management:
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.43
clflush size : 64
power management:
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
stepping : 6
cpu MHz : 2999.898
cache size : 6144 KB
physical id : 1
siblings : 4
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips : 6000.47
clflush size : 64
power management:
I have enabled DCA in my Bios.
So why i have info:
ioatdma 0000:00:08.0: DCA is disabled in BIOS
and:
ls -la /sys/class/dca/
total 0
drwxr-xr-x 2 root root 0 Jan 26 16:21 .
drwxr-xr-x 33 root root 0 Jan 26 16:14 ..
cat /sys/class/dma/dma0chan0/in_use
0
cat /sys/class/dma/dma0chan1/in_use
1
cat /sys/class/dma/dma0chan2/in_use
0
cat /sys/class/dma/dma0chan3/in_use
0
Why DCA is not working (or workink but no info about in ioat)
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