This multi-vendor family of "SuperIO" chips is racy and weird, and difficult to probe directly. They require bankswitching registers, with an unclear locking regime against the possibility of a system BMC or SMI also performing the same actions. In general, the code falls through to a device which is a subset of the , and there isn't too much chaos. This area is best-effort, be happy you have the sensors.
Jens A. Griepentrog <[email protected]> wrote: > Dear Listeners, > > Just for curiosity: Today I have recognized a surprising difference > in dmesg and sysctl hw.sensors output after two times of booting the > same kernel on the same machine: After the first boot, I was surprised > to see (for the first time as far as I remember) the lines > ... > lm0 at isa0 port 0x290/8: NCT6776F > ... > hw.sensors.lm0.fan0=1467 RPM > hw.sensors.lm0.fan1=1350 RPM > hw.sensors.lm0.fan2=1454 RPM > hw.sensors.lm0.fan3=0 RPM > hw.sensors.lm0.fan4=0 RPM > ... > with respect to the lm sensor detection instead of the usual lines > ... > lm0 at isa0 port 0x290/8: W83627DHG > ... > hw.sensors.lm0.fan0=1562 RPM > hw.sensors.lm0.fan1=1454 RPM > hw.sensors.lm0.fan2=1562 RPM > ... > six ours later after the second boot. Here, you find the full > differences and one instance of the dmesg and sysctl.sensors output: > > $ diff dmesg-70.log dmesg-71.log > > 4c4 > < avail mem = 16627154944 (15856MB) > --- > > avail mem = 16627150848 (15856MB) > 18c18 > < cpu0: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.98 MHz > --- > > cpu0: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.99 MHz > 21c21 > < acpitimer0: recalibrated TSC frequency 1866735229 Hz > --- > > acpitimer0: recalibrated TSC frequency 1866741453 Hz > 45c45 > < acpihpet0: recalibrated TSC frequency 1866743200 Hz > --- > > acpihpet0: recalibrated TSC frequency 1866741920 Hz > 141c141 > < lm0 at isa0 port 0x290/8: NCT6776F > --- > > lm0 at isa0 port 0x290/8: W83627DHG > 176,188c176,186 > < hw.sensors.cpu0.temp0=30.00 degC > < hw.sensors.sdtemp0.temp0=36.50 degC > < hw.sensors.sdtemp1.temp0=34.50 degC > < hw.sensors.sdtemp2.temp0=35.50 degC > < hw.sensors.sdtemp3.temp0=36.75 degC > < hw.sensors.lm0.temp0=28.00 degC > < hw.sensors.lm0.temp1=28.50 degC > < hw.sensors.lm0.temp2=29.00 degC > < hw.sensors.lm0.fan0=1467 RPM > < hw.sensors.lm0.fan1=1350 RPM > < hw.sensors.lm0.fan2=1454 RPM > < hw.sensors.lm0.fan3=0 RPM > < hw.sensors.lm0.fan4=0 RPM > --- > > hw.sensors.cpu0.temp0=32.00 degC > > hw.sensors.sdtemp0.temp0=44.25 degC > > hw.sensors.sdtemp1.temp0=39.50 degC > > hw.sensors.sdtemp2.temp0=42.50 degC > > hw.sensors.sdtemp3.temp0=44.75 degC > > hw.sensors.lm0.temp0=31.00 degC > > hw.sensors.lm0.temp1=31.00 degC > > hw.sensors.lm0.temp2=33.00 degC > > hw.sensors.lm0.fan0=1562 RPM > > hw.sensors.lm0.fan1=1454 RPM > > hw.sensors.lm0.fan2=1562 RPM > > $ cat dmesg-70.log > OpenBSD 6.3 (GENERIC.MP) #6: Tue Jul 24 13:40:48 CEST 2018 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > real mem = 17154113536 (16359MB) > avail mem = 16627154944 (15856MB) > mpath0 at root > scsibus0 at mpath0: 256 targets > mainbus0 at root > bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xf06f0 (62 entries) > bios0: vendor American Megatrends Inc. version "0705" date 06/29/2010 > bios0: ASUSTeK Computer INC. P7F-M WS > acpi0 at bios0: rev 2 > acpi0: sleep states S0 S1 S3 S4 S5 > acpi0: tables DSDT FACP APIC MCFG OEMB HPET SSDT > acpi0: wakeup devices BR1E(S4) UAR1(S4) PS2K(S4) EUSB(S4) USB0(S4) > USB1(S4) USB2(S4) USB3(S4) USBE(S4) USB4(S4) USB5(S4) USB6(S4) > BR21(S4) BR22(S4) BR23(S4) P0P1(S4) [...] > acpitimer0 at acpi0: 3579545 Hz, 24 bits > acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat > cpu0 at mainbus0: apid 0 (boot processor) > cpu0: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.98 MHz > cpu0: > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,MELTDOWN > cpu0: 256KB 64b/line 8-way L2 cache > acpitimer0: recalibrated TSC frequency 1866735229 Hz > cpu0: smt 0, core 0, package 0 > mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges > cpu0: apic clock running at 133MHz > cpu0: mwait min=64, max=64, C-substates=0.2.1.1, IBE > cpu1 at mainbus0: apid 2 (application processor) > cpu1: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.73 MHz > cpu1: > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,MELTDOWN > cpu1: 256KB 64b/line 8-way L2 cache > cpu1: smt 0, core 1, package 0 > cpu2 at mainbus0: apid 4 (application processor) > cpu2: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.73 MHz > cpu2: > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,MELTDOWN > cpu2: 256KB 64b/line 8-way L2 cache > cpu2: smt 0, core 2, package 0 > cpu3 at mainbus0: apid 6 (application processor) > cpu3: Intel(R) Xeon(R) CPU L3426 @ 1.87GHz, 1866.73 MHz > cpu3: > FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,SENSOR,MELTDOWN > cpu3: 256KB 64b/line 8-way L2 cache > cpu3: smt 0, core 3, package 0 > ioapic0 at mainbus0: apid 7 pa 0xfec00000, version 20, 24 pins > , remapped to apid 7 > acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255 > acpihpet0 at acpi0: 14318179 Hz > acpihpet0: recalibrated TSC frequency 1866743200 Hz > acpiprt0 at acpi0: bus 0 (PCI0) > acpiprt1 at acpi0: bus 7 (BR1E) > acpiprt2 at acpi0: bus -1 (BR21) > acpiprt3 at acpi0: bus -1 (BR22) > acpiprt4 at acpi0: bus -1 (BR23) > acpiprt5 at acpi0: bus -1 (P0P1) > acpiprt6 at acpi0: bus 1 (P0P3) > acpiprt7 at acpi0: bus -1 (P0P4) > acpiprt8 at acpi0: bus -1 (P0P5) > acpiprt9 at acpi0: bus -1 (P0P6) > acpiprt10 at acpi0: bus 2 (BR20) > acpiprt11 at acpi0: bus 5 (BR26) > acpiprt12 at acpi0: bus 6 (BR27) > acpicpu0 at acpi0: !C3(350@17 mwait.1@0x20), !C3(500@17 mwait.1@0x10), > C1(1000@1 mwait.1), PSS > acpicpu1 at acpi0: !C3(350@17 mwait.1@0x20), !C3(500@17 mwait.1@0x10), > C1(1000@1 mwait.1), PSS > acpicpu2 at acpi0: !C3(350@17 mwait.1@0x20), !C3(500@17 mwait.1@0x10), > C1(1000@1 mwait.1), PSS > acpicpu3 at acpi0: !C3(350@17 mwait.1@0x20), !C3(500@17 mwait.1@0x10), > C1(1000@1 mwait.1), PSS > acpibtn0 at acpi0: PWRB > ipmi at mainbus0 not configured > cpu0: Enhanced SpeedStep 1866 MHz: speeds: 1868, 1867, 1733, 1600, > 1467, 1333, 1200 MHz > pci0 at mainbus0 bus 0 > pchb0 at pci0 dev 0 function 0 "Intel Core DMI" rev 0x11 > ppb0 at pci0 dev 3 function 0 "Intel Core PCIE" rev 0x11: msi > pci1 at ppb0 bus 1 > radeondrm0 at pci1 dev 0 function 0 "ATI Radeon HD 6450" rev 0x00 > drm0 at radeondrm0 > radeondrm0: msi > azalia0 at pci1 dev 0 function 1 "ATI Radeon HD 6400 Audio" rev 0x00: msi > azalia0: no supported codecs > "Intel Core Management" rev 0x11 at pci0 dev 8 function 0 not configured > "Intel Core Scratch" rev 0x11 at pci0 dev 8 function 1 not configured > "Intel Core Control" rev 0x11 at pci0 dev 8 function 2 not configured > "Intel Core Misc" rev 0x11 at pci0 dev 8 function 3 not configured > "Intel Core QPI Link" rev 0x11 at pci0 dev 16 function 0 not configured > "Intel Core QPI Routing" rev 0x11 at pci0 dev 16 function 1 not configured > ehci0 at pci0 dev 26 function 0 "Intel 3400 USB" rev 0x05: apic 7 int 16 > usb0 at ehci0: USB revision 2.0 > uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev > 2.00/1.00 addr 1 > azalia1 at pci0 dev 27 function 0 "Intel 3400 HD Audio" rev 0x05: msi > azalia1: codecs: Realtek ALC888 > audio0 at azalia1 > ppb1 at pci0 dev 28 function 0 "Intel 3400 PCIE" rev 0x05: msi > pci2 at ppb1 bus 2 > ppb2 at pci0 dev 28 function 4 "Intel 3400 PCIE" rev 0x05 > pci3 at ppb2 bus 3 > ppb3 at pci0 dev 28 function 5 "Intel 3400 PCIE" rev 0x05 > pci4 at ppb3 bus 4 > ppb4 at pci0 dev 28 function 6 "Intel 3400 PCIE" rev 0x05 > pci5 at ppb4 bus 5 > em0 at pci5 dev 0 function 0 "Intel 82574L" rev 0x00: msi, address > bc:ae:c5:05:5b:71 > ppb5 at pci0 dev 28 function 7 "Intel 3400 PCIE" rev 0x05 > pci6 at ppb5 bus 6 > em1 at pci6 dev 0 function 0 "Intel 82574L" rev 0x00: msi, address > bc:ae:c5:05:5b:b1 > ehci1 at pci0 dev 29 function 0 "Intel 3400 USB" rev 0x05: apic 7 int 23 > usb1 at ehci1: USB revision 2.0 > uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev > 2.00/1.00 addr 1 > ppb6 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xa5 > pci7 at ppb6 bus 7 > pcib0 at pci0 dev 31 function 0 "Intel 3420 LPC" rev 0x05 > ahci0 at pci0 dev 31 function 2 "Intel 3400 AHCI" rev 0x05: msi, AHCI 1.3 > ahci0: port 0: 3.0Gb/s > ahci0: port 1: 3.0Gb/s > ahci0: port 2: 3.0Gb/s > ahci0: port 3: 3.0Gb/s > ahci0: port 4: 1.5Gb/s > ahci0: port 5: 1.5Gb/s > scsibus1 at ahci0: 32 targets > sd0 at scsibus1 targ 0 lun 0: <ATA, SSDSA2SH064G1GC, 045C> SCSI3 > 0/direct fixed naa.5001517959470944 > sd0: 61057MB, 512 bytes/sector, 125045424 sectors > sd1 at scsibus1 targ 1 lun 0: <ATA, SSDSA2SH032G1GN, 045C> SCSI3 > 0/direct fixed naa.50015179594773ba > sd1: 30517MB, 512 bytes/sector, 62500000 sectors > sd2 at scsibus1 targ 2 lun 0: <ATA, INTEL SSDSA2VP02, 2CV1> SCSI3 > 0/direct fixed naa.50015179595d23dc > sd2: 19087MB, 512 bytes/sector, 39091248 sectors, thin > sd3 at scsibus1 targ 3 lun 0: <ATA, INTEL SSDSA2VP02, 2CV1> SCSI3 > 0/direct fixed naa.50015179595d23a4 > sd3: 19087MB, 512 bytes/sector, 39091248 sectors, thin > cd0 at scsibus1 targ 4 lun 0: <Optiarc, DVD RW AD-7260S, 1.00> ATAPI > 5/cdrom removable > cd1 at scsibus1 targ 5 lun 0: <MATSHITA, LKM-KB23, A232> ATAPI 5/cdrom > removable > ichiic0 at pci0 dev 31 function 3 "Intel 3400 SMBus" rev 0x05: apic 7 int 18 > iic0 at ichiic0 > sdtemp0 at iic0 addr 0x18: stts424e02 > sdtemp1 at iic0 addr 0x19: stts2002 > sdtemp2 at iic0 addr 0x1a: stts424e02 > sdtemp3 at iic0 addr 0x1b: stts2002 > spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM registered ECC PC3-10600 > with thermal sensor > spdmem1 at iic0 addr 0x51: 4GB DDR3 SDRAM registered ECC PC3-10600 > with thermal sensor > spdmem2 at iic0 addr 0x52: 4GB DDR3 SDRAM registered ECC PC3-10600 > with thermal sensor > spdmem3 at iic0 addr 0x53: 4GB DDR3 SDRAM registered ECC PC3-10600 > with thermal sensor > isa0 at pcib0 > isadma0 at isa0 > com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo > pckbc0 at isa0 port 0x60/5 irq 1 irq 12 > pckbd0 at pckbc0 (kbd slot) > wskbd0 at pckbd0: console keyboard > pcppi0 at isa0 port 0x61 > spkr0 at pcppi0 > lm0 at isa0 port 0x290/8: NCT6776F > vmm0 at mainbus0: VMX/EPT > uhub2 at uhub0 port 1 configuration 1 interface 0 "Intel Rate Matching > Hub" rev 2.00/0.00 addr 2 > uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching > Hub" rev 2.00/0.00 addr 2 > umass0 at uhub3 port 1 configuration 1 interface 0 "Generic Mass > Storage" rev 2.00/1.03 addr 3 > umass0: using SCSI over Bulk-Only > scsibus2 at umass0: 2 targets, initiator 0 > sd4 at scsibus2 targ 1 lun 0: <Generic, Flash Disk, 8.07> SCSI2 > 0/direct removable > sd4: 15978MB, 512 bytes/sector, 32722944 sectors > uhidev0 at uhub3 port 2 configuration 1 interface 0 "Logitech Optical > USB Mouse" rev 2.00/3.40 addr 4 > uhidev0: iclass 3/1 > ums0 at uhidev0: 3 buttons, Z dir > wsmouse0 at ums0 mux 0 > umass1 at uhub3 port 4 configuration 1 interface 0 "Generic Mass > Storage Device" rev 2.00/1.00 addr 5 > umass1: using SCSI over Bulk-Only > scsibus3 at umass1: 2 targets, initiator 0 > sd5 at scsibus3 targ 1 lun 0: <Generic-, SD/MMC, 1.00> SCSI0 0/direct > removable > sd6 at scsibus3 targ 1 lun 1: <Generic-, Compact Flash, 1.01> SCSI0 > 0/direct removable > sd7 at scsibus3 targ 1 lun 2: <Generic-, SM/xD-Picture, 1.02> SCSI0 > 0/direct removable > sd8 at scsibus3 targ 1 lun 3: <Generic-, MS/MS-Pro, 1.03> SCSI0 > 0/direct removable > uhidev1 at uhub3 port 4 configuration 1 interface 1 "Generic Mass > Storage Device" rev 2.00/1.00 addr 5 > uhidev1: iclass 3/0, 4 report ids > uhid0 at uhidev1 reportid 4: input=7, output=0, feature=0 > uftdi0 at uhub3 port 5 configuration 1 interface 0 "FTDI FT232R USB > UART" rev 2.00/6.00 addr 6 > ucom0 at uftdi0 portno 1 > uftdi1 at uhub3 port 6 configuration 1 interface 0 "FTDI FT232R USB > UART" rev 2.00/6.00 addr 7 > ucom1 at uftdi1 portno 1 > vscsi0 at root > scsibus4 at vscsi0: 256 targets > softraid0 at root > scsibus5 at softraid0: 256 targets > root on sd0a (78faa8282eb6f8fa.a) swap on sd0b dump on sd0b > radeondrm0: 1600x1200, 32bpp > wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0 > wsdisplay0: screen 1-5 added (std, vt100 emulation) > hw.sensors.cpu0.temp0=30.00 degC > hw.sensors.sdtemp0.temp0=36.50 degC > hw.sensors.sdtemp1.temp0=34.50 degC > hw.sensors.sdtemp2.temp0=35.50 degC > hw.sensors.sdtemp3.temp0=36.75 degC > hw.sensors.lm0.temp0=28.00 degC > hw.sensors.lm0.temp1=28.50 degC > hw.sensors.lm0.temp2=29.00 degC > hw.sensors.lm0.fan0=1467 RPM > hw.sensors.lm0.fan1=1350 RPM > hw.sensors.lm0.fan2=1454 RPM > hw.sensors.lm0.fan3=0 RPM > hw.sensors.lm0.fan4=0 RPM > hw.sensors.lm0.volt0=0.90 VDC (VCore) > hw.sensors.lm0.volt1=11.40 VDC (+12V) > hw.sensors.lm0.volt2=3.36 VDC (+3.3V) > hw.sensors.lm0.volt3=3.36 VDC (+3.3V) > hw.sensors.lm0.volt4=-6.66 VDC (-12V) > hw.sensors.lm0.volt5=1.66 VDC > hw.sensors.lm0.volt6=1.49 VDC > hw.sensors.lm0.volt7=3.33 VDC (3.3VSB) > hw.sensors.lm0.volt8=1.61 VDC (VBAT) > > With best regards, > Jens >
