On Thursday, January 06, 2011 5:32:08 pm Arno J. Klaassen wrote: > John Baldwin <j...@freebsd.org> writes: > > > On Wednesday, January 05, 2011 4:39:24 pm Arno J. Klaassen wrote: > >> > >> Hello, > >> > >> I have (a long-lasting) problem to get hpet attached to a Tyan S3992-E > >> MB. My last known working kernel is 7.1-PRERELEASE Sep 2 2008" , I > >> rarely cared about this board for a while... > >> > >> At that time the dmesg said : > >> > >> > >> acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff > >> on acpi0 > >> Timecounter "HPET" frequency 25000000 Hz quality 900 > >> > >> now it says (debug.acpi.hpet_test="1", debug.acpi.layer="ACPI_TIMER", > >> debug.acpi.level="ACPI_LV_ALL_EXCEPTIONS" enabled) : > >> > >> hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed03fff on > >> acpi0 > >> hpet0: vendor 0xffff, rev 0xff, 232831Hz 64bit, 32 timers, legacy route > >> hpet0: t0: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t1: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t2: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t3: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t4: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t5: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t6: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t7: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t8: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t9: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t10: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t11: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t12: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t13: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t14: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t15: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t16: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t17: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t18: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t19: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t20: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t21: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t22: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t23: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t24: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t25: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t26: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t27: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t28: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t29: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t30: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: t31: irqs 0xffffffff (31), MSI, 64bit, periodic > >> hpet0: 0.000000000: 4294967295 ... 4294967295 = 0 > >> hpet0: time per call: 0 ns > >> hpet0: HPET never increments, disabling > >> device_attach: hpet0 attach returned 6 > >> > >> > >> Some things strike me : > >> > >> 'vendor 0xffff, rev 0xf' and '4294967295 (== 0xffffffff)' as well > >> as 232831Hz > >> > >> the change in iomem range : > >> > >> OK : iomem 0xfed00000-0xfed003ff > >> KO : iomem 0xfed00000-0xfed03fff > >> ^^^^ > >> > >> I can provide full dmesg and/or other extra needed info. > > > > Arno sent me his acpidump which includes this: > > > > Device (HPET) > > { > > Name (_HID, EisaId ("PNP0103")) > > Name (_UID, 0x34) > > Method (_STA, 0, NotSerialized) > > { > > Return (0x0F) > > } > > > > Method (_CRS, 0, NotSerialized) > > { > > Return (ResourceTemplate () > > { > > Memory32Fixed (ReadWrite, > > 0xFED00000, // Address Base > > 0x00004000, // Address Length > > ) > > }) > > } > > } > > > > So it does look like we are doing what the DSDT tells us in terms > > of the memory address. > > yop. That said, I made yet another copy-paste error: the last known > working kernel is 8.0-CURRENT Mar 1 2009 and the hpet says : > > acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff > on acpi0 > Timecounter "HPET" frequency 14318180 Hz quality 900 > > [only the frequency differs, the memory range indeed then was reported as > 0x400 and not 0x4000 ] > > > Arno, are there any BIOS options that mention the HPET or have you updated > > your BIOS since you booted the 7.1 kernel? > > yes .. I now use BIOS 1.06 released 06/09/09. > Can I somehow 'overide' the bios and force the driver to use 0X400 as > 'Address Length' in order to test if that makes the driver attach again?
Changing the length wouldn't make a difference as we would still read the same registers since the start address is identical. I think the length is symptomatic of the BIOS doing something differently that has disabled the HPET. -- John Baldwin _______________________________________________ freebsd-acpi@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-acpi To unsubscribe, send any mail to "freebsd-acpi-unsubscr...@freebsd.org"