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SubjectRe: IO-APIC + timer doesn't work (was: Linux 2.6.20-rc1)
Linus Torvalds wrote:

> Your dmesg is kind of interesting:
>
> ..TIMER: trying IO-APIC=0 PIN=0 with 8259 IRQ0 enabled(7)APIC error on CPU0: 04(40)
> .. failed
>
> where that APIC error on CPU0 seems to be a "Send accept error" and "Send
> illegal vector" thing. I think we actually got the interrupt there, but
> because we had some APIC setup bug, we didn't accept it properly, and it
> resulted in that "APIC error" thing. Maybe.

I just tried changing the code so the "8259 IRQ0 enabled" case is
tested first and with that it boots fine.


Index: linux-2.6.20-rc1/arch/x86_64/kernel/io_apic.c
===================================================================
--- linux-2.6.20-rc1.orig/arch/x86_64/kernel/io_apic.c 2006-12-17 00:45:57.000000000 +0100
+++ linux-2.6.20-rc1/arch/x86_64/kernel/io_apic.c 2006-12-17 15:39:40.000000000 +0100
@@ -1615,6 +1615,7 @@
*/
apic_write(APIC_LVT0, APIC_LVT_MASKED | APIC_DM_EXTINT);
init_8259A(1);
+ enable_8259A_irq(0);

pin1 = find_isa_irq_pin(0, mp_INT);
apic1 = find_isa_irq_apic(0, mp_INT);


[ 0.000000] Linux version 2.6.20-rc1-amd64 (ranma@melchior) (gcc version 4.1.2 20061028 (prerelease) (Debian 4.1.1-19)) #28 Sun Dec 17 15:40:22 CET 2006
[ 0.000000] Command line: root=/dev/sda5 resume=/dev/sda6 vga=6 apic=verbose apic=verbose ro netconsole=@192.168.8.241/,514@255.255.255.255/
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
[ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 000000003fee0000 (usable)
[ 0.000000] BIOS-e820: 000000003fee0000 - 000000003fee3000 (ACPI NVS)
[ 0.000000] BIOS-e820: 000000003fee3000 - 000000003fef0000 (ACPI data)
[ 0.000000] BIOS-e820: 000000003fef0000 - 000000003ff00000 (reserved)
[ 0.000000] BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
[ 0.000000] Entering add_active_range(0, 0, 159) 0 entries of 256 used
[ 0.000000] Entering add_active_range(0, 256, 261856) 1 entries of 256 used
[ 0.000000] end_pfn_map = 1048576
[ 0.000000] DMI 2.3 present.
[ 0.000000] ACPI: RSDP (v000 Nvidia ) @ 0x00000000000f7ce0
[ 0.000000] ACPI: RSDT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x000000003fee3040
[ 0.000000] ACPI: FADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x000000003fee30c0
[ 0.000000] ACPI: SSDT (v001 PTLTD POWERNOW 0x00000001 LTP 0x00000001) @ 0x000000003feec2c0
[ 0.000000] ACPI: MCFG (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x000000003feec400
[ 0.000000] ACPI: MADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x000000003feec200
[ 0.000000] ACPI: DSDT (v001 NVIDIA AWRDACPI 0x00001000 MSFT 0x0100000e) @ 0x0000000000000000
[ 0.000000] Entering add_active_range(0, 0, 159) 0 entries of 256 used
[ 0.000000] Entering add_active_range(0, 256, 261856) 1 entries of 256 used
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0 -> 4096
[ 0.000000] DMA32 4096 -> 1048576
[ 0.000000] Normal 1048576 -> 1048576
[ 0.000000] early_node_map[2] active PFN ranges
[ 0.000000] 0: 0 -> 159
[ 0.000000] 0: 256 -> 261856
[ 0.000000] On node 0 totalpages: 261759
[ 0.000000] DMA zone: 56 pages used for memmap
[ 0.000000] DMA zone: 1356 pages reserved
[ 0.000000] DMA zone: 2587 pages, LIFO batch:0
[ 0.000000] DMA32 zone: 3524 pages used for memmap
[ 0.000000] DMA32 zone: 254236 pages, LIFO batch:31
[ 0.000000] Normal zone: 0 pages used for memmap
[ 0.000000] Nvidia board detected. Ignoring ACPI timer override.
[ 0.000000] If you got timer trouble try acpi_use_timer_override
[ 0.000000] ACPI: PM-Timer IO Port: 0x1008
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[ 0.000000] Processor #0 (Bootup-CPU)
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled)
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[ 0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 2, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: IRQ14 used by override.
[ 0.000000] ACPI: IRQ15 used by override.
[ 0.000000] Setting APIC routing to flat
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] mapped APIC to ffffffffff5fd000 ( fee00000)
[ 0.000000] mapped IOAPIC to ffffffffff5fc000 (00000000fec00000)
[ 0.000000] Nosave address range: 000000000009f000 - 00000000000a0000
[ 0.000000] Nosave address range: 00000000000a0000 - 00000000000f0000
[ 0.000000] Nosave address range: 00000000000f0000 - 0000000000100000
[ 0.000000] Allocating PCI resources starting at 40000000 (gap: 3ff00000:b0100000)
[ 0.000000] Built 1 zonelists. Total pages: 256823
[ 0.000000] Kernel command line: root=/dev/sda5 resume=/dev/sda6 vga=6 apic=verbose apic=verbose ro netconsole=@192.168.8.241/,514@255.255.255.255/
[ 0.000000] netconsole: local port 6665
[ 0.000000] netconsole: local IP 192.168.8.241
[ 0.000000] netconsole: interface eth0
[ 0.000000] netconsole: remote port 514
[ 0.000000] netconsole: remote IP 255.255.255.255
[ 0.000000] netconsole: remote ethernet address ff:ff:ff:ff:ff:ff
[ 0.000000] Initializing CPU#0
[ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes)
[ 27.616056] time.c: Using 3.579545 MHz WALL PM GTOD PIT/TSC timer.
[ 27.616058] time.c: Detected 2009.285 MHz processor.
[ 27.621535] Console: colour VGA+ 80x60
[ 27.624157] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 27.624996] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 27.625240] Checking aperture...
[ 27.625347] CPU 0: aperture @ b2c2000000 size 32 MB
[ 27.625454] Aperture too small (32 MB)
[ 27.630247] No AGP bridge found
[ 27.638099] Memory: 1025356k/1047424k available (3261k kernel code, 21436k reserved, 1445k data, 200k init)
[ 27.719244] Calibrating delay using timer specific routine.. 4022.22 BogoMIPS (lpj=6701161)
[ 27.719489] Mount-cache hash table entries: 256
[ 27.719665] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
[ 27.719774] CPU: L2 Cache: 512K (64 bytes/line)
[ 27.719899] CPU: AMD Athlon(tm) 64 Processor 3200+ stepping 02
[ 27.720052] ACPI: Core revision 20060707
[ 27.727794] enabled ExtINT on CPU#0
[ 27.727901] ESR value after enabling vector: 00000000, after 00000004
[ 27.728238] ENABLING IO-APIC IRQs
[ 27.728345] init IO_APIC IRQs
[ 27.728417] IO-APIC (apicid-pin) 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23 not connected.
[ 27.728548] ..TIMER: trying IO-APIC=0 PIN=0 with 8259 IRQ0 disabled<6>Using local APIC timer interrupts.
^^^^^^^^
really
enabled
[ 27.811447] result 12558047
[ 27.811553] Detected 12.558 MHz APIC timer.
HTH,

--
Tobias PGP: http://9ac7e0bc.uguu.de
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