PCI IRQ (routing) problem with mediaGX

PCI IRQ (routing) problem with mediaGX

[Wolfgang Wegner]

[-- Attachment #1: Type: text/plain, Size: 998 bytes --]

Hi,

I am having some strange problems with a special mediaGX device.
There is a BT878 and a DP83815 onboard, and I want to use an
MPEG2 decoder in its only PCI slot, this is why I try to compile
a kernel for it.
The original SuSE 7.2 kernel (2.4.4) works, but every kernel I
tried to compile for it fails because the DP83815 does not get
its interrupt. This is what the driver says:
natsemi.c:v1.07 1/9/2001  Written by Donald Becker <becker@scyld.com>
  http://www.scyld.com/network/natsemi.html
  (unofficial 2.4.x kernel port, version 1.07+LK1.0.8, Aug 07, 2001  Jeff Garzik
, Tjeerd Mulder)
PCI: Found IRQ 10 for device 00:0e.0
IRQ routing conflict for 00:0e.0, have irq 11, want irq 10
eth0: NatSemi DP83815 at 0xc2815000, fb:ff:fb:ff:fb:ff, IRQ 11.
eth0: Transceiver status 0x7869 advertising 05e1.

Attached are lspci -v output and the boot.msg of the non-working kernel
2.4.9-ac12 (sorry, latest I tried...)

Any help (configuration options, patches, hints) welcome! :)

Thanks,
Wolfgang


[-- Attachment #2: lspci --]
[-- Type: text/plain, Size: 2063 bytes --]

00:00.0 Host bridge: Cyrix Corporation PCI Master
	Flags: bus master, medium devsel, latency 0

00:0d.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 02)
	Flags: medium devsel
	Memory at 10000000 (32-bit, prefetchable) [disabled] [size=4K]

00:0d.1 Multimedia controller: Brooktree Corporation Bt878 (rev 02)
	Flags: medium devsel
	Memory at 10001000 (32-bit, prefetchable) [disabled] [size=4K]

00:0e.0 Ethernet controller: National Semiconductor Corporation: Unknown device 0020
	Subsystem: Unknown device fffb:fffb
	Flags: bus master, medium devsel, latency 64, IRQ 11
	I/O ports at f800 [size=256]
	Memory at fedff000 (32-bit, non-prefetchable) [size=4K]
	Expansion ROM at <unassigned> [disabled] [size=64K]
	Capabilities: [40] Power Management version 2

00:10.0 Multimedia controller: Sigma Designs, Inc. REALmagic Hollywood Plus DVD Decoder (rev 02)
	Flags: medium devsel, IRQ 10
	Memory at fec00000 (32-bit, non-prefetchable) [size=1M]
	Capabilities: [40] Power Management version 1

00:12.0 ISA bridge: Cyrix Corporation 5530 Legacy [Kahlua]
	Flags: bus master, medium devsel, latency 0

00:12.1 Bridge: Cyrix Corporation 5530 SMI [Kahlua]
	Flags: medium devsel
	Memory at 40012000 (32-bit, non-prefetchable) [size=256]

00:12.2 IDE interface: Cyrix Corporation 5530 IDE [Kahlua] (prog-if 80 [Master])
	Flags: bus master, medium devsel, latency 0
	I/O ports at fc00 [size=16]

00:12.3 Multimedia audio controller: Cyrix Corporation 5530 Audio [Kahlua]
	Flags: bus master, medium devsel, latency 0
	Memory at 40011000 (32-bit, non-prefetchable) [size=128]

00:12.4 VGA compatible controller: Cyrix Corporation 5530 Video [Kahlua] (prog-if 00 [VGA])
	Subsystem: Cyrix Corporation: Unknown device 0001
	Flags: medium devsel
	Memory at 40800000 (32-bit, non-prefetchable) [size=8M]

00:13.0 USB Controller: Compaq Computer Corporation USB Open Host Controller (rev 06) (prog-if 10 [OHCI])
	Subsystem: Compaq Computer Corporation USB Open Host Controller
	Flags: medium devsel, IRQ 11
	Memory at fedfe000 (32-bit, non-prefetchable) [size=4K]


[-- Attachment #3: boot.msg-2.4.9-ac12 --]
[-- Type: text/plain, Size: 5761 bytes --]

Inspecting /boot/System.map-2.4.9-ac12
Loaded 14790 symbols from /boot/System.map-2.4.9-ac12.
Symbols match kernel version 2.4.9.
No module symbols loaded.
klogd 1.3-3, log source = ksyslog started.
<4>Linux version 2.4.9-ac12 (root@bigmac) (gcc version 2.95.3 20010315 (SuSE)) #1 Thu Sep 27 12:33:34 MEST 2001
<6>BIOS-provided physical RAM map:
<4> BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
<4> BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
<4> BIOS-e820: 00000000000ed000 - 0000000000100000 (reserved)
<4> BIOS-e820: 0000000000100000 - 0000000001d70000 (usable)
<4> BIOS-e820: 0000000001d70000 - 0000000001d7fc00 (ACPI data)
<4> BIOS-e820: 0000000001d7fc00 - 0000000001d80000 (ACPI NVS)
<4> BIOS-e820: 00000000fffed000 - 0000000100000000 (reserved)
<4>On node 0 totalpages: 7536
<4>zone(0): 4096 pages.
<4>zone(1): 3440 pages.
<4>zone(2): 0 pages.
<4>Kernel command line: auto BOOT_IMAGE=neu ro root=303 BOOT_FILE=/boot/bzImage-2.4.9-ac12 vga=0x0301
<6>Initializing CPU#0
<6>Working around Cyrix MediaGX virtual DMA bugs.
<4>Console: colour VGA+ 80x25
<4>Calibrating delay loop... 34.30 BogoMIPS
<4>Memory: 27364k/30144k available (1109k kernel code, 2392k reserved, 313k data, 188k init, 0k highmem)
<4>Checking if this processor honours the WP bit even in supervisor mode... Ok.
<4>Dentry-cache hash table entries: 4096 (order: 3, 32768 bytes)
<4>Inode-cache hash table entries: 2048 (order: 2, 16384 bytes)
<4>Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
<4>Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
<4>Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
<7>CPU: Before vendor init, caps: 00808131 01818131 00000000, vendor = 1
<6>Working around Cyrix MediaGX virtual DMA bugs.
<7>CPU: After vendor init, caps: 00808121 00818131 00000000 00000001
<7>CPU:     After generic, caps: 00808121 00818131 00000000 00000001
<7>CPU:             Common caps: 00808121 00818131 00000000 00000001
<4>CPU: Cyrix MediaGXtm MMXtm Enhanced stepping 03
<6>Checking 'hlt' instruction... OK.
<4>POSIX conformance testing by UNIFIX
<4>mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
<4>mtrr: detected mtrr type: none
<4>PCI: PCI BIOS revision 2.10 entry at 0xfd994, last bus=0
<4>PCI: Using configuration type 1
<4>PCI: Probing PCI hardware
<6>PCI: Using IRQ router NatSemi [1078/0100] at 00:12.0
<6>isapnp: Scanning for PnP cards...
<6>isapnp: No Plug & Play device found
<6>PnP: PNP BIOS installation structure at 0xc00f7ca0
<6>PnP: PNP BIOS version 1.0, entry at f0000:a6be, dseg at 400
<4>PnPBIOS: PNP0c02: request 0xfc10-0xfc80 ok
<4>PnPBIOS: PNP0c02: request 0x480-0x490 ok
<4>PnPBIOS: PNP0c02: request 0xac00-0xac20 ok
<4>PnPBIOS: PNP0c02: request 0xac80-0xac86 ok
<4>PnPBIOS: PNP0c02: request 0xac90-0xaca0 ok
<4>PnPBIOS: PNP0c02: request 0x4d0-0x4d2 ok
<6>PnP: 19 devices detected total
<6>Linux NET4.0 for Linux 2.4
<6>Based upon Swansea University Computer Society NET3.039
<4>ACPI BOOT descriptor is wrong length (39)
<6>Simple Boot Flag extension found and enabled.
<6>apm: BIOS version 1.2 Flags 0x03 (Driver version 1.14)
<4>Starting kswapd v1.8
<4>pty: 256 Unix98 ptys configured
<6>Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI ISAPNP enabled
<6>Non-volatile memory driver v1.1
<4>block: queued sectors max/low 17890kB/5963kB, 64 slots per queue
<6>Uniform Multi-Platform E-IDE driver Revision: 6.31
<4>ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
<4>CS5530: IDE controller on PCI bus 00 dev 92
<4>CS5530: chipset revision 0
<4>CS5530: not 100%% native mode: will probe irqs later
<4>    ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:pio
<4>    ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:pio, hdd:pio
<4>hda: TOSHIBA MK2110MAT, ATA DISK drive
<4>hdb: CD-316E, ATAPI CD/DVD-ROM drive
<4>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
<4>hda: cs5530_set_xfer_mode(UDMA 2)
<6>hda: 4233600 sectors (2168 MB), CHS=525/128/63, UDMA(33)
<4>hdb: ATAPI 16X CD-ROM drive, 128kB Cache
<6>Uniform CD-ROM driver Revision: 3.12
<6>Partition check:
<6> hda: hda1 hda2 hda3 hda4
<6>Floppy drive(s): fd0 is 1.44M
<6>FDC 0 is a National Semiconductor PC87306
<6>usb.c: registered new driver usbdevfs
<6>usb.c: registered new driver hub
<6>uhci.c: :USB Universal Host Controller Interface driver
<6>PCI: Found IRQ 11 for device 00:13.0
<6>usb-ohci.c: USB OHCI at membase 0xc2800000, IRQ 11
<6>usb-ohci.c: usb-00:13.0, Compaq Computer Corporation USB Open Host Controller
<6>usb.c: new USB bus registered, assigned bus number 1
<7>usb.c: kmalloc IF c1d5fc40, numif 1
<7>usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
<7>usb.c: USB device number 1 default language ID 0x0
<6>Product: USB OHCI Root Hub
<6>SerialNumber: c2800000
<6>hub.c: USB hub found
<6>hub.c: 2 ports detected
<7>hub.c: standalone hub
<7>hub.c: ganged power switching
<7>hub.c: global over-current protection
<7>hub.c: Port indicators are not supported
<7>hub.c: power on to power good time: 2ms
<7>hub.c: hub controller current requirement: 0mA
<7>hub.c: port removable status: RR
<7>hub.c: local power source is good
<7>hub.c: no over-current condition exists
<7>hub.c: enabling power on all ports
<7>usb.c: hub driver claimed interface c1d5fc40
<7>usb.c: call_policy add, num 1 -- no FS yet
<6>NET4: Linux TCP/IP 1.0 for NET4.0
<6>IP Protocols: ICMP, UDP, TCP, IGMP
<4>IP: routing cache hash table of 512 buckets, 4Kbytes
<4>TCP: Hash tables configured (established 2048 bind 2048)
<6>NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
<4>VFS: Mounted root (ext2 filesystem) readonly.
<4>Freeing unused kernel memory: 188k freed
<6>Adding Swap: 100792k swap-space (priority -1)
Kernel logging (ksyslog) stopped.
Kernel log daemon terminating.

Re: PCI IRQ (routing) problem with mediaGX

[Alan Cox]

> Attached are lspci -v output and the boot.msg of the non-working kernel
> 2.4.9-ac12 (sorry, latest I tried...)

Does 2.4.9 linus work - it might be the cyrix bits I'd forgotten about 
from the -ac stuff that probably want shooting

Re: PCI IRQ (routing) problem with mediaGX

[Wolfgang Wegner]

Hi again,

sorry for making such a fuzz about such a simple problem... :)

I dropped natsemi.c from 2.4.4 in 2.4.13-ac5, and now network
works flawlessly, although the strange error message still remains:
(dmesg output):
natsemi.c:v1.07 1/9/2001  Written by Donald Becker <becker@scyld.com>
  http://www.scyld.com/network/natsemi.html
  (unofficial 2.4.x kernel port, version 1.0.5, April 17, 2001 Jeff Garzik, Tjeerd Mulder)
PCI: Found IRQ 10 for device 00:0e.0
IRQ routing conflict for 00:0e.0, have irq 11, want irq 10
eth0: NatSemi DP83815 at 0xc281f000, fb:ff:fb:ff:fb:ff, IRQ 11.
eth0: Transceiver status 0x7869 advertising 05e1.

The non-working natsemi.c dmesg output looks like this:
natsemi.c:v1.07 1/9/2001  Written by Donald Becker <becker@scyld.com>
  http://www.scyld.com/network/natsemi.html
  (unofficial 2.4.x kernel port, version 1.07+LK1.0.11, Oct 19, 2001  Jeff Garzi
k, Tjeerd Mulder)
PCI: Found IRQ 10 for device 00:0e.0
IRQ routing conflict for 00:0e.0, have irq 11, want irq 10
eth%d: EEPROM did not reload in 2000 usec.
eth0: NatSemi DP8381[56] at 0xc2820000, fb:ff:fb:ff:fb:ff, IRQ 11.
eth0: Transceiver status 0x7869 advertising 05e1.
eth0: link is back. Enabling watchdog.
eth0: Link changed: Autonegotiation advertising 05e1  partner 0000.
eth0: no link. Disabling watchdog.
eth0: Link wake-up event 00400617
eth0: Link changed: Autonegotiation advertising 05e1  partner 0000.

Note the additional transceiver messages!

The only difference of the first one to original 2.4.4 is the strange
occurence of IRQ10, but at least it works now... :)
(2.4.9 and 2.4.13 without any patches contain the same natsemi.c and
thus do _not_ work either) In case there is anything I can do to
help solve this strange IRQ mapping inconsistency, let me know!

Thanks to everybody!

Wolfgang