Hi, I'm a newbie at this, so please bear with a potentially stupid question: When Linux boots up, it does not seem to initialize the P2P bridge (21154). Here's the relevant dmesg (with DEBUG turned on in arch/ppc/kernel/pci.c) and the output of lspci. I'm running 2.5.8-pre3 from the mvista.com rsync server. I'm not able to see any devices downstream of the 21154. If anyone has words of wisdom about how to enable the P2P bridge, I'd greatly appreciate hearing them. Thanks, Rajappa Total memory = 64MB; using 128kB for hash table (at c0220000) Linux version 2.5.8-pre3 (rsi@pluto) (gcc version 2.95.2 19991024 (release)) #7 Mon May 20 17:57:07 PDT 2002 PReP architecture On node 0 totalpages: 16384 zone(0): 16384 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: console=ttyS0,9600 \ ip=172.19.217.210:172.19.216.101:172.19. \ 216.3:255.255.254.0 nfsroot=172.19.216.101:/usr/exports/mcp750,rw OpenPIC Version 1.3 (2 CPUs and 16 IRQ sources) at effde000 OpenPIC timer frequency is 8.333848 MHz time_init: decrementer frequency = 16.666950 MHz Calibrating delay loop... 465.30 BogoMIPS Memory: 62520k available (1240k kernel code, 628k data, 232k init, 0k highmem) Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes) Inode-cache hash table entries: 4096 (order: 3, 32768 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 16384 (order: 4, 65536 bytes) POSIX conformance testing by UNIFIX Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket PCI: Probing PCI hardware PCI:00:00.0 Resource 0 [00000000-ffffffff] is unassigned Fixup res 1 (200) of dev 00:00.0: 3c000000 -> fc000000 Fixup res 1 (200) of dev 00:0e.0: 3bffff00 -> fbffff00 PCI:00:0e.0 Resource 6 [fffc0000-ffffffff] is unassigned Unknown bridge resource 0: assuming transparent Unknown bridge resource 1: assuming transparent PCI: Unable to handle 64-bit address space for Setting PCI interrupts for a "Mesquite cPCI (MCP750)" PCI: bridge rsrc 0..ffffff (100), parent c01717bc PCI: reparented dma1 [0..1f] under PCI host bridge PCI: reparented 8259 (master) [20..21] under PCI host bridge PCI: reparented timer [40..5f] under PCI host bridge PCI: reparented dma page reg [80..8f] under PCI host bridge PCI: reparented 8259 (slave) [a0..a1] under PCI host bridge PCI: reparented dma2 [c0..df] under PCI host bridge PCI: reparented 8259 edge control [4d0..4d1] under PCI host bridge PCI: bridge rsrc 80000000..beffffff (200), parent c01717d8 PCI:00:00.0: Resource 1: fc000000-fc03ffff (f=200) PCI: Cannot allocate resource region 1 of device 00:00.0 PCI:00:0b.1: Resource 0: 0000fff0-0000fff7 (f=101) PCI:00:0b.1: Resource 1: 0000ffec-0000ffef (f=101) PCI:00:0b.1: Resource 2: 0000ffe0-0000ffe7 (f=101) PCI:00:0b.1: Resource 3: 0000ffdc-0000ffdf (f=101) PCI:00:0b.1: Resource 4: 0000ffc0-0000ffcf (f=101) PCI:00:0b.2: Resource 4: 0000ffa0-0000ffbf (f=101) PCI:00:0e.0: Resource 0: 0fffff00-0fffff7f (f=101) PCI: Cannot allocate resource region 0 of device 00:0e.0 PCI:00:0e.0: Resource 1: fbffff00-fbffff7f (f=200) PCI: Cannot allocate resource region 1 of device 00:0e.0 PCI: moved device 00:0e.0 resource 0 (101) to 1000 PCI: moved device 00:0e.0 resource 1 (200) to c0000000 Activating ISA DMA hang workarounds. isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found Starting kswapd BIO: pool of 256 setup, 14Kb (56 bytes/bio) biovec: init pool 0, 1 entries, 12 bytes biovec: init pool 1, 4 entries, 48 bytes biovec: init pool 2, 16 entries, 192 bytes biovec: init pool 3, 64 entries, 768 bytes biovec: init pool 4, 128 entries, 1536 bytes biovec: init pool 5, 256 entries, 3072 bytes devfs: v1.13 (20020406) Richard Gooch (rgooch@atnf.csiro.au) devfs: boot_options: 0x0 Installing knfsd (copyright (C) 1996 okir@monad.swb.de). initialize_kbd: Keyboard reset failed, no ACK keyboard: Timeout - AT keyboard not present?(ed) keyboard: Timeout - AT keyboard not present?(f4) pty: 256 Unix98 ptys configured Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI en abled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A block: 256 slots per queue, batch=32 RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize loop: loaded (max 8 devices) Linux Tulip driver version 1.1.12 (Mar 07, 2002) tulip0: EEPROM default media type Autosense. tulip0: Index #0 - Media MII (#11) described by a 21140 MII PHY (1) block. tulip0: MII transceiver #1 config 3000 status 7809 advertising 01e1. eth0: Digital DS21140 Tulip rev 34 at 0x1000, 00:01:AF:02:A4:C0, IRQ 18. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 4096 bind 4096) IP-Config: Complete: device=eth0, addr=172.19.217.210, mask=255.255.254.0, gw=172.19.216.3, host=172.19.217.210, domain=, nis-domain=(none), bootserver=172.19.216.101, rootserver=172.19.216.101, rootpath= NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. Looking up port of RPC 100003/2 on 172.19.216.101 eth0: Setting half-duplex based on MII#1 link partner capability of 0021. Looking up port of RPC 100005/1 on 172.19.216.101 VFS: Mounted root (nfs filesystem). Freeing unused kernel memory: 232k init 24k pmac 4k chrp 4k openfirmware And the output of lspci -v 00:00.0 Host bridge: Motorola Raven (rev 05) Flags: bus master, medium devsel, latency 0 I/O ports at <unassigned> [disabled] Memory at <ignored> (32-bit, non-prefetchable) [size=256K] 00:0b.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] ( rev 41) Flags: bus master, stepping, medium devsel, latency 0 00:0b.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06) (prog-if 8 f [Master SecP SecO PriP PriO]) Flags: bus master, stepping, medium devsel, latency 0 I/O ports at fff0 [size=8] I/O ports at ffec [size=4] I/O ports at ffe0 [size=8] I/O ports at ffdc [size=4] I/O ports at ffc0 [size=16] 00:0b.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 02) (prog-if 00 [UH CI]) Subsystem: Unknown device 0925:1234 Flags: bus master, medium devsel, latency 22, IRQ 11 I/O ports at ffa0 [size=32] 00:0b.3 Non-VGA unclassified device: VIA Technologies, Inc. VT82C586B ACPI (rev 10) Flags: medium devsel 00:0e.0 Ethernet controller: Digital Equipment Corporation DECchip 21140 [Faster Net] (rev 22) Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at 1000 [size=128] Memory at 80000000 (32-bit, non-prefetchable) [size=128] Expansion ROM at <unassigned> [disabled] [size=256K] 00:14.0 PCI bridge: Digital Equipment Corporation DECchip 21154 (rev 02) (prog-i f 00 [Normal decode]) Flags: bus master, medium devsel, latency 128 Bus: primary=00, secondary=01, subordinate=01, sec-latency=128 Capabilities: [dc] Power Management version 1 -- [off-list ref] a.k.a. Rajappa Iyer. They also surf who stand in the waves. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
Bridge initialization on MCP750
Started by Rajappa Iyer on May 21, 2002
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