Hi, On Wed, May 18, 2011 at 7:44 PM, Bjorn Helgaas <bhelg...@google.com> wrote: > On Wed, May 18, 2011 at 4:02 AM, Prashant Bhole > <prashantsmailcen...@gmail.com> wrote: >> On Mon, May 2, 2011 at 10:21 AM, Prashant Bhole >> <prashantsmailcen...@gmail.com> wrote: >>> >>> Hi, >>> I have a custom made powerpc 460EX board. On that board u-boot >>> can see a PCI device but Linux kernel cannot see it. What could be the >>> problem? >>> >>> On u-boot "pci 2" commands displays following device: >>> Scanning PCI devices on bus 2 >>> BusDevFun VendorId DeviceId Device Class Sub-Class >>> _____________________________________________________________ >>> 02.00.00 0x1000 0x0072 Mass storage controller 0x00 >>> >>> And when the kernel is booted, there is only one pci device (bridge): >>> #ls /sys/bus/pci/devices >>> 0000:80:00.0 >>> >> >> I am still facing in this problem. >> >> a call to pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l) returns >> positive value in the function pci_scan_device(), which means VENDOR_ID >> reading >> failed. I could not find the reason. Any hints? > > Hmm... probably powerpc-related, so I added linuxppc-dev. > > My guess would be that Linux didn't find the host bridge to the > hierarchy containing bus 2. I would guess the host bridge info is > supposed to come from OF. More information, like the complete u-boot > PCI scan and the kernel dmesg log, would be useful. And maybe u-boot > has a way to dump the OF device tree? >
I am not using OF for booting u-boot. OF is being used for booting the kernel. Not sure whether the host bridge info is coming from OF. Device tree has two pciex nodes with following property: compatible = "ibm,plb-pciex-460ex", "ibm,plb-pciex" I think that node represents a pciex bus not the bridge. I have attached u-boot, dmesg logs and device tree source -Prashant
460ex #dmesg <6>Using PowerPC 44x Platform machine description <4>Only using first contiguous memory region <5>Linux version 2.6.38.4 (root@stripe) (gcc version 4.3.4 (Buildroot 2010.02) ) #12 Thu May 19 16:51:17 IST 2011 <4>Found initrd at 0xefdff000:0xeffffc24 <7>Found legacy serial port 0 for /plb/opb/serial@ef600300 <7> mem=4ef600300, taddr=4ef600300, irq=0, clk=7407407, speed=0 <7>Found legacy serial port 1 for /plb/opb/serial@ef600400 <7> mem=4ef600400, taddr=4ef600400, irq=0, clk=7407407, speed=0 <7>Found legacy serial port 2 for /plb/opb/serial@ef600500 <7> mem=4ef600500, taddr=4ef600500, irq=0, clk=7407407, speed=0 <7>Found legacy serial port 3 for /plb/opb/serial@ef600600 <7> mem=4ef600600, taddr=4ef600600, irq=0, clk=7407407, speed=0 <7>Top of RAM: 0x30000000, Total RAM: 0x30000000 <7>Memory hole size: 0MB <4>Zone PFN ranges: <4> DMA 0x00000000 -> 0x00030000 <4> Normal empty <4>Movable zone start PFN for each node <4>early_node_map[1] active PFN ranges <4> 0: 0x00000000 -> 0x00030000 <7>On node 0 totalpages: 196608 <7>free_area_init_node: node 0, pgdat c033b628, node_mem_map c045e000 <7> DMA zone: 1536 pages used for memmap <7> DMA zone: 0 pages reserved <7> DMA zone: 195072 pages, LIFO batch:31 <6>MMU: Allocated 1088 bytes of context maps for 255 contexts <7>pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 <7>pcpu-alloc: [0] 0 <4>Built 1 zonelists in Zone order, mobility grouping on. Total pages: 195072 <5>Kernel command line: root=/dev/ram rw console=ttyS0,115200 <6>PID hash table entries: 4096 (order: 2, 16384 bytes) <6>Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) <6>Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) <6>Memory: 772860k/786432k available (3240k kernel code, 13572k reserved, 100k data, 1127k bss, 160k init) <6>Kernel virtual memory layout: <6> * 0xfffdf000..0xfffff000 : fixmap <6> * 0xfde00000..0xfe000000 : consistent mem <6> * 0xfde00000..0xfde00000 : early ioremap <6> * 0xf1000000..0xfde00000 : vmalloc & ioremap <6>SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 <6>NR_IRQS:512 nr_irqs:512 16 <4>UIC0 (32 IRQ sources) at DCR 0xc0 <4>UIC1 (32 IRQ sources) at DCR 0xd0 <7>irq: irq 30 on host /interrupt-controller0 mapped to virtual irq 30 <4>UIC2 (32 IRQ sources) at DCR 0xe0 <7>irq: irq 10 on host /interrupt-controller0 mapped to virtual irq 16 <4>UIC3 (32 IRQ sources) at DCR 0xf0 <7>irq: irq 16 on host /interrupt-controller0 mapped to virtual irq 17 <7>time_init: decrementer frequency = 1000.000012 MHz <7>time_init: processor frequency = 1000.000012 MHz <6>clocksource: timebase mult[400000] shift[22] registered <7>clockevent: decrementer mult[80000019] shift[31] cpu[0] <6>pid_max: default: 32768 minimum: 301 <4>Mount-cache hash table entries: 512 <6>NET: Registered protocol family 16 <7>irq: irq 11 on host /interrupt-controller1 mapped to virtual irq 18 <6>256k L2-cache enabled <6>PCIE0: Port disabled via device-tree <6>PCIE1: Checking link... <6>PCIE1: Device detected, waiting for link... <6>PCIE1: link is up ! <6>PCI host bridge /plb/pciex@d20000000 (primary) ranges: <6> MEM 0x0000000e80000000..0x0000000effffffff -> 0x0000000080000000 <6> MEM 0x0000000f00100000..0x0000000f001fffff -> 0x0000000000000000 <6> IO 0x0000000f80010000..0x0000000f8001ffff -> 0x0000000000000000 <6> Removing ISA hole at 0x0000000f00100000 <6>4xx PCI DMA offset set to 0x00000000 <6>/plb/pciex@d20000000: Legacy ISA memory support enabled <6>PCIE1: successfully set as root-complex <6>PCI host bridge /plb/pci@c0ec00000 (primary) ranges: <6> MEM 0x0000000d80000000..0x0000000dffffffff -> 0x0000000080000000 <6> MEM 0x0000000c0ee00000..0x0000000c0eefffff -> 0x0000000000000000 <6> IO 0x0000000c08000000..0x0000000c0800ffff -> 0x0000000000000000 <6> Removing ISA hole at 0x0000000c0ee00000 <6>4xx PCI DMA offset set to 0x00000000 <6>/plb/pci@c0ec00000: Legacy ISA memory support enabled <6>PCI: Probing PCI hardware <7>pci_bus 0000:80: scanning bus <7>pci 0000:80:00.0: [aaa1:bed1] type 1 class 0x000604 <7>pci 0000:80:00.0: calling quirk_mmio_always_on+0x0/0x24 <7>pci 0000:80:00.0: reg 10: [mem 0x00000000-0x7fffffff pref] <7>pci 0000:80:00.0: calling pcibios_fixup_resources+0x0/0x174 <7>pci 0000:80:00.0: calling fixup_ppc4xx_pci_bridge+0x0/0x134 <6>PCI: Hiding 4xx host bridge resources 0000:80:00.0 <7>pci 0000:80:00.0: calling quirk_resource_alignment+0x0/0x1e0 <7>pci_bus 0000:80: fixups for bus <7>pci 0000:80:00.0: scanning [bus 81-bf] behind bridge, pass 0 <7>pci_bus 0000:81: scanning bus <7>pci_bus 0000:81: fixups for bus <6>pci 0000:80:00.0: PCI bridge to [bus 81-bf] <7>pci 0000:80:00.0: bridge window [io 0x0000-0x0000] (disabled) <7>pci 0000:80:00.0: bridge window [mem 0xb8000000-0xb80fffff] <7>pci 0000:80:00.0: bridge window [mem 0x10000000-0x000fffff pref] (disabled) <7>pci_bus 0000:81: bus scan returning with max=81 <7>pci 0000:80:00.0: scanning [bus 81-bf] behind bridge, pass 1 <7>pci_bus 0000:80: bus scan returning with max=bf <7>pci_bus 0001:00: scanning bus <7>pci_bus 0001:00: fixups for bus <7>pci_bus 0001:00: bus scan returning with max=00 <6>pci 0000:80:00.0: PCI bridge to [bus 81-bf] <6>pci 0000:80:00.0: bridge window [io disabled] <6>pci 0000:80:00.0: bridge window [mem disabled] <6>pci 0000:80:00.0: bridge window [mem pref disabled] <7>pci_bus 0000:80: resource 0 [io 0xfffe0000-0xfffeffff] <7>pci_bus 0000:80: resource 1 [mem 0xe80000000-0xeffffffff] <7>pci_bus 0001:00: resource 0 [io 0x0000-0xffff] <7>pci_bus 0001:00: resource 1 [mem 0xd80000000-0xdffffffff] <4>bio: create slab <bio-0> at 0 <6>vgaarb: loaded <5>SCSI subsystem initialized <6>Switching to clocksource timebase <6>NET: Registered protocol family 2 <6>IP route cache hash table entries: 32768 (order: 5, 131072 bytes) <6>TCP established hash table entries: 131072 (order: 8, 1048576 bytes) <6>Switched to NOHz mode on CPU #0 <6>TCP bind hash table entries: 65536 (order: 6, 262144 bytes) <6>TCP: Hash tables configured (established 131072 bind 65536) <6>TCP reno registered <6>UDP hash table entries: 512 (order: 1, 8192 bytes) <6>UDP-Lite hash table entries: 512 (order: 1, 8192 bytes) <6>NET: Registered protocol family 1 <6>RPC: Registered udp transport module. <6>RPC: Registered tcp transport module. <6>RPC: Registered tcp NFSv4.1 backchannel transport module. <7>pci 0000:80:00.0: calling quirk_cardbus_legacy+0x0/0x50 <7>pci 0000:80:00.0: calling quirk_usb_early_handoff+0x0/0x714 <7>PCI: CLS 32 bytes, default 32 <6>Trying to unpack rootfs image as initramfs... <6>rootfs image is not initramfs (no cpio magic); looks like an initrd <4>Freeing initrd memory: 2051k freed <7>irq: irq 1 on host /interrupt-controller1 mapped to virtual irq 19 <7>irq: irq 1 on host /interrupt-controller0 mapped to virtual irq 20 <7>irq: irq 29 on host /interrupt-controller1 mapped to virtual irq 29 <7>irq: irq 30 on host /interrupt-controller1 mapped to virtual irq 21 <7>irq: irq 29 on host /interrupt-controller0 mapped to virtual irq 22 <7>irq: irq 6 on host /interrupt-controller2 mapped to virtual irq 23 <7>irq: irq 7 on host /interrupt-controller2 mapped to virtual irq 24 <7>irq: irq 3 on host /interrupt-controller2 mapped to virtual irq 25 <7>irq: irq 4 on host /interrupt-controller2 mapped to virtual irq 26 <7>irq: irq 5 on host /interrupt-controller2 mapped to virtual irq 27 <7>irq: irq 22 on host /interrupt-controller0 mapped to virtual irq 28 <7>irq: irq 21 on host /interrupt-controller0 mapped to virtual irq 31 <7>irq: irq 22 on host /interrupt-controller1 mapped to virtual irq 32 <7>irq: irq 6 on host /interrupt-controller1 mapped to virtual irq 33 <7>irq: irq 0 on host /interrupt-controller1 mapped to virtual irq 34 <7>irq: irq 18 on host /interrupt-controller0 mapped to virtual irq 35 <7>irq: irq 9 on host /interrupt-controller0 mapped to virtual irq 36 <7>irq: irq 20 on host /interrupt-controller3 mapped to virtual irq 37 <7>irq: irq 21 on host /interrupt-controller3 mapped to virtual irq 38 <7>irq: irq 21 on host /interrupt-controller1 mapped to virtual irq 39 <7>irq: irq 20 on host /interrupt-controller1 mapped to virtual irq 40 <7>irq: irq 2 on host /interrupt-controller2 mapped to virtual irq 41 <7>irq: irq 2 on host /interrupt-controller0 mapped to virtual irq 42 <7>irq: irq 3 on host /interrupt-controller0 mapped to virtual irq 43 <7>irq: irq 16 on host /interrupt-controller2 mapped to virtual irq 44 <7>irq: irq 20 on host /interrupt-controller2 mapped to virtual irq 45 <7>irq: irq 17 on host /interrupt-controller2 mapped to virtual irq 46 <7>irq: irq 21 on host /interrupt-controller2 mapped to virtual irq 47 <7>irq: irq 0 on host /interrupt-controller0 mapped to virtual irq 48 <3>setting trigger mode 3 for irq 42 failed (compat_irq_set_type+0x0/0x30) <3>setting trigger mode 3 for irq 42 failed (compat_irq_set_type+0x0/0x30) <6>ROMFS MTD (C) 2007 Red Hat, Inc. <6>msgmni has been set to 1515 <6>Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) <6>io scheduler noop registered <6>io scheduler deadline registered <6>io scheduler cfq registered (default) <6>pci_hotplug: PCI Hot Plug PCI Core version: 0.5 <6>Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled <6>serial8250.0: ttyS0 at MMIO 0x4ef600300 (irq = 19) is a U6_16550A <6>console [ttyS0] enabled <6>serial8250.0: ttyS1 at MMIO 0x4ef600400 (irq = 20) is a U6_16550A <6>serial8250.0: ttyS2 at MMIO 0x4ef600500 (irq = 29) is a U6_16550A <6>serial8250.0: ttyS3 at MMIO 0x4ef600600 (irq = 21) is a U6_16550A <6>4ef600300.serial: ttyS0 at MMIO 0x4ef600300 (irq = 19) is a 16550 <6>4ef600400.serial: ttyS1 at MMIO 0x4ef600400 (irq = 20) is a 16550 <6>4ef600500.serial: ttyS2 at MMIO 0x4ef600500 (irq = 29) is a 16550 <6>4ef600600.serial: ttyS3 at MMIO 0x4ef600600 (irq = 21) is a 16550 <6>brd: module loaded <6>mpt2sas version 07.100.00.00 loaded <6>PPC 4xx OCP EMAC driver, version 3.54 <6>MAL v2 /plb/mcmal, 2 TX channels, 16 RX channels <6>ZMII /plb/opb/emac-zmii@ef600d00 initialized <6>RGMII /plb/opb/emac-rgmii@ef601500 initialized with MDIO support <6>TAH /plb/opb/emac-tah@ef601350 initialized <6>TAH /plb/opb/emac-tah@ef601450 initialized <5>/plb/opb/emac-rgmii@ef601500: input 0 in RGMII mode <6>eth0: EMAC-0 /plb/opb/ethernet@ef600e00, MAC 12:34:56:78:cc:dd <4>eth0: found Generic MII PHY (0x00) <5>/plb/opb/emac-rgmii@ef601500: input 1 in RGMII mode <6>eth1: EMAC-1 /plb/opb/ethernet@ef600f00, MAC 12:34:56:78:dc:dd <4>eth1: found Generic MII PHY (0x01) <6>i2c /dev entries driver <6>of:ibm-iic 4ef600700.i2c: using standard (100 kHz) mode <7>irq: irq 25 on host /interrupt-controller2 mapped to virtual irq 49 <6>rtc-m41t80 0-0068: chip found, driver version 0.05 <6>rtc-m41t80 0-0068: rtc core: registered m41t80 as rtc0 <6>of:ibm-iic 4ef600800.i2c: using standard (100 kHz) mode <6>ad7414 0-0048: chip found <4>ad7414 0-0048: ad7414_probe unable to read config register. <6>TCP cubic registered <6>NET: Registered protocol family 17 <6>rtc-m41t80 0-0068: setting system clock to 2071-09-15 11:14:52 UTC (3209541292) <5>RAMDISK: gzip image found at block 0 <4>VFS: Mounted root (romfs filesystem) readonly on device 1:0. <4>Freeing unused kernel memory: 160k init <6>eth0: link is down <6>eth1: link is down <6>eth0: link is up, 100 FDX, pause enabled 460ex #
U-Boot 2009.08 (Apr 08 2011 - 18:08:03)
CPU: AMCC PowerPC 460EX Rev. B at 1000 MHz (PLB=200, OPB=100, EBC=100 MHz)
Security/Kasumi support
Bootstrap Option H - Boot ROM Location I2C (Addr 0x52)
Internal PCI arbiter disabled
32 kB I-Cache 32 kB D-Cache
Board: Canyonlands - AMCC PPC460EX Evaluation Board, 1*PCIe/1*SATA, Rev. 0
I2C: ready
DRAM: 1 GB (ECC not enabled, 400 MHz, CL3)
I2C channel 1 test:
SDRAM channel: OK
AT24C02 channel: OK
RTC channel: OK
W83793 channel: OK
FLASH: 8 MB
NAND: 256 MiB
PCI: Bus Dev VenId DevId Class Int
PCIE1: successfully set as root-complex
02 00 1000 0072 0100 00
DTT: 1 FAILED INIT
Net: ppc_4xx_eth0, ppc_4xx_eth1
Type run flash_nfs to mount root filesystem over NFS
Hit any key to stop autoboot: 5
canyonlands.dts
Description: Binary data
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