PCI2 issue on MPC8541
Joyeau Sylvain
Sylvain.Joyeau at thomson.net
Fri Feb 9 00:02:27 EST 2007
Hi Shriram,
We faced a similar issue on PCI2/MPC8541 with linux 2.6.13. This version (and probably older ones) have a bug related to PCI2 ressource allocation inside the kernel (in particular due to wrong 'mpc85xx_pci1_last_busno' variable initialisation).
Upgrading to the last stable kernel release (2.6.19 for sure) may help.
--
Sylvain.
> -----Original Message-----
> From:
> linuxppc-embedded-bounces+sylvain.joyeau=thomson.net at ozlabs.or
g [mailto:linuxppc-embedded-> bounces+sylvain.joyeau=thomson.net at ozlabs.org] On Behalf Of
> Shriram Janardhan
> Sent: mercredi 7 février 2007 20:23
> To: linuxppc-embedded at ozlabs.org
> Subject: PCI2 issue on MPC8541
>
> Hello everybody,
>
> I'm having an issue w.r.t PCI2 on MPC8541 and would
> appreciate if anybody could share their thoughts on what
> could be wrong.
>
> We're running the 2.6.11 version of the linux kernel on
> MPC8541 and having trouble getting the cardmgr to initialize
> a compact flash connected to PCI2 through a TI1510 bridge.
>
> We have two CFs connected through two TI1510 bridges to the
> two PCI controllers. When cardmgr is invoked to intialize
> the two sockets, the PCI1/ide0 initialization goes on fine
> but the PCI2/ide-cs initialization fails.
>
> The bridges are on slot 11 of the respective controllers and
> the interrupts from the two bridges are multiplexed onto the
> same external interrupt pin(EXT2) of the 8541.
>
> For the second CF, we are able to read the CIS and correctly
> identify the CF, but the cardmgr fails while trying to
> execute the IOCTL DS_GET_DEVICE_INFO.
>
> ------------------------------------------------------------
> (none)#
> (none)# lspci -vv
> 00:00.0 Class 0b20: 1057:000c (rev 11)
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV-
> VGASnoop- ParErr- Step
> ping- SERR+ FastB2B-
> Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast
> >TAbort- <TAbort-
> <MAbort+ >SERR- <PERR-
> Latency: 128
> Interrupt: pin A routed to IRQ 0
> Region 0: Memory at 9ff00000 (32-bit,
> non-prefetchable) [size=1M]
> Region 1: Memory at <unassigned> (32-bit,
> prefetchable) [size=80000000]
> Region 2: Memory at <unassigned> (64-bit, non-prefetchable)
> Region 4: Memory at <unassigned> (64-bit, non-prefetchable)
>
> 00:0b.0 Class 0607: 104c:ac56
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV-
> VGASnoop- ParErr- Step
> ping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr-
> DEVSEL=medium >TAbort- <TAbort
> - <MAbort- >SERR- <PERR-
> Latency: 168, cache line size 08
> Interrupt: pin A routed to IRQ 98
> Region 0: Memory at 80000000 (32-bit,
> non-prefetchable) [size=4K]
> Bus: primary=00, secondary=01, subordinate=04, sec-latency=176
> Memory window 0: 80400000-807ff000 (prefetchable)
> Memory window 1: 80800000-80bff000
> I/O window 0: 00001000-000010ff
> I/O window 1: 00001400-000014ff
> BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+
> 16bInt+ PostWrite+
> 16-bit legacy interface ports at 0001
>
> 02:00.0 Class 0b20: 1057:000c (rev 11)
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV-
> VGASnoop- ParErr- Step
> ping- SERR+ FastB2B-
> Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast
> >TAbort- <TAbort-
> <MAbort+ >SERR- <PERR-
> Latency: 128
> Interrupt: pin A routed to IRQ 0
> Region 0: Memory at bff00000 (32-bit,
> non-prefetchable) [size=1M]
> Region 1: Memory at <unassigned> (32-bit,
> prefetchable) [size=80000000]
> Region 2: Memory at <unassigned> (64-bit, non-prefetchable)
> Region 4: Memory at <unassigned> (64-bit, non-prefetchable)
>
> 02:0b.0 Class 0607: 104c:ac56
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV-
> VGASnoop- ParErr- Step
> ping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr-
> DEVSEL=medium >TAbort- <TAbort
> - <MAbort- >SERR- <PERR-
> Latency: 168, cache line size 08
> Interrupt: pin A routed to IRQ 98
> Region 0: Memory at a0000000 (32-bit,
> non-prefetchable) [size=4K]
> Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
> Memory window 0: a0400000-a07ff000 (prefetchable)
> Memory window 1: a0800000-a0bff000
> I/O window 0: 00000000-000000ff
> I/O window 1: 00000400-000004ff
> BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+
> 16bInt+ PostWrite+
> 16-bit legacy interface ports at 0001
>
> (none)#
> --------------------------------------------------------------------
> (none)# cardmgr -v -o
> cardmgr[865]: watching 2 sockets
> cardmgr[865]: starting, version is 3.2.8
> cardmgr[865]: initializing socket 0
> cardmgr[86Probing IDE interface ide0...
> 5]: socket 0: ATA/IDE Fixed Disk
> cardmgr[865]: product info: "Wintec Industries", "CF 256MB"
> cardmgr[865]: function: 4 (fixed disk)
> hda: CF 256MB, CFA DISK drive
> ide0 at 0x000-0x007,0x00e on irq 98
> hda: max request size: 128KiB
> hda: 513536 sectors (262 MB) w/0KiB Cache, CHS=1003/16/32
> hda: cache flushes not supported
> hda: hda1
> ide-cs: hda: Vcc = 3.3, Vpp = 0.0
> cardmgr[865]: executing: './ide start hda'
> cardmgr[865]: + mknod /dev/hda b 3 0
> cardmgr[865]: + mknod /dev/hda1 b 3 1
> cardmgr[865]: + mknocs: memory probe 0x80000000-0x9fffffff:d
> /dev/hda2 b 3 excl
> uding2
> cardmgr[865] 0x80000000-0x9fffffff: + mknod /dev/h
> da3 b 3 3
> cardcs: memory probe 0xa0000000-0xbfffffff:mgr[865]: + mkno
> excludingd /dev/hda4
> b 3 0xa0000000-0xa1ffffff4
> cardmgr[865] 0xbe000000-0xbfffffff: + mknod /dev/h
> da5 b 3 5
> card1.0: mgr[865]: + mknoGetNextTuple: No more items
> d /dev/hda6 b 3 6
> cardmgr[865]: + mknod /dev/hda7 b 3 7
> cardmgr[865]: + mknod /dev/hda8 b 3 8
> cardmgr[865]: + mknod /dev/hda9 b 3 9
> cardmgr[865]: + mknod /dev/hda10 b 3 10
> cardmgr[865]: + mknod /dev/hda11 b 3 11
> cardmgr[865]: + mknod /dev/hda12 b 3 12
> cardmgr[865]: + mknod /dev/hda13 b 3 13
> cardmgr[865]: + mknod /dev/hda14 b 3 14
> cardmgr[865]: + mknod /dev/hda15 b 3 15
> cardmgr[865]: + mknod /dev/hda16 b 3 16
> cardmgr[865]: initializing socket 1
> cardmgr[865]: socket 1: ATA/IDE Fixed Disk
> cardmgr[865]: product info: "SILICONSYSTEMS", "VER2.00"
> cardmgr[865]: function: 4 (fixed disk)
> cardmgr[865]: get dev info on socket 1 failed: No such device
> cardmgr[865]: exiting
> (none)#
> --------------------------------------------------------------
> -------------------------
> (none)# cat /proc/ioports
> 00000000-00ffffff : PCI1 host bridge
> 00000000-0000000f : pcmcia_socket0
> 00000000-00000007 : ide0
> 0000000e-0000000e : ide0
> 00001000-000010ff : PCI CardBus #01
> 00001400-000014ff : PCI CardBus #01
> 01000000-01ffffff : PCI2 host bridge
> 01000000-010000ff : PCI CardBus #03
> 01000400-010004ff : PCI CardBus #03
> --------------------------------------------------------------
> ----------------------------
> (none)# cat /etc/pcmcia/config.opts
> # Local PCMCIA Configuration File
> #
> # System resources available for PCMCIA cards
> #
> include port 0x1000-0x1fff
> include port 0x0000-0x0fff
> include memory 0x80000000-0x9fffffff
> include memory 0xa0000000-0xbfffffff
> (none)#
> --------------------------------------------------------------
> -------------------------
>
> We use the following definitions - same as that of MPC8555CDS.
> /* PCI 1 memory map */
> #define MPC85XX_PCI1_LOWER_IO 0x00000000
> #define MPC85XX_PCI1_UPPER_IO 0x00ffffff
> #define MPC85XX_PCI1_LOWER_MEM 0x80000000
> #define MPC85XX_PCI1_UPPER_MEM 0x9fffffff
> #define MPC85XX_PCI1_IO_BASE 0xe2000000
> #define MPC85XX_PCI1_MEM_OFFSET 0x00000000
> #define MPC85XX_PCI1_IO_SIZE 0x01000000
> /* PCI 2 memory map */
> /* Note: the standard PPC fixups will cause IO space to get bumped by
> * hose->io_base_virt - isa_io_base => MPC85XX_PCI1_IO_SIZE */
> #define MPC85XX_PCI2_LOWER_IO 0x00000000
> #define MPC85XX_PCI2_UPPER_IO 0x00ffffff
> #define MPC85XX_PCI2_LOWER_MEM 0xa0000000
> #define MPC85XX_PCI2_UPPER_MEM 0xbfffffff
> #define MPC85XX_PCI2_IO_BASE 0xe3000000
> #define MPC85XX_PCI2_MEM_OFFSET 0x00000000
> #define MPC85XX_PCI2_IO_SIZE 0x01000000
> --------------------------------------------------------------
> ----------
>
> I am wondering if it is a PCMCIA addressing issue. I am not
> sure how to setup pcmcia/config.opts.
>
> Any thoughts??
>
> Thanks,
> Shriram.
>
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