Any suggestions? Best Regard Richard Zhu On 20 October 2011 11:14, Richard Zhu <richard.zhu@xxxxxxxxxx> wrote: > Hi All: > I'm a new pci/pcie developer, and trying to enable the pcie rc host on > the arm platform. > Up to now, > * the cfg space of target pcie device can be accessed, and the link > between host and target is set up. > * the target pcie device (intel 4965AGN wifi card) had been scanned > and allocated the mem resource > > But the wifi driver can't access the pcie target device's mem resource. > System is halt when wifi driver accesses the pcie target device's mem address. > > The memory layout of the pcie host: > * 0x0100_0000 --- 0x0100_FFFF 64KB IORESOURCE_IO > * 0x0101_0000 --- 0x01FE_FFFF 16MB - 128KB IORESOURCE_MEM > * 0x01FF_0000 --- 0x01FF_FFFF 64KB Cfg + Registers > > Can anyone help me to analysis this situation? > Any suggestions and advices are appriciated. > > here are the logs: > ---------------------------------Log------------------------------------------------- > root@freescale ~$ lspci > 00:00.0 Network controller: Intel Corporation Unknown device 4229 (rev 61) > root@freescale ~$ lspci -vv > 00:00.0 Network controller: Intel Corporation Unknown device 4229 (rev 61) > Subsystem: Intel Corporation Unknown device 1100 > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- > ParErr+ Stepping- SERR+ FastB2B- > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- > <TAbort- <MAbort- >SERR- <PERR- > Latency: 0, Cache Line Size: 32 bytes > Interrupt: pin A routed to IRQ 152 > Region 0: Memory at 01010000 (64-bit, non-prefetchable) [size=8K] > Capabilities: [c8] Power Management version 3 > Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA > PME(D0+,D1-,D2-,D3hot+,D3cold+) > Status: D0 PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ > Queue=0/0 Enable- > Address: 0000000000000000 Data: 0000 > Capabilities: [e0] Express Endpoint IRQ 0 > Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag- > Device: Latency L0s <512ns, L1 unlimited > Device: AtnBtn- AtnInd- PwrInd- > Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported- > Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ > Device: MaxPayload 128 bytes, MaxReadReq 128 bytes > Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s L1, Port 4 > Link: Latency L0s <128ns, L1 <64us > Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch- > Link: Speed 2.5Gb/s, Width x1 > Capabilities: [100] Advanced Error Reporting > Capabilities: [140] Device Serial Number d5-af-73-ff-ff-5c-21-00 > > root@freescale ~$ cat /proc/ioports > 01000000-0100ffff : PCIe 0 I/O > root@freescale ~$ cat /proc/iomem > ... > 01010000-01feffff : PCIe 0 MEM > 01010000-01011fff : 0000:00:00.0 > 01010000-01011fff : iwlagn > ... > > > pcie target 4965agn wifi card mem remap log: > --------------------------------------------------------------------------------- > iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d > iwlagn: Copyright(c) 2003-2010 Intel Corporation > iwlagn: *** LOAD DRIVER *** > iwlagn: BT channel inhibition is On > PCI: enabling device 0000:00:00.0 (0140 -> 0142) > pci_iomap entering, start 0x01010000, len 0x00002000 > iwlagn: pci_resource_len = 0x00002000 > iwlagn: pci_resource_base = ea9b0000 > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
