Re: can't access PCIe card under sbc8548

hi, all: The problem is now solved. In the sbc8548.dts file, the resource that is allocated to pcie controller is not suitable for my card. Actually, I think it is a typo, the range that is allocated to pcie io is 0x0800, now I change it to 0x0080. Then my serial card work OK! Is this

Re: can't access PCIe card under sbc8548

00: PCICSRBAR @ 0xfff0 Is 0xe280 the iobase_phys of the PCI bridge? So any suggestion is appreciated! regards, wolfking. -- View this message in context: http://linuxppc.10917.n7.nabble.com/can-t-access-PCIe-card-under-sbc8548-tp71775p71874.html Sent from the linuxppc-dev mai

Re: can't access PCIe card under sbc8548

hi, tiejun: When I don't compile my pcie card driver(in kernel or as a driver), the kernel auto allocate the resoures to my pcie card, here is the output: root@generic-powerpc-e500v2:~# cat /proc/ioports -007f : /pci@e0008000 -0fff : Legacy IO 1000-10ff : 000

Re: can't access PCIe card under sbc8548

hi, scott: Thanks for replying! > In what specific way does it not work? when I use iowrite8 to write, things seem OK, the codes continue running, when I use ioread8 to read, the console I use freezes. The console stops responding. > Why can't it succeed? Is there nothing mapped at 0xfc7fc

Re: can't access PCIe card under sbc8548

tiejun.chen wrote > On 05/30/2013 03:32 PM, wolfking wrote: >> (continued) >>I traced the 8139too.c when it uses pci_iomap, the pci_iomap called >> the >> ioport_map. The difference between 8139 and my PCIe card lies in the >> "port" value : >

Re: can't access PCIe card under sbc8548

tiejun.chen wrote > On 05/30/2013 06:02 PM, wolfking wrote: >> I tried several R/W functions: inb/outb and ioread8/iowrite8. The >> inb/outb > > What about out_be32/in_be32? > > my PCIe card's internal register is only 8 bit. So I tried ioremap, > out_8/in_8. &

Re: can't access PCIe card under sbc8548

I tried several R/W functions: inb/outb and ioread8/iowrite8. The inb/outb doesn't report any error while the ioread8 freeze. The load/storage sync code that I have used include mb and something else. -- View this message in context: http://linuxppc.10917.n7.nabble.com/can-t-access-PCIe-card-

Re: can't access PCIe card under sbc8548

hi, tiejun.chen: When I use ioremap, the card seems to work fine. That is, I can access part of all register. My PCIe card is a rs232 expand card, it has some standard UART register, for example the SCR(scratch register). My driver can access the SCR(write and read) normally, but the other regis

Re: can't access PCIe card under sbc8548

(continued) I traced the 8139too.c when it uses pci_iomap, the pci_iomap called the ioport_map. The difference between 8139 and my PCIe card lies in the "port" value : void __iomem *ioport_map(unsigned long port, unsigned int len) { return (void __iomem *) (port + _IO_BASE); } in 8139t

Re: can't access PCIe card under sbc8548

hi, tiejun.chen: Thanks for replying. I tried to use ioremap too, but it doesn't work. The ioport_map method succeeded under mpc8641d which is also a ppc. In fact, I also tried using pci_iomap by imitating rtl8139's codes. The rtl8139's BAR0 is also a I/O mapped register and its code succeed

can't access PCIe card under sbc8548

hi, all I'm doing some developing on the windriver's sbc8548 board. The kernel I use is 3.6.10 and the u-boot version is 2012-10. I changed the board's configuration: the board now boot from the 64MB SODIMM Flash (not the default 8MB on-board Flash memory), and the PCI clock rate is changed to 33