On Mon, Mar 3, 2014 at 8:59 PM, Pratyush Anand <pratyush.anand@xxxxxx> wrote: > On Thu, Feb 27, 2014 at 05:12:38PM +0800, shiv prakash Agarwal wrote: >> Hi All, >> >> >> >> One query: >> >> >> >> We can program config space registers of a pcie device using setpci but >> how can we program private registers of a pcie device? > > You mean application specific registers? > These registers will not be accessible through any generic user space program. > > If you want to access them for debug purposes then you can provide > support in your driver. If the registers are in config space, you can use setpci, even if they are non-architected registers specific to the device. If they are in MMIO space, you can use lspci to learn where the BARs are mapped, and then use something like rdwrmem (http://cmp.felk.cvut.cz/~pisa/linux/rdwrmem.c) to access the registers. If they are in I/O port space, you can again use lspci to learn where they are mapped, and then use ioperm()/iopl()/inb()/outb()/etc. Bjorn -- 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
