Re: Accessing 64-bit BARs
hello, Thanks rolf & roland. pci_iomap() is not doing something extra. only it is some kind of abstraction for IO-mapped OR memory mapped. I know that my BARs are MMIO, so using ioremap() & readl()/writel() combination should be fine. But for the problem as explained in my first mail, any help/suggestions will be helpful. -Yogeshwar On 10/4/07, Roland Dreier <[EMAIL PROTECTED]> wrote: > > You should use pci_iomap() to get an access pointer to the BAR. After this > you > > can access the memory with ioread*() and iowrite*(). See "man pci_iomap(9)" > > if you build kernel manpages. > > That works fine, but ioremap() and readl()/writel() is also perfectly > fine for regions that you know are always MMIO. > > - R. > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Accessing 64-bit BARs
> You should use pci_iomap() to get an access pointer to the BAR. After this > you > can access the memory with ioread*() and iowrite*(). See "man pci_iomap(9)" > if you build kernel manpages. That works fine, but ioremap() and readl()/writel() is also perfectly fine for regions that you know are always MMIO. - R. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Accessing 64-bit BARs
Am Donnerstag, 4. Oktober 2007 schrieb yogeshwar sonawane: > Hello all, > > For accessing memory-mapped 64bit-BAR regions of a PCI card, the > respective BAR regions has to be made accessible to the kernel using > ioremap() function. Then readl()/writel() can be used on the address > returned by ioremap(). You should use pci_iomap() to get an access pointer to the BAR. After this you can access the memory with ioread*() and iowrite*(). See "man pci_iomap(9)" if you build kernel manpages. Greetings, Eike signature.asc Description: This is a digitally signed message part.
Re: Accessing 64-bit BARs
Am Donnerstag, 4. Oktober 2007 schrieb yogeshwar sonawane: Hello all, For accessing memory-mapped 64bit-BAR regions of a PCI card, the respective BAR regions has to be made accessible to the kernel using ioremap() function. Then readl()/writel() can be used on the address returned by ioremap(). You should use pci_iomap() to get an access pointer to the BAR. After this you can access the memory with ioread*() and iowrite*(). See man pci_iomap(9) if you build kernel manpages. Greetings, Eike signature.asc Description: This is a digitally signed message part.
Re: Accessing 64-bit BARs
You should use pci_iomap() to get an access pointer to the BAR. After this you can access the memory with ioread*() and iowrite*(). See man pci_iomap(9) if you build kernel manpages. That works fine, but ioremap() and readl()/writel() is also perfectly fine for regions that you know are always MMIO. - R. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Accessing 64-bit BARs
hello, Thanks rolf roland. pci_iomap() is not doing something extra. only it is some kind of abstraction for IO-mapped OR memory mapped. I know that my BARs are MMIO, so using ioremap() readl()/writel() combination should be fine. But for the problem as explained in my first mail, any help/suggestions will be helpful. -Yogeshwar On 10/4/07, Roland Dreier [EMAIL PROTECTED] wrote: You should use pci_iomap() to get an access pointer to the BAR. After this you can access the memory with ioread*() and iowrite*(). See man pci_iomap(9) if you build kernel manpages. That works fine, but ioremap() and readl()/writel() is also perfectly fine for regions that you know are always MMIO. - R. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
