On Thursday 06 March 2014, Russell King - ARM Linux wrote: > On Wed, Mar 05, 2014 at 11:49:08AM +0000, Liviu Dudau wrote: > > The inline version of ioport_map() that gets used when !CONFIG_GENERIC_IOMAP > > is wrong. It returns a mapped (i.e. virtual) address that can start from > > zero and completely ignores the PCI_IOBASE and IO_SPACE_LIMIT that most > > architectures that use !CONFIG_GENERIC_MAP define. > > What value does PCI_IOBASE and IO_SPACE_LIMIT have on other architectures > who make use of asm-generic/io.h ? > > $ git grep asm-generic/io.h arch/ > arch/arc/include/asm/io.h:#include <asm-generic/io.h> PCI support hasn't been upstreamed. > arch/blackfin/include/asm/io.h:#include <asm-generic/io.h> > arch/metag/include/asm/io.h:#include <asm-generic/io.h> No PCI support > arch/microblaze/include/asm/io.h:/* from asm-generic/io.h */ PCI_IOBASE=0, IO_SPACE_LIMIT=0xffffffff, so no change. > arch/openrisc/include/asm/io.h:#include <asm-generic/io.h> No PCI support > arch/s390/include/asm/io.h:#include <asm-generic/io.h> s390 supports PCI but no I/O space > arch/score/include/asm/io.h:#include <asm-generic/io.h> No PCI support > arch/unicore32/include/asm/io.h:#include <asm-generic/io.h> unicore32 is broken currently, the patch fixes it. > arch/xtensa/include/asm/io.h:#include <asm-generic/io.h> PCI_IOBASE=0, IO_SPACE_LIMIT=0xffffffff, so no change. For most of these, I assume we actually want to remove support for inb/outb as they don't support I/O space accesses. The other ones look correct to me. Arnd -- 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
