5 messages, 4 authors, 2007-10-08 · open the first message on its own page
From: Peter Lemenkov <hidden>
Date: 2007-10-06 20:47:55
Hello All! I can't compile one small software title because of lack <sys/io.h> and inb/outb macros. What sould I do to overcome this obstacle? My linux distro is Fedora 7 if it is matter. -- With best regards!
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2007-10-06 21:08:10
On Sun, 2007-10-07 at 00:47 +0400, Peter Lemenkov wrote:
Hello All! I can't compile one small software title because of lack <sys/io.h> and inb/outb macros. What sould I do to overcome this obstacle? My linux distro is Fedora 7 if it is matter.
They don't exist in user space on non-x86. You have to do things differently. What is your software trying to do ? If it's trying to access a PCI device IO space, you probably want to mmap it in sysfs and write your own accessors with appropriate memory barriers. Ben
From: Arnd Bergmann <arnd@arndb.de>
Date: 2007-10-06 23:47:51
On Saturday 06 October 2007, Benjamin Herrenschmidt wrote:
On Sun, 2007-10-07 at 00:47 +0400, Peter Lemenkov wrote:quoted
Hello All! I can't compile one small software title because of lack <sys/io.h> and inb/outb macros. What sould I do to overcome this obstacle? My linux distro is Fedora 7 if it is matter.They don't exist in user space on non-x86. You have to do things differently. What is your software trying to do ? If it's trying to access a PCI device IO space, you probably want to mmap it in sysfs and write your own accessors with appropriate memory barriers.
All cases where I've seen application software use <sys/io.h>, there was actually a full device driver in the kernel that already exported a high-level interface to user space. If that's the case here, the application should use that instead of sysfs. Arnd <><
From: Misbah khan <hidden>
Date: 2007-10-08 06:05:17
inb/outb could be used from the usr space on x86 class PC-computer to access to io ports this is what i assume that you are trying You need to compile the program with -O option (expantion of Inline function ) To perform io operation on ports ioprem/iopl system call must be used (To get permissio to perform io operation) Program must run as root on non 86 platform try using /dev/port device file in the application misbah Arnd Bergmann wrote:
On Saturday 06 October 2007, Benjamin Herrenschmidt wrote:quoted
On Sun, 2007-10-07 at 00:47 +0400, Peter Lemenkov wrote:quoted
Hello All! I can't compile one small software title because of lack <sys/io.h> and inb/outb macros. What sould I do to overcome this obstacle? My linux distro is Fedora 7 if it is matter.They don't exist in user space on non-x86. You have to do things differently. What is your software trying to do ? If it's trying to access a PCI device IO space, you probably want to mmap it in sysfs and write your own accessors with appropriate memory barriers.All cases where I've seen application software use <sys/io.h>, there was actually a full device driver in the kernel that already exported a high-level interface to user space. If that's the case here, the application should use that instead of sysfs. Arnd <>< _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2007-10-08 08:12:07
On Mon, 2007-10-08 at 00:09 -0700, Misbah khan wrote:
inb/outb could be used from the usr space on x86 class PC-computer to access to io ports this is what i assume that you are trying You need to compile the program with -O option (expantion of Inline function ) To perform io operation on ports ioprem/iopl system call must be used (To get permissio to perform io operation) Program must run as root on non 86 platform try using /dev/port device file in the application
"io ports" don't mean much on non-x86 platforms (or rather can have multiple meanings) which is why I'm asking what is he trying to od in the first place. Ben.