GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.0(Squeeze) |
|
 |
pciconfig_write(2) |
 |
pciconfig_read, pciconfig_write, pciconfig_iobase − pci device information handling
#include <pci.h>
int
pciconfig_read(unsigned long bus, unsigned
long dfn,
unsigned long off, unsigned long
len, void *buf);
int pciconfig_write(unsigned long bus,
unsigned long dfn,
unsigned long off, unsigned long
len, void *buf);
int pciconfig_iobase(long which, unsigned
long bus,
unsigned long devfn);
Most of the
interaction with PCI devices is already handled by the
kernel PCI layer, and thus these calls should not normally
need to be accessed from userspace.
pciconfig_read()
Reads to buf from device dev at offset off value.
pciconfig_write()
Writes from buf to device dev at offset off value.
pciconfig_iobase()
You pass it a bus/devfn pair and get a physical address for either the memory offset (for things like prep, this is 0xc0000000), the IO base for PIO cycles, or the ISA holes if any.
pciconfig_read()
On success zero is returned. On error, −1 is returned and errno is set appropriately.
pciconfig_write()
On success zero is returned. On error, −1 is returned and errno is set appropriately.
pciconfig_iobase()
Returns information on locations of various I/O regions in physical memory according to the which value. Values for which are: IOBASE_BRIDGE_NUMBER, IOBASE_MEMORY, IOBASE_IO, IOBASE_ISA_IO, IOBASE_ISA_MEM.
|
EINVAL |
len value is invalid. This does not apply to pciconfig_iobase(). | ||
|
EIO |
I/O error. | ||
|
ENODEV |
For pciconfig_iobase(), "hose" value is NULL. For the other calls, could not find a slot. | ||
|
ENOSYS |
The system has not implemented these calls (CONFIG_PCI not defined). |
EOPNOTSUPP
This return value is only valid for pciconfig_iobase(). It is returned if the value for which is invalid.
|
EPERM |
User does not have the CAP_SYS_ADMIN capability. This does not apply to pciconfig_iobase(). |
These calls are Linux-specific, available since Linux 2.0.26/2.1.11.
capabilities(7)
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
|
pciconfig_write(2) | |