Hi,
I've a PCI card and am told that certain onboard registers are memory
mapped out into the PCI memory at a particular offset from the
PCI_BASE_ADDRESS_2 of the onboard device (the address in this case is
0xfc020000). To read/write to these 32bit registers then I use the snippet
below. I compile with gcc altregread.c -D __KERNEL__ -o altregread.o but
then get lines and lines of parse errors in header files (see below). The
KERNEL bit is for the io.h header file.
Ideas? Thanks in advance.
#include<stdio.h>
#include<stdlib.h>
#include<asm/io.h> //contains readl/writel, etc.
int main(void)
{
int status, *base = ioremap(0xfc020000, 1024*1024);
status = readl(base + 0x40);
iounmap(base);
printf("%x", status);
return(0);
}
In file included from /usr/include/linux/affs_fs_i.h:5,
from /usr/include/linux/fs.h:270,
from
/usr/include/linux/capability.h:13,
from
/usr/include/linux/binfmts.h:5,
from
/usr/include/linux/sched.h:8,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/time.h:69: warning: `FD_SET'
redefined
/usr/include/sys/select.h:63: warning: this is the location of
the previous definition
/usr/include/linux/time.h:70: warning: `FD_CLR'
redefined
/usr/include/sys/select.h:64: warning: this is the location of
the previous definition
/usr/include/linux/time.h:71: warning: `FD_ISSET'
redefined
/usr/include/sys/select.h:65: warning: this is the location of
the previous definition
/usr/include/linux/time.h:72: warning: `FD_ZERO'
redefined
/usr/include/sys/select.h:66: warning: this is the location of
the previous definition
In file included from
/usr/include/linux/affs_fs_i.h:5,
from
/usr/include/linux/fs.h:270,
from
/usr/include/linux/capability.h:13,
from
/usr/include/linux/binfmts.h:5,
from
/usr/include/linux/sched.h:8,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/time.h:9: redefinition of `struct
timespec'
/usr/include/linux/time.h:51: parse error before
`suseconds_t'
/usr/include/linux/time.h:51: warning: no semicolon at end of
struct or union
/usr/include/linux/time.h:88: field `it_interval' has
incomplete type
/usr/include/linux/time.h:89: field `it_value' has
incomplete type
In file included from /usr/include/linux/fs.h:270,
from /usr/include/linux/capability.h:13,
from /usr/include/linux/binfmts.h:5,
from
/usr/include/linux/sched.h:8,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/affs_fs_i.h:11: field `kc_lru_time' has
incomplete type
In file included from /usr/include/linux/fs.h:272,
from /usr/include/linux/capability.h:13,
from /usr/include/linux/binfmts.h:5,
from
/usr/include/linux/sched.h:8,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/efs_fs_i.h:13: parse error before
`efs_ino_t'
/usr/include/linux/efs_fs_i.h:13: warning: data definition has
no type or storage class
/usr/include/linux/efs_fs_i.h:49: parse error
before `uint32_t'
/usr/include/linux/efs_fs_i.h:49: warning: no semicolon
at end of struct or union
/usr/include/linux/efs_fs_i.h:57: parse error
before `}'
In file included from /usr/include/linux/coda_fs_i.h:14,
from /usr/include/linux/fs.h:273,
from
/usr/include/linux/capability.h:13,
from
/usr/include/linux/binfmts.h:5,
from
/usr/include/linux/sched.h:8,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/coda.h:109: warning: redefinition of
`u_quad_t'
/usr/include/sys/types.h:38: warning: `u_quad_t' previously
declared here
In file included from /usr/include/linux/sched.h:13,
from /usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/times.h:5: parse error before
`clock_t'
/usr/include/linux/times.h:5: warning: no semicolon at end of
struct or union
/usr/include/linux/times.h:6: warning: data definition has
no type or storage class
/usr/include/linux/times.h:7: parse error before
`tms_cutime'
/usr/include/linux/times.h:7: warning: data definition has no
type or storage class
/usr/include/linux/times.h:8: parse error before
`tms_cstime'
/usr/include/linux/times.h:8: warning: data definition has no
type or storage class
In file included from /usr/include/linux/sched.h:14,
from /usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/timex.h:159: field `time' has incomplete
type
In file included from /usr/include/linux/signal.h:5,
from /usr/include/linux/sched.h:23,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/asm/siginfo.h:48: parse error before
`clock_t'
/usr/include/asm/siginfo.h:48: warning: no semicolon at end of
struct or union
/usr/include/asm/siginfo.h:48: warning: no semicolon at end
of struct or union
/usr/include/asm/siginfo.h:49: warning: no semicolon at
end of struct or union
/usr/include/asm/siginfo.h:50: warning: data
definition has no type or storage class
/usr/include/asm/siginfo.h:62:
parse error before `}'
/usr/include/asm/siginfo.h:62: warning: data
definition has no type or storage class
/usr/include/asm/siginfo.h:63:
parse error before `}'
/usr/include/asm/siginfo.h:63: warning: data
definition has no type or storage class
In file included from
/usr/include/linux/sched.h:23,
from
/usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/signal.h:15: parse error before
`siginfo_t'
/usr/include/linux/signal.h:15: warning: no semicolon at end of
struct or union
In file included from /usr/include/linux/sched.h:71,
from /usr/include/linux/vmalloc.h:4,
from
/usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/resource.h:22: field `ru_utime' has
incomplete type
/usr/include/linux/resource.h:23: field `ru_stime' has
incomplete type
In file included from /usr/include/linux/vmalloc.h:4,
from /usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/sched.h:288: field `times' has
incomplete type
In file included from /usr/include/linux/vmalloc.h:4,
from /usr/include/asm/io.h:102,
from
altregread.c:4:
/usr/include/linux/sched.h:500: parse error before
`siginfo_t'
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