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Date:      Thu, 07 Mar 2019 18:43:07 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 236373] mmio doesn't work on mmio
Message-ID:  <bug-236373-7788@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236373

            Bug ID: 236373
           Summary: mmio doesn't work on mmio
           Product: Ports & Packages
           Version: Latest
          Hardware: arm
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: ralfpeg@hotmail.de

this test program should set all gpio pins to high level. it does, with
different memory address, on raspbian. i guess there's something wrong with=
 the
port.

#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/mman.h>
#include <errno.h>
#include <stdint.h>

int main()
{
        volatile void *gpfs0; //general purpose function select 0
        int memfd;
        volatile uint32_t *gpfsr0; //general purpose function select regist=
er
                volatile uint32_t *gposr0; //general purpose output set
register
                volatile uint32_t *gpocr0; //general purpose output clear
register


        //open fd to physical memory
        memfd =3D open("/dev/mem", O_RDWR|O_SYNC);
        if(memfd =3D=3D -1)
        {
                printf("error opening /dev/mem\n");
                return 1;
        }

        //mapping into memory
        gpfs0 =3D mmap(NULL, sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE,
MAP_SHARED, memfd, 0x7e200000);
        if(gpfs0 =3D=3D MAP_FAILED)
        {
                printf("map failed: %d\n", errno);
                return 1;
        }=20=20=20=20=20=20=20

        gpfsr0 =3D gpfs0; //GPIO Function select 0=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20

       gposr0 =3D gpfs0 + 0x1c; //GPIO Output Set 0
                //gposr1 =3D gpfs0 + 32; //GPIO Output Set 0

        gpocr0 =3D gpfs0 + 0x28; //GPIO Output Clear 0
        //      gpocr1 =3D gpfs0 + 44; //GPIO Output Clear 0

                *gpfsr0 =3D 0111111111;

                *gposr0 =3D 0xffffffff;

                munmap((void *) gpfs0, sysconf(_SC_PAGE_SIZE));

                //printf("%ld\n", sysconf(_SC_PAGE_SIZE));

                printf("finish\n");

        return 0;
}

--=20
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