On Tue, 7 Dec 2004 10:57:20 -0500
Dan Malek <dan@xxxxxxxxxxxxxxxx> wrote:
> > ret = remap_page_range( start, 0x40000000, size, vma->vm_page_prot
> >
> > ); //
>
> Use io_remap_page_range, it has the same parameters, and is
> designed to work with > 32-bit physical addresses.
Well, I test it. On module load - unresolved symbol remap_page_range_high. I looking for some ifdefs
where this function blocked, but seems like everithing is ok. :(
>
> Also, you should really use pci_resource_* functions to get
> information about the pci address, size, etc. Don't hardcode this,
> even for testing.
There is a new variant. If I by hand make io_remap_page_range visible - system hangs. :(
#define MAX_DEV 4
struct pci_dev *devs[MAX_DEV];
struct pci_dev *dev = NULL;
...
static unsigned long *offset;
static int mdrv_mmap(struct file * file, struct vm_area_struct *vma)
{
int ret;
struct inode *inode;
inode = file->f_dentry->d_inode;
ret = -EINVAL;
unsigned long start = vma->vm_start;
unsigned long size = (vma->vm_end-vma->vm_start);
struct pci_dev *curdev = NULL;
int minor = MINOR(inode->i_rdev);
printk("minor = %d\n",minor);
curdev = (devs[minor]);
offset = (unsigned long *)pci_resource_start(curdev,0);
printk("offset = 0x%X\n", offset );
ret = io_remap_page_range( start, offset, size, vma->vm_page_prot );
return ret;
}
