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From: Dmitriy Tochansky <toch@dfpost.ru>
To: linux-mips@linux-mips.org
Subject: mmap problem another :)
Date: Wed, 8 Dec 2004 19:40:14 +0300	[thread overview]
Message-ID: <20041208194014.1302df6f.toch@dfpost.ru> (raw)

Ok. I did as you say and got that mmap func:

static int
mdrv_mmap (struct file *file, struct vm_area_struct *vma)
{
  unsigned long offset = 0;
  int ret;
  struct inode *inode;
  inode = file->f_dentry->d_inode;

  struct pci_dev *curdev = NULL;

  int minor = MINOR (inode->i_rdev);
  
  printk("minor = 0x%X\n",minor);

  curdev = (devs[minor]);

  unsigned long start = vma->vm_start;
  unsigned long size = (vma->vm_end - vma->vm_start);
  offset = pci_resource_start (curdev, IOMEM0);
  
  printk("offset = 0x%X\n",(unsigned int)offset);

  ret = remap_page_range_high (start, offset, size, vma->vm_page_prot);
  
  return ret;
}

And it works fine but... but when I try to do mmap not /dev/mboard0 but /dev/mboard1 Im again
have the "bad" result. :( Is there something specific to mmap several devices?

             reply	other threads:[~2004-12-08 16:39 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-08 16:40 Dmitriy Tochansky [this message]
2004-12-08 17:27 ` mmap problem another :) Dan Malek
2004-12-08 18:20   ` Pete Popov
2004-12-09  6:56   ` Dmitriy Tochansky
  -- strict thread matches above, loose matches on Subject: below --
2004-12-09 13:12 Dmitriy Tochansky
2004-12-09 14:36 ` Dan Malek
2004-12-14  7:51   ` Dmitriy Tochansky

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