static ssize_t debug_read_pagetable(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct device *dev = file->private_data;
struct omap_iommu *obj = dev_to_omap_iommu(dev);
char *p, *buf;
size_t bytes;
buf = (char *)__get_free_page(GFP_KERNEL);
if (!buf)
return -ENOMEM;
p = buf;
p += sprintf(p, "L: %8s %8s\n", "da:", "pa:");
p += sprintf(p, "-----------------------------------------\n");
mutex_lock(&iommu_debug_lock);
bytes = PAGE_SIZE - (p - buf);
p += dump_ioptable(obj, p, bytes);
bytes = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
mutex_unlock(&iommu_debug_lock);
free_page((unsigned long)buf);
return bytes;
}
static int debug_read_pagetable(struct seq_file *s, void *data)
{
struct omap_iommu *obj = s->private;
if (is_omap_iommu_detached(obj))
return -EPERM;
mutex_lock(&iommu_debug_lock);
seq_printf(s, "L: %8s %8s\n", "da:", "pte:");
seq_puts(s, "--------------------------\n");
dump_ioptable(s);
mutex_unlock(&iommu_debug_lock);
return 0;
}
