* processor from ever speculating a cache line from this page.
*/
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
MSPEC_UNCACHED
};
+#ifdef CONFIG_SGI_SN
static int is_sn2;
+#else
+#define is_sn2 0
+#endif
/*
* One of these structures is allocated when an mspec region is mmaped. The
if (vdata->type == MSPEC_FETCHOP)
paddr = TO_AMO(maddr);
else
- paddr = __pa(TO_CAC(maddr));
+ paddr = maddr & ~__IA64_UNCACHED_OFFSET;
pfn = paddr >> PAGE_SHIFT;
vdata->refcnt = ATOMIC_INIT(1);
vma->vm_private_data = vdata;
- vma->vm_flags |= (VM_IO | VM_LOCKED | VM_RESERVED | VM_PFNMAP);
+ vma->vm_flags |= (VM_IO | VM_RESERVED | VM_PFNMAP);
if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &mspec_vm_ops;
return mspec_mmap(file, vma, MSPEC_UNCACHED);
}
-static struct file_operations fetchop_fops = {
+static const struct file_operations fetchop_fops = {
.owner = THIS_MODULE,
.mmap = fetchop_mmap
};
.fops = &fetchop_fops
};
-static struct file_operations cached_fops = {
+static const struct file_operations cached_fops = {
.owner = THIS_MODULE,
.mmap = cached_mmap
};
.fops = &cached_fops
};
-static struct file_operations uncached_fops = {
+static const struct file_operations uncached_fops = {
.owner = THIS_MODULE,
.mmap = uncached_mmap
};
* The fetchop device only works on SN2 hardware, uncached and cached
* memory drivers should both be valid on all ia64 hardware
*/
+#ifdef CONFIG_SGI_SN
if (ia64_platform_is("sn2")) {
is_sn2 = 1;
if (is_shub2()) {
goto free_scratch_pages;
}
}
+#endif
ret = misc_register(&cached_miscdev);
if (ret) {
printk(KERN_ERR "%s: failed to register device %i\n",