static int vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf){
unsigned long * vp=(unsigned long*)vma->vm_private_data;
if(likely(vp)){
unsigned int offset=1+(((unsigned long)vmf->virtual_address-vma->vm_start)>>PAGE_SHIFT);
if(likely(offset<vp[0]))
//vm_insert_page(vma,(unsigned long)vmf->virtual_address,(struct page*) vp[offset]);
vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, vp[offset]);
//gt(printk("<0>" "vma_fault for va: %lx, vma_start: %lx, offset: %u, len: %lx, vp[offset]:%lx\n", (unsigned long)vmf->virtual_address, vma->vm_start, offset, vp[0], vp[offset]));
}
return VM_FAULT_NOPAGE;
}
/*
* mspec_fault
*
* Creates a mspec page and maps it to user space.
*/
static int
mspec_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
unsigned long paddr, maddr;
unsigned long pfn;
pgoff_t index = vmf->pgoff;
struct vma_data *vdata = vma->vm_private_data;
maddr = (volatile unsigned long) vdata->maddr[index];
if (maddr == 0) {
maddr = uncached_alloc_page(numa_node_id(), 1);
if (maddr == 0)
return VM_FAULT_OOM;
spin_lock(&vdata->lock);
if (vdata->maddr[index] == 0) {
vdata->count++;
vdata->maddr[index] = maddr;
} else {
uncached_free_page(maddr, 1);
maddr = vdata->maddr[index];
}
spin_unlock(&vdata->lock);
}
if (vdata->type == MSPEC_FETCHOP)
paddr = TO_AMO(maddr);
else
paddr = maddr & ~__IA64_UNCACHED_OFFSET;
pfn = paddr >> PAGE_SHIFT;
/*
* vm_insert_pfn can fail with -EBUSY, but in that case it will
* be because another thread has installed the pte first, so it
* is no problem.
*/
vm_insert_pfn(vma, vmf->address, pfn);
return VM_FAULT_NOPAGE;
}
static int mali_mem_block_cpu_map(mali_mem_allocation *descriptor, struct vm_area_struct *vma, u32 mali_phys, u32 mapping_offset, u32 size, u32 cpu_usage_adjust)
{
u32 virt = vma->vm_start + mapping_offset;
u32 cpu_phys = mali_phys + cpu_usage_adjust;
u32 offset = 0;
int ret;
while (size) {
ret = vm_insert_pfn(vma, virt + offset, __phys_to_pfn(cpu_phys + offset));
if (unlikely(ret)) {
MALI_DEBUG_PRINT(1, ("Block allocator: Failed to insert pfn into vma\n"));
return 1;
}
size -= MALI_MMU_PAGE_SIZE;
offset += MALI_MMU_PAGE_SIZE;
}
return 0;
}
goto fail;
}
r->mmapping = 1;
}
/* Page relative to the VMA start - we must calculate this ourselves
because vmf->pgoff is the fake GEM offset */
page_offset = ((unsigned long) vmf->virtual_address - vma->vm_start)
>> PAGE_SHIFT;
/* CPU view of the page, don't go via the GART for CPU writes */
if (r->stolen)
pfn = (dev_priv->stolen_base + r->offset) >> PAGE_SHIFT;
else
pfn = page_to_pfn(r->pages[page_offset]);
ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
fail:
mutex_unlock(&dev->struct_mutex);
switch (ret) {
case 0:
case -ERESTARTSYS:
case -EINTR:
return VM_FAULT_NOPAGE;
case -ENOMEM:
return VM_FAULT_OOM;
default:
return VM_FAULT_SIGBUS;
}
}
