-static int mmap_rcvhdrq(struct vm_area_struct *vma,
- struct ipath_portdata *pd)
-{
- struct ipath_devdata *dd = pd->port_dd;
- size_t total_size;
- int ret;
-
- /*
- * kmalloc'ed memory, physically contiguous; this is from
- * spi_rcvhdr_base; we allow user to map read-write so they can
- * write hdrq entries to allow protocol code to directly poll
- * whether a hdrq entry has been written.
- */
- total_size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize *
- sizeof(u32), PAGE_SIZE);
- if ((vma->vm_end - vma->vm_start) > total_size) {
- dev_info(&dd->pcidev->dev,
- "FAIL on rcvhdrq: reqlen %lx > actual %lx\n",
- vma->vm_end - vma->vm_start,
- (unsigned long) total_size);
- ret = -EFAULT;
- goto bail;
- }
-
- ret = remap_pfn_range(vma, vma->vm_start,
- pd->port_rcvhdrq_phys >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
-bail:
- return ret;
-}
-
-static int mmap_pioavailregs(struct vm_area_struct *vma,
- struct ipath_portdata *pd)
-{
- struct ipath_devdata *dd = pd->port_dd;
- int ret;
-
- /*
- * when we map the PIO bufferavail registers, we want to map them as
- * readonly, no write possible.
- *
- * kmalloc'ed memory, physically contiguous, one page only, readonly
- */
-
- if ((vma->vm_end - vma->vm_start) > PAGE_SIZE) {
- dev_info(&dd->pcidev->dev, "FAIL on pioavailregs_dma: "
- "reqlen %lx > actual %lx\n",
- vma->vm_end - vma->vm_start,
- (unsigned long) PAGE_SIZE);
- ret = -EFAULT;
- goto bail;
- }
-
- if (vma->vm_flags & VM_WRITE) {
- dev_info(&dd->pcidev->dev,
- "Can't map pioavailregs as writable (flags=%lx)\n",
- vma->vm_flags);
- ret = -EPERM;
- goto bail;
- }
-
- /* don't allow them to later change with mprotect */
- vma->vm_flags &= ~VM_MAYWRITE;
-
- ret = remap_pfn_range(vma, vma->vm_start,
- dd->ipath_pioavailregs_phys >> PAGE_SHIFT,
- PAGE_SIZE, vma->vm_page_prot);
-bail:
- return ret;
-}
-