void
OS_UnmapPage(Mapping mapping) // IN
{
pmap_qremove((vm_offset_t)mapping, 1);
#if __FreeBSD_version < 1000000
kmem_free(kernel_map, (vm_offset_t)mapping, PAGE_SIZE);
#else
kva_free((vm_offset_t)mapping, PAGE_SIZE);
#endif
}
static void
at91_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
{
vm_offset_t va, endva;
va = trunc_page((vm_offset_t)t);
endva = va + round_page(size);
/* Free the kernel virtual mapping. */
kva_free(va, endva - va);
}
void
i81342_mem_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size)
{
#if 0
vm_offset_t va, endva;
va = trunc_page((vm_offset_t)h);
endva = va + round_page(size);
/* Free the kernel virtual mapping. */
kva_free(va, endva - va);
#endif
}
/*
* Unmap device memory and free the kva space.
*/
void
pmap_unmapdev(vm_offset_t va, vm_size_t size)
{
vm_offset_t offset;
/* Nothing to do if we find the mapping in the static table. */
if (devmap_vtop((void*)va, size) != DEVMAP_PADDR_NOTFOUND)
return;
offset = va & PAGE_MASK;
va = trunc_page(va);
size = round_page(size + offset);
pmap_kremove_device(va, size);
kva_free(va, size);
}
static int
spigen_close(struct cdev *cdev, int fflag, int devtype, struct thread *td)
{
device_t dev = cdev->si_drv1;
struct spigen_softc *sc = device_get_softc(dev);
mtx_lock(&sc->sc_mtx);
if (sc->sc_mmap_buffer != NULL) {
pmap_qremove(sc->sc_mmap_kvaddr,
sc->sc_mmap_buffer_size / PAGE_SIZE);
kva_free(sc->sc_mmap_kvaddr, sc->sc_mmap_buffer_size);
sc->sc_mmap_kvaddr = 0;
vm_object_deallocate(sc->sc_mmap_buffer);
sc->sc_mmap_buffer = NULL;
sc->sc_mmap_buffer_size = 0;
}
mtx_unlock(&sc->sc_mtx);
return (0);
}
int
sparc64_bus_mem_unmap(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t size)
{
vm_offset_t sva;
vm_offset_t va;
vm_offset_t endva;
if (tag->bst_cookie == NULL ||
(sva = (vm_offset_t)rman_get_virtual(tag->bst_cookie)) == 0)
return (0);
sva = trunc_page(sva);
endva = sva + round_page(size);
for (va = sva; va < endva; va += PAGE_SIZE)
pmap_kremove_flags(va);
tlb_range_demap(kernel_pmap, sva, sva + size - 1);
kva_free(sva, size);
return (0);
}
