1 /* $NetBSD: obio_space.c,v 1.6 2003/07/15 00:25:05 lukem Exp $ */
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
39 * bus_space functions for IQ80321 on-board devices
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
46 #include <sys/systm.h>
49 #include <machine/pcb.h>
53 #include <vm/vm_kern.h>
54 #include <vm/vm_extern.h>
56 #include <machine/bus.h>
58 /* Prototypes for all the bus_space structure functions */
61 bs_protos(generic_armv4);
64 * The obio bus space tag. This is constant for all instances, so
65 * we never have to explicitly "create" it.
67 struct bus_space obio_bs_tag = {
71 /* mapping/unmapping */
76 /* allocation/deallocation */
103 generic_armv4_bs_w_2,
139 obio_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
140 bus_space_handle_t *bshp)
142 const struct pmap_devmap *pd;
143 vm_paddr_t startpa, endpa, pa, offset;
147 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) {
148 /* Device was statically mapped. */
149 *bshp = pd->pd_va + (bpa - pd->pd_pa);
153 endpa = round_page(bpa + size);
154 offset = bpa & PAGE_MASK;
155 startpa = trunc_page(bpa);
157 va = kmem_alloc(kernel_map, endpa - startpa);
163 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
166 *pte &= ~L2_S_CACHE_MASK;
174 obio_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size,
175 bus_size_t alignment, bus_size_t boundary, int flags, bus_addr_t *bpap,
176 bus_space_handle_t *bshp)
179 panic("obio_bs_alloc(): not implemented");
184 obio_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
186 vm_offset_t va, endva;
188 if (pmap_devmap_find_va((vm_offset_t)t, size) != NULL) {
189 /* Device was statically mapped; nothing to do. */
193 endva = round_page((vm_offset_t)t + size);
194 va = trunc_page((vm_offset_t)t);
200 kmem_free(kernel_map, va, endva - va);
204 obio_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
207 panic("obio_bs_free(): not implemented");
211 obio_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
212 bus_size_t size, bus_space_handle_t *nbshp)
215 *nbshp = bsh + offset;
220 obio_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
221 bus_size_t len, int flags)