1 /* $NetBSD: ixp425_space.c,v 1.6 2006/04/10 03:36:03 simonb Exp $ */
5 * Ichiro FUKUHARA <ichiro@ichiro.org>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Ichiro FUKUHARA.
19 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
40 * bus_space I/O functions for ixp425
43 #include <sys/param.h>
44 #include <sys/systm.h>
47 #include <machine/pcb.h>
50 #include <vm/vm_kern.h>
52 #include <vm/vm_page.h>
53 #include <vm/vm_extern.h>
55 #include <machine/bus.h>
57 #include <arm/xscale/ixp425/ixp425reg.h>
58 #include <arm/xscale/ixp425/ixp425var.h>
60 /* Proto types for all the bus_space structure functions */
63 bs_protos(generic_armv4);
65 struct bus_space ixp425_bs_tag = {
67 .bs_cookie = (void *) 0,
69 /* mapping/unmapping */
70 .bs_map = ixp425_bs_map,
71 .bs_unmap = ixp425_bs_unmap,
72 .bs_subregion = ixp425_bs_subregion,
74 /* allocation/deallocation */
75 .bs_alloc = ixp425_bs_alloc,
76 .bs_free = ixp425_bs_free,
79 .bs_barrier = ixp425_bs_barrier,
82 .bs_r_1 = generic_bs_r_1,
83 .bs_r_2 = generic_armv4_bs_r_2,
84 .bs_r_4 = generic_bs_r_4,
88 .bs_rm_1 = generic_bs_rm_1,
89 .bs_rm_2 = generic_armv4_bs_rm_2,
90 .bs_rm_4 = generic_bs_rm_4,
94 .bs_rr_1 = generic_bs_rr_1,
95 .bs_rr_2 = generic_armv4_bs_rr_2,
96 .bs_rr_4 = generic_bs_rr_4,
100 .bs_w_1 = generic_bs_w_1,
101 .bs_w_2 = generic_armv4_bs_w_2,
102 .bs_w_4 = generic_bs_w_4,
106 .bs_wm_1 = generic_bs_wm_1,
107 .bs_wm_2 = generic_armv4_bs_wm_2,
108 .bs_wm_4 = generic_bs_wm_4,
112 .bs_wr_1 = generic_bs_wr_1,
113 .bs_wr_2 = generic_armv4_bs_wr_2,
114 .bs_wr_4 = generic_bs_wr_4,
118 /* XXX not implemented */
122 .bs_sr_2 = generic_armv4_bs_sr_2,
123 .bs_sr_4 = generic_bs_sr_4,
128 .bs_c_2 = generic_armv4_bs_c_2,
134 ixp425_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
135 int cacheable, bus_space_handle_t *bshp)
137 const struct pmap_devmap *pd;
138 vm_paddr_t startpa, endpa, pa, offset;
142 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) {
143 /* Device was statically mapped. */
144 *bshp = pd->pd_va + (bpa - pd->pd_pa);
148 endpa = round_page(bpa + size);
149 offset = bpa & PAGE_MASK;
150 startpa = trunc_page(bpa);
152 va = kmem_alloc(kernel_map, endpa - startpa);
158 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
161 *pte &= ~L2_S_CACHE_MASK;
169 ixp425_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
171 vm_offset_t va, endva;
173 if (pmap_devmap_find_va((vm_offset_t)t, size) != NULL) {
174 /* Device was statically mapped; nothing to do. */
178 endva = round_page((vm_offset_t)t + size);
179 va = trunc_page((vm_offset_t)t);
185 kmem_free(kernel_map, va, endva - va);
189 ixp425_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
190 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int cacheable,
191 bus_addr_t *bpap, bus_space_handle_t *bshp)
193 panic("ixp425_bs_alloc(): not implemented");
197 ixp425_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
199 panic("ixp425_bs_free(): not implemented");
203 ixp425_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
204 bus_size_t size, bus_space_handle_t *nbshp)
206 *nbshp = bsh + offset;
211 ixp425_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
212 bus_size_t len, int flags)