1/*	$OpenBSD: armv7_space.c,v 1.11 2022/03/06 12:16:27 kettenis Exp $ */
2
3/*
4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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
23 *    written permission.
24 *
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.
36 */
37/*
38 * Copyright (c) 1997 Mark Brinicombe.
39 * Copyright (c) 1997 Causality Limited.
40 * All rights reserved.
41 *
42 * This code is derived from software contributed to The NetBSD Foundation
43 * by Ichiro FUKUHARA.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 *    notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 *    notice, this list of conditions and the following disclaimer in the
52 *    documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 *    must display the following acknowledgement:
55 *	This product includes software developed by Mark Brinicombe.
56 * 4. The name of the company nor the name of the author may be used to
57 *    endorse or promote products derived from this software without specific
58 *    prior written permission.
59 *
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
62 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70 * SUCH DAMAGE.
71 */
72
73/*
74 * bus_space functions for Intel PXA2[51]0 application processor.
75 * Derived from i80321_space.c.
76 */
77
78#include <sys/param.h>
79#include <sys/systm.h>
80
81#include <uvm/uvm_extern.h>
82
83#include <machine/bus.h>
84
85/* Prototypes for all the bus_space structure functions */
86bs_protos(armv7);
87bs_protos(generic);
88bs_protos(bs_notimpl);
89
90struct bus_space armv7_bs_tag = {
91	/* cookie */
92	(void *) 0,
93
94	/* mapping/unmapping */
95	armv7_bs_map,
96	armv7_bs_unmap,
97	armv7_bs_subregion,
98
99	/* allocation/deallocation */
100	armv7_bs_alloc,		/* not implemented */
101	armv7_bs_free,		/* not implemented */
102
103	/* get kernel virtual address */
104	armv7_bs_vaddr,
105
106	/* mmap */
107	bs_notimpl_bs_mmap,
108
109	/* barrier */
110	armv7_bs_barrier,
111
112	/* read (single) */
113	armv7_bs_r_1,
114	armv7_bs_r_2,
115	armv7_bs_r_4,
116	bs_notimpl_bs_r_8,
117
118	/* read multiple */
119	armv7_bs_rm_1,
120	armv7_bs_rm_2,
121	armv7_bs_rm_4,
122	bs_notimpl_bs_rm_8,
123
124	/* read region */
125	armv7_bs_rr_1,
126	armv7_bs_rr_2,
127	armv7_bs_rr_4,
128	bs_notimpl_bs_rr_8,
129
130	/* write (single) */
131	armv7_bs_w_1,
132	armv7_bs_w_2,
133	armv7_bs_w_4,
134	bs_notimpl_bs_w_8,
135
136	/* write multiple */
137	armv7_bs_wm_1,
138	armv7_bs_wm_2,
139	armv7_bs_wm_4,
140	bs_notimpl_bs_wm_8,
141
142	/* write region */
143	armv7_bs_wr_1,
144	armv7_bs_wr_2,
145	armv7_bs_wr_4,
146	bs_notimpl_bs_wr_8,
147
148	/* set multiple */
149	bs_notimpl_bs_sm_1,
150	bs_notimpl_bs_sm_2,
151	bs_notimpl_bs_sm_4,
152	bs_notimpl_bs_sm_8,
153
154	/* set region */
155	armv7_bs_sr_1,
156	armv7_bs_sr_2,
157	armv7_bs_sr_4,
158	bs_notimpl_bs_sr_8,
159
160	/* copy */
161	bs_notimpl_bs_c_1,
162	armv7_bs_c_2,
163	bs_notimpl_bs_c_4,
164	bs_notimpl_bs_c_8,
165};
166struct bus_space *fdt_cons_bs_tag = &armv7_bs_tag;
167
168int
169armv7_bs_map(void *t, uint64_t bpa, bus_size_t size,
170	      int flags, bus_space_handle_t *bshp)
171{
172	u_long startpa, endpa, pa;
173	vaddr_t va;
174	int pmap_flags = PMAP_DEVICE;
175
176	startpa = trunc_page(bpa);
177	endpa = round_page(bpa + size);
178
179	/* XXX use extent manager to check duplicate mapping */
180
181	va = (vaddr_t)km_alloc(endpa - startpa, &kv_any, &kp_none, &kd_nowait);
182	if (va == 0)
183		return(ENOMEM);
184
185	*bshp = (bus_space_handle_t)(va + (bpa - startpa));
186
187	if (flags & BUS_SPACE_MAP_CACHEABLE)
188		pmap_flags = 0;
189
190	for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE)
191		pmap_kenter_pa(va, pa | pmap_flags, PROT_READ | PROT_WRITE);
192	pmap_update(pmap_kernel());
193
194	return(0);
195}
196
197void
198armv7_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
199{
200	vaddr_t	va, endva;
201
202	va = trunc_page((vaddr_t)bsh);
203	endva = round_page((vaddr_t)bsh + size);
204
205	pmap_kremove(va, endva - va);
206	pmap_update(pmap_kernel());
207
208	km_free((void *)va, endva - va, &kv_any, &kp_none);
209}
210
211int
212armv7_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
213    bus_size_t size, bus_space_handle_t *nbshp)
214{
215
216	*nbshp = bsh + offset;
217	return (0);
218}
219
220void
221armv7_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
222    bus_size_t len, int flags)
223{
224	cpu_drain_writebuf();
225}
226
227void *
228armv7_bs_vaddr(void *t, bus_space_handle_t bsh)
229{
230
231	return ((void *)bsh);
232}
233
234
235int
236armv7_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
237    bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
238    bus_addr_t *bpap, bus_space_handle_t *bshp)
239{
240
241	panic("armv7_io_bs_alloc(): not implemented");
242}
243
244void
245armv7_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
246{
247
248	panic("armv7_io_bs_free(): not implemented");
249}
250
251