Annotation of sys/arch/arm/sa11x0/sa11x0_space.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: sa11x0_space.c,v 1.3 2005/07/18 02:43:24 fgsch Exp $ */
2: /* $NetBSD: sa11x0_space.c,v 1.5 2004/06/07 19:45:22 nathanw Exp $ */
3:
4: /*
5: * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
6: * All rights reserved.
7: *
8: * Written by Jason R. Thorpe for Wasabi Systems, Inc.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed for the NetBSD Project by
21: * Wasabi Systems, Inc.
22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
23: * or promote products derived from this software without specific prior
24: * written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
38: /*
39: * Copyright (c) 1997 Mark Brinicombe.
40: * Copyright (c) 1997 Causality Limited.
41: * All rights reserved.
42: *
43: * This code is derived from software contributed to The NetBSD Foundation
44: * by Ichiro FUKUHARA.
45: *
46: * Redistribution and use in source and binary forms, with or without
47: * modification, are permitted provided that the following conditions
48: * are met:
49: * 1. Redistributions of source code must retain the above copyright
50: * notice, this list of conditions and the following disclaimer.
51: * 2. Redistributions in binary form must reproduce the above copyright
52: * notice, this list of conditions and the following disclaimer in the
53: * documentation and/or other materials provided with the distribution.
54: * 3. All advertising materials mentioning features or use of this software
55: * must display the following acknowledgement:
56: * This product includes software developed by Mark Brinicombe.
57: * 4. The name of the company nor the name of the author may be used to
58: * endorse or promote products derived from this software without specific
59: * prior written permission.
60: *
61: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
62: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
63: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
64: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
65: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
66: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
67: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
71: * SUCH DAMAGE.
72: */
73:
74: /*
75: * bus_space functions for Intel PXA2[51]0 application processor.
76: * Derived from i80321_space.c.
77: */
78:
79: #include <sys/cdefs.h>
80: /*
81: __KERNEL_RCSID(0, "$NetBSD: sa11x0_space.c,v 1.5 2004/06/07 19:45:22 nathanw Exp $");
82: */
83:
84: #include <sys/param.h>
85: #include <sys/systm.h>
86:
87: #include <uvm/uvm_extern.h>
88:
89: #include <machine/bus.h>
90:
91: /* Prototypes for all the bus_space structure functions */
92: bs_protos(sa11x0);
93: bs_protos(generic);
94: bs_protos(generic_armv4);
95: bs_protos(bs_notimpl);
96:
97: struct bus_space sa11x0_bs_tag = {
98: /* cookie */
99: (void *) 0,
100:
101: /* mapping/unmapping */
102: sa11x0_bs_map,
103: sa11x0_bs_unmap,
104: sa11x0_bs_subregion,
105:
106: /* allocation/deallocation */
107: sa11x0_bs_alloc, /* not implemented */
108: sa11x0_bs_free, /* not implemented */
109:
110: /* get kernel virtual address */
111: sa11x0_bs_vaddr,
112:
113: /* mmap */
114: bs_notimpl_bs_mmap,
115:
116: /* barrier */
117: sa11x0_bs_barrier,
118:
119: /* read (single) */
120: bs_notimpl_bs_r_1,
121: bs_notimpl_bs_r_2,
122: generic_bs_r_4,
123: bs_notimpl_bs_r_8,
124:
125: /* read multiple */
126: bs_notimpl_bs_rm_1,
127: bs_notimpl_bs_rm_2,
128: generic_bs_rm_4,
129: bs_notimpl_bs_rm_8,
130:
131: /* read region */
132: /* XXX only word-wide transactions on APB */
133: generic_bs_rr_1,
134: generic_armv4_bs_rr_2,
135: generic_bs_rr_4,
136: bs_notimpl_bs_rr_8,
137:
138: /* write (single) */
139: bs_notimpl_bs_w_1,
140: bs_notimpl_bs_w_2,
141: generic_bs_w_4,
142: bs_notimpl_bs_w_8,
143:
144: /* write multiple */
145: bs_notimpl_bs_wm_1,
146: bs_notimpl_bs_wm_2,
147: generic_bs_wm_4,
148: bs_notimpl_bs_wm_8,
149:
150: /* write region */
151: /* XXX only word-wide transactions on APB */
152: generic_bs_wr_1,
153: generic_armv4_bs_wr_2,
154: generic_bs_wr_4,
155: bs_notimpl_bs_wr_8,
156:
157: /* set multiple */
158: bs_notimpl_bs_sm_1,
159: bs_notimpl_bs_sm_2,
160: bs_notimpl_bs_sm_4,
161: bs_notimpl_bs_sm_8,
162:
163: /* set region */
164: generic_bs_sr_1,
165: generic_armv4_bs_sr_2,
166: bs_notimpl_bs_sr_4,
167: bs_notimpl_bs_sr_8,
168:
169: /* copy */
170: bs_notimpl_bs_c_1,
171: generic_armv4_bs_c_2,
172: bs_notimpl_bs_c_4,
173: bs_notimpl_bs_c_8,
174: };
175:
176: int
177: sa11x0_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
178: int flag, bus_space_handle_t *bshp)
179: {
180: u_long startpa, endpa, pa;
181: vaddr_t va;
182: pt_entry_t *pte;
183:
184: if ((u_long)bpa > (u_long)KERNEL_BASE) {
185: /* Some IO registers (ex. UART ports for console)
186: are mapped to fixed address by board specific
187: routine. */
188: *bshp = bpa;
189: return(0);
190: }
191:
192: startpa = trunc_page(bpa);
193: endpa = round_page(bpa + size);
194:
195: /* XXX use extent manager to check duplicate mapping */
196:
197: va = uvm_km_valloc(kernel_map, endpa - startpa);
198: if (! va)
199: return(ENOMEM);
200:
201: *bshp = (bus_space_handle_t)(va + (bpa - startpa));
202:
203: for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
204: pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE);
205: if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) {
206: pte = vtopte(va);
207: *pte &= ~L2_S_CACHE_MASK;
208: PTE_SYNC(pte);
209: /* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of
210: * waste.
211: */
212: }
213: }
214: pmap_update(pmap_kernel());
215:
216: return(0);
217: }
218:
219: void
220: sa11x0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
221: {
222:
223: if (bsh > (u_long)KERNEL_BASE)
224: return;
225:
226: uvm_km_free(kernel_map, bsh, size);
227: }
228:
229:
230: int
231: sa11x0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
232: bus_size_t size, bus_space_handle_t *nbshp)
233: {
234:
235: *nbshp = bsh + offset;
236: return (0);
237: }
238:
239: void
240: sa11x0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
241: bus_size_t len, int flags)
242: {
243:
244: /* Nothing to do. */
245: }
246:
247: void *
248: sa11x0_bs_vaddr(void *t, bus_space_handle_t bsh)
249: {
250:
251: return ((void *)bsh);
252: }
253:
254:
255: int
256: sa11x0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
257: bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
258: bus_addr_t *bpap, bus_space_handle_t *bshp)
259: {
260:
261: panic("sa11x0_io_bs_alloc(): not implemented");
262: }
263:
264: void
265: sa11x0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
266: {
267:
268: panic("sa11x0_io_bs_free(): not implemented");
269: }
270:
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