Annotation of sys/arch/arm/sa11x0/sa11x1_space.c, Revision 1.2
1.2 ! nbrk 1: /* $Id: sa11x1_space.c,v 1.1.1.1 2008/03/04 16:05:17 nbrk Exp $ */
1.1 nbrk 2: /*
3: * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
4: * All rights reserved.
5: *
6: * Written by Jason R. Thorpe for Wasabi Systems, Inc.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
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 for the NetBSD Project by
19: * Wasabi Systems, Inc.
20: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
21: * or promote products derived from this software without specific prior
22: * written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
28: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34: * POSSIBILITY OF SUCH DAMAGE.
35: */
36: /*
37: * Copyright (c) 1997 Mark Brinicombe.
38: * Copyright (c) 1997 Causality Limited.
39: * All rights reserved.
40: *
41: * This code is derived from software contributed to The NetBSD Foundation
42: * by Ichiro FUKUHARA.
43: *
44: * Redistribution and use in source and binary forms, with or without
45: * modification, are permitted provided that the following conditions
46: * are met:
47: * 1. Redistributions of source code must retain the above copyright
48: * notice, this list of conditions and the following disclaimer.
49: * 2. Redistributions in binary form must reproduce the above copyright
50: * notice, this list of conditions and the following disclaimer in the
51: * documentation and/or other materials provided with the distribution.
52: * 3. All advertising materials mentioning features or use of this software
53: * must display the following acknowledgement:
54: * This product includes software developed by Mark Brinicombe.
55: * 4. The name of the company nor the name of the author may be used to
56: * endorse or promote products derived from this software without specific
57: * prior written permission.
58: *
59: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
60: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
61: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
63: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
64: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
65: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69: * SUCH DAMAGE.
70: */
71: #include <sys/cdefs.h>
72:
73: #include <sys/param.h>
74: #include <sys/systm.h>
75:
76: #include <uvm/uvm_extern.h>
77:
78: #include <machine/bus.h>
79:
1.2 ! nbrk 80: /* XXX */
! 81: uint8_t sa11x1_h_bs_r_1(void *t, bus_space_handle_t bsh, bus_size_t addr);
! 82:
1.1 nbrk 83: /* Prototypes for all the bus_space structure functions */
84: bs_protos(sa11x1);
85: bs_protos(generic);
86: bs_protos(generic_armv4);
87: bs_protos(bs_notimpl);
88:
89: struct bus_space sa11x1_bs_tag = {
90: /* cookie */
91: (void *) 0,
92:
93: /* mapping/unmapping */
94: sa11x1_bs_map,
95: sa11x1_bs_unmap,
96: sa11x1_bs_subregion,
97:
98: /* allocation/deallocation */
99: sa11x1_bs_alloc, /* not implemented */
100: sa11x1_bs_free, /* not implemented */
101:
102: /* get kernel virtual address */
103: sa11x1_bs_vaddr,
104:
105: /* mmap */
106: bs_notimpl_bs_mmap,
107:
108: /* barrier */
109: sa11x1_bs_barrier,
110:
111: /* read (single) */
1.2 ! nbrk 112: sa11x1_h_bs_r_1, /* XXX hack for pcmcia accesses */
1.1 nbrk 113: bs_notimpl_bs_r_2,
114: generic_bs_r_4,
115: bs_notimpl_bs_r_8,
116:
117: /* read multiple */
118: bs_notimpl_bs_rm_1,
119: bs_notimpl_bs_rm_2,
120: generic_bs_rm_4,
121: bs_notimpl_bs_rm_8,
122:
123: /* read region */
124: /* XXX only word-wide transactions on APB */
125: generic_bs_rr_1,
126: generic_armv4_bs_rr_2,
127: generic_bs_rr_4,
128: bs_notimpl_bs_rr_8,
129:
130: /* write (single) */
131: bs_notimpl_bs_w_1,
132: bs_notimpl_bs_w_2,
133: generic_bs_w_4,
134: bs_notimpl_bs_w_8,
135:
136: /* write multiple */
137: bs_notimpl_bs_wm_1,
138: bs_notimpl_bs_wm_2,
139: generic_bs_wm_4,
140: bs_notimpl_bs_wm_8,
141:
142: /* write region */
143: /* XXX only word-wide transactions on APB */
144: generic_bs_wr_1,
145: generic_armv4_bs_wr_2,
146: generic_bs_wr_4,
147: bs_notimpl_bs_wr_8,
148:
149: /* set multiple */
150: bs_notimpl_bs_sm_1,
151: bs_notimpl_bs_sm_2,
152: bs_notimpl_bs_sm_4,
153: bs_notimpl_bs_sm_8,
154:
155: /* set region */
156: generic_bs_sr_1,
157: generic_armv4_bs_sr_2,
158: bs_notimpl_bs_sr_4,
159: bs_notimpl_bs_sr_8,
160:
161: /* copy */
162: bs_notimpl_bs_c_1,
163: generic_armv4_bs_c_2,
164: bs_notimpl_bs_c_4,
165: bs_notimpl_bs_c_8,
166: };
167:
168: int
169: sa11x1_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
170: int flag, bus_space_handle_t *bshp)
171: {
172: u_long startpa, endpa, pa;
173: vaddr_t va;
174: pt_entry_t *pte;
175:
176: /* XXX add our base address so we can use offsets in our address space */
177: bpa = *(bus_addr_t *)sa11x1_bs_tag.bs_cookie + bpa;
178:
179: startpa = trunc_page(bpa);
180: endpa = round_page(bpa + size);
181:
182: /* XXX use extent manager to check duplicate mapping */
183:
184: va = uvm_km_valloc(kernel_map, endpa - startpa);
185: if (! va)
186: return(ENOMEM);
187:
188: *bshp = (bus_space_handle_t)(va + (bpa - startpa));
189:
190: for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
191: pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE);
192: if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) {
193: pte = vtopte(va);
194: *pte &= ~L2_S_CACHE_MASK;
195: PTE_SYNC(pte);
196: /* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of
197: * waste.
198: */
199: }
200: }
201: pmap_update(pmap_kernel());
202:
203: return(0);
204: }
205:
206: void
207: sa11x1_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
208: {
209:
210: if (bsh > (u_long)KERNEL_BASE)
211: return;
212:
213: uvm_km_free(kernel_map, bsh, size);
214: }
215:
216:
217: int
218: sa11x1_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
219: bus_size_t size, bus_space_handle_t *nbshp)
220: {
221:
222: *nbshp = bsh + offset;
223: return (0);
224: }
225:
226: void
227: sa11x1_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
228: bus_size_t len, int flags)
229: {
230:
231: /* Nothing to do. */
232: }
233:
234: void *
235: sa11x1_bs_vaddr(void *t, bus_space_handle_t bsh)
236: {
237:
238: return ((void *)bsh);
239: }
240:
241:
242: int
243: sa11x1_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
244: bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
245: bus_addr_t *bpap, bus_space_handle_t *bshp)
246: {
247:
248: panic("sa11x1_io_bs_alloc(): not implemented");
249: }
250:
251: void
252: sa11x1_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
253: {
254:
255: panic("sa11x1_io_bs_free(): not implemented");
1.2 ! nbrk 256: }
! 257:
! 258: uint8_t
! 259: sa11x1_h_bs_r_1(void *t, bus_space_handle_t bsh, bus_size_t addr)
! 260: {
! 261: return( bus_space_read_4((bus_space_tag_t)t, bsh, addr) & 0xff );
1.1 nbrk 262: }
263:
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