Annotation of sys/arch/arm/s3c2xx0/s3c2xx0_space.c, Revision 1.1.1.1
1.1 nbrk 1: /* $NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $ */
2:
3: /*
4: * Copyright (c) 2002 Fujitsu Component Limited
5: * Copyright (c) 2002 Genetec Corporation
6: * All rights reserved.
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. Neither the name of The Fujitsu Component Limited nor the name of
17: * Genetec corporation may not be used to endorse or promote products
18: * derived from this software without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
21: * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24: * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
25: * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: */
34: /* derived from sa11x0_io.c */
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:
72: /*
73: * bus_space functions for Samsung S3C2800/2400/2410.
74: */
75:
76: #include <sys/cdefs.h>
77: __KERNEL_RCSID(0, "$NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $");
78:
79: #include <sys/param.h>
80: #include <sys/systm.h>
81:
82: #include <uvm/uvm_extern.h>
83:
84: #include <machine/bus.h>
85:
86: /* Prototypes for all the bus_space structure functions */
87: bs_protos(s3c2xx0);
88: bs_protos(generic);
89: bs_protos(generic_armv4);
90: bs_protos(bs_notimpl);
91:
92: struct bus_space s3c2xx0_bs_tag = {
93: /* cookie */
94: (void *) 0,
95:
96: /* mapping/unmapping */
97: s3c2xx0_bs_map,
98: s3c2xx0_bs_unmap,
99: s3c2xx0_bs_subregion,
100:
101: /* allocation/deallocation */
102: s3c2xx0_bs_alloc, /* not implemented */
103: s3c2xx0_bs_free, /* not implemented */
104:
105: /* get kernel virtual address */
106: s3c2xx0_bs_vaddr,
107:
108: /* mmap */
109: bs_notimpl_bs_mmap,
110:
111: /* barrier */
112: s3c2xx0_bs_barrier,
113:
114: /* read (single) */
115: generic_bs_r_1,
116: generic_armv4_bs_r_2,
117: generic_bs_r_4,
118: bs_notimpl_bs_r_8,
119:
120: /* read multiple */
121: generic_bs_rm_1,
122: generic_armv4_bs_rm_2,
123: generic_bs_rm_4,
124: bs_notimpl_bs_rm_8,
125:
126: /* read region */
127: generic_bs_rr_1,
128: generic_armv4_bs_rr_2,
129: generic_bs_rr_4,
130: bs_notimpl_bs_rr_8,
131:
132: /* write (single) */
133: generic_bs_w_1,
134: generic_armv4_bs_w_2,
135: generic_bs_w_4,
136: bs_notimpl_bs_w_8,
137:
138: /* write multiple */
139: generic_bs_wm_1,
140: generic_armv4_bs_wm_2,
141: generic_bs_wm_4,
142: bs_notimpl_bs_wm_8,
143:
144: /* write region */
145: generic_bs_wr_1,
146: generic_armv4_bs_wr_2,
147: generic_bs_wr_4,
148: bs_notimpl_bs_wr_8,
149:
150: /* set multiple */
151: bs_notimpl_bs_sm_1,
152: bs_notimpl_bs_sm_2,
153: bs_notimpl_bs_sm_4,
154: bs_notimpl_bs_sm_8,
155:
156: /* set region */
157: generic_bs_sr_1,
158: generic_armv4_bs_sr_2,
159: bs_notimpl_bs_sr_4,
160: bs_notimpl_bs_sr_8,
161:
162: /* copy */
163: bs_notimpl_bs_c_1,
164: generic_armv4_bs_c_2,
165: bs_notimpl_bs_c_4,
166: bs_notimpl_bs_c_8,
167: };
168:
169: int
170: s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
171: int flag, bus_space_handle_t * bshp)
172: {
173: u_long startpa, endpa, pa;
174: vaddr_t va;
175: pt_entry_t *pte;
176: const struct pmap_devmap *pd;
177:
178: if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) {
179: /* Device was statically mapped. */
180: *bshp = pd->pd_va + (bpa - pd->pd_pa);
181: return 0;
182: }
183: startpa = trunc_page(bpa);
184: endpa = round_page(bpa + size);
185:
186: /* XXX use extent manager to check duplicate mapping */
187:
188: va = uvm_km_alloc(kernel_map, endpa - startpa, 0,
189: UVM_KMF_VAONLY | UVM_KMF_NOWAIT);
190: if (!va)
191: return (ENOMEM);
192:
193: *bshp = (bus_space_handle_t) (va + (bpa - startpa));
194:
195: for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
196: pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE);
197: pte = vtopte(va);
198: if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0)
199: *pte &= ~L2_S_CACHE_MASK;
200: }
201: pmap_update(pmap_kernel());
202:
203: return (0);
204: }
205:
206: void
207: s3c2xx0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
208: {
209: vaddr_t va;
210: vaddr_t endva;
211:
212: if (pmap_devmap_find_va(bsh, size) != NULL) {
213: /* Device was statically mapped; nothing to do. */
214: return;
215: }
216:
217: endva = round_page(bsh + size);
218: va = trunc_page(bsh);
219:
220: pmap_kremove(va, endva - va);
221: pmap_update(pmap_kernel());
222: uvm_km_free(kernel_map, va, endva - va, UVM_KMF_VAONLY);
223: }
224:
225:
226: int
227: s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
228: bus_size_t size, bus_space_handle_t * nbshp)
229: {
230:
231: *nbshp = bsh + offset;
232: return (0);
233: }
234:
235: void
236: s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
237: bus_size_t len, int flags)
238: {
239:
240: /* Nothing to do. */
241: }
242:
243: void *
244: s3c2xx0_bs_vaddr(void *t, bus_space_handle_t bsh)
245: {
246:
247: return ((void *) bsh);
248: }
249:
250:
251: int
252: s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
253: bus_size_t size, bus_size_t alignment, bus_size_t boundary,
254: int flags, bus_addr_t * bpap, bus_space_handle_t * bshp)
255: {
256:
257: panic("s3c2xx0_io_bs_alloc(): not implemented\n");
258: }
259:
260: void
261: s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
262: {
263:
264: panic("s3c2xx0_io_bs_free(): not implemented\n");
265: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to s3c2xx0_space.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / arm / s3c2xx0