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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <ddi/ddi.h> |
29 | #include <ddi/ddi.h> |
30 | #include <proc/task.h> |
30 | #include <proc/task.h> |
31 | #include <arch/types.h> |
31 | #include <arch/types.h> |
32 | #include <typedefs.h> |
32 | #include <typedefs.h> |
33 | #include <adt/bitmap.h> |
33 | #include <adt/bitmap.h> |
34 | #include <mm/slab.h> |
34 | #include <mm/slab.h> |
35 | #include <arch/pm.h> |
35 | #include <arch/pm.h> |
36 | #include <errno.h> |
36 | #include <errno.h> |
- | 37 | #include <arch/cpu.h> |
|
37 | 38 | ||
38 | /** Enable I/O space range for task. |
39 | /** Enable I/O space range for task. |
39 | * |
40 | * |
40 | * Interrupts are disabled and task is locked. |
41 | * Interrupts are disabled and task is locked. |
41 | * |
42 | * |
42 | * @param task Task. |
43 | * @param task Task. |
43 | * @param ioaddr Startign I/O space address. |
44 | * @param ioaddr Startign I/O space address. |
44 | * @param size Size of the enabled I/O range. |
45 | * @param size Size of the enabled I/O range. |
45 | * |
46 | * |
46 | * @return 0 on success or an error code from errno.h. |
47 | * @return 0 on success or an error code from errno.h. |
47 | */ |
48 | */ |
48 | int ddi_enable_iospace_arch(task_t *task, __address ioaddr, size_t size) |
49 | int ddi_enable_iospace_arch(task_t *task, __address ioaddr, size_t size) |
49 | { |
50 | { |
50 | count_t bits; |
51 | count_t bits; |
51 | 52 | ||
52 | bits = ioaddr + size; |
53 | bits = ioaddr + size; |
53 | if (bits > IO_PORTS) |
54 | if (bits > IO_PORTS) |
54 | return ENOENT; |
55 | return ENOENT; |
55 | 56 | ||
56 | if (task->arch.iomap.bits < bits) { |
57 | if (task->arch.iomap.bits < bits) { |
57 | bitmap_t oldiomap; |
58 | bitmap_t oldiomap; |
58 | __u8 *newmap; |
59 | __u8 *newmap; |
59 | 60 | ||
60 | /* |
61 | /* |
61 | * The I/O permission bitmap is too small and needs to be grown. |
62 | * The I/O permission bitmap is too small and needs to be grown. |
62 | */ |
63 | */ |
63 | 64 | ||
64 | newmap = (__u8 *) malloc(BITS2BYTES(bits), FRAME_ATOMIC); |
65 | newmap = (__u8 *) malloc(BITS2BYTES(bits), FRAME_ATOMIC); |
65 | if (!newmap) |
66 | if (!newmap) |
66 | return ENOMEM; |
67 | return ENOMEM; |
67 | 68 | ||
68 | bitmap_initialize(&oldiomap, task->arch.iomap.map, task->arch.iomap.bits); |
69 | bitmap_initialize(&oldiomap, task->arch.iomap.map, task->arch.iomap.bits); |
69 | bitmap_initialize(&task->arch.iomap, newmap, bits); |
70 | bitmap_initialize(&task->arch.iomap, newmap, bits); |
70 | 71 | ||
71 | /* |
72 | /* |
72 | * Mark the new range inaccessible. |
73 | * Mark the new range inaccessible. |
73 | */ |
74 | */ |
74 | bitmap_set_range(&task->arch.iomap, oldiomap.bits, bits - oldiomap.bits); |
75 | bitmap_set_range(&task->arch.iomap, oldiomap.bits, bits - oldiomap.bits); |
75 | 76 | ||
76 | /* |
77 | /* |
77 | * In case there really existed smaller iomap, |
78 | * In case there really existed smaller iomap, |
78 | * copy its contents and deallocate it. |
79 | * copy its contents and deallocate it. |
79 | */ |
80 | */ |
80 | if (oldiomap.bits) { |
81 | if (oldiomap.bits) { |
81 | bitmap_copy(&task->arch.iomap, &oldiomap, task->arch.iomap.bits); |
82 | bitmap_copy(&task->arch.iomap, &oldiomap, task->arch.iomap.bits); |
82 | free(oldiomap.map); |
83 | free(oldiomap.map); |
83 | } |
84 | } |
84 | } |
85 | } |
85 | 86 | ||
86 | /* |
87 | /* |
87 | * Enable the range and we are done. |
88 | * Enable the range and we are done. |
88 | */ |
89 | */ |
89 | bitmap_clear_range(&task->arch.iomap, (index_t) ioaddr, (count_t) size); |
90 | bitmap_clear_range(&task->arch.iomap, (index_t) ioaddr, (count_t) size); |
90 | 91 | ||
91 | return 0; |
92 | return 0; |
- | 93 | } |
|
- | 94 | ||
- | 95 | /** Enable/disable interrupts form syscall |
|
- | 96 | * |
|
- | 97 | * @param enable If non-zero, interrupts are enabled, otherwise disabled |
|
- | 98 | * @param flags CP0 flags register |
|
- | 99 | */ |
|
- | 100 | __native ddi_int_control_arch(__native enable, __native *flags) |
|
- | 101 | { |
|
- | 102 | if (enable) |
|
- | 103 | *flags |= RFLAGS_IF; |
|
- | 104 | else |
|
- | 105 | *flags &= ~RFLAGS_IF; |
|
- | 106 | return 0; |
|
92 | } |
107 | } |
93 | 108 |