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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 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <ddi.h> |
35 | #include <ddi.h> |
36 | #include <libc.h> |
36 | #include <libc.h> |
37 | #include <task.h> |
37 | #include <task.h> |
- | 38 | #include <as.h> |
|
- | 39 | #include <align.h> |
|
- | 40 | #include <libarch/config.h> |
|
38 | #include <kernel/ddi/ddi_arg.h> |
41 | #include <kernel/ddi/ddi_arg.h> |
39 | 42 | ||
40 | /** Map piece of physical memory to task. |
43 | /** Map piece of physical memory to task. |
41 | * |
44 | * |
42 | * Caller of this function must have the CAP_MEM_MANAGER capability. |
45 | * Caller of this function must have the CAP_MEM_MANAGER capability. |
43 | * |
46 | * |
44 | * @param pf Physical address of the starting frame. |
47 | * @param pf Physical address of the starting frame. |
45 | * @param vp Virtual address of the sterting page. |
48 | * @param vp Virtual address of the starting page. |
46 | * @param pages Number of pages to map. |
49 | * @param pages Number of pages to map. |
47 | * @param flags Flags for the new address space area. |
50 | * @param flags Flags for the new address space area. |
48 | * |
51 | * |
49 | * @return 0 on success, EPERM if the caller lacks the CAP_MEM_MANAGER capability, |
52 | * @return 0 on success, EPERM if the caller lacks the |
- | 53 | * CAP_MEM_MANAGER capability, ENOENT if there is no task |
|
50 | * ENOENT if there is no task with specified ID and ENOMEM if there |
54 | * with specified ID and ENOMEM if there was some problem |
51 | * was some problem in creating address space area. |
55 | * in creating address space area. |
52 | */ |
56 | */ |
53 | int physmem_map(void *pf, void *vp, unsigned long pages, int flags) |
57 | int physmem_map(void *pf, void *vp, unsigned long pages, int flags) |
54 | { |
58 | { |
55 | return __SYSCALL4(SYS_PHYSMEM_MAP, (sysarg_t) pf, (sysarg_t) vp, pages, flags); |
59 | return __SYSCALL4(SYS_PHYSMEM_MAP, (sysarg_t) pf, (sysarg_t) vp, pages, |
- | 60 | flags); |
|
56 | } |
61 | } |
57 | 62 | ||
58 | /** Enable I/O space range to task. |
63 | /** Enable I/O space range to task. |
59 | * |
64 | * |
60 | * Caller of this function must have the IO_MEM_MANAGER capability. |
65 | * Caller of this function must have the IO_MEM_MANAGER capability. |
61 | * |
66 | * |
62 | * @param id Task ID. |
67 | * @param id Task ID. |
63 | * @param ioaddr Starting address of the I/O range. |
68 | * @param ioaddr Starting address of the I/O range. |
64 | * @param size Size of the range. |
69 | * @param size Size of the range. |
65 | * |
70 | * |
66 | * @return 0 on success, EPERM if the caller lacks the CAP_IO_MANAGER capability, |
71 | * @return 0 on success, EPERM if the caller lacks the |
- | 72 | * CAP_IO_MANAGER capability, ENOENT if there is no task |
|
67 | * ENOENT if there is no task with specified ID and ENOMEM if there |
73 | * with specified ID and ENOMEM if there was some problem |
68 | * was some problem in allocating memory. |
74 | * in allocating memory. |
69 | */ |
75 | */ |
70 | int iospace_enable(task_id_t id, void *ioaddr, unsigned long size) |
76 | int iospace_enable(task_id_t id, void *ioaddr, unsigned long size) |
71 | { |
77 | { |
72 | ddi_ioarg_t arg; |
78 | ddi_ioarg_t arg; |
73 | 79 | ||
74 | arg.task_id = id; |
80 | arg.task_id = id; |
75 | arg.ioaddr = ioaddr; |
81 | arg.ioaddr = ioaddr; |
76 | arg.size = size; |
82 | arg.size = size; |
77 | 83 | ||
78 | return __SYSCALL1(SYS_IOSPACE_ENABLE, (sysarg_t) &arg); |
84 | return __SYSCALL1(SYS_IOSPACE_ENABLE, (sysarg_t) &arg); |
79 | } |
85 | } |
80 | 86 | ||
81 | /** Interrupt control |
87 | /** Interrupt control |
82 | * |
88 | * |
83 | * @param enable 1 - enable interrupts, 0 - disable interrupts |
89 | * @param enable 1 - enable interrupts, 0 - disable interrupts |
84 | */ |
90 | */ |
85 | int preemption_control(int enable) |
91 | int preemption_control(int enable) |
86 | { |
92 | { |
87 | return __SYSCALL1(SYS_PREEMPT_CONTROL, (sysarg_t) enable); |
93 | return __SYSCALL1(SYS_PREEMPT_CONTROL, (sysarg_t) enable); |
88 | } |
94 | } |
- | 95 | ||
- | 96 | /** Enable PIO for specified I/O range. |
|
- | 97 | * |
|
- | 98 | * @param pio_addr I/O start address. |
|
- | 99 | * @param size Size of the I/O region. |
|
- | 100 | * @param use_addr Address where the final address for application's PIO |
|
- | 101 | * will be stored. |
|
- | 102 | * |
|
- | 103 | * @return Zero on success or negative error code. |
|
- | 104 | */ |
|
- | 105 | int pio_enable(void *pio_addr, size_t size, void **use_addr) |
|
- | 106 | { |
|
- | 107 | void *phys; |
|
- | 108 | void *virt; |
|
- | 109 | size_t offset; |
|
- | 110 | unsigned int pages; |
|
- | 111 | ||
- | 112 | #ifdef IO_SPACE_BOUNDARY |
|
- | 113 | if (pio_addr < IO_SPACE_BOUNDARY) { |
|
- | 114 | *use_addr = pio_addr; |
|
- | 115 | return iospace_enable(task_get_id(), pio_addr, size); |
|
- | 116 | } |
|
- | 117 | #endif |
|
- | 118 | ||
- | 119 | phys = ALIGN_DOWN((uintptr_t) pio_addr, PAGE_SIZE); |
|
- | 120 | offset = pio_addr - phys; |
|
- | 121 | pages = ALIGN_UP(offset + size, PAGE_SIZE) >> PAGE_WIDTH; |
|
- | 122 | virt = as_get_mappable_page(pages); |
|
- | 123 | *use_addr = virt + offset; |
|
- | 124 | return physmem_map(phys, virt, pages, AS_AREA_READ | AS_AREA_WRITE); |
|
- | 125 | } |
|
89 | 126 | ||
90 | /** @} |
127 | /** @} |
91 | */ |
128 | */ |
92 | 129 |