Subversion Repositories HelenOS

Rev

Rev 2927 | Rev 4345 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2927 Rev 4344
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