Subversion Repositories HelenOS

Rev

Rev 4403 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1180 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1180 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1653 cejka 27
 */
28
 
1719 decky 29
/** @addtogroup libc
1653 cejka 30
 * @{
31
 */
32
/** @file
1180 jermar 33
 */
34
 
35
#include <ddi.h>
4024 jermar 36
#include <libarch/ddi.h>
1180 jermar 37
#include <libc.h>
38
#include <task.h>
3986 jermar 39
#include <as.h>
40
#include <align.h>
41
#include <libarch/config.h>
1180 jermar 42
#include <kernel/ddi/ddi_arg.h>
43
 
4148 decky 44
/** Return unique device number.
45
 *
46
 * @return New unique device number.
47
 *
48
 */
49
int device_assign_devno(void)
50
{
51
    return __SYSCALL0(SYS_DEVICE_ASSIGN_DEVNO);
52
}
53
 
1180 jermar 54
/** Map piece of physical memory to task.
55
 *
56
 * Caller of this function must have the CAP_MEM_MANAGER capability.
57
 *
3986 jermar 58
 * @param pf        Physical address of the starting frame.
59
 * @param vp        Virtual address of the starting page.
60
 * @param pages     Number of pages to map.
61
 * @param flags     Flags for the new address space area.
1180 jermar 62
 *
3986 jermar 63
 * @return      0 on success, EPERM if the caller lacks the
64
 *          CAP_MEM_MANAGER capability, ENOENT if there is no task
65
 *          with specified ID and ENOMEM if there was some problem
66
 *          in creating address space area.
1180 jermar 67
 */
2012 jermar 68
int physmem_map(void *pf, void *vp, unsigned long pages, int flags)
1180 jermar 69
{
3986 jermar 70
    return __SYSCALL4(SYS_PHYSMEM_MAP, (sysarg_t) pf, (sysarg_t) vp, pages,
71
        flags);
1180 jermar 72
}
1192 jermar 73
 
74
/** Enable I/O space range to task.
75
 *
76
 * Caller of this function must have the IO_MEM_MANAGER capability.
77
 *
3986 jermar 78
 * @param id        Task ID.
79
 * @param ioaddr    Starting address of the I/O range.
80
 * @param size      Size of the range.
1192 jermar 81
 *
3986 jermar 82
 * @return      0 on success, EPERM if the caller lacks the
83
 *          CAP_IO_MANAGER capability, ENOENT if there is no task
84
 *          with specified ID and ENOMEM if there was some problem
85
 *          in allocating memory.
1192 jermar 86
 */
1254 jermar 87
int iospace_enable(task_id_t id, void *ioaddr, unsigned long size)
1192 jermar 88
{
89
    ddi_ioarg_t arg;
90
 
91
    arg.task_id = id;
92
    arg.ioaddr = ioaddr;
93
    arg.size = size;
94
 
1254 jermar 95
    return __SYSCALL1(SYS_IOSPACE_ENABLE, (sysarg_t) &arg);
1192 jermar 96
}
1213 palkovsky 97
 
98
/** Interrupt control
99
 *
3986 jermar 100
 * @param enable    1 - enable interrupts, 0 - disable interrupts
1213 palkovsky 101
 */
1279 palkovsky 102
int preemption_control(int enable)
1213 palkovsky 103
{
1279 palkovsky 104
    return __SYSCALL1(SYS_PREEMPT_CONTROL, (sysarg_t) enable);
1213 palkovsky 105
}
1653 cejka 106
 
3986 jermar 107
/** Enable PIO for specified I/O range.
108
 *
109
 * @param pio_addr  I/O start address.
110
 * @param size      Size of the I/O region.
111
 * @param use_addr  Address where the final address for application's PIO
112
 *          will be stored.
113
 *
114
 * @return      Zero on success or negative error code.
115
 */
116
int pio_enable(void *pio_addr, size_t size, void **use_addr)
117
{
118
    void *phys;
119
    void *virt;
120
    size_t offset;
121
    unsigned int pages;
122
 
123
#ifdef IO_SPACE_BOUNDARY
124
    if (pio_addr < IO_SPACE_BOUNDARY) {
125
        *use_addr = pio_addr;
126
        return iospace_enable(task_get_id(), pio_addr, size);
127
    }
128
#endif
129
 
4469 decky 130
    phys = (void *) ALIGN_DOWN((uintptr_t) pio_addr, PAGE_SIZE);
3986 jermar 131
    offset = pio_addr - phys;
132
    pages = ALIGN_UP(offset + size, PAGE_SIZE) >> PAGE_WIDTH;
4403 svoboda 133
    virt = as_get_mappable_page(pages << PAGE_WIDTH);
3986 jermar 134
    *use_addr = virt + offset;
135
    return physmem_map(phys, virt, pages, AS_AREA_READ | AS_AREA_WRITE);
136
}
137
 
1719 decky 138
/** @}
1653 cejka 139
 */