1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include <stdint.h>
#include <rtas.h>
#include <of.h>
#include <pci.h>
#include <string.h>
#include <kernel.h>
#include <cpu.h>
#include <cache.h>
int
pci_calc_bar_size(long long puid, int bus, int devfn, int bar)
{
int size;
int old;
bar = bar * 4 + 0x10;
old = rtas_pci_config_read(puid, 4, bus, devfn, bar);
rtas_pci_config_write(puid, 4, bus, devfn, bar, 0xffffffff);
size = (rtas_pci_config_read(puid, 4, bus, devfn, bar) & (-4)) * -1;
rtas_pci_config_write(puid, 4, bus, devfn, bar, old);
return size;
}
int
pci_get_bar_start(long long puid, int bus, int devfn, int bar)
{
return rtas_pci_config_read(puid, 4, bus, devfn, bar * 4 + 0x10);
}
void
pci_set_bar_start(long long puid, int bus, int devfn, int bar, int value)
{
rtas_pci_config_write(puid, 4, bus, devfn, bar * 4 + 0x10, value);
}
unsigned int
read_io(void *addr, size_t sz)
{
unsigned int ret;
switch (sz) {
case 1:
ret = ci_read_8(addr);
break;
case 2:
ret = ci_read_16(addr);
break;
case 4:
ret = ci_read_32(addr);
break;
default:
ret = 0;
}
return ret;
}
int
write_io(void *addr, unsigned int value, size_t sz)
{
switch (sz) {
case 1:
ci_write_8(addr, value);
break;
case 2:
ci_write_16(addr, value);
break;
case 4:
ci_write_32(addr, value);
break;
default:
return -1;
}
return 0;
}
|
