ppc/pnv: Add support for POWER8+ LPC Controller
[qemu.git] / tests / libqos / fw_cfg.c
1 /*
2 * libqos fw_cfg support
3 *
4 * Copyright IBM, Corp. 2012-2013
5 * Copyright (C) 2013 Red Hat Inc.
6 *
7 * Authors:
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Markus Armbruster <armbru@redhat.com>
10 *
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
13 */
14
15 #include "qemu/osdep.h"
16 #include "libqos/fw_cfg.h"
17 #include "libqtest.h"
18 #include "qemu/bswap.h"
19
20 void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
21 {
22 fw_cfg->select(fw_cfg, key);
23 }
24
25 void qfw_cfg_read_data(QFWCFG *fw_cfg, void *data, size_t len)
26 {
27 fw_cfg->read(fw_cfg, data, len);
28 }
29
30 void qfw_cfg_get(QFWCFG *fw_cfg, uint16_t key, void *data, size_t len)
31 {
32 qfw_cfg_select(fw_cfg, key);
33 qfw_cfg_read_data(fw_cfg, data, len);
34 }
35
36 uint16_t qfw_cfg_get_u16(QFWCFG *fw_cfg, uint16_t key)
37 {
38 uint16_t value;
39 qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
40 return le16_to_cpu(value);
41 }
42
43 uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key)
44 {
45 uint32_t value;
46 qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
47 return le32_to_cpu(value);
48 }
49
50 uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key)
51 {
52 uint64_t value;
53 qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
54 return le64_to_cpu(value);
55 }
56
57 static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
58 {
59 writew(fw_cfg->base, key);
60 }
61
62 static void mm_fw_cfg_read(QFWCFG *fw_cfg, void *data, size_t len)
63 {
64 uint8_t *ptr = data;
65 int i;
66
67 for (i = 0; i < len; i++) {
68 ptr[i] = readb(fw_cfg->base + 2);
69 }
70 }
71
72 QFWCFG *mm_fw_cfg_init(uint64_t base)
73 {
74 QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
75
76 fw_cfg->base = base;
77 fw_cfg->select = mm_fw_cfg_select;
78 fw_cfg->read = mm_fw_cfg_read;
79
80 return fw_cfg;
81 }
82
83 static void io_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
84 {
85 outw(fw_cfg->base, key);
86 }
87
88 static void io_fw_cfg_read(QFWCFG *fw_cfg, void *data, size_t len)
89 {
90 uint8_t *ptr = data;
91 int i;
92
93 for (i = 0; i < len; i++) {
94 ptr[i] = inb(fw_cfg->base + 1);
95 }
96 }
97
98 QFWCFG *io_fw_cfg_init(uint16_t base)
99 {
100 QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
101
102 fw_cfg->base = base;
103 fw_cfg->select = io_fw_cfg_select;
104 fw_cfg->read = io_fw_cfg_read;
105
106 return fw_cfg;
107 }