2 * Virtio Accessor Support: In case your target can change endian.
4 * Copyright IBM, Corp. 2013
7 * Rusty Russell <rusty@au.ibm.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 2 of the License, or
12 * (at your option) any later version.
15 #ifndef _QEMU_VIRTIO_ACCESS_H
16 #define _QEMU_VIRTIO_ACCESS_H
17 #include "hw/virtio/virtio.h"
18 #include "exec/address-spaces.h"
20 static inline bool virtio_access_is_big_endian(VirtIODevice
*vdev
)
22 #if defined(TARGET_IS_BIENDIAN)
23 return virtio_is_big_endian(vdev
);
24 #elif defined(TARGET_WORDS_BIGENDIAN)
31 static inline uint16_t virtio_lduw_phys(VirtIODevice
*vdev
, hwaddr pa
)
33 if (virtio_access_is_big_endian(vdev
)) {
34 return lduw_be_phys(&address_space_memory
, pa
);
36 return lduw_le_phys(&address_space_memory
, pa
);
39 static inline uint32_t virtio_ldl_phys(VirtIODevice
*vdev
, hwaddr pa
)
41 if (virtio_access_is_big_endian(vdev
)) {
42 return ldl_be_phys(&address_space_memory
, pa
);
44 return ldl_le_phys(&address_space_memory
, pa
);
47 static inline uint64_t virtio_ldq_phys(VirtIODevice
*vdev
, hwaddr pa
)
49 if (virtio_access_is_big_endian(vdev
)) {
50 return ldq_be_phys(&address_space_memory
, pa
);
52 return ldq_le_phys(&address_space_memory
, pa
);
55 static inline void virtio_stw_phys(VirtIODevice
*vdev
, hwaddr pa
,
58 if (virtio_access_is_big_endian(vdev
)) {
59 stw_be_phys(&address_space_memory
, pa
, value
);
61 stw_le_phys(&address_space_memory
, pa
, value
);
65 static inline void virtio_stl_phys(VirtIODevice
*vdev
, hwaddr pa
,
68 if (virtio_access_is_big_endian(vdev
)) {
69 stl_be_phys(&address_space_memory
, pa
, value
);
71 stl_le_phys(&address_space_memory
, pa
, value
);
75 static inline void virtio_stw_p(VirtIODevice
*vdev
, void *ptr
, uint16_t v
)
77 if (virtio_access_is_big_endian(vdev
)) {
84 static inline void virtio_stl_p(VirtIODevice
*vdev
, void *ptr
, uint32_t v
)
86 if (virtio_access_is_big_endian(vdev
)) {
93 static inline void virtio_stq_p(VirtIODevice
*vdev
, void *ptr
, uint64_t v
)
95 if (virtio_access_is_big_endian(vdev
)) {
102 static inline int virtio_lduw_p(VirtIODevice
*vdev
, const void *ptr
)
104 if (virtio_access_is_big_endian(vdev
)) {
105 return lduw_be_p(ptr
);
107 return lduw_le_p(ptr
);
111 static inline int virtio_ldl_p(VirtIODevice
*vdev
, const void *ptr
)
113 if (virtio_access_is_big_endian(vdev
)) {
114 return ldl_be_p(ptr
);
116 return ldl_le_p(ptr
);
120 static inline uint64_t virtio_ldq_p(VirtIODevice
*vdev
, const void *ptr
)
122 if (virtio_access_is_big_endian(vdev
)) {
123 return ldq_be_p(ptr
);
125 return ldq_le_p(ptr
);
129 static inline uint16_t virtio_tswap16(VirtIODevice
*vdev
, uint16_t s
)
131 #ifdef HOST_WORDS_BIGENDIAN
132 return virtio_access_is_big_endian(vdev
) ? s
: bswap16(s
);
134 return virtio_access_is_big_endian(vdev
) ? bswap16(s
) : s
;
138 static inline void virtio_tswap16s(VirtIODevice
*vdev
, uint16_t *s
)
140 *s
= virtio_tswap16(vdev
, *s
);
143 static inline uint32_t virtio_tswap32(VirtIODevice
*vdev
, uint32_t s
)
145 #ifdef HOST_WORDS_BIGENDIAN
146 return virtio_access_is_big_endian(vdev
) ? s
: bswap32(s
);
148 return virtio_access_is_big_endian(vdev
) ? bswap32(s
) : s
;
152 static inline void virtio_tswap32s(VirtIODevice
*vdev
, uint32_t *s
)
154 *s
= virtio_tswap32(vdev
, *s
);
157 static inline uint64_t virtio_tswap64(VirtIODevice
*vdev
, uint64_t s
)
159 #ifdef HOST_WORDS_BIGENDIAN
160 return virtio_access_is_big_endian(vdev
) ? s
: bswap64(s
);
162 return virtio_access_is_big_endian(vdev
) ? bswap64(s
) : s
;
166 static inline void virtio_tswap64s(VirtIODevice
*vdev
, uint64_t *s
)
168 *s
= virtio_tswap64(vdev
, *s
);
170 #endif /* _QEMU_VIRTIO_ACCESS_H */