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fw_cfg: change cur_offset to 32 bits 

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
master
Juan Quintela 2009-11-13 11:59:20 +01:00 committed by Anthony Liguori
parent 1945120112
commit ff06108b18
2 changed files with 40 additions and 6 deletions
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44
hw/fw_cfg.c
View File

@ -39,7 +39,7 @@
#define FW_CFG_SIZE 2
typedef struct _FWCfgEntry {
uint16_t len;
uint32_t len;
uint8_t *data;
void *callback_opaque;
FWCfgCallback callback;
@ -48,7 +48,7 @@ typedef struct _FWCfgEntry {
typedef struct _FWCfgState {
FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
uint16_t cur_entry;
uint16_t cur_offset;
uint32_t cur_offset;
} FWCfgState;
static void fw_cfg_write(FWCfgState *s, uint8_t value)
@ -164,19 +164,53 @@ static void fw_cfg_reset(void *opaque)
fw_cfg_select(s, 0);
}
/* Save restore 32 bit int as uint16_t
This is a Big hack, but it is how the old state did it.
Or we broke compatibility in the state, or we can't use struct tm
*/
static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size)
{
uint32_t *v = pv;
*v = qemu_get_be16(f);
return 0;
}
static void put_unused(QEMUFile *f, void *pv, size_t size)
{
fprintf(stderr, "uint32_as_uint16 is only used for backward compatibilty.\n");
fprintf(stderr, "This functions shouldn't be called.\n");
}
const VMStateInfo vmstate_hack_uint32_as_uint16 = {
.name = "int32_as_uint16",
.get = get_uint32_as_uint16,
.put = put_unused,
};
#define VMSTATE_UINT16_HACK(_f, _s, _t) \
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)
static bool is_version_1(void *opaque, int version_id)
{
return version_id == 1;
}
static const VMStateDescription vmstate_fw_cfg = {
.name = "fw_cfg",
.version_id = 1,
.version_id = 2,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT16(cur_entry, FWCfgState),
VMSTATE_UINT16(cur_offset, FWCfgState),
VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1),
VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
VMSTATE_END_OF_LIST()
}
};
int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len)
int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint32_t len)
{
FWCfgState *s = opaque;
int arch = !!(key & FW_CFG_ARCH_LOCAL);

2
hw/fw_cfg.h
View File

@ -28,7 +28,7 @@
#ifndef NO_QEMU_PROTOS
typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len);
int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint32_t len);
int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value);
int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value);
int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value);