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memory: add backward compatibility for old mmio registration

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This eases the transition to the new API.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Avi Kivity 2011-07-26 14:26:10 +03:00 • committed by Anthony Liguori
parent 627a0e90dc
commit 74901c3bd0
2 changed files with 20 additions and 0 deletions
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10
memory.c
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@ -14,6 +14,7 @@
#include "memory.h"
#include "exec-memory.h"
#include "ioport.h"
#include "bitops.h"
#include <assert.h>
typedef struct AddrRange AddrRange;
@ -506,6 +507,10 @@ static uint32_t memory_region_read_thunk_n(void *_mr,
return -1U; /* FIXME: better signalling */
}
if (!mr->ops->read) {
return mr->ops->old_mmio.read[bitops_ffsl(size)](mr->opaque, addr);
}
/* FIXME: support unaligned access */
access_size_min = mr->ops->impl.min_access_size;
@ -542,6 +547,11 @@ static void memory_region_write_thunk_n(void *_mr,
return; /* FIXME: better signalling */
}
if (!mr->ops->write) {
mr->ops->old_mmio.write[bitops_ffsl(size)](mr->opaque, addr, data);
return;
}
/* FIXME: support unaligned access */
access_size_min = mr->ops->impl.min_access_size;