diff options
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 06ffa1d185..703d9e5f8f 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -28,6 +28,7 @@ #ifndef CONFIG_USER_ONLY #include "exec/hwaddr.h" #endif +#include "exec/memattrs.h" #include "qemu/queue.h" #include "qemu/int128.h" #include "qemu/notify.h" @@ -68,6 +69,16 @@ struct IOMMUTLBEntry { IOMMUAccessFlags perm; }; +/* New-style MMIO accessors can indicate that the transaction failed. + * A zero (MEMTX_OK) response means success; anything else is a failure + * of some kind. The memory subsystem will bitwise-OR together results + * if it is synthesizing an operation from multiple smaller accesses. + */ +#define MEMTX_OK 0 +#define MEMTX_ERROR (1U << 0) /* device returned an error */ +#define MEMTX_DECODE_ERROR (1U << 1) /* nothing at that address */ +typedef uint32_t MemTxResult; + /* * Memory region callbacks */ @@ -84,6 +95,17 @@ struct MemoryRegionOps { uint64_t data, unsigned size); + MemTxResult (*read_with_attrs)(void *opaque, + hwaddr addr, + uint64_t *data, + unsigned size, + MemTxAttrs attrs); + MemTxResult (*write_with_attrs)(void *opaque, + hwaddr addr, + uint64_t data, + unsigned size, + MemTxAttrs attrs); + enum device_endian endianness; /* Guest-visible constraints: */ struct { |