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exec/memory: Extract address_space_set() from dma_memory_set()

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dma_memory_set() does a DMA barrier, set the address space with
a constant value. The constant value filling code is not specific
to DMA and can be used for AddressSpace. Extract it as a new
helper: address_space_set().

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[lv: rebase]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <20220115203725.3834712-2-laurent@vivier.eu>
This commit is contained in:
Philippe Mathieu-Daudé 2022-01-15 21:37:23 +01:00 • committed by Laurent Vivier
parent 5e0214cdee
commit 75f01c68b5
3 changed files with 36 additions and 14 deletions
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16
include/exec/memory.h
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@ -2908,6 +2908,22 @@ address_space_write_cached(MemoryRegionCache *cache, hwaddr addr,
}
}
/**
* address_space_set: Fill address space with a constant byte.
*
* Return a MemTxResult indicating whether the operation succeeded
* or failed (eg unassigned memory, device rejected the transaction,
* IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
* @c: constant byte to fill the memory
* @len: the number of bytes to fill with the constant byte
* @attrs: memory transaction attributes
*/
MemTxResult address_space_set(AddressSpace *as, hwaddr addr,
uint8_t c, hwaddr len, MemTxAttrs attrs);
#ifdef NEED_CPU_H
/* enum device_endian to MemOp. */
static inline MemOp devend_memop(enum device_endian end)