diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2022-01-15 21:37:23 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2022-01-20 09:09:37 +0100 |
| commit | 75f01c68b5c630a9a6b21b93febf3a871a9111ba (patch) | |
| tree | 37f7a429e17bd1ce867e1a375613657f85cb6cde /softmmu/physmem.c | |
| parent | 5e0214cdeee17de949f2565f4429c15173179ae3 (diff) | |
exec/memory: Extract address_space_set() from dma_memory_set()
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>
Diffstat (limited to 'softmmu/physmem.c')
| -rw-r--r-- | softmmu/physmem.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/softmmu/physmem.c b/softmmu/physmem.c index 3524c04c2a..dddf70edf5 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -2927,6 +2927,25 @@ MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs, } } +MemTxResult address_space_set(AddressSpace *as, hwaddr addr, + uint8_t c, hwaddr len, MemTxAttrs attrs) +{ +#define FILLBUF_SIZE 512 + uint8_t fillbuf[FILLBUF_SIZE]; + int l; + MemTxResult error = MEMTX_OK; + + memset(fillbuf, c, FILLBUF_SIZE); + while (len > 0) { + l = len < FILLBUF_SIZE ? len : FILLBUF_SIZE; + error |= address_space_write(as, addr, attrs, fillbuf, l); + len -= l; + addr += l; + } + + return error; +} + void cpu_physical_memory_rw(hwaddr addr, void *buf, hwaddr len, bool is_write) { |