From 1f4e496e1fc2eb6c8bf377a0f9695930c380bfd3 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Tue, 22 Nov 2016 12:04:52 +0100 Subject: exec: introduce MemoryRegionCache Device models often have to perform multiple access to a single memory region that is known in advance, but would to use "DMA-style" functions instead of address_space_map/unmap. This can happen for example when the data has to undergo endianness conversion. Introduce a new data structure to cache the result of address_space_translate without forcing usage of a host address like address_space_map does. Signed-off-by: Paolo Bonzini --- include/exec/cpu-all.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/exec/cpu-all.h') diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index e9004e5798..ffe43d5654 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -186,6 +186,29 @@ void address_space_stl(AddressSpace *as, hwaddr addr, uint32_t val, MemTxAttrs attrs, MemTxResult *result); void address_space_stq(AddressSpace *as, hwaddr addr, uint64_t val, MemTxAttrs attrs, MemTxResult *result); + +uint32_t lduw_phys_cached(MemoryRegionCache *cache, hwaddr addr); +uint32_t ldl_phys_cached(MemoryRegionCache *cache, hwaddr addr); +uint64_t ldq_phys_cached(MemoryRegionCache *cache, hwaddr addr); +void stl_phys_notdirty_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val); +void stw_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val); +void stl_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val); +void stq_phys_cached(MemoryRegionCache *cache, hwaddr addr, uint64_t val); + +uint32_t address_space_lduw_cached(MemoryRegionCache *cache, hwaddr addr, + MemTxAttrs attrs, MemTxResult *result); +uint32_t address_space_ldl_cached(MemoryRegionCache *cache, hwaddr addr, + MemTxAttrs attrs, MemTxResult *result); +uint64_t address_space_ldq_cached(MemoryRegionCache *cache, hwaddr addr, + MemTxAttrs attrs, MemTxResult *result); +void address_space_stl_notdirty_cached(MemoryRegionCache *cache, hwaddr addr, + uint32_t val, MemTxAttrs attrs, MemTxResult *result); +void address_space_stw_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val, + MemTxAttrs attrs, MemTxResult *result); +void address_space_stl_cached(MemoryRegionCache *cache, hwaddr addr, uint32_t val, + MemTxAttrs attrs, MemTxResult *result); +void address_space_stq_cached(MemoryRegionCache *cache, hwaddr addr, uint64_t val, + MemTxAttrs attrs, MemTxResult *result); #endif /* page related stuff */ -- cgit v1.2.3-55-g7522