[Qemu-devel] [PATCH 02/12 v12] Add API to check whether a physical address is I/O address
This API will be used in the following patch. Signed-off-by: Wen Congyang --- cpu-common.h |2 ++ exec.c |9 + 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/cpu-common.h b/cpu-common.h index dca5175..fcd50dc 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -71,6 +71,8 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)); void cpu_unregister_map_client(void *cookie); +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr); + /* Coalesced MMIO regions are areas where write operations can be reordered. * This usually implies that write operations are side-effect free. This allows * batching which can make a major impact on performance when using diff --git a/exec.c b/exec.c index 77d6866..fe00b76 100644 --- a/exec.c +++ b/exec.c @@ -4662,3 +4662,12 @@ bool virtio_is_big_endian(void) #undef env #endif + +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr) +{ +MemoryRegionSection *section; + +section = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + +return !is_ram_rom_romd(section); +} -- 1.7.1
[Qemu-devel] [PATCH 02/12 v12] Add API to check whether a physical address is I/O address
This API will be used in the following patch. Signed-off-by: Wen Congyang --- cpu-common.h |2 ++ exec.c |9 + 2 files changed, 11 insertions(+), 0 deletions(-) diff --git a/cpu-common.h b/cpu-common.h index dca5175..fcd50dc 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -71,6 +71,8 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)); void cpu_unregister_map_client(void *cookie); +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr); + /* Coalesced MMIO regions are areas where write operations can be reordered. * This usually implies that write operations are side-effect free. This allows * batching which can make a major impact on performance when using diff --git a/exec.c b/exec.c index 6731ab8..b3fd8cb 100644 --- a/exec.c +++ b/exec.c @@ -4657,3 +4657,12 @@ bool virtio_is_big_endian(void) #undef env #endif + +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr) +{ +MemoryRegionSection *section; + +section = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + +return !is_ram_rom_romd(section); +} -- 1.7.1