This is a follow up on last year patch from Stephen Checkoway: "block/pflash_cfi02: Implement intereleaved flash devices" https://www.mail-archive.com/qemu-devel@nongnu.org/msg613077.html
Instead of making the PFLASH device more complex, I went implementing a generic interleaver device (that can be re-used for other MMIO devices, probably pointless, still useful for simple testing). The series is available on [1] and is organized as: 1/ Fix a pair of issues in memory.c as we are not exercing much the memory_region_[read/write]_with_attrs_accessor functions (see also [2]). 2/ Allow to use qtest helpers with the 'none' machine (without any CPU). 3/ Add the interleaver device 4/ Add a device to test the interleaver device (later I'll expand it to other MMIO accesses, such access_with_adjusted_size, endianess and unaligned accesses). Let the 'none' machine create this device from command line. 5/ Add qtests using 4/ to test 3/. 6/ Add a way to display the interleaved memory (sub)regions in the HMP 'info mtree' command. Based-on: <20200816173051.16274-1-f4...@amsat.org> [1] https://gitlab.com/philmd/qemu/-/tree/interleaved_device-v1 [2] https://www.mail-archive.com/qemu-devel@nongnu.org/msg730279.html Philippe Mathieu-Daudé (9): memory: Initialize MemoryRegionOps for RAM memory regions qtest: Add local qtest_mem_as() getter qtest: Directly use global address_space_memory when no CPU available hw/misc: Add interleaver device to make interleaved memory accesses hw/misc: Add MMIO test device hw/core/null-machine: Allow to use the MMIO 'test' device tests/qtest: Add generic MMIO tests memory: Allow memory region to display its subregions own descriptions hw/misc/interleaver: Display subregions in 'info mtree' include/exec/memory.h | 6 + include/hw/misc/interleaver.h | 40 +++++ include/hw/misc/testdev.h | 15 ++ hw/core/null-machine.c | 2 + hw/misc/interleaver.c | 283 ++++++++++++++++++++++++++++++++++ hw/misc/mmio-testdev.c | 150 ++++++++++++++++++ softmmu/memory.c | 32 ++++ softmmu/qtest.c | 40 +++-- tests/qtest/mmio-test.c | 146 ++++++++++++++++++ MAINTAINERS | 9 ++ hw/misc/Kconfig | 9 ++ hw/misc/Makefile.objs | 2 + hw/misc/trace-events | 6 + tests/qtest/Makefile.include | 1 + 14 files changed, 728 insertions(+), 13 deletions(-) create mode 100644 include/hw/misc/interleaver.h create mode 100644 include/hw/misc/testdev.h create mode 100644 hw/misc/interleaver.c create mode 100644 hw/misc/mmio-testdev.c create mode 100644 tests/qtest/mmio-test.c -- 2.26.2
