Message ID | 20180313200245.2350-1-wsa+renesas@sang-engineering.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Hi, This series failed docker-mingw@fedora build test. Please find the testing commands and their output below. If you have Docker installed, you can probably reproduce it locally. Type: series Message-id: 20180313200245.2350-1-wsa+renesas@sang-engineering.com Subject: [Qemu-devel] [RFC PATCH] i2c: device passthrough HACK(!) & evaluation === TEST SCRIPT BEGIN === #!/bin/bash set -e git submodule update --init dtc # Let docker tests dump environment info export SHOW_ENV=1 export J=8 time make docker-test-mingw@fedora === TEST SCRIPT END === Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384 Switched to a new branch 'test' 7a638ffbc1 i2c: device passthrough HACK(!) & evaluation === OUTPUT BEGIN === Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc' Cloning into '/var/tmp/patchew-tester-tmp-nkgm8s_c/src/dtc'... Submodule path 'dtc': checked out 'e54388015af1fb4bf04d0bca99caba1074d9cc42' BUILD fedora make[1]: Entering directory '/var/tmp/patchew-tester-tmp-nkgm8s_c/src' GEN /var/tmp/patchew-tester-tmp-nkgm8s_c/src/docker-src.2018-03-13-16.06.36.10128/qemu.tar Cloning into '/var/tmp/patchew-tester-tmp-nkgm8s_c/src/docker-src.2018-03-13-16.06.36.10128/qemu.tar.vroot'... done. Your branch is up-to-date with 'origin/test'. Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc' Cloning into '/var/tmp/patchew-tester-tmp-nkgm8s_c/src/docker-src.2018-03-13-16.06.36.10128/qemu.tar.vroot/dtc'... Submodule path 'dtc': checked out 'e54388015af1fb4bf04d0bca99caba1074d9cc42' Submodule 'ui/keycodemapdb' (git://git.qemu.org/keycodemapdb.git) registered for path 'ui/keycodemapdb' Cloning into '/var/tmp/patchew-tester-tmp-nkgm8s_c/src/docker-src.2018-03-13-16.06.36.10128/qemu.tar.vroot/ui/keycodemapdb'... Submodule path 'ui/keycodemapdb': checked out '6b3d716e2b6472eb7189d3220552280ef3d832ce' COPY RUNNER RUN test-mingw in qemu:fedora Packages installed: PyYAML-3.12-5.fc27.x86_64 SDL-devel-1.2.15-29.fc27.x86_64 bc-1.07.1-3.fc27.x86_64 bison-3.0.4-8.fc27.x86_64 bzip2-1.0.6-24.fc27.x86_64 ccache-3.3.6-1.fc27.x86_64 clang-5.0.1-3.fc27.x86_64 findutils-4.6.0-16.fc27.x86_64 flex-2.6.1-5.fc27.x86_64 gcc-7.3.1-5.fc27.x86_64 gcc-c++-7.3.1-5.fc27.x86_64 gettext-0.19.8.1-12.fc27.x86_64 git-2.14.3-3.fc27.x86_64 glib2-devel-2.54.3-2.fc27.x86_64 hostname-3.18-4.fc27.x86_64 libaio-devel-0.3.110-9.fc27.x86_64 libasan-7.3.1-5.fc27.x86_64 libfdt-devel-1.4.6-1.fc27.x86_64 libubsan-7.3.1-5.fc27.x86_64 llvm-5.0.1-3.fc27.x86_64 make-4.2.1-4.fc27.x86_64 mingw32-SDL-1.2.15-9.fc27.noarch mingw32-bzip2-1.0.6-9.fc27.noarch mingw32-curl-7.54.1-2.fc27.noarch mingw32-glib2-2.54.1-1.fc27.noarch mingw32-gmp-6.1.2-2.fc27.noarch mingw32-gnutls-3.5.13-2.fc27.noarch mingw32-gtk2-2.24.31-4.fc27.noarch mingw32-gtk3-3.22.16-1.fc27.noarch mingw32-libjpeg-turbo-1.5.1-3.fc27.noarch mingw32-libpng-1.6.29-2.fc27.noarch mingw32-libssh2-1.8.0-3.fc27.noarch mingw32-libtasn1-4.13-1.fc27.noarch mingw32-nettle-3.3-3.fc27.noarch mingw32-pixman-0.34.0-3.fc27.noarch mingw32-pkg-config-0.28-9.fc27.x86_64 mingw64-SDL-1.2.15-9.fc27.noarch mingw64-bzip2-1.0.6-9.fc27.noarch mingw64-curl-7.54.1-2.fc27.noarch mingw64-glib2-2.54.1-1.fc27.noarch mingw64-gmp-6.1.2-2.fc27.noarch mingw64-gnutls-3.5.13-2.fc27.noarch mingw64-gtk2-2.24.31-4.fc27.noarch mingw64-gtk3-3.22.16-1.fc27.noarch mingw64-libjpeg-turbo-1.5.1-3.fc27.noarch mingw64-libpng-1.6.29-2.fc27.noarch mingw64-libssh2-1.8.0-3.fc27.noarch mingw64-libtasn1-4.13-1.fc27.noarch mingw64-nettle-3.3-3.fc27.noarch mingw64-pixman-0.34.0-3.fc27.noarch mingw64-pkg-config-0.28-9.fc27.x86_64 nettle-devel-3.4-1.fc27.x86_64 perl-5.26.1-403.fc27.x86_64 pixman-devel-0.34.0-4.fc27.x86_64 python3-3.6.2-13.fc27.x86_64 sparse-0.5.1-2.fc27.x86_64 tar-1.29-7.fc27.x86_64 which-2.21-4.fc27.x86_64 zlib-devel-1.2.11-4.fc27.x86_64 Environment variables: TARGET_LIST= PACKAGES=ccache gettext git tar PyYAML sparse flex bison python3 bzip2 hostname glib2-devel pixman-devel zlib-devel SDL-devel libfdt-devel gcc gcc-c++ llvm clang make perl which bc findutils libaio-devel nettle-devel libasan libubsan mingw32-pixman mingw32-glib2 mingw32-gmp mingw32-SDL mingw32-pkg-config mingw32-gtk2 mingw32-gtk3 mingw32-gnutls mingw32-nettle mingw32-libtasn1 mingw32-libjpeg-turbo mingw32-libpng mingw32-curl mingw32-libssh2 mingw32-bzip2 mingw64-pixman mingw64-glib2 mingw64-gmp mingw64-SDL mingw64-pkg-config mingw64-gtk2 mingw64-gtk3 mingw64-gnutls mingw64-nettle mingw64-libtasn1 mingw64-libjpeg-turbo mingw64-libpng mingw64-curl mingw64-libssh2 mingw64-bzip2 J=8 V= HOSTNAME=8acbc79569cc DEBUG= SHOW_ENV=1 PWD=/ HOME=/root CCACHE_DIR=/var/tmp/ccache DISTTAG=f27container QEMU_CONFIGURE_OPTS=--python=/usr/bin/python3 FGC=f27 TEST_DIR=/tmp/qemu-test SHLVL=1 FEATURES=mingw clang pyyaml asan dtc PATH=/usr/lib/ccache:/usr/lib64/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin MAKEFLAGS= -j8 EXTRA_CONFIGURE_OPTS= _=/usr/bin/env Configure options: --enable-werror --target-list=x86_64-softmmu,aarch64-softmmu --prefix=/tmp/qemu-test/install --python=/usr/bin/python3 --cross-prefix=x86_64-w64-mingw32- --enable-trace-backends=simple --enable-gnutls --enable-nettle --enable-curl --enable-vnc --enable-bzip2 --enable-guest-agent --with-sdlabi=1.2 --with-gtkabi=2.0 Install prefix /tmp/qemu-test/install BIOS directory /tmp/qemu-test/install firmware path /tmp/qemu-test/install/share/qemu-firmware binary directory /tmp/qemu-test/install library directory /tmp/qemu-test/install/lib module directory /tmp/qemu-test/install/lib libexec directory /tmp/qemu-test/install/libexec include directory /tmp/qemu-test/install/include config directory /tmp/qemu-test/install local state directory queried at runtime Windows SDK no Source path /tmp/qemu-test/src GIT binary git GIT submodules C compiler x86_64-w64-mingw32-gcc Host C compiler cc C++ compiler x86_64-w64-mingw32-g++ Objective-C compiler clang ARFLAGS rv CFLAGS -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -g QEMU_CFLAGS -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/pixman-1 -I$(SRC_PATH)/dtc/libfdt -Werror -DHAS_LIBSSH2_SFTP_FSYNC -mms-bitfields -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/glib-2.0 -I/usr/x86_64-w64-mingw32/sys-root/mingw/lib/glib-2.0/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -m64 -mcx16 -mthreads -D__USE_MINGW_ANSI_STDIO=1 -DWIN32_LEAN_AND_MEAN -DWINVER=0x501 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wexpansion-to-defined -Wendif-labels -Wno-shift-negative-value -Wno-missing-include-dirs -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition -Wtype-limits -fstack-protector-strong -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/p11-kit-1 -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/libpng16 LDFLAGS -Wl,--nxcompat -Wl,--no-seh -Wl,--dynamicbase -Wl,--warn-common -m64 -g make make install install python /usr/bin/python3 -B smbd /usr/sbin/smbd module support no host CPU x86_64 host big endian no target list x86_64-softmmu aarch64-softmmu gprof enabled no sparse enabled no strip binaries yes profiler no static build no SDL support yes (1.2.15) GTK support yes (2.24.31) GTK GL support no VTE support no TLS priority NORMAL GNUTLS support yes GNUTLS rnd yes libgcrypt no libgcrypt kdf no nettle yes (3.3) nettle kdf yes libtasn1 yes curses support no virgl support no curl support yes mingw32 support yes Audio drivers dsound Block whitelist (rw) Block whitelist (ro) VirtFS support no Multipath support no VNC support yes VNC SASL support no VNC JPEG support yes VNC PNG support yes xen support no brlapi support no bluez support no Documentation no PIE no vde support no netmap support no Linux AIO support no ATTR/XATTR support no Install blobs yes KVM support no HAX support yes HVF support no WHPX support no TCG support yes TCG debug enabled no TCG interpreter no malloc trim support no RDMA support no fdt support yes preadv support no fdatasync no madvise no posix_madvise no posix_memalign no libcap-ng support no vhost-net support no vhost-crypto support no vhost-scsi support no vhost-vsock support no vhost-user support no Trace backends simple Trace output file trace-<pid> spice support no rbd support no xfsctl support no smartcard support no libusb no usb net redir no OpenGL support no OpenGL dmabufs no libiscsi support no libnfs support no build guest agent yes QGA VSS support no QGA w32 disk info yes QGA MSI support no seccomp support no coroutine backend win32 coroutine pool yes debug stack usage no crypto afalg no GlusterFS support no gcov gcov gcov enabled no TPM support yes libssh2 support yes TPM passthrough no TPM emulator no QOM debugging yes Live block migration yes lzo support no snappy support no bzip2 support yes NUMA host support no libxml2 no tcmalloc support no jemalloc support no avx2 optimization yes replication support yes VxHS block device no capstone no WARNING: Use of GTK 2.0 is deprecated and will be removed in WARNING: future releases. Please switch to using GTK 3.0 WARNING: Use of SDL 1.2 is deprecated and will be removed in WARNING: future releases. Please switch to using SDL 2.0 mkdir -p dtc/libfdt mkdir -p dtc/tests GEN x86_64-softmmu/config-devices.mak.tmp GEN aarch64-softmmu/config-devices.mak.tmp GEN config-host.h GEN qapi-gen GEN qemu-options.def GEN trace/generated-helpers-wrappers.h GEN trace/generated-tcg-tracers.h GEN trace/generated-helpers.h GEN trace/generated-helpers.c GEN x86_64-softmmu/config-devices.mak GEN aarch64-softmmu/config-devices.mak GEN module_block.h GEN ui/input-keymap-atset1-to-qcode.c GEN ui/input-keymap-qcode-to-atset1.c GEN ui/input-keymap-linux-to-qcode.c GEN ui/input-keymap-qcode-to-atset2.c GEN ui/input-keymap-qcode-to-atset3.c GEN ui/input-keymap-qcode-to-linux.c GEN ui/input-keymap-qcode-to-qnum.c GEN ui/input-keymap-qcode-to-sun.c GEN ui/input-keymap-qnum-to-qcode.c GEN ui/input-keymap-usb-to-qcode.c GEN ui/input-keymap-win32-to-qcode.c GEN ui/input-keymap-x11-to-qcode.c GEN ui/input-keymap-xorgevdev-to-qcode.c GEN ui/input-keymap-xorgkbd-to-qcode.c GEN ui/input-keymap-xorgxquartz-to-qcode.c GEN ui/input-keymap-xorgxwin-to-qcode.c GEN tests/test-qapi-gen GEN trace-root.h GEN util/trace.h GEN crypto/trace.h GEN io/trace.h GEN migration/trace.h GEN block/trace.h GEN chardev/trace.h GEN hw/block/trace.h GEN hw/block/dataplane/trace.h GEN hw/char/trace.h GEN hw/intc/trace.h GEN hw/net/trace.h GEN hw/rdma/trace.h GEN hw/rdma/vmw/trace.h GEN hw/virtio/trace.h GEN hw/audio/trace.h GEN hw/misc/trace.h GEN hw/misc/macio/trace.h GEN hw/usb/trace.h GEN hw/scsi/trace.h GEN hw/nvram/trace.h GEN hw/display/trace.h GEN hw/input/trace.h GEN hw/timer/trace.h GEN hw/dma/trace.h GEN hw/sparc/trace.h GEN hw/sparc64/trace.h GEN hw/sd/trace.h GEN hw/isa/trace.h GEN hw/mem/trace.h GEN hw/i386/trace.h GEN hw/i386/xen/trace.h GEN hw/9pfs/trace.h GEN hw/ppc/trace.h GEN hw/pci/trace.h GEN hw/pci-host/trace.h GEN hw/s390x/trace.h GEN hw/vfio/trace.h GEN hw/acpi/trace.h GEN hw/arm/trace.h GEN hw/alpha/trace.h GEN hw/hppa/trace.h GEN hw/xen/trace.h GEN hw/ide/trace.h GEN hw/tpm/trace.h GEN ui/trace.h GEN audio/trace.h GEN net/trace.h GEN target/arm/trace.h GEN target/i386/trace.h GEN target/mips/trace.h GEN target/sparc/trace.h GEN target/s390x/trace.h GEN target/ppc/trace.h GEN qom/trace.h GEN linux-user/trace.h GEN qapi/trace.h GEN accel/tcg/trace.h GEN accel/kvm/trace.h GEN nbd/trace.h GEN scsi/trace.h GEN trace-root.c GEN util/trace.c GEN crypto/trace.c GEN io/trace.c GEN migration/trace.c GEN block/trace.c GEN chardev/trace.c GEN hw/block/trace.c GEN hw/block/dataplane/trace.c GEN hw/char/trace.c GEN hw/intc/trace.c GEN hw/net/trace.c GEN hw/rdma/trace.c GEN hw/rdma/vmw/trace.c GEN hw/virtio/trace.c GEN hw/audio/trace.c GEN hw/misc/trace.c GEN hw/misc/macio/trace.c GEN hw/usb/trace.c GEN hw/scsi/trace.c GEN hw/nvram/trace.c GEN hw/display/trace.c GEN hw/input/trace.c GEN hw/timer/trace.c GEN hw/dma/trace.c GEN hw/sparc/trace.c GEN hw/sparc64/trace.c GEN hw/sd/trace.c GEN hw/isa/trace.c GEN hw/mem/trace.c GEN hw/i386/trace.c GEN hw/i386/xen/trace.c GEN hw/9pfs/trace.c GEN hw/ppc/trace.c GEN hw/pci/trace.c GEN hw/pci-host/trace.c GEN hw/s390x/trace.c GEN hw/vfio/trace.c GEN hw/acpi/trace.c GEN hw/arm/trace.c GEN hw/alpha/trace.c GEN hw/hppa/trace.c GEN hw/xen/trace.c GEN hw/ide/trace.c GEN hw/tpm/trace.c GEN ui/trace.c GEN audio/trace.c GEN net/trace.c GEN target/arm/trace.c GEN target/i386/trace.c GEN target/mips/trace.c GEN target/sparc/trace.c GEN target/s390x/trace.c GEN target/ppc/trace.c GEN qom/trace.c GEN linux-user/trace.c GEN qapi/trace.c GEN accel/tcg/trace.c GEN accel/kvm/trace.c GEN nbd/trace.c GEN scsi/trace.c GEN config-all-devices.mak DEP /tmp/qemu-test/src/dtc/tests/dumptrees.c DEP /tmp/qemu-test/src/dtc/tests/trees.S DEP /tmp/qemu-test/src/dtc/tests/testutils.c DEP /tmp/qemu-test/src/dtc/tests/value-labels.c DEP /tmp/qemu-test/src/dtc/tests/asm_tree_dump.c DEP /tmp/qemu-test/src/dtc/tests/check_path.c DEP /tmp/qemu-test/src/dtc/tests/truncated_property.c DEP /tmp/qemu-test/src/dtc/tests/overlay_bad_fixup.c DEP /tmp/qemu-test/src/dtc/tests/overlay.c DEP /tmp/qemu-test/src/dtc/tests/subnode_iterate.c DEP /tmp/qemu-test/src/dtc/tests/property_iterate.c DEP /tmp/qemu-test/src/dtc/tests/integer-expressions.c DEP /tmp/qemu-test/src/dtc/tests/utilfdt_test.c DEP /tmp/qemu-test/src/dtc/tests/path_offset_aliases.c DEP /tmp/qemu-test/src/dtc/tests/add_subnode_with_nops.c DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_unordered.c DEP /tmp/qemu-test/src/dtc/tests/dtb_reverse.c DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_ordered.c DEP /tmp/qemu-test/src/dtc/tests/extra-terminating-null.c DEP /tmp/qemu-test/src/dtc/tests/incbin.c DEP /tmp/qemu-test/src/dtc/tests/boot-cpuid.c DEP /tmp/qemu-test/src/dtc/tests/phandle_format.c DEP /tmp/qemu-test/src/dtc/tests/path-references.c DEP /tmp/qemu-test/src/dtc/tests/references.c DEP /tmp/qemu-test/src/dtc/tests/string_escapes.c DEP /tmp/qemu-test/src/dtc/tests/propname_escapes.c DEP /tmp/qemu-test/src/dtc/tests/appendprop1.c DEP /tmp/qemu-test/src/dtc/tests/appendprop2.c DEP /tmp/qemu-test/src/dtc/tests/del_node.c DEP /tmp/qemu-test/src/dtc/tests/del_property.c DEP /tmp/qemu-test/src/dtc/tests/setprop.c DEP /tmp/qemu-test/src/dtc/tests/set_name.c DEP /tmp/qemu-test/src/dtc/tests/rw_tree1.c DEP /tmp/qemu-test/src/dtc/tests/open_pack.c DEP /tmp/qemu-test/src/dtc/tests/nopulate.c DEP /tmp/qemu-test/src/dtc/tests/mangle-layout.c DEP /tmp/qemu-test/src/dtc/tests/move_and_save.c DEP /tmp/qemu-test/src/dtc/tests/sw_tree1.c DEP /tmp/qemu-test/src/dtc/tests/nop_node.c DEP /tmp/qemu-test/src/dtc/tests/nop_property.c DEP /tmp/qemu-test/src/dtc/tests/setprop_inplace.c DEP /tmp/qemu-test/src/dtc/tests/stringlist.c DEP /tmp/qemu-test/src/dtc/tests/addr_size_cells.c DEP /tmp/qemu-test/src/dtc/tests/notfound.c DEP /tmp/qemu-test/src/dtc/tests/sized_cells.c DEP /tmp/qemu-test/src/dtc/tests/char_literal.c DEP /tmp/qemu-test/src/dtc/tests/get_alias.c DEP /tmp/qemu-test/src/dtc/tests/node_check_compatible.c DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_compatible.c DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_phandle.c DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_prop_value.c DEP /tmp/qemu-test/src/dtc/tests/parent_offset.c DEP /tmp/qemu-test/src/dtc/tests/supernode_atdepth_offset.c DEP /tmp/qemu-test/src/dtc/tests/get_path.c DEP /tmp/qemu-test/src/dtc/tests/get_phandle.c DEP /tmp/qemu-test/src/dtc/tests/getprop.c DEP /tmp/qemu-test/src/dtc/tests/get_name.c DEP /tmp/qemu-test/src/dtc/tests/subnode_offset.c DEP /tmp/qemu-test/src/dtc/tests/find_property.c DEP /tmp/qemu-test/src/dtc/tests/path_offset.c DEP /tmp/qemu-test/src/dtc/tests/root_node.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_overlay.c DEP /tmp/qemu-test/src/dtc/tests/get_mem_rsv.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_addresses.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_empty_tree.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_strerror.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_rw.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_ro.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_sw.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt_wip.c DEP /tmp/qemu-test/src/dtc/libfdt/fdt.c DEP /tmp/qemu-test/src/dtc/util.c DEP /tmp/qemu-test/src/dtc/fdtoverlay.c DEP /tmp/qemu-test/src/dtc/fdtput.c DEP /tmp/qemu-test/src/dtc/fdtget.c DEP /tmp/qemu-test/src/dtc/fdtdump.c LEX convert-dtsv0-lexer.lex.c DEP /tmp/qemu-test/src/dtc/srcpos.c BISON dtc-parser.tab.c LEX dtc-lexer.lex.c DEP /tmp/qemu-test/src/dtc/treesource.c DEP /tmp/qemu-test/src/dtc/livetree.c DEP /tmp/qemu-test/src/dtc/fstree.c DEP /tmp/qemu-test/src/dtc/flattree.c DEP /tmp/qemu-test/src/dtc/dtc.c DEP /tmp/qemu-test/src/dtc/data.c DEP /tmp/qemu-test/src/dtc/checks.c DEP convert-dtsv0-lexer.lex.c DEP dtc-parser.tab.c DEP dtc-lexer.lex.c CHK version_gen.h UPD version_gen.h DEP /tmp/qemu-test/src/dtc/util.c CC libfdt/fdt.o CC libfdt/fdt_ro.o CC libfdt/fdt_sw.o CC libfdt/fdt_wip.o CC libfdt/fdt_rw.o CC libfdt/fdt_strerror.o CC libfdt/fdt_empty_tree.o CC libfdt/fdt_addresses.o CC libfdt/fdt_overlay.o AR libfdt/libfdt.a x86_64-w64-mingw32-ar: creating libfdt/libfdt.a a - libfdt/fdt.o a - libfdt/fdt_ro.o a - libfdt/fdt_wip.o a - libfdt/fdt_sw.o a - libfdt/fdt_rw.o a - libfdt/fdt_strerror.o a - libfdt/fdt_empty_tree.o a - libfdt/fdt_addresses.o a - libfdt/fdt_overlay.o RC version.o mkdir -p dtc/libfdt mkdir -p dtc/tests GEN qga/qapi-generated/qapi-gen CC qapi/qapi-types.o CC qapi/qapi-types-block-core.o CC qapi/qapi-types-block.o CC qapi/qapi-builtin-types.o CC qapi/qapi-types-char.o CC qapi/qapi-types-common.o CC qapi/qapi-types-crypto.o CC qapi/qapi-types-introspect.o CC qapi/qapi-types-migration.o CC qapi/qapi-types-misc.o CC qapi/qapi-types-net.o CC qapi/qapi-types-rocker.o CC qapi/qapi-types-run-state.o CC qapi/qapi-types-sockets.o CC qapi/qapi-types-tpm.o CC qapi/qapi-types-trace.o CC qapi/qapi-types-transaction.o CC qapi/qapi-types-ui.o CC qapi/qapi-builtin-visit.o CC qapi/qapi-visit.o CC qapi/qapi-visit-block-core.o CC qapi/qapi-visit-block.o CC qapi/qapi-visit-char.o CC qapi/qapi-visit-common.o CC qapi/qapi-visit-crypto.o CC qapi/qapi-visit-introspect.o CC qapi/qapi-visit-migration.o CC qapi/qapi-visit-misc.o CC qapi/qapi-visit-net.o CC qapi/qapi-visit-rocker.o CC qapi/qapi-visit-run-state.o CC qapi/qapi-visit-tpm.o CC qapi/qapi-visit-sockets.o CC qapi/qapi-visit-trace.o CC qapi/qapi-visit-transaction.o CC qapi/qapi-visit-ui.o CC qapi/qapi-events.o CC qapi/qapi-events-block-core.o CC qapi/qapi-events-block.o CC qapi/qapi-events-char.o CC qapi/qapi-events-common.o CC qapi/qapi-events-crypto.o CC qapi/qapi-events-introspect.o CC qapi/qapi-events-migration.o CC qapi/qapi-events-misc.o CC qapi/qapi-events-net.o CC qapi/qapi-events-rocker.o CC qapi/qapi-events-run-state.o CC qapi/qapi-events-sockets.o CC qapi/qapi-events-trace.o CC qapi/qapi-events-tpm.o CC qapi/qapi-events-transaction.o CC qapi/qapi-events-ui.o CC qapi/qapi-introspect.o CC qapi/qapi-visit-core.o CC qapi/qapi-dealloc-visitor.o CC qapi/qobject-input-visitor.o CC qapi/qobject-output-visitor.o CC qapi/qmp-registry.o CC qapi/string-input-visitor.o CC qapi/qmp-dispatch.o CC qapi/string-output-visitor.o CC qapi/opts-visitor.o CC qapi/qapi-clone-visitor.o CC qapi/qmp-event.o CC qapi/qapi-util.o CC qobject/qnull.o CC qobject/qnum.o CC qobject/qstring.o CC qobject/qdict.o CC qobject/qlist.o CC qobject/qbool.o CC qobject/qjson.o CC qobject/qlit.o CC qobject/qobject.o CC qobject/json-lexer.o CC qobject/json-streamer.o CC qobject/json-parser.o CC trace/simple.o CC trace/control.o CC trace/qmp.o CC util/osdep.o CC util/cutils.o CC util/unicode.o CC util/qemu-timer-common.o CC util/bufferiszero.o CC util/lockcnt.o CC util/aiocb.o CC util/async.o CC util/aio-wait.o CC util/thread-pool.o CC util/qemu-timer.o CC util/main-loop.o CC util/iohandler.o CC util/aio-win32.o CC util/event_notifier-win32.o CC util/oslib-win32.o CC util/qemu-thread-win32.o CC util/envlist.o CC util/path.o CC util/module.o CC util/host-utils.o CC util/bitmap.o CC util/bitops.o CC util/hbitmap.o CC util/fifo8.o CC util/acl.o CC util/cacheinfo.o CC util/qemu-error.o CC util/error.o CC util/id.o CC util/iov.o CC util/qemu-config.o CC util/qemu-sockets.o CC util/uri.o CC util/notify.o CC util/qemu-option.o CC util/qemu-progress.o CC util/keyval.o CC util/hexdump.o CC util/crc32c.o CC util/uuid.o CC util/throttle.o CC util/getauxval.o CC util/readline.o CC util/rcu.o CC util/qemu-coroutine.o CC util/qemu-coroutine-lock.o CC util/qemu-coroutine-io.o CC util/coroutine-win32.o CC util/qemu-coroutine-sleep.o CC util/buffer.o CC util/timed-average.o CC util/base64.o CC util/log.o CC util/pagesize.o CC util/qdist.o CC util/qht.o CC util/range.o CC util/stats64.o CC util/systemd.o CC trace-root.o CC util/trace.o CC crypto/trace.o CC io/trace.o CC migration/trace.o CC block/trace.o CC chardev/trace.o CC hw/block/trace.o CC hw/block/dataplane/trace.o CC hw/intc/trace.o CC hw/char/trace.o CC hw/net/trace.o CC hw/rdma/trace.o CC hw/rdma/vmw/trace.o CC hw/virtio/trace.o CC hw/audio/trace.o CC hw/misc/trace.o CC hw/misc/macio/trace.o CC hw/usb/trace.o CC hw/scsi/trace.o CC hw/nvram/trace.o CC hw/display/trace.o CC hw/input/trace.o CC hw/timer/trace.o CC hw/dma/trace.o CC hw/sparc/trace.o CC hw/sparc64/trace.o CC hw/sd/trace.o CC hw/isa/trace.o CC hw/mem/trace.o CC hw/i386/trace.o CC hw/i386/xen/trace.o CC hw/9pfs/trace.o CC hw/ppc/trace.o CC hw/pci/trace.o CC hw/pci-host/trace.o CC hw/s390x/trace.o CC hw/vfio/trace.o CC hw/acpi/trace.o CC hw/arm/trace.o CC hw/alpha/trace.o CC hw/hppa/trace.o CC hw/xen/trace.o CC hw/ide/trace.o CC hw/tpm/trace.o CC audio/trace.o CC ui/trace.o CC net/trace.o CC target/arm/trace.o CC target/i386/trace.o CC target/mips/trace.o CC target/sparc/trace.o CC target/s390x/trace.o CC target/ppc/trace.o CC qom/trace.o CC linux-user/trace.o CC qapi/trace.o CC accel/tcg/trace.o CC accel/kvm/trace.o CC nbd/trace.o CC scsi/trace.o CC crypto/pbkdf-stub.o CC stubs/arch-query-cpu-def.o CC stubs/arch-query-cpu-model-expansion.o CC stubs/arch-query-cpu-model-comparison.o CC stubs/arch-query-cpu-model-baseline.o CC stubs/bdrv-next-monitor-owned.o CC stubs/blk-commit-all.o CC stubs/blockdev-close-all-bdrv-states.o CC stubs/clock-warp.o CC stubs/cpu-get-clock.o CC stubs/cpu-get-icount.o CC stubs/dump.o CC stubs/error-printf.o CC stubs/fdset.o CC stubs/gdbstub.o CC stubs/get-vm-name.o CC stubs/iothread.o CC stubs/iothread-lock.o CC stubs/machine-init-done.o CC stubs/is-daemonized.o CC stubs/migr-blocker.o CC stubs/change-state-handler.o CC stubs/monitor.o CC stubs/notify-event.o CC stubs/qtest.o CC stubs/replay.o CC stubs/runstate-check.o CC stubs/set-fd-handler.o CC stubs/slirp.o CC stubs/sysbus.o CC stubs/tpm.o CC stubs/trace-control.o CC stubs/uuid.o CC stubs/vm-stop.o CC stubs/vmstate.o CC stubs/fd-register.o CC stubs/qmp_pc_dimm.o CC stubs/target-monitor-defs.o CC stubs/target-get-monitor-def.o CC stubs/pc_madt_cpu_entry.o CC stubs/vmgenid.o CC stubs/xen-common.o CC stubs/xen-hvm.o CC stubs/pci-host-piix.o CC stubs/ram-block.o GEN qemu-img-cmds.h CC block.o CC blockjob.o CC qemu-io-cmds.o CC replication.o CC block/raw-format.o CC block/qcow.o CC block/vdi.o CC block/vmdk.o CC block/cloop.o CC block/bochs.o CC block/vpc.o CC block/vvfat.o CC block/dmg.o CC block/qcow2.o CC block/qcow2-refcount.o CC block/qcow2-snapshot.o CC block/qcow2-cluster.o CC block/qcow2-cache.o CC block/qcow2-bitmap.o CC block/qed.o CC block/qed-l2-cache.o CC block/qed-table.o CC block/qed-cluster.o CC block/qed-check.o CC block/vhdx.o CC block/vhdx-endian.o CC block/vhdx-log.o CC block/quorum.o CC block/parallels.o CC block/blkdebug.o CC block/blkverify.o CC block/blkreplay.o CC block/block-backend.o CC block/snapshot.o CC block/qapi.o CC block/file-win32.o CC block/win32-aio.o CC block/null.o CC block/mirror.o CC block/commit.o CC block/io.o CC block/create.o CC block/throttle-groups.o CC block/nbd.o CC block/nbd-client.o CC block/sheepdog.o CC block/accounting.o CC block/dirty-bitmap.o CC block/write-threshold.o CC block/backup.o CC block/replication.o CC block/throttle.o CC block/crypto.o CC nbd/server.o CC nbd/client.o CC nbd/common.o CC scsi/utils.o CC block/curl.o CC block/ssh.o CC block/dmg-bz2.o CC crypto/init.o CC crypto/hash.o CC crypto/hash-nettle.o CC crypto/hmac.o CC crypto/hmac-nettle.o CC crypto/aes.o CC crypto/desrfb.o CC crypto/cipher.o CC crypto/tlscreds.o CC crypto/tlscredsanon.o CC crypto/tlscredsx509.o CC crypto/tlssession.o CC crypto/secret.o CC crypto/random-gnutls.o CC crypto/pbkdf.o CC crypto/pbkdf-nettle.o CC crypto/ivgen.o CC crypto/ivgen-essiv.o CC crypto/ivgen-plain.o CC crypto/ivgen-plain64.o CC crypto/afsplit.o CC crypto/xts.o CC crypto/block.o CC crypto/block-qcow.o CC crypto/block-luks.o CC io/channel.o CC io/channel-buffer.o CC io/channel-command.o CC io/channel-file.o CC io/channel-socket.o CC io/channel-tls.o CC io/channel-watch.o CC io/channel-websock.o CC io/channel-util.o CC io/dns-resolver.o CC io/net-listener.o CC io/task.o CC qom/object.o CC qom/container.o CC qom/qom-qobject.o CC qom/object_interfaces.o CC qemu-io.o CC blockdev.o CC blockdev-nbd.o CC bootdevice.o CC iothread.o CC qdev-monitor.o CC device-hotplug.o CC os-win32.o CC bt-host.o CC bt-vhci.o CC dma-helpers.o CC vl.o CC tpm.o CC device_tree.o CC qapi/qapi-commands.o CC qapi/qapi-commands-block-core.o CC qapi/qapi-commands-block.o CC qapi/qapi-commands-char.o CC qapi/qapi-commands-common.o CC qapi/qapi-commands-crypto.o CC qapi/qapi-commands-introspect.o CC qapi/qapi-commands-migration.o CC qapi/qapi-commands-misc.o CC qapi/qapi-commands-net.o CC qapi/qapi-commands-rocker.o CC qapi/qapi-commands-run-state.o CC qapi/qapi-commands-sockets.o CC qapi/qapi-commands-tpm.o CC qapi/qapi-commands-trace.o CC qapi/qapi-commands-transaction.o CC qapi/qapi-commands-ui.o CC qmp.o CC hmp.o CC cpus-common.o CC audio/audio.o CC audio/noaudio.o CC audio/wavaudio.o CC audio/mixeng.o CC audio/dsoundaudio.o CC audio/audio_win_int.o CC audio/wavcapture.o CC backends/rng.o CC backends/rng-egd.o CC backends/tpm.o CC backends/hostmem.o CC backends/hostmem-ram.o CC backends/cryptodev.o CC backends/cryptodev-builtin.o CC backends/cryptodev-vhost.o CC block/stream.o CC chardev/msmouse.o CC chardev/wctablet.o CC chardev/testdev.o CC disas/arm.o CXX disas/arm-a64.o CC disas/i386.o CXX disas/libvixl/vixl/utils.o CXX disas/libvixl/vixl/compiler-intrinsics.o CXX disas/libvixl/vixl/a64/instructions-a64.o CXX disas/libvixl/vixl/a64/decoder-a64.o CXX disas/libvixl/vixl/a64/disasm-a64.o CC hw/acpi/core.o CC hw/acpi/piix4.o CC hw/acpi/pcihp.o CC hw/acpi/ich9.o CC hw/acpi/tco.o CC hw/acpi/cpu_hotplug.o CC hw/acpi/memory_hotplug.o CC hw/acpi/nvdimm.o CC hw/acpi/cpu.o CC hw/acpi/vmgenid.o CC hw/acpi/acpi_interface.o CC hw/acpi/bios-linker-loader.o CC hw/acpi/aml-build.o CC hw/acpi/ipmi.o CC hw/acpi/acpi-stub.o CC hw/acpi/ipmi-stub.o CC hw/audio/sb16.o CC hw/audio/es1370.o CC hw/audio/ac97.o CC hw/audio/fmopl.o CC hw/audio/adlib.o CC hw/audio/gus.o CC hw/audio/gusemu_hal.o CC hw/audio/gusemu_mixer.o CC hw/audio/cs4231a.o CC hw/audio/intel-hda.o CC hw/audio/hda-codec.o CC hw/audio/pcspk.o CC hw/audio/wm8750.o CC hw/audio/pl041.o CC hw/audio/lm4549.o CC hw/audio/marvell_88w8618.o CC hw/audio/soundhw.o CC hw/block/block.o CC hw/block/cdrom.o CC hw/block/hd-geometry.o CC hw/block/fdc.o CC hw/block/m25p80.o CC hw/block/nand.o CC hw/block/pflash_cfi01.o CC hw/block/pflash_cfi02.o CC hw/block/ecc.o CC hw/block/onenand.o CC hw/bt/core.o CC hw/block/nvme.o CC hw/bt/l2cap.o CC hw/bt/sdp.o CC hw/bt/hci.o CC hw/bt/hid.o CC hw/bt/hci-csr.o CC hw/char/ipoctal232.o CC hw/char/parallel.o CC hw/char/pl011.o CC hw/char/serial.o CC hw/char/serial-isa.o CC hw/char/serial-pci.o CC hw/char/virtio-console.o CC hw/char/cadence_uart.o CC hw/char/cmsdk-apb-uart.o CC hw/char/debugcon.o CC hw/char/imx_serial.o CC hw/core/qdev.o CC hw/core/qdev-properties.o CC hw/core/bus.o CC hw/core/reset.o CC hw/core/qdev-fw.o CC hw/core/fw-path-provider.o CC hw/core/irq.o CC hw/core/hotplug.o CC hw/core/nmi.o CC hw/core/stream.o CC hw/core/ptimer.o CC hw/core/sysbus.o CC hw/core/machine.o CC hw/core/loader.o CC hw/core/qdev-properties-system.o CC hw/core/register.o CC hw/core/or-irq.o CC hw/core/split-irq.o CC hw/core/platform-bus.o CC hw/cpu/core.o CC hw/display/ads7846.o CC hw/display/cirrus_vga.o CC hw/display/pl110.o CC hw/display/sii9022.o CC hw/display/ssd0303.o CC hw/display/ssd0323.o CC hw/display/vga-pci.o CC hw/display/vga-isa.o CC hw/display/vmware_vga.o CC hw/display/blizzard.o CC hw/display/exynos4210_fimd.o CC hw/display/framebuffer.o CC hw/display/tc6393xb.o CC hw/dma/pl080.o CC hw/dma/pl330.o CC hw/dma/i8257.o CC hw/dma/xilinx_axidma.o CC hw/dma/xlnx-zynq-devcfg.o CC hw/gpio/max7310.o CC hw/gpio/pl061.o CC hw/gpio/zaurus.o CC hw/gpio/gpio_key.o CC hw/i2c/core.o CC hw/i2c/smbus.o CC hw/i2c/smbus_eeprom.o CC hw/i2c/host-i2cdev.o CC hw/i2c/i2c-ddc.o CC hw/i2c/versatile_i2c.o CC hw/i2c/smbus_ich9.o CC hw/i2c/pm_smbus.o CC hw/i2c/bitbang_i2c.o /tmp/qemu-test/src/hw/i2c/host-i2cdev.c:13:10: fatal error: sys/ioctl.h: No such file or directory #include <sys/ioctl.h> ^~~~~~~~~~~~~ compilation terminated. make: *** [/tmp/qemu-test/src/rules.mak:66: hw/i2c/host-i2cdev.o] Error 1 make: *** Waiting for unfinished jobs.... Traceback (most recent call last): File "./tests/docker/docker.py", line 407, in <module> sys.exit(main()) File "./tests/docker/docker.py", line 404, in main return args.cmdobj.run(args, argv) File "./tests/docker/docker.py", line 261, in run return Docker().run(argv, args.keep, quiet=args.quiet) File "./tests/docker/docker.py", line 229, in run quiet=quiet) File "./tests/docker/docker.py", line 147, in _do_check return subprocess.check_call(self._command + cmd, **kwargs) File "/usr/lib64/python2.7/subprocess.py", line 186, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['docker', 'run', '--label', 'com.qemu.instance.uuid=0e77b03226fa11e89b4252540069c830', '-u', '0', '--security-opt', 'seccomp=unconfined', '--rm', '--net=none', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=8', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/root/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-nkgm8s_c/src/docker-src.2018-03-13-16.06.36.10128:/var/tmp/qemu:z,ro', 'qemu:fedora', '/var/tmp/qemu/run', 'test-mingw']' returned non-zero exit status 2 make[1]: *** [tests/docker/Makefile.include:129: docker-run] Error 1 make[1]: Leaving directory '/var/tmp/patchew-tester-tmp-nkgm8s_c/src' make: *** [tests/docker/Makefile.include:163: docker-run-test-mingw@fedora] Error 2 real 1m58.683s user 0m4.707s sys 0m3.907s === OUTPUT END === Test command exited with code: 2 --- Email generated automatically by Patchew [http://patchew.org/]. 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diff --git a/hw/i2c/Makefile.objs b/hw/i2c/Makefile.objs index 37cacde978..d0cc08dd10 100644 --- a/hw/i2c/Makefile.objs +++ b/hw/i2c/Makefile.objs @@ -1,4 +1,4 @@ -common-obj-$(CONFIG_I2C) += core.o smbus.o smbus_eeprom.o +common-obj-$(CONFIG_I2C) += core.o smbus.o smbus_eeprom.o host-i2cdev.o common-obj-$(CONFIG_DDC) += i2c-ddc.o common-obj-$(CONFIG_VERSATILE_I2C) += versatile_i2c.o common-obj-$(CONFIG_ACPI_X86) += smbus_ich9.o diff --git a/hw/i2c/host-i2cdev.c b/hw/i2c/host-i2cdev.c new file mode 100644 index 0000000000..a7f2d549f1 --- /dev/null +++ b/hw/i2c/host-i2cdev.c @@ -0,0 +1,110 @@ +/* + * I2C device passthrough HACK + * + * Copyright (c) 2018 Wolfram Sang, Sang Engineering, Renesas Electronics + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the LICENSE file in the top-level directory. + * + * Example to use: + * -device host-i2cdev,address=0x64,file=/dev/i2c-0,hostaddr=0x50 + */ + +#include <sys/ioctl.h> +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/hw.h" +#include "hw/i2c/i2c.h" + +/* Ugh, problem! QEMU defines I2C_SLAVE, too */ +#undef I2C_SLAVE +#include <linux/i2c.h> +#include <linux/i2c-dev.h> + +#define ERR(FMT, ...) fprintf(stderr, TYPE_HOST_I2CDEV " : " FMT, \ + ## __VA_ARGS__) + +#define TYPE_HOST_I2CDEV "host-i2cdev" +#define HOST_I2CDEV(obj) OBJECT_CHECK(HostI2CDevState, (obj), TYPE_HOST_I2CDEV) + +typedef struct HostI2CDevState { + I2CSlave parent_obj; + char *file; + int fd; + uint32_t hostaddr; +} HostI2CDevState; + +static int host_i2cdev_recv(I2CSlave *s) +{ + HostI2CDevState *i2cdev = HOST_I2CDEV(s); + union i2c_smbus_data data; + struct i2c_smbus_ioctl_data args = { + .read_write = I2C_SMBUS_READ, + .size = I2C_SMBUS_BYTE, + .data = &data, + }; + int err; + + err = ioctl(i2cdev->fd, I2C_SMBUS, &args); + + return err == 0 ? data.byte : 0; +} + +static int host_i2cdev_send(I2CSlave *s, uint8_t data) +{ + /* We don't support writes */ + return -1; +} + +static int host_i2cdev_init(I2CSlave *i2c) +{ + HostI2CDevState *i2cdev = HOST_I2CDEV(i2c); + + if (!i2cdev->file) { + ERR("file is required!\n"); + exit(1); + } + + i2cdev->fd = qemu_open(i2cdev->file, O_RDWR); + + if (i2cdev->fd < 0) { + ERR("file can't be opened!\n"); + exit(1); + } + + return ioctl(i2cdev->fd, I2C_SLAVE, i2cdev->hostaddr ?: i2c->address); +} + +static Property host_i2cdev_props[] = { + DEFINE_PROP_STRING("file", HostI2CDevState, file), + DEFINE_PROP_UINT32("hostaddr", HostI2CDevState, hostaddr, 0), + DEFINE_PROP_END_OF_LIST() +}; + +static void host_i2cdev_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); + + k->init = &host_i2cdev_init; + k->recv = &host_i2cdev_recv; + k->send = &host_i2cdev_send; + + dc->props = host_i2cdev_props; +} + +static +const TypeInfo host_i2cdev_type = { + .name = TYPE_HOST_I2CDEV, + .parent = TYPE_I2C_SLAVE, + .instance_size = sizeof(HostI2CDevState), + .class_size = sizeof(I2CSlaveClass), + .class_init = host_i2cdev_class_init, +}; + +static void host_i2cdev_register(void) +{ + type_register_static(&host_i2cdev_type); +} + +type_init(host_i2cdev_register)
I was asked to investigate I2C device passthrough possibilities for QEMU on Linux. The idea was to expose only a single device, not the whole bus. There was no specific use case explained, so some decisions are still to be made. E.g. I think the host-device should get its own virtualized bus later, but I can't really tell yet. This is my first contact with QEMU, so the patch is more like getting my feet wet. I wouldn't even call it a proof-of-concept. However, while working on this (which gets at least something done), I already gained experiences which I would like to share here: Full virtualization ------------------- Would be nice to have because it would work with all virtual I2C adapters instantly, however there come problems with it. For that to work, we would need to be able to transmit the QEMU I2C primitives from userspace to the kernel. There is currently no such interface for that. As of today, there is only the i2c-dev interface which allows to send a complete transfer (which may consist of multiple, combined messages) or SMBus commands. There is no way to send more primitive commands like "send {start|stop|acknowledge}-bit". Even if there was, most hardware I know of wouldn't work well with this. We often need a-priori knowledge like length of the message to program the controller. Such information is not available when working with such primitives. On top of that, that approach would cause quite some overhead, so performance regressions for drivers which use other devices on the same bus are likely. virtio? ------- From what I understood so far, virtio could help here. Yes, we would need separate drivers, yet data transfer could be super simple. If we had a simple virtio-PCI I2C master device, it could have a really simple kernel driver. It basically takes the I2C transfer it gets, does some sanity checking so no other devices are accessed, and then passes it to the kernel. I have not fully understood yet, if the virtio transportation mechanism is better/required here, or if we can/should still use the existing i2c-dev character interface. Other problems found -------------------- Here is a list of other problems I discovered which need addressing in one way or the other: * exclusive access to I2C devices We currently don't have a way to mark devices as being "in use, don't touch" from userspace. This could be added but we need to decide on the transportation layer first (i2c-dev vs. virtio). * no generic I2C master (at least for x86) Unless I overlooked something, we currently can't simply add a new I2C bus on x86 because there is no virtual hardware encoded just doing that. I found patches for a USB-to-I2C bridge floating around. USB is nicely generic, so probably worth evaluating those again if this task is to be continued. * re-definition of I2C_SLAVE QEMU defines I2C_SLAVE as well as <linux/i2c-dev.h>. So, if that interface is going to be used, we need something to fix this. * likely improvements to the QEMU I2C core From visual review, I am quite sure QEMU I2C core does not support 'repeated start' with the following message having a different I2C destination address than the previous one. This is legal, but up to now very rarely seen in practice. However, with devices becoming more complex and those devices maybe being passed-through as well, more improvements to the QEMU I2C core might be needed as well. Conclusion ---------- These are my finding regarding I2C device passthrough with QEMU. The below patch is a very first step in the "full virtualization" direction because it transports every read byte access directly to the host (totally missing proper I2C start/stop/ack generation). Write byte access is discarded here for security reasons. As described above, I would not recommend this approach any further. My staring point now would be a simplified virtio or virtio-alike device where the transfer is passed-through as such to the host, and not split up into primitives. So the patch itself is somehow already obsolete, but it served well for gaining experience. For the record, the description of my test procedure is here: https://elinux.org/R-Car/I2C-Virtualization I will still be around for further discussion. I can't really tell, though, if there will be a follow-up task for me to continue this. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- hw/i2c/Makefile.objs | 2 +- hw/i2c/host-i2cdev.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 111 insertions(+), 1 deletion(-) create mode 100644 hw/i2c/host-i2cdev.c