(Please ignore previous v3 version and use this one. My fault to not configure base branch before publish :-( Sorry for the noise.) This is v4 of vt-d unit test series. Patch "libcflat: add IS_ALIGNED() macro, and page sizes" is picked up by Drew in the ARM GIC framework series, so please feel free to drop it when needed. Online repo: https://github.com/xzpeter/kvm-unit-tests.git iommu-ut-v4 Please review. Thanks, v4: (same as v3, but with correct patches sent out) v3: - is_power_of_2(): remove outer "()" [Drew] - fix indent for vtd_root_table() [Drew] - pci_find_dev(): keep {} to avoid touching more codes [Drew] - pci_scan_bars(): check whether bar is 64bits [Drew] - pci_enable_defaults(): make it return nothing [Drew] - fix strnang blanks in lib/x86/intel-iommu.h [Drew] - pci_setup_msi(): fix correct assert() inside [Drew] - squash patches: 03+17 08+09 10+11 12+14 [Drew] - remove all "()" for raw defines (numbers) in macros [Drew] v2: - move cpu_relax patch to the beginning, and use them in all places [Drew] - replace all corresponding 256 into PCI_DEVFN_MAX, as well for PCI_BAR_NUM [Drew] - adding is_power_of_2() to replace ONE_BIT_ONLY() [Drew] - add SZ_64K macro [Drew] - declare pci_config_write[wb] in lib/asm-generic/pci-host-bridge.h [Alex] - edu_reg_read/write() add "l" in func name [Drew] - drop pci_set_master(), instead, provide pci_cmd_set_clr() [Drew] - change return code into bool (always) for functions that apply [Drew] - keep old pci_find_dev() interface [Drew/Alex] - use __raw_{read|write}*() for both vt-d and edu register read/writes [Alex] - remove pci_ prefix for all pci_dev fields [Drew] - replace 0xff in cap_handlers[0xff] into (PCI_CAP_ID_MAX + 1) [Drew] - make x86/unittest.cfg simpler by using q35 directly with eim=off [Drew] RFC -> v1: - when init edu device fail, report_skip() rather than return error [Radim] - use asserts rather than "static bool inited" to avoid multiple init of components (affects patch 1/2) [Drew] - moving the first two patches out of the series [Drew] - int vtd_init(), do not setup_idt() since smp_init() did it [Drew] - when edu do not have MSI enabled, skip interrupt test [Radim] - rename vtd_reg_*() into vtd_{read|write}[lq](), and move them to header file [Drew] - use PAGE_MASK when able [Drew] - use "&" instead of "|" in intel-iommu init test (three places) [Drew] - use "vtd_init()" in unit test [Drew] - mention that where intel-iommu.h comes from [Drew] - re-written vtd_gcmd_or(), make it also work on even hardware [Drew] - remove most of the oneline wrapper for VT-d registers, instead, use vtd_{read|write}* with register names [Drew] - remove useless BDF helpers [Drew] - move edu device macros into header file [Drew] - make edu_check_alive static inline [Drew] - remove all useless wrappers in pci-edu.c [Drew] - remove pci_dma_dir_t and all its users, instead, use "bool from_device" [Drew] - not use typedef for structs, to follow Linux/kvm-unit-tests coding style [Drew] - let pci_dev_init() clean and simple, then provide pci_enable_defaults() for more complicated things [Drew] - add one more patch to add intel-iommu test into x86/unittest [Radim] - use 0x60 intr request instead of factorial to trigger edu device interrupt [Drew] - ...and some other changes I just forgot to note down... Currently only a very small test scope is covered: * VT-d init * DMAR: 4 bytes copy * IR: MSI However this series could be a base point to add more test cases for VT-d. The problem is, there are many IOMMU error conditions which are very hard to be triggered in a real guest (IOMMU has merely no interface for guest user, and it's totally running in the background). This piece of work can be a start point if we want to do more complicated things and play around with Intel IOMMU devices (also for IOMMU regression tests). Please review. Thanks, ================= To run the test: ./x86/run ./x86/intel-iommu.flat \ -M q35,kernel-irqchip=split -global ioapic.version=0x20 \ -device intel-iommu,intremap=on -device edu Sample output: pxdev:kvm-unit-tests [new-iommu-ut]# ./iommu_run.sh /root/git/qemu/bin/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio +-device pci-testdev -kernel ./x86/intel-iommu.flat -M q35,kernel-irqchip=split -global ioapic.version=0x20 -device intel-iommu,intremap=on -device edu enabling apic paging enabled cr0 = 80010011 cr3 = 7fff000 cr4 = 20 VT-d version: 0x10 cap: 0x0012008c22260206 ecap: 0x0000000000f00f1a PASS: init status check PASS: fault status check PASS: QI enablement DMAR table address: 0x0000000007ff9000 PASS: DMAR table setup IR table address: 0x0000000007ff8000 PASS: IR table setup PASS: DMAR enablement PASS: IR enablement PASS: DMAR support 39 bits address width PASS: DMAR support huge pages PCI: init dev 0x0020 BAR 0 [MEM] addr 0xfea00000 PCI detected cap 0x5 Detected MSI for device 0x20 offset 0x40 allocated vt-d root entry for PCI bus 0 allocated vt-d context entry for devfn 0x20 map 4K page IOVA 0x0 to 0x7ff7000 (sid=0x0020) edu device DMA start TO addr 0x0 size 0x4 off 0x0 edu device DMA start FROM addr 0x4 size 0x4 off 0x0 PASS: DMAR 4B memcpy test INTR: setup IRTE index 0 MSI: dev 0x20 init 64bit address: addr=0xfee00010, data=0x0 PASS: EDU factorial INTR test Peter Xu (13): x86/asm: add cpu_relax() libcflat: introduce is_power_of_2() x86: intel-iommu: add vt-d init test libcflat: add IS_ALIGNED() macro, and page sizes libcflat: moving MIN/MAX here vm/page: provide PGDIR_OFFSET() macro pci: introduce struct pci_dev pci: provide pci_scan_bars() pci: provide pci_enable_defaults() pci: edu: introduce pci-edu helpers x86: intel-iommu: add dmar test pci: add msi support for 32/64bit address x86: intel-iommu: add IR MSI test lib/alloc.c | 3 - lib/libcflat.h | 14 +++ lib/pci-edu.c | 73 ++++++++++++ lib/pci-edu.h | 83 +++++++++++++ lib/pci-host-generic.c | 9 +- lib/pci-testdev.c | 10 +- lib/pci.c | 157 +++++++++++++++++++++---- lib/pci.h | 39 ++++-- lib/x86/asm/barrier.h | 11 ++ lib/x86/asm/page.h | 3 + lib/x86/intel-iommu.c | 313 +++++++++++++++++++++++++++++++++++++++++++++++++ lib/x86/intel-iommu.h | 142 ++++++++++++++++++++++ lib/x86/vm.c | 4 +- x86/Makefile.common | 1 + x86/Makefile.x86_64 | 2 + x86/intel-iommu.c | 120 +++++++++++++++++++ x86/unittests.cfg | 7 ++ x86/vmexit.c | 27 ++--- 18 files changed, 960 insertions(+), 58 deletions(-) create mode 100644 lib/pci-edu.c create mode 100644 lib/pci-edu.h create mode 100644 lib/x86/intel-iommu.c create mode 100644 lib/x86/intel-iommu.h create mode 100644 x86/intel-iommu.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
