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[Qemu-devel] [PATCH V9 0/8] Xen PCI Passthrough
From: |
Anthony PERARD |
Subject: |
[Qemu-devel] [PATCH V9 0/8] Xen PCI Passthrough |
Date: |
Wed, 21 Mar 2012 18:28:57 +0000 |
Hi all,
This patch series introduces the PCI passthrough for Xen.
Please review patches number 1, 2, 3, 4 and 7.
First, we have HostPCIDevice that help to access one PCI device of the host.
Last part, but not least, the PCI passthrough device himself. Cut in 3 parts
(or file), there is one to take care of the initialisation of a passthrough
device. The second one handle everything about the config address space, there
are specifics functions for every config register. The third one is to handle
MSI.
There is a patch series on xen-devel (applied to xen-unstable) that add the
support of setting a PCI passthrough device through QMP from libxl (xen tool
stack). It is just a call to device_add, with the driver parametter
hostaddr="0000:07:00.1".
Change v8-v9:
- rename PCI_DEVICE_ID_INTEL_82599_VF to PCI_DEVICE_ID_INTEL_82599_SFP_VF to
be consistant with Linux.
- remove the patch about checking bar overlaps, the function is now in
xen_pci_passthrough.c and uses pci_for_each_device.
- Introduce an opaque argument to the function pci_for_each_device.
- Fix the usage of memory listener: declare a stub function for every
callback in the MemoryListener.
Change v7-v8:
- rework of the memory mapping of BARs. We now use a memory_listener to update
a xen memory_mapping when a memory_region is updated.
- address few comment from Michael in the pci_check_overlap function.
- fix the handling of the ROM slot.
Change v6-v7:
- few fix and rebased on master
- remove of the power management capability, keep the minimum like if it is
always desactivated.
- new patch: port of patch from the qemu-xen fork.
Change v5-v6:
- msitraslate code have been removed.
- code for the power management capability is removed, but will be re-added
for the next version of the patch series as a separate patch.
- new patch to remove a check in pci_parse_devaddr.
- use pci_default_config_write, so no more hack to handle the BAR mapping in
QEMU.
- improve the code in general (a bit more comprehensible).
- update to QOM.
Change v4-v5:
- return -errno if there is an error in host_pci_get_*
- rename internal function get_value to get_hex_value (and return the same
error value has get_resource)
Change v3-v4:
- host_pci_get_* can now return an error, and take an extra parameter, a
pointer to store the wanted value.
- The memory_region for the PCI BAR are handled "manualy" because calling
pci_default_write_config was not possible, because the XenPT handle the
PCIIORegion it self. This make possible to do a device_remove.
- Introduction of PT_ERR and PT_WARN macro to print debug and error messages.
Also, these macro as well as PT_LOG will always print the short BDF of the
device in the guest point of view.
- PT_ERR is print by default (for all error messages).
- Some debug/error message have been improve and should be a bit more useful.
- hw_error have been removed from the code, and have been replaced by either
a call to qemu_system_shudown_request() (that lead to a domain destroy) or
a failed in the initialisation of the device.
- Now, every patchs should compile with no error.
Change v2-v3;
- in host-pci-device.c:
- Return more usefull error code in get_ressource().
- Use macro in host_pci_find_ext_cap_offset instead of raw number. But I
still not sure if PCI_MAX_EXT_CAP is right, it's result is 480 like it
was before, so it's maybe ok.
- All use of MSI stuff in two first pci passthrough patch have been removed
and move to the last patch.
Change v1-v2:
- fix style issue (checkpatch.pl)
- set the original authors, add some missing copyright headers
- HostPCIDevice:
- introduce HostPCIIORegions (with base_addr, size, flags)
- save all flags from ./resource and store it in a separate field.
- fix endianess on write
- new host_pci_dev_put function
- use pci.c like interface host_pci_get/set_byte/word/long (instead of
host_pci_read/write_)
- compile HostPCIDevice only on linux (as well as xen_pci_passthrough)
- introduce apic-msidef.h file.
- no more run_one_timer, if a pci device is in the middle of a power
transition, just "return an error" in config read/write
- use a global var mapped_machine_irq (local to xen_pci_passthrough.c)
- add msitranslate and power-mgmt ad qdev property
Allen Kay (2):
Introduce Xen PCI Passthrough, qdevice (1/3)
Introduce Xen PCI Passthrough, PCI config space helpers (2/3)
Anthony PERARD (5):
pci_ids: Add INTEL_82599_VF id.
configure: Introduce --enable-xen-pci-passthrough.
Introduce HostPCIDevice to access a pci device on the host.
pci.c: Add opaque argument to pci_for_each_device.
Introduce apic-msidef.h
Jiang Yunhong (1):
Introduce Xen PCI Passthrough, MSI (3/3)
Makefile.target | 6 +
configure | 25 +
hw/apic-msidef.h | 30 +
hw/apic.c | 11 +-
hw/host-pci-device.c | 278 +++++
hw/host-pci-device.h | 75 ++
hw/pci.c | 11 +-
hw/pci.h | 4 +-
hw/pci_ids.h | 1 +
hw/xen_common.h | 3 +
hw/xen_pci_passthrough.c | 847 +++++++++++++++
hw/xen_pci_passthrough.h | 303 ++++++
hw/xen_pci_passthrough_config_init.c | 1866 ++++++++++++++++++++++++++++++++++
hw/xen_pci_passthrough_msi.c | 615 +++++++++++
hw/xen_platform.c | 8 +-
xen-all.c | 12 +
16 files changed, 4076 insertions(+), 19 deletions(-)
create mode 100644 hw/apic-msidef.h
create mode 100644 hw/host-pci-device.c
create mode 100644 hw/host-pci-device.h
create mode 100644 hw/xen_pci_passthrough.c
create mode 100644 hw/xen_pci_passthrough.h
create mode 100644 hw/xen_pci_passthrough_config_init.c
create mode 100644 hw/xen_pci_passthrough_msi.c
--
Anthony PERARD
- [Qemu-devel] [PATCH V9 0/8] Xen PCI Passthrough,
Anthony PERARD <=