This is next version of vPCI rework. Aim of this series is to prepare
ground for introducing PCI support on ARM platform.
in v12:
- I (Stewart) coordinated with Volodomyr to send this whole series. So,
add my (Stewart) Signed-off-by to all patches.
- The biggest change is to re-work the PCI_COMMAND register patch.
Additional feedback has also been addressed - see individual patches.
- Drop ("pci: msi: pass pdev to pci_enable_msi() function") and
("pci: introduce per-domain PCI rwlock") as they were committed
- Rename ("rangeset: add rangeset_empty() function")
to ("rangeset: add rangeset_purge() function")
- Rename ("vpci/header: rework exit path in init_bars")
to ("vpci/header: rework exit path in init_header()")
in v11:
- Added my (Volodymyr) Signed-off-by tag to all patches
- Patch "vpci/header: emulate PCI_COMMAND register for guests" is in
intermediate state, because it was agreed to rework it once Stewart's
series on register handling are in.
- Addressed comments, please see patch descriptions for details.
in v10:
- Removed patch ("xen/arm: vpci: check guest range"), proper fix
for the issue is part of ("vpci/header: emulate PCI_COMMAND
register for guests")
- Removed patch ("pci/header: reset the command register when adding
devices")
- Added patch ("rangeset: add rangeset_empty() function") because
this function is needed in ("vpci/header: handle p2m range sets
per BAR")
- Added ("vpci/header: handle p2m range sets per BAR") which addressed
an issue discovered by Andrii Chepurnyi during virtio integration
- Added ("pci: msi: pass pdev to pci_enable_msi() function"), which is
prereq for ("pci: introduce per-domain PCI rwlock")
- Fixed "Since v9/v8/... " comments in changelogs to reduce confusion.
I left "Since" entries for older versions, because they were added
by original author of the patches.
in v9:
v9 includes addressed commentes from a previous one. Also it
introduces a couple patches from Stewart. This patches are related to
vPCI use on ARM. Patch "vpci/header: rework exit path in init_bars"
was factored-out from "vpci/header: handle p2m range sets per BAR".
in v8:
The biggest change from previous, mistakenly named, v7 series is how
locking is implemented. Instead of d->vpci_rwlock we introduce
d->pci_lock which has broader scope, as it protects not only domain's
vpci state, but domain's list of PCI devices as well.
As we discussed in IRC with Roger, it is not feasible to rework all
the existing code to use the new lock right away. It was agreed that
any write access to d->pdev_list will be protected by **both**
d->pci_lock in write mode and pcidevs_lock(). Read access on other
hand should be protected by either d->pci_lock in read mode or
pcidevs_lock(). It is expected that existing code will use
pcidevs_lock() and new users will use new rw lock. Of course, this
does not mean that new users shall not use pcidevs_lock() when it is
appropriate.
Changes from previous versions are described in each separate patch.
Oleksandr Andrushchenko (11):
vpci: use per-domain PCI lock to protect vpci structure
vpci: restrict unhandled read/write operations for guests
vpci: add hooks for PCI device assign/de-assign
vpci/header: implement guest BAR register handlers
rangeset: add RANGESETF_no_print flag
vpci/header: handle p2m range sets per BAR
vpci/header: program p2m with guest BAR view
vpci/header: emulate PCI_COMMAND register for guests
vpci: add initial support for virtual PCI bus topology
xen/arm: translate virtual PCI bus topology for guests
xen/arm: account IO handlers for emulated PCI MSI-X
Stewart Hildebrand (1):
xen/arm: vpci: permit access to guest vpci space
Volodymyr Babchuk (3):
vpci/header: rework exit path in init_header()
rangeset: add rangeset_purge() function
arm/vpci: honor access size when returning an error
xen/arch/arm/vpci.c | 72 ++++-
xen/arch/x86/hvm/vmsi.c | 22 +-
xen/arch/x86/hvm/vmx/vmx.c | 2 +-
xen/arch/x86/irq.c | 8 +-
xen/arch/x86/msi.c | 14 +-
xen/arch/x86/physdev.c | 2 +
xen/common/domain.c | 12 +-
xen/common/rangeset.c | 21 +-
xen/drivers/Kconfig | 4 +
xen/drivers/passthrough/pci.c | 32 ++-
xen/drivers/vpci/header.c | 495 +++++++++++++++++++++++++++-------
xen/drivers/vpci/msi.c | 37 ++-
xen/drivers/vpci/msix.c | 59 +++-
xen/drivers/vpci/vpci.c | 129 ++++++++-
xen/include/xen/pci_regs.h | 1 +
xen/include/xen/rangeset.h | 8 +-
xen/include/xen/sched.h | 11 +-
xen/include/xen/vpci.h | 44 ++-
18 files changed, 798 insertions(+), 175 deletions(-)
base-commit: c27c8922f2c6995d688437b0758cec6a27d18320
--
2.43.0