From: Vijaya Kumar K <vijaya.ku...@caviumnetworks.com>
This is based on DraftG version
http://xenbits.xen.org/people/ianc/vits/draftG.pdf
Following major features are supported
- GICv3 ITS support for arm64 platform
- Only Dom0 is supported. For DomU pci passthrough feature
is required.
Changes in v7:
- Rebased to latest staging branch.
- Compiled all the patches individually for both arm32 and arm64
- Patch xen-arm-ITS-implement-hw_irq_controller-for-LPIs.patch
split into two patches.
- xen-arm-ITS-implement-hw_irq_controller-for-LPIs.patch and
- xen-arm-ITS-Plumbing-hw_irq_controller-for-LPIs.patch.
- Moved patch xen-arm-ITS-Add-GITS-registers-emulation.patch
before vITS compilation.
- Merged xen-arm-ITS-Enable-virtual-ITS-driver.patch with
patch xen-arm-ITS-Export-ITS-info-to-Virtual-ITS.patch.
- Dropped patch xen-arm-ITS-Add-32-bit-access-to-GICR_TYPER.patch.
This is only minor change. Hence merged with
xen-arm-ITS-Add-GICR-register-emulation.patch.
- Dropped patch xen-arm-ITS-Introduce-helper-to-get-number-of-event-.patch
- Dropped gic_lpi_supported helper function.
- Changed LPI property table usage and handling.
- Added support to pass nr_lpis from bootargs.
- Added support to enable/disable its support from bootargs.
- Fixed issues around freeing of its_device on error.
- Introduced vits.h file
- Dropped xen-dt-Handle-correctly-node-with-interrupt-map-in-d.patch
from this series as it is already merged.
Could not share code via Github. Network is very slow.
Please, let me know if required.
Changes in v6:
- Rebased to latest staging branch.
- Compiled all the patches individually for both arm32 and arm64
- Split the patch "xen/arm: ITS: Allocate irq descriptors for LPIs" into two.
One for allocating LPI irq_desc and other patch for allocating pending_irq
desc
for LPIs
- Following new patches are introduced
1) xen/arm: Rename NR_IRQs and vgic_num_irqs helper function
2) xen/arm: ITS: Introduce msi_desc for LPIs
3) xen/arm: Move vgic locking inside get_irq_priority callback
4) xen/arm: ITS: Store LPIs allocated and IRQ ID bits per domain
5) xen/arm: ITS: Introduce helper to get number of event IDs
6) xen/arm: ITS: Add virtual ITS availability check helper
7) xen/arm: ITS: Add 32-bit access to GICR_TYPER)
8) xen/arm: ITS: Allocate pending_lpi descriptors for LPIs
- Based on below patch set
http://lists.xen.org/archives/html/xen-devel/2015-08/msg00168.html
Some Major TODOs:
1) Avoid making vits_process_cmd() static in later point of time
2) How to handle LPI that does not have LPI config table entry.
3) Enable/disable ITS to Dom0
Changes in v5:
- Added following new patches
0001-xen-arm-Return-success-if-dt-node-does-not-have-irq-.patch
0004-xen-arm-Set-nr_cpu_ids-to-available-number-of-cpus.patch
0009-xen-arm-ITS-Export-ITS-info-to-Virtual-ITS.patch
0013-xen-arm-ITS-Implement-gic_is_lpi-helper-function.patch
- Split patch #12 into two patches #14 & #16
0014-xen-arm-ITS-Allocate-irq-descriptors-for-LPIs.patch
0016-xen-arm-ITS-Route-LPIs.patch
- Introduce new API to route LPI (route_lpi_to_guest() )
- Moved patch #8 in v4 as patch #19
- irq_descritors for LPIs are allocated dynamically
- Removed RB-tree for managing vitual its devices. Will be
introduced when pci-passthrough is implemented
- its_add_device() api now takes nr_ites and DT its node as parameters
- some function are kept as non-static when introduced in a patch for
compilation purpose and eventually made static when used.
- Tested compilation for arm32
Changes in v4:
- Patch for rate limiting of error message is removed.
- Patch #4 and #5 in v3 is merged
- Merged #13 and #16 as one patch
- hw_irq_controller is implemented for LPIs
- GITS and GICR emulation for LPIs in separate patches
- Removed build functions for ITS command in physical ITS driver
- Added new patch to add and assign devices from platform file
- Enable compilation of vits and pits driver in separate patch
- Replace msi-parent property in all pci dt nodes to single
ITS node generated by Xen for Dom0
Vijaya Kumar K (28):
xen/arm: Add bitmap_find_next_zero_area helper function
xen: Add log2 functionality
xen/arm: Set nr_cpu_ids to available number of cpus
xen/arm: Rename NR_IRQs and vgic_num_irqs helper function
xen/arm: ITS: Port ITS driver to Xen
xen/arm: ITS: Add helper functions to manage its_devices
xen/arm: ITS: Introduce msi_desc for LPIs
xen/arm: ITS: Add APIs to add and assign device
xen/arm: ITS: Introduce gic_is_lpi helper function
xen/arm: ITS: Implement hw_irq_controller for LPIs
xen/arm: ITS: Enable compilation of physical ITS driver
xen/arm: ITS: Plumbing hw_irq_controller for LPIs
xen/arm: Move vgic rank locking inside get_irq_priority
xen/arm: ITS: Initialize physical ITS and export lpi support
xen/arm: ITS: Add virtual ITS driver
xen/arm: ITS: Add virtual ITS commands support
xen/arm: ITS: Add GITS registers emulation
xen/arm: ITS: Export ITS info to Virtual ITS
xen/arm: ITS: Store LPIs allocated per domain
xen/arm: ITS: Add virtual ITS availability check helper
xen/arm: ITS: Add GICR register emulation
xen/arm: ITS: Allocate irq descriptors for LPIs
xen/arm: ITS: Allocate pending_lpi descriptors for LPIs
xen/arm: ITS: Route LPIs
xen/arm: ITS: Add domain specific ITS initialization
xen/arm: ITS: Map ITS translation space
xen/arm: ITS: Generate ITS node for Dom0
xen/arm: ITS: Add pci devices in ThunderX
xen/arch/arm/Makefile | 2 +
xen/arch/arm/domain_build.c | 14 +
xen/arch/arm/gic-hip04.c | 17 +-
xen/arch/arm/gic-v2.c | 17 +-
xen/arch/arm/gic-v3-its.c | 1652 +++++++++++++++++++++++++++++++++++++
xen/arch/arm/gic-v3.c | 127 ++-
xen/arch/arm/gic.c | 66 +-
xen/arch/arm/irq.c | 183 +++-
xen/arch/arm/platforms/Makefile | 1 +
xen/arch/arm/platforms/thunderx.c | 200 +++++
xen/arch/arm/setup.c | 2 +
xen/arch/arm/vgic-v2.c | 6 +-
xen/arch/arm/vgic-v3-its.c | 951 +++++++++++++++++++++
xen/arch/arm/vgic-v3.c | 406 ++++++++-
xen/arch/arm/vgic.c | 146 +++-
xen/common/bitmap.c | 39 +
xen/include/asm-arm/domain.h | 10 +
xen/include/asm-arm/gic-its.h | 313 +++++++
xen/include/asm-arm/gic.h | 21 +-
xen/include/asm-arm/gic_v3_defs.h | 51 +-
xen/include/asm-arm/irq.h | 24 +-
xen/include/asm-arm/vgic.h | 14 +-
xen/include/asm-arm/vits.h | 100 +++
xen/include/xen/bitmap.h | 16 +
xen/include/xen/lib.h | 2 +
xen/include/xen/log2.h | 167 ++++
26 files changed, 4464 insertions(+), 83 deletions(-)
create mode 100644 xen/arch/arm/gic-v3-its.c
create mode 100644 xen/arch/arm/platforms/thunderx.c
create mode 100644 xen/arch/arm/vgic-v3-its.c
create mode 100644 xen/include/asm-arm/gic-its.h
create mode 100644 xen/include/asm-arm/vits.h
create mode 100644 xen/include/xen/log2.h
--
1.7.9.5
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