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Message-ID: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com>
Date: Thu, 7 Apr 2016 20:03:17 +0800
From: Shannon Zhao <zhaoshenglong@...wei.com>
To: <linux-arm-kernel@...ts.infradead.org>, <sstabellini@...nel.org>
CC: <catalin.marinas@....com>, <will.deacon@....com>,
<julien.grall@....com>, <david.vrabel@...rix.com>,
<xen-devel@...ts.xen.org>, <devicetree@...r.kernel.org>,
<linux-efi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<shannon.zhao@...aro.org>, <peter.huangpeng@...wei.com>
Subject: [PATCH v11 00/17] Add ACPI support for Xen Dom0 on ARM64
From: Shannon Zhao <shannon.zhao@...aro.org>
This patch set adds ACPI support for Xen Dom0 on ARM64. The relevant Xen
ACPI on ARM64 design document could be found from [1].
This patch set adds a new FDT node "uefi" under /hypervisor to pass UEFI
information. Introduce a bus notifier of AMBA and Platform bus to map
the new added device's MMIO space. Make Xen domain use
xlated_setup_gnttab_pages to setup grant table and a new hypercall to
get event-channel irq.
Regarding the initialization flow of Linux kernel, it needs to move
xen_early_init() before efi_init(). Then xen_early_init() will check
whether it runs on Xen through the /hypervisor node and efi_init() will
call a new function fdt_find_xen_uefi_params(), to parse those
xen,uefi-* parameters just like the existing efi_get_fdt_params().
And in arm64_enable_runtime_services() it will check whether it runs on
Xen and call another new function xen_efi_runtime_setup() to setup
runtime service instead of efi_native_runtime_setup(). The
xen_efi_runtime_setup() will assign the runtime function pointers with
the functions of driver/xen/efi.c.
And since we pass a /hypervisor node and a /chosen node to Dom0, it
needs to check whether the DTS only contains a /hypervisor node and a
/chosen node in acpi_boot_table_init().
Patches are tested on FVP base model.
Thanks,
Shannon
[1] http://lists.xen.org/archives/html/xen-devel/2015-11/msg00488.html
Changes since v10:
* address Rafael's comments on patch 1
* undo the device mmio mappings if it fails in patch 6
Changes since v9:
* address Rafael's comments on patch 1
* check the compatible string of hypervisor node in patch 12
Changes since v8:
* rebased on v4.6-rc1
* print UART device address (PATCH 1)
* use xen_for_each_gfn (PATCH 3)
* reduce indentation by inverting the condition (PATCH 10)
* move xen_early_init() before efi_init() as well for ARM (PATCH 11)
* sync the document with Xen (PATCH 13)
Changes since v7:
* add __init prefix for acpi_get_spcr_uart_addr (PATCH 1)
Changes since v6:
* rebase on linux master
* refactor codes as acpi_get_spcr_uart_addr (PATCH 1)
* sync with Xen (patch 9)
Changes since v5:
* rebase on linux master
* use acpi_dev_resource_memory to parse the device memory info(patch 1)
* sync with Xen (patch 9)
Changes since v4:
* rebase on linux master
* move the check acpi_device_should_be_hidden into
acpi_bus_type_and_status (patch 1)
* use existing function fdt_subnode_offset (patch 16)
Changes since v3:
* rebase on linux master
* print a warning when there is no SPCR table
* rephase the commit message of PATCH 3
* rephase the words of PATCH 13
* use strcmp and factor the function in PATCH 16
* Add several ACKs and RBs, thanks a lot
Changes since v2:
* Use 0 to check if it should ignore the UART
* Fix the use of page_to_xen_pfn
* Factor ACPI and DT parts in xen_guest_init
* Check "uefi" node by full path
* Fix the statement of Documentation/devicetree/bindings/arm/xen.txt
Changes since v1:
* Rebase on linux mainline and wallclock patch from Stefano
* Refactor AMBA and platform device MMIO map to one file
* Use EFI_PARAVIRT to check if it supports XEN EFI
* Refactor Xen EFI codes
* Address other comments
Shannon Zhao (17):
Xen: ACPI: Hide UART used by Xen
xen/grant-table: Move xlated_setup_gnttab_pages to common place
Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn
arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table
xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio
Xen: ARM: Add support for mapping platform device mmio
Xen: ARM: Add support for mapping AMBA device mmio
Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen
xen/hvm/params: Add a new delivery type for event-channel in
HVM_PARAM_CALLBACK_IRQ
arm/xen: Get event-channel irq through HVM_PARAM when booting with
ACPI
ARM: XEN: Move xen_early_init() before efi_init()
ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI
ARM: Xen: Document UEFI support on Xen ARM virtual platforms
XEN: EFI: Move x86 specific codes to architecture directory
ARM64: XEN: Add a function to initialize Xen specific UEFI runtime
services
FDT: Add a helper to get the subnode by given name
Xen: EFI: Parse DT parameters for Xen specific UEFI
Documentation/devicetree/bindings/arm/xen.txt | 35 +++++
arch/arm/include/asm/xen/xen-ops.h | 6 +
arch/arm/kernel/setup.c | 2 +-
arch/arm/xen/Makefile | 1 +
arch/arm/xen/efi.c | 40 ++++++
arch/arm/xen/enlighten.c | 109 ++++++++++----
arch/arm64/include/asm/xen/xen-ops.h | 6 +
arch/arm64/kernel/acpi.c | 14 +-
arch/arm64/kernel/setup.c | 2 +-
arch/arm64/xen/Makefile | 1 +
arch/x86/xen/efi.c | 112 +++++++++++++++
arch/x86/xen/grant-table.c | 57 +-------
drivers/acpi/scan.c | 74 ++++++++++
drivers/firmware/efi/arm-runtime.c | 17 ++-
drivers/firmware/efi/efi.c | 45 +++++-
drivers/of/fdt.c | 13 ++
drivers/xen/Kconfig | 2 +-
drivers/xen/Makefile | 1 +
drivers/xen/arm-device.c | 196 ++++++++++++++++++++++++++
drivers/xen/efi.c | 174 +++++------------------
drivers/xen/xlate_mmu.c | 77 ++++++++++
include/linux/of_fdt.h | 2 +
include/xen/interface/hvm/params.h | 40 +++++-
include/xen/interface/memory.h | 1 +
include/xen/xen-ops.h | 32 +++--
25 files changed, 811 insertions(+), 248 deletions(-)
create mode 100644 arch/arm/include/asm/xen/xen-ops.h
create mode 100644 arch/arm/xen/efi.c
create mode 100644 arch/arm64/include/asm/xen/xen-ops.h
create mode 100644 drivers/xen/arm-device.c
--
2.0.4
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