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Re: [PULL 19/35] ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge
From: |
Laurent Vivier |
Subject: |
Re: [PULL 19/35] ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge |
Date: |
Wed, 5 Feb 2020 14:26:41 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 |
On 03/02/2020 07:11, David Gibson wrote:
> From: Benjamin Herrenschmidt <address@hidden>
>
> These changes introduces models for the PCIe Host Bridge (PHB4) of the
> POWER9 processor. It includes the PowerBus logic interface (PBCQ),
> IOMMU support, a single PCIe Gen.4 Root Complex, and support for MSI
> and LSI interrupt sources as found on a POWER9 system using the XIVE
> interrupt controller.
>
> POWER9 processor comes with 3 PHB4 PEC (PCI Express Controller) and
> each PEC can have several PHBs. By default,
>
> * PEC0 provides 1 PHB (PHB0)
> * PEC1 provides 2 PHBs (PHB1 and PHB2)
> * PEC2 provides 3 PHBs (PHB3, PHB4 and PHB5)
>
> Each PEC has a set "global" registers and some "per-stack" (per-PHB)
> registers. Those are organized in two XSCOM ranges, the "Nest" range
> and the "PCI" range, each range contains both some "PEC" registers and
> some "per-stack" registers.
>
> No default device layout is provided and PCI devices can be added on
> any of the available PCIe Root Port (pcie.0 .. 2 of a Power9 chip)
> with address 0x0 as the firwware (skiboot) only accepts a single
> device per root port. To run a simple system with a network and a
> storage adapters, use a command line options such as :
>
> -device e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=pcie.0,addr=0x0
> -netdev
> bridge,id=net0,helper=/usr/libexec/qemu-bridge-helper,br=virbr0,id=hostnet0
>
> -device megasas,id=scsi0,bus=pcie.1,addr=0x0
> -drive file=$disk,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=none
> -device
> scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2
>
> If more are needed, include a bridge.
>
> Multi chip is supported, each chip adding its set of PHB4 controllers
> and its PCI busses. The model doesn't emulate the EEH error handling.
>
> This model is not ready for hotplug yet.
>
> Signed-off-by: Benjamin Herrenschmidt <address@hidden>
> [ clg: - numerous cleanups
> - commit log
> - fix for broken LSI support
> - PHB pic printinfo
> - large QOM rework ]
> Signed-off-by: Cédric Le Goater <address@hidden>
> Message-Id: <address@hidden>
> [dwg: Use device_class_set_props()]
> Signed-off-by: David Gibson <address@hidden>
> ---
> hw/pci-host/Makefile.objs | 1 +
> hw/pci-host/pnv_phb4.c | 1438 +++++++++++++++++++++++++++
> hw/pci-host/pnv_phb4_pec.c | 593 +++++++++++
> hw/ppc/Kconfig | 2 +
> hw/ppc/pnv.c | 107 ++
> include/hw/pci-host/pnv_phb4.h | 230 +++++
> include/hw/pci-host/pnv_phb4_regs.h | 553 ++++++++++
> include/hw/pci/pcie_port.h | 1 +
> include/hw/ppc/pnv.h | 7 +
> include/hw/ppc/pnv_xscom.h | 11 +
> 10 files changed, 2943 insertions(+)
> create mode 100644 hw/pci-host/pnv_phb4.c
> create mode 100644 hw/pci-host/pnv_phb4_pec.c
> create mode 100644 include/hw/pci-host/pnv_phb4.h
> create mode 100644 include/hw/pci-host/pnv_phb4_regs.h
>
...
> diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
> index e27efe9a24..354828bf13 100644
> --- a/hw/ppc/Kconfig
> +++ b/hw/ppc/Kconfig
> @@ -135,6 +135,8 @@ config XIVE_SPAPR
> default y
> depends on PSERIES
> select XIVE
> + select PCI
> + select PCIE_PORT
This patch is about PowerNV, why do we add dependencies for pseries
configuration?
Thanks,
Laurent
- Re: [PULL 34/35] target/ppc: Use probe_write for DCBZ, (continued)
- [PULL 27/35] target/ppc: Build rtas error log upon an MCE, David Gibson, 2020/02/03
- [PULL 30/35] ppc: spapr: Activate the FWNMI functionality, David Gibson, 2020/02/03
- [PULL 29/35] migration: Include migration support for machine check handling, David Gibson, 2020/02/03
- [PULL 35/35] tests: Silence various warnings with pseries, David Gibson, 2020/02/03
- [PULL 20/35] ppc/pnv: Add models for POWER8 PHB3 PCIe Host bridge, David Gibson, 2020/02/03
- [PULL 33/35] target/ppc: Remove redundant mask in DCBZ, David Gibson, 2020/02/03
- [PULL 26/35] target/ppc: Handle NMI guest exit, David Gibson, 2020/02/03
- [PULL 31/35] target/ppc: Use probe_access for LSW, STSW, David Gibson, 2020/02/03
- [PULL 19/35] ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge, David Gibson, 2020/02/03
- Re: [PULL 19/35] ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge,
Laurent Vivier <=
Re: [PULL 00/35] ppc-for-5.0 queue 20200203, Peter Maydell, 2020/02/03