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Subject[v2 0/6] Add support for PCIe controller to work in endpoint mode on R-Car SoCs
Date
From: "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com>

This patch series adds support for PCIe controller on rcar to work in endpoint mode,
this also extends the epf framework to handle features of outbound regions.

Note:
The cadence/rockchip/designware endpoint drivers are build tested only.

Changes for v2:
1] Fixed review comments from Biju for dt-bindings to include an example
for a tested platform.
2] Fixed review comments from Kishon to extend the features of outbound
regions in epf framework.
3] Added support to parse outbound-ranges in OF.

lspci output on host:
====================

01:00.0 Unassigned class [ff00]: Renesas Technology Corp. Device 002d
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 152
Region 0: Memory at fe200200 (64-bit, non-prefetchable) [size=128]
Region 2: Memory at fe200000 (64-bit, non-prefetchable) [size=256]
Region 4: Memory at fe200100 (64-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Address: 00000004fa36f000 Data: 0001
Masking: fffffffe Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 0.000W
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag+ PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr+ UncorrErr+ FatalErr- UnsuppReq+ AuxPwr- TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s, Exit Latency L0s unlimited
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR-, OBFF Not Supported
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
AtomicOpsCtl: ReqEn-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Capabilities: [100 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
Status: NegoPending- InProgress-
Kernel driver in use: pci-endpoint-test
00: 12 19 2d 00 06 00 10 00 00 00 00 ff 00 00 00 00
10: 04 02 20 fe 00 00 00 00 04 00 20 fe 00 00 00 00
20: 04 01 20 fe 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 98 01 00 00

BAR Test
========
root@g2e:~# pcitest -b 0
BAR0: OKAY
root@g2e:~# pcitest -b 1
BAR1: NOT OKAY
root@g2e:~# pcitest -b 2
BAR2: OKAY
root@g2e:~# pcitest -b 3
BAR3: NOT OKAY
root@g2e:~# pcitest -b 4
BAR4: OKAY
root@g2e:~# pcitest -b 5
BAR5: NOT OKAY

Note: BAR test for 1/3/5 fail because they are configured to be 64bits

Interrupt Test
==============
root@g2e:~# pcitest -i 0
SET IRQ TYPE TO LEGACY: OKAY
root@g2e:~# pcitest -l
LEGACY IRQ: OKAY

Read Test
=========
root@g2e:~# pcitest -r -s 1
READ ( 1 bytes): OKAY
root@g2e:~# pcitest -r -s 1024
READ ( 1024 bytes): OKAY
root@g2e:~# pcitest -r -s 1025
READ ( 1025 bytes): OKAY
root@g2e:~# pcitest -r -s 1024000
READ (1024000 bytes): OKAY
root@g2e:~# pcitest -r -s 1024001
READ (1024001 bytes): OKAY

Write Test
==========
root@g2e:~# pcitest -w -s 1
WRITE ( 1 bytes): OKAY
root@g2e:~# pcitest -w -s 1024
WRITE ( 1024 bytes): OKAY
root@g2e:~# pcitest -w -s 1025
WRITE ( 1025 bytes): OKAY
root@g2e:~# pcitest -w -s 1024000
WRITE (1024000 bytes): OKAY
root@g2e:~# pcitest -w -s 1024001
WRITE (1024001 bytes): OKAY

Copy Test
=========
root@g2e:~# pcitest -c -s 1
COPY ( 1 bytes): OKAY
root@g2e:~# pcitest -c -s 1024
COPY ( 1024 bytes): OKAY
root@g2e:~# pcitest -c -s 1025
COPY ( 1025 bytes): OKAY
root@g2e:~# pcitest -c -s 1024000
COPY (1024000 bytes): OKAY
root@g2e:~# pcitest -c -s 1024001
COPY (1024001 bytes): OKAY

Lad, Prabhakar (6):
pci: pcie-rcar: preparation for adding endpoint support
pci: endpoint: add support to handle features of outbound memory
of: address: add support to parse PCI outbound-ranges
dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint
controller
pci: rcar: add support for rcar pcie controller in endpoint mode
misc: pci_endpoint_test: add device-id for RZ/G2E pcie controller

.../devicetree/bindings/pci/rcar-pci-ep.txt | 37 +
arch/arm64/configs/defconfig | 2 +-
drivers/misc/pci_endpoint_test.c | 3 +
drivers/of/address.c | 44 +-
drivers/pci/controller/Kconfig | 11 +-
drivers/pci/controller/Makefile | 3 +-
drivers/pci/controller/dwc/pcie-designware-ep.c | 30 +-
drivers/pci/controller/pcie-cadence-ep.c | 11 +-
drivers/pci/controller/pcie-rcar-ep.c | 494 ++++++++
drivers/pci/controller/pcie-rcar-host.c | 1056 +++++++++++++++++
drivers/pci/controller/pcie-rcar.c | 1229 +-------------------
drivers/pci/controller/pcie-rcar.h | 129 ++
drivers/pci/controller/pcie-rockchip-ep.c | 13 +-
drivers/pci/endpoint/functions/pci-epf-test.c | 47 +-
drivers/pci/endpoint/pci-epc-core.c | 7 +-
drivers/pci/endpoint/pci-epc-mem.c | 216 +++-
include/linux/of_address.h | 21 +
include/linux/pci-epc.h | 72 +-
18 files changed, 2152 insertions(+), 1273 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/rcar-pci-ep.txt
create mode 100644 drivers/pci/controller/pcie-rcar-ep.c
create mode 100644 drivers/pci/controller/pcie-rcar-host.c
create mode 100644 drivers/pci/controller/pcie-rcar.h

--
2.7.4

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