[PATCH v8 0/8] Add SR-IOV support in PCIe Endpoint Core

Kishon Vijay Abraham I
2021-08-11T06:47:39Z

Patch series
*) Adds support to add virtual functions to enable endpoint controller
which supports SR-IOV capability
*) Add support in Cadence endpoint driver to configure virtual functions
*) Enable pci_endpoint_test driver to create pci_device for virtual
functions

v1 of the patch series can be found at [1]
v2 of the patch series can be found at [2]
v3 of the patch series can be found at [3]
v4 of the patch series can be found at [4]
v5 of the patch series can be found at [5]
v6 of the patch series can be found at [6]
v7 of the patch series can be found at [7]

Here both physical functions and virtual functions use the same
pci_endpoint_test driver and existing pcitest utility can be used
to test virtual functions as well.

Changes from v7:
1) Added conditional operator to consicely write code to configure BAR
(Added a new patch to first simplify configuring BAR for physical
function)
2) Return error if virtual function number is > 1 for configuring config
space header

Changes from v6:
*) Rebased to 5.14-rc4

Changes from v5:
*) Rebased to 5.13-rc1

Changes from v4:
*) Added a fix in Cadence driver which was overwriting BAR configuration
of physical function.
*) Didn't include Tom's Acked-by since Cadence driver is modified in
this revision.

Changes from v3:
*) Fixed Rob's comment and added his Reviewed-by as suggested by him.

Changes from v2:
*) Fixed DT binding documentation comment by Rob
*) Fixed the error check in pci-epc-core.c

Changes from v1:
*) Re-based and Re-worked to latest kernel 5.10.0-rc2+ (now has generic
binding for EP)

[1] -> http://lore.kernel.org/r/20191231113534.30405-1-kishon@ti.com
[2] -> http://lore.kernel.org/r/20201112175358.2653-1-kishon@ti.com
[3] -> https://lore.kernel.org/r/20210305050410.9201-1-kishon@ti.com
[4] -> http://lore.kernel.org/r/20210310160943.7606-1-kishon@ti.com
[5] -> https://lore.kernel.org/r/20210419083401.31628-1-kishon@ti.com
[6] -> http://lore.kernel.org/r/20210517074723.10212-1-kishon@ti.com
[7] -> https://lore.kernel.org/r/20210803050310.27122-1-kishon@ti.com

Kishon Vijay Abraham I (8):
dt-bindings: PCI: pci-ep: Add binding to specify virtual function
PCI: endpoint: Add support to add virtual function in endpoint core
PCI: endpoint: Add support to link a physical function to a virtual
function
PCI: endpoint: Add virtual function number in pci_epc ops
PCI: cadence: Simplify code to get register base address for
configuring BAR
PCI: cadence: Add support to configure virtual functions
misc: pci_endpoint_test: Populate sriov_configure ops to configure
SR-IOV device
Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV

.../PCI/endpoint/pci-endpoint-cfs.rst | 12 +-
.../devicetree/bindings/pci/pci-ep.yaml | 7 +
drivers/misc/pci_endpoint_test.c | 1 +
.../pci/controller/cadence/pcie-cadence-ep.c | 194 +++++++++++++-----
drivers/pci/controller/cadence/pcie-cadence.h | 11 +
.../pci/controller/dwc/pcie-designware-ep.c | 36 ++--
drivers/pci/controller/pcie-rcar-ep.c | 19 +-
drivers/pci/controller/pcie-rockchip-ep.c | 18 +-
drivers/pci/endpoint/functions/pci-epf-ntb.c | 89 ++++----
drivers/pci/endpoint/functions/pci-epf-test.c | 74 ++++---
drivers/pci/endpoint/pci-ep-cfs.c | 24 +++
drivers/pci/endpoint/pci-epc-core.c | 134 ++++++++----
drivers/pci/endpoint/pci-epf-core.c | 144 ++++++++++++-
include/linux/pci-epc.h | 57 ++---
include/linux/pci-epf.h | 16 +-
15 files changed, 611 insertions(+), 225 deletions(-)

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2.17.1