[PATCH 00/15] PCI: endpoint: Cleanup EPC features

From: Kishon Vijay Abraham I
Date: Mon Jan 07 2019 - 01:43:20 EST

Hi Lorenzo,

The Endpoint controller driver uses features member in 'struct pci_epc'
to advertise the list of supported features to the endpoint function

There are a few shortcomings with this approach.
*) Certain endpoint controllers support fixed size BAR (e.g. TI's
AM654 uses Designware configuration with fixed size BAR). The
size of each BARs cannot be passed to the endpoint function
*) Too many macros for handling EPC features.
*) Endpoint controllers are directly modifying struct pci_epc
members. (I have plans to move struct pci_epc to
drivers/pci/endpoint so that pci_epc members are referenced
only by endpoint core).

To overcome the above shortcomings, introduced pci_epc_get_features()
API, pci_epc_features structure and a ->get_features() callback.

Also added a patch to set BAR flags in pci_epf_alloc_space and
remove it from pci-epf-test function driver.

Tested on TI's DRA7xx platform.


Kishon Vijay Abraham I (15):
PCI: endpoint: Add new pci_epc_ops to get EPC features
PCI: dwc: Add ->get_features() callback function in dw_pcie_ep_ops
PCI: designware-plat: Populate ->get_features() dw_pcie_ep_ops
PCI: pci-dra7xx: Populate ->get_features() dw_pcie_ep_ops
PCI: rockchip: Populate ->get_features() dw_pcie_ep_ops
PCI: cadence: Populate ->get_features() cdns_pcie_epc_ops
PCI: endpoint: Add helper to get first unreserved BAR
PCI: endpoint: Fix pci_epf_alloc_space to set correct MEM TYPE flags
PCI: pci-epf-test: Remove setting epf_bar flags in function driver
PCI: pci-epf-test: Do not allocate next BARs memory if current BAR is
PCI: pci-epf-test: Use pci_epc_get_features to get EPC features
PCI: cadence: Remove pci_epf_linkup from Cadence EP driver
PCI: rockchip: Remove pci_epf_linkup from Rockchip EP driver
PCI: designware-plat: Remove setting epc->features in Designware plat
EP driver
PCI: endpoint: Remove features member in struct pci_epc

drivers/pci/controller/dwc/pci-dra7xx.c | 13 +++
.../pci/controller/dwc/pcie-designware-ep.c | 12 +++
.../pci/controller/dwc/pcie-designware-plat.c | 17 +++-
drivers/pci/controller/dwc/pcie-designware.h | 1 +
drivers/pci/controller/pcie-cadence-ep.c | 25 +++---
drivers/pci/controller/pcie-rockchip-ep.c | 16 +++-
drivers/pci/endpoint/functions/pci-epf-test.c | 80 ++++++++++---------
drivers/pci/endpoint/pci-epc-core.c | 52 ++++++++++++
drivers/pci/endpoint/pci-epf-core.c | 3 +
include/linux/pci-epc.h | 30 +++++--
10 files changed, 185 insertions(+), 64 deletions(-)