pci: rename *host* directory to *controller*

Commit Message

Kishon Vijay Abraham I Dec. 28, 2016, 8:09 a.m. UTC

No functional change. Renamed the *host* directory present inside
drivers/pci to *controller*. Some of the controllers present in
drivers/pci/host is capable of operating in endpoint mode.
So having these drivers in *host* directory might not be appropriate.
This is in preparation for adding endpoint mode support for some of
controller drivers present here.

Signed-off-by: Kishon Vijay Abraham I <[e-mail]>
---
Hi Bjorn,

As discussed during our LPC discussions, I'm posting the rename patch
here. I'll post the rest of EP series before the next merge window.

There might be hiccups because of this renaming but feel this is
necessary for long-term maintenance.

Thanks
Kishon

 MAINTAINERS                                        |   52 ++++++++++----------
 drivers/pci/Kconfig                                |    2 +-
 drivers/pci/Makefile                               |    2 +-
 drivers/pci/{host => controller}/Kconfig           |    0
 drivers/pci/{host => controller}/Makefile          |    0
 drivers/pci/{host => controller}/pci-aardvark.c    |    0
 drivers/pci/{host => controller}/pci-dra7xx.c      |    0
 drivers/pci/{host => controller}/pci-exynos.c      |    0
 drivers/pci/{host => controller}/pci-host-common.c |    0
 .../pci/{host => controller}/pci-host-generic.c    |    0
 drivers/pci/{host => controller}/pci-hyperv.c      |    0
 drivers/pci/{host => controller}/pci-imx6.c        |    0
 drivers/pci/{host => controller}/pci-keystone-dw.c |    0
 drivers/pci/{host => controller}/pci-keystone.c    |    0
 drivers/pci/{host => controller}/pci-keystone.h    |    0
 drivers/pci/{host => controller}/pci-layerscape.c  |    0
 drivers/pci/{host => controller}/pci-mvebu.c       |    0
 drivers/pci/{host => controller}/pci-rcar-gen2.c   |    0
 drivers/pci/{host => controller}/pci-tegra.c       |    0
 .../pci/{host => controller}/pci-thunder-ecam.c    |    0
 drivers/pci/{host => controller}/pci-thunder-pem.c |    0
 drivers/pci/{host => controller}/pci-versatile.c   |    0
 drivers/pci/{host => controller}/pci-xgene-msi.c   |    0
 drivers/pci/{host => controller}/pci-xgene.c       |    0
 drivers/pci/{host => controller}/pcie-altera-msi.c |    0
 drivers/pci/{host => controller}/pcie-altera.c     |    0
 drivers/pci/{host => controller}/pcie-armada8k.c   |    0
 drivers/pci/{host => controller}/pcie-artpec6.c    |    0
 .../{host => controller}/pcie-designware-plat.c    |    0
 drivers/pci/{host => controller}/pcie-designware.c |    0
 drivers/pci/{host => controller}/pcie-designware.h |    0
 drivers/pci/{host => controller}/pcie-hisi.c       |    0
 drivers/pci/{host => controller}/pcie-iproc-bcma.c |    0
 drivers/pci/{host => controller}/pcie-iproc-msi.c  |    0
 .../pci/{host => controller}/pcie-iproc-platform.c |    0
 drivers/pci/{host => controller}/pcie-iproc.c      |    0
 drivers/pci/{host => controller}/pcie-iproc.h      |    0
 drivers/pci/{host => controller}/pcie-qcom.c       |    0
 drivers/pci/{host => controller}/pcie-rcar.c       |    0
 drivers/pci/{host => controller}/pcie-rockchip.c   |    0
 drivers/pci/{host => controller}/pcie-spear13xx.c  |    0
 drivers/pci/{host => controller}/pcie-xilinx-nwl.c |    0
 drivers/pci/{host => controller}/pcie-xilinx.c     |    0
 drivers/pci/{host => controller}/vmd.c             |    0
 44 files changed, 28 insertions(+), 28 deletions(-)
 rename drivers/pci/{host => controller}/Kconfig (100%)
 rename drivers/pci/{host => controller}/Makefile (100%)
 rename drivers/pci/{host => controller}/pci-aardvark.c (100%)
 rename drivers/pci/{host => controller}/pci-dra7xx.c (100%)
 rename drivers/pci/{host => controller}/pci-exynos.c (100%)
 rename drivers/pci/{host => controller}/pci-host-common.c (100%)
 rename drivers/pci/{host => controller}/pci-host-generic.c (100%)
 rename drivers/pci/{host => controller}/pci-hyperv.c (100%)
 rename drivers/pci/{host => controller}/pci-imx6.c (100%)
 rename drivers/pci/{host => controller}/pci-keystone-dw.c (100%)
 rename drivers/pci/{host => controller}/pci-keystone.c (100%)
 rename drivers/pci/{host => controller}/pci-keystone.h (100%)
 rename drivers/pci/{host => controller}/pci-layerscape.c (100%)
 rename drivers/pci/{host => controller}/pci-mvebu.c (100%)
 rename drivers/pci/{host => controller}/pci-rcar-gen2.c (100%)
 rename drivers/pci/{host => controller}/pci-tegra.c (100%)
 rename drivers/pci/{host => controller}/pci-thunder-ecam.c (100%)
 rename drivers/pci/{host => controller}/pci-thunder-pem.c (100%)
 rename drivers/pci/{host => controller}/pci-versatile.c (100%)
 rename drivers/pci/{host => controller}/pci-xgene-msi.c (100%)
 rename drivers/pci/{host => controller}/pci-xgene.c (100%)
 rename drivers/pci/{host => controller}/pcie-altera-msi.c (100%)
 rename drivers/pci/{host => controller}/pcie-altera.c (100%)
 rename drivers/pci/{host => controller}/pcie-armada8k.c (100%)
 rename drivers/pci/{host => controller}/pcie-artpec6.c (100%)
 rename drivers/pci/{host => controller}/pcie-designware-plat.c (100%)
 rename drivers/pci/{host => controller}/pcie-designware.c (100%)
 rename drivers/pci/{host => controller}/pcie-designware.h (100%)
 rename drivers/pci/{host => controller}/pcie-hisi.c (100%)
 rename drivers/pci/{host => controller}/pcie-iproc-bcma.c (100%)
 rename drivers/pci/{host => controller}/pcie-iproc-msi.c (100%)
 rename drivers/pci/{host => controller}/pcie-iproc-platform.c (100%)
 rename drivers/pci/{host => controller}/pcie-iproc.c (100%)
 rename drivers/pci/{host => controller}/pcie-iproc.h (100%)
 rename drivers/pci/{host => controller}/pcie-qcom.c (100%)
 rename drivers/pci/{host => controller}/pcie-rcar.c (100%)
 rename drivers/pci/{host => controller}/pcie-rockchip.c (100%)
 rename drivers/pci/{host => controller}/pcie-spear13xx.c (100%)
 rename drivers/pci/{host => controller}/pcie-xilinx-nwl.c (100%)
 rename drivers/pci/{host => controller}/pcie-xilinx.c (100%)
 rename drivers/pci/{host => controller}/vmd.c (100%)

Comments

Christoph Hellwig Dec. 28, 2016, 9:22 a.m. UTC | #1

On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
> Hi Bjorn,
> 
> As discussed during our LPC discussions, I'm posting the rename patch
> here. I'll post the rest of EP series before the next merge window.
> 
> There might be hiccups because of this renaming but feel this is
> necessary for long-term maintenance.

if we do this rename it would be great to get it to Linus NOW after
-rc1 as that minimizes the impact on the 4.11 merge window.

> 
> Thanks
> Kishon
> 
>  MAINTAINERS                                        |   52 ++++++++++----------
>  drivers/pci/Kconfig                                |    2 +-
>  drivers/pci/Makefile                               |    2 +-
>  drivers/pci/{host => controller}/Kconfig           |    0
>  drivers/pci/{host => controller}/Makefile          |    0
>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
>  drivers/pci/{host => controller}/pci-exynos.c      |    0
>  drivers/pci/{host => controller}/pci-host-common.c |    0
>  .../pci/{host => controller}/pci-host-generic.c    |    0
>  drivers/pci/{host => controller}/pci-hyperv.c      |    0
>  drivers/pci/{host => controller}/pci-imx6.c        |    0
>  drivers/pci/{host => controller}/pci-keystone-dw.c |    0
>  drivers/pci/{host => controller}/pci-keystone.c    |    0
>  drivers/pci/{host => controller}/pci-keystone.h    |    0
>  drivers/pci/{host => controller}/pci-layerscape.c  |    0
>  drivers/pci/{host => controller}/pci-mvebu.c       |    0
>  drivers/pci/{host => controller}/pci-rcar-gen2.c   |    0
>  drivers/pci/{host => controller}/pci-tegra.c       |    0
>  .../pci/{host => controller}/pci-thunder-ecam.c    |    0
>  drivers/pci/{host => controller}/pci-thunder-pem.c |    0
>  drivers/pci/{host => controller}/pci-versatile.c   |    0
>  drivers/pci/{host => controller}/pci-xgene-msi.c   |    0
>  drivers/pci/{host => controller}/pci-xgene.c       |    0
>  drivers/pci/{host => controller}/pcie-altera-msi.c |    0
>  drivers/pci/{host => controller}/pcie-altera.c     |    0
>  drivers/pci/{host => controller}/pcie-armada8k.c   |    0
>  drivers/pci/{host => controller}/pcie-artpec6.c    |    0
>  .../{host => controller}/pcie-designware-plat.c    |    0
>  drivers/pci/{host => controller}/pcie-designware.c |    0
>  drivers/pci/{host => controller}/pcie-designware.h |    0
>  drivers/pci/{host => controller}/pcie-hisi.c       |    0
>  drivers/pci/{host => controller}/pcie-iproc-bcma.c |    0
>  drivers/pci/{host => controller}/pcie-iproc-msi.c  |    0
>  .../pci/{host => controller}/pcie-iproc-platform.c |    0
>  drivers/pci/{host => controller}/pcie-iproc.c      |    0
>  drivers/pci/{host => controller}/pcie-iproc.h      |    0
>  drivers/pci/{host => controller}/pcie-qcom.c       |    0
>  drivers/pci/{host => controller}/pcie-rcar.c       |    0
>  drivers/pci/{host => controller}/pcie-rockchip.c   |    0
>  drivers/pci/{host => controller}/pcie-spear13xx.c  |    0
>  drivers/pci/{host => controller}/pcie-xilinx-nwl.c |    0
>  drivers/pci/{host => controller}/pcie-xilinx.c     |    0
>  drivers/pci/{host => controller}/vmd.c             |    0
>  44 files changed, 28 insertions(+), 28 deletions(-)
>  rename drivers/pci/{host => controller}/Kconfig (100%)
>  rename drivers/pci/{host => controller}/Makefile (100%)
>  rename drivers/pci/{host => controller}/pci-aardvark.c (100%)
>  rename drivers/pci/{host => controller}/pci-dra7xx.c (100%)
>  rename drivers/pci/{host => controller}/pci-exynos.c (100%)
>  rename drivers/pci/{host => controller}/pci-host-common.c (100%)
>  rename drivers/pci/{host => controller}/pci-host-generic.c (100%)
>  rename drivers/pci/{host => controller}/pci-hyperv.c (100%)
>  rename drivers/pci/{host => controller}/pci-imx6.c (100%)
>  rename drivers/pci/{host => controller}/pci-keystone-dw.c (100%)
>  rename drivers/pci/{host => controller}/pci-keystone.c (100%)
>  rename drivers/pci/{host => controller}/pci-keystone.h (100%)
>  rename drivers/pci/{host => controller}/pci-layerscape.c (100%)
>  rename drivers/pci/{host => controller}/pci-mvebu.c (100%)
>  rename drivers/pci/{host => controller}/pci-rcar-gen2.c (100%)
>  rename drivers/pci/{host => controller}/pci-tegra.c (100%)
>  rename drivers/pci/{host => controller}/pci-thunder-ecam.c (100%)
>  rename drivers/pci/{host => controller}/pci-thunder-pem.c (100%)
>  rename drivers/pci/{host => controller}/pci-versatile.c (100%)
>  rename drivers/pci/{host => controller}/pci-xgene-msi.c (100%)
>  rename drivers/pci/{host => controller}/pci-xgene.c (100%)
>  rename drivers/pci/{host => controller}/pcie-altera-msi.c (100%)
>  rename drivers/pci/{host => controller}/pcie-altera.c (100%)
>  rename drivers/pci/{host => controller}/pcie-armada8k.c (100%)
>  rename drivers/pci/{host => controller}/pcie-artpec6.c (100%)
>  rename drivers/pci/{host => controller}/pcie-designware-plat.c (100%)
>  rename drivers/pci/{host => controller}/pcie-designware.c (100%)
>  rename drivers/pci/{host => controller}/pcie-designware.h (100%)
>  rename drivers/pci/{host => controller}/pcie-hisi.c (100%)
>  rename drivers/pci/{host => controller}/pcie-iproc-bcma.c (100%)
>  rename drivers/pci/{host => controller}/pcie-iproc-msi.c (100%)
>  rename drivers/pci/{host => controller}/pcie-iproc-platform.c (100%)
>  rename drivers/pci/{host => controller}/pcie-iproc.c (100%)
>  rename drivers/pci/{host => controller}/pcie-iproc.h (100%)
>  rename drivers/pci/{host => controller}/pcie-qcom.c (100%)
>  rename drivers/pci/{host => controller}/pcie-rcar.c (100%)
>  rename drivers/pci/{host => controller}/pcie-rockchip.c (100%)
>  rename drivers/pci/{host => controller}/pcie-spear13xx.c (100%)
>  rename drivers/pci/{host => controller}/pcie-xilinx-nwl.c (100%)
>  rename drivers/pci/{host => controller}/pcie-xilinx.c (100%)
>  rename drivers/pci/{host => controller}/vmd.c (100%)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index cfff2c9..2ac7a4b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -5969,7 +5969,7 @@ F:	arch/x86/kernel/cpu/mshyperv.c
>  F:	drivers/hid/hid-hyperv.c
>  F:	drivers/hv/
>  F:	drivers/input/serio/hyperv-keyboard.c
> -F:	drivers/pci/host/pci-hyperv.c
> +F:	drivers/pci/controller/pci-hyperv.c
>  F:	drivers/net/hyperv/
>  F:	drivers/scsi/storvsc_drv.c
>  F:	drivers/uio/uio_hv_generic.c
> @@ -9413,7 +9413,7 @@ L:	[e-mail] (moderated for non-subscribers)
>  L:	[e-mail]
>  S:	Supported
>  F:	Documentation/devicetree/bindings/pci/altera-pcie.txt
> -F:	drivers/pci/host/pcie-altera.c
> +F:	drivers/pci/controller/pcie-altera.c
>  
>  PCI DRIVER FOR ARM VERSATILE PLATFORM
>  M:	Rob Herring <[e-mail]>
> @@ -9421,7 +9421,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/versatile.txt
> -F:	drivers/pci/host/pci-versatile.c
> +F:	drivers/pci/controller/pci-versatile.c
>  
>  PCI DRIVER FOR ARMADA 8K
>  M:	Thomas Petazzoni <[e-mail]>
> @@ -9429,7 +9429,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
> -F:	drivers/pci/host/pcie-armada8k.c
> +F:	drivers/pci/controller/pcie-armada8k.c
>  
>  PCI DRIVER FOR APPLIEDMICRO XGENE
>  M:	Tanmay Inamdar <[e-mail]>
> @@ -9437,7 +9437,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/xgene-pci.txt
> -F:	drivers/pci/host/pci-xgene.c
> +F:	drivers/pci/controller/pci-xgene.c
>  
>  PCI DRIVER FOR FREESCALE LAYERSCAPE
>  M:	Minghuan Lian <[e-mail]>
> @@ -9447,7 +9447,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
> -F:	drivers/pci/host/*layerscape*
> +F:	drivers/pci/controller/*layerscape*
>  
>  PCI DRIVER FOR IMX6
>  M:	Richard Zhu <[e-mail]>
> @@ -9456,14 +9456,14 @@ L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
> -F:	drivers/pci/host/*imx6*
> +F:	drivers/pci/controller/*imx6*
>  
>  PCI DRIVER FOR TI KEYSTONE
>  M:	Murali Karicheri <[e-mail]>
>  L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
> -F:	drivers/pci/host/*keystone*
> +F:	drivers/pci/controller/*keystone*
>  
>  PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
>  M:	Thomas Petazzoni <[e-mail]>
> @@ -9471,7 +9471,7 @@ M:	Jason Cooper <[e-mail]>
>  L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
> -F:	drivers/pci/host/*mvebu*
> +F:	drivers/pci/controller/*mvebu*
>  
>  PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
>  M:	Thomas Petazzoni <[e-mail]>
> @@ -9479,7 +9479,7 @@ L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
> -F:	drivers/pci/host/pci-aardvark.c
> +F:	drivers/pci/controller/pci-aardvark.c
>  
>  PCI DRIVER FOR NVIDIA TEGRA
>  M:	Thierry Reding <[e-mail]>
> @@ -9487,7 +9487,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Supported
>  F:	Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
> -F:	drivers/pci/host/pci-tegra.c
> +F:	drivers/pci/controller/pci-tegra.c
>  
>  PCI DRIVER FOR TI DRA7XX
>  M:	Kishon Vijay Abraham I <[e-mail]>
> @@ -9495,14 +9495,14 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Supported
>  F:	Documentation/devicetree/bindings/pci/ti-pci.txt
> -F:	drivers/pci/host/pci-dra7xx.c
> +F:	drivers/pci/controller/pci-dra7xx.c
>  
>  PCI DRIVER FOR RENESAS R-CAR
>  M:	Simon Horman <[e-mail]>
>  L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
> -F:	drivers/pci/host/*rcar*
> +F:	drivers/pci/controller/*rcar*
>  
>  PCI DRIVER FOR SAMSUNG EXYNOS
>  M:	Jingoo Han <[e-mail]>
> @@ -9510,7 +9510,7 @@ L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
> -F:	drivers/pci/host/pci-exynos.c
> +F:	drivers/pci/controller/pci-exynos.c
>  
>  PCI DRIVER FOR SYNOPSIS DESIGNWARE
>  M:	Jingoo Han <[e-mail]>
> @@ -9518,7 +9518,7 @@ M:	Joao Pinto <[e-mail]>
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/designware-pcie.txt
> -F:	drivers/pci/host/*designware*
> +F:	drivers/pci/controller/*designware*
>  
>  PCI DRIVER FOR GENERIC OF HOSTS
>  M:	Will Deacon <[e-mail]>
> @@ -9526,20 +9526,20 @@ L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/host-generic-pci.txt
> -F:	drivers/pci/host/pci-host-common.c
> -F:	drivers/pci/host/pci-host-generic.c
> +F:	drivers/pci/controller/pci-host-common.c
> +F:	drivers/pci/controller/pci-host-generic.c
>  
>  PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
>  M:	Keith Busch <[e-mail]>
>  L:	[e-mail]
>  S:	Supported
> -F:	drivers/pci/host/vmd.c
> +F:	drivers/pci/controller/vmd.c
>  
>  PCIE DRIVER FOR ST SPEAR13XX
>  M:	Pratyush Anand <[e-mail]>
>  L:	[e-mail]
>  S:	Maintained
> -F:	drivers/pci/host/*spear*
> +F:	drivers/pci/controller/*spear*
>  
>  PCI MSI DRIVER FOR ALTERA MSI IP
>  M:	Ley Foon Tan <[e-mail]>
> @@ -9547,7 +9547,7 @@ L:	[e-mail] (moderated for non-subscribers)
>  L:	[e-mail]
>  S:	Supported
>  F:	Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
> -F:	drivers/pci/host/pcie-altera-msi.c
> +F:	drivers/pci/controller/pcie-altera-msi.c
>  
>  PCI MSI DRIVER FOR APPLIEDMICRO XGENE
>  M:	Duc Dang <[e-mail]>
> @@ -9555,7 +9555,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
> -F:	drivers/pci/host/pci-xgene-msi.c
> +F:	drivers/pci/controller/pci-xgene-msi.c
>  
>  PCIE DRIVER FOR AXIS ARTPEC
>  M:	Niklas Cassel <[e-mail]>
> @@ -9564,7 +9564,7 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/axis,artpec*
> -F:	drivers/pci/host/*artpec*
> +F:	drivers/pci/controller/*artpec*
>  
>  PCIE DRIVER FOR HISILICON
>  M:	Zhou Wang <[e-mail]>
> @@ -9572,7 +9572,7 @@ M:	Gabriele Paoloni <[e-mail]>
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
> -F:	drivers/pci/host/pcie-hisi.c
> +F:	drivers/pci/controller/pcie-hisi.c
>  
>  PCIE DRIVER FOR ROCKCHIP
>  M:	Shawn Lin <[e-mail]>
> @@ -9581,14 +9581,14 @@ L:	[e-mail]
>  L:	[e-mail]
>  S:	Maintained
>  F:	Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> -F:	drivers/pci/host/pcie-rockchip.c
> +F:	drivers/pci/controller/pcie-rockchip.c
>  
>  PCIE DRIVER FOR QUALCOMM MSM
>  M:     Stanimir Varbanov <[e-mail]>
>  L:     [e-mail]
>  L:     [e-mail]
>  S:     Maintained
> -F:     drivers/pci/host/*qcom*
> +F:     drivers/pci/controller/*qcom*
>  
>  PCIE DRIVER FOR CAVIUM THUNDERX
>  M:	David Daney <[e-mail]>
> @@ -9596,7 +9596,7 @@ L:	[e-mail]
>  L:	[e-mail] (moderated for non-subscribers)
>  S:	Supported
>  F:	Documentation/devicetree/bindings/pci/pci-thunder-*
> -F:	drivers/pci/host/pci-thunder-*
> +F:	drivers/pci/controller/pci-thunder-*
>  
>  PCMCIA SUBSYSTEM
>  P:	Linux PCMCIA Team
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index 6555eb7..fa56abd 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -132,4 +132,4 @@ config PCI_HYPERV
>            PCI devices from a PCI backend to support PCI driver domains.
>  
>  source "drivers/pci/hotplug/Kconfig"
> -source "drivers/pci/host/Kconfig"
> +source "drivers/pci/controller/Kconfig"
> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
> index 8db5079..94bf91d 100644
> --- a/drivers/pci/Makefile
> +++ b/drivers/pci/Makefile
> @@ -67,4 +67,4 @@ obj-$(CONFIG_OF) += of.o
>  ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
>  
>  # PCI host controller drivers
> -obj-y += host/
> +obj-y += controller/
> diff --git a/drivers/pci/host/Kconfig b/drivers/pci/controller/Kconfig
> similarity index 100%
> rename from drivers/pci/host/Kconfig
> rename to drivers/pci/controller/Kconfig
> diff --git a/drivers/pci/host/Makefile b/drivers/pci/controller/Makefile
> similarity index 100%
> rename from drivers/pci/host/Makefile
> rename to drivers/pci/controller/Makefile
> diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
> similarity index 100%
> rename from drivers/pci/host/pci-aardvark.c
> rename to drivers/pci/controller/pci-aardvark.c
> diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/controller/pci-dra7xx.c
> similarity index 100%
> rename from drivers/pci/host/pci-dra7xx.c
> rename to drivers/pci/controller/pci-dra7xx.c
> diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/controller/pci-exynos.c
> similarity index 100%
> rename from drivers/pci/host/pci-exynos.c
> rename to drivers/pci/controller/pci-exynos.c
> diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
> similarity index 100%
> rename from drivers/pci/host/pci-host-common.c
> rename to drivers/pci/controller/pci-host-common.c
> diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
> similarity index 100%
> rename from drivers/pci/host/pci-host-generic.c
> rename to drivers/pci/controller/pci-host-generic.c
> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
> similarity index 100%
> rename from drivers/pci/host/pci-hyperv.c
> rename to drivers/pci/controller/pci-hyperv.c
> diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/controller/pci-imx6.c
> similarity index 100%
> rename from drivers/pci/host/pci-imx6.c
> rename to drivers/pci/controller/pci-imx6.c
> diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/controller/pci-keystone-dw.c
> similarity index 100%
> rename from drivers/pci/host/pci-keystone-dw.c
> rename to drivers/pci/controller/pci-keystone-dw.c
> diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/controller/pci-keystone.c
> similarity index 100%
> rename from drivers/pci/host/pci-keystone.c
> rename to drivers/pci/controller/pci-keystone.c
> diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/controller/pci-keystone.h
> similarity index 100%
> rename from drivers/pci/host/pci-keystone.h
> rename to drivers/pci/controller/pci-keystone.h
> diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/controller/pci-layerscape.c
> similarity index 100%
> rename from drivers/pci/host/pci-layerscape.c
> rename to drivers/pci/controller/pci-layerscape.c
> diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
> similarity index 100%
> rename from drivers/pci/host/pci-mvebu.c
> rename to drivers/pci/controller/pci-mvebu.c
> diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
> similarity index 100%
> rename from drivers/pci/host/pci-rcar-gen2.c
> rename to drivers/pci/controller/pci-rcar-gen2.c
> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
> similarity index 100%
> rename from drivers/pci/host/pci-tegra.c
> rename to drivers/pci/controller/pci-tegra.c
> diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
> similarity index 100%
> rename from drivers/pci/host/pci-thunder-ecam.c
> rename to drivers/pci/controller/pci-thunder-ecam.c
> diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
> similarity index 100%
> rename from drivers/pci/host/pci-thunder-pem.c
> rename to drivers/pci/controller/pci-thunder-pem.c
> diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
> similarity index 100%
> rename from drivers/pci/host/pci-versatile.c
> rename to drivers/pci/controller/pci-versatile.c
> diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
> similarity index 100%
> rename from drivers/pci/host/pci-xgene-msi.c
> rename to drivers/pci/controller/pci-xgene-msi.c
> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
> similarity index 100%
> rename from drivers/pci/host/pci-xgene.c
> rename to drivers/pci/controller/pci-xgene.c
> diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
> similarity index 100%
> rename from drivers/pci/host/pcie-altera-msi.c
> rename to drivers/pci/controller/pcie-altera-msi.c
> diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
> similarity index 100%
> rename from drivers/pci/host/pcie-altera.c
> rename to drivers/pci/controller/pcie-altera.c
> diff --git a/drivers/pci/host/pcie-armada8k.c b/drivers/pci/controller/pcie-armada8k.c
> similarity index 100%
> rename from drivers/pci/host/pcie-armada8k.c
> rename to drivers/pci/controller/pcie-armada8k.c
> diff --git a/drivers/pci/host/pcie-artpec6.c b/drivers/pci/controller/pcie-artpec6.c
> similarity index 100%
> rename from drivers/pci/host/pcie-artpec6.c
> rename to drivers/pci/controller/pcie-artpec6.c
> diff --git a/drivers/pci/host/pcie-designware-plat.c b/drivers/pci/controller/pcie-designware-plat.c
> similarity index 100%
> rename from drivers/pci/host/pcie-designware-plat.c
> rename to drivers/pci/controller/pcie-designware-plat.c
> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/controller/pcie-designware.c
> similarity index 100%
> rename from drivers/pci/host/pcie-designware.c
> rename to drivers/pci/controller/pcie-designware.c
> diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/controller/pcie-designware.h
> similarity index 100%
> rename from drivers/pci/host/pcie-designware.h
> rename to drivers/pci/controller/pcie-designware.h
> diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/controller/pcie-hisi.c
> similarity index 100%
> rename from drivers/pci/host/pcie-hisi.c
> rename to drivers/pci/controller/pcie-hisi.c
> diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
> similarity index 100%
> rename from drivers/pci/host/pcie-iproc-bcma.c
> rename to drivers/pci/controller/pcie-iproc-bcma.c
> diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c
> similarity index 100%
> rename from drivers/pci/host/pcie-iproc-msi.c
> rename to drivers/pci/controller/pcie-iproc-msi.c
> diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
> similarity index 100%
> rename from drivers/pci/host/pcie-iproc-platform.c
> rename to drivers/pci/controller/pcie-iproc-platform.c
> diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
> similarity index 100%
> rename from drivers/pci/host/pcie-iproc.c
> rename to drivers/pci/controller/pcie-iproc.c
> diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/controller/pcie-iproc.h
> similarity index 100%
> rename from drivers/pci/host/pcie-iproc.h
> rename to drivers/pci/controller/pcie-iproc.h
> diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/controller/pcie-qcom.c
> similarity index 100%
> rename from drivers/pci/host/pcie-qcom.c
> rename to drivers/pci/controller/pcie-qcom.c
> diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
> similarity index 100%
> rename from drivers/pci/host/pcie-rcar.c
> rename to drivers/pci/controller/pcie-rcar.c
> diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
> similarity index 100%
> rename from drivers/pci/host/pcie-rockchip.c
> rename to drivers/pci/controller/pcie-rockchip.c
> diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/controller/pcie-spear13xx.c
> similarity index 100%
> rename from drivers/pci/host/pcie-spear13xx.c
> rename to drivers/pci/controller/pcie-spear13xx.c
> diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
> similarity index 100%
> rename from drivers/pci/host/pcie-xilinx-nwl.c
> rename to drivers/pci/controller/pcie-xilinx-nwl.c
> diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
> similarity index 100%
> rename from drivers/pci/host/pcie-xilinx.c
> rename to drivers/pci/controller/pcie-xilinx.c
> diff --git a/drivers/pci/host/vmd.c b/drivers/pci/controller/vmd.c
> similarity index 100%
> rename from drivers/pci/host/vmd.c
> rename to drivers/pci/controller/vmd.c
> -- 
> 1.7.9.5
> 
---end quoted text---
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Kishon Vijay Abraham I Dec. 28, 2016, 10:40 a.m. UTC | #2

On Wednesday 28 December 2016 02:52 PM, Christoph Hellwig wrote:
> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>> Hi Bjorn,
>>
>> As discussed during our LPC discussions, I'm posting the rename patch
>> here. I'll post the rest of EP series before the next merge window.
>>
>> There might be hiccups because of this renaming but feel this is
>> necessary for long-term maintenance.
> 
> if we do this rename it would be great to get it to Linus NOW after
> -rc1 as that minimizes the impact on the 4.11 merge window.

+1
> 
>>
>> Thanks
>> Kishon
>>
>>  MAINTAINERS                                        |   52 ++++++++++----------
>>  drivers/pci/Kconfig                                |    2 +-
>>  drivers/pci/Makefile                               |    2 +-
>>  drivers/pci/{host => controller}/Kconfig           |    0
>>  drivers/pci/{host => controller}/Makefile          |    0
>>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
>>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
>>  drivers/pci/{host => controller}/pci-exynos.c      |    0
>>  drivers/pci/{host => controller}/pci-host-common.c |    0
>>  .../pci/{host => controller}/pci-host-generic.c    |    0
>>  drivers/pci/{host => controller}/pci-hyperv.c      |    0
>>  drivers/pci/{host => controller}/pci-imx6.c        |    0
>>  drivers/pci/{host => controller}/pci-keystone-dw.c |    0
>>  drivers/pci/{host => controller}/pci-keystone.c    |    0
>>  drivers/pci/{host => controller}/pci-keystone.h    |    0
>>  drivers/pci/{host => controller}/pci-layerscape.c  |    0
>>  drivers/pci/{host => controller}/pci-mvebu.c       |    0
>>  drivers/pci/{host => controller}/pci-rcar-gen2.c   |    0
>>  drivers/pci/{host => controller}/pci-tegra.c       |    0
>>  .../pci/{host => controller}/pci-thunder-ecam.c    |    0
>>  drivers/pci/{host => controller}/pci-thunder-pem.c |    0
>>  drivers/pci/{host => controller}/pci-versatile.c   |    0
>>  drivers/pci/{host => controller}/pci-xgene-msi.c   |    0
>>  drivers/pci/{host => controller}/pci-xgene.c       |    0
>>  drivers/pci/{host => controller}/pcie-altera-msi.c |    0
>>  drivers/pci/{host => controller}/pcie-altera.c     |    0
>>  drivers/pci/{host => controller}/pcie-armada8k.c   |    0
>>  drivers/pci/{host => controller}/pcie-artpec6.c    |    0
>>  .../{host => controller}/pcie-designware-plat.c    |    0
>>  drivers/pci/{host => controller}/pcie-designware.c |    0
>>  drivers/pci/{host => controller}/pcie-designware.h |    0
>>  drivers/pci/{host => controller}/pcie-hisi.c       |    0
>>  drivers/pci/{host => controller}/pcie-iproc-bcma.c |    0
>>  drivers/pci/{host => controller}/pcie-iproc-msi.c  |    0
>>  .../pci/{host => controller}/pcie-iproc-platform.c |    0
>>  drivers/pci/{host => controller}/pcie-iproc.c      |    0
>>  drivers/pci/{host => controller}/pcie-iproc.h      |    0
>>  drivers/pci/{host => controller}/pcie-qcom.c       |    0
>>  drivers/pci/{host => controller}/pcie-rcar.c       |    0
>>  drivers/pci/{host => controller}/pcie-rockchip.c   |    0
>>  drivers/pci/{host => controller}/pcie-spear13xx.c  |    0
>>  drivers/pci/{host => controller}/pcie-xilinx-nwl.c |    0
>>  drivers/pci/{host => controller}/pcie-xilinx.c     |    0
>>  drivers/pci/{host => controller}/vmd.c             |    0
>>  44 files changed, 28 insertions(+), 28 deletions(-)
>>  rename drivers/pci/{host => controller}/Kconfig (100%)
>>  rename drivers/pci/{host => controller}/Makefile (100%)
>>  rename drivers/pci/{host => controller}/pci-aardvark.c (100%)
>>  rename drivers/pci/{host => controller}/pci-dra7xx.c (100%)
>>  rename drivers/pci/{host => controller}/pci-exynos.c (100%)
>>  rename drivers/pci/{host => controller}/pci-host-common.c (100%)
>>  rename drivers/pci/{host => controller}/pci-host-generic.c (100%)
>>  rename drivers/pci/{host => controller}/pci-hyperv.c (100%)
>>  rename drivers/pci/{host => controller}/pci-imx6.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone-dw.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone.h (100%)
>>  rename drivers/pci/{host => controller}/pci-layerscape.c (100%)
>>  rename drivers/pci/{host => controller}/pci-mvebu.c (100%)
>>  rename drivers/pci/{host => controller}/pci-rcar-gen2.c (100%)
>>  rename drivers/pci/{host => controller}/pci-tegra.c (100%)
>>  rename drivers/pci/{host => controller}/pci-thunder-ecam.c (100%)
>>  rename drivers/pci/{host => controller}/pci-thunder-pem.c (100%)
>>  rename drivers/pci/{host => controller}/pci-versatile.c (100%)
>>  rename drivers/pci/{host => controller}/pci-xgene-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pci-xgene.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-altera-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-altera.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-armada8k.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-artpec6.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware-plat.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware.h (100%)
>>  rename drivers/pci/{host => controller}/pcie-hisi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-bcma.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-platform.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc.h (100%)
>>  rename drivers/pci/{host => controller}/pcie-qcom.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-rcar.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-rockchip.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-spear13xx.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-xilinx-nwl.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-xilinx.c (100%)
>>  rename drivers/pci/{host => controller}/vmd.c (100%)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index cfff2c9..2ac7a4b 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -5969,7 +5969,7 @@ F:	arch/x86/kernel/cpu/mshyperv.c
>>  F:	drivers/hid/hid-hyperv.c
>>  F:	drivers/hv/
>>  F:	drivers/input/serio/hyperv-keyboard.c
>> -F:	drivers/pci/host/pci-hyperv.c
>> +F:	drivers/pci/controller/pci-hyperv.c
>>  F:	drivers/net/hyperv/
>>  F:	drivers/scsi/storvsc_drv.c
>>  F:	drivers/uio/uio_hv_generic.c
>> @@ -9413,7 +9413,7 @@ L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/altera-pcie.txt
>> -F:	drivers/pci/host/pcie-altera.c
>> +F:	drivers/pci/controller/pcie-altera.c
>>  
>>  PCI DRIVER FOR ARM VERSATILE PLATFORM
>>  M:	Rob Herring <[e-mail]>
>> @@ -9421,7 +9421,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/versatile.txt
>> -F:	drivers/pci/host/pci-versatile.c
>> +F:	drivers/pci/controller/pci-versatile.c
>>  
>>  PCI DRIVER FOR ARMADA 8K
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9429,7 +9429,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
>> -F:	drivers/pci/host/pcie-armada8k.c
>> +F:	drivers/pci/controller/pcie-armada8k.c
>>  
>>  PCI DRIVER FOR APPLIEDMICRO XGENE
>>  M:	Tanmay Inamdar <[e-mail]>
>> @@ -9437,7 +9437,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/xgene-pci.txt
>> -F:	drivers/pci/host/pci-xgene.c
>> +F:	drivers/pci/controller/pci-xgene.c
>>  
>>  PCI DRIVER FOR FREESCALE LAYERSCAPE
>>  M:	Minghuan Lian <[e-mail]>
>> @@ -9447,7 +9447,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*layerscape*
>> +F:	drivers/pci/controller/*layerscape*
>>  
>>  PCI DRIVER FOR IMX6
>>  M:	Richard Zhu <[e-mail]>
>> @@ -9456,14 +9456,14 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
>> -F:	drivers/pci/host/*imx6*
>> +F:	drivers/pci/controller/*imx6*
>>  
>>  PCI DRIVER FOR TI KEYSTONE
>>  M:	Murali Karicheri <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/*keystone*
>> +F:	drivers/pci/controller/*keystone*
>>  
>>  PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9471,7 +9471,7 @@ M:	Jason Cooper <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/*mvebu*
>> +F:	drivers/pci/controller/*mvebu*
>>  
>>  PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9479,7 +9479,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
>> -F:	drivers/pci/host/pci-aardvark.c
>> +F:	drivers/pci/controller/pci-aardvark.c
>>  
>>  PCI DRIVER FOR NVIDIA TEGRA
>>  M:	Thierry Reding <[e-mail]>
>> @@ -9487,7 +9487,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
>> -F:	drivers/pci/host/pci-tegra.c
>> +F:	drivers/pci/controller/pci-tegra.c
>>  
>>  PCI DRIVER FOR TI DRA7XX
>>  M:	Kishon Vijay Abraham I <[e-mail]>
>> @@ -9495,14 +9495,14 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/ti-pci.txt
>> -F:	drivers/pci/host/pci-dra7xx.c
>> +F:	drivers/pci/controller/pci-dra7xx.c
>>  
>>  PCI DRIVER FOR RENESAS R-CAR
>>  M:	Simon Horman <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*rcar*
>> +F:	drivers/pci/controller/*rcar*
>>  
>>  PCI DRIVER FOR SAMSUNG EXYNOS
>>  M:	Jingoo Han <[e-mail]>
>> @@ -9510,7 +9510,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/pci-exynos.c
>> +F:	drivers/pci/controller/pci-exynos.c
>>  
>>  PCI DRIVER FOR SYNOPSIS DESIGNWARE
>>  M:	Jingoo Han <[e-mail]>
>> @@ -9518,7 +9518,7 @@ M:	Joao Pinto <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/designware-pcie.txt
>> -F:	drivers/pci/host/*designware*
>> +F:	drivers/pci/controller/*designware*
>>  
>>  PCI DRIVER FOR GENERIC OF HOSTS
>>  M:	Will Deacon <[e-mail]>
>> @@ -9526,20 +9526,20 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/host-generic-pci.txt
>> -F:	drivers/pci/host/pci-host-common.c
>> -F:	drivers/pci/host/pci-host-generic.c
>> +F:	drivers/pci/controller/pci-host-common.c
>> +F:	drivers/pci/controller/pci-host-generic.c
>>  
>>  PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
>>  M:	Keith Busch <[e-mail]>
>>  L:	[e-mail]
>>  S:	Supported
>> -F:	drivers/pci/host/vmd.c
>> +F:	drivers/pci/controller/vmd.c
>>  
>>  PCIE DRIVER FOR ST SPEAR13XX
>>  M:	Pratyush Anand <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*spear*
>> +F:	drivers/pci/controller/*spear*
>>  
>>  PCI MSI DRIVER FOR ALTERA MSI IP
>>  M:	Ley Foon Tan <[e-mail]>
>> @@ -9547,7 +9547,7 @@ L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
>> -F:	drivers/pci/host/pcie-altera-msi.c
>> +F:	drivers/pci/controller/pcie-altera-msi.c
>>  
>>  PCI MSI DRIVER FOR APPLIEDMICRO XGENE
>>  M:	Duc Dang <[e-mail]>
>> @@ -9555,7 +9555,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
>> -F:	drivers/pci/host/pci-xgene-msi.c
>> +F:	drivers/pci/controller/pci-xgene-msi.c
>>  
>>  PCIE DRIVER FOR AXIS ARTPEC
>>  M:	Niklas Cassel <[e-mail]>
>> @@ -9564,7 +9564,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/axis,artpec*
>> -F:	drivers/pci/host/*artpec*
>> +F:	drivers/pci/controller/*artpec*
>>  
>>  PCIE DRIVER FOR HISILICON
>>  M:	Zhou Wang <[e-mail]>
>> @@ -9572,7 +9572,7 @@ M:	Gabriele Paoloni <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
>> -F:	drivers/pci/host/pcie-hisi.c
>> +F:	drivers/pci/controller/pcie-hisi.c
>>  
>>  PCIE DRIVER FOR ROCKCHIP
>>  M:	Shawn Lin <[e-mail]>
>> @@ -9581,14 +9581,14 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> -F:	drivers/pci/host/pcie-rockchip.c
>> +F:	drivers/pci/controller/pcie-rockchip.c
>>  
>>  PCIE DRIVER FOR QUALCOMM MSM
>>  M:     Stanimir Varbanov <[e-mail]>
>>  L:     [e-mail]
>>  L:     [e-mail]
>>  S:     Maintained
>> -F:     drivers/pci/host/*qcom*
>> +F:     drivers/pci/controller/*qcom*
>>  
>>  PCIE DRIVER FOR CAVIUM THUNDERX
>>  M:	David Daney <[e-mail]>
>> @@ -9596,7 +9596,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/pci-thunder-*
>> -F:	drivers/pci/host/pci-thunder-*
>> +F:	drivers/pci/controller/pci-thunder-*
>>  
>>  PCMCIA SUBSYSTEM
>>  P:	Linux PCMCIA Team
>> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
>> index 6555eb7..fa56abd 100644
>> --- a/drivers/pci/Kconfig
>> +++ b/drivers/pci/Kconfig
>> @@ -132,4 +132,4 @@ config PCI_HYPERV
>>            PCI devices from a PCI backend to support PCI driver domains.
>>  
>>  source "drivers/pci/hotplug/Kconfig"
>> -source "drivers/pci/host/Kconfig"
>> +source "drivers/pci/controller/Kconfig"
>> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
>> index 8db5079..94bf91d 100644
>> --- a/drivers/pci/Makefile
>> +++ b/drivers/pci/Makefile
>> @@ -67,4 +67,4 @@ obj-$(CONFIG_OF) += of.o
>>  ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
>>  
>>  # PCI host controller drivers
>> -obj-y += host/
>> +obj-y += controller/
>> diff --git a/drivers/pci/host/Kconfig b/drivers/pci/controller/Kconfig
>> similarity index 100%
>> rename from drivers/pci/host/Kconfig
>> rename to drivers/pci/controller/Kconfig
>> diff --git a/drivers/pci/host/Makefile b/drivers/pci/controller/Makefile
>> similarity index 100%
>> rename from drivers/pci/host/Makefile
>> rename to drivers/pci/controller/Makefile
>> diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-aardvark.c
>> rename to drivers/pci/controller/pci-aardvark.c
>> diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/controller/pci-dra7xx.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-dra7xx.c
>> rename to drivers/pci/controller/pci-dra7xx.c
>> diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/controller/pci-exynos.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-exynos.c
>> rename to drivers/pci/controller/pci-exynos.c
>> diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-host-common.c
>> rename to drivers/pci/controller/pci-host-common.c
>> diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-host-generic.c
>> rename to drivers/pci/controller/pci-host-generic.c
>> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-hyperv.c
>> rename to drivers/pci/controller/pci-hyperv.c
>> diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/controller/pci-imx6.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-imx6.c
>> rename to drivers/pci/controller/pci-imx6.c
>> diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/controller/pci-keystone-dw.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone-dw.c
>> rename to drivers/pci/controller/pci-keystone-dw.c
>> diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/controller/pci-keystone.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone.c
>> rename to drivers/pci/controller/pci-keystone.c
>> diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/controller/pci-keystone.h
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone.h
>> rename to drivers/pci/controller/pci-keystone.h
>> diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/controller/pci-layerscape.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-layerscape.c
>> rename to drivers/pci/controller/pci-layerscape.c
>> diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-mvebu.c
>> rename to drivers/pci/controller/pci-mvebu.c
>> diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-rcar-gen2.c
>> rename to drivers/pci/controller/pci-rcar-gen2.c
>> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-tegra.c
>> rename to drivers/pci/controller/pci-tegra.c
>> diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-thunder-ecam.c
>> rename to drivers/pci/controller/pci-thunder-ecam.c
>> diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-thunder-pem.c
>> rename to drivers/pci/controller/pci-thunder-pem.c
>> diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-versatile.c
>> rename to drivers/pci/controller/pci-versatile.c
>> diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-xgene-msi.c
>> rename to drivers/pci/controller/pci-xgene-msi.c
>> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-xgene.c
>> rename to drivers/pci/controller/pci-xgene.c
>> diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-altera-msi.c
>> rename to drivers/pci/controller/pcie-altera-msi.c
>> diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-altera.c
>> rename to drivers/pci/controller/pcie-altera.c
>> diff --git a/drivers/pci/host/pcie-armada8k.c b/drivers/pci/controller/pcie-armada8k.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-armada8k.c
>> rename to drivers/pci/controller/pcie-armada8k.c
>> diff --git a/drivers/pci/host/pcie-artpec6.c b/drivers/pci/controller/pcie-artpec6.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-artpec6.c
>> rename to drivers/pci/controller/pcie-artpec6.c
>> diff --git a/drivers/pci/host/pcie-designware-plat.c b/drivers/pci/controller/pcie-designware-plat.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware-plat.c
>> rename to drivers/pci/controller/pcie-designware-plat.c
>> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/controller/pcie-designware.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware.c
>> rename to drivers/pci/controller/pcie-designware.c
>> diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/controller/pcie-designware.h
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware.h
>> rename to drivers/pci/controller/pcie-designware.h
>> diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/controller/pcie-hisi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-hisi.c
>> rename to drivers/pci/controller/pcie-hisi.c
>> diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-bcma.c
>> rename to drivers/pci/controller/pcie-iproc-bcma.c
>> diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-msi.c
>> rename to drivers/pci/controller/pcie-iproc-msi.c
>> diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-platform.c
>> rename to drivers/pci/controller/pcie-iproc-platform.c
>> diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc.c
>> rename to drivers/pci/controller/pcie-iproc.c
>> diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/controller/pcie-iproc.h
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc.h
>> rename to drivers/pci/controller/pcie-iproc.h
>> diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/controller/pcie-qcom.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-qcom.c
>> rename to drivers/pci/controller/pcie-qcom.c
>> diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-rcar.c
>> rename to drivers/pci/controller/pcie-rcar.c
>> diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-rockchip.c
>> rename to drivers/pci/controller/pcie-rockchip.c
>> diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/controller/pcie-spear13xx.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-spear13xx.c
>> rename to drivers/pci/controller/pcie-spear13xx.c
>> diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-xilinx-nwl.c
>> rename to drivers/pci/controller/pcie-xilinx-nwl.c
>> diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-xilinx.c
>> rename to drivers/pci/controller/pcie-xilinx.c
>> diff --git a/drivers/pci/host/vmd.c b/drivers/pci/controller/vmd.c
>> similarity index 100%
>> rename from drivers/pci/host/vmd.c
>> rename to drivers/pci/controller/vmd.c
>> -- 
>> 1.7.9.5
>>
> ---end quoted text---
> 
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Joao Pinto Dec. 28, 2016, 1:57 p.m. UTC | #3

Hello,

Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>> Hi Bjorn,
>>
>> As discussed during our LPC discussions, I'm posting the rename patch
>> here. I'll post the rest of EP series before the next merge window.
>>
>> There might be hiccups because of this renaming but feel this is
>> necessary for long-term maintenance.
> 
> if we do this rename it would be great to get it to Linus NOW after
> -rc1 as that minimizes the impact on the 4.11 merge window.

Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
also. Wouldn't be better to name it rc_controller?

> 
>>
>> Thanks
>> Kishon
>>
>>  MAINTAINERS                                        |   52 ++++++++++----------
>>  drivers/pci/Kconfig                                |    2 +-
>>  drivers/pci/Makefile                               |    2 +-
>>  drivers/pci/{host => controller}/Kconfig           |    0
>>  drivers/pci/{host => controller}/Makefile          |    0
>>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
>>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
>>  drivers/pci/{host => controller}/pci-exynos.c      |    0
>>  drivers/pci/{host => controller}/pci-host-common.c |    0
>>  .../pci/{host => controller}/pci-host-generic.c    |    0
>>  drivers/pci/{host => controller}/pci-hyperv.c      |    0
>>  drivers/pci/{host => controller}/pci-imx6.c        |    0
>>  drivers/pci/{host => controller}/pci-keystone-dw.c |    0
>>  drivers/pci/{host => controller}/pci-keystone.c    |    0
>>  drivers/pci/{host => controller}/pci-keystone.h    |    0
>>  drivers/pci/{host => controller}/pci-layerscape.c  |    0
>>  drivers/pci/{host => controller}/pci-mvebu.c       |    0
>>  drivers/pci/{host => controller}/pci-rcar-gen2.c   |    0
>>  drivers/pci/{host => controller}/pci-tegra.c       |    0
>>  .../pci/{host => controller}/pci-thunder-ecam.c    |    0
>>  drivers/pci/{host => controller}/pci-thunder-pem.c |    0
>>  drivers/pci/{host => controller}/pci-versatile.c   |    0
>>  drivers/pci/{host => controller}/pci-xgene-msi.c   |    0
>>  drivers/pci/{host => controller}/pci-xgene.c       |    0
>>  drivers/pci/{host => controller}/pcie-altera-msi.c |    0
>>  drivers/pci/{host => controller}/pcie-altera.c     |    0
>>  drivers/pci/{host => controller}/pcie-armada8k.c   |    0
>>  drivers/pci/{host => controller}/pcie-artpec6.c    |    0
>>  .../{host => controller}/pcie-designware-plat.c    |    0
>>  drivers/pci/{host => controller}/pcie-designware.c |    0
>>  drivers/pci/{host => controller}/pcie-designware.h |    0
>>  drivers/pci/{host => controller}/pcie-hisi.c       |    0
>>  drivers/pci/{host => controller}/pcie-iproc-bcma.c |    0
>>  drivers/pci/{host => controller}/pcie-iproc-msi.c  |    0
>>  .../pci/{host => controller}/pcie-iproc-platform.c |    0
>>  drivers/pci/{host => controller}/pcie-iproc.c      |    0
>>  drivers/pci/{host => controller}/pcie-iproc.h      |    0
>>  drivers/pci/{host => controller}/pcie-qcom.c       |    0
>>  drivers/pci/{host => controller}/pcie-rcar.c       |    0
>>  drivers/pci/{host => controller}/pcie-rockchip.c   |    0
>>  drivers/pci/{host => controller}/pcie-spear13xx.c  |    0
>>  drivers/pci/{host => controller}/pcie-xilinx-nwl.c |    0
>>  drivers/pci/{host => controller}/pcie-xilinx.c     |    0
>>  drivers/pci/{host => controller}/vmd.c             |    0
>>  44 files changed, 28 insertions(+), 28 deletions(-)
>>  rename drivers/pci/{host => controller}/Kconfig (100%)
>>  rename drivers/pci/{host => controller}/Makefile (100%)
>>  rename drivers/pci/{host => controller}/pci-aardvark.c (100%)
>>  rename drivers/pci/{host => controller}/pci-dra7xx.c (100%)
>>  rename drivers/pci/{host => controller}/pci-exynos.c (100%)
>>  rename drivers/pci/{host => controller}/pci-host-common.c (100%)
>>  rename drivers/pci/{host => controller}/pci-host-generic.c (100%)
>>  rename drivers/pci/{host => controller}/pci-hyperv.c (100%)
>>  rename drivers/pci/{host => controller}/pci-imx6.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone-dw.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone.c (100%)
>>  rename drivers/pci/{host => controller}/pci-keystone.h (100%)
>>  rename drivers/pci/{host => controller}/pci-layerscape.c (100%)
>>  rename drivers/pci/{host => controller}/pci-mvebu.c (100%)
>>  rename drivers/pci/{host => controller}/pci-rcar-gen2.c (100%)
>>  rename drivers/pci/{host => controller}/pci-tegra.c (100%)
>>  rename drivers/pci/{host => controller}/pci-thunder-ecam.c (100%)
>>  rename drivers/pci/{host => controller}/pci-thunder-pem.c (100%)
>>  rename drivers/pci/{host => controller}/pci-versatile.c (100%)
>>  rename drivers/pci/{host => controller}/pci-xgene-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pci-xgene.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-altera-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-altera.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-armada8k.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-artpec6.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware-plat.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-designware.h (100%)
>>  rename drivers/pci/{host => controller}/pcie-hisi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-bcma.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-msi.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc-platform.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-iproc.h (100%)
>>  rename drivers/pci/{host => controller}/pcie-qcom.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-rcar.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-rockchip.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-spear13xx.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-xilinx-nwl.c (100%)
>>  rename drivers/pci/{host => controller}/pcie-xilinx.c (100%)
>>  rename drivers/pci/{host => controller}/vmd.c (100%)
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index cfff2c9..2ac7a4b 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -5969,7 +5969,7 @@ F:	arch/x86/kernel/cpu/mshyperv.c
>>  F:	drivers/hid/hid-hyperv.c
>>  F:	drivers/hv/
>>  F:	drivers/input/serio/hyperv-keyboard.c
>> -F:	drivers/pci/host/pci-hyperv.c
>> +F:	drivers/pci/controller/pci-hyperv.c
>>  F:	drivers/net/hyperv/
>>  F:	drivers/scsi/storvsc_drv.c
>>  F:	drivers/uio/uio_hv_generic.c
>> @@ -9413,7 +9413,7 @@ L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/altera-pcie.txt
>> -F:	drivers/pci/host/pcie-altera.c
>> +F:	drivers/pci/controller/pcie-altera.c
>>  
>>  PCI DRIVER FOR ARM VERSATILE PLATFORM
>>  M:	Rob Herring <[e-mail]>
>> @@ -9421,7 +9421,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/versatile.txt
>> -F:	drivers/pci/host/pci-versatile.c
>> +F:	drivers/pci/controller/pci-versatile.c
>>  
>>  PCI DRIVER FOR ARMADA 8K
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9429,7 +9429,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
>> -F:	drivers/pci/host/pcie-armada8k.c
>> +F:	drivers/pci/controller/pcie-armada8k.c
>>  
>>  PCI DRIVER FOR APPLIEDMICRO XGENE
>>  M:	Tanmay Inamdar <[e-mail]>
>> @@ -9437,7 +9437,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/xgene-pci.txt
>> -F:	drivers/pci/host/pci-xgene.c
>> +F:	drivers/pci/controller/pci-xgene.c
>>  
>>  PCI DRIVER FOR FREESCALE LAYERSCAPE
>>  M:	Minghuan Lian <[e-mail]>
>> @@ -9447,7 +9447,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*layerscape*
>> +F:	drivers/pci/controller/*layerscape*
>>  
>>  PCI DRIVER FOR IMX6
>>  M:	Richard Zhu <[e-mail]>
>> @@ -9456,14 +9456,14 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
>> -F:	drivers/pci/host/*imx6*
>> +F:	drivers/pci/controller/*imx6*
>>  
>>  PCI DRIVER FOR TI KEYSTONE
>>  M:	Murali Karicheri <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/*keystone*
>> +F:	drivers/pci/controller/*keystone*
>>  
>>  PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9471,7 +9471,7 @@ M:	Jason Cooper <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/*mvebu*
>> +F:	drivers/pci/controller/*mvebu*
>>  
>>  PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
>>  M:	Thomas Petazzoni <[e-mail]>
>> @@ -9479,7 +9479,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
>> -F:	drivers/pci/host/pci-aardvark.c
>> +F:	drivers/pci/controller/pci-aardvark.c
>>  
>>  PCI DRIVER FOR NVIDIA TEGRA
>>  M:	Thierry Reding <[e-mail]>
>> @@ -9487,7 +9487,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
>> -F:	drivers/pci/host/pci-tegra.c
>> +F:	drivers/pci/controller/pci-tegra.c
>>  
>>  PCI DRIVER FOR TI DRA7XX
>>  M:	Kishon Vijay Abraham I <[e-mail]>
>> @@ -9495,14 +9495,14 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/ti-pci.txt
>> -F:	drivers/pci/host/pci-dra7xx.c
>> +F:	drivers/pci/controller/pci-dra7xx.c
>>  
>>  PCI DRIVER FOR RENESAS R-CAR
>>  M:	Simon Horman <[e-mail]>
>>  L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*rcar*
>> +F:	drivers/pci/controller/*rcar*
>>  
>>  PCI DRIVER FOR SAMSUNG EXYNOS
>>  M:	Jingoo Han <[e-mail]>
>> @@ -9510,7 +9510,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>> -F:	drivers/pci/host/pci-exynos.c
>> +F:	drivers/pci/controller/pci-exynos.c
>>  
>>  PCI DRIVER FOR SYNOPSIS DESIGNWARE
>>  M:	Jingoo Han <[e-mail]>
>> @@ -9518,7 +9518,7 @@ M:	Joao Pinto <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/designware-pcie.txt
>> -F:	drivers/pci/host/*designware*
>> +F:	drivers/pci/controller/*designware*
>>  
>>  PCI DRIVER FOR GENERIC OF HOSTS
>>  M:	Will Deacon <[e-mail]>
>> @@ -9526,20 +9526,20 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/host-generic-pci.txt
>> -F:	drivers/pci/host/pci-host-common.c
>> -F:	drivers/pci/host/pci-host-generic.c
>> +F:	drivers/pci/controller/pci-host-common.c
>> +F:	drivers/pci/controller/pci-host-generic.c
>>  
>>  PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
>>  M:	Keith Busch <[e-mail]>
>>  L:	[e-mail]
>>  S:	Supported
>> -F:	drivers/pci/host/vmd.c
>> +F:	drivers/pci/controller/vmd.c
>>  
>>  PCIE DRIVER FOR ST SPEAR13XX
>>  M:	Pratyush Anand <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>> -F:	drivers/pci/host/*spear*
>> +F:	drivers/pci/controller/*spear*
>>  
>>  PCI MSI DRIVER FOR ALTERA MSI IP
>>  M:	Ley Foon Tan <[e-mail]>
>> @@ -9547,7 +9547,7 @@ L:	[e-mail] (moderated for non-subscribers)
>>  L:	[e-mail]
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
>> -F:	drivers/pci/host/pcie-altera-msi.c
>> +F:	drivers/pci/controller/pcie-altera-msi.c
>>  
>>  PCI MSI DRIVER FOR APPLIEDMICRO XGENE
>>  M:	Duc Dang <[e-mail]>
>> @@ -9555,7 +9555,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
>> -F:	drivers/pci/host/pci-xgene-msi.c
>> +F:	drivers/pci/controller/pci-xgene-msi.c
>>  
>>  PCIE DRIVER FOR AXIS ARTPEC
>>  M:	Niklas Cassel <[e-mail]>
>> @@ -9564,7 +9564,7 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/axis,artpec*
>> -F:	drivers/pci/host/*artpec*
>> +F:	drivers/pci/controller/*artpec*
>>  
>>  PCIE DRIVER FOR HISILICON
>>  M:	Zhou Wang <[e-mail]>
>> @@ -9572,7 +9572,7 @@ M:	Gabriele Paoloni <[e-mail]>
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
>> -F:	drivers/pci/host/pcie-hisi.c
>> +F:	drivers/pci/controller/pcie-hisi.c
>>  
>>  PCIE DRIVER FOR ROCKCHIP
>>  M:	Shawn Lin <[e-mail]>
>> @@ -9581,14 +9581,14 @@ L:	[e-mail]
>>  L:	[e-mail]
>>  S:	Maintained
>>  F:	Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> -F:	drivers/pci/host/pcie-rockchip.c
>> +F:	drivers/pci/controller/pcie-rockchip.c
>>  
>>  PCIE DRIVER FOR QUALCOMM MSM
>>  M:     Stanimir Varbanov <[e-mail]>
>>  L:     [e-mail]
>>  L:     [e-mail]
>>  S:     Maintained
>> -F:     drivers/pci/host/*qcom*
>> +F:     drivers/pci/controller/*qcom*
>>  
>>  PCIE DRIVER FOR CAVIUM THUNDERX
>>  M:	David Daney <[e-mail]>
>> @@ -9596,7 +9596,7 @@ L:	[e-mail]
>>  L:	[e-mail] (moderated for non-subscribers)
>>  S:	Supported
>>  F:	Documentation/devicetree/bindings/pci/pci-thunder-*
>> -F:	drivers/pci/host/pci-thunder-*
>> +F:	drivers/pci/controller/pci-thunder-*
>>  
>>  PCMCIA SUBSYSTEM
>>  P:	Linux PCMCIA Team
>> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
>> index 6555eb7..fa56abd 100644
>> --- a/drivers/pci/Kconfig
>> +++ b/drivers/pci/Kconfig
>> @@ -132,4 +132,4 @@ config PCI_HYPERV
>>            PCI devices from a PCI backend to support PCI driver domains.
>>  
>>  source "drivers/pci/hotplug/Kconfig"
>> -source "drivers/pci/host/Kconfig"
>> +source "drivers/pci/controller/Kconfig"
>> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
>> index 8db5079..94bf91d 100644
>> --- a/drivers/pci/Makefile
>> +++ b/drivers/pci/Makefile
>> @@ -67,4 +67,4 @@ obj-$(CONFIG_OF) += of.o
>>  ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
>>  
>>  # PCI host controller drivers
>> -obj-y += host/
>> +obj-y += controller/
>> diff --git a/drivers/pci/host/Kconfig b/drivers/pci/controller/Kconfig
>> similarity index 100%
>> rename from drivers/pci/host/Kconfig
>> rename to drivers/pci/controller/Kconfig
>> diff --git a/drivers/pci/host/Makefile b/drivers/pci/controller/Makefile
>> similarity index 100%
>> rename from drivers/pci/host/Makefile
>> rename to drivers/pci/controller/Makefile
>> diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-aardvark.c
>> rename to drivers/pci/controller/pci-aardvark.c
>> diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/controller/pci-dra7xx.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-dra7xx.c
>> rename to drivers/pci/controller/pci-dra7xx.c
>> diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/controller/pci-exynos.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-exynos.c
>> rename to drivers/pci/controller/pci-exynos.c
>> diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-host-common.c
>> rename to drivers/pci/controller/pci-host-common.c
>> diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-host-generic.c
>> rename to drivers/pci/controller/pci-host-generic.c
>> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-hyperv.c
>> rename to drivers/pci/controller/pci-hyperv.c
>> diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/controller/pci-imx6.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-imx6.c
>> rename to drivers/pci/controller/pci-imx6.c
>> diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/controller/pci-keystone-dw.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone-dw.c
>> rename to drivers/pci/controller/pci-keystone-dw.c
>> diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/controller/pci-keystone.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone.c
>> rename to drivers/pci/controller/pci-keystone.c
>> diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/controller/pci-keystone.h
>> similarity index 100%
>> rename from drivers/pci/host/pci-keystone.h
>> rename to drivers/pci/controller/pci-keystone.h
>> diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/controller/pci-layerscape.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-layerscape.c
>> rename to drivers/pci/controller/pci-layerscape.c
>> diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-mvebu.c
>> rename to drivers/pci/controller/pci-mvebu.c
>> diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-rcar-gen2.c
>> rename to drivers/pci/controller/pci-rcar-gen2.c
>> diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-tegra.c
>> rename to drivers/pci/controller/pci-tegra.c
>> diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-thunder-ecam.c
>> rename to drivers/pci/controller/pci-thunder-ecam.c
>> diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-thunder-pem.c
>> rename to drivers/pci/controller/pci-thunder-pem.c
>> diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-versatile.c
>> rename to drivers/pci/controller/pci-versatile.c
>> diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-xgene-msi.c
>> rename to drivers/pci/controller/pci-xgene-msi.c
>> diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
>> similarity index 100%
>> rename from drivers/pci/host/pci-xgene.c
>> rename to drivers/pci/controller/pci-xgene.c
>> diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-altera-msi.c
>> rename to drivers/pci/controller/pcie-altera-msi.c
>> diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-altera.c
>> rename to drivers/pci/controller/pcie-altera.c
>> diff --git a/drivers/pci/host/pcie-armada8k.c b/drivers/pci/controller/pcie-armada8k.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-armada8k.c
>> rename to drivers/pci/controller/pcie-armada8k.c
>> diff --git a/drivers/pci/host/pcie-artpec6.c b/drivers/pci/controller/pcie-artpec6.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-artpec6.c
>> rename to drivers/pci/controller/pcie-artpec6.c
>> diff --git a/drivers/pci/host/pcie-designware-plat.c b/drivers/pci/controller/pcie-designware-plat.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware-plat.c
>> rename to drivers/pci/controller/pcie-designware-plat.c
>> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/controller/pcie-designware.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware.c
>> rename to drivers/pci/controller/pcie-designware.c
>> diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/controller/pcie-designware.h
>> similarity index 100%
>> rename from drivers/pci/host/pcie-designware.h
>> rename to drivers/pci/controller/pcie-designware.h
>> diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/controller/pcie-hisi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-hisi.c
>> rename to drivers/pci/controller/pcie-hisi.c
>> diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-bcma.c
>> rename to drivers/pci/controller/pcie-iproc-bcma.c
>> diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-msi.c
>> rename to drivers/pci/controller/pcie-iproc-msi.c
>> diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc-platform.c
>> rename to drivers/pci/controller/pcie-iproc-platform.c
>> diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc.c
>> rename to drivers/pci/controller/pcie-iproc.c
>> diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/controller/pcie-iproc.h
>> similarity index 100%
>> rename from drivers/pci/host/pcie-iproc.h
>> rename to drivers/pci/controller/pcie-iproc.h
>> diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/controller/pcie-qcom.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-qcom.c
>> rename to drivers/pci/controller/pcie-qcom.c
>> diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-rcar.c
>> rename to drivers/pci/controller/pcie-rcar.c
>> diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-rockchip.c
>> rename to drivers/pci/controller/pcie-rockchip.c
>> diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/controller/pcie-spear13xx.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-spear13xx.c
>> rename to drivers/pci/controller/pcie-spear13xx.c
>> diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-xilinx-nwl.c
>> rename to drivers/pci/controller/pcie-xilinx-nwl.c
>> diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
>> similarity index 100%
>> rename from drivers/pci/host/pcie-xilinx.c
>> rename to drivers/pci/controller/pcie-xilinx.c
>> diff --git a/drivers/pci/host/vmd.c b/drivers/pci/controller/vmd.c
>> similarity index 100%
>> rename from drivers/pci/host/vmd.c
>> rename to drivers/pci/controller/vmd.c
>> -- 
>> 1.7.9.5
>>
> ---end quoted text---
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Bjorn Helgaas Dec. 28, 2016, 4:41 p.m. UTC | #4

On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
> > On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
> >> As discussed during our LPC discussions, I'm posting the rename patch
> >> here. I'll post the rest of EP series before the next merge window.
> >>
> >> There might be hiccups because of this renaming but feel this is
> >> necessary for long-term maintenance.
> > 
> > if we do this rename it would be great to get it to Linus NOW after
> > -rc1 as that minimizes the impact on the 4.11 merge window.
> 
> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
> also. Wouldn't be better to name it rc_controller?

I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
neutral name that can cover both RC and Endpoint.

I'm not a huge fan of "controller" because it feels a little bit long
and while I suppose it technically does include the concept of the PCI
interface of an endpoint, it still suggests more of the host side to
me.

Doesn't USB have a similar situation?  I see there's a
drivers/usb/host/ (probably where we copied from in the first place).
Is a USB gadget the USB analog of what you're doing?  How do they
share code between the master/slave sides?

There's a drivers/ntb/hw/.  I don't know if "hw" is the *best* name,
but it's short and it at least conveys the idea that this code is
hardware-specific, not generic.

> >>  drivers/pci/{host => controller}/Kconfig           |    0
> >>  drivers/pci/{host => controller}/Makefile          |    0
> >>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
> >>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
> >> ...
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Joao Pinto Dec. 28, 2016, 5:17 p.m. UTC | #5

Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>> here. I'll post the rest of EP series before the next merge window.
>>>>
>>>> There might be hiccups because of this renaming but feel this is
>>>> necessary for long-term maintenance.
>>>
>>> if we do this rename it would be great to get it to Linus NOW after
>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>
>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>> also. Wouldn't be better to name it rc_controller?
> 
> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
> neutral name that can cover both RC and Endpoint.
> 
> I'm not a huge fan of "controller" because it feels a little bit long
> and while I suppose it technically does include the concept of the PCI
> interface of an endpoint, it still suggests more of the host side to
> me.
> 
> Doesn't USB have a similar situation?  I see there's a
> drivers/usb/host/ (probably where we copied from in the first place).
> Is a USB gadget the USB analog of what you're doing?  How do they
> share code between the master/slave sides?
> 

The usb/host contains the implemnentations by the spec of the several
*hci (USB Host) and then you can have for example the USB 3.0 Designware
Host specific ops in dwc3 and for USB 2.0 in dwc2/.
For device purposes it uses the core/ and then some of the device functions
are extended from the gadget/ package in which you can use mass_storage and
other types of functions.

In our case in PCI we have the core functions inside /drivers/pci and the host
mangled inside host. I suggest:

drivers/pci
 drivers/pci/core/
 drivers/pci/core/hotplug
 drivers/pci/core/pcie
 drivers/pci/core/<all other files inside pci/ today>
 drivers/pci/host
 drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
 drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
 drivers/pci/endpoint -> common code
 drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
 drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops

Joao

> There's a drivers/ntb/hw/.  I don't know if "hw" is the *best* name,
> but it's short and it at least conveys the idea that this code is
> hardware-specific, not generic.
> 
>>>>  drivers/pci/{host => controller}/Kconfig           |    0
>>>>  drivers/pci/{host => controller}/Makefile          |    0
>>>>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
>>>>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
>>>> ...

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Joao Pinto Dec. 28, 2016, 5:20 p.m. UTC | #6

Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>
>>>>> There might be hiccups because of this renaming but feel this is
>>>>> necessary for long-term maintenance.
>>>>
>>>> if we do this rename it would be great to get it to Linus NOW after
>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>
>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>> also. Wouldn't be better to name it rc_controller?
>>
>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>> neutral name that can cover both RC and Endpoint.
>>
>> I'm not a huge fan of "controller" because it feels a little bit long
>> and while I suppose it technically does include the concept of the PCI
>> interface of an endpoint, it still suggests more of the host side to
>> me.
>>
>> Doesn't USB have a similar situation?  I see there's a
>> drivers/usb/host/ (probably where we copied from in the first place).
>> Is a USB gadget the USB analog of what you're doing?  How do they
>> share code between the master/slave sides?
>>
> 
> The usb/host contains the implemnentations by the spec of the several
> *hci (USB Host) and then you can have for example the USB 3.0 Designware
> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
> For device purposes it uses the core/ and then some of the device functions
> are extended from the gadget/ package in which you can use mass_storage and
> other types of functions.
> 
> In our case in PCI we have the core functions inside /drivers/pci and the host
> mangled inside host. I suggest:
> 
> drivers/pci
>  drivers/pci/core/
>  drivers/pci/core/hotplug
>  drivers/pci/core/pcie
>  drivers/pci/core/<all other files inside pci/ today>
>  drivers/pci/host
>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers

Correction:
drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
drivers

>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller

Correction:
drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller

>  drivers/pci/endpoint -> common code
>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
> 

Thanks

> Joao
> 
>> There's a drivers/ntb/hw/.  I don't know if "hw" is the *best* name,
>> but it's short and it at least conveys the idea that this code is
>> hardware-specific, not generic.
>>
>>>>>  drivers/pci/{host => controller}/Kconfig           |    0
>>>>>  drivers/pci/{host => controller}/Makefile          |    0
>>>>>  drivers/pci/{host => controller}/pci-aardvark.c    |    0
>>>>>  drivers/pci/{host => controller}/pci-dra7xx.c      |    0
>>>>> ...
> 

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Kishon Vijay Abraham I Dec. 29, 2016, 5:46 a.m. UTC | #7

Hi,

On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>
>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>> necessary for long-term maintenance.
>>>>>
>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>
>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>> also. Wouldn't be better to name it rc_controller?
>>>
>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>> neutral name that can cover both RC and Endpoint.

right.
>>>
>>> I'm not a huge fan of "controller" because it feels a little bit long
>>> and while I suppose it technically does include the concept of the PCI
>>> interface of an endpoint, it still suggests more of the host side to
>>> me.
>>>
>>> Doesn't USB have a similar situation?  I see there's a
>>> drivers/usb/host/ (probably where we copied from in the first place).
>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>> share code between the master/slave sides?
>>>
>>
>> The usb/host contains the implemnentations by the spec of the several
>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.

right, each IP have a separate directory in USB. I thought of doing something
similar for PCI but decided against it since that would involve identifying all
the PCI IPs used and eventually result in more directories.
>> For device purposes it uses the core/ and then some of the device functions
>> are extended from the gadget/ package in which you can use mass_storage and
>> other types of functions.

That would be similar for PCI endpoint. All endpoint specific core
functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>
>> In our case in PCI we have the core functions inside /drivers/pci and the host
>> mangled inside host. I suggest:
>>
>> drivers/pci
>>  drivers/pci/core/
>>  drivers/pci/core/hotplug
>>  drivers/pci/core/pcie
>>  drivers/pci/core/<all other files inside pci/ today>
>>  drivers/pci/host
>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
> 
> Correction:
> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
> drivers
> 
>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
> 
> Correction:
> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
> 
>>  drivers/pci/endpoint -> common code
>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops

There are some parts of the dwc driver that is common to both root complex and
endpoint. Where should that be? I'm sure no one wants to duplicate the common
piece in both root complex and endpoint.

[1] -> https://lkml.org/lkml/2016/9/14/27

Thanks
Kishon
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Joao Pinto Dec. 29, 2016, 10:38 a.m. UTC | #8

Hi,

Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
> Hi,
> 
> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>
>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>> necessary for long-term maintenance.
>>>>>>
>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>
>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>> also. Wouldn't be better to name it rc_controller?
>>>>
>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>> neutral name that can cover both RC and Endpoint.
> 
> right.
>>>>
>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>> and while I suppose it technically does include the concept of the PCI
>>>> interface of an endpoint, it still suggests more of the host side to
>>>> me.
>>>>
>>>> Doesn't USB have a similar situation?  I see there's a
>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>> share code between the master/slave sides?
>>>>
>>>
>>> The usb/host contains the implemnentations by the spec of the several
>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
> 
> right, each IP have a separate directory in USB. I thought of doing something
> similar for PCI but decided against it since that would involve identifying all
> the PCI IPs used and eventually result in more directories.
>>> For device purposes it uses the core/ and then some of the device functions
>>> are extended from the gadget/ package in which you can use mass_storage and
>>> other types of functions.
> 
> That would be similar for PCI endpoint. All endpoint specific core
> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>
>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>> mangled inside host. I suggest:
>>>
>>> drivers/pci
>>>  drivers/pci/core/
>>>  drivers/pci/core/hotplug
>>>  drivers/pci/core/pcie
>>>  drivers/pci/core/<all other files inside pci/ today>
>>>  drivers/pci/host
>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>
>> Correction:
>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>> drivers
>>
>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>
>> Correction:
>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>
>>>  drivers/pci/endpoint -> common code
>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
> 
> There are some parts of the dwc driver that is common to both root complex and
> endpoint. Where should that be? I'm sure no one wants to duplicate the common
> piece in both root complex and endpoint.

You are right, the config space is almost the same and some ops also common.
I would suggest:

drivers/pci
  drivers/pci/core/
    drivers/pci/core/hotplug
    drivers/pci/core/pcie
    drivers/pci/core/<all other files inside pci/ today>
  drivers/pci/dwc
    drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
    drivers/pci/dwc/host/
    drivers/pci/dwc/endpoint/

What do you think?

Thanks.

> 
> [1] -> https://urldefense.proofpoint.com/v2/url?u=https-3A__lkml.org_lkml_2016_9_14_27&d=DgID-g&c=DPL6_X_6JkXFx7AXWqB0tg&r=s2fO0hii0OGNOv9qQy_HRXy-xAJUD1NNoEcc3io_kx0&m=E9ExIpzr6vIxD1dZDQcUzR5Y-MLqjT1aO_A96qhd_Dk&s=9vvw2jAdXsYlzu0KriDWnmdHa3H_GPFP5Ti2dbM865A&e= 
> 
> Thanks
> Kishon
> 

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Kishon Vijay Abraham I Dec. 29, 2016, 11:48 a.m. UTC | #9

Hi,

On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
> 
> Hi,
> 
> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>> Hi,
>>
>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>
>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>> necessary for long-term maintenance.
>>>>>>>
>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>
>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>
>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>> neutral name that can cover both RC and Endpoint.
>>
>> right.
>>>>>
>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>> and while I suppose it technically does include the concept of the PCI
>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>> me.
>>>>>
>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>> share code between the master/slave sides?
>>>>>
>>>>
>>>> The usb/host contains the implemnentations by the spec of the several
>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>
>> right, each IP have a separate directory in USB. I thought of doing something
>> similar for PCI but decided against it since that would involve identifying all
>> the PCI IPs used and eventually result in more directories.
>>>> For device purposes it uses the core/ and then some of the device functions
>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>> other types of functions.
>>
>> That would be similar for PCI endpoint. All endpoint specific core
>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>
>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>> mangled inside host. I suggest:
>>>>
>>>> drivers/pci
>>>>  drivers/pci/core/
>>>>  drivers/pci/core/hotplug
>>>>  drivers/pci/core/pcie
>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>  drivers/pci/host
>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>
>>> Correction:
>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>> drivers
>>>
>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>
>>> Correction:
>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>
>>>>  drivers/pci/endpoint -> common code
>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>
>> There are some parts of the dwc driver that is common to both root complex and
>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>> piece in both root complex and endpoint.
> 
> You are right, the config space is almost the same and some ops also common.
> I would suggest:
> 
> drivers/pci
>   drivers/pci/core/
>     drivers/pci/core/hotplug
>     drivers/pci/core/pcie
>     drivers/pci/core/<all other files inside pci/ today>
>   drivers/pci/dwc
>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>     drivers/pci/dwc/host/
>     drivers/pci/dwc/endpoint/
> 
> What do you think?

I don't think we should have sub-directories within dwc (USB too doesn't have
sub-directories). Where should the platform specific driver be kept? For
example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
changes are so minimal that splitting the file won't make much sense.

And such a change would also mean we create a separate directory for every
other driver present right now in pci/host.

Thanks
Kishon
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Joao Pinto Dec. 29, 2016, 11:53 a.m. UTC | #10

Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
> Hi,
> 
> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>
>> Hi,
>>
>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>> Hi,
>>>
>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>
>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>
>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>
>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>
>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>> neutral name that can cover both RC and Endpoint.
>>>
>>> right.
>>>>>>
>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>> me.
>>>>>>
>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>> share code between the master/slave sides?
>>>>>>
>>>>>
>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>
>>> right, each IP have a separate directory in USB. I thought of doing something
>>> similar for PCI but decided against it since that would involve identifying all
>>> the PCI IPs used and eventually result in more directories.
>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>> other types of functions.
>>>
>>> That would be similar for PCI endpoint. All endpoint specific core
>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>
>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>> mangled inside host. I suggest:
>>>>>
>>>>> drivers/pci
>>>>>  drivers/pci/core/
>>>>>  drivers/pci/core/hotplug
>>>>>  drivers/pci/core/pcie
>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>  drivers/pci/host
>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>
>>>> Correction:
>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>> drivers
>>>>
>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>
>>>> Correction:
>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>
>>>>>  drivers/pci/endpoint -> common code
>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>
>>> There are some parts of the dwc driver that is common to both root complex and
>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>> piece in both root complex and endpoint.
>>
>> You are right, the config space is almost the same and some ops also common.
>> I would suggest:
>>
>> drivers/pci
>>   drivers/pci/core/
>>     drivers/pci/core/hotplug
>>     drivers/pci/core/pcie
>>     drivers/pci/core/<all other files inside pci/ today>
>>   drivers/pci/dwc
>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>     drivers/pci/dwc/host/
>>     drivers/pci/dwc/endpoint/
>>
>> What do you think?
> 
> I don't think we should have sub-directories within dwc (USB too doesn't have
> sub-directories). Where should the platform specific driver be kept? For
> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
> changes are so minimal that splitting the file won't make much sense.
> 
> And such a change would also mean we create a separate directory for every
> other driver present right now in pci/host.

I understand you idea. We can simplify it this way:

 drivers/pci
   drivers/pci/core/
     drivers/pci/core/hotplug
     drivers/pci/core/pcie
     drivers/pci/core/<all other files inside pci/ today>
     drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
and EP

BTW dwc states for DesigWare Controller.

What do you think?

Thanks

> 
> Thanks
> Kishon
> 

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Kishon Vijay Abraham I Dec. 29, 2016, 11:58 a.m. UTC | #11

Hi,

On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>> Hi,
>>
>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>
>>> Hi,
>>>
>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>> Hi,
>>>>
>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>
>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>
>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>
>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>
>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>
>>>> right.
>>>>>>>
>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>> me.
>>>>>>>
>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>> share code between the master/slave sides?
>>>>>>>
>>>>>>
>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>
>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>> similar for PCI but decided against it since that would involve identifying all
>>>> the PCI IPs used and eventually result in more directories.
>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>> other types of functions.
>>>>
>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>
>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>> mangled inside host. I suggest:
>>>>>>
>>>>>> drivers/pci
>>>>>>  drivers/pci/core/
>>>>>>  drivers/pci/core/hotplug
>>>>>>  drivers/pci/core/pcie
>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>  drivers/pci/host
>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>
>>>>> Correction:
>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>> drivers
>>>>>
>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>
>>>>> Correction:
>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>
>>>>>>  drivers/pci/endpoint -> common code
>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>
>>>> There are some parts of the dwc driver that is common to both root complex and
>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>> piece in both root complex and endpoint.
>>>
>>> You are right, the config space is almost the same and some ops also common.
>>> I would suggest:
>>>
>>> drivers/pci
>>>   drivers/pci/core/
>>>     drivers/pci/core/hotplug
>>>     drivers/pci/core/pcie
>>>     drivers/pci/core/<all other files inside pci/ today>
>>>   drivers/pci/dwc
>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>     drivers/pci/dwc/host/
>>>     drivers/pci/dwc/endpoint/
>>>
>>> What do you think?
>>
>> I don't think we should have sub-directories within dwc (USB too doesn't have
>> sub-directories). Where should the platform specific driver be kept? For
>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>> changes are so minimal that splitting the file won't make much sense.
>>
>> And such a change would also mean we create a separate directory for every
>> other driver present right now in pci/host.
> 
> I understand you idea. We can simplify it this way:
> 
>  drivers/pci
>    drivers/pci/core/
>      drivers/pci/core/hotplug
>      drivers/pci/core/pcie
>      drivers/pci/core/<all other files inside pci/ today>
>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
> and EP
> 
> BTW dwc states for DesigWare Controller.
> 
> What do you think?

I'd like to avoid using different directory structures for different IPs. Lets
try to make it uniform.

Thanks
Kishon
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Joao Pinto Dec. 29, 2016, 12:08 p.m. UTC | #12

Às 11:58 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
> Hi,
> 
> On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
>> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>> Hi,
>>>
>>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>>
>>>> Hi,
>>>>
>>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>> Hi,
>>>>>
>>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>>
>>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>>
>>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>>
>>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>>
>>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>>
>>>>> right.
>>>>>>>>
>>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>>> me.
>>>>>>>>
>>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>>> share code between the master/slave sides?
>>>>>>>>
>>>>>>>
>>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>>
>>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>>> similar for PCI but decided against it since that would involve identifying all
>>>>> the PCI IPs used and eventually result in more directories.
>>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>>> other types of functions.
>>>>>
>>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>>
>>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>>> mangled inside host. I suggest:
>>>>>>>
>>>>>>> drivers/pci
>>>>>>>  drivers/pci/core/
>>>>>>>  drivers/pci/core/hotplug
>>>>>>>  drivers/pci/core/pcie
>>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>>  drivers/pci/host
>>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>>
>>>>>> Correction:
>>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>>> drivers
>>>>>>
>>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>
>>>>>> Correction:
>>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>
>>>>>>>  drivers/pci/endpoint -> common code
>>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>>
>>>>> There are some parts of the dwc driver that is common to both root complex and
>>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>>> piece in both root complex and endpoint.
>>>>
>>>> You are right, the config space is almost the same and some ops also common.
>>>> I would suggest:
>>>>
>>>> drivers/pci
>>>>   drivers/pci/core/
>>>>     drivers/pci/core/hotplug
>>>>     drivers/pci/core/pcie
>>>>     drivers/pci/core/<all other files inside pci/ today>
>>>>   drivers/pci/dwc
>>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>>     drivers/pci/dwc/host/
>>>>     drivers/pci/dwc/endpoint/
>>>>
>>>> What do you think?
>>>
>>> I don't think we should have sub-directories within dwc (USB too doesn't have
>>> sub-directories). Where should the platform specific driver be kept? For
>>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>>> changes are so minimal that splitting the file won't make much sense.
>>>
>>> And such a change would also mean we create a separate directory for every
>>> other driver present right now in pci/host.
>>
>> I understand you idea. We can simplify it this way:
>>
>>  drivers/pci
>>    drivers/pci/core/
>>      drivers/pci/core/hotplug
>>      drivers/pci/core/pcie
>>      drivers/pci/core/<all other files inside pci/ today>
>>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
>> and EP
>>
>> BTW dwc states for DesigWare Controller.
>>
>> What do you think?
> 
> I'd like to avoid using different directory structures for different IPs. Lets
> try to make it uniform.

I understand, but mixing them all up is not a good aproach in my opinion, since
a SoCs using Synopsys IP will only use the common files for that IP. Today in
the host/ folder you have a bunch of drivers that is not clear which are using
Synopsys IP or not. Of course I mention Synopsys, because it is where I work,
but the opinion would be the same for other IP vendor.

I understand that you want to do a common Endpoint framework to be used by any
IP vendor based, and maybe this partition makes it a bit harder, but in my
personal opinion each IP vendor should have its own folder for clarity and
organization of the code.

You framework should be outside those IP vendor folders and be available for
their drivers to use it, and so it should be completely vendor agnostic.

> 
> Thanks
> Kishon
> 

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Kishon Vijay Abraham I Dec. 29, 2016, 12:20 p.m. UTC | #13

Hi,

On Thursday 29 December 2016 05:38 PM, Joao Pinto wrote:
> Às 11:58 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>> Hi,
>>
>> On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
>>> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>> Hi,
>>>>
>>>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>>> Hi,
>>>>>>
>>>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>>>
>>>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>>>
>>>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>>>
>>>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>>>
>>>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>>>
>>>>>> right.
>>>>>>>>>
>>>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>>>> me.
>>>>>>>>>
>>>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>>>> share code between the master/slave sides?
>>>>>>>>>
>>>>>>>>
>>>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>>>
>>>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>>>> similar for PCI but decided against it since that would involve identifying all
>>>>>> the PCI IPs used and eventually result in more directories.
>>>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>>>> other types of functions.
>>>>>>
>>>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>>>
>>>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>>>> mangled inside host. I suggest:
>>>>>>>>
>>>>>>>> drivers/pci
>>>>>>>>  drivers/pci/core/
>>>>>>>>  drivers/pci/core/hotplug
>>>>>>>>  drivers/pci/core/pcie
>>>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>>>  drivers/pci/host
>>>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>>>
>>>>>>> Correction:
>>>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>>>> drivers
>>>>>>>
>>>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>
>>>>>>> Correction:
>>>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>
>>>>>>>>  drivers/pci/endpoint -> common code
>>>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>>>
>>>>>> There are some parts of the dwc driver that is common to both root complex and
>>>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>>>> piece in both root complex and endpoint.
>>>>>
>>>>> You are right, the config space is almost the same and some ops also common.
>>>>> I would suggest:
>>>>>
>>>>> drivers/pci
>>>>>   drivers/pci/core/
>>>>>     drivers/pci/core/hotplug
>>>>>     drivers/pci/core/pcie
>>>>>     drivers/pci/core/<all other files inside pci/ today>
>>>>>   drivers/pci/dwc
>>>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>>>     drivers/pci/dwc/host/
>>>>>     drivers/pci/dwc/endpoint/
>>>>>
>>>>> What do you think?
>>>>
>>>> I don't think we should have sub-directories within dwc (USB too doesn't have
>>>> sub-directories). Where should the platform specific driver be kept? For
>>>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>>>> changes are so minimal that splitting the file won't make much sense.
>>>>
>>>> And such a change would also mean we create a separate directory for every
>>>> other driver present right now in pci/host.
>>>
>>> I understand you idea. We can simplify it this way:
>>>
>>>  drivers/pci
>>>    drivers/pci/core/
>>>      drivers/pci/core/hotplug
>>>      drivers/pci/core/pcie
>>>      drivers/pci/core/<all other files inside pci/ today>
>>>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
>>> and EP
>>>
>>> BTW dwc states for DesigWare Controller.
>>>
>>> What do you think?
>>
>> I'd like to avoid using different directory structures for different IPs. Lets
>> try to make it uniform.
> 
> I understand, but mixing them all up is not a good aproach in my opinion, since
> a SoCs using Synopsys IP will only use the common files for that IP. Today in
> the host/ folder you have a bunch of drivers that is not clear which are using
> Synopsys IP or not. Of course I mention Synopsys, because it is where I work,
> but the opinion would be the same for other IP vendor.

right, but it has been that way always. My point is why should we disturb it
for the sake of adding endpoint support.
> 
> I understand that you want to do a common Endpoint framework to be used by any
> IP vendor based, and maybe this partition makes it a bit harder, but in my
> personal opinion each IP vendor should have its own folder for clarity and
> organization of the code.
> 
> You framework should be outside those IP vendor folders and be available for
> their drivers to use it, and so it should be completely vendor agnostic.

right, that's how it was designed (please see drivers/pci/endpoint/ directories
in RFC [1] which has the endpoint framework).

[1] -> https://lkml.org/lkml/2016/9/14/27
> 
>>
>> Thanks
>> Kishon
>>
> 
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Joao Pinto Dec. 29, 2016, 12:23 p.m. UTC | #14

Às 12:20 PM de 12/29/2016, Kishon Vijay Abraham I escreveu:
> Hi,
> 
> On Thursday 29 December 2016 05:38 PM, Joao Pinto wrote:
>> Às 11:58 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>> Hi,
>>>
>>> On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
>>>> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>> Hi,
>>>>>
>>>>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>>>> Hi,
>>>>>>>
>>>>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>>>>
>>>>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>>>>
>>>>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>>>>
>>>>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>>>>
>>>>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>>>>
>>>>>>> right.
>>>>>>>>>>
>>>>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>>>>> me.
>>>>>>>>>>
>>>>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>>>>> share code between the master/slave sides?
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>>>>
>>>>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>>>>> similar for PCI but decided against it since that would involve identifying all
>>>>>>> the PCI IPs used and eventually result in more directories.
>>>>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>>>>> other types of functions.
>>>>>>>
>>>>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>>>>
>>>>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>>>>> mangled inside host. I suggest:
>>>>>>>>>
>>>>>>>>> drivers/pci
>>>>>>>>>  drivers/pci/core/
>>>>>>>>>  drivers/pci/core/hotplug
>>>>>>>>>  drivers/pci/core/pcie
>>>>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>>>>  drivers/pci/host
>>>>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>>>>
>>>>>>>> Correction:
>>>>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>>>>> drivers
>>>>>>>>
>>>>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>
>>>>>>>> Correction:
>>>>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>
>>>>>>>>>  drivers/pci/endpoint -> common code
>>>>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>>>>
>>>>>>> There are some parts of the dwc driver that is common to both root complex and
>>>>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>>>>> piece in both root complex and endpoint.
>>>>>>
>>>>>> You are right, the config space is almost the same and some ops also common.
>>>>>> I would suggest:
>>>>>>
>>>>>> drivers/pci
>>>>>>   drivers/pci/core/
>>>>>>     drivers/pci/core/hotplug
>>>>>>     drivers/pci/core/pcie
>>>>>>     drivers/pci/core/<all other files inside pci/ today>
>>>>>>   drivers/pci/dwc
>>>>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>>>>     drivers/pci/dwc/host/
>>>>>>     drivers/pci/dwc/endpoint/
>>>>>>
>>>>>> What do you think?
>>>>>
>>>>> I don't think we should have sub-directories within dwc (USB too doesn't have
>>>>> sub-directories). Where should the platform specific driver be kept? For
>>>>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>>>>> changes are so minimal that splitting the file won't make much sense.
>>>>>
>>>>> And such a change would also mean we create a separate directory for every
>>>>> other driver present right now in pci/host.
>>>>
>>>> I understand you idea. We can simplify it this way:
>>>>
>>>>  drivers/pci
>>>>    drivers/pci/core/
>>>>      drivers/pci/core/hotplug
>>>>      drivers/pci/core/pcie
>>>>      drivers/pci/core/<all other files inside pci/ today>
>>>>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
>>>> and EP
>>>>
>>>> BTW dwc states for DesigWare Controller.
>>>>
>>>> What do you think?
>>>
>>> I'd like to avoid using different directory structures for different IPs. Lets
>>> try to make it uniform.
>>
>> I understand, but mixing them all up is not a good aproach in my opinion, since
>> a SoCs using Synopsys IP will only use the common files for that IP. Today in
>> the host/ folder you have a bunch of drivers that is not clear which are using
>> Synopsys IP or not. Of course I mention Synopsys, because it is where I work,
>> but the opinion would be the same for other IP vendor.
> 
> right, but it has been that way always. My point is why should we disturb it
> for the sake of adding endpoint support.
>>
>> I understand that you want to do a common Endpoint framework to be used by any
>> IP vendor based, and maybe this partition makes it a bit harder, but in my
>> personal opinion each IP vendor should have its own folder for clarity and
>> organization of the code.
>>
>> You framework should be outside those IP vendor folders and be available for
>> their drivers to use it, and so it should be completely vendor agnostic.
> 
> right, that's how it was designed (please see drivers/pci/endpoint/ directories
> in RFC [1] which has the endpoint framework).
> 
> [1] -> https://urldefense.proofpoint.com/v2/url?u=https-3A__lkml.org_lkml_2016_9_14_27&d=DgID-g&c=DPL6_X_6JkXFx7AXWqB0tg&r=s2fO0hii0OGNOv9qQy_HRXy-xAJUD1NNoEcc3io_kx0&m=Usq-eV6vJQ4rVg_Jj-JzgYyH26VfwLaqXDrE_54JCmg&s=wSindfuj1wjD3QeOSzLJNPmgMyqcZNtNX0X-D5yCpqw&e= 

Ok, I am going to check it out, thanks!

>>
>>>
>>> Thanks
>>> Kishon
>>>
>>

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Joao Pinto Dec. 29, 2016, 1:19 p.m. UTC | #15

Hi,

Às 12:20 PM de 12/29/2016, Kishon Vijay Abraham I escreveu:
> Hi,
> 
> On Thursday 29 December 2016 05:38 PM, Joao Pinto wrote:
>> Às 11:58 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>> Hi,
>>>
>>> On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
>>>> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>> Hi,
>>>>>
>>>>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>>>> Hi,
>>>>>>>
>>>>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>>>>
>>>>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>>>>
>>>>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>>>>
>>>>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>>>>
>>>>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>>>>
>>>>>>> right.
>>>>>>>>>>
>>>>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>>>>> me.
>>>>>>>>>>
>>>>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>>>>> share code between the master/slave sides?
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>>>>
>>>>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>>>>> similar for PCI but decided against it since that would involve identifying all
>>>>>>> the PCI IPs used and eventually result in more directories.
>>>>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>>>>> other types of functions.
>>>>>>>
>>>>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>>>>
>>>>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>>>>> mangled inside host. I suggest:
>>>>>>>>>
>>>>>>>>> drivers/pci
>>>>>>>>>  drivers/pci/core/
>>>>>>>>>  drivers/pci/core/hotplug
>>>>>>>>>  drivers/pci/core/pcie
>>>>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>>>>  drivers/pci/host
>>>>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>>>>
>>>>>>>> Correction:
>>>>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>>>>> drivers
>>>>>>>>
>>>>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>
>>>>>>>> Correction:
>>>>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>
>>>>>>>>>  drivers/pci/endpoint -> common code
>>>>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>>>>
>>>>>>> There are some parts of the dwc driver that is common to both root complex and
>>>>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>>>>> piece in both root complex and endpoint.
>>>>>>
>>>>>> You are right, the config space is almost the same and some ops also common.
>>>>>> I would suggest:
>>>>>>
>>>>>> drivers/pci
>>>>>>   drivers/pci/core/
>>>>>>     drivers/pci/core/hotplug
>>>>>>     drivers/pci/core/pcie
>>>>>>     drivers/pci/core/<all other files inside pci/ today>
>>>>>>   drivers/pci/dwc
>>>>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>>>>     drivers/pci/dwc/host/
>>>>>>     drivers/pci/dwc/endpoint/
>>>>>>
>>>>>> What do you think?
>>>>>
>>>>> I don't think we should have sub-directories within dwc (USB too doesn't have
>>>>> sub-directories). Where should the platform specific driver be kept? For
>>>>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>>>>> changes are so minimal that splitting the file won't make much sense.
>>>>>
>>>>> And such a change would also mean we create a separate directory for every
>>>>> other driver present right now in pci/host.
>>>>
>>>> I understand you idea. We can simplify it this way:
>>>>
>>>>  drivers/pci
>>>>    drivers/pci/core/
>>>>      drivers/pci/core/hotplug
>>>>      drivers/pci/core/pcie
>>>>      drivers/pci/core/<all other files inside pci/ today>
>>>>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
>>>> and EP
>>>>
>>>> BTW dwc states for DesigWare Controller.
>>>>
>>>> What do you think?
>>>
>>> I'd like to avoid using different directory structures for different IPs. Lets
>>> try to make it uniform.
>>
>> I understand, but mixing them all up is not a good aproach in my opinion, since
>> a SoCs using Synopsys IP will only use the common files for that IP. Today in
>> the host/ folder you have a bunch of drivers that is not clear which are using
>> Synopsys IP or not. Of course I mention Synopsys, because it is where I work,
>> but the opinion would be the same for other IP vendor.
> 
> right, but it has been that way always. My point is why should we disturb it
> for the sake of adding endpoint support.
>>
>> I understand that you want to do a common Endpoint framework to be used by any
>> IP vendor based, and maybe this partition makes it a bit harder, but in my
>> personal opinion each IP vendor should have its own folder for clarity and
>> organization of the code.
>>
>> You framework should be outside those IP vendor folders and be available for
>> their drivers to use it, and so it should be completely vendor agnostic.
> 
> right, that's how it was designed (please see drivers/pci/endpoint/ directories
> in RFC [1] which has the endpoint framework).
> 
> [1] -> https://urldefense.proofpoint.com/v2/url?u=https-3A__lkml.org_lkml_2016_9_14_27&d=DgID-g&c=DPL6_X_6JkXFx7AXWqB0tg&r=s2fO0hii0OGNOv9qQy_HRXy-xAJUD1NNoEcc3io_kx0&m=Usq-eV6vJQ4rVg_Jj-JzgYyH26VfwLaqXDrE_54JCmg&s=wSindfuj1wjD3QeOSzLJNPmgMyqcZNtNX0X-D5yCpqw&e= 

I have checked your patch and seems very useful for certain that I am going to
use to add support a DWC reference Endpoint driver.
Synopsys Endpoint has a DMA engine available that can be used or not by the IP
client. To configure and use it the IP as a set of registers that like other IP
must be configured and managed. Other IP vendors won't have this feature for
sure. So I am saying is, although it gets simpler to have a host/ and a
endpoint/ folder with everything inside, I still feel that we should isolate IP
vendor stuff in isolated ecosystems creating host/dwc and endpoint/dwc where
Synopsys clients can put their drivers and use the common functions. Current
host/ is just a place where every Root Complex driver is deployed. I know it
works of course, but if you are improving structure why not organize it better?
I think that organizing right now would be the perfect timming, in my opinion of
course!

>>
>>>
>>> Thanks
>>> Kishon
>>>
>>

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Kishon Vijay Abraham I Dec. 30, 2016, 6:23 a.m. UTC | #16

Hi,

On Thursday 29 December 2016 06:49 PM, Joao Pinto wrote:
> 
> Hi,
> 
> Às 12:20 PM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>> Hi,
>>
>> On Thursday 29 December 2016 05:38 PM, Joao Pinto wrote:
>>> Às 11:58 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>> Hi,
>>>>
>>>> On Thursday 29 December 2016 05:23 PM, Joao Pinto wrote:
>>>>> Às 11:48 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>>> Hi,
>>>>>>
>>>>>> On Thursday 29 December 2016 04:08 PM, Joao Pinto wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> Às 5:46 AM de 12/29/2016, Kishon Vijay Abraham I escreveu:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> On Wednesday 28 December 2016 10:50 PM, Joao Pinto wrote:
>>>>>>>>> Às 5:17 PM de 12/28/2016, Joao Pinto escreveu:
>>>>>>>>>> Às 4:41 PM de 12/28/2016, Bjorn Helgaas escreveu:
>>>>>>>>>>> On Wed, Dec 28, 2016 at 01:57:13PM +0000, Joao Pinto wrote:
>>>>>>>>>>>> Às 9:22 AM de 12/28/2016, Christoph Hellwig escreveu:
>>>>>>>>>>>>> On Wed, Dec 28, 2016 at 01:39:37PM +0530, Kishon Vijay Abraham I wrote:
>>>>>>>>>>>>>> As discussed during our LPC discussions, I'm posting the rename patch
>>>>>>>>>>>>>> here. I'll post the rest of EP series before the next merge window.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> There might be hiccups because of this renaming but feel this is
>>>>>>>>>>>>>> necessary for long-term maintenance.
>>>>>>>>>>>>>
>>>>>>>>>>>>> if we do this rename it would be great to get it to Linus NOW after
>>>>>>>>>>>>> -rc1 as that minimizes the impact on the 4.11 merge window.
>>>>>>>>>>>>
>>>>>>>>>>>> Rename it to controller is a bit vague I thing since we have the PCI Endpoint IP
>>>>>>>>>>>> also. Wouldn't be better to name it rc_controller?
>>>>>>>>>>>
>>>>>>>>>>> I think Kishon's whole goal is to add PCI Endpoint IP, so he wants a
>>>>>>>>>>> neutral name that can cover both RC and Endpoint.
>>>>>>>>
>>>>>>>> right.
>>>>>>>>>>>
>>>>>>>>>>> I'm not a huge fan of "controller" because it feels a little bit long
>>>>>>>>>>> and while I suppose it technically does include the concept of the PCI
>>>>>>>>>>> interface of an endpoint, it still suggests more of the host side to
>>>>>>>>>>> me.
>>>>>>>>>>>
>>>>>>>>>>> Doesn't USB have a similar situation?  I see there's a
>>>>>>>>>>> drivers/usb/host/ (probably where we copied from in the first place).
>>>>>>>>>>> Is a USB gadget the USB analog of what you're doing?  How do they
>>>>>>>>>>> share code between the master/slave sides?
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> The usb/host contains the implemnentations by the spec of the several
>>>>>>>>>> *hci (USB Host) and then you can have for example the USB 3.0 Designware
>>>>>>>>>> Host specific ops in dwc3 and for USB 2.0 in dwc2/.
>>>>>>>>
>>>>>>>> right, each IP have a separate directory in USB. I thought of doing something
>>>>>>>> similar for PCI but decided against it since that would involve identifying all
>>>>>>>> the PCI IPs used and eventually result in more directories.
>>>>>>>>>> For device purposes it uses the core/ and then some of the device functions
>>>>>>>>>> are extended from the gadget/ package in which you can use mass_storage and
>>>>>>>>>> other types of functions.
>>>>>>>>
>>>>>>>> That would be similar for PCI endpoint. All endpoint specific core
>>>>>>>> functionality will be added in drivers/pci/endpoint (see RFC [1]).
>>>>>>>>>>
>>>>>>>>>> In our case in PCI we have the core functions inside /drivers/pci and the host
>>>>>>>>>> mangled inside host. I suggest:
>>>>>>>>>>
>>>>>>>>>> drivers/pci
>>>>>>>>>>  drivers/pci/core/
>>>>>>>>>>  drivers/pci/core/hotplug
>>>>>>>>>>  drivers/pci/core/pcie
>>>>>>>>>>  drivers/pci/core/<all other files inside pci/ today>
>>>>>>>>>>  drivers/pci/host
>>>>>>>>>>  drivers/pci/dwc -> here would be pcie-designware and the specific vendor drivers
>>>>>>>>>
>>>>>>>>> Correction:
>>>>>>>>> drivers/pci/host/dwc -> here would be pcie-designware and the specific vendor
>>>>>>>>> drivers
>>>>>>>>>
>>>>>>>>>>  drivers/pci/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>>
>>>>>>>>> Correction:
>>>>>>>>> drivers/pci/host/<vendorN> -> here would be the drivers for vendorN controller
>>>>>>>>>
>>>>>>>>>>  drivers/pci/endpoint -> common code
>>>>>>>>>>  drivers/pci/endpoint/dwc -> implementation of Synopsys specific endpoint ops
>>>>>>>>>>  drivers/pci/<vendorN> -> implementation of other vendors specific endpoint ops
>>>>>>>>
>>>>>>>> There are some parts of the dwc driver that is common to both root complex and
>>>>>>>> endpoint. Where should that be? I'm sure no one wants to duplicate the common
>>>>>>>> piece in both root complex and endpoint.
>>>>>>>
>>>>>>> You are right, the config space is almost the same and some ops also common.
>>>>>>> I would suggest:
>>>>>>>
>>>>>>> drivers/pci
>>>>>>>   drivers/pci/core/
>>>>>>>     drivers/pci/core/hotplug
>>>>>>>     drivers/pci/core/pcie
>>>>>>>     drivers/pci/core/<all other files inside pci/ today>
>>>>>>>   drivers/pci/dwc
>>>>>>>     drivers/pci/dwc/common.c -> common ops and registers between RC and endpoint
>>>>>>>     drivers/pci/dwc/host/
>>>>>>>     drivers/pci/dwc/endpoint/
>>>>>>>
>>>>>>> What do you think?
>>>>>>
>>>>>> I don't think we should have sub-directories within dwc (USB too doesn't have
>>>>>> sub-directories). Where should the platform specific driver be kept? For
>>>>>> example pci-dra7xx.c (which use dwc) has both rc and ep specific parts but the
>>>>>> changes are so minimal that splitting the file won't make much sense.
>>>>>>
>>>>>> And such a change would also mean we create a separate directory for every
>>>>>> other driver present right now in pci/host.
>>>>>
>>>>> I understand you idea. We can simplify it this way:
>>>>>
>>>>>  drivers/pci
>>>>>    drivers/pci/core/
>>>>>      drivers/pci/core/hotplug
>>>>>      drivers/pci/core/pcie
>>>>>      drivers/pci/core/<all other files inside pci/ today>
>>>>>      drivers/pci/dwc -> Common files (RC and EP), specific vendor drivers for EP
>>>>> and EP
>>>>>
>>>>> BTW dwc states for DesigWare Controller.
>>>>>
>>>>> What do you think?
>>>>
>>>> I'd like to avoid using different directory structures for different IPs. Lets
>>>> try to make it uniform.
>>>
>>> I understand, but mixing them all up is not a good aproach in my opinion, since
>>> a SoCs using Synopsys IP will only use the common files for that IP. Today in
>>> the host/ folder you have a bunch of drivers that is not clear which are using
>>> Synopsys IP or not. Of course I mention Synopsys, because it is where I work,
>>> but the opinion would be the same for other IP vendor.
>>
>> right, but it has been that way always. My point is why should we disturb it
>> for the sake of adding endpoint support.
>>>
>>> I understand that you want to do a common Endpoint framework to be used by any
>>> IP vendor based, and maybe this partition makes it a bit harder, but in my
>>> personal opinion each IP vendor should have its own folder for clarity and
>>> organization of the code.
>>>
>>> You framework should be outside those IP vendor folders and be available for
>>> their drivers to use it, and so it should be completely vendor agnostic.
>>
>> right, that's how it was designed (please see drivers/pci/endpoint/ directories
>> in RFC [1] which has the endpoint framework).
>>
>> [1] -> https://urldefense.proofpoint.com/v2/url?u=https-3A__lkml.org_lkml_2016_9_14_27&d=DgID-g&c=DPL6_X_6JkXFx7AXWqB0tg&r=s2fO0hii0OGNOv9qQy_HRXy-xAJUD1NNoEcc3io_kx0&m=Usq-eV6vJQ4rVg_Jj-JzgYyH26VfwLaqXDrE_54JCmg&s=wSindfuj1wjD3QeOSzLJNPmgMyqcZNtNX0X-D5yCpqw&e= 
> 
> I have checked your patch and seems very useful for certain that I am going to
> use to add support a DWC reference Endpoint driver.
> Synopsys Endpoint has a DMA engine available that can be used or not by the IP
> client. To configure and use it the IP as a set of registers that like other IP
> must be configured and managed. Other IP vendors won't have this feature for
> sure. So I am saying is, although it gets simpler to have a host/ and a
> endpoint/ folder with everything inside, I still feel that we should isolate IP
> vendor stuff in isolated ecosystems creating host/dwc and endpoint/dwc where
> Synopsys clients can put their drivers and use the common functions. Current
> host/ is just a place where every Root Complex driver is deployed. I know it
> works of course, but if you are improving structure why not organize it better?

I'm not inclined to have host/dwc or endpoint/dwc as that would mean the driver
code is spread across multiple directories.
I would be rather okay to have separate directory for dwc (and have both RC/EP
controller drivers there).
But let's get the opinion of others. Bjorn? Jingoo?

Thanks
Kishon
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Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index cfff2c9..2ac7a4b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5969,7 +5969,7 @@  F:	arch/x86/kernel/cpu/mshyperv.c
 F:	drivers/hid/hid-hyperv.c
 F:	drivers/hv/
 F:	drivers/input/serio/hyperv-keyboard.c
-F:	drivers/pci/host/pci-hyperv.c
+F:	drivers/pci/controller/pci-hyperv.c
 F:	drivers/net/hyperv/
 F:	drivers/scsi/storvsc_drv.c
 F:	drivers/uio/uio_hv_generic.c
@@ -9413,7 +9413,7 @@  L:	[e-mail] (moderated for non-subscribers)
 L:	[e-mail]
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/altera-pcie.txt
-F:	drivers/pci/host/pcie-altera.c
+F:	drivers/pci/controller/pcie-altera.c
 
 PCI DRIVER FOR ARM VERSATILE PLATFORM
 M:	Rob Herring <[e-mail]>
@@ -9421,7 +9421,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/versatile.txt
-F:	drivers/pci/host/pci-versatile.c
+F:	drivers/pci/controller/pci-versatile.c
 
 PCI DRIVER FOR ARMADA 8K
 M:	Thomas Petazzoni <[e-mail]>
@@ -9429,7 +9429,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
-F:	drivers/pci/host/pcie-armada8k.c
+F:	drivers/pci/controller/pcie-armada8k.c
 
 PCI DRIVER FOR APPLIEDMICRO XGENE
 M:	Tanmay Inamdar <[e-mail]>
@@ -9437,7 +9437,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/xgene-pci.txt
-F:	drivers/pci/host/pci-xgene.c
+F:	drivers/pci/controller/pci-xgene.c
 
 PCI DRIVER FOR FREESCALE LAYERSCAPE
 M:	Minghuan Lian <[e-mail]>
@@ -9447,7 +9447,7 @@  L:	[e-mail]
 L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
-F:	drivers/pci/host/*layerscape*
+F:	drivers/pci/controller/*layerscape*
 
 PCI DRIVER FOR IMX6
 M:	Richard Zhu <[e-mail]>
@@ -9456,14 +9456,14 @@  L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
-F:	drivers/pci/host/*imx6*
+F:	drivers/pci/controller/*imx6*
 
 PCI DRIVER FOR TI KEYSTONE
 M:	Murali Karicheri <[e-mail]>
 L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/host/*keystone*
+F:	drivers/pci/controller/*keystone*
 
 PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
 M:	Thomas Petazzoni <[e-mail]>
@@ -9471,7 +9471,7 @@  M:	Jason Cooper <[e-mail]>
 L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/host/*mvebu*
+F:	drivers/pci/controller/*mvebu*
 
 PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
 M:	Thomas Petazzoni <[e-mail]>
@@ -9479,7 +9479,7 @@  L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
-F:	drivers/pci/host/pci-aardvark.c
+F:	drivers/pci/controller/pci-aardvark.c
 
 PCI DRIVER FOR NVIDIA TEGRA
 M:	Thierry Reding <[e-mail]>
@@ -9487,7 +9487,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
-F:	drivers/pci/host/pci-tegra.c
+F:	drivers/pci/controller/pci-tegra.c
 
 PCI DRIVER FOR TI DRA7XX
 M:	Kishon Vijay Abraham I <[e-mail]>
@@ -9495,14 +9495,14 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/ti-pci.txt
-F:	drivers/pci/host/pci-dra7xx.c
+F:	drivers/pci/controller/pci-dra7xx.c
 
 PCI DRIVER FOR RENESAS R-CAR
 M:	Simon Horman <[e-mail]>
 L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
-F:	drivers/pci/host/*rcar*
+F:	drivers/pci/controller/*rcar*
 
 PCI DRIVER FOR SAMSUNG EXYNOS
 M:	Jingoo Han <[e-mail]>
@@ -9510,7 +9510,7 @@  L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/host/pci-exynos.c
+F:	drivers/pci/controller/pci-exynos.c
 
 PCI DRIVER FOR SYNOPSIS DESIGNWARE
 M:	Jingoo Han <[e-mail]>
@@ -9518,7 +9518,7 @@  M:	Joao Pinto <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/designware-pcie.txt
-F:	drivers/pci/host/*designware*
+F:	drivers/pci/controller/*designware*
 
 PCI DRIVER FOR GENERIC OF HOSTS
 M:	Will Deacon <[e-mail]>
@@ -9526,20 +9526,20 @@  L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/host-generic-pci.txt
-F:	drivers/pci/host/pci-host-common.c
-F:	drivers/pci/host/pci-host-generic.c
+F:	drivers/pci/controller/pci-host-common.c
+F:	drivers/pci/controller/pci-host-generic.c
 
 PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
 M:	Keith Busch <[e-mail]>
 L:	[e-mail]
 S:	Supported
-F:	drivers/pci/host/vmd.c
+F:	drivers/pci/controller/vmd.c
 
 PCIE DRIVER FOR ST SPEAR13XX
 M:	Pratyush Anand <[e-mail]>
 L:	[e-mail]
 S:	Maintained
-F:	drivers/pci/host/*spear*
+F:	drivers/pci/controller/*spear*
 
 PCI MSI DRIVER FOR ALTERA MSI IP
 M:	Ley Foon Tan <[e-mail]>
@@ -9547,7 +9547,7 @@  L:	[e-mail] (moderated for non-subscribers)
 L:	[e-mail]
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
-F:	drivers/pci/host/pcie-altera-msi.c
+F:	drivers/pci/controller/pcie-altera-msi.c
 
 PCI MSI DRIVER FOR APPLIEDMICRO XGENE
 M:	Duc Dang <[e-mail]>
@@ -9555,7 +9555,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
-F:	drivers/pci/host/pci-xgene-msi.c
+F:	drivers/pci/controller/pci-xgene-msi.c
 
 PCIE DRIVER FOR AXIS ARTPEC
 M:	Niklas Cassel <[e-mail]>
@@ -9564,7 +9564,7 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/axis,artpec*
-F:	drivers/pci/host/*artpec*
+F:	drivers/pci/controller/*artpec*
 
 PCIE DRIVER FOR HISILICON
 M:	Zhou Wang <[e-mail]>
@@ -9572,7 +9572,7 @@  M:	Gabriele Paoloni <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
-F:	drivers/pci/host/pcie-hisi.c
+F:	drivers/pci/controller/pcie-hisi.c
 
 PCIE DRIVER FOR ROCKCHIP
 M:	Shawn Lin <[e-mail]>
@@ -9581,14 +9581,14 @@  L:	[e-mail]
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/rockchip-pcie.txt
-F:	drivers/pci/host/pcie-rockchip.c
+F:	drivers/pci/controller/pcie-rockchip.c
 
 PCIE DRIVER FOR QUALCOMM MSM
 M:     Stanimir Varbanov <[e-mail]>
 L:     [e-mail]
 L:     [e-mail]
 S:     Maintained
-F:     drivers/pci/host/*qcom*
+F:     drivers/pci/controller/*qcom*
 
 PCIE DRIVER FOR CAVIUM THUNDERX
 M:	David Daney <[e-mail]>
@@ -9596,7 +9596,7 @@  L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/pci-thunder-*
-F:	drivers/pci/host/pci-thunder-*
+F:	drivers/pci/controller/pci-thunder-*
 
 PCMCIA SUBSYSTEM
 P:	Linux PCMCIA Team
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 6555eb7..fa56abd 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -132,4 +132,4 @@  config PCI_HYPERV
           PCI devices from a PCI backend to support PCI driver domains.
 
 source "drivers/pci/hotplug/Kconfig"
-source "drivers/pci/host/Kconfig"
+source "drivers/pci/controller/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 8db5079..94bf91d 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -67,4 +67,4 @@  obj-$(CONFIG_OF) += of.o
 ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
 
 # PCI host controller drivers
-obj-y += host/
+obj-y += controller/
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/controller/Kconfig
similarity index 100%
rename from drivers/pci/host/Kconfig
rename to drivers/pci/controller/Kconfig
diff --git a/drivers/pci/host/Makefile b/drivers/pci/controller/Makefile
similarity index 100%
rename from drivers/pci/host/Makefile
rename to drivers/pci/controller/Makefile
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
similarity index 100%
rename from drivers/pci/host/pci-aardvark.c
rename to drivers/pci/controller/pci-aardvark.c
diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/controller/pci-dra7xx.c
similarity index 100%
rename from drivers/pci/host/pci-dra7xx.c
rename to drivers/pci/controller/pci-dra7xx.c
diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/controller/pci-exynos.c
similarity index 100%
rename from drivers/pci/host/pci-exynos.c
rename to drivers/pci/controller/pci-exynos.c
diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
similarity index 100%
rename from drivers/pci/host/pci-host-common.c
rename to drivers/pci/controller/pci-host-common.c
diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
similarity index 100%
rename from drivers/pci/host/pci-host-generic.c
rename to drivers/pci/controller/pci-host-generic.c
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
similarity index 100%
rename from drivers/pci/host/pci-hyperv.c
rename to drivers/pci/controller/pci-hyperv.c
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/controller/pci-imx6.c
similarity index 100%
rename from drivers/pci/host/pci-imx6.c
rename to drivers/pci/controller/pci-imx6.c
diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/controller/pci-keystone-dw.c
similarity index 100%
rename from drivers/pci/host/pci-keystone-dw.c
rename to drivers/pci/controller/pci-keystone-dw.c
diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/controller/pci-keystone.c
similarity index 100%
rename from drivers/pci/host/pci-keystone.c
rename to drivers/pci/controller/pci-keystone.c
diff --git a/drivers/pci/host/pci-keystone.h b/drivers/pci/controller/pci-keystone.h
similarity index 100%
rename from drivers/pci/host/pci-keystone.h
rename to drivers/pci/controller/pci-keystone.h
diff --git a/drivers/pci/host/pci-layerscape.c b/drivers/pci/controller/pci-layerscape.c
similarity index 100%
rename from drivers/pci/host/pci-layerscape.c
rename to drivers/pci/controller/pci-layerscape.c
diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
similarity index 100%
rename from drivers/pci/host/pci-mvebu.c
rename to drivers/pci/controller/pci-mvebu.c
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
similarity index 100%
rename from drivers/pci/host/pci-rcar-gen2.c
rename to drivers/pci/controller/pci-rcar-gen2.c
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
similarity index 100%
rename from drivers/pci/host/pci-tegra.c
rename to drivers/pci/controller/pci-tegra.c
diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
similarity index 100%
rename from drivers/pci/host/pci-thunder-ecam.c
rename to drivers/pci/controller/pci-thunder-ecam.c
diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
similarity index 100%
rename from drivers/pci/host/pci-thunder-pem.c
rename to drivers/pci/controller/pci-thunder-pem.c
diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
similarity index 100%
rename from drivers/pci/host/pci-versatile.c
rename to drivers/pci/controller/pci-versatile.c
diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
similarity index 100%
rename from drivers/pci/host/pci-xgene-msi.c
rename to drivers/pci/controller/pci-xgene-msi.c
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
similarity index 100%
rename from drivers/pci/host/pci-xgene.c
rename to drivers/pci/controller/pci-xgene.c
diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
similarity index 100%
rename from drivers/pci/host/pcie-altera-msi.c
rename to drivers/pci/controller/pcie-altera-msi.c
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
similarity index 100%
rename from drivers/pci/host/pcie-altera.c
rename to drivers/pci/controller/pcie-altera.c
diff --git a/drivers/pci/host/pcie-armada8k.c b/drivers/pci/controller/pcie-armada8k.c
similarity index 100%
rename from drivers/pci/host/pcie-armada8k.c
rename to drivers/pci/controller/pcie-armada8k.c
diff --git a/drivers/pci/host/pcie-artpec6.c b/drivers/pci/controller/pcie-artpec6.c
similarity index 100%
rename from drivers/pci/host/pcie-artpec6.c
rename to drivers/pci/controller/pcie-artpec6.c
diff --git a/drivers/pci/host/pcie-designware-plat.c b/drivers/pci/controller/pcie-designware-plat.c
similarity index 100%
rename from drivers/pci/host/pcie-designware-plat.c
rename to drivers/pci/controller/pcie-designware-plat.c
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/controller/pcie-designware.c
similarity index 100%
rename from drivers/pci/host/pcie-designware.c
rename to drivers/pci/controller/pcie-designware.c
diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/controller/pcie-designware.h
similarity index 100%
rename from drivers/pci/host/pcie-designware.h
rename to drivers/pci/controller/pcie-designware.h
diff --git a/drivers/pci/host/pcie-hisi.c b/drivers/pci/controller/pcie-hisi.c
similarity index 100%
rename from drivers/pci/host/pcie-hisi.c
rename to drivers/pci/controller/pcie-hisi.c
diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
similarity index 100%
rename from drivers/pci/host/pcie-iproc-bcma.c
rename to drivers/pci/controller/pcie-iproc-bcma.c
diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c
similarity index 100%
rename from drivers/pci/host/pcie-iproc-msi.c
rename to drivers/pci/controller/pcie-iproc-msi.c
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
similarity index 100%
rename from drivers/pci/host/pcie-iproc-platform.c
rename to drivers/pci/controller/pcie-iproc-platform.c
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
similarity index 100%
rename from drivers/pci/host/pcie-iproc.c
rename to drivers/pci/controller/pcie-iproc.c
diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/controller/pcie-iproc.h
similarity index 100%
rename from drivers/pci/host/pcie-iproc.h
rename to drivers/pci/controller/pcie-iproc.h
diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/controller/pcie-qcom.c
similarity index 100%
rename from drivers/pci/host/pcie-qcom.c
rename to drivers/pci/controller/pcie-qcom.c
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
similarity index 100%
rename from drivers/pci/host/pcie-rcar.c
rename to drivers/pci/controller/pcie-rcar.c
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
similarity index 100%
rename from drivers/pci/host/pcie-rockchip.c
rename to drivers/pci/controller/pcie-rockchip.c
diff --git a/drivers/pci/host/pcie-spear13xx.c b/drivers/pci/controller/pcie-spear13xx.c
similarity index 100%
rename from drivers/pci/host/pcie-spear13xx.c
rename to drivers/pci/controller/pcie-spear13xx.c
diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
similarity index 100%
rename from drivers/pci/host/pcie-xilinx-nwl.c
rename to drivers/pci/controller/pcie-xilinx-nwl.c
diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
similarity index 100%
rename from drivers/pci/host/pcie-xilinx.c
rename to drivers/pci/controller/pcie-xilinx.c
diff --git a/drivers/pci/host/vmd.c b/drivers/pci/controller/vmd.c
similarity index 100%
rename from drivers/pci/host/vmd.c
rename to drivers/pci/controller/vmd.c