[PATCH RESEND v5 00/14] PCI: dwc: Relatively simple fixes and cleanups

Serge Semin
2023-05-11T19:09:32Z

It turns out the recent DW PCIe-related patchset was merged in with
several relatively trivial issues left unsettled (noted by Bjorn and
Manivannan). All of these lefovers have been fixed in this patchset.
Namely the series starts with two bug-fixes. The first one concerns the
improper link-mode initialization in case if the CDM-check is enabled. The
second unfortunate mistake I made in the IP-core version type helper. In
particular instead of testing the IP-core version type the macro function
referred to the just IP-core version which obviously wasn't what I
intended.

Afterwards two @Mani-noted fixes follow. Firstly the dma-ranges related warning
message is fixed to start with "DMA-ranges" word instead of "Dma-ranges".
Secondly the Baikal-T1 PCIe Host driver is converted to perform the
asynchronous probe type which saved us of about 15% of bootup time if no any
PCIe peripheral device attached to the port.

Then the patchset contains the Baikal-T1 PCIe driver fix. The
corresponding patch removes the false error message printed during the
controller probe procedure. I accidentally added the unconditional
dev_err_probe() method invocation. It was obviously wrong.

Then two trivial cleanups are introduced. The first one concerns the
duplicated fast-link-mode flag unsetting. The second one implies
dropping a redundant empty line from the dw_pcie_link_set_max_speed()
function.

The series continues with a patch inspired by the last @Bjorn note
regarding the generic resources request interface. As @Bjorn correctly
said it would be nice to have the new interface used wider in the DW PCIe
subsystem. Aside with the Baikal-T1 PCIe Host driver the Toshiba Visconti
PCIe driver can be easily converted to using the generic clock names.
That's what is done in the noted patch.

The patchset is closed with a series of MAINTAINERS-list related patches.
Firstly after getting the DW PCIe RP/EP DT-schemas refactored I forgot to
update the MAINTAINER-list with the new files added in the framework of
that procedure. All the snps,dw-pcie* schemas shall be maintained by the
DW PCIe core driver maintainers. Secondly seeing how long it took for my
patchsets to review and not having any comments from the original driver
maintainers I'd suggest to add myself as the reviewer to the DW PCIe and
eDMA drivers. Thus hopefully the new updates review process will be
performed with much less latencies. For the same reason @Manivannan is
added to the maintainers list of the DW PCIe/eDMA drivers as he already
agreed to be in.

Link: https://lore.kernel.org/linux-pci/20230217093956.27126-1-Sergey.Semin@baikalelectronics.ru/
Changelog v2:
- Rebase onto the kernel 6.3-rc2.

Link: https://lore.kernel.org/linux-pci/20230313200816.30105-1-Sergey.Semin@baikalelectronics.ru/
Changelog v3:
- Drop the patch:
[PATCH v2 01/11] PCI: dwc: Fix port link CSR improper init if CDM check enabled
and rebase onto the already submitted by @Yoshihiro fix:
commit cdce67099117 ("PCI: dwc: Fix PORT_LINK_CONTROL update when CDM check enabled")
- Just resend.

Link: https://lore.kernel.org/linux-pci/20230411033928.30397-1-Sergey.Semin@baikalelectronics.ru/
Changelog v4:
- Demote @Gustavo to being DW PCIe/eDMA drivers reviewer:
[PATCH v4 9/14] MAINTAINERS: Demote Gustavo Pimentel to DW PCIe core reviewer
[PATCH v4 12/14] MAINTAINERS: Demote Gustavo Pimentel to DW EDMA driver reviewer
- Add Manivannan to the DW PCIe/eDMA drivers maintainers list:
[PATCH v4 10/14] MAINTAINERS: Add Manivannan to DW PCIe core maintainers list
[PATCH v4 13/14] MAINTAINERS: Add Manivannan to DW eDMA driver maintainers list

Link: https://lore.kernel.org/linux-pci/20230414021832.13167-1-Sergey.Semin@baikalelectronics.ru/
Changelog v5:
- Rebase onto the kernel 6.4-rc1.
- Just resend.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>
Cc: linux-pci@vger.kernel.org
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Serge Semin (14):
PCI: dwc: Fix erroneous version type test helper
PCI: dwc: Fix inbound iATU entries out-of-bounds warning message
PCI: bt1: Enable async probe type
PCI: bt1: Fix printing false error message
PCI: dwc: Drop duplicated fast-link-mode flag unsetting
PCI: dwc: Drop empty line from dw_pcie_link_set_max_speed()
PCI: visconti: Convert to using generic resources getter
MAINTAINERS: Add all generic DW PCIe RP/EP DT-schemas
MAINTAINERS: Demote Gustavo Pimentel to DW PCIe core reviewer
MAINTAINERS: Add Manivannan to DW PCIe core maintainers list
MAINTAINERS: Add myself as the DW PCIe core reviewer
MAINTAINERS: Demote Gustavo Pimentel to DW EDMA driver reviewer
MAINTAINERS: Add Manivannan to DW eDMA driver maintainers list
MAINTAINERS: Add myself as the DW eDMA driver reviewer

MAINTAINERS | 11 ++++--
drivers/pci/controller/dwc/pcie-bt1.c | 5 ++-
.../pci/controller/dwc/pcie-designware-host.c | 2 +-
drivers/pci/controller/dwc/pcie-designware.c | 2 -
drivers/pci/controller/dwc/pcie-designware.h | 7 +++-
drivers/pci/controller/dwc/pcie-visconti.c | 37 +++++++++----------
6 files changed, 34 insertions(+), 30 deletions(-)

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2.40.0