linux-kernel - Re: [PATCH v5 00/12] PCI endpoint 64-bit BAR fixes

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Message-ID: <20180402193920.GC23587@flawful.org>
Date:   Mon, 2 Apr 2018 21:39:21 +0200
From:   Niklas Cassel <nks@...wful.org>
To:     Gustavo Pimentel <gustavo.pimentel@...opsys.com>
Cc:     Niklas Cassel <niklas.cassel@...s.com>,
        "kishon@...com" <kishon@...com>,
        "cyrille.pitchen@...e-electrons.com" 
        <cyrille.pitchen@...e-electrons.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alan Douglas <adouglas@...ence.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Niklas Cassel <niklass@...s.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 00/12] PCI endpoint 64-bit BAR fixes

On Thu, Mar 29, 2018 at 02:52:56PM +0100, Gustavo Pimentel wrote:
> Hi Niklas,
> 
> On 28/03/2018 12:50, Niklas Cassel wrote:
> > PCI endpoint fixes to improve the way 64-bit BARs are handled.
> > 
> > 
> > There are still future improvements that could be made:
> > 
> > pci-epf-test.c always allocates space for
> > 6 BARs, even when using 64-bit BARs (which
> > really only requires us to allocate 3 BARs).
> > 
> > pcitest.sh will print "NOT OKAY" for BAR1,
> > BAR3, and BAR5 when using 64-bit BARs.
> > This could probably be improved to say
> > something like "N/A (64-bit BAR)".
> > 
> > Niklas Cassel (12):
> >   PCI: endpoint: BAR width should not depend on sizeof dma_addr_t
> >   PCI: endpoint: Simplify epc->ops->set_bar()/pci_epc_set_bar()
> >   PCI: endpoint: Setting BAR_5 to 64-bits wide is invalid
> >   PCI: endpoint: Setting 64-bit/prefetch bit is invalid when IO is set
> >   PCI: endpoint: Setting a BAR size > 4 GB is invalid if 64-bit flag is
> >     not set
> >   PCI: designware-ep: Make dw_pcie_ep_set_bar() handle 64-bit BARs
> >     properly
> >   PCI: cadence: Set PCI_BASE_ADDRESS_MEM_TYPE_64 if a 64-bit BAR was
> >     set-up
> >   PCI: endpoint: Handle 64-bit BARs properly
> >   PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take
> >     struct *epf_bar
> >   PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when
> >     clearing
> >   PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs
> >     properly
> >   misc: pci_endpoint_test: Handle 64-bit BARs properly
> > 
> >  drivers/misc/pci_endpoint_test.c              | 12 +++++----
> >  drivers/pci/cadence/pcie-cadence-ep.c         | 15 ++++++++---
> >  drivers/pci/dwc/pcie-designware-ep.c          | 36 +++++++++++++++++++++------
> >  drivers/pci/endpoint/functions/pci-epf-test.c | 28 +++++++++++++--------
> >  drivers/pci/endpoint/pci-epc-core.c           | 32 +++++++++++++++---------
> >  drivers/pci/endpoint/pci-epf-core.c           |  4 +++
> >  include/linux/pci-epc.h                       | 11 ++++----
> >  include/linux/pci-epf.h                       |  2 ++
> >  8 files changed, 95 insertions(+), 45 deletions(-)
> > 
> 
> For the whole series:
> 
> Tested-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>

Hello Gustavo,

Thanks a lot for testing!

Kind regards,
Niklas