From: Jayachandran C <jchandra@broadcom.com>
To: David Daney <ddaney@caviumnetworks.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Tomasz Nowicki <tn@semihalf.com>,
rafael@kernel.org, Arnd Bergmann <arnd@arndb.de>,
Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Hanjun Guo <hanjun.guo@linaro.org>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Sinan Kaya <okaya@codeaurora.org>,
jiang.liu@linux.intel.com,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
robert.richter@caviumnetworks.com,
Marcin Wojtas <mw@semihalf.com>,
Liviu.Dudau@arm.com, Wangyijing <wangyijing@huawei.com>,
Suravee.Suthikulpanit@amd.com, msalter@redhat.com,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
linaro-acpi@lists.linaro.org, Jon Masters <jcm@redhat.com>
Subject: Re: [PATCH v2 3/4] PCI: generic, thunder: update to use generic ECAM API
Date: Thu, 14 Apr 2016 19:45:43 +0530 [thread overview]
Message-ID: <CAKc_7PXdVYmm5LEUzCttagf9b4O9R--3OO1+u1CXTjGgi-K_rw@mail.gmail.com> (raw)
In-Reply-To: <570C429A.6090006@caviumnetworks.com>
Hi David,
On Tue, Apr 12, 2016 at 6:04 AM, David Daney <ddaney@caviumnetworks.com> wrote:
> On 04/11/2016 03:45 PM, Jayachandran C wrote:
>>
>> Use functions provided by drivers/pci/ecam.h for mapping the config
>> space in drivers/pci/host/pci-host-common.c, and update its users to
>> use 'struct pci_config_window' and 'struct pci_generic_ecam_ops'
>>
>> The changes are mostly to use 'struct pci_config_window' in place of
>> 'struct gen_pci'. Some of the fields of gen_pci were only used
>> temporarily and can be eliminated by using local variables or function
>> arguments, these are not carried over to struct pci_config_window.
>>
>> pci-thunder-ecam.c and pci-thunder-pem.c are the only users of the
>> pci_host_common_probe function and the gen_pci structure, these have
>> been updated to use the new API as well.
>>
>> The patch does not introduce any functional changes other than a very
>> minor one: with the new code, on 64-bit platforms, we do just a single
>> ioremap for the whole config space.
>>
>> Signed-off-by: Jayachandran C <jchandra@broadcom.com>
>
>
> Tested-by: David Daney <david.daney@cavium.com>
Thanks.
> However, ...
>
>> ---
>> drivers/pci/ecam.h | 5 ++
>> drivers/pci/host/Kconfig | 1 +
>> drivers/pci/host/pci-host-common.c | 121
>> ++++++++++++++++--------------------
>> drivers/pci/host/pci-host-common.h | 47 --------------
>> drivers/pci/host/pci-host-generic.c | 50 +++------------
>> drivers/pci/host/pci-thunder-ecam.c | 37 +++--------
>> drivers/pci/host/pci-thunder-pem.c | 53 +++++-----------
>
>
> ... The patch conflicts with a bug-fix patch I just sent to
> pci-thunder-pem.c, so there will be a race to see who gets in first.
I would expect this patchset to take more time than the bugfix.
I will update the patches when the fix is queued to -next.
> Also, I don't know if it would make sense to split out the pci-thunder-*
> changes to a separate patch.
In this case, I think splitting the pci-thunder-* will make it more
complex than just switching everything to ecam.h in one go.
If the patch needs to be split, I can move some of the simplification
that was done to gen_pci structure and pci-host-common to a separate
patch.
JC.
next prev parent reply other threads:[~2016-04-14 14:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-11 22:45 [PATCH v2 0/4] ACPI based PCI host driver with generic ECAM Jayachandran C
2016-04-11 22:45 ` [PATCH v2 1/4] arm64: Prepare to use generic ACPI PCI implementation Jayachandran C
2016-04-11 22:45 ` [PATCH v2 2/4] PCI: Provide common functions for ECAM mapping Jayachandran C
2016-04-12 0:24 ` David Daney
2016-04-12 4:26 ` Jon Masters
2016-04-12 16:44 ` Lorenzo Pieralisi
2016-04-14 5:55 ` Jon Masters
2016-04-14 10:05 ` Lorenzo Pieralisi
2016-04-14 15:40 ` Jayachandran C
2016-04-11 22:45 ` [PATCH v2 3/4] PCI: generic, thunder: update to use generic ECAM API Jayachandran C
2016-04-12 0:34 ` David Daney
2016-04-14 14:15 ` Jayachandran C [this message]
2016-04-11 22:45 ` [PATCH v2 4/4] ACPI: PCI: Add generic PCI host controller Jayachandran C
2016-04-12 1:38 ` kbuild test robot
2016-04-14 15:53 ` Sinan Kaya
2016-04-14 15:58 ` Sinan Kaya
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