* Request for Info: Designware PCIe Root Complex support in ARM64
@ 2016-03-11 11:33 Joao Pinto
2016-03-11 11:49 ` Liviu Dudau
2016-03-11 19:46 ` Bjorn Helgaas
0 siblings, 2 replies; 5+ messages in thread
From: Joao Pinto @ 2016-03-11 11:33 UTC (permalink / raw)
To: Liviu Dudau, catalin.marinas, Bjorn Helgaas; +Cc: linux-pci
Hi Liviu, Catalin and Bjorn,
I am currently working on the PCIe Root Complex based on the Designware Core
(/pci/host/pcie-desigware.c). I have noticed that currently building a solution
based on the previous for an ARM64 CPU is problematic and demands some tweaking
in the ARM64 arch (like adding some functions in the pcibios, etc.).
I would like to know if any specific work is being planned for this matter and
in what I could contribute to make it happen.
Thanks,
Joao Pinto
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Request for Info: Designware PCIe Root Complex support in ARM64
2016-03-11 11:33 Request for Info: Designware PCIe Root Complex support in ARM64 Joao Pinto
@ 2016-03-11 11:49 ` Liviu Dudau
2016-03-11 19:46 ` Bjorn Helgaas
1 sibling, 0 replies; 5+ messages in thread
From: Liviu Dudau @ 2016-03-11 11:49 UTC (permalink / raw)
To: Joao Pinto; +Cc: catalin.marinas, Bjorn Helgaas, linux-pci, Lorenzo Pieralisi
On Fri, Mar 11, 2016 at 11:33:12AM +0000, Joao Pinto wrote:
> Hi Liviu, Catalin and Bjorn,
Adding Lorenzo as he has been taking over the PCIe side from me for a while now.
Best regards,
Liviu
>
> I am currently working on the PCIe Root Complex based on the Designware Core
> (/pci/host/pcie-desigware.c). I have noticed that currently building a solution
> based on the previous for an ARM64 CPU is problematic and demands some tweaking
> in the ARM64 arch (like adding some functions in the pcibios, etc.).
>
> I would like to know if any specific work is being planned for this matter and
> in what I could contribute to make it happen.
>
> Thanks,
> Joao Pinto
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Request for Info: Designware PCIe Root Complex support in ARM64
2016-03-11 11:33 Request for Info: Designware PCIe Root Complex support in ARM64 Joao Pinto
2016-03-11 11:49 ` Liviu Dudau
@ 2016-03-11 19:46 ` Bjorn Helgaas
2016-03-14 12:15 ` Lorenzo Pieralisi
1 sibling, 1 reply; 5+ messages in thread
From: Bjorn Helgaas @ 2016-03-11 19:46 UTC (permalink / raw)
To: Joao Pinto; +Cc: Liviu Dudau, catalin.marinas, linux-pci, Lorenzo Pieralisi
[+cc Lorenzo]
On Fri, Mar 11, 2016 at 11:33:12AM +0000, Joao Pinto wrote:
> Hi Liviu, Catalin and Bjorn,
>
> I am currently working on the PCIe Root Complex based on the Designware Core
> (/pci/host/pcie-desigware.c). I have noticed that currently building a solution
> based on the previous for an ARM64 CPU is problematic and demands some tweaking
> in the ARM64 arch (like adding some functions in the pcibios, etc.).
If I understand you correctly, you're saying that pcie-designware.c
doesn't build on arm64. It would be helpful to know exactly what
problem you're seeing (what kernel version, what config, what the
error are, etc.)
PCI_LAYERSCAPE, PCI_HISI, and PCIE_QCOM can all be enabled on arm64,
and it looks like they all depend on pcie-designware.c. I can't build
those drivers personally, but I assume they work.
Bjorn
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Request for Info: Designware PCIe Root Complex support in ARM64
2016-03-11 19:46 ` Bjorn Helgaas
@ 2016-03-14 12:15 ` Lorenzo Pieralisi
2016-03-15 11:33 ` Joao Pinto
0 siblings, 1 reply; 5+ messages in thread
From: Lorenzo Pieralisi @ 2016-03-14 12:15 UTC (permalink / raw)
To: Bjorn Helgaas; +Cc: Joao Pinto, Liviu Dudau, catalin.marinas, linux-pci
On Fri, Mar 11, 2016 at 01:46:00PM -0600, Bjorn Helgaas wrote:
> [+cc Lorenzo]
>
> On Fri, Mar 11, 2016 at 11:33:12AM +0000, Joao Pinto wrote:
> > Hi Liviu, Catalin and Bjorn,
> >
> > I am currently working on the PCIe Root Complex based on the Designware Core
> > (/pci/host/pcie-desigware.c). I have noticed that currently building a solution
> > based on the previous for an ARM64 CPU is problematic and demands some tweaking
> > in the ARM64 arch (like adding some functions in the pcibios, etc.).
>
> If I understand you correctly, you're saying that pcie-designware.c
> doesn't build on arm64. It would be helpful to know exactly what
> problem you're seeing (what kernel version, what config, what the
> error are, etc.)
Yes, I am not sure I understand what Joao is referring to so I would
be grateful if he can provide us with additional details.
Thanks,
Lorenzo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Request for Info: Designware PCIe Root Complex support in ARM64
2016-03-14 12:15 ` Lorenzo Pieralisi
@ 2016-03-15 11:33 ` Joao Pinto
0 siblings, 0 replies; 5+ messages in thread
From: Joao Pinto @ 2016-03-15 11:33 UTC (permalink / raw)
To: Lorenzo Pieralisi, Bjorn Helgaas
Cc: Joao Pinto, Liviu Dudau, catalin.marinas, linux-pci
Hi!
Just built the linux-next for ARM64 and built beautifully so there is no issue.
I was having an issue using 3.18, but with this new kernel no issues were found.
Thanks for all your inputs!
Joao
On 3/14/2016 12:15 PM, Lorenzo Pieralisi wrote:
> On Fri, Mar 11, 2016 at 01:46:00PM -0600, Bjorn Helgaas wrote:
>> [+cc Lorenzo]
>>
>> On Fri, Mar 11, 2016 at 11:33:12AM +0000, Joao Pinto wrote:
>>> Hi Liviu, Catalin and Bjorn,
>>>
>>> I am currently working on the PCIe Root Complex based on the Designware Core
>>> (/pci/host/pcie-desigware.c). I have noticed that currently building a solution
>>> based on the previous for an ARM64 CPU is problematic and demands some tweaking
>>> in the ARM64 arch (like adding some functions in the pcibios, etc.).
>>
>> If I understand you correctly, you're saying that pcie-designware.c
>> doesn't build on arm64. It would be helpful to know exactly what
>> problem you're seeing (what kernel version, what config, what the
>> error are, etc.)
>
> Yes, I am not sure I understand what Joao is referring to so I would
> be grateful if he can provide us with additional details.
>
> Thanks,
> Lorenzo
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-03-15 11:33 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-03-11 11:33 Request for Info: Designware PCIe Root Complex support in ARM64 Joao Pinto
2016-03-11 11:49 ` Liviu Dudau
2016-03-11 19:46 ` Bjorn Helgaas
2016-03-14 12:15 ` Lorenzo Pieralisi
2016-03-15 11:33 ` Joao Pinto
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