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From: Jason Gunthorpe <jgg@ziepe.ca>
To: "Deucher, Alexander" <Alexander.Deucher@amd.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
	Sinan Kaya <okaya@codeaurora.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"sulrich@codeaurora.org" <sulrich@codeaurora.org>,
	"timur@codeaurora.org" <timur@codeaurora.org>,
	"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	Mike Marciniszyn <mike.marciniszyn@intel.com>,
	Dennis Dalessandro <dennis.dalessandro@intel.com>,
	Doug Ledford <dledford@redhat.com>,
	"open list:HFI1 DRIVER" <linux-rdma@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] IB/hfi1: Try slot reset before secondary bus reset
Date: Fri, 20 Apr 2018 08:55:21 -0600	[thread overview]
Message-ID: <20180420145521.GB30433@ziepe.ca> (raw)
In-Reply-To: <BN6PR12MB1809BD30AA5B890C054F9832F7B50@BN6PR12MB1809.namprd12.prod.outlook.com>

On Thu, Apr 19, 2018 at 10:11:27PM +0000, Deucher, Alexander wrote:

> My understanding was that some platfoms only bring up the link in
> gen 1 mode for compatibility reasons.  TBH, I'm not that familiar
> with how the links come up on different platforms.

Then the platform firmware or platform's linux PCI root complex driver
should perform speed negotiation.

Something like that shouldn't be a driver problem to solve.

The driver should only be involved if it has to alter the device (eg
new device firmware or something)..

Jason

  parent reply	other threads:[~2018-04-20 14:55 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-19 19:56 Sinan Kaya
2018-04-19 19:56 ` [PATCH 2/2] PCI/AER: " Sinan Kaya
2018-04-27 18:51   ` Sinan Kaya
2018-04-19 20:26 ` [PATCH 1/2] IB/hfi1: " Jason Gunthorpe
2018-04-19 20:35   ` Sinan Kaya
2018-04-19 21:47   ` Bjorn Helgaas
2018-04-19 22:11     ` Deucher, Alexander
2018-04-20 14:12       ` Dennis Dalessandro
2018-04-20 14:55       ` Jason Gunthorpe [this message]
2018-04-19 22:19     ` Sinan Kaya
2018-04-20 14:00       ` Bjorn Helgaas
2018-04-20 14:23         ` Sinan Kaya
2018-04-20 15:04         ` Alex Williamson
2018-04-23 17:28           ` Sinan Kaya
2018-04-23 19:10             ` Alex Williamson
2018-04-23 20:17               ` Sinan Kaya
2018-04-23 20:23               ` Bjorn Helgaas
2018-04-23 20:41                 ` Alex Williamson
2018-04-25 14:13               ` Sinan Kaya
2018-04-20 14:54     ` Jason Gunthorpe
2018-06-19 21:43 ` Bjorn Helgaas
2018-06-19 22:21   ` Sinan Kaya
2018-06-22 14:01     ` Bjorn Helgaas
2018-06-22 16:04       ` Sinan Kaya

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