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From: Duc Dang <dhdang@apm.com>
To: Jon Masters <jcm@redhat.com>
Cc: Gabriele Paoloni <gabriele.paoloni@huawei.com>,
	"liudongdong (C)" <liudongdong3@huawei.com>,
	"helgaas@kernel.org" <helgaas@kernel.org>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"will.deacon@arm.com" <will.deacon@arm.com>,
	"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
	"rafael@kernel.org" <rafael@kernel.org>,
	"hanjun.guo@linaro.org" <hanjun.guo@linaro.org>,
	"Lorenzo.Pieralisi@arm.com" <Lorenzo.Pieralisi@arm.com>,
	"okaya@codeaurora.org" <okaya@codeaurora.org>,
	"jchandra@broadcom.com" <jchandra@broadcom.com>,
	"tn@semihalf.com" <tn@semihalf.com>,
	"linaro-acpi@lists.linaro.org" <linaro-acpi@lists.linaro.org>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"Liviu.Dudau@arm.com" <Liviu.Dudau@arm.com>,
	"ddaney@caviumnetworks.com" <ddaney@caviumnetworks.com>,
	"jeremy.linton@arm.com" <jeremy.linton@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"robert.richter@caviumnetworks.com" 
	<robert.richter@caviumnetworks.com>,
	"Chenxin (Charles)" <charles.chenxin@huawei.com>,
	"cov@codeaurora.org" <cov@codeaurora.org>,
	Wangyijing <wangyijing@huawei.com>,
	"mw@semihalf.com" <mw@semihalf.com>,
	"andrea.gallo@linaro.org" <andrea.gallo@linaro.org>,
	Linuxarm <linuxarm@huawei.com>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [Linaro-acpi] [RFC PATCH V2 1/2] ACPI/PCI: Match PCI config space accessors against platfrom specific ECAM quirks
Date: Thu, 16 Jun 2016 00:45:21 -0700	[thread overview]
Message-ID: <CADaLNDnjEuGvWxCMPb=9fiCeVMgF0RRzT2n1SjNw3o57gRUhcg@mail.gmail.com> (raw)
In-Reply-To: <e3174a09-e6f8-126d-d3c5-648d1cfd2b74@redhat.com>

On Wed, Jun 15, 2016 at 11:31 PM, Jon Masters <jcm@redhat.com> wrote:
> On 06/13/2016 09:54 AM, Gabriele Paoloni wrote:
>> Hi Tomasz, Jon
>
> Hi Gab,
>
> Sorry for the lag in following up.
>
> <snip>
>
>> As you can see here Liudongdong has replaced oem_revision with
>> oem_table_id.
>>
>> Now it seems that there are some platforms that have already shipped
>> using a matching based on the oem_revision (right Jon?)
>
> Actually, it turns out (Cov is correct) that we can just match on OEM
> Table ID. The revision should not generally be needed and the vendors
> will just need to make sure that they change OEM Table ID in future
> silicon. An example from two shipping platforms:
>
> 1). AppliedMicro Mustang:
>
> [000h 0000   4]                    Signature : "MCFG"    [Memory Mapped
> Configuration table]
> [004h 0004   4]                 Table Length : 0000003C
> [008h 0008   1]                     Revision : 01
> [009h 0009   1]                     Checksum : 4A
> [00Ah 0010   6]                       Oem ID : "APM   "
> [010h 0016   8]                 Oem Table ID : "XGENE   "
> [018h 0024   4]                 Oem Revision : 00000002
> [01Ch 0028   4]              Asl Compiler ID : "INTL"
> [020h 0032   4]        Asl Compiler Revision : 20140724
>
> 2). HP(E[0]) Moonshot:
>
> [000h 0000   4]                    Signature : "MCFG"    [Memory Mapped
> Configuration table]
> [004h 0004   4]                 Table Length : 0000003C
> [008h 0008   1]                     Revision : 01
> [009h 0009   1]                     Checksum : 48
> [00Ah 0010   6]                       Oem ID : "APM   "
> [010h 0016   8]                 Oem Table ID : "XGENE   "
> [018h 0024   4]                 Oem Revision : 00000001
> [01Ch 0028   4]              Asl Compiler ID : "HP  "
> [020h 0032   4]        Asl Compiler Revision : 00000001
>
> I have pinged the semiconductor (Applied) and insisted upon a written
> plan (which I have now) for handling the first affect generation(s) and
> future chip roadmap stuff, along with how they plan to upstream this
> immediately as part of this thread. I have also done similar with each
> of the other vendors (this is something ARM or Linaro should be doing).
> But I particularly care about X-Gene because I want it to be loved as
> shipping silicon in production systems (Moonshot) that are sitting and
> waiting in the Fedora Phoenix datacenter in large quantity to come
> online if only an upstream kernel would actually boot on them :)

Thanks for the MCFG information on Moonshot system, Jon.

I will make sure the posted quirk for X-Gene takes care for HPE
Moonshot system as well.

Regards,
Duc Dang.

>
>> However I guess that if in FW they have defined oem_table_id properly
>> they should be able to use this mechanism without needing to a FW update.
>
> Correct.
>
>> Can these vendors confirm this?
>
> I've checked all current shipping silicon and prototypes.
>
>> Tomasz do you think this can work for Cavium Thunder?
>
> Will let the vendors followup directly as well.
>
> Jon.
>
> [0] Fortunately that name change doesn't factor when using semiconductor
> matching...hopefully none of the non-complaint IP companies in gen1
> stuff get bought and change their table names. In the unlikely event
> that that does happen, I will preemptively beat them up and ensure that
> something crazy doesn't happen with table contents.
>
> --
> Computer Architect | Sent from my Fedora powered laptop

  reply	other threads:[~2016-06-16  7:45 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-13 13:02 [RFC PATCH V2 0/2] ECAM quirks handling for ARM64 platforms Dongdong Liu
2016-06-13 13:02 ` [RFC PATCH V2 1/2] ACPI/PCI: Match PCI config space accessors against platfrom specific ECAM quirks Dongdong Liu
2016-06-13 13:54   ` Gabriele Paoloni
2016-06-13 14:02     ` Sinan Kaya
2016-06-13 14:29       ` Gabriele Paoloni
2016-06-13 15:12         ` okaya
2016-06-13 15:59           ` Jeffrey Hugo
2016-06-13 21:07             ` Duc Dang
2016-06-16  6:31     ` [Linaro-acpi] " Jon Masters
2016-06-16  7:45       ` Duc Dang [this message]
2016-06-16  7:54         ` Jon Masters
2016-06-13 15:47   ` Christopher Covington
2016-06-13 20:57     ` Duc Dang
2016-06-14  5:51       ` Dongdong Liu
2016-06-14  9:00         ` Duc Dang
2016-06-14  9:45           ` Dongdong Liu
2016-06-14 11:52             ` Tomasz Nowicki
2016-06-14 17:43               ` Duc Dang
2016-06-13 13:02 ` [RFC PATCH V2 2/2] ARM64/PCI: Start using quirks handling for ACPI based PCI host controller Dongdong Liu

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