From: Yazen Ghannam <yazen.ghannam@amd.com>
To: Naveen Krishna Chatradhi <nchatrad@amd.com>
Cc: linux-edac@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org, bp@alien8.de, mingo@redhat.com,
mchehab@kernel.org, Muralidhara M K <muralimk@amd.com>
Subject: Re: [PATCH v7 08/12] EDAC/amd64: Add Family ops to update GPU csrow and channel info
Date: Tue, 15 Feb 2022 16:43:47 +0000 [thread overview]
Message-ID: <YgvYQ5RKpx5hZAAN@yaz-ubuntu> (raw)
In-Reply-To: <20220203174942.31630-9-nchatrad@amd.com>
On Thu, Feb 03, 2022 at 11:49:38AM -0600, Naveen Krishna Chatradhi wrote:
> GPU node has 'X' number of PHYs and 'Y' number of channels.
> This results in 'X*Y' number of instances in the Data Fabric.
> Therefore the Data Fabric ID of an instance in GPU as below:
> df_inst_id = 'X' * number of channels per PHY + 'Y'
>
> On CPUs the Data Fabric ID of an instance on a CPU is equal to the
> UMC number. since the UMC number and channel are equal in CPU nodes,
> the channel can be used as the Data Fabric ID of the instance.
>
> Cc: Yazen Ghannam <yazen.ghannam@amd.com>
> Co-developed-by: Muralidhara M K <muralimk@amd.com>
> Signed-off-by: Muralidhara M K <muralimk@amd.com>
> Signed-off-by: Naveen Krishna Chatradhi <nchatrad@amd.com>
> ---
> v1->v7:
> * New change in v7
>
> drivers/edac/amd64_edac.c | 60 +++++++++++++++++++++++++++++++++++++--
> drivers/edac/amd64_edac.h | 2 ++
> 2 files changed, 60 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
> index 10efe726a959..241419a0be93 100644
> --- a/drivers/edac/amd64_edac.c
> +++ b/drivers/edac/amd64_edac.c
> @@ -3653,6 +3653,30 @@ static inline void decode_bus_error(int node_id, struct mce *m)
> __log_ecc_error(mci, &err, ecc_type);
> }
>
> +/*
> + * On CPUs, The Data Fabric ID of an instance is equal to the UMC number.
> + * And since the UMC number and channel are equal in CPU nodes, the channel can be used
> + * as the Data Fabric ID of the instance.
> + */
> +static int f17_df_inst_id(struct mem_ctl_info *mci, struct amd64_pvt *pvt,
> + struct err_info *err)
> +{
> + return err->channel;
> +}
> +
> +/*
> + * A GPU node has 'X' number of PHYs and 'Y' number of channels.
> + * This results in 'X*Y' number of instances in the Data Fabric.
> + * Therefore the Data Fabric ID of an instance can be found with the following formula:
> + * df_inst_id = 'X' * number of channels per PHY + 'Y'
> + *
> + */
> +static int gpu_df_inst_id(struct mem_ctl_info *mci, struct amd64_pvt *pvt,
> + struct err_info *err)
> +{
> + return (err->csrow * pvt->channel_count / mci->nr_csrows) + err->channel;
> +}
> +
The DF Instance ID needs to get adjusted again later in the translation code
due to the fixed mapping of CSes to UMCs. Can that be done here instead? Also,
I assume that fixed mapping is unique to each product, so that would make it a
good fit for the family/pvt ops.
Thanks,
Yazen
next prev parent reply other threads:[~2022-02-15 16:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-03 17:49 [PATCH v7 00/12] x86/edac/amd64: Add support for GPU nodes Naveen Krishna Chatradhi
2022-02-03 17:49 ` [PATCH v7 01/12] EDAC/amd64: Document heterogeneous enumeration Naveen Krishna Chatradhi
2022-02-09 22:34 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 02/12] x86/amd_nb: Add support for northbridges on Aldebaran Naveen Krishna Chatradhi
2022-02-09 23:23 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 03/12] EDAC/mce_amd: Extract node id from MCA_IPID Naveen Krishna Chatradhi
2022-02-09 23:31 ` Yazen Ghannam
2022-02-14 17:54 ` Chatradhi, Naveen Krishna
2022-02-03 17:49 ` [PATCH v7 04/12] EDAC/amd64: Move struct fam_type variables into amd64_pvt structure Naveen Krishna Chatradhi
2022-02-15 15:39 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 05/12] EDAC/amd64: Define dynamic family ops routines Naveen Krishna Chatradhi
2022-02-15 15:49 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 06/12] EDAC/amd64: Add AMD heterogeneous family 19h Model 30h-3fh Naveen Krishna Chatradhi
2022-02-15 16:20 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 07/12] EDAC/amd64: Enumerate Aldebaran GPU nodes by adding family ops Naveen Krishna Chatradhi
2022-02-15 16:34 ` Yazen Ghannam
2022-02-03 17:49 ` [PATCH v7 08/12] EDAC/amd64: Add Family ops to update GPU csrow and channel info Naveen Krishna Chatradhi
2022-02-15 16:43 ` Yazen Ghannam [this message]
2022-02-03 17:49 ` [PATCH v7 09/12] EDAC/amd64: Add check for when to add DRAM base and hole Naveen Krishna Chatradhi
2022-02-03 17:49 ` [PATCH v7 10/12] EDAC/amd64: Save the number of block instances Naveen Krishna Chatradhi
2022-02-03 17:49 ` [PATCH v7 11/12] EDAC/amd64: Add address translation support for DF3.5 Naveen Krishna Chatradhi
2022-02-03 17:49 ` [PATCH v7 12/12] EDAC/amd64: Add fixed UMC to CS mapping Naveen Krishna Chatradhi
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