From: Borislav Petkov <bp@amd64.org>
To: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Linux Edac Mailing List <linux-edac@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Doug Thompson <norsk5@yahoo.com>
Subject: Re: [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers
Date: Mon, 23 Apr 2012 19:49:55 +0200 [thread overview]
Message-ID: <20120423174955.GH6147@aftab.osrc.amd.com> (raw)
In-Reply-To: <1334607133-30039-7-git-send-email-mchehab@redhat.com>
Subject: "edac.h: Prepare to handle with generic layers"
what does that even mean?
Do you per chance mean
"Add generic layers for describing a memory location"
or something similar?
On Mon, Apr 16, 2012 at 05:12:12PM -0300, Mauro Carvalho Chehab wrote:
> The edac core were written with the idea that memory controllers
> are able to directly access csrows, and that the channels are
> used inside a csrows select.
>
> This is not true for FB-DIMM and RAMBUS memory controllers.
>
> Also, some recent advanced memory controllers don't present a per-csrows
> view. Instead, they view memories as DIMM's, instead of ranks, accessed
DIMMs
> via csrow/channel.
>
> So, changes are needed in order to allow the EDAC core to
> work with all types of architectures.
>
> As a preparation for handling non-csrows based memory controllers,
In preparation...
> adds some memory structs and a macro:
add some...
> enum hw_event_mc_err_type: describes the type of error
> (corrected, uncorrected, fatal)
>
> To be used by the new edac_mc_handle_error function;
>
> enum edac_mc_layer: describes the type of a given Memory
memory
> architecture layer (branch, channel, slot, csrow).
>
> struct edac_mc_layer: describes the properties of a memory
> layer (type, size, and if the layer
> will be used on a virtual csrow.
>
> GET_POS() - as the number of layers can vary from 1 to 3,
> this macro converts from an address with up to 3 layers into
> a linear address.
>
> Cc: Doug Thompson <norsk5@yahoo.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
> ---
> include/linux/edac.h | 83 +++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 82 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/edac.h b/include/linux/edac.h
> index 8b78bd0..0fdf6ba 100644
> --- a/include/linux/edac.h
> +++ b/include/linux/edac.h
> @@ -67,6 +67,25 @@ enum dev_type {
> #define DEV_FLAG_X64 BIT(DEV_X64)
>
> /**
> + * enum hw_event_mc_err_type - type of the detected error
> + *
> + * @HW_EVENT_ERR_CORRECTED: Corrected Error - Indicates that an ECC
> + * corrected error was detected
> + * @HW_EVENT_ERR_UNCORRECTED: Uncorrected Error - Indicates an error that
> + * can't be corrected by ECC, but it is not
> + * factal (maybe it is on an unused memory area,
fatal
> + * or the memory controller could recover from
> + * it for example, by re-trying the operation).
> + * @HW_EVENT_ERR_FATAL: Fatal Error - Uncorrected error that could not
> + * be recovered.
> + */
> +enum hw_event_mc_err_type {
> + HW_EVENT_ERR_CORRECTED,
> + HW_EVENT_ERR_UNCORRECTED,
> + HW_EVENT_ERR_FATAL,
Need a terminating elem here:
HW_EVENT_ERR_NUM,
> +};
> +
> +/**
> * enum mem_type - memory types. For a more detailed reference, please see
> * http://en.wikipedia.org/wiki/DRAM
> *
> @@ -308,7 +327,69 @@ enum scrub_type {
> * PS - I enjoyed writing all that about as much as you enjoyed reading it.
> */
>
> -/* FIXME: add a per-dimm ce error count */
> +/**
> + * enum edac_mc_layer - memory controller hierarchy layer
> + *
> + * @EDAC_MC_LAYER_BRANCH: memory layer is named "branch"
> + * @EDAC_MC_LAYER_CHANNEL: memory layer is named "channel"
> + * @EDAC_MC_LAYER_SLOT: memory layer is named "slot"
> + * @EDAC_MC_LAYER_CHIP_SELECT: memory layer is named "chip select"
> + *
> + * This enum is used by the drivers to tell edac_mc_sysfs what name should
> + * be used when describing a memory stick location.
> + */
> +enum edac_mc_layer_type {
> + EDAC_MC_LAYER_BRANCH,
> + EDAC_MC_LAYER_CHANNEL,
> + EDAC_MC_LAYER_SLOT,
> + EDAC_MC_LAYER_CHIP_SELECT,
ditto.
> +};
> +
> +/**
> + * struct edac_mc_layer - describes the memory controller hierarchy
> + * @layer: layer type
> + * @size:maximum size of the layer
> + * @is_csrow: This layer is part of the "csrow" when old API
> + * compatibility mode is enabled. Otherwise, it is
> + * a channel
> + */
> +struct edac_mc_layer {
> + enum edac_mc_layer_type type;
> + unsigned size;
> + bool is_csrow;
> +};
Huh, why do you need is_csrow? Can't do
type = EDAC_MC_LAYER_CHIP_SELECT;
?
> +
> +/*
> + * Maximum number of layers used by the memory controller to uniquelly
uniquely
> + * identify a single memory stick.
> + * NOTE: incrementing it would require changes at edac_mc_handle_error()
> + * and at the routines at edac_mc_sysfs that create layers
Maybe add their names here with a regex or so: edac_mc_blabla_*
?
> + */
> +#define EDAC_MAX_LAYERS 3
> +
> +/*
> + * A loop could be used here to make it more generic, but, as we only have
> + * 3 layers, this is a little faster. By design, layers can never be 0 or
> + * more than 3. If that ever happens, a NULL is returned, causing an OOPS
> + * during the memory allocation routine, with would point to the developer
> + * that he's doing something wrong.
> + */
> +#define GET_POS(layers, var, nlayers, lay0, lay1, lay2) ({ \
This is returning size per layers so it cannot be GET_POS(), AFAICT.
EDAC_GET_SIZE or similar maybe?
> + typeof(var) __p; \
> + if ((nlayers) == 1) \
> + __p = &var[lay0]; \
> + else if ((nlayers) == 2) \
> + __p = &var[(lay1) + ((layers[1]).size * (lay0))]; \
> + else if ((nlayers) == 3) \
> + __p = &var[(lay2) + ((layers[2]).size * ((lay1) + \
> + ((layers[1]).size * (lay0))))]; \
> + else \
> + __p = NULL; \
> + __p; \
> +})
--
Regards/Gruss,
Boris.
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
GM: Alberto Bozzo
Reg: Dornach, Landkreis Muenchen
HRB Nr. 43632 WEEE Registernr: 129 19551
next prev parent reply other threads:[~2012-04-23 17:50 UTC|newest]
Thread overview: 161+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-29 16:45 [PATCH 00/13] Convert EDAC internal strutures to support all types of Memory Controllers Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 01/13] edac: Create a dimm struct and move the labels into it Mauro Carvalho Chehab
2012-03-30 10:50 ` Borislav Petkov
2012-03-30 13:26 ` Mauro Carvalho Chehab
2012-03-30 15:38 ` Borislav Petkov
2012-04-16 8:41 ` Mauro Carvalho Chehab
2012-04-16 11:02 ` Borislav Petkov
2012-04-16 11:44 ` Mauro Carvalho Chehab
2012-04-16 13:21 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 02/13] edac: move dimm properties to struct memset_info Mauro Carvalho Chehab
2012-03-30 13:10 ` Borislav Petkov
2012-03-30 13:22 ` Mauro Carvalho Chehab
2012-03-30 17:03 ` Borislav Petkov
2012-04-16 8:56 ` Mauro Carvalho Chehab
2012-04-16 13:31 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 03/13] edac: Don't initialize csrow's first_page & friends when not needed Mauro Carvalho Chehab
2012-04-02 12:33 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 04/13] edac: move nr_pages to dimm struct Mauro Carvalho Chehab
2012-04-02 13:18 ` Borislav Petkov
2012-03-29 16:45 ` [PATCH 05/13] edac: Fix core support for MC's that see DIMMS instead of ranks Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 06/13] edac: Initialize the dimm label with the known information Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 07/13] edac: Cleanup the logs for i7core and sb edac drivers Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 08/13] i5400_edac: improve debug messages to better represent the filled memory Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 09/13] events/hw_event: Create a Hardware Events Report Mecanism (HERM) Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 10/13] i5000_edac: Fix the logic that retrieves memory information Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 11/13] e752x_edac: provide more info about how DIMMS/ranks are mapped Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 12/13] edac: Rename the parent dev to pdev Mauro Carvalho Chehab
2012-03-29 16:45 ` [PATCH 13/13] edac: use Documentation-nano format for some data structs Mauro Carvalho Chehab
2012-03-29 20:46 ` [PATCH 00/13] Convert EDAC internal strutures to support all types of Memory Controllers Aristeu Rozanski Filho
2012-04-02 13:59 ` Borislav Petkov
2012-04-16 12:58 ` Mauro Carvalho Chehab
2012-04-16 14:06 ` Borislav Petkov
2012-04-16 20:12 ` [EDAC PATCH v13 0/7] Convert EDAC core to work with non-csrow-based memory controllers Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 1/7] edac: Create a dimm struct and move the labels into it Mauro Carvalho Chehab
2012-04-26 14:26 ` Borislav Petkov
2012-04-16 20:12 ` [EDAC PATCH v13 3/7] edac: Don't initialize csrow's first_page & friends when not needed Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 4/7] edac: move nr_pages to dimm struct Mauro Carvalho Chehab
2012-04-17 18:48 ` Borislav Petkov
2012-04-17 19:28 ` Mauro Carvalho Chehab
2012-04-17 21:40 ` Borislav Petkov
2012-04-18 12:58 ` Mauro Carvalho Chehab
2012-04-18 17:53 ` [PATCH] " Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 5/7] edac: rewrite edac_align_ptr() Mauro Carvalho Chehab
2012-04-18 14:06 ` Borislav Petkov
2012-04-18 15:25 ` Borislav Petkov
2012-04-18 18:15 ` Mauro Carvalho Chehab
2012-04-18 18:19 ` [PATCH] " Mauro Carvalho Chehab
2012-04-23 14:05 ` Borislav Petkov
2012-04-23 15:19 ` Mauro Carvalho Chehab
2012-04-23 15:26 ` Mauro Carvalho Chehab
2012-04-16 20:12 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Mauro Carvalho Chehab
2012-04-23 17:49 ` Borislav Petkov [this message]
2012-04-23 18:30 ` Mauro Carvalho Chehab
2012-04-23 18:56 ` Mauro Carvalho Chehab
2012-04-23 19:19 ` [PATCH] edac.h: Add generic layers for describing a memory location Mauro Carvalho Chehab
2012-04-23 20:07 ` Mauro Carvalho Chehab
2012-04-24 10:46 ` Borislav Petkov
2012-04-24 10:40 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Borislav Petkov
2012-04-24 11:46 ` Mauro Carvalho Chehab
2012-04-24 12:42 ` Mauro Carvalho Chehab
2012-04-24 12:49 ` [PATCH] edac.h: Add generic layers for describing a memory location Mauro Carvalho Chehab
2012-04-24 13:09 ` Borislav Petkov
2012-04-24 13:22 ` Mauro Carvalho Chehab
2012-04-24 13:38 ` Borislav Petkov
2012-04-24 16:39 ` Mauro Carvalho Chehab
2012-04-24 16:49 ` Borislav Petkov
2012-04-24 17:38 ` Mauro Carvalho Chehab
[not found] ` <1335291342-14922-1-git-send-email-mchehab@redhat.com>
2012-04-24 18:15 ` [PATCH EDACv16 2/2] amd64_edac: convert driver to use the new edac ABI Mauro Carvalho Chehab
2012-04-27 10:42 ` Mauro Carvalho Chehab
2012-04-27 13:33 ` [PATCH EDACv16 1/2] edac: Change internal representation to work with layers Borislav Petkov
2012-04-27 14:11 ` Joe Perches
2012-04-27 15:12 ` Borislav Petkov
2012-04-27 16:07 ` Mauro Carvalho Chehab
2012-04-28 8:52 ` Borislav Petkov
2012-04-28 20:38 ` Joe Perches
2012-04-29 14:25 ` Mauro Carvalho Chehab
2012-04-29 15:11 ` Mauro Carvalho Chehab
2012-04-29 16:03 ` Joe Perches
2012-04-29 17:18 ` Mauro Carvalho Chehab
2012-04-29 16:20 ` Mauro Carvalho Chehab
2012-04-29 16:43 ` Joe Perches
2012-04-29 17:39 ` Mauro Carvalho Chehab
2012-04-30 7:47 ` Borislav Petkov
2012-04-30 11:09 ` Mauro Carvalho Chehab
2012-04-30 11:15 ` Borislav Petkov
2012-04-30 11:46 ` Mauro Carvalho Chehab
2012-04-27 15:36 ` Mauro Carvalho Chehab
2012-04-28 9:05 ` Borislav Petkov
2012-04-29 13:49 ` Mauro Carvalho Chehab
2012-04-30 8:15 ` Borislav Petkov
2012-04-30 10:58 ` Mauro Carvalho Chehab
2012-04-30 11:11 ` Borislav Petkov
2012-04-30 11:45 ` Mauro Carvalho Chehab
2012-04-30 12:38 ` Borislav Petkov
2012-04-30 13:00 ` Mauro Carvalho Chehab
2012-04-30 13:53 ` Mauro Carvalho Chehab
2012-04-30 15:02 ` [PATCH v2] edac_mc: Cleanup per-dimm_info debug messages Mauro Carvalho Chehab
2012-04-30 15:10 ` Mauro Carvalho Chehab
2012-04-30 15:20 ` Borislav Petkov
2012-04-30 15:33 ` Mauro Carvalho Chehab
2012-04-30 16:16 ` Joe Perches
2012-04-30 16:47 ` Mauro Carvalho Chehab
2012-04-30 16:44 ` [PATCHv3] " Mauro Carvalho Chehab
2012-04-30 11:37 ` [PATCH EDACv16 1/2] edac: Change internal representation to work with layers Mauro Carvalho Chehab
2012-04-27 17:52 ` Mauro Carvalho Chehab
2012-04-28 9:16 ` Borislav Petkov
2012-04-28 17:07 ` Joe Perches
2012-04-29 14:02 ` Mauro Carvalho Chehab
2012-04-29 14:16 ` Mauro Carvalho Chehab
2012-04-30 7:59 ` Borislav Petkov
2012-04-30 11:23 ` Mauro Carvalho Chehab
2012-04-30 12:51 ` Borislav Petkov
2012-04-24 12:55 ` [EDAC PATCH v13 6/7] edac.h: Prepare to handle with generic layers Borislav Petkov
2012-04-24 13:11 ` Mauro Carvalho Chehab
2012-04-24 13:32 ` Borislav Petkov
2012-04-24 14:24 ` Mauro Carvalho Chehab
2012-04-24 16:27 ` Borislav Petkov
2012-04-24 17:24 ` Mauro Carvalho Chehab
2012-04-25 17:19 ` Borislav Petkov
2012-04-25 17:47 ` Mauro Carvalho Chehab
2012-04-25 18:32 ` Luck, Tony
2012-04-25 18:44 ` Mauro Carvalho Chehab
2012-04-26 14:11 ` Borislav Petkov
2012-04-26 14:25 ` Mauro Carvalho Chehab
2012-04-26 14:59 ` Mauro Carvalho Chehab
2012-04-25 17:55 ` Luck, Tony
2012-04-24 17:31 ` Luck, Tony
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 00/26] Use the new EDAC kernel ABI on drivers Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 01/26] amd64_edac: convert driver to use the new edac ABI Mauro Carvalho Chehab
2012-05-07 14:31 ` Borislav Petkov
2012-05-07 16:12 ` Mauro Carvalho Chehab
2012-05-07 16:17 ` Borislav Petkov
2012-05-07 16:59 ` Mauro Carvalho Chehab
2012-05-07 19:49 ` Borislav Petkov
2012-05-07 16:24 ` Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 02/26] amd76x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 03/26] cell_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 04/26] cpc925_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 05/26] e752x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 06/26] e7xxx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 07/26] i3000_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 08/26] i3200_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 09/26] i5000_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 10/26] i5100_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 11/26] i5400_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 12/26] i7300_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 13/26] i7core_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 14/26] i82443bxgx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 15/26] i82860_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 16/26] i82875p_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 17/26] i82975x_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 18/26] mpc85xx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 19/26] mv64x60_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 20/26] pasemi_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 21/26] ppc4xx_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 22/26] r82600_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 23/26] sb_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 24/26] tile_edac: " Mauro Carvalho Chehab
2012-04-26 19:47 ` Chris Metcalf
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 25/26] x38_edac: " Mauro Carvalho Chehab
2012-04-16 20:21 ` [EDAC_ABI PATCH v13 26/26] edac: Remove the legacy EDAC ABI Mauro Carvalho Chehab
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120423174955.GH6147@aftab.osrc.amd.com \
--to=bp@amd64.org \
--cc=linux-edac@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mchehab@redhat.com \
--cc=norsk5@yahoo.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).