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Date: Fri, 8 May 2009 07:01:01 -0300
From: Mauro Carvalho Chehab <mchehab@...hat.com>
To: Borislav Petkov <borislav.petkov@....com>
Cc: <akpm@...ux-foundation.org>, <greg@...ah.com>, <mingo@...e.hu>,
<norsk5@...oo.com>, <tglx@...utronix.de>, <hpa@...or.com>,
<aris@...hat.com>, edt@....ca, <linux-kernel@...r.kernel.org>,
Doug Thompson <dougthompson@...ssion.com>,
Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH 03/21] amd64_edac: add debugging/testing code
Em Thu, 7 May 2009 15:49:25 +0200
Borislav Petkov <borislav.petkov@....com> escreveu:
> From: Doug Thompson <dougthompson@...ssion.com>
>
> This is for dumping different registers and testing the address mapping
> logic using the ECC syndromes.
>
> Borislav: split sysfs attrs per file
>
> Signed-off-by: Doug Thompson <dougthompson@...ssion.com>
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@...hat.com>
> ---
> drivers/edac/amd64_edac_dbg.c | 288 +++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 288 insertions(+), 0 deletions(-)
> create mode 100644 drivers/edac/amd64_edac_dbg.c
>
> diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c
> new file mode 100644
> index 0000000..3741af9
> --- /dev/null
> +++ b/drivers/edac/amd64_edac_dbg.c
> @@ -0,0 +1,288 @@
> +#include "amd64_edac.h"
> +
> +/*
> + * amd64_nbea_store
> + *
> + * Accept a hex value and store it into the virutal error
> + * register file, field: nbeal and nbeah
> + *
> + * Assume virtual error values have already been set for:
> + * NBSL, NBSH and NBCFG
> + *
> + * Then proceed to map the error values to a:
> + * MC, CSROW and CHANNEL
> + */
> +static ssize_t amd64_nbea_store(struct mem_ctl_info *mci,
> + const char *data, size_t count)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + unsigned long long value;
> + int rc;
> +
> + rc = strict_strtoull(data, 16, &value);
> + if (rc != -EINVAL) {
> + debugf0("%s() received NBEA= 0x%llx\n", __func__, value);
> +
> + /* place the value into the virtual error packet */
> + pvt->ctl_error_info.nbeal = (u32) value;
> + value >>= 32;
> + pvt->ctl_error_info.nbeah = (u32) value;
> +
> + /* Process the Mapping request */
> + /* TODO: Add race preventation */
> + amd64_process_error_info(mci, &pvt->ctl_error_info, 1);
> +
> + return count;
> + }
> + return rc;
> +}
> +
> +/*
> + * amd64_nbea_show
> + *
> + * display back what the last NBEA address was written
> + */
> +static ssize_t amd64_nbea_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + u64 value;
> +
> + value = pvt->ctl_error_info.nbeah;
> + value <<= 32;
> + value |= pvt->ctl_error_info.nbeal;
> +
> + return sprintf(data, "%llx\n", value);
> +}
> +
> +/*
> + * amd64_nbsl_store
> + *
> + * accept and store the NBSL value user desires
> + */
> +static ssize_t amd64_nbsl_store(struct mem_ctl_info *mci,
> + const char *data, size_t count)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + unsigned long value;
> + int rc;
> +
> + rc = strict_strtoul(data, 16, &value);
> + if (rc != -EINVAL) {
> + debugf0("%s() received NBSL= 0x%lx\n", __func__, value);
> +
> + /* place the NBSL value into the virtual error packet */
> + pvt->ctl_error_info.nbsl = (u32) value;
> +
> + return count;
> + }
> + return rc;
> +}
> +
> +/*
> + * amd64_nbsl_show
> + *
> + * display back what the last NBSL value written
> + */
> +static ssize_t amd64_nbsl_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + u32 value;
> +
> + value = pvt->ctl_error_info.nbsl;
> +
> + return sprintf(data, "%x\n", value);
> +}
> +
> +/*
> + * amd64_nbsh_store
> + *
> + * accept and store the NBSH value user desires
> + */
> +static ssize_t amd64_nbsh_store(struct mem_ctl_info *mci,
> + const char *data, size_t count)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + unsigned long value;
> + int rc;
> +
> + rc = strict_strtoul(data, 16, &value);
> + if (rc != -EINVAL) {
> + debugf0("%s() received NBSL= 0x%lx\n", __func__, value);
> +
> + /* place the NBSL value into the virtual error packet */
> + pvt->ctl_error_info.nbsh = (u32) value;
> +
> + return count;
> + }
> + return rc;
> +}
> +
> +/*
> + * amd64_nbsh_show
> + *
> + * display back what the last NBSL value written
> + */
> +static ssize_t amd64_nbsh_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + u32 value;
> +
> + value = pvt->ctl_error_info.nbsh;
> +
> + return sprintf(data, "%x\n", value);
> +}
> +
> +/*
> + * amd64_nbcfg_store
> + *
> + * accept and store the NBSL value user desires
> + */
> +static ssize_t amd64_nbcfg_store(struct mem_ctl_info *mci,
> + const char *data, size_t count)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> + unsigned long value;
> + int rc;
> +
> + rc = strict_strtoul(data, 16, &value);
> + if (rc != -EINVAL) {
> + debugf0("%s() received NBCFG= 0x%lx\n", __func__, value);
> +
> + /* place the NBSL value into the virtual error packet */
> + pvt->ctl_error_info.nbcfg = (u32) value;
> +
> + return count;
> + }
> + return rc;
> +}
> +
> +/*
> + * Various show routines for the controls of a MCI
> + */
> +static ssize_t amd64_nbcfg_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> +
> + return sprintf(data, "%x\n",
> + pvt->ctl_error_info.nbcfg);
> +}
> +
> +
> +static ssize_t amd64_dhar_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> +
> + return sprintf(data, "%x\n", pvt->dhar);
> +}
> +
> +
> +static ssize_t amd64_dbam_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> +
> + return sprintf(data, "%x\n", pvt->dbam0);
> +}
> +
> +
> +static ssize_t amd64_topmem_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> +
> + return sprintf(data, "%llx\n", pvt->top_mem);
> +}
> +
> +
> +static ssize_t amd64_topmem2_show(struct mem_ctl_info *mci, char *data)
> +{
> + struct amd64_pvt *pvt = mci->pvt_info;
> +
> + return sprintf(data, "%llx\n", pvt->top_mem2);
> +}
> +
> +static ssize_t amd64_hole_show(struct mem_ctl_info *mci, char *data)
> +{
> + u64 hole_base = 0;
> + u64 hole_offset = 0;
> + u64 hole_size = 0;
> +
> + amd64_get_dram_hole_info(mci, &hole_base, &hole_offset, &hole_size);
> +
> + return sprintf(data, "%llx %llx %llx\n", hole_base, hole_offset,
> + hole_size);
> +}
> +
> +struct mcidev_sysfs_attribute amd64_dbg_attrs[] = {
> +
> + {
> + .attr = {
> + .name = "zctl_nbea",
> + .mode = (S_IRUGO | S_IWUSR)
> + },
> + .show = amd64_nbea_show,
> + .store = amd64_nbea_store,
> + },
> + {
> + .attr = {
> + .name = "zctl_nbsl",
> + .mode = (S_IRUGO | S_IWUSR)
> + },
> + .show = amd64_nbsl_show,
> + .store = amd64_nbsl_store,
> + },
> + {
> + .attr = {
> + .name = "zctl_nbsh",
> + .mode = (S_IRUGO | S_IWUSR)
> + },
> + .show = amd64_nbsh_show,
> + .store = amd64_nbsh_store,
> + },
> + {
> + .attr = {
> + .name = "zctl_nbcfg",
> + .mode = (S_IRUGO | S_IWUSR)
> + },
> + .show = amd64_nbcfg_show,
> + .store = amd64_nbcfg_store,
> + },
> + {
> + .attr = {
> + .name = "zhw_dhar",
> + .mode = (S_IRUGO)
> + },
> + .show = amd64_dhar_show,
> + .store = NULL,
> + },
> + {
> + .attr = {
> + .name = "zhw_dbam",
> + .mode = (S_IRUGO)
> + },
> + .show = amd64_dbam_show,
> + .store = NULL,
> + },
> + {
> + .attr = {
> + .name = "zhw_topmem",
> + .mode = (S_IRUGO)
> + },
> + .show = amd64_topmem_show,
> + .store = NULL,
> + },
> + {
> + .attr = {
> + .name = "zhw_topmem2",
> + .mode = (S_IRUGO)
> + },
> + .show = amd64_topmem2_show,
> + .store = NULL,
> + },
> + {
> + .attr = {
> + .name = "zhw_hole",
> + .mode = (S_IRUGO)
> + },
> + .show = amd64_hole_show,
> + .store = NULL,
> + },
> +};
--
Cheers,
Mauro
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