diff options
author | Toshi Kani <toshi.kani@hpe.com> | 2017-06-29 20:41:30 -0600 |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2017-07-02 09:56:37 -0700 |
commit | 807900395efebf9276178eb6157959f2e81fe013 (patch) | |
tree | 5b7954f7bb3e2530fdbfb87a6ecd8055eb98cd00 /drivers/acpi | |
parent | 759d6a9641d7f52f9311aae4f2d90058adad3ac2 (diff) | |
download | linux-807900395efebf9276178eb6157959f2e81fe013.tar.bz2 |
acpi/nfit: Issue Start ARS to retrieve existing records
ACPI 6.2 defines in section 9.20.7.2 that the OSPM may call a Start
ARS with Flags Bit [1] set upon receiving the 0x81 notification.
Upon receiving the notification, the OSPM may decide to issue
a Start ARS with Flags Bit [1] set to prepare for the retrieval
of existing records and issue the Query ARS Status function to
retrieve the records.
Add support to call a Start ARS from acpi_nfit_uc_error_notify()
with ND_ARS_RETURN_PREV_DATA set when HW_ERROR_SCRUB_ON is not set.
Link: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/nfit/core.c | 13 | ||||
-rw-r--r-- | drivers/acpi/nfit/mce.c | 2 | ||||
-rw-r--r-- | drivers/acpi/nfit/nfit.h | 3 |
3 files changed, 13 insertions, 5 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 4f6939b51e90..1f6bc5065b0d 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1044,7 +1044,7 @@ static ssize_t scrub_store(struct device *dev, if (nd_desc) { struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc); - rc = acpi_nfit_ars_rescan(acpi_desc); + rc = acpi_nfit_ars_rescan(acpi_desc, 0); } device_unlock(dev); if (rc) @@ -2137,6 +2137,7 @@ static int ars_start(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa memset(&ars_start, 0, sizeof(ars_start)); ars_start.address = spa->address; ars_start.length = spa->length; + ars_start.flags = acpi_desc->ars_start_flags; if (nfit_spa_type(spa) == NFIT_SPA_PM) ars_start.type = ND_ARS_PERSISTENT; else if (nfit_spa_type(spa) == NFIT_SPA_VOLATILE) @@ -2163,6 +2164,7 @@ static int ars_continue(struct acpi_nfit_desc *acpi_desc) ars_start.address = ars_status->restart_address; ars_start.length = ars_status->restart_length; ars_start.type = ars_status->type; + ars_start.flags = acpi_desc->ars_start_flags; rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_ARS_START, &ars_start, sizeof(ars_start), &cmd_rc); if (rc < 0) @@ -2684,6 +2686,7 @@ static void acpi_nfit_scrub(struct work_struct *work) list_for_each_entry(nfit_spa, &acpi_desc->spas, list) acpi_nfit_async_scrub(acpi_desc, nfit_spa); acpi_desc->scrub_count++; + acpi_desc->ars_start_flags = 0; if (acpi_desc->scrub_count_state) sysfs_notify_dirent(acpi_desc->scrub_count_state); mutex_unlock(&acpi_desc->init_mutex); @@ -2702,6 +2705,7 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc) return rc; } + acpi_desc->ars_start_flags = 0; if (!acpi_desc->cancel) queue_work(nfit_wq, &acpi_desc->work); return 0; @@ -2906,7 +2910,7 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc, return 0; } -int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc) +int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc, u8 flags) { struct device *dev = acpi_desc->dev; struct nfit_spa *nfit_spa; @@ -2928,6 +2932,7 @@ int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc) nfit_spa->ars_required = 1; } + acpi_desc->ars_start_flags = flags; queue_work(nfit_wq, &acpi_desc->work); dev_dbg(dev, "%s: ars_scan triggered\n", __func__); mutex_unlock(&acpi_desc->init_mutex); @@ -3104,8 +3109,10 @@ static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle) static void acpi_nfit_uc_error_notify(struct device *dev, acpi_handle handle) { struct acpi_nfit_desc *acpi_desc = dev_get_drvdata(dev); + u8 flags = (acpi_desc->scrub_mode == HW_ERROR_SCRUB_ON) ? + 0 : ND_ARS_RETURN_PREV_DATA; - acpi_nfit_ars_rescan(acpi_desc); + acpi_nfit_ars_rescan(acpi_desc, flags); } void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event) diff --git a/drivers/acpi/nfit/mce.c b/drivers/acpi/nfit/mce.c index fd86bec98dea..feeb95d574fa 100644 --- a/drivers/acpi/nfit/mce.c +++ b/drivers/acpi/nfit/mce.c @@ -79,7 +79,7 @@ static int nfit_handle_mce(struct notifier_block *nb, unsigned long val, * already in progress, just let that be the last * authoritative one */ - acpi_nfit_ars_rescan(acpi_desc); + acpi_nfit_ars_rescan(acpi_desc, 0); } break; } diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h index e3da60b2d686..54292db61262 100644 --- a/drivers/acpi/nfit/nfit.h +++ b/drivers/acpi/nfit/nfit.h @@ -155,6 +155,7 @@ struct acpi_nfit_desc { struct list_head idts; struct nvdimm_bus *nvdimm_bus; struct device *dev; + u8 ars_start_flags; struct nd_cmd_ars_status *ars_status; size_t ars_status_size; struct work_struct work; @@ -207,7 +208,7 @@ struct nfit_blk { extern struct list_head acpi_descs; extern struct mutex acpi_desc_lock; -int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc); +int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc, u8 flags); #ifdef CONFIG_X86_MCE void nfit_mce_register(void); |