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libnvdimm for 4.20

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* Improve the efficiency and performance of reading nvdimm-namespace
   labels. Reduce the amount of label data read at driver load time by a
   few orders of magnitude. Reduce heavyweight call-outs to
   platform-firmware routines.
 
 * Handle media errors located in the 'struct page' array stored on a
   persistent memory namespace. Let the kernel clear these errors rather
   than an awkward userspace workaround.
 
 * Fix Address Range Scrub (ARS) completion tracking. Correct occasions
   where the kernel indicates completion of ARS before submission.
 
 * Fix asynchronous device registration reference counting.
 
 * Add support for reporting an nvdimm dirty-shutdown-count via sysfs.
 
 * Fix various small libnvdimm core and uapi issues.
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Merge tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:

 - Improve the efficiency and performance of reading nvdimm-namespace
   labels. Reduce the amount of label data read at driver load time by a
   few orders of magnitude. Reduce heavyweight call-outs to
   platform-firmware routines.

 - Handle media errors located in the 'struct page' array stored on a
   persistent memory namespace. Let the kernel clear these errors rather
   than an awkward userspace workaround.

 - Fix Address Range Scrub (ARS) completion tracking. Correct occasions
   where the kernel indicates completion of ARS before submission.

 - Fix asynchronous device registration reference counting.

 - Add support for reporting an nvdimm dirty-shutdown-count via sysfs.

 - Fix various small libnvdimm core and uapi issues.

* tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
  acpi, nfit: Further restrict userspace ARS start requests
  acpi, nfit: Fix Address Range Scrub completion tracking
  UAPI: ndctl: Remove use of PAGE_SIZE
  UAPI: ndctl: Fix g++-unsupported initialisation in headers
  tools/testing/nvdimm: Populate dirty shutdown data
  acpi, nfit: Collect shutdown status
  acpi, nfit: Introduce nfit_mem flags
  libnvdimm, label: Fix sparse warning
  nvdimm: Use namespace index data to reduce number of label reads needed
  nvdimm: Split label init out from the logic for getting config data
  nvdimm: Remove empty if statement
  nvdimm: Clarify comment in sizeof_namespace_index
  nvdimm: Sanity check labeloff
  libnvdimm, dimm: Maximize label transfer size
  libnvdimm, pmem: Fix badblocks population for 'raw' namespaces
  libnvdimm, namespace: Drop the repeat assignment for variable dev->parent
  libnvdimm, region: Fail badblocks listing for inactive regions
  libnvdimm, pfn: during init, clear errors in the metadata area
  libnvdimm: Set device node in nd_device_register
  libnvdimm: Hold reference on parent while scheduling async init
  ...
This commit is contained in:
Linus Torvalds 2018-10-25 06:31:56 -07:00
commit 6078e07dcf
20 changed files with 563 additions and 216 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

295
drivers/acpi/nfit/core.c
View File

@ -25,6 +25,7 @@
#include <asm/cacheflush.h>
#include <acpi/nfit.h>
#include "nfit.h"
#include "intel.h"
/*
* For readq() and writeq() on 32-bit builds, the hi-lo, lo-hi order is
@ -191,18 +192,20 @@ static int xlat_nvdimm_status(struct nvdimm *nvdimm, void *buf, unsigned int cmd
* In the _LSI, _LSR, _LSW case the locked status is
* communicated via the read/write commands
*/
if (nfit_mem->has_lsr)
if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags))
break;
if (status >> 16 & ND_CONFIG_LOCKED)
return -EACCES;
break;
case ND_CMD_GET_CONFIG_DATA:
if (nfit_mem->has_lsr && status == ACPI_LABELS_LOCKED)
if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags)
&& status == ACPI_LABELS_LOCKED)
return -EACCES;
break;
case ND_CMD_SET_CONFIG_DATA:
if (nfit_mem->has_lsw && status == ACPI_LABELS_LOCKED)
if (test_bit(NFIT_MEM_LSW, &nfit_mem->flags)
&& status == ACPI_LABELS_LOCKED)
return -EACCES;
break;
default:
@ -480,14 +483,16 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
min_t(u32, 256, in_buf.buffer.length), true);
/* call the BIOS, prefer the named methods over _DSM if available */
if (nvdimm && cmd == ND_CMD_GET_CONFIG_SIZE && nfit_mem->has_lsr)
if (nvdimm && cmd == ND_CMD_GET_CONFIG_SIZE
&& test_bit(NFIT_MEM_LSR, &nfit_mem->flags))
out_obj = acpi_label_info(handle);
else if (nvdimm && cmd == ND_CMD_GET_CONFIG_DATA && nfit_mem->has_lsr) {
else if (nvdimm && cmd == ND_CMD_GET_CONFIG_DATA
&& test_bit(NFIT_MEM_LSR, &nfit_mem->flags)) {
struct nd_cmd_get_config_data_hdr *p = buf;
out_obj = acpi_label_read(handle, p->in_offset, p->in_length);
} else if (nvdimm && cmd == ND_CMD_SET_CONFIG_DATA
&& nfit_mem->has_lsw) {
&& test_bit(NFIT_MEM_LSW, &nfit_mem->flags)) {
struct nd_cmd_set_config_hdr *p = buf;
out_obj = acpi_label_write(handle, p->in_offset, p->in_length,
@ -1547,7 +1552,12 @@ static DEVICE_ATTR_RO(dsm_mask);
static ssize_t flags_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
u16 flags = to_nfit_memdev(dev)->flags;
struct nvdimm *nvdimm = to_nvdimm(dev);
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
u16 flags = __to_nfit_memdev(nfit_mem)->flags;
if (test_bit(NFIT_MEM_DIRTY, &nfit_mem->flags))
flags |= ACPI_NFIT_MEM_FLUSH_FAILED;
return sprintf(buf, "%s%s%s%s%s%s%s\n",
flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save_fail " : "",
@ -1578,6 +1588,16 @@ static ssize_t id_show(struct device *dev,
}
static DEVICE_ATTR_RO(id);
static ssize_t dirty_shutdown_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvdimm *nvdimm = to_nvdimm(dev);
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
return sprintf(buf, "%d\n", nfit_mem->dirty_shutdown);
}
static DEVICE_ATTR_RO(dirty_shutdown);
static struct attribute *acpi_nfit_dimm_attributes[] = {
&dev_attr_handle.attr,
&dev_attr_phys_id.attr,
@ -1595,6 +1615,7 @@ static struct attribute *acpi_nfit_dimm_attributes[] = {
&dev_attr_id.attr,
&dev_attr_family.attr,
&dev_attr_dsm_mask.attr,
&dev_attr_dirty_shutdown.attr,
NULL,
};
@ -1603,6 +1624,7 @@ static umode_t acpi_nfit_dimm_attr_visible(struct kobject *kobj,
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvdimm *nvdimm = to_nvdimm(dev);
struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
if (!to_nfit_dcr(dev)) {
/* Without a dcr only the memdev attributes can be surfaced */
@ -1616,6 +1638,11 @@ static umode_t acpi_nfit_dimm_attr_visible(struct kobject *kobj,
if (a == &dev_attr_format1.attr && num_nvdimm_formats(nvdimm) <= 1)
return 0;
if (!test_bit(NFIT_MEM_DIRTY_COUNT, &nfit_mem->flags)
&& a == &dev_attr_dirty_shutdown.attr)
return 0;
return a->mode;
}
@ -1694,6 +1721,56 @@ static bool acpi_nvdimm_has_method(struct acpi_device *adev, char *method)
return false;
}
__weak void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem)
{
struct nd_intel_smart smart = { 0 };
union acpi_object in_buf = {
.type = ACPI_TYPE_BUFFER,
.buffer.pointer = (char *) &smart,
.buffer.length = sizeof(smart),
};
union acpi_object in_obj = {
.type = ACPI_TYPE_PACKAGE,
.package.count = 1,
.package.elements = &in_buf,
};
const u8 func = ND_INTEL_SMART;
const guid_t *guid = to_nfit_uuid(nfit_mem->family);
u8 revid = nfit_dsm_revid(nfit_mem->family, func);
struct acpi_device *adev = nfit_mem->adev;
acpi_handle handle = adev->handle;
union acpi_object *out_obj;
if ((nfit_mem->dsm_mask & (1 << func)) == 0)
return;
out_obj = acpi_evaluate_dsm(handle, guid, revid, func, &in_obj);
if (!out_obj)
return;
if (smart.flags & ND_INTEL_SMART_SHUTDOWN_VALID) {
if (smart.shutdown_state)
set_bit(NFIT_MEM_DIRTY, &nfit_mem->flags);
}
if (smart.flags & ND_INTEL_SMART_SHUTDOWN_COUNT_VALID) {
set_bit(NFIT_MEM_DIRTY_COUNT, &nfit_mem->flags);
nfit_mem->dirty_shutdown = smart.shutdown_count;
}
ACPI_FREE(out_obj);
}
static void populate_shutdown_status(struct nfit_mem *nfit_mem)
{
/*
* For DIMMs that provide a dynamic facility to retrieve a
* dirty-shutdown status and/or a dirty-shutdown count, cache
* these values in nfit_mem.
*/
if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
nfit_intel_shutdown_status(nfit_mem);
}
static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
struct nfit_mem *nfit_mem, u32 device_handle)
{
@ -1708,8 +1785,11 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
nfit_mem->dsm_mask = acpi_desc->dimm_cmd_force_en;
nfit_mem->family = NVDIMM_FAMILY_INTEL;
adev = to_acpi_dev(acpi_desc);
if (!adev)
if (!adev) {
/* unit test case */
populate_shutdown_status(nfit_mem);
return 0;
}
adev_dimm = acpi_find_child_device(adev, device_handle, false);
nfit_mem->adev = adev_dimm;
@ -1784,14 +1864,17 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
if (acpi_nvdimm_has_method(adev_dimm, "_LSI")
&& acpi_nvdimm_has_method(adev_dimm, "_LSR")) {
dev_dbg(dev, "%s: has _LSR\n", dev_name(&adev_dimm->dev));
nfit_mem->has_lsr = true;
set_bit(NFIT_MEM_LSR, &nfit_mem->flags);
}
if (nfit_mem->has_lsr && acpi_nvdimm_has_method(adev_dimm, "_LSW")) {
if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags)
&& acpi_nvdimm_has_method(adev_dimm, "_LSW")) {
dev_dbg(dev, "%s: has _LSW\n", dev_name(&adev_dimm->dev));
nfit_mem->has_lsw = true;
set_bit(NFIT_MEM_LSW, &nfit_mem->flags);
}
populate_shutdown_status(nfit_mem);
return 0;
}
@ -1878,11 +1961,11 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
cmd_mask |= nfit_mem->dsm_mask & NVDIMM_STANDARD_CMDMASK;
}
if (nfit_mem->has_lsr) {
if (test_bit(NFIT_MEM_LSR, &nfit_mem->flags)) {
set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);
set_bit(ND_CMD_GET_CONFIG_DATA, &cmd_mask);
}
if (nfit_mem->has_lsw)
if (test_bit(NFIT_MEM_LSW, &nfit_mem->flags))
set_bit(ND_CMD_SET_CONFIG_DATA, &cmd_mask);
flush = nfit_mem->nfit_flush ? nfit_mem->nfit_flush->flush
@ -2466,7 +2549,8 @@ static int ars_get_cap(struct acpi_nfit_desc *acpi_desc,
return cmd_rc;
}
static int ars_start(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa)
static int ars_start(struct acpi_nfit_desc *acpi_desc,
struct nfit_spa *nfit_spa, enum nfit_ars_state req_type)
{
int rc;
int cmd_rc;
@ -2477,7 +2561,7 @@ 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;
if (test_bit(ARS_SHORT, &nfit_spa->ars_state))
if (req_type == ARS_REQ_SHORT)
ars_start.flags = ND_ARS_RETURN_PREV_DATA;
if (nfit_spa_type(spa) == NFIT_SPA_PM)
ars_start.type = ND_ARS_PERSISTENT;
@ -2534,6 +2618,15 @@ static void ars_complete(struct acpi_nfit_desc *acpi_desc,
struct nd_region *nd_region = nfit_spa->nd_region;
struct device *dev;
lockdep_assert_held(&acpi_desc->init_mutex);
/*
* Only advance the ARS state for ARS runs initiated by the
* kernel, ignore ARS results from BIOS initiated runs for scrub
* completion tracking.
*/
if (acpi_desc->scrub_spa != nfit_spa)
return;
if ((ars_status->address >= spa->address && ars_status->address
< spa->address + spa->length)
|| (ars_status->address < spa->address)) {
@ -2553,28 +2646,13 @@ static void ars_complete(struct acpi_nfit_desc *acpi_desc,
} else
return;
if (test_bit(ARS_DONE, &nfit_spa->ars_state))
return;
if (!test_and_clear_bit(ARS_REQ, &nfit_spa->ars_state))
return;
acpi_desc->scrub_spa = NULL;
if (nd_region) {
dev = nd_region_dev(nd_region);
nvdimm_region_notify(nd_region, NVDIMM_REVALIDATE_POISON);
} else
dev = acpi_desc->dev;
dev_dbg(dev, "ARS: range %d %s complete\n", spa->range_index,
test_bit(ARS_SHORT, &nfit_spa->ars_state)
? "short" : "long");
clear_bit(ARS_SHORT, &nfit_spa->ars_state);
if (test_and_clear_bit(ARS_REQ_REDO, &nfit_spa->ars_state)) {
set_bit(ARS_SHORT, &nfit_spa->ars_state);
set_bit(ARS_REQ, &nfit_spa->ars_state);
dev_dbg(dev, "ARS: processing scrub request received while in progress\n");
} else
set_bit(ARS_DONE, &nfit_spa->ars_state);
dev_dbg(dev, "ARS: range %d complete\n", spa->range_index);
}
static int ars_status_process_records(struct acpi_nfit_desc *acpi_desc)
@ -2855,46 +2933,55 @@ static int acpi_nfit_query_poison(struct acpi_nfit_desc *acpi_desc)
return 0;
}
static int ars_register(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa,
int *query_rc)
static int ars_register(struct acpi_nfit_desc *acpi_desc,
struct nfit_spa *nfit_spa)
{
int rc = *query_rc;
int rc;
if (no_init_ars)
if (no_init_ars || test_bit(ARS_FAILED, &nfit_spa->ars_state))
return acpi_nfit_register_region(acpi_desc, nfit_spa);
set_bit(ARS_REQ, &nfit_spa->ars_state);
set_bit(ARS_SHORT, &nfit_spa->ars_state);
set_bit(ARS_REQ_SHORT, &nfit_spa->ars_state);
set_bit(ARS_REQ_LONG, &nfit_spa->ars_state);
switch (rc) {
switch (acpi_nfit_query_poison(acpi_desc)) {
case 0:
case -EAGAIN:
rc = ars_start(acpi_desc, nfit_spa);
if (rc == -EBUSY) {
*query_rc = rc;
rc = ars_start(acpi_desc, nfit_spa, ARS_REQ_SHORT);
/* shouldn't happen, try again later */
if (rc == -EBUSY)
break;
} else if (rc == 0) {
rc = acpi_nfit_query_poison(acpi_desc);
} else {
if (rc) {
set_bit(ARS_FAILED, &nfit_spa->ars_state);
break;
}
if (rc == -EAGAIN)
clear_bit(ARS_SHORT, &nfit_spa->ars_state);
else if (rc == 0)
ars_complete(acpi_desc, nfit_spa);
clear_bit(ARS_REQ_SHORT, &nfit_spa->ars_state);
rc = acpi_nfit_query_poison(acpi_desc);
if (rc)
break;
acpi_desc->scrub_spa = nfit_spa;
ars_complete(acpi_desc, nfit_spa);
/*
* If ars_complete() says we didn't complete the
* short scrub, we'll try again with a long
* request.
*/
acpi_desc->scrub_spa = NULL;
break;
case -EBUSY:
case -ENOMEM:
case -ENOSPC:
/*
* BIOS was using ARS, wait for it to complete (or
* resources to become available) and then perform our
* own scrubs.
*/
break;
default:
set_bit(ARS_FAILED, &nfit_spa->ars_state);
break;
}
if (test_and_clear_bit(ARS_DONE, &nfit_spa->ars_state))
set_bit(ARS_REQ, &nfit_spa->ars_state);
return acpi_nfit_register_region(acpi_desc, nfit_spa);
}
@ -2916,6 +3003,8 @@ static unsigned int __acpi_nfit_scrub(struct acpi_nfit_desc *acpi_desc,
struct device *dev = acpi_desc->dev;
struct nfit_spa *nfit_spa;
lockdep_assert_held(&acpi_desc->init_mutex);
if (acpi_desc->cancel)
return 0;
@ -2939,21 +3028,49 @@ static unsigned int __acpi_nfit_scrub(struct acpi_nfit_desc *acpi_desc,
ars_complete_all(acpi_desc);
list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
enum nfit_ars_state req_type;
int rc;
if (test_bit(ARS_FAILED, &nfit_spa->ars_state))
continue;
if (test_bit(ARS_REQ, &nfit_spa->ars_state)) {
int rc = ars_start(acpi_desc, nfit_spa);
clear_bit(ARS_DONE, &nfit_spa->ars_state);
dev = nd_region_dev(nfit_spa->nd_region);
dev_dbg(dev, "ARS: range %d ARS start (%d)\n",
nfit_spa->spa->range_index, rc);
if (rc == 0 || rc == -EBUSY)
return 1;
dev_err(dev, "ARS: range %d ARS failed (%d)\n",
nfit_spa->spa->range_index, rc);
set_bit(ARS_FAILED, &nfit_spa->ars_state);
/* prefer short ARS requests first */
if (test_bit(ARS_REQ_SHORT, &nfit_spa->ars_state))
req_type = ARS_REQ_SHORT;
else if (test_bit(ARS_REQ_LONG, &nfit_spa->ars_state))
req_type = ARS_REQ_LONG;
else
continue;
rc = ars_start(acpi_desc, nfit_spa, req_type);
dev = nd_region_dev(nfit_spa->nd_region);
dev_dbg(dev, "ARS: range %d ARS start %s (%d)\n",
nfit_spa->spa->range_index,
req_type == ARS_REQ_SHORT ? "short" : "long",
rc);
/*
* Hmm, we raced someone else starting ARS? Try again in
* a bit.
*/
if (rc == -EBUSY)
return 1;
if (rc == 0) {
dev_WARN_ONCE(dev, acpi_desc->scrub_spa,
"scrub start while range %d active\n",
acpi_desc->scrub_spa->spa->range_index);
clear_bit(req_type, &nfit_spa->ars_state);
acpi_desc->scrub_spa = nfit_spa;
/*
* Consider this spa last for future scrub
* requests
*/
list_move_tail(&nfit_spa->list, &acpi_desc->spas);
return 1;
}
dev_err(dev, "ARS: range %d ARS failed (%d)\n",
nfit_spa->spa->range_index, rc);
set_bit(ARS_FAILED, &nfit_spa->ars_state);
}
return 0;
}
@ -3009,6 +3126,7 @@ static void acpi_nfit_init_ars(struct acpi_nfit_desc *acpi_desc,
struct nd_cmd_ars_cap ars_cap;
int rc;
set_bit(ARS_FAILED, &nfit_spa->ars_state);
memset(&ars_cap, 0, sizeof(ars_cap));
rc = ars_get_cap(acpi_desc, &ars_cap, nfit_spa);
if (rc < 0)
@ -3025,16 +3143,14 @@ static void acpi_nfit_init_ars(struct acpi_nfit_desc *acpi_desc,
nfit_spa->clear_err_unit = ars_cap.clear_err_unit;
acpi_desc->max_ars = max(nfit_spa->max_ars, acpi_desc->max_ars);
clear_bit(ARS_FAILED, &nfit_spa->ars_state);
set_bit(ARS_REQ, &nfit_spa->ars_state);
}
static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
{
struct nfit_spa *nfit_spa;
int rc, query_rc;
int rc;
list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
set_bit(ARS_FAILED, &nfit_spa->ars_state);
switch (nfit_spa_type(nfit_spa->spa)) {
case NFIT_SPA_VOLATILE:
case NFIT_SPA_PM:
@ -3043,20 +3159,12 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc)
}
}
/*
* Reap any results that might be pending before starting new
* short requests.
*/
query_rc = acpi_nfit_query_poison(acpi_desc);
if (query_rc == 0)
ars_complete_all(acpi_desc);
list_for_each_entry(nfit_spa, &acpi_desc->spas, list)
switch (nfit_spa_type(nfit_spa->spa)) {
case NFIT_SPA_VOLATILE:
case NFIT_SPA_PM:
/* register regions and kick off initial ARS run */
rc = ars_register(acpi_desc, nfit_spa, &query_rc);
rc = ars_register(acpi_desc, nfit_spa);
if (rc)
return rc;
break;
@ -3233,6 +3341,8 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
struct nvdimm *nvdimm, unsigned int cmd)
{
struct acpi_nfit_desc *acpi_desc = to_acpi_nfit_desc(nd_desc);
struct nfit_spa *nfit_spa;
int rc = 0;
if (nvdimm)
return 0;
@ -3242,16 +3352,24 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
/*
* The kernel and userspace may race to initiate a scrub, but
* the scrub thread is prepared to lose that initial race. It
* just needs guarantees that any ars it initiates are not
* interrupted by any intervening start reqeusts from userspace.
* just needs guarantees that any ARS it initiates are not
* interrupted by any intervening start requests from userspace.
*/
if (work_busy(&acpi_desc->dwork.work))
return -EBUSY;
mutex_lock(&acpi_desc->init_mutex);
list_for_each_entry(nfit_spa, &acpi_desc->spas, list)
if (acpi_desc->scrub_spa
|| test_bit(ARS_REQ_SHORT, &nfit_spa->ars_state)
|| test_bit(ARS_REQ_LONG, &nfit_spa->ars_state)) {
rc = -EBUSY;
break;
}
mutex_unlock(&acpi_desc->init_mutex);
return 0;
return rc;
}
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc, unsigned long flags)
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
enum nfit_ars_state req_type)
{
struct device *dev = acpi_desc->dev;
int scheduled = 0, busy = 0;
@ -3271,14 +3389,10 @@ int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc, unsigned long flags)
if (test_bit(ARS_FAILED, &nfit_spa->ars_state))
continue;
if (test_and_set_bit(ARS_REQ, &nfit_spa->ars_state)) {
if (test_and_set_bit(req_type, &nfit_spa->ars_state))
busy++;
set_bit(ARS_REQ_REDO, &nfit_spa->ars_state);
} else {
if (test_bit(ARS_SHORT, &flags))
set_bit(ARS_SHORT, &nfit_spa->ars_state);
else
scheduled++;
}
}
if (scheduled) {
sched_ars(acpi_desc);
@ -3464,10 +3578,11 @@ 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);
unsigned long flags = (acpi_desc->scrub_mode == HW_ERROR_SCRUB_ON) ?
0 : 1 << ARS_SHORT;
acpi_nfit_ars_rescan(acpi_desc, flags);
if (acpi_desc->scrub_mode == HW_ERROR_SCRUB_ON)
acpi_nfit_ars_rescan(acpi_desc, ARS_REQ_LONG);
else
acpi_nfit_ars_rescan(acpi_desc, ARS_REQ_SHORT);
}
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)

38
drivers/acpi/nfit/intel.h Normal file
View File

@ -0,0 +1,38 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright(c) 2018 Intel Corporation. All rights reserved.
* Intel specific definitions for NVDIMM Firmware Interface Table - NFIT
*/
#ifndef _NFIT_INTEL_H_
#define _NFIT_INTEL_H_
#define ND_INTEL_SMART 1
#define ND_INTEL_SMART_SHUTDOWN_COUNT_VALID (1 << 5)
#define ND_INTEL_SMART_SHUTDOWN_VALID (1 << 10)
struct nd_intel_smart {
u32 status;
union {
struct {
u32 flags;
u8 reserved0[4];
u8 health;
u8 spares;
u8 life_used;
u8 alarm_flags;
u16 media_temperature;
u16 ctrl_temperature;
u32 shutdown_count;
u8 ait_status;
u16 pmic_temperature;
u8 reserved1[8];
u8 shutdown_state;
u32 vendor_size;
u8 vendor_data[92];
} __packed;
u8 data[128];
};
} __packed;
#endif

21
drivers/acpi/nfit/nfit.h
View File

@ -118,10 +118,8 @@ enum nfit_dimm_notifiers {
};
enum nfit_ars_state {
ARS_REQ,
ARS_REQ_REDO,
ARS_DONE,
ARS_SHORT,
ARS_REQ_SHORT,
ARS_REQ_LONG,
ARS_FAILED,
};
@ -159,6 +157,13 @@ struct nfit_memdev {
struct acpi_nfit_memory_map memdev[0];
};
enum nfit_mem_flags {
NFIT_MEM_LSR,
NFIT_MEM_LSW,
NFIT_MEM_DIRTY,
NFIT_MEM_DIRTY_COUNT,
};
/* assembled tables for a given dimm/memory-device */
struct nfit_mem {
struct nvdimm *nvdimm;
@ -178,9 +183,9 @@ struct nfit_mem {
struct acpi_nfit_desc *acpi_desc;
struct resource *flush_wpq;
unsigned long dsm_mask;
unsigned long flags;
u32 dirty_shutdown;
int family;
bool has_lsr;
bool has_lsw;
};
struct acpi_nfit_desc {
@ -198,6 +203,7 @@ struct acpi_nfit_desc {
struct device *dev;
u8 ars_start_flags;
struct nd_cmd_ars_status *ars_status;
struct nfit_spa *scrub_spa;
struct delayed_work dwork;
struct list_head list;
struct kernfs_node *scrub_count_state;
@ -252,7 +258,8 @@ 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, unsigned long flags);
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
enum nfit_ars_state req_type);
#ifdef CONFIG_X86_MCE
void nfit_mce_register(void);

20
drivers/nvdimm/bus.c
View File

@ -54,12 +54,6 @@ static int to_nd_device_type(struct device *dev)
static int nvdimm_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
/*
* Ensure that region devices always have their numa node set as
* early as possible.
*/
if (is_nd_region(dev))
set_dev_node(dev, to_nd_region(dev)->numa_node);
return add_uevent_var(env, "MODALIAS=" ND_DEVICE_MODALIAS_FMT,
to_nd_device_type(dev));
}
@ -488,6 +482,8 @@ static void nd_async_device_register(void *d, async_cookie_t cookie)
put_device(dev);
}
put_device(dev);
if (dev->parent)
put_device(dev->parent);
}
static void nd_async_device_unregister(void *d, async_cookie_t cookie)
@ -506,7 +502,19 @@ void __nd_device_register(struct device *dev)
{
if (!dev)
return;
/*
* Ensure that region devices always have their NUMA node set as
* early as possible. This way we are able to make certain that
* any memory associated with the creation and the creation
* itself of the region is associated with the correct node.
*/
if (is_nd_region(dev))
set_dev_node(dev, to_nd_region(dev)->numa_node);
dev->bus = &nvdimm_bus_type;
if (dev->parent)
get_device(dev->parent);
get_device(dev);
async_schedule_domain(nd_async_device_register, dev,
&nd_async_domain);

6
drivers/nvdimm/dimm.c
View File

@ -75,7 +75,7 @@ static int nvdimm_probe(struct device *dev)
* DIMM capacity. We fail the dimm probe to prevent regions from
* attempting to parse the label area.
*/
rc = nvdimm_init_config_data(ndd);
rc = nd_label_data_init(ndd);
if (rc == -EACCES)
nvdimm_set_locked(dev);
if (rc)
@ -84,10 +84,6 @@ static int nvdimm_probe(struct device *dev)
dev_dbg(dev, "config data size: %d\n", ndd->nsarea.config_size);
nvdimm_bus_lock(dev);
ndd->ns_current = nd_label_validate(ndd);
ndd->ns_next = nd_label_next_nsindex(ndd->ns_current);
nd_label_copy(ndd, to_next_namespace_index(ndd),
to_current_namespace_index(ndd));
if (ndd->ns_current >= 0) {
rc = nd_label_reserve_dpa(ndd);
if (rc == 0)

60
drivers/nvdimm/dimm_devs.c
View File

@ -85,56 +85,48 @@ int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd)
return cmd_rc;
}
int nvdimm_init_config_data(struct nvdimm_drvdata *ndd)
int nvdimm_get_config_data(struct nvdimm_drvdata *ndd, void *buf,
size_t offset, size_t len)
{
struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(ndd->dev);
struct nvdimm_bus_descriptor *nd_desc = nvdimm_bus->nd_desc;
int rc = validate_dimm(ndd), cmd_rc = 0;
struct nd_cmd_get_config_data_hdr *cmd;
struct nvdimm_bus_descriptor *nd_desc;
u32 max_cmd_size, config_size;
size_t offset;
size_t max_cmd_size, buf_offset;
if (rc)
return rc;
if (ndd->data)
return 0;
if (ndd->nsarea.status || ndd->nsarea.max_xfer == 0
|| ndd->nsarea.config_size < ND_LABEL_MIN_SIZE) {
dev_dbg(ndd->dev, "failed to init config data area: (%d:%d)\n",
ndd->nsarea.max_xfer, ndd->nsarea.config_size);
if (offset + len > ndd->nsarea.config_size)
return -ENXIO;
}
ndd->data = kvmalloc(ndd->nsarea.config_size, GFP_KERNEL);
if (!ndd->data)
return -ENOMEM;
max_cmd_size = min_t(u32, PAGE_SIZE, ndd->nsarea.max_xfer);
cmd = kzalloc(max_cmd_size + sizeof(*cmd), GFP_KERNEL);
max_cmd_size = min_t(u32, len, ndd->nsarea.max_xfer);
cmd = kvzalloc(max_cmd_size + sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
nd_desc = nvdimm_bus->nd_desc;
for (config_size = ndd->nsarea.config_size, offset = 0;
config_size; config_size -= cmd->in_length,
offset += cmd->in_length) {
cmd->in_length = min(config_size, max_cmd_size);
cmd->in_offset = offset;
for (buf_offset = 0; len;
len -= cmd->in_length, buf_offset += cmd->in_length) {
size_t cmd_size;
cmd->in_offset = offset + buf_offset;
cmd->in_length = min(max_cmd_size, len);
cmd_size = sizeof(*cmd) + cmd->in_length;
rc = nd_desc->ndctl(nd_desc, to_nvdimm(ndd->dev),
ND_CMD_GET_CONFIG_DATA, cmd,
cmd->in_length + sizeof(*cmd), &cmd_rc);
ND_CMD_GET_CONFIG_DATA, cmd, cmd_size, &cmd_rc);
if (rc < 0)
break;
if (cmd_rc < 0) {
rc = cmd_rc;
break;
}
memcpy(ndd->data + offset, cmd->out_buf, cmd->in_length);
/* out_buf should be valid, copy it into our output buffer */
memcpy(buf + buf_offset, cmd->out_buf, cmd->in_length);
}
dev_dbg(ndd->dev, "len: %zu rc: %d\n", offset, rc);
kfree(cmd);
kvfree(cmd);
return rc;
}
@ -151,15 +143,11 @@ int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
if (rc)
return rc;
if (!ndd->data)
return -ENXIO;
if (offset + len > ndd->nsarea.config_size)
return -ENXIO;
max_cmd_size = min_t(u32, PAGE_SIZE, len);
max_cmd_size = min_t(u32, max_cmd_size, ndd->nsarea.max_xfer);
cmd = kzalloc(max_cmd_size + sizeof(*cmd) + sizeof(u32), GFP_KERNEL);
max_cmd_size = min_t(u32, len, ndd->nsarea.max_xfer);
cmd = kvzalloc(max_cmd_size + sizeof(*cmd) + sizeof(u32), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
@ -183,7 +171,7 @@ int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
break;
}
}
kfree(cmd);
kvfree(cmd);
return rc;
}

144
drivers/nvdimm/label.c
View File

@ -75,7 +75,8 @@ size_t sizeof_namespace_index(struct nvdimm_drvdata *ndd)
/*
* Per UEFI 2.7, the minimum size of the Label Storage Area is large
* enough to hold 2 index blocks and 2 labels. The minimum index
* block size is 256 bytes, and the minimum label size is 256 bytes.
* block size is 256 bytes. The label size is 128 for namespaces
* prior to version 1.2 and at minimum 256 for version 1.2 and later.
*/
nslot = nvdimm_num_label_slots(ndd);
space = ndd->nsarea.config_size - nslot * sizeof_namespace_label(ndd);
@ -183,6 +184,13 @@ static int __nd_label_validate(struct nvdimm_drvdata *ndd)
__le64_to_cpu(nsindex[i]->otheroff));
continue;
}
if (__le64_to_cpu(nsindex[i]->labeloff)
!= 2 * sizeof_namespace_index(ndd)) {
dev_dbg(dev, "nsindex%d labeloff: %#llx invalid\n",
i, (unsigned long long)
__le64_to_cpu(nsindex[i]->labeloff));
continue;
}
size = __le64_to_cpu(nsindex[i]->mysize);
if (size > sizeof_namespace_index(ndd)
@ -227,7 +235,7 @@ static int __nd_label_validate(struct nvdimm_drvdata *ndd)
return -1;
}
int nd_label_validate(struct nvdimm_drvdata *ndd)
static int nd_label_validate(struct nvdimm_drvdata *ndd)
{
/*
* In order to probe for and validate namespace index blocks we
@ -250,12 +258,12 @@ int nd_label_validate(struct nvdimm_drvdata *ndd)
return -1;
}
void nd_label_copy(struct nvdimm_drvdata *ndd, struct nd_namespace_index *dst,
struct nd_namespace_index *src)
static void nd_label_copy(struct nvdimm_drvdata *ndd,
struct nd_namespace_index *dst,
struct nd_namespace_index *src)
{
if (dst && src)
/* pass */;
else
/* just exit if either destination or source is NULL */
if (!dst || !src)
return;
memcpy(dst, src, sizeof_namespace_index(ndd));
@ -410,6 +418,128 @@ int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd)
return 0;
}
int nd_label_data_init(struct nvdimm_drvdata *ndd)
{
size_t config_size, read_size, max_xfer, offset;
struct nd_namespace_index *nsindex;
unsigned int i;
int rc = 0;
u32 nslot;
if (ndd->data)
return 0;
if (ndd->nsarea.status || ndd->nsarea.max_xfer == 0) {
dev_dbg(ndd->dev, "failed to init config data area: (%u:%u)\n",
ndd->nsarea.max_xfer, ndd->nsarea.config_size);
return -ENXIO;
}
/*
* We need to determine the maximum index area as this is the section
* we must read and validate before we can start processing labels.
*
* If the area is too small to contain the two indexes and 2 labels
* then we abort.
*
* Start at a label size of 128 as this should result in the largest
* possible namespace index size.
*/
ndd->nslabel_size = 128;
read_size = sizeof_namespace_index(ndd) * 2;
if (!read_size)
return -ENXIO;
/* Allocate config data */
config_size = ndd->nsarea.config_size;
ndd->data = kvzalloc(config_size, GFP_KERNEL);
if (!ndd->data)
return -ENOMEM;
/*
* We want to guarantee as few reads as possible while conserving
* memory. To do that we figure out how much unused space will be left
* in the last read, divide that by the total number of reads it is
* going to take given our maximum transfer size, and then reduce our
* maximum transfer size based on that result.
*/
max_xfer = min_t(size_t, ndd->nsarea.max_xfer, config_size);
if (read_size < max_xfer) {
/* trim waste */
max_xfer -= ((max_xfer - 1) - (config_size - 1) % max_xfer) /
DIV_ROUND_UP(config_size, max_xfer);
/* make certain we read indexes in exactly 1 read */
if (max_xfer < read_size)
max_xfer = read_size;
}
/* Make our initial read size a multiple of max_xfer size */
read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer,
config_size);
/* Read the index data */
rc = nvdimm_get_config_data(ndd, ndd->data, 0, read_size);
if (rc)
goto out_err;
/* Validate index data, if not valid assume all labels are invalid */
ndd->ns_current = nd_label_validate(ndd);
if (ndd->ns_current < 0)
return 0;
/* Record our index values */
ndd->ns_next = nd_label_next_nsindex(ndd->ns_current);
/* Copy "current" index on top of the "next" index */
nsindex = to_current_namespace_index(ndd);
nd_label_copy(ndd, to_next_namespace_index(ndd), nsindex);
/* Determine starting offset for label data */
offset = __le64_to_cpu(nsindex->labeloff);
nslot = __le32_to_cpu(nsindex->nslot);
/* Loop through the free list pulling in any active labels */
for (i = 0; i < nslot; i++, offset += ndd->nslabel_size) {
size_t label_read_size;
/* zero out the unused labels */
if (test_bit_le(i, nsindex->free)) {
memset(ndd->data + offset, 0, ndd->nslabel_size);
continue;
}
/* if we already read past here then just continue */
if (offset + ndd->nslabel_size <= read_size)
continue;
/* if we haven't read in a while reset our read_size offset */
if (read_size < offset)
read_size = offset;
/* determine how much more will be read after this next call. */
label_read_size = offset + ndd->nslabel_size - read_size;
label_read_size = DIV_ROUND_UP(label_read_size, max_xfer) *
max_xfer;
/* truncate last read if needed */
if (read_size + label_read_size > config_size)
label_read_size = config_size - read_size;
/* Read the label data */
rc = nvdimm_get_config_data(ndd, ndd->data + read_size,
read_size, label_read_size);
if (rc)
goto out_err;
/* push read_size to next read offset */
read_size += label_read_size;
}
dev_dbg(ndd->dev, "len: %zu rc: %d\n", offset, rc);
out_err:
return rc;
}
int nd_label_active_count(struct nvdimm_drvdata *ndd)
{
struct nd_namespace_index *nsindex;

4
drivers/nvdimm/label.h
View File

@ -138,9 +138,7 @@ static inline int nd_label_next_nsindex(int index)
}
struct nvdimm_drvdata;
int nd_label_validate(struct nvdimm_drvdata *ndd);
void nd_label_copy(struct nvdimm_drvdata *ndd, struct nd_namespace_index *dst,
struct nd_namespace_index *src);
int nd_label_data_init(struct nvdimm_drvdata *ndd);
size_t sizeof_namespace_index(struct nvdimm_drvdata *ndd);
int nd_label_active_count(struct nvdimm_drvdata *ndd);
struct nd_namespace_label *nd_label_active(struct nvdimm_drvdata *ndd, int n);

1
drivers/nvdimm/namespace_devs.c
View File

@ -2099,7 +2099,6 @@ static struct device *nd_namespace_pmem_create(struct nd_region *nd_region)
return NULL;
}
dev_set_name(dev, "namespace%d.%d", nd_region->id, nspm->id);
dev->parent = &nd_region->dev;
dev->groups = nd_namespace_attribute_groups;
nd_namespace_pmem_set_resource(nd_region, nspm, 0);

1
drivers/nvdimm/nd-core.h
View File

@ -14,7 +14,6 @@
#define __ND_CORE_H__
#include <linux/libnvdimm.h>
#include <linux/device.h>
#include <linux/libnvdimm.h>
#include <linux/sizes.h>
#include <linux/mutex.h>
#include <linux/nd.h>

2
drivers/nvdimm/nd.h
View File

@ -241,6 +241,8 @@ struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping);
int nvdimm_check_config_data(struct device *dev);
int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
int nvdimm_get_config_data(struct nvdimm_drvdata *ndd, void *buf,
size_t offset, size_t len);
int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
void *buf, size_t len);
long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,

61
drivers/nvdimm/pfn_devs.c
View File

@ -361,6 +361,65 @@ struct device *nd_pfn_create(struct nd_region *nd_region)
return dev;
}
/*
* nd_pfn_clear_memmap_errors() clears any errors in the volatile memmap
* space associated with the namespace. If the memmap is set to DRAM, then
* this is a no-op. Since the memmap area is freshly initialized during
* probe, we have an opportunity to clear any badblocks in this area.
*/
static int nd_pfn_clear_memmap_errors(struct nd_pfn *nd_pfn)
{
struct nd_region *nd_region = to_nd_region(nd_pfn->dev.parent);
struct nd_namespace_common *ndns = nd_pfn->ndns;
void *zero_page = page_address(ZERO_PAGE(0));
struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb;
int num_bad, meta_num, rc, bb_present;
sector_t first_bad, meta_start;
struct nd_namespace_io *nsio;
if (nd_pfn->mode != PFN_MODE_PMEM)
return 0;
nsio = to_nd_namespace_io(&ndns->dev);
meta_start = (SZ_4K + sizeof(*pfn_sb)) >> 9;
meta_num = (le64_to_cpu(pfn_sb->dataoff) >> 9) - meta_start;
do {
unsigned long zero_len;
u64 nsoff;
bb_present = badblocks_check(&nd_region->bb, meta_start,
meta_num, &first_bad, &num_bad);
if (bb_present) {
dev_dbg(&nd_pfn->dev, "meta: %x badblocks at %lx\n",
num_bad, first_bad);
nsoff = ALIGN_DOWN((nd_region->ndr_start
+ (first_bad << 9)) - nsio->res.start,
PAGE_SIZE);
zero_len = ALIGN(num_bad << 9, PAGE_SIZE);
while (zero_len) {
unsigned long chunk = min(zero_len, PAGE_SIZE);
rc = nvdimm_write_bytes(ndns, nsoff, zero_page,
chunk, 0);
if (rc)
break;
zero_len -= chunk;
nsoff += chunk;
}
if (rc) {
dev_err(&nd_pfn->dev,
"error clearing %x badblocks at %lx\n",
num_bad, first_bad);
return rc;
}
}
} while (bb_present);
return 0;
}
int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
{
u64 checksum, offset;
@ -477,7 +536,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
return -ENXIO;
}
return 0;
return nd_pfn_clear_memmap_errors(nd_pfn);
}
EXPORT_SYMBOL(nd_pfn_validate);

4
drivers/nvdimm/pmem.c
View File

@ -421,9 +421,11 @@ static int pmem_attach_disk(struct device *dev,
addr = devm_memremap_pages(dev, &pmem->pgmap);
pmem->pfn_flags |= PFN_MAP;
memcpy(&bb_res, &pmem->pgmap.res, sizeof(bb_res));
} else
} else {
addr = devm_memremap(dev, pmem->phys_addr,
pmem->size, ARCH_MEMREMAP_PMEM);
memcpy(&bb_res, &nsio->res, sizeof(bb_res));
}
/*
* At release time the queue must be frozen before

11
drivers/nvdimm/region_devs.c
View File

@ -560,10 +560,17 @@ static ssize_t region_badblocks_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nd_region *nd_region = to_nd_region(dev);
ssize_t rc;
return badblocks_show(&nd_region->bb, buf, 0);
device_lock(dev);
if (dev->driver)
rc = badblocks_show(&nd_region->bb, buf, 0);
else
rc = -ENXIO;
device_unlock(dev);
return rc;
}
static DEVICE_ATTR(badblocks, 0444, region_badblocks_show, NULL);
static ssize_t resource_show(struct device *dev,

22
include/linux/ndctl.h Normal file
View File

@ -0,0 +1,22 @@
/*
* Copyright (c) 2014-2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU Lesser General Public License,
* version 2.1, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*/
#ifndef _LINUX_NDCTL_H
#define _LINUX_NDCTL_H
#include <uapi/linux/ndctl.h>
enum {
ND_MIN_NAMESPACE_SIZE = PAGE_SIZE,
};
#endif /* _LINUX_NDCTL_H */

52
include/uapi/linux/ndctl.h
View File

@ -128,37 +128,31 @@ enum {
static inline const char *nvdimm_bus_cmd_name(unsigned cmd)
{
static const char * const names[] = {
[ND_CMD_ARS_CAP] = "ars_cap",
[ND_CMD_ARS_START] = "ars_start",
[ND_CMD_ARS_STATUS] = "ars_status",
[ND_CMD_CLEAR_ERROR] = "clear_error",
[ND_CMD_CALL] = "cmd_call",
};
if (cmd < ARRAY_SIZE(names) && names[cmd])
return names[cmd];
return "unknown";
switch (cmd) {
case ND_CMD_ARS_CAP: return "ars_cap";
case ND_CMD_ARS_START: return "ars_start";
case ND_CMD_ARS_STATUS: return "ars_status";
case ND_CMD_CLEAR_ERROR: return "clear_error";
case ND_CMD_CALL: return "cmd_call";
default: return "unknown";
}
}
static inline const char *nvdimm_cmd_name(unsigned cmd)
{
static const char * const names[] = {
[ND_CMD_SMART] = "smart",
[ND_CMD_SMART_THRESHOLD] = "smart_thresh",
[ND_CMD_DIMM_FLAGS] = "flags",
[ND_CMD_GET_CONFIG_SIZE] = "get_size",
[ND_CMD_GET_CONFIG_DATA] = "get_data",
[ND_CMD_SET_CONFIG_DATA] = "set_data",
[ND_CMD_VENDOR_EFFECT_LOG_SIZE] = "effect_size",
[ND_CMD_VENDOR_EFFECT_LOG] = "effect_log",
[ND_CMD_VENDOR] = "vendor",
[ND_CMD_CALL] = "cmd_call",
};
if (cmd < ARRAY_SIZE(names) && names[cmd])
return names[cmd];
return "unknown";
switch (cmd) {
case ND_CMD_SMART: return "smart";
case ND_CMD_SMART_THRESHOLD: return "smart_thresh";
case ND_CMD_DIMM_FLAGS: return "flags";
case ND_CMD_GET_CONFIG_SIZE: return "get_size";
case ND_CMD_GET_CONFIG_DATA: return "get_data";
case ND_CMD_SET_CONFIG_DATA: return "set_data";
case ND_CMD_VENDOR_EFFECT_LOG_SIZE: return "effect_size";
case ND_CMD_VENDOR_EFFECT_LOG: return "effect_log";
case ND_CMD_VENDOR: return "vendor";
case ND_CMD_CALL: return "cmd_call";
default: return "unknown";
}
}
#define ND_IOCTL 'N'
@ -208,10 +202,6 @@ enum nd_driver_flags {
ND_DRIVER_DAX_PMEM = 1 << ND_DEVICE_DAX_PMEM,
};
enum {
ND_MIN_NAMESPACE_SIZE = PAGE_SIZE,
};
enum ars_masks {
ARS_STATUS_MASK = 0x0000FFFF,
ARS_EXT_STATUS_SHIFT = 16,

1
tools/testing/nvdimm/Kbuild
View File

@ -22,6 +22,7 @@ NVDIMM_SRC := $(DRIVERS)/nvdimm
ACPI_SRC := $(DRIVERS)/acpi/nfit
DAX_SRC := $(DRIVERS)/dax
ccflags-y := -I$(src)/$(NVDIMM_SRC)/
ccflags-y += -I$(src)/$(ACPI_SRC)/
obj-$(CONFIG_LIBNVDIMM) += libnvdimm.o
obj-$(CONFIG_BLK_DEV_PMEM) += nd_pmem.o

8
tools/testing/nvdimm/acpi_nfit_test.c
View File

@ -4,5 +4,13 @@
#include <linux/module.h>
#include <linux/printk.h>
#include "watermark.h"
#include <nfit.h>
nfit_test_watermark(acpi_nfit);
/* strong / override definition of nfit_intel_shutdown_status */
void nfit_intel_shutdown_status(struct nfit_mem *nfit_mem)
{
set_bit(NFIT_MEM_DIRTY_COUNT, &nfit_mem->flags);
nfit_mem->dirty_shutdown = 42;
}

4
tools/testing/nvdimm/test/nfit.c
View File

@ -24,6 +24,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <nd-core.h>
#include <intel.h>
#include <nfit.h>
#include <nd.h>
#include "nfit_test.h"
@ -148,6 +149,7 @@ static const struct nd_intel_smart smart_def = {
| ND_INTEL_SMART_ALARM_VALID
| ND_INTEL_SMART_USED_VALID
| ND_INTEL_SMART_SHUTDOWN_VALID
| ND_INTEL_SMART_SHUTDOWN_COUNT_VALID
| ND_INTEL_SMART_MTEMP_VALID
| ND_INTEL_SMART_CTEMP_VALID,
.health = ND_INTEL_SMART_NON_CRITICAL_HEALTH,
@ -160,8 +162,8 @@ static const struct nd_intel_smart smart_def = {
.ait_status = 1,
.life_used = 5,
.shutdown_state = 0,
.shutdown_count = 42,
.vendor_size = 0,
.shutdown_count = 100,
};
struct nfit_test_fw {

24
tools/testing/nvdimm/test/nfit_test.h
View File

@ -117,30 +117,6 @@ struct nd_cmd_ars_err_inj_stat {
#define ND_INTEL_SMART_INJECT_FATAL (1 << 2)
#define ND_INTEL_SMART_INJECT_SHUTDOWN (1 << 3)
struct nd_intel_smart {
__u32 status;
union {
struct {
__u32 flags;
__u8 reserved0[4];
__u8 health;
__u8 spares;
__u8 life_used;
__u8 alarm_flags;
__u16 media_temperature;
__u16 ctrl_temperature;
__u32 shutdown_count;
__u8 ait_status;
__u16 pmic_temperature;
__u8 reserved1[8];
__u8 shutdown_state;
__u32 vendor_size;
__u8 vendor_data[92];
} __packed;
__u8 data[128];
};
} __packed;
struct nd_intel_smart_threshold {
__u32 status;
union {