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authorDan Williams <dan.j.williams@intel.com>2017-10-29 12:13:07 -0700
committerDan Williams <dan.j.williams@intel.com>2017-10-29 12:13:07 -0700
commitb9b1504d3c6d6831c822cd785e095fc5fb155346 (patch)
tree3eb270e7ff9197a92df20f93ada3bbdb658bc7df /drivers/acpi
parent0a3ff78699d1817e711441715d22665475466036 (diff)
downloadlinux-b9b1504d3c6d6831c822cd785e095fc5fb155346.tar.bz2
acpi, nfit: hide unknown commands from nmemX/commands
For vendor specific commands that do not have a common kernel translation, hide them from nmemX/commands. For example, the following results from new enabling to probe for support of the new NVDIMM_FAMILY_INTEL DSMs specified in v1.6 of the command specification [1]: # cat /sys/bus/nd/devices/nmem0/commands smart smart_thresh flags get_size get_data set_data effect_size effect_log vendor cmd_call unknown unknown unknown unknown unknown unknown unknown unknown [1]: https://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/nfit/core.c10
-rw-r--r--drivers/acpi/nfit/nfit.h6
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index ebe0857ac346..444832b372ec 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1769,8 +1769,14 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
* userspace interface.
*/
cmd_mask = 1UL << ND_CMD_CALL;
- if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
- cmd_mask |= nfit_mem->dsm_mask;
+ if (nfit_mem->family == NVDIMM_FAMILY_INTEL) {
+ /*
+ * These commands have a 1:1 correspondence
+ * between DSM payload and libnvdimm ioctl
+ * payload format.
+ */
+ cmd_mask |= nfit_mem->dsm_mask & NVDIMM_STANDARD_CMDMASK;
+ }
if (nfit_mem->has_lsi)
set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);
diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h
index 3976d649f27c..b987196bf132 100644
--- a/drivers/acpi/nfit/nfit.h
+++ b/drivers/acpi/nfit/nfit.h
@@ -38,6 +38,12 @@
| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
| ACPI_NFIT_MEM_NOT_ARMED | ACPI_NFIT_MEM_MAP_FAILED)
+#define NVDIMM_STANDARD_CMDMASK \
+(1 << ND_CMD_SMART | 1 << ND_CMD_SMART_THRESHOLD | 1 << ND_CMD_DIMM_FLAGS \
+ | 1 << ND_CMD_GET_CONFIG_SIZE | 1 << ND_CMD_GET_CONFIG_DATA \
+ | 1 << ND_CMD_SET_CONFIG_DATA | 1 << ND_CMD_VENDOR_EFFECT_LOG_SIZE \
+ | 1 << ND_CMD_VENDOR_EFFECT_LOG | 1 << ND_CMD_VENDOR)
+
enum nfit_uuids {
/* for simplicity alias the uuid index with the family id */
NFIT_DEV_DIMM = NVDIMM_FAMILY_INTEL,