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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>
This commit is contained in:
Dan Williams 2017-10-29 12:13:07 -07:00
parent 0a3ff78699
commit b9b1504d3c
2 changed files with 14 additions and 2 deletions
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10
drivers/acpi/nfit/core.c
View File

@ -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);

6
drivers/acpi/nfit/nfit.h
View File

@ -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,