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nfit: Add Hyper-V NVDIMM DSM command set to white list

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Add the Hyper-V _DSM command set to the white list of NVDIMM command
sets.

This command set is documented at http://www.uefi.org/RFIC_LIST
(see "Virtual NVDIMM 0x1901").

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dexuan Cui
2019-01-29 00:56:17 +00:00
committed by Dan Williams
parent 43f89877f2
commit 1194c41331
3 changed files with 20 additions and 4 deletions
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17
drivers/acpi/nfit/core.c
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@@ -1846,9 +1846,17 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
dev_set_drvdata(&adev_dimm->dev, nfit_mem);
/*
* Until standardization materializes we need to consider 4
* different command sets. Note, that checking for function0 (bit0)
* tells us if any commands are reachable through this GUID.
* There are 4 "legacy" NVDIMM command sets
* (NVDIMM_FAMILY_{INTEL,MSFT,HPE1,HPE2}) that were created before
* an EFI working group was established to constrain this
* proliferation. The nfit driver probes for the supported command
* set by GUID. Note, if you're a platform developer looking to add
* a new command set to this probe, consider using an existing set,
* or otherwise seek approval to publish the command set at
* http://www.uefi.org/RFIC_LIST.
*
* Note, that checking for function0 (bit0) tells us if any commands
* are reachable through this GUID.
*/
for (i = 0; i <= NVDIMM_FAMILY_MAX; i++)
if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1))
@@ -1871,6 +1879,8 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
dsm_mask &= ~(1 << 8);
} else if (nfit_mem->family == NVDIMM_FAMILY_MSFT) {
dsm_mask = 0xffffffff;
} else if (nfit_mem->family == NVDIMM_FAMILY_HYPERV) {
dsm_mask = 0x1f;
} else {
dev_dbg(dev, "unknown dimm command family\n");
nfit_mem->family = -1;
@@ -3714,6 +3724,7 @@ static __init int nfit_init(void)
guid_parse(UUID_NFIT_DIMM_N_HPE1, &nfit_uuid[NFIT_DEV_DIMM_N_HPE1]);
guid_parse(UUID_NFIT_DIMM_N_HPE2, &nfit_uuid[NFIT_DEV_DIMM_N_HPE2]);
guid_parse(UUID_NFIT_DIMM_N_MSFT, &nfit_uuid[NFIT_DEV_DIMM_N_MSFT]);
guid_parse(UUID_NFIT_DIMM_N_HYPERV, &nfit_uuid[NFIT_DEV_DIMM_N_HYPERV]);
nfit_wq = create_singlethread_workqueue("nfit");
if (!nfit_wq)