From a072f7b7972fd85bdefefa1d6febec483438d420 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Wed, 30 Nov 2022 12:22:10 -0700 Subject: cxl/pmem: Add "Freeze Security State" security command support Create callback function to support the nvdimm_security_ops() ->freeze() callback. Translate the operation to send "Freeze Security State" security command for CXL memory device. See CXL rev3.0 spec section 8.2.9.8.6.5 for reference. Reviewed-by: Davidlohr Bueso Reviewed-by: Jonathan Cameron Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/166983613019.2734609.10645754779802492122.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dan Williams --- drivers/cxl/security.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/cxl/security.c') diff --git a/drivers/cxl/security.c b/drivers/cxl/security.c index 5a8e852ecadb..f323a1593cfc 100644 --- a/drivers/cxl/security.c +++ b/drivers/cxl/security.c @@ -87,10 +87,20 @@ static int cxl_pmem_security_disable(struct nvdimm *nvdimm, return rc; } +static int cxl_pmem_security_freeze(struct nvdimm *nvdimm) +{ + struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm); + struct cxl_memdev *cxlmd = cxl_nvd->cxlmd; + struct cxl_dev_state *cxlds = cxlmd->cxlds; + + return cxl_mbox_send_cmd(cxlds, CXL_MBOX_OP_FREEZE_SECURITY, NULL, 0, NULL, 0); +} + static const struct nvdimm_security_ops __cxl_security_ops = { .get_flags = cxl_pmem_get_security_flags, .change_key = cxl_pmem_security_change_key, .disable = cxl_pmem_security_disable, + .freeze = cxl_pmem_security_freeze, }; const struct nvdimm_security_ops *cxl_security_ops = &__cxl_security_ops; -- cgit v1.2.3