nfit_test: Enable DSMs for all test NFITs

In preparation for getting a poison list using ARS DSMs, enable DSMs for
all manufactured NFITs supplied by the test framework.  Also, supply
valid response data for ars_status.
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

tools/testing/nvdimm/test/nfit.c

@@ -248,6 +248,8 @@ static int nfit_test_cmd_ars_status(struct nd_cmd_ars_status *nd_cmd,
 
 	nd_cmd->out_length = 256;
 	nd_cmd->num_records = 0;
+	nd_cmd->address = 0;
+	nd_cmd->length = -1ULL;
 	nd_cmd->status = 0;
 
 	return 0;
@@ -1088,6 +1090,8 @@ static void nfit_test1_setup(struct nfit_test *t)
 	struct acpi_nfit_memory_map *memdev;
 	struct acpi_nfit_control_region *dcr;
 	struct acpi_nfit_system_address *spa;
+	struct nvdimm_bus_descriptor *nd_desc;
+	struct acpi_nfit_desc *acpi_desc;
 
 	offset = 0;
 	/* spa0 (flat range with no bdw aliasing) */
@@ -1135,6 +1139,13 @@ static void nfit_test1_setup(struct nfit_test *t)
 	dcr->command_size = 0;
 	dcr->status_offset = 0;
 	dcr->status_size = 0;
+
+	acpi_desc = &t->acpi_desc;
+	set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_dsm_force_en);
+	set_bit(ND_CMD_ARS_START, &acpi_desc->bus_dsm_force_en);
+	set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_dsm_force_en);
+	nd_desc = &acpi_desc->nd_desc;
+	nd_desc->ndctl = nfit_test_ctl;
 }
 
 static int nfit_test_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa,