nvme: Add show-regs and get-property commands NSSD print outputs

Output the NVM Subsystem Shutdown property.

Signed-off-by: Tokunori Ikegami <ikegami.t@gmail.com>

Author: ikegami-t

nvme-print-json.c

@@ -1017,6 +1017,11 @@ static void json_registers_nssr(__u32 nssr, struct json_object *r)
 	obj_add_uint(r, "NVM Subsystem Reset Control (NSSRC)", nssr);
 }
 
+static void json_registers_nssd(__u32 nssd, struct json_object *r)
+{
+	obj_add_uint_nx(r, "NVM Subsystem Shutdown Control (NSSC)", nssd);
+}
+
 static void json_registers_crto(__u32 crto, struct json_object *r)
 {
 	obj_add_uint_x(r, "crto", crto);
@@ -1254,6 +1259,9 @@ static void json_single_property_human(int offset, uint64_t value64, struct json
 	case NVME_REG_NSSR:
 		json_registers_nssr(value32, r);
 		break;
+	case NVME_REG_NSSD:
+		json_registers_nssd(value32, r);
+		break;
 	case NVME_REG_CRTO:
 		json_registers_crto(value32, r);
 		break;
@@ -2482,6 +2490,16 @@ static void json_ctrl_registers_nssr(void *bar, struct json_object *r)
 		obj_add_int(r, "nssr", nssr);
 }
 
+static void json_ctrl_registers_nssd(void *bar, struct json_object *r)
+{
+	uint32_t nssd = mmio_read32(bar + NVME_REG_NSSD);
+
+	if (human())
+		json_registers_nssd(nssd, obj_create_array_obj(r, "nssd"));
+	else
+		obj_add_int(r, "nssd", nssd);
+}
+
 static void json_ctrl_registers_crto(void *bar, struct json_object *r)
 {
 	uint32_t crto = mmio_read32(bar + NVME_REG_CRTO);
@@ -2673,6 +2691,7 @@ static void json_ctrl_registers(void *bar, bool fabrics)
 	json_ctrl_registers_cc(bar, r);
 	json_ctrl_registers_csts(bar, r);
 	json_ctrl_registers_nssr(bar, r);
+	json_ctrl_registers_nssd(bar, r);
 	json_ctrl_registers_crto(bar, r);
 	json_ctrl_registers_aqa(bar, r);
 	json_ctrl_registers_asq(bar, r);

nvme-print-stdout.c

@@ -1223,6 +1223,11 @@ static void stdout_registers_csts(__u32 csts)
 
 }
 
+static void stdout_registers_nssd(__u32 nssd)
+{
+	printf("\tNVM Subsystem Shutdown Control (NSSC): %#x\n\n", nssd);
+}
+
 static void stdout_registers_crto(__u32 crto)
 {
 	printf("\tCRIMT                               : %d secs\n", NVME_CRTO_CRIMT(crto) / 2);
@@ -1621,6 +1626,10 @@ static void stdout_single_property(int offset, uint64_t value64)
 		printf("nssr : %x\n", value32);
 		printf("\tNVM Subsystem Reset Control (NSSRC): %u\n\n", value32);
 		break;
+	case NVME_REG_NSSD:
+		printf("nssd : %x\n", value32);
+		stdout_registers_nssd(value32);
+		break;
 	case NVME_REG_CRTO:
 		printf("crto : %x\n", value32);
 		stdout_registers_crto(value32);

nvme.c

@@ -5380,7 +5380,7 @@ static int get_property(int argc, char **argv, struct command *cmd, struct plugi
 {
 	const char *desc = "Reads and shows the defined NVMe controller property\n"
 		"for NVMe over Fabric. Property offset must be one of:\n"
-		"CAP=0x0, VS=0x8, CC=0x14, CSTS=0x1c, NSSR=0x20";
+		"CAP=0x0, VS=0x8, CC=0x14, CSTS=0x1c, NSSR=0x20, NSSD=0x64, CRTO=0x68";
 	const char *offset = "offset of the requested property";
 	const char *human_readable = "show property in readable format";