2 files changed, 48 insertions, 6 deletions

diff --git a/sys/dev/nvme/nvme.h b/sys/dev/nvme/nvme.h
index 8bd0e4ed5845..50c81d47d663 100644
--- a/sys/dev/nvme/nvme.h
+++ b/sys/dev/nvme/nvme.h
@@ -150,6 +150,36 @@
 #define NVME_AQA_REG_ACQS_SHIFT				(16)
 #define NVME_AQA_REG_ACQS_MASK				(0xFFF)
 
+#define NVME_PMRCAP_REG_RDS_SHIFT			(3)
+#define NVME_PMRCAP_REG_RDS_MASK			(0x1)
+#define NVME_PMRCAP_REG_WDS_SHIFT			(4)
+#define NVME_PMRCAP_REG_WDS_MASK			(0x1)
+#define NVME_PMRCAP_REG_BIR_SHIFT			(5)
+#define NVME_PMRCAP_REG_BIR_MASK			(0x7)
+#define NVME_PMRCAP_REG_PMRTU_SHIFT			(8)
+#define NVME_PMRCAP_REG_PMRTU_MASK			(0x3)
+#define NVME_PMRCAP_REG_PMRWBM_SHIFT			(10)
+#define NVME_PMRCAP_REG_PMRWBM_MASK			(0xf)
+#define NVME_PMRCAP_REG_PMRTO_SHIFT			(16)
+#define NVME_PMRCAP_REG_PMRTO_MASK			(0xff)
+#define NVME_PMRCAP_REG_CMSS_SHIFT			(24)
+#define NVME_PMRCAP_REG_CMSS_MASK			(0x1)
+
+#define NVME_PMRCAP_RDS(x) \
+	(((x) >> NVME_PMRCAP_REG_RDS_SHIFT) & NVME_PMRCAP_REG_RDS_MASK)
+#define NVME_PMRCAP_WDS(x) \
+	(((x) >> NVME_PMRCAP_REG_WDS_SHIFT) & NVME_PMRCAP_REG_WDS_MASK)
+#define NVME_PMRCAP_BIR(x) \
+	(((x) >> NVME_PMRCAP_REG_BIR_SHIFT) & NVME_PMRCAP_REG_BIR_MASK)
+#define NVME_PMRCAP_PMRTU(x) \
+	(((x) >> NVME_PMRCAP_REG_PMRTU_SHIFT) & NVME_PMRCAP_REG_PMRTU_MASK)
+#define NVME_PMRCAP_PMRWBM(x) \
+	(((x) >> NVME_PMRCAP_REG_PMRWBM_SHIFT) & NVME_PMRCAP_REG_PMRWBM_MASK)
+#define NVME_PMRCAP_PMRTO(x) \
+	(((x) >> NVME_PMRCAP_REG_PMRTO_SHIFT) & NVME_PMRCAP_REG_PMRTO_MASK)
+#define NVME_PMRCAP_CMSS(x) \
+	(((x) >> NVME_PMRCAP_REG_CMSS_SHIFT) & NVME_PMRCAP_REG_CMSS_MASK)
+
 /* Command field definitions */
 
 #define NVME_CMD_FUSE_SHIFT				(8)
diff --git a/sys/dev/nvme/nvme_ctrlr.c b/sys/dev/nvme/nvme_ctrlr.c
index 87af51280c83..5dc434acb11a 100644
--- a/sys/dev/nvme/nvme_ctrlr.c
+++ b/sys/dev/nvme/nvme_ctrlr.c
@@ -1367,7 +1367,7 @@ nvme_ctrlr_construct(struct nvme_controller *ctrlr, device_t dev)
 	struct make_dev_args	md_args;
 	uint32_t	cap_lo;
 	uint32_t	cap_hi;
-	uint32_t	to, vs;
+	uint32_t	to, vs, pmrcap;
 	uint8_t		mpsmin;
 	int		status, timeout_period;
 
@@ -1390,21 +1390,33 @@ nvme_ctrlr_construct(struct nvme_controller *ctrlr, device_t dev)
 	cap_hi = nvme_mmio_read_4(ctrlr, cap_hi);
 	if (bootverbose) {
 		device_printf(dev, "CapHi: 0x%08x: DSTRD %u%s, CSS %x%s, "
-		    "MPSMIN %u, MPSMAX %u %s%s\n", cap_hi,
+		    "MPSMIN %u, MPSMAX %u%s%s\n", cap_hi,
 		    NVME_CAP_HI_DSTRD(cap_hi),
-		    NVME_CAP_HI_NSSRS(cap_lo) ? ", NSSRS" : "",
+		    NVME_CAP_HI_NSSRS(cap_hi) ? ", NSSRS" : "",
 		    NVME_CAP_HI_CSS(cap_hi),
-		    NVME_CAP_HI_BPS(cap_lo) ? ", BPS" : "",
+		    NVME_CAP_HI_BPS(cap_hi) ? ", BPS" : "",
 		    NVME_CAP_HI_MPSMIN(cap_hi),
 		    NVME_CAP_HI_MPSMAX(cap_hi),
-		    NVME_CAP_HI_PMRS(cap_lo) ? ", PMRS" : "",
-		    NVME_CAP_HI_CMBS(cap_lo) ? ", CMBS" : "");
+		    NVME_CAP_HI_PMRS(cap_hi) ? ", PMRS" : "",
+		    NVME_CAP_HI_CMBS(cap_hi) ? ", CMBS" : "");
 	}
 	if (bootverbose) {
 		vs = nvme_mmio_read_4(ctrlr, vs);
 		device_printf(dev, "Version: 0x%08x: %d.%d\n", vs,
 		    NVME_MAJOR(vs), NVME_MINOR(vs));
 	}
+	if (bootverbose && NVME_CAP_HI_PMRS(cap_hi)) {
+		pmrcap = nvme_mmio_read_4(ctrlr, pmrcap);
+		device_printf(dev, "PMRCap: 0x%08x: BIR %u%s%s, PMRTU %u, "
+		    "PMRWBM %x, PMRTO %u%s\n", pmrcap,
+		    NVME_PMRCAP_BIR(pmrcap),
+		    NVME_PMRCAP_RDS(pmrcap) ? ", RDS" : "",
+		    NVME_PMRCAP_WDS(pmrcap) ? ", WDS" : "",
+		    NVME_PMRCAP_PMRTU(pmrcap),
+		    NVME_PMRCAP_PMRWBM(pmrcap),
+		    NVME_PMRCAP_PMRTO(pmrcap),
+		    NVME_PMRCAP_CMSS(pmrcap) ? ", CMSS" : "");
+	}
 
 	ctrlr->dstrd = NVME_CAP_HI_DSTRD(cap_hi) + 2;