diff --git a/sys/sparc64/include/bus_common.h b/sys/sparc64/include/bus_common.h
index de6b22cbe6ea..e2ea4e9984b4 100644
--- a/sys/sparc64/include/bus_common.h
+++ b/sys/sparc64/include/bus_common.h
@@ -65,7 +65,7 @@
 	((inr) & INTMAP_INR_MASK))
 
 /* counter-timer support. */
-void sparc64_counter_init(bus_space_tag_t tag, bus_space_handle_t handle,
-    bus_addr_t offset);
+void sparc64_counter_init(const char *name, bus_space_tag_t tag,
+    bus_space_handle_t handle, bus_addr_t offset);
 
 #endif	/* !_MACHINE_BUS_COMMON_H_ */
diff --git a/sys/sparc64/include/iommuvar.h b/sys/sparc64/include/iommuvar.h
index 792a8235b7a9..644a3fa20aef 100644
--- a/sys/sparc64/include/iommuvar.h
+++ b/sys/sparc64/include/iommuvar.h
@@ -31,7 +31,7 @@
  */
 
 #ifndef _MACHINE_IOMMUVAR_H_
-#define _MACHINE_IOMMUVAR_H_
+#define	_MACHINE_IOMMUVAR_H_
 
 #define	IO_PAGE_SIZE		PAGE_SIZE_8K
 #define	IO_PAGE_MASK		PAGE_MASK_8K
@@ -62,10 +62,10 @@ struct iommu_state {
 	struct rman		is_dvma_rman;	/* DVMA space rman */
 	struct iommu_maplruq_head is_maplruq;	/* (i) LRU queue */
 	vm_paddr_t		is_ptsb;	/* (r) TSB physical address */
-	u_int64_t		*is_tsb;	/* (*i) TSB virtual address */
+	uint64_t		*is_tsb;	/* (*i) TSB virtual address */
 	int			is_tsbsize;	/* (r) 0 = 8K, ... */
-	u_int64_t		is_pmaxaddr;	/* (r) max. physical address */
-	u_int64_t		is_dvmabase;	/* (r) */
+	uint64_t		is_pmaxaddr;	/* (r) max. physical address */
+	uint64_t		is_dvmabase;	/* (r) */
 	int64_t			is_cr;		/* (r) Control reg value */
 
 	vm_paddr_t		is_flushpa[2];	/* (r) */
@@ -99,9 +99,10 @@ struct iommu_state {
 };
 
 /* interfaces for PCI/SBus code */
-void iommu_init(char *, struct iommu_state *, int, u_int32_t, int);
-void iommu_reset(struct iommu_state *);
-void iommu_decode_fault(struct iommu_state *, vm_offset_t);
+void iommu_init(const char *name, struct iommu_state *is, int tsbsize,
+    uint32_t iovabase, int resvpg);
+void iommu_reset(struct iommu_state *is);
+void iommu_decode_fault(struct iommu_state *is, vm_offset_t phys);
 
 extern struct bus_dma_methods iommu_dma_methods;
 
diff --git a/sys/sparc64/pci/psycho.c b/sys/sparc64/pci/psycho.c
index 4ea8d736f35c..034e794a356d 100644
--- a/sys/sparc64/pci/psycho.c
+++ b/sys/sparc64/pci/psycho.c
@@ -345,7 +345,7 @@ psycho_attach(device_t dev)
 
 	/*
 	 * Match other Psycho's that are already configured against
-	 * the base physical address. This will be the same for a
+	 * the base physical address.  This will be the same for a
 	 * pair of devices that share register space.
 	 */
 	osc = NULL;
@@ -464,8 +464,8 @@ psycho_attach(device_t dev)
 	nrange = OF_getprop_alloc(node, "ranges", sizeof(*range),
 	    (void **)&range);
 	/*
-	 * Make sure that the expected ranges are present. The OFW_PCI_CS_MEM64
-	 * one is not currently used though.
+	 * Make sure that the expected ranges are present.  The
+	 * OFW_PCI_CS_MEM64 one is not currently used though.
 	 */
 	if (nrange != PSYCHO_NRANGE)
 		panic("%s: unsupported number of ranges", __func__);
@@ -510,7 +510,7 @@ psycho_attach(device_t dev)
 #ifdef PSYCHO_DEBUG
 			/*
 			 * Enable all interrupts and clear all interrupt
-			 * states. This aids the debugging of interrupt
+			 * states.  This aids the debugging of interrupt
 			 * routing problems.
 			 */
 			device_printf(dev,
@@ -571,7 +571,8 @@ psycho_attach(device_t dev)
 #endif /* PSYCHO_MAP_WAKEUP */
 
 			/* Initialize the counter-timer. */
-			sparc64_counter_init(rman_get_bustag(sc->sc_mem_res),
+			sparc64_counter_init(device_get_nameunit(dev),
+			    rman_get_bustag(sc->sc_mem_res),
 			    rman_get_bushandle(sc->sc_mem_res), PSR_TC0);
 		}
 
@@ -610,7 +611,7 @@ psycho_attach(device_t dev)
 
 	/*
 	 * Register a PCI bus error interrupt handler according to which
-	 * half this is. Hummingbird/Sabre don't have a PCI bus B error
+	 * half this is.  Hummingbird/Sabre don't have a PCI bus B error
 	 * interrupt but they are also only used for PCI bus A.
 	 */
 	psycho_set_intr(sc, 0, sc->sc_half == 0 ? PSR_PCIAERR_INT_MAP :
@@ -666,8 +667,8 @@ psycho_attach(device_t dev)
 	/*
 	 * On E250 the interrupt map entry for the EBus bridge is wrong,
 	 * causing incorrect interrupts to be assigned to some devices on
-	 * the EBus. Work around it by changing our copy of the interrupt
-	 * map mask to perform a full comparison of the INO. That way
+	 * the EBus.  Work around it by changing our copy of the interrupt
+	 * map mask to perform a full comparison of the INO.  That way
 	 * the interrupt map entry for the EBus bridge won't match at all
 	 * and the INOs specified in the "interrupts" properties of the
 	 * EBus devices will be used directly instead.
@@ -782,7 +783,7 @@ psycho_ue(void *arg)
 	/*
 	 * On the UltraSPARC-IIi/IIe, IOMMU misses/protection faults cause
 	 * the AFAR to be set to the physical address of the TTE entry that
-	 * was invalid/write protected. Call into the iommu code to have
+	 * was invalid/write protected.  Call into the IOMMU code to have
 	 * them decoded to virtual I/O addresses.
 	 */
 	if ((afsr & UEAFSR_P_DTE) != 0)
@@ -871,7 +872,6 @@ psycho_wakeup(void *arg)
 static void
 psycho_iommu_init(struct psycho_softc *sc, int tsbsize, uint32_t dvmabase)
 {
-	char *name;
 	struct iommu_state *is = sc->sc_is;
 
 	/* Punch in our copies. */
@@ -884,13 +884,7 @@ psycho_iommu_init(struct psycho_softc *sc, int tsbsize, uint32_t dvmabase)
 	is->is_dva = PSR_IOMMU_SVADIAG;
 	is->is_dtcmp = PSR_IOMMU_TLB_CMP_DIAG;
 
-	/* Give us a nice name... */
-	name = malloc(32, M_DEVBUF, M_NOWAIT);
-	if (name == NULL)
-		panic("%s: could not malloc iommu name", __func__);
-	snprintf(name, 32, "%s dvma", device_get_nameunit(sc->sc_dev));
-
-	iommu_init(name, is, tsbsize, dvmabase, 0);
+	iommu_init(device_get_nameunit(sc->sc_dev), is, tsbsize, dvmabase, 0);
 }
 
 static int
@@ -921,10 +915,10 @@ psycho_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
 	 * only allow their config space to be accessed using the
 	 * "native" width of the respective register being accessed
 	 * and return semi-random other content of their config space
-	 * otherwise. Given that the PCI specs don't say anything
+	 * otherwise.  Given that the PCI specs don't say anything
 	 * about such a (unusual) limitation and lots of stuff expects
 	 * to be able to access the contents of the config space at
-	 * any width we allow just that. We do this by using a copy
+	 * any width we allow just that.  We do this by using a copy
 	 * of the header of the bridge (the rest is all zero anyway)
 	 * read during attach (expect for PCIR_STATUS) in order to
 	 * simplify things.
@@ -1027,7 +1021,7 @@ psycho_route_interrupt(device_t bridge, device_t dev, int pin)
 	/*
 	 * If this is outside of the range for an intpin, it's likely a full
 	 * INO, and no mapping is required at all; this happens on the U30,
-	 * where there's no interrupt map at the Psycho node. Fortunately,
+	 * where there's no interrupt map at the Psycho node.  Fortunately,
 	 * there seem to be no INOs in the intpin range on this boxen, so
 	 * this easy heuristics will do.
 	 */
@@ -1035,7 +1029,7 @@ psycho_route_interrupt(device_t bridge, device_t dev, int pin)
 		return (pin);
 	/*
 	 * Guess the INO; we always assume that this is a non-OBIO
-	 * device, and that pin is a "real" intpin number. Determine
+	 * device, and that pin is a "real" intpin number.  Determine
 	 * the mapping register to be used by the slot number.
 	 * We only need to do this on E450s, it seems; here, the slot numbers
 	 * for bus A are one-based, while those for bus B seemingly have an
@@ -1146,7 +1140,7 @@ psycho_setup_intr(device_t dev, device_t child, struct resource *ires,
 	/*
 	 * The Sabre-APB-combination has a bug where it does not drain
 	 * DMA write data for devices behind additional PCI-PCI bridges
-	 * underneath the APB PCI-PCI bridge. The workaround is to do
+	 * underneath the APB PCI-PCI bridge.  The workaround is to do
 	 * a read on the farest PCI-PCI bridge followed by a read of the
 	 * PCI DMA write sync register of the Sabre.
 	 * XXX installing the wrapper for an affected device and the
@@ -1260,10 +1254,10 @@ psycho_alloc_resource(device_t bus, device_t child, int type, int *rid,
 	if (type == SYS_RES_IRQ) {
 		/*
 		 * XXX: Don't accept blank ranges for now, only single
-		 * interrupts. The other case should not happen with the
-		 * MI PCI code...
+		 * interrupts.  The other case should not happen with
+		 * the MI PCI code...
 		 * XXX: This may return a resource that is out of the
-		 * range that was specified. Is this correct...?
+		 * range that was specified.  Is this correct...?
 		 */
 		if (start != end)
 			panic("%s: XXX: interrupt range", __func__);
diff --git a/sys/sparc64/sbus/sbus.c b/sys/sparc64/sbus/sbus.c
index 3eac88087705..b5d506f4c211 100644
--- a/sys/sparc64/sbus/sbus.c
+++ b/sys/sparc64/sbus/sbus.c
@@ -309,7 +309,6 @@ sbus_attach(device_t dev)
 	device_t cdev;
 	bus_addr_t intrclr, intrmap, phys;
 	bus_size_t size;
-	char *name;
 	u_long vec;
 	phandle_t child, node;
 	int clock, i, intr, rid;
@@ -401,18 +400,12 @@ sbus_attach(device_t dev)
 	sc->sc_is.is_sb[0] = SBR_STRBUF;
 	sc->sc_is.is_sb[1] = 0;
 
-	/* give us a nice name.. */
-	name = (char *)malloc(32, M_DEVBUF, M_NOWAIT);
-	if (name == NULL)
-		panic("%s: cannot malloc iommu name", __func__);
-	snprintf(name, 32, "%s dvma", device_get_name(dev));
-
 	/*
 	 * Note: the SBus IOMMU ignores the high bits of an address, so a NULL
 	 * DMA pointer will be translated by the first page of the IOTSB.
 	 * To detect bugs we'll allocate and ignore the first entry.
 	 */
-	iommu_init(name, &sc->sc_is, 3, -1, 1);
+	iommu_init(device_get_nameunit(dev), &sc->sc_is, 3, -1, 1);
 
 	/* Create the DMA tag. */
 	if (bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0,
@@ -473,7 +466,8 @@ sbus_attach(device_t dev)
 		panic("%s: failed to set up power fail interrupt", __func__);
 
 	/* Initialize the counter-timer. */
-	sparc64_counter_init(rman_get_bustag(sc->sc_sysio_res),
+	sparc64_counter_init(device_get_nameunit(dev),
+	    rman_get_bustag(sc->sc_sysio_res),
 	    rman_get_bushandle(sc->sc_sysio_res), SBR_TC0);
 
 	/*
diff --git a/sys/sparc64/sparc64/counter.c b/sys/sparc64/sparc64/counter.c
index 3e934659f9b0..cb9241a18943 100644
--- a/sys/sparc64/sparc64/counter.c
+++ b/sys/sparc64/sparc64/counter.c
@@ -21,10 +21,11 @@
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
  */
 
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
 #include <sys/param.h>
 #include <sys/bus.h>
 #include <sys/malloc.h>
@@ -53,7 +54,7 @@
 #define	CTR_LIMIT	0x08
 
 
-static unsigned int counter_get_timecount(struct timecounter *tc);
+static timecounter_get_t counter_get_timecount;
 
 struct ct_softc {
 	bus_space_tag_t		sc_tag;
@@ -63,21 +64,22 @@ struct ct_softc {
 
 
 /*
- * This is called from the psycho and sbus drivers. It does not directly attach
- * to the nexus because it shares register space with the bridge in question.
+ * This is called from the psycho and sbus drivers.  It does not directly
+ * attach to the nexus because it shares register space with the bridge in
+ * question.
  */
 void
-sparc64_counter_init(bus_space_tag_t tag, bus_space_handle_t handle,
-    bus_addr_t offset)
+sparc64_counter_init(const char *name, bus_space_tag_t tag,
+    bus_space_handle_t handle, bus_addr_t offset)
 {
 	struct timecounter *tc;
 	struct ct_softc *sc;
 
 	printf("initializing counter-timer\n");
 	/*
-	 * Turn off interrupts from both counters. Set the limit to the maximum
-	 * value (although that should not change anything with CTLR_INTEN and
-	 * CTLR_PERIODIC off).
+	 * Turn off interrupts from both counters.  Set the limit to the
+	 * maximum value (although that should not change anything with
+	 * CTLR_INTEN and CTLR_PERIODIC off).
 	 */
 	bus_space_write_8(tag, handle, offset + CTR_CT0 + CTR_LIMIT,
 	    COUNTER_MASK);
@@ -93,7 +95,7 @@ sparc64_counter_init(bus_space_tag_t tag, bus_space_handle_t handle,
 	tc->tc_poll_pps = NULL;
 	tc->tc_counter_mask = COUNTER_MASK;
 	tc->tc_frequency = COUNTER_FREQ;
-	tc->tc_name = "counter-timer";
+	tc->tc_name = strdup(name, M_DEVBUF);
 	tc->tc_priv = sc;
 	tc->tc_quality = COUNTER_QUALITY;
 	tc_init(tc);
diff --git a/sys/sparc64/sparc64/iommu.c b/sys/sparc64/sparc64/iommu.c
index 1583e4ae23da..d1030205d4d3 100644
--- a/sys/sparc64/sparc64/iommu.c
+++ b/sys/sparc64/sparc64/iommu.c
@@ -283,12 +283,12 @@ iommu_map_remq(struct iommu_state *is, bus_dmamap_t map)
  *	- create a private DVMA map.
  */
 void
-iommu_init(char *name, struct iommu_state *is, int tsbsize, u_int32_t iovabase,
-    int resvpg)
+iommu_init(const char *name, struct iommu_state *is, int tsbsize,
+    uint32_t iovabase, int resvpg)
 {
 	vm_size_t size;
 	vm_offset_t offs;
-	u_int64_t end;
+	uint64_t end;
 	int i;
 
 	/*
@@ -1177,7 +1177,7 @@ static void
 iommu_diag(struct iommu_state *is, vm_offset_t va)
 {
 	int i;
-	u_int64_t tag, data;
+	uint64_t data, tag;
 
 	IS_LOCK_ASSERT(is);
 	IOMMU_WRITE8(is, is_dva, 0, trunc_io_page(va));