diff --git a/sys/dev/ata/ata-all.c b/sys/dev/ata/ata-all.c
index 87072ad7bf8..1ff1ce11ff2 100644
--- a/sys/dev/ata/ata-all.c
+++ b/sys/dev/ata/ata-all.c
@@ -79,9 +79,11 @@ static void ataaction(struct cam_sim *sim, union ccb *ccb);
 static void atapoll(struct cam_sim *sim);
 #endif
 static void ata_conn_event(void *, int);
+#ifndef ATA_CAM
 static void bswap(int8_t *, int);
 static void btrim(int8_t *, int);
 static void bpack(int8_t *, int8_t *, int);
+#endif
 static void ata_interrupt_locked(void *data);
 #ifdef ATA_CAM
 static void ata_periodic_poll(void *data);
@@ -90,27 +92,36 @@ static void ata_periodic_poll(void *data);
 /* global vars */
 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer");
 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL;
+#ifndef ATA_CAM
 struct intr_config_hook *ata_delayed_attach = NULL;
+#endif
 devclass_t ata_devclass;
 uma_zone_t ata_request_zone;
 uma_zone_t ata_composite_zone;
+#ifndef ATA_CAM
 int ata_wc = 1;
 int ata_setmax = 0;
+#endif
 int ata_dma_check_80pin = 1;
 
 /* local vars */
+#ifndef ATA_CAM
 static int ata_dma = 1;
 static int atapi_dma = 1;
+#endif
 
 /* sysctl vars */
 static SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters");
+#ifndef ATA_CAM
 TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RDTUN, &ata_dma, 0,
 	   "ATA disk DMA mode control");
+#endif
 TUNABLE_INT("hw.ata.ata_dma_check_80pin", &ata_dma_check_80pin);
 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma_check_80pin,
 	   CTLFLAG_RW, &ata_dma_check_80pin, 1,
 	   "Check for 80pin cable before setting ATA DMA mode");
+#ifndef ATA_CAM
 TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma);
 SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RDTUN, &atapi_dma, 0,
 	   "ATAPI device DMA mode control");
@@ -120,6 +131,7 @@ SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RDTUN, &ata_wc, 0,
 TUNABLE_INT("hw.ata.setmax", &ata_setmax);
 SYSCTL_INT(_hw_ata, OID_AUTO, setmax, CTLFLAG_RDTUN, &ata_setmax, 0,
 	   "ATA disk set max native address");
+#endif
 #ifdef ATA_CAM
 FEATURE(ata_cam, "ATA devices are accessed through the cam(4) driver");
 #endif
@@ -186,13 +198,13 @@ ata_attach(device_t dev)
 	callout_init(&ch->poll_callout, 1);
 #endif
 
+#ifndef ATA_CAM
     /* reset the controller HW, the channel and device(s) */
     while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit)
 	pause("ataatch", 1);
-#ifndef ATA_CAM
     ATA_RESET(dev);
-#endif
     ATA_LOCKING(dev, ATA_LF_UNLOCK);
+#endif
 
     /* allocate DMA resources if DMA HW present*/
     if (ch->dma.alloc)
@@ -606,6 +618,7 @@ ata_print_cable(device_t dev, u_int8_t *who)
                   "DMA limited to UDMA33, %s found non-ATA66 cable\n", who);
 }
 
+#ifndef ATA_CAM
 int
 ata_check_80pin(device_t dev, int mode)
 {
@@ -623,7 +636,9 @@ ata_check_80pin(device_t dev, int mode)
     }
     return mode;
 }
+#endif
 
+#ifndef ATA_CAM
 void
 ata_setmode(device_t dev)
 {
@@ -644,6 +659,7 @@ ata_setmode(device_t dev)
 		    (error) ? "FAILURE " : "", ata_mode2str(mode));
 	atadev->mode = mode;
 }
+#endif
 
 /*
  * device related interfaces
@@ -732,6 +748,7 @@ ata_ioctl(struct cdev *dev, u_long cmd, caddr_t data,
 }
 #endif
 
+#ifndef ATA_CAM
 int
 ata_device_ioctl(device_t dev, u_long cmd, caddr_t data)
 {
@@ -830,6 +847,7 @@ ata_device_ioctl(device_t dev, u_long cmd, caddr_t data)
 	return ENOTTY;
     }
 }
+#endif
 
 #ifndef ATA_CAM
 static void
@@ -878,6 +896,7 @@ ata_add_child(device_t parent, struct ata_device *atadev, int unit)
 }
 #endif
 
+#ifndef ATA_CAM
 int
 ata_getparam(struct ata_device *atadev, int init)
 {
@@ -983,6 +1002,7 @@ ata_getparam(struct ata_device *atadev, int init)
     }
     return error;
 }
+#endif
 
 #ifndef ATA_CAM
 int
@@ -1188,6 +1208,7 @@ ata_udelay(int interval)
 	pause("ataslp", interval/(1000000/hz));
 }
 
+#ifndef ATA_CAM
 char *
 ata_unit2str(struct ata_device *atadev)
 {
@@ -1200,6 +1221,7 @@ ata_unit2str(struct ata_device *atadev)
 	sprintf(str, "%s", atadev->unit == ATA_MASTER ? "master" : "slave");
     return str;
 }
+#endif
 
 const char *
 ata_mode2str(int mode)
@@ -1260,6 +1282,7 @@ ata_str2mode(const char *str)
 	return (-1);
 }
 
+#ifndef ATA_CAM
 const char *
 ata_satarev2str(int rev)
 {
@@ -1272,6 +1295,7 @@ ata_satarev2str(int rev)
 	default: return "???";
 	}
 }
+#endif
 
 int
 ata_atapi(device_t dev, int target)
@@ -1281,6 +1305,7 @@ ata_atapi(device_t dev, int target)
     return (ch->devices & (ATA_ATAPI_MASTER << target));
 }
 
+#ifndef ATA_CAM
 int
 ata_pmode(struct ata_params *ap)
 {
@@ -1304,7 +1329,9 @@ ata_pmode(struct ata_params *ap)
 	return ATA_PIO0;
     return ATA_PIO0;
 }
+#endif
 
+#ifndef ATA_CAM
 int
 ata_wmode(struct ata_params *ap)
 {
@@ -1316,7 +1343,9 @@ ata_wmode(struct ata_params *ap)
 	return ATA_WDMA0;
     return -1;
 }
+#endif
 
+#ifndef ATA_CAM
 int
 ata_umode(struct ata_params *ap)
 {
@@ -1338,7 +1367,9 @@ ata_umode(struct ata_params *ap)
     }
     return -1;
 }
+#endif
 
+#ifndef ATA_CAM
 int
 ata_limit_mode(device_t dev, int mode, int maxmode)
 {
@@ -1358,7 +1389,9 @@ ata_limit_mode(device_t dev, int mode, int maxmode)
 
     return mode;
 }
+#endif
 
+#ifndef ATA_CAM
 static void
 bswap(int8_t *buf, int len)
 {
@@ -1367,7 +1400,9 @@ bswap(int8_t *buf, int len)
     while (--ptr >= (u_int16_t*)buf)
 	*ptr = ntohs(*ptr);
 }
+#endif
 
+#ifndef ATA_CAM
 static void
 btrim(int8_t *buf, int len)
 {
@@ -1379,7 +1414,9 @@ btrim(int8_t *buf, int len)
     for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr)
 	*ptr = 0;
 }
+#endif
 
+#ifndef ATA_CAM
 static void
 bpack(int8_t *src, int8_t *dst, int len)
 {
@@ -1402,6 +1439,7 @@ bpack(int8_t *src, int8_t *dst, int len)
     if (j < len)
 	dst[j] = 0x00;
 }
+#endif
 
 #ifdef ATA_CAM
 void
diff --git a/sys/dev/ata/ata-cbus.c b/sys/dev/ata/ata-cbus.c
index eb932ba8619..0508083159d 100644
--- a/sys/dev/ata/ata-cbus.c
+++ b/sys/dev/ata/ata-cbus.c
@@ -339,11 +339,14 @@ static int
 ata_cbuschannel_banking(device_t dev, int flags)
 {
     struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
+#ifndef ATA_CAM
     struct ata_channel *ch = device_get_softc(dev);
+#endif
     int res;
 
     mtx_lock(&ctlr->bank_mtx);
     switch (flags) {
+#ifndef ATA_CAM
     case ATA_LF_LOCK:
 	if (ctlr->locked_bank == -1)
 	    ctlr->locked_bank = ch->unit;
@@ -368,6 +371,7 @@ ata_cbuschannel_banking(device_t dev, int flags)
 	    }
 	}
 	break;
+#endif
 
     case ATA_LF_WHICH:
 	break;
@@ -385,8 +389,10 @@ static device_method_t ata_cbuschannel_methods[] = {
     DEVMETHOD(device_suspend,   ata_cbuschannel_suspend),
     DEVMETHOD(device_resume,    ata_cbuschannel_resume),
 
+#ifndef ATA_CAM
     /* ATA methods */
     DEVMETHOD(ata_locking,      ata_cbuschannel_banking),
+#endif
     { 0, 0 }
 };
 
diff --git a/sys/dev/ata/ata-pci.c b/sys/dev/ata/ata-pci.c
index 73f051b6309..b22b5e26319 100644
--- a/sys/dev/ata/ata-pci.c
+++ b/sys/dev/ata/ata-pci.c
@@ -699,6 +699,7 @@ ata_pcichannel_resume(device_t dev)
 }
 
 
+#ifndef ATA_CAM
 static int
 ata_pcichannel_locking(device_t dev, int mode)
 {
@@ -710,6 +711,7 @@ ata_pcichannel_locking(device_t dev, int mode)
     else
 	return ch->unit;
 }
+#endif
 
 static void
 ata_pcichannel_reset(device_t dev)
@@ -766,7 +768,9 @@ static device_method_t ata_pcichannel_methods[] = {
     /* ATA methods */
     DEVMETHOD(ata_setmode,      ata_pcichannel_setmode),
     DEVMETHOD(ata_getrev,       ata_pcichannel_getrev),
+#ifndef ATA_CAM
     DEVMETHOD(ata_locking,      ata_pcichannel_locking),
+#endif
     DEVMETHOD(ata_reset,        ata_pcichannel_reset),
 
     { 0, 0 }
diff --git a/sys/dev/ata/ata-pci.h b/sys/dev/ata/ata-pci.h
index 43a4950e1c7..81aee6aebd2 100644
--- a/sys/dev/ata/ata-pci.h
+++ b/sys/dev/ata/ata-pci.h
@@ -62,7 +62,9 @@ struct ata_pci_controller {
     int                 (*ch_detach)(device_t);
     int                 (*ch_suspend)(device_t);
     int                 (*ch_resume)(device_t);
+#ifndef ATA_CAM
     int                 (*locking)(device_t, int);
+#endif
     void                (*reset)(device_t);
     int                 (*setmode)(device_t, int, int);
     int                 (*getrev)(device_t, int);
diff --git a/sys/dev/ata/ata-queue.c b/sys/dev/ata/ata-queue.c
index a58423be9d7..070d7113f9f 100644
--- a/sys/dev/ata/ata-queue.c
+++ b/sys/dev/ata/ata-queue.c
@@ -43,11 +43,14 @@ __FBSDID("$FreeBSD$");
 #include <dev/ata/ata-all.h>
 #include <ata_if.h>
 
+#ifndef ATA_CAM
 /* prototypes */
 static void ata_completed(void *, int);
 static void ata_sort_queue(struct ata_channel *ch, struct ata_request *request);
-static char *ata_skey2str(u_int8_t);
+static const char *ata_skey2str(u_int8_t);
+#endif
 
+#ifndef ATA_CAM
 void
 ata_queue_request(struct ata_request *request)
 {
@@ -123,7 +126,9 @@ ata_queue_request(struct ata_request *request)
 	sema_destroy(&request->done);
     }
 }
+#endif
 
+#ifndef ATA_CAM
 int
 ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature,
 	       u_int64_t lba, u_int16_t count)
@@ -153,7 +158,9 @@ ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature,
     }
     return error;
 }
+#endif
 
+#ifndef ATA_CAM
 int
 ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
 	     int count, int flags, int timeout)
@@ -176,7 +183,9 @@ ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data,
     }
     return error;
 }
+#endif
 
+#ifndef ATA_CAM
 void
 ata_start(device_t dev)
 {
@@ -235,7 +244,9 @@ ata_start(device_t dev)
 	}
     }
 }
+#endif
 
+#ifndef ATA_CAM
 void
 ata_finish(struct ata_request *request)
 {
@@ -263,7 +274,9 @@ ata_finish(struct ata_request *request)
 	}
     }
 }
+#endif
 
+#ifndef ATA_CAM
 static void
 ata_completed(void *context, int dummy)
 {
@@ -495,6 +508,7 @@ ata_completed(void *context, int dummy)
     if (ch)
 	ata_start(ch->dev);
 }
+#endif
 
 void
 ata_timeout(struct ata_request *request)
@@ -520,8 +534,8 @@ ata_timeout(struct ata_request *request)
 	ata_cam_end_transaction(ch->dev, request);
 #endif
 	mtx_unlock(&ch->state_mtx);
-	ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
 #ifndef ATA_CAM
+	ATA_LOCKING(ch->dev, ATA_LF_UNLOCK);
 	ata_finish(request);
 #endif
     }
@@ -530,6 +544,7 @@ ata_timeout(struct ata_request *request)
     }
 }
 
+#ifndef ATA_CAM
 void
 ata_fail_requests(device_t dev)
 {
@@ -568,7 +583,9 @@ ata_fail_requests(device_t dev)
         ata_finish(request);
     }
 }
+#endif
 
+#ifndef ATA_CAM
 /*
  * Rudely drop all requests queued to the channel of specified device.
  * XXX: The requests are leaked, use only in fatal case.
@@ -586,7 +603,9 @@ ata_drop_requests(device_t dev)
     }
     mtx_unlock(&ch->queue_mtx);
 }
+#endif
 
+#ifndef ATA_CAM
 static u_int64_t
 ata_get_lba(struct ata_request *request)
 {
@@ -608,7 +627,9 @@ ata_get_lba(struct ata_request *request)
     else
 	return request->u.ata.lba;
 }
+#endif
 
+#ifndef ATA_CAM
 static void
 ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
 {
@@ -661,6 +682,7 @@ ata_sort_queue(struct ata_channel *ch, struct ata_request *request)
 	ch->freezepoint = request;
     TAILQ_INSERT_AFTER(&ch->ata_queue, this, request, chain);
 }
+#endif
 
 char *
 ata_cmd2str(struct ata_request *request)
@@ -776,7 +798,8 @@ ata_cmd2str(struct ata_request *request)
     return buffer;
 }
 
-static char *
+#ifndef ATA_CAM
+static const char *
 ata_skey2str(u_int8_t skey)
 {
     switch (skey) {
@@ -799,3 +822,4 @@ ata_skey2str(u_int8_t skey)
     default: return("UNKNOWN");
     }
 }
+#endif
diff --git a/sys/dev/ata/chipsets/ata-acard.c b/sys/dev/ata/chipsets/ata-acard.c
index 06ca004a55c..d53fc28a9a0 100644
--- a/sys/dev/ata/chipsets/ata-acard.c
+++ b/sys/dev/ata/chipsets/ata-acard.c
@@ -51,26 +51,29 @@ __FBSDID("$FreeBSD$");
 #include <dev/ata/ata-pci.h>
 #include <ata_if.h>
 
+#ifndef ATA_CAM
 struct ata_serialize {
     struct mtx  locked_mtx;
     int         locked_ch;
     int         restart_ch;
 };
+#endif
 
 /* local prototypes */
 static int ata_acard_chipinit(device_t dev);
-static int ata_acard_chipdeinit(device_t dev);
 static int ata_acard_ch_attach(device_t dev);
 static int ata_acard_status(device_t dev);
 static int ata_acard_850_setmode(device_t dev, int target, int mode);
 static int ata_acard_86X_setmode(device_t dev, int target, int mode);
+#ifndef ATA_CAM
+static int ata_acard_chipdeinit(device_t dev);
 static int ata_serialize(device_t dev, int flags);
 static void ata_serialize_init(struct ata_serialize *serial);
+#endif
 
 /* misc defines */
 #define ATP_OLD		1
 
-
 /*
  * Acard chipset support functions
  */
@@ -94,7 +97,9 @@ ata_acard_probe(device_t dev)
 
     ata_set_desc(dev);
     ctlr->chipinit = ata_acard_chipinit;
+#ifndef ATA_CAM
     ctlr->chipdeinit = ata_acard_chipdeinit;
+#endif
     return (BUS_PROBE_DEFAULT);
 }
 
@@ -102,7 +107,9 @@ static int
 ata_acard_chipinit(device_t dev)
 {
     struct ata_pci_controller *ctlr = device_get_softc(dev);
+#ifndef ATA_CAM
     struct ata_serialize *serial;
+#endif
 
     if (ata_setup_interrupt(dev, ata_generic_intr))
 	return ENXIO;
@@ -111,17 +118,20 @@ ata_acard_chipinit(device_t dev)
     ctlr->ch_detach = ata_pci_ch_detach;
     if (ctlr->chip->cfg1 == ATP_OLD) {
 	ctlr->setmode = ata_acard_850_setmode;
+#ifndef ATA_CAM
 	ctlr->locking = ata_serialize;
 	serial = malloc(sizeof(struct ata_serialize),
 			      M_ATAPCI, M_WAITOK | M_ZERO);
 	ata_serialize_init(serial);
 	ctlr->chipset_data = serial;
+#endif
     }
     else
 	ctlr->setmode = ata_acard_86X_setmode;
     return 0;
 }
 
+#ifndef ATA_CAM
 static int
 ata_acard_chipdeinit(device_t dev)
 {
@@ -136,6 +146,7 @@ ata_acard_chipdeinit(device_t dev)
 	}
 	return (0);
 }
+#endif
 
 static int
 ata_acard_ch_attach(device_t dev)
@@ -228,6 +239,7 @@ ata_acard_86X_setmode(device_t dev, int target, int mode)
 	return (mode);
 }
 
+#ifndef ATA_CAM
 static void
 ata_serialize_init(struct ata_serialize *serial)
 {
@@ -277,5 +289,6 @@ ata_serialize(device_t dev, int flags)
     mtx_unlock(&serial->locked_mtx);
     return res;
 }
+#endif
 
 ATA_DECLARE_DRIVER(ata_acard);