Add the 'ips' driver for the IBM (now Adaptec) ServeRAID controller

series.  This driver was generously developed and released by David
Jeffreys and Adaptec.  I've updated it to work with 5.x and fixed a
few bugs.

MFC After:	1 week

1 files changed, 636 insertions, 0 deletions

diff --git a/sys/dev/ips/ips_commands.c b/sys/dev/ips/ips_commands.c
new file mode 100644
index 0000000..6b47af5
--- /dev/null
+++ b/sys/dev/ips/ips_commands.c
@@ -0,0 +1,636 @@
+/*-
+ * Copyright (c) 2002 Adaptec Inc.
+ * All rights reserved.
+ *
+ * Written by: David Jeffery
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER 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 <dev/ips/ips.h>
+
+/*
+ * This is an interrupt callback.  It is called from
+ * interrupt context when the adapter has completed the
+ * command.  This very generic callback simply stores
+ * the command's return value in command->arg and wake's
+ * up anyone waiting on the command. 
+ */
+static void ips_wakeup_callback(ips_command_t *command)
+{
+	ips_cmd_status_t *status;
+	status = command->arg;
+	status->value = command->status.value;
+	bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_POSTWRITE);
+	mtx_lock(&command->sc->cmd_mtx);
+	wakeup(status);
+	mtx_unlock(&command->sc->cmd_mtx);
+}
+/* Below are a series of functions for sending an IO request
+ * to the adapter.  The flow order is: start, send, callback, finish.
+ * The caller must have already assembled an iorequest struct to hold
+ * the details of the IO request. */
+static void ips_io_request_finish(ips_command_t *command)
+{
+
+	struct bio *iobuf = command->arg;
+	if(ips_read_request(iobuf)) {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTREAD);
+	} else {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTWRITE);
+	}
+	bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
+	bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
+	if(COMMAND_ERROR(&command->status)){
+		iobuf->bio_flags |=BIO_ERROR;
+		iobuf->bio_error = EIO;
+	}
+	ips_insert_free_cmd(command->sc, command);
+	ipsd_finish(iobuf);
+}
+
+static void ips_io_request_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
+{
+	ips_softc_t *sc;
+	ips_command_t *command = cmdptr;
+	ips_sg_element_t *sg_list;
+	ips_io_cmd *command_struct;
+	struct bio *iobuf = command->arg;
+	int i, length = 0;
+	u_int8_t cmdtype;
+
+	sc = command->sc;
+	if(error){
+		printf("ips: error = %d in ips_sg_request_callback\n", error);
+		bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
+		bus_dmamap_destroy(command->data_dmatag, command->data_dmamap);
+		iobuf->bio_flags |= BIO_ERROR;
+		iobuf->bio_error = ENOMEM;
+		ips_insert_free_cmd(sc, command);
+		ipsd_finish(iobuf);
+		return;
+	}
+	command_struct = (ips_io_cmd *)command->command_buffer;
+	command_struct->id = command->id;
+	command_struct->drivenum = (uint32_t)iobuf->bio_driver1;
+	if(segnum != 1){
+		if(ips_read_request(iobuf))
+			cmdtype = IPS_SG_READ_CMD;
+		else
+			cmdtype = IPS_SG_WRITE_CMD;
+		command_struct->segnum = segnum;
+		sg_list = (ips_sg_element_t *)((u_int8_t *)
+			   command->command_buffer + IPS_COMMAND_LEN);
+		for(i = 0; i < segnum; i++){
+			sg_list[i].addr = segments[i].ds_addr;
+			sg_list[i].len = segments[i].ds_len;
+			length += segments[i].ds_len;
+		}
+		command_struct->buffaddr = 
+	    	    (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
+	} else {
+		if(ips_read_request(iobuf))
+			cmdtype = IPS_READ_CMD;
+		else
+			cmdtype = IPS_WRITE_CMD;
+		command_struct->buffaddr = segments[0].ds_addr;
+		length = segments[0].ds_len;
+	}
+	command_struct->command = cmdtype;
+	command_struct->lba = iobuf->bio_pblkno;
+	length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
+	command_struct->length = length;
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	if(ips_read_request(iobuf)) {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_PREREAD);
+	} else {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_PREWRITE);
+	}
+	PRINTF(10, "ips test: command id: %d segments: %d blkno: %lld "
+		"pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
+		iobuf->bio_blkno, iobuf->bio_pblkno,
+		length, segments[0].ds_len);
+
+	sc->ips_issue_cmd(command);
+	return;
+}
+
+static int ips_send_io_request(ips_command_t *command)
+{
+	ips_softc_t *sc = command->sc;
+	struct bio *iobuf = command->arg;
+	command->data_dmatag = sc->sg_dmatag;
+	if(bus_dmamap_create(command->data_dmatag, 0, &command->data_dmamap)){
+		device_printf(sc->dev, "dmamap failed\n");
+		iobuf->bio_flags |= BIO_ERROR;
+		iobuf->bio_error = ENOMEM;
+		ips_insert_free_cmd(sc, command);
+		ipsd_finish(iobuf);
+		return 0;
+	}
+	command->callback = ips_io_request_finish;
+	PRINTF(10, "ips test: : bcount %ld\n", iobuf->bio_bcount);
+	bus_dmamap_load(command->data_dmatag, command->data_dmamap,
+			iobuf->bio_data, iobuf->bio_bcount,
+			ips_io_request_callback, command, 0);
+	return 0;
+} 
+
+void ips_start_io_request(ips_softc_t *sc, struct bio *iobuf)
+{
+	if(ips_get_free_cmd(sc, ips_send_io_request, iobuf, 0)){
+		device_printf(sc->dev, "no mem for command slots!\n");
+		iobuf->bio_flags |= BIO_ERROR;
+		iobuf->bio_error = ENOMEM;
+		ipsd_finish(iobuf);
+		return;
+	}
+	return;
+}
+
+/* Below are a series of functions for sending an adapter info request 
+ * to the adapter.  The flow order is: get, send, callback. It uses
+ * the generic finish callback at the top of this file. 
+ * This can be used to get configuration/status info from the card */
+static void ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
+{
+	ips_softc_t *sc;
+	ips_command_t *command = cmdptr;
+	ips_adapter_info_cmd *command_struct;
+	sc = command->sc;
+	if(error){
+		ips_cmd_status_t * status = command->arg;
+		status->value = IPS_ERROR_STATUS; /* a lovely error value */
+		ips_insert_free_cmd(sc, command);
+		printf("ips: error = %d in ips_get_adapter_info\n", error);
+		return;
+	}
+	command_struct = (ips_adapter_info_cmd *)command->command_buffer;
+	command_struct->command = IPS_ADAPTER_INFO_CMD;
+	command_struct->id = command->id;
+	command_struct->buffaddr = segments[0].ds_addr;
+
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+			BUS_DMASYNC_PREREAD);
+	sc->ips_issue_cmd(command);
+}
+
+
+
+static int ips_send_adapter_info_cmd(ips_command_t *command)
+{
+	int error = 0;
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+
+	if (bus_dma_tag_create(	/* parent    */	sc->adapter_dmatag,
+				/* alignemnt */	1,
+				/* boundary  */	0,
+				/* lowaddr   */	BUS_SPACE_MAXADDR_32BIT,
+				/* highaddr  */	BUS_SPACE_MAXADDR,
+				/* filter    */	NULL,
+				/* filterarg */	NULL,
+				/* maxsize   */	IPS_ADAPTER_INFO_LEN,
+				/* numsegs   */	1,
+				/* maxsegsize*/	IPS_ADAPTER_INFO_LEN,
+				/* flags     */	0,
+				&command->data_dmatag) != 0) {
+                printf("ips: can't alloc dma tag for adapter status\n");
+		error = ENOMEM;
+		goto exit;
+        }
+	if(bus_dmamem_alloc(command->data_dmatag, &command->data_buffer, 
+	   BUS_DMA_NOWAIT, &command->data_dmamap)){
+		error = ENOMEM;
+		goto exit;
+	}
+	command->callback = ips_wakeup_callback;
+	mtx_lock(&sc->cmd_mtx);
+	bus_dmamap_load(command->data_dmatag, command->data_dmamap, 
+			command->data_buffer,IPS_ADAPTER_INFO_LEN, 
+			ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
+
+	if ((status->value == IPS_ERROR_STATUS) ||
+	    (msleep(status, &sc->cmd_mtx, 0, "ips", 30*hz) == EWOULDBLOCK))
+		error = ETIMEDOUT;
+	mtx_unlock(&sc->cmd_mtx);
+
+	if (error == 0) {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTREAD);
+		memcpy(&(sc->adapter_info), command->data_buffer, 
+			IPS_ADAPTER_INFO_LEN);
+	}
+	bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
+
+exit:
+	/* I suppose I should clean up my memory allocations */
+	bus_dmamem_free(command->data_dmatag, command->data_buffer, 
+			command->data_dmamap);
+	bus_dma_tag_destroy(command->data_dmatag);
+	ips_insert_free_cmd(sc, command);
+	return error;
+}
+
+int ips_get_adapter_info(ips_softc_t *sc)
+{
+	int error = 0;
+	ips_cmd_status_t *status;
+	status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_NOWAIT);
+	if(!status)
+		return ENOMEM;
+	if(ips_get_free_cmd(sc, ips_send_adapter_info_cmd, status, 
+			    IPS_NOWAIT_FLAG) > 0){
+		device_printf(sc->dev, "unable to get adapter configuration\n");
+		free(status, M_DEVBUF);
+		return ENXIO;
+	}
+	if(COMMAND_ERROR(status)){
+		error = ENXIO;
+	}
+	free(status, M_DEVBUF);
+	return error;
+}
+
+/* Below are a series of functions for sending a drive info request 
+ * to the adapter.  The flow order is: get, send, callback. It uses
+ * the generic finish callback at the top of this file. 
+ * This can be used to get drive status info from the card */
+static void ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
+{
+	ips_softc_t *sc;
+	ips_command_t *command = cmdptr;
+	ips_drive_cmd *command_struct;
+	sc = command->sc;
+	if(error){
+		ips_cmd_status_t * status = command->arg;
+                status->value = IPS_ERROR_STATUS;
+		ips_insert_free_cmd(sc, command);
+		printf("ips: error = %d in ips_get_drive_info\n", error);
+		return;
+	}
+	command_struct = (ips_drive_cmd *)command->command_buffer;
+	command_struct->command = IPS_DRIVE_INFO_CMD;
+	command_struct->id = command->id;
+	command_struct->buffaddr = segments[0].ds_addr;
+
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+			BUS_DMASYNC_PREREAD);
+	sc->ips_issue_cmd(command);
+}
+
+static int ips_send_drive_info_cmd(ips_command_t *command)
+{
+	int error = 0;
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+	ips_drive_info_t *driveinfo;
+
+	if (bus_dma_tag_create(	/* parent    */	sc->adapter_dmatag,
+				/* alignemnt */	1,
+				/* boundary  */	0,
+				/* lowaddr   */	BUS_SPACE_MAXADDR_32BIT,
+				/* highaddr  */	BUS_SPACE_MAXADDR,
+				/* filter    */	NULL,
+				/* filterarg */	NULL,
+				/* maxsize   */	IPS_DRIVE_INFO_LEN,
+				/* numsegs   */	1,
+				/* maxsegsize*/	IPS_DRIVE_INFO_LEN,
+				/* flags     */	0,
+				&command->data_dmatag) != 0) {
+                printf("ips: can't alloc dma tag for drive status\n");
+		error = ENOMEM;
+		goto exit;
+        }
+	if(bus_dmamem_alloc(command->data_dmatag, &command->data_buffer, 
+	   		    BUS_DMA_NOWAIT, &command->data_dmamap)){
+		error = ENOMEM;
+		goto exit;
+	}
+	command->callback = ips_wakeup_callback;
+	mtx_lock(&sc->cmd_mtx);
+	bus_dmamap_load(command->data_dmatag, command->data_dmamap, 
+			command->data_buffer,IPS_DRIVE_INFO_LEN, 
+			ips_drive_info_callback, command, BUS_DMA_NOWAIT);
+	if ((status->value == IPS_ERROR_STATUS) ||
+	    (msleep(status, &sc->cmd_mtx, 0, "ips", 10*hz) == EWOULDBLOCK))
+		error = ETIMEDOUT;
+	mtx_unlock(&sc->cmd_mtx);
+
+	if (error == 0) {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTREAD);
+		driveinfo = command->data_buffer;
+		memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);	
+		sc->drivecount = driveinfo->drivecount;
+		device_printf(sc->dev, "logical drives: %d\n",sc->drivecount);
+	}
+	bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
+
+exit:
+	/* I suppose I should clean up my memory allocations */
+	bus_dmamem_free(command->data_dmatag, command->data_buffer, 
+			command->data_dmamap);
+	bus_dma_tag_destroy(command->data_dmatag);
+	ips_insert_free_cmd(sc, command);
+	return error;
+
+}
+int ips_get_drive_info(ips_softc_t *sc)
+{
+	int error = 0;
+	ips_cmd_status_t *status;
+	status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_NOWAIT);
+	if(!status)
+		return ENOMEM;
+	if(ips_get_free_cmd(sc, ips_send_drive_info_cmd, status, 
+			    IPS_NOWAIT_FLAG) > 0){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "unable to get drive configuration\n");
+		return ENXIO;
+	}
+	if(COMMAND_ERROR(status)){
+		error = ENXIO;
+	}
+	free(status, M_DEVBUF);
+	return error;
+}
+
+/* Below is a pair of functions for making sure data is safely
+ * on disk by flushing the adapter's cache. */
+static int ips_send_flush_cache_cmd(ips_command_t *command)
+{
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+	ips_generic_cmd *command_struct;
+
+	PRINTF(10,"ips test: got a command, building flush command\n");
+	command->callback = ips_wakeup_callback;
+	command_struct = (ips_generic_cmd *)command->command_buffer;
+	command_struct->command = IPS_CACHE_FLUSH_CMD;
+	command_struct->id = command->id;
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	mtx_lock(&sc->cmd_mtx);
+	sc->ips_issue_cmd(command);
+	if (status->value != IPS_ERROR_STATUS)
+		msleep(status, &sc->cmd_mtx, 0, "flush2", 0);
+	mtx_unlock(&sc->cmd_mtx);
+	ips_insert_free_cmd(sc, command);
+	return 0;
+}
+
+int ips_flush_cache(ips_softc_t *sc)
+{
+	ips_cmd_status_t *status;
+	status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_NOWAIT);
+	if(!status)
+		return ENOMEM;
+	device_printf(sc->dev, "flushing cache\n");
+	if(ips_get_free_cmd(sc, ips_send_flush_cache_cmd, status, 
+			    IPS_NOWAIT_FLAG)){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "ERROR: unable to get a command! can't flush cache!\n");
+	}
+	if(COMMAND_ERROR(status)){
+		device_printf(sc->dev, "ERROR: cache flush command failed!\n");
+	}
+	free(status, M_DEVBUF);
+	return 0;
+}
+
+static void ips_write_nvram(ips_command_t *command){
+	ips_softc_t *sc = command->sc;
+	ips_rw_nvram_cmd *command_struct;
+	ips_nvram_page5 *nvram;
+
+	/*FIXME check for error */
+	command->callback = ips_wakeup_callback;
+	command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
+	command_struct->command = IPS_RW_NVRAM_CMD;
+	command_struct->id = command->id;
+	command_struct->pagenum = 5;
+	command_struct->rw	= 1; /*write*/
+	bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTREAD);
+	nvram = command->data_buffer;
+	strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
+	strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
+	nvram->operating_system = IPS_OS_FREEBSD;	
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	sc->ips_issue_cmd(command);
+}
+
+static void ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
+{
+	ips_softc_t *sc;
+	ips_command_t *command = cmdptr;
+	ips_rw_nvram_cmd *command_struct;
+	sc = command->sc;
+	if(error){
+		ips_cmd_status_t * status = command->arg;
+                status->value = IPS_ERROR_STATUS;
+		ips_insert_free_cmd(sc, command);
+		printf("ips: error = %d in ips_read_nvram_callback\n", error);
+		return;
+	}
+	command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
+	command_struct->command = IPS_RW_NVRAM_CMD;
+	command_struct->id = command->id;
+	command_struct->pagenum = 5;
+	command_struct->rw = 0;
+	command_struct->buffaddr = segments[0].ds_addr;
+
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+			BUS_DMASYNC_PREREAD);
+	sc->ips_issue_cmd(command);
+}
+
+static int ips_read_nvram(ips_command_t *command){
+	int error = 0;
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+
+	if (bus_dma_tag_create(	/* parent    */	sc->adapter_dmatag,
+				/* alignemnt */	1,
+				/* boundary  */	0,
+				/* lowaddr   */	BUS_SPACE_MAXADDR_32BIT,
+				/* highaddr  */	BUS_SPACE_MAXADDR,
+				/* filter    */	NULL,
+				/* filterarg */	NULL,
+				/* maxsize   */	IPS_NVRAM_PAGE_SIZE,
+				/* numsegs   */	1,
+				/* maxsegsize*/	IPS_NVRAM_PAGE_SIZE,
+				/* flags     */	0,
+				&command->data_dmatag) != 0) {
+                printf("ips: can't alloc dma tag for nvram\n");
+		error = ENOMEM;
+		goto exit;
+        }
+	if(bus_dmamem_alloc(command->data_dmatag, &command->data_buffer, 
+	   		    BUS_DMA_NOWAIT, &command->data_dmamap)){
+		error = ENOMEM;
+		goto exit;
+	}
+	command->callback = ips_write_nvram;
+	mtx_lock(&sc->cmd_mtx);
+	bus_dmamap_load(command->data_dmatag, command->data_dmamap, 
+			command->data_buffer,IPS_NVRAM_PAGE_SIZE, 
+			ips_read_nvram_callback, command, BUS_DMA_NOWAIT);
+	if ((status->value == IPS_ERROR_STATUS) ||
+	    (msleep(status, &sc->cmd_mtx, 0, "ips", 0) == EWOULDBLOCK))
+		error = ETIMEDOUT;
+	mtx_unlock(&sc->cmd_mtx);
+
+	if (error == 0) {
+		bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 
+				BUS_DMASYNC_POSTWRITE);
+	}
+	bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
+
+exit:
+	bus_dmamem_free(command->data_dmatag, command->data_buffer, 
+			command->data_dmamap);
+	bus_dma_tag_destroy(command->data_dmatag);
+	ips_insert_free_cmd(sc, command);
+	return error;
+}
+
+int ips_update_nvram(ips_softc_t *sc)
+{
+	ips_cmd_status_t *status;
+	status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_NOWAIT);
+	if(!status)
+		return ENOMEM;
+	if(ips_get_free_cmd(sc, ips_read_nvram, status, IPS_NOWAIT_FLAG)){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "ERROR: unable to get a command! can't update nvram\n");
+		return 1;
+	}
+	if(COMMAND_ERROR(status)){
+		device_printf(sc->dev, "ERROR: nvram update command failed!\n");
+	}
+	free(status, M_DEVBUF);
+	return 0;
+
+
+}
+
+
+static int ips_send_config_sync_cmd(ips_command_t *command)
+{
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+	ips_generic_cmd *command_struct;
+
+	PRINTF(10,"ips test: got a command, building flush command\n");
+	command->callback = ips_wakeup_callback;
+	command_struct = (ips_generic_cmd *)command->command_buffer;
+	command_struct->command = IPS_CONFIG_SYNC_CMD;
+	command_struct->id = command->id;
+	command_struct->reserve2 = IPS_POCL;
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	mtx_lock(&sc->cmd_mtx);
+	sc->ips_issue_cmd(command);
+	if (status->value != IPS_ERROR_STATUS)
+		msleep(status, &sc->cmd_mtx, 0, "ipssyn", 0);
+	mtx_unlock(&sc->cmd_mtx);
+	ips_insert_free_cmd(sc, command);
+	return 0;
+}
+
+static int ips_send_error_table_cmd(ips_command_t *command)
+{
+	ips_softc_t *sc = command->sc;
+	ips_cmd_status_t *status = command->arg;
+	ips_generic_cmd *command_struct;
+
+	PRINTF(10,"ips test: got a command, building errortable command\n");
+	command->callback = ips_wakeup_callback;
+	command_struct = (ips_generic_cmd *)command->command_buffer;
+	command_struct->command = IPS_ERROR_TABLE_CMD;
+	command_struct->id = command->id;
+	command_struct->reserve2 = IPS_CSL;
+	bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 
+			BUS_DMASYNC_PREWRITE);
+	mtx_lock(&sc->cmd_mtx);
+	sc->ips_issue_cmd(command);
+	if (status->value != IPS_ERROR_STATUS)
+		msleep(status, &sc->cmd_mtx, 0, "ipsetc", 0);
+	mtx_unlock(&sc->cmd_mtx);
+	ips_insert_free_cmd(sc, command);
+	return 0;
+}
+
+
+int ips_clear_adapter(ips_softc_t *sc)
+{
+	ips_cmd_status_t *status;
+	status = malloc(sizeof(ips_cmd_status_t), M_DEVBUF, M_NOWAIT);
+	if(!status)
+		return ENOMEM;
+	device_printf(sc->dev, "syncing config\n");
+	if(ips_get_free_cmd(sc, ips_send_config_sync_cmd, status, 
+			    IPS_NOWAIT_FLAG)){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "ERROR: unable to get a command! can't sync cache!\n");
+		return 1;
+	}
+	if(COMMAND_ERROR(status)){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "ERROR: cache sync command failed!\n");
+		return 1;
+	}
+
+	device_printf(sc->dev, "clearing error table\n");
+	if(ips_get_free_cmd(sc, ips_send_error_table_cmd, status, 
+			    IPS_NOWAIT_FLAG)){
+		free(status, M_DEVBUF);
+		device_printf(sc->dev, "ERROR: unable to get a command! can't sync cache!\n");
+		return 1;
+	}
+	if(COMMAND_ERROR(status)){
+		device_printf(sc->dev, "ERROR: etable command failed!\n");
+		free(status, M_DEVBUF);
+		return 1;
+	}
+
+	free(status, M_DEVBUF);
+	return 0;
+}