Sync 3ware time at boot to system rtc

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index cd4129f..28952c6 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -91,6 +91,7 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/time.h>
+#include <linux/rtc.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <asm/io.h>
@@ -462,6 +464,93 @@ out:
 	return retval;
 } /* End twa_aen_severity_lookup() */
 
+static void twa_time(u8 *buf)
+{
+	struct timeval utc;
+	u64 local_time;
+	struct rtc_time tm;
+	u16 year;
+
+	do_gettimeofday(&utc);
+	local_time = (u64)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
+
+	rtc_time64_to_tm(local_time, &tm);
+
+	
+	buf[0] = 0x00; /* Unknown  always reads 0 */
+	buf[1] = tm.tm_sec;
+	buf[2] = tm.tm_min;
+	buf[3] = tm.tm_hour;
+	
+	buf[4] = tm.tm_mday;
+	buf[5] = tm.tm_mon + 1;
+
+	year = cpu_to_le16(tm.tm_year + 1900);
+	memcpy(&buf[6], &year, sizeof(year));
+}
+
+static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes);
+
+
+static void twa_print_date_time(TW_Device_Extension *tw_dev, int request_id)
+{
+	u8 *buf=twa_get_param(tw_dev,1,TW_TIMEKEEP_TABLE,0x4,0x8);
+	u16 year;
+
+	if (!buf) {
+		printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: Can't read controller date and time\n",
+				tw_dev->host->host_no);
+		return;
+	}
+
+	memcpy(&year, &buf[6], sizeof(year));
+
+	year = le16_to_cpu(year);
+
+	printk(KERN_WARNING "3w-9xxx: scsi%d: controller time %02d-%02d-%04d %02d:%02d:%02d\n",
+			tw_dev->host->host_no,
+			(int) buf[4],
+			(int) buf[5],
+			(int) year,
+			(int) buf[3],
+			(int) buf[2],
+			(int) buf[1]);
+}
+
+/* This function will sync firmware time with the host time */
+static void twa_aen_sync_date_time(TW_Device_Extension *tw_dev, int request_id)
+{
+	TW_Command_Full *full_command_packet;
+	TW_Command *command_packet;
+	TW_Param_Apache *param;
+	/* Fill out the command packet */
+	full_command_packet = tw_dev->command_packet_virt[request_id];
+	memset(full_command_packet, 0, sizeof(TW_Command_Full));
+	command_packet = &full_command_packet->command.oldcommand;
+	command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
+	command_packet->request_id = request_id;
+	command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
+	command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE);
+	command_packet->size = TW_COMMAND_SIZE;
+	command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
+
+	/* Setup the param */
+	param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
+	memset(param, 0, TW_SECTOR_SIZE);
+	param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */
+	param->parameter_id = cpu_to_le16(0x4); /* SchedulerTime */
+	param->parameter_size_bytes = cpu_to_le16(8);
+
+	twa_time(param->data);
+
+	/* Mark internal command */
+	tw_dev->srb[request_id] = NULL;
+
+	/* Now post the command */
+	twa_post_command_packet(tw_dev, request_id, 1);
+} /* End twa_aen_sync_date_time() */
+
+
 /* This function will sync firmware time with the host time */
 static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
 {
@@ -2121,6 +2210,21 @@ static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
 	       le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE,
 				     TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH)));
 
+	twa_print_date_time(tw_dev, 0);
+
+	/* Set clock */
+	twa_aen_sync_date_time(tw_dev, 0);
+
+	/* Poll for completion */
+	if (twa_poll_response(tw_dev, 0, 30))
+		printk(KERN_WARNING "3w-9xxx: scsi%d: no response to set time\n",
+				host->host_no);
+	else 
+		printk(KERN_WARNING "3w-9xxx: scsi%d: setting clock\n",
+				host->host_no);
+
+	twa_print_date_time(tw_dev, 0);
+
 	/* Try to enable MSI */
 	if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) &&
 	    !pci_enable_msi(pdev))