scsi: aacraid: Added ioctl to trigger IOP/IWBR reset

Added a new ioctl interface to trigger an IOP or IWBR reset from ioctl.
Primary used by management utility to trigger resets.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/aacraid/aacraid.h

@@ -2333,6 +2333,7 @@ struct revision
 #define FSACTL_FORCE_DELETE_DISK		CTL_CODE(2120, METHOD_NEITHER)
 #define FSACTL_GET_CONTAINERS			2131
 #define FSACTL_SEND_LARGE_FIB			CTL_CODE(2138, METHOD_BUFFERED)
+#define FSACTL_RESET_IOP			CTL_CODE(2140, METHOD_BUFFERED)
 /* flags defined for IOP & HW SOFT RESET */
 #define HW_IOP_RESET				0x01
 #define HW_SOFT_RESET				0x02

drivers/scsi/aacraid/commctrl.c

@@ -1011,7 +1011,22 @@ static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
 	}
 	return 0;
 }
+struct aac_reset_iop {
+	u8	reset_type;
+};
 
+static int aac_send_reset_adapter(struct aac_dev *dev, void __user *arg)
+{
+	struct aac_reset_iop reset;
+	int retval;
+
+	if (copy_from_user((void *)&reset, arg, sizeof(struct aac_reset_iop)))
+		return -EFAULT;
+
+	retval = aac_reset_adapter(dev, 0, reset.reset_type);
+	return retval;
+
+}
 
 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 {
@@ -1055,6 +1070,10 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 	case FSACTL_GET_PCI_INFO:
 		status = aac_get_pci_info(dev,arg);
 		break;
+	case FSACTL_RESET_IOP:
+		status = aac_send_reset_adapter(dev, arg);
+		break;
+
 	default:
 		status = -ENOTTY;
 		break;