1 files changed, 25 insertions, 5 deletions

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 42484417cef7..4ab07861b457 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -15,11 +15,7 @@
 #define AAC_MAX_LUN             (8)
 
 #define AAC_MAX_HOSTPHYSMEMPAGES (0xfffff)
-/*
- *  max_sectors is an unsigned short, otherwise limit is 0x100000000 / 512
- * Linux has starvation problems if we permit larger than 4MB I/O ...
- */
-#define AAC_MAX_32BIT_SGBCOUNT  ((unsigned short)8192)
+#define AAC_MAX_32BIT_SGBCOUNT  ((unsigned short)512)
 
 /*
  * These macros convert from physical channels to virtual channels
@@ -845,6 +841,28 @@ struct aac_supplement_adapter_info
 #define AAC_SIS_VERSION_V3      3
 #define AAC_SIS_SLOT_UNKNOWN    0xFF
 
+#define GetBusInfo 0x00000009
+struct aac_bus_info {
+        __le32  Command;        /* VM_Ioctl */
+        __le32  ObjType;        /* FT_DRIVE */
+        __le32  MethodId;       /* 1 = SCSI Layer */
+        __le32  ObjectId;       /* Handle */
+        __le32  CtlCmd;         /* GetBusInfo */
+};
+
+struct aac_bus_info_response {
+        __le32  Status;         /* ST_OK */
+        __le32  ObjType;
+        __le32  MethodId;       /* unused */
+        __le32  ObjectId;       /* unused */
+        __le32  CtlCmd;         /* unused */
+        __le32  ProbeComplete;
+        __le32  BusCount;
+        __le32  TargetsPerBus;
+        u8      InitiatorBusId[10];
+        u8      BusValid[10];
+};
+
 /*
  * Battery platforms
  */
@@ -934,6 +952,8 @@ struct aac_dev
 
         struct Scsi_Host        *scsi_host_ptr;
         int                     maximum_num_containers;
+        int                     maximum_num_physicals;
+        int                     maximum_num_channels;
         struct fsa_dev_info     *fsa_dev;
         pid_t                   thread_pid;
         int                     cardtype;