1 files changed, 77 insertions, 0 deletions

diff --git a/drivers/misc/ibmasm/i2o.h b/drivers/misc/ibmasm/i2o.h
new file mode 100644
index 000000000000..958c957a5e75
--- /dev/null
+++ b/drivers/misc/ibmasm/i2o.h
@@ -0,0 +1,77 @@
+/*
+ * IBM ASM Service Processor Device Driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) IBM Corporation, 2004
+ *
+ * Author: Max Asböck <amax@us.ibm.com> 
+ *
+ */
+
+#pragma pack(1)
+struct i2o_header {
+        u8      version;
+        u8      message_flags;
+        u16     message_size;
+        u8      target;           
+        u8      initiator_and_target;
+        u8      initiator;        
+        u8      function;
+        u32     initiator_context;
+};
+#pragma pack()
+
+#define I2O_HEADER_TEMPLATE \
+      { .version              = 0x01, \
+        .message_flags        = 0x00, \
+        .function             = 0xFF, \
+        .initiator            = 0x00, \
+        .initiator_and_target = 0x40, \
+        .target               = 0x00, \
+        .initiator_context    = 0x0 }
+
+#define I2O_MESSAGE_SIZE        0x1000
+#define I2O_COMMAND_SIZE        (I2O_MESSAGE_SIZE - sizeof(struct i2o_header))
+
+#pragma pack(1)
+struct i2o_message {
+        struct i2o_header       header;
+        void                    *data;
+};
+#pragma pack()
+
+static inline unsigned short outgoing_message_size(unsigned int data_size)
+{
+        unsigned int size;
+        unsigned short i2o_size;
+
+        if (data_size > I2O_COMMAND_SIZE)
+                data_size = I2O_COMMAND_SIZE;
+
+        size = sizeof(struct i2o_header) + data_size;
+
+        i2o_size = size / sizeof(u32);
+        
+        if (size % sizeof(u32))
+               i2o_size++;
+
+        return i2o_size;
+}       
+
+static inline u32 incoming_data_size(struct i2o_message *i2o_message)
+{
+        return (sizeof(u32) * i2o_message->header.message_size);
+}