u32 i2o_msg_get_wait (struct i2o_controller * c, struct i2o_message __iomem ** msg, int wait);
This function waits up to wait seconds for a message slot to be available.
On a success the message is returned and the pointer to the message is set in msg. The returned message is the physical page frame offset address from the read port (see the i2o spec). If no message is available returns I2O_QUEUE_EMPTY and msg is leaved untouched.