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/* This file is part of the program psim.
Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
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.
*/
#ifndef HW_ROOT
#define HW_ROOT
/* A root device from which dv-* devices can be built */
#include "hw-device.h"
#include "hw-properties.h"
#include "hw-events.h"
#include "hw-alloc.h"
/* #include "hw-instances.h" */
/* #include "hw-handles.h" */
#include "hw-ports.h"
typedef void (hw_finish_callback)
(struct hw *me);
struct hw_device_descriptor {
const char *family;
hw_finish_callback *to_finish;
};
/* Create a primative device */
struct hw *hw_create
(struct sim_state *sd,
struct hw *parent,
const char *family,
const char *name,
const char *unit,
const char *args);
/* Complete the creation of that device (finish overrides methods
using the set_hw_* operations below) */
void hw_finish
(struct hw *me);
int hw_finished_p
(struct hw *me);
/* Delete the entire device */
void hw_delete
(struct hw *me);
/* Override device methods */
#define set_hw_data(hw, value) \
((hw)->data_of_hw = (value))
#define set_hw_reset(hw, method) \
((hw)->to_reset = method)
#define set_hw_io_read_buffer(hw, method) \
((hw)->to_io_read_buffer = (method))
#define set_hw_io_write_buffer(hw, method) \
((hw)->to_io_write_buffer = (method))
#define set_hw_dma_read_buffer(me, method) \
((me)->to_dma_read_buffer = (method))
#define set_hw_dma_write_buffer(me, method) \
((me)->to_dma_write_buffer = (method))
#define set_hw_attach_address(hw, method) \
((hw)->to_attach_address = (method))
#define set_hw_detach_address(hw, method) \
((hw)->to_detach_address = (method))
#define set_hw_unit_decode(hw, method) \
((hw)->to_unit_decode = (method))
#define set_hw_unit_encode(hw, method) \
((hw)->to_unit_encode = (method))
#define set_hw_unit_address_to_attach_address(hw, method) \
((hw)->to_unit_address_to_attach_address = (method))
#define set_hw_unit_size_to_attach_size(hw, method) \
((hw)->to_unit_size_to_attach_size = (method))
typedef void (hw_delete_callback)
(struct hw *me);
#define set_hw_delete(hw, method) \
((hw)->base_of_hw->to_delete = (method))
/* Helper functions to make the implementation of a device easier */
/* Go through the devices reg properties and look for those specifying
an address to attach various registers to */
void do_hw_attach_regs (struct hw *me);
/* Perform a polling read on FD returning either the number of bytes
or a hw_io status code that indicates the reason for the read
failure */
enum {
HW_IO_EOF = -1, HW_IO_NOT_READY = -2, /* See: IEEE 1275 */
};
typedef int (do_hw_poll_read_method)
(SIM_DESC sd, int, char *, int);
int do_hw_poll_read
(struct hw *me,
do_hw_poll_read_method *read,
int sim_io_fd,
void *buf,
unsigned size_of_buf);
/* ALLOC */
extern void create_hw_alloc_data
(struct hw *hw);
extern void delete_hw_alloc_data
(struct hw *hw);
/* PORTS */
extern void create_hw_port_data
(struct hw *hw);
extern void delete_hw_port_data
(struct hw *hw);
/* EVENTS */
extern void create_hw_event_data
(struct hw *hw);
extern void delete_hw_event_data
(struct hw *hw);
#endif
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