323 lines
8.3 KiB
C
323 lines
8.3 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _DEVICE_TABLE_H_
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#define _DEVICE_TABLE_H_
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#include "basics.h"
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#include "device.h"
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#include "tree.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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typedef struct _device_callbacks device_callbacks;
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/* The creator, returns a pointer to any data that should be allocated
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once during (multiple) simulation runs */
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typedef void *(device_creator)
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(const char *name,
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const device_unit *unit_address,
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const char *args);
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/* two stages of initialization */
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typedef void (device_init_callback)
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(device *me);
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typedef struct _device_init_callbacks {
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device_init_callback *address; /* NULL - ignore */
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device_init_callback *data; /* NULL - ignore */
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} device_init_callbacks;
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/* attaching/detaching a devices address space to its parent */
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typedef void (device_address_callback)
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(device *me,
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attach_type attach,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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access_type access,
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device *client); /*callback/default*/
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typedef struct _device_address_callbacks {
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device_address_callback *attach;
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device_address_callback *detach;
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} device_address_callbacks;
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/* I/O operations - from parent */
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typedef unsigned (device_io_read_buffer_callback)
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(device *me,
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void *dest,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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cpu *processor,
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unsigned_word cia);
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typedef unsigned (device_io_write_buffer_callback)
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(device *me,
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const void *source,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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cpu *processor,
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unsigned_word cia);
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typedef struct _device_io_callbacks { /* NULL - error */
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device_io_read_buffer_callback *read_buffer;
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device_io_write_buffer_callback *write_buffer;
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} device_io_callbacks;
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/* DMA transfers by a device via its parent */
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typedef unsigned (device_dma_read_buffer_callback)
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(device *me,
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void *dest,
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int space,
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unsigned_word addr,
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unsigned nr_bytes);
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typedef unsigned (device_dma_write_buffer_callback)
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(device *me,
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const void *source,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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int violate_read_only_section);
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typedef struct _device_dma_callbacks { /* NULL - error */
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device_dma_read_buffer_callback *read_buffer;
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device_dma_write_buffer_callback *write_buffer;
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} device_dma_callbacks;
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/* Interrupts */
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typedef void (device_interrupt_event_callback)
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(device *me,
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int my_port,
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device *source,
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int source_port,
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int level,
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cpu *processor,
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unsigned_word cia);
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typedef void (device_child_interrupt_event_callback)
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(device *me,
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device *parent,
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device *source,
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int source_port,
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int level,
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cpu *processor,
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unsigned_word cia);
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typedef struct _device_interrupt_port_descriptor {
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const char *name;
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int number;
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int nr_ports;
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port_direction direction;
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} device_interrupt_port_descriptor;
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typedef struct _device_interrupt_callbacks {
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device_interrupt_event_callback *event;
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device_child_interrupt_event_callback *child_event;
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const device_interrupt_port_descriptor *ports;
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} device_interrupt_callbacks;
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/* symbolic value decoding */
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typedef int (device_unit_decode_callback)
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(device *bus,
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const char *unit,
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device_unit *address);
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typedef int (device_unit_encode_callback)
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(device *bus,
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const device_unit *unit_address,
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char *buf,
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int sizeof_buf);
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typedef int (device_address_to_attach_address_callback)
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(device *bus,
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const device_unit *address,
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int *attach_space,
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unsigned_word *attach_address,
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device *client);
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typedef int (device_size_to_attach_size_callback)
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(device *bus,
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const device_unit *size,
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unsigned *nr_bytes,
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device *client);
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typedef struct _device_convert_callbacks {
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device_unit_decode_callback *decode_unit;
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device_unit_encode_callback *encode_unit;
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device_address_to_attach_address_callback *address_to_attach_address;
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device_size_to_attach_size_callback *size_to_attach_size;
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} device_convert_callbacks;
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/* instances */
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typedef void (device_instance_delete_callback)
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(device_instance *instance);
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typedef int (device_instance_read_callback)
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(device_instance *instance,
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void *buf,
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unsigned_word len);
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typedef int (device_instance_write_callback)
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(device_instance *instance,
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const void *buf,
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unsigned_word len);
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typedef int (device_instance_seek_callback)
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(device_instance *instance,
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unsigned_word pos_hi,
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unsigned_word pos_lo);
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typedef int (device_instance_method)
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(device_instance *instance,
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int n_stack_args,
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unsigned_cell stack_args[/*n_stack_args*/],
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int n_stack_returns,
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unsigned_cell stack_returns[/*n_stack_returns*/]);
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typedef struct _device_instance_methods {
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const char *name;
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device_instance_method *method;
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} device_instance_methods;
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struct _device_instance_callbacks { /* NULL - error */
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device_instance_delete_callback *delete;
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device_instance_read_callback *read;
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device_instance_write_callback *write;
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device_instance_seek_callback *seek;
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const device_instance_methods *methods;
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};
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typedef device_instance *(device_create_instance_callback)
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(device *me,
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const char *full_path,
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const char *args);
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typedef device_instance *(package_create_instance_callback)
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(device_instance *parent,
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const char *args);
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/* all else fails */
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typedef int (device_ioctl_callback)
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(device *me,
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cpu *processor,
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unsigned_word cia,
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device_ioctl_request request,
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va_list ap);
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typedef void (device_usage_callback)
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(int verbose);
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/* the callbacks */
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struct _device_callbacks {
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/* initialization */
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device_init_callbacks init;
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/* address/data config - from child */
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device_address_callbacks address;
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/* address/data transfer - from parent */
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device_io_callbacks io;
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/* address/data transfer - from child */
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device_dma_callbacks dma;
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/* interrupt signalling */
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device_interrupt_callbacks interrupt;
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/* bus address decoding */
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device_convert_callbacks convert;
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/* instances */
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device_create_instance_callback *instance_create;
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/* back door to anything we've forgot */
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device_ioctl_callback *ioctl;
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device_usage_callback *usage;
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};
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/* Table of all the devices and a function to lookup/create a device
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from its name */
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typedef struct _device_descriptor device_descriptor;
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struct _device_descriptor {
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const char *name;
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device_creator *creator;
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const device_callbacks *callbacks;
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};
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extern const device_descriptor *const device_table[];
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#include "hw.h"
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/* Pass through, ignore and generic callback functions. A call going
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towards the root device are passed on up, local calls are ignored
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and call downs abort */
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extern device_address_callback passthrough_device_address_attach;
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extern device_address_callback passthrough_device_address_detach;
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extern device_dma_read_buffer_callback passthrough_device_dma_read_buffer;
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extern device_dma_write_buffer_callback passthrough_device_dma_write_buffer;
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extern device_unit_decode_callback ignore_device_unit_decode;
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extern device_init_callback generic_device_init_address;
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extern device_unit_decode_callback generic_device_unit_decode;
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extern device_unit_encode_callback generic_device_unit_encode;
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extern device_address_to_attach_address_callback generic_device_address_to_attach_address;
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extern device_size_to_attach_size_callback generic_device_size_to_attach_size;
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extern const device_callbacks passthrough_device_callbacks;
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#endif /* _DEVICE_TABLE_H_ */
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