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Diffstat (limited to 'sim/ppc/device_table.h')
| -rw-r--r-- | sim/ppc/device_table.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/sim/ppc/device_table.h b/sim/ppc/device_table.h new file mode 100644 index 0000000..af6c28d --- /dev/null +++ b/sim/ppc/device_table.h @@ -0,0 +1,323 @@ +/* This file is part of the program psim. + + Copyright (C) 1994-1996, 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 _DEVICE_TABLE_H_ +#define _DEVICE_TABLE_H_ + +#include "basics.h" +#include "device.h" +#include "tree.h" + +#ifdef HAVE_STRING_H +#include <string.h> +#else +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif +#endif + + +typedef struct _device_callbacks device_callbacks; + + +/* The creator, returns a pointer to any data that should be allocated + once during (multiple) simulation runs */ + +typedef void *(device_creator) + (const char *name, + const device_unit *unit_address, + const char *args); + + +/* two stages of initialization */ + +typedef void (device_init_callback) + (device *me); + +typedef struct _device_init_callbacks { + device_init_callback *address; /* NULL - ignore */ + device_init_callback *data; /* NULL - ignore */ +} device_init_callbacks; + + +/* attaching/detaching a devices address space to its parent */ + +typedef void (device_address_callback) + (device *me, + attach_type attach, + int space, + unsigned_word addr, + unsigned nr_bytes, + access_type access, + device *client); /*callback/default*/ + +typedef struct _device_address_callbacks { + device_address_callback *attach; + device_address_callback *detach; +} device_address_callbacks; + + +/* I/O operations - from parent */ + +typedef unsigned (device_io_read_buffer_callback) + (device *me, + void *dest, + int space, + unsigned_word addr, + unsigned nr_bytes, + cpu *processor, + unsigned_word cia); + +typedef unsigned (device_io_write_buffer_callback) + (device *me, + const void *source, + int space, + unsigned_word addr, + unsigned nr_bytes, + cpu *processor, + unsigned_word cia); + +typedef struct _device_io_callbacks { /* NULL - error */ + device_io_read_buffer_callback *read_buffer; + device_io_write_buffer_callback *write_buffer; +} device_io_callbacks; + + +/* DMA transfers by a device via its parent */ + +typedef unsigned (device_dma_read_buffer_callback) + (device *me, + void *dest, + int space, + unsigned_word addr, + unsigned nr_bytes); + +typedef unsigned (device_dma_write_buffer_callback) + (device *me, + const void *source, + int space, + unsigned_word addr, + unsigned nr_bytes, + int violate_read_only_section); + +typedef struct _device_dma_callbacks { /* NULL - error */ + device_dma_read_buffer_callback *read_buffer; + device_dma_write_buffer_callback *write_buffer; +} device_dma_callbacks; + + +/* Interrupts */ + +typedef void (device_interrupt_event_callback) + (device *me, + int my_port, + device *source, + int source_port, + int level, + cpu *processor, + unsigned_word cia); + +typedef void (device_child_interrupt_event_callback) + (device *me, + device *parent, + device *source, + int source_port, + int level, + cpu *processor, + unsigned_word cia); + +typedef struct _device_interrupt_port_descriptor { + const char *name; + int number; + int nr_ports; + port_direction direction; +} device_interrupt_port_descriptor; + +typedef struct _device_interrupt_callbacks { + device_interrupt_event_callback *event; + device_child_interrupt_event_callback *child_event; + const device_interrupt_port_descriptor *ports; +} device_interrupt_callbacks; + + +/* symbolic value decoding */ + +typedef int (device_unit_decode_callback) + (device *bus, + const char *unit, + device_unit *address); + +typedef int (device_unit_encode_callback) + (device *bus, + const device_unit *unit_address, + char *buf, + int sizeof_buf); + +typedef int (device_address_to_attach_address_callback) + (device *bus, + const device_unit *address, + int *attach_space, + unsigned_word *attach_address, + device *client); + +typedef int (device_size_to_attach_size_callback) + (device *bus, + const device_unit *size, + unsigned *nr_bytes, + device *client); + +typedef struct _device_convert_callbacks { + device_unit_decode_callback *decode_unit; + device_unit_encode_callback *encode_unit; + device_address_to_attach_address_callback *address_to_attach_address; + device_size_to_attach_size_callback *size_to_attach_size; +} device_convert_callbacks; + + +/* instances */ + +typedef void (device_instance_delete_callback) + (device_instance *instance); + +typedef int (device_instance_read_callback) + (device_instance *instance, + void *buf, + unsigned_word len); + +typedef int (device_instance_write_callback) + (device_instance *instance, + const void *buf, + unsigned_word len); + +typedef int (device_instance_seek_callback) + (device_instance *instance, + unsigned_word pos_hi, + unsigned_word pos_lo); + +typedef int (device_instance_method) + (device_instance *instance, + int n_stack_args, + unsigned_cell stack_args[/*n_stack_args*/], + int n_stack_returns, + unsigned_cell stack_returns[/*n_stack_returns*/]); + +typedef struct _device_instance_methods { + const char *name; + device_instance_method *method; +} device_instance_methods; + +struct _device_instance_callbacks { /* NULL - error */ + device_instance_delete_callback *delete; + device_instance_read_callback *read; + device_instance_write_callback *write; + device_instance_seek_callback *seek; + const device_instance_methods *methods; +}; + +typedef device_instance *(device_create_instance_callback) + (device *me, + const char *full_path, + const char *args); + +typedef device_instance *(package_create_instance_callback) + (device_instance *parent, + const char *args); + + +/* all else fails */ + +typedef int (device_ioctl_callback) + (device *me, + cpu *processor, + unsigned_word cia, + device_ioctl_request request, + va_list ap); + +typedef void (device_usage_callback) + (int verbose); + + +/* the callbacks */ + +struct _device_callbacks { + + /* initialization */ + device_init_callbacks init; + + /* address/data config - from child */ + device_address_callbacks address; + + /* address/data transfer - from parent */ + device_io_callbacks io; + + /* address/data transfer - from child */ + device_dma_callbacks dma; + + /* interrupt signalling */ + device_interrupt_callbacks interrupt; + + /* bus address decoding */ + device_convert_callbacks convert; + + /* instances */ + device_create_instance_callback *instance_create; + + /* back door to anything we've forgot */ + device_ioctl_callback *ioctl; + device_usage_callback *usage; +}; + + +/* Table of all the devices and a function to lookup/create a device + from its name */ + +typedef struct _device_descriptor device_descriptor; +struct _device_descriptor { + const char *name; + device_creator *creator; + const device_callbacks *callbacks; +}; + +extern const device_descriptor *const device_table[]; +#include "hw.h" + + +/* Pass through, ignore and generic callback functions. A call going + towards the root device are passed on up, local calls are ignored + and call downs abort */ + +extern device_address_callback passthrough_device_address_attach; +extern device_address_callback passthrough_device_address_detach; +extern device_dma_read_buffer_callback passthrough_device_dma_read_buffer; +extern device_dma_write_buffer_callback passthrough_device_dma_write_buffer; + +extern device_unit_decode_callback ignore_device_unit_decode; + +extern device_init_callback generic_device_init_address; +extern device_unit_decode_callback generic_device_unit_decode; +extern device_unit_encode_callback generic_device_unit_encode; +extern device_address_to_attach_address_callback generic_device_address_to_attach_address; +extern device_size_to_attach_size_callback generic_device_size_to_attach_size; + + +extern const device_callbacks passthrough_device_callbacks; + +#endif /* _DEVICE_TABLE_H_ */ |