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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [sim/] [ppc/] [device_table.h] - Rev 856
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/* 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_ */
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