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Diffstat (limited to 'chips/nc.h')
| -rw-r--r-- | chips/nc.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/chips/nc.h b/chips/nc.h new file mode 100644 index 0000000..0e481e8 --- /dev/null +++ b/chips/nc.h @@ -0,0 +1,232 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ + +/*** NETWORK INTERFACE IMPLEMENTATION CORE ***/ + +#ifndef _NC_H_ +#define _NC_H_ + +#ifndef STUB +#include <chips/nw.h> +#else +#include "nw.h" +#endif + +/*** Types and data structures ***/ + +#if PRODUCTION +#define MAX_EP 1024 +#define MAX_DEV 16 +#else +#define MAX_EP 32 +#define MAX_DEV 3 +#endif + +#define MASTER_LINE_EP 0 +#define SIGNAL_EP 1 + +typedef struct nw_tx_headers { + nw_buffer_t buffer; + u_int msg_length; + char *block; + u_int block_length; + nw_peer_s peer; + nw_ep sender; + nw_options options; + struct nw_tx_headers *next; +} nw_tx_header_s; + +typedef nw_tx_header_s *nw_tx_header_t; + +typedef struct nw_rx_headers { + nw_buffer_t buffer; + nw_ep receiver; + u_int reply; + int time_stamp; + struct nw_rx_headers *next; +} nw_rx_header_s, *nw_rx_header_t; + +typedef enum { + NW_CONNECTIONLESS, + NW_CONNECTION_ORIENTED +} nw_dev_type; + + +typedef struct { + nw_result (*initialize)(int); + nw_result (*status)(int); + void (*slow_sweep)(int); + void (*fast_sweep)(int); + int (*poll)(int); + nw_result (*send)(nw_ep, nw_tx_header_t, nw_options); + nw_buffer_t (*rpc)(nw_ep, nw_tx_header_t, nw_options); + void (*signal)(nw_buffer_t); + nw_result (*open)(nw_ep, nw_address_1, nw_address_2, nw_ep); + nw_result (*accept)(nw_ep, nw_buffer_t, nw_ep_t); + nw_result (*close)(nw_ep); + nw_result (*add)(nw_ep, nw_address_1, nw_address_2, nw_ep); + nw_result (*drop)(nw_ep, nw_address_1, nw_address_2, nw_ep); +} nw_dev_entry_s, *nw_dev_entry_t; + +typedef struct { + nw_result status; + nw_dev_type type; + char *addr; + nw_address_1 local_addr_1; + nw_address_2 local_addr_2; + nw_dev_entry_t entry; + int fast_req; +} nw_devcb; + +extern nw_devcb devct[MAX_DEV]; + +typedef struct plists { + nw_peer_s peer; + struct plists *next; +} nw_plist_s, *nw_plist_t; + +typedef struct nw_unused_buffers { + u_int buf_used:1; + u_int buf_length:31; + struct nw_unused_buffers *next; + struct nw_unused_buffers *previous; +} nw_unused_buffer_s, *nw_unused_buffer_t; + +typedef struct ecbs{ + nw_protocol protocol; + nw_acceptance accept; + nw_state state; + nw_plist_t conn; + char *buf_start; + char *buf_end; + nw_unused_buffer_t free_buffer; + nw_ep id:16; + u_int overrun:1; + u_int seqno:14; + nw_tx_header_t tx_first; + nw_tx_header_t tx_last; + nw_tx_header_t tx_initial; + nw_tx_header_t tx_current; + nw_rx_header_t rx_first; + nw_rx_header_t rx_last; + nw_ep next:16; + nw_ep previous:16; +} nw_ecb, *nw_ecb_t; + +extern nw_ecb ect[MAX_EP]; + +extern int nw_free_ep_first, nw_free_ep_last; +extern int nw_free_line_first, nw_free_line_last; + +typedef enum { + NW_RECEIVE, + NW_RECEIVE_URGENT, + NW_SEND, + NW_SIGNAL +} nw_delivery; + + +/*** System-independent functions implemented in core ***/ + +extern void nc_initialize(); + +extern nw_tx_header_t nc_tx_header_allocate(); + +extern void nc_tx_header_deallocate(nw_tx_header_t header); + +extern nw_rx_header_t nc_rx_header_allocate(); + +extern void nc_rx_header_deallocate(nw_rx_header_t header); + +extern nw_plist_t nc_peer_allocate(); + +extern void nc_peer_deallocate(nw_plist_t peer); + +extern nw_result nc_device_register(u_int dev, nw_dev_type type, + char *dev_addr, + nw_dev_entry_t dev_entry_table); + +extern nw_result nc_device_unregister(u_int dev, nw_result status); + +extern void nc_fast_sweep(); + +extern void nc_fast_timer_set(); + +extern void nc_fast_timer_reset(); + +extern void nc_slow_sweep(); + +extern nw_result nc_update(nw_update_type up_type, int *up_info); + +extern nw_result nc_lookup(nw_lookup_type lt, int *look_info); + +extern nw_result nc_line_update(nw_peer_t peer, nw_ep line); + +extern nw_ep nc_line_lookup(nw_peer_t peer); + +extern nw_result nc_endpoint_allocate(nw_ep_t epp, nw_protocol protocol, + nw_acceptance accept, + char *buffer_address, u_int buffer_size); + +extern nw_result nc_endpoint_deallocate(nw_ep ep); + +extern nw_buffer_t nc_buffer_allocate(nw_ep ep, u_int size); + +extern nw_result nc_buffer_deallocate(nw_ep ep, nw_buffer_t buffer); + +extern nw_result nc_endpoint_status(nw_ep ep, + nw_state_t state, nw_peer_t peer); + + +/* System-dependent function implemented in wrapper*/ + +extern boolean_t nc_deliver_result(nw_ep ep, nw_delivery type, int result); + +/* Support required in wrapper */ + +extern void h_initialize(); + +extern void h_fast_timer_set(); + +extern void h_fast_timer_reset(); + + +/* Stubs for device table */ + +extern nw_result nc_succeed(int); +extern nw_result nc_fail(int); +extern void nc_null(int); +extern int nc_null_poll(int); +extern nw_result nc_null_send(nw_ep, nw_tx_header_t, nw_options); +extern nw_buffer_t nc_null_rpc(nw_ep, nw_tx_header_t, nw_options); +extern nw_result nc_local_send(nw_ep, nw_tx_header_t, nw_options); +extern nw_buffer_t nc_local_rpc(nw_ep, nw_tx_header_t, nw_options); +extern void nc_null_signal(nw_buffer_t); +extern nw_result nc_open_fail(nw_ep, nw_address_1, nw_address_2, nw_ep); +extern nw_result nc_accept_fail(nw_ep, nw_buffer_t, nw_ep_t); +extern nw_result nc_close_fail(nw_ep); + +#endif /* _NC_H_ */ |