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Diffstat (limited to 'chips/tca100.h')
| -rw-r--r-- | chips/tca100.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/chips/tca100.h b/chips/tca100.h new file mode 100644 index 0000000..2931225 --- /dev/null +++ b/chips/tca100.h @@ -0,0 +1,200 @@ +/* + * Mach Operating System + * Copyright (c) 1992 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. + */ + +#ifndef _TCA100_H_ +#define _TCA100_H_ 1 + +#ifndef STUB +#include <chips/nw.h> +#else +#include "nw.h" +#endif + +/*** FORE TCA-100 Turbochannel ATM computer interface ***/ + +/*** HARDWARE REGISTERS ***/ + +typedef volatile unsigned int vol_u_int; + +typedef struct atm_device { + unsigned int prom[64 * 1024 / 4]; + vol_u_int sreg; + vol_u_int creg_set; + vol_u_int creg_clr; + vol_u_int creg; + vol_u_int rxtimer; + unsigned int pad1; + vol_u_int rxtimerv; + unsigned int pad2; + vol_u_int rxcount; + unsigned int pad3; + vol_u_int rxthresh; + unsigned int pad4; + vol_u_int txcount; + unsigned int pad5; + vol_u_int txthresh; + unsigned int pad6[64*1024/4 - 15]; + vol_u_int rxfifo[14]; + unsigned int pad7[64*1024/4 - 14]; + vol_u_int txfifo[14]; + unsigned int pad8[64*1024/4 - 14]; +} atm_device_s, *atm_device_t; + + +/*** DEFINITION OF BITS IN THE STATUS AND CONTROL REGISTERS ***/ + +#define RX_COUNT_INTR 0x0001 +#define RX_EOM_INTR 0x0002 +#define RX_TIME_INTR 0x0004 +#define TX_COUNT_INTR 0x0008 +#define RX_CELL_LOST 0x0010 +#define RX_NO_CARRIER 0x0020 +#define CR_RX_ENABLE 0x0040 +#define CR_TX_ENABLE 0x0080 +#define CR_RX_RESET 0x0100 +#define CR_TX_RESET 0x0200 + +#define RX_COUNTER_MASK 0x03ff + +/*** DEFINITION OF FIELDS FOR AAL3/4 WITH THE TCA-100 PADDING ***/ + +/*Header -- ATM header*/ + +#define VPI 0x0ff00000 +#define VCI 0x000ffff0 + +#define ATM_HEADER_RSV_BITS 0x00000004 + +#define PERMANENT_VIRTUAL_CONNECTIONS 1 + +#if PERMANENT_VIRTUAL_CONNECTIONS +#define ATM_VPVC_MASK 0x3ff00000 +#define ATM_VPVC_SHIFT 20 +#else +#define ATM_VPVC_MASK 0x00003ff0 +#define ATM_VPVC_SHIFT 4 +#endif + + +/*First payload word -- SAR header*/ + +#define ATM_HEADER_CRC 0xff000000 +#define ATM_HEADER_CRC_SYNDROME 0x00ff0000 + +#define SEG_TYPE 0x0000c000 +#define BOM 0x00008000 +#define COM 0x00000000 +#define EOM 0x00004000 +#define SSM 0x0000c000 + +#define BOM_DATA_SIZE 40 +#define COM_DATA_SIZE 44 +#define EOM_DATA_SIZE 40 +#define SSM_DATA_SIZE 36 + +#define SEQ_NO 0x00003c00 +#define SEQ_INC 0x00000400 + +#define MID 0x000003ff +#define MID_INC 0x00000001 + +#define SAR_HEADER_MASK (ATM_HEADER_CRC_SYNDROME | SEG_TYPE | SEQ_NO | MID) + +/*Trailer -- SAR trailer and error flags*/ + +#define PAYLOAD_LENGTH 0xfc000000 +#define FULL_SEGMENT_TRAILER (44 << 26) +#define EMPTY_SEGMENT_TRAILER (4 << 26) +#define SYNCH_SEGMENT_TRAILER (16 << 26) + +#define FRAMING_ERROR 0x0001 +#define HEADER_CRC_ERROR 0x0002 +#define PAYLOAD_CRC_ERROR 0x0004 +#define PAD2_ERROR 0x0007 + +#define SAR_TRAILER_MASK (PAYLOAD_LENGTH | PAD2_ERROR) + /*This field should be FULL_SEGMENT_TRAILER IN BOM OR COM*/ + + +/*CS header and trailer fields*/ + +#define CS_PDU_TYPE 0xff000000 +#define BE_TAG 0x00ff0000 +#define BA_SIZE 0x0000ffff + +#define CS_PROTOCOL_CONTROL_FIELD 0xff000000 +#define CS_LENGTH 0x0000ffff + +/*** DEVICE STATUS ***/ + +typedef enum { /*"Flavors" for device_get_status and device_set_status*/ + ATM_MAP_SIZE, /* device_get_status options */ + ATM_MTU_SIZE, + ATM_EVC_ID, /* ID of event counter assigned to device */ + ATM_ASSIGNMENT, /* Returns two words indicating whether device is mapped + and number of tasks with the device open */ + /* device_set_status options */ + ATM_INITIALIZE, /* Restarts hardware and low-level driver */ + ATM_PVC_SET /* Sets up a permanent virtual connection -- + the status argument array is cast to a nw_pvc_s + structure */ + +} atm_status; + +typedef struct { + nw_peer_s pvc; /* Permanent virtual connection */ + u_int tx_vp; /* VPI used for transmissions to permanent virtual + connection. The VPI used for reception is the + local endpoint number. VCIs are 0 */ + nw_protocol protocol; /* Protocol of connection (possibly NW_LINE) */ +} nw_pvc_s, *nw_pvc_t; + +/*** BYTE ORDER ***/ + +/*The ATM header and SAR header and trailer are converted to and from + host byte order by hardware. CS headers and trailers and + signaling messages need byte order conversion in software. + Conversion in software is also necessary for application messages + if the communicating hosts have different byte orders (e.g. DECstation + and SPARCstation). */ + +#define HTONL(x) \ + ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | ((u_int) x >> 24)) + +#define NTOHL(x) HTONL(x) + +#if 0 +unsigned int htonl(unsigned int x) { + + return ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | (x >> 24)); +} + +#define ntohl(x) htonl(x) + +#endif + +#endif /* _TCA100_H_ */ + |