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complete rewrite

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This commit is contained in:
John Winans
1992-03-26 14:32:35 +00:00
parent 0a8da7347c
commit f003ff4454
2 changed files with 678 additions and 516 deletions
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1155
src/drv/drvBitBus.c
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39
src/drv/drvBitBus.h
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@@ -32,19 +32,6 @@
* .02 12-10-91 jrw moved some stuff over to drvBitBusInterface.h
*/
/******************************************************************************
*
* Possible states the receiver message handling system can be in.
*
******************************************************************************/
#define BB_RXWAIT 0 /* waiting for a new message */
#define BB_RXGOT1 1 /* receiving header bytes */
#define BB_RXREST 2 /* finished with header, reading message */
#define BB_RXIGN 3 /* unsolicited message??? ignoreing rest */
#define BB_RXGOTHEAD 4 /* got all of the the header */
#define XVME_IRQ_HANG_TIME 100 /* how long to spin while busy waiting */
/******************************************************************************
* Memory Map of XVME-402 BITBUS CARD
*
@@ -67,11 +54,18 @@ struct xvmeRegs {
unsigned char dmA[1014]; /* Board occupies 1024 bytes in memory*/
};
#define RESET_POLL_TIME 10 /* time to sleep when waiting on a link abort */
#define BB_SEND_CMD 0x0 /* command to initiate sending of msg */
#define XVME_ENABLE_INT 0x08 /* Allow xvme interupts */
#define XVME_TX_INT 0x20 /* int enable TX only */
#define XVME_TX_PEND 0x10 /* transmit interrupt currently pending */
#define XVME_RX_INT 0x80 /* int exable RX only */
#define XVME_RX_PEND 0x40 /* receive interrupt currently pending */
#define XVME_NO_INT 0 /* disable all interrupts */
/******************************************************************************
@@ -112,18 +106,15 @@ struct xvmeRegs {
******************************************************************************/
struct xvmeLink {
WDOG_ID watchDogId; /* watchdog for timeouts */
int watchDogFlag; /* set by the watch dog int handler */
SEM_ID watchDogSem; /* set by the watch dog int handler */
unsigned char abortFlag; /* set to 1 if link is being reset by the dog */
unsigned char txAbortAck; /* set to 1 by txTask to ack abort Sequence */
unsigned char rxAbortAck; /* set to 1 by rxTask to ack abort Sequence */
struct xvmeRegs *bbRegs;/* pointer to board registers */
int rxStatus; /* current state of the message receiver */
char rxHead[5]; /* room for headder of current rx msg */
unsigned char *rxMsg; /* where to place next byte (after header) */
int rxTCount; /* byte counter for data in rxHead */
struct dpvtBitBusHead *rxDpvtHead; /* for message currently receiving */
SEM_ID rxInt; /* given when rx interrupts occur */
int txCCount; /* total number of bytes sent so far */
int txTCount; /* total number of bytes to xmit */
struct dpvtBitBusHead *txDpvtHead; /* for message currently transmitting */
unsigned char *txMsg; /* next byte to transmit in current msg */
struct bbLink *pbbLink;
};