--- /dev/null
+#include "../h/param.h"
+#include "../h/pte.h"
+#include "../h/ubareg.h"
+#include "../net/in.h"
+#include "../net/in_systm.h"
+#define IMPLEADERS
+#include "../net/if_imp.h"
+#include "../net/if_acc.h"
+#include "../h/inode.h"
+#include "saio.h"
+#include "savax.h"
+
+#define min(a,b) (a<b ? a : b)
+#define BUFSIZ 512
+
+char input[132];
+struct imp_leader imps, *ip = &imps;
+char inbuf[BUFSIZ];
+int writeflg = 0;
+
+main()
+{
+ register error = 0, i, len;
+ short type, host, impno, link;
+ register struct accdevice *addr =
+ (struct accdevice *)ubamem(0, 0767700);
+
+ printf("imp interface diagnostic\n");
+ printf("read or write test(r or w)? ");
+ gets(input);
+ while (*input != 'r' && *input != 'w') {
+ printf("reply r or w: ");
+ gets(input);
+ }
+ if (*input == 'w') {
+ writeflg++;
+ printf("enter destination host number: ");
+ gets(input);
+ while ((host = (short)atol(input)) < 0 || host > 255) {
+ printf("range [0, 255], re-enter: ");
+ gets(input);
+ }
+ printf("imp number: ");
+ gets(input);
+ while ((impno = (short)atol(input)) < 0 || impno > 32767) {
+ printf("range [0, 32767], re-enter: ");
+ gets(input);
+ }
+ printf("link number: ");
+ gets(input);
+ while ((link = (short)atol(input)) < 0 || link > 255) {
+ printf("range [0, 255], re-enter: ");
+ gets(input);
+ }
+ }
+ printf("initialization starting...\n");
+ impinit();
+ /* send 3 noops and init imp leader buffer */
+ impnoops((struct control_leader *)ip);
+ printf("initialization complete\n");
+ if (writeflg) {
+ printf("starting write test...\n");
+ ip->il_host = host;
+ ip->il_imp = htons((u_short)impno);
+ ip->il_link = link;
+ while (!error)
+ error = impwrite(ip, sizeof (*ip));
+ printf("imp write error, ocsr=%b\n", (short)error,
+ ACC_OUTBITS);
+ } else {
+ printf("starting read test...\n");
+ while (!error) {
+printf("impread(%d)\n", sizeof (*ip));
+ error = impread(ip, sizeof (*ip));
+printf("impread, error=%b\n", error, ACC_INBITS);
+ printleader(ip);
+ len = ntohs(ip->il_length);
+printf("length=%d\n", len);
+ /* read any data */
+ while ((error & IN_EOM) == 0 &&
+ (error & ~IN_EOM) == 0 && len > 0) {
+ i = min(len, BUFSIZ);
+printf("impread(%d)\n", i);
+ error = impread(inbuf, i);
+ len -= i;
+printf("error=%b, len=%d\n", error, ACC_INBITS, len);
+ }
+ error &= ~IN_EOM;
+ if (error == 0 && (len > 0 || addr->iwc))
+ printf("imp input length mismatch\n");
+ }
+ printf("imp read error, icsr=%b\n", (short)error, ACC_INBITS);
+ }
+ printf("...imptest exiting\n");
+}
+
+impnoops(cp)
+ register struct control_leader *cp;
+{
+ register i, error;
+
+ bzero((caddr_t)cp, sizeof (struct control_leader));
+ cp->dl_format = IMP_NFF;
+ cp->dl_mtype = IMPTYPE_NOOP;
+ for (i = 0; i < IMP_DROPCNT + 1; i++ ) {
+ cp->dl_link = i;
+ if ((error = impwrite(ip, sizeof (*ip))) != 0) {
+ printf("imp init error, ocsr=%b\n", (short)error,
+ ACC_OUTBITS);
+ _stop();
+ }
+ }
+}
+
+impwrite(buf, len)
+ register struct imp *buf;
+ register len;
+{
+ register uba, error;
+ struct iob io;
+ register struct accdevice *addr =
+ (struct accdevice *)ubamem(0, 0767600);
+
+ /* set up uba mapping */
+ io.i_ma = (caddr_t)buf;
+ io.i_cc = len;
+ uba = ubasetup(&io, 0);
+
+ /* set regs and perform i/o */
+ addr->oba = (u_short)uba;
+ addr->owc = -((io.i_cc + 1) >> 1);
+ addr->ocsr = ((short) ((uba & 0x30000) >> 12) | OUT_ENLB | ACC_GO);
+ while ((addr->ocsr & ACC_RDY) == 0)
+ ;
+ error = addr->ocsr & (ACC_NXM|ACC_ERR);
+ ubafree(uba);
+ return(error);
+}
+
+impread(buf, len)
+ register struct imp *buf;
+ register len;
+{
+ register uba, error;
+ struct iob io;
+ register struct accdevice *addr =
+ (struct accdevice *)ubamem(0, 0767600);
+
+ /* set up uba mapping */
+ io.i_ma = (caddr_t)buf;
+ io.i_cc = len;
+ uba = ubasetup(&io, 0);
+ /* set regs and perform i/o */
+ addr->iba = (u_short)uba;
+ addr->iwc = -(io.i_cc >> 1);
+ addr->icsr = IN_MRDY | IN_WEN | ((uba & 0x30000) >> 12) | ACC_GO;
+ while ((addr->icsr & ACC_RDY) == 0)
+ ;
+ error = addr->icsr & (IN_EOM|ACC_ERR|IN_RMR|ACC_NXM);
+ ubafree(uba);
+ return(error);
+}
+
+impinit()
+{
+ register struct accdevice *addr =
+ (struct accdevice *)ubamem(0, 0767600);
+ register int i;
+
+ /*
+ * Reset the imp interface;
+ * the delays are pure guesswork.
+ */
+ addr->icsr = ACC_RESET; DELAY(5000);
+ addr->ocsr = ACC_RESET; DELAY(5000);
+ addr->ocsr = OUT_BBACK; DELAY(5000); /* reset host master ready */
+ addr->ocsr = 0;
+ addr->icsr = IN_MRDY | IN_WEN; /* close the relay */
+ DELAY(10000);
+ /* YECH!!! */
+ for (i = 0; i < 500; i++) {
+ if ((addr->icsr & IN_HRDY) &&
+ (addr->icsr & (IN_RMR | IN_IMPBSY)) == 0)
+ return;
+ addr->icsr = IN_MRDY | IN_WEN; DELAY(10000);
+ /* keep turning IN_RMR off */
+ }
+ printf("imp doesn't respond, icsr=%b, ocsr=%b\n",
+ addr->icsr, ACC_INBITS, addr->ocsr, ACC_OUTBITS);
+}
+
+/*
+ * Convert null-terminated ascii string to binary
+ * and return value.
+ * 1st char in string :
+ * 0 -> octal
+ * x -> hex
+ * else decimal
+ */
+atol(as)
+ register char *as;
+{
+ register value = 0;
+ register base = 10;
+ register sign = 1;
+ register digit = 0;
+
+aloop :
+ if ((digit = (*as++)) == 0)
+ return(value) ; /* null */
+ if (digit == '-') {
+ sign = -sign;
+ goto aloop ;
+ }
+ if (digit == '0')
+ base = 8 ;
+ else if (digit == 'x')
+ base = 16 ;
+ else
+ value = digit - '0';
+ while (digit = (*as++)) {
+ if (digit < '0')
+ return(0);
+ switch (base) {
+
+ case 8 :
+ if (digit > '7')
+ return(0);
+ digit -= '0';
+ break;
+
+ case 10 :
+ if (digit > '9')
+ return(0);
+ digit -= '0';
+ break;
+
+ case 16 :
+ if (digit <= '9') {
+ digit -= 060 ;
+ break;
+ }
+ if ((digit >= 'A') && (digit <= 'F')) {
+ digit -= 'A' + 10;
+ break;
+ }
+ if ((digit >= 'a') && (digit <= 'f')) {
+ digit -= 'a' + 10 ;
+ break;
+ }
+ return(0);
+ }
+ value = (value * base) + digit;
+ }
+ return (value * sign);
+}
+
+printleader(ip)
+ register struct imp_leader *ip;
+{
+ printbyte((char *)ip, 12);
+ printf("<fmt=%x,net=%x,flags=%x,mtype=", ip->il_format, ip->il_network,
+ ip->il_flags);
+ if (ip->il_mtype <= IMPTYPE_READY)
+ printf("%s,", impleaders[ip->il_mtype]);
+ else
+ printf("%x,", ip->il_mtype);
+ printf("htype=%x,host=%x,imp=%x,link=", ip->il_htype, ip->il_host,
+ ntohs(ip->il_imp));
+ if (ip->il_link == IMPLINK_IP)
+ printf("ip,");
+ else
+ printf("%x,", ip->il_link);
+ printf("subtype=%x,len=%x>\n",ip->il_subtype,ntohs(ip->il_length)>>3);
+}
+
+printbyte(cp, n)
+ register char *cp;
+ int n;
+{
+ register i, j, c;
+
+ for (i=0; i<n; i++) {
+ c = *cp++;
+ for (j=0; j<2; j++)
+ putchar("0123456789abcdef"[(c>>((1-j)*4))&0xf]);
+ putchar(' ');
+ }
+ putchar('\n');
+}
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