1 /* 2 * @(#)bi.c 7.1 (Berkeley) 05/14/88 3 * 4 * VAXBI specific routines. 5 */ 6 7 #include "param.h" 8 9 #include "../vax/cpu.h" 10 #include "../vax/mtpr.h" 11 #include "../vax/nexus.h" 12 13 #include "bireg.h" 14 15 bi_reset(bi) 16 register struct biiregs *bi; 17 { 18 19 bi->bi_csr |= BICSR_NRST; 20 DELAY(10000); /* ??? */ 21 } 22 23 /* 24 * Reset with self test. Return true iff reset fails. 25 * BEWARE, THIS RESETS THE BI ARBITRATION LEVEL TO ARB_NONE 26 * does self test ever cause a bi bus error? 27 */ 28 bi_selftest(bi) 29 register struct biiregs *bi; 30 { 31 register int timo; 32 33 bi->bi_csr |= BICSR_ARB_NONE; /* why? */ 34 bi->bi_csr |= BICSR_STS | BICSR_INIT;/* must this be separate? */ 35 DELAY(50); /* why? */ 36 timo = todr() + 1000; 37 while (bi->bi_csr & BICSR_BROKE) { 38 if (todr() > timo) /* reset failed */ 39 return (-1); 40 } 41 return (0); /* reset OK */ 42 } 43 44 /* 45 * THIS SHOULD PROBABLY WORK MORE LIKE ubaerror() 46 * (but then we would need to be able to reset BI nodes) 47 * (we need a per-BI-device driver structure!) 48 */ 49 bi_buserr(binum) 50 int binum; 51 { 52 register struct bi_node *bi; 53 register int node; 54 extern int bi_nodes; 55 extern int cold; 56 57 printf("vaxbi%d: bus error\n", binum); 58 bi = (struct bi_node *) &nexus[binum * NNODEBI];/* XXX */ 59 for (node = 0; node < 16; node++, bi++) { 60 if ((bi_nodes & (1 << node)) == 0) /* XXX crude */ 61 continue; 62 printf("node %x: ber=%b\n", node, bi->biic.bi_ber, BIBER_BITS); 63 } 64 panic("bi_buserr"); 65 } 66