1*34293Skarels /* 2*34293Skarels * @(#)bi.c 7.1 (Berkeley) 05/14/88 3*34293Skarels * 4*34293Skarels * VAXBI specific routines. 5*34293Skarels */ 6*34293Skarels 7*34293Skarels #include "param.h" 8*34293Skarels 9*34293Skarels #include "../vax/cpu.h" 10*34293Skarels #include "../vax/mtpr.h" 11*34293Skarels #include "../vax/nexus.h" 12*34293Skarels 13*34293Skarels #include "bireg.h" 14*34293Skarels 15*34293Skarels bi_reset(bi) 16*34293Skarels register struct biiregs *bi; 17*34293Skarels { 18*34293Skarels 19*34293Skarels bi->bi_csr |= BICSR_NRST; 20*34293Skarels DELAY(10000); /* ??? */ 21*34293Skarels } 22*34293Skarels 23*34293Skarels /* 24*34293Skarels * Reset with self test. Return true iff reset fails. 25*34293Skarels * BEWARE, THIS RESETS THE BI ARBITRATION LEVEL TO ARB_NONE 26*34293Skarels * does self test ever cause a bi bus error? 27*34293Skarels */ 28*34293Skarels bi_selftest(bi) 29*34293Skarels register struct biiregs *bi; 30*34293Skarels { 31*34293Skarels register int timo; 32*34293Skarels 33*34293Skarels bi->bi_csr |= BICSR_ARB_NONE; /* why? */ 34*34293Skarels bi->bi_csr |= BICSR_STS | BICSR_INIT;/* must this be separate? */ 35*34293Skarels DELAY(50); /* why? */ 36*34293Skarels timo = todr() + 1000; 37*34293Skarels while (bi->bi_csr & BICSR_BROKE) { 38*34293Skarels if (todr() > timo) /* reset failed */ 39*34293Skarels return (-1); 40*34293Skarels } 41*34293Skarels return (0); /* reset OK */ 42*34293Skarels } 43*34293Skarels 44*34293Skarels /* 45*34293Skarels * THIS SHOULD PROBABLY WORK MORE LIKE ubaerror() 46*34293Skarels * (but then we would need to be able to reset BI nodes) 47*34293Skarels * (we need a per-BI-device driver structure!) 48*34293Skarels */ 49*34293Skarels bi_buserr(binum) 50*34293Skarels int binum; 51*34293Skarels { 52*34293Skarels register struct bi_node *bi; 53*34293Skarels register int node; 54*34293Skarels extern int bi_nodes; 55*34293Skarels extern int cold; 56*34293Skarels 57*34293Skarels printf("vaxbi%d: bus error\n", binum); 58*34293Skarels bi = (struct bi_node *) &nexus[binum * NNODEBI];/* XXX */ 59*34293Skarels for (node = 0; node < 16; node++, bi++) { 60*34293Skarels if ((bi_nodes & (1 << node)) == 0) /* XXX crude */ 61*34293Skarels continue; 62*34293Skarels printf("node %x: ber=%b\n", node, bi->biic.bi_ber, BIBER_BITS); 63*34293Skarels } 64*34293Skarels panic("bi_buserr"); 65*34293Skarels } 66