Annotation of sys/arch/vax/uba/uba_sbi.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: uba_sbi.c,v 1.4 2005/11/24 04:55:18 brad Exp $ */
! 2: /* $NetBSD: uba_sbi.c,v 1.1 1999/06/21 16:23:01 ragge Exp $ */
! 3: /*
! 4: * Copyright (c) 1996 Jonathan Stone.
! 5: * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden.
! 6: * Copyright (c) 1982, 1986 The Regents of the University of California.
! 7: * All rights reserved.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. Neither the name of the University nor the names of its contributors
! 18: * may be used to endorse or promote products derived from this software
! 19: * without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 31: * SUCH DAMAGE.
! 32: *
! 33: * @(#)uba.c 7.10 (Berkeley) 12/16/90
! 34: * @(#)autoconf.c 7.20 (Berkeley) 5/9/91
! 35: */
! 36:
! 37: #include <sys/param.h>
! 38: #include <sys/device.h>
! 39: #include <sys/systm.h>
! 40: #include <sys/kernel.h>
! 41:
! 42: #define _VAX_BUS_DMA_PRIVATE
! 43: #include <machine/bus.h>
! 44: #include <machine/mtpr.h>
! 45: #include <machine/nexus.h>
! 46: #include <machine/cpu.h>
! 47: #include <machine/sgmap.h>
! 48: #include <machine/scb.h>
! 49:
! 50: #include <arch/vax/qbus/ubavar.h>
! 51:
! 52: #include <arch/vax/uba/uba_common.h>
! 53:
! 54: /* Some SBI-specific defines */
! 55: #define UBASIZE (UBAPAGES * VAX_NBPG)
! 56: #define UMEMA8600(i) (0x20100000+(i)*0x40000)
! 57: #define UMEMB8600(i) (0x22100000+(i)*0x40000)
! 58:
! 59: /*
! 60: * Some status registers.
! 61: */
! 62: #define UBACNFGR_UBIC 0x00010000 /* unibus init complete */
! 63: #define UBACNFGR_BITS \
! 64: "\40\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT\30ADPDN\27ADPUP\23UBINIT\22UBPDN\21UBIC"
! 65:
! 66: #define UBACR_IFS 0x00000040 /* interrupt field switch */
! 67: #define UBACR_BRIE 0x00000020 /* BR interrupt enable */
! 68: #define UBACR_USEFIE 0x00000010 /* UNIBUS to SBI error field IE */
! 69: #define UBACR_SUEFIE 0x00000008 /* SBI to UNIBUS error field IE */
! 70: #define UBACR_ADINIT 0x00000001 /* adapter init */
! 71:
! 72: #define UBADPR_BNE 0x80000000 /* buffer not empty - purge */
! 73:
! 74: #define UBABRRVR_DIV 0x0000ffff /* device interrupt vector field */
! 75:
! 76: #define UBASR_BITS \
! 77: "\20\13RDTO\12RDS\11CRD\10CXTER\7CXTMO\6DPPE\5IVMR\4MRPF\3LEB\2UBSTO\1UBSSYNTO"
! 78:
! 79: char ubasr_bits[] = UBASR_BITS;
! 80:
! 81: /*
! 82: * The DW780 are directly connected to the SBI on 11/780 and 8600.
! 83: */
! 84: static int dw780_match(struct device *, struct cfdata *, void *);
! 85: static void dw780_attach(struct device *, struct device *, void *);
! 86: static void dw780_init(struct uba_softc*);
! 87: static void dw780_beforescan(struct uba_softc *);
! 88: static void dw780_afterscan(struct uba_softc *);
! 89: static int dw780_errchk(struct uba_softc *);
! 90: static void uba_dw780int(int);
! 91: static void ubaerror(struct uba_softc *, int *, int *);
! 92: #ifdef notyet
! 93: static void dw780_purge(struct uba_softc *, int);
! 94: #endif
! 95:
! 96: struct cfattach uba_sbi_ca = {
! 97: sizeof(struct uba_vsoftc), dw780_match, dw780_attach
! 98: };
! 99:
! 100: extern struct vax_bus_space vax_mem_bus_space;
! 101:
! 102: volatile int svec;
! 103:
! 104: int
! 105: dw780_match(parent, cf, aux)
! 106: struct device *parent;
! 107: struct cfdata *cf;
! 108: void *aux;
! 109: {
! 110: struct sbi_attach_args *sa = (struct sbi_attach_args *)aux;
! 111:
! 112: if ((cf->cf_loc[0] != sa->nexnum) && (cf->cf_loc[0] > -1 ))
! 113: return 0;
! 114: /*
! 115: * The uba type is actually only telling where the uba
! 116: * space is in nexus space.
! 117: */
! 118: if ((sa->type & ~3) != NEX_UBA0)
! 119: return 0;
! 120:
! 121: return 1;
! 122: }
! 123:
! 124: void
! 125: dw780_attach(parent, self, aux)
! 126: struct device *parent, *self;
! 127: void *aux;
! 128: {
! 129: struct uba_vsoftc *sc = (void *)self;
! 130: struct sbi_attach_args *sa = aux;
! 131: int ubaddr = sa->type & 3;
! 132: int i;
! 133:
! 134: printf(": DW780\n");
! 135: /*
! 136: * Fill in bus specific data.
! 137: */
! 138: sc->uv_sc.uh_ubainit = dw780_init;
! 139: #ifdef notyet
! 140: sc->uv_sc.uh_ubapurge = dw780_purge;
! 141: #endif
! 142: sc->uv_sc.uh_beforescan = dw780_beforescan;
! 143: sc->uv_sc.uh_afterscan = dw780_afterscan;
! 144: sc->uv_sc.uh_errchk = dw780_errchk;
! 145: sc->uv_sc.uh_iot = &vax_mem_bus_space;
! 146: sc->uv_sc.uh_dmat = &sc->uv_dmat;
! 147: sc->uv_uba = (void *)sa->nexaddr;
! 148: sc->uh_ibase = VAX_NBPG + ubaddr * VAX_NBPG;
! 149:
! 150: /*
! 151: * Set up dispatch vectors for DW780.
! 152: */
! 153: for (i = 0; i < 4; i++)
! 154: scb_vecalloc(256 + i * 64 + sa->nexnum * 4, uba_dw780int,
! 155: sc->uv_sc.uh_dev.dv_unit, SCB_ISTACK);
! 156: /*
! 157: * Fill in variables used by the sgmap system.
! 158: */
! 159: sc->uv_size = UBASIZE; /* Size in bytes of Qbus space */
! 160: sc->uv_addr = (paddr_t)sc->uv_uba->uba_map;
! 161:
! 162: uba_dma_init(sc);
! 163: uba_attach(&sc->uv_sc, (parent->dv_unit ? UMEMB8600(ubaddr) :
! 164: UMEMA8600(ubaddr)) + (UBAPAGES * VAX_NBPG));
! 165: }
! 166:
! 167: void
! 168: dw780_beforescan(sc)
! 169: struct uba_softc *sc;
! 170: {
! 171: struct uba_vsoftc *vc = (void *)sc;
! 172: volatile int *hej = &vc->uv_uba->uba_sr;
! 173:
! 174: *hej = *hej;
! 175: vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE;
! 176: }
! 177:
! 178: void
! 179: dw780_afterscan(sc)
! 180: struct uba_softc *sc;
! 181: {
! 182: struct uba_vsoftc *vc = (void *)sc;
! 183:
! 184: vc->uv_uba->uba_cr = UBACR_IFS | UBACR_BRIE |
! 185: UBACR_USEFIE | UBACR_SUEFIE |
! 186: (vc->uv_uba->uba_cr & 0x7c000000);
! 187: }
! 188:
! 189:
! 190: int
! 191: dw780_errchk(sc)
! 192: struct uba_softc *sc;
! 193: {
! 194: struct uba_vsoftc *vc = (void *)sc;
! 195: volatile int *hej = &vc->uv_uba->uba_sr;
! 196:
! 197: if (*hej) {
! 198: *hej = *hej;
! 199: return 1;
! 200: }
! 201: return 0;
! 202: }
! 203:
! 204: void
! 205: uba_dw780int(uba)
! 206: int uba;
! 207: {
! 208: int br, vec, arg;
! 209: struct uba_vsoftc *vc = uba_cd.cd_devs[uba];
! 210: struct uba_regs *ur = vc->uv_uba;
! 211: void (*func)(int);
! 212:
! 213: br = mfpr(PR_IPL);
! 214: vec = ur->uba_brrvr[br - 0x14];
! 215: if (vec <= 0) {
! 216: ubaerror(&vc->uv_sc, &br, (int *)&vec);
! 217: if (svec == 0)
! 218: return;
! 219: }
! 220: if (cold)
! 221: scb_fake(vec + vc->uh_ibase, br);
! 222: else {
! 223: struct ivec_dsp *scb_vec = (struct ivec_dsp *)((int)scb + 512);
! 224: func = scb_vec[vec/4].hoppaddr;
! 225: arg = scb_vec[vec/4].pushlarg;
! 226: (*func)(arg);
! 227: }
! 228: }
! 229:
! 230: void
! 231: dw780_init(sc)
! 232: struct uba_softc *sc;
! 233: {
! 234: struct uba_vsoftc *vc = (void *)sc;
! 235:
! 236: vc->uv_uba->uba_cr = UBACR_ADINIT;
! 237: vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE;
! 238: while ((vc->uv_uba->uba_cnfgr & UBACNFGR_UBIC) == 0)
! 239: ;
! 240: }
! 241:
! 242: #ifdef notyet
! 243: void
! 244: dw780_purge(sc, bdp)
! 245: struct uba_softc *sc;
! 246: int bdp;
! 247: {
! 248: struct uba_vsoftc *vc = (void *)sc;
! 249:
! 250: vc->uv_uba->uba_dpr[bdp] |= UBADPR_BNE;
! 251: }
! 252: #endif
! 253:
! 254: int ubawedgecnt = 10;
! 255: int ubacrazy = 500;
! 256: int zvcnt_max = 5000; /* in 8 sec */
! 257: int ubaerrcnt;
! 258: /*
! 259: * This routine is called by the locore code to process a UBA
! 260: * error on an 11/780 or 8600. The arguments are passed
! 261: * on the stack, and value-result (through some trickery).
! 262: * In particular, the uvec argument is used for further
! 263: * uba processing so the result aspect of it is very important.
! 264: * It must not be declared register.
! 265: */
! 266: /*ARGSUSED*/
! 267: void
! 268: ubaerror(uh, ipl, uvec)
! 269: register struct uba_softc *uh;
! 270: int *ipl, *uvec;
! 271: {
! 272: struct uba_vsoftc *vc = (void *)uh;
! 273: struct uba_regs *uba = vc->uv_uba;
! 274: register int sr, s;
! 275:
! 276: if (*uvec == 0) {
! 277: /*
! 278: * Declare dt as unsigned so that negative values
! 279: * are handled as >8 below, in case time was set back.
! 280: */
! 281: u_long dt = time.tv_sec - vc->uh_zvtime;
! 282:
! 283: vc->uh_zvtotal++;
! 284: if (dt > 8) {
! 285: vc->uh_zvtime = time.tv_sec;
! 286: vc->uh_zvcnt = 0;
! 287: }
! 288: if (++vc->uh_zvcnt > zvcnt_max) {
! 289: printf("%s: too many zero vectors (%d in <%d sec)\n",
! 290: vc->uv_sc.uh_dev.dv_xname, vc->uh_zvcnt, (int)dt + 1);
! 291: printf("\tIPL 0x%x\n\tcnfgr: %b Adapter Code: 0x%x\n",
! 292: *ipl, uba->uba_cnfgr&(~0xff), UBACNFGR_BITS,
! 293: uba->uba_cnfgr&0xff);
! 294: printf("\tsr: %b\n\tdcr: %x (MIC %sOK)\n",
! 295: uba->uba_sr, ubasr_bits, uba->uba_dcr,
! 296: (uba->uba_dcr&0x8000000)?"":"NOT ");
! 297: ubareset(vc->uv_sc.uh_dev.dv_unit);
! 298: }
! 299: return;
! 300: }
! 301: if (uba->uba_cnfgr & NEX_CFGFLT) {
! 302: printf("%s: sbi fault sr=%b cnfgr=%b\n",
! 303: vc->uv_sc.uh_dev.dv_xname, uba->uba_sr, ubasr_bits,
! 304: uba->uba_cnfgr, NEXFLT_BITS);
! 305: ubareset(vc->uv_sc.uh_dev.dv_unit);
! 306: *uvec = 0;
! 307: return;
! 308: }
! 309: sr = uba->uba_sr;
! 310: s = spluba();
! 311: printf("%s: uba error sr=%b fmer=%x fubar=%o\n", vc->uv_sc.uh_dev.dv_xname,
! 312: uba->uba_sr, ubasr_bits, uba->uba_fmer, 4*uba->uba_fubar);
! 313: splx(s);
! 314: uba->uba_sr = sr;
! 315: *uvec &= UBABRRVR_DIV;
! 316: if (++ubaerrcnt % ubawedgecnt == 0) {
! 317: if (ubaerrcnt > ubacrazy)
! 318: panic("uba crazy");
! 319: printf("ERROR LIMIT ");
! 320: ubareset(vc->uv_sc.uh_dev.dv_unit);
! 321: *uvec = 0;
! 322: }
! 323: }
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