Annotation of sys/arch/alpha/mcbus/mcbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mcbus.c,v 1.1 2007/03/16 21:22:27 robert Exp $ */
! 2: /* $NetBSD: mcbus.c,v 1.19 2007/03/04 05:59:11 christos Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1998 by Matthew Jacob
! 6: * NASA AMES Research Center.
! 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 immediately at the beginning of the file, without modification,
! 14: * this list of conditions, and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. The name of the author may not be used to endorse or promote products
! 19: * derived from this software without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 25: * 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:
! 34: /*
! 35: * Autoconfiguration routines for the MCBUS system
! 36: * bus found on AlphaServer 4100 systems.
! 37: */
! 38:
! 39: #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
! 40: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/device.h>
! 43: #include <sys/malloc.h>
! 44:
! 45: #include <machine/autoconf.h>
! 46: #include <machine/rpb.h>
! 47: #include <machine/pte.h>
! 48:
! 49: #include <alpha/mcbus/mcbusreg.h>
! 50: #include <alpha/mcbus/mcbusvar.h>
! 51:
! 52: #include <alpha/pci/mcpciareg.h>
! 53:
! 54: #define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
! 55: #define MCPCIA_EXISTS(mid, gid) \
! 56: (!badaddr((void *)KV(MCPCIA_BRIDGE_ADDR(gid, mid)), sizeof (u_int32_t)))
! 57:
! 58: struct mcbus_cpu_busdep mcbus_primary;
! 59:
! 60: int mcbusmatch (struct device *, void *, void *);
! 61: void mcbusattach (struct device *, struct device *, void *);
! 62: int mcbusprint (void *, const char *);
! 63: int mcbussbm (struct device *, void *, void *);
! 64:
! 65: const char *mcbus_node_type_str (u_int8_t);
! 66:
! 67: typedef struct {
! 68: struct device mcbus_dev;
! 69: u_int8_t mcbus_types[MCBUS_MID_MAX];
! 70: } mcbus_softc_t;
! 71:
! 72: struct cfattach mcbus_ca = {
! 73: sizeof(mcbus_softc_t), mcbusmatch, mcbusattach
! 74: };
! 75:
! 76: struct cfdriver mcbus_cd = {
! 77: NULL, "mcbus", DV_DULL,
! 78: };
! 79:
! 80: /*
! 81: * Tru64 UNIX (formerly Digital UNIX (formerly DEC OSF/1)) probes for MCPCIAs
! 82: * in the following order:
! 83: *
! 84: * 5, 4, 7, 6
! 85: *
! 86: * This is so that the built-in CD-ROM on the internal 53c810 is always
! 87: * dka500. We probe them in the same order, for consistency.
! 88: */
! 89: const int mcbus_mcpcia_probe_order[] = { 5, 4, 7, 6 };
! 90:
! 91: extern void mcpcia_config_cleanup (void);
! 92:
! 93: int
! 94: mcbusprint(aux, cp)
! 95: void *aux;
! 96: const char *cp;
! 97: {
! 98: struct mcbus_dev_attach_args *tap = aux;
! 99: printf(" mid %d: %s", tap->ma_mid,
! 100: mcbus_node_type_str(tap->ma_type));
! 101: return (UNCONF);
! 102: }
! 103:
! 104: int
! 105: mcbussbm(parent, cf, aux)
! 106: struct device *parent;
! 107: void *cf;
! 108: void *aux;
! 109: {
! 110: struct mcbus_dev_attach_args *tap = aux;
! 111: struct cfdata *mcf = (struct cfdata *)cf;
! 112:
! 113: if (mcf->cf_loc[MCBUSCF_MID] != MCBUSCF_MID_DEFAULT &&
! 114: mcf->cf_loc[MCBUSCF_MID] != tap->ma_mid)
! 115: return (0);
! 116:
! 117:
! 118: return ((*mcf->cf_attach->ca_match)(parent, mcf, aux));
! 119: }
! 120:
! 121: int
! 122: mcbusmatch(parent, cf, aux)
! 123: struct device *parent;
! 124: void *cf;
! 125: void *aux;
! 126: {
! 127: struct mainbus_attach_args *ma = aux;
! 128:
! 129: /* Make sure we're looking for a MCBUS. */
! 130: if (strcmp(ma->ma_name, mcbus_cd.cd_name) != 0)
! 131: return (0);
! 132:
! 133: /*
! 134: * Only available on 4100 processor type platforms.
! 135: */
! 136: if (cputype != ST_DEC_4100)
! 137: return (0);
! 138:
! 139: return (1);
! 140: }
! 141:
! 142: void
! 143: mcbusattach(parent, self, aux)
! 144: struct device *parent;
! 145: struct device *self;
! 146: void *aux;
! 147: {
! 148: static const char *bcs[CPU_BCacheMask + 1] = {
! 149: "No", "1MB", "2MB", "4MB",
! 150: };
! 151: struct mcbus_dev_attach_args ta;
! 152: mcbus_softc_t *mbp = (mcbus_softc_t *)self;
! 153: int i, mid;
! 154:
! 155: printf(": %s BCache\n", mcbus_primary.mcbus_valid ?
! 156: bcs[mcbus_primary.mcbus_bcache] : "Unknown");
! 157:
! 158: mbp->mcbus_types[0] = MCBUS_TYPE_RES;
! 159: for (mid = 1; mid <= MCBUS_MID_MAX; ++mid)
! 160: mbp->mcbus_types[mid] = MCBUS_TYPE_UNK;
! 161:
! 162: /*
! 163: * Find and "configure" memory.
! 164: */
! 165: ta.ma_name = mcbus_cd.cd_name;
! 166: ta.ma_gid = MCBUS_GID_FROM_INSTANCE(0);
! 167: ta.ma_mid = 1;
! 168: ta.ma_type = MCBUS_TYPE_MEM;
! 169: mbp->mcbus_types[1] = MCBUS_TYPE_MEM;
! 170:
! 171: (void) config_found_sm(self, &ta, mcbusprint, mcbussbm);
! 172:
! 173: /*
! 174: * Now find PCI busses.
! 175: */
! 176: for (i = 0; i < MCPCIA_PER_MCBUS; i++) {
! 177: mid = mcbus_mcpcia_probe_order[i];
! 178: ta.ma_name = mcbus_cd.cd_name;
! 179: ta.ma_gid = MCBUS_GID_FROM_INSTANCE(0);
! 180: ta.ma_mid = mid;
! 181: ta.ma_type = MCBUS_TYPE_PCI;
! 182: if (MCPCIA_EXISTS(ta.ma_mid, ta.ma_gid))
! 183: (void) config_found_sm(self, &ta, mcbusprint,
! 184: mcbussbm);
! 185: }
! 186:
! 187: mcpcia_config_cleanup();
! 188: }
! 189:
! 190: const char *
! 191: mcbus_node_type_str(type)
! 192: u_int8_t type;
! 193: {
! 194: switch (type) {
! 195: case MCBUS_TYPE_RES:
! 196: panic ("RESERVED TYPE IN MCBUS_NODE_TYPE_STR");
! 197: break;
! 198: case MCBUS_TYPE_UNK:
! 199: panic ("UNKNOWN TYPE IN MCBUS_NODE_TYPE_STR");
! 200: break;
! 201: case MCBUS_TYPE_MEM:
! 202: return ("Memory");
! 203: case MCBUS_TYPE_CPU:
! 204: return ("CPU");
! 205: case MCBUS_TYPE_PCI:
! 206: return ("PCI Bridge");
! 207: default:
! 208: panic("REALLY UNKNWON (%x) TYPE IN MCBUS_NODE_TYPE_STR", type);
! 209: break;
! 210: }
! 211: }
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