Annotation of sys/arch/alpha/pci/mcpcia.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: mcpcia.c,v 1.1 2007/03/16 21:22:27 robert Exp $ */
! 2: /* $NetBSD: mcpcia.c,v 1.20 2007/03/04 05:59:11 christos Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1998 by Matthew Jacob
! 43: * NASA AMES Research Center.
! 44: * All rights reserved.
! 45: *
! 46: * Redistribution and use in source and binary forms, with or without
! 47: * modification, are permitted provided that the following conditions
! 48: * are met:
! 49: * 1. Redistributions of source code must retain the above copyright
! 50: * notice immediately at the beginning of the file, without modification,
! 51: * this list of conditions, and the following disclaimer.
! 52: * 2. Redistributions in binary form must reproduce the above copyright
! 53: * notice, this list of conditions and the following disclaimer in the
! 54: * documentation and/or other materials provided with the distribution.
! 55: * 3. The name of the author may not be used to endorse or promote products
! 56: * derived from this software without specific prior written permission.
! 57: *
! 58: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 59: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 60: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 61: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
! 62: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 63: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 64: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 65: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 66: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 67: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 68: * SUCH DAMAGE.
! 69: */
! 70:
! 71: /*
! 72: * MCPCIA mcbus to PCI bus adapter
! 73: * found on AlphaServer 4100 systems.
! 74: */
! 75:
! 76: #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
! 77: #include <sys/param.h>
! 78: #include <sys/systm.h>
! 79: #include <sys/device.h>
! 80: #include <sys/malloc.h>
! 81:
! 82: #include <machine/autoconf.h>
! 83: #include <machine/rpb.h>
! 84: #include <machine/sysarch.h>
! 85:
! 86: #include <alpha/mcbus/mcbusreg.h>
! 87: #include <alpha/mcbus/mcbusvar.h>
! 88: #include <alpha/pci/mcpciareg.h>
! 89: #include <alpha/pci/mcpciavar.h>
! 90: #include <alpha/pci/pci_kn300.h>
! 91:
! 92: #define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
! 93: #define MCPCIA_SYSBASE(mc) \
! 94: ((((unsigned long) (mc)->cc_gid) << MCBUS_GID_SHIFT) | \
! 95: (((unsigned long) (mc)->cc_mid) << MCBUS_MID_SHIFT) | \
! 96: (MCBUS_IOSPACE))
! 97:
! 98: #define MCPCIA_PROBE(mid, gid) \
! 99: badaddr((void *)KV(((((unsigned long) gid) << MCBUS_GID_SHIFT) | \
! 100: (((unsigned long) mid) << MCBUS_MID_SHIFT) | \
! 101: (MCBUS_IOSPACE) | MCPCIA_PCI_BRIDGE | _MCPCIA_PCI_REV)), \
! 102: sizeof(u_int32_t))
! 103:
! 104: int mcpciamatch (struct device *, void *, void *);
! 105: void mcpciaattach (struct device *, struct device *, void *);
! 106: void mcpcia_config_cleanup (void);
! 107:
! 108: int mcpciaprint (void *, const char *);
! 109:
! 110: struct cfattach mcpcia_ca = {
! 111: sizeof(struct mcpcia_softc), mcpciamatch, mcpciaattach
! 112: };
! 113:
! 114: struct cfdriver mcpcia_cd = {
! 115: NULL, "mcpcia", DV_DULL,
! 116: };
! 117:
! 118: /*
! 119: * We have one statically-allocated mcpcia_config structure; this is
! 120: * the one used for the console (which, coincidentally, is the only
! 121: * MCPCIA with an EISA adapter attached to it).
! 122: */
! 123: struct mcpcia_config mcpcia_console_configuration;
! 124:
! 125: int
! 126: mcpciaprint(aux, pnp)
! 127: void *aux;
! 128: const char *pnp;
! 129: {
! 130: register struct pcibus_attach_args *pba = aux;
! 131: /* only PCIs can attach to MCPCIA for now */
! 132: if (pnp)
! 133: printf("%s at %s", pba->pba_busname, pnp);
! 134: printf(" bus %d", pba->pba_bus);
! 135: return (UNCONF);
! 136: }
! 137:
! 138: int
! 139: mcpciamatch(parent, cf, aux)
! 140: struct device *parent;
! 141: void *cf;
! 142: void *aux;
! 143: {
! 144: struct mcbus_dev_attach_args *ma = aux;
! 145:
! 146: if (ma->ma_type == MCBUS_TYPE_PCI)
! 147: return (1);
! 148:
! 149: return (0);
! 150: }
! 151:
! 152: void
! 153: mcpciaattach(parent, self, aux)
! 154: struct device *parent;
! 155: struct device *self;
! 156: void *aux;
! 157: {
! 158: static int first = 1;
! 159: struct mcbus_dev_attach_args *ma = aux;
! 160: struct mcpcia_softc *mcp = (struct mcpcia_softc *)self;
! 161: struct mcpcia_config *ccp;
! 162: struct pcibus_attach_args pba;
! 163: u_int32_t ctl;
! 164:
! 165: /*
! 166: * Make sure this MCPCIA exists...
! 167: */
! 168: if (MCPCIA_PROBE(ma->ma_mid, ma->ma_gid)) {
! 169: mcp->mcpcia_cc = NULL;
! 170: printf(" (not present)\n");
! 171: return;
! 172: }
! 173: printf("\n");
! 174:
! 175: /*
! 176: * Determine if we're the console's MCPCIA.
! 177: */
! 178: if (ma->ma_mid == mcpcia_console_configuration.cc_mid &&
! 179: ma->ma_gid == mcpcia_console_configuration.cc_gid)
! 180: ccp = &mcpcia_console_configuration;
! 181: else {
! 182: ccp = malloc(sizeof(struct mcpcia_config), M_DEVBUF, M_WAITOK);
! 183: memset(ccp, 0, sizeof(struct mcpcia_config));
! 184:
! 185: ccp->cc_mid = ma->ma_mid;
! 186: ccp->cc_gid = ma->ma_gid;
! 187: }
! 188: mcp->mcpcia_cc = ccp;
! 189: ccp->cc_sc = mcp;
! 190:
! 191: /* This initializes cc_sysbase so we can do register access. */
! 192: mcpcia_init0(ccp, 1);
! 193:
! 194: ctl = REGVAL(MCPCIA_PCI_REV(ccp));
! 195: printf("%s: Horse Revision %d, %s Handed Saddle Revision %d,"
! 196: " CAP Revision %d\n", mcp->mcpcia_dev.dv_xname, HORSE_REV(ctl),
! 197: (SADDLE_TYPE(ctl) & 1)? "Right": "Left", SADDLE_REV(ctl),
! 198: CAP_REV(ctl));
! 199:
! 200: mcpcia_dma_init(ccp);
! 201:
! 202: /*
! 203: * Set up interrupts
! 204: */
! 205: pci_kn300_pickintr(ccp, first);
! 206: first = 0;
! 207:
! 208: /*
! 209: * Attach PCI bus
! 210: */
! 211: pba.pba_busname = "pci";
! 212: pba.pba_iot = &ccp->cc_iot;
! 213: pba.pba_memt = &ccp->cc_memt;
! 214: pba.pba_dmat =
! 215: alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI);
! 216: pba.pba_pc = &ccp->cc_pc;
! 217: pba.pba_domain = pci_ndomains++;
! 218: pba.pba_bus = 0;
! 219: pba.pba_bridgetag = NULL;
! 220:
! 221: (void) config_found(self, &pba, mcpciaprint);
! 222:
! 223: /*
! 224: * Clear any errors that may have occurred during the probe
! 225: * sequence.
! 226: */
! 227: REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF;
! 228: alpha_mb();
! 229: }
! 230:
! 231: void
! 232: mcpcia_init()
! 233: {
! 234: struct mcpcia_config *ccp = &mcpcia_console_configuration;
! 235: int i;
! 236:
! 237: /*
! 238: * Look for all of the MCPCIAs on the system. One of them
! 239: * will have an EISA attached to it. This MCPCIA is the
! 240: * only one that can be used for the console. Once we find
! 241: * that one, initialize it.
! 242: */
! 243: for (i = 0; i < MCPCIA_PER_MCBUS; i++) {
! 244: ccp->cc_mid = mcbus_mcpcia_probe_order[i];
! 245: /*
! 246: * XXX If we ever support more than one MCBUS, we'll
! 247: * XXX have to probe for them, and map them to unit
! 248: * XXX numbers.
! 249: */
! 250: ccp->cc_gid = MCBUS_GID_FROM_INSTANCE(0);
! 251: ccp->cc_sysbase = MCPCIA_SYSBASE(ccp);
! 252:
! 253: if (badaddr((void *)ALPHA_PHYS_TO_K0SEG(MCPCIA_PCI_REV(ccp)),
! 254: sizeof(u_int32_t)))
! 255: continue;
! 256:
! 257: if (EISA_PRESENT(REGVAL(MCPCIA_PCI_REV(ccp)))) {
! 258: mcpcia_init0(ccp, 0);
! 259: return;
! 260: }
! 261: }
! 262:
! 263: panic("mcpcia_init: unable to find EISA bus");
! 264: }
! 265:
! 266: void
! 267: mcpcia_init0(ccp, mallocsafe)
! 268: struct mcpcia_config *ccp;
! 269: int mallocsafe;
! 270: {
! 271: u_int32_t ctl;
! 272:
! 273: snprintf(ccp->pc_io_ex_name, sizeof ccp->pc_io_ex_name,
! 274: "mcpcia%d_bus_io", ccp->cc_mid);
! 275: snprintf(ccp->pc_mem_dex_name, sizeof ccp->pc_mem_dex_name,
! 276: "mcpciad%d_bus_mem", ccp->cc_mid);
! 277: snprintf(ccp->pc_mem_dex_name, sizeof ccp->pc_mem_sex_name,
! 278: "mcpcias%d_bus_mem", ccp->cc_mid);
! 279:
! 280: if (!ccp->cc_initted) {
! 281: /* don't do these twice since they set up extents */
! 282: mcpcia_bus_io_init(&ccp->cc_iot, ccp);
! 283: mcpcia_bus_mem_init(&ccp->cc_memt, ccp);
! 284: }
! 285: ccp->cc_mallocsafe = mallocsafe;
! 286:
! 287: mcpcia_pci_init(&ccp->cc_pc, ccp);
! 288:
! 289: /*
! 290: * Establish a precalculated base for convenience's sake.
! 291: */
! 292: ccp->cc_sysbase = MCPCIA_SYSBASE(ccp);
! 293:
! 294: /*
! 295: * Disable interrupts and clear errors prior to probing
! 296: */
! 297: REGVAL(MCPCIA_INT_MASK0(ccp)) = 0;
! 298: REGVAL(MCPCIA_INT_MASK1(ccp)) = 0;
! 299: REGVAL(MCPCIA_CAP_ERR(ccp)) = 0xFFFFFFFF;
! 300: alpha_mb();
! 301:
! 302: if (ccp == &mcpcia_console_configuration) {
! 303: /*
! 304: * Use this opportunity to also find out the MID and CPU
! 305: * type of the currently running CPU (that's us, billybob....)
! 306: */
! 307: ctl = REGVAL(MCPCIA_WHOAMI(ccp));
! 308: mcbus_primary.mcbus_cpu_mid = MCBUS_CPU_MID(ctl);
! 309: if ((MCBUS_CPU_INFO(ctl) & CPU_Fill_Err) == 0 &&
! 310: mcbus_primary.mcbus_valid == 0) {
! 311: mcbus_primary.mcbus_bcache =
! 312: MCBUS_CPU_INFO(ctl) & CPU_BCacheMask;
! 313: mcbus_primary.mcbus_valid = 1;
! 314: }
! 315: alpha_mb();
! 316: }
! 317:
! 318: alpha_pci_chipset = &ccp->cc_pc;
! 319: alpha_pci_chipset->pc_name = "mcpcia";
! 320: alpha_pci_chipset->pc_hae_mask = 0;
! 321: alpha_pci_chipset->pc_dense = MCPCIA_PCI_DENSE;
! 322:
! 323: ccp->cc_initted = 1;
! 324: }
! 325:
! 326: void
! 327: mcpcia_config_cleanup()
! 328: {
! 329: volatile u_int32_t ctl;
! 330: struct mcpcia_softc *mcp;
! 331: struct mcpcia_config *ccp;
! 332: int i;
! 333: extern struct cfdriver mcpcia_cd;
! 334:
! 335: /*
! 336: * Turn on Hard, Soft error interrupts. Maybe i2c too.
! 337: */
! 338: for (i = 0; i < mcpcia_cd.cd_ndevs; i++) {
! 339: if ((mcp = mcpcia_cd.cd_devs[i]) == NULL)
! 340: continue;
! 341:
! 342: ccp = mcp->mcpcia_cc;
! 343: if (ccp == NULL)
! 344: continue;
! 345:
! 346: ctl = REGVAL(MCPCIA_INT_MASK0(ccp));
! 347: ctl |= MCPCIA_GEN_IENABL;
! 348: REGVAL(MCPCIA_INT_MASK0(ccp)) = ctl;
! 349: alpha_mb();
! 350:
! 351: /* force stall while write completes */
! 352: ctl = REGVAL(MCPCIA_INT_MASK0(ccp));
! 353: }
! 354: }
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