Annotation of sys/dev/pci/cac_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cac_pci.c,v 1.10 2005/08/09 04:10:10 mickey Exp $ */
! 2: /* $NetBSD: cac_pci.c,v 1.10 2001/01/10 16:48:04 ad Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Andrew Doran.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * PCI front-end for cac(4) driver.
! 42: */
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/systm.h>
! 46: #include <sys/kernel.h>
! 47: #include <sys/device.h>
! 48: #include <sys/queue.h>
! 49:
! 50: #include <machine/endian.h>
! 51: #include <machine/bus.h>
! 52:
! 53: #include <dev/pci/pcidevs.h>
! 54: #include <dev/pci/pcivar.h>
! 55:
! 56: #include <scsi/scsi_all.h>
! 57: #include <scsi/scsi_disk.h>
! 58: #include <scsi/scsiconf.h>
! 59:
! 60: #include <dev/ic/cacreg.h>
! 61: #include <dev/ic/cacvar.h>
! 62:
! 63: void cac_pci_attach(struct device *, struct device *, void *);
! 64: const struct cac_pci_type *cac_pci_findtype(struct pci_attach_args *);
! 65: int cac_pci_match(struct device *, void *, void *);
! 66:
! 67: struct cac_ccb *cac_pci_l0_completed(struct cac_softc *);
! 68: int cac_pci_l0_fifo_full(struct cac_softc *);
! 69: void cac_pci_l0_intr_enable(struct cac_softc *, int);
! 70: int cac_pci_l0_intr_pending(struct cac_softc *);
! 71: void cac_pci_l0_submit(struct cac_softc *, struct cac_ccb *);
! 72:
! 73: struct cfattach cac_pci_ca = {
! 74: sizeof(struct cac_softc), cac_pci_match, cac_pci_attach
! 75: };
! 76:
! 77: static const struct cac_linkage cac_pci_l0 = {
! 78: cac_pci_l0_completed,
! 79: cac_pci_l0_fifo_full,
! 80: cac_pci_l0_intr_enable,
! 81: cac_pci_l0_intr_pending,
! 82: cac_pci_l0_submit
! 83: };
! 84:
! 85: #define CT_STARTFW 0x01 /* Need to start controller firmware */
! 86:
! 87: static const
! 88: struct cac_pci_type {
! 89: int ct_subsysid;
! 90: int ct_flags;
! 91: const struct cac_linkage *ct_linkage;
! 92: char *ct_typestr;
! 93: } cac_pci_type[] = {
! 94: { 0x40300e11, 0, &cac_l0, "SMART-2/P" },
! 95: { 0x40310e11, 0, &cac_l0, "SMART-2SL" },
! 96: { 0x40320e11, 0, &cac_l0, "Smart Array 3200" },
! 97: { 0x40330e11, 0, &cac_l0, "Smart Array 3100ES" },
! 98: { 0x40340e11, 0, &cac_l0, "Smart Array 221" },
! 99: { 0x40400e11, CT_STARTFW, &cac_pci_l0, "Integrated Array" },
! 100: { 0x40480e11, CT_STARTFW, &cac_pci_l0, "RAID LC2" },
! 101: { 0x40500e11, 0, &cac_pci_l0, "Smart Array 4200" },
! 102: { 0x40510e11, 0, &cac_pci_l0, "Smart Array 4200ES" },
! 103: { 0x40580e11, 0, &cac_pci_l0, "Smart Array 431" },
! 104: };
! 105:
! 106: static const
! 107: struct cac_pci_product {
! 108: u_short cp_vendor;
! 109: u_short cp_product;
! 110: } cac_pci_product[] = {
! 111: { PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_SMART2P },
! 112: { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_CPQ42XX },
! 113: { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1510 },
! 114: };
! 115:
! 116: const struct cac_pci_type *
! 117: cac_pci_findtype(pa)
! 118: struct pci_attach_args *pa;
! 119: {
! 120: const struct cac_pci_type *ct;
! 121: const struct cac_pci_product *cp;
! 122: pcireg_t subsysid;
! 123: int i;
! 124:
! 125: cp = cac_pci_product;
! 126: i = 0;
! 127: while (i < sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) {
! 128: if (PCI_VENDOR(pa->pa_id) == cp->cp_vendor &&
! 129: PCI_PRODUCT(pa->pa_id) == cp->cp_product)
! 130: break;
! 131: cp++;
! 132: i++;
! 133: }
! 134: if (i == sizeof(cac_pci_product) / sizeof(cac_pci_product[0]))
! 135: return (NULL);
! 136:
! 137: subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
! 138: ct = cac_pci_type;
! 139: i = 0;
! 140: while (i < sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) {
! 141: if (subsysid == ct->ct_subsysid)
! 142: break;
! 143: ct++;
! 144: i++;
! 145: }
! 146: if (i == sizeof(cac_pci_type) / sizeof(cac_pci_type[0]))
! 147: return (NULL);
! 148:
! 149: return (ct);
! 150: }
! 151:
! 152: int
! 153: cac_pci_match(parent, match, aux)
! 154: struct device *parent;
! 155: void *match, *aux;
! 156: {
! 157:
! 158: return (cac_pci_findtype(aux) != NULL);
! 159: }
! 160:
! 161: void
! 162: cac_pci_attach(parent, self, aux)
! 163: struct device *parent;
! 164: struct device *self;
! 165: void *aux;
! 166: {
! 167: struct pci_attach_args *pa;
! 168: const struct cac_pci_type *ct;
! 169: struct cac_softc *sc;
! 170: pci_chipset_tag_t pc;
! 171: pci_intr_handle_t ih;
! 172: const char *intrstr;
! 173: pcireg_t reg;
! 174: bus_size_t size;
! 175: int memr, ior, i;
! 176:
! 177: sc = (struct cac_softc *)self;
! 178: pa = (struct pci_attach_args *)aux;
! 179: pc = pa->pa_pc;
! 180: ct = cac_pci_findtype(pa);
! 181:
! 182: /*
! 183: * Map the PCI register window.
! 184: */
! 185: memr = -1;
! 186: ior = -1;
! 187:
! 188: for (i = 0x10; i <= 0x14; i += 4) {
! 189: reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i);
! 190:
! 191: if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) {
! 192: if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0)
! 193: ior = i;
! 194: } else {
! 195: if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0)
! 196: memr = i;
! 197: }
! 198: }
! 199:
! 200: if (memr != -1) {
! 201: if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0,
! 202: &sc->sc_iot, &sc->sc_ioh, NULL, &size, 0))
! 203: memr = -1;
! 204: else
! 205: ior = -1;
! 206: }
! 207: if (ior != -1)
! 208: if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0,
! 209: &sc->sc_iot, &sc->sc_ioh, NULL, &size, 0))
! 210: ior = -1;
! 211: if (memr == -1 && ior == -1) {
! 212: printf("%s: can't map i/o or memory space\n", self->dv_xname);
! 213: return;
! 214: }
! 215:
! 216: sc->sc_dmat = pa->pa_dmat;
! 217:
! 218: /* Map and establish the interrupt. */
! 219: if (pci_intr_map(pa, &ih)) {
! 220: printf(": can't map interrupt\n");
! 221: bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
! 222: return;
! 223: }
! 224: intrstr = pci_intr_string(pc, ih);
! 225: sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, cac_intr,
! 226: sc, sc->sc_dv.dv_xname);
! 227: if (sc->sc_ih == NULL) {
! 228: printf(": can't establish interrupt");
! 229: if (intrstr != NULL)
! 230: printf(" at %s", intrstr);
! 231: printf("\n");
! 232: bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
! 233: return;
! 234: }
! 235:
! 236: printf(": %s Compaq %s\n", intrstr, ct->ct_typestr);
! 237:
! 238: /* Now attach to the bus-independent code. */
! 239: sc->sc_cl = ct->ct_linkage;
! 240: cac_init(sc, (ct->ct_flags & CT_STARTFW) != 0);
! 241: }
! 242:
! 243: void
! 244: cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
! 245: {
! 246:
! 247: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0,
! 248: sc->sc_dmamap->dm_mapsize,
! 249: BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
! 250: cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr);
! 251: }
! 252:
! 253: struct cac_ccb *
! 254: cac_pci_l0_completed(struct cac_softc *sc)
! 255: {
! 256: struct cac_ccb *ccb;
! 257: u_int32_t off;
! 258:
! 259: if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU)
! 260: return (NULL);
! 261:
! 262: cac_outl(sc, CAC_42REG_DONE_FIFO, 0);
! 263: off = (off & ~3) - sc->sc_ccbs_paddr;
! 264: ccb = (struct cac_ccb *)(sc->sc_ccbs + off);
! 265:
! 266: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0,
! 267: sc->sc_dmamap->dm_mapsize,
! 268: BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
! 269:
! 270: return (ccb);
! 271: }
! 272:
! 273: int
! 274: cac_pci_l0_intr_pending(struct cac_softc *sc)
! 275: {
! 276:
! 277: return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0);
! 278: }
! 279:
! 280: void
! 281: cac_pci_l0_intr_enable(struct cac_softc *sc, int state)
! 282: {
! 283:
! 284: cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8)); /* XXX */
! 285: }
! 286:
! 287: int
! 288: cac_pci_l0_fifo_full(struct cac_softc *sc)
! 289: {
! 290:
! 291: return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0);
! 292: }
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