/* $OpenBSD: ahc_isa.c,v 1.5 2000/03/22 02:57:17 smurph Exp $ */ /* $NetBSD: ahc_isa.c,v 1.5 1996/10/21 22:27:39 thorpej Exp $ */ /* * Product specific probe and attach routines for: * 284X VLbus SCSI controllers * * Copyright (c) 1996 Jason R. Thorpe. * All rights reserved. * * Copyright (c) 1995, 1996 Christopher G. Demetriou. * All rights reserved. * * Copyright (c) 1994, 1995, 1996 Justin T. Gibbs. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice immediately at the beginning of the file, without modification, * this list of conditions, and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * This front-end driver is really sort of a hack. The AHA-284X likes * to masquerade as an EISA device. However, on VLbus machines with * no EISA signature in the BIOS, the EISA bus will never be scanned. * This is intended to catch the 284X controllers on those systems * by looking in "EISA i/o space" for 284X controllers. * * This relies heavily on i/o port accounting. We also just use the * EISA macros for everything ... it's a real waste to redefine them. * * Note: there isn't any #ifdef for FreeBSD in this file, since the * FreeBSD EISA driver handles all cases of the 284X. * * -- Jason R. Thorpe * July 12, 1996 * * TODO: some code could be shared with ahc_eisa.c, but it would probably * be a logistical mightmare to even try. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEBUG #define bootverbose 1 #else #define bootverbose 0 #endif /* IO port address setting range as EISA slot number */ #define AHC_ISA_MIN_SLOT 0x1 /* from iobase = 0x1c00 */ #define AHC_ISA_MAX_SLOT 0xe /* to iobase = 0xec00 */ #define AHC_ISA_SLOT_OFFSET 0xc00 /* offset from EISA IO space */ #define AHC_ISA_IOSIZE 0x100 /* * I/O port offsets */ #define INTDEF 0x5cul /* Interrupt Definition Register */ #define AHC_ISA_VID (EISA_SLOTOFF_VID - AHC_ISA_SLOT_OFFSET) #define AHC_ISA_PID (EISA_SLOTOFF_PID - AHC_ISA_SLOT_OFFSET) #define AHC_ISA_PRIMING AHC_ISA_VID /* enable vendor/product ID */ /* * AHC_ISA_PRIMING register values (write) */ #define AHC_ISA_PRIMING_VID(index) (AHC_ISA_VID + (index)) #define AHC_ISA_PRIMING_PID(index) (AHC_ISA_PID + (index)) int ahc_isa_irq __P((bus_space_tag_t, bus_space_handle_t)); int ahc_isa_idstring __P((bus_space_tag_t, bus_space_handle_t, char *)); int ahc_isa_match __P((struct isa_attach_args *, bus_addr_t)); int ahc_isa_probe __P((struct device *, void *, void *)); void ahc_isa_attach __P((struct device *, struct device *, void *)); void aha2840_load_seeprom __P((struct ahc_softc *ahc)); struct cfattach ahc_isa_ca = { sizeof(struct ahc_softc), ahc_isa_probe, ahc_isa_attach }; /* * This keeps track of which slots are to be checked next if the * iobase locator is a wildcard. A simple static variable isn't enough, * since it's conceivable that a system might have more than one ISA * bus. * * The "bus" member is the unit number of the parent ISA bus, e.g. "0" * for "isa0". */ struct ahc_isa_slot { LIST_ENTRY(ahc_isa_slot) link; int bus; int slot; }; static LIST_HEAD(, ahc_isa_slot) ahc_isa_all_slots; static int ahc_isa_slot_initialized; /* * Return irq setting of the board, otherwise -1. */ int ahc_isa_irq(iot, ioh) bus_space_tag_t iot; bus_space_handle_t ioh; { int irq; u_char intdef; u_char hcntrl; /* Pause the card preseving the IRQ type */ hcntrl = bus_space_read_1(iot, ioh, HCNTRL) & IRQMS; bus_space_write_1(iot, ioh, HCNTRL, hcntrl | PAUSE); intdef = bus_space_read_1(iot, ioh, INTDEF); switch (irq = (intdef & 0xf)) { case 9: case 10: case 11: case 12: case 14: case 15: break; default: printf("ahc_isa_irq: illegal irq setting %d\n", intdef); return -1; } /* Note that we are going and return (to probe) */ return irq; } int ahc_isa_idstring(iot, ioh, idstring) bus_space_tag_t iot; bus_space_handle_t ioh; char *idstring; { u_int8_t vid[EISA_NVIDREGS], pid[EISA_NPIDREGS]; int i; /* Get the vendor ID bytes */ for (i = 0; i < EISA_NVIDREGS; i++) { bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, AHC_ISA_PRIMING_VID(i)); vid[i] = bus_space_read_1(iot, ioh, AHC_ISA_VID + i); } /* Check for device existence */ if (EISA_VENDID_NODEV(vid)) { #if 0 printf("ahc_isa_idstring: no device at 0x%lx\n", ioh); /* XXX knows about ioh guts */ printf("\t(0x%x, 0x%x)\n", vid[0], vid[1]); #endif return (0); } /* And check that the firmware didn't biff something badly */ if (EISA_VENDID_IDDELAY(vid)) { printf("ahc_isa_idstring: BIOS biffed it at 0x%lx\n", ioh); /* XXX knows about ioh guts */ return (0); } /* Get the product ID bytes */ for (i = 0; i < EISA_NPIDREGS; i++) { bus_space_write_1(iot, ioh, AHC_ISA_PRIMING, AHC_ISA_PRIMING_PID(i)); pid[i] = bus_space_read_1(iot, ioh, AHC_ISA_PID + i); } /* Create the ID string from the vendor and product IDs */ idstring[0] = EISA_VENDID_0(vid); idstring[1] = EISA_VENDID_1(vid); idstring[2] = EISA_VENDID_2(vid); idstring[3] = EISA_PRODID_0(pid); idstring[4] = EISA_PRODID_1(pid); idstring[5] = EISA_PRODID_2(pid); idstring[6] = EISA_PRODID_3(pid); idstring[7] = '\0'; /* sanity */ return (1); } int ahc_isa_match(ia, iobase) struct isa_attach_args *ia; bus_addr_t iobase; { bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int irq; char idstring[EISA_IDSTRINGLEN]; /* * Get a mapping for the while slot-specific address * space. If we can't, assume nothing's there, but * warn about it. */ if (bus_space_map(iot, iobase, AHC_ISA_IOSIZE, 0, &ioh)) { #if 0 /* * Don't print anything out here, since this could * be common on machines configured to look for * ahc_eisa and ahc_isa. */ printf("ahc_isa_match: can't map I/O space for 0x%x\n", iobase); #endif return (0); } if (!ahc_isa_idstring(iot, ioh, idstring)) irq = -1; /* cannot get the ID string */ else if (strcmp(idstring, "ADP7756") && strcmp(idstring, "ADP7757")) irq = -1; /* unknown ID strings */ else irq = ahc_isa_irq(iot, ioh); bus_space_unmap(iot, ioh, AHC_ISA_IOSIZE); if (irq < 0) return (0); if (ia->ia_irq != IRQUNK && ia->ia_irq != irq) { printf("ahc_isa_match: irq mismatch (kernel %d, card %d)\n", ia->ia_irq, irq); return (0); } /* We have a match */ ia->ia_iobase = iobase; ia->ia_irq = irq; ia->ia_iosize = AHC_ISA_IOSIZE; ia->ia_msize = 0; return (1); } /* * Check the slots looking for a board we recognise * If we find one, note it's address (slot) and call * the actual probe routine to check it out. */ int ahc_isa_probe(parent, match, aux) struct device *parent; void *match, *aux; { struct isa_attach_args *ia = aux; struct ahc_isa_slot *as; if (ahc_isa_slot_initialized == 0) { LIST_INIT(&ahc_isa_all_slots); ahc_isa_slot_initialized = 1; } if (ia->ia_iobase != IOBASEUNK) return (ahc_isa_match(ia, ia->ia_iobase)); /* * Find this bus's state. If we don't yet have a slot * marker, allocate and initialize one. */ for (as = ahc_isa_all_slots.lh_first; as != NULL; as = as->link.le_next) if (as->bus == parent->dv_unit) goto found_slot_marker; /* * Don't have one, so make one. */ as = (struct ahc_isa_slot *) malloc(sizeof(struct ahc_isa_slot), M_DEVBUF, M_NOWAIT); if (as == NULL) panic("ahc_isa_probe: can't allocate slot marker"); as->bus = parent->dv_unit; as->slot = AHC_ISA_MIN_SLOT; LIST_INSERT_HEAD(&ahc_isa_all_slots, as, link); found_slot_marker: for (; as->slot <= AHC_ISA_MAX_SLOT; as->slot++) { if (ahc_isa_match(ia, EISA_SLOT_ADDR(as->slot) + AHC_ISA_SLOT_OFFSET)) { as->slot++; /* next slot to search */ return (1); } } /* No matching cards were found. */ return (0); } void ahc_isa_attach(parent, self, aux) struct device *parent, *self; void *aux; { ahc_chip chip; struct ahc_softc *ahc = (void *)self; struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int irq; char idstring[EISA_IDSTRINGLEN]; const char *model; u_char channel = 'A'; ahc->sc_dmat = ia->ia_dmat; chip = AHC_VL; /* We are a VL Bus Controller */ if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) panic("ahc_isa_attach: could not map slot I/O addresses"); if (!ahc_isa_idstring(iot, ioh, idstring)) panic("ahc_isa_attach: could not read ID string"); if ((irq = ahc_isa_irq(iot, ioh)) < 0) panic("ahc_isa_attach: ahc_isa_irq failed!"); if (strcmp(idstring, "ADP7756") == 0) { model = EISA_PRODUCT_ADP7756; chip |= AHC_AIC7770; } else if (strcmp(idstring, "ADP7757") == 0) { model = EISA_PRODUCT_ADP7757; chip |= AHC_AIC7770; } else { panic("ahc_isa_attach: Unknown device type %s", idstring); } printf(": %s\n", model); ahc_construct(ahc, iot, ioh, chip, AHC_FNONE, AHC_AIC7770_FE, channel); #ifdef DEBUG /* * Tell the user what type of interrupts we're using. * usefull for debugging irq problems */ printf( "%s: Using %s Interrupts\n", ahc_name(ahc), ahc->pause & IRQMS ? "Level Sensitive" : "Edge Triggered"); #endif ahc->channel = 'A'; ahc->channel_b = 'B'; if (ahc_reset(ahc) != 0) return; /* * Now that we know we own the resources we need, do the * card initialization. */ aha2840_load_seeprom(ahc); /* * See if we have a Rev E or higher aic7770. Anything below a * Rev E will have a R/O autoflush disable configuration bit. * It's still not clear exactly what is differenent about the Rev E. * We think it allows 8 bit entries in the QOUTFIFO to support * "paging" SCBs so you can have more than 4 commands active at * once. */ { char *id_string; u_char sblkctl; u_char sblkctl_orig; sblkctl_orig = AHC_INB(ahc, SBLKCTL); sblkctl = sblkctl_orig ^ AUTOFLUSHDIS; AHC_OUTB(ahc, SBLKCTL, sblkctl); sblkctl = AHC_INB(ahc, SBLKCTL); if(sblkctl != sblkctl_orig) { id_string = "aic7770 >= Rev E, "; /* * Ensure autoflush is enabled */ sblkctl &= ~AUTOFLUSHDIS; AHC_OUTB(ahc, SBLKCTL, sblkctl); /* Allow paging on this adapter */ ahc->flags |= AHC_PAGESCBS; } else id_string = "aic7770 <= Rev C, "; printf("%s: %s", ahc_name(ahc), id_string); } /* Setup the FIFO threshold and the bus off time */ { u_char hostconf = AHC_INB(ahc, HOSTCONF); AHC_OUTB(ahc, BUSSPD, hostconf & DFTHRSH); AHC_OUTB(ahc, BUSTIME, (hostconf << 2) & BOFF); } /* * Generic aic7xxx initialization. */ if(ahc_init(ahc)){ ahc_free(ahc); return; } /* * Enable the board's BUS drivers */ AHC_OUTB(ahc, BCTL, ENABLE); /* * The IRQMS bit enables level sensitive interrupts only allow * IRQ sharing if its set. */ ahc->sc_ih = isa_intr_establish(ia->ia_ic, irq, ahc->pause & IRQMS ? IST_LEVEL : IST_EDGE, IPL_BIO, ahc_intr, ahc, ahc->sc_dev.dv_xname); if (ahc->sc_ih == NULL) { printf("%s: couldn't establish interrupt\n", ahc->sc_dev.dv_xname); ahc_free(ahc); return; } /* Attach sub-devices - always succeeds */ ahc_attach(ahc); } /* * Read the 284x SEEPROM. */ void aha2840_load_seeprom(struct ahc_softc *ahc) { struct seeprom_descriptor sd; struct seeprom_config sc; u_int16_t checksum = 0; u_int8_t scsi_conf; int have_seeprom; sd.sd_tag = ahc->sc_iot; sd.sd_bsh = ahc->sc_ioh; sd.sd_control_offset = SEECTL_2840; sd.sd_status_offset = STATUS_2840; sd.sd_dataout_offset = STATUS_2840; sd.sd_chip = C46; sd.sd_MS = 0; sd.sd_RDY = EEPROM_TF; sd.sd_CS = CS_2840; sd.sd_CK = CK_2840; sd.sd_DO = DO_2840; sd.sd_DI = DI_2840; if (bootverbose) printf("%s: Reading SEEPROM...", ahc_name(ahc)); have_seeprom = read_seeprom(&sd, (u_int16_t *)&sc, /*start_addr*/0, sizeof(sc)/2); if (have_seeprom) { /* Check checksum */ int i; int maxaddr = (sizeof(sc)/2) - 1; u_int16_t *scarray = (u_int16_t *)≻ for (i = 0; i < maxaddr; i++) checksum = checksum + scarray[i]; if (checksum != sc.checksum) { if(bootverbose) printf ("checksum error\n"); have_seeprom = 0; } else if (bootverbose) { printf("done.\n"); } } if (!have_seeprom) { if (bootverbose) printf("%s: No SEEPROM available\n", ahc_name(ahc)); ahc->flags |= AHC_USEDEFAULTS; } else { /* * Put the data we've collected down into SRAM * where ahc_init will find it. */ int i; int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8; u_int16_t discenable; discenable = 0; for (i = 0; i < max_targ; i++){ u_int8_t target_settings; target_settings = (sc.device_flags[i] & CFXFER) << 4; if (sc.device_flags[i] & CFSYNCH) target_settings |= SOFS; if (sc.device_flags[i] & CFWIDEB) target_settings |= WIDEXFER; if (sc.device_flags[i] & CFDISC) discenable |= (0x01 << i); ahc_outb(ahc, TARG_SCSIRATE + i, target_settings); } ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff)); ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff)); ahc->our_id = sc.brtime_id & CFSCSIID; scsi_conf = (ahc->our_id & 0x7); if (sc.adapter_control & CFSPARITY) scsi_conf |= ENSPCHK; if (sc.adapter_control & CFRESETB) scsi_conf |= RESET_SCSI; if (sc.bios_control & CF284XEXTEND) ahc->flags |= AHC_EXTENDED_TRANS_A; /* Set SCSICONF info */ ahc_outb(ahc, SCSICONF, scsi_conf); if (sc.adapter_control & CF284XSTERM) ahc->flags |= AHC_TERM_ENB_A; } }