/* * Product specific probe and attach routines for: * 27/284X and aic7770 motherboard SCSI controllers * * Copyright (c) 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. Absolutely no warranty of function or purpose is made by the author * Justin T. Gibbs. * 4. Modifications may be freely made to this file if the above conditions * are met. * * $Id: aic7770.c,v 1.24 1996/01/31 18:02:17 gibbs Exp $ */ #include "eisa.h" #if NEISA > 0 #include #include #include #include #include #include #include #include #include #include #define EISA_DEVICE_ID_ADAPTEC_AIC7770 0x04907770 #define EISA_DEVICE_ID_ADAPTEC_274x 0x04907771 #define EISA_DEVICE_ID_ADAPTEC_284xB 0x04907756 /* BIOS enabled */ #define EISA_DEVICE_ID_ADAPTEC_284x 0x04907757 /* BIOS disabled*/ #define AHC_EISA_SLOT_OFFSET 0xc00 #define AHC_EISA_IOSIZE 0x100 #define INTDEF 0x5cul /* Interrupt Definition Register */ static int aic7770probe __P((void)); static int aic7770_attach __P((struct eisa_device *e_dev)); static struct eisa_driver ahc_eisa_driver = { "ahc", aic7770probe, aic7770_attach, /*shutdown*/NULL, &ahc_unit }; DATA_SET (eisadriver_set, ahc_eisa_driver); static struct kern_devconf kdc_aic7770 = { 0, 0, 0, /* filled in by dev_attach */ "ahc", 0, { MDDT_EISA, 0, "bio" }, eisa_generic_externalize, 0, 0, EISA_EXTERNALLEN, &kdc_eisa0, /* parent */ 0, /* parentdata */ DC_UNCONFIGURED, /* always start out here */ NULL, DC_CLS_MISC /* host adapters aren't special */ }; static char *aic7770_match __P((eisa_id_t type)); static char* aic7770_match(type) eisa_id_t type; { switch(type) { case EISA_DEVICE_ID_ADAPTEC_AIC7770: return ("Adaptec aic7770 SCSI host adapter"); break; case EISA_DEVICE_ID_ADAPTEC_274x: return ("Adaptec 274X SCSI host adapter"); break; case EISA_DEVICE_ID_ADAPTEC_284xB: case EISA_DEVICE_ID_ADAPTEC_284x: return ("Adaptec 284X SCSI host adapter"); break; default: break; } return (NULL); } static int aic7770probe(void) { u_long iobase; char intdef; u_long irq; struct eisa_device *e_dev = NULL; int count; count = 0; while ((e_dev = eisa_match_dev(e_dev, aic7770_match))) { iobase = (e_dev->ioconf.slot * EISA_SLOT_SIZE) + AHC_EISA_SLOT_OFFSET; ahc_reset(iobase); eisa_add_iospace(e_dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE); intdef = inb(INTDEF + iobase); switch (intdef & 0xf) { case 9: irq = 9; break; case 10: irq = 10; break; case 11: irq = 11; break; case 12: irq = 12; break; case 14: irq = 14; break; case 15: irq = 15; break; default: printf("aic7770 at slot %d: illegal " "irq setting %d\n", e_dev->ioconf.slot, intdef); continue; } eisa_add_intr(e_dev, irq); eisa_registerdev(e_dev, &ahc_eisa_driver, &kdc_aic7770); if(e_dev->id == EISA_DEVICE_ID_ADAPTEC_284xB || e_dev->id == EISA_DEVICE_ID_ADAPTEC_284x) { /* Our real parent is the isa bus. Say so. */ e_dev->kdc->kdc_parent = &kdc_isa0; } count++; } return count; } static int aic7770_attach(e_dev) struct eisa_device *e_dev; { ahc_type type; struct ahc_data *ahc; resvaddr_t *iospace; u_long iobase; int unit = e_dev->unit; int irq = ffs(e_dev->ioconf.irq) - 1; iospace = e_dev->ioconf.ioaddrs.lh_first; if(!iospace) return -1; iobase = iospace->addr; switch(e_dev->id) { case EISA_DEVICE_ID_ADAPTEC_AIC7770: type = AHC_AIC7770; break; case EISA_DEVICE_ID_ADAPTEC_274x: type = AHC_274; break; case EISA_DEVICE_ID_ADAPTEC_284xB: case EISA_DEVICE_ID_ADAPTEC_284x: type = AHC_284; break; default: printf("aic7770_attach: Unknown device type!\n"); return -1; break; } if(!(ahc = ahc_alloc(unit, iospace->addr, type, AHC_FNONE))) return -1; eisa_reg_start(e_dev); if(eisa_reg_iospace(e_dev, iospace)) { ahc_free(ahc); return -1; } /* * The IRQMS bit enables level sensitive interrupts only allow * IRQ sharing if its set. */ if(eisa_reg_intr(e_dev, irq, ahc_intr, (void *)ahc, &bio_imask, /*shared ==*/ahc->pause & IRQMS)) { ahc_free(ahc); return -1; } eisa_reg_end(e_dev); /* * Tell the user what type of interrupts we're using. * usefull for debugging irq problems */ if(bootverbose) { if(ahc->pause & IRQMS) printf("ahc%d: Using Level Sensitive " "Interrupts\n", unit); else printf("ahc%d: Using Edge Triggered " "Interrupts\n", unit); } /* * Now that we know we own the resources we need, do the * card initialization. * * First, the aic7770 card specific setup. */ switch( ahc->type ) { case AHC_AIC7770: { /* XXX * It would be really nice to know if the BIOS * was installed for the motherboard controllers, * but I don't know how to yet. Assume its enabled * for now. */ break; } case AHC_274: { if((inb(HA_274_BIOSCTRL + iobase) & BIOSMODE) == BIOSDISABLED) ahc->flags |= AHC_USEDEFAULTS; break; } case AHC_284: { /* XXX * All values are automagically intialized at * POST for these cards, so we can always rely * on the Scratch Ram values. However, we should * read the SEEPROM here (Dan has the code to do * it) so we can say what kind of translation the * BIOS is using. Printing out the geometry could * save a lot of users the grief of failed installs. */ break; } } /* * See if we have a Rev E or higher aic7770. Anything below a * Rev E will have a R/O autoflush disable configuration bit. * Its still not clear exactly what is differenent about the Rev E. * We think it has more QINFIFO and QOUTFIFO space to support * "paging" SCBs so you can have more than 4 commands active at * once. We may use this information later. */ { char *id_string; u_char sblkctl; u_char sblkctl_orig; sblkctl_orig = inb(SBLKCTL + iobase); sblkctl = sblkctl_orig ^ AUTOFLUSHDIS; outb(SBLKCTL + iobase, sblkctl); sblkctl = inb(SBLKCTL + iobase); if(sblkctl != sblkctl_orig) { id_string = "aic7770 >= Rev E, "; /* * Ensure autoflush is enabled */ sblkctl &= ~AUTOFLUSHDIS; outb(SBLKCTL + iobase, sblkctl); } else id_string = "aic7770 <= Rev C, "; printf("ahc%d: %s", unit, id_string); } /* * Only four SCBs on these cards. If we ever do SCB paging, * we could support 255 on the Rev E cards. */ ahc->maxscbs = 0x4; /* Setup the FIFO threshold and the bus off time */ if(ahc->flags & AHC_USEDEFAULTS) { outb(BUSSPD + iobase, DFTHRSH_100); outb(BUSTIME + iobase, BOFF_60BCLKS); } else { u_char hostconf = inb(HOSTCONF + iobase); outb(BUSSPD + iobase, hostconf & DFTHRSH); outb(BUSTIME + iobase, (hostconf << 2) & BOFF); } /* * Generic aic7xxx initialization. */ if(ahc_init(ahc)){ ahc_free(ahc); /* * The board's IRQ line is not yet enabled so its safe * to release the irq. */ eisa_release_intr(e_dev, irq, ahc_intr); return -1; } /* * Enable the board's BUS drivers */ outb(BCTL + iobase, ENABLE); /* * Enable our interrupt handler. */ if(eisa_enable_intr(e_dev, irq)) { ahc_free(ahc); eisa_release_intr(e_dev, irq, ahc_intr); return -1; } e_dev->kdc->kdc_state = DC_BUSY; /* host adapters always busy */ /* Attach sub-devices - always succeeds */ ahc_attach(ahc); return 0; } #endif /* NEISA > 0 */