aic7770.c
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上传日期:2013-02-24
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- /*
- * Product specific probe and attach routines for:
- * 27/284X and aic7770 motherboard SCSI controllers
- *
- * Copyright (c) 1994-1998, 2000, 2001 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, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
- *
- * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#14 $
- *
- * $FreeBSD: src/sys/dev/aic7xxx/aic7770.c,v 1.1 2000/09/16 20:02:27 gibbs Exp $
- */
- #include "aic7xxx_osm.h"
- #include "aic7xxx_inline.h"
- #include "aic7xxx_93cx6.h"
- #define ID_AIC7770 0x04907770
- #define ID_AHA_274x 0x04907771
- #define ID_AHA_284xB 0x04907756 /* BIOS enabled */
- #define ID_AHA_284x 0x04907757 /* BIOS disabled*/
- static void aha2840_load_seeprom(struct ahc_softc *ahc);
- static ahc_device_setup_t ahc_aic7770_VL_setup;
- static ahc_device_setup_t ahc_aic7770_EISA_setup;;
- static ahc_device_setup_t ahc_aic7770_setup;
- struct aic7770_identity aic7770_ident_table [] =
- {
- {
- ID_AHA_274x,
- 0xFFFFFFFF,
- "Adaptec 274X SCSI adapter",
- ahc_aic7770_EISA_setup
- },
- {
- ID_AHA_284xB,
- 0xFFFFFFFE,
- "Adaptec 284X SCSI adapter",
- ahc_aic7770_VL_setup
- },
- /* Generic chip probes for devices we don't know 'exactly' */
- {
- ID_AIC7770,
- 0xFFFFFFFF,
- "Adaptec aic7770 SCSI adapter",
- ahc_aic7770_EISA_setup
- }
- };
- const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
- struct aic7770_identity *
- aic7770_find_device(uint32_t id)
- {
- struct aic7770_identity *entry;
- int i;
- for (i = 0; i < ahc_num_aic7770_devs; i++) {
- entry = &aic7770_ident_table[i];
- if (entry->full_id == (id & entry->id_mask))
- return (entry);
- }
- return (NULL);
- }
- int
- aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry)
- {
- int error;
- u_int hostconf;
- u_int irq;
- u_int intdef;
- error = entry->setup(ahc);
- if (error != 0)
- return (error);
- error = aic7770_map_registers(ahc);
- if (error != 0)
- return (error);
- ahc->description = entry->name;
- error = ahc_softc_init(ahc);
- error = ahc_reset(ahc);
- if (error != 0)
- return (error);
- /* Make sure we have a valid interrupt vector */
- intdef = ahc_inb(ahc, INTDEF);
- irq = intdef & VECTOR;
- switch (irq) {
- case 9:
- case 10:
- case 11:
- case 12:
- case 14:
- case 15:
- break;
- default:
- printf("aic7770_config: illegal irq setting %dn", intdef);
- return (ENXIO);
- }
- if ((intdef & EDGE_TRIG) != 0)
- ahc->flags |= AHC_EDGE_INTERRUPT;
- switch (ahc->chip & (AHC_EISA|AHC_VL)) {
- case AHC_EISA:
- {
- u_int biosctrl;
- u_int scsiconf;
- u_int scsiconf1;
- biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
- scsiconf = ahc_inb(ahc, SCSICONF);
- scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
- /* Get the primary channel information */
- if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
- ahc->flags |= 1;
- if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
- ahc->flags |= AHC_USEDEFAULTS;
- } else {
- if ((ahc->features & AHC_WIDE) != 0) {
- ahc->our_id = scsiconf1 & HWSCSIID;
- if (scsiconf & TERM_ENB)
- ahc->flags |= AHC_TERM_ENB_A;
- } else {
- ahc->our_id = scsiconf & HSCSIID;
- ahc->our_id_b = scsiconf1 & HSCSIID;
- if (scsiconf & TERM_ENB)
- ahc->flags |= AHC_TERM_ENB_A;
- if (scsiconf1 & TERM_ENB)
- ahc->flags |= AHC_TERM_ENB_B;
- }
- }
- /*
- * We have no way to tell, so assume extended
- * translation is enabled.
- */
- ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
- break;
- }
- case AHC_VL:
- {
- aha2840_load_seeprom(ahc);
- break;
- }
- default:
- break;
- }
- /*
- * Ensure autoflush is enabled
- */
- ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
- /* Setup the FIFO threshold and the bus off time */
- hostconf = ahc_inb(ahc, HOSTCONF);
- ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
- ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
- /*
- * Generic aic7xxx initialization.
- */
- error = ahc_init(ahc);
- if (error != 0)
- return (error);
- /*
- * Link this softc in with all other ahc instances.
- */
- ahc_softc_insert(ahc);
- error = aic7770_map_int(ahc, irq);
- if (error != 0)
- return (error);
- /*
- * Enable the board's BUS drivers
- */
- ahc_outb(ahc, BCTL, ENABLE);
- /*
- * Allow interrupts.
- */
- ahc_intr_enable(ahc, TRUE);
- return (0);
- }
- /*
- * Read the 284x SEEPROM.
- */
- static void
- aha2840_load_seeprom(struct ahc_softc *ahc)
- {
- struct seeprom_descriptor sd;
- struct seeprom_config sc;
- uint16_t checksum = 0;
- uint8_t scsi_conf;
- int have_seeprom;
- sd.sd_ahc = ahc;
- 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,
- (uint16_t *)&sc,
- /*start_addr*/0,
- sizeof(sc)/2);
- if (have_seeprom) {
- /* Check checksum */
- int i;
- int maxaddr = (sizeof(sc)/2) - 1;
- uint16_t *scarray = (uint16_t *)≻
- for (i = 0; i < maxaddr; i++)
- checksum = checksum + scarray[i];
- if (checksum != sc.checksum) {
- if(bootverbose)
- printf ("checksum errorn");
- have_seeprom = 0;
- } else if (bootverbose) {
- printf("done.n");
- }
- }
- if (!have_seeprom) {
- if (bootverbose)
- printf("%s: No SEEPROM availablen", 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;
- uint16_t discenable;
- discenable = 0;
- for (i = 0; i < max_targ; i++){
- uint8_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;
- }
- }
- static int
- ahc_aic7770_VL_setup(struct ahc_softc *ahc)
- {
- int error;
- error = ahc_aic7770_setup(ahc);
- ahc->chip |= AHC_VL;
- return (error);
- }
- static int
- ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
- {
- int error;
- error = ahc_aic7770_setup(ahc);
- ahc->chip |= AHC_EISA;
- return (error);
- }
- static int
- ahc_aic7770_setup(struct ahc_softc *ahc)
- {
- ahc->channel = 'A';
- ahc->channel_b = 'B';
- ahc->chip = AHC_AIC7770;
- ahc->features = AHC_AIC7770_FE;
- ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
- ahc->flags |= AHC_PAGESCBS;
- return (0);
- }