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freebsd-skq/sys/i386/eisa/ahc_eisa.c
gibbs 9ede5f09d8 Bring back support for honoring the primary channel setting for twin channel 
EISA adapters.  This could have caused the system to find the wrong root
disk.

Reviewed by:	 J Wunsch <j@ida.interface-business.de>
1998-10-15 18:21:50 +00:00

475 lines
11 KiB
C
Raw Blame History

/*
* Product specific probe and attach routines for:
* 27/284X and aic7770 motherboard SCSI controllers
*
* Copyright (c) 1994, 1995, 1996, 1997, 1998 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. 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.
*
* $Id: ahc_eisa.c,v 1.2 1998/10/09 17:42:28 gibbs Exp $
*/
#include "eisa.h"
#if NEISA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <i386/eisa/eisaconf.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/scsi/scsi_all.h>
#include <dev/aic7xxx/aic7xxx.h>
#include <dev/aic7xxx/93cx6.h>
#include <aic7xxx_reg.h>
#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(void);
static int aic7770_attach(struct eisa_device *e_dev);
static void aha2840_load_seeprom(struct ahc_softc *ahc);
static struct eisa_driver ahc_eisa_driver =
{
"ahc",
aic7770probe,
aic7770_attach,
/*shutdown*/NULL,
&ahc_unit
};
DATA_SET (eisadriver_set, ahc_eisa_driver);
static const char *aic7770_match(eisa_id_t type);
static const 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_int32_t iobase;
u_int32_t irq;
u_int8_t intdef;
u_int8_t hcntrl;
struct eisa_device *e_dev;
int count;
e_dev = NULL;
count = 0;
while ((e_dev = eisa_match_dev(e_dev, aic7770_match))) {
iobase = (e_dev->ioconf.slot * EISA_SLOT_SIZE)
+ AHC_EISA_SLOT_OFFSET;
/* Pause the card preseving the IRQ type */
hcntrl = inb(iobase + HCNTRL) & IRQMS;
outb(iobase + HCNTRL, hcntrl | PAUSE);
eisa_add_iospace(e_dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE);
intdef = inb(INTDEF + iobase);
irq = intdef & 0xf;
switch (irq) {
case 9:
case 10:
case 11:
case 12:
case 14:
case 15:
break;
default:
printf("aic7770 at slot %d: illegal "
"irq setting %d\n", e_dev->ioconf.slot,
intdef);
irq = 0;
break;
}
if (irq == 0)
continue;
eisa_add_intr(e_dev, irq);
eisa_registerdev(e_dev, &ahc_eisa_driver);
count++;
}
return count;
}
static int
aic7770_attach(struct eisa_device *e_dev)
{
ahc_chip chip;
struct ahc_softc *ahc;
resvaddr_t *iospace;
int unit = e_dev->unit;
int irq;
int error;
if (TAILQ_FIRST(&e_dev->ioconf.irqs) == NULL)
return (-1);
irq = TAILQ_FIRST(&e_dev->ioconf.irqs)->irq_no;
iospace = e_dev->ioconf.ioaddrs.lh_first;
if (!iospace)
return -1;
switch (e_dev->id) {
case EISA_DEVICE_ID_ADAPTEC_274x:
case EISA_DEVICE_ID_ADAPTEC_AIC7770:
chip = AHC_AIC7770|AHC_EISA;
break;
case EISA_DEVICE_ID_ADAPTEC_284xB:
case EISA_DEVICE_ID_ADAPTEC_284x:
chip = AHC_AIC7770|AHC_VL;
break;
default:
printf("aic7770_attach: Unknown device type!\n");
return -1;
break;
}
if (!(ahc = ahc_alloc(unit, iospace->addr, NULL,
chip, AHC_AIC7770_FE, AHC_FNONE, NULL)))
return -1;
ahc->channel = 'A';
ahc->channel_b = 'B';
/* XXX Should be a child of the EISA bus dma tag */
error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/0,
/*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/MAXBSIZE,
/*nsegments*/AHC_NSEG,
/*maxsegsz*/AHC_MAXTRANSFER_SIZE,
/*flags*/BUS_DMA_ALLOCNOW, &ahc->dmat);
if (error != 0) {
printf("%s: Could not allocate DMA tag - error %d\n",
ahc_name(ahc), error);
ahc_free(ahc);
return -1;
}
eisa_reg_start(e_dev);
if (eisa_reg_iospace(e_dev, iospace)) {
ahc_free(ahc);
return -1;
}
if (ahc_reset(ahc) != 0) {
ahc_free(ahc);
return -1;
}
/*
* The IRQMS bit enables level sensitive interrupts. Only allow
* IRQ sharing if it's set.
*/
if (eisa_reg_intr(e_dev, irq, ahc_intr, (void *)ahc, &cam_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) {
printf("%s: Using %s Interrupts\n",
ahc_name(ahc),
ahc->pause & IRQMS ?
"Level Sensitive" : "Edge Triggered");
}
/*
* Now that we know we own the resources we need, do the
* card initialization.
*
* First, the aic7770 card specific setup.
*/
switch (chip & (AHC_EISA|AHC_VL)) {
case AHC_EISA:
{
u_int biosctrl;
u_int scsiconf;
u_int scsiconf1;
#if DEBUG
int i;
#endif
biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
scsiconf = ahc_inb(ahc, SCSICONF);
scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
#if DEBUG
for (i = TARG_SCSIRATE; i <= HA_274_BIOSCTRL; i+=8) {
printf("0x%x, 0x%x, 0x%x, 0x%x, "
"0x%x, 0x%x, 0x%x, 0x%x\n",
ahc_inb(ahc, i),
ahc_inb(ahc, i+1),
ahc_inb(ahc, i+2),
ahc_inb(ahc, i+3),
ahc_inb(ahc, i+4),
ahc_inb(ahc, i+5),
ahc_inb(ahc, i+6),
ahc_inb(ahc, i+7));
}
#endif
/* Get the primary channel information */
if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
ahc->flags |= AHC_CHANNEL_B_PRIMARY;
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;
}
/*
* See if we have a Rev E or higher aic7770. Anything below a
* Rev E will have a R/O autoflush disable configuration bit.
*/
{
char *id_string;
u_int8_t sblkctl;
u_int8_t 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);
} else
id_string = "aic7770 <= Rev C, ";
printf("%s: %s", ahc_name(ahc), id_string);
}
/* Setup the FIFO threshold and the bus off time */
{
u_int8_t 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);
/*
* The board's IRQ line is not yet enabled so it's safe
* to release the irq.
*/
eisa_release_intr(e_dev, irq, ahc_intr);
return -1;
}
/*
* Enable the board's BUS drivers
*/
ahc_outb(ahc, BCTL, 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;
}
/* Attach sub-devices - always succeeds */
ahc_attach(ahc);
return 0;
}
/*
* Read the 284x SEEPROM.
*/
static 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->tag;
sd.sd_bsh = ahc->bsh;
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 *)&sc;
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;
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)
ahc->discenable |= (0x01 << i);
ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
}
ahc_outb(ahc, DISC_DSB, ~(ahc->discenable & 0xff));
ahc_outb(ahc, DISC_DSB + 1, ~((ahc->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;
}
}
#endif /* NEISA > 0 */
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