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freebsd-skq/sys/i386/eisa/ahc_eisa.c
Justin T. Gibbs 493950f6d9 Correct the comment for the last commit. 
Clean up the handling of failure modes in our attach so we don't free
resources twice.  ahc_free() will do all of the work for us (as would
be required by an unload event) so we only need to handle resources that
the softc has not taken ownership of.
1999-05-17 21:56:00 +00:00

479 lines
11 KiB
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/*
* 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 1.9 1999/05/17 21:51:41 gibbs Exp $
*/
#include "eisa.h"
#if NEISA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <i386/eisa/eisaconf.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_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 void aha2840_load_seeprom(struct ahc_softc *ahc);
static const char *aic7770_match(eisa_id_t type);
static const char*
aic7770_match(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
aic7770_probe(device_t dev)
{
const char *desc;
u_int32_t iobase;
u_int32_t irq;
u_int8_t intdef;
u_int8_t hcntrl;
desc = aic7770_match(eisa_get_id(dev));
if (!desc)
return (ENXIO);
device_set_desc(dev, desc);
iobase = (eisa_get_slot(dev) * 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(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", eisa_get_slot(dev),
intdef);
irq = 0;
break;
}
if (irq == 0)
return ENXIO;
eisa_add_intr(dev, irq);
return 0;
}
static int
aic7770_attach(device_t dev)
{
ahc_chip chip;
bus_dma_tag_t parent_dmat;
struct ahc_softc *ahc;
struct resource *io;
int error, rid;
int shared;
rid = 0;
io = NULL;
ahc = NULL;
switch (eisa_get_id(dev)) {
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");
goto bad;
}
/* 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, &parent_dmat);
if (error != 0) {
printf("ahc_eisa_attach: Could not allocate DMA tag "
"- error %d\n", error);
goto bad;
}
io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (!io) {
device_printf(dev, "No I/O space?!\n");
return ENOMEM;
}
if (!(ahc = ahc_alloc(dev, io, SYS_RES_IOPORT, rid,
parent_dmat, chip, AHC_AIC7770_FE, AHC_FNONE,
NULL)))
goto bad;
io = NULL;
ahc->channel = 'A';
ahc->channel_b = 'B';
if (ahc_reset(ahc) != 0) {
goto bad;
}
/*
* The IRQMS bit enables level sensitive interrupts. Only allow
* IRQ sharing if it's set.
*/
shared = (ahc->pause & IRQMS) ? RF_SHAREABLE : 0;
rid = 0;
ahc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
0, ~0, 1, shared | RF_ACTIVE);
if (ahc->irq == NULL) {
device_printf(dev, "Can't allocate interrupt\n");
goto bad;
}
ahc->irq_res_type = SYS_RES_IRQ;
/*
* 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)) {
/*
* The board's IRQ line is not yet enabled so it's safe
* to release the irq.
*/
goto bad;
}
/*
* Enable the board's BUS drivers
*/
ahc_outb(ahc, BCTL, ENABLE);
/* Attach sub-devices - always succeeds */
ahc_attach(ahc);
return 0;
bad:
if (ahc != NULL)
ahc_free(ahc);
if (io != NULL)
bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
return -1;
}
/*
* 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;
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;
}
}
static device_method_t ahc_eisa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, aic7770_probe),
DEVMETHOD(device_attach, aic7770_attach),
{ 0, 0 }
};
static driver_t ahc_eisa_driver = {
"ahc",
ahc_eisa_methods,
1, /* unused */
};
static devclass_t ahc_devclass;
DRIVER_MODULE(ahc, eisa, ahc_eisa_driver, ahc_devclass, 0, 0);
#endif /* NEISA > 0 */
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