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09e505318a
HardenedBSD/sys/pci/aic7870.c
Justin T. Gibbs 09e505318a Add the definition for the CFAUTOTERM bit in the aic78xx SEEPROM. 
Add auto-termination support as well as support for setting the high byte
termination.  Booting with '-v' will display the settings that the driver
chose.  If you stick narrow devices onto the external wide port, you had
better make sure that your converter cable terminates the bus, you have a
wide device on there that terminates the bus, or you manually set the
termination properly in SCSI-Select instead of using "Automatic".  The
code will get the setting right regardless if you *don't* have internal
wide devices in this type of configuration.  Unfortunatly this is a limitation
of the design of the Adaptec cards.
1997-01-24 22:04:14 +00:00

967 lines
25 KiB
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/*
* Product specific probe and attach routines for:
* 3940, 2940, aic7880, aic7870, aic7860 and aic7850 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. 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.
*
* $FreeBSD$
*/
#if defined(__FreeBSD__)
#include <pci.h>
#endif
#if NPCI > 0 || defined(__NetBSD__)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/queue.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#endif /* defined(__NetBSD__) */
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#if defined(__FreeBSD__)
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <machine/clock.h>
#include <i386/scsi/aic7xxx.h>
#include <i386/scsi/93cx6.h>
#include <dev/aic7xxx/aic7xxx_reg.h>
#define PCI_BASEADR0 PCI_MAP_REG_START /* I/O Address */
#define PCI_BASEADR1 PCI_MAP_REG_START + 4 /* Mem I/O Address */
#elif defined(__NetBSD__)
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/ic/aic7xxxreg.h>
#include <dev/ic/aic7xxxvar.h>
#include <dev/ic/smc93cx6var.h>
#define bootverbose 1
#define PCI_BASEADR0 PCI_MAPREG_START /* I/O Address */
#define PCI_BASEADR1 PCI_MAPREG_START + 4 /* Mem I/O Address */
#endif /* defined(__NetBSD__) */
#define PCI_DEVICE_ID_ADAPTEC_398XU 0x83789004ul
#define PCI_DEVICE_ID_ADAPTEC_3940U 0x82789004ul
#define PCI_DEVICE_ID_ADAPTEC_2944U 0x84789004ul
#define PCI_DEVICE_ID_ADAPTEC_2940U 0x81789004ul
#define PCI_DEVICE_ID_ADAPTEC_2940AU 0x61789004ul
#define PCI_DEVICE_ID_ADAPTEC_398X 0x73789004ul
#define PCI_DEVICE_ID_ADAPTEC_3940 0x72789004ul
#define PCI_DEVICE_ID_ADAPTEC_2944 0x74789004ul
#define PCI_DEVICE_ID_ADAPTEC_2940 0x71789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7880 0x80789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7870 0x70789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7860 0x60789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7855 0x55789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7850 0x50789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7810 0x10789004ul
#define DEVCONFIG 0x40
#define MPORTMODE 0x00000400ul /* aic7870 only */
#define RAMPSM 0x00000200ul /* aic7870 only */
#define VOLSENSE 0x00000100ul
#define SCBRAMSEL 0x00000080ul
#define MRDCEN 0x00000040ul
#define EXTSCBTIME 0x00000020ul /* aic7870 only */
#define EXTSCBPEN 0x00000010ul /* aic7870 only */
#define BERREN 0x00000008ul
#define DACEN 0x00000004ul
#define STPWLEVEL 0x00000002ul
#define DIFACTNEGEN 0x00000001ul /* aic7870 only */
#define CSIZE_LATTIME 0x0c
#define CACHESIZE 0x0000003ful /* only 5 bits */
#define LATTIME 0x0000ff00ul
/*
* Define the format of the aic78X0 SEEPROM registers (16 bits).
*/
struct seeprom_config {
/*
* SCSI ID Configuration Flags
*/
#define CFXFER 0x0007 /* synchronous transfer rate */
#define CFSYNCH 0x0008 /* enable synchronous transfer */
#define CFDISC 0x0010 /* enable disconnection */
#define CFWIDEB 0x0020 /* wide bus device */
/* UNUSED 0x00C0 */
#define CFSTART 0x0100 /* send start unit SCSI command */
#define CFINCBIOS 0x0200 /* include in BIOS scan */
#define CFRNFOUND 0x0400 /* report even if not found */
/* UNUSED 0xf800 */
u_int16_t device_flags[16]; /* words 0-15 */
/*
* BIOS Control Bits
*/
#define CFSUPREM 0x0001 /* support all removeable drives */
#define CFSUPREMB 0x0002 /* support removeable drives for boot only */
#define CFBIOSEN 0x0004 /* BIOS enabled */
/* UNUSED 0x0008 */
#define CFSM2DRV 0x0010 /* support more than two drives */
/* UNUSED 0x0060 */
#define CFEXTEND 0x0080 /* extended translation enabled */
/* UNUSED 0xff00 */
u_int16_t bios_control; /* word 16 */
/*
* Host Adapter Control Bits
*/
#define CFAUTOTERM 0x0001 /* Perform Auto termination */
#define CFULTRAEN 0x0002 /* Ultra SCSI speed enable */
#define CFSTERM 0x0004 /* SCSI low byte termination */
#define CFWSTERM 0x0008 /* SCSI high byte termination */
#define CFSPARITY 0x0010 /* SCSI parity */
/* UNUSED 0x0020 */
#define CFRESETB 0x0040 /* reset SCSI bus at boot */
/* UNUSED 0xff80 */
u_int16_t adapter_control; /* word 17 */
/*
* Bus Release, Host Adapter ID
*/
#define CFSCSIID 0x000f /* host adapter SCSI ID */
/* UNUSED 0x00f0 */
#define CFBRTIME 0xff00 /* bus release time */
u_int16_t brtime_id; /* word 18 */
/*
* Maximum targets
*/
#define CFMAXTARG 0x00ff /* maximum targets */
/* UNUSED 0xff00 */
u_int16_t max_targets; /* word 19 */
u_int16_t res_1[11]; /* words 20-30 */
u_int16_t checksum; /* word 31 */
};
static void load_seeprom __P((struct ahc_softc *ahc, u_int8_t *sxfrctl1));
static int acquire_seeprom __P((struct seeprom_descriptor *sd));
static void release_seeprom __P((struct seeprom_descriptor *sd));
static void write_brdctl __P((struct ahc_softc *ahc, u_int8_t value));
static u_int8_t read_brdctl __P((struct ahc_softc *ahc));
static int aic3940_count;
static int aic398X_count;
static struct ahc_softc *first_398X;
#if defined(__FreeBSD__)
static char* aic7870_probe __P((pcici_t tag, pcidi_t type));
static void aic7870_attach __P((pcici_t config_id, int unit));
static struct pci_device ahc_pci_driver = {
"ahc",
aic7870_probe,
aic7870_attach,
&ahc_unit,
NULL
};
DATA_SET (pcidevice_set, ahc_pci_driver);
static char*
aic7870_probe (pcici_t tag, pcidi_t type)
{
switch (type) {
case PCI_DEVICE_ID_ADAPTEC_398XU:
return ("Adaptec 398X Ultra SCSI RAID adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_3940U:
return ("Adaptec 3940 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_398X:
return ("Adaptec 398X SCSI RAID adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_3940:
return ("Adaptec 3940 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2944U:
return ("Adaptec 2944 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940U:
return ("Adaptec 2940 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2944:
return ("Adaptec 2944 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940:
return ("Adaptec 2940 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940AU:
return ("Adaptec 2940A Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
return ("Adaptec aic7880 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
return ("Adaptec aic7870 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7860:
return ("Adaptec aic7860 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7855:
return ("Adaptec aic7855 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
return ("Adaptec aic7850 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7810:
return ("Adaptec aic7810 RAID memory controller");
break;
default:
break;
}
return (0);
}
#elif defined(__NetBSD__)
int ahc_pci_probe __P((struct device *, void *, void *));
void ahc_pci_attach __P((struct device *, struct device *, void *));
struct cfattach ahc_pci_ca = {
sizeof(struct ahc_softc), ahc_pci_probe, ahc_pci_attach
};
int
ahc_pci_probe(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct pci_attach_args *pa = aux;
switch (pa->pa_id) {
case PCI_DEVICE_ID_ADAPTEC_398XU:
case PCI_DEVICE_ID_ADAPTEC_3940U:
case PCI_DEVICE_ID_ADAPTEC_2944U:
case PCI_DEVICE_ID_ADAPTEC_2940U:
case PCI_DEVICE_ID_ADAPTEC_2940AU:
case PCI_DEVICE_ID_ADAPTEC_398X:
case PCI_DEVICE_ID_ADAPTEC_3940:
case PCI_DEVICE_ID_ADAPTEC_2944:
case PCI_DEVICE_ID_ADAPTEC_2940:
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
case PCI_DEVICE_ID_ADAPTEC_AIC7860:
case PCI_DEVICE_ID_ADAPTEC_AIC7855:
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
case PCI_DEVICE_ID_ADAPTEC_AIC7810:
return 1;
}
return 0;
}
#endif /* defined(__NetBSD__) */
#if defined(__FreeBSD__)
static void
aic7870_attach(config_id, unit)
pcici_t config_id;
int unit;
#elif defined(__NetBSD__)
void
ahc_pci_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
#endif
{
#if defined(__FreeBSD__)
u_int16_t io_port;
struct ahc_softc *ahc;
#elif defined(__NetBSD__)
struct pci_attach_args *pa = aux;
struct ahc_softc *ahc = (void *)self;
int unit = ahc->sc_dev.dv_unit;
bus_io_addr_t iobase;
bus_io_size_t iosize;
bus_io_handle_t ioh;
pci_intr_handle_t ih;
const char *intrstr;
#endif
u_int32_t id;
u_int32_t command;
struct scb_data *shared_scb_data;
int opri;
ahc_type ahc_t = AHC_NONE;
ahc_flag ahc_f = AHC_FNONE;
vm_offset_t vaddr;
vm_offset_t paddr;
u_int8_t ultra_enb = 0;
u_int8_t our_id = 0;
u_int8_t sxfrctl1;
shared_scb_data = NULL;
vaddr = NULL;
paddr = NULL;
#if defined(__FreeBSD__)
io_port = 0;
command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
#ifdef AHC_ALLOW_MEMIO
if ((command & PCI_COMMAND_MEM_ENABLE) == 0
|| (pci_map_mem(config_id, PCI_BASEADR1, &vaddr, &paddr)) == 0)
#endif
if ((command & PCI_COMMAND_IO_ENABLE) == 0
|| (pci_map_port(config_id, PCI_BASEADR0, &io_port)) == 0)
return;
#elif defined(__NetBSD__)
/* XXX Memory mapped I/O?? */
if (bus_io_map(pa->pa_bc, iobase, iosize, &ioh))
if (pci_io_find(pa->pa_pc, pa->pa_tag, PCI_BASEADR0, &iobase,
&iosize))
return;
#endif
#if defined(__FreeBSD__)
switch ((id = pci_conf_read(config_id, PCI_ID_REG))) {
#elif defined(__NetBSD__)
switch (id = pa->pa_id) {
#endif
case PCI_DEVICE_ID_ADAPTEC_398XU:
case PCI_DEVICE_ID_ADAPTEC_398X:
if (id == PCI_DEVICE_ID_ADAPTEC_398XU)
ahc_t = AHC_398U;
else
ahc_t = AHC_398;
switch (aic398X_count) {
case 0:
break;
case 1:
ahc_f |= AHC_CHNLB;
break;
case 2:
ahc_f |= AHC_CHNLC;
break;
default:
break;
}
aic398X_count++;
if (first_398X != NULL)
#ifdef AHC_SHARE_SCBS
shared_scb_data = first_398X->scb_data;
#endif
if (aic398X_count == 3) {
/*
* This is the last device on this RAID
* controller, so reset our counts.
* XXX This won't work for the multiple 3980
* controllers since they have only 2 channels,
* but I'm not even sure if Adaptec actually
* went through with their plans to produce
* this controller.
*/
aic398X_count = 0;
first_398X = NULL;
}
break;
case PCI_DEVICE_ID_ADAPTEC_3940U:
case PCI_DEVICE_ID_ADAPTEC_3940:
if (id == PCI_DEVICE_ID_ADAPTEC_3940U)
ahc_t = AHC_394U;
else
ahc_t = AHC_394;
if ((aic3940_count & 0x01) != 0)
/* Odd count implies second channel */
ahc_f |= AHC_CHNLB;
aic3940_count++;
break;
case PCI_DEVICE_ID_ADAPTEC_2944U:
case PCI_DEVICE_ID_ADAPTEC_2940U:
ahc_t = AHC_294U;
break;
case PCI_DEVICE_ID_ADAPTEC_2944:
case PCI_DEVICE_ID_ADAPTEC_2940:
ahc_t = AHC_294;
break;
case PCI_DEVICE_ID_ADAPTEC_2940AU:
ahc_t = AHC_294AU;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
ahc_t = AHC_AIC7880;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
ahc_t = AHC_AIC7870;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7860:
ahc_t = AHC_AIC7860;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7855:
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
ahc_t = AHC_AIC7850;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7810:
printf("RAID functionality unsupported\n");
return;
default:
break;
}
/* On all PCI adapters, we allow SCB paging */
ahc_f |= AHC_PAGESCBS;
#if defined(__FreeBSD__)
if ((ahc = ahc_alloc(unit, io_port, vaddr, ahc_t, ahc_f,
shared_scb_data)) == NULL)
return; /* XXX PCI code should take return status */
#else
ahc_construct(ahc, pa->pa_bc, ioh, ahc_t, ahc_f);
#endif
/* Remeber how the card was setup in case there is no SEEPROM */
our_id = ahc_inb(ahc, SCSIID) & OID;
if (ahc_t & AHC_ULTRA)
ultra_enb = ahc_inb(ahc, SXFRCTL0) & ULTRAEN;
sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
#if defined(__NetBSD__)
printf("\n");
#endif
ahc_reset(ahc);
#ifdef AHC_SHARE_SCBS
if (ahc_t & AHC_AIC7870) {
#if defined(__FreeBSD__)
u_int32_t devconfig = pci_conf_read(config_id, DEVCONFIG);
#elif defined(__NetBSD__)
u_int32_t devconfig =
pci_conf_read(pa->pa_pc, pa->pa_tag, DEVCONFIG);
#endif
if (devconfig & (RAMPSM)) {
/* XXX Assume 9bit SRAM and enable parity checking */
devconfig |= EXTSCBPEN;
/* XXX Assume fast SRAM and only enable 2 cycle
* access if we are sharing the SRAM across mutiple
* adapters (398X adapter).
*/
if ((devconfig & MPORTMODE) == 0)
/* Multi-user mode */
devconfig |= EXTSCBTIME;
devconfig &= ~SCBRAMSEL;
#if defined(__FreeBSD__)
pci_conf_write(config_id, DEVCONFIG, devconfig);
#elif defined(__NetBSD__)
pci_conf_write(pa->pa_pc, pa->pa_tag,
DEVCONFIG, devconfig);
#endif
}
}
#endif
#if defined(__FreeBSD__)
if (!(pci_map_int(config_id, ahc_intr, (void *)ahc, &bio_imask))) {
ahc_free(ahc);
return;
}
#elif defined(__NetBSD__)
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
printf("%s: couldn't map interrupt\n", ahc->sc_dev.dv_xname);
ahc_free(ahc);
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
#ifdef __OpenBSD__
ahc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahc_intr, ahc,
ahc->sc_dev.dv_xname);
#else
ahc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahc_intr, ahc);
#endif
if (ahc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt",
ahc->sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
ahc_free(ahc);
return;
}
if (intrstr != NULL)
printf("%s: interrupting at %s\n", ahc->sc_dev.dv_xname,
intrstr);
#endif
/*
* Protect ourself from spurrious interrupts during
* intialization.
*/
opri = splbio();
/*
* Do aic7880/aic7870/aic7860/aic7850 specific initialization
*/
{
u_int8_t sblkctl;
char *id_string;
switch(ahc->type) {
case AHC_398U:
case AHC_394U:
case AHC_294U:
case AHC_AIC7880:
id_string = "aic7880 ";
load_seeprom(ahc, &sxfrctl1);
break;
case AHC_398:
case AHC_394:
case AHC_294:
case AHC_AIC7870:
id_string = "aic7870 ";
load_seeprom(ahc, &sxfrctl1);
break;
case AHC_294AU:
case AHC_AIC7860:
id_string = "aic7860 ";
load_seeprom(ahc, &sxfrctl1);
break;
case AHC_AIC7850:
id_string = "aic7850 ";
/*
* Use defaults, if the chip wasn't initialized by
* a BIOS.
*/
ahc->flags |= AHC_USEDEFAULTS;
break;
default:
printf("ahc: Unknown controller type. Ignoring.\n");
ahc_free(ahc);
splx(opri);
return;
}
/*
* Take the LED out of diagnostic mode
*/
sblkctl = ahc_inb(ahc, SBLKCTL);
ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
/*
* I don't know where this is set in the SEEPROM or by the
* BIOS, so we default to 100%.
*/
ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
if (ahc->flags & AHC_USEDEFAULTS) {
/*
* PCI Adapter default setup
* Should only be used if the adapter does not have
* an SEEPROM.
*/
/* See if someone else set us up already */
u_int32_t i;
for (i = TARG_SCRATCH; i < 0x60; i++) {
if (ahc_inb(ahc, i) != 0x00)
break;
}
if (i == TARG_SCRATCH) {
/*
* Try looking for all ones. You can get
* either.
*/
for (i = TARG_SCRATCH; i < 0x60; i++) {
if (ahc_inb(ahc, i) != 0xff)
break;
}
}
if ((i != 0x60) && (our_id != 0)) {
printf("%s: Using left over BIOS settings\n",
ahc_name(ahc));
ahc->flags &= ~AHC_USEDEFAULTS;
} else {
/*
* Assume only one connector and always turn
* on termination.
*/
our_id = 0x07;
sxfrctl1 = STPWEN;
}
ahc_outb(ahc, SCSICONF,
(our_id & 0x07)|ENSPCHK|RESET_SCSI);
/* In case we are a wide card */
ahc_outb(ahc, SCSICONF + 1, our_id);
if (ultra_enb == 0
&& (ahc->flags & AHC_USEDEFAULTS) == 0) {
/*
* If there wasn't a BIOS or the board
* wasn't in this mode to begin with,
* turn off ultra.
*/
ahc->type &= ~AHC_ULTRA;
}
}
printf("%s: %s", ahc_name(ahc), id_string);
}
if (ahc_init(ahc)){
ahc_free(ahc);
splx(opri);
return; /* XXX PCI code should take return status */
}
/*
* Put our termination setting into sxfrctl1 now that the
* generic initialization is complete.
*/
sxfrctl1 |= ahc_inb(ahc, SXFRCTL1);
ahc_outb(ahc, SXFRCTL1, sxfrctl1);
if ((ahc->type & AHC_398) == AHC_398) {
/* Only set this once we've successfully probed */
if (shared_scb_data == NULL)
first_398X = ahc;
}
splx(opri);
ahc_attach(ahc);
}
/*
* Read the SEEPROM. Return 0 on failure
*/
void
load_seeprom(ahc, sxfrctl1)
struct ahc_softc *ahc;
u_int8_t *sxfrctl1;
{
struct seeprom_descriptor sd;
struct seeprom_config sc;
u_int16_t *scarray = (u_int16_t *)&sc;
u_int16_t checksum = 0;
u_int8_t scsi_conf;
u_int8_t host_id;
int have_seeprom;
#if defined(__FreeBSD__)
sd.sd_maddr = ahc->maddr;
if (sd.sd_maddr != NULL)
sd.sd_maddr += SEECTL;
sd.sd_iobase = ahc->baseport;
if (sd.sd_iobase != 0)
sd.sd_iobase += SEECTL;
#elif defined(__NetBSD__)
sd.sd_bc = ahc->sc_bc;
sd.sd_ioh = ahc->sc_ioh;
sd.sd_offset = SEECTL;
#endif
if ((ahc->type & AHC_398) == AHC_398)
sd.sd_chip = C56_66;
else
sd.sd_chip = C46;
sd.sd_MS = SEEMS;
sd.sd_RDY = SEERDY;
sd.sd_CS = SEECS;
sd.sd_CK = SEECK;
sd.sd_DO = SEEDO;
sd.sd_DI = SEEDI;
if (bootverbose)
printf("%s: Reading SEEPROM...", ahc_name(ahc));
have_seeprom = acquire_seeprom(&sd);
if (have_seeprom) {
have_seeprom = read_seeprom(&sd,
(u_int16_t *)&sc,
ahc->flags & (AHC_CHNLB|AHC_CHNLC),
sizeof(sc)/2);
release_seeprom(&sd);
if (have_seeprom) {
/* Check checksum */
int i;
int maxaddr = (sizeof(sc)/2) - 1;
for (i = 0; i < maxaddr; i++)
checksum = checksum + scarray[i];
if (checksum != sc.checksum) {
if(bootverbose)
printf ("checksum error");
have_seeprom = 0;
} else if (bootverbose)
printf("done.\n");
}
}
if (!have_seeprom) {
if (bootverbose)
printf("\n%s: No SEEPROM availible\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 = sc.max_targets & CFMAXTARG;
for (i = 0; i < max_targ; i++){
u_char 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_SCRATCH+i, target_settings);
}
ahc_outb(ahc, DISC_DSB, ~(ahc->discenable & 0xff));
ahc_outb(ahc, DISC_DSB + 1, ~((ahc->discenable >> 8) & 0xff));
host_id = sc.brtime_id & CFSCSIID;
scsi_conf = (host_id & 0x7);
if (sc.adapter_control & CFSPARITY)
scsi_conf |= ENSPCHK;
if (sc.adapter_control & CFRESETB)
scsi_conf |= RESET_SCSI;
/*
* Update the settings in sxfrctl1 to match the
*termination settings
*/
*sxfrctl1 = 0;
if (sc.adapter_control & CFAUTOTERM) {
/* Play around with the memory port */
have_seeprom = acquire_seeprom(&sd);
if (have_seeprom) {
u_int8_t brdctl;
u_int8_t seectl;
int internal50_present;
int internal68_present;
int external68_present;
int eprom_present;
int high_on;
int low_on;
seectl = sd.sd_CS|sd.sd_MS;
SEEPROM_OUTB(&sd, seectl);
/*
* First read the status of our cables.
* Set the rom bank to 0 since the
* bank setting serves as a multiplexor
* for the cable detection logic.
* BRDDAT5 controls the bank switch.
*/
write_brdctl(ahc, 0);
/*
* Now read the state of the internal
* connectors. BRDDAT6 is INT50 and
* BRDDAT7 is INT68.
*/
brdctl = read_brdctl(ahc);
internal50_present = !(brdctl & BRDDAT6);
internal68_present = !(brdctl & BRDDAT7);
if (bootverbose) {
printf("internal50 cable %s present\n"
"internal68 cable %s present\n"
"brdctl == 0x%x\n",
internal50_present ? "is":"not",
internal68_present ? "is":"not",
brdctl);
}
/*
* Set the rom bank to 1 and determine
* the other signals.
*/
write_brdctl(ahc, BRDDAT5);
/*
* Now read the state of the external
* connectors. BRDDAT6 is EXT68 and
* BRDDAT7 is EPROMPS.
*/
brdctl = read_brdctl(ahc);
external68_present = !(brdctl & BRDDAT6);
eprom_present = brdctl & BRDDAT7;
if (bootverbose) {
printf("external68 %s present\n"
"eprom %s present\n"
"brdctl == 0x%x\n",
external68_present ? "is":"not",
eprom_present ? "is" : "not",
brdctl);
}
/*
* Now set the termination based on what
* we found. BRDDAT6 controls wide
* termination enable.
*/
high_on = FALSE;
low_on = FALSE;
if ((external68_present == 0)
|| (internal68_present == 0))
high_on = TRUE;
if (((internal50_present ? 1 : 0)
+ (internal68_present ? 1 : 0)
+ (external68_present ? 1 : 0)) <= 1)
low_on = TRUE;
if ((internal50_present != 0)
&& (internal68_present != 0)
&& (external68_present != 0)) {
printf("Illegal cable configuration!!. "
"Only two connectors on the "
"adapter may be used at a "
"time!");
}
if (high_on == TRUE)
write_brdctl(ahc, BRDDAT6);
else
write_brdctl(ahc, 0);
if (low_on == TRUE)
*sxfrctl1 |= STPWEN;
if (bootverbose) {
printf("low byte termination %s, "
"high byte termination %s\n",
low_on ? "enabled":"disabled",
high_on ? "enabled":"disabled");
}
}
release_seeprom(&sd);
} else {
if (sc.adapter_control & CFSTERM)
*sxfrctl1 |= STPWEN;
have_seeprom = acquire_seeprom(&sd);
if (have_seeprom) {
SEEPROM_OUTB(&sd, sd.sd_CS|sd.sd_MS);
if (sc.adapter_control & CFWSTERM)
write_brdctl(ahc, BRDDAT6);
else
write_brdctl(ahc, 0);
release_seeprom(&sd);
} else
printf("Unabled to configure high byte "
"termination!\n");
if (bootverbose) {
printf("low byte termination %s, "
"high byte termination %s\n",
sc.adapter_control & CFSTERM ?
"enabled":"disabled",
sc.adapter_control & CFWSTERM ?
"enabled":"disabled");
}
}
if (ahc->type & AHC_ULTRA) {
/* Should we enable Ultra mode? */
if (!(sc.adapter_control & CFULTRAEN))
/* Treat us as a non-ultra card */
ahc->type &= ~AHC_ULTRA;
}
/* Set the host ID */
ahc_outb(ahc, SCSICONF, scsi_conf);
/* In case we are a wide card */
ahc_outb(ahc, SCSICONF + 1, host_id);
}
}
static int
acquire_seeprom(sd)
struct seeprom_descriptor *sd;
{
int wait;
/*
* Request access of the memory port. When access is
* granted, SEERDY will go high. We use a 1 second
* timeout which should be near 1 second more than
* is needed. Reason: after the chip reset, there
* should be no contention.
*/
SEEPROM_OUTB(sd, sd->sd_MS);
wait = 1000; /* 1 second timeout in msec */
while (--wait && ((SEEPROM_INB(sd) & sd->sd_RDY) == 0)) {
DELAY (1000); /* delay 1 msec */
}
if ((SEEPROM_INB(sd) & sd->sd_RDY) == 0) {
SEEPROM_OUTB(sd, 0);
return (0);
}
return(1);
}
static void
release_seeprom(sd)
struct seeprom_descriptor *sd;
{
/* Release access to the memory port and the serial EEPROM. */
SEEPROM_OUTB(sd, 0);
}
static void
write_brdctl(ahc, value)
struct ahc_softc *ahc;
u_int8_t value;
{
u_int8_t brdctl;
brdctl = BRDCS|BRDSTB;
ahc_outb(ahc, BRDCTL, brdctl);
brdctl |= value;
ahc_outb(ahc, BRDCTL, brdctl);
brdctl &= ~BRDSTB;
ahc_outb(ahc, BRDCTL, brdctl);
brdctl &= ~BRDCS;
ahc_outb(ahc, BRDCTL, brdctl);
}
static u_int8_t
read_brdctl(ahc)
struct ahc_softc *ahc;
{
ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
return ahc_inb(ahc, BRDCTL);
}
#endif /* NPCI > 0 */
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