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freebsd-nq/sys/pci/ahc_pci.c
Justin T. Gibbs 957fea92f0 Set the ultra enable bits in the adaptor's scratch ram area only after 
we finish modifying our in kernel version during seeprom configuration.
1999-02-11 07:12:16 +00:00

1210 lines
31 KiB
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/*
* Product specific probe and attach routines for:
* 3940, 2940, aic7895, aic7890, aic7880,
* aic7870, aic7860 and aic7850 SCSI controllers
*
* Copyright (c) 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, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Where this Software is combined with software released under the terms of
* the GNU Public License ("GPL") and the terms of the GPL would require the
* combined work to also be released under the terms of the GPL, the terms
* and conditions of this License will apply in addition to those of the
* GPL with the exception of any terms or conditions of this License that
* conflict with, or are expressly prohibited by, the GPL.
*
* 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_pci.c,v 1.5 1998/12/15 08:23:10 gibbs Exp $
*/
#include <pci.h>
#if NPCI > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/queue.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/clock.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 PCI_BASEADR0 PCI_MAP_REG_START /* I/O Address */
#define PCI_BASEADR1 PCI_MAP_REG_START + 4 /* Mem I/O Address */
#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_2940U2 0x00109005ul
#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_AIC7890 0x001F9005ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7895 0x78959004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7896 0x005F9005ul
#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 AHC_394X_SLOT_CHANNEL_A 4
#define AHC_394X_SLOT_CHANNEL_B 5
#define AHC_398X_SLOT_CHANNEL_A 4
#define AHC_398X_SLOT_CHANNEL_B 8
#define AHC_398X_SLOT_CHANNEL_C 12
#define DEVCONFIG 0x40
#define SCBSIZE32 0x00010000ul /* aic789X only */
#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
static void check_extport(struct ahc_softc *ahc, u_int8_t *sxfrctl1);
static void configure_termination(struct ahc_softc *ahc,
struct seeprom_config *sc,
struct seeprom_descriptor *sd,
u_int8_t *sxfrctl1);
static void ahc_ultra2_term_detect(struct ahc_softc *ahc,
int *enableSEC_low,
int *enableSEC_high,
int *enablePRI_low,
int *enablePRI_high,
int *eeprom_present);
static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *internal68_present,
int *externalcable_present,
int *eeprom_present);
static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *externalcable_present,
int *eeprom_present);
static int acquire_seeprom(struct ahc_softc *ahc,
struct seeprom_descriptor *sd);
static void release_seeprom(struct seeprom_descriptor *sd);
static void write_brdctl(struct ahc_softc *ahc, u_int8_t value);
static u_int8_t read_brdctl(struct ahc_softc *ahc);
static struct ahc_softc *first_398X;
static const char* ahc_pci_probe(pcici_t tag, pcidi_t type);
static void ahc_pci_attach(pcici_t config_id, int unit);
/* Exported for use in the ahc_intr routine */
void ahc_pci_intr(struct ahc_softc *ahc);
static struct pci_device ahc_pci_driver = {
"ahc",
ahc_pci_probe,
ahc_pci_attach,
&ahc_unit,
NULL
};
DATA_SET (pcidevice_set, ahc_pci_driver);
static const char*
ahc_pci_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 adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2944U:
return ("Adaptec 2944 Ultra SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940U:
return ("Adaptec 2940 Ultra SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940U2:
return ("Adaptec 2940 Ultra2 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2944:
return ("Adaptec 2944 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940:
return ("Adaptec 2940 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940AU:
return ("Adaptec 2940A Ultra SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7895:
return ("Adaptec aic7895 Ultra SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7890:
return ("Adaptec aic7890/91 Ultra2 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7896:
return ("Adaptec aic7896/97 Ultra2 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
return ("Adaptec aic7880 Ultra SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
return ("Adaptec aic7870 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7860:
return ("Adaptec aic7860 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7855:
return ("Adaptec aic7855 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
return ("Adaptec aic7850 SCSI adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7810:
return ("Adaptec aic7810 RAID memory controller");
break;
default:
break;
}
return (0);
}
static void
ahc_pci_attach(pcici_t config_id, int unit)
{
pci_port_t io_port;
struct ahc_softc *ahc;
u_int32_t id;
u_int32_t command;
struct scb_data *shared_scb_data;
int opri;
ahc_chip ahc_t = AHC_NONE;
ahc_feature ahc_fe = AHC_FENONE;
ahc_flag ahc_f = AHC_FNONE;
vm_offset_t vaddr;
vm_offset_t paddr;
u_int our_id = 0;
u_int sxfrctl1;
u_int scsiseq;
int error;
char channel;
if (config_id->func == 1)
channel = 'B';
else
channel = 'A';
shared_scb_data = NULL;
vaddr = NULL;
paddr = NULL;
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;
switch ((id = pci_conf_read(config_id, PCI_ID_REG))) {
case PCI_DEVICE_ID_ADAPTEC_398XU:
case PCI_DEVICE_ID_ADAPTEC_398X:
if (id == PCI_DEVICE_ID_ADAPTEC_398XU) {
ahc_t = AHC_AIC7880;
ahc_fe = AHC_AIC7880_FE;
} else {
ahc_t = AHC_AIC7870;
ahc_fe = AHC_AIC7870_FE;
}
switch (config_id->slot) {
case AHC_398X_SLOT_CHANNEL_A:
break;
case AHC_398X_SLOT_CHANNEL_B:
channel = 'B';
break;
case AHC_398X_SLOT_CHANNEL_C:
channel = 'C';
break;
default:
printf("adapter at unexpected slot %d\n"
"unable to map to a channel\n",
config_id->slot);
}
ahc_f |= AHC_LARGE_SEEPROM;
break;
case PCI_DEVICE_ID_ADAPTEC_3940U:
case PCI_DEVICE_ID_ADAPTEC_3940:
if (id == PCI_DEVICE_ID_ADAPTEC_3940U) {
ahc_t = AHC_AIC7880;
ahc_fe = AHC_AIC7880_FE;
} else {
ahc_t = AHC_AIC7870;
ahc_fe = AHC_AIC7870_FE;
}
switch (config_id->slot) {
case AHC_394X_SLOT_CHANNEL_A:
break;
case AHC_394X_SLOT_CHANNEL_B:
channel = 'B';
break;
default:
printf("adapter at unexpected slot %d\n"
"unable to map to a channel\n",
config_id->slot);
}
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7890:
case PCI_DEVICE_ID_ADAPTEC_2940U2:
{
ahc_t = AHC_AIC7890;
ahc_fe = AHC_AIC7890_FE;
break;
}
case PCI_DEVICE_ID_ADAPTEC_AIC7896:
{
ahc_t = AHC_AIC7896;
ahc_fe = AHC_AIC7896_FE;
break;
}
case PCI_DEVICE_ID_ADAPTEC_2944U:
case PCI_DEVICE_ID_ADAPTEC_2940U:
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
ahc_t = AHC_AIC7880;
ahc_fe = AHC_AIC7880_FE;
break;
case PCI_DEVICE_ID_ADAPTEC_2944:
case PCI_DEVICE_ID_ADAPTEC_2940:
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
ahc_t = AHC_AIC7870;
ahc_fe = AHC_AIC7870_FE;
break;
case PCI_DEVICE_ID_ADAPTEC_2940AU:
case PCI_DEVICE_ID_ADAPTEC_AIC7860:
ahc_fe = AHC_AIC7860_FE;
ahc_t = AHC_AIC7860;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7895:
{
u_int32_t devconfig;
ahc_t = AHC_AIC7895;
ahc_fe = AHC_AIC7895_FE;
devconfig = pci_conf_read(config_id, DEVCONFIG);
devconfig &= ~SCBSIZE32;
pci_conf_write(config_id, DEVCONFIG, devconfig);
break;
}
case PCI_DEVICE_ID_ADAPTEC_AIC7855:
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
ahc_t = AHC_AIC7850;
ahc_fe = AHC_AIC7850_FE;
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 ((ahc = ahc_alloc(unit, io_port, vaddr, ahc_t|AHC_PCI, ahc_fe, ahc_f,
shared_scb_data)) == NULL)
return; /* XXX PCI code should take return status */
ahc->channel = channel;
/* Allocate a dmatag for our SCB DMA maps */
/* XXX Should be a child of the PCI 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;
}
/* Store our PCI bus information for use in our PCI error handler */
ahc->pci_config_id = config_id;
/* Remeber how the card was setup in case there is no SEEPROM */
ahc_outb(ahc, HCNTRL, ahc->pause);
if ((ahc->features & AHC_ULTRA2) != 0)
our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
else
our_id = ahc_inb(ahc, SCSIID) & OID;
sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
scsiseq = ahc_inb(ahc, SCSISEQ);
if (ahc_reset(ahc) != 0) {
/* Failed */
ahc_free(ahc);
return;
}
/*
* Take a look to see if we have external SRAM.
* We currently do not attempt to use SRAM that is
* shared among multiple controllers.
*/
if ((ahc->features & AHC_ULTRA2) != 0) {
u_int dscommand0;
dscommand0 = ahc_inb(ahc, DSCOMMAND0);
if ((dscommand0 & RAMPS) != 0) {
u_int32_t devconfig;
devconfig = pci_conf_read(config_id, DEVCONFIG);
if ((devconfig & MPORTMODE) != 0) {
/* Single user mode */
/*
* XXX Assume 9bit SRAM and enable
* parity checking
*/
devconfig |= EXTSCBPEN;
pci_conf_write(config_id, DEVCONFIG, devconfig);
/*
* Set the bank select apropriately.
*/
if (ahc->channel == 'B')
ahc_outb(ahc, SCBBADDR, 1);
else
ahc_outb(ahc, SCBBADDR, 0);
/* Select external SCB SRAM */
dscommand0 &= ~INTSCBRAMSEL;
ahc_outb(ahc, DSCOMMAND0, dscommand0);
if (ahc_probe_scbs(ahc) == 0) {
/* External ram isn't really there */
dscommand0 |= INTSCBRAMSEL;
ahc_outb(ahc, DSCOMMAND0, dscommand0);
} else if (bootverbose)
printf("%s: External SRAM bank%d\n",
ahc_name(ahc),
ahc->channel == 'B' ? 1 : 0);
}
}
} else if ((ahc->chip & AHC_CHIPID_MASK) >= AHC_AIC7870) {
u_int32_t devconfig = pci_conf_read(config_id, DEVCONFIG);
if ((devconfig & RAMPSM) != 0
&& (devconfig & MPORTMODE) != 0) {
/* XXX Assume 9bit SRAM and enable parity checking */
devconfig |= EXTSCBPEN;
/* XXX Assume fast SRAM */
devconfig &= ~EXTSCBTIME;
/*
* Set the bank select apropriately.
*/
if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
if (ahc->channel == 'B')
ahc_outb(ahc, SCBBADDR, 1);
else
ahc_outb(ahc, SCBBADDR, 0);
}
/* Select external SRAM */
devconfig &= ~SCBRAMSEL;
pci_conf_write(config_id, DEVCONFIG, devconfig);
if (ahc_probe_scbs(ahc) == 0) {
/* External ram isn't really there */
devconfig |= SCBRAMSEL;
pci_conf_write(config_id, DEVCONFIG, devconfig);
} else if (bootverbose)
printf("%s: External SRAM bank%d\n",
ahc_name(ahc),
ahc->channel == 'B' ? 1 : 0);
}
}
if (!(pci_map_int(config_id, ahc_intr, (void *)ahc, &cam_imask))) {
ahc_free(ahc);
return;
}
/*
* Protect ourself from spurrious interrupts during
* intialization.
*/
opri = splcam();
/*
* Do aic7880/aic7870/aic7860/aic7850 specific initialization
*/
{
u_int8_t sblkctl;
char *id_string;
switch(ahc_t) {
case AHC_AIC7896:
{
u_int dscommand0;
/*
* DPARCKEN doesn't work correctly on
* some MBs so don't use it.
*/
id_string = "aic7896/97 ";
dscommand0 = ahc_inb(ahc, DSCOMMAND0);
dscommand0 &= ~(USCBSIZE32|DPARCKEN);
dscommand0 |= CACHETHEN|MPARCKEN;
ahc_outb(ahc, DSCOMMAND0, dscommand0);
break;
}
case AHC_AIC7890:
{
u_int dscommand0;
/*
* DPARCKEN doesn't work correctly on
* some MBs so don't use it.
*/
id_string = "aic7890/91 ";
dscommand0 = ahc_inb(ahc, DSCOMMAND0);
dscommand0 &= ~(USCBSIZE32|DPARCKEN);
dscommand0 |= CACHETHEN|MPARCKEN;
ahc_outb(ahc, DSCOMMAND0, dscommand0);
break;
}
case AHC_AIC7895:
id_string = "aic7895 ";
break;
case AHC_AIC7880:
id_string = "aic7880 ";
break;
case AHC_AIC7870:
id_string = "aic7870 ";
break;
case AHC_AIC7860:
id_string = "aic7860 ";
break;
case AHC_AIC7850:
id_string = "aic7850 ";
break;
default:
printf("ahc: Unknown controller type. Ignoring.\n");
ahc_free(ahc);
splx(opri);
return;
}
/* See if we have an SEEPROM and perform auto-term */
check_extport(ahc, &sxfrctl1);
/*
* 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% on Ultra or slower controllers
* and 75% on ULTRA2 controllers.
*/
if ((ahc->features & AHC_ULTRA2) != 0) {
ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75);
} else {
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 */
if (scsiseq != 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);
ahc->our_id = our_id;
}
printf("%s: %s", ahc_name(ahc), id_string);
}
/*
* Record our termination setting for the
* generic initialization routine.
*/
if ((sxfrctl1 & STPWEN) != 0)
ahc->flags |= AHC_TERM_ENB_A;
if (ahc_init(ahc)) {
ahc_free(ahc);
splx(opri);
return; /* XXX PCI code should take return status */
}
/* XXX Crude hack - fix sometime */
if (ahc->flags & AHC_SHARED_SRAM) {
/* Only set this once we've successfully probed */
if (shared_scb_data == NULL)
first_398X = ahc;
}
splx(opri);
ahc_attach(ahc);
}
/*
* Check the external port logic for a serial eeprom
* and termination/cable detection contrls.
*/
static void
check_extport(struct ahc_softc *ahc, u_int8_t *sxfrctl1)
{
struct seeprom_descriptor sd;
struct seeprom_config sc;
u_int8_t scsi_conf;
int have_seeprom;
sd.sd_tag = ahc->tag;
sd.sd_bsh = ahc->bsh;
sd.sd_control_offset = SEECTL;
sd.sd_status_offset = SEECTL;
sd.sd_dataout_offset = SEECTL;
/*
* For some multi-channel devices, the c46 is simply too
* small to work. For the other controller types, we can
* get our information from either SEEPROM type. Set the
* type to start our probe with accordingly.
*/
if (ahc->flags & AHC_LARGE_SEEPROM)
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;
have_seeprom = acquire_seeprom(ahc, &sd);
if (have_seeprom) {
if (bootverbose)
printf("%s: Reading SEEPROM...", ahc_name(ahc));
for (;;) {
bus_size_t start_addr;
start_addr = 32 * (ahc->channel - 'A');
have_seeprom = read_seeprom(&sd, (u_int16_t *)&sc,
start_addr, sizeof(sc)/2);
if (have_seeprom) {
/* Check checksum */
int i;
int maxaddr;
u_int16_t *scarray;
u_int16_t checksum;
maxaddr = (sizeof(sc)/2) - 1;
checksum = 0;
scarray = (u_int16_t *)&sc;
for (i = 0; i < maxaddr; i++)
checksum = checksum + scarray[i];
if (checksum == 0 || checksum != sc.checksum) {
if (bootverbose && sd.sd_chip == C56_66)
printf ("checksum error\n");
have_seeprom = 0;
} else {
if (bootverbose)
printf("done.\n");
break;
}
}
if (sd.sd_chip == C56_66)
break;
sd.sd_chip = C56_66;
}
}
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 = sc.max_targets & CFMAXTARG;
if ((sc.adapter_control & CFULTRAEN) != 0) {
/*
* Determine if this adapter has a "newstyle"
* SEEPROM format.
*/
for (i = 0; i < max_targ; i++) {
if ((sc.device_flags[i] & CFSYNCHISULTRA) != 0){
ahc->flags |= AHC_NEWEEPROM_FMT;
break;
}
}
}
for (i = 0; i < max_targ; i++) {
u_int scsirate;
u_int16_t target_mask;
target_mask = 0x01 << i;
if (sc.device_flags[i] & CFDISC)
ahc->discenable |= target_mask;
if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
if ((sc.device_flags[i] & CFSYNCHISULTRA) != 0)
ahc->ultraenb |= target_mask;
} else if ((sc.adapter_control & CFULTRAEN) != 0) {
ahc->ultraenb |= target_mask;
}
if ((sc.device_flags[i] & CFXFER) == 0x04
&& (ahc->ultraenb & target_mask) != 0) {
/* Treat 10MHz as a non-ultra speed */
sc.device_flags[i] &= ~CFXFER;
ahc->ultraenb &= ~target_mask;
}
if ((ahc->features & AHC_ULTRA2) != 0) {
u_int offset;
if (sc.device_flags[i] & CFSYNCH)
offset = MAX_OFFSET_ULTRA2;
else
offset = 0;
ahc_outb(ahc, TARG_OFFSET + i, offset);
scsirate = (sc.device_flags[i] & CFXFER)
| ((ahc->ultraenb & target_mask)
? 0x18 : 0x10);
if (sc.device_flags[i] & CFWIDEB)
scsirate |= WIDEXFER;
} else {
scsirate = (sc.device_flags[i] & CFXFER) << 4;
if (sc.device_flags[i] & CFSYNCH)
scsirate |= SOFS;
if (sc.device_flags[i] & CFWIDEB)
scsirate |= WIDEXFER;
}
ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
}
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 & CFEXTEND)
ahc->flags |= AHC_EXTENDED_TRANS_A;
if (ahc->features & AHC_ULTRA
&& (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
/* Should we enable Ultra mode? */
if (!(sc.adapter_control & CFULTRAEN))
/* Treat us as a non-ultra card */
ahc->ultraenb = 0;
}
/* Set SCSICONF info */
ahc_outb(ahc, SCSICONF, scsi_conf);
ahc_outb(ahc, DISC_DSB, ~(ahc->discenable & 0xff));
ahc_outb(ahc, DISC_DSB + 1, ~((ahc->discenable >> 8) & 0xff));
ahc_outb(ahc, ULTRA_ENB, ahc->ultraenb & 0xff);
ahc_outb(ahc, ULTRA_ENB + 1, (ahc->ultraenb >> 8) & 0xff);
}
if ((ahc->features & AHC_SPIOCAP) != 0) {
if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) != 0) {
configure_termination(ahc, &sc, &sd, sxfrctl1);
}
} else if (have_seeprom) {
configure_termination(ahc, &sc, &sd, sxfrctl1);
}
release_seeprom(&sd);
}
static void
configure_termination(struct ahc_softc *ahc,
struct seeprom_config *sc,
struct seeprom_descriptor *sd,
u_int8_t *sxfrctl1)
{
int max_targ = sc->max_targets & CFMAXTARG;
u_int8_t brddat;
brddat = 0;
/*
* Update the settings in sxfrctl1 to match the
*termination settings
*/
*sxfrctl1 = 0;
/*
* SEECS must be on for the GALS to latch
* the data properly. Be sure to leave MS
* on or we will release the seeprom.
*/
SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
if ((sc->adapter_control & CFAUTOTERM) != 0
|| (ahc->features & AHC_ULTRA2) != 0) {
int internal50_present;
int internal68_present;
int externalcable_present;
int eeprom_present;
int enableSEC_low;
int enableSEC_high;
int enablePRI_low;
int enablePRI_high;
enableSEC_low = 0;
enableSEC_high = 0;
enablePRI_low = 0;
enablePRI_high = 0;
if (ahc->features & AHC_ULTRA2) {
ahc_ultra2_term_detect(ahc, &enableSEC_low,
&enableSEC_high,
&enablePRI_low,
&enablePRI_high,
&eeprom_present);
if ((sc->adapter_control & CFSEAUTOTERM) == 0) {
enableSEC_low = (sc->adapter_control & CFSTERM);
enableSEC_high =
(sc->adapter_control & CFWSTERM);
}
if ((sc->adapter_control & CFAUTOTERM) == 0) {
enablePRI_low = enablePRI_high =
(sc->adapter_control & CFLVDSTERM);
}
/* Make the table calculations below happy */
internal50_present = 0;
internal68_present = 1;
externalcable_present = 1;
} else if ((ahc->features & AHC_SPIOCAP) != 0) {
aic785X_cable_detect(ahc, &internal50_present,
&externalcable_present,
&eeprom_present);
} else {
aic787X_cable_detect(ahc, &internal50_present,
&internal68_present,
&externalcable_present,
&eeprom_present);
}
if (max_targ <= 8) {
internal68_present = 0;
}
if (bootverbose) {
if ((ahc->features & AHC_ULTRA2) == 0) {
printf("%s: internal 50 cable %s present, "
"internal 68 cable %s present\n",
ahc_name(ahc),
internal50_present ? "is":"not",
internal68_present ? "is":"not");
printf("%s: external cable %s present\n",
ahc_name(ahc),
externalcable_present ? "is":"not");
}
printf("%s: BIOS eeprom %s present\n",
ahc_name(ahc), eeprom_present ? "is" : "not");
}
/*
* Now set the termination based on what
* we found.
* Flash Enable = BRDDAT7
* Secondary High Term Enable = BRDDAT6
* Secondary Low Term Enable = BRDDAT5 (7890)
* Primary High Term Enable = BRDDAT4 (7890)
*/
if ((ahc->features & AHC_ULTRA2) == 0
&& (internal50_present != 0)
&& (internal68_present != 0)
&& (externalcable_present != 0)) {
printf("%s: Illegal cable configuration!!. "
"Only two connectors on the "
"adapter may be used at a "
"time!\n", ahc_name(ahc));
}
if ((max_targ > 8)
&& ((externalcable_present == 0)
|| (internal68_present == 0)
|| (enableSEC_high != 0))) {
brddat |= BRDDAT6;
if (bootverbose)
printf("%s: %sHigh byte termination Enabled\n",
ahc_name(ahc),
enableSEC_high ? "Secondary " : "");
}
if (((internal50_present ? 1 : 0)
+ (internal68_present ? 1 : 0)
+ (externalcable_present ? 1 : 0)) <= 1
|| (enableSEC_low != 0)) {
if ((ahc->features & AHC_ULTRA2) != 0)
brddat |= BRDDAT5;
else
*sxfrctl1 |= STPWEN;
if (bootverbose)
printf("%s: %sLow byte termination Enabled\n",
ahc_name(ahc),
enableSEC_low ? "Secondary " : "");
}
if (enablePRI_low != 0) {
*sxfrctl1 |= STPWEN;
if (bootverbose)
printf("%s: Primary Low Byte termination "
"Enabled\n", ahc_name(ahc));
}
if (enablePRI_high != 0) {
brddat |= BRDDAT4;
if (bootverbose)
printf("%s: Primary High Byte "
"termination Enabled\n",
ahc_name(ahc));
}
write_brdctl(ahc, brddat);
} else {
if (sc->adapter_control & CFSTERM) {
if ((ahc->features & AHC_ULTRA2) != 0)
brddat |= BRDDAT5;
else
*sxfrctl1 |= STPWEN;
if (bootverbose)
printf("%s: %sLow byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2) ? "Primary "
: "");
}
if (sc->adapter_control & CFWSTERM) {
brddat |= BRDDAT6;
if (bootverbose)
printf("%s: %sHigh byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2)
? "Secondary " : "");
}
write_brdctl(ahc, brddat);
}
SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
}
static void
ahc_ultra2_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
int *enableSEC_high, int *enablePRI_low,
int *enablePRI_high, int *eeprom_present)
{
u_int8_t brdctl;
/*
* BRDDAT7 = Eeprom
* BRDDAT6 = Enable Secondary High Byte termination
* BRDDAT5 = Enable Secondary Low Byte termination
* BRDDAT4 = Enable Primary low byte termination
* BRDDAT3 = Enable Primary high byte termination
*/
brdctl = read_brdctl(ahc);
*eeprom_present = brdctl & BRDDAT7;
*enableSEC_high = (brdctl & BRDDAT6);
*enableSEC_low = (brdctl & BRDDAT5);
*enablePRI_low = (brdctl & BRDDAT4);
*enablePRI_high = (brdctl & BRDDAT3);
}
static void
aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *internal68_present, int *externalcable_present,
int *eeprom_present)
{
u_int8_t brdctl;
/*
* 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);
/*
* 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);
*externalcable_present = !(brdctl & BRDDAT6);
*eeprom_present = brdctl & BRDDAT7;
}
static void
aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *externalcable_present, int *eeprom_present)
{
u_int8_t brdctl;
ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
ahc_outb(ahc, BRDCTL, 0);
brdctl = ahc_inb(ahc, BRDCTL);
*internal50_present = !(brdctl & BRDDAT5);
*externalcable_present = !(brdctl & BRDDAT6);
*eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) != 0;
}
static int
acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
{
int wait;
if ((ahc->features & AHC_SPIOCAP) != 0
&& (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
return (0);
/*
* 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_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
DELAY(1000); /* delay 1 msec */
}
if ((SEEPROM_STATUS_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;
if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
brdctl = BRDSTB;
if (ahc->channel == 'B')
brdctl |= BRDCS;
} else if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7890) {
brdctl = 0;
} else {
brdctl = BRDSTB|BRDCS;
}
ahc_outb(ahc, BRDCTL, brdctl);
brdctl |= value;
ahc_outb(ahc, BRDCTL, brdctl);
if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7890)
brdctl |= BRDSTB_ULTRA2;
else
brdctl &= ~BRDSTB;
ahc_outb(ahc, BRDCTL, brdctl);
if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7890)
brdctl = 0;
else
brdctl &= ~BRDCS;
ahc_outb(ahc, BRDCTL, brdctl);
}
static u_int8_t
read_brdctl(ahc)
struct ahc_softc *ahc;
{
u_int8_t brdctl;
u_int8_t value;
if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
brdctl = BRDRW;
if (ahc->channel == 'B')
brdctl |= BRDCS;
} else if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7890) {
brdctl = BRDRW_ULTRA2;
} else {
brdctl = BRDRW|BRDCS;
}
ahc_outb(ahc, BRDCTL, brdctl);
value = ahc_inb(ahc, BRDCTL);
ahc_outb(ahc, BRDCTL, 0);
return (value);
}
#define DPE 0x80
#define SSE 0x40
#define RMA 0x20
#define RTA 0x10
#define STA 0x08
#define DPR 0x01
void
ahc_pci_intr(struct ahc_softc *ahc)
{
u_int8_t status1;
status1 = pci_cfgread(ahc->pci_config_id, PCIR_STATUS + 1, /*bytes*/1);
if (status1 & DPE) {
printf("%s: Data Parity Error Detected during address "
"or write data phase\n", ahc_name(ahc));
}
if (status1 & SSE) {
printf("%s: Signal System Error Detected\n", ahc_name(ahc));
}
if (status1 & RMA) {
printf("%s: Received a Master Abort\n", ahc_name(ahc));
}
if (status1 & RTA) {
printf("%s: Received a Target Abort\n", ahc_name(ahc));
}
if (status1 & STA) {
printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
}
if (status1 & DPR) {
printf("%s: Data Parity Error has been reported via PERR#\n",
ahc_name(ahc));
}
if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
printf("%s: Latched PCIERR interrupt with "
"no status bits set\n", ahc_name(ahc));
}
pci_cfgwrite(ahc->pci_config_id, PCIR_STATUS + 1, status1, /*bytes*/1);
if (status1 & (DPR|RMA|RTA)) {
ahc_outb(ahc, CLRINT, CLRPARERR);
}
}
#endif /* NPCI > 0 */
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