static void
aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *internal68_present, int *externalcable_present,
int *eeprom_present)
{
uint8_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) ? 0 : 1;
*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
/*
* 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) ? 0 : 1;
*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
}
static void
aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
int *internal68_present, int *externalcable_present,
int *eeprom_present)
{
uint8_t brdctl;
write_brdctl(ahc, 0);
brdctl = read_brdctl(ahc);
*internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
write_brdctl(ahc, BRDDAT5);
brdctl = read_brdctl(ahc);
*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
}
static void
configure_termination(struct ahc_softc *ahc,
struct seeprom_descriptor *sd,
u_int adapter_control,
u_int *sxfrctl1)
{
uint8_t brddat;
brddat = 0;
*sxfrctl1 = 0;
SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
if ((adapter_control & CFAUTOTERM) != 0
|| (ahc->features & AHC_NEW_TERMCTL) != 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;
int sum;
enableSEC_low = 0;
enableSEC_high = 0;
enablePRI_low = 0;
enablePRI_high = 0;
if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
ahc_new_term_detect(ahc, &enableSEC_low,
&enableSEC_high,
&enablePRI_low,
&enablePRI_high,
&eeprom_present);
if ((adapter_control & CFSEAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual SE Termination\n",
ahc_name(ahc));
enableSEC_low = (adapter_control & CFSELOWTERM);
enableSEC_high =
(adapter_control & CFSEHIGHTERM);
}
if ((adapter_control & CFAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual LVD Termination\n",
ahc_name(ahc));
enablePRI_low = (adapter_control & CFSTERM);
enablePRI_high = (adapter_control & CFWSTERM);
}
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);
internal68_present = 0;
} else {
aic787X_cable_detect(ahc, &internal50_present,
&internal68_present,
&externalcable_present,
&eeprom_present);
}
if ((ahc->features & AHC_WIDE) == 0)
internal68_present = 0;
if (bootverbose
&& (ahc->features & AHC_ULTRA2) == 0) {
printf("%s: internal 50 cable %s present",
ahc_name(ahc),
internal50_present ? "is":"not");
if ((ahc->features & AHC_WIDE) != 0)
printf(", internal 68 cable %s present",
internal68_present ? "is":"not");
printf("\n%s: external cable %s present\n",
ahc_name(ahc),
externalcable_present ? "is":"not");
}
if (bootverbose)
printf("%s: BIOS eeprom %s present\n",
ahc_name(ahc), eeprom_present ? "is" : "not");
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
internal50_present = 0;
}
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));
internal50_present = 0;
internal68_present = 0;
externalcable_present = 0;
}
if ((ahc->features & AHC_WIDE) != 0
&& ((externalcable_present == 0)
|| (internal68_present == 0)
|| (enableSEC_high != 0))) {
brddat |= BRDDAT6;
if (bootverbose) {
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
printf("%s: 68 pin termination "
"Enabled\n", ahc_name(ahc));
else
printf("%s: %sHigh byte termination "
"Enabled\n", ahc_name(ahc),
enableSEC_high ? "Secondary "
: "");
}
}
sum = internal50_present + internal68_present
+ externalcable_present;
if (sum < 2 || (enableSEC_low != 0)) {
if ((ahc->features & AHC_ULTRA2) != 0)
brddat |= BRDDAT5;
else
*sxfrctl1 |= STPWEN;
if (bootverbose) {
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
printf("%s: 50 pin termination "
"Enabled\n", ahc_name(ahc));
else
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));
}
ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
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 ((adapter_control & CFSTERM) != 0) {
*sxfrctl1 |= STPWEN;
if (bootverbose)
printf("%s: %sLow byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2) ? "Primary "
: "");
}
if ((adapter_control & CFWSTERM) != 0
&& (ahc->features & AHC_WIDE) != 0) {
brddat |= BRDDAT6;
if (bootverbose)
printf("%s: %sHigh byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2)
? "Secondary " : "");
}
ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
if ((ahc->features & AHC_WIDE) != 0)
write_brdctl(ahc, brddat);
}
SEEPROM_OUTB(sd, sd->sd_MS);
}
static void
configure_termination(struct ahc_softc *ahc,
struct seeprom_descriptor *sd,
u_int adapter_control,
u_int *sxfrctl1)
{
uint8_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 ((adapter_control & CFAUTOTERM) != 0
|| (ahc->features & AHC_NEW_TERMCTL) != 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;
int sum;
enableSEC_low = 0;
enableSEC_high = 0;
enablePRI_low = 0;
enablePRI_high = 0;
if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
ahc_new_term_detect(ahc, &enableSEC_low,
&enableSEC_high,
&enablePRI_low,
&enablePRI_high,
&eeprom_present);
if ((adapter_control & CFSEAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual SE Termination\n",
ahc_name(ahc));
enableSEC_low = (adapter_control & CFSELOWTERM);
enableSEC_high =
(adapter_control & CFSEHIGHTERM);
}
if ((adapter_control & CFAUTOTERM) == 0) {
if (bootverbose)
printf("%s: Manual LVD Termination\n",
ahc_name(ahc));
enablePRI_low = (adapter_control & CFSTERM);
enablePRI_high = (adapter_control & CFWSTERM);
}
/* 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);
/* Can never support a wide connector. */
internal68_present = 0;
} else {
aic787X_cable_detect(ahc, &internal50_present,
&internal68_present,
&externalcable_present,
&eeprom_present);
}
if ((ahc->features & AHC_WIDE) == 0)
internal68_present = 0;
if (bootverbose
&& (ahc->features & AHC_ULTRA2) == 0) {
printf("%s: internal 50 cable %s present",
ahc_name(ahc),
internal50_present ? "is":"not");
if ((ahc->features & AHC_WIDE) != 0)
printf(", internal 68 cable %s present",
internal68_present ? "is":"not");
printf("\n%s: external cable %s present\n",
ahc_name(ahc),
externalcable_present ? "is":"not");
}
if (bootverbose)
printf("%s: BIOS eeprom %s present\n",
ahc_name(ahc), eeprom_present ? "is" : "not");
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
/*
* The 50 pin connector is a separate bus,
* so force it to always be terminated.
* In the future, perform current sensing
* to determine if we are in the middle of
* a properly terminated bus.
*/
internal50_present = 0;
}
/*
* 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));
/*
* Pretend there are no cables in the hope
* that having all of the termination on
* gives us a more stable bus.
*/
internal50_present = 0;
internal68_present = 0;
externalcable_present = 0;
}
if ((ahc->features & AHC_WIDE) != 0
&& ((externalcable_present == 0)
|| (internal68_present == 0)
|| (enableSEC_high != 0))) {
brddat |= BRDDAT6;
if (bootverbose) {
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
printf("%s: 68 pin termination "
"Enabled\n", ahc_name(ahc));
else
printf("%s: %sHigh byte termination "
"Enabled\n", ahc_name(ahc),
enableSEC_high ? "Secondary "
: "");
}
}
sum = internal50_present + internal68_present
+ externalcable_present;
if (sum < 2 || (enableSEC_low != 0)) {
if ((ahc->features & AHC_ULTRA2) != 0)
brddat |= BRDDAT5;
else
*sxfrctl1 |= STPWEN;
if (bootverbose) {
if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
printf("%s: 50 pin termination "
"Enabled\n", ahc_name(ahc));
else
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));
}
/*
* Setup STPWEN before setting up the rest of
* the termination per the tech note on the U160 cards.
*/
ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
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 ((adapter_control & CFSTERM) != 0) {
*sxfrctl1 |= STPWEN;
if (bootverbose)
printf("%s: %sLow byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2) ? "Primary "
: "");
}
if ((adapter_control & CFWSTERM) != 0
&& (ahc->features & AHC_WIDE) != 0) {
brddat |= BRDDAT6;
if (bootverbose)
printf("%s: %sHigh byte termination Enabled\n",
ahc_name(ahc),
(ahc->features & AHC_ULTRA2)
? "Secondary " : "");
}
/*
* Setup STPWEN before setting up the rest of
* the termination per the tech note on the U160 cards.
*/
ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
if ((ahc->features & AHC_WIDE) != 0)
write_brdctl(ahc, brddat);
}
SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
}
