NetBSD/sys/dev/pci/ahc_pci.c

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/* $NetBSD: ahc_pci.c,v 1.21 2000/01/26 06:44:18 thorpej Exp $ */
1996-05-20 04:56:39 +04:00
/*
* 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.
*
* from Id: aic7870.c,v 1.37 1996/06/08 06:55:55 gibbs Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/queue.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/ic/aic7xxxreg.h>
#include <dev/ic/aic7xxxvar.h>
/*
* Under normal circumstances, these messages are unnecessary
* and not terribly cosmetic.
*/
#ifdef DEBUG
#define bootverbose 1
#else
#define bootverbose 0
#endif
#define PCI_BASEADR_IO 0x10
#define PCI_BASEADR_MEM 0x14
#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_2940UP 0x87789004ul
dev/microcode/aic7xxx/aic7xxx.seq, dev/microcode/aic7xxx_seq.h, dev/ic/aic7xxxreg.h: Remove intrinsic knowledge about SDTR and WDTR messages and replace it with a generic message system that allows the kernel driver to handle SDTR, WDTR and any other type of extended message it chooses too. This makes the sequencer code much simpler, makes extended message handling debuggable since the bulk of the work is in the kernel driver, and saves lots of instruction space. Regen microcode header file. dev/ic/aic7xxx.c, dev/ic/aic7xxxvar.h: Add code to handle WDTR and SDTR negotiation in light of the changes in the message interface to the sequencer. Don't reject targets that negotiate async by sending an SDTR with a 0 offset. Use an sdtr message with 0,0 to negotiate async when a target suggests a period that is too long for us to handle. Some tape and cdrom drives don't like us doing the message reject that we did in the past. Fix a problem with handing the QUEUE FULL condition. Fix a race condition (most likely the cause of the SCB paging problems) that might allow the sequencer to get unpaused before the condition that caused it to be paused (a SEQINT) was handled. Race condition pointed out by Doug Ledford <dledford@dialnet.net> and by "Dan Willis" <dan@plutotech.com>. dev/pci/ahc_pci.c: Add support for the 2940AU, an aic7860 based controller. dev/pci/pcidevs.h, dev/pci/pcidevs_data.h: Add product IDs for the 2940AU, aic7860 and aic7855. Regen data file. scsi/scsi_message.h: Add MSG_EXT_SDTR_LEN and MSG_EXT_WDTR_LEN - the length of bytes in these extended messages. Thanks to Chuck Cranor <chuck@maria.wustl.edu> for testing these changes out for me.
1996-10-08 07:04:02 +04:00
#define PCI_DEVICE_ID_ADAPTEC_2940AU 0x61789004ul
#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 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
static u_char aic3940_count;
int ahc_pci_probe __P((struct device *, struct cfdata *, void *));
void ahc_pci_attach __P((struct device *, struct device *, void *));
struct cfattach ahc_pci_ca = {
sizeof(struct ahc_data), ahc_pci_probe, ahc_pci_attach
};
int
ahc_pci_probe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
switch (pa->pa_id) {
case PCI_DEVICE_ID_ADAPTEC_3940U:
case PCI_DEVICE_ID_ADAPTEC_2944U:
case PCI_DEVICE_ID_ADAPTEC_2940U:
case PCI_DEVICE_ID_ADAPTEC_2940UP:
dev/microcode/aic7xxx/aic7xxx.seq, dev/microcode/aic7xxx_seq.h, dev/ic/aic7xxxreg.h: Remove intrinsic knowledge about SDTR and WDTR messages and replace it with a generic message system that allows the kernel driver to handle SDTR, WDTR and any other type of extended message it chooses too. This makes the sequencer code much simpler, makes extended message handling debuggable since the bulk of the work is in the kernel driver, and saves lots of instruction space. Regen microcode header file. dev/ic/aic7xxx.c, dev/ic/aic7xxxvar.h: Add code to handle WDTR and SDTR negotiation in light of the changes in the message interface to the sequencer. Don't reject targets that negotiate async by sending an SDTR with a 0 offset. Use an sdtr message with 0,0 to negotiate async when a target suggests a period that is too long for us to handle. Some tape and cdrom drives don't like us doing the message reject that we did in the past. Fix a problem with handing the QUEUE FULL condition. Fix a race condition (most likely the cause of the SCB paging problems) that might allow the sequencer to get unpaused before the condition that caused it to be paused (a SEQINT) was handled. Race condition pointed out by Doug Ledford <dledford@dialnet.net> and by "Dan Willis" <dan@plutotech.com>. dev/pci/ahc_pci.c: Add support for the 2940AU, an aic7860 based controller. dev/pci/pcidevs.h, dev/pci/pcidevs_data.h: Add product IDs for the 2940AU, aic7860 and aic7855. Regen data file. scsi/scsi_message.h: Add MSG_EXT_SDTR_LEN and MSG_EXT_WDTR_LEN - the length of bytes in these extended messages. Thanks to Chuck Cranor <chuck@maria.wustl.edu> for testing these changes out for me.
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case PCI_DEVICE_ID_ADAPTEC_2940AU:
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:
return 1;
}
return 0;
}
void
ahc_pci_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pci_attach_args *pa = aux;
struct ahc_data *ahc = (void *)self;
bus_space_tag_t st, iot, memt;
bus_space_handle_t sh, ioh, memh;
int ioh_valid, memh_valid;
pci_intr_handle_t ih;
const char *intrstr;
u_long id;
unsigned opri = 0;
ahc_type ahc_t = AHC_NONE;
ahc_flag ahc_f = AHC_FNONE;
u_char ultra_enb = 0;
u_char our_id = 0;
ioh_valid = (pci_mapreg_map(pa, PCI_BASEADR_IO,
PCI_MAPREG_TYPE_IO, 0,
&iot, &ioh, NULL, NULL) == 0);
memh_valid = (pci_mapreg_map(pa, PCI_BASEADR_MEM,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
&memt, &memh, NULL, NULL) == 0);
if (memh_valid) {
st = memt;
sh = memh;
} else if (ioh_valid) {
st = iot;
sh = ioh;
} else {
printf(": unable to map registers\n");
return;
}
printf("\n");
switch (id = pa->pa_id) {
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;
aic3940_count++;
if(!(aic3940_count & 0x01))
/* Even count implies second channel */
ahc_f |= AHC_CHNLB;
break;
case PCI_DEVICE_ID_ADAPTEC_2944U:
case PCI_DEVICE_ID_ADAPTEC_2940U:
case PCI_DEVICE_ID_ADAPTEC_2940UP:
ahc_t = AHC_294U;
break;
case PCI_DEVICE_ID_ADAPTEC_2944:
case PCI_DEVICE_ID_ADAPTEC_2940:
ahc_t = AHC_294;
break;
dev/microcode/aic7xxx/aic7xxx.seq, dev/microcode/aic7xxx_seq.h, dev/ic/aic7xxxreg.h: Remove intrinsic knowledge about SDTR and WDTR messages and replace it with a generic message system that allows the kernel driver to handle SDTR, WDTR and any other type of extended message it chooses too. This makes the sequencer code much simpler, makes extended message handling debuggable since the bulk of the work is in the kernel driver, and saves lots of instruction space. Regen microcode header file. dev/ic/aic7xxx.c, dev/ic/aic7xxxvar.h: Add code to handle WDTR and SDTR negotiation in light of the changes in the message interface to the sequencer. Don't reject targets that negotiate async by sending an SDTR with a 0 offset. Use an sdtr message with 0,0 to negotiate async when a target suggests a period that is too long for us to handle. Some tape and cdrom drives don't like us doing the message reject that we did in the past. Fix a problem with handing the QUEUE FULL condition. Fix a race condition (most likely the cause of the SCB paging problems) that might allow the sequencer to get unpaused before the condition that caused it to be paused (a SEQINT) was handled. Race condition pointed out by Doug Ledford <dledford@dialnet.net> and by "Dan Willis" <dan@plutotech.com>. dev/pci/ahc_pci.c: Add support for the 2940AU, an aic7860 based controller. dev/pci/pcidevs.h, dev/pci/pcidevs_data.h: Add product IDs for the 2940AU, aic7860 and aic7855. Regen data file. scsi/scsi_message.h: Add MSG_EXT_SDTR_LEN and MSG_EXT_WDTR_LEN - the length of bytes in these extended messages. Thanks to Chuck Cranor <chuck@maria.wustl.edu> for testing these changes out for me.
1996-10-08 07:04:02 +04:00
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;
default:
break;
}
/* On all PCI adapters, we allow SCB paging */
ahc_f |= AHC_PAGESCBS;
/* Remeber how the card was setup in case there is no SEEPROM */
our_id = bus_space_read_1(st, sh, SCSIID) & OID;
if(ahc_t & AHC_ULTRA)
ultra_enb = bus_space_read_1(st, sh, SXFRCTL0) & ULTRAEN;
ahc_reset(ahc->sc_dev.dv_xname, st, sh);
if(ahc_t & AHC_AIC7870){
u_long devconfig =
pci_conf_read(pa->pa_pc, pa->pa_tag, DEVCONFIG);
if(devconfig & (RAMPSM)) {
/*
* External SRAM present. Have the probe walk
* the SCBs to see how much SRAM we have and set
* the number of SCBs accordingly. We have to
* turn off SCBRAMSEL to access the external
* SCB SRAM.
*
* It seems that early versions of the aic7870
* didn't use these bits, hence the hack for the
* 3940 above. I would guess that recent 3940s
* using later aic7870 or aic7880 chips do
* actually set RAMPSM.
*
* The documentation isn't clear, but it sounds
* like the value written to devconfig must not
* have RAMPSM set. The second sixteen bits of
* the register are R/O anyway, so it shouldn't
* affect RAMPSM either way.
*/
devconfig &= ~(RAMPSM|SCBRAMSEL);
pci_conf_write(pa->pa_pc, pa->pa_tag,
DEVCONFIG, devconfig);
}
}
1998-03-16 18:36:17 +03:00
ahc_construct(ahc, st, sh, pa->pa_dmat, ahc_t, ahc_f);
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &ih)) {
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printf("%s: couldn't map interrupt\n", ahc->sc_dev.dv_xname);
ahc_free(ahc);
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
ahc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahc_intr, ahc);
if (ahc->sc_ih == NULL) {
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printf("%s: couldn't establish interrupt",
ahc->sc_dev.dv_xname);
if (intrstr != NULL)
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printf(" at %s", intrstr);
printf("\n");
ahc_free(ahc);
return;
}
if (intrstr != NULL)
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printf("%s: interrupting at %s\n", ahc->sc_dev.dv_xname,
intrstr);
/*
* Protect ourself from spurrious interrupts during
* intialization.
*/
opri = splbio();
/*
* Do aic7870/aic7880/aic7850 specific initialization
*/
{
u_char sblkctl;
char *id_string;
switch(ahc->type) {
case AHC_394U:
case AHC_294U:
case AHC_AIC7880:
{
id_string = "aic7880 ";
ahc_load_seeprom(ahc);
break;
}
case AHC_394:
case AHC_294:
case AHC_AIC7870:
{
id_string = "aic7870 ";
ahc_load_seeprom(ahc);
break;
}
dev/microcode/aic7xxx/aic7xxx.seq, dev/microcode/aic7xxx_seq.h, dev/ic/aic7xxxreg.h: Remove intrinsic knowledge about SDTR and WDTR messages and replace it with a generic message system that allows the kernel driver to handle SDTR, WDTR and any other type of extended message it chooses too. This makes the sequencer code much simpler, makes extended message handling debuggable since the bulk of the work is in the kernel driver, and saves lots of instruction space. Regen microcode header file. dev/ic/aic7xxx.c, dev/ic/aic7xxxvar.h: Add code to handle WDTR and SDTR negotiation in light of the changes in the message interface to the sequencer. Don't reject targets that negotiate async by sending an SDTR with a 0 offset. Use an sdtr message with 0,0 to negotiate async when a target suggests a period that is too long for us to handle. Some tape and cdrom drives don't like us doing the message reject that we did in the past. Fix a problem with handing the QUEUE FULL condition. Fix a race condition (most likely the cause of the SCB paging problems) that might allow the sequencer to get unpaused before the condition that caused it to be paused (a SEQINT) was handled. Race condition pointed out by Doug Ledford <dledford@dialnet.net> and by "Dan Willis" <dan@plutotech.com>. dev/pci/ahc_pci.c: Add support for the 2940AU, an aic7860 based controller. dev/pci/pcidevs.h, dev/pci/pcidevs_data.h: Add product IDs for the 2940AU, aic7860 and aic7855. Regen data file. scsi/scsi_message.h: Add MSG_EXT_SDTR_LEN and MSG_EXT_WDTR_LEN - the length of bytes in these extended messages. Thanks to Chuck Cranor <chuck@maria.wustl.edu> for testing these changes out for me.
1996-10-08 07:04:02 +04:00
case AHC_294AU:
case AHC_AIC7860:
{
id_string = "aic7860 ";
ahc_load_seeprom(ahc);
break;
}
case AHC_AIC7850:
{
id_string = "aic7850 ";
/*
* Use defaults, if the chip wasn't initialized by
* a BIOS.
*/
ahc->flags |= AHC_USEDEFAULTS;
break;
}
default:
{
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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_long 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)) {
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printf("%s: Using left over BIOS settings\n",
ahc_name(ahc));
ahc->flags &= ~AHC_USEDEFAULTS;
}
else
our_id = 0x07;
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 || (ahc->flags & AHC_USEDEFAULTS)) {
/*
* If there wasn't a BIOS or the board
* wasn't in this mode to begin with,
* turn off ultra.
*/
ahc->type &= ~AHC_ULTRA;
}
}
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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 */
}
splx(opri);
ahc_attach(ahc);
}