NetBSD/sys/arch/arm32/podulebus/ptsc.c

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/* $NetBSD: ptsc.c,v 1.19 1998/05/24 18:19:29 mark Exp $ */
/*
* Copyright (c) 1995 Scott Stevens
* Copyright (c) 1995 Daniel Widenfalk
* Copyright (c) 1994 Christian E. Hopps
* Copyright (c) 1982, 1990 The Regents of the University of California.
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)ptsc.c
*/
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/*
* Power-tec SCSI-2 driver uses SFAS216 generic driver
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*
* Thanks to Alsystems for loaning a development card and providing
* programming information.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <machine/pmap.h>
#include <machine/io.h>
#include <machine/irqhandler.h>
#include <machine/bootconfig.h>
#include <arm32/podulebus/podulebus.h>
#include <arm32/podulebus/sfasreg.h>
#include <arm32/podulebus/sfasvar.h>
#include <arm32/podulebus/ptscreg.h>
#include <arm32/podulebus/ptscvar.h>
#include <arm32/podulebus/podules.h>
void ptscattach __P((struct device *, struct device *, void *));
int ptscmatch __P((struct device *, struct cfdata *, void *));
int ptsc_scsicmd __P((struct scsipi_xfer *));
struct scsipi_adapter ptsc_scsiswitch = {
ptsc_scsicmd,
sfas_minphys,
0, /* no lun support */
0, /* no lun support */
};
struct scsipi_device ptsc_scsidev = {
NULL, /* use default error handler */
NULL, /* do not have a start functio */
NULL, /* have no async handler */
NULL, /* Use default done routine */
};
struct cfattach ptsc_ca = {
sizeof(struct ptsc_softc), ptscmatch, ptscattach
};
int ptsc_intr __P((void *arg));
int ptsc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len,
int mode));
int ptsc_build_dma_chain __P((struct sfas_softc *sc,
struct sfas_dma_chain *chain, void *p, int l));
int ptsc_need_bump __P((struct sfas_softc *sc, void *ptr, int len));
void ptsc_led __P((struct sfas_softc *sc, int mode));
/*
* if we are a Power-tec SCSI-2 card
*/
int
ptscmatch(pdp, cf, auxp)
struct device *pdp;
struct cfdata *cf;
void *auxp;
{
struct podule_attach_args *pa = (struct podule_attach_args *)auxp;
/* Look for the card */
if (matchpodule(pa, MANUFACTURER_ALSYSTEMS, PODULE_ALSYSTEMS_SCSI, -1) == 0)
return(0);
return(1);
}
void
ptscattach(pdp, dp, auxp)
struct device *pdp;
struct device *dp;
void *auxp;
{
struct ptsc_softc *sc = (struct ptsc_softc *)dp;
struct podule_attach_args *pa;
ptsc_regmap_p rp = &sc->sc_regmap;
vu_char *fas;
pa = (struct podule_attach_args *)auxp;
if (pa->pa_podule_number == -1)
panic("Podule has disappeared !");
sc->sc_specific.sc_podule_number = pa->pa_podule_number;
sc->sc_specific.sc_podule = pa->pa_podule;
sc->sc_specific.sc_iobase =
(vu_char *)sc->sc_specific.sc_podule->fast_base;
rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET];
rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN];
rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS];
rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM];
rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED];
fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE];
rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL];
rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM];
rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO];
rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND];
rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID];
rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT];
rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD];
rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET];
rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1];
rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV];
rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST];
rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2];
rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3];
rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH];
rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM];
sc->sc_softc.sc_fas = (sfas_regmap_p)rp;
sc->sc_softc.sc_spec = &sc->sc_specific;
sc->sc_softc.sc_led = ptsc_led;
sc->sc_softc.sc_setup_dma = ptsc_setup_dma;
sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain;
sc->sc_softc.sc_need_bump = ptsc_need_bump;
sc->sc_softc.sc_clock_freq = 40; /* Power-Tec runs at 8MHz */
sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */
sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/;
sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */
sc->sc_softc.sc_bump_sz = NBPG;
sc->sc_softc.sc_bump_pa = 0x0;
sfasinitialize((struct sfas_softc *)sc);
sc->sc_softc.sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
sc->sc_softc.sc_link.adapter_softc = sc;
sc->sc_softc.sc_link.scsipi_scsi.adapter_target = sc->sc_softc.sc_host_id;
sc->sc_softc.sc_link.adapter = &ptsc_scsiswitch;
sc->sc_softc.sc_link.device = &ptsc_scsidev;
sc->sc_softc.sc_link.openings = 1;
sc->sc_softc.sc_link.scsipi_scsi.max_target = 7;
sc->sc_softc.sc_link.type = BUS_SCSI;
/* Provide an override for the host id */
(void)get_bootconf_option(boot_args, "ptsc.hostid",
BOOTOPT_TYPE_INT, &sc->sc_softc.sc_link.scsipi_scsi.adapter_target);
printf(" host=%d", sc->sc_softc.sc_link.scsipi_scsi.adapter_target);
sc->sc_softc.sc_ih.ih_func = ptsc_intr;
sc->sc_softc.sc_ih.ih_arg = &sc->sc_softc;
sc->sc_softc.sc_ih.ih_level = IPL_BIO;
sc->sc_softc.sc_ih.ih_name = "scsi: ptsc";
sc->sc_softc.sc_ih.ih_maskaddr = sc->sc_specific.sc_podule->irq_addr;
sc->sc_softc.sc_ih.ih_maskbits = sc->sc_specific.sc_podule->irq_mask;
/* initialise the card */
/* *rp->term = 0;*/
*rp->inten = (PTSC_POLL?0:1);
*rp->led = 0;
#if PTSC_POLL == 0
if (irq_claim(IRQ_PODULE /*IRQ_EXPCARD0 + sc->sc_specific.sc_podule_number */,
&sc->sc_softc.sc_ih))
panic("%s: Cannot install IRQ handler\n", dp->dv_xname);
#else
printf(" polling");
#endif
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printf("\n");
/* attach all scsi units on us */
config_found(dp, &sc->sc_softc.sc_link, scsiprint);
}
int
ptsc_intr(arg)
void *arg;
{
struct sfas_softc *dev = arg;
ptsc_regmap_p rp;
int quickints;
rp = (ptsc_regmap_p)dev->sc_fas;
if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) {
quickints = 16;
do {
dev->sc_status = *rp->FAS216.sfas_status;
dev->sc_interrupt = *rp->FAS216.sfas_interrupt;
if (dev->sc_interrupt & SFAS_INT_RESELECTED) {
dev->sc_resel[0] = *rp->FAS216.sfas_fifo;
dev->sc_resel[1] = *rp->FAS216.sfas_fifo;
}
sfasintr(dev);
} while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING)
&& --quickints);
}
return(0); /* Pass interrupt on down the chain */
}
/* Load transfer address into dma register */
void
ptsc_set_dma_adr(sc, ptr)
struct sfas_softc *sc;
void *ptr;
{
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#if 0
ptsc_regmap_p rp;
unsigned int *p;
unsigned int d;
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#endif
#if 0
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printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr);
#endif
return;
#if 0
rp = (ptsc_regmap_p)sc->sc_fas;
d = (unsigned int)ptr;
p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase);
*rp->clear=0;
*p = d;
#endif
}
/* Set DMA transfer counter */
void
ptsc_set_dma_tc(sc, len)
struct sfas_softc *sc;
unsigned int len;
{
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printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len);
*sc->sc_fas->sfas_tc_low = len; len >>= 8;
*sc->sc_fas->sfas_tc_mid = len; len >>= 8;
*sc->sc_fas->sfas_tc_high = len;
}
/* Set DMA mode */
void
ptsc_set_dma_mode(sc, mode)
struct sfas_softc *sc;
int mode;
{
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#if 0
struct csc_specific *spec;
spec = sc->sc_spec;
spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode;
*((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits;
#endif
}
/* Initialize DMA for transfer */
int
ptsc_setup_dma(sc, ptr, len, mode)
struct sfas_softc *sc;
void *ptr;
int len;
int mode;
{
int retval;
retval = 0;
#if 0
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printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode);
#endif
return(0);
#if 0
switch(mode) {
case SFAS_DMA_READ:
case SFAS_DMA_WRITE:
flsc_set_dma_adr(sc, ptr);
if (mode == SFAS_DMA_READ)
flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ);
else
flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE);
flsc_set_dma_tc(sc, len);
break;
case SFAS_DMA_CLEAR:
default:
flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA);
flsc_set_dma_adr(sc, 0);
retval = (*sc->sc_fas->sfas_tc_high << 16) |
(*sc->sc_fas->sfas_tc_mid << 8) |
*sc->sc_fas->sfas_tc_low;
flsc_set_dma_tc(sc, 0);
break;
}
return(retval);
#endif
}
/* Check if address and len is ok for DMA transfer */
int
ptsc_need_bump(sc, ptr, len)
struct sfas_softc *sc;
void *ptr;
int len;
{
int p;
p = (int)ptr & 0x03;
if (p) {
p = 4-p;
if (len < 256)
p = len;
}
return(p);
}
/* Interrupt driven routines */
int
ptsc_build_dma_chain(sc, chain, p, l)
struct sfas_softc *sc;
struct sfas_dma_chain *chain;
void *p;
int l;
{
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#if 0
vm_offset_t pa, lastpa;
char *ptr;
int len, prelen, postlen, max_t, n;
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#endif
#if 0
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printf("ptsc_build_dma_chain()\n");
#endif
return(0);
#if 0
if (l == 0)
return(0);
#define set_link(n, p, l, f)\
do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0)
n = 0;
if (l < 512)
set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP);
else if (p >= (void *)0xFF000000) {
while(l != 0) {
len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l);
set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP);
p += len;
l -= len;
}
} else {
ptr = p;
len = l;
pa = kvtop(ptr);
prelen = ((int)ptr & 0x03);
if (prelen) {
prelen = 4-prelen;
set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP);
ptr += prelen;
len -= prelen;
}
lastpa = 0;
while(len > 3) {
pa = kvtop(ptr);
max_t = NBPG - (pa & PGOFSET);
if (max_t > len)
max_t = len;
max_t &= ~3;
if (lastpa == pa)
sc->sc_chain[n-1].len += max_t;
else
set_link(n, pa, max_t, SFAS_CHAIN_DMA);
lastpa = pa+max_t;
ptr += max_t;
len -= max_t;
}
if (len)
set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP);
}
return(n);
#endif
}
/* Turn on/off led */
void
ptsc_led(sc, mode)
struct sfas_softc *sc;
int mode;
{
ptsc_regmap_p rp;
rp = (ptsc_regmap_p)sc->sc_fas;
if (mode) {
sc->sc_led_status++;
} else {
if (sc->sc_led_status)
sc->sc_led_status--;
}
*rp->led = (sc->sc_led_status?1:0);
}
int
ptsc_scsicmd(xs)
struct scsipi_xfer *xs;
{
/* ensure command is polling for the moment */
#if PTSC_POLL > 0
xs->flags |= SCSI_POLL;
#endif
#if 0
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printf("Opcode %d\n", (int)(xs->cmd->opcode));
#endif
return(sfas_scsicmd(xs));
}