NetBSD-5.0.2/sys/arch/acorn32/podulebus/csc.c
/* $NetBSD: csc.c,v 1.14 2008/04/28 20:23:10 martin Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Scott Stevens.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Cumana SCSI-2 driver uses the SFAS216 generic driver
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: csc.c,v 1.14 2008/04/28 20:23:10 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <machine/io.h>
#include <machine/intr.h>
#include <machine/bootconfig.h>
#include <acorn32/podulebus/podulebus.h>
#include <acorn32/podulebus/sfasreg.h>
#include <acorn32/podulebus/sfasvar.h>
#include <acorn32/podulebus/cscreg.h>
#include <acorn32/podulebus/cscvar.h>
#include <dev/podulebus/podules.h>
#include <dev/podulebus/powerromreg.h>
int cscmatch(struct device *, struct cfdata *, void *);
void cscattach(struct device *, struct device *, void *);
CFATTACH_DECL(csc, sizeof(struct csc_softc),
cscmatch, cscattach, NULL, NULL);
int csc_intr(void *);
int csc_setup_dma(void *, void *, int, int);
int csc_build_dma_chain(void *, void *, void *, int);
int csc_need_bump(void *, void *, int);
void csc_led(void *, int);
void csc_set_dma_adr(struct sfas_softc *, void *);
void csc_set_dma_tc(struct sfas_softc *, unsigned int);
void csc_set_dma_mode(struct sfas_softc *, int);
/*
* if we are a Cumana SCSI-2 card
*/
int
cscmatch(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 (pa->pa_product == PODULE_CUMANA_SCSI2)
return 1;
/* PowerROM */
if (pa->pa_product == PODULE_ALSYSTEMS_SCSI &&
podulebus_initloader(pa) == 0 &&
podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2)
return 1;
return 0;
}
void
cscattach(pdp, dp, auxp)
struct device *pdp;
struct device *dp;
void *auxp;
{
struct csc_softc *sc = (struct csc_softc *)dp;
struct podule_attach_args *pa;
csc_regmap_p rp = &sc->sc_regmap;
vu_char *fas;
int loop;
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->mod_base;
rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0];
rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH];
rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK];
fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE];
rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL];
rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM];
rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO];
rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND];
rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID];
rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT];
rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD];
rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET];
rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1];
rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV];
rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST];
rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2];
rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3];
rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH];
rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT];
sc->sc_softc.sc_fas = (sfas_regmap_p)rp;
sc->sc_softc.sc_spec = &sc->sc_specific;
sc->sc_softc.sc_led = csc_led;
sc->sc_softc.sc_setup_dma = csc_setup_dma;
sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain;
sc->sc_softc.sc_need_bump = csc_need_bump;
sc->sc_softc.sc_clock_freq = 8; /* Cumana 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 = PAGE_SIZE;
sc->sc_softc.sc_bump_pa = 0x0;
sfasinitialize((struct sfas_softc *)sc);
sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev;
sc->sc_softc.sc_adapter.adapt_nchannels = 1;
sc->sc_softc.sc_adapter.adapt_openings = 7;
sc->sc_softc.sc_adapter.adapt_max_periph = 1;
sc->sc_softc.sc_adapter.adapt_ioctl = NULL;
sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys;
sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request;
sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter;
sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype;
sc->sc_softc.sc_channel.chan_channel = 0;
sc->sc_softc.sc_channel.chan_ntargets = 8;
sc->sc_softc.sc_channel.chan_nluns = 8;
sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id;
/* Provide an override for the host id */
(void)get_bootconf_option(boot_args, "csc.hostid",
BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id);
printf(": host=%d", sc->sc_softc.sc_channel.chan_id);
/* initialise the alatch */
sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN);
for (loop = 0; loop < 8; loop ++) {
if(loop != 3)
*rp->alatch = (loop << 1) |
((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0);
}
#if CSC_POLL == 0
evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL,
dp->dv_xname, "intr");
sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO,
csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt);
if (sc->sc_softc.sc_ih == NULL)
panic("%s: Cannot install IRQ handler", dp->dv_xname);
#else
printf(" polling");
sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY;
#endif
printf("\n");
/* attach all scsi units on us */
config_found(dp, &sc->sc_softc.sc_channel, scsiprint);
}
int
csc_intr(arg)
void *arg;
{
struct sfas_softc *dev = arg;
csc_regmap_p rp;
int quickints;
rp = (csc_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
csc_set_dma_adr(sc, ptr)
struct sfas_softc *sc;
void *ptr;
{
return;
}
/* Set DMA transfer counter */
void
csc_set_dma_tc(sc, len)
struct sfas_softc *sc;
unsigned int 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
csc_set_dma_mode(sc, mode)
struct sfas_softc *sc;
int mode;
{
}
/* Initialize DMA for transfer */
int
csc_setup_dma(sc, ptr, len, mode)
void *sc;
void *ptr;
int len;
int mode;
{
return (0);
}
/* Check if address and len is ok for DMA transfer */
int
csc_need_bump(sc, ptr, len)
void *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
csc_build_dma_chain(sc, chain, p, l)
void *sc;
void *chain;
void *p;
int l;
{
return(0);
}
/* Turn on/off led */
void
csc_led(v, mode)
void *v;
int mode;
{
struct sfas_softc *sc = v;
csc_regmap_p rp;
rp = (csc_regmap_p)sc->sc_fas;
if (mode) {
sc->sc_led_status++;
} else {
if (sc->sc_led_status)
sc->sc_led_status--;
}
}