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

342 lines
9.5 KiB
C

/* $NetBSD: csc.c,v 1.4 1998/12/05 19:43:41 mjacob 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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/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/cscreg.h>
#include <arm32/podulebus/cscvar.h>
#include <arm32/podulebus/podules.h>
void cscattach __P((struct device *, struct device *, void *));
int cscmatch __P((struct device *, struct cfdata *, void *));
int csc_scsicmd __P((struct scsipi_xfer *));
struct scsipi_device csc_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 csc_ca = {
sizeof(struct csc_softc), cscmatch, cscattach
};
int csc_intr __P((void *arg));
int csc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len,
int mode));
int csc_build_dma_chain __P((struct sfas_softc *sc,
struct sfas_dma_chain *chain, void *p, int l));
int csc_need_bump __P((struct sfas_softc *sc, void *ptr, int len));
void csc_led __P((struct sfas_softc *sc, int mode));
/*
* 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 (matchpodule(pa, MANUFACTURER_CUMANA, PODULE_CUMANA_SCSI2, -1) == 0)
return(0);
return(1);
}
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 = NBPG;
sc->sc_softc.sc_bump_pa = 0x0;
sfasinitialize((struct sfas_softc *)sc);
sc->sc_softc.sc_adapter.scsipi_cmd = csc_scsicmd;
sc->sc_softc.sc_adapter.scsipi_minphys = sfas_minphys;
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 = &sc->sc_adapter;
sc->sc_softc.sc_link.device = &csc_scsidev;
sc->sc_softc.sc_link.openings = 1;
sc->sc_softc.sc_link.scsipi_scsi.max_target = 7;
sc->sc_softc.sc_link.scsipi_scsi.max_lun = 7;
sc->sc_softc.sc_link.type = BUS_SCSI;
/* Provide an override for the host id */
(void)get_bootconf_option(boot_args, "csc.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 = csc_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: csc";
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 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
if (irq_claim(IRQ_PODULE, &sc->sc_softc.sc_ih))
panic("%s: Cannot install IRQ handler\n", dp->dv_xname);
#else
printf(" polling");
#endif
printf("\n");
/* attach all scsi units on us */
config_found(dp, &sc->sc_softc.sc_link, 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)
struct sfas_softc *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)
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
csc_build_dma_chain(sc, chain, p, l)
struct sfas_softc *sc;
struct sfas_dma_chain *chain;
void *p;
int l;
{
return(0);
}
/* Turn on/off led */
void
csc_led(sc, mode)
struct sfas_softc *sc;
int mode;
{
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--;
}
}
int
csc_scsicmd(xs)
struct scsipi_xfer *xs;
{
/* ensure command is polling for the moment */
#if CSC_POLL > 0
xs->flags |= SCSI_POLL;
#endif
return(sfas_scsicmd(xs));
}