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|
/* $OpenBSD: mlhsc.c,v 1.6 1997/01/18 12:26:34 niklas Exp $ */
/* $NetBSD: mlhsc.c,v 1.16 1996/12/23 09:10:25 veego Exp $ */
/*
* Copyright (c) 1994 Michael L. Hitch
* 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.
*
* @(#)dma.c
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>
#include <amiga/dev/scireg.h>
#include <amiga/dev/scivar.h>
#include <amiga/dev/zbusvar.h>
void mlhscattach __P((struct device *, struct device *, void *));
int mlhscmatch __P((struct device *, void *, void *));
int mlhsc_dma_xfer_in __P((struct sci_softc *dev, int len,
register u_char *buf, int phase));
int mlhsc_dma_xfer_out __P((struct sci_softc *dev, int len,
register u_char *buf, int phase));
struct scsi_adapter mlhsc_scsiswitch = {
sci_scsicmd,
sci_minphys,
0, /* no lun support */
0, /* no lun support */
};
struct scsi_device mlhsc_scsidev = {
NULL, /* use default error handler */
NULL, /* do not have a start functio */
NULL, /* have no async handler */
NULL, /* Use default done routine */
};
#ifdef DEBUG
extern int sci_debug;
#define QPRINTF(a) if (sci_debug > 1) printf a
#else
#define QPRINTF(a)
#endif
extern int sci_data_wait;
struct cfattach mlhsc_ca = {
sizeof(struct sci_softc), mlhscmatch, mlhscattach
};
struct cfdriver mlhsc_cd = {
NULL, "mlhsc", DV_DULL, NULL, 0
};
/*
* if we are my Hacker's SCSI board we are here.
*/
int
mlhscmatch(pdp, match, auxp)
struct device *pdp;
void *match, *auxp;
{
struct zbus_args *zap;
zap = auxp;
/*
* Check manufacturer and product id.
*/
if (zap->manid == 2011 && zap->prodid == 1)
return(1);
else
return(0);
}
void
mlhscattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
volatile u_char *rp;
struct sci_softc *sc;
struct zbus_args *zap;
printf("\n");
zap = auxp;
sc = (struct sci_softc *)dp;
rp = zap->va;
sc->sci_data = rp + 1;
sc->sci_odata = rp + 1;
sc->sci_icmd = rp + 3;
sc->sci_mode = rp + 5;
sc->sci_tcmd = rp + 7;
sc->sci_bus_csr = rp + 9;
sc->sci_sel_enb = rp + 9;
sc->sci_csr = rp + 11;
sc->sci_dma_send = rp + 11;
sc->sci_idata = rp + 13;
sc->sci_trecv = rp + 13;
sc->sci_iack = rp + 15;
sc->sci_irecv = rp + 15;
sc->dma_xfer_in = mlhsc_dma_xfer_in;
sc->dma_xfer_out = mlhsc_dma_xfer_out;
scireset(sc);
sc->sc_link.adapter_softc = sc;
sc->sc_link.adapter_target = 7;
sc->sc_link.adapter = &mlhsc_scsiswitch;
sc->sc_link.device = &mlhsc_scsidev;
sc->sc_link.openings = 1;
TAILQ_INIT(&sc->sc_xslist);
/*
* attach all scsi units on us
*/
config_found(dp, &sc->sc_link, scsiprint);
}
int
mlhsc_dma_xfer_in (dev, len, buf, phase)
struct sci_softc *dev;
int len;
register u_char *buf;
int phase;
{
int wait = sci_data_wait;
u_char csr;
volatile register u_char *sci_dma = dev->sci_data + 16;
volatile register u_char *sci_csr = dev->sci_csr;
#ifdef DEBUG
u_char *obp = buf;
#endif
csr = *dev->sci_bus_csr;
QPRINTF(("mlhdma_in %d, csr=%02x\n", len, csr));
*dev->sci_tcmd = phase;
*dev->sci_mode |= SCI_MODE_DMA;
*dev->sci_icmd = 0;
*dev->sci_irecv = 0;
while (len > 128) {
wait = sci_data_wait;
while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
(SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
|| !(*dev->sci_bus_csr & SCI_BUS_BSY)
|| --wait < 0) {
#ifdef DEBUG
if (sci_debug)
printf("mlhdma_in fail: l%d i%x w%d\n",
len, csr, wait);
#endif
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
#define R1 (*buf++ = *sci_dma)
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
R1; R1; R1; R1; R1; R1; R1; R1;
len -= 128;
}
while (len > 0) {
wait = sci_data_wait;
while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
(SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
|| !(*dev->sci_bus_csr & SCI_BUS_BSY)
|| --wait < 0) {
#ifdef DEBUG
if (sci_debug)
printf("mlhdma_in fail: l%d i%x w%d\n",
len, csr, wait);
#endif
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
*buf++ = *sci_dma;
len--;
}
QPRINTF(("mlhdma_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5],
obp[6], obp[7], obp[8], obp[9]));
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
int
mlhsc_dma_xfer_out (dev, len, buf, phase)
struct sci_softc *dev;
int len;
register u_char *buf;
int phase;
{
int wait = sci_data_wait;
u_char csr;
volatile register u_char *sci_dma = dev->sci_data + 16;
volatile register u_char *sci_csr = dev->sci_csr;
csr = *dev->sci_bus_csr;
QPRINTF(("mlhdma_xfer %d, csr=%02x\n", len, csr));
QPRINTF(("mlhgdma_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
buf[6], buf[7], buf[8], buf[9]));
*dev->sci_tcmd = phase;
*dev->sci_mode |= SCI_MODE_DMA;
*dev->sci_icmd = SCI_ICMD_DATA;
*dev->sci_dma_send = 0;
while (len > 64) {
wait = sci_data_wait;
while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
(SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
|| !(*dev->sci_bus_csr & SCI_BUS_BSY)
|| --wait < 0) {
#ifdef DEBUG
if (sci_debug)
printf("mlhdma_out fail: l%d i%x w%d\n",
len, csr, wait);
#endif
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
#define W1 (*sci_dma = *buf++)
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
W1; W1; W1; W1; W1; W1; W1; W1;
len -= 64;
}
while (len > 0) {
wait = sci_data_wait;
while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
(SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
|| !(*dev->sci_bus_csr & SCI_BUS_BSY)
|| --wait < 0) {
#ifdef DEBUG
if (sci_debug)
printf("mlhdma_out fail: l%d i%x w%d\n",
len, csr, wait);
#endif
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
*sci_dma = *buf++;
len--;
}
wait = sci_data_wait;
while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) ==
SCI_CSR_PHASE_MATCH && --wait);
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
|
