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NetBSD/sys/arch/amiga/dev/mlhsc.c

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resistance is futile, you will be assimilated. amiga goes: config.new *and* /sys/scsi. clock code coerced into a single .c file adding an accurate usec delay(). disklabel.c updated to DTRT, code to write RDB's to be added soon. sbic (old scsi) converted over to new scsi and config this covers about 90% of users. Other drivers soon.
1994-05-08 09:52:54 +04:00
/*
* 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.
*
* @(#)mlhdma.c
* $Id: mlhsc.c,v 1.1 1994/05/08 05:53:28 chopps Exp $
*/
/*
* dummy MLH 5380 DMA driver
*/
#include "mlhscsi.h"
#if NMLHSCSI > 0
#include <sys/param.h>
#include <amiga/dev/device.h>
#include <amiga/dev/scivar.h>
#include <amiga/dev/scireg.h>
#define QPRINTF
#ifdef DEBUG
extern int sci_debug;
#endif
#define HIST(h,w)
extern int sci_data_wait;
static int dma_xfer_in __P((struct sci_softc *dev, int len,
register u_char *buf, int phase));
static int dma_xfer_out __P((struct sci_softc *dev, int len,
register u_char *buf, int phase));
void
mlhdmainit (dev)
struct sci_softc *dev;
{
dev->dma_xfer_in = dma_xfer_in;
dev->dma_xfer_out = dma_xfer_out;
}
static int
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;
u_char *obp = buf;
#if 1
volatile register u_char *sci_dma = dev->sci_data + 16;
#else
volatile register u_char *sci_dma = dev->sci_data + 12;
#endif
volatile register u_char *sci_csr = dev->sci_csr;
volatile register u_char *sci_icmd = dev->sci_icmd;
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
HIST(ixin_wait, wait)
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
*buf++ = *sci_dma;
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
HIST(ixin_wait, wait)
*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]));
HIST(ixin_wait, wait)
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
static int
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;
u_char *obp = buf;
volatile register u_char *sci_dma = dev->sci_data + 16;
volatile register u_char *sci_csr = dev->sci_csr;
volatile register u_char *sci_icmd = dev->sci_icmd;
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
HIST(ixin_wait, wait)
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
}
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
*sci_dma = *buf++;
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
HIST(ixin_wait, wait)
*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);
HIST(ixin_wait, wait)
*dev->sci_mode &= ~SCI_MODE_DMA;
return 0;
}
#endif