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ivsc.c revision 1.11
      1  1.11  chopps /*	$NetBSD: ivsc.c,v 1.11 1995/05/07 15:37:10 chopps Exp $	*/
      2   1.5     cgd 
      3   1.1  chopps /*
      4   1.2  chopps  * Copyright (c) 1994 Michael L. Hitch
      5   1.1  chopps  * Copyright (c) 1982, 1990 The Regents of the University of California.
      6   1.1  chopps  * All rights reserved.
      7   1.1  chopps  *
      8   1.1  chopps  * Redistribution and use in source and binary forms, with or without
      9   1.1  chopps  * modification, are permitted provided that the following conditions
     10   1.1  chopps  * are met:
     11   1.1  chopps  * 1. Redistributions of source code must retain the above copyright
     12   1.1  chopps  *    notice, this list of conditions and the following disclaimer.
     13   1.1  chopps  * 2. Redistributions in binary form must reproduce the above copyright
     14   1.1  chopps  *    notice, this list of conditions and the following disclaimer in the
     15   1.1  chopps  *    documentation and/or other materials provided with the distribution.
     16   1.1  chopps  * 3. All advertising materials mentioning features or use of this software
     17   1.1  chopps  *    must display the following acknowledgement:
     18   1.1  chopps  *	This product includes software developed by the University of
     19   1.1  chopps  *	California, Berkeley and its contributors.
     20   1.1  chopps  * 4. Neither the name of the University nor the names of its contributors
     21   1.1  chopps  *    may be used to endorse or promote products derived from this software
     22   1.1  chopps  *    without specific prior written permission.
     23   1.1  chopps  *
     24   1.1  chopps  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25   1.1  chopps  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26   1.1  chopps  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27   1.1  chopps  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28   1.1  chopps  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29   1.1  chopps  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30   1.1  chopps  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31   1.1  chopps  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32   1.1  chopps  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33   1.1  chopps  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34   1.1  chopps  * SUCH DAMAGE.
     35   1.1  chopps  *
     36   1.1  chopps  *	@(#)ivsdma.c
     37   1.1  chopps  */
     38   1.2  chopps #include <sys/param.h>
     39   1.2  chopps #include <sys/systm.h>
     40   1.2  chopps #include <sys/kernel.h>
     41   1.2  chopps #include <sys/device.h>
     42   1.2  chopps #include <scsi/scsi_all.h>
     43   1.2  chopps #include <scsi/scsiconf.h>
     44   1.2  chopps #include <amiga/amiga/custom.h>
     45   1.2  chopps #include <amiga/amiga/device.h>
     46   1.9  chopps #include <amiga/amiga/isr.h>
     47   1.2  chopps #include <amiga/dev/scireg.h>
     48   1.2  chopps #include <amiga/dev/scivar.h>
     49   1.7  chopps #include <amiga/dev/zbusvar.h>
     50   1.2  chopps 
     51   1.2  chopps int ivscprint __P((void *auxp, char *));
     52   1.2  chopps void ivscattach __P((struct device *, struct device *, void *));
     53   1.2  chopps int ivscmatch __P((struct device *, struct cfdata *, void *));
     54   1.2  chopps 
     55   1.9  chopps int ivsc_intr __P((struct sci_softc *));
     56   1.2  chopps int ivsc_dma_xfer_in __P((struct sci_softc *dev, int len,
     57   1.2  chopps     register u_char *buf, int phase));
     58   1.2  chopps int ivsc_dma_xfer_out __P((struct sci_softc *dev, int len,
     59   1.2  chopps     register u_char *buf, int phase));
     60   1.2  chopps 
     61   1.2  chopps struct scsi_adapter ivsc_scsiswitch = {
     62   1.2  chopps 	sci_scsicmd,
     63   1.2  chopps 	sci_minphys,
     64   1.2  chopps 	0,			/* no lun support */
     65   1.2  chopps 	0,			/* no lun support */
     66   1.2  chopps };
     67   1.2  chopps 
     68   1.2  chopps struct scsi_device ivsc_scsidev = {
     69   1.2  chopps 	NULL,		/* use default error handler */
     70   1.2  chopps 	NULL,		/* do not have a start functio */
     71   1.2  chopps 	NULL,		/* have no async handler */
     72   1.2  chopps 	NULL,		/* Use default done routine */
     73   1.2  chopps };
     74   1.2  chopps 
     75   1.2  chopps #define QPRINTF
     76   1.2  chopps 
     77   1.2  chopps #ifdef DEBUG
     78   1.2  chopps extern int sci_debug;
     79   1.2  chopps #endif
     80   1.2  chopps 
     81   1.2  chopps extern int sci_data_wait;
     82   1.2  chopps 
     83  1.11  chopps int ivsdma_pseudo = 1;		/* 0=off, 1=on */
     84  1.11  chopps 
     85   1.2  chopps struct cfdriver ivsccd = {
     86   1.6  chopps 	NULL, "ivsc", (cfmatch_t)ivscmatch, ivscattach,
     87   1.2  chopps 	DV_DULL, sizeof(struct sci_softc), NULL, 0 };
     88   1.1  chopps 
     89   1.1  chopps /*
     90   1.2  chopps  * if this is an IVS board
     91   1.1  chopps  */
     92   1.2  chopps int
     93   1.2  chopps ivscmatch(pdp, cdp, auxp)
     94   1.2  chopps 	struct device *pdp;
     95   1.2  chopps 	struct cfdata *cdp;
     96   1.2  chopps 	void *auxp;
     97   1.2  chopps {
     98   1.7  chopps 	struct zbus_args *zap;
     99   1.1  chopps 
    100   1.2  chopps 	zap = auxp;
    101   1.1  chopps 
    102   1.2  chopps 	/*
    103   1.2  chopps 	 * Check manufacturer and product id.
    104   1.2  chopps 	 */
    105   1.2  chopps 	if (zap->manid != 2112 ||	/* If manufacturer is IVS */
    106   1.2  chopps 	    (zap->prodid != 52 &&	/*   product = Trumpcard */
    107   1.2  chopps 	    zap->prodid != 243))	/*   product = Vector SCSI */
    108   1.2  chopps 		return(0);		/* didn't match */
    109   1.2  chopps 	return(1);
    110   1.2  chopps }
    111   1.1  chopps 
    112   1.1  chopps void
    113   1.2  chopps ivscattach(pdp, dp, auxp)
    114   1.2  chopps 	struct device *pdp, *dp;
    115   1.2  chopps 	void *auxp;
    116   1.2  chopps {
    117   1.2  chopps 	volatile u_char *rp;
    118   1.2  chopps 	struct sci_softc *sc;
    119   1.7  chopps 	struct zbus_args *zap;
    120   1.3  chopps 
    121   1.3  chopps 	printf("\n");
    122   1.2  chopps 
    123   1.2  chopps 	zap = auxp;
    124   1.2  chopps 
    125   1.2  chopps 	sc = (struct sci_softc *)dp;
    126   1.2  chopps 	rp = zap->va + 0x40;
    127   1.2  chopps 	sc->sci_data = rp;
    128   1.2  chopps 	sc->sci_odata = rp;
    129   1.2  chopps 	sc->sci_icmd = rp + 2;
    130   1.2  chopps 	sc->sci_mode = rp + 4;
    131   1.2  chopps 	sc->sci_tcmd = rp + 6;
    132   1.2  chopps 	sc->sci_bus_csr = rp + 8;
    133   1.2  chopps 	sc->sci_sel_enb = rp + 8;
    134   1.2  chopps 	sc->sci_csr = rp + 10;
    135   1.2  chopps 	sc->sci_dma_send = rp + 10;
    136   1.2  chopps 	sc->sci_idata = rp + 12;
    137   1.2  chopps 	sc->sci_trecv = rp + 12;
    138   1.2  chopps 	sc->sci_iack = rp + 14;
    139   1.2  chopps 	sc->sci_irecv = rp + 14;
    140   1.2  chopps 
    141  1.11  chopps 	if (ivsdma_pseudo == 1) {
    142  1.11  chopps 		sc->dma_xfer_in = ivsc_dma_xfer_in;
    143  1.11  chopps 		sc->dma_xfer_out = ivsc_dma_xfer_out;
    144  1.11  chopps 	}
    145   1.2  chopps 
    146   1.9  chopps 	sc->sc_isr.isr_intr = ivsc_intr;
    147   1.9  chopps 	sc->sc_isr.isr_arg = sc;
    148   1.9  chopps 	sc->sc_isr.isr_ipl = 2;
    149   1.9  chopps 	add_isr(&sc->sc_isr);
    150   1.9  chopps 
    151   1.2  chopps 	scireset(sc);
    152   1.2  chopps 
    153   1.2  chopps 	sc->sc_link.adapter_softc = sc;
    154   1.8  chopps 	sc->sc_link.adapter_target = 7;
    155   1.2  chopps 	sc->sc_link.adapter = &ivsc_scsiswitch;
    156   1.2  chopps 	sc->sc_link.device = &ivsc_scsidev;
    157   1.8  chopps 	sc->sc_link.openings = 1;
    158   1.2  chopps 	TAILQ_INIT(&sc->sc_xslist);
    159   1.2  chopps 
    160   1.2  chopps 	/*
    161   1.2  chopps 	 * attach all scsi units on us
    162   1.2  chopps 	 */
    163   1.2  chopps 	config_found(dp, &sc->sc_link, ivscprint);
    164   1.2  chopps }
    165   1.2  chopps 
    166   1.2  chopps /*
    167   1.2  chopps  * print diag if pnp is NULL else just extra
    168   1.2  chopps  */
    169   1.2  chopps int
    170   1.2  chopps ivscprint(auxp, pnp)
    171   1.2  chopps 	void *auxp;
    172   1.2  chopps 	char *pnp;
    173   1.2  chopps {
    174   1.2  chopps 	if (pnp == NULL)
    175   1.2  chopps 		return(UNCONF);
    176   1.2  chopps 	return(QUIET);
    177   1.2  chopps }
    178   1.2  chopps 
    179   1.2  chopps int
    180   1.2  chopps ivsc_dma_xfer_in (dev, len, buf, phase)
    181   1.2  chopps 	struct sci_softc *dev;
    182   1.2  chopps 	int len;
    183   1.2  chopps 	register u_char *buf;
    184   1.2  chopps 	int phase;
    185   1.2  chopps {
    186  1.11  chopps 	int wait = sci_data_wait;
    187  1.11  chopps 	u_char csr;
    188  1.11  chopps 	u_char *obp = buf;
    189  1.11  chopps 	volatile register u_char *sci_dma = dev->sci_idata + 0x20;
    190  1.11  chopps 	volatile register u_char *sci_csr = dev->sci_csr;
    191  1.11  chopps 
    192  1.11  chopps 	QPRINTF(("ivsc_dma_in %d, csr=%02x\n", len, *dev->sci_bus_csr));
    193  1.11  chopps 
    194  1.11  chopps 	*dev->sci_tcmd = phase;
    195  1.11  chopps 	*dev->sci_mode |= SCI_MODE_DMA;
    196  1.11  chopps 	*dev->sci_irecv = 0;
    197  1.11  chopps 
    198  1.11  chopps 	while (len >= 128) {
    199  1.11  chopps 		wait = sci_data_wait;
    200  1.11  chopps 		while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
    201  1.11  chopps 		  (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
    202  1.11  chopps 			if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
    203  1.11  chopps 			  || !(*dev->sci_bus_csr & SCI_BUS_BSY)
    204  1.11  chopps 			  || --wait < 0) {
    205  1.11  chopps #ifdef DEBUG
    206  1.11  chopps 				if (sci_debug)
    207  1.11  chopps 					printf("ivsc_dma_in2 fail: l%d i%x w%d\n",
    208  1.11  chopps 					len, csr, wait);
    209  1.11  chopps #endif
    210  1.11  chopps 				*dev->sci_mode &= ~SCI_MODE_DMA;
    211  1.11  chopps 				return 0;
    212  1.11  chopps 			}
    213  1.11  chopps 		}
    214  1.11  chopps 
    215  1.11  chopps #define	R1	(*buf++ = *sci_dma)
    216  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    217  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    218  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    219  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    220  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    221  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    222  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    223  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    224  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    225  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    226  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    227  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    228  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    229  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    230  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    231  1.11  chopps 		R1; R1; R1; R1; R1; R1; R1; R1;
    232  1.11  chopps 		len -= 128;
    233  1.11  chopps 	}
    234  1.11  chopps 
    235  1.11  chopps   	while (len > 0) {
    236  1.11  chopps 		wait = sci_data_wait;
    237  1.11  chopps 		while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
    238  1.11  chopps 		  (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
    239  1.11  chopps 			if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
    240  1.11  chopps 			  || !(*dev->sci_bus_csr & SCI_BUS_BSY)
    241  1.11  chopps 			  || --wait < 0) {
    242  1.11  chopps #ifdef DEBUG
    243  1.11  chopps 				if (sci_debug)
    244  1.11  chopps 					printf("ivsc_dma_in1 fail: l%d i%x w%d\n",
    245  1.11  chopps 					len, csr, wait);
    246  1.11  chopps #endif
    247  1.11  chopps 				*dev->sci_mode &= ~SCI_MODE_DMA;
    248  1.11  chopps 				return 0;
    249  1.11  chopps 			}
    250  1.11  chopps 		}
    251  1.11  chopps 
    252  1.11  chopps 		*buf++ = *sci_dma;
    253  1.11  chopps 		len--;
    254  1.11  chopps 	}
    255  1.11  chopps 
    256  1.11  chopps 	QPRINTF(("ivsc_dma_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
    257  1.11  chopps 	  len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5],
    258  1.11  chopps 	  obp[6], obp[7], obp[8], obp[9]));
    259  1.11  chopps 
    260  1.11  chopps 	*dev->sci_mode &= ~SCI_MODE_DMA;
    261  1.11  chopps 	return 0;
    262   1.2  chopps }
    263   1.2  chopps 
    264   1.2  chopps int
    265   1.2  chopps ivsc_dma_xfer_out (dev, len, buf, phase)
    266   1.2  chopps 	struct sci_softc *dev;
    267   1.2  chopps 	int len;
    268   1.2  chopps 	register u_char *buf;
    269   1.2  chopps 	int phase;
    270   1.1  chopps {
    271  1.11  chopps 	int wait = sci_data_wait;
    272  1.11  chopps 	u_char csr;
    273  1.11  chopps 	u_char *obp = buf;
    274  1.11  chopps 	volatile register u_char *sci_dma = dev->sci_data + 0x20;
    275  1.11  chopps 	volatile register u_char *sci_csr = dev->sci_csr;
    276  1.11  chopps 
    277  1.11  chopps 	QPRINTF(("ivsc_dma_out %d, csr=%02x\n", len, *dev->sci_bus_csr));
    278  1.11  chopps 
    279  1.11  chopps 	QPRINTF(("ivsc_dma_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
    280  1.11  chopps   	 len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
    281  1.11  chopps 	 buf[6], buf[7], buf[8], buf[9]));
    282  1.11  chopps 
    283  1.11  chopps 	*dev->sci_tcmd = phase;
    284  1.11  chopps 	*dev->sci_mode |= SCI_MODE_DMA;
    285  1.11  chopps 	*dev->sci_icmd |= SCI_ICMD_DATA;
    286  1.11  chopps 	*dev->sci_dma_send = 0;
    287  1.11  chopps 	while (len > 0) {
    288  1.11  chopps 		wait = sci_data_wait;
    289  1.11  chopps 		while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) !=
    290  1.11  chopps 		  (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) {
    291  1.11  chopps 			if (!(*sci_csr & SCI_CSR_PHASE_MATCH)
    292  1.11  chopps 			  || !(*dev->sci_bus_csr & SCI_BUS_BSY)
    293  1.11  chopps 			  || --wait < 0) {
    294  1.11  chopps #ifdef DEBUG
    295  1.11  chopps 				if (sci_debug)
    296  1.11  chopps 					printf("ivsc_dma_out fail: l%d i%x w%d\n",
    297  1.11  chopps 					len, csr, wait);
    298  1.11  chopps #endif
    299  1.11  chopps 				*dev->sci_mode &= ~SCI_MODE_DMA;
    300  1.11  chopps 				return 0;
    301  1.11  chopps 			}
    302  1.11  chopps 		}
    303  1.11  chopps 
    304  1.11  chopps 		*sci_dma = *buf++;
    305  1.11  chopps 		len--;
    306  1.11  chopps 	}
    307  1.11  chopps 
    308  1.11  chopps 	wait = sci_data_wait;
    309  1.11  chopps 	while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) ==
    310  1.11  chopps 	  SCI_CSR_PHASE_MATCH && --wait);
    311  1.11  chopps 
    312  1.11  chopps 
    313  1.11  chopps 	*dev->sci_mode &= ~SCI_MODE_DMA;
    314  1.11  chopps 	return 0;
    315   1.1  chopps }
    316   1.2  chopps 
    317   1.2  chopps int
    318   1.9  chopps ivsc_intr(dev)
    319   1.9  chopps 	struct sci_softc *dev;
    320   1.2  chopps {
    321   1.2  chopps 	u_char stat;
    322   1.2  chopps 
    323   1.9  chopps 	if ((*dev->sci_csr & SCI_CSR_INT) == 0)
    324   1.9  chopps 		return(0);
    325   1.9  chopps 	stat = *dev->sci_iack;
    326   1.2  chopps }
    327