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maple.c revision 1.6
      1  1.6   marcus /*	$NetBSD: maple.c,v 1.6 2001/03/16 19:57:49 marcus Exp $	*/
      2  1.1   marcus 
      3  1.3   marcus /*-
      4  1.1   marcus  * Copyright (c) 2001 Marcus Comstedt
      5  1.1   marcus  * All rights reserved.
      6  1.1   marcus  *
      7  1.1   marcus  * Redistribution and use in source and binary forms, with or without
      8  1.1   marcus  * modification, are permitted provided that the following conditions
      9  1.1   marcus  * are met:
     10  1.1   marcus  * 1. Redistributions of source code must retain the above copyright
     11  1.1   marcus  *    notice, this list of conditions and the following disclaimer.
     12  1.1   marcus  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1   marcus  *    notice, this list of conditions and the following disclaimer in the
     14  1.1   marcus  *    documentation and/or other materials provided with the distribution.
     15  1.1   marcus  * 3. All advertising materials mentioning features or use of this software
     16  1.1   marcus  *    must display the following acknowledgement:
     17  1.3   marcus  *	This product includes software developed by Marcus Comstedt.
     18  1.3   marcus  * 4. Neither the name of The NetBSD Foundation nor the names of its
     19  1.3   marcus  *    contributors may be used to endorse or promote products derived
     20  1.3   marcus  *    from this software without specific prior written permission.
     21  1.1   marcus  *
     22  1.3   marcus  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  1.3   marcus  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  1.3   marcus  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  1.3   marcus  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  1.3   marcus  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  1.3   marcus  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  1.3   marcus  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  1.3   marcus  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  1.3   marcus  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  1.3   marcus  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  1.3   marcus  * POSSIBILITY OF SUCH DAMAGE.
     33  1.1   marcus  */
     34  1.1   marcus 
     35  1.1   marcus #include <sys/param.h>
     36  1.1   marcus #include <sys/device.h>
     37  1.1   marcus #include <sys/fcntl.h>
     38  1.1   marcus #include <sys/poll.h>
     39  1.1   marcus #include <sys/select.h>
     40  1.1   marcus #include <sys/proc.h>
     41  1.1   marcus #include <sys/signalvar.h>
     42  1.1   marcus #include <sys/systm.h>
     43  1.1   marcus 
     44  1.1   marcus #include <uvm/uvm_extern.h>
     45  1.1   marcus 
     46  1.1   marcus #include <machine/cpu.h>
     47  1.1   marcus #include <machine/bus.h>
     48  1.1   marcus #include <sh3/shbvar.h>
     49  1.1   marcus #include <sh3/pmap.h>
     50  1.1   marcus 
     51  1.1   marcus 
     52  1.1   marcus #include <dreamcast/dev/maple/maple.h>
     53  1.1   marcus #include <dreamcast/dev/maple/mapleconf.h>
     54  1.1   marcus #include <dreamcast/dev/maple/maplevar.h>
     55  1.1   marcus #include <dreamcast/dev/maple/maplereg.h>
     56  1.1   marcus 
     57  1.1   marcus 
     58  1.5   marcus #define MAPLE_CALLOUT_TICKS 2
     59  1.1   marcus 
     60  1.1   marcus /*
     61  1.1   marcus  * Function declarations.
     62  1.1   marcus  */
     63  1.1   marcus static int	maplematch __P((struct device *, struct cfdata *, void *));
     64  1.1   marcus static void	mapleattach __P((struct device *, struct device *, void *));
     65  1.1   marcus static int	mapleprint __P((void *, const char *));
     66  1.4  thorpej static int	maplesubmatch __P((struct device *, struct cfdata *, void *));
     67  1.1   marcus static void	maple_attach_dev __P((struct maple_softc *, int, int));
     68  1.1   marcus static void	maple_begin_txbuf __P((struct maple_softc *));
     69  1.1   marcus static int	maple_end_txbuf __P((struct maple_softc *));
     70  1.1   marcus static void	maple_write_command __P((struct maple_softc *, int, int,
     71  1.1   marcus 					 int, int, void *));
     72  1.1   marcus static void	maple_scanbus __P((struct maple_softc *));
     73  1.1   marcus static void	maple_callout __P((void *));
     74  1.1   marcus static void	maple_send_commands __P((struct maple_softc *));
     75  1.1   marcus static void	maple_check_responses __P((struct maple_softc *));
     76  1.1   marcus 
     77  1.2   marcus int maple_alloc_dma __P((size_t, vaddr_t *, paddr_t *));
     78  1.2   marcus void maple_free_dma __P((paddr_t, size_t));
     79  1.2   marcus 
     80  1.1   marcus 
     81  1.1   marcus /*
     82  1.1   marcus  * Global variables.
     83  1.1   marcus  */
     84  1.1   marcus int	maple_polling = 0;	/* Are we polling?  (Debugger mode) */
     85  1.1   marcus 
     86  1.1   marcus /*
     87  1.1   marcus  * Driver definition.
     88  1.1   marcus  */
     89  1.1   marcus struct cfattach maple_ca = {
     90  1.1   marcus 	sizeof(struct maple_softc), maplematch, mapleattach
     91  1.1   marcus };
     92  1.1   marcus 
     93  1.1   marcus static int
     94  1.1   marcus maplematch(parent, cf, aux)
     95  1.1   marcus 	struct device *parent;
     96  1.1   marcus 	struct cfdata *cf;
     97  1.1   marcus 	void *aux;
     98  1.1   marcus {
     99  1.1   marcus 	struct shb_attach_args *sa = aux;
    100  1.1   marcus 
    101  1.1   marcus 	if (strcmp("maple", cf->cf_driver->cd_name))
    102  1.1   marcus 	  return (0);
    103  1.1   marcus 
    104  1.1   marcus 	sa->ia_iosize = 0 /* 0x100 */;
    105  1.1   marcus 	return (1);
    106  1.1   marcus }
    107  1.1   marcus 
    108  1.1   marcus static void
    109  1.1   marcus maple_attach_dev(sc, port, subunit)
    110  1.1   marcus 	struct maple_softc *sc;
    111  1.1   marcus 	int port;
    112  1.1   marcus 	int subunit;
    113  1.1   marcus {
    114  1.1   marcus 	struct maple_attach_args ma;
    115  1.4  thorpej 
    116  1.1   marcus 	ma.ma_port = port;
    117  1.1   marcus 	ma.ma_subunit = subunit;
    118  1.1   marcus 	ma.ma_devinfo = &sc->sc_unit[port][subunit].devinfo;
    119  1.4  thorpej 
    120  1.4  thorpej 	(void) config_found_sm(&sc->sc_dev, &ma, mapleprint, maplesubmatch);
    121  1.1   marcus }
    122  1.1   marcus 
    123  1.1   marcus static void
    124  1.1   marcus maple_begin_txbuf(sc)
    125  1.1   marcus 	struct maple_softc *sc;
    126  1.1   marcus {
    127  1.1   marcus 	sc->sc_txlink = sc->sc_txpos = sc->sc_txbuf;
    128  1.1   marcus }
    129  1.1   marcus 
    130  1.1   marcus static int
    131  1.1   marcus maple_end_txbuf(sc)
    132  1.1   marcus 	struct maple_softc *sc;
    133  1.1   marcus {
    134  1.1   marcus 	/* if no frame have been written, we can't mark the
    135  1.1   marcus 	   list end, and so the DMA must not be activated   */
    136  1.1   marcus   	if (sc->sc_txpos == sc->sc_txbuf)
    137  1.1   marcus 	  return (0);
    138  1.1   marcus 
    139  1.1   marcus 	*sc->sc_txlink |= 0x80000000;
    140  1.1   marcus 
    141  1.1   marcus 	return (1);
    142  1.1   marcus }
    143  1.1   marcus 
    144  1.1   marcus static int8_t subunit_code[] = { 0x20, 0x01, 0x02, 0x04, 0x08, 0x10 };
    145  1.1   marcus 
    146  1.1   marcus static void
    147  1.1   marcus maple_write_command(sc, port, subunit, command, datalen, dataaddr)
    148  1.1   marcus 	struct maple_softc *sc;
    149  1.1   marcus 	int port;
    150  1.1   marcus 	int subunit;
    151  1.1   marcus 	int command;
    152  1.1   marcus 	int datalen;
    153  1.1   marcus 	void *dataaddr;
    154  1.1   marcus {
    155  1.1   marcus 	int to, from;
    156  1.1   marcus 	u_int32_t *p = sc->sc_txpos;
    157  1.1   marcus 
    158  1.1   marcus 	if ((port & ~(MAPLE_PORTS-1)) != 0 ||
    159  1.1   marcus 	    subunit < 0 || subunit >= MAPLE_SUBUNITS)
    160  1.1   marcus 	  return;
    161  1.1   marcus 
    162  1.1   marcus 	/* Compute sender and recipient address */
    163  1.1   marcus 	from = port << 6;
    164  1.1   marcus 	to = from | subunit_code[subunit];
    165  1.1   marcus 
    166  1.1   marcus 	/* Max data length = 255 longs = 1020 bytes */
    167  1.1   marcus 	if(datalen > 255)
    168  1.1   marcus 	  datalen = 255;
    169  1.1   marcus 	else if(datalen < 0)
    170  1.1   marcus 	  datalen = 0;
    171  1.1   marcus 
    172  1.1   marcus 	sc->sc_txlink = p;
    173  1.1   marcus 
    174  1.1   marcus 	/* Set length of packet and destination port (A-D) */
    175  1.1   marcus 	*p++ = datalen | (port << 16);
    176  1.1   marcus 
    177  1.1   marcus 	/* Write address to receive buffer where the response
    178  1.1   marcus 	   frame should be put */
    179  1.1   marcus 	*p++ = sc->sc_rxbuf_phys[port][subunit];
    180  1.1   marcus 
    181  1.1   marcus 	/* Create the frame header.  The fields are assembled "backwards"
    182  1.1   marcus 	   because of the Maple Bus big-endianness.                       */
    183  1.1   marcus 	*p++ = (command & 0xff) | (to << 8) | (from << 16) | (datalen << 24);
    184  1.1   marcus 
    185  1.1   marcus 	/* Copy parameter data, if any */
    186  1.1   marcus 	if (datalen > 0) {
    187  1.1   marcus 	  u_int32_t *param = dataaddr;
    188  1.1   marcus 	  int i;
    189  1.1   marcus 	  for (i = 0; i < datalen; i++)
    190  1.1   marcus 	    *p++ = *param++;
    191  1.1   marcus 	}
    192  1.1   marcus 
    193  1.1   marcus 	sc->sc_txpos = p;
    194  1.1   marcus }
    195  1.1   marcus 
    196  1.1   marcus static void
    197  1.1   marcus maple_scanbus(sc)
    198  1.1   marcus 	struct maple_softc *sc;
    199  1.1   marcus {
    200  1.5   marcus 	int p, s;
    201  1.1   marcus 
    202  1.1   marcus 	maple_polling = 1;
    203  1.1   marcus 
    204  1.1   marcus 	maple_begin_txbuf(sc);
    205  1.1   marcus 
    206  1.1   marcus 	for (p = 0; p < MAPLE_PORTS; p++) {
    207  1.1   marcus 	  maple_write_command(sc, p, 0, MAPLE_COMMAND_DEVINFO, 0, NULL);
    208  1.1   marcus 	}
    209  1.1   marcus 
    210  1.1   marcus 	if (maple_end_txbuf(sc)) {
    211  1.1   marcus 
    212  1.1   marcus 	  MAPLE_DMAADDR = sc->sc_txbuf_phys;
    213  1.1   marcus 	  MAPLE_STATE = 1;
    214  1.1   marcus 	  while (MAPLE_STATE != 0)
    215  1.1   marcus 	    ;
    216  1.1   marcus 
    217  1.1   marcus 	  for (p = 0; p < MAPLE_PORTS; p++)
    218  1.5   marcus 	    if ((sc->sc_rxbuf[p][0][0] & 0xff) == MAPLE_RESPONSE_DEVINFO)
    219  1.1   marcus 
    220  1.6   marcus 	      sc->sc_port_units[p] = ((sc->sc_rxbuf[p][0][0]>>15)&0x3e)|1;
    221  1.1   marcus 
    222  1.5   marcus 	    else
    223  1.1   marcus 
    224  1.5   marcus 	      sc->sc_port_units[p] = 0;
    225  1.1   marcus 
    226  1.5   marcus 
    227  1.5   marcus 	  maple_begin_txbuf(sc);
    228  1.5   marcus 
    229  1.5   marcus 	  for (p = 0; p < MAPLE_PORTS; p++) {
    230  1.5   marcus 	    for (s = 0; s < MAPLE_SUBUNITS; s++) {
    231  1.5   marcus 	      if (sc->sc_port_units[p] & (1<<s))
    232  1.5   marcus 		maple_write_command(sc, p, s, MAPLE_COMMAND_DEVINFO, 0, NULL);
    233  1.1   marcus 	    }
    234  1.5   marcus 	  }
    235  1.5   marcus 
    236  1.5   marcus 	  if (maple_end_txbuf(sc)) {
    237  1.5   marcus 
    238  1.5   marcus 	    MAPLE_DMAADDR = sc->sc_txbuf_phys;
    239  1.5   marcus 	    MAPLE_STATE = 1;
    240  1.5   marcus 	    while (MAPLE_STATE != 0)
    241  1.5   marcus 	      ;
    242  1.5   marcus 
    243  1.5   marcus 	    for (p = 0; p < MAPLE_PORTS; p++)
    244  1.5   marcus 	      for (s = 0; s < MAPLE_SUBUNITS; s++)
    245  1.5   marcus 		if (sc->sc_port_units[p] & (1<<s)) {
    246  1.5   marcus 
    247  1.5   marcus 		  if ((sc->sc_rxbuf[p][s][0] & 0xff) ==
    248  1.5   marcus 		      MAPLE_RESPONSE_DEVINFO) {
    249  1.5   marcus 
    250  1.5   marcus 		    u_int32_t *to_swap;
    251  1.5   marcus 		    int i;
    252  1.5   marcus 
    253  1.5   marcus 		    bcopy(sc->sc_rxbuf[p][s]+1,
    254  1.5   marcus 			  (to_swap = &sc->sc_unit[p][s].devinfo.di_func),
    255  1.5   marcus 			  sizeof(struct maple_devinfo));
    256  1.5   marcus 
    257  1.5   marcus 		    for (i = 0; i < 4; i++, to_swap++)
    258  1.5   marcus 		      *to_swap = ntohl(*to_swap);
    259  1.5   marcus 
    260  1.5   marcus 		    maple_attach_dev(sc, p, s);
    261  1.5   marcus 
    262  1.5   marcus 		  } else {
    263  1.5   marcus 
    264  1.5   marcus 		    printf("%s: no response from port %d subunit %d\n",
    265  1.5   marcus 			   sc->sc_dev.dv_xname, p, s);
    266  1.5   marcus 		  }
    267  1.5   marcus 		}
    268  1.5   marcus 
    269  1.5   marcus 	  }
    270  1.1   marcus 
    271  1.1   marcus 	}
    272  1.1   marcus 
    273  1.1   marcus 	maple_polling = 0;
    274  1.1   marcus 
    275  1.1   marcus }
    276  1.1   marcus 
    277  1.1   marcus static void
    278  1.1   marcus maple_send_commands(sc)
    279  1.1   marcus 	struct maple_softc *sc;
    280  1.1   marcus {
    281  1.5   marcus 	int p, s;
    282  1.1   marcus 
    283  1.1   marcus 	if (sc->maple_commands_pending || MAPLE_STATE != 0)
    284  1.1   marcus 	  return;
    285  1.1   marcus 
    286  1.1   marcus 	maple_begin_txbuf(sc);
    287  1.1   marcus 
    288  1.1   marcus 	for (p = 0; p < MAPLE_PORTS; p++) {
    289  1.1   marcus 
    290  1.5   marcus 	  for (s = 0; s < MAPLE_SUBUNITS; s++) {
    291  1.5   marcus 
    292  1.5   marcus 	    if (sc->sc_unit[p][s].getcond_callback != NULL) {
    293  1.1   marcus 
    294  1.5   marcus 	      u_int32_t func = ntohl(sc->sc_unit[p][s].getcond_func);
    295  1.5   marcus 
    296  1.5   marcus 	      maple_write_command(sc, p, s, MAPLE_COMMAND_GETCOND, 1, &func);
    297  1.1   marcus 
    298  1.5   marcus 	    }
    299  1.1   marcus 
    300  1.1   marcus 	  }
    301  1.1   marcus 
    302  1.1   marcus 	}
    303  1.1   marcus 
    304  1.1   marcus 	if (!maple_end_txbuf(sc))
    305  1.1   marcus 	  return;
    306  1.1   marcus 
    307  1.1   marcus 	MAPLE_DMAADDR = sc->sc_txbuf_phys;
    308  1.1   marcus 	MAPLE_STATE = 1;
    309  1.1   marcus 
    310  1.1   marcus 	sc->maple_commands_pending = 1;
    311  1.1   marcus }
    312  1.1   marcus 
    313  1.1   marcus static void
    314  1.1   marcus maple_check_responses(sc)
    315  1.1   marcus 	struct maple_softc *sc;
    316  1.1   marcus {
    317  1.5   marcus 	int p, s;
    318  1.1   marcus 
    319  1.1   marcus 	if (!sc->maple_commands_pending || MAPLE_STATE != 0)
    320  1.1   marcus 	  return;
    321  1.1   marcus 
    322  1.1   marcus 	for (p = 0; p < MAPLE_PORTS; p++) {
    323  1.5   marcus 	  for (s = 0; s < MAPLE_SUBUNITS; s++) {
    324  1.5   marcus 	    struct maple_unit * u = &sc->sc_unit[p][s];
    325  1.5   marcus 	    if (u->getcond_callback != NULL &&
    326  1.5   marcus 		(sc->sc_rxbuf[p][s][0] & 0xff) == MAPLE_RESPONSE_DATATRF &&
    327  1.5   marcus 		(sc->sc_rxbuf[p][s][0]>>24) >= 1 &&
    328  1.5   marcus 		htonl(sc->sc_rxbuf[p][s][1]) == u->getcond_func) {
    329  1.5   marcus 	      (*u->getcond_callback)(u->getcond_data,
    330  1.5   marcus 				     (void *)(sc->sc_rxbuf[p][s]+2),
    331  1.5   marcus 				     ((sc->sc_rxbuf[p][s][0]>>22)&1020)-4);
    332  1.5   marcus 	    }
    333  1.1   marcus 	  }
    334  1.1   marcus 	}
    335  1.1   marcus 
    336  1.1   marcus 	sc->maple_commands_pending = 0;
    337  1.1   marcus }
    338  1.1   marcus 
    339  1.1   marcus void
    340  1.1   marcus maple_run_polling(dev)
    341  1.1   marcus 	struct device *dev;
    342  1.1   marcus {
    343  1.1   marcus 	struct maple_softc *sc;
    344  1.1   marcus 
    345  1.1   marcus 	sc = (struct maple_softc *)dev;
    346  1.1   marcus 
    347  1.1   marcus 	if (MAPLE_STATE != 0)
    348  1.1   marcus 	  return;
    349  1.1   marcus 
    350  1.1   marcus 	maple_send_commands(sc);
    351  1.1   marcus 
    352  1.1   marcus 	while (MAPLE_STATE != 0)
    353  1.1   marcus 	  ;
    354  1.1   marcus 
    355  1.1   marcus 	maple_check_responses(sc);
    356  1.1   marcus }
    357  1.1   marcus 
    358  1.1   marcus void
    359  1.1   marcus maple_set_condition_callback(dev, port, subunit, func, callback, data)
    360  1.1   marcus 	struct device *dev;
    361  1.1   marcus 	int port;
    362  1.1   marcus 	int subunit;
    363  1.1   marcus 	u_int32_t func;
    364  1.1   marcus 	void (*callback)(void *, void *, int);
    365  1.1   marcus 	void *data;
    366  1.1   marcus {
    367  1.1   marcus 	struct maple_softc *sc;
    368  1.1   marcus 
    369  1.1   marcus 	sc = (struct maple_softc *)dev;
    370  1.1   marcus 
    371  1.1   marcus 	if ((port & ~(MAPLE_PORTS-1)) != 0 ||
    372  1.1   marcus 	    subunit < 0 || subunit >= MAPLE_SUBUNITS)
    373  1.1   marcus 	  return;
    374  1.1   marcus 
    375  1.1   marcus 	sc->sc_unit[port][subunit].getcond_func = func;
    376  1.1   marcus 	sc->sc_unit[port][subunit].getcond_callback = callback;
    377  1.1   marcus 	sc->sc_unit[port][subunit].getcond_data = data;
    378  1.1   marcus }
    379  1.1   marcus 
    380  1.1   marcus static void
    381  1.1   marcus maple_callout(ctx)
    382  1.1   marcus 	void *ctx;
    383  1.1   marcus {
    384  1.1   marcus 	struct maple_softc *sc = ctx;
    385  1.1   marcus 
    386  1.1   marcus 	if(!maple_polling) {
    387  1.1   marcus 
    388  1.1   marcus 	  maple_check_responses(sc);
    389  1.1   marcus 
    390  1.1   marcus 	  maple_send_commands(sc);
    391  1.1   marcus 
    392  1.1   marcus 	}
    393  1.1   marcus 
    394  1.1   marcus 	callout_reset(&sc->maple_callout_ch, MAPLE_CALLOUT_TICKS,
    395  1.1   marcus 		      (void *)maple_callout, sc);
    396  1.1   marcus }
    397  1.1   marcus 
    398  1.2   marcus int
    399  1.2   marcus maple_alloc_dma(size, vap, pap)
    400  1.2   marcus 	size_t size;
    401  1.2   marcus 	vaddr_t *vap;
    402  1.2   marcus 	paddr_t *pap;
    403  1.2   marcus {
    404  1.2   marcus 	extern paddr_t avail_start, avail_end;	/* from pmap.c */
    405  1.2   marcus 
    406  1.2   marcus 	struct pglist mlist;
    407  1.2   marcus 	vm_page_t m;
    408  1.2   marcus 	int error;
    409  1.2   marcus 
    410  1.2   marcus 	size = round_page(size);
    411  1.2   marcus 
    412  1.2   marcus 	TAILQ_INIT(&mlist);
    413  1.2   marcus 	error = uvm_pglistalloc(size, avail_start, avail_end - PAGE_SIZE,
    414  1.2   marcus 	    0, 0, &mlist, 1, 0);
    415  1.2   marcus 	if (error)
    416  1.2   marcus 		return (error);
    417  1.2   marcus 
    418  1.2   marcus 	m = TAILQ_FIRST(&mlist);
    419  1.2   marcus 	*pap = VM_PAGE_TO_PHYS(m);
    420  1.2   marcus 	*vap = SH3_PHYS_TO_P2SEG(VM_PAGE_TO_PHYS(m));
    421  1.2   marcus 
    422  1.2   marcus 	return (0);
    423  1.2   marcus }
    424  1.2   marcus 
    425  1.2   marcus void
    426  1.2   marcus maple_free_dma(paddr, size)
    427  1.2   marcus 	paddr_t paddr;
    428  1.2   marcus 	size_t size;
    429  1.2   marcus {
    430  1.2   marcus 	struct pglist mlist;
    431  1.2   marcus 	vm_page_t m;
    432  1.2   marcus 	bus_addr_t addr;
    433  1.2   marcus 
    434  1.2   marcus 	TAILQ_INIT(&mlist);
    435  1.2   marcus 	for (addr = paddr; addr < paddr + size; addr += PAGE_SIZE) {
    436  1.2   marcus 		m = PHYS_TO_VM_PAGE(addr);
    437  1.2   marcus 		TAILQ_INSERT_TAIL(&mlist, m, pageq);
    438  1.2   marcus 	}
    439  1.2   marcus 	uvm_pglistfree(&mlist);
    440  1.2   marcus }
    441  1.2   marcus 
    442  1.1   marcus static void
    443  1.1   marcus mapleattach(parent, self, aux)
    444  1.1   marcus 	struct device *parent, *self;
    445  1.1   marcus 	void *aux;
    446  1.1   marcus {
    447  1.1   marcus 	struct maple_softc *sc;
    448  1.1   marcus 	vaddr_t dmabuffer;
    449  1.2   marcus 	paddr_t dmabuffer_phys;
    450  1.1   marcus 	u_int32_t *p;
    451  1.1   marcus 	int i, j;
    452  1.1   marcus 
    453  1.1   marcus 	sc = (struct maple_softc *)self;
    454  1.1   marcus 
    455  1.1   marcus 	printf("\n");
    456  1.1   marcus 
    457  1.2   marcus 	if (maple_alloc_dma(MAPLE_DMABUF_SIZE, &dmabuffer, &dmabuffer_phys)) {
    458  1.2   marcus 	  printf("%s: unable to allocate DMA buffers.\n", sc->sc_dev.dv_xname);
    459  1.2   marcus 	  return;
    460  1.2   marcus 	}
    461  1.1   marcus 
    462  1.2   marcus 	p = (u_int32_t *) dmabuffer;
    463  1.1   marcus 
    464  1.1   marcus 	for (i = 0; i < MAPLE_PORTS; i++)
    465  1.1   marcus 	  for (j = 0; j < MAPLE_SUBUNITS; j++) {
    466  1.1   marcus 
    467  1.1   marcus 	    sc->sc_rxbuf[i][j] = p;
    468  1.1   marcus 	    sc->sc_rxbuf_phys[i][j] = SH3_P2SEG_TO_PHYS(p);
    469  1.1   marcus 	    p += 256;
    470  1.1   marcus 
    471  1.1   marcus 	  }
    472  1.1   marcus 
    473  1.1   marcus 	sc->sc_txbuf = p;
    474  1.1   marcus 	sc->sc_txbuf_phys = SH3_P2SEG_TO_PHYS(p);
    475  1.1   marcus 
    476  1.1   marcus 	sc->maple_commands_pending = 0;
    477  1.1   marcus 
    478  1.1   marcus 	MAPLE_RESET = RESET_MAGIC;
    479  1.1   marcus 	MAPLE_RESET2 = 0;
    480  1.1   marcus 
    481  1.1   marcus 	MAPLE_SPEED = SPEED_2MBPS | TIMEOUT(50000);
    482  1.1   marcus 
    483  1.1   marcus 	MAPLE_ENABLE = 1;
    484  1.1   marcus 
    485  1.1   marcus 	maple_scanbus(sc);
    486  1.1   marcus 
    487  1.1   marcus 	bzero(&sc->maple_callout_ch, sizeof(sc->maple_callout_ch));
    488  1.1   marcus 
    489  1.1   marcus 	callout_reset(&sc->maple_callout_ch, MAPLE_CALLOUT_TICKS,
    490  1.1   marcus 		      (void *)maple_callout, sc);
    491  1.1   marcus }
    492  1.1   marcus 
    493  1.1   marcus int
    494  1.1   marcus mapleprint(aux, pnp)
    495  1.1   marcus 	void *aux;
    496  1.1   marcus 	const char *pnp;
    497  1.1   marcus {
    498  1.1   marcus 	struct maple_attach_args *ma = aux;
    499  1.1   marcus 
    500  1.1   marcus 	if (pnp != NULL)
    501  1.4  thorpej 		printf("%.*s at %s",
    502  1.4  thorpej 		    (int)sizeof(ma->ma_devinfo->di_product_name),
    503  1.4  thorpej 		    ma->ma_devinfo->di_product_name, pnp);
    504  1.1   marcus 
    505  1.4  thorpej 	printf(" port %d", ma->ma_port);
    506  1.1   marcus 
    507  1.1   marcus 	if (ma->ma_subunit != 0)
    508  1.4  thorpej 		printf(" subunit %d", ma->ma_subunit);
    509  1.1   marcus 
    510  1.1   marcus 	return (UNCONF);
    511  1.1   marcus }
    512  1.1   marcus 
    513  1.4  thorpej static int
    514  1.4  thorpej maplesubmatch(parent, match, aux)
    515  1.1   marcus 	struct device *parent;
    516  1.4  thorpej 	struct cfdata *match;
    517  1.1   marcus 	void *aux;
    518  1.1   marcus {
    519  1.4  thorpej 	struct maple_attach_args *ma = aux;
    520  1.1   marcus 
    521  1.4  thorpej 	if (match->cf_loc[MAPLECF_PORT] != MAPLECF_PORT_DEFAULT &&
    522  1.4  thorpej 	    match->cf_loc[MAPLECF_PORT] != ma->ma_port)
    523  1.4  thorpej 		return (0);
    524  1.4  thorpej 
    525  1.4  thorpej 	if (match->cf_loc[MAPLECF_SUBUNIT] != MAPLECF_SUBUNIT_DEFAULT &&
    526  1.4  thorpej 	    match->cf_loc[MAPLECF_SUBUNIT] != ma->ma_subunit)
    527  1.4  thorpej 		return (0);
    528  1.4  thorpej 
    529  1.4  thorpej 	return ((*match->cf_attach->ca_match)(parent, match, aux));
    530  1.1   marcus }
    531  1.1   marcus 
    532  1.1   marcus u_int32_t
    533  1.1   marcus maple_get_function_data(devinfo, function_code)
    534  1.1   marcus 	struct maple_devinfo *devinfo;
    535  1.1   marcus 	u_int32_t function_code;
    536  1.1   marcus {
    537  1.1   marcus 	int i, p = 0;
    538  1.1   marcus 
    539  1.1   marcus 	for (i = 31; i >= 0; --i)
    540  1.1   marcus 	  if (devinfo->di_func & (1U<<i))
    541  1.1   marcus 	    if (function_code & (1U<<i))
    542  1.1   marcus 	      return devinfo->di_function_data[p];
    543  1.1   marcus 	    else
    544  1.1   marcus 	      if (++p >= 3)
    545  1.1   marcus 		break;
    546  1.1   marcus 	return (0);
    547  1.1   marcus }
    548