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      1 /* $NetBSD: sbscd.c,v 1.20 2021/08/07 16:18:59 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright 2000, 2001
      5  * Broadcom Corporation. All rights reserved.
      6  *
      7  * This software is furnished under license and may be used and copied only
      8  * in accordance with the following terms and conditions.  Subject to these
      9  * conditions, you may download, copy, install, use, modify and distribute
     10  * modified or unmodified copies of this software in source and/or binary
     11  * form. No title or ownership is transferred hereby.
     12  *
     13  * 1) Any source code used, modified or distributed must reproduce and
     14  *    retain this copyright notice and list of conditions as they appear in
     15  *    the source file.
     16  *
     17  * 2) No right is granted to use any trade name, trademark, or logo of
     18  *    Broadcom Corporation.  The "Broadcom Corporation" name may not be
     19  *    used to endorse or promote products derived from this software
     20  *    without the prior written permission of Broadcom Corporation.
     21  *
     22  * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
     23  *    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
     24  *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
     25  *    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
     26  *    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
     27  *    LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  *    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     30  *    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     31  *    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     32  *    OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: sbscd.c,v 1.20 2021/08/07 16:18:59 thorpej Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/device.h>
     40 #include <sys/systm.h>
     41 
     42 #include <mips/sibyte/include/sb1250_int.h>
     43 #include <mips/sibyte/include/sb1250_regs.h>
     44 #include <mips/sibyte/include/sb1250_scd.h>
     45 #include <mips/sibyte/include/zbbusvar.h>
     46 #include <mips/sibyte/dev/sbscdvar.h>
     47 
     48 #include "locators.h"
     49 
     50 static int	sbscd_match(device_t, cfdata_t, void *);
     51 static void	sbscd_attach(device_t, device_t, void *);
     52 
     53 CFATTACH_DECL_NEW(sbscd, 0,
     54     sbscd_match, sbscd_attach, NULL, NULL);
     55 
     56 static int	sbscd_print(void *, const char *);
     57 static const char *sbscd_device_type_name(enum sbscd_device_type type);
     58 
     59 static const struct sbscd_attach_locs sb1250_sbscd_devs[] = {
     60 #if 0
     61 	{ A_IMR_CPU0_BASE,
     62 	  { -1, -1 },
     63 	  SBSCD_DEVTYPE_ICU },
     64 #endif
     65 	{ A_SCD_WDOG_0,
     66 	  { K_INT_WATCHDOG_TIMER_0, -1 },
     67 	  SBSCD_DEVTYPE_WDOG },
     68 	{ A_SCD_WDOG_1,
     69 	  { K_INT_WATCHDOG_TIMER_1, -1 },
     70 	  SBSCD_DEVTYPE_WDOG },
     71 	{ A_SCD_TIMER_0,
     72 	  { K_INT_TIMER_0, -1 },
     73 	  SBSCD_DEVTYPE_TIMER },
     74 	{ A_SCD_TIMER_1,
     75 	  { K_INT_TIMER_1, -1 },
     76 	  SBSCD_DEVTYPE_TIMER },
     77 	{ A_SCD_TIMER_2,
     78 	  { K_INT_TIMER_2, -1 },
     79 	  SBSCD_DEVTYPE_TIMER },
     80 	{ A_SCD_TIMER_3,
     81 	  { K_INT_TIMER_3, -1 },
     82 	  SBSCD_DEVTYPE_TIMER },
     83 	{ A_SCD_JTAG_BASE + 0x1FFA0, 	/* XXX magic number for jtag addr */
     84 	  { -1, -1 },
     85 	  SBSCD_DEVTYPE_JTAGCONS },
     86 	/* XXX others */
     87 };
     88 static const int sb1250_sbscd_dev_count = __arraycount(sb1250_sbscd_devs);
     89 
     90 static int
     91 sbscd_match(device_t parent, cfdata_t match, void *aux)
     92 {
     93 	struct zbbus_attach_args *zap = aux;
     94 
     95 	if (zap->za_locs.za_type != ZBBUS_ENTTYPE_SCD)
     96 		return (0);
     97 
     98 	return 1;
     99 }
    100 
    101 static void
    102 sbscd_attach(device_t parent, device_t self, void *aux)
    103 {
    104 	struct sbscd_attach_args sa;
    105 	int i;
    106 	int locs[SBSCDCF_NLOCS];
    107 
    108 	aprint_normal("\n");
    109 
    110 	for (i = 0; i < sb1250_sbscd_dev_count; i++) {
    111 		memset(&sa, 0, sizeof sa);
    112 		sa.sa_locs = sb1250_sbscd_devs[i];
    113 
    114 		locs[SBSCDCF_OFFSET] = sb1250_sbscd_devs[i].sa_offset;
    115 		locs[SBSCDCF_INTR + 0] =
    116 			sb1250_sbscd_devs[i].sa_intr[0];
    117 		locs[SBSCDCF_INTR + 1] =
    118 			sb1250_sbscd_devs[i].sa_intr[1];
    119 
    120 		config_found(self, &sa, sbscd_print,
    121 		    CFARGS(.submatch = config_stdsubmatch,
    122 			   .locators = locs));
    123 	}
    124 	return;
    125 }
    126 
    127 int
    128 sbscd_print(void *aux, const char *pnp)
    129 {
    130 	struct sbscd_attach_args *sap = aux;
    131 	int i;
    132 
    133 	if (pnp)
    134 		aprint_normal("%s at %s",
    135 		    sbscd_device_type_name(sap->sa_locs.sa_type), pnp);
    136 	aprint_normal(" offset 0x%lx", sap->sa_locs.sa_offset);
    137 	for (i = 0; i < 2; i++) {
    138 		if (sap->sa_locs.sa_intr[i] != -1)
    139 			aprint_normal("%s%d", i == 0 ? " intr " : ",",
    140 			    sap->sa_locs.sa_intr[i]);
    141 	}
    142 	return (UNCONF);
    143 }
    144 
    145 static const char *
    146 sbscd_device_type_name(enum sbscd_device_type type)
    147 {
    148 
    149 	switch (type) {
    150 	case SBSCD_DEVTYPE_ICU:
    151 		return ("sbicu");
    152 	case SBSCD_DEVTYPE_WDOG:
    153 		return ("sbwdog");
    154 	case SBSCD_DEVTYPE_TIMER:
    155 		return ("sbtimer");
    156 	case SBSCD_DEVTYPE_JTAGCONS:
    157 		return ("sbjcn");
    158 
    159 	}
    160 	panic("sbscd_device_type_name");
    161 	return ("panic");
    162 }
    163