1 /* $NetBSD: c_nec_jazz.c,v 1.14 2013/12/16 15:46:57 mrg Exp $ */
2
3 /*-
4 * Copyright (C) 2000 Shuichiro URATA. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /*
30 * for NEC EISA and NEC PCI platforms
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: c_nec_jazz.c,v 1.14 2013/12/16 15:46:57 mrg Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/device.h>
39
40 #include <machine/autoconf.h>
41 #include <machine/pio.h>
42 #include <machine/platform.h>
43
44 #include <dev/isa/isavar.h>
45
46 #include <arc/arc/timervar.h>
47 #include <arc/jazz/rd94.h>
48 #include <arc/jazz/jazziovar.h>
49 #include <arc/jazz/timer_jazziovar.h>
50
51 /*
52 * chipset-dependent timer routine.
53 */
54
55 uint32_t timer_nec_jazz_intr(uint32_t, struct clockframe *);
56 void timer_nec_jazz_init(int);
57
58 struct timer_jazzio_config timer_nec_jazz_conf = {
59 MIPS_INT_MASK_3,
60 timer_nec_jazz_intr,
61 timer_nec_jazz_init,
62 };
63
64 /* handle jazzio bus clock interrupt */
65 uint32_t
timer_nec_jazz_intr(uint32_t mask,struct clockframe * cf)66 timer_nec_jazz_intr(uint32_t mask, struct clockframe *cf)
67 {
68
69 (void)in32(RD94_SYS_INTSTAT3);
70 last_cp0_count = mips3_cp0_count_read();
71 hardclock(cf);
72 timer_jazzio_ev.ev_count++;
73
74 return MIPS_INT_MASK_3; /* Keep clock interrupts enabled */
75 }
76
77 void
timer_nec_jazz_init(int interval)78 timer_nec_jazz_init(int interval)
79 {
80
81 if (interval <= 0)
82 panic("timer_nec_jazz_init: invalid interval %d", interval);
83
84 out32(RD94_SYS_IT_VALUE, interval - 1);
85
86 /* Enable periodic clock interrupt */
87 out32(RD94_SYS_EXT_IMASK, cpu_int_mask);
88 }
89
90 /*
91 * chipset-dependent jazzio bus configuration
92 */
93
94 struct pica_dev nec_rd94_cpu[] = {
95 {{ "timer", -1, 0, }, (void *)RD94_SYS_IT_VALUE, },
96 {{ "dallas_rtc", -1, 0, }, (void *)RD94_SYS_CLOCK, },
97 {{ "LPT1", 0, 0, }, (void *)RD94_SYS_PAR1, },
98 {{ "I82077", 1, 0, }, (void *)RD94_SYS_FLOPPY, },
99 {{ "AD1848", 2, 0, }, (void *)RD94_SYS_SOUND,},
100 {{ "SONIC", 3, 0, }, (void *)RD94_SYS_SONIC, },
101 {{ "NCRC700", 4, 0, }, (void *)RD94_SYS_SCSI0, },
102 {{ "NCRC700", 5, 0, }, (void *)RD94_SYS_SCSI1, },
103 {{ "I8742", 6, 0, }, (void *)RD94_SYS_KBD, },
104 {{ "pms", 7, 0, }, (void *)RD94_SYS_KBD, }, /* XXX */
105 {{ "COM1", 8, 0, }, (void *)RD94_SYS_COM1, },
106 {{ "COM2", 9, 0, }, (void *)RD94_SYS_COM2, },
107 {{ NULL, -1, 0, }, NULL, },
108 };
109
110 void
c_nec_jazz_set_intr(uint32_t mask,uint32_t (* int_hand)(uint32_t,struct clockframe *),int prio)111 c_nec_jazz_set_intr(uint32_t mask,
112 uint32_t (*int_hand)(uint32_t, struct clockframe *), int prio)
113 {
114
115 arc_set_intr(mask, int_hand, prio);
116
117 /* Update external interrupt mask but don't enable clock. */
118 out32(RD94_SYS_EXT_IMASK, cpu_int_mask & (~MIPS_INT_MASK_3 >> 10));
119 }
120
121 /*
122 * common configuration between NEC EISA and PCI platforms
123 */
124 void
c_nec_jazz_init(void)125 c_nec_jazz_init(void)
126 {
127
128 /* chipset-dependent timer configuration */
129 timer_jazzio_conf = &timer_nec_jazz_conf;
130
131 /* chipset-dependent jazzio bus configuration */
132 jazzio_devconfig = nec_rd94_cpu;
133 }
134