src/devices/dev_pcc2.c

/*
 *  Copyright (C) 2007  Anders Gavare.  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. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 *
 *  $Id: dev_pcc2.c,v 1.4 2007/06/15 19:57:33 debug Exp $
 *
 *  COMMENT: PCC2 bus (used in MVME machine)
 *
 *  TODO
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "cpu.h"
#include "device.h"
#include "emul.h"
#include "machine.h"
#include "memory.h"
#include "misc.h"


#include "mvme_pcctworeg.h"


/*  #define     debug fatal  */

struct pcc2_data {
        uint8_t                 pcctwo_reg[PCC2_SIZE];
};


DEVICE_ACCESS(pcc2)
{
        uint64_t idata = 0, odata = 0;
        struct pcc2_data *d = extra;

        if (writeflag == MEM_WRITE)
                idata = memory_readmax64(cpu, data, len);

        if (writeflag == MEM_READ)
                odata = d->pcctwo_reg[relative_addr];

        switch (relative_addr) {

        case PCCTWO_CHIPID:
        case PCCTWO_CHIPREV:
                if (writeflag == MEM_WRITE) {
                        fatal("TODO: write to PCCTWO_CHIPID or CHIPREV?\n");
                        exit(1);
                }
                break;

        case PCCTWO_GENCTL:
        case PCCTWO_VECBASE:
                if (writeflag == MEM_WRITE)
                        d->pcctwo_reg[relative_addr] = idata;
                break;

        case PCCTWO_MASK:
                if (writeflag == MEM_WRITE) {
                        d->pcctwo_reg[relative_addr] = idata;
                        /*  TODO: Re-Assert interrupts!  */
                }
                break;

        default:debug("[ pcc2: unimplemented %s offset 0x%x",
                    writeflag == MEM_WRITE? "write to" : "read from",
                    (int) relative_addr);
                if (writeflag == MEM_WRITE)
                        debug(": 0x%x", (int)idata);
                debug(" ]\n");
                /*  exit(1);  */
        }

        if (writeflag == MEM_READ)
                memory_writemax64(cpu, data, len, odata);

        return 1;
}


DEVINIT(pcc2)
{
        struct pcc2_data *d;

        CHECK_ALLOCATION(d = malloc(sizeof(struct pcc2_data)));
        memset(d, 0, sizeof(struct pcc2_data));

        d->pcctwo_reg[PCCTWO_CHIPID] = PCC2_ID;

        memory_device_register(devinit->machine->memory, "pcc2",
            devinit->addr, PCC2_SIZE, dev_pcc2_access, (void *)d,
            DM_DEFAULT, NULL);

        return 1;
}

1	/*
2	* Copyright (C) 2007 Anders Gavare. All rights reserved.
3	*
4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are met:
6	*
7	* 1. Redistributions of source code must retain the above copyright
8	* notice, this list of conditions and the following disclaimer.
9	* 2. Redistributions in binary form must reproduce the above copyright
10	* notice, this list of conditions and the following disclaimer in the
11	* documentation and/or other materials provided with the distribution.
12	* 3. The name of the author may not be used to endorse or promote products
13	* derived from this software without specific prior written permission.
14	*
15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25	* SUCH DAMAGE.
26	*
27	*
28	* $Id: dev_pcc2.c,v 1.4 2007/06/15 19:57:33 debug Exp $
29	*
30	* COMMENT: PCC2 bus (used in MVME machine)
31	*
32	* TODO
33	*/
34
35	#include <stdio.h>
36	#include <stdlib.h>
37	#include <string.h>
38
39	#include "cpu.h"
40	#include "device.h"
41	#include "emul.h"
42	#include "machine.h"
43	#include "memory.h"
44	#include "misc.h"
45
46
47	#include "mvme_pcctworeg.h"
48
49
50	/* #define debug fatal */
51
52	struct pcc2_data {
53	uint8_t pcctwo_reg[PCC2_SIZE];
54	};
55
56
57	DEVICE_ACCESS(pcc2)
58	{
59	uint64_t idata = 0, odata = 0;
60	struct pcc2_data *d = extra;
61
62	if (writeflag == MEM_WRITE)
63	idata = memory_readmax64(cpu, data, len);
64
65	if (writeflag == MEM_READ)
66	odata = d->pcctwo_reg[relative_addr];
67
68	switch (relative_addr) {
69
70	case PCCTWO_CHIPID:
71	case PCCTWO_CHIPREV:
72	if (writeflag == MEM_WRITE) {
73	fatal("TODO: write to PCCTWO_CHIPID or CHIPREV?\n");
74	exit(1);
75	}
76	break;
77
78	case PCCTWO_GENCTL:
79	case PCCTWO_VECBASE:
80	if (writeflag == MEM_WRITE)
81	d->pcctwo_reg[relative_addr] = idata;
82	break;
83
84	case PCCTWO_MASK:
85	if (writeflag == MEM_WRITE) {
86	d->pcctwo_reg[relative_addr] = idata;
87	/* TODO: Re-Assert interrupts! */
88	}
89	break;
90
91	default:debug("[ pcc2: unimplemented %s offset 0x%x",
92	writeflag == MEM_WRITE? "write to" : "read from",
93	(int) relative_addr);
94	if (writeflag == MEM_WRITE)
95	debug(": 0x%x", (int)idata);
96	debug(" ]\n");
97	/* exit(1); */
98	}
99
100	if (writeflag == MEM_READ)
101	memory_writemax64(cpu, data, len, odata);
102
103	return 1;
104	}
105
106
107	DEVINIT(pcc2)
108	{
109	struct pcc2_data *d;
110
111	CHECK_ALLOCATION(d = malloc(sizeof(struct pcc2_data)));
112	memset(d, 0, sizeof(struct pcc2_data));
113
114	d->pcctwo_reg[PCCTWO_CHIPID] = PCC2_ID;
115
116	memory_device_register(devinit->machine->memory, "pcc2",
117	devinit->addr, PCC2_SIZE, dev_pcc2_access, (void *)d,
118	DM_DEFAULT, NULL);
119
120	return 1;
121	}
122