src/devices/dev_kn220.c

/*
 *  Copyright (C) 2004-2005  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_kn220.c,v 1.3 2005/02/21 07:01:08 debug Exp $
 *  
 *  DEC KN220 (DECsystem 5500) devices.
 *
 *      o)  I/O board
 *      o)  SGEC (ethernet)  (Called "ne" in Ultrix.)
 *
 *  TODO:  Study docs.
 */

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

#include "devices.h"
#include "memory.h"
#include "misc.h"

#define IOBOARD_DEBUG

struct dec5500_ioboard_data {
        int     dummy;
};

#define SGEC_DEBUG

struct sgec_data {
        int     irq_nr;
};


/*
 *  dev_dec5500_ioboard_access():
 */
int dev_dec5500_ioboard_access(struct cpu *cpu, struct memory *mem,
        uint64_t relative_addr, unsigned char *data, size_t len,
        int writeflag, void *extra)
{
        /*  struct dec5500_ioboard_data *d =
            (struct dec5500_ioboard_data *) extra;  */
        uint64_t idata = 0, odata = 0;

        idata = memory_readmax64(cpu, data, len);

#ifdef IOBOARD_DEBUG
        if (writeflag == MEM_WRITE)
                debug("[ dec5500_ioboard: write to address 0x%llx, "
                    "data=0x%016llx ]\n", (long long)relative_addr,
                    (long long)idata);
        else
                debug("[ dec5500_ioboard: read from address 0x%llx ]\n",
                    (long long)relative_addr);
#endif

        switch (relative_addr) {
        case 0:
                if (writeflag == MEM_READ)
                        /*
                         *  TODO:  One of these bits indicate I/O board
                         *  present.
                         */
                        odata = 0xffffffffULL;
                break;

        default:
                if (writeflag == MEM_WRITE)
                        debug("[ dec5500_ioboard: unimplemented write to "
                            "address 0x%llx, data=0x%016llx ]\n",
                            (long long)relative_addr, (long long)idata);
                else
                        debug("[ dec5500_ioboard: unimplemented read from"
                            " address 0x%llx ]\n", (long long)relative_addr);
        }

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

        return 1;
}


/*
 *  dev_sgec_access():
 */
int dev_sgec_access(struct cpu *cpu, struct memory *mem,
        uint64_t relative_addr, unsigned char *data, size_t len,
        int writeflag, void *extra)
{
        /*  struct sgec_data *d = (struct sgec_data *) extra;  */
        uint64_t idata = 0, odata = 0;

        idata = memory_readmax64(cpu, data, len);

#ifdef SGEC_DEBUG
        if (writeflag == MEM_WRITE)
                debug("[ sgec: write to address 0x%llx, data=0x%016llx ]\n",
                    (long long)relative_addr, (long long)idata);
        else
                debug("[ sgec: read from address 0x%llx ]\n",
                    (long long)relative_addr);
#endif

        switch (relative_addr) {
        case 0x14:
                if (writeflag == MEM_READ)
                        odata = 0x80000000;
                break;

        default:
                if (writeflag == MEM_WRITE)
                        debug("[ sgec: unimplemented write to address 0x%llx,"
                            " data=0x%016llx ]\n", (long long)relative_addr,
                            (long long)idata);
                else
                        debug("[ sgec: unimplemented read from address "
                            "0x%llx ]\n", (long long)relative_addr);
        }

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

        return 1;
}


/*
 *  dev_sgec_init():
 */
void dev_sgec_init(struct memory *mem, uint64_t baseaddr, int irq_nr)
{
        struct sgec_data *d = malloc(sizeof(struct sgec_data));
        if (d == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        memset(d, 0, sizeof(struct sgec_data));
        d->irq_nr = irq_nr;

        memory_device_register(mem, "sgec", baseaddr, DEV_SGEC_LENGTH,
            dev_sgec_access, (void *)d, MEM_DEFAULT, NULL);
}


/*
 *  dev_dec5500_ioboard_init():
 */
struct dec5500_ioboard_data *dev_dec5500_ioboard_init(struct cpu *cpu,
        struct memory *mem, uint64_t baseaddr)
{
        struct dec5500_ioboard_data *d =
            malloc(sizeof(struct dec5500_ioboard_data));
        if (d == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        memset(d, 0, sizeof(struct dec5500_ioboard_data));

        memory_device_register(mem, "dec5500_ioboard", baseaddr,
            DEV_DEC5500_IOBOARD_LENGTH, dev_dec5500_ioboard_access,
            (void *)d, MEM_DEFAULT, NULL);

        return d;
}

1	/*
2	* Copyright (C) 2004-2005 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_kn220.c,v 1.3 2005/02/21 07:01:08 debug Exp $
29	*
30	* DEC KN220 (DECsystem 5500) devices.
31	*
32	* o) I/O board
33	* o) SGEC (ethernet) (Called "ne" in Ultrix.)
34	*
35	* TODO: Study docs.
36	*/
37
38	#include <stdio.h>
39	#include <stdlib.h>
40	#include <string.h>
41
42	#include "devices.h"
43	#include "memory.h"
44	#include "misc.h"
45
46	#define IOBOARD_DEBUG
47
48	struct dec5500_ioboard_data {
49	int dummy;
50	};
51
52	#define SGEC_DEBUG
53
54	struct sgec_data {
55	int irq_nr;
56	};
57
58
59	/*
60	* dev_dec5500_ioboard_access():
61	*/
62	int dev_dec5500_ioboard_access(struct cpu cpu, struct memory mem,
63	uint64_t relative_addr, unsigned char *data, size_t len,
64	int writeflag, void *extra)
65	{
66	/* struct dec5500_ioboard_data *d =
67	(struct dec5500_ioboard_data ) extra; /
68	uint64_t idata = 0, odata = 0;
69
70	idata = memory_readmax64(cpu, data, len);
71
72	#ifdef IOBOARD_DEBUG
73	if (writeflag == MEM_WRITE)
74	debug("[ dec5500_ioboard: write to address 0x%llx, "
75	"data=0x%016llx ]\n", (long long)relative_addr,
76	(long long)idata);
77	else
78	debug("[ dec5500_ioboard: read from address 0x%llx ]\n",
79	(long long)relative_addr);
80	#endif
81
82	switch (relative_addr) {
83	case 0:
84	if (writeflag == MEM_READ)
85	/*
86	* TODO: One of these bits indicate I/O board
87	* present.
88	*/
89	odata = 0xffffffffULL;
90	break;
91
92	default:
93	if (writeflag == MEM_WRITE)
94	debug("[ dec5500_ioboard: unimplemented write to "
95	"address 0x%llx, data=0x%016llx ]\n",
96	(long long)relative_addr, (long long)idata);
97	else
98	debug("[ dec5500_ioboard: unimplemented read from"
99	" address 0x%llx ]\n", (long long)relative_addr);
100	}
101
102	if (writeflag == MEM_READ)
103	memory_writemax64(cpu, data, len, odata);
104
105	return 1;
106	}
107
108
109	/*
110	* dev_sgec_access():
111	*/
112	int dev_sgec_access(struct cpu cpu, struct memory mem,
113	uint64_t relative_addr, unsigned char *data, size_t len,
114	int writeflag, void *extra)
115	{
116	/* struct sgec_data d = (struct sgec_data ) extra; */
117	uint64_t idata = 0, odata = 0;
118
119	idata = memory_readmax64(cpu, data, len);
120
121	#ifdef SGEC_DEBUG
122	if (writeflag == MEM_WRITE)
123	debug("[ sgec: write to address 0x%llx, data=0x%016llx ]\n",
124	(long long)relative_addr, (long long)idata);
125	else
126	debug("[ sgec: read from address 0x%llx ]\n",
127	(long long)relative_addr);
128	#endif
129
130	switch (relative_addr) {
131	case 0x14:
132	if (writeflag == MEM_READ)
133	odata = 0x80000000;
134	break;
135
136	default:
137	if (writeflag == MEM_WRITE)
138	debug("[ sgec: unimplemented write to address 0x%llx,"
139	" data=0x%016llx ]\n", (long long)relative_addr,
140	(long long)idata);
141	else
142	debug("[ sgec: unimplemented read from address "
143	"0x%llx ]\n", (long long)relative_addr);
144	}
145
146	if (writeflag == MEM_READ)
147	memory_writemax64(cpu, data, len, odata);
148
149	return 1;
150	}
151
152
153	/*
154	* dev_sgec_init():
155	*/
156	void dev_sgec_init(struct memory *mem, uint64_t baseaddr, int irq_nr)
157	{
158	struct sgec_data *d = malloc(sizeof(struct sgec_data));
159	if (d == NULL) {
160	fprintf(stderr, "out of memory\n");
161	exit(1);
162	}
163	memset(d, 0, sizeof(struct sgec_data));
164	d->irq_nr = irq_nr;
165
166	memory_device_register(mem, "sgec", baseaddr, DEV_SGEC_LENGTH,
167	dev_sgec_access, (void *)d, MEM_DEFAULT, NULL);
168	}
169
170
171	/*
172	* dev_dec5500_ioboard_init():
173	*/
174	struct dec5500_ioboard_data dev_dec5500_ioboard_init(struct cpu cpu,
175	struct memory *mem, uint64_t baseaddr)
176	{
177	struct dec5500_ioboard_data *d =
178	malloc(sizeof(struct dec5500_ioboard_data));
179	if (d == NULL) {
180	fprintf(stderr, "out of memory\n");
181	exit(1);
182	}
183	memset(d, 0, sizeof(struct dec5500_ioboard_data));
184
185	memory_device_register(mem, "dec5500_ioboard", baseaddr,
186	DEV_DEC5500_IOBOARD_LENGTH, dev_dec5500_ioboard_access,
187	(void *)d, MEM_DEFAULT, NULL);
188
189	return d;
190	}
191