src/devices/dev_lpt.c

/*
 *  Copyright (C) 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_lpt.c,v 1.1 2005/10/09 21:32:08 debug Exp $
 *
 *  LPT (parallel printer) controller.
 *
 *  TODO: This is just a dummy.
 */

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

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


#define debug fatal

#define TICK_SHIFT              15
#define DEV_LPT_LENGTH          3

struct lpt_data {
        int             in_use;
        int             irqnr;
        char            *name;
        int             console_handle;

        unsigned char   data;
};


/*
 *  dev_lpt_tick():
 */
void dev_lpt_tick(struct cpu *cpu, void *extra)
{
        /*  struct lpt_data *d = extra;  */

        /*  TODO  */
}


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

        idata = memory_readmax64(cpu, data, len);

        switch (relative_addr) {

        case 0: if (writeflag == MEM_READ)
                        odata = d->data;
                else
                        d->data = idata;
                break;

        default:
                if (writeflag == MEM_READ) {
                        debug("[ lpt (%s): read from %i: UNIMPLEMENTED ]\n",
                            d->name, (int)relative_addr);
                } else {
                        debug("[ lpt (%s): write to %i, data = 0x%llx: "
                            "UNIMPLEMENTED ]\n", d->name, (int)relative_addr,
                            (long long)idata);
                }
        }

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

        return 1;
}


/*
 *  devinit_lpt():
 */
int devinit_lpt(struct devinit *devinit)
{
        struct lpt_data *d = malloc(sizeof(struct lpt_data));
        size_t nlen;
        char *name;

        if (d == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        memset(d, 0, sizeof(struct lpt_data));
        d->irqnr        = devinit->irq_nr;
        d->in_use       = devinit->in_use;
        d->name         = devinit->name2 != NULL? devinit->name2 : "";
        d->console_handle =
            console_start_slave(devinit->machine, devinit->name);

        nlen = strlen(devinit->name) + 10;
        if (devinit->name2 != NULL)
                nlen += strlen(devinit->name2);
        name = malloc(nlen);
        if (name == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        if (devinit->name2 != NULL && devinit->name2[0])
                snprintf(name, nlen, "%s [%s]", devinit->name, devinit->name2);
        else
                snprintf(name, nlen, "%s", devinit->name);

        memory_device_register(devinit->machine->memory, name, devinit->addr,
            DEV_LPT_LENGTH, dev_lpt_access, d, MEM_DEFAULT, NULL);
        machine_add_tickfunction(devinit->machine, dev_lpt_tick, d, TICK_SHIFT);

        /*
         *  NOTE:  Ugly cast into a pointer, because this is a convenient way
         *         to return the console handle to code in src/machine.c.
         */
        devinit->return_ptr = (void *)(size_t)d->console_handle;

        return 1;
}

1	dpavlin	16	/*
2			* Copyright (C) 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_lpt.c,v 1.1 2005/10/09 21:32:08 debug Exp $
29			*
30			* LPT (parallel printer) controller.
31			*
32			* TODO: This is just a dummy.
33			*/
34
35			#include <stdio.h>
36			#include <stdlib.h>
37			#include <string.h>
38
39			#include "console.h"
40			#include "cpu.h"
41			#include "device.h"
42			#include "machine.h"
43			#include "memory.h"
44			#include "misc.h"
45
46
47			#define debug fatal
48
49			#define TICK_SHIFT 15
50			#define DEV_LPT_LENGTH 3
51
52			struct lpt_data {
53			int in_use;
54			int irqnr;
55			char *name;
56			int console_handle;
57
58			unsigned char data;
59			};
60
61
62			/*
63			* dev_lpt_tick():
64			*/
65			void dev_lpt_tick(struct cpu cpu, void extra)
66			{
67			/* struct lpt_data d = extra; /
68
69			/* TODO */
70			}
71
72
73			/*
74			* dev_lpt_access():
75			*/
76			int dev_lpt_access(struct cpu cpu, struct memory mem,
77			uint64_t relative_addr, unsigned char *data, size_t len,
78			int writeflag, void *extra)
79			{
80			uint64_t idata = 0, odata=0;
81			struct lpt_data *d = extra;
82
83			idata = memory_readmax64(cpu, data, len);
84
85			switch (relative_addr) {
86
87			case 0: if (writeflag == MEM_READ)
88			odata = d->data;
89			else
90			d->data = idata;
91			break;
92
93			default:
94			if (writeflag == MEM_READ) {
95			debug("[ lpt (%s): read from %i: UNIMPLEMENTED ]\n",
96			d->name, (int)relative_addr);
97			} else {
98			debug("[ lpt (%s): write to %i, data = 0x%llx: "
99			"UNIMPLEMENTED ]\n", d->name, (int)relative_addr,
100			(long long)idata);
101			}
102			}
103
104			if (writeflag == MEM_READ)
105			memory_writemax64(cpu, data, len, odata);
106
107			return 1;
108			}
109
110
111			/*
112			* devinit_lpt():
113			*/
114			int devinit_lpt(struct devinit *devinit)
115			{
116			struct lpt_data *d = malloc(sizeof(struct lpt_data));
117			size_t nlen;
118			char *name;
119
120			if (d == NULL) {
121			fprintf(stderr, "out of memory\n");
122			exit(1);
123			}
124			memset(d, 0, sizeof(struct lpt_data));
125			d->irqnr = devinit->irq_nr;
126			d->in_use = devinit->in_use;
127			d->name = devinit->name2 != NULL? devinit->name2 : "";
128			d->console_handle =
129			console_start_slave(devinit->machine, devinit->name);
130
131			nlen = strlen(devinit->name) + 10;
132			if (devinit->name2 != NULL)
133			nlen += strlen(devinit->name2);
134			name = malloc(nlen);
135			if (name == NULL) {
136			fprintf(stderr, "out of memory\n");
137			exit(1);
138			}
139			if (devinit->name2 != NULL && devinit->name2[0])
140			snprintf(name, nlen, "%s [%s]", devinit->name, devinit->name2);
141			else
142			snprintf(name, nlen, "%s", devinit->name);
143
144			memory_device_register(devinit->machine->memory, name, devinit->addr,
145			DEV_LPT_LENGTH, dev_lpt_access, d, MEM_DEFAULT, NULL);
146			machine_add_tickfunction(devinit->machine, dev_lpt_tick, d, TICK_SHIFT);
147
148			/*
149			* NOTE: Ugly cast into a pointer, because this is a convenient way
150			* to return the console handle to code in src/machine.c.
151			*/
152			devinit->return_ptr = (void *)(size_t)d->console_handle;
153
154			return 1;
155			}
156