src/devices/dev_colorplanemask.c

/*
 *  Copyright (C) 2003-2007  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_colorplanemask.c,v 1.13 2006/12/30 13:30:57 debug Exp $
 *  
 *  Color plane mask used by DECstation 3100.
 *
 *  Just a one-byte thingy, but the way things work now this has to
 *  be a separate device. :-/
 */

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

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


struct colorplanemask_data {
        unsigned char   *color_plane_mask;
};


/*
 *  dev_colorplanemask_access():
 */
DEVICE_ACCESS(colorplanemask)
{
        struct colorplanemask_data *d = (struct colorplanemask_data *) extra;

        switch (relative_addr) {
        case 0x00:
                if (writeflag == MEM_WRITE) {
                        *d->color_plane_mask = data[0];
                } else {
                        debug("[ colorplanemask: read isn't actually "
                            "supported ]\n");
                        data[0] = *d->color_plane_mask;
                }
                break;
        default:
                if (writeflag == MEM_WRITE) {
                        debug("[ colorplanemask: unimplemented write "
                            "to address 0x%x, data=0x%02x ]\n",
                            (int)relative_addr, data[0]);
                } else {
                        debug("[ colorplanemask: unimplemented read "
                            "from address 0x%x ]\n", (int)relative_addr);
                }
        }

        /*  Pretend it was ok:  */
        return 1;
}


/*
 *  dev_colorplanemask_init():
 */
void dev_colorplanemask_init(struct memory *mem, uint64_t baseaddr,
        unsigned char *color_plane_mask)
{
        struct colorplanemask_data *d =
            malloc(sizeof(struct colorplanemask_data));
        if (d == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        memset(d, 0, sizeof(struct colorplanemask_data));
        d->color_plane_mask = color_plane_mask;

        memory_device_register(mem, "colorplanemask", baseaddr,
            DEV_COLORPLANEMASK_LENGTH, dev_colorplanemask_access,
            (void *)d, DM_DEFAULT, NULL);
}

1	dpavlin	4	/*
2	dpavlin	34	* Copyright (C) 2003-2007 Anders Gavare. All rights reserved.
3	dpavlin	4	*
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	dpavlin	34	* $Id: dev_colorplanemask.c,v 1.13 2006/12/30 13:30:57 debug Exp $
29	dpavlin	4	*
30			* Color plane mask used by DECstation 3100.
31			*
32			* Just a one-byte thingy, but the way things work now this has to
33			* be a separate device. :-/
34			*/
35
36			#include <stdio.h>
37			#include <stdlib.h>
38			#include <string.h>
39
40			#include "devices.h"
41			#include "memory.h"
42			#include "misc.h"
43
44
45			struct colorplanemask_data {
46			unsigned char *color_plane_mask;
47			};
48
49
50			/*
51			* dev_colorplanemask_access():
52			*/
53	dpavlin	22	DEVICE_ACCESS(colorplanemask)
54	dpavlin	4	{
55			struct colorplanemask_data d = (struct colorplanemask_data ) extra;
56
57			switch (relative_addr) {
58			case 0x00:
59			if (writeflag == MEM_WRITE) {
60			*d->color_plane_mask = data[0];
61			} else {
62			debug("[ colorplanemask: read isn't actually "
63			"supported ]\n");
64			data[0] = *d->color_plane_mask;
65			}
66			break;
67			default:
68			if (writeflag == MEM_WRITE) {
69			debug("[ colorplanemask: unimplemented write "
70			"to address 0x%x, data=0x%02x ]\n",
71			(int)relative_addr, data[0]);
72			} else {
73			debug("[ colorplanemask: unimplemented read "
74			"from address 0x%x ]\n", (int)relative_addr);
75			}
76			}
77
78			/* Pretend it was ok: */
79			return 1;
80			}
81
82
83			/*
84			* dev_colorplanemask_init():
85			*/
86			void dev_colorplanemask_init(struct memory *mem, uint64_t baseaddr,
87			unsigned char *color_plane_mask)
88			{
89			struct colorplanemask_data *d =
90			malloc(sizeof(struct colorplanemask_data));
91			if (d == NULL) {
92			fprintf(stderr, "out of memory\n");
93			exit(1);
94			}
95			memset(d, 0, sizeof(struct colorplanemask_data));
96			d->color_plane_mask = color_plane_mask;
97
98			memory_device_register(mem, "colorplanemask", baseaddr,
99			DEV_COLORPLANEMASK_LENGTH, dev_colorplanemask_access,
100	dpavlin	20	(void *)d, DM_DEFAULT, NULL);
101	dpavlin	4	}
102