Subversion Repositories HelenOS

Rev

Rev 2071 | Rev 3672 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1897 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1897 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - 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
 * - 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 OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup sparc64
30
 * @{
31
 */
32
/** @file
33
 */
34
 
35
#include <arch/drivers/scr.h>
36
#include <genarch/ofw/ofw_tree.h>
37
#include <genarch/fb/fb.h>
1993 decky 38
#include <genarch/fb/visuals.h>
1897 jermar 39
#include <arch/types.h>
40
#include <func.h>
41
#include <align.h>
42
#include <print.h>
43
 
1898 jermar 44
#define FFB_REG_24BPP   7
45
 
1897 jermar 46
scr_type_t scr_type = SCR_UNKNOWN;
47
 
48
/** Initialize screen.
49
 *
50
 * Traverse OpenFirmware device tree in order to find necessary
51
 * info about the screen device.
52
 *
53
 * @param node Screen device node.
54
 */
55
void scr_init(ofw_tree_node_t *node)
56
{
57
    ofw_tree_property_t *prop;
58
    const char *name;
59
 
60
    name = ofw_tree_node_name(node);
61
 
62
    if (strcmp(name, "SUNW,m64B") == 0)
63
        scr_type = SCR_ATYFB;
64
    else if (strcmp(name, "SUNW,ffb") == 0)
65
        scr_type = SCR_FFB;
66
 
67
    if (scr_type == SCR_UNKNOWN) {
68
        printf("Unknown keyboard device.\n");
69
        return;
70
    }
71
 
72
    uintptr_t fb_addr;
73
    uint32_t fb_width = 0;
74
    uint32_t fb_height = 0;
75
    uint32_t fb_depth = 0;
76
    uint32_t fb_linebytes = 0;
77
    uint32_t fb_scanline = 0;
1993 decky 78
    unsigned int visual;
1897 jermar 79
 
80
    prop = ofw_tree_getprop(node, "width");
81
    if (prop && prop->value)
82
        fb_width = *((uint32_t *) prop->value);
83
 
84
    prop = ofw_tree_getprop(node, "height");
85
    if (prop && prop->value)
86
        fb_height = *((uint32_t *) prop->value);
87
 
88
    prop = ofw_tree_getprop(node, "depth");
89
    if (prop && prop->value)
90
        fb_depth = *((uint32_t *) prop->value);
91
 
92
    prop = ofw_tree_getprop(node, "linebytes");
93
    if (prop && prop->value)
94
        fb_linebytes = *((uint32_t *) prop->value);
95
 
96
    prop = ofw_tree_getprop(node, "reg");
97
    if (!prop)
98
        panic("Can't find \"reg\" property.\n");
99
 
100
    switch (scr_type) {
101
    case SCR_ATYFB:
102
        if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
103
            printf("Too few screen registers.\n");
104
            return;
105
        }
106
 
107
        ofw_pci_reg_t *fb_reg = &((ofw_pci_reg_t *) prop->value)[1];
108
        ofw_pci_reg_t abs_reg;
109
 
110
        if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) {
111
            printf("Failed to absolutize fb register.\n");
112
            return;
113
        }
114
 
115
        if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) {
116
            printf("Failed to determine screen address.\n");
117
            return;
118
        }
1993 decky 119
 
120
        switch (fb_depth) {
121
        case 8:
122
            fb_scanline = fb_linebytes * (fb_depth >> 3);
123
            visual = VISUAL_INDIRECT_8;
124
            break;
125
        case 16:
126
            fb_scanline = fb_linebytes * (fb_depth >> 3);
127
            visual = VISUAL_RGB_5_6_5;
128
            break;
129
        case 24:
1897 jermar 130
            fb_scanline = fb_linebytes * 4;
1993 decky 131
            visual = VISUAL_RGB_8_8_8_0;
132
            break;
133
        case 32:
1897 jermar 134
            fb_scanline = fb_linebytes * (fb_depth >> 3);
1993 decky 135
            visual = VISUAL_RGB_0_8_8_8;
136
            break;
137
        default:
138
            printf("Unsupported bits per pixel.\n");
139
            return;
140
        }
1897 jermar 141
 
142
        break;
1898 jermar 143
    case SCR_FFB:  
144
        fb_scanline = 8192;
1994 decky 145
        visual = VISUAL_BGR_0_8_8_8;
1898 jermar 146
 
147
        ofw_upa_reg_t *reg = &((ofw_upa_reg_t *) prop->value)[FFB_REG_24BPP];
148
        if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) {
149
            printf("Failed to determine screen address.\n");
150
            return;
151
        }
152
 
153
        break;
1897 jermar 154
    default:
155
        panic("Unexpected type.\n");
156
    }
157
 
1993 decky 158
    fb_init(fb_addr, fb_width, fb_height, fb_scanline, visual);
1897 jermar 159
}
160
 
161
/** @}
162
 */