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1897 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
1897 jermar 3
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup sparc64
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 * @{
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 */
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/** @file
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 */
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#include <arch/drivers/scr.h>
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#include <genarch/ofw/ofw_tree.h>
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#include <genarch/fb/fb.h>
1993 decky 38
#include <genarch/fb/visuals.h>
1897 jermar 39
#include <arch/types.h>
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#include <func.h>
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#include <align.h>
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#include <print.h>
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1898 jermar 44
#define FFB_REG_24BPP   7
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1897 jermar 46
scr_type_t scr_type = SCR_UNKNOWN;
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/** Initialize screen.
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 *
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 * Traverse OpenFirmware device tree in order to find necessary
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 * info about the screen device.
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 *
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 * @param node Screen device node.
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 */
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void scr_init(ofw_tree_node_t *node)
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{
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    ofw_tree_property_t *prop;
3672 jermar 58
    ofw_pci_reg_t *pci_reg;
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    ofw_pci_reg_t pci_abs_reg;
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    ofw_upa_reg_t *upa_reg;
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    ofw_sbus_reg_t *sbus_reg;
1897 jermar 62
    const char *name;
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    name = ofw_tree_node_name(node);
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    if (strcmp(name, "SUNW,m64B") == 0)
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        scr_type = SCR_ATYFB;
3672 jermar 68
    else if (strcmp(name, "SUNW,XVR-100") == 0)
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        scr_type = SCR_XVR;
1897 jermar 70
    else if (strcmp(name, "SUNW,ffb") == 0)
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        scr_type = SCR_FFB;
2510 jermar 72
    else if (strcmp(name, "cgsix") == 0)
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        scr_type = SCR_CGSIX;
1897 jermar 74
 
75
    if (scr_type == SCR_UNKNOWN) {
3672 jermar 76
        printf("Unknown screen device.\n");
1897 jermar 77
        return;
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    }
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    uintptr_t fb_addr;
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    uint32_t fb_width = 0;
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    uint32_t fb_height = 0;
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    uint32_t fb_depth = 0;
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    uint32_t fb_linebytes = 0;
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    uint32_t fb_scanline = 0;
1993 decky 86
    unsigned int visual;
1897 jermar 87
 
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    prop = ofw_tree_getprop(node, "width");
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    if (prop && prop->value)
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        fb_width = *((uint32_t *) prop->value);
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    prop = ofw_tree_getprop(node, "height");
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    if (prop && prop->value)
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        fb_height = *((uint32_t *) prop->value);
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96
    prop = ofw_tree_getprop(node, "depth");
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    if (prop && prop->value)
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        fb_depth = *((uint32_t *) prop->value);
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100
    prop = ofw_tree_getprop(node, "linebytes");
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    if (prop && prop->value)
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        fb_linebytes = *((uint32_t *) prop->value);
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104
    prop = ofw_tree_getprop(node, "reg");
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    if (!prop)
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        panic("Can't find \"reg\" property.\n");
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108
    switch (scr_type) {
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    case SCR_ATYFB:
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        if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
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            printf("Too few screen registers.\n");
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            return;
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        }
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3672 jermar 115
        pci_reg = &((ofw_pci_reg_t *) prop->value)[1];
1897 jermar 116
 
3672 jermar 117
        if (!ofw_pci_reg_absolutize(node, pci_reg, &pci_abs_reg)) {
1897 jermar 118
            printf("Failed to absolutize fb register.\n");
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            return;
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        }
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3672 jermar 122
        if (!ofw_pci_apply_ranges(node->parent, &pci_abs_reg,
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            &fb_addr)) {
1897 jermar 124
            printf("Failed to determine screen address.\n");
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            return;
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        }
1993 decky 127
 
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        switch (fb_depth) {
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        case 8:
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            fb_scanline = fb_linebytes * (fb_depth >> 3);
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            visual = VISUAL_INDIRECT_8;
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            break;
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        case 16:
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            fb_scanline = fb_linebytes * (fb_depth >> 3);
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            visual = VISUAL_RGB_5_6_5;
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            break;
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        case 24:
1897 jermar 138
            fb_scanline = fb_linebytes * 4;
1993 decky 139
            visual = VISUAL_RGB_8_8_8_0;
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            break;
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        case 32:
1897 jermar 142
            fb_scanline = fb_linebytes * (fb_depth >> 3);
1993 decky 143
            visual = VISUAL_RGB_0_8_8_8;
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            break;
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        default:
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            printf("Unsupported bits per pixel.\n");
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            return;
148
        }
1897 jermar 149
 
150
        break;
3672 jermar 151
    case SCR_XVR:
152
        if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
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            printf("Too few screen registers.\n");
154
            return;
155
        }
156
 
157
        pci_reg = &((ofw_pci_reg_t *) prop->value)[1];
158
 
159
        if (!ofw_pci_reg_absolutize(node, pci_reg, &pci_abs_reg)) {
160
            printf("Failed to absolutize fb register.\n");
161
            return;
162
        }
163
 
164
        if (!ofw_pci_apply_ranges(node->parent, &pci_abs_reg,
165
            &fb_addr)) {
166
            printf("Failed to determine screen address.\n");
167
            return;
168
        }
169
 
170
        switch (fb_depth) {
171
        case 8:
172
            fb_scanline = fb_linebytes * (fb_depth >> 3);
173
            visual = VISUAL_SB1500_PALETTE;
174
            break;
175
        case 16:
176
            fb_scanline = fb_linebytes * (fb_depth >> 3);
177
            visual = VISUAL_RGB_5_6_5;
178
            break;
179
        case 24:
180
            fb_scanline = fb_linebytes * 4;
181
            visual = VISUAL_RGB_8_8_8_0;
182
            break;
183
        case 32:
184
            fb_scanline = fb_linebytes * (fb_depth >> 3);
185
            visual = VISUAL_RGB_0_8_8_8;
186
            break;
187
        default:
188
            printf("Unsupported bits per pixel.\n");
189
            return;
190
        }
191
 
192
        break;
1898 jermar 193
    case SCR_FFB:  
194
        fb_scanline = 8192;
1994 decky 195
        visual = VISUAL_BGR_0_8_8_8;
1898 jermar 196
 
3672 jermar 197
        upa_reg = &((ofw_upa_reg_t *) prop->value)[FFB_REG_24BPP];
198
        if (!ofw_upa_apply_ranges(node->parent, upa_reg, &fb_addr)) {
1898 jermar 199
            printf("Failed to determine screen address.\n");
200
            return;
201
        }
202
 
203
        break;
2510 jermar 204
    case SCR_CGSIX:
205
        switch (fb_depth) {
206
        case 8:
207
            fb_scanline = fb_linebytes;
208
            visual = VISUAL_INDIRECT_8;
209
            break;
210
        default:
211
            printf("Not implemented.\n");
212
            return;
213
        }
214
 
3672 jermar 215
        sbus_reg = &((ofw_sbus_reg_t *) prop->value)[0];
216
        if (!ofw_sbus_apply_ranges(node->parent, sbus_reg, &fb_addr)) {
2510 jermar 217
            printf("Failed to determine screen address.\n");
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            return;
219
        }
220
 
221
        break;
1897 jermar 222
    default:
223
        panic("Unexpected type.\n");
224
    }
225
 
3672 jermar 226
    fb_properties_t props = {
227
        .addr = fb_addr,
228
        .offset = 0,
229
        .x = fb_width,
230
        .y = fb_height,
231
        .scan = fb_scanline,
232
        .visual = visual,
233
    };
234
    fb_init(&props);
1897 jermar 235
}
236
 
237
/** @}
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 */