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1897 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Jakub Jermar |
1897 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup sparc64 |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
35 | #include <arch/drivers/scr.h> |
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36 | #include <genarch/ofw/ofw_tree.h> |
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37 | #include <genarch/fb/fb.h> |
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1993 | decky | 38 | #include <genarch/fb/visuals.h> |
1897 | jermar | 39 | #include <arch/types.h> |
40 | #include <typedefs.h> |
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41 | #include <func.h> |
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42 | #include <align.h> |
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43 | #include <print.h> |
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44 | |||
1898 | jermar | 45 | #define FFB_REG_24BPP 7 |
46 | |||
1897 | jermar | 47 | scr_type_t scr_type = SCR_UNKNOWN; |
48 | |||
49 | /** Initialize screen. |
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50 | * |
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51 | * Traverse OpenFirmware device tree in order to find necessary |
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52 | * info about the screen device. |
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53 | * |
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54 | * @param node Screen device node. |
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55 | */ |
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56 | void scr_init(ofw_tree_node_t *node) |
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57 | { |
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58 | ofw_tree_property_t *prop; |
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59 | const char *name; |
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60 | |||
61 | name = ofw_tree_node_name(node); |
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62 | |||
63 | if (strcmp(name, "SUNW,m64B") == 0) |
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64 | scr_type = SCR_ATYFB; |
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65 | else if (strcmp(name, "SUNW,ffb") == 0) |
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66 | scr_type = SCR_FFB; |
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67 | |||
68 | if (scr_type == SCR_UNKNOWN) { |
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69 | printf("Unknown keyboard device.\n"); |
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70 | return; |
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71 | } |
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72 | |||
73 | uintptr_t fb_addr; |
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74 | uint32_t fb_width = 0; |
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75 | uint32_t fb_height = 0; |
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76 | uint32_t fb_depth = 0; |
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77 | uint32_t fb_linebytes = 0; |
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78 | uint32_t fb_scanline = 0; |
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1993 | decky | 79 | unsigned int visual; |
1897 | jermar | 80 | |
81 | prop = ofw_tree_getprop(node, "width"); |
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82 | if (prop && prop->value) |
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83 | fb_width = *((uint32_t *) prop->value); |
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84 | |||
85 | prop = ofw_tree_getprop(node, "height"); |
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86 | if (prop && prop->value) |
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87 | fb_height = *((uint32_t *) prop->value); |
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88 | |||
89 | prop = ofw_tree_getprop(node, "depth"); |
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90 | if (prop && prop->value) |
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91 | fb_depth = *((uint32_t *) prop->value); |
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92 | |||
93 | prop = ofw_tree_getprop(node, "linebytes"); |
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94 | if (prop && prop->value) |
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95 | fb_linebytes = *((uint32_t *) prop->value); |
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96 | |||
97 | prop = ofw_tree_getprop(node, "reg"); |
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98 | if (!prop) |
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99 | panic("Can't find \"reg\" property.\n"); |
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100 | |||
101 | switch (scr_type) { |
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102 | case SCR_ATYFB: |
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103 | if (prop->size / sizeof(ofw_pci_reg_t) < 2) { |
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104 | printf("Too few screen registers.\n"); |
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105 | return; |
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106 | } |
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107 | |||
108 | ofw_pci_reg_t *fb_reg = &((ofw_pci_reg_t *) prop->value)[1]; |
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109 | ofw_pci_reg_t abs_reg; |
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110 | |||
111 | if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) { |
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112 | printf("Failed to absolutize fb register.\n"); |
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113 | return; |
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114 | } |
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115 | |||
116 | if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) { |
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117 | printf("Failed to determine screen address.\n"); |
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118 | return; |
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119 | } |
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1993 | decky | 120 | |
121 | switch (fb_depth) { |
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122 | case 8: |
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123 | fb_scanline = fb_linebytes * (fb_depth >> 3); |
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124 | visual = VISUAL_INDIRECT_8; |
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125 | break; |
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126 | case 16: |
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127 | fb_scanline = fb_linebytes * (fb_depth >> 3); |
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128 | visual = VISUAL_RGB_5_6_5; |
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129 | break; |
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130 | case 24: |
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1897 | jermar | 131 | fb_scanline = fb_linebytes * 4; |
1993 | decky | 132 | visual = VISUAL_RGB_8_8_8_0; |
133 | break; |
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134 | case 32: |
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1897 | jermar | 135 | fb_scanline = fb_linebytes * (fb_depth >> 3); |
1993 | decky | 136 | visual = VISUAL_RGB_0_8_8_8; |
137 | break; |
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138 | default: |
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139 | printf("Unsupported bits per pixel.\n"); |
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140 | return; |
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141 | } |
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1897 | jermar | 142 | |
143 | break; |
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1898 | jermar | 144 | case SCR_FFB: |
145 | fb_scanline = 8192; |
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1994 | decky | 146 | visual = VISUAL_BGR_0_8_8_8; |
1898 | jermar | 147 | |
148 | ofw_upa_reg_t *reg = &((ofw_upa_reg_t *) prop->value)[FFB_REG_24BPP]; |
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149 | if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) { |
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150 | printf("Failed to determine screen address.\n"); |
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151 | return; |
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152 | } |
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153 | |||
154 | break; |
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1897 | jermar | 155 | default: |
156 | panic("Unexpected type.\n"); |
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157 | } |
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158 | |||
1993 | decky | 159 | fb_init(fb_addr, fb_width, fb_height, fb_scanline, visual); |
1897 | jermar | 160 | } |
161 | |||
162 | /** @} |
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163 | */ |