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Rev | Author | Line No. | Line |
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4006 | yogev_ezra | 1 | ; Stub of videodriver for RDC Semiconductor Co. M2010/M2012 videocards (controller names: R3306/R3308). |
2 | ; It is used in SoC produced by DMP Electronics Inc.: |
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3 | ; Vortex86MX (contains RDC M2010 graphics card, appears in eBox-3300MX) |
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4 | ; Vortex86MX+ (contains RDC M2012 graphics card, appears in eBox-3310MX) |
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5 | ; Link to manufacturers websites - |
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6 | ; RDC Semiconductor Co.: http://www.rdc.com.tw |
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7 | ; DM&P Electronics Inc.: http://www.dmp.com.tw and http://www.compactpc.com.tw |
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8 | ; Code stolen from vidintel.asm driver (c) by CleverMouse and adapted for RDC. |
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9 | |||
10 | ; When the start procedure gets control, |
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11 | ; it tries to detect preferred resolution, |
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12 | ; sets the detected resolution assuming 32-bpp VESA mode and exits |
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13 | ; (without registering a service). |
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14 | ; Detection can be overloaded with compile-time settings |
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15 | ; use_predefined_mode/predefined_width/predefined_height. |
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16 | |||
17 | ; set predefined resolution here |
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18 | use_predefined_mode = 0;1 |
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19 | predefined_width = 0;1366 |
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20 | predefined_height = 0;768 |
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21 | |||
22 | ; standard driver stuff |
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23 | format MS COFF |
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24 | |||
25 | DEBUG = 1 |
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26 | |||
27 | include 'proc32.inc' |
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28 | include 'imports.inc' |
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29 | |||
30 | public START |
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31 | public version |
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32 | |||
33 | section '.flat' code readable align 16 |
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34 | ; the start procedure (see the description above) |
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35 | START: |
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36 | ; 1. Detect device. Abort if not found. |
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37 | push esi |
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38 | call DetectDevice |
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39 | test esi, esi |
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40 | jz .return0 |
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41 | |||
42 | ;{START}yogev_ezra: temporary exit after detection |
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43 | pusha |
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44 | mov esi, exitmsg |
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45 | call SysMsgBoardStr |
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46 | popa |
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47 | jmp .return0 |
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48 | ;{END}yogev_ezra: temporary exit after detection |
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49 | |||
50 | ; 2. Detect optimal mode unless the mode is given explicitly. Abort if failed. |
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51 | if use_predefined_mode = 0 |
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52 | call DetectMode |
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53 | end if |
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54 | cmp [width], 0 |
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55 | jz .return0_cleanup |
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56 | ; 3. Set the detected mode. |
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57 | call SetMode |
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58 | ; 4. Cleanup and return. |
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59 | .return0_cleanup: |
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60 | stdcall FreeKernelSpace, esi |
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61 | .return0: |
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62 | pop esi |
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63 | xor eax, eax |
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64 | ret 4 |
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65 | |||
66 | ; check that there is RDC videocard |
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67 | ; if so, map MMIO registers and set internal variables |
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68 | ; esi points to MMIO block; NULL means no device |
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69 | DetectDevice: |
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70 | ; 1. Sanity check: check that we are dealing with RDC videocard. |
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71 | ; Integrated video device for RDC is always at PCI:0:13:0 (bus:dev:fn=0:0d:0) |
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72 | xor esi, esi ; initialize return value to NULL |
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73 | ; 1a. Get PCI VendorID and DeviceID. |
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74 | push esi ; in: reg=0 (register) -> register 00 means return DeviceID (bits 16-31) + VendorID (bits 0-15) |
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75 | push 68h ; in: devfn=13:0 | device:5bit (0Dh = 1101) + func:3bit (0 = 000) -> total:1byte (1101000b = 68h) |
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76 | push esi ; in: bus=0 |
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77 | call PciRead32 |
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78 | ; 1b. loword(eax) = ax = VendorID, hiword(eax) = DeviceID. |
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79 | ; Test whether we have RDC Semiconductor Co. chipset. |
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80 | cmp ax, 17F3h ;VendorID 0x17F3, 'RDC Semiconductor Co.' |
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81 | jnz .return |
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82 | ; 1c. Say hi including DeviceID. |
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83 | shr eax, 10h ; now, ax = HIWORD(eax) = PCI DeviceID |
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84 | push edi |
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85 | pusha |
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86 | mov edi, pciid_text ; edi='0000' |
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87 | call WriteWord |
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88 | mov esi, hellomsg |
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89 | call SysMsgBoardStr |
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90 | popa |
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91 | ; 1d. Test whether we know this DeviceID. |
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92 | ; If this is the case, remember the position of the device in line of RDC cards; |
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93 | ; this knowledge will be useful later. |
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94 | ; Tested on devices with id: 17F3:2010, 17F3:2012. |
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95 | mov ecx, pciids_num |
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96 | mov edi, pciids |
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97 | repnz scasw |
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98 | pop edi |
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99 | jnz .return_unknown_pciid |
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100 | sub ecx, pciids_num - 1 |
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101 | neg ecx |
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102 | mov [deviceType], ecx |
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103 | ; 1e. Continue saying hi with positive intonation. |
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104 | pusha |
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105 | mov esi, knownmsg |
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106 | call SysMsgBoardStr |
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107 | popa |
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108 | ; 2. Prepare MMIO region to control the card. |
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109 | ; 2a. Read MMIO physical address from PCI config space. |
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110 | ; According to RDC M2010/M2012 registers manual, their memory-mapped I/O space is located at Base address #1 |
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111 | push 14h ; in: reg=14h (register) -> register 14h means Base address #1 (BAR1) in PCI configuration space |
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112 | push 68h ; in: devfn=13:0 | device:5bit (0Dh = 1101) + func:3bit (0 = 000) -> total:1byte (1101000b = 68h) |
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113 | push esi ; in: bus=0 |
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114 | call PciRead32 |
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115 | ; 2b. Mask out PCI region type, lower 4 bits. |
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116 | and al, not 0xF |
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117 | ; 2c. Create virtual mapping of the physical memory. |
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118 | push 1Bh |
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119 | push 100000h |
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120 | push eax |
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121 | call MapIoMem |
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122 | ; 3. Return. |
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123 | xchg esi, eax |
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124 | .return: |
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125 | ret |
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126 | ; 1f. If we do not know DeviceID, continue saying hi with negative intonation. |
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127 | .return_unknown_pciid: |
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128 | pusha |
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129 | mov esi, unknownmsg |
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130 | call SysMsgBoardStr |
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131 | popa |
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132 | ret |
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133 | |||
134 | ; Convert word in ax to hexadecimal text in edi, advance edi. |
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135 | WriteWord: |
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136 | ; 1. Convert high byte. |
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137 | push eax |
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138 | mov al, ah |
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139 | call WriteByte |
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140 | pop eax |
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141 | ; 2. Convert low byte. |
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142 | ; Fall through to WriteByte; ret from WriteByte is ret from WriteWord too. |
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143 | |||
144 | ; Convert byte in al to hexadecimal text in edi, advance edi. |
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145 | WriteByte: |
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146 | ; 1. Convert high nibble. |
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147 | push eax |
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148 | shr al, 4 |
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149 | call WriteNibble |
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150 | pop eax |
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151 | ; 2. Convert low nibble. |
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152 | and al, 0xF |
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153 | ; Fall through to WriteNibble; ret from WriteNibble is ret from WriteByte too. |
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154 | |||
155 | ; Convert nibble in al to hexadecimal text in edi, advance edi. |
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156 | WriteNibble: |
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157 | ; Obvious, isn't it? |
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158 | cmp al, 10 |
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159 | sbb al, 69h |
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160 | das |
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161 | stosb ; This instruction uses EDI implicitly |
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162 | ret |
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163 | |||
164 | if use_predefined_mode = 0 |
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165 | ; detect resolution of the flat panel |
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166 | DetectMode: |
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167 | push esi edi |
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168 | ; 1. Get the location of block of GMBUS* registers. |
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169 | ; Starting with Ironlake, GMBUS* registers were moved. |
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170 | add esi, 5100h |
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171 | cmp [deviceType], pciids_num ;ironlake_start |
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172 | jb @f |
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173 | add esi, 0xC0000 |
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174 | @@: |
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175 | ; 2. Initialize GMBUS engine. |
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176 | mov edi, edid |
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177 | mov ecx, 0x10000 |
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178 | @@: |
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179 | test byte [esi+8+1], 80h |
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180 | loopnz @b |
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181 | jnz .fail |
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182 | mov dword [esi], 3 |
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183 | test byte [esi+8+1], 4 |
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184 | jz .noreset |
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185 | call ResetGMBus |
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186 | jnz .fail |
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187 | .noreset: |
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188 | ; 3. Send read command. |
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189 | and dword [esi+20h], 0 |
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190 | mov dword [esi+4], 4E8000A1h |
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191 | ; 4. Wait for data, writing to the buffer as data arrive. |
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192 | .getdata: |
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193 | mov ecx, 0x10000 |
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194 | @@: |
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195 | test byte [esi+8+1], 8 |
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196 | loopz @b |
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197 | test byte [esi+8+1], 4 |
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198 | jz .dataok |
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199 | call ResetGMBus |
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200 | jmp .fail |
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201 | .dataok: |
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202 | mov eax, [esi+0Ch] |
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203 | stosd |
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204 | cmp edi, edid+80h |
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205 | jb .getdata |
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206 | ; 5. Wait for bus idle. |
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207 | mov ecx, 0x10000 |
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208 | @@: |
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209 | test byte [esi+8+1], 2 |
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210 | loopnz @b |
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211 | ; 6. We got EDID; dump it if DEBUG. |
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212 | if DEBUG |
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213 | pusha |
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214 | xor ecx, ecx |
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215 | mov esi, edid |
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216 | mov edi, edid_text |
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217 | .dumploop: |
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218 | lodsb |
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219 | call WriteByte |
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220 | mov al, ' ' |
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221 | stosb |
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222 | inc cl |
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223 | test cl, 15 |
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224 | jnz @f |
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225 | mov byte [edi-1], 13 |
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226 | mov al, 10 |
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227 | stosb |
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228 | @@: |
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229 | test cl, cl |
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230 | jns .dumploop |
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231 | mov esi, edidmsg |
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232 | call SysMsgBoardStr |
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233 | popa |
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234 | end if |
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235 | ; 7. Test whether EDID is good. |
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236 | ; 7a. Signature: 00 FF FF FF FF FF FF 00. |
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237 | mov esi, edid |
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238 | cmp dword [esi], 0xFFFFFF00 |
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239 | jnz .fail |
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240 | cmp dword [esi+4], 0x00FFFFFF |
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241 | jnz .fail |
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242 | ; 7b. Checksum must be zero. |
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243 | xor edx, edx |
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244 | mov ecx, 80h |
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245 | @@: |
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246 | lodsb |
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247 | add dl, al |
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248 | loop @b |
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249 | jnz .fail |
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250 | ; 8. Get width and height from EDID. |
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251 | xor eax, eax |
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252 | mov ah, [esi-80h+3Ah] |
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253 | shr ah, 4 |
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254 | mov al, [esi-80h+38h] |
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255 | mov [width], eax |
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256 | mov ah, [esi-80h+3Dh] |
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257 | shr ah, 4 |
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258 | mov al, [esi-80h+3Bh] |
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259 | mov [height], eax |
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260 | ; 9. Return. |
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261 | .fail: |
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262 | pop edi esi |
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263 | ret |
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264 | |||
265 | ; reset bus, clear all errors |
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266 | ResetGMBus: |
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267 | ; look into the PRM |
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268 | mov dword [esi+4], 80000000h |
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269 | mov dword [esi+4], 0 |
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270 | mov ecx, 0x10000 |
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271 | @@: |
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272 | test byte [esi+8+1], 2 |
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273 | loopnz @b |
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274 | ret |
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275 | end if |
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276 | |||
277 | ; set resolution [width]*[height] |
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278 | SetMode: |
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279 | ; 1. Program the registers of videocard. |
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280 | ; look into the PRM |
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281 | cli |
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282 | ; or byte [esi+7000Ah], 0Ch ; PIPEACONF: disable Display+Cursor Planes |
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283 | ; or byte [esi+7100Ah], 0Ch ; PIPEBCONF: disable Display+Cursor Planes |
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284 | xor eax, eax |
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285 | xor edx, edx |
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286 | cmp [deviceType], pciids_num ;i965_start |
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287 | jb @f |
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288 | mov dl, 9Ch - 84h |
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289 | @@: |
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290 | ; or byte [esi+71403h], 80h ; VGACNTRL: VGA Display Disable |
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291 | and byte [esi+70080h], not 27h ; CURACNTR: disable cursor A |
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292 | mov dword [esi+70084h], eax ; CURABASE: force write to CURA* regs |
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293 | and byte [esi+700C0h], not 27h ; CURBCNTR: disable cursor B |
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294 | mov dword [esi+700C4h], eax ; CURBBASE: force write to CURB* regs |
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295 | and byte [esi+70183h], not 80h ; DSPACNTR: disable Primary A Plane |
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296 | mov dword [esi+edx+70184h], eax ; DSPALINOFF/DSPASURF: force write to DSPA* regs |
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297 | and byte [esi+71183h], not 80h ; DSPBCNTR: disable Primary B Plane |
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298 | mov dword [esi+edx+71184h], eax ; DSPBLINOFF/DSPBSURF: force write to DSPB* regs |
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299 | if 1 |
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300 | cmp [deviceType], pciids_num ;ironlake_start |
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301 | jae .disable_pipes |
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302 | mov edx, 10000h |
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303 | or byte [esi+70024h], 2 ; PIPEASTAT: clear VBLANK status |
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304 | or byte [esi+71024h], 2 ; PIPEBSTAT: clear VBLANK status |
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305 | .wait_vblank_preironlake1: |
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306 | mov ecx, 1000h |
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307 | loop $ |
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308 | test byte [esi+7000Bh], 80h ; PIPEACONF: pipe A active? |
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309 | jz @f |
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310 | test byte [esi+70024h], 2 ; PIPEASTAT: got VBLANK? |
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311 | jz .wait_vblank_preironlake2 |
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312 | @@: |
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313 | test byte [esi+7100Bh], 80h ; PIPEBCONF: pipe B active? |
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314 | jz .disable_pipes |
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315 | test byte [esi+71024h], 2 ; PIPEBSTAT: got VBLANK? |
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316 | jnz .disable_pipes |
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317 | .wait_vblank_preironlake2: |
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318 | dec edx |
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319 | jnz .wait_vblank_preironlake1 |
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320 | jmp .not_disabled |
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321 | .disable_pipes: |
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322 | end if |
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323 | and byte [esi+7000Bh], not 80h ; PIPEACONF: disable pipe |
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324 | and byte [esi+7100Bh], not 80h ; PIPEBCONF: disable pipe |
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325 | cmp [deviceType], pciids_num ;gen4_start |
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326 | jb .wait_watching_scanline |
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327 | ; g45 and later: use special flag from PIPE*CONF |
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328 | mov edx, 10000h |
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329 | @@: |
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330 | mov ecx, 1000h |
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331 | loop $ |
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332 | test byte [esi+7000Bh], 40h ; PIPEACONF: wait until pipe disabled |
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333 | jz @f |
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334 | dec edx |
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335 | jnz @b |
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336 | jmp .not_disabled |
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337 | @@: |
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338 | test byte [esi+7100Bh], 40h ; PIPEBCONF: wait until pipe disabled |
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339 | jz .disabled |
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340 | mov ecx, 1000h |
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341 | loop $ |
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342 | dec edx |
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343 | jnz @b |
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344 | jmp .not_disabled |
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345 | ; pineview and before: wait while scanline still changes |
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346 | .wait_watching_scanline: |
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347 | mov edx, 1000h |
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348 | .dis1: |
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349 | push dword [esi+71000h] |
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350 | push dword [esi+70000h] |
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351 | mov ecx, 10000h |
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352 | loop $ |
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353 | pop eax |
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354 | xor eax, [esi+70000h] |
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355 | and eax, 1FFFh |
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356 | pop eax |
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357 | jnz .notdis1 |
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358 | xor eax, [esi+71000h] |
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359 | and eax, 1FFFh |
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360 | jz .disabled |
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361 | .notdis1: |
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362 | dec edx |
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363 | jnz .dis1 |
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364 | .not_disabled: |
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365 | sti |
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366 | jmp .return |
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367 | .disabled: |
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368 | lea eax, [esi+61183h] |
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369 | cmp [deviceType], pciids_num ;ironlake_start |
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370 | jb @f |
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371 | add eax, 0xE0000 - 0x60000 |
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372 | @@: |
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373 | lea edx, [esi+60000h] |
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374 | test byte [eax], 40h |
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375 | jz @f |
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376 | add edx, 1000h |
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377 | @@: |
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378 | mov eax, [width] |
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379 | dec eax |
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380 | shl eax, 16 |
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381 | mov ax, word [height] |
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382 | dec eax |
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383 | mov dword [edx+1Ch], eax ; PIPEASRC: set source image size |
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384 | ror eax, 16 |
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385 | mov dword [edx+10190h], eax ; for old cards |
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386 | mov ecx, [width] |
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387 | add ecx, 15 |
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388 | and ecx, not 15 |
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389 | shl ecx, 2 |
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390 | mov dword [edx+10188h], ecx ; DSPASTRIDE: set scanline length |
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391 | mov dword [edx+10184h], 0 ; DSPALINOFF: force write to DSPA* registers |
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392 | and byte [esi+61233h], not 80h ; PFIT_CONTROL: disable panel fitting |
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393 | or byte [edx+1000Bh], 80h ; PIPEACONF: enable pipe |
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394 | ; and byte [edx+1000Ah], not 0Ch ; PIPEACONF: enable Display+Cursor Planes |
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395 | or byte [edx+10183h], 80h ; DSPACNTR: enable Display Plane A |
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396 | sti |
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397 | ; 2. Notify the kernel that resolution has changed. |
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398 | call GetDisplay |
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399 | mov edx, [width] |
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400 | mov dword [eax+8], edx |
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401 | mov edx, [height] |
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402 | mov dword [eax+0Ch], edx |
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403 | mov [eax+18h], ecx |
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404 | mov eax, [width] |
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405 | dec eax |
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406 | dec edx |
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407 | call SetScreen |
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408 | .return: |
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409 | ret |
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410 | |||
411 | align 4 |
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412 | hellomsg db 'RDC videocard detected, PciId=17F3:' ;VendorID 0x17F3, 'RDC Semiconductor Co.' |
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413 | pciid_text db '0000' |
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414 | db ', which is ', 0 |
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415 | knownmsg db 'known',13,10,0 |
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416 | unknownmsg db 'unknown',13,10,0 |
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417 | exitmsg db 'Card detected successfully, exiting driver...',13,10,0 |
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418 | |||
419 | if DEBUG |
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420 | edidmsg db 'EDID successfully read:',13,10 |
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421 | edid_text rb 8*(16*3+1) |
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422 | db 0 |
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423 | end if |
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424 | |||
425 | version: |
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426 | dd 0x50005 |
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427 | |||
428 | width dd predefined_width |
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429 | height dd predefined_height |
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430 | |||
431 | pciids: |
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432 | dw 0x2010 ; M2010 - appears in eBox-3300MX (Vortex86MX SoC) |
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433 | dw 0x2012 ; M2012 - appears in eBox-3310MX (Vortex86MX+ SoC) |
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434 | pciids_num = ($ - pciids) / 2 |
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435 | |||
436 | align 4 |
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437 | deviceType dd ? |
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438 | edid rb 0x80 |