Rev 9910 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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10051 | ace_dent | 3 | ;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; ;; |
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7 | ;; PCI32.INC ;; |
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8 | ;; ;; |
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9 | ;; 32 bit PCI driver code ;; |
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10 | ;; ;; |
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11 | ;; Version 0.3 April 9, 2007 ;; |
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12 | ;; Version 0.2 December 21st, 2002 ;; |
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13 | ;; ;; |
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14 | ;; Author: Victor Prodan, victorprodan@yahoo.com ;; |
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15 | ;; Mihailov Ilia, ghost.nsk@gmail.com ;; |
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16 | ;; Credits: ;; |
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17 | ;; Ralf Brown ;; |
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18 | ;; Mike Hibbett, mikeh@oceanfree.net ;; |
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19 | ;; ;; |
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20 | ;; See file COPYING for details ;; |
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21 | ;; ;; |
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22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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23 | |||
24 | |||
25 | ;*************************************************************************** |
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26 | ; Function |
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27 | ; pci_api: |
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28 | ; |
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29 | ; Description |
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30 | ; entry point for system PCI calls |
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31 | ;*************************************************************************** |
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7136 | dunkaist | 32 | ;mmio_pci_addr = 0x400 ; set actual PCI address here to activate user-MMIO |
2288 | clevermous | 33 | |
34 | iglobal |
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35 | align 4 |
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36 | f62call: |
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37 | dd pci_fn_0 |
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38 | dd pci_fn_1 |
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39 | dd pci_fn_2 |
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40 | dd pci_service_not_supported ;3 |
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41 | dd pci_read_reg ;4 byte |
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42 | dd pci_read_reg ;5 word |
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43 | dd pci_read_reg ;6 dword |
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44 | dd pci_service_not_supported ;7 |
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45 | dd pci_write_reg ;8 byte |
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46 | dd pci_write_reg ;9 word |
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47 | dd pci_write_reg ;10 dword |
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48 | if defined mmio_pci_addr |
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49 | dd pci_mmio_init ;11 |
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50 | dd pci_mmio_map ;12 |
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51 | dd pci_mmio_unmap ;13 |
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52 | end if |
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53 | |||
54 | endg |
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55 | |||
56 | align 4 |
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57 | |||
58 | pci_api: |
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59 | ;cross |
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60 | mov eax, ebx |
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61 | mov ebx, ecx |
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62 | mov ecx, edx |
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63 | |||
64 | cmp [pci_access_enabled], 1 |
||
65 | jne pci_service_not_supported |
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66 | |||
67 | movzx edx, al |
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68 | |||
69 | if defined mmio_pci_addr |
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70 | cmp al, 13 |
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71 | ja pci_service_not_supported |
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72 | else |
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73 | cmp al, 10 |
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74 | ja pci_service_not_supported |
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75 | end if |
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76 | |||
9910 | Doczom | 77 | call dword [f62call + edx*4] |
78 | mov dword [esp + SYSCALL_STACK.eax], eax |
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2288 | clevermous | 79 | ret |
80 | |||
81 | |||
82 | align 4 |
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83 | pci_api_drv: |
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84 | |||
85 | cmp [pci_access_enabled], 1 |
||
86 | jne .fail |
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87 | |||
88 | cmp eax, 2 |
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89 | ja .fail |
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90 | |||
9910 | Doczom | 91 | jmp dword [f62call + eax*4] |
2288 | clevermous | 92 | |
93 | .fail: |
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94 | or eax, -1 |
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95 | ret |
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96 | |||
97 | |||
98 | ;; ============================================ |
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99 | |||
100 | pci_fn_0: |
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101 | ; PCI function 0: get pci version (AH.AL) |
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9227 | dunkaist | 102 | movzx eax, [BOOT.pci_data.version] |
2288 | clevermous | 103 | ret |
104 | |||
105 | pci_fn_1: |
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106 | ; PCI function 1: get last bus in AL |
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9227 | dunkaist | 107 | mov al, [BOOT.pci_data.last_bus] |
2288 | clevermous | 108 | ret |
109 | |||
110 | pci_fn_2: |
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111 | ; PCI function 2: get pci access mechanism |
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9227 | dunkaist | 112 | mov al, [BOOT.pci_data.access_mechanism] |
2288 | clevermous | 113 | ret |
114 | |||
115 | pci_service_not_supported: |
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116 | or eax, -1 |
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9910 | Doczom | 117 | mov dword [esp + SYSCALL_STACK.eax], eax |
2288 | clevermous | 118 | ret |
119 | |||
120 | ;*************************************************************************** |
||
121 | ; Function |
||
122 | ; pci_make_config_cmd |
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123 | ; |
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124 | ; Description |
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125 | ; creates a command dword for use with the PCI bus |
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126 | ; bus # in ah |
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127 | ; device+func in bh (dddddfff) |
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128 | ; register in bl |
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129 | ; |
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130 | ; command dword returned in eax ( 10000000 bbbbbbbb dddddfff rrrrrr00 ) |
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131 | ;*************************************************************************** |
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132 | |||
133 | align 4 |
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134 | |||
135 | pci_make_config_cmd: |
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136 | shl eax, 8 ; move bus to bits 16-23 |
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137 | mov ax, bx ; combine all |
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138 | and eax, 0xffffff |
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139 | or eax, 0x80000000 |
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140 | ret |
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141 | |||
142 | ;*************************************************************************** |
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143 | ; Function |
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144 | ; pci_read_reg: |
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145 | ; |
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146 | ; Description |
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147 | ; read a register from the PCI config space into EAX/AX/AL |
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148 | ; IN: ah=bus,device+func=bh,register address=bl |
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149 | ; number of bytes to read (1,2,4) coded into AL, bits 0-1 |
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150 | ; (0 - byte, 1 - word, 2 - dword) |
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151 | ;*************************************************************************** |
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152 | |||
153 | align 4 |
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154 | |||
155 | pci_read_reg: |
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3393 | clevermous | 156 | push ebx esi |
9227 | dunkaist | 157 | cmp [BOOT.pci_data.access_mechanism], 2; what mechanism will we use? |
9910 | Doczom | 158 | je .pci_read_reg_2 |
2288 | clevermous | 159 | |
160 | ; mechanism 1 |
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3393 | clevermous | 161 | mov esi, eax ; save register size into ESI |
2288 | clevermous | 162 | and esi, 3 |
163 | |||
164 | call pci_make_config_cmd |
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165 | mov ebx, eax |
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166 | mov dx, 0xcf8 |
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167 | ; set up addressing to config data |
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168 | mov eax, ebx |
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169 | and al, 0xfc; make address dword-aligned |
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170 | out dx, eax |
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171 | ; get requested DWORD of config data |
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172 | mov dl, 0xfc |
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173 | and bl, 3 |
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174 | or dl, bl ; add to port address first 2 bits of register address |
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175 | |||
176 | or esi, esi |
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9910 | Doczom | 177 | jz .byte1 |
2288 | clevermous | 178 | cmp esi, 1 |
9910 | Doczom | 179 | jz .word1 |
2288 | clevermous | 180 | cmp esi, 2 |
9910 | Doczom | 181 | jz .dword1 |
182 | jmp .fin_read1 |
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2288 | clevermous | 183 | |
9910 | Doczom | 184 | .byte1: |
2288 | clevermous | 185 | in al, dx |
9910 | Doczom | 186 | jmp .fin_read1 |
187 | .word1: |
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2288 | clevermous | 188 | in ax, dx |
9910 | Doczom | 189 | jmp .fin_read1 |
190 | .dword1: |
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2288 | clevermous | 191 | in eax, dx |
9910 | Doczom | 192 | .fin_read1: |
3393 | clevermous | 193 | pop esi ebx |
2288 | clevermous | 194 | ret |
195 | |||
9910 | Doczom | 196 | .pci_read_reg_2: |
197 | |||
2288 | clevermous | 198 | test bh, 128 ;mech#2 only supports 16 devices per bus |
9910 | Doczom | 199 | jnz .pci_read_reg_err |
2288 | clevermous | 200 | |
3393 | clevermous | 201 | mov esi, eax ; save register size into ESI |
2288 | clevermous | 202 | and esi, 3 |
203 | |||
4599 | clevermous | 204 | mov dx, 0xcfa |
2288 | clevermous | 205 | |
206 | ; out 0xcfa,bus |
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207 | mov al, ah |
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208 | out dx, al |
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209 | ; out 0xcf8,0x80 |
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210 | mov dl, 0xf8 |
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211 | mov al, 0x80 |
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212 | out dx, al |
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213 | ; compute addr |
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214 | shr bh, 3; func is ignored in mechanism 2 |
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215 | or bh, 0xc0 |
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216 | mov dx, bx |
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217 | |||
218 | or esi, esi |
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9910 | Doczom | 219 | jz .byte2 |
2288 | clevermous | 220 | cmp esi, 1 |
9910 | Doczom | 221 | jz .word2 |
2288 | clevermous | 222 | cmp esi, 2 |
9910 | Doczom | 223 | jz .dword2 |
224 | jmp .fin_read2 |
||
2288 | clevermous | 225 | |
9910 | Doczom | 226 | .byte2: |
2288 | clevermous | 227 | in al, dx |
9910 | Doczom | 228 | jmp .fin_read2 |
229 | .word2: |
||
2288 | clevermous | 230 | in ax, dx |
9910 | Doczom | 231 | jmp .fin_read2 |
232 | .dword2: |
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2288 | clevermous | 233 | in eax, dx |
9910 | Doczom | 234 | .fin_read2: |
2288 | clevermous | 235 | |
3393 | clevermous | 236 | pop esi ebx |
2288 | clevermous | 237 | ret |
238 | |||
9910 | Doczom | 239 | .pci_read_reg_err: |
2288 | clevermous | 240 | xor eax, eax |
241 | dec eax |
||
3393 | clevermous | 242 | pop esi ebx |
2288 | clevermous | 243 | ret |
244 | |||
245 | |||
246 | ;*************************************************************************** |
||
247 | ; Function |
||
248 | ; pci_write_reg: |
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249 | ; |
||
250 | ; Description |
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251 | ; write a register from ECX/CX/CL into the PCI config space |
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252 | ; IN: ah=bus,device+func=bh,register address (dword aligned)=bl, |
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253 | ; value to write in ecx |
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254 | ; number of bytes to write (1,2,4) coded into AL, bits 0-1 |
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255 | ; (0 - byte, 1 - word, 2 - dword) |
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256 | ;*************************************************************************** |
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257 | |||
258 | align 4 |
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259 | |||
260 | pci_write_reg: |
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3393 | clevermous | 261 | push esi ebx |
9227 | dunkaist | 262 | cmp [BOOT.pci_data.access_mechanism], 2; what mechanism will we use? |
2288 | clevermous | 263 | je pci_write_reg_2 |
264 | |||
265 | ; mechanism 1 |
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3393 | clevermous | 266 | mov esi, eax ; save register size into ESI |
2288 | clevermous | 267 | and esi, 3 |
268 | |||
269 | call pci_make_config_cmd |
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270 | mov ebx, eax |
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271 | mov dx, 0xcf8 |
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272 | ; set up addressing to config data |
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273 | mov eax, ebx |
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274 | and al, 0xfc; make address dword-aligned |
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275 | out dx, eax |
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276 | ; write DWORD of config data |
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277 | mov dl, 0xfc |
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278 | and bl, 3 |
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279 | or dl, bl |
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280 | mov eax, ecx |
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281 | |||
282 | or esi, esi |
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9910 | Doczom | 283 | jz .byte1 |
2288 | clevermous | 284 | cmp esi, 1 |
9910 | Doczom | 285 | jz .word1 |
2288 | clevermous | 286 | cmp esi, 2 |
9910 | Doczom | 287 | jz .dword1 |
288 | jmp .fin_write1 |
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2288 | clevermous | 289 | |
9910 | Doczom | 290 | .byte1: |
2288 | clevermous | 291 | out dx, al |
9910 | Doczom | 292 | jmp .fin_write1 |
293 | .word1: |
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2288 | clevermous | 294 | out dx, ax |
9910 | Doczom | 295 | jmp .fin_write1 |
296 | .dword1: |
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2288 | clevermous | 297 | out dx, eax |
9910 | Doczom | 298 | .fin_write1: |
2288 | clevermous | 299 | |
300 | xor eax, eax |
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3393 | clevermous | 301 | pop ebx esi |
2288 | clevermous | 302 | |
303 | ret |
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304 | pci_write_reg_2: |
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305 | |||
306 | test bh, 128 ;mech#2 only supports 16 devices per bus |
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9910 | Doczom | 307 | jnz .pci_write_reg_err |
2288 | clevermous | 308 | |
309 | |||
3393 | clevermous | 310 | mov esi, eax ; save register size into ESI |
2288 | clevermous | 311 | and esi, 3 |
312 | |||
4599 | clevermous | 313 | mov dx, 0xcfa |
2288 | clevermous | 314 | ; out 0xcfa,bus |
315 | mov al, ah |
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316 | out dx, al |
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317 | ; out 0xcf8,0x80 |
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318 | mov dl, 0xf8 |
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319 | mov al, 0x80 |
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320 | out dx, al |
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321 | ; compute addr |
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322 | shr bh, 3; func is ignored in mechanism 2 |
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323 | or bh, 0xc0 |
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324 | mov dx, bx |
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325 | ; write register |
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326 | mov eax, ecx |
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327 | |||
328 | or esi, esi |
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9910 | Doczom | 329 | jz .byte2 |
2288 | clevermous | 330 | cmp esi, 1 |
9910 | Doczom | 331 | jz .word2 |
2288 | clevermous | 332 | cmp esi, 2 |
9910 | Doczom | 333 | jz .dword2 |
334 | jmp .fin_write2 |
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2288 | clevermous | 335 | |
9910 | Doczom | 336 | .byte2: |
2288 | clevermous | 337 | out dx, al |
9910 | Doczom | 338 | jmp .fin_write2 |
339 | .word2: |
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2288 | clevermous | 340 | out dx, ax |
9910 | Doczom | 341 | jmp .fin_write2 |
342 | .dword2: |
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2288 | clevermous | 343 | out dx, eax |
9910 | Doczom | 344 | .fin_write2: |
2288 | clevermous | 345 | |
346 | xor eax, eax |
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3393 | clevermous | 347 | pop ebx esi |
2288 | clevermous | 348 | ret |
349 | |||
9910 | Doczom | 350 | .pci_write_reg_err: |
2288 | clevermous | 351 | xor eax, eax |
352 | dec eax |
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3393 | clevermous | 353 | pop ebx esi |
2288 | clevermous | 354 | ret |
355 | |||
356 | if defined mmio_pci_addr ; must be set above |
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357 | ;*************************************************************************** |
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358 | ; Function |
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359 | ; pci_mmio_init |
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360 | ; |
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361 | ; Description |
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362 | ; IN: bx = device's PCI bus address (bbbbbbbbdddddfff) |
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363 | ; Returns eax = user heap space available (bytes) |
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364 | ; Error codes |
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365 | ; eax = -1 : PCI user access blocked, |
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366 | ; eax = -2 : device not registered for uMMIO service |
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367 | ; eax = -3 : user heap initialization failure |
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368 | ;*************************************************************************** |
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369 | pci_mmio_init: |
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370 | cmp bx, mmio_pci_addr |
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371 | jz @f |
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372 | mov eax, -2 |
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373 | ret |
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374 | @@: |
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375 | call init_heap ; (if not initialized yet) |
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376 | or eax, eax |
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377 | jz @f |
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378 | ret |
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379 | @@: |
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380 | mov eax, -3 |
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381 | ret |
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382 | |||
383 | |||
384 | ;*************************************************************************** |
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385 | ; Function |
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386 | ; pci_mmio_map |
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387 | ; |
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388 | ; Description |
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389 | ; maps a block of PCI memory to user-accessible linear address |
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390 | ; |
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391 | ; WARNING! This VERY EXPERIMENTAL service is for one chosen PCI device only! |
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392 | ; The target device address should be set in kernel var mmio_pci_addr |
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393 | ; |
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394 | ; IN: ah = BAR#; |
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395 | ; IN: ebx = block size (bytes); |
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396 | ; IN: ecx = offset in MMIO block (in 4K-pages, to avoid misaligned pages); |
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397 | ; |
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398 | ; Returns eax = MMIO block's linear address in the userspace (if no error) |
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399 | ; |
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400 | ; |
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401 | ; Error codes |
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402 | ; eax = -1 : user access to PCI blocked, |
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403 | ; eax = -2 : an invalid BAR register referred |
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404 | ; eax = -3 : no i/o space on that BAR |
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405 | ; eax = -4 : a port i/o BAR register referred |
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406 | ; eax = -5 : dynamic userspace allocation problem |
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407 | ;*************************************************************************** |
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408 | |||
409 | pci_mmio_map: |
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410 | and edx, 0x0ffff |
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411 | cmp ah, 6 |
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412 | jc .bar_0_5 |
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413 | jz .bar_rom |
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414 | mov eax, -2 |
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415 | ret |
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416 | .bar_rom: |
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417 | mov ah, 8 ; bar6 = Expansion ROM base address |
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418 | .bar_0_5: |
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419 | push ecx |
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420 | add ebx, 4095 |
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421 | and ebx, -4096 |
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422 | push ebx |
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423 | mov bl, ah ; bl = BAR# (0..5), however bl=8 for BAR6 |
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424 | shl bl, 1 |
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425 | shl bl, 1 |
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426 | add bl, 0x10; now bl = BAR offset in PCI config. space |
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427 | mov ax, mmio_pci_addr |
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428 | mov bh, al ; bh = dddddfff |
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429 | mov al, 2 ; al : DW to read |
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430 | call pci_read_reg |
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431 | or eax, eax |
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432 | jnz @f |
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433 | mov eax, -3 ; empty I/O space |
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9910 | Doczom | 434 | jmp .mmio_ret_fail |
2288 | clevermous | 435 | @@: |
436 | test eax, 1 |
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437 | jz @f |
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438 | mov eax, -4 ; damned ports (not MMIO space) |
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9910 | Doczom | 439 | jmp .mmio_ret_fail |
2288 | clevermous | 440 | @@: |
441 | pop ecx ; ecx = block size, bytes (expanded to whole page) |
||
442 | mov ebx, ecx; user_alloc destroys eax, ecx, edx, but saves ebx |
||
443 | and eax, 0xFFFFFFF0 |
||
444 | push eax ; store MMIO physical address + keep 2DWords in the stack |
||
445 | stdcall user_alloc, ecx |
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446 | or eax, eax |
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9910 | Doczom | 447 | jnz .mmio_map_over |
2288 | clevermous | 448 | mov eax, -5 ; problem with page allocation |
449 | |||
9910 | Doczom | 450 | .mmio_ret_fail: |
2288 | clevermous | 451 | pop ecx |
452 | pop edx |
||
453 | ret |
||
454 | |||
9910 | Doczom | 455 | .mmio_map_over: |
2288 | clevermous | 456 | mov ecx, ebx; ecx = size (bytes, expanded to whole page) |
457 | shr ecx, 12 ; ecx = number of pages |
||
458 | mov ebx, eax; ebx = linear address |
||
459 | pop eax ; eax = MMIO start |
||
460 | pop edx ; edx = MMIO shift (pages) |
||
461 | shl edx, 12 ; edx = MMIO shift (bytes) |
||
462 | add eax, edx; eax = uMMIO physical address |
||
463 | or eax, PG_SHARED |
||
464 | or eax, PG_UW |
||
465 | or eax, PG_NOCACHE |
||
466 | mov edi, ebx |
||
467 | call commit_pages |
||
468 | mov eax, edi |
||
469 | ret |
||
470 | |||
471 | ;*************************************************************************** |
||
472 | ; Function |
||
473 | ; pci_mmio_unmap_page |
||
474 | ; |
||
475 | ; Description |
||
476 | ; unmaps the linear space previously tied to a PCI memory block |
||
477 | ; |
||
478 | ; IN: ebx = linear address of space previously allocated by pci_mmio_map |
||
479 | ; returns eax = 1 if successfully unmapped |
||
480 | ; |
||
481 | ; Error codes |
||
482 | ; eax = -1 if no user PCI access allowed, |
||
483 | ; eax = 0 if unmapping failed |
||
484 | ;*************************************************************************** |
||
485 | |||
486 | pci_mmio_unmap: |
||
487 | stdcall user_free, ebx |
||
488 | ret |
||
489 | |||
490 | end if |
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491 | |||
492 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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493 | uglobal |
||
494 | align 4 |
||
495 | ; VendID (2), DevID (2), Revision = 0 (1), Class Code (3), FNum (1), Bus (1) |
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496 | pci_emu_dat: |
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497 | times 30*10 db 0 |
||
498 | endg |
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499 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
||
500 | align 4 |
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501 | sys_pcibios: |
||
502 | cmp [pci_access_enabled], 1 |
||
503 | jne .unsupported_func |
||
504 | cmp [pci_bios_entry], 0 |
||
505 | jz .emulate_bios |
||
506 | |||
507 | push ds |
||
508 | mov ax, pci_data_sel |
||
509 | mov ds, ax |
||
510 | mov eax, ebp |
||
511 | mov ah, 0B1h |
||
512 | call pword [cs:pci_bios_entry] |
||
513 | pop ds |
||
514 | |||
515 | jmp .return |
||
516 | ;-=-=-=-=-=-=-=-= |
||
517 | .emulate_bios: |
||
518 | cmp ebp, 1 ; PCI_FUNCTION_ID |
||
519 | jnz .not_PCI_BIOS_PRESENT |
||
520 | mov edx, 'PCI ' |
||
9227 | dunkaist | 521 | mov al, [BOOT.pci_data.access_mechanism] |
522 | mov bx, word[BOOT.pci_data.version] |
||
523 | mov cl, [BOOT.pci_data.last_bus] |
||
2288 | clevermous | 524 | xor ah, ah |
525 | jmp .return_abcd |
||
526 | |||
527 | .not_PCI_BIOS_PRESENT: |
||
528 | cmp ebp, 2 ; FIND_PCI_DEVICE |
||
529 | jne .not_FIND_PCI_DEVICE |
||
530 | mov ebx, pci_emu_dat |
||
531 | ..nxt: |
||
532 | cmp [ebx], dx |
||
533 | jne ..no |
||
534 | cmp [ebx + 2], cx |
||
535 | jne ..no |
||
536 | dec si |
||
537 | jns ..no |
||
538 | mov bx, [ebx + 4] |
||
539 | xor ah, ah |
||
540 | jmp .return_ab |
||
541 | ..no: |
||
542 | cmp word[ebx], 0 |
||
543 | je ..dev_not_found |
||
544 | add ebx, 10 |
||
545 | jmp ..nxt |
||
546 | ..dev_not_found: |
||
547 | mov ah, 0x86 ; DEVICE_NOT_FOUND |
||
548 | jmp .return_a |
||
549 | |||
550 | .not_FIND_PCI_DEVICE: |
||
551 | cmp ebp, 3 ; FIND_PCI_CLASS_CODE |
||
552 | jne .not_FIND_PCI_CLASS_CODE |
||
553 | mov esi, pci_emu_dat |
||
554 | shl ecx, 8 |
||
555 | ..nxt2: |
||
556 | cmp [esi], ecx |
||
557 | jne ..no2 |
||
558 | mov bx, [esi] |
||
559 | xor ah, ah |
||
560 | jmp .return_ab |
||
561 | ..no2: |
||
562 | cmp dword[esi], 0 |
||
563 | je ..dev_not_found |
||
564 | add esi, 10 |
||
565 | jmp ..nxt2 |
||
566 | |||
567 | .not_FIND_PCI_CLASS_CODE: |
||
568 | cmp ebp, 8 ; READ_CONFIG_* |
||
569 | jb .not_READ_CONFIG |
||
570 | cmp ebp, 0x0A |
||
571 | ja .not_READ_CONFIG |
||
572 | mov eax, ebp |
||
573 | mov ah, bh |
||
574 | mov edx, edi |
||
575 | mov bh, bl |
||
576 | mov bl, dl |
||
577 | call pci_read_reg |
||
578 | mov ecx, eax |
||
579 | xor ah, ah ; SUCCESSFUL |
||
580 | jmp .return_abc |
||
581 | .not_READ_CONFIG: |
||
582 | cmp ebp, 0x0B ; WRITE_CONFIG_* |
||
583 | jb .not_WRITE_CONFIG |
||
584 | cmp ebp, 0x0D |
||
585 | ja .not_WRITE_CONFIG |
||
586 | lea eax, [ebp+1] |
||
587 | mov ah, bh |
||
588 | mov edx, edi |
||
589 | mov bh, bl |
||
590 | mov bl, dl |
||
591 | call pci_write_reg |
||
592 | xor ah, ah ; SUCCESSFUL |
||
593 | jmp .return_abc |
||
594 | .not_WRITE_CONFIG: |
||
595 | .unsupported_func: |
||
596 | mov ah, 0x81 ; FUNC_NOT_SUPPORTED |
||
597 | .return: |
||
9910 | Doczom | 598 | mov dword[esp + SYSCALL_STACK.edi], edi |
599 | mov dword[esp + SYSCALL_STACK.esi], esi |
||
2288 | clevermous | 600 | .return_abcd: |
9910 | Doczom | 601 | mov dword[esp + SYSCALL_STACK.edx], edx |
2288 | clevermous | 602 | .return_abc: |
9910 | Doczom | 603 | mov dword[esp + SYSCALL_STACK.ecx], ecx |
2288 | clevermous | 604 | .return_ab: |
9910 | Doczom | 605 | mov dword[esp + SYSCALL_STACK.ebx], ebx |
2288 | clevermous | 606 | .return_a: |
9910 | Doczom | 607 | mov dword[esp + SYSCALL_STACK.eax], eax |
2288 | clevermous | 608 | ret |
3393 | clevermous | 609 | |
610 | proc pci_enum |
||
611 | push ebp |
||
612 | mov ebp, esp |
||
613 | push 0 |
||
614 | virtual at ebp-4 |
||
615 | .devfn db ? |
||
616 | .bus db ? |
||
617 | end virtual |
||
618 | .loop: |
||
619 | mov ah, [.bus] |
||
620 | mov al, 2 |
||
621 | mov bh, [.devfn] |
||
622 | mov bl, 0 |
||
623 | call pci_read_reg |
||
624 | cmp eax, 0xFFFFFFFF |
||
625 | jnz .has_device |
||
626 | test byte [.devfn], 7 |
||
627 | jnz .next_func |
||
628 | jmp .no_device |
||
629 | .has_device: |
||
630 | push eax |
||
3598 | clevermous | 631 | movi eax, sizeof.PCIDEV |
3393 | clevermous | 632 | call malloc |
633 | pop ecx |
||
634 | test eax, eax |
||
635 | jz .nomemory |
||
636 | mov edi, eax |
||
637 | mov [edi+PCIDEV.vendor_device_id], ecx |
||
638 | mov eax, pcidev_list |
||
639 | mov ecx, [eax+PCIDEV.bk] |
||
640 | mov [edi+PCIDEV.bk], ecx |
||
641 | mov [edi+PCIDEV.fd], eax |
||
642 | mov [ecx+PCIDEV.fd], edi |
||
643 | mov [eax+PCIDEV.bk], edi |
||
644 | mov eax, dword [.devfn] |
||
4418 | clevermous | 645 | mov dword [edi+PCIDEV.devfn], eax |
646 | mov dword [edi+PCIDEV.owner], 0 |
||
3393 | clevermous | 647 | mov bh, al |
648 | mov al, 2 |
||
649 | mov bl, 8 |
||
650 | call pci_read_reg |
||
651 | shr eax, 8 |
||
652 | mov [edi+PCIDEV.class], eax |
||
653 | test byte [.devfn], 7 |
||
654 | jnz .next_func |
||
655 | mov ah, [.bus] |
||
656 | mov al, 0 |
||
657 | mov bh, [.devfn] |
||
658 | mov bl, 0Eh |
||
659 | call pci_read_reg |
||
660 | test al, al |
||
661 | js .next_func |
||
662 | .no_device: |
||
663 | or byte [.devfn], 7 |
||
664 | .next_func: |
||
665 | inc dword [.devfn] |
||
666 | mov ah, [.bus] |
||
9227 | dunkaist | 667 | cmp ah, [BOOT.pci_data.last_bus] |
3393 | clevermous | 668 | jbe .loop |
669 | .nomemory: |
||
670 | leave |
||
671 | ret |
||
672 | endp |
||
4453 | clevermous | 673 | |
674 | ; Export for drivers. Just returns the pointer to the pci-devices list. |
||
675 | proc get_pcidev_list |
||
676 | mov eax, pcidev_list |
||
677 | ret |
||
678 | endp |
||
9567 | Doczom | 679 | |
680 | |||
681 | align 4 |
||
682 | proc pci_read32 stdcall, bus:dword, devfn:dword, reg:dword |
||
683 | push ebx |
||
684 | xor eax, eax |
||
685 | xor ebx, ebx |
||
686 | mov ah, byte [bus] |
||
687 | mov al, 6 |
||
688 | mov bh, byte [devfn] |
||
689 | mov bl, byte [reg] |
||
690 | call pci_read_reg |
||
691 | pop ebx |
||
692 | ret |
||
693 | endp |
||
694 | |||
695 | align 4 |
||
696 | proc pci_read16 stdcall, bus:dword, devfn:dword, reg:dword |
||
697 | push ebx |
||
698 | xor eax, eax |
||
699 | xor ebx, ebx |
||
700 | mov ah, byte [bus] |
||
701 | mov al, 5 |
||
702 | mov bh, byte [devfn] |
||
703 | mov bl, byte [reg] |
||
704 | call pci_read_reg |
||
705 | pop ebx |
||
706 | ret |
||
707 | endp |
||
708 | |||
709 | align 4 |
||
710 | proc pci_read8 stdcall, bus:dword, devfn:dword, reg:dword |
||
711 | push ebx |
||
712 | xor eax, eax |
||
713 | xor ebx, ebx |
||
714 | mov ah, byte [bus] |
||
715 | mov al, 4 |
||
716 | mov bh, byte [devfn] |
||
717 | mov bl, byte [reg] |
||
718 | call pci_read_reg |
||
719 | pop ebx |
||
720 | ret |
||
721 | endp |
||
722 | |||
723 | align 4 |
||
724 | proc pci_write8 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
||
725 | push ebx |
||
726 | xor eax, eax |
||
727 | xor ebx, ebx |
||
728 | mov ah, byte [bus] |
||
729 | mov al, 8 |
||
730 | mov bh, byte [devfn] |
||
731 | mov bl, byte [reg] |
||
732 | mov ecx, [val] |
||
733 | call pci_write_reg |
||
734 | pop ebx |
||
735 | ret |
||
736 | endp |
||
737 | |||
738 | align 4 |
||
739 | proc pci_write16 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
||
740 | push ebx |
||
741 | xor eax, eax |
||
742 | xor ebx, ebx |
||
743 | mov ah, byte [bus] |
||
744 | mov al, 9 |
||
745 | mov bh, byte [devfn] |
||
746 | mov bl, byte [reg] |
||
747 | mov ecx, [val] |
||
748 | call pci_write_reg |
||
749 | pop ebx |
||
750 | ret |
||
751 | endp |
||
752 | |||
753 | align 4 |
||
754 | proc pci_write32 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
||
755 | push ebx |
||
756 | xor eax, eax |
||
757 | xor ebx, ebx |
||
758 | mov ah, byte [bus] |
||
759 | mov al, 10 |
||
760 | mov bh, byte [devfn] |
||
761 | mov bl, byte [reg] |
||
762 | mov ecx, [val] |
||
763 | call pci_write_reg |
||
764 | pop ebx |
||
765 | ret |
||
10051 | ace_dent | 766 | endp |