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4522 | hidnplayr | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2014. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; GNU GENERAL PUBLIC LICENSE ;; |
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7 | ;; Version 2, June 1991 ;; |
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8 | ;; ;; |
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9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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10 | |||
11 | struct PCI_header |
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12 | |||
13 | vendor_id dw ? |
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14 | device_id dw ? |
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15 | command dw ? |
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16 | status dw ? |
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17 | revision_id db ? |
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18 | prog_if db ? |
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19 | subclass db ? |
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20 | class_code db ? |
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21 | cache_line_size db ? |
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22 | latency_timer db ? |
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23 | header_type db ? |
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24 | bist db ? |
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25 | |||
26 | ends |
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27 | |||
28 | struct PCI_header00 PCI_header |
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29 | |||
30 | base_addr_0 dd ? |
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31 | base_addr_1 dd ? |
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32 | base_addr_2 dd ? |
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33 | base_addr_3 dd ? |
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34 | base_addr_4 dd ? |
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35 | base_addr_5 dd ? |
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36 | cardbus_cis_ptr dd ? |
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37 | subsys_vendor dw ? |
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38 | subsys_id dw ? |
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39 | exp_rom_addr dd ? |
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40 | cap_ptr db ? |
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41 | reserved rb 7 |
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42 | interrupt_line db ? |
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43 | interrupt_pin db ? |
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44 | min_grant db ? |
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45 | max_latency db ? |
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46 | |||
47 | ends |
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48 | |||
49 | ; Base address bits |
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50 | PCI_BASE_ADDRESS_SPACE_IO = 0x01 |
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51 | PCI_BASE_ADDRESS_IO_MASK = 0xFFFFFFFC |
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52 | PCI_BASE_ADDRESS_MEM_MASK = 0xFFFFFFF0 |
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53 | |||
54 | ; command bits |
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55 | PCI_CMD_PIO = 1 ; bit0: io space control |
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56 | PCI_CMD_MMIO = 2 ; bit1: memory space control |
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57 | PCI_CMD_MASTER = 4 ; bit2: device acts as a PCI master |
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58 | |||
59 | |||
60 | if used PCI_find_io |
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61 | proc PCI_find_io stdcall bus, dev |
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62 | |||
63 | push esi |
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64 | xor eax, eax |
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65 | mov esi, PCI_BASE_ADDRESS_0 |
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66 | .check: |
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67 | invoke PciRead32, [bus], [dev], esi |
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68 | |||
69 | test eax, PCI_BASE_ADDRESS_IO_MASK |
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70 | jz .inc |
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71 | |||
72 | test eax, PCI_BASE_ADDRESS_SPACE_IO |
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73 | jz .inc |
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74 | |||
75 | and eax, PCI_BASE_ADDRESS_IO_MASK |
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76 | pop esi |
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77 | ret |
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78 | |||
79 | .inc: |
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80 | add esi, 4 |
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81 | cmp esi, PCI_BASE_ADDRESS_5 |
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82 | jbe .check |
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83 | pop esi |
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84 | xor eax, eax |
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85 | ret |
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86 | |||
87 | endp |
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88 | end if |
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89 | |||
90 | |||
91 | if used PCI_find_mmio32 |
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92 | proc PCI_find_mmio32 stdcall bus, dev |
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93 | |||
94 | push esi |
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95 | mov esi, PCI_header00.base_addr_0 |
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96 | .check: |
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97 | invoke PciRead32, [bus], [dev], esi |
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98 | |||
99 | test eax, PCI_BASE_ADDRESS_SPACE_IO ; mmio address? |
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100 | jnz .inc |
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101 | |||
102 | test eax, 100b ; 64 bit? |
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103 | jnz .inc |
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104 | and eax, not 1111b |
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105 | pop esi |
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106 | ret |
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107 | |||
108 | .inc: |
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109 | add esi, 4 |
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110 | cmp esi, PCI_header00.base_addr_5 |
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111 | jbe .check |
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112 | xor eax, eax |
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113 | pop esi |
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114 | ret |
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115 | |||
116 | endp |
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117 | end if |