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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | #include <ll/i386/hw-instr.h> |
| 2 | #include <ll/i386/hw-data.h> |
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| 3 | #include <ll/i386/hw-arch.h> |
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| 4 | #include <ll/i386/hw-io.h> |
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| 5 | |||
| 6 | #include <drivers/llpci.h> |
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| 7 | |||
| 8 | int (*pcibios_read_config_byte)(BYTE bus, BYTE dev, BYTE where, BYTE *val); |
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| 9 | int (*pcibios_read_config_word)(BYTE bus, BYTE dev, BYTE where, WORD *val); |
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| 10 | int (*pcibios_read_config_dword)(BYTE bus, BYTE dev, BYTE where, DWORD *val); |
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| 11 | int (*pcibios_write_config_byte)(BYTE bus, BYTE dev, BYTE where, BYTE val); |
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| 12 | int (*pcibios_write_config_word)(BYTE bus, BYTE dev, BYTE where, WORD val); |
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| 13 | int (*pcibios_write_config_dword)(BYTE bus, BYTE dev, BYTE where, DWORD val); |
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| 14 | |||
| 15 | static int PCItype = 0; |
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| 16 | |||
| 17 | /* LowLevel Functions */ |
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| 18 | int pci_conf1_read_config_dword(BYTE bus, BYTE dev, BYTE where, DWORD *val) |
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| 19 | { |
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| 20 | if (where & 3) |
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| 21 | return -1; |
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| 22 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 23 | *val = inpd(0x0CFC); |
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| 24 | return 1; |
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| 25 | } |
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| 26 | |||
| 27 | int pci_conf2_read_config_dword(BYTE bus, BYTE dev, BYTE where, DWORD *val) |
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| 28 | { |
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| 29 | if (dev & 0x80) |
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| 30 | return -1; |
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| 31 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 32 | outpw(0xCFA, bus); |
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| 33 | *val = inpd((0xC000 | ((dev & 0x78) << 5)) + where); |
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| 34 | outpw(0xCF8,0); |
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| 35 | return 1; |
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| 36 | } |
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| 37 | |||
| 38 | int pci_conf1_read_config_byte(BYTE bus, BYTE dev, BYTE where, BYTE *val) |
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| 39 | { |
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| 40 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 41 | *val = inp(0x0CFC + (where & 3)); |
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| 42 | return 1; |
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| 43 | } |
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| 44 | |||
| 45 | int pci_conf2_read_config_byte(BYTE bus, BYTE dev, BYTE where, BYTE *val) |
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| 46 | { |
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| 47 | if (dev & 0x80) |
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| 48 | return -1; |
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| 49 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 50 | outpw(0xCFA, bus); |
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| 51 | *val = inp((0xC000 | ((dev & 0x78) << 5)) + where); |
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| 52 | outpw(0xCF8,0); |
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| 53 | return 1; |
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| 54 | } |
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| 55 | int pci_conf1_read_config_word(BYTE bus, BYTE dev, BYTE where, WORD *val) |
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| 56 | { |
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| 57 | if (where & 1) |
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| 58 | return -1; |
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| 59 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 60 | *val = inpw(0x0CFC + (where & 2)); |
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| 61 | return 1; |
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| 62 | } |
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| 63 | |||
| 64 | int pci_conf2_read_config_word(BYTE bus, BYTE dev, BYTE where, WORD *val) |
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| 65 | { |
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| 66 | if (dev & 0x80) |
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| 67 | return -1; |
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| 68 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 69 | outpw(0xCFA, bus); |
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| 70 | *val = inpw((0xC000 | ((dev & 0x78) << 5)) + where); |
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| 71 | /* *val = inpw(0xC000 | ((dev & 0x78) << 5) + where); */ |
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| 72 | outpw(0xCF8,0); |
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| 73 | return 1; |
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| 74 | } |
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| 75 | |||
| 76 | |||
| 77 | int pci_conf1_write_config_dword(BYTE bus, BYTE dev, BYTE where, DWORD val) |
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| 78 | { |
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| 79 | if (where & 3) |
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| 80 | return -1; |
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| 81 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 82 | outpd(0x0CFC, val); |
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| 83 | return 1; |
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| 84 | } |
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| 85 | |||
| 86 | int pci_conf2_write_config_dword(BYTE bus, BYTE dev, BYTE where, DWORD val) |
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| 87 | { |
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| 88 | if (dev & 0x80) |
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| 89 | return -1; |
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| 90 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 91 | outpw(0xCFA, bus); |
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| 92 | outpd((0xC000 | ((dev & 0x78) << 5)) + where, val); |
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| 93 | outpw(0xCF8,0); |
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| 94 | return 1; |
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| 95 | } |
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| 96 | |||
| 97 | int pci_conf1_write_config_byte(BYTE bus, BYTE dev, BYTE where, BYTE val) |
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| 98 | { |
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| 99 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 100 | outp(0x0CFC + (where & 3), val); |
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| 101 | return 1; |
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| 102 | } |
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| 103 | |||
| 104 | int pci_conf2_write_config_byte(BYTE bus, BYTE dev, BYTE where, BYTE val) |
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| 105 | { |
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| 106 | if (dev & 0x80) |
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| 107 | return -1; |
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| 108 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 109 | outpw(0xCFA, bus); |
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| 110 | outp((0xC000 | ((dev & 0x78) << 5)) + where, val); |
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| 111 | outpw(0xCF8,0); |
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| 112 | return 1; |
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| 113 | } |
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| 114 | int pci_conf1_write_config_word(BYTE bus, BYTE dev, BYTE where, WORD val) |
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| 115 | { |
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| 116 | if (where & 1) |
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| 117 | return -1; |
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| 118 | outpd(0x0CF8, 0x80000000 | (bus <<16) | (dev << 8) | (where & ~3)); |
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| 119 | outpw(0x0CFC + (where & 2), val); |
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| 120 | return 1; |
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| 121 | } |
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| 122 | |||
| 123 | int pci_conf2_write_config_word(BYTE bus, BYTE dev, BYTE where, WORD val) |
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| 124 | { |
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| 125 | if (dev & 0x80) |
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| 126 | return -1; |
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| 127 | outpw(0xCF8, (((dev & 7) << 1) | 0xf0)); |
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| 128 | outpw(0xCFA, bus); |
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| 129 | outpw((0xC000 | ((dev & 0x78) << 5)) + where, val); |
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| 130 | outpw(0xCF8,0); |
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| 131 | return 1; |
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| 132 | } |
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| 133 | |||
| 134 | |||
| 135 | |||
| 136 | int pci_check_direct() |
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| 137 | { |
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| 138 | int PCItype; |
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| 139 | DWORD tmp; |
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| 140 | |||
| 141 | PCItype = 0; |
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| 142 | outp(0xCFB, 0x01); |
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| 143 | tmp = inpd(0xCF8); |
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| 144 | outpd(0xCF8, 0x80000000); |
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| 145 | if (inpd(0xCF8) == 0x80000000) { |
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| 146 | outpd(0xCF8, tmp); |
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| 147 | pcibios_read_config_dword = pci_conf1_read_config_dword; |
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| 148 | pcibios_read_config_word = pci_conf1_read_config_word; |
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| 149 | pcibios_read_config_byte = pci_conf1_read_config_byte; |
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| 150 | |||
| 151 | pcibios_write_config_dword = pci_conf1_write_config_dword; |
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| 152 | pcibios_write_config_word = pci_conf1_write_config_word; |
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| 153 | pcibios_write_config_byte = pci_conf1_write_config_byte; |
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| 154 | PCItype = 1; |
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| 155 | } |
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| 156 | outpw(0x0CF8,tmp); |
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| 157 | |||
| 158 | outp(0xCFB, 0); |
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| 159 | outp(0xCF8, 0); |
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| 160 | outp(0x0CFA,0); |
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| 161 | if ((inp(0x0CF8) == 0) && (inp(0x0CFA) == 0)) { |
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| 162 | pcibios_read_config_dword = pci_conf2_read_config_dword; |
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| 163 | pcibios_read_config_word = pci_conf2_read_config_word; |
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| 164 | pcibios_read_config_byte = pci_conf2_read_config_byte; |
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| 165 | |||
| 166 | pcibios_write_config_dword = pci_conf2_write_config_dword; |
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| 167 | pcibios_write_config_word = pci_conf2_write_config_word; |
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| 168 | pcibios_write_config_byte = pci_conf2_write_config_byte; |
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| 169 | PCItype = 2; |
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| 170 | } |
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| 171 | return PCItype; |
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| 172 | } |
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| 173 | |||
| 174 | /*__________________________________________________________________________*/ |
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| 175 | /*__________________________________________________________________________*/ |
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| 176 | int pcibios_present(void) |
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| 177 | { |
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| 178 | return (PCItype != 0); |
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| 179 | } |
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| 180 | |||
| 181 | int pcibios_init(void) |
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| 182 | { |
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| 183 | if (ll_arch.x86.cpu < 3) { |
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| 184 | return -1; /* CPU < 386 --> No PCI */ |
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| 185 | } |
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| 186 | PCItype = pci_check_direct(); |
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| 187 | if (PCItype == 0) { |
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| 188 | return -1; |
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| 189 | } |
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| 190 | return 1; |
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| 191 | } |