[0ebbf66] | 1 | /* |
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| 2 | * This software is Copyright (C) 1998 by T.sqware - all rights limited |
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| 3 | * It is provided in to the public domain "as is", can be freely modified |
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| 4 | * as far as this copyight notice is kept unchanged, but does not imply |
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| 5 | * an endorsement by T.sqware of the product in which it is included. |
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| 6 | */ |
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| 7 | |
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| 8 | #include <rtems.h> |
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| 9 | #include <bsp.h> |
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| 10 | #include <pcibios.h> |
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| 11 | |
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[6266abe] | 12 | #include <string.h> /* memcpy */ |
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[6ce94bc3] | 13 | |
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[0ebbf66] | 14 | /* |
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| 15 | * This is simpliest possible PCI BIOS, it assumes that addressing |
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[6266abe] | 16 | * is flat and that stack is big enough |
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| 17 | */ |
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[d7034e1] | 18 | |
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[0ebbf66] | 19 | |
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| 20 | static int pcibInitialized = 0; |
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| 21 | static unsigned int pcibEntry; |
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| 22 | |
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| 23 | /* |
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[00882105] | 24 | * Array to pass data between c and __asm__ parts, at the time of |
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| 25 | * writing I am not yet that familiar with extended __asm__ feature |
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[6266abe] | 26 | * of gcc. This code is not on performance path, so we can care |
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| 27 | * relatively little about performance here |
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[0ebbf66] | 28 | */ |
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| 29 | static volatile unsigned int pcibExchg[5]; |
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| 30 | |
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| 31 | static int pcib_convert_err(int err); |
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| 32 | |
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| 33 | /* |
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[6266abe] | 34 | * Detects presense of PCI BIOS, returns |
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[0ebbf66] | 35 | * error code |
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| 36 | */ |
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[6266abe] | 37 | int |
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[bdc2572] | 38 | pci_initialize(void) |
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[0ebbf66] | 39 | { |
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| 40 | unsigned char *ucp; |
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| 41 | unsigned char sum; |
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| 42 | int i; |
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| 43 | |
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| 44 | pcibInitialized = 0; |
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| 45 | |
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| 46 | /* First, we have to look for BIOS-32 */ |
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[6266abe] | 47 | for (ucp = (unsigned char *)0xE0000; |
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| 48 | ucp < (unsigned char *)0xFFFFF; |
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| 49 | ucp += 0x10) { |
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| 50 | if (memcmp(ucp, "_32_", 4) != 0) { |
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| 51 | continue; |
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| 52 | } |
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[0ebbf66] | 53 | |
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| 54 | /* Got signature, check length */ |
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[6266abe] | 55 | if (*(ucp + 9) != 1) { |
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| 56 | continue; |
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[0ebbf66] | 57 | } |
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| 58 | |
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[6266abe] | 59 | /* Verify checksum */ |
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| 60 | sum = 0; |
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| 61 | for (i=0; i<16; i++) { |
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| 62 | sum += *(ucp+i); |
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| 63 | } |
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| 64 | |
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| 65 | if (sum == 0) { |
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| 66 | /* found */ |
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| 67 | break; |
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[0ebbf66] | 68 | } |
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[6266abe] | 69 | } |
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| 70 | |
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| 71 | if (ucp >= (unsigned char *)0xFFFFF) { |
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| 72 | /* BIOS-32 not found */ |
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| 73 | return PCIB_ERR_NOTPRESENT; |
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| 74 | } |
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[0ebbf66] | 75 | |
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| 76 | /* BIOS-32 found, let us find PCI BIOS */ |
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| 77 | ucp += 4; |
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| 78 | |
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| 79 | pcibExchg[0] = *(unsigned int *)ucp; |
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| 80 | |
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[00882105] | 81 | __asm__ (" pusha"); /* Push all registers */ |
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| 82 | __asm__ (" movl pcibExchg, %edi"); /* Move entry point to esi */ |
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| 83 | __asm__ (" movl $0x49435024, %eax"); /* Move signature to eax */ |
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| 84 | __asm__ (" xorl %ebx, %ebx"); /* Zero ebx */ |
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| 85 | __asm__ (" pushl %cs"); |
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| 86 | __asm__ (" call *%edi"); /* Call entry */ |
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| 87 | __asm__ (" movl %eax, pcibExchg"); |
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| 88 | __asm__ (" movl %ebx, pcibExchg+4"); |
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| 89 | __asm__ (" movl %ecx, pcibExchg+8"); |
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| 90 | __asm__ (" movl %edx, pcibExchg+12"); |
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| 91 | __asm__ (" popa"); |
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[0ebbf66] | 92 | |
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[6266abe] | 93 | if ((pcibExchg[0] & 0xff) != 0) { |
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| 94 | /* Not found */ |
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| 95 | return PCIB_ERR_NOTPRESENT; |
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| 96 | } |
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[0ebbf66] | 97 | |
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| 98 | /* Found PCI entry point */ |
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| 99 | pcibEntry = pcibExchg[1] + pcibExchg[3]; |
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| 100 | |
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| 101 | /* Let us check whether PCI bios is present */ |
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| 102 | pcibExchg[0] = pcibEntry; |
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[6266abe] | 103 | |
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[00882105] | 104 | __asm__ (" pusha"); |
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| 105 | __asm__ (" movl pcibExchg, %edi"); |
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| 106 | __asm__ (" movb $0xb1, %ah"); |
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| 107 | __asm__ (" movb $0x01, %al"); |
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| 108 | __asm__ (" pushl %cs"); |
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| 109 | __asm__ (" call *%edi"); |
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| 110 | __asm__ (" movl %eax, pcibExchg"); |
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| 111 | __asm__ (" movl %ebx, pcibExchg+4"); |
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| 112 | __asm__ (" movl %ecx, pcibExchg+8"); |
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| 113 | __asm__ (" movl %edx, pcibExchg+12"); |
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| 114 | __asm__ (" popa"); |
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[0ebbf66] | 115 | |
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[6266abe] | 116 | if ((pcibExchg[0] & 0xff00) != 0) { |
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| 117 | /* Not found */ |
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| 118 | return PCIB_ERR_NOTPRESENT; |
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| 119 | } |
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[0ebbf66] | 120 | |
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[6266abe] | 121 | if (pcibExchg[3] != 0x20494350) { |
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| 122 | /* Signature does not match */ |
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| 123 | return PCIB_ERR_NOTPRESENT; |
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| 124 | } |
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[0ebbf66] | 125 | |
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| 126 | /* Success */ |
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[6266abe] | 127 | |
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[0ebbf66] | 128 | pcibInitialized = 1; |
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| 129 | return PCIB_ERR_SUCCESS; |
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| 130 | } |
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| 131 | |
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[6266abe] | 132 | /* |
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| 133 | * Find specified device and return its signature: combination |
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[0ebbf66] | 134 | * of bus number, device number and function number |
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| 135 | */ |
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[32f2304a] | 136 | static int |
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[0ebbf66] | 137 | pcib_find_by_devid(int vendorId, int devId, int idx, int *sig) |
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| 138 | { |
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[6266abe] | 139 | if (!pcibInitialized) { |
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| 140 | return PCIB_ERR_UNINITIALIZED; |
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| 141 | } |
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[0ebbf66] | 142 | |
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| 143 | pcibExchg[0] = pcibEntry; |
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| 144 | pcibExchg[1] = vendorId; |
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| 145 | pcibExchg[2] = devId; |
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| 146 | pcibExchg[3] = idx; |
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| 147 | |
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[00882105] | 148 | __asm__ (" pusha"); |
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| 149 | __asm__ (" movl pcibExchg, %edi"); |
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| 150 | __asm__ (" movb $0xb1, %ah"); |
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| 151 | __asm__ (" movb $0x02, %al"); |
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| 152 | __asm__ (" movl pcibExchg+4, %edx"); |
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| 153 | __asm__ (" movl pcibExchg+8, %ecx"); |
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| 154 | __asm__ (" movl pcibExchg+12, %esi"); |
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| 155 | __asm__ (" pushl %cs"); |
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| 156 | __asm__ (" call *%edi"); |
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| 157 | __asm__ (" movl %eax, pcibExchg"); |
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| 158 | __asm__ (" movl %ebx, pcibExchg+4"); |
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| 159 | __asm__ (" popa"); |
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[0ebbf66] | 160 | |
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| 161 | *sig = pcibExchg[1] & 0xffff; |
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| 162 | |
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| 163 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 164 | } |
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| 165 | |
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[c2701a0] | 166 | int |
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| 167 | pci_find_device( |
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| 168 | unsigned short vendorid, |
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| 169 | unsigned short deviceid, |
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| 170 | int instance, |
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| 171 | int *pbus, |
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| 172 | int *pdev, |
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| 173 | int *pfun |
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| 174 | ) |
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| 175 | { |
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| 176 | int status; |
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[a6e2293] | 177 | int sig = 0; |
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[c2701a0] | 178 | |
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| 179 | status = pcib_find_by_devid( vendorid, deviceid, instance, &sig ); |
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| 180 | |
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| 181 | *pbus = PCIB_DEVSIG_BUS(sig); |
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| 182 | *pdev = PCIB_DEVSIG_DEV(sig); |
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| 183 | *pfun = PCIB_DEVSIG_FUNC(sig); |
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[b365d4d] | 184 | return status ? -1 : 0; |
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[c2701a0] | 185 | } |
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| 186 | |
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[6266abe] | 187 | /* |
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| 188 | * Find specified class code return device signature: combination |
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[0ebbf66] | 189 | * of bus number, device number and function number |
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| 190 | */ |
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| 191 | int |
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| 192 | pcib_find_by_class(int classCode, int idx, int *sig) |
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| 193 | { |
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[6266abe] | 194 | if (!pcibInitialized) { |
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| 195 | return PCIB_ERR_UNINITIALIZED; |
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| 196 | } |
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[0ebbf66] | 197 | |
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| 198 | pcibExchg[0] = pcibEntry; |
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| 199 | pcibExchg[1] = classCode; |
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| 200 | pcibExchg[2] = idx; |
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| 201 | |
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[00882105] | 202 | __asm__ (" pusha"); |
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| 203 | __asm__ (" movl pcibExchg, %edi"); |
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| 204 | __asm__ (" movb $0xb1, %ah"); |
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| 205 | __asm__ (" movb $0x03, %al"); |
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| 206 | __asm__ (" movl pcibExchg+4, %ecx"); |
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| 207 | __asm__ (" movl pcibExchg+8, %esi"); |
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| 208 | __asm__ (" pushl %cs"); |
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| 209 | __asm__ (" call *%edi"); |
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| 210 | __asm__ (" movl %eax, pcibExchg"); |
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| 211 | __asm__ (" movl %ebx, pcibExchg+4"); |
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| 212 | __asm__ (" popa"); |
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[0ebbf66] | 213 | |
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[6266abe] | 214 | if ((pcibExchg[0] & 0xff00) != 0) { |
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| 215 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 216 | } |
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[0ebbf66] | 217 | |
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| 218 | *sig = pcibExchg[1] & 0xffff; |
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| 219 | |
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| 220 | return PCIB_ERR_SUCCESS; |
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| 221 | } |
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[6266abe] | 222 | |
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[718c36d] | 223 | static uint8_t ucBusCount = 0xff; |
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[d7034e1] | 224 | |
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[bdc2572] | 225 | unsigned char |
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[f9abe50] | 226 | pci_bus_count(void) |
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[d7034e1] | 227 | { |
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[6266abe] | 228 | if ( ucBusCount == 0xff ) { |
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| 229 | unsigned char bus; |
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| 230 | unsigned char dev; |
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[2573e69] | 231 | unsigned char fun; |
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| 232 | unsigned char nfn; |
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[6266abe] | 233 | unsigned char hd = 0; |
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[8149a2de] | 234 | uint32_t d = 0; |
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[6266abe] | 235 | int sig; |
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| 236 | |
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| 237 | ucBusCount = 0; |
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| 238 | |
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| 239 | for (bus=0; bus< 0xff; bus++) { |
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| 240 | for (dev=0; dev<PCI_MAX_DEVICES; dev++) { |
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| 241 | sig = PCIB_DEVSIG_MAKE(bus,dev,0); |
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| 242 | pcib_conf_read32(sig, PCI_VENDOR_ID, &d); |
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| 243 | |
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[2573e69] | 244 | if ( -1 == d ) { |
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| 245 | continue; |
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| 246 | } |
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| 247 | |
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| 248 | pcib_conf_read8(sig, PCI_HEADER_TYPE, &hd); |
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| 249 | nfn = (hd & 0x80) ? PCI_MAX_FUNCTIONS : 1; |
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| 250 | |
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| 251 | for ( fun=0; fun<nfn; fun++ ) { |
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| 252 | |
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| 253 | sig = PCIB_DEVSIG_MAKE(bus,dev,fun); |
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| 254 | pcib_conf_read32(sig, PCI_VENDOR_ID, &d); |
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| 255 | if ( -1 == d ) |
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| 256 | continue; |
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| 257 | |
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| 258 | pcib_conf_read32(sig, PCI_CLASS_REVISION, &d); |
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| 259 | |
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| 260 | if ( (d >> 16) == PCI_CLASS_BRIDGE_PCI ) { |
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| 261 | pcib_conf_read8(sig, PCI_SUBORDINATE_BUS, &hd); |
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[6266abe] | 262 | |
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[2573e69] | 263 | if ( hd > ucBusCount ) |
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| 264 | ucBusCount = hd; |
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| 265 | } |
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[6266abe] | 266 | |
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| 267 | } |
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[d7034e1] | 268 | } |
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[6266abe] | 269 | } |
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[d7034e1] | 270 | |
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[6266abe] | 271 | if ( ucBusCount == 0 ) { |
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| 272 | printk("pci_bus_count() found 0 busses, assuming 1\n"); |
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| 273 | ucBusCount = 1; |
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| 274 | } else if ( ucBusCount == 0xff ) { |
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| 275 | printk("pci_bus_count() found 0xff busses, assuming 1\n"); |
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| 276 | ucBusCount = 1; |
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| 277 | } |
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| 278 | } |
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[d7034e1] | 279 | |
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[6266abe] | 280 | return ucBusCount; |
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[d7034e1] | 281 | } |
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| 282 | |
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[6266abe] | 283 | /* |
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[0ebbf66] | 284 | * Generate Special Cycle |
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| 285 | */ |
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| 286 | int |
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| 287 | pcib_special_cycle(int busNo, int data) |
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| 288 | { |
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[6266abe] | 289 | if (!pcibInitialized) { |
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| 290 | return PCIB_ERR_UNINITIALIZED; |
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| 291 | } |
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[0ebbf66] | 292 | |
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| 293 | pcibExchg[0] = pcibEntry; |
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| 294 | pcibExchg[1] = busNo << 8; |
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| 295 | pcibExchg[2] = data; |
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| 296 | |
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[00882105] | 297 | __asm__ (" pusha"); |
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| 298 | __asm__ (" movl pcibExchg, %edi"); |
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| 299 | __asm__ (" movb $0xb1, %ah"); |
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| 300 | __asm__ (" movb $0x06, %al"); |
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| 301 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 302 | __asm__ (" movl pcibExchg+8, %edx"); |
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| 303 | __asm__ (" pushl %cs"); |
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| 304 | __asm__ (" call *%edi"); |
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| 305 | __asm__ (" movl %eax, pcibExchg"); |
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| 306 | __asm__ (" movl %ebx, pcibExchg+4"); |
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| 307 | __asm__ (" popa"); |
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[0ebbf66] | 308 | |
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| 309 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 310 | } |
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| 311 | |
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[6266abe] | 312 | |
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| 313 | /* |
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[0ebbf66] | 314 | * Read byte from config space |
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| 315 | */ |
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| 316 | int |
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[8149a2de] | 317 | pcib_conf_read8(int sig, int off, uint8_t *data) |
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[0ebbf66] | 318 | { |
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[6266abe] | 319 | if (!pcibInitialized) { |
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| 320 | return PCIB_ERR_UNINITIALIZED; |
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| 321 | } |
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[0ebbf66] | 322 | |
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| 323 | pcibExchg[0] = pcibEntry; |
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| 324 | pcibExchg[1] = sig; |
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| 325 | pcibExchg[2] = off; |
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| 326 | |
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[00882105] | 327 | __asm__ (" pusha"); |
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| 328 | __asm__ (" movl pcibExchg, %esi"); |
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| 329 | __asm__ (" movb $0xb1, %ah"); |
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| 330 | __asm__ (" movb $0x08, %al"); |
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| 331 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 332 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 333 | __asm__ (" pushl %cs"); |
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| 334 | __asm__ (" call *%esi"); |
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| 335 | __asm__ (" movl %eax, pcibExchg"); |
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| 336 | __asm__ (" movl %ecx, pcibExchg+4"); |
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| 337 | __asm__ (" popa"); |
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[0ebbf66] | 338 | |
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[6266abe] | 339 | if ((pcibExchg[0] & 0xff00) != 0) { |
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| 340 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 341 | } |
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[0ebbf66] | 342 | |
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| 343 | *data = (unsigned char)pcibExchg[1] & 0xff; |
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| 344 | |
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| 345 | return PCIB_ERR_SUCCESS; |
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| 346 | } |
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| 347 | |
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[6266abe] | 348 | |
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| 349 | /* |
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[0ebbf66] | 350 | * Read word from config space |
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| 351 | */ |
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| 352 | int |
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[8149a2de] | 353 | pcib_conf_read16(int sig, int off, uint16_t *data) |
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[0ebbf66] | 354 | { |
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[6266abe] | 355 | if (!pcibInitialized) { |
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| 356 | return PCIB_ERR_UNINITIALIZED; |
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| 357 | } |
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[0ebbf66] | 358 | |
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| 359 | pcibExchg[0] = pcibEntry; |
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| 360 | pcibExchg[1] = sig; |
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| 361 | pcibExchg[2] = off; |
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| 362 | |
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[00882105] | 363 | __asm__ (" pusha"); |
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| 364 | __asm__ (" movl pcibExchg, %esi"); |
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| 365 | __asm__ (" movb $0xb1, %ah"); |
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| 366 | __asm__ (" movb $0x09, %al"); |
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| 367 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 368 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 369 | __asm__ (" pushl %cs"); |
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| 370 | __asm__ (" call *%esi"); |
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| 371 | __asm__ (" movl %eax, pcibExchg"); |
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| 372 | __asm__ (" movl %ecx, pcibExchg+4"); |
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| 373 | __asm__ (" popa"); |
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[0ebbf66] | 374 | |
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[6266abe] | 375 | if ((pcibExchg[0] & 0xff00) != 0) { |
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| 376 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 377 | } |
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[0ebbf66] | 378 | |
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| 379 | *data = (unsigned short)pcibExchg[1] & 0xffff; |
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| 380 | |
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| 381 | return PCIB_ERR_SUCCESS; |
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| 382 | } |
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| 383 | |
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[6266abe] | 384 | |
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| 385 | /* |
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[0ebbf66] | 386 | * Read dword from config space |
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| 387 | */ |
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| 388 | int |
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[8149a2de] | 389 | pcib_conf_read32(int sig, int off, uint32_t *data) |
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[0ebbf66] | 390 | { |
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[6266abe] | 391 | if (!pcibInitialized) { |
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| 392 | return PCIB_ERR_UNINITIALIZED; |
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| 393 | } |
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[0ebbf66] | 394 | |
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| 395 | pcibExchg[0] = pcibEntry; |
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| 396 | pcibExchg[1] = sig; |
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| 397 | pcibExchg[2] = off; |
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| 398 | |
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[00882105] | 399 | __asm__ (" pusha"); |
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| 400 | __asm__ (" movl pcibExchg, %esi"); |
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| 401 | __asm__ (" movb $0xb1, %ah"); |
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| 402 | __asm__ (" movb $0x0a, %al"); |
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| 403 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 404 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 405 | __asm__ (" pushl %cs"); |
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| 406 | __asm__ (" call *%esi"); |
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| 407 | __asm__ (" movl %eax, pcibExchg"); |
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| 408 | __asm__ (" movl %ecx, pcibExchg+4"); |
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| 409 | __asm__ (" popa"); |
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[0ebbf66] | 410 | |
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[6266abe] | 411 | if ((pcibExchg[0] & 0xff00) != 0) { |
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| 412 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 413 | } |
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[0ebbf66] | 414 | |
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| 415 | *data = (unsigned int)pcibExchg[1]; |
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| 416 | |
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| 417 | return PCIB_ERR_SUCCESS; |
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| 418 | } |
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| 419 | |
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[6266abe] | 420 | |
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| 421 | /* |
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[0ebbf66] | 422 | * Write byte into config space |
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| 423 | */ |
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| 424 | int |
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[8149a2de] | 425 | pcib_conf_write8(int sig, int off, uint8_t data) |
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[0ebbf66] | 426 | { |
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[6266abe] | 427 | if (!pcibInitialized) { |
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| 428 | return PCIB_ERR_UNINITIALIZED; |
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| 429 | } |
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[0ebbf66] | 430 | |
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| 431 | pcibExchg[0] = pcibEntry; |
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| 432 | pcibExchg[1] = sig; |
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| 433 | pcibExchg[2] = off; |
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| 434 | pcibExchg[3] = data & 0xff; |
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| 435 | |
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[00882105] | 436 | __asm__ (" pusha"); |
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| 437 | __asm__ (" movl pcibExchg, %esi"); |
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| 438 | __asm__ (" movb $0xb1, %ah"); |
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| 439 | __asm__ (" movb $0x0b, %al"); |
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| 440 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 441 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 442 | __asm__ (" movl pcibExchg+12, %ecx"); |
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| 443 | __asm__ (" pushl %cs"); |
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| 444 | __asm__ (" call *%esi"); |
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| 445 | __asm__ (" movl %eax, pcibExchg"); |
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| 446 | __asm__ (" popa"); |
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[0ebbf66] | 447 | |
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| 448 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 449 | } |
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| 450 | |
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[6266abe] | 451 | /* |
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[0ebbf66] | 452 | * Write word into config space |
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| 453 | */ |
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| 454 | int |
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[8149a2de] | 455 | pcib_conf_write16(int sig, int off, uint16_t data) |
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[0ebbf66] | 456 | { |
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[6266abe] | 457 | if (!pcibInitialized) { |
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| 458 | return PCIB_ERR_UNINITIALIZED; |
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| 459 | } |
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[0ebbf66] | 460 | |
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| 461 | pcibExchg[0] = pcibEntry; |
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| 462 | pcibExchg[1] = sig; |
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| 463 | pcibExchg[2] = off; |
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| 464 | pcibExchg[3] = data & 0xffff; |
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| 465 | |
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[00882105] | 466 | __asm__ (" pusha"); |
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| 467 | __asm__ (" movl pcibExchg, %esi"); |
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| 468 | __asm__ (" movb $0xb1, %ah"); |
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| 469 | __asm__ (" movb $0x0c, %al"); |
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| 470 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 471 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 472 | __asm__ (" movl pcibExchg+12, %ecx"); |
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| 473 | __asm__ (" pushl %cs"); |
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| 474 | __asm__ (" call *%esi"); |
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| 475 | __asm__ (" movl %eax, pcibExchg"); |
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| 476 | __asm__ (" popa"); |
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[0ebbf66] | 477 | |
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| 478 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 479 | } |
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| 480 | |
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[d7034e1] | 481 | |
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[6266abe] | 482 | |
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| 483 | /* |
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[0ebbf66] | 484 | * Write dword into config space |
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| 485 | */ |
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| 486 | int |
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[8149a2de] | 487 | pcib_conf_write32(int sig, int off, uint32_t data) |
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[0ebbf66] | 488 | { |
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[6266abe] | 489 | if (!pcibInitialized){ |
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[0ebbf66] | 490 | return PCIB_ERR_UNINITIALIZED; |
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[6266abe] | 491 | } |
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[0ebbf66] | 492 | |
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| 493 | pcibExchg[0] = pcibEntry; |
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| 494 | pcibExchg[1] = sig; |
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| 495 | pcibExchg[2] = off; |
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| 496 | pcibExchg[3] = data; |
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| 497 | |
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[00882105] | 498 | __asm__ (" pusha"); |
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| 499 | __asm__ (" movl pcibExchg, %esi"); |
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| 500 | __asm__ (" movb $0xb1, %ah"); |
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| 501 | __asm__ (" movb $0x0d, %al"); |
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| 502 | __asm__ (" movl pcibExchg+4, %ebx"); |
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| 503 | __asm__ (" movl pcibExchg+8, %edi"); |
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| 504 | __asm__ (" movl pcibExchg+12, %ecx"); |
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| 505 | __asm__ (" pushl %cs"); |
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| 506 | __asm__ (" call *%esi"); |
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| 507 | __asm__ (" movl %eax, pcibExchg"); |
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| 508 | __asm__ (" popa"); |
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[0ebbf66] | 509 | |
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| 510 | return pcib_convert_err((pcibExchg[0] >> 8) & 0xff); |
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| 511 | } |
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[6266abe] | 512 | |
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[6128a4a] | 513 | |
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[0ebbf66] | 514 | static int |
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| 515 | pcib_convert_err(int err) |
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| 516 | { |
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[6266abe] | 517 | switch(err & 0xff){ |
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[0ebbf66] | 518 | case 0: |
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| 519 | return PCIB_ERR_SUCCESS; |
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| 520 | case 0x81: |
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| 521 | return PCIB_ERR_NOFUNC; |
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| 522 | case 0x83: |
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| 523 | return PCIB_ERR_BADVENDOR; |
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| 524 | case 0x86: |
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| 525 | return PCIB_ERR_DEVNOTFOUND; |
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| 526 | case 0x87: |
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| 527 | return PCIB_ERR_BADREG; |
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| 528 | default: |
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| 529 | break; |
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[6266abe] | 530 | } |
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[0ebbf66] | 531 | return PCIB_ERR_NOFUNC; |
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| 532 | } |
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[d7034e1] | 533 | |
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[6266abe] | 534 | static int |
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[60b728b5] | 535 | BSP_pci_read_config_byte( |
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[6266abe] | 536 | unsigned char bus, |
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| 537 | unsigned char slot, |
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| 538 | unsigned char fun, |
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| 539 | unsigned char offset, |
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| 540 | unsigned char *val |
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[3495c57] | 541 | ) |
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[6266abe] | 542 | { |
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| 543 | int sig; |
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[d7034e1] | 544 | |
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[6266abe] | 545 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
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| 546 | pcib_conf_read8(sig, offset, val); |
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| 547 | return PCIBIOS_SUCCESSFUL; |
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| 548 | } |
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[d7034e1] | 549 | |
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[6266abe] | 550 | static int |
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[60b728b5] | 551 | BSP_pci_read_config_word( |
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[6266abe] | 552 | unsigned char bus, |
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| 553 | unsigned char slot, |
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| 554 | unsigned char fun, |
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| 555 | unsigned char offset, |
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| 556 | unsigned short *val |
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[3495c57] | 557 | ) |
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[6266abe] | 558 | { |
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| 559 | int sig; |
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[d7034e1] | 560 | |
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[6266abe] | 561 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
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| 562 | pcib_conf_read16(sig, offset, val); |
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| 563 | return PCIBIOS_SUCCESSFUL; |
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| 564 | } |
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| 565 | |
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| 566 | static int |
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[60b728b5] | 567 | BSP_pci_read_config_dword( |
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[6266abe] | 568 | unsigned char bus, |
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| 569 | unsigned char slot, |
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| 570 | unsigned char fun, |
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| 571 | unsigned char offset, |
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[8149a2de] | 572 | uint32_t *val |
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[3495c57] | 573 | ) |
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[6266abe] | 574 | { |
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| 575 | int sig; |
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| 576 | |
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| 577 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
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| 578 | pcib_conf_read32(sig, offset, val); |
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| 579 | return PCIBIOS_SUCCESSFUL; |
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| 580 | } |
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| 581 | |
---|
| 582 | static int |
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[60b728b5] | 583 | BSP_pci_write_config_byte( |
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[6266abe] | 584 | unsigned char bus, |
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| 585 | unsigned char slot, |
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| 586 | unsigned char fun, |
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| 587 | unsigned char offset, |
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| 588 | unsigned char val |
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[3495c57] | 589 | ) |
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[6266abe] | 590 | { |
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| 591 | int sig; |
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| 592 | |
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| 593 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
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| 594 | pcib_conf_write8(sig, offset, val); |
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| 595 | return PCIBIOS_SUCCESSFUL; |
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| 596 | } |
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| 597 | |
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| 598 | static int |
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[60b728b5] | 599 | BSP_pci_write_config_word( |
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[6266abe] | 600 | unsigned char bus, |
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| 601 | unsigned char slot, |
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| 602 | unsigned char fun, |
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| 603 | unsigned char offset, |
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| 604 | unsigned short val |
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[3495c57] | 605 | ) |
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[6266abe] | 606 | { |
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| 607 | int sig; |
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| 608 | |
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| 609 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
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| 610 | pcib_conf_write16(sig, offset, val); |
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| 611 | return PCIBIOS_SUCCESSFUL; |
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| 612 | } |
---|
| 613 | |
---|
| 614 | static int |
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[60b728b5] | 615 | BSP_pci_write_config_dword( |
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[6266abe] | 616 | unsigned char bus, |
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| 617 | unsigned char slot, |
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| 618 | unsigned char fun, |
---|
| 619 | unsigned char offset, |
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[8149a2de] | 620 | uint32_t val |
---|
[3495c57] | 621 | ) |
---|
[6266abe] | 622 | { |
---|
| 623 | int sig; |
---|
| 624 | |
---|
| 625 | sig = PCIB_DEVSIG_MAKE(bus,slot,fun); |
---|
| 626 | pcib_conf_write32(sig, offset, val); |
---|
| 627 | return PCIBIOS_SUCCESSFUL; |
---|
| 628 | } |
---|
[d7034e1] | 629 | |
---|
[6266abe] | 630 | const pci_config_access_functions pci_indirect_functions = { |
---|
[60b728b5] | 631 | BSP_pci_read_config_byte, |
---|
| 632 | BSP_pci_read_config_word, |
---|
| 633 | BSP_pci_read_config_dword, |
---|
| 634 | BSP_pci_write_config_byte, |
---|
| 635 | BSP_pci_write_config_word, |
---|
| 636 | BSP_pci_write_config_dword |
---|
[6266abe] | 637 | }; |
---|
| 638 | |
---|
[32c347d] | 639 | rtems_pci_config_t BSP_pci_configuration = { |
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[6266abe] | 640 | (volatile unsigned char*)0, |
---|
| 641 | (volatile unsigned char*)0, |
---|
| 642 | &pci_indirect_functions |
---|
| 643 | }; |
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