Rev 1633 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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1628 | serge | 1 | |
2 | #include |
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3 | #include |
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4 | #include |
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5 | #include |
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6 | |||
7 | |||
8 | #include "acpi_bus.h" |
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9 | |||
10 | |||
11 | |||
12 | |||
13 | |||
14 | |||
15 | struct list_head node; |
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16 | ACPI_HANDLE handle; |
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17 | }; |
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18 | |||
19 | |||
20 | {"PNP0A03", 0}, |
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21 | {"", 0}, |
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22 | }; |
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23 | |||
24 | |||
1633 | serge | 25 | |
1628 | serge | 26 | |
27 | |||
28 | * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge |
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29 | * @handle - the ACPI CA node in question. |
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30 | * |
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31 | * Note: we could make this API take a struct acpi_device * instead, but |
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32 | * for now, it's more convenient to operate on an acpi_handle. |
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33 | */ |
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34 | int acpi_is_root_bridge(ACPI_HANDLE handle) |
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35 | { |
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36 | int ret; |
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37 | struct acpi_device *device; |
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38 | |||
39 | |||
40 | if (ret) |
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41 | return 0; |
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42 | |||
43 | |||
44 | if (ret) |
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45 | return 0; |
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46 | else |
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47 | return 1; |
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48 | } |
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49 | |||
50 | |||
51 | |||
52 | { |
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53 | struct acpi_pci_root *root; |
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54 | |||
55 | |||
56 | if (root->device->handle == handle) |
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57 | return root; |
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58 | } |
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59 | return NULL; |
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60 | } |
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61 | |||
62 | |||
63 | |||
64 | * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev |
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65 | * @handle: the handle in question |
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66 | * |
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67 | * Given an ACPI CA handle, the desired PCI device is located in the |
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68 | * list of PCI devices. |
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69 | * |
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70 | * If the device is found, its reference count is increased and this |
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71 | * function returns a pointer to its data structure. The caller must |
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72 | * decrement the reference count by calling pci_dev_put(). |
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73 | * If no device is found, %NULL is returned. |
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74 | */ |
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75 | struct pci_dev *acpi_get_pci_dev(ACPI_HANDLE handle) |
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76 | { |
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77 | int dev, fn; |
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78 | unsigned long long adr; |
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79 | ACPI_STATUS status; |
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80 | ACPI_HANDLE phandle; |
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81 | struct pci_bus *pbus; |
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82 | struct pci_dev *pdev = NULL; |
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83 | struct acpi_handle_node *node, *tmp; |
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84 | struct acpi_pci_root *root; |
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85 | LIST_HEAD(device_list); |
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86 | |||
87 | |||
88 | * Walk up the ACPI CA namespace until we reach a PCI root bridge. |
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89 | */ |
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90 | phandle = handle; |
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91 | while (!acpi_is_root_bridge(phandle)) { |
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92 | node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL); |
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93 | if (!node) |
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94 | goto out; |
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95 | |||
96 | |||
97 | node->handle = phandle; |
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98 | list_add(&node->node, &device_list); |
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99 | |||
100 | |||
101 | if (ACPI_FAILURE(status)) |
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102 | goto out; |
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103 | } |
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104 | |||
105 | |||
106 | if (!root) |
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107 | goto out; |
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108 | |||
109 | |||
110 | |||
111 | |||
112 | * Now, walk back down the PCI device tree until we return to our |
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113 | * original handle. Assumes that everything between the PCI root |
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114 | * bridge and the device we're looking for must be a P2P bridge. |
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115 | */ |
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116 | list_for_each_entry(node, &device_list, node) { |
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117 | ACPI_HANDLE hnd = node->handle; |
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118 | status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr); |
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119 | if (ACPI_FAILURE(status)) |
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120 | goto out; |
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121 | dev = (adr >> 16) & 0xffff; |
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122 | fn = adr & 0xffff; |
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123 | |||
124 | |||
125 | if (!pdev || hnd == handle) |
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126 | break; |
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127 | |||
128 | |||
129 | // pci_dev_put(pdev); |
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130 | |||
131 | |||
132 | * This function may be called for a non-PCI device that has a |
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133 | * PCI parent (eg. a disk under a PCI SATA controller). In that |
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134 | * case pdev->subordinate will be NULL for the parent. |
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135 | */ |
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136 | if (!pbus) { |
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137 | dbgprintf("Not a PCI-to-PCI bridge\n"); |
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138 | pdev = NULL; |
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139 | break; |
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140 | } |
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141 | } |
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142 | out: |
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143 | list_for_each_entry_safe(node, tmp, &device_list, node) |
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144 | kfree(node); |
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145 | |||
146 | |||
147 | } |
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148 | |||
149 | |||
1633 | serge | 150 | |
151 | { |
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152 | struct pci_dev *dev; |
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153 | |||
154 | |||
155 | { |
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156 | if(dev->pin) |
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1867 | serge | 157 | { |
158 | dbgprintf("PCI_%x_%x bus:%d devfn: %x pin %d bios irq: %d acpi irq: %d\n", |
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159 | dev->vendor, dev->device, dev->busnr, dev->devfn, |
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160 | dev->pin, dev->irq, acpi_get_irq(dev)); |
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161 | }; |
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162 | }; |
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1633 | serge | 163 | } |
164 | |||
165 | |||
166 | { |
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167 | struct acpi_pci_root *root; |
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168 | |||
169 | |||
170 | { |
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171 | struct pci_bus *pbus, *tbus; |
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172 | struct pci_dev *dev; |
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173 | |||
174 | |||
175 | |||
176 | |||
177 | { |
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178 | if(dev->pin) |
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1867 | serge | 179 | dbgprintf("PCI_%x_%x bus:%d devfn: %x pin %d bios irq: %d acpi irq: %d\n", |
180 | dev->vendor, dev->device, dev->busnr, dev->devfn, |
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181 | dev->pin, dev->irq, acpi_get_irq(dev)); |
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182 | }; |
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1633 | serge | 183 | |
184 | |||
185 | { |
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186 | print_bus_irqs(tbus); |
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187 | }; |
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188 | } |
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189 | }; |
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190 |