1 | /* GR-701 PCI Target driver. |
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2 | * |
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3 | * COPYRIGHT (c) 2008. |
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4 | * Cobham Gaisler AB. |
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5 | * |
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6 | * Configures the GR-701 interface PCI board. |
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7 | * This driver provides a AMBA PnP bus by using the general part |
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8 | * of the AMBA PnP bus driver (ambapp_bus.c). |
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9 | * |
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10 | * Driver resources for the AMBA PnP bus provided can be set using |
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11 | * gr701_set_resources(). |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.com/license/LICENSE. |
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16 | */ |
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17 | |
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18 | #include <stdio.h> |
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19 | #include <stdlib.h> |
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20 | #include <string.h> |
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21 | #include <sys/types.h> |
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22 | #include <sys/stat.h> |
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23 | |
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24 | #include <bsp.h> |
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25 | #include <rtems/bspIo.h> |
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26 | #include <pci.h> |
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27 | #include <pci/access.h> |
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28 | |
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29 | #include <ambapp.h> |
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30 | |
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31 | #include <ambapp.h> |
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32 | #include <drvmgr/drvmgr.h> |
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33 | #include <drvmgr/ambapp_bus.h> |
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34 | #include <drvmgr/pci_bus.h> |
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35 | #include <drvmgr/bspcommon.h> |
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36 | #include <bsp/genirq.h> |
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37 | |
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38 | #include <bsp/gr_701.h> |
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39 | |
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40 | /* Offset from 0x80000000 (dual bus version) */ |
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41 | #define AHB1_BASE_ADDR 0x80000000 |
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42 | #define AHB1_IOAREA_BASE_ADDR 0x80100000 |
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43 | |
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44 | /* #define DEBUG 1 */ |
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45 | |
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46 | #ifdef DEBUG |
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47 | #define DBG(x...) printk(x) |
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48 | #else |
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49 | #define DBG(x...) |
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50 | #endif |
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51 | |
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52 | int gr701_init1(struct drvmgr_dev *dev); |
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53 | int gr701_init2(struct drvmgr_dev *dev); |
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54 | void gr701_interrupt(void *arg); |
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55 | |
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56 | #define READ_REG(address) (*(volatile unsigned int *)address) |
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57 | |
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58 | /* PCI bride reg layout on AMBA side */ |
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59 | struct amba_bridge_regs { |
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60 | volatile unsigned int bar0; |
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61 | volatile unsigned int bar1; |
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62 | volatile unsigned int bar2; |
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63 | volatile unsigned int bar3; |
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64 | volatile unsigned int bar4;/* 0x10 */ |
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65 | |
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66 | volatile unsigned int unused[4*3-1]; |
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67 | |
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68 | volatile unsigned int ambabars[1]; /* 0x40 */ |
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69 | }; |
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70 | |
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71 | /* PCI bride reg layout on PCI side */ |
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72 | struct pci_bridge_regs { |
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73 | volatile unsigned int bar0; |
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74 | volatile unsigned int bar1; |
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75 | volatile unsigned int bar2; |
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76 | volatile unsigned int bar3; |
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77 | volatile unsigned int bar4; /* 0x10 */ |
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78 | |
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79 | volatile unsigned int ilevel; |
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80 | volatile unsigned int ipend; |
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81 | volatile unsigned int iforce; |
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82 | volatile unsigned int istatus; |
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83 | volatile unsigned int iclear; |
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84 | volatile unsigned int imask; |
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85 | }; |
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86 | |
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87 | /* Private data structure for driver */ |
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88 | struct gr701_priv { |
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89 | /* Driver management */ |
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90 | struct drvmgr_dev *dev; |
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91 | char prefix[16]; |
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92 | |
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93 | struct pci_bridge_regs *pcib; |
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94 | struct amba_bridge_regs *ambab; |
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95 | |
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96 | /* PCI */ |
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97 | pci_dev_t pcidev; |
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98 | struct pci_dev_info *devinfo; |
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99 | |
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100 | /* IRQ */ |
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101 | genirq_t genirq; |
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102 | int interrupt_cnt; |
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103 | |
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104 | /* GR-701 Address translation */ |
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105 | struct drvmgr_map_entry bus_maps_up[2]; |
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106 | struct drvmgr_map_entry bus_maps_down[2]; |
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107 | |
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108 | /* AMBA Plug&Play information on GR-701 */ |
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109 | struct ambapp_bus abus; |
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110 | struct ambapp_mmap amba_maps[3]; |
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111 | struct ambapp_config config; |
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112 | }; |
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113 | |
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114 | int ambapp_gr701_int_register( |
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115 | struct drvmgr_dev *dev, |
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116 | int irq, |
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117 | const char *info, |
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118 | drvmgr_isr handler, |
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119 | void *arg); |
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120 | int ambapp_gr701_int_unregister( |
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121 | struct drvmgr_dev *dev, |
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122 | int irq, |
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123 | drvmgr_isr isr, |
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124 | void *arg); |
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125 | int ambapp_gr701_int_unmask( |
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126 | struct drvmgr_dev *dev, |
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127 | int irq); |
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128 | int ambapp_gr701_int_mask( |
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129 | struct drvmgr_dev *dev, |
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130 | int irq); |
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131 | int ambapp_gr701_int_clear( |
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132 | struct drvmgr_dev *dev, |
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133 | int irq); |
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134 | int ambapp_gr701_get_params( |
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135 | struct drvmgr_dev *dev, |
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136 | struct drvmgr_bus_params *params); |
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137 | |
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138 | struct ambapp_ops ambapp_gr701_ops = { |
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139 | .int_register = ambapp_gr701_int_register, |
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140 | .int_unregister = ambapp_gr701_int_unregister, |
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141 | .int_unmask = ambapp_gr701_int_unmask, |
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142 | .int_mask = ambapp_gr701_int_mask, |
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143 | .int_clear = ambapp_gr701_int_clear, |
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144 | .get_params = ambapp_gr701_get_params |
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145 | }; |
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146 | |
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147 | struct drvmgr_drv_ops gr701_ops = |
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148 | { |
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149 | .init = {gr701_init1, gr701_init2, NULL, NULL}, |
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150 | .remove = NULL, |
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151 | .info = NULL |
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152 | }; |
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153 | |
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154 | struct pci_dev_id_match gr701_ids[] = |
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155 | { |
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156 | PCIID_DEVVEND(PCIID_VENDOR_GAISLER, PCIID_DEVICE_GR_701), |
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157 | PCIID_END_TABLE /* Mark end of table */ |
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158 | }; |
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159 | |
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160 | struct pci_drv_info gr701_info = |
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161 | { |
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162 | { |
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163 | DRVMGR_OBJ_DRV, /* Driver */ |
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164 | NULL, /* Next driver */ |
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165 | NULL, /* Device list */ |
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166 | DRIVER_PCI_GAISLER_GR701_ID, /* Driver ID */ |
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167 | "GR-701_DRV", /* Driver Name */ |
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168 | DRVMGR_BUS_TYPE_PCI, /* Bus Type */ |
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169 | &gr701_ops, |
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170 | NULL, /* Funcs */ |
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171 | 0, /* No devices yet */ |
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172 | 0, |
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173 | }, |
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174 | &gr701_ids[0] |
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175 | }; |
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176 | |
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177 | /* Driver resources configuration for the AMBA bus on the GR-701 board. |
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178 | * It is declared weak so that the user may override it from the project file, |
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179 | * if the default settings are not enough. |
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180 | * |
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181 | * The configuration consists of an array of configuration pointers, each |
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182 | * pointer determine the configuration of one GR-701 board. Pointer |
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183 | * zero is for board0, pointer 1 for board1 and so on. |
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184 | * |
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185 | * The array must end with a NULL pointer. |
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186 | */ |
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187 | struct drvmgr_bus_res *gr701_resources[] __attribute__((weak)) = |
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188 | { |
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189 | NULL |
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190 | }; |
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191 | |
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192 | void gr701_register_drv(void) |
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193 | { |
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194 | DBG("Registering GR-701 PCI driver\n"); |
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195 | drvmgr_drv_register(&gr701_info.general); |
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196 | } |
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197 | |
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198 | void gr701_interrupt(void *arg) |
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199 | { |
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200 | struct gr701_priv *priv = arg; |
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201 | unsigned int status; |
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202 | int irq = 0; |
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203 | |
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204 | while ( (status=priv->pcib->istatus) != 0 ) { |
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205 | priv->interrupt_cnt++; /* An interrupt was generated */ |
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206 | irq = status; |
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207 | genirq_doirq(priv->genirq, irq); |
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208 | /* ACK interrupt */ |
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209 | priv->pcib->istatus = 0; |
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210 | } |
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211 | |
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212 | /* ACK interrupt, this is because PCI is Level, so the IRQ Controller still drives the IRQ. */ |
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213 | if ( irq ) |
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214 | drvmgr_interrupt_clear(priv->dev, 0); |
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215 | } |
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216 | |
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217 | static int gr701_hw_init(struct gr701_priv *priv) |
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218 | { |
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219 | uint32_t com1; |
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220 | struct pci_bridge_regs *pcib; |
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221 | struct amba_bridge_regs *ambab; |
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222 | int mst; |
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223 | unsigned int pci_freq_hz; |
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224 | pci_dev_t pcidev = priv->pcidev; |
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225 | struct pci_dev_info *devinfo = priv->devinfo; |
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226 | |
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227 | /* Set up PCI ==> AMBA */ |
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228 | priv->pcib = pcib = (void *)devinfo->resources[0].address; |
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229 | pcib->bar0 = 0xfc000000; |
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230 | |
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231 | /* Set up GR701 AMBA Masters connection to PCI */ |
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232 | priv->ambab = ambab = (struct amba_bridge_regs *)( |
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233 | devinfo->resources[1].address + 0x400); |
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234 | |
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235 | /* Init all msters, max 16 */ |
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236 | for (mst=0; mst<16; mst++) { |
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237 | ambab->ambabars[mst] = 0x40000000; |
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238 | if (READ_REG(&ambab->ambabars[mst]) != 0x40000000) |
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239 | break; |
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240 | } |
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241 | |
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242 | /* Setup Address translation for AMBA bus, assume that PCI BAR |
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243 | * are mapped 1:1 to CPU. |
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244 | */ |
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245 | |
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246 | priv->amba_maps[0].size = 0x04000000; |
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247 | priv->amba_maps[0].local_adr = devinfo->resources[1].address; |
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248 | priv->amba_maps[0].remote_adr = 0xfc000000; |
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249 | |
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250 | /* Mark end of table */ |
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251 | priv->amba_maps[1].size=0; |
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252 | priv->amba_maps[1].local_adr = 0; |
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253 | priv->amba_maps[1].remote_adr = 0; |
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254 | |
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255 | /* Setup DOWN-streams address translation */ |
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256 | priv->bus_maps_down[0].name = "PCI BAR1 -> AMBA"; |
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257 | priv->bus_maps_down[0].size = priv->amba_maps[0].size; |
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258 | priv->bus_maps_down[0].from_adr = (void *)devinfo->resources[1].address; |
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259 | priv->bus_maps_down[0].to_adr = (void *)0xfc000000; |
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260 | |
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261 | /* Setup UP-streams address translation */ |
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262 | priv->bus_maps_up[0].name = "AMBA PCIF Window"; |
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263 | priv->bus_maps_up[0].size = 0x10000000; |
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264 | priv->bus_maps_up[0].from_adr = (void *)0xe0000000; |
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265 | priv->bus_maps_up[0].to_adr = (void *)0x40000000; |
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266 | |
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267 | /* Mark end of translation tables */ |
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268 | priv->bus_maps_down[1].size = 0; |
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269 | priv->bus_maps_up[1].size = 0; |
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270 | |
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271 | /* Enable I/O and Mem accesses */ |
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272 | pci_cfg_r32(pcidev, PCIR_COMMAND, &com1); |
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273 | com1 |= PCIM_CMD_PORTEN | PCIM_CMD_MEMEN; |
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274 | pci_cfg_w32(pcidev, PCIR_COMMAND, com1); |
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275 | |
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276 | /* Start AMBA PnP scan at first AHB bus */ |
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277 | ambapp_scan(&priv->abus, devinfo->resources[1].address + 0x3f00000, |
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278 | NULL, &priv->amba_maps[0]); |
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279 | |
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280 | /* Frequency is the same as the PCI bus frequency */ |
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281 | drvmgr_freq_get(priv->dev, 0, &pci_freq_hz); |
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282 | |
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283 | /* Initialize Frequency of AMBA bus */ |
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284 | ambapp_freq_init(&priv->abus, NULL, pci_freq_hz); |
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285 | |
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286 | /* Init IRQ controller (avoid IRQ generation) */ |
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287 | pcib->imask = 0x0000; |
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288 | pcib->ipend = 0; |
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289 | pcib->iclear = 0xffff; |
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290 | pcib->iforce = 0; |
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291 | pcib->ilevel = 0x0; |
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292 | |
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293 | /* Successfully registered the GR-701 board */ |
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294 | return 0; |
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295 | } |
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296 | |
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297 | static void gr701_hw_init2(struct gr701_priv *priv) |
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298 | { |
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299 | /* Enable PCI Master (for DMA) */ |
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300 | pci_master_enable(priv->pcidev); |
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301 | } |
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302 | |
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303 | /* Called when a PCI target is found with the PCI device and vendor ID |
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304 | * given in gr701_ids[]. |
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305 | */ |
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306 | int gr701_init1(struct drvmgr_dev *dev) |
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307 | { |
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308 | struct gr701_priv *priv; |
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309 | struct pci_dev_info *devinfo; |
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310 | uint32_t bar0, bar1, bar0_size, bar1_size; |
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311 | int resources_cnt; |
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312 | |
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313 | priv = malloc(sizeof(struct gr701_priv)); |
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314 | if ( !priv ) |
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315 | return DRVMGR_NOMEM; |
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316 | |
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317 | memset(priv, 0, sizeof(*priv)); |
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318 | dev->priv = priv; |
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319 | priv->dev = dev; |
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320 | |
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321 | /* Determine number of configurations */ |
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322 | resources_cnt = get_resarray_count(gr701_resources); |
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323 | |
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324 | /* Generate Device prefix */ |
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325 | strcpy(priv->prefix, "/dev/gr701_0"); |
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326 | priv->prefix[11] += dev->minor_drv; |
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327 | mkdir(priv->prefix, S_IRWXU | S_IRWXG | S_IRWXO); |
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328 | priv->prefix[12] = '/'; |
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329 | priv->prefix[13] = '\0'; |
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330 | |
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331 | priv->devinfo = devinfo = (struct pci_dev_info *)dev->businfo; |
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332 | priv->pcidev = devinfo->pcidev; |
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333 | bar0 = devinfo->resources[0].address; |
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334 | bar0_size = devinfo->resources[0].size; |
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335 | bar1 = devinfo->resources[1].address; |
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336 | bar1_size = devinfo->resources[1].size; |
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337 | printf("\n\n--- GR-701[%d] ---\n", dev->minor_drv); |
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338 | printf(" PCI BUS: 0x%x, SLOT: 0x%x, FUNCTION: 0x%x\n", |
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339 | PCI_DEV_EXPAND(priv->pcidev)); |
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340 | printf(" PCI VENDOR: 0x%04x, DEVICE: 0x%04x\n\n\n", |
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341 | devinfo->id.vendor, devinfo->id.device); |
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342 | printf(" PCI BAR[0]: 0x%lx - 0x%lx\n", bar0, bar0 + bar0_size - 1); |
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343 | printf(" PCI BAR[1]: 0x%lx - 0x%lx\n", bar1, bar1 + bar1_size - 1); |
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344 | printf(" IRQ: %d\n\n\n", devinfo->irq); |
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345 | |
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346 | /* all neccessary space assigned to GR-701 target? */ |
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347 | if ((bar0_size == 0) || (bar1_size == 0)) |
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348 | return DRVMGR_ENORES; |
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349 | |
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350 | priv->genirq = genirq_init(16); |
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351 | if ( priv->genirq == NULL ) { |
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352 | free(priv); |
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353 | dev->priv = NULL; |
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354 | return DRVMGR_FAIL; |
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355 | } |
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356 | |
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357 | if ( gr701_hw_init(priv) ) { |
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358 | genirq_destroy(priv->genirq); |
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359 | free(priv); |
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360 | dev->priv = NULL; |
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361 | printf(" Failed to initialize GR-701 HW\n"); |
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362 | return DRVMGR_FAIL; |
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363 | } |
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364 | |
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365 | /* Init amba bus */ |
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366 | priv->config.abus = &priv->abus; |
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367 | priv->config.ops = &ambapp_gr701_ops; |
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368 | priv->config.maps_up = &priv->bus_maps_up[0]; |
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369 | priv->config.maps_down = &priv->bus_maps_down[0]; |
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370 | if ( priv->dev->minor_drv < resources_cnt ) { |
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371 | priv->config.resources = gr701_resources[priv->dev->minor_drv]; |
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372 | } else { |
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373 | priv->config.resources = NULL; |
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374 | } |
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375 | |
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376 | /* Create and register AMBA PnP bus. */ |
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377 | return ambapp_bus_register(dev, &priv->config); |
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378 | } |
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379 | |
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380 | /* Called when a PCI target is found with the PCI device and vendor ID |
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381 | * given in gr701_ids[]. |
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382 | */ |
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383 | int gr701_init2(struct drvmgr_dev *dev) |
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384 | { |
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385 | struct gr701_priv *priv = dev->priv; |
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386 | |
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387 | /* Clear any old interrupt requests */ |
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388 | drvmgr_interrupt_clear(dev, 0); |
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389 | |
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390 | /* Enable System IRQ so that GR-701 PCI target interrupt goes through. |
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391 | * |
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392 | * It is important to enable it in stage init2. If interrupts were |
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393 | * enabled in init1 this might hang the system when more than one PCI |
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394 | * board is connected, this is because PCI interrupts might be shared |
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395 | * and PCI target 2 have not initialized and might therefore drive |
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396 | * interrupt already when entering init1(). |
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397 | */ |
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398 | drvmgr_interrupt_register(dev, 0, "gr701", gr701_interrupt, priv); |
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399 | |
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400 | gr701_hw_init2(priv); |
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401 | |
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402 | return DRVMGR_OK; |
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403 | } |
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404 | |
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405 | int ambapp_gr701_int_register( |
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406 | struct drvmgr_dev *dev, |
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407 | int irq, |
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408 | const char *info, |
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409 | drvmgr_isr handler, |
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410 | void *arg) |
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411 | { |
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412 | struct gr701_priv *priv = dev->parent->dev->priv; |
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413 | rtems_interrupt_level level; |
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414 | int status; |
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415 | |
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416 | rtems_interrupt_disable(level); |
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417 | |
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418 | status = genirq_register(priv->genirq, irq, handler, arg); |
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419 | if ( status == 0 ) { |
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420 | /* Clear IRQ for first registered handler */ |
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421 | priv->pcib->iclear = (1<<irq); |
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422 | } else if ( status == 1 ) |
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423 | status = 0; |
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424 | |
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425 | if (status != 0) { |
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426 | rtems_interrupt_enable(level); |
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427 | return DRVMGR_FAIL; |
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428 | } |
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429 | |
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430 | status = genirq_enable(priv->genirq, irq, handler, arg); |
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431 | if ( status == 0 ) { |
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432 | /* Enable IRQ for first enabled handler only */ |
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433 | priv->pcib->imask |= (1<<irq); /* unmask interrupt source */ |
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434 | } else if ( status == 1 ) |
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435 | status = DRVMGR_OK; |
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436 | |
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437 | rtems_interrupt_enable(level); |
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438 | |
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439 | return status; |
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440 | } |
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441 | |
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442 | int ambapp_gr701_int_unregister( |
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443 | struct drvmgr_dev *dev, |
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444 | int irq, |
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445 | drvmgr_isr isr, |
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446 | void *arg) |
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447 | { |
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448 | struct gr701_priv *priv = dev->parent->dev->priv; |
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449 | rtems_interrupt_level level; |
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450 | int status; |
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451 | |
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452 | rtems_interrupt_disable(level); |
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453 | |
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454 | status = genirq_disable(priv->genirq, irq, isr, arg); |
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455 | if ( status == 0 ) { |
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456 | /* Disable IRQ only when no enabled handler exists */ |
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457 | priv->pcib->imask &= ~(1<<irq); /* mask interrupt source */ |
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458 | } |
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459 | |
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460 | status = genirq_unregister(priv->genirq, irq, isr, arg); |
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461 | if ( status != 0 ) |
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462 | status = DRVMGR_FAIL; |
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463 | |
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464 | rtems_interrupt_enable(level); |
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465 | |
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466 | return status; |
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467 | } |
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468 | |
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469 | int ambapp_gr701_int_unmask( |
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470 | struct drvmgr_dev *dev, |
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471 | int irq) |
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472 | { |
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473 | struct gr701_priv *priv = dev->parent->dev->priv; |
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474 | rtems_interrupt_level level; |
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475 | |
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476 | DBG("GR-701 IRQ %d: enable\n", irq); |
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477 | |
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478 | if ( genirq_check(priv->genirq, irq) ) |
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479 | return DRVMGR_FAIL; |
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480 | |
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481 | rtems_interrupt_disable(level); |
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482 | |
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483 | /* Enable IRQ */ |
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484 | priv->pcib->imask |= (1<<irq); /* unmask interrupt source */ |
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485 | |
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486 | rtems_interrupt_enable(level); |
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487 | |
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488 | return DRVMGR_OK; |
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489 | } |
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490 | |
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491 | int ambapp_gr701_int_mask( |
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492 | struct drvmgr_dev *dev, |
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493 | int irq) |
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494 | { |
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495 | struct gr701_priv *priv = dev->parent->dev->priv; |
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496 | rtems_interrupt_level level; |
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497 | |
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498 | DBG("GR-701 IRQ %d: disable\n", irq); |
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499 | |
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500 | if ( genirq_check(priv->genirq, irq) ) |
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501 | return DRVMGR_FAIL; |
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502 | |
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503 | rtems_interrupt_disable(level); |
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504 | |
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505 | /* Disable IRQ */ |
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506 | priv->pcib->imask &= ~(1<<irq); /* mask interrupt source */ |
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507 | |
---|
508 | rtems_interrupt_enable(level); |
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509 | |
---|
510 | return DRVMGR_OK; |
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511 | } |
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512 | |
---|
513 | int ambapp_gr701_int_clear( |
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514 | struct drvmgr_dev *dev, |
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515 | int irq) |
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516 | { |
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517 | struct gr701_priv *priv = dev->parent->dev->priv; |
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518 | |
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519 | if ( genirq_check(priv->genirq, irq) ) |
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520 | return DRVMGR_FAIL; |
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521 | |
---|
522 | priv->pcib->iclear = (1<<irq); |
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523 | |
---|
524 | return DRVMGR_OK; |
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525 | } |
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526 | |
---|
527 | int ambapp_gr701_get_params(struct drvmgr_dev *dev, struct drvmgr_bus_params *params) |
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528 | { |
---|
529 | struct gr701_priv *priv = dev->parent->dev->priv; |
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530 | |
---|
531 | /* Device name prefix pointer, skip /dev */ |
---|
532 | params->dev_prefix = &priv->prefix[5]; |
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533 | |
---|
534 | return 0; |
---|
535 | } |
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536 | |
---|
537 | void gr701_print_dev(struct drvmgr_dev *dev, int options) |
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538 | { |
---|
539 | struct gr701_priv *priv = dev->priv; |
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540 | struct pci_dev_info *devinfo = priv->devinfo; |
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541 | unsigned int freq_hz; |
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542 | uint32_t bar0, bar1, bar0_size, bar1_size; |
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543 | |
---|
544 | /* Print */ |
---|
545 | printf("--- GR-701 [bus 0x%x, dev 0x%x, fun 0x%x] ---\n", |
---|
546 | PCI_DEV_EXPAND(priv->pcidev)); |
---|
547 | bar0 = devinfo->resources[0].address; |
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548 | bar0_size = devinfo->resources[0].size; |
---|
549 | bar1 = devinfo->resources[1].address; |
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550 | bar1_size = devinfo->resources[1].size; |
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551 | |
---|
552 | printf(" PCI BAR[0]: 0x%lx - 0x%lx\n", bar0, bar0 + bar0_size - 1); |
---|
553 | printf(" PCI BAR[1]: 0x%lx - 0x%lx\n", bar1, bar1 + bar1_size - 1); |
---|
554 | printf(" IRQ: %d\n", devinfo->irq); |
---|
555 | |
---|
556 | /* Frequency is the same as the PCI bus frequency */ |
---|
557 | drvmgr_freq_get(dev, 0, &freq_hz); |
---|
558 | |
---|
559 | printf(" FREQ: %u Hz\n", freq_hz); |
---|
560 | printf(" IMASK: 0x%08x\n", priv->pcib->imask); |
---|
561 | printf(" IPEND: 0x%08x\n", priv->pcib->ipend); |
---|
562 | |
---|
563 | /* Print amba config */ |
---|
564 | if ( options & GR701_OPTIONS_AMBA ) { |
---|
565 | ambapp_print(&priv->abus, 10); |
---|
566 | } |
---|
567 | |
---|
568 | #if 0 |
---|
569 | /* Print IRQ handlers and their arguments */ |
---|
570 | if ( options & GR701_OPTIONS_IRQ ) { |
---|
571 | int i; |
---|
572 | for(i=0; i<16; i++) { |
---|
573 | printf(" IRQ[%02d]: 0x%x, arg: 0x%x\n", |
---|
574 | i, (unsigned int)priv->isrs[i].handler, (unsigned int)priv->isrs[i].arg); |
---|
575 | } |
---|
576 | } |
---|
577 | #endif |
---|
578 | } |
---|
579 | |
---|
580 | void gr701_print(int options) |
---|
581 | { |
---|
582 | struct pci_drv_info *drv = &gr701_info; |
---|
583 | struct drvmgr_dev *dev; |
---|
584 | |
---|
585 | dev = drv->general.dev; |
---|
586 | while(dev) { |
---|
587 | gr701_print_dev(dev, options); |
---|
588 | dev = dev->next_in_drv; |
---|
589 | } |
---|
590 | } |
---|