1 | /*$Id$*/ |
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2 | |
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3 | /* Implementation of the VME.h and VMEDMA.h APIs for the BSP using the |
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4 | * vmeUniverse/vmeTsi148 drivers |
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5 | * |
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6 | * This file is named vme_universe.c for historic reasons. |
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7 | */ |
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8 | |
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9 | |
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10 | #include <rtems.h> |
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11 | #include <bsp.h> |
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12 | #include <bsp/VME.h> |
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13 | #include <bsp/VMEDMA.h> |
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14 | #include <bsp/VMEConfig.h> |
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15 | #include <bsp/irq.h> |
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16 | #include <stdio.h> |
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17 | |
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18 | #define __INSIDE_RTEMS_BSP__ |
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19 | |
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20 | #if !defined(_VME_DRIVER_TSI148) && !defined(_VME_DRIVER_UNIVERSE) |
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21 | #define _VME_DRIVER_UNIVERSE |
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22 | #endif |
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23 | |
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24 | #if defined(_VME_DRIVER_TSI148) |
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25 | #define _VME_TSI148_DECLARE_SHOW_ROUTINES |
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26 | #include <bsp/vmeTsi148.h> |
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27 | #include <bsp/vmeTsi148DMA.h> |
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28 | #endif |
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29 | |
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30 | #if defined(_VME_DRIVER_UNIVERSE) |
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31 | #define _VME_UNIVERSE_DECLARE_SHOW_ROUTINES |
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32 | #include <bsp/vmeUniverse.h> |
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33 | #include <bsp/vmeUniverseDMA.h> |
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34 | #if !defined(BSP_VME_INSTALL_IRQ_MGR) && defined(BSP_VME_UNIVERSE_INSTALL_IRQ_MGR) |
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35 | #define BSP_VME_INSTALL_IRQ_MGR BSP_VME_UNIVERSE_INSTALL_IRQ_MGR |
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36 | #endif |
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37 | #endif |
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38 | |
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39 | #include <bsp/bspVmeDmaList.h> |
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40 | |
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41 | /* Wrap BSP VME calls around driver calls - we do this so EPICS doesn't have to |
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42 | * include bridge-specific headers. This file provides the necessary glue |
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43 | * to make VME.h and vmeconfig.c independent of the bridge chip. |
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44 | * |
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45 | * This file is named 'vme_universe.c' for historical reasons. |
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46 | */ |
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47 | |
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48 | /* |
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49 | * Authorship |
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50 | * ---------- |
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51 | * This software was created by |
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52 | * Till Straumann <strauman@slac.stanford.edu>, 9/2005, |
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53 | * Stanford Linear Accelerator Center, Stanford University. |
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54 | * |
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55 | * Acknowledgement of sponsorship |
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56 | * ------------------------------ |
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57 | * This software was produced by |
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58 | * the Stanford Linear Accelerator Center, Stanford University, |
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59 | * under Contract DE-AC03-76SFO0515 with the Department of Energy. |
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60 | * |
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61 | * Government disclaimer of liability |
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62 | * ---------------------------------- |
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63 | * Neither the United States nor the United States Department of Energy, |
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64 | * nor any of their employees, makes any warranty, express or implied, or |
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65 | * assumes any legal liability or responsibility for the accuracy, |
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66 | * completeness, or usefulness of any data, apparatus, product, or process |
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67 | * disclosed, or represents that its use would not infringe privately owned |
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68 | * rights. |
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69 | * |
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70 | * Stanford disclaimer of liability |
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71 | * -------------------------------- |
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72 | * Stanford University makes no representations or warranties, express or |
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73 | * implied, nor assumes any liability for the use of this software. |
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74 | * |
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75 | * Stanford disclaimer of copyright |
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76 | * -------------------------------- |
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77 | * Stanford University, owner of the copyright, hereby disclaims its |
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78 | * copyright and all other rights in this software. Hence, anyone may |
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79 | * freely use it for any purpose without restriction. |
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80 | * |
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81 | * Maintenance of notices |
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82 | * ---------------------- |
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83 | * In the interest of clarity regarding the origin and status of this |
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84 | * SLAC software, this and all the preceding Stanford University notices |
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85 | * are to remain affixed to any copy or derivative of this software made |
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86 | * or distributed by the recipient and are to be affixed to any copy of |
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87 | * software made or distributed by the recipient that contains a copy or |
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88 | * derivative of this software. |
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89 | * |
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90 | * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 |
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91 | */ |
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92 | typedef struct { |
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93 | int (*xlate_adrs)(int, int, unsigned long, unsigned long, unsigned long *); |
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94 | int (*install_isr)(unsigned long, BSP_VME_ISR_t, void *); |
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95 | int (*remove_isr)(unsigned long, BSP_VME_ISR_t, void *); |
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96 | BSP_VME_ISR_t (*get_isr)(unsigned long vector, void **); |
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97 | int (*enable_int_lvl)(unsigned int); |
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98 | int (*disable_int_lvl)(unsigned int); |
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99 | int (*outbound_p_cfg)(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); |
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100 | int (*inbound_p_cfg) (unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); |
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101 | void (*outbound_p_show)(FILE*); |
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102 | void (*inbound_p_show) (FILE*); |
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103 | int (*install_irq_mgr)(int, int, int, ...); |
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104 | int irq_mgr_flags; |
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105 | } VMEOpsRec, *VMEOps; |
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106 | |
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107 | /* two separate 'ops' structs for historic reasons */ |
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108 | typedef struct DmaOpsRec_ { |
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109 | int (*setup)(int, uint32_t, uint32_t, void *); |
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110 | int (*start)(int, uint32_t, uint32_t, uint32_t); |
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111 | uint32_t (*status)(int); |
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112 | VMEDmaListClass listClass; |
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113 | int nChannels; |
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114 | int *vectors; |
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115 | } DmaOpsRec, *DmaOps; |
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116 | |
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117 | #ifdef _VME_DRIVER_UNIVERSE |
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118 | static VMEOpsRec uniOpsRec = { |
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119 | xlate_adrs: vmeUniverseXlateAddr, |
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120 | install_isr: vmeUniverseInstallISR, |
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121 | remove_isr: vmeUniverseRemoveISR, |
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122 | get_isr: vmeUniverseISRGet, |
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123 | enable_int_lvl: vmeUniverseIntEnable, |
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124 | disable_int_lvl: vmeUniverseIntDisable, |
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125 | outbound_p_cfg: vmeUniverseMasterPortCfg, |
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126 | inbound_p_cfg: vmeUniverseSlavePortCfg, |
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127 | outbound_p_show: vmeUniverseMasterPortsShow, |
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128 | inbound_p_show: vmeUniverseSlavePortsShow, |
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129 | install_irq_mgr: vmeUniverseInstallIrqMgrAlt, |
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130 | irq_mgr_flags: VMEUNIVERSE_IRQ_MGR_FLAG_SHARED | |
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131 | VMEUNIVERSE_IRQ_MGR_FLAG_PW_WORKAROUND, |
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132 | }; |
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133 | |
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134 | static int uniVecs[] = { UNIV_DMA_INT_VEC }; |
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135 | |
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136 | static DmaOpsRec uniDmaOpsRec = { |
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137 | setup: vmeUniverseDmaSetup, |
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138 | start: vmeUniverseDmaStart, |
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139 | status: vmeUniverseDmaStatus, |
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140 | listClass: &vmeUniverseDmaListClass, |
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141 | nChannels: 1, |
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142 | vectors: uniVecs, |
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143 | }; |
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144 | #endif |
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145 | |
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146 | #ifdef _VME_DRIVER_TSI148 |
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147 | static VMEOpsRec tsiOpsRec = { |
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148 | xlate_adrs: vmeTsi148XlateAddr, |
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149 | install_isr: vmeTsi148InstallISR, |
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150 | remove_isr: vmeTsi148RemoveISR, |
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151 | get_isr: vmeTsi148ISRGet, |
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152 | enable_int_lvl: vmeTsi148IntEnable, |
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153 | disable_int_lvl: vmeTsi148IntDisable, |
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154 | outbound_p_cfg: vmeTsi148OutboundPortCfg, |
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155 | inbound_p_cfg: vmeTsi148InboundPortCfg, |
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156 | outbound_p_show: vmeTsi148OutboundPortsShow, |
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157 | inbound_p_show: vmeTsi148InboundPortsShow, |
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158 | install_irq_mgr: vmeTsi148InstallIrqMgrAlt, |
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159 | irq_mgr_flags: VMETSI148_IRQ_MGR_FLAG_SHARED, |
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160 | }; |
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161 | |
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162 | static int tsiVecs[] = { |
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163 | TSI_DMA_INT_VEC, |
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164 | TSI_DMA1_INT_VEC, |
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165 | }; |
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166 | |
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167 | static DmaOpsRec tsiDmaOpsRec = { |
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168 | setup: vmeTsi148DmaSetup, |
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169 | start: vmeTsi148DmaStart, |
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170 | status: vmeTsi148DmaStatus, |
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171 | listClass: &vmeTsi148DmaListClass, |
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172 | nChannels: 2, |
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173 | vectors: tsiVecs, |
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174 | }; |
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175 | #endif |
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176 | |
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177 | static VMEOps theOps = 0; |
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178 | static DmaOps theDmaOps = 0; |
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179 | |
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180 | int |
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181 | BSP_vme2local_adrs(unsigned long am, unsigned long vmeaddr, unsigned long *plocaladdr) |
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182 | { |
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183 | int rval=theOps->xlate_adrs(1,0,am,vmeaddr,plocaladdr); |
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184 | *plocaladdr+=PCI_MEM_BASE; |
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185 | return rval; |
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186 | } |
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187 | |
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188 | int |
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189 | BSP_local2vme_adrs(unsigned long am, unsigned long localaddr, unsigned long *pvmeaddr) |
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190 | { |
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191 | return theOps->xlate_adrs(0, 0, am,localaddr+PCI_DRAM_OFFSET,pvmeaddr); |
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192 | } |
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193 | |
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194 | int |
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195 | BSP_installVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *arg) |
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196 | { |
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197 | return theOps->install_isr(vector, handler, arg); |
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198 | } |
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199 | |
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200 | int |
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201 | BSP_removeVME_isr(unsigned long vector, BSP_VME_ISR_t handler, void *arg) |
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202 | { |
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203 | return theOps->remove_isr(vector, handler, arg); |
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204 | } |
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205 | |
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206 | /* retrieve the currently installed ISR for a given vector */ |
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207 | BSP_VME_ISR_t |
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208 | BSP_getVME_isr(unsigned long vector, void **parg) |
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209 | { |
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210 | return theOps->get_isr(vector, parg); |
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211 | } |
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212 | |
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213 | int |
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214 | BSP_enableVME_int_lvl(unsigned int level) |
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215 | { |
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216 | return theOps->enable_int_lvl(level); |
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217 | } |
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218 | |
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219 | int |
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220 | BSP_disableVME_int_lvl(unsigned int level) |
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221 | { |
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222 | return theOps->disable_int_lvl(level); |
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223 | } |
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224 | |
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225 | int |
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226 | BSP_VMEOutboundPortCfg( |
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227 | unsigned long port, |
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228 | unsigned long address_space, |
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229 | unsigned long vme_address, |
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230 | unsigned long pci_address, |
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231 | unsigned long size) |
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232 | { |
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233 | return theOps->outbound_p_cfg(port, address_space, vme_address, pci_address, size); |
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234 | } |
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235 | |
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236 | int |
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237 | BSP_VMEInboundPortCfg( |
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238 | unsigned long port, |
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239 | unsigned long address_space, |
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240 | unsigned long vme_address, |
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241 | unsigned long pci_address, |
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242 | unsigned long size) |
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243 | { |
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244 | return theOps->inbound_p_cfg(port, address_space, vme_address, pci_address, size); |
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245 | } |
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246 | |
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247 | void |
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248 | BSP_VMEOutboundPortsShow(FILE *f) |
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249 | { |
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250 | theOps->outbound_p_show(f); |
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251 | } |
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252 | |
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253 | void |
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254 | BSP_VMEInboundPortsShow(FILE *f) |
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255 | { |
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256 | theOps->inbound_p_show(f); |
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257 | } |
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258 | |
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259 | int |
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260 | BSP_VMEDmaSetup(int channel, uint32_t bus_mode, uint32_t xfer_mode, void *custom_setup) |
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261 | { |
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262 | return theDmaOps->setup(channel, bus_mode, xfer_mode, custom_setup); |
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263 | } |
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264 | |
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265 | int |
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266 | BSP_VMEDmaStart(int channel, uint32_t pci_addr, uint32_t vme_addr, uint32_t n_bytes) |
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267 | { |
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268 | return theDmaOps->start(channel, pci_addr, vme_addr, n_bytes); |
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269 | } |
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270 | |
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271 | uint32_t |
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272 | BSP_VMEDmaStatus(int channel) |
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273 | { |
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274 | return theDmaOps->status(channel); |
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275 | } |
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276 | |
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277 | BSP_VMEDmaListDescriptor |
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278 | BSP_VMEDmaListDescriptorSetup( |
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279 | BSP_VMEDmaListDescriptor d, |
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280 | uint32_t attr_mask, |
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281 | uint32_t xfer_mode, |
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282 | uint32_t pci_addr, |
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283 | uint32_t vme_addr, |
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284 | uint32_t n_bytes) |
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285 | { |
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286 | VMEDmaListClass pc; |
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287 | |
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288 | if ( !d ) { |
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289 | |
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290 | pc = theDmaOps->listClass; |
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291 | |
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292 | return BSP_VMEDmaListDescriptorNewTool( |
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293 | pc, |
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294 | attr_mask, |
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295 | xfer_mode, |
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296 | pci_addr, |
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297 | vme_addr, |
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298 | n_bytes); |
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299 | |
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300 | } |
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301 | |
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302 | return BSP_VMEDmaListDescriptorSetupTool(d, attr_mask, xfer_mode, pci_addr, vme_addr, n_bytes); |
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303 | } |
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304 | |
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305 | int |
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306 | BSP_VMEDmaListStart(int channel, BSP_VMEDmaListDescriptor list) |
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307 | { |
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308 | return BSP_VMEDmaListDescriptorStartTool(0, channel, list); |
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309 | } |
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310 | |
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311 | /* NOT thread safe! */ |
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312 | int |
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313 | BSP_VMEDmaInstallISR(int channel, BSP_VMEDmaIRQCallback cb, void *usr_arg) |
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314 | { |
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315 | int vec; |
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316 | BSP_VME_ISR_t curr; |
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317 | void *carg; |
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318 | |
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319 | if ( channel < 0 || channel >= theDmaOps->nChannels ) |
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320 | return -1; |
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321 | |
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322 | vec = theDmaOps->vectors[channel]; |
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323 | |
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324 | curr = BSP_getVME_isr(vec, &carg); |
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325 | |
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326 | if ( cb && curr ) { |
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327 | /* IRQ currently in use */ |
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328 | return -1; |
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329 | } |
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330 | |
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331 | if ( !cb && !curr ) { |
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332 | /* Allow uninstall if no handler is currently installed; |
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333 | * just make sure IRQ is disabled |
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334 | */ |
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335 | BSP_disableVME_int_lvl(vec); |
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336 | return 0; |
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337 | } |
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338 | |
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339 | if ( cb ) { |
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340 | if ( BSP_installVME_isr(vec, (BSP_VME_ISR_t)cb, usr_arg) ) |
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341 | return -4; |
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342 | BSP_enableVME_int_lvl(vec); |
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343 | } else { |
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344 | BSP_disableVME_int_lvl(vec); |
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345 | if ( BSP_removeVME_isr(vec, curr, carg) ) |
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346 | return -4; |
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347 | } |
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348 | return 0; |
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349 | } |
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350 | |
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351 | #if defined(_VME_DRIVER_TSI148) && !defined(VME_CLEAR_BRIDGE_ERRORS) |
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352 | static unsigned short |
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353 | tsi_clear_errors(int quiet) |
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354 | { |
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355 | unsigned long v; |
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356 | unsigned short rval; |
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357 | v = vmeTsi148ClearVMEBusErrors(0); |
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358 | |
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359 | /* return bits 8..23 of VEAT; set bit 15 to make sure rval is nonzero on error */ |
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360 | rval = v ? ((v>>8) & 0xffff) | (1<<15) : 0; |
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361 | return rval; |
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362 | } |
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363 | |
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364 | #define VME_CLEAR_BRIDGE_ERRORS tsi_clear_errors |
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365 | #endif |
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366 | |
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367 | int BSP_VMEInit() |
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368 | { |
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369 | #if defined(_VME_DRIVER_UNIVERSE) |
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370 | if ( 0 == vmeUniverseInit() ) { |
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371 | theOps = &uniOpsRec; |
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372 | theDmaOps = &uniDmaOpsRec; |
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373 | vmeUniverseReset(); |
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374 | } |
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375 | #endif |
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376 | #if defined(_VME_DRIVER_UNIVERSE) && defined(_VME_DRIVER_TSI148) |
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377 | else |
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378 | #endif |
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379 | #if defined(_VME_DRIVER_TSI148) |
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380 | if ( 0 == vmeTsi148Init() ) { |
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381 | theOps = &tsiOpsRec; |
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382 | theDmaOps = &tsiDmaOpsRec; |
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383 | vmeTsi148Reset(); |
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384 | #ifdef VME_CLEAR_BRIDGE_ERRORS |
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385 | { |
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386 | extern unsigned short (*_BSP_clear_vmebridge_errors)(); |
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387 | |
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388 | _BSP_clear_vmebridge_errors = VME_CLEAR_BRIDGE_ERRORS; |
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389 | |
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390 | } |
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391 | #endif |
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392 | } |
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393 | #endif |
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394 | else |
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395 | /* maybe no VME at all - or no universe/tsi148 ... */ |
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396 | return -1; |
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397 | |
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398 | return 0; |
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399 | } |
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400 | |
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401 | int BSP_VMEIrqMgrInstall() |
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402 | { |
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403 | int err; |
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404 | #ifndef BSP_VME_INSTALL_IRQ_MGR |
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405 | /* No map; use first line only and obtain PIC wire from PCI config */ |
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406 | err = theOps->install_irq_mgr( |
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407 | theOps->irq_mgr_flags, /* use shared IRQs */ |
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408 | 0, -1, /* Universe/Tsi148 pin0 -> PIC line from config space */ |
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409 | -1 /* terminate list */ |
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410 | ); |
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411 | #else |
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412 | BSP_VME_INSTALL_IRQ_MGR(err); |
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413 | #endif |
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414 | |
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415 | if ( err ) |
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416 | return err; |
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417 | |
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418 | /* This feature is only supported by the Universe driver (not Tsi148) */ |
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419 | #if defined(BSP_PCI_VME_DRIVER_DOES_EOI) && defined(BSP_PIC_DO_EOI) |
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420 | #ifdef _VME_DRIVER_TSI148 |
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421 | #error "BSP_PCI_VME_DRIVER_DOES_EOI/BSP_PIC_DO_EOI feature can only be used with vmeUniverse" |
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422 | #endif |
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423 | if ( vmeUniverse0PciIrqLine < 0 ) |
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424 | BSP_panic("Unable to get universe interrupt line info from PCI config"); |
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425 | _BSP_vme_bridge_irq = vmeUniverse0PciIrqLine; |
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426 | #endif |
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427 | return 0; |
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428 | } |
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