1 | /* |
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2 | * Macros used for grcan controller |
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3 | * |
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4 | * COPYRIGHT (c) 2007. |
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5 | * Gaisler Research |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | */ |
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12 | |
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13 | #ifndef __GRCAN_H__ |
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14 | #define __GRCAN_H__ |
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15 | |
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16 | #include <ambapp.h> |
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17 | |
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18 | #ifdef __cplusplus |
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19 | extern "C" { |
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20 | #endif |
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21 | |
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22 | struct grcan_regs { |
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23 | volatile unsigned int conf; /* 0x00 */ |
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24 | volatile unsigned int stat; /* 0x04 */ |
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25 | volatile unsigned int ctrl; /* 0x08 */ |
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26 | volatile unsigned int dummy0[3]; /* 0x0C-0x014 */ |
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27 | volatile unsigned int smask; /* 0x18 */ |
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28 | volatile unsigned int scode; /* 0x1C */ |
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29 | |
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30 | volatile unsigned int dummy1[56]; /* 0x20-0xFC */ |
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31 | |
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32 | volatile unsigned int pimsr; /* 0x100 */ |
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33 | volatile unsigned int pimr; /* 0x104 */ |
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34 | volatile unsigned int pisr; /* 0x108 */ |
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35 | volatile unsigned int pir; /* 0x10C */ |
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36 | volatile unsigned int imr; /* 0x110 */ |
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37 | volatile unsigned int picr; /* 0x114 */ |
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38 | |
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39 | volatile unsigned int dummy2[58]; /* 0x118-0x1FC */ |
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40 | |
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41 | volatile unsigned int tx0ctrl; /* 0x200 */ |
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42 | volatile unsigned int tx0addr; /* 0x204 */ |
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43 | volatile unsigned int tx0size; /* 0x208 */ |
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44 | volatile unsigned int tx0wr; /* 0x20C */ |
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45 | volatile unsigned int tx0rd; /* 0x210 */ |
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46 | volatile unsigned int tx0irq; /* 0x214 */ |
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47 | |
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48 | volatile unsigned int dummy3[58]; /* 0x218-0x2FC */ |
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49 | |
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50 | volatile unsigned int rx0ctrl; /* 0x300 */ |
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51 | volatile unsigned int rx0addr; /* 0x304 */ |
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52 | volatile unsigned int rx0size; /* 0x308 */ |
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53 | volatile unsigned int rx0wr; /* 0x30C */ |
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54 | volatile unsigned int rx0rd; /* 0x310 */ |
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55 | volatile unsigned int rx0irq; /* 0x314 */ |
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56 | volatile unsigned int rx0mask; /* 0x318 */ |
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57 | volatile unsigned int rx0code; /* 0x31C */ |
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58 | }; |
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59 | |
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60 | struct grcan_stats { |
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61 | unsigned int passive_cnt; |
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62 | unsigned int overrun_cnt; |
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63 | unsigned int rxsync_cnt; |
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64 | unsigned int txsync_cnt; |
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65 | unsigned int txloss_cnt; |
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66 | unsigned int ahberr_cnt; |
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67 | unsigned int ints; |
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68 | }; |
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69 | |
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70 | struct grcan_timing { |
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71 | unsigned char scaler; |
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72 | unsigned char ps1; |
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73 | unsigned char ps2; |
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74 | unsigned int rsj; |
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75 | unsigned char bpr; |
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76 | }; |
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77 | |
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78 | struct grcan_selection { |
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79 | int selection; |
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80 | int enable0; |
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81 | int enable1; |
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82 | }; |
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83 | |
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84 | struct grcan_filter { |
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85 | unsigned long long mask; |
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86 | unsigned long long code; |
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87 | }; |
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88 | |
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89 | /* CAN MESSAGE */ |
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90 | typedef struct { |
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91 | char extended; /* 1= Extended Frame (29-bit id), 0= STD Frame (11-bit id) */ |
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92 | char rtr; /* RTR - Remote Transmission Request */ |
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93 | char unused; /* unused */ |
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94 | unsigned char len; |
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95 | unsigned char data[8]; |
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96 | unsigned int id; |
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97 | } CANMsg; |
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98 | |
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99 | #define GRCAN_CFG_ABORT 0x00000001 |
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100 | #define GRCAN_CFG_ENABLE0 0x00000002 |
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101 | #define GRCAN_CFG_ENABLE1 0x00000004 |
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102 | #define GRCAN_CFG_SELECTION 0x00000008 |
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103 | #define GRCAN_CFG_SILENT 0x00000010 |
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104 | #define GRCAN_CFG_BPR 0x00000300 |
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105 | #define GRCAN_CFG_RSJ 0x00007000 |
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106 | #define GRCAN_CFG_PS1 0x00f00000 |
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107 | #define GRCAN_CFG_PS2 0x000f0000 |
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108 | #define GRCAN_CFG_SCALER 0xff000000 |
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109 | |
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110 | #define GRCAN_CFG_BPR_BIT 8 |
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111 | #define GRCAN_CFG_RSJ_BIT 12 |
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112 | #define GRCAN_CFG_PS1_BIT 20 |
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113 | #define GRCAN_CFG_PS2_BIT 16 |
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114 | #define GRCAN_CFG_SCALER_BIT 24 |
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115 | |
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116 | #define GRCAN_CTRL_RESET 0x2 |
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117 | #define GRCAN_CTRL_ENABLE 0x1 |
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118 | |
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119 | #define GRCAN_TXCTRL_ENABLE 1 |
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120 | #define GRCAN_TXCTRL_ONGOING 1 |
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121 | |
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122 | #define GRCAN_RXCTRL_ENABLE 1 |
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123 | #define GRCAN_RXCTRL_ONGOING 1 |
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124 | |
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125 | /* Relative offset of IRQ sources to AMBA Plug&Play */ |
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126 | #define GRCAN_IRQ_IRQ 0 |
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127 | #define GRCAN_IRQ_TXSYNC 1 |
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128 | #define GRCAN_IRQ_RXSYNC 2 |
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129 | |
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130 | #define GRCAN_ERR_IRQ 0x1 |
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131 | #define GRCAN_OFF_IRQ 0x2 |
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132 | #define GRCAN_OR_IRQ 0x4 |
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133 | #define GRCAN_RXAHBERR_IRQ 0x8 |
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134 | #define GRCAN_TXAHBERR_IRQ 0x10 |
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135 | #define GRCAN_RXIRQ_IRQ 0x20 |
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136 | #define GRCAN_TXIRQ_IRQ 0x40 |
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137 | #define GRCAN_RXFULL_IRQ 0x80 |
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138 | #define GRCAN_TXEMPTY_IRQ 0x100 |
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139 | #define GRCAN_RX_IRQ 0x200 |
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140 | #define GRCAN_TX_IRQ 0x400 |
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141 | #define GRCAN_RXSYNC_IRQ 0x800 |
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142 | #define GRCAN_TXSYNC_IRQ 0x1000 |
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143 | #define GRCAN_RXERR_IRQ 0x2000 |
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144 | #define GRCAN_TXERR_IRQ 0x4000 |
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145 | #define GRCAN_RXMISS_IRQ 0x8000 |
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146 | #define GRCAN_TXLOSS_IRQ 0x10000 |
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147 | |
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148 | #define GRCAN_STAT_PASS 0x1 |
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149 | #define GRCAN_STAT_OFF 0x2 |
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150 | #define GRCAN_STAT_OR 0x4 |
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151 | #define GRCAN_STAT_AHBERR 0x8 |
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152 | #define GRCAN_STAT_ACTIVE 0x10 |
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153 | #define GRCAN_STAT_RXERRCNT 0xff00 |
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154 | #define GRCAN_STAT_TXERRCNT 0xff0000 |
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155 | |
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156 | /* IOCTL Commands controlling operational |
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157 | * mode |
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158 | */ |
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159 | #define GRCAN_IOC_START 1 /* Bring the link up after open or bus-off */ |
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160 | #define GRCAN_IOC_STOP 2 /* stop to change baud rate/config or closing down */ |
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161 | #define GRCAN_IOC_ISSTARTED 3 /* return RTEMS_SUCCESSFUL when started, othervise EBUSY */ |
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162 | #define GRCAN_IOC_FLUSH 4 /* Waits until all TX messages has been sent */ |
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163 | |
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164 | /* IOCTL Commands that require connection |
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165 | * to be stopped |
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166 | */ |
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167 | #define GRCAN_IOC_SET_SILENT 16 /* enable silent mode read only state */ |
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168 | #define GRCAN_IOC_SET_ABORT 17 /* enable/disable stopping link on AHB Error */ |
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169 | #define GRCAN_IOC_SET_SELECTION 18 /* Set Enable0,Enable1,Selection */ |
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170 | #define GRCAN_IOC_SET_SPEED 19 /* Set baudrate by using driver's baud rate timing calculation routines */ |
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171 | #define GRCAN_IOC_SET_BTRS 20 /* Set baudrate by specifying the timing registers manually */ |
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172 | |
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173 | /* IOCTL Commands can be called whenever */ |
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174 | #define GRCAN_IOC_SET_RXBLOCK 32 /* Enable/disable Blocking on reception (until at least one message has been received) */ |
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175 | #define GRCAN_IOC_SET_TXBLOCK 33 /* Enable/disable Blocking on transmission (until at least one message has been transmitted) */ |
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176 | #define GRCAN_IOC_SET_TXCOMPLETE 34 /* Enable/disable Blocking until all requested messages has been sent */ |
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177 | #define GRCAN_IOC_SET_RXCOMPLETE 35 /* Enable/disable Blocking until all requested has been received */ |
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178 | #define GRCAN_IOC_GET_STATS 36 /* Get Statistics */ |
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179 | #define GRCAN_IOC_CLR_STATS 37 /* Clear Statistics */ |
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180 | #define GRCAN_IOC_SET_AFILTER 38 /* Set Acceptance filters, provide pointer to "struct grcan_filter" or NULL to disable filtering (let all messages pass) */ |
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181 | #define GRCAN_IOC_SET_SFILTER 40 /* Set Sync Messages RX/TX filters, NULL disables the IRQ completely */ |
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182 | #define GRCAN_IOC_GET_STATUS 41 /* Get status register of GRCAN core */ |
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183 | |
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184 | struct grcan_device_info { |
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185 | unsigned int base_address; |
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186 | int irq; |
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187 | }; |
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188 | |
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189 | /* Use hard coded addresses and IRQs to find hardware */ |
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190 | int grcan_register_abs(struct grcan_device_info *devices, int dev_cnt); |
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191 | |
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192 | /* Use prescanned AMBA Plug&Play information to find all GRFIFO cores */ |
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193 | int grcan_register(amba_confarea_type *abus); |
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194 | #if 0 |
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195 | void grcan_register(unsigned int baseaddr, unsigned int ram_base); |
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196 | void grcan_interrupt_handler(rtems_vector_number v); |
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197 | #endif |
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198 | |
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199 | #ifdef __cplusplus |
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200 | } |
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201 | #endif |
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202 | |
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203 | #endif |
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