1 | #include <rtems.h> |
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2 | #include <sys/mbuf.h> |
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3 | #include <irq.h> |
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4 | #include <libchip/cs8900.h> |
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5 | |
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6 | #define CS8900_BASE 0x20000300 |
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7 | unsigned int bsp_cs8900_io_base = 0; |
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8 | unsigned int bsp_cs8900_memory_base = 0; |
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9 | cs8900_device *g_cs; |
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10 | rtems_irq_hdl cs8900_isr(rtems_vector_number v); |
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11 | rtems_irq_connect_data cs8900_isr_data = {BSP_EINT3, |
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12 | (rtems_irq_hdl)cs8900_isr, |
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13 | NULL, |
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14 | NULL, |
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15 | NULL, |
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16 | 0, |
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17 | 0 }; |
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18 | |
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19 | char g_enetbuf[1520]; |
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20 | |
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21 | rtems_irq_hdl cs8900_isr(rtems_vector_number v) |
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22 | { |
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23 | cs8900_interrupt(v, g_cs); |
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24 | } |
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25 | |
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26 | /* cs8900_io_set_reg - set one of the I/O addressed registers */ |
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27 | void cs8900_io_set_reg (int dev, unsigned short reg, unsigned short data) |
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28 | { |
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29 | /* works the same for all values of dev */ |
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30 | /* |
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31 | printf("cs8900_io_set_reg: reg: %#6x, val %#6x\n", |
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32 | CS8900_BASE + reg, |
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33 | data); |
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34 | */ |
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35 | *(unsigned short *)(CS8900_BASE + reg) = data; |
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36 | } |
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37 | |
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38 | /* cs8900_io_get_reg - reads one of the I/O addressed registers */ |
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39 | unsigned short cs8900_io_get_reg (int dev, unsigned short reg) |
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40 | { |
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41 | unsigned short val; |
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42 | /* works the same for all values of dev */ |
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43 | val = *(unsigned short *)(CS8900_BASE + reg); |
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44 | /* |
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45 | printf("cs8900_io_get_reg: reg: %#6x, val %#6x\n", reg, val); |
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46 | */ |
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47 | return val; |
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48 | } |
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49 | |
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50 | /* cs8900_mem_set_reg - sets one of the registers mapped through |
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51 | * PacketPage |
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52 | */ |
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53 | void cs8900_mem_set_reg (int dev, unsigned long reg, unsigned short data) |
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54 | { |
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55 | /* works the same for all values of dev */ |
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56 | cs8900_io_set_reg(dev, CS8900_IO_PACKET_PAGE_PTR, reg); |
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57 | cs8900_io_set_reg(dev, CS8900_IO_PP_DATA_PORT0, data); |
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58 | } |
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59 | |
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60 | /* cs8900_mem_get_reg - reads one of the registers mapped through |
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61 | * PacketPage |
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62 | */ |
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63 | unsigned short cs8900_mem_get_reg (int dev, unsigned long reg) |
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64 | { |
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65 | /* works the same for all values of dev */ |
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66 | cs8900_io_set_reg(dev, CS8900_IO_PACKET_PAGE_PTR, reg); |
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67 | return cs8900_io_get_reg(dev, CS8900_IO_PP_DATA_PORT0); |
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68 | } |
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69 | |
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70 | void cs8900_get_mac_addr (int dev, unsigned char *mac_address) |
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71 | { |
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72 | mac_address[0] = 0x08; |
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73 | mac_address[1] = 0x00; |
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74 | mac_address[2] = 0x3e; |
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75 | mac_address[3] = 0x21; |
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76 | mac_address[4] = 0xc7; |
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77 | mac_address[5] = 0xf7; |
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78 | } |
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79 | |
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80 | void cs8900_attach_interrupt (int dev, cs8900_device *cs) |
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81 | { |
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82 | g_cs = cs; |
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83 | BSP_install_rtems_irq_handler(&cs8900_isr_data); |
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84 | } |
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85 | |
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86 | void cs8900_detach_interrupt (int dev) |
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87 | { |
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88 | BSP_remove_rtems_irq_handler(&cs8900_isr_data); |
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89 | } |
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90 | |
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91 | unsigned short cs8900_get_data_block (int dev, unsigned char *data) |
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92 | { |
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93 | int len; |
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94 | int i; |
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95 | |
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96 | len = cs8900_mem_get_reg(dev, CS8900_PP_RxLength); |
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97 | |
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98 | for (i = 0; i < ((len + 1) / 2); i++) { |
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99 | ((short *)data)[i] = cs8900_io_get_reg(dev, |
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100 | CS8900_IO_RX_TX_DATA_PORT0); |
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101 | } |
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102 | return len; |
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103 | } |
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104 | |
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105 | void cs8900_tx_load (int dev, struct mbuf *m) |
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106 | { |
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107 | int len; |
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108 | short *data; |
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109 | int i; |
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110 | |
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111 | len = 0; |
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112 | |
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113 | do { |
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114 | memcpy(&g_enetbuf[len], mtod(m, const void *), m->m_len); |
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115 | len += m->m_len; |
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116 | m = m->m_next; |
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117 | } while (m != 0); |
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118 | |
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119 | data = (unsigned short *) &g_enetbuf[0]; |
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120 | for (i = 0; i < ((len + 1) / 2); i++) { |
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121 | cs8900_io_set_reg(dev, |
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122 | CS8900_IO_RX_TX_DATA_PORT0, |
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123 | data[i]); |
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124 | } |
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125 | } |
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