1 | /* |
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2 | * Copyright (c) 2004,2005 RTEMS/Mvme5500 port by S. Kate Feng <feng1@bnl.gov> |
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3 | * Brookhaven National Laboratory, All rights reserved |
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4 | * |
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5 | * Acknowledgements: |
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6 | * netBSD : Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc. |
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7 | * Jason R. Thorpe for Wasabi Systems, Inc. |
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8 | * Intel : NDA document |
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9 | * |
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10 | * Some notes from the author, S. Kate Feng : |
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11 | * |
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12 | * 1) The error reporting routine i82544EI_error() employs two pointers |
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13 | * for the error report buffer. One for the ISR and another one for |
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14 | * the error report. |
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15 | * 2) Enable the hardware Auto-Negotiation state machine. |
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16 | * 3) Set Big Endian mode in the WMREG_CTRL so that we do not need htole32 |
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17 | * because PPC is big endian mode. |
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18 | * However, the data packet structure defined in if_wmreg.h |
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19 | * should be redefined for the big endian mode. |
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20 | * 4) To ensure the cache coherence, the MOTLoad had the PCI |
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21 | * snoop control registers (0x1f00) set to "snoop to WB region" for |
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22 | * the entire 512MB of memory. |
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23 | * 5) MOTLoad default : |
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24 | * little endian mode, cache line size is 32 bytes, no checksum control, |
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25 | * hardware auto-neg. state machine disabled. PCI control "snoop |
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26 | * to WB region", MII mode (PHY) instead of TBI mode. |
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27 | * 6) We currently only use 32-bit (instead of 64-bit) DMA addressing. |
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28 | * 7) Support for checksum offloading and TCP segmentation offload will |
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29 | * be available for releasing in 2008, upon request, if I still believe. |
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30 | * |
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31 | */ |
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32 | |
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33 | #define BYTE_ORDER BIG_ENDIAN |
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34 | |
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35 | #define INET |
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36 | |
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37 | #include <rtems.h> |
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38 | #include <rtems/bspIo.h> /* printk */ |
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39 | #include <stdio.h> /* printf for statistics */ |
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40 | #include <string.h> |
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41 | |
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42 | #include <libcpu/io.h> /* inp & friends */ |
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43 | #include <libcpu/spr.h> /* registers.h is included here */ |
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44 | #include <bsp.h> |
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45 | |
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46 | #include <sys/param.h> |
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47 | #include <sys/systm.h> |
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48 | #include <sys/mbuf.h> |
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49 | |
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50 | #include <rtems/rtems_bsdnet.h> |
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51 | #include <rtems/rtems_bsdnet_internal.h> |
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52 | #include <rtems/error.h> |
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53 | #include <errno.h> |
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54 | |
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55 | #include <rtems/rtems/types.h> |
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56 | #include <rtems/score/cpu.h> |
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57 | |
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58 | #include <sys/queue.h> |
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59 | |
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60 | #include <sys/ioctl.h> |
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61 | #include <sys/socket.h> |
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62 | #include <sys/sockio.h> /* SIOCADDMULTI, SIOC... */ |
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63 | #include <net/if.h> |
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64 | #include <net/if_dl.h> |
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65 | #include <netinet/in.h> |
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66 | #include <netinet/if_ether.h> |
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67 | |
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68 | #ifdef INET |
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69 | #include <netinet/in_var.h> |
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70 | #endif |
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71 | |
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72 | #include <bsp/irq.h> |
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73 | #include <bsp/pci.h> |
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74 | #include <bsp/pcireg.h> |
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75 | #include <bsp/if_wmreg.h> |
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76 | #define WMREG_RADV 0x282c /* Receive Interrupt Absolute Delay Timer */ |
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77 | |
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78 | /*#define CKSUM_OFFLOAD*/ |
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79 | |
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80 | #define ETHERTYPE_FLOWCONTROL 0x8808 /* 802.3x flow control packet */ |
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81 | |
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82 | #define i82544EI_TASK_NAME "IGHZ" |
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83 | #define SOFTC_ALIGN 4095 |
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84 | |
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85 | #define INTR_ERR_SIZE 16 |
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86 | |
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87 | /*#define WM_DEBUG*/ |
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88 | #ifdef WM_DEBUG |
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89 | #define WM_DEBUG_LINK 0x01 |
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90 | #define WM_DEBUG_TX 0x02 |
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91 | #define WM_DEBUG_RX 0x04 |
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92 | #define WM_DEBUG_GMII 0x08 |
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93 | int wm_debug = WM_DEBUG_TX|WM_DEBUG_RX|WM_DEBUG_LINK; |
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94 | |
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95 | #define DPRINTF(x, y) if (wm_debug & (x)) printk y |
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96 | #else |
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97 | #define DPRINTF(x, y) /* nothing */ |
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98 | #endif /* WM_DEBUG */ |
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99 | |
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100 | /* RTEMS event to kill the daemon */ |
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101 | #define KILL_EVENT RTEMS_EVENT_1 |
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102 | /* RTEMS event to (re)start the transmitter */ |
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103 | #define START_TRANSMIT_EVENT RTEMS_EVENT_2 |
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104 | /* RTEMS events used by the ISR */ |
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105 | #define RX_EVENT RTEMS_EVENT_3 |
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106 | #define TX_EVENT RTEMS_EVENT_4 |
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107 | #define ERR_EVENT RTEMS_EVENT_5 |
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108 | #define INIT_EVENT RTEMS_EVENT_6 |
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109 | |
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110 | #define ALL_EVENTS (KILL_EVENT|START_TRANSMIT_EVENT|RX_EVENT|TX_EVENT|ERR_EVENT|INIT_EVENT) |
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111 | |
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112 | |
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113 | #define NTXDESC 128 |
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114 | #define NTXDESC_MASK (NTXDESC - 1) |
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115 | #define WM_NEXTTX(x) (((x) + 1) & NTXDESC_MASK) |
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116 | |
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117 | #define NRXDESC 64 |
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118 | #define NRXDESC_MASK (NRXDESC - 1) |
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119 | #define WM_NEXTRX(x) (((x) + 1) & NRXDESC_MASK) |
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120 | #define WM_PREVRX(x) (((x) - 1) & NRXDESC_MASK) |
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121 | |
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122 | #define WM_CDOFF(x) offsetof(struct wm_control_data, x) |
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123 | #define WM_CDTXOFF(x) WM_CDOFF(sc_txdescs[(x)]) |
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124 | #define WM_CDRXOFF(x) WM_CDOFF(sc_rxdescs[(x)]) |
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125 | |
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126 | #define TXQ_HiLmt_OFF 64 |
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127 | |
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128 | static uint32_t TxDescCmd; |
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129 | |
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130 | /* |
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131 | * Software state per device. |
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132 | */ |
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133 | struct wm_softc { |
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134 | wiseman_txdesc_t sc_txdescs[NTXDESC]; /* transmit descriptor memory */ |
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135 | wiseman_rxdesc_t sc_rxdescs[NRXDESC]; /* receive descriptor memory */ |
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136 | struct mbuf *txs_mbuf[NTXDESC]; /* transmit buffer memory */ |
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137 | struct mbuf *rxs_mbuf[NRXDESC]; /* receive buffer memory */ |
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138 | struct wm_softc *next_module; |
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139 | volatile unsigned int intr_errsts[INTR_ERR_SIZE]; /* intr_status */ |
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140 | unsigned int intr_err_ptr1; /* ptr used in i82544EI_error() */ |
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141 | unsigned int intr_err_ptr2; /* ptr used in ISR */ |
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142 | int txs_firstdesc; /* first descriptor in packet */ |
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143 | int txs_lastdesc; /* last descriptor in packet */ |
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144 | int txs_ndesc; /* # of descriptors used */ |
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145 | unsigned sc_membase; /* Memory space base address */ |
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146 | unsigned sc_memsize; /* Memory space size */ |
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147 | |
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148 | char dv_xname[16]; /* external name (name + unit) */ |
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149 | void *sc_sdhook; /* shutdown hook */ |
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150 | struct arpcom arpcom; /* rtems if structure, contains ifnet */ |
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151 | int sc_flags; /* flags; see below */ |
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152 | int sc_bus_speed; /* PCI/PCIX bus speed */ |
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153 | int sc_flowflags; /* 802.3x flow control flags */ |
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154 | |
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155 | void *sc_ih; /* interrupt cookie */ |
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156 | |
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157 | int sc_ee_addrbits; /* EEPROM address bits */ |
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158 | rtems_id daemonTid; |
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159 | rtems_id daemonSync; /* synchronization with the daemon */ |
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160 | |
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161 | int txq_next; /* next Tx descriptor ready for transmitting */ |
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162 | uint32_t txq_nactive; /* number of active TX descriptors */ |
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163 | uint32_t txq_fi; /* next free Tx descriptor */ |
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164 | uint32_t txq_free; /* number of free Tx jobs */ |
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165 | uint32_t sc_txctx_ipcs; /* cached Tx IP cksum ctx */ |
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166 | uint32_t sc_txctx_tucs; /* cached Tx TCP/UDP cksum ctx */ |
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167 | |
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168 | int sc_rxptr; /* next ready Rx descriptor/queue ent */ |
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169 | int sc_rxdiscard; |
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170 | int sc_rxlen; |
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171 | uint32_t sc_ctrl; /* prototype CTRL register */ |
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172 | #if 0 |
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173 | uint32_t sc_ctrl_ext; /* prototype CTRL_EXT register */ |
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174 | #endif |
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175 | uint32_t sc_icr; /* prototype interrupt bits */ |
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176 | uint32_t sc_tctl; /* prototype TCTL register */ |
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177 | uint32_t sc_rctl; /* prototype RCTL register */ |
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178 | uint32_t sc_tipg; /* prototype TIPG register */ |
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179 | uint32_t sc_fcrtl; /* prototype FCRTL register */ |
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180 | |
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181 | int sc_mchash_type; /* multicast filter offset */ |
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182 | |
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183 | /* statistics */ |
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184 | struct { |
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185 | volatile unsigned long rxInterrupts; |
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186 | volatile unsigned long txInterrupts; |
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187 | unsigned long txMultiBuffPacket; |
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188 | unsigned long txMultiMaxLen; |
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189 | unsigned long txSinglMaxLen; |
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190 | unsigned long txMultiMaxLoop; |
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191 | unsigned long txBuffMaxLen; |
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192 | unsigned long linkInterrupts; |
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193 | unsigned long length_errors; |
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194 | unsigned long frame_errors; |
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195 | unsigned long crc_errors; |
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196 | unsigned long rxOvrRunInterrupts; /* Rx overrun interrupt */ |
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197 | unsigned long rxSeqErr; |
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198 | unsigned long rxC_ordered; |
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199 | unsigned long ghostInterrupts; |
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200 | unsigned long linkStatusChng; |
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201 | } stats; |
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202 | }; |
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203 | |
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204 | /* <skf> our memory address seen from the PCI bus should be 1:1 */ |
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205 | #define htole32(x) le32toh(x) |
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206 | #define le32toh(x) CPU_swap_u32((unsigned int) x) |
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207 | #define le16toh(x) CPU_swap_u16(x) |
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208 | |
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209 | /* sc_flags */ |
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210 | #define WM_F_HAS_MII 0x01 /* has MII */ |
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211 | /* 82544 EI does not perform EEPROM handshake, EEPROM interface is not SPI */ |
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212 | #define WM_F_EEPROM_HANDSHAKE 0x02 /* requires EEPROM handshake */ |
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213 | #define WM_F_EEPROM_SPI 0x04 /* EEPROM is SPI */ |
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214 | #define WM_F_IOH_VALID 0x10 /* I/O handle is valid */ |
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215 | #define WM_F_BUS64 0x20 /* bus is 64-bit */ |
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216 | #define WM_F_PCIX 0x40 /* bus is PCI-X */ |
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217 | |
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218 | #define CSR_READ(sc,reg) in_le32((volatile unsigned *)(sc->sc_membase+reg)) |
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219 | #define CSR_WRITE(sc,reg,val) out_le32((volatile unsigned *)(sc->sc_membase+reg), val) |
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220 | |
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221 | #define WM_CDTXADDR(sc) ( (uint32_t) &sc->sc_txdescs[0] ) |
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222 | #define WM_CDRXADDR(sc) ( (uint32_t) &sc->sc_rxdescs[0] ) |
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223 | |
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224 | static struct wm_softc *root_i82544EI_dev = NULL; |
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225 | |
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226 | static void i82544EI_ifstart(struct ifnet *ifp); |
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227 | static int wm_ioctl(struct ifnet *ifp, u_long cmd,uint32_t data); |
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228 | static void i82544EI_ifinit(void *arg); |
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229 | static void wm_stop(struct ifnet *ifp, int disable); |
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230 | |
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231 | static void wm_rxdrain(struct wm_softc *sc); |
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232 | static int wm_add_rxbuf(struct wm_softc *sc, int idx); |
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233 | static int wm_read_eeprom(struct wm_softc *sc,int word,int wordcnt, uint16_t *data); |
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234 | static void i82544EI_daemon(void *arg); |
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235 | static void wm_set_filter(struct wm_softc *sc); |
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236 | |
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237 | static void i82544EI_isr(void); |
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238 | static void i82544EI_sendpacket(struct wm_softc *sc, struct mbuf *m); |
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239 | extern int pci_mem_find(), pci_io_find(), pci_get_capability(void); |
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240 | extern char * ether_sprintf1(void); |
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241 | |
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242 | static void i82544EI_irq_on(const rtems_irq_connect_data *irq) |
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243 | { |
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244 | struct wm_softc *sc; |
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245 | unsigned int irqMask= ICR_TXDW | ICR_LSC | ICR_RXSEQ | ICR_RXDMT0 | ICR_RXO | ICR_RXT0 | ICR_RXCFG; |
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246 | |
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247 | for (sc= root_i82544EI_dev; sc; sc= sc-> next_module) { |
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248 | CSR_WRITE(sc,WMREG_IMS,(CSR_READ(sc,WMREG_IMS)| irqMask) ); |
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249 | return; |
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250 | } |
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251 | } |
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252 | |
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253 | static void i82544EI_irq_off(const rtems_irq_connect_data *irq) |
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254 | { |
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255 | struct wm_softc *sc; |
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256 | unsigned int irqMask= ICR_TXDW | ICR_LSC | ICR_RXSEQ | ICR_RXDMT0 | ICR_RXO | ICR_RXT0 |ICR_RXCFG ; |
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257 | |
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258 | for (sc= root_i82544EI_dev; sc; sc= sc-> next_module) { |
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259 | CSR_WRITE(sc,WMREG_IMS, (CSR_READ(sc,WMREG_IMS) & ~irqMask) ); |
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260 | return; |
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261 | } |
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262 | } |
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263 | |
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264 | static int i82544EI_irq_is_on(const rtems_irq_connect_data *irq) |
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265 | { |
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266 | return(CSR_READ(root_i82544EI_dev,WMREG_ICR) & root_i82544EI_dev->sc_icr); |
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267 | } |
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268 | |
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269 | static rtems_irq_connect_data i82544IrqData={ |
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270 | BSP_GPP_82544_IRQ, |
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271 | (rtems_irq_hdl) i82544EI_isr, |
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272 | (rtems_irq_enable) i82544EI_irq_on, |
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273 | (rtems_irq_disable) i82544EI_irq_off, |
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274 | (rtems_irq_is_enabled) i82544EI_irq_is_on, |
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275 | }; |
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276 | |
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277 | int rtems_i82544EI_driver_attach(struct rtems_bsdnet_ifconfig *config, int attach) |
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278 | { |
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279 | struct wm_softc *sc; |
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280 | struct ifnet *ifp; |
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281 | uint8_t enaddr[ETHER_ADDR_LEN]; |
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282 | uint16_t myea[ETHER_ADDR_LEN / 2], cfg1, cfg2, swdpin; |
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283 | unsigned reg; |
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284 | int b,d,f; /* PCI bus/device/function */ |
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285 | int unit; |
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286 | void *softc_mem; |
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287 | char *name; |
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288 | |
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289 | unit = rtems_bsdnet_parse_driver_name(config, &name); |
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290 | if (unit < 0) return 0; |
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291 | |
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292 | printk("\nEthernet driver name %s unit %d \n",name, unit); |
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293 | printk("Copyright (c) 2004,2005 S. Kate Feng <feng1@bnl.gov> (RTEMS/mvme5500 port)\n"); |
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294 | |
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295 | /* Make sure certain elements e.g. descriptor lists are aligned.*/ |
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296 | softc_mem = rtems_bsdnet_malloc(sizeof(*sc) + SOFTC_ALIGN, M_FREE, M_NOWAIT); |
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297 | |
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298 | /* Check for the very unlikely case of no memory. */ |
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299 | if (softc_mem == NULL) |
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300 | rtems_panic("i82544EI: OUT OF MEMORY"); |
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301 | |
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302 | sc = (void *)(((long)softc_mem + SOFTC_ALIGN) & ~SOFTC_ALIGN); |
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303 | memset(sc, 0, sizeof(*sc)); |
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304 | |
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305 | sprintf(sc->dv_xname, "%s%d", name, unit); |
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306 | |
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307 | if (pci_find_device(PCI_VENDOR_ID_INTEL,PCI_DEVICE_INTEL_82544EI_COPPER, |
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308 | unit-1,&b, &d, &f)) |
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309 | rtems_panic("i82544EI device ID not found\n"); |
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310 | |
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311 | #if WM_DEBUG |
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312 | printk("82544EI:b%d, d%d, f%d\n", b, d,f); |
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313 | #endif |
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314 | |
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315 | /* Memory-mapped acccess is required for normal operation.*/ |
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316 | if ( pci_mem_find(b,d,f,PCI_MAPREG_START, &sc->sc_membase, &sc->sc_memsize)) |
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317 | rtems_panic("i82544EI: unable to map memory space\n"); |
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318 | |
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319 | #ifdef WM_DEBUG |
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320 | printk("Memory base addr 0x%x\n", sc->sc_membase); |
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321 | printk("txdesc[0] addr:0x%x, rxdesc[0] addr:0x%x, sizeof sc %d\n",&sc->sc_txdescs[0], &sc->sc_rxdescs[0], sizeof(*sc)); |
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322 | #endif |
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323 | |
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324 | |
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325 | sc->sc_ctrl |=CSR_READ(sc,WMREG_CTRL); |
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326 | /* |
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327 | * Determine a few things about the bus we're connected to. |
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328 | */ |
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329 | reg = CSR_READ(sc,WMREG_STATUS); |
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330 | if (reg & STATUS_BUS64) sc->sc_flags |= WM_F_BUS64; |
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331 | sc->sc_bus_speed = (reg & STATUS_PCI66) ? 66 : 33; |
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332 | #ifdef WM_DEBUG |
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333 | printk("%s%d: %d-bit %dMHz PCI bus\n",name, unit, |
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334 | (sc->sc_flags & WM_F_BUS64) ? 64 : 32, sc->sc_bus_speed); |
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335 | #endif |
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336 | |
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337 | /* |
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338 | * Setup some information about the EEPROM. |
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339 | */ |
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340 | |
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341 | sc->sc_ee_addrbits = 6; |
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342 | |
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343 | #ifdef WM_DEBUG |
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344 | printk("%s%d: %u word (%d address bits) MicroWire EEPROM\n", |
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345 | name, unit, 1U << sc->sc_ee_addrbits, |
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346 | sc->sc_ee_addrbits); |
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347 | #endif |
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348 | |
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349 | /* |
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350 | * Read the Ethernet address from the EEPROM. |
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351 | */ |
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352 | if (wm_read_eeprom(sc, EEPROM_OFF_MACADDR, |
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353 | sizeof(myea) / sizeof(myea[0]), myea)) |
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354 | rtems_panic("i82544ei 1GHZ ethernet: unable to read Ethernet address"); |
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355 | |
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356 | enaddr[0] = myea[0] & 0xff; |
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357 | enaddr[1] = myea[0] >> 8; |
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358 | enaddr[2] = myea[1] & 0xff; |
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359 | enaddr[3] = myea[1] >> 8; |
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360 | enaddr[4] = myea[2] & 0xff; |
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361 | enaddr[5] = myea[2] >> 8; |
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362 | |
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363 | |
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364 | memcpy(sc->arpcom.ac_enaddr, enaddr, ETHER_ADDR_LEN); |
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365 | #ifdef WM_DEBUG |
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366 | printk("%s: Ethernet address %s\n", sc->dv_xname, |
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367 | ether_sprintf1(enaddr)); |
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368 | #endif |
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369 | |
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370 | /* |
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371 | * Read the config info from the EEPROM, and set up various |
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372 | * bits in the control registers based on their contents. |
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373 | */ |
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374 | if (wm_read_eeprom(sc, EEPROM_OFF_CFG1, 1, &cfg1)) { |
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375 | printk("%s: unable to read CFG1 from EEPROM\n",sc->dv_xname); |
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376 | return(0); |
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377 | } |
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378 | if (wm_read_eeprom(sc, EEPROM_OFF_CFG2, 1, &cfg2)) { |
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379 | printk("%s: unable to read CFG2 from EEPROM\n",sc->dv_xname); |
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380 | return(0); |
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381 | } |
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382 | if (wm_read_eeprom(sc, EEPROM_OFF_SWDPIN, 1, &swdpin)) { |
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383 | printk("%s: unable to read SWDPIN from EEPROM\n",sc->dv_xname); |
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384 | return(0); |
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385 | } |
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386 | |
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387 | if (cfg1 & EEPROM_CFG1_ILOS) sc->sc_ctrl |= CTRL_ILOS; |
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388 | sc->sc_ctrl|=((swdpin >> EEPROM_SWDPIN_SWDPIO_SHIFT) & 0xf) << |
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389 | CTRL_SWDPIO_SHIFT; |
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390 | sc->sc_ctrl |= ((swdpin >> EEPROM_SWDPIN_SWDPIN_SHIFT) & 0xf) << |
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391 | CTRL_SWDPINS_SHIFT; |
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392 | |
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393 | CSR_WRITE(sc,WMREG_CTRL, sc->sc_ctrl); |
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394 | #if 0 |
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395 | CSR_WRITE(sc,WMREG_CTRL_EXT, sc->sc_ctrl_ext); |
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396 | #endif |
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397 | |
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398 | ifp = &sc->arpcom.ac_if; |
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399 | /* set this interface's name and unit */ |
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400 | ifp->if_unit = unit; |
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401 | ifp->if_name = name; |
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402 | ifp->if_softc = sc; |
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403 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
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404 | ifp->if_mtu = config->mtu ? config->mtu : ETHERMTU; |
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405 | ifp->if_ioctl = wm_ioctl; |
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406 | ifp->if_start = i82544EI_ifstart; |
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407 | /* ifp->if_watchdog = wm_watchdog;*/ |
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408 | ifp->if_init = i82544EI_ifinit; |
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409 | if (ifp->if_snd.ifq_maxlen == 0) |
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410 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
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411 | |
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412 | ifp->if_output = ether_output; |
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413 | |
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414 | /* create the synchronization semaphore */ |
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415 | if (RTEMS_SUCCESSFUL != rtems_semaphore_create( |
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416 | rtems_build_name('I','G','H','Z'),0,0,0,&sc->daemonSync)) |
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417 | rtems_panic("i82544EI: semaphore creation failed"); |
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418 | |
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419 | sc->next_module = root_i82544EI_dev; |
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420 | root_i82544EI_dev = sc; |
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421 | |
---|
422 | /* Attach the interface. */ |
---|
423 | if_attach(ifp); |
---|
424 | ether_ifattach(ifp); |
---|
425 | #ifdef WM_DEBUG |
---|
426 | printk("82544EI: Ethernet driver has been attached (handle 0x%08x,ifp 0x%08x)\n",sc, ifp); |
---|
427 | #endif |
---|
428 | |
---|
429 | return(1); |
---|
430 | } |
---|
431 | |
---|
432 | /* |
---|
433 | * i82544EI_ifstart: [ifnet interface function] |
---|
434 | * |
---|
435 | * Start packet transmission on the interface. |
---|
436 | */ |
---|
437 | static void |
---|
438 | i82544EI_ifstart(struct ifnet *ifp) |
---|
439 | { |
---|
440 | struct wm_softc *sc = ifp->if_softc; |
---|
441 | |
---|
442 | #ifdef WM_DEBUG |
---|
443 | printk("i82544EI_ifstart("); |
---|
444 | #endif |
---|
445 | |
---|
446 | if ((ifp->if_flags & IFF_RUNNING) == 0) { |
---|
447 | #ifdef WM_DEBUG |
---|
448 | printk("IFF_RUNNING==0\n"); |
---|
449 | #endif |
---|
450 | return; |
---|
451 | } |
---|
452 | |
---|
453 | ifp->if_flags |= IFF_OACTIVE; |
---|
454 | rtems_event_send (sc->daemonTid, START_TRANSMIT_EVENT); |
---|
455 | #ifdef WM_DEBUG |
---|
456 | printk(")\n"); |
---|
457 | #endif |
---|
458 | } |
---|
459 | |
---|
460 | static void i82544EI_stats(struct wm_softc *sc) |
---|
461 | { |
---|
462 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
463 | |
---|
464 | printf(" Rx Interrupts:%-8u\n", sc->stats.rxInterrupts); |
---|
465 | printf(" Receive Packets:%-8u\n", CSR_READ(sc,WMREG_GPRC)); |
---|
466 | printf(" Receive Overrun:%-8u\n", sc->stats.rxOvrRunInterrupts); |
---|
467 | printf(" Receive errors:%-8u\n", CSR_READ(sc,WMREG_RXERRC)); |
---|
468 | printf(" Rx sequence error:%-8u\n", sc->stats.rxSeqErr); |
---|
469 | printf(" Rx /C/ ordered:%-8u\n", sc->stats.rxC_ordered); |
---|
470 | printf(" Rx Length Errors:%-8u\n", CSR_READ(sc,WMREG_RLEC)); |
---|
471 | printf(" Tx Interrupts:%-8u\n", sc->stats.txInterrupts); |
---|
472 | #if 0 |
---|
473 | printf("Multi-BuffTx Packets:%-8u\n", sc->stats.txMultiBuffPacket); |
---|
474 | printf("Multi-BuffTx max len:%-8u\n", sc->stats.txMultiMaxLen); |
---|
475 | printf("SingleBuffTx max len:%-8u\n", sc->stats.txSinglMaxLen); |
---|
476 | printf("Multi-BuffTx maxloop:%-8u\n", sc->stats.txMultiMaxLoop); |
---|
477 | printf("Tx buffer max len :%-8u\n", sc->stats.txBuffMaxLen); |
---|
478 | #endif |
---|
479 | printf(" Transmitt Packets:%-8u\n", CSR_READ(sc,WMREG_GPTC)); |
---|
480 | printf(" Transmitt errors:%-8u\n", ifp->if_oerrors); |
---|
481 | printf(" Active Txqs:%-8u\n", sc->txq_nactive); |
---|
482 | printf(" collisions:%-8u\n", CSR_READ(sc,WMREG_COLC)); |
---|
483 | printf(" Crc Errors:%-8u\n", CSR_READ(sc,WMREG_CRCERRS)); |
---|
484 | printf(" Link Status Change:%-8u\n", sc->stats.linkStatusChng); |
---|
485 | } |
---|
486 | |
---|
487 | /* |
---|
488 | * wm_ioctl: [ifnet interface function] |
---|
489 | * |
---|
490 | * Handle control requests from the operator. |
---|
491 | */ |
---|
492 | static int wm_ioctl(struct ifnet *ifp, u_long cmd,uint32_t data) |
---|
493 | { |
---|
494 | struct wm_softc *sc = ifp->if_softc; |
---|
495 | int error=0; |
---|
496 | |
---|
497 | switch (cmd) { |
---|
498 | default: |
---|
499 | error = ether_ioctl(ifp, cmd, data); |
---|
500 | if (error == ENETRESET) { |
---|
501 | /* |
---|
502 | * Multicast list has changed; set the hardware filter |
---|
503 | * accordingly. |
---|
504 | */ |
---|
505 | wm_set_filter(sc); |
---|
506 | error = 0; |
---|
507 | } |
---|
508 | break; |
---|
509 | case SIO_RTEMS_SHOW_STATS: |
---|
510 | i82544EI_stats(sc); |
---|
511 | break; |
---|
512 | } |
---|
513 | |
---|
514 | /* Try to get more packets going.*/ |
---|
515 | i82544EI_ifstart(ifp); |
---|
516 | return (error); |
---|
517 | } |
---|
518 | |
---|
519 | /* |
---|
520 | * wm_isr: |
---|
521 | * |
---|
522 | * Interrupt service routine. |
---|
523 | */ |
---|
524 | static void i82544EI_isr() |
---|
525 | { |
---|
526 | volatile struct wm_softc *sc = root_i82544EI_dev; |
---|
527 | uint32_t icr; |
---|
528 | rtems_event_set events=0; |
---|
529 | |
---|
530 | /* Reading the WMREG_ICR clears the interrupt bits */ |
---|
531 | icr = CSR_READ(sc,WMREG_ICR); |
---|
532 | |
---|
533 | if ( icr & (ICR_RXDMT0|ICR_RXT0)) { |
---|
534 | sc->stats.rxInterrupts++; |
---|
535 | events |= RX_EVENT; |
---|
536 | } |
---|
537 | |
---|
538 | if (icr & ICR_TXDW) { |
---|
539 | sc->stats.txInterrupts++; |
---|
540 | events |= TX_EVENT; |
---|
541 | } |
---|
542 | /* <SKF> Rx overrun : no available receive buffer |
---|
543 | * or PCI receive bandwidth inadequate. |
---|
544 | */ |
---|
545 | if (icr & ICR_RXO) { |
---|
546 | sc->stats.rxOvrRunInterrupts++; |
---|
547 | events |= INIT_EVENT; |
---|
548 | } |
---|
549 | if (icr & ICR_RXSEQ) /* framing error */ { |
---|
550 | sc->intr_errsts[sc->intr_err_ptr2++]=icr; |
---|
551 | sc->intr_err_ptr2 %=INTR_ERR_SIZE; /* Till Straumann */ |
---|
552 | events |= ERR_EVENT; |
---|
553 | sc->stats.rxSeqErr++; |
---|
554 | } |
---|
555 | if ( !icr) sc->stats.ghostInterrupts++; |
---|
556 | |
---|
557 | if (icr & ICR_LSC) sc->stats.linkStatusChng++; |
---|
558 | if (icr & ICR_RXCFG) sc->stats.rxC_ordered++; |
---|
559 | |
---|
560 | rtems_event_send(sc->daemonTid, events); |
---|
561 | } |
---|
562 | |
---|
563 | /* |
---|
564 | * i82544EI_sendpacket: |
---|
565 | * |
---|
566 | * Helper; handle transmit interrupts. |
---|
567 | */ |
---|
568 | static void i82544EI_sendpacket(struct wm_softc *sc, struct mbuf *m) |
---|
569 | { |
---|
570 | |
---|
571 | #ifdef WM_DEBUG_TX |
---|
572 | printk("sendpacket("); |
---|
573 | #endif |
---|
574 | |
---|
575 | if ( !(m->m_next)) { /* single buffer packet */ |
---|
576 | sc->txs_mbuf[sc->txq_next]= m; |
---|
577 | /* Note: we currently only use 32-bit DMA addresses. */ |
---|
578 | sc->sc_txdescs[sc->txq_next].wtx_addr.wa_low = htole32(mtod(m, void*)); |
---|
579 | sc->sc_txdescs[sc->txq_next].wtx_cmdlen =htole32(TxDescCmd | m->m_len); |
---|
580 | sc->txs_lastdesc= sc->txq_next; |
---|
581 | sc->txq_next = WM_NEXTTX(sc->txq_next); |
---|
582 | sc->txq_nactive++; |
---|
583 | sc->txq_free--; |
---|
584 | } |
---|
585 | else /* multiple mbufs in this packet */ |
---|
586 | { |
---|
587 | struct mbuf *mtp, *mdest; |
---|
588 | volatile unsigned char *pt; |
---|
589 | int len, y, loop=0; |
---|
590 | |
---|
591 | #ifdef WM_DEBUG_TX |
---|
592 | printk("multi mbufs "); |
---|
593 | #endif |
---|
594 | mtp = m; |
---|
595 | while ( mtp) { |
---|
596 | MGETHDR(mdest, M_WAIT, MT_DATA); |
---|
597 | MCLGET(mdest, M_WAIT); |
---|
598 | pt = (volatile unsigned char *)mdest->m_data; |
---|
599 | for ( len=0;mtp;mtp=mtp->m_next) { |
---|
600 | loop++; |
---|
601 | /* Each descriptor gets a 2k (MCLBYTES) buffer, although |
---|
602 | * the length of each descriptor can be up to 16288 bytes. |
---|
603 | * For packets which fill more than one buffer ( >2k), we |
---|
604 | * chain them together. |
---|
605 | * <Kate Feng> : This effective for packets > 2K |
---|
606 | * The other way is effective for packets < 2K |
---|
607 | */ |
---|
608 | if ( ((y=(len+mtp->m_len)) > sizeof(union mcluster))) { |
---|
609 | printk(">2048, use next descriptor\n"); |
---|
610 | break; |
---|
611 | } |
---|
612 | memcpy((void *)pt,(char *)mtp->m_data, mtp->m_len); |
---|
613 | pt += mtp->m_len; |
---|
614 | len += mtp->m_len; |
---|
615 | #if 0 |
---|
616 | sc->stats.txSinglMaxLen= MAX(mtp->m_len, sc->stats.txSinglMaxLen); |
---|
617 | #endif |
---|
618 | } /* end for loop */ |
---|
619 | mdest->m_len=len; |
---|
620 | sc->txs_mbuf[sc->txq_next] = mdest; |
---|
621 | /* Note: we currently only use 32-bit DMA addresses. */ |
---|
622 | sc->sc_txdescs[sc->txq_next].wtx_addr.wa_low = htole32(mtod(mdest, void*)); |
---|
623 | sc->sc_txdescs[sc->txq_next].wtx_cmdlen = htole32(TxDescCmd|mdest->m_len); |
---|
624 | sc->txs_lastdesc = sc->txq_next; |
---|
625 | sc->txq_next = WM_NEXTTX(sc->txq_next); |
---|
626 | sc->txq_nactive ++; |
---|
627 | if (sc->txq_free) |
---|
628 | sc->txq_free--; |
---|
629 | else |
---|
630 | rtems_panic("i8254EI : no more free descriptors"); |
---|
631 | #if 0 |
---|
632 | sc->stats.txMultiMaxLen= MAX(mdest->m_len, sc->stats.txMultiMaxLen); |
---|
633 | sc->stats.txMultiBuffPacket++; |
---|
634 | #endif |
---|
635 | } /* end for while */ |
---|
636 | /* free old mbuf chain */ |
---|
637 | #if 0 |
---|
638 | sc->stats.txMultiMaxLoop=MAX(loop, sc->stats.txMultiMaxLoop); |
---|
639 | #endif |
---|
640 | m_freem(m); |
---|
641 | m=0; |
---|
642 | } /* end multiple mbufs */ |
---|
643 | |
---|
644 | DPRINTF(WM_DEBUG_TX,("%s: TX: desc %d: cmdlen 0x%08x\n", sc->dv_xname, |
---|
645 | sc->txs_lastdesc, le32toh(sc->sc_txdescs[sc->txs_lastdesc].wtx_cmdlen))); |
---|
646 | DPRINTF(WM_DEBUG_TX,("status 0x%08x\n",sc->sc_txdescs[sc->txq_fi].wtx_fields.wtxu_status)); |
---|
647 | |
---|
648 | memBar(); |
---|
649 | |
---|
650 | /* This is the location where software writes the first NEW descriptor */ |
---|
651 | CSR_WRITE(sc,WMREG_TDT, sc->txq_next); |
---|
652 | |
---|
653 | DPRINTF(WM_DEBUG_TX,("%s: addr 0x%08x, TX: TDH %d, TDT %d\n",sc->dv_xname, |
---|
654 | le32toh(sc->sc_txdescs[sc->txs_lastdesc].wtx_addr.wa_low), CSR_READ(sc,WMREG_TDH), |
---|
655 | CSR_READ(sc,WMREG_TDT))); |
---|
656 | |
---|
657 | DPRINTF(WM_DEBUG_TX,("%s: TX: finished transmitting packet, job %d\n", |
---|
658 | sc->dv_xname, sc->txq_next)); |
---|
659 | |
---|
660 | } |
---|
661 | |
---|
662 | static void i82544EI_txq_free(struct wm_softc *sc, uint8_t status) |
---|
663 | { |
---|
664 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
665 | |
---|
666 | /* We might use the statistics registers instead of variables |
---|
667 | * to keep tack of the network statistics |
---|
668 | */ |
---|
669 | |
---|
670 | /* statistics */ |
---|
671 | ifp->if_opackets++; |
---|
672 | |
---|
673 | if (status & (WTX_ST_EC|WTX_ST_LC)) { |
---|
674 | ifp->if_oerrors++; |
---|
675 | |
---|
676 | if (status & WTX_ST_LC) |
---|
677 | printf("%s: late collision\n", sc->dv_xname); |
---|
678 | else if (status & WTX_ST_EC) { |
---|
679 | ifp->if_collisions += 16; |
---|
680 | printf("%s: excessive collisions\n", sc->dv_xname); |
---|
681 | } |
---|
682 | } |
---|
683 | /* Free the original mbuf chain */ |
---|
684 | m_freem(sc->txs_mbuf[sc->txq_fi]); |
---|
685 | sc->txs_mbuf[sc->txq_fi] = 0; |
---|
686 | sc->sc_txdescs[sc->txq_fi].wtx_fields.wtxu_status=0; |
---|
687 | |
---|
688 | sc->txq_free ++; |
---|
689 | sc->txq_fi = WM_NEXTTX(sc->txq_fi); |
---|
690 | --sc->txq_nactive; |
---|
691 | } |
---|
692 | |
---|
693 | static void i82544EI_txq_done(struct wm_softc *sc) |
---|
694 | { |
---|
695 | uint8_t status; |
---|
696 | |
---|
697 | /* |
---|
698 | * Go through the Tx list and free mbufs for those |
---|
699 | * frames which have been transmitted. |
---|
700 | */ |
---|
701 | while ( sc->txq_nactive > 0) { |
---|
702 | status = sc->sc_txdescs[sc->txq_fi].wtx_fields.wtxu_status; |
---|
703 | if ((status & WTX_ST_DD) == 0) break; |
---|
704 | i82544EI_txq_free(sc, status); |
---|
705 | DPRINTF(WM_DEBUG_TX,("%s: TX: job %d done\n", |
---|
706 | sc->dv_xname, sc->txq_fi)); |
---|
707 | } |
---|
708 | } |
---|
709 | |
---|
710 | static void wm_init_rxdesc(struct wm_softc *sc, int x) |
---|
711 | { |
---|
712 | wiseman_rxdesc_t *__rxd = &(sc)->sc_rxdescs[(x)]; |
---|
713 | struct mbuf *m; |
---|
714 | |
---|
715 | m = sc->rxs_mbuf[x]; |
---|
716 | |
---|
717 | __rxd->wrx_addr.wa_low=htole32(mtod(m, void*)); |
---|
718 | __rxd->wrx_addr.wa_high = 0; |
---|
719 | __rxd->wrx_len = 0; |
---|
720 | __rxd->wrx_cksum = 0; |
---|
721 | __rxd->wrx_status = 0; |
---|
722 | __rxd->wrx_errors = 0; |
---|
723 | __rxd->wrx_special = 0; |
---|
724 | /* Receive Descriptor Tail: add Rx desc. to H/W free list */ |
---|
725 | CSR_WRITE(sc,WMREG_RDT, (x)); |
---|
726 | } |
---|
727 | |
---|
728 | static void i82544EI_rx(struct wm_softc *sc) |
---|
729 | { |
---|
730 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
731 | struct mbuf *m; |
---|
732 | int i, len; |
---|
733 | uint8_t status, errors; |
---|
734 | struct ether_header *eh; |
---|
735 | |
---|
736 | #ifdef WM_DEBUG |
---|
737 | printk("i82544EI_rx()\n"); |
---|
738 | #endif |
---|
739 | |
---|
740 | for (i = sc->sc_rxptr;; i = WM_NEXTRX(i)) { |
---|
741 | DPRINTF(WM_DEBUG_RX, ("%s: RX: checking descriptor %d\n", |
---|
742 | sc->dv_xname, i)); |
---|
743 | |
---|
744 | status = sc->sc_rxdescs[i].wrx_status; |
---|
745 | errors = sc->sc_rxdescs[i].wrx_errors; |
---|
746 | len = le16toh(sc->sc_rxdescs[i].wrx_len); |
---|
747 | m = sc->rxs_mbuf[i]; |
---|
748 | |
---|
749 | if ((status & WRX_ST_DD) == 0) break; /* descriptor not done */ |
---|
750 | |
---|
751 | if (sc->sc_rxdiscard) { |
---|
752 | printk("RX: discarding contents of descriptor %d\n", i); |
---|
753 | wm_init_rxdesc(sc, i); |
---|
754 | if (status & WRX_ST_EOP) { |
---|
755 | /* Reset our state. */ |
---|
756 | printk("RX: resetting rxdiscard -> 0\n"); |
---|
757 | sc->sc_rxdiscard = 0; |
---|
758 | } |
---|
759 | continue; |
---|
760 | } |
---|
761 | |
---|
762 | /* |
---|
763 | * If an error occurred, update stats and drop the packet. |
---|
764 | */ |
---|
765 | if (errors &(WRX_ER_CE|WRX_ER_SE|WRX_ER_SEQ|WRX_ER_CXE|WRX_ER_RXE)) { |
---|
766 | ifp->if_ierrors++; |
---|
767 | if (errors & WRX_ER_SE) |
---|
768 | printk("%s: symbol error\n",sc->dv_xname); |
---|
769 | else if (errors & WRX_ER_SEQ) |
---|
770 | printk("%s: receive sequence error\n",sc->dv_xname); |
---|
771 | else if (errors & WRX_ER_CE) |
---|
772 | printk("%s: CRC error\n",sc->dv_xname); |
---|
773 | m_freem(m); |
---|
774 | goto give_it_back; |
---|
775 | } |
---|
776 | |
---|
777 | /* |
---|
778 | * No errors. Receive the packet. |
---|
779 | * |
---|
780 | * Note, we have configured the chip to include the |
---|
781 | * CRC with every packet. |
---|
782 | */ |
---|
783 | m->m_len = m->m_pkthdr.len = len - sizeof(struct ether_header); |
---|
784 | |
---|
785 | DPRINTF(WM_DEBUG_RX,("%s: RX: buffer at %p len %d\n", |
---|
786 | sc->dv_xname, m->m_data, len)); |
---|
787 | |
---|
788 | |
---|
789 | eh = mtod (m, struct ether_header *); |
---|
790 | m->m_data += sizeof(struct ether_header); |
---|
791 | ether_input (ifp, eh, m); |
---|
792 | /* Pass it on. */ |
---|
793 | ifp->if_ipackets++; |
---|
794 | |
---|
795 | give_it_back: |
---|
796 | /* Add a new receive buffer to the ring.*/ |
---|
797 | if (wm_add_rxbuf(sc, i) != 0) { |
---|
798 | /* |
---|
799 | * Failed, throw away what we've done so |
---|
800 | * far, and discard the rest of the packet. |
---|
801 | */ |
---|
802 | printk("Failed in wm_add_rxbuf(), drop packet\n"); |
---|
803 | ifp->if_ierrors++; |
---|
804 | wm_init_rxdesc(sc, i); |
---|
805 | if ((status & WRX_ST_EOP) == 0) |
---|
806 | sc->sc_rxdiscard = 1; |
---|
807 | m_freem(m); |
---|
808 | } |
---|
809 | } /* end for */ |
---|
810 | |
---|
811 | /* Update the receive pointer. */ |
---|
812 | sc->sc_rxptr = i; |
---|
813 | DPRINTF(WM_DEBUG_RX, ("%s: RX: rxptr -> %d\n", sc->dv_xname, i)); |
---|
814 | } |
---|
815 | |
---|
816 | static int i82544EI_init_hw(struct wm_softc *sc) |
---|
817 | { |
---|
818 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
819 | int i,error; |
---|
820 | uint8_t cksumfields; |
---|
821 | |
---|
822 | /* Cancel any pending I/O. */ |
---|
823 | wm_stop(ifp, 0); |
---|
824 | |
---|
825 | /* Initialize the error buffer ring */ |
---|
826 | sc->intr_err_ptr1=0; |
---|
827 | sc->intr_err_ptr2=0; |
---|
828 | for (i=0; i< INTR_ERR_SIZE; i++) sc->intr_errsts[i]=0; |
---|
829 | |
---|
830 | /* Initialize the transmit descriptor ring. */ |
---|
831 | memset(sc->sc_txdescs, 0, sizeof(sc->sc_txdescs)); |
---|
832 | sc->txq_free = NTXDESC; |
---|
833 | sc->txq_next = 0; |
---|
834 | sc->txs_lastdesc = 0; |
---|
835 | sc->txq_next = 0; |
---|
836 | sc->txq_free = NTXDESC; |
---|
837 | sc->txq_nactive = 0; |
---|
838 | |
---|
839 | sc->sc_txctx_ipcs = 0xffffffff; |
---|
840 | sc->sc_txctx_tucs = 0xffffffff; |
---|
841 | |
---|
842 | CSR_WRITE(sc,WMREG_TBDAH, 0); |
---|
843 | CSR_WRITE(sc,WMREG_TBDAL, WM_CDTXADDR(sc)); |
---|
844 | #ifdef WM_DEBUG |
---|
845 | printk("TBDAL 0x%x, TDLEN %d\n", WM_CDTXADDR(sc), sizeof(sc->sc_txdescs)); |
---|
846 | #endif |
---|
847 | CSR_WRITE(sc,WMREG_TDLEN, sizeof(sc->sc_txdescs)); |
---|
848 | CSR_WRITE(sc,WMREG_TDH, 0); |
---|
849 | CSR_WRITE(sc,WMREG_TDT, 0); |
---|
850 | CSR_WRITE(sc,WMREG_TIDV, 64 ); |
---|
851 | CSR_WRITE(sc,WMREG_TADV, 128); |
---|
852 | |
---|
853 | CSR_WRITE(sc,WMREG_TXDCTL, TXDCTL_PTHRESH(0) | |
---|
854 | TXDCTL_HTHRESH(0) | TXDCTL_WTHRESH(0)); |
---|
855 | CSR_WRITE(sc,WMREG_RXDCTL, RXDCTL_PTHRESH(0) | |
---|
856 | RXDCTL_HTHRESH(0) | RXDCTL_WTHRESH(1) | RXDCTL_GRAN ); |
---|
857 | |
---|
858 | CSR_WRITE(sc,WMREG_TQSA_LO, 0); |
---|
859 | CSR_WRITE(sc,WMREG_TQSA_HI, 0); |
---|
860 | |
---|
861 | /* |
---|
862 | * Set up checksum offload parameters for |
---|
863 | * this packet. |
---|
864 | */ |
---|
865 | #ifdef CKSUM_OFFLOAD |
---|
866 | if (m0->m_pkthdr.csum_flags & |
---|
867 | (M_CSUM_IPv4|M_CSUM_TCPv4|M_CSUM_UDPv4)) { |
---|
868 | if (wm_tx_cksum(sc, txs, &TxDescCmd,&cksumfields) != 0) { |
---|
869 | /* Error message already displayed. */ |
---|
870 | continue; |
---|
871 | } |
---|
872 | } else { |
---|
873 | #endif |
---|
874 | TxDescCmd = 0; |
---|
875 | cksumfields = 0; |
---|
876 | #ifdef CKSUM_OFFLOAD |
---|
877 | } |
---|
878 | #endif |
---|
879 | |
---|
880 | TxDescCmd |= WTX_CMD_EOP|WTX_CMD_IFCS|WTX_CMD_RS; |
---|
881 | |
---|
882 | /* Initialize the transmit job descriptors. */ |
---|
883 | for (i = 0; i < NTXDESC; i++) { |
---|
884 | sc->txs_mbuf[i] = 0; |
---|
885 | sc->sc_txdescs[i].wtx_fields.wtxu_options=cksumfields; |
---|
886 | sc->sc_txdescs[i].wtx_addr.wa_high = 0; |
---|
887 | sc->sc_txdescs[i].wtx_addr.wa_low = 0; |
---|
888 | sc->sc_txdescs[i].wtx_cmdlen = htole32(TxDescCmd); |
---|
889 | } |
---|
890 | |
---|
891 | /* |
---|
892 | * Initialize the receive descriptor and receive job |
---|
893 | * descriptor rings. |
---|
894 | */ |
---|
895 | memset(sc->sc_rxdescs, 0, sizeof(sc->sc_rxdescs)); |
---|
896 | CSR_WRITE(sc,WMREG_RDBAH, 0); |
---|
897 | CSR_WRITE(sc,WMREG_RDBAL, WM_CDRXADDR(sc)); |
---|
898 | CSR_WRITE(sc,WMREG_RDLEN, sizeof(sc->sc_rxdescs)); |
---|
899 | CSR_WRITE(sc,WMREG_RDH, 0); |
---|
900 | CSR_WRITE(sc,WMREG_RDT, 0); |
---|
901 | CSR_WRITE(sc,WMREG_RDTR, 0 |RDTR_FPD); |
---|
902 | CSR_WRITE(sc, WMREG_RADV, 256); |
---|
903 | |
---|
904 | for (i = 0; i < NRXDESC; i++) { |
---|
905 | if (sc->rxs_mbuf[i] == NULL) { |
---|
906 | if ((error = wm_add_rxbuf(sc, i)) != 0) { |
---|
907 | printk("%s%d: unable to allocate or map rx buffer" |
---|
908 | "%d, error = %d\n",ifp->if_name,ifp->if_unit, i, error); |
---|
909 | /* |
---|
910 | * XXX Should attempt to run with fewer receive |
---|
911 | * XXX buffers instead of just failing. |
---|
912 | */ |
---|
913 | wm_rxdrain(sc); |
---|
914 | return(error); |
---|
915 | } |
---|
916 | } else { |
---|
917 | printk("sc->rxs_mbuf[%d] not NULL.\n", i); |
---|
918 | wm_init_rxdesc(sc, i); |
---|
919 | } |
---|
920 | } |
---|
921 | sc->sc_rxptr = 0; |
---|
922 | sc->sc_rxdiscard = 0; |
---|
923 | |
---|
924 | /* |
---|
925 | * Clear out the VLAN table -- we don't use it (yet). |
---|
926 | */ |
---|
927 | CSR_WRITE(sc,WMREG_VET, 0); |
---|
928 | for (i = 0; i < WM_VLAN_TABSIZE; i++) |
---|
929 | CSR_WRITE(sc,WMREG_VFTA + (i << 2), 0); |
---|
930 | |
---|
931 | /* |
---|
932 | * Set up flow-control parameters. |
---|
933 | * |
---|
934 | * XXX Values could probably stand some tuning. |
---|
935 | */ |
---|
936 | CSR_WRITE(sc,WMREG_FCAL, FCAL_CONST);/*safe,even though MOTLOAD 0x00c28001 */ |
---|
937 | CSR_WRITE(sc,WMREG_FCAH, FCAH_CONST);/*safe,even though MOTLOAD 0x00000100 */ |
---|
938 | CSR_WRITE(sc,WMREG_FCT, ETHERTYPE_FLOWCONTROL);/*safe,even though MOTLoad 0x8808 */ |
---|
939 | |
---|
940 | |
---|
941 | /* safe,even though MOTLoad default all 0 */ |
---|
942 | sc->sc_fcrtl = FCRTL_DFLT; |
---|
943 | |
---|
944 | CSR_WRITE(sc,WMREG_FCRTH, FCRTH_DFLT); |
---|
945 | CSR_WRITE(sc,WMREG_FCRTL, sc->sc_fcrtl); |
---|
946 | CSR_WRITE(sc,WMREG_FCTTV, FCTTV_DFLT); |
---|
947 | |
---|
948 | sc->sc_ctrl &= ~CTRL_VME; |
---|
949 | /*sc->sc_ctrl |= CTRL_TFCE | CTRL_RFCE;*/ |
---|
950 | /* enable Big Endian Mode for the powerPC |
---|
951 | sc->sc_ctrl |= CTRL_BEM;*/ |
---|
952 | |
---|
953 | /* Write the control registers. */ |
---|
954 | CSR_WRITE(sc,WMREG_CTRL, sc->sc_ctrl); |
---|
955 | #if 0 |
---|
956 | CSR_WRITE(sc,WMREG_CTRL_EXT, sc->sc_ctrl_ext); |
---|
957 | #endif |
---|
958 | |
---|
959 | /* MOTLoad : WMREG_RXCSUM (0x5000)= 0, no Rx checksum offloading */ |
---|
960 | |
---|
961 | /* |
---|
962 | * Set up the interrupt registers. |
---|
963 | */ |
---|
964 | CSR_WRITE(sc,WMREG_IMC, 0xffffffffU); |
---|
965 | /* Reading the WMREG_ICR clears the interrupt bits */ |
---|
966 | CSR_READ(sc,WMREG_ICR); |
---|
967 | |
---|
968 | /* printf("WMREG_IMS 0x%x\n", CSR_READ(sc,WMREG_IMS));*/ |
---|
969 | |
---|
970 | sc->sc_icr = ICR_TXDW | ICR_LSC | ICR_RXSEQ | ICR_RXCFG | ICR_RXDMT0 | ICR_RXO | ICR_RXT0; |
---|
971 | |
---|
972 | CSR_WRITE(sc,WMREG_IMS, sc->sc_icr); |
---|
973 | |
---|
974 | /* Set up the inter-packet gap. */ |
---|
975 | CSR_WRITE(sc,WMREG_TIPG, sc->sc_tipg); |
---|
976 | |
---|
977 | #if 0 /* XXXJRT */ |
---|
978 | /* Set the VLAN ethernetype. */ |
---|
979 | CSR_WRITE(sc,WMREG_VET, ETHERTYPE_VLAN); |
---|
980 | #endif |
---|
981 | |
---|
982 | /* |
---|
983 | * Set up the transmit control register; we start out with |
---|
984 | * a collision distance suitable for FDX, but update it when |
---|
985 | * we resolve the media type. |
---|
986 | */ |
---|
987 | sc->sc_tctl = TCTL_EN | TCTL_PSP | TCTL_CT(TX_COLLISION_THRESHOLD) | |
---|
988 | TCTL_COLD(TX_COLLISION_DISTANCE_FDX) | TCTL_RTLC; /*transmitter enable*/ |
---|
989 | |
---|
990 | /* |
---|
991 | * Set up the receive control register; we actually program |
---|
992 | * the register when we set the receive filter. Use multicast |
---|
993 | * address offset type 0. |
---|
994 | * |
---|
995 | * Only the i82544 has the ability to strip the incoming |
---|
996 | * CRC, so we don't enable that feature. (TODO) |
---|
997 | */ |
---|
998 | sc->sc_mchash_type = 0; |
---|
999 | sc->sc_rctl = RCTL_EN | RCTL_LBM_NONE | RCTL_RDMTS_1_2 | RCTL_LPE | |
---|
1000 | RCTL_DPF | RCTL_MO(sc->sc_mchash_type); |
---|
1001 | |
---|
1002 | /* (MCLBYTES == 2048) */ |
---|
1003 | sc->sc_rctl |= RCTL_2k; |
---|
1004 | |
---|
1005 | #ifdef WM_DEBUG |
---|
1006 | printk("RDBAL 0x%x,RDLEN %d, RDT %d\n",CSR_READ(sc,WMREG_RDBAL),CSR_READ(sc,WMREG_RDLEN), CSR_READ(sc,WMREG_RDT)); |
---|
1007 | #endif |
---|
1008 | |
---|
1009 | /* Set the receive filter. */ |
---|
1010 | wm_set_filter(sc); |
---|
1011 | |
---|
1012 | CSR_WRITE(sc,WMREG_TCTL, sc->sc_tctl); |
---|
1013 | |
---|
1014 | /* Map and establish our interrupt. */ |
---|
1015 | if (!BSP_install_rtems_irq_handler(&i82544IrqData)) |
---|
1016 | rtems_panic("1GHZ ethernet: unable to install ISR"); |
---|
1017 | |
---|
1018 | return(0); |
---|
1019 | } |
---|
1020 | |
---|
1021 | /* |
---|
1022 | * i82544EI_ifinit: [ifnet interface function] |
---|
1023 | * |
---|
1024 | * Initialize the interface. |
---|
1025 | */ |
---|
1026 | static void i82544EI_ifinit(void *arg) |
---|
1027 | { |
---|
1028 | struct wm_softc *sc = (struct wm_softc*)arg; |
---|
1029 | |
---|
1030 | #ifdef WM_DEBUG |
---|
1031 | printk("i82544EI_ifinit(): daemon ID: 0x%08x)\n", sc->daemonTid); |
---|
1032 | #endif |
---|
1033 | if (sc->daemonTid) { |
---|
1034 | #ifdef WM_DEBUG |
---|
1035 | printk("i82544EI: daemon already up, doing nothing\n"); |
---|
1036 | #endif |
---|
1037 | return; |
---|
1038 | } |
---|
1039 | i82544EI_init_hw(sc); |
---|
1040 | |
---|
1041 | sc->daemonTid = rtems_bsdnet_newproc(i82544EI_TASK_NAME,4096,i82544EI_daemon,arg); |
---|
1042 | |
---|
1043 | /* ...all done! */ |
---|
1044 | sc->arpcom.ac_if.if_flags |= IFF_RUNNING; |
---|
1045 | |
---|
1046 | #ifdef WM_DEBUG |
---|
1047 | printk(")"); |
---|
1048 | #endif |
---|
1049 | } |
---|
1050 | |
---|
1051 | /* |
---|
1052 | * wm_txdrain: |
---|
1053 | * |
---|
1054 | * Drain the transmit queue. |
---|
1055 | */ |
---|
1056 | static void wm_txdrain(struct wm_softc *sc) |
---|
1057 | { |
---|
1058 | int i; |
---|
1059 | |
---|
1060 | /* Release any queued transmit buffers. */ |
---|
1061 | for (i = 0; i < NTXDESC; i++) { |
---|
1062 | if (sc->txs_mbuf[i] != NULL) { |
---|
1063 | m_freem(sc->txs_mbuf[i]); |
---|
1064 | sc->txs_mbuf[i] = NULL; |
---|
1065 | } |
---|
1066 | } |
---|
1067 | } |
---|
1068 | |
---|
1069 | /* |
---|
1070 | * wm_rxdrain: |
---|
1071 | * |
---|
1072 | * Drain the receive queue. |
---|
1073 | */ |
---|
1074 | static void wm_rxdrain(struct wm_softc *sc) |
---|
1075 | { |
---|
1076 | int i; |
---|
1077 | |
---|
1078 | for (i = 0; i < NRXDESC; i++) { |
---|
1079 | if (sc->rxs_mbuf[i] != NULL) { |
---|
1080 | m_freem(sc->rxs_mbuf[i]); |
---|
1081 | sc->rxs_mbuf[i] = NULL; |
---|
1082 | } |
---|
1083 | } |
---|
1084 | } |
---|
1085 | |
---|
1086 | static void i82544EI_tx_stop(struct wm_softc *sc) |
---|
1087 | { |
---|
1088 | wm_txdrain(sc); |
---|
1089 | } |
---|
1090 | |
---|
1091 | static void i82544EI_rx_stop(struct wm_softc *sc) |
---|
1092 | { |
---|
1093 | wm_rxdrain(sc); |
---|
1094 | } |
---|
1095 | |
---|
1096 | static void i82544EI_stop_hw(struct wm_softc *sc) |
---|
1097 | { |
---|
1098 | #ifdef WM_DEBUG |
---|
1099 | printk("i82544EI_stop_hw("); |
---|
1100 | #endif |
---|
1101 | |
---|
1102 | /* remove our interrupt handler which will also |
---|
1103 | * disable interrupts at the MPIC and the device |
---|
1104 | * itself |
---|
1105 | */ |
---|
1106 | if (!BSP_remove_rtems_irq_handler(&i82544IrqData)) |
---|
1107 | rtems_panic("i82544EI: unable to remove IRQ handler!"); |
---|
1108 | |
---|
1109 | CSR_WRITE(sc,WMREG_IMS, 0); |
---|
1110 | |
---|
1111 | sc->arpcom.ac_if.if_flags &= ~IFF_RUNNING; |
---|
1112 | i82544EI_tx_stop(sc); |
---|
1113 | i82544EI_rx_stop(sc); |
---|
1114 | #ifdef WM_DEBUG |
---|
1115 | printk(")"); |
---|
1116 | #endif |
---|
1117 | } |
---|
1118 | |
---|
1119 | /* |
---|
1120 | * wm_stop: [ifnet interface function] |
---|
1121 | * |
---|
1122 | * Stop transmission on the interface. |
---|
1123 | */ |
---|
1124 | static void wm_stop(struct ifnet *ifp, int disable) |
---|
1125 | { |
---|
1126 | struct wm_softc *sc = ifp->if_softc; |
---|
1127 | |
---|
1128 | #ifdef WM_DEBUG |
---|
1129 | printk("wm_stop("); |
---|
1130 | #endif |
---|
1131 | /* Stop the transmit and receive processes. */ |
---|
1132 | CSR_WRITE(sc,WMREG_TCTL, 0); |
---|
1133 | CSR_WRITE(sc,WMREG_RCTL, 0); |
---|
1134 | |
---|
1135 | wm_txdrain(sc); |
---|
1136 | wm_rxdrain(sc); |
---|
1137 | |
---|
1138 | /* Mark the interface as down */ |
---|
1139 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
---|
1140 | #ifdef WM_DEBUG |
---|
1141 | printk(")\n"); |
---|
1142 | #endif |
---|
1143 | } |
---|
1144 | |
---|
1145 | /* |
---|
1146 | * wm_eeprom_sendbits: |
---|
1147 | * |
---|
1148 | * Send a series of bits to the EEPROM. |
---|
1149 | */ |
---|
1150 | static void wm_eeprom_sendbits(struct wm_softc *sc, uint32_t bits, int nbits) |
---|
1151 | { |
---|
1152 | uint32_t reg; |
---|
1153 | int x; |
---|
1154 | |
---|
1155 | reg = CSR_READ(sc,WMREG_EECD); |
---|
1156 | |
---|
1157 | for (x = nbits; x > 0; x--) { |
---|
1158 | if (bits & (1U << (x - 1))) |
---|
1159 | reg |= EECD_DI; |
---|
1160 | else |
---|
1161 | reg &= ~EECD_DI; |
---|
1162 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1163 | rtems_bsp_delay(2); |
---|
1164 | CSR_WRITE(sc,WMREG_EECD, reg | EECD_SK); |
---|
1165 | rtems_bsp_delay(2); |
---|
1166 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1167 | rtems_bsp_delay(2); |
---|
1168 | } |
---|
1169 | } |
---|
1170 | |
---|
1171 | /* |
---|
1172 | * wm_eeprom_recvbits: |
---|
1173 | * |
---|
1174 | * Receive a series of bits from the EEPROM. |
---|
1175 | */ |
---|
1176 | static void wm_eeprom_recvbits(struct wm_softc *sc, uint32_t *valp, int nbits) |
---|
1177 | { |
---|
1178 | uint32_t reg, val; |
---|
1179 | int x; |
---|
1180 | |
---|
1181 | reg = CSR_READ(sc,WMREG_EECD) & ~EECD_DI; |
---|
1182 | |
---|
1183 | val = 0; |
---|
1184 | for (x = nbits; x > 0; x--) { |
---|
1185 | CSR_WRITE(sc,WMREG_EECD, reg | EECD_SK); |
---|
1186 | rtems_bsp_delay(2); |
---|
1187 | if (CSR_READ(sc,WMREG_EECD) & EECD_DO) |
---|
1188 | val |= (1U << (x - 1)); |
---|
1189 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1190 | rtems_bsp_delay(2); |
---|
1191 | } |
---|
1192 | *valp = val; |
---|
1193 | } |
---|
1194 | |
---|
1195 | /* |
---|
1196 | * wm_read_eeprom_uwire: |
---|
1197 | * |
---|
1198 | * Read a word from the EEPROM using the MicroWire protocol. |
---|
1199 | * |
---|
1200 | * (The 82544EI Gigabit Ethernet Controller is compatible with |
---|
1201 | * most MicroWire interface, serial EEPROM devices.) |
---|
1202 | */ |
---|
1203 | static int wm_read_eeprom_uwire(struct wm_softc *sc, int word, int wordcnt, uint16_t *data) |
---|
1204 | { |
---|
1205 | uint32_t reg, val; |
---|
1206 | int i; |
---|
1207 | |
---|
1208 | for (i = 0; i < wordcnt; i++) { |
---|
1209 | /* Clear SK and DI. */ |
---|
1210 | reg = CSR_READ(sc,WMREG_EECD) & ~(EECD_SK | EECD_DI); |
---|
1211 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1212 | |
---|
1213 | /* Set CHIP SELECT. */ |
---|
1214 | reg |= EECD_CS; |
---|
1215 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1216 | rtems_bsp_delay(2); |
---|
1217 | |
---|
1218 | /* Shift in the READ command. */ |
---|
1219 | wm_eeprom_sendbits(sc, UWIRE_OPC_READ, 3); |
---|
1220 | |
---|
1221 | /* Shift in address. */ |
---|
1222 | wm_eeprom_sendbits(sc, word + i, sc->sc_ee_addrbits); |
---|
1223 | |
---|
1224 | /* Shift out the data. */ |
---|
1225 | wm_eeprom_recvbits(sc, &val, 16); |
---|
1226 | data[i] = val & 0xffff; |
---|
1227 | |
---|
1228 | /* Clear CHIP SELECT. */ |
---|
1229 | reg = CSR_READ(sc,WMREG_EECD) & ~EECD_CS; |
---|
1230 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1231 | rtems_bsp_delay(2); |
---|
1232 | } |
---|
1233 | return (0); |
---|
1234 | } |
---|
1235 | |
---|
1236 | /* |
---|
1237 | * wm_acquire_eeprom: |
---|
1238 | * |
---|
1239 | * Perform the EEPROM handshake required on some chips. |
---|
1240 | */ |
---|
1241 | static int wm_acquire_eeprom(struct wm_softc *sc) |
---|
1242 | { |
---|
1243 | uint32_t reg; |
---|
1244 | int x; |
---|
1245 | |
---|
1246 | reg = CSR_READ(sc,WMREG_EECD); |
---|
1247 | |
---|
1248 | /* Request EEPROM access. */ |
---|
1249 | reg |= EECD_EE_REQ; |
---|
1250 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1251 | |
---|
1252 | /* ..and wait for it to be granted. */ |
---|
1253 | for (x = 0; x < 100; x++) { |
---|
1254 | reg = CSR_READ(sc,WMREG_EECD); |
---|
1255 | if (reg & EECD_EE_GNT) break; |
---|
1256 | rtems_bsp_delay(500); |
---|
1257 | } |
---|
1258 | if ((reg & EECD_EE_GNT) == 0) { |
---|
1259 | printk("Could not acquire EEPROM GNT x= %d\n", x); |
---|
1260 | reg &= ~EECD_EE_REQ; |
---|
1261 | CSR_WRITE(sc,WMREG_EECD, reg); |
---|
1262 | return (1); |
---|
1263 | } |
---|
1264 | |
---|
1265 | return (0); |
---|
1266 | } |
---|
1267 | |
---|
1268 | /* |
---|
1269 | * wm_read_eeprom: |
---|
1270 | * |
---|
1271 | * Read data from the serial EEPROM. |
---|
1272 | * 82544EI does not Perform the EEPROM handshake |
---|
1273 | */ |
---|
1274 | static int wm_read_eeprom(struct wm_softc *sc, int word, int wordcnt, uint16_t *data) |
---|
1275 | { |
---|
1276 | #if 0 |
---|
1277 | /* base on the datasheet, this does not seem to be applicable */ |
---|
1278 | if (wm_acquire_eeprom(sc)) |
---|
1279 | return(1); |
---|
1280 | #endif |
---|
1281 | return(wm_read_eeprom_uwire(sc, word, wordcnt, data)); |
---|
1282 | } |
---|
1283 | |
---|
1284 | /* |
---|
1285 | * wm_add_rxbuf: |
---|
1286 | * |
---|
1287 | * Add a receive buffer to the indiciated descriptor. |
---|
1288 | */ |
---|
1289 | static int wm_add_rxbuf(struct wm_softc *sc, int idx) |
---|
1290 | { |
---|
1291 | struct mbuf *m; |
---|
1292 | |
---|
1293 | MGETHDR(m, M_WAIT, MT_DATA); |
---|
1294 | if (m == NULL) return (ENOBUFS); |
---|
1295 | MCLGET(m, M_WAIT); |
---|
1296 | if ((m->m_flags & M_EXT) == 0) { |
---|
1297 | m_freem(m); |
---|
1298 | return (ENOBUFS); |
---|
1299 | } |
---|
1300 | m->m_pkthdr.rcvif = &sc->arpcom.ac_if; |
---|
1301 | sc->rxs_mbuf[idx] = m; |
---|
1302 | /* m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;*/ |
---|
1303 | wm_init_rxdesc(sc, idx); |
---|
1304 | #if 0 |
---|
1305 | printk("sc->rxs_mbuf[%d]= 0x%x, mbuf @ 0x%x\n", |
---|
1306 | idx, sc->rxs_mbuf[idx], le32toh(sc->sc_rxdescs[idx].wrx_addr.wa_low)); |
---|
1307 | #endif |
---|
1308 | return(0); |
---|
1309 | } |
---|
1310 | |
---|
1311 | /* |
---|
1312 | * wm_set_ral: |
---|
1313 | * |
---|
1314 | * Set an entery in the receive address list. |
---|
1315 | */ |
---|
1316 | static void |
---|
1317 | wm_set_ral(struct wm_softc *sc, const uint8_t *enaddr, int idx) |
---|
1318 | { |
---|
1319 | uint32_t ral_lo, ral_hi; |
---|
1320 | |
---|
1321 | if (enaddr != NULL) { |
---|
1322 | ral_lo = enaddr[0]|(enaddr[1] << 8)|(enaddr[2] << 16)|(enaddr[3] << 24); |
---|
1323 | ral_hi = enaddr[4] | (enaddr[5] << 8); |
---|
1324 | ral_hi |= RAL_AV; |
---|
1325 | } else { |
---|
1326 | ral_lo = 0; |
---|
1327 | ral_hi = 0; |
---|
1328 | } |
---|
1329 | |
---|
1330 | CSR_WRITE(sc,WMREG_RAL_LO(WMREG_CORDOVA_RAL_BASE, idx),ral_lo); |
---|
1331 | CSR_WRITE(sc,WMREG_RAL_HI(WMREG_CORDOVA_RAL_BASE, idx),ral_hi); |
---|
1332 | } |
---|
1333 | |
---|
1334 | /* |
---|
1335 | * wm_mchash: |
---|
1336 | * |
---|
1337 | * Compute the hash of the multicast address for the 4096-bit |
---|
1338 | * multicast filter. |
---|
1339 | */ |
---|
1340 | static uint32_t |
---|
1341 | wm_mchash(struct wm_softc *sc, const uint8_t *enaddr) |
---|
1342 | { |
---|
1343 | static const int lo_shift[4] = { 4, 3, 2, 0 }; |
---|
1344 | static const int hi_shift[4] = { 4, 5, 6, 8 }; |
---|
1345 | uint32_t hash; |
---|
1346 | |
---|
1347 | hash = (enaddr[4] >> lo_shift[sc->sc_mchash_type]) | |
---|
1348 | (((uint16_t) enaddr[5]) << hi_shift[sc->sc_mchash_type]); |
---|
1349 | |
---|
1350 | return (hash & 0xfff); |
---|
1351 | } |
---|
1352 | |
---|
1353 | /* |
---|
1354 | * wm_set_filter: Set up the receive filter. |
---|
1355 | */ |
---|
1356 | static void wm_set_filter(struct wm_softc *sc) |
---|
1357 | { |
---|
1358 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
1359 | struct ether_multi *enm; |
---|
1360 | struct ether_multistep step; |
---|
1361 | uint32_t mta_reg; |
---|
1362 | uint32_t hash, reg, bit; |
---|
1363 | int i; |
---|
1364 | |
---|
1365 | #ifdef WM_DEBUG |
---|
1366 | printk("wm_set_filter("); |
---|
1367 | #endif |
---|
1368 | mta_reg = WMREG_CORDOVA_MTA; |
---|
1369 | sc->sc_rctl &= ~(RCTL_BAM | RCTL_UPE | RCTL_MPE); |
---|
1370 | |
---|
1371 | /* if (ifp->if_flags & IFF_BROADCAST)*/ |
---|
1372 | sc->sc_rctl |= RCTL_BAM; |
---|
1373 | if (ifp->if_flags & IFF_PROMISC) { |
---|
1374 | sc->sc_rctl |= RCTL_UPE; |
---|
1375 | goto allmulti; |
---|
1376 | } |
---|
1377 | |
---|
1378 | /* |
---|
1379 | * Set the station address in the first RAL slot, and |
---|
1380 | * clear the remaining slots. |
---|
1381 | */ |
---|
1382 | wm_set_ral(sc, sc->arpcom.ac_enaddr, 0); |
---|
1383 | for (i = 1; i < WM_RAL_TABSIZE; i++) |
---|
1384 | wm_set_ral(sc, NULL, i); |
---|
1385 | |
---|
1386 | /* Clear out the multicast table. */ |
---|
1387 | for (i = 0; i < WM_MC_TABSIZE; i++) |
---|
1388 | CSR_WRITE(sc,mta_reg + (i << 2), 0); |
---|
1389 | |
---|
1390 | ETHER_FIRST_MULTI(step, &sc->arpcom, enm); |
---|
1391 | while (enm != NULL) { |
---|
1392 | if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { |
---|
1393 | /* |
---|
1394 | * We must listen to a range of multicast addresses. |
---|
1395 | * For now, just accept all multicasts, rather than |
---|
1396 | * trying to set only those filter bits needed to match |
---|
1397 | * the range. (At this time, the only use of address |
---|
1398 | * ranges is for IP multicast routing, for which the |
---|
1399 | * range is big enough to require all bits set.) |
---|
1400 | */ |
---|
1401 | goto allmulti; |
---|
1402 | } |
---|
1403 | |
---|
1404 | hash = wm_mchash(sc, enm->enm_addrlo); |
---|
1405 | |
---|
1406 | reg = (hash >> 5) & 0x7f; |
---|
1407 | bit = hash & 0x1f; |
---|
1408 | |
---|
1409 | hash = CSR_READ(sc,mta_reg + (reg << 2)); |
---|
1410 | hash |= 1U << bit; |
---|
1411 | |
---|
1412 | /* XXX Hardware bug?? */ |
---|
1413 | if ((reg & 0xe) == 1) { |
---|
1414 | bit = CSR_READ(sc,mta_reg + ((reg - 1) << 2)); |
---|
1415 | CSR_WRITE(sc,mta_reg + (reg << 2), hash); |
---|
1416 | CSR_WRITE(sc,mta_reg + ((reg - 1) << 2), bit); |
---|
1417 | } else |
---|
1418 | CSR_WRITE(sc,mta_reg + (reg << 2), hash); |
---|
1419 | |
---|
1420 | ETHER_NEXT_MULTI(step, enm); |
---|
1421 | } |
---|
1422 | |
---|
1423 | ifp->if_flags &= ~IFF_ALLMULTI; |
---|
1424 | goto setit; |
---|
1425 | |
---|
1426 | allmulti: |
---|
1427 | ifp->if_flags |= IFF_ALLMULTI; |
---|
1428 | sc->sc_rctl |= RCTL_MPE; |
---|
1429 | |
---|
1430 | setit: |
---|
1431 | CSR_WRITE(sc,WMREG_RCTL, sc->sc_rctl); |
---|
1432 | |
---|
1433 | #ifdef WM_DEBUG |
---|
1434 | printk("RCTL 0x%x)\n", CSR_READ(sc,WMREG_RCTL)); |
---|
1435 | #endif |
---|
1436 | } |
---|
1437 | |
---|
1438 | static void i82544EI_error(struct wm_softc *sc) |
---|
1439 | { |
---|
1440 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
1441 | unsigned long intr_status= sc->intr_errsts[sc->intr_err_ptr1++]; |
---|
1442 | |
---|
1443 | /* read and reset the status; because this is written |
---|
1444 | * by the ISR, we must disable interrupts here |
---|
1445 | */ |
---|
1446 | sc->intr_err_ptr1 %=INTR_ERR_SIZE; /* Till Straumann */ |
---|
1447 | if (intr_status) { |
---|
1448 | printk("Error %s%d:", ifp->if_name, ifp->if_unit); |
---|
1449 | if (intr_status & ICR_RXSEQ) { |
---|
1450 | printk("Rxq framing error (ICR= %x), if_ierrors %d\n", |
---|
1451 | intr_status, ifp->if_ierrors); |
---|
1452 | } |
---|
1453 | } |
---|
1454 | else |
---|
1455 | printk("%s%d: Ghost interrupt ?\n",ifp->if_name,ifp->if_unit); |
---|
1456 | } |
---|
1457 | |
---|
1458 | void i82544EI_printStats() |
---|
1459 | { |
---|
1460 | i82544EI_stats(root_i82544EI_dev); |
---|
1461 | } |
---|
1462 | |
---|
1463 | /* The daemon does all of the work; RX, TX and cleaning up buffers/descriptors */ |
---|
1464 | static void i82544EI_daemon(void *arg) |
---|
1465 | { |
---|
1466 | struct wm_softc *sc = (struct wm_softc*)arg; |
---|
1467 | rtems_event_set events; |
---|
1468 | struct mbuf *m=0; |
---|
1469 | struct ifnet *ifp=&sc->arpcom.ac_if; |
---|
1470 | |
---|
1471 | #ifdef WM_DEBUG |
---|
1472 | printk("i82544EI_daemon()\n"); |
---|
1473 | #endif |
---|
1474 | |
---|
1475 | /* NOTE: our creator possibly holds the bsdnet_semaphore. |
---|
1476 | * since that has PRIORITY_INVERSION enabled, our |
---|
1477 | * subsequent call to bsdnet_event_receive() will |
---|
1478 | * _not_ release it. It's still in posession of our |
---|
1479 | * owner. |
---|
1480 | * This is different from how killing this task |
---|
1481 | * is handled. |
---|
1482 | */ |
---|
1483 | |
---|
1484 | for (;;) { |
---|
1485 | /* sleep until there's work to be done */ |
---|
1486 | /* Note: bsdnet_event_receive() acquires |
---|
1487 | * the global bsdnet semaphore for |
---|
1488 | * mutual exclusion. |
---|
1489 | */ |
---|
1490 | rtems_bsdnet_event_receive(ALL_EVENTS, |
---|
1491 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
---|
1492 | RTEMS_NO_TIMEOUT, |
---|
1493 | &events); |
---|
1494 | if (KILL_EVENT & events) break; |
---|
1495 | |
---|
1496 | if (events & RX_EVENT) i82544EI_rx(sc); |
---|
1497 | |
---|
1498 | /* clean up and try sending packets */ |
---|
1499 | do { |
---|
1500 | i82544EI_txq_done(sc); |
---|
1501 | |
---|
1502 | while (sc->txq_free>0) { |
---|
1503 | if (sc->txq_free>TXQ_HiLmt_OFF) { |
---|
1504 | IF_DEQUEUE(&ifp->if_snd,m); |
---|
1505 | if (m==0) break; |
---|
1506 | i82544EI_sendpacket(sc, m); |
---|
1507 | } |
---|
1508 | else { |
---|
1509 | i82544EI_txq_done(sc); |
---|
1510 | break; |
---|
1511 | } |
---|
1512 | if (events & RX_EVENT) i82544EI_rx(sc); |
---|
1513 | } |
---|
1514 | /* we leave this loop |
---|
1515 | * - either because there's no free buffer |
---|
1516 | * (m=0 initializer && !sc->txq_free) |
---|
1517 | * - or there's nothing to send (IF_DEQUEUE |
---|
1518 | * returned 0 |
---|
1519 | */ |
---|
1520 | } while (m && sc->txq_free); |
---|
1521 | |
---|
1522 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
1523 | |
---|
1524 | /* Log errors and other uncommon events. */ |
---|
1525 | if (events & ERR_EVENT) i82544EI_error(sc); |
---|
1526 | /* Rx overrun */ |
---|
1527 | if ( events & INIT_EVENT) { |
---|
1528 | printk("Warnning, Rx overrun. Make sure the old mbuf was free\n"); |
---|
1529 | i82544EI_ifinit(arg); |
---|
1530 | } |
---|
1531 | |
---|
1532 | } /* end for(;;) { rtems_bsdnet_event_receive() .....*/ |
---|
1533 | |
---|
1534 | printf("out of daemon\n"); |
---|
1535 | ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); |
---|
1536 | |
---|
1537 | /* shut down the hardware */ |
---|
1538 | i82544EI_stop_hw(sc); |
---|
1539 | /* flush the output queue */ |
---|
1540 | for (;;) { |
---|
1541 | IF_DEQUEUE(&ifp->if_snd,m); |
---|
1542 | if (!m) break; |
---|
1543 | m_freem(m); |
---|
1544 | } |
---|
1545 | /* as of 'rtems_bsdnet_event_receive()' we own the |
---|
1546 | * networking semaphore |
---|
1547 | */ |
---|
1548 | rtems_bsdnet_semaphore_release(); |
---|
1549 | rtems_semaphore_release(sc->daemonSync); |
---|
1550 | |
---|
1551 | /* Note that I dont use sc->daemonTid here - |
---|
1552 | * theoretically, that variable could already |
---|
1553 | * hold a newly created TID |
---|
1554 | */ |
---|
1555 | rtems_task_delete(RTEMS_SELF); |
---|
1556 | } |
---|