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annotate packages/devs/eth/arm/ebsa285/current/ChangeLog @ 126:518f42066aba ecos-sw-2000-09-19

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Merge from eCos master repository on 2000-09-19-06:25:26-BST
author jlarmour
date Tue, 19 Sep 2000 05:53:51 +0000
parents 0ec04793409a
children 0c2b7be0d798
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126
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1 2000-09-11 Hugo Tyson <hmt@cygnus.co.uk>
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2
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3 * src/if_ebsa285.c (i82559_poll): Only diddle the interface we
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4 were asked to. This is more correct in terms of the intent of the
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5 API, though it shouldn't really be necessary.
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7 2000-09-06 Hugo Tyson <hmt@cygnus.co.uk>
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8
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9 * src/if_ebsa285.c (pci_init_find_82559s): Add asserts and an
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10 unconditional check that the PCI window as configured matches the
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11 address and size of the pci_window region from the MLT. This is
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12 here because at present the MLT and CT cannot intercommunicate
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13 enough. The separation of the PCI window is needed because
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14 otherwise the malloc heap will eat all memory. [This is related
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15 to CR 902624-CR, "MLT needs to be configuration aware"]
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17 2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
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18
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19 * OVERVIEW: This is part of the change to the network stack to
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20 greatly reduce latencies both of (other) DSRs and of thread
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21 scheduling. All the work that the network stack *and* individual
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22 ether drivers used to do in DSRs (including alarm callbacks and
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23 data copies to/from the device memory) is moved into a "fast
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24 network thread" instead. It calls a device's "deliver" function
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25 to do the work that was previously in the DSR. This is a separate
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26 thread so that it can be set higher priority than application
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27 threads in order to minimize packet loss (depending on the
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28 driver), if required (the application threads presumed to be
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29 higher priority in turn than the network thread). A crucial
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30 consequence of this is that we are no longer locking against DSRs,
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31 so a plain mutex can be used rather than the global scheduler
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32 lock, thus simplifying all the splfoo/splx() style functions.
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33
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34 * src/if_ebsa285.c: Minor: fix the big assert in i82559_send()
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35 which suffered a race condition when called from the fast thread
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36 rather than from a DSR. Major: Add a "deliver" entry to the
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37 interface record for the "fast thread" implementation of the
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38 network internal comms system. Provide a pass-up DSR to the
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39 logical ether driver's DSR and appropriate delivery routine(s).
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40 i82559_poll() now calls i82559_deliver() rather than the DSR. Add
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41 valid data for mux'd DSR to pass on up.
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42
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43 2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
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44
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45 * tests/test_net_realtime.h: Tighten up the latency requirements
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46 by a factor of 5; it all seems happy, so committed.
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47
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48 2000-08-25 Hugo Tyson <hmt@cygnus.co.uk>
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49
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50 * src/if_ebsa285.c (i82559_ioctl): A little further diddling; have
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51 a bool to say whether the dot3 info is filled in.
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52
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53 2000-08-24 Hugo Tyson <hmt@cygnus.co.uk>
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54
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55 * cdl/ebsa285_eth_drivers.cdl: Do not export a symbol for the
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56 device info file (include/ebsa285_info.h) since nobody needs
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57 (portably) to include it now.
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58
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59 * src/if_ebsa285.c (i82559_ioctl): Handle new ioctl calls
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60 ETH_DRV_GET_IF_STATS_UD and ETH_DRV_GET_IF_STATS to get loads of
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61 statistical information out. _UD means update. The nonUD one can
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62 be used instead mostly, if we find the performance hit too large.
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63 This should allow SNMP (a) to not explode, (b) to get useful info
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64 out of other device implementations than this one.
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65
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66 * include/ebsa285_info.h: Remove all the macro cruft for feature
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67 detecting of lots of individual statistics; we now just have a
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68 catch-all struct that SNMP uses, defined in the common ether
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69 driver environment.
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70
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71 2000-08-15 Hugo Tyson <hmt@cygnus.co.uk>
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72
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73 * src/if_ebsa285.c (PacketRxReady): Put back the check for very
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74 small packets into the driver; the layer above checks for that
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75 (defensive programming) but only *after* asserting that the size
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76 is large enough, to help detect that scenario from other drivers.
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77 I believe we only have struct ether_header available if CYGPKG_NET
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78 but I could be wrong.
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79 [CASE 104353]
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80
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81 2000-08-08 Hugo Tyson <hmt@cygnus.co.uk>
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82
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83 * src/if_ebsa285.c (eth_set_promiscuous_mode):
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84 - ccs->config_bytes[18]=0x70;
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85 + ccs->config_bytes[18]=0x72; // Keep the Padding Enable bit
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86 ...otherwise short frame sends don't work in promisc mode.
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87 [CASE 104289]
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88
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89 2000-08-07 Gary Thomas <gthomas@redhat.com>
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90
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91 * src/if_ebsa285.c (pciwindow_mem_alloc): Take out very noisy debug.
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92
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93 2000-08-03 Gary Thomas <gthomas@redhat.com>
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94
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95 * src/if_ebsa285.c: Changes for stand-alone mode.
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96
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97 * cdl/ebsa285_eth_drivers.cdl: Ethernet driver package hierarchy changed.
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98 Add option to control number of interfaces.
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99
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100 2000-07-28 Hugo Tyson <hmt@cygnus.co.uk>
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101
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102 * src/if_ebsa285.c (PacketRxReady): Do not attempt to forward
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103 short packets; eth_drv.c assumes there is at least a header there.
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104 (i82559_recv): Also be more careful and ASSERTive about -ve buffer
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105 sizes; be more defensive about sglists. [CASE 104206]
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106
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107 2000-07-26 Gary Thomas <gthomas@redhat.com>
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108
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109 * src/if_ebsa285.c: Update for new eth_drv interfaces.
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110
112
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111 2000-07-18 Hugo Tyson <hmt@cygnus.co.uk>
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112
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113 * src/if_ebsa285.c (i82559_poll): Fill in the flesh of this, it
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114 just calls ISR and DSR repeatedly.
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115 (i82559_start): Look in the device record for promiscuous mode
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116 flag; it should be passed though the common layer, but it's not
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117 [yet] - this change from Andrew Lunn/ASCOM. Also a fix and delay
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118 to the promisc mode code per se.
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119
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120 2000-07-17 Hugo Tyson <hmt@cygnus.co.uk>
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121
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122 * src/if_ebsa285.c (i82559_poll): New function, just to fill in
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123 the interface record; not used.
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124
105
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125 2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
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126
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127 * cdl/ebsa285_eth_drivers.cdl: Add sesquipedalian option
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128 CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_82559_STATISTICS in (now)
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129 component CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_STATISTICS to control
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130 keeping (well, harvesting really) the i82559's internal stats.
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131 Reputedly, it doesn't service the net whilst this is happening, so
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132 it could be viewed a bad thing. Hence the option.
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133
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134 * include/ebsa285_info.h: Only describe the I82559_COUNTERS
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135 i82559_counters[2]; structs if full stats are to be kept.
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136
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137 * src/if_ebsa285.c (update_statistics): Only include this if full
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138 stats are to be kept.
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139
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140 2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
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141
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142 * src/if_ebsa285.c (ResetRxRing): Re-do the management of the
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143 RxRing; have an end-of-list flag (EL) in the last entry, and as
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144 you unload filled slots, drag it round after you.
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145
101
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146 2000-06-14 Hugo Tyson <hmt@cygnus.co.uk>
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147
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148 * cdl/ebsa285_eth_drivers.cdl: Add option to control statistics
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149 keeping.
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150
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151 * include/ebsa285_info.h: Act on it.
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152
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153 2000-06-13 Hugo Tyson <hmt@cygnus.co.uk>
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154
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155 * cdl/ebsa285_eth_drivers.cdl: Properly include the new header
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156 file and define symbols to allow client code to get at it without
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157 knowing the particular device driver name.
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158
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159 * include/ebsa285_info.h: New file: export various statistics
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160 information about the driver for use by monitoring and
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161 network-management systems. This requires exposing the
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162 (otherwise) internal structures of the driver.
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163
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164 * src/if_ebsa285.c: remove a lot of structure definitions &c that
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165 are now necessarily in the new header; add a couple of new
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166 routines which provide status and update statistics from the
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167 device into memory; tidy up control of whether stats-keeping is
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168 enabled.
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169
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170 2000-06-06 Hugo Tyson <hmt@cygnus.co.uk>
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171
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172 * cdl/ebsa285_eth_drivers.cdl (define_proc): Add #define of
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173 CYGDAT_DEVS_ETH_DESCRIPTION in the config file for information.
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174
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175 2000-05-12 Hugo Tyson <hmt@cygnus.co.uk>
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176
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177 * tests/test_net_realtime.h (tnr_print_activity): New routine to
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178 check the system is working, tidied up the API. It works!
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179
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180 2000-05-11 Hugo Tyson <hmt@cygnus.co.uk>
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181
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182 * cdl/ebsa285_eth_drivers.cdl: Added export of the test header
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183 below, and config opts for controlling EEPROM writing and all the
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184 status chatter as the device starts up.
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185
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186 * src/if_ebsa285.c: Reworked the code for reading and setting the
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187 EEPROM that holds the MAC address. This is very ugly, but now
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188 more reliable. Also tidied up printing cruft with neater
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189 configury, and made it an option (for safety) whether it's
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190 possible to write the EEPROM at all.
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191
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192 * tests/test_net_realtime.h: New file - it is intended to be used
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193 by networking tests to verify that latency is not compromised by
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194 the stack and driver. It's very platform specific, hence the
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195 location in here. This is a preliminary version only.
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196
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197 2000-04-27 Hugo Tyson <hmt@cygnus.co.uk>
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198
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199 * src/if_ebsa285.c: A serious re-write. This cuts out a lot of
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200 code from the old version and improves the performance greatly.
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201
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202 The cruft was mainly doing lots of explicit event communication
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203 between the ISR and DSR, when in fact all the state needed is
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204 present in the tx/rx rings. So both ISRs and DSRs regard their
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205 call as an opportunity to progress everything they can, rather
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206 than only dealing with one interrupt cause at a time; the
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207 connection between them is now rather looser.
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208
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209 Interrups can now be re-enabled after the ISR (in other words they
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210 are not masked in the ISR), no need to wait for the DSR, but in
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211 consequence some DSR code must mask/unmask intrs as it works.
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212
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213 The 82559 appears to be a little slow in reacting to commands and
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214 state changes, so some interrupts were being lost - or persisting
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215 beyond their desired life - so there's some kinda polling code to
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216 deal with that also. We also rely on the foreground to kind of
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217 poll in the same way, in the send/can_send calls - we know the
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218 stack will re-try if necessary, though this is rare.
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219
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220 The driver now works (albeit at much reduced performance) with as
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221 few as 6 rx and tx buffers - in other words the "queue full/out of
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222 rx buffers" states have been tested and all is well. It works
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223 generally fine with 8 buffers of each kind.
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224
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225 The mux ISR and DSR are now rather more polled than the old
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226 versions; we just try to do things with both devices (if active)
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227 by simply calling each unitary ISR/DSR respectively.
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228
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229 I also re-ordered some of the code, moving utilities to the end of
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230 the file and grouping together Tx and Rx machines a bit better.
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231
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232 2000-04-13 Hugo Tyson <hmt@cygnus.co.uk>
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233
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234 * src/if_ebsa285.c: Attribution to Ron Spence, Pacific Softworks
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235 added as a contributor.
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236
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237 2000-04-07 Hugo Tyson <hmt@cygnus.co.uk>
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238
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239 * ecos.db: Re-organize device packages. This is a massive change
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240 involving deleting all the sources for serial and ethernet drivers
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241 from where they used to live in
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242 packages/io/serial/current/src/ARCH/PLATFORM.[ch]
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243 packages/net/drivers/eth/PLATFORM/current/src/...
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244 and reinstating them in
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245 packages/devs/serial/ARCH/PLATFORM/current/src/...
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246 packages/devs/eth/ARCH/PLATFORM/current/src/...
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247
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248 All these new packages are properly defined in ecos.db, and are
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249 all of type "hardware" so that a "target" can grab them.
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250
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251 This directory layout is descriptive of the devices we have right
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252 now, arch and platform are separate levels just to make it easier
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253 to navigate in the filesystem and similar to the HAL structure in
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254 the filesystem.
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255
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256 It is *not* prescriptive of future work; for example, the mythical
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257 common highly-portable 16550 serial driver which works on many
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258 targets would be called "devs/serial/s16550/current", or a serial
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259 device for a particular board (cogent springs to mind) that can
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260 work with different CPUs fitted is "devs/serial/cogent/current".
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261
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262 Changelogs have been preserved and replicated over all the new
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263 packages, so that no history is lost.
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264
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265 The contents of individual source files are unchanged; they build
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266 in just the same emvironment except for a very few cases where the
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267 config file name changed in this movement.
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268
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269 Targets in ecos.db have been redefined to bring in all relevant
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270 hardware packages including net and serial drivers (but the newly
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271 included packages are only active if their desired parent is
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272 available.)
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273
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274 The names of CDL options (and their #defines of course) stay the
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275 same for the serial drivers, for backward compatibility.
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276
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277 * templates/*/current.ect: these have had CYGPKG_IO_SERIAL added
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278 rather than it being in (almost) all target definitions.
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279
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280 2000-03-29 Hugo Tyson <hmt@cygnus.co.uk>
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281
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282 * src/if_ebsa285.c (i82559_recv): Be happy with NULLs in the
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283 SGlist; it means the caller is out of memory so drop the packet on
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284 the floor. Also remove a completely redundant test.
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285
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286 2000-03-06 Hugo Tyson <hmt@cygnus.co.uk>
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287
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288 * src/if_ebsa285.c (i82559_can_send): Update net driver to new
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289 interface style. This is incomplete wrt promiscuous mode, but
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290 that's probably about all.
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291
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292 2000-02-14 Gary Thomas <gthomas@cygnus.co.uk>
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293
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294 * cdl/ebsa285_eth_drivers.cdl: Update CDL to indicate multiple
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295 interface support.
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296
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297 2000-02-14 Hugo Tyson <hmt@cygnus.co.uk>
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298
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299 * src/if_ebsa285.c (pci_init_find_82559s): Tidy comments somewhat
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300 and set debug and stats collecting defines to most friendly
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301 settings.
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302
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303 2000-02-10 Hugo Tyson <hmt@cygnus.co.uk>
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304
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305 * src/if_ebsa285.c (PacketRxReady): Fix bug; current descriptor
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306 was not being write back for the callback to use. Hence asserts
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307 on state of rfd were firing in busy times - that leading rfd had
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308 already been drained.
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309
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310 Also rationalized meaning of DEBUG printy symbols a bit - it's now
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311 chatty during startup/foreground manipulations but not in any
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312 performance related activities ie. rx or tx.
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313
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314 2000-02-09 John Dallaway <jld@cygnus.co.uk>
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315
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316 * cdl/ebsa285_eth_drivers.cdl:
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317
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318 Reparent under CYGPKG_NET_ETH_DRIVERS and tidy display strings.
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319
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320 2000-02-08 Hugo Tyson <hmt@cygnus.co.uk>
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321
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322 * src/if_ebsa285.c: New File.
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323 * cdl/ebsa285_eth_drivers.cdl: New File.
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324
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325 Initial Checkin of EBSA285 Ethernet driver.
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326
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327 It's one monolithic file at present, and should be split up into a
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328 more generic Intel 82559 driver plus platform-specific parts (PCI
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329 et al) plus eCos/Red-Hat-BSD-stack parts.
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330
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331 //===========================================================================
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332 //####COPYRIGHTBEGIN####
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333 //
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334 // -------------------------------------------
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335 // The contents of this file are subject to the Red Hat eCos Public License
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336 // Version 1.1 (the "License"); you may not use this file except in
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337 // compliance with the License. You may obtain a copy of the License at
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338 // http://www.redhat.com/
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339 //
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340 // Software distributed under the License is distributed on an "AS IS"
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341 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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342 // License for the specific language governing rights and limitations under
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343 // the License.
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344 //
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345 // The Original Code is eCos - Embedded Configurable Operating System,
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346 // released September 30, 1998.
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347 //
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348 // The Initial Developer of the Original Code is Red Hat.
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349 // Portions created by Red Hat are
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350 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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351 // All Rights Reserved.
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352 // -------------------------------------------
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353 //
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354 //####COPYRIGHTEND####
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355 //===========================================================================
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356
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357
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358