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annotate packages/devs/eth/arm/ebsa285/current/ChangeLog @ 124:0ec04793409a ecos-sw-2000-09-11

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Merge from eCos master repository on 2000-09-11-03:00:13-BST
author jlarmour
date Mon, 11 Sep 2000 02:42:46 +0000
parents 6bd9d475ed4b
children 518f42066aba
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124
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1 2000-09-06 Hugo Tyson <hmt@cygnus.co.uk>
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2
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3 * src/if_ebsa285.c (pci_init_find_82559s): Add asserts and an
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4 unconditional check that the PCI window as configured matches the
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5 address and size of the pci_window region from the MLT. This is
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6 here because at present the MLT and CT cannot intercommunicate
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7 enough. The separation of the PCI window is needed because
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8 otherwise the malloc heap will eat all memory. [This is related
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9 to CR 902624-CR, "MLT needs to be configuration aware"]
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11 2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
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12
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13 * OVERVIEW: This is part of the change to the network stack to
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14 greatly reduce latencies both of (other) DSRs and of thread
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15 scheduling. All the work that the network stack *and* individual
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16 ether drivers used to do in DSRs (including alarm callbacks and
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17 data copies to/from the device memory) is moved into a "fast
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18 network thread" instead. It calls a device's "deliver" function
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19 to do the work that was previously in the DSR. This is a separate
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20 thread so that it can be set higher priority than application
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21 threads in order to minimize packet loss (depending on the
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22 driver), if required (the application threads presumed to be
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23 higher priority in turn than the network thread). A crucial
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24 consequence of this is that we are no longer locking against DSRs,
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25 so a plain mutex can be used rather than the global scheduler
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26 lock, thus simplifying all the splfoo/splx() style functions.
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27
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28 * src/if_ebsa285.c: Minor: fix the big assert in i82559_send()
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29 which suffered a race condition when called from the fast thread
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30 rather than from a DSR. Major: Add a "deliver" entry to the
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31 interface record for the "fast thread" implementation of the
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32 network internal comms system. Provide a pass-up DSR to the
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33 logical ether driver's DSR and appropriate delivery routine(s).
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34 i82559_poll() now calls i82559_deliver() rather than the DSR. Add
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35 valid data for mux'd DSR to pass on up.
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36
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37 2000-09-01 Hugo Tyson <hmt@cygnus.co.uk>
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38
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39 * tests/test_net_realtime.h: Tighten up the latency requirements
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40 by a factor of 5; it all seems happy, so committed.
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41
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42 2000-08-25 Hugo Tyson <hmt@cygnus.co.uk>
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43
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44 * src/if_ebsa285.c (i82559_ioctl): A little further diddling; have
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45 a bool to say whether the dot3 info is filled in.
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46
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47 2000-08-24 Hugo Tyson <hmt@cygnus.co.uk>
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48
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49 * cdl/ebsa285_eth_drivers.cdl: Do not export a symbol for the
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50 device info file (include/ebsa285_info.h) since nobody needs
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51 (portably) to include it now.
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52
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53 * src/if_ebsa285.c (i82559_ioctl): Handle new ioctl calls
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54 ETH_DRV_GET_IF_STATS_UD and ETH_DRV_GET_IF_STATS to get loads of
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55 statistical information out. _UD means update. The nonUD one can
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56 be used instead mostly, if we find the performance hit too large.
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57 This should allow SNMP (a) to not explode, (b) to get useful info
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58 out of other device implementations than this one.
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59
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60 * include/ebsa285_info.h: Remove all the macro cruft for feature
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61 detecting of lots of individual statistics; we now just have a
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62 catch-all struct that SNMP uses, defined in the common ether
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63 driver environment.
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64
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65 2000-08-15 Hugo Tyson <hmt@cygnus.co.uk>
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66
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67 * src/if_ebsa285.c (PacketRxReady): Put back the check for very
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68 small packets into the driver; the layer above checks for that
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69 (defensive programming) but only *after* asserting that the size
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70 is large enough, to help detect that scenario from other drivers.
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71 I believe we only have struct ether_header available if CYGPKG_NET
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72 but I could be wrong.
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73 [CASE 104353]
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74
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75 2000-08-08 Hugo Tyson <hmt@cygnus.co.uk>
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76
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77 * src/if_ebsa285.c (eth_set_promiscuous_mode):
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78 - ccs->config_bytes[18]=0x70;
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79 + ccs->config_bytes[18]=0x72; // Keep the Padding Enable bit
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80 ...otherwise short frame sends don't work in promisc mode.
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81 [CASE 104289]
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82
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83 2000-08-07 Gary Thomas <gthomas@redhat.com>
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84
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85 * src/if_ebsa285.c (pciwindow_mem_alloc): Take out very noisy debug.
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86
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87 2000-08-03 Gary Thomas <gthomas@redhat.com>
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88
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89 * src/if_ebsa285.c: Changes for stand-alone mode.
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90
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91 * cdl/ebsa285_eth_drivers.cdl: Ethernet driver package hierarchy changed.
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92 Add option to control number of interfaces.
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93
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94 2000-07-28 Hugo Tyson <hmt@cygnus.co.uk>
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95
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96 * src/if_ebsa285.c (PacketRxReady): Do not attempt to forward
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97 short packets; eth_drv.c assumes there is at least a header there.
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98 (i82559_recv): Also be more careful and ASSERTive about -ve buffer
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99 sizes; be more defensive about sglists. [CASE 104206]
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100
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101 2000-07-26 Gary Thomas <gthomas@redhat.com>
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102
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103 * src/if_ebsa285.c: Update for new eth_drv interfaces.
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104
112
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105 2000-07-18 Hugo Tyson <hmt@cygnus.co.uk>
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106
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107 * src/if_ebsa285.c (i82559_poll): Fill in the flesh of this, it
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108 just calls ISR and DSR repeatedly.
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109 (i82559_start): Look in the device record for promiscuous mode
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110 flag; it should be passed though the common layer, but it's not
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111 [yet] - this change from Andrew Lunn/ASCOM. Also a fix and delay
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112 to the promisc mode code per se.
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113
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114 2000-07-17 Hugo Tyson <hmt@cygnus.co.uk>
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115
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116 * src/if_ebsa285.c (i82559_poll): New function, just to fill in
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117 the interface record; not used.
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118
105
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119 2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
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120
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121 * cdl/ebsa285_eth_drivers.cdl: Add sesquipedalian option
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122 CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_82559_STATISTICS in (now)
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123 component CYGDBG_DEVS_ETH_ARM_EBSA285_KEEP_STATISTICS to control
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124 keeping (well, harvesting really) the i82559's internal stats.
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125 Reputedly, it doesn't service the net whilst this is happening, so
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126 it could be viewed a bad thing. Hence the option.
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127
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128 * include/ebsa285_info.h: Only describe the I82559_COUNTERS
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129 i82559_counters[2]; structs if full stats are to be kept.
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130
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131 * src/if_ebsa285.c (update_statistics): Only include this if full
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132 stats are to be kept.
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133
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134 2000-06-27 Hugo Tyson <hmt@cygnus.co.uk>
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135
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136 * src/if_ebsa285.c (ResetRxRing): Re-do the management of the
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137 RxRing; have an end-of-list flag (EL) in the last entry, and as
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138 you unload filled slots, drag it round after you.
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139
101
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140 2000-06-14 Hugo Tyson <hmt@cygnus.co.uk>
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141
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142 * cdl/ebsa285_eth_drivers.cdl: Add option to control statistics
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143 keeping.
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144
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145 * include/ebsa285_info.h: Act on it.
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146
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147 2000-06-13 Hugo Tyson <hmt@cygnus.co.uk>
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148
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149 * cdl/ebsa285_eth_drivers.cdl: Properly include the new header
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150 file and define symbols to allow client code to get at it without
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151 knowing the particular device driver name.
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152
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153 * include/ebsa285_info.h: New file: export various statistics
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154 information about the driver for use by monitoring and
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155 network-management systems. This requires exposing the
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156 (otherwise) internal structures of the driver.
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157
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158 * src/if_ebsa285.c: remove a lot of structure definitions &c that
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159 are now necessarily in the new header; add a couple of new
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160 routines which provide status and update statistics from the
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161 device into memory; tidy up control of whether stats-keeping is
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162 enabled.
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163
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164 2000-06-06 Hugo Tyson <hmt@cygnus.co.uk>
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165
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166 * cdl/ebsa285_eth_drivers.cdl (define_proc): Add #define of
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167 CYGDAT_DEVS_ETH_DESCRIPTION in the config file for information.
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168
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169 2000-05-12 Hugo Tyson <hmt@cygnus.co.uk>
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170
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171 * tests/test_net_realtime.h (tnr_print_activity): New routine to
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172 check the system is working, tidied up the API. It works!
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173
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174 2000-05-11 Hugo Tyson <hmt@cygnus.co.uk>
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175
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176 * cdl/ebsa285_eth_drivers.cdl: Added export of the test header
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177 below, and config opts for controlling EEPROM writing and all the
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178 status chatter as the device starts up.
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179
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180 * src/if_ebsa285.c: Reworked the code for reading and setting the
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181 EEPROM that holds the MAC address. This is very ugly, but now
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182 more reliable. Also tidied up printing cruft with neater
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183 configury, and made it an option (for safety) whether it's
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184 possible to write the EEPROM at all.
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185
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186 * tests/test_net_realtime.h: New file - it is intended to be used
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187 by networking tests to verify that latency is not compromised by
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188 the stack and driver. It's very platform specific, hence the
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189 location in here. This is a preliminary version only.
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190
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191 2000-04-27 Hugo Tyson <hmt@cygnus.co.uk>
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192
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193 * src/if_ebsa285.c: A serious re-write. This cuts out a lot of
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194 code from the old version and improves the performance greatly.
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195
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196 The cruft was mainly doing lots of explicit event communication
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197 between the ISR and DSR, when in fact all the state needed is
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198 present in the tx/rx rings. So both ISRs and DSRs regard their
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199 call as an opportunity to progress everything they can, rather
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200 than only dealing with one interrupt cause at a time; the
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201 connection between them is now rather looser.
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202
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203 Interrups can now be re-enabled after the ISR (in other words they
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204 are not masked in the ISR), no need to wait for the DSR, but in
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205 consequence some DSR code must mask/unmask intrs as it works.
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206
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207 The 82559 appears to be a little slow in reacting to commands and
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208 state changes, so some interrupts were being lost - or persisting
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209 beyond their desired life - so there's some kinda polling code to
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210 deal with that also. We also rely on the foreground to kind of
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211 poll in the same way, in the send/can_send calls - we know the
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212 stack will re-try if necessary, though this is rare.
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213
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214 The driver now works (albeit at much reduced performance) with as
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215 few as 6 rx and tx buffers - in other words the "queue full/out of
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216 rx buffers" states have been tested and all is well. It works
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217 generally fine with 8 buffers of each kind.
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218
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219 The mux ISR and DSR are now rather more polled than the old
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220 versions; we just try to do things with both devices (if active)
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221 by simply calling each unitary ISR/DSR respectively.
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222
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223 I also re-ordered some of the code, moving utilities to the end of
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224 the file and grouping together Tx and Rx machines a bit better.
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225
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226 2000-04-13 Hugo Tyson <hmt@cygnus.co.uk>
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227
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228 * src/if_ebsa285.c: Attribution to Ron Spence, Pacific Softworks
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229 added as a contributor.
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230
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231 2000-04-07 Hugo Tyson <hmt@cygnus.co.uk>
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232
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233 * ecos.db: Re-organize device packages. This is a massive change
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234 involving deleting all the sources for serial and ethernet drivers
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235 from where they used to live in
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236 packages/io/serial/current/src/ARCH/PLATFORM.[ch]
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237 packages/net/drivers/eth/PLATFORM/current/src/...
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238 and reinstating them in
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239 packages/devs/serial/ARCH/PLATFORM/current/src/...
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240 packages/devs/eth/ARCH/PLATFORM/current/src/...
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241
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242 All these new packages are properly defined in ecos.db, and are
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243 all of type "hardware" so that a "target" can grab them.
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244
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245 This directory layout is descriptive of the devices we have right
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246 now, arch and platform are separate levels just to make it easier
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247 to navigate in the filesystem and similar to the HAL structure in
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248 the filesystem.
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249
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250 It is *not* prescriptive of future work; for example, the mythical
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251 common highly-portable 16550 serial driver which works on many
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252 targets would be called "devs/serial/s16550/current", or a serial
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253 device for a particular board (cogent springs to mind) that can
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254 work with different CPUs fitted is "devs/serial/cogent/current".
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255
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256 Changelogs have been preserved and replicated over all the new
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257 packages, so that no history is lost.
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258
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259 The contents of individual source files are unchanged; they build
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260 in just the same emvironment except for a very few cases where the
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261 config file name changed in this movement.
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262
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263 Targets in ecos.db have been redefined to bring in all relevant
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264 hardware packages including net and serial drivers (but the newly
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265 included packages are only active if their desired parent is
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266 available.)
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267
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268 The names of CDL options (and their #defines of course) stay the
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269 same for the serial drivers, for backward compatibility.
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270
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271 * templates/*/current.ect: these have had CYGPKG_IO_SERIAL added
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272 rather than it being in (almost) all target definitions.
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273
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274 2000-03-29 Hugo Tyson <hmt@cygnus.co.uk>
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275
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276 * src/if_ebsa285.c (i82559_recv): Be happy with NULLs in the
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277 SGlist; it means the caller is out of memory so drop the packet on
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278 the floor. Also remove a completely redundant test.
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279
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280 2000-03-06 Hugo Tyson <hmt@cygnus.co.uk>
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281
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282 * src/if_ebsa285.c (i82559_can_send): Update net driver to new
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283 interface style. This is incomplete wrt promiscuous mode, but
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284 that's probably about all.
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285
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286 2000-02-14 Gary Thomas <gthomas@cygnus.co.uk>
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287
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288 * cdl/ebsa285_eth_drivers.cdl: Update CDL to indicate multiple
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289 interface support.
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290
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291 2000-02-14 Hugo Tyson <hmt@cygnus.co.uk>
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292
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293 * src/if_ebsa285.c (pci_init_find_82559s): Tidy comments somewhat
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294 and set debug and stats collecting defines to most friendly
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295 settings.
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296
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297 2000-02-10 Hugo Tyson <hmt@cygnus.co.uk>
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298
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299 * src/if_ebsa285.c (PacketRxReady): Fix bug; current descriptor
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300 was not being write back for the callback to use. Hence asserts
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301 on state of rfd were firing in busy times - that leading rfd had
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302 already been drained.
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303
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304 Also rationalized meaning of DEBUG printy symbols a bit - it's now
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305 chatty during startup/foreground manipulations but not in any
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306 performance related activities ie. rx or tx.
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307
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308 2000-02-09 John Dallaway <jld@cygnus.co.uk>
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309
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310 * cdl/ebsa285_eth_drivers.cdl:
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311
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312 Reparent under CYGPKG_NET_ETH_DRIVERS and tidy display strings.
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313
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314 2000-02-08 Hugo Tyson <hmt@cygnus.co.uk>
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315
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316 * src/if_ebsa285.c: New File.
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317 * cdl/ebsa285_eth_drivers.cdl: New File.
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318
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319 Initial Checkin of EBSA285 Ethernet driver.
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320
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321 It's one monolithic file at present, and should be split up into a
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322 more generic Intel 82559 driver plus platform-specific parts (PCI
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323 et al) plus eCos/Red-Hat-BSD-stack parts.
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324
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325 //===========================================================================
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326 //####COPYRIGHTBEGIN####
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327 //
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328 // -------------------------------------------
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329 // The contents of this file are subject to the Red Hat eCos Public License
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330 // Version 1.1 (the "License"); you may not use this file except in
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331 // compliance with the License. You may obtain a copy of the License at
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332 // http://www.redhat.com/
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333 //
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334 // Software distributed under the License is distributed on an "AS IS"
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335 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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336 // License for the specific language governing rights and limitations under
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337 // the License.
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338 //
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339 // The Original Code is eCos - Embedded Configurable Operating System,
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340 // released September 30, 1998.
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341 //
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342 // The Initial Developer of the Original Code is Red Hat.
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343 // Portions created by Red Hat are
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344 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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345 // All Rights Reserved.
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346 // -------------------------------------------
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347 //
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348 //####COPYRIGHTEND####
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349 //===========================================================================
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350
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351
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352