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1 /* |
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2 |
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3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux. |
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4 |
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5 Maintained by Jeff Garzik <jgarzik@pobox.com> |
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6 Copyright 2000-2002 Jeff Garzik |
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7 |
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8 Much code comes from Donald Becker's rtl8139.c driver, |
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9 versions 1.13 and older. This driver was originally based |
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10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13: |
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11 |
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12 -----<snip>----- |
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13 |
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14 Written 1997-2001 by Donald Becker. |
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15 This software may be used and distributed according to the |
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16 terms of the GNU General Public License (GPL), incorporated |
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17 herein by reference. Drivers based on or derived from this |
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18 code fall under the GPL and must retain the authorship, |
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19 copyright and license notice. This file is not a complete |
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20 program and may only be used when the entire operating |
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21 system is licensed under the GPL. |
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22 |
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23 This driver is for boards based on the RTL8129 and RTL8139 |
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24 PCI ethernet chips. |
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25 |
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26 The author may be reached as becker@scyld.com, or C/O Scyld |
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27 Computing Corporation 410 Severn Ave., Suite 210 Annapolis |
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28 MD 21403 |
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29 |
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30 Support and updates available at |
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31 http://www.scyld.com/network/rtl8139.html |
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32 |
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33 Twister-tuning table provided by Kinston |
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34 <shangh@realtek.com.tw>. |
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35 |
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36 -----<snip>----- |
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37 |
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38 This software may be used and distributed according to the terms |
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39 of the GNU General Public License, incorporated herein by reference. |
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40 |
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41 Contributors: |
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42 |
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43 Donald Becker - he wrote the original driver, kudos to him! |
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44 (but please don't e-mail him for support, this isn't his driver) |
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45 |
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46 Tigran Aivazian - bug fixes, skbuff free cleanup |
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47 |
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48 Martin Mares - suggestions for PCI cleanup |
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49 |
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50 David S. Miller - PCI DMA and softnet updates |
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51 |
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52 Ernst Gill - fixes ported from BSD driver |
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53 |
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54 Daniel Kobras - identified specific locations of |
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55 posted MMIO write bugginess |
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56 |
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57 Gerard Sharp - bug fix, testing and feedback |
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58 |
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59 David Ford - Rx ring wrap fix |
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60 |
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61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me |
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62 to find and fix a crucial bug on older chipsets. |
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63 |
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64 Donald Becker/Chris Butterworth/Marcus Westergren - |
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65 Noticed various Rx packet size-related buglets. |
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66 |
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67 Santiago Garcia Mantinan - testing and feedback |
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68 |
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69 Jens David - 2.2.x kernel backports |
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70 |
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71 Martin Dennett - incredibly helpful insight on undocumented |
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72 features of the 8139 chips |
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73 |
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74 Jean-Jacques Michel - bug fix |
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75 |
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76 Tobias Ringström - Rx interrupt status checking suggestion |
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77 |
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78 Andrew Morton - Clear blocked signals, avoid |
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79 buffer overrun setting current->comm. |
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80 |
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81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls |
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82 |
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83 Robert Kuebel - Save kernel thread from dying on any signal. |
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84 |
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85 Submitting bug reports: |
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86 |
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87 "rtl8139-diag -mmmaaavvveefN" output |
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88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log |
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89 |
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90 */ |
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91 |
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92 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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93 |
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94 #define DRV_NAME "8139too" |
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95 #define DRV_VERSION "0.9.28" |
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96 |
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97 |
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98 #include <linux/module.h> |
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99 #include <linux/kernel.h> |
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100 #include <linux/compiler.h> |
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101 #include <linux/pci.h> |
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102 #include <linux/init.h> |
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103 #include <linux/interrupt.h> |
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104 #include <linux/netdevice.h> |
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105 #include <linux/etherdevice.h> |
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106 #include <linux/rtnetlink.h> |
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107 #include <linux/delay.h> |
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108 #include <linux/ethtool.h> |
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109 #include <linux/mii.h> |
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110 #include <linux/completion.h> |
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111 #include <linux/crc32.h> |
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112 #include <linux/io.h> |
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113 #include <linux/uaccess.h> |
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114 #include <linux/gfp.h> |
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115 #include <asm/irq.h> |
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116 |
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117 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION |
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118 |
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119 /* Default Message level */ |
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120 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ |
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121 NETIF_MSG_PROBE | \ |
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122 NETIF_MSG_LINK) |
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123 |
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124 |
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125 /* define to 1, 2 or 3 to enable copious debugging info */ |
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126 #define RTL8139_DEBUG 0 |
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127 |
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128 /* define to 1 to disable lightweight runtime debugging checks */ |
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129 #undef RTL8139_NDEBUG |
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130 |
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131 |
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132 #ifdef RTL8139_NDEBUG |
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133 # define assert(expr) do {} while (0) |
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134 #else |
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135 # define assert(expr) \ |
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136 if (unlikely(!(expr))) { \ |
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137 pr_err("Assertion failed! %s,%s,%s,line=%d\n", \ |
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138 #expr, __FILE__, __func__, __LINE__); \ |
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139 } |
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140 #endif |
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141 |
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142 |
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143 /* A few user-configurable values. */ |
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144 /* media options */ |
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145 #define MAX_UNITS 8 |
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146 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
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147 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
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148 |
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149 /* Whether to use MMIO or PIO. Default to MMIO. */ |
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150 #ifdef CONFIG_8139TOO_PIO |
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151 static int use_io = 1; |
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152 #else |
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153 static int use_io = 0; |
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154 #endif |
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155 |
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156 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). |
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157 The RTL chips use a 64 element hash table based on the Ethernet CRC. */ |
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158 static int multicast_filter_limit = 32; |
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159 |
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160 /* bitmapped message enable number */ |
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161 static int debug = -1; |
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162 |
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163 /* |
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164 * Receive ring size |
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165 * Warning: 64K ring has hardware issues and may lock up. |
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166 */ |
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167 #if defined(CONFIG_SH_DREAMCAST) |
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168 #define RX_BUF_IDX 0 /* 8K ring */ |
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169 #else |
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170 #define RX_BUF_IDX 2 /* 32K ring */ |
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171 #endif |
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172 #define RX_BUF_LEN (8192 << RX_BUF_IDX) |
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173 #define RX_BUF_PAD 16 |
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174 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */ |
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175 |
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176 #if RX_BUF_LEN == 65536 |
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177 #define RX_BUF_TOT_LEN RX_BUF_LEN |
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178 #else |
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179 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD) |
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180 #endif |
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181 |
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182 /* Number of Tx descriptor registers. */ |
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183 #define NUM_TX_DESC 4 |
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184 |
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185 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ |
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186 #define MAX_ETH_FRAME_SIZE 1536 |
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187 |
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188 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ |
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189 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE |
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190 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) |
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191 |
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192 /* PCI Tuning Parameters |
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193 Threshold is bytes transferred to chip before transmission starts. */ |
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194 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */ |
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195 |
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196 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ |
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197 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */ |
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198 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */ |
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199 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ |
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200 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */ |
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201 |
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202 /* Operational parameters that usually are not changed. */ |
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203 /* Time in jiffies before concluding the transmitter is hung. */ |
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204 #define TX_TIMEOUT (6*HZ) |
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205 |
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206 |
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207 enum { |
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208 HAS_MII_XCVR = 0x010000, |
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209 HAS_CHIP_XCVR = 0x020000, |
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210 HAS_LNK_CHNG = 0x040000, |
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211 }; |
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212 |
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213 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */ |
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214 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */ |
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215 #define RTL_MIN_IO_SIZE 0x80 |
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216 #define RTL8139B_IO_SIZE 256 |
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217 |
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218 #define RTL8129_CAPS HAS_MII_XCVR |
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219 #define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG) |
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220 |
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221 typedef enum { |
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222 RTL8139 = 0, |
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223 RTL8129, |
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224 } board_t; |
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225 |
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226 |
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227 /* indexed by board_t, above */ |
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228 static const struct { |
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229 const char *name; |
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230 u32 hw_flags; |
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231 } board_info[] __devinitdata = { |
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232 { "RealTek RTL8139", RTL8139_CAPS }, |
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233 { "RealTek RTL8129", RTL8129_CAPS }, |
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234 }; |
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235 |
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236 |
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237 static DEFINE_PCI_DEVICE_TABLE(rtl8139_pci_tbl) = { |
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238 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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239 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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240 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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241 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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242 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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243 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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244 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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245 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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246 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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247 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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248 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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249 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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250 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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251 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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252 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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253 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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254 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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255 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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256 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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257 |
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258 #ifdef CONFIG_SH_SECUREEDGE5410 |
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259 /* Bogus 8139 silicon reports 8129 without external PROM :-( */ |
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260 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
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261 #endif |
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262 #ifdef CONFIG_8139TOO_8129 |
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263 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 }, |
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264 #endif |
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265 |
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266 /* some crazy cards report invalid vendor ids like |
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267 * 0x0001 here. The other ids are valid and constant, |
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268 * so we simply don't match on the main vendor id. |
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269 */ |
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270 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 }, |
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271 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 }, |
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272 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 }, |
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273 |
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274 {0,} |
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275 }; |
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276 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl); |
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277 |
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278 static struct { |
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279 const char str[ETH_GSTRING_LEN]; |
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280 } ethtool_stats_keys[] = { |
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281 { "early_rx" }, |
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282 { "tx_buf_mapped" }, |
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283 { "tx_timeouts" }, |
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284 { "rx_lost_in_ring" }, |
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285 }; |
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286 |
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287 /* The rest of these values should never change. */ |
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288 |
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289 /* Symbolic offsets to registers. */ |
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290 enum RTL8139_registers { |
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291 MAC0 = 0, /* Ethernet hardware address. */ |
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292 MAR0 = 8, /* Multicast filter. */ |
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293 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */ |
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294 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */ |
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295 RxBuf = 0x30, |
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296 ChipCmd = 0x37, |
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297 RxBufPtr = 0x38, |
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298 RxBufAddr = 0x3A, |
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299 IntrMask = 0x3C, |
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300 IntrStatus = 0x3E, |
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301 TxConfig = 0x40, |
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302 RxConfig = 0x44, |
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303 Timer = 0x48, /* A general-purpose counter. */ |
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304 RxMissed = 0x4C, /* 24 bits valid, write clears. */ |
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305 Cfg9346 = 0x50, |
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306 Config0 = 0x51, |
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307 Config1 = 0x52, |
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308 TimerInt = 0x54, |
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309 MediaStatus = 0x58, |
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310 Config3 = 0x59, |
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311 Config4 = 0x5A, /* absent on RTL-8139A */ |
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312 HltClk = 0x5B, |
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313 MultiIntr = 0x5C, |
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314 TxSummary = 0x60, |
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315 BasicModeCtrl = 0x62, |
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316 BasicModeStatus = 0x64, |
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317 NWayAdvert = 0x66, |
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318 NWayLPAR = 0x68, |
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319 NWayExpansion = 0x6A, |
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320 /* Undocumented registers, but required for proper operation. */ |
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321 FIFOTMS = 0x70, /* FIFO Control and test. */ |
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322 CSCR = 0x74, /* Chip Status and Configuration Register. */ |
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323 PARA78 = 0x78, |
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324 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */ |
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325 PARA7c = 0x7c, /* Magic transceiver parameter register. */ |
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326 Config5 = 0xD8, /* absent on RTL-8139A */ |
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327 }; |
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328 |
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329 enum ClearBitMasks { |
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330 MultiIntrClear = 0xF000, |
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331 ChipCmdClear = 0xE2, |
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332 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1), |
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333 }; |
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334 |
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335 enum ChipCmdBits { |
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336 CmdReset = 0x10, |
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337 CmdRxEnb = 0x08, |
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338 CmdTxEnb = 0x04, |
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339 RxBufEmpty = 0x01, |
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340 }; |
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341 |
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342 /* Interrupt register bits, using my own meaningful names. */ |
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343 enum IntrStatusBits { |
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344 PCIErr = 0x8000, |
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345 PCSTimeout = 0x4000, |
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346 RxFIFOOver = 0x40, |
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347 RxUnderrun = 0x20, |
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348 RxOverflow = 0x10, |
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349 TxErr = 0x08, |
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350 TxOK = 0x04, |
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351 RxErr = 0x02, |
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352 RxOK = 0x01, |
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353 |
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354 RxAckBits = RxFIFOOver | RxOverflow | RxOK, |
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355 }; |
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356 |
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357 enum TxStatusBits { |
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358 TxHostOwns = 0x2000, |
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359 TxUnderrun = 0x4000, |
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360 TxStatOK = 0x8000, |
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361 TxOutOfWindow = 0x20000000, |
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362 TxAborted = 0x40000000, |
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363 TxCarrierLost = 0x80000000, |
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364 }; |
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365 enum RxStatusBits { |
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366 RxMulticast = 0x8000, |
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367 RxPhysical = 0x4000, |
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368 RxBroadcast = 0x2000, |
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369 RxBadSymbol = 0x0020, |
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370 RxRunt = 0x0010, |
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371 RxTooLong = 0x0008, |
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372 RxCRCErr = 0x0004, |
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373 RxBadAlign = 0x0002, |
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374 RxStatusOK = 0x0001, |
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375 }; |
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376 |
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377 /* Bits in RxConfig. */ |
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378 enum rx_mode_bits { |
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379 AcceptErr = 0x20, |
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380 AcceptRunt = 0x10, |
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381 AcceptBroadcast = 0x08, |
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382 AcceptMulticast = 0x04, |
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383 AcceptMyPhys = 0x02, |
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384 AcceptAllPhys = 0x01, |
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385 }; |
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386 |
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387 /* Bits in TxConfig. */ |
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388 enum tx_config_bits { |
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389 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */ |
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390 TxIFGShift = 24, |
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391 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */ |
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392 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */ |
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393 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */ |
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394 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */ |
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395 |
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396 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */ |
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397 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */ |
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398 TxClearAbt = (1 << 0), /* Clear abort (WO) */ |
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399 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */ |
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400 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */ |
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401 |
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402 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */ |
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403 }; |
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404 |
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405 /* Bits in Config1 */ |
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406 enum Config1Bits { |
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407 Cfg1_PM_Enable = 0x01, |
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408 Cfg1_VPD_Enable = 0x02, |
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409 Cfg1_PIO = 0x04, |
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410 Cfg1_MMIO = 0x08, |
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411 LWAKE = 0x10, /* not on 8139, 8139A */ |
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412 Cfg1_Driver_Load = 0x20, |
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413 Cfg1_LED0 = 0x40, |
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414 Cfg1_LED1 = 0x80, |
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415 SLEEP = (1 << 1), /* only on 8139, 8139A */ |
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416 PWRDN = (1 << 0), /* only on 8139, 8139A */ |
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417 }; |
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418 |
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419 /* Bits in Config3 */ |
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420 enum Config3Bits { |
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421 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */ |
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422 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */ |
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423 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */ |
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424 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */ |
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425 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */ |
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426 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */ |
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427 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */ |
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428 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */ |
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429 }; |
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430 |
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431 /* Bits in Config4 */ |
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432 enum Config4Bits { |
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433 LWPTN = (1 << 2), /* not on 8139, 8139A */ |
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434 }; |
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435 |
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436 /* Bits in Config5 */ |
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437 enum Config5Bits { |
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438 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */ |
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439 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */ |
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440 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */ |
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441 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */ |
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442 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */ |
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443 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */ |
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444 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */ |
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445 }; |
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446 |
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447 enum RxConfigBits { |
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448 /* rx fifo threshold */ |
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449 RxCfgFIFOShift = 13, |
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450 RxCfgFIFONone = (7 << RxCfgFIFOShift), |
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451 |
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452 /* Max DMA burst */ |
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453 RxCfgDMAShift = 8, |
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454 RxCfgDMAUnlimited = (7 << RxCfgDMAShift), |
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455 |
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456 /* rx ring buffer length */ |
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457 RxCfgRcv8K = 0, |
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458 RxCfgRcv16K = (1 << 11), |
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459 RxCfgRcv32K = (1 << 12), |
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460 RxCfgRcv64K = (1 << 11) | (1 << 12), |
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461 |
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462 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */ |
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463 RxNoWrap = (1 << 7), |
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464 }; |
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465 |
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466 /* Twister tuning parameters from RealTek. |
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467 Completely undocumented, but required to tune bad links on some boards. */ |
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468 enum CSCRBits { |
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469 CSCR_LinkOKBit = 0x0400, |
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470 CSCR_LinkChangeBit = 0x0800, |
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471 CSCR_LinkStatusBits = 0x0f000, |
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472 CSCR_LinkDownOffCmd = 0x003c0, |
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473 CSCR_LinkDownCmd = 0x0f3c0, |
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474 }; |
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475 |
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476 enum Cfg9346Bits { |
|
477 Cfg9346_Lock = 0x00, |
|
478 Cfg9346_Unlock = 0xC0, |
|
479 }; |
|
480 |
|
481 typedef enum { |
|
482 CH_8139 = 0, |
|
483 CH_8139_K, |
|
484 CH_8139A, |
|
485 CH_8139A_G, |
|
486 CH_8139B, |
|
487 CH_8130, |
|
488 CH_8139C, |
|
489 CH_8100, |
|
490 CH_8100B_8139D, |
|
491 CH_8101, |
|
492 } chip_t; |
|
493 |
|
494 enum chip_flags { |
|
495 HasHltClk = (1 << 0), |
|
496 HasLWake = (1 << 1), |
|
497 }; |
|
498 |
|
499 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \ |
|
500 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22) |
|
501 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1) |
|
502 |
|
503 /* directly indexed by chip_t, above */ |
|
504 static const struct { |
|
505 const char *name; |
|
506 u32 version; /* from RTL8139C/RTL8139D docs */ |
|
507 u32 flags; |
|
508 } rtl_chip_info[] = { |
|
509 { "RTL-8139", |
|
510 HW_REVID(1, 0, 0, 0, 0, 0, 0), |
|
511 HasHltClk, |
|
512 }, |
|
513 |
|
514 { "RTL-8139 rev K", |
|
515 HW_REVID(1, 1, 0, 0, 0, 0, 0), |
|
516 HasHltClk, |
|
517 }, |
|
518 |
|
519 { "RTL-8139A", |
|
520 HW_REVID(1, 1, 1, 0, 0, 0, 0), |
|
521 HasHltClk, /* XXX undocumented? */ |
|
522 }, |
|
523 |
|
524 { "RTL-8139A rev G", |
|
525 HW_REVID(1, 1, 1, 0, 0, 1, 0), |
|
526 HasHltClk, /* XXX undocumented? */ |
|
527 }, |
|
528 |
|
529 { "RTL-8139B", |
|
530 HW_REVID(1, 1, 1, 1, 0, 0, 0), |
|
531 HasLWake, |
|
532 }, |
|
533 |
|
534 { "RTL-8130", |
|
535 HW_REVID(1, 1, 1, 1, 1, 0, 0), |
|
536 HasLWake, |
|
537 }, |
|
538 |
|
539 { "RTL-8139C", |
|
540 HW_REVID(1, 1, 1, 0, 1, 0, 0), |
|
541 HasLWake, |
|
542 }, |
|
543 |
|
544 { "RTL-8100", |
|
545 HW_REVID(1, 1, 1, 1, 0, 1, 0), |
|
546 HasLWake, |
|
547 }, |
|
548 |
|
549 { "RTL-8100B/8139D", |
|
550 HW_REVID(1, 1, 1, 0, 1, 0, 1), |
|
551 HasHltClk /* XXX undocumented? */ |
|
552 | HasLWake, |
|
553 }, |
|
554 |
|
555 { "RTL-8101", |
|
556 HW_REVID(1, 1, 1, 0, 1, 1, 1), |
|
557 HasLWake, |
|
558 }, |
|
559 }; |
|
560 |
|
561 struct rtl_extra_stats { |
|
562 unsigned long early_rx; |
|
563 unsigned long tx_buf_mapped; |
|
564 unsigned long tx_timeouts; |
|
565 unsigned long rx_lost_in_ring; |
|
566 }; |
|
567 |
|
568 struct rtl8139_stats { |
|
569 u64 packets; |
|
570 u64 bytes; |
|
571 struct u64_stats_sync syncp; |
|
572 }; |
|
573 |
|
574 struct rtl8139_private { |
|
575 void __iomem *mmio_addr; |
|
576 int drv_flags; |
|
577 struct pci_dev *pci_dev; |
|
578 u32 msg_enable; |
|
579 struct napi_struct napi; |
|
580 struct net_device *dev; |
|
581 |
|
582 unsigned char *rx_ring; |
|
583 unsigned int cur_rx; /* RX buf index of next pkt */ |
|
584 struct rtl8139_stats rx_stats; |
|
585 dma_addr_t rx_ring_dma; |
|
586 |
|
587 unsigned int tx_flag; |
|
588 unsigned long cur_tx; |
|
589 unsigned long dirty_tx; |
|
590 struct rtl8139_stats tx_stats; |
|
591 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */ |
|
592 unsigned char *tx_bufs; /* Tx bounce buffer region. */ |
|
593 dma_addr_t tx_bufs_dma; |
|
594 |
|
595 signed char phys[4]; /* MII device addresses. */ |
|
596 |
|
597 /* Twister tune state. */ |
|
598 char twistie, twist_row, twist_col; |
|
599 |
|
600 unsigned int watchdog_fired : 1; |
|
601 unsigned int default_port : 4; /* Last dev->if_port value. */ |
|
602 unsigned int have_thread : 1; |
|
603 |
|
604 spinlock_t lock; |
|
605 spinlock_t rx_lock; |
|
606 |
|
607 chip_t chipset; |
|
608 u32 rx_config; |
|
609 struct rtl_extra_stats xstats; |
|
610 |
|
611 struct delayed_work thread; |
|
612 |
|
613 struct mii_if_info mii; |
|
614 unsigned int regs_len; |
|
615 unsigned long fifo_copy_timeout; |
|
616 }; |
|
617 |
|
618 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>"); |
|
619 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver"); |
|
620 MODULE_LICENSE("GPL"); |
|
621 MODULE_VERSION(DRV_VERSION); |
|
622 |
|
623 module_param(use_io, int, 0); |
|
624 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO"); |
|
625 module_param(multicast_filter_limit, int, 0); |
|
626 module_param_array(media, int, NULL, 0); |
|
627 module_param_array(full_duplex, int, NULL, 0); |
|
628 module_param(debug, int, 0); |
|
629 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number"); |
|
630 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses"); |
|
631 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps"); |
|
632 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)"); |
|
633 |
|
634 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len); |
|
635 static int rtl8139_open (struct net_device *dev); |
|
636 static int mdio_read (struct net_device *dev, int phy_id, int location); |
|
637 static void mdio_write (struct net_device *dev, int phy_id, int location, |
|
638 int val); |
|
639 static void rtl8139_start_thread(struct rtl8139_private *tp); |
|
640 static void rtl8139_tx_timeout (struct net_device *dev); |
|
641 static void rtl8139_init_ring (struct net_device *dev); |
|
642 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb, |
|
643 struct net_device *dev); |
|
644 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
645 static void rtl8139_poll_controller(struct net_device *dev); |
|
646 #endif |
|
647 static int rtl8139_set_mac_address(struct net_device *dev, void *p); |
|
648 static int rtl8139_poll(struct napi_struct *napi, int budget); |
|
649 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance); |
|
650 static int rtl8139_close (struct net_device *dev); |
|
651 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd); |
|
652 static struct rtnl_link_stats64 *rtl8139_get_stats64(struct net_device *dev, |
|
653 struct rtnl_link_stats64 |
|
654 *stats); |
|
655 static void rtl8139_set_rx_mode (struct net_device *dev); |
|
656 static void __set_rx_mode (struct net_device *dev); |
|
657 static void rtl8139_hw_start (struct net_device *dev); |
|
658 static void rtl8139_thread (struct work_struct *work); |
|
659 static void rtl8139_tx_timeout_task(struct work_struct *work); |
|
660 static const struct ethtool_ops rtl8139_ethtool_ops; |
|
661 |
|
662 /* write MMIO register, with flush */ |
|
663 /* Flush avoids rtl8139 bug w/ posted MMIO writes */ |
|
664 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0) |
|
665 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0) |
|
666 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0) |
|
667 |
|
668 /* write MMIO register */ |
|
669 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg)) |
|
670 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg)) |
|
671 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg)) |
|
672 |
|
673 /* read MMIO register */ |
|
674 #define RTL_R8(reg) ioread8 (ioaddr + (reg)) |
|
675 #define RTL_R16(reg) ioread16 (ioaddr + (reg)) |
|
676 #define RTL_R32(reg) ioread32 (ioaddr + (reg)) |
|
677 |
|
678 |
|
679 static const u16 rtl8139_intr_mask = |
|
680 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver | |
|
681 TxErr | TxOK | RxErr | RxOK; |
|
682 |
|
683 static const u16 rtl8139_norx_intr_mask = |
|
684 PCIErr | PCSTimeout | RxUnderrun | |
|
685 TxErr | TxOK | RxErr ; |
|
686 |
|
687 #if RX_BUF_IDX == 0 |
|
688 static const unsigned int rtl8139_rx_config = |
|
689 RxCfgRcv8K | RxNoWrap | |
|
690 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
691 (RX_DMA_BURST << RxCfgDMAShift); |
|
692 #elif RX_BUF_IDX == 1 |
|
693 static const unsigned int rtl8139_rx_config = |
|
694 RxCfgRcv16K | RxNoWrap | |
|
695 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
696 (RX_DMA_BURST << RxCfgDMAShift); |
|
697 #elif RX_BUF_IDX == 2 |
|
698 static const unsigned int rtl8139_rx_config = |
|
699 RxCfgRcv32K | RxNoWrap | |
|
700 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
701 (RX_DMA_BURST << RxCfgDMAShift); |
|
702 #elif RX_BUF_IDX == 3 |
|
703 static const unsigned int rtl8139_rx_config = |
|
704 RxCfgRcv64K | |
|
705 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
706 (RX_DMA_BURST << RxCfgDMAShift); |
|
707 #else |
|
708 #error "Invalid configuration for 8139_RXBUF_IDX" |
|
709 #endif |
|
710 |
|
711 static const unsigned int rtl8139_tx_config = |
|
712 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift); |
|
713 |
|
714 static void __rtl8139_cleanup_dev (struct net_device *dev) |
|
715 { |
|
716 struct rtl8139_private *tp = netdev_priv(dev); |
|
717 struct pci_dev *pdev; |
|
718 |
|
719 assert (dev != NULL); |
|
720 assert (tp->pci_dev != NULL); |
|
721 pdev = tp->pci_dev; |
|
722 |
|
723 if (tp->mmio_addr) |
|
724 pci_iounmap (pdev, tp->mmio_addr); |
|
725 |
|
726 /* it's ok to call this even if we have no regions to free */ |
|
727 pci_release_regions (pdev); |
|
728 |
|
729 free_netdev(dev); |
|
730 pci_set_drvdata (pdev, NULL); |
|
731 } |
|
732 |
|
733 |
|
734 static void rtl8139_chip_reset (void __iomem *ioaddr) |
|
735 { |
|
736 int i; |
|
737 |
|
738 /* Soft reset the chip. */ |
|
739 RTL_W8 (ChipCmd, CmdReset); |
|
740 |
|
741 /* Check that the chip has finished the reset. */ |
|
742 for (i = 1000; i > 0; i--) { |
|
743 barrier(); |
|
744 if ((RTL_R8 (ChipCmd) & CmdReset) == 0) |
|
745 break; |
|
746 udelay (10); |
|
747 } |
|
748 } |
|
749 |
|
750 |
|
751 static __devinit struct net_device * rtl8139_init_board (struct pci_dev *pdev) |
|
752 { |
|
753 void __iomem *ioaddr; |
|
754 struct net_device *dev; |
|
755 struct rtl8139_private *tp; |
|
756 u8 tmp8; |
|
757 int rc, disable_dev_on_err = 0; |
|
758 unsigned int i; |
|
759 unsigned long pio_start, pio_end, pio_flags, pio_len; |
|
760 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len; |
|
761 u32 version; |
|
762 |
|
763 assert (pdev != NULL); |
|
764 |
|
765 /* dev and priv zeroed in alloc_etherdev */ |
|
766 dev = alloc_etherdev (sizeof (*tp)); |
|
767 if (dev == NULL) |
|
768 return ERR_PTR(-ENOMEM); |
|
769 |
|
770 SET_NETDEV_DEV(dev, &pdev->dev); |
|
771 |
|
772 tp = netdev_priv(dev); |
|
773 tp->pci_dev = pdev; |
|
774 |
|
775 /* enable device (incl. PCI PM wakeup and hotplug setup) */ |
|
776 rc = pci_enable_device (pdev); |
|
777 if (rc) |
|
778 goto err_out; |
|
779 |
|
780 pio_start = pci_resource_start (pdev, 0); |
|
781 pio_end = pci_resource_end (pdev, 0); |
|
782 pio_flags = pci_resource_flags (pdev, 0); |
|
783 pio_len = pci_resource_len (pdev, 0); |
|
784 |
|
785 mmio_start = pci_resource_start (pdev, 1); |
|
786 mmio_end = pci_resource_end (pdev, 1); |
|
787 mmio_flags = pci_resource_flags (pdev, 1); |
|
788 mmio_len = pci_resource_len (pdev, 1); |
|
789 |
|
790 /* set this immediately, we need to know before |
|
791 * we talk to the chip directly */ |
|
792 pr_debug("PIO region size == 0x%02lX\n", pio_len); |
|
793 pr_debug("MMIO region size == 0x%02lX\n", mmio_len); |
|
794 |
|
795 retry: |
|
796 if (use_io) { |
|
797 /* make sure PCI base addr 0 is PIO */ |
|
798 if (!(pio_flags & IORESOURCE_IO)) { |
|
799 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n"); |
|
800 rc = -ENODEV; |
|
801 goto err_out; |
|
802 } |
|
803 /* check for weird/broken PCI region reporting */ |
|
804 if (pio_len < RTL_MIN_IO_SIZE) { |
|
805 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n"); |
|
806 rc = -ENODEV; |
|
807 goto err_out; |
|
808 } |
|
809 } else { |
|
810 /* make sure PCI base addr 1 is MMIO */ |
|
811 if (!(mmio_flags & IORESOURCE_MEM)) { |
|
812 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n"); |
|
813 rc = -ENODEV; |
|
814 goto err_out; |
|
815 } |
|
816 if (mmio_len < RTL_MIN_IO_SIZE) { |
|
817 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n"); |
|
818 rc = -ENODEV; |
|
819 goto err_out; |
|
820 } |
|
821 } |
|
822 |
|
823 rc = pci_request_regions (pdev, DRV_NAME); |
|
824 if (rc) |
|
825 goto err_out; |
|
826 disable_dev_on_err = 1; |
|
827 |
|
828 /* enable PCI bus-mastering */ |
|
829 pci_set_master (pdev); |
|
830 |
|
831 if (use_io) { |
|
832 ioaddr = pci_iomap(pdev, 0, 0); |
|
833 if (!ioaddr) { |
|
834 dev_err(&pdev->dev, "cannot map PIO, aborting\n"); |
|
835 rc = -EIO; |
|
836 goto err_out; |
|
837 } |
|
838 dev->base_addr = pio_start; |
|
839 tp->regs_len = pio_len; |
|
840 } else { |
|
841 /* ioremap MMIO region */ |
|
842 ioaddr = pci_iomap(pdev, 1, 0); |
|
843 if (ioaddr == NULL) { |
|
844 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n"); |
|
845 pci_release_regions(pdev); |
|
846 use_io = 1; |
|
847 goto retry; |
|
848 } |
|
849 dev->base_addr = (long) ioaddr; |
|
850 tp->regs_len = mmio_len; |
|
851 } |
|
852 tp->mmio_addr = ioaddr; |
|
853 |
|
854 /* Bring old chips out of low-power mode. */ |
|
855 RTL_W8 (HltClk, 'R'); |
|
856 |
|
857 /* check for missing/broken hardware */ |
|
858 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) { |
|
859 dev_err(&pdev->dev, "Chip not responding, ignoring board\n"); |
|
860 rc = -EIO; |
|
861 goto err_out; |
|
862 } |
|
863 |
|
864 /* identify chip attached to board */ |
|
865 version = RTL_R32 (TxConfig) & HW_REVID_MASK; |
|
866 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++) |
|
867 if (version == rtl_chip_info[i].version) { |
|
868 tp->chipset = i; |
|
869 goto match; |
|
870 } |
|
871 |
|
872 /* if unknown chip, assume array element #0, original RTL-8139 in this case */ |
|
873 i = 0; |
|
874 dev_dbg(&pdev->dev, "unknown chip version, assuming RTL-8139\n"); |
|
875 dev_dbg(&pdev->dev, "TxConfig = 0x%x\n", RTL_R32 (TxConfig)); |
|
876 tp->chipset = 0; |
|
877 |
|
878 match: |
|
879 pr_debug("chipset id (%d) == index %d, '%s'\n", |
|
880 version, i, rtl_chip_info[i].name); |
|
881 |
|
882 if (tp->chipset >= CH_8139B) { |
|
883 u8 new_tmp8 = tmp8 = RTL_R8 (Config1); |
|
884 pr_debug("PCI PM wakeup\n"); |
|
885 if ((rtl_chip_info[tp->chipset].flags & HasLWake) && |
|
886 (tmp8 & LWAKE)) |
|
887 new_tmp8 &= ~LWAKE; |
|
888 new_tmp8 |= Cfg1_PM_Enable; |
|
889 if (new_tmp8 != tmp8) { |
|
890 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
891 RTL_W8 (Config1, tmp8); |
|
892 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
893 } |
|
894 if (rtl_chip_info[tp->chipset].flags & HasLWake) { |
|
895 tmp8 = RTL_R8 (Config4); |
|
896 if (tmp8 & LWPTN) { |
|
897 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
898 RTL_W8 (Config4, tmp8 & ~LWPTN); |
|
899 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
900 } |
|
901 } |
|
902 } else { |
|
903 pr_debug("Old chip wakeup\n"); |
|
904 tmp8 = RTL_R8 (Config1); |
|
905 tmp8 &= ~(SLEEP | PWRDN); |
|
906 RTL_W8 (Config1, tmp8); |
|
907 } |
|
908 |
|
909 rtl8139_chip_reset (ioaddr); |
|
910 |
|
911 return dev; |
|
912 |
|
913 err_out: |
|
914 __rtl8139_cleanup_dev (dev); |
|
915 if (disable_dev_on_err) |
|
916 pci_disable_device (pdev); |
|
917 return ERR_PTR(rc); |
|
918 } |
|
919 |
|
920 static int rtl8139_set_features(struct net_device *dev, netdev_features_t features) |
|
921 { |
|
922 struct rtl8139_private *tp = netdev_priv(dev); |
|
923 unsigned long flags; |
|
924 netdev_features_t changed = features ^ dev->features; |
|
925 void __iomem *ioaddr = tp->mmio_addr; |
|
926 |
|
927 if (!(changed & (NETIF_F_RXALL))) |
|
928 return 0; |
|
929 |
|
930 spin_lock_irqsave(&tp->lock, flags); |
|
931 |
|
932 if (changed & NETIF_F_RXALL) { |
|
933 int rx_mode = tp->rx_config; |
|
934 if (features & NETIF_F_RXALL) |
|
935 rx_mode |= (AcceptErr | AcceptRunt); |
|
936 else |
|
937 rx_mode &= ~(AcceptErr | AcceptRunt); |
|
938 tp->rx_config = rtl8139_rx_config | rx_mode; |
|
939 RTL_W32_F(RxConfig, tp->rx_config); |
|
940 } |
|
941 |
|
942 spin_unlock_irqrestore(&tp->lock, flags); |
|
943 |
|
944 return 0; |
|
945 } |
|
946 |
|
947 static const struct net_device_ops rtl8139_netdev_ops = { |
|
948 .ndo_open = rtl8139_open, |
|
949 .ndo_stop = rtl8139_close, |
|
950 .ndo_get_stats64 = rtl8139_get_stats64, |
|
951 .ndo_change_mtu = eth_change_mtu, |
|
952 .ndo_validate_addr = eth_validate_addr, |
|
953 .ndo_set_mac_address = rtl8139_set_mac_address, |
|
954 .ndo_start_xmit = rtl8139_start_xmit, |
|
955 .ndo_set_rx_mode = rtl8139_set_rx_mode, |
|
956 .ndo_do_ioctl = netdev_ioctl, |
|
957 .ndo_tx_timeout = rtl8139_tx_timeout, |
|
958 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
959 .ndo_poll_controller = rtl8139_poll_controller, |
|
960 #endif |
|
961 .ndo_set_features = rtl8139_set_features, |
|
962 }; |
|
963 |
|
964 static int __devinit rtl8139_init_one (struct pci_dev *pdev, |
|
965 const struct pci_device_id *ent) |
|
966 { |
|
967 struct net_device *dev = NULL; |
|
968 struct rtl8139_private *tp; |
|
969 int i, addr_len, option; |
|
970 void __iomem *ioaddr; |
|
971 static int board_idx = -1; |
|
972 |
|
973 assert (pdev != NULL); |
|
974 assert (ent != NULL); |
|
975 |
|
976 board_idx++; |
|
977 |
|
978 /* when we're built into the kernel, the driver version message |
|
979 * is only printed if at least one 8139 board has been found |
|
980 */ |
|
981 #ifndef MODULE |
|
982 { |
|
983 static int printed_version; |
|
984 if (!printed_version++) |
|
985 pr_info(RTL8139_DRIVER_NAME "\n"); |
|
986 } |
|
987 #endif |
|
988 |
|
989 if (pdev->vendor == PCI_VENDOR_ID_REALTEK && |
|
990 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) { |
|
991 dev_info(&pdev->dev, |
|
992 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n", |
|
993 pdev->vendor, pdev->device, pdev->revision); |
|
994 return -ENODEV; |
|
995 } |
|
996 |
|
997 if (pdev->vendor == PCI_VENDOR_ID_REALTEK && |
|
998 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && |
|
999 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS && |
|
1000 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) { |
|
1001 pr_info("OQO Model 2 detected. Forcing PIO\n"); |
|
1002 use_io = 1; |
|
1003 } |
|
1004 |
|
1005 dev = rtl8139_init_board (pdev); |
|
1006 if (IS_ERR(dev)) |
|
1007 return PTR_ERR(dev); |
|
1008 |
|
1009 assert (dev != NULL); |
|
1010 tp = netdev_priv(dev); |
|
1011 tp->dev = dev; |
|
1012 |
|
1013 ioaddr = tp->mmio_addr; |
|
1014 assert (ioaddr != NULL); |
|
1015 |
|
1016 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6; |
|
1017 for (i = 0; i < 3; i++) |
|
1018 ((__le16 *) (dev->dev_addr))[i] = |
|
1019 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len)); |
|
1020 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
|
1021 |
|
1022 /* The Rtl8139-specific entries in the device structure. */ |
|
1023 dev->netdev_ops = &rtl8139_netdev_ops; |
|
1024 dev->ethtool_ops = &rtl8139_ethtool_ops; |
|
1025 dev->watchdog_timeo = TX_TIMEOUT; |
|
1026 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64); |
|
1027 |
|
1028 /* note: the hardware is not capable of sg/csum/highdma, however |
|
1029 * through the use of skb_copy_and_csum_dev we enable these |
|
1030 * features |
|
1031 */ |
|
1032 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA; |
|
1033 dev->vlan_features = dev->features; |
|
1034 |
|
1035 dev->hw_features |= NETIF_F_RXALL; |
|
1036 dev->hw_features |= NETIF_F_RXFCS; |
|
1037 |
|
1038 dev->irq = pdev->irq; |
|
1039 |
|
1040 /* tp zeroed and aligned in alloc_etherdev */ |
|
1041 tp = netdev_priv(dev); |
|
1042 |
|
1043 /* note: tp->chipset set in rtl8139_init_board */ |
|
1044 tp->drv_flags = board_info[ent->driver_data].hw_flags; |
|
1045 tp->mmio_addr = ioaddr; |
|
1046 tp->msg_enable = |
|
1047 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1)); |
|
1048 spin_lock_init (&tp->lock); |
|
1049 spin_lock_init (&tp->rx_lock); |
|
1050 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread); |
|
1051 tp->mii.dev = dev; |
|
1052 tp->mii.mdio_read = mdio_read; |
|
1053 tp->mii.mdio_write = mdio_write; |
|
1054 tp->mii.phy_id_mask = 0x3f; |
|
1055 tp->mii.reg_num_mask = 0x1f; |
|
1056 |
|
1057 /* dev is fully set up and ready to use now */ |
|
1058 pr_debug("about to register device named %s (%p)...\n", |
|
1059 dev->name, dev); |
|
1060 i = register_netdev (dev); |
|
1061 if (i) goto err_out; |
|
1062 |
|
1063 pci_set_drvdata (pdev, dev); |
|
1064 |
|
1065 netdev_info(dev, "%s at 0x%lx, %pM, IRQ %d\n", |
|
1066 board_info[ent->driver_data].name, |
|
1067 dev->base_addr, dev->dev_addr, dev->irq); |
|
1068 |
|
1069 netdev_dbg(dev, "Identified 8139 chip type '%s'\n", |
|
1070 rtl_chip_info[tp->chipset].name); |
|
1071 |
|
1072 /* Find the connected MII xcvrs. |
|
1073 Doing this in open() would allow detecting external xcvrs later, but |
|
1074 takes too much time. */ |
|
1075 #ifdef CONFIG_8139TOO_8129 |
|
1076 if (tp->drv_flags & HAS_MII_XCVR) { |
|
1077 int phy, phy_idx = 0; |
|
1078 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) { |
|
1079 int mii_status = mdio_read(dev, phy, 1); |
|
1080 if (mii_status != 0xffff && mii_status != 0x0000) { |
|
1081 u16 advertising = mdio_read(dev, phy, 4); |
|
1082 tp->phys[phy_idx++] = phy; |
|
1083 netdev_info(dev, "MII transceiver %d status 0x%04x advertising %04x\n", |
|
1084 phy, mii_status, advertising); |
|
1085 } |
|
1086 } |
|
1087 if (phy_idx == 0) { |
|
1088 netdev_info(dev, "No MII transceivers found! Assuming SYM transceiver\n"); |
|
1089 tp->phys[0] = 32; |
|
1090 } |
|
1091 } else |
|
1092 #endif |
|
1093 tp->phys[0] = 32; |
|
1094 tp->mii.phy_id = tp->phys[0]; |
|
1095 |
|
1096 /* The lower four bits are the media type. */ |
|
1097 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx]; |
|
1098 if (option > 0) { |
|
1099 tp->mii.full_duplex = (option & 0x210) ? 1 : 0; |
|
1100 tp->default_port = option & 0xFF; |
|
1101 if (tp->default_port) |
|
1102 tp->mii.force_media = 1; |
|
1103 } |
|
1104 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0) |
|
1105 tp->mii.full_duplex = full_duplex[board_idx]; |
|
1106 if (tp->mii.full_duplex) { |
|
1107 netdev_info(dev, "Media type forced to Full Duplex\n"); |
|
1108 /* Changing the MII-advertised media because might prevent |
|
1109 re-connection. */ |
|
1110 tp->mii.force_media = 1; |
|
1111 } |
|
1112 if (tp->default_port) { |
|
1113 netdev_info(dev, " Forcing %dMbps %s-duplex operation\n", |
|
1114 (option & 0x20 ? 100 : 10), |
|
1115 (option & 0x10 ? "full" : "half")); |
|
1116 mdio_write(dev, tp->phys[0], 0, |
|
1117 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */ |
|
1118 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */ |
|
1119 } |
|
1120 |
|
1121 /* Put the chip into low-power mode. */ |
|
1122 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
1123 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */ |
|
1124 |
|
1125 return 0; |
|
1126 |
|
1127 err_out: |
|
1128 __rtl8139_cleanup_dev (dev); |
|
1129 pci_disable_device (pdev); |
|
1130 return i; |
|
1131 } |
|
1132 |
|
1133 |
|
1134 static void __devexit rtl8139_remove_one (struct pci_dev *pdev) |
|
1135 { |
|
1136 struct net_device *dev = pci_get_drvdata (pdev); |
|
1137 struct rtl8139_private *tp = netdev_priv(dev); |
|
1138 |
|
1139 assert (dev != NULL); |
|
1140 |
|
1141 cancel_delayed_work_sync(&tp->thread); |
|
1142 |
|
1143 unregister_netdev (dev); |
|
1144 |
|
1145 __rtl8139_cleanup_dev (dev); |
|
1146 pci_disable_device (pdev); |
|
1147 } |
|
1148 |
|
1149 |
|
1150 /* Serial EEPROM section. */ |
|
1151 |
|
1152 /* EEPROM_Ctrl bits. */ |
|
1153 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ |
|
1154 #define EE_CS 0x08 /* EEPROM chip select. */ |
|
1155 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */ |
|
1156 #define EE_WRITE_0 0x00 |
|
1157 #define EE_WRITE_1 0x02 |
|
1158 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */ |
|
1159 #define EE_ENB (0x80 | EE_CS) |
|
1160 |
|
1161 /* Delay between EEPROM clock transitions. |
|
1162 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this. |
|
1163 */ |
|
1164 |
|
1165 #define eeprom_delay() (void)RTL_R8(Cfg9346) |
|
1166 |
|
1167 /* The EEPROM commands include the alway-set leading bit. */ |
|
1168 #define EE_WRITE_CMD (5) |
|
1169 #define EE_READ_CMD (6) |
|
1170 #define EE_ERASE_CMD (7) |
|
1171 |
|
1172 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len) |
|
1173 { |
|
1174 int i; |
|
1175 unsigned retval = 0; |
|
1176 int read_cmd = location | (EE_READ_CMD << addr_len); |
|
1177 |
|
1178 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS); |
|
1179 RTL_W8 (Cfg9346, EE_ENB); |
|
1180 eeprom_delay (); |
|
1181 |
|
1182 /* Shift the read command bits out. */ |
|
1183 for (i = 4 + addr_len; i >= 0; i--) { |
|
1184 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; |
|
1185 RTL_W8 (Cfg9346, EE_ENB | dataval); |
|
1186 eeprom_delay (); |
|
1187 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK); |
|
1188 eeprom_delay (); |
|
1189 } |
|
1190 RTL_W8 (Cfg9346, EE_ENB); |
|
1191 eeprom_delay (); |
|
1192 |
|
1193 for (i = 16; i > 0; i--) { |
|
1194 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK); |
|
1195 eeprom_delay (); |
|
1196 retval = |
|
1197 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 : |
|
1198 0); |
|
1199 RTL_W8 (Cfg9346, EE_ENB); |
|
1200 eeprom_delay (); |
|
1201 } |
|
1202 |
|
1203 /* Terminate the EEPROM access. */ |
|
1204 RTL_W8 (Cfg9346, ~EE_CS); |
|
1205 eeprom_delay (); |
|
1206 |
|
1207 return retval; |
|
1208 } |
|
1209 |
|
1210 /* MII serial management: mostly bogus for now. */ |
|
1211 /* Read and write the MII management registers using software-generated |
|
1212 serial MDIO protocol. |
|
1213 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually |
|
1214 met by back-to-back PCI I/O cycles, but we insert a delay to avoid |
|
1215 "overclocking" issues. */ |
|
1216 #define MDIO_DIR 0x80 |
|
1217 #define MDIO_DATA_OUT 0x04 |
|
1218 #define MDIO_DATA_IN 0x02 |
|
1219 #define MDIO_CLK 0x01 |
|
1220 #define MDIO_WRITE0 (MDIO_DIR) |
|
1221 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT) |
|
1222 |
|
1223 #define mdio_delay() RTL_R8(Config4) |
|
1224 |
|
1225 |
|
1226 static const char mii_2_8139_map[8] = { |
|
1227 BasicModeCtrl, |
|
1228 BasicModeStatus, |
|
1229 0, |
|
1230 0, |
|
1231 NWayAdvert, |
|
1232 NWayLPAR, |
|
1233 NWayExpansion, |
|
1234 0 |
|
1235 }; |
|
1236 |
|
1237 |
|
1238 #ifdef CONFIG_8139TOO_8129 |
|
1239 /* Syncronize the MII management interface by shifting 32 one bits out. */ |
|
1240 static void mdio_sync (void __iomem *ioaddr) |
|
1241 { |
|
1242 int i; |
|
1243 |
|
1244 for (i = 32; i >= 0; i--) { |
|
1245 RTL_W8 (Config4, MDIO_WRITE1); |
|
1246 mdio_delay (); |
|
1247 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK); |
|
1248 mdio_delay (); |
|
1249 } |
|
1250 } |
|
1251 #endif |
|
1252 |
|
1253 static int mdio_read (struct net_device *dev, int phy_id, int location) |
|
1254 { |
|
1255 struct rtl8139_private *tp = netdev_priv(dev); |
|
1256 int retval = 0; |
|
1257 #ifdef CONFIG_8139TOO_8129 |
|
1258 void __iomem *ioaddr = tp->mmio_addr; |
|
1259 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; |
|
1260 int i; |
|
1261 #endif |
|
1262 |
|
1263 if (phy_id > 31) { /* Really a 8139. Use internal registers. */ |
|
1264 void __iomem *ioaddr = tp->mmio_addr; |
|
1265 return location < 8 && mii_2_8139_map[location] ? |
|
1266 RTL_R16 (mii_2_8139_map[location]) : 0; |
|
1267 } |
|
1268 |
|
1269 #ifdef CONFIG_8139TOO_8129 |
|
1270 mdio_sync (ioaddr); |
|
1271 /* Shift the read command bits out. */ |
|
1272 for (i = 15; i >= 0; i--) { |
|
1273 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0; |
|
1274 |
|
1275 RTL_W8 (Config4, MDIO_DIR | dataval); |
|
1276 mdio_delay (); |
|
1277 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK); |
|
1278 mdio_delay (); |
|
1279 } |
|
1280 |
|
1281 /* Read the two transition, 16 data, and wire-idle bits. */ |
|
1282 for (i = 19; i > 0; i--) { |
|
1283 RTL_W8 (Config4, 0); |
|
1284 mdio_delay (); |
|
1285 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0); |
|
1286 RTL_W8 (Config4, MDIO_CLK); |
|
1287 mdio_delay (); |
|
1288 } |
|
1289 #endif |
|
1290 |
|
1291 return (retval >> 1) & 0xffff; |
|
1292 } |
|
1293 |
|
1294 |
|
1295 static void mdio_write (struct net_device *dev, int phy_id, int location, |
|
1296 int value) |
|
1297 { |
|
1298 struct rtl8139_private *tp = netdev_priv(dev); |
|
1299 #ifdef CONFIG_8139TOO_8129 |
|
1300 void __iomem *ioaddr = tp->mmio_addr; |
|
1301 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value; |
|
1302 int i; |
|
1303 #endif |
|
1304 |
|
1305 if (phy_id > 31) { /* Really a 8139. Use internal registers. */ |
|
1306 void __iomem *ioaddr = tp->mmio_addr; |
|
1307 if (location == 0) { |
|
1308 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
1309 RTL_W16 (BasicModeCtrl, value); |
|
1310 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1311 } else if (location < 8 && mii_2_8139_map[location]) |
|
1312 RTL_W16 (mii_2_8139_map[location], value); |
|
1313 return; |
|
1314 } |
|
1315 |
|
1316 #ifdef CONFIG_8139TOO_8129 |
|
1317 mdio_sync (ioaddr); |
|
1318 |
|
1319 /* Shift the command bits out. */ |
|
1320 for (i = 31; i >= 0; i--) { |
|
1321 int dataval = |
|
1322 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; |
|
1323 RTL_W8 (Config4, dataval); |
|
1324 mdio_delay (); |
|
1325 RTL_W8 (Config4, dataval | MDIO_CLK); |
|
1326 mdio_delay (); |
|
1327 } |
|
1328 /* Clear out extra bits. */ |
|
1329 for (i = 2; i > 0; i--) { |
|
1330 RTL_W8 (Config4, 0); |
|
1331 mdio_delay (); |
|
1332 RTL_W8 (Config4, MDIO_CLK); |
|
1333 mdio_delay (); |
|
1334 } |
|
1335 #endif |
|
1336 } |
|
1337 |
|
1338 |
|
1339 static int rtl8139_open (struct net_device *dev) |
|
1340 { |
|
1341 struct rtl8139_private *tp = netdev_priv(dev); |
|
1342 int retval; |
|
1343 void __iomem *ioaddr = tp->mmio_addr; |
|
1344 |
|
1345 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev); |
|
1346 if (retval) |
|
1347 return retval; |
|
1348 |
|
1349 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
1350 &tp->tx_bufs_dma, GFP_KERNEL); |
|
1351 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
1352 &tp->rx_ring_dma, GFP_KERNEL); |
|
1353 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) { |
|
1354 free_irq(dev->irq, dev); |
|
1355 |
|
1356 if (tp->tx_bufs) |
|
1357 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
1358 tp->tx_bufs, tp->tx_bufs_dma); |
|
1359 if (tp->rx_ring) |
|
1360 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
1361 tp->rx_ring, tp->rx_ring_dma); |
|
1362 |
|
1363 return -ENOMEM; |
|
1364 |
|
1365 } |
|
1366 |
|
1367 napi_enable(&tp->napi); |
|
1368 |
|
1369 tp->mii.full_duplex = tp->mii.force_media; |
|
1370 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000; |
|
1371 |
|
1372 rtl8139_init_ring (dev); |
|
1373 rtl8139_hw_start (dev); |
|
1374 netif_start_queue (dev); |
|
1375 |
|
1376 netif_dbg(tp, ifup, dev, |
|
1377 "%s() ioaddr %#llx IRQ %d GP Pins %02x %s-duplex\n", |
|
1378 __func__, |
|
1379 (unsigned long long)pci_resource_start (tp->pci_dev, 1), |
|
1380 dev->irq, RTL_R8 (MediaStatus), |
|
1381 tp->mii.full_duplex ? "full" : "half"); |
|
1382 |
|
1383 rtl8139_start_thread(tp); |
|
1384 |
|
1385 return 0; |
|
1386 } |
|
1387 |
|
1388 |
|
1389 static void rtl_check_media (struct net_device *dev, unsigned int init_media) |
|
1390 { |
|
1391 struct rtl8139_private *tp = netdev_priv(dev); |
|
1392 |
|
1393 if (tp->phys[0] >= 0) { |
|
1394 mii_check_media(&tp->mii, netif_msg_link(tp), init_media); |
|
1395 } |
|
1396 } |
|
1397 |
|
1398 /* Start the hardware at open or resume. */ |
|
1399 static void rtl8139_hw_start (struct net_device *dev) |
|
1400 { |
|
1401 struct rtl8139_private *tp = netdev_priv(dev); |
|
1402 void __iomem *ioaddr = tp->mmio_addr; |
|
1403 u32 i; |
|
1404 u8 tmp; |
|
1405 |
|
1406 /* Bring old chips out of low-power mode. */ |
|
1407 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
1408 RTL_W8 (HltClk, 'R'); |
|
1409 |
|
1410 rtl8139_chip_reset (ioaddr); |
|
1411 |
|
1412 /* unlock Config[01234] and BMCR register writes */ |
|
1413 RTL_W8_F (Cfg9346, Cfg9346_Unlock); |
|
1414 /* Restore our idea of the MAC address. */ |
|
1415 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0))); |
|
1416 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4))); |
|
1417 |
|
1418 tp->cur_rx = 0; |
|
1419 |
|
1420 /* init Rx ring buffer DMA address */ |
|
1421 RTL_W32_F (RxBuf, tp->rx_ring_dma); |
|
1422 |
|
1423 /* Must enable Tx/Rx before setting transfer thresholds! */ |
|
1424 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1425 |
|
1426 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys; |
|
1427 RTL_W32 (RxConfig, tp->rx_config); |
|
1428 RTL_W32 (TxConfig, rtl8139_tx_config); |
|
1429 |
|
1430 rtl_check_media (dev, 1); |
|
1431 |
|
1432 if (tp->chipset >= CH_8139B) { |
|
1433 /* Disable magic packet scanning, which is enabled |
|
1434 * when PM is enabled in Config1. It can be reenabled |
|
1435 * via ETHTOOL_SWOL if desired. */ |
|
1436 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic); |
|
1437 } |
|
1438 |
|
1439 netdev_dbg(dev, "init buffer addresses\n"); |
|
1440 |
|
1441 /* Lock Config[01234] and BMCR register writes */ |
|
1442 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1443 |
|
1444 /* init Tx buffer DMA addresses */ |
|
1445 for (i = 0; i < NUM_TX_DESC; i++) |
|
1446 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs)); |
|
1447 |
|
1448 RTL_W32 (RxMissed, 0); |
|
1449 |
|
1450 rtl8139_set_rx_mode (dev); |
|
1451 |
|
1452 /* no early-rx interrupts */ |
|
1453 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear); |
|
1454 |
|
1455 /* make sure RxTx has started */ |
|
1456 tmp = RTL_R8 (ChipCmd); |
|
1457 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb))) |
|
1458 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1459 |
|
1460 /* Enable all known interrupts by setting the interrupt mask. */ |
|
1461 RTL_W16 (IntrMask, rtl8139_intr_mask); |
|
1462 } |
|
1463 |
|
1464 |
|
1465 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
|
1466 static void rtl8139_init_ring (struct net_device *dev) |
|
1467 { |
|
1468 struct rtl8139_private *tp = netdev_priv(dev); |
|
1469 int i; |
|
1470 |
|
1471 tp->cur_rx = 0; |
|
1472 tp->cur_tx = 0; |
|
1473 tp->dirty_tx = 0; |
|
1474 |
|
1475 for (i = 0; i < NUM_TX_DESC; i++) |
|
1476 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE]; |
|
1477 } |
|
1478 |
|
1479 |
|
1480 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */ |
|
1481 static int next_tick = 3 * HZ; |
|
1482 |
|
1483 #ifndef CONFIG_8139TOO_TUNE_TWISTER |
|
1484 static inline void rtl8139_tune_twister (struct net_device *dev, |
|
1485 struct rtl8139_private *tp) {} |
|
1486 #else |
|
1487 enum TwisterParamVals { |
|
1488 PARA78_default = 0x78fa8388, |
|
1489 PARA7c_default = 0xcb38de43, /* param[0][3] */ |
|
1490 PARA7c_xxx = 0xcb38de43, |
|
1491 }; |
|
1492 |
|
1493 static const unsigned long param[4][4] = { |
|
1494 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43}, |
|
1495 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, |
|
1496 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, |
|
1497 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83} |
|
1498 }; |
|
1499 |
|
1500 static void rtl8139_tune_twister (struct net_device *dev, |
|
1501 struct rtl8139_private *tp) |
|
1502 { |
|
1503 int linkcase; |
|
1504 void __iomem *ioaddr = tp->mmio_addr; |
|
1505 |
|
1506 /* This is a complicated state machine to configure the "twister" for |
|
1507 impedance/echos based on the cable length. |
|
1508 All of this is magic and undocumented. |
|
1509 */ |
|
1510 switch (tp->twistie) { |
|
1511 case 1: |
|
1512 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) { |
|
1513 /* We have link beat, let us tune the twister. */ |
|
1514 RTL_W16 (CSCR, CSCR_LinkDownOffCmd); |
|
1515 tp->twistie = 2; /* Change to state 2. */ |
|
1516 next_tick = HZ / 10; |
|
1517 } else { |
|
1518 /* Just put in some reasonable defaults for when beat returns. */ |
|
1519 RTL_W16 (CSCR, CSCR_LinkDownCmd); |
|
1520 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */ |
|
1521 RTL_W32 (PARA78, PARA78_default); |
|
1522 RTL_W32 (PARA7c, PARA7c_default); |
|
1523 tp->twistie = 0; /* Bail from future actions. */ |
|
1524 } |
|
1525 break; |
|
1526 case 2: |
|
1527 /* Read how long it took to hear the echo. */ |
|
1528 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits; |
|
1529 if (linkcase == 0x7000) |
|
1530 tp->twist_row = 3; |
|
1531 else if (linkcase == 0x3000) |
|
1532 tp->twist_row = 2; |
|
1533 else if (linkcase == 0x1000) |
|
1534 tp->twist_row = 1; |
|
1535 else |
|
1536 tp->twist_row = 0; |
|
1537 tp->twist_col = 0; |
|
1538 tp->twistie = 3; /* Change to state 2. */ |
|
1539 next_tick = HZ / 10; |
|
1540 break; |
|
1541 case 3: |
|
1542 /* Put out four tuning parameters, one per 100msec. */ |
|
1543 if (tp->twist_col == 0) |
|
1544 RTL_W16 (FIFOTMS, 0); |
|
1545 RTL_W32 (PARA7c, param[(int) tp->twist_row] |
|
1546 [(int) tp->twist_col]); |
|
1547 next_tick = HZ / 10; |
|
1548 if (++tp->twist_col >= 4) { |
|
1549 /* For short cables we are done. |
|
1550 For long cables (row == 3) check for mistune. */ |
|
1551 tp->twistie = |
|
1552 (tp->twist_row == 3) ? 4 : 0; |
|
1553 } |
|
1554 break; |
|
1555 case 4: |
|
1556 /* Special case for long cables: check for mistune. */ |
|
1557 if ((RTL_R16 (CSCR) & |
|
1558 CSCR_LinkStatusBits) == 0x7000) { |
|
1559 tp->twistie = 0; |
|
1560 break; |
|
1561 } else { |
|
1562 RTL_W32 (PARA7c, 0xfb38de03); |
|
1563 tp->twistie = 5; |
|
1564 next_tick = HZ / 10; |
|
1565 } |
|
1566 break; |
|
1567 case 5: |
|
1568 /* Retune for shorter cable (column 2). */ |
|
1569 RTL_W32 (FIFOTMS, 0x20); |
|
1570 RTL_W32 (PARA78, PARA78_default); |
|
1571 RTL_W32 (PARA7c, PARA7c_default); |
|
1572 RTL_W32 (FIFOTMS, 0x00); |
|
1573 tp->twist_row = 2; |
|
1574 tp->twist_col = 0; |
|
1575 tp->twistie = 3; |
|
1576 next_tick = HZ / 10; |
|
1577 break; |
|
1578 |
|
1579 default: |
|
1580 /* do nothing */ |
|
1581 break; |
|
1582 } |
|
1583 } |
|
1584 #endif /* CONFIG_8139TOO_TUNE_TWISTER */ |
|
1585 |
|
1586 static inline void rtl8139_thread_iter (struct net_device *dev, |
|
1587 struct rtl8139_private *tp, |
|
1588 void __iomem *ioaddr) |
|
1589 { |
|
1590 int mii_lpa; |
|
1591 |
|
1592 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA); |
|
1593 |
|
1594 if (!tp->mii.force_media && mii_lpa != 0xffff) { |
|
1595 int duplex = ((mii_lpa & LPA_100FULL) || |
|
1596 (mii_lpa & 0x01C0) == 0x0040); |
|
1597 if (tp->mii.full_duplex != duplex) { |
|
1598 tp->mii.full_duplex = duplex; |
|
1599 |
|
1600 if (mii_lpa) { |
|
1601 netdev_info(dev, "Setting %s-duplex based on MII #%d link partner ability of %04x\n", |
|
1602 tp->mii.full_duplex ? "full" : "half", |
|
1603 tp->phys[0], mii_lpa); |
|
1604 } else { |
|
1605 netdev_info(dev, "media is unconnected, link down, or incompatible connection\n"); |
|
1606 } |
|
1607 #if 0 |
|
1608 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
1609 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20); |
|
1610 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1611 #endif |
|
1612 } |
|
1613 } |
|
1614 |
|
1615 next_tick = HZ * 60; |
|
1616 |
|
1617 rtl8139_tune_twister (dev, tp); |
|
1618 |
|
1619 netdev_dbg(dev, "Media selection tick, Link partner %04x\n", |
|
1620 RTL_R16(NWayLPAR)); |
|
1621 netdev_dbg(dev, "Other registers are IntMask %04x IntStatus %04x\n", |
|
1622 RTL_R16(IntrMask), RTL_R16(IntrStatus)); |
|
1623 netdev_dbg(dev, "Chip config %02x %02x\n", |
|
1624 RTL_R8(Config0), RTL_R8(Config1)); |
|
1625 } |
|
1626 |
|
1627 static void rtl8139_thread (struct work_struct *work) |
|
1628 { |
|
1629 struct rtl8139_private *tp = |
|
1630 container_of(work, struct rtl8139_private, thread.work); |
|
1631 struct net_device *dev = tp->mii.dev; |
|
1632 unsigned long thr_delay = next_tick; |
|
1633 |
|
1634 rtnl_lock(); |
|
1635 |
|
1636 if (!netif_running(dev)) |
|
1637 goto out_unlock; |
|
1638 |
|
1639 if (tp->watchdog_fired) { |
|
1640 tp->watchdog_fired = 0; |
|
1641 rtl8139_tx_timeout_task(work); |
|
1642 } else |
|
1643 rtl8139_thread_iter(dev, tp, tp->mmio_addr); |
|
1644 |
|
1645 if (tp->have_thread) |
|
1646 schedule_delayed_work(&tp->thread, thr_delay); |
|
1647 out_unlock: |
|
1648 rtnl_unlock (); |
|
1649 } |
|
1650 |
|
1651 static void rtl8139_start_thread(struct rtl8139_private *tp) |
|
1652 { |
|
1653 tp->twistie = 0; |
|
1654 if (tp->chipset == CH_8139_K) |
|
1655 tp->twistie = 1; |
|
1656 else if (tp->drv_flags & HAS_LNK_CHNG) |
|
1657 return; |
|
1658 |
|
1659 tp->have_thread = 1; |
|
1660 tp->watchdog_fired = 0; |
|
1661 |
|
1662 schedule_delayed_work(&tp->thread, next_tick); |
|
1663 } |
|
1664 |
|
1665 static inline void rtl8139_tx_clear (struct rtl8139_private *tp) |
|
1666 { |
|
1667 tp->cur_tx = 0; |
|
1668 tp->dirty_tx = 0; |
|
1669 |
|
1670 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */ |
|
1671 } |
|
1672 |
|
1673 static void rtl8139_tx_timeout_task (struct work_struct *work) |
|
1674 { |
|
1675 struct rtl8139_private *tp = |
|
1676 container_of(work, struct rtl8139_private, thread.work); |
|
1677 struct net_device *dev = tp->mii.dev; |
|
1678 void __iomem *ioaddr = tp->mmio_addr; |
|
1679 int i; |
|
1680 u8 tmp8; |
|
1681 |
|
1682 netdev_dbg(dev, "Transmit timeout, status %02x %04x %04x media %02x\n", |
|
1683 RTL_R8(ChipCmd), RTL_R16(IntrStatus), |
|
1684 RTL_R16(IntrMask), RTL_R8(MediaStatus)); |
|
1685 /* Emit info to figure out what went wrong. */ |
|
1686 netdev_dbg(dev, "Tx queue start entry %ld dirty entry %ld\n", |
|
1687 tp->cur_tx, tp->dirty_tx); |
|
1688 for (i = 0; i < NUM_TX_DESC; i++) |
|
1689 netdev_dbg(dev, "Tx descriptor %d is %08x%s\n", |
|
1690 i, RTL_R32(TxStatus0 + (i * 4)), |
|
1691 i == tp->dirty_tx % NUM_TX_DESC ? |
|
1692 " (queue head)" : ""); |
|
1693 |
|
1694 tp->xstats.tx_timeouts++; |
|
1695 |
|
1696 /* disable Tx ASAP, if not already */ |
|
1697 tmp8 = RTL_R8 (ChipCmd); |
|
1698 if (tmp8 & CmdTxEnb) |
|
1699 RTL_W8 (ChipCmd, CmdRxEnb); |
|
1700 |
|
1701 spin_lock_bh(&tp->rx_lock); |
|
1702 /* Disable interrupts by clearing the interrupt mask. */ |
|
1703 RTL_W16 (IntrMask, 0x0000); |
|
1704 |
|
1705 /* Stop a shared interrupt from scavenging while we are. */ |
|
1706 spin_lock_irq(&tp->lock); |
|
1707 rtl8139_tx_clear (tp); |
|
1708 spin_unlock_irq(&tp->lock); |
|
1709 |
|
1710 /* ...and finally, reset everything */ |
|
1711 if (netif_running(dev)) { |
|
1712 rtl8139_hw_start (dev); |
|
1713 netif_wake_queue (dev); |
|
1714 } |
|
1715 spin_unlock_bh(&tp->rx_lock); |
|
1716 } |
|
1717 |
|
1718 static void rtl8139_tx_timeout (struct net_device *dev) |
|
1719 { |
|
1720 struct rtl8139_private *tp = netdev_priv(dev); |
|
1721 |
|
1722 tp->watchdog_fired = 1; |
|
1723 if (!tp->have_thread) { |
|
1724 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread); |
|
1725 schedule_delayed_work(&tp->thread, next_tick); |
|
1726 } |
|
1727 } |
|
1728 |
|
1729 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb, |
|
1730 struct net_device *dev) |
|
1731 { |
|
1732 struct rtl8139_private *tp = netdev_priv(dev); |
|
1733 void __iomem *ioaddr = tp->mmio_addr; |
|
1734 unsigned int entry; |
|
1735 unsigned int len = skb->len; |
|
1736 unsigned long flags; |
|
1737 |
|
1738 /* Calculate the next Tx descriptor entry. */ |
|
1739 entry = tp->cur_tx % NUM_TX_DESC; |
|
1740 |
|
1741 /* Note: the chip doesn't have auto-pad! */ |
|
1742 if (likely(len < TX_BUF_SIZE)) { |
|
1743 if (len < ETH_ZLEN) |
|
1744 memset(tp->tx_buf[entry], 0, ETH_ZLEN); |
|
1745 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]); |
|
1746 dev_kfree_skb(skb); |
|
1747 } else { |
|
1748 dev_kfree_skb(skb); |
|
1749 dev->stats.tx_dropped++; |
|
1750 return NETDEV_TX_OK; |
|
1751 } |
|
1752 |
|
1753 spin_lock_irqsave(&tp->lock, flags); |
|
1754 /* |
|
1755 * Writing to TxStatus triggers a DMA transfer of the data |
|
1756 * copied to tp->tx_buf[entry] above. Use a memory barrier |
|
1757 * to make sure that the device sees the updated data. |
|
1758 */ |
|
1759 wmb(); |
|
1760 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)), |
|
1761 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN)); |
|
1762 |
|
1763 tp->cur_tx++; |
|
1764 |
|
1765 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx) |
|
1766 netif_stop_queue (dev); |
|
1767 spin_unlock_irqrestore(&tp->lock, flags); |
|
1768 |
|
1769 netif_dbg(tp, tx_queued, dev, "Queued Tx packet size %u to slot %d\n", |
|
1770 len, entry); |
|
1771 |
|
1772 return NETDEV_TX_OK; |
|
1773 } |
|
1774 |
|
1775 |
|
1776 static void rtl8139_tx_interrupt (struct net_device *dev, |
|
1777 struct rtl8139_private *tp, |
|
1778 void __iomem *ioaddr) |
|
1779 { |
|
1780 unsigned long dirty_tx, tx_left; |
|
1781 |
|
1782 assert (dev != NULL); |
|
1783 assert (ioaddr != NULL); |
|
1784 |
|
1785 dirty_tx = tp->dirty_tx; |
|
1786 tx_left = tp->cur_tx - dirty_tx; |
|
1787 while (tx_left > 0) { |
|
1788 int entry = dirty_tx % NUM_TX_DESC; |
|
1789 int txstatus; |
|
1790 |
|
1791 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32))); |
|
1792 |
|
1793 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted))) |
|
1794 break; /* It still hasn't been Txed */ |
|
1795 |
|
1796 /* Note: TxCarrierLost is always asserted at 100mbps. */ |
|
1797 if (txstatus & (TxOutOfWindow | TxAborted)) { |
|
1798 /* There was an major error, log it. */ |
|
1799 netif_dbg(tp, tx_err, dev, "Transmit error, Tx status %08x\n", |
|
1800 txstatus); |
|
1801 dev->stats.tx_errors++; |
|
1802 if (txstatus & TxAborted) { |
|
1803 dev->stats.tx_aborted_errors++; |
|
1804 RTL_W32 (TxConfig, TxClearAbt); |
|
1805 RTL_W16 (IntrStatus, TxErr); |
|
1806 wmb(); |
|
1807 } |
|
1808 if (txstatus & TxCarrierLost) |
|
1809 dev->stats.tx_carrier_errors++; |
|
1810 if (txstatus & TxOutOfWindow) |
|
1811 dev->stats.tx_window_errors++; |
|
1812 } else { |
|
1813 if (txstatus & TxUnderrun) { |
|
1814 /* Add 64 to the Tx FIFO threshold. */ |
|
1815 if (tp->tx_flag < 0x00300000) |
|
1816 tp->tx_flag += 0x00020000; |
|
1817 dev->stats.tx_fifo_errors++; |
|
1818 } |
|
1819 dev->stats.collisions += (txstatus >> 24) & 15; |
|
1820 u64_stats_update_begin(&tp->tx_stats.syncp); |
|
1821 tp->tx_stats.packets++; |
|
1822 tp->tx_stats.bytes += txstatus & 0x7ff; |
|
1823 u64_stats_update_end(&tp->tx_stats.syncp); |
|
1824 } |
|
1825 |
|
1826 dirty_tx++; |
|
1827 tx_left--; |
|
1828 } |
|
1829 |
|
1830 #ifndef RTL8139_NDEBUG |
|
1831 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) { |
|
1832 netdev_err(dev, "Out-of-sync dirty pointer, %ld vs. %ld\n", |
|
1833 dirty_tx, tp->cur_tx); |
|
1834 dirty_tx += NUM_TX_DESC; |
|
1835 } |
|
1836 #endif /* RTL8139_NDEBUG */ |
|
1837 |
|
1838 /* only wake the queue if we did work, and the queue is stopped */ |
|
1839 if (tp->dirty_tx != dirty_tx) { |
|
1840 tp->dirty_tx = dirty_tx; |
|
1841 mb(); |
|
1842 netif_wake_queue (dev); |
|
1843 } |
|
1844 } |
|
1845 |
|
1846 |
|
1847 /* TODO: clean this up! Rx reset need not be this intensive */ |
|
1848 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev, |
|
1849 struct rtl8139_private *tp, void __iomem *ioaddr) |
|
1850 { |
|
1851 u8 tmp8; |
|
1852 #ifdef CONFIG_8139_OLD_RX_RESET |
|
1853 int tmp_work; |
|
1854 #endif |
|
1855 |
|
1856 netif_dbg(tp, rx_err, dev, "Ethernet frame had errors, status %08x\n", |
|
1857 rx_status); |
|
1858 dev->stats.rx_errors++; |
|
1859 if (!(rx_status & RxStatusOK)) { |
|
1860 if (rx_status & RxTooLong) { |
|
1861 netdev_dbg(dev, "Oversized Ethernet frame, status %04x!\n", |
|
1862 rx_status); |
|
1863 /* A.C.: The chip hangs here. */ |
|
1864 } |
|
1865 if (rx_status & (RxBadSymbol | RxBadAlign)) |
|
1866 dev->stats.rx_frame_errors++; |
|
1867 if (rx_status & (RxRunt | RxTooLong)) |
|
1868 dev->stats.rx_length_errors++; |
|
1869 if (rx_status & RxCRCErr) |
|
1870 dev->stats.rx_crc_errors++; |
|
1871 } else { |
|
1872 tp->xstats.rx_lost_in_ring++; |
|
1873 } |
|
1874 |
|
1875 #ifndef CONFIG_8139_OLD_RX_RESET |
|
1876 tmp8 = RTL_R8 (ChipCmd); |
|
1877 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb); |
|
1878 RTL_W8 (ChipCmd, tmp8); |
|
1879 RTL_W32 (RxConfig, tp->rx_config); |
|
1880 tp->cur_rx = 0; |
|
1881 #else |
|
1882 /* Reset the receiver, based on RealTek recommendation. (Bug?) */ |
|
1883 |
|
1884 /* disable receive */ |
|
1885 RTL_W8_F (ChipCmd, CmdTxEnb); |
|
1886 tmp_work = 200; |
|
1887 while (--tmp_work > 0) { |
|
1888 udelay(1); |
|
1889 tmp8 = RTL_R8 (ChipCmd); |
|
1890 if (!(tmp8 & CmdRxEnb)) |
|
1891 break; |
|
1892 } |
|
1893 if (tmp_work <= 0) |
|
1894 netdev_warn(dev, "rx stop wait too long\n"); |
|
1895 /* restart receive */ |
|
1896 tmp_work = 200; |
|
1897 while (--tmp_work > 0) { |
|
1898 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1899 udelay(1); |
|
1900 tmp8 = RTL_R8 (ChipCmd); |
|
1901 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb)) |
|
1902 break; |
|
1903 } |
|
1904 if (tmp_work <= 0) |
|
1905 netdev_warn(dev, "tx/rx enable wait too long\n"); |
|
1906 |
|
1907 /* and reinitialize all rx related registers */ |
|
1908 RTL_W8_F (Cfg9346, Cfg9346_Unlock); |
|
1909 /* Must enable Tx/Rx before setting transfer thresholds! */ |
|
1910 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1911 |
|
1912 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys; |
|
1913 RTL_W32 (RxConfig, tp->rx_config); |
|
1914 tp->cur_rx = 0; |
|
1915 |
|
1916 netdev_dbg(dev, "init buffer addresses\n"); |
|
1917 |
|
1918 /* Lock Config[01234] and BMCR register writes */ |
|
1919 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1920 |
|
1921 /* init Rx ring buffer DMA address */ |
|
1922 RTL_W32_F (RxBuf, tp->rx_ring_dma); |
|
1923 |
|
1924 /* A.C.: Reset the multicast list. */ |
|
1925 __set_rx_mode (dev); |
|
1926 #endif |
|
1927 } |
|
1928 |
|
1929 #if RX_BUF_IDX == 3 |
|
1930 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring, |
|
1931 u32 offset, unsigned int size) |
|
1932 { |
|
1933 u32 left = RX_BUF_LEN - offset; |
|
1934 |
|
1935 if (size > left) { |
|
1936 skb_copy_to_linear_data(skb, ring + offset, left); |
|
1937 skb_copy_to_linear_data_offset(skb, left, ring, size - left); |
|
1938 } else |
|
1939 skb_copy_to_linear_data(skb, ring + offset, size); |
|
1940 } |
|
1941 #endif |
|
1942 |
|
1943 static void rtl8139_isr_ack(struct rtl8139_private *tp) |
|
1944 { |
|
1945 void __iomem *ioaddr = tp->mmio_addr; |
|
1946 u16 status; |
|
1947 |
|
1948 status = RTL_R16 (IntrStatus) & RxAckBits; |
|
1949 |
|
1950 /* Clear out errors and receive interrupts */ |
|
1951 if (likely(status != 0)) { |
|
1952 if (unlikely(status & (RxFIFOOver | RxOverflow))) { |
|
1953 tp->dev->stats.rx_errors++; |
|
1954 if (status & RxFIFOOver) |
|
1955 tp->dev->stats.rx_fifo_errors++; |
|
1956 } |
|
1957 RTL_W16_F (IntrStatus, RxAckBits); |
|
1958 } |
|
1959 } |
|
1960 |
|
1961 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp, |
|
1962 int budget) |
|
1963 { |
|
1964 void __iomem *ioaddr = tp->mmio_addr; |
|
1965 int received = 0; |
|
1966 unsigned char *rx_ring = tp->rx_ring; |
|
1967 unsigned int cur_rx = tp->cur_rx; |
|
1968 unsigned int rx_size = 0; |
|
1969 |
|
1970 netdev_dbg(dev, "In %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n", |
|
1971 __func__, (u16)cur_rx, |
|
1972 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd)); |
|
1973 |
|
1974 while (netif_running(dev) && received < budget && |
|
1975 (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) { |
|
1976 u32 ring_offset = cur_rx % RX_BUF_LEN; |
|
1977 u32 rx_status; |
|
1978 unsigned int pkt_size; |
|
1979 struct sk_buff *skb; |
|
1980 |
|
1981 rmb(); |
|
1982 |
|
1983 /* read size+status of next frame from DMA ring buffer */ |
|
1984 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset)); |
|
1985 rx_size = rx_status >> 16; |
|
1986 if (likely(!(dev->features & NETIF_F_RXFCS))) |
|
1987 pkt_size = rx_size - 4; |
|
1988 else |
|
1989 pkt_size = rx_size; |
|
1990 |
|
1991 netif_dbg(tp, rx_status, dev, "%s() status %04x, size %04x, cur %04x\n", |
|
1992 __func__, rx_status, rx_size, cur_rx); |
|
1993 #if RTL8139_DEBUG > 2 |
|
1994 print_hex_dump(KERN_DEBUG, "Frame contents: ", |
|
1995 DUMP_PREFIX_OFFSET, 16, 1, |
|
1996 &rx_ring[ring_offset], 70, true); |
|
1997 #endif |
|
1998 |
|
1999 /* Packet copy from FIFO still in progress. |
|
2000 * Theoretically, this should never happen |
|
2001 * since EarlyRx is disabled. |
|
2002 */ |
|
2003 if (unlikely(rx_size == 0xfff0)) { |
|
2004 if (!tp->fifo_copy_timeout) |
|
2005 tp->fifo_copy_timeout = jiffies + 2; |
|
2006 else if (time_after(jiffies, tp->fifo_copy_timeout)) { |
|
2007 netdev_dbg(dev, "hung FIFO. Reset\n"); |
|
2008 rx_size = 0; |
|
2009 goto no_early_rx; |
|
2010 } |
|
2011 netif_dbg(tp, intr, dev, "fifo copy in progress\n"); |
|
2012 tp->xstats.early_rx++; |
|
2013 break; |
|
2014 } |
|
2015 |
|
2016 no_early_rx: |
|
2017 tp->fifo_copy_timeout = 0; |
|
2018 |
|
2019 /* If Rx err or invalid rx_size/rx_status received |
|
2020 * (which happens if we get lost in the ring), |
|
2021 * Rx process gets reset, so we abort any further |
|
2022 * Rx processing. |
|
2023 */ |
|
2024 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) || |
|
2025 (rx_size < 8) || |
|
2026 (!(rx_status & RxStatusOK)))) { |
|
2027 if ((dev->features & NETIF_F_RXALL) && |
|
2028 (rx_size <= (MAX_ETH_FRAME_SIZE + 4)) && |
|
2029 (rx_size >= 8) && |
|
2030 (!(rx_status & RxStatusOK))) { |
|
2031 /* Length is at least mostly OK, but pkt has |
|
2032 * error. I'm hoping we can handle some of these |
|
2033 * errors without resetting the chip. --Ben |
|
2034 */ |
|
2035 dev->stats.rx_errors++; |
|
2036 if (rx_status & RxCRCErr) { |
|
2037 dev->stats.rx_crc_errors++; |
|
2038 goto keep_pkt; |
|
2039 } |
|
2040 if (rx_status & RxRunt) { |
|
2041 dev->stats.rx_length_errors++; |
|
2042 goto keep_pkt; |
|
2043 } |
|
2044 } |
|
2045 rtl8139_rx_err (rx_status, dev, tp, ioaddr); |
|
2046 received = -1; |
|
2047 goto out; |
|
2048 } |
|
2049 |
|
2050 keep_pkt: |
|
2051 /* Malloc up new buffer, compatible with net-2e. */ |
|
2052 /* Omit the four octet CRC from the length. */ |
|
2053 |
|
2054 skb = netdev_alloc_skb_ip_align(dev, pkt_size); |
|
2055 if (likely(skb)) { |
|
2056 #if RX_BUF_IDX == 3 |
|
2057 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size); |
|
2058 #else |
|
2059 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size); |
|
2060 #endif |
|
2061 skb_put (skb, pkt_size); |
|
2062 |
|
2063 skb->protocol = eth_type_trans (skb, dev); |
|
2064 |
|
2065 u64_stats_update_begin(&tp->rx_stats.syncp); |
|
2066 tp->rx_stats.packets++; |
|
2067 tp->rx_stats.bytes += pkt_size; |
|
2068 u64_stats_update_end(&tp->rx_stats.syncp); |
|
2069 |
|
2070 netif_receive_skb (skb); |
|
2071 } else { |
|
2072 if (net_ratelimit()) |
|
2073 netdev_warn(dev, "Memory squeeze, dropping packet\n"); |
|
2074 dev->stats.rx_dropped++; |
|
2075 } |
|
2076 received++; |
|
2077 |
|
2078 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3; |
|
2079 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16)); |
|
2080 |
|
2081 rtl8139_isr_ack(tp); |
|
2082 } |
|
2083 |
|
2084 if (unlikely(!received || rx_size == 0xfff0)) |
|
2085 rtl8139_isr_ack(tp); |
|
2086 |
|
2087 netdev_dbg(dev, "Done %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n", |
|
2088 __func__, cur_rx, |
|
2089 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd)); |
|
2090 |
|
2091 tp->cur_rx = cur_rx; |
|
2092 |
|
2093 /* |
|
2094 * The receive buffer should be mostly empty. |
|
2095 * Tell NAPI to reenable the Rx irq. |
|
2096 */ |
|
2097 if (tp->fifo_copy_timeout) |
|
2098 received = budget; |
|
2099 |
|
2100 out: |
|
2101 return received; |
|
2102 } |
|
2103 |
|
2104 |
|
2105 static void rtl8139_weird_interrupt (struct net_device *dev, |
|
2106 struct rtl8139_private *tp, |
|
2107 void __iomem *ioaddr, |
|
2108 int status, int link_changed) |
|
2109 { |
|
2110 netdev_dbg(dev, "Abnormal interrupt, status %08x\n", status); |
|
2111 |
|
2112 assert (dev != NULL); |
|
2113 assert (tp != NULL); |
|
2114 assert (ioaddr != NULL); |
|
2115 |
|
2116 /* Update the error count. */ |
|
2117 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2118 RTL_W32 (RxMissed, 0); |
|
2119 |
|
2120 if ((status & RxUnderrun) && link_changed && |
|
2121 (tp->drv_flags & HAS_LNK_CHNG)) { |
|
2122 rtl_check_media(dev, 0); |
|
2123 status &= ~RxUnderrun; |
|
2124 } |
|
2125 |
|
2126 if (status & (RxUnderrun | RxErr)) |
|
2127 dev->stats.rx_errors++; |
|
2128 |
|
2129 if (status & PCSTimeout) |
|
2130 dev->stats.rx_length_errors++; |
|
2131 if (status & RxUnderrun) |
|
2132 dev->stats.rx_fifo_errors++; |
|
2133 if (status & PCIErr) { |
|
2134 u16 pci_cmd_status; |
|
2135 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status); |
|
2136 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status); |
|
2137 |
|
2138 netdev_err(dev, "PCI Bus error %04x\n", pci_cmd_status); |
|
2139 } |
|
2140 } |
|
2141 |
|
2142 static int rtl8139_poll(struct napi_struct *napi, int budget) |
|
2143 { |
|
2144 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi); |
|
2145 struct net_device *dev = tp->dev; |
|
2146 void __iomem *ioaddr = tp->mmio_addr; |
|
2147 int work_done; |
|
2148 |
|
2149 spin_lock(&tp->rx_lock); |
|
2150 work_done = 0; |
|
2151 if (likely(RTL_R16(IntrStatus) & RxAckBits)) |
|
2152 work_done += rtl8139_rx(dev, tp, budget); |
|
2153 |
|
2154 if (work_done < budget) { |
|
2155 unsigned long flags; |
|
2156 /* |
|
2157 * Order is important since data can get interrupted |
|
2158 * again when we think we are done. |
|
2159 */ |
|
2160 spin_lock_irqsave(&tp->lock, flags); |
|
2161 __napi_complete(napi); |
|
2162 RTL_W16_F(IntrMask, rtl8139_intr_mask); |
|
2163 spin_unlock_irqrestore(&tp->lock, flags); |
|
2164 } |
|
2165 spin_unlock(&tp->rx_lock); |
|
2166 |
|
2167 return work_done; |
|
2168 } |
|
2169 |
|
2170 /* The interrupt handler does all of the Rx thread work and cleans up |
|
2171 after the Tx thread. */ |
|
2172 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance) |
|
2173 { |
|
2174 struct net_device *dev = (struct net_device *) dev_instance; |
|
2175 struct rtl8139_private *tp = netdev_priv(dev); |
|
2176 void __iomem *ioaddr = tp->mmio_addr; |
|
2177 u16 status, ackstat; |
|
2178 int link_changed = 0; /* avoid bogus "uninit" warning */ |
|
2179 int handled = 0; |
|
2180 |
|
2181 spin_lock (&tp->lock); |
|
2182 status = RTL_R16 (IntrStatus); |
|
2183 |
|
2184 /* shared irq? */ |
|
2185 if (unlikely((status & rtl8139_intr_mask) == 0)) |
|
2186 goto out; |
|
2187 |
|
2188 handled = 1; |
|
2189 |
|
2190 /* h/w no longer present (hotplug?) or major error, bail */ |
|
2191 if (unlikely(status == 0xFFFF)) |
|
2192 goto out; |
|
2193 |
|
2194 /* close possible race's with dev_close */ |
|
2195 if (unlikely(!netif_running(dev))) { |
|
2196 RTL_W16 (IntrMask, 0); |
|
2197 goto out; |
|
2198 } |
|
2199 |
|
2200 /* Acknowledge all of the current interrupt sources ASAP, but |
|
2201 an first get an additional status bit from CSCR. */ |
|
2202 if (unlikely(status & RxUnderrun)) |
|
2203 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit; |
|
2204 |
|
2205 ackstat = status & ~(RxAckBits | TxErr); |
|
2206 if (ackstat) |
|
2207 RTL_W16 (IntrStatus, ackstat); |
|
2208 |
|
2209 /* Receive packets are processed by poll routine. |
|
2210 If not running start it now. */ |
|
2211 if (status & RxAckBits){ |
|
2212 if (napi_schedule_prep(&tp->napi)) { |
|
2213 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask); |
|
2214 __napi_schedule(&tp->napi); |
|
2215 } |
|
2216 } |
|
2217 |
|
2218 /* Check uncommon events with one test. */ |
|
2219 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr))) |
|
2220 rtl8139_weird_interrupt (dev, tp, ioaddr, |
|
2221 status, link_changed); |
|
2222 |
|
2223 if (status & (TxOK | TxErr)) { |
|
2224 rtl8139_tx_interrupt (dev, tp, ioaddr); |
|
2225 if (status & TxErr) |
|
2226 RTL_W16 (IntrStatus, TxErr); |
|
2227 } |
|
2228 out: |
|
2229 spin_unlock (&tp->lock); |
|
2230 |
|
2231 netdev_dbg(dev, "exiting interrupt, intr_status=%#4.4x\n", |
|
2232 RTL_R16(IntrStatus)); |
|
2233 return IRQ_RETVAL(handled); |
|
2234 } |
|
2235 |
|
2236 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
2237 /* |
|
2238 * Polling receive - used by netconsole and other diagnostic tools |
|
2239 * to allow network i/o with interrupts disabled. |
|
2240 */ |
|
2241 static void rtl8139_poll_controller(struct net_device *dev) |
|
2242 { |
|
2243 disable_irq_nosync(dev->irq); |
|
2244 rtl8139_interrupt(dev->irq, dev); |
|
2245 enable_irq(dev->irq); |
|
2246 } |
|
2247 #endif |
|
2248 |
|
2249 static int rtl8139_set_mac_address(struct net_device *dev, void *p) |
|
2250 { |
|
2251 struct rtl8139_private *tp = netdev_priv(dev); |
|
2252 void __iomem *ioaddr = tp->mmio_addr; |
|
2253 struct sockaddr *addr = p; |
|
2254 |
|
2255 if (!is_valid_ether_addr(addr->sa_data)) |
|
2256 return -EADDRNOTAVAIL; |
|
2257 |
|
2258 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
|
2259 |
|
2260 spin_lock_irq(&tp->lock); |
|
2261 |
|
2262 RTL_W8_F(Cfg9346, Cfg9346_Unlock); |
|
2263 RTL_W32_F(MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0))); |
|
2264 RTL_W32_F(MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4))); |
|
2265 RTL_W8_F(Cfg9346, Cfg9346_Lock); |
|
2266 |
|
2267 spin_unlock_irq(&tp->lock); |
|
2268 |
|
2269 return 0; |
|
2270 } |
|
2271 |
|
2272 static int rtl8139_close (struct net_device *dev) |
|
2273 { |
|
2274 struct rtl8139_private *tp = netdev_priv(dev); |
|
2275 void __iomem *ioaddr = tp->mmio_addr; |
|
2276 unsigned long flags; |
|
2277 |
|
2278 netif_stop_queue(dev); |
|
2279 napi_disable(&tp->napi); |
|
2280 |
|
2281 netif_dbg(tp, ifdown, dev, "Shutting down ethercard, status was 0x%04x\n", |
|
2282 RTL_R16(IntrStatus)); |
|
2283 |
|
2284 spin_lock_irqsave (&tp->lock, flags); |
|
2285 |
|
2286 /* Stop the chip's Tx and Rx DMA processes. */ |
|
2287 RTL_W8 (ChipCmd, 0); |
|
2288 |
|
2289 /* Disable interrupts by clearing the interrupt mask. */ |
|
2290 RTL_W16 (IntrMask, 0); |
|
2291 |
|
2292 /* Update the error counts. */ |
|
2293 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2294 RTL_W32 (RxMissed, 0); |
|
2295 |
|
2296 spin_unlock_irqrestore (&tp->lock, flags); |
|
2297 |
|
2298 free_irq (dev->irq, dev); |
|
2299 |
|
2300 rtl8139_tx_clear (tp); |
|
2301 |
|
2302 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
2303 tp->rx_ring, tp->rx_ring_dma); |
|
2304 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
2305 tp->tx_bufs, tp->tx_bufs_dma); |
|
2306 tp->rx_ring = NULL; |
|
2307 tp->tx_bufs = NULL; |
|
2308 |
|
2309 /* Green! Put the chip in low-power mode. */ |
|
2310 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
2311 |
|
2312 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
2313 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */ |
|
2314 |
|
2315 return 0; |
|
2316 } |
|
2317 |
|
2318 |
|
2319 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to |
|
2320 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and |
|
2321 other threads or interrupts aren't messing with the 8139. */ |
|
2322 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
|
2323 { |
|
2324 struct rtl8139_private *tp = netdev_priv(dev); |
|
2325 void __iomem *ioaddr = tp->mmio_addr; |
|
2326 |
|
2327 spin_lock_irq(&tp->lock); |
|
2328 if (rtl_chip_info[tp->chipset].flags & HasLWake) { |
|
2329 u8 cfg3 = RTL_R8 (Config3); |
|
2330 u8 cfg5 = RTL_R8 (Config5); |
|
2331 |
|
2332 wol->supported = WAKE_PHY | WAKE_MAGIC |
|
2333 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; |
|
2334 |
|
2335 wol->wolopts = 0; |
|
2336 if (cfg3 & Cfg3_LinkUp) |
|
2337 wol->wolopts |= WAKE_PHY; |
|
2338 if (cfg3 & Cfg3_Magic) |
|
2339 wol->wolopts |= WAKE_MAGIC; |
|
2340 /* (KON)FIXME: See how netdev_set_wol() handles the |
|
2341 following constants. */ |
|
2342 if (cfg5 & Cfg5_UWF) |
|
2343 wol->wolopts |= WAKE_UCAST; |
|
2344 if (cfg5 & Cfg5_MWF) |
|
2345 wol->wolopts |= WAKE_MCAST; |
|
2346 if (cfg5 & Cfg5_BWF) |
|
2347 wol->wolopts |= WAKE_BCAST; |
|
2348 } |
|
2349 spin_unlock_irq(&tp->lock); |
|
2350 } |
|
2351 |
|
2352 |
|
2353 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes |
|
2354 that wol points to kernel memory and other threads or interrupts |
|
2355 aren't messing with the 8139. */ |
|
2356 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
|
2357 { |
|
2358 struct rtl8139_private *tp = netdev_priv(dev); |
|
2359 void __iomem *ioaddr = tp->mmio_addr; |
|
2360 u32 support; |
|
2361 u8 cfg3, cfg5; |
|
2362 |
|
2363 support = ((rtl_chip_info[tp->chipset].flags & HasLWake) |
|
2364 ? (WAKE_PHY | WAKE_MAGIC |
|
2365 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST) |
|
2366 : 0); |
|
2367 if (wol->wolopts & ~support) |
|
2368 return -EINVAL; |
|
2369 |
|
2370 spin_lock_irq(&tp->lock); |
|
2371 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic); |
|
2372 if (wol->wolopts & WAKE_PHY) |
|
2373 cfg3 |= Cfg3_LinkUp; |
|
2374 if (wol->wolopts & WAKE_MAGIC) |
|
2375 cfg3 |= Cfg3_Magic; |
|
2376 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
2377 RTL_W8 (Config3, cfg3); |
|
2378 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
2379 |
|
2380 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF); |
|
2381 /* (KON)FIXME: These are untested. We may have to set the |
|
2382 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no |
|
2383 documentation. */ |
|
2384 if (wol->wolopts & WAKE_UCAST) |
|
2385 cfg5 |= Cfg5_UWF; |
|
2386 if (wol->wolopts & WAKE_MCAST) |
|
2387 cfg5 |= Cfg5_MWF; |
|
2388 if (wol->wolopts & WAKE_BCAST) |
|
2389 cfg5 |= Cfg5_BWF; |
|
2390 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */ |
|
2391 spin_unlock_irq(&tp->lock); |
|
2392 |
|
2393 return 0; |
|
2394 } |
|
2395 |
|
2396 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
|
2397 { |
|
2398 struct rtl8139_private *tp = netdev_priv(dev); |
|
2399 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
|
2400 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
|
2401 strlcpy(info->bus_info, pci_name(tp->pci_dev), sizeof(info->bus_info)); |
|
2402 info->regdump_len = tp->regs_len; |
|
2403 } |
|
2404 |
|
2405 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
|
2406 { |
|
2407 struct rtl8139_private *tp = netdev_priv(dev); |
|
2408 spin_lock_irq(&tp->lock); |
|
2409 mii_ethtool_gset(&tp->mii, cmd); |
|
2410 spin_unlock_irq(&tp->lock); |
|
2411 return 0; |
|
2412 } |
|
2413 |
|
2414 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
|
2415 { |
|
2416 struct rtl8139_private *tp = netdev_priv(dev); |
|
2417 int rc; |
|
2418 spin_lock_irq(&tp->lock); |
|
2419 rc = mii_ethtool_sset(&tp->mii, cmd); |
|
2420 spin_unlock_irq(&tp->lock); |
|
2421 return rc; |
|
2422 } |
|
2423 |
|
2424 static int rtl8139_nway_reset(struct net_device *dev) |
|
2425 { |
|
2426 struct rtl8139_private *tp = netdev_priv(dev); |
|
2427 return mii_nway_restart(&tp->mii); |
|
2428 } |
|
2429 |
|
2430 static u32 rtl8139_get_link(struct net_device *dev) |
|
2431 { |
|
2432 struct rtl8139_private *tp = netdev_priv(dev); |
|
2433 return mii_link_ok(&tp->mii); |
|
2434 } |
|
2435 |
|
2436 static u32 rtl8139_get_msglevel(struct net_device *dev) |
|
2437 { |
|
2438 struct rtl8139_private *tp = netdev_priv(dev); |
|
2439 return tp->msg_enable; |
|
2440 } |
|
2441 |
|
2442 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum) |
|
2443 { |
|
2444 struct rtl8139_private *tp = netdev_priv(dev); |
|
2445 tp->msg_enable = datum; |
|
2446 } |
|
2447 |
|
2448 static int rtl8139_get_regs_len(struct net_device *dev) |
|
2449 { |
|
2450 struct rtl8139_private *tp; |
|
2451 /* TODO: we are too slack to do reg dumping for pio, for now */ |
|
2452 if (use_io) |
|
2453 return 0; |
|
2454 tp = netdev_priv(dev); |
|
2455 return tp->regs_len; |
|
2456 } |
|
2457 |
|
2458 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) |
|
2459 { |
|
2460 struct rtl8139_private *tp; |
|
2461 |
|
2462 /* TODO: we are too slack to do reg dumping for pio, for now */ |
|
2463 if (use_io) |
|
2464 return; |
|
2465 tp = netdev_priv(dev); |
|
2466 |
|
2467 regs->version = RTL_REGS_VER; |
|
2468 |
|
2469 spin_lock_irq(&tp->lock); |
|
2470 memcpy_fromio(regbuf, tp->mmio_addr, regs->len); |
|
2471 spin_unlock_irq(&tp->lock); |
|
2472 } |
|
2473 |
|
2474 static int rtl8139_get_sset_count(struct net_device *dev, int sset) |
|
2475 { |
|
2476 switch (sset) { |
|
2477 case ETH_SS_STATS: |
|
2478 return RTL_NUM_STATS; |
|
2479 default: |
|
2480 return -EOPNOTSUPP; |
|
2481 } |
|
2482 } |
|
2483 |
|
2484 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) |
|
2485 { |
|
2486 struct rtl8139_private *tp = netdev_priv(dev); |
|
2487 |
|
2488 data[0] = tp->xstats.early_rx; |
|
2489 data[1] = tp->xstats.tx_buf_mapped; |
|
2490 data[2] = tp->xstats.tx_timeouts; |
|
2491 data[3] = tp->xstats.rx_lost_in_ring; |
|
2492 } |
|
2493 |
|
2494 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
|
2495 { |
|
2496 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); |
|
2497 } |
|
2498 |
|
2499 static const struct ethtool_ops rtl8139_ethtool_ops = { |
|
2500 .get_drvinfo = rtl8139_get_drvinfo, |
|
2501 .get_settings = rtl8139_get_settings, |
|
2502 .set_settings = rtl8139_set_settings, |
|
2503 .get_regs_len = rtl8139_get_regs_len, |
|
2504 .get_regs = rtl8139_get_regs, |
|
2505 .nway_reset = rtl8139_nway_reset, |
|
2506 .get_link = rtl8139_get_link, |
|
2507 .get_msglevel = rtl8139_get_msglevel, |
|
2508 .set_msglevel = rtl8139_set_msglevel, |
|
2509 .get_wol = rtl8139_get_wol, |
|
2510 .set_wol = rtl8139_set_wol, |
|
2511 .get_strings = rtl8139_get_strings, |
|
2512 .get_sset_count = rtl8139_get_sset_count, |
|
2513 .get_ethtool_stats = rtl8139_get_ethtool_stats, |
|
2514 }; |
|
2515 |
|
2516 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
|
2517 { |
|
2518 struct rtl8139_private *tp = netdev_priv(dev); |
|
2519 int rc; |
|
2520 |
|
2521 if (!netif_running(dev)) |
|
2522 return -EINVAL; |
|
2523 |
|
2524 spin_lock_irq(&tp->lock); |
|
2525 rc = generic_mii_ioctl(&tp->mii, if_mii(rq), cmd, NULL); |
|
2526 spin_unlock_irq(&tp->lock); |
|
2527 |
|
2528 return rc; |
|
2529 } |
|
2530 |
|
2531 |
|
2532 static struct rtnl_link_stats64 * |
|
2533 rtl8139_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
|
2534 { |
|
2535 struct rtl8139_private *tp = netdev_priv(dev); |
|
2536 void __iomem *ioaddr = tp->mmio_addr; |
|
2537 unsigned long flags; |
|
2538 unsigned int start; |
|
2539 |
|
2540 if (netif_running(dev)) { |
|
2541 spin_lock_irqsave (&tp->lock, flags); |
|
2542 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2543 RTL_W32 (RxMissed, 0); |
|
2544 spin_unlock_irqrestore (&tp->lock, flags); |
|
2545 } |
|
2546 |
|
2547 netdev_stats_to_stats64(stats, &dev->stats); |
|
2548 |
|
2549 do { |
|
2550 start = u64_stats_fetch_begin_bh(&tp->rx_stats.syncp); |
|
2551 stats->rx_packets = tp->rx_stats.packets; |
|
2552 stats->rx_bytes = tp->rx_stats.bytes; |
|
2553 } while (u64_stats_fetch_retry_bh(&tp->rx_stats.syncp, start)); |
|
2554 |
|
2555 do { |
|
2556 start = u64_stats_fetch_begin_bh(&tp->tx_stats.syncp); |
|
2557 stats->tx_packets = tp->tx_stats.packets; |
|
2558 stats->tx_bytes = tp->tx_stats.bytes; |
|
2559 } while (u64_stats_fetch_retry_bh(&tp->tx_stats.syncp, start)); |
|
2560 |
|
2561 return stats; |
|
2562 } |
|
2563 |
|
2564 /* Set or clear the multicast filter for this adaptor. |
|
2565 This routine is not state sensitive and need not be SMP locked. */ |
|
2566 |
|
2567 static void __set_rx_mode (struct net_device *dev) |
|
2568 { |
|
2569 struct rtl8139_private *tp = netdev_priv(dev); |
|
2570 void __iomem *ioaddr = tp->mmio_addr; |
|
2571 u32 mc_filter[2]; /* Multicast hash filter */ |
|
2572 int rx_mode; |
|
2573 u32 tmp; |
|
2574 |
|
2575 netdev_dbg(dev, "rtl8139_set_rx_mode(%04x) done -- Rx config %08x\n", |
|
2576 dev->flags, RTL_R32(RxConfig)); |
|
2577 |
|
2578 /* Note: do not reorder, GCC is clever about common statements. */ |
|
2579 if (dev->flags & IFF_PROMISC) { |
|
2580 rx_mode = |
|
2581 AcceptBroadcast | AcceptMulticast | AcceptMyPhys | |
|
2582 AcceptAllPhys; |
|
2583 mc_filter[1] = mc_filter[0] = 0xffffffff; |
|
2584 } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
|
2585 (dev->flags & IFF_ALLMULTI)) { |
|
2586 /* Too many to filter perfectly -- accept all multicasts. */ |
|
2587 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; |
|
2588 mc_filter[1] = mc_filter[0] = 0xffffffff; |
|
2589 } else { |
|
2590 struct netdev_hw_addr *ha; |
|
2591 rx_mode = AcceptBroadcast | AcceptMyPhys; |
|
2592 mc_filter[1] = mc_filter[0] = 0; |
|
2593 netdev_for_each_mc_addr(ha, dev) { |
|
2594 int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; |
|
2595 |
|
2596 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); |
|
2597 rx_mode |= AcceptMulticast; |
|
2598 } |
|
2599 } |
|
2600 |
|
2601 if (dev->features & NETIF_F_RXALL) |
|
2602 rx_mode |= (AcceptErr | AcceptRunt); |
|
2603 |
|
2604 /* We can safely update without stopping the chip. */ |
|
2605 tmp = rtl8139_rx_config | rx_mode; |
|
2606 if (tp->rx_config != tmp) { |
|
2607 RTL_W32_F (RxConfig, tmp); |
|
2608 tp->rx_config = tmp; |
|
2609 } |
|
2610 RTL_W32_F (MAR0 + 0, mc_filter[0]); |
|
2611 RTL_W32_F (MAR0 + 4, mc_filter[1]); |
|
2612 } |
|
2613 |
|
2614 static void rtl8139_set_rx_mode (struct net_device *dev) |
|
2615 { |
|
2616 unsigned long flags; |
|
2617 struct rtl8139_private *tp = netdev_priv(dev); |
|
2618 |
|
2619 spin_lock_irqsave (&tp->lock, flags); |
|
2620 __set_rx_mode(dev); |
|
2621 spin_unlock_irqrestore (&tp->lock, flags); |
|
2622 } |
|
2623 |
|
2624 #ifdef CONFIG_PM |
|
2625 |
|
2626 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state) |
|
2627 { |
|
2628 struct net_device *dev = pci_get_drvdata (pdev); |
|
2629 struct rtl8139_private *tp = netdev_priv(dev); |
|
2630 void __iomem *ioaddr = tp->mmio_addr; |
|
2631 unsigned long flags; |
|
2632 |
|
2633 pci_save_state (pdev); |
|
2634 |
|
2635 if (!netif_running (dev)) |
|
2636 return 0; |
|
2637 |
|
2638 netif_device_detach (dev); |
|
2639 |
|
2640 spin_lock_irqsave (&tp->lock, flags); |
|
2641 |
|
2642 /* Disable interrupts, stop Tx and Rx. */ |
|
2643 RTL_W16 (IntrMask, 0); |
|
2644 RTL_W8 (ChipCmd, 0); |
|
2645 |
|
2646 /* Update the error counts. */ |
|
2647 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2648 RTL_W32 (RxMissed, 0); |
|
2649 |
|
2650 spin_unlock_irqrestore (&tp->lock, flags); |
|
2651 |
|
2652 pci_set_power_state (pdev, PCI_D3hot); |
|
2653 |
|
2654 return 0; |
|
2655 } |
|
2656 |
|
2657 |
|
2658 static int rtl8139_resume (struct pci_dev *pdev) |
|
2659 { |
|
2660 struct net_device *dev = pci_get_drvdata (pdev); |
|
2661 |
|
2662 pci_restore_state (pdev); |
|
2663 if (!netif_running (dev)) |
|
2664 return 0; |
|
2665 pci_set_power_state (pdev, PCI_D0); |
|
2666 rtl8139_init_ring (dev); |
|
2667 rtl8139_hw_start (dev); |
|
2668 netif_device_attach (dev); |
|
2669 return 0; |
|
2670 } |
|
2671 |
|
2672 #endif /* CONFIG_PM */ |
|
2673 |
|
2674 |
|
2675 static struct pci_driver rtl8139_pci_driver = { |
|
2676 .name = DRV_NAME, |
|
2677 .id_table = rtl8139_pci_tbl, |
|
2678 .probe = rtl8139_init_one, |
|
2679 .remove = __devexit_p(rtl8139_remove_one), |
|
2680 #ifdef CONFIG_PM |
|
2681 .suspend = rtl8139_suspend, |
|
2682 .resume = rtl8139_resume, |
|
2683 #endif /* CONFIG_PM */ |
|
2684 }; |
|
2685 |
|
2686 |
|
2687 static int __init rtl8139_init_module (void) |
|
2688 { |
|
2689 /* when we're a module, we always print a version message, |
|
2690 * even if no 8139 board is found. |
|
2691 */ |
|
2692 #ifdef MODULE |
|
2693 pr_info(RTL8139_DRIVER_NAME "\n"); |
|
2694 #endif |
|
2695 |
|
2696 return pci_register_driver(&rtl8139_pci_driver); |
|
2697 } |
|
2698 |
|
2699 |
|
2700 static void __exit rtl8139_cleanup_module (void) |
|
2701 { |
|
2702 pci_unregister_driver (&rtl8139_pci_driver); |
|
2703 } |
|
2704 |
|
2705 |
|
2706 module_init(rtl8139_init_module); |
|
2707 module_exit(rtl8139_cleanup_module); |