1 | /* Advanced Micro Devices Inc. AMD8111E Linux Network Driver |
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2 | * Copyright (C) 2004 Advanced Micro Devices |
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3 | * Copyright (C) 2005 Liu Tao <liutao1980@gmail.com> [etherboot port] |
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4 | * |
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5 | * Copyright 2001,2002 Jeff Garzik <jgarzik@mandrakesoft.com> [ 8139cp.c,tg3.c ] |
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6 | * Copyright (C) 2001, 2002 David S. Miller (davem@redhat.com)[ tg3.c] |
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7 | * Copyright 1996-1999 Thomas Bogendoerfer [ pcnet32.c ] |
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8 | * Derived from the lance driver written 1993,1994,1995 by Donald Becker. |
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9 | * Copyright 1993 United States Government as represented by the |
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10 | * Director, National Security Agency.[ pcnet32.c ] |
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11 | * Carsten Langgaard, carstenl@mips.com [ pcnet32.c ] |
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12 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. |
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13 | * |
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14 | * |
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15 | * This program is free software; you can redistribute it and/or modify |
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16 | * it under the terms of the GNU General Public License as published by |
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17 | * the Free Software Foundation; either version 2 of the License, or |
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18 | * (at your option) any later version. |
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19 | * |
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20 | * This program is distributed in the hope that it will be useful, |
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21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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23 | * GNU General Public License for more details. |
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24 | * |
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25 | * You should have received a copy of the GNU General Public License |
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26 | * along with this program; if not, write to the Free Software |
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27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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28 | * USA |
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29 | */ |
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30 | |
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31 | FILE_LICENCE ( GPL2_OR_LATER ); |
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32 | |
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33 | #include "etherboot.h" |
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34 | #include "nic.h" |
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35 | #include "mii.h" |
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36 | #include <gpxe/pci.h> |
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37 | #include <gpxe/ethernet.h> |
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38 | #include "string.h" |
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39 | #include "stdint.h" |
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40 | #include "amd8111e.h" |
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41 | |
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42 | |
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43 | /* driver definitions */ |
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44 | #define NUM_TX_SLOTS 2 |
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45 | #define NUM_RX_SLOTS 4 |
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46 | #define TX_SLOTS_MASK 1 |
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47 | #define RX_SLOTS_MASK 3 |
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48 | |
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49 | #define TX_BUF_LEN 1536 |
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50 | #define RX_BUF_LEN 1536 |
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51 | |
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52 | #define TX_PKT_LEN_MAX (ETH_FRAME_LEN - ETH_HLEN) |
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53 | #define RX_PKT_LEN_MIN 60 |
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54 | #define RX_PKT_LEN_MAX ETH_FRAME_LEN |
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55 | |
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56 | #define TX_TIMEOUT 3000 |
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57 | #define TX_PROCESS_TIME 10 |
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58 | #define TX_RETRY (TX_TIMEOUT / TX_PROCESS_TIME) |
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59 | |
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60 | #define PHY_RW_RETRY 10 |
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61 | |
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62 | |
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63 | struct amd8111e_tx_desc { |
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64 | u16 buf_len; |
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65 | u16 tx_flags; |
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66 | u16 tag_ctrl_info; |
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67 | u16 tag_ctrl_cmd; |
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68 | u32 buf_phy_addr; |
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69 | u32 reserved; |
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70 | }; |
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71 | |
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72 | struct amd8111e_rx_desc { |
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73 | u32 reserved; |
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74 | u16 msg_len; |
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75 | u16 tag_ctrl_info; |
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76 | u16 buf_len; |
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77 | u16 rx_flags; |
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78 | u32 buf_phy_addr; |
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79 | }; |
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80 | |
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81 | struct eth_frame { |
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82 | u8 dst_addr[ETH_ALEN]; |
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83 | u8 src_addr[ETH_ALEN]; |
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84 | u16 type; |
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85 | u8 data[ETH_FRAME_LEN - ETH_HLEN]; |
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86 | } __attribute__((packed)); |
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87 | |
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88 | struct amd8111e_priv { |
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89 | struct amd8111e_tx_desc tx_ring[NUM_TX_SLOTS]; |
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90 | struct amd8111e_rx_desc rx_ring[NUM_RX_SLOTS]; |
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91 | unsigned char tx_buf[NUM_TX_SLOTS][TX_BUF_LEN]; |
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92 | unsigned char rx_buf[NUM_RX_SLOTS][RX_BUF_LEN]; |
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93 | unsigned long tx_idx, rx_idx; |
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94 | int tx_consistent; |
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95 | |
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96 | char opened; |
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97 | char link; |
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98 | char speed; |
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99 | char duplex; |
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100 | int ext_phy_addr; |
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101 | u32 ext_phy_id; |
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102 | |
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103 | struct pci_device *pdev; |
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104 | struct nic *nic; |
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105 | void *mmio; |
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106 | }; |
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107 | |
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108 | static struct amd8111e_priv amd8111e; |
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109 | |
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110 | |
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111 | /******************************************************** |
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112 | * locale functions * |
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113 | ********************************************************/ |
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114 | static void amd8111e_init_hw_default(struct amd8111e_priv *lp); |
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115 | static int amd8111e_start(struct amd8111e_priv *lp); |
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116 | static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val); |
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117 | #if 0 |
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118 | static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val); |
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119 | #endif |
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120 | static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp); |
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121 | static void amd8111e_disable_interrupt(struct amd8111e_priv *lp); |
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122 | static void amd8111e_enable_interrupt(struct amd8111e_priv *lp); |
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123 | static void amd8111e_force_interrupt(struct amd8111e_priv *lp); |
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124 | static int amd8111e_get_mac_address(struct amd8111e_priv *lp); |
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125 | static int amd8111e_init_rx_ring(struct amd8111e_priv *lp); |
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126 | static int amd8111e_init_tx_ring(struct amd8111e_priv *lp); |
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127 | static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index); |
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128 | static void amd8111e_wait_link(struct amd8111e_priv *lp); |
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129 | static void amd8111e_poll_link(struct amd8111e_priv *lp); |
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130 | static void amd8111e_restart(struct amd8111e_priv *lp); |
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131 | |
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132 | |
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133 | /* |
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134 | * This function clears necessary the device registers. |
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135 | */ |
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136 | static void amd8111e_init_hw_default(struct amd8111e_priv *lp) |
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137 | { |
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138 | unsigned int reg_val; |
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139 | void *mmio = lp->mmio; |
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140 | |
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141 | /* stop the chip */ |
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142 | writel(RUN, mmio + CMD0); |
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143 | |
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144 | /* Clear RCV_RING_BASE_ADDR */ |
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145 | writel(0, mmio + RCV_RING_BASE_ADDR0); |
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146 | |
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147 | /* Clear XMT_RING_BASE_ADDR */ |
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148 | writel(0, mmio + XMT_RING_BASE_ADDR0); |
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149 | writel(0, mmio + XMT_RING_BASE_ADDR1); |
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150 | writel(0, mmio + XMT_RING_BASE_ADDR2); |
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151 | writel(0, mmio + XMT_RING_BASE_ADDR3); |
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152 | |
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153 | /* Clear CMD0 */ |
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154 | writel(CMD0_CLEAR, mmio + CMD0); |
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155 | |
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156 | /* Clear CMD2 */ |
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157 | writel(CMD2_CLEAR, mmio + CMD2); |
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158 | |
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159 | /* Clear CMD7 */ |
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160 | writel(CMD7_CLEAR, mmio + CMD7); |
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161 | |
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162 | /* Clear DLY_INT_A and DLY_INT_B */ |
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163 | writel(0x0, mmio + DLY_INT_A); |
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164 | writel(0x0, mmio + DLY_INT_B); |
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165 | |
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166 | /* Clear FLOW_CONTROL */ |
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167 | writel(0x0, mmio + FLOW_CONTROL); |
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168 | |
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169 | /* Clear INT0 write 1 to clear register */ |
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170 | reg_val = readl(mmio + INT0); |
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171 | writel(reg_val, mmio + INT0); |
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172 | |
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173 | /* Clear STVAL */ |
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174 | writel(0x0, mmio + STVAL); |
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175 | |
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176 | /* Clear INTEN0 */ |
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177 | writel(INTEN0_CLEAR, mmio + INTEN0); |
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178 | |
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179 | /* Clear LADRF */ |
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180 | writel(0x0, mmio + LADRF); |
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181 | |
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182 | /* Set SRAM_SIZE & SRAM_BOUNDARY registers */ |
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183 | writel(0x80010, mmio + SRAM_SIZE); |
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184 | |
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185 | /* Clear RCV_RING0_LEN */ |
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186 | writel(0x0, mmio + RCV_RING_LEN0); |
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187 | |
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188 | /* Clear XMT_RING0/1/2/3_LEN */ |
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189 | writel(0x0, mmio + XMT_RING_LEN0); |
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190 | writel(0x0, mmio + XMT_RING_LEN1); |
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191 | writel(0x0, mmio + XMT_RING_LEN2); |
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192 | writel(0x0, mmio + XMT_RING_LEN3); |
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193 | |
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194 | /* Clear XMT_RING_LIMIT */ |
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195 | writel(0x0, mmio + XMT_RING_LIMIT); |
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196 | |
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197 | /* Clear MIB */ |
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198 | writew(MIB_CLEAR, mmio + MIB_ADDR); |
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199 | |
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200 | /* Clear LARF */ |
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201 | writel( 0, mmio + LADRF); |
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202 | writel( 0, mmio + LADRF + 4); |
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203 | |
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204 | /* SRAM_SIZE register */ |
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205 | reg_val = readl(mmio + SRAM_SIZE); |
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206 | |
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207 | /* Set default value to CTRL1 Register */ |
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208 | writel(CTRL1_DEFAULT, mmio + CTRL1); |
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209 | |
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210 | /* To avoid PCI posting bug */ |
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211 | readl(mmio + CMD2); |
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212 | } |
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213 | |
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214 | /* |
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215 | * This function initializes the device registers and starts the device. |
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216 | */ |
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217 | static int amd8111e_start(struct amd8111e_priv *lp) |
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218 | { |
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219 | struct nic *nic = lp->nic; |
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220 | void *mmio = lp->mmio; |
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221 | int i, reg_val; |
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222 | |
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223 | /* stop the chip */ |
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224 | writel(RUN, mmio + CMD0); |
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225 | |
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226 | /* AUTOPOLL0 Register *//*TBD default value is 8100 in FPS */ |
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227 | writew(0x8100 | lp->ext_phy_addr, mmio + AUTOPOLL0); |
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228 | |
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229 | /* enable the port manager and set auto negotiation always */ |
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230 | writel(VAL1 | EN_PMGR, mmio + CMD3 ); |
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231 | writel(XPHYANE | XPHYRST, mmio + CTRL2); |
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232 | |
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233 | /* set control registers */ |
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234 | reg_val = readl(mmio + CTRL1); |
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235 | reg_val &= ~XMTSP_MASK; |
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236 | writel(reg_val | XMTSP_128 | CACHE_ALIGN, mmio + CTRL1); |
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237 | |
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238 | /* initialize tx and rx ring base addresses */ |
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239 | amd8111e_init_tx_ring(lp); |
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240 | amd8111e_init_rx_ring(lp); |
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241 | writel(virt_to_bus(lp->tx_ring), mmio + XMT_RING_BASE_ADDR0); |
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242 | writel(virt_to_bus(lp->rx_ring), mmio + RCV_RING_BASE_ADDR0); |
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243 | writew(NUM_TX_SLOTS, mmio + XMT_RING_LEN0); |
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244 | writew(NUM_RX_SLOTS, mmio + RCV_RING_LEN0); |
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245 | |
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246 | /* set default IPG to 96 */ |
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247 | writew(DEFAULT_IPG, mmio + IPG); |
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248 | writew(DEFAULT_IPG - IFS1_DELTA, mmio + IFS1); |
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249 | |
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250 | /* AutoPAD transmit, Retransmit on Underflow */ |
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251 | writel(VAL0 | APAD_XMT | REX_RTRY | REX_UFLO, mmio + CMD2); |
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252 | |
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253 | /* JUMBO disabled */ |
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254 | writel(JUMBO, mmio + CMD3); |
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255 | |
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256 | /* Setting the MAC address to the device */ |
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257 | for(i = 0; i < ETH_ALEN; i++) |
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258 | writeb(nic->node_addr[i], mmio + PADR + i); |
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259 | |
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260 | /* set RUN bit to start the chip, interrupt not enabled */ |
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261 | writel(VAL2 | RDMD0 | VAL0 | RUN, mmio + CMD0); |
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262 | |
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263 | /* To avoid PCI posting bug */ |
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264 | readl(mmio + CMD0); |
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265 | return 0; |
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266 | } |
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267 | |
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268 | /* |
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269 | This function will read the PHY registers. |
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270 | */ |
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271 | static int amd8111e_read_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 *val) |
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272 | { |
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273 | void *mmio = lp->mmio; |
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274 | unsigned int reg_val; |
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275 | unsigned int retry = PHY_RW_RETRY; |
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276 | |
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277 | reg_val = readl(mmio + PHY_ACCESS); |
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278 | while (reg_val & PHY_CMD_ACTIVE) |
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279 | reg_val = readl(mmio + PHY_ACCESS); |
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280 | |
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281 | writel(PHY_RD_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16), |
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282 | mmio + PHY_ACCESS); |
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283 | do { |
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284 | reg_val = readl(mmio + PHY_ACCESS); |
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285 | udelay(30); /* It takes 30 us to read/write data */ |
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286 | } while (--retry && (reg_val & PHY_CMD_ACTIVE)); |
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287 | |
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288 | if (reg_val & PHY_RD_ERR) { |
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289 | *val = 0; |
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290 | return -1; |
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291 | } |
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292 | |
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293 | *val = reg_val & 0xffff; |
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294 | return 0; |
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295 | } |
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296 | |
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297 | /* |
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298 | This function will write into PHY registers. |
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299 | */ |
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300 | #if 0 |
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301 | static int amd8111e_write_phy(struct amd8111e_priv *lp, int phy_addr, int reg, u32 val) |
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302 | { |
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303 | void *mmio = lp->mmio; |
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304 | unsigned int reg_val; |
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305 | unsigned int retry = PHY_RW_RETRY; |
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306 | |
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307 | reg_val = readl(mmio + PHY_ACCESS); |
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308 | while (reg_val & PHY_CMD_ACTIVE) |
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309 | reg_val = readl(mmio + PHY_ACCESS); |
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310 | |
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311 | writel(PHY_WR_CMD | ((phy_addr & 0x1f) << 21) | ((reg & 0x1f) << 16) | val, |
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312 | mmio + PHY_ACCESS); |
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313 | do { |
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314 | reg_val = readl(mmio + PHY_ACCESS); |
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315 | udelay(30); /* It takes 30 us to read/write the data */ |
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316 | } while (--retry && (reg_val & PHY_CMD_ACTIVE)); |
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317 | |
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318 | if(reg_val & PHY_RD_ERR) |
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319 | return -1; |
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320 | |
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321 | return 0; |
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322 | } |
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323 | #endif |
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324 | |
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325 | static void amd8111e_probe_ext_phy(struct amd8111e_priv *lp) |
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326 | { |
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327 | int i; |
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328 | |
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329 | lp->ext_phy_id = 0; |
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330 | lp->ext_phy_addr = 1; |
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331 | |
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332 | for (i = 0x1e; i >= 0; i--) { |
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333 | u32 id1, id2; |
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334 | |
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335 | if (amd8111e_read_phy(lp, i, MII_PHYSID1, &id1)) |
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336 | continue; |
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337 | if (amd8111e_read_phy(lp, i, MII_PHYSID2, &id2)) |
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338 | continue; |
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339 | lp->ext_phy_id = (id1 << 16) | id2; |
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340 | lp->ext_phy_addr = i; |
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341 | break; |
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342 | } |
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343 | |
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344 | if (lp->ext_phy_id) |
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345 | printf("Found MII PHY ID 0x%08x at address 0x%02x\n", |
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346 | (unsigned int) lp->ext_phy_id, lp->ext_phy_addr); |
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347 | else |
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348 | printf("Couldn't detect MII PHY, assuming address 0x01\n"); |
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349 | } |
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350 | |
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351 | static void amd8111e_disable_interrupt(struct amd8111e_priv *lp) |
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352 | { |
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353 | void *mmio = lp->mmio; |
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354 | unsigned int int0; |
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355 | |
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356 | writel(INTREN, mmio + CMD0); |
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357 | writel(INTEN0_CLEAR, mmio + INTEN0); |
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358 | int0 = readl(mmio + INT0); |
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359 | writel(int0, mmio + INT0); |
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360 | readl(mmio + INT0); |
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361 | } |
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362 | |
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363 | static void amd8111e_enable_interrupt(struct amd8111e_priv *lp) |
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364 | { |
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365 | void *mmio = lp->mmio; |
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366 | |
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367 | writel(VAL3 | LCINTEN | VAL1 | TINTEN0 | VAL0 | RINTEN0, mmio + INTEN0); |
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368 | writel(VAL0 | INTREN, mmio + CMD0); |
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369 | readl(mmio + CMD0); |
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370 | } |
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371 | |
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372 | static void amd8111e_force_interrupt(struct amd8111e_priv *lp) |
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373 | { |
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374 | void *mmio = lp->mmio; |
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375 | |
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376 | writel(VAL0 | UINTCMD, mmio + CMD0); |
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377 | readl(mmio + CMD0); |
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378 | } |
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379 | |
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380 | static int amd8111e_get_mac_address(struct amd8111e_priv *lp) |
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381 | { |
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382 | struct nic *nic = lp->nic; |
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383 | void *mmio = lp->mmio; |
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384 | int i; |
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385 | |
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386 | /* BIOS should have set mac address to PADR register, |
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387 | * so we read PADR to get it. |
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388 | */ |
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389 | for (i = 0; i < ETH_ALEN; i++) |
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390 | nic->node_addr[i] = readb(mmio + PADR + i); |
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391 | |
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392 | DBG ( "Ethernet addr: %s\n", eth_ntoa ( nic->node_addr ) ); |
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393 | |
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394 | return 0; |
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395 | } |
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396 | |
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397 | static int amd8111e_init_rx_ring(struct amd8111e_priv *lp) |
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398 | { |
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399 | int i; |
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400 | |
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401 | lp->rx_idx = 0; |
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402 | |
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403 | /* Initilaizing receive descriptors */ |
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404 | for (i = 0; i < NUM_RX_SLOTS; i++) { |
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405 | lp->rx_ring[i].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[i])); |
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406 | lp->rx_ring[i].buf_len = cpu_to_le16(RX_BUF_LEN); |
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407 | wmb(); |
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408 | lp->rx_ring[i].rx_flags = cpu_to_le16(OWN_BIT); |
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409 | } |
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410 | |
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411 | return 0; |
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412 | } |
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413 | |
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414 | static int amd8111e_init_tx_ring(struct amd8111e_priv *lp) |
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415 | { |
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416 | int i; |
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417 | |
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418 | lp->tx_idx = 0; |
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419 | lp->tx_consistent = 1; |
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420 | |
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421 | /* Initializing transmit descriptors */ |
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422 | for (i = 0; i < NUM_TX_SLOTS; i++) { |
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423 | lp->tx_ring[i].tx_flags = 0; |
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424 | lp->tx_ring[i].buf_phy_addr = 0; |
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425 | lp->tx_ring[i].buf_len = 0; |
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426 | } |
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427 | |
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428 | return 0; |
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429 | } |
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430 | |
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431 | static int amd8111e_wait_tx_ring(struct amd8111e_priv *lp, unsigned int index) |
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432 | { |
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433 | volatile u16 status; |
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434 | int retry = TX_RETRY; |
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435 | |
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436 | status = le16_to_cpu(lp->tx_ring[index].tx_flags); |
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437 | while (--retry && (status & OWN_BIT)) { |
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438 | mdelay(TX_PROCESS_TIME); |
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439 | status = le16_to_cpu(lp->tx_ring[index].tx_flags); |
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440 | } |
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441 | if (status & OWN_BIT) { |
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442 | printf("Error: tx slot %d timeout, stat = 0x%x\n", index, status); |
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443 | amd8111e_restart(lp); |
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444 | return -1; |
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445 | } |
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446 | |
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447 | return 0; |
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448 | } |
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449 | |
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450 | static void amd8111e_wait_link(struct amd8111e_priv *lp) |
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451 | { |
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452 | unsigned int status; |
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453 | u32 reg_val; |
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454 | |
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455 | do { |
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456 | /* read phy to update STAT0 register */ |
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457 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val); |
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458 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val); |
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459 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val); |
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460 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val); |
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461 | status = readl(lp->mmio + STAT0); |
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462 | } while (!(status & AUTONEG_COMPLETE) || !(status & LINK_STATS)); |
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463 | } |
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464 | |
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465 | static void amd8111e_poll_link(struct amd8111e_priv *lp) |
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466 | { |
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467 | unsigned int status, speed; |
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468 | u32 reg_val; |
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469 | |
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470 | if (!lp->link) { |
---|
471 | /* read phy to update STAT0 register */ |
---|
472 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMCR, ®_val); |
---|
473 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_BMSR, ®_val); |
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474 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_ADVERTISE, ®_val); |
---|
475 | amd8111e_read_phy(lp, lp->ext_phy_addr, MII_LPA, ®_val); |
---|
476 | status = readl(lp->mmio + STAT0); |
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477 | |
---|
478 | if (status & LINK_STATS) { |
---|
479 | lp->link = 1; |
---|
480 | speed = (status & SPEED_MASK) >> 7; |
---|
481 | if (speed == PHY_SPEED_100) |
---|
482 | lp->speed = 1; |
---|
483 | else |
---|
484 | lp->speed = 0; |
---|
485 | if (status & FULL_DPLX) |
---|
486 | lp->duplex = 1; |
---|
487 | else |
---|
488 | lp->duplex = 0; |
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489 | |
---|
490 | printf("Link is up: %s Mbps %s duplex\n", |
---|
491 | lp->speed ? "100" : "10", lp->duplex ? "full" : "half"); |
---|
492 | } |
---|
493 | } else { |
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494 | status = readl(lp->mmio + STAT0); |
---|
495 | if (!(status & LINK_STATS)) { |
---|
496 | lp->link = 0; |
---|
497 | printf("Link is down\n"); |
---|
498 | } |
---|
499 | } |
---|
500 | } |
---|
501 | |
---|
502 | static void amd8111e_restart(struct amd8111e_priv *lp) |
---|
503 | { |
---|
504 | printf("\nStarting nic...\n"); |
---|
505 | amd8111e_disable_interrupt(lp); |
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506 | amd8111e_init_hw_default(lp); |
---|
507 | amd8111e_probe_ext_phy(lp); |
---|
508 | amd8111e_get_mac_address(lp); |
---|
509 | amd8111e_start(lp); |
---|
510 | |
---|
511 | printf("Waiting link up...\n"); |
---|
512 | lp->link = 0; |
---|
513 | amd8111e_wait_link(lp); |
---|
514 | amd8111e_poll_link(lp); |
---|
515 | } |
---|
516 | |
---|
517 | |
---|
518 | /******************************************************** |
---|
519 | * Interface Functions * |
---|
520 | ********************************************************/ |
---|
521 | |
---|
522 | static void amd8111e_transmit(struct nic *nic, const char *dst_addr, |
---|
523 | unsigned int type, unsigned int size, const char *packet) |
---|
524 | { |
---|
525 | struct amd8111e_priv *lp = nic->priv_data; |
---|
526 | struct eth_frame *frame; |
---|
527 | unsigned int index; |
---|
528 | |
---|
529 | /* check packet size */ |
---|
530 | if (size > TX_PKT_LEN_MAX) { |
---|
531 | printf("amd8111e_transmit(): too large packet, drop\n"); |
---|
532 | return; |
---|
533 | } |
---|
534 | |
---|
535 | /* get tx slot */ |
---|
536 | index = lp->tx_idx; |
---|
537 | if (amd8111e_wait_tx_ring(lp, index)) |
---|
538 | return; |
---|
539 | |
---|
540 | /* fill frame */ |
---|
541 | frame = (struct eth_frame *)lp->tx_buf[index]; |
---|
542 | memset(frame->data, 0, TX_PKT_LEN_MAX); |
---|
543 | memcpy(frame->dst_addr, dst_addr, ETH_ALEN); |
---|
544 | memcpy(frame->src_addr, nic->node_addr, ETH_ALEN); |
---|
545 | frame->type = htons(type); |
---|
546 | memcpy(frame->data, packet, size); |
---|
547 | |
---|
548 | /* start xmit */ |
---|
549 | lp->tx_ring[index].buf_len = cpu_to_le16(ETH_HLEN + size); |
---|
550 | lp->tx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(frame)); |
---|
551 | wmb(); |
---|
552 | lp->tx_ring[index].tx_flags = |
---|
553 | cpu_to_le16(OWN_BIT | STP_BIT | ENP_BIT | ADD_FCS_BIT | LTINT_BIT); |
---|
554 | writel(VAL1 | TDMD0, lp->mmio + CMD0); |
---|
555 | readl(lp->mmio + CMD0); |
---|
556 | |
---|
557 | /* update slot pointer */ |
---|
558 | lp->tx_idx = (lp->tx_idx + 1) & TX_SLOTS_MASK; |
---|
559 | } |
---|
560 | |
---|
561 | static int amd8111e_poll(struct nic *nic, int retrieve) |
---|
562 | { |
---|
563 | /* return true if there's an ethernet packet ready to read */ |
---|
564 | /* nic->packet should contain data on return */ |
---|
565 | /* nic->packetlen should contain length of data */ |
---|
566 | |
---|
567 | struct amd8111e_priv *lp = nic->priv_data; |
---|
568 | u16 status, pkt_len; |
---|
569 | unsigned int index, pkt_ok; |
---|
570 | |
---|
571 | amd8111e_poll_link(lp); |
---|
572 | |
---|
573 | index = lp->rx_idx; |
---|
574 | status = le16_to_cpu(lp->rx_ring[index].rx_flags); |
---|
575 | pkt_len = le16_to_cpu(lp->rx_ring[index].msg_len) - 4; /* remove 4bytes FCS */ |
---|
576 | |
---|
577 | if (status & OWN_BIT) |
---|
578 | return 0; |
---|
579 | |
---|
580 | if (status & ERR_BIT) |
---|
581 | pkt_ok = 0; |
---|
582 | else if (!(status & STP_BIT)) |
---|
583 | pkt_ok = 0; |
---|
584 | else if (!(status & ENP_BIT)) |
---|
585 | pkt_ok = 0; |
---|
586 | else if (pkt_len < RX_PKT_LEN_MIN) |
---|
587 | pkt_ok = 0; |
---|
588 | else if (pkt_len > RX_PKT_LEN_MAX) |
---|
589 | pkt_ok = 0; |
---|
590 | else |
---|
591 | pkt_ok = 1; |
---|
592 | |
---|
593 | if (pkt_ok) { |
---|
594 | if (!retrieve) |
---|
595 | return 1; |
---|
596 | nic->packetlen = pkt_len; |
---|
597 | memcpy(nic->packet, lp->rx_buf[index], nic->packetlen); |
---|
598 | } |
---|
599 | |
---|
600 | lp->rx_ring[index].buf_phy_addr = cpu_to_le32(virt_to_bus(lp->rx_buf[index])); |
---|
601 | lp->rx_ring[index].buf_len = cpu_to_le16(RX_BUF_LEN); |
---|
602 | wmb(); |
---|
603 | lp->rx_ring[index].rx_flags = cpu_to_le16(OWN_BIT); |
---|
604 | writel(VAL2 | RDMD0, lp->mmio + CMD0); |
---|
605 | readl(lp->mmio + CMD0); |
---|
606 | |
---|
607 | lp->rx_idx = (lp->rx_idx + 1) & RX_SLOTS_MASK; |
---|
608 | return pkt_ok; |
---|
609 | } |
---|
610 | |
---|
611 | static void amd8111e_disable(struct nic *nic) |
---|
612 | { |
---|
613 | struct amd8111e_priv *lp = nic->priv_data; |
---|
614 | |
---|
615 | /* disable interrupt */ |
---|
616 | amd8111e_disable_interrupt(lp); |
---|
617 | |
---|
618 | /* stop chip */ |
---|
619 | amd8111e_init_hw_default(lp); |
---|
620 | |
---|
621 | /* unmap mmio */ |
---|
622 | iounmap(lp->mmio); |
---|
623 | |
---|
624 | /* update status */ |
---|
625 | lp->opened = 0; |
---|
626 | } |
---|
627 | |
---|
628 | static void amd8111e_irq(struct nic *nic, irq_action_t action) |
---|
629 | { |
---|
630 | struct amd8111e_priv *lp = nic->priv_data; |
---|
631 | |
---|
632 | switch (action) { |
---|
633 | case DISABLE: |
---|
634 | amd8111e_disable_interrupt(lp); |
---|
635 | break; |
---|
636 | case ENABLE: |
---|
637 | amd8111e_enable_interrupt(lp); |
---|
638 | break; |
---|
639 | case FORCE: |
---|
640 | amd8111e_force_interrupt(lp); |
---|
641 | break; |
---|
642 | } |
---|
643 | } |
---|
644 | |
---|
645 | static struct nic_operations amd8111e_operations = { |
---|
646 | .connect = dummy_connect, |
---|
647 | .poll = amd8111e_poll, |
---|
648 | .transmit = amd8111e_transmit, |
---|
649 | .irq = amd8111e_irq, |
---|
650 | }; |
---|
651 | |
---|
652 | static int amd8111e_probe(struct nic *nic, struct pci_device *pdev) |
---|
653 | { |
---|
654 | struct amd8111e_priv *lp = &amd8111e; |
---|
655 | unsigned long mmio_start, mmio_len; |
---|
656 | |
---|
657 | nic->ioaddr = pdev->ioaddr; |
---|
658 | nic->irqno = pdev->irq; |
---|
659 | |
---|
660 | mmio_start = pci_bar_start(pdev, PCI_BASE_ADDRESS_0); |
---|
661 | mmio_len = pci_bar_size(pdev, PCI_BASE_ADDRESS_0); |
---|
662 | |
---|
663 | memset(lp, 0, sizeof(*lp)); |
---|
664 | lp->pdev = pdev; |
---|
665 | lp->nic = nic; |
---|
666 | lp->mmio = ioremap(mmio_start, mmio_len); |
---|
667 | lp->opened = 1; |
---|
668 | adjust_pci_device(pdev); |
---|
669 | |
---|
670 | nic->priv_data = lp; |
---|
671 | |
---|
672 | amd8111e_restart(lp); |
---|
673 | |
---|
674 | nic->nic_op = &amd8111e_operations; |
---|
675 | return 1; |
---|
676 | } |
---|
677 | |
---|
678 | static struct pci_device_id amd8111e_nics[] = { |
---|
679 | PCI_ROM(0x1022, 0x7462, "amd8111e", "AMD8111E", 0), |
---|
680 | }; |
---|
681 | |
---|
682 | PCI_DRIVER ( amd8111e_driver, amd8111e_nics, PCI_NO_CLASS ); |
---|
683 | |
---|
684 | DRIVER ( "AMD8111E", nic_driver, pci_driver, amd8111e_driver, |
---|
685 | amd8111e_probe, amd8111e_disable ); |
---|
686 | |
---|
687 | /* |
---|
688 | * Local variables: |
---|
689 | * c-basic-offset: 8 |
---|
690 | * c-indent-level: 8 |
---|
691 | * tab-width: 8 |
---|
692 | * End: |
---|
693 | */ |
---|