1 | #include <machine/rtems-bsd-kernel-space.h> |
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2 | |
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3 | #include <rtems/bsd/local/opt_dpaa.h> |
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4 | |
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5 | /* Copyright 2008 - 2016 Freescale Semiconductor Inc. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * * Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * * Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * * Neither the name of Freescale Semiconductor nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * ALTERNATIVELY, this software may be distributed under the terms of the |
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19 | * GNU General Public License ("GPL") as published by the Free Software |
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20 | * Foundation, either version 2 of that License or (at your option) any |
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21 | * later version. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
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24 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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25 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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26 | * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
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27 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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28 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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29 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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30 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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32 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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33 | */ |
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34 | |
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35 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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36 | |
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37 | #include <linux/init.h> |
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38 | #include <linux/module.h> |
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39 | #include <linux/of_platform.h> |
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40 | #include <linux/of_mdio.h> |
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41 | #include <linux/of_net.h> |
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42 | #include <linux/io.h> |
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43 | #ifndef __rtems__ |
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44 | #include <linux/if_arp.h> |
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45 | #include <linux/if_vlan.h> |
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46 | #include <linux/icmp.h> |
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47 | #include <linux/ip.h> |
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48 | #include <linux/ipv6.h> |
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49 | #include <linux/udp.h> |
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50 | #include <linux/tcp.h> |
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51 | #include <linux/net.h> |
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52 | #include <linux/skbuff.h> |
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53 | #include <linux/etherdevice.h> |
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54 | #include <linux/if_ether.h> |
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55 | #include <linux/highmem.h> |
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56 | #include <linux/percpu.h> |
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57 | #include <linux/dma-mapping.h> |
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58 | #include <linux/sort.h> |
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59 | #endif /* __rtems__ */ |
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60 | #include <soc/fsl/bman.h> |
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61 | #include <soc/fsl/qman.h> |
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62 | |
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63 | #include "fman.h" |
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64 | #include "fman_port.h" |
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65 | #include "mac.h" |
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66 | #include "dpaa_eth.h" |
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67 | |
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68 | /* CREATE_TRACE_POINTS only needs to be defined once. Other dpaa files |
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69 | * using trace events only need to #include <trace/events/sched.h> |
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70 | */ |
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71 | #define CREATE_TRACE_POINTS |
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72 | #include "dpaa_eth_trace.h" |
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73 | |
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74 | static int debug = -1; |
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75 | module_param(debug, int, 0444); |
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76 | MODULE_PARM_DESC(debug, "Module/Driver verbosity level (0=none,...,16=all)"); |
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77 | |
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78 | static u16 tx_timeout = 1000; |
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79 | module_param(tx_timeout, ushort, 0444); |
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80 | MODULE_PARM_DESC(tx_timeout, "The Tx timeout in ms"); |
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81 | |
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82 | #define FM_FD_STAT_RX_ERRORS \ |
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83 | (FM_FD_ERR_DMA | FM_FD_ERR_PHYSICAL | \ |
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84 | FM_FD_ERR_SIZE | FM_FD_ERR_CLS_DISCARD | \ |
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85 | FM_FD_ERR_EXTRACTION | FM_FD_ERR_NO_SCHEME | \ |
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86 | FM_FD_ERR_PRS_TIMEOUT | FM_FD_ERR_PRS_ILL_INSTRUCT | \ |
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87 | FM_FD_ERR_PRS_HDR_ERR) |
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88 | |
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89 | #define FM_FD_STAT_TX_ERRORS \ |
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90 | (FM_FD_ERR_UNSUPPORTED_FORMAT | \ |
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91 | FM_FD_ERR_LENGTH | FM_FD_ERR_DMA) |
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92 | |
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93 | #define DPAA_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \ |
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94 | NETIF_MSG_LINK | NETIF_MSG_IFUP | \ |
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95 | NETIF_MSG_IFDOWN) |
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96 | |
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97 | #define DPAA_INGRESS_CS_THRESHOLD 0x10000000 |
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98 | /* Ingress congestion threshold on FMan ports |
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99 | * The size in bytes of the ingress tail-drop threshold on FMan ports. |
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100 | * Traffic piling up above this value will be rejected by QMan and discarded |
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101 | * by FMan. |
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102 | */ |
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103 | |
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104 | /* Size in bytes of the FQ taildrop threshold */ |
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105 | #define DPAA_FQ_TD 0x200000 |
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106 | |
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107 | #define DPAA_CS_THRESHOLD_1G 0x06000000 |
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108 | /* Egress congestion threshold on 1G ports, range 0x1000 .. 0x10000000 |
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109 | * The size in bytes of the egress Congestion State notification threshold on |
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110 | * 1G ports. The 1G dTSECs can quite easily be flooded by cores doing Tx in a |
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111 | * tight loop (e.g. by sending UDP datagrams at "while(1) speed"), |
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112 | * and the larger the frame size, the more acute the problem. |
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113 | * So we have to find a balance between these factors: |
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114 | * - avoiding the device staying congested for a prolonged time (risking |
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115 | * the netdev watchdog to fire - see also the tx_timeout module param); |
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116 | * - affecting performance of protocols such as TCP, which otherwise |
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117 | * behave well under the congestion notification mechanism; |
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118 | * - preventing the Tx cores from tightly-looping (as if the congestion |
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119 | * threshold was too low to be effective); |
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120 | * - running out of memory if the CS threshold is set too high. |
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121 | */ |
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122 | |
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123 | #define DPAA_CS_THRESHOLD_10G 0x10000000 |
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124 | /* The size in bytes of the egress Congestion State notification threshold on |
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125 | * 10G ports, range 0x1000 .. 0x10000000 |
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126 | */ |
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127 | |
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128 | /* Largest value that the FQD's OAL field can hold */ |
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129 | #define FSL_QMAN_MAX_OAL 127 |
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130 | |
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131 | /* Default alignment for start of data in an Rx FD */ |
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132 | #define DPAA_FD_DATA_ALIGNMENT 16 |
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133 | |
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134 | /* Values for the L3R field of the FM Parse Results |
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135 | */ |
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136 | /* L3 Type field: First IP Present IPv4 */ |
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137 | #define FM_L3_PARSE_RESULT_IPV4 0x8000 |
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138 | /* L3 Type field: First IP Present IPv6 */ |
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139 | #define FM_L3_PARSE_RESULT_IPV6 0x4000 |
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140 | /* Values for the L4R field of the FM Parse Results */ |
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141 | /* L4 Type field: UDP */ |
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142 | #define FM_L4_PARSE_RESULT_UDP 0x40 |
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143 | /* L4 Type field: TCP */ |
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144 | #define FM_L4_PARSE_RESULT_TCP 0x20 |
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145 | |
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146 | /* FD status field indicating whether the FM Parser has attempted to validate |
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147 | * the L4 csum of the frame. |
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148 | * Note that having this bit set doesn't necessarily imply that the checksum |
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149 | * is valid. One would have to check the parse results to find that out. |
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150 | */ |
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151 | #define FM_FD_STAT_L4CV 0x00000004 |
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152 | |
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153 | #define DPAA_SGT_MAX_ENTRIES 16 /* maximum number of entries in SG Table */ |
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154 | #define DPAA_BUFF_RELEASE_MAX 8 /* maximum number of buffers released at once */ |
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155 | |
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156 | #define FSL_DPAA_BPID_INV 0xff |
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157 | #define FSL_DPAA_ETH_MAX_BUF_COUNT 128 |
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158 | #define FSL_DPAA_ETH_REFILL_THRESHOLD 80 |
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159 | |
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160 | #define DPAA_TX_PRIV_DATA_SIZE 16 |
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161 | #define DPAA_PARSE_RESULTS_SIZE sizeof(struct fman_prs_result) |
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162 | #define DPAA_TIME_STAMP_SIZE 8 |
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163 | #define DPAA_HASH_RESULTS_SIZE 8 |
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164 | #define DPAA_RX_PRIV_DATA_SIZE (u16)(DPAA_TX_PRIV_DATA_SIZE + \ |
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165 | dpaa_rx_extra_headroom) |
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166 | |
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167 | #define DPAA_ETH_RX_QUEUES 128 |
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168 | |
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169 | #define DPAA_ENQUEUE_RETRIES 100000 |
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170 | |
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171 | enum port_type {RX, TX}; |
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172 | |
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173 | struct fm_port_fqs { |
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174 | struct dpaa_fq *tx_defq; |
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175 | struct dpaa_fq *tx_errq; |
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176 | struct dpaa_fq *rx_defq; |
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177 | struct dpaa_fq *rx_errq; |
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178 | }; |
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179 | |
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180 | /* All the dpa bps in use at any moment */ |
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181 | static struct dpaa_bp *dpaa_bp_array[BM_MAX_NUM_OF_POOLS]; |
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182 | |
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183 | /* The raw buffer size must be cacheline aligned */ |
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184 | #ifndef __rtems__ |
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185 | #define DPAA_BP_RAW_SIZE 4096 |
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186 | #else /* __rtems__ */ |
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187 | /* |
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188 | * FIXME: Support multiple buffer pools. |
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189 | */ |
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190 | #define DPAA_BP_RAW_SIZE 2048 |
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191 | |
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192 | /* |
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193 | * FIXME: 4 bytes would be enough for the mbuf pointer. However, jumbo receive |
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194 | * frames overwrite this area if < 64 bytes. |
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195 | */ |
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196 | #define DPAA_OUT_OF_BAND_SIZE 64 |
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197 | |
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198 | #define DPAA_MBUF_POINTER_OFFSET (DPAA_BP_RAW_SIZE - DPAA_OUT_OF_BAND_SIZE) |
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199 | #endif /* __rtems__ */ |
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200 | /* When using more than one buffer pool, the raw sizes are as follows: |
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201 | * 1 bp: 4KB |
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202 | * 2 bp: 2KB, 4KB |
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203 | * 3 bp: 1KB, 2KB, 4KB |
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204 | * 4 bp: 1KB, 2KB, 4KB, 8KB |
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205 | */ |
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206 | static inline size_t bpool_buffer_raw_size(u8 index, u8 cnt) |
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207 | { |
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208 | size_t res = DPAA_BP_RAW_SIZE / 4; |
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209 | u8 i; |
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210 | |
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211 | for (i = (cnt < 3) ? cnt : 3; i < 3 + index; i++) |
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212 | res *= 2; |
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213 | return res; |
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214 | } |
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215 | |
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216 | /* FMan-DMA requires 16-byte alignment for Rx buffers, but SKB_DATA_ALIGN is |
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217 | * even stronger (SMP_CACHE_BYTES-aligned), so we just get away with that, |
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218 | * via SKB_WITH_OVERHEAD(). We can't rely on netdev_alloc_frag() giving us |
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219 | * half-page-aligned buffers, so we reserve some more space for start-of-buffer |
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220 | * alignment. |
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221 | */ |
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222 | #ifndef __rtems__ |
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223 | #define dpaa_bp_size(raw_size) SKB_WITH_OVERHEAD((raw_size) - SMP_CACHE_BYTES) |
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224 | #else /* __rtems__ */ |
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225 | #define dpaa_bp_size(raw_size) DPAA_MBUF_POINTER_OFFSET |
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226 | #endif /* __rtems__ */ |
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227 | |
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228 | #ifndef __rtems__ |
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229 | static int dpaa_max_frm; |
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230 | #endif /* __rtems__ */ |
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231 | |
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232 | #ifndef __rtems__ |
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233 | static int dpaa_rx_extra_headroom; |
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234 | #else /* __rtems__ */ |
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235 | #define dpaa_rx_extra_headroom fman_get_rx_extra_headroom() |
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236 | #endif /* __rtems__ */ |
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237 | |
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238 | #define dpaa_get_max_mtu() \ |
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239 | (dpaa_max_frm - (VLAN_ETH_HLEN + ETH_FCS_LEN)) |
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240 | |
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241 | #ifndef __rtems__ |
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242 | static int dpaa_netdev_init(struct net_device *net_dev, |
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243 | const struct net_device_ops *dpaa_ops, |
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244 | u16 tx_timeout) |
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245 | { |
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246 | struct dpaa_priv *priv = netdev_priv(net_dev); |
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247 | struct device *dev = net_dev->dev.parent; |
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248 | struct dpaa_percpu_priv *percpu_priv; |
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249 | const u8 *mac_addr; |
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250 | int i, err; |
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251 | |
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252 | /* Although we access another CPU's private data here |
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253 | * we do it at initialization so it is safe |
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254 | */ |
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255 | for_each_possible_cpu(i) { |
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256 | percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
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257 | percpu_priv->net_dev = net_dev; |
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258 | } |
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259 | |
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260 | net_dev->netdev_ops = dpaa_ops; |
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261 | mac_addr = priv->mac_dev->addr; |
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262 | |
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263 | net_dev->mem_start = priv->mac_dev->res->start; |
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264 | net_dev->mem_end = priv->mac_dev->res->end; |
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265 | |
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266 | net_dev->min_mtu = ETH_MIN_MTU; |
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267 | net_dev->max_mtu = dpaa_get_max_mtu(); |
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268 | |
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269 | net_dev->hw_features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
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270 | NETIF_F_LLTX); |
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271 | |
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272 | net_dev->hw_features |= NETIF_F_SG | NETIF_F_HIGHDMA; |
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273 | /* The kernels enables GSO automatically, if we declare NETIF_F_SG. |
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274 | * For conformity, we'll still declare GSO explicitly. |
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275 | */ |
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276 | net_dev->features |= NETIF_F_GSO; |
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277 | net_dev->features |= NETIF_F_RXCSUM; |
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278 | |
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279 | net_dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
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280 | /* we do not want shared skbs on TX */ |
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281 | net_dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
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282 | |
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283 | net_dev->features |= net_dev->hw_features; |
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284 | net_dev->vlan_features = net_dev->features; |
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285 | |
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286 | memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len); |
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287 | memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len); |
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288 | |
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289 | net_dev->ethtool_ops = &dpaa_ethtool_ops; |
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290 | |
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291 | net_dev->needed_headroom = priv->tx_headroom; |
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292 | net_dev->watchdog_timeo = msecs_to_jiffies(tx_timeout); |
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293 | |
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294 | /* start without the RUNNING flag, phylib controls it later */ |
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295 | netif_carrier_off(net_dev); |
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296 | |
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297 | err = register_netdev(net_dev); |
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298 | if (err < 0) { |
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299 | dev_err(dev, "register_netdev() = %d\n", err); |
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300 | return err; |
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301 | } |
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302 | |
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303 | return 0; |
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304 | } |
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305 | #endif /* __rtems__ */ |
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306 | |
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307 | static int dpaa_stop(struct net_device *net_dev) |
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308 | { |
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309 | struct mac_device *mac_dev; |
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310 | struct dpaa_priv *priv; |
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311 | int i, err, error; |
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312 | |
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313 | priv = netdev_priv(net_dev); |
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314 | mac_dev = priv->mac_dev; |
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315 | |
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316 | #ifndef __rtems__ |
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317 | netif_tx_stop_all_queues(net_dev); |
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318 | #endif /* __rtems__ */ |
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319 | /* Allow the Fman (Tx) port to process in-flight frames before we |
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320 | * try switching it off. |
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321 | */ |
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322 | usleep_range(5000, 10000); |
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323 | |
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324 | err = mac_dev->stop(mac_dev); |
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325 | if (err < 0) |
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326 | netif_err(priv, ifdown, net_dev, "mac_dev->stop() = %d\n", |
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327 | err); |
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328 | |
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329 | for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { |
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330 | error = fman_port_disable(mac_dev->port[i]); |
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331 | if (error) |
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332 | err = error; |
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333 | } |
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334 | |
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335 | #ifndef __rtems__ |
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336 | if (net_dev->phydev) |
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337 | phy_disconnect(net_dev->phydev); |
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338 | net_dev->phydev = NULL; |
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339 | #endif /* __rtems__ */ |
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340 | |
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341 | return err; |
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342 | } |
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343 | |
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344 | #ifndef __rtems__ |
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345 | static void dpaa_tx_timeout(struct net_device *net_dev) |
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346 | { |
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347 | struct dpaa_percpu_priv *percpu_priv; |
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348 | const struct dpaa_priv *priv; |
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349 | |
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350 | priv = netdev_priv(net_dev); |
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351 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
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352 | |
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353 | netif_crit(priv, timer, net_dev, "Transmit timeout latency: %u ms\n", |
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354 | jiffies_to_msecs(jiffies - dev_trans_start(net_dev))); |
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355 | |
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356 | percpu_priv->stats.tx_errors++; |
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357 | } |
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358 | |
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359 | /* Calculates the statistics for the given device by adding the statistics |
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360 | * collected by each CPU. |
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361 | */ |
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362 | static void dpaa_get_stats64(struct net_device *net_dev, |
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363 | struct rtnl_link_stats64 *s) |
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364 | { |
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365 | int numstats = sizeof(struct rtnl_link_stats64) / sizeof(u64); |
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366 | struct dpaa_priv *priv = netdev_priv(net_dev); |
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367 | struct dpaa_percpu_priv *percpu_priv; |
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368 | u64 *netstats = (u64 *)s; |
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369 | u64 *cpustats; |
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370 | int i, j; |
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371 | |
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372 | for_each_possible_cpu(i) { |
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373 | percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
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374 | |
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375 | cpustats = (u64 *)&percpu_priv->stats; |
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376 | |
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377 | /* add stats from all CPUs */ |
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378 | for (j = 0; j < numstats; j++) |
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379 | netstats[j] += cpustats[j]; |
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380 | } |
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381 | } |
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382 | |
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383 | static int dpaa_setup_tc(struct net_device *net_dev, u32 handle, __be16 proto, |
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384 | struct tc_to_netdev *tc) |
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385 | { |
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386 | struct dpaa_priv *priv = netdev_priv(net_dev); |
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387 | u8 num_tc; |
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388 | int i; |
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389 | |
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390 | if (tc->type != TC_SETUP_MQPRIO) |
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391 | return -EINVAL; |
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392 | |
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393 | tc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; |
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394 | num_tc = tc->mqprio->num_tc; |
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395 | |
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396 | if (num_tc == priv->num_tc) |
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397 | return 0; |
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398 | |
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399 | if (!num_tc) { |
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400 | netdev_reset_tc(net_dev); |
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401 | goto out; |
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402 | } |
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403 | |
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404 | if (num_tc > DPAA_TC_NUM) { |
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405 | netdev_err(net_dev, "Too many traffic classes: max %d supported.\n", |
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406 | DPAA_TC_NUM); |
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407 | return -EINVAL; |
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408 | } |
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409 | |
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410 | netdev_set_num_tc(net_dev, num_tc); |
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411 | |
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412 | for (i = 0; i < num_tc; i++) |
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413 | netdev_set_tc_queue(net_dev, i, DPAA_TC_TXQ_NUM, |
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414 | i * DPAA_TC_TXQ_NUM); |
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415 | |
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416 | out: |
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417 | priv->num_tc = num_tc ? : 1; |
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418 | netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM); |
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419 | return 0; |
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420 | } |
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421 | |
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422 | static struct mac_device *dpaa_mac_dev_get(struct platform_device *pdev) |
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423 | { |
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424 | struct platform_device *of_dev; |
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425 | struct dpaa_eth_data *eth_data; |
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426 | struct device *dpaa_dev, *dev; |
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427 | struct device_node *mac_node; |
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428 | struct mac_device *mac_dev; |
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429 | |
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430 | dpaa_dev = &pdev->dev; |
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431 | eth_data = dpaa_dev->platform_data; |
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432 | if (!eth_data) |
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433 | return ERR_PTR(-ENODEV); |
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434 | |
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435 | mac_node = eth_data->mac_node; |
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436 | |
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437 | of_dev = of_find_device_by_node(mac_node); |
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438 | if (!of_dev) { |
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439 | dev_err(dpaa_dev, "of_find_device_by_node(%s) failed\n", |
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440 | mac_node->full_name); |
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441 | of_node_put(mac_node); |
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442 | return ERR_PTR(-EINVAL); |
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443 | } |
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444 | of_node_put(mac_node); |
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445 | |
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446 | dev = &of_dev->dev; |
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447 | |
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448 | mac_dev = dev_get_drvdata(dev); |
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449 | if (!mac_dev) { |
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450 | dev_err(dpaa_dev, "dev_get_drvdata(%s) failed\n", |
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451 | dev_name(dev)); |
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452 | return ERR_PTR(-EINVAL); |
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453 | } |
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454 | |
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455 | return mac_dev; |
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456 | } |
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457 | |
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458 | static int dpaa_set_mac_address(struct net_device *net_dev, void *addr) |
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459 | { |
---|
460 | const struct dpaa_priv *priv; |
---|
461 | struct mac_device *mac_dev; |
---|
462 | struct sockaddr old_addr; |
---|
463 | int err; |
---|
464 | |
---|
465 | priv = netdev_priv(net_dev); |
---|
466 | |
---|
467 | memcpy(old_addr.sa_data, net_dev->dev_addr, ETH_ALEN); |
---|
468 | |
---|
469 | err = eth_mac_addr(net_dev, addr); |
---|
470 | if (err < 0) { |
---|
471 | netif_err(priv, drv, net_dev, "eth_mac_addr() = %d\n", err); |
---|
472 | return err; |
---|
473 | } |
---|
474 | |
---|
475 | mac_dev = priv->mac_dev; |
---|
476 | |
---|
477 | err = mac_dev->change_addr(mac_dev->fman_mac, |
---|
478 | (enet_addr_t *)net_dev->dev_addr); |
---|
479 | if (err < 0) { |
---|
480 | netif_err(priv, drv, net_dev, "mac_dev->change_addr() = %d\n", |
---|
481 | err); |
---|
482 | /* reverting to previous address */ |
---|
483 | eth_mac_addr(net_dev, &old_addr); |
---|
484 | |
---|
485 | return err; |
---|
486 | } |
---|
487 | |
---|
488 | return 0; |
---|
489 | } |
---|
490 | |
---|
491 | static void dpaa_set_rx_mode(struct net_device *net_dev) |
---|
492 | { |
---|
493 | const struct dpaa_priv *priv; |
---|
494 | int err; |
---|
495 | |
---|
496 | priv = netdev_priv(net_dev); |
---|
497 | |
---|
498 | if (!!(net_dev->flags & IFF_PROMISC) != priv->mac_dev->promisc) { |
---|
499 | priv->mac_dev->promisc = !priv->mac_dev->promisc; |
---|
500 | err = priv->mac_dev->set_promisc(priv->mac_dev->fman_mac, |
---|
501 | priv->mac_dev->promisc); |
---|
502 | if (err < 0) |
---|
503 | netif_err(priv, drv, net_dev, |
---|
504 | "mac_dev->set_promisc() = %d\n", |
---|
505 | err); |
---|
506 | } |
---|
507 | |
---|
508 | err = priv->mac_dev->set_multi(net_dev, priv->mac_dev); |
---|
509 | if (err < 0) |
---|
510 | netif_err(priv, drv, net_dev, "mac_dev->set_multi() = %d\n", |
---|
511 | err); |
---|
512 | } |
---|
513 | #endif /* __rtems__ */ |
---|
514 | |
---|
515 | static struct dpaa_bp *dpaa_bpid2pool(int bpid) |
---|
516 | { |
---|
517 | if (WARN_ON(bpid < 0 || bpid >= BM_MAX_NUM_OF_POOLS)) |
---|
518 | return NULL; |
---|
519 | |
---|
520 | return dpaa_bp_array[bpid]; |
---|
521 | } |
---|
522 | |
---|
523 | /* checks if this bpool is already allocated */ |
---|
524 | static bool dpaa_bpid2pool_use(int bpid) |
---|
525 | { |
---|
526 | if (dpaa_bpid2pool(bpid)) { |
---|
527 | atomic_inc(&dpaa_bp_array[bpid]->refs); |
---|
528 | return true; |
---|
529 | } |
---|
530 | |
---|
531 | return false; |
---|
532 | } |
---|
533 | |
---|
534 | /* called only once per bpid by dpaa_bp_alloc_pool() */ |
---|
535 | static void dpaa_bpid2pool_map(int bpid, struct dpaa_bp *dpaa_bp) |
---|
536 | { |
---|
537 | dpaa_bp_array[bpid] = dpaa_bp; |
---|
538 | atomic_set(&dpaa_bp->refs, 1); |
---|
539 | } |
---|
540 | |
---|
541 | static int dpaa_bp_alloc_pool(struct dpaa_bp *dpaa_bp) |
---|
542 | { |
---|
543 | int err; |
---|
544 | |
---|
545 | if (dpaa_bp->size == 0 || dpaa_bp->config_count == 0) { |
---|
546 | pr_err("%s: Buffer pool is not properly initialized! Missing size or initial number of buffers\n", |
---|
547 | __func__); |
---|
548 | return -EINVAL; |
---|
549 | } |
---|
550 | |
---|
551 | /* If the pool is already specified, we only create one per bpid */ |
---|
552 | if (dpaa_bp->bpid != FSL_DPAA_BPID_INV && |
---|
553 | dpaa_bpid2pool_use(dpaa_bp->bpid)) |
---|
554 | return 0; |
---|
555 | |
---|
556 | if (dpaa_bp->bpid == FSL_DPAA_BPID_INV) { |
---|
557 | dpaa_bp->pool = bman_new_pool(); |
---|
558 | if (!dpaa_bp->pool) { |
---|
559 | pr_err("%s: bman_new_pool() failed\n", |
---|
560 | __func__); |
---|
561 | return -ENODEV; |
---|
562 | } |
---|
563 | |
---|
564 | dpaa_bp->bpid = (u8)bman_get_bpid(dpaa_bp->pool); |
---|
565 | } |
---|
566 | |
---|
567 | if (dpaa_bp->seed_cb) { |
---|
568 | err = dpaa_bp->seed_cb(dpaa_bp); |
---|
569 | if (err) |
---|
570 | goto pool_seed_failed; |
---|
571 | } |
---|
572 | |
---|
573 | dpaa_bpid2pool_map(dpaa_bp->bpid, dpaa_bp); |
---|
574 | |
---|
575 | return 0; |
---|
576 | |
---|
577 | pool_seed_failed: |
---|
578 | pr_err("%s: pool seeding failed\n", __func__); |
---|
579 | bman_free_pool(dpaa_bp->pool); |
---|
580 | |
---|
581 | return err; |
---|
582 | } |
---|
583 | |
---|
584 | /* remove and free all the buffers from the given buffer pool */ |
---|
585 | static void dpaa_bp_drain(struct dpaa_bp *bp) |
---|
586 | { |
---|
587 | u8 num = 8; |
---|
588 | int ret; |
---|
589 | |
---|
590 | do { |
---|
591 | struct bm_buffer bmb[8]; |
---|
592 | int i; |
---|
593 | |
---|
594 | ret = bman_acquire(bp->pool, bmb, num); |
---|
595 | if (ret < 0) { |
---|
596 | if (num == 8) { |
---|
597 | /* we have less than 8 buffers left; |
---|
598 | * drain them one by one |
---|
599 | */ |
---|
600 | num = 1; |
---|
601 | ret = 1; |
---|
602 | continue; |
---|
603 | } else { |
---|
604 | /* Pool is fully drained */ |
---|
605 | break; |
---|
606 | } |
---|
607 | } |
---|
608 | |
---|
609 | if (bp->free_buf_cb) |
---|
610 | for (i = 0; i < num; i++) |
---|
611 | bp->free_buf_cb(bp, &bmb[i]); |
---|
612 | } while (ret > 0); |
---|
613 | } |
---|
614 | |
---|
615 | static void dpaa_bp_free(struct dpaa_bp *dpaa_bp) |
---|
616 | { |
---|
617 | struct dpaa_bp *bp = dpaa_bpid2pool(dpaa_bp->bpid); |
---|
618 | |
---|
619 | /* the mapping between bpid and dpaa_bp is done very late in the |
---|
620 | * allocation procedure; if something failed before the mapping, the bp |
---|
621 | * was not configured, therefore we don't need the below instructions |
---|
622 | */ |
---|
623 | if (!bp) |
---|
624 | return; |
---|
625 | |
---|
626 | if (!atomic_dec_and_test(&bp->refs)) |
---|
627 | return; |
---|
628 | |
---|
629 | if (bp->free_buf_cb) |
---|
630 | dpaa_bp_drain(bp); |
---|
631 | |
---|
632 | dpaa_bp_array[bp->bpid] = NULL; |
---|
633 | bman_free_pool(bp->pool); |
---|
634 | } |
---|
635 | |
---|
636 | static void dpaa_bps_free(struct dpaa_priv *priv) |
---|
637 | { |
---|
638 | int i; |
---|
639 | |
---|
640 | for (i = 0; i < DPAA_BPS_NUM; i++) |
---|
641 | dpaa_bp_free(priv->dpaa_bps[i]); |
---|
642 | } |
---|
643 | |
---|
644 | /* Use multiple WQs for FQ assignment: |
---|
645 | * - Tx Confirmation queues go to WQ1. |
---|
646 | * - Rx Error and Tx Error queues go to WQ5 (giving them a better chance |
---|
647 | * to be scheduled, in case there are many more FQs in WQ6). |
---|
648 | * - Rx Default goes to WQ6. |
---|
649 | * - Tx queues go to different WQs depending on their priority. Equal |
---|
650 | * chunks of NR_CPUS queues go to WQ6 (lowest priority), WQ2, WQ1 and |
---|
651 | * WQ0 (highest priority). |
---|
652 | * This ensures that Tx-confirmed buffers are timely released. In particular, |
---|
653 | * it avoids congestion on the Tx Confirm FQs, which can pile up PFDRs if they |
---|
654 | * are greatly outnumbered by other FQs in the system, while |
---|
655 | * dequeue scheduling is round-robin. |
---|
656 | */ |
---|
657 | static inline void dpaa_assign_wq(struct dpaa_fq *fq, int idx) |
---|
658 | { |
---|
659 | switch (fq->fq_type) { |
---|
660 | case FQ_TYPE_TX_CONFIRM: |
---|
661 | case FQ_TYPE_TX_CONF_MQ: |
---|
662 | fq->wq = 1; |
---|
663 | break; |
---|
664 | case FQ_TYPE_RX_ERROR: |
---|
665 | case FQ_TYPE_TX_ERROR: |
---|
666 | fq->wq = 5; |
---|
667 | break; |
---|
668 | case FQ_TYPE_RX_DEFAULT: |
---|
669 | fq->wq = 6; |
---|
670 | break; |
---|
671 | case FQ_TYPE_TX: |
---|
672 | switch (idx / DPAA_TC_TXQ_NUM) { |
---|
673 | case 0: |
---|
674 | /* Low priority (best effort) */ |
---|
675 | fq->wq = 6; |
---|
676 | break; |
---|
677 | case 1: |
---|
678 | /* Medium priority */ |
---|
679 | fq->wq = 2; |
---|
680 | break; |
---|
681 | case 2: |
---|
682 | /* High priority */ |
---|
683 | fq->wq = 1; |
---|
684 | break; |
---|
685 | case 3: |
---|
686 | /* Very high priority */ |
---|
687 | fq->wq = 0; |
---|
688 | break; |
---|
689 | default: |
---|
690 | WARN(1, "Too many TX FQs: more than %d!\n", |
---|
691 | DPAA_ETH_TXQ_NUM); |
---|
692 | } |
---|
693 | break; |
---|
694 | default: |
---|
695 | WARN(1, "Invalid FQ type %d for FQID %d!\n", |
---|
696 | fq->fq_type, fq->fqid); |
---|
697 | } |
---|
698 | } |
---|
699 | |
---|
700 | static struct dpaa_fq *dpaa_fq_alloc(struct device *dev, |
---|
701 | u32 start, u32 count, |
---|
702 | struct list_head *list, |
---|
703 | enum dpaa_fq_type fq_type) |
---|
704 | { |
---|
705 | struct dpaa_fq *dpaa_fq; |
---|
706 | int i; |
---|
707 | |
---|
708 | dpaa_fq = devm_kzalloc(dev, sizeof(*dpaa_fq) * count, |
---|
709 | GFP_KERNEL); |
---|
710 | if (!dpaa_fq) |
---|
711 | return NULL; |
---|
712 | |
---|
713 | for (i = 0; i < count; i++) { |
---|
714 | dpaa_fq[i].fq_type = fq_type; |
---|
715 | dpaa_fq[i].fqid = start ? start + i : 0; |
---|
716 | list_add_tail(&dpaa_fq[i].list, list); |
---|
717 | } |
---|
718 | |
---|
719 | for (i = 0; i < count; i++) |
---|
720 | dpaa_assign_wq(dpaa_fq + i, i); |
---|
721 | |
---|
722 | return dpaa_fq; |
---|
723 | } |
---|
724 | |
---|
725 | static int dpaa_alloc_all_fqs(struct device *dev, struct list_head *list, |
---|
726 | struct fm_port_fqs *port_fqs) |
---|
727 | { |
---|
728 | struct dpaa_fq *dpaa_fq; |
---|
729 | |
---|
730 | dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_RX_ERROR); |
---|
731 | if (!dpaa_fq) |
---|
732 | goto fq_alloc_failed; |
---|
733 | |
---|
734 | port_fqs->rx_errq = &dpaa_fq[0]; |
---|
735 | |
---|
736 | dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_RX_DEFAULT); |
---|
737 | if (!dpaa_fq) |
---|
738 | goto fq_alloc_failed; |
---|
739 | |
---|
740 | port_fqs->rx_defq = &dpaa_fq[0]; |
---|
741 | |
---|
742 | if (!dpaa_fq_alloc(dev, 0, DPAA_ETH_TXQ_NUM, list, FQ_TYPE_TX_CONF_MQ)) |
---|
743 | goto fq_alloc_failed; |
---|
744 | |
---|
745 | dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_TX_ERROR); |
---|
746 | if (!dpaa_fq) |
---|
747 | goto fq_alloc_failed; |
---|
748 | |
---|
749 | port_fqs->tx_errq = &dpaa_fq[0]; |
---|
750 | |
---|
751 | dpaa_fq = dpaa_fq_alloc(dev, 0, 1, list, FQ_TYPE_TX_CONFIRM); |
---|
752 | if (!dpaa_fq) |
---|
753 | goto fq_alloc_failed; |
---|
754 | |
---|
755 | port_fqs->tx_defq = &dpaa_fq[0]; |
---|
756 | |
---|
757 | if (!dpaa_fq_alloc(dev, 0, DPAA_ETH_TXQ_NUM, list, FQ_TYPE_TX)) |
---|
758 | goto fq_alloc_failed; |
---|
759 | |
---|
760 | return 0; |
---|
761 | |
---|
762 | fq_alloc_failed: |
---|
763 | dev_err(dev, "dpaa_fq_alloc() failed\n"); |
---|
764 | return -ENOMEM; |
---|
765 | } |
---|
766 | |
---|
767 | static u32 rx_pool_channel; |
---|
768 | static DEFINE_SPINLOCK(rx_pool_channel_init); |
---|
769 | |
---|
770 | static int dpaa_get_channel(void) |
---|
771 | { |
---|
772 | spin_lock(&rx_pool_channel_init); |
---|
773 | if (!rx_pool_channel) { |
---|
774 | u32 pool; |
---|
775 | int ret; |
---|
776 | |
---|
777 | ret = qman_alloc_pool(&pool); |
---|
778 | |
---|
779 | if (!ret) |
---|
780 | rx_pool_channel = pool; |
---|
781 | } |
---|
782 | spin_unlock(&rx_pool_channel_init); |
---|
783 | if (!rx_pool_channel) |
---|
784 | return -ENOMEM; |
---|
785 | return rx_pool_channel; |
---|
786 | } |
---|
787 | |
---|
788 | #ifndef __rtems__ |
---|
789 | static void dpaa_release_channel(void) |
---|
790 | { |
---|
791 | qman_release_pool(rx_pool_channel); |
---|
792 | } |
---|
793 | #endif /* __rtems__ */ |
---|
794 | |
---|
795 | static void dpaa_eth_add_channel(u16 channel) |
---|
796 | { |
---|
797 | u32 pool = QM_SDQCR_CHANNELS_POOL_CONV(channel); |
---|
798 | #ifndef __rtems__ |
---|
799 | const cpumask_t *cpus = qman_affine_cpus(); |
---|
800 | #endif /* __rtems__ */ |
---|
801 | struct qman_portal *portal; |
---|
802 | int cpu; |
---|
803 | |
---|
804 | for_each_cpu(cpu, cpus) { |
---|
805 | portal = qman_get_affine_portal(cpu); |
---|
806 | qman_p_static_dequeue_add(portal, pool); |
---|
807 | } |
---|
808 | } |
---|
809 | |
---|
810 | /* Congestion group state change notification callback. |
---|
811 | * Stops the device's egress queues while they are congested and |
---|
812 | * wakes them upon exiting congested state. |
---|
813 | * Also updates some CGR-related stats. |
---|
814 | */ |
---|
815 | static void dpaa_eth_cgscn(struct qman_portal *qm, struct qman_cgr *cgr, |
---|
816 | int congested) |
---|
817 | { |
---|
818 | struct dpaa_priv *priv = (struct dpaa_priv *)container_of(cgr, |
---|
819 | struct dpaa_priv, cgr_data.cgr); |
---|
820 | |
---|
821 | if (congested) { |
---|
822 | priv->cgr_data.congestion_start_jiffies = jiffies; |
---|
823 | #ifndef __rtems__ |
---|
824 | netif_tx_stop_all_queues(priv->net_dev); |
---|
825 | #endif /* __rtems__ */ |
---|
826 | priv->cgr_data.cgr_congested_count++; |
---|
827 | } else { |
---|
828 | priv->cgr_data.congested_jiffies += |
---|
829 | (jiffies - priv->cgr_data.congestion_start_jiffies); |
---|
830 | #ifndef __rtems__ |
---|
831 | netif_tx_wake_all_queues(priv->net_dev); |
---|
832 | #endif /* __rtems__ */ |
---|
833 | } |
---|
834 | } |
---|
835 | |
---|
836 | static int dpaa_eth_cgr_init(struct dpaa_priv *priv) |
---|
837 | { |
---|
838 | struct qm_mcc_initcgr initcgr; |
---|
839 | u32 cs_th; |
---|
840 | int err; |
---|
841 | |
---|
842 | err = qman_alloc_cgrid(&priv->cgr_data.cgr.cgrid); |
---|
843 | if (err < 0) { |
---|
844 | if (netif_msg_drv(priv)) |
---|
845 | pr_err("%s: Error %d allocating CGR ID\n", |
---|
846 | __func__, err); |
---|
847 | goto out_error; |
---|
848 | } |
---|
849 | priv->cgr_data.cgr.cb = dpaa_eth_cgscn; |
---|
850 | |
---|
851 | /* Enable Congestion State Change Notifications and CS taildrop */ |
---|
852 | memset(&initcgr, 0, sizeof(initcgr)); |
---|
853 | initcgr.we_mask = cpu_to_be16(QM_CGR_WE_CSCN_EN | QM_CGR_WE_CS_THRES); |
---|
854 | initcgr.cgr.cscn_en = QM_CGR_EN; |
---|
855 | |
---|
856 | /* Set different thresholds based on the MAC speed. |
---|
857 | * This may turn suboptimal if the MAC is reconfigured at a speed |
---|
858 | * lower than its max, e.g. if a dTSEC later negotiates a 100Mbps link. |
---|
859 | * In such cases, we ought to reconfigure the threshold, too. |
---|
860 | */ |
---|
861 | if (priv->mac_dev->if_support & SUPPORTED_10000baseT_Full) |
---|
862 | cs_th = DPAA_CS_THRESHOLD_10G; |
---|
863 | else |
---|
864 | cs_th = DPAA_CS_THRESHOLD_1G; |
---|
865 | qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1); |
---|
866 | |
---|
867 | initcgr.we_mask |= cpu_to_be16(QM_CGR_WE_CSTD_EN); |
---|
868 | initcgr.cgr.cstd_en = QM_CGR_EN; |
---|
869 | |
---|
870 | err = qman_create_cgr(&priv->cgr_data.cgr, QMAN_CGR_FLAG_USE_INIT, |
---|
871 | &initcgr); |
---|
872 | if (err < 0) { |
---|
873 | if (netif_msg_drv(priv)) |
---|
874 | pr_err("%s: Error %d creating CGR with ID %d\n", |
---|
875 | __func__, err, priv->cgr_data.cgr.cgrid); |
---|
876 | qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
---|
877 | goto out_error; |
---|
878 | } |
---|
879 | if (netif_msg_drv(priv)) |
---|
880 | pr_debug("Created CGR %d for netdev with hwaddr %pM on QMan channel %d\n", |
---|
881 | priv->cgr_data.cgr.cgrid, priv->mac_dev->addr, |
---|
882 | priv->cgr_data.cgr.chan); |
---|
883 | |
---|
884 | out_error: |
---|
885 | return err; |
---|
886 | } |
---|
887 | |
---|
888 | static inline void dpaa_setup_ingress(const struct dpaa_priv *priv, |
---|
889 | struct dpaa_fq *fq, |
---|
890 | const struct qman_fq *template) |
---|
891 | { |
---|
892 | fq->fq_base = *template; |
---|
893 | fq->net_dev = priv->net_dev; |
---|
894 | |
---|
895 | fq->flags = QMAN_FQ_FLAG_NO_ENQUEUE; |
---|
896 | fq->channel = priv->channel; |
---|
897 | } |
---|
898 | |
---|
899 | static inline void dpaa_setup_egress(const struct dpaa_priv *priv, |
---|
900 | struct dpaa_fq *fq, |
---|
901 | struct fman_port *port, |
---|
902 | const struct qman_fq *template) |
---|
903 | { |
---|
904 | fq->fq_base = *template; |
---|
905 | fq->net_dev = priv->net_dev; |
---|
906 | |
---|
907 | if (port) { |
---|
908 | fq->flags = QMAN_FQ_FLAG_TO_DCPORTAL; |
---|
909 | fq->channel = (u16)fman_port_get_qman_channel_id(port); |
---|
910 | } else { |
---|
911 | fq->flags = QMAN_FQ_FLAG_NO_MODIFY; |
---|
912 | } |
---|
913 | } |
---|
914 | |
---|
915 | static void dpaa_fq_setup(struct dpaa_priv *priv, |
---|
916 | const struct dpaa_fq_cbs *fq_cbs, |
---|
917 | struct fman_port *tx_port) |
---|
918 | { |
---|
919 | #ifndef __rtems__ |
---|
920 | int egress_cnt = 0, conf_cnt = 0, num_portals = 0, cpu; |
---|
921 | const cpumask_t *affine_cpus = qman_affine_cpus(); |
---|
922 | u16 portals[NR_CPUS]; |
---|
923 | #else /* __rtems__ */ |
---|
924 | int egress_cnt = 0, conf_cnt = 0; |
---|
925 | #endif /* __rtems__ */ |
---|
926 | struct dpaa_fq *fq; |
---|
927 | |
---|
928 | #ifndef __rtems__ |
---|
929 | for_each_cpu(cpu, affine_cpus) |
---|
930 | portals[num_portals++] = qman_affine_channel(cpu); |
---|
931 | if (num_portals == 0) |
---|
932 | dev_err(priv->net_dev->dev.parent, |
---|
933 | "No Qman software (affine) channels found"); |
---|
934 | #endif /* __rtems__ */ |
---|
935 | |
---|
936 | /* Initialize each FQ in the list */ |
---|
937 | list_for_each_entry(fq, &priv->dpaa_fq_list, list) { |
---|
938 | switch (fq->fq_type) { |
---|
939 | case FQ_TYPE_RX_DEFAULT: |
---|
940 | dpaa_setup_ingress(priv, fq, &fq_cbs->rx_defq); |
---|
941 | break; |
---|
942 | case FQ_TYPE_RX_ERROR: |
---|
943 | dpaa_setup_ingress(priv, fq, &fq_cbs->rx_errq); |
---|
944 | break; |
---|
945 | case FQ_TYPE_TX: |
---|
946 | dpaa_setup_egress(priv, fq, tx_port, |
---|
947 | &fq_cbs->egress_ern); |
---|
948 | /* If we have more Tx queues than the number of cores, |
---|
949 | * just ignore the extra ones. |
---|
950 | */ |
---|
951 | if (egress_cnt < DPAA_ETH_TXQ_NUM) |
---|
952 | priv->egress_fqs[egress_cnt++] = &fq->fq_base; |
---|
953 | break; |
---|
954 | case FQ_TYPE_TX_CONF_MQ: |
---|
955 | priv->conf_fqs[conf_cnt++] = &fq->fq_base; |
---|
956 | /* fall through */ |
---|
957 | case FQ_TYPE_TX_CONFIRM: |
---|
958 | dpaa_setup_ingress(priv, fq, &fq_cbs->tx_defq); |
---|
959 | break; |
---|
960 | case FQ_TYPE_TX_ERROR: |
---|
961 | dpaa_setup_ingress(priv, fq, &fq_cbs->tx_errq); |
---|
962 | break; |
---|
963 | default: |
---|
964 | #ifndef __rtems__ |
---|
965 | dev_warn(priv->net_dev->dev.parent, |
---|
966 | "Unknown FQ type detected!\n"); |
---|
967 | #else /* __rtems__ */ |
---|
968 | BSD_ASSERT(0); |
---|
969 | #endif /* __rtems__ */ |
---|
970 | break; |
---|
971 | } |
---|
972 | } |
---|
973 | |
---|
974 | /* Make sure all CPUs receive a corresponding Tx queue. */ |
---|
975 | while (egress_cnt < DPAA_ETH_TXQ_NUM) { |
---|
976 | list_for_each_entry(fq, &priv->dpaa_fq_list, list) { |
---|
977 | if (fq->fq_type != FQ_TYPE_TX) |
---|
978 | continue; |
---|
979 | priv->egress_fqs[egress_cnt++] = &fq->fq_base; |
---|
980 | if (egress_cnt == DPAA_ETH_TXQ_NUM) |
---|
981 | break; |
---|
982 | } |
---|
983 | } |
---|
984 | } |
---|
985 | |
---|
986 | static inline int dpaa_tx_fq_to_id(const struct dpaa_priv *priv, |
---|
987 | struct qman_fq *tx_fq) |
---|
988 | { |
---|
989 | int i; |
---|
990 | |
---|
991 | for (i = 0; i < DPAA_ETH_TXQ_NUM; i++) |
---|
992 | if (priv->egress_fqs[i] == tx_fq) |
---|
993 | return i; |
---|
994 | |
---|
995 | return -EINVAL; |
---|
996 | } |
---|
997 | |
---|
998 | static int dpaa_fq_init(struct dpaa_fq *dpaa_fq, bool td_enable) |
---|
999 | { |
---|
1000 | const struct dpaa_priv *priv; |
---|
1001 | struct qman_fq *confq = NULL; |
---|
1002 | struct qm_mcc_initfq initfq; |
---|
1003 | #ifndef __rtems__ |
---|
1004 | struct device *dev; |
---|
1005 | #endif /* __rtems__ */ |
---|
1006 | struct qman_fq *fq; |
---|
1007 | int queue_id; |
---|
1008 | int err; |
---|
1009 | |
---|
1010 | priv = netdev_priv(dpaa_fq->net_dev); |
---|
1011 | #ifndef __rtems__ |
---|
1012 | dev = dpaa_fq->net_dev->dev.parent; |
---|
1013 | #endif /* __rtems__ */ |
---|
1014 | |
---|
1015 | if (dpaa_fq->fqid == 0) |
---|
1016 | dpaa_fq->flags |= QMAN_FQ_FLAG_DYNAMIC_FQID; |
---|
1017 | |
---|
1018 | dpaa_fq->init = !(dpaa_fq->flags & QMAN_FQ_FLAG_NO_MODIFY); |
---|
1019 | |
---|
1020 | err = qman_create_fq(dpaa_fq->fqid, dpaa_fq->flags, &dpaa_fq->fq_base); |
---|
1021 | if (err) { |
---|
1022 | #ifndef __rtems__ |
---|
1023 | dev_err(dev, "qman_create_fq() failed\n"); |
---|
1024 | #else /* __rtems__ */ |
---|
1025 | BSD_ASSERT(0); |
---|
1026 | #endif /* __rtems__ */ |
---|
1027 | return err; |
---|
1028 | } |
---|
1029 | fq = &dpaa_fq->fq_base; |
---|
1030 | |
---|
1031 | if (dpaa_fq->init) { |
---|
1032 | memset(&initfq, 0, sizeof(initfq)); |
---|
1033 | |
---|
1034 | initfq.we_mask = cpu_to_be16(QM_INITFQ_WE_FQCTRL); |
---|
1035 | /* Note: we may get to keep an empty FQ in cache */ |
---|
1036 | initfq.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_PREFERINCACHE); |
---|
1037 | |
---|
1038 | /* Try to reduce the number of portal interrupts for |
---|
1039 | * Tx Confirmation FQs. |
---|
1040 | */ |
---|
1041 | if (dpaa_fq->fq_type == FQ_TYPE_TX_CONFIRM) |
---|
1042 | initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_AVOIDBLOCK); |
---|
1043 | |
---|
1044 | /* FQ placement */ |
---|
1045 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_DESTWQ); |
---|
1046 | |
---|
1047 | qm_fqd_set_destwq(&initfq.fqd, dpaa_fq->channel, dpaa_fq->wq); |
---|
1048 | |
---|
1049 | /* Put all egress queues in a congestion group of their own. |
---|
1050 | * Sensu stricto, the Tx confirmation queues are Rx FQs, |
---|
1051 | * rather than Tx - but they nonetheless account for the |
---|
1052 | * memory footprint on behalf of egress traffic. We therefore |
---|
1053 | * place them in the netdev's CGR, along with the Tx FQs. |
---|
1054 | */ |
---|
1055 | if (dpaa_fq->fq_type == FQ_TYPE_TX || |
---|
1056 | dpaa_fq->fq_type == FQ_TYPE_TX_CONFIRM || |
---|
1057 | dpaa_fq->fq_type == FQ_TYPE_TX_CONF_MQ) { |
---|
1058 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CGID); |
---|
1059 | initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_CGE); |
---|
1060 | initfq.fqd.cgid = (u8)priv->cgr_data.cgr.cgrid; |
---|
1061 | /* Set a fixed overhead accounting, in an attempt to |
---|
1062 | * reduce the impact of fixed-size skb shells and the |
---|
1063 | * driver's needed headroom on system memory. This is |
---|
1064 | * especially the case when the egress traffic is |
---|
1065 | * composed of small datagrams. |
---|
1066 | * Unfortunately, QMan's OAL value is capped to an |
---|
1067 | * insufficient value, but even that is better than |
---|
1068 | * no overhead accounting at all. |
---|
1069 | */ |
---|
1070 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_OAC); |
---|
1071 | qm_fqd_set_oac(&initfq.fqd, QM_OAC_CG); |
---|
1072 | qm_fqd_set_oal(&initfq.fqd, |
---|
1073 | #ifndef __rtems__ |
---|
1074 | min(sizeof(struct sk_buff) + |
---|
1075 | #else /* __rtems__ */ |
---|
1076 | min( |
---|
1077 | #endif /* __rtems__ */ |
---|
1078 | priv->tx_headroom, |
---|
1079 | (size_t)FSL_QMAN_MAX_OAL)); |
---|
1080 | } |
---|
1081 | |
---|
1082 | if (td_enable) { |
---|
1083 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_TDTHRESH); |
---|
1084 | qm_fqd_set_taildrop(&initfq.fqd, DPAA_FQ_TD, 1); |
---|
1085 | initfq.fqd.fq_ctrl = cpu_to_be16(QM_FQCTRL_TDE); |
---|
1086 | } |
---|
1087 | |
---|
1088 | if (dpaa_fq->fq_type == FQ_TYPE_TX) { |
---|
1089 | queue_id = dpaa_tx_fq_to_id(priv, &dpaa_fq->fq_base); |
---|
1090 | if (queue_id >= 0) |
---|
1091 | confq = priv->conf_fqs[queue_id]; |
---|
1092 | if (confq) { |
---|
1093 | initfq.we_mask |= |
---|
1094 | cpu_to_be16(QM_INITFQ_WE_CONTEXTA); |
---|
1095 | /* ContextA: OVOM=1(use contextA2 bits instead of ICAD) |
---|
1096 | * A2V=1 (contextA A2 field is valid) |
---|
1097 | * A0V=1 (contextA A0 field is valid) |
---|
1098 | * B0V=1 (contextB field is valid) |
---|
1099 | * ContextA A2: EBD=1 (deallocate buffers inside FMan) |
---|
1100 | * ContextB B0(ASPID): 0 (absolute Virtual Storage ID) |
---|
1101 | */ |
---|
1102 | qm_fqd_context_a_set64(&initfq.fqd, |
---|
1103 | 0x1e00000080000000ULL); |
---|
1104 | } |
---|
1105 | } |
---|
1106 | |
---|
1107 | /* Put all the ingress queues in our "ingress CGR". */ |
---|
1108 | if (priv->use_ingress_cgr && |
---|
1109 | (dpaa_fq->fq_type == FQ_TYPE_RX_DEFAULT || |
---|
1110 | dpaa_fq->fq_type == FQ_TYPE_RX_ERROR)) { |
---|
1111 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CGID); |
---|
1112 | initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_CGE); |
---|
1113 | initfq.fqd.cgid = (u8)priv->ingress_cgr.cgrid; |
---|
1114 | /* Set a fixed overhead accounting, just like for the |
---|
1115 | * egress CGR. |
---|
1116 | */ |
---|
1117 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_OAC); |
---|
1118 | qm_fqd_set_oac(&initfq.fqd, QM_OAC_CG); |
---|
1119 | qm_fqd_set_oal(&initfq.fqd, |
---|
1120 | #ifndef __rtems__ |
---|
1121 | min(sizeof(struct sk_buff) + |
---|
1122 | #else /* __rtems__ */ |
---|
1123 | min( |
---|
1124 | #endif /* __rtems__ */ |
---|
1125 | priv->tx_headroom, |
---|
1126 | (size_t)FSL_QMAN_MAX_OAL)); |
---|
1127 | } |
---|
1128 | |
---|
1129 | /* Initialization common to all ingress queues */ |
---|
1130 | if (dpaa_fq->flags & QMAN_FQ_FLAG_NO_ENQUEUE) { |
---|
1131 | initfq.we_mask |= cpu_to_be16(QM_INITFQ_WE_CONTEXTA); |
---|
1132 | initfq.fqd.fq_ctrl |= cpu_to_be16(QM_FQCTRL_HOLDACTIVE | |
---|
1133 | QM_FQCTRL_CTXASTASHING); |
---|
1134 | initfq.fqd.context_a.stashing.exclusive = |
---|
1135 | QM_STASHING_EXCL_DATA | QM_STASHING_EXCL_CTX | |
---|
1136 | QM_STASHING_EXCL_ANNOTATION; |
---|
1137 | qm_fqd_set_stashing(&initfq.fqd, 1, 2, |
---|
1138 | DIV_ROUND_UP(sizeof(struct qman_fq), |
---|
1139 | 64)); |
---|
1140 | } |
---|
1141 | |
---|
1142 | err = qman_init_fq(fq, QMAN_INITFQ_FLAG_SCHED, &initfq); |
---|
1143 | if (err < 0) { |
---|
1144 | #ifndef __rtems__ |
---|
1145 | dev_err(dev, "qman_init_fq(%u) = %d\n", |
---|
1146 | qman_fq_fqid(fq), err); |
---|
1147 | #else /* __rtems__ */ |
---|
1148 | BSD_ASSERT(0); |
---|
1149 | #endif /* __rtems__ */ |
---|
1150 | qman_destroy_fq(fq); |
---|
1151 | return err; |
---|
1152 | } |
---|
1153 | } |
---|
1154 | |
---|
1155 | dpaa_fq->fqid = qman_fq_fqid(fq); |
---|
1156 | |
---|
1157 | return 0; |
---|
1158 | } |
---|
1159 | |
---|
1160 | #ifndef __rtems__ |
---|
1161 | static int dpaa_fq_free_entry(struct device *dev, struct qman_fq *fq) |
---|
1162 | { |
---|
1163 | #ifndef __rtems__ |
---|
1164 | const struct dpaa_priv *priv; |
---|
1165 | #endif /* __rtems__ */ |
---|
1166 | struct dpaa_fq *dpaa_fq; |
---|
1167 | int err, error; |
---|
1168 | |
---|
1169 | err = 0; |
---|
1170 | |
---|
1171 | dpaa_fq = container_of(fq, struct dpaa_fq, fq_base); |
---|
1172 | #ifndef __rtems__ |
---|
1173 | priv = netdev_priv(dpaa_fq->net_dev); |
---|
1174 | #endif /* __rtems__ */ |
---|
1175 | |
---|
1176 | if (dpaa_fq->init) { |
---|
1177 | err = qman_retire_fq(fq, NULL); |
---|
1178 | if (err < 0 && netif_msg_drv(priv)) |
---|
1179 | dev_err(dev, "qman_retire_fq(%u) = %d\n", |
---|
1180 | qman_fq_fqid(fq), err); |
---|
1181 | |
---|
1182 | error = qman_oos_fq(fq); |
---|
1183 | if (error < 0 && netif_msg_drv(priv)) { |
---|
1184 | dev_err(dev, "qman_oos_fq(%u) = %d\n", |
---|
1185 | qman_fq_fqid(fq), error); |
---|
1186 | if (err >= 0) |
---|
1187 | err = error; |
---|
1188 | } |
---|
1189 | } |
---|
1190 | |
---|
1191 | qman_destroy_fq(fq); |
---|
1192 | list_del(&dpaa_fq->list); |
---|
1193 | |
---|
1194 | return err; |
---|
1195 | } |
---|
1196 | |
---|
1197 | static int dpaa_fq_free(struct device *dev, struct list_head *list) |
---|
1198 | { |
---|
1199 | struct dpaa_fq *dpaa_fq, *tmp; |
---|
1200 | int err, error; |
---|
1201 | |
---|
1202 | err = 0; |
---|
1203 | list_for_each_entry_safe(dpaa_fq, tmp, list, list) { |
---|
1204 | error = dpaa_fq_free_entry(dev, (struct qman_fq *)dpaa_fq); |
---|
1205 | if (error < 0 && err >= 0) |
---|
1206 | err = error; |
---|
1207 | } |
---|
1208 | |
---|
1209 | return err; |
---|
1210 | } |
---|
1211 | #endif /* __rtems__ */ |
---|
1212 | |
---|
1213 | static int dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq, |
---|
1214 | struct dpaa_fq *defq, |
---|
1215 | struct dpaa_buffer_layout *buf_layout) |
---|
1216 | { |
---|
1217 | struct fman_buffer_prefix_content buf_prefix_content; |
---|
1218 | struct fman_port_params params; |
---|
1219 | int err; |
---|
1220 | |
---|
1221 | memset(¶ms, 0, sizeof(params)); |
---|
1222 | memset(&buf_prefix_content, 0, sizeof(buf_prefix_content)); |
---|
1223 | |
---|
1224 | buf_prefix_content.priv_data_size = buf_layout->priv_data_size; |
---|
1225 | buf_prefix_content.pass_prs_result = true; |
---|
1226 | buf_prefix_content.pass_hash_result = true; |
---|
1227 | buf_prefix_content.pass_time_stamp = false; |
---|
1228 | buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT; |
---|
1229 | |
---|
1230 | params.specific_params.non_rx_params.err_fqid = errq->fqid; |
---|
1231 | params.specific_params.non_rx_params.dflt_fqid = defq->fqid; |
---|
1232 | |
---|
1233 | err = fman_port_config(port, ¶ms); |
---|
1234 | if (err) { |
---|
1235 | pr_err("%s: fman_port_config failed\n", __func__); |
---|
1236 | return err; |
---|
1237 | } |
---|
1238 | |
---|
1239 | err = fman_port_cfg_buf_prefix_content(port, &buf_prefix_content); |
---|
1240 | if (err) { |
---|
1241 | pr_err("%s: fman_port_cfg_buf_prefix_content failed\n", |
---|
1242 | __func__); |
---|
1243 | return err; |
---|
1244 | } |
---|
1245 | |
---|
1246 | err = fman_port_init(port); |
---|
1247 | if (err) |
---|
1248 | pr_err("%s: fm_port_init failed\n", __func__); |
---|
1249 | |
---|
1250 | return err; |
---|
1251 | } |
---|
1252 | |
---|
1253 | static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps, |
---|
1254 | size_t count, struct dpaa_fq *errq, |
---|
1255 | struct dpaa_fq *defq, |
---|
1256 | struct dpaa_buffer_layout *buf_layout) |
---|
1257 | { |
---|
1258 | struct fman_buffer_prefix_content buf_prefix_content; |
---|
1259 | struct fman_port_rx_params *rx_p; |
---|
1260 | struct fman_port_params params; |
---|
1261 | int i, err; |
---|
1262 | |
---|
1263 | memset(¶ms, 0, sizeof(params)); |
---|
1264 | memset(&buf_prefix_content, 0, sizeof(buf_prefix_content)); |
---|
1265 | |
---|
1266 | buf_prefix_content.priv_data_size = buf_layout->priv_data_size; |
---|
1267 | buf_prefix_content.pass_prs_result = true; |
---|
1268 | buf_prefix_content.pass_hash_result = true; |
---|
1269 | buf_prefix_content.pass_time_stamp = false; |
---|
1270 | buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT; |
---|
1271 | |
---|
1272 | rx_p = ¶ms.specific_params.rx_params; |
---|
1273 | rx_p->err_fqid = errq->fqid; |
---|
1274 | rx_p->dflt_fqid = defq->fqid; |
---|
1275 | |
---|
1276 | count = min(ARRAY_SIZE(rx_p->ext_buf_pools.ext_buf_pool), count); |
---|
1277 | rx_p->ext_buf_pools.num_of_pools_used = (u8)count; |
---|
1278 | for (i = 0; i < count; i++) { |
---|
1279 | rx_p->ext_buf_pools.ext_buf_pool[i].id = bps[i]->bpid; |
---|
1280 | rx_p->ext_buf_pools.ext_buf_pool[i].size = (u16)bps[i]->size; |
---|
1281 | } |
---|
1282 | |
---|
1283 | err = fman_port_config(port, ¶ms); |
---|
1284 | if (err) { |
---|
1285 | pr_err("%s: fman_port_config failed\n", __func__); |
---|
1286 | return err; |
---|
1287 | } |
---|
1288 | |
---|
1289 | err = fman_port_cfg_buf_prefix_content(port, &buf_prefix_content); |
---|
1290 | if (err) { |
---|
1291 | pr_err("%s: fman_port_cfg_buf_prefix_content failed\n", |
---|
1292 | __func__); |
---|
1293 | return err; |
---|
1294 | } |
---|
1295 | |
---|
1296 | err = fman_port_init(port); |
---|
1297 | if (err) |
---|
1298 | pr_err("%s: fm_port_init failed\n", __func__); |
---|
1299 | |
---|
1300 | return err; |
---|
1301 | } |
---|
1302 | |
---|
1303 | static int dpaa_eth_init_ports(struct mac_device *mac_dev, |
---|
1304 | struct dpaa_bp **bps, size_t count, |
---|
1305 | struct fm_port_fqs *port_fqs, |
---|
1306 | struct dpaa_buffer_layout *buf_layout, |
---|
1307 | struct device *dev) |
---|
1308 | { |
---|
1309 | struct fman_port *rxport = mac_dev->port[RX]; |
---|
1310 | struct fman_port *txport = mac_dev->port[TX]; |
---|
1311 | int err; |
---|
1312 | |
---|
1313 | err = dpaa_eth_init_tx_port(txport, port_fqs->tx_errq, |
---|
1314 | port_fqs->tx_defq, &buf_layout[TX]); |
---|
1315 | if (err) |
---|
1316 | return err; |
---|
1317 | |
---|
1318 | err = dpaa_eth_init_rx_port(rxport, bps, count, port_fqs->rx_errq, |
---|
1319 | port_fqs->rx_defq, &buf_layout[RX]); |
---|
1320 | |
---|
1321 | return err; |
---|
1322 | } |
---|
1323 | |
---|
1324 | static int dpaa_bman_release(const struct dpaa_bp *dpaa_bp, |
---|
1325 | struct bm_buffer *bmb, int cnt) |
---|
1326 | { |
---|
1327 | int err; |
---|
1328 | |
---|
1329 | err = bman_release(dpaa_bp->pool, bmb, cnt); |
---|
1330 | /* Should never occur, address anyway to avoid leaking the buffers */ |
---|
1331 | if (unlikely(WARN_ON(err)) && dpaa_bp->free_buf_cb) |
---|
1332 | while (cnt-- > 0) |
---|
1333 | dpaa_bp->free_buf_cb(dpaa_bp, &bmb[cnt]); |
---|
1334 | |
---|
1335 | return cnt; |
---|
1336 | } |
---|
1337 | |
---|
1338 | static void dpaa_release_sgt_members(struct qm_sg_entry *sgt) |
---|
1339 | { |
---|
1340 | struct bm_buffer bmb[DPAA_BUFF_RELEASE_MAX]; |
---|
1341 | struct dpaa_bp *dpaa_bp; |
---|
1342 | int i = 0, j; |
---|
1343 | |
---|
1344 | memset(bmb, 0, sizeof(bmb)); |
---|
1345 | |
---|
1346 | do { |
---|
1347 | dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); |
---|
1348 | if (!dpaa_bp) |
---|
1349 | return; |
---|
1350 | |
---|
1351 | j = 0; |
---|
1352 | do { |
---|
1353 | WARN_ON(qm_sg_entry_is_ext(&sgt[i])); |
---|
1354 | |
---|
1355 | bm_buffer_set64(&bmb[j], qm_sg_entry_get64(&sgt[i])); |
---|
1356 | |
---|
1357 | j++; i++; |
---|
1358 | } while (j < ARRAY_SIZE(bmb) && |
---|
1359 | !qm_sg_entry_is_final(&sgt[i - 1]) && |
---|
1360 | sgt[i - 1].bpid == sgt[i].bpid); |
---|
1361 | |
---|
1362 | dpaa_bman_release(dpaa_bp, bmb, j); |
---|
1363 | } while (!qm_sg_entry_is_final(&sgt[i - 1])); |
---|
1364 | } |
---|
1365 | |
---|
1366 | static void dpaa_fd_release(const struct net_device *net_dev, |
---|
1367 | const struct qm_fd *fd) |
---|
1368 | { |
---|
1369 | struct qm_sg_entry *sgt; |
---|
1370 | struct dpaa_bp *dpaa_bp; |
---|
1371 | struct bm_buffer bmb; |
---|
1372 | dma_addr_t addr; |
---|
1373 | void *vaddr; |
---|
1374 | |
---|
1375 | bmb.data = 0; |
---|
1376 | bm_buffer_set64(&bmb, qm_fd_addr(fd)); |
---|
1377 | |
---|
1378 | dpaa_bp = dpaa_bpid2pool(fd->bpid); |
---|
1379 | if (!dpaa_bp) |
---|
1380 | return; |
---|
1381 | |
---|
1382 | if (qm_fd_get_format(fd) == qm_fd_sg) { |
---|
1383 | vaddr = phys_to_virt(qm_fd_addr(fd)); |
---|
1384 | sgt = vaddr + qm_fd_get_offset(fd); |
---|
1385 | |
---|
1386 | #ifndef __rtems__ |
---|
1387 | dma_unmap_single(dpaa_bp->dev, qm_fd_addr(fd), dpaa_bp->size, |
---|
1388 | DMA_FROM_DEVICE); |
---|
1389 | #endif /* __rtems__ */ |
---|
1390 | |
---|
1391 | dpaa_release_sgt_members(sgt); |
---|
1392 | |
---|
1393 | #ifndef __rtems__ |
---|
1394 | addr = dma_map_single(dpaa_bp->dev, vaddr, dpaa_bp->size, |
---|
1395 | DMA_FROM_DEVICE); |
---|
1396 | if (dma_mapping_error(dpaa_bp->dev, addr)) { |
---|
1397 | dev_err(dpaa_bp->dev, "DMA mapping failed"); |
---|
1398 | return; |
---|
1399 | } |
---|
1400 | #else /* __rtems__ */ |
---|
1401 | addr = (dma_addr_t)vaddr; |
---|
1402 | #endif /* __rtems__ */ |
---|
1403 | bm_buffer_set64(&bmb, addr); |
---|
1404 | } |
---|
1405 | |
---|
1406 | dpaa_bman_release(dpaa_bp, &bmb, 1); |
---|
1407 | } |
---|
1408 | |
---|
1409 | static void count_ern(struct dpaa_percpu_priv *percpu_priv, |
---|
1410 | const union qm_mr_entry *msg) |
---|
1411 | { |
---|
1412 | switch (msg->ern.rc & QM_MR_RC_MASK) { |
---|
1413 | case QM_MR_RC_CGR_TAILDROP: |
---|
1414 | percpu_priv->ern_cnt.cg_tdrop++; |
---|
1415 | break; |
---|
1416 | case QM_MR_RC_WRED: |
---|
1417 | percpu_priv->ern_cnt.wred++; |
---|
1418 | break; |
---|
1419 | case QM_MR_RC_ERROR: |
---|
1420 | percpu_priv->ern_cnt.err_cond++; |
---|
1421 | break; |
---|
1422 | case QM_MR_RC_ORPWINDOW_EARLY: |
---|
1423 | percpu_priv->ern_cnt.early_window++; |
---|
1424 | break; |
---|
1425 | case QM_MR_RC_ORPWINDOW_LATE: |
---|
1426 | percpu_priv->ern_cnt.late_window++; |
---|
1427 | break; |
---|
1428 | case QM_MR_RC_FQ_TAILDROP: |
---|
1429 | percpu_priv->ern_cnt.fq_tdrop++; |
---|
1430 | break; |
---|
1431 | case QM_MR_RC_ORPWINDOW_RETIRED: |
---|
1432 | percpu_priv->ern_cnt.fq_retired++; |
---|
1433 | break; |
---|
1434 | case QM_MR_RC_ORP_ZERO: |
---|
1435 | percpu_priv->ern_cnt.orp_zero++; |
---|
1436 | break; |
---|
1437 | } |
---|
1438 | } |
---|
1439 | |
---|
1440 | #ifndef __rtems__ |
---|
1441 | /* Turn on HW checksum computation for this outgoing frame. |
---|
1442 | * If the current protocol is not something we support in this regard |
---|
1443 | * (or if the stack has already computed the SW checksum), we do nothing. |
---|
1444 | * |
---|
1445 | * Returns 0 if all goes well (or HW csum doesn't apply), and a negative value |
---|
1446 | * otherwise. |
---|
1447 | * |
---|
1448 | * Note that this function may modify the fd->cmd field and the skb data buffer |
---|
1449 | * (the Parse Results area). |
---|
1450 | */ |
---|
1451 | static int dpaa_enable_tx_csum(struct dpaa_priv *priv, |
---|
1452 | struct sk_buff *skb, |
---|
1453 | struct qm_fd *fd, |
---|
1454 | char *parse_results) |
---|
1455 | { |
---|
1456 | struct fman_prs_result *parse_result; |
---|
1457 | u16 ethertype = ntohs(skb->protocol); |
---|
1458 | struct ipv6hdr *ipv6h = NULL; |
---|
1459 | struct iphdr *iph; |
---|
1460 | int retval = 0; |
---|
1461 | u8 l4_proto; |
---|
1462 | |
---|
1463 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
---|
1464 | return 0; |
---|
1465 | |
---|
1466 | /* Note: L3 csum seems to be already computed in sw, but we can't choose |
---|
1467 | * L4 alone from the FM configuration anyway. |
---|
1468 | */ |
---|
1469 | |
---|
1470 | /* Fill in some fields of the Parse Results array, so the FMan |
---|
1471 | * can find them as if they came from the FMan Parser. |
---|
1472 | */ |
---|
1473 | parse_result = (struct fman_prs_result *)parse_results; |
---|
1474 | |
---|
1475 | /* If we're dealing with VLAN, get the real Ethernet type */ |
---|
1476 | if (ethertype == ETH_P_8021Q) { |
---|
1477 | /* We can't always assume the MAC header is set correctly |
---|
1478 | * by the stack, so reset to beginning of skb->data |
---|
1479 | */ |
---|
1480 | skb_reset_mac_header(skb); |
---|
1481 | ethertype = ntohs(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); |
---|
1482 | } |
---|
1483 | |
---|
1484 | /* Fill in the relevant L3 parse result fields |
---|
1485 | * and read the L4 protocol type |
---|
1486 | */ |
---|
1487 | switch (ethertype) { |
---|
1488 | case ETH_P_IP: |
---|
1489 | parse_result->l3r = cpu_to_be16(FM_L3_PARSE_RESULT_IPV4); |
---|
1490 | iph = ip_hdr(skb); |
---|
1491 | WARN_ON(!iph); |
---|
1492 | l4_proto = iph->protocol; |
---|
1493 | break; |
---|
1494 | case ETH_P_IPV6: |
---|
1495 | parse_result->l3r = cpu_to_be16(FM_L3_PARSE_RESULT_IPV6); |
---|
1496 | ipv6h = ipv6_hdr(skb); |
---|
1497 | WARN_ON(!ipv6h); |
---|
1498 | l4_proto = ipv6h->nexthdr; |
---|
1499 | break; |
---|
1500 | default: |
---|
1501 | /* We shouldn't even be here */ |
---|
1502 | if (net_ratelimit()) |
---|
1503 | netif_alert(priv, tx_err, priv->net_dev, |
---|
1504 | "Can't compute HW csum for L3 proto 0x%x\n", |
---|
1505 | ntohs(skb->protocol)); |
---|
1506 | retval = -EIO; |
---|
1507 | goto return_error; |
---|
1508 | } |
---|
1509 | |
---|
1510 | /* Fill in the relevant L4 parse result fields */ |
---|
1511 | switch (l4_proto) { |
---|
1512 | case IPPROTO_UDP: |
---|
1513 | parse_result->l4r = FM_L4_PARSE_RESULT_UDP; |
---|
1514 | break; |
---|
1515 | case IPPROTO_TCP: |
---|
1516 | parse_result->l4r = FM_L4_PARSE_RESULT_TCP; |
---|
1517 | break; |
---|
1518 | default: |
---|
1519 | if (net_ratelimit()) |
---|
1520 | netif_alert(priv, tx_err, priv->net_dev, |
---|
1521 | "Can't compute HW csum for L4 proto 0x%x\n", |
---|
1522 | l4_proto); |
---|
1523 | retval = -EIO; |
---|
1524 | goto return_error; |
---|
1525 | } |
---|
1526 | |
---|
1527 | /* At index 0 is IPOffset_1 as defined in the Parse Results */ |
---|
1528 | parse_result->ip_off[0] = (u8)skb_network_offset(skb); |
---|
1529 | parse_result->l4_off = (u8)skb_transport_offset(skb); |
---|
1530 | |
---|
1531 | /* Enable L3 (and L4, if TCP or UDP) HW checksum. */ |
---|
1532 | fd->cmd |= cpu_to_be32(FM_FD_CMD_RPD | FM_FD_CMD_DTC); |
---|
1533 | |
---|
1534 | /* On P1023 and similar platforms fd->cmd interpretation could |
---|
1535 | * be disabled by setting CONTEXT_A bit ICMD; currently this bit |
---|
1536 | * is not set so we do not need to check; in the future, if/when |
---|
1537 | * using context_a we need to check this bit |
---|
1538 | */ |
---|
1539 | |
---|
1540 | return_error: |
---|
1541 | return retval; |
---|
1542 | } |
---|
1543 | #endif /* __rtems__ */ |
---|
1544 | |
---|
1545 | static int dpaa_bp_add_8_bufs(const struct dpaa_bp *dpaa_bp) |
---|
1546 | { |
---|
1547 | #ifndef __rtems__ |
---|
1548 | struct device *dev = dpaa_bp->dev; |
---|
1549 | #endif /* __rtems__ */ |
---|
1550 | struct bm_buffer bmb[8]; |
---|
1551 | dma_addr_t addr; |
---|
1552 | #ifndef __rtems__ |
---|
1553 | void *new_buf; |
---|
1554 | #endif /* __rtems__ */ |
---|
1555 | u8 i; |
---|
1556 | |
---|
1557 | for (i = 0; i < 8; i++) { |
---|
1558 | #ifndef __rtems__ |
---|
1559 | new_buf = netdev_alloc_frag(dpaa_bp->raw_size); |
---|
1560 | if (unlikely(!new_buf)) { |
---|
1561 | dev_err(dev, "netdev_alloc_frag() failed, size %zu\n", |
---|
1562 | dpaa_bp->raw_size); |
---|
1563 | goto release_previous_buffs; |
---|
1564 | } |
---|
1565 | new_buf = PTR_ALIGN(new_buf, SMP_CACHE_BYTES); |
---|
1566 | |
---|
1567 | addr = dma_map_single(dev, new_buf, |
---|
1568 | dpaa_bp->size, DMA_FROM_DEVICE); |
---|
1569 | if (unlikely(dma_mapping_error(dev, addr))) { |
---|
1570 | dev_err(dpaa_bp->dev, "DMA map failed"); |
---|
1571 | goto release_previous_buffs; |
---|
1572 | } |
---|
1573 | #else /* __rtems__ */ |
---|
1574 | struct mbuf *m; |
---|
1575 | |
---|
1576 | m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); |
---|
1577 | if (unlikely(m == NULL)) { |
---|
1578 | goto release_previous_buffs; |
---|
1579 | } |
---|
1580 | |
---|
1581 | RTEMS_STATIC_ASSERT(DPAA_BP_RAW_SIZE == MCLBYTES, |
---|
1582 | DPAA_BP_RAW_SIZE); |
---|
1583 | *(struct mbuf **)(mtod(m, char *) + DPAA_MBUF_POINTER_OFFSET) = |
---|
1584 | m; |
---|
1585 | addr = mtod(m, dma_addr_t); |
---|
1586 | #endif /* __rtems__ */ |
---|
1587 | |
---|
1588 | bmb[i].data = 0; |
---|
1589 | bm_buffer_set64(&bmb[i], addr); |
---|
1590 | } |
---|
1591 | |
---|
1592 | release_bufs: |
---|
1593 | return dpaa_bman_release(dpaa_bp, bmb, i); |
---|
1594 | |
---|
1595 | release_previous_buffs: |
---|
1596 | #ifndef __rtems__ |
---|
1597 | WARN_ONCE(1, "dpaa_eth: failed to add buffers on Rx\n"); |
---|
1598 | #endif /* __rtems__ */ |
---|
1599 | |
---|
1600 | bm_buffer_set64(&bmb[i], 0); |
---|
1601 | /* Avoid releasing a completely null buffer; bman_release() requires |
---|
1602 | * at least one buffer. |
---|
1603 | */ |
---|
1604 | if (likely(i)) |
---|
1605 | goto release_bufs; |
---|
1606 | |
---|
1607 | return 0; |
---|
1608 | } |
---|
1609 | |
---|
1610 | static int dpaa_bp_seed(struct dpaa_bp *dpaa_bp) |
---|
1611 | { |
---|
1612 | int i; |
---|
1613 | |
---|
1614 | /* Give each CPU an allotment of "config_count" buffers */ |
---|
1615 | for_each_possible_cpu(i) { |
---|
1616 | int *count_ptr = per_cpu_ptr(dpaa_bp->percpu_count, i); |
---|
1617 | int j; |
---|
1618 | |
---|
1619 | /* Although we access another CPU's counters here |
---|
1620 | * we do it at boot time so it is safe |
---|
1621 | */ |
---|
1622 | for (j = 0; j < dpaa_bp->config_count; j += 8) |
---|
1623 | *count_ptr += dpaa_bp_add_8_bufs(dpaa_bp); |
---|
1624 | } |
---|
1625 | return 0; |
---|
1626 | } |
---|
1627 | |
---|
1628 | /* Add buffers/(pages) for Rx processing whenever bpool count falls below |
---|
1629 | * REFILL_THRESHOLD. |
---|
1630 | */ |
---|
1631 | static int dpaa_eth_refill_bpool(struct dpaa_bp *dpaa_bp, int *countptr) |
---|
1632 | { |
---|
1633 | int count = *countptr; |
---|
1634 | int new_bufs; |
---|
1635 | |
---|
1636 | if (unlikely(count < FSL_DPAA_ETH_REFILL_THRESHOLD)) { |
---|
1637 | do { |
---|
1638 | new_bufs = dpaa_bp_add_8_bufs(dpaa_bp); |
---|
1639 | if (unlikely(!new_bufs)) { |
---|
1640 | /* Avoid looping forever if we've temporarily |
---|
1641 | * run out of memory. We'll try again at the |
---|
1642 | * next NAPI cycle. |
---|
1643 | */ |
---|
1644 | break; |
---|
1645 | } |
---|
1646 | count += new_bufs; |
---|
1647 | } while (count < FSL_DPAA_ETH_MAX_BUF_COUNT); |
---|
1648 | |
---|
1649 | *countptr = count; |
---|
1650 | if (unlikely(count < FSL_DPAA_ETH_MAX_BUF_COUNT)) |
---|
1651 | return -ENOMEM; |
---|
1652 | } |
---|
1653 | |
---|
1654 | return 0; |
---|
1655 | } |
---|
1656 | |
---|
1657 | static int dpaa_eth_refill_bpools(struct dpaa_priv *priv) |
---|
1658 | { |
---|
1659 | struct dpaa_bp *dpaa_bp; |
---|
1660 | int *countptr; |
---|
1661 | int res, i; |
---|
1662 | |
---|
1663 | for (i = 0; i < DPAA_BPS_NUM; i++) { |
---|
1664 | dpaa_bp = priv->dpaa_bps[i]; |
---|
1665 | if (!dpaa_bp) |
---|
1666 | return -EINVAL; |
---|
1667 | countptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
1668 | res = dpaa_eth_refill_bpool(dpaa_bp, countptr); |
---|
1669 | if (res) |
---|
1670 | return res; |
---|
1671 | } |
---|
1672 | return 0; |
---|
1673 | } |
---|
1674 | |
---|
1675 | #ifndef __rtems__ |
---|
1676 | /* Cleanup function for outgoing frame descriptors that were built on Tx path, |
---|
1677 | * either contiguous frames or scatter/gather ones. |
---|
1678 | * Skb freeing is not handled here. |
---|
1679 | * |
---|
1680 | * This function may be called on error paths in the Tx function, so guard |
---|
1681 | * against cases when not all fd relevant fields were filled in. |
---|
1682 | * |
---|
1683 | * Return the skb backpointer, since for S/G frames the buffer containing it |
---|
1684 | * gets freed here. |
---|
1685 | */ |
---|
1686 | static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, |
---|
1687 | const struct qm_fd *fd) |
---|
1688 | { |
---|
1689 | const enum dma_data_direction dma_dir = DMA_TO_DEVICE; |
---|
1690 | struct device *dev = priv->net_dev->dev.parent; |
---|
1691 | dma_addr_t addr = qm_fd_addr(fd); |
---|
1692 | const struct qm_sg_entry *sgt; |
---|
1693 | struct sk_buff **skbh, *skb; |
---|
1694 | int nr_frags, i; |
---|
1695 | |
---|
1696 | skbh = (struct sk_buff **)phys_to_virt(addr); |
---|
1697 | skb = *skbh; |
---|
1698 | |
---|
1699 | if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) { |
---|
1700 | nr_frags = skb_shinfo(skb)->nr_frags; |
---|
1701 | dma_unmap_single(dev, addr, qm_fd_get_offset(fd) + |
---|
1702 | sizeof(struct qm_sg_entry) * (1 + nr_frags), |
---|
1703 | dma_dir); |
---|
1704 | |
---|
1705 | /* The sgt buffer has been allocated with netdev_alloc_frag(), |
---|
1706 | * it's from lowmem. |
---|
1707 | */ |
---|
1708 | sgt = phys_to_virt(addr + qm_fd_get_offset(fd)); |
---|
1709 | |
---|
1710 | /* sgt[0] is from lowmem, was dma_map_single()-ed */ |
---|
1711 | dma_unmap_single(dev, qm_sg_addr(&sgt[0]), |
---|
1712 | qm_sg_entry_get_len(&sgt[0]), dma_dir); |
---|
1713 | |
---|
1714 | /* remaining pages were mapped with skb_frag_dma_map() */ |
---|
1715 | for (i = 1; i < nr_frags; i++) { |
---|
1716 | WARN_ON(qm_sg_entry_is_ext(&sgt[i])); |
---|
1717 | |
---|
1718 | dma_unmap_page(dev, qm_sg_addr(&sgt[i]), |
---|
1719 | qm_sg_entry_get_len(&sgt[i]), dma_dir); |
---|
1720 | } |
---|
1721 | |
---|
1722 | /* Free the page frag that we allocated on Tx */ |
---|
1723 | skb_free_frag(phys_to_virt(addr)); |
---|
1724 | } else { |
---|
1725 | dma_unmap_single(dev, addr, |
---|
1726 | skb_tail_pointer(skb) - (u8 *)skbh, dma_dir); |
---|
1727 | } |
---|
1728 | |
---|
1729 | return skb; |
---|
1730 | } |
---|
1731 | |
---|
1732 | static u8 rx_csum_offload(const struct dpaa_priv *priv, const struct qm_fd *fd) |
---|
1733 | { |
---|
1734 | /* The parser has run and performed L4 checksum validation. |
---|
1735 | * We know there were no parser errors (and implicitly no |
---|
1736 | * L4 csum error), otherwise we wouldn't be here. |
---|
1737 | */ |
---|
1738 | if ((priv->net_dev->features & NETIF_F_RXCSUM) && |
---|
1739 | (be32_to_cpu(fd->status) & FM_FD_STAT_L4CV)) |
---|
1740 | return CHECKSUM_UNNECESSARY; |
---|
1741 | |
---|
1742 | /* We're here because either the parser didn't run or the L4 checksum |
---|
1743 | * was not verified. This may include the case of a UDP frame with |
---|
1744 | * checksum zero or an L4 proto other than TCP/UDP |
---|
1745 | */ |
---|
1746 | return CHECKSUM_NONE; |
---|
1747 | } |
---|
1748 | |
---|
1749 | /* Build a linear skb around the received buffer. |
---|
1750 | * We are guaranteed there is enough room at the end of the data buffer to |
---|
1751 | * accommodate the shared info area of the skb. |
---|
1752 | */ |
---|
1753 | static struct sk_buff *contig_fd_to_skb(const struct dpaa_priv *priv, |
---|
1754 | const struct qm_fd *fd) |
---|
1755 | { |
---|
1756 | ssize_t fd_off = qm_fd_get_offset(fd); |
---|
1757 | dma_addr_t addr = qm_fd_addr(fd); |
---|
1758 | struct dpaa_bp *dpaa_bp; |
---|
1759 | struct sk_buff *skb; |
---|
1760 | void *vaddr; |
---|
1761 | |
---|
1762 | vaddr = phys_to_virt(addr); |
---|
1763 | WARN_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES)); |
---|
1764 | |
---|
1765 | dpaa_bp = dpaa_bpid2pool(fd->bpid); |
---|
1766 | if (!dpaa_bp) |
---|
1767 | goto free_buffer; |
---|
1768 | |
---|
1769 | skb = build_skb(vaddr, dpaa_bp->size + |
---|
1770 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); |
---|
1771 | if (unlikely(!skb)) { |
---|
1772 | WARN_ONCE(1, "Build skb failure on Rx\n"); |
---|
1773 | goto free_buffer; |
---|
1774 | } |
---|
1775 | WARN_ON(fd_off != priv->rx_headroom); |
---|
1776 | skb_reserve(skb, fd_off); |
---|
1777 | skb_put(skb, qm_fd_get_length(fd)); |
---|
1778 | |
---|
1779 | skb->ip_summed = rx_csum_offload(priv, fd); |
---|
1780 | |
---|
1781 | return skb; |
---|
1782 | |
---|
1783 | free_buffer: |
---|
1784 | skb_free_frag(vaddr); |
---|
1785 | return NULL; |
---|
1786 | } |
---|
1787 | |
---|
1788 | /* Build an skb with the data of the first S/G entry in the linear portion and |
---|
1789 | * the rest of the frame as skb fragments. |
---|
1790 | * |
---|
1791 | * The page fragment holding the S/G Table is recycled here. |
---|
1792 | */ |
---|
1793 | static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv, |
---|
1794 | const struct qm_fd *fd) |
---|
1795 | { |
---|
1796 | ssize_t fd_off = qm_fd_get_offset(fd); |
---|
1797 | dma_addr_t addr = qm_fd_addr(fd); |
---|
1798 | const struct qm_sg_entry *sgt; |
---|
1799 | struct page *page, *head_page; |
---|
1800 | struct dpaa_bp *dpaa_bp; |
---|
1801 | void *vaddr, *sg_vaddr; |
---|
1802 | int frag_off, frag_len; |
---|
1803 | struct sk_buff *skb; |
---|
1804 | dma_addr_t sg_addr; |
---|
1805 | int page_offset; |
---|
1806 | unsigned int sz; |
---|
1807 | int *count_ptr; |
---|
1808 | int i; |
---|
1809 | |
---|
1810 | vaddr = phys_to_virt(addr); |
---|
1811 | WARN_ON(!IS_ALIGNED((unsigned long)vaddr, SMP_CACHE_BYTES)); |
---|
1812 | |
---|
1813 | /* Iterate through the SGT entries and add data buffers to the skb */ |
---|
1814 | sgt = vaddr + fd_off; |
---|
1815 | for (i = 0; i < DPAA_SGT_MAX_ENTRIES; i++) { |
---|
1816 | /* Extension bit is not supported */ |
---|
1817 | WARN_ON(qm_sg_entry_is_ext(&sgt[i])); |
---|
1818 | |
---|
1819 | sg_addr = qm_sg_addr(&sgt[i]); |
---|
1820 | sg_vaddr = phys_to_virt(sg_addr); |
---|
1821 | WARN_ON(!IS_ALIGNED((unsigned long)sg_vaddr, |
---|
1822 | SMP_CACHE_BYTES)); |
---|
1823 | |
---|
1824 | /* We may use multiple Rx pools */ |
---|
1825 | dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); |
---|
1826 | if (!dpaa_bp) |
---|
1827 | goto free_buffers; |
---|
1828 | |
---|
1829 | count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
1830 | dma_unmap_single(dpaa_bp->dev, sg_addr, dpaa_bp->size, |
---|
1831 | DMA_FROM_DEVICE); |
---|
1832 | if (i == 0) { |
---|
1833 | sz = dpaa_bp->size + |
---|
1834 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); |
---|
1835 | skb = build_skb(sg_vaddr, sz); |
---|
1836 | if (WARN_ON(unlikely(!skb))) |
---|
1837 | goto free_buffers; |
---|
1838 | |
---|
1839 | skb->ip_summed = rx_csum_offload(priv, fd); |
---|
1840 | |
---|
1841 | /* Make sure forwarded skbs will have enough space |
---|
1842 | * on Tx, if extra headers are added. |
---|
1843 | */ |
---|
1844 | WARN_ON(fd_off != priv->rx_headroom); |
---|
1845 | skb_reserve(skb, fd_off); |
---|
1846 | skb_put(skb, qm_sg_entry_get_len(&sgt[i])); |
---|
1847 | } else { |
---|
1848 | /* Not the first S/G entry; all data from buffer will |
---|
1849 | * be added in an skb fragment; fragment index is offset |
---|
1850 | * by one since first S/G entry was incorporated in the |
---|
1851 | * linear part of the skb. |
---|
1852 | * |
---|
1853 | * Caution: 'page' may be a tail page. |
---|
1854 | */ |
---|
1855 | page = virt_to_page(sg_vaddr); |
---|
1856 | head_page = virt_to_head_page(sg_vaddr); |
---|
1857 | |
---|
1858 | /* Compute offset in (possibly tail) page */ |
---|
1859 | page_offset = ((unsigned long)sg_vaddr & |
---|
1860 | (PAGE_SIZE - 1)) + |
---|
1861 | (page_address(page) - page_address(head_page)); |
---|
1862 | /* page_offset only refers to the beginning of sgt[i]; |
---|
1863 | * but the buffer itself may have an internal offset. |
---|
1864 | */ |
---|
1865 | frag_off = qm_sg_entry_get_off(&sgt[i]) + page_offset; |
---|
1866 | frag_len = qm_sg_entry_get_len(&sgt[i]); |
---|
1867 | /* skb_add_rx_frag() does no checking on the page; if |
---|
1868 | * we pass it a tail page, we'll end up with |
---|
1869 | * bad page accounting and eventually with segafults. |
---|
1870 | */ |
---|
1871 | skb_add_rx_frag(skb, i - 1, head_page, frag_off, |
---|
1872 | frag_len, dpaa_bp->size); |
---|
1873 | } |
---|
1874 | /* Update the pool count for the current {cpu x bpool} */ |
---|
1875 | (*count_ptr)--; |
---|
1876 | |
---|
1877 | if (qm_sg_entry_is_final(&sgt[i])) |
---|
1878 | break; |
---|
1879 | } |
---|
1880 | WARN_ONCE(i == DPAA_SGT_MAX_ENTRIES, "No final bit on SGT\n"); |
---|
1881 | |
---|
1882 | /* free the SG table buffer */ |
---|
1883 | skb_free_frag(vaddr); |
---|
1884 | |
---|
1885 | return skb; |
---|
1886 | |
---|
1887 | free_buffers: |
---|
1888 | /* compensate sw bpool counter changes */ |
---|
1889 | for (i--; i >= 0; i--) { |
---|
1890 | dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); |
---|
1891 | if (dpaa_bp) { |
---|
1892 | count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
1893 | (*count_ptr)++; |
---|
1894 | } |
---|
1895 | } |
---|
1896 | /* free all the SG entries */ |
---|
1897 | for (i = 0; i < DPAA_SGT_MAX_ENTRIES ; i++) { |
---|
1898 | sg_addr = qm_sg_addr(&sgt[i]); |
---|
1899 | sg_vaddr = phys_to_virt(sg_addr); |
---|
1900 | skb_free_frag(sg_vaddr); |
---|
1901 | dpaa_bp = dpaa_bpid2pool(sgt[i].bpid); |
---|
1902 | if (dpaa_bp) { |
---|
1903 | count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
1904 | (*count_ptr)--; |
---|
1905 | } |
---|
1906 | |
---|
1907 | if (qm_sg_entry_is_final(&sgt[i])) |
---|
1908 | break; |
---|
1909 | } |
---|
1910 | /* free the SGT fragment */ |
---|
1911 | skb_free_frag(vaddr); |
---|
1912 | |
---|
1913 | return NULL; |
---|
1914 | } |
---|
1915 | |
---|
1916 | static int skb_to_contig_fd(struct dpaa_priv *priv, |
---|
1917 | struct sk_buff *skb, struct qm_fd *fd, |
---|
1918 | int *offset) |
---|
1919 | { |
---|
1920 | struct net_device *net_dev = priv->net_dev; |
---|
1921 | struct device *dev = net_dev->dev.parent; |
---|
1922 | enum dma_data_direction dma_dir; |
---|
1923 | unsigned char *buffer_start; |
---|
1924 | struct sk_buff **skbh; |
---|
1925 | dma_addr_t addr; |
---|
1926 | int err; |
---|
1927 | |
---|
1928 | /* We are guaranteed to have at least tx_headroom bytes |
---|
1929 | * available, so just use that for offset. |
---|
1930 | */ |
---|
1931 | fd->bpid = FSL_DPAA_BPID_INV; |
---|
1932 | buffer_start = skb->data - priv->tx_headroom; |
---|
1933 | dma_dir = DMA_TO_DEVICE; |
---|
1934 | |
---|
1935 | skbh = (struct sk_buff **)buffer_start; |
---|
1936 | *skbh = skb; |
---|
1937 | |
---|
1938 | /* Enable L3/L4 hardware checksum computation. |
---|
1939 | * |
---|
1940 | * We must do this before dma_map_single(DMA_TO_DEVICE), because we may |
---|
1941 | * need to write into the skb. |
---|
1942 | */ |
---|
1943 | err = dpaa_enable_tx_csum(priv, skb, fd, |
---|
1944 | ((char *)skbh) + DPAA_TX_PRIV_DATA_SIZE); |
---|
1945 | if (unlikely(err < 0)) { |
---|
1946 | if (net_ratelimit()) |
---|
1947 | netif_err(priv, tx_err, net_dev, "HW csum error: %d\n", |
---|
1948 | err); |
---|
1949 | return err; |
---|
1950 | } |
---|
1951 | |
---|
1952 | /* Fill in the rest of the FD fields */ |
---|
1953 | qm_fd_set_contig(fd, priv->tx_headroom, skb->len); |
---|
1954 | fd->cmd |= cpu_to_be32(FM_FD_CMD_FCO); |
---|
1955 | |
---|
1956 | /* Map the entire buffer size that may be seen by FMan, but no more */ |
---|
1957 | addr = dma_map_single(dev, skbh, |
---|
1958 | skb_tail_pointer(skb) - buffer_start, dma_dir); |
---|
1959 | if (unlikely(dma_mapping_error(dev, addr))) { |
---|
1960 | if (net_ratelimit()) |
---|
1961 | netif_err(priv, tx_err, net_dev, "dma_map_single() failed\n"); |
---|
1962 | return -EINVAL; |
---|
1963 | } |
---|
1964 | qm_fd_addr_set64(fd, addr); |
---|
1965 | |
---|
1966 | return 0; |
---|
1967 | } |
---|
1968 | |
---|
1969 | static int skb_to_sg_fd(struct dpaa_priv *priv, |
---|
1970 | struct sk_buff *skb, struct qm_fd *fd) |
---|
1971 | { |
---|
1972 | const enum dma_data_direction dma_dir = DMA_TO_DEVICE; |
---|
1973 | const int nr_frags = skb_shinfo(skb)->nr_frags; |
---|
1974 | struct net_device *net_dev = priv->net_dev; |
---|
1975 | struct device *dev = net_dev->dev.parent; |
---|
1976 | struct qm_sg_entry *sgt; |
---|
1977 | struct sk_buff **skbh; |
---|
1978 | int i, j, err, sz; |
---|
1979 | void *buffer_start; |
---|
1980 | skb_frag_t *frag; |
---|
1981 | dma_addr_t addr; |
---|
1982 | size_t frag_len; |
---|
1983 | void *sgt_buf; |
---|
1984 | |
---|
1985 | /* get a page frag to store the SGTable */ |
---|
1986 | sz = SKB_DATA_ALIGN(priv->tx_headroom + |
---|
1987 | sizeof(struct qm_sg_entry) * (1 + nr_frags)); |
---|
1988 | sgt_buf = netdev_alloc_frag(sz); |
---|
1989 | if (unlikely(!sgt_buf)) { |
---|
1990 | netdev_err(net_dev, "netdev_alloc_frag() failed for size %d\n", |
---|
1991 | sz); |
---|
1992 | return -ENOMEM; |
---|
1993 | } |
---|
1994 | |
---|
1995 | /* Enable L3/L4 hardware checksum computation. |
---|
1996 | * |
---|
1997 | * We must do this before dma_map_single(DMA_TO_DEVICE), because we may |
---|
1998 | * need to write into the skb. |
---|
1999 | */ |
---|
2000 | err = dpaa_enable_tx_csum(priv, skb, fd, |
---|
2001 | sgt_buf + DPAA_TX_PRIV_DATA_SIZE); |
---|
2002 | if (unlikely(err < 0)) { |
---|
2003 | if (net_ratelimit()) |
---|
2004 | netif_err(priv, tx_err, net_dev, "HW csum error: %d\n", |
---|
2005 | err); |
---|
2006 | goto csum_failed; |
---|
2007 | } |
---|
2008 | |
---|
2009 | sgt = (struct qm_sg_entry *)(sgt_buf + priv->tx_headroom); |
---|
2010 | qm_sg_entry_set_len(&sgt[0], skb_headlen(skb)); |
---|
2011 | sgt[0].bpid = FSL_DPAA_BPID_INV; |
---|
2012 | sgt[0].offset = 0; |
---|
2013 | addr = dma_map_single(dev, skb->data, |
---|
2014 | skb_headlen(skb), dma_dir); |
---|
2015 | if (unlikely(dma_mapping_error(dev, addr))) { |
---|
2016 | dev_err(dev, "DMA mapping failed"); |
---|
2017 | err = -EINVAL; |
---|
2018 | goto sg0_map_failed; |
---|
2019 | } |
---|
2020 | qm_sg_entry_set64(&sgt[0], addr); |
---|
2021 | |
---|
2022 | /* populate the rest of SGT entries */ |
---|
2023 | frag = &skb_shinfo(skb)->frags[0]; |
---|
2024 | frag_len = frag->size; |
---|
2025 | for (i = 1; i <= nr_frags; i++, frag++) { |
---|
2026 | WARN_ON(!skb_frag_page(frag)); |
---|
2027 | addr = skb_frag_dma_map(dev, frag, 0, |
---|
2028 | frag_len, dma_dir); |
---|
2029 | if (unlikely(dma_mapping_error(dev, addr))) { |
---|
2030 | dev_err(dev, "DMA mapping failed"); |
---|
2031 | err = -EINVAL; |
---|
2032 | goto sg_map_failed; |
---|
2033 | } |
---|
2034 | |
---|
2035 | qm_sg_entry_set_len(&sgt[i], frag_len); |
---|
2036 | sgt[i].bpid = FSL_DPAA_BPID_INV; |
---|
2037 | sgt[i].offset = 0; |
---|
2038 | |
---|
2039 | /* keep the offset in the address */ |
---|
2040 | qm_sg_entry_set64(&sgt[i], addr); |
---|
2041 | frag_len = frag->size; |
---|
2042 | } |
---|
2043 | qm_sg_entry_set_f(&sgt[i - 1], frag_len); |
---|
2044 | |
---|
2045 | qm_fd_set_sg(fd, priv->tx_headroom, skb->len); |
---|
2046 | |
---|
2047 | /* DMA map the SGT page */ |
---|
2048 | buffer_start = (void *)sgt - priv->tx_headroom; |
---|
2049 | skbh = (struct sk_buff **)buffer_start; |
---|
2050 | *skbh = skb; |
---|
2051 | |
---|
2052 | addr = dma_map_single(dev, buffer_start, priv->tx_headroom + |
---|
2053 | sizeof(struct qm_sg_entry) * (1 + nr_frags), |
---|
2054 | dma_dir); |
---|
2055 | if (unlikely(dma_mapping_error(dev, addr))) { |
---|
2056 | dev_err(dev, "DMA mapping failed"); |
---|
2057 | err = -EINVAL; |
---|
2058 | goto sgt_map_failed; |
---|
2059 | } |
---|
2060 | |
---|
2061 | fd->bpid = FSL_DPAA_BPID_INV; |
---|
2062 | fd->cmd |= cpu_to_be32(FM_FD_CMD_FCO); |
---|
2063 | qm_fd_addr_set64(fd, addr); |
---|
2064 | |
---|
2065 | return 0; |
---|
2066 | |
---|
2067 | sgt_map_failed: |
---|
2068 | sg_map_failed: |
---|
2069 | for (j = 0; j < i; j++) |
---|
2070 | dma_unmap_page(dev, qm_sg_addr(&sgt[j]), |
---|
2071 | qm_sg_entry_get_len(&sgt[j]), dma_dir); |
---|
2072 | sg0_map_failed: |
---|
2073 | csum_failed: |
---|
2074 | skb_free_frag(sgt_buf); |
---|
2075 | |
---|
2076 | return err; |
---|
2077 | } |
---|
2078 | |
---|
2079 | static inline int dpaa_xmit(struct dpaa_priv *priv, |
---|
2080 | struct rtnl_link_stats64 *percpu_stats, |
---|
2081 | int queue, |
---|
2082 | struct qm_fd *fd) |
---|
2083 | { |
---|
2084 | struct qman_fq *egress_fq; |
---|
2085 | int err, i; |
---|
2086 | |
---|
2087 | egress_fq = priv->egress_fqs[queue]; |
---|
2088 | if (fd->bpid == FSL_DPAA_BPID_INV) |
---|
2089 | fd->cmd |= cpu_to_be32(qman_fq_fqid(priv->conf_fqs[queue])); |
---|
2090 | |
---|
2091 | /* Trace this Tx fd */ |
---|
2092 | trace_dpaa_tx_fd(priv->net_dev, egress_fq, fd); |
---|
2093 | |
---|
2094 | for (i = 0; i < DPAA_ENQUEUE_RETRIES; i++) { |
---|
2095 | err = qman_enqueue(egress_fq, fd); |
---|
2096 | if (err != -EBUSY) |
---|
2097 | break; |
---|
2098 | } |
---|
2099 | |
---|
2100 | if (unlikely(err < 0)) { |
---|
2101 | percpu_stats->tx_errors++; |
---|
2102 | percpu_stats->tx_fifo_errors++; |
---|
2103 | return err; |
---|
2104 | } |
---|
2105 | |
---|
2106 | percpu_stats->tx_packets++; |
---|
2107 | percpu_stats->tx_bytes += qm_fd_get_length(fd); |
---|
2108 | |
---|
2109 | return 0; |
---|
2110 | } |
---|
2111 | |
---|
2112 | static int dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev) |
---|
2113 | { |
---|
2114 | const int queue_mapping = skb_get_queue_mapping(skb); |
---|
2115 | bool nonlinear = skb_is_nonlinear(skb); |
---|
2116 | struct rtnl_link_stats64 *percpu_stats; |
---|
2117 | struct dpaa_percpu_priv *percpu_priv; |
---|
2118 | struct dpaa_priv *priv; |
---|
2119 | struct qm_fd fd; |
---|
2120 | int offset = 0; |
---|
2121 | int err = 0; |
---|
2122 | |
---|
2123 | priv = netdev_priv(net_dev); |
---|
2124 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2125 | percpu_stats = &percpu_priv->stats; |
---|
2126 | |
---|
2127 | qm_fd_clear_fd(&fd); |
---|
2128 | |
---|
2129 | if (!nonlinear) { |
---|
2130 | /* We're going to store the skb backpointer at the beginning |
---|
2131 | * of the data buffer, so we need a privately owned skb |
---|
2132 | * |
---|
2133 | * We've made sure skb is not shared in dev->priv_flags, |
---|
2134 | * we need to verify the skb head is not cloned |
---|
2135 | */ |
---|
2136 | if (skb_cow_head(skb, priv->tx_headroom)) |
---|
2137 | goto enomem; |
---|
2138 | |
---|
2139 | WARN_ON(skb_is_nonlinear(skb)); |
---|
2140 | } |
---|
2141 | |
---|
2142 | /* MAX_SKB_FRAGS is equal or larger than our dpaa_SGT_MAX_ENTRIES; |
---|
2143 | * make sure we don't feed FMan with more fragments than it supports. |
---|
2144 | */ |
---|
2145 | if (nonlinear && |
---|
2146 | likely(skb_shinfo(skb)->nr_frags < DPAA_SGT_MAX_ENTRIES)) { |
---|
2147 | /* Just create a S/G fd based on the skb */ |
---|
2148 | err = skb_to_sg_fd(priv, skb, &fd); |
---|
2149 | percpu_priv->tx_frag_skbuffs++; |
---|
2150 | } else { |
---|
2151 | /* If the egress skb contains more fragments than we support |
---|
2152 | * we have no choice but to linearize it ourselves. |
---|
2153 | */ |
---|
2154 | if (unlikely(nonlinear) && __skb_linearize(skb)) |
---|
2155 | goto enomem; |
---|
2156 | |
---|
2157 | /* Finally, create a contig FD from this skb */ |
---|
2158 | err = skb_to_contig_fd(priv, skb, &fd, &offset); |
---|
2159 | } |
---|
2160 | if (unlikely(err < 0)) |
---|
2161 | goto skb_to_fd_failed; |
---|
2162 | |
---|
2163 | if (likely(dpaa_xmit(priv, percpu_stats, queue_mapping, &fd) == 0)) |
---|
2164 | return NETDEV_TX_OK; |
---|
2165 | |
---|
2166 | dpaa_cleanup_tx_fd(priv, &fd); |
---|
2167 | skb_to_fd_failed: |
---|
2168 | enomem: |
---|
2169 | percpu_stats->tx_errors++; |
---|
2170 | dev_kfree_skb(skb); |
---|
2171 | return NETDEV_TX_OK; |
---|
2172 | } |
---|
2173 | #endif /* __rtems__ */ |
---|
2174 | |
---|
2175 | static void dpaa_rx_error(struct net_device *net_dev, |
---|
2176 | const struct dpaa_priv *priv, |
---|
2177 | struct dpaa_percpu_priv *percpu_priv, |
---|
2178 | const struct qm_fd *fd, |
---|
2179 | u32 fqid) |
---|
2180 | { |
---|
2181 | #ifndef __rtems__ |
---|
2182 | if (net_ratelimit()) |
---|
2183 | netif_err(priv, hw, net_dev, "Err FD status = 0x%08x\n", |
---|
2184 | be32_to_cpu(fd->status) & FM_FD_STAT_RX_ERRORS); |
---|
2185 | |
---|
2186 | percpu_priv->stats.rx_errors++; |
---|
2187 | #endif /* __rtems__ */ |
---|
2188 | |
---|
2189 | if (be32_to_cpu(fd->status) & FM_FD_ERR_DMA) |
---|
2190 | percpu_priv->rx_errors.dme++; |
---|
2191 | if (be32_to_cpu(fd->status) & FM_FD_ERR_PHYSICAL) |
---|
2192 | percpu_priv->rx_errors.fpe++; |
---|
2193 | if (be32_to_cpu(fd->status) & FM_FD_ERR_SIZE) |
---|
2194 | percpu_priv->rx_errors.fse++; |
---|
2195 | if (be32_to_cpu(fd->status) & FM_FD_ERR_PRS_HDR_ERR) |
---|
2196 | percpu_priv->rx_errors.phe++; |
---|
2197 | |
---|
2198 | dpaa_fd_release(net_dev, fd); |
---|
2199 | } |
---|
2200 | |
---|
2201 | static void dpaa_tx_error(struct net_device *net_dev, |
---|
2202 | const struct dpaa_priv *priv, |
---|
2203 | struct dpaa_percpu_priv *percpu_priv, |
---|
2204 | const struct qm_fd *fd, |
---|
2205 | u32 fqid) |
---|
2206 | { |
---|
2207 | #ifndef __rtems__ |
---|
2208 | struct sk_buff *skb; |
---|
2209 | |
---|
2210 | if (net_ratelimit()) |
---|
2211 | netif_warn(priv, hw, net_dev, "FD status = 0x%08x\n", |
---|
2212 | be32_to_cpu(fd->status) & FM_FD_STAT_TX_ERRORS); |
---|
2213 | |
---|
2214 | percpu_priv->stats.tx_errors++; |
---|
2215 | #else /* __rtems__ */ |
---|
2216 | struct ifnet *ifp = net_dev->ifp; |
---|
2217 | |
---|
2218 | if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); |
---|
2219 | #endif /* __rtems__ */ |
---|
2220 | |
---|
2221 | #ifndef __rtems__ |
---|
2222 | skb = dpaa_cleanup_tx_fd(priv, fd); |
---|
2223 | dev_kfree_skb(skb); |
---|
2224 | #else /* __rtems__ */ |
---|
2225 | dpaa_cleanup_tx_fd(ifp, fd); |
---|
2226 | #endif /* __rtems__ */ |
---|
2227 | } |
---|
2228 | |
---|
2229 | #ifndef __rtems__ |
---|
2230 | static int dpaa_eth_poll(struct napi_struct *napi, int budget) |
---|
2231 | { |
---|
2232 | struct dpaa_napi_portal *np = |
---|
2233 | container_of(napi, struct dpaa_napi_portal, napi); |
---|
2234 | |
---|
2235 | int cleaned = qman_p_poll_dqrr(np->p, budget); |
---|
2236 | |
---|
2237 | if (cleaned < budget) { |
---|
2238 | napi_complete_done(napi, cleaned); |
---|
2239 | qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); |
---|
2240 | |
---|
2241 | } else if (np->down) { |
---|
2242 | qman_p_irqsource_add(np->p, QM_PIRQ_DQRI); |
---|
2243 | } |
---|
2244 | |
---|
2245 | return cleaned; |
---|
2246 | } |
---|
2247 | #endif /* __rtems__ */ |
---|
2248 | |
---|
2249 | static void dpaa_tx_conf(struct net_device *net_dev, |
---|
2250 | const struct dpaa_priv *priv, |
---|
2251 | struct dpaa_percpu_priv *percpu_priv, |
---|
2252 | const struct qm_fd *fd, |
---|
2253 | u32 fqid) |
---|
2254 | { |
---|
2255 | #ifndef __rtems__ |
---|
2256 | struct sk_buff *skb; |
---|
2257 | |
---|
2258 | if (unlikely(be32_to_cpu(fd->status) & FM_FD_STAT_TX_ERRORS)) { |
---|
2259 | if (net_ratelimit()) |
---|
2260 | netif_warn(priv, hw, net_dev, "FD status = 0x%08x\n", |
---|
2261 | be32_to_cpu(fd->status) & |
---|
2262 | FM_FD_STAT_TX_ERRORS); |
---|
2263 | |
---|
2264 | percpu_priv->stats.tx_errors++; |
---|
2265 | } |
---|
2266 | |
---|
2267 | percpu_priv->tx_confirm++; |
---|
2268 | |
---|
2269 | skb = dpaa_cleanup_tx_fd(priv, fd); |
---|
2270 | |
---|
2271 | consume_skb(skb); |
---|
2272 | #else /* __rtems__ */ |
---|
2273 | struct ifnet *ifp = net_dev->ifp; |
---|
2274 | |
---|
2275 | if (unlikely(be32_to_cpu(fd->status) & FM_FD_STAT_TX_ERRORS) != 0) { |
---|
2276 | if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); |
---|
2277 | } |
---|
2278 | |
---|
2279 | dpaa_cleanup_tx_fd(ifp, fd); |
---|
2280 | #endif /* __rtems__ */ |
---|
2281 | } |
---|
2282 | |
---|
2283 | static inline int dpaa_eth_napi_schedule(struct dpaa_percpu_priv *percpu_priv, |
---|
2284 | struct qman_portal *portal) |
---|
2285 | { |
---|
2286 | #ifndef __rtems__ |
---|
2287 | if (unlikely(in_irq() || !in_serving_softirq())) { |
---|
2288 | /* Disable QMan IRQ and invoke NAPI */ |
---|
2289 | qman_p_irqsource_remove(portal, QM_PIRQ_DQRI); |
---|
2290 | |
---|
2291 | percpu_priv->np.p = portal; |
---|
2292 | napi_schedule(&percpu_priv->np.napi); |
---|
2293 | percpu_priv->in_interrupt++; |
---|
2294 | return 1; |
---|
2295 | } |
---|
2296 | #endif /* __rtems__ */ |
---|
2297 | return 0; |
---|
2298 | } |
---|
2299 | |
---|
2300 | static enum qman_cb_dqrr_result rx_error_dqrr(struct qman_portal *portal, |
---|
2301 | struct qman_fq *fq, |
---|
2302 | const struct qm_dqrr_entry *dq) |
---|
2303 | { |
---|
2304 | struct dpaa_fq *dpaa_fq = container_of(fq, struct dpaa_fq, fq_base); |
---|
2305 | struct dpaa_percpu_priv *percpu_priv; |
---|
2306 | struct net_device *net_dev; |
---|
2307 | struct dpaa_bp *dpaa_bp; |
---|
2308 | struct dpaa_priv *priv; |
---|
2309 | |
---|
2310 | net_dev = dpaa_fq->net_dev; |
---|
2311 | priv = netdev_priv(net_dev); |
---|
2312 | dpaa_bp = dpaa_bpid2pool(dq->fd.bpid); |
---|
2313 | if (!dpaa_bp) |
---|
2314 | return qman_cb_dqrr_consume; |
---|
2315 | |
---|
2316 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2317 | |
---|
2318 | if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
---|
2319 | return qman_cb_dqrr_stop; |
---|
2320 | |
---|
2321 | if (dpaa_eth_refill_bpools(priv)) |
---|
2322 | /* Unable to refill the buffer pool due to insufficient |
---|
2323 | * system memory. Just release the frame back into the pool, |
---|
2324 | * otherwise we'll soon end up with an empty buffer pool. |
---|
2325 | */ |
---|
2326 | dpaa_fd_release(net_dev, &dq->fd); |
---|
2327 | else |
---|
2328 | dpaa_rx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
---|
2329 | |
---|
2330 | return qman_cb_dqrr_consume; |
---|
2331 | } |
---|
2332 | |
---|
2333 | #ifdef __rtems__ |
---|
2334 | static struct mbuf * |
---|
2335 | dpaa_bp_addr_to_mbuf(dma_addr_t addr) |
---|
2336 | { |
---|
2337 | void *vaddr = phys_to_virt(addr); |
---|
2338 | |
---|
2339 | return (*(struct mbuf **)(vaddr + DPAA_MBUF_POINTER_OFFSET)); |
---|
2340 | } |
---|
2341 | |
---|
2342 | static struct mbuf * |
---|
2343 | contig_fd_to_mbuf(const struct qm_fd *fd, struct ifnet *ifp) |
---|
2344 | { |
---|
2345 | struct mbuf *m; |
---|
2346 | ssize_t fd_off = qm_fd_get_offset(fd); |
---|
2347 | dma_addr_t addr = qm_fd_addr(fd); |
---|
2348 | |
---|
2349 | m = dpaa_bp_addr_to_mbuf(addr); |
---|
2350 | m->m_pkthdr.rcvif = ifp; |
---|
2351 | m->m_pkthdr.len = m->m_len = qm_fd_get_length(fd); |
---|
2352 | m->m_data = mtod(m, char *) + fd_off; |
---|
2353 | |
---|
2354 | return (m); |
---|
2355 | } |
---|
2356 | |
---|
2357 | static void |
---|
2358 | dpaa_bp_recycle_frag(struct dpaa_bp *dpaa_bp, dma_addr_t addr, int *count_ptr) |
---|
2359 | { |
---|
2360 | struct bm_buffer bmb; |
---|
2361 | |
---|
2362 | bm_buffer_set64(&bmb, addr); |
---|
2363 | |
---|
2364 | while (bman_release(dpaa_bp->pool, &bmb, 1)) |
---|
2365 | cpu_relax(); |
---|
2366 | |
---|
2367 | ++(*count_ptr); |
---|
2368 | } |
---|
2369 | |
---|
2370 | static struct mbuf * |
---|
2371 | sg_fd_to_mbuf(struct dpaa_bp *dpaa_bp, const struct qm_fd *fd, |
---|
2372 | struct ifnet *ifp, int *count_ptr) |
---|
2373 | { |
---|
2374 | ssize_t fd_off = qm_fd_get_offset(fd); |
---|
2375 | dma_addr_t addr = qm_fd_addr(fd); |
---|
2376 | const struct qm_sg_entry *sgt; |
---|
2377 | int i; |
---|
2378 | int len; |
---|
2379 | struct mbuf *m; |
---|
2380 | struct mbuf *last; |
---|
2381 | |
---|
2382 | sgt = (const struct qm_sg_entry *)((char *)phys_to_virt(addr) + fd_off); |
---|
2383 | len = 0; |
---|
2384 | |
---|
2385 | for (i = 0; i < DPAA_SGT_MAX_ENTRIES; ++i) { |
---|
2386 | dma_addr_t sg_addr; |
---|
2387 | int sg_len; |
---|
2388 | struct mbuf *n; |
---|
2389 | |
---|
2390 | BSD_ASSERT(!qm_sg_entry_is_ext(&sgt[i])); |
---|
2391 | BSD_ASSERT(dpaa_bp == dpaa_bpid2pool(sgt[i].bpid)); |
---|
2392 | |
---|
2393 | sg_addr = qm_sg_addr(&sgt[i]); |
---|
2394 | n = dpaa_bp_addr_to_mbuf(sg_addr); |
---|
2395 | |
---|
2396 | sg_len = qm_sg_entry_get_len(&sgt[i]); |
---|
2397 | len += sg_len; |
---|
2398 | |
---|
2399 | if (i == 0) { |
---|
2400 | m = n; |
---|
2401 | } else { |
---|
2402 | last->m_next = n; |
---|
2403 | } |
---|
2404 | |
---|
2405 | n->m_len = sg_len; |
---|
2406 | n->m_data = mtod(n, char *) + sgt[i].offset; |
---|
2407 | last = n; |
---|
2408 | |
---|
2409 | --(*count_ptr); |
---|
2410 | |
---|
2411 | if (qm_sg_entry_is_final(&sgt[i])) { |
---|
2412 | break; |
---|
2413 | } |
---|
2414 | } |
---|
2415 | |
---|
2416 | m->m_pkthdr.rcvif = ifp; |
---|
2417 | m->m_pkthdr.len = len; |
---|
2418 | |
---|
2419 | dpaa_bp_recycle_frag(dpaa_bp, addr, count_ptr); |
---|
2420 | |
---|
2421 | return (m); |
---|
2422 | } |
---|
2423 | |
---|
2424 | static void |
---|
2425 | dpaa_rx(struct net_device *net_dev, struct qman_portal *portal, |
---|
2426 | const struct dpaa_priv *priv, struct dpaa_percpu_priv *percpu_priv, |
---|
2427 | const struct qm_fd *fd, u32 fqid, int *count_ptr) |
---|
2428 | { |
---|
2429 | struct dpaa_bp *dpaa_bp; |
---|
2430 | u32 fd_status; |
---|
2431 | enum qm_fd_format fd_format; |
---|
2432 | struct mbuf *m; |
---|
2433 | struct ifnet *ifp; |
---|
2434 | |
---|
2435 | fd_status = be32_to_cpu(fd->status); |
---|
2436 | ifp = net_dev->ifp; |
---|
2437 | |
---|
2438 | if (unlikely(fd_status & FM_FD_STAT_RX_ERRORS) != 0) { |
---|
2439 | if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); |
---|
2440 | dpaa_fd_release(net_dev, fd); |
---|
2441 | return; |
---|
2442 | } |
---|
2443 | |
---|
2444 | dpaa_bp = dpaa_bpid2pool(fd->bpid); |
---|
2445 | fd_format = qm_fd_get_format(fd); |
---|
2446 | |
---|
2447 | if (likely(fd_format == qm_fd_contig)) { |
---|
2448 | m = contig_fd_to_mbuf(fd, ifp); |
---|
2449 | } else { |
---|
2450 | BSD_ASSERT(fd_format == qm_fd_sg); |
---|
2451 | m = sg_fd_to_mbuf(dpaa_bp, fd, ifp, count_ptr); |
---|
2452 | } |
---|
2453 | |
---|
2454 | if ((be32_to_cpu(fd->status) & FM_FD_STAT_L4CV) != 0) { |
---|
2455 | m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID | |
---|
2456 | CSUM_DATA_VALID | CSUM_PSEUDO_HDR; |
---|
2457 | m->m_pkthdr.csum_data = 0xffff; |
---|
2458 | } |
---|
2459 | |
---|
2460 | /* Account for either the contig buffer or the SGT buffer (depending on |
---|
2461 | * which case we were in) having been removed from the pool. |
---|
2462 | */ |
---|
2463 | (*count_ptr)--; |
---|
2464 | |
---|
2465 | if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); |
---|
2466 | (*ifp->if_input)(ifp, m); |
---|
2467 | } |
---|
2468 | #endif /* __rtems__ */ |
---|
2469 | static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal, |
---|
2470 | struct qman_fq *fq, |
---|
2471 | const struct qm_dqrr_entry *dq) |
---|
2472 | { |
---|
2473 | #ifndef __rtems__ |
---|
2474 | struct rtnl_link_stats64 *percpu_stats; |
---|
2475 | #endif /* __rtems__ */ |
---|
2476 | struct dpaa_percpu_priv *percpu_priv; |
---|
2477 | #ifndef __rtems__ |
---|
2478 | const struct qm_fd *fd = &dq->fd; |
---|
2479 | dma_addr_t addr = qm_fd_addr(fd); |
---|
2480 | enum qm_fd_format fd_format; |
---|
2481 | #endif /* __rtems__ */ |
---|
2482 | struct net_device *net_dev; |
---|
2483 | #ifndef __rtems__ |
---|
2484 | u32 fd_status; |
---|
2485 | #endif /* __rtems__ */ |
---|
2486 | struct dpaa_bp *dpaa_bp; |
---|
2487 | struct dpaa_priv *priv; |
---|
2488 | #ifndef __rtems__ |
---|
2489 | unsigned int skb_len; |
---|
2490 | struct sk_buff *skb; |
---|
2491 | #endif /* __rtems__ */ |
---|
2492 | int *count_ptr; |
---|
2493 | |
---|
2494 | #ifndef __rtems__ |
---|
2495 | fd_status = be32_to_cpu(fd->status); |
---|
2496 | fd_format = qm_fd_get_format(fd); |
---|
2497 | #endif /* __rtems__ */ |
---|
2498 | net_dev = ((struct dpaa_fq *)fq)->net_dev; |
---|
2499 | priv = netdev_priv(net_dev); |
---|
2500 | dpaa_bp = dpaa_bpid2pool(dq->fd.bpid); |
---|
2501 | if (!dpaa_bp) |
---|
2502 | return qman_cb_dqrr_consume; |
---|
2503 | |
---|
2504 | #ifndef __rtems__ |
---|
2505 | /* Trace the Rx fd */ |
---|
2506 | trace_dpaa_rx_fd(net_dev, fq, &dq->fd); |
---|
2507 | #endif /* __rtems__ */ |
---|
2508 | |
---|
2509 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2510 | #ifndef __rtems__ |
---|
2511 | percpu_stats = &percpu_priv->stats; |
---|
2512 | #endif /* __rtems__ */ |
---|
2513 | |
---|
2514 | if (unlikely(dpaa_eth_napi_schedule(percpu_priv, portal))) |
---|
2515 | return qman_cb_dqrr_stop; |
---|
2516 | |
---|
2517 | /* Make sure we didn't run out of buffers */ |
---|
2518 | if (unlikely(dpaa_eth_refill_bpools(priv))) { |
---|
2519 | #ifdef __rtems__ |
---|
2520 | struct ifnet *ifp = net_dev->ifp; |
---|
2521 | if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); |
---|
2522 | #endif /* __rtems__ */ |
---|
2523 | dpaa_fd_release(net_dev, &dq->fd); |
---|
2524 | return qman_cb_dqrr_consume; |
---|
2525 | } |
---|
2526 | |
---|
2527 | #ifndef __rtems__ |
---|
2528 | if (unlikely(fd_status & FM_FD_STAT_RX_ERRORS) != 0) { |
---|
2529 | if (net_ratelimit()) |
---|
2530 | netif_warn(priv, hw, net_dev, "FD status = 0x%08x\n", |
---|
2531 | fd_status & FM_FD_STAT_RX_ERRORS); |
---|
2532 | |
---|
2533 | percpu_stats->rx_errors++; |
---|
2534 | dpaa_fd_release(net_dev, fd); |
---|
2535 | return qman_cb_dqrr_consume; |
---|
2536 | } |
---|
2537 | |
---|
2538 | dpaa_bp = dpaa_bpid2pool(fd->bpid); |
---|
2539 | if (!dpaa_bp) |
---|
2540 | return qman_cb_dqrr_consume; |
---|
2541 | |
---|
2542 | dma_unmap_single(dpaa_bp->dev, addr, dpaa_bp->size, DMA_FROM_DEVICE); |
---|
2543 | |
---|
2544 | /* prefetch the first 64 bytes of the frame or the SGT start */ |
---|
2545 | prefetch(phys_to_virt(addr) + qm_fd_get_offset(fd)); |
---|
2546 | |
---|
2547 | fd_format = qm_fd_get_format(fd); |
---|
2548 | /* The only FD types that we may receive are contig and S/G */ |
---|
2549 | WARN_ON((fd_format != qm_fd_contig) && (fd_format != qm_fd_sg)); |
---|
2550 | |
---|
2551 | /* Account for either the contig buffer or the SGT buffer (depending on |
---|
2552 | * which case we were in) having been removed from the pool. |
---|
2553 | */ |
---|
2554 | count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
2555 | (*count_ptr)--; |
---|
2556 | |
---|
2557 | if (likely(fd_format == qm_fd_contig)) |
---|
2558 | skb = contig_fd_to_skb(priv, fd); |
---|
2559 | dpa_fd_release(net_dev, &dq->fd); |
---|
2560 | else |
---|
2561 | skb = sg_fd_to_skb(priv, fd); |
---|
2562 | if (!skb) |
---|
2563 | return qman_cb_dqrr_consume; |
---|
2564 | |
---|
2565 | skb->protocol = eth_type_trans(skb, net_dev); |
---|
2566 | |
---|
2567 | skb_len = skb->len; |
---|
2568 | |
---|
2569 | if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) |
---|
2570 | return qman_cb_dqrr_consume; |
---|
2571 | |
---|
2572 | percpu_stats->rx_packets++; |
---|
2573 | percpu_stats->rx_bytes += skb_len; |
---|
2574 | #else /* __rtems__ */ |
---|
2575 | count_ptr = this_cpu_ptr(dpaa_bp->percpu_count); |
---|
2576 | dpaa_rx(net_dev, portal, priv, percpu_priv, &dq->fd, fq->fqid, |
---|
2577 | count_ptr); |
---|
2578 | #endif /* __rtems__ */ |
---|
2579 | |
---|
2580 | return qman_cb_dqrr_consume; |
---|
2581 | } |
---|
2582 | |
---|
2583 | static enum qman_cb_dqrr_result conf_error_dqrr(struct qman_portal *portal, |
---|
2584 | struct qman_fq *fq, |
---|
2585 | const struct qm_dqrr_entry *dq) |
---|
2586 | { |
---|
2587 | struct dpaa_percpu_priv *percpu_priv; |
---|
2588 | struct net_device *net_dev; |
---|
2589 | struct dpaa_priv *priv; |
---|
2590 | |
---|
2591 | net_dev = ((struct dpaa_fq *)fq)->net_dev; |
---|
2592 | priv = netdev_priv(net_dev); |
---|
2593 | |
---|
2594 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2595 | |
---|
2596 | if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
---|
2597 | return qman_cb_dqrr_stop; |
---|
2598 | |
---|
2599 | dpaa_tx_error(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
---|
2600 | |
---|
2601 | return qman_cb_dqrr_consume; |
---|
2602 | } |
---|
2603 | |
---|
2604 | static enum qman_cb_dqrr_result conf_dflt_dqrr(struct qman_portal *portal, |
---|
2605 | struct qman_fq *fq, |
---|
2606 | const struct qm_dqrr_entry *dq) |
---|
2607 | { |
---|
2608 | struct dpaa_percpu_priv *percpu_priv; |
---|
2609 | struct net_device *net_dev; |
---|
2610 | struct dpaa_priv *priv; |
---|
2611 | |
---|
2612 | net_dev = ((struct dpaa_fq *)fq)->net_dev; |
---|
2613 | priv = netdev_priv(net_dev); |
---|
2614 | |
---|
2615 | #ifndef __rtems__ |
---|
2616 | /* Trace the fd */ |
---|
2617 | trace_dpaa_tx_conf_fd(net_dev, fq, &dq->fd); |
---|
2618 | #endif /* __rtems__ */ |
---|
2619 | |
---|
2620 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2621 | |
---|
2622 | if (dpaa_eth_napi_schedule(percpu_priv, portal)) |
---|
2623 | return qman_cb_dqrr_stop; |
---|
2624 | |
---|
2625 | dpaa_tx_conf(net_dev, priv, percpu_priv, &dq->fd, fq->fqid); |
---|
2626 | |
---|
2627 | return qman_cb_dqrr_consume; |
---|
2628 | } |
---|
2629 | |
---|
2630 | static void egress_ern(struct qman_portal *portal, |
---|
2631 | struct qman_fq *fq, |
---|
2632 | const union qm_mr_entry *msg) |
---|
2633 | { |
---|
2634 | const struct qm_fd *fd = &msg->ern.fd; |
---|
2635 | struct dpaa_percpu_priv *percpu_priv; |
---|
2636 | const struct dpaa_priv *priv; |
---|
2637 | struct net_device *net_dev; |
---|
2638 | #ifndef __rtems__ |
---|
2639 | struct sk_buff *skb; |
---|
2640 | #else /* __rtems__ */ |
---|
2641 | struct ifnet *ifp; |
---|
2642 | #endif /* __rtems__ */ |
---|
2643 | |
---|
2644 | net_dev = ((struct dpaa_fq *)fq)->net_dev; |
---|
2645 | priv = netdev_priv(net_dev); |
---|
2646 | percpu_priv = this_cpu_ptr(priv->percpu_priv); |
---|
2647 | |
---|
2648 | #ifndef __rtems__ |
---|
2649 | percpu_priv->stats.tx_dropped++; |
---|
2650 | percpu_priv->stats.tx_fifo_errors++; |
---|
2651 | #else /* __rtems__ */ |
---|
2652 | ifp = net_dev->ifp; |
---|
2653 | if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); |
---|
2654 | #endif /* __rtems__ */ |
---|
2655 | count_ern(percpu_priv, msg); |
---|
2656 | |
---|
2657 | #ifndef __rtems__ |
---|
2658 | skb = dpaa_cleanup_tx_fd(priv, fd); |
---|
2659 | dev_kfree_skb_any(skb); |
---|
2660 | #else /* __rtems__ */ |
---|
2661 | dpaa_cleanup_tx_fd(ifp, fd); |
---|
2662 | #endif /* __rtems__ */ |
---|
2663 | } |
---|
2664 | |
---|
2665 | static const struct dpaa_fq_cbs dpaa_fq_cbs = { |
---|
2666 | .rx_defq = { .cb = { .dqrr = rx_default_dqrr } }, |
---|
2667 | .tx_defq = { .cb = { .dqrr = conf_dflt_dqrr } }, |
---|
2668 | .rx_errq = { .cb = { .dqrr = rx_error_dqrr } }, |
---|
2669 | .tx_errq = { .cb = { .dqrr = conf_error_dqrr } }, |
---|
2670 | .egress_ern = { .cb = { .ern = egress_ern } } |
---|
2671 | }; |
---|
2672 | |
---|
2673 | static void dpaa_eth_napi_enable(struct dpaa_priv *priv) |
---|
2674 | { |
---|
2675 | #ifndef __rtems__ |
---|
2676 | struct dpaa_percpu_priv *percpu_priv; |
---|
2677 | int i; |
---|
2678 | |
---|
2679 | for_each_possible_cpu(i) { |
---|
2680 | percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
---|
2681 | |
---|
2682 | percpu_priv->np.down = 0; |
---|
2683 | napi_enable(&percpu_priv->np.napi); |
---|
2684 | } |
---|
2685 | #endif /* __rtems__ */ |
---|
2686 | } |
---|
2687 | |
---|
2688 | static void dpaa_eth_napi_disable(struct dpaa_priv *priv) |
---|
2689 | { |
---|
2690 | #ifndef __rtems__ |
---|
2691 | struct dpaa_percpu_priv *percpu_priv; |
---|
2692 | int i; |
---|
2693 | |
---|
2694 | for_each_possible_cpu(i) { |
---|
2695 | percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
---|
2696 | |
---|
2697 | percpu_priv->np.down = 1; |
---|
2698 | napi_disable(&percpu_priv->np.napi); |
---|
2699 | } |
---|
2700 | #endif /* __rtems__ */ |
---|
2701 | } |
---|
2702 | |
---|
2703 | #ifndef __rtems__ |
---|
2704 | static int dpaa_open(struct net_device *net_dev) |
---|
2705 | #else /* __rtems__ */ |
---|
2706 | int dpa_eth_priv_start(struct net_device *net_dev) |
---|
2707 | #endif /* __rtems__ */ |
---|
2708 | { |
---|
2709 | struct mac_device *mac_dev; |
---|
2710 | struct dpaa_priv *priv; |
---|
2711 | int err, i; |
---|
2712 | |
---|
2713 | priv = netdev_priv(net_dev); |
---|
2714 | mac_dev = priv->mac_dev; |
---|
2715 | dpaa_eth_napi_enable(priv); |
---|
2716 | |
---|
2717 | #ifndef __rtems__ |
---|
2718 | net_dev->phydev = mac_dev->init_phy(net_dev, priv->mac_dev); |
---|
2719 | if (!net_dev->phydev) { |
---|
2720 | netif_err(priv, ifup, net_dev, "init_phy() failed\n"); |
---|
2721 | err = -ENODEV; |
---|
2722 | goto phy_init_failed; |
---|
2723 | } |
---|
2724 | #endif /* __rtems__ */ |
---|
2725 | |
---|
2726 | for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { |
---|
2727 | err = fman_port_enable(mac_dev->port[i]); |
---|
2728 | if (err) |
---|
2729 | goto mac_start_failed; |
---|
2730 | } |
---|
2731 | |
---|
2732 | err = priv->mac_dev->start(mac_dev); |
---|
2733 | if (err < 0) { |
---|
2734 | netif_err(priv, ifup, net_dev, "mac_dev->start() = %d\n", err); |
---|
2735 | goto mac_start_failed; |
---|
2736 | } |
---|
2737 | |
---|
2738 | #ifndef __rtems__ |
---|
2739 | netif_tx_start_all_queues(net_dev); |
---|
2740 | #endif /* __rtems__ */ |
---|
2741 | |
---|
2742 | return 0; |
---|
2743 | |
---|
2744 | mac_start_failed: |
---|
2745 | for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) |
---|
2746 | fman_port_disable(mac_dev->port[i]); |
---|
2747 | |
---|
2748 | #ifndef __rtems__ |
---|
2749 | phy_init_failed: |
---|
2750 | #endif /* __rtems__ */ |
---|
2751 | dpaa_eth_napi_disable(priv); |
---|
2752 | |
---|
2753 | return err; |
---|
2754 | } |
---|
2755 | |
---|
2756 | #ifndef __rtems__ |
---|
2757 | static int dpaa_eth_stop(struct net_device *net_dev) |
---|
2758 | #else /* __rtems__ */ |
---|
2759 | int dpa_eth_priv_stop(struct net_device *net_dev) |
---|
2760 | #endif /* __rtems__ */ |
---|
2761 | { |
---|
2762 | struct dpaa_priv *priv; |
---|
2763 | int err; |
---|
2764 | |
---|
2765 | err = dpaa_stop(net_dev); |
---|
2766 | |
---|
2767 | priv = netdev_priv(net_dev); |
---|
2768 | dpaa_eth_napi_disable(priv); |
---|
2769 | |
---|
2770 | return err; |
---|
2771 | } |
---|
2772 | |
---|
2773 | #ifndef __rtems__ |
---|
2774 | static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd) |
---|
2775 | { |
---|
2776 | if (!net_dev->phydev) |
---|
2777 | return -EINVAL; |
---|
2778 | return phy_mii_ioctl(net_dev->phydev, rq, cmd); |
---|
2779 | } |
---|
2780 | |
---|
2781 | static const struct net_device_ops dpaa_ops = { |
---|
2782 | .ndo_open = dpaa_open, |
---|
2783 | .ndo_start_xmit = dpaa_start_xmit, |
---|
2784 | .ndo_stop = dpaa_eth_stop, |
---|
2785 | .ndo_tx_timeout = dpaa_tx_timeout, |
---|
2786 | .ndo_get_stats64 = dpaa_get_stats64, |
---|
2787 | .ndo_set_mac_address = dpaa_set_mac_address, |
---|
2788 | .ndo_validate_addr = eth_validate_addr, |
---|
2789 | .ndo_set_rx_mode = dpaa_set_rx_mode, |
---|
2790 | .ndo_do_ioctl = dpaa_ioctl, |
---|
2791 | .ndo_setup_tc = dpaa_setup_tc, |
---|
2792 | }; |
---|
2793 | |
---|
2794 | static int dpaa_napi_add(struct net_device *net_dev) |
---|
2795 | { |
---|
2796 | struct dpaa_priv *priv = netdev_priv(net_dev); |
---|
2797 | struct dpaa_percpu_priv *percpu_priv; |
---|
2798 | int cpu; |
---|
2799 | |
---|
2800 | for_each_possible_cpu(cpu) { |
---|
2801 | percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); |
---|
2802 | |
---|
2803 | netif_napi_add(net_dev, &percpu_priv->np.napi, |
---|
2804 | dpaa_eth_poll, NAPI_POLL_WEIGHT); |
---|
2805 | } |
---|
2806 | |
---|
2807 | return 0; |
---|
2808 | } |
---|
2809 | #endif /* __rtems__ */ |
---|
2810 | |
---|
2811 | static void dpaa_napi_del(struct net_device *net_dev) |
---|
2812 | { |
---|
2813 | #ifndef __rtems__ |
---|
2814 | struct dpaa_priv *priv = netdev_priv(net_dev); |
---|
2815 | struct dpaa_percpu_priv *percpu_priv; |
---|
2816 | int cpu; |
---|
2817 | |
---|
2818 | for_each_possible_cpu(cpu) { |
---|
2819 | percpu_priv = per_cpu_ptr(priv->percpu_priv, cpu); |
---|
2820 | |
---|
2821 | netif_napi_del(&percpu_priv->np.napi); |
---|
2822 | } |
---|
2823 | #endif /* __rtems__ */ |
---|
2824 | } |
---|
2825 | |
---|
2826 | static inline void dpaa_bp_free_pf(const struct dpaa_bp *bp, |
---|
2827 | struct bm_buffer *bmb) |
---|
2828 | { |
---|
2829 | dma_addr_t addr = bm_buf_addr(bmb); |
---|
2830 | |
---|
2831 | #ifndef __rtems__ |
---|
2832 | dma_unmap_single(bp->dev, addr, bp->size, DMA_FROM_DEVICE); |
---|
2833 | |
---|
2834 | skb_free_frag(phys_to_virt(addr)); |
---|
2835 | #else /* __rtems__ */ |
---|
2836 | BSD_ASSERT(0); |
---|
2837 | m_freem(dpaa_bp_addr_to_mbuf(addr)); |
---|
2838 | #endif /* __rtems__ */ |
---|
2839 | } |
---|
2840 | |
---|
2841 | /* Alloc the dpaa_bp struct and configure default values */ |
---|
2842 | static struct dpaa_bp *dpaa_bp_alloc(struct device *dev) |
---|
2843 | { |
---|
2844 | struct dpaa_bp *dpaa_bp; |
---|
2845 | |
---|
2846 | dpaa_bp = devm_kzalloc(dev, sizeof(*dpaa_bp), GFP_KERNEL); |
---|
2847 | if (!dpaa_bp) |
---|
2848 | return ERR_PTR(-ENOMEM); |
---|
2849 | |
---|
2850 | dpaa_bp->bpid = FSL_DPAA_BPID_INV; |
---|
2851 | dpaa_bp->percpu_count = devm_alloc_percpu(dev, *dpaa_bp->percpu_count); |
---|
2852 | dpaa_bp->config_count = FSL_DPAA_ETH_MAX_BUF_COUNT; |
---|
2853 | |
---|
2854 | dpaa_bp->seed_cb = dpaa_bp_seed; |
---|
2855 | dpaa_bp->free_buf_cb = dpaa_bp_free_pf; |
---|
2856 | |
---|
2857 | return dpaa_bp; |
---|
2858 | } |
---|
2859 | |
---|
2860 | /* Place all ingress FQs (Rx Default, Rx Error) in a dedicated CGR. |
---|
2861 | * We won't be sending congestion notifications to FMan; for now, we just use |
---|
2862 | * this CGR to generate enqueue rejections to FMan in order to drop the frames |
---|
2863 | * before they reach our ingress queues and eat up memory. |
---|
2864 | */ |
---|
2865 | static int dpaa_ingress_cgr_init(struct dpaa_priv *priv) |
---|
2866 | { |
---|
2867 | struct qm_mcc_initcgr initcgr; |
---|
2868 | u32 cs_th; |
---|
2869 | int err; |
---|
2870 | |
---|
2871 | err = qman_alloc_cgrid(&priv->ingress_cgr.cgrid); |
---|
2872 | if (err < 0) { |
---|
2873 | if (netif_msg_drv(priv)) |
---|
2874 | pr_err("Error %d allocating CGR ID\n", err); |
---|
2875 | goto out_error; |
---|
2876 | } |
---|
2877 | |
---|
2878 | /* Enable CS TD, but disable Congestion State Change Notifications. */ |
---|
2879 | memset(&initcgr, 0, sizeof(initcgr)); |
---|
2880 | initcgr.we_mask = cpu_to_be16(QM_CGR_WE_CS_THRES); |
---|
2881 | initcgr.cgr.cscn_en = QM_CGR_EN; |
---|
2882 | cs_th = DPAA_INGRESS_CS_THRESHOLD; |
---|
2883 | qm_cgr_cs_thres_set64(&initcgr.cgr.cs_thres, cs_th, 1); |
---|
2884 | |
---|
2885 | initcgr.we_mask |= cpu_to_be16(QM_CGR_WE_CSTD_EN); |
---|
2886 | initcgr.cgr.cstd_en = QM_CGR_EN; |
---|
2887 | |
---|
2888 | /* This CGR will be associated with the SWP affined to the current CPU. |
---|
2889 | * However, we'll place all our ingress FQs in it. |
---|
2890 | */ |
---|
2891 | err = qman_create_cgr(&priv->ingress_cgr, QMAN_CGR_FLAG_USE_INIT, |
---|
2892 | &initcgr); |
---|
2893 | if (err < 0) { |
---|
2894 | if (netif_msg_drv(priv)) |
---|
2895 | pr_err("Error %d creating ingress CGR with ID %d\n", |
---|
2896 | err, priv->ingress_cgr.cgrid); |
---|
2897 | qman_release_cgrid(priv->ingress_cgr.cgrid); |
---|
2898 | goto out_error; |
---|
2899 | } |
---|
2900 | if (netif_msg_drv(priv)) |
---|
2901 | pr_debug("Created ingress CGR %d for netdev with hwaddr %pM\n", |
---|
2902 | priv->ingress_cgr.cgrid, priv->mac_dev->addr); |
---|
2903 | |
---|
2904 | priv->use_ingress_cgr = true; |
---|
2905 | |
---|
2906 | out_error: |
---|
2907 | return err; |
---|
2908 | } |
---|
2909 | |
---|
2910 | #ifndef __rtems__ |
---|
2911 | static const struct of_device_id dpaa_match[]; |
---|
2912 | #endif /* __rtems__ */ |
---|
2913 | |
---|
2914 | static inline u16 dpaa_get_headroom(struct dpaa_buffer_layout *bl) |
---|
2915 | { |
---|
2916 | u16 headroom; |
---|
2917 | |
---|
2918 | /* The frame headroom must accommodate: |
---|
2919 | * - the driver private data area |
---|
2920 | * - parse results, hash results, timestamp if selected |
---|
2921 | * If either hash results or time stamp are selected, both will |
---|
2922 | * be copied to/from the frame headroom, as TS is located between PR and |
---|
2923 | * HR in the IC and IC copy size has a granularity of 16bytes |
---|
2924 | * (see description of FMBM_RICP and FMBM_TICP registers in DPAARM) |
---|
2925 | * |
---|
2926 | * Also make sure the headroom is a multiple of data_align bytes |
---|
2927 | */ |
---|
2928 | headroom = (u16)(bl->priv_data_size + DPAA_PARSE_RESULTS_SIZE + |
---|
2929 | DPAA_TIME_STAMP_SIZE + DPAA_HASH_RESULTS_SIZE); |
---|
2930 | |
---|
2931 | return DPAA_FD_DATA_ALIGNMENT ? ALIGN(headroom, |
---|
2932 | DPAA_FD_DATA_ALIGNMENT) : |
---|
2933 | headroom; |
---|
2934 | } |
---|
2935 | |
---|
2936 | #ifndef __rtems__ |
---|
2937 | static int dpaa_eth_probe(struct platform_device *pdev) |
---|
2938 | #else /* __rtems__ */ |
---|
2939 | int |
---|
2940 | dpaa_eth_priv_probe(struct platform_device *pdev, struct mac_device *mac_dev) |
---|
2941 | #endif /* __rtems__ */ |
---|
2942 | { |
---|
2943 | struct dpaa_bp *dpaa_bps[DPAA_BPS_NUM] = {NULL}; |
---|
2944 | struct dpaa_percpu_priv *percpu_priv; |
---|
2945 | struct net_device *net_dev = NULL; |
---|
2946 | struct dpaa_fq *dpaa_fq, *tmp; |
---|
2947 | struct dpaa_priv *priv = NULL; |
---|
2948 | struct fm_port_fqs port_fqs; |
---|
2949 | #ifndef __rtems__ |
---|
2950 | struct mac_device *mac_dev; |
---|
2951 | #endif /* __rtems__ */ |
---|
2952 | int err = 0, i, channel; |
---|
2953 | struct device *dev; |
---|
2954 | |
---|
2955 | dev = &pdev->dev; |
---|
2956 | |
---|
2957 | #ifndef __rtems__ |
---|
2958 | /* Allocate this early, so we can store relevant information in |
---|
2959 | * the private area |
---|
2960 | */ |
---|
2961 | net_dev = alloc_etherdev_mq(sizeof(*priv), DPAA_ETH_TXQ_NUM); |
---|
2962 | if (!net_dev) { |
---|
2963 | dev_err(dev, "alloc_etherdev_mq() failed\n"); |
---|
2964 | goto alloc_etherdev_mq_failed; |
---|
2965 | } |
---|
2966 | #else /* __rtems__ */ |
---|
2967 | net_dev = &mac_dev->net_dev; |
---|
2968 | net_dev->priv = malloc(sizeof(*priv), M_KMALLOC, M_WAITOK | M_ZERO); |
---|
2969 | #endif /* __rtems__ */ |
---|
2970 | |
---|
2971 | /* Do this here, so we can be verbose early */ |
---|
2972 | #ifndef __rtems__ |
---|
2973 | SET_NETDEV_DEV(net_dev, dev); |
---|
2974 | #endif /* __rtems__ */ |
---|
2975 | dev_set_drvdata(dev, net_dev); |
---|
2976 | |
---|
2977 | priv = netdev_priv(net_dev); |
---|
2978 | priv->net_dev = net_dev; |
---|
2979 | |
---|
2980 | #ifndef __rtems__ |
---|
2981 | priv->msg_enable = netif_msg_init(debug, DPAA_MSG_DEFAULT); |
---|
2982 | |
---|
2983 | mac_dev = dpaa_mac_dev_get(pdev); |
---|
2984 | if (IS_ERR(mac_dev)) { |
---|
2985 | dev_err(dev, "dpaa_mac_dev_get() failed\n"); |
---|
2986 | err = PTR_ERR(mac_dev); |
---|
2987 | goto mac_probe_failed; |
---|
2988 | } |
---|
2989 | |
---|
2990 | /* If fsl_fm_max_frm is set to a higher value than the all-common 1500, |
---|
2991 | * we choose conservatively and let the user explicitly set a higher |
---|
2992 | * MTU via ifconfig. Otherwise, the user may end up with different MTUs |
---|
2993 | * in the same LAN. |
---|
2994 | * If on the other hand fsl_fm_max_frm has been chosen below 1500, |
---|
2995 | * start with the maximum allowed. |
---|
2996 | */ |
---|
2997 | net_dev->mtu = min(dpaa_get_max_mtu(), ETH_DATA_LEN); |
---|
2998 | |
---|
2999 | netdev_dbg(net_dev, "Setting initial MTU on net device: %d\n", |
---|
3000 | net_dev->mtu); |
---|
3001 | #endif /* __rtems__ */ |
---|
3002 | |
---|
3003 | priv->buf_layout[RX].priv_data_size = DPAA_RX_PRIV_DATA_SIZE; /* Rx */ |
---|
3004 | priv->buf_layout[TX].priv_data_size = DPAA_TX_PRIV_DATA_SIZE; /* Tx */ |
---|
3005 | |
---|
3006 | #ifndef __rtems__ |
---|
3007 | /* device used for DMA mapping */ |
---|
3008 | arch_setup_dma_ops(dev, 0, 0, NULL, false); |
---|
3009 | err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(40)); |
---|
3010 | if (err) { |
---|
3011 | dev_err(dev, "dma_coerce_mask_and_coherent() failed\n"); |
---|
3012 | goto dev_mask_failed; |
---|
3013 | } |
---|
3014 | #endif /* __rtems__ */ |
---|
3015 | |
---|
3016 | /* bp init */ |
---|
3017 | for (i = 0; i < DPAA_BPS_NUM; i++) { |
---|
3018 | int err; |
---|
3019 | |
---|
3020 | dpaa_bps[i] = dpaa_bp_alloc(dev); |
---|
3021 | if (IS_ERR(dpaa_bps[i])) |
---|
3022 | return PTR_ERR(dpaa_bps[i]); |
---|
3023 | /* the raw size of the buffers used for reception */ |
---|
3024 | dpaa_bps[i]->raw_size = bpool_buffer_raw_size(i, DPAA_BPS_NUM); |
---|
3025 | /* avoid runtime computations by keeping the usable size here */ |
---|
3026 | dpaa_bps[i]->size = dpaa_bp_size(dpaa_bps[i]->raw_size); |
---|
3027 | dpaa_bps[i]->dev = dev; |
---|
3028 | |
---|
3029 | err = dpaa_bp_alloc_pool(dpaa_bps[i]); |
---|
3030 | if (err < 0) { |
---|
3031 | dpaa_bps_free(priv); |
---|
3032 | priv->dpaa_bps[i] = NULL; |
---|
3033 | goto bp_create_failed; |
---|
3034 | } |
---|
3035 | priv->dpaa_bps[i] = dpaa_bps[i]; |
---|
3036 | } |
---|
3037 | |
---|
3038 | INIT_LIST_HEAD(&priv->dpaa_fq_list); |
---|
3039 | |
---|
3040 | memset(&port_fqs, 0, sizeof(port_fqs)); |
---|
3041 | |
---|
3042 | err = dpaa_alloc_all_fqs(dev, &priv->dpaa_fq_list, &port_fqs); |
---|
3043 | if (err < 0) { |
---|
3044 | dev_err(dev, "dpaa_alloc_all_fqs() failed\n"); |
---|
3045 | goto fq_probe_failed; |
---|
3046 | } |
---|
3047 | |
---|
3048 | priv->mac_dev = mac_dev; |
---|
3049 | |
---|
3050 | channel = dpaa_get_channel(); |
---|
3051 | if (channel < 0) { |
---|
3052 | dev_err(dev, "dpaa_get_channel() failed\n"); |
---|
3053 | err = channel; |
---|
3054 | goto get_channel_failed; |
---|
3055 | } |
---|
3056 | |
---|
3057 | priv->channel = (u16)channel; |
---|
3058 | |
---|
3059 | /* Start a thread that will walk the CPUs with affine portals |
---|
3060 | * and add this pool channel to each's dequeue mask. |
---|
3061 | */ |
---|
3062 | dpaa_eth_add_channel(priv->channel); |
---|
3063 | |
---|
3064 | dpaa_fq_setup(priv, &dpaa_fq_cbs, priv->mac_dev->port[TX]); |
---|
3065 | |
---|
3066 | /* Create a congestion group for this netdev, with |
---|
3067 | * dynamically-allocated CGR ID. |
---|
3068 | * Must be executed after probing the MAC, but before |
---|
3069 | * assigning the egress FQs to the CGRs. |
---|
3070 | */ |
---|
3071 | err = dpaa_eth_cgr_init(priv); |
---|
3072 | if (err < 0) { |
---|
3073 | dev_err(dev, "Error initializing CGR\n"); |
---|
3074 | goto tx_cgr_init_failed; |
---|
3075 | } |
---|
3076 | |
---|
3077 | err = dpaa_ingress_cgr_init(priv); |
---|
3078 | if (err < 0) { |
---|
3079 | dev_err(dev, "Error initializing ingress CGR\n"); |
---|
3080 | goto rx_cgr_init_failed; |
---|
3081 | } |
---|
3082 | |
---|
3083 | /* Add the FQs to the interface, and make them active */ |
---|
3084 | list_for_each_entry_safe(dpaa_fq, tmp, &priv->dpaa_fq_list, list) { |
---|
3085 | err = dpaa_fq_init(dpaa_fq, false); |
---|
3086 | if (err < 0) |
---|
3087 | goto fq_alloc_failed; |
---|
3088 | } |
---|
3089 | |
---|
3090 | priv->tx_headroom = dpaa_get_headroom(&priv->buf_layout[TX]); |
---|
3091 | priv->rx_headroom = dpaa_get_headroom(&priv->buf_layout[RX]); |
---|
3092 | |
---|
3093 | /* All real interfaces need their ports initialized */ |
---|
3094 | err = dpaa_eth_init_ports(mac_dev, dpaa_bps, DPAA_BPS_NUM, &port_fqs, |
---|
3095 | &priv->buf_layout[0], dev); |
---|
3096 | if (err) |
---|
3097 | goto init_ports_failed; |
---|
3098 | |
---|
3099 | priv->percpu_priv = devm_alloc_percpu(dev, *priv->percpu_priv); |
---|
3100 | if (!priv->percpu_priv) { |
---|
3101 | dev_err(dev, "devm_alloc_percpu() failed\n"); |
---|
3102 | err = -ENOMEM; |
---|
3103 | goto alloc_percpu_failed; |
---|
3104 | } |
---|
3105 | #ifndef __rtems__ |
---|
3106 | for_each_possible_cpu(i) { |
---|
3107 | #else /* __rtems__ */ |
---|
3108 | for (i = 0; i < (int)rtems_get_processor_count(); ++i) { |
---|
3109 | #endif /* __rtems__ */ |
---|
3110 | percpu_priv = per_cpu_ptr(priv->percpu_priv, i); |
---|
3111 | memset(percpu_priv, 0, sizeof(*percpu_priv)); |
---|
3112 | } |
---|
3113 | |
---|
3114 | #ifndef __rtems__ |
---|
3115 | priv->num_tc = 1; |
---|
3116 | netif_set_real_num_tx_queues(net_dev, priv->num_tc * DPAA_TC_TXQ_NUM); |
---|
3117 | |
---|
3118 | /* Initialize NAPI */ |
---|
3119 | err = dpaa_napi_add(net_dev); |
---|
3120 | if (err < 0) |
---|
3121 | goto napi_add_failed; |
---|
3122 | |
---|
3123 | err = dpaa_netdev_init(net_dev, &dpaa_ops, tx_timeout); |
---|
3124 | if (err < 0) |
---|
3125 | goto netdev_init_failed; |
---|
3126 | |
---|
3127 | dpaa_eth_sysfs_init(&net_dev->dev); |
---|
3128 | |
---|
3129 | netif_info(priv, probe, net_dev, "Probed interface %s\n", |
---|
3130 | net_dev->name); |
---|
3131 | #endif /* __rtems__ */ |
---|
3132 | |
---|
3133 | return 0; |
---|
3134 | |
---|
3135 | #ifndef __rtems__ |
---|
3136 | netdev_init_failed: |
---|
3137 | napi_add_failed: |
---|
3138 | #endif /* __rtems__ */ |
---|
3139 | dpaa_napi_del(net_dev); |
---|
3140 | alloc_percpu_failed: |
---|
3141 | init_ports_failed: |
---|
3142 | #ifndef __rtems__ |
---|
3143 | dpaa_fq_free(dev, &priv->dpaa_fq_list); |
---|
3144 | #endif /* __rtems__ */ |
---|
3145 | fq_alloc_failed: |
---|
3146 | #ifndef __rtems__ |
---|
3147 | qman_delete_cgr_safe(&priv->ingress_cgr); |
---|
3148 | qman_release_cgrid(priv->ingress_cgr.cgrid); |
---|
3149 | #endif /* __rtems__ */ |
---|
3150 | rx_cgr_init_failed: |
---|
3151 | #ifndef __rtems__ |
---|
3152 | qman_delete_cgr_safe(&priv->cgr_data.cgr); |
---|
3153 | qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
---|
3154 | #endif /* __rtems__ */ |
---|
3155 | tx_cgr_init_failed: |
---|
3156 | get_channel_failed: |
---|
3157 | dpaa_bps_free(priv); |
---|
3158 | bp_create_failed: |
---|
3159 | fq_probe_failed: |
---|
3160 | #ifndef __rtems__ |
---|
3161 | dev_mask_failed: |
---|
3162 | mac_probe_failed: |
---|
3163 | #endif /* __rtems__ */ |
---|
3164 | dev_set_drvdata(dev, NULL); |
---|
3165 | #ifndef __rtems__ |
---|
3166 | free_netdev(net_dev); |
---|
3167 | alloc_etherdev_mq_failed: |
---|
3168 | for (i = 0; i < DPAA_BPS_NUM && dpaa_bps[i]; i++) { |
---|
3169 | if (atomic_read(&dpaa_bps[i]->refs) == 0) |
---|
3170 | devm_kfree(dev, dpaa_bps[i]); |
---|
3171 | } |
---|
3172 | #else /* __rtems__ */ |
---|
3173 | BSD_ASSERT(0); |
---|
3174 | #endif /* __rtems__ */ |
---|
3175 | return err; |
---|
3176 | } |
---|
3177 | |
---|
3178 | #ifndef __rtems__ |
---|
3179 | static int dpaa_remove(struct platform_device *pdev) |
---|
3180 | { |
---|
3181 | struct net_device *net_dev; |
---|
3182 | struct dpaa_priv *priv; |
---|
3183 | struct device *dev; |
---|
3184 | int err; |
---|
3185 | |
---|
3186 | dev = &pdev->dev; |
---|
3187 | net_dev = dev_get_drvdata(dev); |
---|
3188 | |
---|
3189 | priv = netdev_priv(net_dev); |
---|
3190 | |
---|
3191 | dpaa_eth_sysfs_remove(dev); |
---|
3192 | |
---|
3193 | dev_set_drvdata(dev, NULL); |
---|
3194 | unregister_netdev(net_dev); |
---|
3195 | |
---|
3196 | err = dpaa_fq_free(dev, &priv->dpaa_fq_list); |
---|
3197 | |
---|
3198 | qman_delete_cgr_safe(&priv->ingress_cgr); |
---|
3199 | qman_release_cgrid(priv->ingress_cgr.cgrid); |
---|
3200 | qman_delete_cgr_safe(&priv->cgr_data.cgr); |
---|
3201 | qman_release_cgrid(priv->cgr_data.cgr.cgrid); |
---|
3202 | |
---|
3203 | dpaa_napi_del(net_dev); |
---|
3204 | |
---|
3205 | dpaa_bps_free(priv); |
---|
3206 | |
---|
3207 | free_netdev(net_dev); |
---|
3208 | |
---|
3209 | return err; |
---|
3210 | } |
---|
3211 | #endif /* __rtems__ */ |
---|
3212 | |
---|
3213 | #ifndef __rtems__ |
---|
3214 | static struct platform_device_id dpaa_devtype[] = { |
---|
3215 | { |
---|
3216 | .name = "dpaa-ethernet", |
---|
3217 | .driver_data = 0, |
---|
3218 | }, { |
---|
3219 | } |
---|
3220 | }; |
---|
3221 | MODULE_DEVICE_TABLE(platform, dpaa_devtype); |
---|
3222 | |
---|
3223 | static struct platform_driver dpaa_driver = { |
---|
3224 | .driver = { |
---|
3225 | .name = KBUILD_MODNAME, |
---|
3226 | }, |
---|
3227 | .id_table = dpaa_devtype, |
---|
3228 | .probe = dpaa_eth_probe, |
---|
3229 | .remove = dpaa_remove |
---|
3230 | }; |
---|
3231 | |
---|
3232 | static int __init dpaa_load(void) |
---|
3233 | { |
---|
3234 | int err; |
---|
3235 | |
---|
3236 | pr_debug("FSL DPAA Ethernet driver\n"); |
---|
3237 | |
---|
3238 | /* initialize dpaa_eth mirror values */ |
---|
3239 | dpaa_rx_extra_headroom = fman_get_rx_extra_headroom(); |
---|
3240 | dpaa_max_frm = fman_get_max_frm(); |
---|
3241 | |
---|
3242 | err = platform_driver_register(&dpaa_driver); |
---|
3243 | if (err < 0) |
---|
3244 | pr_err("Error, platform_driver_register() = %d\n", err); |
---|
3245 | |
---|
3246 | return err; |
---|
3247 | } |
---|
3248 | module_init(dpaa_load); |
---|
3249 | |
---|
3250 | static void __exit dpaa_unload(void) |
---|
3251 | { |
---|
3252 | platform_driver_unregister(&dpaa_driver); |
---|
3253 | |
---|
3254 | /* Only one channel is used and needs to be released after all |
---|
3255 | * interfaces are removed |
---|
3256 | */ |
---|
3257 | dpaa_release_channel(); |
---|
3258 | } |
---|
3259 | module_exit(dpaa_unload); |
---|
3260 | |
---|
3261 | MODULE_LICENSE("Dual BSD/GPL"); |
---|
3262 | MODULE_DESCRIPTION("FSL DPAA Ethernet driver"); |
---|
3263 | #endif /* __rtems__ */ |
---|