1 /* 2 * QEMU e1000(e) emulation - shared code 3 * 4 * Copyright (c) 2008 Qumranet 5 * 6 * Based on work done by: 7 * Nir Peleg, Tutis Systems Ltd. for Qumranet Inc. 8 * Copyright (c) 2007 Dan Aloni 9 * Copyright (c) 2004 Antony T Curtis 10 * 11 * This library is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU Lesser General Public 13 * License as published by the Free Software Foundation; either 14 * version 2 of the License, or (at your option) any later version. 15 * 16 * This library is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * Lesser General Public License for more details. 20 * 21 * You should have received a copy of the GNU Lesser General Public 22 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 23 */ 24 25 #include "e1000_regs.h" 26 27 #define defreg(x) x = (E1000_##x >> 2) 28 enum { 29 defreg(CTRL), defreg(EECD), defreg(EERD), defreg(GPRC), 30 defreg(GPTC), defreg(ICR), defreg(ICS), defreg(IMC), 31 defreg(IMS), defreg(LEDCTL), defreg(MANC), defreg(MDIC), 32 defreg(MPC), defreg(PBA), defreg(RCTL), defreg(RDBAH0), 33 defreg(RDBAL0), defreg(RDH0), defreg(RDLEN0), defreg(RDT0), 34 defreg(STATUS), defreg(SWSM), defreg(TCTL), defreg(TDBAH), 35 defreg(TDBAL), defreg(TDH), defreg(TDLEN), defreg(TDT), 36 defreg(TDLEN1), defreg(TDBAL1), defreg(TDBAH1), defreg(TDH1), 37 defreg(TDT1), defreg(TORH), defreg(TORL), defreg(TOTH), 38 defreg(TOTL), defreg(TPR), defreg(TPT), defreg(TXDCTL), 39 defreg(WUFC), defreg(RA), defreg(MTA), defreg(CRCERRS), 40 defreg(VFTA), defreg(VET), defreg(RDTR), defreg(RADV), 41 defreg(TADV), defreg(ITR), defreg(SCC), defreg(ECOL), 42 defreg(MCC), defreg(LATECOL), defreg(COLC), defreg(DC), 43 defreg(TNCRS), defreg(SEQEC), defreg(CEXTERR), defreg(RLEC), 44 defreg(XONRXC), defreg(XONTXC), defreg(XOFFRXC), defreg(XOFFTXC), 45 defreg(FCRUC), defreg(AIT), defreg(TDFH), defreg(TDFT), 46 defreg(TDFHS), defreg(TDFTS), defreg(TDFPC), defreg(WUC), 47 defreg(WUS), defreg(POEMB), defreg(PBS), defreg(RDFH), 48 defreg(RDFT), defreg(RDFHS), defreg(RDFTS), defreg(RDFPC), 49 defreg(PBM), defreg(IPAV), defreg(IP4AT), defreg(IP6AT), 50 defreg(WUPM), defreg(FFLT), defreg(FFMT), defreg(FFVT), 51 defreg(TARC0), defreg(TARC1), defreg(IAM), defreg(EXTCNF_CTRL), 52 defreg(GCR), defreg(TIMINCA), defreg(EIAC), defreg(CTRL_EXT), 53 defreg(IVAR), defreg(MFUTP01), defreg(MFUTP23), defreg(MANC2H), 54 defreg(MFVAL), defreg(MDEF), defreg(FACTPS), defreg(FTFT), 55 defreg(RUC), defreg(ROC), defreg(RFC), defreg(RJC), 56 defreg(PRC64), defreg(PRC127), defreg(PRC255), defreg(PRC511), 57 defreg(PRC1023), defreg(PRC1522), defreg(PTC64), defreg(PTC127), 58 defreg(PTC255), defreg(PTC511), defreg(PTC1023), defreg(PTC1522), 59 defreg(GORCL), defreg(GORCH), defreg(GOTCL), defreg(GOTCH), 60 defreg(RNBC), defreg(BPRC), defreg(MPRC), defreg(RFCTL), 61 defreg(PSRCTL), defreg(MPTC), defreg(BPTC), defreg(TSCTFC), 62 defreg(IAC), defreg(MGTPRC), defreg(MGTPDC), defreg(MGTPTC), 63 defreg(TSCTC), defreg(RXCSUM), defreg(FUNCTAG), defreg(GSCL_1), 64 defreg(GSCL_2), defreg(GSCL_3), defreg(GSCL_4), defreg(GSCN_0), 65 defreg(GSCN_1), defreg(GSCN_2), defreg(GSCN_3), defreg(GCR2), 66 defreg(RAID), defreg(RSRPD), defreg(TIDV), defreg(EITR), 67 defreg(MRQC), defreg(RETA), defreg(RSSRK), defreg(RDBAH1), 68 defreg(RDBAL1), defreg(RDLEN1), defreg(RDH1), defreg(RDT1), 69 defreg(PBACLR), defreg(FCAL), defreg(FCAH), defreg(FCT), 70 defreg(FCRTH), defreg(FCRTL), defreg(FCTTV), defreg(FCRTV), 71 defreg(FLA), defreg(EEWR), defreg(FLOP), defreg(FLOL), 72 defreg(FLSWCTL), defreg(FLSWCNT), defreg(RXDCTL), defreg(RXDCTL1), 73 defreg(MAVTV0), defreg(MAVTV1), defreg(MAVTV2), defreg(MAVTV3), 74 defreg(TXSTMPL), defreg(TXSTMPH), defreg(SYSTIML), defreg(SYSTIMH), 75 defreg(RXCFGL), defreg(RXUDP), defreg(TIMADJL), defreg(TIMADJH), 76 defreg(RXSTMPH), defreg(RXSTMPL), defreg(RXSATRL), defreg(RXSATRH), 77 defreg(FLASHT), defreg(TIPG), defreg(RDH), defreg(RDT), 78 defreg(RDLEN), defreg(RDBAH), defreg(RDBAL), 79 defreg(TXDCTL1), 80 defreg(FLSWDATA), 81 defreg(CTRL_DUP), 82 defreg(EXTCNF_SIZE), 83 defreg(EEMNGCTL), 84 defreg(EEMNGDATA), 85 defreg(FLMNGCTL), 86 defreg(FLMNGDATA), 87 defreg(FLMNGCNT), 88 defreg(TSYNCRXCTL), 89 defreg(TSYNCTXCTL), 90 91 /* Aliases */ 92 defreg(RDH0_A), defreg(RDT0_A), defreg(RDTR_A), defreg(RDFH_A), 93 defreg(RDFT_A), defreg(TDH_A), defreg(TDT_A), defreg(TIDV_A), 94 defreg(TDFH_A), defreg(TDFT_A), defreg(RA_A), defreg(RDBAL0_A), 95 defreg(TDBAL_A), defreg(TDLEN_A), defreg(VFTA_A), defreg(RDLEN0_A), 96 defreg(FCRTL_A), defreg(FCRTH_A) 97 }; 98 99 static inline void 100 e1000x_inc_reg_if_not_full(uint32_t *mac, int index) 101 { 102 if (mac[index] != 0xffffffff) { 103 mac[index]++; 104 } 105 } 106 107 static inline void 108 e1000x_grow_8reg_if_not_full(uint32_t *mac, int index, int size) 109 { 110 uint64_t sum = mac[index] | (uint64_t)mac[index + 1] << 32; 111 112 if (sum + size < sum) { 113 sum = ~0ULL; 114 } else { 115 sum += size; 116 } 117 mac[index] = sum; 118 mac[index + 1] = sum >> 32; 119 } 120 121 static inline int 122 e1000x_vlan_enabled(uint32_t *mac) 123 { 124 return ((mac[CTRL] & E1000_CTRL_VME) != 0); 125 } 126 127 static inline int 128 e1000x_is_vlan_txd(uint32_t txd_lower) 129 { 130 return ((txd_lower & E1000_TXD_CMD_VLE) != 0); 131 } 132 133 static inline int 134 e1000x_vlan_rx_filter_enabled(uint32_t *mac) 135 { 136 return ((mac[RCTL] & E1000_RCTL_VFE) != 0); 137 } 138 139 static inline int 140 e1000x_fcs_len(uint32_t *mac) 141 { 142 /* FCS aka Ethernet CRC-32. We don't get it from backends and can't 143 * fill it in, just pad descriptor length by 4 bytes unless guest 144 * told us to strip it off the packet. */ 145 return (mac[RCTL] & E1000_RCTL_SECRC) ? 0 : 4; 146 } 147 148 static inline void 149 e1000x_update_regs_on_link_down(uint32_t *mac, uint16_t *phy) 150 { 151 mac[STATUS] &= ~E1000_STATUS_LU; 152 phy[PHY_STATUS] &= ~MII_SR_LINK_STATUS; 153 phy[PHY_STATUS] &= ~MII_SR_AUTONEG_COMPLETE; 154 phy[PHY_LP_ABILITY] &= ~MII_LPAR_LPACK; 155 } 156 157 static inline void 158 e1000x_update_regs_on_link_up(uint32_t *mac, uint16_t *phy) 159 { 160 mac[STATUS] |= E1000_STATUS_LU; 161 phy[PHY_STATUS] |= MII_SR_LINK_STATUS; 162 } 163 164 void e1000x_update_rx_total_stats(uint32_t *mac, 165 size_t data_size, 166 size_t data_fcs_size); 167 168 void e1000x_core_prepare_eeprom(uint16_t *eeprom, 169 const uint16_t *templ, 170 uint32_t templ_size, 171 uint16_t dev_id, 172 const uint8_t *macaddr); 173 174 uint32_t e1000x_rxbufsize(uint32_t rctl); 175 176 bool e1000x_rx_ready(PCIDevice *d, uint32_t *mac); 177 178 bool e1000x_is_vlan_packet(const uint8_t *buf, uint16_t vet); 179 180 bool e1000x_rx_group_filter(uint32_t *mac, const uint8_t *buf); 181 182 bool e1000x_hw_rx_enabled(uint32_t *mac); 183 184 bool e1000x_is_oversized(uint32_t *mac, size_t size); 185 186 void e1000x_restart_autoneg(uint32_t *mac, uint16_t *phy, QEMUTimer *timer); 187 188 void e1000x_reset_mac_addr(NICState *nic, uint32_t *mac_regs, 189 uint8_t *mac_addr); 190 191 void e1000x_update_regs_on_autoneg_done(uint32_t *mac, uint16_t *phy); 192 193 void e1000x_increase_size_stats(uint32_t *mac, const int *size_regs, int size); 194 195 typedef struct e1000x_txd_props { 196 unsigned char sum_needed; 197 uint8_t ipcss; 198 uint8_t ipcso; 199 uint16_t ipcse; 200 uint8_t tucss; 201 uint8_t tucso; 202 uint16_t tucse; 203 uint32_t paylen; 204 uint8_t hdr_len; 205 uint16_t mss; 206 int8_t ip; 207 int8_t tcp; 208 bool tse; 209 bool cptse; 210 } e1000x_txd_props; 211 212 void e1000x_read_tx_ctx_descr(struct e1000_context_desc *d, 213 e1000x_txd_props *props); 214