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 2.1 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 #ifndef HW_NET_E1000X_COMMON_H 26 #define HW_NET_E1000X_COMMON_H 27 28 static inline void 29 e1000x_inc_reg_if_not_full(uint32_t *mac, int index) 30 { 31 if (mac[index] != UINT32_MAX) { 32 mac[index]++; 33 } 34 } 35 36 static inline void 37 e1000x_grow_8reg_if_not_full(uint32_t *mac, int index, int size) 38 { 39 uint64_t sum = mac[index] | (uint64_t)mac[index + 1] << 32; 40 41 if (sum + size < sum) { 42 sum = ~0ULL; 43 } else { 44 sum += size; 45 } 46 mac[index] = sum; 47 mac[index + 1] = sum >> 32; 48 } 49 50 static inline int 51 e1000x_vlan_enabled(uint32_t *mac) 52 { 53 return ((mac[CTRL] & E1000_CTRL_VME) != 0); 54 } 55 56 static inline int 57 e1000x_is_vlan_txd(uint32_t txd_lower) 58 { 59 return ((txd_lower & E1000_TXD_CMD_VLE) != 0); 60 } 61 62 static inline int 63 e1000x_vlan_rx_filter_enabled(uint32_t *mac) 64 { 65 return ((mac[RCTL] & E1000_RCTL_VFE) != 0); 66 } 67 68 static inline int 69 e1000x_fcs_len(uint32_t *mac) 70 { 71 /* FCS aka Ethernet CRC-32. We don't get it from backends and can't 72 * fill it in, just pad descriptor length by 4 bytes unless guest 73 * told us to strip it off the packet. */ 74 return (mac[RCTL] & E1000_RCTL_SECRC) ? 0 : 4; 75 } 76 77 static inline void 78 e1000x_update_regs_on_link_down(uint32_t *mac, uint16_t *phy) 79 { 80 mac[STATUS] &= ~E1000_STATUS_LU; 81 phy[MII_BMSR] &= ~MII_BMSR_LINK_ST; 82 phy[MII_BMSR] &= ~MII_BMSR_AN_COMP; 83 phy[MII_ANLPAR] &= ~MII_ANLPAR_ACK; 84 } 85 86 static inline void 87 e1000x_update_regs_on_link_up(uint32_t *mac, uint16_t *phy) 88 { 89 mac[STATUS] |= E1000_STATUS_LU; 90 phy[MII_BMSR] |= MII_BMSR_LINK_ST; 91 } 92 93 void e1000x_update_rx_total_stats(uint32_t *mac, 94 size_t data_size, 95 size_t data_fcs_size); 96 97 void e1000x_core_prepare_eeprom(uint16_t *eeprom, 98 const uint16_t *templ, 99 uint32_t templ_size, 100 uint16_t dev_id, 101 const uint8_t *macaddr); 102 103 uint32_t e1000x_rxbufsize(uint32_t rctl); 104 105 bool e1000x_rx_ready(PCIDevice *d, uint32_t *mac); 106 107 bool e1000x_is_vlan_packet(const void *buf, uint16_t vet); 108 109 bool e1000x_rx_group_filter(uint32_t *mac, const uint8_t *buf); 110 111 bool e1000x_hw_rx_enabled(uint32_t *mac); 112 113 bool e1000x_is_oversized(uint32_t *mac, size_t size); 114 115 void e1000x_restart_autoneg(uint32_t *mac, uint16_t *phy, QEMUTimer *timer); 116 117 void e1000x_reset_mac_addr(NICState *nic, uint32_t *mac_regs, 118 uint8_t *mac_addr); 119 120 void e1000x_update_regs_on_autoneg_done(uint32_t *mac, uint16_t *phy); 121 122 void e1000x_increase_size_stats(uint32_t *mac, const int *size_regs, int size); 123 124 typedef struct e1000x_txd_props { 125 uint8_t ipcss; 126 uint8_t ipcso; 127 uint16_t ipcse; 128 uint8_t tucss; 129 uint8_t tucso; 130 uint16_t tucse; 131 uint32_t paylen; 132 uint8_t hdr_len; 133 uint16_t mss; 134 int8_t ip; 135 int8_t tcp; 136 bool tse; 137 } e1000x_txd_props; 138 139 void e1000x_read_tx_ctx_descr(struct e1000_context_desc *d, 140 e1000x_txd_props *props); 141 142 void e1000x_timestamp(uint32_t *mac, int64_t timadj, size_t lo, size_t hi); 143 void e1000x_set_timinca(uint32_t *mac, int64_t *timadj, uint32_t val); 144 145 #endif 146