hw/net/e1000x_common.h

   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                                   eth_pkt_types_e pkt_type,
  95                                   size_t pkt_size,
  96                                   size_t pkt_fcs_size);
  97
  98 void e1000x_core_prepare_eeprom(uint16_t       *eeprom,
  99                                 const uint16_t *templ,
 100                                 uint32_t        templ_size,
 101                                 uint16_t        dev_id,
 102                                 const uint8_t  *macaddr);
 103
 104 uint32_t e1000x_rxbufsize(uint32_t rctl);
 105
 106 bool e1000x_rx_ready(PCIDevice *d, uint32_t *mac);
 107
 108 bool e1000x_is_vlan_packet(const void *buf, uint16_t vet);
 109
 110 bool e1000x_rx_vlan_filter(uint32_t *mac, const struct vlan_header *vhdr);
 111
 112 bool e1000x_rx_group_filter(uint32_t *mac, const struct eth_header *ehdr);
 113
 114 bool e1000x_hw_rx_enabled(uint32_t *mac);
 115
 116 bool e1000x_is_oversized(uint32_t *mac, size_t size);
 117
 118 void e1000x_restart_autoneg(uint32_t *mac, uint16_t *phy, QEMUTimer *timer);
 119
 120 void e1000x_reset_mac_addr(NICState *nic, uint32_t *mac_regs,
 121                            uint8_t *mac_addr);
 122
 123 void e1000x_update_regs_on_autoneg_done(uint32_t *mac, uint16_t *phy);
 124
 125 void e1000x_increase_size_stats(uint32_t *mac, const int *size_regs, int size);
 126
 127 typedef struct e1000x_txd_props {
 128     uint8_t ipcss;
 129     uint8_t ipcso;
 130     uint16_t ipcse;
 131     uint8_t tucss;
 132     uint8_t tucso;
 133     uint16_t tucse;
 134     uint32_t paylen;
 135     uint8_t hdr_len;
 136     uint16_t mss;
 137     int8_t ip;
 138     int8_t tcp;
 139     bool tse;
 140 } e1000x_txd_props;
 141
 142 void e1000x_read_tx_ctx_descr(struct e1000_context_desc *d,
 143                               e1000x_txd_props *props);
 144
 145 void e1000x_timestamp(uint32_t *mac, int64_t timadj, size_t lo, size_t hi);
 146 void e1000x_set_timinca(uint32_t *mac, int64_t *timadj, uint32_t val);
 147
 148 #endif