1 /* 2 * Emulation of Allwinner EMAC Fast Ethernet controller and 3 * Realtek RTL8201CP PHY 4 * 5 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> 6 * 7 * Allwinner EMAC register definitions from Linux kernel are: 8 * Copyright 2012 Stefan Roese <sr@denx.de> 9 * Copyright 2013 Maxime Ripard <maxime.ripard@free-electrons.com> 10 * Copyright 1997 Sten Wang 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License 14 * version 2 as published by the Free Software Foundation. 15 * 16 * This program 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 19 * GNU General Public License for more details. 20 * 21 */ 22 23 #ifndef ALLWINNER_EMAC_H 24 #define ALLWINNER_EMAC_H 25 26 #include "qemu/units.h" 27 #include "net/net.h" 28 #include "qemu/fifo8.h" 29 #include "hw/net/mii.h" 30 31 #define TYPE_AW_EMAC "allwinner-emac" 32 #define AW_EMAC(obj) OBJECT_CHECK(AwEmacState, (obj), TYPE_AW_EMAC) 33 34 /* 35 * Allwinner EMAC register list 36 */ 37 #define EMAC_CTL_REG 0x00 38 39 #define EMAC_TX_MODE_REG 0x04 40 #define EMAC_TX_FLOW_REG 0x08 41 #define EMAC_TX_CTL0_REG 0x0C 42 #define EMAC_TX_CTL1_REG 0x10 43 #define EMAC_TX_INS_REG 0x14 44 #define EMAC_TX_PL0_REG 0x18 45 #define EMAC_TX_PL1_REG 0x1C 46 #define EMAC_TX_STA_REG 0x20 47 #define EMAC_TX_IO_DATA_REG 0x24 48 #define EMAC_TX_IO_DATA1_REG 0x28 49 #define EMAC_TX_TSVL0_REG 0x2C 50 #define EMAC_TX_TSVH0_REG 0x30 51 #define EMAC_TX_TSVL1_REG 0x34 52 #define EMAC_TX_TSVH1_REG 0x38 53 54 #define EMAC_RX_CTL_REG 0x3C 55 #define EMAC_RX_HASH0_REG 0x40 56 #define EMAC_RX_HASH1_REG 0x44 57 #define EMAC_RX_STA_REG 0x48 58 #define EMAC_RX_IO_DATA_REG 0x4C 59 #define EMAC_RX_FBC_REG 0x50 60 61 #define EMAC_INT_CTL_REG 0x54 62 #define EMAC_INT_STA_REG 0x58 63 64 #define EMAC_MAC_CTL0_REG 0x5C 65 #define EMAC_MAC_CTL1_REG 0x60 66 #define EMAC_MAC_IPGT_REG 0x64 67 #define EMAC_MAC_IPGR_REG 0x68 68 #define EMAC_MAC_CLRT_REG 0x6C 69 #define EMAC_MAC_MAXF_REG 0x70 70 #define EMAC_MAC_SUPP_REG 0x74 71 #define EMAC_MAC_TEST_REG 0x78 72 #define EMAC_MAC_MCFG_REG 0x7C 73 #define EMAC_MAC_MCMD_REG 0x80 74 #define EMAC_MAC_MADR_REG 0x84 75 #define EMAC_MAC_MWTD_REG 0x88 76 #define EMAC_MAC_MRDD_REG 0x8C 77 #define EMAC_MAC_MIND_REG 0x90 78 #define EMAC_MAC_SSRR_REG 0x94 79 #define EMAC_MAC_A0_REG 0x98 80 #define EMAC_MAC_A1_REG 0x9C 81 #define EMAC_MAC_A2_REG 0xA0 82 83 #define EMAC_SAFX_L_REG0 0xA4 84 #define EMAC_SAFX_H_REG0 0xA8 85 #define EMAC_SAFX_L_REG1 0xAC 86 #define EMAC_SAFX_H_REG1 0xB0 87 #define EMAC_SAFX_L_REG2 0xB4 88 #define EMAC_SAFX_H_REG2 0xB8 89 #define EMAC_SAFX_L_REG3 0xBC 90 #define EMAC_SAFX_H_REG3 0xC0 91 92 /* CTL register fields */ 93 #define EMAC_CTL_RESET (1 << 0) 94 #define EMAC_CTL_TX_EN (1 << 1) 95 #define EMAC_CTL_RX_EN (1 << 2) 96 97 /* TX MODE register fields */ 98 #define EMAC_TX_MODE_ABORTED_FRAME_EN (1 << 0) 99 #define EMAC_TX_MODE_DMA_EN (1 << 1) 100 101 /* RX CTL register fields */ 102 #define EMAC_RX_CTL_AUTO_DRQ_EN (1 << 1) 103 #define EMAC_RX_CTL_DMA_EN (1 << 2) 104 #define EMAC_RX_CTL_PASS_ALL_EN (1 << 4) 105 #define EMAC_RX_CTL_PASS_CTL_EN (1 << 5) 106 #define EMAC_RX_CTL_PASS_CRC_ERR_EN (1 << 6) 107 #define EMAC_RX_CTL_PASS_LEN_ERR_EN (1 << 7) 108 #define EMAC_RX_CTL_PASS_LEN_OOR_EN (1 << 8) 109 #define EMAC_RX_CTL_ACCEPT_UNICAST_EN (1 << 16) 110 #define EMAC_RX_CTL_DA_FILTER_EN (1 << 17) 111 #define EMAC_RX_CTL_ACCEPT_MULTICAST_EN (1 << 20) 112 #define EMAC_RX_CTL_HASH_FILTER_EN (1 << 21) 113 #define EMAC_RX_CTL_ACCEPT_BROADCAST_EN (1 << 22) 114 #define EMAC_RX_CTL_SA_FILTER_EN (1 << 24) 115 #define EMAC_RX_CTL_SA_FILTER_INVERT_EN (1 << 25) 116 117 /* RX IO DATA register fields */ 118 #define EMAC_RX_HEADER(len, status) (((len) & 0xffff) | ((status) << 16)) 119 #define EMAC_RX_IO_DATA_STATUS_CRC_ERR (1 << 4) 120 #define EMAC_RX_IO_DATA_STATUS_LEN_ERR (3 << 5) 121 #define EMAC_RX_IO_DATA_STATUS_OK (1 << 7) 122 #define EMAC_UNDOCUMENTED_MAGIC 0x0143414d /* header for RX frames */ 123 124 /* INT CTL and INT STA registers fields */ 125 #define EMAC_INT_TX_CHAN(x) (1 << (x)) 126 #define EMAC_INT_RX (1 << 8) 127 128 /* Due to lack of specifications, size of fifos is chosen arbitrarily */ 129 #define TX_FIFO_SIZE (4 * KiB) 130 #define RX_FIFO_SIZE (32 * KiB) 131 132 #define NUM_TX_FIFOS 2 133 #define RX_HDR_SIZE 8 134 #define CRC_SIZE 4 135 136 #define PHY_REG_SHIFT 0 137 #define PHY_ADDR_SHIFT 8 138 139 typedef struct RTL8201CPState { 140 uint16_t bmcr; 141 uint16_t bmsr; 142 uint16_t anar; 143 uint16_t anlpar; 144 } RTL8201CPState; 145 146 typedef struct AwEmacState { 147 /*< private >*/ 148 SysBusDevice parent_obj; 149 /*< public >*/ 150 151 MemoryRegion iomem; 152 qemu_irq irq; 153 NICState *nic; 154 NICConf conf; 155 RTL8201CPState mii; 156 uint8_t phy_addr; 157 158 uint32_t ctl; 159 uint32_t tx_mode; 160 uint32_t rx_ctl; 161 uint32_t int_ctl; 162 uint32_t int_sta; 163 uint32_t phy_target; 164 165 Fifo8 rx_fifo; 166 uint32_t rx_num_packets; 167 uint32_t rx_packet_size; 168 uint32_t rx_packet_pos; 169 170 Fifo8 tx_fifo[NUM_TX_FIFOS]; 171 uint32_t tx_length[NUM_TX_FIFOS]; 172 uint32_t tx_channel; 173 } AwEmacState; 174 175 #endif 176