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#include "hw/sysbus.h" 31#include "qom/object.h" 32 33#define TYPE_AW_EMAC "allwinner-emac" 34OBJECT_DECLARE_SIMPLE_TYPE(AwEmacState, AW_EMAC) 35 36/* 37 * Allwinner EMAC register list 38 */ 39#define EMAC_CTL_REG 0x00 40 41#define EMAC_TX_MODE_REG 0x04 42#define EMAC_TX_FLOW_REG 0x08 43#define EMAC_TX_CTL0_REG 0x0C 44#define EMAC_TX_CTL1_REG 0x10 45#define EMAC_TX_INS_REG 0x14 46#define EMAC_TX_PL0_REG 0x18 47#define EMAC_TX_PL1_REG 0x1C 48#define EMAC_TX_STA_REG 0x20 49#define EMAC_TX_IO_DATA_REG 0x24 50#define EMAC_TX_IO_DATA1_REG 0x28 51#define EMAC_TX_TSVL0_REG 0x2C 52#define EMAC_TX_TSVH0_REG 0x30 53#define EMAC_TX_TSVL1_REG 0x34 54#define EMAC_TX_TSVH1_REG 0x38 55 56#define EMAC_RX_CTL_REG 0x3C 57#define EMAC_RX_HASH0_REG 0x40 58#define EMAC_RX_HASH1_REG 0x44 59#define EMAC_RX_STA_REG 0x48 60#define EMAC_RX_IO_DATA_REG 0x4C 61#define EMAC_RX_FBC_REG 0x50 62 63#define EMAC_INT_CTL_REG 0x54 64#define EMAC_INT_STA_REG 0x58 65 66#define EMAC_MAC_CTL0_REG 0x5C 67#define EMAC_MAC_CTL1_REG 0x60 68#define EMAC_MAC_IPGT_REG 0x64 69#define EMAC_MAC_IPGR_REG 0x68 70#define EMAC_MAC_CLRT_REG 0x6C 71#define EMAC_MAC_MAXF_REG 0x70 72#define EMAC_MAC_SUPP_REG 0x74 73#define EMAC_MAC_TEST_REG 0x78 74#define EMAC_MAC_MCFG_REG 0x7C 75#define EMAC_MAC_MCMD_REG 0x80 76#define EMAC_MAC_MADR_REG 0x84 77#define EMAC_MAC_MWTD_REG 0x88 78#define EMAC_MAC_MRDD_REG 0x8C 79#define EMAC_MAC_MIND_REG 0x90 80#define EMAC_MAC_SSRR_REG 0x94 81#define EMAC_MAC_A0_REG 0x98 82#define EMAC_MAC_A1_REG 0x9C 83#define EMAC_MAC_A2_REG 0xA0 84 85#define EMAC_SAFX_L_REG0 0xA4 86#define EMAC_SAFX_H_REG0 0xA8 87#define EMAC_SAFX_L_REG1 0xAC 88#define EMAC_SAFX_H_REG1 0xB0 89#define EMAC_SAFX_L_REG2 0xB4 90#define EMAC_SAFX_H_REG2 0xB8 91#define EMAC_SAFX_L_REG3 0xBC 92#define EMAC_SAFX_H_REG3 0xC0 93 94/* CTL register fields */ 95#define EMAC_CTL_RESET (1 << 0) 96#define EMAC_CTL_TX_EN (1 << 1) 97#define EMAC_CTL_RX_EN (1 << 2) 98 99/* TX MODE register fields */ 100#define EMAC_TX_MODE_ABORTED_FRAME_EN (1 << 0) 101#define EMAC_TX_MODE_DMA_EN (1 << 1) 102 103/* RX CTL register fields */ 104#define EMAC_RX_CTL_AUTO_DRQ_EN (1 << 1) 105#define EMAC_RX_CTL_DMA_EN (1 << 2) 106#define EMAC_RX_CTL_PASS_ALL_EN (1 << 4) 107#define EMAC_RX_CTL_PASS_CTL_EN (1 << 5) 108#define EMAC_RX_CTL_PASS_CRC_ERR_EN (1 << 6) 109#define EMAC_RX_CTL_PASS_LEN_ERR_EN (1 << 7) 110#define EMAC_RX_CTL_PASS_LEN_OOR_EN (1 << 8) 111#define EMAC_RX_CTL_ACCEPT_UNICAST_EN (1 << 16) 112#define EMAC_RX_CTL_DA_FILTER_EN (1 << 17) 113#define EMAC_RX_CTL_ACCEPT_MULTICAST_EN (1 << 20) 114#define EMAC_RX_CTL_HASH_FILTER_EN (1 << 21) 115#define EMAC_RX_CTL_ACCEPT_BROADCAST_EN (1 << 22) 116#define EMAC_RX_CTL_SA_FILTER_EN (1 << 24) 117#define EMAC_RX_CTL_SA_FILTER_INVERT_EN (1 << 25) 118 119/* RX IO DATA register fields */ 120#define EMAC_RX_HEADER(len, status) (((len) & 0xffff) | ((status) << 16)) 121#define EMAC_RX_IO_DATA_STATUS_CRC_ERR (1 << 4) 122#define EMAC_RX_IO_DATA_STATUS_LEN_ERR (3 << 5) 123#define EMAC_RX_IO_DATA_STATUS_OK (1 << 7) 124#define EMAC_UNDOCUMENTED_MAGIC 0x0143414d /* header for RX frames */ 125 126/* INT CTL and INT STA registers fields */ 127#define EMAC_INT_TX_CHAN(x) (1 << (x)) 128#define EMAC_INT_RX (1 << 8) 129 130/* Due to lack of specifications, size of fifos is chosen arbitrarily */ 131#define TX_FIFO_SIZE (4 * KiB) 132#define RX_FIFO_SIZE (32 * KiB) 133 134#define NUM_TX_FIFOS 2 135#define RX_HDR_SIZE 8 136#define CRC_SIZE 4 137 138#define PHY_REG_SHIFT 0 139#define PHY_ADDR_SHIFT 8 140 141typedef struct RTL8201CPState { 142 uint16_t bmcr; 143 uint16_t bmsr; 144 uint16_t anar; 145 uint16_t anlpar; 146} RTL8201CPState; 147 148struct AwEmacState { 149 /*< private >*/ 150 SysBusDevice parent_obj; 151 /*< public >*/ 152 153 MemoryRegion iomem; 154 qemu_irq irq; 155 NICState *nic; 156 NICConf conf; 157 RTL8201CPState mii; 158 uint8_t phy_addr; 159 160 uint32_t ctl; 161 uint32_t tx_mode; 162 uint32_t rx_ctl; 163 uint32_t int_ctl; 164 uint32_t int_sta; 165 uint32_t phy_target; 166 167 Fifo8 rx_fifo; 168 uint32_t rx_num_packets; 169 uint32_t rx_packet_size; 170 uint32_t rx_packet_pos; 171 172 Fifo8 tx_fifo[NUM_TX_FIFOS]; 173 uint32_t tx_length[NUM_TX_FIFOS]; 174 uint32_t tx_channel; 175}; 176 177#endif 178