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/*
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* SMSC LAN9118 Ethernet interface emulation
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*
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* Copyright (c) 2009 CodeSourcery, LLC.
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* Written by Paul Brook
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*
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* This code is licensed under the GNU GPL v2
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "hw/sysbus.h" |
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#include "net/net.h" |
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#include "hw/devices.h" |
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#include "sysemu/sysemu.h" |
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#include "hw/ptimer.h" |
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/* For crc32 */
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#include <zlib.h> |
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//#define DEBUG_LAN9118
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#ifdef DEBUG_LAN9118
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#define DPRINTF(fmt, ...) \
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do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0) |
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#define BADF(fmt, ...) \
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do { hw_error("lan9118: error: " fmt , ## __VA_ARGS__);} while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0) |
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#endif
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#define CSR_ID_REV 0x50 |
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#define CSR_IRQ_CFG 0x54 |
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#define CSR_INT_STS 0x58 |
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#define CSR_INT_EN 0x5c |
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#define CSR_BYTE_TEST 0x64 |
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#define CSR_FIFO_INT 0x68 |
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#define CSR_RX_CFG 0x6c |
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#define CSR_TX_CFG 0x70 |
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#define CSR_HW_CFG 0x74 |
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#define CSR_RX_DP_CTRL 0x78 |
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#define CSR_RX_FIFO_INF 0x7c |
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#define CSR_TX_FIFO_INF 0x80 |
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#define CSR_PMT_CTRL 0x84 |
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#define CSR_GPIO_CFG 0x88 |
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#define CSR_GPT_CFG 0x8c |
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#define CSR_GPT_CNT 0x90 |
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#define CSR_WORD_SWAP 0x98 |
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#define CSR_FREE_RUN 0x9c |
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#define CSR_RX_DROP 0xa0 |
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#define CSR_MAC_CSR_CMD 0xa4 |
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#define CSR_MAC_CSR_DATA 0xa8 |
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#define CSR_AFC_CFG 0xac |
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#define CSR_E2P_CMD 0xb0 |
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#define CSR_E2P_DATA 0xb4 |
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/* IRQ_CFG */
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#define IRQ_INT 0x00001000 |
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#define IRQ_EN 0x00000100 |
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#define IRQ_POL 0x00000010 |
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#define IRQ_TYPE 0x00000001 |
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|
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/* INT_STS/INT_EN */
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#define SW_INT 0x80000000 |
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#define TXSTOP_INT 0x02000000 |
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#define RXSTOP_INT 0x01000000 |
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#define RXDFH_INT 0x00800000 |
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#define TX_IOC_INT 0x00200000 |
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#define RXD_INT 0x00100000 |
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#define GPT_INT 0x00080000 |
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#define PHY_INT 0x00040000 |
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#define PME_INT 0x00020000 |
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#define TXSO_INT 0x00010000 |
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#define RWT_INT 0x00008000 |
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#define RXE_INT 0x00004000 |
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#define TXE_INT 0x00002000 |
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#define TDFU_INT 0x00000800 |
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#define TDFO_INT 0x00000400 |
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#define TDFA_INT 0x00000200 |
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#define TSFF_INT 0x00000100 |
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#define TSFL_INT 0x00000080 |
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#define RXDF_INT 0x00000040 |
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#define RDFL_INT 0x00000020 |
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#define RSFF_INT 0x00000010 |
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#define RSFL_INT 0x00000008 |
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#define GPIO2_INT 0x00000004 |
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#define GPIO1_INT 0x00000002 |
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#define GPIO0_INT 0x00000001 |
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#define RESERVED_INT 0x7c001000 |
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#define MAC_CR 1 |
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#define MAC_ADDRH 2 |
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#define MAC_ADDRL 3 |
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#define MAC_HASHH 4 |
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#define MAC_HASHL 5 |
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#define MAC_MII_ACC 6 |
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#define MAC_MII_DATA 7 |
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#define MAC_FLOW 8 |
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#define MAC_VLAN1 9 /* TODO */ |
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#define MAC_VLAN2 10 /* TODO */ |
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#define MAC_WUFF 11 /* TODO */ |
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#define MAC_WUCSR 12 /* TODO */ |
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#define MAC_CR_RXALL 0x80000000 |
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#define MAC_CR_RCVOWN 0x00800000 |
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#define MAC_CR_LOOPBK 0x00200000 |
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#define MAC_CR_FDPX 0x00100000 |
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#define MAC_CR_MCPAS 0x00080000 |
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#define MAC_CR_PRMS 0x00040000 |
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#define MAC_CR_INVFILT 0x00020000 |
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#define MAC_CR_PASSBAD 0x00010000 |
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#define MAC_CR_HO 0x00008000 |
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#define MAC_CR_HPFILT 0x00002000 |
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#define MAC_CR_LCOLL 0x00001000 |
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#define MAC_CR_BCAST 0x00000800 |
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#define MAC_CR_DISRTY 0x00000400 |
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#define MAC_CR_PADSTR 0x00000100 |
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#define MAC_CR_BOLMT 0x000000c0 |
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#define MAC_CR_DFCHK 0x00000020 |
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#define MAC_CR_TXEN 0x00000008 |
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#define MAC_CR_RXEN 0x00000004 |
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#define MAC_CR_RESERVED 0x7f404213 |
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#define PHY_INT_ENERGYON 0x80 |
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#define PHY_INT_AUTONEG_COMPLETE 0x40 |
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#define PHY_INT_FAULT 0x20 |
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#define PHY_INT_DOWN 0x10 |
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#define PHY_INT_AUTONEG_LP 0x08 |
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#define PHY_INT_PARFAULT 0x04 |
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#define PHY_INT_AUTONEG_PAGE 0x02 |
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#define GPT_TIMER_EN 0x20000000 |
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enum tx_state {
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TX_IDLE, |
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TX_B, |
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TX_DATA |
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}; |
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typedef struct { |
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/* state is a tx_state but we can't put enums in VMStateDescriptions. */
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uint32_t state; |
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uint32_t cmd_a; |
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uint32_t cmd_b; |
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int32_t buffer_size; |
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int32_t offset; |
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int32_t pad; |
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int32_t fifo_used; |
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int32_t len; |
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uint8_t data[2048];
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} LAN9118Packet; |
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static const VMStateDescription vmstate_lan9118_packet = { |
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.name = "lan9118_packet",
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) { |
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VMSTATE_UINT32(state, LAN9118Packet), |
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VMSTATE_UINT32(cmd_a, LAN9118Packet), |
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VMSTATE_UINT32(cmd_b, LAN9118Packet), |
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VMSTATE_INT32(buffer_size, LAN9118Packet), |
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VMSTATE_INT32(offset, LAN9118Packet), |
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VMSTATE_INT32(pad, LAN9118Packet), |
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VMSTATE_INT32(fifo_used, LAN9118Packet), |
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VMSTATE_INT32(len, LAN9118Packet), |
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VMSTATE_UINT8_ARRAY(data, LAN9118Packet, 2048),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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#define TYPE_LAN9118 "lan9118" |
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#define LAN9118(obj) OBJECT_CHECK(lan9118_state, (obj), TYPE_LAN9118)
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typedef struct { |
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SysBusDevice parent_obj; |
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NICState *nic; |
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NICConf conf; |
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qemu_irq irq; |
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MemoryRegion mmio; |
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ptimer_state *timer; |
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uint32_t irq_cfg; |
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uint32_t int_sts; |
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uint32_t int_en; |
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uint32_t fifo_int; |
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uint32_t rx_cfg; |
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uint32_t tx_cfg; |
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uint32_t hw_cfg; |
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uint32_t pmt_ctrl; |
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uint32_t gpio_cfg; |
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uint32_t gpt_cfg; |
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uint32_t word_swap; |
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uint32_t free_timer_start; |
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uint32_t mac_cmd; |
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uint32_t mac_data; |
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uint32_t afc_cfg; |
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uint32_t e2p_cmd; |
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uint32_t e2p_data; |
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uint32_t mac_cr; |
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uint32_t mac_hashh; |
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uint32_t mac_hashl; |
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uint32_t mac_mii_acc; |
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uint32_t mac_mii_data; |
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uint32_t mac_flow; |
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uint32_t phy_status; |
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uint32_t phy_control; |
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uint32_t phy_advertise; |
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uint32_t phy_int; |
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uint32_t phy_int_mask; |
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int32_t eeprom_writable; |
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uint8_t eeprom[128];
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int32_t tx_fifo_size; |
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LAN9118Packet *txp; |
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LAN9118Packet tx_packet; |
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int32_t tx_status_fifo_used; |
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int32_t tx_status_fifo_head; |
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uint32_t tx_status_fifo[512];
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int32_t rx_status_fifo_size; |
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int32_t rx_status_fifo_used; |
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int32_t rx_status_fifo_head; |
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uint32_t rx_status_fifo[896];
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int32_t rx_fifo_size; |
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int32_t rx_fifo_used; |
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int32_t rx_fifo_head; |
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uint32_t rx_fifo[3360];
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int32_t rx_packet_size_head; |
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int32_t rx_packet_size_tail; |
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int32_t rx_packet_size[1024];
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int32_t rxp_offset; |
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int32_t rxp_size; |
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int32_t rxp_pad; |
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uint32_t write_word_prev_offset; |
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uint32_t write_word_n; |
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uint16_t write_word_l; |
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uint16_t write_word_h; |
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uint32_t read_word_prev_offset; |
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uint32_t read_word_n; |
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uint32_t read_long; |
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uint32_t mode_16bit; |
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} lan9118_state; |
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static const VMStateDescription vmstate_lan9118 = { |
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.name = "lan9118",
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.version_id = 2,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) { |
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VMSTATE_PTIMER(timer, lan9118_state), |
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VMSTATE_UINT32(irq_cfg, lan9118_state), |
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VMSTATE_UINT32(int_sts, lan9118_state), |
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VMSTATE_UINT32(int_en, lan9118_state), |
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VMSTATE_UINT32(fifo_int, lan9118_state), |
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VMSTATE_UINT32(rx_cfg, lan9118_state), |
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VMSTATE_UINT32(tx_cfg, lan9118_state), |
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VMSTATE_UINT32(hw_cfg, lan9118_state), |
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VMSTATE_UINT32(pmt_ctrl, lan9118_state), |
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VMSTATE_UINT32(gpio_cfg, lan9118_state), |
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VMSTATE_UINT32(gpt_cfg, lan9118_state), |
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VMSTATE_UINT32(word_swap, lan9118_state), |
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VMSTATE_UINT32(free_timer_start, lan9118_state), |
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VMSTATE_UINT32(mac_cmd, lan9118_state), |
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VMSTATE_UINT32(mac_data, lan9118_state), |
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VMSTATE_UINT32(afc_cfg, lan9118_state), |
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VMSTATE_UINT32(e2p_cmd, lan9118_state), |
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VMSTATE_UINT32(e2p_data, lan9118_state), |
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VMSTATE_UINT32(mac_cr, lan9118_state), |
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VMSTATE_UINT32(mac_hashh, lan9118_state), |
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VMSTATE_UINT32(mac_hashl, lan9118_state), |
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VMSTATE_UINT32(mac_mii_acc, lan9118_state), |
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VMSTATE_UINT32(mac_mii_data, lan9118_state), |
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VMSTATE_UINT32(mac_flow, lan9118_state), |
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VMSTATE_UINT32(phy_status, lan9118_state), |
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VMSTATE_UINT32(phy_control, lan9118_state), |
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VMSTATE_UINT32(phy_advertise, lan9118_state), |
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VMSTATE_UINT32(phy_int, lan9118_state), |
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VMSTATE_UINT32(phy_int_mask, lan9118_state), |
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VMSTATE_INT32(eeprom_writable, lan9118_state), |
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VMSTATE_UINT8_ARRAY(eeprom, lan9118_state, 128),
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VMSTATE_INT32(tx_fifo_size, lan9118_state), |
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/* txp always points at tx_packet so need not be saved */
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VMSTATE_STRUCT(tx_packet, lan9118_state, 0,
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vmstate_lan9118_packet, LAN9118Packet), |
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VMSTATE_INT32(tx_status_fifo_used, lan9118_state), |
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VMSTATE_INT32(tx_status_fifo_head, lan9118_state), |
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VMSTATE_UINT32_ARRAY(tx_status_fifo, lan9118_state, 512),
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VMSTATE_INT32(rx_status_fifo_size, lan9118_state), |
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VMSTATE_INT32(rx_status_fifo_used, lan9118_state), |
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VMSTATE_INT32(rx_status_fifo_head, lan9118_state), |
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VMSTATE_UINT32_ARRAY(rx_status_fifo, lan9118_state, 896),
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VMSTATE_INT32(rx_fifo_size, lan9118_state), |
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VMSTATE_INT32(rx_fifo_used, lan9118_state), |
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VMSTATE_INT32(rx_fifo_head, lan9118_state), |
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VMSTATE_UINT32_ARRAY(rx_fifo, lan9118_state, 3360),
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VMSTATE_INT32(rx_packet_size_head, lan9118_state), |
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VMSTATE_INT32(rx_packet_size_tail, lan9118_state), |
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VMSTATE_INT32_ARRAY(rx_packet_size, lan9118_state, 1024),
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VMSTATE_INT32(rxp_offset, lan9118_state), |
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VMSTATE_INT32(rxp_size, lan9118_state), |
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VMSTATE_INT32(rxp_pad, lan9118_state), |
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VMSTATE_UINT32_V(write_word_prev_offset, lan9118_state, 2),
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VMSTATE_UINT32_V(write_word_n, lan9118_state, 2),
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VMSTATE_UINT16_V(write_word_l, lan9118_state, 2),
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VMSTATE_UINT16_V(write_word_h, lan9118_state, 2),
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VMSTATE_UINT32_V(read_word_prev_offset, lan9118_state, 2),
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VMSTATE_UINT32_V(read_word_n, lan9118_state, 2),
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VMSTATE_UINT32_V(read_long, lan9118_state, 2),
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VMSTATE_UINT32_V(mode_16bit, lan9118_state, 2),
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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|
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static void lan9118_update(lan9118_state *s) |
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{ |
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int level;
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/* TODO: Implement FIFO level IRQs. */
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level = (s->int_sts & s->int_en) != 0;
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if (level) {
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s->irq_cfg |= IRQ_INT; |
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} else {
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s->irq_cfg &= ~IRQ_INT; |
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} |
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if ((s->irq_cfg & IRQ_EN) == 0) { |
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level = 0;
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} |
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if ((s->irq_cfg & (IRQ_TYPE | IRQ_POL)) != (IRQ_TYPE | IRQ_POL)) {
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/* Interrupt is active low unless we're configured as
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* active-high polarity, push-pull type.
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*/
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level = !level; |
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} |
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qemu_set_irq(s->irq, level); |
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} |
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|
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static void lan9118_mac_changed(lan9118_state *s) |
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{ |
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qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); |
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} |
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|
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static void lan9118_reload_eeprom(lan9118_state *s) |
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{ |
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int i;
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if (s->eeprom[0] != 0xa5) { |
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s->e2p_cmd &= ~0x10;
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DPRINTF("MACADDR load failed\n");
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return;
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} |
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for (i = 0; i < 6; i++) { |
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s->conf.macaddr.a[i] = s->eeprom[i + 1];
|
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} |
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s->e2p_cmd |= 0x10;
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DPRINTF("MACADDR loaded from eeprom\n");
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lan9118_mac_changed(s); |
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} |
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|
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static void phy_update_irq(lan9118_state *s) |
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{ |
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if (s->phy_int & s->phy_int_mask) {
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s->int_sts |= PHY_INT; |
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} else {
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s->int_sts &= ~PHY_INT; |
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} |
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lan9118_update(s); |
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} |
376 |
|
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static void phy_update_link(lan9118_state *s) |
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{ |
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/* Autonegotiation status mirrors link status. */
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if (qemu_get_queue(s->nic)->link_down) {
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s->phy_status &= ~0x0024;
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s->phy_int |= PHY_INT_DOWN; |
383 |
} else {
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s->phy_status |= 0x0024;
|
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s->phy_int |= PHY_INT_ENERGYON; |
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s->phy_int |= PHY_INT_AUTONEG_COMPLETE; |
387 |
} |
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phy_update_irq(s); |
389 |
} |
390 |
|
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static void lan9118_set_link(NetClientState *nc) |
392 |
{ |
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phy_update_link(qemu_get_nic_opaque(nc)); |
394 |
} |
395 |
|
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static void phy_reset(lan9118_state *s) |
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{ |
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s->phy_status = 0x7809;
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s->phy_control = 0x3000;
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s->phy_advertise = 0x01e1;
|
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s->phy_int_mask = 0;
|
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s->phy_int = 0;
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phy_update_link(s); |
404 |
} |
405 |
|
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static void lan9118_reset(DeviceState *d) |
407 |
{ |
408 |
lan9118_state *s = LAN9118(d); |
409 |
|
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s->irq_cfg &= (IRQ_TYPE | IRQ_POL); |
411 |
s->int_sts = 0;
|
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s->int_en = 0;
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s->fifo_int = 0x48000000;
|
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s->rx_cfg = 0;
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s->tx_cfg = 0;
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s->hw_cfg = s->mode_16bit ? 0x00050000 : 0x00050004; |
417 |
s->pmt_ctrl &= 0x45;
|
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s->gpio_cfg = 0;
|
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s->txp->fifo_used = 0;
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s->txp->state = TX_IDLE; |
421 |
s->txp->cmd_a = 0xffffffffu;
|
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s->txp->cmd_b = 0xffffffffu;
|
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s->txp->len = 0;
|
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s->txp->fifo_used = 0;
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s->tx_fifo_size = 4608;
|
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s->tx_status_fifo_used = 0;
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s->rx_status_fifo_size = 704;
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s->rx_fifo_size = 2640;
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s->rx_fifo_used = 0;
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s->rx_status_fifo_size = 176;
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s->rx_status_fifo_used = 0;
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s->rxp_offset = 0;
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s->rxp_size = 0;
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s->rxp_pad = 0;
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s->rx_packet_size_tail = s->rx_packet_size_head; |
436 |
s->rx_packet_size[s->rx_packet_size_head] = 0;
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s->mac_cmd = 0;
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s->mac_data = 0;
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s->afc_cfg = 0;
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s->e2p_cmd = 0;
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s->e2p_data = 0;
|
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s->free_timer_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 40;
|
443 |
|
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ptimer_stop(s->timer); |
445 |
ptimer_set_count(s->timer, 0xffff);
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s->gpt_cfg = 0xffff;
|
447 |
|
448 |
s->mac_cr = MAC_CR_PRMS; |
449 |
s->mac_hashh = 0;
|
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s->mac_hashl = 0;
|
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s->mac_mii_acc = 0;
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s->mac_mii_data = 0;
|
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s->mac_flow = 0;
|
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|
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s->read_word_n = 0;
|
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s->write_word_n = 0;
|
457 |
|
458 |
phy_reset(s); |
459 |
|
460 |
s->eeprom_writable = 0;
|
461 |
lan9118_reload_eeprom(s); |
462 |
} |
463 |
|
464 |
static int lan9118_can_receive(NetClientState *nc) |
465 |
{ |
466 |
return 1; |
467 |
} |
468 |
|
469 |
static void rx_fifo_push(lan9118_state *s, uint32_t val) |
470 |
{ |
471 |
int fifo_pos;
|
472 |
fifo_pos = s->rx_fifo_head + s->rx_fifo_used; |
473 |
if (fifo_pos >= s->rx_fifo_size)
|
474 |
fifo_pos -= s->rx_fifo_size; |
475 |
s->rx_fifo[fifo_pos] = val; |
476 |
s->rx_fifo_used++; |
477 |
} |
478 |
|
479 |
/* Return nonzero if the packet is accepted by the filter. */
|
480 |
static int lan9118_filter(lan9118_state *s, const uint8_t *addr) |
481 |
{ |
482 |
int multicast;
|
483 |
uint32_t hash; |
484 |
|
485 |
if (s->mac_cr & MAC_CR_PRMS) {
|
486 |
return 1; |
487 |
} |
488 |
if (addr[0] == 0xff && addr[1] == 0xff && addr[2] == 0xff && |
489 |
addr[3] == 0xff && addr[4] == 0xff && addr[5] == 0xff) { |
490 |
return (s->mac_cr & MAC_CR_BCAST) == 0; |
491 |
} |
492 |
|
493 |
multicast = addr[0] & 1; |
494 |
if (multicast &&s->mac_cr & MAC_CR_MCPAS) {
|
495 |
return 1; |
496 |
} |
497 |
if (multicast ? (s->mac_cr & MAC_CR_HPFILT) == 0 |
498 |
: (s->mac_cr & MAC_CR_HO) == 0) {
|
499 |
/* Exact matching. */
|
500 |
hash = memcmp(addr, s->conf.macaddr.a, 6);
|
501 |
if (s->mac_cr & MAC_CR_INVFILT) {
|
502 |
return hash != 0; |
503 |
} else {
|
504 |
return hash == 0; |
505 |
} |
506 |
} else {
|
507 |
/* Hash matching */
|
508 |
hash = compute_mcast_idx(addr); |
509 |
if (hash & 0x20) { |
510 |
return (s->mac_hashh >> (hash & 0x1f)) & 1; |
511 |
} else {
|
512 |
return (s->mac_hashl >> (hash & 0x1f)) & 1; |
513 |
} |
514 |
} |
515 |
} |
516 |
|
517 |
static ssize_t lan9118_receive(NetClientState *nc, const uint8_t *buf, |
518 |
size_t size) |
519 |
{ |
520 |
lan9118_state *s = qemu_get_nic_opaque(nc); |
521 |
int fifo_len;
|
522 |
int offset;
|
523 |
int src_pos;
|
524 |
int n;
|
525 |
int filter;
|
526 |
uint32_t val; |
527 |
uint32_t crc; |
528 |
uint32_t status; |
529 |
|
530 |
if ((s->mac_cr & MAC_CR_RXEN) == 0) { |
531 |
return -1; |
532 |
} |
533 |
|
534 |
if (size >= 2048 || size < 14) { |
535 |
return -1; |
536 |
} |
537 |
|
538 |
/* TODO: Implement FIFO overflow notification. */
|
539 |
if (s->rx_status_fifo_used == s->rx_status_fifo_size) {
|
540 |
return -1; |
541 |
} |
542 |
|
543 |
filter = lan9118_filter(s, buf); |
544 |
if (!filter && (s->mac_cr & MAC_CR_RXALL) == 0) { |
545 |
return size;
|
546 |
} |
547 |
|
548 |
offset = (s->rx_cfg >> 8) & 0x1f; |
549 |
n = offset & 3;
|
550 |
fifo_len = (size + n + 3) >> 2; |
551 |
/* Add a word for the CRC. */
|
552 |
fifo_len++; |
553 |
if (s->rx_fifo_size - s->rx_fifo_used < fifo_len) {
|
554 |
return -1; |
555 |
} |
556 |
|
557 |
DPRINTF("Got packet len:%d fifo:%d filter:%s\n",
|
558 |
(int)size, fifo_len, filter ? "pass" : "fail"); |
559 |
val = 0;
|
560 |
crc = bswap32(crc32(~0, buf, size));
|
561 |
for (src_pos = 0; src_pos < size; src_pos++) { |
562 |
val = (val >> 8) | ((uint32_t)buf[src_pos] << 24); |
563 |
n++; |
564 |
if (n == 4) { |
565 |
n = 0;
|
566 |
rx_fifo_push(s, val); |
567 |
val = 0;
|
568 |
} |
569 |
} |
570 |
if (n) {
|
571 |
val >>= ((4 - n) * 8); |
572 |
val |= crc << (n * 8);
|
573 |
rx_fifo_push(s, val); |
574 |
val = crc >> ((4 - n) * 8); |
575 |
rx_fifo_push(s, val); |
576 |
} else {
|
577 |
rx_fifo_push(s, crc); |
578 |
} |
579 |
n = s->rx_status_fifo_head + s->rx_status_fifo_used; |
580 |
if (n >= s->rx_status_fifo_size) {
|
581 |
n -= s->rx_status_fifo_size; |
582 |
} |
583 |
s->rx_packet_size[s->rx_packet_size_tail] = fifo_len; |
584 |
s->rx_packet_size_tail = (s->rx_packet_size_tail + 1023) & 1023; |
585 |
s->rx_status_fifo_used++; |
586 |
|
587 |
status = (size + 4) << 16; |
588 |
if (buf[0] == 0xff && buf[1] == 0xff && buf[2] == 0xff && |
589 |
buf[3] == 0xff && buf[4] == 0xff && buf[5] == 0xff) { |
590 |
status |= 0x00002000;
|
591 |
} else if (buf[0] & 1) { |
592 |
status |= 0x00000400;
|
593 |
} |
594 |
if (!filter) {
|
595 |
status |= 0x40000000;
|
596 |
} |
597 |
s->rx_status_fifo[n] = status; |
598 |
|
599 |
if (s->rx_status_fifo_used > (s->fifo_int & 0xff)) { |
600 |
s->int_sts |= RSFL_INT; |
601 |
} |
602 |
lan9118_update(s); |
603 |
|
604 |
return size;
|
605 |
} |
606 |
|
607 |
static uint32_t rx_fifo_pop(lan9118_state *s)
|
608 |
{ |
609 |
int n;
|
610 |
uint32_t val; |
611 |
|
612 |
if (s->rxp_size == 0 && s->rxp_pad == 0) { |
613 |
s->rxp_size = s->rx_packet_size[s->rx_packet_size_head]; |
614 |
s->rx_packet_size[s->rx_packet_size_head] = 0;
|
615 |
if (s->rxp_size != 0) { |
616 |
s->rx_packet_size_head = (s->rx_packet_size_head + 1023) & 1023; |
617 |
s->rxp_offset = (s->rx_cfg >> 10) & 7; |
618 |
n = s->rxp_offset + s->rxp_size; |
619 |
switch (s->rx_cfg >> 30) { |
620 |
case 1: |
621 |
n = (-n) & 3;
|
622 |
break;
|
623 |
case 2: |
624 |
n = (-n) & 7;
|
625 |
break;
|
626 |
default:
|
627 |
n = 0;
|
628 |
break;
|
629 |
} |
630 |
s->rxp_pad = n; |
631 |
DPRINTF("Pop packet size:%d offset:%d pad: %d\n",
|
632 |
s->rxp_size, s->rxp_offset, s->rxp_pad); |
633 |
} |
634 |
} |
635 |
if (s->rxp_offset > 0) { |
636 |
s->rxp_offset--; |
637 |
val = 0;
|
638 |
} else if (s->rxp_size > 0) { |
639 |
s->rxp_size--; |
640 |
val = s->rx_fifo[s->rx_fifo_head++]; |
641 |
if (s->rx_fifo_head >= s->rx_fifo_size) {
|
642 |
s->rx_fifo_head -= s->rx_fifo_size; |
643 |
} |
644 |
s->rx_fifo_used--; |
645 |
} else if (s->rxp_pad > 0) { |
646 |
s->rxp_pad--; |
647 |
val = 0;
|
648 |
} else {
|
649 |
DPRINTF("RX underflow\n");
|
650 |
s->int_sts |= RXE_INT; |
651 |
val = 0;
|
652 |
} |
653 |
lan9118_update(s); |
654 |
return val;
|
655 |
} |
656 |
|
657 |
static void do_tx_packet(lan9118_state *s) |
658 |
{ |
659 |
int n;
|
660 |
uint32_t status; |
661 |
|
662 |
/* FIXME: Honor TX disable, and allow queueing of packets. */
|
663 |
if (s->phy_control & 0x4000) { |
664 |
/* This assumes the receive routine doesn't touch the VLANClient. */
|
665 |
lan9118_receive(qemu_get_queue(s->nic), s->txp->data, s->txp->len); |
666 |
} else {
|
667 |
qemu_send_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len); |
668 |
} |
669 |
s->txp->fifo_used = 0;
|
670 |
|
671 |
if (s->tx_status_fifo_used == 512) { |
672 |
/* Status FIFO full */
|
673 |
return;
|
674 |
} |
675 |
/* Add entry to status FIFO. */
|
676 |
status = s->txp->cmd_b & 0xffff0000u;
|
677 |
DPRINTF("Sent packet tag:%04x len %d\n", status >> 16, s->txp->len); |
678 |
n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511;
|
679 |
s->tx_status_fifo[n] = status; |
680 |
s->tx_status_fifo_used++; |
681 |
if (s->tx_status_fifo_used == 512) { |
682 |
s->int_sts |= TSFF_INT; |
683 |
/* TODO: Stop transmission. */
|
684 |
} |
685 |
} |
686 |
|
687 |
static uint32_t rx_status_fifo_pop(lan9118_state *s)
|
688 |
{ |
689 |
uint32_t val; |
690 |
|
691 |
val = s->rx_status_fifo[s->rx_status_fifo_head]; |
692 |
if (s->rx_status_fifo_used != 0) { |
693 |
s->rx_status_fifo_used--; |
694 |
s->rx_status_fifo_head++; |
695 |
if (s->rx_status_fifo_head >= s->rx_status_fifo_size) {
|
696 |
s->rx_status_fifo_head -= s->rx_status_fifo_size; |
697 |
} |
698 |
/* ??? What value should be returned when the FIFO is empty? */
|
699 |
DPRINTF("RX status pop 0x%08x\n", val);
|
700 |
} |
701 |
return val;
|
702 |
} |
703 |
|
704 |
static uint32_t tx_status_fifo_pop(lan9118_state *s)
|
705 |
{ |
706 |
uint32_t val; |
707 |
|
708 |
val = s->tx_status_fifo[s->tx_status_fifo_head]; |
709 |
if (s->tx_status_fifo_used != 0) { |
710 |
s->tx_status_fifo_used--; |
711 |
s->tx_status_fifo_head = (s->tx_status_fifo_head + 1) & 511; |
712 |
/* ??? What value should be returned when the FIFO is empty? */
|
713 |
} |
714 |
return val;
|
715 |
} |
716 |
|
717 |
static void tx_fifo_push(lan9118_state *s, uint32_t val) |
718 |
{ |
719 |
int n;
|
720 |
|
721 |
if (s->txp->fifo_used == s->tx_fifo_size) {
|
722 |
s->int_sts |= TDFO_INT; |
723 |
return;
|
724 |
} |
725 |
switch (s->txp->state) {
|
726 |
case TX_IDLE:
|
727 |
s->txp->cmd_a = val & 0x831f37ff;
|
728 |
s->txp->fifo_used++; |
729 |
s->txp->state = TX_B; |
730 |
s->txp->buffer_size = extract32(s->txp->cmd_a, 0, 11); |
731 |
s->txp->offset = extract32(s->txp->cmd_a, 16, 5); |
732 |
break;
|
733 |
case TX_B:
|
734 |
if (s->txp->cmd_a & 0x2000) { |
735 |
/* First segment */
|
736 |
s->txp->cmd_b = val; |
737 |
s->txp->fifo_used++; |
738 |
/* End alignment does not include command words. */
|
739 |
n = (s->txp->buffer_size + s->txp->offset + 3) >> 2; |
740 |
switch ((n >> 24) & 3) { |
741 |
case 1: |
742 |
n = (-n) & 3;
|
743 |
break;
|
744 |
case 2: |
745 |
n = (-n) & 7;
|
746 |
break;
|
747 |
default:
|
748 |
n = 0;
|
749 |
} |
750 |
s->txp->pad = n; |
751 |
s->txp->len = 0;
|
752 |
} |
753 |
DPRINTF("Block len:%d offset:%d pad:%d cmd %08x\n",
|
754 |
s->txp->buffer_size, s->txp->offset, s->txp->pad, |
755 |
s->txp->cmd_a); |
756 |
s->txp->state = TX_DATA; |
757 |
break;
|
758 |
case TX_DATA:
|
759 |
if (s->txp->offset >= 4) { |
760 |
s->txp->offset -= 4;
|
761 |
break;
|
762 |
} |
763 |
if (s->txp->buffer_size <= 0 && s->txp->pad != 0) { |
764 |
s->txp->pad--; |
765 |
} else {
|
766 |
n = MIN(4, s->txp->buffer_size + s->txp->offset);
|
767 |
while (s->txp->offset) {
|
768 |
val >>= 8;
|
769 |
n--; |
770 |
s->txp->offset--; |
771 |
} |
772 |
/* Documentation is somewhat unclear on the ordering of bytes
|
773 |
in FIFO words. Empirical results show it to be little-endian.
|
774 |
*/
|
775 |
/* TODO: FIFO overflow checking. */
|
776 |
while (n--) {
|
777 |
s->txp->data[s->txp->len] = val & 0xff;
|
778 |
s->txp->len++; |
779 |
val >>= 8;
|
780 |
s->txp->buffer_size--; |
781 |
} |
782 |
s->txp->fifo_used++; |
783 |
} |
784 |
if (s->txp->buffer_size <= 0 && s->txp->pad == 0) { |
785 |
if (s->txp->cmd_a & 0x1000) { |
786 |
do_tx_packet(s); |
787 |
} |
788 |
if (s->txp->cmd_a & 0x80000000) { |
789 |
s->int_sts |= TX_IOC_INT; |
790 |
} |
791 |
s->txp->state = TX_IDLE; |
792 |
} |
793 |
break;
|
794 |
} |
795 |
} |
796 |
|
797 |
static uint32_t do_phy_read(lan9118_state *s, int reg) |
798 |
{ |
799 |
uint32_t val; |
800 |
|
801 |
switch (reg) {
|
802 |
case 0: /* Basic Control */ |
803 |
return s->phy_control;
|
804 |
case 1: /* Basic Status */ |
805 |
return s->phy_status;
|
806 |
case 2: /* ID1 */ |
807 |
return 0x0007; |
808 |
case 3: /* ID2 */ |
809 |
return 0xc0d1; |
810 |
case 4: /* Auto-neg advertisement */ |
811 |
return s->phy_advertise;
|
812 |
case 5: /* Auto-neg Link Partner Ability */ |
813 |
return 0x0f71; |
814 |
case 6: /* Auto-neg Expansion */ |
815 |
return 1; |
816 |
/* TODO 17, 18, 27, 29, 30, 31 */
|
817 |
case 29: /* Interrupt source. */ |
818 |
val = s->phy_int; |
819 |
s->phy_int = 0;
|
820 |
phy_update_irq(s); |
821 |
return val;
|
822 |
case 30: /* Interrupt mask */ |
823 |
return s->phy_int_mask;
|
824 |
default:
|
825 |
BADF("PHY read reg %d\n", reg);
|
826 |
return 0; |
827 |
} |
828 |
} |
829 |
|
830 |
static void do_phy_write(lan9118_state *s, int reg, uint32_t val) |
831 |
{ |
832 |
switch (reg) {
|
833 |
case 0: /* Basic Control */ |
834 |
if (val & 0x8000) { |
835 |
phy_reset(s); |
836 |
break;
|
837 |
} |
838 |
s->phy_control = val & 0x7980;
|
839 |
/* Complete autonegotiation immediately. */
|
840 |
if (val & 0x1000) { |
841 |
s->phy_status |= 0x0020;
|
842 |
} |
843 |
break;
|
844 |
case 4: /* Auto-neg advertisement */ |
845 |
s->phy_advertise = (val & 0x2d7f) | 0x80; |
846 |
break;
|
847 |
/* TODO 17, 18, 27, 31 */
|
848 |
case 30: /* Interrupt mask */ |
849 |
s->phy_int_mask = val & 0xff;
|
850 |
phy_update_irq(s); |
851 |
break;
|
852 |
default:
|
853 |
BADF("PHY write reg %d = 0x%04x\n", reg, val);
|
854 |
} |
855 |
} |
856 |
|
857 |
static void do_mac_write(lan9118_state *s, int reg, uint32_t val) |
858 |
{ |
859 |
switch (reg) {
|
860 |
case MAC_CR:
|
861 |
if ((s->mac_cr & MAC_CR_RXEN) != 0 && (val & MAC_CR_RXEN) == 0) { |
862 |
s->int_sts |= RXSTOP_INT; |
863 |
} |
864 |
s->mac_cr = val & ~MAC_CR_RESERVED; |
865 |
DPRINTF("MAC_CR: %08x\n", val);
|
866 |
break;
|
867 |
case MAC_ADDRH:
|
868 |
s->conf.macaddr.a[4] = val & 0xff; |
869 |
s->conf.macaddr.a[5] = (val >> 8) & 0xff; |
870 |
lan9118_mac_changed(s); |
871 |
break;
|
872 |
case MAC_ADDRL:
|
873 |
s->conf.macaddr.a[0] = val & 0xff; |
874 |
s->conf.macaddr.a[1] = (val >> 8) & 0xff; |
875 |
s->conf.macaddr.a[2] = (val >> 16) & 0xff; |
876 |
s->conf.macaddr.a[3] = (val >> 24) & 0xff; |
877 |
lan9118_mac_changed(s); |
878 |
break;
|
879 |
case MAC_HASHH:
|
880 |
s->mac_hashh = val; |
881 |
break;
|
882 |
case MAC_HASHL:
|
883 |
s->mac_hashl = val; |
884 |
break;
|
885 |
case MAC_MII_ACC:
|
886 |
s->mac_mii_acc = val & 0xffc2;
|
887 |
if (val & 2) { |
888 |
DPRINTF("PHY write %d = 0x%04x\n",
|
889 |
(val >> 6) & 0x1f, s->mac_mii_data); |
890 |
do_phy_write(s, (val >> 6) & 0x1f, s->mac_mii_data); |
891 |
} else {
|
892 |
s->mac_mii_data = do_phy_read(s, (val >> 6) & 0x1f); |
893 |
DPRINTF("PHY read %d = 0x%04x\n",
|
894 |
(val >> 6) & 0x1f, s->mac_mii_data); |
895 |
} |
896 |
break;
|
897 |
case MAC_MII_DATA:
|
898 |
s->mac_mii_data = val & 0xffff;
|
899 |
break;
|
900 |
case MAC_FLOW:
|
901 |
s->mac_flow = val & 0xffff0000;
|
902 |
break;
|
903 |
case MAC_VLAN1:
|
904 |
/* Writing to this register changes a condition for
|
905 |
* FrameTooLong bit in rx_status. Since we do not set
|
906 |
* FrameTooLong anyway, just ignore write to this.
|
907 |
*/
|
908 |
break;
|
909 |
default:
|
910 |
hw_error("lan9118: Unimplemented MAC register write: %d = 0x%x\n",
|
911 |
s->mac_cmd & 0xf, val);
|
912 |
} |
913 |
} |
914 |
|
915 |
static uint32_t do_mac_read(lan9118_state *s, int reg) |
916 |
{ |
917 |
switch (reg) {
|
918 |
case MAC_CR:
|
919 |
return s->mac_cr;
|
920 |
case MAC_ADDRH:
|
921 |
return s->conf.macaddr.a[4] | (s->conf.macaddr.a[5] << 8); |
922 |
case MAC_ADDRL:
|
923 |
return s->conf.macaddr.a[0] | (s->conf.macaddr.a[1] << 8) |
924 |
| (s->conf.macaddr.a[2] << 16) | (s->conf.macaddr.a[3] << 24); |
925 |
case MAC_HASHH:
|
926 |
return s->mac_hashh;
|
927 |
break;
|
928 |
case MAC_HASHL:
|
929 |
return s->mac_hashl;
|
930 |
break;
|
931 |
case MAC_MII_ACC:
|
932 |
return s->mac_mii_acc;
|
933 |
case MAC_MII_DATA:
|
934 |
return s->mac_mii_data;
|
935 |
case MAC_FLOW:
|
936 |
return s->mac_flow;
|
937 |
default:
|
938 |
hw_error("lan9118: Unimplemented MAC register read: %d\n",
|
939 |
s->mac_cmd & 0xf);
|
940 |
} |
941 |
} |
942 |
|
943 |
static void lan9118_eeprom_cmd(lan9118_state *s, int cmd, int addr) |
944 |
{ |
945 |
s->e2p_cmd = (s->e2p_cmd & 0x10) | (cmd << 28) | addr; |
946 |
switch (cmd) {
|
947 |
case 0: |
948 |
s->e2p_data = s->eeprom[addr]; |
949 |
DPRINTF("EEPROM Read %d = 0x%02x\n", addr, s->e2p_data);
|
950 |
break;
|
951 |
case 1: |
952 |
s->eeprom_writable = 0;
|
953 |
DPRINTF("EEPROM Write Disable\n");
|
954 |
break;
|
955 |
case 2: /* EWEN */ |
956 |
s->eeprom_writable = 1;
|
957 |
DPRINTF("EEPROM Write Enable\n");
|
958 |
break;
|
959 |
case 3: /* WRITE */ |
960 |
if (s->eeprom_writable) {
|
961 |
s->eeprom[addr] &= s->e2p_data; |
962 |
DPRINTF("EEPROM Write %d = 0x%02x\n", addr, s->e2p_data);
|
963 |
} else {
|
964 |
DPRINTF("EEPROM Write %d (ignored)\n", addr);
|
965 |
} |
966 |
break;
|
967 |
case 4: /* WRAL */ |
968 |
if (s->eeprom_writable) {
|
969 |
for (addr = 0; addr < 128; addr++) { |
970 |
s->eeprom[addr] &= s->e2p_data; |
971 |
} |
972 |
DPRINTF("EEPROM Write All 0x%02x\n", s->e2p_data);
|
973 |
} else {
|
974 |
DPRINTF("EEPROM Write All (ignored)\n");
|
975 |
} |
976 |
break;
|
977 |
case 5: /* ERASE */ |
978 |
if (s->eeprom_writable) {
|
979 |
s->eeprom[addr] = 0xff;
|
980 |
DPRINTF("EEPROM Erase %d\n", addr);
|
981 |
} else {
|
982 |
DPRINTF("EEPROM Erase %d (ignored)\n", addr);
|
983 |
} |
984 |
break;
|
985 |
case 6: /* ERAL */ |
986 |
if (s->eeprom_writable) {
|
987 |
memset(s->eeprom, 0xff, 128); |
988 |
DPRINTF("EEPROM Erase All\n");
|
989 |
} else {
|
990 |
DPRINTF("EEPROM Erase All (ignored)\n");
|
991 |
} |
992 |
break;
|
993 |
case 7: /* RELOAD */ |
994 |
lan9118_reload_eeprom(s); |
995 |
break;
|
996 |
} |
997 |
} |
998 |
|
999 |
static void lan9118_tick(void *opaque) |
1000 |
{ |
1001 |
lan9118_state *s = (lan9118_state *)opaque; |
1002 |
if (s->int_en & GPT_INT) {
|
1003 |
s->int_sts |= GPT_INT; |
1004 |
} |
1005 |
lan9118_update(s); |
1006 |
} |
1007 |
|
1008 |
static void lan9118_writel(void *opaque, hwaddr offset, |
1009 |
uint64_t val, unsigned size)
|
1010 |
{ |
1011 |
lan9118_state *s = (lan9118_state *)opaque; |
1012 |
offset &= 0xff;
|
1013 |
|
1014 |
//DPRINTF("Write reg 0x%02x = 0x%08x\n", (int)offset, val);
|
1015 |
if (offset >= 0x20 && offset < 0x40) { |
1016 |
/* TX FIFO */
|
1017 |
tx_fifo_push(s, val); |
1018 |
return;
|
1019 |
} |
1020 |
switch (offset) {
|
1021 |
case CSR_IRQ_CFG:
|
1022 |
/* TODO: Implement interrupt deassertion intervals. */
|
1023 |
val &= (IRQ_EN | IRQ_POL | IRQ_TYPE); |
1024 |
s->irq_cfg = (s->irq_cfg & IRQ_INT) | val; |
1025 |
break;
|
1026 |
case CSR_INT_STS:
|
1027 |
s->int_sts &= ~val; |
1028 |
break;
|
1029 |
case CSR_INT_EN:
|
1030 |
s->int_en = val & ~RESERVED_INT; |
1031 |
s->int_sts |= val & SW_INT; |
1032 |
break;
|
1033 |
case CSR_FIFO_INT:
|
1034 |
DPRINTF("FIFO INT levels %08x\n", val);
|
1035 |
s->fifo_int = val; |
1036 |
break;
|
1037 |
case CSR_RX_CFG:
|
1038 |
if (val & 0x8000) { |
1039 |
/* RX_DUMP */
|
1040 |
s->rx_fifo_used = 0;
|
1041 |
s->rx_status_fifo_used = 0;
|
1042 |
s->rx_packet_size_tail = s->rx_packet_size_head; |
1043 |
s->rx_packet_size[s->rx_packet_size_head] = 0;
|
1044 |
} |
1045 |
s->rx_cfg = val & 0xcfff1ff0;
|
1046 |
break;
|
1047 |
case CSR_TX_CFG:
|
1048 |
if (val & 0x8000) { |
1049 |
s->tx_status_fifo_used = 0;
|
1050 |
} |
1051 |
if (val & 0x4000) { |
1052 |
s->txp->state = TX_IDLE; |
1053 |
s->txp->fifo_used = 0;
|
1054 |
s->txp->cmd_a = 0xffffffff;
|
1055 |
} |
1056 |
s->tx_cfg = val & 6;
|
1057 |
break;
|
1058 |
case CSR_HW_CFG:
|
1059 |
if (val & 1) { |
1060 |
/* SRST */
|
1061 |
lan9118_reset(DEVICE(s)); |
1062 |
} else {
|
1063 |
s->hw_cfg = (val & 0x003f300) | (s->hw_cfg & 0x4); |
1064 |
} |
1065 |
break;
|
1066 |
case CSR_RX_DP_CTRL:
|
1067 |
if (val & 0x80000000) { |
1068 |
/* Skip forward to next packet. */
|
1069 |
s->rxp_pad = 0;
|
1070 |
s->rxp_offset = 0;
|
1071 |
if (s->rxp_size == 0) { |
1072 |
/* Pop a word to start the next packet. */
|
1073 |
rx_fifo_pop(s); |
1074 |
s->rxp_pad = 0;
|
1075 |
s->rxp_offset = 0;
|
1076 |
} |
1077 |
s->rx_fifo_head += s->rxp_size; |
1078 |
if (s->rx_fifo_head >= s->rx_fifo_size) {
|
1079 |
s->rx_fifo_head -= s->rx_fifo_size; |
1080 |
} |
1081 |
} |
1082 |
break;
|
1083 |
case CSR_PMT_CTRL:
|
1084 |
if (val & 0x400) { |
1085 |
phy_reset(s); |
1086 |
} |
1087 |
s->pmt_ctrl &= ~0x34e;
|
1088 |
s->pmt_ctrl |= (val & 0x34e);
|
1089 |
break;
|
1090 |
case CSR_GPIO_CFG:
|
1091 |
/* Probably just enabling LEDs. */
|
1092 |
s->gpio_cfg = val & 0x7777071f;
|
1093 |
break;
|
1094 |
case CSR_GPT_CFG:
|
1095 |
if ((s->gpt_cfg ^ val) & GPT_TIMER_EN) {
|
1096 |
if (val & GPT_TIMER_EN) {
|
1097 |
ptimer_set_count(s->timer, val & 0xffff);
|
1098 |
ptimer_run(s->timer, 0);
|
1099 |
} else {
|
1100 |
ptimer_stop(s->timer); |
1101 |
ptimer_set_count(s->timer, 0xffff);
|
1102 |
} |
1103 |
} |
1104 |
s->gpt_cfg = val & (GPT_TIMER_EN | 0xffff);
|
1105 |
break;
|
1106 |
case CSR_WORD_SWAP:
|
1107 |
/* Ignored because we're in 32-bit mode. */
|
1108 |
s->word_swap = val; |
1109 |
break;
|
1110 |
case CSR_MAC_CSR_CMD:
|
1111 |
s->mac_cmd = val & 0x4000000f;
|
1112 |
if (val & 0x80000000) { |
1113 |
if (val & 0x40000000) { |
1114 |
s->mac_data = do_mac_read(s, val & 0xf);
|
1115 |
DPRINTF("MAC read %d = 0x%08x\n", val & 0xf, s->mac_data); |
1116 |
} else {
|
1117 |
DPRINTF("MAC write %d = 0x%08x\n", val & 0xf, s->mac_data); |
1118 |
do_mac_write(s, val & 0xf, s->mac_data);
|
1119 |
} |
1120 |
} |
1121 |
break;
|
1122 |
case CSR_MAC_CSR_DATA:
|
1123 |
s->mac_data = val; |
1124 |
break;
|
1125 |
case CSR_AFC_CFG:
|
1126 |
s->afc_cfg = val & 0x00ffffff;
|
1127 |
break;
|
1128 |
case CSR_E2P_CMD:
|
1129 |
lan9118_eeprom_cmd(s, (val >> 28) & 7, val & 0x7f); |
1130 |
break;
|
1131 |
case CSR_E2P_DATA:
|
1132 |
s->e2p_data = val & 0xff;
|
1133 |
break;
|
1134 |
|
1135 |
default:
|
1136 |
hw_error("lan9118_write: Bad reg 0x%x = %x\n", (int)offset, (int)val); |
1137 |
break;
|
1138 |
} |
1139 |
lan9118_update(s); |
1140 |
} |
1141 |
|
1142 |
static void lan9118_writew(void *opaque, hwaddr offset, |
1143 |
uint32_t val) |
1144 |
{ |
1145 |
lan9118_state *s = (lan9118_state *)opaque; |
1146 |
offset &= 0xff;
|
1147 |
|
1148 |
if (s->write_word_prev_offset != (offset & ~0x3)) { |
1149 |
/* New offset, reset word counter */
|
1150 |
s->write_word_n = 0;
|
1151 |
s->write_word_prev_offset = offset & ~0x3;
|
1152 |
} |
1153 |
|
1154 |
if (offset & 0x2) { |
1155 |
s->write_word_h = val; |
1156 |
} else {
|
1157 |
s->write_word_l = val; |
1158 |
} |
1159 |
|
1160 |
//DPRINTF("Writew reg 0x%02x = 0x%08x\n", (int)offset, val);
|
1161 |
s->write_word_n++; |
1162 |
if (s->write_word_n == 2) { |
1163 |
s->write_word_n = 0;
|
1164 |
lan9118_writel(s, offset & ~3, s->write_word_l +
|
1165 |
(s->write_word_h << 16), 4); |
1166 |
} |
1167 |
} |
1168 |
|
1169 |
static void lan9118_16bit_mode_write(void *opaque, hwaddr offset, |
1170 |
uint64_t val, unsigned size)
|
1171 |
{ |
1172 |
switch (size) {
|
1173 |
case 2: |
1174 |
lan9118_writew(opaque, offset, (uint32_t)val); |
1175 |
return;
|
1176 |
case 4: |
1177 |
lan9118_writel(opaque, offset, val, size); |
1178 |
return;
|
1179 |
} |
1180 |
|
1181 |
hw_error("lan9118_write: Bad size 0x%x\n", size);
|
1182 |
} |
1183 |
|
1184 |
static uint64_t lan9118_readl(void *opaque, hwaddr offset, |
1185 |
unsigned size)
|
1186 |
{ |
1187 |
lan9118_state *s = (lan9118_state *)opaque; |
1188 |
|
1189 |
//DPRINTF("Read reg 0x%02x\n", (int)offset);
|
1190 |
if (offset < 0x20) { |
1191 |
/* RX FIFO */
|
1192 |
return rx_fifo_pop(s);
|
1193 |
} |
1194 |
switch (offset) {
|
1195 |
case 0x40: |
1196 |
return rx_status_fifo_pop(s);
|
1197 |
case 0x44: |
1198 |
return s->rx_status_fifo[s->tx_status_fifo_head];
|
1199 |
case 0x48: |
1200 |
return tx_status_fifo_pop(s);
|
1201 |
case 0x4c: |
1202 |
return s->tx_status_fifo[s->tx_status_fifo_head];
|
1203 |
case CSR_ID_REV:
|
1204 |
return 0x01180001; |
1205 |
case CSR_IRQ_CFG:
|
1206 |
return s->irq_cfg;
|
1207 |
case CSR_INT_STS:
|
1208 |
return s->int_sts;
|
1209 |
case CSR_INT_EN:
|
1210 |
return s->int_en;
|
1211 |
case CSR_BYTE_TEST:
|
1212 |
return 0x87654321; |
1213 |
case CSR_FIFO_INT:
|
1214 |
return s->fifo_int;
|
1215 |
case CSR_RX_CFG:
|
1216 |
return s->rx_cfg;
|
1217 |
case CSR_TX_CFG:
|
1218 |
return s->tx_cfg;
|
1219 |
case CSR_HW_CFG:
|
1220 |
return s->hw_cfg;
|
1221 |
case CSR_RX_DP_CTRL:
|
1222 |
return 0; |
1223 |
case CSR_RX_FIFO_INF:
|
1224 |
return (s->rx_status_fifo_used << 16) | (s->rx_fifo_used << 2); |
1225 |
case CSR_TX_FIFO_INF:
|
1226 |
return (s->tx_status_fifo_used << 16) |
1227 |
| (s->tx_fifo_size - s->txp->fifo_used); |
1228 |
case CSR_PMT_CTRL:
|
1229 |
return s->pmt_ctrl;
|
1230 |
case CSR_GPIO_CFG:
|
1231 |
return s->gpio_cfg;
|
1232 |
case CSR_GPT_CFG:
|
1233 |
return s->gpt_cfg;
|
1234 |
case CSR_GPT_CNT:
|
1235 |
return ptimer_get_count(s->timer);
|
1236 |
case CSR_WORD_SWAP:
|
1237 |
return s->word_swap;
|
1238 |
case CSR_FREE_RUN:
|
1239 |
return (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 40) - s->free_timer_start; |
1240 |
case CSR_RX_DROP:
|
1241 |
/* TODO: Implement dropped frames counter. */
|
1242 |
return 0; |
1243 |
case CSR_MAC_CSR_CMD:
|
1244 |
return s->mac_cmd;
|
1245 |
case CSR_MAC_CSR_DATA:
|
1246 |
return s->mac_data;
|
1247 |
case CSR_AFC_CFG:
|
1248 |
return s->afc_cfg;
|
1249 |
case CSR_E2P_CMD:
|
1250 |
return s->e2p_cmd;
|
1251 |
case CSR_E2P_DATA:
|
1252 |
return s->e2p_data;
|
1253 |
} |
1254 |
hw_error("lan9118_read: Bad reg 0x%x\n", (int)offset); |
1255 |
return 0; |
1256 |
} |
1257 |
|
1258 |
static uint32_t lan9118_readw(void *opaque, hwaddr offset) |
1259 |
{ |
1260 |
lan9118_state *s = (lan9118_state *)opaque; |
1261 |
uint32_t val; |
1262 |
|
1263 |
if (s->read_word_prev_offset != (offset & ~0x3)) { |
1264 |
/* New offset, reset word counter */
|
1265 |
s->read_word_n = 0;
|
1266 |
s->read_word_prev_offset = offset & ~0x3;
|
1267 |
} |
1268 |
|
1269 |
s->read_word_n++; |
1270 |
if (s->read_word_n == 1) { |
1271 |
s->read_long = lan9118_readl(s, offset & ~3, 4); |
1272 |
} else {
|
1273 |
s->read_word_n = 0;
|
1274 |
} |
1275 |
|
1276 |
if (offset & 2) { |
1277 |
val = s->read_long >> 16;
|
1278 |
} else {
|
1279 |
val = s->read_long & 0xFFFF;
|
1280 |
} |
1281 |
|
1282 |
//DPRINTF("Readw reg 0x%02x, val 0x%x\n", (int)offset, val);
|
1283 |
return val;
|
1284 |
} |
1285 |
|
1286 |
static uint64_t lan9118_16bit_mode_read(void *opaque, hwaddr offset, |
1287 |
unsigned size)
|
1288 |
{ |
1289 |
switch (size) {
|
1290 |
case 2: |
1291 |
return lan9118_readw(opaque, offset);
|
1292 |
case 4: |
1293 |
return lan9118_readl(opaque, offset, size);
|
1294 |
} |
1295 |
|
1296 |
hw_error("lan9118_read: Bad size 0x%x\n", size);
|
1297 |
return 0; |
1298 |
} |
1299 |
|
1300 |
static const MemoryRegionOps lan9118_mem_ops = { |
1301 |
.read = lan9118_readl, |
1302 |
.write = lan9118_writel, |
1303 |
.endianness = DEVICE_NATIVE_ENDIAN, |
1304 |
}; |
1305 |
|
1306 |
static const MemoryRegionOps lan9118_16bit_mem_ops = { |
1307 |
.read = lan9118_16bit_mode_read, |
1308 |
.write = lan9118_16bit_mode_write, |
1309 |
.endianness = DEVICE_NATIVE_ENDIAN, |
1310 |
}; |
1311 |
|
1312 |
static void lan9118_cleanup(NetClientState *nc) |
1313 |
{ |
1314 |
lan9118_state *s = qemu_get_nic_opaque(nc); |
1315 |
|
1316 |
s->nic = NULL;
|
1317 |
} |
1318 |
|
1319 |
static NetClientInfo net_lan9118_info = {
|
1320 |
.type = NET_CLIENT_OPTIONS_KIND_NIC, |
1321 |
.size = sizeof(NICState),
|
1322 |
.can_receive = lan9118_can_receive, |
1323 |
.receive = lan9118_receive, |
1324 |
.cleanup = lan9118_cleanup, |
1325 |
.link_status_changed = lan9118_set_link, |
1326 |
}; |
1327 |
|
1328 |
static int lan9118_init1(SysBusDevice *sbd) |
1329 |
{ |
1330 |
DeviceState *dev = DEVICE(sbd); |
1331 |
lan9118_state *s = LAN9118(dev); |
1332 |
QEMUBH *bh; |
1333 |
int i;
|
1334 |
const MemoryRegionOps *mem_ops =
|
1335 |
s->mode_16bit ? &lan9118_16bit_mem_ops : &lan9118_mem_ops; |
1336 |
|
1337 |
memory_region_init_io(&s->mmio, OBJECT(dev), mem_ops, s, |
1338 |
"lan9118-mmio", 0x100); |
1339 |
sysbus_init_mmio(sbd, &s->mmio); |
1340 |
sysbus_init_irq(sbd, &s->irq); |
1341 |
qemu_macaddr_default_if_unset(&s->conf.macaddr); |
1342 |
|
1343 |
s->nic = qemu_new_nic(&net_lan9118_info, &s->conf, |
1344 |
object_get_typename(OBJECT(dev)), dev->id, s); |
1345 |
qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); |
1346 |
s->eeprom[0] = 0xa5; |
1347 |
for (i = 0; i < 6; i++) { |
1348 |
s->eeprom[i + 1] = s->conf.macaddr.a[i];
|
1349 |
} |
1350 |
s->pmt_ctrl = 1;
|
1351 |
s->txp = &s->tx_packet; |
1352 |
|
1353 |
bh = qemu_bh_new(lan9118_tick, s); |
1354 |
s->timer = ptimer_init(bh); |
1355 |
ptimer_set_freq(s->timer, 10000);
|
1356 |
ptimer_set_limit(s->timer, 0xffff, 1); |
1357 |
|
1358 |
return 0; |
1359 |
} |
1360 |
|
1361 |
static Property lan9118_properties[] = {
|
1362 |
DEFINE_NIC_PROPERTIES(lan9118_state, conf), |
1363 |
DEFINE_PROP_UINT32("mode_16bit", lan9118_state, mode_16bit, 0), |
1364 |
DEFINE_PROP_END_OF_LIST(), |
1365 |
}; |
1366 |
|
1367 |
static void lan9118_class_init(ObjectClass *klass, void *data) |
1368 |
{ |
1369 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1370 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
1371 |
|
1372 |
k->init = lan9118_init1; |
1373 |
dc->reset = lan9118_reset; |
1374 |
dc->props = lan9118_properties; |
1375 |
dc->vmsd = &vmstate_lan9118; |
1376 |
} |
1377 |
|
1378 |
static const TypeInfo lan9118_info = { |
1379 |
.name = TYPE_LAN9118, |
1380 |
.parent = TYPE_SYS_BUS_DEVICE, |
1381 |
.instance_size = sizeof(lan9118_state),
|
1382 |
.class_init = lan9118_class_init, |
1383 |
}; |
1384 |
|
1385 |
static void lan9118_register_types(void) |
1386 |
{ |
1387 |
type_register_static(&lan9118_info); |
1388 |
} |
1389 |
|
1390 |
/* Legacy helper function. Should go away when machine config files are
|
1391 |
implemented. */
|
1392 |
void lan9118_init(NICInfo *nd, uint32_t base, qemu_irq irq)
|
1393 |
{ |
1394 |
DeviceState *dev; |
1395 |
SysBusDevice *s; |
1396 |
|
1397 |
qemu_check_nic_model(nd, "lan9118");
|
1398 |
dev = qdev_create(NULL, TYPE_LAN9118);
|
1399 |
qdev_set_nic_properties(dev, nd); |
1400 |
qdev_init_nofail(dev); |
1401 |
s = SYS_BUS_DEVICE(dev); |
1402 |
sysbus_mmio_map(s, 0, base);
|
1403 |
sysbus_connect_irq(s, 0, irq);
|
1404 |
} |
1405 |
|
1406 |
type_init(lan9118_register_types) |