| /* MOXA ART Ethernet (RTL8201CP) driver. |
| * |
| * Copyright (C) 2013 Jonas Jensen |
| * |
| * Jonas Jensen <jonas.jensen@gmail.com> |
| * |
| * Based on code from |
| * Moxa Technology Co., Ltd. <www.moxa.com> |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| |
| #ifndef _MOXART_ETHERNET_H |
| #define _MOXART_ETHERNET_H |
| |
| #define TX_REG_OFFSET_DESC0 0 |
| #define TX_REG_OFFSET_DESC1 4 |
| #define TX_REG_OFFSET_DESC2 8 |
| #define TX_REG_DESC_SIZE 16 |
| |
| #define RX_REG_OFFSET_DESC0 0 |
| #define RX_REG_OFFSET_DESC1 4 |
| #define RX_REG_OFFSET_DESC2 8 |
| #define RX_REG_DESC_SIZE 16 |
| |
| #define TX_DESC0_PKT_LATE_COL 0x1 /* abort, late collision */ |
| #define TX_DESC0_RX_PKT_EXS_COL 0x2 /* abort, >16 collisions */ |
| #define TX_DESC0_DMA_OWN 0x80000000 /* owned by controller */ |
| #define TX_DESC1_BUF_SIZE_MASK 0x7ff |
| #define TX_DESC1_LTS 0x8000000 /* last TX packet */ |
| #define TX_DESC1_FTS 0x10000000 /* first TX packet */ |
| #define TX_DESC1_FIFO_COMPLETE 0x20000000 |
| #define TX_DESC1_INTR_COMPLETE 0x40000000 |
| #define TX_DESC1_END 0x80000000 |
| #define TX_DESC2_ADDRESS_PHYS 0 |
| #define TX_DESC2_ADDRESS_VIRT 4 |
| |
| #define RX_DESC0_FRAME_LEN 0 |
| #define RX_DESC0_FRAME_LEN_MASK 0x7FF |
| #define RX_DESC0_MULTICAST 0x10000 |
| #define RX_DESC0_BROADCAST 0x20000 |
| #define RX_DESC0_ERR 0x40000 |
| #define RX_DESC0_CRC_ERR 0x80000 |
| #define RX_DESC0_FTL 0x100000 |
| #define RX_DESC0_RUNT 0x200000 /* packet less than 64 bytes */ |
| #define RX_DESC0_ODD_NB 0x400000 /* receive odd nibbles */ |
| #define RX_DESC0_LRS 0x10000000 /* last receive segment */ |
| #define RX_DESC0_FRS 0x20000000 /* first receive segment */ |
| #define RX_DESC0_DMA_OWN 0x80000000 |
| #define RX_DESC1_BUF_SIZE_MASK 0x7FF |
| #define RX_DESC1_END 0x80000000 |
| #define RX_DESC2_ADDRESS_PHYS 0 |
| #define RX_DESC2_ADDRESS_VIRT 4 |
| |
| #define TX_DESC_NUM 64 |
| #define TX_DESC_NUM_MASK (TX_DESC_NUM - 1) |
| #define TX_NEXT(N) (((N) + 1) & (TX_DESC_NUM_MASK)) |
| #define TX_BUF_SIZE 1600 |
| #define TX_BUF_SIZE_MAX (TX_DESC1_BUF_SIZE_MASK + 1) |
| #define TX_WAKE_THRESHOLD 16 |
| |
| #define RX_DESC_NUM 64 |
| #define RX_DESC_NUM_MASK (RX_DESC_NUM - 1) |
| #define RX_NEXT(N) (((N) + 1) & (RX_DESC_NUM_MASK)) |
| #define RX_BUF_SIZE 1600 |
| #define RX_BUF_SIZE_MAX (RX_DESC1_BUF_SIZE_MASK + 1) |
| |
| #define REG_INTERRUPT_STATUS 0 |
| #define REG_INTERRUPT_MASK 4 |
| #define REG_MAC_MS_ADDRESS 8 |
| #define REG_MAC_LS_ADDRESS 12 |
| #define REG_MCAST_HASH_TABLE0 16 |
| #define REG_MCAST_HASH_TABLE1 20 |
| #define REG_TX_POLL_DEMAND 24 |
| #define REG_RX_POLL_DEMAND 28 |
| #define REG_TXR_BASE_ADDRESS 32 |
| #define REG_RXR_BASE_ADDRESS 36 |
| #define REG_INT_TIMER_CTRL 40 |
| #define REG_APOLL_TIMER_CTRL 44 |
| #define REG_DMA_BLEN_CTRL 48 |
| #define REG_RESERVED1 52 |
| #define REG_MAC_CTRL 136 |
| #define REG_MAC_STATUS 140 |
| #define REG_PHY_CTRL 144 |
| #define REG_PHY_WRITE_DATA 148 |
| #define REG_FLOW_CTRL 152 |
| #define REG_BACK_PRESSURE 156 |
| #define REG_RESERVED2 160 |
| #define REG_TEST_SEED 196 |
| #define REG_DMA_FIFO_STATE 200 |
| #define REG_TEST_MODE 204 |
| #define REG_RESERVED3 208 |
| #define REG_TX_COL_COUNTER 212 |
| #define REG_RPF_AEP_COUNTER 216 |
| #define REG_XM_PG_COUNTER 220 |
| #define REG_RUNT_TLC_COUNTER 224 |
| #define REG_CRC_FTL_COUNTER 228 |
| #define REG_RLC_RCC_COUNTER 232 |
| #define REG_BROC_COUNTER 236 |
| #define REG_MULCA_COUNTER 240 |
| #define REG_RP_COUNTER 244 |
| #define REG_XP_COUNTER 248 |
| |
| #define REG_PHY_CTRL_OFFSET 0x0 |
| #define REG_PHY_STATUS 0x1 |
| #define REG_PHY_ID1 0x2 |
| #define REG_PHY_ID2 0x3 |
| #define REG_PHY_ANA 0x4 |
| #define REG_PHY_ANLPAR 0x5 |
| #define REG_PHY_ANE 0x6 |
| #define REG_PHY_ECTRL1 0x10 |
| #define REG_PHY_QPDS 0x11 |
| #define REG_PHY_10BOP 0x12 |
| #define REG_PHY_ECTRL2 0x13 |
| #define REG_PHY_FTMAC100_WRITE 0x8000000 |
| #define REG_PHY_FTMAC100_READ 0x4000000 |
| |
| /* REG_INTERRUPT_STATUS */ |
| #define RPKT_FINISH BIT(0) /* DMA data received */ |
| #define NORXBUF BIT(1) /* receive buffer unavailable */ |
| #define XPKT_FINISH BIT(2) /* DMA moved data to TX FIFO */ |
| #define NOTXBUF BIT(3) /* transmit buffer unavailable */ |
| #define XPKT_OK_INT_STS BIT(4) /* transmit to ethernet success */ |
| #define XPKT_LOST_INT_STS BIT(5) /* transmit ethernet lost (collision) */ |
| #define RPKT_SAV BIT(6) /* FIFO receive success */ |
| #define RPKT_LOST_INT_STS BIT(7) /* FIFO full, receive failed */ |
| #define AHB_ERR BIT(8) /* AHB error */ |
| #define PHYSTS_CHG BIT(9) /* PHY link status change */ |
| |
| /* REG_INTERRUPT_MASK */ |
| #define RPKT_FINISH_M BIT(0) |
| #define NORXBUF_M BIT(1) |
| #define XPKT_FINISH_M BIT(2) |
| #define NOTXBUF_M BIT(3) |
| #define XPKT_OK_M BIT(4) |
| #define XPKT_LOST_M BIT(5) |
| #define RPKT_SAV_M BIT(6) |
| #define RPKT_LOST_M BIT(7) |
| #define AHB_ERR_M BIT(8) |
| #define PHYSTS_CHG_M BIT(9) |
| |
| /* REG_MAC_MS_ADDRESS */ |
| #define MAC_MADR_MASK 0xffff /* 2 MSB MAC address */ |
| |
| /* REG_INT_TIMER_CTRL */ |
| #define TXINT_TIME_SEL BIT(15) /* TX cycle time period */ |
| #define TXINT_THR_MASK 0x7000 |
| #define TXINT_CNT_MASK 0xf00 |
| #define RXINT_TIME_SEL BIT(7) /* RX cycle time period */ |
| #define RXINT_THR_MASK 0x70 |
| #define RXINT_CNT_MASK 0xF |
| |
| /* REG_APOLL_TIMER_CTRL */ |
| #define TXPOLL_TIME_SEL BIT(12) /* TX poll time period */ |
| #define TXPOLL_CNT_MASK 0xf00 |
| #define TXPOLL_CNT_SHIFT_BIT 8 |
| #define RXPOLL_TIME_SEL BIT(4) /* RX poll time period */ |
| #define RXPOLL_CNT_MASK 0xF |
| #define RXPOLL_CNT_SHIFT_BIT 0 |
| |
| /* REG_DMA_BLEN_CTRL */ |
| #define RX_THR_EN BIT(9) /* RX FIFO threshold arbitration */ |
| #define RXFIFO_HTHR_MASK 0x1c0 |
| #define RXFIFO_LTHR_MASK 0x38 |
| #define INCR16_EN BIT(2) /* AHB bus INCR16 burst command */ |
| #define INCR8_EN BIT(1) /* AHB bus INCR8 burst command */ |
| #define INCR4_EN BIT(0) /* AHB bus INCR4 burst command */ |
| |
| /* REG_MAC_CTRL */ |
| #define RX_BROADPKT BIT(17) /* receive broadcast packets */ |
| #define RX_MULTIPKT BIT(16) /* receive all multicast packets */ |
| #define FULLDUP BIT(15) /* full duplex */ |
| #define CRC_APD BIT(14) /* append CRC to transmitted packet */ |
| #define RCV_ALL BIT(12) /* ignore incoming packet destination */ |
| #define RX_FTL BIT(11) /* accept packets larger than 1518 B */ |
| #define RX_RUNT BIT(10) /* accept packets smaller than 64 B */ |
| #define HT_MULTI_EN BIT(9) /* accept on hash and mcast pass */ |
| #define RCV_EN BIT(8) /* receiver enable */ |
| #define ENRX_IN_HALFTX BIT(6) /* enable receive in half duplex mode */ |
| #define XMT_EN BIT(5) /* transmit enable */ |
| #define CRC_DIS BIT(4) /* disable CRC check when receiving */ |
| #define LOOP_EN BIT(3) /* internal loop-back */ |
| #define SW_RST BIT(2) /* software reset, last 64 AHB clocks */ |
| #define RDMA_EN BIT(1) /* enable receive DMA chan */ |
| #define XDMA_EN BIT(0) /* enable transmit DMA chan */ |
| |
| /* REG_MAC_STATUS */ |
| #define COL_EXCEED BIT(11) /* more than 16 collisions */ |
| #define LATE_COL BIT(10) /* transmit late collision detected */ |
| #define XPKT_LOST BIT(9) /* transmit to ethernet lost */ |
| #define XPKT_OK BIT(8) /* transmit to ethernet success */ |
| #define RUNT_MAC_STS BIT(7) /* receive runt detected */ |
| #define FTL_MAC_STS BIT(6) /* receive frame too long detected */ |
| #define CRC_ERR_MAC_STS BIT(5) |
| #define RPKT_LOST BIT(4) /* RX FIFO full, receive failed */ |
| #define RPKT_SAVE BIT(3) /* RX FIFO receive success */ |
| #define COL BIT(2) /* collision, incoming packet dropped */ |
| #define MCPU_BROADCAST BIT(1) |
| #define MCPU_MULTICAST BIT(0) |
| |
| /* REG_PHY_CTRL */ |
| #define MIIWR BIT(27) /* init write sequence (auto cleared)*/ |
| #define MIIRD BIT(26) |
| #define REGAD_MASK 0x3e00000 |
| #define PHYAD_MASK 0x1f0000 |
| #define MIIRDATA_MASK 0xffff |
| |
| /* REG_PHY_WRITE_DATA */ |
| #define MIIWDATA_MASK 0xffff |
| |
| /* REG_FLOW_CTRL */ |
| #define PAUSE_TIME_MASK 0xffff0000 |
| #define FC_HIGH_MASK 0xf000 |
| #define FC_LOW_MASK 0xf00 |
| #define RX_PAUSE BIT(4) /* receive pause frame */ |
| #define TX_PAUSED BIT(3) /* transmit pause due to receive */ |
| #define FCTHR_EN BIT(2) /* enable threshold mode. */ |
| #define TX_PAUSE BIT(1) /* transmit pause frame */ |
| #define FC_EN BIT(0) /* flow control mode enable */ |
| |
| /* REG_BACK_PRESSURE */ |
| #define BACKP_LOW_MASK 0xf00 |
| #define BACKP_JAM_LEN_MASK 0xf0 |
| #define BACKP_MODE BIT(1) /* address mode */ |
| #define BACKP_ENABLE BIT(0) |
| |
| /* REG_TEST_SEED */ |
| #define TEST_SEED_MASK 0x3fff |
| |
| /* REG_DMA_FIFO_STATE */ |
| #define TX_DMA_REQUEST BIT(31) |
| #define RX_DMA_REQUEST BIT(30) |
| #define TX_DMA_GRANT BIT(29) |
| #define RX_DMA_GRANT BIT(28) |
| #define TX_FIFO_EMPTY BIT(27) |
| #define RX_FIFO_EMPTY BIT(26) |
| #define TX_DMA2_SM_MASK 0x7000 |
| #define TX_DMA1_SM_MASK 0xf00 |
| #define RX_DMA2_SM_MASK 0x70 |
| #define RX_DMA1_SM_MASK 0xF |
| |
| /* REG_TEST_MODE */ |
| #define SINGLE_PKT BIT(26) /* single packet mode */ |
| #define PTIMER_TEST BIT(25) /* automatic polling timer test mode */ |
| #define ITIMER_TEST BIT(24) /* interrupt timer test mode */ |
| #define TEST_SEED_SELECT BIT(22) |
| #define SEED_SELECT BIT(21) |
| #define TEST_MODE BIT(20) |
| #define TEST_TIME_MASK 0xffc00 |
| #define TEST_EXCEL_MASK 0x3e0 |
| |
| /* REG_TX_COL_COUNTER */ |
| #define TX_MCOL_MASK 0xffff0000 |
| #define TX_MCOL_SHIFT_BIT 16 |
| #define TX_SCOL_MASK 0xffff |
| #define TX_SCOL_SHIFT_BIT 0 |
| |
| /* REG_RPF_AEP_COUNTER */ |
| #define RPF_MASK 0xffff0000 |
| #define RPF_SHIFT_BIT 16 |
| #define AEP_MASK 0xffff |
| #define AEP_SHIFT_BIT 0 |
| |
| /* REG_XM_PG_COUNTER */ |
| #define XM_MASK 0xffff0000 |
| #define XM_SHIFT_BIT 16 |
| #define PG_MASK 0xffff |
| #define PG_SHIFT_BIT 0 |
| |
| /* REG_RUNT_TLC_COUNTER */ |
| #define RUNT_CNT_MASK 0xffff0000 |
| #define RUNT_CNT_SHIFT_BIT 16 |
| #define TLCC_MASK 0xffff |
| #define TLCC_SHIFT_BIT 0 |
| |
| /* REG_CRC_FTL_COUNTER */ |
| #define CRCER_CNT_MASK 0xffff0000 |
| #define CRCER_CNT_SHIFT_BIT 16 |
| #define FTL_CNT_MASK 0xffff |
| #define FTL_CNT_SHIFT_BIT 0 |
| |
| /* REG_RLC_RCC_COUNTER */ |
| #define RLC_MASK 0xffff0000 |
| #define RLC_SHIFT_BIT 16 |
| #define RCC_MASK 0xffff |
| #define RCC_SHIFT_BIT 0 |
| |
| /* REG_PHY_STATUS */ |
| #define AN_COMPLETE 0x20 |
| #define LINK_STATUS 0x4 |
| |
| struct moxart_mac_priv_t { |
| void __iomem *base; |
| unsigned int reg_maccr; |
| unsigned int reg_imr; |
| struct napi_struct napi; |
| struct net_device *ndev; |
| |
| dma_addr_t rx_base; |
| dma_addr_t rx_mapping[RX_DESC_NUM]; |
| void *rx_desc_base; |
| unsigned char *rx_buf_base; |
| unsigned char *rx_buf[RX_DESC_NUM]; |
| unsigned int rx_head; |
| unsigned int rx_buf_size; |
| |
| dma_addr_t tx_base; |
| dma_addr_t tx_mapping[TX_DESC_NUM]; |
| void *tx_desc_base; |
| unsigned char *tx_buf_base; |
| unsigned char *tx_buf[RX_DESC_NUM]; |
| unsigned int tx_head; |
| unsigned int tx_buf_size; |
| |
| spinlock_t txlock; |
| unsigned int tx_len[TX_DESC_NUM]; |
| struct sk_buff *tx_skb[TX_DESC_NUM]; |
| unsigned int tx_tail; |
| }; |
| |
| #if TX_BUF_SIZE >= TX_BUF_SIZE_MAX |
| #error MOXA ART Ethernet device driver TX buffer is too large! |
| #endif |
| #if RX_BUF_SIZE >= RX_BUF_SIZE_MAX |
| #error MOXA ART Ethernet device driver RX buffer is too large! |
| #endif |
| |
| #endif |
