| /* This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org> |
| * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org> |
| * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com> |
| */ |
| |
| #ifndef MTK_ETH_H |
| #define MTK_ETH_H |
| |
| #define MTK_QDMA_PAGE_SIZE 2048 |
| #define MTK_MAX_RX_LENGTH 1536 |
| #define MTK_TX_DMA_BUF_LEN 0x3fff |
| #define MTK_DMA_SIZE 256 |
| #define MTK_NAPI_WEIGHT 64 |
| #define MTK_MAC_COUNT 2 |
| #define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN) |
| #define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN) |
| #define MTK_DMA_DUMMY_DESC 0xffffffff |
| #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ |
| NETIF_MSG_PROBE | \ |
| NETIF_MSG_LINK | \ |
| NETIF_MSG_TIMER | \ |
| NETIF_MSG_IFDOWN | \ |
| NETIF_MSG_IFUP | \ |
| NETIF_MSG_RX_ERR | \ |
| NETIF_MSG_TX_ERR) |
| #define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \ |
| NETIF_F_RXCSUM | \ |
| NETIF_F_HW_VLAN_CTAG_TX | \ |
| NETIF_F_HW_VLAN_CTAG_RX | \ |
| NETIF_F_SG | NETIF_F_TSO | \ |
| NETIF_F_TSO6 | \ |
| NETIF_F_IPV6_CSUM) |
| #define NEXT_RX_DESP_IDX(X, Y) (((X) + 1) & ((Y) - 1)) |
| |
| #define MTK_MAX_RX_RING_NUM 4 |
| #define MTK_HW_LRO_DMA_SIZE 8 |
| |
| #define MTK_MAX_LRO_RX_LENGTH (4096 * 3) |
| #define MTK_MAX_LRO_IP_CNT 2 |
| #define MTK_HW_LRO_TIMER_UNIT 1 /* 20 us */ |
| #define MTK_HW_LRO_REFRESH_TIME 50000 /* 1 sec. */ |
| #define MTK_HW_LRO_AGG_TIME 10 /* 200us */ |
| #define MTK_HW_LRO_AGE_TIME 50 /* 1ms */ |
| #define MTK_HW_LRO_MAX_AGG_CNT 64 |
| #define MTK_HW_LRO_BW_THRE 3000 |
| #define MTK_HW_LRO_REPLACE_DELTA 1000 |
| #define MTK_HW_LRO_SDL_REMAIN_ROOM 1522 |
| |
| /* Frame Engine Global Reset Register */ |
| #define MTK_RST_GL 0x04 |
| #define RST_GL_PSE BIT(0) |
| |
| /* Frame Engine Interrupt Status Register */ |
| #define MTK_INT_STATUS2 0x08 |
| #define MTK_GDM1_AF BIT(28) |
| #define MTK_GDM2_AF BIT(29) |
| |
| /* PDMA HW LRO Alter Flow Timer Register */ |
| #define MTK_PDMA_LRO_ALT_REFRESH_TIMER 0x1c |
| |
| /* Frame Engine Interrupt Grouping Register */ |
| #define MTK_FE_INT_GRP 0x20 |
| |
| /* CDMP Exgress Control Register */ |
| #define MTK_CDMP_EG_CTRL 0x404 |
| |
| /* GDM Exgress Control Register */ |
| #define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000)) |
| #define MTK_GDMA_ICS_EN BIT(22) |
| #define MTK_GDMA_TCS_EN BIT(21) |
| #define MTK_GDMA_UCS_EN BIT(20) |
| |
| /* Unicast Filter MAC Address Register - Low */ |
| #define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000)) |
| |
| /* Unicast Filter MAC Address Register - High */ |
| #define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000)) |
| |
| /* PDMA RX Base Pointer Register */ |
| #define MTK_PRX_BASE_PTR0 0x900 |
| #define MTK_PRX_BASE_PTR_CFG(x) (MTK_PRX_BASE_PTR0 + (x * 0x10)) |
| |
| /* PDMA RX Maximum Count Register */ |
| #define MTK_PRX_MAX_CNT0 0x904 |
| #define MTK_PRX_MAX_CNT_CFG(x) (MTK_PRX_MAX_CNT0 + (x * 0x10)) |
| |
| /* PDMA RX CPU Pointer Register */ |
| #define MTK_PRX_CRX_IDX0 0x908 |
| #define MTK_PRX_CRX_IDX_CFG(x) (MTK_PRX_CRX_IDX0 + (x * 0x10)) |
| |
| /* PDMA HW LRO Control Registers */ |
| #define MTK_PDMA_LRO_CTRL_DW0 0x980 |
| #define MTK_LRO_EN BIT(0) |
| #define MTK_L3_CKS_UPD_EN BIT(7) |
| #define MTK_LRO_ALT_PKT_CNT_MODE BIT(21) |
| #define MTK_LRO_RING_RELINQUISH_REQ (0x7 << 26) |
| #define MTK_LRO_RING_RELINQUISH_DONE (0x7 << 29) |
| |
| #define MTK_PDMA_LRO_CTRL_DW1 0x984 |
| #define MTK_PDMA_LRO_CTRL_DW2 0x988 |
| #define MTK_PDMA_LRO_CTRL_DW3 0x98c |
| #define MTK_ADMA_MODE BIT(15) |
| #define MTK_LRO_MIN_RXD_SDL (MTK_HW_LRO_SDL_REMAIN_ROOM << 16) |
| |
| /* PDMA Global Configuration Register */ |
| #define MTK_PDMA_GLO_CFG 0xa04 |
| #define MTK_MULTI_EN BIT(10) |
| |
| /* PDMA Reset Index Register */ |
| #define MTK_PDMA_RST_IDX 0xa08 |
| #define MTK_PST_DRX_IDX0 BIT(16) |
| #define MTK_PST_DRX_IDX_CFG(x) (MTK_PST_DRX_IDX0 << (x)) |
| |
| /* PDMA Delay Interrupt Register */ |
| #define MTK_PDMA_DELAY_INT 0xa0c |
| |
| /* PDMA Interrupt Status Register */ |
| #define MTK_PDMA_INT_STATUS 0xa20 |
| |
| /* PDMA Interrupt Mask Register */ |
| #define MTK_PDMA_INT_MASK 0xa28 |
| |
| /* PDMA HW LRO Alter Flow Delta Register */ |
| #define MTK_PDMA_LRO_ALT_SCORE_DELTA 0xa4c |
| |
| /* PDMA Interrupt grouping registers */ |
| #define MTK_PDMA_INT_GRP1 0xa50 |
| #define MTK_PDMA_INT_GRP2 0xa54 |
| |
| /* PDMA HW LRO IP Setting Registers */ |
| #define MTK_LRO_RX_RING0_DIP_DW0 0xb04 |
| #define MTK_LRO_DIP_DW0_CFG(x) (MTK_LRO_RX_RING0_DIP_DW0 + (x * 0x40)) |
| #define MTK_RING_MYIP_VLD BIT(9) |
| |
| /* PDMA HW LRO Ring Control Registers */ |
| #define MTK_LRO_RX_RING0_CTRL_DW1 0xb28 |
| #define MTK_LRO_RX_RING0_CTRL_DW2 0xb2c |
| #define MTK_LRO_RX_RING0_CTRL_DW3 0xb30 |
| #define MTK_LRO_CTRL_DW1_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW1 + (x * 0x40)) |
| #define MTK_LRO_CTRL_DW2_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW2 + (x * 0x40)) |
| #define MTK_LRO_CTRL_DW3_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW3 + (x * 0x40)) |
| #define MTK_RING_AGE_TIME_L ((MTK_HW_LRO_AGE_TIME & 0x3ff) << 22) |
| #define MTK_RING_AGE_TIME_H ((MTK_HW_LRO_AGE_TIME >> 10) & 0x3f) |
| #define MTK_RING_AUTO_LERAN_MODE (3 << 6) |
| #define MTK_RING_VLD BIT(8) |
| #define MTK_RING_MAX_AGG_TIME ((MTK_HW_LRO_AGG_TIME & 0xffff) << 10) |
| #define MTK_RING_MAX_AGG_CNT_L ((MTK_HW_LRO_MAX_AGG_CNT & 0x3f) << 26) |
| #define MTK_RING_MAX_AGG_CNT_H ((MTK_HW_LRO_MAX_AGG_CNT >> 6) & 0x3) |
| |
| /* QDMA TX Queue Configuration Registers */ |
| #define MTK_QTX_CFG(x) (0x1800 + (x * 0x10)) |
| #define QDMA_RES_THRES 4 |
| |
| /* QDMA TX Queue Scheduler Registers */ |
| #define MTK_QTX_SCH(x) (0x1804 + (x * 0x10)) |
| |
| /* QDMA RX Base Pointer Register */ |
| #define MTK_QRX_BASE_PTR0 0x1900 |
| |
| /* QDMA RX Maximum Count Register */ |
| #define MTK_QRX_MAX_CNT0 0x1904 |
| |
| /* QDMA RX CPU Pointer Register */ |
| #define MTK_QRX_CRX_IDX0 0x1908 |
| |
| /* QDMA RX DMA Pointer Register */ |
| #define MTK_QRX_DRX_IDX0 0x190C |
| |
| /* QDMA Global Configuration Register */ |
| #define MTK_QDMA_GLO_CFG 0x1A04 |
| #define MTK_RX_2B_OFFSET BIT(31) |
| #define MTK_RX_BT_32DWORDS (3 << 11) |
| #define MTK_NDP_CO_PRO BIT(10) |
| #define MTK_TX_WB_DDONE BIT(6) |
| #define MTK_DMA_SIZE_16DWORDS (2 << 4) |
| #define MTK_RX_DMA_BUSY BIT(3) |
| #define MTK_TX_DMA_BUSY BIT(1) |
| #define MTK_RX_DMA_EN BIT(2) |
| #define MTK_TX_DMA_EN BIT(0) |
| #define MTK_DMA_BUSY_TIMEOUT HZ |
| |
| /* QDMA Reset Index Register */ |
| #define MTK_QDMA_RST_IDX 0x1A08 |
| |
| /* QDMA Delay Interrupt Register */ |
| #define MTK_QDMA_DELAY_INT 0x1A0C |
| |
| /* QDMA Flow Control Register */ |
| #define MTK_QDMA_FC_THRES 0x1A10 |
| #define FC_THRES_DROP_MODE BIT(20) |
| #define FC_THRES_DROP_EN (7 << 16) |
| #define FC_THRES_MIN 0x4444 |
| |
| /* QDMA Interrupt Status Register */ |
| #define MTK_QMTK_INT_STATUS 0x1A18 |
| #define MTK_RX_DONE_INT3 BIT(19) |
| #define MTK_RX_DONE_INT2 BIT(18) |
| #define MTK_RX_DONE_INT1 BIT(17) |
| #define MTK_RX_DONE_INT0 BIT(16) |
| #define MTK_TX_DONE_INT3 BIT(3) |
| #define MTK_TX_DONE_INT2 BIT(2) |
| #define MTK_TX_DONE_INT1 BIT(1) |
| #define MTK_TX_DONE_INT0 BIT(0) |
| #define MTK_RX_DONE_INT (MTK_RX_DONE_INT0 | MTK_RX_DONE_INT1 | \ |
| MTK_RX_DONE_INT2 | MTK_RX_DONE_INT3) |
| #define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \ |
| MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3) |
| |
| /* QDMA Interrupt grouping registers */ |
| #define MTK_QDMA_INT_GRP1 0x1a20 |
| #define MTK_QDMA_INT_GRP2 0x1a24 |
| #define MTK_RLS_DONE_INT BIT(0) |
| |
| /* QDMA Interrupt Status Register */ |
| #define MTK_QDMA_INT_MASK 0x1A1C |
| |
| /* QDMA Interrupt Mask Register */ |
| #define MTK_QDMA_HRED2 0x1A44 |
| |
| /* QDMA TX Forward CPU Pointer Register */ |
| #define MTK_QTX_CTX_PTR 0x1B00 |
| |
| /* QDMA TX Forward DMA Pointer Register */ |
| #define MTK_QTX_DTX_PTR 0x1B04 |
| |
| /* QDMA TX Release CPU Pointer Register */ |
| #define MTK_QTX_CRX_PTR 0x1B10 |
| |
| /* QDMA TX Release DMA Pointer Register */ |
| #define MTK_QTX_DRX_PTR 0x1B14 |
| |
| /* QDMA FQ Head Pointer Register */ |
| #define MTK_QDMA_FQ_HEAD 0x1B20 |
| |
| /* QDMA FQ Head Pointer Register */ |
| #define MTK_QDMA_FQ_TAIL 0x1B24 |
| |
| /* QDMA FQ Free Page Counter Register */ |
| #define MTK_QDMA_FQ_CNT 0x1B28 |
| |
| /* QDMA FQ Free Page Buffer Length Register */ |
| #define MTK_QDMA_FQ_BLEN 0x1B2C |
| |
| /* GMA1 Received Good Byte Count Register */ |
| #define MTK_GDM1_TX_GBCNT 0x2400 |
| #define MTK_STAT_OFFSET 0x40 |
| |
| /* QDMA descriptor txd4 */ |
| #define TX_DMA_CHKSUM (0x7 << 29) |
| #define TX_DMA_TSO BIT(28) |
| #define TX_DMA_FPORT_SHIFT 25 |
| #define TX_DMA_FPORT_MASK 0x7 |
| #define TX_DMA_INS_VLAN BIT(16) |
| |
| /* QDMA descriptor txd3 */ |
| #define TX_DMA_OWNER_CPU BIT(31) |
| #define TX_DMA_LS0 BIT(30) |
| #define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16) |
| #define TX_DMA_SWC BIT(14) |
| #define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16) |
| |
| /* QDMA descriptor rxd2 */ |
| #define RX_DMA_DONE BIT(31) |
| #define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16) |
| #define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff) |
| |
| /* QDMA descriptor rxd3 */ |
| #define RX_DMA_VID(_x) ((_x) & 0xfff) |
| |
| /* QDMA descriptor rxd4 */ |
| #define RX_DMA_L4_VALID BIT(24) |
| #define RX_DMA_FPORT_SHIFT 19 |
| #define RX_DMA_FPORT_MASK 0x7 |
| |
| /* PHY Indirect Access Control registers */ |
| #define MTK_PHY_IAC 0x10004 |
| #define PHY_IAC_ACCESS BIT(31) |
| #define PHY_IAC_READ BIT(19) |
| #define PHY_IAC_WRITE BIT(18) |
| #define PHY_IAC_START BIT(16) |
| #define PHY_IAC_ADDR_SHIFT 20 |
| #define PHY_IAC_REG_SHIFT 25 |
| #define PHY_IAC_TIMEOUT HZ |
| |
| /* Mac control registers */ |
| #define MTK_MAC_MCR(x) (0x10100 + (x * 0x100)) |
| #define MAC_MCR_MAX_RX_1536 BIT(24) |
| #define MAC_MCR_IPG_CFG (BIT(18) | BIT(16)) |
| #define MAC_MCR_FORCE_MODE BIT(15) |
| #define MAC_MCR_TX_EN BIT(14) |
| #define MAC_MCR_RX_EN BIT(13) |
| #define MAC_MCR_BACKOFF_EN BIT(9) |
| #define MAC_MCR_BACKPR_EN BIT(8) |
| #define MAC_MCR_FORCE_RX_FC BIT(5) |
| #define MAC_MCR_FORCE_TX_FC BIT(4) |
| #define MAC_MCR_SPEED_1000 BIT(3) |
| #define MAC_MCR_SPEED_100 BIT(2) |
| #define MAC_MCR_FORCE_DPX BIT(1) |
| #define MAC_MCR_FORCE_LINK BIT(0) |
| #define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \ |
| MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \ |
| MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \ |
| MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \ |
| MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \ |
| MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK) |
| |
| /* TRGMII RXC control register */ |
| #define TRGMII_RCK_CTRL 0x10300 |
| #define DQSI0(x) ((x << 0) & GENMASK(6, 0)) |
| #define DQSI1(x) ((x << 8) & GENMASK(14, 8)) |
| #define RXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16)) |
| #define RXC_DQSISEL BIT(30) |
| #define RCK_CTRL_RGMII_1000 (RXC_DQSISEL | RXCTL_DMWTLAT(2) | DQSI1(16)) |
| #define RCK_CTRL_RGMII_10_100 RXCTL_DMWTLAT(2) |
| |
| /* TRGMII RXC control register */ |
| #define TRGMII_TCK_CTRL 0x10340 |
| #define TXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16)) |
| #define TXC_INV BIT(30) |
| #define TCK_CTRL_RGMII_1000 TXCTL_DMWTLAT(2) |
| #define TCK_CTRL_RGMII_10_100 (TXC_INV | TXCTL_DMWTLAT(2)) |
| |
| /* TRGMII Interface mode register */ |
| #define INTF_MODE 0x10390 |
| #define TRGMII_INTF_DIS BIT(0) |
| #define TRGMII_MODE BIT(1) |
| #define TRGMII_CENTRAL_ALIGNED BIT(2) |
| #define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED) |
| #define INTF_MODE_RGMII_10_100 0 |
| |
| /* GPIO port control registers for GMAC 2*/ |
| #define GPIO_OD33_CTRL8 0x4c0 |
| #define GPIO_BIAS_CTRL 0xed0 |
| #define GPIO_DRV_SEL10 0xf00 |
| |
| /* ethernet subsystem chip id register */ |
| #define ETHSYS_CHIPID0_3 0x0 |
| #define ETHSYS_CHIPID4_7 0x4 |
| #define MT7623_ETH 7623 |
| |
| /* ethernet subsystem config register */ |
| #define ETHSYS_SYSCFG0 0x14 |
| #define SYSCFG0_GE_MASK 0x3 |
| #define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2))) |
| |
| /* ethernet subsystem clock register */ |
| #define ETHSYS_CLKCFG0 0x2c |
| #define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11) |
| |
| /* ethernet reset control register */ |
| #define ETHSYS_RSTCTRL 0x34 |
| #define RSTCTRL_FE BIT(6) |
| #define RSTCTRL_PPE BIT(31) |
| |
| struct mtk_rx_dma { |
| unsigned int rxd1; |
| unsigned int rxd2; |
| unsigned int rxd3; |
| unsigned int rxd4; |
| } __packed __aligned(4); |
| |
| struct mtk_tx_dma { |
| unsigned int txd1; |
| unsigned int txd2; |
| unsigned int txd3; |
| unsigned int txd4; |
| } __packed __aligned(4); |
| |
| struct mtk_eth; |
| struct mtk_mac; |
| |
| /* struct mtk_hw_stats - the structure that holds the traffic statistics. |
| * @stats_lock: make sure that stats operations are atomic |
| * @reg_offset: the status register offset of the SoC |
| * @syncp: the refcount |
| * |
| * All of the supported SoCs have hardware counters for traffic statistics. |
| * Whenever the status IRQ triggers we can read the latest stats from these |
| * counters and store them in this struct. |
| */ |
| struct mtk_hw_stats { |
| u64 tx_bytes; |
| u64 tx_packets; |
| u64 tx_skip; |
| u64 tx_collisions; |
| u64 rx_bytes; |
| u64 rx_packets; |
| u64 rx_overflow; |
| u64 rx_fcs_errors; |
| u64 rx_short_errors; |
| u64 rx_long_errors; |
| u64 rx_checksum_errors; |
| u64 rx_flow_control_packets; |
| |
| spinlock_t stats_lock; |
| u32 reg_offset; |
| struct u64_stats_sync syncp; |
| }; |
| |
| /* PDMA descriptor can point at 1-2 segments. This enum allows us to track how |
| * memory was allocated so that it can be freed properly |
| */ |
| enum mtk_tx_flags { |
| MTK_TX_FLAGS_SINGLE0 = 0x01, |
| MTK_TX_FLAGS_PAGE0 = 0x02, |
| }; |
| |
| /* This enum allows us to identify how the clock is defined on the array of the |
| * clock in the order |
| */ |
| enum mtk_clks_map { |
| MTK_CLK_ETHIF, |
| MTK_CLK_ESW, |
| MTK_CLK_GP1, |
| MTK_CLK_GP2, |
| MTK_CLK_TRGPLL, |
| MTK_CLK_MAX |
| }; |
| |
| enum mtk_dev_state { |
| MTK_HW_INIT, |
| MTK_RESETTING |
| }; |
| |
| /* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at |
| * by the TX descriptor s |
| * @skb: The SKB pointer of the packet being sent |
| * @dma_addr0: The base addr of the first segment |
| * @dma_len0: The length of the first segment |
| * @dma_addr1: The base addr of the second segment |
| * @dma_len1: The length of the second segment |
| */ |
| struct mtk_tx_buf { |
| struct sk_buff *skb; |
| u32 flags; |
| DEFINE_DMA_UNMAP_ADDR(dma_addr0); |
| DEFINE_DMA_UNMAP_LEN(dma_len0); |
| DEFINE_DMA_UNMAP_ADDR(dma_addr1); |
| DEFINE_DMA_UNMAP_LEN(dma_len1); |
| }; |
| |
| /* struct mtk_tx_ring - This struct holds info describing a TX ring |
| * @dma: The descriptor ring |
| * @buf: The memory pointed at by the ring |
| * @phys: The physical addr of tx_buf |
| * @next_free: Pointer to the next free descriptor |
| * @last_free: Pointer to the last free descriptor |
| * @thresh: The threshold of minimum amount of free descriptors |
| * @free_count: QDMA uses a linked list. Track how many free descriptors |
| * are present |
| */ |
| struct mtk_tx_ring { |
| struct mtk_tx_dma *dma; |
| struct mtk_tx_buf *buf; |
| dma_addr_t phys; |
| struct mtk_tx_dma *next_free; |
| struct mtk_tx_dma *last_free; |
| u16 thresh; |
| atomic_t free_count; |
| }; |
| |
| /* PDMA rx ring mode */ |
| enum mtk_rx_flags { |
| MTK_RX_FLAGS_NORMAL = 0, |
| MTK_RX_FLAGS_HWLRO, |
| }; |
| |
| /* struct mtk_rx_ring - This struct holds info describing a RX ring |
| * @dma: The descriptor ring |
| * @data: The memory pointed at by the ring |
| * @phys: The physical addr of rx_buf |
| * @frag_size: How big can each fragment be |
| * @buf_size: The size of each packet buffer |
| * @calc_idx: The current head of ring |
| */ |
| struct mtk_rx_ring { |
| struct mtk_rx_dma *dma; |
| u8 **data; |
| dma_addr_t phys; |
| u16 frag_size; |
| u16 buf_size; |
| u16 dma_size; |
| bool calc_idx_update; |
| u16 calc_idx; |
| u32 crx_idx_reg; |
| }; |
| |
| /* currently no SoC has more than 2 macs */ |
| #define MTK_MAX_DEVS 2 |
| |
| /* struct mtk_eth - This is the main datasructure for holding the state |
| * of the driver |
| * @dev: The device pointer |
| * @base: The mapped register i/o base |
| * @page_lock: Make sure that register operations are atomic |
| * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a |
| * dummy for NAPI to work |
| * @netdev: The netdev instances |
| * @mac: Each netdev is linked to a physical MAC |
| * @irq: The IRQ that we are using |
| * @msg_enable: Ethtool msg level |
| * @ethsys: The register map pointing at the range used to setup |
| * MII modes |
| * @pctl: The register map pointing at the range used to setup |
| * GMAC port drive/slew values |
| * @dma_refcnt: track how many netdevs are using the DMA engine |
| * @tx_ring: Pointer to the memore holding info about the TX ring |
| * @rx_ring: Pointer to the memore holding info about the RX ring |
| * @tx_napi: The TX NAPI struct |
| * @rx_napi: The RX NAPI struct |
| * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring |
| * @phy_scratch_ring: physical address of scratch_ring |
| * @scratch_head: The scratch memory that scratch_ring points to. |
| * @clks: clock array for all clocks required |
| * @mii_bus: If there is a bus we need to create an instance for it |
| * @pending_work: The workqueue used to reset the dma ring |
| * @state Initialization and runtime state of the device. |
| */ |
| |
| struct mtk_eth { |
| struct device *dev; |
| void __iomem *base; |
| spinlock_t page_lock; |
| spinlock_t irq_lock; |
| struct net_device dummy_dev; |
| struct net_device *netdev[MTK_MAX_DEVS]; |
| struct mtk_mac *mac[MTK_MAX_DEVS]; |
| int irq[3]; |
| u32 msg_enable; |
| unsigned long sysclk; |
| struct regmap *ethsys; |
| struct regmap *pctl; |
| u32 chip_id; |
| bool hwlro; |
| atomic_t dma_refcnt; |
| struct mtk_tx_ring tx_ring; |
| struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM]; |
| struct napi_struct tx_napi; |
| struct napi_struct rx_napi; |
| struct mtk_tx_dma *scratch_ring; |
| dma_addr_t phy_scratch_ring; |
| void *scratch_head; |
| struct clk *clks[MTK_CLK_MAX]; |
| |
| struct mii_bus *mii_bus; |
| struct work_struct pending_work; |
| unsigned long state; |
| }; |
| |
| /* struct mtk_mac - the structure that holds the info about the MACs of the |
| * SoC |
| * @id: The number of the MAC |
| * @ge_mode: Interface mode kept for setup restoring |
| * @of_node: Our devicetree node |
| * @hw: Backpointer to our main datastruture |
| * @hw_stats: Packet statistics counter |
| * @trgmii Indicate if the MAC uses TRGMII connected to internal |
| switch |
| */ |
| struct mtk_mac { |
| int id; |
| int ge_mode; |
| struct device_node *of_node; |
| struct mtk_eth *hw; |
| struct mtk_hw_stats *hw_stats; |
| __be32 hwlro_ip[MTK_MAX_LRO_IP_CNT]; |
| int hwlro_ip_cnt; |
| bool trgmii; |
| }; |
| |
| /* the struct describing the SoC. these are declared in the soc_xyz.c files */ |
| extern const struct of_device_id of_mtk_match[]; |
| |
| /* read the hardware status register */ |
| void mtk_stats_update_mac(struct mtk_mac *mac); |
| |
| void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg); |
| u32 mtk_r32(struct mtk_eth *eth, unsigned reg); |
| |
| #endif /* MTK_ETH_H */ |
