689 lines
21 KiB
C
689 lines
21 KiB
C
/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
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* Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
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* Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
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*/
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#ifndef MTK_ETH_H
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#define MTK_ETH_H
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#include <linux/refcount.h>
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#define MTK_QDMA_PAGE_SIZE 2048
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#define MTK_MAX_RX_LENGTH 1536
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#define MTK_TX_DMA_BUF_LEN 0x3fff
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#define MTK_DMA_SIZE 256
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#define MTK_NAPI_WEIGHT 64
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#define MTK_MAC_COUNT 2
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#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
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#define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
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#define MTK_DMA_DUMMY_DESC 0xffffffff
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#define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \
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NETIF_MSG_PROBE | \
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NETIF_MSG_LINK | \
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NETIF_MSG_TIMER | \
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NETIF_MSG_IFDOWN | \
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NETIF_MSG_IFUP | \
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NETIF_MSG_RX_ERR | \
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NETIF_MSG_TX_ERR)
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#define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
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NETIF_F_RXCSUM | \
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NETIF_F_HW_VLAN_CTAG_TX | \
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NETIF_F_HW_VLAN_CTAG_RX | \
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NETIF_F_SG | NETIF_F_TSO | \
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NETIF_F_TSO6 | \
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NETIF_F_IPV6_CSUM)
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#define NEXT_RX_DESP_IDX(X, Y) (((X) + 1) & ((Y) - 1))
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#define MTK_MAX_RX_RING_NUM 4
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#define MTK_HW_LRO_DMA_SIZE 8
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#define MTK_MAX_LRO_RX_LENGTH (4096 * 3)
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#define MTK_MAX_LRO_IP_CNT 2
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#define MTK_HW_LRO_TIMER_UNIT 1 /* 20 us */
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#define MTK_HW_LRO_REFRESH_TIME 50000 /* 1 sec. */
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#define MTK_HW_LRO_AGG_TIME 10 /* 200us */
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#define MTK_HW_LRO_AGE_TIME 50 /* 1ms */
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#define MTK_HW_LRO_MAX_AGG_CNT 64
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#define MTK_HW_LRO_BW_THRE 3000
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#define MTK_HW_LRO_REPLACE_DELTA 1000
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#define MTK_HW_LRO_SDL_REMAIN_ROOM 1522
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/* Frame Engine Global Reset Register */
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#define MTK_RST_GL 0x04
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#define RST_GL_PSE BIT(0)
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/* Frame Engine Interrupt Status Register */
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#define MTK_INT_STATUS2 0x08
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#define MTK_GDM1_AF BIT(28)
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#define MTK_GDM2_AF BIT(29)
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/* PDMA HW LRO Alter Flow Timer Register */
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#define MTK_PDMA_LRO_ALT_REFRESH_TIMER 0x1c
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/* Frame Engine Interrupt Grouping Register */
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#define MTK_FE_INT_GRP 0x20
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/* CDMP Ingress Control Register */
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#define MTK_CDMQ_IG_CTRL 0x1400
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#define MTK_CDMQ_STAG_EN BIT(0)
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/* CDMP Exgress Control Register */
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#define MTK_CDMP_EG_CTRL 0x404
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/* GDM Exgress Control Register */
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#define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000))
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#define MTK_GDMA_ICS_EN BIT(22)
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#define MTK_GDMA_TCS_EN BIT(21)
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#define MTK_GDMA_UCS_EN BIT(20)
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/* Unicast Filter MAC Address Register - Low */
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#define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000))
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/* Unicast Filter MAC Address Register - High */
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#define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000))
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/* PDMA RX Base Pointer Register */
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#define MTK_PRX_BASE_PTR0 0x900
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#define MTK_PRX_BASE_PTR_CFG(x) (MTK_PRX_BASE_PTR0 + (x * 0x10))
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/* PDMA RX Maximum Count Register */
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#define MTK_PRX_MAX_CNT0 0x904
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#define MTK_PRX_MAX_CNT_CFG(x) (MTK_PRX_MAX_CNT0 + (x * 0x10))
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/* PDMA RX CPU Pointer Register */
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#define MTK_PRX_CRX_IDX0 0x908
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#define MTK_PRX_CRX_IDX_CFG(x) (MTK_PRX_CRX_IDX0 + (x * 0x10))
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/* PDMA HW LRO Control Registers */
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#define MTK_PDMA_LRO_CTRL_DW0 0x980
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#define MTK_LRO_EN BIT(0)
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#define MTK_L3_CKS_UPD_EN BIT(7)
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#define MTK_LRO_ALT_PKT_CNT_MODE BIT(21)
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#define MTK_LRO_RING_RELINQUISH_REQ (0x7 << 26)
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#define MTK_LRO_RING_RELINQUISH_DONE (0x7 << 29)
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#define MTK_PDMA_LRO_CTRL_DW1 0x984
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#define MTK_PDMA_LRO_CTRL_DW2 0x988
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#define MTK_PDMA_LRO_CTRL_DW3 0x98c
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#define MTK_ADMA_MODE BIT(15)
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#define MTK_LRO_MIN_RXD_SDL (MTK_HW_LRO_SDL_REMAIN_ROOM << 16)
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/* PDMA Global Configuration Register */
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#define MTK_PDMA_GLO_CFG 0xa04
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#define MTK_MULTI_EN BIT(10)
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/* PDMA Reset Index Register */
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#define MTK_PDMA_RST_IDX 0xa08
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#define MTK_PST_DRX_IDX0 BIT(16)
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#define MTK_PST_DRX_IDX_CFG(x) (MTK_PST_DRX_IDX0 << (x))
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/* PDMA Delay Interrupt Register */
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#define MTK_PDMA_DELAY_INT 0xa0c
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#define MTK_PDMA_DELAY_RX_EN BIT(15)
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#define MTK_PDMA_DELAY_RX_PINT 4
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#define MTK_PDMA_DELAY_RX_PINT_SHIFT 8
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#define MTK_PDMA_DELAY_RX_PTIME 4
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#define MTK_PDMA_DELAY_RX_DELAY \
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(MTK_PDMA_DELAY_RX_EN | MTK_PDMA_DELAY_RX_PTIME | \
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(MTK_PDMA_DELAY_RX_PINT << MTK_PDMA_DELAY_RX_PINT_SHIFT))
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/* PDMA Interrupt Status Register */
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#define MTK_PDMA_INT_STATUS 0xa20
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/* PDMA Interrupt Mask Register */
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#define MTK_PDMA_INT_MASK 0xa28
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/* PDMA HW LRO Alter Flow Delta Register */
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#define MTK_PDMA_LRO_ALT_SCORE_DELTA 0xa4c
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/* PDMA Interrupt grouping registers */
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#define MTK_PDMA_INT_GRP1 0xa50
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#define MTK_PDMA_INT_GRP2 0xa54
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/* PDMA HW LRO IP Setting Registers */
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#define MTK_LRO_RX_RING0_DIP_DW0 0xb04
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#define MTK_LRO_DIP_DW0_CFG(x) (MTK_LRO_RX_RING0_DIP_DW0 + (x * 0x40))
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#define MTK_RING_MYIP_VLD BIT(9)
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/* PDMA HW LRO Ring Control Registers */
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#define MTK_LRO_RX_RING0_CTRL_DW1 0xb28
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#define MTK_LRO_RX_RING0_CTRL_DW2 0xb2c
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#define MTK_LRO_RX_RING0_CTRL_DW3 0xb30
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#define MTK_LRO_CTRL_DW1_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW1 + (x * 0x40))
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#define MTK_LRO_CTRL_DW2_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW2 + (x * 0x40))
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#define MTK_LRO_CTRL_DW3_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW3 + (x * 0x40))
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#define MTK_RING_AGE_TIME_L ((MTK_HW_LRO_AGE_TIME & 0x3ff) << 22)
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#define MTK_RING_AGE_TIME_H ((MTK_HW_LRO_AGE_TIME >> 10) & 0x3f)
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#define MTK_RING_AUTO_LERAN_MODE (3 << 6)
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#define MTK_RING_VLD BIT(8)
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#define MTK_RING_MAX_AGG_TIME ((MTK_HW_LRO_AGG_TIME & 0xffff) << 10)
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#define MTK_RING_MAX_AGG_CNT_L ((MTK_HW_LRO_MAX_AGG_CNT & 0x3f) << 26)
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#define MTK_RING_MAX_AGG_CNT_H ((MTK_HW_LRO_MAX_AGG_CNT >> 6) & 0x3)
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/* QDMA TX Queue Configuration Registers */
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#define MTK_QTX_CFG(x) (0x1800 + (x * 0x10))
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#define QDMA_RES_THRES 4
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/* QDMA TX Queue Scheduler Registers */
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#define MTK_QTX_SCH(x) (0x1804 + (x * 0x10))
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/* QDMA RX Base Pointer Register */
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#define MTK_QRX_BASE_PTR0 0x1900
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/* QDMA RX Maximum Count Register */
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#define MTK_QRX_MAX_CNT0 0x1904
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/* QDMA RX CPU Pointer Register */
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#define MTK_QRX_CRX_IDX0 0x1908
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/* QDMA RX DMA Pointer Register */
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#define MTK_QRX_DRX_IDX0 0x190C
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/* QDMA Global Configuration Register */
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#define MTK_QDMA_GLO_CFG 0x1A04
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#define MTK_RX_2B_OFFSET BIT(31)
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#define MTK_RX_BT_32DWORDS (3 << 11)
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#define MTK_NDP_CO_PRO BIT(10)
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#define MTK_TX_WB_DDONE BIT(6)
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#define MTK_DMA_SIZE_16DWORDS (2 << 4)
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#define MTK_RX_DMA_BUSY BIT(3)
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#define MTK_TX_DMA_BUSY BIT(1)
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#define MTK_RX_DMA_EN BIT(2)
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#define MTK_TX_DMA_EN BIT(0)
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#define MTK_DMA_BUSY_TIMEOUT HZ
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/* QDMA Reset Index Register */
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#define MTK_QDMA_RST_IDX 0x1A08
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/* QDMA Delay Interrupt Register */
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#define MTK_QDMA_DELAY_INT 0x1A0C
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/* QDMA Flow Control Register */
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#define MTK_QDMA_FC_THRES 0x1A10
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#define FC_THRES_DROP_MODE BIT(20)
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#define FC_THRES_DROP_EN (7 << 16)
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#define FC_THRES_MIN 0x4444
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/* QDMA Interrupt Status Register */
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#define MTK_QMTK_INT_STATUS 0x1A18
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#define MTK_RX_DONE_DLY BIT(30)
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#define MTK_RX_DONE_INT3 BIT(19)
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#define MTK_RX_DONE_INT2 BIT(18)
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#define MTK_RX_DONE_INT1 BIT(17)
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#define MTK_RX_DONE_INT0 BIT(16)
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#define MTK_TX_DONE_INT3 BIT(3)
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#define MTK_TX_DONE_INT2 BIT(2)
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#define MTK_TX_DONE_INT1 BIT(1)
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#define MTK_TX_DONE_INT0 BIT(0)
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#define MTK_RX_DONE_INT MTK_RX_DONE_DLY
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#define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
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MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
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/* QDMA Interrupt grouping registers */
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#define MTK_QDMA_INT_GRP1 0x1a20
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#define MTK_QDMA_INT_GRP2 0x1a24
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#define MTK_RLS_DONE_INT BIT(0)
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/* QDMA Interrupt Status Register */
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#define MTK_QDMA_INT_MASK 0x1A1C
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/* QDMA Interrupt Mask Register */
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#define MTK_QDMA_HRED2 0x1A44
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/* QDMA TX Forward CPU Pointer Register */
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#define MTK_QTX_CTX_PTR 0x1B00
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/* QDMA TX Forward DMA Pointer Register */
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#define MTK_QTX_DTX_PTR 0x1B04
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/* QDMA TX Release CPU Pointer Register */
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#define MTK_QTX_CRX_PTR 0x1B10
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/* QDMA TX Release DMA Pointer Register */
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#define MTK_QTX_DRX_PTR 0x1B14
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/* QDMA FQ Head Pointer Register */
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#define MTK_QDMA_FQ_HEAD 0x1B20
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/* QDMA FQ Head Pointer Register */
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#define MTK_QDMA_FQ_TAIL 0x1B24
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/* QDMA FQ Free Page Counter Register */
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#define MTK_QDMA_FQ_CNT 0x1B28
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/* QDMA FQ Free Page Buffer Length Register */
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#define MTK_QDMA_FQ_BLEN 0x1B2C
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/* GMA1 Received Good Byte Count Register */
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#define MTK_GDM1_TX_GBCNT 0x2400
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#define MTK_STAT_OFFSET 0x40
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/* QDMA descriptor txd4 */
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#define TX_DMA_CHKSUM (0x7 << 29)
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#define TX_DMA_TSO BIT(28)
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#define TX_DMA_FPORT_SHIFT 25
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#define TX_DMA_FPORT_MASK 0x7
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#define TX_DMA_INS_VLAN BIT(16)
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/* QDMA descriptor txd3 */
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#define TX_DMA_OWNER_CPU BIT(31)
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#define TX_DMA_LS0 BIT(30)
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#define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16)
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#define TX_DMA_SWC BIT(14)
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#define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16)
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/* QDMA descriptor rxd2 */
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#define RX_DMA_DONE BIT(31)
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#define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
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#define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
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/* QDMA descriptor rxd3 */
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#define RX_DMA_VID(_x) ((_x) & 0xfff)
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/* QDMA descriptor rxd4 */
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#define RX_DMA_L4_VALID BIT(24)
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#define RX_DMA_FPORT_SHIFT 19
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#define RX_DMA_FPORT_MASK 0x7
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/* PHY Indirect Access Control registers */
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#define MTK_PHY_IAC 0x10004
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#define PHY_IAC_ACCESS BIT(31)
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#define PHY_IAC_READ BIT(19)
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#define PHY_IAC_WRITE BIT(18)
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#define PHY_IAC_START BIT(16)
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#define PHY_IAC_ADDR_SHIFT 20
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#define PHY_IAC_REG_SHIFT 25
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#define PHY_IAC_TIMEOUT HZ
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#define MTK_MAC_MISC 0x1000c
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#define MTK_MUX_TO_ESW BIT(0)
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/* Mac control registers */
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#define MTK_MAC_MCR(x) (0x10100 + (x * 0x100))
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#define MAC_MCR_MAX_RX_1536 BIT(24)
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#define MAC_MCR_IPG_CFG (BIT(18) | BIT(16))
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#define MAC_MCR_FORCE_MODE BIT(15)
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#define MAC_MCR_TX_EN BIT(14)
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#define MAC_MCR_RX_EN BIT(13)
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#define MAC_MCR_BACKOFF_EN BIT(9)
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#define MAC_MCR_BACKPR_EN BIT(8)
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#define MAC_MCR_FORCE_RX_FC BIT(5)
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#define MAC_MCR_FORCE_TX_FC BIT(4)
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#define MAC_MCR_SPEED_1000 BIT(3)
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#define MAC_MCR_SPEED_100 BIT(2)
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#define MAC_MCR_FORCE_DPX BIT(1)
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#define MAC_MCR_FORCE_LINK BIT(0)
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#define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \
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MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \
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MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \
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MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \
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MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \
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MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK)
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/* TRGMII RXC control register */
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#define TRGMII_RCK_CTRL 0x10300
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#define DQSI0(x) ((x << 0) & GENMASK(6, 0))
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#define DQSI1(x) ((x << 8) & GENMASK(14, 8))
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#define RXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
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#define RXC_DQSISEL BIT(30)
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#define RCK_CTRL_RGMII_1000 (RXC_DQSISEL | RXCTL_DMWTLAT(2) | DQSI1(16))
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#define RCK_CTRL_RGMII_10_100 RXCTL_DMWTLAT(2)
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/* TRGMII RXC control register */
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#define TRGMII_TCK_CTRL 0x10340
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#define TXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
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#define TXC_INV BIT(30)
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#define TCK_CTRL_RGMII_1000 TXCTL_DMWTLAT(2)
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#define TCK_CTRL_RGMII_10_100 (TXC_INV | TXCTL_DMWTLAT(2))
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/* TRGMII Interface mode register */
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#define INTF_MODE 0x10390
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#define TRGMII_INTF_DIS BIT(0)
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#define TRGMII_MODE BIT(1)
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#define TRGMII_CENTRAL_ALIGNED BIT(2)
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#define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED)
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#define INTF_MODE_RGMII_10_100 0
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/* GPIO port control registers for GMAC 2*/
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#define GPIO_OD33_CTRL8 0x4c0
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#define GPIO_BIAS_CTRL 0xed0
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#define GPIO_DRV_SEL10 0xf00
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/* ethernet subsystem chip id register */
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#define ETHSYS_CHIPID0_3 0x0
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#define ETHSYS_CHIPID4_7 0x4
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#define MT7623_ETH 7623
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#define MT7622_ETH 7622
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/* ethernet subsystem config register */
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#define ETHSYS_SYSCFG0 0x14
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#define SYSCFG0_GE_MASK 0x3
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#define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2)))
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#define SYSCFG0_SGMII_MASK (3 << 8)
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#define SYSCFG0_SGMII_GMAC1 ((2 << 8) & GENMASK(9, 8))
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#define SYSCFG0_SGMII_GMAC2 ((3 << 8) & GENMASK(9, 8))
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/* ethernet subsystem clock register */
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#define ETHSYS_CLKCFG0 0x2c
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#define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11)
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/* ethernet reset control register */
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#define ETHSYS_RSTCTRL 0x34
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#define RSTCTRL_FE BIT(6)
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#define RSTCTRL_PPE BIT(31)
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/* SGMII subsystem config registers */
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/* Register to auto-negotiation restart */
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#define SGMSYS_PCS_CONTROL_1 0x0
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#define SGMII_AN_RESTART BIT(9)
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/* Register to programmable link timer, the unit in 2 * 8ns */
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#define SGMSYS_PCS_LINK_TIMER 0x18
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#define SGMII_LINK_TIMER_DEFAULT (0x186a0 & GENMASK(19, 0))
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/* Register to control remote fault */
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#define SGMSYS_SGMII_MODE 0x20
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#define SGMII_REMOTE_FAULT_DIS BIT(8)
|
|
|
|
/* Register to power up QPHY */
|
|
#define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8
|
|
#define SGMII_PHYA_PWD BIT(4)
|
|
|
|
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;
|
|
};
|
|
|
|
enum mtk_tx_flags {
|
|
/* 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.
|
|
*/
|
|
MTK_TX_FLAGS_SINGLE0 = 0x01,
|
|
MTK_TX_FLAGS_PAGE0 = 0x02,
|
|
|
|
/* MTK_TX_FLAGS_FPORTx allows tracking which port the transmitted
|
|
* SKB out instead of looking up through hardware TX descriptor.
|
|
*/
|
|
MTK_TX_FLAGS_FPORT0 = 0x04,
|
|
MTK_TX_FLAGS_FPORT1 = 0x08,
|
|
};
|
|
|
|
/* 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_GP0,
|
|
MTK_CLK_GP1,
|
|
MTK_CLK_GP2,
|
|
MTK_CLK_TRGPLL,
|
|
MTK_CLK_SGMII_TX_250M,
|
|
MTK_CLK_SGMII_RX_250M,
|
|
MTK_CLK_SGMII_CDR_REF,
|
|
MTK_CLK_SGMII_CDR_FB,
|
|
MTK_CLK_SGMII_CK,
|
|
MTK_CLK_ETH2PLL,
|
|
MTK_CLK_MAX
|
|
};
|
|
|
|
#define MT7623_CLKS_BITMAP (BIT(MTK_CLK_ETHIF) | BIT(MTK_CLK_ESW) | \
|
|
BIT(MTK_CLK_GP1) | BIT(MTK_CLK_GP2) | \
|
|
BIT(MTK_CLK_TRGPLL))
|
|
#define MT7622_CLKS_BITMAP (BIT(MTK_CLK_ETHIF) | BIT(MTK_CLK_ESW) | \
|
|
BIT(MTK_CLK_GP0) | BIT(MTK_CLK_GP1) | \
|
|
BIT(MTK_CLK_GP2) | \
|
|
BIT(MTK_CLK_SGMII_TX_250M) | \
|
|
BIT(MTK_CLK_SGMII_RX_250M) | \
|
|
BIT(MTK_CLK_SGMII_CDR_REF) | \
|
|
BIT(MTK_CLK_SGMII_CDR_FB) | \
|
|
BIT(MTK_CLK_SGMII_CK) | \
|
|
BIT(MTK_CLK_ETH2PLL))
|
|
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,
|
|
MTK_RX_FLAGS_QDMA,
|
|
};
|
|
|
|
/* 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;
|
|
};
|
|
|
|
#define MTK_TRGMII BIT(0)
|
|
#define MTK_GMAC1_TRGMII (BIT(1) | MTK_TRGMII)
|
|
#define MTK_ESW BIT(4)
|
|
#define MTK_GMAC1_ESW (BIT(5) | MTK_ESW)
|
|
#define MTK_SGMII BIT(8)
|
|
#define MTK_GMAC1_SGMII (BIT(9) | MTK_SGMII)
|
|
#define MTK_GMAC2_SGMII (BIT(10) | MTK_SGMII)
|
|
#define MTK_DUAL_GMAC_SHARED_SGMII (BIT(11) | MTK_GMAC1_SGMII | \
|
|
MTK_GMAC2_SGMII)
|
|
#define MTK_HWLRO BIT(12)
|
|
#define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x))
|
|
|
|
/* struct mtk_eth_data - This is the structure holding all differences
|
|
* among various plaforms
|
|
* @caps Flags shown the extra capability for the SoC
|
|
* @required_clks Flags shown the bitmap for required clocks on
|
|
* the target SoC
|
|
* @required_pctl A bool value to show whether the SoC requires
|
|
* the extra setup for those pins used by GMAC.
|
|
*/
|
|
struct mtk_soc_data {
|
|
u32 caps;
|
|
u32 required_clks;
|
|
bool required_pctl;
|
|
};
|
|
|
|
/* 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
|
|
* @tx_irq__lock: Make sure that IRQ register operations are atomic
|
|
* @rx_irq__lock: Make sure that IRQ 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
|
|
* @sgmiisys: The register map pointing at the range used to setup
|
|
* SGMII 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 memory holding info about the TX ring
|
|
* @rx_ring: Pointer to the memory holding info about the RX ring
|
|
* @rx_ring_qdma: Pointer to the memory holding info about the QDMA 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
|
|
* @soc: Holding specific data among vaious SoCs
|
|
*/
|
|
|
|
struct mtk_eth {
|
|
struct device *dev;
|
|
void __iomem *base;
|
|
spinlock_t page_lock;
|
|
spinlock_t tx_irq_lock;
|
|
spinlock_t rx_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 *sgmiisys;
|
|
struct regmap *pctl;
|
|
bool hwlro;
|
|
refcount_t dma_refcnt;
|
|
struct mtk_tx_ring tx_ring;
|
|
struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM];
|
|
struct mtk_rx_ring rx_ring_qdma;
|
|
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;
|
|
|
|
const struct mtk_soc_data *soc;
|
|
};
|
|
|
|
/* 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 */
|