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linux-next/drivers/net/ethernet/microchip/lan743x_main.h
Sven Van Asbroeck a8db76d40e lan743x: boost performance on cpu archs w/o dma cache snooping 
The buffers in the lan743x driver's receive ring are always 9K,
even when the largest packet that can be received (the mtu) is
much smaller. This performs particularly badly on cpu archs
without dma cache snooping (such as ARM): each received packet
results in a 9K dma_{map|unmap} operation, which is very expensive
because cpu caches need to be invalidated.

Careful measurement of the driver rx path on armv7 reveals that
the cpu spends the majority of its time waiting for cache
invalidation.

Optimize by keeping the rx ring buffer size as close as possible
to the mtu. This limits the amount of cache that requires
invalidation.

This optimization would normally force us to re-allocate all
ring buffers when the mtu is changed - a disruptive event,
because it can only happen when the network interface is down.

Remove the need to re-allocate all ring buffers by adding support
for multi-buffer frames. Now any combination of mtu and ring
buffer size will work. When the mtu changes from mtu1 to mtu2,
consumed buffers of size mtu1 are lazily replaced by newly
allocated buffers of size mtu2.

These optimizations double the rx performance on armv7.
Third parties report 3x rx speedup on armv8.

Tested with iperf3 on a freescale imx6qp + lan7430, both sides
set to mtu 1500 bytes, measure rx performance:

Before:
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-20.00  sec   550 MBytes   231 Mbits/sec    0
After:
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-20.00  sec  1.33 GBytes   570 Mbits/sec    0

Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com>
Reviewed-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-02-16 15:08:48 -08:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (C) 2018 Microchip Technology Inc. */
#ifndef _LAN743X_H
#define _LAN743X_H
#include <linux/phy.h>
#include "lan743x_ptp.h"
#define DRIVER_AUTHOR "Bryan Whitehead <Bryan.Whitehead@microchip.com>"
#define DRIVER_DESC "LAN743x PCIe Gigabit Ethernet Driver"
#define DRIVER_NAME "lan743x"
/* Register Definitions */
#define ID_REV (0x00)
#define ID_REV_ID_MASK_ (0xFFFF0000)
#define ID_REV_ID_LAN7430_ (0x74300000)
#define ID_REV_ID_LAN7431_ (0x74310000)
#define ID_REV_IS_VALID_CHIP_ID_(id_rev) \
(((id_rev) & 0xFFF00000) == 0x74300000)
#define ID_REV_CHIP_REV_MASK_ (0x0000FFFF)
#define ID_REV_CHIP_REV_A0_ (0x00000000)
#define ID_REV_CHIP_REV_B0_ (0x00000010)
#define FPGA_REV (0x04)
#define FPGA_REV_GET_MINOR_(fpga_rev) (((fpga_rev) >> 8) & 0x000000FF)
#define FPGA_REV_GET_MAJOR_(fpga_rev) ((fpga_rev) & 0x000000FF)
#define HW_CFG (0x010)
#define HW_CFG_RELOAD_TYPE_ALL_ (0x00000FC0)
#define HW_CFG_EE_OTP_RELOAD_ BIT(4)
#define HW_CFG_LRST_ BIT(1)
#define PMT_CTL (0x014)
#define PMT_CTL_ETH_PHY_D3_COLD_OVR_ BIT(27)
#define PMT_CTL_MAC_D3_RX_CLK_OVR_ BIT(25)
#define PMT_CTL_ETH_PHY_EDPD_PLL_CTL_ BIT(24)
#define PMT_CTL_ETH_PHY_D3_OVR_ BIT(23)
#define PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ BIT(18)
#define PMT_CTL_GPIO_WAKEUP_EN_ BIT(15)
#define PMT_CTL_EEE_WAKEUP_EN_ BIT(13)
#define PMT_CTL_READY_ BIT(7)
#define PMT_CTL_ETH_PHY_RST_ BIT(4)
#define PMT_CTL_WOL_EN_ BIT(3)
#define PMT_CTL_ETH_PHY_WAKE_EN_ BIT(2)
#define PMT_CTL_WUPS_MASK_ (0x00000003)
#define DP_SEL (0x024)
#define DP_SEL_DPRDY_ BIT(31)
#define DP_SEL_MASK_ (0x0000001F)
#define DP_SEL_RFE_RAM (0x00000001)
#define DP_SEL_VHF_HASH_LEN (16)
#define DP_SEL_VHF_VLAN_LEN (128)
#define DP_CMD (0x028)
#define DP_CMD_WRITE_ (0x00000001)
#define DP_ADDR (0x02C)
#define DP_DATA_0 (0x030)
#define E2P_CMD (0x040)
#define E2P_CMD_EPC_BUSY_ BIT(31)
#define E2P_CMD_EPC_CMD_WRITE_ (0x30000000)
#define E2P_CMD_EPC_CMD_EWEN_ (0x20000000)
#define E2P_CMD_EPC_CMD_READ_ (0x00000000)
#define E2P_CMD_EPC_TIMEOUT_ BIT(10)
#define E2P_CMD_EPC_ADDR_MASK_ (0x000001FF)
#define E2P_DATA (0x044)
#define GPIO_CFG0 (0x050)
#define GPIO_CFG0_GPIO_DIR_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG0_GPIO_DATA_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG1 (0x054)
#define GPIO_CFG1_GPIOEN_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG1_GPIOBUF_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG2 (0x058)
#define GPIO_CFG2_1588_POL_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG3 (0x05C)
#define GPIO_CFG3_1588_CH_SEL_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG3_1588_OE_BIT_(bit) BIT(0 + (bit))
#define FCT_RX_CTL (0xAC)
#define FCT_RX_CTL_EN_(channel) BIT(28 + (channel))
#define FCT_RX_CTL_DIS_(channel) BIT(24 + (channel))
#define FCT_RX_CTL_RESET_(channel) BIT(20 + (channel))
#define FCT_TX_CTL (0xC4)
#define FCT_TX_CTL_EN_(channel) BIT(28 + (channel))
#define FCT_TX_CTL_DIS_(channel) BIT(24 + (channel))
#define FCT_TX_CTL_RESET_(channel) BIT(20 + (channel))
#define FCT_FLOW(rx_channel) (0xE0 + ((rx_channel) << 2))
#define FCT_FLOW_CTL_OFF_THRESHOLD_ (0x00007F00)
#define FCT_FLOW_CTL_OFF_THRESHOLD_SET_(value) \
((value << 8) & FCT_FLOW_CTL_OFF_THRESHOLD_)
#define FCT_FLOW_CTL_REQ_EN_ BIT(7)
#define FCT_FLOW_CTL_ON_THRESHOLD_ (0x0000007F)
#define FCT_FLOW_CTL_ON_THRESHOLD_SET_(value) \
((value << 0) & FCT_FLOW_CTL_ON_THRESHOLD_)
#define MAC_CR (0x100)
#define MAC_CR_MII_EN_ BIT(19)
#define MAC_CR_EEE_EN_ BIT(17)
#define MAC_CR_ADD_ BIT(12)
#define MAC_CR_ASD_ BIT(11)
#define MAC_CR_CNTR_RST_ BIT(5)
#define MAC_CR_DPX_ BIT(3)
#define MAC_CR_CFG_H_ BIT(2)
#define MAC_CR_CFG_L_ BIT(1)
#define MAC_CR_RST_ BIT(0)
#define MAC_RX (0x104)
#define MAC_RX_MAX_SIZE_SHIFT_ (16)
#define MAC_RX_MAX_SIZE_MASK_ (0x3FFF0000)
#define MAC_RX_RXD_ BIT(1)
#define MAC_RX_RXEN_ BIT(0)
#define MAC_TX (0x108)
#define MAC_TX_TXD_ BIT(1)
#define MAC_TX_TXEN_ BIT(0)
#define MAC_FLOW (0x10C)
#define MAC_FLOW_CR_TX_FCEN_ BIT(30)
#define MAC_FLOW_CR_RX_FCEN_ BIT(29)
#define MAC_FLOW_CR_FCPT_MASK_ (0x0000FFFF)
#define MAC_RX_ADDRH (0x118)
#define MAC_RX_ADDRL (0x11C)
#define MAC_MII_ACC (0x120)
#define MAC_MII_ACC_PHY_ADDR_SHIFT_ (11)
#define MAC_MII_ACC_PHY_ADDR_MASK_ (0x0000F800)
#define MAC_MII_ACC_MIIRINDA_SHIFT_ (6)
#define MAC_MII_ACC_MIIRINDA_MASK_ (0x000007C0)
#define MAC_MII_ACC_MII_READ_ (0x00000000)
#define MAC_MII_ACC_MII_WRITE_ (0x00000002)
#define MAC_MII_ACC_MII_BUSY_ BIT(0)
#define MAC_MII_DATA (0x124)
#define MAC_EEE_TX_LPI_REQ_DLY_CNT (0x130)
#define MAC_WUCSR (0x140)
#define MAC_WUCSR_RFE_WAKE_EN_ BIT(14)
#define MAC_WUCSR_PFDA_EN_ BIT(3)
#define MAC_WUCSR_WAKE_EN_ BIT(2)
#define MAC_WUCSR_MPEN_ BIT(1)
#define MAC_WUCSR_BCST_EN_ BIT(0)
#define MAC_WK_SRC (0x144)
#define MAC_WUF_CFG0 (0x150)
#define MAC_NUM_OF_WUF_CFG (32)
#define MAC_WUF_CFG_BEGIN (MAC_WUF_CFG0)
#define MAC_WUF_CFG(index) (MAC_WUF_CFG_BEGIN + (4 * (index)))
#define MAC_WUF_CFG_EN_ BIT(31)
#define MAC_WUF_CFG_TYPE_MCAST_ (0x02000000)
#define MAC_WUF_CFG_TYPE_ALL_ (0x01000000)
#define MAC_WUF_CFG_OFFSET_SHIFT_ (16)
#define MAC_WUF_CFG_CRC16_MASK_ (0x0000FFFF)
#define MAC_WUF_MASK0_0 (0x200)
#define MAC_WUF_MASK0_1 (0x204)
#define MAC_WUF_MASK0_2 (0x208)
#define MAC_WUF_MASK0_3 (0x20C)
#define MAC_WUF_MASK0_BEGIN (MAC_WUF_MASK0_0)
#define MAC_WUF_MASK1_BEGIN (MAC_WUF_MASK0_1)
#define MAC_WUF_MASK2_BEGIN (MAC_WUF_MASK0_2)
#define MAC_WUF_MASK3_BEGIN (MAC_WUF_MASK0_3)
#define MAC_WUF_MASK0(index) (MAC_WUF_MASK0_BEGIN + (0x10 * (index)))
#define MAC_WUF_MASK1(index) (MAC_WUF_MASK1_BEGIN + (0x10 * (index)))
#define MAC_WUF_MASK2(index) (MAC_WUF_MASK2_BEGIN + (0x10 * (index)))
#define MAC_WUF_MASK3(index) (MAC_WUF_MASK3_BEGIN + (0x10 * (index)))
/* offset 0x400 - 0x500, x may range from 0 to 32, for a total of 33 entries */
#define RFE_ADDR_FILT_HI(x) (0x400 + (8 * (x)))
#define RFE_ADDR_FILT_HI_VALID_ BIT(31)
/* offset 0x404 - 0x504, x may range from 0 to 32, for a total of 33 entries */
#define RFE_ADDR_FILT_LO(x) (0x404 + (8 * (x)))
#define RFE_CTL (0x508)
#define RFE_CTL_AB_ BIT(10)
#define RFE_CTL_AM_ BIT(9)
#define RFE_CTL_AU_ BIT(8)
#define RFE_CTL_MCAST_HASH_ BIT(3)
#define RFE_CTL_DA_PERFECT_ BIT(1)
#define RFE_RSS_CFG (0x554)
#define RFE_RSS_CFG_UDP_IPV6_EX_ BIT(16)
#define RFE_RSS_CFG_TCP_IPV6_EX_ BIT(15)
#define RFE_RSS_CFG_IPV6_EX_ BIT(14)
#define RFE_RSS_CFG_UDP_IPV6_ BIT(13)
#define RFE_RSS_CFG_TCP_IPV6_ BIT(12)
#define RFE_RSS_CFG_IPV6_ BIT(11)
#define RFE_RSS_CFG_UDP_IPV4_ BIT(10)
#define RFE_RSS_CFG_TCP_IPV4_ BIT(9)
#define RFE_RSS_CFG_IPV4_ BIT(8)
#define RFE_RSS_CFG_VALID_HASH_BITS_ (0x000000E0)
#define RFE_RSS_CFG_RSS_QUEUE_ENABLE_ BIT(2)
#define RFE_RSS_CFG_RSS_HASH_STORE_ BIT(1)
#define RFE_RSS_CFG_RSS_ENABLE_ BIT(0)
#define RFE_HASH_KEY(index) (0x558 + (index << 2))
#define RFE_INDX(index) (0x580 + (index << 2))
#define MAC_WUCSR2 (0x600)
#define INT_STS (0x780)
#define INT_BIT_DMA_RX_(channel) BIT(24 + (channel))
#define INT_BIT_ALL_RX_ (0x0F000000)
#define INT_BIT_DMA_TX_(channel) BIT(16 + (channel))
#define INT_BIT_ALL_TX_ (0x000F0000)
#define INT_BIT_SW_GP_ BIT(9)
#define INT_BIT_1588_ BIT(7)
#define INT_BIT_ALL_OTHER_ (INT_BIT_SW_GP_ | INT_BIT_1588_)
#define INT_BIT_MAS_ BIT(0)
#define INT_SET (0x784)
#define INT_EN_SET (0x788)
#define INT_EN_CLR (0x78C)
#define INT_STS_R2C (0x790)
#define INT_VEC_EN_SET (0x794)
#define INT_VEC_EN_CLR (0x798)
#define INT_VEC_EN_AUTO_CLR (0x79C)
#define INT_VEC_EN_(vector_index) BIT(0 + vector_index)
#define INT_VEC_MAP0 (0x7A0)
#define INT_VEC_MAP0_RX_VEC_(channel, vector) \
(((u32)(vector)) << ((channel) << 2))
#define INT_VEC_MAP1 (0x7A4)
#define INT_VEC_MAP1_TX_VEC_(channel, vector) \
(((u32)(vector)) << ((channel) << 2))
#define INT_VEC_MAP2 (0x7A8)
#define INT_MOD_MAP0 (0x7B0)
#define INT_MOD_MAP1 (0x7B4)
#define INT_MOD_MAP2 (0x7B8)
#define INT_MOD_CFG0 (0x7C0)
#define INT_MOD_CFG1 (0x7C4)
#define INT_MOD_CFG2 (0x7C8)
#define INT_MOD_CFG3 (0x7CC)
#define INT_MOD_CFG4 (0x7D0)
#define INT_MOD_CFG5 (0x7D4)
#define INT_MOD_CFG6 (0x7D8)
#define INT_MOD_CFG7 (0x7DC)
#define PTP_CMD_CTL (0x0A00)
#define PTP_CMD_CTL_PTP_CLK_STP_NSEC_ BIT(6)
#define PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_ BIT(5)
#define PTP_CMD_CTL_PTP_CLOCK_LOAD_ BIT(4)
#define PTP_CMD_CTL_PTP_CLOCK_READ_ BIT(3)
#define PTP_CMD_CTL_PTP_ENABLE_ BIT(2)
#define PTP_CMD_CTL_PTP_DISABLE_ BIT(1)
#define PTP_CMD_CTL_PTP_RESET_ BIT(0)
#define PTP_GENERAL_CONFIG (0x0A04)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(channel) \
(0x7 << (1 + ((channel) << 2)))
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_ (0)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_ (1)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_ (2)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_ (3)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_ (4)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_ (5)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_(channel, value) \
(((value) & 0x7) << (1 + ((channel) << 2)))
#define PTP_GENERAL_CONFIG_RELOAD_ADD_X_(channel) (BIT((channel) << 2))
#define PTP_INT_STS (0x0A08)
#define PTP_INT_EN_SET (0x0A0C)
#define PTP_INT_EN_CLR (0x0A10)
#define PTP_INT_BIT_TX_SWTS_ERR_ BIT(13)
#define PTP_INT_BIT_TX_TS_ BIT(12)
#define PTP_INT_BIT_TIMER_B_ BIT(1)
#define PTP_INT_BIT_TIMER_A_ BIT(0)
#define PTP_CLOCK_SEC (0x0A14)
#define PTP_CLOCK_NS (0x0A18)
#define PTP_CLOCK_SUBNS (0x0A1C)
#define PTP_CLOCK_RATE_ADJ (0x0A20)
#define PTP_CLOCK_RATE_ADJ_DIR_ BIT(31)
#define PTP_CLOCK_STEP_ADJ (0x0A2C)
#define PTP_CLOCK_STEP_ADJ_DIR_ BIT(31)
#define PTP_CLOCK_STEP_ADJ_VALUE_MASK_ (0x3FFFFFFF)
#define PTP_CLOCK_TARGET_SEC_X(channel) (0x0A30 + ((channel) << 4))
#define PTP_CLOCK_TARGET_NS_X(channel) (0x0A34 + ((channel) << 4))
#define PTP_CLOCK_TARGET_RELOAD_SEC_X(channel) (0x0A38 + ((channel) << 4))
#define PTP_CLOCK_TARGET_RELOAD_NS_X(channel) (0x0A3C + ((channel) << 4))
#define PTP_LATENCY (0x0A5C)
#define PTP_LATENCY_TX_SET_(tx_latency) (((u32)(tx_latency)) << 16)
#define PTP_LATENCY_RX_SET_(rx_latency) \
(((u32)(rx_latency)) & 0x0000FFFF)
#define PTP_CAP_INFO (0x0A60)
#define PTP_CAP_INFO_TX_TS_CNT_GET_(reg_val) (((reg_val) & 0x00000070) >> 4)
#define PTP_TX_MOD (0x0AA4)
#define PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_ (0x10000000)
#define PTP_TX_MOD2 (0x0AA8)
#define PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_ (0x00000001)
#define PTP_TX_EGRESS_SEC (0x0AAC)
#define PTP_TX_EGRESS_NS (0x0AB0)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_ (0xC0000000)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_ (0x00000000)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_ (0x40000000)
#define PTP_TX_EGRESS_NS_TS_NS_MASK_ (0x3FFFFFFF)
#define PTP_TX_MSG_HEADER (0x0AB4)
#define PTP_TX_MSG_HEADER_MSG_TYPE_ (0x000F0000)
#define PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_ (0x00000000)
#define DMAC_CFG (0xC00)
#define DMAC_CFG_COAL_EN_ BIT(16)
#define DMAC_CFG_CH_ARB_SEL_RX_HIGH_ (0x00000000)
#define DMAC_CFG_MAX_READ_REQ_MASK_ (0x00000070)
#define DMAC_CFG_MAX_READ_REQ_SET_(val) \
((((u32)(val)) << 4) & DMAC_CFG_MAX_READ_REQ_MASK_)
#define DMAC_CFG_MAX_DSPACE_16_ (0x00000000)
#define DMAC_CFG_MAX_DSPACE_32_ (0x00000001)
#define DMAC_CFG_MAX_DSPACE_64_ BIT(1)
#define DMAC_CFG_MAX_DSPACE_128_ (0x00000003)
#define DMAC_COAL_CFG (0xC04)
#define DMAC_COAL_CFG_TIMER_LIMIT_MASK_ (0xFFF00000)
#define DMAC_COAL_CFG_TIMER_LIMIT_SET_(val) \
((((u32)(val)) << 20) & DMAC_COAL_CFG_TIMER_LIMIT_MASK_)
#define DMAC_COAL_CFG_TIMER_TX_START_ BIT(19)
#define DMAC_COAL_CFG_FLUSH_INTS_ BIT(18)
#define DMAC_COAL_CFG_INT_EXIT_COAL_ BIT(17)
#define DMAC_COAL_CFG_CSR_EXIT_COAL_ BIT(16)
#define DMAC_COAL_CFG_TX_THRES_MASK_ (0x0000FF00)
#define DMAC_COAL_CFG_TX_THRES_SET_(val) \
((((u32)(val)) << 8) & DMAC_COAL_CFG_TX_THRES_MASK_)
#define DMAC_COAL_CFG_RX_THRES_MASK_ (0x000000FF)
#define DMAC_COAL_CFG_RX_THRES_SET_(val) \
(((u32)(val)) & DMAC_COAL_CFG_RX_THRES_MASK_)
#define DMAC_OBFF_CFG (0xC08)
#define DMAC_OBFF_TX_THRES_MASK_ (0x0000FF00)
#define DMAC_OBFF_TX_THRES_SET_(val) \
((((u32)(val)) << 8) & DMAC_OBFF_TX_THRES_MASK_)
#define DMAC_OBFF_RX_THRES_MASK_ (0x000000FF)
#define DMAC_OBFF_RX_THRES_SET_(val) \
(((u32)(val)) & DMAC_OBFF_RX_THRES_MASK_)
#define DMAC_CMD (0xC0C)
#define DMAC_CMD_SWR_ BIT(31)
#define DMAC_CMD_TX_SWR_(channel) BIT(24 + (channel))
#define DMAC_CMD_START_T_(channel) BIT(20 + (channel))
#define DMAC_CMD_STOP_T_(channel) BIT(16 + (channel))
#define DMAC_CMD_RX_SWR_(channel) BIT(8 + (channel))
#define DMAC_CMD_START_R_(channel) BIT(4 + (channel))
#define DMAC_CMD_STOP_R_(channel) BIT(0 + (channel))
#define DMAC_INT_STS (0xC10)
#define DMAC_INT_EN_SET (0xC14)
#define DMAC_INT_EN_CLR (0xC18)
#define DMAC_INT_BIT_RXFRM_(channel) BIT(16 + (channel))
#define DMAC_INT_BIT_TX_IOC_(channel) BIT(0 + (channel))
#define RX_CFG_A(channel) (0xC40 + ((channel) << 6))
#define RX_CFG_A_RX_WB_ON_INT_TMR_ BIT(30)
#define RX_CFG_A_RX_WB_THRES_MASK_ (0x1F000000)
#define RX_CFG_A_RX_WB_THRES_SET_(val) \
((((u32)(val)) << 24) & RX_CFG_A_RX_WB_THRES_MASK_)
#define RX_CFG_A_RX_PF_THRES_MASK_ (0x001F0000)
#define RX_CFG_A_RX_PF_THRES_SET_(val) \
((((u32)(val)) << 16) & RX_CFG_A_RX_PF_THRES_MASK_)
#define RX_CFG_A_RX_PF_PRI_THRES_MASK_ (0x00001F00)
#define RX_CFG_A_RX_PF_PRI_THRES_SET_(val) \
((((u32)(val)) << 8) & RX_CFG_A_RX_PF_PRI_THRES_MASK_)
#define RX_CFG_A_RX_HP_WB_EN_ BIT(5)
#define RX_CFG_B(channel) (0xC44 + ((channel) << 6))
#define RX_CFG_B_TS_ALL_RX_ BIT(29)
#define RX_CFG_B_RX_PAD_MASK_ (0x03000000)
#define RX_CFG_B_RX_PAD_0_ (0x00000000)
#define RX_CFG_B_RX_PAD_2_ (0x02000000)
#define RX_CFG_B_RDMABL_512_ (0x00040000)
#define RX_CFG_B_RX_RING_LEN_MASK_ (0x0000FFFF)
#define RX_BASE_ADDRH(channel) (0xC48 + ((channel) << 6))
#define RX_BASE_ADDRL(channel) (0xC4C + ((channel) << 6))
#define RX_HEAD_WRITEBACK_ADDRH(channel) (0xC50 + ((channel) << 6))
#define RX_HEAD_WRITEBACK_ADDRL(channel) (0xC54 + ((channel) << 6))
#define RX_HEAD(channel) (0xC58 + ((channel) << 6))
#define RX_TAIL(channel) (0xC5C + ((channel) << 6))
#define RX_TAIL_SET_TOP_INT_EN_ BIT(30)
#define RX_TAIL_SET_TOP_INT_VEC_EN_ BIT(29)
#define RX_CFG_C(channel) (0xC64 + ((channel) << 6))
#define RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_ BIT(6)
#define RX_CFG_C_RX_INT_EN_R2C_ BIT(4)
#define RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_ BIT(3)
#define RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_ (0x00000007)
#define TX_CFG_A(channel) (0xD40 + ((channel) << 6))
#define TX_CFG_A_TX_HP_WB_ON_INT_TMR_ BIT(30)
#define TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ (0x10000000)
#define TX_CFG_A_TX_PF_THRES_MASK_ (0x001F0000)
#define TX_CFG_A_TX_PF_THRES_SET_(value) \
((((u32)(value)) << 16) & TX_CFG_A_TX_PF_THRES_MASK_)
#define TX_CFG_A_TX_PF_PRI_THRES_MASK_ (0x00001F00)
#define TX_CFG_A_TX_PF_PRI_THRES_SET_(value) \
((((u32)(value)) << 8) & TX_CFG_A_TX_PF_PRI_THRES_MASK_)
#define TX_CFG_A_TX_HP_WB_EN_ BIT(5)
#define TX_CFG_A_TX_HP_WB_THRES_MASK_ (0x0000000F)
#define TX_CFG_A_TX_HP_WB_THRES_SET_(value) \
(((u32)(value)) & TX_CFG_A_TX_HP_WB_THRES_MASK_)
#define TX_CFG_B(channel) (0xD44 + ((channel) << 6))
#define TX_CFG_B_TDMABL_512_ (0x00040000)
#define TX_CFG_B_TX_RING_LEN_MASK_ (0x0000FFFF)
#define TX_BASE_ADDRH(channel) (0xD48 + ((channel) << 6))
#define TX_BASE_ADDRL(channel) (0xD4C + ((channel) << 6))
#define TX_HEAD_WRITEBACK_ADDRH(channel) (0xD50 + ((channel) << 6))
#define TX_HEAD_WRITEBACK_ADDRL(channel) (0xD54 + ((channel) << 6))
#define TX_HEAD(channel) (0xD58 + ((channel) << 6))
#define TX_TAIL(channel) (0xD5C + ((channel) << 6))
#define TX_TAIL_SET_DMAC_INT_EN_ BIT(31)
#define TX_TAIL_SET_TOP_INT_EN_ BIT(30)
#define TX_TAIL_SET_TOP_INT_VEC_EN_ BIT(29)
#define TX_CFG_C(channel) (0xD64 + ((channel) << 6))
#define TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_ BIT(6)
#define TX_CFG_C_TX_DMA_INT_EN_AUTO_CLR_ BIT(5)
#define TX_CFG_C_TX_INT_EN_R2C_ BIT(4)
#define TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_ BIT(3)
#define TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_ (0x00000007)
#define OTP_PWR_DN (0x1000)
#define OTP_PWR_DN_PWRDN_N_ BIT(0)
#define OTP_ADDR_HIGH (0x1004)
#define OTP_ADDR_LOW (0x1008)
#define OTP_PRGM_DATA (0x1010)
#define OTP_PRGM_MODE (0x1014)
#define OTP_PRGM_MODE_BYTE_ BIT(0)
#define OTP_READ_DATA (0x1018)
#define OTP_FUNC_CMD (0x1020)
#define OTP_FUNC_CMD_READ_ BIT(0)
#define OTP_TST_CMD (0x1024)
#define OTP_TST_CMD_PRGVRFY_ BIT(3)
#define OTP_CMD_GO (0x1028)
#define OTP_CMD_GO_GO_ BIT(0)
#define OTP_STATUS (0x1030)
#define OTP_STATUS_BUSY_ BIT(0)
/* MAC statistics registers */
#define STAT_RX_FCS_ERRORS (0x1200)
#define STAT_RX_ALIGNMENT_ERRORS (0x1204)
#define STAT_RX_FRAGMENT_ERRORS (0x1208)
#define STAT_RX_JABBER_ERRORS (0x120C)
#define STAT_RX_UNDERSIZE_FRAME_ERRORS (0x1210)
#define STAT_RX_OVERSIZE_FRAME_ERRORS (0x1214)
#define STAT_RX_DROPPED_FRAMES (0x1218)
#define STAT_RX_UNICAST_BYTE_COUNT (0x121C)
#define STAT_RX_BROADCAST_BYTE_COUNT (0x1220)
#define STAT_RX_MULTICAST_BYTE_COUNT (0x1224)
#define STAT_RX_UNICAST_FRAMES (0x1228)
#define STAT_RX_BROADCAST_FRAMES (0x122C)
#define STAT_RX_MULTICAST_FRAMES (0x1230)
#define STAT_RX_PAUSE_FRAMES (0x1234)
#define STAT_RX_64_BYTE_FRAMES (0x1238)
#define STAT_RX_65_127_BYTE_FRAMES (0x123C)
#define STAT_RX_128_255_BYTE_FRAMES (0x1240)
#define STAT_RX_256_511_BYTES_FRAMES (0x1244)
#define STAT_RX_512_1023_BYTE_FRAMES (0x1248)
#define STAT_RX_1024_1518_BYTE_FRAMES (0x124C)
#define STAT_RX_GREATER_1518_BYTE_FRAMES (0x1250)
#define STAT_RX_TOTAL_FRAMES (0x1254)
#define STAT_EEE_RX_LPI_TRANSITIONS (0x1258)
#define STAT_EEE_RX_LPI_TIME (0x125C)
#define STAT_RX_COUNTER_ROLLOVER_STATUS (0x127C)
#define STAT_TX_FCS_ERRORS (0x1280)
#define STAT_TX_EXCESS_DEFERRAL_ERRORS (0x1284)
#define STAT_TX_CARRIER_ERRORS (0x1288)
#define STAT_TX_BAD_BYTE_COUNT (0x128C)
#define STAT_TX_SINGLE_COLLISIONS (0x1290)
#define STAT_TX_MULTIPLE_COLLISIONS (0x1294)
#define STAT_TX_EXCESSIVE_COLLISION (0x1298)
#define STAT_TX_LATE_COLLISIONS (0x129C)
#define STAT_TX_UNICAST_BYTE_COUNT (0x12A0)
#define STAT_TX_BROADCAST_BYTE_COUNT (0x12A4)
#define STAT_TX_MULTICAST_BYTE_COUNT (0x12A8)
#define STAT_TX_UNICAST_FRAMES (0x12AC)
#define STAT_TX_BROADCAST_FRAMES (0x12B0)
#define STAT_TX_MULTICAST_FRAMES (0x12B4)
#define STAT_TX_PAUSE_FRAMES (0x12B8)
#define STAT_TX_64_BYTE_FRAMES (0x12BC)
#define STAT_TX_65_127_BYTE_FRAMES (0x12C0)
#define STAT_TX_128_255_BYTE_FRAMES (0x12C4)
#define STAT_TX_256_511_BYTES_FRAMES (0x12C8)
#define STAT_TX_512_1023_BYTE_FRAMES (0x12CC)
#define STAT_TX_1024_1518_BYTE_FRAMES (0x12D0)
#define STAT_TX_GREATER_1518_BYTE_FRAMES (0x12D4)
#define STAT_TX_TOTAL_FRAMES (0x12D8)
#define STAT_EEE_TX_LPI_TRANSITIONS (0x12DC)
#define STAT_EEE_TX_LPI_TIME (0x12E0)
#define STAT_TX_COUNTER_ROLLOVER_STATUS (0x12FC)
/* End of Register definitions */
#define LAN743X_MAX_RX_CHANNELS (4)
#define LAN743X_MAX_TX_CHANNELS (1)
struct lan743x_adapter;
#define LAN743X_USED_RX_CHANNELS (4)
#define LAN743X_USED_TX_CHANNELS (1)
#define LAN743X_INT_MOD (400)
#if (LAN743X_USED_RX_CHANNELS > LAN743X_MAX_RX_CHANNELS)
#error Invalid LAN743X_USED_RX_CHANNELS
#endif
#if (LAN743X_USED_TX_CHANNELS > LAN743X_MAX_TX_CHANNELS)
#error Invalid LAN743X_USED_TX_CHANNELS
#endif
/* PCI */
/* SMSC acquired EFAR late 1990's, MCHP acquired SMSC 2012 */
#define PCI_VENDOR_ID_SMSC PCI_VENDOR_ID_EFAR
#define PCI_DEVICE_ID_SMSC_LAN7430 (0x7430)
#define PCI_DEVICE_ID_SMSC_LAN7431 (0x7431)
#define PCI_CONFIG_LENGTH (0x1000)
/* CSR */
#define CSR_LENGTH (0x2000)
#define LAN743X_CSR_FLAG_IS_A0 BIT(0)
#define LAN743X_CSR_FLAG_IS_B0 BIT(1)
#define LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR BIT(8)
struct lan743x_csr {
u32 flags;
u8 __iomem *csr_address;
u32 id_rev;
u32 fpga_rev;
};
/* INTERRUPTS */
typedef void(*lan743x_vector_handler)(void *context, u32 int_sts, u32 flags);
#define LAN743X_VECTOR_FLAG_IRQ_SHARED BIT(0)
#define LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ BIT(1)
#define LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C BIT(2)
#define LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C BIT(3)
#define LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK BIT(4)
#define LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR BIT(5)
#define LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C BIT(6)
#define LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR BIT(7)
#define LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET BIT(8)
#define LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR BIT(9)
#define LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET BIT(10)
#define LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR BIT(11)
#define LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET BIT(12)
#define LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR BIT(13)
#define LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET BIT(14)
#define LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR BIT(15)
struct lan743x_vector {
int irq;
u32 flags;
struct lan743x_adapter *adapter;
int vector_index;
u32 int_mask;
lan743x_vector_handler handler;
void *context;
};
#define LAN743X_MAX_VECTOR_COUNT (8)
struct lan743x_intr {
int flags;
unsigned int irq;
struct lan743x_vector vector_list[LAN743X_MAX_VECTOR_COUNT];
int number_of_vectors;
bool using_vectors;
bool software_isr_flag;
wait_queue_head_t software_isr_wq;
};
#define LAN743X_MAX_FRAME_SIZE (9 * 1024)
/* PHY */
struct lan743x_phy {
bool fc_autoneg;
u8 fc_request_control;
};
/* TX */
struct lan743x_tx_descriptor;
struct lan743x_tx_buffer_info;
#define GPIO_QUEUE_STARTED (0)
#define GPIO_TX_FUNCTION (1)
#define GPIO_TX_COMPLETION (2)
#define GPIO_TX_FRAGMENT (3)
#define TX_FRAME_FLAG_IN_PROGRESS BIT(0)
#define TX_TS_FLAG_TIMESTAMPING_ENABLED BIT(0)
#define TX_TS_FLAG_ONE_STEP_SYNC BIT(1)
struct lan743x_tx {
struct lan743x_adapter *adapter;
u32 ts_flags;
u32 vector_flags;
int channel_number;
int ring_size;
size_t ring_allocation_size;
struct lan743x_tx_descriptor *ring_cpu_ptr;
dma_addr_t ring_dma_ptr;
/* ring_lock: used to prevent concurrent access to tx ring */
spinlock_t ring_lock;
u32 frame_flags;
u32 frame_first;
u32 frame_data0;
u32 frame_tail;
struct lan743x_tx_buffer_info *buffer_info;
__le32 *head_cpu_ptr;
dma_addr_t head_dma_ptr;
int last_head;
int last_tail;
struct napi_struct napi;
struct sk_buff *overflow_skb;
};
void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
bool enable_timestamping,
bool enable_onestep_sync);
/* RX */
struct lan743x_rx_descriptor;
struct lan743x_rx_buffer_info;
struct lan743x_rx {
struct lan743x_adapter *adapter;
u32 vector_flags;
int channel_number;
int ring_size;
size_t ring_allocation_size;
struct lan743x_rx_descriptor *ring_cpu_ptr;
dma_addr_t ring_dma_ptr;
struct lan743x_rx_buffer_info *buffer_info;
__le32 *head_cpu_ptr;
dma_addr_t head_dma_ptr;
u32 last_head;
u32 last_tail;
struct napi_struct napi;
u32 frame_count;
struct sk_buff *skb_head, *skb_tail;
};
struct lan743x_adapter {
struct net_device *netdev;
struct mii_bus *mdiobus;
int msg_enable;
#ifdef CONFIG_PM
u32 wolopts;
#endif
struct pci_dev *pdev;
struct lan743x_csr csr;
struct lan743x_intr intr;
struct lan743x_gpio gpio;
struct lan743x_ptp ptp;
u8 mac_address[ETH_ALEN];
struct lan743x_phy phy;
struct lan743x_tx tx[LAN743X_MAX_TX_CHANNELS];
struct lan743x_rx rx[LAN743X_MAX_RX_CHANNELS];
#define LAN743X_ADAPTER_FLAG_OTP BIT(0)
u32 flags;
};
#define LAN743X_COMPONENT_FLAG_RX(channel) BIT(20 + (channel))
#define INTR_FLAG_IRQ_REQUESTED(vector_index) BIT(0 + vector_index)
#define INTR_FLAG_MSI_ENABLED BIT(8)
#define INTR_FLAG_MSIX_ENABLED BIT(9)
#define MAC_MII_READ 1
#define MAC_MII_WRITE 0
#define PHY_FLAG_OPENED BIT(0)
#define PHY_FLAG_ATTACHED BIT(1)
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
#define DMA_ADDR_HIGH32(dma_addr) ((u32)(((dma_addr) >> 32) & 0xFFFFFFFF))
#else
#define DMA_ADDR_HIGH32(dma_addr) ((u32)(0))
#endif
#define DMA_ADDR_LOW32(dma_addr) ((u32)((dma_addr) & 0xFFFFFFFF))
#define DMA_DESCRIPTOR_SPACING_16 (16)
#define DMA_DESCRIPTOR_SPACING_32 (32)
#define DMA_DESCRIPTOR_SPACING_64 (64)
#define DMA_DESCRIPTOR_SPACING_128 (128)
#define DEFAULT_DMA_DESCRIPTOR_SPACING (L1_CACHE_BYTES)
#define DMAC_CHANNEL_STATE_SET(start_bit, stop_bit) \
(((start_bit) ? 2 : 0) | ((stop_bit) ? 1 : 0))
#define DMAC_CHANNEL_STATE_INITIAL DMAC_CHANNEL_STATE_SET(0, 0)
#define DMAC_CHANNEL_STATE_STARTED DMAC_CHANNEL_STATE_SET(1, 0)
#define DMAC_CHANNEL_STATE_STOP_PENDING DMAC_CHANNEL_STATE_SET(1, 1)
#define DMAC_CHANNEL_STATE_STOPPED DMAC_CHANNEL_STATE_SET(0, 1)
/* TX Descriptor bits */
#define TX_DESC_DATA0_DTYPE_MASK_ (0xC0000000)
#define TX_DESC_DATA0_DTYPE_DATA_ (0x00000000)
#define TX_DESC_DATA0_DTYPE_EXT_ (0x40000000)
#define TX_DESC_DATA0_FS_ (0x20000000)
#define TX_DESC_DATA0_LS_ (0x10000000)
#define TX_DESC_DATA0_EXT_ (0x08000000)
#define TX_DESC_DATA0_IOC_ (0x04000000)
#define TX_DESC_DATA0_ICE_ (0x00400000)
#define TX_DESC_DATA0_IPE_ (0x00200000)
#define TX_DESC_DATA0_TPE_ (0x00100000)
#define TX_DESC_DATA0_FCS_ (0x00020000)
#define TX_DESC_DATA0_TSE_ (0x00010000)
#define TX_DESC_DATA0_BUF_LENGTH_MASK_ (0x0000FFFF)
#define TX_DESC_DATA0_EXT_LSO_ (0x00200000)
#define TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_ (0x000FFFFF)
#define TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_ (0x3FFF0000)
struct lan743x_tx_descriptor {
__le32 data0;
__le32 data1;
__le32 data2;
__le32 data3;
} __aligned(DEFAULT_DMA_DESCRIPTOR_SPACING);
#define TX_BUFFER_INFO_FLAG_ACTIVE BIT(0)
#define TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED BIT(1)
#define TX_BUFFER_INFO_FLAG_IGNORE_SYNC BIT(2)
#define TX_BUFFER_INFO_FLAG_SKB_FRAGMENT BIT(3)
struct lan743x_tx_buffer_info {
int flags;
struct sk_buff *skb;
dma_addr_t dma_ptr;
unsigned int buffer_length;
};
#define LAN743X_TX_RING_SIZE (50)
/* OWN bit is set. ie, Descs are owned by RX DMAC */
#define RX_DESC_DATA0_OWN_ (0x00008000)
/* OWN bit is clear. ie, Descs are owned by host */
#define RX_DESC_DATA0_FS_ (0x80000000)
#define RX_DESC_DATA0_LS_ (0x40000000)
#define RX_DESC_DATA0_FRAME_LENGTH_MASK_ (0x3FFF0000)
#define RX_DESC_DATA0_FRAME_LENGTH_GET_(data0) \
(((data0) & RX_DESC_DATA0_FRAME_LENGTH_MASK_) >> 16)
#define RX_DESC_DATA0_EXT_ (0x00004000)
#define RX_DESC_DATA0_BUF_LENGTH_MASK_ (0x00003FFF)
#define RX_DESC_DATA2_TS_NS_MASK_ (0x3FFFFFFF)
#if ((NET_IP_ALIGN != 0) && (NET_IP_ALIGN != 2))
#error NET_IP_ALIGN must be 0 or 2
#endif
#define RX_HEAD_PADDING NET_IP_ALIGN
struct lan743x_rx_descriptor {
__le32 data0;
__le32 data1;
__le32 data2;
__le32 data3;
} __aligned(DEFAULT_DMA_DESCRIPTOR_SPACING);
#define RX_BUFFER_INFO_FLAG_ACTIVE BIT(0)
struct lan743x_rx_buffer_info {
int flags;
struct sk_buff *skb;
dma_addr_t dma_ptr;
unsigned int buffer_length;
};
#define LAN743X_RX_RING_SIZE (65)
#define RX_PROCESS_RESULT_NOTHING_TO_DO (0)
#define RX_PROCESS_RESULT_BUFFER_RECEIVED (1)
u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset);
void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, u32 data);
#endif /* _LAN743X_H */
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