/*
 * Broadcom BCM7xxx System Port Ethernet MAC driver
 *
 * Copyright (C) 2014 Broadcom Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __BCM_SYSPORT_H
#define __BCM_SYSPORT_H

#include <linux/if_vlan.h>

/* Receive/transmit descriptor format */
#define DESC_ADDR_HI_STATUS_LEN 0x00
#define  DESC_ADDR_HI_SHIFT     0
#define  DESC_ADDR_HI_MASK      0xff
#define  DESC_STATUS_SHIFT      8
#define  DESC_STATUS_MASK       0x3ff
#define  DESC_LEN_SHIFT         18
#define  DESC_LEN_MASK          0x7fff
#define DESC_ADDR_LO            0x04

/* HW supports 40-bit addressing hence the */
#define DESC_SIZE               (WORDS_PER_DESC * sizeof(u32))

/* Default RX buffer allocation size */
#define RX_BUF_LENGTH           2048

/* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(4) + FCS(4) = 1526.
 * 1536 is multiple of 256 bytes
 */
#define ENET_BRCM_TAG_LEN       4
#define ENET_PAD                10
#define UMAC_MAX_MTU_SIZE       (ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
                                 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)

/* Transmit status block */
struct bcm_tsb {
        u32 pcp_dei_vid;
#define PCP_DEI_MASK            0xf
#define VID_SHIFT               4
#define VID_MASK                0xfff
        u32 l4_ptr_dest_map;
#define L4_CSUM_PTR_MASK        0x1ff
#define L4_PTR_SHIFT            9
#define L4_PTR_MASK             0x1ff
#define L4_UDP                  (1 << 18)
#define L4_LENGTH_VALID         (1 << 19)
#define DEST_MAP_SHIFT          20
#define DEST_MAP_MASK           0x1ff
};

/* Receive status block uses the same
 * definitions as the DMA descriptor
 */
struct bcm_rsb {
        u32 rx_status_len;
        u32 brcm_egress_tag;
};

/* Common Receive/Transmit status bits */
#define DESC_L4_CSUM            (1 << 7)
#define DESC_SOP                (1 << 8)
#define DESC_EOP                (1 << 9)

/* Receive Status bits */
#define RX_STATUS_UCAST                 0
#define RX_STATUS_BCAST                 0x04
#define RX_STATUS_MCAST                 0x08
#define RX_STATUS_L2_MCAST              0x0c
#define RX_STATUS_ERR                   (1 << 4)
#define RX_STATUS_OVFLOW                (1 << 5)
#define RX_STATUS_PARSE_FAIL            (1 << 6)

/* Transmit Status bits */
#define TX_STATUS_VLAN_NO_ACT           0x00
#define TX_STATUS_VLAN_PCP_TSB          0x01
#define TX_STATUS_VLAN_QUEUE            0x02
#define TX_STATUS_VLAN_VID_TSB          0x03
#define TX_STATUS_OWR_CRC               (1 << 2)
#define TX_STATUS_APP_CRC               (1 << 3)
#define TX_STATUS_BRCM_TAG_NO_ACT       0
#define TX_STATUS_BRCM_TAG_ZERO         0x10
#define TX_STATUS_BRCM_TAG_ONE_QUEUE    0x20
#define TX_STATUS_BRCM_TAG_ONE_TSB      0x30
#define TX_STATUS_SKIP_BYTES            (1 << 6)

/* Specific register definitions */
#define SYS_PORT_TOPCTRL_OFFSET         0
#define REV_CNTL                        0x00
#define  REV_MASK                       0xffff

#define RX_FLUSH_CNTL                   0x04
#define  RX_FLUSH                       (1 << 0)

#define TX_FLUSH_CNTL                   0x08
#define  TX_FLUSH                       (1 << 0)

#define MISC_CNTL                       0x0c
#define  SYS_CLK_SEL                    (1 << 0)
#define  TDMA_EOP_SEL                   (1 << 1)

/* Level-2 Interrupt controller offsets and defines */
#define SYS_PORT_INTRL2_0_OFFSET        0x200
#define SYS_PORT_INTRL2_1_OFFSET        0x240
#define INTRL2_CPU_STATUS               0x00
#define INTRL2_CPU_SET                  0x04
#define INTRL2_CPU_CLEAR                0x08
#define INTRL2_CPU_MASK_STATUS          0x0c
#define INTRL2_CPU_MASK_SET             0x10
#define INTRL2_CPU_MASK_CLEAR           0x14

/* Level-2 instance 0 interrupt bits */
#define INTRL2_0_GISB_ERR               (1 << 0)
#define INTRL2_0_RBUF_OVFLOW            (1 << 1)
#define INTRL2_0_TBUF_UNDFLOW           (1 << 2)
#define INTRL2_0_MPD                    (1 << 3)
#define INTRL2_0_BRCM_MATCH_TAG         (1 << 4)
#define INTRL2_0_RDMA_MBDONE            (1 << 5)
#define INTRL2_0_OVER_MAX_THRESH        (1 << 6)
#define INTRL2_0_BELOW_HYST_THRESH      (1 << 7)
#define INTRL2_0_FREE_LIST_EMPTY        (1 << 8)
#define INTRL2_0_TX_RING_FULL           (1 << 9)
#define INTRL2_0_DESC_ALLOC_ERR         (1 << 10)
#define INTRL2_0_UNEXP_PKTSIZE_ACK      (1 << 11)

/* RXCHK offset and defines */
#define SYS_PORT_RXCHK_OFFSET           0x300

#define RXCHK_CONTROL                   0x00
#define  RXCHK_EN                       (1 << 0)
#define  RXCHK_SKIP_FCS                 (1 << 1)
#define  RXCHK_BAD_CSUM_DIS             (1 << 2)
#define  RXCHK_BRCM_TAG_EN              (1 << 3)
#define  RXCHK_BRCM_TAG_MATCH_SHIFT     4
#define  RXCHK_BRCM_TAG_MATCH_MASK      0xff
#define  RXCHK_PARSE_TNL                (1 << 12)
#define  RXCHK_VIOL_EN                  (1 << 13)
#define  RXCHK_VIOL_DIS                 (1 << 14)
#define  RXCHK_INCOM_PKT                (1 << 15)
#define  RXCHK_V6_DUPEXT_EN             (1 << 16)
#define  RXCHK_V6_DUPEXT_DIS            (1 << 17)
#define  RXCHK_ETHERTYPE_DIS            (1 << 18)
#define  RXCHK_L2_HDR_DIS               (1 << 19)
#define  RXCHK_L3_HDR_DIS               (1 << 20)
#define  RXCHK_MAC_RX_ERR_DIS           (1 << 21)
#define  RXCHK_PARSE_AUTH               (1 << 22)

#define RXCHK_BRCM_TAG0                 0x04
#define RXCHK_BRCM_TAG(i)               ((i) * RXCHK_BRCM_TAG0)
#define RXCHK_BRCM_TAG0_MASK            0x24
#define RXCHK_BRCM_TAG_MASK(i)          ((i) * RXCHK_BRCM_TAG0_MASK)
#define RXCHK_BRCM_TAG_MATCH_STATUS     0x44
#define RXCHK_ETHERTYPE                 0x48
#define RXCHK_BAD_CSUM_CNTR             0x4C
#define RXCHK_OTHER_DISC_CNTR           0x50

/* TXCHCK offsets and defines */
#define SYS_PORT_TXCHK_OFFSET           0x380
#define TXCHK_PKT_RDY_THRESH            0x00

/* Receive buffer offset and defines */
#define SYS_PORT_RBUF_OFFSET            0x400

#define RBUF_CONTROL                    0x00
#define  RBUF_RSB_EN                    (1 << 0)
#define  RBUF_4B_ALGN                   (1 << 1)
#define  RBUF_BRCM_TAG_STRIP            (1 << 2)
#define  RBUF_BAD_PKT_DISC              (1 << 3)
#define  RBUF_RESUME_THRESH_SHIFT       4
#define  RBUF_RESUME_THRESH_MASK        0xff
#define  RBUF_OK_TO_SEND_SHIFT          12
#define  RBUF_OK_TO_SEND_MASK           0xff
#define  RBUF_CRC_REPLACE               (1 << 20)
#define  RBUF_OK_TO_SEND_MODE           (1 << 21)
#define  RBUF_RSB_SWAP                  (1 << 22)
#define  RBUF_ACPI_EN                   (1 << 23)

#define RBUF_PKT_RDY_THRESH             0x04

#define RBUF_STATUS                     0x08
#define  RBUF_WOL_MODE                  (1 << 0)
#define  RBUF_MPD                       (1 << 1)
#define  RBUF_ACPI                      (1 << 2)

#define RBUF_OVFL_DISC_CNTR             0x0c
#define RBUF_ERR_PKT_CNTR               0x10

/* Transmit buffer offset and defines */
#define SYS_PORT_TBUF_OFFSET            0x600

#define TBUF_CONTROL                    0x00
#define  TBUF_BP_EN                     (1 << 0)
#define  TBUF_MAX_PKT_THRESH_SHIFT      1
#define  TBUF_MAX_PKT_THRESH_MASK       0x1f
#define  TBUF_FULL_THRESH_SHIFT         8
#define  TBUF_FULL_THRESH_MASK          0x1f

/* UniMAC offset and defines */
#define SYS_PORT_UMAC_OFFSET            0x800

#define UMAC_CMD                        0x008
#define  CMD_TX_EN                      (1 << 0)
#define  CMD_RX_EN                      (1 << 1)
#define  CMD_SPEED_SHIFT                2
#define  CMD_SPEED_10                   0
#define  CMD_SPEED_100                  1
#define  CMD_SPEED_1000                 2
#define  CMD_SPEED_2500                 3
#define  CMD_SPEED_MASK                 3
#define  CMD_PROMISC                    (1 << 4)
#define  CMD_PAD_EN                     (1 << 5)
#define  CMD_CRC_FWD                    (1 << 6)
#define  CMD_PAUSE_FWD                  (1 << 7)
#define  CMD_RX_PAUSE_IGNORE            (1 << 8)
#define  CMD_TX_ADDR_INS                (1 << 9)
#define  CMD_HD_EN                      (1 << 10)
#define  CMD_SW_RESET                   (1 << 13)
#define  CMD_LCL_LOOP_EN                (1 << 15)
#define  CMD_AUTO_CONFIG                (1 << 22)
#define  CMD_CNTL_FRM_EN                (1 << 23)
#define  CMD_NO_LEN_CHK                 (1 << 24)
#define  CMD_RMT_LOOP_EN                (1 << 25)
#define  CMD_PRBL_EN                    (1 << 27)
#define  CMD_TX_PAUSE_IGNORE            (1 << 28)
#define  CMD_TX_RX_EN                   (1 << 29)
#define  CMD_RUNT_FILTER_DIS            (1 << 30)

#define UMAC_MAC0                       0x00c
#define UMAC_MAC1                       0x010
#define UMAC_MAX_FRAME_LEN              0x014

#define UMAC_TX_FLUSH                   0x334

#define UMAC_MIB_START                  0x400

/* There is a 0xC gap between the end of RX and beginning of TX stats and then
 * between the end of TX stats and the beginning of the RX RUNT
 */
#define UMAC_MIB_STAT_OFFSET            0xc

#define UMAC_MIB_CTRL                   0x580
#define  MIB_RX_CNT_RST                 (1 << 0)
#define  MIB_RUNT_CNT_RST               (1 << 1)
#define  MIB_TX_CNT_RST                 (1 << 2)

#define UMAC_MPD_CTRL                   0x620
#define  MPD_EN                         (1 << 0)
#define  MSEQ_LEN_SHIFT                 16
#define  MSEQ_LEN_MASK                  0xff
#define  PSW_EN                         (1 << 27)

#define UMAC_PSW_MS                     0x624
#define UMAC_PSW_LS                     0x628
#define UMAC_MDF_CTRL                   0x650
#define UMAC_MDF_ADDR                   0x654

/* Receive DMA offset and defines */
#define SYS_PORT_RDMA_OFFSET            0x2000

#define RDMA_CONTROL                    0x1000
#define  RDMA_EN                        (1 << 0)
#define  RDMA_RING_CFG                  (1 << 1)
#define  RDMA_DISC_EN                   (1 << 2)
#define  RDMA_BUF_DATA_OFFSET_SHIFT     4
#define  RDMA_BUF_DATA_OFFSET_MASK      0x3ff

#define RDMA_STATUS                     0x1004
#define  RDMA_DISABLED                  (1 << 0)
#define  RDMA_DESC_RAM_INIT_BUSY        (1 << 1)
#define  RDMA_BP_STATUS                 (1 << 2)

#define RDMA_SCB_BURST_SIZE             0x1008

#define RDMA_RING_BUF_SIZE              0x100c
#define  RDMA_RING_SIZE_SHIFT           16

#define RDMA_WRITE_PTR_HI               0x1010
#define RDMA_WRITE_PTR_LO               0x1014
#define RDMA_PROD_INDEX                 0x1018
#define  RDMA_PROD_INDEX_MASK           0xffff

#define RDMA_CONS_INDEX                 0x101c
#define  RDMA_CONS_INDEX_MASK           0xffff

#define RDMA_START_ADDR_HI              0x1020
#define RDMA_START_ADDR_LO              0x1024
#define RDMA_END_ADDR_HI                0x1028
#define RDMA_END_ADDR_LO                0x102c

#define RDMA_MBDONE_INTR                0x1030
#define  RDMA_INTR_THRESH_MASK          0x1ff
#define  RDMA_TIMEOUT_SHIFT             16
#define  RDMA_TIMEOUT_MASK              0xffff

#define RDMA_XON_XOFF_THRESH            0x1034
#define  RDMA_XON_XOFF_THRESH_MASK      0xffff
#define  RDMA_XOFF_THRESH_SHIFT         16

#define RDMA_READ_PTR_HI                0x1038
#define RDMA_READ_PTR_LO                0x103c

#define RDMA_OVERRIDE                   0x1040
#define  RDMA_LE_MODE                   (1 << 0)
#define  RDMA_REG_MODE                  (1 << 1)

#define RDMA_TEST                       0x1044
#define  RDMA_TP_OUT_SEL                (1 << 0)
#define  RDMA_MEM_SEL                   (1 << 1)

#define RDMA_DEBUG                      0x1048

/* Transmit DMA offset and defines */
#define TDMA_NUM_RINGS                  32      /* rings = queues */
#define TDMA_PORT_SIZE                  DESC_SIZE /* two 32-bits words */

#define SYS_PORT_TDMA_OFFSET            0x4000
#define TDMA_WRITE_PORT_OFFSET          0x0000
#define TDMA_WRITE_PORT_HI(i)           (TDMA_WRITE_PORT_OFFSET + \
                                        (i) * TDMA_PORT_SIZE)
#define TDMA_WRITE_PORT_LO(i)           (TDMA_WRITE_PORT_OFFSET + \
                                        sizeof(u32) + (i) * TDMA_PORT_SIZE)

#define TDMA_READ_PORT_OFFSET           (TDMA_WRITE_PORT_OFFSET + \
                                        (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
#define TDMA_READ_PORT_HI(i)            (TDMA_READ_PORT_OFFSET + \
                                        (i) * TDMA_PORT_SIZE)
#define TDMA_READ_PORT_LO(i)            (TDMA_READ_PORT_OFFSET + \
                                        sizeof(u32) + (i) * TDMA_PORT_SIZE)

#define TDMA_READ_PORT_CMD_OFFSET       (TDMA_READ_PORT_OFFSET + \
                                        (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
#define TDMA_READ_PORT_CMD(i)           (TDMA_READ_PORT_CMD_OFFSET + \
                                        (i) * sizeof(u32))

#define TDMA_DESC_RING_00_BASE          (TDMA_READ_PORT_CMD_OFFSET + \
                                        (TDMA_NUM_RINGS * sizeof(u32)))

/* Register offsets and defines relatives to a specific ring number */
#define RING_HEAD_TAIL_PTR              0x00
#define  RING_HEAD_MASK                 0x7ff
#define  RING_TAIL_SHIFT                11
#define  RING_TAIL_MASK                 0x7ff
#define  RING_FLUSH                     (1 << 24)
#define  RING_EN                        (1 << 25)

#define RING_COUNT                      0x04
#define  RING_COUNT_MASK                0x7ff
#define  RING_BUFF_DONE_SHIFT           11
#define  RING_BUFF_DONE_MASK            0x7ff

#define RING_MAX_HYST                   0x08
#define  RING_MAX_THRESH_MASK           0x7ff
#define  RING_HYST_THRESH_SHIFT         11
#define  RING_HYST_THRESH_MASK          0x7ff

#define RING_INTR_CONTROL               0x0c
#define  RING_INTR_THRESH_MASK          0x7ff
#define  RING_EMPTY_INTR_EN             (1 << 15)
#define  RING_TIMEOUT_SHIFT             16
#define  RING_TIMEOUT_MASK              0xffff

#define RING_PROD_CONS_INDEX            0x10
#define  RING_PROD_INDEX_MASK           0xffff
#define  RING_CONS_INDEX_SHIFT          16
#define  RING_CONS_INDEX_MASK           0xffff

#define RING_MAPPING                    0x14
#define  RING_QID_MASK                  0x3
#define  RING_PORT_ID_SHIFT             3
#define  RING_PORT_ID_MASK              0x7
#define  RING_IGNORE_STATUS             (1 << 6)
#define  RING_FAILOVER_EN               (1 << 7)
#define  RING_CREDIT_SHIFT              8
#define  RING_CREDIT_MASK               0xffff

#define RING_PCP_DEI_VID                0x18
#define  RING_VID_MASK                  0x7ff
#define  RING_DEI                       (1 << 12)
#define  RING_PCP_SHIFT                 13
#define  RING_PCP_MASK                  0x7
#define  RING_PKT_SIZE_ADJ_SHIFT        16
#define  RING_PKT_SIZE_ADJ_MASK         0xf

#define TDMA_DESC_RING_SIZE             28

/* Defininition for a given TX ring base address */
#define TDMA_DESC_RING_BASE(i)          (TDMA_DESC_RING_00_BASE + \
                                        ((i) * TDMA_DESC_RING_SIZE))

/* Ring indexed register addreses */
#define TDMA_DESC_RING_HEAD_TAIL_PTR(i) (TDMA_DESC_RING_BASE(i) + \
                                        RING_HEAD_TAIL_PTR)
#define TDMA_DESC_RING_COUNT(i)         (TDMA_DESC_RING_BASE(i) + \
                                        RING_COUNT)
#define TDMA_DESC_RING_MAX_HYST(i)      (TDMA_DESC_RING_BASE(i) + \
                                        RING_MAX_HYST)
#define TDMA_DESC_RING_INTR_CONTROL(i)  (TDMA_DESC_RING_BASE(i) + \
                                        RING_INTR_CONTROL)
#define TDMA_DESC_RING_PROD_CONS_INDEX(i) \
                                        (TDMA_DESC_RING_BASE(i) + \
                                        RING_PROD_CONS_INDEX)
#define TDMA_DESC_RING_MAPPING(i)       (TDMA_DESC_RING_BASE(i) + \
                                        RING_MAPPING)
#define TDMA_DESC_RING_PCP_DEI_VID(i)   (TDMA_DESC_RING_BASE(i) + \
                                        RING_PCP_DEI_VID)

#define TDMA_CONTROL                    0x600
#define  TDMA_EN                        (1 << 0)
#define  TSB_EN                         (1 << 1)
#define  TSB_SWAP                       (1 << 2)
#define  ACB_ALGO                       (1 << 3)
#define  BUF_DATA_OFFSET_SHIFT          4
#define  BUF_DATA_OFFSET_MASK           0x3ff
#define  VLAN_EN                        (1 << 14)
#define  SW_BRCM_TAG                    (1 << 15)
#define  WNC_KPT_SIZE_UPDATE            (1 << 16)
#define  SYNC_PKT_SIZE                  (1 << 17)
#define  ACH_TXDONE_DELAY_SHIFT         18
#define  ACH_TXDONE_DELAY_MASK          0xff

#define TDMA_STATUS                     0x604
#define  TDMA_DISABLED                  (1 << 0)
#define  TDMA_LL_RAM_INIT_BUSY          (1 << 1)

#define TDMA_SCB_BURST_SIZE             0x608
#define TDMA_OVER_MAX_THRESH_STATUS     0x60c
#define TDMA_OVER_HYST_THRESH_STATUS    0x610
#define TDMA_TPID                       0x614

#define TDMA_FREE_LIST_HEAD_TAIL_PTR    0x618
#define  TDMA_FREE_HEAD_MASK            0x7ff
#define  TDMA_FREE_TAIL_SHIFT           11
#define  TDMA_FREE_TAIL_MASK            0x7ff

#define TDMA_FREE_LIST_COUNT            0x61c
#define  TDMA_FREE_LIST_COUNT_MASK      0x7ff

#define TDMA_TIER2_ARB_CTRL             0x620
#define  TDMA_ARB_MODE_RR               0
#define  TDMA_ARB_MODE_WEIGHT_RR        0x1
#define  TDMA_ARB_MODE_STRICT           0x2
#define  TDMA_ARB_MODE_DEFICIT_RR       0x3
#define  TDMA_CREDIT_SHIFT              4
#define  TDMA_CREDIT_MASK               0xffff

#define TDMA_TIER1_ARB_0_CTRL           0x624
#define  TDMA_ARB_EN                    (1 << 0)

#define TDMA_TIER1_ARB_0_QUEUE_EN       0x628
#define TDMA_TIER1_ARB_1_CTRL           0x62c
#define TDMA_TIER1_ARB_1_QUEUE_EN       0x630
#define TDMA_TIER1_ARB_2_CTRL           0x634
#define TDMA_TIER1_ARB_2_QUEUE_EN       0x638
#define TDMA_TIER1_ARB_3_CTRL           0x63c
#define TDMA_TIER1_ARB_3_QUEUE_EN       0x640

#define TDMA_SCB_ENDIAN_OVERRIDE        0x644
#define  TDMA_LE_MODE                   (1 << 0)
#define  TDMA_REG_MODE                  (1 << 1)

#define TDMA_TEST                       0x648
#define  TDMA_TP_OUT_SEL                (1 << 0)
#define  TDMA_MEM_TM                    (1 << 1)

#define TDMA_DEBUG                      0x64c

/* Transmit/Receive descriptor */
struct dma_desc {
        u32     addr_status_len;
        u32     addr_lo;
};

/* Number of Receive hardware descriptor words */
#define NUM_HW_RX_DESC_WORDS            1024
/* Real number of usable descriptors */
#define NUM_RX_DESC                     (NUM_HW_RX_DESC_WORDS / WORDS_PER_DESC)

/* Internal linked-list RAM has up to 1536 entries */
#define NUM_TX_DESC                     1536

#define WORDS_PER_DESC                  (sizeof(struct dma_desc) / sizeof(u32))

/* Rx/Tx common counter group.*/
struct bcm_sysport_pkt_counters {
        u32     cnt_64;         /* RO Received/Transmited 64 bytes packet */
        u32     cnt_127;        /* RO Rx/Tx 127 bytes packet */
        u32     cnt_255;        /* RO Rx/Tx 65-255 bytes packet */
        u32     cnt_511;        /* RO Rx/Tx 256-511 bytes packet */
        u32     cnt_1023;       /* RO Rx/Tx 512-1023 bytes packet */
        u32     cnt_1518;       /* RO Rx/Tx 1024-1518 bytes packet */
        u32     cnt_mgv;        /* RO Rx/Tx 1519-1522 good VLAN packet */
        u32     cnt_2047;       /* RO Rx/Tx 1522-2047 bytes packet*/
        u32     cnt_4095;       /* RO Rx/Tx 2048-4095 bytes packet*/
        u32     cnt_9216;       /* RO Rx/Tx 4096-9216 bytes packet*/
};

/* RSV, Receive Status Vector */
struct bcm_sysport_rx_counters {
        struct  bcm_sysport_pkt_counters pkt_cnt;
        u32     pkt;            /* RO (0x428) Received pkt count*/
        u32     bytes;          /* RO Received byte count */
        u32     mca;            /* RO # of Received multicast pkt */
        u32     bca;            /* RO # of Receive broadcast pkt */
        u32     fcs;            /* RO # of Received FCS error  */
        u32     cf;             /* RO # of Received control frame pkt*/
        u32     pf;             /* RO # of Received pause frame pkt */
        u32     uo;             /* RO # of unknown op code pkt */
        u32     aln;            /* RO # of alignment error count */
        u32     flr;            /* RO # of frame length out of range count */
        u32     cde;            /* RO # of code error pkt */
        u32     fcr;            /* RO # of carrier sense error pkt */
        u32     ovr;            /* RO # of oversize pkt*/
        u32     jbr;            /* RO # of jabber count */
        u32     mtue;           /* RO # of MTU error pkt*/
        u32     pok;            /* RO # of Received good pkt */
        u32     uc;             /* RO # of unicast pkt */
        u32     ppp;            /* RO # of PPP pkt */
        u32     rcrc;           /* RO (0x470),# of CRC match pkt */
};

/* TSV, Transmit Status Vector */
struct bcm_sysport_tx_counters {
        struct bcm_sysport_pkt_counters pkt_cnt;
        u32     pkts;           /* RO (0x4a8) Transmited pkt */
        u32     mca;            /* RO # of xmited multicast pkt */
        u32     bca;            /* RO # of xmited broadcast pkt */
        u32     pf;             /* RO # of xmited pause frame count */
        u32     cf;             /* RO # of xmited control frame count */
        u32     fcs;            /* RO # of xmited FCS error count */
        u32     ovr;            /* RO # of xmited oversize pkt */
        u32     drf;            /* RO # of xmited deferral pkt */
        u32     edf;            /* RO # of xmited Excessive deferral pkt*/
        u32     scl;            /* RO # of xmited single collision pkt */
        u32     mcl;            /* RO # of xmited multiple collision pkt*/
        u32     lcl;            /* RO # of xmited late collision pkt */
        u32     ecl;            /* RO # of xmited excessive collision pkt*/
        u32     frg;            /* RO # of xmited fragments pkt*/
        u32     ncl;            /* RO # of xmited total collision count */
        u32     jbr;            /* RO # of xmited jabber count*/
        u32     bytes;          /* RO # of xmited byte count */
        u32     pok;            /* RO # of xmited good pkt */
        u32     uc;             /* RO (0x4f0) # of xmited unicast pkt */
};

struct bcm_sysport_mib {
        struct bcm_sysport_rx_counters rx;
        struct bcm_sysport_tx_counters tx;
        u32 rx_runt_cnt;
        u32 rx_runt_fcs;
        u32 rx_runt_fcs_align;
        u32 rx_runt_bytes;
        u32 rxchk_bad_csum;
        u32 rxchk_other_pkt_disc;
        u32 rbuf_ovflow_cnt;
        u32 rbuf_err_cnt;
        u32 alloc_rx_buff_failed;
        u32 rx_dma_failed;
        u32 tx_dma_failed;
};

/* HW maintains a large list of counters */
enum bcm_sysport_stat_type {
        BCM_SYSPORT_STAT_NETDEV = -1,
        BCM_SYSPORT_STAT_MIB_RX,
        BCM_SYSPORT_STAT_MIB_TX,
        BCM_SYSPORT_STAT_RUNT,
        BCM_SYSPORT_STAT_RXCHK,
        BCM_SYSPORT_STAT_RBUF,
        BCM_SYSPORT_STAT_SOFT,
};

/* Macros to help define ethtool statistics */
#define STAT_NETDEV(m) { \
        .stat_string = __stringify(m), \
        .stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
        .stat_offset = offsetof(struct net_device_stats, m), \
        .type = BCM_SYSPORT_STAT_NETDEV, \
}

#define STAT_MIB(str, m, _type) { \
        .stat_string = str, \
        .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
        .stat_offset = offsetof(struct bcm_sysport_priv, m), \
        .type = _type, \
}

#define STAT_MIB_RX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_RX)
#define STAT_MIB_TX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_TX)
#define STAT_RUNT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_RUNT)
#define STAT_MIB_SOFT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_SOFT)

#define STAT_RXCHK(str, m, ofs) { \
        .stat_string = str, \
        .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
        .stat_offset = offsetof(struct bcm_sysport_priv, m), \
        .type = BCM_SYSPORT_STAT_RXCHK, \
        .reg_offset = ofs, \
}

#define STAT_RBUF(str, m, ofs) { \
        .stat_string = str, \
        .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
        .stat_offset = offsetof(struct bcm_sysport_priv, m), \
        .type = BCM_SYSPORT_STAT_RBUF, \
        .reg_offset = ofs, \
}

struct bcm_sysport_stats {
        char stat_string[ETH_GSTRING_LEN];
        int stat_sizeof;
        int stat_offset;
        enum bcm_sysport_stat_type type;
        /* reg offset from UMAC base for misc counters */
        u16 reg_offset;
};

/* Software house keeping helper structure */
struct bcm_sysport_cb {
        struct sk_buff  *skb;           /* SKB for RX packets */
        void __iomem    *bd_addr;       /* Buffer descriptor PHYS addr */

        DEFINE_DMA_UNMAP_ADDR(dma_addr);
        DEFINE_DMA_UNMAP_LEN(dma_len);
};

/* Software view of the TX ring */
struct bcm_sysport_tx_ring {
        spinlock_t      lock;           /* Ring lock for tx reclaim/xmit */
        struct napi_struct napi;        /* NAPI per tx queue */
        dma_addr_t      desc_dma;       /* DMA cookie */
        unsigned int    index;          /* Ring index */
        unsigned int    size;           /* Ring current size */
        unsigned int    alloc_size;     /* Ring one-time allocated size */
        unsigned int    desc_count;     /* Number of descriptors */
        unsigned int    curr_desc;      /* Current descriptor */
        unsigned int    c_index;        /* Last consumer index */
        unsigned int    p_index;        /* Current producer index */
        struct bcm_sysport_cb *cbs;     /* Transmit control blocks */
        struct dma_desc *desc_cpu;      /* CPU view of the descriptor */
        struct bcm_sysport_priv *priv;  /* private context backpointer */
};

/* Driver private structure */
struct bcm_sysport_priv {
        void __iomem            *base;
        u32                     irq0_stat;
        u32                     irq0_mask;
        u32                     irq1_stat;
        u32                     irq1_mask;
        struct napi_struct      napi ____cacheline_aligned;
        struct net_device       *netdev;
        struct platform_device  *pdev;
        int                     irq0;
        int                     irq1;
        int                     wol_irq;

        /* Transmit rings */
        struct bcm_sysport_tx_ring tx_rings[TDMA_NUM_RINGS];

        /* Receive queue */
        void __iomem            *rx_bds;
        struct bcm_sysport_cb   *rx_cbs;
        unsigned int            num_rx_bds;
        unsigned int            rx_read_ptr;
        unsigned int            rx_c_index;

        /* PHY device */
        struct device_node      *phy_dn;
        phy_interface_t         phy_interface;
        int                     old_pause;
        int                     old_link;
        int                     old_duplex;

        /* Misc fields */
        unsigned int            rx_chk_en:1;
        unsigned int            tsb_en:1;
        unsigned int            crc_fwd:1;
        u16                     rev;
        u32                     wolopts;
        unsigned int            wol_irq_disabled:1;

        /* MIB related fields */
        struct bcm_sysport_mib  mib;

        /* Ethtool */
        u32                     msg_enable;
};
#endif /* __BCM_SYSPORT_H */