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a8cdfbdf88
linux/drivers/net/ethernet/broadcom/bcmsysport.h
Florian Fainelli a8cdfbdf88 net: systemport: Fix coalescing settings handling 
There were a number of issues with setting the RX coalescing parameters:

- we would not be preserving values that would have been configured
  across close/open calls, instead we would always reset to no timeout
  and 1 interrupt per packet, this would also prevent DIM from setting its
  default usec/pkts values

- when adaptive RX would be turned on, we woud not be fetching the
  default parameters, we would stay with no timeout/1 packet per
  interrupt until the estimator kicks in and changes that

- finally disabling adaptive RX coalescing while providing parameters
  would not be honored, and we would stay with whatever DIM had
  previously determined instead of the user requested parameters

Fixes: b6e0e87542 ("net: systemport: Implement adaptive interrupt coalescing")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Tal Gilboa <talgi@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30 10:03:36 -04:00

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/*
* 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>
#include <linux/net_dim.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)
/* SYSTEMPORT Lite groups the TX queues interrupts on instance 0 */
#define INTRL2_0_TDMA_MBDONE_SHIFT 12
#define INTRL2_0_TDMA_MBDONE_MASK (0xffff << INTRL2_0_TDMA_MBDONE_SHIFT)
/* 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)
/* SYSTEMPORT Lite uses two bits here */
#define RBUF_RSB_SWAP0 (1 << 22)
#define RBUF_RSB_SWAP1 (1 << 23)
#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)
/* These offsets are valid for SYSTEMPORT and SYSTEMPORT Lite */
#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
/* Only valid on SYSTEMPORT Lite */
#define SYS_PORT_GIB_OFFSET 0x1000
#define GIB_CONTROL 0x00
#define GIB_TX_EN (1 << 0)
#define GIB_RX_EN (1 << 1)
#define GIB_TX_FLUSH (1 << 2)
#define GIB_RX_FLUSH (1 << 3)
#define GIB_GTX_CLK_SEL_SHIFT 4
#define GIB_GTX_CLK_EXT_CLK (0 << GIB_GTX_CLK_SEL_SHIFT)
#define GIB_GTX_CLK_125MHZ (1 << GIB_GTX_CLK_SEL_SHIFT)
#define GIB_GTX_CLK_250MHZ (2 << GIB_GTX_CLK_SEL_SHIFT)
#define GIB_FCS_STRIP (1 << 6)
#define GIB_LCL_LOOP_EN (1 << 7)
#define GIB_LCL_LOOP_TXEN (1 << 8)
#define GIB_RMT_LOOP_EN (1 << 9)
#define GIB_RMT_LOOP_RXEN (1 << 10)
#define GIB_RX_PAUSE_EN (1 << 11)
#define GIB_PREAMBLE_LEN_SHIFT 12
#define GIB_PREAMBLE_LEN_MASK 0xf
#define GIB_IPG_LEN_SHIFT 16
#define GIB_IPG_LEN_MASK 0x3f
#define GIB_PAD_EXTENSION_SHIFT 22
#define GIB_PAD_EXTENSION_MASK 0x3f
#define GIB_MAC1 0x08
#define GIB_MAC0 0x0c
/* 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 0x7
#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 0
#define TSB_EN 1
/* Uses 2 bits on SYSTEMPORT Lite and shifts everything by 1 bit, we
* keep the SYSTEMPORT layout here and adjust with tdma_control_bit()
*/
#define TSB_SWAP0 2
#define TSB_SWAP1 3
#define ACB_ALGO 3
#define BUF_DATA_OFFSET_SHIFT 4
#define BUF_DATA_OFFSET_MASK 0x3ff
#define VLAN_EN 14
#define SW_BRCM_TAG 15
#define WNC_KPT_SIZE_UPDATE 16
#define SYNC_PKT_SIZE 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 SP_NUM_HW_RX_DESC_WORDS 1024
#define SP_LT_NUM_HW_RX_DESC_WORDS 256
/* Internal linked-list RAM size */
#define SP_NUM_TX_DESC 1536
#define SP_LT_NUM_TX_DESC 256
#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_NETDEV64,
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_NETDEV64(m) { \
.stat_string = __stringify(m), \
.stat_sizeof = sizeof(((struct bcm_sysport_stats64 *)0)->m), \
.stat_offset = offsetof(struct bcm_sysport_stats64, m), \
.type = BCM_SYSPORT_STAT_NETDEV64, \
}
#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, \
}
/* TX bytes and packets */
#define NUM_SYSPORT_TXQ_STAT 2
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;
};
struct bcm_sysport_stats64 {
/* 64bit stats on 32bit/64bit Machine */
u64 rx_packets;
u64 rx_bytes;
u64 tx_packets;
u64 tx_bytes;
};
/* 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);
};
enum bcm_sysport_type {
SYSTEMPORT = 0,
SYSTEMPORT_LITE,
};
struct bcm_sysport_hw_params {
bool is_lite;
unsigned int num_rx_desc_words;
};
struct bcm_sysport_net_dim {
u16 use_dim;
u16 event_ctr;
unsigned long packets;
unsigned long bytes;
struct net_dim dim;
};
/* 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 clean_index; /* Current clean 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 */
unsigned long packets; /* packets statistics */
unsigned long bytes; /* bytes statistics */
unsigned int switch_queue; /* switch port queue number */
unsigned int switch_port; /* switch port queue number */
bool inspect; /* inspect switch port and queue */
};
/* Driver private structure */
struct bcm_sysport_priv {
void __iomem *base;
u32 irq0_stat;
u32 irq0_mask;
u32 irq1_stat;
u32 irq1_mask;
bool is_lite;
unsigned int num_rx_desc_words;
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;
/* 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;
struct bcm_sysport_net_dim dim;
u32 rx_max_coalesced_frames;
u32 rx_coalesce_usecs;
/* 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;
struct bcm_sysport_stats64 stats64;
/* For atomic update generic 64bit value on 32bit Machine */
struct u64_stats_sync syncp;
/* map information between switch port queues and local queues */
struct notifier_block dsa_notifier;
unsigned int per_port_num_tx_queues;
unsigned long queue_bitmap;
struct bcm_sysport_tx_ring *ring_map[DSA_MAX_PORTS * 8];
};
#endif /* __BCM_SYSPORT_H */
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