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linux_dsm_epyc7002/drivers/net/ethernet/broadcom/bcmsysport.h
David S. Miller d7ee287827 Generic DIM 
From: Tal Gilboa and Yamin Fridman
 
 Implement net DIM over a generic DIM library, add RDMA DIM
 
 dim.h lib exposes an implementation of the DIM algorithm for
 dynamically-tuned interrupt moderation for networking interfaces.
 
 We want a similar functionality for other protocols, which might need to
 optimize interrupts differently. Main motivation here is DIM for NVMf
 storage protocol.
 
 Current DIM implementation prioritizes reducing interrupt overhead over
 latency. Also, in order to reduce DIM's own overhead, the algorithm might
 take some time to identify it needs to change profiles. While this is
 acceptable for networking, it might not work well on other scenarios.
 
 Here we propose a new structure to DIM. The idea is to allow a slightly
 modified functionality without the risk of breaking Net DIM behavior for
 netdev. We verified there are no degradations in current DIM behavior with
 the modified solution.
 
 Suggested solution:
 - Common logic is implemented in lib/dim/dim.c
 - Net DIM (existing) logic is implemented in lib/dim/net_dim.c, which uses
   the common logic in dim.c
 - Any new DIM logic will be implemented in "lib/dim/new_dim.c".
   This new implementation will expose modified versions of profiles,
   dim_step() and dim_decision().
 - DIM API is declared in include/linux/dim.h for all implementations.
 
 Pros for this solution are:
 - Zero impact on existing net_dim implementation and usage
 - Relatively more code reuse (compared to two separate solutions)
 - Increased extensibility
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Merge tag 'blk-dim-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mamameed says:

====================
Generic DIM

From: Tal Gilboa and Yamin Fridman

Implement net DIM over a generic DIM library, add RDMA DIM

dim.h lib exposes an implementation of the DIM algorithm for
dynamically-tuned interrupt moderation for networking interfaces.

We want a similar functionality for other protocols, which might need to
optimize interrupts differently. Main motivation here is DIM for NVMf
storage protocol.

Current DIM implementation prioritizes reducing interrupt overhead over
latency. Also, in order to reduce DIM's own overhead, the algorithm might
take some time to identify it needs to change profiles. While this is
acceptable for networking, it might not work well on other scenarios.

Here we propose a new structure to DIM. The idea is to allow a slightly
modified functionality without the risk of breaking Net DIM behavior for
netdev. We verified there are no degradations in current DIM behavior with
the modified solution.

Suggested solution:
- Common logic is implemented in lib/dim/dim.c
- Net DIM (existing) logic is implemented in lib/dim/net_dim.c, which uses
  the common logic in dim.c
- Any new DIM logic will be implemented in "lib/dim/new_dim.c".
  This new implementation will expose modified versions of profiles,
  dim_step() and dim_decision().
- DIM API is declared in include/linux/dim.h for all implementations.

Pros for this solution are:
- Zero impact on existing net_dim implementation and usage
- Relatively more code reuse (compared to two separate solutions)
- Increased extensibility
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-27 12:42:51 -07:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Broadcom BCM7xxx System Port Ethernet MAC driver
*
* Copyright (C) 2014 Broadcom Corporation
*/
#ifndef __BCM_SYSPORT_H
#define __BCM_SYSPORT_H
#include <linux/bitmap.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/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) * 0x4 + RXCHK_BRCM_TAG0)
#define RXCHK_BRCM_TAG0_MASK 0x24
#define RXCHK_BRCM_TAG_MASK(i) ((i) * 0x4 + 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
#define RXCHK_BRCM_TAG_MAX 8
#define RXCHK_BRCM_TAG_CID_SHIFT 16
#define RXCHK_BRCM_TAG_CID_MASK 0xff
/* 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_ACPI_EN_LITE (1 << 24)
#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_SHIFT 6
#define GIB_FCS_STRIP (1 << GIB_FCS_STRIP_SHIFT)
#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
/* 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 2
/* 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;
u32 tx_realloc_tsb;
u32 tx_realloc_tsb_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 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 */
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 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;
u8 sopass[SOPASS_MAX];
unsigned int wol_irq_disabled:1;
/* MIB related fields */
struct bcm_sysport_mib mib;
/* Ethtool */
u32 msg_enable;
DECLARE_BITMAP(filters, RXCHK_BRCM_TAG_MAX);
u32 filters_loc[RXCHK_BRCM_TAG_MAX];
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;
struct bcm_sysport_tx_ring *ring_map[DSA_MAX_PORTS * 8];
};
#endif /* __BCM_SYSPORT_H */
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