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330 lines
11 KiB
C
330 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 The FreeBSD Foundation
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*
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* This driver was written by Gerald ND Aryeetey <gndaryee@uwaterloo.ca>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _IF_MGB_H_
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#define _IF_MGB_H_
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#define MGB_MICROCHIP_VENDOR_ID 0x1055
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#define MGB_LAN7430_DEVICE_ID 0x7430
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#define MGB_LAN7431_DEVICE_ID 0x7431
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#define MGB_TIMEOUT (500)
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/** Control/Status Registers **/
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#define MGB_BAR 0 /* PCI Base Address */
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/** Reset **/
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#define MGB_HW_CFG 0x10 /** H/W Configuration Register **/
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#define MGB_LITE_RESET 0x2
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/** MAC **/
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#define MGB_MAC_CR 0x0100 /** MAC Crontrol Register **/
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#define MGB_MAC_ADD_ENBL 0x1000 /* Automatic Duplex Detection */
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#define MGB_MAC_ASD_ENBL 0x0800 /* Automatic Speed Detection */
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#define MGB_MAC_ADDR_BASE_L 0x11C /** MAC address lower 4 bytes (read) register **/
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#define MGB_MAC_ADDR_BASE_H 0x118 /** MAC address upper 2 bytes (read) register **/
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#define MGB_MAC_TX 0x0104
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#define MGB_MAC_RX 0x0108
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#define MGB_MAC_ENBL (1 << 0)
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#define MGB_MAC_DSBL (1 << 1)
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/** MAC Statistics **/
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#define MGB_MAC_STAT_RX_FCS_ERR_CNT 0x1200
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#define MGB_MAC_STAT_RX_ALIGN_ERR_CNT 0x1204
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#define MGB_MAC_STAT_RX_FRAG_ERR_CNT 0x1208
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#define MGB_MAC_STAT_RX_JABBER_ERR_CNT 0x120C
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#define MGB_MAC_STAT_RX_UNDER_ERR_CNT 0x1210
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#define MGB_MAC_STAT_RX_OVER_ERR_CNT 0x1214
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#define MGB_MAC_STAT_RX_DROPPED_CNT 0x1218
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#define MGB_MAC_STAT_RX_BROADCAST_CNT1 0x1220
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#define MGB_MAC_STAT_RX_BROADCAST_CNT 0x122C
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#define MGB_MAC_STAT_RX_FRAME_CNT 0x1254
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#define MGB_MAC_STAT_RX_DROPPED_CNT 0x1218
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#define MGB_MAC_STAT_RX_BROADCAST_CNT1 0x1220
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#define MGB_MAC_STAT_RX_BROADCAST_CNT 0x122C
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#define MGB_MAC_STAT_RX_FRAME_CNT 0x1254
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/* etc. */
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/** Receive Filtering Engine **/
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#define MGB_RFE_CTL 0x508
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#define MGB_RFE_ALLOW_BROADCAST (1 << 10)
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#define MGB_RFE_ALLOW_MULTICAST (1 << 9)
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#define MGB_RFE_ALLOW_UNICAST (1 << 8)
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#define MGB_RFE_ALLOW_PERFECT_FILTER (1 << 1)
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/** PHY Reset (via power management control) **/
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#define MGB_PMT_CTL 0x14 /** Power Management Control Register **/
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#define MGB_PHY_RESET 0x10
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#define MGB_PHY_READY 0x80
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/** FIFO Controller **/
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#define MGB_FCT_TX_CTL 0xC4
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#define MGB_FCT_RX_CTL 0xAC
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#define MGB_FCT_ENBL(_channel) (1 << (28 + (_channel)))
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#define MGB_FCT_DSBL(_channel) (1 << (24 + (_channel)))
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#define MGB_FCT_RESET(_channel) (1 << (20 + (_channel)))
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/** DMA Controller **/
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#define MGB_DMAC_CMD 0xC0C
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#define MGB_DMAC_RESET (1 << 31)
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#define MGB_DMAC_TX_START 16
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#define MGB_DMAC_RX_START 0
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#define MGB_DMAC_CMD_VAL(s, o, ch) (1 << ((s) + (o) + (ch)))
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#define MGB_DMAC_CMD_RESET(_s, _ch) MGB_DMAC_CMD_VAL(_s, 8, _ch)
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#define MGB_DMAC_CMD_START(_s, _ch) MGB_DMAC_CMD_VAL(_s, 4, _ch)
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#define MGB_DMAC_CMD_STOP( _s, _ch) MGB_DMAC_CMD_VAL(_s, 0, _ch)
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#define MGB_DMAC_STATE(_start, _stop) \
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(((_start) ? 2 : 0) | ((_stop) ? 1 : 0))
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#define MGB_DMAC_STATE_INITIAL MGB_DMAC_STATE(0, 0)
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#define MGB_DMAC_STATE_STARTED MGB_DMAC_STATE(1, 0)
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#define MGB_DMAC_STATE_STOP_PENDING MGB_DMAC_STATE(1, 1)
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#define MGB_DMAC_STATE_STOPPED MGB_DMAC_STATE(0, 1)
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#define MGB_DMAC_CMD_STATE(sc, _s, _ch) \
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(MGB_DMAC_STATE( \
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CSR_READ_REG(sc, MGB_DMAC_CMD) & MGB_DMAC_CMD_START(_s, _ch), \
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CSR_READ_REG(sc, MGB_DMAC_CMD) & MGB_DMAC_CMD_STOP(_s, _ch)))
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#define MGB_DMAC_STATE_IS_INITIAL(sc, _s, _ch) \
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(MGB_DMAC_CMD_STATE(sc, _s, _ch) == MGB_DMAC_STATE_INITIAL)
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#define MGB_DMAC_INTR_STS 0xC10
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#define MGB_DMAC_INTR_ENBL_SET 0xC14
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#define MGB_DMAC_INTR_ENBL_CLR 0xC18
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#define MGB_DMAC_TX_INTR_ENBL(_ch) (1 << (_ch))
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#define MGB_DMAC_RX_INTR_ENBL(_ch) (1 << (16 + (_ch)))
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/** DMA Rings **/
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/**
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* Page size is 256 bytes
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*
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* Ring size, however, these could be tunable (for RX & TX)
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* to be a multiple of 4 (max is 65532)
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*
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**/
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/* In linux driver these numbers are 50 and 65 for tx and rx .... */
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#define MGB_DMA_RING_SIZE 16 /* in programming guide, this number is 100 */
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#define MGB_DMA_MAXSEGS 32
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#define MGB_DMA_REG(reg, _channel) ((reg) | ((_channel) << 6))
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#define MGB_DMA_RING_LIST_SIZE \
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(sizeof(struct mgb_ring_desc) * MGB_DMA_RING_SIZE)
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#define MGB_DMA_RING_INFO_SIZE \
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(sizeof(uint32_t) + MGB_DMA_RING_LIST_SIZE)
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#define MGB_DMA_TX_CONFIG0(_channel) MGB_DMA_REG(0x0D40, _channel)
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#define MGB_DMA_TX_CONFIG1(_channel) MGB_DMA_REG(0x0D44, _channel)
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#define MGB_DMA_TX_BASE_H(_channel) MGB_DMA_REG(0x0D48, _channel)
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#define MGB_DMA_TX_BASE_L(_channel) MGB_DMA_REG(0x0D4C, _channel)
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#define MGB_DMA_TX_HEAD_WB_H(_channel) MGB_DMA_REG(0x0D50, _channel) /* head Writeback */
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#define MGB_DMA_TX_HEAD_WB_L(_channel) MGB_DMA_REG(0x0D54, _channel)
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#define MGB_DMA_TX_HEAD(_channel) MGB_DMA_REG(0x0D58, _channel)
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#define MGB_DMA_TX_TAIL(_channel) MGB_DMA_REG(0x0D5C, _channel)
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#define MGB_DMA_RX_CONFIG0(_channel) MGB_DMA_REG(0x0C40, _channel)
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#define MGB_DMA_RX_CONFIG1(_channel) MGB_DMA_REG(0x0C44, _channel)
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#define MGB_DMA_RX_BASE_H(_channel) MGB_DMA_REG(0x0C48, _channel)
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#define MGB_DMA_RX_BASE_L(_channel) MGB_DMA_REG(0x0C4C, _channel)
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#define MGB_DMA_RX_HEAD_WB_H(_channel) MGB_DMA_REG(0x0C50, _channel) /* head Writeback */
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#define MGB_DMA_RX_HEAD_WB_L(_channel) MGB_DMA_REG(0x0C54, _channel)
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#define MGB_DMA_RX_HEAD(_channel) MGB_DMA_REG(0x0C58, _channel)
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#define MGB_DMA_RX_TAIL(_channel) MGB_DMA_REG(0x0C5C, _channel)
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#define MGB_DMA_RING_LEN_MASK 0xFFFF
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#define MGB_DMA_IOC_ENBL 0x10000000
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#define MGB_DMA_HEAD_WB_LS_ENBL 0x20000000
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#define MGB_DMA_HEAD_WB_ENBL (1 << 5)
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#define MGB_DMA_RING_PAD_MASK 0x03000000
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#define MGB_DMA_RING_PAD_0 0x00000000
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#define MGB_DMA_RING_PAD_2 0x02000000
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#define MGB_DESC_CTL_OWN (1 << 15)
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#define MGB_DESC_CTL_FCS (1 << 17)
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#define MGB_DESC_CTL_IOC (1 << 26)
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#define MGB_TX_DESC_CTL_LS (1 << 28)
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#define MGB_TX_DESC_CTL_FS (1 << 29)
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#define MGB_RX_DESC_CTL_LS (1 << 30)
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#define MGB_RX_DESC_CTL_FS (1 << 31)
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#define MGB_DESC_CTL_BUFLEN_MASK (0x0000FFFF)
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#define MGB_DESC_STS_BUFLEN_MASK (0x00003FFF)
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#define MGB_DESC_FRAME_LEN_MASK (0x3FFF0000)
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#define MGB_DESC_GET_FRAME_LEN(_desc) \
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(((_desc)->ctl & MGB_DESC_FRAME_LEN_MASK) >> 16)
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#define MGB_NEXT_RING_IDX(_idx) (((_idx) == MGB_DMA_RING_SIZE - 1) ? 0 : ((_idx) + 1))
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#define MGB_PREV_RING_IDX(_idx) (((_idx) == 0) ? (MGB_DMA_RING_SIZE - 1) : ((_idx) - 1))
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#define MGB_RING_SPACE(_sc) \
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((((_sc)->tx_ring_data.last_head - (_sc)->tx_ring_data.last_tail - 1) \
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+ MGB_DMA_RING_SIZE ) % MGB_DMA_RING_SIZE )
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/** PHY **/
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#define MGB_MII_ACCESS 0x120
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#define MGB_MII_DATA 0x124
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#define MGB_MII_PHY_ADDR_MASK 0x1F
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#define MGB_MII_PHY_ADDR_SHIFT 11
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#define MGB_MII_REG_ADDR_MASK 0x1F
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#define MGB_MII_REG_ADDR_SHIFT 6
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#define MGB_MII_READ 0x0
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#define MGB_MII_WRITE 0x2
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#define MGB_MII_BUSY 0x1
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/** Interrupt registers **/
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#define MGB_INTR_STS 0x780
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#define MGB_INTR_SET 0x784 /* This triggers a particular interrupt */
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#define MGB_INTR_ENBL_SET 0x788
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#define MGB_INTR_STS_ANY (0x1)
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#define MGB_INTR_STS_RX(_channel) (1 << (24 + (_channel)))
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#define MGB_INTR_STS_RX_ANY (0xF << 24)
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#define MGB_INTR_STS_TX(_channel) (1 << (16 + (_channel)))
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#define MGB_INTR_STS_TX_ANY (0xF << 16)
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#define MGB_INTR_STS_TEST (1 << 9)
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#define MGB_INTR_ENBL_CLR 0x78C
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#define MGB_INTR_VEC_ENBL_SET 0x794
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#define MGB_INTR_VEC_ENBL_CLR 0x798
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#define MGB_INTR_VEC_ENBL_AUTO_CLR 0x79C
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#define MGB_INTR_VEC_RX_MAP 0x7A0
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#define MGB_INTR_VEC_TX_MAP 0x7A4
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#define MGB_INTR_VEC_OTHER_MAP 0x7A8
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#define MGB_INTR_VEC_MAP(_vsts, _ch) ((_vsts) << ((_ch) << 2))
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#define MGB_INTR_VEC_STS(_v) (1 << (_v))
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#define MGB_INTR_RX_VEC_STS(_qid) MGB_INTR_VEC_STS((_qid) + 1)
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#define MGB_STS_OK ( 0 )
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#define MGB_STS_TIMEOUT (-1 )
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#define CSR_READ_BYTE(sc, reg) \
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bus_read_1((sc)->regs, reg)
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#define CSR_WRITE_BYTE(sc, reg, val) \
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bus_write_1((sc)->regs, reg, val)
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#define CSR_UPDATE_BYTE(sc, reg, val) \
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CSR_WRITE_BYTE(sc, reg, CSR_READ_BYTE(sc, reg) | (val))
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#define CSR_READ_REG(sc, reg) \
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bus_read_4((sc)->regs, reg)
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#define CSR_WRITE_REG(sc, reg, val) \
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bus_write_4((sc)->regs, reg, val)
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#define CSR_CLEAR_REG(sc, reg, bits) \
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CSR_WRITE_REG(sc, reg, CSR_READ_REG(sc, reg) & ~(bits))
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#define CSR_UPDATE_REG(sc, reg, val) \
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CSR_WRITE_REG(sc, reg, CSR_READ_REG(sc, reg) | (val))
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#define CSR_READ_2_BYTES(sc, reg) \
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bus_read_2((sc)->regs, reg)
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#define CSR_READ_REG_BYTES(sc, reg, dest, cnt) \
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bus_read_region_1((sc)->regs, reg, dest, cnt)
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#define CSR_TRANSLATE_ADDR_LOW32(addr) ((uint64_t) (addr) & 0xFFFFFFFF)
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#define CSR_TRANSLATE_ADDR_HIGH32(addr) ((uint64_t) (addr) >> 32)
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struct mgb_irq {
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struct resource *res;
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void *handler;
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};
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enum mgb_dmac_cmd { DMAC_RESET, DMAC_START, DMAC_STOP };
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enum mgb_fct_cmd { FCT_RESET, FCT_ENABLE, FCT_DISABLE };
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struct mgb_ring_desc_addr {
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uint32_t low;
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uint32_t high;
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} __packed;
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/* TODO: With descriptor bit information
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* this could be done without masks etc.
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* (using bitwise structs like vmx,
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* would have to separate rx/tx ring desc
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* definitions)
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*/
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struct mgb_ring_desc {
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uint32_t ctl; /* data0 */
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struct mgb_ring_desc_addr addr; /* data(1|2) */
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uint32_t sts; /* data3 */
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} __packed;
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#if 0
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struct mgb_ring_info {
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uint32_t head_wb;
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struct mgb_ring_desc *ring;
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}
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#endif
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#define MGB_HEAD_WB_PTR(_ring_info_ptr) \
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((uint32_t *)(_ring_info_ptr))
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#define MGB_RING_PTR(_ring_info_ptr) \
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((struct mgb_ring_desc *)(MGB_HEAD_WB_PTR(_ring_info_ptr) + 1))
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struct mgb_ring_data {
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uint32_t *head_wb;
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struct mgb_ring_desc *ring;
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bus_addr_t head_wb_bus_addr;
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bus_addr_t ring_bus_addr;
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uint32_t last_head;
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uint32_t last_tail;
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};
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struct mgb_softc {
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if_ctx_t ctx;
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device_t dev;
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struct resource *regs;
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struct resource *pba;
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struct if_irq admin_irq;
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struct if_irq rx_irq;
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bool isr_test_flag;
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device_t miibus;
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int link_state;
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int baudrate;
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int if_flags;
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int ethaddr;
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int flags;
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struct mtx mtx;
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struct callout watchdog;
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int timer;
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bus_dma_tag_t dma_parent_tag;
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struct mgb_ring_data rx_ring_data;
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struct mgb_ring_data tx_ring_data;
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};
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#endif /* _IF_MGB_H_ */
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