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freebsd-skq/sys/arm/allwinner/if_awgreg.h
jmcneill fb6c2d6ae3 Allwinner Gigabit EMAC performance improvements. 
- Support DEVICE_POLLING
 - Increase TX descriptors to 1024
 - Add support for passing a chain of mbufs to if_input, reducing the
   number of calls to mtx_unlock/mtx_lock under load.
 - Remove duplicate byteswap when setting TX_INT_CTL in TX descriptor.
 - Set undocumented "TX_NEXT_FRAME" bit in TX control 1 register.
   According to the A83T BSP, setting this bit allows the DMA engine to
   operate on a packet while receiving another.

Tested on A83T (1000Mbps PHY) and H3 (100Mbps PHY).

Reviewed by:		manu
Differential Revision:	https://reviews.freebsd.org/D7031
2016-07-13 20:46:54 +00:00

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/*-
* Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Allwinner Gigabit Ethernet
*/
#ifndef __IF_AWGREG_H__
#define __IF_AWGREG_H__
#define EMAC_BASIC_CTL_0 0x00
#define BASIC_CTL_SPEED (0x3 << 2)
#define BASIC_CTL_SPEED_SHIFT 2
#define BASIC_CTL_SPEED_1000 0
#define BASIC_CTL_SPEED_10 2
#define BASIC_CTL_SPEED_100 3
#define BASIC_CTL_LOOPBACK (1 << 1)
#define BASIC_CTL_DUPLEX (1 << 0)
#define EMAC_BASIC_CTL_1 0x04
#define BASIC_CTL_BURST_LEN (0x3f << 24)
#define BASIC_CTL_BURST_LEN_SHIFT 24
#define BASIC_CTL_RX_TX_PRI (1 << 1)
#define BASIC_CTL_SOFT_RST (1 << 0)
#define EMAC_INT_STA 0x08
#define RX_BUF_UA_INT (1 << 10)
#define RX_INT (1 << 8)
#define TX_UNDERFLOW_INT (1 << 4)
#define TX_BUF_UA_INT (1 << 2)
#define TX_DMA_STOPPED_INT (1 << 1)
#define TX_INT (1 << 0)
#define EMAC_INT_EN 0x0c
#define RX_BUF_UA_INT_EN (1 << 10)
#define RX_INT_EN (1 << 8)
#define TX_UNDERFLOW_INT_EN (1 << 4)
#define TX_BUF_UA_INT_EN (1 << 2)
#define TX_DMA_STOPPED_INT_EN (1 << 1)
#define TX_INT_EN (1 << 0)
#define EMAC_TX_CTL_0 0x10
#define TX_EN (1 << 31)
#define EMAC_TX_CTL_1 0x14
#define TX_DMA_START (1 << 31)
#define TX_DMA_EN (1 << 30)
#define TX_NEXT_FRAME (1 << 2)
#define TX_MD (1 << 1)
#define FLUSH_TX_FIFO (1 << 0)
#define EMAC_TX_FLOW_CTL 0x1c
#define PAUSE_TIME (0xffff << 4)
#define PAUSE_TIME_SHIFT 4
#define TX_FLOW_CTL_EN (1 << 0)
#define EMAC_TX_DMA_LIST 0x20
#define EMAC_RX_CTL_0 0x24
#define RX_EN (1 << 31)
#define JUMBO_FRM_EN (1 << 29)
#define STRIP_FCS (1 << 28)
#define CHECK_CRC (1 << 27)
#define RX_FLOW_CTL_EN (1 << 16)
#define EMAC_RX_CTL_1 0x28
#define RX_DMA_START (1 << 31)
#define RX_DMA_EN (1 << 30)
#define RX_MD (1 << 1)
#define EMAC_RX_DMA_LIST 0x34
#define EMAC_RX_FRM_FLT 0x38
#define DIS_ADDR_FILTER (1 << 31)
#define DIS_BROADCAST (1 << 17)
#define RX_ALL_MULTICAST (1 << 16)
#define CTL_FRM_FILTER (0x3 << 12)
#define CTL_FRM_FILTER_SHIFT 12
#define HASH_MULTICAST (1 << 9)
#define HASH_UNICAST (1 << 8)
#define SA_FILTER_EN (1 << 6)
#define SA_INV_FILTER (1 << 5)
#define DA_INV_FILTER (1 << 4)
#define FLT_MD (1 << 1)
#define RX_ALL (1 << 0)
#define EMAC_RX_HASH_0 0x40
#define EMAC_RX_HASH_1 0x44
#define EMAC_MII_CMD 0x48
#define MDC_DIV_RATIO_M (0x7 << 20)
#define MDC_DIV_RATIO_M_16 0
#define MDC_DIV_RATIO_M_32 1
#define MDC_DIV_RATIO_M_64 2
#define MDC_DIV_RATIO_M_128 3
#define MDC_DIV_RATIO_M_SHIFT 20
#define PHY_ADDR (0x1f << 12)
#define PHY_ADDR_SHIFT 12
#define PHY_REG_ADDR (0x1f << 4)
#define PHY_REG_ADDR_SHIFT 4
#define MII_WR (1 << 1)
#define MII_BUSY (1 << 0)
#define EMAC_MII_DATA 0x4c
#define EMAC_ADDR_HIGH(n) (0x50 + (n) * 8)
#define EMAC_ADDR_LOW(n) (0x54 + (n) * 8)
#define EMAC_TX_DMA_STA 0x80
#define EMAC_TX_DMA_CUR_DESC 0x84
#define EMAC_TX_DMA_CUR_BUF 0x88
#define EMAC_RX_DMA_STA 0xc0
#define EMAC_RX_DMA_CUR_DESC 0xc4
#define EMAC_RX_DMA_CUR_BUF 0xc8
#define EMAC_RGMII_STA 0xd0
struct emac_desc {
uint32_t status;
/* Transmit */
#define TX_DESC_CTL (1 << 31)
#define TX_HEADER_ERR (1 << 16)
#define TX_LENGTH_ERR (1 << 14)
#define TX_PAYLOAD_ERR (1 << 12)
#define TX_CRS_ERR (1 << 10)
#define TX_COL_ERR_0 (1 << 9)
#define TX_COL_ERR_1 (1 << 8)
#define TX_COL_CNT (0xf << 3)
#define TX_COL_CNT_SHIFT 3
#define TX_DEFER_ERR (1 << 2)
#define TX_UNDERFLOW_ERR (1 << 1)
#define TX_DEFER (1 << 0)
/* Receive */
#define RX_DESC_CTL (1 << 31)
#define RX_DAF_FAIL (1 << 30)
#define RX_FRM_LEN (0x3fff << 16)
#define RX_FRM_LEN_SHIFT 16
#define RX_NO_ENOUGH_BUF_ERR (1 << 14)
#define RX_SAF_FAIL (1 << 13)
#define RX_OVERFLOW_ERR (1 << 11)
#define RX_FIR_DESC (1 << 9)
#define RX_LAST_DESC (1 << 8)
#define RX_HEADER_ERR (1 << 7)
#define RX_COL_ERR (1 << 6)
#define RX_FRM_TYPE (1 << 5)
#define RX_LENGTH_ERR (1 << 4)
#define RX_PHY_ERR (1 << 3)
#define RX_CRC_ERR (1 << 1)
#define RX_PAYLOAD_ERR (1 << 0)
uint32_t size;
/* Transmit */
#define TX_INT_CTL (1 << 31)
#define TX_LAST_DESC (1 << 30)
#define TX_FIR_DESC (1 << 29)
#define TX_CHECKSUM_CTL (0x3 << 27)
#define TX_CHECKSUM_CTL_IP 1
#define TX_CHECKSUM_CTL_NO_PSE 2
#define TX_CHECKSUM_CTL_FULL 3
#define TX_CHECKSUM_CTL_SHIFT 27
#define TX_CRC_CTL (1 << 26)
#define TX_BUF_SIZE (0xfff << 0)
#define TX_BUF_SIZE_SHIFT 0
/* Receive */
#define RX_INT_CTL (1 << 31)
#define RX_BUF_SIZE (0xfff << 0)
#define RX_BUF_SIZE_SHIFT 0
uint32_t addr;
uint32_t next;
} __packed;
#endif /* !__IF_AWGREG_H__ */
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