6540 lines
180 KiB
C
6540 lines
180 KiB
C
/*
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* Driver for Marvell PPv2 network controller for Armada 375 SoC.
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*
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* Copyright (C) 2014 Marvell
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*
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* Marcin Wojtas <mw@semihalf.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/platform_device.h>
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#include <linux/skbuff.h>
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#include <linux/inetdevice.h>
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#include <linux/mbus.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/cpumask.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/of_mdio.h>
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#include <linux/of_net.h>
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#include <linux/of_address.h>
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#include <linux/phy.h>
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#include <linux/clk.h>
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#include <linux/hrtimer.h>
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#include <linux/ktime.h>
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#include <uapi/linux/ppp_defs.h>
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#include <net/ip.h>
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#include <net/ipv6.h>
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/* RX Fifo Registers */
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#define MVPP2_RX_DATA_FIFO_SIZE_REG(port) (0x00 + 4 * (port))
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#define MVPP2_RX_ATTR_FIFO_SIZE_REG(port) (0x20 + 4 * (port))
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#define MVPP2_RX_MIN_PKT_SIZE_REG 0x60
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#define MVPP2_RX_FIFO_INIT_REG 0x64
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/* RX DMA Top Registers */
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#define MVPP2_RX_CTRL_REG(port) (0x140 + 4 * (port))
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#define MVPP2_RX_LOW_LATENCY_PKT_SIZE(s) (((s) & 0xfff) << 16)
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#define MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK BIT(31)
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#define MVPP2_POOL_BUF_SIZE_REG(pool) (0x180 + 4 * (pool))
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#define MVPP2_POOL_BUF_SIZE_OFFSET 5
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#define MVPP2_RXQ_CONFIG_REG(rxq) (0x800 + 4 * (rxq))
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#define MVPP2_SNOOP_PKT_SIZE_MASK 0x1ff
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#define MVPP2_SNOOP_BUF_HDR_MASK BIT(9)
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#define MVPP2_RXQ_POOL_SHORT_OFFS 20
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#define MVPP2_RXQ_POOL_SHORT_MASK 0x700000
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#define MVPP2_RXQ_POOL_LONG_OFFS 24
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#define MVPP2_RXQ_POOL_LONG_MASK 0x7000000
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#define MVPP2_RXQ_PACKET_OFFSET_OFFS 28
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#define MVPP2_RXQ_PACKET_OFFSET_MASK 0x70000000
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#define MVPP2_RXQ_DISABLE_MASK BIT(31)
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/* Parser Registers */
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#define MVPP2_PRS_INIT_LOOKUP_REG 0x1000
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#define MVPP2_PRS_PORT_LU_MAX 0xf
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#define MVPP2_PRS_PORT_LU_MASK(port) (0xff << ((port) * 4))
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#define MVPP2_PRS_PORT_LU_VAL(port, val) ((val) << ((port) * 4))
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#define MVPP2_PRS_INIT_OFFS_REG(port) (0x1004 + ((port) & 4))
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#define MVPP2_PRS_INIT_OFF_MASK(port) (0x3f << (((port) % 4) * 8))
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#define MVPP2_PRS_INIT_OFF_VAL(port, val) ((val) << (((port) % 4) * 8))
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#define MVPP2_PRS_MAX_LOOP_REG(port) (0x100c + ((port) & 4))
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#define MVPP2_PRS_MAX_LOOP_MASK(port) (0xff << (((port) % 4) * 8))
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#define MVPP2_PRS_MAX_LOOP_VAL(port, val) ((val) << (((port) % 4) * 8))
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#define MVPP2_PRS_TCAM_IDX_REG 0x1100
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#define MVPP2_PRS_TCAM_DATA_REG(idx) (0x1104 + (idx) * 4)
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#define MVPP2_PRS_TCAM_INV_MASK BIT(31)
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#define MVPP2_PRS_SRAM_IDX_REG 0x1200
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#define MVPP2_PRS_SRAM_DATA_REG(idx) (0x1204 + (idx) * 4)
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#define MVPP2_PRS_TCAM_CTRL_REG 0x1230
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#define MVPP2_PRS_TCAM_EN_MASK BIT(0)
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/* Classifier Registers */
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#define MVPP2_CLS_MODE_REG 0x1800
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#define MVPP2_CLS_MODE_ACTIVE_MASK BIT(0)
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#define MVPP2_CLS_PORT_WAY_REG 0x1810
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#define MVPP2_CLS_PORT_WAY_MASK(port) (1 << (port))
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#define MVPP2_CLS_LKP_INDEX_REG 0x1814
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#define MVPP2_CLS_LKP_INDEX_WAY_OFFS 6
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#define MVPP2_CLS_LKP_TBL_REG 0x1818
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#define MVPP2_CLS_LKP_TBL_RXQ_MASK 0xff
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#define MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK BIT(25)
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#define MVPP2_CLS_FLOW_INDEX_REG 0x1820
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#define MVPP2_CLS_FLOW_TBL0_REG 0x1824
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#define MVPP2_CLS_FLOW_TBL1_REG 0x1828
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#define MVPP2_CLS_FLOW_TBL2_REG 0x182c
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#define MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port) (0x1980 + ((port) * 4))
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#define MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS 3
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#define MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK 0x7
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#define MVPP2_CLS_SWFWD_P2HQ_REG(port) (0x19b0 + ((port) * 4))
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#define MVPP2_CLS_SWFWD_PCTRL_REG 0x19d0
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#define MVPP2_CLS_SWFWD_PCTRL_MASK(port) (1 << (port))
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/* Descriptor Manager Top Registers */
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#define MVPP2_RXQ_NUM_REG 0x2040
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#define MVPP2_RXQ_DESC_ADDR_REG 0x2044
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#define MVPP2_RXQ_DESC_SIZE_REG 0x2048
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#define MVPP2_RXQ_DESC_SIZE_MASK 0x3ff0
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#define MVPP2_RXQ_STATUS_UPDATE_REG(rxq) (0x3000 + 4 * (rxq))
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#define MVPP2_RXQ_NUM_PROCESSED_OFFSET 0
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#define MVPP2_RXQ_NUM_NEW_OFFSET 16
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#define MVPP2_RXQ_STATUS_REG(rxq) (0x3400 + 4 * (rxq))
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#define MVPP2_RXQ_OCCUPIED_MASK 0x3fff
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#define MVPP2_RXQ_NON_OCCUPIED_OFFSET 16
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#define MVPP2_RXQ_NON_OCCUPIED_MASK 0x3fff0000
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#define MVPP2_RXQ_THRESH_REG 0x204c
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#define MVPP2_OCCUPIED_THRESH_OFFSET 0
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#define MVPP2_OCCUPIED_THRESH_MASK 0x3fff
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#define MVPP2_RXQ_INDEX_REG 0x2050
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#define MVPP2_TXQ_NUM_REG 0x2080
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#define MVPP2_TXQ_DESC_ADDR_REG 0x2084
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#define MVPP2_TXQ_DESC_SIZE_REG 0x2088
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#define MVPP2_TXQ_DESC_SIZE_MASK 0x3ff0
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#define MVPP2_AGGR_TXQ_UPDATE_REG 0x2090
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#define MVPP2_TXQ_THRESH_REG 0x2094
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#define MVPP2_TRANSMITTED_THRESH_OFFSET 16
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#define MVPP2_TRANSMITTED_THRESH_MASK 0x3fff0000
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#define MVPP2_TXQ_INDEX_REG 0x2098
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#define MVPP2_TXQ_PREF_BUF_REG 0x209c
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#define MVPP2_PREF_BUF_PTR(desc) ((desc) & 0xfff)
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#define MVPP2_PREF_BUF_SIZE_4 (BIT(12) | BIT(13))
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#define MVPP2_PREF_BUF_SIZE_16 (BIT(12) | BIT(14))
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#define MVPP2_PREF_BUF_THRESH(val) ((val) << 17)
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#define MVPP2_TXQ_DRAIN_EN_MASK BIT(31)
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#define MVPP2_TXQ_PENDING_REG 0x20a0
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#define MVPP2_TXQ_PENDING_MASK 0x3fff
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#define MVPP2_TXQ_INT_STATUS_REG 0x20a4
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#define MVPP2_TXQ_SENT_REG(txq) (0x3c00 + 4 * (txq))
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#define MVPP2_TRANSMITTED_COUNT_OFFSET 16
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#define MVPP2_TRANSMITTED_COUNT_MASK 0x3fff0000
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#define MVPP2_TXQ_RSVD_REQ_REG 0x20b0
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#define MVPP2_TXQ_RSVD_REQ_Q_OFFSET 16
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#define MVPP2_TXQ_RSVD_RSLT_REG 0x20b4
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#define MVPP2_TXQ_RSVD_RSLT_MASK 0x3fff
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#define MVPP2_TXQ_RSVD_CLR_REG 0x20b8
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#define MVPP2_TXQ_RSVD_CLR_OFFSET 16
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#define MVPP2_AGGR_TXQ_DESC_ADDR_REG(cpu) (0x2100 + 4 * (cpu))
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#define MVPP2_AGGR_TXQ_DESC_SIZE_REG(cpu) (0x2140 + 4 * (cpu))
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#define MVPP2_AGGR_TXQ_DESC_SIZE_MASK 0x3ff0
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#define MVPP2_AGGR_TXQ_STATUS_REG(cpu) (0x2180 + 4 * (cpu))
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#define MVPP2_AGGR_TXQ_PENDING_MASK 0x3fff
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#define MVPP2_AGGR_TXQ_INDEX_REG(cpu) (0x21c0 + 4 * (cpu))
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/* MBUS bridge registers */
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#define MVPP2_WIN_BASE(w) (0x4000 + ((w) << 2))
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#define MVPP2_WIN_SIZE(w) (0x4020 + ((w) << 2))
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#define MVPP2_WIN_REMAP(w) (0x4040 + ((w) << 2))
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#define MVPP2_BASE_ADDR_ENABLE 0x4060
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/* Interrupt Cause and Mask registers */
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#define MVPP2_ISR_RX_THRESHOLD_REG(rxq) (0x5200 + 4 * (rxq))
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#define MVPP2_ISR_RXQ_GROUP_REG(rxq) (0x5400 + 4 * (rxq))
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#define MVPP2_ISR_ENABLE_REG(port) (0x5420 + 4 * (port))
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#define MVPP2_ISR_ENABLE_INTERRUPT(mask) ((mask) & 0xffff)
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#define MVPP2_ISR_DISABLE_INTERRUPT(mask) (((mask) << 16) & 0xffff0000)
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#define MVPP2_ISR_RX_TX_CAUSE_REG(port) (0x5480 + 4 * (port))
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#define MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff
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#define MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK 0xff0000
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#define MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK BIT(24)
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#define MVPP2_CAUSE_FCS_ERR_MASK BIT(25)
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#define MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK BIT(26)
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#define MVPP2_CAUSE_TX_EXCEPTION_SUM_MASK BIT(29)
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#define MVPP2_CAUSE_RX_EXCEPTION_SUM_MASK BIT(30)
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#define MVPP2_CAUSE_MISC_SUM_MASK BIT(31)
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#define MVPP2_ISR_RX_TX_MASK_REG(port) (0x54a0 + 4 * (port))
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#define MVPP2_ISR_PON_RX_TX_MASK_REG 0x54bc
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#define MVPP2_PON_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff
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#define MVPP2_PON_CAUSE_TXP_OCCUP_DESC_ALL_MASK 0x3fc00000
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#define MVPP2_PON_CAUSE_MISC_SUM_MASK BIT(31)
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#define MVPP2_ISR_MISC_CAUSE_REG 0x55b0
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/* Buffer Manager registers */
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#define MVPP2_BM_POOL_BASE_REG(pool) (0x6000 + ((pool) * 4))
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#define MVPP2_BM_POOL_BASE_ADDR_MASK 0xfffff80
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#define MVPP2_BM_POOL_SIZE_REG(pool) (0x6040 + ((pool) * 4))
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#define MVPP2_BM_POOL_SIZE_MASK 0xfff0
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#define MVPP2_BM_POOL_READ_PTR_REG(pool) (0x6080 + ((pool) * 4))
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#define MVPP2_BM_POOL_GET_READ_PTR_MASK 0xfff0
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#define MVPP2_BM_POOL_PTRS_NUM_REG(pool) (0x60c0 + ((pool) * 4))
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#define MVPP2_BM_POOL_PTRS_NUM_MASK 0xfff0
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#define MVPP2_BM_BPPI_READ_PTR_REG(pool) (0x6100 + ((pool) * 4))
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#define MVPP2_BM_BPPI_PTRS_NUM_REG(pool) (0x6140 + ((pool) * 4))
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#define MVPP2_BM_BPPI_PTR_NUM_MASK 0x7ff
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#define MVPP2_BM_BPPI_PREFETCH_FULL_MASK BIT(16)
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#define MVPP2_BM_POOL_CTRL_REG(pool) (0x6200 + ((pool) * 4))
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#define MVPP2_BM_START_MASK BIT(0)
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#define MVPP2_BM_STOP_MASK BIT(1)
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#define MVPP2_BM_STATE_MASK BIT(4)
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#define MVPP2_BM_LOW_THRESH_OFFS 8
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#define MVPP2_BM_LOW_THRESH_MASK 0x7f00
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#define MVPP2_BM_LOW_THRESH_VALUE(val) ((val) << \
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MVPP2_BM_LOW_THRESH_OFFS)
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#define MVPP2_BM_HIGH_THRESH_OFFS 16
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#define MVPP2_BM_HIGH_THRESH_MASK 0x7f0000
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#define MVPP2_BM_HIGH_THRESH_VALUE(val) ((val) << \
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MVPP2_BM_HIGH_THRESH_OFFS)
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#define MVPP2_BM_INTR_CAUSE_REG(pool) (0x6240 + ((pool) * 4))
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#define MVPP2_BM_RELEASED_DELAY_MASK BIT(0)
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#define MVPP2_BM_ALLOC_FAILED_MASK BIT(1)
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#define MVPP2_BM_BPPE_EMPTY_MASK BIT(2)
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#define MVPP2_BM_BPPE_FULL_MASK BIT(3)
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#define MVPP2_BM_AVAILABLE_BP_LOW_MASK BIT(4)
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#define MVPP2_BM_INTR_MASK_REG(pool) (0x6280 + ((pool) * 4))
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#define MVPP2_BM_PHY_ALLOC_REG(pool) (0x6400 + ((pool) * 4))
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#define MVPP2_BM_PHY_ALLOC_GRNTD_MASK BIT(0)
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#define MVPP2_BM_VIRT_ALLOC_REG 0x6440
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#define MVPP2_BM_PHY_RLS_REG(pool) (0x6480 + ((pool) * 4))
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#define MVPP2_BM_PHY_RLS_MC_BUFF_MASK BIT(0)
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#define MVPP2_BM_PHY_RLS_PRIO_EN_MASK BIT(1)
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#define MVPP2_BM_PHY_RLS_GRNTD_MASK BIT(2)
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#define MVPP2_BM_VIRT_RLS_REG 0x64c0
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#define MVPP2_BM_MC_RLS_REG 0x64c4
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#define MVPP2_BM_MC_ID_MASK 0xfff
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#define MVPP2_BM_FORCE_RELEASE_MASK BIT(12)
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/* TX Scheduler registers */
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#define MVPP2_TXP_SCHED_PORT_INDEX_REG 0x8000
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#define MVPP2_TXP_SCHED_Q_CMD_REG 0x8004
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#define MVPP2_TXP_SCHED_ENQ_MASK 0xff
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#define MVPP2_TXP_SCHED_DISQ_OFFSET 8
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#define MVPP2_TXP_SCHED_CMD_1_REG 0x8010
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#define MVPP2_TXP_SCHED_PERIOD_REG 0x8018
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#define MVPP2_TXP_SCHED_MTU_REG 0x801c
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#define MVPP2_TXP_MTU_MAX 0x7FFFF
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#define MVPP2_TXP_SCHED_REFILL_REG 0x8020
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#define MVPP2_TXP_REFILL_TOKENS_ALL_MASK 0x7ffff
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#define MVPP2_TXP_REFILL_PERIOD_ALL_MASK 0x3ff00000
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#define MVPP2_TXP_REFILL_PERIOD_MASK(v) ((v) << 20)
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#define MVPP2_TXP_SCHED_TOKEN_SIZE_REG 0x8024
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#define MVPP2_TXP_TOKEN_SIZE_MAX 0xffffffff
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#define MVPP2_TXQ_SCHED_REFILL_REG(q) (0x8040 + ((q) << 2))
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#define MVPP2_TXQ_REFILL_TOKENS_ALL_MASK 0x7ffff
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#define MVPP2_TXQ_REFILL_PERIOD_ALL_MASK 0x3ff00000
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#define MVPP2_TXQ_REFILL_PERIOD_MASK(v) ((v) << 20)
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#define MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(q) (0x8060 + ((q) << 2))
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#define MVPP2_TXQ_TOKEN_SIZE_MAX 0x7fffffff
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#define MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(q) (0x8080 + ((q) << 2))
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#define MVPP2_TXQ_TOKEN_CNTR_MAX 0xffffffff
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/* TX general registers */
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#define MVPP2_TX_SNOOP_REG 0x8800
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#define MVPP2_TX_PORT_FLUSH_REG 0x8810
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#define MVPP2_TX_PORT_FLUSH_MASK(port) (1 << (port))
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/* LMS registers */
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#define MVPP2_SRC_ADDR_MIDDLE 0x24
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#define MVPP2_SRC_ADDR_HIGH 0x28
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#define MVPP2_PHY_AN_CFG0_REG 0x34
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#define MVPP2_PHY_AN_STOP_SMI0_MASK BIT(7)
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#define MVPP2_MIB_COUNTERS_BASE(port) (0x1000 + ((port) >> 1) * \
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0x400 + (port) * 0x400)
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#define MVPP2_MIB_LATE_COLLISION 0x7c
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#define MVPP2_ISR_SUM_MASK_REG 0x220c
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#define MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG 0x305c
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#define MVPP2_EXT_GLOBAL_CTRL_DEFAULT 0x27
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/* Per-port registers */
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#define MVPP2_GMAC_CTRL_0_REG 0x0
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#define MVPP2_GMAC_PORT_EN_MASK BIT(0)
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#define MVPP2_GMAC_MAX_RX_SIZE_OFFS 2
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#define MVPP2_GMAC_MAX_RX_SIZE_MASK 0x7ffc
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#define MVPP2_GMAC_MIB_CNTR_EN_MASK BIT(15)
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#define MVPP2_GMAC_CTRL_1_REG 0x4
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#define MVPP2_GMAC_PERIODIC_XON_EN_MASK BIT(1)
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#define MVPP2_GMAC_GMII_LB_EN_MASK BIT(5)
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#define MVPP2_GMAC_PCS_LB_EN_BIT 6
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#define MVPP2_GMAC_PCS_LB_EN_MASK BIT(6)
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#define MVPP2_GMAC_SA_LOW_OFFS 7
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#define MVPP2_GMAC_CTRL_2_REG 0x8
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#define MVPP2_GMAC_INBAND_AN_MASK BIT(0)
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#define MVPP2_GMAC_PCS_ENABLE_MASK BIT(3)
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#define MVPP2_GMAC_PORT_RGMII_MASK BIT(4)
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#define MVPP2_GMAC_PORT_RESET_MASK BIT(6)
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#define MVPP2_GMAC_AUTONEG_CONFIG 0xc
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#define MVPP2_GMAC_FORCE_LINK_DOWN BIT(0)
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#define MVPP2_GMAC_FORCE_LINK_PASS BIT(1)
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#define MVPP2_GMAC_CONFIG_MII_SPEED BIT(5)
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#define MVPP2_GMAC_CONFIG_GMII_SPEED BIT(6)
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#define MVPP2_GMAC_AN_SPEED_EN BIT(7)
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#define MVPP2_GMAC_FC_ADV_EN BIT(9)
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#define MVPP2_GMAC_CONFIG_FULL_DUPLEX BIT(12)
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#define MVPP2_GMAC_AN_DUPLEX_EN BIT(13)
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#define MVPP2_GMAC_PORT_FIFO_CFG_1_REG 0x1c
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#define MVPP2_GMAC_TX_FIFO_MIN_TH_OFFS 6
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#define MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK 0x1fc0
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#define MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(v) (((v) << 6) & \
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MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK)
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#define MVPP2_CAUSE_TXQ_SENT_DESC_ALL_MASK 0xff
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/* Descriptor ring Macros */
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#define MVPP2_QUEUE_NEXT_DESC(q, index) \
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(((index) < (q)->last_desc) ? ((index) + 1) : 0)
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/* Various constants */
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/* Coalescing */
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#define MVPP2_TXDONE_COAL_PKTS_THRESH 15
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#define MVPP2_TXDONE_HRTIMER_PERIOD_NS 1000000UL
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#define MVPP2_RX_COAL_PKTS 32
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#define MVPP2_RX_COAL_USEC 100
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/* The two bytes Marvell header. Either contains a special value used
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* by Marvell switches when a specific hardware mode is enabled (not
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* supported by this driver) or is filled automatically by zeroes on
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* the RX side. Those two bytes being at the front of the Ethernet
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* header, they allow to have the IP header aligned on a 4 bytes
|
|
* boundary automatically: the hardware skips those two bytes on its
|
|
* own.
|
|
*/
|
|
#define MVPP2_MH_SIZE 2
|
|
#define MVPP2_ETH_TYPE_LEN 2
|
|
#define MVPP2_PPPOE_HDR_SIZE 8
|
|
#define MVPP2_VLAN_TAG_LEN 4
|
|
|
|
/* Lbtd 802.3 type */
|
|
#define MVPP2_IP_LBDT_TYPE 0xfffa
|
|
|
|
#define MVPP2_CPU_D_CACHE_LINE_SIZE 32
|
|
#define MVPP2_TX_CSUM_MAX_SIZE 9800
|
|
|
|
/* Timeout constants */
|
|
#define MVPP2_TX_DISABLE_TIMEOUT_MSEC 1000
|
|
#define MVPP2_TX_PENDING_TIMEOUT_MSEC 1000
|
|
|
|
#define MVPP2_TX_MTU_MAX 0x7ffff
|
|
|
|
/* Maximum number of T-CONTs of PON port */
|
|
#define MVPP2_MAX_TCONT 16
|
|
|
|
/* Maximum number of supported ports */
|
|
#define MVPP2_MAX_PORTS 4
|
|
|
|
/* Maximum number of TXQs used by single port */
|
|
#define MVPP2_MAX_TXQ 8
|
|
|
|
/* Maximum number of RXQs used by single port */
|
|
#define MVPP2_MAX_RXQ 8
|
|
|
|
/* Dfault number of RXQs in use */
|
|
#define MVPP2_DEFAULT_RXQ 4
|
|
|
|
/* Total number of RXQs available to all ports */
|
|
#define MVPP2_RXQ_TOTAL_NUM (MVPP2_MAX_PORTS * MVPP2_MAX_RXQ)
|
|
|
|
/* Max number of Rx descriptors */
|
|
#define MVPP2_MAX_RXD 128
|
|
|
|
/* Max number of Tx descriptors */
|
|
#define MVPP2_MAX_TXD 1024
|
|
|
|
/* Amount of Tx descriptors that can be reserved at once by CPU */
|
|
#define MVPP2_CPU_DESC_CHUNK 64
|
|
|
|
/* Max number of Tx descriptors in each aggregated queue */
|
|
#define MVPP2_AGGR_TXQ_SIZE 256
|
|
|
|
/* Descriptor aligned size */
|
|
#define MVPP2_DESC_ALIGNED_SIZE 32
|
|
|
|
/* Descriptor alignment mask */
|
|
#define MVPP2_TX_DESC_ALIGN (MVPP2_DESC_ALIGNED_SIZE - 1)
|
|
|
|
/* RX FIFO constants */
|
|
#define MVPP2_RX_FIFO_PORT_DATA_SIZE 0x2000
|
|
#define MVPP2_RX_FIFO_PORT_ATTR_SIZE 0x80
|
|
#define MVPP2_RX_FIFO_PORT_MIN_PKT 0x80
|
|
|
|
/* RX buffer constants */
|
|
#define MVPP2_SKB_SHINFO_SIZE \
|
|
SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
|
|
|
|
#define MVPP2_RX_PKT_SIZE(mtu) \
|
|
ALIGN((mtu) + MVPP2_MH_SIZE + MVPP2_VLAN_TAG_LEN + \
|
|
ETH_HLEN + ETH_FCS_LEN, MVPP2_CPU_D_CACHE_LINE_SIZE)
|
|
|
|
#define MVPP2_RX_BUF_SIZE(pkt_size) ((pkt_size) + NET_SKB_PAD)
|
|
#define MVPP2_RX_TOTAL_SIZE(buf_size) ((buf_size) + MVPP2_SKB_SHINFO_SIZE)
|
|
#define MVPP2_RX_MAX_PKT_SIZE(total_size) \
|
|
((total_size) - NET_SKB_PAD - MVPP2_SKB_SHINFO_SIZE)
|
|
|
|
#define MVPP2_BIT_TO_BYTE(bit) ((bit) / 8)
|
|
|
|
/* IPv6 max L3 address size */
|
|
#define MVPP2_MAX_L3_ADDR_SIZE 16
|
|
|
|
/* Port flags */
|
|
#define MVPP2_F_LOOPBACK BIT(0)
|
|
|
|
/* Marvell tag types */
|
|
enum mvpp2_tag_type {
|
|
MVPP2_TAG_TYPE_NONE = 0,
|
|
MVPP2_TAG_TYPE_MH = 1,
|
|
MVPP2_TAG_TYPE_DSA = 2,
|
|
MVPP2_TAG_TYPE_EDSA = 3,
|
|
MVPP2_TAG_TYPE_VLAN = 4,
|
|
MVPP2_TAG_TYPE_LAST = 5
|
|
};
|
|
|
|
/* Parser constants */
|
|
#define MVPP2_PRS_TCAM_SRAM_SIZE 256
|
|
#define MVPP2_PRS_TCAM_WORDS 6
|
|
#define MVPP2_PRS_SRAM_WORDS 4
|
|
#define MVPP2_PRS_FLOW_ID_SIZE 64
|
|
#define MVPP2_PRS_FLOW_ID_MASK 0x3f
|
|
#define MVPP2_PRS_TCAM_ENTRY_INVALID 1
|
|
#define MVPP2_PRS_TCAM_DSA_TAGGED_BIT BIT(5)
|
|
#define MVPP2_PRS_IPV4_HEAD 0x40
|
|
#define MVPP2_PRS_IPV4_HEAD_MASK 0xf0
|
|
#define MVPP2_PRS_IPV4_MC 0xe0
|
|
#define MVPP2_PRS_IPV4_MC_MASK 0xf0
|
|
#define MVPP2_PRS_IPV4_BC_MASK 0xff
|
|
#define MVPP2_PRS_IPV4_IHL 0x5
|
|
#define MVPP2_PRS_IPV4_IHL_MASK 0xf
|
|
#define MVPP2_PRS_IPV6_MC 0xff
|
|
#define MVPP2_PRS_IPV6_MC_MASK 0xff
|
|
#define MVPP2_PRS_IPV6_HOP_MASK 0xff
|
|
#define MVPP2_PRS_TCAM_PROTO_MASK 0xff
|
|
#define MVPP2_PRS_TCAM_PROTO_MASK_L 0x3f
|
|
#define MVPP2_PRS_DBL_VLANS_MAX 100
|
|
|
|
/* Tcam structure:
|
|
* - lookup ID - 4 bits
|
|
* - port ID - 1 byte
|
|
* - additional information - 1 byte
|
|
* - header data - 8 bytes
|
|
* The fields are represented by MVPP2_PRS_TCAM_DATA_REG(5)->(0).
|
|
*/
|
|
#define MVPP2_PRS_AI_BITS 8
|
|
#define MVPP2_PRS_PORT_MASK 0xff
|
|
#define MVPP2_PRS_LU_MASK 0xf
|
|
#define MVPP2_PRS_TCAM_DATA_BYTE(offs) \
|
|
(((offs) - ((offs) % 2)) * 2 + ((offs) % 2))
|
|
#define MVPP2_PRS_TCAM_DATA_BYTE_EN(offs) \
|
|
(((offs) * 2) - ((offs) % 2) + 2)
|
|
#define MVPP2_PRS_TCAM_AI_BYTE 16
|
|
#define MVPP2_PRS_TCAM_PORT_BYTE 17
|
|
#define MVPP2_PRS_TCAM_LU_BYTE 20
|
|
#define MVPP2_PRS_TCAM_EN_OFFS(offs) ((offs) + 2)
|
|
#define MVPP2_PRS_TCAM_INV_WORD 5
|
|
/* Tcam entries ID */
|
|
#define MVPP2_PE_DROP_ALL 0
|
|
#define MVPP2_PE_FIRST_FREE_TID 1
|
|
#define MVPP2_PE_LAST_FREE_TID (MVPP2_PRS_TCAM_SRAM_SIZE - 31)
|
|
#define MVPP2_PE_IP6_EXT_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 30)
|
|
#define MVPP2_PE_MAC_MC_IP6 (MVPP2_PRS_TCAM_SRAM_SIZE - 29)
|
|
#define MVPP2_PE_IP6_ADDR_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 28)
|
|
#define MVPP2_PE_IP4_ADDR_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 27)
|
|
#define MVPP2_PE_LAST_DEFAULT_FLOW (MVPP2_PRS_TCAM_SRAM_SIZE - 26)
|
|
#define MVPP2_PE_FIRST_DEFAULT_FLOW (MVPP2_PRS_TCAM_SRAM_SIZE - 19)
|
|
#define MVPP2_PE_EDSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 18)
|
|
#define MVPP2_PE_EDSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 17)
|
|
#define MVPP2_PE_DSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 16)
|
|
#define MVPP2_PE_DSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 15)
|
|
#define MVPP2_PE_ETYPE_EDSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 14)
|
|
#define MVPP2_PE_ETYPE_EDSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 13)
|
|
#define MVPP2_PE_ETYPE_DSA_TAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 12)
|
|
#define MVPP2_PE_ETYPE_DSA_UNTAGGED (MVPP2_PRS_TCAM_SRAM_SIZE - 11)
|
|
#define MVPP2_PE_MH_DEFAULT (MVPP2_PRS_TCAM_SRAM_SIZE - 10)
|
|
#define MVPP2_PE_DSA_DEFAULT (MVPP2_PRS_TCAM_SRAM_SIZE - 9)
|
|
#define MVPP2_PE_IP6_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 8)
|
|
#define MVPP2_PE_IP4_PROTO_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 7)
|
|
#define MVPP2_PE_ETH_TYPE_UN (MVPP2_PRS_TCAM_SRAM_SIZE - 6)
|
|
#define MVPP2_PE_VLAN_DBL (MVPP2_PRS_TCAM_SRAM_SIZE - 5)
|
|
#define MVPP2_PE_VLAN_NONE (MVPP2_PRS_TCAM_SRAM_SIZE - 4)
|
|
#define MVPP2_PE_MAC_MC_ALL (MVPP2_PRS_TCAM_SRAM_SIZE - 3)
|
|
#define MVPP2_PE_MAC_PROMISCUOUS (MVPP2_PRS_TCAM_SRAM_SIZE - 2)
|
|
#define MVPP2_PE_MAC_NON_PROMISCUOUS (MVPP2_PRS_TCAM_SRAM_SIZE - 1)
|
|
|
|
/* Sram structure
|
|
* The fields are represented by MVPP2_PRS_TCAM_DATA_REG(3)->(0).
|
|
*/
|
|
#define MVPP2_PRS_SRAM_RI_OFFS 0
|
|
#define MVPP2_PRS_SRAM_RI_WORD 0
|
|
#define MVPP2_PRS_SRAM_RI_CTRL_OFFS 32
|
|
#define MVPP2_PRS_SRAM_RI_CTRL_WORD 1
|
|
#define MVPP2_PRS_SRAM_RI_CTRL_BITS 32
|
|
#define MVPP2_PRS_SRAM_SHIFT_OFFS 64
|
|
#define MVPP2_PRS_SRAM_SHIFT_SIGN_BIT 72
|
|
#define MVPP2_PRS_SRAM_UDF_OFFS 73
|
|
#define MVPP2_PRS_SRAM_UDF_BITS 8
|
|
#define MVPP2_PRS_SRAM_UDF_MASK 0xff
|
|
#define MVPP2_PRS_SRAM_UDF_SIGN_BIT 81
|
|
#define MVPP2_PRS_SRAM_UDF_TYPE_OFFS 82
|
|
#define MVPP2_PRS_SRAM_UDF_TYPE_MASK 0x7
|
|
#define MVPP2_PRS_SRAM_UDF_TYPE_L3 1
|
|
#define MVPP2_PRS_SRAM_UDF_TYPE_L4 4
|
|
#define MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS 85
|
|
#define MVPP2_PRS_SRAM_OP_SEL_SHIFT_MASK 0x3
|
|
#define MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD 1
|
|
#define MVPP2_PRS_SRAM_OP_SEL_SHIFT_IP4_ADD 2
|
|
#define MVPP2_PRS_SRAM_OP_SEL_SHIFT_IP6_ADD 3
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS 87
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_BITS 2
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_MASK 0x3
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_ADD 0
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_IP4_ADD 2
|
|
#define MVPP2_PRS_SRAM_OP_SEL_UDF_IP6_ADD 3
|
|
#define MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS 89
|
|
#define MVPP2_PRS_SRAM_AI_OFFS 90
|
|
#define MVPP2_PRS_SRAM_AI_CTRL_OFFS 98
|
|
#define MVPP2_PRS_SRAM_AI_CTRL_BITS 8
|
|
#define MVPP2_PRS_SRAM_AI_MASK 0xff
|
|
#define MVPP2_PRS_SRAM_NEXT_LU_OFFS 106
|
|
#define MVPP2_PRS_SRAM_NEXT_LU_MASK 0xf
|
|
#define MVPP2_PRS_SRAM_LU_DONE_BIT 110
|
|
#define MVPP2_PRS_SRAM_LU_GEN_BIT 111
|
|
|
|
/* Sram result info bits assignment */
|
|
#define MVPP2_PRS_RI_MAC_ME_MASK 0x1
|
|
#define MVPP2_PRS_RI_DSA_MASK 0x2
|
|
#define MVPP2_PRS_RI_VLAN_MASK 0xc
|
|
#define MVPP2_PRS_RI_VLAN_NONE ~(BIT(2) | BIT(3))
|
|
#define MVPP2_PRS_RI_VLAN_SINGLE BIT(2)
|
|
#define MVPP2_PRS_RI_VLAN_DOUBLE BIT(3)
|
|
#define MVPP2_PRS_RI_VLAN_TRIPLE (BIT(2) | BIT(3))
|
|
#define MVPP2_PRS_RI_CPU_CODE_MASK 0x70
|
|
#define MVPP2_PRS_RI_CPU_CODE_RX_SPEC BIT(4)
|
|
#define MVPP2_PRS_RI_L2_CAST_MASK 0x600
|
|
#define MVPP2_PRS_RI_L2_UCAST ~(BIT(9) | BIT(10))
|
|
#define MVPP2_PRS_RI_L2_MCAST BIT(9)
|
|
#define MVPP2_PRS_RI_L2_BCAST BIT(10)
|
|
#define MVPP2_PRS_RI_PPPOE_MASK 0x800
|
|
#define MVPP2_PRS_RI_L3_PROTO_MASK 0x7000
|
|
#define MVPP2_PRS_RI_L3_UN ~(BIT(12) | BIT(13) | BIT(14))
|
|
#define MVPP2_PRS_RI_L3_IP4 BIT(12)
|
|
#define MVPP2_PRS_RI_L3_IP4_OPT BIT(13)
|
|
#define MVPP2_PRS_RI_L3_IP4_OTHER (BIT(12) | BIT(13))
|
|
#define MVPP2_PRS_RI_L3_IP6 BIT(14)
|
|
#define MVPP2_PRS_RI_L3_IP6_EXT (BIT(12) | BIT(14))
|
|
#define MVPP2_PRS_RI_L3_ARP (BIT(13) | BIT(14))
|
|
#define MVPP2_PRS_RI_L3_ADDR_MASK 0x18000
|
|
#define MVPP2_PRS_RI_L3_UCAST ~(BIT(15) | BIT(16))
|
|
#define MVPP2_PRS_RI_L3_MCAST BIT(15)
|
|
#define MVPP2_PRS_RI_L3_BCAST (BIT(15) | BIT(16))
|
|
#define MVPP2_PRS_RI_IP_FRAG_MASK 0x20000
|
|
#define MVPP2_PRS_RI_UDF3_MASK 0x300000
|
|
#define MVPP2_PRS_RI_UDF3_RX_SPECIAL BIT(21)
|
|
#define MVPP2_PRS_RI_L4_PROTO_MASK 0x1c00000
|
|
#define MVPP2_PRS_RI_L4_TCP BIT(22)
|
|
#define MVPP2_PRS_RI_L4_UDP BIT(23)
|
|
#define MVPP2_PRS_RI_L4_OTHER (BIT(22) | BIT(23))
|
|
#define MVPP2_PRS_RI_UDF7_MASK 0x60000000
|
|
#define MVPP2_PRS_RI_UDF7_IP6_LITE BIT(29)
|
|
#define MVPP2_PRS_RI_DROP_MASK 0x80000000
|
|
|
|
/* Sram additional info bits assignment */
|
|
#define MVPP2_PRS_IPV4_DIP_AI_BIT BIT(0)
|
|
#define MVPP2_PRS_IPV6_NO_EXT_AI_BIT BIT(0)
|
|
#define MVPP2_PRS_IPV6_EXT_AI_BIT BIT(1)
|
|
#define MVPP2_PRS_IPV6_EXT_AH_AI_BIT BIT(2)
|
|
#define MVPP2_PRS_IPV6_EXT_AH_LEN_AI_BIT BIT(3)
|
|
#define MVPP2_PRS_IPV6_EXT_AH_L4_AI_BIT BIT(4)
|
|
#define MVPP2_PRS_SINGLE_VLAN_AI 0
|
|
#define MVPP2_PRS_DBL_VLAN_AI_BIT BIT(7)
|
|
|
|
/* DSA/EDSA type */
|
|
#define MVPP2_PRS_TAGGED true
|
|
#define MVPP2_PRS_UNTAGGED false
|
|
#define MVPP2_PRS_EDSA true
|
|
#define MVPP2_PRS_DSA false
|
|
|
|
/* MAC entries, shadow udf */
|
|
enum mvpp2_prs_udf {
|
|
MVPP2_PRS_UDF_MAC_DEF,
|
|
MVPP2_PRS_UDF_MAC_RANGE,
|
|
MVPP2_PRS_UDF_L2_DEF,
|
|
MVPP2_PRS_UDF_L2_DEF_COPY,
|
|
MVPP2_PRS_UDF_L2_USER,
|
|
};
|
|
|
|
/* Lookup ID */
|
|
enum mvpp2_prs_lookup {
|
|
MVPP2_PRS_LU_MH,
|
|
MVPP2_PRS_LU_MAC,
|
|
MVPP2_PRS_LU_DSA,
|
|
MVPP2_PRS_LU_VLAN,
|
|
MVPP2_PRS_LU_L2,
|
|
MVPP2_PRS_LU_PPPOE,
|
|
MVPP2_PRS_LU_IP4,
|
|
MVPP2_PRS_LU_IP6,
|
|
MVPP2_PRS_LU_FLOWS,
|
|
MVPP2_PRS_LU_LAST,
|
|
};
|
|
|
|
/* L3 cast enum */
|
|
enum mvpp2_prs_l3_cast {
|
|
MVPP2_PRS_L3_UNI_CAST,
|
|
MVPP2_PRS_L3_MULTI_CAST,
|
|
MVPP2_PRS_L3_BROAD_CAST
|
|
};
|
|
|
|
/* Classifier constants */
|
|
#define MVPP2_CLS_FLOWS_TBL_SIZE 512
|
|
#define MVPP2_CLS_FLOWS_TBL_DATA_WORDS 3
|
|
#define MVPP2_CLS_LKP_TBL_SIZE 64
|
|
|
|
/* BM constants */
|
|
#define MVPP2_BM_POOLS_NUM 8
|
|
#define MVPP2_BM_LONG_BUF_NUM 1024
|
|
#define MVPP2_BM_SHORT_BUF_NUM 2048
|
|
#define MVPP2_BM_POOL_SIZE_MAX (16*1024 - MVPP2_BM_POOL_PTR_ALIGN/4)
|
|
#define MVPP2_BM_POOL_PTR_ALIGN 128
|
|
#define MVPP2_BM_SWF_LONG_POOL(port) ((port > 2) ? 2 : port)
|
|
#define MVPP2_BM_SWF_SHORT_POOL 3
|
|
|
|
/* BM cookie (32 bits) definition */
|
|
#define MVPP2_BM_COOKIE_POOL_OFFS 8
|
|
#define MVPP2_BM_COOKIE_CPU_OFFS 24
|
|
|
|
/* BM short pool packet size
|
|
* These value assure that for SWF the total number
|
|
* of bytes allocated for each buffer will be 512
|
|
*/
|
|
#define MVPP2_BM_SHORT_PKT_SIZE MVPP2_RX_MAX_PKT_SIZE(512)
|
|
|
|
enum mvpp2_bm_type {
|
|
MVPP2_BM_FREE,
|
|
MVPP2_BM_SWF_LONG,
|
|
MVPP2_BM_SWF_SHORT
|
|
};
|
|
|
|
/* Definitions */
|
|
|
|
/* Shared Packet Processor resources */
|
|
struct mvpp2 {
|
|
/* Shared registers' base addresses */
|
|
void __iomem *base;
|
|
void __iomem *lms_base;
|
|
|
|
/* Common clocks */
|
|
struct clk *pp_clk;
|
|
struct clk *gop_clk;
|
|
|
|
/* List of pointers to port structures */
|
|
struct mvpp2_port **port_list;
|
|
|
|
/* Aggregated TXQs */
|
|
struct mvpp2_tx_queue *aggr_txqs;
|
|
|
|
/* BM pools */
|
|
struct mvpp2_bm_pool *bm_pools;
|
|
|
|
/* PRS shadow table */
|
|
struct mvpp2_prs_shadow *prs_shadow;
|
|
/* PRS auxiliary table for double vlan entries control */
|
|
bool *prs_double_vlans;
|
|
|
|
/* Tclk value */
|
|
u32 tclk;
|
|
};
|
|
|
|
struct mvpp2_pcpu_stats {
|
|
struct u64_stats_sync syncp;
|
|
u64 rx_packets;
|
|
u64 rx_bytes;
|
|
u64 tx_packets;
|
|
u64 tx_bytes;
|
|
};
|
|
|
|
/* Per-CPU port control */
|
|
struct mvpp2_port_pcpu {
|
|
struct hrtimer tx_done_timer;
|
|
bool timer_scheduled;
|
|
/* Tasklet for egress finalization */
|
|
struct tasklet_struct tx_done_tasklet;
|
|
};
|
|
|
|
struct mvpp2_port {
|
|
u8 id;
|
|
|
|
int irq;
|
|
|
|
struct mvpp2 *priv;
|
|
|
|
/* Per-port registers' base address */
|
|
void __iomem *base;
|
|
|
|
struct mvpp2_rx_queue **rxqs;
|
|
struct mvpp2_tx_queue **txqs;
|
|
struct net_device *dev;
|
|
|
|
int pkt_size;
|
|
|
|
u32 pending_cause_rx;
|
|
struct napi_struct napi;
|
|
|
|
/* Per-CPU port control */
|
|
struct mvpp2_port_pcpu __percpu *pcpu;
|
|
|
|
/* Flags */
|
|
unsigned long flags;
|
|
|
|
u16 tx_ring_size;
|
|
u16 rx_ring_size;
|
|
struct mvpp2_pcpu_stats __percpu *stats;
|
|
|
|
struct phy_device *phy_dev;
|
|
phy_interface_t phy_interface;
|
|
struct device_node *phy_node;
|
|
unsigned int link;
|
|
unsigned int duplex;
|
|
unsigned int speed;
|
|
|
|
struct mvpp2_bm_pool *pool_long;
|
|
struct mvpp2_bm_pool *pool_short;
|
|
|
|
/* Index of first port's physical RXQ */
|
|
u8 first_rxq;
|
|
};
|
|
|
|
/* The mvpp2_tx_desc and mvpp2_rx_desc structures describe the
|
|
* layout of the transmit and reception DMA descriptors, and their
|
|
* layout is therefore defined by the hardware design
|
|
*/
|
|
|
|
#define MVPP2_TXD_L3_OFF_SHIFT 0
|
|
#define MVPP2_TXD_IP_HLEN_SHIFT 8
|
|
#define MVPP2_TXD_L4_CSUM_FRAG BIT(13)
|
|
#define MVPP2_TXD_L4_CSUM_NOT BIT(14)
|
|
#define MVPP2_TXD_IP_CSUM_DISABLE BIT(15)
|
|
#define MVPP2_TXD_PADDING_DISABLE BIT(23)
|
|
#define MVPP2_TXD_L4_UDP BIT(24)
|
|
#define MVPP2_TXD_L3_IP6 BIT(26)
|
|
#define MVPP2_TXD_L_DESC BIT(28)
|
|
#define MVPP2_TXD_F_DESC BIT(29)
|
|
|
|
#define MVPP2_RXD_ERR_SUMMARY BIT(15)
|
|
#define MVPP2_RXD_ERR_CODE_MASK (BIT(13) | BIT(14))
|
|
#define MVPP2_RXD_ERR_CRC 0x0
|
|
#define MVPP2_RXD_ERR_OVERRUN BIT(13)
|
|
#define MVPP2_RXD_ERR_RESOURCE (BIT(13) | BIT(14))
|
|
#define MVPP2_RXD_BM_POOL_ID_OFFS 16
|
|
#define MVPP2_RXD_BM_POOL_ID_MASK (BIT(16) | BIT(17) | BIT(18))
|
|
#define MVPP2_RXD_HWF_SYNC BIT(21)
|
|
#define MVPP2_RXD_L4_CSUM_OK BIT(22)
|
|
#define MVPP2_RXD_IP4_HEADER_ERR BIT(24)
|
|
#define MVPP2_RXD_L4_TCP BIT(25)
|
|
#define MVPP2_RXD_L4_UDP BIT(26)
|
|
#define MVPP2_RXD_L3_IP4 BIT(28)
|
|
#define MVPP2_RXD_L3_IP6 BIT(30)
|
|
#define MVPP2_RXD_BUF_HDR BIT(31)
|
|
|
|
struct mvpp2_tx_desc {
|
|
u32 command; /* Options used by HW for packet transmitting.*/
|
|
u8 packet_offset; /* the offset from the buffer beginning */
|
|
u8 phys_txq; /* destination queue ID */
|
|
u16 data_size; /* data size of transmitted packet in bytes */
|
|
u32 buf_phys_addr; /* physical addr of transmitted buffer */
|
|
u32 buf_cookie; /* cookie for access to TX buffer in tx path */
|
|
u32 reserved1[3]; /* hw_cmd (for future use, BM, PON, PNC) */
|
|
u32 reserved2; /* reserved (for future use) */
|
|
};
|
|
|
|
struct mvpp2_rx_desc {
|
|
u32 status; /* info about received packet */
|
|
u16 reserved1; /* parser_info (for future use, PnC) */
|
|
u16 data_size; /* size of received packet in bytes */
|
|
u32 buf_phys_addr; /* physical address of the buffer */
|
|
u32 buf_cookie; /* cookie for access to RX buffer in rx path */
|
|
u16 reserved2; /* gem_port_id (for future use, PON) */
|
|
u16 reserved3; /* csum_l4 (for future use, PnC) */
|
|
u8 reserved4; /* bm_qset (for future use, BM) */
|
|
u8 reserved5;
|
|
u16 reserved6; /* classify_info (for future use, PnC) */
|
|
u32 reserved7; /* flow_id (for future use, PnC) */
|
|
u32 reserved8;
|
|
};
|
|
|
|
/* Per-CPU Tx queue control */
|
|
struct mvpp2_txq_pcpu {
|
|
int cpu;
|
|
|
|
/* Number of Tx DMA descriptors in the descriptor ring */
|
|
int size;
|
|
|
|
/* Number of currently used Tx DMA descriptor in the
|
|
* descriptor ring
|
|
*/
|
|
int count;
|
|
|
|
/* Number of Tx DMA descriptors reserved for each CPU */
|
|
int reserved_num;
|
|
|
|
/* Array of transmitted skb */
|
|
struct sk_buff **tx_skb;
|
|
|
|
/* Array of transmitted buffers' physical addresses */
|
|
dma_addr_t *tx_buffs;
|
|
|
|
/* Index of last TX DMA descriptor that was inserted */
|
|
int txq_put_index;
|
|
|
|
/* Index of the TX DMA descriptor to be cleaned up */
|
|
int txq_get_index;
|
|
};
|
|
|
|
struct mvpp2_tx_queue {
|
|
/* Physical number of this Tx queue */
|
|
u8 id;
|
|
|
|
/* Logical number of this Tx queue */
|
|
u8 log_id;
|
|
|
|
/* Number of Tx DMA descriptors in the descriptor ring */
|
|
int size;
|
|
|
|
/* Number of currently used Tx DMA descriptor in the descriptor ring */
|
|
int count;
|
|
|
|
/* Per-CPU control of physical Tx queues */
|
|
struct mvpp2_txq_pcpu __percpu *pcpu;
|
|
|
|
/* Array of transmitted skb */
|
|
struct sk_buff **tx_skb;
|
|
|
|
u32 done_pkts_coal;
|
|
|
|
/* Virtual address of thex Tx DMA descriptors array */
|
|
struct mvpp2_tx_desc *descs;
|
|
|
|
/* DMA address of the Tx DMA descriptors array */
|
|
dma_addr_t descs_phys;
|
|
|
|
/* Index of the last Tx DMA descriptor */
|
|
int last_desc;
|
|
|
|
/* Index of the next Tx DMA descriptor to process */
|
|
int next_desc_to_proc;
|
|
};
|
|
|
|
struct mvpp2_rx_queue {
|
|
/* RX queue number, in the range 0-31 for physical RXQs */
|
|
u8 id;
|
|
|
|
/* Num of rx descriptors in the rx descriptor ring */
|
|
int size;
|
|
|
|
u32 pkts_coal;
|
|
u32 time_coal;
|
|
|
|
/* Virtual address of the RX DMA descriptors array */
|
|
struct mvpp2_rx_desc *descs;
|
|
|
|
/* DMA address of the RX DMA descriptors array */
|
|
dma_addr_t descs_phys;
|
|
|
|
/* Index of the last RX DMA descriptor */
|
|
int last_desc;
|
|
|
|
/* Index of the next RX DMA descriptor to process */
|
|
int next_desc_to_proc;
|
|
|
|
/* ID of port to which physical RXQ is mapped */
|
|
int port;
|
|
|
|
/* Port's logic RXQ number to which physical RXQ is mapped */
|
|
int logic_rxq;
|
|
};
|
|
|
|
union mvpp2_prs_tcam_entry {
|
|
u32 word[MVPP2_PRS_TCAM_WORDS];
|
|
u8 byte[MVPP2_PRS_TCAM_WORDS * 4];
|
|
};
|
|
|
|
union mvpp2_prs_sram_entry {
|
|
u32 word[MVPP2_PRS_SRAM_WORDS];
|
|
u8 byte[MVPP2_PRS_SRAM_WORDS * 4];
|
|
};
|
|
|
|
struct mvpp2_prs_entry {
|
|
u32 index;
|
|
union mvpp2_prs_tcam_entry tcam;
|
|
union mvpp2_prs_sram_entry sram;
|
|
};
|
|
|
|
struct mvpp2_prs_shadow {
|
|
bool valid;
|
|
bool finish;
|
|
|
|
/* Lookup ID */
|
|
int lu;
|
|
|
|
/* User defined offset */
|
|
int udf;
|
|
|
|
/* Result info */
|
|
u32 ri;
|
|
u32 ri_mask;
|
|
};
|
|
|
|
struct mvpp2_cls_flow_entry {
|
|
u32 index;
|
|
u32 data[MVPP2_CLS_FLOWS_TBL_DATA_WORDS];
|
|
};
|
|
|
|
struct mvpp2_cls_lookup_entry {
|
|
u32 lkpid;
|
|
u32 way;
|
|
u32 data;
|
|
};
|
|
|
|
struct mvpp2_bm_pool {
|
|
/* Pool number in the range 0-7 */
|
|
int id;
|
|
enum mvpp2_bm_type type;
|
|
|
|
/* Buffer Pointers Pool External (BPPE) size */
|
|
int size;
|
|
/* Number of buffers for this pool */
|
|
int buf_num;
|
|
/* Pool buffer size */
|
|
int buf_size;
|
|
/* Packet size */
|
|
int pkt_size;
|
|
|
|
/* BPPE virtual base address */
|
|
u32 *virt_addr;
|
|
/* BPPE physical base address */
|
|
dma_addr_t phys_addr;
|
|
|
|
/* Ports using BM pool */
|
|
u32 port_map;
|
|
|
|
/* Occupied buffers indicator */
|
|
atomic_t in_use;
|
|
int in_use_thresh;
|
|
};
|
|
|
|
struct mvpp2_buff_hdr {
|
|
u32 next_buff_phys_addr;
|
|
u32 next_buff_virt_addr;
|
|
u16 byte_count;
|
|
u16 info;
|
|
u8 reserved1; /* bm_qset (for future use, BM) */
|
|
};
|
|
|
|
/* Buffer header info bits */
|
|
#define MVPP2_B_HDR_INFO_MC_ID_MASK 0xfff
|
|
#define MVPP2_B_HDR_INFO_MC_ID(info) ((info) & MVPP2_B_HDR_INFO_MC_ID_MASK)
|
|
#define MVPP2_B_HDR_INFO_LAST_OFFS 12
|
|
#define MVPP2_B_HDR_INFO_LAST_MASK BIT(12)
|
|
#define MVPP2_B_HDR_INFO_IS_LAST(info) \
|
|
((info & MVPP2_B_HDR_INFO_LAST_MASK) >> MVPP2_B_HDR_INFO_LAST_OFFS)
|
|
|
|
/* Static declaractions */
|
|
|
|
/* Number of RXQs used by single port */
|
|
static int rxq_number = MVPP2_DEFAULT_RXQ;
|
|
/* Number of TXQs used by single port */
|
|
static int txq_number = MVPP2_MAX_TXQ;
|
|
|
|
#define MVPP2_DRIVER_NAME "mvpp2"
|
|
#define MVPP2_DRIVER_VERSION "1.0"
|
|
|
|
/* Utility/helper methods */
|
|
|
|
static void mvpp2_write(struct mvpp2 *priv, u32 offset, u32 data)
|
|
{
|
|
writel(data, priv->base + offset);
|
|
}
|
|
|
|
static u32 mvpp2_read(struct mvpp2 *priv, u32 offset)
|
|
{
|
|
return readl(priv->base + offset);
|
|
}
|
|
|
|
static void mvpp2_txq_inc_get(struct mvpp2_txq_pcpu *txq_pcpu)
|
|
{
|
|
txq_pcpu->txq_get_index++;
|
|
if (txq_pcpu->txq_get_index == txq_pcpu->size)
|
|
txq_pcpu->txq_get_index = 0;
|
|
}
|
|
|
|
static void mvpp2_txq_inc_put(struct mvpp2_txq_pcpu *txq_pcpu,
|
|
struct sk_buff *skb,
|
|
struct mvpp2_tx_desc *tx_desc)
|
|
{
|
|
txq_pcpu->tx_skb[txq_pcpu->txq_put_index] = skb;
|
|
if (skb)
|
|
txq_pcpu->tx_buffs[txq_pcpu->txq_put_index] =
|
|
tx_desc->buf_phys_addr;
|
|
txq_pcpu->txq_put_index++;
|
|
if (txq_pcpu->txq_put_index == txq_pcpu->size)
|
|
txq_pcpu->txq_put_index = 0;
|
|
}
|
|
|
|
/* Get number of physical egress port */
|
|
static inline int mvpp2_egress_port(struct mvpp2_port *port)
|
|
{
|
|
return MVPP2_MAX_TCONT + port->id;
|
|
}
|
|
|
|
/* Get number of physical TXQ */
|
|
static inline int mvpp2_txq_phys(int port, int txq)
|
|
{
|
|
return (MVPP2_MAX_TCONT + port) * MVPP2_MAX_TXQ + txq;
|
|
}
|
|
|
|
/* Parser configuration routines */
|
|
|
|
/* Update parser tcam and sram hw entries */
|
|
static int mvpp2_prs_hw_write(struct mvpp2 *priv, struct mvpp2_prs_entry *pe)
|
|
{
|
|
int i;
|
|
|
|
if (pe->index > MVPP2_PRS_TCAM_SRAM_SIZE - 1)
|
|
return -EINVAL;
|
|
|
|
/* Clear entry invalidation bit */
|
|
pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] &= ~MVPP2_PRS_TCAM_INV_MASK;
|
|
|
|
/* Write tcam index - indirect access */
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index);
|
|
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), pe->tcam.word[i]);
|
|
|
|
/* Write sram index - indirect access */
|
|
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index);
|
|
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
|
|
mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), pe->sram.word[i]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Read tcam entry from hw */
|
|
static int mvpp2_prs_hw_read(struct mvpp2 *priv, struct mvpp2_prs_entry *pe)
|
|
{
|
|
int i;
|
|
|
|
if (pe->index > MVPP2_PRS_TCAM_SRAM_SIZE - 1)
|
|
return -EINVAL;
|
|
|
|
/* Write tcam index - indirect access */
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index);
|
|
|
|
pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] = mvpp2_read(priv,
|
|
MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD));
|
|
if (pe->tcam.word[MVPP2_PRS_TCAM_INV_WORD] & MVPP2_PRS_TCAM_INV_MASK)
|
|
return MVPP2_PRS_TCAM_ENTRY_INVALID;
|
|
|
|
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
|
|
pe->tcam.word[i] = mvpp2_read(priv, MVPP2_PRS_TCAM_DATA_REG(i));
|
|
|
|
/* Write sram index - indirect access */
|
|
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index);
|
|
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
|
|
pe->sram.word[i] = mvpp2_read(priv, MVPP2_PRS_SRAM_DATA_REG(i));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Invalidate tcam hw entry */
|
|
static void mvpp2_prs_hw_inv(struct mvpp2 *priv, int index)
|
|
{
|
|
/* Write index - indirect access */
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index);
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD),
|
|
MVPP2_PRS_TCAM_INV_MASK);
|
|
}
|
|
|
|
/* Enable shadow table entry and set its lookup ID */
|
|
static void mvpp2_prs_shadow_set(struct mvpp2 *priv, int index, int lu)
|
|
{
|
|
priv->prs_shadow[index].valid = true;
|
|
priv->prs_shadow[index].lu = lu;
|
|
}
|
|
|
|
/* Update ri fields in shadow table entry */
|
|
static void mvpp2_prs_shadow_ri_set(struct mvpp2 *priv, int index,
|
|
unsigned int ri, unsigned int ri_mask)
|
|
{
|
|
priv->prs_shadow[index].ri_mask = ri_mask;
|
|
priv->prs_shadow[index].ri = ri;
|
|
}
|
|
|
|
/* Update lookup field in tcam sw entry */
|
|
static void mvpp2_prs_tcam_lu_set(struct mvpp2_prs_entry *pe, unsigned int lu)
|
|
{
|
|
int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_LU_BYTE);
|
|
|
|
pe->tcam.byte[MVPP2_PRS_TCAM_LU_BYTE] = lu;
|
|
pe->tcam.byte[enable_off] = MVPP2_PRS_LU_MASK;
|
|
}
|
|
|
|
/* Update mask for single port in tcam sw entry */
|
|
static void mvpp2_prs_tcam_port_set(struct mvpp2_prs_entry *pe,
|
|
unsigned int port, bool add)
|
|
{
|
|
int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE);
|
|
|
|
if (add)
|
|
pe->tcam.byte[enable_off] &= ~(1 << port);
|
|
else
|
|
pe->tcam.byte[enable_off] |= 1 << port;
|
|
}
|
|
|
|
/* Update port map in tcam sw entry */
|
|
static void mvpp2_prs_tcam_port_map_set(struct mvpp2_prs_entry *pe,
|
|
unsigned int ports)
|
|
{
|
|
unsigned char port_mask = MVPP2_PRS_PORT_MASK;
|
|
int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE);
|
|
|
|
pe->tcam.byte[MVPP2_PRS_TCAM_PORT_BYTE] = 0;
|
|
pe->tcam.byte[enable_off] &= ~port_mask;
|
|
pe->tcam.byte[enable_off] |= ~ports & MVPP2_PRS_PORT_MASK;
|
|
}
|
|
|
|
/* Obtain port map from tcam sw entry */
|
|
static unsigned int mvpp2_prs_tcam_port_map_get(struct mvpp2_prs_entry *pe)
|
|
{
|
|
int enable_off = MVPP2_PRS_TCAM_EN_OFFS(MVPP2_PRS_TCAM_PORT_BYTE);
|
|
|
|
return ~(pe->tcam.byte[enable_off]) & MVPP2_PRS_PORT_MASK;
|
|
}
|
|
|
|
/* Set byte of data and its enable bits in tcam sw entry */
|
|
static void mvpp2_prs_tcam_data_byte_set(struct mvpp2_prs_entry *pe,
|
|
unsigned int offs, unsigned char byte,
|
|
unsigned char enable)
|
|
{
|
|
pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(offs)] = byte;
|
|
pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(offs)] = enable;
|
|
}
|
|
|
|
/* Get byte of data and its enable bits from tcam sw entry */
|
|
static void mvpp2_prs_tcam_data_byte_get(struct mvpp2_prs_entry *pe,
|
|
unsigned int offs, unsigned char *byte,
|
|
unsigned char *enable)
|
|
{
|
|
*byte = pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(offs)];
|
|
*enable = pe->tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(offs)];
|
|
}
|
|
|
|
/* Compare tcam data bytes with a pattern */
|
|
static bool mvpp2_prs_tcam_data_cmp(struct mvpp2_prs_entry *pe, int offs,
|
|
u16 data)
|
|
{
|
|
int off = MVPP2_PRS_TCAM_DATA_BYTE(offs);
|
|
u16 tcam_data;
|
|
|
|
tcam_data = (8 << pe->tcam.byte[off + 1]) | pe->tcam.byte[off];
|
|
if (tcam_data != data)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
/* Update ai bits in tcam sw entry */
|
|
static void mvpp2_prs_tcam_ai_update(struct mvpp2_prs_entry *pe,
|
|
unsigned int bits, unsigned int enable)
|
|
{
|
|
int i, ai_idx = MVPP2_PRS_TCAM_AI_BYTE;
|
|
|
|
for (i = 0; i < MVPP2_PRS_AI_BITS; i++) {
|
|
|
|
if (!(enable & BIT(i)))
|
|
continue;
|
|
|
|
if (bits & BIT(i))
|
|
pe->tcam.byte[ai_idx] |= 1 << i;
|
|
else
|
|
pe->tcam.byte[ai_idx] &= ~(1 << i);
|
|
}
|
|
|
|
pe->tcam.byte[MVPP2_PRS_TCAM_EN_OFFS(ai_idx)] |= enable;
|
|
}
|
|
|
|
/* Get ai bits from tcam sw entry */
|
|
static int mvpp2_prs_tcam_ai_get(struct mvpp2_prs_entry *pe)
|
|
{
|
|
return pe->tcam.byte[MVPP2_PRS_TCAM_AI_BYTE];
|
|
}
|
|
|
|
/* Set ethertype in tcam sw entry */
|
|
static void mvpp2_prs_match_etype(struct mvpp2_prs_entry *pe, int offset,
|
|
unsigned short ethertype)
|
|
{
|
|
mvpp2_prs_tcam_data_byte_set(pe, offset + 0, ethertype >> 8, 0xff);
|
|
mvpp2_prs_tcam_data_byte_set(pe, offset + 1, ethertype & 0xff, 0xff);
|
|
}
|
|
|
|
/* Set bits in sram sw entry */
|
|
static void mvpp2_prs_sram_bits_set(struct mvpp2_prs_entry *pe, int bit_num,
|
|
int val)
|
|
{
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(bit_num)] |= (val << (bit_num % 8));
|
|
}
|
|
|
|
/* Clear bits in sram sw entry */
|
|
static void mvpp2_prs_sram_bits_clear(struct mvpp2_prs_entry *pe, int bit_num,
|
|
int val)
|
|
{
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(bit_num)] &= ~(val << (bit_num % 8));
|
|
}
|
|
|
|
/* Update ri bits in sram sw entry */
|
|
static void mvpp2_prs_sram_ri_update(struct mvpp2_prs_entry *pe,
|
|
unsigned int bits, unsigned int mask)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < MVPP2_PRS_SRAM_RI_CTRL_BITS; i++) {
|
|
int ri_off = MVPP2_PRS_SRAM_RI_OFFS;
|
|
|
|
if (!(mask & BIT(i)))
|
|
continue;
|
|
|
|
if (bits & BIT(i))
|
|
mvpp2_prs_sram_bits_set(pe, ri_off + i, 1);
|
|
else
|
|
mvpp2_prs_sram_bits_clear(pe, ri_off + i, 1);
|
|
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_RI_CTRL_OFFS + i, 1);
|
|
}
|
|
}
|
|
|
|
/* Obtain ri bits from sram sw entry */
|
|
static int mvpp2_prs_sram_ri_get(struct mvpp2_prs_entry *pe)
|
|
{
|
|
return pe->sram.word[MVPP2_PRS_SRAM_RI_WORD];
|
|
}
|
|
|
|
/* Update ai bits in sram sw entry */
|
|
static void mvpp2_prs_sram_ai_update(struct mvpp2_prs_entry *pe,
|
|
unsigned int bits, unsigned int mask)
|
|
{
|
|
unsigned int i;
|
|
int ai_off = MVPP2_PRS_SRAM_AI_OFFS;
|
|
|
|
for (i = 0; i < MVPP2_PRS_SRAM_AI_CTRL_BITS; i++) {
|
|
|
|
if (!(mask & BIT(i)))
|
|
continue;
|
|
|
|
if (bits & BIT(i))
|
|
mvpp2_prs_sram_bits_set(pe, ai_off + i, 1);
|
|
else
|
|
mvpp2_prs_sram_bits_clear(pe, ai_off + i, 1);
|
|
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_AI_CTRL_OFFS + i, 1);
|
|
}
|
|
}
|
|
|
|
/* Read ai bits from sram sw entry */
|
|
static int mvpp2_prs_sram_ai_get(struct mvpp2_prs_entry *pe)
|
|
{
|
|
u8 bits;
|
|
int ai_off = MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_AI_OFFS);
|
|
int ai_en_off = ai_off + 1;
|
|
int ai_shift = MVPP2_PRS_SRAM_AI_OFFS % 8;
|
|
|
|
bits = (pe->sram.byte[ai_off] >> ai_shift) |
|
|
(pe->sram.byte[ai_en_off] << (8 - ai_shift));
|
|
|
|
return bits;
|
|
}
|
|
|
|
/* In sram sw entry set lookup ID field of the tcam key to be used in the next
|
|
* lookup interation
|
|
*/
|
|
static void mvpp2_prs_sram_next_lu_set(struct mvpp2_prs_entry *pe,
|
|
unsigned int lu)
|
|
{
|
|
int sram_next_off = MVPP2_PRS_SRAM_NEXT_LU_OFFS;
|
|
|
|
mvpp2_prs_sram_bits_clear(pe, sram_next_off,
|
|
MVPP2_PRS_SRAM_NEXT_LU_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, sram_next_off, lu);
|
|
}
|
|
|
|
/* In the sram sw entry set sign and value of the next lookup offset
|
|
* and the offset value generated to the classifier
|
|
*/
|
|
static void mvpp2_prs_sram_shift_set(struct mvpp2_prs_entry *pe, int shift,
|
|
unsigned int op)
|
|
{
|
|
/* Set sign */
|
|
if (shift < 0) {
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1);
|
|
shift = 0 - shift;
|
|
} else {
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1);
|
|
}
|
|
|
|
/* Set value */
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_SHIFT_OFFS)] =
|
|
(unsigned char)shift;
|
|
|
|
/* Reset and set operation */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS, op);
|
|
|
|
/* Set base offset as current */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1);
|
|
}
|
|
|
|
/* In the sram sw entry set sign and value of the user defined offset
|
|
* generated to the classifier
|
|
*/
|
|
static void mvpp2_prs_sram_offset_set(struct mvpp2_prs_entry *pe,
|
|
unsigned int type, int offset,
|
|
unsigned int op)
|
|
{
|
|
/* Set sign */
|
|
if (offset < 0) {
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1);
|
|
offset = 0 - offset;
|
|
} else {
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1);
|
|
}
|
|
|
|
/* Set value */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_OFFS,
|
|
MVPP2_PRS_SRAM_UDF_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_OFFS, offset);
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_UDF_OFFS +
|
|
MVPP2_PRS_SRAM_UDF_BITS)] &=
|
|
~(MVPP2_PRS_SRAM_UDF_MASK >> (8 - (MVPP2_PRS_SRAM_UDF_OFFS % 8)));
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_UDF_OFFS +
|
|
MVPP2_PRS_SRAM_UDF_BITS)] |=
|
|
(offset >> (8 - (MVPP2_PRS_SRAM_UDF_OFFS % 8)));
|
|
|
|
/* Set offset type */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS,
|
|
MVPP2_PRS_SRAM_UDF_TYPE_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS, type);
|
|
|
|
/* Set offset operation */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS, op);
|
|
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS +
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_BITS)] &=
|
|
~(MVPP2_PRS_SRAM_OP_SEL_UDF_MASK >>
|
|
(8 - (MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS % 8)));
|
|
|
|
pe->sram.byte[MVPP2_BIT_TO_BYTE(MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS +
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_BITS)] |=
|
|
(op >> (8 - (MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS % 8)));
|
|
|
|
/* Set base offset as current */
|
|
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1);
|
|
}
|
|
|
|
/* Find parser flow entry */
|
|
static struct mvpp2_prs_entry *mvpp2_prs_flow_find(struct mvpp2 *priv, int flow)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return NULL;
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_FLOWS);
|
|
|
|
/* Go through the all entires with MVPP2_PRS_LU_FLOWS */
|
|
for (tid = MVPP2_PRS_TCAM_SRAM_SIZE - 1; tid >= 0; tid--) {
|
|
u8 bits;
|
|
|
|
if (!priv->prs_shadow[tid].valid ||
|
|
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_FLOWS)
|
|
continue;
|
|
|
|
pe->index = tid;
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
bits = mvpp2_prs_sram_ai_get(pe);
|
|
|
|
/* Sram store classification lookup ID in AI bits [5:0] */
|
|
if ((bits & MVPP2_PRS_FLOW_ID_MASK) == flow)
|
|
return pe;
|
|
}
|
|
kfree(pe);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Return first free tcam index, seeking from start to end */
|
|
static int mvpp2_prs_tcam_first_free(struct mvpp2 *priv, unsigned char start,
|
|
unsigned char end)
|
|
{
|
|
int tid;
|
|
|
|
if (start > end)
|
|
swap(start, end);
|
|
|
|
if (end >= MVPP2_PRS_TCAM_SRAM_SIZE)
|
|
end = MVPP2_PRS_TCAM_SRAM_SIZE - 1;
|
|
|
|
for (tid = start; tid <= end; tid++) {
|
|
if (!priv->prs_shadow[tid].valid)
|
|
return tid;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Enable/disable dropping all mac da's */
|
|
static void mvpp2_prs_mac_drop_all_set(struct mvpp2 *priv, int port, bool add)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
|
|
if (priv->prs_shadow[MVPP2_PE_DROP_ALL].valid) {
|
|
/* Entry exist - update port only */
|
|
pe.index = MVPP2_PE_DROP_ALL;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
} else {
|
|
/* Entry doesn't exist - create new */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
|
|
pe.index = MVPP2_PE_DROP_ALL;
|
|
|
|
/* Non-promiscuous mode for all ports - DROP unknown packets */
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
|
|
MVPP2_PRS_RI_DROP_MASK);
|
|
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, 0);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(&pe, port, add);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Set port to promiscuous mode */
|
|
static void mvpp2_prs_mac_promisc_set(struct mvpp2 *priv, int port, bool add)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
|
|
/* Promiscuous mode - Accept unknown packets */
|
|
|
|
if (priv->prs_shadow[MVPP2_PE_MAC_PROMISCUOUS].valid) {
|
|
/* Entry exist - update port only */
|
|
pe.index = MVPP2_PE_MAC_PROMISCUOUS;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
} else {
|
|
/* Entry doesn't exist - create new */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
|
|
pe.index = MVPP2_PE_MAC_PROMISCUOUS;
|
|
|
|
/* Continue - set next lookup */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA);
|
|
|
|
/* Set result info bits */
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L2_UCAST,
|
|
MVPP2_PRS_RI_L2_CAST_MASK);
|
|
|
|
/* Shift to ethertype */
|
|
mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, 0);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(&pe, port, add);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Accept multicast */
|
|
static void mvpp2_prs_mac_multi_set(struct mvpp2 *priv, int port, int index,
|
|
bool add)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
unsigned char da_mc;
|
|
|
|
/* Ethernet multicast address first byte is
|
|
* 0x01 for IPv4 and 0x33 for IPv6
|
|
*/
|
|
da_mc = (index == MVPP2_PE_MAC_MC_ALL) ? 0x01 : 0x33;
|
|
|
|
if (priv->prs_shadow[index].valid) {
|
|
/* Entry exist - update port only */
|
|
pe.index = index;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
} else {
|
|
/* Entry doesn't exist - create new */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
|
|
pe.index = index;
|
|
|
|
/* Continue - set next lookup */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA);
|
|
|
|
/* Set result info bits */
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L2_MCAST,
|
|
MVPP2_PRS_RI_L2_CAST_MASK);
|
|
|
|
/* Update tcam entry data first byte */
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0, da_mc, 0xff);
|
|
|
|
/* Shift to ethertype */
|
|
mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, 0);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(&pe, port, add);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Set entry for dsa packets */
|
|
static void mvpp2_prs_dsa_tag_set(struct mvpp2 *priv, int port, bool add,
|
|
bool tagged, bool extend)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid, shift;
|
|
|
|
if (extend) {
|
|
tid = tagged ? MVPP2_PE_EDSA_TAGGED : MVPP2_PE_EDSA_UNTAGGED;
|
|
shift = 8;
|
|
} else {
|
|
tid = tagged ? MVPP2_PE_DSA_TAGGED : MVPP2_PE_DSA_UNTAGGED;
|
|
shift = 4;
|
|
}
|
|
|
|
if (priv->prs_shadow[tid].valid) {
|
|
/* Entry exist - update port only */
|
|
pe.index = tid;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
} else {
|
|
/* Entry doesn't exist - create new */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
|
|
pe.index = tid;
|
|
|
|
/* Shift 4 bytes if DSA tag or 8 bytes in case of EDSA tag*/
|
|
mvpp2_prs_sram_shift_set(&pe, shift,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA);
|
|
|
|
if (tagged) {
|
|
/* Set tagged bit in DSA tag */
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0,
|
|
MVPP2_PRS_TCAM_DSA_TAGGED_BIT,
|
|
MVPP2_PRS_TCAM_DSA_TAGGED_BIT);
|
|
/* Clear all ai bits for next iteration */
|
|
mvpp2_prs_sram_ai_update(&pe, 0,
|
|
MVPP2_PRS_SRAM_AI_MASK);
|
|
/* If packet is tagged continue check vlans */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
|
|
} else {
|
|
/* Set result info bits to 'no vlans' */
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
}
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, 0);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(&pe, port, add);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Set entry for dsa ethertype */
|
|
static void mvpp2_prs_dsa_tag_ethertype_set(struct mvpp2 *priv, int port,
|
|
bool add, bool tagged, bool extend)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid, shift, port_mask;
|
|
|
|
if (extend) {
|
|
tid = tagged ? MVPP2_PE_ETYPE_EDSA_TAGGED :
|
|
MVPP2_PE_ETYPE_EDSA_UNTAGGED;
|
|
port_mask = 0;
|
|
shift = 8;
|
|
} else {
|
|
tid = tagged ? MVPP2_PE_ETYPE_DSA_TAGGED :
|
|
MVPP2_PE_ETYPE_DSA_UNTAGGED;
|
|
port_mask = MVPP2_PRS_PORT_MASK;
|
|
shift = 4;
|
|
}
|
|
|
|
if (priv->prs_shadow[tid].valid) {
|
|
/* Entry exist - update port only */
|
|
pe.index = tid;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
} else {
|
|
/* Entry doesn't exist - create new */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
|
|
pe.index = tid;
|
|
|
|
/* Set ethertype */
|
|
mvpp2_prs_match_etype(&pe, 0, ETH_P_EDSA);
|
|
mvpp2_prs_match_etype(&pe, 2, 0);
|
|
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DSA_MASK,
|
|
MVPP2_PRS_RI_DSA_MASK);
|
|
/* Shift ethertype + 2 byte reserved + tag*/
|
|
mvpp2_prs_sram_shift_set(&pe, 2 + MVPP2_ETH_TYPE_LEN + shift,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA);
|
|
|
|
if (tagged) {
|
|
/* Set tagged bit in DSA tag */
|
|
mvpp2_prs_tcam_data_byte_set(&pe,
|
|
MVPP2_ETH_TYPE_LEN + 2 + 3,
|
|
MVPP2_PRS_TCAM_DSA_TAGGED_BIT,
|
|
MVPP2_PRS_TCAM_DSA_TAGGED_BIT);
|
|
/* Clear all ai bits for next iteration */
|
|
mvpp2_prs_sram_ai_update(&pe, 0,
|
|
MVPP2_PRS_SRAM_AI_MASK);
|
|
/* If packet is tagged continue check vlans */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
|
|
} else {
|
|
/* Set result info bits to 'no vlans' */
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
}
|
|
/* Mask/unmask all ports, depending on dsa type */
|
|
mvpp2_prs_tcam_port_map_set(&pe, port_mask);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(&pe, port, add);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Search for existing single/triple vlan entry */
|
|
static struct mvpp2_prs_entry *mvpp2_prs_vlan_find(struct mvpp2 *priv,
|
|
unsigned short tpid, int ai)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return NULL;
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN);
|
|
|
|
/* Go through the all entries with MVPP2_PRS_LU_VLAN */
|
|
for (tid = MVPP2_PE_FIRST_FREE_TID;
|
|
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
|
|
unsigned int ri_bits, ai_bits;
|
|
bool match;
|
|
|
|
if (!priv->prs_shadow[tid].valid ||
|
|
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN)
|
|
continue;
|
|
|
|
pe->index = tid;
|
|
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
match = mvpp2_prs_tcam_data_cmp(pe, 0, swab16(tpid));
|
|
if (!match)
|
|
continue;
|
|
|
|
/* Get vlan type */
|
|
ri_bits = mvpp2_prs_sram_ri_get(pe);
|
|
ri_bits &= MVPP2_PRS_RI_VLAN_MASK;
|
|
|
|
/* Get current ai value from tcam */
|
|
ai_bits = mvpp2_prs_tcam_ai_get(pe);
|
|
/* Clear double vlan bit */
|
|
ai_bits &= ~MVPP2_PRS_DBL_VLAN_AI_BIT;
|
|
|
|
if (ai != ai_bits)
|
|
continue;
|
|
|
|
if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE ||
|
|
ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE)
|
|
return pe;
|
|
}
|
|
kfree(pe);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Add/update single/triple vlan entry */
|
|
static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai,
|
|
unsigned int port_map)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid_aux, tid;
|
|
int ret = 0;
|
|
|
|
pe = mvpp2_prs_vlan_find(priv, tpid, ai);
|
|
|
|
if (!pe) {
|
|
/* Create new tcam entry */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_LAST_FREE_TID,
|
|
MVPP2_PE_FIRST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return -ENOMEM;
|
|
|
|
/* Get last double vlan tid */
|
|
for (tid_aux = MVPP2_PE_LAST_FREE_TID;
|
|
tid_aux >= MVPP2_PE_FIRST_FREE_TID; tid_aux--) {
|
|
unsigned int ri_bits;
|
|
|
|
if (!priv->prs_shadow[tid_aux].valid ||
|
|
priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN)
|
|
continue;
|
|
|
|
pe->index = tid_aux;
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
ri_bits = mvpp2_prs_sram_ri_get(pe);
|
|
if ((ri_bits & MVPP2_PRS_RI_VLAN_MASK) ==
|
|
MVPP2_PRS_RI_VLAN_DOUBLE)
|
|
break;
|
|
}
|
|
|
|
if (tid <= tid_aux) {
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
|
|
memset(pe, 0 , sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN);
|
|
pe->index = tid;
|
|
|
|
mvpp2_prs_match_etype(pe, 0, tpid);
|
|
|
|
mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_L2);
|
|
/* Shift 4 bytes - skip 1 vlan tag */
|
|
mvpp2_prs_sram_shift_set(pe, MVPP2_VLAN_TAG_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Clear all ai bits for next iteration */
|
|
mvpp2_prs_sram_ai_update(pe, 0, MVPP2_PRS_SRAM_AI_MASK);
|
|
|
|
if (ai == MVPP2_PRS_SINGLE_VLAN_AI) {
|
|
mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_SINGLE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
} else {
|
|
ai |= MVPP2_PRS_DBL_VLAN_AI_BIT;
|
|
mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_TRIPLE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
}
|
|
mvpp2_prs_tcam_ai_update(pe, ai, MVPP2_PRS_SRAM_AI_MASK);
|
|
|
|
mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_VLAN);
|
|
}
|
|
/* Update ports' mask */
|
|
mvpp2_prs_tcam_port_map_set(pe, port_map);
|
|
|
|
mvpp2_prs_hw_write(priv, pe);
|
|
|
|
error:
|
|
kfree(pe);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Get first free double vlan ai number */
|
|
static int mvpp2_prs_double_vlan_ai_free_get(struct mvpp2 *priv)
|
|
{
|
|
int i;
|
|
|
|
for (i = 1; i < MVPP2_PRS_DBL_VLANS_MAX; i++) {
|
|
if (!priv->prs_double_vlans[i])
|
|
return i;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Search for existing double vlan entry */
|
|
static struct mvpp2_prs_entry *mvpp2_prs_double_vlan_find(struct mvpp2 *priv,
|
|
unsigned short tpid1,
|
|
unsigned short tpid2)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return NULL;
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN);
|
|
|
|
/* Go through the all entries with MVPP2_PRS_LU_VLAN */
|
|
for (tid = MVPP2_PE_FIRST_FREE_TID;
|
|
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
|
|
unsigned int ri_mask;
|
|
bool match;
|
|
|
|
if (!priv->prs_shadow[tid].valid ||
|
|
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN)
|
|
continue;
|
|
|
|
pe->index = tid;
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
|
|
match = mvpp2_prs_tcam_data_cmp(pe, 0, swab16(tpid1))
|
|
&& mvpp2_prs_tcam_data_cmp(pe, 4, swab16(tpid2));
|
|
|
|
if (!match)
|
|
continue;
|
|
|
|
ri_mask = mvpp2_prs_sram_ri_get(pe) & MVPP2_PRS_RI_VLAN_MASK;
|
|
if (ri_mask == MVPP2_PRS_RI_VLAN_DOUBLE)
|
|
return pe;
|
|
}
|
|
kfree(pe);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Add or update double vlan entry */
|
|
static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1,
|
|
unsigned short tpid2,
|
|
unsigned int port_map)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid_aux, tid, ai, ret = 0;
|
|
|
|
pe = mvpp2_prs_double_vlan_find(priv, tpid1, tpid2);
|
|
|
|
if (!pe) {
|
|
/* Create new tcam entry */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return -ENOMEM;
|
|
|
|
/* Set ai value for new double vlan entry */
|
|
ai = mvpp2_prs_double_vlan_ai_free_get(priv);
|
|
if (ai < 0) {
|
|
ret = ai;
|
|
goto error;
|
|
}
|
|
|
|
/* Get first single/triple vlan tid */
|
|
for (tid_aux = MVPP2_PE_FIRST_FREE_TID;
|
|
tid_aux <= MVPP2_PE_LAST_FREE_TID; tid_aux++) {
|
|
unsigned int ri_bits;
|
|
|
|
if (!priv->prs_shadow[tid_aux].valid ||
|
|
priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN)
|
|
continue;
|
|
|
|
pe->index = tid_aux;
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
ri_bits = mvpp2_prs_sram_ri_get(pe);
|
|
ri_bits &= MVPP2_PRS_RI_VLAN_MASK;
|
|
if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE ||
|
|
ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE)
|
|
break;
|
|
}
|
|
|
|
if (tid >= tid_aux) {
|
|
ret = -ERANGE;
|
|
goto error;
|
|
}
|
|
|
|
memset(pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_VLAN);
|
|
pe->index = tid;
|
|
|
|
priv->prs_double_vlans[ai] = true;
|
|
|
|
mvpp2_prs_match_etype(pe, 0, tpid1);
|
|
mvpp2_prs_match_etype(pe, 4, tpid2);
|
|
|
|
mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_VLAN);
|
|
/* Shift 8 bytes - skip 2 vlan tags */
|
|
mvpp2_prs_sram_shift_set(pe, 2 * MVPP2_VLAN_TAG_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
mvpp2_prs_sram_ri_update(pe, MVPP2_PRS_RI_VLAN_DOUBLE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
mvpp2_prs_sram_ai_update(pe, ai | MVPP2_PRS_DBL_VLAN_AI_BIT,
|
|
MVPP2_PRS_SRAM_AI_MASK);
|
|
|
|
mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_VLAN);
|
|
}
|
|
|
|
/* Update ports' mask */
|
|
mvpp2_prs_tcam_port_map_set(pe, port_map);
|
|
mvpp2_prs_hw_write(priv, pe);
|
|
|
|
error:
|
|
kfree(pe);
|
|
return ret;
|
|
}
|
|
|
|
/* IPv4 header parsing for fragmentation and L4 offset */
|
|
static int mvpp2_prs_ip4_proto(struct mvpp2 *priv, unsigned short proto,
|
|
unsigned int ri, unsigned int ri_mask)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid;
|
|
|
|
if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) &&
|
|
(proto != IPPROTO_IGMP))
|
|
return -EINVAL;
|
|
|
|
/* Fragmented packet */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
pe.index = tid;
|
|
|
|
/* Set next lu to IPv4 */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_sram_shift_set(&pe, 12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Set L4 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
|
|
sizeof(struct iphdr) - 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
|
|
MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
mvpp2_prs_sram_ri_update(&pe, ri | MVPP2_PRS_RI_IP_FRAG_MASK,
|
|
ri_mask | MVPP2_PRS_RI_IP_FRAG_MASK);
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 5, proto, MVPP2_PRS_TCAM_PROTO_MASK);
|
|
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Not fragmented packet */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe.index = tid;
|
|
/* Clear ri before updating */
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0;
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0;
|
|
mvpp2_prs_sram_ri_update(&pe, ri, ri_mask);
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 2, 0x00, MVPP2_PRS_TCAM_PROTO_MASK_L);
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 3, 0x00, MVPP2_PRS_TCAM_PROTO_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* IPv4 L3 multicast or broadcast */
|
|
static int mvpp2_prs_ip4_cast(struct mvpp2 *priv, unsigned short l3_cast)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int mask, tid;
|
|
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
pe.index = tid;
|
|
|
|
switch (l3_cast) {
|
|
case MVPP2_PRS_L3_MULTI_CAST:
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV4_MC,
|
|
MVPP2_PRS_IPV4_MC_MASK);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST,
|
|
MVPP2_PRS_RI_L3_ADDR_MASK);
|
|
break;
|
|
case MVPP2_PRS_L3_BROAD_CAST:
|
|
mask = MVPP2_PRS_IPV4_BC_MASK;
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0, mask, mask);
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 1, mask, mask);
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 2, mask, mask);
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 3, mask, mask);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_BCAST,
|
|
MVPP2_PRS_RI_L3_ADDR_MASK);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
|
|
MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Set entries for protocols over IPv6 */
|
|
static int mvpp2_prs_ip6_proto(struct mvpp2 *priv, unsigned short proto,
|
|
unsigned int ri, unsigned int ri_mask)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid;
|
|
|
|
if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) &&
|
|
(proto != IPPROTO_ICMPV6) && (proto != IPPROTO_IPIP))
|
|
return -EINVAL;
|
|
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = tid;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, ri, ri_mask);
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
|
|
sizeof(struct ipv6hdr) - 6,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0, proto, MVPP2_PRS_TCAM_PROTO_MASK);
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Write HW */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* IPv6 L3 multicast entry */
|
|
static int mvpp2_prs_ip6_cast(struct mvpp2 *priv, unsigned short l3_cast)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid;
|
|
|
|
if (l3_cast != MVPP2_PRS_L3_MULTI_CAST)
|
|
return -EINVAL;
|
|
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = tid;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST,
|
|
MVPP2_PRS_RI_L3_ADDR_MASK);
|
|
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Shift back to IPv6 NH */
|
|
mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV6_MC,
|
|
MVPP2_PRS_IPV6_MC_MASK);
|
|
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Parser per-port initialization */
|
|
static void mvpp2_prs_hw_port_init(struct mvpp2 *priv, int port, int lu_first,
|
|
int lu_max, int offset)
|
|
{
|
|
u32 val;
|
|
|
|
/* Set lookup ID */
|
|
val = mvpp2_read(priv, MVPP2_PRS_INIT_LOOKUP_REG);
|
|
val &= ~MVPP2_PRS_PORT_LU_MASK(port);
|
|
val |= MVPP2_PRS_PORT_LU_VAL(port, lu_first);
|
|
mvpp2_write(priv, MVPP2_PRS_INIT_LOOKUP_REG, val);
|
|
|
|
/* Set maximum number of loops for packet received from port */
|
|
val = mvpp2_read(priv, MVPP2_PRS_MAX_LOOP_REG(port));
|
|
val &= ~MVPP2_PRS_MAX_LOOP_MASK(port);
|
|
val |= MVPP2_PRS_MAX_LOOP_VAL(port, lu_max);
|
|
mvpp2_write(priv, MVPP2_PRS_MAX_LOOP_REG(port), val);
|
|
|
|
/* Set initial offset for packet header extraction for the first
|
|
* searching loop
|
|
*/
|
|
val = mvpp2_read(priv, MVPP2_PRS_INIT_OFFS_REG(port));
|
|
val &= ~MVPP2_PRS_INIT_OFF_MASK(port);
|
|
val |= MVPP2_PRS_INIT_OFF_VAL(port, offset);
|
|
mvpp2_write(priv, MVPP2_PRS_INIT_OFFS_REG(port), val);
|
|
}
|
|
|
|
/* Default flow entries initialization for all ports */
|
|
static void mvpp2_prs_def_flow_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int port;
|
|
|
|
for (port = 0; port < MVPP2_MAX_PORTS; port++) {
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
pe.index = MVPP2_PE_FIRST_DEFAULT_FLOW - port;
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, 0);
|
|
|
|
/* Set flow ID*/
|
|
mvpp2_prs_sram_ai_update(&pe, port, MVPP2_PRS_FLOW_ID_MASK);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
}
|
|
|
|
/* Set default entry for Marvell Header field */
|
|
static void mvpp2_prs_mh_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
|
|
pe.index = MVPP2_PE_MH_DEFAULT;
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MH);
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_MH_SIZE,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_MAC);
|
|
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Set default entires (place holder) for promiscuous, non-promiscuous and
|
|
* multicast MAC addresses
|
|
*/
|
|
static void mvpp2_prs_mac_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
|
|
/* Non-promiscuous mode for all ports - DROP unknown packets */
|
|
pe.index = MVPP2_PE_MAC_NON_PROMISCUOUS;
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
|
|
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
|
|
MVPP2_PRS_RI_DROP_MASK);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* place holders only - no ports */
|
|
mvpp2_prs_mac_drop_all_set(priv, 0, false);
|
|
mvpp2_prs_mac_promisc_set(priv, 0, false);
|
|
mvpp2_prs_mac_multi_set(priv, MVPP2_PE_MAC_MC_ALL, 0, false);
|
|
mvpp2_prs_mac_multi_set(priv, MVPP2_PE_MAC_MC_IP6, 0, false);
|
|
}
|
|
|
|
/* Set default entries for various types of dsa packets */
|
|
static void mvpp2_prs_dsa_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
|
|
/* None tagged EDSA entry - place holder */
|
|
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED,
|
|
MVPP2_PRS_EDSA);
|
|
|
|
/* Tagged EDSA entry - place holder */
|
|
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
|
|
|
|
/* None tagged DSA entry - place holder */
|
|
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED,
|
|
MVPP2_PRS_DSA);
|
|
|
|
/* Tagged DSA entry - place holder */
|
|
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
|
|
|
|
/* None tagged EDSA ethertype entry - place holder*/
|
|
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
|
|
|
|
/* Tagged EDSA ethertype entry - place holder*/
|
|
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
|
|
|
|
/* None tagged DSA ethertype entry */
|
|
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
|
|
|
|
/* Tagged DSA ethertype entry */
|
|
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
|
|
|
|
/* Set default entry, in case DSA or EDSA tag not found */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
|
|
pe.index = MVPP2_PE_DSA_DEFAULT;
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
|
|
|
|
/* Shift 0 bytes */
|
|
mvpp2_prs_sram_shift_set(&pe, 0, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
|
|
|
|
/* Clear all sram ai bits for next iteration */
|
|
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
|
|
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
}
|
|
|
|
/* Match basic ethertypes */
|
|
static int mvpp2_prs_etype_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid;
|
|
|
|
/* Ethertype: PPPoE */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, ETH_P_PPP_SES);
|
|
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_PPPOE_HDR_SIZE,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_PPPOE_MASK,
|
|
MVPP2_PRS_RI_PPPOE_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = false;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_PPPOE_MASK,
|
|
MVPP2_PRS_RI_PPPOE_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Ethertype: ARP */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, ETH_P_ARP);
|
|
|
|
/* Generate flow in the next iteration*/
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_ARP,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = true;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_ARP,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Ethertype: LBTD */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, MVPP2_IP_LBDT_TYPE);
|
|
|
|
/* Generate flow in the next iteration*/
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
|
|
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
|
|
MVPP2_PRS_RI_CPU_CODE_MASK |
|
|
MVPP2_PRS_RI_UDF3_MASK);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = true;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
|
|
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
|
|
MVPP2_PRS_RI_CPU_CODE_MASK |
|
|
MVPP2_PRS_RI_UDF3_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Ethertype: IPv4 without options */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, ETH_P_IP);
|
|
mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_IPV4_HEAD | MVPP2_PRS_IPV4_IHL,
|
|
MVPP2_PRS_IPV4_HEAD_MASK |
|
|
MVPP2_PRS_IPV4_IHL_MASK);
|
|
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Skip eth_type + 4 bytes of IP header */
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = false;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP4,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Ethertype: IPv4 with options */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe.index = tid;
|
|
|
|
/* Clear tcam data before updating */
|
|
pe.tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE(MVPP2_ETH_TYPE_LEN)] = 0x0;
|
|
pe.tcam.byte[MVPP2_PRS_TCAM_DATA_BYTE_EN(MVPP2_ETH_TYPE_LEN)] = 0x0;
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_IPV4_HEAD,
|
|
MVPP2_PRS_IPV4_HEAD_MASK);
|
|
|
|
/* Clear ri before updating */
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0;
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0;
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4_OPT,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = false;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP4_OPT,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Ethertype: IPv6 without options */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, ETH_P_IPV6);
|
|
|
|
/* Skip DIP of IPV6 header */
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 8 +
|
|
MVPP2_MAX_L3_ADDR_SIZE,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = false;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP6,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Default entry for MVPP2_PRS_LU_L2 - Unknown ethtype */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
pe.index = MVPP2_PE_ETH_TYPE_UN;
|
|
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Generate flow in the next iteration*/
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Set L3 offset even it's unknown L3 */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
|
|
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
|
|
priv->prs_shadow[pe.index].finish = true;
|
|
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_UN,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Configure vlan entries and detect up to 2 successive VLAN tags.
|
|
* Possible options:
|
|
* 0x8100, 0x88A8
|
|
* 0x8100, 0x8100
|
|
* 0x8100
|
|
* 0x88A8
|
|
*/
|
|
static int mvpp2_prs_vlan_init(struct platform_device *pdev, struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int err;
|
|
|
|
priv->prs_double_vlans = devm_kcalloc(&pdev->dev, sizeof(bool),
|
|
MVPP2_PRS_DBL_VLANS_MAX,
|
|
GFP_KERNEL);
|
|
if (!priv->prs_double_vlans)
|
|
return -ENOMEM;
|
|
|
|
/* Double VLAN: 0x8100, 0x88A8 */
|
|
err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021Q, ETH_P_8021AD,
|
|
MVPP2_PRS_PORT_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Double VLAN: 0x8100, 0x8100 */
|
|
err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021Q, ETH_P_8021Q,
|
|
MVPP2_PRS_PORT_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Single VLAN: 0x88a8 */
|
|
err = mvpp2_prs_vlan_add(priv, ETH_P_8021AD, MVPP2_PRS_SINGLE_VLAN_AI,
|
|
MVPP2_PRS_PORT_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Single VLAN: 0x8100 */
|
|
err = mvpp2_prs_vlan_add(priv, ETH_P_8021Q, MVPP2_PRS_SINGLE_VLAN_AI,
|
|
MVPP2_PRS_PORT_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Set default double vlan entry */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
|
|
pe.index = MVPP2_PE_VLAN_DBL;
|
|
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
/* Clear ai for next iterations */
|
|
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_DOUBLE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_DBL_VLAN_AI_BIT,
|
|
MVPP2_PRS_DBL_VLAN_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Set default vlan none entry */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
|
|
pe.index = MVPP2_PE_VLAN_NONE;
|
|
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
|
|
MVPP2_PRS_RI_VLAN_MASK);
|
|
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Set entries for PPPoE ethertype */
|
|
static int mvpp2_prs_pppoe_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid;
|
|
|
|
/* IPv4 over PPPoE with options */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, PPP_IP);
|
|
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4_OPT,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Skip eth_type + 4 bytes of IP header */
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* IPv4 over PPPoE without options */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_IPV4_HEAD | MVPP2_PRS_IPV4_IHL,
|
|
MVPP2_PRS_IPV4_HEAD_MASK |
|
|
MVPP2_PRS_IPV4_IHL_MASK);
|
|
|
|
/* Clear ri before updating */
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_WORD] = 0x0;
|
|
pe.sram.word[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0;
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* IPv6 over PPPoE */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_match_etype(&pe, 0, PPP_IPV6);
|
|
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
/* Skip eth_type + 4 bytes of IPv6 header */
|
|
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Set L3 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Non-IP over PPPoE */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
|
|
pe.index = tid;
|
|
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK);
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
/* Set L3 offset even if it's unknown L3 */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
|
|
MVPP2_ETH_TYPE_LEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Initialize entries for IPv4 */
|
|
static int mvpp2_prs_ip4_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int err;
|
|
|
|
/* Set entries for TCP, UDP and IGMP over IPv4 */
|
|
err = mvpp2_prs_ip4_proto(priv, IPPROTO_TCP, MVPP2_PRS_RI_L4_TCP,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip4_proto(priv, IPPROTO_UDP, MVPP2_PRS_RI_L4_UDP,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip4_proto(priv, IPPROTO_IGMP,
|
|
MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
|
|
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
|
|
MVPP2_PRS_RI_CPU_CODE_MASK |
|
|
MVPP2_PRS_RI_UDF3_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* IPv4 Broadcast */
|
|
err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_BROAD_CAST);
|
|
if (err)
|
|
return err;
|
|
|
|
/* IPv4 Multicast */
|
|
err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_MULTI_CAST);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Default IPv4 entry for unknown protocols */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
pe.index = MVPP2_PE_IP4_PROTO_UN;
|
|
|
|
/* Set next lu to IPv4 */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_sram_shift_set(&pe, 12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
/* Set L4 offset */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
|
|
sizeof(struct iphdr) - 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
|
|
MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Default IPv4 entry for unicast address */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
|
|
pe.index = MVPP2_PE_IP4_ADDR_UN;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST,
|
|
MVPP2_PRS_RI_L3_ADDR_MASK);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
|
|
MVPP2_PRS_IPV4_DIP_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Initialize entries for IPv6 */
|
|
static int mvpp2_prs_ip6_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int tid, err;
|
|
|
|
/* Set entries for TCP, UDP and ICMP over IPv6 */
|
|
err = mvpp2_prs_ip6_proto(priv, IPPROTO_TCP,
|
|
MVPP2_PRS_RI_L4_TCP,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip6_proto(priv, IPPROTO_UDP,
|
|
MVPP2_PRS_RI_L4_UDP,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip6_proto(priv, IPPROTO_ICMPV6,
|
|
MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
|
|
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
|
|
MVPP2_PRS_RI_CPU_CODE_MASK |
|
|
MVPP2_PRS_RI_UDF3_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* IPv4 is the last header. This is similar case as 6-TCP or 17-UDP */
|
|
/* Result Info: UDF7=1, DS lite */
|
|
err = mvpp2_prs_ip6_proto(priv, IPPROTO_IPIP,
|
|
MVPP2_PRS_RI_UDF7_IP6_LITE,
|
|
MVPP2_PRS_RI_UDF7_MASK);
|
|
if (err)
|
|
return err;
|
|
|
|
/* IPv6 multicast */
|
|
err = mvpp2_prs_ip6_cast(priv, MVPP2_PRS_L3_MULTI_CAST);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Entry for checking hop limit */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
MVPP2_PE_LAST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = tid;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN |
|
|
MVPP2_PRS_RI_DROP_MASK,
|
|
MVPP2_PRS_RI_L3_PROTO_MASK |
|
|
MVPP2_PRS_RI_DROP_MASK);
|
|
|
|
mvpp2_prs_tcam_data_byte_set(&pe, 1, 0x00, MVPP2_PRS_IPV6_HOP_MASK);
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Default IPv6 entry for unknown protocols */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = MVPP2_PE_IP6_PROTO_UN;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
/* Set L4 offset relatively to our current place */
|
|
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
|
|
sizeof(struct ipv6hdr) - 4,
|
|
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Default IPv6 entry for unknown ext protocols */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = MVPP2_PE_IP6_EXT_PROTO_UN;
|
|
|
|
/* Finished: go to flowid generation */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
|
|
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
|
|
MVPP2_PRS_RI_L4_PROTO_MASK);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_EXT_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
/* Default IPv6 entry for unicast address */
|
|
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
|
|
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
pe.index = MVPP2_PE_IP6_ADDR_UN;
|
|
|
|
/* Finished: go to IPv6 again */
|
|
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST,
|
|
MVPP2_PRS_RI_L3_ADDR_MASK);
|
|
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
|
|
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Shift back to IPV6 NH */
|
|
mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
|
|
/* Unmask all ports */
|
|
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
|
|
|
|
/* Update shadow table and hw entry */
|
|
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
|
|
mvpp2_prs_hw_write(priv, &pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Parser default initialization */
|
|
static int mvpp2_prs_default_init(struct platform_device *pdev,
|
|
struct mvpp2 *priv)
|
|
{
|
|
int err, index, i;
|
|
|
|
/* Enable tcam table */
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_CTRL_REG, MVPP2_PRS_TCAM_EN_MASK);
|
|
|
|
/* Clear all tcam and sram entries */
|
|
for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++) {
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index);
|
|
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
|
|
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), 0);
|
|
|
|
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, index);
|
|
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
|
|
mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), 0);
|
|
}
|
|
|
|
/* Invalidate all tcam entries */
|
|
for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++)
|
|
mvpp2_prs_hw_inv(priv, index);
|
|
|
|
priv->prs_shadow = devm_kcalloc(&pdev->dev, MVPP2_PRS_TCAM_SRAM_SIZE,
|
|
sizeof(struct mvpp2_prs_shadow),
|
|
GFP_KERNEL);
|
|
if (!priv->prs_shadow)
|
|
return -ENOMEM;
|
|
|
|
/* Always start from lookup = 0 */
|
|
for (index = 0; index < MVPP2_MAX_PORTS; index++)
|
|
mvpp2_prs_hw_port_init(priv, index, MVPP2_PRS_LU_MH,
|
|
MVPP2_PRS_PORT_LU_MAX, 0);
|
|
|
|
mvpp2_prs_def_flow_init(priv);
|
|
|
|
mvpp2_prs_mh_init(priv);
|
|
|
|
mvpp2_prs_mac_init(priv);
|
|
|
|
mvpp2_prs_dsa_init(priv);
|
|
|
|
err = mvpp2_prs_etype_init(priv);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_vlan_init(pdev, priv);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_pppoe_init(priv);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip6_init(priv);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mvpp2_prs_ip4_init(priv);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Compare MAC DA with tcam entry data */
|
|
static bool mvpp2_prs_mac_range_equals(struct mvpp2_prs_entry *pe,
|
|
const u8 *da, unsigned char *mask)
|
|
{
|
|
unsigned char tcam_byte, tcam_mask;
|
|
int index;
|
|
|
|
for (index = 0; index < ETH_ALEN; index++) {
|
|
mvpp2_prs_tcam_data_byte_get(pe, index, &tcam_byte, &tcam_mask);
|
|
if (tcam_mask != mask[index])
|
|
return false;
|
|
|
|
if ((tcam_mask & tcam_byte) != (da[index] & mask[index]))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Find tcam entry with matched pair <MAC DA, port> */
|
|
static struct mvpp2_prs_entry *
|
|
mvpp2_prs_mac_da_range_find(struct mvpp2 *priv, int pmap, const u8 *da,
|
|
unsigned char *mask, int udf_type)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return NULL;
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_MAC);
|
|
|
|
/* Go through the all entires with MVPP2_PRS_LU_MAC */
|
|
for (tid = MVPP2_PE_FIRST_FREE_TID;
|
|
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
|
|
unsigned int entry_pmap;
|
|
|
|
if (!priv->prs_shadow[tid].valid ||
|
|
(priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) ||
|
|
(priv->prs_shadow[tid].udf != udf_type))
|
|
continue;
|
|
|
|
pe->index = tid;
|
|
mvpp2_prs_hw_read(priv, pe);
|
|
entry_pmap = mvpp2_prs_tcam_port_map_get(pe);
|
|
|
|
if (mvpp2_prs_mac_range_equals(pe, da, mask) &&
|
|
entry_pmap == pmap)
|
|
return pe;
|
|
}
|
|
kfree(pe);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Update parser's mac da entry */
|
|
static int mvpp2_prs_mac_da_accept(struct mvpp2 *priv, int port,
|
|
const u8 *da, bool add)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
unsigned int pmap, len, ri;
|
|
unsigned char mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
|
int tid;
|
|
|
|
/* Scan TCAM and see if entry with this <MAC DA, port> already exist */
|
|
pe = mvpp2_prs_mac_da_range_find(priv, (1 << port), da, mask,
|
|
MVPP2_PRS_UDF_MAC_DEF);
|
|
|
|
/* No such entry */
|
|
if (!pe) {
|
|
if (!add)
|
|
return 0;
|
|
|
|
/* Create new TCAM entry */
|
|
/* Find first range mac entry*/
|
|
for (tid = MVPP2_PE_FIRST_FREE_TID;
|
|
tid <= MVPP2_PE_LAST_FREE_TID; tid++)
|
|
if (priv->prs_shadow[tid].valid &&
|
|
(priv->prs_shadow[tid].lu == MVPP2_PRS_LU_MAC) &&
|
|
(priv->prs_shadow[tid].udf ==
|
|
MVPP2_PRS_UDF_MAC_RANGE))
|
|
break;
|
|
|
|
/* Go through the all entries from first to last */
|
|
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
|
|
tid - 1);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return -1;
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_MAC);
|
|
pe->index = tid;
|
|
|
|
/* Mask all ports */
|
|
mvpp2_prs_tcam_port_map_set(pe, 0);
|
|
}
|
|
|
|
/* Update port mask */
|
|
mvpp2_prs_tcam_port_set(pe, port, add);
|
|
|
|
/* Invalidate the entry if no ports are left enabled */
|
|
pmap = mvpp2_prs_tcam_port_map_get(pe);
|
|
if (pmap == 0) {
|
|
if (add) {
|
|
kfree(pe);
|
|
return -1;
|
|
}
|
|
mvpp2_prs_hw_inv(priv, pe->index);
|
|
priv->prs_shadow[pe->index].valid = false;
|
|
kfree(pe);
|
|
return 0;
|
|
}
|
|
|
|
/* Continue - set next lookup */
|
|
mvpp2_prs_sram_next_lu_set(pe, MVPP2_PRS_LU_DSA);
|
|
|
|
/* Set match on DA */
|
|
len = ETH_ALEN;
|
|
while (len--)
|
|
mvpp2_prs_tcam_data_byte_set(pe, len, da[len], 0xff);
|
|
|
|
/* Set result info bits */
|
|
if (is_broadcast_ether_addr(da))
|
|
ri = MVPP2_PRS_RI_L2_BCAST;
|
|
else if (is_multicast_ether_addr(da))
|
|
ri = MVPP2_PRS_RI_L2_MCAST;
|
|
else
|
|
ri = MVPP2_PRS_RI_L2_UCAST | MVPP2_PRS_RI_MAC_ME_MASK;
|
|
|
|
mvpp2_prs_sram_ri_update(pe, ri, MVPP2_PRS_RI_L2_CAST_MASK |
|
|
MVPP2_PRS_RI_MAC_ME_MASK);
|
|
mvpp2_prs_shadow_ri_set(priv, pe->index, ri, MVPP2_PRS_RI_L2_CAST_MASK |
|
|
MVPP2_PRS_RI_MAC_ME_MASK);
|
|
|
|
/* Shift to ethertype */
|
|
mvpp2_prs_sram_shift_set(pe, 2 * ETH_ALEN,
|
|
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
|
|
|
|
/* Update shadow table and hw entry */
|
|
priv->prs_shadow[pe->index].udf = MVPP2_PRS_UDF_MAC_DEF;
|
|
mvpp2_prs_shadow_set(priv, pe->index, MVPP2_PRS_LU_MAC);
|
|
mvpp2_prs_hw_write(priv, pe);
|
|
|
|
kfree(pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mvpp2_prs_update_mac_da(struct net_device *dev, const u8 *da)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
int err;
|
|
|
|
/* Remove old parser entry */
|
|
err = mvpp2_prs_mac_da_accept(port->priv, port->id, dev->dev_addr,
|
|
false);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Add new parser entry */
|
|
err = mvpp2_prs_mac_da_accept(port->priv, port->id, da, true);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Set addr in the device */
|
|
ether_addr_copy(dev->dev_addr, da);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Delete all port's multicast simple (not range) entries */
|
|
static void mvpp2_prs_mcast_del_all(struct mvpp2 *priv, int port)
|
|
{
|
|
struct mvpp2_prs_entry pe;
|
|
int index, tid;
|
|
|
|
for (tid = MVPP2_PE_FIRST_FREE_TID;
|
|
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
|
|
unsigned char da[ETH_ALEN], da_mask[ETH_ALEN];
|
|
|
|
if (!priv->prs_shadow[tid].valid ||
|
|
(priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) ||
|
|
(priv->prs_shadow[tid].udf != MVPP2_PRS_UDF_MAC_DEF))
|
|
continue;
|
|
|
|
/* Only simple mac entries */
|
|
pe.index = tid;
|
|
mvpp2_prs_hw_read(priv, &pe);
|
|
|
|
/* Read mac addr from entry */
|
|
for (index = 0; index < ETH_ALEN; index++)
|
|
mvpp2_prs_tcam_data_byte_get(&pe, index, &da[index],
|
|
&da_mask[index]);
|
|
|
|
if (is_multicast_ether_addr(da) && !is_broadcast_ether_addr(da))
|
|
/* Delete this entry */
|
|
mvpp2_prs_mac_da_accept(priv, port, da, false);
|
|
}
|
|
}
|
|
|
|
static int mvpp2_prs_tag_mode_set(struct mvpp2 *priv, int port, int type)
|
|
{
|
|
switch (type) {
|
|
case MVPP2_TAG_TYPE_EDSA:
|
|
/* Add port to EDSA entries */
|
|
mvpp2_prs_dsa_tag_set(priv, port, true,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, true,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
|
|
/* Remove port from DSA entries */
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
|
|
break;
|
|
|
|
case MVPP2_TAG_TYPE_DSA:
|
|
/* Add port to DSA entries */
|
|
mvpp2_prs_dsa_tag_set(priv, port, true,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, true,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
|
|
/* Remove port from EDSA entries */
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
|
|
break;
|
|
|
|
case MVPP2_TAG_TYPE_MH:
|
|
case MVPP2_TAG_TYPE_NONE:
|
|
/* Remove port form EDSA and DSA entries */
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
|
|
mvpp2_prs_dsa_tag_set(priv, port, false,
|
|
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
|
|
break;
|
|
|
|
default:
|
|
if ((type < 0) || (type > MVPP2_TAG_TYPE_EDSA))
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Set prs flow for the port */
|
|
static int mvpp2_prs_def_flow(struct mvpp2_port *port)
|
|
{
|
|
struct mvpp2_prs_entry *pe;
|
|
int tid;
|
|
|
|
pe = mvpp2_prs_flow_find(port->priv, port->id);
|
|
|
|
/* Such entry not exist */
|
|
if (!pe) {
|
|
/* Go through the all entires from last to first */
|
|
tid = mvpp2_prs_tcam_first_free(port->priv,
|
|
MVPP2_PE_LAST_FREE_TID,
|
|
MVPP2_PE_FIRST_FREE_TID);
|
|
if (tid < 0)
|
|
return tid;
|
|
|
|
pe = kzalloc(sizeof(*pe), GFP_KERNEL);
|
|
if (!pe)
|
|
return -ENOMEM;
|
|
|
|
mvpp2_prs_tcam_lu_set(pe, MVPP2_PRS_LU_FLOWS);
|
|
pe->index = tid;
|
|
|
|
/* Set flow ID*/
|
|
mvpp2_prs_sram_ai_update(pe, port->id, MVPP2_PRS_FLOW_ID_MASK);
|
|
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1);
|
|
|
|
/* Update shadow table */
|
|
mvpp2_prs_shadow_set(port->priv, pe->index, MVPP2_PRS_LU_FLOWS);
|
|
}
|
|
|
|
mvpp2_prs_tcam_port_map_set(pe, (1 << port->id));
|
|
mvpp2_prs_hw_write(port->priv, pe);
|
|
kfree(pe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Classifier configuration routines */
|
|
|
|
/* Update classification flow table registers */
|
|
static void mvpp2_cls_flow_write(struct mvpp2 *priv,
|
|
struct mvpp2_cls_flow_entry *fe)
|
|
{
|
|
mvpp2_write(priv, MVPP2_CLS_FLOW_INDEX_REG, fe->index);
|
|
mvpp2_write(priv, MVPP2_CLS_FLOW_TBL0_REG, fe->data[0]);
|
|
mvpp2_write(priv, MVPP2_CLS_FLOW_TBL1_REG, fe->data[1]);
|
|
mvpp2_write(priv, MVPP2_CLS_FLOW_TBL2_REG, fe->data[2]);
|
|
}
|
|
|
|
/* Update classification lookup table register */
|
|
static void mvpp2_cls_lookup_write(struct mvpp2 *priv,
|
|
struct mvpp2_cls_lookup_entry *le)
|
|
{
|
|
u32 val;
|
|
|
|
val = (le->way << MVPP2_CLS_LKP_INDEX_WAY_OFFS) | le->lkpid;
|
|
mvpp2_write(priv, MVPP2_CLS_LKP_INDEX_REG, val);
|
|
mvpp2_write(priv, MVPP2_CLS_LKP_TBL_REG, le->data);
|
|
}
|
|
|
|
/* Classifier default initialization */
|
|
static void mvpp2_cls_init(struct mvpp2 *priv)
|
|
{
|
|
struct mvpp2_cls_lookup_entry le;
|
|
struct mvpp2_cls_flow_entry fe;
|
|
int index;
|
|
|
|
/* Enable classifier */
|
|
mvpp2_write(priv, MVPP2_CLS_MODE_REG, MVPP2_CLS_MODE_ACTIVE_MASK);
|
|
|
|
/* Clear classifier flow table */
|
|
memset(&fe.data, 0, MVPP2_CLS_FLOWS_TBL_DATA_WORDS);
|
|
for (index = 0; index < MVPP2_CLS_FLOWS_TBL_SIZE; index++) {
|
|
fe.index = index;
|
|
mvpp2_cls_flow_write(priv, &fe);
|
|
}
|
|
|
|
/* Clear classifier lookup table */
|
|
le.data = 0;
|
|
for (index = 0; index < MVPP2_CLS_LKP_TBL_SIZE; index++) {
|
|
le.lkpid = index;
|
|
le.way = 0;
|
|
mvpp2_cls_lookup_write(priv, &le);
|
|
|
|
le.way = 1;
|
|
mvpp2_cls_lookup_write(priv, &le);
|
|
}
|
|
}
|
|
|
|
static void mvpp2_cls_port_config(struct mvpp2_port *port)
|
|
{
|
|
struct mvpp2_cls_lookup_entry le;
|
|
u32 val;
|
|
|
|
/* Set way for the port */
|
|
val = mvpp2_read(port->priv, MVPP2_CLS_PORT_WAY_REG);
|
|
val &= ~MVPP2_CLS_PORT_WAY_MASK(port->id);
|
|
mvpp2_write(port->priv, MVPP2_CLS_PORT_WAY_REG, val);
|
|
|
|
/* Pick the entry to be accessed in lookup ID decoding table
|
|
* according to the way and lkpid.
|
|
*/
|
|
le.lkpid = port->id;
|
|
le.way = 0;
|
|
le.data = 0;
|
|
|
|
/* Set initial CPU queue for receiving packets */
|
|
le.data &= ~MVPP2_CLS_LKP_TBL_RXQ_MASK;
|
|
le.data |= port->first_rxq;
|
|
|
|
/* Disable classification engines */
|
|
le.data &= ~MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK;
|
|
|
|
/* Update lookup ID table entry */
|
|
mvpp2_cls_lookup_write(port->priv, &le);
|
|
}
|
|
|
|
/* Set CPU queue number for oversize packets */
|
|
static void mvpp2_cls_oversize_rxq_set(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
mvpp2_write(port->priv, MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port->id),
|
|
port->first_rxq & MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK);
|
|
|
|
mvpp2_write(port->priv, MVPP2_CLS_SWFWD_P2HQ_REG(port->id),
|
|
(port->first_rxq >> MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS));
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG);
|
|
val |= MVPP2_CLS_SWFWD_PCTRL_MASK(port->id);
|
|
mvpp2_write(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG, val);
|
|
}
|
|
|
|
/* Buffer Manager configuration routines */
|
|
|
|
/* Create pool */
|
|
static int mvpp2_bm_pool_create(struct platform_device *pdev,
|
|
struct mvpp2 *priv,
|
|
struct mvpp2_bm_pool *bm_pool, int size)
|
|
{
|
|
int size_bytes;
|
|
u32 val;
|
|
|
|
size_bytes = sizeof(u32) * size;
|
|
bm_pool->virt_addr = dma_alloc_coherent(&pdev->dev, size_bytes,
|
|
&bm_pool->phys_addr,
|
|
GFP_KERNEL);
|
|
if (!bm_pool->virt_addr)
|
|
return -ENOMEM;
|
|
|
|
if (!IS_ALIGNED((u32)bm_pool->virt_addr, MVPP2_BM_POOL_PTR_ALIGN)) {
|
|
dma_free_coherent(&pdev->dev, size_bytes, bm_pool->virt_addr,
|
|
bm_pool->phys_addr);
|
|
dev_err(&pdev->dev, "BM pool %d is not %d bytes aligned\n",
|
|
bm_pool->id, MVPP2_BM_POOL_PTR_ALIGN);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
mvpp2_write(priv, MVPP2_BM_POOL_BASE_REG(bm_pool->id),
|
|
bm_pool->phys_addr);
|
|
mvpp2_write(priv, MVPP2_BM_POOL_SIZE_REG(bm_pool->id), size);
|
|
|
|
val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id));
|
|
val |= MVPP2_BM_START_MASK;
|
|
mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val);
|
|
|
|
bm_pool->type = MVPP2_BM_FREE;
|
|
bm_pool->size = size;
|
|
bm_pool->pkt_size = 0;
|
|
bm_pool->buf_num = 0;
|
|
atomic_set(&bm_pool->in_use, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Set pool buffer size */
|
|
static void mvpp2_bm_pool_bufsize_set(struct mvpp2 *priv,
|
|
struct mvpp2_bm_pool *bm_pool,
|
|
int buf_size)
|
|
{
|
|
u32 val;
|
|
|
|
bm_pool->buf_size = buf_size;
|
|
|
|
val = ALIGN(buf_size, 1 << MVPP2_POOL_BUF_SIZE_OFFSET);
|
|
mvpp2_write(priv, MVPP2_POOL_BUF_SIZE_REG(bm_pool->id), val);
|
|
}
|
|
|
|
/* Free all buffers from the pool */
|
|
static void mvpp2_bm_bufs_free(struct device *dev, struct mvpp2 *priv,
|
|
struct mvpp2_bm_pool *bm_pool)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < bm_pool->buf_num; i++) {
|
|
dma_addr_t buf_phys_addr;
|
|
u32 vaddr;
|
|
|
|
/* Get buffer virtual address (indirect access) */
|
|
buf_phys_addr = mvpp2_read(priv,
|
|
MVPP2_BM_PHY_ALLOC_REG(bm_pool->id));
|
|
vaddr = mvpp2_read(priv, MVPP2_BM_VIRT_ALLOC_REG);
|
|
|
|
dma_unmap_single(dev, buf_phys_addr,
|
|
bm_pool->buf_size, DMA_FROM_DEVICE);
|
|
|
|
if (!vaddr)
|
|
break;
|
|
dev_kfree_skb_any((struct sk_buff *)vaddr);
|
|
}
|
|
|
|
/* Update BM driver with number of buffers removed from pool */
|
|
bm_pool->buf_num -= i;
|
|
}
|
|
|
|
/* Cleanup pool */
|
|
static int mvpp2_bm_pool_destroy(struct platform_device *pdev,
|
|
struct mvpp2 *priv,
|
|
struct mvpp2_bm_pool *bm_pool)
|
|
{
|
|
u32 val;
|
|
|
|
mvpp2_bm_bufs_free(&pdev->dev, priv, bm_pool);
|
|
if (bm_pool->buf_num) {
|
|
WARN(1, "cannot free all buffers in pool %d\n", bm_pool->id);
|
|
return 0;
|
|
}
|
|
|
|
val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id));
|
|
val |= MVPP2_BM_STOP_MASK;
|
|
mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val);
|
|
|
|
dma_free_coherent(&pdev->dev, sizeof(u32) * bm_pool->size,
|
|
bm_pool->virt_addr,
|
|
bm_pool->phys_addr);
|
|
return 0;
|
|
}
|
|
|
|
static int mvpp2_bm_pools_init(struct platform_device *pdev,
|
|
struct mvpp2 *priv)
|
|
{
|
|
int i, err, size;
|
|
struct mvpp2_bm_pool *bm_pool;
|
|
|
|
/* Create all pools with maximum size */
|
|
size = MVPP2_BM_POOL_SIZE_MAX;
|
|
for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) {
|
|
bm_pool = &priv->bm_pools[i];
|
|
bm_pool->id = i;
|
|
err = mvpp2_bm_pool_create(pdev, priv, bm_pool, size);
|
|
if (err)
|
|
goto err_unroll_pools;
|
|
mvpp2_bm_pool_bufsize_set(priv, bm_pool, 0);
|
|
}
|
|
return 0;
|
|
|
|
err_unroll_pools:
|
|
dev_err(&pdev->dev, "failed to create BM pool %d, size %d\n", i, size);
|
|
for (i = i - 1; i >= 0; i--)
|
|
mvpp2_bm_pool_destroy(pdev, priv, &priv->bm_pools[i]);
|
|
return err;
|
|
}
|
|
|
|
static int mvpp2_bm_init(struct platform_device *pdev, struct mvpp2 *priv)
|
|
{
|
|
int i, err;
|
|
|
|
for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) {
|
|
/* Mask BM all interrupts */
|
|
mvpp2_write(priv, MVPP2_BM_INTR_MASK_REG(i), 0);
|
|
/* Clear BM cause register */
|
|
mvpp2_write(priv, MVPP2_BM_INTR_CAUSE_REG(i), 0);
|
|
}
|
|
|
|
/* Allocate and initialize BM pools */
|
|
priv->bm_pools = devm_kcalloc(&pdev->dev, MVPP2_BM_POOLS_NUM,
|
|
sizeof(struct mvpp2_bm_pool), GFP_KERNEL);
|
|
if (!priv->bm_pools)
|
|
return -ENOMEM;
|
|
|
|
err = mvpp2_bm_pools_init(pdev, priv);
|
|
if (err < 0)
|
|
return err;
|
|
return 0;
|
|
}
|
|
|
|
/* Attach long pool to rxq */
|
|
static void mvpp2_rxq_long_pool_set(struct mvpp2_port *port,
|
|
int lrxq, int long_pool)
|
|
{
|
|
u32 val;
|
|
int prxq;
|
|
|
|
/* Get queue physical ID */
|
|
prxq = port->rxqs[lrxq]->id;
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq));
|
|
val &= ~MVPP2_RXQ_POOL_LONG_MASK;
|
|
val |= ((long_pool << MVPP2_RXQ_POOL_LONG_OFFS) &
|
|
MVPP2_RXQ_POOL_LONG_MASK);
|
|
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val);
|
|
}
|
|
|
|
/* Attach short pool to rxq */
|
|
static void mvpp2_rxq_short_pool_set(struct mvpp2_port *port,
|
|
int lrxq, int short_pool)
|
|
{
|
|
u32 val;
|
|
int prxq;
|
|
|
|
/* Get queue physical ID */
|
|
prxq = port->rxqs[lrxq]->id;
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq));
|
|
val &= ~MVPP2_RXQ_POOL_SHORT_MASK;
|
|
val |= ((short_pool << MVPP2_RXQ_POOL_SHORT_OFFS) &
|
|
MVPP2_RXQ_POOL_SHORT_MASK);
|
|
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val);
|
|
}
|
|
|
|
/* Allocate skb for BM pool */
|
|
static struct sk_buff *mvpp2_skb_alloc(struct mvpp2_port *port,
|
|
struct mvpp2_bm_pool *bm_pool,
|
|
dma_addr_t *buf_phys_addr,
|
|
gfp_t gfp_mask)
|
|
{
|
|
struct sk_buff *skb;
|
|
dma_addr_t phys_addr;
|
|
|
|
skb = __dev_alloc_skb(bm_pool->pkt_size, gfp_mask);
|
|
if (!skb)
|
|
return NULL;
|
|
|
|
phys_addr = dma_map_single(port->dev->dev.parent, skb->head,
|
|
MVPP2_RX_BUF_SIZE(bm_pool->pkt_size),
|
|
DMA_FROM_DEVICE);
|
|
if (unlikely(dma_mapping_error(port->dev->dev.parent, phys_addr))) {
|
|
dev_kfree_skb_any(skb);
|
|
return NULL;
|
|
}
|
|
*buf_phys_addr = phys_addr;
|
|
|
|
return skb;
|
|
}
|
|
|
|
/* Set pool number in a BM cookie */
|
|
static inline u32 mvpp2_bm_cookie_pool_set(u32 cookie, int pool)
|
|
{
|
|
u32 bm;
|
|
|
|
bm = cookie & ~(0xFF << MVPP2_BM_COOKIE_POOL_OFFS);
|
|
bm |= ((pool & 0xFF) << MVPP2_BM_COOKIE_POOL_OFFS);
|
|
|
|
return bm;
|
|
}
|
|
|
|
/* Get pool number from a BM cookie */
|
|
static inline int mvpp2_bm_cookie_pool_get(u32 cookie)
|
|
{
|
|
return (cookie >> MVPP2_BM_COOKIE_POOL_OFFS) & 0xFF;
|
|
}
|
|
|
|
/* Release buffer to BM */
|
|
static inline void mvpp2_bm_pool_put(struct mvpp2_port *port, int pool,
|
|
u32 buf_phys_addr, u32 buf_virt_addr)
|
|
{
|
|
mvpp2_write(port->priv, MVPP2_BM_VIRT_RLS_REG, buf_virt_addr);
|
|
mvpp2_write(port->priv, MVPP2_BM_PHY_RLS_REG(pool), buf_phys_addr);
|
|
}
|
|
|
|
/* Release multicast buffer */
|
|
static void mvpp2_bm_pool_mc_put(struct mvpp2_port *port, int pool,
|
|
u32 buf_phys_addr, u32 buf_virt_addr,
|
|
int mc_id)
|
|
{
|
|
u32 val = 0;
|
|
|
|
val |= (mc_id & MVPP2_BM_MC_ID_MASK);
|
|
mvpp2_write(port->priv, MVPP2_BM_MC_RLS_REG, val);
|
|
|
|
mvpp2_bm_pool_put(port, pool,
|
|
buf_phys_addr | MVPP2_BM_PHY_RLS_MC_BUFF_MASK,
|
|
buf_virt_addr);
|
|
}
|
|
|
|
/* Refill BM pool */
|
|
static void mvpp2_pool_refill(struct mvpp2_port *port, u32 bm,
|
|
u32 phys_addr, u32 cookie)
|
|
{
|
|
int pool = mvpp2_bm_cookie_pool_get(bm);
|
|
|
|
mvpp2_bm_pool_put(port, pool, phys_addr, cookie);
|
|
}
|
|
|
|
/* Allocate buffers for the pool */
|
|
static int mvpp2_bm_bufs_add(struct mvpp2_port *port,
|
|
struct mvpp2_bm_pool *bm_pool, int buf_num)
|
|
{
|
|
struct sk_buff *skb;
|
|
int i, buf_size, total_size;
|
|
u32 bm;
|
|
dma_addr_t phys_addr;
|
|
|
|
buf_size = MVPP2_RX_BUF_SIZE(bm_pool->pkt_size);
|
|
total_size = MVPP2_RX_TOTAL_SIZE(buf_size);
|
|
|
|
if (buf_num < 0 ||
|
|
(buf_num + bm_pool->buf_num > bm_pool->size)) {
|
|
netdev_err(port->dev,
|
|
"cannot allocate %d buffers for pool %d\n",
|
|
buf_num, bm_pool->id);
|
|
return 0;
|
|
}
|
|
|
|
bm = mvpp2_bm_cookie_pool_set(0, bm_pool->id);
|
|
for (i = 0; i < buf_num; i++) {
|
|
skb = mvpp2_skb_alloc(port, bm_pool, &phys_addr, GFP_KERNEL);
|
|
if (!skb)
|
|
break;
|
|
|
|
mvpp2_pool_refill(port, bm, (u32)phys_addr, (u32)skb);
|
|
}
|
|
|
|
/* Update BM driver with number of buffers added to pool */
|
|
bm_pool->buf_num += i;
|
|
bm_pool->in_use_thresh = bm_pool->buf_num / 4;
|
|
|
|
netdev_dbg(port->dev,
|
|
"%s pool %d: pkt_size=%4d, buf_size=%4d, total_size=%4d\n",
|
|
bm_pool->type == MVPP2_BM_SWF_SHORT ? "short" : " long",
|
|
bm_pool->id, bm_pool->pkt_size, buf_size, total_size);
|
|
|
|
netdev_dbg(port->dev,
|
|
"%s pool %d: %d of %d buffers added\n",
|
|
bm_pool->type == MVPP2_BM_SWF_SHORT ? "short" : " long",
|
|
bm_pool->id, i, buf_num);
|
|
return i;
|
|
}
|
|
|
|
/* Notify the driver that BM pool is being used as specific type and return the
|
|
* pool pointer on success
|
|
*/
|
|
static struct mvpp2_bm_pool *
|
|
mvpp2_bm_pool_use(struct mvpp2_port *port, int pool, enum mvpp2_bm_type type,
|
|
int pkt_size)
|
|
{
|
|
struct mvpp2_bm_pool *new_pool = &port->priv->bm_pools[pool];
|
|
int num;
|
|
|
|
if (new_pool->type != MVPP2_BM_FREE && new_pool->type != type) {
|
|
netdev_err(port->dev, "mixing pool types is forbidden\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (new_pool->type == MVPP2_BM_FREE)
|
|
new_pool->type = type;
|
|
|
|
/* Allocate buffers in case BM pool is used as long pool, but packet
|
|
* size doesn't match MTU or BM pool hasn't being used yet
|
|
*/
|
|
if (((type == MVPP2_BM_SWF_LONG) && (pkt_size > new_pool->pkt_size)) ||
|
|
(new_pool->pkt_size == 0)) {
|
|
int pkts_num;
|
|
|
|
/* Set default buffer number or free all the buffers in case
|
|
* the pool is not empty
|
|
*/
|
|
pkts_num = new_pool->buf_num;
|
|
if (pkts_num == 0)
|
|
pkts_num = type == MVPP2_BM_SWF_LONG ?
|
|
MVPP2_BM_LONG_BUF_NUM :
|
|
MVPP2_BM_SHORT_BUF_NUM;
|
|
else
|
|
mvpp2_bm_bufs_free(port->dev->dev.parent,
|
|
port->priv, new_pool);
|
|
|
|
new_pool->pkt_size = pkt_size;
|
|
|
|
/* Allocate buffers for this pool */
|
|
num = mvpp2_bm_bufs_add(port, new_pool, pkts_num);
|
|
if (num != pkts_num) {
|
|
WARN(1, "pool %d: %d of %d allocated\n",
|
|
new_pool->id, num, pkts_num);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
mvpp2_bm_pool_bufsize_set(port->priv, new_pool,
|
|
MVPP2_RX_BUF_SIZE(new_pool->pkt_size));
|
|
|
|
return new_pool;
|
|
}
|
|
|
|
/* Initialize pools for swf */
|
|
static int mvpp2_swf_bm_pool_init(struct mvpp2_port *port)
|
|
{
|
|
int rxq;
|
|
|
|
if (!port->pool_long) {
|
|
port->pool_long =
|
|
mvpp2_bm_pool_use(port, MVPP2_BM_SWF_LONG_POOL(port->id),
|
|
MVPP2_BM_SWF_LONG,
|
|
port->pkt_size);
|
|
if (!port->pool_long)
|
|
return -ENOMEM;
|
|
|
|
port->pool_long->port_map |= (1 << port->id);
|
|
|
|
for (rxq = 0; rxq < rxq_number; rxq++)
|
|
mvpp2_rxq_long_pool_set(port, rxq, port->pool_long->id);
|
|
}
|
|
|
|
if (!port->pool_short) {
|
|
port->pool_short =
|
|
mvpp2_bm_pool_use(port, MVPP2_BM_SWF_SHORT_POOL,
|
|
MVPP2_BM_SWF_SHORT,
|
|
MVPP2_BM_SHORT_PKT_SIZE);
|
|
if (!port->pool_short)
|
|
return -ENOMEM;
|
|
|
|
port->pool_short->port_map |= (1 << port->id);
|
|
|
|
for (rxq = 0; rxq < rxq_number; rxq++)
|
|
mvpp2_rxq_short_pool_set(port, rxq,
|
|
port->pool_short->id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mvpp2_bm_update_mtu(struct net_device *dev, int mtu)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct mvpp2_bm_pool *port_pool = port->pool_long;
|
|
int num, pkts_num = port_pool->buf_num;
|
|
int pkt_size = MVPP2_RX_PKT_SIZE(mtu);
|
|
|
|
/* Update BM pool with new buffer size */
|
|
mvpp2_bm_bufs_free(dev->dev.parent, port->priv, port_pool);
|
|
if (port_pool->buf_num) {
|
|
WARN(1, "cannot free all buffers in pool %d\n", port_pool->id);
|
|
return -EIO;
|
|
}
|
|
|
|
port_pool->pkt_size = pkt_size;
|
|
num = mvpp2_bm_bufs_add(port, port_pool, pkts_num);
|
|
if (num != pkts_num) {
|
|
WARN(1, "pool %d: %d of %d allocated\n",
|
|
port_pool->id, num, pkts_num);
|
|
return -EIO;
|
|
}
|
|
|
|
mvpp2_bm_pool_bufsize_set(port->priv, port_pool,
|
|
MVPP2_RX_BUF_SIZE(port_pool->pkt_size));
|
|
dev->mtu = mtu;
|
|
netdev_update_features(dev);
|
|
return 0;
|
|
}
|
|
|
|
static inline void mvpp2_interrupts_enable(struct mvpp2_port *port)
|
|
{
|
|
int cpu, cpu_mask = 0;
|
|
|
|
for_each_present_cpu(cpu)
|
|
cpu_mask |= 1 << cpu;
|
|
mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id),
|
|
MVPP2_ISR_ENABLE_INTERRUPT(cpu_mask));
|
|
}
|
|
|
|
static inline void mvpp2_interrupts_disable(struct mvpp2_port *port)
|
|
{
|
|
int cpu, cpu_mask = 0;
|
|
|
|
for_each_present_cpu(cpu)
|
|
cpu_mask |= 1 << cpu;
|
|
mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id),
|
|
MVPP2_ISR_DISABLE_INTERRUPT(cpu_mask));
|
|
}
|
|
|
|
/* Mask the current CPU's Rx/Tx interrupts */
|
|
static void mvpp2_interrupts_mask(void *arg)
|
|
{
|
|
struct mvpp2_port *port = arg;
|
|
|
|
mvpp2_write(port->priv, MVPP2_ISR_RX_TX_MASK_REG(port->id), 0);
|
|
}
|
|
|
|
/* Unmask the current CPU's Rx/Tx interrupts */
|
|
static void mvpp2_interrupts_unmask(void *arg)
|
|
{
|
|
struct mvpp2_port *port = arg;
|
|
|
|
mvpp2_write(port->priv, MVPP2_ISR_RX_TX_MASK_REG(port->id),
|
|
(MVPP2_CAUSE_MISC_SUM_MASK |
|
|
MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK));
|
|
}
|
|
|
|
/* Port configuration routines */
|
|
|
|
static void mvpp2_port_mii_set(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_2_REG);
|
|
|
|
switch (port->phy_interface) {
|
|
case PHY_INTERFACE_MODE_SGMII:
|
|
val |= MVPP2_GMAC_INBAND_AN_MASK;
|
|
break;
|
|
case PHY_INTERFACE_MODE_RGMII:
|
|
val |= MVPP2_GMAC_PORT_RGMII_MASK;
|
|
default:
|
|
val &= ~MVPP2_GMAC_PCS_ENABLE_MASK;
|
|
}
|
|
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_2_REG);
|
|
}
|
|
|
|
static void mvpp2_port_fc_adv_enable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
val |= MVPP2_GMAC_FC_ADV_EN;
|
|
writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
}
|
|
|
|
static void mvpp2_port_enable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
val |= MVPP2_GMAC_PORT_EN_MASK;
|
|
val |= MVPP2_GMAC_MIB_CNTR_EN_MASK;
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
}
|
|
|
|
static void mvpp2_port_disable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
val &= ~(MVPP2_GMAC_PORT_EN_MASK);
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
}
|
|
|
|
/* Set IEEE 802.3x Flow Control Xon Packet Transmission Mode */
|
|
static void mvpp2_port_periodic_xon_disable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_1_REG) &
|
|
~MVPP2_GMAC_PERIODIC_XON_EN_MASK;
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_1_REG);
|
|
}
|
|
|
|
/* Configure loopback port */
|
|
static void mvpp2_port_loopback_set(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_1_REG);
|
|
|
|
if (port->speed == 1000)
|
|
val |= MVPP2_GMAC_GMII_LB_EN_MASK;
|
|
else
|
|
val &= ~MVPP2_GMAC_GMII_LB_EN_MASK;
|
|
|
|
if (port->phy_interface == PHY_INTERFACE_MODE_SGMII)
|
|
val |= MVPP2_GMAC_PCS_LB_EN_MASK;
|
|
else
|
|
val &= ~MVPP2_GMAC_PCS_LB_EN_MASK;
|
|
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_1_REG);
|
|
}
|
|
|
|
static void mvpp2_port_reset(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) &
|
|
~MVPP2_GMAC_PORT_RESET_MASK;
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_2_REG);
|
|
|
|
while (readl(port->base + MVPP2_GMAC_CTRL_2_REG) &
|
|
MVPP2_GMAC_PORT_RESET_MASK)
|
|
continue;
|
|
}
|
|
|
|
/* Change maximum receive size of the port */
|
|
static inline void mvpp2_gmac_max_rx_size_set(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
val &= ~MVPP2_GMAC_MAX_RX_SIZE_MASK;
|
|
val |= (((port->pkt_size - MVPP2_MH_SIZE) / 2) <<
|
|
MVPP2_GMAC_MAX_RX_SIZE_OFFS);
|
|
writel(val, port->base + MVPP2_GMAC_CTRL_0_REG);
|
|
}
|
|
|
|
/* Set defaults to the MVPP2 port */
|
|
static void mvpp2_defaults_set(struct mvpp2_port *port)
|
|
{
|
|
int tx_port_num, val, queue, ptxq, lrxq;
|
|
|
|
/* Configure port to loopback if needed */
|
|
if (port->flags & MVPP2_F_LOOPBACK)
|
|
mvpp2_port_loopback_set(port);
|
|
|
|
/* Update TX FIFO MIN Threshold */
|
|
val = readl(port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
|
|
val &= ~MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK;
|
|
/* Min. TX threshold must be less than minimal packet length */
|
|
val |= MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(64 - 4 - 2);
|
|
writel(val, port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG);
|
|
|
|
/* Disable Legacy WRR, Disable EJP, Release from reset */
|
|
tx_port_num = mvpp2_egress_port(port);
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG,
|
|
tx_port_num);
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_CMD_1_REG, 0);
|
|
|
|
/* Close bandwidth for all queues */
|
|
for (queue = 0; queue < MVPP2_MAX_TXQ; queue++) {
|
|
ptxq = mvpp2_txq_phys(port->id, queue);
|
|
mvpp2_write(port->priv,
|
|
MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(ptxq), 0);
|
|
}
|
|
|
|
/* Set refill period to 1 usec, refill tokens
|
|
* and bucket size to maximum
|
|
*/
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PERIOD_REG,
|
|
port->priv->tclk / USEC_PER_SEC);
|
|
val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_REFILL_REG);
|
|
val &= ~MVPP2_TXP_REFILL_PERIOD_ALL_MASK;
|
|
val |= MVPP2_TXP_REFILL_PERIOD_MASK(1);
|
|
val |= MVPP2_TXP_REFILL_TOKENS_ALL_MASK;
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_REFILL_REG, val);
|
|
val = MVPP2_TXP_TOKEN_SIZE_MAX;
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val);
|
|
|
|
/* Set MaximumLowLatencyPacketSize value to 256 */
|
|
mvpp2_write(port->priv, MVPP2_RX_CTRL_REG(port->id),
|
|
MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK |
|
|
MVPP2_RX_LOW_LATENCY_PKT_SIZE(256));
|
|
|
|
/* Enable Rx cache snoop */
|
|
for (lrxq = 0; lrxq < rxq_number; lrxq++) {
|
|
queue = port->rxqs[lrxq]->id;
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue));
|
|
val |= MVPP2_SNOOP_PKT_SIZE_MASK |
|
|
MVPP2_SNOOP_BUF_HDR_MASK;
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val);
|
|
}
|
|
|
|
/* At default, mask all interrupts to all present cpus */
|
|
mvpp2_interrupts_disable(port);
|
|
}
|
|
|
|
/* Enable/disable receiving packets */
|
|
static void mvpp2_ingress_enable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
int lrxq, queue;
|
|
|
|
for (lrxq = 0; lrxq < rxq_number; lrxq++) {
|
|
queue = port->rxqs[lrxq]->id;
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue));
|
|
val &= ~MVPP2_RXQ_DISABLE_MASK;
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val);
|
|
}
|
|
}
|
|
|
|
static void mvpp2_ingress_disable(struct mvpp2_port *port)
|
|
{
|
|
u32 val;
|
|
int lrxq, queue;
|
|
|
|
for (lrxq = 0; lrxq < rxq_number; lrxq++) {
|
|
queue = port->rxqs[lrxq]->id;
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue));
|
|
val |= MVPP2_RXQ_DISABLE_MASK;
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val);
|
|
}
|
|
}
|
|
|
|
/* Enable transmit via physical egress queue
|
|
* - HW starts take descriptors from DRAM
|
|
*/
|
|
static void mvpp2_egress_enable(struct mvpp2_port *port)
|
|
{
|
|
u32 qmap;
|
|
int queue;
|
|
int tx_port_num = mvpp2_egress_port(port);
|
|
|
|
/* Enable all initialized TXs. */
|
|
qmap = 0;
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
struct mvpp2_tx_queue *txq = port->txqs[queue];
|
|
|
|
if (txq->descs != NULL)
|
|
qmap |= (1 << queue);
|
|
}
|
|
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num);
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG, qmap);
|
|
}
|
|
|
|
/* Disable transmit via physical egress queue
|
|
* - HW doesn't take descriptors from DRAM
|
|
*/
|
|
static void mvpp2_egress_disable(struct mvpp2_port *port)
|
|
{
|
|
u32 reg_data;
|
|
int delay;
|
|
int tx_port_num = mvpp2_egress_port(port);
|
|
|
|
/* Issue stop command for active channels only */
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num);
|
|
reg_data = (mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG)) &
|
|
MVPP2_TXP_SCHED_ENQ_MASK;
|
|
if (reg_data != 0)
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG,
|
|
(reg_data << MVPP2_TXP_SCHED_DISQ_OFFSET));
|
|
|
|
/* Wait for all Tx activity to terminate. */
|
|
delay = 0;
|
|
do {
|
|
if (delay >= MVPP2_TX_DISABLE_TIMEOUT_MSEC) {
|
|
netdev_warn(port->dev,
|
|
"Tx stop timed out, status=0x%08x\n",
|
|
reg_data);
|
|
break;
|
|
}
|
|
mdelay(1);
|
|
delay++;
|
|
|
|
/* Check port TX Command register that all
|
|
* Tx queues are stopped
|
|
*/
|
|
reg_data = mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG);
|
|
} while (reg_data & MVPP2_TXP_SCHED_ENQ_MASK);
|
|
}
|
|
|
|
/* Rx descriptors helper methods */
|
|
|
|
/* Get number of Rx descriptors occupied by received packets */
|
|
static inline int
|
|
mvpp2_rxq_received(struct mvpp2_port *port, int rxq_id)
|
|
{
|
|
u32 val = mvpp2_read(port->priv, MVPP2_RXQ_STATUS_REG(rxq_id));
|
|
|
|
return val & MVPP2_RXQ_OCCUPIED_MASK;
|
|
}
|
|
|
|
/* Update Rx queue status with the number of occupied and available
|
|
* Rx descriptor slots.
|
|
*/
|
|
static inline void
|
|
mvpp2_rxq_status_update(struct mvpp2_port *port, int rxq_id,
|
|
int used_count, int free_count)
|
|
{
|
|
/* Decrement the number of used descriptors and increment count
|
|
* increment the number of free descriptors.
|
|
*/
|
|
u32 val = used_count | (free_count << MVPP2_RXQ_NUM_NEW_OFFSET);
|
|
|
|
mvpp2_write(port->priv, MVPP2_RXQ_STATUS_UPDATE_REG(rxq_id), val);
|
|
}
|
|
|
|
/* Get pointer to next RX descriptor to be processed by SW */
|
|
static inline struct mvpp2_rx_desc *
|
|
mvpp2_rxq_next_desc_get(struct mvpp2_rx_queue *rxq)
|
|
{
|
|
int rx_desc = rxq->next_desc_to_proc;
|
|
|
|
rxq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(rxq, rx_desc);
|
|
prefetch(rxq->descs + rxq->next_desc_to_proc);
|
|
return rxq->descs + rx_desc;
|
|
}
|
|
|
|
/* Set rx queue offset */
|
|
static void mvpp2_rxq_offset_set(struct mvpp2_port *port,
|
|
int prxq, int offset)
|
|
{
|
|
u32 val;
|
|
|
|
/* Convert offset from bytes to units of 32 bytes */
|
|
offset = offset >> 5;
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq));
|
|
val &= ~MVPP2_RXQ_PACKET_OFFSET_MASK;
|
|
|
|
/* Offset is in */
|
|
val |= ((offset << MVPP2_RXQ_PACKET_OFFSET_OFFS) &
|
|
MVPP2_RXQ_PACKET_OFFSET_MASK);
|
|
|
|
mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val);
|
|
}
|
|
|
|
/* Obtain BM cookie information from descriptor */
|
|
static u32 mvpp2_bm_cookie_build(struct mvpp2_rx_desc *rx_desc)
|
|
{
|
|
int pool = (rx_desc->status & MVPP2_RXD_BM_POOL_ID_MASK) >>
|
|
MVPP2_RXD_BM_POOL_ID_OFFS;
|
|
int cpu = smp_processor_id();
|
|
|
|
return ((pool & 0xFF) << MVPP2_BM_COOKIE_POOL_OFFS) |
|
|
((cpu & 0xFF) << MVPP2_BM_COOKIE_CPU_OFFS);
|
|
}
|
|
|
|
/* Tx descriptors helper methods */
|
|
|
|
/* Get number of Tx descriptors waiting to be transmitted by HW */
|
|
static int mvpp2_txq_pend_desc_num_get(struct mvpp2_port *port,
|
|
struct mvpp2_tx_queue *txq)
|
|
{
|
|
u32 val;
|
|
|
|
mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id);
|
|
val = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG);
|
|
|
|
return val & MVPP2_TXQ_PENDING_MASK;
|
|
}
|
|
|
|
/* Get pointer to next Tx descriptor to be processed (send) by HW */
|
|
static struct mvpp2_tx_desc *
|
|
mvpp2_txq_next_desc_get(struct mvpp2_tx_queue *txq)
|
|
{
|
|
int tx_desc = txq->next_desc_to_proc;
|
|
|
|
txq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(txq, tx_desc);
|
|
return txq->descs + tx_desc;
|
|
}
|
|
|
|
/* Update HW with number of aggregated Tx descriptors to be sent */
|
|
static void mvpp2_aggr_txq_pend_desc_add(struct mvpp2_port *port, int pending)
|
|
{
|
|
/* aggregated access - relevant TXQ number is written in TX desc */
|
|
mvpp2_write(port->priv, MVPP2_AGGR_TXQ_UPDATE_REG, pending);
|
|
}
|
|
|
|
|
|
/* Check if there are enough free descriptors in aggregated txq.
|
|
* If not, update the number of occupied descriptors and repeat the check.
|
|
*/
|
|
static int mvpp2_aggr_desc_num_check(struct mvpp2 *priv,
|
|
struct mvpp2_tx_queue *aggr_txq, int num)
|
|
{
|
|
if ((aggr_txq->count + num) > aggr_txq->size) {
|
|
/* Update number of occupied aggregated Tx descriptors */
|
|
int cpu = smp_processor_id();
|
|
u32 val = mvpp2_read(priv, MVPP2_AGGR_TXQ_STATUS_REG(cpu));
|
|
|
|
aggr_txq->count = val & MVPP2_AGGR_TXQ_PENDING_MASK;
|
|
}
|
|
|
|
if ((aggr_txq->count + num) > aggr_txq->size)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Reserved Tx descriptors allocation request */
|
|
static int mvpp2_txq_alloc_reserved_desc(struct mvpp2 *priv,
|
|
struct mvpp2_tx_queue *txq, int num)
|
|
{
|
|
u32 val;
|
|
|
|
val = (txq->id << MVPP2_TXQ_RSVD_REQ_Q_OFFSET) | num;
|
|
mvpp2_write(priv, MVPP2_TXQ_RSVD_REQ_REG, val);
|
|
|
|
val = mvpp2_read(priv, MVPP2_TXQ_RSVD_RSLT_REG);
|
|
|
|
return val & MVPP2_TXQ_RSVD_RSLT_MASK;
|
|
}
|
|
|
|
/* Check if there are enough reserved descriptors for transmission.
|
|
* If not, request chunk of reserved descriptors and check again.
|
|
*/
|
|
static int mvpp2_txq_reserved_desc_num_proc(struct mvpp2 *priv,
|
|
struct mvpp2_tx_queue *txq,
|
|
struct mvpp2_txq_pcpu *txq_pcpu,
|
|
int num)
|
|
{
|
|
int req, cpu, desc_count;
|
|
|
|
if (txq_pcpu->reserved_num >= num)
|
|
return 0;
|
|
|
|
/* Not enough descriptors reserved! Update the reserved descriptor
|
|
* count and check again.
|
|
*/
|
|
|
|
desc_count = 0;
|
|
/* Compute total of used descriptors */
|
|
for_each_present_cpu(cpu) {
|
|
struct mvpp2_txq_pcpu *txq_pcpu_aux;
|
|
|
|
txq_pcpu_aux = per_cpu_ptr(txq->pcpu, cpu);
|
|
desc_count += txq_pcpu_aux->count;
|
|
desc_count += txq_pcpu_aux->reserved_num;
|
|
}
|
|
|
|
req = max(MVPP2_CPU_DESC_CHUNK, num - txq_pcpu->reserved_num);
|
|
desc_count += req;
|
|
|
|
if (desc_count >
|
|
(txq->size - (num_present_cpus() * MVPP2_CPU_DESC_CHUNK)))
|
|
return -ENOMEM;
|
|
|
|
txq_pcpu->reserved_num += mvpp2_txq_alloc_reserved_desc(priv, txq, req);
|
|
|
|
/* OK, the descriptor cound has been updated: check again. */
|
|
if (txq_pcpu->reserved_num < num)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
/* Release the last allocated Tx descriptor. Useful to handle DMA
|
|
* mapping failures in the Tx path.
|
|
*/
|
|
static void mvpp2_txq_desc_put(struct mvpp2_tx_queue *txq)
|
|
{
|
|
if (txq->next_desc_to_proc == 0)
|
|
txq->next_desc_to_proc = txq->last_desc - 1;
|
|
else
|
|
txq->next_desc_to_proc--;
|
|
}
|
|
|
|
/* Set Tx descriptors fields relevant for CSUM calculation */
|
|
static u32 mvpp2_txq_desc_csum(int l3_offs, int l3_proto,
|
|
int ip_hdr_len, int l4_proto)
|
|
{
|
|
u32 command;
|
|
|
|
/* fields: L3_offset, IP_hdrlen, L3_type, G_IPv4_chk,
|
|
* G_L4_chk, L4_type required only for checksum calculation
|
|
*/
|
|
command = (l3_offs << MVPP2_TXD_L3_OFF_SHIFT);
|
|
command |= (ip_hdr_len << MVPP2_TXD_IP_HLEN_SHIFT);
|
|
command |= MVPP2_TXD_IP_CSUM_DISABLE;
|
|
|
|
if (l3_proto == swab16(ETH_P_IP)) {
|
|
command &= ~MVPP2_TXD_IP_CSUM_DISABLE; /* enable IPv4 csum */
|
|
command &= ~MVPP2_TXD_L3_IP6; /* enable IPv4 */
|
|
} else {
|
|
command |= MVPP2_TXD_L3_IP6; /* enable IPv6 */
|
|
}
|
|
|
|
if (l4_proto == IPPROTO_TCP) {
|
|
command &= ~MVPP2_TXD_L4_UDP; /* enable TCP */
|
|
command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */
|
|
} else if (l4_proto == IPPROTO_UDP) {
|
|
command |= MVPP2_TXD_L4_UDP; /* enable UDP */
|
|
command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */
|
|
} else {
|
|
command |= MVPP2_TXD_L4_CSUM_NOT;
|
|
}
|
|
|
|
return command;
|
|
}
|
|
|
|
/* Get number of sent descriptors and decrement counter.
|
|
* The number of sent descriptors is returned.
|
|
* Per-CPU access
|
|
*/
|
|
static inline int mvpp2_txq_sent_desc_proc(struct mvpp2_port *port,
|
|
struct mvpp2_tx_queue *txq)
|
|
{
|
|
u32 val;
|
|
|
|
/* Reading status reg resets transmitted descriptor counter */
|
|
val = mvpp2_read(port->priv, MVPP2_TXQ_SENT_REG(txq->id));
|
|
|
|
return (val & MVPP2_TRANSMITTED_COUNT_MASK) >>
|
|
MVPP2_TRANSMITTED_COUNT_OFFSET;
|
|
}
|
|
|
|
static void mvpp2_txq_sent_counter_clear(void *arg)
|
|
{
|
|
struct mvpp2_port *port = arg;
|
|
int queue;
|
|
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
int id = port->txqs[queue]->id;
|
|
|
|
mvpp2_read(port->priv, MVPP2_TXQ_SENT_REG(id));
|
|
}
|
|
}
|
|
|
|
/* Set max sizes for Tx queues */
|
|
static void mvpp2_txp_max_tx_size_set(struct mvpp2_port *port)
|
|
{
|
|
u32 val, size, mtu;
|
|
int txq, tx_port_num;
|
|
|
|
mtu = port->pkt_size * 8;
|
|
if (mtu > MVPP2_TXP_MTU_MAX)
|
|
mtu = MVPP2_TXP_MTU_MAX;
|
|
|
|
/* WA for wrong Token bucket update: Set MTU value = 3*real MTU value */
|
|
mtu = 3 * mtu;
|
|
|
|
/* Indirect access to registers */
|
|
tx_port_num = mvpp2_egress_port(port);
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num);
|
|
|
|
/* Set MTU */
|
|
val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_MTU_REG);
|
|
val &= ~MVPP2_TXP_MTU_MAX;
|
|
val |= mtu;
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_MTU_REG, val);
|
|
|
|
/* TXP token size and all TXQs token size must be larger that MTU */
|
|
val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG);
|
|
size = val & MVPP2_TXP_TOKEN_SIZE_MAX;
|
|
if (size < mtu) {
|
|
size = mtu;
|
|
val &= ~MVPP2_TXP_TOKEN_SIZE_MAX;
|
|
val |= size;
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val);
|
|
}
|
|
|
|
for (txq = 0; txq < txq_number; txq++) {
|
|
val = mvpp2_read(port->priv,
|
|
MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq));
|
|
size = val & MVPP2_TXQ_TOKEN_SIZE_MAX;
|
|
|
|
if (size < mtu) {
|
|
size = mtu;
|
|
val &= ~MVPP2_TXQ_TOKEN_SIZE_MAX;
|
|
val |= size;
|
|
mvpp2_write(port->priv,
|
|
MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq),
|
|
val);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set the number of packets that will be received before Rx interrupt
|
|
* will be generated by HW.
|
|
*/
|
|
static void mvpp2_rx_pkts_coal_set(struct mvpp2_port *port,
|
|
struct mvpp2_rx_queue *rxq, u32 pkts)
|
|
{
|
|
u32 val;
|
|
|
|
val = (pkts & MVPP2_OCCUPIED_THRESH_MASK);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_THRESH_REG, val);
|
|
|
|
rxq->pkts_coal = pkts;
|
|
}
|
|
|
|
/* Set the time delay in usec before Rx interrupt */
|
|
static void mvpp2_rx_time_coal_set(struct mvpp2_port *port,
|
|
struct mvpp2_rx_queue *rxq, u32 usec)
|
|
{
|
|
u32 val;
|
|
|
|
val = (port->priv->tclk / USEC_PER_SEC) * usec;
|
|
mvpp2_write(port->priv, MVPP2_ISR_RX_THRESHOLD_REG(rxq->id), val);
|
|
|
|
rxq->time_coal = usec;
|
|
}
|
|
|
|
/* Free Tx queue skbuffs */
|
|
static void mvpp2_txq_bufs_free(struct mvpp2_port *port,
|
|
struct mvpp2_tx_queue *txq,
|
|
struct mvpp2_txq_pcpu *txq_pcpu, int num)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
dma_addr_t buf_phys_addr =
|
|
txq_pcpu->tx_buffs[txq_pcpu->txq_get_index];
|
|
struct sk_buff *skb = txq_pcpu->tx_skb[txq_pcpu->txq_get_index];
|
|
|
|
mvpp2_txq_inc_get(txq_pcpu);
|
|
|
|
dma_unmap_single(port->dev->dev.parent, buf_phys_addr,
|
|
skb_headlen(skb), DMA_TO_DEVICE);
|
|
if (!skb)
|
|
continue;
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
}
|
|
|
|
static inline struct mvpp2_rx_queue *mvpp2_get_rx_queue(struct mvpp2_port *port,
|
|
u32 cause)
|
|
{
|
|
int queue = fls(cause) - 1;
|
|
|
|
return port->rxqs[queue];
|
|
}
|
|
|
|
static inline struct mvpp2_tx_queue *mvpp2_get_tx_queue(struct mvpp2_port *port,
|
|
u32 cause)
|
|
{
|
|
int queue = fls(cause) - 1;
|
|
|
|
return port->txqs[queue];
|
|
}
|
|
|
|
/* Handle end of transmission */
|
|
static void mvpp2_txq_done(struct mvpp2_port *port, struct mvpp2_tx_queue *txq,
|
|
struct mvpp2_txq_pcpu *txq_pcpu)
|
|
{
|
|
struct netdev_queue *nq = netdev_get_tx_queue(port->dev, txq->log_id);
|
|
int tx_done;
|
|
|
|
if (txq_pcpu->cpu != smp_processor_id())
|
|
netdev_err(port->dev, "wrong cpu on the end of Tx processing\n");
|
|
|
|
tx_done = mvpp2_txq_sent_desc_proc(port, txq);
|
|
if (!tx_done)
|
|
return;
|
|
mvpp2_txq_bufs_free(port, txq, txq_pcpu, tx_done);
|
|
|
|
txq_pcpu->count -= tx_done;
|
|
|
|
if (netif_tx_queue_stopped(nq))
|
|
if (txq_pcpu->size - txq_pcpu->count >= MAX_SKB_FRAGS + 1)
|
|
netif_tx_wake_queue(nq);
|
|
}
|
|
|
|
static unsigned int mvpp2_tx_done(struct mvpp2_port *port, u32 cause)
|
|
{
|
|
struct mvpp2_tx_queue *txq;
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
unsigned int tx_todo = 0;
|
|
|
|
while (cause) {
|
|
txq = mvpp2_get_tx_queue(port, cause);
|
|
if (!txq)
|
|
break;
|
|
|
|
txq_pcpu = this_cpu_ptr(txq->pcpu);
|
|
|
|
if (txq_pcpu->count) {
|
|
mvpp2_txq_done(port, txq, txq_pcpu);
|
|
tx_todo += txq_pcpu->count;
|
|
}
|
|
|
|
cause &= ~(1 << txq->log_id);
|
|
}
|
|
return tx_todo;
|
|
}
|
|
|
|
/* Rx/Tx queue initialization/cleanup methods */
|
|
|
|
/* Allocate and initialize descriptors for aggr TXQ */
|
|
static int mvpp2_aggr_txq_init(struct platform_device *pdev,
|
|
struct mvpp2_tx_queue *aggr_txq,
|
|
int desc_num, int cpu,
|
|
struct mvpp2 *priv)
|
|
{
|
|
/* Allocate memory for TX descriptors */
|
|
aggr_txq->descs = dma_alloc_coherent(&pdev->dev,
|
|
desc_num * MVPP2_DESC_ALIGNED_SIZE,
|
|
&aggr_txq->descs_phys, GFP_KERNEL);
|
|
if (!aggr_txq->descs)
|
|
return -ENOMEM;
|
|
|
|
/* Make sure descriptor address is cache line size aligned */
|
|
BUG_ON(aggr_txq->descs !=
|
|
PTR_ALIGN(aggr_txq->descs, MVPP2_CPU_D_CACHE_LINE_SIZE));
|
|
|
|
aggr_txq->last_desc = aggr_txq->size - 1;
|
|
|
|
/* Aggr TXQ no reset WA */
|
|
aggr_txq->next_desc_to_proc = mvpp2_read(priv,
|
|
MVPP2_AGGR_TXQ_INDEX_REG(cpu));
|
|
|
|
/* Set Tx descriptors queue starting address */
|
|
/* indirect access */
|
|
mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_ADDR_REG(cpu),
|
|
aggr_txq->descs_phys);
|
|
mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_SIZE_REG(cpu), desc_num);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Create a specified Rx queue */
|
|
static int mvpp2_rxq_init(struct mvpp2_port *port,
|
|
struct mvpp2_rx_queue *rxq)
|
|
|
|
{
|
|
rxq->size = port->rx_ring_size;
|
|
|
|
/* Allocate memory for RX descriptors */
|
|
rxq->descs = dma_alloc_coherent(port->dev->dev.parent,
|
|
rxq->size * MVPP2_DESC_ALIGNED_SIZE,
|
|
&rxq->descs_phys, GFP_KERNEL);
|
|
if (!rxq->descs)
|
|
return -ENOMEM;
|
|
|
|
BUG_ON(rxq->descs !=
|
|
PTR_ALIGN(rxq->descs, MVPP2_CPU_D_CACHE_LINE_SIZE));
|
|
|
|
rxq->last_desc = rxq->size - 1;
|
|
|
|
/* Zero occupied and non-occupied counters - direct access */
|
|
mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0);
|
|
|
|
/* Set Rx descriptors queue starting address - indirect access */
|
|
mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_DESC_ADDR_REG, rxq->descs_phys);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_DESC_SIZE_REG, rxq->size);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_INDEX_REG, 0);
|
|
|
|
/* Set Offset */
|
|
mvpp2_rxq_offset_set(port, rxq->id, NET_SKB_PAD);
|
|
|
|
/* Set coalescing pkts and time */
|
|
mvpp2_rx_pkts_coal_set(port, rxq, rxq->pkts_coal);
|
|
mvpp2_rx_time_coal_set(port, rxq, rxq->time_coal);
|
|
|
|
/* Add number of descriptors ready for receiving packets */
|
|
mvpp2_rxq_status_update(port, rxq->id, 0, rxq->size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Push packets received by the RXQ to BM pool */
|
|
static void mvpp2_rxq_drop_pkts(struct mvpp2_port *port,
|
|
struct mvpp2_rx_queue *rxq)
|
|
{
|
|
int rx_received, i;
|
|
|
|
rx_received = mvpp2_rxq_received(port, rxq->id);
|
|
if (!rx_received)
|
|
return;
|
|
|
|
for (i = 0; i < rx_received; i++) {
|
|
struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq);
|
|
u32 bm = mvpp2_bm_cookie_build(rx_desc);
|
|
|
|
mvpp2_pool_refill(port, bm, rx_desc->buf_phys_addr,
|
|
rx_desc->buf_cookie);
|
|
}
|
|
mvpp2_rxq_status_update(port, rxq->id, rx_received, rx_received);
|
|
}
|
|
|
|
/* Cleanup Rx queue */
|
|
static void mvpp2_rxq_deinit(struct mvpp2_port *port,
|
|
struct mvpp2_rx_queue *rxq)
|
|
{
|
|
mvpp2_rxq_drop_pkts(port, rxq);
|
|
|
|
if (rxq->descs)
|
|
dma_free_coherent(port->dev->dev.parent,
|
|
rxq->size * MVPP2_DESC_ALIGNED_SIZE,
|
|
rxq->descs,
|
|
rxq->descs_phys);
|
|
|
|
rxq->descs = NULL;
|
|
rxq->last_desc = 0;
|
|
rxq->next_desc_to_proc = 0;
|
|
rxq->descs_phys = 0;
|
|
|
|
/* Clear Rx descriptors queue starting address and size;
|
|
* free descriptor number
|
|
*/
|
|
mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_DESC_ADDR_REG, 0);
|
|
mvpp2_write(port->priv, MVPP2_RXQ_DESC_SIZE_REG, 0);
|
|
}
|
|
|
|
/* Create and initialize a Tx queue */
|
|
static int mvpp2_txq_init(struct mvpp2_port *port,
|
|
struct mvpp2_tx_queue *txq)
|
|
{
|
|
u32 val;
|
|
int cpu, desc, desc_per_txq, tx_port_num;
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
|
|
txq->size = port->tx_ring_size;
|
|
|
|
/* Allocate memory for Tx descriptors */
|
|
txq->descs = dma_alloc_coherent(port->dev->dev.parent,
|
|
txq->size * MVPP2_DESC_ALIGNED_SIZE,
|
|
&txq->descs_phys, GFP_KERNEL);
|
|
if (!txq->descs)
|
|
return -ENOMEM;
|
|
|
|
/* Make sure descriptor address is cache line size aligned */
|
|
BUG_ON(txq->descs !=
|
|
PTR_ALIGN(txq->descs, MVPP2_CPU_D_CACHE_LINE_SIZE));
|
|
|
|
txq->last_desc = txq->size - 1;
|
|
|
|
/* Set Tx descriptors queue starting address - indirect access */
|
|
mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_DESC_ADDR_REG, txq->descs_phys);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_DESC_SIZE_REG, txq->size &
|
|
MVPP2_TXQ_DESC_SIZE_MASK);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_INDEX_REG, 0);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_RSVD_CLR_REG,
|
|
txq->id << MVPP2_TXQ_RSVD_CLR_OFFSET);
|
|
val = mvpp2_read(port->priv, MVPP2_TXQ_PENDING_REG);
|
|
val &= ~MVPP2_TXQ_PENDING_MASK;
|
|
mvpp2_write(port->priv, MVPP2_TXQ_PENDING_REG, val);
|
|
|
|
/* Calculate base address in prefetch buffer. We reserve 16 descriptors
|
|
* for each existing TXQ.
|
|
* TCONTS for PON port must be continuous from 0 to MVPP2_MAX_TCONT
|
|
* GBE ports assumed to be continious from 0 to MVPP2_MAX_PORTS
|
|
*/
|
|
desc_per_txq = 16;
|
|
desc = (port->id * MVPP2_MAX_TXQ * desc_per_txq) +
|
|
(txq->log_id * desc_per_txq);
|
|
|
|
mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG,
|
|
MVPP2_PREF_BUF_PTR(desc) | MVPP2_PREF_BUF_SIZE_16 |
|
|
MVPP2_PREF_BUF_THRESH(desc_per_txq/2));
|
|
|
|
/* WRR / EJP configuration - indirect access */
|
|
tx_port_num = mvpp2_egress_port(port);
|
|
mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num);
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id));
|
|
val &= ~MVPP2_TXQ_REFILL_PERIOD_ALL_MASK;
|
|
val |= MVPP2_TXQ_REFILL_PERIOD_MASK(1);
|
|
val |= MVPP2_TXQ_REFILL_TOKENS_ALL_MASK;
|
|
mvpp2_write(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id), val);
|
|
|
|
val = MVPP2_TXQ_TOKEN_SIZE_MAX;
|
|
mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq->log_id),
|
|
val);
|
|
|
|
for_each_present_cpu(cpu) {
|
|
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
|
|
txq_pcpu->size = txq->size;
|
|
txq_pcpu->tx_skb = kmalloc(txq_pcpu->size *
|
|
sizeof(*txq_pcpu->tx_skb),
|
|
GFP_KERNEL);
|
|
if (!txq_pcpu->tx_skb)
|
|
goto error;
|
|
|
|
txq_pcpu->tx_buffs = kmalloc(txq_pcpu->size *
|
|
sizeof(dma_addr_t), GFP_KERNEL);
|
|
if (!txq_pcpu->tx_buffs)
|
|
goto error;
|
|
|
|
txq_pcpu->count = 0;
|
|
txq_pcpu->reserved_num = 0;
|
|
txq_pcpu->txq_put_index = 0;
|
|
txq_pcpu->txq_get_index = 0;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
for_each_present_cpu(cpu) {
|
|
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
|
|
kfree(txq_pcpu->tx_skb);
|
|
kfree(txq_pcpu->tx_buffs);
|
|
}
|
|
|
|
dma_free_coherent(port->dev->dev.parent,
|
|
txq->size * MVPP2_DESC_ALIGNED_SIZE,
|
|
txq->descs, txq->descs_phys);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Free allocated TXQ resources */
|
|
static void mvpp2_txq_deinit(struct mvpp2_port *port,
|
|
struct mvpp2_tx_queue *txq)
|
|
{
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
int cpu;
|
|
|
|
for_each_present_cpu(cpu) {
|
|
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
|
|
kfree(txq_pcpu->tx_skb);
|
|
kfree(txq_pcpu->tx_buffs);
|
|
}
|
|
|
|
if (txq->descs)
|
|
dma_free_coherent(port->dev->dev.parent,
|
|
txq->size * MVPP2_DESC_ALIGNED_SIZE,
|
|
txq->descs, txq->descs_phys);
|
|
|
|
txq->descs = NULL;
|
|
txq->last_desc = 0;
|
|
txq->next_desc_to_proc = 0;
|
|
txq->descs_phys = 0;
|
|
|
|
/* Set minimum bandwidth for disabled TXQs */
|
|
mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(txq->id), 0);
|
|
|
|
/* Set Tx descriptors queue starting address and size */
|
|
mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_DESC_ADDR_REG, 0);
|
|
mvpp2_write(port->priv, MVPP2_TXQ_DESC_SIZE_REG, 0);
|
|
}
|
|
|
|
/* Cleanup Tx ports */
|
|
static void mvpp2_txq_clean(struct mvpp2_port *port, struct mvpp2_tx_queue *txq)
|
|
{
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
int delay, pending, cpu;
|
|
u32 val;
|
|
|
|
mvpp2_write(port->priv, MVPP2_TXQ_NUM_REG, txq->id);
|
|
val = mvpp2_read(port->priv, MVPP2_TXQ_PREF_BUF_REG);
|
|
val |= MVPP2_TXQ_DRAIN_EN_MASK;
|
|
mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG, val);
|
|
|
|
/* The napi queue has been stopped so wait for all packets
|
|
* to be transmitted.
|
|
*/
|
|
delay = 0;
|
|
do {
|
|
if (delay >= MVPP2_TX_PENDING_TIMEOUT_MSEC) {
|
|
netdev_warn(port->dev,
|
|
"port %d: cleaning queue %d timed out\n",
|
|
port->id, txq->log_id);
|
|
break;
|
|
}
|
|
mdelay(1);
|
|
delay++;
|
|
|
|
pending = mvpp2_txq_pend_desc_num_get(port, txq);
|
|
} while (pending);
|
|
|
|
val &= ~MVPP2_TXQ_DRAIN_EN_MASK;
|
|
mvpp2_write(port->priv, MVPP2_TXQ_PREF_BUF_REG, val);
|
|
|
|
for_each_present_cpu(cpu) {
|
|
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
|
|
|
|
/* Release all packets */
|
|
mvpp2_txq_bufs_free(port, txq, txq_pcpu, txq_pcpu->count);
|
|
|
|
/* Reset queue */
|
|
txq_pcpu->count = 0;
|
|
txq_pcpu->txq_put_index = 0;
|
|
txq_pcpu->txq_get_index = 0;
|
|
}
|
|
}
|
|
|
|
/* Cleanup all Tx queues */
|
|
static void mvpp2_cleanup_txqs(struct mvpp2_port *port)
|
|
{
|
|
struct mvpp2_tx_queue *txq;
|
|
int queue;
|
|
u32 val;
|
|
|
|
val = mvpp2_read(port->priv, MVPP2_TX_PORT_FLUSH_REG);
|
|
|
|
/* Reset Tx ports and delete Tx queues */
|
|
val |= MVPP2_TX_PORT_FLUSH_MASK(port->id);
|
|
mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val);
|
|
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
txq = port->txqs[queue];
|
|
mvpp2_txq_clean(port, txq);
|
|
mvpp2_txq_deinit(port, txq);
|
|
}
|
|
|
|
on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1);
|
|
|
|
val &= ~MVPP2_TX_PORT_FLUSH_MASK(port->id);
|
|
mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val);
|
|
}
|
|
|
|
/* Cleanup all Rx queues */
|
|
static void mvpp2_cleanup_rxqs(struct mvpp2_port *port)
|
|
{
|
|
int queue;
|
|
|
|
for (queue = 0; queue < rxq_number; queue++)
|
|
mvpp2_rxq_deinit(port, port->rxqs[queue]);
|
|
}
|
|
|
|
/* Init all Rx queues for port */
|
|
static int mvpp2_setup_rxqs(struct mvpp2_port *port)
|
|
{
|
|
int queue, err;
|
|
|
|
for (queue = 0; queue < rxq_number; queue++) {
|
|
err = mvpp2_rxq_init(port, port->rxqs[queue]);
|
|
if (err)
|
|
goto err_cleanup;
|
|
}
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
mvpp2_cleanup_rxqs(port);
|
|
return err;
|
|
}
|
|
|
|
/* Init all tx queues for port */
|
|
static int mvpp2_setup_txqs(struct mvpp2_port *port)
|
|
{
|
|
struct mvpp2_tx_queue *txq;
|
|
int queue, err;
|
|
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
txq = port->txqs[queue];
|
|
err = mvpp2_txq_init(port, txq);
|
|
if (err)
|
|
goto err_cleanup;
|
|
}
|
|
|
|
on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1);
|
|
return 0;
|
|
|
|
err_cleanup:
|
|
mvpp2_cleanup_txqs(port);
|
|
return err;
|
|
}
|
|
|
|
/* The callback for per-port interrupt */
|
|
static irqreturn_t mvpp2_isr(int irq, void *dev_id)
|
|
{
|
|
struct mvpp2_port *port = (struct mvpp2_port *)dev_id;
|
|
|
|
mvpp2_interrupts_disable(port);
|
|
|
|
napi_schedule(&port->napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* Adjust link */
|
|
static void mvpp2_link_event(struct net_device *dev)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct phy_device *phydev = port->phy_dev;
|
|
int status_change = 0;
|
|
u32 val;
|
|
|
|
if (phydev->link) {
|
|
if ((port->speed != phydev->speed) ||
|
|
(port->duplex != phydev->duplex)) {
|
|
u32 val;
|
|
|
|
val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
val &= ~(MVPP2_GMAC_CONFIG_MII_SPEED |
|
|
MVPP2_GMAC_CONFIG_GMII_SPEED |
|
|
MVPP2_GMAC_CONFIG_FULL_DUPLEX |
|
|
MVPP2_GMAC_AN_SPEED_EN |
|
|
MVPP2_GMAC_AN_DUPLEX_EN);
|
|
|
|
if (phydev->duplex)
|
|
val |= MVPP2_GMAC_CONFIG_FULL_DUPLEX;
|
|
|
|
if (phydev->speed == SPEED_1000)
|
|
val |= MVPP2_GMAC_CONFIG_GMII_SPEED;
|
|
else if (phydev->speed == SPEED_100)
|
|
val |= MVPP2_GMAC_CONFIG_MII_SPEED;
|
|
|
|
writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
|
|
port->duplex = phydev->duplex;
|
|
port->speed = phydev->speed;
|
|
}
|
|
}
|
|
|
|
if (phydev->link != port->link) {
|
|
if (!phydev->link) {
|
|
port->duplex = -1;
|
|
port->speed = 0;
|
|
}
|
|
|
|
port->link = phydev->link;
|
|
status_change = 1;
|
|
}
|
|
|
|
if (status_change) {
|
|
if (phydev->link) {
|
|
val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
val |= (MVPP2_GMAC_FORCE_LINK_PASS |
|
|
MVPP2_GMAC_FORCE_LINK_DOWN);
|
|
writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
|
|
mvpp2_egress_enable(port);
|
|
mvpp2_ingress_enable(port);
|
|
} else {
|
|
mvpp2_ingress_disable(port);
|
|
mvpp2_egress_disable(port);
|
|
}
|
|
phy_print_status(phydev);
|
|
}
|
|
}
|
|
|
|
static void mvpp2_timer_set(struct mvpp2_port_pcpu *port_pcpu)
|
|
{
|
|
ktime_t interval;
|
|
|
|
if (!port_pcpu->timer_scheduled) {
|
|
port_pcpu->timer_scheduled = true;
|
|
interval = ktime_set(0, MVPP2_TXDONE_HRTIMER_PERIOD_NS);
|
|
hrtimer_start(&port_pcpu->tx_done_timer, interval,
|
|
HRTIMER_MODE_REL_PINNED);
|
|
}
|
|
}
|
|
|
|
static void mvpp2_tx_proc_cb(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu);
|
|
unsigned int tx_todo, cause;
|
|
|
|
if (!netif_running(dev))
|
|
return;
|
|
port_pcpu->timer_scheduled = false;
|
|
|
|
/* Process all the Tx queues */
|
|
cause = (1 << txq_number) - 1;
|
|
tx_todo = mvpp2_tx_done(port, cause);
|
|
|
|
/* Set the timer in case not all the packets were processed */
|
|
if (tx_todo)
|
|
mvpp2_timer_set(port_pcpu);
|
|
}
|
|
|
|
static enum hrtimer_restart mvpp2_hr_timer_cb(struct hrtimer *timer)
|
|
{
|
|
struct mvpp2_port_pcpu *port_pcpu = container_of(timer,
|
|
struct mvpp2_port_pcpu,
|
|
tx_done_timer);
|
|
|
|
tasklet_schedule(&port_pcpu->tx_done_tasklet);
|
|
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
/* Main RX/TX processing routines */
|
|
|
|
/* Display more error info */
|
|
static void mvpp2_rx_error(struct mvpp2_port *port,
|
|
struct mvpp2_rx_desc *rx_desc)
|
|
{
|
|
u32 status = rx_desc->status;
|
|
|
|
switch (status & MVPP2_RXD_ERR_CODE_MASK) {
|
|
case MVPP2_RXD_ERR_CRC:
|
|
netdev_err(port->dev, "bad rx status %08x (crc error), size=%d\n",
|
|
status, rx_desc->data_size);
|
|
break;
|
|
case MVPP2_RXD_ERR_OVERRUN:
|
|
netdev_err(port->dev, "bad rx status %08x (overrun error), size=%d\n",
|
|
status, rx_desc->data_size);
|
|
break;
|
|
case MVPP2_RXD_ERR_RESOURCE:
|
|
netdev_err(port->dev, "bad rx status %08x (resource error), size=%d\n",
|
|
status, rx_desc->data_size);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Handle RX checksum offload */
|
|
static void mvpp2_rx_csum(struct mvpp2_port *port, u32 status,
|
|
struct sk_buff *skb)
|
|
{
|
|
if (((status & MVPP2_RXD_L3_IP4) &&
|
|
!(status & MVPP2_RXD_IP4_HEADER_ERR)) ||
|
|
(status & MVPP2_RXD_L3_IP6))
|
|
if (((status & MVPP2_RXD_L4_UDP) ||
|
|
(status & MVPP2_RXD_L4_TCP)) &&
|
|
(status & MVPP2_RXD_L4_CSUM_OK)) {
|
|
skb->csum = 0;
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
return;
|
|
}
|
|
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
|
|
/* Reuse skb if possible, or allocate a new skb and add it to BM pool */
|
|
static int mvpp2_rx_refill(struct mvpp2_port *port,
|
|
struct mvpp2_bm_pool *bm_pool,
|
|
u32 bm, int is_recycle)
|
|
{
|
|
struct sk_buff *skb;
|
|
dma_addr_t phys_addr;
|
|
|
|
if (is_recycle &&
|
|
(atomic_read(&bm_pool->in_use) < bm_pool->in_use_thresh))
|
|
return 0;
|
|
|
|
/* No recycle or too many buffers are in use, so allocate a new skb */
|
|
skb = mvpp2_skb_alloc(port, bm_pool, &phys_addr, GFP_ATOMIC);
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
|
|
mvpp2_pool_refill(port, bm, (u32)phys_addr, (u32)skb);
|
|
atomic_dec(&bm_pool->in_use);
|
|
return 0;
|
|
}
|
|
|
|
/* Handle tx checksum */
|
|
static u32 mvpp2_skb_tx_csum(struct mvpp2_port *port, struct sk_buff *skb)
|
|
{
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
int ip_hdr_len = 0;
|
|
u8 l4_proto;
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
struct iphdr *ip4h = ip_hdr(skb);
|
|
|
|
/* Calculate IPv4 checksum and L4 checksum */
|
|
ip_hdr_len = ip4h->ihl;
|
|
l4_proto = ip4h->protocol;
|
|
} else if (skb->protocol == htons(ETH_P_IPV6)) {
|
|
struct ipv6hdr *ip6h = ipv6_hdr(skb);
|
|
|
|
/* Read l4_protocol from one of IPv6 extra headers */
|
|
if (skb_network_header_len(skb) > 0)
|
|
ip_hdr_len = (skb_network_header_len(skb) >> 2);
|
|
l4_proto = ip6h->nexthdr;
|
|
} else {
|
|
return MVPP2_TXD_L4_CSUM_NOT;
|
|
}
|
|
|
|
return mvpp2_txq_desc_csum(skb_network_offset(skb),
|
|
skb->protocol, ip_hdr_len, l4_proto);
|
|
}
|
|
|
|
return MVPP2_TXD_L4_CSUM_NOT | MVPP2_TXD_IP_CSUM_DISABLE;
|
|
}
|
|
|
|
static void mvpp2_buff_hdr_rx(struct mvpp2_port *port,
|
|
struct mvpp2_rx_desc *rx_desc)
|
|
{
|
|
struct mvpp2_buff_hdr *buff_hdr;
|
|
struct sk_buff *skb;
|
|
u32 rx_status = rx_desc->status;
|
|
u32 buff_phys_addr;
|
|
u32 buff_virt_addr;
|
|
u32 buff_phys_addr_next;
|
|
u32 buff_virt_addr_next;
|
|
int mc_id;
|
|
int pool_id;
|
|
|
|
pool_id = (rx_status & MVPP2_RXD_BM_POOL_ID_MASK) >>
|
|
MVPP2_RXD_BM_POOL_ID_OFFS;
|
|
buff_phys_addr = rx_desc->buf_phys_addr;
|
|
buff_virt_addr = rx_desc->buf_cookie;
|
|
|
|
do {
|
|
skb = (struct sk_buff *)buff_virt_addr;
|
|
buff_hdr = (struct mvpp2_buff_hdr *)skb->head;
|
|
|
|
mc_id = MVPP2_B_HDR_INFO_MC_ID(buff_hdr->info);
|
|
|
|
buff_phys_addr_next = buff_hdr->next_buff_phys_addr;
|
|
buff_virt_addr_next = buff_hdr->next_buff_virt_addr;
|
|
|
|
/* Release buffer */
|
|
mvpp2_bm_pool_mc_put(port, pool_id, buff_phys_addr,
|
|
buff_virt_addr, mc_id);
|
|
|
|
buff_phys_addr = buff_phys_addr_next;
|
|
buff_virt_addr = buff_virt_addr_next;
|
|
|
|
} while (!MVPP2_B_HDR_INFO_IS_LAST(buff_hdr->info));
|
|
}
|
|
|
|
/* Main rx processing */
|
|
static int mvpp2_rx(struct mvpp2_port *port, int rx_todo,
|
|
struct mvpp2_rx_queue *rxq)
|
|
{
|
|
struct net_device *dev = port->dev;
|
|
int rx_received;
|
|
int rx_done = 0;
|
|
u32 rcvd_pkts = 0;
|
|
u32 rcvd_bytes = 0;
|
|
|
|
/* Get number of received packets and clamp the to-do */
|
|
rx_received = mvpp2_rxq_received(port, rxq->id);
|
|
if (rx_todo > rx_received)
|
|
rx_todo = rx_received;
|
|
|
|
while (rx_done < rx_todo) {
|
|
struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq);
|
|
struct mvpp2_bm_pool *bm_pool;
|
|
struct sk_buff *skb;
|
|
dma_addr_t phys_addr;
|
|
u32 bm, rx_status;
|
|
int pool, rx_bytes, err;
|
|
|
|
rx_done++;
|
|
rx_status = rx_desc->status;
|
|
rx_bytes = rx_desc->data_size - MVPP2_MH_SIZE;
|
|
phys_addr = rx_desc->buf_phys_addr;
|
|
|
|
bm = mvpp2_bm_cookie_build(rx_desc);
|
|
pool = mvpp2_bm_cookie_pool_get(bm);
|
|
bm_pool = &port->priv->bm_pools[pool];
|
|
/* Check if buffer header is used */
|
|
if (rx_status & MVPP2_RXD_BUF_HDR) {
|
|
mvpp2_buff_hdr_rx(port, rx_desc);
|
|
continue;
|
|
}
|
|
|
|
/* In case of an error, release the requested buffer pointer
|
|
* to the Buffer Manager. This request process is controlled
|
|
* by the hardware, and the information about the buffer is
|
|
* comprised by the RX descriptor.
|
|
*/
|
|
if (rx_status & MVPP2_RXD_ERR_SUMMARY) {
|
|
err_drop_frame:
|
|
dev->stats.rx_errors++;
|
|
mvpp2_rx_error(port, rx_desc);
|
|
/* Return the buffer to the pool */
|
|
mvpp2_pool_refill(port, bm, rx_desc->buf_phys_addr,
|
|
rx_desc->buf_cookie);
|
|
continue;
|
|
}
|
|
|
|
skb = (struct sk_buff *)rx_desc->buf_cookie;
|
|
|
|
err = mvpp2_rx_refill(port, bm_pool, bm, 0);
|
|
if (err) {
|
|
netdev_err(port->dev, "failed to refill BM pools\n");
|
|
goto err_drop_frame;
|
|
}
|
|
|
|
dma_unmap_single(dev->dev.parent, phys_addr,
|
|
bm_pool->buf_size, DMA_FROM_DEVICE);
|
|
|
|
rcvd_pkts++;
|
|
rcvd_bytes += rx_bytes;
|
|
atomic_inc(&bm_pool->in_use);
|
|
|
|
skb_reserve(skb, MVPP2_MH_SIZE);
|
|
skb_put(skb, rx_bytes);
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
mvpp2_rx_csum(port, rx_status, skb);
|
|
|
|
napi_gro_receive(&port->napi, skb);
|
|
}
|
|
|
|
if (rcvd_pkts) {
|
|
struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats);
|
|
|
|
u64_stats_update_begin(&stats->syncp);
|
|
stats->rx_packets += rcvd_pkts;
|
|
stats->rx_bytes += rcvd_bytes;
|
|
u64_stats_update_end(&stats->syncp);
|
|
}
|
|
|
|
/* Update Rx queue management counters */
|
|
wmb();
|
|
mvpp2_rxq_status_update(port, rxq->id, rx_done, rx_done);
|
|
|
|
return rx_todo;
|
|
}
|
|
|
|
static inline void
|
|
tx_desc_unmap_put(struct device *dev, struct mvpp2_tx_queue *txq,
|
|
struct mvpp2_tx_desc *desc)
|
|
{
|
|
dma_unmap_single(dev, desc->buf_phys_addr,
|
|
desc->data_size, DMA_TO_DEVICE);
|
|
mvpp2_txq_desc_put(txq);
|
|
}
|
|
|
|
/* Handle tx fragmentation processing */
|
|
static int mvpp2_tx_frag_process(struct mvpp2_port *port, struct sk_buff *skb,
|
|
struct mvpp2_tx_queue *aggr_txq,
|
|
struct mvpp2_tx_queue *txq)
|
|
{
|
|
struct mvpp2_txq_pcpu *txq_pcpu = this_cpu_ptr(txq->pcpu);
|
|
struct mvpp2_tx_desc *tx_desc;
|
|
int i;
|
|
dma_addr_t buf_phys_addr;
|
|
|
|
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
|
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
|
|
void *addr = page_address(frag->page.p) + frag->page_offset;
|
|
|
|
tx_desc = mvpp2_txq_next_desc_get(aggr_txq);
|
|
tx_desc->phys_txq = txq->id;
|
|
tx_desc->data_size = frag->size;
|
|
|
|
buf_phys_addr = dma_map_single(port->dev->dev.parent, addr,
|
|
tx_desc->data_size,
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(port->dev->dev.parent, buf_phys_addr)) {
|
|
mvpp2_txq_desc_put(txq);
|
|
goto error;
|
|
}
|
|
|
|
tx_desc->packet_offset = buf_phys_addr & MVPP2_TX_DESC_ALIGN;
|
|
tx_desc->buf_phys_addr = buf_phys_addr & (~MVPP2_TX_DESC_ALIGN);
|
|
|
|
if (i == (skb_shinfo(skb)->nr_frags - 1)) {
|
|
/* Last descriptor */
|
|
tx_desc->command = MVPP2_TXD_L_DESC;
|
|
mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc);
|
|
} else {
|
|
/* Descriptor in the middle: Not First, Not Last */
|
|
tx_desc->command = 0;
|
|
mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
error:
|
|
/* Release all descriptors that were used to map fragments of
|
|
* this packet, as well as the corresponding DMA mappings
|
|
*/
|
|
for (i = i - 1; i >= 0; i--) {
|
|
tx_desc = txq->descs + i;
|
|
tx_desc_unmap_put(port->dev->dev.parent, txq, tx_desc);
|
|
}
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Main tx processing */
|
|
static int mvpp2_tx(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct mvpp2_tx_queue *txq, *aggr_txq;
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
struct mvpp2_tx_desc *tx_desc;
|
|
dma_addr_t buf_phys_addr;
|
|
int frags = 0;
|
|
u16 txq_id;
|
|
u32 tx_cmd;
|
|
|
|
txq_id = skb_get_queue_mapping(skb);
|
|
txq = port->txqs[txq_id];
|
|
txq_pcpu = this_cpu_ptr(txq->pcpu);
|
|
aggr_txq = &port->priv->aggr_txqs[smp_processor_id()];
|
|
|
|
frags = skb_shinfo(skb)->nr_frags + 1;
|
|
|
|
/* Check number of available descriptors */
|
|
if (mvpp2_aggr_desc_num_check(port->priv, aggr_txq, frags) ||
|
|
mvpp2_txq_reserved_desc_num_proc(port->priv, txq,
|
|
txq_pcpu, frags)) {
|
|
frags = 0;
|
|
goto out;
|
|
}
|
|
|
|
/* Get a descriptor for the first part of the packet */
|
|
tx_desc = mvpp2_txq_next_desc_get(aggr_txq);
|
|
tx_desc->phys_txq = txq->id;
|
|
tx_desc->data_size = skb_headlen(skb);
|
|
|
|
buf_phys_addr = dma_map_single(dev->dev.parent, skb->data,
|
|
tx_desc->data_size, DMA_TO_DEVICE);
|
|
if (unlikely(dma_mapping_error(dev->dev.parent, buf_phys_addr))) {
|
|
mvpp2_txq_desc_put(txq);
|
|
frags = 0;
|
|
goto out;
|
|
}
|
|
tx_desc->packet_offset = buf_phys_addr & MVPP2_TX_DESC_ALIGN;
|
|
tx_desc->buf_phys_addr = buf_phys_addr & ~MVPP2_TX_DESC_ALIGN;
|
|
|
|
tx_cmd = mvpp2_skb_tx_csum(port, skb);
|
|
|
|
if (frags == 1) {
|
|
/* First and Last descriptor */
|
|
tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_L_DESC;
|
|
tx_desc->command = tx_cmd;
|
|
mvpp2_txq_inc_put(txq_pcpu, skb, tx_desc);
|
|
} else {
|
|
/* First but not Last */
|
|
tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_PADDING_DISABLE;
|
|
tx_desc->command = tx_cmd;
|
|
mvpp2_txq_inc_put(txq_pcpu, NULL, tx_desc);
|
|
|
|
/* Continue with other skb fragments */
|
|
if (mvpp2_tx_frag_process(port, skb, aggr_txq, txq)) {
|
|
tx_desc_unmap_put(port->dev->dev.parent, txq, tx_desc);
|
|
frags = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
txq_pcpu->reserved_num -= frags;
|
|
txq_pcpu->count += frags;
|
|
aggr_txq->count += frags;
|
|
|
|
/* Enable transmit */
|
|
wmb();
|
|
mvpp2_aggr_txq_pend_desc_add(port, frags);
|
|
|
|
if (txq_pcpu->size - txq_pcpu->count < MAX_SKB_FRAGS + 1) {
|
|
struct netdev_queue *nq = netdev_get_tx_queue(dev, txq_id);
|
|
|
|
netif_tx_stop_queue(nq);
|
|
}
|
|
out:
|
|
if (frags > 0) {
|
|
struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats);
|
|
|
|
u64_stats_update_begin(&stats->syncp);
|
|
stats->tx_packets++;
|
|
stats->tx_bytes += skb->len;
|
|
u64_stats_update_end(&stats->syncp);
|
|
} else {
|
|
dev->stats.tx_dropped++;
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
/* Finalize TX processing */
|
|
if (txq_pcpu->count >= txq->done_pkts_coal)
|
|
mvpp2_txq_done(port, txq, txq_pcpu);
|
|
|
|
/* Set the timer in case not all frags were processed */
|
|
if (txq_pcpu->count <= frags && txq_pcpu->count > 0) {
|
|
struct mvpp2_port_pcpu *port_pcpu = this_cpu_ptr(port->pcpu);
|
|
|
|
mvpp2_timer_set(port_pcpu);
|
|
}
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static inline void mvpp2_cause_error(struct net_device *dev, int cause)
|
|
{
|
|
if (cause & MVPP2_CAUSE_FCS_ERR_MASK)
|
|
netdev_err(dev, "FCS error\n");
|
|
if (cause & MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK)
|
|
netdev_err(dev, "rx fifo overrun error\n");
|
|
if (cause & MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK)
|
|
netdev_err(dev, "tx fifo underrun error\n");
|
|
}
|
|
|
|
static int mvpp2_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
u32 cause_rx_tx, cause_rx, cause_misc;
|
|
int rx_done = 0;
|
|
struct mvpp2_port *port = netdev_priv(napi->dev);
|
|
|
|
/* Rx/Tx cause register
|
|
*
|
|
* Bits 0-15: each bit indicates received packets on the Rx queue
|
|
* (bit 0 is for Rx queue 0).
|
|
*
|
|
* Bits 16-23: each bit indicates transmitted packets on the Tx queue
|
|
* (bit 16 is for Tx queue 0).
|
|
*
|
|
* Each CPU has its own Rx/Tx cause register
|
|
*/
|
|
cause_rx_tx = mvpp2_read(port->priv,
|
|
MVPP2_ISR_RX_TX_CAUSE_REG(port->id));
|
|
cause_rx_tx &= ~MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK;
|
|
cause_misc = cause_rx_tx & MVPP2_CAUSE_MISC_SUM_MASK;
|
|
|
|
if (cause_misc) {
|
|
mvpp2_cause_error(port->dev, cause_misc);
|
|
|
|
/* Clear the cause register */
|
|
mvpp2_write(port->priv, MVPP2_ISR_MISC_CAUSE_REG, 0);
|
|
mvpp2_write(port->priv, MVPP2_ISR_RX_TX_CAUSE_REG(port->id),
|
|
cause_rx_tx & ~MVPP2_CAUSE_MISC_SUM_MASK);
|
|
}
|
|
|
|
cause_rx = cause_rx_tx & MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK;
|
|
|
|
/* Process RX packets */
|
|
cause_rx |= port->pending_cause_rx;
|
|
while (cause_rx && budget > 0) {
|
|
int count;
|
|
struct mvpp2_rx_queue *rxq;
|
|
|
|
rxq = mvpp2_get_rx_queue(port, cause_rx);
|
|
if (!rxq)
|
|
break;
|
|
|
|
count = mvpp2_rx(port, budget, rxq);
|
|
rx_done += count;
|
|
budget -= count;
|
|
if (budget > 0) {
|
|
/* Clear the bit associated to this Rx queue
|
|
* so that next iteration will continue from
|
|
* the next Rx queue.
|
|
*/
|
|
cause_rx &= ~(1 << rxq->logic_rxq);
|
|
}
|
|
}
|
|
|
|
if (budget > 0) {
|
|
cause_rx = 0;
|
|
napi_complete(napi);
|
|
|
|
mvpp2_interrupts_enable(port);
|
|
}
|
|
port->pending_cause_rx = cause_rx;
|
|
return rx_done;
|
|
}
|
|
|
|
/* Set hw internals when starting port */
|
|
static void mvpp2_start_dev(struct mvpp2_port *port)
|
|
{
|
|
mvpp2_gmac_max_rx_size_set(port);
|
|
mvpp2_txp_max_tx_size_set(port);
|
|
|
|
napi_enable(&port->napi);
|
|
|
|
/* Enable interrupts on all CPUs */
|
|
mvpp2_interrupts_enable(port);
|
|
|
|
mvpp2_port_enable(port);
|
|
phy_start(port->phy_dev);
|
|
netif_tx_start_all_queues(port->dev);
|
|
}
|
|
|
|
/* Set hw internals when stopping port */
|
|
static void mvpp2_stop_dev(struct mvpp2_port *port)
|
|
{
|
|
/* Stop new packets from arriving to RXQs */
|
|
mvpp2_ingress_disable(port);
|
|
|
|
mdelay(10);
|
|
|
|
/* Disable interrupts on all CPUs */
|
|
mvpp2_interrupts_disable(port);
|
|
|
|
napi_disable(&port->napi);
|
|
|
|
netif_carrier_off(port->dev);
|
|
netif_tx_stop_all_queues(port->dev);
|
|
|
|
mvpp2_egress_disable(port);
|
|
mvpp2_port_disable(port);
|
|
phy_stop(port->phy_dev);
|
|
}
|
|
|
|
/* Return positive if MTU is valid */
|
|
static inline int mvpp2_check_mtu_valid(struct net_device *dev, int mtu)
|
|
{
|
|
if (mtu < 68) {
|
|
netdev_err(dev, "cannot change mtu to less than 68\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* 9676 == 9700 - 20 and rounding to 8 */
|
|
if (mtu > 9676) {
|
|
netdev_info(dev, "illegal MTU value %d, round to 9676\n", mtu);
|
|
mtu = 9676;
|
|
}
|
|
|
|
if (!IS_ALIGNED(MVPP2_RX_PKT_SIZE(mtu), 8)) {
|
|
netdev_info(dev, "illegal MTU value %d, round to %d\n", mtu,
|
|
ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8));
|
|
mtu = ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8);
|
|
}
|
|
|
|
return mtu;
|
|
}
|
|
|
|
static int mvpp2_check_ringparam_valid(struct net_device *dev,
|
|
struct ethtool_ringparam *ring)
|
|
{
|
|
u16 new_rx_pending = ring->rx_pending;
|
|
u16 new_tx_pending = ring->tx_pending;
|
|
|
|
if (ring->rx_pending == 0 || ring->tx_pending == 0)
|
|
return -EINVAL;
|
|
|
|
if (ring->rx_pending > MVPP2_MAX_RXD)
|
|
new_rx_pending = MVPP2_MAX_RXD;
|
|
else if (!IS_ALIGNED(ring->rx_pending, 16))
|
|
new_rx_pending = ALIGN(ring->rx_pending, 16);
|
|
|
|
if (ring->tx_pending > MVPP2_MAX_TXD)
|
|
new_tx_pending = MVPP2_MAX_TXD;
|
|
else if (!IS_ALIGNED(ring->tx_pending, 32))
|
|
new_tx_pending = ALIGN(ring->tx_pending, 32);
|
|
|
|
if (ring->rx_pending != new_rx_pending) {
|
|
netdev_info(dev, "illegal Rx ring size value %d, round to %d\n",
|
|
ring->rx_pending, new_rx_pending);
|
|
ring->rx_pending = new_rx_pending;
|
|
}
|
|
|
|
if (ring->tx_pending != new_tx_pending) {
|
|
netdev_info(dev, "illegal Tx ring size value %d, round to %d\n",
|
|
ring->tx_pending, new_tx_pending);
|
|
ring->tx_pending = new_tx_pending;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mvpp2_get_mac_address(struct mvpp2_port *port, unsigned char *addr)
|
|
{
|
|
u32 mac_addr_l, mac_addr_m, mac_addr_h;
|
|
|
|
mac_addr_l = readl(port->base + MVPP2_GMAC_CTRL_1_REG);
|
|
mac_addr_m = readl(port->priv->lms_base + MVPP2_SRC_ADDR_MIDDLE);
|
|
mac_addr_h = readl(port->priv->lms_base + MVPP2_SRC_ADDR_HIGH);
|
|
addr[0] = (mac_addr_h >> 24) & 0xFF;
|
|
addr[1] = (mac_addr_h >> 16) & 0xFF;
|
|
addr[2] = (mac_addr_h >> 8) & 0xFF;
|
|
addr[3] = mac_addr_h & 0xFF;
|
|
addr[4] = mac_addr_m & 0xFF;
|
|
addr[5] = (mac_addr_l >> MVPP2_GMAC_SA_LOW_OFFS) & 0xFF;
|
|
}
|
|
|
|
static int mvpp2_phy_connect(struct mvpp2_port *port)
|
|
{
|
|
struct phy_device *phy_dev;
|
|
|
|
phy_dev = of_phy_connect(port->dev, port->phy_node, mvpp2_link_event, 0,
|
|
port->phy_interface);
|
|
if (!phy_dev) {
|
|
netdev_err(port->dev, "cannot connect to phy\n");
|
|
return -ENODEV;
|
|
}
|
|
phy_dev->supported &= PHY_GBIT_FEATURES;
|
|
phy_dev->advertising = phy_dev->supported;
|
|
|
|
port->phy_dev = phy_dev;
|
|
port->link = 0;
|
|
port->duplex = 0;
|
|
port->speed = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mvpp2_phy_disconnect(struct mvpp2_port *port)
|
|
{
|
|
phy_disconnect(port->phy_dev);
|
|
port->phy_dev = NULL;
|
|
}
|
|
|
|
static int mvpp2_open(struct net_device *dev)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
unsigned char mac_bcast[ETH_ALEN] = {
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
|
|
int err;
|
|
|
|
err = mvpp2_prs_mac_da_accept(port->priv, port->id, mac_bcast, true);
|
|
if (err) {
|
|
netdev_err(dev, "mvpp2_prs_mac_da_accept BC failed\n");
|
|
return err;
|
|
}
|
|
err = mvpp2_prs_mac_da_accept(port->priv, port->id,
|
|
dev->dev_addr, true);
|
|
if (err) {
|
|
netdev_err(dev, "mvpp2_prs_mac_da_accept MC failed\n");
|
|
return err;
|
|
}
|
|
err = mvpp2_prs_tag_mode_set(port->priv, port->id, MVPP2_TAG_TYPE_MH);
|
|
if (err) {
|
|
netdev_err(dev, "mvpp2_prs_tag_mode_set failed\n");
|
|
return err;
|
|
}
|
|
err = mvpp2_prs_def_flow(port);
|
|
if (err) {
|
|
netdev_err(dev, "mvpp2_prs_def_flow failed\n");
|
|
return err;
|
|
}
|
|
|
|
/* Allocate the Rx/Tx queues */
|
|
err = mvpp2_setup_rxqs(port);
|
|
if (err) {
|
|
netdev_err(port->dev, "cannot allocate Rx queues\n");
|
|
return err;
|
|
}
|
|
|
|
err = mvpp2_setup_txqs(port);
|
|
if (err) {
|
|
netdev_err(port->dev, "cannot allocate Tx queues\n");
|
|
goto err_cleanup_rxqs;
|
|
}
|
|
|
|
err = request_irq(port->irq, mvpp2_isr, 0, dev->name, port);
|
|
if (err) {
|
|
netdev_err(port->dev, "cannot request IRQ %d\n", port->irq);
|
|
goto err_cleanup_txqs;
|
|
}
|
|
|
|
/* In default link is down */
|
|
netif_carrier_off(port->dev);
|
|
|
|
err = mvpp2_phy_connect(port);
|
|
if (err < 0)
|
|
goto err_free_irq;
|
|
|
|
/* Unmask interrupts on all CPUs */
|
|
on_each_cpu(mvpp2_interrupts_unmask, port, 1);
|
|
|
|
mvpp2_start_dev(port);
|
|
|
|
return 0;
|
|
|
|
err_free_irq:
|
|
free_irq(port->irq, port);
|
|
err_cleanup_txqs:
|
|
mvpp2_cleanup_txqs(port);
|
|
err_cleanup_rxqs:
|
|
mvpp2_cleanup_rxqs(port);
|
|
return err;
|
|
}
|
|
|
|
static int mvpp2_stop(struct net_device *dev)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct mvpp2_port_pcpu *port_pcpu;
|
|
int cpu;
|
|
|
|
mvpp2_stop_dev(port);
|
|
mvpp2_phy_disconnect(port);
|
|
|
|
/* Mask interrupts on all CPUs */
|
|
on_each_cpu(mvpp2_interrupts_mask, port, 1);
|
|
|
|
free_irq(port->irq, port);
|
|
for_each_present_cpu(cpu) {
|
|
port_pcpu = per_cpu_ptr(port->pcpu, cpu);
|
|
|
|
hrtimer_cancel(&port_pcpu->tx_done_timer);
|
|
port_pcpu->timer_scheduled = false;
|
|
tasklet_kill(&port_pcpu->tx_done_tasklet);
|
|
}
|
|
mvpp2_cleanup_rxqs(port);
|
|
mvpp2_cleanup_txqs(port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mvpp2_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
struct mvpp2 *priv = port->priv;
|
|
struct netdev_hw_addr *ha;
|
|
int id = port->id;
|
|
bool allmulti = dev->flags & IFF_ALLMULTI;
|
|
|
|
mvpp2_prs_mac_promisc_set(priv, id, dev->flags & IFF_PROMISC);
|
|
mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_ALL, allmulti);
|
|
mvpp2_prs_mac_multi_set(priv, id, MVPP2_PE_MAC_MC_IP6, allmulti);
|
|
|
|
/* Remove all port->id's mcast enries */
|
|
mvpp2_prs_mcast_del_all(priv, id);
|
|
|
|
if (allmulti && !netdev_mc_empty(dev)) {
|
|
netdev_for_each_mc_addr(ha, dev)
|
|
mvpp2_prs_mac_da_accept(priv, id, ha->addr, true);
|
|
}
|
|
}
|
|
|
|
static int mvpp2_set_mac_address(struct net_device *dev, void *p)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
const struct sockaddr *addr = p;
|
|
int err;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data)) {
|
|
err = -EADDRNOTAVAIL;
|
|
goto error;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = mvpp2_prs_update_mac_da(dev, addr->sa_data);
|
|
if (!err)
|
|
return 0;
|
|
/* Reconfigure parser to accept the original MAC address */
|
|
err = mvpp2_prs_update_mac_da(dev, dev->dev_addr);
|
|
if (err)
|
|
goto error;
|
|
}
|
|
|
|
mvpp2_stop_dev(port);
|
|
|
|
err = mvpp2_prs_update_mac_da(dev, addr->sa_data);
|
|
if (!err)
|
|
goto out_start;
|
|
|
|
/* Reconfigure parser accept the original MAC address */
|
|
err = mvpp2_prs_update_mac_da(dev, dev->dev_addr);
|
|
if (err)
|
|
goto error;
|
|
out_start:
|
|
mvpp2_start_dev(port);
|
|
mvpp2_egress_enable(port);
|
|
mvpp2_ingress_enable(port);
|
|
return 0;
|
|
|
|
error:
|
|
netdev_err(dev, "fail to change MAC address\n");
|
|
return err;
|
|
}
|
|
|
|
static int mvpp2_change_mtu(struct net_device *dev, int mtu)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
int err;
|
|
|
|
mtu = mvpp2_check_mtu_valid(dev, mtu);
|
|
if (mtu < 0) {
|
|
err = mtu;
|
|
goto error;
|
|
}
|
|
|
|
if (!netif_running(dev)) {
|
|
err = mvpp2_bm_update_mtu(dev, mtu);
|
|
if (!err) {
|
|
port->pkt_size = MVPP2_RX_PKT_SIZE(mtu);
|
|
return 0;
|
|
}
|
|
|
|
/* Reconfigure BM to the original MTU */
|
|
err = mvpp2_bm_update_mtu(dev, dev->mtu);
|
|
if (err)
|
|
goto error;
|
|
}
|
|
|
|
mvpp2_stop_dev(port);
|
|
|
|
err = mvpp2_bm_update_mtu(dev, mtu);
|
|
if (!err) {
|
|
port->pkt_size = MVPP2_RX_PKT_SIZE(mtu);
|
|
goto out_start;
|
|
}
|
|
|
|
/* Reconfigure BM to the original MTU */
|
|
err = mvpp2_bm_update_mtu(dev, dev->mtu);
|
|
if (err)
|
|
goto error;
|
|
|
|
out_start:
|
|
mvpp2_start_dev(port);
|
|
mvpp2_egress_enable(port);
|
|
mvpp2_ingress_enable(port);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
netdev_err(dev, "fail to change MTU\n");
|
|
return err;
|
|
}
|
|
|
|
static struct rtnl_link_stats64 *
|
|
mvpp2_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
unsigned int start;
|
|
int cpu;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
struct mvpp2_pcpu_stats *cpu_stats;
|
|
u64 rx_packets;
|
|
u64 rx_bytes;
|
|
u64 tx_packets;
|
|
u64 tx_bytes;
|
|
|
|
cpu_stats = per_cpu_ptr(port->stats, cpu);
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
|
|
rx_packets = cpu_stats->rx_packets;
|
|
rx_bytes = cpu_stats->rx_bytes;
|
|
tx_packets = cpu_stats->tx_packets;
|
|
tx_bytes = cpu_stats->tx_bytes;
|
|
} while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
|
|
|
|
stats->rx_packets += rx_packets;
|
|
stats->rx_bytes += rx_bytes;
|
|
stats->tx_packets += tx_packets;
|
|
stats->tx_bytes += tx_bytes;
|
|
}
|
|
|
|
stats->rx_errors = dev->stats.rx_errors;
|
|
stats->rx_dropped = dev->stats.rx_dropped;
|
|
stats->tx_dropped = dev->stats.tx_dropped;
|
|
|
|
return stats;
|
|
}
|
|
|
|
static int mvpp2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
int ret;
|
|
|
|
if (!port->phy_dev)
|
|
return -ENOTSUPP;
|
|
|
|
ret = phy_mii_ioctl(port->phy_dev, ifr, cmd);
|
|
if (!ret)
|
|
mvpp2_link_event(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Ethtool methods */
|
|
|
|
/* Get settings (phy address, speed) for ethtools */
|
|
static int mvpp2_ethtool_get_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
|
|
if (!port->phy_dev)
|
|
return -ENODEV;
|
|
return phy_ethtool_gset(port->phy_dev, cmd);
|
|
}
|
|
|
|
/* Set settings (phy address, speed) for ethtools */
|
|
static int mvpp2_ethtool_set_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
|
|
if (!port->phy_dev)
|
|
return -ENODEV;
|
|
return phy_ethtool_sset(port->phy_dev, cmd);
|
|
}
|
|
|
|
/* Set interrupt coalescing for ethtools */
|
|
static int mvpp2_ethtool_set_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *c)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
int queue;
|
|
|
|
for (queue = 0; queue < rxq_number; queue++) {
|
|
struct mvpp2_rx_queue *rxq = port->rxqs[queue];
|
|
|
|
rxq->time_coal = c->rx_coalesce_usecs;
|
|
rxq->pkts_coal = c->rx_max_coalesced_frames;
|
|
mvpp2_rx_pkts_coal_set(port, rxq, rxq->pkts_coal);
|
|
mvpp2_rx_time_coal_set(port, rxq, rxq->time_coal);
|
|
}
|
|
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
struct mvpp2_tx_queue *txq = port->txqs[queue];
|
|
|
|
txq->done_pkts_coal = c->tx_max_coalesced_frames;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* get coalescing for ethtools */
|
|
static int mvpp2_ethtool_get_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *c)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
|
|
c->rx_coalesce_usecs = port->rxqs[0]->time_coal;
|
|
c->rx_max_coalesced_frames = port->rxqs[0]->pkts_coal;
|
|
c->tx_max_coalesced_frames = port->txqs[0]->done_pkts_coal;
|
|
return 0;
|
|
}
|
|
|
|
static void mvpp2_ethtool_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
strlcpy(drvinfo->driver, MVPP2_DRIVER_NAME,
|
|
sizeof(drvinfo->driver));
|
|
strlcpy(drvinfo->version, MVPP2_DRIVER_VERSION,
|
|
sizeof(drvinfo->version));
|
|
strlcpy(drvinfo->bus_info, dev_name(&dev->dev),
|
|
sizeof(drvinfo->bus_info));
|
|
}
|
|
|
|
static void mvpp2_ethtool_get_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ring)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
|
|
ring->rx_max_pending = MVPP2_MAX_RXD;
|
|
ring->tx_max_pending = MVPP2_MAX_TXD;
|
|
ring->rx_pending = port->rx_ring_size;
|
|
ring->tx_pending = port->tx_ring_size;
|
|
}
|
|
|
|
static int mvpp2_ethtool_set_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *ring)
|
|
{
|
|
struct mvpp2_port *port = netdev_priv(dev);
|
|
u16 prev_rx_ring_size = port->rx_ring_size;
|
|
u16 prev_tx_ring_size = port->tx_ring_size;
|
|
int err;
|
|
|
|
err = mvpp2_check_ringparam_valid(dev, ring);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!netif_running(dev)) {
|
|
port->rx_ring_size = ring->rx_pending;
|
|
port->tx_ring_size = ring->tx_pending;
|
|
return 0;
|
|
}
|
|
|
|
/* The interface is running, so we have to force a
|
|
* reallocation of the queues
|
|
*/
|
|
mvpp2_stop_dev(port);
|
|
mvpp2_cleanup_rxqs(port);
|
|
mvpp2_cleanup_txqs(port);
|
|
|
|
port->rx_ring_size = ring->rx_pending;
|
|
port->tx_ring_size = ring->tx_pending;
|
|
|
|
err = mvpp2_setup_rxqs(port);
|
|
if (err) {
|
|
/* Reallocate Rx queues with the original ring size */
|
|
port->rx_ring_size = prev_rx_ring_size;
|
|
ring->rx_pending = prev_rx_ring_size;
|
|
err = mvpp2_setup_rxqs(port);
|
|
if (err)
|
|
goto err_out;
|
|
}
|
|
err = mvpp2_setup_txqs(port);
|
|
if (err) {
|
|
/* Reallocate Tx queues with the original ring size */
|
|
port->tx_ring_size = prev_tx_ring_size;
|
|
ring->tx_pending = prev_tx_ring_size;
|
|
err = mvpp2_setup_txqs(port);
|
|
if (err)
|
|
goto err_clean_rxqs;
|
|
}
|
|
|
|
mvpp2_start_dev(port);
|
|
mvpp2_egress_enable(port);
|
|
mvpp2_ingress_enable(port);
|
|
|
|
return 0;
|
|
|
|
err_clean_rxqs:
|
|
mvpp2_cleanup_rxqs(port);
|
|
err_out:
|
|
netdev_err(dev, "fail to change ring parameters");
|
|
return err;
|
|
}
|
|
|
|
/* Device ops */
|
|
|
|
static const struct net_device_ops mvpp2_netdev_ops = {
|
|
.ndo_open = mvpp2_open,
|
|
.ndo_stop = mvpp2_stop,
|
|
.ndo_start_xmit = mvpp2_tx,
|
|
.ndo_set_rx_mode = mvpp2_set_rx_mode,
|
|
.ndo_set_mac_address = mvpp2_set_mac_address,
|
|
.ndo_change_mtu = mvpp2_change_mtu,
|
|
.ndo_get_stats64 = mvpp2_get_stats64,
|
|
.ndo_do_ioctl = mvpp2_ioctl,
|
|
};
|
|
|
|
static const struct ethtool_ops mvpp2_eth_tool_ops = {
|
|
.get_link = ethtool_op_get_link,
|
|
.get_settings = mvpp2_ethtool_get_settings,
|
|
.set_settings = mvpp2_ethtool_set_settings,
|
|
.set_coalesce = mvpp2_ethtool_set_coalesce,
|
|
.get_coalesce = mvpp2_ethtool_get_coalesce,
|
|
.get_drvinfo = mvpp2_ethtool_get_drvinfo,
|
|
.get_ringparam = mvpp2_ethtool_get_ringparam,
|
|
.set_ringparam = mvpp2_ethtool_set_ringparam,
|
|
};
|
|
|
|
/* Driver initialization */
|
|
|
|
static void mvpp2_port_power_up(struct mvpp2_port *port)
|
|
{
|
|
mvpp2_port_mii_set(port);
|
|
mvpp2_port_periodic_xon_disable(port);
|
|
mvpp2_port_fc_adv_enable(port);
|
|
mvpp2_port_reset(port);
|
|
}
|
|
|
|
/* Initialize port HW */
|
|
static int mvpp2_port_init(struct mvpp2_port *port)
|
|
{
|
|
struct device *dev = port->dev->dev.parent;
|
|
struct mvpp2 *priv = port->priv;
|
|
struct mvpp2_txq_pcpu *txq_pcpu;
|
|
int queue, cpu, err;
|
|
|
|
if (port->first_rxq + rxq_number > MVPP2_RXQ_TOTAL_NUM)
|
|
return -EINVAL;
|
|
|
|
/* Disable port */
|
|
mvpp2_egress_disable(port);
|
|
mvpp2_port_disable(port);
|
|
|
|
port->txqs = devm_kcalloc(dev, txq_number, sizeof(*port->txqs),
|
|
GFP_KERNEL);
|
|
if (!port->txqs)
|
|
return -ENOMEM;
|
|
|
|
/* Associate physical Tx queues to this port and initialize.
|
|
* The mapping is predefined.
|
|
*/
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
int queue_phy_id = mvpp2_txq_phys(port->id, queue);
|
|
struct mvpp2_tx_queue *txq;
|
|
|
|
txq = devm_kzalloc(dev, sizeof(*txq), GFP_KERNEL);
|
|
if (!txq)
|
|
return -ENOMEM;
|
|
|
|
txq->pcpu = alloc_percpu(struct mvpp2_txq_pcpu);
|
|
if (!txq->pcpu) {
|
|
err = -ENOMEM;
|
|
goto err_free_percpu;
|
|
}
|
|
|
|
txq->id = queue_phy_id;
|
|
txq->log_id = queue;
|
|
txq->done_pkts_coal = MVPP2_TXDONE_COAL_PKTS_THRESH;
|
|
for_each_present_cpu(cpu) {
|
|
txq_pcpu = per_cpu_ptr(txq->pcpu, cpu);
|
|
txq_pcpu->cpu = cpu;
|
|
}
|
|
|
|
port->txqs[queue] = txq;
|
|
}
|
|
|
|
port->rxqs = devm_kcalloc(dev, rxq_number, sizeof(*port->rxqs),
|
|
GFP_KERNEL);
|
|
if (!port->rxqs) {
|
|
err = -ENOMEM;
|
|
goto err_free_percpu;
|
|
}
|
|
|
|
/* Allocate and initialize Rx queue for this port */
|
|
for (queue = 0; queue < rxq_number; queue++) {
|
|
struct mvpp2_rx_queue *rxq;
|
|
|
|
/* Map physical Rx queue to port's logical Rx queue */
|
|
rxq = devm_kzalloc(dev, sizeof(*rxq), GFP_KERNEL);
|
|
if (!rxq)
|
|
goto err_free_percpu;
|
|
/* Map this Rx queue to a physical queue */
|
|
rxq->id = port->first_rxq + queue;
|
|
rxq->port = port->id;
|
|
rxq->logic_rxq = queue;
|
|
|
|
port->rxqs[queue] = rxq;
|
|
}
|
|
|
|
/* Configure Rx queue group interrupt for this port */
|
|
mvpp2_write(priv, MVPP2_ISR_RXQ_GROUP_REG(port->id), rxq_number);
|
|
|
|
/* Create Rx descriptor rings */
|
|
for (queue = 0; queue < rxq_number; queue++) {
|
|
struct mvpp2_rx_queue *rxq = port->rxqs[queue];
|
|
|
|
rxq->size = port->rx_ring_size;
|
|
rxq->pkts_coal = MVPP2_RX_COAL_PKTS;
|
|
rxq->time_coal = MVPP2_RX_COAL_USEC;
|
|
}
|
|
|
|
mvpp2_ingress_disable(port);
|
|
|
|
/* Port default configuration */
|
|
mvpp2_defaults_set(port);
|
|
|
|
/* Port's classifier configuration */
|
|
mvpp2_cls_oversize_rxq_set(port);
|
|
mvpp2_cls_port_config(port);
|
|
|
|
/* Provide an initial Rx packet size */
|
|
port->pkt_size = MVPP2_RX_PKT_SIZE(port->dev->mtu);
|
|
|
|
/* Initialize pools for swf */
|
|
err = mvpp2_swf_bm_pool_init(port);
|
|
if (err)
|
|
goto err_free_percpu;
|
|
|
|
return 0;
|
|
|
|
err_free_percpu:
|
|
for (queue = 0; queue < txq_number; queue++) {
|
|
if (!port->txqs[queue])
|
|
continue;
|
|
free_percpu(port->txqs[queue]->pcpu);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/* Ports initialization */
|
|
static int mvpp2_port_probe(struct platform_device *pdev,
|
|
struct device_node *port_node,
|
|
struct mvpp2 *priv,
|
|
int *next_first_rxq)
|
|
{
|
|
struct device_node *phy_node;
|
|
struct mvpp2_port *port;
|
|
struct mvpp2_port_pcpu *port_pcpu;
|
|
struct net_device *dev;
|
|
struct resource *res;
|
|
const char *dt_mac_addr;
|
|
const char *mac_from;
|
|
char hw_mac_addr[ETH_ALEN];
|
|
u32 id;
|
|
int features;
|
|
int phy_mode;
|
|
int priv_common_regs_num = 2;
|
|
int err, i, cpu;
|
|
|
|
dev = alloc_etherdev_mqs(sizeof(struct mvpp2_port), txq_number,
|
|
rxq_number);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
phy_node = of_parse_phandle(port_node, "phy", 0);
|
|
if (!phy_node) {
|
|
dev_err(&pdev->dev, "missing phy\n");
|
|
err = -ENODEV;
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
phy_mode = of_get_phy_mode(port_node);
|
|
if (phy_mode < 0) {
|
|
dev_err(&pdev->dev, "incorrect phy mode\n");
|
|
err = phy_mode;
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
if (of_property_read_u32(port_node, "port-id", &id)) {
|
|
err = -EINVAL;
|
|
dev_err(&pdev->dev, "missing port-id value\n");
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
dev->tx_queue_len = MVPP2_MAX_TXD;
|
|
dev->watchdog_timeo = 5 * HZ;
|
|
dev->netdev_ops = &mvpp2_netdev_ops;
|
|
dev->ethtool_ops = &mvpp2_eth_tool_ops;
|
|
|
|
port = netdev_priv(dev);
|
|
|
|
port->irq = irq_of_parse_and_map(port_node, 0);
|
|
if (port->irq <= 0) {
|
|
err = -EINVAL;
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
if (of_property_read_bool(port_node, "marvell,loopback"))
|
|
port->flags |= MVPP2_F_LOOPBACK;
|
|
|
|
port->priv = priv;
|
|
port->id = id;
|
|
port->first_rxq = *next_first_rxq;
|
|
port->phy_node = phy_node;
|
|
port->phy_interface = phy_mode;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM,
|
|
priv_common_regs_num + id);
|
|
port->base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(port->base)) {
|
|
err = PTR_ERR(port->base);
|
|
goto err_free_irq;
|
|
}
|
|
|
|
/* Alloc per-cpu stats */
|
|
port->stats = netdev_alloc_pcpu_stats(struct mvpp2_pcpu_stats);
|
|
if (!port->stats) {
|
|
err = -ENOMEM;
|
|
goto err_free_irq;
|
|
}
|
|
|
|
dt_mac_addr = of_get_mac_address(port_node);
|
|
if (dt_mac_addr && is_valid_ether_addr(dt_mac_addr)) {
|
|
mac_from = "device tree";
|
|
ether_addr_copy(dev->dev_addr, dt_mac_addr);
|
|
} else {
|
|
mvpp2_get_mac_address(port, hw_mac_addr);
|
|
if (is_valid_ether_addr(hw_mac_addr)) {
|
|
mac_from = "hardware";
|
|
ether_addr_copy(dev->dev_addr, hw_mac_addr);
|
|
} else {
|
|
mac_from = "random";
|
|
eth_hw_addr_random(dev);
|
|
}
|
|
}
|
|
|
|
port->tx_ring_size = MVPP2_MAX_TXD;
|
|
port->rx_ring_size = MVPP2_MAX_RXD;
|
|
port->dev = dev;
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
err = mvpp2_port_init(port);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to init port %d\n", id);
|
|
goto err_free_stats;
|
|
}
|
|
mvpp2_port_power_up(port);
|
|
|
|
port->pcpu = alloc_percpu(struct mvpp2_port_pcpu);
|
|
if (!port->pcpu) {
|
|
err = -ENOMEM;
|
|
goto err_free_txq_pcpu;
|
|
}
|
|
|
|
for_each_present_cpu(cpu) {
|
|
port_pcpu = per_cpu_ptr(port->pcpu, cpu);
|
|
|
|
hrtimer_init(&port_pcpu->tx_done_timer, CLOCK_MONOTONIC,
|
|
HRTIMER_MODE_REL_PINNED);
|
|
port_pcpu->tx_done_timer.function = mvpp2_hr_timer_cb;
|
|
port_pcpu->timer_scheduled = false;
|
|
|
|
tasklet_init(&port_pcpu->tx_done_tasklet, mvpp2_tx_proc_cb,
|
|
(unsigned long)dev);
|
|
}
|
|
|
|
netif_napi_add(dev, &port->napi, mvpp2_poll, NAPI_POLL_WEIGHT);
|
|
features = NETIF_F_SG | NETIF_F_IP_CSUM;
|
|
dev->features = features | NETIF_F_RXCSUM;
|
|
dev->hw_features |= features | NETIF_F_RXCSUM | NETIF_F_GRO;
|
|
dev->vlan_features |= features;
|
|
|
|
err = register_netdev(dev);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to register netdev\n");
|
|
goto err_free_port_pcpu;
|
|
}
|
|
netdev_info(dev, "Using %s mac address %pM\n", mac_from, dev->dev_addr);
|
|
|
|
/* Increment the first Rx queue number to be used by the next port */
|
|
*next_first_rxq += rxq_number;
|
|
priv->port_list[id] = port;
|
|
return 0;
|
|
|
|
err_free_port_pcpu:
|
|
free_percpu(port->pcpu);
|
|
err_free_txq_pcpu:
|
|
for (i = 0; i < txq_number; i++)
|
|
free_percpu(port->txqs[i]->pcpu);
|
|
err_free_stats:
|
|
free_percpu(port->stats);
|
|
err_free_irq:
|
|
irq_dispose_mapping(port->irq);
|
|
err_free_netdev:
|
|
free_netdev(dev);
|
|
return err;
|
|
}
|
|
|
|
/* Ports removal routine */
|
|
static void mvpp2_port_remove(struct mvpp2_port *port)
|
|
{
|
|
int i;
|
|
|
|
unregister_netdev(port->dev);
|
|
free_percpu(port->pcpu);
|
|
free_percpu(port->stats);
|
|
for (i = 0; i < txq_number; i++)
|
|
free_percpu(port->txqs[i]->pcpu);
|
|
irq_dispose_mapping(port->irq);
|
|
free_netdev(port->dev);
|
|
}
|
|
|
|
/* Initialize decoding windows */
|
|
static void mvpp2_conf_mbus_windows(const struct mbus_dram_target_info *dram,
|
|
struct mvpp2 *priv)
|
|
{
|
|
u32 win_enable;
|
|
int i;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
mvpp2_write(priv, MVPP2_WIN_BASE(i), 0);
|
|
mvpp2_write(priv, MVPP2_WIN_SIZE(i), 0);
|
|
|
|
if (i < 4)
|
|
mvpp2_write(priv, MVPP2_WIN_REMAP(i), 0);
|
|
}
|
|
|
|
win_enable = 0;
|
|
|
|
for (i = 0; i < dram->num_cs; i++) {
|
|
const struct mbus_dram_window *cs = dram->cs + i;
|
|
|
|
mvpp2_write(priv, MVPP2_WIN_BASE(i),
|
|
(cs->base & 0xffff0000) | (cs->mbus_attr << 8) |
|
|
dram->mbus_dram_target_id);
|
|
|
|
mvpp2_write(priv, MVPP2_WIN_SIZE(i),
|
|
(cs->size - 1) & 0xffff0000);
|
|
|
|
win_enable |= (1 << i);
|
|
}
|
|
|
|
mvpp2_write(priv, MVPP2_BASE_ADDR_ENABLE, win_enable);
|
|
}
|
|
|
|
/* Initialize Rx FIFO's */
|
|
static void mvpp2_rx_fifo_init(struct mvpp2 *priv)
|
|
{
|
|
int port;
|
|
|
|
for (port = 0; port < MVPP2_MAX_PORTS; port++) {
|
|
mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port),
|
|
MVPP2_RX_FIFO_PORT_DATA_SIZE);
|
|
mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
|
|
MVPP2_RX_FIFO_PORT_ATTR_SIZE);
|
|
}
|
|
|
|
mvpp2_write(priv, MVPP2_RX_MIN_PKT_SIZE_REG,
|
|
MVPP2_RX_FIFO_PORT_MIN_PKT);
|
|
mvpp2_write(priv, MVPP2_RX_FIFO_INIT_REG, 0x1);
|
|
}
|
|
|
|
/* Initialize network controller common part HW */
|
|
static int mvpp2_init(struct platform_device *pdev, struct mvpp2 *priv)
|
|
{
|
|
const struct mbus_dram_target_info *dram_target_info;
|
|
int err, i;
|
|
u32 val;
|
|
|
|
/* Checks for hardware constraints */
|
|
if (rxq_number % 4 || (rxq_number > MVPP2_MAX_RXQ) ||
|
|
(txq_number > MVPP2_MAX_TXQ)) {
|
|
dev_err(&pdev->dev, "invalid queue size parameter\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* MBUS windows configuration */
|
|
dram_target_info = mv_mbus_dram_info();
|
|
if (dram_target_info)
|
|
mvpp2_conf_mbus_windows(dram_target_info, priv);
|
|
|
|
/* Disable HW PHY polling */
|
|
val = readl(priv->lms_base + MVPP2_PHY_AN_CFG0_REG);
|
|
val |= MVPP2_PHY_AN_STOP_SMI0_MASK;
|
|
writel(val, priv->lms_base + MVPP2_PHY_AN_CFG0_REG);
|
|
|
|
/* Allocate and initialize aggregated TXQs */
|
|
priv->aggr_txqs = devm_kcalloc(&pdev->dev, num_present_cpus(),
|
|
sizeof(struct mvpp2_tx_queue),
|
|
GFP_KERNEL);
|
|
if (!priv->aggr_txqs)
|
|
return -ENOMEM;
|
|
|
|
for_each_present_cpu(i) {
|
|
priv->aggr_txqs[i].id = i;
|
|
priv->aggr_txqs[i].size = MVPP2_AGGR_TXQ_SIZE;
|
|
err = mvpp2_aggr_txq_init(pdev, &priv->aggr_txqs[i],
|
|
MVPP2_AGGR_TXQ_SIZE, i, priv);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
/* Rx Fifo Init */
|
|
mvpp2_rx_fifo_init(priv);
|
|
|
|
/* Reset Rx queue group interrupt configuration */
|
|
for (i = 0; i < MVPP2_MAX_PORTS; i++)
|
|
mvpp2_write(priv, MVPP2_ISR_RXQ_GROUP_REG(i), rxq_number);
|
|
|
|
writel(MVPP2_EXT_GLOBAL_CTRL_DEFAULT,
|
|
priv->lms_base + MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG);
|
|
|
|
/* Allow cache snoop when transmiting packets */
|
|
mvpp2_write(priv, MVPP2_TX_SNOOP_REG, 0x1);
|
|
|
|
/* Buffer Manager initialization */
|
|
err = mvpp2_bm_init(pdev, priv);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Parser default initialization */
|
|
err = mvpp2_prs_default_init(pdev, priv);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* Classifier default initialization */
|
|
mvpp2_cls_init(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mvpp2_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *dn = pdev->dev.of_node;
|
|
struct device_node *port_node;
|
|
struct mvpp2 *priv;
|
|
struct resource *res;
|
|
int port_count, first_rxq;
|
|
int err;
|
|
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(struct mvpp2), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
priv->base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(priv->base))
|
|
return PTR_ERR(priv->base);
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
priv->lms_base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(priv->lms_base))
|
|
return PTR_ERR(priv->lms_base);
|
|
|
|
priv->pp_clk = devm_clk_get(&pdev->dev, "pp_clk");
|
|
if (IS_ERR(priv->pp_clk))
|
|
return PTR_ERR(priv->pp_clk);
|
|
err = clk_prepare_enable(priv->pp_clk);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
priv->gop_clk = devm_clk_get(&pdev->dev, "gop_clk");
|
|
if (IS_ERR(priv->gop_clk)) {
|
|
err = PTR_ERR(priv->gop_clk);
|
|
goto err_pp_clk;
|
|
}
|
|
err = clk_prepare_enable(priv->gop_clk);
|
|
if (err < 0)
|
|
goto err_pp_clk;
|
|
|
|
/* Get system's tclk rate */
|
|
priv->tclk = clk_get_rate(priv->pp_clk);
|
|
|
|
/* Initialize network controller */
|
|
err = mvpp2_init(pdev, priv);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "failed to initialize controller\n");
|
|
goto err_gop_clk;
|
|
}
|
|
|
|
port_count = of_get_available_child_count(dn);
|
|
if (port_count == 0) {
|
|
dev_err(&pdev->dev, "no ports enabled\n");
|
|
err = -ENODEV;
|
|
goto err_gop_clk;
|
|
}
|
|
|
|
priv->port_list = devm_kcalloc(&pdev->dev, port_count,
|
|
sizeof(struct mvpp2_port *),
|
|
GFP_KERNEL);
|
|
if (!priv->port_list) {
|
|
err = -ENOMEM;
|
|
goto err_gop_clk;
|
|
}
|
|
|
|
/* Initialize ports */
|
|
first_rxq = 0;
|
|
for_each_available_child_of_node(dn, port_node) {
|
|
err = mvpp2_port_probe(pdev, port_node, priv, &first_rxq);
|
|
if (err < 0)
|
|
goto err_gop_clk;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
return 0;
|
|
|
|
err_gop_clk:
|
|
clk_disable_unprepare(priv->gop_clk);
|
|
err_pp_clk:
|
|
clk_disable_unprepare(priv->pp_clk);
|
|
return err;
|
|
}
|
|
|
|
static int mvpp2_remove(struct platform_device *pdev)
|
|
{
|
|
struct mvpp2 *priv = platform_get_drvdata(pdev);
|
|
struct device_node *dn = pdev->dev.of_node;
|
|
struct device_node *port_node;
|
|
int i = 0;
|
|
|
|
for_each_available_child_of_node(dn, port_node) {
|
|
if (priv->port_list[i])
|
|
mvpp2_port_remove(priv->port_list[i]);
|
|
i++;
|
|
}
|
|
|
|
for (i = 0; i < MVPP2_BM_POOLS_NUM; i++) {
|
|
struct mvpp2_bm_pool *bm_pool = &priv->bm_pools[i];
|
|
|
|
mvpp2_bm_pool_destroy(pdev, priv, bm_pool);
|
|
}
|
|
|
|
for_each_present_cpu(i) {
|
|
struct mvpp2_tx_queue *aggr_txq = &priv->aggr_txqs[i];
|
|
|
|
dma_free_coherent(&pdev->dev,
|
|
MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE,
|
|
aggr_txq->descs,
|
|
aggr_txq->descs_phys);
|
|
}
|
|
|
|
clk_disable_unprepare(priv->pp_clk);
|
|
clk_disable_unprepare(priv->gop_clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id mvpp2_match[] = {
|
|
{ .compatible = "marvell,armada-375-pp2" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mvpp2_match);
|
|
|
|
static struct platform_driver mvpp2_driver = {
|
|
.probe = mvpp2_probe,
|
|
.remove = mvpp2_remove,
|
|
.driver = {
|
|
.name = MVPP2_DRIVER_NAME,
|
|
.of_match_table = mvpp2_match,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(mvpp2_driver);
|
|
|
|
MODULE_DESCRIPTION("Marvell PPv2 Ethernet Driver - www.marvell.com");
|
|
MODULE_AUTHOR("Marcin Wojtas <mw@semihalf.com>");
|
|
MODULE_LICENSE("GPL v2");
|