/* * Driver for Marvell PPv2 network controller for Armada 375 SoC. * * Copyright (C) 2014 Marvell * * Marcin Wojtas * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* RX Fifo Registers */ #define MVPP2_RX_DATA_FIFO_SIZE_REG(port) (0x00 + 4 * (port)) #define MVPP2_RX_ATTR_FIFO_SIZE_REG(port) (0x20 + 4 * (port)) #define MVPP2_RX_MIN_PKT_SIZE_REG 0x60 #define MVPP2_RX_FIFO_INIT_REG 0x64 /* RX DMA Top Registers */ #define MVPP2_RX_CTRL_REG(port) (0x140 + 4 * (port)) #define MVPP2_RX_LOW_LATENCY_PKT_SIZE(s) (((s) & 0xfff) << 16) #define MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK BIT(31) #define MVPP2_POOL_BUF_SIZE_REG(pool) (0x180 + 4 * (pool)) #define MVPP2_POOL_BUF_SIZE_OFFSET 5 #define MVPP2_RXQ_CONFIG_REG(rxq) (0x800 + 4 * (rxq)) #define MVPP2_SNOOP_PKT_SIZE_MASK 0x1ff #define MVPP2_SNOOP_BUF_HDR_MASK BIT(9) #define MVPP2_RXQ_POOL_SHORT_OFFS 20 #define MVPP2_RXQ_POOL_SHORT_MASK 0x700000 #define MVPP2_RXQ_POOL_LONG_OFFS 24 #define MVPP2_RXQ_POOL_LONG_MASK 0x7000000 #define MVPP2_RXQ_PACKET_OFFSET_OFFS 28 #define MVPP2_RXQ_PACKET_OFFSET_MASK 0x70000000 #define MVPP2_RXQ_DISABLE_MASK BIT(31) /* Parser Registers */ #define MVPP2_PRS_INIT_LOOKUP_REG 0x1000 #define MVPP2_PRS_PORT_LU_MAX 0xf #define MVPP2_PRS_PORT_LU_MASK(port) (0xff << ((port) * 4)) #define MVPP2_PRS_PORT_LU_VAL(port, val) ((val) << ((port) * 4)) #define MVPP2_PRS_INIT_OFFS_REG(port) (0x1004 + ((port) & 4)) #define MVPP2_PRS_INIT_OFF_MASK(port) (0x3f << (((port) % 4) * 8)) #define MVPP2_PRS_INIT_OFF_VAL(port, val) ((val) << (((port) % 4) * 8)) #define MVPP2_PRS_MAX_LOOP_REG(port) (0x100c + ((port) & 4)) #define MVPP2_PRS_MAX_LOOP_MASK(port) (0xff << (((port) % 4) * 8)) #define MVPP2_PRS_MAX_LOOP_VAL(port, val) ((val) << (((port) % 4) * 8)) #define MVPP2_PRS_TCAM_IDX_REG 0x1100 #define MVPP2_PRS_TCAM_DATA_REG(idx) (0x1104 + (idx) * 4) #define MVPP2_PRS_TCAM_INV_MASK BIT(31) #define MVPP2_PRS_SRAM_IDX_REG 0x1200 #define MVPP2_PRS_SRAM_DATA_REG(idx) (0x1204 + (idx) * 4) #define MVPP2_PRS_TCAM_CTRL_REG 0x1230 #define MVPP2_PRS_TCAM_EN_MASK BIT(0) /* Classifier Registers */ #define MVPP2_CLS_MODE_REG 0x1800 #define MVPP2_CLS_MODE_ACTIVE_MASK BIT(0) #define MVPP2_CLS_PORT_WAY_REG 0x1810 #define MVPP2_CLS_PORT_WAY_MASK(port) (1 << (port)) #define MVPP2_CLS_LKP_INDEX_REG 0x1814 #define MVPP2_CLS_LKP_INDEX_WAY_OFFS 6 #define MVPP2_CLS_LKP_TBL_REG 0x1818 #define MVPP2_CLS_LKP_TBL_RXQ_MASK 0xff #define MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK BIT(25) #define MVPP2_CLS_FLOW_INDEX_REG 0x1820 #define MVPP2_CLS_FLOW_TBL0_REG 0x1824 #define MVPP2_CLS_FLOW_TBL1_REG 0x1828 #define MVPP2_CLS_FLOW_TBL2_REG 0x182c #define MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port) (0x1980 + ((port) * 4)) #define MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS 3 #define MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK 0x7 #define MVPP2_CLS_SWFWD_P2HQ_REG(port) (0x19b0 + ((port) * 4)) #define MVPP2_CLS_SWFWD_PCTRL_REG 0x19d0 #define MVPP2_CLS_SWFWD_PCTRL_MASK(port) (1 << (port)) /* Descriptor Manager Top Registers */ #define MVPP2_RXQ_NUM_REG 0x2040 #define MVPP2_RXQ_DESC_ADDR_REG 0x2044 #define MVPP2_RXQ_DESC_SIZE_REG 0x2048 #define MVPP2_RXQ_DESC_SIZE_MASK 0x3ff0 #define MVPP2_RXQ_STATUS_UPDATE_REG(rxq) (0x3000 + 4 * (rxq)) #define MVPP2_RXQ_NUM_PROCESSED_OFFSET 0 #define MVPP2_RXQ_NUM_NEW_OFFSET 16 #define MVPP2_RXQ_STATUS_REG(rxq) (0x3400 + 4 * (rxq)) #define MVPP2_RXQ_OCCUPIED_MASK 0x3fff #define MVPP2_RXQ_NON_OCCUPIED_OFFSET 16 #define MVPP2_RXQ_NON_OCCUPIED_MASK 0x3fff0000 #define MVPP2_RXQ_THRESH_REG 0x204c #define MVPP2_OCCUPIED_THRESH_OFFSET 0 #define MVPP2_OCCUPIED_THRESH_MASK 0x3fff #define MVPP2_RXQ_INDEX_REG 0x2050 #define MVPP2_TXQ_NUM_REG 0x2080 #define MVPP2_TXQ_DESC_ADDR_REG 0x2084 #define MVPP2_TXQ_DESC_SIZE_REG 0x2088 #define MVPP2_TXQ_DESC_SIZE_MASK 0x3ff0 #define MVPP2_AGGR_TXQ_UPDATE_REG 0x2090 #define MVPP2_TXQ_THRESH_REG 0x2094 #define MVPP2_TRANSMITTED_THRESH_OFFSET 16 #define MVPP2_TRANSMITTED_THRESH_MASK 0x3fff0000 #define MVPP2_TXQ_INDEX_REG 0x2098 #define MVPP2_TXQ_PREF_BUF_REG 0x209c #define MVPP2_PREF_BUF_PTR(desc) ((desc) & 0xfff) #define MVPP2_PREF_BUF_SIZE_4 (BIT(12) | BIT(13)) #define MVPP2_PREF_BUF_SIZE_16 (BIT(12) | BIT(14)) #define MVPP2_PREF_BUF_THRESH(val) ((val) << 17) #define MVPP2_TXQ_DRAIN_EN_MASK BIT(31) #define MVPP2_TXQ_PENDING_REG 0x20a0 #define MVPP2_TXQ_PENDING_MASK 0x3fff #define MVPP2_TXQ_INT_STATUS_REG 0x20a4 #define MVPP2_TXQ_SENT_REG(txq) (0x3c00 + 4 * (txq)) #define MVPP2_TRANSMITTED_COUNT_OFFSET 16 #define MVPP2_TRANSMITTED_COUNT_MASK 0x3fff0000 #define MVPP2_TXQ_RSVD_REQ_REG 0x20b0 #define MVPP2_TXQ_RSVD_REQ_Q_OFFSET 16 #define MVPP2_TXQ_RSVD_RSLT_REG 0x20b4 #define MVPP2_TXQ_RSVD_RSLT_MASK 0x3fff #define MVPP2_TXQ_RSVD_CLR_REG 0x20b8 #define MVPP2_TXQ_RSVD_CLR_OFFSET 16 #define MVPP2_AGGR_TXQ_DESC_ADDR_REG(cpu) (0x2100 + 4 * (cpu)) #define MVPP2_AGGR_TXQ_DESC_SIZE_REG(cpu) (0x2140 + 4 * (cpu)) #define MVPP2_AGGR_TXQ_DESC_SIZE_MASK 0x3ff0 #define MVPP2_AGGR_TXQ_STATUS_REG(cpu) (0x2180 + 4 * (cpu)) #define MVPP2_AGGR_TXQ_PENDING_MASK 0x3fff #define MVPP2_AGGR_TXQ_INDEX_REG(cpu) (0x21c0 + 4 * (cpu)) /* MBUS bridge registers */ #define MVPP2_WIN_BASE(w) (0x4000 + ((w) << 2)) #define MVPP2_WIN_SIZE(w) (0x4020 + ((w) << 2)) #define MVPP2_WIN_REMAP(w) (0x4040 + ((w) << 2)) #define MVPP2_BASE_ADDR_ENABLE 0x4060 /* Interrupt Cause and Mask registers */ #define MVPP2_ISR_RX_THRESHOLD_REG(rxq) (0x5200 + 4 * (rxq)) #define MVPP2_ISR_RXQ_GROUP_REG(rxq) (0x5400 + 4 * (rxq)) #define MVPP2_ISR_ENABLE_REG(port) (0x5420 + 4 * (port)) #define MVPP2_ISR_ENABLE_INTERRUPT(mask) ((mask) & 0xffff) #define MVPP2_ISR_DISABLE_INTERRUPT(mask) (((mask) << 16) & 0xffff0000) #define MVPP2_ISR_RX_TX_CAUSE_REG(port) (0x5480 + 4 * (port)) #define MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff #define MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK 0xff0000 #define MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK BIT(24) #define MVPP2_CAUSE_FCS_ERR_MASK BIT(25) #define MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK BIT(26) #define MVPP2_CAUSE_TX_EXCEPTION_SUM_MASK BIT(29) #define MVPP2_CAUSE_RX_EXCEPTION_SUM_MASK BIT(30) #define MVPP2_CAUSE_MISC_SUM_MASK BIT(31) #define MVPP2_ISR_RX_TX_MASK_REG(port) (0x54a0 + 4 * (port)) #define MVPP2_ISR_PON_RX_TX_MASK_REG 0x54bc #define MVPP2_PON_CAUSE_RXQ_OCCUP_DESC_ALL_MASK 0xffff #define MVPP2_PON_CAUSE_TXP_OCCUP_DESC_ALL_MASK 0x3fc00000 #define MVPP2_PON_CAUSE_MISC_SUM_MASK BIT(31) #define MVPP2_ISR_MISC_CAUSE_REG 0x55b0 /* Buffer Manager registers */ #define MVPP2_BM_POOL_BASE_REG(pool) (0x6000 + ((pool) * 4)) #define MVPP2_BM_POOL_BASE_ADDR_MASK 0xfffff80 #define MVPP2_BM_POOL_SIZE_REG(pool) (0x6040 + ((pool) * 4)) #define MVPP2_BM_POOL_SIZE_MASK 0xfff0 #define MVPP2_BM_POOL_READ_PTR_REG(pool) (0x6080 + ((pool) * 4)) #define MVPP2_BM_POOL_GET_READ_PTR_MASK 0xfff0 #define MVPP2_BM_POOL_PTRS_NUM_REG(pool) (0x60c0 + ((pool) * 4)) #define MVPP2_BM_POOL_PTRS_NUM_MASK 0xfff0 #define MVPP2_BM_BPPI_READ_PTR_REG(pool) (0x6100 + ((pool) * 4)) #define MVPP2_BM_BPPI_PTRS_NUM_REG(pool) (0x6140 + ((pool) * 4)) #define MVPP2_BM_BPPI_PTR_NUM_MASK 0x7ff #define MVPP2_BM_BPPI_PREFETCH_FULL_MASK BIT(16) #define MVPP2_BM_POOL_CTRL_REG(pool) (0x6200 + ((pool) * 4)) #define MVPP2_BM_START_MASK BIT(0) #define MVPP2_BM_STOP_MASK BIT(1) #define MVPP2_BM_STATE_MASK BIT(4) #define MVPP2_BM_LOW_THRESH_OFFS 8 #define MVPP2_BM_LOW_THRESH_MASK 0x7f00 #define MVPP2_BM_LOW_THRESH_VALUE(val) ((val) << \ MVPP2_BM_LOW_THRESH_OFFS) #define MVPP2_BM_HIGH_THRESH_OFFS 16 #define MVPP2_BM_HIGH_THRESH_MASK 0x7f0000 #define MVPP2_BM_HIGH_THRESH_VALUE(val) ((val) << \ MVPP2_BM_HIGH_THRESH_OFFS) #define MVPP2_BM_INTR_CAUSE_REG(pool) (0x6240 + ((pool) * 4)) #define MVPP2_BM_RELEASED_DELAY_MASK BIT(0) #define MVPP2_BM_ALLOC_FAILED_MASK BIT(1) #define MVPP2_BM_BPPE_EMPTY_MASK BIT(2) #define MVPP2_BM_BPPE_FULL_MASK BIT(3) #define MVPP2_BM_AVAILABLE_BP_LOW_MASK BIT(4) #define MVPP2_BM_INTR_MASK_REG(pool) (0x6280 + ((pool) * 4)) #define MVPP2_BM_PHY_ALLOC_REG(pool) (0x6400 + ((pool) * 4)) #define MVPP2_BM_PHY_ALLOC_GRNTD_MASK BIT(0) #define MVPP2_BM_VIRT_ALLOC_REG 0x6440 #define MVPP2_BM_PHY_RLS_REG(pool) (0x6480 + ((pool) * 4)) #define MVPP2_BM_PHY_RLS_MC_BUFF_MASK BIT(0) #define MVPP2_BM_PHY_RLS_PRIO_EN_MASK BIT(1) #define MVPP2_BM_PHY_RLS_GRNTD_MASK BIT(2) #define MVPP2_BM_VIRT_RLS_REG 0x64c0 #define MVPP2_BM_MC_RLS_REG 0x64c4 #define MVPP2_BM_MC_ID_MASK 0xfff #define MVPP2_BM_FORCE_RELEASE_MASK BIT(12) /* TX Scheduler registers */ #define MVPP2_TXP_SCHED_PORT_INDEX_REG 0x8000 #define MVPP2_TXP_SCHED_Q_CMD_REG 0x8004 #define MVPP2_TXP_SCHED_ENQ_MASK 0xff #define MVPP2_TXP_SCHED_DISQ_OFFSET 8 #define MVPP2_TXP_SCHED_CMD_1_REG 0x8010 #define MVPP2_TXP_SCHED_PERIOD_REG 0x8018 #define MVPP2_TXP_SCHED_MTU_REG 0x801c #define MVPP2_TXP_MTU_MAX 0x7FFFF #define MVPP2_TXP_SCHED_REFILL_REG 0x8020 #define MVPP2_TXP_REFILL_TOKENS_ALL_MASK 0x7ffff #define MVPP2_TXP_REFILL_PERIOD_ALL_MASK 0x3ff00000 #define MVPP2_TXP_REFILL_PERIOD_MASK(v) ((v) << 20) #define MVPP2_TXP_SCHED_TOKEN_SIZE_REG 0x8024 #define MVPP2_TXP_TOKEN_SIZE_MAX 0xffffffff #define MVPP2_TXQ_SCHED_REFILL_REG(q) (0x8040 + ((q) << 2)) #define MVPP2_TXQ_REFILL_TOKENS_ALL_MASK 0x7ffff #define MVPP2_TXQ_REFILL_PERIOD_ALL_MASK 0x3ff00000 #define MVPP2_TXQ_REFILL_PERIOD_MASK(v) ((v) << 20) #define MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(q) (0x8060 + ((q) << 2)) #define MVPP2_TXQ_TOKEN_SIZE_MAX 0x7fffffff #define MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(q) (0x8080 + ((q) << 2)) #define MVPP2_TXQ_TOKEN_CNTR_MAX 0xffffffff /* TX general registers */ #define MVPP2_TX_SNOOP_REG 0x8800 #define MVPP2_TX_PORT_FLUSH_REG 0x8810 #define MVPP2_TX_PORT_FLUSH_MASK(port) (1 << (port)) /* LMS registers */ #define MVPP2_SRC_ADDR_MIDDLE 0x24 #define MVPP2_SRC_ADDR_HIGH 0x28 #define MVPP2_PHY_AN_CFG0_REG 0x34 #define MVPP2_PHY_AN_STOP_SMI0_MASK BIT(7) #define MVPP2_MIB_COUNTERS_BASE(port) (0x1000 + ((port) >> 1) * \ 0x400 + (port) * 0x400) #define MVPP2_MIB_LATE_COLLISION 0x7c #define MVPP2_ISR_SUM_MASK_REG 0x220c #define MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG 0x305c #define MVPP2_EXT_GLOBAL_CTRL_DEFAULT 0x27 /* Per-port registers */ #define MVPP2_GMAC_CTRL_0_REG 0x0 #define MVPP2_GMAC_PORT_EN_MASK BIT(0) #define MVPP2_GMAC_MAX_RX_SIZE_OFFS 2 #define MVPP2_GMAC_MAX_RX_SIZE_MASK 0x7ffc #define MVPP2_GMAC_MIB_CNTR_EN_MASK BIT(15) #define MVPP2_GMAC_CTRL_1_REG 0x4 #define MVPP2_GMAC_PERIODIC_XON_EN_MASK BIT(1) #define MVPP2_GMAC_GMII_LB_EN_MASK BIT(5) #define MVPP2_GMAC_PCS_LB_EN_BIT 6 #define MVPP2_GMAC_PCS_LB_EN_MASK BIT(6) #define MVPP2_GMAC_SA_LOW_OFFS 7 #define MVPP2_GMAC_CTRL_2_REG 0x8 #define MVPP2_GMAC_INBAND_AN_MASK BIT(0) #define MVPP2_GMAC_PCS_ENABLE_MASK BIT(3) #define MVPP2_GMAC_PORT_RGMII_MASK BIT(4) #define MVPP2_GMAC_PORT_RESET_MASK BIT(6) #define MVPP2_GMAC_AUTONEG_CONFIG 0xc #define MVPP2_GMAC_FORCE_LINK_DOWN BIT(0) #define MVPP2_GMAC_FORCE_LINK_PASS BIT(1) #define MVPP2_GMAC_CONFIG_MII_SPEED BIT(5) #define MVPP2_GMAC_CONFIG_GMII_SPEED BIT(6) #define MVPP2_GMAC_AN_SPEED_EN BIT(7) #define MVPP2_GMAC_FC_ADV_EN BIT(9) #define MVPP2_GMAC_CONFIG_FULL_DUPLEX BIT(12) #define MVPP2_GMAC_AN_DUPLEX_EN BIT(13) #define MVPP2_GMAC_PORT_FIFO_CFG_1_REG 0x1c #define MVPP2_GMAC_TX_FIFO_MIN_TH_OFFS 6 #define MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK 0x1fc0 #define MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(v) (((v) << 6) & \ MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK) #define MVPP2_CAUSE_TXQ_SENT_DESC_ALL_MASK 0xff /* Descriptor ring Macros */ #define MVPP2_QUEUE_NEXT_DESC(q, index) \ (((index) < (q)->last_desc) ? ((index) + 1) : 0) /* Various constants */ /* Coalescing */ #define MVPP2_TXDONE_COAL_PKTS_THRESH 15 #define MVPP2_TXDONE_HRTIMER_PERIOD_NS 1000000UL #define MVPP2_RX_COAL_PKTS 32 #define MVPP2_RX_COAL_USEC 100 /* The two bytes Marvell header. Either contains a special value used * by Marvell switches when a specific hardware mode is enabled (not * supported by this driver) or is filled automatically by zeroes on * the RX side. Those two bytes being at the front of the Ethernet * 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_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, 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; 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; }; struct mvpp2_txq_pcpu_buf { /* Transmitted SKB */ struct sk_buff *skb; /* Physical address of transmitted buffer */ dma_addr_t phys; /* Size transmitted */ size_t size; }; /* 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; /* Infos about transmitted buffers */ struct mvpp2_txq_pcpu_buf *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) { struct mvpp2_txq_pcpu_buf *tx_buf = txq_pcpu->buffs + txq_pcpu->txq_put_index; tx_buf->skb = skb; tx_buf->size = tx_desc->data_size; tx_buf->phys = tx_desc->buf_phys_addr + tx_desc->packet_offset; 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 */ 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 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 -ENOMEM; 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 -EINVAL; } 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, sizeof(fe.data)); 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++) { struct mvpp2_txq_pcpu_buf *tx_buf = txq_pcpu->buffs + txq_pcpu->txq_get_index; dma_unmap_single(port->dev->dev.parent, tx_buf->phys, tx_buf->size, DMA_TO_DEVICE); if (tx_buf->skb) dev_kfree_skb_any(tx_buf->skb); mvpp2_txq_inc_get(txq_pcpu); } } 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; 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; 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; 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->buffs = kmalloc(txq_pcpu->size * sizeof(struct mvpp2_txq_pcpu_buf), GFP_KERNEL); if (!txq_pcpu->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->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->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 = dev->phydev; 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) { struct net_device *ndev = port->dev; 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(ndev->phydev); netif_tx_start_all_queues(port->dev); } /* Set hw internals when stopping port */ static void mvpp2_stop_dev(struct mvpp2_port *port) { struct net_device *ndev = port->dev; /* 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(ndev->phydev); } /* 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->link = 0; port->duplex = 0; port->speed = 0; return 0; } static void mvpp2_phy_disconnect(struct mvpp2_port *port) { struct net_device *ndev = port->dev; phy_disconnect(ndev->phydev); } 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) { int ret; if (!dev->phydev) return -ENOTSUPP; ret = phy_mii_ioctl(dev->phydev, ifr, cmd); if (!ret) mvpp2_link_event(dev); return ret; } /* Ethtool methods */ /* 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, .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, .get_link_ksettings = phy_ethtool_get_link_ksettings, .set_link_ksettings = phy_ethtool_set_link_ksettings, }; /* 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) { err = -ENOMEM; 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: of_node_put(phy_node); free_netdev(dev); return err; } /* Ports removal routine */ static void mvpp2_port_remove(struct mvpp2_port *port) { int i; unregister_netdev(port->dev); of_node_put(port->phy_node); 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 "); MODULE_LICENSE("GPL v2");