/* SPDX-License-Identifier: GPL-2.0 */ /* Marvell Octeon EP (EndPoint) Ethernet Driver * * Copyright (C) 2020 Marvell. * */ #ifndef _OCTEP_CONFIG_H_ #define _OCTEP_CONFIG_H_ /* Tx instruction types by length */ #define OCTEP_32BYTE_INSTR 32 #define OCTEP_64BYTE_INSTR 64 /* Tx Queue: maximum descriptors per ring */ /* This needs to be a power of 2 */ #define OCTEP_IQ_MAX_DESCRIPTORS 1024 /* Minimum input (Tx) requests to be enqueued to ring doorbell */ #define OCTEP_DB_MIN 8 /* Packet threshold for Tx queue interrupt */ #define OCTEP_IQ_INTR_THRESHOLD 0x0 /* Minimum watermark for backpressure */ #define OCTEP_OQ_WMARK_MIN 256 /* Rx Queue: maximum descriptors per ring */ #define OCTEP_OQ_MAX_DESCRIPTORS 1024 /* Rx buffer size: Use page size buffers. * Build skb from allocated page buffer once the packet is received. * When a gathered packet is received, make head page as skb head and * page buffers in consecutive Rx descriptors as fragments. */ #define OCTEP_OQ_BUF_SIZE (SKB_WITH_OVERHEAD(PAGE_SIZE)) #define OCTEP_OQ_PKTS_PER_INTR 128 #define OCTEP_OQ_REFILL_THRESHOLD (OCTEP_OQ_MAX_DESCRIPTORS / 4) #define OCTEP_OQ_INTR_PKT_THRESHOLD 1 #define OCTEP_OQ_INTR_TIME_THRESHOLD 10 #define OCTEP_MSIX_NAME_SIZE (IFNAMSIZ + 32) /* Tx Queue wake threshold * wakeup a stopped Tx queue if minimum 2 descriptors are available. * Even a skb with fragments consume only one Tx queue descriptor entry. */ #define OCTEP_WAKE_QUEUE_THRESHOLD 2 /* Minimum MTU supported by Octeon network interface */ #define OCTEP_MIN_MTU ETH_MIN_MTU /* Default MTU */ #define OCTEP_DEFAULT_MTU 1500 /* pf heartbeat interval in milliseconds */ #define OCTEP_DEFAULT_FW_HB_INTERVAL 1000 /* pf heartbeat miss count */ #define OCTEP_DEFAULT_FW_HB_MISS_COUNT 20 /* Macros to get octeon config params */ #define CFG_GET_IQ_CFG(cfg) ((cfg)->iq) #define CFG_GET_IQ_NUM_DESC(cfg) ((cfg)->iq.num_descs) #define CFG_GET_IQ_INSTR_TYPE(cfg) ((cfg)->iq.instr_type) #define CFG_GET_IQ_INSTR_SIZE(cfg) (64) #define CFG_GET_IQ_DB_MIN(cfg) ((cfg)->iq.db_min) #define CFG_GET_IQ_INTR_THRESHOLD(cfg) ((cfg)->iq.intr_threshold) #define CFG_GET_OQ_NUM_DESC(cfg) ((cfg)->oq.num_descs) #define CFG_GET_OQ_BUF_SIZE(cfg) ((cfg)->oq.buf_size) #define CFG_GET_OQ_REFILL_THRESHOLD(cfg) ((cfg)->oq.refill_threshold) #define CFG_GET_OQ_INTR_PKT(cfg) ((cfg)->oq.oq_intr_pkt) #define CFG_GET_OQ_INTR_TIME(cfg) ((cfg)->oq.oq_intr_time) #define CFG_GET_OQ_WMARK(cfg) ((cfg)->oq.wmark) #define CFG_GET_PORTS_MAX_IO_RINGS(cfg) ((cfg)->pf_ring_cfg.max_io_rings) #define CFG_GET_PORTS_ACTIVE_IO_RINGS(cfg) ((cfg)->pf_ring_cfg.active_io_rings) #define CFG_GET_PORTS_PF_SRN(cfg) ((cfg)->pf_ring_cfg.srn) #define CFG_GET_CORE_TICS_PER_US(cfg) ((cfg)->core_cfg.core_tics_per_us) #define CFG_GET_COPROC_TICS_PER_US(cfg) ((cfg)->core_cfg.coproc_tics_per_us) #define CFG_GET_MAX_VFS(cfg) ((cfg)->sriov_cfg.max_vfs) #define CFG_GET_ACTIVE_VFS(cfg) ((cfg)->sriov_cfg.active_vfs) #define CFG_GET_MAX_RPVF(cfg) ((cfg)->sriov_cfg.max_rings_per_vf) #define CFG_GET_ACTIVE_RPVF(cfg) ((cfg)->sriov_cfg.active_rings_per_vf) #define CFG_GET_VF_SRN(cfg) ((cfg)->sriov_cfg.vf_srn) #define CFG_GET_IOQ_MSIX(cfg) ((cfg)->msix_cfg.ioq_msix) #define CFG_GET_NON_IOQ_MSIX(cfg) ((cfg)->msix_cfg.non_ioq_msix) #define CFG_GET_NON_IOQ_MSIX_NAMES(cfg) ((cfg)->msix_cfg.non_ioq_msix_names) #define CFG_GET_CTRL_MBOX_MEM_ADDR(cfg) ((cfg)->ctrl_mbox_cfg.barmem_addr) /* Hardware Tx Queue configuration. */ struct octep_iq_config { /* Size of the Input queue (number of commands) */ u16 num_descs; /* Command size - 32 or 64 bytes */ u16 instr_type; /* Minimum number of commands pending to be posted to Octeon before driver * hits the Input queue doorbell. */ u16 db_min; /* Trigger the IQ interrupt when processed cmd count reaches * this level. */ u32 intr_threshold; }; /* Hardware Rx Queue configuration. */ struct octep_oq_config { /* Size of Output queue (number of descriptors) */ u16 num_descs; /* Size of buffer in this Output queue. */ u16 buf_size; /* The number of buffers that were consumed during packet processing * by the driver on this Output queue before the driver attempts to * replenish the descriptor ring with new buffers. */ u16 refill_threshold; /* Interrupt Coalescing (Packet Count). Octeon will interrupt the host * only if it sent as many packets as specified by this field. * The driver usually does not use packet count interrupt coalescing. */ u32 oq_intr_pkt; /* Interrupt Coalescing (Time Interval). Octeon will interrupt the host * if at least one packet was sent in the time interval specified by * this field. The driver uses time interval interrupt coalescing by * default. The time is specified in microseconds. */ u32 oq_intr_time; /* Water mark for backpressure. * Output queue sends backpressure signal to source when * free buffer count falls below wmark. */ u32 wmark; }; /* Tx/Rx configuration */ struct octep_pf_ring_config { /* Max number of IOQs */ u16 max_io_rings; /* Number of active IOQs */ u16 active_io_rings; /* Starting IOQ number: this changes based on which PEM is used */ u16 srn; }; /* Octeon Hardware SRIOV config */ struct octep_sriov_config { /* Max number of VF devices supported */ u16 max_vfs; /* Number of VF devices enabled */ u16 active_vfs; /* Max number of rings assigned to VF */ u8 max_rings_per_vf; /* Number of rings enabled per VF */ u8 active_rings_per_vf; /* starting ring number of VF's: ring-0 of VF-0 of the PF */ u16 vf_srn; }; /* Octeon MSI-x config. */ struct octep_msix_config { /* Number of IOQ interrupts */ u16 ioq_msix; /* Number of Non IOQ interrupts */ u16 non_ioq_msix; /* Names of Non IOQ interrupts */ char **non_ioq_msix_names; }; struct octep_ctrl_mbox_config { /* Barmem address for control mbox */ void __iomem *barmem_addr; }; /* Info from firmware */ struct octep_fw_info { /* interface pkind */ u8 pkind; /* front size data */ u8 fsz; /* heartbeat interval in milliseconds */ u16 hb_interval; /* heartbeat miss count */ u16 hb_miss_count; /* reserved */ u16 reserved1; /* supported rx offloads OCTEP_ETH_RX_OFFLOAD_* */ u16 rx_ol_flags; /* supported tx offloads OCTEP_ETH_TX_OFFLOAD_* */ u16 tx_ol_flags; /* reserved */ u32 reserved_offloads; /* extra offload flags */ u64 ext_ol_flags; /* supported features */ u64 features[2]; /* reserved */ u64 reserved2[3]; }; /* Data Structure to hold configuration limits and active config */ struct octep_config { /* Input Queue attributes. */ struct octep_iq_config iq; /* Output Queue attributes. */ struct octep_oq_config oq; /* NIC Port Configuration */ struct octep_pf_ring_config pf_ring_cfg; /* SRIOV configuration of the PF */ struct octep_sriov_config sriov_cfg; /* MSI-X interrupt config */ struct octep_msix_config msix_cfg; /* ctrl mbox config */ struct octep_ctrl_mbox_config ctrl_mbox_cfg; /* fw info */ struct octep_fw_info fw_info; }; #endif /* _OCTEP_CONFIG_H_ */
