1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Marvell Octeon EP (EndPoint) Ethernet Driver 3 * 4 * Copyright (C) 2020 Marvell. 5 * 6 */ 7 8#ifndef _OCTEP_CONFIG_H_ 9#define _OCTEP_CONFIG_H_ 10 11/* Tx instruction types by length */ 12#define OCTEP_32BYTE_INSTR 32 13#define OCTEP_64BYTE_INSTR 64 14 15/* Tx Queue: maximum descriptors per ring */ 16/* This needs to be a power of 2 */ 17#define OCTEP_IQ_MAX_DESCRIPTORS 1024 18/* Minimum input (Tx) requests to be enqueued to ring doorbell */ 19#define OCTEP_DB_MIN 8 20/* Packet threshold for Tx queue interrupt */ 21#define OCTEP_IQ_INTR_THRESHOLD 0x0 22 23/* Minimum watermark for backpressure */ 24#define OCTEP_OQ_WMARK_MIN 256 25 26/* Rx Queue: maximum descriptors per ring */ 27#define OCTEP_OQ_MAX_DESCRIPTORS 1024 28 29/* Rx buffer size: Use page size buffers. 30 * Build skb from allocated page buffer once the packet is received. 31 * When a gathered packet is received, make head page as skb head and 32 * page buffers in consecutive Rx descriptors as fragments. 33 */ 34#define OCTEP_OQ_BUF_SIZE (SKB_WITH_OVERHEAD(PAGE_SIZE)) 35#define OCTEP_OQ_PKTS_PER_INTR 128 36#define OCTEP_OQ_REFILL_THRESHOLD (OCTEP_OQ_MAX_DESCRIPTORS / 4) 37 38#define OCTEP_OQ_INTR_PKT_THRESHOLD 1 39#define OCTEP_OQ_INTR_TIME_THRESHOLD 10 40 41#define OCTEP_MSIX_NAME_SIZE (IFNAMSIZ + 32) 42 43/* Tx Queue wake threshold 44 * wakeup a stopped Tx queue if minimum 2 descriptors are available. 45 * Even a skb with fragments consume only one Tx queue descriptor entry. 46 */ 47#define OCTEP_WAKE_QUEUE_THRESHOLD 2 48 49/* Minimum MTU supported by Octeon network interface */ 50#define OCTEP_MIN_MTU ETH_MIN_MTU 51/* Default MTU */ 52#define OCTEP_DEFAULT_MTU 1500 53 54/* pf heartbeat interval in milliseconds */ 55#define OCTEP_DEFAULT_FW_HB_INTERVAL 1000 56/* pf heartbeat miss count */ 57#define OCTEP_DEFAULT_FW_HB_MISS_COUNT 20 58 59/* Macros to get octeon config params */ 60#define CFG_GET_IQ_CFG(cfg) ((cfg)->iq) 61#define CFG_GET_IQ_NUM_DESC(cfg) ((cfg)->iq.num_descs) 62#define CFG_GET_IQ_INSTR_TYPE(cfg) ((cfg)->iq.instr_type) 63#define CFG_GET_IQ_INSTR_SIZE(cfg) (64) 64#define CFG_GET_IQ_DB_MIN(cfg) ((cfg)->iq.db_min) 65#define CFG_GET_IQ_INTR_THRESHOLD(cfg) ((cfg)->iq.intr_threshold) 66 67#define CFG_GET_OQ_NUM_DESC(cfg) ((cfg)->oq.num_descs) 68#define CFG_GET_OQ_BUF_SIZE(cfg) ((cfg)->oq.buf_size) 69#define CFG_GET_OQ_REFILL_THRESHOLD(cfg) ((cfg)->oq.refill_threshold) 70#define CFG_GET_OQ_INTR_PKT(cfg) ((cfg)->oq.oq_intr_pkt) 71#define CFG_GET_OQ_INTR_TIME(cfg) ((cfg)->oq.oq_intr_time) 72#define CFG_GET_OQ_WMARK(cfg) ((cfg)->oq.wmark) 73 74#define CFG_GET_PORTS_MAX_IO_RINGS(cfg) ((cfg)->pf_ring_cfg.max_io_rings) 75#define CFG_GET_PORTS_ACTIVE_IO_RINGS(cfg) ((cfg)->pf_ring_cfg.active_io_rings) 76#define CFG_GET_PORTS_PF_SRN(cfg) ((cfg)->pf_ring_cfg.srn) 77 78#define CFG_GET_CORE_TICS_PER_US(cfg) ((cfg)->core_cfg.core_tics_per_us) 79#define CFG_GET_COPROC_TICS_PER_US(cfg) ((cfg)->core_cfg.coproc_tics_per_us) 80 81#define CFG_GET_MAX_VFS(cfg) ((cfg)->sriov_cfg.max_vfs) 82#define CFG_GET_ACTIVE_VFS(cfg) ((cfg)->sriov_cfg.active_vfs) 83#define CFG_GET_MAX_RPVF(cfg) ((cfg)->sriov_cfg.max_rings_per_vf) 84#define CFG_GET_ACTIVE_RPVF(cfg) ((cfg)->sriov_cfg.active_rings_per_vf) 85#define CFG_GET_VF_SRN(cfg) ((cfg)->sriov_cfg.vf_srn) 86 87#define CFG_GET_IOQ_MSIX(cfg) ((cfg)->msix_cfg.ioq_msix) 88#define CFG_GET_NON_IOQ_MSIX(cfg) ((cfg)->msix_cfg.non_ioq_msix) 89#define CFG_GET_NON_IOQ_MSIX_NAMES(cfg) ((cfg)->msix_cfg.non_ioq_msix_names) 90 91#define CFG_GET_CTRL_MBOX_MEM_ADDR(cfg) ((cfg)->ctrl_mbox_cfg.barmem_addr) 92 93/* Hardware Tx Queue configuration. */ 94struct octep_iq_config { 95 /* Size of the Input queue (number of commands) */ 96 u16 num_descs; 97 98 /* Command size - 32 or 64 bytes */ 99 u16 instr_type; 100 101 /* Minimum number of commands pending to be posted to Octeon before driver 102 * hits the Input queue doorbell. 103 */ 104 u16 db_min; 105 106 /* Trigger the IQ interrupt when processed cmd count reaches 107 * this level. 108 */ 109 u32 intr_threshold; 110}; 111 112/* Hardware Rx Queue configuration. */ 113struct octep_oq_config { 114 /* Size of Output queue (number of descriptors) */ 115 u16 num_descs; 116 117 /* Size of buffer in this Output queue. */ 118 u16 buf_size; 119 120 /* The number of buffers that were consumed during packet processing 121 * by the driver on this Output queue before the driver attempts to 122 * replenish the descriptor ring with new buffers. 123 */ 124 u16 refill_threshold; 125 126 /* Interrupt Coalescing (Packet Count). Octeon will interrupt the host 127 * only if it sent as many packets as specified by this field. 128 * The driver usually does not use packet count interrupt coalescing. 129 */ 130 u32 oq_intr_pkt; 131 132 /* Interrupt Coalescing (Time Interval). Octeon will interrupt the host 133 * if at least one packet was sent in the time interval specified by 134 * this field. The driver uses time interval interrupt coalescing by 135 * default. The time is specified in microseconds. 136 */ 137 u32 oq_intr_time; 138 139 /* Water mark for backpressure. 140 * Output queue sends backpressure signal to source when 141 * free buffer count falls below wmark. 142 */ 143 u32 wmark; 144}; 145 146/* Tx/Rx configuration */ 147struct octep_pf_ring_config { 148 /* Max number of IOQs */ 149 u16 max_io_rings; 150 151 /* Number of active IOQs */ 152 u16 active_io_rings; 153 154 /* Starting IOQ number: this changes based on which PEM is used */ 155 u16 srn; 156}; 157 158/* Octeon Hardware SRIOV config */ 159struct octep_sriov_config { 160 /* Max number of VF devices supported */ 161 u16 max_vfs; 162 163 /* Number of VF devices enabled */ 164 u16 active_vfs; 165 166 /* Max number of rings assigned to VF */ 167 u8 max_rings_per_vf; 168 169 /* Number of rings enabled per VF */ 170 u8 active_rings_per_vf; 171 172 /* starting ring number of VF's: ring-0 of VF-0 of the PF */ 173 u16 vf_srn; 174}; 175 176/* Octeon MSI-x config. */ 177struct octep_msix_config { 178 /* Number of IOQ interrupts */ 179 u16 ioq_msix; 180 181 /* Number of Non IOQ interrupts */ 182 u16 non_ioq_msix; 183 184 /* Names of Non IOQ interrupts */ 185 char **non_ioq_msix_names; 186}; 187 188struct octep_ctrl_mbox_config { 189 /* Barmem address for control mbox */ 190 void __iomem *barmem_addr; 191}; 192 193/* Info from firmware */ 194struct octep_fw_info { 195 /* interface pkind */ 196 u8 pkind; 197 198 /* front size data */ 199 u8 fsz; 200 201 /* heartbeat interval in milliseconds */ 202 u16 hb_interval; 203 204 /* heartbeat miss count */ 205 u16 hb_miss_count; 206 207 /* reserved */ 208 u16 reserved1; 209 210 /* supported rx offloads OCTEP_ETH_RX_OFFLOAD_* */ 211 u16 rx_ol_flags; 212 213 /* supported tx offloads OCTEP_ETH_TX_OFFLOAD_* */ 214 u16 tx_ol_flags; 215 216 /* reserved */ 217 u32 reserved_offloads; 218 219 /* extra offload flags */ 220 u64 ext_ol_flags; 221 222 /* supported features */ 223 u64 features[2]; 224 225 /* reserved */ 226 u64 reserved2[3]; 227}; 228 229/* Data Structure to hold configuration limits and active config */ 230struct octep_config { 231 /* Input Queue attributes. */ 232 struct octep_iq_config iq; 233 234 /* Output Queue attributes. */ 235 struct octep_oq_config oq; 236 237 /* NIC Port Configuration */ 238 struct octep_pf_ring_config pf_ring_cfg; 239 240 /* SRIOV configuration of the PF */ 241 struct octep_sriov_config sriov_cfg; 242 243 /* MSI-X interrupt config */ 244 struct octep_msix_config msix_cfg; 245 246 /* ctrl mbox config */ 247 struct octep_ctrl_mbox_config ctrl_mbox_cfg; 248 249 /* fw info */ 250 struct octep_fw_info fw_info; 251}; 252#endif /* _OCTEP_CONFIG_H_ */ 253