1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (c) 2015-2018 Atomic Rules LLC 3 */ 4 5 #include <unistd.h> 6 7 #include "ark_logs.h" 8 #include "ark_mpu.h" 9 10 uint16_t 11 ark_api_num_queues(struct ark_mpu_t *mpu) 12 { 13 return mpu->hw.num_queues; 14 } 15 16 uint16_t 17 ark_api_num_queues_per_port(struct ark_mpu_t *mpu, uint16_t ark_ports) 18 { 19 return mpu->hw.num_queues / ark_ports; 20 } 21 22 int 23 ark_mpu_verify(struct ark_mpu_t *mpu, uint32_t obj_size) 24 { 25 uint32_t version; 26 27 version = mpu->id.vernum; 28 if (mpu->id.idnum != ARK_MPU_MODID || 29 version != ARK_MPU_MODVER || 30 mpu->hw.obj_size != obj_size) { 31 ARK_PMD_LOG(ERR, 32 " MPU module not found as expected %08x" 33 " \"%c%c%c%c %c%c%c%c\"\n", 34 mpu->id.idnum, 35 mpu->id.id[0], mpu->id.id[1], 36 mpu->id.id[2], mpu->id.id[3], 37 mpu->id.ver[0], mpu->id.ver[1], 38 mpu->id.ver[2], mpu->id.ver[3]); 39 ARK_PMD_LOG(ERR, 40 " MPU HW num_queues: %u hw_depth %u," 41 " obj_size: %u, obj_per_mrr: %u" 42 " Expected size %u\n", 43 mpu->hw.num_queues, 44 mpu->hw.hw_depth, 45 mpu->hw.obj_size, 46 mpu->hw.obj_per_mrr, 47 obj_size); 48 return -1; 49 } 50 return 0; 51 } 52 53 void 54 ark_mpu_stop(struct ark_mpu_t *mpu) 55 { 56 mpu->cfg.command = MPU_CMD_STOP; 57 } 58 59 void 60 ark_mpu_start(struct ark_mpu_t *mpu) 61 { 62 mpu->cfg.command = MPU_CMD_RUN; 63 } 64 65 int 66 ark_mpu_reset(struct ark_mpu_t *mpu) 67 { 68 int cnt = 0; 69 70 mpu->cfg.command = MPU_CMD_RESET; 71 rte_wmb(); 72 73 while (mpu->cfg.command != MPU_CMD_IDLE) { 74 if (cnt++ > 1000) 75 break; 76 usleep(10); 77 } 78 if (mpu->cfg.command != MPU_CMD_IDLE) { 79 mpu->cfg.command = MPU_CMD_FORCE_RESET; 80 usleep(10); 81 } 82 return mpu->cfg.command != MPU_CMD_IDLE; 83 } 84 85 int 86 ark_mpu_configure(struct ark_mpu_t *mpu, rte_iova_t ring, uint32_t ring_size, 87 int is_tx) 88 { 89 ark_mpu_reset(mpu); 90 91 if (!rte_is_power_of_2(ring_size)) { 92 ARK_PMD_LOG(ERR, "Invalid ring size for MPU %d\n", 93 ring_size); 94 return -1; 95 } 96 97 mpu->cfg.ring_base = ring; 98 mpu->cfg.ring_size = ring_size; 99 mpu->cfg.ring_mask = ring_size - 1; 100 mpu->cfg.min_host_move = is_tx ? 1 : mpu->hw.obj_per_mrr; 101 mpu->cfg.min_hw_move = mpu->hw.obj_per_mrr; 102 mpu->cfg.sw_prod_index = 0; 103 mpu->cfg.hw_cons_index = 0; 104 return 0; 105 } 106 107 void 108 ark_mpu_dump(struct ark_mpu_t *mpu, const char *code, uint16_t qid) 109 { 110 /* DUMP to see that we have started */ 111 ARK_PMD_LOG(DEBUG, "MPU: %s Q: %3u sw_prod %u, hw_cons: %u\n", 112 code, qid, 113 mpu->cfg.sw_prod_index, mpu->cfg.hw_cons_index); 114 } 115 116 void 117 ark_mpu_dump_setup(struct ark_mpu_t *mpu, uint16_t q_id) 118 { 119 ARK_PMD_LOG(DEBUG, "MPU Setup Q: %u" 120 ARK_SU64X "\n", 121 q_id, 122 "ring_base", mpu->cfg.ring_base 123 ); 124 } 125