1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2018 NXP 3 */ 4 5 #include <stdio.h> 6 #include <errno.h> 7 #include <stdint.h> 8 9 #include <rte_bus_vdev.h> 10 #include <rte_atomic.h> 11 #include <rte_interrupts.h> 12 #include <rte_branch_prediction.h> 13 #include <rte_lcore.h> 14 15 #include <rte_rawdev.h> 16 #include <rte_rawdev_pmd.h> 17 18 #include <portal/dpaa2_hw_pvt.h> 19 #include <portal/dpaa2_hw_dpio.h> 20 #include "dpaa2_cmdif_logs.h" 21 #include "rte_pmd_dpaa2_cmdif.h" 22 23 /* Dynamic log type identifier */ 24 int dpaa2_cmdif_logtype; 25 26 /* CMDIF driver name */ 27 #define DPAA2_CMDIF_PMD_NAME dpaa2_dpci 28 29 /* 30 * This API provides the DPCI device ID in 'attr_value'. 31 * The device ID shall be passed by GPP to the AIOP using CMDIF commands. 32 */ 33 static int 34 dpaa2_cmdif_get_attr(struct rte_rawdev *dev, 35 const char *attr_name, 36 uint64_t *attr_value) 37 { 38 struct dpaa2_dpci_dev *cidev = dev->dev_private; 39 40 DPAA2_CMDIF_FUNC_TRACE(); 41 42 RTE_SET_USED(attr_name); 43 44 if (!attr_value) { 45 DPAA2_CMDIF_ERR("Invalid arguments for getting attributes"); 46 return -EINVAL; 47 } 48 *attr_value = cidev->dpci_id; 49 50 return 0; 51 } 52 53 static int 54 dpaa2_cmdif_enqueue_bufs(struct rte_rawdev *dev, 55 struct rte_rawdev_buf **buffers, 56 unsigned int count, 57 rte_rawdev_obj_t context) 58 { 59 struct dpaa2_dpci_dev *cidev = dev->dev_private; 60 struct rte_dpaa2_cmdif_context *cmdif_send_cnxt; 61 struct dpaa2_queue *txq; 62 struct qbman_fd fd; 63 struct qbman_eq_desc eqdesc; 64 struct qbman_swp *swp; 65 int ret; 66 67 RTE_SET_USED(count); 68 69 if (unlikely(!DPAA2_PER_LCORE_DPIO)) { 70 ret = dpaa2_affine_qbman_swp(); 71 if (ret) { 72 DPAA2_CMDIF_ERR("Failure in affining portal\n"); 73 return 0; 74 } 75 } 76 swp = DPAA2_PER_LCORE_PORTAL; 77 78 cmdif_send_cnxt = (struct rte_dpaa2_cmdif_context *)(context); 79 txq = &(cidev->tx_queue[cmdif_send_cnxt->priority]); 80 81 /* Prepare enqueue descriptor */ 82 qbman_eq_desc_clear(&eqdesc); 83 qbman_eq_desc_set_fq(&eqdesc, txq->fqid); 84 qbman_eq_desc_set_no_orp(&eqdesc, 0); 85 qbman_eq_desc_set_response(&eqdesc, 0, 0); 86 87 /* Set some of the FD parameters to i. 88 * For performance reasons do not memset 89 */ 90 fd.simple.bpid_offset = 0; 91 fd.simple.ctrl = 0; 92 93 DPAA2_SET_FD_ADDR(&fd, DPAA2_VADDR_TO_IOVA(buffers[0]->buf_addr)); 94 DPAA2_SET_FD_LEN(&fd, cmdif_send_cnxt->size); 95 DPAA2_SET_FD_FRC(&fd, cmdif_send_cnxt->frc); 96 DPAA2_SET_FD_FLC(&fd, cmdif_send_cnxt->flc); 97 98 /* Enqueue a packet to the QBMAN */ 99 do { 100 ret = qbman_swp_enqueue_multiple(swp, &eqdesc, &fd, NULL, 1); 101 if (ret < 0 && ret != -EBUSY) 102 DPAA2_CMDIF_ERR("Transmit failure with err: %d\n", ret); 103 } while (ret == -EBUSY); 104 105 DPAA2_CMDIF_DP_DEBUG("Successfully transmitted a packet\n"); 106 107 return 0; 108 } 109 110 static int 111 dpaa2_cmdif_dequeue_bufs(struct rte_rawdev *dev, 112 struct rte_rawdev_buf **buffers, 113 unsigned int count, 114 rte_rawdev_obj_t context) 115 { 116 struct dpaa2_dpci_dev *cidev = dev->dev_private; 117 struct rte_dpaa2_cmdif_context *cmdif_rcv_cnxt; 118 struct dpaa2_queue *rxq; 119 struct qbman_swp *swp; 120 struct qbman_result *dq_storage; 121 const struct qbman_fd *fd; 122 struct qbman_pull_desc pulldesc; 123 uint8_t status; 124 int ret; 125 126 RTE_SET_USED(count); 127 128 if (unlikely(!DPAA2_PER_LCORE_DPIO)) { 129 ret = dpaa2_affine_qbman_swp(); 130 if (ret) { 131 DPAA2_CMDIF_ERR("Failure in affining portal\n"); 132 return 0; 133 } 134 } 135 swp = DPAA2_PER_LCORE_PORTAL; 136 137 cmdif_rcv_cnxt = (struct rte_dpaa2_cmdif_context *)(context); 138 rxq = &(cidev->rx_queue[cmdif_rcv_cnxt->priority]); 139 dq_storage = rxq->q_storage->dq_storage[0]; 140 141 qbman_pull_desc_clear(&pulldesc); 142 qbman_pull_desc_set_fq(&pulldesc, rxq->fqid); 143 qbman_pull_desc_set_numframes(&pulldesc, 1); 144 qbman_pull_desc_set_storage(&pulldesc, dq_storage, 145 (uint64_t)(DPAA2_VADDR_TO_IOVA(dq_storage)), 1); 146 147 while (1) { 148 if (qbman_swp_pull(swp, &pulldesc)) { 149 DPAA2_CMDIF_DP_WARN("VDQ cmd not issued. QBMAN is busy\n"); 150 /* Portal was busy, try again */ 151 continue; 152 } 153 break; 154 } 155 156 /* Check if previous issued command is completed. */ 157 while (!qbman_check_command_complete(dq_storage)) 158 ; 159 /* Loop until the dq_storage is updated with new token by QBMAN */ 160 while (!qbman_result_has_new_result(swp, dq_storage)) 161 ; 162 163 /* Check for valid frame. */ 164 status = (uint8_t)qbman_result_DQ_flags(dq_storage); 165 if (unlikely((status & QBMAN_DQ_STAT_VALIDFRAME) == 0)) { 166 DPAA2_CMDIF_DP_DEBUG("No frame is delivered\n"); 167 return 0; 168 } 169 170 fd = qbman_result_DQ_fd(dq_storage); 171 172 buffers[0]->buf_addr = (void *)DPAA2_IOVA_TO_VADDR( 173 DPAA2_GET_FD_ADDR(fd) + DPAA2_GET_FD_OFFSET(fd)); 174 cmdif_rcv_cnxt->size = DPAA2_GET_FD_LEN(fd); 175 cmdif_rcv_cnxt->flc = DPAA2_GET_FD_FLC(fd); 176 cmdif_rcv_cnxt->frc = DPAA2_GET_FD_FRC(fd); 177 178 DPAA2_CMDIF_DP_DEBUG("packet received\n"); 179 180 return 1; 181 } 182 183 static const struct rte_rawdev_ops dpaa2_cmdif_ops = { 184 .attr_get = dpaa2_cmdif_get_attr, 185 .enqueue_bufs = dpaa2_cmdif_enqueue_bufs, 186 .dequeue_bufs = dpaa2_cmdif_dequeue_bufs, 187 }; 188 189 static int 190 dpaa2_cmdif_create(const char *name, 191 struct rte_vdev_device *vdev, 192 int socket_id) 193 { 194 struct rte_rawdev *rawdev; 195 struct dpaa2_dpci_dev *cidev; 196 197 /* Allocate device structure */ 198 rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct dpaa2_dpci_dev), 199 socket_id); 200 if (!rawdev) { 201 DPAA2_CMDIF_ERR("Unable to allocate rawdevice"); 202 return -EINVAL; 203 } 204 205 rawdev->dev_ops = &dpaa2_cmdif_ops; 206 rawdev->device = &vdev->device; 207 208 /* For secondary processes, the primary has done all the work */ 209 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 210 return 0; 211 212 cidev = rte_dpaa2_alloc_dpci_dev(); 213 if (!cidev) { 214 DPAA2_CMDIF_ERR("Unable to allocate CI device"); 215 rte_rawdev_pmd_release(rawdev); 216 return -ENODEV; 217 } 218 219 rawdev->dev_private = cidev; 220 221 return 0; 222 } 223 224 static int 225 dpaa2_cmdif_destroy(const char *name) 226 { 227 int ret; 228 struct rte_rawdev *rdev; 229 230 rdev = rte_rawdev_pmd_get_named_dev(name); 231 if (!rdev) { 232 DPAA2_CMDIF_ERR("Invalid device name (%s)", name); 233 return -EINVAL; 234 } 235 236 /* The primary process will only free the DPCI device */ 237 if (rte_eal_process_type() == RTE_PROC_PRIMARY) 238 rte_dpaa2_free_dpci_dev(rdev->dev_private); 239 240 ret = rte_rawdev_pmd_release(rdev); 241 if (ret) 242 DPAA2_CMDIF_DEBUG("Device cleanup failed"); 243 244 return 0; 245 } 246 247 static int 248 dpaa2_cmdif_probe(struct rte_vdev_device *vdev) 249 { 250 const char *name; 251 int ret = 0; 252 253 name = rte_vdev_device_name(vdev); 254 255 DPAA2_CMDIF_INFO("Init %s on NUMA node %d", name, rte_socket_id()); 256 257 ret = dpaa2_cmdif_create(name, vdev, rte_socket_id()); 258 259 return ret; 260 } 261 262 static int 263 dpaa2_cmdif_remove(struct rte_vdev_device *vdev) 264 { 265 const char *name; 266 int ret; 267 268 name = rte_vdev_device_name(vdev); 269 if (name == NULL) 270 return -1; 271 272 DPAA2_CMDIF_INFO("Closing %s on NUMA node %d", name, rte_socket_id()); 273 274 ret = dpaa2_cmdif_destroy(name); 275 276 return ret; 277 } 278 279 static struct rte_vdev_driver dpaa2_cmdif_drv = { 280 .probe = dpaa2_cmdif_probe, 281 .remove = dpaa2_cmdif_remove 282 }; 283 284 RTE_PMD_REGISTER_VDEV(DPAA2_CMDIF_PMD_NAME, dpaa2_cmdif_drv); 285 286 RTE_INIT(dpaa2_cmdif_init_log) 287 { 288 dpaa2_cmdif_logtype = rte_log_register("pmd.raw.dpaa2.cmdif"); 289 if (dpaa2_cmdif_logtype >= 0) 290 rte_log_set_level(dpaa2_cmdif_logtype, RTE_LOG_INFO); 291 } 292