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 /* CMDIF driver object */ 30 static struct rte_vdev_driver dpaa2_cmdif_drv; 31 32 /* 33 * This API provides the DPCI device ID in 'attr_value'. 34 * The device ID shall be passed by GPP to the AIOP using CMDIF commands. 35 */ 36 static int 37 dpaa2_cmdif_get_attr(struct rte_rawdev *dev, 38 const char *attr_name, 39 uint64_t *attr_value) 40 { 41 struct dpaa2_dpci_dev *cidev = dev->dev_private; 42 43 DPAA2_CMDIF_FUNC_TRACE(); 44 45 RTE_SET_USED(attr_name); 46 47 if (!attr_value) { 48 DPAA2_CMDIF_ERR("Invalid arguments for getting attributes"); 49 return -EINVAL; 50 } 51 *attr_value = cidev->dpci_id; 52 53 return 0; 54 } 55 56 static int 57 dpaa2_cmdif_enqueue_bufs(struct rte_rawdev *dev, 58 struct rte_rawdev_buf **buffers, 59 unsigned int count, 60 rte_rawdev_obj_t context) 61 { 62 struct dpaa2_dpci_dev *cidev = dev->dev_private; 63 struct rte_dpaa2_cmdif_context *cmdif_send_cnxt; 64 struct dpaa2_queue *txq; 65 struct qbman_fd fd; 66 struct qbman_eq_desc eqdesc; 67 struct qbman_swp *swp; 68 int ret; 69 70 DPAA2_CMDIF_FUNC_TRACE(); 71 72 RTE_SET_USED(count); 73 74 if (unlikely(!DPAA2_PER_LCORE_DPIO)) { 75 ret = dpaa2_affine_qbman_swp(); 76 if (ret) { 77 DPAA2_CMDIF_ERR("Failure in affining portal\n"); 78 return 0; 79 } 80 } 81 swp = DPAA2_PER_LCORE_PORTAL; 82 83 cmdif_send_cnxt = (struct rte_dpaa2_cmdif_context *)(context); 84 txq = &(cidev->tx_queue[cmdif_send_cnxt->priority]); 85 86 /* Prepare enqueue descriptor */ 87 qbman_eq_desc_clear(&eqdesc); 88 qbman_eq_desc_set_fq(&eqdesc, txq->fqid); 89 qbman_eq_desc_set_no_orp(&eqdesc, 0); 90 qbman_eq_desc_set_response(&eqdesc, 0, 0); 91 92 /* Set some of the FD parameters to i. 93 * For performance reasons do not memset 94 */ 95 fd.simple.bpid_offset = 0; 96 fd.simple.ctrl = 0; 97 98 DPAA2_SET_FD_ADDR(&fd, DPAA2_VADDR_TO_IOVA(buffers[0]->buf_addr)); 99 DPAA2_SET_FD_LEN(&fd, cmdif_send_cnxt->size); 100 DPAA2_SET_FD_FRC(&fd, cmdif_send_cnxt->frc); 101 DPAA2_SET_FD_FLC(&fd, cmdif_send_cnxt->flc); 102 103 /* Enqueue a packet to the QBMAN */ 104 do { 105 ret = qbman_swp_enqueue_multiple(swp, &eqdesc, &fd, NULL, 1); 106 if (ret < 0 && ret != -EBUSY) 107 DPAA2_CMDIF_ERR("Transmit failure with err: %d\n", ret); 108 } while (ret == -EBUSY); 109 110 DPAA2_CMDIF_DP_DEBUG("Successfully transmitted a packet\n"); 111 112 return 0; 113 } 114 115 static int 116 dpaa2_cmdif_dequeue_bufs(struct rte_rawdev *dev, 117 struct rte_rawdev_buf **buffers, 118 unsigned int count, 119 rte_rawdev_obj_t context) 120 { 121 struct dpaa2_dpci_dev *cidev = dev->dev_private; 122 struct rte_dpaa2_cmdif_context *cmdif_rcv_cnxt; 123 struct dpaa2_queue *rxq; 124 struct qbman_swp *swp; 125 struct qbman_result *dq_storage; 126 const struct qbman_fd *fd; 127 struct qbman_pull_desc pulldesc; 128 uint8_t status; 129 int ret; 130 131 DPAA2_CMDIF_FUNC_TRACE(); 132 133 RTE_SET_USED(count); 134 135 if (unlikely(!DPAA2_PER_LCORE_DPIO)) { 136 ret = dpaa2_affine_qbman_swp(); 137 if (ret) { 138 DPAA2_CMDIF_ERR("Failure in affining portal\n"); 139 return 0; 140 } 141 } 142 swp = DPAA2_PER_LCORE_PORTAL; 143 144 cmdif_rcv_cnxt = (struct rte_dpaa2_cmdif_context *)(context); 145 rxq = &(cidev->rx_queue[cmdif_rcv_cnxt->priority]); 146 dq_storage = rxq->q_storage->dq_storage[0]; 147 148 qbman_pull_desc_clear(&pulldesc); 149 qbman_pull_desc_set_fq(&pulldesc, rxq->fqid); 150 qbman_pull_desc_set_numframes(&pulldesc, 1); 151 qbman_pull_desc_set_storage(&pulldesc, dq_storage, 152 (uint64_t)(DPAA2_VADDR_TO_IOVA(dq_storage)), 1); 153 154 while (1) { 155 if (qbman_swp_pull(swp, &pulldesc)) { 156 DPAA2_CMDIF_DP_WARN("VDQ cmd not issued. QBMAN is busy\n"); 157 /* Portal was busy, try again */ 158 continue; 159 } 160 break; 161 } 162 163 /* Check if previous issued command is completed. */ 164 while (!qbman_check_command_complete(dq_storage)) 165 ; 166 /* Loop until the dq_storage is updated with new token by QBMAN */ 167 while (!qbman_result_has_new_result(swp, dq_storage)) 168 ; 169 170 /* Check for valid frame. */ 171 status = (uint8_t)qbman_result_DQ_flags(dq_storage); 172 if (unlikely((status & QBMAN_DQ_STAT_VALIDFRAME) == 0)) { 173 DPAA2_CMDIF_DP_DEBUG("No frame is delivered\n"); 174 return 0; 175 } 176 177 fd = qbman_result_DQ_fd(dq_storage); 178 179 buffers[0]->buf_addr = (void *)DPAA2_IOVA_TO_VADDR( 180 DPAA2_GET_FD_ADDR(fd) + DPAA2_GET_FD_OFFSET(fd)); 181 cmdif_rcv_cnxt->size = DPAA2_GET_FD_LEN(fd); 182 cmdif_rcv_cnxt->flc = DPAA2_GET_FD_FLC(fd); 183 cmdif_rcv_cnxt->frc = DPAA2_GET_FD_FRC(fd); 184 185 DPAA2_CMDIF_DP_DEBUG("packet received\n"); 186 187 return 1; 188 } 189 190 static const struct rte_rawdev_ops dpaa2_cmdif_ops = { 191 .attr_get = dpaa2_cmdif_get_attr, 192 .enqueue_bufs = dpaa2_cmdif_enqueue_bufs, 193 .dequeue_bufs = dpaa2_cmdif_dequeue_bufs, 194 }; 195 196 static int 197 dpaa2_cmdif_create(const char *name, 198 struct rte_vdev_device *vdev, 199 int socket_id) 200 { 201 struct rte_rawdev *rawdev; 202 struct dpaa2_dpci_dev *cidev; 203 204 /* Allocate device structure */ 205 rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct dpaa2_dpci_dev), 206 socket_id); 207 if (!rawdev) { 208 DPAA2_CMDIF_ERR("Unable to allocate rawdevice"); 209 return -EINVAL; 210 } 211 212 rawdev->dev_ops = &dpaa2_cmdif_ops; 213 rawdev->device = &vdev->device; 214 rawdev->driver_name = vdev->device.driver->name; 215 216 /* For secondary processes, the primary has done all the work */ 217 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 218 return 0; 219 220 cidev = rte_dpaa2_alloc_dpci_dev(); 221 if (!cidev) { 222 DPAA2_CMDIF_ERR("Unable to allocate CI device"); 223 rte_rawdev_pmd_release(rawdev); 224 return -ENODEV; 225 } 226 227 rawdev->dev_private = cidev; 228 229 return 0; 230 } 231 232 static int 233 dpaa2_cmdif_destroy(const char *name) 234 { 235 int ret; 236 struct rte_rawdev *rdev; 237 238 rdev = rte_rawdev_pmd_get_named_dev(name); 239 if (!rdev) { 240 DPAA2_CMDIF_ERR("Invalid device name (%s)", name); 241 return -EINVAL; 242 } 243 244 /* The primary process will only free the DPCI device */ 245 if (rte_eal_process_type() == RTE_PROC_PRIMARY) 246 rte_dpaa2_free_dpci_dev(rdev->dev_private); 247 248 ret = rte_rawdev_pmd_release(rdev); 249 if (ret) 250 DPAA2_CMDIF_DEBUG("Device cleanup failed"); 251 252 return 0; 253 } 254 255 static int 256 dpaa2_cmdif_probe(struct rte_vdev_device *vdev) 257 { 258 const char *name; 259 int ret = 0; 260 261 name = rte_vdev_device_name(vdev); 262 263 DPAA2_CMDIF_INFO("Init %s on NUMA node %d", name, rte_socket_id()); 264 265 ret = dpaa2_cmdif_create(name, vdev, rte_socket_id()); 266 267 return ret; 268 } 269 270 static int 271 dpaa2_cmdif_remove(struct rte_vdev_device *vdev) 272 { 273 const char *name; 274 int ret; 275 276 name = rte_vdev_device_name(vdev); 277 if (name == NULL) 278 return -1; 279 280 DPAA2_CMDIF_INFO("Closing %s on NUMA node %d", name, rte_socket_id()); 281 282 ret = dpaa2_cmdif_destroy(name); 283 284 return ret; 285 } 286 287 static struct rte_vdev_driver dpaa2_cmdif_drv = { 288 .probe = dpaa2_cmdif_probe, 289 .remove = dpaa2_cmdif_remove 290 }; 291 292 RTE_PMD_REGISTER_VDEV(DPAA2_CMDIF_PMD_NAME, dpaa2_cmdif_drv); 293 294 RTE_INIT(dpaa2_cmdif_init_log) 295 { 296 dpaa2_cmdif_logtype = rte_log_register("pmd.raw.dpaa2.cmdif"); 297 if (dpaa2_cmdif_logtype >= 0) 298 rte_log_set_level(dpaa2_cmdif_logtype, RTE_LOG_INFO); 299 } 300