1 // SPDX-License-Identifier: GPL-2.0 2 /* Marvell RVU Physical Function ethernet driver 3 * 4 * Copyright (C) 2020 Marvell. 5 * 6 */ 7 8 #include <linux/module.h> 9 #include <linux/interrupt.h> 10 #include <linux/pci.h> 11 #include <linux/etherdevice.h> 12 #include <linux/of.h> 13 #include <linux/if_vlan.h> 14 #include <linux/iommu.h> 15 #include <net/ip.h> 16 #include <linux/bpf.h> 17 #include <linux/bpf_trace.h> 18 #include <linux/bitfield.h> 19 #include <net/page_pool/types.h> 20 21 #include "otx2_reg.h" 22 #include "otx2_common.h" 23 #include "otx2_txrx.h" 24 #include "otx2_struct.h" 25 #include "otx2_ptp.h" 26 #include "cn10k.h" 27 #include "qos.h" 28 #include <rvu_trace.h> 29 #include "cn10k_ipsec.h" 30 #include "otx2_xsk.h" 31 32 #define DRV_NAME "rvu_nicpf" 33 #define DRV_STRING "Marvell RVU NIC Physical Function Driver" 34 35 /* Supported devices */ 36 static const struct pci_device_id otx2_pf_id_table[] = { 37 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_PF) }, 38 { 0, } /* end of table */ 39 }; 40 41 MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>"); 42 MODULE_DESCRIPTION(DRV_STRING); 43 MODULE_LICENSE("GPL v2"); 44 MODULE_DEVICE_TABLE(pci, otx2_pf_id_table); 45 46 static void otx2_vf_link_event_task(struct work_struct *work); 47 48 enum { 49 TYPE_PFAF, 50 TYPE_PFVF, 51 }; 52 53 static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable); 54 static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable); 55 56 static int otx2_change_mtu(struct net_device *netdev, int new_mtu) 57 { 58 struct otx2_nic *pf = netdev_priv(netdev); 59 bool if_up = netif_running(netdev); 60 int err = 0; 61 62 if (pf->xdp_prog && new_mtu > MAX_XDP_MTU) { 63 netdev_warn(netdev, "Jumbo frames not yet supported with XDP, current MTU %d.\n", 64 netdev->mtu); 65 return -EINVAL; 66 } 67 if (if_up) 68 otx2_stop(netdev); 69 70 netdev_info(netdev, "Changing MTU from %d to %d\n", 71 netdev->mtu, new_mtu); 72 WRITE_ONCE(netdev->mtu, new_mtu); 73 74 if (if_up) 75 err = otx2_open(netdev); 76 77 return err; 78 } 79 80 static void otx2_disable_flr_me_intr(struct otx2_nic *pf) 81 { 82 int irq, vfs = pf->total_vfs; 83 84 /* Disable VFs ME interrupts */ 85 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(0), INTR_MASK(vfs)); 86 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0); 87 free_irq(irq, pf); 88 89 /* Disable VFs FLR interrupts */ 90 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(0), INTR_MASK(vfs)); 91 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0); 92 free_irq(irq, pf); 93 94 if (vfs <= 64) 95 return; 96 97 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(1), INTR_MASK(vfs - 64)); 98 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME1); 99 free_irq(irq, pf); 100 101 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(1), INTR_MASK(vfs - 64)); 102 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR1); 103 free_irq(irq, pf); 104 } 105 106 static void otx2_flr_wq_destroy(struct otx2_nic *pf) 107 { 108 if (!pf->flr_wq) 109 return; 110 destroy_workqueue(pf->flr_wq); 111 pf->flr_wq = NULL; 112 devm_kfree(pf->dev, pf->flr_wrk); 113 } 114 115 static void otx2_flr_handler(struct work_struct *work) 116 { 117 struct flr_work *flrwork = container_of(work, struct flr_work, work); 118 struct otx2_nic *pf = flrwork->pf; 119 struct mbox *mbox = &pf->mbox; 120 struct msg_req *req; 121 int vf, reg = 0; 122 123 vf = flrwork - pf->flr_wrk; 124 125 mutex_lock(&mbox->lock); 126 req = otx2_mbox_alloc_msg_vf_flr(mbox); 127 if (!req) { 128 mutex_unlock(&mbox->lock); 129 return; 130 } 131 req->hdr.pcifunc &= RVU_PFVF_FUNC_MASK; 132 req->hdr.pcifunc |= (vf + 1) & RVU_PFVF_FUNC_MASK; 133 134 if (!otx2_sync_mbox_msg(&pf->mbox)) { 135 if (vf >= 64) { 136 reg = 1; 137 vf = vf - 64; 138 } 139 /* clear transcation pending bit */ 140 otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf)); 141 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(reg), BIT_ULL(vf)); 142 } 143 144 mutex_unlock(&mbox->lock); 145 } 146 147 static irqreturn_t otx2_pf_flr_intr_handler(int irq, void *pf_irq) 148 { 149 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 150 int reg, dev, vf, start_vf, num_reg = 1; 151 u64 intr; 152 153 if (pf->total_vfs > 64) 154 num_reg = 2; 155 156 for (reg = 0; reg < num_reg; reg++) { 157 intr = otx2_read64(pf, RVU_PF_VFFLR_INTX(reg)); 158 if (!intr) 159 continue; 160 start_vf = 64 * reg; 161 for (vf = 0; vf < 64; vf++) { 162 if (!(intr & BIT_ULL(vf))) 163 continue; 164 dev = vf + start_vf; 165 queue_work(pf->flr_wq, &pf->flr_wrk[dev].work); 166 /* Clear interrupt */ 167 otx2_write64(pf, RVU_PF_VFFLR_INTX(reg), BIT_ULL(vf)); 168 /* Disable the interrupt */ 169 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(reg), 170 BIT_ULL(vf)); 171 } 172 } 173 return IRQ_HANDLED; 174 } 175 176 static irqreturn_t otx2_pf_me_intr_handler(int irq, void *pf_irq) 177 { 178 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 179 int vf, reg, num_reg = 1; 180 u64 intr; 181 182 if (pf->total_vfs > 64) 183 num_reg = 2; 184 185 for (reg = 0; reg < num_reg; reg++) { 186 intr = otx2_read64(pf, RVU_PF_VFME_INTX(reg)); 187 if (!intr) 188 continue; 189 for (vf = 0; vf < 64; vf++) { 190 if (!(intr & BIT_ULL(vf))) 191 continue; 192 /* clear trpend bit */ 193 otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf)); 194 /* clear interrupt */ 195 otx2_write64(pf, RVU_PF_VFME_INTX(reg), BIT_ULL(vf)); 196 } 197 } 198 return IRQ_HANDLED; 199 } 200 201 static int otx2_register_flr_me_intr(struct otx2_nic *pf, int numvfs) 202 { 203 struct otx2_hw *hw = &pf->hw; 204 char *irq_name; 205 int ret; 206 207 /* Register ME interrupt handler*/ 208 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME0 * NAME_SIZE]; 209 snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME0", 210 rvu_get_pf(pf->pdev, pf->pcifunc)); 211 ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0), 212 otx2_pf_me_intr_handler, 0, irq_name, pf); 213 if (ret) { 214 dev_err(pf->dev, 215 "RVUPF: IRQ registration failed for ME0\n"); 216 } 217 218 /* Register FLR interrupt handler */ 219 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR0 * NAME_SIZE]; 220 snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR0", 221 rvu_get_pf(pf->pdev, pf->pcifunc)); 222 ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0), 223 otx2_pf_flr_intr_handler, 0, irq_name, pf); 224 if (ret) { 225 dev_err(pf->dev, 226 "RVUPF: IRQ registration failed for FLR0\n"); 227 return ret; 228 } 229 230 if (numvfs > 64) { 231 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME1 * NAME_SIZE]; 232 snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME1", 233 rvu_get_pf(pf->pdev, pf->pcifunc)); 234 ret = request_irq(pci_irq_vector 235 (pf->pdev, RVU_PF_INT_VEC_VFME1), 236 otx2_pf_me_intr_handler, 0, irq_name, pf); 237 if (ret) { 238 dev_err(pf->dev, 239 "RVUPF: IRQ registration failed for ME1\n"); 240 } 241 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR1 * NAME_SIZE]; 242 snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR1", 243 rvu_get_pf(pf->pdev, pf->pcifunc)); 244 ret = request_irq(pci_irq_vector 245 (pf->pdev, RVU_PF_INT_VEC_VFFLR1), 246 otx2_pf_flr_intr_handler, 0, irq_name, pf); 247 if (ret) { 248 dev_err(pf->dev, 249 "RVUPF: IRQ registration failed for FLR1\n"); 250 return ret; 251 } 252 } 253 254 /* Enable ME interrupt for all VFs*/ 255 otx2_write64(pf, RVU_PF_VFME_INTX(0), INTR_MASK(numvfs)); 256 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 257 258 /* Enable FLR interrupt for all VFs*/ 259 otx2_write64(pf, RVU_PF_VFFLR_INTX(0), INTR_MASK(numvfs)); 260 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 261 262 if (numvfs > 64) { 263 numvfs -= 64; 264 265 otx2_write64(pf, RVU_PF_VFME_INTX(1), INTR_MASK(numvfs)); 266 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(1), 267 INTR_MASK(numvfs)); 268 269 otx2_write64(pf, RVU_PF_VFFLR_INTX(1), INTR_MASK(numvfs)); 270 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(1), 271 INTR_MASK(numvfs)); 272 } 273 return 0; 274 } 275 276 static int otx2_pf_flr_init(struct otx2_nic *pf, int num_vfs) 277 { 278 int vf; 279 280 pf->flr_wq = alloc_ordered_workqueue("otx2_pf_flr_wq", WQ_HIGHPRI); 281 if (!pf->flr_wq) 282 return -ENOMEM; 283 284 pf->flr_wrk = devm_kcalloc(pf->dev, num_vfs, 285 sizeof(struct flr_work), GFP_KERNEL); 286 if (!pf->flr_wrk) { 287 destroy_workqueue(pf->flr_wq); 288 return -ENOMEM; 289 } 290 291 for (vf = 0; vf < num_vfs; vf++) { 292 pf->flr_wrk[vf].pf = pf; 293 INIT_WORK(&pf->flr_wrk[vf].work, otx2_flr_handler); 294 } 295 296 return 0; 297 } 298 299 void otx2_queue_vf_work(struct mbox *mw, struct workqueue_struct *mbox_wq, 300 int first, int mdevs, u64 intr) 301 { 302 struct otx2_mbox_dev *mdev; 303 struct otx2_mbox *mbox; 304 struct mbox_hdr *hdr; 305 int i; 306 307 for (i = first; i < mdevs; i++) { 308 /* start from 0 */ 309 if (!(intr & BIT_ULL(i - first))) 310 continue; 311 312 mbox = &mw->mbox; 313 mdev = &mbox->dev[i]; 314 hdr = mdev->mbase + mbox->rx_start; 315 /* The hdr->num_msgs is set to zero immediately in the interrupt 316 * handler to ensure that it holds a correct value next time 317 * when the interrupt handler is called. pf->mw[i].num_msgs 318 * holds the data for use in otx2_pfvf_mbox_handler and 319 * pf->mw[i].up_num_msgs holds the data for use in 320 * otx2_pfvf_mbox_up_handler. 321 */ 322 if (hdr->num_msgs) { 323 mw[i].num_msgs = hdr->num_msgs; 324 hdr->num_msgs = 0; 325 queue_work(mbox_wq, &mw[i].mbox_wrk); 326 } 327 328 mbox = &mw->mbox_up; 329 mdev = &mbox->dev[i]; 330 hdr = mdev->mbase + mbox->rx_start; 331 if (hdr->num_msgs) { 332 mw[i].up_num_msgs = hdr->num_msgs; 333 hdr->num_msgs = 0; 334 queue_work(mbox_wq, &mw[i].mbox_up_wrk); 335 } 336 } 337 } 338 339 static void otx2_forward_msg_pfvf(struct otx2_mbox_dev *mdev, 340 struct otx2_mbox *pfvf_mbox, void *bbuf_base, 341 int devid) 342 { 343 struct otx2_mbox_dev *src_mdev = mdev; 344 int offset; 345 346 /* Msgs are already copied, trigger VF's mbox irq */ 347 smp_wmb(); 348 349 otx2_mbox_wait_for_zero(pfvf_mbox, devid); 350 351 offset = pfvf_mbox->trigger | (devid << pfvf_mbox->tr_shift); 352 writeq(MBOX_DOWN_MSG, (void __iomem *)pfvf_mbox->reg_base + offset); 353 354 /* Restore VF's mbox bounce buffer region address */ 355 src_mdev->mbase = bbuf_base; 356 } 357 358 static int otx2_forward_vf_mbox_msgs(struct otx2_nic *pf, 359 struct otx2_mbox *src_mbox, 360 int dir, int vf, int num_msgs) 361 { 362 struct otx2_mbox_dev *src_mdev, *dst_mdev; 363 struct mbox_hdr *mbox_hdr; 364 struct mbox_hdr *req_hdr; 365 struct mbox *dst_mbox; 366 int dst_size, err; 367 368 if (dir == MBOX_DIR_PFAF) { 369 /* Set VF's mailbox memory as PF's bounce buffer memory, so 370 * that explicit copying of VF's msgs to PF=>AF mbox region 371 * and AF=>PF responses to VF's mbox region can be avoided. 372 */ 373 src_mdev = &src_mbox->dev[vf]; 374 mbox_hdr = src_mbox->hwbase + 375 src_mbox->rx_start + (vf * MBOX_SIZE); 376 377 dst_mbox = &pf->mbox; 378 dst_size = dst_mbox->mbox.tx_size - 379 ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN); 380 /* Check if msgs fit into destination area and has valid size */ 381 if (mbox_hdr->msg_size > dst_size || !mbox_hdr->msg_size) 382 return -EINVAL; 383 384 dst_mdev = &dst_mbox->mbox.dev[0]; 385 386 mutex_lock(&pf->mbox.lock); 387 dst_mdev->mbase = src_mdev->mbase; 388 dst_mdev->msg_size = mbox_hdr->msg_size; 389 dst_mdev->num_msgs = num_msgs; 390 err = otx2_sync_mbox_msg(dst_mbox); 391 /* Error code -EIO indicate there is a communication failure 392 * to the AF. Rest of the error codes indicate that AF processed 393 * VF messages and set the error codes in response messages 394 * (if any) so simply forward responses to VF. 395 */ 396 if (err == -EIO) { 397 dev_warn(pf->dev, 398 "AF not responding to VF%d messages\n", vf); 399 /* restore PF mbase and exit */ 400 dst_mdev->mbase = pf->mbox.bbuf_base; 401 mutex_unlock(&pf->mbox.lock); 402 return err; 403 } 404 /* At this point, all the VF messages sent to AF are acked 405 * with proper responses and responses are copied to VF 406 * mailbox hence raise interrupt to VF. 407 */ 408 req_hdr = (struct mbox_hdr *)(dst_mdev->mbase + 409 dst_mbox->mbox.rx_start); 410 req_hdr->num_msgs = num_msgs; 411 412 otx2_forward_msg_pfvf(dst_mdev, &pf->mbox_pfvf[0].mbox, 413 pf->mbox.bbuf_base, vf); 414 mutex_unlock(&pf->mbox.lock); 415 } else if (dir == MBOX_DIR_PFVF_UP) { 416 src_mdev = &src_mbox->dev[0]; 417 mbox_hdr = src_mbox->hwbase + src_mbox->rx_start; 418 req_hdr = (struct mbox_hdr *)(src_mdev->mbase + 419 src_mbox->rx_start); 420 req_hdr->num_msgs = num_msgs; 421 422 dst_mbox = &pf->mbox_pfvf[0]; 423 dst_size = dst_mbox->mbox_up.tx_size - 424 ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN); 425 /* Check if msgs fit into destination area */ 426 if (mbox_hdr->msg_size > dst_size) 427 return -EINVAL; 428 429 dst_mdev = &dst_mbox->mbox_up.dev[vf]; 430 dst_mdev->mbase = src_mdev->mbase; 431 dst_mdev->msg_size = mbox_hdr->msg_size; 432 dst_mdev->num_msgs = mbox_hdr->num_msgs; 433 err = otx2_sync_mbox_up_msg(dst_mbox, vf); 434 if (err) { 435 dev_warn(pf->dev, 436 "VF%d is not responding to mailbox\n", vf); 437 return err; 438 } 439 } else if (dir == MBOX_DIR_VFPF_UP) { 440 req_hdr = (struct mbox_hdr *)(src_mbox->dev[0].mbase + 441 src_mbox->rx_start); 442 req_hdr->num_msgs = num_msgs; 443 otx2_forward_msg_pfvf(&pf->mbox_pfvf->mbox_up.dev[vf], 444 &pf->mbox.mbox_up, 445 pf->mbox_pfvf[vf].bbuf_base, 446 0); 447 } 448 449 return 0; 450 } 451 452 static void otx2_pfvf_mbox_handler(struct work_struct *work) 453 { 454 struct mbox_msghdr *msg = NULL; 455 int offset, vf_idx, id, err; 456 struct otx2_mbox_dev *mdev; 457 struct otx2_mbox *mbox; 458 struct mbox *vf_mbox; 459 struct otx2_nic *pf; 460 461 vf_mbox = container_of(work, struct mbox, mbox_wrk); 462 pf = vf_mbox->pfvf; 463 vf_idx = vf_mbox - pf->mbox_pfvf; 464 465 mbox = &pf->mbox_pfvf[0].mbox; 466 mdev = &mbox->dev[vf_idx]; 467 468 offset = ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN); 469 470 trace_otx2_msg_status(pf->pdev, "PF-VF down queue handler(forwarding)", 471 vf_mbox->num_msgs); 472 473 for (id = 0; id < vf_mbox->num_msgs; id++) { 474 msg = (struct mbox_msghdr *)(mdev->mbase + mbox->rx_start + 475 offset); 476 477 if (msg->sig != OTX2_MBOX_REQ_SIG) 478 goto inval_msg; 479 480 /* Set VF's number in each of the msg */ 481 msg->pcifunc &= ~RVU_PFVF_FUNC_MASK; 482 msg->pcifunc |= (vf_idx + 1) & RVU_PFVF_FUNC_MASK; 483 offset = msg->next_msgoff; 484 } 485 err = otx2_forward_vf_mbox_msgs(pf, mbox, MBOX_DIR_PFAF, vf_idx, 486 vf_mbox->num_msgs); 487 if (err) 488 goto inval_msg; 489 return; 490 491 inval_msg: 492 otx2_reply_invalid_msg(mbox, vf_idx, 0, msg->id); 493 otx2_mbox_msg_send(mbox, vf_idx); 494 } 495 496 static void otx2_pfvf_mbox_up_handler(struct work_struct *work) 497 { 498 struct mbox *vf_mbox = container_of(work, struct mbox, mbox_up_wrk); 499 struct otx2_nic *pf = vf_mbox->pfvf; 500 struct otx2_mbox_dev *mdev; 501 int offset, id, vf_idx = 0; 502 struct mbox_msghdr *msg; 503 struct otx2_mbox *mbox; 504 505 vf_idx = vf_mbox - pf->mbox_pfvf; 506 mbox = &pf->mbox_pfvf[0].mbox_up; 507 mdev = &mbox->dev[vf_idx]; 508 509 offset = mbox->rx_start + ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN); 510 511 trace_otx2_msg_status(pf->pdev, "PF-VF up queue handler(response)", 512 vf_mbox->up_num_msgs); 513 514 for (id = 0; id < vf_mbox->up_num_msgs; id++) { 515 msg = mdev->mbase + offset; 516 517 if (msg->id >= MBOX_MSG_MAX) { 518 dev_err(pf->dev, 519 "Mbox msg with unknown ID 0x%x\n", msg->id); 520 goto end; 521 } 522 523 if (msg->sig != OTX2_MBOX_RSP_SIG) { 524 dev_err(pf->dev, 525 "Mbox msg with wrong signature %x, ID 0x%x\n", 526 msg->sig, msg->id); 527 goto end; 528 } 529 530 switch (msg->id) { 531 case MBOX_MSG_CGX_LINK_EVENT: 532 case MBOX_MSG_REP_EVENT_UP_NOTIFY: 533 break; 534 default: 535 if (msg->rc) 536 dev_err(pf->dev, 537 "Mbox msg response has err %d, ID 0x%x\n", 538 msg->rc, msg->id); 539 break; 540 } 541 542 end: 543 offset = mbox->rx_start + msg->next_msgoff; 544 if (mdev->msgs_acked == (vf_mbox->up_num_msgs - 1)) 545 __otx2_mbox_reset(mbox, vf_idx); 546 mdev->msgs_acked++; 547 } 548 } 549 550 irqreturn_t otx2_pfvf_mbox_intr_handler(int irq, void *pf_irq) 551 { 552 struct otx2_nic *pf = (struct otx2_nic *)(pf_irq); 553 int vfs = pf->total_vfs; 554 struct mbox *mbox; 555 u64 intr; 556 557 mbox = pf->mbox_pfvf; 558 /* Handle VF interrupts */ 559 if (vfs > 64) { 560 intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(1)); 561 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), intr); 562 otx2_queue_vf_work(mbox, pf->mbox_pfvf_wq, 64, vfs, intr); 563 if (intr) 564 trace_otx2_msg_interrupt(mbox->mbox.pdev, "VF(s) to PF", intr); 565 vfs = 64; 566 } 567 568 intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(0)); 569 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), intr); 570 571 otx2_queue_vf_work(mbox, pf->mbox_pfvf_wq, 0, vfs, intr); 572 573 if (intr) 574 trace_otx2_msg_interrupt(mbox->mbox.pdev, "VF(s) to PF", intr); 575 576 return IRQ_HANDLED; 577 } 578 579 static void *cn20k_pfvf_mbox_alloc(struct otx2_nic *pf, int numvfs) 580 { 581 struct qmem *mbox_addr; 582 int err; 583 584 err = qmem_alloc(&pf->pdev->dev, &mbox_addr, numvfs, MBOX_SIZE); 585 if (err) { 586 dev_err(pf->dev, "qmem alloc fail\n"); 587 return ERR_PTR(-ENOMEM); 588 } 589 590 otx2_write64(pf, RVU_PF_VF_MBOX_ADDR, (u64)mbox_addr->iova); 591 pf->pfvf_mbox_addr = mbox_addr; 592 593 return mbox_addr->base; 594 } 595 596 static int otx2_pfvf_mbox_init(struct otx2_nic *pf, int numvfs) 597 { 598 void __iomem *hwbase; 599 struct mbox *mbox; 600 int err, vf; 601 u64 base; 602 603 if (!numvfs) 604 return -EINVAL; 605 606 pf->mbox_pfvf = devm_kcalloc(&pf->pdev->dev, numvfs, 607 sizeof(struct mbox), GFP_KERNEL); 608 if (!pf->mbox_pfvf) 609 return -ENOMEM; 610 611 pf->mbox_pfvf_wq = alloc_workqueue("otx2_pfvf_mailbox", 612 WQ_UNBOUND | WQ_HIGHPRI | 613 WQ_MEM_RECLAIM, 0); 614 if (!pf->mbox_pfvf_wq) 615 return -ENOMEM; 616 617 /* For CN20K, PF allocates mbox memory in DRAM and writes PF/VF 618 * regions/offsets in RVU_PF_VF_MBOX_ADDR, the RVU_PFX_FUNC_PFAF_MBOX 619 * gives the aliased address to access PF/VF mailbox regions. 620 */ 621 if (is_cn20k(pf->pdev)) { 622 hwbase = (void __iomem *)cn20k_pfvf_mbox_alloc(pf, numvfs); 623 } else { 624 /* On CN10K platform, PF <-> VF mailbox region follows after 625 * PF <-> AF mailbox region. 626 */ 627 if (test_bit(CN10K_MBOX, &pf->hw.cap_flag)) 628 base = pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM) + 629 MBOX_SIZE; 630 else 631 base = readq(pf->reg_base + RVU_PF_VF_BAR4_ADDR); 632 633 hwbase = ioremap_wc(base, MBOX_SIZE * pf->total_vfs); 634 if (!hwbase) { 635 err = -ENOMEM; 636 goto free_wq; 637 } 638 } 639 640 mbox = &pf->mbox_pfvf[0]; 641 err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base, 642 MBOX_DIR_PFVF, numvfs); 643 if (err) 644 goto free_iomem; 645 646 err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base, 647 MBOX_DIR_PFVF_UP, numvfs); 648 if (err) 649 goto free_iomem; 650 651 for (vf = 0; vf < numvfs; vf++) { 652 mbox->pfvf = pf; 653 INIT_WORK(&mbox->mbox_wrk, otx2_pfvf_mbox_handler); 654 INIT_WORK(&mbox->mbox_up_wrk, otx2_pfvf_mbox_up_handler); 655 mbox++; 656 } 657 658 return 0; 659 660 free_iomem: 661 if (hwbase && !(is_cn20k(pf->pdev))) 662 iounmap(hwbase); 663 free_wq: 664 destroy_workqueue(pf->mbox_pfvf_wq); 665 return err; 666 } 667 668 static void otx2_pfvf_mbox_destroy(struct otx2_nic *pf) 669 { 670 struct mbox *mbox = &pf->mbox_pfvf[0]; 671 672 if (!mbox) 673 return; 674 675 if (pf->mbox_pfvf_wq) { 676 destroy_workqueue(pf->mbox_pfvf_wq); 677 pf->mbox_pfvf_wq = NULL; 678 } 679 680 if (mbox->mbox.hwbase && !is_cn20k(pf->pdev)) 681 iounmap(mbox->mbox.hwbase); 682 else 683 qmem_free(&pf->pdev->dev, pf->pfvf_mbox_addr); 684 685 otx2_mbox_destroy(&mbox->mbox); 686 } 687 688 static void otx2_enable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 689 { 690 /* Clear PF <=> VF mailbox IRQ */ 691 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull); 692 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull); 693 694 /* Enable PF <=> VF mailbox IRQ */ 695 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 696 if (numvfs > 64) { 697 numvfs -= 64; 698 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(1), 699 INTR_MASK(numvfs)); 700 } 701 } 702 703 static void otx2_disable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 704 { 705 int vector; 706 707 if (is_cn20k(pf->pdev)) 708 return cn20k_disable_pfvf_mbox_intr(pf, numvfs); 709 710 /* Disable PF <=> VF mailbox IRQ */ 711 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(0), ~0ull); 712 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(1), ~0ull); 713 714 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull); 715 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0); 716 free_irq(vector, pf); 717 718 if (numvfs > 64) { 719 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull); 720 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX1); 721 free_irq(vector, pf); 722 } 723 } 724 725 static int otx2_register_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 726 { 727 struct otx2_hw *hw = &pf->hw; 728 char *irq_name; 729 int err; 730 731 if (is_cn20k(pf->pdev)) 732 return cn20k_register_pfvf_mbox_intr(pf, numvfs); 733 734 /* Register MBOX0 interrupt handler */ 735 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX0 * NAME_SIZE]; 736 if (pf->pcifunc) 737 snprintf(irq_name, NAME_SIZE, 738 "RVUPF%d_VF Mbox0", rvu_get_pf(pf->pdev, pf->pcifunc)); 739 else 740 snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox0"); 741 err = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0), 742 otx2_pfvf_mbox_intr_handler, 0, irq_name, pf); 743 if (err) { 744 dev_err(pf->dev, 745 "RVUPF: IRQ registration failed for PFVF mbox0 irq\n"); 746 return err; 747 } 748 749 if (numvfs > 64) { 750 /* Register MBOX1 interrupt handler */ 751 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX1 * NAME_SIZE]; 752 if (pf->pcifunc) 753 snprintf(irq_name, NAME_SIZE, 754 "RVUPF%d_VF Mbox1", 755 rvu_get_pf(pf->pdev, pf->pcifunc)); 756 else 757 snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox1"); 758 err = request_irq(pci_irq_vector(pf->pdev, 759 RVU_PF_INT_VEC_VFPF_MBOX1), 760 otx2_pfvf_mbox_intr_handler, 761 0, irq_name, pf); 762 if (err) { 763 dev_err(pf->dev, 764 "RVUPF: IRQ registration failed for PFVF mbox1 irq\n"); 765 return err; 766 } 767 } 768 769 otx2_enable_pfvf_mbox_intr(pf, numvfs); 770 771 return 0; 772 } 773 774 static void otx2_process_pfaf_mbox_msg(struct otx2_nic *pf, 775 struct mbox_msghdr *msg) 776 { 777 int devid; 778 779 if (msg->id >= MBOX_MSG_MAX) { 780 dev_err(pf->dev, 781 "Mbox msg with unknown ID 0x%x\n", msg->id); 782 return; 783 } 784 785 if (msg->sig != OTX2_MBOX_RSP_SIG) { 786 dev_err(pf->dev, 787 "Mbox msg with wrong signature %x, ID 0x%x\n", 788 msg->sig, msg->id); 789 return; 790 } 791 792 /* message response heading VF */ 793 devid = msg->pcifunc & RVU_PFVF_FUNC_MASK; 794 if (devid) { 795 struct otx2_vf_config *config = &pf->vf_configs[devid - 1]; 796 struct delayed_work *dwork; 797 798 switch (msg->id) { 799 case MBOX_MSG_NIX_LF_START_RX: 800 config->intf_down = false; 801 dwork = &config->link_event_work; 802 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 803 break; 804 case MBOX_MSG_NIX_LF_STOP_RX: 805 config->intf_down = true; 806 break; 807 } 808 809 return; 810 } 811 812 switch (msg->id) { 813 case MBOX_MSG_READY: 814 pf->pcifunc = msg->pcifunc; 815 break; 816 case MBOX_MSG_MSIX_OFFSET: 817 mbox_handler_msix_offset(pf, (struct msix_offset_rsp *)msg); 818 break; 819 case MBOX_MSG_NPA_LF_ALLOC: 820 mbox_handler_npa_lf_alloc(pf, (struct npa_lf_alloc_rsp *)msg); 821 break; 822 case MBOX_MSG_NIX_LF_ALLOC: 823 mbox_handler_nix_lf_alloc(pf, (struct nix_lf_alloc_rsp *)msg); 824 break; 825 case MBOX_MSG_NIX_BP_ENABLE: 826 mbox_handler_nix_bp_enable(pf, (struct nix_bp_cfg_rsp *)msg); 827 break; 828 case MBOX_MSG_CGX_STATS: 829 mbox_handler_cgx_stats(pf, (struct cgx_stats_rsp *)msg); 830 break; 831 case MBOX_MSG_CGX_FEC_STATS: 832 mbox_handler_cgx_fec_stats(pf, (struct cgx_fec_stats_rsp *)msg); 833 break; 834 default: 835 if (msg->rc) 836 dev_err(pf->dev, 837 "Mbox msg response has err %d, ID 0x%x\n", 838 msg->rc, msg->id); 839 break; 840 } 841 } 842 843 static void otx2_pfaf_mbox_handler(struct work_struct *work) 844 { 845 struct otx2_mbox_dev *mdev; 846 struct mbox_hdr *rsp_hdr; 847 struct mbox_msghdr *msg; 848 struct otx2_mbox *mbox; 849 struct mbox *af_mbox; 850 struct otx2_nic *pf; 851 int offset, id; 852 u16 num_msgs; 853 854 af_mbox = container_of(work, struct mbox, mbox_wrk); 855 mbox = &af_mbox->mbox; 856 mdev = &mbox->dev[0]; 857 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 858 num_msgs = rsp_hdr->num_msgs; 859 860 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); 861 pf = af_mbox->pfvf; 862 863 trace_otx2_msg_status(pf->pdev, "PF-AF down queue handler(response)", 864 num_msgs); 865 866 for (id = 0; id < num_msgs; id++) { 867 msg = (struct mbox_msghdr *)(mdev->mbase + offset); 868 otx2_process_pfaf_mbox_msg(pf, msg); 869 offset = mbox->rx_start + msg->next_msgoff; 870 if (mdev->msgs_acked == (num_msgs - 1)) 871 __otx2_mbox_reset(mbox, 0); 872 mdev->msgs_acked++; 873 } 874 875 } 876 877 static void otx2_handle_link_event(struct otx2_nic *pf) 878 { 879 struct cgx_link_user_info *linfo = &pf->linfo; 880 struct net_device *netdev = pf->netdev; 881 882 if (pf->flags & OTX2_FLAG_PORT_UP) 883 return; 884 885 pr_info("%s NIC Link is %s %d Mbps %s duplex\n", netdev->name, 886 linfo->link_up ? "UP" : "DOWN", linfo->speed, 887 linfo->full_duplex ? "Full" : "Half"); 888 if (linfo->link_up) { 889 netif_carrier_on(netdev); 890 netif_tx_start_all_queues(netdev); 891 } else { 892 netif_tx_stop_all_queues(netdev); 893 netif_carrier_off(netdev); 894 } 895 } 896 897 static int otx2_mbox_up_handler_rep_event_up_notify(struct otx2_nic *pf, 898 struct rep_event *info, 899 struct msg_rsp *rsp) 900 { 901 struct net_device *netdev = pf->netdev; 902 903 if (info->event == RVU_EVENT_MTU_CHANGE) { 904 netdev->mtu = info->evt_data.mtu; 905 return 0; 906 } 907 908 if (info->event == RVU_EVENT_PORT_STATE) { 909 if (info->evt_data.port_state) { 910 pf->flags |= OTX2_FLAG_PORT_UP; 911 netif_carrier_on(netdev); 912 netif_tx_start_all_queues(netdev); 913 } else { 914 pf->flags &= ~OTX2_FLAG_PORT_UP; 915 netif_tx_stop_all_queues(netdev); 916 netif_carrier_off(netdev); 917 } 918 return 0; 919 } 920 #ifdef CONFIG_RVU_ESWITCH 921 rvu_event_up_notify(pf, info); 922 #endif 923 return 0; 924 } 925 926 int otx2_mbox_up_handler_mcs_intr_notify(struct otx2_nic *pf, 927 struct mcs_intr_info *event, 928 struct msg_rsp *rsp) 929 { 930 cn10k_handle_mcs_event(pf, event); 931 932 return 0; 933 } 934 935 int otx2_mbox_up_handler_cgx_link_event(struct otx2_nic *pf, 936 struct cgx_link_info_msg *msg, 937 struct msg_rsp *rsp) 938 { 939 int i; 940 941 /* Copy the link info sent by AF */ 942 pf->linfo = msg->link_info; 943 944 /* notify VFs about link event */ 945 for (i = 0; i < pci_num_vf(pf->pdev); i++) { 946 struct otx2_vf_config *config = &pf->vf_configs[i]; 947 struct delayed_work *dwork = &config->link_event_work; 948 949 if (config->intf_down) 950 continue; 951 952 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 953 } 954 955 /* interface has not been fully configured yet */ 956 if (pf->flags & OTX2_FLAG_INTF_DOWN) 957 return 0; 958 959 otx2_handle_link_event(pf); 960 return 0; 961 } 962 963 static int otx2_process_mbox_msg_up(struct otx2_nic *pf, 964 struct mbox_msghdr *req) 965 { 966 /* Check if valid, if not reply with a invalid msg */ 967 if (req->sig != OTX2_MBOX_REQ_SIG) { 968 otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id); 969 return -ENODEV; 970 } 971 972 switch (req->id) { 973 #define M(_name, _id, _fn_name, _req_type, _rsp_type) \ 974 case _id: { \ 975 struct _rsp_type *rsp; \ 976 int err; \ 977 \ 978 rsp = (struct _rsp_type *)otx2_mbox_alloc_msg( \ 979 &pf->mbox.mbox_up, 0, \ 980 sizeof(struct _rsp_type)); \ 981 if (!rsp) \ 982 return -ENOMEM; \ 983 \ 984 rsp->hdr.id = _id; \ 985 rsp->hdr.sig = OTX2_MBOX_RSP_SIG; \ 986 rsp->hdr.pcifunc = 0; \ 987 rsp->hdr.rc = 0; \ 988 \ 989 err = otx2_mbox_up_handler_ ## _fn_name( \ 990 pf, (struct _req_type *)req, rsp); \ 991 return err; \ 992 } 993 MBOX_UP_CGX_MESSAGES 994 MBOX_UP_MCS_MESSAGES 995 MBOX_UP_REP_MESSAGES 996 #undef M 997 break; 998 default: 999 otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id); 1000 return -ENODEV; 1001 } 1002 return 0; 1003 } 1004 1005 static void otx2_pfaf_mbox_up_handler(struct work_struct *work) 1006 { 1007 struct mbox *af_mbox = container_of(work, struct mbox, mbox_up_wrk); 1008 struct otx2_mbox *mbox = &af_mbox->mbox_up; 1009 struct otx2_mbox_dev *mdev = &mbox->dev[0]; 1010 struct otx2_nic *pf = af_mbox->pfvf; 1011 int offset, id, devid = 0; 1012 struct mbox_hdr *rsp_hdr; 1013 struct mbox_msghdr *msg; 1014 u16 num_msgs; 1015 1016 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1017 num_msgs = rsp_hdr->num_msgs; 1018 1019 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); 1020 1021 trace_otx2_msg_status(pf->pdev, "PF-AF up queue handler(notification)", 1022 num_msgs); 1023 1024 for (id = 0; id < num_msgs; id++) { 1025 msg = (struct mbox_msghdr *)(mdev->mbase + offset); 1026 1027 devid = msg->pcifunc & RVU_PFVF_FUNC_MASK; 1028 /* Skip processing VF's messages */ 1029 if (!devid) 1030 otx2_process_mbox_msg_up(pf, msg); 1031 offset = mbox->rx_start + msg->next_msgoff; 1032 } 1033 /* Forward to VF iff VFs are really present */ 1034 if (devid && pci_num_vf(pf->pdev)) { 1035 otx2_forward_vf_mbox_msgs(pf, &pf->mbox.mbox_up, 1036 MBOX_DIR_PFVF_UP, devid - 1, 1037 num_msgs); 1038 return; 1039 } 1040 1041 otx2_mbox_msg_send(mbox, 0); 1042 } 1043 1044 irqreturn_t otx2_pfaf_mbox_intr_handler(int irq, void *pf_irq) 1045 { 1046 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 1047 struct mbox *mw = &pf->mbox; 1048 struct otx2_mbox_dev *mdev; 1049 struct otx2_mbox *mbox; 1050 struct mbox_hdr *hdr; 1051 u64 mbox_data; 1052 1053 /* Clear the IRQ */ 1054 otx2_write64(pf, RVU_PF_INT, BIT_ULL(0)); 1055 1056 1057 mbox_data = otx2_read64(pf, RVU_PF_PFAF_MBOX0); 1058 1059 if (mbox_data & MBOX_UP_MSG) { 1060 mbox_data &= ~MBOX_UP_MSG; 1061 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 1062 1063 mbox = &mw->mbox_up; 1064 mdev = &mbox->dev[0]; 1065 otx2_sync_mbox_bbuf(mbox, 0); 1066 1067 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1068 if (hdr->num_msgs) 1069 queue_work(pf->mbox_wq, &mw->mbox_up_wrk); 1070 1071 trace_otx2_msg_interrupt(pf->pdev, "UP message from AF to PF", 1072 BIT_ULL(0)); 1073 1074 trace_otx2_msg_status(pf->pdev, "PF-AF up work queued(interrupt)", 1075 hdr->num_msgs); 1076 } 1077 1078 if (mbox_data & MBOX_DOWN_MSG) { 1079 mbox_data &= ~MBOX_DOWN_MSG; 1080 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 1081 1082 mbox = &mw->mbox; 1083 mdev = &mbox->dev[0]; 1084 otx2_sync_mbox_bbuf(mbox, 0); 1085 1086 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1087 if (hdr->num_msgs) 1088 queue_work(pf->mbox_wq, &mw->mbox_wrk); 1089 1090 trace_otx2_msg_interrupt(pf->pdev, "DOWN reply from AF to PF", 1091 BIT_ULL(0)); 1092 1093 trace_otx2_msg_status(pf->pdev, "PF-AF down work queued(interrupt)", 1094 hdr->num_msgs); 1095 } 1096 1097 return IRQ_HANDLED; 1098 } 1099 1100 void otx2_disable_mbox_intr(struct otx2_nic *pf) 1101 { 1102 int vector; 1103 1104 /* Disable AF => PF mailbox IRQ */ 1105 if (!is_cn20k(pf->pdev)) { 1106 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX); 1107 otx2_write64(pf, RVU_PF_INT_ENA_W1C, BIT_ULL(0)); 1108 } else { 1109 vector = pci_irq_vector(pf->pdev, 1110 RVU_MBOX_PF_INT_VEC_AFPF_MBOX); 1111 otx2_write64(pf, RVU_PF_INT_ENA_W1C, 1112 BIT_ULL(0) | BIT_ULL(1)); 1113 } 1114 free_irq(vector, pf); 1115 } 1116 EXPORT_SYMBOL(otx2_disable_mbox_intr); 1117 1118 int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af) 1119 { 1120 struct otx2_hw *hw = &pf->hw; 1121 struct msg_req *req; 1122 char *irq_name; 1123 int err; 1124 1125 /* Register mailbox interrupt handler */ 1126 if (!is_cn20k(pf->pdev)) { 1127 irq_name = &hw->irq_name[RVU_PF_INT_VEC_AFPF_MBOX * NAME_SIZE]; 1128 snprintf(irq_name, NAME_SIZE, "RVUPF%d AFPF Mbox", 1129 rvu_get_pf(pf->pdev, pf->pcifunc)); 1130 err = request_irq(pci_irq_vector 1131 (pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX), 1132 pf->hw_ops->pfaf_mbox_intr_handler, 1133 0, irq_name, pf); 1134 } else { 1135 irq_name = &hw->irq_name[RVU_MBOX_PF_INT_VEC_AFPF_MBOX * 1136 NAME_SIZE]; 1137 snprintf(irq_name, NAME_SIZE, "RVUPF%d AFPF Mbox", 1138 rvu_get_pf(pf->pdev, pf->pcifunc)); 1139 err = request_irq(pci_irq_vector 1140 (pf->pdev, RVU_MBOX_PF_INT_VEC_AFPF_MBOX), 1141 pf->hw_ops->pfaf_mbox_intr_handler, 1142 0, irq_name, pf); 1143 } 1144 if (err) { 1145 dev_err(pf->dev, 1146 "RVUPF: IRQ registration failed for PFAF mbox irq\n"); 1147 return err; 1148 } 1149 1150 /* Enable mailbox interrupt for msgs coming from AF. 1151 * First clear to avoid spurious interrupts, if any. 1152 */ 1153 if (!is_cn20k(pf->pdev)) { 1154 otx2_write64(pf, RVU_PF_INT, BIT_ULL(0)); 1155 otx2_write64(pf, RVU_PF_INT_ENA_W1S, BIT_ULL(0)); 1156 } else { 1157 otx2_write64(pf, RVU_PF_INT, BIT_ULL(0) | BIT_ULL(1)); 1158 otx2_write64(pf, RVU_PF_INT_ENA_W1S, BIT_ULL(0) | 1159 BIT_ULL(1)); 1160 } 1161 1162 if (!probe_af) 1163 return 0; 1164 1165 /* Check mailbox communication with AF */ 1166 req = otx2_mbox_alloc_msg_ready(&pf->mbox); 1167 if (!req) { 1168 otx2_disable_mbox_intr(pf); 1169 return -ENOMEM; 1170 } 1171 err = otx2_sync_mbox_msg(&pf->mbox); 1172 if (err) { 1173 dev_warn(pf->dev, 1174 "AF not responding to mailbox, deferring probe\n"); 1175 otx2_disable_mbox_intr(pf); 1176 return -EPROBE_DEFER; 1177 } 1178 1179 return 0; 1180 } 1181 1182 void otx2_pfaf_mbox_destroy(struct otx2_nic *pf) 1183 { 1184 struct mbox *mbox = &pf->mbox; 1185 1186 if (pf->mbox_wq) { 1187 destroy_workqueue(pf->mbox_wq); 1188 pf->mbox_wq = NULL; 1189 } 1190 1191 if (mbox->mbox.hwbase && !is_cn20k(pf->pdev)) 1192 iounmap((void __iomem *)mbox->mbox.hwbase); 1193 1194 otx2_mbox_destroy(&mbox->mbox); 1195 otx2_mbox_destroy(&mbox->mbox_up); 1196 } 1197 EXPORT_SYMBOL(otx2_pfaf_mbox_destroy); 1198 1199 int otx2_pfaf_mbox_init(struct otx2_nic *pf) 1200 { 1201 struct mbox *mbox = &pf->mbox; 1202 void __iomem *hwbase; 1203 int err; 1204 1205 mbox->pfvf = pf; 1206 pf->mbox_wq = alloc_ordered_workqueue("otx2_pfaf_mailbox", 1207 WQ_HIGHPRI | WQ_MEM_RECLAIM); 1208 if (!pf->mbox_wq) 1209 return -ENOMEM; 1210 1211 /* For CN20K, AF allocates mbox memory in DRAM and writes PF 1212 * regions/offsets in RVU_MBOX_AF_PFX_ADDR, the RVU_PFX_FUNC_PFAF_MBOX 1213 * gives the aliased address to access AF/PF mailbox regions. 1214 */ 1215 if (is_cn20k(pf->pdev)) 1216 hwbase = pf->reg_base + RVU_PFX_FUNC_PFAF_MBOX + 1217 ((u64)BLKADDR_MBOX << RVU_FUNC_BLKADDR_SHIFT); 1218 else 1219 /* Mailbox is a reserved memory (in RAM) region shared between 1220 * admin function (i.e AF) and this PF, shouldn't be mapped as 1221 * device memory to allow unaligned accesses. 1222 */ 1223 hwbase = ioremap_wc(pci_resource_start 1224 (pf->pdev, PCI_MBOX_BAR_NUM), MBOX_SIZE); 1225 if (!hwbase) { 1226 dev_err(pf->dev, "Unable to map PFAF mailbox region\n"); 1227 err = -ENOMEM; 1228 goto exit; 1229 } 1230 1231 err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base, 1232 MBOX_DIR_PFAF, 1); 1233 if (err) 1234 goto exit; 1235 1236 err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base, 1237 MBOX_DIR_PFAF_UP, 1); 1238 if (err) 1239 goto exit; 1240 1241 err = otx2_mbox_bbuf_init(mbox, pf->pdev); 1242 if (err) 1243 goto exit; 1244 1245 INIT_WORK(&mbox->mbox_wrk, otx2_pfaf_mbox_handler); 1246 INIT_WORK(&mbox->mbox_up_wrk, otx2_pfaf_mbox_up_handler); 1247 mutex_init(&mbox->lock); 1248 1249 return 0; 1250 exit: 1251 otx2_pfaf_mbox_destroy(pf); 1252 return err; 1253 } 1254 1255 static int otx2_cgx_config_linkevents(struct otx2_nic *pf, bool enable) 1256 { 1257 struct msg_req *msg; 1258 int err; 1259 1260 mutex_lock(&pf->mbox.lock); 1261 if (enable) 1262 msg = otx2_mbox_alloc_msg_cgx_start_linkevents(&pf->mbox); 1263 else 1264 msg = otx2_mbox_alloc_msg_cgx_stop_linkevents(&pf->mbox); 1265 1266 if (!msg) { 1267 mutex_unlock(&pf->mbox.lock); 1268 return -ENOMEM; 1269 } 1270 1271 err = otx2_sync_mbox_msg(&pf->mbox); 1272 mutex_unlock(&pf->mbox.lock); 1273 return err; 1274 } 1275 1276 int otx2_reset_mac_stats(struct otx2_nic *pfvf) 1277 { 1278 struct msg_req *req; 1279 int err; 1280 1281 mutex_lock(&pfvf->mbox.lock); 1282 req = otx2_mbox_alloc_msg_cgx_stats_rst(&pfvf->mbox); 1283 if (!req) { 1284 mutex_unlock(&pfvf->mbox.lock); 1285 return -ENOMEM; 1286 } 1287 1288 err = otx2_sync_mbox_msg(&pfvf->mbox); 1289 mutex_unlock(&pfvf->mbox.lock); 1290 return err; 1291 } 1292 1293 static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable) 1294 { 1295 struct msg_req *msg; 1296 int err; 1297 1298 if (enable && !bitmap_empty(pf->flow_cfg->dmacflt_bmap, 1299 pf->flow_cfg->dmacflt_max_flows)) 1300 netdev_warn(pf->netdev, 1301 "CGX/RPM internal loopback might not work as DMAC filters are active\n"); 1302 1303 mutex_lock(&pf->mbox.lock); 1304 if (enable) 1305 msg = otx2_mbox_alloc_msg_cgx_intlbk_enable(&pf->mbox); 1306 else 1307 msg = otx2_mbox_alloc_msg_cgx_intlbk_disable(&pf->mbox); 1308 1309 if (!msg) { 1310 mutex_unlock(&pf->mbox.lock); 1311 return -ENOMEM; 1312 } 1313 1314 err = otx2_sync_mbox_msg(&pf->mbox); 1315 mutex_unlock(&pf->mbox.lock); 1316 return err; 1317 } 1318 1319 int otx2_set_real_num_queues(struct net_device *netdev, 1320 int tx_queues, int rx_queues) 1321 { 1322 int err; 1323 1324 err = netif_set_real_num_tx_queues(netdev, tx_queues); 1325 if (err) { 1326 netdev_err(netdev, 1327 "Failed to set no of Tx queues: %d\n", tx_queues); 1328 return err; 1329 } 1330 1331 err = netif_set_real_num_rx_queues(netdev, rx_queues); 1332 if (err) 1333 netdev_err(netdev, 1334 "Failed to set no of Rx queues: %d\n", rx_queues); 1335 return err; 1336 } 1337 EXPORT_SYMBOL(otx2_set_real_num_queues); 1338 1339 static char *nix_sqoperr_e_str[NIX_SQOPERR_MAX] = { 1340 "NIX_SQOPERR_OOR", 1341 "NIX_SQOPERR_CTX_FAULT", 1342 "NIX_SQOPERR_CTX_POISON", 1343 "NIX_SQOPERR_DISABLED", 1344 "NIX_SQOPERR_SIZE_ERR", 1345 "NIX_SQOPERR_OFLOW", 1346 "NIX_SQOPERR_SQB_NULL", 1347 "NIX_SQOPERR_SQB_FAULT", 1348 "NIX_SQOPERR_SQE_SZ_ZERO", 1349 }; 1350 1351 static char *nix_mnqerr_e_str[NIX_MNQERR_MAX] = { 1352 "NIX_MNQERR_SQ_CTX_FAULT", 1353 "NIX_MNQERR_SQ_CTX_POISON", 1354 "NIX_MNQERR_SQB_FAULT", 1355 "NIX_MNQERR_SQB_POISON", 1356 "NIX_MNQERR_TOTAL_ERR", 1357 "NIX_MNQERR_LSO_ERR", 1358 "NIX_MNQERR_CQ_QUERY_ERR", 1359 "NIX_MNQERR_MAX_SQE_SIZE_ERR", 1360 "NIX_MNQERR_MAXLEN_ERR", 1361 "NIX_MNQERR_SQE_SIZEM1_ZERO", 1362 }; 1363 1364 static char *nix_snd_status_e_str[NIX_SND_STATUS_MAX] = { 1365 [NIX_SND_STATUS_GOOD] = "NIX_SND_STATUS_GOOD", 1366 [NIX_SND_STATUS_SQ_CTX_FAULT] = "NIX_SND_STATUS_SQ_CTX_FAULT", 1367 [NIX_SND_STATUS_SQ_CTX_POISON] = "NIX_SND_STATUS_SQ_CTX_POISON", 1368 [NIX_SND_STATUS_SQB_FAULT] = "NIX_SND_STATUS_SQB_FAULT", 1369 [NIX_SND_STATUS_SQB_POISON] = "NIX_SND_STATUS_SQB_POISON", 1370 [NIX_SND_STATUS_HDR_ERR] = "NIX_SND_STATUS_HDR_ERR", 1371 [NIX_SND_STATUS_EXT_ERR] = "NIX_SND_STATUS_EXT_ERR", 1372 [NIX_SND_STATUS_JUMP_FAULT] = "NIX_SND_STATUS_JUMP_FAULT", 1373 [NIX_SND_STATUS_JUMP_POISON] = "NIX_SND_STATUS_JUMP_POISON", 1374 [NIX_SND_STATUS_CRC_ERR] = "NIX_SND_STATUS_CRC_ERR", 1375 [NIX_SND_STATUS_IMM_ERR] = "NIX_SND_STATUS_IMM_ERR", 1376 [NIX_SND_STATUS_SG_ERR] = "NIX_SND_STATUS_SG_ERR", 1377 [NIX_SND_STATUS_MEM_ERR] = "NIX_SND_STATUS_MEM_ERR", 1378 [NIX_SND_STATUS_INVALID_SUBDC] = "NIX_SND_STATUS_INVALID_SUBDC", 1379 [NIX_SND_STATUS_SUBDC_ORDER_ERR] = "NIX_SND_STATUS_SUBDC_ORDER_ERR", 1380 [NIX_SND_STATUS_DATA_FAULT] = "NIX_SND_STATUS_DATA_FAULT", 1381 [NIX_SND_STATUS_DATA_POISON] = "NIX_SND_STATUS_DATA_POISON", 1382 [NIX_SND_STATUS_NPC_DROP_ACTION] = "NIX_SND_STATUS_NPC_DROP_ACTION", 1383 [NIX_SND_STATUS_LOCK_VIOL] = "NIX_SND_STATUS_LOCK_VIOL", 1384 [NIX_SND_STATUS_NPC_UCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_UCAST_CHAN_ERR", 1385 [NIX_SND_STATUS_NPC_MCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_MCAST_CHAN_ERR", 1386 [NIX_SND_STATUS_NPC_MCAST_ABORT] = "NIX_SND_STATUS_NPC_MCAST_ABORT", 1387 [NIX_SND_STATUS_NPC_VTAG_PTR_ERR] = "NIX_SND_STATUS_NPC_VTAG_PTR_ERR", 1388 [NIX_SND_STATUS_NPC_VTAG_SIZE_ERR] = "NIX_SND_STATUS_NPC_VTAG_SIZE_ERR", 1389 [NIX_SND_STATUS_SEND_MEM_FAULT] = "NIX_SND_STATUS_SEND_MEM_FAULT", 1390 [NIX_SND_STATUS_SEND_STATS_ERR] = "NIX_SND_STATUS_SEND_STATS_ERR", 1391 }; 1392 1393 static irqreturn_t otx2_q_intr_handler(int irq, void *data) 1394 { 1395 struct otx2_nic *pf = data; 1396 struct otx2_snd_queue *sq; 1397 void __iomem *ptr; 1398 u64 val, qidx = 0; 1399 1400 /* CQ */ 1401 for (qidx = 0; qidx < pf->qset.cq_cnt; qidx++) { 1402 ptr = otx2_get_regaddr(pf, NIX_LF_CQ_OP_INT); 1403 val = otx2_atomic64_add((qidx << 44), ptr); 1404 1405 otx2_write64(pf, NIX_LF_CQ_OP_INT, (qidx << 44) | 1406 (val & NIX_CQERRINT_BITS)); 1407 if (!(val & (NIX_CQERRINT_BITS | BIT_ULL(42)))) 1408 continue; 1409 1410 if (val & BIT_ULL(42)) { 1411 netdev_err(pf->netdev, 1412 "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1413 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1414 } else { 1415 if (val & BIT_ULL(NIX_CQERRINT_DOOR_ERR)) 1416 netdev_err(pf->netdev, "CQ%lld: Doorbell error", 1417 qidx); 1418 if (val & BIT_ULL(NIX_CQERRINT_CQE_FAULT)) 1419 netdev_err(pf->netdev, 1420 "CQ%lld: Memory fault on CQE write to LLC/DRAM", 1421 qidx); 1422 } 1423 1424 schedule_work(&pf->reset_task); 1425 } 1426 1427 /* SQ */ 1428 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1429 u64 sq_op_err_dbg, mnq_err_dbg, snd_err_dbg; 1430 u8 sq_op_err_code, mnq_err_code, snd_err_code; 1431 1432 sq = &pf->qset.sq[qidx]; 1433 if (!sq->sqb_ptrs) 1434 continue; 1435 1436 /* Below debug registers captures first errors corresponding to 1437 * those registers. We don't have to check against SQ qid as 1438 * these are fatal errors. 1439 */ 1440 1441 ptr = otx2_get_regaddr(pf, NIX_LF_SQ_OP_INT); 1442 val = otx2_atomic64_add((qidx << 44), ptr); 1443 otx2_write64(pf, NIX_LF_SQ_OP_INT, (qidx << 44) | 1444 (val & NIX_SQINT_BITS)); 1445 1446 if (val & BIT_ULL(42)) { 1447 netdev_err(pf->netdev, 1448 "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1449 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1450 goto done; 1451 } 1452 1453 sq_op_err_dbg = otx2_read64(pf, NIX_LF_SQ_OP_ERR_DBG); 1454 if (!(sq_op_err_dbg & BIT(44))) 1455 goto chk_mnq_err_dbg; 1456 1457 sq_op_err_code = FIELD_GET(GENMASK(7, 0), sq_op_err_dbg); 1458 netdev_err(pf->netdev, 1459 "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(0x%llx) err=%s(%#x)\n", 1460 qidx, sq_op_err_dbg, 1461 nix_sqoperr_e_str[sq_op_err_code], 1462 sq_op_err_code); 1463 1464 otx2_write64(pf, NIX_LF_SQ_OP_ERR_DBG, BIT_ULL(44)); 1465 1466 if (sq_op_err_code == NIX_SQOPERR_SQB_NULL) 1467 goto chk_mnq_err_dbg; 1468 1469 /* Err is not NIX_SQOPERR_SQB_NULL, call aq function to read SQ structure. 1470 * TODO: But we are in irq context. How to call mbox functions which does sleep 1471 */ 1472 1473 chk_mnq_err_dbg: 1474 mnq_err_dbg = otx2_read64(pf, NIX_LF_MNQ_ERR_DBG); 1475 if (!(mnq_err_dbg & BIT(44))) 1476 goto chk_snd_err_dbg; 1477 1478 mnq_err_code = FIELD_GET(GENMASK(7, 0), mnq_err_dbg); 1479 netdev_err(pf->netdev, 1480 "SQ%lld: NIX_LF_MNQ_ERR_DBG(0x%llx) err=%s(%#x)\n", 1481 qidx, mnq_err_dbg, nix_mnqerr_e_str[mnq_err_code], 1482 mnq_err_code); 1483 otx2_write64(pf, NIX_LF_MNQ_ERR_DBG, BIT_ULL(44)); 1484 1485 chk_snd_err_dbg: 1486 snd_err_dbg = otx2_read64(pf, NIX_LF_SEND_ERR_DBG); 1487 if (snd_err_dbg & BIT(44)) { 1488 snd_err_code = FIELD_GET(GENMASK(7, 0), snd_err_dbg); 1489 netdev_err(pf->netdev, 1490 "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s(%#x)\n", 1491 qidx, snd_err_dbg, 1492 nix_snd_status_e_str[snd_err_code], 1493 snd_err_code); 1494 otx2_write64(pf, NIX_LF_SEND_ERR_DBG, BIT_ULL(44)); 1495 } 1496 1497 done: 1498 /* Print values and reset */ 1499 if (val & BIT_ULL(NIX_SQINT_SQB_ALLOC_FAIL)) 1500 netdev_err(pf->netdev, "SQ%lld: SQB allocation failed", 1501 qidx); 1502 1503 schedule_work(&pf->reset_task); 1504 } 1505 1506 return IRQ_HANDLED; 1507 } 1508 1509 irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq) 1510 { 1511 struct otx2_cq_poll *cq_poll = (struct otx2_cq_poll *)cq_irq; 1512 struct otx2_nic *pf = (struct otx2_nic *)cq_poll->dev; 1513 int qidx = cq_poll->cint_idx; 1514 1515 /* Disable interrupts. 1516 * 1517 * Completion interrupts behave in a level-triggered interrupt 1518 * fashion, and hence have to be cleared only after it is serviced. 1519 */ 1520 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 1521 1522 /* Schedule NAPI */ 1523 pf->napi_events++; 1524 napi_schedule_irqoff(&cq_poll->napi); 1525 1526 return IRQ_HANDLED; 1527 } 1528 EXPORT_SYMBOL(otx2_cq_intr_handler); 1529 1530 void otx2_disable_napi(struct otx2_nic *pf) 1531 { 1532 struct otx2_qset *qset = &pf->qset; 1533 struct otx2_cq_poll *cq_poll; 1534 struct work_struct *work; 1535 int qidx; 1536 1537 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1538 cq_poll = &qset->napi[qidx]; 1539 work = &cq_poll->dim.work; 1540 if (work->func) 1541 cancel_work_sync(work); 1542 napi_disable(&cq_poll->napi); 1543 netif_napi_del(&cq_poll->napi); 1544 } 1545 } 1546 EXPORT_SYMBOL(otx2_disable_napi); 1547 1548 static void otx2_free_cq_res(struct otx2_nic *pf) 1549 { 1550 struct otx2_qset *qset = &pf->qset; 1551 struct otx2_cq_queue *cq; 1552 int qidx; 1553 1554 /* Disable CQs */ 1555 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_CQ, false); 1556 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1557 cq = &qset->cq[qidx]; 1558 qmem_free(pf->dev, cq->cqe); 1559 } 1560 } 1561 1562 static void otx2_free_sq_res(struct otx2_nic *pf) 1563 { 1564 struct otx2_qset *qset = &pf->qset; 1565 struct otx2_snd_queue *sq; 1566 int qidx; 1567 1568 /* Disable SQs */ 1569 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_SQ, false); 1570 /* Free SQB pointers */ 1571 otx2_sq_free_sqbs(pf); 1572 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1573 sq = &qset->sq[qidx]; 1574 /* Skip freeing Qos queues if they are not initialized */ 1575 if (!sq->sqe) 1576 continue; 1577 qmem_free(pf->dev, sq->sqe); 1578 qmem_free(pf->dev, sq->sqe_ring); 1579 qmem_free(pf->dev, sq->cpt_resp); 1580 qmem_free(pf->dev, sq->tso_hdrs); 1581 kfree(sq->sg); 1582 kfree(sq->sqb_ptrs); 1583 } 1584 } 1585 1586 static int otx2_get_rbuf_size(struct otx2_nic *pf, int mtu) 1587 { 1588 int frame_size; 1589 int total_size; 1590 int rbuf_size; 1591 1592 if (pf->hw.rbuf_len) 1593 return ALIGN(pf->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM; 1594 1595 /* The data transferred by NIX to memory consists of actual packet 1596 * plus additional data which has timestamp and/or EDSA/HIGIG2 1597 * headers if interface is configured in corresponding modes. 1598 * NIX transfers entire data using 6 segments/buffers and writes 1599 * a CQE_RX descriptor with those segment addresses. First segment 1600 * has additional data prepended to packet. Also software omits a 1601 * headroom of 128 bytes in each segment. Hence the total size of 1602 * memory needed to receive a packet with 'mtu' is: 1603 * frame size = mtu + additional data; 1604 * memory = frame_size + headroom * 6; 1605 * each receive buffer size = memory / 6; 1606 */ 1607 frame_size = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; 1608 total_size = frame_size + OTX2_HEAD_ROOM * 6; 1609 rbuf_size = total_size / 6; 1610 1611 return ALIGN(rbuf_size, 2048); 1612 } 1613 1614 int otx2_init_hw_resources(struct otx2_nic *pf) 1615 { 1616 struct nix_lf_free_req *free_req; 1617 struct mbox *mbox = &pf->mbox; 1618 struct otx2_hw *hw = &pf->hw; 1619 struct msg_req *req; 1620 int err = 0, lvl; 1621 1622 /* Set required NPA LF's pool counts 1623 * Auras and Pools are used in a 1:1 mapping, 1624 * so, aura count = pool count. 1625 */ 1626 hw->rqpool_cnt = hw->rx_queues; 1627 hw->sqpool_cnt = otx2_get_total_tx_queues(pf); 1628 hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt; 1629 1630 if (!otx2_rep_dev(pf->pdev)) { 1631 /* Maximum hardware supported transmit length */ 1632 pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN; 1633 pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu); 1634 } 1635 1636 mutex_lock(&mbox->lock); 1637 /* NPA init */ 1638 err = otx2_config_npa(pf); 1639 if (err) 1640 goto exit; 1641 1642 /* NIX init */ 1643 err = otx2_config_nix(pf); 1644 if (err) 1645 goto err_free_npa_lf; 1646 1647 /* Default disable backpressure on NIX-CPT */ 1648 otx2_nix_cpt_config_bp(pf, false); 1649 1650 /* Enable backpressure for CGX mapped PF/VFs */ 1651 if (!is_otx2_lbkvf(pf->pdev)) 1652 otx2_nix_config_bp(pf, true); 1653 1654 /* Init Auras and pools used by NIX RQ, for free buffer ptrs */ 1655 err = otx2_rq_aura_pool_init(pf); 1656 if (err) { 1657 mutex_unlock(&mbox->lock); 1658 goto err_free_nix_lf; 1659 } 1660 /* Init Auras and pools used by NIX SQ, for queueing SQEs */ 1661 err = otx2_sq_aura_pool_init(pf); 1662 if (err) { 1663 mutex_unlock(&mbox->lock); 1664 goto err_free_rq_ptrs; 1665 } 1666 1667 err = otx2_txsch_alloc(pf); 1668 if (err) { 1669 mutex_unlock(&mbox->lock); 1670 goto err_free_sq_ptrs; 1671 } 1672 1673 #ifdef CONFIG_DCB 1674 if (pf->pfc_en) { 1675 err = otx2_pfc_txschq_alloc(pf); 1676 if (err) { 1677 mutex_unlock(&mbox->lock); 1678 goto err_free_sq_ptrs; 1679 } 1680 } 1681 #endif 1682 1683 err = otx2_config_nix_queues(pf); 1684 if (err) { 1685 mutex_unlock(&mbox->lock); 1686 goto err_free_txsch; 1687 } 1688 1689 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) { 1690 int idx; 1691 1692 for (idx = 0; idx < pf->hw.txschq_cnt[lvl]; idx++) { 1693 err = otx2_txschq_config(pf, lvl, idx, false); 1694 if (err) { 1695 dev_err(pf->dev, "Failed to config TXSCH\n"); 1696 mutex_unlock(&mbox->lock); 1697 goto err_free_nix_queues; 1698 } 1699 } 1700 } 1701 1702 #ifdef CONFIG_DCB 1703 if (pf->pfc_en) { 1704 err = otx2_pfc_txschq_config(pf); 1705 if (err) { 1706 mutex_unlock(&mbox->lock); 1707 goto err_free_nix_queues; 1708 } 1709 } 1710 #endif 1711 1712 mutex_unlock(&mbox->lock); 1713 return err; 1714 1715 err_free_nix_queues: 1716 otx2_free_sq_res(pf); 1717 otx2_free_cq_res(pf); 1718 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1719 err_free_txsch: 1720 otx2_txschq_stop(pf); 1721 err_free_sq_ptrs: 1722 otx2_sq_free_sqbs(pf); 1723 err_free_rq_ptrs: 1724 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1725 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1726 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1727 otx2_aura_pool_free(pf); 1728 err_free_nix_lf: 1729 mutex_lock(&mbox->lock); 1730 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1731 if (free_req) { 1732 free_req->flags = NIX_LF_DISABLE_FLOWS; 1733 if (otx2_sync_mbox_msg(mbox)) 1734 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1735 } 1736 err_free_npa_lf: 1737 /* Reset NPA LF */ 1738 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1739 if (req) { 1740 if (otx2_sync_mbox_msg(mbox)) 1741 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1742 } 1743 exit: 1744 mutex_unlock(&mbox->lock); 1745 return err; 1746 } 1747 EXPORT_SYMBOL(otx2_init_hw_resources); 1748 1749 void otx2_free_hw_resources(struct otx2_nic *pf) 1750 { 1751 struct otx2_qset *qset = &pf->qset; 1752 struct nix_lf_free_req *free_req; 1753 struct mbox *mbox = &pf->mbox; 1754 struct otx2_cq_queue *cq; 1755 struct msg_req *req; 1756 int qidx; 1757 1758 /* Ensure all SQE are processed */ 1759 otx2_sqb_flush(pf); 1760 1761 /* Stop transmission */ 1762 otx2_txschq_stop(pf); 1763 1764 #ifdef CONFIG_DCB 1765 if (pf->pfc_en) 1766 otx2_pfc_txschq_stop(pf); 1767 #endif 1768 1769 if (!otx2_rep_dev(pf->pdev)) 1770 otx2_clean_qos_queues(pf); 1771 1772 mutex_lock(&mbox->lock); 1773 /* Disable backpressure */ 1774 if (!is_otx2_lbkvf(pf->pdev)) 1775 otx2_nix_config_bp(pf, false); 1776 mutex_unlock(&mbox->lock); 1777 1778 /* Disable RQs */ 1779 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1780 1781 /*Dequeue all CQEs */ 1782 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1783 cq = &qset->cq[qidx]; 1784 if (cq->cq_type == CQ_RX) 1785 otx2_cleanup_rx_cqes(pf, cq, qidx); 1786 else 1787 otx2_cleanup_tx_cqes(pf, cq); 1788 } 1789 otx2_free_pending_sqe(pf); 1790 1791 otx2_free_sq_res(pf); 1792 1793 /* Free RQ buffer pointers*/ 1794 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1795 1796 otx2_free_cq_res(pf); 1797 1798 /* Free all ingress bandwidth profiles allocated */ 1799 if (!otx2_rep_dev(pf->pdev)) 1800 cn10k_free_all_ipolicers(pf); 1801 1802 mutex_lock(&mbox->lock); 1803 /* Reset NIX LF */ 1804 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1805 if (free_req) { 1806 free_req->flags = NIX_LF_DISABLE_FLOWS; 1807 if (!(pf->flags & OTX2_FLAG_PF_SHUTDOWN)) 1808 free_req->flags |= NIX_LF_DONT_FREE_TX_VTAG; 1809 if (otx2_sync_mbox_msg(mbox)) 1810 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1811 } 1812 mutex_unlock(&mbox->lock); 1813 1814 /* Disable NPA Pool and Aura hw context */ 1815 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1816 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1817 otx2_aura_pool_free(pf); 1818 1819 mutex_lock(&mbox->lock); 1820 /* Reset NPA LF */ 1821 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1822 if (req) { 1823 if (otx2_sync_mbox_msg(mbox)) 1824 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1825 } 1826 mutex_unlock(&mbox->lock); 1827 } 1828 EXPORT_SYMBOL(otx2_free_hw_resources); 1829 1830 static bool otx2_promisc_use_mce_list(struct otx2_nic *pfvf) 1831 { 1832 int vf; 1833 1834 /* The AF driver will determine whether to allow the VF netdev or not */ 1835 if (is_otx2_vf(pfvf->pcifunc)) 1836 return true; 1837 1838 /* check if there are any trusted VFs associated with the PF netdev */ 1839 for (vf = 0; vf < pci_num_vf(pfvf->pdev); vf++) 1840 if (pfvf->vf_configs[vf].trusted) 1841 return true; 1842 return false; 1843 } 1844 1845 static void otx2_do_set_rx_mode(struct otx2_nic *pf) 1846 { 1847 struct net_device *netdev = pf->netdev; 1848 struct nix_rx_mode *req; 1849 bool promisc = false; 1850 1851 if (!(netdev->flags & IFF_UP)) 1852 return; 1853 1854 if ((netdev->flags & IFF_PROMISC) || 1855 (netdev_uc_count(netdev) > pf->flow_cfg->ucast_flt_cnt)) { 1856 promisc = true; 1857 } 1858 1859 /* Write unicast address to mcam entries or del from mcam */ 1860 if (!promisc && netdev->priv_flags & IFF_UNICAST_FLT) 1861 __dev_uc_sync(netdev, otx2_add_macfilter, otx2_del_macfilter); 1862 1863 mutex_lock(&pf->mbox.lock); 1864 req = otx2_mbox_alloc_msg_nix_set_rx_mode(&pf->mbox); 1865 if (!req) { 1866 mutex_unlock(&pf->mbox.lock); 1867 return; 1868 } 1869 1870 req->mode = NIX_RX_MODE_UCAST; 1871 1872 if (promisc) 1873 req->mode |= NIX_RX_MODE_PROMISC; 1874 if (netdev->flags & (IFF_ALLMULTI | IFF_MULTICAST)) 1875 req->mode |= NIX_RX_MODE_ALLMULTI; 1876 1877 if (otx2_promisc_use_mce_list(pf)) 1878 req->mode |= NIX_RX_MODE_USE_MCE; 1879 1880 otx2_sync_mbox_msg(&pf->mbox); 1881 mutex_unlock(&pf->mbox.lock); 1882 } 1883 1884 static void otx2_set_irq_coalesce(struct otx2_nic *pfvf) 1885 { 1886 int cint; 1887 1888 for (cint = 0; cint < pfvf->hw.cint_cnt; cint++) 1889 otx2_config_irq_coalescing(pfvf, cint); 1890 } 1891 1892 static void otx2_dim_work(struct work_struct *w) 1893 { 1894 struct dim_cq_moder cur_moder; 1895 struct otx2_cq_poll *cq_poll; 1896 struct otx2_nic *pfvf; 1897 struct dim *dim; 1898 1899 dim = container_of(w, struct dim, work); 1900 cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); 1901 cq_poll = container_of(dim, struct otx2_cq_poll, dim); 1902 pfvf = (struct otx2_nic *)cq_poll->dev; 1903 pfvf->hw.cq_time_wait = (cur_moder.usec > CQ_TIMER_THRESH_MAX) ? 1904 CQ_TIMER_THRESH_MAX : cur_moder.usec; 1905 pfvf->hw.cq_ecount_wait = (cur_moder.pkts > NAPI_POLL_WEIGHT) ? 1906 NAPI_POLL_WEIGHT : cur_moder.pkts; 1907 otx2_set_irq_coalesce(pfvf); 1908 dim->state = DIM_START_MEASURE; 1909 } 1910 1911 void otx2_free_queue_mem(struct otx2_qset *qset) 1912 { 1913 kfree(qset->sq); 1914 qset->sq = NULL; 1915 kfree(qset->cq); 1916 qset->cq = NULL; 1917 kfree(qset->rq); 1918 qset->rq = NULL; 1919 kfree(qset->napi); 1920 qset->napi = NULL; 1921 } 1922 EXPORT_SYMBOL(otx2_free_queue_mem); 1923 1924 int otx2_alloc_queue_mem(struct otx2_nic *pf) 1925 { 1926 struct otx2_qset *qset = &pf->qset; 1927 struct otx2_cq_poll *cq_poll; 1928 1929 1930 /* RQ and SQs are mapped to different CQs, 1931 * so find out max CQ IRQs (i.e CINTs) needed. 1932 */ 1933 pf->hw.non_qos_queues = pf->hw.tx_queues + pf->hw.xdp_queues; 1934 pf->hw.cint_cnt = max3(pf->hw.rx_queues, pf->hw.tx_queues, 1935 pf->hw.tc_tx_queues); 1936 1937 pf->qset.cq_cnt = pf->hw.rx_queues + otx2_get_total_tx_queues(pf); 1938 1939 qset->napi = kcalloc(pf->hw.cint_cnt, sizeof(*cq_poll), GFP_KERNEL); 1940 if (!qset->napi) 1941 return -ENOMEM; 1942 1943 /* CQ size of RQ */ 1944 qset->rqe_cnt = qset->rqe_cnt ? qset->rqe_cnt : Q_COUNT(Q_SIZE_256); 1945 /* CQ size of SQ */ 1946 qset->sqe_cnt = qset->sqe_cnt ? qset->sqe_cnt : Q_COUNT(Q_SIZE_4K); 1947 1948 qset->cq = kcalloc(pf->qset.cq_cnt, 1949 sizeof(struct otx2_cq_queue), GFP_KERNEL); 1950 if (!qset->cq) 1951 goto err_free_mem; 1952 1953 qset->sq = kcalloc(otx2_get_total_tx_queues(pf), 1954 sizeof(struct otx2_snd_queue), GFP_KERNEL); 1955 if (!qset->sq) 1956 goto err_free_mem; 1957 1958 qset->rq = kcalloc(pf->hw.rx_queues, 1959 sizeof(struct otx2_rcv_queue), GFP_KERNEL); 1960 if (!qset->rq) 1961 goto err_free_mem; 1962 1963 return 0; 1964 1965 err_free_mem: 1966 otx2_free_queue_mem(qset); 1967 return -ENOMEM; 1968 } 1969 EXPORT_SYMBOL(otx2_alloc_queue_mem); 1970 1971 int otx2_open(struct net_device *netdev) 1972 { 1973 struct otx2_nic *pf = netdev_priv(netdev); 1974 struct otx2_cq_poll *cq_poll = NULL; 1975 struct otx2_qset *qset = &pf->qset; 1976 int err = 0, qidx, vec; 1977 char *irq_name; 1978 1979 netif_carrier_off(netdev); 1980 1981 err = otx2_alloc_queue_mem(pf); 1982 if (err) 1983 return err; 1984 1985 err = otx2_init_hw_resources(pf); 1986 if (err) 1987 goto err_free_mem; 1988 1989 /* Register NAPI handler */ 1990 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1991 cq_poll = &qset->napi[qidx]; 1992 cq_poll->cint_idx = qidx; 1993 /* RQ0 & SQ0 are mapped to CINT0 and so on.. 1994 * 'cq_ids[0]' points to RQ's CQ and 1995 * 'cq_ids[1]' points to SQ's CQ and 1996 * 'cq_ids[2]' points to XDP's CQ and 1997 */ 1998 cq_poll->cq_ids[CQ_RX] = 1999 (qidx < pf->hw.rx_queues) ? qidx : CINT_INVALID_CQ; 2000 cq_poll->cq_ids[CQ_TX] = (qidx < pf->hw.tx_queues) ? 2001 qidx + pf->hw.rx_queues : CINT_INVALID_CQ; 2002 if (pf->xdp_prog) 2003 cq_poll->cq_ids[CQ_XDP] = (qidx < pf->hw.xdp_queues) ? 2004 (qidx + pf->hw.rx_queues + 2005 pf->hw.tx_queues) : 2006 CINT_INVALID_CQ; 2007 else 2008 cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ; 2009 2010 cq_poll->cq_ids[CQ_QOS] = (qidx < pf->hw.tc_tx_queues) ? 2011 (qidx + pf->hw.rx_queues + 2012 pf->hw.non_qos_queues) : 2013 CINT_INVALID_CQ; 2014 2015 cq_poll->dev = (void *)pf; 2016 cq_poll->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE; 2017 INIT_WORK(&cq_poll->dim.work, otx2_dim_work); 2018 netif_napi_add(netdev, &cq_poll->napi, otx2_napi_handler); 2019 napi_enable(&cq_poll->napi); 2020 } 2021 2022 /* Set maximum frame size allowed in HW */ 2023 err = otx2_hw_set_mtu(pf, netdev->mtu); 2024 if (err) 2025 goto err_disable_napi; 2026 2027 /* Setup segmentation algorithms, if failed, clear offload capability */ 2028 otx2_setup_segmentation(pf); 2029 2030 /* Initialize RSS */ 2031 err = otx2_rss_init(pf); 2032 if (err) 2033 goto err_disable_napi; 2034 2035 /* Register Queue IRQ handlers */ 2036 vec = pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START; 2037 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 2038 2039 snprintf(irq_name, NAME_SIZE, "%s-qerr", pf->netdev->name); 2040 2041 err = request_irq(pci_irq_vector(pf->pdev, vec), 2042 otx2_q_intr_handler, 0, irq_name, pf); 2043 if (err) { 2044 dev_err(pf->dev, 2045 "RVUPF%d: IRQ registration failed for QERR\n", 2046 rvu_get_pf(pf->pdev, pf->pcifunc)); 2047 goto err_disable_napi; 2048 } 2049 2050 /* Enable QINT IRQ */ 2051 otx2_write64(pf, NIX_LF_QINTX_ENA_W1S(0), BIT_ULL(0)); 2052 2053 /* Register CQ IRQ handlers */ 2054 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 2055 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 2056 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 2057 int name_len; 2058 2059 name_len = snprintf(irq_name, NAME_SIZE, "%s-rxtx-%d", 2060 pf->netdev->name, qidx); 2061 if (name_len >= NAME_SIZE) { 2062 dev_err(pf->dev, 2063 "RVUPF%d: IRQ registration failed for CQ%d, irq name is too long\n", 2064 rvu_get_pf(pf->pdev, pf->pcifunc), qidx); 2065 err = -EINVAL; 2066 goto err_free_cints; 2067 } 2068 2069 err = request_irq(pci_irq_vector(pf->pdev, vec), 2070 otx2_cq_intr_handler, 0, irq_name, 2071 &qset->napi[qidx]); 2072 if (err) { 2073 dev_err(pf->dev, 2074 "RVUPF%d: IRQ registration failed for CQ%d\n", 2075 rvu_get_pf(pf->pdev, pf->pcifunc), qidx); 2076 goto err_free_cints; 2077 } 2078 vec++; 2079 2080 otx2_config_irq_coalescing(pf, qidx); 2081 2082 /* Enable CQ IRQ */ 2083 otx2_write64(pf, NIX_LF_CINTX_INT(qidx), BIT_ULL(0)); 2084 otx2_write64(pf, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0)); 2085 } 2086 2087 otx2_set_cints_affinity(pf); 2088 2089 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 2090 otx2_enable_rxvlan(pf, true); 2091 2092 /* When reinitializing enable time stamping if it is enabled before */ 2093 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) { 2094 pf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 2095 otx2_config_hw_tx_tstamp(pf, true); 2096 } 2097 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) { 2098 pf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 2099 otx2_config_hw_rx_tstamp(pf, true); 2100 } 2101 2102 pf->flags &= ~OTX2_FLAG_INTF_DOWN; 2103 pf->flags &= ~OTX2_FLAG_PORT_UP; 2104 /* 'intf_down' may be checked on any cpu */ 2105 smp_wmb(); 2106 2107 /* Enable QoS configuration before starting tx queues */ 2108 otx2_qos_config_txschq(pf); 2109 2110 /* we have already received link status notification */ 2111 if (pf->linfo.link_up && !(pf->pcifunc & RVU_PFVF_FUNC_MASK)) 2112 otx2_handle_link_event(pf); 2113 2114 /* Install DMAC Filters */ 2115 if (pf->flags & OTX2_FLAG_DMACFLTR_SUPPORT) 2116 otx2_dmacflt_reinstall_flows(pf); 2117 2118 otx2_tc_apply_ingress_police_rules(pf); 2119 2120 err = otx2_rxtx_enable(pf, true); 2121 /* If a mbox communication error happens at this point then interface 2122 * will end up in a state such that it is in down state but hardware 2123 * mcam entries are enabled to receive the packets. Hence disable the 2124 * packet I/O. 2125 */ 2126 if (err == -EIO) 2127 goto err_disable_rxtx; 2128 else if (err) 2129 goto err_tx_stop_queues; 2130 2131 otx2_do_set_rx_mode(pf); 2132 2133 return 0; 2134 2135 err_disable_rxtx: 2136 otx2_rxtx_enable(pf, false); 2137 err_tx_stop_queues: 2138 netif_tx_stop_all_queues(netdev); 2139 netif_carrier_off(netdev); 2140 pf->flags |= OTX2_FLAG_INTF_DOWN; 2141 err_free_cints: 2142 otx2_free_cints(pf, qidx); 2143 vec = pci_irq_vector(pf->pdev, 2144 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 2145 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 2146 free_irq(vec, pf); 2147 err_disable_napi: 2148 otx2_disable_napi(pf); 2149 otx2_free_hw_resources(pf); 2150 err_free_mem: 2151 otx2_free_queue_mem(qset); 2152 return err; 2153 } 2154 EXPORT_SYMBOL(otx2_open); 2155 2156 int otx2_stop(struct net_device *netdev) 2157 { 2158 struct otx2_nic *pf = netdev_priv(netdev); 2159 struct otx2_cq_poll *cq_poll = NULL; 2160 struct otx2_qset *qset = &pf->qset; 2161 struct otx2_rss_info *rss; 2162 int qidx, vec, wrk; 2163 2164 /* If the DOWN flag is set resources are already freed */ 2165 if (pf->flags & OTX2_FLAG_INTF_DOWN) 2166 return 0; 2167 2168 netif_carrier_off(netdev); 2169 netif_tx_stop_all_queues(netdev); 2170 2171 pf->flags |= OTX2_FLAG_INTF_DOWN; 2172 /* 'intf_down' may be checked on any cpu */ 2173 smp_wmb(); 2174 2175 /* First stop packet Rx/Tx */ 2176 otx2_rxtx_enable(pf, false); 2177 2178 /* Clear RSS enable flag */ 2179 rss = &pf->hw.rss_info; 2180 rss->enable = false; 2181 if (!netif_is_rxfh_configured(netdev)) 2182 kfree(rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]); 2183 2184 /* Cleanup Queue IRQ */ 2185 vec = pci_irq_vector(pf->pdev, 2186 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 2187 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 2188 free_irq(vec, pf); 2189 2190 /* Cleanup CQ NAPI and IRQ */ 2191 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 2192 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 2193 /* Disable interrupt */ 2194 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 2195 2196 synchronize_irq(pci_irq_vector(pf->pdev, vec)); 2197 2198 cq_poll = &qset->napi[qidx]; 2199 napi_synchronize(&cq_poll->napi); 2200 vec++; 2201 } 2202 2203 netif_tx_disable(netdev); 2204 2205 for (wrk = 0; wrk < pf->qset.cq_cnt; wrk++) 2206 cancel_delayed_work_sync(&pf->refill_wrk[wrk].pool_refill_work); 2207 devm_kfree(pf->dev, pf->refill_wrk); 2208 2209 otx2_free_hw_resources(pf); 2210 otx2_free_cints(pf, pf->hw.cint_cnt); 2211 otx2_disable_napi(pf); 2212 2213 for (qidx = 0; qidx < netdev->num_tx_queues; qidx++) 2214 netdev_tx_reset_queue(netdev_get_tx_queue(netdev, qidx)); 2215 2216 otx2_free_queue_mem(qset); 2217 /* Do not clear RQ/SQ ringsize settings */ 2218 memset_startat(qset, 0, sqe_cnt); 2219 return 0; 2220 } 2221 EXPORT_SYMBOL(otx2_stop); 2222 2223 static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev) 2224 { 2225 struct otx2_nic *pf = netdev_priv(netdev); 2226 int qidx = skb_get_queue_mapping(skb); 2227 struct otx2_snd_queue *sq; 2228 struct netdev_queue *txq; 2229 int sq_idx; 2230 2231 /* XDP SQs are not mapped with TXQs 2232 * advance qid to derive correct sq mapped with QOS 2233 */ 2234 sq_idx = (qidx >= pf->hw.tx_queues) ? (qidx + pf->hw.xdp_queues) : qidx; 2235 2236 /* Check for minimum and maximum packet length */ 2237 if (skb->len <= ETH_HLEN || 2238 (!skb_shinfo(skb)->gso_size && skb->len > pf->tx_max_pktlen)) { 2239 dev_kfree_skb(skb); 2240 return NETDEV_TX_OK; 2241 } 2242 2243 sq = &pf->qset.sq[sq_idx]; 2244 txq = netdev_get_tx_queue(netdev, qidx); 2245 2246 if (!otx2_sq_append_skb(pf, txq, sq, skb, qidx)) { 2247 netif_tx_stop_queue(txq); 2248 2249 /* Check again, incase SQBs got freed up */ 2250 smp_mb(); 2251 if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb) 2252 > sq->sqe_thresh) 2253 netif_tx_wake_queue(txq); 2254 2255 return NETDEV_TX_BUSY; 2256 } 2257 2258 return NETDEV_TX_OK; 2259 } 2260 2261 static int otx2_qos_select_htb_queue(struct otx2_nic *pf, struct sk_buff *skb, 2262 u16 htb_maj_id) 2263 { 2264 u16 classid; 2265 2266 if ((TC_H_MAJ(skb->priority) >> 16) == htb_maj_id) 2267 classid = TC_H_MIN(skb->priority); 2268 else 2269 classid = READ_ONCE(pf->qos.defcls); 2270 2271 if (!classid) 2272 return 0; 2273 2274 return otx2_get_txq_by_classid(pf, classid); 2275 } 2276 2277 u16 otx2_select_queue(struct net_device *netdev, struct sk_buff *skb, 2278 struct net_device *sb_dev) 2279 { 2280 struct otx2_nic *pf = netdev_priv(netdev); 2281 bool qos_enabled; 2282 #ifdef CONFIG_DCB 2283 u8 vlan_prio; 2284 #endif 2285 int txq; 2286 2287 qos_enabled = netdev->real_num_tx_queues > pf->hw.tx_queues; 2288 if (unlikely(qos_enabled)) { 2289 /* This smp_load_acquire() pairs with smp_store_release() in 2290 * otx2_qos_root_add() called from htb offload root creation 2291 */ 2292 u16 htb_maj_id = smp_load_acquire(&pf->qos.maj_id); 2293 2294 if (unlikely(htb_maj_id)) { 2295 txq = otx2_qos_select_htb_queue(pf, skb, htb_maj_id); 2296 if (txq > 0) 2297 return txq; 2298 goto process_pfc; 2299 } 2300 } 2301 2302 process_pfc: 2303 #ifdef CONFIG_DCB 2304 if (!skb_vlan_tag_present(skb)) 2305 goto pick_tx; 2306 2307 vlan_prio = skb->vlan_tci >> 13; 2308 if ((vlan_prio > pf->hw.tx_queues - 1) || 2309 !pf->pfc_alloc_status[vlan_prio]) 2310 goto pick_tx; 2311 2312 return vlan_prio; 2313 2314 pick_tx: 2315 #endif 2316 txq = netdev_pick_tx(netdev, skb, NULL); 2317 if (unlikely(qos_enabled)) 2318 return txq % pf->hw.tx_queues; 2319 2320 return txq; 2321 } 2322 EXPORT_SYMBOL(otx2_select_queue); 2323 2324 static netdev_features_t otx2_fix_features(struct net_device *dev, 2325 netdev_features_t features) 2326 { 2327 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2328 features |= NETIF_F_HW_VLAN_STAG_RX; 2329 else 2330 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2331 2332 return features; 2333 } 2334 2335 static void otx2_set_rx_mode(struct net_device *netdev) 2336 { 2337 struct otx2_nic *pf = netdev_priv(netdev); 2338 2339 queue_work(pf->otx2_wq, &pf->rx_mode_work); 2340 } 2341 2342 static void otx2_rx_mode_wrk_handler(struct work_struct *work) 2343 { 2344 struct otx2_nic *pf = container_of(work, struct otx2_nic, rx_mode_work); 2345 2346 otx2_do_set_rx_mode(pf); 2347 } 2348 2349 static int otx2_set_features(struct net_device *netdev, 2350 netdev_features_t features) 2351 { 2352 netdev_features_t changed = features ^ netdev->features; 2353 struct otx2_nic *pf = netdev_priv(netdev); 2354 2355 if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev)) 2356 return otx2_cgx_config_loopback(pf, 2357 features & NETIF_F_LOOPBACK); 2358 2359 if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(netdev)) 2360 return otx2_enable_rxvlan(pf, 2361 features & NETIF_F_HW_VLAN_CTAG_RX); 2362 2363 if (changed & NETIF_F_HW_ESP) 2364 return cn10k_ipsec_ethtool_init(netdev, 2365 features & NETIF_F_HW_ESP); 2366 2367 return otx2_handle_ntuple_tc_features(netdev, features); 2368 } 2369 2370 static void otx2_reset_task(struct work_struct *work) 2371 { 2372 struct otx2_nic *pf = container_of(work, struct otx2_nic, reset_task); 2373 2374 if (!netif_running(pf->netdev)) 2375 return; 2376 2377 rtnl_lock(); 2378 otx2_stop(pf->netdev); 2379 pf->reset_count++; 2380 otx2_open(pf->netdev); 2381 netif_trans_update(pf->netdev); 2382 rtnl_unlock(); 2383 } 2384 2385 static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable) 2386 { 2387 struct msg_req *req; 2388 int err; 2389 2390 if (pfvf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED && enable) 2391 return 0; 2392 2393 mutex_lock(&pfvf->mbox.lock); 2394 if (enable) 2395 req = otx2_mbox_alloc_msg_cgx_ptp_rx_enable(&pfvf->mbox); 2396 else 2397 req = otx2_mbox_alloc_msg_cgx_ptp_rx_disable(&pfvf->mbox); 2398 if (!req) { 2399 mutex_unlock(&pfvf->mbox.lock); 2400 return -ENOMEM; 2401 } 2402 2403 err = otx2_sync_mbox_msg(&pfvf->mbox); 2404 if (err) { 2405 mutex_unlock(&pfvf->mbox.lock); 2406 return err; 2407 } 2408 2409 mutex_unlock(&pfvf->mbox.lock); 2410 if (enable) 2411 pfvf->flags |= OTX2_FLAG_RX_TSTAMP_ENABLED; 2412 else 2413 pfvf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 2414 return 0; 2415 } 2416 2417 static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable) 2418 { 2419 struct msg_req *req; 2420 int err; 2421 2422 if (pfvf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED && enable) 2423 return 0; 2424 2425 mutex_lock(&pfvf->mbox.lock); 2426 if (enable) 2427 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_enable(&pfvf->mbox); 2428 else 2429 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_disable(&pfvf->mbox); 2430 if (!req) { 2431 mutex_unlock(&pfvf->mbox.lock); 2432 return -ENOMEM; 2433 } 2434 2435 err = otx2_sync_mbox_msg(&pfvf->mbox); 2436 if (err) { 2437 mutex_unlock(&pfvf->mbox.lock); 2438 return err; 2439 } 2440 2441 mutex_unlock(&pfvf->mbox.lock); 2442 if (enable) 2443 pfvf->flags |= OTX2_FLAG_TX_TSTAMP_ENABLED; 2444 else 2445 pfvf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 2446 return 0; 2447 } 2448 2449 int otx2_config_hwtstamp(struct net_device *netdev, struct ifreq *ifr) 2450 { 2451 struct otx2_nic *pfvf = netdev_priv(netdev); 2452 struct hwtstamp_config config; 2453 2454 if (!pfvf->ptp) 2455 return -ENODEV; 2456 2457 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2458 return -EFAULT; 2459 2460 switch (config.tx_type) { 2461 case HWTSTAMP_TX_OFF: 2462 if (pfvf->flags & OTX2_FLAG_PTP_ONESTEP_SYNC) 2463 pfvf->flags &= ~OTX2_FLAG_PTP_ONESTEP_SYNC; 2464 2465 cancel_delayed_work(&pfvf->ptp->synctstamp_work); 2466 otx2_config_hw_tx_tstamp(pfvf, false); 2467 break; 2468 case HWTSTAMP_TX_ONESTEP_SYNC: 2469 if (!test_bit(CN10K_PTP_ONESTEP, &pfvf->hw.cap_flag)) 2470 return -ERANGE; 2471 pfvf->flags |= OTX2_FLAG_PTP_ONESTEP_SYNC; 2472 schedule_delayed_work(&pfvf->ptp->synctstamp_work, 2473 msecs_to_jiffies(500)); 2474 fallthrough; 2475 case HWTSTAMP_TX_ON: 2476 otx2_config_hw_tx_tstamp(pfvf, true); 2477 break; 2478 default: 2479 return -ERANGE; 2480 } 2481 2482 switch (config.rx_filter) { 2483 case HWTSTAMP_FILTER_NONE: 2484 otx2_config_hw_rx_tstamp(pfvf, false); 2485 break; 2486 case HWTSTAMP_FILTER_ALL: 2487 case HWTSTAMP_FILTER_SOME: 2488 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2489 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2490 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2491 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2492 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2493 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2494 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2495 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2496 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2497 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2498 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2499 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2500 otx2_config_hw_rx_tstamp(pfvf, true); 2501 config.rx_filter = HWTSTAMP_FILTER_ALL; 2502 break; 2503 default: 2504 return -ERANGE; 2505 } 2506 2507 memcpy(&pfvf->tstamp, &config, sizeof(config)); 2508 2509 return copy_to_user(ifr->ifr_data, &config, 2510 sizeof(config)) ? -EFAULT : 0; 2511 } 2512 EXPORT_SYMBOL(otx2_config_hwtstamp); 2513 2514 int otx2_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 2515 { 2516 struct otx2_nic *pfvf = netdev_priv(netdev); 2517 struct hwtstamp_config *cfg = &pfvf->tstamp; 2518 2519 switch (cmd) { 2520 case SIOCSHWTSTAMP: 2521 return otx2_config_hwtstamp(netdev, req); 2522 case SIOCGHWTSTAMP: 2523 return copy_to_user(req->ifr_data, cfg, 2524 sizeof(*cfg)) ? -EFAULT : 0; 2525 default: 2526 return -EOPNOTSUPP; 2527 } 2528 } 2529 EXPORT_SYMBOL(otx2_ioctl); 2530 2531 static int otx2_do_set_vf_mac(struct otx2_nic *pf, int vf, const u8 *mac) 2532 { 2533 struct npc_install_flow_req *req; 2534 int err; 2535 2536 mutex_lock(&pf->mbox.lock); 2537 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2538 if (!req) { 2539 err = -ENOMEM; 2540 goto out; 2541 } 2542 2543 ether_addr_copy(req->packet.dmac, mac); 2544 eth_broadcast_addr((u8 *)&req->mask.dmac); 2545 req->features = BIT_ULL(NPC_DMAC); 2546 req->channel = pf->hw.rx_chan_base; 2547 req->intf = NIX_INTF_RX; 2548 req->default_rule = 1; 2549 req->append = 1; 2550 req->vf = vf + 1; 2551 req->op = NIX_RX_ACTION_DEFAULT; 2552 2553 err = otx2_sync_mbox_msg(&pf->mbox); 2554 out: 2555 mutex_unlock(&pf->mbox.lock); 2556 return err; 2557 } 2558 2559 static int otx2_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 2560 { 2561 struct otx2_nic *pf = netdev_priv(netdev); 2562 struct pci_dev *pdev = pf->pdev; 2563 struct otx2_vf_config *config; 2564 int ret; 2565 2566 if (!netif_running(netdev)) 2567 return -EAGAIN; 2568 2569 if (vf >= pf->total_vfs) 2570 return -EINVAL; 2571 2572 if (!is_valid_ether_addr(mac)) 2573 return -EINVAL; 2574 2575 config = &pf->vf_configs[vf]; 2576 ether_addr_copy(config->mac, mac); 2577 2578 ret = otx2_do_set_vf_mac(pf, vf, mac); 2579 if (ret == 0) 2580 dev_info(&pdev->dev, 2581 "Load/Reload VF driver\n"); 2582 2583 return ret; 2584 } 2585 2586 static int otx2_do_set_vf_vlan(struct otx2_nic *pf, int vf, u16 vlan, u8 qos, 2587 __be16 proto) 2588 { 2589 struct otx2_flow_config *flow_cfg = pf->flow_cfg; 2590 struct nix_vtag_config_rsp *vtag_rsp; 2591 struct npc_delete_flow_req *del_req; 2592 struct nix_vtag_config *vtag_req; 2593 struct npc_install_flow_req *req; 2594 struct otx2_vf_config *config; 2595 int err = 0; 2596 u32 idx; 2597 2598 config = &pf->vf_configs[vf]; 2599 2600 if (!vlan && !config->vlan) 2601 goto out; 2602 2603 mutex_lock(&pf->mbox.lock); 2604 2605 /* free old tx vtag entry */ 2606 if (config->vlan) { 2607 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2608 if (!vtag_req) { 2609 err = -ENOMEM; 2610 goto out; 2611 } 2612 vtag_req->cfg_type = 0; 2613 vtag_req->tx.free_vtag0 = 1; 2614 vtag_req->tx.vtag0_idx = config->tx_vtag_idx; 2615 2616 err = otx2_sync_mbox_msg(&pf->mbox); 2617 if (err) 2618 goto out; 2619 } 2620 2621 if (!vlan && config->vlan) { 2622 /* rx */ 2623 del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox); 2624 if (!del_req) { 2625 err = -ENOMEM; 2626 goto out; 2627 } 2628 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2629 del_req->entry = 2630 flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2631 err = otx2_sync_mbox_msg(&pf->mbox); 2632 if (err) 2633 goto out; 2634 2635 /* tx */ 2636 del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox); 2637 if (!del_req) { 2638 err = -ENOMEM; 2639 goto out; 2640 } 2641 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX); 2642 del_req->entry = 2643 flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2644 err = otx2_sync_mbox_msg(&pf->mbox); 2645 2646 goto out; 2647 } 2648 2649 /* rx */ 2650 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2651 if (!req) { 2652 err = -ENOMEM; 2653 goto out; 2654 } 2655 2656 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2657 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2658 req->packet.vlan_tci = htons(vlan); 2659 req->mask.vlan_tci = htons(VLAN_VID_MASK); 2660 /* af fills the destination mac addr */ 2661 eth_broadcast_addr((u8 *)&req->mask.dmac); 2662 req->features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_DMAC); 2663 req->channel = pf->hw.rx_chan_base; 2664 req->intf = NIX_INTF_RX; 2665 req->vf = vf + 1; 2666 req->op = NIX_RX_ACTION_DEFAULT; 2667 req->vtag0_valid = true; 2668 req->vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE7; 2669 req->set_cntr = 1; 2670 2671 err = otx2_sync_mbox_msg(&pf->mbox); 2672 if (err) 2673 goto out; 2674 2675 /* tx */ 2676 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2677 if (!vtag_req) { 2678 err = -ENOMEM; 2679 goto out; 2680 } 2681 2682 /* configure tx vtag params */ 2683 vtag_req->vtag_size = VTAGSIZE_T4; 2684 vtag_req->cfg_type = 0; /* tx vlan cfg */ 2685 vtag_req->tx.cfg_vtag0 = 1; 2686 vtag_req->tx.vtag0 = ((u64)ntohs(proto) << 16) | vlan; 2687 2688 err = otx2_sync_mbox_msg(&pf->mbox); 2689 if (err) 2690 goto out; 2691 2692 vtag_rsp = (struct nix_vtag_config_rsp *)otx2_mbox_get_rsp 2693 (&pf->mbox.mbox, 0, &vtag_req->hdr); 2694 if (IS_ERR(vtag_rsp)) { 2695 err = PTR_ERR(vtag_rsp); 2696 goto out; 2697 } 2698 config->tx_vtag_idx = vtag_rsp->vtag0_idx; 2699 2700 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2701 if (!req) { 2702 err = -ENOMEM; 2703 goto out; 2704 } 2705 2706 eth_zero_addr((u8 *)&req->mask.dmac); 2707 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX); 2708 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2709 req->features = BIT_ULL(NPC_DMAC); 2710 req->channel = pf->hw.tx_chan_base; 2711 req->intf = NIX_INTF_TX; 2712 req->vf = vf + 1; 2713 req->op = NIX_TX_ACTIONOP_UCAST_DEFAULT; 2714 req->vtag0_def = vtag_rsp->vtag0_idx; 2715 req->vtag0_op = VTAG_INSERT; 2716 req->set_cntr = 1; 2717 2718 err = otx2_sync_mbox_msg(&pf->mbox); 2719 out: 2720 config->vlan = vlan; 2721 mutex_unlock(&pf->mbox.lock); 2722 return err; 2723 } 2724 2725 static int otx2_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos, 2726 __be16 proto) 2727 { 2728 struct otx2_nic *pf = netdev_priv(netdev); 2729 struct pci_dev *pdev = pf->pdev; 2730 2731 if (!netif_running(netdev)) 2732 return -EAGAIN; 2733 2734 if (vf >= pci_num_vf(pdev)) 2735 return -EINVAL; 2736 2737 /* qos is currently unsupported */ 2738 if (vlan >= VLAN_N_VID || qos) 2739 return -EINVAL; 2740 2741 if (proto != htons(ETH_P_8021Q)) 2742 return -EPROTONOSUPPORT; 2743 2744 if (!(pf->flags & OTX2_FLAG_VF_VLAN_SUPPORT)) 2745 return -EOPNOTSUPP; 2746 2747 return otx2_do_set_vf_vlan(pf, vf, vlan, qos, proto); 2748 } 2749 2750 static int otx2_get_vf_config(struct net_device *netdev, int vf, 2751 struct ifla_vf_info *ivi) 2752 { 2753 struct otx2_nic *pf = netdev_priv(netdev); 2754 struct pci_dev *pdev = pf->pdev; 2755 struct otx2_vf_config *config; 2756 2757 if (!netif_running(netdev)) 2758 return -EAGAIN; 2759 2760 if (vf >= pci_num_vf(pdev)) 2761 return -EINVAL; 2762 2763 config = &pf->vf_configs[vf]; 2764 ivi->vf = vf; 2765 ether_addr_copy(ivi->mac, config->mac); 2766 ivi->vlan = config->vlan; 2767 ivi->trusted = config->trusted; 2768 2769 return 0; 2770 } 2771 2772 static int otx2_xdp_xmit_tx(struct otx2_nic *pf, struct xdp_frame *xdpf, 2773 int qidx) 2774 { 2775 u64 dma_addr; 2776 int err = 0; 2777 2778 dma_addr = otx2_dma_map_page(pf, virt_to_page(xdpf->data), 2779 offset_in_page(xdpf->data), xdpf->len, 2780 DMA_TO_DEVICE); 2781 if (dma_mapping_error(pf->dev, dma_addr)) 2782 return -ENOMEM; 2783 2784 err = otx2_xdp_sq_append_pkt(pf, xdpf, dma_addr, xdpf->len, 2785 qidx, OTX2_XDP_REDIRECT); 2786 if (!err) { 2787 otx2_dma_unmap_page(pf, dma_addr, xdpf->len, DMA_TO_DEVICE); 2788 xdp_return_frame(xdpf); 2789 return -ENOMEM; 2790 } 2791 return 0; 2792 } 2793 2794 static int otx2_xdp_xmit(struct net_device *netdev, int n, 2795 struct xdp_frame **frames, u32 flags) 2796 { 2797 struct otx2_nic *pf = netdev_priv(netdev); 2798 int qidx = smp_processor_id(); 2799 struct otx2_snd_queue *sq; 2800 int drops = 0, i; 2801 2802 if (!netif_running(netdev)) 2803 return -ENETDOWN; 2804 2805 qidx += pf->hw.tx_queues; 2806 sq = pf->xdp_prog ? &pf->qset.sq[qidx] : NULL; 2807 2808 /* Abort xmit if xdp queue is not */ 2809 if (unlikely(!sq)) 2810 return -ENXIO; 2811 2812 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 2813 return -EINVAL; 2814 2815 for (i = 0; i < n; i++) { 2816 struct xdp_frame *xdpf = frames[i]; 2817 int err; 2818 2819 err = otx2_xdp_xmit_tx(pf, xdpf, qidx); 2820 if (err) 2821 drops++; 2822 } 2823 return n - drops; 2824 } 2825 2826 static int otx2_xdp_setup(struct otx2_nic *pf, struct bpf_prog *prog) 2827 { 2828 struct net_device *dev = pf->netdev; 2829 bool if_up = netif_running(pf->netdev); 2830 struct bpf_prog *old_prog; 2831 2832 if (prog && dev->mtu > MAX_XDP_MTU) { 2833 netdev_warn(dev, "Jumbo frames not yet supported with XDP\n"); 2834 return -EOPNOTSUPP; 2835 } 2836 2837 if (if_up) 2838 otx2_stop(pf->netdev); 2839 2840 old_prog = xchg(&pf->xdp_prog, prog); 2841 2842 if (old_prog) 2843 bpf_prog_put(old_prog); 2844 2845 if (pf->xdp_prog) 2846 bpf_prog_add(pf->xdp_prog, pf->hw.rx_queues - 1); 2847 2848 /* Network stack and XDP shared same rx queues. 2849 * Use separate tx queues for XDP and network stack. 2850 */ 2851 if (pf->xdp_prog) { 2852 pf->hw.xdp_queues = pf->hw.rx_queues; 2853 xdp_features_set_redirect_target(dev, false); 2854 } else { 2855 pf->hw.xdp_queues = 0; 2856 xdp_features_clear_redirect_target(dev); 2857 } 2858 2859 if (if_up) 2860 otx2_open(pf->netdev); 2861 2862 return 0; 2863 } 2864 2865 static int otx2_xdp(struct net_device *netdev, struct netdev_bpf *xdp) 2866 { 2867 struct otx2_nic *pf = netdev_priv(netdev); 2868 2869 switch (xdp->command) { 2870 case XDP_SETUP_PROG: 2871 return otx2_xdp_setup(pf, xdp->prog); 2872 case XDP_SETUP_XSK_POOL: 2873 return otx2_xsk_pool_setup(pf, xdp->xsk.pool, xdp->xsk.queue_id); 2874 default: 2875 return -EINVAL; 2876 } 2877 } 2878 2879 static int otx2_set_vf_permissions(struct otx2_nic *pf, int vf, 2880 int req_perm) 2881 { 2882 struct set_vf_perm *req; 2883 int rc; 2884 2885 mutex_lock(&pf->mbox.lock); 2886 req = otx2_mbox_alloc_msg_set_vf_perm(&pf->mbox); 2887 if (!req) { 2888 rc = -ENOMEM; 2889 goto out; 2890 } 2891 2892 /* Let AF reset VF permissions as sriov is disabled */ 2893 if (req_perm == OTX2_RESET_VF_PERM) { 2894 req->flags |= RESET_VF_PERM; 2895 } else if (req_perm == OTX2_TRUSTED_VF) { 2896 if (pf->vf_configs[vf].trusted) 2897 req->flags |= VF_TRUSTED; 2898 } 2899 2900 req->vf = vf; 2901 rc = otx2_sync_mbox_msg(&pf->mbox); 2902 out: 2903 mutex_unlock(&pf->mbox.lock); 2904 return rc; 2905 } 2906 2907 static int otx2_ndo_set_vf_trust(struct net_device *netdev, int vf, 2908 bool enable) 2909 { 2910 struct otx2_nic *pf = netdev_priv(netdev); 2911 struct pci_dev *pdev = pf->pdev; 2912 int rc; 2913 2914 if (vf >= pci_num_vf(pdev)) 2915 return -EINVAL; 2916 2917 if (pf->vf_configs[vf].trusted == enable) 2918 return 0; 2919 2920 pf->vf_configs[vf].trusted = enable; 2921 rc = otx2_set_vf_permissions(pf, vf, OTX2_TRUSTED_VF); 2922 2923 if (rc) { 2924 pf->vf_configs[vf].trusted = !enable; 2925 } else { 2926 netdev_info(pf->netdev, "VF %d is %strusted\n", 2927 vf, enable ? "" : "not "); 2928 otx2_set_rx_mode(netdev); 2929 } 2930 2931 return rc; 2932 } 2933 2934 static const struct net_device_ops otx2_netdev_ops = { 2935 .ndo_open = otx2_open, 2936 .ndo_stop = otx2_stop, 2937 .ndo_start_xmit = otx2_xmit, 2938 .ndo_select_queue = otx2_select_queue, 2939 .ndo_fix_features = otx2_fix_features, 2940 .ndo_set_mac_address = otx2_set_mac_address, 2941 .ndo_change_mtu = otx2_change_mtu, 2942 .ndo_set_rx_mode = otx2_set_rx_mode, 2943 .ndo_set_features = otx2_set_features, 2944 .ndo_tx_timeout = otx2_tx_timeout, 2945 .ndo_get_stats64 = otx2_get_stats64, 2946 .ndo_eth_ioctl = otx2_ioctl, 2947 .ndo_set_vf_mac = otx2_set_vf_mac, 2948 .ndo_set_vf_vlan = otx2_set_vf_vlan, 2949 .ndo_get_vf_config = otx2_get_vf_config, 2950 .ndo_bpf = otx2_xdp, 2951 .ndo_xsk_wakeup = otx2_xsk_wakeup, 2952 .ndo_xdp_xmit = otx2_xdp_xmit, 2953 .ndo_setup_tc = otx2_setup_tc, 2954 .ndo_set_vf_trust = otx2_ndo_set_vf_trust, 2955 }; 2956 2957 int otx2_wq_init(struct otx2_nic *pf) 2958 { 2959 pf->otx2_wq = create_singlethread_workqueue("otx2_wq"); 2960 if (!pf->otx2_wq) 2961 return -ENOMEM; 2962 2963 INIT_WORK(&pf->rx_mode_work, otx2_rx_mode_wrk_handler); 2964 INIT_WORK(&pf->reset_task, otx2_reset_task); 2965 return 0; 2966 } 2967 2968 int otx2_check_pf_usable(struct otx2_nic *nic) 2969 { 2970 u64 rev; 2971 2972 rev = otx2_read64(nic, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_RVUM)); 2973 rev = (rev >> 12) & 0xFF; 2974 /* Check if AF has setup revision for RVUM block, 2975 * otherwise this driver probe should be deferred 2976 * until AF driver comes up. 2977 */ 2978 if (!rev) { 2979 dev_warn(nic->dev, 2980 "AF is not initialized, deferring probe\n"); 2981 return -EPROBE_DEFER; 2982 } 2983 return 0; 2984 } 2985 2986 int otx2_realloc_msix_vectors(struct otx2_nic *pf) 2987 { 2988 struct otx2_hw *hw = &pf->hw; 2989 int num_vec, err; 2990 2991 /* NPA interrupts are inot registered, so alloc only 2992 * upto NIX vector offset. 2993 */ 2994 num_vec = hw->nix_msixoff; 2995 num_vec += NIX_LF_CINT_VEC_START + hw->max_queues; 2996 2997 otx2_disable_mbox_intr(pf); 2998 pci_free_irq_vectors(hw->pdev); 2999 err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX); 3000 if (err < 0) { 3001 dev_err(pf->dev, "%s: Failed to realloc %d IRQ vectors\n", 3002 __func__, num_vec); 3003 return err; 3004 } 3005 3006 return otx2_register_mbox_intr(pf, false); 3007 } 3008 EXPORT_SYMBOL(otx2_realloc_msix_vectors); 3009 3010 static int otx2_sriov_vfcfg_init(struct otx2_nic *pf) 3011 { 3012 int i; 3013 3014 pf->vf_configs = devm_kcalloc(pf->dev, pf->total_vfs, 3015 sizeof(struct otx2_vf_config), 3016 GFP_KERNEL); 3017 if (!pf->vf_configs) 3018 return -ENOMEM; 3019 3020 for (i = 0; i < pf->total_vfs; i++) { 3021 pf->vf_configs[i].pf = pf; 3022 pf->vf_configs[i].intf_down = true; 3023 pf->vf_configs[i].trusted = false; 3024 INIT_DELAYED_WORK(&pf->vf_configs[i].link_event_work, 3025 otx2_vf_link_event_task); 3026 } 3027 3028 return 0; 3029 } 3030 3031 static void otx2_sriov_vfcfg_cleanup(struct otx2_nic *pf) 3032 { 3033 int i; 3034 3035 if (!pf->vf_configs) 3036 return; 3037 3038 for (i = 0; i < pf->total_vfs; i++) { 3039 cancel_delayed_work_sync(&pf->vf_configs[i].link_event_work); 3040 otx2_set_vf_permissions(pf, i, OTX2_RESET_VF_PERM); 3041 } 3042 } 3043 3044 int otx2_init_rsrc(struct pci_dev *pdev, struct otx2_nic *pf) 3045 { 3046 struct device *dev = &pdev->dev; 3047 struct otx2_hw *hw = &pf->hw; 3048 int num_vec, err; 3049 3050 num_vec = pci_msix_vec_count(pdev); 3051 hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE, 3052 GFP_KERNEL); 3053 if (!hw->irq_name) 3054 return -ENOMEM; 3055 3056 hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec, 3057 sizeof(cpumask_var_t), GFP_KERNEL); 3058 if (!hw->affinity_mask) 3059 return -ENOMEM; 3060 3061 /* Map CSRs */ 3062 pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); 3063 if (!pf->reg_base) { 3064 dev_err(dev, "Unable to map physical function CSRs, aborting\n"); 3065 return -ENOMEM; 3066 } 3067 3068 err = otx2_check_pf_usable(pf); 3069 if (err) 3070 return err; 3071 3072 if (!is_cn20k(pf->pdev)) 3073 err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT, 3074 RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX); 3075 else 3076 err = pci_alloc_irq_vectors(hw->pdev, RVU_MBOX_PF_INT_VEC_CNT, 3077 RVU_MBOX_PF_INT_VEC_CNT, 3078 PCI_IRQ_MSIX); 3079 if (err < 0) { 3080 dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n", 3081 __func__, num_vec); 3082 return err; 3083 } 3084 3085 otx2_setup_dev_hw_settings(pf); 3086 3087 if (is_cn20k(pf->pdev)) 3088 cn20k_init(pf); 3089 else 3090 otx2_init_hw_ops(pf); 3091 3092 /* Init PF <=> AF mailbox stuff */ 3093 err = otx2_pfaf_mbox_init(pf); 3094 if (err) 3095 goto err_free_irq_vectors; 3096 3097 /* Register mailbox interrupt */ 3098 err = otx2_register_mbox_intr(pf, true); 3099 if (err) 3100 goto err_mbox_destroy; 3101 3102 /* Request AF to attach NPA and NIX LFs to this PF. 3103 * NIX and NPA LFs are needed for this PF to function as a NIC. 3104 */ 3105 err = otx2_attach_npa_nix(pf); 3106 if (err) 3107 goto err_disable_mbox_intr; 3108 3109 err = otx2_realloc_msix_vectors(pf); 3110 if (err) 3111 goto err_detach_rsrc; 3112 3113 err = cn10k_lmtst_init(pf); 3114 if (err) 3115 goto err_detach_rsrc; 3116 3117 return 0; 3118 3119 err_detach_rsrc: 3120 if (pf->hw.lmt_info) 3121 free_percpu(pf->hw.lmt_info); 3122 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3123 qmem_free(pf->dev, pf->dync_lmt); 3124 otx2_detach_resources(&pf->mbox); 3125 err_disable_mbox_intr: 3126 otx2_disable_mbox_intr(pf); 3127 err_mbox_destroy: 3128 otx2_pfaf_mbox_destroy(pf); 3129 err_free_irq_vectors: 3130 pci_free_irq_vectors(hw->pdev); 3131 3132 return err; 3133 } 3134 EXPORT_SYMBOL(otx2_init_rsrc); 3135 3136 static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3137 { 3138 struct device *dev = &pdev->dev; 3139 int err, qcount, qos_txqs; 3140 struct net_device *netdev; 3141 struct otx2_nic *pf; 3142 struct otx2_hw *hw; 3143 3144 err = pcim_enable_device(pdev); 3145 if (err) { 3146 dev_err(dev, "Failed to enable PCI device\n"); 3147 return err; 3148 } 3149 3150 err = pcim_request_all_regions(pdev, DRV_NAME); 3151 if (err) { 3152 dev_err(dev, "PCI request regions failed 0x%x\n", err); 3153 return err; 3154 } 3155 3156 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); 3157 if (err) { 3158 dev_err(dev, "DMA mask config failed, abort\n"); 3159 return err; 3160 } 3161 3162 pci_set_master(pdev); 3163 3164 /* Set number of queues */ 3165 qcount = min_t(int, num_online_cpus(), OTX2_MAX_CQ_CNT); 3166 qos_txqs = min_t(int, qcount, OTX2_QOS_MAX_LEAF_NODES); 3167 3168 netdev = alloc_etherdev_mqs(sizeof(*pf), qcount + qos_txqs, qcount); 3169 if (!netdev) 3170 return -ENOMEM; 3171 3172 pci_set_drvdata(pdev, netdev); 3173 SET_NETDEV_DEV(netdev, &pdev->dev); 3174 pf = netdev_priv(netdev); 3175 pf->netdev = netdev; 3176 pf->pdev = pdev; 3177 pf->dev = dev; 3178 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 3179 pf->flags |= OTX2_FLAG_INTF_DOWN; 3180 3181 hw = &pf->hw; 3182 hw->pdev = pdev; 3183 hw->rx_queues = qcount; 3184 hw->tx_queues = qcount; 3185 hw->non_qos_queues = qcount; 3186 hw->max_queues = qcount; 3187 hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN; 3188 /* Use CQE of 128 byte descriptor size by default */ 3189 hw->xqe_size = 128; 3190 3191 err = otx2_init_rsrc(pdev, pf); 3192 if (err) 3193 goto err_free_netdev; 3194 3195 err = otx2_set_real_num_queues(netdev, hw->tx_queues, hw->rx_queues); 3196 if (err) 3197 goto err_detach_rsrc; 3198 3199 /* Assign default mac address */ 3200 otx2_get_mac_from_af(netdev); 3201 3202 /* Don't check for error. Proceed without ptp */ 3203 otx2_ptp_init(pf); 3204 3205 /* NPA's pool is a stack to which SW frees buffer pointers via Aura. 3206 * HW allocates buffer pointer from stack and uses it for DMA'ing 3207 * ingress packet. In some scenarios HW can free back allocated buffer 3208 * pointers to pool. This makes it impossible for SW to maintain a 3209 * parallel list where physical addresses of buffer pointers (IOVAs) 3210 * given to HW can be saved for later reference. 3211 * 3212 * So the only way to convert Rx packet's buffer address is to use 3213 * IOMMU's iova_to_phys() handler which translates the address by 3214 * walking through the translation tables. 3215 */ 3216 pf->iommu_domain = iommu_get_domain_for_dev(dev); 3217 3218 netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 3219 NETIF_F_IPV6_CSUM | NETIF_F_RXHASH | 3220 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | 3221 NETIF_F_GSO_UDP_L4); 3222 netdev->features |= netdev->hw_features; 3223 3224 err = otx2_mcam_flow_init(pf); 3225 if (err) 3226 goto err_ptp_destroy; 3227 3228 otx2_set_hw_capabilities(pf); 3229 3230 err = cn10k_mcs_init(pf); 3231 if (err) 3232 goto err_del_mcam_entries; 3233 3234 if (pf->flags & OTX2_FLAG_NTUPLE_SUPPORT) 3235 netdev->hw_features |= NETIF_F_NTUPLE; 3236 3237 if (pf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT) 3238 netdev->priv_flags |= IFF_UNICAST_FLT; 3239 3240 /* Support TSO on tag interface */ 3241 netdev->vlan_features |= netdev->features; 3242 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | 3243 NETIF_F_HW_VLAN_STAG_TX; 3244 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 3245 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX | 3246 NETIF_F_HW_VLAN_STAG_RX; 3247 netdev->features |= netdev->hw_features; 3248 3249 /* HW supports tc offload but mutually exclusive with n-tuple filters */ 3250 if (pf->flags & OTX2_FLAG_TC_FLOWER_SUPPORT) 3251 netdev->hw_features |= NETIF_F_HW_TC; 3252 3253 netdev->hw_features |= NETIF_F_LOOPBACK | NETIF_F_RXALL; 3254 3255 netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS); 3256 netdev->watchdog_timeo = OTX2_TX_TIMEOUT; 3257 3258 netdev->netdev_ops = &otx2_netdev_ops; 3259 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT; 3260 3261 netdev->min_mtu = OTX2_MIN_MTU; 3262 netdev->max_mtu = otx2_get_max_mtu(pf); 3263 hw->max_mtu = netdev->max_mtu; 3264 3265 /* reset CGX/RPM MAC stats */ 3266 otx2_reset_mac_stats(pf); 3267 3268 err = cn10k_ipsec_init(netdev); 3269 if (err) 3270 goto err_mcs_free; 3271 3272 err = register_netdev(netdev); 3273 if (err) { 3274 dev_err(dev, "Failed to register netdevice\n"); 3275 goto err_ipsec_clean; 3276 } 3277 3278 err = otx2_wq_init(pf); 3279 if (err) 3280 goto err_unreg_netdev; 3281 3282 otx2_set_ethtool_ops(netdev); 3283 3284 err = otx2_init_tc(pf); 3285 if (err) 3286 goto err_mcam_flow_del; 3287 3288 err = otx2_register_dl(pf); 3289 if (err) 3290 goto err_mcam_flow_del; 3291 3292 /* Initialize SR-IOV resources */ 3293 err = otx2_sriov_vfcfg_init(pf); 3294 if (err) 3295 goto err_pf_sriov_init; 3296 3297 /* Enable link notifications */ 3298 otx2_cgx_config_linkevents(pf, true); 3299 3300 pf->af_xdp_zc_qidx = bitmap_zalloc(qcount, GFP_KERNEL); 3301 if (!pf->af_xdp_zc_qidx) { 3302 err = -ENOMEM; 3303 goto err_sriov_cleannup; 3304 } 3305 3306 #ifdef CONFIG_DCB 3307 err = otx2_dcbnl_set_ops(netdev); 3308 if (err) 3309 goto err_free_zc_bmap; 3310 #endif 3311 3312 otx2_qos_init(pf, qos_txqs); 3313 3314 return 0; 3315 3316 #ifdef CONFIG_DCB 3317 err_free_zc_bmap: 3318 bitmap_free(pf->af_xdp_zc_qidx); 3319 #endif 3320 err_sriov_cleannup: 3321 otx2_sriov_vfcfg_cleanup(pf); 3322 err_pf_sriov_init: 3323 otx2_shutdown_tc(pf); 3324 err_mcam_flow_del: 3325 otx2_mcam_flow_del(pf); 3326 err_unreg_netdev: 3327 unregister_netdev(netdev); 3328 err_ipsec_clean: 3329 cn10k_ipsec_clean(pf); 3330 err_mcs_free: 3331 cn10k_mcs_free(pf); 3332 err_del_mcam_entries: 3333 otx2_mcam_flow_del(pf); 3334 err_ptp_destroy: 3335 otx2_ptp_destroy(pf); 3336 err_detach_rsrc: 3337 if (pf->hw.lmt_info) 3338 free_percpu(pf->hw.lmt_info); 3339 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3340 qmem_free(pf->dev, pf->dync_lmt); 3341 otx2_detach_resources(&pf->mbox); 3342 otx2_disable_mbox_intr(pf); 3343 otx2_pfaf_mbox_destroy(pf); 3344 pci_free_irq_vectors(hw->pdev); 3345 err_free_netdev: 3346 pci_set_drvdata(pdev, NULL); 3347 free_netdev(netdev); 3348 return err; 3349 } 3350 3351 static void otx2_vf_link_event_task(struct work_struct *work) 3352 { 3353 struct otx2_vf_config *config; 3354 struct cgx_link_info_msg *req; 3355 struct mbox_msghdr *msghdr; 3356 struct delayed_work *dwork; 3357 struct otx2_nic *pf; 3358 int vf_idx; 3359 3360 config = container_of(work, struct otx2_vf_config, 3361 link_event_work.work); 3362 vf_idx = config - config->pf->vf_configs; 3363 pf = config->pf; 3364 3365 if (config->intf_down) 3366 return; 3367 3368 mutex_lock(&pf->mbox.lock); 3369 3370 dwork = &config->link_event_work; 3371 3372 if (!otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx)) { 3373 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 3374 mutex_unlock(&pf->mbox.lock); 3375 return; 3376 } 3377 3378 msghdr = otx2_mbox_alloc_msg_rsp(&pf->mbox_pfvf[0].mbox_up, vf_idx, 3379 sizeof(*req), sizeof(struct msg_rsp)); 3380 if (!msghdr) { 3381 dev_err(pf->dev, "Failed to create VF%d link event\n", vf_idx); 3382 mutex_unlock(&pf->mbox.lock); 3383 return; 3384 } 3385 3386 req = (struct cgx_link_info_msg *)msghdr; 3387 req->hdr.id = MBOX_MSG_CGX_LINK_EVENT; 3388 req->hdr.sig = OTX2_MBOX_REQ_SIG; 3389 req->hdr.pcifunc = pf->pcifunc; 3390 memcpy(&req->link_info, &pf->linfo, sizeof(req->link_info)); 3391 3392 otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx); 3393 3394 otx2_sync_mbox_up_msg(&pf->mbox_pfvf[0], vf_idx); 3395 3396 mutex_unlock(&pf->mbox.lock); 3397 } 3398 3399 static int otx2_sriov_enable(struct pci_dev *pdev, int numvfs) 3400 { 3401 struct net_device *netdev = pci_get_drvdata(pdev); 3402 struct otx2_nic *pf = netdev_priv(netdev); 3403 int ret; 3404 3405 /* Init PF <=> VF mailbox stuff */ 3406 ret = otx2_pfvf_mbox_init(pf, numvfs); 3407 if (ret) 3408 return ret; 3409 3410 ret = otx2_register_pfvf_mbox_intr(pf, numvfs); 3411 if (ret) 3412 goto free_mbox; 3413 3414 ret = otx2_pf_flr_init(pf, numvfs); 3415 if (ret) 3416 goto free_intr; 3417 3418 ret = otx2_register_flr_me_intr(pf, numvfs); 3419 if (ret) 3420 goto free_flr; 3421 3422 ret = pci_enable_sriov(pdev, numvfs); 3423 if (ret) 3424 goto free_flr_intr; 3425 3426 return numvfs; 3427 free_flr_intr: 3428 otx2_disable_flr_me_intr(pf); 3429 free_flr: 3430 otx2_flr_wq_destroy(pf); 3431 free_intr: 3432 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3433 free_mbox: 3434 otx2_pfvf_mbox_destroy(pf); 3435 return ret; 3436 } 3437 3438 static int otx2_sriov_disable(struct pci_dev *pdev) 3439 { 3440 struct net_device *netdev = pci_get_drvdata(pdev); 3441 struct otx2_nic *pf = netdev_priv(netdev); 3442 int numvfs = pci_num_vf(pdev); 3443 3444 if (!numvfs) 3445 return 0; 3446 3447 pci_disable_sriov(pdev); 3448 3449 otx2_disable_flr_me_intr(pf); 3450 otx2_flr_wq_destroy(pf); 3451 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3452 otx2_pfvf_mbox_destroy(pf); 3453 3454 return 0; 3455 } 3456 3457 static int otx2_sriov_configure(struct pci_dev *pdev, int numvfs) 3458 { 3459 if (numvfs == 0) 3460 return otx2_sriov_disable(pdev); 3461 else 3462 return otx2_sriov_enable(pdev, numvfs); 3463 } 3464 3465 static void otx2_ndc_sync(struct otx2_nic *pf) 3466 { 3467 struct mbox *mbox = &pf->mbox; 3468 struct ndc_sync_op *req; 3469 3470 mutex_lock(&mbox->lock); 3471 3472 req = otx2_mbox_alloc_msg_ndc_sync_op(mbox); 3473 if (!req) { 3474 mutex_unlock(&mbox->lock); 3475 return; 3476 } 3477 3478 req->nix_lf_tx_sync = 1; 3479 req->nix_lf_rx_sync = 1; 3480 req->npa_lf_sync = 1; 3481 3482 if (!otx2_sync_mbox_msg(mbox)) 3483 dev_err(pf->dev, "NDC sync operation failed\n"); 3484 3485 mutex_unlock(&mbox->lock); 3486 } 3487 3488 static void otx2_remove(struct pci_dev *pdev) 3489 { 3490 struct net_device *netdev = pci_get_drvdata(pdev); 3491 struct otx2_nic *pf; 3492 3493 if (!netdev) 3494 return; 3495 3496 pf = netdev_priv(netdev); 3497 3498 pf->flags |= OTX2_FLAG_PF_SHUTDOWN; 3499 3500 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) 3501 otx2_config_hw_tx_tstamp(pf, false); 3502 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) 3503 otx2_config_hw_rx_tstamp(pf, false); 3504 3505 /* Disable 802.3x pause frames */ 3506 if (pf->flags & OTX2_FLAG_RX_PAUSE_ENABLED || 3507 (pf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) { 3508 pf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED; 3509 pf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED; 3510 otx2_config_pause_frm(pf); 3511 } 3512 3513 #ifdef CONFIG_DCB 3514 /* Disable PFC config */ 3515 if (pf->pfc_en) { 3516 pf->pfc_en = 0; 3517 otx2_config_priority_flow_ctrl(pf); 3518 } 3519 #endif 3520 cancel_work_sync(&pf->reset_task); 3521 /* Disable link notifications */ 3522 otx2_cgx_config_linkevents(pf, false); 3523 3524 otx2_unregister_dl(pf); 3525 unregister_netdev(netdev); 3526 cn10k_ipsec_clean(pf); 3527 cn10k_mcs_free(pf); 3528 otx2_sriov_disable(pf->pdev); 3529 otx2_sriov_vfcfg_cleanup(pf); 3530 if (pf->otx2_wq) 3531 destroy_workqueue(pf->otx2_wq); 3532 3533 otx2_ptp_destroy(pf); 3534 otx2_mcam_flow_del(pf); 3535 otx2_shutdown_tc(pf); 3536 otx2_shutdown_qos(pf); 3537 otx2_ndc_sync(pf); 3538 otx2_detach_resources(&pf->mbox); 3539 if (pf->hw.lmt_info) 3540 free_percpu(pf->hw.lmt_info); 3541 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3542 qmem_free(pf->dev, pf->dync_lmt); 3543 otx2_disable_mbox_intr(pf); 3544 otx2_pfaf_mbox_destroy(pf); 3545 pci_free_irq_vectors(pf->pdev); 3546 pci_set_drvdata(pdev, NULL); 3547 free_netdev(netdev); 3548 } 3549 3550 static struct pci_driver otx2_pf_driver = { 3551 .name = DRV_NAME, 3552 .id_table = otx2_pf_id_table, 3553 .probe = otx2_probe, 3554 .shutdown = otx2_remove, 3555 .remove = otx2_remove, 3556 .sriov_configure = otx2_sriov_configure 3557 }; 3558 3559 static int __init otx2_rvupf_init_module(void) 3560 { 3561 pr_info("%s: %s\n", DRV_NAME, DRV_STRING); 3562 3563 return pci_register_driver(&otx2_pf_driver); 3564 } 3565 3566 static void __exit otx2_rvupf_cleanup_module(void) 3567 { 3568 pci_unregister_driver(&otx2_pf_driver); 3569 } 3570 3571 module_init(otx2_rvupf_init_module); 3572 module_exit(otx2_rvupf_cleanup_module); 3573