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 mbox_data = otx2_read64(pf, RVU_PF_PFAF_MBOX0); 1057 1058 if (mbox_data & MBOX_UP_MSG) { 1059 mbox_data &= ~MBOX_UP_MSG; 1060 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 1061 1062 mbox = &mw->mbox_up; 1063 mdev = &mbox->dev[0]; 1064 otx2_sync_mbox_bbuf(mbox, 0); 1065 1066 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1067 if (hdr->num_msgs) 1068 queue_work(pf->mbox_wq, &mw->mbox_up_wrk); 1069 1070 trace_otx2_msg_interrupt(pf->pdev, "UP message from AF to PF", 1071 BIT_ULL(0)); 1072 1073 trace_otx2_msg_status(pf->pdev, "PF-AF up work queued(interrupt)", 1074 hdr->num_msgs); 1075 } 1076 1077 if (mbox_data & MBOX_DOWN_MSG) { 1078 mbox_data &= ~MBOX_DOWN_MSG; 1079 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 1080 1081 mbox = &mw->mbox; 1082 mdev = &mbox->dev[0]; 1083 otx2_sync_mbox_bbuf(mbox, 0); 1084 1085 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1086 if (hdr->num_msgs) 1087 queue_work(pf->mbox_wq, &mw->mbox_wrk); 1088 1089 trace_otx2_msg_interrupt(pf->pdev, "DOWN reply from AF to PF", 1090 BIT_ULL(0)); 1091 1092 trace_otx2_msg_status(pf->pdev, "PF-AF down work queued(interrupt)", 1093 hdr->num_msgs); 1094 } 1095 1096 return IRQ_HANDLED; 1097 } 1098 1099 void otx2_disable_mbox_intr(struct otx2_nic *pf) 1100 { 1101 int vector; 1102 1103 /* Disable AF => PF mailbox IRQ */ 1104 if (!is_cn20k(pf->pdev)) { 1105 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX); 1106 otx2_write64(pf, RVU_PF_INT_ENA_W1C, BIT_ULL(0)); 1107 } else { 1108 vector = pci_irq_vector(pf->pdev, 1109 RVU_MBOX_PF_INT_VEC_AFPF_MBOX); 1110 otx2_write64(pf, RVU_PF_INT_ENA_W1C, 1111 BIT_ULL(0) | BIT_ULL(1)); 1112 } 1113 free_irq(vector, pf); 1114 } 1115 EXPORT_SYMBOL(otx2_disable_mbox_intr); 1116 1117 int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af) 1118 { 1119 struct otx2_hw *hw = &pf->hw; 1120 struct msg_req *req; 1121 u64 mbox_int_mask; 1122 char *irq_name; 1123 int err; 1124 1125 mbox_int_mask = !is_cn20k(pf->pdev) ? BIT_ULL(0) : 1126 BIT_ULL(0) | BIT_ULL(1); 1127 1128 /* Clear stale mailbox interrupt state before installing the handler. */ 1129 otx2_write64(pf, RVU_PF_INT, mbox_int_mask); 1130 1131 /* Register mailbox interrupt handler */ 1132 if (!is_cn20k(pf->pdev)) { 1133 irq_name = &hw->irq_name[RVU_PF_INT_VEC_AFPF_MBOX * NAME_SIZE]; 1134 snprintf(irq_name, NAME_SIZE, "RVUPF%d AFPF Mbox", 1135 rvu_get_pf(pf->pdev, pf->pcifunc)); 1136 err = request_irq(pci_irq_vector 1137 (pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX), 1138 pf->hw_ops->pfaf_mbox_intr_handler, 1139 0, irq_name, pf); 1140 } else { 1141 irq_name = &hw->irq_name[RVU_MBOX_PF_INT_VEC_AFPF_MBOX * 1142 NAME_SIZE]; 1143 snprintf(irq_name, NAME_SIZE, "RVUPF%d AFPF Mbox", 1144 rvu_get_pf(pf->pdev, pf->pcifunc)); 1145 err = request_irq(pci_irq_vector 1146 (pf->pdev, RVU_MBOX_PF_INT_VEC_AFPF_MBOX), 1147 pf->hw_ops->pfaf_mbox_intr_handler, 1148 0, irq_name, pf); 1149 } 1150 if (err) { 1151 dev_err(pf->dev, 1152 "RVUPF: IRQ registration failed for PFAF mbox irq\n"); 1153 return err; 1154 } 1155 1156 /* Enable mailbox interrupt for msgs coming from AF. */ 1157 otx2_write64(pf, RVU_PF_INT_ENA_W1S, mbox_int_mask); 1158 1159 if (!probe_af) 1160 return 0; 1161 1162 /* Check mailbox communication with AF */ 1163 req = otx2_mbox_alloc_msg_ready(&pf->mbox); 1164 if (!req) { 1165 otx2_disable_mbox_intr(pf); 1166 return -ENOMEM; 1167 } 1168 err = otx2_sync_mbox_msg(&pf->mbox); 1169 if (err) { 1170 dev_warn(pf->dev, 1171 "AF not responding to mailbox, deferring probe\n"); 1172 otx2_disable_mbox_intr(pf); 1173 return -EPROBE_DEFER; 1174 } 1175 1176 return 0; 1177 } 1178 1179 void otx2_pfaf_mbox_destroy(struct otx2_nic *pf) 1180 { 1181 struct mbox *mbox = &pf->mbox; 1182 1183 if (pf->mbox_wq) { 1184 destroy_workqueue(pf->mbox_wq); 1185 pf->mbox_wq = NULL; 1186 } 1187 1188 if (mbox->mbox.hwbase && !is_cn20k(pf->pdev)) 1189 iounmap((void __iomem *)mbox->mbox.hwbase); 1190 1191 otx2_mbox_destroy(&mbox->mbox); 1192 otx2_mbox_destroy(&mbox->mbox_up); 1193 } 1194 EXPORT_SYMBOL(otx2_pfaf_mbox_destroy); 1195 1196 int otx2_pfaf_mbox_init(struct otx2_nic *pf) 1197 { 1198 struct mbox *mbox = &pf->mbox; 1199 void __iomem *hwbase; 1200 int err; 1201 1202 mbox->pfvf = pf; 1203 pf->mbox_wq = alloc_ordered_workqueue("otx2_pfaf_mailbox", 1204 WQ_HIGHPRI | WQ_MEM_RECLAIM); 1205 if (!pf->mbox_wq) 1206 return -ENOMEM; 1207 1208 /* For CN20K, AF allocates mbox memory in DRAM and writes PF 1209 * regions/offsets in RVU_MBOX_AF_PFX_ADDR, the RVU_PFX_FUNC_PFAF_MBOX 1210 * gives the aliased address to access AF/PF mailbox regions. 1211 */ 1212 if (is_cn20k(pf->pdev)) 1213 hwbase = pf->reg_base + RVU_PFX_FUNC_PFAF_MBOX + 1214 ((u64)BLKADDR_MBOX << RVU_FUNC_BLKADDR_SHIFT); 1215 else 1216 /* Mailbox is a reserved memory (in RAM) region shared between 1217 * admin function (i.e AF) and this PF, shouldn't be mapped as 1218 * device memory to allow unaligned accesses. 1219 */ 1220 hwbase = ioremap_wc(pci_resource_start 1221 (pf->pdev, PCI_MBOX_BAR_NUM), MBOX_SIZE); 1222 if (!hwbase) { 1223 dev_err(pf->dev, "Unable to map PFAF mailbox region\n"); 1224 err = -ENOMEM; 1225 goto exit; 1226 } 1227 1228 err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base, 1229 MBOX_DIR_PFAF, 1); 1230 if (err) 1231 goto exit; 1232 1233 err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base, 1234 MBOX_DIR_PFAF_UP, 1); 1235 if (err) 1236 goto exit; 1237 1238 err = otx2_mbox_bbuf_init(mbox, pf->pdev); 1239 if (err) 1240 goto exit; 1241 1242 INIT_WORK(&mbox->mbox_wrk, otx2_pfaf_mbox_handler); 1243 INIT_WORK(&mbox->mbox_up_wrk, otx2_pfaf_mbox_up_handler); 1244 mutex_init(&mbox->lock); 1245 1246 return 0; 1247 exit: 1248 otx2_pfaf_mbox_destroy(pf); 1249 return err; 1250 } 1251 1252 static int otx2_cgx_config_linkevents(struct otx2_nic *pf, bool enable) 1253 { 1254 struct msg_req *msg; 1255 int err; 1256 1257 mutex_lock(&pf->mbox.lock); 1258 if (enable) 1259 msg = otx2_mbox_alloc_msg_cgx_start_linkevents(&pf->mbox); 1260 else 1261 msg = otx2_mbox_alloc_msg_cgx_stop_linkevents(&pf->mbox); 1262 1263 if (!msg) { 1264 mutex_unlock(&pf->mbox.lock); 1265 return -ENOMEM; 1266 } 1267 1268 err = otx2_sync_mbox_msg(&pf->mbox); 1269 mutex_unlock(&pf->mbox.lock); 1270 return err; 1271 } 1272 1273 int otx2_reset_mac_stats(struct otx2_nic *pfvf) 1274 { 1275 struct msg_req *req; 1276 int err; 1277 1278 mutex_lock(&pfvf->mbox.lock); 1279 req = otx2_mbox_alloc_msg_cgx_stats_rst(&pfvf->mbox); 1280 if (!req) { 1281 mutex_unlock(&pfvf->mbox.lock); 1282 return -ENOMEM; 1283 } 1284 1285 err = otx2_sync_mbox_msg(&pfvf->mbox); 1286 mutex_unlock(&pfvf->mbox.lock); 1287 return err; 1288 } 1289 1290 static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable) 1291 { 1292 struct msg_req *msg; 1293 int err; 1294 1295 if (enable && !bitmap_empty(pf->flow_cfg->dmacflt_bmap, 1296 pf->flow_cfg->dmacflt_max_flows)) 1297 netdev_warn(pf->netdev, 1298 "CGX/RPM internal loopback might not work as DMAC filters are active\n"); 1299 1300 mutex_lock(&pf->mbox.lock); 1301 if (enable) 1302 msg = otx2_mbox_alloc_msg_cgx_intlbk_enable(&pf->mbox); 1303 else 1304 msg = otx2_mbox_alloc_msg_cgx_intlbk_disable(&pf->mbox); 1305 1306 if (!msg) { 1307 mutex_unlock(&pf->mbox.lock); 1308 return -ENOMEM; 1309 } 1310 1311 err = otx2_sync_mbox_msg(&pf->mbox); 1312 mutex_unlock(&pf->mbox.lock); 1313 return err; 1314 } 1315 1316 int otx2_set_real_num_queues(struct net_device *netdev, 1317 int tx_queues, int rx_queues) 1318 { 1319 int err; 1320 1321 err = netif_set_real_num_tx_queues(netdev, tx_queues); 1322 if (err) { 1323 netdev_err(netdev, 1324 "Failed to set no of Tx queues: %d\n", tx_queues); 1325 return err; 1326 } 1327 1328 err = netif_set_real_num_rx_queues(netdev, rx_queues); 1329 if (err) 1330 netdev_err(netdev, 1331 "Failed to set no of Rx queues: %d\n", rx_queues); 1332 return err; 1333 } 1334 EXPORT_SYMBOL(otx2_set_real_num_queues); 1335 1336 static char *nix_sqoperr_e_str[NIX_SQOPERR_MAX] = { 1337 "NIX_SQOPERR_OOR", 1338 "NIX_SQOPERR_CTX_FAULT", 1339 "NIX_SQOPERR_CTX_POISON", 1340 "NIX_SQOPERR_DISABLED", 1341 "NIX_SQOPERR_SIZE_ERR", 1342 "NIX_SQOPERR_OFLOW", 1343 "NIX_SQOPERR_SQB_NULL", 1344 "NIX_SQOPERR_SQB_FAULT", 1345 "NIX_SQOPERR_SQE_SZ_ZERO", 1346 }; 1347 1348 static char *nix_mnqerr_e_str[NIX_MNQERR_MAX] = { 1349 "NIX_MNQERR_SQ_CTX_FAULT", 1350 "NIX_MNQERR_SQ_CTX_POISON", 1351 "NIX_MNQERR_SQB_FAULT", 1352 "NIX_MNQERR_SQB_POISON", 1353 "NIX_MNQERR_TOTAL_ERR", 1354 "NIX_MNQERR_LSO_ERR", 1355 "NIX_MNQERR_CQ_QUERY_ERR", 1356 "NIX_MNQERR_MAX_SQE_SIZE_ERR", 1357 "NIX_MNQERR_MAXLEN_ERR", 1358 "NIX_MNQERR_SQE_SIZEM1_ZERO", 1359 }; 1360 1361 static char *nix_snd_status_e_str[NIX_SND_STATUS_MAX] = { 1362 [NIX_SND_STATUS_GOOD] = "NIX_SND_STATUS_GOOD", 1363 [NIX_SND_STATUS_SQ_CTX_FAULT] = "NIX_SND_STATUS_SQ_CTX_FAULT", 1364 [NIX_SND_STATUS_SQ_CTX_POISON] = "NIX_SND_STATUS_SQ_CTX_POISON", 1365 [NIX_SND_STATUS_SQB_FAULT] = "NIX_SND_STATUS_SQB_FAULT", 1366 [NIX_SND_STATUS_SQB_POISON] = "NIX_SND_STATUS_SQB_POISON", 1367 [NIX_SND_STATUS_HDR_ERR] = "NIX_SND_STATUS_HDR_ERR", 1368 [NIX_SND_STATUS_EXT_ERR] = "NIX_SND_STATUS_EXT_ERR", 1369 [NIX_SND_STATUS_JUMP_FAULT] = "NIX_SND_STATUS_JUMP_FAULT", 1370 [NIX_SND_STATUS_JUMP_POISON] = "NIX_SND_STATUS_JUMP_POISON", 1371 [NIX_SND_STATUS_CRC_ERR] = "NIX_SND_STATUS_CRC_ERR", 1372 [NIX_SND_STATUS_IMM_ERR] = "NIX_SND_STATUS_IMM_ERR", 1373 [NIX_SND_STATUS_SG_ERR] = "NIX_SND_STATUS_SG_ERR", 1374 [NIX_SND_STATUS_MEM_ERR] = "NIX_SND_STATUS_MEM_ERR", 1375 [NIX_SND_STATUS_INVALID_SUBDC] = "NIX_SND_STATUS_INVALID_SUBDC", 1376 [NIX_SND_STATUS_SUBDC_ORDER_ERR] = "NIX_SND_STATUS_SUBDC_ORDER_ERR", 1377 [NIX_SND_STATUS_DATA_FAULT] = "NIX_SND_STATUS_DATA_FAULT", 1378 [NIX_SND_STATUS_DATA_POISON] = "NIX_SND_STATUS_DATA_POISON", 1379 [NIX_SND_STATUS_NPC_DROP_ACTION] = "NIX_SND_STATUS_NPC_DROP_ACTION", 1380 [NIX_SND_STATUS_LOCK_VIOL] = "NIX_SND_STATUS_LOCK_VIOL", 1381 [NIX_SND_STATUS_NPC_UCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_UCAST_CHAN_ERR", 1382 [NIX_SND_STATUS_NPC_MCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_MCAST_CHAN_ERR", 1383 [NIX_SND_STATUS_NPC_MCAST_ABORT] = "NIX_SND_STATUS_NPC_MCAST_ABORT", 1384 [NIX_SND_STATUS_NPC_VTAG_PTR_ERR] = "NIX_SND_STATUS_NPC_VTAG_PTR_ERR", 1385 [NIX_SND_STATUS_NPC_VTAG_SIZE_ERR] = "NIX_SND_STATUS_NPC_VTAG_SIZE_ERR", 1386 [NIX_SND_STATUS_SEND_MEM_FAULT] = "NIX_SND_STATUS_SEND_MEM_FAULT", 1387 [NIX_SND_STATUS_SEND_STATS_ERR] = "NIX_SND_STATUS_SEND_STATS_ERR", 1388 }; 1389 1390 static irqreturn_t otx2_q_intr_handler(int irq, void *data) 1391 { 1392 struct otx2_nic *pf = data; 1393 struct otx2_snd_queue *sq; 1394 void __iomem *ptr; 1395 u64 val, qidx = 0; 1396 1397 /* CQ */ 1398 for (qidx = 0; qidx < pf->qset.cq_cnt; qidx++) { 1399 ptr = otx2_get_regaddr(pf, NIX_LF_CQ_OP_INT); 1400 val = otx2_atomic64_add((qidx << 44), ptr); 1401 1402 otx2_write64(pf, NIX_LF_CQ_OP_INT, (qidx << 44) | 1403 (val & NIX_CQERRINT_BITS)); 1404 if (!(val & (NIX_CQERRINT_BITS | BIT_ULL(42)))) 1405 continue; 1406 1407 if (val & BIT_ULL(42)) { 1408 netdev_err(pf->netdev, 1409 "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1410 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1411 } else { 1412 if (val & BIT_ULL(NIX_CQERRINT_DOOR_ERR)) 1413 netdev_err(pf->netdev, "CQ%lld: Doorbell error", 1414 qidx); 1415 if (val & BIT_ULL(NIX_CQERRINT_CQE_FAULT)) 1416 netdev_err(pf->netdev, 1417 "CQ%lld: Memory fault on CQE write to LLC/DRAM", 1418 qidx); 1419 } 1420 1421 schedule_work(&pf->reset_task); 1422 } 1423 1424 /* SQ */ 1425 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1426 u64 sq_op_err_dbg, mnq_err_dbg, snd_err_dbg; 1427 u8 sq_op_err_code, mnq_err_code, snd_err_code; 1428 1429 sq = &pf->qset.sq[qidx]; 1430 if (!sq->sqb_ptrs) 1431 continue; 1432 1433 /* Below debug registers captures first errors corresponding to 1434 * those registers. We don't have to check against SQ qid as 1435 * these are fatal errors. 1436 */ 1437 1438 ptr = otx2_get_regaddr(pf, NIX_LF_SQ_OP_INT); 1439 val = otx2_atomic64_add((qidx << 44), ptr); 1440 otx2_write64(pf, NIX_LF_SQ_OP_INT, (qidx << 44) | 1441 (val & NIX_SQINT_BITS)); 1442 1443 if (val & BIT_ULL(42)) { 1444 netdev_err(pf->netdev, 1445 "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1446 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1447 goto done; 1448 } 1449 1450 sq_op_err_dbg = otx2_read64(pf, NIX_LF_SQ_OP_ERR_DBG); 1451 if (!(sq_op_err_dbg & BIT(44))) 1452 goto chk_mnq_err_dbg; 1453 1454 sq_op_err_code = FIELD_GET(GENMASK(7, 0), sq_op_err_dbg); 1455 netdev_err(pf->netdev, 1456 "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(0x%llx) err=%s(%#x)\n", 1457 qidx, sq_op_err_dbg, 1458 nix_sqoperr_e_str[sq_op_err_code], 1459 sq_op_err_code); 1460 1461 otx2_write64(pf, NIX_LF_SQ_OP_ERR_DBG, BIT_ULL(44)); 1462 1463 if (sq_op_err_code == NIX_SQOPERR_SQB_NULL) 1464 goto chk_mnq_err_dbg; 1465 1466 /* Err is not NIX_SQOPERR_SQB_NULL, call aq function to read SQ structure. 1467 * TODO: But we are in irq context. How to call mbox functions which does sleep 1468 */ 1469 1470 chk_mnq_err_dbg: 1471 mnq_err_dbg = otx2_read64(pf, NIX_LF_MNQ_ERR_DBG); 1472 if (!(mnq_err_dbg & BIT(44))) 1473 goto chk_snd_err_dbg; 1474 1475 mnq_err_code = FIELD_GET(GENMASK(7, 0), mnq_err_dbg); 1476 netdev_err(pf->netdev, 1477 "SQ%lld: NIX_LF_MNQ_ERR_DBG(0x%llx) err=%s(%#x)\n", 1478 qidx, mnq_err_dbg, nix_mnqerr_e_str[mnq_err_code], 1479 mnq_err_code); 1480 otx2_write64(pf, NIX_LF_MNQ_ERR_DBG, BIT_ULL(44)); 1481 1482 chk_snd_err_dbg: 1483 snd_err_dbg = otx2_read64(pf, NIX_LF_SEND_ERR_DBG); 1484 if (snd_err_dbg & BIT(44)) { 1485 snd_err_code = FIELD_GET(GENMASK(7, 0), snd_err_dbg); 1486 netdev_err(pf->netdev, 1487 "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s(%#x)\n", 1488 qidx, snd_err_dbg, 1489 nix_snd_status_e_str[snd_err_code], 1490 snd_err_code); 1491 otx2_write64(pf, NIX_LF_SEND_ERR_DBG, BIT_ULL(44)); 1492 } 1493 1494 done: 1495 /* Print values and reset */ 1496 if (val & BIT_ULL(NIX_SQINT_SQB_ALLOC_FAIL)) 1497 netdev_err(pf->netdev, "SQ%lld: SQB allocation failed", 1498 qidx); 1499 1500 schedule_work(&pf->reset_task); 1501 } 1502 1503 return IRQ_HANDLED; 1504 } 1505 1506 irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq) 1507 { 1508 struct otx2_cq_poll *cq_poll = (struct otx2_cq_poll *)cq_irq; 1509 struct otx2_nic *pf = (struct otx2_nic *)cq_poll->dev; 1510 int qidx = cq_poll->cint_idx; 1511 1512 /* Disable interrupts. 1513 * 1514 * Completion interrupts behave in a level-triggered interrupt 1515 * fashion, and hence have to be cleared only after it is serviced. 1516 */ 1517 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 1518 1519 /* Schedule NAPI */ 1520 pf->napi_events++; 1521 napi_schedule_irqoff(&cq_poll->napi); 1522 1523 return IRQ_HANDLED; 1524 } 1525 EXPORT_SYMBOL(otx2_cq_intr_handler); 1526 1527 void otx2_disable_napi(struct otx2_nic *pf) 1528 { 1529 struct otx2_qset *qset = &pf->qset; 1530 struct otx2_cq_poll *cq_poll; 1531 struct work_struct *work; 1532 int qidx; 1533 1534 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1535 cq_poll = &qset->napi[qidx]; 1536 work = &cq_poll->dim.work; 1537 if (work->func) 1538 cancel_work_sync(work); 1539 napi_disable(&cq_poll->napi); 1540 netif_napi_del(&cq_poll->napi); 1541 } 1542 } 1543 EXPORT_SYMBOL(otx2_disable_napi); 1544 1545 static void otx2_free_cq_res(struct otx2_nic *pf) 1546 { 1547 struct otx2_qset *qset = &pf->qset; 1548 struct otx2_cq_queue *cq; 1549 int qidx; 1550 1551 /* Disable CQs */ 1552 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_CQ, false); 1553 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1554 cq = &qset->cq[qidx]; 1555 qmem_free(pf->dev, cq->cqe); 1556 } 1557 } 1558 1559 static void otx2_free_sq_res(struct otx2_nic *pf) 1560 { 1561 struct otx2_qset *qset = &pf->qset; 1562 struct otx2_snd_queue *sq; 1563 int qidx; 1564 1565 /* Disable SQs */ 1566 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_SQ, false); 1567 /* Free SQB pointers */ 1568 otx2_sq_free_sqbs(pf); 1569 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1570 sq = &qset->sq[qidx]; 1571 /* Skip freeing Qos queues if they are not initialized */ 1572 if (!sq->sqe) 1573 continue; 1574 qmem_free(pf->dev, sq->sqe); 1575 qmem_free(pf->dev, sq->sqe_ring); 1576 qmem_free(pf->dev, sq->cpt_resp); 1577 qmem_free(pf->dev, sq->tso_hdrs); 1578 qmem_free(pf->dev, sq->timestamps); 1579 kfree(sq->sg); 1580 kfree(sq->sqb_ptrs); 1581 } 1582 } 1583 1584 static int otx2_get_rbuf_size(struct otx2_nic *pf, int mtu) 1585 { 1586 int frame_size; 1587 int total_size; 1588 int rbuf_size; 1589 1590 if (pf->hw.rbuf_len) 1591 return ALIGN(pf->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM; 1592 1593 /* The data transferred by NIX to memory consists of actual packet 1594 * plus additional data which has timestamp and/or EDSA/HIGIG2 1595 * headers if interface is configured in corresponding modes. 1596 * NIX transfers entire data using 6 segments/buffers and writes 1597 * a CQE_RX descriptor with those segment addresses. First segment 1598 * has additional data prepended to packet. Also software omits a 1599 * headroom of 128 bytes in each segment. Hence the total size of 1600 * memory needed to receive a packet with 'mtu' is: 1601 * frame size = mtu + additional data; 1602 * memory = frame_size + headroom * 6; 1603 * each receive buffer size = memory / 6; 1604 */ 1605 frame_size = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; 1606 total_size = frame_size + OTX2_HEAD_ROOM * 6; 1607 rbuf_size = total_size / 6; 1608 1609 return ALIGN(rbuf_size, 2048); 1610 } 1611 1612 int otx2_init_hw_resources(struct otx2_nic *pf) 1613 { 1614 struct nix_lf_free_req *free_req; 1615 struct mbox *mbox = &pf->mbox; 1616 struct otx2_hw *hw = &pf->hw; 1617 struct msg_req *req; 1618 int err = 0, lvl; 1619 1620 /* Set required NPA LF's pool counts 1621 * Auras and Pools are used in a 1:1 mapping, 1622 * so, aura count = pool count. 1623 */ 1624 hw->rqpool_cnt = hw->rx_queues; 1625 hw->sqpool_cnt = otx2_get_total_tx_queues(pf); 1626 hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt; 1627 1628 if (!otx2_rep_dev(pf->pdev)) { 1629 /* Maximum hardware supported transmit length */ 1630 pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN; 1631 pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu); 1632 } 1633 1634 mutex_lock(&mbox->lock); 1635 /* NPA init */ 1636 err = otx2_config_npa(pf); 1637 if (err) 1638 goto exit; 1639 1640 /* NIX init */ 1641 err = otx2_config_nix(pf); 1642 if (err) 1643 goto err_free_npa_lf; 1644 1645 /* Default disable backpressure on NIX-CPT */ 1646 otx2_nix_cpt_config_bp(pf, false); 1647 1648 /* Enable backpressure for CGX mapped PF/VFs */ 1649 if (!is_otx2_lbkvf(pf->pdev)) 1650 otx2_nix_config_bp(pf, true); 1651 1652 /* Init Auras and pools used by NIX RQ, for free buffer ptrs */ 1653 err = otx2_rq_aura_pool_init(pf); 1654 if (err) { 1655 mutex_unlock(&mbox->lock); 1656 goto err_free_nix_lf; 1657 } 1658 /* Init Auras and pools used by NIX SQ, for queueing SQEs */ 1659 err = otx2_sq_aura_pool_init(pf); 1660 if (err) { 1661 mutex_unlock(&mbox->lock); 1662 goto err_free_rq_ptrs; 1663 } 1664 1665 err = otx2_txsch_alloc(pf); 1666 if (err) { 1667 mutex_unlock(&mbox->lock); 1668 goto err_free_sq_ptrs; 1669 } 1670 1671 #ifdef CONFIG_DCB 1672 if (pf->pfc_en) { 1673 err = otx2_pfc_txschq_alloc(pf); 1674 if (err) { 1675 mutex_unlock(&mbox->lock); 1676 goto err_free_sq_ptrs; 1677 } 1678 } 1679 #endif 1680 1681 err = otx2_config_nix_queues(pf); 1682 if (err) { 1683 mutex_unlock(&mbox->lock); 1684 goto err_free_txsch; 1685 } 1686 1687 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) { 1688 int idx; 1689 1690 for (idx = 0; idx < pf->hw.txschq_cnt[lvl]; idx++) { 1691 err = otx2_txschq_config(pf, lvl, idx, false); 1692 if (err) { 1693 dev_err(pf->dev, "Failed to config TXSCH\n"); 1694 mutex_unlock(&mbox->lock); 1695 goto err_free_nix_queues; 1696 } 1697 } 1698 } 1699 1700 #ifdef CONFIG_DCB 1701 if (pf->pfc_en) { 1702 err = otx2_pfc_txschq_config(pf); 1703 if (err) { 1704 mutex_unlock(&mbox->lock); 1705 goto err_free_nix_queues; 1706 } 1707 } 1708 #endif 1709 1710 mutex_unlock(&mbox->lock); 1711 return err; 1712 1713 err_free_nix_queues: 1714 otx2_free_sq_res(pf); 1715 otx2_free_cq_res(pf); 1716 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1717 err_free_txsch: 1718 otx2_txschq_stop(pf); 1719 err_free_sq_ptrs: 1720 otx2_sq_free_sqbs(pf); 1721 err_free_rq_ptrs: 1722 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1723 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1724 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1725 otx2_aura_pool_free(pf); 1726 err_free_nix_lf: 1727 mutex_lock(&mbox->lock); 1728 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1729 if (free_req) { 1730 free_req->flags = NIX_LF_DISABLE_FLOWS | NIX_LF_DONT_FREE_DFT_IDXS; 1731 if (otx2_sync_mbox_msg(mbox)) 1732 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1733 } 1734 err_free_npa_lf: 1735 /* Reset NPA LF */ 1736 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1737 if (req) { 1738 if (otx2_sync_mbox_msg(mbox)) 1739 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1740 } 1741 exit: 1742 mutex_unlock(&mbox->lock); 1743 return err; 1744 } 1745 EXPORT_SYMBOL(otx2_init_hw_resources); 1746 1747 void otx2_free_hw_resources(struct otx2_nic *pf) 1748 { 1749 struct otx2_qset *qset = &pf->qset; 1750 struct nix_lf_free_req *free_req; 1751 struct mbox *mbox = &pf->mbox; 1752 struct otx2_cq_queue *cq; 1753 struct msg_req *req; 1754 int qidx; 1755 1756 /* Ensure all SQE are processed */ 1757 otx2_sqb_flush(pf); 1758 1759 /* Stop transmission */ 1760 otx2_txschq_stop(pf); 1761 1762 #ifdef CONFIG_DCB 1763 if (pf->pfc_en) 1764 otx2_pfc_txschq_stop(pf); 1765 #endif 1766 1767 if (!otx2_rep_dev(pf->pdev)) 1768 otx2_clean_qos_queues(pf); 1769 1770 mutex_lock(&mbox->lock); 1771 /* Disable backpressure */ 1772 if (!is_otx2_lbkvf(pf->pdev)) 1773 otx2_nix_config_bp(pf, false); 1774 mutex_unlock(&mbox->lock); 1775 1776 /* Disable RQs */ 1777 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1778 1779 /*Dequeue all CQEs */ 1780 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1781 cq = &qset->cq[qidx]; 1782 if (cq->cq_type == CQ_RX) 1783 otx2_cleanup_rx_cqes(pf, cq, qidx); 1784 else 1785 otx2_cleanup_tx_cqes(pf, cq); 1786 } 1787 otx2_free_pending_sqe(pf); 1788 1789 otx2_free_sq_res(pf); 1790 1791 /* Free RQ buffer pointers*/ 1792 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1793 1794 otx2_free_cq_res(pf); 1795 1796 /* Free all ingress bandwidth profiles allocated */ 1797 if (!otx2_rep_dev(pf->pdev)) 1798 cn10k_free_all_ipolicers(pf); 1799 1800 mutex_lock(&mbox->lock); 1801 /* Reset NIX LF */ 1802 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1803 if (free_req) { 1804 free_req->flags = NIX_LF_DISABLE_FLOWS | NIX_LF_DONT_FREE_DFT_IDXS; 1805 if (!(pf->flags & OTX2_FLAG_PF_SHUTDOWN)) 1806 free_req->flags |= NIX_LF_DONT_FREE_TX_VTAG; 1807 if (otx2_sync_mbox_msg(mbox)) 1808 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1809 } 1810 mutex_unlock(&mbox->lock); 1811 1812 /* Disable NPA Pool and Aura hw context */ 1813 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1814 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1815 otx2_aura_pool_free(pf); 1816 1817 mutex_lock(&mbox->lock); 1818 /* Reset NPA LF */ 1819 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1820 if (req) { 1821 if (otx2_sync_mbox_msg(mbox)) 1822 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1823 } 1824 mutex_unlock(&mbox->lock); 1825 } 1826 EXPORT_SYMBOL(otx2_free_hw_resources); 1827 1828 static bool otx2_promisc_use_mce_list(struct otx2_nic *pfvf) 1829 { 1830 int vf; 1831 1832 /* The AF driver will determine whether to allow the VF netdev or not */ 1833 if (is_otx2_vf(pfvf->pcifunc)) 1834 return true; 1835 1836 /* check if there are any trusted VFs associated with the PF netdev */ 1837 for (vf = 0; vf < pci_num_vf(pfvf->pdev); vf++) 1838 if (pfvf->vf_configs[vf].trusted) 1839 return true; 1840 return false; 1841 } 1842 1843 static void otx2_do_set_rx_mode(struct otx2_nic *pf) 1844 { 1845 struct net_device *netdev = pf->netdev; 1846 struct nix_rx_mode *req; 1847 bool promisc = false; 1848 1849 if (!(netdev->flags & IFF_UP)) 1850 return; 1851 1852 if ((netdev->flags & IFF_PROMISC) || 1853 (netdev_uc_count(netdev) > pf->flow_cfg->ucast_flt_cnt)) { 1854 promisc = true; 1855 } 1856 1857 /* Write unicast address to mcam entries or del from mcam */ 1858 if (!promisc && netdev->priv_flags & IFF_UNICAST_FLT) 1859 __dev_uc_sync(netdev, otx2_add_macfilter, otx2_del_macfilter); 1860 1861 mutex_lock(&pf->mbox.lock); 1862 req = otx2_mbox_alloc_msg_nix_set_rx_mode(&pf->mbox); 1863 if (!req) { 1864 mutex_unlock(&pf->mbox.lock); 1865 return; 1866 } 1867 1868 req->mode = NIX_RX_MODE_UCAST; 1869 1870 if (promisc) 1871 req->mode |= NIX_RX_MODE_PROMISC; 1872 if (netdev->flags & (IFF_ALLMULTI | IFF_MULTICAST)) 1873 req->mode |= NIX_RX_MODE_ALLMULTI; 1874 1875 if (otx2_promisc_use_mce_list(pf)) 1876 req->mode |= NIX_RX_MODE_USE_MCE; 1877 1878 otx2_sync_mbox_msg(&pf->mbox); 1879 mutex_unlock(&pf->mbox.lock); 1880 } 1881 1882 static void otx2_set_irq_coalesce(struct otx2_nic *pfvf) 1883 { 1884 int cint; 1885 1886 for (cint = 0; cint < pfvf->hw.cint_cnt; cint++) 1887 otx2_config_irq_coalescing(pfvf, cint); 1888 } 1889 1890 static void otx2_dim_work(struct work_struct *w) 1891 { 1892 struct dim_cq_moder cur_moder; 1893 struct otx2_cq_poll *cq_poll; 1894 struct otx2_nic *pfvf; 1895 struct dim *dim; 1896 1897 dim = container_of(w, struct dim, work); 1898 cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); 1899 cq_poll = container_of(dim, struct otx2_cq_poll, dim); 1900 pfvf = (struct otx2_nic *)cq_poll->dev; 1901 pfvf->hw.cq_time_wait = (cur_moder.usec > CQ_TIMER_THRESH_MAX) ? 1902 CQ_TIMER_THRESH_MAX : cur_moder.usec; 1903 pfvf->hw.cq_ecount_wait = (cur_moder.pkts > NAPI_POLL_WEIGHT) ? 1904 NAPI_POLL_WEIGHT : cur_moder.pkts; 1905 otx2_set_irq_coalesce(pfvf); 1906 dim->state = DIM_START_MEASURE; 1907 } 1908 1909 void otx2_free_queue_mem(struct otx2_qset *qset) 1910 { 1911 kfree(qset->sq); 1912 qset->sq = NULL; 1913 kfree(qset->cq); 1914 qset->cq = NULL; 1915 kfree(qset->rq); 1916 qset->rq = NULL; 1917 kfree(qset->napi); 1918 qset->napi = NULL; 1919 } 1920 EXPORT_SYMBOL(otx2_free_queue_mem); 1921 1922 int otx2_alloc_queue_mem(struct otx2_nic *pf) 1923 { 1924 struct otx2_qset *qset = &pf->qset; 1925 struct otx2_cq_poll *cq_poll; 1926 1927 /* RQ and SQs are mapped to different CQs, 1928 * so find out max CQ IRQs (i.e CINTs) needed. 1929 */ 1930 pf->hw.non_qos_queues = pf->hw.tx_queues + pf->hw.xdp_queues; 1931 pf->hw.cint_cnt = max3(pf->hw.rx_queues, pf->hw.tx_queues, 1932 pf->hw.tc_tx_queues); 1933 1934 pf->qset.cq_cnt = pf->hw.rx_queues + otx2_get_total_tx_queues(pf); 1935 1936 qset->napi = kzalloc_objs(*cq_poll, pf->hw.cint_cnt); 1937 if (!qset->napi) 1938 return -ENOMEM; 1939 1940 /* CQ size of RQ */ 1941 qset->rqe_cnt = qset->rqe_cnt ? qset->rqe_cnt : Q_COUNT(Q_SIZE_256); 1942 /* CQ size of SQ */ 1943 qset->sqe_cnt = qset->sqe_cnt ? qset->sqe_cnt : Q_COUNT(Q_SIZE_4K); 1944 1945 qset->cq = kzalloc_objs(struct otx2_cq_queue, pf->qset.cq_cnt); 1946 if (!qset->cq) 1947 goto err_free_mem; 1948 1949 qset->sq = kzalloc_objs(struct otx2_snd_queue, 1950 otx2_get_total_tx_queues(pf)); 1951 if (!qset->sq) 1952 goto err_free_mem; 1953 1954 qset->rq = kzalloc_objs(struct otx2_rcv_queue, pf->hw.rx_queues); 1955 if (!qset->rq) 1956 goto err_free_mem; 1957 1958 return 0; 1959 1960 err_free_mem: 1961 otx2_free_queue_mem(qset); 1962 return -ENOMEM; 1963 } 1964 EXPORT_SYMBOL(otx2_alloc_queue_mem); 1965 1966 int otx2_open(struct net_device *netdev) 1967 { 1968 struct otx2_nic *pf = netdev_priv(netdev); 1969 struct otx2_cq_poll *cq_poll = NULL; 1970 struct otx2_qset *qset = &pf->qset; 1971 int err = 0, qidx, vec; 1972 char *irq_name; 1973 1974 netif_carrier_off(netdev); 1975 1976 err = otx2_alloc_queue_mem(pf); 1977 if (err) 1978 return err; 1979 1980 err = otx2_init_hw_resources(pf); 1981 if (err) 1982 goto err_free_mem; 1983 1984 /* Register NAPI handler */ 1985 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1986 cq_poll = &qset->napi[qidx]; 1987 cq_poll->cint_idx = qidx; 1988 /* RQ0 & SQ0 are mapped to CINT0 and so on.. 1989 * 'cq_ids[0]' points to RQ's CQ and 1990 * 'cq_ids[1]' points to SQ's CQ and 1991 * 'cq_ids[2]' points to XDP's CQ and 1992 */ 1993 cq_poll->cq_ids[CQ_RX] = 1994 (qidx < pf->hw.rx_queues) ? qidx : CINT_INVALID_CQ; 1995 cq_poll->cq_ids[CQ_TX] = (qidx < pf->hw.tx_queues) ? 1996 qidx + pf->hw.rx_queues : CINT_INVALID_CQ; 1997 if (pf->xdp_prog) 1998 cq_poll->cq_ids[CQ_XDP] = (qidx < pf->hw.xdp_queues) ? 1999 (qidx + pf->hw.rx_queues + 2000 pf->hw.tx_queues) : 2001 CINT_INVALID_CQ; 2002 else 2003 cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ; 2004 2005 cq_poll->cq_ids[CQ_QOS] = (qidx < pf->hw.tc_tx_queues) ? 2006 (qidx + pf->hw.rx_queues + 2007 pf->hw.non_qos_queues) : 2008 CINT_INVALID_CQ; 2009 2010 cq_poll->dev = (void *)pf; 2011 cq_poll->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE; 2012 INIT_WORK(&cq_poll->dim.work, otx2_dim_work); 2013 netif_napi_add(netdev, &cq_poll->napi, otx2_napi_handler); 2014 napi_enable(&cq_poll->napi); 2015 } 2016 2017 /* Set maximum frame size allowed in HW */ 2018 err = otx2_hw_set_mtu(pf, netdev->mtu); 2019 if (err) 2020 goto err_disable_napi; 2021 2022 /* Setup segmentation algorithms, if failed, clear offload capability */ 2023 otx2_setup_segmentation(pf); 2024 2025 /* Initialize RSS */ 2026 err = otx2_rss_init(pf); 2027 if (err) 2028 goto err_disable_napi; 2029 2030 /* Register Queue IRQ handlers */ 2031 vec = pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START; 2032 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 2033 2034 snprintf(irq_name, NAME_SIZE, "%s-qerr", pf->netdev->name); 2035 2036 err = request_irq(pci_irq_vector(pf->pdev, vec), 2037 otx2_q_intr_handler, 0, irq_name, pf); 2038 if (err) { 2039 dev_err(pf->dev, 2040 "RVUPF%d: IRQ registration failed for QERR\n", 2041 rvu_get_pf(pf->pdev, pf->pcifunc)); 2042 goto err_disable_napi; 2043 } 2044 2045 /* Enable QINT IRQ */ 2046 otx2_write64(pf, NIX_LF_QINTX_ENA_W1S(0), BIT_ULL(0)); 2047 2048 /* Register CQ IRQ handlers */ 2049 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 2050 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 2051 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 2052 int name_len; 2053 2054 name_len = snprintf(irq_name, NAME_SIZE, "%s-rxtx-%d", 2055 pf->netdev->name, qidx); 2056 if (name_len >= NAME_SIZE) { 2057 dev_err(pf->dev, 2058 "RVUPF%d: IRQ registration failed for CQ%d, irq name is too long\n", 2059 rvu_get_pf(pf->pdev, pf->pcifunc), qidx); 2060 err = -EINVAL; 2061 goto err_free_cints; 2062 } 2063 2064 err = request_irq(pci_irq_vector(pf->pdev, vec), 2065 otx2_cq_intr_handler, 0, irq_name, 2066 &qset->napi[qidx]); 2067 if (err) { 2068 dev_err(pf->dev, 2069 "RVUPF%d: IRQ registration failed for CQ%d\n", 2070 rvu_get_pf(pf->pdev, pf->pcifunc), qidx); 2071 goto err_free_cints; 2072 } 2073 vec++; 2074 2075 otx2_config_irq_coalescing(pf, qidx); 2076 2077 /* Enable CQ IRQ */ 2078 otx2_write64(pf, NIX_LF_CINTX_INT(qidx), BIT_ULL(0)); 2079 otx2_write64(pf, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0)); 2080 } 2081 2082 otx2_set_cints_affinity(pf); 2083 2084 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 2085 otx2_enable_rxvlan(pf, true); 2086 2087 /* When reinitializing enable time stamping if it is enabled before */ 2088 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) { 2089 pf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 2090 otx2_config_hw_tx_tstamp(pf, true); 2091 } 2092 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) { 2093 pf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 2094 otx2_config_hw_rx_tstamp(pf, true); 2095 } 2096 2097 pf->flags &= ~OTX2_FLAG_INTF_DOWN; 2098 pf->flags &= ~OTX2_FLAG_PORT_UP; 2099 /* 'intf_down' may be checked on any cpu */ 2100 smp_wmb(); 2101 2102 /* Enable QoS configuration before starting tx queues */ 2103 otx2_qos_config_txschq(pf); 2104 2105 /* we have already received link status notification */ 2106 if (pf->linfo.link_up && !(pf->pcifunc & RVU_PFVF_FUNC_MASK)) 2107 otx2_handle_link_event(pf); 2108 2109 /* Install DMAC Filters */ 2110 if (pf->flags & OTX2_FLAG_DMACFLTR_SUPPORT) 2111 otx2_dmacflt_reinstall_flows(pf); 2112 2113 otx2_tc_apply_ingress_police_rules(pf); 2114 2115 err = otx2_rxtx_enable(pf, true); 2116 /* If a mbox communication error happens at this point then interface 2117 * will end up in a state such that it is in down state but hardware 2118 * mcam entries are enabled to receive the packets. Hence disable the 2119 * packet I/O. 2120 */ 2121 if (err == -EIO) 2122 goto err_disable_rxtx; 2123 else if (err) 2124 goto err_tx_stop_queues; 2125 2126 otx2_do_set_rx_mode(pf); 2127 2128 return 0; 2129 2130 err_disable_rxtx: 2131 otx2_rxtx_enable(pf, false); 2132 err_tx_stop_queues: 2133 netif_tx_stop_all_queues(netdev); 2134 netif_carrier_off(netdev); 2135 pf->flags |= OTX2_FLAG_INTF_DOWN; 2136 err_free_cints: 2137 otx2_free_cints(pf, qidx); 2138 vec = pci_irq_vector(pf->pdev, 2139 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 2140 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 2141 free_irq(vec, pf); 2142 err_disable_napi: 2143 otx2_disable_napi(pf); 2144 otx2_free_hw_resources(pf); 2145 err_free_mem: 2146 otx2_free_queue_mem(qset); 2147 return err; 2148 } 2149 EXPORT_SYMBOL(otx2_open); 2150 2151 int otx2_stop(struct net_device *netdev) 2152 { 2153 struct otx2_nic *pf = netdev_priv(netdev); 2154 struct otx2_cq_poll *cq_poll = NULL; 2155 struct otx2_qset *qset = &pf->qset; 2156 int qidx, vec, wrk; 2157 2158 /* If the DOWN flag is set resources are already freed */ 2159 if (pf->flags & OTX2_FLAG_INTF_DOWN) 2160 return 0; 2161 2162 netif_carrier_off(netdev); 2163 netif_tx_stop_all_queues(netdev); 2164 2165 pf->flags |= OTX2_FLAG_INTF_DOWN; 2166 /* 'intf_down' may be checked on any cpu */ 2167 smp_wmb(); 2168 2169 /* First stop packet Rx/Tx */ 2170 otx2_rxtx_enable(pf, false); 2171 2172 /* Clear RSS enable flag */ 2173 pf->hw.rss_info.enable = false; 2174 2175 /* Cleanup Queue IRQ */ 2176 vec = pci_irq_vector(pf->pdev, 2177 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 2178 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 2179 free_irq(vec, pf); 2180 2181 /* Cleanup CQ NAPI and IRQ */ 2182 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 2183 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 2184 /* Disable interrupt */ 2185 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 2186 2187 synchronize_irq(pci_irq_vector(pf->pdev, vec)); 2188 2189 cq_poll = &qset->napi[qidx]; 2190 napi_synchronize(&cq_poll->napi); 2191 vec++; 2192 } 2193 2194 netif_tx_disable(netdev); 2195 2196 for (wrk = 0; wrk < pf->qset.cq_cnt; wrk++) 2197 cancel_delayed_work_sync(&pf->refill_wrk[wrk].pool_refill_work); 2198 devm_kfree(pf->dev, pf->refill_wrk); 2199 2200 otx2_free_hw_resources(pf); 2201 otx2_free_cints(pf, pf->hw.cint_cnt); 2202 otx2_disable_napi(pf); 2203 2204 for (qidx = 0; qidx < netdev->num_tx_queues; qidx++) 2205 netdev_tx_reset_queue(netdev_get_tx_queue(netdev, qidx)); 2206 2207 otx2_free_queue_mem(qset); 2208 /* Do not clear RQ/SQ ringsize settings */ 2209 memset_startat(qset, 0, sqe_cnt); 2210 return 0; 2211 } 2212 EXPORT_SYMBOL(otx2_stop); 2213 2214 static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev) 2215 { 2216 struct otx2_nic *pf = netdev_priv(netdev); 2217 int qidx = skb_get_queue_mapping(skb); 2218 struct otx2_dev_stats *dev_stats; 2219 struct otx2_snd_queue *sq; 2220 struct netdev_queue *txq; 2221 int sq_idx; 2222 2223 /* XDP SQs are not mapped with TXQs 2224 * advance qid to derive correct sq mapped with QOS 2225 */ 2226 sq_idx = (qidx >= pf->hw.tx_queues) ? (qidx + pf->hw.xdp_queues) : qidx; 2227 2228 /* Check for minimum and maximum packet length */ 2229 if (skb->len <= ETH_HLEN || 2230 (!skb_shinfo(skb)->gso_size && skb->len > pf->tx_max_pktlen)) { 2231 dev_stats = &pf->hw.dev_stats; 2232 atomic_long_inc(&dev_stats->tx_discards); 2233 dev_kfree_skb(skb); 2234 return NETDEV_TX_OK; 2235 } 2236 2237 sq = &pf->qset.sq[sq_idx]; 2238 txq = netdev_get_tx_queue(netdev, qidx); 2239 2240 if (!otx2_sq_append_skb(pf, txq, sq, skb, qidx)) { 2241 netif_tx_stop_queue(txq); 2242 2243 /* Check again, incase SQBs got freed up */ 2244 smp_mb(); 2245 if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb) 2246 > sq->sqe_thresh) 2247 netif_tx_wake_queue(txq); 2248 2249 return NETDEV_TX_BUSY; 2250 } 2251 2252 return NETDEV_TX_OK; 2253 } 2254 2255 static int otx2_qos_select_htb_queue(struct otx2_nic *pf, struct sk_buff *skb, 2256 u16 htb_maj_id) 2257 { 2258 u16 classid; 2259 2260 if ((TC_H_MAJ(skb->priority) >> 16) == htb_maj_id) 2261 classid = TC_H_MIN(skb->priority); 2262 else 2263 classid = READ_ONCE(pf->qos.defcls); 2264 2265 if (!classid) 2266 return 0; 2267 2268 return otx2_get_txq_by_classid(pf, classid); 2269 } 2270 2271 u16 otx2_select_queue(struct net_device *netdev, struct sk_buff *skb, 2272 struct net_device *sb_dev) 2273 { 2274 struct otx2_nic *pf = netdev_priv(netdev); 2275 bool qos_enabled; 2276 #ifdef CONFIG_DCB 2277 u8 vlan_prio; 2278 #endif 2279 int txq; 2280 2281 qos_enabled = netdev->real_num_tx_queues > pf->hw.tx_queues; 2282 if (unlikely(qos_enabled)) { 2283 /* This smp_load_acquire() pairs with smp_store_release() in 2284 * otx2_qos_root_add() called from htb offload root creation 2285 */ 2286 u16 htb_maj_id = smp_load_acquire(&pf->qos.maj_id); 2287 2288 if (unlikely(htb_maj_id)) { 2289 txq = otx2_qos_select_htb_queue(pf, skb, htb_maj_id); 2290 if (txq > 0) 2291 return txq; 2292 goto process_pfc; 2293 } 2294 } 2295 2296 process_pfc: 2297 #ifdef CONFIG_DCB 2298 if (!skb_vlan_tag_present(skb)) 2299 goto pick_tx; 2300 2301 vlan_prio = skb->vlan_tci >> 13; 2302 if ((vlan_prio > pf->hw.tx_queues - 1) || 2303 !pf->pfc_alloc_status[vlan_prio]) 2304 goto pick_tx; 2305 2306 return vlan_prio; 2307 2308 pick_tx: 2309 #endif 2310 txq = netdev_pick_tx(netdev, skb, NULL); 2311 if (unlikely(qos_enabled)) 2312 return txq % pf->hw.tx_queues; 2313 2314 return txq; 2315 } 2316 EXPORT_SYMBOL(otx2_select_queue); 2317 2318 static netdev_features_t otx2_fix_features(struct net_device *dev, 2319 netdev_features_t features) 2320 { 2321 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2322 features |= NETIF_F_HW_VLAN_STAG_RX; 2323 else 2324 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2325 2326 return features; 2327 } 2328 2329 static void otx2_set_rx_mode(struct net_device *netdev) 2330 { 2331 struct otx2_nic *pf = netdev_priv(netdev); 2332 2333 queue_work(pf->otx2_wq, &pf->rx_mode_work); 2334 } 2335 2336 static void otx2_rx_mode_wrk_handler(struct work_struct *work) 2337 { 2338 struct otx2_nic *pf = container_of(work, struct otx2_nic, rx_mode_work); 2339 2340 otx2_do_set_rx_mode(pf); 2341 } 2342 2343 static int otx2_set_features(struct net_device *netdev, 2344 netdev_features_t features) 2345 { 2346 netdev_features_t changed = features ^ netdev->features; 2347 struct otx2_nic *pf = netdev_priv(netdev); 2348 2349 if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev)) 2350 return otx2_cgx_config_loopback(pf, 2351 features & NETIF_F_LOOPBACK); 2352 2353 if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(netdev)) 2354 return otx2_enable_rxvlan(pf, 2355 features & NETIF_F_HW_VLAN_CTAG_RX); 2356 2357 if (changed & NETIF_F_HW_ESP) 2358 return cn10k_ipsec_ethtool_init(netdev, 2359 features & NETIF_F_HW_ESP); 2360 2361 return otx2_handle_ntuple_tc_features(netdev, features); 2362 } 2363 2364 static void otx2_reset_task(struct work_struct *work) 2365 { 2366 struct otx2_nic *pf = container_of(work, struct otx2_nic, reset_task); 2367 2368 if (!netif_running(pf->netdev)) 2369 return; 2370 2371 rtnl_lock(); 2372 otx2_stop(pf->netdev); 2373 pf->reset_count++; 2374 otx2_open(pf->netdev); 2375 netif_trans_update(pf->netdev); 2376 rtnl_unlock(); 2377 } 2378 2379 static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable) 2380 { 2381 struct msg_req *req; 2382 int err; 2383 2384 if (pfvf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED && enable) 2385 return 0; 2386 2387 mutex_lock(&pfvf->mbox.lock); 2388 if (enable) 2389 req = otx2_mbox_alloc_msg_cgx_ptp_rx_enable(&pfvf->mbox); 2390 else 2391 req = otx2_mbox_alloc_msg_cgx_ptp_rx_disable(&pfvf->mbox); 2392 if (!req) { 2393 mutex_unlock(&pfvf->mbox.lock); 2394 return -ENOMEM; 2395 } 2396 2397 err = otx2_sync_mbox_msg(&pfvf->mbox); 2398 if (err) { 2399 mutex_unlock(&pfvf->mbox.lock); 2400 return err; 2401 } 2402 2403 mutex_unlock(&pfvf->mbox.lock); 2404 if (enable) 2405 pfvf->flags |= OTX2_FLAG_RX_TSTAMP_ENABLED; 2406 else 2407 pfvf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 2408 return 0; 2409 } 2410 2411 static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable) 2412 { 2413 struct msg_req *req; 2414 int err; 2415 2416 if (pfvf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED && enable) 2417 return 0; 2418 2419 mutex_lock(&pfvf->mbox.lock); 2420 if (enable) 2421 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_enable(&pfvf->mbox); 2422 else 2423 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_disable(&pfvf->mbox); 2424 if (!req) { 2425 mutex_unlock(&pfvf->mbox.lock); 2426 return -ENOMEM; 2427 } 2428 2429 err = otx2_sync_mbox_msg(&pfvf->mbox); 2430 if (err) { 2431 mutex_unlock(&pfvf->mbox.lock); 2432 return err; 2433 } 2434 2435 mutex_unlock(&pfvf->mbox.lock); 2436 if (enable) 2437 pfvf->flags |= OTX2_FLAG_TX_TSTAMP_ENABLED; 2438 else 2439 pfvf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 2440 return 0; 2441 } 2442 2443 int otx2_config_hwtstamp_get(struct net_device *netdev, 2444 struct kernel_hwtstamp_config *config) 2445 { 2446 struct otx2_nic *pfvf = netdev_priv(netdev); 2447 2448 *config = pfvf->tstamp; 2449 return 0; 2450 } 2451 EXPORT_SYMBOL(otx2_config_hwtstamp_get); 2452 2453 int otx2_config_hwtstamp_set(struct net_device *netdev, 2454 struct kernel_hwtstamp_config *config, 2455 struct netlink_ext_ack *extack) 2456 { 2457 struct otx2_nic *pfvf = netdev_priv(netdev); 2458 2459 if (!pfvf->ptp) 2460 return -ENODEV; 2461 2462 switch (config->tx_type) { 2463 case HWTSTAMP_TX_OFF: 2464 if (pfvf->flags & OTX2_FLAG_PTP_ONESTEP_SYNC) 2465 pfvf->flags &= ~OTX2_FLAG_PTP_ONESTEP_SYNC; 2466 2467 cancel_delayed_work(&pfvf->ptp->synctstamp_work); 2468 otx2_config_hw_tx_tstamp(pfvf, false); 2469 break; 2470 case HWTSTAMP_TX_ONESTEP_SYNC: 2471 if (!test_bit(CN10K_PTP_ONESTEP, &pfvf->hw.cap_flag)) { 2472 NL_SET_ERR_MSG_MOD(extack, 2473 "One-step time stamping is not supported"); 2474 return -ERANGE; 2475 } 2476 pfvf->flags |= OTX2_FLAG_PTP_ONESTEP_SYNC; 2477 schedule_delayed_work(&pfvf->ptp->synctstamp_work, 2478 msecs_to_jiffies(500)); 2479 fallthrough; 2480 case HWTSTAMP_TX_ON: 2481 otx2_config_hw_tx_tstamp(pfvf, true); 2482 break; 2483 default: 2484 return -ERANGE; 2485 } 2486 2487 switch (config->rx_filter) { 2488 case HWTSTAMP_FILTER_NONE: 2489 otx2_config_hw_rx_tstamp(pfvf, false); 2490 break; 2491 case HWTSTAMP_FILTER_ALL: 2492 case HWTSTAMP_FILTER_SOME: 2493 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2494 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2495 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2496 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2497 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2498 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2499 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2500 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2501 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2502 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2503 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2504 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2505 otx2_config_hw_rx_tstamp(pfvf, true); 2506 config->rx_filter = HWTSTAMP_FILTER_ALL; 2507 break; 2508 default: 2509 return -ERANGE; 2510 } 2511 2512 pfvf->tstamp = *config; 2513 2514 return 0; 2515 } 2516 EXPORT_SYMBOL(otx2_config_hwtstamp_set); 2517 2518 static int otx2_do_set_vf_mac(struct otx2_nic *pf, int vf, const u8 *mac) 2519 { 2520 struct npc_install_flow_req *req; 2521 int err; 2522 2523 mutex_lock(&pf->mbox.lock); 2524 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2525 if (!req) { 2526 err = -ENOMEM; 2527 goto out; 2528 } 2529 2530 ether_addr_copy(req->packet.dmac, mac); 2531 eth_broadcast_addr((u8 *)&req->mask.dmac); 2532 req->features = BIT_ULL(NPC_DMAC); 2533 req->channel = pf->hw.rx_chan_base; 2534 req->intf = NIX_INTF_RX; 2535 req->default_rule = 1; 2536 req->append = 1; 2537 req->vf = vf + 1; 2538 req->op = NIX_RX_ACTION_DEFAULT; 2539 2540 err = otx2_sync_mbox_msg(&pf->mbox); 2541 out: 2542 mutex_unlock(&pf->mbox.lock); 2543 return err; 2544 } 2545 2546 static int otx2_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 2547 { 2548 struct otx2_nic *pf = netdev_priv(netdev); 2549 struct pci_dev *pdev = pf->pdev; 2550 struct otx2_vf_config *config; 2551 int ret; 2552 2553 if (!netif_running(netdev)) 2554 return -EAGAIN; 2555 2556 if (vf >= pf->total_vfs) 2557 return -EINVAL; 2558 2559 if (!is_valid_ether_addr(mac)) 2560 return -EINVAL; 2561 2562 config = &pf->vf_configs[vf]; 2563 ether_addr_copy(config->mac, mac); 2564 2565 ret = otx2_do_set_vf_mac(pf, vf, mac); 2566 if (ret == 0) 2567 dev_info(&pdev->dev, 2568 "Load/Reload VF driver\n"); 2569 2570 return ret; 2571 } 2572 2573 static int otx2_do_set_vf_vlan(struct otx2_nic *pf, int vf, u16 vlan, u8 qos, 2574 __be16 proto) 2575 { 2576 struct otx2_flow_config *flow_cfg = pf->flow_cfg; 2577 struct nix_vtag_config_rsp *vtag_rsp; 2578 struct npc_delete_flow_req *del_req; 2579 struct nix_vtag_config *vtag_req; 2580 struct npc_install_flow_req *req; 2581 struct otx2_vf_config *config; 2582 int err = 0; 2583 u32 idx; 2584 2585 config = &pf->vf_configs[vf]; 2586 2587 if (!vlan && !config->vlan) 2588 goto out; 2589 2590 mutex_lock(&pf->mbox.lock); 2591 2592 /* free old tx vtag entry */ 2593 if (config->vlan) { 2594 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2595 if (!vtag_req) { 2596 err = -ENOMEM; 2597 goto out; 2598 } 2599 vtag_req->cfg_type = 0; 2600 vtag_req->tx.free_vtag0 = 1; 2601 vtag_req->tx.vtag0_idx = config->tx_vtag_idx; 2602 2603 err = otx2_sync_mbox_msg(&pf->mbox); 2604 if (err) 2605 goto out; 2606 } 2607 2608 if (!vlan && config->vlan) { 2609 /* rx */ 2610 del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox); 2611 if (!del_req) { 2612 err = -ENOMEM; 2613 goto out; 2614 } 2615 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2616 del_req->entry = 2617 flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2618 err = otx2_sync_mbox_msg(&pf->mbox); 2619 if (err) 2620 goto out; 2621 2622 /* tx */ 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_TX_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 2633 goto out; 2634 } 2635 2636 /* rx */ 2637 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2638 if (!req) { 2639 err = -ENOMEM; 2640 goto out; 2641 } 2642 2643 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2644 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2645 req->packet.vlan_tci = htons(vlan); 2646 req->mask.vlan_tci = htons(VLAN_VID_MASK); 2647 /* af fills the destination mac addr */ 2648 eth_broadcast_addr((u8 *)&req->mask.dmac); 2649 req->features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_DMAC); 2650 req->channel = pf->hw.rx_chan_base; 2651 req->intf = NIX_INTF_RX; 2652 req->vf = vf + 1; 2653 req->op = NIX_RX_ACTION_DEFAULT; 2654 req->vtag0_valid = true; 2655 req->vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE7; 2656 req->set_cntr = 1; 2657 2658 err = otx2_sync_mbox_msg(&pf->mbox); 2659 if (err) 2660 goto out; 2661 2662 /* tx */ 2663 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2664 if (!vtag_req) { 2665 err = -ENOMEM; 2666 goto out; 2667 } 2668 2669 /* configure tx vtag params */ 2670 vtag_req->vtag_size = VTAGSIZE_T4; 2671 vtag_req->cfg_type = 0; /* tx vlan cfg */ 2672 vtag_req->tx.cfg_vtag0 = 1; 2673 vtag_req->tx.vtag0 = ((u64)ntohs(proto) << 16) | vlan; 2674 2675 err = otx2_sync_mbox_msg(&pf->mbox); 2676 if (err) 2677 goto out; 2678 2679 vtag_rsp = (struct nix_vtag_config_rsp *)otx2_mbox_get_rsp 2680 (&pf->mbox.mbox, 0, &vtag_req->hdr); 2681 if (IS_ERR(vtag_rsp)) { 2682 err = PTR_ERR(vtag_rsp); 2683 goto out; 2684 } 2685 config->tx_vtag_idx = vtag_rsp->vtag0_idx; 2686 2687 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2688 if (!req) { 2689 err = -ENOMEM; 2690 goto out; 2691 } 2692 2693 eth_zero_addr((u8 *)&req->mask.dmac); 2694 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX); 2695 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2696 req->features = BIT_ULL(NPC_DMAC); 2697 req->channel = pf->hw.tx_chan_base; 2698 req->intf = NIX_INTF_TX; 2699 req->vf = vf + 1; 2700 req->op = NIX_TX_ACTIONOP_UCAST_DEFAULT; 2701 req->vtag0_def = vtag_rsp->vtag0_idx; 2702 req->vtag0_op = VTAG_INSERT; 2703 req->set_cntr = 1; 2704 2705 err = otx2_sync_mbox_msg(&pf->mbox); 2706 out: 2707 config->vlan = vlan; 2708 mutex_unlock(&pf->mbox.lock); 2709 return err; 2710 } 2711 2712 static int otx2_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos, 2713 __be16 proto) 2714 { 2715 struct otx2_nic *pf = netdev_priv(netdev); 2716 struct pci_dev *pdev = pf->pdev; 2717 2718 if (!netif_running(netdev)) 2719 return -EAGAIN; 2720 2721 if (vf >= pci_num_vf(pdev)) 2722 return -EINVAL; 2723 2724 /* qos is currently unsupported */ 2725 if (vlan >= VLAN_N_VID || qos) 2726 return -EINVAL; 2727 2728 if (proto != htons(ETH_P_8021Q)) 2729 return -EPROTONOSUPPORT; 2730 2731 if (!(pf->flags & OTX2_FLAG_VF_VLAN_SUPPORT)) 2732 return -EOPNOTSUPP; 2733 2734 return otx2_do_set_vf_vlan(pf, vf, vlan, qos, proto); 2735 } 2736 2737 static int otx2_get_vf_config(struct net_device *netdev, int vf, 2738 struct ifla_vf_info *ivi) 2739 { 2740 struct otx2_nic *pf = netdev_priv(netdev); 2741 struct pci_dev *pdev = pf->pdev; 2742 struct otx2_vf_config *config; 2743 2744 if (!netif_running(netdev)) 2745 return -EAGAIN; 2746 2747 if (vf >= pci_num_vf(pdev)) 2748 return -EINVAL; 2749 2750 config = &pf->vf_configs[vf]; 2751 ivi->vf = vf; 2752 ether_addr_copy(ivi->mac, config->mac); 2753 ivi->vlan = config->vlan; 2754 ivi->trusted = config->trusted; 2755 2756 return 0; 2757 } 2758 2759 static int otx2_xdp_xmit_tx(struct otx2_nic *pf, struct xdp_frame *xdpf, 2760 int qidx) 2761 { 2762 u64 dma_addr; 2763 int err = 0; 2764 2765 dma_addr = otx2_dma_map_page(pf, virt_to_page(xdpf->data), 2766 offset_in_page(xdpf->data), xdpf->len, 2767 DMA_TO_DEVICE); 2768 if (dma_mapping_error(pf->dev, dma_addr)) 2769 return -ENOMEM; 2770 2771 err = otx2_xdp_sq_append_pkt(pf, xdpf, dma_addr, xdpf->len, 2772 qidx, OTX2_XDP_REDIRECT); 2773 if (!err) { 2774 otx2_dma_unmap_page(pf, dma_addr, xdpf->len, DMA_TO_DEVICE); 2775 xdp_return_frame(xdpf); 2776 return -ENOMEM; 2777 } 2778 return 0; 2779 } 2780 2781 static int otx2_xdp_xmit(struct net_device *netdev, int n, 2782 struct xdp_frame **frames, u32 flags) 2783 { 2784 struct otx2_nic *pf = netdev_priv(netdev); 2785 int qidx = smp_processor_id(); 2786 struct otx2_snd_queue *sq; 2787 int drops = 0, i; 2788 2789 if (!netif_running(netdev)) 2790 return -ENETDOWN; 2791 2792 qidx += pf->hw.tx_queues; 2793 sq = pf->xdp_prog ? &pf->qset.sq[qidx] : NULL; 2794 2795 /* Abort xmit if xdp queue is not */ 2796 if (unlikely(!sq)) 2797 return -ENXIO; 2798 2799 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 2800 return -EINVAL; 2801 2802 for (i = 0; i < n; i++) { 2803 struct xdp_frame *xdpf = frames[i]; 2804 int err; 2805 2806 err = otx2_xdp_xmit_tx(pf, xdpf, qidx); 2807 if (err) 2808 drops++; 2809 } 2810 return n - drops; 2811 } 2812 2813 static int otx2_xdp_setup(struct otx2_nic *pf, struct bpf_prog *prog) 2814 { 2815 struct net_device *dev = pf->netdev; 2816 bool if_up = netif_running(pf->netdev); 2817 struct bpf_prog *old_prog; 2818 2819 if (prog && dev->mtu > MAX_XDP_MTU) { 2820 netdev_warn(dev, "Jumbo frames not yet supported with XDP\n"); 2821 return -EOPNOTSUPP; 2822 } 2823 2824 if (if_up) 2825 otx2_stop(pf->netdev); 2826 2827 old_prog = xchg(&pf->xdp_prog, prog); 2828 2829 if (old_prog) 2830 bpf_prog_put(old_prog); 2831 2832 if (pf->xdp_prog) 2833 bpf_prog_add(pf->xdp_prog, pf->hw.rx_queues - 1); 2834 2835 /* Network stack and XDP shared same rx queues. 2836 * Use separate tx queues for XDP and network stack. 2837 */ 2838 if (pf->xdp_prog) { 2839 pf->hw.xdp_queues = pf->hw.rx_queues; 2840 xdp_features_set_redirect_target(dev, false); 2841 } else { 2842 pf->hw.xdp_queues = 0; 2843 xdp_features_clear_redirect_target(dev); 2844 } 2845 2846 if (if_up) 2847 otx2_open(pf->netdev); 2848 2849 return 0; 2850 } 2851 2852 static int otx2_xdp(struct net_device *netdev, struct netdev_bpf *xdp) 2853 { 2854 struct otx2_nic *pf = netdev_priv(netdev); 2855 2856 switch (xdp->command) { 2857 case XDP_SETUP_PROG: 2858 return otx2_xdp_setup(pf, xdp->prog); 2859 case XDP_SETUP_XSK_POOL: 2860 return otx2_xsk_pool_setup(pf, xdp->xsk.pool, xdp->xsk.queue_id); 2861 default: 2862 return -EINVAL; 2863 } 2864 } 2865 2866 static int otx2_set_vf_permissions(struct otx2_nic *pf, int vf, 2867 int req_perm) 2868 { 2869 struct set_vf_perm *req; 2870 int rc; 2871 2872 mutex_lock(&pf->mbox.lock); 2873 req = otx2_mbox_alloc_msg_set_vf_perm(&pf->mbox); 2874 if (!req) { 2875 rc = -ENOMEM; 2876 goto out; 2877 } 2878 2879 /* Let AF reset VF permissions as sriov is disabled */ 2880 if (req_perm == OTX2_RESET_VF_PERM) { 2881 req->flags |= RESET_VF_PERM; 2882 } else if (req_perm == OTX2_TRUSTED_VF) { 2883 if (pf->vf_configs[vf].trusted) 2884 req->flags |= VF_TRUSTED; 2885 } 2886 2887 req->vf = vf; 2888 rc = otx2_sync_mbox_msg(&pf->mbox); 2889 out: 2890 mutex_unlock(&pf->mbox.lock); 2891 return rc; 2892 } 2893 2894 static int otx2_ndo_set_vf_trust(struct net_device *netdev, int vf, 2895 bool enable) 2896 { 2897 struct otx2_nic *pf = netdev_priv(netdev); 2898 struct pci_dev *pdev = pf->pdev; 2899 int rc; 2900 2901 if (vf >= pci_num_vf(pdev)) 2902 return -EINVAL; 2903 2904 if (pf->vf_configs[vf].trusted == enable) 2905 return 0; 2906 2907 pf->vf_configs[vf].trusted = enable; 2908 rc = otx2_set_vf_permissions(pf, vf, OTX2_TRUSTED_VF); 2909 2910 if (rc) { 2911 pf->vf_configs[vf].trusted = !enable; 2912 } else { 2913 netdev_info(pf->netdev, "VF %d is %strusted\n", 2914 vf, enable ? "" : "not "); 2915 otx2_set_rx_mode(netdev); 2916 } 2917 2918 return rc; 2919 } 2920 2921 static const struct net_device_ops otx2_netdev_ops = { 2922 .ndo_open = otx2_open, 2923 .ndo_stop = otx2_stop, 2924 .ndo_start_xmit = otx2_xmit, 2925 .ndo_select_queue = otx2_select_queue, 2926 .ndo_fix_features = otx2_fix_features, 2927 .ndo_set_mac_address = otx2_set_mac_address, 2928 .ndo_change_mtu = otx2_change_mtu, 2929 .ndo_set_rx_mode = otx2_set_rx_mode, 2930 .ndo_set_features = otx2_set_features, 2931 .ndo_tx_timeout = otx2_tx_timeout, 2932 .ndo_get_stats64 = otx2_get_stats64, 2933 .ndo_set_vf_mac = otx2_set_vf_mac, 2934 .ndo_set_vf_vlan = otx2_set_vf_vlan, 2935 .ndo_get_vf_config = otx2_get_vf_config, 2936 .ndo_bpf = otx2_xdp, 2937 .ndo_xsk_wakeup = otx2_xsk_wakeup, 2938 .ndo_xdp_xmit = otx2_xdp_xmit, 2939 .ndo_setup_tc = otx2_setup_tc, 2940 .ndo_set_vf_trust = otx2_ndo_set_vf_trust, 2941 .ndo_hwtstamp_get = otx2_config_hwtstamp_get, 2942 .ndo_hwtstamp_set = otx2_config_hwtstamp_set, 2943 }; 2944 2945 int otx2_wq_init(struct otx2_nic *pf) 2946 { 2947 pf->otx2_wq = create_singlethread_workqueue("otx2_wq"); 2948 if (!pf->otx2_wq) 2949 return -ENOMEM; 2950 2951 INIT_WORK(&pf->rx_mode_work, otx2_rx_mode_wrk_handler); 2952 INIT_WORK(&pf->reset_task, otx2_reset_task); 2953 return 0; 2954 } 2955 2956 int otx2_check_pf_usable(struct otx2_nic *nic) 2957 { 2958 u64 rev; 2959 2960 rev = otx2_read64(nic, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_RVUM)); 2961 rev = (rev >> 12) & 0xFF; 2962 /* Check if AF has setup revision for RVUM block, 2963 * otherwise this driver probe should be deferred 2964 * until AF driver comes up. 2965 */ 2966 if (!rev) { 2967 dev_warn(nic->dev, 2968 "AF is not initialized, deferring probe\n"); 2969 return -EPROBE_DEFER; 2970 } 2971 return 0; 2972 } 2973 2974 int otx2_realloc_msix_vectors(struct otx2_nic *pf) 2975 { 2976 struct otx2_hw *hw = &pf->hw; 2977 int num_vec, err; 2978 2979 /* NPA interrupts are inot registered, so alloc only 2980 * upto NIX vector offset. 2981 */ 2982 num_vec = hw->nix_msixoff; 2983 num_vec += NIX_LF_CINT_VEC_START + hw->max_queues; 2984 2985 otx2_disable_mbox_intr(pf); 2986 pci_free_irq_vectors(hw->pdev); 2987 err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX); 2988 if (err < 0) { 2989 dev_err(pf->dev, "%s: Failed to realloc %d IRQ vectors\n", 2990 __func__, num_vec); 2991 return err; 2992 } 2993 2994 return otx2_register_mbox_intr(pf, false); 2995 } 2996 EXPORT_SYMBOL(otx2_realloc_msix_vectors); 2997 2998 static int otx2_sriov_vfcfg_init(struct otx2_nic *pf) 2999 { 3000 int i; 3001 3002 pf->vf_configs = devm_kcalloc(pf->dev, pf->total_vfs, 3003 sizeof(struct otx2_vf_config), 3004 GFP_KERNEL); 3005 if (!pf->vf_configs) 3006 return -ENOMEM; 3007 3008 for (i = 0; i < pf->total_vfs; i++) { 3009 pf->vf_configs[i].pf = pf; 3010 pf->vf_configs[i].intf_down = true; 3011 pf->vf_configs[i].trusted = false; 3012 INIT_DELAYED_WORK(&pf->vf_configs[i].link_event_work, 3013 otx2_vf_link_event_task); 3014 } 3015 3016 return 0; 3017 } 3018 3019 static void otx2_sriov_vfcfg_cleanup(struct otx2_nic *pf) 3020 { 3021 int i; 3022 3023 if (!pf->vf_configs) 3024 return; 3025 3026 for (i = 0; i < pf->total_vfs; i++) { 3027 cancel_delayed_work_sync(&pf->vf_configs[i].link_event_work); 3028 otx2_set_vf_permissions(pf, i, OTX2_RESET_VF_PERM); 3029 } 3030 } 3031 3032 int otx2_init_rsrc(struct pci_dev *pdev, struct otx2_nic *pf) 3033 { 3034 struct device *dev = &pdev->dev; 3035 struct otx2_hw *hw = &pf->hw; 3036 int num_vec, err; 3037 3038 num_vec = pci_msix_vec_count(pdev); 3039 hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE, 3040 GFP_KERNEL); 3041 if (!hw->irq_name) 3042 return -ENOMEM; 3043 3044 hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec, 3045 sizeof(cpumask_var_t), GFP_KERNEL); 3046 if (!hw->affinity_mask) 3047 return -ENOMEM; 3048 3049 /* Map CSRs */ 3050 pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); 3051 if (!pf->reg_base) { 3052 dev_err(dev, "Unable to map physical function CSRs, aborting\n"); 3053 return -ENOMEM; 3054 } 3055 3056 err = otx2_check_pf_usable(pf); 3057 if (err) 3058 return err; 3059 3060 if (!is_cn20k(pf->pdev)) 3061 err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT, 3062 RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX); 3063 else 3064 err = pci_alloc_irq_vectors(hw->pdev, RVU_MBOX_PF_INT_VEC_CNT, 3065 RVU_MBOX_PF_INT_VEC_CNT, 3066 PCI_IRQ_MSIX); 3067 if (err < 0) { 3068 dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n", 3069 __func__, num_vec); 3070 return err; 3071 } 3072 3073 otx2_setup_dev_hw_settings(pf); 3074 3075 if (is_cn20k(pf->pdev)) 3076 cn20k_init(pf); 3077 else 3078 otx2_init_hw_ops(pf); 3079 3080 /* Init PF <=> AF mailbox stuff */ 3081 err = otx2_pfaf_mbox_init(pf); 3082 if (err) 3083 goto err_free_irq_vectors; 3084 3085 /* Register mailbox interrupt */ 3086 err = otx2_register_mbox_intr(pf, true); 3087 if (err) 3088 goto err_mbox_destroy; 3089 3090 /* Request AF to attach NPA and NIX LFs to this PF. 3091 * NIX and NPA LFs are needed for this PF to function as a NIC. 3092 */ 3093 err = otx2_attach_npa_nix(pf); 3094 if (err) 3095 goto err_disable_mbox_intr; 3096 3097 err = otx2_realloc_msix_vectors(pf); 3098 if (err) 3099 goto err_detach_rsrc; 3100 3101 err = cn10k_lmtst_init(pf); 3102 if (err) 3103 goto err_detach_rsrc; 3104 3105 return 0; 3106 3107 err_detach_rsrc: 3108 if (pf->hw.lmt_info) 3109 free_percpu(pf->hw.lmt_info); 3110 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3111 qmem_free(pf->dev, pf->dync_lmt); 3112 otx2_detach_resources(&pf->mbox); 3113 err_disable_mbox_intr: 3114 otx2_disable_mbox_intr(pf); 3115 err_mbox_destroy: 3116 otx2_pfaf_mbox_destroy(pf); 3117 err_free_irq_vectors: 3118 pci_free_irq_vectors(hw->pdev); 3119 3120 return err; 3121 } 3122 EXPORT_SYMBOL(otx2_init_rsrc); 3123 3124 static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3125 { 3126 struct device *dev = &pdev->dev; 3127 int err, qcount, qos_txqs; 3128 struct net_device *netdev; 3129 struct otx2_nic *pf; 3130 struct otx2_hw *hw; 3131 3132 err = pcim_enable_device(pdev); 3133 if (err) { 3134 dev_err(dev, "Failed to enable PCI device\n"); 3135 return err; 3136 } 3137 3138 err = pcim_request_all_regions(pdev, DRV_NAME); 3139 if (err) { 3140 dev_err(dev, "PCI request regions failed 0x%x\n", err); 3141 return err; 3142 } 3143 3144 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); 3145 if (err) { 3146 dev_err(dev, "DMA mask config failed, abort\n"); 3147 return err; 3148 } 3149 3150 pci_set_master(pdev); 3151 3152 /* Set number of queues */ 3153 qcount = min_t(int, num_online_cpus(), OTX2_MAX_CQ_CNT); 3154 qos_txqs = min_t(int, qcount, OTX2_QOS_MAX_LEAF_NODES); 3155 3156 netdev = alloc_etherdev_mqs(sizeof(*pf), qcount + qos_txqs, qcount); 3157 if (!netdev) 3158 return -ENOMEM; 3159 3160 pci_set_drvdata(pdev, netdev); 3161 SET_NETDEV_DEV(netdev, &pdev->dev); 3162 pf = netdev_priv(netdev); 3163 pf->netdev = netdev; 3164 pf->pdev = pdev; 3165 pf->dev = dev; 3166 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 3167 pf->flags |= OTX2_FLAG_INTF_DOWN; 3168 3169 hw = &pf->hw; 3170 hw->pdev = pdev; 3171 hw->rx_queues = qcount; 3172 hw->tx_queues = qcount; 3173 hw->non_qos_queues = qcount; 3174 hw->max_queues = qcount; 3175 hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN; 3176 /* Use CQE of 128 byte descriptor size by default */ 3177 hw->xqe_size = 128; 3178 3179 err = otx2_init_rsrc(pdev, pf); 3180 if (err) 3181 goto err_free_netdev; 3182 3183 err = otx2_set_real_num_queues(netdev, hw->tx_queues, hw->rx_queues); 3184 if (err) 3185 goto err_detach_rsrc; 3186 3187 /* Assign default mac address */ 3188 otx2_get_mac_from_af(netdev); 3189 3190 /* Don't check for error. Proceed without ptp */ 3191 otx2_ptp_init(pf); 3192 3193 /* NPA's pool is a stack to which SW frees buffer pointers via Aura. 3194 * HW allocates buffer pointer from stack and uses it for DMA'ing 3195 * ingress packet. In some scenarios HW can free back allocated buffer 3196 * pointers to pool. This makes it impossible for SW to maintain a 3197 * parallel list where physical addresses of buffer pointers (IOVAs) 3198 * given to HW can be saved for later reference. 3199 * 3200 * So the only way to convert Rx packet's buffer address is to use 3201 * IOMMU's iova_to_phys() handler which translates the address by 3202 * walking through the translation tables. 3203 */ 3204 pf->iommu_domain = iommu_get_domain_for_dev(dev); 3205 3206 netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 3207 NETIF_F_IPV6_CSUM | NETIF_F_RXHASH | 3208 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | 3209 NETIF_F_GSO_UDP_L4); 3210 netdev->features |= netdev->hw_features; 3211 3212 err = otx2_mcam_flow_init(pf); 3213 if (err) 3214 goto err_ptp_destroy; 3215 3216 otx2_set_hw_capabilities(pf); 3217 3218 err = cn10k_mcs_init(pf); 3219 if (err) 3220 goto err_del_mcam_entries; 3221 3222 if (pf->flags & OTX2_FLAG_NTUPLE_SUPPORT) 3223 netdev->hw_features |= NETIF_F_NTUPLE; 3224 3225 if (pf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT) 3226 netdev->priv_flags |= IFF_UNICAST_FLT; 3227 3228 /* Support TSO on tag interface */ 3229 netdev->vlan_features |= netdev->features; 3230 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | 3231 NETIF_F_HW_VLAN_STAG_TX; 3232 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 3233 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX | 3234 NETIF_F_HW_VLAN_STAG_RX; 3235 netdev->features |= netdev->hw_features; 3236 3237 /* HW supports tc offload but mutually exclusive with n-tuple filters */ 3238 if (pf->flags & OTX2_FLAG_TC_FLOWER_SUPPORT) 3239 netdev->hw_features |= NETIF_F_HW_TC; 3240 3241 netdev->hw_features |= NETIF_F_LOOPBACK | NETIF_F_RXALL; 3242 3243 netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS); 3244 netdev->watchdog_timeo = OTX2_TX_TIMEOUT; 3245 3246 netdev->netdev_ops = &otx2_netdev_ops; 3247 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 3248 NETDEV_XDP_ACT_NDO_XMIT | 3249 NETDEV_XDP_ACT_XSK_ZEROCOPY; 3250 3251 netdev->min_mtu = OTX2_MIN_MTU; 3252 netdev->max_mtu = otx2_get_max_mtu(pf); 3253 hw->max_mtu = netdev->max_mtu; 3254 3255 /* reset CGX/RPM MAC stats */ 3256 otx2_reset_mac_stats(pf); 3257 3258 err = cn10k_ipsec_init(netdev); 3259 if (err) 3260 goto err_mcs_free; 3261 3262 err = register_netdev(netdev); 3263 if (err) { 3264 dev_err(dev, "Failed to register netdevice\n"); 3265 goto err_ipsec_clean; 3266 } 3267 3268 err = otx2_wq_init(pf); 3269 if (err) 3270 goto err_unreg_netdev; 3271 3272 otx2_set_ethtool_ops(netdev); 3273 3274 err = otx2_init_tc(pf); 3275 if (err) 3276 goto err_mcam_flow_del; 3277 3278 err = otx2_register_dl(pf); 3279 if (err) 3280 goto err_mcam_flow_del; 3281 3282 /* Initialize SR-IOV resources */ 3283 err = otx2_sriov_vfcfg_init(pf); 3284 if (err) 3285 goto err_pf_sriov_init; 3286 3287 /* Enable link notifications */ 3288 otx2_cgx_config_linkevents(pf, true); 3289 3290 pf->af_xdp_zc_qidx = bitmap_zalloc(qcount, GFP_KERNEL); 3291 if (!pf->af_xdp_zc_qidx) { 3292 err = -ENOMEM; 3293 goto err_sriov_cleannup; 3294 } 3295 3296 #ifdef CONFIG_DCB 3297 err = otx2_dcbnl_set_ops(netdev); 3298 if (err) 3299 goto err_free_zc_bmap; 3300 #endif 3301 3302 otx2_qos_init(pf, qos_txqs); 3303 3304 return 0; 3305 3306 #ifdef CONFIG_DCB 3307 err_free_zc_bmap: 3308 bitmap_free(pf->af_xdp_zc_qidx); 3309 #endif 3310 err_sriov_cleannup: 3311 otx2_sriov_vfcfg_cleanup(pf); 3312 err_pf_sriov_init: 3313 otx2_unregister_dl(pf); 3314 otx2_shutdown_tc(pf); 3315 err_mcam_flow_del: 3316 otx2_mcam_flow_del(pf); 3317 err_unreg_netdev: 3318 unregister_netdev(netdev); 3319 err_ipsec_clean: 3320 cn10k_ipsec_clean(pf); 3321 err_mcs_free: 3322 cn10k_mcs_free(pf); 3323 err_del_mcam_entries: 3324 otx2_mcam_flow_del(pf); 3325 err_ptp_destroy: 3326 otx2_ptp_destroy(pf); 3327 err_detach_rsrc: 3328 if (pf->hw.lmt_info) 3329 free_percpu(pf->hw.lmt_info); 3330 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3331 qmem_free(pf->dev, pf->dync_lmt); 3332 otx2_detach_resources(&pf->mbox); 3333 otx2_disable_mbox_intr(pf); 3334 otx2_pfaf_mbox_destroy(pf); 3335 pci_free_irq_vectors(hw->pdev); 3336 err_free_netdev: 3337 pci_set_drvdata(pdev, NULL); 3338 free_netdev(netdev); 3339 return err; 3340 } 3341 3342 static void otx2_vf_link_event_task(struct work_struct *work) 3343 { 3344 struct otx2_vf_config *config; 3345 struct cgx_link_info_msg *req; 3346 struct mbox_msghdr *msghdr; 3347 struct delayed_work *dwork; 3348 struct otx2_nic *pf; 3349 int vf_idx; 3350 3351 config = container_of(work, struct otx2_vf_config, 3352 link_event_work.work); 3353 vf_idx = config - config->pf->vf_configs; 3354 pf = config->pf; 3355 3356 if (config->intf_down) 3357 return; 3358 3359 mutex_lock(&pf->mbox.lock); 3360 3361 dwork = &config->link_event_work; 3362 3363 if (!otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx)) { 3364 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 3365 mutex_unlock(&pf->mbox.lock); 3366 return; 3367 } 3368 3369 msghdr = otx2_mbox_alloc_msg_rsp(&pf->mbox_pfvf[0].mbox_up, vf_idx, 3370 sizeof(*req), sizeof(struct msg_rsp)); 3371 if (!msghdr) { 3372 dev_err(pf->dev, "Failed to create VF%d link event\n", vf_idx); 3373 mutex_unlock(&pf->mbox.lock); 3374 return; 3375 } 3376 3377 req = (struct cgx_link_info_msg *)msghdr; 3378 req->hdr.id = MBOX_MSG_CGX_LINK_EVENT; 3379 req->hdr.sig = OTX2_MBOX_REQ_SIG; 3380 req->hdr.pcifunc = pf->pcifunc; 3381 memcpy(&req->link_info, &pf->linfo, sizeof(req->link_info)); 3382 3383 otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx); 3384 3385 otx2_sync_mbox_up_msg(&pf->mbox_pfvf[0], vf_idx); 3386 3387 mutex_unlock(&pf->mbox.lock); 3388 } 3389 3390 static int otx2_sriov_enable(struct pci_dev *pdev, int numvfs) 3391 { 3392 struct net_device *netdev = pci_get_drvdata(pdev); 3393 struct otx2_nic *pf = netdev_priv(netdev); 3394 int ret; 3395 3396 /* Init PF <=> VF mailbox stuff */ 3397 ret = otx2_pfvf_mbox_init(pf, numvfs); 3398 if (ret) 3399 return ret; 3400 3401 ret = otx2_register_pfvf_mbox_intr(pf, numvfs); 3402 if (ret) 3403 goto free_mbox; 3404 3405 ret = otx2_pf_flr_init(pf, numvfs); 3406 if (ret) 3407 goto free_intr; 3408 3409 ret = otx2_register_flr_me_intr(pf, numvfs); 3410 if (ret) 3411 goto free_flr; 3412 3413 ret = pci_enable_sriov(pdev, numvfs); 3414 if (ret) 3415 goto free_flr_intr; 3416 3417 return numvfs; 3418 free_flr_intr: 3419 otx2_disable_flr_me_intr(pf); 3420 free_flr: 3421 otx2_flr_wq_destroy(pf); 3422 free_intr: 3423 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3424 free_mbox: 3425 otx2_pfvf_mbox_destroy(pf); 3426 return ret; 3427 } 3428 3429 static int otx2_sriov_disable(struct pci_dev *pdev) 3430 { 3431 struct net_device *netdev = pci_get_drvdata(pdev); 3432 struct otx2_nic *pf = netdev_priv(netdev); 3433 int numvfs = pci_num_vf(pdev); 3434 3435 if (!numvfs) 3436 return 0; 3437 3438 pci_disable_sriov(pdev); 3439 3440 otx2_disable_flr_me_intr(pf); 3441 otx2_flr_wq_destroy(pf); 3442 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3443 otx2_pfvf_mbox_destroy(pf); 3444 3445 return 0; 3446 } 3447 3448 static int otx2_sriov_configure(struct pci_dev *pdev, int numvfs) 3449 { 3450 if (numvfs == 0) 3451 return otx2_sriov_disable(pdev); 3452 else 3453 return otx2_sriov_enable(pdev, numvfs); 3454 } 3455 3456 static void otx2_ndc_sync(struct otx2_nic *pf) 3457 { 3458 struct mbox *mbox = &pf->mbox; 3459 struct ndc_sync_op *req; 3460 3461 mutex_lock(&mbox->lock); 3462 3463 req = otx2_mbox_alloc_msg_ndc_sync_op(mbox); 3464 if (!req) { 3465 mutex_unlock(&mbox->lock); 3466 return; 3467 } 3468 3469 req->nix_lf_tx_sync = 1; 3470 req->nix_lf_rx_sync = 1; 3471 req->npa_lf_sync = 1; 3472 3473 if (otx2_sync_mbox_msg(mbox)) 3474 dev_err(pf->dev, "NDC sync operation failed\n"); 3475 3476 mutex_unlock(&mbox->lock); 3477 } 3478 3479 static void otx2_remove(struct pci_dev *pdev) 3480 { 3481 struct net_device *netdev = pci_get_drvdata(pdev); 3482 struct otx2_nic *pf; 3483 3484 if (!netdev) 3485 return; 3486 3487 pf = netdev_priv(netdev); 3488 3489 pf->flags |= OTX2_FLAG_PF_SHUTDOWN; 3490 3491 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) 3492 otx2_config_hw_tx_tstamp(pf, false); 3493 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) 3494 otx2_config_hw_rx_tstamp(pf, false); 3495 3496 /* Disable 802.3x pause frames */ 3497 if (pf->flags & OTX2_FLAG_RX_PAUSE_ENABLED || 3498 (pf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) { 3499 pf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED; 3500 pf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED; 3501 otx2_config_pause_frm(pf); 3502 } 3503 3504 #ifdef CONFIG_DCB 3505 /* Disable PFC config */ 3506 if (pf->pfc_en) { 3507 pf->pfc_en = 0; 3508 otx2_config_priority_flow_ctrl(pf); 3509 } 3510 #endif 3511 cancel_work_sync(&pf->reset_task); 3512 /* Disable link notifications */ 3513 otx2_cgx_config_linkevents(pf, false); 3514 3515 otx2_unregister_dl(pf); 3516 unregister_netdev(netdev); 3517 cn10k_ipsec_clean(pf); 3518 cn10k_mcs_free(pf); 3519 otx2_sriov_disable(pf->pdev); 3520 otx2_sriov_vfcfg_cleanup(pf); 3521 if (pf->otx2_wq) 3522 destroy_workqueue(pf->otx2_wq); 3523 3524 otx2_ptp_destroy(pf); 3525 otx2_mcam_flow_del(pf); 3526 otx2_shutdown_tc(pf); 3527 otx2_shutdown_qos(pf); 3528 otx2_ndc_sync(pf); 3529 otx2_detach_resources(&pf->mbox); 3530 if (pf->hw.lmt_info) 3531 free_percpu(pf->hw.lmt_info); 3532 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3533 qmem_free(pf->dev, pf->dync_lmt); 3534 otx2_disable_mbox_intr(pf); 3535 otx2_pfaf_mbox_destroy(pf); 3536 pci_free_irq_vectors(pf->pdev); 3537 bitmap_free(pf->af_xdp_zc_qidx); 3538 pci_set_drvdata(pdev, NULL); 3539 free_netdev(netdev); 3540 } 3541 3542 static struct pci_driver otx2_pf_driver = { 3543 .name = DRV_NAME, 3544 .id_table = otx2_pf_id_table, 3545 .probe = otx2_probe, 3546 .shutdown = otx2_remove, 3547 .remove = otx2_remove, 3548 .sriov_configure = otx2_sriov_configure 3549 }; 3550 3551 static int __init otx2_rvupf_init_module(void) 3552 { 3553 pr_info("%s: %s\n", DRV_NAME, DRV_STRING); 3554 3555 return pci_register_driver(&otx2_pf_driver); 3556 } 3557 3558 static void __exit otx2_rvupf_cleanup_module(void) 3559 { 3560 pci_unregister_driver(&otx2_pf_driver); 3561 } 3562 3563 module_init(otx2_rvupf_init_module); 3564 module_exit(otx2_rvupf_cleanup_module); 3565