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 30 #define DRV_NAME "rvu_nicpf" 31 #define DRV_STRING "Marvell RVU NIC Physical Function Driver" 32 33 /* Supported devices */ 34 static const struct pci_device_id otx2_pf_id_table[] = { 35 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_PF) }, 36 { 0, } /* end of table */ 37 }; 38 39 MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>"); 40 MODULE_DESCRIPTION(DRV_STRING); 41 MODULE_LICENSE("GPL v2"); 42 MODULE_DEVICE_TABLE(pci, otx2_pf_id_table); 43 44 static void otx2_vf_link_event_task(struct work_struct *work); 45 46 enum { 47 TYPE_PFAF, 48 TYPE_PFVF, 49 }; 50 51 static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable); 52 static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable); 53 54 static int otx2_change_mtu(struct net_device *netdev, int new_mtu) 55 { 56 struct otx2_nic *pf = netdev_priv(netdev); 57 bool if_up = netif_running(netdev); 58 int err = 0; 59 60 if (pf->xdp_prog && new_mtu > MAX_XDP_MTU) { 61 netdev_warn(netdev, "Jumbo frames not yet supported with XDP, current MTU %d.\n", 62 netdev->mtu); 63 return -EINVAL; 64 } 65 if (if_up) 66 otx2_stop(netdev); 67 68 netdev_info(netdev, "Changing MTU from %d to %d\n", 69 netdev->mtu, new_mtu); 70 netdev->mtu = new_mtu; 71 72 if (if_up) 73 err = otx2_open(netdev); 74 75 return err; 76 } 77 78 static void otx2_disable_flr_me_intr(struct otx2_nic *pf) 79 { 80 int irq, vfs = pf->total_vfs; 81 82 /* Disable VFs ME interrupts */ 83 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(0), INTR_MASK(vfs)); 84 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0); 85 free_irq(irq, pf); 86 87 /* Disable VFs FLR interrupts */ 88 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(0), INTR_MASK(vfs)); 89 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0); 90 free_irq(irq, pf); 91 92 if (vfs <= 64) 93 return; 94 95 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(1), INTR_MASK(vfs - 64)); 96 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME1); 97 free_irq(irq, pf); 98 99 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(1), INTR_MASK(vfs - 64)); 100 irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR1); 101 free_irq(irq, pf); 102 } 103 104 static void otx2_flr_wq_destroy(struct otx2_nic *pf) 105 { 106 if (!pf->flr_wq) 107 return; 108 destroy_workqueue(pf->flr_wq); 109 pf->flr_wq = NULL; 110 devm_kfree(pf->dev, pf->flr_wrk); 111 } 112 113 static void otx2_flr_handler(struct work_struct *work) 114 { 115 struct flr_work *flrwork = container_of(work, struct flr_work, work); 116 struct otx2_nic *pf = flrwork->pf; 117 struct mbox *mbox = &pf->mbox; 118 struct msg_req *req; 119 int vf, reg = 0; 120 121 vf = flrwork - pf->flr_wrk; 122 123 mutex_lock(&mbox->lock); 124 req = otx2_mbox_alloc_msg_vf_flr(mbox); 125 if (!req) { 126 mutex_unlock(&mbox->lock); 127 return; 128 } 129 req->hdr.pcifunc &= RVU_PFVF_FUNC_MASK; 130 req->hdr.pcifunc |= (vf + 1) & RVU_PFVF_FUNC_MASK; 131 132 if (!otx2_sync_mbox_msg(&pf->mbox)) { 133 if (vf >= 64) { 134 reg = 1; 135 vf = vf - 64; 136 } 137 /* clear transcation pending bit */ 138 otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf)); 139 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(reg), BIT_ULL(vf)); 140 } 141 142 mutex_unlock(&mbox->lock); 143 } 144 145 static irqreturn_t otx2_pf_flr_intr_handler(int irq, void *pf_irq) 146 { 147 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 148 int reg, dev, vf, start_vf, num_reg = 1; 149 u64 intr; 150 151 if (pf->total_vfs > 64) 152 num_reg = 2; 153 154 for (reg = 0; reg < num_reg; reg++) { 155 intr = otx2_read64(pf, RVU_PF_VFFLR_INTX(reg)); 156 if (!intr) 157 continue; 158 start_vf = 64 * reg; 159 for (vf = 0; vf < 64; vf++) { 160 if (!(intr & BIT_ULL(vf))) 161 continue; 162 dev = vf + start_vf; 163 queue_work(pf->flr_wq, &pf->flr_wrk[dev].work); 164 /* Clear interrupt */ 165 otx2_write64(pf, RVU_PF_VFFLR_INTX(reg), BIT_ULL(vf)); 166 /* Disable the interrupt */ 167 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(reg), 168 BIT_ULL(vf)); 169 } 170 } 171 return IRQ_HANDLED; 172 } 173 174 static irqreturn_t otx2_pf_me_intr_handler(int irq, void *pf_irq) 175 { 176 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 177 int vf, reg, num_reg = 1; 178 u64 intr; 179 180 if (pf->total_vfs > 64) 181 num_reg = 2; 182 183 for (reg = 0; reg < num_reg; reg++) { 184 intr = otx2_read64(pf, RVU_PF_VFME_INTX(reg)); 185 if (!intr) 186 continue; 187 for (vf = 0; vf < 64; vf++) { 188 if (!(intr & BIT_ULL(vf))) 189 continue; 190 /* clear trpend bit */ 191 otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf)); 192 /* clear interrupt */ 193 otx2_write64(pf, RVU_PF_VFME_INTX(reg), BIT_ULL(vf)); 194 } 195 } 196 return IRQ_HANDLED; 197 } 198 199 static int otx2_register_flr_me_intr(struct otx2_nic *pf, int numvfs) 200 { 201 struct otx2_hw *hw = &pf->hw; 202 char *irq_name; 203 int ret; 204 205 /* Register ME interrupt handler*/ 206 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME0 * NAME_SIZE]; 207 snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME0", rvu_get_pf(pf->pcifunc)); 208 ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0), 209 otx2_pf_me_intr_handler, 0, irq_name, pf); 210 if (ret) { 211 dev_err(pf->dev, 212 "RVUPF: IRQ registration failed for ME0\n"); 213 } 214 215 /* Register FLR interrupt handler */ 216 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR0 * NAME_SIZE]; 217 snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR0", rvu_get_pf(pf->pcifunc)); 218 ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0), 219 otx2_pf_flr_intr_handler, 0, irq_name, pf); 220 if (ret) { 221 dev_err(pf->dev, 222 "RVUPF: IRQ registration failed for FLR0\n"); 223 return ret; 224 } 225 226 if (numvfs > 64) { 227 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME1 * NAME_SIZE]; 228 snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME1", 229 rvu_get_pf(pf->pcifunc)); 230 ret = request_irq(pci_irq_vector 231 (pf->pdev, RVU_PF_INT_VEC_VFME1), 232 otx2_pf_me_intr_handler, 0, irq_name, pf); 233 if (ret) { 234 dev_err(pf->dev, 235 "RVUPF: IRQ registration failed for ME1\n"); 236 } 237 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR1 * NAME_SIZE]; 238 snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR1", 239 rvu_get_pf(pf->pcifunc)); 240 ret = request_irq(pci_irq_vector 241 (pf->pdev, RVU_PF_INT_VEC_VFFLR1), 242 otx2_pf_flr_intr_handler, 0, irq_name, pf); 243 if (ret) { 244 dev_err(pf->dev, 245 "RVUPF: IRQ registration failed for FLR1\n"); 246 return ret; 247 } 248 } 249 250 /* Enable ME interrupt for all VFs*/ 251 otx2_write64(pf, RVU_PF_VFME_INTX(0), INTR_MASK(numvfs)); 252 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 253 254 /* Enable FLR interrupt for all VFs*/ 255 otx2_write64(pf, RVU_PF_VFFLR_INTX(0), INTR_MASK(numvfs)); 256 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 257 258 if (numvfs > 64) { 259 numvfs -= 64; 260 261 otx2_write64(pf, RVU_PF_VFME_INTX(1), INTR_MASK(numvfs)); 262 otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(1), 263 INTR_MASK(numvfs)); 264 265 otx2_write64(pf, RVU_PF_VFFLR_INTX(1), INTR_MASK(numvfs)); 266 otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(1), 267 INTR_MASK(numvfs)); 268 } 269 return 0; 270 } 271 272 static int otx2_pf_flr_init(struct otx2_nic *pf, int num_vfs) 273 { 274 int vf; 275 276 pf->flr_wq = alloc_ordered_workqueue("otx2_pf_flr_wq", WQ_HIGHPRI); 277 if (!pf->flr_wq) 278 return -ENOMEM; 279 280 pf->flr_wrk = devm_kcalloc(pf->dev, num_vfs, 281 sizeof(struct flr_work), GFP_KERNEL); 282 if (!pf->flr_wrk) { 283 destroy_workqueue(pf->flr_wq); 284 return -ENOMEM; 285 } 286 287 for (vf = 0; vf < num_vfs; vf++) { 288 pf->flr_wrk[vf].pf = pf; 289 INIT_WORK(&pf->flr_wrk[vf].work, otx2_flr_handler); 290 } 291 292 return 0; 293 } 294 295 static void otx2_queue_vf_work(struct mbox *mw, struct workqueue_struct *mbox_wq, 296 int first, int mdevs, u64 intr) 297 { 298 struct otx2_mbox_dev *mdev; 299 struct otx2_mbox *mbox; 300 struct mbox_hdr *hdr; 301 int i; 302 303 for (i = first; i < mdevs; i++) { 304 /* start from 0 */ 305 if (!(intr & BIT_ULL(i - first))) 306 continue; 307 308 mbox = &mw->mbox; 309 mdev = &mbox->dev[i]; 310 hdr = mdev->mbase + mbox->rx_start; 311 /* The hdr->num_msgs is set to zero immediately in the interrupt 312 * handler to ensure that it holds a correct value next time 313 * when the interrupt handler is called. pf->mw[i].num_msgs 314 * holds the data for use in otx2_pfvf_mbox_handler and 315 * pf->mw[i].up_num_msgs holds the data for use in 316 * otx2_pfvf_mbox_up_handler. 317 */ 318 if (hdr->num_msgs) { 319 mw[i].num_msgs = hdr->num_msgs; 320 hdr->num_msgs = 0; 321 queue_work(mbox_wq, &mw[i].mbox_wrk); 322 } 323 324 mbox = &mw->mbox_up; 325 mdev = &mbox->dev[i]; 326 hdr = mdev->mbase + mbox->rx_start; 327 if (hdr->num_msgs) { 328 mw[i].up_num_msgs = hdr->num_msgs; 329 hdr->num_msgs = 0; 330 queue_work(mbox_wq, &mw[i].mbox_up_wrk); 331 } 332 } 333 } 334 335 static void otx2_forward_msg_pfvf(struct otx2_mbox_dev *mdev, 336 struct otx2_mbox *pfvf_mbox, void *bbuf_base, 337 int devid) 338 { 339 struct otx2_mbox_dev *src_mdev = mdev; 340 int offset; 341 342 /* Msgs are already copied, trigger VF's mbox irq */ 343 smp_wmb(); 344 345 otx2_mbox_wait_for_zero(pfvf_mbox, devid); 346 347 offset = pfvf_mbox->trigger | (devid << pfvf_mbox->tr_shift); 348 writeq(MBOX_DOWN_MSG, (void __iomem *)pfvf_mbox->reg_base + offset); 349 350 /* Restore VF's mbox bounce buffer region address */ 351 src_mdev->mbase = bbuf_base; 352 } 353 354 static int otx2_forward_vf_mbox_msgs(struct otx2_nic *pf, 355 struct otx2_mbox *src_mbox, 356 int dir, int vf, int num_msgs) 357 { 358 struct otx2_mbox_dev *src_mdev, *dst_mdev; 359 struct mbox_hdr *mbox_hdr; 360 struct mbox_hdr *req_hdr; 361 struct mbox *dst_mbox; 362 int dst_size, err; 363 364 if (dir == MBOX_DIR_PFAF) { 365 /* Set VF's mailbox memory as PF's bounce buffer memory, so 366 * that explicit copying of VF's msgs to PF=>AF mbox region 367 * and AF=>PF responses to VF's mbox region can be avoided. 368 */ 369 src_mdev = &src_mbox->dev[vf]; 370 mbox_hdr = src_mbox->hwbase + 371 src_mbox->rx_start + (vf * MBOX_SIZE); 372 373 dst_mbox = &pf->mbox; 374 dst_size = dst_mbox->mbox.tx_size - 375 ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN); 376 /* Check if msgs fit into destination area and has valid size */ 377 if (mbox_hdr->msg_size > dst_size || !mbox_hdr->msg_size) 378 return -EINVAL; 379 380 dst_mdev = &dst_mbox->mbox.dev[0]; 381 382 mutex_lock(&pf->mbox.lock); 383 dst_mdev->mbase = src_mdev->mbase; 384 dst_mdev->msg_size = mbox_hdr->msg_size; 385 dst_mdev->num_msgs = num_msgs; 386 err = otx2_sync_mbox_msg(dst_mbox); 387 /* Error code -EIO indicate there is a communication failure 388 * to the AF. Rest of the error codes indicate that AF processed 389 * VF messages and set the error codes in response messages 390 * (if any) so simply forward responses to VF. 391 */ 392 if (err == -EIO) { 393 dev_warn(pf->dev, 394 "AF not responding to VF%d messages\n", vf); 395 /* restore PF mbase and exit */ 396 dst_mdev->mbase = pf->mbox.bbuf_base; 397 mutex_unlock(&pf->mbox.lock); 398 return err; 399 } 400 /* At this point, all the VF messages sent to AF are acked 401 * with proper responses and responses are copied to VF 402 * mailbox hence raise interrupt to VF. 403 */ 404 req_hdr = (struct mbox_hdr *)(dst_mdev->mbase + 405 dst_mbox->mbox.rx_start); 406 req_hdr->num_msgs = num_msgs; 407 408 otx2_forward_msg_pfvf(dst_mdev, &pf->mbox_pfvf[0].mbox, 409 pf->mbox.bbuf_base, vf); 410 mutex_unlock(&pf->mbox.lock); 411 } else if (dir == MBOX_DIR_PFVF_UP) { 412 src_mdev = &src_mbox->dev[0]; 413 mbox_hdr = src_mbox->hwbase + src_mbox->rx_start; 414 req_hdr = (struct mbox_hdr *)(src_mdev->mbase + 415 src_mbox->rx_start); 416 req_hdr->num_msgs = num_msgs; 417 418 dst_mbox = &pf->mbox_pfvf[0]; 419 dst_size = dst_mbox->mbox_up.tx_size - 420 ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN); 421 /* Check if msgs fit into destination area */ 422 if (mbox_hdr->msg_size > dst_size) 423 return -EINVAL; 424 425 dst_mdev = &dst_mbox->mbox_up.dev[vf]; 426 dst_mdev->mbase = src_mdev->mbase; 427 dst_mdev->msg_size = mbox_hdr->msg_size; 428 dst_mdev->num_msgs = mbox_hdr->num_msgs; 429 err = otx2_sync_mbox_up_msg(dst_mbox, vf); 430 if (err) { 431 dev_warn(pf->dev, 432 "VF%d is not responding to mailbox\n", vf); 433 return err; 434 } 435 } else if (dir == MBOX_DIR_VFPF_UP) { 436 req_hdr = (struct mbox_hdr *)(src_mbox->dev[0].mbase + 437 src_mbox->rx_start); 438 req_hdr->num_msgs = num_msgs; 439 otx2_forward_msg_pfvf(&pf->mbox_pfvf->mbox_up.dev[vf], 440 &pf->mbox.mbox_up, 441 pf->mbox_pfvf[vf].bbuf_base, 442 0); 443 } 444 445 return 0; 446 } 447 448 static void otx2_pfvf_mbox_handler(struct work_struct *work) 449 { 450 struct mbox_msghdr *msg = NULL; 451 int offset, vf_idx, id, err; 452 struct otx2_mbox_dev *mdev; 453 struct otx2_mbox *mbox; 454 struct mbox *vf_mbox; 455 struct otx2_nic *pf; 456 457 vf_mbox = container_of(work, struct mbox, mbox_wrk); 458 pf = vf_mbox->pfvf; 459 vf_idx = vf_mbox - pf->mbox_pfvf; 460 461 mbox = &pf->mbox_pfvf[0].mbox; 462 mdev = &mbox->dev[vf_idx]; 463 464 offset = ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN); 465 466 for (id = 0; id < vf_mbox->num_msgs; id++) { 467 msg = (struct mbox_msghdr *)(mdev->mbase + mbox->rx_start + 468 offset); 469 470 if (msg->sig != OTX2_MBOX_REQ_SIG) 471 goto inval_msg; 472 473 /* Set VF's number in each of the msg */ 474 msg->pcifunc &= RVU_PFVF_FUNC_MASK; 475 msg->pcifunc |= (vf_idx + 1) & RVU_PFVF_FUNC_MASK; 476 offset = msg->next_msgoff; 477 } 478 err = otx2_forward_vf_mbox_msgs(pf, mbox, MBOX_DIR_PFAF, vf_idx, 479 vf_mbox->num_msgs); 480 if (err) 481 goto inval_msg; 482 return; 483 484 inval_msg: 485 otx2_reply_invalid_msg(mbox, vf_idx, 0, msg->id); 486 otx2_mbox_msg_send(mbox, vf_idx); 487 } 488 489 static void otx2_pfvf_mbox_up_handler(struct work_struct *work) 490 { 491 struct mbox *vf_mbox = container_of(work, struct mbox, mbox_up_wrk); 492 struct otx2_nic *pf = vf_mbox->pfvf; 493 struct otx2_mbox_dev *mdev; 494 int offset, id, vf_idx = 0; 495 struct mbox_msghdr *msg; 496 struct otx2_mbox *mbox; 497 498 vf_idx = vf_mbox - pf->mbox_pfvf; 499 mbox = &pf->mbox_pfvf[0].mbox_up; 500 mdev = &mbox->dev[vf_idx]; 501 502 offset = mbox->rx_start + ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN); 503 504 for (id = 0; id < vf_mbox->up_num_msgs; id++) { 505 msg = mdev->mbase + offset; 506 507 if (msg->id >= MBOX_MSG_MAX) { 508 dev_err(pf->dev, 509 "Mbox msg with unknown ID 0x%x\n", msg->id); 510 goto end; 511 } 512 513 if (msg->sig != OTX2_MBOX_RSP_SIG) { 514 dev_err(pf->dev, 515 "Mbox msg with wrong signature %x, ID 0x%x\n", 516 msg->sig, msg->id); 517 goto end; 518 } 519 520 switch (msg->id) { 521 case MBOX_MSG_CGX_LINK_EVENT: 522 break; 523 default: 524 if (msg->rc) 525 dev_err(pf->dev, 526 "Mbox msg response has err %d, ID 0x%x\n", 527 msg->rc, msg->id); 528 break; 529 } 530 531 end: 532 offset = mbox->rx_start + msg->next_msgoff; 533 if (mdev->msgs_acked == (vf_mbox->up_num_msgs - 1)) 534 __otx2_mbox_reset(mbox, vf_idx); 535 mdev->msgs_acked++; 536 } 537 } 538 539 static irqreturn_t otx2_pfvf_mbox_intr_handler(int irq, void *pf_irq) 540 { 541 struct otx2_nic *pf = (struct otx2_nic *)(pf_irq); 542 int vfs = pf->total_vfs; 543 struct mbox *mbox; 544 u64 intr; 545 546 mbox = pf->mbox_pfvf; 547 /* Handle VF interrupts */ 548 if (vfs > 64) { 549 intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(1)); 550 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), intr); 551 otx2_queue_vf_work(mbox, pf->mbox_pfvf_wq, 64, vfs, intr); 552 if (intr) 553 trace_otx2_msg_interrupt(mbox->mbox.pdev, "VF(s) to PF", intr); 554 vfs = 64; 555 } 556 557 intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(0)); 558 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), intr); 559 560 otx2_queue_vf_work(mbox, pf->mbox_pfvf_wq, 0, vfs, intr); 561 562 if (intr) 563 trace_otx2_msg_interrupt(mbox->mbox.pdev, "VF(s) to PF", intr); 564 565 return IRQ_HANDLED; 566 } 567 568 static int otx2_pfvf_mbox_init(struct otx2_nic *pf, int numvfs) 569 { 570 void __iomem *hwbase; 571 struct mbox *mbox; 572 int err, vf; 573 u64 base; 574 575 if (!numvfs) 576 return -EINVAL; 577 578 pf->mbox_pfvf = devm_kcalloc(&pf->pdev->dev, numvfs, 579 sizeof(struct mbox), GFP_KERNEL); 580 if (!pf->mbox_pfvf) 581 return -ENOMEM; 582 583 pf->mbox_pfvf_wq = alloc_workqueue("otx2_pfvf_mailbox", 584 WQ_UNBOUND | WQ_HIGHPRI | 585 WQ_MEM_RECLAIM, 0); 586 if (!pf->mbox_pfvf_wq) 587 return -ENOMEM; 588 589 /* On CN10K platform, PF <-> VF mailbox region follows after 590 * PF <-> AF mailbox region. 591 */ 592 if (test_bit(CN10K_MBOX, &pf->hw.cap_flag)) 593 base = pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM) + 594 MBOX_SIZE; 595 else 596 base = readq((void __iomem *)((u64)pf->reg_base + 597 RVU_PF_VF_BAR4_ADDR)); 598 599 hwbase = ioremap_wc(base, MBOX_SIZE * pf->total_vfs); 600 if (!hwbase) { 601 err = -ENOMEM; 602 goto free_wq; 603 } 604 605 mbox = &pf->mbox_pfvf[0]; 606 err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base, 607 MBOX_DIR_PFVF, numvfs); 608 if (err) 609 goto free_iomem; 610 611 err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base, 612 MBOX_DIR_PFVF_UP, numvfs); 613 if (err) 614 goto free_iomem; 615 616 for (vf = 0; vf < numvfs; vf++) { 617 mbox->pfvf = pf; 618 INIT_WORK(&mbox->mbox_wrk, otx2_pfvf_mbox_handler); 619 INIT_WORK(&mbox->mbox_up_wrk, otx2_pfvf_mbox_up_handler); 620 mbox++; 621 } 622 623 return 0; 624 625 free_iomem: 626 if (hwbase) 627 iounmap(hwbase); 628 free_wq: 629 destroy_workqueue(pf->mbox_pfvf_wq); 630 return err; 631 } 632 633 static void otx2_pfvf_mbox_destroy(struct otx2_nic *pf) 634 { 635 struct mbox *mbox = &pf->mbox_pfvf[0]; 636 637 if (!mbox) 638 return; 639 640 if (pf->mbox_pfvf_wq) { 641 destroy_workqueue(pf->mbox_pfvf_wq); 642 pf->mbox_pfvf_wq = NULL; 643 } 644 645 if (mbox->mbox.hwbase) 646 iounmap(mbox->mbox.hwbase); 647 648 otx2_mbox_destroy(&mbox->mbox); 649 } 650 651 static void otx2_enable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 652 { 653 /* Clear PF <=> VF mailbox IRQ */ 654 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull); 655 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull); 656 657 /* Enable PF <=> VF mailbox IRQ */ 658 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(0), INTR_MASK(numvfs)); 659 if (numvfs > 64) { 660 numvfs -= 64; 661 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(1), 662 INTR_MASK(numvfs)); 663 } 664 } 665 666 static void otx2_disable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 667 { 668 int vector; 669 670 /* Disable PF <=> VF mailbox IRQ */ 671 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(0), ~0ull); 672 otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(1), ~0ull); 673 674 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull); 675 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0); 676 free_irq(vector, pf); 677 678 if (numvfs > 64) { 679 otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull); 680 vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX1); 681 free_irq(vector, pf); 682 } 683 } 684 685 static int otx2_register_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs) 686 { 687 struct otx2_hw *hw = &pf->hw; 688 char *irq_name; 689 int err; 690 691 /* Register MBOX0 interrupt handler */ 692 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX0 * NAME_SIZE]; 693 if (pf->pcifunc) 694 snprintf(irq_name, NAME_SIZE, 695 "RVUPF%d_VF Mbox0", rvu_get_pf(pf->pcifunc)); 696 else 697 snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox0"); 698 err = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0), 699 otx2_pfvf_mbox_intr_handler, 0, irq_name, pf); 700 if (err) { 701 dev_err(pf->dev, 702 "RVUPF: IRQ registration failed for PFVF mbox0 irq\n"); 703 return err; 704 } 705 706 if (numvfs > 64) { 707 /* Register MBOX1 interrupt handler */ 708 irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX1 * NAME_SIZE]; 709 if (pf->pcifunc) 710 snprintf(irq_name, NAME_SIZE, 711 "RVUPF%d_VF Mbox1", rvu_get_pf(pf->pcifunc)); 712 else 713 snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox1"); 714 err = request_irq(pci_irq_vector(pf->pdev, 715 RVU_PF_INT_VEC_VFPF_MBOX1), 716 otx2_pfvf_mbox_intr_handler, 717 0, irq_name, pf); 718 if (err) { 719 dev_err(pf->dev, 720 "RVUPF: IRQ registration failed for PFVF mbox1 irq\n"); 721 return err; 722 } 723 } 724 725 otx2_enable_pfvf_mbox_intr(pf, numvfs); 726 727 return 0; 728 } 729 730 static void otx2_process_pfaf_mbox_msg(struct otx2_nic *pf, 731 struct mbox_msghdr *msg) 732 { 733 int devid; 734 735 if (msg->id >= MBOX_MSG_MAX) { 736 dev_err(pf->dev, 737 "Mbox msg with unknown ID 0x%x\n", msg->id); 738 return; 739 } 740 741 if (msg->sig != OTX2_MBOX_RSP_SIG) { 742 dev_err(pf->dev, 743 "Mbox msg with wrong signature %x, ID 0x%x\n", 744 msg->sig, msg->id); 745 return; 746 } 747 748 /* message response heading VF */ 749 devid = msg->pcifunc & RVU_PFVF_FUNC_MASK; 750 if (devid) { 751 struct otx2_vf_config *config = &pf->vf_configs[devid - 1]; 752 struct delayed_work *dwork; 753 754 switch (msg->id) { 755 case MBOX_MSG_NIX_LF_START_RX: 756 config->intf_down = false; 757 dwork = &config->link_event_work; 758 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 759 break; 760 case MBOX_MSG_NIX_LF_STOP_RX: 761 config->intf_down = true; 762 break; 763 } 764 765 return; 766 } 767 768 switch (msg->id) { 769 case MBOX_MSG_READY: 770 pf->pcifunc = msg->pcifunc; 771 break; 772 case MBOX_MSG_MSIX_OFFSET: 773 mbox_handler_msix_offset(pf, (struct msix_offset_rsp *)msg); 774 break; 775 case MBOX_MSG_NPA_LF_ALLOC: 776 mbox_handler_npa_lf_alloc(pf, (struct npa_lf_alloc_rsp *)msg); 777 break; 778 case MBOX_MSG_NIX_LF_ALLOC: 779 mbox_handler_nix_lf_alloc(pf, (struct nix_lf_alloc_rsp *)msg); 780 break; 781 case MBOX_MSG_NIX_BP_ENABLE: 782 mbox_handler_nix_bp_enable(pf, (struct nix_bp_cfg_rsp *)msg); 783 break; 784 case MBOX_MSG_CGX_STATS: 785 mbox_handler_cgx_stats(pf, (struct cgx_stats_rsp *)msg); 786 break; 787 case MBOX_MSG_CGX_FEC_STATS: 788 mbox_handler_cgx_fec_stats(pf, (struct cgx_fec_stats_rsp *)msg); 789 break; 790 default: 791 if (msg->rc) 792 dev_err(pf->dev, 793 "Mbox msg response has err %d, ID 0x%x\n", 794 msg->rc, msg->id); 795 break; 796 } 797 } 798 799 static void otx2_pfaf_mbox_handler(struct work_struct *work) 800 { 801 struct otx2_mbox_dev *mdev; 802 struct mbox_hdr *rsp_hdr; 803 struct mbox_msghdr *msg; 804 struct otx2_mbox *mbox; 805 struct mbox *af_mbox; 806 struct otx2_nic *pf; 807 int offset, id; 808 u16 num_msgs; 809 810 af_mbox = container_of(work, struct mbox, mbox_wrk); 811 mbox = &af_mbox->mbox; 812 mdev = &mbox->dev[0]; 813 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 814 num_msgs = rsp_hdr->num_msgs; 815 816 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); 817 pf = af_mbox->pfvf; 818 819 for (id = 0; id < num_msgs; id++) { 820 msg = (struct mbox_msghdr *)(mdev->mbase + offset); 821 otx2_process_pfaf_mbox_msg(pf, msg); 822 offset = mbox->rx_start + msg->next_msgoff; 823 if (mdev->msgs_acked == (num_msgs - 1)) 824 __otx2_mbox_reset(mbox, 0); 825 mdev->msgs_acked++; 826 } 827 828 } 829 830 static void otx2_handle_link_event(struct otx2_nic *pf) 831 { 832 struct cgx_link_user_info *linfo = &pf->linfo; 833 struct net_device *netdev = pf->netdev; 834 835 pr_info("%s NIC Link is %s %d Mbps %s duplex\n", netdev->name, 836 linfo->link_up ? "UP" : "DOWN", linfo->speed, 837 linfo->full_duplex ? "Full" : "Half"); 838 if (linfo->link_up) { 839 netif_carrier_on(netdev); 840 netif_tx_start_all_queues(netdev); 841 } else { 842 netif_tx_stop_all_queues(netdev); 843 netif_carrier_off(netdev); 844 } 845 } 846 847 int otx2_mbox_up_handler_mcs_intr_notify(struct otx2_nic *pf, 848 struct mcs_intr_info *event, 849 struct msg_rsp *rsp) 850 { 851 cn10k_handle_mcs_event(pf, event); 852 853 return 0; 854 } 855 856 int otx2_mbox_up_handler_cgx_link_event(struct otx2_nic *pf, 857 struct cgx_link_info_msg *msg, 858 struct msg_rsp *rsp) 859 { 860 int i; 861 862 /* Copy the link info sent by AF */ 863 pf->linfo = msg->link_info; 864 865 /* notify VFs about link event */ 866 for (i = 0; i < pci_num_vf(pf->pdev); i++) { 867 struct otx2_vf_config *config = &pf->vf_configs[i]; 868 struct delayed_work *dwork = &config->link_event_work; 869 870 if (config->intf_down) 871 continue; 872 873 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 874 } 875 876 /* interface has not been fully configured yet */ 877 if (pf->flags & OTX2_FLAG_INTF_DOWN) 878 return 0; 879 880 otx2_handle_link_event(pf); 881 return 0; 882 } 883 884 static int otx2_process_mbox_msg_up(struct otx2_nic *pf, 885 struct mbox_msghdr *req) 886 { 887 /* Check if valid, if not reply with a invalid msg */ 888 if (req->sig != OTX2_MBOX_REQ_SIG) { 889 otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id); 890 return -ENODEV; 891 } 892 893 switch (req->id) { 894 #define M(_name, _id, _fn_name, _req_type, _rsp_type) \ 895 case _id: { \ 896 struct _rsp_type *rsp; \ 897 int err; \ 898 \ 899 rsp = (struct _rsp_type *)otx2_mbox_alloc_msg( \ 900 &pf->mbox.mbox_up, 0, \ 901 sizeof(struct _rsp_type)); \ 902 if (!rsp) \ 903 return -ENOMEM; \ 904 \ 905 rsp->hdr.id = _id; \ 906 rsp->hdr.sig = OTX2_MBOX_RSP_SIG; \ 907 rsp->hdr.pcifunc = 0; \ 908 rsp->hdr.rc = 0; \ 909 \ 910 err = otx2_mbox_up_handler_ ## _fn_name( \ 911 pf, (struct _req_type *)req, rsp); \ 912 return err; \ 913 } 914 MBOX_UP_CGX_MESSAGES 915 MBOX_UP_MCS_MESSAGES 916 #undef M 917 break; 918 default: 919 otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id); 920 return -ENODEV; 921 } 922 return 0; 923 } 924 925 static void otx2_pfaf_mbox_up_handler(struct work_struct *work) 926 { 927 struct mbox *af_mbox = container_of(work, struct mbox, mbox_up_wrk); 928 struct otx2_mbox *mbox = &af_mbox->mbox_up; 929 struct otx2_mbox_dev *mdev = &mbox->dev[0]; 930 struct otx2_nic *pf = af_mbox->pfvf; 931 int offset, id, devid = 0; 932 struct mbox_hdr *rsp_hdr; 933 struct mbox_msghdr *msg; 934 u16 num_msgs; 935 936 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 937 num_msgs = rsp_hdr->num_msgs; 938 939 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); 940 941 for (id = 0; id < num_msgs; id++) { 942 msg = (struct mbox_msghdr *)(mdev->mbase + offset); 943 944 devid = msg->pcifunc & RVU_PFVF_FUNC_MASK; 945 /* Skip processing VF's messages */ 946 if (!devid) 947 otx2_process_mbox_msg_up(pf, msg); 948 offset = mbox->rx_start + msg->next_msgoff; 949 } 950 /* Forward to VF iff VFs are really present */ 951 if (devid && pci_num_vf(pf->pdev)) { 952 otx2_forward_vf_mbox_msgs(pf, &pf->mbox.mbox_up, 953 MBOX_DIR_PFVF_UP, devid - 1, 954 num_msgs); 955 return; 956 } 957 958 otx2_mbox_msg_send(mbox, 0); 959 } 960 961 static irqreturn_t otx2_pfaf_mbox_intr_handler(int irq, void *pf_irq) 962 { 963 struct otx2_nic *pf = (struct otx2_nic *)pf_irq; 964 struct mbox *mw = &pf->mbox; 965 struct otx2_mbox_dev *mdev; 966 struct otx2_mbox *mbox; 967 struct mbox_hdr *hdr; 968 u64 mbox_data; 969 970 /* Clear the IRQ */ 971 otx2_write64(pf, RVU_PF_INT, BIT_ULL(0)); 972 973 974 mbox_data = otx2_read64(pf, RVU_PF_PFAF_MBOX0); 975 976 if (mbox_data & MBOX_UP_MSG) { 977 mbox_data &= ~MBOX_UP_MSG; 978 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 979 980 mbox = &mw->mbox_up; 981 mdev = &mbox->dev[0]; 982 otx2_sync_mbox_bbuf(mbox, 0); 983 984 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 985 if (hdr->num_msgs) 986 queue_work(pf->mbox_wq, &mw->mbox_up_wrk); 987 988 trace_otx2_msg_interrupt(pf->pdev, "UP message from AF to PF", 989 BIT_ULL(0)); 990 } 991 992 if (mbox_data & MBOX_DOWN_MSG) { 993 mbox_data &= ~MBOX_DOWN_MSG; 994 otx2_write64(pf, RVU_PF_PFAF_MBOX0, mbox_data); 995 996 mbox = &mw->mbox; 997 mdev = &mbox->dev[0]; 998 otx2_sync_mbox_bbuf(mbox, 0); 999 1000 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); 1001 if (hdr->num_msgs) 1002 queue_work(pf->mbox_wq, &mw->mbox_wrk); 1003 1004 trace_otx2_msg_interrupt(pf->pdev, "DOWN reply from AF to PF", 1005 BIT_ULL(0)); 1006 } 1007 1008 return IRQ_HANDLED; 1009 } 1010 1011 static void otx2_disable_mbox_intr(struct otx2_nic *pf) 1012 { 1013 int vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX); 1014 1015 /* Disable AF => PF mailbox IRQ */ 1016 otx2_write64(pf, RVU_PF_INT_ENA_W1C, BIT_ULL(0)); 1017 free_irq(vector, pf); 1018 } 1019 1020 static int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af) 1021 { 1022 struct otx2_hw *hw = &pf->hw; 1023 struct msg_req *req; 1024 char *irq_name; 1025 int err; 1026 1027 /* Register mailbox interrupt handler */ 1028 irq_name = &hw->irq_name[RVU_PF_INT_VEC_AFPF_MBOX * NAME_SIZE]; 1029 snprintf(irq_name, NAME_SIZE, "RVUPFAF Mbox"); 1030 err = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX), 1031 otx2_pfaf_mbox_intr_handler, 0, irq_name, pf); 1032 if (err) { 1033 dev_err(pf->dev, 1034 "RVUPF: IRQ registration failed for PFAF mbox irq\n"); 1035 return err; 1036 } 1037 1038 /* Enable mailbox interrupt for msgs coming from AF. 1039 * First clear to avoid spurious interrupts, if any. 1040 */ 1041 otx2_write64(pf, RVU_PF_INT, BIT_ULL(0)); 1042 otx2_write64(pf, RVU_PF_INT_ENA_W1S, BIT_ULL(0)); 1043 1044 if (!probe_af) 1045 return 0; 1046 1047 /* Check mailbox communication with AF */ 1048 req = otx2_mbox_alloc_msg_ready(&pf->mbox); 1049 if (!req) { 1050 otx2_disable_mbox_intr(pf); 1051 return -ENOMEM; 1052 } 1053 err = otx2_sync_mbox_msg(&pf->mbox); 1054 if (err) { 1055 dev_warn(pf->dev, 1056 "AF not responding to mailbox, deferring probe\n"); 1057 otx2_disable_mbox_intr(pf); 1058 return -EPROBE_DEFER; 1059 } 1060 1061 return 0; 1062 } 1063 1064 static void otx2_pfaf_mbox_destroy(struct otx2_nic *pf) 1065 { 1066 struct mbox *mbox = &pf->mbox; 1067 1068 if (pf->mbox_wq) { 1069 destroy_workqueue(pf->mbox_wq); 1070 pf->mbox_wq = NULL; 1071 } 1072 1073 if (mbox->mbox.hwbase) 1074 iounmap((void __iomem *)mbox->mbox.hwbase); 1075 1076 otx2_mbox_destroy(&mbox->mbox); 1077 otx2_mbox_destroy(&mbox->mbox_up); 1078 } 1079 1080 static int otx2_pfaf_mbox_init(struct otx2_nic *pf) 1081 { 1082 struct mbox *mbox = &pf->mbox; 1083 void __iomem *hwbase; 1084 int err; 1085 1086 mbox->pfvf = pf; 1087 pf->mbox_wq = alloc_ordered_workqueue("otx2_pfaf_mailbox", 1088 WQ_HIGHPRI | WQ_MEM_RECLAIM); 1089 if (!pf->mbox_wq) 1090 return -ENOMEM; 1091 1092 /* Mailbox is a reserved memory (in RAM) region shared between 1093 * admin function (i.e AF) and this PF, shouldn't be mapped as 1094 * device memory to allow unaligned accesses. 1095 */ 1096 hwbase = ioremap_wc(pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM), 1097 MBOX_SIZE); 1098 if (!hwbase) { 1099 dev_err(pf->dev, "Unable to map PFAF mailbox region\n"); 1100 err = -ENOMEM; 1101 goto exit; 1102 } 1103 1104 err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base, 1105 MBOX_DIR_PFAF, 1); 1106 if (err) 1107 goto exit; 1108 1109 err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base, 1110 MBOX_DIR_PFAF_UP, 1); 1111 if (err) 1112 goto exit; 1113 1114 err = otx2_mbox_bbuf_init(mbox, pf->pdev); 1115 if (err) 1116 goto exit; 1117 1118 INIT_WORK(&mbox->mbox_wrk, otx2_pfaf_mbox_handler); 1119 INIT_WORK(&mbox->mbox_up_wrk, otx2_pfaf_mbox_up_handler); 1120 mutex_init(&mbox->lock); 1121 1122 return 0; 1123 exit: 1124 otx2_pfaf_mbox_destroy(pf); 1125 return err; 1126 } 1127 1128 static int otx2_cgx_config_linkevents(struct otx2_nic *pf, bool enable) 1129 { 1130 struct msg_req *msg; 1131 int err; 1132 1133 mutex_lock(&pf->mbox.lock); 1134 if (enable) 1135 msg = otx2_mbox_alloc_msg_cgx_start_linkevents(&pf->mbox); 1136 else 1137 msg = otx2_mbox_alloc_msg_cgx_stop_linkevents(&pf->mbox); 1138 1139 if (!msg) { 1140 mutex_unlock(&pf->mbox.lock); 1141 return -ENOMEM; 1142 } 1143 1144 err = otx2_sync_mbox_msg(&pf->mbox); 1145 mutex_unlock(&pf->mbox.lock); 1146 return err; 1147 } 1148 1149 int otx2_reset_mac_stats(struct otx2_nic *pfvf) 1150 { 1151 struct msg_req *req; 1152 int err; 1153 1154 mutex_lock(&pfvf->mbox.lock); 1155 req = otx2_mbox_alloc_msg_cgx_stats_rst(&pfvf->mbox); 1156 if (!req) { 1157 mutex_unlock(&pfvf->mbox.lock); 1158 return -ENOMEM; 1159 } 1160 1161 err = otx2_sync_mbox_msg(&pfvf->mbox); 1162 mutex_unlock(&pfvf->mbox.lock); 1163 return err; 1164 } 1165 1166 static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable) 1167 { 1168 struct msg_req *msg; 1169 int err; 1170 1171 if (enable && !bitmap_empty(pf->flow_cfg->dmacflt_bmap, 1172 pf->flow_cfg->dmacflt_max_flows)) 1173 netdev_warn(pf->netdev, 1174 "CGX/RPM internal loopback might not work as DMAC filters are active\n"); 1175 1176 mutex_lock(&pf->mbox.lock); 1177 if (enable) 1178 msg = otx2_mbox_alloc_msg_cgx_intlbk_enable(&pf->mbox); 1179 else 1180 msg = otx2_mbox_alloc_msg_cgx_intlbk_disable(&pf->mbox); 1181 1182 if (!msg) { 1183 mutex_unlock(&pf->mbox.lock); 1184 return -ENOMEM; 1185 } 1186 1187 err = otx2_sync_mbox_msg(&pf->mbox); 1188 mutex_unlock(&pf->mbox.lock); 1189 return err; 1190 } 1191 1192 int otx2_set_real_num_queues(struct net_device *netdev, 1193 int tx_queues, int rx_queues) 1194 { 1195 int err; 1196 1197 err = netif_set_real_num_tx_queues(netdev, tx_queues); 1198 if (err) { 1199 netdev_err(netdev, 1200 "Failed to set no of Tx queues: %d\n", tx_queues); 1201 return err; 1202 } 1203 1204 err = netif_set_real_num_rx_queues(netdev, rx_queues); 1205 if (err) 1206 netdev_err(netdev, 1207 "Failed to set no of Rx queues: %d\n", rx_queues); 1208 return err; 1209 } 1210 EXPORT_SYMBOL(otx2_set_real_num_queues); 1211 1212 static char *nix_sqoperr_e_str[NIX_SQOPERR_MAX] = { 1213 "NIX_SQOPERR_OOR", 1214 "NIX_SQOPERR_CTX_FAULT", 1215 "NIX_SQOPERR_CTX_POISON", 1216 "NIX_SQOPERR_DISABLED", 1217 "NIX_SQOPERR_SIZE_ERR", 1218 "NIX_SQOPERR_OFLOW", 1219 "NIX_SQOPERR_SQB_NULL", 1220 "NIX_SQOPERR_SQB_FAULT", 1221 "NIX_SQOPERR_SQE_SZ_ZERO", 1222 }; 1223 1224 static char *nix_mnqerr_e_str[NIX_MNQERR_MAX] = { 1225 "NIX_MNQERR_SQ_CTX_FAULT", 1226 "NIX_MNQERR_SQ_CTX_POISON", 1227 "NIX_MNQERR_SQB_FAULT", 1228 "NIX_MNQERR_SQB_POISON", 1229 "NIX_MNQERR_TOTAL_ERR", 1230 "NIX_MNQERR_LSO_ERR", 1231 "NIX_MNQERR_CQ_QUERY_ERR", 1232 "NIX_MNQERR_MAX_SQE_SIZE_ERR", 1233 "NIX_MNQERR_MAXLEN_ERR", 1234 "NIX_MNQERR_SQE_SIZEM1_ZERO", 1235 }; 1236 1237 static char *nix_snd_status_e_str[NIX_SND_STATUS_MAX] = { 1238 [NIX_SND_STATUS_GOOD] = "NIX_SND_STATUS_GOOD", 1239 [NIX_SND_STATUS_SQ_CTX_FAULT] = "NIX_SND_STATUS_SQ_CTX_FAULT", 1240 [NIX_SND_STATUS_SQ_CTX_POISON] = "NIX_SND_STATUS_SQ_CTX_POISON", 1241 [NIX_SND_STATUS_SQB_FAULT] = "NIX_SND_STATUS_SQB_FAULT", 1242 [NIX_SND_STATUS_SQB_POISON] = "NIX_SND_STATUS_SQB_POISON", 1243 [NIX_SND_STATUS_HDR_ERR] = "NIX_SND_STATUS_HDR_ERR", 1244 [NIX_SND_STATUS_EXT_ERR] = "NIX_SND_STATUS_EXT_ERR", 1245 [NIX_SND_STATUS_JUMP_FAULT] = "NIX_SND_STATUS_JUMP_FAULT", 1246 [NIX_SND_STATUS_JUMP_POISON] = "NIX_SND_STATUS_JUMP_POISON", 1247 [NIX_SND_STATUS_CRC_ERR] = "NIX_SND_STATUS_CRC_ERR", 1248 [NIX_SND_STATUS_IMM_ERR] = "NIX_SND_STATUS_IMM_ERR", 1249 [NIX_SND_STATUS_SG_ERR] = "NIX_SND_STATUS_SG_ERR", 1250 [NIX_SND_STATUS_MEM_ERR] = "NIX_SND_STATUS_MEM_ERR", 1251 [NIX_SND_STATUS_INVALID_SUBDC] = "NIX_SND_STATUS_INVALID_SUBDC", 1252 [NIX_SND_STATUS_SUBDC_ORDER_ERR] = "NIX_SND_STATUS_SUBDC_ORDER_ERR", 1253 [NIX_SND_STATUS_DATA_FAULT] = "NIX_SND_STATUS_DATA_FAULT", 1254 [NIX_SND_STATUS_DATA_POISON] = "NIX_SND_STATUS_DATA_POISON", 1255 [NIX_SND_STATUS_NPC_DROP_ACTION] = "NIX_SND_STATUS_NPC_DROP_ACTION", 1256 [NIX_SND_STATUS_LOCK_VIOL] = "NIX_SND_STATUS_LOCK_VIOL", 1257 [NIX_SND_STATUS_NPC_UCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_UCAST_CHAN_ERR", 1258 [NIX_SND_STATUS_NPC_MCAST_CHAN_ERR] = "NIX_SND_STAT_NPC_MCAST_CHAN_ERR", 1259 [NIX_SND_STATUS_NPC_MCAST_ABORT] = "NIX_SND_STATUS_NPC_MCAST_ABORT", 1260 [NIX_SND_STATUS_NPC_VTAG_PTR_ERR] = "NIX_SND_STATUS_NPC_VTAG_PTR_ERR", 1261 [NIX_SND_STATUS_NPC_VTAG_SIZE_ERR] = "NIX_SND_STATUS_NPC_VTAG_SIZE_ERR", 1262 [NIX_SND_STATUS_SEND_MEM_FAULT] = "NIX_SND_STATUS_SEND_MEM_FAULT", 1263 [NIX_SND_STATUS_SEND_STATS_ERR] = "NIX_SND_STATUS_SEND_STATS_ERR", 1264 }; 1265 1266 static irqreturn_t otx2_q_intr_handler(int irq, void *data) 1267 { 1268 struct otx2_nic *pf = data; 1269 struct otx2_snd_queue *sq; 1270 u64 val, *ptr; 1271 u64 qidx = 0; 1272 1273 /* CQ */ 1274 for (qidx = 0; qidx < pf->qset.cq_cnt; qidx++) { 1275 ptr = otx2_get_regaddr(pf, NIX_LF_CQ_OP_INT); 1276 val = otx2_atomic64_add((qidx << 44), ptr); 1277 1278 otx2_write64(pf, NIX_LF_CQ_OP_INT, (qidx << 44) | 1279 (val & NIX_CQERRINT_BITS)); 1280 if (!(val & (NIX_CQERRINT_BITS | BIT_ULL(42)))) 1281 continue; 1282 1283 if (val & BIT_ULL(42)) { 1284 netdev_err(pf->netdev, 1285 "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1286 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1287 } else { 1288 if (val & BIT_ULL(NIX_CQERRINT_DOOR_ERR)) 1289 netdev_err(pf->netdev, "CQ%lld: Doorbell error", 1290 qidx); 1291 if (val & BIT_ULL(NIX_CQERRINT_CQE_FAULT)) 1292 netdev_err(pf->netdev, 1293 "CQ%lld: Memory fault on CQE write to LLC/DRAM", 1294 qidx); 1295 } 1296 1297 schedule_work(&pf->reset_task); 1298 } 1299 1300 /* SQ */ 1301 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1302 u64 sq_op_err_dbg, mnq_err_dbg, snd_err_dbg; 1303 u8 sq_op_err_code, mnq_err_code, snd_err_code; 1304 1305 sq = &pf->qset.sq[qidx]; 1306 if (!sq->sqb_ptrs) 1307 continue; 1308 1309 /* Below debug registers captures first errors corresponding to 1310 * those registers. We don't have to check against SQ qid as 1311 * these are fatal errors. 1312 */ 1313 1314 ptr = otx2_get_regaddr(pf, NIX_LF_SQ_OP_INT); 1315 val = otx2_atomic64_add((qidx << 44), ptr); 1316 otx2_write64(pf, NIX_LF_SQ_OP_INT, (qidx << 44) | 1317 (val & NIX_SQINT_BITS)); 1318 1319 if (val & BIT_ULL(42)) { 1320 netdev_err(pf->netdev, 1321 "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n", 1322 qidx, otx2_read64(pf, NIX_LF_ERR_INT)); 1323 goto done; 1324 } 1325 1326 sq_op_err_dbg = otx2_read64(pf, NIX_LF_SQ_OP_ERR_DBG); 1327 if (!(sq_op_err_dbg & BIT(44))) 1328 goto chk_mnq_err_dbg; 1329 1330 sq_op_err_code = FIELD_GET(GENMASK(7, 0), sq_op_err_dbg); 1331 netdev_err(pf->netdev, 1332 "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(0x%llx) err=%s(%#x)\n", 1333 qidx, sq_op_err_dbg, 1334 nix_sqoperr_e_str[sq_op_err_code], 1335 sq_op_err_code); 1336 1337 otx2_write64(pf, NIX_LF_SQ_OP_ERR_DBG, BIT_ULL(44)); 1338 1339 if (sq_op_err_code == NIX_SQOPERR_SQB_NULL) 1340 goto chk_mnq_err_dbg; 1341 1342 /* Err is not NIX_SQOPERR_SQB_NULL, call aq function to read SQ structure. 1343 * TODO: But we are in irq context. How to call mbox functions which does sleep 1344 */ 1345 1346 chk_mnq_err_dbg: 1347 mnq_err_dbg = otx2_read64(pf, NIX_LF_MNQ_ERR_DBG); 1348 if (!(mnq_err_dbg & BIT(44))) 1349 goto chk_snd_err_dbg; 1350 1351 mnq_err_code = FIELD_GET(GENMASK(7, 0), mnq_err_dbg); 1352 netdev_err(pf->netdev, 1353 "SQ%lld: NIX_LF_MNQ_ERR_DBG(0x%llx) err=%s(%#x)\n", 1354 qidx, mnq_err_dbg, nix_mnqerr_e_str[mnq_err_code], 1355 mnq_err_code); 1356 otx2_write64(pf, NIX_LF_MNQ_ERR_DBG, BIT_ULL(44)); 1357 1358 chk_snd_err_dbg: 1359 snd_err_dbg = otx2_read64(pf, NIX_LF_SEND_ERR_DBG); 1360 if (snd_err_dbg & BIT(44)) { 1361 snd_err_code = FIELD_GET(GENMASK(7, 0), snd_err_dbg); 1362 netdev_err(pf->netdev, 1363 "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s(%#x)\n", 1364 qidx, snd_err_dbg, 1365 nix_snd_status_e_str[snd_err_code], 1366 snd_err_code); 1367 otx2_write64(pf, NIX_LF_SEND_ERR_DBG, BIT_ULL(44)); 1368 } 1369 1370 done: 1371 /* Print values and reset */ 1372 if (val & BIT_ULL(NIX_SQINT_SQB_ALLOC_FAIL)) 1373 netdev_err(pf->netdev, "SQ%lld: SQB allocation failed", 1374 qidx); 1375 1376 schedule_work(&pf->reset_task); 1377 } 1378 1379 return IRQ_HANDLED; 1380 } 1381 1382 static irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq) 1383 { 1384 struct otx2_cq_poll *cq_poll = (struct otx2_cq_poll *)cq_irq; 1385 struct otx2_nic *pf = (struct otx2_nic *)cq_poll->dev; 1386 int qidx = cq_poll->cint_idx; 1387 1388 /* Disable interrupts. 1389 * 1390 * Completion interrupts behave in a level-triggered interrupt 1391 * fashion, and hence have to be cleared only after it is serviced. 1392 */ 1393 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 1394 1395 /* Schedule NAPI */ 1396 pf->napi_events++; 1397 napi_schedule_irqoff(&cq_poll->napi); 1398 1399 return IRQ_HANDLED; 1400 } 1401 1402 static void otx2_disable_napi(struct otx2_nic *pf) 1403 { 1404 struct otx2_qset *qset = &pf->qset; 1405 struct otx2_cq_poll *cq_poll; 1406 int qidx; 1407 1408 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1409 cq_poll = &qset->napi[qidx]; 1410 cancel_work_sync(&cq_poll->dim.work); 1411 napi_disable(&cq_poll->napi); 1412 netif_napi_del(&cq_poll->napi); 1413 } 1414 } 1415 1416 static void otx2_free_cq_res(struct otx2_nic *pf) 1417 { 1418 struct otx2_qset *qset = &pf->qset; 1419 struct otx2_cq_queue *cq; 1420 int qidx; 1421 1422 /* Disable CQs */ 1423 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_CQ, false); 1424 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1425 cq = &qset->cq[qidx]; 1426 qmem_free(pf->dev, cq->cqe); 1427 } 1428 } 1429 1430 static void otx2_free_sq_res(struct otx2_nic *pf) 1431 { 1432 struct otx2_qset *qset = &pf->qset; 1433 struct otx2_snd_queue *sq; 1434 int qidx; 1435 1436 /* Disable SQs */ 1437 otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_SQ, false); 1438 /* Free SQB pointers */ 1439 otx2_sq_free_sqbs(pf); 1440 for (qidx = 0; qidx < otx2_get_total_tx_queues(pf); qidx++) { 1441 sq = &qset->sq[qidx]; 1442 /* Skip freeing Qos queues if they are not initialized */ 1443 if (!sq->sqe) 1444 continue; 1445 qmem_free(pf->dev, sq->sqe); 1446 qmem_free(pf->dev, sq->tso_hdrs); 1447 kfree(sq->sg); 1448 kfree(sq->sqb_ptrs); 1449 } 1450 } 1451 1452 static int otx2_get_rbuf_size(struct otx2_nic *pf, int mtu) 1453 { 1454 int frame_size; 1455 int total_size; 1456 int rbuf_size; 1457 1458 if (pf->hw.rbuf_len) 1459 return ALIGN(pf->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM; 1460 1461 /* The data transferred by NIX to memory consists of actual packet 1462 * plus additional data which has timestamp and/or EDSA/HIGIG2 1463 * headers if interface is configured in corresponding modes. 1464 * NIX transfers entire data using 6 segments/buffers and writes 1465 * a CQE_RX descriptor with those segment addresses. First segment 1466 * has additional data prepended to packet. Also software omits a 1467 * headroom of 128 bytes in each segment. Hence the total size of 1468 * memory needed to receive a packet with 'mtu' is: 1469 * frame size = mtu + additional data; 1470 * memory = frame_size + headroom * 6; 1471 * each receive buffer size = memory / 6; 1472 */ 1473 frame_size = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; 1474 total_size = frame_size + OTX2_HEAD_ROOM * 6; 1475 rbuf_size = total_size / 6; 1476 1477 return ALIGN(rbuf_size, 2048); 1478 } 1479 1480 static int otx2_init_hw_resources(struct otx2_nic *pf) 1481 { 1482 struct nix_lf_free_req *free_req; 1483 struct mbox *mbox = &pf->mbox; 1484 struct otx2_hw *hw = &pf->hw; 1485 struct msg_req *req; 1486 int err = 0, lvl; 1487 1488 /* Set required NPA LF's pool counts 1489 * Auras and Pools are used in a 1:1 mapping, 1490 * so, aura count = pool count. 1491 */ 1492 hw->rqpool_cnt = hw->rx_queues; 1493 hw->sqpool_cnt = otx2_get_total_tx_queues(pf); 1494 hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt; 1495 1496 /* Maximum hardware supported transmit length */ 1497 pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN; 1498 1499 pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu); 1500 1501 mutex_lock(&mbox->lock); 1502 /* NPA init */ 1503 err = otx2_config_npa(pf); 1504 if (err) 1505 goto exit; 1506 1507 /* NIX init */ 1508 err = otx2_config_nix(pf); 1509 if (err) 1510 goto err_free_npa_lf; 1511 1512 /* Enable backpressure for CGX mapped PF/VFs */ 1513 if (!is_otx2_lbkvf(pf->pdev)) 1514 otx2_nix_config_bp(pf, true); 1515 1516 /* Init Auras and pools used by NIX RQ, for free buffer ptrs */ 1517 err = otx2_rq_aura_pool_init(pf); 1518 if (err) { 1519 mutex_unlock(&mbox->lock); 1520 goto err_free_nix_lf; 1521 } 1522 /* Init Auras and pools used by NIX SQ, for queueing SQEs */ 1523 err = otx2_sq_aura_pool_init(pf); 1524 if (err) { 1525 mutex_unlock(&mbox->lock); 1526 goto err_free_rq_ptrs; 1527 } 1528 1529 err = otx2_txsch_alloc(pf); 1530 if (err) { 1531 mutex_unlock(&mbox->lock); 1532 goto err_free_sq_ptrs; 1533 } 1534 1535 #ifdef CONFIG_DCB 1536 if (pf->pfc_en) { 1537 err = otx2_pfc_txschq_alloc(pf); 1538 if (err) { 1539 mutex_unlock(&mbox->lock); 1540 goto err_free_sq_ptrs; 1541 } 1542 } 1543 #endif 1544 1545 err = otx2_config_nix_queues(pf); 1546 if (err) { 1547 mutex_unlock(&mbox->lock); 1548 goto err_free_txsch; 1549 } 1550 1551 for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) { 1552 err = otx2_txschq_config(pf, lvl, 0, false); 1553 if (err) { 1554 mutex_unlock(&mbox->lock); 1555 goto err_free_nix_queues; 1556 } 1557 } 1558 1559 #ifdef CONFIG_DCB 1560 if (pf->pfc_en) { 1561 err = otx2_pfc_txschq_config(pf); 1562 if (err) { 1563 mutex_unlock(&mbox->lock); 1564 goto err_free_nix_queues; 1565 } 1566 } 1567 #endif 1568 1569 mutex_unlock(&mbox->lock); 1570 return err; 1571 1572 err_free_nix_queues: 1573 otx2_free_sq_res(pf); 1574 otx2_free_cq_res(pf); 1575 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1576 err_free_txsch: 1577 otx2_txschq_stop(pf); 1578 err_free_sq_ptrs: 1579 otx2_sq_free_sqbs(pf); 1580 err_free_rq_ptrs: 1581 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1582 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1583 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1584 otx2_aura_pool_free(pf); 1585 err_free_nix_lf: 1586 mutex_lock(&mbox->lock); 1587 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1588 if (free_req) { 1589 free_req->flags = NIX_LF_DISABLE_FLOWS; 1590 if (otx2_sync_mbox_msg(mbox)) 1591 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1592 } 1593 err_free_npa_lf: 1594 /* Reset NPA LF */ 1595 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1596 if (req) { 1597 if (otx2_sync_mbox_msg(mbox)) 1598 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1599 } 1600 exit: 1601 mutex_unlock(&mbox->lock); 1602 return err; 1603 } 1604 1605 static void otx2_free_hw_resources(struct otx2_nic *pf) 1606 { 1607 struct otx2_qset *qset = &pf->qset; 1608 struct nix_lf_free_req *free_req; 1609 struct mbox *mbox = &pf->mbox; 1610 struct otx2_cq_queue *cq; 1611 struct otx2_pool *pool; 1612 struct msg_req *req; 1613 int pool_id; 1614 int qidx; 1615 1616 /* Ensure all SQE are processed */ 1617 otx2_sqb_flush(pf); 1618 1619 /* Stop transmission */ 1620 otx2_txschq_stop(pf); 1621 1622 #ifdef CONFIG_DCB 1623 if (pf->pfc_en) 1624 otx2_pfc_txschq_stop(pf); 1625 #endif 1626 1627 otx2_clean_qos_queues(pf); 1628 1629 mutex_lock(&mbox->lock); 1630 /* Disable backpressure */ 1631 if (!(pf->pcifunc & RVU_PFVF_FUNC_MASK)) 1632 otx2_nix_config_bp(pf, false); 1633 mutex_unlock(&mbox->lock); 1634 1635 /* Disable RQs */ 1636 otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false); 1637 1638 /*Dequeue all CQEs */ 1639 for (qidx = 0; qidx < qset->cq_cnt; qidx++) { 1640 cq = &qset->cq[qidx]; 1641 if (cq->cq_type == CQ_RX) 1642 otx2_cleanup_rx_cqes(pf, cq, qidx); 1643 else 1644 otx2_cleanup_tx_cqes(pf, cq); 1645 } 1646 otx2_free_pending_sqe(pf); 1647 1648 otx2_free_sq_res(pf); 1649 1650 /* Free RQ buffer pointers*/ 1651 otx2_free_aura_ptr(pf, AURA_NIX_RQ); 1652 1653 for (qidx = 0; qidx < pf->hw.rx_queues; qidx++) { 1654 pool_id = otx2_get_pool_idx(pf, AURA_NIX_RQ, qidx); 1655 pool = &pf->qset.pool[pool_id]; 1656 page_pool_destroy(pool->page_pool); 1657 pool->page_pool = NULL; 1658 } 1659 1660 otx2_free_cq_res(pf); 1661 1662 /* Free all ingress bandwidth profiles allocated */ 1663 cn10k_free_all_ipolicers(pf); 1664 1665 mutex_lock(&mbox->lock); 1666 /* Reset NIX LF */ 1667 free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox); 1668 if (free_req) { 1669 free_req->flags = NIX_LF_DISABLE_FLOWS; 1670 if (!(pf->flags & OTX2_FLAG_PF_SHUTDOWN)) 1671 free_req->flags |= NIX_LF_DONT_FREE_TX_VTAG; 1672 if (otx2_sync_mbox_msg(mbox)) 1673 dev_err(pf->dev, "%s failed to free nixlf\n", __func__); 1674 } 1675 mutex_unlock(&mbox->lock); 1676 1677 /* Disable NPA Pool and Aura hw context */ 1678 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true); 1679 otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true); 1680 otx2_aura_pool_free(pf); 1681 1682 mutex_lock(&mbox->lock); 1683 /* Reset NPA LF */ 1684 req = otx2_mbox_alloc_msg_npa_lf_free(mbox); 1685 if (req) { 1686 if (otx2_sync_mbox_msg(mbox)) 1687 dev_err(pf->dev, "%s failed to free npalf\n", __func__); 1688 } 1689 mutex_unlock(&mbox->lock); 1690 } 1691 1692 static bool otx2_promisc_use_mce_list(struct otx2_nic *pfvf) 1693 { 1694 int vf; 1695 1696 /* The AF driver will determine whether to allow the VF netdev or not */ 1697 if (is_otx2_vf(pfvf->pcifunc)) 1698 return true; 1699 1700 /* check if there are any trusted VFs associated with the PF netdev */ 1701 for (vf = 0; vf < pci_num_vf(pfvf->pdev); vf++) 1702 if (pfvf->vf_configs[vf].trusted) 1703 return true; 1704 return false; 1705 } 1706 1707 static void otx2_do_set_rx_mode(struct otx2_nic *pf) 1708 { 1709 struct net_device *netdev = pf->netdev; 1710 struct nix_rx_mode *req; 1711 bool promisc = false; 1712 1713 if (!(netdev->flags & IFF_UP)) 1714 return; 1715 1716 if ((netdev->flags & IFF_PROMISC) || 1717 (netdev_uc_count(netdev) > OTX2_MAX_UNICAST_FLOWS)) { 1718 promisc = true; 1719 } 1720 1721 /* Write unicast address to mcam entries or del from mcam */ 1722 if (!promisc && netdev->priv_flags & IFF_UNICAST_FLT) 1723 __dev_uc_sync(netdev, otx2_add_macfilter, otx2_del_macfilter); 1724 1725 mutex_lock(&pf->mbox.lock); 1726 req = otx2_mbox_alloc_msg_nix_set_rx_mode(&pf->mbox); 1727 if (!req) { 1728 mutex_unlock(&pf->mbox.lock); 1729 return; 1730 } 1731 1732 req->mode = NIX_RX_MODE_UCAST; 1733 1734 if (promisc) 1735 req->mode |= NIX_RX_MODE_PROMISC; 1736 if (netdev->flags & (IFF_ALLMULTI | IFF_MULTICAST)) 1737 req->mode |= NIX_RX_MODE_ALLMULTI; 1738 1739 if (otx2_promisc_use_mce_list(pf)) 1740 req->mode |= NIX_RX_MODE_USE_MCE; 1741 1742 otx2_sync_mbox_msg(&pf->mbox); 1743 mutex_unlock(&pf->mbox.lock); 1744 } 1745 1746 static void otx2_set_irq_coalesce(struct otx2_nic *pfvf) 1747 { 1748 int cint; 1749 1750 for (cint = 0; cint < pfvf->hw.cint_cnt; cint++) 1751 otx2_config_irq_coalescing(pfvf, cint); 1752 } 1753 1754 static void otx2_dim_work(struct work_struct *w) 1755 { 1756 struct dim_cq_moder cur_moder; 1757 struct otx2_cq_poll *cq_poll; 1758 struct otx2_nic *pfvf; 1759 struct dim *dim; 1760 1761 dim = container_of(w, struct dim, work); 1762 cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); 1763 cq_poll = container_of(dim, struct otx2_cq_poll, dim); 1764 pfvf = (struct otx2_nic *)cq_poll->dev; 1765 pfvf->hw.cq_time_wait = (cur_moder.usec > CQ_TIMER_THRESH_MAX) ? 1766 CQ_TIMER_THRESH_MAX : cur_moder.usec; 1767 pfvf->hw.cq_ecount_wait = (cur_moder.pkts > NAPI_POLL_WEIGHT) ? 1768 NAPI_POLL_WEIGHT : cur_moder.pkts; 1769 otx2_set_irq_coalesce(pfvf); 1770 dim->state = DIM_START_MEASURE; 1771 } 1772 1773 int otx2_open(struct net_device *netdev) 1774 { 1775 struct otx2_nic *pf = netdev_priv(netdev); 1776 struct otx2_cq_poll *cq_poll = NULL; 1777 struct otx2_qset *qset = &pf->qset; 1778 int err = 0, qidx, vec; 1779 char *irq_name; 1780 1781 netif_carrier_off(netdev); 1782 1783 /* RQ and SQs are mapped to different CQs, 1784 * so find out max CQ IRQs (i.e CINTs) needed. 1785 */ 1786 pf->hw.non_qos_queues = pf->hw.tx_queues + pf->hw.xdp_queues; 1787 pf->hw.cint_cnt = max3(pf->hw.rx_queues, pf->hw.tx_queues, 1788 pf->hw.tc_tx_queues); 1789 1790 pf->qset.cq_cnt = pf->hw.rx_queues + otx2_get_total_tx_queues(pf); 1791 1792 qset->napi = kcalloc(pf->hw.cint_cnt, sizeof(*cq_poll), GFP_KERNEL); 1793 if (!qset->napi) 1794 return -ENOMEM; 1795 1796 /* CQ size of RQ */ 1797 qset->rqe_cnt = qset->rqe_cnt ? qset->rqe_cnt : Q_COUNT(Q_SIZE_256); 1798 /* CQ size of SQ */ 1799 qset->sqe_cnt = qset->sqe_cnt ? qset->sqe_cnt : Q_COUNT(Q_SIZE_4K); 1800 1801 err = -ENOMEM; 1802 qset->cq = kcalloc(pf->qset.cq_cnt, 1803 sizeof(struct otx2_cq_queue), GFP_KERNEL); 1804 if (!qset->cq) 1805 goto err_free_mem; 1806 1807 qset->sq = kcalloc(otx2_get_total_tx_queues(pf), 1808 sizeof(struct otx2_snd_queue), GFP_KERNEL); 1809 if (!qset->sq) 1810 goto err_free_mem; 1811 1812 qset->rq = kcalloc(pf->hw.rx_queues, 1813 sizeof(struct otx2_rcv_queue), GFP_KERNEL); 1814 if (!qset->rq) 1815 goto err_free_mem; 1816 1817 err = otx2_init_hw_resources(pf); 1818 if (err) 1819 goto err_free_mem; 1820 1821 /* Register NAPI handler */ 1822 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1823 cq_poll = &qset->napi[qidx]; 1824 cq_poll->cint_idx = qidx; 1825 /* RQ0 & SQ0 are mapped to CINT0 and so on.. 1826 * 'cq_ids[0]' points to RQ's CQ and 1827 * 'cq_ids[1]' points to SQ's CQ and 1828 * 'cq_ids[2]' points to XDP's CQ and 1829 */ 1830 cq_poll->cq_ids[CQ_RX] = 1831 (qidx < pf->hw.rx_queues) ? qidx : CINT_INVALID_CQ; 1832 cq_poll->cq_ids[CQ_TX] = (qidx < pf->hw.tx_queues) ? 1833 qidx + pf->hw.rx_queues : CINT_INVALID_CQ; 1834 if (pf->xdp_prog) 1835 cq_poll->cq_ids[CQ_XDP] = (qidx < pf->hw.xdp_queues) ? 1836 (qidx + pf->hw.rx_queues + 1837 pf->hw.tx_queues) : 1838 CINT_INVALID_CQ; 1839 else 1840 cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ; 1841 1842 cq_poll->cq_ids[CQ_QOS] = (qidx < pf->hw.tc_tx_queues) ? 1843 (qidx + pf->hw.rx_queues + 1844 pf->hw.non_qos_queues) : 1845 CINT_INVALID_CQ; 1846 1847 cq_poll->dev = (void *)pf; 1848 cq_poll->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE; 1849 INIT_WORK(&cq_poll->dim.work, otx2_dim_work); 1850 netif_napi_add(netdev, &cq_poll->napi, otx2_napi_handler); 1851 napi_enable(&cq_poll->napi); 1852 } 1853 1854 /* Set maximum frame size allowed in HW */ 1855 err = otx2_hw_set_mtu(pf, netdev->mtu); 1856 if (err) 1857 goto err_disable_napi; 1858 1859 /* Setup segmentation algorithms, if failed, clear offload capability */ 1860 otx2_setup_segmentation(pf); 1861 1862 /* Initialize RSS */ 1863 err = otx2_rss_init(pf); 1864 if (err) 1865 goto err_disable_napi; 1866 1867 /* Register Queue IRQ handlers */ 1868 vec = pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START; 1869 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 1870 1871 snprintf(irq_name, NAME_SIZE, "%s-qerr", pf->netdev->name); 1872 1873 err = request_irq(pci_irq_vector(pf->pdev, vec), 1874 otx2_q_intr_handler, 0, irq_name, pf); 1875 if (err) { 1876 dev_err(pf->dev, 1877 "RVUPF%d: IRQ registration failed for QERR\n", 1878 rvu_get_pf(pf->pcifunc)); 1879 goto err_disable_napi; 1880 } 1881 1882 /* Enable QINT IRQ */ 1883 otx2_write64(pf, NIX_LF_QINTX_ENA_W1S(0), BIT_ULL(0)); 1884 1885 /* Register CQ IRQ handlers */ 1886 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 1887 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 1888 irq_name = &pf->hw.irq_name[vec * NAME_SIZE]; 1889 1890 snprintf(irq_name, NAME_SIZE, "%s-rxtx-%d", pf->netdev->name, 1891 qidx); 1892 1893 err = request_irq(pci_irq_vector(pf->pdev, vec), 1894 otx2_cq_intr_handler, 0, irq_name, 1895 &qset->napi[qidx]); 1896 if (err) { 1897 dev_err(pf->dev, 1898 "RVUPF%d: IRQ registration failed for CQ%d\n", 1899 rvu_get_pf(pf->pcifunc), qidx); 1900 goto err_free_cints; 1901 } 1902 vec++; 1903 1904 otx2_config_irq_coalescing(pf, qidx); 1905 1906 /* Enable CQ IRQ */ 1907 otx2_write64(pf, NIX_LF_CINTX_INT(qidx), BIT_ULL(0)); 1908 otx2_write64(pf, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0)); 1909 } 1910 1911 otx2_set_cints_affinity(pf); 1912 1913 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 1914 otx2_enable_rxvlan(pf, true); 1915 1916 /* When reinitializing enable time stamping if it is enabled before */ 1917 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) { 1918 pf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 1919 otx2_config_hw_tx_tstamp(pf, true); 1920 } 1921 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) { 1922 pf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 1923 otx2_config_hw_rx_tstamp(pf, true); 1924 } 1925 1926 pf->flags &= ~OTX2_FLAG_INTF_DOWN; 1927 /* 'intf_down' may be checked on any cpu */ 1928 smp_wmb(); 1929 1930 /* Enable QoS configuration before starting tx queues */ 1931 otx2_qos_config_txschq(pf); 1932 1933 /* we have already received link status notification */ 1934 if (pf->linfo.link_up && !(pf->pcifunc & RVU_PFVF_FUNC_MASK)) 1935 otx2_handle_link_event(pf); 1936 1937 /* Install DMAC Filters */ 1938 if (pf->flags & OTX2_FLAG_DMACFLTR_SUPPORT) 1939 otx2_dmacflt_reinstall_flows(pf); 1940 1941 otx2_tc_apply_ingress_police_rules(pf); 1942 1943 err = otx2_rxtx_enable(pf, true); 1944 /* If a mbox communication error happens at this point then interface 1945 * will end up in a state such that it is in down state but hardware 1946 * mcam entries are enabled to receive the packets. Hence disable the 1947 * packet I/O. 1948 */ 1949 if (err == -EIO) 1950 goto err_disable_rxtx; 1951 else if (err) 1952 goto err_tx_stop_queues; 1953 1954 otx2_do_set_rx_mode(pf); 1955 1956 return 0; 1957 1958 err_disable_rxtx: 1959 otx2_rxtx_enable(pf, false); 1960 err_tx_stop_queues: 1961 netif_tx_stop_all_queues(netdev); 1962 netif_carrier_off(netdev); 1963 pf->flags |= OTX2_FLAG_INTF_DOWN; 1964 err_free_cints: 1965 otx2_free_cints(pf, qidx); 1966 vec = pci_irq_vector(pf->pdev, 1967 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 1968 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 1969 free_irq(vec, pf); 1970 err_disable_napi: 1971 otx2_disable_napi(pf); 1972 otx2_free_hw_resources(pf); 1973 err_free_mem: 1974 kfree(qset->sq); 1975 kfree(qset->cq); 1976 kfree(qset->rq); 1977 kfree(qset->napi); 1978 return err; 1979 } 1980 EXPORT_SYMBOL(otx2_open); 1981 1982 int otx2_stop(struct net_device *netdev) 1983 { 1984 struct otx2_nic *pf = netdev_priv(netdev); 1985 struct otx2_cq_poll *cq_poll = NULL; 1986 struct otx2_qset *qset = &pf->qset; 1987 struct otx2_rss_info *rss; 1988 int qidx, vec, wrk; 1989 1990 /* If the DOWN flag is set resources are already freed */ 1991 if (pf->flags & OTX2_FLAG_INTF_DOWN) 1992 return 0; 1993 1994 netif_carrier_off(netdev); 1995 netif_tx_stop_all_queues(netdev); 1996 1997 pf->flags |= OTX2_FLAG_INTF_DOWN; 1998 /* 'intf_down' may be checked on any cpu */ 1999 smp_wmb(); 2000 2001 /* First stop packet Rx/Tx */ 2002 otx2_rxtx_enable(pf, false); 2003 2004 /* Clear RSS enable flag */ 2005 rss = &pf->hw.rss_info; 2006 rss->enable = false; 2007 if (!netif_is_rxfh_configured(netdev)) 2008 kfree(rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]); 2009 2010 /* Cleanup Queue IRQ */ 2011 vec = pci_irq_vector(pf->pdev, 2012 pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START); 2013 otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0)); 2014 free_irq(vec, pf); 2015 2016 /* Cleanup CQ NAPI and IRQ */ 2017 vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START; 2018 for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) { 2019 /* Disable interrupt */ 2020 otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0)); 2021 2022 synchronize_irq(pci_irq_vector(pf->pdev, vec)); 2023 2024 cq_poll = &qset->napi[qidx]; 2025 napi_synchronize(&cq_poll->napi); 2026 vec++; 2027 } 2028 2029 netif_tx_disable(netdev); 2030 2031 for (wrk = 0; wrk < pf->qset.cq_cnt; wrk++) 2032 cancel_delayed_work_sync(&pf->refill_wrk[wrk].pool_refill_work); 2033 devm_kfree(pf->dev, pf->refill_wrk); 2034 2035 otx2_free_hw_resources(pf); 2036 otx2_free_cints(pf, pf->hw.cint_cnt); 2037 otx2_disable_napi(pf); 2038 2039 for (qidx = 0; qidx < netdev->num_tx_queues; qidx++) 2040 netdev_tx_reset_queue(netdev_get_tx_queue(netdev, qidx)); 2041 2042 2043 kfree(qset->sq); 2044 kfree(qset->cq); 2045 kfree(qset->rq); 2046 kfree(qset->napi); 2047 /* Do not clear RQ/SQ ringsize settings */ 2048 memset_startat(qset, 0, sqe_cnt); 2049 return 0; 2050 } 2051 EXPORT_SYMBOL(otx2_stop); 2052 2053 static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev) 2054 { 2055 struct otx2_nic *pf = netdev_priv(netdev); 2056 int qidx = skb_get_queue_mapping(skb); 2057 struct otx2_snd_queue *sq; 2058 struct netdev_queue *txq; 2059 int sq_idx; 2060 2061 /* XDP SQs are not mapped with TXQs 2062 * advance qid to derive correct sq mapped with QOS 2063 */ 2064 sq_idx = (qidx >= pf->hw.tx_queues) ? (qidx + pf->hw.xdp_queues) : qidx; 2065 2066 /* Check for minimum and maximum packet length */ 2067 if (skb->len <= ETH_HLEN || 2068 (!skb_shinfo(skb)->gso_size && skb->len > pf->tx_max_pktlen)) { 2069 dev_kfree_skb(skb); 2070 return NETDEV_TX_OK; 2071 } 2072 2073 sq = &pf->qset.sq[sq_idx]; 2074 txq = netdev_get_tx_queue(netdev, qidx); 2075 2076 if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) { 2077 netif_tx_stop_queue(txq); 2078 2079 /* Check again, incase SQBs got freed up */ 2080 smp_mb(); 2081 if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb) 2082 > sq->sqe_thresh) 2083 netif_tx_wake_queue(txq); 2084 2085 return NETDEV_TX_BUSY; 2086 } 2087 2088 return NETDEV_TX_OK; 2089 } 2090 2091 static int otx2_qos_select_htb_queue(struct otx2_nic *pf, struct sk_buff *skb, 2092 u16 htb_maj_id) 2093 { 2094 u16 classid; 2095 2096 if ((TC_H_MAJ(skb->priority) >> 16) == htb_maj_id) 2097 classid = TC_H_MIN(skb->priority); 2098 else 2099 classid = READ_ONCE(pf->qos.defcls); 2100 2101 if (!classid) 2102 return 0; 2103 2104 return otx2_get_txq_by_classid(pf, classid); 2105 } 2106 2107 u16 otx2_select_queue(struct net_device *netdev, struct sk_buff *skb, 2108 struct net_device *sb_dev) 2109 { 2110 struct otx2_nic *pf = netdev_priv(netdev); 2111 bool qos_enabled; 2112 #ifdef CONFIG_DCB 2113 u8 vlan_prio; 2114 #endif 2115 int txq; 2116 2117 qos_enabled = netdev->real_num_tx_queues > pf->hw.tx_queues; 2118 if (unlikely(qos_enabled)) { 2119 /* This smp_load_acquire() pairs with smp_store_release() in 2120 * otx2_qos_root_add() called from htb offload root creation 2121 */ 2122 u16 htb_maj_id = smp_load_acquire(&pf->qos.maj_id); 2123 2124 if (unlikely(htb_maj_id)) { 2125 txq = otx2_qos_select_htb_queue(pf, skb, htb_maj_id); 2126 if (txq > 0) 2127 return txq; 2128 goto process_pfc; 2129 } 2130 } 2131 2132 process_pfc: 2133 #ifdef CONFIG_DCB 2134 if (!skb_vlan_tag_present(skb)) 2135 goto pick_tx; 2136 2137 vlan_prio = skb->vlan_tci >> 13; 2138 if ((vlan_prio > pf->hw.tx_queues - 1) || 2139 !pf->pfc_alloc_status[vlan_prio]) 2140 goto pick_tx; 2141 2142 return vlan_prio; 2143 2144 pick_tx: 2145 #endif 2146 txq = netdev_pick_tx(netdev, skb, NULL); 2147 if (unlikely(qos_enabled)) 2148 return txq % pf->hw.tx_queues; 2149 2150 return txq; 2151 } 2152 EXPORT_SYMBOL(otx2_select_queue); 2153 2154 static netdev_features_t otx2_fix_features(struct net_device *dev, 2155 netdev_features_t features) 2156 { 2157 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2158 features |= NETIF_F_HW_VLAN_STAG_RX; 2159 else 2160 features &= ~NETIF_F_HW_VLAN_STAG_RX; 2161 2162 return features; 2163 } 2164 2165 static void otx2_set_rx_mode(struct net_device *netdev) 2166 { 2167 struct otx2_nic *pf = netdev_priv(netdev); 2168 2169 queue_work(pf->otx2_wq, &pf->rx_mode_work); 2170 } 2171 2172 static void otx2_rx_mode_wrk_handler(struct work_struct *work) 2173 { 2174 struct otx2_nic *pf = container_of(work, struct otx2_nic, rx_mode_work); 2175 2176 otx2_do_set_rx_mode(pf); 2177 } 2178 2179 static int otx2_set_features(struct net_device *netdev, 2180 netdev_features_t features) 2181 { 2182 netdev_features_t changed = features ^ netdev->features; 2183 struct otx2_nic *pf = netdev_priv(netdev); 2184 2185 if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev)) 2186 return otx2_cgx_config_loopback(pf, 2187 features & NETIF_F_LOOPBACK); 2188 2189 if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(netdev)) 2190 return otx2_enable_rxvlan(pf, 2191 features & NETIF_F_HW_VLAN_CTAG_RX); 2192 2193 return otx2_handle_ntuple_tc_features(netdev, features); 2194 } 2195 2196 static void otx2_reset_task(struct work_struct *work) 2197 { 2198 struct otx2_nic *pf = container_of(work, struct otx2_nic, reset_task); 2199 2200 if (!netif_running(pf->netdev)) 2201 return; 2202 2203 rtnl_lock(); 2204 otx2_stop(pf->netdev); 2205 pf->reset_count++; 2206 otx2_open(pf->netdev); 2207 netif_trans_update(pf->netdev); 2208 rtnl_unlock(); 2209 } 2210 2211 static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable) 2212 { 2213 struct msg_req *req; 2214 int err; 2215 2216 if (pfvf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED && enable) 2217 return 0; 2218 2219 mutex_lock(&pfvf->mbox.lock); 2220 if (enable) 2221 req = otx2_mbox_alloc_msg_cgx_ptp_rx_enable(&pfvf->mbox); 2222 else 2223 req = otx2_mbox_alloc_msg_cgx_ptp_rx_disable(&pfvf->mbox); 2224 if (!req) { 2225 mutex_unlock(&pfvf->mbox.lock); 2226 return -ENOMEM; 2227 } 2228 2229 err = otx2_sync_mbox_msg(&pfvf->mbox); 2230 if (err) { 2231 mutex_unlock(&pfvf->mbox.lock); 2232 return err; 2233 } 2234 2235 mutex_unlock(&pfvf->mbox.lock); 2236 if (enable) 2237 pfvf->flags |= OTX2_FLAG_RX_TSTAMP_ENABLED; 2238 else 2239 pfvf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED; 2240 return 0; 2241 } 2242 2243 static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable) 2244 { 2245 struct msg_req *req; 2246 int err; 2247 2248 if (pfvf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED && enable) 2249 return 0; 2250 2251 mutex_lock(&pfvf->mbox.lock); 2252 if (enable) 2253 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_enable(&pfvf->mbox); 2254 else 2255 req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_disable(&pfvf->mbox); 2256 if (!req) { 2257 mutex_unlock(&pfvf->mbox.lock); 2258 return -ENOMEM; 2259 } 2260 2261 err = otx2_sync_mbox_msg(&pfvf->mbox); 2262 if (err) { 2263 mutex_unlock(&pfvf->mbox.lock); 2264 return err; 2265 } 2266 2267 mutex_unlock(&pfvf->mbox.lock); 2268 if (enable) 2269 pfvf->flags |= OTX2_FLAG_TX_TSTAMP_ENABLED; 2270 else 2271 pfvf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED; 2272 return 0; 2273 } 2274 2275 int otx2_config_hwtstamp(struct net_device *netdev, struct ifreq *ifr) 2276 { 2277 struct otx2_nic *pfvf = netdev_priv(netdev); 2278 struct hwtstamp_config config; 2279 2280 if (!pfvf->ptp) 2281 return -ENODEV; 2282 2283 if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) 2284 return -EFAULT; 2285 2286 switch (config.tx_type) { 2287 case HWTSTAMP_TX_OFF: 2288 if (pfvf->flags & OTX2_FLAG_PTP_ONESTEP_SYNC) 2289 pfvf->flags &= ~OTX2_FLAG_PTP_ONESTEP_SYNC; 2290 2291 cancel_delayed_work(&pfvf->ptp->synctstamp_work); 2292 otx2_config_hw_tx_tstamp(pfvf, false); 2293 break; 2294 case HWTSTAMP_TX_ONESTEP_SYNC: 2295 if (!test_bit(CN10K_PTP_ONESTEP, &pfvf->hw.cap_flag)) 2296 return -ERANGE; 2297 pfvf->flags |= OTX2_FLAG_PTP_ONESTEP_SYNC; 2298 schedule_delayed_work(&pfvf->ptp->synctstamp_work, 2299 msecs_to_jiffies(500)); 2300 fallthrough; 2301 case HWTSTAMP_TX_ON: 2302 otx2_config_hw_tx_tstamp(pfvf, true); 2303 break; 2304 default: 2305 return -ERANGE; 2306 } 2307 2308 switch (config.rx_filter) { 2309 case HWTSTAMP_FILTER_NONE: 2310 otx2_config_hw_rx_tstamp(pfvf, false); 2311 break; 2312 case HWTSTAMP_FILTER_ALL: 2313 case HWTSTAMP_FILTER_SOME: 2314 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2315 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2316 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2317 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2318 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2319 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2320 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2321 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2322 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2323 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2324 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2325 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2326 otx2_config_hw_rx_tstamp(pfvf, true); 2327 config.rx_filter = HWTSTAMP_FILTER_ALL; 2328 break; 2329 default: 2330 return -ERANGE; 2331 } 2332 2333 memcpy(&pfvf->tstamp, &config, sizeof(config)); 2334 2335 return copy_to_user(ifr->ifr_data, &config, 2336 sizeof(config)) ? -EFAULT : 0; 2337 } 2338 EXPORT_SYMBOL(otx2_config_hwtstamp); 2339 2340 int otx2_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 2341 { 2342 struct otx2_nic *pfvf = netdev_priv(netdev); 2343 struct hwtstamp_config *cfg = &pfvf->tstamp; 2344 2345 switch (cmd) { 2346 case SIOCSHWTSTAMP: 2347 return otx2_config_hwtstamp(netdev, req); 2348 case SIOCGHWTSTAMP: 2349 return copy_to_user(req->ifr_data, cfg, 2350 sizeof(*cfg)) ? -EFAULT : 0; 2351 default: 2352 return -EOPNOTSUPP; 2353 } 2354 } 2355 EXPORT_SYMBOL(otx2_ioctl); 2356 2357 static int otx2_do_set_vf_mac(struct otx2_nic *pf, int vf, const u8 *mac) 2358 { 2359 struct npc_install_flow_req *req; 2360 int err; 2361 2362 mutex_lock(&pf->mbox.lock); 2363 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2364 if (!req) { 2365 err = -ENOMEM; 2366 goto out; 2367 } 2368 2369 ether_addr_copy(req->packet.dmac, mac); 2370 eth_broadcast_addr((u8 *)&req->mask.dmac); 2371 req->features = BIT_ULL(NPC_DMAC); 2372 req->channel = pf->hw.rx_chan_base; 2373 req->intf = NIX_INTF_RX; 2374 req->default_rule = 1; 2375 req->append = 1; 2376 req->vf = vf + 1; 2377 req->op = NIX_RX_ACTION_DEFAULT; 2378 2379 err = otx2_sync_mbox_msg(&pf->mbox); 2380 out: 2381 mutex_unlock(&pf->mbox.lock); 2382 return err; 2383 } 2384 2385 static int otx2_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 2386 { 2387 struct otx2_nic *pf = netdev_priv(netdev); 2388 struct pci_dev *pdev = pf->pdev; 2389 struct otx2_vf_config *config; 2390 int ret; 2391 2392 if (!netif_running(netdev)) 2393 return -EAGAIN; 2394 2395 if (vf >= pf->total_vfs) 2396 return -EINVAL; 2397 2398 if (!is_valid_ether_addr(mac)) 2399 return -EINVAL; 2400 2401 config = &pf->vf_configs[vf]; 2402 ether_addr_copy(config->mac, mac); 2403 2404 ret = otx2_do_set_vf_mac(pf, vf, mac); 2405 if (ret == 0) 2406 dev_info(&pdev->dev, 2407 "Load/Reload VF driver\n"); 2408 2409 return ret; 2410 } 2411 2412 static int otx2_do_set_vf_vlan(struct otx2_nic *pf, int vf, u16 vlan, u8 qos, 2413 __be16 proto) 2414 { 2415 struct otx2_flow_config *flow_cfg = pf->flow_cfg; 2416 struct nix_vtag_config_rsp *vtag_rsp; 2417 struct npc_delete_flow_req *del_req; 2418 struct nix_vtag_config *vtag_req; 2419 struct npc_install_flow_req *req; 2420 struct otx2_vf_config *config; 2421 int err = 0; 2422 u32 idx; 2423 2424 config = &pf->vf_configs[vf]; 2425 2426 if (!vlan && !config->vlan) 2427 goto out; 2428 2429 mutex_lock(&pf->mbox.lock); 2430 2431 /* free old tx vtag entry */ 2432 if (config->vlan) { 2433 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2434 if (!vtag_req) { 2435 err = -ENOMEM; 2436 goto out; 2437 } 2438 vtag_req->cfg_type = 0; 2439 vtag_req->tx.free_vtag0 = 1; 2440 vtag_req->tx.vtag0_idx = config->tx_vtag_idx; 2441 2442 err = otx2_sync_mbox_msg(&pf->mbox); 2443 if (err) 2444 goto out; 2445 } 2446 2447 if (!vlan && config->vlan) { 2448 /* rx */ 2449 del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox); 2450 if (!del_req) { 2451 err = -ENOMEM; 2452 goto out; 2453 } 2454 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2455 del_req->entry = 2456 flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2457 err = otx2_sync_mbox_msg(&pf->mbox); 2458 if (err) 2459 goto out; 2460 2461 /* tx */ 2462 del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox); 2463 if (!del_req) { 2464 err = -ENOMEM; 2465 goto out; 2466 } 2467 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX); 2468 del_req->entry = 2469 flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2470 err = otx2_sync_mbox_msg(&pf->mbox); 2471 2472 goto out; 2473 } 2474 2475 /* rx */ 2476 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2477 if (!req) { 2478 err = -ENOMEM; 2479 goto out; 2480 } 2481 2482 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX); 2483 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2484 req->packet.vlan_tci = htons(vlan); 2485 req->mask.vlan_tci = htons(VLAN_VID_MASK); 2486 /* af fills the destination mac addr */ 2487 eth_broadcast_addr((u8 *)&req->mask.dmac); 2488 req->features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_DMAC); 2489 req->channel = pf->hw.rx_chan_base; 2490 req->intf = NIX_INTF_RX; 2491 req->vf = vf + 1; 2492 req->op = NIX_RX_ACTION_DEFAULT; 2493 req->vtag0_valid = true; 2494 req->vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE7; 2495 req->set_cntr = 1; 2496 2497 err = otx2_sync_mbox_msg(&pf->mbox); 2498 if (err) 2499 goto out; 2500 2501 /* tx */ 2502 vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox); 2503 if (!vtag_req) { 2504 err = -ENOMEM; 2505 goto out; 2506 } 2507 2508 /* configure tx vtag params */ 2509 vtag_req->vtag_size = VTAGSIZE_T4; 2510 vtag_req->cfg_type = 0; /* tx vlan cfg */ 2511 vtag_req->tx.cfg_vtag0 = 1; 2512 vtag_req->tx.vtag0 = ((u64)ntohs(proto) << 16) | vlan; 2513 2514 err = otx2_sync_mbox_msg(&pf->mbox); 2515 if (err) 2516 goto out; 2517 2518 vtag_rsp = (struct nix_vtag_config_rsp *)otx2_mbox_get_rsp 2519 (&pf->mbox.mbox, 0, &vtag_req->hdr); 2520 if (IS_ERR(vtag_rsp)) { 2521 err = PTR_ERR(vtag_rsp); 2522 goto out; 2523 } 2524 config->tx_vtag_idx = vtag_rsp->vtag0_idx; 2525 2526 req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox); 2527 if (!req) { 2528 err = -ENOMEM; 2529 goto out; 2530 } 2531 2532 eth_zero_addr((u8 *)&req->mask.dmac); 2533 idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX); 2534 req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx]; 2535 req->features = BIT_ULL(NPC_DMAC); 2536 req->channel = pf->hw.tx_chan_base; 2537 req->intf = NIX_INTF_TX; 2538 req->vf = vf + 1; 2539 req->op = NIX_TX_ACTIONOP_UCAST_DEFAULT; 2540 req->vtag0_def = vtag_rsp->vtag0_idx; 2541 req->vtag0_op = VTAG_INSERT; 2542 req->set_cntr = 1; 2543 2544 err = otx2_sync_mbox_msg(&pf->mbox); 2545 out: 2546 config->vlan = vlan; 2547 mutex_unlock(&pf->mbox.lock); 2548 return err; 2549 } 2550 2551 static int otx2_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos, 2552 __be16 proto) 2553 { 2554 struct otx2_nic *pf = netdev_priv(netdev); 2555 struct pci_dev *pdev = pf->pdev; 2556 2557 if (!netif_running(netdev)) 2558 return -EAGAIN; 2559 2560 if (vf >= pci_num_vf(pdev)) 2561 return -EINVAL; 2562 2563 /* qos is currently unsupported */ 2564 if (vlan >= VLAN_N_VID || qos) 2565 return -EINVAL; 2566 2567 if (proto != htons(ETH_P_8021Q)) 2568 return -EPROTONOSUPPORT; 2569 2570 if (!(pf->flags & OTX2_FLAG_VF_VLAN_SUPPORT)) 2571 return -EOPNOTSUPP; 2572 2573 return otx2_do_set_vf_vlan(pf, vf, vlan, qos, proto); 2574 } 2575 2576 static int otx2_get_vf_config(struct net_device *netdev, int vf, 2577 struct ifla_vf_info *ivi) 2578 { 2579 struct otx2_nic *pf = netdev_priv(netdev); 2580 struct pci_dev *pdev = pf->pdev; 2581 struct otx2_vf_config *config; 2582 2583 if (!netif_running(netdev)) 2584 return -EAGAIN; 2585 2586 if (vf >= pci_num_vf(pdev)) 2587 return -EINVAL; 2588 2589 config = &pf->vf_configs[vf]; 2590 ivi->vf = vf; 2591 ether_addr_copy(ivi->mac, config->mac); 2592 ivi->vlan = config->vlan; 2593 ivi->trusted = config->trusted; 2594 2595 return 0; 2596 } 2597 2598 static int otx2_xdp_xmit_tx(struct otx2_nic *pf, struct xdp_frame *xdpf, 2599 int qidx) 2600 { 2601 struct page *page; 2602 u64 dma_addr; 2603 int err = 0; 2604 2605 dma_addr = otx2_dma_map_page(pf, virt_to_page(xdpf->data), 2606 offset_in_page(xdpf->data), xdpf->len, 2607 DMA_TO_DEVICE); 2608 if (dma_mapping_error(pf->dev, dma_addr)) 2609 return -ENOMEM; 2610 2611 err = otx2_xdp_sq_append_pkt(pf, dma_addr, xdpf->len, qidx); 2612 if (!err) { 2613 otx2_dma_unmap_page(pf, dma_addr, xdpf->len, DMA_TO_DEVICE); 2614 page = virt_to_page(xdpf->data); 2615 put_page(page); 2616 return -ENOMEM; 2617 } 2618 return 0; 2619 } 2620 2621 static int otx2_xdp_xmit(struct net_device *netdev, int n, 2622 struct xdp_frame **frames, u32 flags) 2623 { 2624 struct otx2_nic *pf = netdev_priv(netdev); 2625 int qidx = smp_processor_id(); 2626 struct otx2_snd_queue *sq; 2627 int drops = 0, i; 2628 2629 if (!netif_running(netdev)) 2630 return -ENETDOWN; 2631 2632 qidx += pf->hw.tx_queues; 2633 sq = pf->xdp_prog ? &pf->qset.sq[qidx] : NULL; 2634 2635 /* Abort xmit if xdp queue is not */ 2636 if (unlikely(!sq)) 2637 return -ENXIO; 2638 2639 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 2640 return -EINVAL; 2641 2642 for (i = 0; i < n; i++) { 2643 struct xdp_frame *xdpf = frames[i]; 2644 int err; 2645 2646 err = otx2_xdp_xmit_tx(pf, xdpf, qidx); 2647 if (err) 2648 drops++; 2649 } 2650 return n - drops; 2651 } 2652 2653 static int otx2_xdp_setup(struct otx2_nic *pf, struct bpf_prog *prog) 2654 { 2655 struct net_device *dev = pf->netdev; 2656 bool if_up = netif_running(pf->netdev); 2657 struct bpf_prog *old_prog; 2658 2659 if (prog && dev->mtu > MAX_XDP_MTU) { 2660 netdev_warn(dev, "Jumbo frames not yet supported with XDP\n"); 2661 return -EOPNOTSUPP; 2662 } 2663 2664 if (if_up) 2665 otx2_stop(pf->netdev); 2666 2667 old_prog = xchg(&pf->xdp_prog, prog); 2668 2669 if (old_prog) 2670 bpf_prog_put(old_prog); 2671 2672 if (pf->xdp_prog) 2673 bpf_prog_add(pf->xdp_prog, pf->hw.rx_queues - 1); 2674 2675 /* Network stack and XDP shared same rx queues. 2676 * Use separate tx queues for XDP and network stack. 2677 */ 2678 if (pf->xdp_prog) { 2679 pf->hw.xdp_queues = pf->hw.rx_queues; 2680 xdp_features_set_redirect_target(dev, false); 2681 } else { 2682 pf->hw.xdp_queues = 0; 2683 xdp_features_clear_redirect_target(dev); 2684 } 2685 2686 if (if_up) 2687 otx2_open(pf->netdev); 2688 2689 return 0; 2690 } 2691 2692 static int otx2_xdp(struct net_device *netdev, struct netdev_bpf *xdp) 2693 { 2694 struct otx2_nic *pf = netdev_priv(netdev); 2695 2696 switch (xdp->command) { 2697 case XDP_SETUP_PROG: 2698 return otx2_xdp_setup(pf, xdp->prog); 2699 default: 2700 return -EINVAL; 2701 } 2702 } 2703 2704 static int otx2_set_vf_permissions(struct otx2_nic *pf, int vf, 2705 int req_perm) 2706 { 2707 struct set_vf_perm *req; 2708 int rc; 2709 2710 mutex_lock(&pf->mbox.lock); 2711 req = otx2_mbox_alloc_msg_set_vf_perm(&pf->mbox); 2712 if (!req) { 2713 rc = -ENOMEM; 2714 goto out; 2715 } 2716 2717 /* Let AF reset VF permissions as sriov is disabled */ 2718 if (req_perm == OTX2_RESET_VF_PERM) { 2719 req->flags |= RESET_VF_PERM; 2720 } else if (req_perm == OTX2_TRUSTED_VF) { 2721 if (pf->vf_configs[vf].trusted) 2722 req->flags |= VF_TRUSTED; 2723 } 2724 2725 req->vf = vf; 2726 rc = otx2_sync_mbox_msg(&pf->mbox); 2727 out: 2728 mutex_unlock(&pf->mbox.lock); 2729 return rc; 2730 } 2731 2732 static int otx2_ndo_set_vf_trust(struct net_device *netdev, int vf, 2733 bool enable) 2734 { 2735 struct otx2_nic *pf = netdev_priv(netdev); 2736 struct pci_dev *pdev = pf->pdev; 2737 int rc; 2738 2739 if (vf >= pci_num_vf(pdev)) 2740 return -EINVAL; 2741 2742 if (pf->vf_configs[vf].trusted == enable) 2743 return 0; 2744 2745 pf->vf_configs[vf].trusted = enable; 2746 rc = otx2_set_vf_permissions(pf, vf, OTX2_TRUSTED_VF); 2747 2748 if (rc) { 2749 pf->vf_configs[vf].trusted = !enable; 2750 } else { 2751 netdev_info(pf->netdev, "VF %d is %strusted\n", 2752 vf, enable ? "" : "not "); 2753 otx2_set_rx_mode(netdev); 2754 } 2755 2756 return rc; 2757 } 2758 2759 static const struct net_device_ops otx2_netdev_ops = { 2760 .ndo_open = otx2_open, 2761 .ndo_stop = otx2_stop, 2762 .ndo_start_xmit = otx2_xmit, 2763 .ndo_select_queue = otx2_select_queue, 2764 .ndo_fix_features = otx2_fix_features, 2765 .ndo_set_mac_address = otx2_set_mac_address, 2766 .ndo_change_mtu = otx2_change_mtu, 2767 .ndo_set_rx_mode = otx2_set_rx_mode, 2768 .ndo_set_features = otx2_set_features, 2769 .ndo_tx_timeout = otx2_tx_timeout, 2770 .ndo_get_stats64 = otx2_get_stats64, 2771 .ndo_eth_ioctl = otx2_ioctl, 2772 .ndo_set_vf_mac = otx2_set_vf_mac, 2773 .ndo_set_vf_vlan = otx2_set_vf_vlan, 2774 .ndo_get_vf_config = otx2_get_vf_config, 2775 .ndo_bpf = otx2_xdp, 2776 .ndo_xdp_xmit = otx2_xdp_xmit, 2777 .ndo_setup_tc = otx2_setup_tc, 2778 .ndo_set_vf_trust = otx2_ndo_set_vf_trust, 2779 }; 2780 2781 static int otx2_wq_init(struct otx2_nic *pf) 2782 { 2783 pf->otx2_wq = create_singlethread_workqueue("otx2_wq"); 2784 if (!pf->otx2_wq) 2785 return -ENOMEM; 2786 2787 INIT_WORK(&pf->rx_mode_work, otx2_rx_mode_wrk_handler); 2788 INIT_WORK(&pf->reset_task, otx2_reset_task); 2789 return 0; 2790 } 2791 2792 static int otx2_check_pf_usable(struct otx2_nic *nic) 2793 { 2794 u64 rev; 2795 2796 rev = otx2_read64(nic, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_RVUM)); 2797 rev = (rev >> 12) & 0xFF; 2798 /* Check if AF has setup revision for RVUM block, 2799 * otherwise this driver probe should be deferred 2800 * until AF driver comes up. 2801 */ 2802 if (!rev) { 2803 dev_warn(nic->dev, 2804 "AF is not initialized, deferring probe\n"); 2805 return -EPROBE_DEFER; 2806 } 2807 return 0; 2808 } 2809 2810 static int otx2_realloc_msix_vectors(struct otx2_nic *pf) 2811 { 2812 struct otx2_hw *hw = &pf->hw; 2813 int num_vec, err; 2814 2815 /* NPA interrupts are inot registered, so alloc only 2816 * upto NIX vector offset. 2817 */ 2818 num_vec = hw->nix_msixoff; 2819 num_vec += NIX_LF_CINT_VEC_START + hw->max_queues; 2820 2821 otx2_disable_mbox_intr(pf); 2822 pci_free_irq_vectors(hw->pdev); 2823 err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX); 2824 if (err < 0) { 2825 dev_err(pf->dev, "%s: Failed to realloc %d IRQ vectors\n", 2826 __func__, num_vec); 2827 return err; 2828 } 2829 2830 return otx2_register_mbox_intr(pf, false); 2831 } 2832 2833 static int otx2_sriov_vfcfg_init(struct otx2_nic *pf) 2834 { 2835 int i; 2836 2837 pf->vf_configs = devm_kcalloc(pf->dev, pf->total_vfs, 2838 sizeof(struct otx2_vf_config), 2839 GFP_KERNEL); 2840 if (!pf->vf_configs) 2841 return -ENOMEM; 2842 2843 for (i = 0; i < pf->total_vfs; i++) { 2844 pf->vf_configs[i].pf = pf; 2845 pf->vf_configs[i].intf_down = true; 2846 pf->vf_configs[i].trusted = false; 2847 INIT_DELAYED_WORK(&pf->vf_configs[i].link_event_work, 2848 otx2_vf_link_event_task); 2849 } 2850 2851 return 0; 2852 } 2853 2854 static void otx2_sriov_vfcfg_cleanup(struct otx2_nic *pf) 2855 { 2856 int i; 2857 2858 if (!pf->vf_configs) 2859 return; 2860 2861 for (i = 0; i < pf->total_vfs; i++) { 2862 cancel_delayed_work_sync(&pf->vf_configs[i].link_event_work); 2863 otx2_set_vf_permissions(pf, i, OTX2_RESET_VF_PERM); 2864 } 2865 } 2866 2867 static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2868 { 2869 struct device *dev = &pdev->dev; 2870 int err, qcount, qos_txqs; 2871 struct net_device *netdev; 2872 struct otx2_nic *pf; 2873 struct otx2_hw *hw; 2874 int num_vec; 2875 2876 err = pcim_enable_device(pdev); 2877 if (err) { 2878 dev_err(dev, "Failed to enable PCI device\n"); 2879 return err; 2880 } 2881 2882 err = pci_request_regions(pdev, DRV_NAME); 2883 if (err) { 2884 dev_err(dev, "PCI request regions failed 0x%x\n", err); 2885 return err; 2886 } 2887 2888 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); 2889 if (err) { 2890 dev_err(dev, "DMA mask config failed, abort\n"); 2891 goto err_release_regions; 2892 } 2893 2894 pci_set_master(pdev); 2895 2896 /* Set number of queues */ 2897 qcount = min_t(int, num_online_cpus(), OTX2_MAX_CQ_CNT); 2898 qos_txqs = min_t(int, qcount, OTX2_QOS_MAX_LEAF_NODES); 2899 2900 netdev = alloc_etherdev_mqs(sizeof(*pf), qcount + qos_txqs, qcount); 2901 if (!netdev) { 2902 err = -ENOMEM; 2903 goto err_release_regions; 2904 } 2905 2906 pci_set_drvdata(pdev, netdev); 2907 SET_NETDEV_DEV(netdev, &pdev->dev); 2908 pf = netdev_priv(netdev); 2909 pf->netdev = netdev; 2910 pf->pdev = pdev; 2911 pf->dev = dev; 2912 pf->total_vfs = pci_sriov_get_totalvfs(pdev); 2913 pf->flags |= OTX2_FLAG_INTF_DOWN; 2914 2915 hw = &pf->hw; 2916 hw->pdev = pdev; 2917 hw->rx_queues = qcount; 2918 hw->tx_queues = qcount; 2919 hw->non_qos_queues = qcount; 2920 hw->max_queues = qcount; 2921 hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN; 2922 /* Use CQE of 128 byte descriptor size by default */ 2923 hw->xqe_size = 128; 2924 2925 num_vec = pci_msix_vec_count(pdev); 2926 hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE, 2927 GFP_KERNEL); 2928 if (!hw->irq_name) { 2929 err = -ENOMEM; 2930 goto err_free_netdev; 2931 } 2932 2933 hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec, 2934 sizeof(cpumask_var_t), GFP_KERNEL); 2935 if (!hw->affinity_mask) { 2936 err = -ENOMEM; 2937 goto err_free_netdev; 2938 } 2939 2940 /* Map CSRs */ 2941 pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); 2942 if (!pf->reg_base) { 2943 dev_err(dev, "Unable to map physical function CSRs, aborting\n"); 2944 err = -ENOMEM; 2945 goto err_free_netdev; 2946 } 2947 2948 err = otx2_check_pf_usable(pf); 2949 if (err) 2950 goto err_free_netdev; 2951 2952 err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT, 2953 RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX); 2954 if (err < 0) { 2955 dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n", 2956 __func__, num_vec); 2957 goto err_free_netdev; 2958 } 2959 2960 otx2_setup_dev_hw_settings(pf); 2961 2962 /* Init PF <=> AF mailbox stuff */ 2963 err = otx2_pfaf_mbox_init(pf); 2964 if (err) 2965 goto err_free_irq_vectors; 2966 2967 /* Register mailbox interrupt */ 2968 err = otx2_register_mbox_intr(pf, true); 2969 if (err) 2970 goto err_mbox_destroy; 2971 2972 /* Request AF to attach NPA and NIX LFs to this PF. 2973 * NIX and NPA LFs are needed for this PF to function as a NIC. 2974 */ 2975 err = otx2_attach_npa_nix(pf); 2976 if (err) 2977 goto err_disable_mbox_intr; 2978 2979 err = otx2_realloc_msix_vectors(pf); 2980 if (err) 2981 goto err_detach_rsrc; 2982 2983 err = otx2_set_real_num_queues(netdev, hw->tx_queues, hw->rx_queues); 2984 if (err) 2985 goto err_detach_rsrc; 2986 2987 err = cn10k_lmtst_init(pf); 2988 if (err) 2989 goto err_detach_rsrc; 2990 2991 /* Assign default mac address */ 2992 otx2_get_mac_from_af(netdev); 2993 2994 /* Don't check for error. Proceed without ptp */ 2995 otx2_ptp_init(pf); 2996 2997 /* NPA's pool is a stack to which SW frees buffer pointers via Aura. 2998 * HW allocates buffer pointer from stack and uses it for DMA'ing 2999 * ingress packet. In some scenarios HW can free back allocated buffer 3000 * pointers to pool. This makes it impossible for SW to maintain a 3001 * parallel list where physical addresses of buffer pointers (IOVAs) 3002 * given to HW can be saved for later reference. 3003 * 3004 * So the only way to convert Rx packet's buffer address is to use 3005 * IOMMU's iova_to_phys() handler which translates the address by 3006 * walking through the translation tables. 3007 */ 3008 pf->iommu_domain = iommu_get_domain_for_dev(dev); 3009 3010 netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 3011 NETIF_F_IPV6_CSUM | NETIF_F_RXHASH | 3012 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | 3013 NETIF_F_GSO_UDP_L4); 3014 netdev->features |= netdev->hw_features; 3015 3016 err = otx2_mcam_flow_init(pf); 3017 if (err) 3018 goto err_ptp_destroy; 3019 3020 err = cn10k_mcs_init(pf); 3021 if (err) 3022 goto err_del_mcam_entries; 3023 3024 if (pf->flags & OTX2_FLAG_NTUPLE_SUPPORT) 3025 netdev->hw_features |= NETIF_F_NTUPLE; 3026 3027 if (pf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT) 3028 netdev->priv_flags |= IFF_UNICAST_FLT; 3029 3030 /* Support TSO on tag interface */ 3031 netdev->vlan_features |= netdev->features; 3032 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | 3033 NETIF_F_HW_VLAN_STAG_TX; 3034 if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) 3035 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX | 3036 NETIF_F_HW_VLAN_STAG_RX; 3037 netdev->features |= netdev->hw_features; 3038 3039 /* HW supports tc offload but mutually exclusive with n-tuple filters */ 3040 if (pf->flags & OTX2_FLAG_TC_FLOWER_SUPPORT) 3041 netdev->hw_features |= NETIF_F_HW_TC; 3042 3043 netdev->hw_features |= NETIF_F_LOOPBACK | NETIF_F_RXALL; 3044 3045 netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS); 3046 netdev->watchdog_timeo = OTX2_TX_TIMEOUT; 3047 3048 netdev->netdev_ops = &otx2_netdev_ops; 3049 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT; 3050 3051 netdev->min_mtu = OTX2_MIN_MTU; 3052 netdev->max_mtu = otx2_get_max_mtu(pf); 3053 3054 /* reset CGX/RPM MAC stats */ 3055 otx2_reset_mac_stats(pf); 3056 3057 err = register_netdev(netdev); 3058 if (err) { 3059 dev_err(dev, "Failed to register netdevice\n"); 3060 goto err_mcs_free; 3061 } 3062 3063 err = otx2_wq_init(pf); 3064 if (err) 3065 goto err_unreg_netdev; 3066 3067 otx2_set_ethtool_ops(netdev); 3068 3069 err = otx2_init_tc(pf); 3070 if (err) 3071 goto err_mcam_flow_del; 3072 3073 err = otx2_register_dl(pf); 3074 if (err) 3075 goto err_mcam_flow_del; 3076 3077 /* Initialize SR-IOV resources */ 3078 err = otx2_sriov_vfcfg_init(pf); 3079 if (err) 3080 goto err_pf_sriov_init; 3081 3082 /* Enable link notifications */ 3083 otx2_cgx_config_linkevents(pf, true); 3084 3085 #ifdef CONFIG_DCB 3086 err = otx2_dcbnl_set_ops(netdev); 3087 if (err) 3088 goto err_pf_sriov_init; 3089 #endif 3090 3091 otx2_qos_init(pf, qos_txqs); 3092 3093 return 0; 3094 3095 err_pf_sriov_init: 3096 otx2_shutdown_tc(pf); 3097 err_mcam_flow_del: 3098 otx2_mcam_flow_del(pf); 3099 err_unreg_netdev: 3100 unregister_netdev(netdev); 3101 err_mcs_free: 3102 cn10k_mcs_free(pf); 3103 err_del_mcam_entries: 3104 otx2_mcam_flow_del(pf); 3105 err_ptp_destroy: 3106 otx2_ptp_destroy(pf); 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 err_free_netdev: 3120 pci_set_drvdata(pdev, NULL); 3121 free_netdev(netdev); 3122 err_release_regions: 3123 pci_release_regions(pdev); 3124 return err; 3125 } 3126 3127 static void otx2_vf_link_event_task(struct work_struct *work) 3128 { 3129 struct otx2_vf_config *config; 3130 struct cgx_link_info_msg *req; 3131 struct mbox_msghdr *msghdr; 3132 struct delayed_work *dwork; 3133 struct otx2_nic *pf; 3134 int vf_idx; 3135 3136 config = container_of(work, struct otx2_vf_config, 3137 link_event_work.work); 3138 vf_idx = config - config->pf->vf_configs; 3139 pf = config->pf; 3140 3141 if (config->intf_down) 3142 return; 3143 3144 mutex_lock(&pf->mbox.lock); 3145 3146 dwork = &config->link_event_work; 3147 3148 if (!otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx)) { 3149 schedule_delayed_work(dwork, msecs_to_jiffies(100)); 3150 mutex_unlock(&pf->mbox.lock); 3151 return; 3152 } 3153 3154 msghdr = otx2_mbox_alloc_msg_rsp(&pf->mbox_pfvf[0].mbox_up, vf_idx, 3155 sizeof(*req), sizeof(struct msg_rsp)); 3156 if (!msghdr) { 3157 dev_err(pf->dev, "Failed to create VF%d link event\n", vf_idx); 3158 mutex_unlock(&pf->mbox.lock); 3159 return; 3160 } 3161 3162 req = (struct cgx_link_info_msg *)msghdr; 3163 req->hdr.id = MBOX_MSG_CGX_LINK_EVENT; 3164 req->hdr.sig = OTX2_MBOX_REQ_SIG; 3165 memcpy(&req->link_info, &pf->linfo, sizeof(req->link_info)); 3166 3167 otx2_mbox_wait_for_zero(&pf->mbox_pfvf[0].mbox_up, vf_idx); 3168 3169 otx2_sync_mbox_up_msg(&pf->mbox_pfvf[0], vf_idx); 3170 3171 mutex_unlock(&pf->mbox.lock); 3172 } 3173 3174 static int otx2_sriov_enable(struct pci_dev *pdev, int numvfs) 3175 { 3176 struct net_device *netdev = pci_get_drvdata(pdev); 3177 struct otx2_nic *pf = netdev_priv(netdev); 3178 int ret; 3179 3180 /* Init PF <=> VF mailbox stuff */ 3181 ret = otx2_pfvf_mbox_init(pf, numvfs); 3182 if (ret) 3183 return ret; 3184 3185 ret = otx2_register_pfvf_mbox_intr(pf, numvfs); 3186 if (ret) 3187 goto free_mbox; 3188 3189 ret = otx2_pf_flr_init(pf, numvfs); 3190 if (ret) 3191 goto free_intr; 3192 3193 ret = otx2_register_flr_me_intr(pf, numvfs); 3194 if (ret) 3195 goto free_flr; 3196 3197 ret = pci_enable_sriov(pdev, numvfs); 3198 if (ret) 3199 goto free_flr_intr; 3200 3201 return numvfs; 3202 free_flr_intr: 3203 otx2_disable_flr_me_intr(pf); 3204 free_flr: 3205 otx2_flr_wq_destroy(pf); 3206 free_intr: 3207 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3208 free_mbox: 3209 otx2_pfvf_mbox_destroy(pf); 3210 return ret; 3211 } 3212 3213 static int otx2_sriov_disable(struct pci_dev *pdev) 3214 { 3215 struct net_device *netdev = pci_get_drvdata(pdev); 3216 struct otx2_nic *pf = netdev_priv(netdev); 3217 int numvfs = pci_num_vf(pdev); 3218 3219 if (!numvfs) 3220 return 0; 3221 3222 pci_disable_sriov(pdev); 3223 3224 otx2_disable_flr_me_intr(pf); 3225 otx2_flr_wq_destroy(pf); 3226 otx2_disable_pfvf_mbox_intr(pf, numvfs); 3227 otx2_pfvf_mbox_destroy(pf); 3228 3229 return 0; 3230 } 3231 3232 static int otx2_sriov_configure(struct pci_dev *pdev, int numvfs) 3233 { 3234 if (numvfs == 0) 3235 return otx2_sriov_disable(pdev); 3236 else 3237 return otx2_sriov_enable(pdev, numvfs); 3238 } 3239 3240 static void otx2_remove(struct pci_dev *pdev) 3241 { 3242 struct net_device *netdev = pci_get_drvdata(pdev); 3243 struct otx2_nic *pf; 3244 3245 if (!netdev) 3246 return; 3247 3248 pf = netdev_priv(netdev); 3249 3250 pf->flags |= OTX2_FLAG_PF_SHUTDOWN; 3251 3252 if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) 3253 otx2_config_hw_tx_tstamp(pf, false); 3254 if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) 3255 otx2_config_hw_rx_tstamp(pf, false); 3256 3257 /* Disable 802.3x pause frames */ 3258 if (pf->flags & OTX2_FLAG_RX_PAUSE_ENABLED || 3259 (pf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) { 3260 pf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED; 3261 pf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED; 3262 otx2_config_pause_frm(pf); 3263 } 3264 3265 #ifdef CONFIG_DCB 3266 /* Disable PFC config */ 3267 if (pf->pfc_en) { 3268 pf->pfc_en = 0; 3269 otx2_config_priority_flow_ctrl(pf); 3270 } 3271 #endif 3272 cancel_work_sync(&pf->reset_task); 3273 /* Disable link notifications */ 3274 otx2_cgx_config_linkevents(pf, false); 3275 3276 otx2_unregister_dl(pf); 3277 unregister_netdev(netdev); 3278 cn10k_mcs_free(pf); 3279 otx2_sriov_disable(pf->pdev); 3280 otx2_sriov_vfcfg_cleanup(pf); 3281 if (pf->otx2_wq) 3282 destroy_workqueue(pf->otx2_wq); 3283 3284 otx2_ptp_destroy(pf); 3285 otx2_mcam_flow_del(pf); 3286 otx2_shutdown_tc(pf); 3287 otx2_shutdown_qos(pf); 3288 otx2_detach_resources(&pf->mbox); 3289 if (pf->hw.lmt_info) 3290 free_percpu(pf->hw.lmt_info); 3291 if (test_bit(CN10K_LMTST, &pf->hw.cap_flag)) 3292 qmem_free(pf->dev, pf->dync_lmt); 3293 otx2_disable_mbox_intr(pf); 3294 otx2_pfaf_mbox_destroy(pf); 3295 pci_free_irq_vectors(pf->pdev); 3296 pci_set_drvdata(pdev, NULL); 3297 free_netdev(netdev); 3298 3299 pci_release_regions(pdev); 3300 } 3301 3302 static struct pci_driver otx2_pf_driver = { 3303 .name = DRV_NAME, 3304 .id_table = otx2_pf_id_table, 3305 .probe = otx2_probe, 3306 .shutdown = otx2_remove, 3307 .remove = otx2_remove, 3308 .sriov_configure = otx2_sriov_configure 3309 }; 3310 3311 static int __init otx2_rvupf_init_module(void) 3312 { 3313 pr_info("%s: %s\n", DRV_NAME, DRV_STRING); 3314 3315 return pci_register_driver(&otx2_pf_driver); 3316 } 3317 3318 static void __exit otx2_rvupf_cleanup_module(void) 3319 { 3320 pci_unregister_driver(&otx2_pf_driver); 3321 } 3322 3323 module_init(otx2_rvupf_init_module); 3324 module_exit(otx2_rvupf_cleanup_module); 3325