1 /* 2 * Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 34 35 #include <linux/module.h> 36 #include <linux/init.h> 37 #include <linux/pci.h> 38 #include <linux/dma-mapping.h> 39 #include <linux/netdevice.h> 40 #include <linux/etherdevice.h> 41 #include <linux/if_vlan.h> 42 #include <linux/mdio.h> 43 #include <linux/sockios.h> 44 #include <linux/workqueue.h> 45 #include <linux/proc_fs.h> 46 #include <linux/rtnetlink.h> 47 #include <linux/firmware.h> 48 #include <linux/log2.h> 49 #include <linux/stringify.h> 50 #include <linux/sched.h> 51 #include <linux/slab.h> 52 #include <linux/uaccess.h> 53 #include <linux/nospec.h> 54 55 #include "common.h" 56 #include "cxgb3_ioctl.h" 57 #include "regs.h" 58 #include "cxgb3_offload.h" 59 #include "version.h" 60 61 #include "cxgb3_ctl_defs.h" 62 #include "t3_cpl.h" 63 #include "firmware_exports.h" 64 65 enum { 66 MAX_TXQ_ENTRIES = 16384, 67 MAX_CTRL_TXQ_ENTRIES = 1024, 68 MAX_RSPQ_ENTRIES = 16384, 69 MAX_RX_BUFFERS = 16384, 70 MAX_RX_JUMBO_BUFFERS = 16384, 71 MIN_TXQ_ENTRIES = 4, 72 MIN_CTRL_TXQ_ENTRIES = 4, 73 MIN_RSPQ_ENTRIES = 32, 74 MIN_FL_ENTRIES = 32 75 }; 76 77 #define PORT_MASK ((1 << MAX_NPORTS) - 1) 78 79 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \ 80 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\ 81 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR) 82 83 #define EEPROM_MAGIC 0x38E2F10C 84 85 #define CH_DEVICE(devid, idx) \ 86 { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, PCI_ANY_ID, 0, 0, idx } 87 88 static const struct pci_device_id cxgb3_pci_tbl[] = { 89 CH_DEVICE(0x20, 0), /* PE9000 */ 90 CH_DEVICE(0x21, 1), /* T302E */ 91 CH_DEVICE(0x22, 2), /* T310E */ 92 CH_DEVICE(0x23, 3), /* T320X */ 93 CH_DEVICE(0x24, 1), /* T302X */ 94 CH_DEVICE(0x25, 3), /* T320E */ 95 CH_DEVICE(0x26, 2), /* T310X */ 96 CH_DEVICE(0x30, 2), /* T3B10 */ 97 CH_DEVICE(0x31, 3), /* T3B20 */ 98 CH_DEVICE(0x32, 1), /* T3B02 */ 99 CH_DEVICE(0x35, 6), /* T3C20-derived T3C10 */ 100 CH_DEVICE(0x36, 3), /* S320E-CR */ 101 CH_DEVICE(0x37, 7), /* N320E-G2 */ 102 {0,} 103 }; 104 105 MODULE_DESCRIPTION(DRV_DESC); 106 MODULE_AUTHOR("Chelsio Communications"); 107 MODULE_LICENSE("Dual BSD/GPL"); 108 MODULE_DEVICE_TABLE(pci, cxgb3_pci_tbl); 109 110 static int dflt_msg_enable = DFLT_MSG_ENABLE; 111 112 module_param(dflt_msg_enable, int, 0644); 113 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T3 default message enable bitmap"); 114 115 /* 116 * The driver uses the best interrupt scheme available on a platform in the 117 * order MSI-X, MSI, legacy pin interrupts. This parameter determines which 118 * of these schemes the driver may consider as follows: 119 * 120 * msi = 2: choose from among all three options 121 * msi = 1: only consider MSI and pin interrupts 122 * msi = 0: force pin interrupts 123 */ 124 static int msi = 2; 125 126 module_param(msi, int, 0644); 127 MODULE_PARM_DESC(msi, "whether to use MSI or MSI-X"); 128 129 /* 130 * The driver enables offload as a default. 131 * To disable it, use ofld_disable = 1. 132 */ 133 134 static int ofld_disable = 0; 135 136 module_param(ofld_disable, int, 0644); 137 MODULE_PARM_DESC(ofld_disable, "whether to enable offload at init time or not"); 138 139 /* 140 * We have work elements that we need to cancel when an interface is taken 141 * down. Normally the work elements would be executed by keventd but that 142 * can deadlock because of linkwatch. If our close method takes the rtnl 143 * lock and linkwatch is ahead of our work elements in keventd, linkwatch 144 * will block keventd as it needs the rtnl lock, and we'll deadlock waiting 145 * for our work to complete. Get our own work queue to solve this. 146 */ 147 struct workqueue_struct *cxgb3_wq; 148 149 /** 150 * link_report - show link status and link speed/duplex 151 * @dev: the port whose settings are to be reported 152 * 153 * Shows the link status, speed, and duplex of a port. 154 */ 155 static void link_report(struct net_device *dev) 156 { 157 if (!netif_carrier_ok(dev)) 158 netdev_info(dev, "link down\n"); 159 else { 160 const char *s = "10Mbps"; 161 const struct port_info *p = netdev_priv(dev); 162 163 switch (p->link_config.speed) { 164 case SPEED_10000: 165 s = "10Gbps"; 166 break; 167 case SPEED_1000: 168 s = "1000Mbps"; 169 break; 170 case SPEED_100: 171 s = "100Mbps"; 172 break; 173 } 174 175 netdev_info(dev, "link up, %s, %s-duplex\n", 176 s, p->link_config.duplex == DUPLEX_FULL 177 ? "full" : "half"); 178 } 179 } 180 181 static void enable_tx_fifo_drain(struct adapter *adapter, 182 struct port_info *pi) 183 { 184 t3_set_reg_field(adapter, A_XGM_TXFIFO_CFG + pi->mac.offset, 0, 185 F_ENDROPPKT); 186 t3_write_reg(adapter, A_XGM_RX_CTRL + pi->mac.offset, 0); 187 t3_write_reg(adapter, A_XGM_TX_CTRL + pi->mac.offset, F_TXEN); 188 t3_write_reg(adapter, A_XGM_RX_CTRL + pi->mac.offset, F_RXEN); 189 } 190 191 static void disable_tx_fifo_drain(struct adapter *adapter, 192 struct port_info *pi) 193 { 194 t3_set_reg_field(adapter, A_XGM_TXFIFO_CFG + pi->mac.offset, 195 F_ENDROPPKT, 0); 196 } 197 198 void t3_os_link_fault(struct adapter *adap, int port_id, int state) 199 { 200 struct net_device *dev = adap->port[port_id]; 201 struct port_info *pi = netdev_priv(dev); 202 203 if (state == netif_carrier_ok(dev)) 204 return; 205 206 if (state) { 207 struct cmac *mac = &pi->mac; 208 209 netif_carrier_on(dev); 210 211 disable_tx_fifo_drain(adap, pi); 212 213 /* Clear local faults */ 214 t3_xgm_intr_disable(adap, pi->port_id); 215 t3_read_reg(adap, A_XGM_INT_STATUS + 216 pi->mac.offset); 217 t3_write_reg(adap, 218 A_XGM_INT_CAUSE + pi->mac.offset, 219 F_XGM_INT); 220 221 t3_set_reg_field(adap, 222 A_XGM_INT_ENABLE + 223 pi->mac.offset, 224 F_XGM_INT, F_XGM_INT); 225 t3_xgm_intr_enable(adap, pi->port_id); 226 227 t3_mac_enable(mac, MAC_DIRECTION_TX); 228 } else { 229 netif_carrier_off(dev); 230 231 /* Flush TX FIFO */ 232 enable_tx_fifo_drain(adap, pi); 233 } 234 link_report(dev); 235 } 236 237 /** 238 * t3_os_link_changed - handle link status changes 239 * @adapter: the adapter associated with the link change 240 * @port_id: the port index whose limk status has changed 241 * @link_stat: the new status of the link 242 * @speed: the new speed setting 243 * @duplex: the new duplex setting 244 * @pause: the new flow-control setting 245 * 246 * This is the OS-dependent handler for link status changes. The OS 247 * neutral handler takes care of most of the processing for these events, 248 * then calls this handler for any OS-specific processing. 249 */ 250 void t3_os_link_changed(struct adapter *adapter, int port_id, int link_stat, 251 int speed, int duplex, int pause) 252 { 253 struct net_device *dev = adapter->port[port_id]; 254 struct port_info *pi = netdev_priv(dev); 255 struct cmac *mac = &pi->mac; 256 257 /* Skip changes from disabled ports. */ 258 if (!netif_running(dev)) 259 return; 260 261 if (link_stat != netif_carrier_ok(dev)) { 262 if (link_stat) { 263 disable_tx_fifo_drain(adapter, pi); 264 265 t3_mac_enable(mac, MAC_DIRECTION_RX); 266 267 /* Clear local faults */ 268 t3_xgm_intr_disable(adapter, pi->port_id); 269 t3_read_reg(adapter, A_XGM_INT_STATUS + 270 pi->mac.offset); 271 t3_write_reg(adapter, 272 A_XGM_INT_CAUSE + pi->mac.offset, 273 F_XGM_INT); 274 275 t3_set_reg_field(adapter, 276 A_XGM_INT_ENABLE + pi->mac.offset, 277 F_XGM_INT, F_XGM_INT); 278 t3_xgm_intr_enable(adapter, pi->port_id); 279 280 netif_carrier_on(dev); 281 } else { 282 netif_carrier_off(dev); 283 284 t3_xgm_intr_disable(adapter, pi->port_id); 285 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 286 t3_set_reg_field(adapter, 287 A_XGM_INT_ENABLE + pi->mac.offset, 288 F_XGM_INT, 0); 289 290 if (is_10G(adapter)) 291 pi->phy.ops->power_down(&pi->phy, 1); 292 293 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 294 t3_mac_disable(mac, MAC_DIRECTION_RX); 295 t3_link_start(&pi->phy, mac, &pi->link_config); 296 297 /* Flush TX FIFO */ 298 enable_tx_fifo_drain(adapter, pi); 299 } 300 301 link_report(dev); 302 } 303 } 304 305 /** 306 * t3_os_phymod_changed - handle PHY module changes 307 * @adap: the adapter associated with the link change 308 * @port_id: the port index whose limk status has changed 309 * 310 * This is the OS-dependent handler for PHY module changes. It is 311 * invoked when a PHY module is removed or inserted for any OS-specific 312 * processing. 313 */ 314 void t3_os_phymod_changed(struct adapter *adap, int port_id) 315 { 316 static const char *mod_str[] = { 317 NULL, "SR", "LR", "LRM", "TWINAX", "TWINAX", "unknown" 318 }; 319 320 const struct net_device *dev = adap->port[port_id]; 321 const struct port_info *pi = netdev_priv(dev); 322 323 if (pi->phy.modtype == phy_modtype_none) 324 netdev_info(dev, "PHY module unplugged\n"); 325 else 326 netdev_info(dev, "%s PHY module inserted\n", 327 mod_str[pi->phy.modtype]); 328 } 329 330 static void cxgb_set_rxmode(struct net_device *dev) 331 { 332 struct port_info *pi = netdev_priv(dev); 333 334 t3_mac_set_rx_mode(&pi->mac, dev); 335 } 336 337 /** 338 * link_start - enable a port 339 * @dev: the device to enable 340 * 341 * Performs the MAC and PHY actions needed to enable a port. 342 */ 343 static void link_start(struct net_device *dev) 344 { 345 struct port_info *pi = netdev_priv(dev); 346 struct cmac *mac = &pi->mac; 347 348 t3_mac_reset(mac); 349 t3_mac_set_num_ucast(mac, MAX_MAC_IDX); 350 t3_mac_set_mtu(mac, dev->mtu); 351 t3_mac_set_address(mac, LAN_MAC_IDX, dev->dev_addr); 352 t3_mac_set_address(mac, SAN_MAC_IDX, pi->iscsic.mac_addr); 353 t3_mac_set_rx_mode(mac, dev); 354 t3_link_start(&pi->phy, mac, &pi->link_config); 355 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); 356 } 357 358 static inline void cxgb_disable_msi(struct adapter *adapter) 359 { 360 if (adapter->flags & USING_MSIX) { 361 pci_disable_msix(adapter->pdev); 362 adapter->flags &= ~USING_MSIX; 363 } else if (adapter->flags & USING_MSI) { 364 pci_disable_msi(adapter->pdev); 365 adapter->flags &= ~USING_MSI; 366 } 367 } 368 369 /* 370 * Interrupt handler for asynchronous events used with MSI-X. 371 */ 372 static irqreturn_t t3_async_intr_handler(int irq, void *cookie) 373 { 374 t3_slow_intr_handler(cookie); 375 return IRQ_HANDLED; 376 } 377 378 /* 379 * Name the MSI-X interrupts. 380 */ 381 static void name_msix_vecs(struct adapter *adap) 382 { 383 int i, j, msi_idx = 1, n = sizeof(adap->msix_info[0].desc) - 1; 384 385 snprintf(adap->msix_info[0].desc, n, "%s", adap->name); 386 adap->msix_info[0].desc[n] = 0; 387 388 for_each_port(adap, j) { 389 struct net_device *d = adap->port[j]; 390 const struct port_info *pi = netdev_priv(d); 391 392 for (i = 0; i < pi->nqsets; i++, msi_idx++) { 393 snprintf(adap->msix_info[msi_idx].desc, n, 394 "%s-%d", d->name, pi->first_qset + i); 395 adap->msix_info[msi_idx].desc[n] = 0; 396 } 397 } 398 } 399 400 static int request_msix_data_irqs(struct adapter *adap) 401 { 402 int i, j, err, qidx = 0; 403 404 for_each_port(adap, i) { 405 int nqsets = adap2pinfo(adap, i)->nqsets; 406 407 for (j = 0; j < nqsets; ++j) { 408 err = request_irq(adap->msix_info[qidx + 1].vec, 409 t3_intr_handler(adap, 410 adap->sge.qs[qidx]. 411 rspq.polling), 0, 412 adap->msix_info[qidx + 1].desc, 413 &adap->sge.qs[qidx]); 414 if (err) { 415 while (--qidx >= 0) 416 free_irq(adap->msix_info[qidx + 1].vec, 417 &adap->sge.qs[qidx]); 418 return err; 419 } 420 qidx++; 421 } 422 } 423 return 0; 424 } 425 426 static void free_irq_resources(struct adapter *adapter) 427 { 428 if (adapter->flags & USING_MSIX) { 429 int i, n = 0; 430 431 free_irq(adapter->msix_info[0].vec, adapter); 432 for_each_port(adapter, i) 433 n += adap2pinfo(adapter, i)->nqsets; 434 435 for (i = 0; i < n; ++i) 436 free_irq(adapter->msix_info[i + 1].vec, 437 &adapter->sge.qs[i]); 438 } else 439 free_irq(adapter->pdev->irq, adapter); 440 } 441 442 static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt, 443 unsigned long n) 444 { 445 int attempts = 10; 446 447 while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) { 448 if (!--attempts) 449 return -ETIMEDOUT; 450 msleep(10); 451 } 452 return 0; 453 } 454 455 static int init_tp_parity(struct adapter *adap) 456 { 457 int i; 458 struct sk_buff *skb; 459 struct cpl_set_tcb_field *greq; 460 unsigned long cnt = adap->sge.qs[0].rspq.offload_pkts; 461 462 t3_tp_set_offload_mode(adap, 1); 463 464 for (i = 0; i < 16; i++) { 465 struct cpl_smt_write_req *req; 466 467 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 468 if (!skb) 469 skb = adap->nofail_skb; 470 if (!skb) 471 goto alloc_skb_fail; 472 473 req = __skb_put_zero(skb, sizeof(*req)); 474 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 475 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i)); 476 req->mtu_idx = NMTUS - 1; 477 req->iff = i; 478 t3_mgmt_tx(adap, skb); 479 if (skb == adap->nofail_skb) { 480 await_mgmt_replies(adap, cnt, i + 1); 481 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 482 if (!adap->nofail_skb) 483 goto alloc_skb_fail; 484 } 485 } 486 487 for (i = 0; i < 2048; i++) { 488 struct cpl_l2t_write_req *req; 489 490 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 491 if (!skb) 492 skb = adap->nofail_skb; 493 if (!skb) 494 goto alloc_skb_fail; 495 496 req = __skb_put_zero(skb, sizeof(*req)); 497 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 498 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i)); 499 req->params = htonl(V_L2T_W_IDX(i)); 500 t3_mgmt_tx(adap, skb); 501 if (skb == adap->nofail_skb) { 502 await_mgmt_replies(adap, cnt, 16 + i + 1); 503 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 504 if (!adap->nofail_skb) 505 goto alloc_skb_fail; 506 } 507 } 508 509 for (i = 0; i < 2048; i++) { 510 struct cpl_rte_write_req *req; 511 512 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 513 if (!skb) 514 skb = adap->nofail_skb; 515 if (!skb) 516 goto alloc_skb_fail; 517 518 req = __skb_put_zero(skb, sizeof(*req)); 519 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 520 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i)); 521 req->l2t_idx = htonl(V_L2T_W_IDX(i)); 522 t3_mgmt_tx(adap, skb); 523 if (skb == adap->nofail_skb) { 524 await_mgmt_replies(adap, cnt, 16 + 2048 + i + 1); 525 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 526 if (!adap->nofail_skb) 527 goto alloc_skb_fail; 528 } 529 } 530 531 skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 532 if (!skb) 533 skb = adap->nofail_skb; 534 if (!skb) 535 goto alloc_skb_fail; 536 537 greq = __skb_put_zero(skb, sizeof(*greq)); 538 greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 539 OPCODE_TID(greq) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, 0)); 540 greq->mask = cpu_to_be64(1); 541 t3_mgmt_tx(adap, skb); 542 543 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1); 544 if (skb == adap->nofail_skb) { 545 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1); 546 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 547 } 548 549 t3_tp_set_offload_mode(adap, 0); 550 return i; 551 552 alloc_skb_fail: 553 t3_tp_set_offload_mode(adap, 0); 554 return -ENOMEM; 555 } 556 557 /** 558 * setup_rss - configure RSS 559 * @adap: the adapter 560 * 561 * Sets up RSS to distribute packets to multiple receive queues. We 562 * configure the RSS CPU lookup table to distribute to the number of HW 563 * receive queues, and the response queue lookup table to narrow that 564 * down to the response queues actually configured for each port. 565 * We always configure the RSS mapping for two ports since the mapping 566 * table has plenty of entries. 567 */ 568 static void setup_rss(struct adapter *adap) 569 { 570 int i; 571 unsigned int nq0 = adap2pinfo(adap, 0)->nqsets; 572 unsigned int nq1 = adap->port[1] ? adap2pinfo(adap, 1)->nqsets : 1; 573 u8 cpus[SGE_QSETS + 1]; 574 u16 rspq_map[RSS_TABLE_SIZE + 1]; 575 576 for (i = 0; i < SGE_QSETS; ++i) 577 cpus[i] = i; 578 cpus[SGE_QSETS] = 0xff; /* terminator */ 579 580 for (i = 0; i < RSS_TABLE_SIZE / 2; ++i) { 581 rspq_map[i] = i % nq0; 582 rspq_map[i + RSS_TABLE_SIZE / 2] = (i % nq1) + nq0; 583 } 584 rspq_map[RSS_TABLE_SIZE] = 0xffff; /* terminator */ 585 586 t3_config_rss(adap, F_RQFEEDBACKENABLE | F_TNLLKPEN | F_TNLMAPEN | 587 F_TNLPRTEN | F_TNL2TUPEN | F_TNL4TUPEN | 588 V_RRCPLCPUSIZE(6) | F_HASHTOEPLITZ, cpus, rspq_map); 589 } 590 591 static void ring_dbs(struct adapter *adap) 592 { 593 int i, j; 594 595 for (i = 0; i < SGE_QSETS; i++) { 596 struct sge_qset *qs = &adap->sge.qs[i]; 597 598 if (qs->adap) 599 for (j = 0; j < SGE_TXQ_PER_SET; j++) 600 t3_write_reg(adap, A_SG_KDOORBELL, F_SELEGRCNTX | V_EGRCNTX(qs->txq[j].cntxt_id)); 601 } 602 } 603 604 static void init_napi(struct adapter *adap) 605 { 606 int i; 607 608 for (i = 0; i < SGE_QSETS; i++) { 609 struct sge_qset *qs = &adap->sge.qs[i]; 610 611 if (qs->adap) 612 netif_napi_add(qs->netdev, &qs->napi, qs->napi.poll, 613 64); 614 } 615 616 /* 617 * netif_napi_add() can be called only once per napi_struct because it 618 * adds each new napi_struct to a list. Be careful not to call it a 619 * second time, e.g., during EEH recovery, by making a note of it. 620 */ 621 adap->flags |= NAPI_INIT; 622 } 623 624 /* 625 * Wait until all NAPI handlers are descheduled. This includes the handlers of 626 * both netdevices representing interfaces and the dummy ones for the extra 627 * queues. 628 */ 629 static void quiesce_rx(struct adapter *adap) 630 { 631 int i; 632 633 for (i = 0; i < SGE_QSETS; i++) 634 if (adap->sge.qs[i].adap) 635 napi_disable(&adap->sge.qs[i].napi); 636 } 637 638 static void enable_all_napi(struct adapter *adap) 639 { 640 int i; 641 for (i = 0; i < SGE_QSETS; i++) 642 if (adap->sge.qs[i].adap) 643 napi_enable(&adap->sge.qs[i].napi); 644 } 645 646 /** 647 * setup_sge_qsets - configure SGE Tx/Rx/response queues 648 * @adap: the adapter 649 * 650 * Determines how many sets of SGE queues to use and initializes them. 651 * We support multiple queue sets per port if we have MSI-X, otherwise 652 * just one queue set per port. 653 */ 654 static int setup_sge_qsets(struct adapter *adap) 655 { 656 int i, j, err, irq_idx = 0, qset_idx = 0; 657 unsigned int ntxq = SGE_TXQ_PER_SET; 658 659 if (adap->params.rev > 0 && !(adap->flags & USING_MSI)) 660 irq_idx = -1; 661 662 for_each_port(adap, i) { 663 struct net_device *dev = adap->port[i]; 664 struct port_info *pi = netdev_priv(dev); 665 666 pi->qs = &adap->sge.qs[pi->first_qset]; 667 for (j = 0; j < pi->nqsets; ++j, ++qset_idx) { 668 err = t3_sge_alloc_qset(adap, qset_idx, 1, 669 (adap->flags & USING_MSIX) ? qset_idx + 1 : 670 irq_idx, 671 &adap->params.sge.qset[qset_idx], ntxq, dev, 672 netdev_get_tx_queue(dev, j)); 673 if (err) { 674 t3_free_sge_resources(adap); 675 return err; 676 } 677 } 678 } 679 680 return 0; 681 } 682 683 static ssize_t attr_show(struct device *d, char *buf, 684 ssize_t(*format) (struct net_device *, char *)) 685 { 686 ssize_t len; 687 688 /* Synchronize with ioctls that may shut down the device */ 689 rtnl_lock(); 690 len = (*format) (to_net_dev(d), buf); 691 rtnl_unlock(); 692 return len; 693 } 694 695 static ssize_t attr_store(struct device *d, 696 const char *buf, size_t len, 697 ssize_t(*set) (struct net_device *, unsigned int), 698 unsigned int min_val, unsigned int max_val) 699 { 700 ssize_t ret; 701 unsigned int val; 702 703 if (!capable(CAP_NET_ADMIN)) 704 return -EPERM; 705 706 ret = kstrtouint(buf, 0, &val); 707 if (ret) 708 return ret; 709 if (val < min_val || val > max_val) 710 return -EINVAL; 711 712 rtnl_lock(); 713 ret = (*set) (to_net_dev(d), val); 714 if (!ret) 715 ret = len; 716 rtnl_unlock(); 717 return ret; 718 } 719 720 #define CXGB3_SHOW(name, val_expr) \ 721 static ssize_t format_##name(struct net_device *dev, char *buf) \ 722 { \ 723 struct port_info *pi = netdev_priv(dev); \ 724 struct adapter *adap = pi->adapter; \ 725 return sprintf(buf, "%u\n", val_expr); \ 726 } \ 727 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \ 728 char *buf) \ 729 { \ 730 return attr_show(d, buf, format_##name); \ 731 } 732 733 static ssize_t set_nfilters(struct net_device *dev, unsigned int val) 734 { 735 struct port_info *pi = netdev_priv(dev); 736 struct adapter *adap = pi->adapter; 737 int min_tids = is_offload(adap) ? MC5_MIN_TIDS : 0; 738 739 if (adap->flags & FULL_INIT_DONE) 740 return -EBUSY; 741 if (val && adap->params.rev == 0) 742 return -EINVAL; 743 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nservers - 744 min_tids) 745 return -EINVAL; 746 adap->params.mc5.nfilters = val; 747 return 0; 748 } 749 750 static ssize_t store_nfilters(struct device *d, struct device_attribute *attr, 751 const char *buf, size_t len) 752 { 753 return attr_store(d, buf, len, set_nfilters, 0, ~0); 754 } 755 756 static ssize_t set_nservers(struct net_device *dev, unsigned int val) 757 { 758 struct port_info *pi = netdev_priv(dev); 759 struct adapter *adap = pi->adapter; 760 761 if (adap->flags & FULL_INIT_DONE) 762 return -EBUSY; 763 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nfilters - 764 MC5_MIN_TIDS) 765 return -EINVAL; 766 adap->params.mc5.nservers = val; 767 return 0; 768 } 769 770 static ssize_t store_nservers(struct device *d, struct device_attribute *attr, 771 const char *buf, size_t len) 772 { 773 return attr_store(d, buf, len, set_nservers, 0, ~0); 774 } 775 776 #define CXGB3_ATTR_R(name, val_expr) \ 777 CXGB3_SHOW(name, val_expr) \ 778 static DEVICE_ATTR(name, 0444, show_##name, NULL) 779 780 #define CXGB3_ATTR_RW(name, val_expr, store_method) \ 781 CXGB3_SHOW(name, val_expr) \ 782 static DEVICE_ATTR(name, 0644, show_##name, store_method) 783 784 CXGB3_ATTR_R(cam_size, t3_mc5_size(&adap->mc5)); 785 CXGB3_ATTR_RW(nfilters, adap->params.mc5.nfilters, store_nfilters); 786 CXGB3_ATTR_RW(nservers, adap->params.mc5.nservers, store_nservers); 787 788 static struct attribute *cxgb3_attrs[] = { 789 &dev_attr_cam_size.attr, 790 &dev_attr_nfilters.attr, 791 &dev_attr_nservers.attr, 792 NULL 793 }; 794 795 static const struct attribute_group cxgb3_attr_group = { 796 .attrs = cxgb3_attrs, 797 }; 798 799 static ssize_t tm_attr_show(struct device *d, 800 char *buf, int sched) 801 { 802 struct port_info *pi = netdev_priv(to_net_dev(d)); 803 struct adapter *adap = pi->adapter; 804 unsigned int v, addr, bpt, cpt; 805 ssize_t len; 806 807 addr = A_TP_TX_MOD_Q1_Q0_RATE_LIMIT - sched / 2; 808 rtnl_lock(); 809 t3_write_reg(adap, A_TP_TM_PIO_ADDR, addr); 810 v = t3_read_reg(adap, A_TP_TM_PIO_DATA); 811 if (sched & 1) 812 v >>= 16; 813 bpt = (v >> 8) & 0xff; 814 cpt = v & 0xff; 815 if (!cpt) 816 len = sprintf(buf, "disabled\n"); 817 else { 818 v = (adap->params.vpd.cclk * 1000) / cpt; 819 len = sprintf(buf, "%u Kbps\n", (v * bpt) / 125); 820 } 821 rtnl_unlock(); 822 return len; 823 } 824 825 static ssize_t tm_attr_store(struct device *d, 826 const char *buf, size_t len, int sched) 827 { 828 struct port_info *pi = netdev_priv(to_net_dev(d)); 829 struct adapter *adap = pi->adapter; 830 unsigned int val; 831 ssize_t ret; 832 833 if (!capable(CAP_NET_ADMIN)) 834 return -EPERM; 835 836 ret = kstrtouint(buf, 0, &val); 837 if (ret) 838 return ret; 839 if (val > 10000000) 840 return -EINVAL; 841 842 rtnl_lock(); 843 ret = t3_config_sched(adap, val, sched); 844 if (!ret) 845 ret = len; 846 rtnl_unlock(); 847 return ret; 848 } 849 850 #define TM_ATTR(name, sched) \ 851 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \ 852 char *buf) \ 853 { \ 854 return tm_attr_show(d, buf, sched); \ 855 } \ 856 static ssize_t store_##name(struct device *d, struct device_attribute *attr, \ 857 const char *buf, size_t len) \ 858 { \ 859 return tm_attr_store(d, buf, len, sched); \ 860 } \ 861 static DEVICE_ATTR(name, 0644, show_##name, store_##name) 862 863 TM_ATTR(sched0, 0); 864 TM_ATTR(sched1, 1); 865 TM_ATTR(sched2, 2); 866 TM_ATTR(sched3, 3); 867 TM_ATTR(sched4, 4); 868 TM_ATTR(sched5, 5); 869 TM_ATTR(sched6, 6); 870 TM_ATTR(sched7, 7); 871 872 static struct attribute *offload_attrs[] = { 873 &dev_attr_sched0.attr, 874 &dev_attr_sched1.attr, 875 &dev_attr_sched2.attr, 876 &dev_attr_sched3.attr, 877 &dev_attr_sched4.attr, 878 &dev_attr_sched5.attr, 879 &dev_attr_sched6.attr, 880 &dev_attr_sched7.attr, 881 NULL 882 }; 883 884 static const struct attribute_group offload_attr_group = { 885 .attrs = offload_attrs, 886 }; 887 888 /* 889 * Sends an sk_buff to an offload queue driver 890 * after dealing with any active network taps. 891 */ 892 static inline int offload_tx(struct t3cdev *tdev, struct sk_buff *skb) 893 { 894 int ret; 895 896 local_bh_disable(); 897 ret = t3_offload_tx(tdev, skb); 898 local_bh_enable(); 899 return ret; 900 } 901 902 static int write_smt_entry(struct adapter *adapter, int idx) 903 { 904 struct cpl_smt_write_req *req; 905 struct port_info *pi = netdev_priv(adapter->port[idx]); 906 struct sk_buff *skb = alloc_skb(sizeof(*req), GFP_KERNEL); 907 908 if (!skb) 909 return -ENOMEM; 910 911 req = __skb_put(skb, sizeof(*req)); 912 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 913 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, idx)); 914 req->mtu_idx = NMTUS - 1; /* should be 0 but there's a T3 bug */ 915 req->iff = idx; 916 memcpy(req->src_mac0, adapter->port[idx]->dev_addr, ETH_ALEN); 917 memcpy(req->src_mac1, pi->iscsic.mac_addr, ETH_ALEN); 918 skb->priority = 1; 919 offload_tx(&adapter->tdev, skb); 920 return 0; 921 } 922 923 static int init_smt(struct adapter *adapter) 924 { 925 int i; 926 927 for_each_port(adapter, i) 928 write_smt_entry(adapter, i); 929 return 0; 930 } 931 932 static void init_port_mtus(struct adapter *adapter) 933 { 934 unsigned int mtus = adapter->port[0]->mtu; 935 936 if (adapter->port[1]) 937 mtus |= adapter->port[1]->mtu << 16; 938 t3_write_reg(adapter, A_TP_MTU_PORT_TABLE, mtus); 939 } 940 941 static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo, 942 int hi, int port) 943 { 944 struct sk_buff *skb; 945 struct mngt_pktsched_wr *req; 946 int ret; 947 948 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 949 if (!skb) 950 skb = adap->nofail_skb; 951 if (!skb) 952 return -ENOMEM; 953 954 req = skb_put(skb, sizeof(*req)); 955 req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_MNGT)); 956 req->mngt_opcode = FW_MNGTOPCODE_PKTSCHED_SET; 957 req->sched = sched; 958 req->idx = qidx; 959 req->min = lo; 960 req->max = hi; 961 req->binding = port; 962 ret = t3_mgmt_tx(adap, skb); 963 if (skb == adap->nofail_skb) { 964 adap->nofail_skb = alloc_skb(sizeof(struct cpl_set_tcb_field), 965 GFP_KERNEL); 966 if (!adap->nofail_skb) 967 ret = -ENOMEM; 968 } 969 970 return ret; 971 } 972 973 static int bind_qsets(struct adapter *adap) 974 { 975 int i, j, err = 0; 976 977 for_each_port(adap, i) { 978 const struct port_info *pi = adap2pinfo(adap, i); 979 980 for (j = 0; j < pi->nqsets; ++j) { 981 int ret = send_pktsched_cmd(adap, 1, 982 pi->first_qset + j, -1, 983 -1, i); 984 if (ret) 985 err = ret; 986 } 987 } 988 989 return err; 990 } 991 992 #define FW_VERSION __stringify(FW_VERSION_MAJOR) "." \ 993 __stringify(FW_VERSION_MINOR) "." __stringify(FW_VERSION_MICRO) 994 #define FW_FNAME "cxgb3/t3fw-" FW_VERSION ".bin" 995 #define TPSRAM_VERSION __stringify(TP_VERSION_MAJOR) "." \ 996 __stringify(TP_VERSION_MINOR) "." __stringify(TP_VERSION_MICRO) 997 #define TPSRAM_NAME "cxgb3/t3%c_psram-" TPSRAM_VERSION ".bin" 998 #define AEL2005_OPT_EDC_NAME "cxgb3/ael2005_opt_edc.bin" 999 #define AEL2005_TWX_EDC_NAME "cxgb3/ael2005_twx_edc.bin" 1000 #define AEL2020_TWX_EDC_NAME "cxgb3/ael2020_twx_edc.bin" 1001 MODULE_FIRMWARE(FW_FNAME); 1002 MODULE_FIRMWARE("cxgb3/t3b_psram-" TPSRAM_VERSION ".bin"); 1003 MODULE_FIRMWARE("cxgb3/t3c_psram-" TPSRAM_VERSION ".bin"); 1004 MODULE_FIRMWARE(AEL2005_OPT_EDC_NAME); 1005 MODULE_FIRMWARE(AEL2005_TWX_EDC_NAME); 1006 MODULE_FIRMWARE(AEL2020_TWX_EDC_NAME); 1007 1008 static inline const char *get_edc_fw_name(int edc_idx) 1009 { 1010 const char *fw_name = NULL; 1011 1012 switch (edc_idx) { 1013 case EDC_OPT_AEL2005: 1014 fw_name = AEL2005_OPT_EDC_NAME; 1015 break; 1016 case EDC_TWX_AEL2005: 1017 fw_name = AEL2005_TWX_EDC_NAME; 1018 break; 1019 case EDC_TWX_AEL2020: 1020 fw_name = AEL2020_TWX_EDC_NAME; 1021 break; 1022 } 1023 return fw_name; 1024 } 1025 1026 int t3_get_edc_fw(struct cphy *phy, int edc_idx, int size) 1027 { 1028 struct adapter *adapter = phy->adapter; 1029 const struct firmware *fw; 1030 const char *fw_name; 1031 u32 csum; 1032 const __be32 *p; 1033 u16 *cache = phy->phy_cache; 1034 int i, ret = -EINVAL; 1035 1036 fw_name = get_edc_fw_name(edc_idx); 1037 if (fw_name) 1038 ret = request_firmware(&fw, fw_name, &adapter->pdev->dev); 1039 if (ret < 0) { 1040 dev_err(&adapter->pdev->dev, 1041 "could not upgrade firmware: unable to load %s\n", 1042 fw_name); 1043 return ret; 1044 } 1045 1046 /* check size, take checksum in account */ 1047 if (fw->size > size + 4) { 1048 CH_ERR(adapter, "firmware image too large %u, expected %d\n", 1049 (unsigned int)fw->size, size + 4); 1050 ret = -EINVAL; 1051 } 1052 1053 /* compute checksum */ 1054 p = (const __be32 *)fw->data; 1055 for (csum = 0, i = 0; i < fw->size / sizeof(csum); i++) 1056 csum += ntohl(p[i]); 1057 1058 if (csum != 0xffffffff) { 1059 CH_ERR(adapter, "corrupted firmware image, checksum %u\n", 1060 csum); 1061 ret = -EINVAL; 1062 } 1063 1064 for (i = 0; i < size / 4 ; i++) { 1065 *cache++ = (be32_to_cpu(p[i]) & 0xffff0000) >> 16; 1066 *cache++ = be32_to_cpu(p[i]) & 0xffff; 1067 } 1068 1069 release_firmware(fw); 1070 1071 return ret; 1072 } 1073 1074 static int upgrade_fw(struct adapter *adap) 1075 { 1076 int ret; 1077 const struct firmware *fw; 1078 struct device *dev = &adap->pdev->dev; 1079 1080 ret = request_firmware(&fw, FW_FNAME, dev); 1081 if (ret < 0) { 1082 dev_err(dev, "could not upgrade firmware: unable to load %s\n", 1083 FW_FNAME); 1084 return ret; 1085 } 1086 ret = t3_load_fw(adap, fw->data, fw->size); 1087 release_firmware(fw); 1088 1089 if (ret == 0) 1090 dev_info(dev, "successful upgrade to firmware %d.%d.%d\n", 1091 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO); 1092 else 1093 dev_err(dev, "failed to upgrade to firmware %d.%d.%d\n", 1094 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO); 1095 1096 return ret; 1097 } 1098 1099 static inline char t3rev2char(struct adapter *adapter) 1100 { 1101 char rev = 0; 1102 1103 switch(adapter->params.rev) { 1104 case T3_REV_B: 1105 case T3_REV_B2: 1106 rev = 'b'; 1107 break; 1108 case T3_REV_C: 1109 rev = 'c'; 1110 break; 1111 } 1112 return rev; 1113 } 1114 1115 static int update_tpsram(struct adapter *adap) 1116 { 1117 const struct firmware *tpsram; 1118 char buf[64]; 1119 struct device *dev = &adap->pdev->dev; 1120 int ret; 1121 char rev; 1122 1123 rev = t3rev2char(adap); 1124 if (!rev) 1125 return 0; 1126 1127 snprintf(buf, sizeof(buf), TPSRAM_NAME, rev); 1128 1129 ret = request_firmware(&tpsram, buf, dev); 1130 if (ret < 0) { 1131 dev_err(dev, "could not load TP SRAM: unable to load %s\n", 1132 buf); 1133 return ret; 1134 } 1135 1136 ret = t3_check_tpsram(adap, tpsram->data, tpsram->size); 1137 if (ret) 1138 goto release_tpsram; 1139 1140 ret = t3_set_proto_sram(adap, tpsram->data); 1141 if (ret == 0) 1142 dev_info(dev, 1143 "successful update of protocol engine " 1144 "to %d.%d.%d\n", 1145 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO); 1146 else 1147 dev_err(dev, "failed to update of protocol engine %d.%d.%d\n", 1148 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO); 1149 if (ret) 1150 dev_err(dev, "loading protocol SRAM failed\n"); 1151 1152 release_tpsram: 1153 release_firmware(tpsram); 1154 1155 return ret; 1156 } 1157 1158 /** 1159 * t3_synchronize_rx - wait for current Rx processing on a port to complete 1160 * @adap: the adapter 1161 * @p: the port 1162 * 1163 * Ensures that current Rx processing on any of the queues associated with 1164 * the given port completes before returning. We do this by acquiring and 1165 * releasing the locks of the response queues associated with the port. 1166 */ 1167 static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p) 1168 { 1169 int i; 1170 1171 for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { 1172 struct sge_rspq *q = &adap->sge.qs[i].rspq; 1173 1174 spin_lock_irq(&q->lock); 1175 spin_unlock_irq(&q->lock); 1176 } 1177 } 1178 1179 static void cxgb_vlan_mode(struct net_device *dev, netdev_features_t features) 1180 { 1181 struct port_info *pi = netdev_priv(dev); 1182 struct adapter *adapter = pi->adapter; 1183 1184 if (adapter->params.rev > 0) { 1185 t3_set_vlan_accel(adapter, 1 << pi->port_id, 1186 features & NETIF_F_HW_VLAN_CTAG_RX); 1187 } else { 1188 /* single control for all ports */ 1189 unsigned int i, have_vlans = features & NETIF_F_HW_VLAN_CTAG_RX; 1190 1191 for_each_port(adapter, i) 1192 have_vlans |= 1193 adapter->port[i]->features & 1194 NETIF_F_HW_VLAN_CTAG_RX; 1195 1196 t3_set_vlan_accel(adapter, 1, have_vlans); 1197 } 1198 t3_synchronize_rx(adapter, pi); 1199 } 1200 1201 /** 1202 * cxgb_up - enable the adapter 1203 * @adap: adapter being enabled 1204 * 1205 * Called when the first port is enabled, this function performs the 1206 * actions necessary to make an adapter operational, such as completing 1207 * the initialization of HW modules, and enabling interrupts. 1208 * 1209 * Must be called with the rtnl lock held. 1210 */ 1211 static int cxgb_up(struct adapter *adap) 1212 { 1213 int i, err; 1214 1215 if (!(adap->flags & FULL_INIT_DONE)) { 1216 err = t3_check_fw_version(adap); 1217 if (err == -EINVAL) { 1218 err = upgrade_fw(adap); 1219 CH_WARN(adap, "FW upgrade to %d.%d.%d %s\n", 1220 FW_VERSION_MAJOR, FW_VERSION_MINOR, 1221 FW_VERSION_MICRO, err ? "failed" : "succeeded"); 1222 } 1223 1224 err = t3_check_tpsram_version(adap); 1225 if (err == -EINVAL) { 1226 err = update_tpsram(adap); 1227 CH_WARN(adap, "TP upgrade to %d.%d.%d %s\n", 1228 TP_VERSION_MAJOR, TP_VERSION_MINOR, 1229 TP_VERSION_MICRO, err ? "failed" : "succeeded"); 1230 } 1231 1232 /* 1233 * Clear interrupts now to catch errors if t3_init_hw fails. 1234 * We clear them again later as initialization may trigger 1235 * conditions that can interrupt. 1236 */ 1237 t3_intr_clear(adap); 1238 1239 err = t3_init_hw(adap, 0); 1240 if (err) 1241 goto out; 1242 1243 t3_set_reg_field(adap, A_TP_PARA_REG5, 0, F_RXDDPOFFINIT); 1244 t3_write_reg(adap, A_ULPRX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12)); 1245 1246 err = setup_sge_qsets(adap); 1247 if (err) 1248 goto out; 1249 1250 for_each_port(adap, i) 1251 cxgb_vlan_mode(adap->port[i], adap->port[i]->features); 1252 1253 setup_rss(adap); 1254 if (!(adap->flags & NAPI_INIT)) 1255 init_napi(adap); 1256 1257 t3_start_sge_timers(adap); 1258 adap->flags |= FULL_INIT_DONE; 1259 } 1260 1261 t3_intr_clear(adap); 1262 1263 if (adap->flags & USING_MSIX) { 1264 name_msix_vecs(adap); 1265 err = request_irq(adap->msix_info[0].vec, 1266 t3_async_intr_handler, 0, 1267 adap->msix_info[0].desc, adap); 1268 if (err) 1269 goto irq_err; 1270 1271 err = request_msix_data_irqs(adap); 1272 if (err) { 1273 free_irq(adap->msix_info[0].vec, adap); 1274 goto irq_err; 1275 } 1276 } else { 1277 err = request_irq(adap->pdev->irq, 1278 t3_intr_handler(adap, adap->sge.qs[0].rspq.polling), 1279 (adap->flags & USING_MSI) ? 0 : IRQF_SHARED, 1280 adap->name, adap); 1281 if (err) 1282 goto irq_err; 1283 } 1284 1285 enable_all_napi(adap); 1286 t3_sge_start(adap); 1287 t3_intr_enable(adap); 1288 1289 if (adap->params.rev >= T3_REV_C && !(adap->flags & TP_PARITY_INIT) && 1290 is_offload(adap) && init_tp_parity(adap) == 0) 1291 adap->flags |= TP_PARITY_INIT; 1292 1293 if (adap->flags & TP_PARITY_INIT) { 1294 t3_write_reg(adap, A_TP_INT_CAUSE, 1295 F_CMCACHEPERR | F_ARPLUTPERR); 1296 t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff); 1297 } 1298 1299 if (!(adap->flags & QUEUES_BOUND)) { 1300 int ret = bind_qsets(adap); 1301 1302 if (ret < 0) { 1303 CH_ERR(adap, "failed to bind qsets, err %d\n", ret); 1304 t3_intr_disable(adap); 1305 free_irq_resources(adap); 1306 err = ret; 1307 goto out; 1308 } 1309 adap->flags |= QUEUES_BOUND; 1310 } 1311 1312 out: 1313 return err; 1314 irq_err: 1315 CH_ERR(adap, "request_irq failed, err %d\n", err); 1316 goto out; 1317 } 1318 1319 /* 1320 * Release resources when all the ports and offloading have been stopped. 1321 */ 1322 static void cxgb_down(struct adapter *adapter, int on_wq) 1323 { 1324 t3_sge_stop(adapter); 1325 spin_lock_irq(&adapter->work_lock); /* sync with PHY intr task */ 1326 t3_intr_disable(adapter); 1327 spin_unlock_irq(&adapter->work_lock); 1328 1329 free_irq_resources(adapter); 1330 quiesce_rx(adapter); 1331 t3_sge_stop(adapter); 1332 if (!on_wq) 1333 flush_workqueue(cxgb3_wq);/* wait for external IRQ handler */ 1334 } 1335 1336 static void schedule_chk_task(struct adapter *adap) 1337 { 1338 unsigned int timeo; 1339 1340 timeo = adap->params.linkpoll_period ? 1341 (HZ * adap->params.linkpoll_period) / 10 : 1342 adap->params.stats_update_period * HZ; 1343 if (timeo) 1344 queue_delayed_work(cxgb3_wq, &adap->adap_check_task, timeo); 1345 } 1346 1347 static int offload_open(struct net_device *dev) 1348 { 1349 struct port_info *pi = netdev_priv(dev); 1350 struct adapter *adapter = pi->adapter; 1351 struct t3cdev *tdev = dev2t3cdev(dev); 1352 int adap_up = adapter->open_device_map & PORT_MASK; 1353 int err; 1354 1355 if (test_and_set_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) 1356 return 0; 1357 1358 if (!adap_up && (err = cxgb_up(adapter)) < 0) 1359 goto out; 1360 1361 t3_tp_set_offload_mode(adapter, 1); 1362 tdev->lldev = adapter->port[0]; 1363 err = cxgb3_offload_activate(adapter); 1364 if (err) 1365 goto out; 1366 1367 init_port_mtus(adapter); 1368 t3_load_mtus(adapter, adapter->params.mtus, adapter->params.a_wnd, 1369 adapter->params.b_wnd, 1370 adapter->params.rev == 0 ? 1371 adapter->port[0]->mtu : 0xffff); 1372 init_smt(adapter); 1373 1374 if (sysfs_create_group(&tdev->lldev->dev.kobj, &offload_attr_group)) 1375 dev_dbg(&dev->dev, "cannot create sysfs group\n"); 1376 1377 /* Call back all registered clients */ 1378 cxgb3_add_clients(tdev); 1379 1380 out: 1381 /* restore them in case the offload module has changed them */ 1382 if (err) { 1383 t3_tp_set_offload_mode(adapter, 0); 1384 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); 1385 cxgb3_set_dummy_ops(tdev); 1386 } 1387 return err; 1388 } 1389 1390 static int offload_close(struct t3cdev *tdev) 1391 { 1392 struct adapter *adapter = tdev2adap(tdev); 1393 struct t3c_data *td = T3C_DATA(tdev); 1394 1395 if (!test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) 1396 return 0; 1397 1398 /* Call back all registered clients */ 1399 cxgb3_remove_clients(tdev); 1400 1401 sysfs_remove_group(&tdev->lldev->dev.kobj, &offload_attr_group); 1402 1403 /* Flush work scheduled while releasing TIDs */ 1404 flush_work(&td->tid_release_task); 1405 1406 tdev->lldev = NULL; 1407 cxgb3_set_dummy_ops(tdev); 1408 t3_tp_set_offload_mode(adapter, 0); 1409 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); 1410 1411 if (!adapter->open_device_map) 1412 cxgb_down(adapter, 0); 1413 1414 cxgb3_offload_deactivate(adapter); 1415 return 0; 1416 } 1417 1418 static int cxgb_open(struct net_device *dev) 1419 { 1420 struct port_info *pi = netdev_priv(dev); 1421 struct adapter *adapter = pi->adapter; 1422 int other_ports = adapter->open_device_map & PORT_MASK; 1423 int err; 1424 1425 if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) 1426 return err; 1427 1428 set_bit(pi->port_id, &adapter->open_device_map); 1429 if (is_offload(adapter) && !ofld_disable) { 1430 err = offload_open(dev); 1431 if (err) 1432 pr_warn("Could not initialize offload capabilities\n"); 1433 } 1434 1435 netif_set_real_num_tx_queues(dev, pi->nqsets); 1436 err = netif_set_real_num_rx_queues(dev, pi->nqsets); 1437 if (err) 1438 return err; 1439 link_start(dev); 1440 t3_port_intr_enable(adapter, pi->port_id); 1441 netif_tx_start_all_queues(dev); 1442 if (!other_ports) 1443 schedule_chk_task(adapter); 1444 1445 cxgb3_event_notify(&adapter->tdev, OFFLOAD_PORT_UP, pi->port_id); 1446 return 0; 1447 } 1448 1449 static int __cxgb_close(struct net_device *dev, int on_wq) 1450 { 1451 struct port_info *pi = netdev_priv(dev); 1452 struct adapter *adapter = pi->adapter; 1453 1454 1455 if (!adapter->open_device_map) 1456 return 0; 1457 1458 /* Stop link fault interrupts */ 1459 t3_xgm_intr_disable(adapter, pi->port_id); 1460 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 1461 1462 t3_port_intr_disable(adapter, pi->port_id); 1463 netif_tx_stop_all_queues(dev); 1464 pi->phy.ops->power_down(&pi->phy, 1); 1465 netif_carrier_off(dev); 1466 t3_mac_disable(&pi->mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX); 1467 1468 spin_lock_irq(&adapter->work_lock); /* sync with update task */ 1469 clear_bit(pi->port_id, &adapter->open_device_map); 1470 spin_unlock_irq(&adapter->work_lock); 1471 1472 if (!(adapter->open_device_map & PORT_MASK)) 1473 cancel_delayed_work_sync(&adapter->adap_check_task); 1474 1475 if (!adapter->open_device_map) 1476 cxgb_down(adapter, on_wq); 1477 1478 cxgb3_event_notify(&adapter->tdev, OFFLOAD_PORT_DOWN, pi->port_id); 1479 return 0; 1480 } 1481 1482 static int cxgb_close(struct net_device *dev) 1483 { 1484 return __cxgb_close(dev, 0); 1485 } 1486 1487 static struct net_device_stats *cxgb_get_stats(struct net_device *dev) 1488 { 1489 struct port_info *pi = netdev_priv(dev); 1490 struct adapter *adapter = pi->adapter; 1491 struct net_device_stats *ns = &dev->stats; 1492 const struct mac_stats *pstats; 1493 1494 spin_lock(&adapter->stats_lock); 1495 pstats = t3_mac_update_stats(&pi->mac); 1496 spin_unlock(&adapter->stats_lock); 1497 1498 ns->tx_bytes = pstats->tx_octets; 1499 ns->tx_packets = pstats->tx_frames; 1500 ns->rx_bytes = pstats->rx_octets; 1501 ns->rx_packets = pstats->rx_frames; 1502 ns->multicast = pstats->rx_mcast_frames; 1503 1504 ns->tx_errors = pstats->tx_underrun; 1505 ns->rx_errors = pstats->rx_symbol_errs + pstats->rx_fcs_errs + 1506 pstats->rx_too_long + pstats->rx_jabber + pstats->rx_short + 1507 pstats->rx_fifo_ovfl; 1508 1509 /* detailed rx_errors */ 1510 ns->rx_length_errors = pstats->rx_jabber + pstats->rx_too_long; 1511 ns->rx_over_errors = 0; 1512 ns->rx_crc_errors = pstats->rx_fcs_errs; 1513 ns->rx_frame_errors = pstats->rx_symbol_errs; 1514 ns->rx_fifo_errors = pstats->rx_fifo_ovfl; 1515 ns->rx_missed_errors = pstats->rx_cong_drops; 1516 1517 /* detailed tx_errors */ 1518 ns->tx_aborted_errors = 0; 1519 ns->tx_carrier_errors = 0; 1520 ns->tx_fifo_errors = pstats->tx_underrun; 1521 ns->tx_heartbeat_errors = 0; 1522 ns->tx_window_errors = 0; 1523 return ns; 1524 } 1525 1526 static u32 get_msglevel(struct net_device *dev) 1527 { 1528 struct port_info *pi = netdev_priv(dev); 1529 struct adapter *adapter = pi->adapter; 1530 1531 return adapter->msg_enable; 1532 } 1533 1534 static void set_msglevel(struct net_device *dev, u32 val) 1535 { 1536 struct port_info *pi = netdev_priv(dev); 1537 struct adapter *adapter = pi->adapter; 1538 1539 adapter->msg_enable = val; 1540 } 1541 1542 static const char stats_strings[][ETH_GSTRING_LEN] = { 1543 "TxOctetsOK ", 1544 "TxFramesOK ", 1545 "TxMulticastFramesOK", 1546 "TxBroadcastFramesOK", 1547 "TxPauseFrames ", 1548 "TxUnderrun ", 1549 "TxExtUnderrun ", 1550 1551 "TxFrames64 ", 1552 "TxFrames65To127 ", 1553 "TxFrames128To255 ", 1554 "TxFrames256To511 ", 1555 "TxFrames512To1023 ", 1556 "TxFrames1024To1518 ", 1557 "TxFrames1519ToMax ", 1558 1559 "RxOctetsOK ", 1560 "RxFramesOK ", 1561 "RxMulticastFramesOK", 1562 "RxBroadcastFramesOK", 1563 "RxPauseFrames ", 1564 "RxFCSErrors ", 1565 "RxSymbolErrors ", 1566 "RxShortErrors ", 1567 "RxJabberErrors ", 1568 "RxLengthErrors ", 1569 "RxFIFOoverflow ", 1570 1571 "RxFrames64 ", 1572 "RxFrames65To127 ", 1573 "RxFrames128To255 ", 1574 "RxFrames256To511 ", 1575 "RxFrames512To1023 ", 1576 "RxFrames1024To1518 ", 1577 "RxFrames1519ToMax ", 1578 1579 "PhyFIFOErrors ", 1580 "TSO ", 1581 "VLANextractions ", 1582 "VLANinsertions ", 1583 "TxCsumOffload ", 1584 "RxCsumGood ", 1585 "LroAggregated ", 1586 "LroFlushed ", 1587 "LroNoDesc ", 1588 "RxDrops ", 1589 1590 "CheckTXEnToggled ", 1591 "CheckResets ", 1592 1593 "LinkFaults ", 1594 }; 1595 1596 static int get_sset_count(struct net_device *dev, int sset) 1597 { 1598 switch (sset) { 1599 case ETH_SS_STATS: 1600 return ARRAY_SIZE(stats_strings); 1601 default: 1602 return -EOPNOTSUPP; 1603 } 1604 } 1605 1606 #define T3_REGMAP_SIZE (3 * 1024) 1607 1608 static int get_regs_len(struct net_device *dev) 1609 { 1610 return T3_REGMAP_SIZE; 1611 } 1612 1613 static int get_eeprom_len(struct net_device *dev) 1614 { 1615 return EEPROMSIZE; 1616 } 1617 1618 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 1619 { 1620 struct port_info *pi = netdev_priv(dev); 1621 struct adapter *adapter = pi->adapter; 1622 u32 fw_vers = 0; 1623 u32 tp_vers = 0; 1624 1625 spin_lock(&adapter->stats_lock); 1626 t3_get_fw_version(adapter, &fw_vers); 1627 t3_get_tp_version(adapter, &tp_vers); 1628 spin_unlock(&adapter->stats_lock); 1629 1630 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 1631 strlcpy(info->bus_info, pci_name(adapter->pdev), 1632 sizeof(info->bus_info)); 1633 if (fw_vers) 1634 snprintf(info->fw_version, sizeof(info->fw_version), 1635 "%s %u.%u.%u TP %u.%u.%u", 1636 G_FW_VERSION_TYPE(fw_vers) ? "T" : "N", 1637 G_FW_VERSION_MAJOR(fw_vers), 1638 G_FW_VERSION_MINOR(fw_vers), 1639 G_FW_VERSION_MICRO(fw_vers), 1640 G_TP_VERSION_MAJOR(tp_vers), 1641 G_TP_VERSION_MINOR(tp_vers), 1642 G_TP_VERSION_MICRO(tp_vers)); 1643 } 1644 1645 static void get_strings(struct net_device *dev, u32 stringset, u8 * data) 1646 { 1647 if (stringset == ETH_SS_STATS) 1648 memcpy(data, stats_strings, sizeof(stats_strings)); 1649 } 1650 1651 static unsigned long collect_sge_port_stats(struct adapter *adapter, 1652 struct port_info *p, int idx) 1653 { 1654 int i; 1655 unsigned long tot = 0; 1656 1657 for (i = p->first_qset; i < p->first_qset + p->nqsets; ++i) 1658 tot += adapter->sge.qs[i].port_stats[idx]; 1659 return tot; 1660 } 1661 1662 static void get_stats(struct net_device *dev, struct ethtool_stats *stats, 1663 u64 *data) 1664 { 1665 struct port_info *pi = netdev_priv(dev); 1666 struct adapter *adapter = pi->adapter; 1667 const struct mac_stats *s; 1668 1669 spin_lock(&adapter->stats_lock); 1670 s = t3_mac_update_stats(&pi->mac); 1671 spin_unlock(&adapter->stats_lock); 1672 1673 *data++ = s->tx_octets; 1674 *data++ = s->tx_frames; 1675 *data++ = s->tx_mcast_frames; 1676 *data++ = s->tx_bcast_frames; 1677 *data++ = s->tx_pause; 1678 *data++ = s->tx_underrun; 1679 *data++ = s->tx_fifo_urun; 1680 1681 *data++ = s->tx_frames_64; 1682 *data++ = s->tx_frames_65_127; 1683 *data++ = s->tx_frames_128_255; 1684 *data++ = s->tx_frames_256_511; 1685 *data++ = s->tx_frames_512_1023; 1686 *data++ = s->tx_frames_1024_1518; 1687 *data++ = s->tx_frames_1519_max; 1688 1689 *data++ = s->rx_octets; 1690 *data++ = s->rx_frames; 1691 *data++ = s->rx_mcast_frames; 1692 *data++ = s->rx_bcast_frames; 1693 *data++ = s->rx_pause; 1694 *data++ = s->rx_fcs_errs; 1695 *data++ = s->rx_symbol_errs; 1696 *data++ = s->rx_short; 1697 *data++ = s->rx_jabber; 1698 *data++ = s->rx_too_long; 1699 *data++ = s->rx_fifo_ovfl; 1700 1701 *data++ = s->rx_frames_64; 1702 *data++ = s->rx_frames_65_127; 1703 *data++ = s->rx_frames_128_255; 1704 *data++ = s->rx_frames_256_511; 1705 *data++ = s->rx_frames_512_1023; 1706 *data++ = s->rx_frames_1024_1518; 1707 *data++ = s->rx_frames_1519_max; 1708 1709 *data++ = pi->phy.fifo_errors; 1710 1711 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TSO); 1712 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANEX); 1713 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANINS); 1714 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TX_CSUM); 1715 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_RX_CSUM_GOOD); 1716 *data++ = 0; 1717 *data++ = 0; 1718 *data++ = 0; 1719 *data++ = s->rx_cong_drops; 1720 1721 *data++ = s->num_toggled; 1722 *data++ = s->num_resets; 1723 1724 *data++ = s->link_faults; 1725 } 1726 1727 static inline void reg_block_dump(struct adapter *ap, void *buf, 1728 unsigned int start, unsigned int end) 1729 { 1730 u32 *p = buf + start; 1731 1732 for (; start <= end; start += sizeof(u32)) 1733 *p++ = t3_read_reg(ap, start); 1734 } 1735 1736 static void get_regs(struct net_device *dev, struct ethtool_regs *regs, 1737 void *buf) 1738 { 1739 struct port_info *pi = netdev_priv(dev); 1740 struct adapter *ap = pi->adapter; 1741 1742 /* 1743 * Version scheme: 1744 * bits 0..9: chip version 1745 * bits 10..15: chip revision 1746 * bit 31: set for PCIe cards 1747 */ 1748 regs->version = 3 | (ap->params.rev << 10) | (is_pcie(ap) << 31); 1749 1750 /* 1751 * We skip the MAC statistics registers because they are clear-on-read. 1752 * Also reading multi-register stats would need to synchronize with the 1753 * periodic mac stats accumulation. Hard to justify the complexity. 1754 */ 1755 memset(buf, 0, T3_REGMAP_SIZE); 1756 reg_block_dump(ap, buf, 0, A_SG_RSPQ_CREDIT_RETURN); 1757 reg_block_dump(ap, buf, A_SG_HI_DRB_HI_THRSH, A_ULPRX_PBL_ULIMIT); 1758 reg_block_dump(ap, buf, A_ULPTX_CONFIG, A_MPS_INT_CAUSE); 1759 reg_block_dump(ap, buf, A_CPL_SWITCH_CNTRL, A_CPL_MAP_TBL_DATA); 1760 reg_block_dump(ap, buf, A_SMB_GLOBAL_TIME_CFG, A_XGM_SERDES_STAT3); 1761 reg_block_dump(ap, buf, A_XGM_SERDES_STATUS0, 1762 XGM_REG(A_XGM_SERDES_STAT3, 1)); 1763 reg_block_dump(ap, buf, XGM_REG(A_XGM_SERDES_STATUS0, 1), 1764 XGM_REG(A_XGM_RX_SPI4_SOP_EOP_CNT, 1)); 1765 } 1766 1767 static int restart_autoneg(struct net_device *dev) 1768 { 1769 struct port_info *p = netdev_priv(dev); 1770 1771 if (!netif_running(dev)) 1772 return -EAGAIN; 1773 if (p->link_config.autoneg != AUTONEG_ENABLE) 1774 return -EINVAL; 1775 p->phy.ops->autoneg_restart(&p->phy); 1776 return 0; 1777 } 1778 1779 static int set_phys_id(struct net_device *dev, 1780 enum ethtool_phys_id_state state) 1781 { 1782 struct port_info *pi = netdev_priv(dev); 1783 struct adapter *adapter = pi->adapter; 1784 1785 switch (state) { 1786 case ETHTOOL_ID_ACTIVE: 1787 return 1; /* cycle on/off once per second */ 1788 1789 case ETHTOOL_ID_OFF: 1790 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 0); 1791 break; 1792 1793 case ETHTOOL_ID_ON: 1794 case ETHTOOL_ID_INACTIVE: 1795 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 1796 F_GPIO0_OUT_VAL); 1797 } 1798 1799 return 0; 1800 } 1801 1802 static int get_link_ksettings(struct net_device *dev, 1803 struct ethtool_link_ksettings *cmd) 1804 { 1805 struct port_info *p = netdev_priv(dev); 1806 u32 supported; 1807 1808 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 1809 p->link_config.supported); 1810 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 1811 p->link_config.advertising); 1812 1813 if (netif_carrier_ok(dev)) { 1814 cmd->base.speed = p->link_config.speed; 1815 cmd->base.duplex = p->link_config.duplex; 1816 } else { 1817 cmd->base.speed = SPEED_UNKNOWN; 1818 cmd->base.duplex = DUPLEX_UNKNOWN; 1819 } 1820 1821 ethtool_convert_link_mode_to_legacy_u32(&supported, 1822 cmd->link_modes.supported); 1823 1824 cmd->base.port = (supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE; 1825 cmd->base.phy_address = p->phy.mdio.prtad; 1826 cmd->base.autoneg = p->link_config.autoneg; 1827 return 0; 1828 } 1829 1830 static int speed_duplex_to_caps(int speed, int duplex) 1831 { 1832 int cap = 0; 1833 1834 switch (speed) { 1835 case SPEED_10: 1836 if (duplex == DUPLEX_FULL) 1837 cap = SUPPORTED_10baseT_Full; 1838 else 1839 cap = SUPPORTED_10baseT_Half; 1840 break; 1841 case SPEED_100: 1842 if (duplex == DUPLEX_FULL) 1843 cap = SUPPORTED_100baseT_Full; 1844 else 1845 cap = SUPPORTED_100baseT_Half; 1846 break; 1847 case SPEED_1000: 1848 if (duplex == DUPLEX_FULL) 1849 cap = SUPPORTED_1000baseT_Full; 1850 else 1851 cap = SUPPORTED_1000baseT_Half; 1852 break; 1853 case SPEED_10000: 1854 if (duplex == DUPLEX_FULL) 1855 cap = SUPPORTED_10000baseT_Full; 1856 } 1857 return cap; 1858 } 1859 1860 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \ 1861 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \ 1862 ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \ 1863 ADVERTISED_10000baseT_Full) 1864 1865 static int set_link_ksettings(struct net_device *dev, 1866 const struct ethtool_link_ksettings *cmd) 1867 { 1868 struct port_info *p = netdev_priv(dev); 1869 struct link_config *lc = &p->link_config; 1870 u32 advertising; 1871 1872 ethtool_convert_link_mode_to_legacy_u32(&advertising, 1873 cmd->link_modes.advertising); 1874 1875 if (!(lc->supported & SUPPORTED_Autoneg)) { 1876 /* 1877 * PHY offers a single speed/duplex. See if that's what's 1878 * being requested. 1879 */ 1880 if (cmd->base.autoneg == AUTONEG_DISABLE) { 1881 u32 speed = cmd->base.speed; 1882 int cap = speed_duplex_to_caps(speed, cmd->base.duplex); 1883 if (lc->supported & cap) 1884 return 0; 1885 } 1886 return -EINVAL; 1887 } 1888 1889 if (cmd->base.autoneg == AUTONEG_DISABLE) { 1890 u32 speed = cmd->base.speed; 1891 int cap = speed_duplex_to_caps(speed, cmd->base.duplex); 1892 1893 if (!(lc->supported & cap) || (speed == SPEED_1000)) 1894 return -EINVAL; 1895 lc->requested_speed = speed; 1896 lc->requested_duplex = cmd->base.duplex; 1897 lc->advertising = 0; 1898 } else { 1899 advertising &= ADVERTISED_MASK; 1900 advertising &= lc->supported; 1901 if (!advertising) 1902 return -EINVAL; 1903 lc->requested_speed = SPEED_INVALID; 1904 lc->requested_duplex = DUPLEX_INVALID; 1905 lc->advertising = advertising | ADVERTISED_Autoneg; 1906 } 1907 lc->autoneg = cmd->base.autoneg; 1908 if (netif_running(dev)) 1909 t3_link_start(&p->phy, &p->mac, lc); 1910 return 0; 1911 } 1912 1913 static void get_pauseparam(struct net_device *dev, 1914 struct ethtool_pauseparam *epause) 1915 { 1916 struct port_info *p = netdev_priv(dev); 1917 1918 epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0; 1919 epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0; 1920 epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0; 1921 } 1922 1923 static int set_pauseparam(struct net_device *dev, 1924 struct ethtool_pauseparam *epause) 1925 { 1926 struct port_info *p = netdev_priv(dev); 1927 struct link_config *lc = &p->link_config; 1928 1929 if (epause->autoneg == AUTONEG_DISABLE) 1930 lc->requested_fc = 0; 1931 else if (lc->supported & SUPPORTED_Autoneg) 1932 lc->requested_fc = PAUSE_AUTONEG; 1933 else 1934 return -EINVAL; 1935 1936 if (epause->rx_pause) 1937 lc->requested_fc |= PAUSE_RX; 1938 if (epause->tx_pause) 1939 lc->requested_fc |= PAUSE_TX; 1940 if (lc->autoneg == AUTONEG_ENABLE) { 1941 if (netif_running(dev)) 1942 t3_link_start(&p->phy, &p->mac, lc); 1943 } else { 1944 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); 1945 if (netif_running(dev)) 1946 t3_mac_set_speed_duplex_fc(&p->mac, -1, -1, lc->fc); 1947 } 1948 return 0; 1949 } 1950 1951 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e) 1952 { 1953 struct port_info *pi = netdev_priv(dev); 1954 struct adapter *adapter = pi->adapter; 1955 const struct qset_params *q = &adapter->params.sge.qset[pi->first_qset]; 1956 1957 e->rx_max_pending = MAX_RX_BUFFERS; 1958 e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS; 1959 e->tx_max_pending = MAX_TXQ_ENTRIES; 1960 1961 e->rx_pending = q->fl_size; 1962 e->rx_mini_pending = q->rspq_size; 1963 e->rx_jumbo_pending = q->jumbo_size; 1964 e->tx_pending = q->txq_size[0]; 1965 } 1966 1967 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e) 1968 { 1969 struct port_info *pi = netdev_priv(dev); 1970 struct adapter *adapter = pi->adapter; 1971 struct qset_params *q; 1972 int i; 1973 1974 if (e->rx_pending > MAX_RX_BUFFERS || 1975 e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS || 1976 e->tx_pending > MAX_TXQ_ENTRIES || 1977 e->rx_mini_pending > MAX_RSPQ_ENTRIES || 1978 e->rx_mini_pending < MIN_RSPQ_ENTRIES || 1979 e->rx_pending < MIN_FL_ENTRIES || 1980 e->rx_jumbo_pending < MIN_FL_ENTRIES || 1981 e->tx_pending < adapter->params.nports * MIN_TXQ_ENTRIES) 1982 return -EINVAL; 1983 1984 if (adapter->flags & FULL_INIT_DONE) 1985 return -EBUSY; 1986 1987 q = &adapter->params.sge.qset[pi->first_qset]; 1988 for (i = 0; i < pi->nqsets; ++i, ++q) { 1989 q->rspq_size = e->rx_mini_pending; 1990 q->fl_size = e->rx_pending; 1991 q->jumbo_size = e->rx_jumbo_pending; 1992 q->txq_size[0] = e->tx_pending; 1993 q->txq_size[1] = e->tx_pending; 1994 q->txq_size[2] = e->tx_pending; 1995 } 1996 return 0; 1997 } 1998 1999 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c, 2000 struct kernel_ethtool_coalesce *kernel_coal, 2001 struct netlink_ext_ack *extack) 2002 { 2003 struct port_info *pi = netdev_priv(dev); 2004 struct adapter *adapter = pi->adapter; 2005 struct qset_params *qsp; 2006 struct sge_qset *qs; 2007 int i; 2008 2009 if (c->rx_coalesce_usecs * 10 > M_NEWTIMER) 2010 return -EINVAL; 2011 2012 for (i = 0; i < pi->nqsets; i++) { 2013 qsp = &adapter->params.sge.qset[i]; 2014 qs = &adapter->sge.qs[i]; 2015 qsp->coalesce_usecs = c->rx_coalesce_usecs; 2016 t3_update_qset_coalesce(qs, qsp); 2017 } 2018 2019 return 0; 2020 } 2021 2022 static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c, 2023 struct kernel_ethtool_coalesce *kernel_coal, 2024 struct netlink_ext_ack *extack) 2025 { 2026 struct port_info *pi = netdev_priv(dev); 2027 struct adapter *adapter = pi->adapter; 2028 struct qset_params *q = adapter->params.sge.qset; 2029 2030 c->rx_coalesce_usecs = q->coalesce_usecs; 2031 return 0; 2032 } 2033 2034 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e, 2035 u8 * data) 2036 { 2037 struct port_info *pi = netdev_priv(dev); 2038 struct adapter *adapter = pi->adapter; 2039 int cnt; 2040 2041 e->magic = EEPROM_MAGIC; 2042 cnt = pci_read_vpd(adapter->pdev, e->offset, e->len, data); 2043 if (cnt < 0) 2044 return cnt; 2045 2046 e->len = cnt; 2047 2048 return 0; 2049 } 2050 2051 static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, 2052 u8 * data) 2053 { 2054 struct port_info *pi = netdev_priv(dev); 2055 struct adapter *adapter = pi->adapter; 2056 u32 aligned_offset, aligned_len; 2057 u8 *buf; 2058 int err; 2059 2060 if (eeprom->magic != EEPROM_MAGIC) 2061 return -EINVAL; 2062 2063 aligned_offset = eeprom->offset & ~3; 2064 aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3; 2065 2066 if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) { 2067 buf = kmalloc(aligned_len, GFP_KERNEL); 2068 if (!buf) 2069 return -ENOMEM; 2070 err = pci_read_vpd(adapter->pdev, aligned_offset, aligned_len, 2071 buf); 2072 if (err < 0) 2073 goto out; 2074 memcpy(buf + (eeprom->offset & 3), data, eeprom->len); 2075 } else 2076 buf = data; 2077 2078 err = t3_seeprom_wp(adapter, 0); 2079 if (err) 2080 goto out; 2081 2082 err = pci_write_vpd(adapter->pdev, aligned_offset, aligned_len, buf); 2083 if (err >= 0) 2084 err = t3_seeprom_wp(adapter, 1); 2085 out: 2086 if (buf != data) 2087 kfree(buf); 2088 return err < 0 ? err : 0; 2089 } 2090 2091 static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 2092 { 2093 wol->supported = 0; 2094 wol->wolopts = 0; 2095 memset(&wol->sopass, 0, sizeof(wol->sopass)); 2096 } 2097 2098 static const struct ethtool_ops cxgb_ethtool_ops = { 2099 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS, 2100 .get_drvinfo = get_drvinfo, 2101 .get_msglevel = get_msglevel, 2102 .set_msglevel = set_msglevel, 2103 .get_ringparam = get_sge_param, 2104 .set_ringparam = set_sge_param, 2105 .get_coalesce = get_coalesce, 2106 .set_coalesce = set_coalesce, 2107 .get_eeprom_len = get_eeprom_len, 2108 .get_eeprom = get_eeprom, 2109 .set_eeprom = set_eeprom, 2110 .get_pauseparam = get_pauseparam, 2111 .set_pauseparam = set_pauseparam, 2112 .get_link = ethtool_op_get_link, 2113 .get_strings = get_strings, 2114 .set_phys_id = set_phys_id, 2115 .nway_reset = restart_autoneg, 2116 .get_sset_count = get_sset_count, 2117 .get_ethtool_stats = get_stats, 2118 .get_regs_len = get_regs_len, 2119 .get_regs = get_regs, 2120 .get_wol = get_wol, 2121 .get_link_ksettings = get_link_ksettings, 2122 .set_link_ksettings = set_link_ksettings, 2123 }; 2124 2125 static int in_range(int val, int lo, int hi) 2126 { 2127 return val < 0 || (val <= hi && val >= lo); 2128 } 2129 2130 static int cxgb_siocdevprivate(struct net_device *dev, 2131 struct ifreq *ifreq, 2132 void __user *useraddr, 2133 int cmd) 2134 { 2135 struct port_info *pi = netdev_priv(dev); 2136 struct adapter *adapter = pi->adapter; 2137 int ret; 2138 2139 if (cmd != SIOCCHIOCTL) 2140 return -EOPNOTSUPP; 2141 2142 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 2143 return -EFAULT; 2144 2145 switch (cmd) { 2146 case CHELSIO_SET_QSET_PARAMS:{ 2147 int i; 2148 struct qset_params *q; 2149 struct ch_qset_params t; 2150 int q1 = pi->first_qset; 2151 int nqsets = pi->nqsets; 2152 2153 if (!capable(CAP_NET_ADMIN)) 2154 return -EPERM; 2155 if (copy_from_user(&t, useraddr, sizeof(t))) 2156 return -EFAULT; 2157 if (t.cmd != CHELSIO_SET_QSET_PARAMS) 2158 return -EINVAL; 2159 if (t.qset_idx >= SGE_QSETS) 2160 return -EINVAL; 2161 if (!in_range(t.intr_lat, 0, M_NEWTIMER) || 2162 !in_range(t.cong_thres, 0, 255) || 2163 !in_range(t.txq_size[0], MIN_TXQ_ENTRIES, 2164 MAX_TXQ_ENTRIES) || 2165 !in_range(t.txq_size[1], MIN_TXQ_ENTRIES, 2166 MAX_TXQ_ENTRIES) || 2167 !in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES, 2168 MAX_CTRL_TXQ_ENTRIES) || 2169 !in_range(t.fl_size[0], MIN_FL_ENTRIES, 2170 MAX_RX_BUFFERS) || 2171 !in_range(t.fl_size[1], MIN_FL_ENTRIES, 2172 MAX_RX_JUMBO_BUFFERS) || 2173 !in_range(t.rspq_size, MIN_RSPQ_ENTRIES, 2174 MAX_RSPQ_ENTRIES)) 2175 return -EINVAL; 2176 2177 if ((adapter->flags & FULL_INIT_DONE) && 2178 (t.rspq_size >= 0 || t.fl_size[0] >= 0 || 2179 t.fl_size[1] >= 0 || t.txq_size[0] >= 0 || 2180 t.txq_size[1] >= 0 || t.txq_size[2] >= 0 || 2181 t.polling >= 0 || t.cong_thres >= 0)) 2182 return -EBUSY; 2183 2184 /* Allow setting of any available qset when offload enabled */ 2185 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2186 q1 = 0; 2187 for_each_port(adapter, i) { 2188 pi = adap2pinfo(adapter, i); 2189 nqsets += pi->first_qset + pi->nqsets; 2190 } 2191 } 2192 2193 if (t.qset_idx < q1) 2194 return -EINVAL; 2195 if (t.qset_idx > q1 + nqsets - 1) 2196 return -EINVAL; 2197 2198 q = &adapter->params.sge.qset[t.qset_idx]; 2199 2200 if (t.rspq_size >= 0) 2201 q->rspq_size = t.rspq_size; 2202 if (t.fl_size[0] >= 0) 2203 q->fl_size = t.fl_size[0]; 2204 if (t.fl_size[1] >= 0) 2205 q->jumbo_size = t.fl_size[1]; 2206 if (t.txq_size[0] >= 0) 2207 q->txq_size[0] = t.txq_size[0]; 2208 if (t.txq_size[1] >= 0) 2209 q->txq_size[1] = t.txq_size[1]; 2210 if (t.txq_size[2] >= 0) 2211 q->txq_size[2] = t.txq_size[2]; 2212 if (t.cong_thres >= 0) 2213 q->cong_thres = t.cong_thres; 2214 if (t.intr_lat >= 0) { 2215 struct sge_qset *qs = 2216 &adapter->sge.qs[t.qset_idx]; 2217 2218 q->coalesce_usecs = t.intr_lat; 2219 t3_update_qset_coalesce(qs, q); 2220 } 2221 if (t.polling >= 0) { 2222 if (adapter->flags & USING_MSIX) 2223 q->polling = t.polling; 2224 else { 2225 /* No polling with INTx for T3A */ 2226 if (adapter->params.rev == 0 && 2227 !(adapter->flags & USING_MSI)) 2228 t.polling = 0; 2229 2230 for (i = 0; i < SGE_QSETS; i++) { 2231 q = &adapter->params.sge. 2232 qset[i]; 2233 q->polling = t.polling; 2234 } 2235 } 2236 } 2237 2238 if (t.lro >= 0) { 2239 if (t.lro) 2240 dev->wanted_features |= NETIF_F_GRO; 2241 else 2242 dev->wanted_features &= ~NETIF_F_GRO; 2243 netdev_update_features(dev); 2244 } 2245 2246 break; 2247 } 2248 case CHELSIO_GET_QSET_PARAMS:{ 2249 struct qset_params *q; 2250 struct ch_qset_params t; 2251 int q1 = pi->first_qset; 2252 int nqsets = pi->nqsets; 2253 int i; 2254 2255 if (copy_from_user(&t, useraddr, sizeof(t))) 2256 return -EFAULT; 2257 2258 if (t.cmd != CHELSIO_GET_QSET_PARAMS) 2259 return -EINVAL; 2260 2261 /* Display qsets for all ports when offload enabled */ 2262 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2263 q1 = 0; 2264 for_each_port(adapter, i) { 2265 pi = adap2pinfo(adapter, i); 2266 nqsets = pi->first_qset + pi->nqsets; 2267 } 2268 } 2269 2270 if (t.qset_idx >= nqsets) 2271 return -EINVAL; 2272 t.qset_idx = array_index_nospec(t.qset_idx, nqsets); 2273 2274 q = &adapter->params.sge.qset[q1 + t.qset_idx]; 2275 t.rspq_size = q->rspq_size; 2276 t.txq_size[0] = q->txq_size[0]; 2277 t.txq_size[1] = q->txq_size[1]; 2278 t.txq_size[2] = q->txq_size[2]; 2279 t.fl_size[0] = q->fl_size; 2280 t.fl_size[1] = q->jumbo_size; 2281 t.polling = q->polling; 2282 t.lro = !!(dev->features & NETIF_F_GRO); 2283 t.intr_lat = q->coalesce_usecs; 2284 t.cong_thres = q->cong_thres; 2285 t.qnum = q1; 2286 2287 if (adapter->flags & USING_MSIX) 2288 t.vector = adapter->msix_info[q1 + t.qset_idx + 1].vec; 2289 else 2290 t.vector = adapter->pdev->irq; 2291 2292 if (copy_to_user(useraddr, &t, sizeof(t))) 2293 return -EFAULT; 2294 break; 2295 } 2296 case CHELSIO_SET_QSET_NUM:{ 2297 struct ch_reg edata; 2298 unsigned int i, first_qset = 0, other_qsets = 0; 2299 2300 if (!capable(CAP_NET_ADMIN)) 2301 return -EPERM; 2302 if (adapter->flags & FULL_INIT_DONE) 2303 return -EBUSY; 2304 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2305 return -EFAULT; 2306 if (edata.cmd != CHELSIO_SET_QSET_NUM) 2307 return -EINVAL; 2308 if (edata.val < 1 || 2309 (edata.val > 1 && !(adapter->flags & USING_MSIX))) 2310 return -EINVAL; 2311 2312 for_each_port(adapter, i) 2313 if (adapter->port[i] && adapter->port[i] != dev) 2314 other_qsets += adap2pinfo(adapter, i)->nqsets; 2315 2316 if (edata.val + other_qsets > SGE_QSETS) 2317 return -EINVAL; 2318 2319 pi->nqsets = edata.val; 2320 2321 for_each_port(adapter, i) 2322 if (adapter->port[i]) { 2323 pi = adap2pinfo(adapter, i); 2324 pi->first_qset = first_qset; 2325 first_qset += pi->nqsets; 2326 } 2327 break; 2328 } 2329 case CHELSIO_GET_QSET_NUM:{ 2330 struct ch_reg edata; 2331 2332 memset(&edata, 0, sizeof(struct ch_reg)); 2333 2334 edata.cmd = CHELSIO_GET_QSET_NUM; 2335 edata.val = pi->nqsets; 2336 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2337 return -EFAULT; 2338 break; 2339 } 2340 case CHELSIO_LOAD_FW:{ 2341 u8 *fw_data; 2342 struct ch_mem_range t; 2343 2344 if (!capable(CAP_SYS_RAWIO)) 2345 return -EPERM; 2346 if (copy_from_user(&t, useraddr, sizeof(t))) 2347 return -EFAULT; 2348 if (t.cmd != CHELSIO_LOAD_FW) 2349 return -EINVAL; 2350 /* Check t.len sanity ? */ 2351 fw_data = memdup_user(useraddr + sizeof(t), t.len); 2352 if (IS_ERR(fw_data)) 2353 return PTR_ERR(fw_data); 2354 2355 ret = t3_load_fw(adapter, fw_data, t.len); 2356 kfree(fw_data); 2357 if (ret) 2358 return ret; 2359 break; 2360 } 2361 case CHELSIO_SETMTUTAB:{ 2362 struct ch_mtus m; 2363 int i; 2364 2365 if (!is_offload(adapter)) 2366 return -EOPNOTSUPP; 2367 if (!capable(CAP_NET_ADMIN)) 2368 return -EPERM; 2369 if (offload_running(adapter)) 2370 return -EBUSY; 2371 if (copy_from_user(&m, useraddr, sizeof(m))) 2372 return -EFAULT; 2373 if (m.cmd != CHELSIO_SETMTUTAB) 2374 return -EINVAL; 2375 if (m.nmtus != NMTUS) 2376 return -EINVAL; 2377 if (m.mtus[0] < 81) /* accommodate SACK */ 2378 return -EINVAL; 2379 2380 /* MTUs must be in ascending order */ 2381 for (i = 1; i < NMTUS; ++i) 2382 if (m.mtus[i] < m.mtus[i - 1]) 2383 return -EINVAL; 2384 2385 memcpy(adapter->params.mtus, m.mtus, 2386 sizeof(adapter->params.mtus)); 2387 break; 2388 } 2389 case CHELSIO_GET_PM:{ 2390 struct tp_params *p = &adapter->params.tp; 2391 struct ch_pm m = {.cmd = CHELSIO_GET_PM }; 2392 2393 if (!is_offload(adapter)) 2394 return -EOPNOTSUPP; 2395 m.tx_pg_sz = p->tx_pg_size; 2396 m.tx_num_pg = p->tx_num_pgs; 2397 m.rx_pg_sz = p->rx_pg_size; 2398 m.rx_num_pg = p->rx_num_pgs; 2399 m.pm_total = p->pmtx_size + p->chan_rx_size * p->nchan; 2400 if (copy_to_user(useraddr, &m, sizeof(m))) 2401 return -EFAULT; 2402 break; 2403 } 2404 case CHELSIO_SET_PM:{ 2405 struct ch_pm m; 2406 struct tp_params *p = &adapter->params.tp; 2407 2408 if (!is_offload(adapter)) 2409 return -EOPNOTSUPP; 2410 if (!capable(CAP_NET_ADMIN)) 2411 return -EPERM; 2412 if (adapter->flags & FULL_INIT_DONE) 2413 return -EBUSY; 2414 if (copy_from_user(&m, useraddr, sizeof(m))) 2415 return -EFAULT; 2416 if (m.cmd != CHELSIO_SET_PM) 2417 return -EINVAL; 2418 if (!is_power_of_2(m.rx_pg_sz) || 2419 !is_power_of_2(m.tx_pg_sz)) 2420 return -EINVAL; /* not power of 2 */ 2421 if (!(m.rx_pg_sz & 0x14000)) 2422 return -EINVAL; /* not 16KB or 64KB */ 2423 if (!(m.tx_pg_sz & 0x1554000)) 2424 return -EINVAL; 2425 if (m.tx_num_pg == -1) 2426 m.tx_num_pg = p->tx_num_pgs; 2427 if (m.rx_num_pg == -1) 2428 m.rx_num_pg = p->rx_num_pgs; 2429 if (m.tx_num_pg % 24 || m.rx_num_pg % 24) 2430 return -EINVAL; 2431 if (m.rx_num_pg * m.rx_pg_sz > p->chan_rx_size || 2432 m.tx_num_pg * m.tx_pg_sz > p->chan_tx_size) 2433 return -EINVAL; 2434 p->rx_pg_size = m.rx_pg_sz; 2435 p->tx_pg_size = m.tx_pg_sz; 2436 p->rx_num_pgs = m.rx_num_pg; 2437 p->tx_num_pgs = m.tx_num_pg; 2438 break; 2439 } 2440 case CHELSIO_GET_MEM:{ 2441 struct ch_mem_range t; 2442 struct mc7 *mem; 2443 u64 buf[32]; 2444 2445 if (!is_offload(adapter)) 2446 return -EOPNOTSUPP; 2447 if (!capable(CAP_NET_ADMIN)) 2448 return -EPERM; 2449 if (!(adapter->flags & FULL_INIT_DONE)) 2450 return -EIO; /* need the memory controllers */ 2451 if (copy_from_user(&t, useraddr, sizeof(t))) 2452 return -EFAULT; 2453 if (t.cmd != CHELSIO_GET_MEM) 2454 return -EINVAL; 2455 if ((t.addr & 7) || (t.len & 7)) 2456 return -EINVAL; 2457 if (t.mem_id == MEM_CM) 2458 mem = &adapter->cm; 2459 else if (t.mem_id == MEM_PMRX) 2460 mem = &adapter->pmrx; 2461 else if (t.mem_id == MEM_PMTX) 2462 mem = &adapter->pmtx; 2463 else 2464 return -EINVAL; 2465 2466 /* 2467 * Version scheme: 2468 * bits 0..9: chip version 2469 * bits 10..15: chip revision 2470 */ 2471 t.version = 3 | (adapter->params.rev << 10); 2472 if (copy_to_user(useraddr, &t, sizeof(t))) 2473 return -EFAULT; 2474 2475 /* 2476 * Read 256 bytes at a time as len can be large and we don't 2477 * want to use huge intermediate buffers. 2478 */ 2479 useraddr += sizeof(t); /* advance to start of buffer */ 2480 while (t.len) { 2481 unsigned int chunk = 2482 min_t(unsigned int, t.len, sizeof(buf)); 2483 2484 ret = 2485 t3_mc7_bd_read(mem, t.addr / 8, chunk / 8, 2486 buf); 2487 if (ret) 2488 return ret; 2489 if (copy_to_user(useraddr, buf, chunk)) 2490 return -EFAULT; 2491 useraddr += chunk; 2492 t.addr += chunk; 2493 t.len -= chunk; 2494 } 2495 break; 2496 } 2497 case CHELSIO_SET_TRACE_FILTER:{ 2498 struct ch_trace t; 2499 const struct trace_params *tp; 2500 2501 if (!capable(CAP_NET_ADMIN)) 2502 return -EPERM; 2503 if (!offload_running(adapter)) 2504 return -EAGAIN; 2505 if (copy_from_user(&t, useraddr, sizeof(t))) 2506 return -EFAULT; 2507 if (t.cmd != CHELSIO_SET_TRACE_FILTER) 2508 return -EINVAL; 2509 2510 tp = (const struct trace_params *)&t.sip; 2511 if (t.config_tx) 2512 t3_config_trace_filter(adapter, tp, 0, 2513 t.invert_match, 2514 t.trace_tx); 2515 if (t.config_rx) 2516 t3_config_trace_filter(adapter, tp, 1, 2517 t.invert_match, 2518 t.trace_rx); 2519 break; 2520 } 2521 default: 2522 return -EOPNOTSUPP; 2523 } 2524 return 0; 2525 } 2526 2527 static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 2528 { 2529 struct mii_ioctl_data *data = if_mii(req); 2530 struct port_info *pi = netdev_priv(dev); 2531 struct adapter *adapter = pi->adapter; 2532 2533 switch (cmd) { 2534 case SIOCGMIIREG: 2535 case SIOCSMIIREG: 2536 /* Convert phy_id from older PRTAD/DEVAD format */ 2537 if (is_10G(adapter) && 2538 !mdio_phy_id_is_c45(data->phy_id) && 2539 (data->phy_id & 0x1f00) && 2540 !(data->phy_id & 0xe0e0)) 2541 data->phy_id = mdio_phy_id_c45(data->phy_id >> 8, 2542 data->phy_id & 0x1f); 2543 fallthrough; 2544 case SIOCGMIIPHY: 2545 return mdio_mii_ioctl(&pi->phy.mdio, data, cmd); 2546 default: 2547 return -EOPNOTSUPP; 2548 } 2549 } 2550 2551 static int cxgb_change_mtu(struct net_device *dev, int new_mtu) 2552 { 2553 struct port_info *pi = netdev_priv(dev); 2554 struct adapter *adapter = pi->adapter; 2555 int ret; 2556 2557 if ((ret = t3_mac_set_mtu(&pi->mac, new_mtu))) 2558 return ret; 2559 dev->mtu = new_mtu; 2560 init_port_mtus(adapter); 2561 if (adapter->params.rev == 0 && offload_running(adapter)) 2562 t3_load_mtus(adapter, adapter->params.mtus, 2563 adapter->params.a_wnd, adapter->params.b_wnd, 2564 adapter->port[0]->mtu); 2565 return 0; 2566 } 2567 2568 static int cxgb_set_mac_addr(struct net_device *dev, void *p) 2569 { 2570 struct port_info *pi = netdev_priv(dev); 2571 struct adapter *adapter = pi->adapter; 2572 struct sockaddr *addr = p; 2573 2574 if (!is_valid_ether_addr(addr->sa_data)) 2575 return -EADDRNOTAVAIL; 2576 2577 eth_hw_addr_set(dev, addr->sa_data); 2578 t3_mac_set_address(&pi->mac, LAN_MAC_IDX, dev->dev_addr); 2579 if (offload_running(adapter)) 2580 write_smt_entry(adapter, pi->port_id); 2581 return 0; 2582 } 2583 2584 static netdev_features_t cxgb_fix_features(struct net_device *dev, 2585 netdev_features_t features) 2586 { 2587 /* 2588 * Since there is no support for separate rx/tx vlan accel 2589 * enable/disable make sure tx flag is always in same state as rx. 2590 */ 2591 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2592 features |= NETIF_F_HW_VLAN_CTAG_TX; 2593 else 2594 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2595 2596 return features; 2597 } 2598 2599 static int cxgb_set_features(struct net_device *dev, netdev_features_t features) 2600 { 2601 netdev_features_t changed = dev->features ^ features; 2602 2603 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 2604 cxgb_vlan_mode(dev, features); 2605 2606 return 0; 2607 } 2608 2609 #ifdef CONFIG_NET_POLL_CONTROLLER 2610 static void cxgb_netpoll(struct net_device *dev) 2611 { 2612 struct port_info *pi = netdev_priv(dev); 2613 struct adapter *adapter = pi->adapter; 2614 int qidx; 2615 2616 for (qidx = pi->first_qset; qidx < pi->first_qset + pi->nqsets; qidx++) { 2617 struct sge_qset *qs = &adapter->sge.qs[qidx]; 2618 void *source; 2619 2620 if (adapter->flags & USING_MSIX) 2621 source = qs; 2622 else 2623 source = adapter; 2624 2625 t3_intr_handler(adapter, qs->rspq.polling) (0, source); 2626 } 2627 } 2628 #endif 2629 2630 /* 2631 * Periodic accumulation of MAC statistics. 2632 */ 2633 static void mac_stats_update(struct adapter *adapter) 2634 { 2635 int i; 2636 2637 for_each_port(adapter, i) { 2638 struct net_device *dev = adapter->port[i]; 2639 struct port_info *p = netdev_priv(dev); 2640 2641 if (netif_running(dev)) { 2642 spin_lock(&adapter->stats_lock); 2643 t3_mac_update_stats(&p->mac); 2644 spin_unlock(&adapter->stats_lock); 2645 } 2646 } 2647 } 2648 2649 static void check_link_status(struct adapter *adapter) 2650 { 2651 int i; 2652 2653 for_each_port(adapter, i) { 2654 struct net_device *dev = adapter->port[i]; 2655 struct port_info *p = netdev_priv(dev); 2656 int link_fault; 2657 2658 spin_lock_irq(&adapter->work_lock); 2659 link_fault = p->link_fault; 2660 spin_unlock_irq(&adapter->work_lock); 2661 2662 if (link_fault) { 2663 t3_link_fault(adapter, i); 2664 continue; 2665 } 2666 2667 if (!(p->phy.caps & SUPPORTED_IRQ) && netif_running(dev)) { 2668 t3_xgm_intr_disable(adapter, i); 2669 t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset); 2670 2671 t3_link_changed(adapter, i); 2672 t3_xgm_intr_enable(adapter, i); 2673 } 2674 } 2675 } 2676 2677 static void check_t3b2_mac(struct adapter *adapter) 2678 { 2679 int i; 2680 2681 if (!rtnl_trylock()) /* synchronize with ifdown */ 2682 return; 2683 2684 for_each_port(adapter, i) { 2685 struct net_device *dev = adapter->port[i]; 2686 struct port_info *p = netdev_priv(dev); 2687 int status; 2688 2689 if (!netif_running(dev)) 2690 continue; 2691 2692 status = 0; 2693 if (netif_running(dev) && netif_carrier_ok(dev)) 2694 status = t3b2_mac_watchdog_task(&p->mac); 2695 if (status == 1) 2696 p->mac.stats.num_toggled++; 2697 else if (status == 2) { 2698 struct cmac *mac = &p->mac; 2699 2700 t3_mac_set_mtu(mac, dev->mtu); 2701 t3_mac_set_address(mac, LAN_MAC_IDX, dev->dev_addr); 2702 cxgb_set_rxmode(dev); 2703 t3_link_start(&p->phy, mac, &p->link_config); 2704 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); 2705 t3_port_intr_enable(adapter, p->port_id); 2706 p->mac.stats.num_resets++; 2707 } 2708 } 2709 rtnl_unlock(); 2710 } 2711 2712 2713 static void t3_adap_check_task(struct work_struct *work) 2714 { 2715 struct adapter *adapter = container_of(work, struct adapter, 2716 adap_check_task.work); 2717 const struct adapter_params *p = &adapter->params; 2718 int port; 2719 unsigned int v, status, reset; 2720 2721 adapter->check_task_cnt++; 2722 2723 check_link_status(adapter); 2724 2725 /* Accumulate MAC stats if needed */ 2726 if (!p->linkpoll_period || 2727 (adapter->check_task_cnt * p->linkpoll_period) / 10 >= 2728 p->stats_update_period) { 2729 mac_stats_update(adapter); 2730 adapter->check_task_cnt = 0; 2731 } 2732 2733 if (p->rev == T3_REV_B2) 2734 check_t3b2_mac(adapter); 2735 2736 /* 2737 * Scan the XGMAC's to check for various conditions which we want to 2738 * monitor in a periodic polling manner rather than via an interrupt 2739 * condition. This is used for conditions which would otherwise flood 2740 * the system with interrupts and we only really need to know that the 2741 * conditions are "happening" ... For each condition we count the 2742 * detection of the condition and reset it for the next polling loop. 2743 */ 2744 for_each_port(adapter, port) { 2745 struct cmac *mac = &adap2pinfo(adapter, port)->mac; 2746 u32 cause; 2747 2748 cause = t3_read_reg(adapter, A_XGM_INT_CAUSE + mac->offset); 2749 reset = 0; 2750 if (cause & F_RXFIFO_OVERFLOW) { 2751 mac->stats.rx_fifo_ovfl++; 2752 reset |= F_RXFIFO_OVERFLOW; 2753 } 2754 2755 t3_write_reg(adapter, A_XGM_INT_CAUSE + mac->offset, reset); 2756 } 2757 2758 /* 2759 * We do the same as above for FL_EMPTY interrupts. 2760 */ 2761 status = t3_read_reg(adapter, A_SG_INT_CAUSE); 2762 reset = 0; 2763 2764 if (status & F_FLEMPTY) { 2765 struct sge_qset *qs = &adapter->sge.qs[0]; 2766 int i = 0; 2767 2768 reset |= F_FLEMPTY; 2769 2770 v = (t3_read_reg(adapter, A_SG_RSPQ_FL_STATUS) >> S_FL0EMPTY) & 2771 0xffff; 2772 2773 while (v) { 2774 qs->fl[i].empty += (v & 1); 2775 if (i) 2776 qs++; 2777 i ^= 1; 2778 v >>= 1; 2779 } 2780 } 2781 2782 t3_write_reg(adapter, A_SG_INT_CAUSE, reset); 2783 2784 /* Schedule the next check update if any port is active. */ 2785 spin_lock_irq(&adapter->work_lock); 2786 if (adapter->open_device_map & PORT_MASK) 2787 schedule_chk_task(adapter); 2788 spin_unlock_irq(&adapter->work_lock); 2789 } 2790 2791 static void db_full_task(struct work_struct *work) 2792 { 2793 struct adapter *adapter = container_of(work, struct adapter, 2794 db_full_task); 2795 2796 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_FULL, 0); 2797 } 2798 2799 static void db_empty_task(struct work_struct *work) 2800 { 2801 struct adapter *adapter = container_of(work, struct adapter, 2802 db_empty_task); 2803 2804 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_EMPTY, 0); 2805 } 2806 2807 static void db_drop_task(struct work_struct *work) 2808 { 2809 struct adapter *adapter = container_of(work, struct adapter, 2810 db_drop_task); 2811 unsigned long delay = 1000; 2812 unsigned short r; 2813 2814 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_DROP, 0); 2815 2816 /* 2817 * Sleep a while before ringing the driver qset dbs. 2818 * The delay is between 1000-2023 usecs. 2819 */ 2820 get_random_bytes(&r, 2); 2821 delay += r & 1023; 2822 set_current_state(TASK_UNINTERRUPTIBLE); 2823 schedule_timeout(usecs_to_jiffies(delay)); 2824 ring_dbs(adapter); 2825 } 2826 2827 /* 2828 * Processes external (PHY) interrupts in process context. 2829 */ 2830 static void ext_intr_task(struct work_struct *work) 2831 { 2832 struct adapter *adapter = container_of(work, struct adapter, 2833 ext_intr_handler_task); 2834 int i; 2835 2836 /* Disable link fault interrupts */ 2837 for_each_port(adapter, i) { 2838 struct net_device *dev = adapter->port[i]; 2839 struct port_info *p = netdev_priv(dev); 2840 2841 t3_xgm_intr_disable(adapter, i); 2842 t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset); 2843 } 2844 2845 /* Re-enable link fault interrupts */ 2846 t3_phy_intr_handler(adapter); 2847 2848 for_each_port(adapter, i) 2849 t3_xgm_intr_enable(adapter, i); 2850 2851 /* Now reenable external interrupts */ 2852 spin_lock_irq(&adapter->work_lock); 2853 if (adapter->slow_intr_mask) { 2854 adapter->slow_intr_mask |= F_T3DBG; 2855 t3_write_reg(adapter, A_PL_INT_CAUSE0, F_T3DBG); 2856 t3_write_reg(adapter, A_PL_INT_ENABLE0, 2857 adapter->slow_intr_mask); 2858 } 2859 spin_unlock_irq(&adapter->work_lock); 2860 } 2861 2862 /* 2863 * Interrupt-context handler for external (PHY) interrupts. 2864 */ 2865 void t3_os_ext_intr_handler(struct adapter *adapter) 2866 { 2867 /* 2868 * Schedule a task to handle external interrupts as they may be slow 2869 * and we use a mutex to protect MDIO registers. We disable PHY 2870 * interrupts in the meantime and let the task reenable them when 2871 * it's done. 2872 */ 2873 spin_lock(&adapter->work_lock); 2874 if (adapter->slow_intr_mask) { 2875 adapter->slow_intr_mask &= ~F_T3DBG; 2876 t3_write_reg(adapter, A_PL_INT_ENABLE0, 2877 adapter->slow_intr_mask); 2878 queue_work(cxgb3_wq, &adapter->ext_intr_handler_task); 2879 } 2880 spin_unlock(&adapter->work_lock); 2881 } 2882 2883 void t3_os_link_fault_handler(struct adapter *adapter, int port_id) 2884 { 2885 struct net_device *netdev = adapter->port[port_id]; 2886 struct port_info *pi = netdev_priv(netdev); 2887 2888 spin_lock(&adapter->work_lock); 2889 pi->link_fault = 1; 2890 spin_unlock(&adapter->work_lock); 2891 } 2892 2893 static int t3_adapter_error(struct adapter *adapter, int reset, int on_wq) 2894 { 2895 int i, ret = 0; 2896 2897 if (is_offload(adapter) && 2898 test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2899 cxgb3_event_notify(&adapter->tdev, OFFLOAD_STATUS_DOWN, 0); 2900 offload_close(&adapter->tdev); 2901 } 2902 2903 /* Stop all ports */ 2904 for_each_port(adapter, i) { 2905 struct net_device *netdev = adapter->port[i]; 2906 2907 if (netif_running(netdev)) 2908 __cxgb_close(netdev, on_wq); 2909 } 2910 2911 /* Stop SGE timers */ 2912 t3_stop_sge_timers(adapter); 2913 2914 adapter->flags &= ~FULL_INIT_DONE; 2915 2916 if (reset) 2917 ret = t3_reset_adapter(adapter); 2918 2919 pci_disable_device(adapter->pdev); 2920 2921 return ret; 2922 } 2923 2924 static int t3_reenable_adapter(struct adapter *adapter) 2925 { 2926 if (pci_enable_device(adapter->pdev)) { 2927 dev_err(&adapter->pdev->dev, 2928 "Cannot re-enable PCI device after reset.\n"); 2929 goto err; 2930 } 2931 pci_set_master(adapter->pdev); 2932 pci_restore_state(adapter->pdev); 2933 pci_save_state(adapter->pdev); 2934 2935 /* Free sge resources */ 2936 t3_free_sge_resources(adapter); 2937 2938 if (t3_replay_prep_adapter(adapter)) 2939 goto err; 2940 2941 return 0; 2942 err: 2943 return -1; 2944 } 2945 2946 static void t3_resume_ports(struct adapter *adapter) 2947 { 2948 int i; 2949 2950 /* Restart the ports */ 2951 for_each_port(adapter, i) { 2952 struct net_device *netdev = adapter->port[i]; 2953 2954 if (netif_running(netdev)) { 2955 if (cxgb_open(netdev)) { 2956 dev_err(&adapter->pdev->dev, 2957 "can't bring device back up" 2958 " after reset\n"); 2959 continue; 2960 } 2961 } 2962 } 2963 2964 if (is_offload(adapter) && !ofld_disable) 2965 cxgb3_event_notify(&adapter->tdev, OFFLOAD_STATUS_UP, 0); 2966 } 2967 2968 /* 2969 * processes a fatal error. 2970 * Bring the ports down, reset the chip, bring the ports back up. 2971 */ 2972 static void fatal_error_task(struct work_struct *work) 2973 { 2974 struct adapter *adapter = container_of(work, struct adapter, 2975 fatal_error_handler_task); 2976 int err = 0; 2977 2978 rtnl_lock(); 2979 err = t3_adapter_error(adapter, 1, 1); 2980 if (!err) 2981 err = t3_reenable_adapter(adapter); 2982 if (!err) 2983 t3_resume_ports(adapter); 2984 2985 CH_ALERT(adapter, "adapter reset %s\n", err ? "failed" : "succeeded"); 2986 rtnl_unlock(); 2987 } 2988 2989 void t3_fatal_err(struct adapter *adapter) 2990 { 2991 unsigned int fw_status[4]; 2992 2993 if (adapter->flags & FULL_INIT_DONE) { 2994 t3_sge_stop_dma(adapter); 2995 t3_write_reg(adapter, A_XGM_TX_CTRL, 0); 2996 t3_write_reg(adapter, A_XGM_RX_CTRL, 0); 2997 t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0); 2998 t3_write_reg(adapter, XGM_REG(A_XGM_RX_CTRL, 1), 0); 2999 3000 spin_lock(&adapter->work_lock); 3001 t3_intr_disable(adapter); 3002 queue_work(cxgb3_wq, &adapter->fatal_error_handler_task); 3003 spin_unlock(&adapter->work_lock); 3004 } 3005 CH_ALERT(adapter, "encountered fatal error, operation suspended\n"); 3006 if (!t3_cim_ctl_blk_read(adapter, 0xa0, 4, fw_status)) 3007 CH_ALERT(adapter, "FW status: 0x%x, 0x%x, 0x%x, 0x%x\n", 3008 fw_status[0], fw_status[1], 3009 fw_status[2], fw_status[3]); 3010 } 3011 3012 /** 3013 * t3_io_error_detected - called when PCI error is detected 3014 * @pdev: Pointer to PCI device 3015 * @state: The current pci connection state 3016 * 3017 * This function is called after a PCI bus error affecting 3018 * this device has been detected. 3019 */ 3020 static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev, 3021 pci_channel_state_t state) 3022 { 3023 struct adapter *adapter = pci_get_drvdata(pdev); 3024 3025 if (state == pci_channel_io_perm_failure) 3026 return PCI_ERS_RESULT_DISCONNECT; 3027 3028 t3_adapter_error(adapter, 0, 0); 3029 3030 /* Request a slot reset. */ 3031 return PCI_ERS_RESULT_NEED_RESET; 3032 } 3033 3034 /** 3035 * t3_io_slot_reset - called after the pci bus has been reset. 3036 * @pdev: Pointer to PCI device 3037 * 3038 * Restart the card from scratch, as if from a cold-boot. 3039 */ 3040 static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev) 3041 { 3042 struct adapter *adapter = pci_get_drvdata(pdev); 3043 3044 if (!t3_reenable_adapter(adapter)) 3045 return PCI_ERS_RESULT_RECOVERED; 3046 3047 return PCI_ERS_RESULT_DISCONNECT; 3048 } 3049 3050 /** 3051 * t3_io_resume - called when traffic can start flowing again. 3052 * @pdev: Pointer to PCI device 3053 * 3054 * This callback is called when the error recovery driver tells us that 3055 * its OK to resume normal operation. 3056 */ 3057 static void t3_io_resume(struct pci_dev *pdev) 3058 { 3059 struct adapter *adapter = pci_get_drvdata(pdev); 3060 3061 CH_ALERT(adapter, "adapter recovering, PEX ERR 0x%x\n", 3062 t3_read_reg(adapter, A_PCIE_PEX_ERR)); 3063 3064 rtnl_lock(); 3065 t3_resume_ports(adapter); 3066 rtnl_unlock(); 3067 } 3068 3069 static const struct pci_error_handlers t3_err_handler = { 3070 .error_detected = t3_io_error_detected, 3071 .slot_reset = t3_io_slot_reset, 3072 .resume = t3_io_resume, 3073 }; 3074 3075 /* 3076 * Set the number of qsets based on the number of CPUs and the number of ports, 3077 * not to exceed the number of available qsets, assuming there are enough qsets 3078 * per port in HW. 3079 */ 3080 static void set_nqsets(struct adapter *adap) 3081 { 3082 int i, j = 0; 3083 int num_cpus = netif_get_num_default_rss_queues(); 3084 int hwports = adap->params.nports; 3085 int nqsets = adap->msix_nvectors - 1; 3086 3087 if (adap->params.rev > 0 && adap->flags & USING_MSIX) { 3088 if (hwports == 2 && 3089 (hwports * nqsets > SGE_QSETS || 3090 num_cpus >= nqsets / hwports)) 3091 nqsets /= hwports; 3092 if (nqsets > num_cpus) 3093 nqsets = num_cpus; 3094 if (nqsets < 1 || hwports == 4) 3095 nqsets = 1; 3096 } else { 3097 nqsets = 1; 3098 } 3099 3100 for_each_port(adap, i) { 3101 struct port_info *pi = adap2pinfo(adap, i); 3102 3103 pi->first_qset = j; 3104 pi->nqsets = nqsets; 3105 j = pi->first_qset + nqsets; 3106 3107 dev_info(&adap->pdev->dev, 3108 "Port %d using %d queue sets.\n", i, nqsets); 3109 } 3110 } 3111 3112 static int cxgb_enable_msix(struct adapter *adap) 3113 { 3114 struct msix_entry entries[SGE_QSETS + 1]; 3115 int vectors; 3116 int i; 3117 3118 vectors = ARRAY_SIZE(entries); 3119 for (i = 0; i < vectors; ++i) 3120 entries[i].entry = i; 3121 3122 vectors = pci_enable_msix_range(adap->pdev, entries, 3123 adap->params.nports + 1, vectors); 3124 if (vectors < 0) 3125 return vectors; 3126 3127 for (i = 0; i < vectors; ++i) 3128 adap->msix_info[i].vec = entries[i].vector; 3129 adap->msix_nvectors = vectors; 3130 3131 return 0; 3132 } 3133 3134 static void print_port_info(struct adapter *adap, const struct adapter_info *ai) 3135 { 3136 static const char *pci_variant[] = { 3137 "PCI", "PCI-X", "PCI-X ECC", "PCI-X 266", "PCI Express" 3138 }; 3139 3140 int i; 3141 char buf[80]; 3142 3143 if (is_pcie(adap)) 3144 snprintf(buf, sizeof(buf), "%s x%d", 3145 pci_variant[adap->params.pci.variant], 3146 adap->params.pci.width); 3147 else 3148 snprintf(buf, sizeof(buf), "%s %dMHz/%d-bit", 3149 pci_variant[adap->params.pci.variant], 3150 adap->params.pci.speed, adap->params.pci.width); 3151 3152 for_each_port(adap, i) { 3153 struct net_device *dev = adap->port[i]; 3154 const struct port_info *pi = netdev_priv(dev); 3155 3156 if (!test_bit(i, &adap->registered_device_map)) 3157 continue; 3158 netdev_info(dev, "%s %s %sNIC (rev %d) %s%s\n", 3159 ai->desc, pi->phy.desc, 3160 is_offload(adap) ? "R" : "", adap->params.rev, buf, 3161 (adap->flags & USING_MSIX) ? " MSI-X" : 3162 (adap->flags & USING_MSI) ? " MSI" : ""); 3163 if (adap->name == dev->name && adap->params.vpd.mclk) 3164 pr_info("%s: %uMB CM, %uMB PMTX, %uMB PMRX, S/N: %s\n", 3165 adap->name, t3_mc7_size(&adap->cm) >> 20, 3166 t3_mc7_size(&adap->pmtx) >> 20, 3167 t3_mc7_size(&adap->pmrx) >> 20, 3168 adap->params.vpd.sn); 3169 } 3170 } 3171 3172 static const struct net_device_ops cxgb_netdev_ops = { 3173 .ndo_open = cxgb_open, 3174 .ndo_stop = cxgb_close, 3175 .ndo_start_xmit = t3_eth_xmit, 3176 .ndo_get_stats = cxgb_get_stats, 3177 .ndo_validate_addr = eth_validate_addr, 3178 .ndo_set_rx_mode = cxgb_set_rxmode, 3179 .ndo_eth_ioctl = cxgb_ioctl, 3180 .ndo_siocdevprivate = cxgb_siocdevprivate, 3181 .ndo_change_mtu = cxgb_change_mtu, 3182 .ndo_set_mac_address = cxgb_set_mac_addr, 3183 .ndo_fix_features = cxgb_fix_features, 3184 .ndo_set_features = cxgb_set_features, 3185 #ifdef CONFIG_NET_POLL_CONTROLLER 3186 .ndo_poll_controller = cxgb_netpoll, 3187 #endif 3188 }; 3189 3190 static void cxgb3_init_iscsi_mac(struct net_device *dev) 3191 { 3192 struct port_info *pi = netdev_priv(dev); 3193 3194 memcpy(pi->iscsic.mac_addr, dev->dev_addr, ETH_ALEN); 3195 pi->iscsic.mac_addr[3] |= 0x80; 3196 } 3197 3198 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) 3199 #define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \ 3200 NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA) 3201 static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 3202 { 3203 int i, err, pci_using_dac = 0; 3204 resource_size_t mmio_start, mmio_len; 3205 const struct adapter_info *ai; 3206 struct adapter *adapter = NULL; 3207 struct port_info *pi; 3208 3209 if (!cxgb3_wq) { 3210 cxgb3_wq = create_singlethread_workqueue(DRV_NAME); 3211 if (!cxgb3_wq) { 3212 pr_err("cannot initialize work queue\n"); 3213 return -ENOMEM; 3214 } 3215 } 3216 3217 err = pci_enable_device(pdev); 3218 if (err) { 3219 dev_err(&pdev->dev, "cannot enable PCI device\n"); 3220 goto out; 3221 } 3222 3223 err = pci_request_regions(pdev, DRV_NAME); 3224 if (err) { 3225 /* Just info, some other driver may have claimed the device. */ 3226 dev_info(&pdev->dev, "cannot obtain PCI resources\n"); 3227 goto out_disable_device; 3228 } 3229 3230 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { 3231 pci_using_dac = 1; 3232 } else if ((err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) != 0) { 3233 dev_err(&pdev->dev, "no usable DMA configuration\n"); 3234 goto out_release_regions; 3235 } 3236 3237 pci_set_master(pdev); 3238 pci_save_state(pdev); 3239 3240 mmio_start = pci_resource_start(pdev, 0); 3241 mmio_len = pci_resource_len(pdev, 0); 3242 ai = t3_get_adapter_info(ent->driver_data); 3243 3244 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); 3245 if (!adapter) { 3246 err = -ENOMEM; 3247 goto out_release_regions; 3248 } 3249 3250 adapter->nofail_skb = 3251 alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_KERNEL); 3252 if (!adapter->nofail_skb) { 3253 dev_err(&pdev->dev, "cannot allocate nofail buffer\n"); 3254 err = -ENOMEM; 3255 goto out_free_adapter; 3256 } 3257 3258 adapter->regs = ioremap(mmio_start, mmio_len); 3259 if (!adapter->regs) { 3260 dev_err(&pdev->dev, "cannot map device registers\n"); 3261 err = -ENOMEM; 3262 goto out_free_adapter_nofail; 3263 } 3264 3265 adapter->pdev = pdev; 3266 adapter->name = pci_name(pdev); 3267 adapter->msg_enable = dflt_msg_enable; 3268 adapter->mmio_len = mmio_len; 3269 3270 mutex_init(&adapter->mdio_lock); 3271 spin_lock_init(&adapter->work_lock); 3272 spin_lock_init(&adapter->stats_lock); 3273 3274 INIT_LIST_HEAD(&adapter->adapter_list); 3275 INIT_WORK(&adapter->ext_intr_handler_task, ext_intr_task); 3276 INIT_WORK(&adapter->fatal_error_handler_task, fatal_error_task); 3277 3278 INIT_WORK(&adapter->db_full_task, db_full_task); 3279 INIT_WORK(&adapter->db_empty_task, db_empty_task); 3280 INIT_WORK(&adapter->db_drop_task, db_drop_task); 3281 3282 INIT_DELAYED_WORK(&adapter->adap_check_task, t3_adap_check_task); 3283 3284 for (i = 0; i < ai->nports0 + ai->nports1; ++i) { 3285 struct net_device *netdev; 3286 3287 netdev = alloc_etherdev_mq(sizeof(struct port_info), SGE_QSETS); 3288 if (!netdev) { 3289 err = -ENOMEM; 3290 goto out_free_dev; 3291 } 3292 3293 SET_NETDEV_DEV(netdev, &pdev->dev); 3294 3295 adapter->port[i] = netdev; 3296 pi = netdev_priv(netdev); 3297 pi->adapter = adapter; 3298 pi->port_id = i; 3299 netif_carrier_off(netdev); 3300 netdev->irq = pdev->irq; 3301 netdev->mem_start = mmio_start; 3302 netdev->mem_end = mmio_start + mmio_len - 1; 3303 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | 3304 NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX; 3305 netdev->features |= netdev->hw_features | 3306 NETIF_F_HW_VLAN_CTAG_TX; 3307 netdev->vlan_features |= netdev->features & VLAN_FEAT; 3308 if (pci_using_dac) 3309 netdev->features |= NETIF_F_HIGHDMA; 3310 3311 netdev->netdev_ops = &cxgb_netdev_ops; 3312 netdev->ethtool_ops = &cxgb_ethtool_ops; 3313 netdev->min_mtu = 81; 3314 netdev->max_mtu = ETH_MAX_MTU; 3315 netdev->dev_port = pi->port_id; 3316 } 3317 3318 pci_set_drvdata(pdev, adapter); 3319 if (t3_prep_adapter(adapter, ai, 1) < 0) { 3320 err = -ENODEV; 3321 goto out_free_dev; 3322 } 3323 3324 /* 3325 * The card is now ready to go. If any errors occur during device 3326 * registration we do not fail the whole card but rather proceed only 3327 * with the ports we manage to register successfully. However we must 3328 * register at least one net device. 3329 */ 3330 for_each_port(adapter, i) { 3331 err = register_netdev(adapter->port[i]); 3332 if (err) 3333 dev_warn(&pdev->dev, 3334 "cannot register net device %s, skipping\n", 3335 adapter->port[i]->name); 3336 else { 3337 /* 3338 * Change the name we use for messages to the name of 3339 * the first successfully registered interface. 3340 */ 3341 if (!adapter->registered_device_map) 3342 adapter->name = adapter->port[i]->name; 3343 3344 __set_bit(i, &adapter->registered_device_map); 3345 } 3346 } 3347 if (!adapter->registered_device_map) { 3348 dev_err(&pdev->dev, "could not register any net devices\n"); 3349 goto out_free_dev; 3350 } 3351 3352 for_each_port(adapter, i) 3353 cxgb3_init_iscsi_mac(adapter->port[i]); 3354 3355 /* Driver's ready. Reflect it on LEDs */ 3356 t3_led_ready(adapter); 3357 3358 if (is_offload(adapter)) { 3359 __set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map); 3360 cxgb3_adapter_ofld(adapter); 3361 } 3362 3363 /* See what interrupts we'll be using */ 3364 if (msi > 1 && cxgb_enable_msix(adapter) == 0) 3365 adapter->flags |= USING_MSIX; 3366 else if (msi > 0 && pci_enable_msi(pdev) == 0) 3367 adapter->flags |= USING_MSI; 3368 3369 set_nqsets(adapter); 3370 3371 err = sysfs_create_group(&adapter->port[0]->dev.kobj, 3372 &cxgb3_attr_group); 3373 if (err) { 3374 dev_err(&pdev->dev, "cannot create sysfs group\n"); 3375 goto out_close_led; 3376 } 3377 3378 print_port_info(adapter, ai); 3379 return 0; 3380 3381 out_close_led: 3382 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 0); 3383 3384 out_free_dev: 3385 iounmap(adapter->regs); 3386 for (i = ai->nports0 + ai->nports1 - 1; i >= 0; --i) 3387 if (adapter->port[i]) 3388 free_netdev(adapter->port[i]); 3389 3390 out_free_adapter_nofail: 3391 kfree_skb(adapter->nofail_skb); 3392 3393 out_free_adapter: 3394 kfree(adapter); 3395 3396 out_release_regions: 3397 pci_release_regions(pdev); 3398 out_disable_device: 3399 pci_disable_device(pdev); 3400 out: 3401 return err; 3402 } 3403 3404 static void remove_one(struct pci_dev *pdev) 3405 { 3406 struct adapter *adapter = pci_get_drvdata(pdev); 3407 3408 if (adapter) { 3409 int i; 3410 3411 t3_sge_stop(adapter); 3412 sysfs_remove_group(&adapter->port[0]->dev.kobj, 3413 &cxgb3_attr_group); 3414 3415 if (is_offload(adapter)) { 3416 cxgb3_adapter_unofld(adapter); 3417 if (test_bit(OFFLOAD_DEVMAP_BIT, 3418 &adapter->open_device_map)) 3419 offload_close(&adapter->tdev); 3420 } 3421 3422 for_each_port(adapter, i) 3423 if (test_bit(i, &adapter->registered_device_map)) 3424 unregister_netdev(adapter->port[i]); 3425 3426 t3_stop_sge_timers(adapter); 3427 t3_free_sge_resources(adapter); 3428 cxgb_disable_msi(adapter); 3429 3430 for_each_port(adapter, i) 3431 if (adapter->port[i]) 3432 free_netdev(adapter->port[i]); 3433 3434 iounmap(adapter->regs); 3435 kfree_skb(adapter->nofail_skb); 3436 kfree(adapter); 3437 pci_release_regions(pdev); 3438 pci_disable_device(pdev); 3439 } 3440 } 3441 3442 static struct pci_driver driver = { 3443 .name = DRV_NAME, 3444 .id_table = cxgb3_pci_tbl, 3445 .probe = init_one, 3446 .remove = remove_one, 3447 .err_handler = &t3_err_handler, 3448 }; 3449 3450 static int __init cxgb3_init_module(void) 3451 { 3452 int ret; 3453 3454 cxgb3_offload_init(); 3455 3456 ret = pci_register_driver(&driver); 3457 return ret; 3458 } 3459 3460 static void __exit cxgb3_cleanup_module(void) 3461 { 3462 pci_unregister_driver(&driver); 3463 if (cxgb3_wq) 3464 destroy_workqueue(cxgb3_wq); 3465 } 3466 3467 module_init(cxgb3_init_module); 3468 module_exit(cxgb3_cleanup_module); 3469