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_VERSION(DRV_VERSION); 109 MODULE_DEVICE_TABLE(pci, cxgb3_pci_tbl); 110 111 static int dflt_msg_enable = DFLT_MSG_ENABLE; 112 113 module_param(dflt_msg_enable, int, 0644); 114 MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T3 default message enable bitmap"); 115 116 /* 117 * The driver uses the best interrupt scheme available on a platform in the 118 * order MSI-X, MSI, legacy pin interrupts. This parameter determines which 119 * of these schemes the driver may consider as follows: 120 * 121 * msi = 2: choose from among all three options 122 * msi = 1: only consider MSI and pin interrupts 123 * msi = 0: force pin interrupts 124 */ 125 static int msi = 2; 126 127 module_param(msi, int, 0644); 128 MODULE_PARM_DESC(msi, "whether to use MSI or MSI-X"); 129 130 /* 131 * The driver enables offload as a default. 132 * To disable it, use ofld_disable = 1. 133 */ 134 135 static int ofld_disable = 0; 136 137 module_param(ofld_disable, int, 0644); 138 MODULE_PARM_DESC(ofld_disable, "whether to enable offload at init time or not"); 139 140 /* 141 * We have work elements that we need to cancel when an interface is taken 142 * down. Normally the work elements would be executed by keventd but that 143 * can deadlock because of linkwatch. If our close method takes the rtnl 144 * lock and linkwatch is ahead of our work elements in keventd, linkwatch 145 * will block keventd as it needs the rtnl lock, and we'll deadlock waiting 146 * for our work to complete. Get our own work queue to solve this. 147 */ 148 struct workqueue_struct *cxgb3_wq; 149 150 /** 151 * link_report - show link status and link speed/duplex 152 * @p: the port whose settings are to be reported 153 * 154 * Shows the link status, speed, and duplex of a port. 155 */ 156 static void link_report(struct net_device *dev) 157 { 158 if (!netif_carrier_ok(dev)) 159 netdev_info(dev, "link down\n"); 160 else { 161 const char *s = "10Mbps"; 162 const struct port_info *p = netdev_priv(dev); 163 164 switch (p->link_config.speed) { 165 case SPEED_10000: 166 s = "10Gbps"; 167 break; 168 case SPEED_1000: 169 s = "1000Mbps"; 170 break; 171 case SPEED_100: 172 s = "100Mbps"; 173 break; 174 } 175 176 netdev_info(dev, "link up, %s, %s-duplex\n", 177 s, p->link_config.duplex == DUPLEX_FULL 178 ? "full" : "half"); 179 } 180 } 181 182 static void enable_tx_fifo_drain(struct adapter *adapter, 183 struct port_info *pi) 184 { 185 t3_set_reg_field(adapter, A_XGM_TXFIFO_CFG + pi->mac.offset, 0, 186 F_ENDROPPKT); 187 t3_write_reg(adapter, A_XGM_RX_CTRL + pi->mac.offset, 0); 188 t3_write_reg(adapter, A_XGM_TX_CTRL + pi->mac.offset, F_TXEN); 189 t3_write_reg(adapter, A_XGM_RX_CTRL + pi->mac.offset, F_RXEN); 190 } 191 192 static void disable_tx_fifo_drain(struct adapter *adapter, 193 struct port_info *pi) 194 { 195 t3_set_reg_field(adapter, A_XGM_TXFIFO_CFG + pi->mac.offset, 196 F_ENDROPPKT, 0); 197 } 198 199 void t3_os_link_fault(struct adapter *adap, int port_id, int state) 200 { 201 struct net_device *dev = adap->port[port_id]; 202 struct port_info *pi = netdev_priv(dev); 203 204 if (state == netif_carrier_ok(dev)) 205 return; 206 207 if (state) { 208 struct cmac *mac = &pi->mac; 209 210 netif_carrier_on(dev); 211 212 disable_tx_fifo_drain(adap, pi); 213 214 /* Clear local faults */ 215 t3_xgm_intr_disable(adap, pi->port_id); 216 t3_read_reg(adap, A_XGM_INT_STATUS + 217 pi->mac.offset); 218 t3_write_reg(adap, 219 A_XGM_INT_CAUSE + pi->mac.offset, 220 F_XGM_INT); 221 222 t3_set_reg_field(adap, 223 A_XGM_INT_ENABLE + 224 pi->mac.offset, 225 F_XGM_INT, F_XGM_INT); 226 t3_xgm_intr_enable(adap, pi->port_id); 227 228 t3_mac_enable(mac, MAC_DIRECTION_TX); 229 } else { 230 netif_carrier_off(dev); 231 232 /* Flush TX FIFO */ 233 enable_tx_fifo_drain(adap, pi); 234 } 235 link_report(dev); 236 } 237 238 /** 239 * t3_os_link_changed - handle link status changes 240 * @adapter: the adapter associated with the link change 241 * @port_id: the port index whose limk status has changed 242 * @link_stat: the new status of the link 243 * @speed: the new speed setting 244 * @duplex: the new duplex setting 245 * @pause: the new flow-control setting 246 * 247 * This is the OS-dependent handler for link status changes. The OS 248 * neutral handler takes care of most of the processing for these events, 249 * then calls this handler for any OS-specific processing. 250 */ 251 void t3_os_link_changed(struct adapter *adapter, int port_id, int link_stat, 252 int speed, int duplex, int pause) 253 { 254 struct net_device *dev = adapter->port[port_id]; 255 struct port_info *pi = netdev_priv(dev); 256 struct cmac *mac = &pi->mac; 257 258 /* Skip changes from disabled ports. */ 259 if (!netif_running(dev)) 260 return; 261 262 if (link_stat != netif_carrier_ok(dev)) { 263 if (link_stat) { 264 disable_tx_fifo_drain(adapter, pi); 265 266 t3_mac_enable(mac, MAC_DIRECTION_RX); 267 268 /* Clear local faults */ 269 t3_xgm_intr_disable(adapter, pi->port_id); 270 t3_read_reg(adapter, A_XGM_INT_STATUS + 271 pi->mac.offset); 272 t3_write_reg(adapter, 273 A_XGM_INT_CAUSE + pi->mac.offset, 274 F_XGM_INT); 275 276 t3_set_reg_field(adapter, 277 A_XGM_INT_ENABLE + pi->mac.offset, 278 F_XGM_INT, F_XGM_INT); 279 t3_xgm_intr_enable(adapter, pi->port_id); 280 281 netif_carrier_on(dev); 282 } else { 283 netif_carrier_off(dev); 284 285 t3_xgm_intr_disable(adapter, pi->port_id); 286 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 287 t3_set_reg_field(adapter, 288 A_XGM_INT_ENABLE + pi->mac.offset, 289 F_XGM_INT, 0); 290 291 if (is_10G(adapter)) 292 pi->phy.ops->power_down(&pi->phy, 1); 293 294 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 295 t3_mac_disable(mac, MAC_DIRECTION_RX); 296 t3_link_start(&pi->phy, mac, &pi->link_config); 297 298 /* Flush TX FIFO */ 299 enable_tx_fifo_drain(adapter, pi); 300 } 301 302 link_report(dev); 303 } 304 } 305 306 /** 307 * t3_os_phymod_changed - handle PHY module changes 308 * @phy: the PHY reporting the module change 309 * @mod_type: new module type 310 * 311 * This is the OS-dependent handler for PHY module changes. It is 312 * invoked when a PHY module is removed or inserted for any OS-specific 313 * processing. 314 */ 315 void t3_os_phymod_changed(struct adapter *adap, int port_id) 316 { 317 static const char *mod_str[] = { 318 NULL, "SR", "LR", "LRM", "TWINAX", "TWINAX", "unknown" 319 }; 320 321 const struct net_device *dev = adap->port[port_id]; 322 const struct port_info *pi = netdev_priv(dev); 323 324 if (pi->phy.modtype == phy_modtype_none) 325 netdev_info(dev, "PHY module unplugged\n"); 326 else 327 netdev_info(dev, "%s PHY module inserted\n", 328 mod_str[pi->phy.modtype]); 329 } 330 331 static void cxgb_set_rxmode(struct net_device *dev) 332 { 333 struct port_info *pi = netdev_priv(dev); 334 335 t3_mac_set_rx_mode(&pi->mac, dev); 336 } 337 338 /** 339 * link_start - enable a port 340 * @dev: the device to enable 341 * 342 * Performs the MAC and PHY actions needed to enable a port. 343 */ 344 static void link_start(struct net_device *dev) 345 { 346 struct port_info *pi = netdev_priv(dev); 347 struct cmac *mac = &pi->mac; 348 349 t3_mac_reset(mac); 350 t3_mac_set_num_ucast(mac, MAX_MAC_IDX); 351 t3_mac_set_mtu(mac, dev->mtu); 352 t3_mac_set_address(mac, LAN_MAC_IDX, dev->dev_addr); 353 t3_mac_set_address(mac, SAN_MAC_IDX, pi->iscsic.mac_addr); 354 t3_mac_set_rx_mode(mac, dev); 355 t3_link_start(&pi->phy, mac, &pi->link_config); 356 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); 357 } 358 359 static inline void cxgb_disable_msi(struct adapter *adapter) 360 { 361 if (adapter->flags & USING_MSIX) { 362 pci_disable_msix(adapter->pdev); 363 adapter->flags &= ~USING_MSIX; 364 } else if (adapter->flags & USING_MSI) { 365 pci_disable_msi(adapter->pdev); 366 adapter->flags &= ~USING_MSI; 367 } 368 } 369 370 /* 371 * Interrupt handler for asynchronous events used with MSI-X. 372 */ 373 static irqreturn_t t3_async_intr_handler(int irq, void *cookie) 374 { 375 t3_slow_intr_handler(cookie); 376 return IRQ_HANDLED; 377 } 378 379 /* 380 * Name the MSI-X interrupts. 381 */ 382 static void name_msix_vecs(struct adapter *adap) 383 { 384 int i, j, msi_idx = 1, n = sizeof(adap->msix_info[0].desc) - 1; 385 386 snprintf(adap->msix_info[0].desc, n, "%s", adap->name); 387 adap->msix_info[0].desc[n] = 0; 388 389 for_each_port(adap, j) { 390 struct net_device *d = adap->port[j]; 391 const struct port_info *pi = netdev_priv(d); 392 393 for (i = 0; i < pi->nqsets; i++, msi_idx++) { 394 snprintf(adap->msix_info[msi_idx].desc, n, 395 "%s-%d", d->name, pi->first_qset + i); 396 adap->msix_info[msi_idx].desc[n] = 0; 397 } 398 } 399 } 400 401 static int request_msix_data_irqs(struct adapter *adap) 402 { 403 int i, j, err, qidx = 0; 404 405 for_each_port(adap, i) { 406 int nqsets = adap2pinfo(adap, i)->nqsets; 407 408 for (j = 0; j < nqsets; ++j) { 409 err = request_irq(adap->msix_info[qidx + 1].vec, 410 t3_intr_handler(adap, 411 adap->sge.qs[qidx]. 412 rspq.polling), 0, 413 adap->msix_info[qidx + 1].desc, 414 &adap->sge.qs[qidx]); 415 if (err) { 416 while (--qidx >= 0) 417 free_irq(adap->msix_info[qidx + 1].vec, 418 &adap->sge.qs[qidx]); 419 return err; 420 } 421 qidx++; 422 } 423 } 424 return 0; 425 } 426 427 static void free_irq_resources(struct adapter *adapter) 428 { 429 if (adapter->flags & USING_MSIX) { 430 int i, n = 0; 431 432 free_irq(adapter->msix_info[0].vec, adapter); 433 for_each_port(adapter, i) 434 n += adap2pinfo(adapter, i)->nqsets; 435 436 for (i = 0; i < n; ++i) 437 free_irq(adapter->msix_info[i + 1].vec, 438 &adapter->sge.qs[i]); 439 } else 440 free_irq(adapter->pdev->irq, adapter); 441 } 442 443 static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt, 444 unsigned long n) 445 { 446 int attempts = 10; 447 448 while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) { 449 if (!--attempts) 450 return -ETIMEDOUT; 451 msleep(10); 452 } 453 return 0; 454 } 455 456 static int init_tp_parity(struct adapter *adap) 457 { 458 int i; 459 struct sk_buff *skb; 460 struct cpl_set_tcb_field *greq; 461 unsigned long cnt = adap->sge.qs[0].rspq.offload_pkts; 462 463 t3_tp_set_offload_mode(adap, 1); 464 465 for (i = 0; i < 16; i++) { 466 struct cpl_smt_write_req *req; 467 468 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 469 if (!skb) 470 skb = adap->nofail_skb; 471 if (!skb) 472 goto alloc_skb_fail; 473 474 req = __skb_put_zero(skb, sizeof(*req)); 475 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 476 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, i)); 477 req->mtu_idx = NMTUS - 1; 478 req->iff = i; 479 t3_mgmt_tx(adap, skb); 480 if (skb == adap->nofail_skb) { 481 await_mgmt_replies(adap, cnt, i + 1); 482 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 483 if (!adap->nofail_skb) 484 goto alloc_skb_fail; 485 } 486 } 487 488 for (i = 0; i < 2048; i++) { 489 struct cpl_l2t_write_req *req; 490 491 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 492 if (!skb) 493 skb = adap->nofail_skb; 494 if (!skb) 495 goto alloc_skb_fail; 496 497 req = __skb_put_zero(skb, sizeof(*req)); 498 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 499 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_L2T_WRITE_REQ, i)); 500 req->params = htonl(V_L2T_W_IDX(i)); 501 t3_mgmt_tx(adap, skb); 502 if (skb == adap->nofail_skb) { 503 await_mgmt_replies(adap, cnt, 16 + i + 1); 504 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 505 if (!adap->nofail_skb) 506 goto alloc_skb_fail; 507 } 508 } 509 510 for (i = 0; i < 2048; i++) { 511 struct cpl_rte_write_req *req; 512 513 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 514 if (!skb) 515 skb = adap->nofail_skb; 516 if (!skb) 517 goto alloc_skb_fail; 518 519 req = __skb_put_zero(skb, sizeof(*req)); 520 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 521 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RTE_WRITE_REQ, i)); 522 req->l2t_idx = htonl(V_L2T_W_IDX(i)); 523 t3_mgmt_tx(adap, skb); 524 if (skb == adap->nofail_skb) { 525 await_mgmt_replies(adap, cnt, 16 + 2048 + i + 1); 526 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 527 if (!adap->nofail_skb) 528 goto alloc_skb_fail; 529 } 530 } 531 532 skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 533 if (!skb) 534 skb = adap->nofail_skb; 535 if (!skb) 536 goto alloc_skb_fail; 537 538 greq = __skb_put_zero(skb, sizeof(*greq)); 539 greq->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 540 OPCODE_TID(greq) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, 0)); 541 greq->mask = cpu_to_be64(1); 542 t3_mgmt_tx(adap, skb); 543 544 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1); 545 if (skb == adap->nofail_skb) { 546 i = await_mgmt_replies(adap, cnt, 16 + 2048 + 2048 + 1); 547 adap->nofail_skb = alloc_skb(sizeof(*greq), GFP_KERNEL); 548 } 549 550 t3_tp_set_offload_mode(adap, 0); 551 return i; 552 553 alloc_skb_fail: 554 t3_tp_set_offload_mode(adap, 0); 555 return -ENOMEM; 556 } 557 558 /** 559 * setup_rss - configure RSS 560 * @adap: the adapter 561 * 562 * Sets up RSS to distribute packets to multiple receive queues. We 563 * configure the RSS CPU lookup table to distribute to the number of HW 564 * receive queues, and the response queue lookup table to narrow that 565 * down to the response queues actually configured for each port. 566 * We always configure the RSS mapping for two ports since the mapping 567 * table has plenty of entries. 568 */ 569 static void setup_rss(struct adapter *adap) 570 { 571 int i; 572 unsigned int nq0 = adap2pinfo(adap, 0)->nqsets; 573 unsigned int nq1 = adap->port[1] ? adap2pinfo(adap, 1)->nqsets : 1; 574 u8 cpus[SGE_QSETS + 1]; 575 u16 rspq_map[RSS_TABLE_SIZE + 1]; 576 577 for (i = 0; i < SGE_QSETS; ++i) 578 cpus[i] = i; 579 cpus[SGE_QSETS] = 0xff; /* terminator */ 580 581 for (i = 0; i < RSS_TABLE_SIZE / 2; ++i) { 582 rspq_map[i] = i % nq0; 583 rspq_map[i + RSS_TABLE_SIZE / 2] = (i % nq1) + nq0; 584 } 585 rspq_map[RSS_TABLE_SIZE] = 0xffff; /* terminator */ 586 587 t3_config_rss(adap, F_RQFEEDBACKENABLE | F_TNLLKPEN | F_TNLMAPEN | 588 F_TNLPRTEN | F_TNL2TUPEN | F_TNL4TUPEN | 589 V_RRCPLCPUSIZE(6) | F_HASHTOEPLITZ, cpus, rspq_map); 590 } 591 592 static void ring_dbs(struct adapter *adap) 593 { 594 int i, j; 595 596 for (i = 0; i < SGE_QSETS; i++) { 597 struct sge_qset *qs = &adap->sge.qs[i]; 598 599 if (qs->adap) 600 for (j = 0; j < SGE_TXQ_PER_SET; j++) 601 t3_write_reg(adap, A_SG_KDOORBELL, F_SELEGRCNTX | V_EGRCNTX(qs->txq[j].cntxt_id)); 602 } 603 } 604 605 static void init_napi(struct adapter *adap) 606 { 607 int i; 608 609 for (i = 0; i < SGE_QSETS; i++) { 610 struct sge_qset *qs = &adap->sge.qs[i]; 611 612 if (qs->adap) 613 netif_napi_add(qs->netdev, &qs->napi, qs->napi.poll, 614 64); 615 } 616 617 /* 618 * netif_napi_add() can be called only once per napi_struct because it 619 * adds each new napi_struct to a list. Be careful not to call it a 620 * second time, e.g., during EEH recovery, by making a note of it. 621 */ 622 adap->flags |= NAPI_INIT; 623 } 624 625 /* 626 * Wait until all NAPI handlers are descheduled. This includes the handlers of 627 * both netdevices representing interfaces and the dummy ones for the extra 628 * queues. 629 */ 630 static void quiesce_rx(struct adapter *adap) 631 { 632 int i; 633 634 for (i = 0; i < SGE_QSETS; i++) 635 if (adap->sge.qs[i].adap) 636 napi_disable(&adap->sge.qs[i].napi); 637 } 638 639 static void enable_all_napi(struct adapter *adap) 640 { 641 int i; 642 for (i = 0; i < SGE_QSETS; i++) 643 if (adap->sge.qs[i].adap) 644 napi_enable(&adap->sge.qs[i].napi); 645 } 646 647 /** 648 * setup_sge_qsets - configure SGE Tx/Rx/response queues 649 * @adap: the adapter 650 * 651 * Determines how many sets of SGE queues to use and initializes them. 652 * We support multiple queue sets per port if we have MSI-X, otherwise 653 * just one queue set per port. 654 */ 655 static int setup_sge_qsets(struct adapter *adap) 656 { 657 int i, j, err, irq_idx = 0, qset_idx = 0; 658 unsigned int ntxq = SGE_TXQ_PER_SET; 659 660 if (adap->params.rev > 0 && !(adap->flags & USING_MSI)) 661 irq_idx = -1; 662 663 for_each_port(adap, i) { 664 struct net_device *dev = adap->port[i]; 665 struct port_info *pi = netdev_priv(dev); 666 667 pi->qs = &adap->sge.qs[pi->first_qset]; 668 for (j = 0; j < pi->nqsets; ++j, ++qset_idx) { 669 err = t3_sge_alloc_qset(adap, qset_idx, 1, 670 (adap->flags & USING_MSIX) ? qset_idx + 1 : 671 irq_idx, 672 &adap->params.sge.qset[qset_idx], ntxq, dev, 673 netdev_get_tx_queue(dev, j)); 674 if (err) { 675 t3_free_sge_resources(adap); 676 return err; 677 } 678 } 679 } 680 681 return 0; 682 } 683 684 static ssize_t attr_show(struct device *d, char *buf, 685 ssize_t(*format) (struct net_device *, char *)) 686 { 687 ssize_t len; 688 689 /* Synchronize with ioctls that may shut down the device */ 690 rtnl_lock(); 691 len = (*format) (to_net_dev(d), buf); 692 rtnl_unlock(); 693 return len; 694 } 695 696 static ssize_t attr_store(struct device *d, 697 const char *buf, size_t len, 698 ssize_t(*set) (struct net_device *, unsigned int), 699 unsigned int min_val, unsigned int max_val) 700 { 701 ssize_t ret; 702 unsigned int val; 703 704 if (!capable(CAP_NET_ADMIN)) 705 return -EPERM; 706 707 ret = kstrtouint(buf, 0, &val); 708 if (ret) 709 return ret; 710 if (val < min_val || val > max_val) 711 return -EINVAL; 712 713 rtnl_lock(); 714 ret = (*set) (to_net_dev(d), val); 715 if (!ret) 716 ret = len; 717 rtnl_unlock(); 718 return ret; 719 } 720 721 #define CXGB3_SHOW(name, val_expr) \ 722 static ssize_t format_##name(struct net_device *dev, char *buf) \ 723 { \ 724 struct port_info *pi = netdev_priv(dev); \ 725 struct adapter *adap = pi->adapter; \ 726 return sprintf(buf, "%u\n", val_expr); \ 727 } \ 728 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \ 729 char *buf) \ 730 { \ 731 return attr_show(d, buf, format_##name); \ 732 } 733 734 static ssize_t set_nfilters(struct net_device *dev, unsigned int val) 735 { 736 struct port_info *pi = netdev_priv(dev); 737 struct adapter *adap = pi->adapter; 738 int min_tids = is_offload(adap) ? MC5_MIN_TIDS : 0; 739 740 if (adap->flags & FULL_INIT_DONE) 741 return -EBUSY; 742 if (val && adap->params.rev == 0) 743 return -EINVAL; 744 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nservers - 745 min_tids) 746 return -EINVAL; 747 adap->params.mc5.nfilters = val; 748 return 0; 749 } 750 751 static ssize_t store_nfilters(struct device *d, struct device_attribute *attr, 752 const char *buf, size_t len) 753 { 754 return attr_store(d, buf, len, set_nfilters, 0, ~0); 755 } 756 757 static ssize_t set_nservers(struct net_device *dev, unsigned int val) 758 { 759 struct port_info *pi = netdev_priv(dev); 760 struct adapter *adap = pi->adapter; 761 762 if (adap->flags & FULL_INIT_DONE) 763 return -EBUSY; 764 if (val > t3_mc5_size(&adap->mc5) - adap->params.mc5.nfilters - 765 MC5_MIN_TIDS) 766 return -EINVAL; 767 adap->params.mc5.nservers = val; 768 return 0; 769 } 770 771 static ssize_t store_nservers(struct device *d, struct device_attribute *attr, 772 const char *buf, size_t len) 773 { 774 return attr_store(d, buf, len, set_nservers, 0, ~0); 775 } 776 777 #define CXGB3_ATTR_R(name, val_expr) \ 778 CXGB3_SHOW(name, val_expr) \ 779 static DEVICE_ATTR(name, 0444, show_##name, NULL) 780 781 #define CXGB3_ATTR_RW(name, val_expr, store_method) \ 782 CXGB3_SHOW(name, val_expr) \ 783 static DEVICE_ATTR(name, 0644, show_##name, store_method) 784 785 CXGB3_ATTR_R(cam_size, t3_mc5_size(&adap->mc5)); 786 CXGB3_ATTR_RW(nfilters, adap->params.mc5.nfilters, store_nfilters); 787 CXGB3_ATTR_RW(nservers, adap->params.mc5.nservers, store_nservers); 788 789 static struct attribute *cxgb3_attrs[] = { 790 &dev_attr_cam_size.attr, 791 &dev_attr_nfilters.attr, 792 &dev_attr_nservers.attr, 793 NULL 794 }; 795 796 static const struct attribute_group cxgb3_attr_group = { 797 .attrs = cxgb3_attrs, 798 }; 799 800 static ssize_t tm_attr_show(struct device *d, 801 char *buf, int sched) 802 { 803 struct port_info *pi = netdev_priv(to_net_dev(d)); 804 struct adapter *adap = pi->adapter; 805 unsigned int v, addr, bpt, cpt; 806 ssize_t len; 807 808 addr = A_TP_TX_MOD_Q1_Q0_RATE_LIMIT - sched / 2; 809 rtnl_lock(); 810 t3_write_reg(adap, A_TP_TM_PIO_ADDR, addr); 811 v = t3_read_reg(adap, A_TP_TM_PIO_DATA); 812 if (sched & 1) 813 v >>= 16; 814 bpt = (v >> 8) & 0xff; 815 cpt = v & 0xff; 816 if (!cpt) 817 len = sprintf(buf, "disabled\n"); 818 else { 819 v = (adap->params.vpd.cclk * 1000) / cpt; 820 len = sprintf(buf, "%u Kbps\n", (v * bpt) / 125); 821 } 822 rtnl_unlock(); 823 return len; 824 } 825 826 static ssize_t tm_attr_store(struct device *d, 827 const char *buf, size_t len, int sched) 828 { 829 struct port_info *pi = netdev_priv(to_net_dev(d)); 830 struct adapter *adap = pi->adapter; 831 unsigned int val; 832 ssize_t ret; 833 834 if (!capable(CAP_NET_ADMIN)) 835 return -EPERM; 836 837 ret = kstrtouint(buf, 0, &val); 838 if (ret) 839 return ret; 840 if (val > 10000000) 841 return -EINVAL; 842 843 rtnl_lock(); 844 ret = t3_config_sched(adap, val, sched); 845 if (!ret) 846 ret = len; 847 rtnl_unlock(); 848 return ret; 849 } 850 851 #define TM_ATTR(name, sched) \ 852 static ssize_t show_##name(struct device *d, struct device_attribute *attr, \ 853 char *buf) \ 854 { \ 855 return tm_attr_show(d, buf, sched); \ 856 } \ 857 static ssize_t store_##name(struct device *d, struct device_attribute *attr, \ 858 const char *buf, size_t len) \ 859 { \ 860 return tm_attr_store(d, buf, len, sched); \ 861 } \ 862 static DEVICE_ATTR(name, 0644, show_##name, store_##name) 863 864 TM_ATTR(sched0, 0); 865 TM_ATTR(sched1, 1); 866 TM_ATTR(sched2, 2); 867 TM_ATTR(sched3, 3); 868 TM_ATTR(sched4, 4); 869 TM_ATTR(sched5, 5); 870 TM_ATTR(sched6, 6); 871 TM_ATTR(sched7, 7); 872 873 static struct attribute *offload_attrs[] = { 874 &dev_attr_sched0.attr, 875 &dev_attr_sched1.attr, 876 &dev_attr_sched2.attr, 877 &dev_attr_sched3.attr, 878 &dev_attr_sched4.attr, 879 &dev_attr_sched5.attr, 880 &dev_attr_sched6.attr, 881 &dev_attr_sched7.attr, 882 NULL 883 }; 884 885 static const struct attribute_group offload_attr_group = { 886 .attrs = offload_attrs, 887 }; 888 889 /* 890 * Sends an sk_buff to an offload queue driver 891 * after dealing with any active network taps. 892 */ 893 static inline int offload_tx(struct t3cdev *tdev, struct sk_buff *skb) 894 { 895 int ret; 896 897 local_bh_disable(); 898 ret = t3_offload_tx(tdev, skb); 899 local_bh_enable(); 900 return ret; 901 } 902 903 static int write_smt_entry(struct adapter *adapter, int idx) 904 { 905 struct cpl_smt_write_req *req; 906 struct port_info *pi = netdev_priv(adapter->port[idx]); 907 struct sk_buff *skb = alloc_skb(sizeof(*req), GFP_KERNEL); 908 909 if (!skb) 910 return -ENOMEM; 911 912 req = __skb_put(skb, sizeof(*req)); 913 req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); 914 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SMT_WRITE_REQ, idx)); 915 req->mtu_idx = NMTUS - 1; /* should be 0 but there's a T3 bug */ 916 req->iff = idx; 917 memcpy(req->src_mac0, adapter->port[idx]->dev_addr, ETH_ALEN); 918 memcpy(req->src_mac1, pi->iscsic.mac_addr, ETH_ALEN); 919 skb->priority = 1; 920 offload_tx(&adapter->tdev, skb); 921 return 0; 922 } 923 924 static int init_smt(struct adapter *adapter) 925 { 926 int i; 927 928 for_each_port(adapter, i) 929 write_smt_entry(adapter, i); 930 return 0; 931 } 932 933 static void init_port_mtus(struct adapter *adapter) 934 { 935 unsigned int mtus = adapter->port[0]->mtu; 936 937 if (adapter->port[1]) 938 mtus |= adapter->port[1]->mtu << 16; 939 t3_write_reg(adapter, A_TP_MTU_PORT_TABLE, mtus); 940 } 941 942 static int send_pktsched_cmd(struct adapter *adap, int sched, int qidx, int lo, 943 int hi, int port) 944 { 945 struct sk_buff *skb; 946 struct mngt_pktsched_wr *req; 947 int ret; 948 949 skb = alloc_skb(sizeof(*req), GFP_KERNEL); 950 if (!skb) 951 skb = adap->nofail_skb; 952 if (!skb) 953 return -ENOMEM; 954 955 req = skb_put(skb, sizeof(*req)); 956 req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_MNGT)); 957 req->mngt_opcode = FW_MNGTOPCODE_PKTSCHED_SET; 958 req->sched = sched; 959 req->idx = qidx; 960 req->min = lo; 961 req->max = hi; 962 req->binding = port; 963 ret = t3_mgmt_tx(adap, skb); 964 if (skb == adap->nofail_skb) { 965 adap->nofail_skb = alloc_skb(sizeof(struct cpl_set_tcb_field), 966 GFP_KERNEL); 967 if (!adap->nofail_skb) 968 ret = -ENOMEM; 969 } 970 971 return ret; 972 } 973 974 static int bind_qsets(struct adapter *adap) 975 { 976 int i, j, err = 0; 977 978 for_each_port(adap, i) { 979 const struct port_info *pi = adap2pinfo(adap, i); 980 981 for (j = 0; j < pi->nqsets; ++j) { 982 int ret = send_pktsched_cmd(adap, 1, 983 pi->first_qset + j, -1, 984 -1, i); 985 if (ret) 986 err = ret; 987 } 988 } 989 990 return err; 991 } 992 993 #define FW_VERSION __stringify(FW_VERSION_MAJOR) "." \ 994 __stringify(FW_VERSION_MINOR) "." __stringify(FW_VERSION_MICRO) 995 #define FW_FNAME "cxgb3/t3fw-" FW_VERSION ".bin" 996 #define TPSRAM_VERSION __stringify(TP_VERSION_MAJOR) "." \ 997 __stringify(TP_VERSION_MINOR) "." __stringify(TP_VERSION_MICRO) 998 #define TPSRAM_NAME "cxgb3/t3%c_psram-" TPSRAM_VERSION ".bin" 999 #define AEL2005_OPT_EDC_NAME "cxgb3/ael2005_opt_edc.bin" 1000 #define AEL2005_TWX_EDC_NAME "cxgb3/ael2005_twx_edc.bin" 1001 #define AEL2020_TWX_EDC_NAME "cxgb3/ael2020_twx_edc.bin" 1002 MODULE_FIRMWARE(FW_FNAME); 1003 MODULE_FIRMWARE("cxgb3/t3b_psram-" TPSRAM_VERSION ".bin"); 1004 MODULE_FIRMWARE("cxgb3/t3c_psram-" TPSRAM_VERSION ".bin"); 1005 MODULE_FIRMWARE(AEL2005_OPT_EDC_NAME); 1006 MODULE_FIRMWARE(AEL2005_TWX_EDC_NAME); 1007 MODULE_FIRMWARE(AEL2020_TWX_EDC_NAME); 1008 1009 static inline const char *get_edc_fw_name(int edc_idx) 1010 { 1011 const char *fw_name = NULL; 1012 1013 switch (edc_idx) { 1014 case EDC_OPT_AEL2005: 1015 fw_name = AEL2005_OPT_EDC_NAME; 1016 break; 1017 case EDC_TWX_AEL2005: 1018 fw_name = AEL2005_TWX_EDC_NAME; 1019 break; 1020 case EDC_TWX_AEL2020: 1021 fw_name = AEL2020_TWX_EDC_NAME; 1022 break; 1023 } 1024 return fw_name; 1025 } 1026 1027 int t3_get_edc_fw(struct cphy *phy, int edc_idx, int size) 1028 { 1029 struct adapter *adapter = phy->adapter; 1030 const struct firmware *fw; 1031 const char *fw_name; 1032 u32 csum; 1033 const __be32 *p; 1034 u16 *cache = phy->phy_cache; 1035 int i, ret = -EINVAL; 1036 1037 fw_name = get_edc_fw_name(edc_idx); 1038 if (fw_name) 1039 ret = request_firmware(&fw, fw_name, &adapter->pdev->dev); 1040 if (ret < 0) { 1041 dev_err(&adapter->pdev->dev, 1042 "could not upgrade firmware: unable to load %s\n", 1043 fw_name); 1044 return ret; 1045 } 1046 1047 /* check size, take checksum in account */ 1048 if (fw->size > size + 4) { 1049 CH_ERR(adapter, "firmware image too large %u, expected %d\n", 1050 (unsigned int)fw->size, size + 4); 1051 ret = -EINVAL; 1052 } 1053 1054 /* compute checksum */ 1055 p = (const __be32 *)fw->data; 1056 for (csum = 0, i = 0; i < fw->size / sizeof(csum); i++) 1057 csum += ntohl(p[i]); 1058 1059 if (csum != 0xffffffff) { 1060 CH_ERR(adapter, "corrupted firmware image, checksum %u\n", 1061 csum); 1062 ret = -EINVAL; 1063 } 1064 1065 for (i = 0; i < size / 4 ; i++) { 1066 *cache++ = (be32_to_cpu(p[i]) & 0xffff0000) >> 16; 1067 *cache++ = be32_to_cpu(p[i]) & 0xffff; 1068 } 1069 1070 release_firmware(fw); 1071 1072 return ret; 1073 } 1074 1075 static int upgrade_fw(struct adapter *adap) 1076 { 1077 int ret; 1078 const struct firmware *fw; 1079 struct device *dev = &adap->pdev->dev; 1080 1081 ret = request_firmware(&fw, FW_FNAME, dev); 1082 if (ret < 0) { 1083 dev_err(dev, "could not upgrade firmware: unable to load %s\n", 1084 FW_FNAME); 1085 return ret; 1086 } 1087 ret = t3_load_fw(adap, fw->data, fw->size); 1088 release_firmware(fw); 1089 1090 if (ret == 0) 1091 dev_info(dev, "successful upgrade to firmware %d.%d.%d\n", 1092 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO); 1093 else 1094 dev_err(dev, "failed to upgrade to firmware %d.%d.%d\n", 1095 FW_VERSION_MAJOR, FW_VERSION_MINOR, FW_VERSION_MICRO); 1096 1097 return ret; 1098 } 1099 1100 static inline char t3rev2char(struct adapter *adapter) 1101 { 1102 char rev = 0; 1103 1104 switch(adapter->params.rev) { 1105 case T3_REV_B: 1106 case T3_REV_B2: 1107 rev = 'b'; 1108 break; 1109 case T3_REV_C: 1110 rev = 'c'; 1111 break; 1112 } 1113 return rev; 1114 } 1115 1116 static int update_tpsram(struct adapter *adap) 1117 { 1118 const struct firmware *tpsram; 1119 char buf[64]; 1120 struct device *dev = &adap->pdev->dev; 1121 int ret; 1122 char rev; 1123 1124 rev = t3rev2char(adap); 1125 if (!rev) 1126 return 0; 1127 1128 snprintf(buf, sizeof(buf), TPSRAM_NAME, rev); 1129 1130 ret = request_firmware(&tpsram, buf, dev); 1131 if (ret < 0) { 1132 dev_err(dev, "could not load TP SRAM: unable to load %s\n", 1133 buf); 1134 return ret; 1135 } 1136 1137 ret = t3_check_tpsram(adap, tpsram->data, tpsram->size); 1138 if (ret) 1139 goto release_tpsram; 1140 1141 ret = t3_set_proto_sram(adap, tpsram->data); 1142 if (ret == 0) 1143 dev_info(dev, 1144 "successful update of protocol engine " 1145 "to %d.%d.%d\n", 1146 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO); 1147 else 1148 dev_err(dev, "failed to update of protocol engine %d.%d.%d\n", 1149 TP_VERSION_MAJOR, TP_VERSION_MINOR, TP_VERSION_MICRO); 1150 if (ret) 1151 dev_err(dev, "loading protocol SRAM failed\n"); 1152 1153 release_tpsram: 1154 release_firmware(tpsram); 1155 1156 return ret; 1157 } 1158 1159 /** 1160 * t3_synchronize_rx - wait for current Rx processing on a port to complete 1161 * @adap: the adapter 1162 * @p: the port 1163 * 1164 * Ensures that current Rx processing on any of the queues associated with 1165 * the given port completes before returning. We do this by acquiring and 1166 * releasing the locks of the response queues associated with the port. 1167 */ 1168 static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p) 1169 { 1170 int i; 1171 1172 for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { 1173 struct sge_rspq *q = &adap->sge.qs[i].rspq; 1174 1175 spin_lock_irq(&q->lock); 1176 spin_unlock_irq(&q->lock); 1177 } 1178 } 1179 1180 static void cxgb_vlan_mode(struct net_device *dev, netdev_features_t features) 1181 { 1182 struct port_info *pi = netdev_priv(dev); 1183 struct adapter *adapter = pi->adapter; 1184 1185 if (adapter->params.rev > 0) { 1186 t3_set_vlan_accel(adapter, 1 << pi->port_id, 1187 features & NETIF_F_HW_VLAN_CTAG_RX); 1188 } else { 1189 /* single control for all ports */ 1190 unsigned int i, have_vlans = features & NETIF_F_HW_VLAN_CTAG_RX; 1191 1192 for_each_port(adapter, i) 1193 have_vlans |= 1194 adapter->port[i]->features & 1195 NETIF_F_HW_VLAN_CTAG_RX; 1196 1197 t3_set_vlan_accel(adapter, 1, have_vlans); 1198 } 1199 t3_synchronize_rx(adapter, pi); 1200 } 1201 1202 /** 1203 * cxgb_up - enable the adapter 1204 * @adapter: adapter being enabled 1205 * 1206 * Called when the first port is enabled, this function performs the 1207 * actions necessary to make an adapter operational, such as completing 1208 * the initialization of HW modules, and enabling interrupts. 1209 * 1210 * Must be called with the rtnl lock held. 1211 */ 1212 static int cxgb_up(struct adapter *adap) 1213 { 1214 int i, err; 1215 1216 if (!(adap->flags & FULL_INIT_DONE)) { 1217 err = t3_check_fw_version(adap); 1218 if (err == -EINVAL) { 1219 err = upgrade_fw(adap); 1220 CH_WARN(adap, "FW upgrade to %d.%d.%d %s\n", 1221 FW_VERSION_MAJOR, FW_VERSION_MINOR, 1222 FW_VERSION_MICRO, err ? "failed" : "succeeded"); 1223 } 1224 1225 err = t3_check_tpsram_version(adap); 1226 if (err == -EINVAL) { 1227 err = update_tpsram(adap); 1228 CH_WARN(adap, "TP upgrade to %d.%d.%d %s\n", 1229 TP_VERSION_MAJOR, TP_VERSION_MINOR, 1230 TP_VERSION_MICRO, err ? "failed" : "succeeded"); 1231 } 1232 1233 /* 1234 * Clear interrupts now to catch errors if t3_init_hw fails. 1235 * We clear them again later as initialization may trigger 1236 * conditions that can interrupt. 1237 */ 1238 t3_intr_clear(adap); 1239 1240 err = t3_init_hw(adap, 0); 1241 if (err) 1242 goto out; 1243 1244 t3_set_reg_field(adap, A_TP_PARA_REG5, 0, F_RXDDPOFFINIT); 1245 t3_write_reg(adap, A_ULPRX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12)); 1246 1247 err = setup_sge_qsets(adap); 1248 if (err) 1249 goto out; 1250 1251 for_each_port(adap, i) 1252 cxgb_vlan_mode(adap->port[i], adap->port[i]->features); 1253 1254 setup_rss(adap); 1255 if (!(adap->flags & NAPI_INIT)) 1256 init_napi(adap); 1257 1258 t3_start_sge_timers(adap); 1259 adap->flags |= FULL_INIT_DONE; 1260 } 1261 1262 t3_intr_clear(adap); 1263 1264 if (adap->flags & USING_MSIX) { 1265 name_msix_vecs(adap); 1266 err = request_irq(adap->msix_info[0].vec, 1267 t3_async_intr_handler, 0, 1268 adap->msix_info[0].desc, adap); 1269 if (err) 1270 goto irq_err; 1271 1272 err = request_msix_data_irqs(adap); 1273 if (err) { 1274 free_irq(adap->msix_info[0].vec, adap); 1275 goto irq_err; 1276 } 1277 } else if ((err = request_irq(adap->pdev->irq, 1278 t3_intr_handler(adap, 1279 adap->sge.qs[0].rspq. 1280 polling), 1281 (adap->flags & USING_MSI) ? 1282 0 : IRQF_SHARED, 1283 adap->name, adap))) 1284 goto irq_err; 1285 1286 enable_all_napi(adap); 1287 t3_sge_start(adap); 1288 t3_intr_enable(adap); 1289 1290 if (adap->params.rev >= T3_REV_C && !(adap->flags & TP_PARITY_INIT) && 1291 is_offload(adap) && init_tp_parity(adap) == 0) 1292 adap->flags |= TP_PARITY_INIT; 1293 1294 if (adap->flags & TP_PARITY_INIT) { 1295 t3_write_reg(adap, A_TP_INT_CAUSE, 1296 F_CMCACHEPERR | F_ARPLUTPERR); 1297 t3_write_reg(adap, A_TP_INT_ENABLE, 0x7fbfffff); 1298 } 1299 1300 if (!(adap->flags & QUEUES_BOUND)) { 1301 int ret = bind_qsets(adap); 1302 1303 if (ret < 0) { 1304 CH_ERR(adap, "failed to bind qsets, err %d\n", ret); 1305 t3_intr_disable(adap); 1306 free_irq_resources(adap); 1307 err = ret; 1308 goto out; 1309 } 1310 adap->flags |= QUEUES_BOUND; 1311 } 1312 1313 out: 1314 return err; 1315 irq_err: 1316 CH_ERR(adap, "request_irq failed, err %d\n", err); 1317 goto out; 1318 } 1319 1320 /* 1321 * Release resources when all the ports and offloading have been stopped. 1322 */ 1323 static void cxgb_down(struct adapter *adapter, int on_wq) 1324 { 1325 t3_sge_stop(adapter); 1326 spin_lock_irq(&adapter->work_lock); /* sync with PHY intr task */ 1327 t3_intr_disable(adapter); 1328 spin_unlock_irq(&adapter->work_lock); 1329 1330 free_irq_resources(adapter); 1331 quiesce_rx(adapter); 1332 t3_sge_stop(adapter); 1333 if (!on_wq) 1334 flush_workqueue(cxgb3_wq);/* wait for external IRQ handler */ 1335 } 1336 1337 static void schedule_chk_task(struct adapter *adap) 1338 { 1339 unsigned int timeo; 1340 1341 timeo = adap->params.linkpoll_period ? 1342 (HZ * adap->params.linkpoll_period) / 10 : 1343 adap->params.stats_update_period * HZ; 1344 if (timeo) 1345 queue_delayed_work(cxgb3_wq, &adap->adap_check_task, timeo); 1346 } 1347 1348 static int offload_open(struct net_device *dev) 1349 { 1350 struct port_info *pi = netdev_priv(dev); 1351 struct adapter *adapter = pi->adapter; 1352 struct t3cdev *tdev = dev2t3cdev(dev); 1353 int adap_up = adapter->open_device_map & PORT_MASK; 1354 int err; 1355 1356 if (test_and_set_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) 1357 return 0; 1358 1359 if (!adap_up && (err = cxgb_up(adapter)) < 0) 1360 goto out; 1361 1362 t3_tp_set_offload_mode(adapter, 1); 1363 tdev->lldev = adapter->port[0]; 1364 err = cxgb3_offload_activate(adapter); 1365 if (err) 1366 goto out; 1367 1368 init_port_mtus(adapter); 1369 t3_load_mtus(adapter, adapter->params.mtus, adapter->params.a_wnd, 1370 adapter->params.b_wnd, 1371 adapter->params.rev == 0 ? 1372 adapter->port[0]->mtu : 0xffff); 1373 init_smt(adapter); 1374 1375 if (sysfs_create_group(&tdev->lldev->dev.kobj, &offload_attr_group)) 1376 dev_dbg(&dev->dev, "cannot create sysfs group\n"); 1377 1378 /* Call back all registered clients */ 1379 cxgb3_add_clients(tdev); 1380 1381 out: 1382 /* restore them in case the offload module has changed them */ 1383 if (err) { 1384 t3_tp_set_offload_mode(adapter, 0); 1385 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); 1386 cxgb3_set_dummy_ops(tdev); 1387 } 1388 return err; 1389 } 1390 1391 static int offload_close(struct t3cdev *tdev) 1392 { 1393 struct adapter *adapter = tdev2adap(tdev); 1394 struct t3c_data *td = T3C_DATA(tdev); 1395 1396 if (!test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) 1397 return 0; 1398 1399 /* Call back all registered clients */ 1400 cxgb3_remove_clients(tdev); 1401 1402 sysfs_remove_group(&tdev->lldev->dev.kobj, &offload_attr_group); 1403 1404 /* Flush work scheduled while releasing TIDs */ 1405 flush_work(&td->tid_release_task); 1406 1407 tdev->lldev = NULL; 1408 cxgb3_set_dummy_ops(tdev); 1409 t3_tp_set_offload_mode(adapter, 0); 1410 clear_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); 1411 1412 if (!adapter->open_device_map) 1413 cxgb_down(adapter, 0); 1414 1415 cxgb3_offload_deactivate(adapter); 1416 return 0; 1417 } 1418 1419 static int cxgb_open(struct net_device *dev) 1420 { 1421 struct port_info *pi = netdev_priv(dev); 1422 struct adapter *adapter = pi->adapter; 1423 int other_ports = adapter->open_device_map & PORT_MASK; 1424 int err; 1425 1426 if (!adapter->open_device_map && (err = cxgb_up(adapter)) < 0) 1427 return err; 1428 1429 set_bit(pi->port_id, &adapter->open_device_map); 1430 if (is_offload(adapter) && !ofld_disable) { 1431 err = offload_open(dev); 1432 if (err) 1433 pr_warn("Could not initialize offload capabilities\n"); 1434 } 1435 1436 netif_set_real_num_tx_queues(dev, pi->nqsets); 1437 err = netif_set_real_num_rx_queues(dev, pi->nqsets); 1438 if (err) 1439 return err; 1440 link_start(dev); 1441 t3_port_intr_enable(adapter, pi->port_id); 1442 netif_tx_start_all_queues(dev); 1443 if (!other_ports) 1444 schedule_chk_task(adapter); 1445 1446 cxgb3_event_notify(&adapter->tdev, OFFLOAD_PORT_UP, pi->port_id); 1447 return 0; 1448 } 1449 1450 static int __cxgb_close(struct net_device *dev, int on_wq) 1451 { 1452 struct port_info *pi = netdev_priv(dev); 1453 struct adapter *adapter = pi->adapter; 1454 1455 1456 if (!adapter->open_device_map) 1457 return 0; 1458 1459 /* Stop link fault interrupts */ 1460 t3_xgm_intr_disable(adapter, pi->port_id); 1461 t3_read_reg(adapter, A_XGM_INT_STATUS + pi->mac.offset); 1462 1463 t3_port_intr_disable(adapter, pi->port_id); 1464 netif_tx_stop_all_queues(dev); 1465 pi->phy.ops->power_down(&pi->phy, 1); 1466 netif_carrier_off(dev); 1467 t3_mac_disable(&pi->mac, MAC_DIRECTION_TX | MAC_DIRECTION_RX); 1468 1469 spin_lock_irq(&adapter->work_lock); /* sync with update task */ 1470 clear_bit(pi->port_id, &adapter->open_device_map); 1471 spin_unlock_irq(&adapter->work_lock); 1472 1473 if (!(adapter->open_device_map & PORT_MASK)) 1474 cancel_delayed_work_sync(&adapter->adap_check_task); 1475 1476 if (!adapter->open_device_map) 1477 cxgb_down(adapter, on_wq); 1478 1479 cxgb3_event_notify(&adapter->tdev, OFFLOAD_PORT_DOWN, pi->port_id); 1480 return 0; 1481 } 1482 1483 static int cxgb_close(struct net_device *dev) 1484 { 1485 return __cxgb_close(dev, 0); 1486 } 1487 1488 static struct net_device_stats *cxgb_get_stats(struct net_device *dev) 1489 { 1490 struct port_info *pi = netdev_priv(dev); 1491 struct adapter *adapter = pi->adapter; 1492 struct net_device_stats *ns = &dev->stats; 1493 const struct mac_stats *pstats; 1494 1495 spin_lock(&adapter->stats_lock); 1496 pstats = t3_mac_update_stats(&pi->mac); 1497 spin_unlock(&adapter->stats_lock); 1498 1499 ns->tx_bytes = pstats->tx_octets; 1500 ns->tx_packets = pstats->tx_frames; 1501 ns->rx_bytes = pstats->rx_octets; 1502 ns->rx_packets = pstats->rx_frames; 1503 ns->multicast = pstats->rx_mcast_frames; 1504 1505 ns->tx_errors = pstats->tx_underrun; 1506 ns->rx_errors = pstats->rx_symbol_errs + pstats->rx_fcs_errs + 1507 pstats->rx_too_long + pstats->rx_jabber + pstats->rx_short + 1508 pstats->rx_fifo_ovfl; 1509 1510 /* detailed rx_errors */ 1511 ns->rx_length_errors = pstats->rx_jabber + pstats->rx_too_long; 1512 ns->rx_over_errors = 0; 1513 ns->rx_crc_errors = pstats->rx_fcs_errs; 1514 ns->rx_frame_errors = pstats->rx_symbol_errs; 1515 ns->rx_fifo_errors = pstats->rx_fifo_ovfl; 1516 ns->rx_missed_errors = pstats->rx_cong_drops; 1517 1518 /* detailed tx_errors */ 1519 ns->tx_aborted_errors = 0; 1520 ns->tx_carrier_errors = 0; 1521 ns->tx_fifo_errors = pstats->tx_underrun; 1522 ns->tx_heartbeat_errors = 0; 1523 ns->tx_window_errors = 0; 1524 return ns; 1525 } 1526 1527 static u32 get_msglevel(struct net_device *dev) 1528 { 1529 struct port_info *pi = netdev_priv(dev); 1530 struct adapter *adapter = pi->adapter; 1531 1532 return adapter->msg_enable; 1533 } 1534 1535 static void set_msglevel(struct net_device *dev, u32 val) 1536 { 1537 struct port_info *pi = netdev_priv(dev); 1538 struct adapter *adapter = pi->adapter; 1539 1540 adapter->msg_enable = val; 1541 } 1542 1543 static const char stats_strings[][ETH_GSTRING_LEN] = { 1544 "TxOctetsOK ", 1545 "TxFramesOK ", 1546 "TxMulticastFramesOK", 1547 "TxBroadcastFramesOK", 1548 "TxPauseFrames ", 1549 "TxUnderrun ", 1550 "TxExtUnderrun ", 1551 1552 "TxFrames64 ", 1553 "TxFrames65To127 ", 1554 "TxFrames128To255 ", 1555 "TxFrames256To511 ", 1556 "TxFrames512To1023 ", 1557 "TxFrames1024To1518 ", 1558 "TxFrames1519ToMax ", 1559 1560 "RxOctetsOK ", 1561 "RxFramesOK ", 1562 "RxMulticastFramesOK", 1563 "RxBroadcastFramesOK", 1564 "RxPauseFrames ", 1565 "RxFCSErrors ", 1566 "RxSymbolErrors ", 1567 "RxShortErrors ", 1568 "RxJabberErrors ", 1569 "RxLengthErrors ", 1570 "RxFIFOoverflow ", 1571 1572 "RxFrames64 ", 1573 "RxFrames65To127 ", 1574 "RxFrames128To255 ", 1575 "RxFrames256To511 ", 1576 "RxFrames512To1023 ", 1577 "RxFrames1024To1518 ", 1578 "RxFrames1519ToMax ", 1579 1580 "PhyFIFOErrors ", 1581 "TSO ", 1582 "VLANextractions ", 1583 "VLANinsertions ", 1584 "TxCsumOffload ", 1585 "RxCsumGood ", 1586 "LroAggregated ", 1587 "LroFlushed ", 1588 "LroNoDesc ", 1589 "RxDrops ", 1590 1591 "CheckTXEnToggled ", 1592 "CheckResets ", 1593 1594 "LinkFaults ", 1595 }; 1596 1597 static int get_sset_count(struct net_device *dev, int sset) 1598 { 1599 switch (sset) { 1600 case ETH_SS_STATS: 1601 return ARRAY_SIZE(stats_strings); 1602 default: 1603 return -EOPNOTSUPP; 1604 } 1605 } 1606 1607 #define T3_REGMAP_SIZE (3 * 1024) 1608 1609 static int get_regs_len(struct net_device *dev) 1610 { 1611 return T3_REGMAP_SIZE; 1612 } 1613 1614 static int get_eeprom_len(struct net_device *dev) 1615 { 1616 return EEPROMSIZE; 1617 } 1618 1619 static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 1620 { 1621 struct port_info *pi = netdev_priv(dev); 1622 struct adapter *adapter = pi->adapter; 1623 u32 fw_vers = 0; 1624 u32 tp_vers = 0; 1625 1626 spin_lock(&adapter->stats_lock); 1627 t3_get_fw_version(adapter, &fw_vers); 1628 t3_get_tp_version(adapter, &tp_vers); 1629 spin_unlock(&adapter->stats_lock); 1630 1631 strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); 1632 strlcpy(info->version, DRV_VERSION, sizeof(info->version)); 1633 strlcpy(info->bus_info, pci_name(adapter->pdev), 1634 sizeof(info->bus_info)); 1635 if (fw_vers) 1636 snprintf(info->fw_version, sizeof(info->fw_version), 1637 "%s %u.%u.%u TP %u.%u.%u", 1638 G_FW_VERSION_TYPE(fw_vers) ? "T" : "N", 1639 G_FW_VERSION_MAJOR(fw_vers), 1640 G_FW_VERSION_MINOR(fw_vers), 1641 G_FW_VERSION_MICRO(fw_vers), 1642 G_TP_VERSION_MAJOR(tp_vers), 1643 G_TP_VERSION_MINOR(tp_vers), 1644 G_TP_VERSION_MICRO(tp_vers)); 1645 } 1646 1647 static void get_strings(struct net_device *dev, u32 stringset, u8 * data) 1648 { 1649 if (stringset == ETH_SS_STATS) 1650 memcpy(data, stats_strings, sizeof(stats_strings)); 1651 } 1652 1653 static unsigned long collect_sge_port_stats(struct adapter *adapter, 1654 struct port_info *p, int idx) 1655 { 1656 int i; 1657 unsigned long tot = 0; 1658 1659 for (i = p->first_qset; i < p->first_qset + p->nqsets; ++i) 1660 tot += adapter->sge.qs[i].port_stats[idx]; 1661 return tot; 1662 } 1663 1664 static void get_stats(struct net_device *dev, struct ethtool_stats *stats, 1665 u64 *data) 1666 { 1667 struct port_info *pi = netdev_priv(dev); 1668 struct adapter *adapter = pi->adapter; 1669 const struct mac_stats *s; 1670 1671 spin_lock(&adapter->stats_lock); 1672 s = t3_mac_update_stats(&pi->mac); 1673 spin_unlock(&adapter->stats_lock); 1674 1675 *data++ = s->tx_octets; 1676 *data++ = s->tx_frames; 1677 *data++ = s->tx_mcast_frames; 1678 *data++ = s->tx_bcast_frames; 1679 *data++ = s->tx_pause; 1680 *data++ = s->tx_underrun; 1681 *data++ = s->tx_fifo_urun; 1682 1683 *data++ = s->tx_frames_64; 1684 *data++ = s->tx_frames_65_127; 1685 *data++ = s->tx_frames_128_255; 1686 *data++ = s->tx_frames_256_511; 1687 *data++ = s->tx_frames_512_1023; 1688 *data++ = s->tx_frames_1024_1518; 1689 *data++ = s->tx_frames_1519_max; 1690 1691 *data++ = s->rx_octets; 1692 *data++ = s->rx_frames; 1693 *data++ = s->rx_mcast_frames; 1694 *data++ = s->rx_bcast_frames; 1695 *data++ = s->rx_pause; 1696 *data++ = s->rx_fcs_errs; 1697 *data++ = s->rx_symbol_errs; 1698 *data++ = s->rx_short; 1699 *data++ = s->rx_jabber; 1700 *data++ = s->rx_too_long; 1701 *data++ = s->rx_fifo_ovfl; 1702 1703 *data++ = s->rx_frames_64; 1704 *data++ = s->rx_frames_65_127; 1705 *data++ = s->rx_frames_128_255; 1706 *data++ = s->rx_frames_256_511; 1707 *data++ = s->rx_frames_512_1023; 1708 *data++ = s->rx_frames_1024_1518; 1709 *data++ = s->rx_frames_1519_max; 1710 1711 *data++ = pi->phy.fifo_errors; 1712 1713 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TSO); 1714 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANEX); 1715 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_VLANINS); 1716 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_TX_CSUM); 1717 *data++ = collect_sge_port_stats(adapter, pi, SGE_PSTAT_RX_CSUM_GOOD); 1718 *data++ = 0; 1719 *data++ = 0; 1720 *data++ = 0; 1721 *data++ = s->rx_cong_drops; 1722 1723 *data++ = s->num_toggled; 1724 *data++ = s->num_resets; 1725 1726 *data++ = s->link_faults; 1727 } 1728 1729 static inline void reg_block_dump(struct adapter *ap, void *buf, 1730 unsigned int start, unsigned int end) 1731 { 1732 u32 *p = buf + start; 1733 1734 for (; start <= end; start += sizeof(u32)) 1735 *p++ = t3_read_reg(ap, start); 1736 } 1737 1738 static void get_regs(struct net_device *dev, struct ethtool_regs *regs, 1739 void *buf) 1740 { 1741 struct port_info *pi = netdev_priv(dev); 1742 struct adapter *ap = pi->adapter; 1743 1744 /* 1745 * Version scheme: 1746 * bits 0..9: chip version 1747 * bits 10..15: chip revision 1748 * bit 31: set for PCIe cards 1749 */ 1750 regs->version = 3 | (ap->params.rev << 10) | (is_pcie(ap) << 31); 1751 1752 /* 1753 * We skip the MAC statistics registers because they are clear-on-read. 1754 * Also reading multi-register stats would need to synchronize with the 1755 * periodic mac stats accumulation. Hard to justify the complexity. 1756 */ 1757 memset(buf, 0, T3_REGMAP_SIZE); 1758 reg_block_dump(ap, buf, 0, A_SG_RSPQ_CREDIT_RETURN); 1759 reg_block_dump(ap, buf, A_SG_HI_DRB_HI_THRSH, A_ULPRX_PBL_ULIMIT); 1760 reg_block_dump(ap, buf, A_ULPTX_CONFIG, A_MPS_INT_CAUSE); 1761 reg_block_dump(ap, buf, A_CPL_SWITCH_CNTRL, A_CPL_MAP_TBL_DATA); 1762 reg_block_dump(ap, buf, A_SMB_GLOBAL_TIME_CFG, A_XGM_SERDES_STAT3); 1763 reg_block_dump(ap, buf, A_XGM_SERDES_STATUS0, 1764 XGM_REG(A_XGM_SERDES_STAT3, 1)); 1765 reg_block_dump(ap, buf, XGM_REG(A_XGM_SERDES_STATUS0, 1), 1766 XGM_REG(A_XGM_RX_SPI4_SOP_EOP_CNT, 1)); 1767 } 1768 1769 static int restart_autoneg(struct net_device *dev) 1770 { 1771 struct port_info *p = netdev_priv(dev); 1772 1773 if (!netif_running(dev)) 1774 return -EAGAIN; 1775 if (p->link_config.autoneg != AUTONEG_ENABLE) 1776 return -EINVAL; 1777 p->phy.ops->autoneg_restart(&p->phy); 1778 return 0; 1779 } 1780 1781 static int set_phys_id(struct net_device *dev, 1782 enum ethtool_phys_id_state state) 1783 { 1784 struct port_info *pi = netdev_priv(dev); 1785 struct adapter *adapter = pi->adapter; 1786 1787 switch (state) { 1788 case ETHTOOL_ID_ACTIVE: 1789 return 1; /* cycle on/off once per second */ 1790 1791 case ETHTOOL_ID_OFF: 1792 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 0); 1793 break; 1794 1795 case ETHTOOL_ID_ON: 1796 case ETHTOOL_ID_INACTIVE: 1797 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 1798 F_GPIO0_OUT_VAL); 1799 } 1800 1801 return 0; 1802 } 1803 1804 static int get_link_ksettings(struct net_device *dev, 1805 struct ethtool_link_ksettings *cmd) 1806 { 1807 struct port_info *p = netdev_priv(dev); 1808 u32 supported; 1809 1810 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 1811 p->link_config.supported); 1812 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 1813 p->link_config.advertising); 1814 1815 if (netif_carrier_ok(dev)) { 1816 cmd->base.speed = p->link_config.speed; 1817 cmd->base.duplex = p->link_config.duplex; 1818 } else { 1819 cmd->base.speed = SPEED_UNKNOWN; 1820 cmd->base.duplex = DUPLEX_UNKNOWN; 1821 } 1822 1823 ethtool_convert_link_mode_to_legacy_u32(&supported, 1824 cmd->link_modes.supported); 1825 1826 cmd->base.port = (supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE; 1827 cmd->base.phy_address = p->phy.mdio.prtad; 1828 cmd->base.autoneg = p->link_config.autoneg; 1829 return 0; 1830 } 1831 1832 static int speed_duplex_to_caps(int speed, int duplex) 1833 { 1834 int cap = 0; 1835 1836 switch (speed) { 1837 case SPEED_10: 1838 if (duplex == DUPLEX_FULL) 1839 cap = SUPPORTED_10baseT_Full; 1840 else 1841 cap = SUPPORTED_10baseT_Half; 1842 break; 1843 case SPEED_100: 1844 if (duplex == DUPLEX_FULL) 1845 cap = SUPPORTED_100baseT_Full; 1846 else 1847 cap = SUPPORTED_100baseT_Half; 1848 break; 1849 case SPEED_1000: 1850 if (duplex == DUPLEX_FULL) 1851 cap = SUPPORTED_1000baseT_Full; 1852 else 1853 cap = SUPPORTED_1000baseT_Half; 1854 break; 1855 case SPEED_10000: 1856 if (duplex == DUPLEX_FULL) 1857 cap = SUPPORTED_10000baseT_Full; 1858 } 1859 return cap; 1860 } 1861 1862 #define ADVERTISED_MASK (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | \ 1863 ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | \ 1864 ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full | \ 1865 ADVERTISED_10000baseT_Full) 1866 1867 static int set_link_ksettings(struct net_device *dev, 1868 const struct ethtool_link_ksettings *cmd) 1869 { 1870 struct port_info *p = netdev_priv(dev); 1871 struct link_config *lc = &p->link_config; 1872 u32 advertising; 1873 1874 ethtool_convert_link_mode_to_legacy_u32(&advertising, 1875 cmd->link_modes.advertising); 1876 1877 if (!(lc->supported & SUPPORTED_Autoneg)) { 1878 /* 1879 * PHY offers a single speed/duplex. See if that's what's 1880 * being requested. 1881 */ 1882 if (cmd->base.autoneg == AUTONEG_DISABLE) { 1883 u32 speed = cmd->base.speed; 1884 int cap = speed_duplex_to_caps(speed, cmd->base.duplex); 1885 if (lc->supported & cap) 1886 return 0; 1887 } 1888 return -EINVAL; 1889 } 1890 1891 if (cmd->base.autoneg == AUTONEG_DISABLE) { 1892 u32 speed = cmd->base.speed; 1893 int cap = speed_duplex_to_caps(speed, cmd->base.duplex); 1894 1895 if (!(lc->supported & cap) || (speed == SPEED_1000)) 1896 return -EINVAL; 1897 lc->requested_speed = speed; 1898 lc->requested_duplex = cmd->base.duplex; 1899 lc->advertising = 0; 1900 } else { 1901 advertising &= ADVERTISED_MASK; 1902 advertising &= lc->supported; 1903 if (!advertising) 1904 return -EINVAL; 1905 lc->requested_speed = SPEED_INVALID; 1906 lc->requested_duplex = DUPLEX_INVALID; 1907 lc->advertising = advertising | ADVERTISED_Autoneg; 1908 } 1909 lc->autoneg = cmd->base.autoneg; 1910 if (netif_running(dev)) 1911 t3_link_start(&p->phy, &p->mac, lc); 1912 return 0; 1913 } 1914 1915 static void get_pauseparam(struct net_device *dev, 1916 struct ethtool_pauseparam *epause) 1917 { 1918 struct port_info *p = netdev_priv(dev); 1919 1920 epause->autoneg = (p->link_config.requested_fc & PAUSE_AUTONEG) != 0; 1921 epause->rx_pause = (p->link_config.fc & PAUSE_RX) != 0; 1922 epause->tx_pause = (p->link_config.fc & PAUSE_TX) != 0; 1923 } 1924 1925 static int set_pauseparam(struct net_device *dev, 1926 struct ethtool_pauseparam *epause) 1927 { 1928 struct port_info *p = netdev_priv(dev); 1929 struct link_config *lc = &p->link_config; 1930 1931 if (epause->autoneg == AUTONEG_DISABLE) 1932 lc->requested_fc = 0; 1933 else if (lc->supported & SUPPORTED_Autoneg) 1934 lc->requested_fc = PAUSE_AUTONEG; 1935 else 1936 return -EINVAL; 1937 1938 if (epause->rx_pause) 1939 lc->requested_fc |= PAUSE_RX; 1940 if (epause->tx_pause) 1941 lc->requested_fc |= PAUSE_TX; 1942 if (lc->autoneg == AUTONEG_ENABLE) { 1943 if (netif_running(dev)) 1944 t3_link_start(&p->phy, &p->mac, lc); 1945 } else { 1946 lc->fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); 1947 if (netif_running(dev)) 1948 t3_mac_set_speed_duplex_fc(&p->mac, -1, -1, lc->fc); 1949 } 1950 return 0; 1951 } 1952 1953 static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e) 1954 { 1955 struct port_info *pi = netdev_priv(dev); 1956 struct adapter *adapter = pi->adapter; 1957 const struct qset_params *q = &adapter->params.sge.qset[pi->first_qset]; 1958 1959 e->rx_max_pending = MAX_RX_BUFFERS; 1960 e->rx_jumbo_max_pending = MAX_RX_JUMBO_BUFFERS; 1961 e->tx_max_pending = MAX_TXQ_ENTRIES; 1962 1963 e->rx_pending = q->fl_size; 1964 e->rx_mini_pending = q->rspq_size; 1965 e->rx_jumbo_pending = q->jumbo_size; 1966 e->tx_pending = q->txq_size[0]; 1967 } 1968 1969 static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e) 1970 { 1971 struct port_info *pi = netdev_priv(dev); 1972 struct adapter *adapter = pi->adapter; 1973 struct qset_params *q; 1974 int i; 1975 1976 if (e->rx_pending > MAX_RX_BUFFERS || 1977 e->rx_jumbo_pending > MAX_RX_JUMBO_BUFFERS || 1978 e->tx_pending > MAX_TXQ_ENTRIES || 1979 e->rx_mini_pending > MAX_RSPQ_ENTRIES || 1980 e->rx_mini_pending < MIN_RSPQ_ENTRIES || 1981 e->rx_pending < MIN_FL_ENTRIES || 1982 e->rx_jumbo_pending < MIN_FL_ENTRIES || 1983 e->tx_pending < adapter->params.nports * MIN_TXQ_ENTRIES) 1984 return -EINVAL; 1985 1986 if (adapter->flags & FULL_INIT_DONE) 1987 return -EBUSY; 1988 1989 q = &adapter->params.sge.qset[pi->first_qset]; 1990 for (i = 0; i < pi->nqsets; ++i, ++q) { 1991 q->rspq_size = e->rx_mini_pending; 1992 q->fl_size = e->rx_pending; 1993 q->jumbo_size = e->rx_jumbo_pending; 1994 q->txq_size[0] = e->tx_pending; 1995 q->txq_size[1] = e->tx_pending; 1996 q->txq_size[2] = e->tx_pending; 1997 } 1998 return 0; 1999 } 2000 2001 static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c) 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 { 2024 struct port_info *pi = netdev_priv(dev); 2025 struct adapter *adapter = pi->adapter; 2026 struct qset_params *q = adapter->params.sge.qset; 2027 2028 c->rx_coalesce_usecs = q->coalesce_usecs; 2029 return 0; 2030 } 2031 2032 static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e, 2033 u8 * data) 2034 { 2035 struct port_info *pi = netdev_priv(dev); 2036 struct adapter *adapter = pi->adapter; 2037 int i, err = 0; 2038 2039 u8 *buf = kmalloc(EEPROMSIZE, GFP_KERNEL); 2040 if (!buf) 2041 return -ENOMEM; 2042 2043 e->magic = EEPROM_MAGIC; 2044 for (i = e->offset & ~3; !err && i < e->offset + e->len; i += 4) 2045 err = t3_seeprom_read(adapter, i, (__le32 *) & buf[i]); 2046 2047 if (!err) 2048 memcpy(data, buf + e->offset, e->len); 2049 kfree(buf); 2050 return err; 2051 } 2052 2053 static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, 2054 u8 * data) 2055 { 2056 struct port_info *pi = netdev_priv(dev); 2057 struct adapter *adapter = pi->adapter; 2058 u32 aligned_offset, aligned_len; 2059 __le32 *p; 2060 u8 *buf; 2061 int err; 2062 2063 if (eeprom->magic != EEPROM_MAGIC) 2064 return -EINVAL; 2065 2066 aligned_offset = eeprom->offset & ~3; 2067 aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3; 2068 2069 if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) { 2070 buf = kmalloc(aligned_len, GFP_KERNEL); 2071 if (!buf) 2072 return -ENOMEM; 2073 err = t3_seeprom_read(adapter, aligned_offset, (__le32 *) buf); 2074 if (!err && aligned_len > 4) 2075 err = t3_seeprom_read(adapter, 2076 aligned_offset + aligned_len - 4, 2077 (__le32 *) & buf[aligned_len - 4]); 2078 if (err) 2079 goto out; 2080 memcpy(buf + (eeprom->offset & 3), data, eeprom->len); 2081 } else 2082 buf = data; 2083 2084 err = t3_seeprom_wp(adapter, 0); 2085 if (err) 2086 goto out; 2087 2088 for (p = (__le32 *) buf; !err && aligned_len; aligned_len -= 4, p++) { 2089 err = t3_seeprom_write(adapter, aligned_offset, *p); 2090 aligned_offset += 4; 2091 } 2092 2093 if (!err) 2094 err = t3_seeprom_wp(adapter, 1); 2095 out: 2096 if (buf != data) 2097 kfree(buf); 2098 return err; 2099 } 2100 2101 static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 2102 { 2103 wol->supported = 0; 2104 wol->wolopts = 0; 2105 memset(&wol->sopass, 0, sizeof(wol->sopass)); 2106 } 2107 2108 static const struct ethtool_ops cxgb_ethtool_ops = { 2109 .get_drvinfo = get_drvinfo, 2110 .get_msglevel = get_msglevel, 2111 .set_msglevel = set_msglevel, 2112 .get_ringparam = get_sge_param, 2113 .set_ringparam = set_sge_param, 2114 .get_coalesce = get_coalesce, 2115 .set_coalesce = set_coalesce, 2116 .get_eeprom_len = get_eeprom_len, 2117 .get_eeprom = get_eeprom, 2118 .set_eeprom = set_eeprom, 2119 .get_pauseparam = get_pauseparam, 2120 .set_pauseparam = set_pauseparam, 2121 .get_link = ethtool_op_get_link, 2122 .get_strings = get_strings, 2123 .set_phys_id = set_phys_id, 2124 .nway_reset = restart_autoneg, 2125 .get_sset_count = get_sset_count, 2126 .get_ethtool_stats = get_stats, 2127 .get_regs_len = get_regs_len, 2128 .get_regs = get_regs, 2129 .get_wol = get_wol, 2130 .get_link_ksettings = get_link_ksettings, 2131 .set_link_ksettings = set_link_ksettings, 2132 }; 2133 2134 static int in_range(int val, int lo, int hi) 2135 { 2136 return val < 0 || (val <= hi && val >= lo); 2137 } 2138 2139 static int cxgb_extension_ioctl(struct net_device *dev, void __user *useraddr) 2140 { 2141 struct port_info *pi = netdev_priv(dev); 2142 struct adapter *adapter = pi->adapter; 2143 u32 cmd; 2144 int ret; 2145 2146 if (copy_from_user(&cmd, useraddr, sizeof(cmd))) 2147 return -EFAULT; 2148 2149 switch (cmd) { 2150 case CHELSIO_SET_QSET_PARAMS:{ 2151 int i; 2152 struct qset_params *q; 2153 struct ch_qset_params t; 2154 int q1 = pi->first_qset; 2155 int nqsets = pi->nqsets; 2156 2157 if (!capable(CAP_NET_ADMIN)) 2158 return -EPERM; 2159 if (copy_from_user(&t, useraddr, sizeof(t))) 2160 return -EFAULT; 2161 if (t.cmd != CHELSIO_SET_QSET_PARAMS) 2162 return -EINVAL; 2163 if (t.qset_idx >= SGE_QSETS) 2164 return -EINVAL; 2165 if (!in_range(t.intr_lat, 0, M_NEWTIMER) || 2166 !in_range(t.cong_thres, 0, 255) || 2167 !in_range(t.txq_size[0], MIN_TXQ_ENTRIES, 2168 MAX_TXQ_ENTRIES) || 2169 !in_range(t.txq_size[1], MIN_TXQ_ENTRIES, 2170 MAX_TXQ_ENTRIES) || 2171 !in_range(t.txq_size[2], MIN_CTRL_TXQ_ENTRIES, 2172 MAX_CTRL_TXQ_ENTRIES) || 2173 !in_range(t.fl_size[0], MIN_FL_ENTRIES, 2174 MAX_RX_BUFFERS) || 2175 !in_range(t.fl_size[1], MIN_FL_ENTRIES, 2176 MAX_RX_JUMBO_BUFFERS) || 2177 !in_range(t.rspq_size, MIN_RSPQ_ENTRIES, 2178 MAX_RSPQ_ENTRIES)) 2179 return -EINVAL; 2180 2181 if ((adapter->flags & FULL_INIT_DONE) && 2182 (t.rspq_size >= 0 || t.fl_size[0] >= 0 || 2183 t.fl_size[1] >= 0 || t.txq_size[0] >= 0 || 2184 t.txq_size[1] >= 0 || t.txq_size[2] >= 0 || 2185 t.polling >= 0 || t.cong_thres >= 0)) 2186 return -EBUSY; 2187 2188 /* Allow setting of any available qset when offload enabled */ 2189 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2190 q1 = 0; 2191 for_each_port(adapter, i) { 2192 pi = adap2pinfo(adapter, i); 2193 nqsets += pi->first_qset + pi->nqsets; 2194 } 2195 } 2196 2197 if (t.qset_idx < q1) 2198 return -EINVAL; 2199 if (t.qset_idx > q1 + nqsets - 1) 2200 return -EINVAL; 2201 2202 q = &adapter->params.sge.qset[t.qset_idx]; 2203 2204 if (t.rspq_size >= 0) 2205 q->rspq_size = t.rspq_size; 2206 if (t.fl_size[0] >= 0) 2207 q->fl_size = t.fl_size[0]; 2208 if (t.fl_size[1] >= 0) 2209 q->jumbo_size = t.fl_size[1]; 2210 if (t.txq_size[0] >= 0) 2211 q->txq_size[0] = t.txq_size[0]; 2212 if (t.txq_size[1] >= 0) 2213 q->txq_size[1] = t.txq_size[1]; 2214 if (t.txq_size[2] >= 0) 2215 q->txq_size[2] = t.txq_size[2]; 2216 if (t.cong_thres >= 0) 2217 q->cong_thres = t.cong_thres; 2218 if (t.intr_lat >= 0) { 2219 struct sge_qset *qs = 2220 &adapter->sge.qs[t.qset_idx]; 2221 2222 q->coalesce_usecs = t.intr_lat; 2223 t3_update_qset_coalesce(qs, q); 2224 } 2225 if (t.polling >= 0) { 2226 if (adapter->flags & USING_MSIX) 2227 q->polling = t.polling; 2228 else { 2229 /* No polling with INTx for T3A */ 2230 if (adapter->params.rev == 0 && 2231 !(adapter->flags & USING_MSI)) 2232 t.polling = 0; 2233 2234 for (i = 0; i < SGE_QSETS; i++) { 2235 q = &adapter->params.sge. 2236 qset[i]; 2237 q->polling = t.polling; 2238 } 2239 } 2240 } 2241 2242 if (t.lro >= 0) { 2243 if (t.lro) 2244 dev->wanted_features |= NETIF_F_GRO; 2245 else 2246 dev->wanted_features &= ~NETIF_F_GRO; 2247 netdev_update_features(dev); 2248 } 2249 2250 break; 2251 } 2252 case CHELSIO_GET_QSET_PARAMS:{ 2253 struct qset_params *q; 2254 struct ch_qset_params t; 2255 int q1 = pi->first_qset; 2256 int nqsets = pi->nqsets; 2257 int i; 2258 2259 if (copy_from_user(&t, useraddr, sizeof(t))) 2260 return -EFAULT; 2261 2262 if (t.cmd != CHELSIO_GET_QSET_PARAMS) 2263 return -EINVAL; 2264 2265 /* Display qsets for all ports when offload enabled */ 2266 if (test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2267 q1 = 0; 2268 for_each_port(adapter, i) { 2269 pi = adap2pinfo(adapter, i); 2270 nqsets = pi->first_qset + pi->nqsets; 2271 } 2272 } 2273 2274 if (t.qset_idx >= nqsets) 2275 return -EINVAL; 2276 t.qset_idx = array_index_nospec(t.qset_idx, nqsets); 2277 2278 q = &adapter->params.sge.qset[q1 + t.qset_idx]; 2279 t.rspq_size = q->rspq_size; 2280 t.txq_size[0] = q->txq_size[0]; 2281 t.txq_size[1] = q->txq_size[1]; 2282 t.txq_size[2] = q->txq_size[2]; 2283 t.fl_size[0] = q->fl_size; 2284 t.fl_size[1] = q->jumbo_size; 2285 t.polling = q->polling; 2286 t.lro = !!(dev->features & NETIF_F_GRO); 2287 t.intr_lat = q->coalesce_usecs; 2288 t.cong_thres = q->cong_thres; 2289 t.qnum = q1; 2290 2291 if (adapter->flags & USING_MSIX) 2292 t.vector = adapter->msix_info[q1 + t.qset_idx + 1].vec; 2293 else 2294 t.vector = adapter->pdev->irq; 2295 2296 if (copy_to_user(useraddr, &t, sizeof(t))) 2297 return -EFAULT; 2298 break; 2299 } 2300 case CHELSIO_SET_QSET_NUM:{ 2301 struct ch_reg edata; 2302 unsigned int i, first_qset = 0, other_qsets = 0; 2303 2304 if (!capable(CAP_NET_ADMIN)) 2305 return -EPERM; 2306 if (adapter->flags & FULL_INIT_DONE) 2307 return -EBUSY; 2308 if (copy_from_user(&edata, useraddr, sizeof(edata))) 2309 return -EFAULT; 2310 if (edata.cmd != CHELSIO_SET_QSET_NUM) 2311 return -EINVAL; 2312 if (edata.val < 1 || 2313 (edata.val > 1 && !(adapter->flags & USING_MSIX))) 2314 return -EINVAL; 2315 2316 for_each_port(adapter, i) 2317 if (adapter->port[i] && adapter->port[i] != dev) 2318 other_qsets += adap2pinfo(adapter, i)->nqsets; 2319 2320 if (edata.val + other_qsets > SGE_QSETS) 2321 return -EINVAL; 2322 2323 pi->nqsets = edata.val; 2324 2325 for_each_port(adapter, i) 2326 if (adapter->port[i]) { 2327 pi = adap2pinfo(adapter, i); 2328 pi->first_qset = first_qset; 2329 first_qset += pi->nqsets; 2330 } 2331 break; 2332 } 2333 case CHELSIO_GET_QSET_NUM:{ 2334 struct ch_reg edata; 2335 2336 memset(&edata, 0, sizeof(struct ch_reg)); 2337 2338 edata.cmd = CHELSIO_GET_QSET_NUM; 2339 edata.val = pi->nqsets; 2340 if (copy_to_user(useraddr, &edata, sizeof(edata))) 2341 return -EFAULT; 2342 break; 2343 } 2344 case CHELSIO_LOAD_FW:{ 2345 u8 *fw_data; 2346 struct ch_mem_range t; 2347 2348 if (!capable(CAP_SYS_RAWIO)) 2349 return -EPERM; 2350 if (copy_from_user(&t, useraddr, sizeof(t))) 2351 return -EFAULT; 2352 if (t.cmd != CHELSIO_LOAD_FW) 2353 return -EINVAL; 2354 /* Check t.len sanity ? */ 2355 fw_data = memdup_user(useraddr + sizeof(t), t.len); 2356 if (IS_ERR(fw_data)) 2357 return PTR_ERR(fw_data); 2358 2359 ret = t3_load_fw(adapter, fw_data, t.len); 2360 kfree(fw_data); 2361 if (ret) 2362 return ret; 2363 break; 2364 } 2365 case CHELSIO_SETMTUTAB:{ 2366 struct ch_mtus m; 2367 int i; 2368 2369 if (!is_offload(adapter)) 2370 return -EOPNOTSUPP; 2371 if (!capable(CAP_NET_ADMIN)) 2372 return -EPERM; 2373 if (offload_running(adapter)) 2374 return -EBUSY; 2375 if (copy_from_user(&m, useraddr, sizeof(m))) 2376 return -EFAULT; 2377 if (m.cmd != CHELSIO_SETMTUTAB) 2378 return -EINVAL; 2379 if (m.nmtus != NMTUS) 2380 return -EINVAL; 2381 if (m.mtus[0] < 81) /* accommodate SACK */ 2382 return -EINVAL; 2383 2384 /* MTUs must be in ascending order */ 2385 for (i = 1; i < NMTUS; ++i) 2386 if (m.mtus[i] < m.mtus[i - 1]) 2387 return -EINVAL; 2388 2389 memcpy(adapter->params.mtus, m.mtus, 2390 sizeof(adapter->params.mtus)); 2391 break; 2392 } 2393 case CHELSIO_GET_PM:{ 2394 struct tp_params *p = &adapter->params.tp; 2395 struct ch_pm m = {.cmd = CHELSIO_GET_PM }; 2396 2397 if (!is_offload(adapter)) 2398 return -EOPNOTSUPP; 2399 m.tx_pg_sz = p->tx_pg_size; 2400 m.tx_num_pg = p->tx_num_pgs; 2401 m.rx_pg_sz = p->rx_pg_size; 2402 m.rx_num_pg = p->rx_num_pgs; 2403 m.pm_total = p->pmtx_size + p->chan_rx_size * p->nchan; 2404 if (copy_to_user(useraddr, &m, sizeof(m))) 2405 return -EFAULT; 2406 break; 2407 } 2408 case CHELSIO_SET_PM:{ 2409 struct ch_pm m; 2410 struct tp_params *p = &adapter->params.tp; 2411 2412 if (!is_offload(adapter)) 2413 return -EOPNOTSUPP; 2414 if (!capable(CAP_NET_ADMIN)) 2415 return -EPERM; 2416 if (adapter->flags & FULL_INIT_DONE) 2417 return -EBUSY; 2418 if (copy_from_user(&m, useraddr, sizeof(m))) 2419 return -EFAULT; 2420 if (m.cmd != CHELSIO_SET_PM) 2421 return -EINVAL; 2422 if (!is_power_of_2(m.rx_pg_sz) || 2423 !is_power_of_2(m.tx_pg_sz)) 2424 return -EINVAL; /* not power of 2 */ 2425 if (!(m.rx_pg_sz & 0x14000)) 2426 return -EINVAL; /* not 16KB or 64KB */ 2427 if (!(m.tx_pg_sz & 0x1554000)) 2428 return -EINVAL; 2429 if (m.tx_num_pg == -1) 2430 m.tx_num_pg = p->tx_num_pgs; 2431 if (m.rx_num_pg == -1) 2432 m.rx_num_pg = p->rx_num_pgs; 2433 if (m.tx_num_pg % 24 || m.rx_num_pg % 24) 2434 return -EINVAL; 2435 if (m.rx_num_pg * m.rx_pg_sz > p->chan_rx_size || 2436 m.tx_num_pg * m.tx_pg_sz > p->chan_tx_size) 2437 return -EINVAL; 2438 p->rx_pg_size = m.rx_pg_sz; 2439 p->tx_pg_size = m.tx_pg_sz; 2440 p->rx_num_pgs = m.rx_num_pg; 2441 p->tx_num_pgs = m.tx_num_pg; 2442 break; 2443 } 2444 case CHELSIO_GET_MEM:{ 2445 struct ch_mem_range t; 2446 struct mc7 *mem; 2447 u64 buf[32]; 2448 2449 if (!is_offload(adapter)) 2450 return -EOPNOTSUPP; 2451 if (!(adapter->flags & FULL_INIT_DONE)) 2452 return -EIO; /* need the memory controllers */ 2453 if (copy_from_user(&t, useraddr, sizeof(t))) 2454 return -EFAULT; 2455 if (t.cmd != CHELSIO_GET_MEM) 2456 return -EINVAL; 2457 if ((t.addr & 7) || (t.len & 7)) 2458 return -EINVAL; 2459 if (t.mem_id == MEM_CM) 2460 mem = &adapter->cm; 2461 else if (t.mem_id == MEM_PMRX) 2462 mem = &adapter->pmrx; 2463 else if (t.mem_id == MEM_PMTX) 2464 mem = &adapter->pmtx; 2465 else 2466 return -EINVAL; 2467 2468 /* 2469 * Version scheme: 2470 * bits 0..9: chip version 2471 * bits 10..15: chip revision 2472 */ 2473 t.version = 3 | (adapter->params.rev << 10); 2474 if (copy_to_user(useraddr, &t, sizeof(t))) 2475 return -EFAULT; 2476 2477 /* 2478 * Read 256 bytes at a time as len can be large and we don't 2479 * want to use huge intermediate buffers. 2480 */ 2481 useraddr += sizeof(t); /* advance to start of buffer */ 2482 while (t.len) { 2483 unsigned int chunk = 2484 min_t(unsigned int, t.len, sizeof(buf)); 2485 2486 ret = 2487 t3_mc7_bd_read(mem, t.addr / 8, chunk / 8, 2488 buf); 2489 if (ret) 2490 return ret; 2491 if (copy_to_user(useraddr, buf, chunk)) 2492 return -EFAULT; 2493 useraddr += chunk; 2494 t.addr += chunk; 2495 t.len -= chunk; 2496 } 2497 break; 2498 } 2499 case CHELSIO_SET_TRACE_FILTER:{ 2500 struct ch_trace t; 2501 const struct trace_params *tp; 2502 2503 if (!capable(CAP_NET_ADMIN)) 2504 return -EPERM; 2505 if (!offload_running(adapter)) 2506 return -EAGAIN; 2507 if (copy_from_user(&t, useraddr, sizeof(t))) 2508 return -EFAULT; 2509 if (t.cmd != CHELSIO_SET_TRACE_FILTER) 2510 return -EINVAL; 2511 2512 tp = (const struct trace_params *)&t.sip; 2513 if (t.config_tx) 2514 t3_config_trace_filter(adapter, tp, 0, 2515 t.invert_match, 2516 t.trace_tx); 2517 if (t.config_rx) 2518 t3_config_trace_filter(adapter, tp, 1, 2519 t.invert_match, 2520 t.trace_rx); 2521 break; 2522 } 2523 default: 2524 return -EOPNOTSUPP; 2525 } 2526 return 0; 2527 } 2528 2529 static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd) 2530 { 2531 struct mii_ioctl_data *data = if_mii(req); 2532 struct port_info *pi = netdev_priv(dev); 2533 struct adapter *adapter = pi->adapter; 2534 2535 switch (cmd) { 2536 case SIOCGMIIREG: 2537 case SIOCSMIIREG: 2538 /* Convert phy_id from older PRTAD/DEVAD format */ 2539 if (is_10G(adapter) && 2540 !mdio_phy_id_is_c45(data->phy_id) && 2541 (data->phy_id & 0x1f00) && 2542 !(data->phy_id & 0xe0e0)) 2543 data->phy_id = mdio_phy_id_c45(data->phy_id >> 8, 2544 data->phy_id & 0x1f); 2545 /* FALLTHRU */ 2546 case SIOCGMIIPHY: 2547 return mdio_mii_ioctl(&pi->phy.mdio, data, cmd); 2548 case SIOCCHIOCTL: 2549 return cxgb_extension_ioctl(dev, req->ifr_data); 2550 default: 2551 return -EOPNOTSUPP; 2552 } 2553 } 2554 2555 static int cxgb_change_mtu(struct net_device *dev, int new_mtu) 2556 { 2557 struct port_info *pi = netdev_priv(dev); 2558 struct adapter *adapter = pi->adapter; 2559 int ret; 2560 2561 if ((ret = t3_mac_set_mtu(&pi->mac, new_mtu))) 2562 return ret; 2563 dev->mtu = new_mtu; 2564 init_port_mtus(adapter); 2565 if (adapter->params.rev == 0 && offload_running(adapter)) 2566 t3_load_mtus(adapter, adapter->params.mtus, 2567 adapter->params.a_wnd, adapter->params.b_wnd, 2568 adapter->port[0]->mtu); 2569 return 0; 2570 } 2571 2572 static int cxgb_set_mac_addr(struct net_device *dev, void *p) 2573 { 2574 struct port_info *pi = netdev_priv(dev); 2575 struct adapter *adapter = pi->adapter; 2576 struct sockaddr *addr = p; 2577 2578 if (!is_valid_ether_addr(addr->sa_data)) 2579 return -EADDRNOTAVAIL; 2580 2581 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); 2582 t3_mac_set_address(&pi->mac, LAN_MAC_IDX, dev->dev_addr); 2583 if (offload_running(adapter)) 2584 write_smt_entry(adapter, pi->port_id); 2585 return 0; 2586 } 2587 2588 static netdev_features_t cxgb_fix_features(struct net_device *dev, 2589 netdev_features_t features) 2590 { 2591 /* 2592 * Since there is no support for separate rx/tx vlan accel 2593 * enable/disable make sure tx flag is always in same state as rx. 2594 */ 2595 if (features & NETIF_F_HW_VLAN_CTAG_RX) 2596 features |= NETIF_F_HW_VLAN_CTAG_TX; 2597 else 2598 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2599 2600 return features; 2601 } 2602 2603 static int cxgb_set_features(struct net_device *dev, netdev_features_t features) 2604 { 2605 netdev_features_t changed = dev->features ^ features; 2606 2607 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 2608 cxgb_vlan_mode(dev, features); 2609 2610 return 0; 2611 } 2612 2613 #ifdef CONFIG_NET_POLL_CONTROLLER 2614 static void cxgb_netpoll(struct net_device *dev) 2615 { 2616 struct port_info *pi = netdev_priv(dev); 2617 struct adapter *adapter = pi->adapter; 2618 int qidx; 2619 2620 for (qidx = pi->first_qset; qidx < pi->first_qset + pi->nqsets; qidx++) { 2621 struct sge_qset *qs = &adapter->sge.qs[qidx]; 2622 void *source; 2623 2624 if (adapter->flags & USING_MSIX) 2625 source = qs; 2626 else 2627 source = adapter; 2628 2629 t3_intr_handler(adapter, qs->rspq.polling) (0, source); 2630 } 2631 } 2632 #endif 2633 2634 /* 2635 * Periodic accumulation of MAC statistics. 2636 */ 2637 static void mac_stats_update(struct adapter *adapter) 2638 { 2639 int i; 2640 2641 for_each_port(adapter, i) { 2642 struct net_device *dev = adapter->port[i]; 2643 struct port_info *p = netdev_priv(dev); 2644 2645 if (netif_running(dev)) { 2646 spin_lock(&adapter->stats_lock); 2647 t3_mac_update_stats(&p->mac); 2648 spin_unlock(&adapter->stats_lock); 2649 } 2650 } 2651 } 2652 2653 static void check_link_status(struct adapter *adapter) 2654 { 2655 int i; 2656 2657 for_each_port(adapter, i) { 2658 struct net_device *dev = adapter->port[i]; 2659 struct port_info *p = netdev_priv(dev); 2660 int link_fault; 2661 2662 spin_lock_irq(&adapter->work_lock); 2663 link_fault = p->link_fault; 2664 spin_unlock_irq(&adapter->work_lock); 2665 2666 if (link_fault) { 2667 t3_link_fault(adapter, i); 2668 continue; 2669 } 2670 2671 if (!(p->phy.caps & SUPPORTED_IRQ) && netif_running(dev)) { 2672 t3_xgm_intr_disable(adapter, i); 2673 t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset); 2674 2675 t3_link_changed(adapter, i); 2676 t3_xgm_intr_enable(adapter, i); 2677 } 2678 } 2679 } 2680 2681 static void check_t3b2_mac(struct adapter *adapter) 2682 { 2683 int i; 2684 2685 if (!rtnl_trylock()) /* synchronize with ifdown */ 2686 return; 2687 2688 for_each_port(adapter, i) { 2689 struct net_device *dev = adapter->port[i]; 2690 struct port_info *p = netdev_priv(dev); 2691 int status; 2692 2693 if (!netif_running(dev)) 2694 continue; 2695 2696 status = 0; 2697 if (netif_running(dev) && netif_carrier_ok(dev)) 2698 status = t3b2_mac_watchdog_task(&p->mac); 2699 if (status == 1) 2700 p->mac.stats.num_toggled++; 2701 else if (status == 2) { 2702 struct cmac *mac = &p->mac; 2703 2704 t3_mac_set_mtu(mac, dev->mtu); 2705 t3_mac_set_address(mac, LAN_MAC_IDX, dev->dev_addr); 2706 cxgb_set_rxmode(dev); 2707 t3_link_start(&p->phy, mac, &p->link_config); 2708 t3_mac_enable(mac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); 2709 t3_port_intr_enable(adapter, p->port_id); 2710 p->mac.stats.num_resets++; 2711 } 2712 } 2713 rtnl_unlock(); 2714 } 2715 2716 2717 static void t3_adap_check_task(struct work_struct *work) 2718 { 2719 struct adapter *adapter = container_of(work, struct adapter, 2720 adap_check_task.work); 2721 const struct adapter_params *p = &adapter->params; 2722 int port; 2723 unsigned int v, status, reset; 2724 2725 adapter->check_task_cnt++; 2726 2727 check_link_status(adapter); 2728 2729 /* Accumulate MAC stats if needed */ 2730 if (!p->linkpoll_period || 2731 (adapter->check_task_cnt * p->linkpoll_period) / 10 >= 2732 p->stats_update_period) { 2733 mac_stats_update(adapter); 2734 adapter->check_task_cnt = 0; 2735 } 2736 2737 if (p->rev == T3_REV_B2) 2738 check_t3b2_mac(adapter); 2739 2740 /* 2741 * Scan the XGMAC's to check for various conditions which we want to 2742 * monitor in a periodic polling manner rather than via an interrupt 2743 * condition. This is used for conditions which would otherwise flood 2744 * the system with interrupts and we only really need to know that the 2745 * conditions are "happening" ... For each condition we count the 2746 * detection of the condition and reset it for the next polling loop. 2747 */ 2748 for_each_port(adapter, port) { 2749 struct cmac *mac = &adap2pinfo(adapter, port)->mac; 2750 u32 cause; 2751 2752 cause = t3_read_reg(adapter, A_XGM_INT_CAUSE + mac->offset); 2753 reset = 0; 2754 if (cause & F_RXFIFO_OVERFLOW) { 2755 mac->stats.rx_fifo_ovfl++; 2756 reset |= F_RXFIFO_OVERFLOW; 2757 } 2758 2759 t3_write_reg(adapter, A_XGM_INT_CAUSE + mac->offset, reset); 2760 } 2761 2762 /* 2763 * We do the same as above for FL_EMPTY interrupts. 2764 */ 2765 status = t3_read_reg(adapter, A_SG_INT_CAUSE); 2766 reset = 0; 2767 2768 if (status & F_FLEMPTY) { 2769 struct sge_qset *qs = &adapter->sge.qs[0]; 2770 int i = 0; 2771 2772 reset |= F_FLEMPTY; 2773 2774 v = (t3_read_reg(adapter, A_SG_RSPQ_FL_STATUS) >> S_FL0EMPTY) & 2775 0xffff; 2776 2777 while (v) { 2778 qs->fl[i].empty += (v & 1); 2779 if (i) 2780 qs++; 2781 i ^= 1; 2782 v >>= 1; 2783 } 2784 } 2785 2786 t3_write_reg(adapter, A_SG_INT_CAUSE, reset); 2787 2788 /* Schedule the next check update if any port is active. */ 2789 spin_lock_irq(&adapter->work_lock); 2790 if (adapter->open_device_map & PORT_MASK) 2791 schedule_chk_task(adapter); 2792 spin_unlock_irq(&adapter->work_lock); 2793 } 2794 2795 static void db_full_task(struct work_struct *work) 2796 { 2797 struct adapter *adapter = container_of(work, struct adapter, 2798 db_full_task); 2799 2800 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_FULL, 0); 2801 } 2802 2803 static void db_empty_task(struct work_struct *work) 2804 { 2805 struct adapter *adapter = container_of(work, struct adapter, 2806 db_empty_task); 2807 2808 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_EMPTY, 0); 2809 } 2810 2811 static void db_drop_task(struct work_struct *work) 2812 { 2813 struct adapter *adapter = container_of(work, struct adapter, 2814 db_drop_task); 2815 unsigned long delay = 1000; 2816 unsigned short r; 2817 2818 cxgb3_event_notify(&adapter->tdev, OFFLOAD_DB_DROP, 0); 2819 2820 /* 2821 * Sleep a while before ringing the driver qset dbs. 2822 * The delay is between 1000-2023 usecs. 2823 */ 2824 get_random_bytes(&r, 2); 2825 delay += r & 1023; 2826 set_current_state(TASK_UNINTERRUPTIBLE); 2827 schedule_timeout(usecs_to_jiffies(delay)); 2828 ring_dbs(adapter); 2829 } 2830 2831 /* 2832 * Processes external (PHY) interrupts in process context. 2833 */ 2834 static void ext_intr_task(struct work_struct *work) 2835 { 2836 struct adapter *adapter = container_of(work, struct adapter, 2837 ext_intr_handler_task); 2838 int i; 2839 2840 /* Disable link fault interrupts */ 2841 for_each_port(adapter, i) { 2842 struct net_device *dev = adapter->port[i]; 2843 struct port_info *p = netdev_priv(dev); 2844 2845 t3_xgm_intr_disable(adapter, i); 2846 t3_read_reg(adapter, A_XGM_INT_STATUS + p->mac.offset); 2847 } 2848 2849 /* Re-enable link fault interrupts */ 2850 t3_phy_intr_handler(adapter); 2851 2852 for_each_port(adapter, i) 2853 t3_xgm_intr_enable(adapter, i); 2854 2855 /* Now reenable external interrupts */ 2856 spin_lock_irq(&adapter->work_lock); 2857 if (adapter->slow_intr_mask) { 2858 adapter->slow_intr_mask |= F_T3DBG; 2859 t3_write_reg(adapter, A_PL_INT_CAUSE0, F_T3DBG); 2860 t3_write_reg(adapter, A_PL_INT_ENABLE0, 2861 adapter->slow_intr_mask); 2862 } 2863 spin_unlock_irq(&adapter->work_lock); 2864 } 2865 2866 /* 2867 * Interrupt-context handler for external (PHY) interrupts. 2868 */ 2869 void t3_os_ext_intr_handler(struct adapter *adapter) 2870 { 2871 /* 2872 * Schedule a task to handle external interrupts as they may be slow 2873 * and we use a mutex to protect MDIO registers. We disable PHY 2874 * interrupts in the meantime and let the task reenable them when 2875 * it's done. 2876 */ 2877 spin_lock(&adapter->work_lock); 2878 if (adapter->slow_intr_mask) { 2879 adapter->slow_intr_mask &= ~F_T3DBG; 2880 t3_write_reg(adapter, A_PL_INT_ENABLE0, 2881 adapter->slow_intr_mask); 2882 queue_work(cxgb3_wq, &adapter->ext_intr_handler_task); 2883 } 2884 spin_unlock(&adapter->work_lock); 2885 } 2886 2887 void t3_os_link_fault_handler(struct adapter *adapter, int port_id) 2888 { 2889 struct net_device *netdev = adapter->port[port_id]; 2890 struct port_info *pi = netdev_priv(netdev); 2891 2892 spin_lock(&adapter->work_lock); 2893 pi->link_fault = 1; 2894 spin_unlock(&adapter->work_lock); 2895 } 2896 2897 static int t3_adapter_error(struct adapter *adapter, int reset, int on_wq) 2898 { 2899 int i, ret = 0; 2900 2901 if (is_offload(adapter) && 2902 test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map)) { 2903 cxgb3_event_notify(&adapter->tdev, OFFLOAD_STATUS_DOWN, 0); 2904 offload_close(&adapter->tdev); 2905 } 2906 2907 /* Stop all ports */ 2908 for_each_port(adapter, i) { 2909 struct net_device *netdev = adapter->port[i]; 2910 2911 if (netif_running(netdev)) 2912 __cxgb_close(netdev, on_wq); 2913 } 2914 2915 /* Stop SGE timers */ 2916 t3_stop_sge_timers(adapter); 2917 2918 adapter->flags &= ~FULL_INIT_DONE; 2919 2920 if (reset) 2921 ret = t3_reset_adapter(adapter); 2922 2923 pci_disable_device(adapter->pdev); 2924 2925 return ret; 2926 } 2927 2928 static int t3_reenable_adapter(struct adapter *adapter) 2929 { 2930 if (pci_enable_device(adapter->pdev)) { 2931 dev_err(&adapter->pdev->dev, 2932 "Cannot re-enable PCI device after reset.\n"); 2933 goto err; 2934 } 2935 pci_set_master(adapter->pdev); 2936 pci_restore_state(adapter->pdev); 2937 pci_save_state(adapter->pdev); 2938 2939 /* Free sge resources */ 2940 t3_free_sge_resources(adapter); 2941 2942 if (t3_replay_prep_adapter(adapter)) 2943 goto err; 2944 2945 return 0; 2946 err: 2947 return -1; 2948 } 2949 2950 static void t3_resume_ports(struct adapter *adapter) 2951 { 2952 int i; 2953 2954 /* Restart the ports */ 2955 for_each_port(adapter, i) { 2956 struct net_device *netdev = adapter->port[i]; 2957 2958 if (netif_running(netdev)) { 2959 if (cxgb_open(netdev)) { 2960 dev_err(&adapter->pdev->dev, 2961 "can't bring device back up" 2962 " after reset\n"); 2963 continue; 2964 } 2965 } 2966 } 2967 2968 if (is_offload(adapter) && !ofld_disable) 2969 cxgb3_event_notify(&adapter->tdev, OFFLOAD_STATUS_UP, 0); 2970 } 2971 2972 /* 2973 * processes a fatal error. 2974 * Bring the ports down, reset the chip, bring the ports back up. 2975 */ 2976 static void fatal_error_task(struct work_struct *work) 2977 { 2978 struct adapter *adapter = container_of(work, struct adapter, 2979 fatal_error_handler_task); 2980 int err = 0; 2981 2982 rtnl_lock(); 2983 err = t3_adapter_error(adapter, 1, 1); 2984 if (!err) 2985 err = t3_reenable_adapter(adapter); 2986 if (!err) 2987 t3_resume_ports(adapter); 2988 2989 CH_ALERT(adapter, "adapter reset %s\n", err ? "failed" : "succeeded"); 2990 rtnl_unlock(); 2991 } 2992 2993 void t3_fatal_err(struct adapter *adapter) 2994 { 2995 unsigned int fw_status[4]; 2996 2997 if (adapter->flags & FULL_INIT_DONE) { 2998 t3_sge_stop(adapter); 2999 t3_write_reg(adapter, A_XGM_TX_CTRL, 0); 3000 t3_write_reg(adapter, A_XGM_RX_CTRL, 0); 3001 t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0); 3002 t3_write_reg(adapter, XGM_REG(A_XGM_RX_CTRL, 1), 0); 3003 3004 spin_lock(&adapter->work_lock); 3005 t3_intr_disable(adapter); 3006 queue_work(cxgb3_wq, &adapter->fatal_error_handler_task); 3007 spin_unlock(&adapter->work_lock); 3008 } 3009 CH_ALERT(adapter, "encountered fatal error, operation suspended\n"); 3010 if (!t3_cim_ctl_blk_read(adapter, 0xa0, 4, fw_status)) 3011 CH_ALERT(adapter, "FW status: 0x%x, 0x%x, 0x%x, 0x%x\n", 3012 fw_status[0], fw_status[1], 3013 fw_status[2], fw_status[3]); 3014 } 3015 3016 /** 3017 * t3_io_error_detected - called when PCI error is detected 3018 * @pdev: Pointer to PCI device 3019 * @state: The current pci connection state 3020 * 3021 * This function is called after a PCI bus error affecting 3022 * this device has been detected. 3023 */ 3024 static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev, 3025 pci_channel_state_t state) 3026 { 3027 struct adapter *adapter = pci_get_drvdata(pdev); 3028 3029 if (state == pci_channel_io_perm_failure) 3030 return PCI_ERS_RESULT_DISCONNECT; 3031 3032 t3_adapter_error(adapter, 0, 0); 3033 3034 /* Request a slot reset. */ 3035 return PCI_ERS_RESULT_NEED_RESET; 3036 } 3037 3038 /** 3039 * t3_io_slot_reset - called after the pci bus has been reset. 3040 * @pdev: Pointer to PCI device 3041 * 3042 * Restart the card from scratch, as if from a cold-boot. 3043 */ 3044 static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev) 3045 { 3046 struct adapter *adapter = pci_get_drvdata(pdev); 3047 3048 if (!t3_reenable_adapter(adapter)) 3049 return PCI_ERS_RESULT_RECOVERED; 3050 3051 return PCI_ERS_RESULT_DISCONNECT; 3052 } 3053 3054 /** 3055 * t3_io_resume - called when traffic can start flowing again. 3056 * @pdev: Pointer to PCI device 3057 * 3058 * This callback is called when the error recovery driver tells us that 3059 * its OK to resume normal operation. 3060 */ 3061 static void t3_io_resume(struct pci_dev *pdev) 3062 { 3063 struct adapter *adapter = pci_get_drvdata(pdev); 3064 3065 CH_ALERT(adapter, "adapter recovering, PEX ERR 0x%x\n", 3066 t3_read_reg(adapter, A_PCIE_PEX_ERR)); 3067 3068 rtnl_lock(); 3069 t3_resume_ports(adapter); 3070 rtnl_unlock(); 3071 } 3072 3073 static const struct pci_error_handlers t3_err_handler = { 3074 .error_detected = t3_io_error_detected, 3075 .slot_reset = t3_io_slot_reset, 3076 .resume = t3_io_resume, 3077 }; 3078 3079 /* 3080 * Set the number of qsets based on the number of CPUs and the number of ports, 3081 * not to exceed the number of available qsets, assuming there are enough qsets 3082 * per port in HW. 3083 */ 3084 static void set_nqsets(struct adapter *adap) 3085 { 3086 int i, j = 0; 3087 int num_cpus = netif_get_num_default_rss_queues(); 3088 int hwports = adap->params.nports; 3089 int nqsets = adap->msix_nvectors - 1; 3090 3091 if (adap->params.rev > 0 && adap->flags & USING_MSIX) { 3092 if (hwports == 2 && 3093 (hwports * nqsets > SGE_QSETS || 3094 num_cpus >= nqsets / hwports)) 3095 nqsets /= hwports; 3096 if (nqsets > num_cpus) 3097 nqsets = num_cpus; 3098 if (nqsets < 1 || hwports == 4) 3099 nqsets = 1; 3100 } else 3101 nqsets = 1; 3102 3103 for_each_port(adap, i) { 3104 struct port_info *pi = adap2pinfo(adap, i); 3105 3106 pi->first_qset = j; 3107 pi->nqsets = nqsets; 3108 j = pi->first_qset + nqsets; 3109 3110 dev_info(&adap->pdev->dev, 3111 "Port %d using %d queue sets.\n", i, nqsets); 3112 } 3113 } 3114 3115 static int cxgb_enable_msix(struct adapter *adap) 3116 { 3117 struct msix_entry entries[SGE_QSETS + 1]; 3118 int vectors; 3119 int i; 3120 3121 vectors = ARRAY_SIZE(entries); 3122 for (i = 0; i < vectors; ++i) 3123 entries[i].entry = i; 3124 3125 vectors = pci_enable_msix_range(adap->pdev, entries, 3126 adap->params.nports + 1, vectors); 3127 if (vectors < 0) 3128 return vectors; 3129 3130 for (i = 0; i < vectors; ++i) 3131 adap->msix_info[i].vec = entries[i].vector; 3132 adap->msix_nvectors = vectors; 3133 3134 return 0; 3135 } 3136 3137 static void print_port_info(struct adapter *adap, const struct adapter_info *ai) 3138 { 3139 static const char *pci_variant[] = { 3140 "PCI", "PCI-X", "PCI-X ECC", "PCI-X 266", "PCI Express" 3141 }; 3142 3143 int i; 3144 char buf[80]; 3145 3146 if (is_pcie(adap)) 3147 snprintf(buf, sizeof(buf), "%s x%d", 3148 pci_variant[adap->params.pci.variant], 3149 adap->params.pci.width); 3150 else 3151 snprintf(buf, sizeof(buf), "%s %dMHz/%d-bit", 3152 pci_variant[adap->params.pci.variant], 3153 adap->params.pci.speed, adap->params.pci.width); 3154 3155 for_each_port(adap, i) { 3156 struct net_device *dev = adap->port[i]; 3157 const struct port_info *pi = netdev_priv(dev); 3158 3159 if (!test_bit(i, &adap->registered_device_map)) 3160 continue; 3161 netdev_info(dev, "%s %s %sNIC (rev %d) %s%s\n", 3162 ai->desc, pi->phy.desc, 3163 is_offload(adap) ? "R" : "", adap->params.rev, buf, 3164 (adap->flags & USING_MSIX) ? " MSI-X" : 3165 (adap->flags & USING_MSI) ? " MSI" : ""); 3166 if (adap->name == dev->name && adap->params.vpd.mclk) 3167 pr_info("%s: %uMB CM, %uMB PMTX, %uMB PMRX, S/N: %s\n", 3168 adap->name, t3_mc7_size(&adap->cm) >> 20, 3169 t3_mc7_size(&adap->pmtx) >> 20, 3170 t3_mc7_size(&adap->pmrx) >> 20, 3171 adap->params.vpd.sn); 3172 } 3173 } 3174 3175 static const struct net_device_ops cxgb_netdev_ops = { 3176 .ndo_open = cxgb_open, 3177 .ndo_stop = cxgb_close, 3178 .ndo_start_xmit = t3_eth_xmit, 3179 .ndo_get_stats = cxgb_get_stats, 3180 .ndo_validate_addr = eth_validate_addr, 3181 .ndo_set_rx_mode = cxgb_set_rxmode, 3182 .ndo_do_ioctl = cxgb_ioctl, 3183 .ndo_change_mtu = cxgb_change_mtu, 3184 .ndo_set_mac_address = cxgb_set_mac_addr, 3185 .ndo_fix_features = cxgb_fix_features, 3186 .ndo_set_features = cxgb_set_features, 3187 #ifdef CONFIG_NET_POLL_CONTROLLER 3188 .ndo_poll_controller = cxgb_netpoll, 3189 #endif 3190 }; 3191 3192 static void cxgb3_init_iscsi_mac(struct net_device *dev) 3193 { 3194 struct port_info *pi = netdev_priv(dev); 3195 3196 memcpy(pi->iscsic.mac_addr, dev->dev_addr, ETH_ALEN); 3197 pi->iscsic.mac_addr[3] |= 0x80; 3198 } 3199 3200 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN) 3201 #define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \ 3202 NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA) 3203 static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 3204 { 3205 int i, err, pci_using_dac = 0; 3206 resource_size_t mmio_start, mmio_len; 3207 const struct adapter_info *ai; 3208 struct adapter *adapter = NULL; 3209 struct port_info *pi; 3210 3211 pr_info_once("%s - version %s\n", DRV_DESC, DRV_VERSION); 3212 3213 if (!cxgb3_wq) { 3214 cxgb3_wq = create_singlethread_workqueue(DRV_NAME); 3215 if (!cxgb3_wq) { 3216 pr_err("cannot initialize work queue\n"); 3217 return -ENOMEM; 3218 } 3219 } 3220 3221 err = pci_enable_device(pdev); 3222 if (err) { 3223 dev_err(&pdev->dev, "cannot enable PCI device\n"); 3224 goto out; 3225 } 3226 3227 err = pci_request_regions(pdev, DRV_NAME); 3228 if (err) { 3229 /* Just info, some other driver may have claimed the device. */ 3230 dev_info(&pdev->dev, "cannot obtain PCI resources\n"); 3231 goto out_disable_device; 3232 } 3233 3234 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { 3235 pci_using_dac = 1; 3236 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 3237 if (err) { 3238 dev_err(&pdev->dev, "unable to obtain 64-bit DMA for " 3239 "coherent allocations\n"); 3240 goto out_release_regions; 3241 } 3242 } else if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) != 0) { 3243 dev_err(&pdev->dev, "no usable DMA configuration\n"); 3244 goto out_release_regions; 3245 } 3246 3247 pci_set_master(pdev); 3248 pci_save_state(pdev); 3249 3250 mmio_start = pci_resource_start(pdev, 0); 3251 mmio_len = pci_resource_len(pdev, 0); 3252 ai = t3_get_adapter_info(ent->driver_data); 3253 3254 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); 3255 if (!adapter) { 3256 err = -ENOMEM; 3257 goto out_release_regions; 3258 } 3259 3260 adapter->nofail_skb = 3261 alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_KERNEL); 3262 if (!adapter->nofail_skb) { 3263 dev_err(&pdev->dev, "cannot allocate nofail buffer\n"); 3264 err = -ENOMEM; 3265 goto out_free_adapter; 3266 } 3267 3268 adapter->regs = ioremap_nocache(mmio_start, mmio_len); 3269 if (!adapter->regs) { 3270 dev_err(&pdev->dev, "cannot map device registers\n"); 3271 err = -ENOMEM; 3272 goto out_free_adapter_nofail; 3273 } 3274 3275 adapter->pdev = pdev; 3276 adapter->name = pci_name(pdev); 3277 adapter->msg_enable = dflt_msg_enable; 3278 adapter->mmio_len = mmio_len; 3279 3280 mutex_init(&adapter->mdio_lock); 3281 spin_lock_init(&adapter->work_lock); 3282 spin_lock_init(&adapter->stats_lock); 3283 3284 INIT_LIST_HEAD(&adapter->adapter_list); 3285 INIT_WORK(&adapter->ext_intr_handler_task, ext_intr_task); 3286 INIT_WORK(&adapter->fatal_error_handler_task, fatal_error_task); 3287 3288 INIT_WORK(&adapter->db_full_task, db_full_task); 3289 INIT_WORK(&adapter->db_empty_task, db_empty_task); 3290 INIT_WORK(&adapter->db_drop_task, db_drop_task); 3291 3292 INIT_DELAYED_WORK(&adapter->adap_check_task, t3_adap_check_task); 3293 3294 for (i = 0; i < ai->nports0 + ai->nports1; ++i) { 3295 struct net_device *netdev; 3296 3297 netdev = alloc_etherdev_mq(sizeof(struct port_info), SGE_QSETS); 3298 if (!netdev) { 3299 err = -ENOMEM; 3300 goto out_free_dev; 3301 } 3302 3303 SET_NETDEV_DEV(netdev, &pdev->dev); 3304 3305 adapter->port[i] = netdev; 3306 pi = netdev_priv(netdev); 3307 pi->adapter = adapter; 3308 pi->port_id = i; 3309 netif_carrier_off(netdev); 3310 netdev->irq = pdev->irq; 3311 netdev->mem_start = mmio_start; 3312 netdev->mem_end = mmio_start + mmio_len - 1; 3313 netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | 3314 NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX; 3315 netdev->features |= netdev->hw_features | 3316 NETIF_F_HW_VLAN_CTAG_TX; 3317 netdev->vlan_features |= netdev->features & VLAN_FEAT; 3318 if (pci_using_dac) 3319 netdev->features |= NETIF_F_HIGHDMA; 3320 3321 netdev->netdev_ops = &cxgb_netdev_ops; 3322 netdev->ethtool_ops = &cxgb_ethtool_ops; 3323 netdev->min_mtu = 81; 3324 netdev->max_mtu = ETH_MAX_MTU; 3325 netdev->dev_port = pi->port_id; 3326 } 3327 3328 pci_set_drvdata(pdev, adapter); 3329 if (t3_prep_adapter(adapter, ai, 1) < 0) { 3330 err = -ENODEV; 3331 goto out_free_dev; 3332 } 3333 3334 /* 3335 * The card is now ready to go. If any errors occur during device 3336 * registration we do not fail the whole card but rather proceed only 3337 * with the ports we manage to register successfully. However we must 3338 * register at least one net device. 3339 */ 3340 for_each_port(adapter, i) { 3341 err = register_netdev(adapter->port[i]); 3342 if (err) 3343 dev_warn(&pdev->dev, 3344 "cannot register net device %s, skipping\n", 3345 adapter->port[i]->name); 3346 else { 3347 /* 3348 * Change the name we use for messages to the name of 3349 * the first successfully registered interface. 3350 */ 3351 if (!adapter->registered_device_map) 3352 adapter->name = adapter->port[i]->name; 3353 3354 __set_bit(i, &adapter->registered_device_map); 3355 } 3356 } 3357 if (!adapter->registered_device_map) { 3358 dev_err(&pdev->dev, "could not register any net devices\n"); 3359 goto out_free_dev; 3360 } 3361 3362 for_each_port(adapter, i) 3363 cxgb3_init_iscsi_mac(adapter->port[i]); 3364 3365 /* Driver's ready. Reflect it on LEDs */ 3366 t3_led_ready(adapter); 3367 3368 if (is_offload(adapter)) { 3369 __set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map); 3370 cxgb3_adapter_ofld(adapter); 3371 } 3372 3373 /* See what interrupts we'll be using */ 3374 if (msi > 1 && cxgb_enable_msix(adapter) == 0) 3375 adapter->flags |= USING_MSIX; 3376 else if (msi > 0 && pci_enable_msi(pdev) == 0) 3377 adapter->flags |= USING_MSI; 3378 3379 set_nqsets(adapter); 3380 3381 err = sysfs_create_group(&adapter->port[0]->dev.kobj, 3382 &cxgb3_attr_group); 3383 if (err) { 3384 dev_err(&pdev->dev, "cannot create sysfs group\n"); 3385 goto out_close_led; 3386 } 3387 3388 print_port_info(adapter, ai); 3389 return 0; 3390 3391 out_close_led: 3392 t3_set_reg_field(adapter, A_T3DBG_GPIO_EN, F_GPIO0_OUT_VAL, 0); 3393 3394 out_free_dev: 3395 iounmap(adapter->regs); 3396 for (i = ai->nports0 + ai->nports1 - 1; i >= 0; --i) 3397 if (adapter->port[i]) 3398 free_netdev(adapter->port[i]); 3399 3400 out_free_adapter_nofail: 3401 kfree_skb(adapter->nofail_skb); 3402 3403 out_free_adapter: 3404 kfree(adapter); 3405 3406 out_release_regions: 3407 pci_release_regions(pdev); 3408 out_disable_device: 3409 pci_disable_device(pdev); 3410 out: 3411 return err; 3412 } 3413 3414 static void remove_one(struct pci_dev *pdev) 3415 { 3416 struct adapter *adapter = pci_get_drvdata(pdev); 3417 3418 if (adapter) { 3419 int i; 3420 3421 t3_sge_stop(adapter); 3422 sysfs_remove_group(&adapter->port[0]->dev.kobj, 3423 &cxgb3_attr_group); 3424 3425 if (is_offload(adapter)) { 3426 cxgb3_adapter_unofld(adapter); 3427 if (test_bit(OFFLOAD_DEVMAP_BIT, 3428 &adapter->open_device_map)) 3429 offload_close(&adapter->tdev); 3430 } 3431 3432 for_each_port(adapter, i) 3433 if (test_bit(i, &adapter->registered_device_map)) 3434 unregister_netdev(adapter->port[i]); 3435 3436 t3_stop_sge_timers(adapter); 3437 t3_free_sge_resources(adapter); 3438 cxgb_disable_msi(adapter); 3439 3440 for_each_port(adapter, i) 3441 if (adapter->port[i]) 3442 free_netdev(adapter->port[i]); 3443 3444 iounmap(adapter->regs); 3445 kfree_skb(adapter->nofail_skb); 3446 kfree(adapter); 3447 pci_release_regions(pdev); 3448 pci_disable_device(pdev); 3449 } 3450 } 3451 3452 static struct pci_driver driver = { 3453 .name = DRV_NAME, 3454 .id_table = cxgb3_pci_tbl, 3455 .probe = init_one, 3456 .remove = remove_one, 3457 .err_handler = &t3_err_handler, 3458 }; 3459 3460 static int __init cxgb3_init_module(void) 3461 { 3462 int ret; 3463 3464 cxgb3_offload_init(); 3465 3466 ret = pci_register_driver(&driver); 3467 return ret; 3468 } 3469 3470 static void __exit cxgb3_cleanup_module(void) 3471 { 3472 pci_unregister_driver(&driver); 3473 if (cxgb3_wq) 3474 destroy_workqueue(cxgb3_wq); 3475 } 3476 3477 module_init(cxgb3_init_module); 3478 module_exit(cxgb3_cleanup_module); 3479