1 /* 2 * linux/drivers/message/fusion/mptlan.c 3 * IP Over Fibre Channel device driver. 4 * For use with LSI Fibre Channel PCI chip/adapters 5 * running LSI Fusion MPT (Message Passing Technology) firmware. 6 * 7 * Copyright (c) 2000-2008 LSI Corporation 8 * (mailto:DL-MPTFusionLinux@lsi.com) 9 * 10 */ 11 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 12 /* 13 This program is free software; you can redistribute it and/or modify 14 it under the terms of the GNU General Public License as published by 15 the Free Software Foundation; version 2 of the License. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 NO WARRANTY 23 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 24 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 25 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 26 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 27 solely responsible for determining the appropriateness of using and 28 distributing the Program and assumes all risks associated with its 29 exercise of rights under this Agreement, including but not limited to 30 the risks and costs of program errors, damage to or loss of data, 31 programs or equipment, and unavailability or interruption of operations. 32 33 DISCLAIMER OF LIABILITY 34 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 35 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 37 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 38 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 39 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 40 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 41 42 You should have received a copy of the GNU General Public License 43 along with this program; if not, write to the Free Software 44 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 45 */ 46 47 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 48 /* 49 * Define statements used for debugging 50 */ 51 //#define MPT_LAN_IO_DEBUG 52 53 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 54 55 #include "mptlan.h" 56 #include <linux/init.h> 57 #include <linux/module.h> 58 #include <linux/fs.h> 59 #include <linux/sched.h> 60 #include <linux/slab.h> 61 62 #define my_VERSION MPT_LINUX_VERSION_COMMON 63 #define MYNAM "mptlan" 64 65 MODULE_LICENSE("GPL"); 66 MODULE_VERSION(my_VERSION); 67 68 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 69 /* 70 * MPT LAN message sizes without variable part. 71 */ 72 #define MPT_LAN_RECEIVE_POST_REQUEST_SIZE \ 73 (sizeof(LANReceivePostRequest_t) - sizeof(SGE_MPI_UNION)) 74 75 /* 76 * Fusion MPT LAN private structures 77 */ 78 79 struct BufferControl { 80 struct sk_buff *skb; 81 dma_addr_t dma; 82 unsigned int len; 83 }; 84 85 struct mpt_lan_priv { 86 MPT_ADAPTER *mpt_dev; 87 u8 pnum; /* Port number in the IOC. This is not a Unix network port! */ 88 89 atomic_t buckets_out; /* number of unused buckets on IOC */ 90 int bucketthresh; /* Send more when this many left */ 91 92 int *mpt_txfidx; /* Free Tx Context list */ 93 int mpt_txfidx_tail; 94 spinlock_t txfidx_lock; 95 96 int *mpt_rxfidx; /* Free Rx Context list */ 97 int mpt_rxfidx_tail; 98 spinlock_t rxfidx_lock; 99 100 struct BufferControl *RcvCtl; /* Receive BufferControl structs */ 101 struct BufferControl *SendCtl; /* Send BufferControl structs */ 102 103 int max_buckets_out; /* Max buckets to send to IOC */ 104 int tx_max_out; /* IOC's Tx queue len */ 105 106 u32 total_posted; 107 u32 total_received; 108 109 struct delayed_work post_buckets_task; 110 struct net_device *dev; 111 unsigned long post_buckets_active; 112 }; 113 114 struct mpt_lan_ohdr { 115 u16 dtype; 116 u8 daddr[FC_ALEN]; 117 u16 stype; 118 u8 saddr[FC_ALEN]; 119 }; 120 121 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 122 123 /* 124 * Forward protos... 125 */ 126 static int lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, 127 MPT_FRAME_HDR *reply); 128 static int mpt_lan_open(struct net_device *dev); 129 static int mpt_lan_reset(struct net_device *dev); 130 static int mpt_lan_close(struct net_device *dev); 131 static void mpt_lan_post_receive_buckets(struct mpt_lan_priv *priv); 132 static void mpt_lan_wake_post_buckets_task(struct net_device *dev, 133 int priority); 134 static int mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg); 135 static int mpt_lan_receive_post_reply(struct net_device *dev, 136 LANReceivePostReply_t *pRecvRep); 137 static int mpt_lan_send_turbo(struct net_device *dev, u32 tmsg); 138 static int mpt_lan_send_reply(struct net_device *dev, 139 LANSendReply_t *pSendRep); 140 static int mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase); 141 static int mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply); 142 static unsigned short mpt_lan_type_trans(struct sk_buff *skb, 143 struct net_device *dev); 144 145 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 146 /* 147 * Fusion MPT LAN private data 148 */ 149 static u8 LanCtx = MPT_MAX_PROTOCOL_DRIVERS; 150 151 static u32 max_buckets_out = 127; 152 static u32 tx_max_out_p = 127 - 16; 153 154 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 155 /** 156 * lan_reply - Handle all data sent from the hardware. 157 * @ioc: Pointer to MPT_ADAPTER structure 158 * @mf: Pointer to original MPT request frame (NULL if TurboReply) 159 * @reply: Pointer to MPT reply frame 160 * 161 * Returns 1 indicating original alloc'd request frame ptr 162 * should be freed, or 0 if it shouldn't. 163 */ 164 static int 165 lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *reply) 166 { 167 struct net_device *dev = ioc->netdev; 168 int FreeReqFrame = 0; 169 170 dioprintk((KERN_INFO MYNAM ": %s/%s: Got reply.\n", 171 IOC_AND_NETDEV_NAMES_s_s(dev))); 172 173 // dioprintk((KERN_INFO MYNAM "@lan_reply: mf = %p, reply = %p\n", 174 // mf, reply)); 175 176 if (mf == NULL) { 177 u32 tmsg = CAST_PTR_TO_U32(reply); 178 179 dioprintk((KERN_INFO MYNAM ": %s/%s: @lan_reply, tmsg %08x\n", 180 IOC_AND_NETDEV_NAMES_s_s(dev), 181 tmsg)); 182 183 switch (GET_LAN_FORM(tmsg)) { 184 185 // NOTE! (Optimization) First case here is now caught in 186 // mptbase.c::mpt_interrupt() routine and callcack here 187 // is now skipped for this case! 188 #if 0 189 case LAN_REPLY_FORM_MESSAGE_CONTEXT: 190 // dioprintk((KERN_INFO MYNAM "/lan_reply: " 191 // "MessageContext turbo reply received\n")); 192 FreeReqFrame = 1; 193 break; 194 #endif 195 196 case LAN_REPLY_FORM_SEND_SINGLE: 197 // dioprintk((MYNAM "/lan_reply: " 198 // "calling mpt_lan_send_reply (turbo)\n")); 199 200 // Potential BUG here? 201 // FreeReqFrame = mpt_lan_send_turbo(dev, tmsg); 202 // If/when mpt_lan_send_turbo would return 1 here, 203 // calling routine (mptbase.c|mpt_interrupt) 204 // would Oops because mf has already been set 205 // to NULL. So after return from this func, 206 // mpt_interrupt() will attempt to put (NULL) mf ptr 207 // item back onto its adapter FreeQ - Oops!:-( 208 // It's Ok, since mpt_lan_send_turbo() *currently* 209 // always returns 0, but..., just in case: 210 211 (void) mpt_lan_send_turbo(dev, tmsg); 212 FreeReqFrame = 0; 213 214 break; 215 216 case LAN_REPLY_FORM_RECEIVE_SINGLE: 217 // dioprintk((KERN_INFO MYNAM "@lan_reply: " 218 // "rcv-Turbo = %08x\n", tmsg)); 219 mpt_lan_receive_post_turbo(dev, tmsg); 220 break; 221 222 default: 223 printk (KERN_ERR MYNAM "/lan_reply: Got a turbo reply " 224 "that I don't know what to do with\n"); 225 226 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 227 228 break; 229 } 230 231 return FreeReqFrame; 232 } 233 234 // msg = (u32 *) reply; 235 // dioprintk((KERN_INFO MYNAM "@lan_reply: msg = %08x %08x %08x %08x\n", 236 // le32_to_cpu(msg[0]), le32_to_cpu(msg[1]), 237 // le32_to_cpu(msg[2]), le32_to_cpu(msg[3]))); 238 // dioprintk((KERN_INFO MYNAM "@lan_reply: Function = %02xh\n", 239 // reply->u.hdr.Function)); 240 241 switch (reply->u.hdr.Function) { 242 243 case MPI_FUNCTION_LAN_SEND: 244 { 245 LANSendReply_t *pSendRep; 246 247 pSendRep = (LANSendReply_t *) reply; 248 FreeReqFrame = mpt_lan_send_reply(dev, pSendRep); 249 break; 250 } 251 252 case MPI_FUNCTION_LAN_RECEIVE: 253 { 254 LANReceivePostReply_t *pRecvRep; 255 256 pRecvRep = (LANReceivePostReply_t *) reply; 257 if (pRecvRep->NumberOfContexts) { 258 mpt_lan_receive_post_reply(dev, pRecvRep); 259 if (!(pRecvRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 260 FreeReqFrame = 1; 261 } else 262 dioprintk((KERN_INFO MYNAM "@lan_reply: zero context " 263 "ReceivePostReply received.\n")); 264 break; 265 } 266 267 case MPI_FUNCTION_LAN_RESET: 268 /* Just a default reply. Might want to check it to 269 * make sure that everything went ok. 270 */ 271 FreeReqFrame = 1; 272 break; 273 274 case MPI_FUNCTION_EVENT_NOTIFICATION: 275 case MPI_FUNCTION_EVENT_ACK: 276 /* _EVENT_NOTIFICATION should NOT come down this path any more. 277 * Should be routed to mpt_lan_event_process(), but just in case... 278 */ 279 FreeReqFrame = 1; 280 break; 281 282 default: 283 printk (KERN_ERR MYNAM "/lan_reply: Got a non-turbo " 284 "reply that I don't know what to do with\n"); 285 286 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 287 FreeReqFrame = 1; 288 289 break; 290 } 291 292 return FreeReqFrame; 293 } 294 295 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 296 static int 297 mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) 298 { 299 struct net_device *dev = ioc->netdev; 300 struct mpt_lan_priv *priv; 301 302 if (dev == NULL) 303 return(1); 304 else 305 priv = netdev_priv(dev); 306 307 dlprintk((KERN_INFO MYNAM ": IOC %s_reset routed to LAN driver!\n", 308 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : ( 309 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"))); 310 311 if (priv->mpt_rxfidx == NULL) 312 return (1); 313 314 if (reset_phase == MPT_IOC_SETUP_RESET) { 315 ; 316 } else if (reset_phase == MPT_IOC_PRE_RESET) { 317 int i; 318 unsigned long flags; 319 320 netif_stop_queue(dev); 321 322 dlprintk ((KERN_INFO "mptlan/ioc_reset: called netif_stop_queue for %s.\n", dev->name)); 323 324 atomic_set(&priv->buckets_out, 0); 325 326 /* Reset Rx Free Tail index and re-populate the queue. */ 327 spin_lock_irqsave(&priv->rxfidx_lock, flags); 328 priv->mpt_rxfidx_tail = -1; 329 for (i = 0; i < priv->max_buckets_out; i++) 330 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 331 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 332 } else { 333 mpt_lan_post_receive_buckets(priv); 334 netif_wake_queue(dev); 335 } 336 337 return 1; 338 } 339 340 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 341 static int 342 mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply) 343 { 344 dlprintk((KERN_INFO MYNAM ": MPT event routed to LAN driver!\n")); 345 346 switch (le32_to_cpu(pEvReply->Event)) { 347 case MPI_EVENT_NONE: /* 00 */ 348 case MPI_EVENT_LOG_DATA: /* 01 */ 349 case MPI_EVENT_STATE_CHANGE: /* 02 */ 350 case MPI_EVENT_UNIT_ATTENTION: /* 03 */ 351 case MPI_EVENT_IOC_BUS_RESET: /* 04 */ 352 case MPI_EVENT_EXT_BUS_RESET: /* 05 */ 353 case MPI_EVENT_RESCAN: /* 06 */ 354 /* Ok, do we need to do anything here? As far as 355 I can tell, this is when a new device gets added 356 to the loop. */ 357 case MPI_EVENT_LINK_STATUS_CHANGE: /* 07 */ 358 case MPI_EVENT_LOOP_STATE_CHANGE: /* 08 */ 359 case MPI_EVENT_LOGOUT: /* 09 */ 360 case MPI_EVENT_EVENT_CHANGE: /* 0A */ 361 default: 362 break; 363 } 364 365 /* 366 * NOTE: pEvent->AckRequired handling now done in mptbase.c; 367 * Do NOT do it here now! 368 */ 369 370 return 1; 371 } 372 373 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 374 static int 375 mpt_lan_open(struct net_device *dev) 376 { 377 struct mpt_lan_priv *priv = netdev_priv(dev); 378 int i; 379 380 if (mpt_lan_reset(dev) != 0) { 381 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 382 383 printk (KERN_WARNING MYNAM "/lan_open: lan_reset failed."); 384 385 if (mpt_dev->active) 386 printk ("The ioc is active. Perhaps it needs to be" 387 " reset?\n"); 388 else 389 printk ("The ioc in inactive, most likely in the " 390 "process of being reset. Please try again in " 391 "a moment.\n"); 392 } 393 394 priv->mpt_txfidx = kmalloc_array(priv->tx_max_out, sizeof(int), 395 GFP_KERNEL); 396 if (priv->mpt_txfidx == NULL) 397 goto out; 398 priv->mpt_txfidx_tail = -1; 399 400 priv->SendCtl = kcalloc(priv->tx_max_out, sizeof(struct BufferControl), 401 GFP_KERNEL); 402 if (priv->SendCtl == NULL) 403 goto out_mpt_txfidx; 404 for (i = 0; i < priv->tx_max_out; i++) 405 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = i; 406 407 dlprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtl\n")); 408 409 priv->mpt_rxfidx = kmalloc_array(priv->max_buckets_out, sizeof(int), 410 GFP_KERNEL); 411 if (priv->mpt_rxfidx == NULL) 412 goto out_SendCtl; 413 priv->mpt_rxfidx_tail = -1; 414 415 priv->RcvCtl = kcalloc(priv->max_buckets_out, 416 sizeof(struct BufferControl), 417 GFP_KERNEL); 418 if (priv->RcvCtl == NULL) 419 goto out_mpt_rxfidx; 420 for (i = 0; i < priv->max_buckets_out; i++) 421 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 422 423 /**/ dlprintk((KERN_INFO MYNAM "/lo: txfidx contains - ")); 424 /**/ for (i = 0; i < priv->tx_max_out; i++) 425 /**/ dlprintk((" %xh", priv->mpt_txfidx[i])); 426 /**/ dlprintk(("\n")); 427 428 dlprintk((KERN_INFO MYNAM "/lo: Finished initializing RcvCtl\n")); 429 430 mpt_lan_post_receive_buckets(priv); 431 printk(KERN_INFO MYNAM ": %s/%s: interface up & active\n", 432 IOC_AND_NETDEV_NAMES_s_s(dev)); 433 434 if (mpt_event_register(LanCtx, mpt_lan_event_process) != 0) { 435 printk (KERN_WARNING MYNAM "/lo: Unable to register for Event" 436 " Notifications. This is a bad thing! We're not going " 437 "to go ahead, but I'd be leery of system stability at " 438 "this point.\n"); 439 } 440 441 netif_start_queue(dev); 442 dlprintk((KERN_INFO MYNAM "/lo: Done.\n")); 443 444 return 0; 445 out_mpt_rxfidx: 446 kfree(priv->mpt_rxfidx); 447 priv->mpt_rxfidx = NULL; 448 out_SendCtl: 449 kfree(priv->SendCtl); 450 priv->SendCtl = NULL; 451 out_mpt_txfidx: 452 kfree(priv->mpt_txfidx); 453 priv->mpt_txfidx = NULL; 454 out: return -ENOMEM; 455 } 456 457 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 458 /* Send a LanReset message to the FW. This should result in the FW returning 459 any buckets it still has. */ 460 static int 461 mpt_lan_reset(struct net_device *dev) 462 { 463 MPT_FRAME_HDR *mf; 464 LANResetRequest_t *pResetReq; 465 struct mpt_lan_priv *priv = netdev_priv(dev); 466 467 mf = mpt_get_msg_frame(LanCtx, priv->mpt_dev); 468 469 if (mf == NULL) { 470 /* dlprintk((KERN_ERR MYNAM "/reset: Evil funkiness abounds! " 471 "Unable to allocate a request frame.\n")); 472 */ 473 return -1; 474 } 475 476 pResetReq = (LANResetRequest_t *) mf; 477 478 pResetReq->Function = MPI_FUNCTION_LAN_RESET; 479 pResetReq->ChainOffset = 0; 480 pResetReq->Reserved = 0; 481 pResetReq->PortNumber = priv->pnum; 482 pResetReq->MsgFlags = 0; 483 pResetReq->Reserved2 = 0; 484 485 mpt_put_msg_frame(LanCtx, priv->mpt_dev, mf); 486 487 return 0; 488 } 489 490 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 491 static int 492 mpt_lan_close(struct net_device *dev) 493 { 494 struct mpt_lan_priv *priv = netdev_priv(dev); 495 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 496 unsigned long timeout; 497 int i; 498 499 dlprintk((KERN_INFO MYNAM ": mpt_lan_close called\n")); 500 501 mpt_event_deregister(LanCtx); 502 503 dlprintk((KERN_INFO MYNAM ":lan_close: Posted %d buckets " 504 "since driver was loaded, %d still out\n", 505 priv->total_posted,atomic_read(&priv->buckets_out))); 506 507 netif_stop_queue(dev); 508 509 mpt_lan_reset(dev); 510 511 timeout = jiffies + 2 * HZ; 512 while (atomic_read(&priv->buckets_out) && time_before(jiffies, timeout)) 513 schedule_timeout_interruptible(1); 514 515 for (i = 0; i < priv->max_buckets_out; i++) { 516 if (priv->RcvCtl[i].skb != NULL) { 517 /**/ dlprintk((KERN_INFO MYNAM "/lan_close: bucket %05x " 518 /**/ "is still out\n", i)); 519 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[i].dma, 520 priv->RcvCtl[i].len, 521 PCI_DMA_FROMDEVICE); 522 dev_kfree_skb(priv->RcvCtl[i].skb); 523 } 524 } 525 526 kfree(priv->RcvCtl); 527 kfree(priv->mpt_rxfidx); 528 529 for (i = 0; i < priv->tx_max_out; i++) { 530 if (priv->SendCtl[i].skb != NULL) { 531 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[i].dma, 532 priv->SendCtl[i].len, 533 PCI_DMA_TODEVICE); 534 dev_kfree_skb(priv->SendCtl[i].skb); 535 } 536 } 537 538 kfree(priv->SendCtl); 539 kfree(priv->mpt_txfidx); 540 541 atomic_set(&priv->buckets_out, 0); 542 543 printk(KERN_INFO MYNAM ": %s/%s: interface down & inactive\n", 544 IOC_AND_NETDEV_NAMES_s_s(dev)); 545 546 return 0; 547 } 548 549 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 550 /* Tx timeout handler. */ 551 static void 552 mpt_lan_tx_timeout(struct net_device *dev, unsigned int txqueue) 553 { 554 struct mpt_lan_priv *priv = netdev_priv(dev); 555 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 556 557 if (mpt_dev->active) { 558 dlprintk (("mptlan/tx_timeout: calling netif_wake_queue for %s.\n", dev->name)); 559 netif_wake_queue(dev); 560 } 561 } 562 563 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 564 //static inline int 565 static int 566 mpt_lan_send_turbo(struct net_device *dev, u32 tmsg) 567 { 568 struct mpt_lan_priv *priv = netdev_priv(dev); 569 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 570 struct sk_buff *sent; 571 unsigned long flags; 572 u32 ctx; 573 574 ctx = GET_LAN_BUFFER_CONTEXT(tmsg); 575 sent = priv->SendCtl[ctx].skb; 576 577 dev->stats.tx_packets++; 578 dev->stats.tx_bytes += sent->len; 579 580 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 581 IOC_AND_NETDEV_NAMES_s_s(dev), 582 __func__, sent)); 583 584 priv->SendCtl[ctx].skb = NULL; 585 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 586 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 587 dev_kfree_skb_irq(sent); 588 589 spin_lock_irqsave(&priv->txfidx_lock, flags); 590 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 591 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 592 593 netif_wake_queue(dev); 594 return 0; 595 } 596 597 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 598 static int 599 mpt_lan_send_reply(struct net_device *dev, LANSendReply_t *pSendRep) 600 { 601 struct mpt_lan_priv *priv = netdev_priv(dev); 602 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 603 struct sk_buff *sent; 604 unsigned long flags; 605 int FreeReqFrame = 0; 606 u32 *pContext; 607 u32 ctx; 608 u8 count; 609 610 count = pSendRep->NumberOfContexts; 611 612 dioprintk((KERN_INFO MYNAM ": send_reply: IOCStatus: %04x\n", 613 le16_to_cpu(pSendRep->IOCStatus))); 614 615 /* Add check for Loginfo Flag in IOCStatus */ 616 617 switch (le16_to_cpu(pSendRep->IOCStatus) & MPI_IOCSTATUS_MASK) { 618 case MPI_IOCSTATUS_SUCCESS: 619 dev->stats.tx_packets += count; 620 break; 621 622 case MPI_IOCSTATUS_LAN_CANCELED: 623 case MPI_IOCSTATUS_LAN_TRANSMIT_ABORTED: 624 break; 625 626 case MPI_IOCSTATUS_INVALID_SGL: 627 dev->stats.tx_errors += count; 628 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Invalid SGL sent to IOC!\n", 629 IOC_AND_NETDEV_NAMES_s_s(dev)); 630 goto out; 631 632 default: 633 dev->stats.tx_errors += count; 634 break; 635 } 636 637 pContext = &pSendRep->BufferContext; 638 639 spin_lock_irqsave(&priv->txfidx_lock, flags); 640 while (count > 0) { 641 ctx = GET_LAN_BUFFER_CONTEXT(le32_to_cpu(*pContext)); 642 643 sent = priv->SendCtl[ctx].skb; 644 dev->stats.tx_bytes += sent->len; 645 646 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 647 IOC_AND_NETDEV_NAMES_s_s(dev), 648 __func__, sent)); 649 650 priv->SendCtl[ctx].skb = NULL; 651 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 652 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 653 dev_kfree_skb_irq(sent); 654 655 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 656 657 pContext++; 658 count--; 659 } 660 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 661 662 out: 663 if (!(pSendRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 664 FreeReqFrame = 1; 665 666 netif_wake_queue(dev); 667 return FreeReqFrame; 668 } 669 670 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 671 static netdev_tx_t 672 mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev) 673 { 674 struct mpt_lan_priv *priv = netdev_priv(dev); 675 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 676 MPT_FRAME_HDR *mf; 677 LANSendRequest_t *pSendReq; 678 SGETransaction32_t *pTrans; 679 SGESimple64_t *pSimple; 680 const unsigned char *mac; 681 dma_addr_t dma; 682 unsigned long flags; 683 int ctx; 684 u16 cur_naa = 0x1000; 685 686 dioprintk((KERN_INFO MYNAM ": %s called, skb_addr = %p\n", 687 __func__, skb)); 688 689 spin_lock_irqsave(&priv->txfidx_lock, flags); 690 if (priv->mpt_txfidx_tail < 0) { 691 netif_stop_queue(dev); 692 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 693 694 printk (KERN_ERR "%s: no tx context available: %u\n", 695 __func__, priv->mpt_txfidx_tail); 696 return NETDEV_TX_BUSY; 697 } 698 699 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 700 if (mf == NULL) { 701 netif_stop_queue(dev); 702 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 703 704 printk (KERN_ERR "%s: Unable to alloc request frame\n", 705 __func__); 706 return NETDEV_TX_BUSY; 707 } 708 709 ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--]; 710 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 711 712 // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).\n", 713 // IOC_AND_NETDEV_NAMES_s_s(dev))); 714 715 pSendReq = (LANSendRequest_t *) mf; 716 717 /* Set the mac.raw pointer, since this apparently isn't getting 718 * done before we get the skb. Pull the data pointer past the mac data. 719 */ 720 skb_reset_mac_header(skb); 721 skb_pull(skb, 12); 722 723 dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len, 724 PCI_DMA_TODEVICE); 725 726 priv->SendCtl[ctx].skb = skb; 727 priv->SendCtl[ctx].dma = dma; 728 priv->SendCtl[ctx].len = skb->len; 729 730 /* Message Header */ 731 pSendReq->Reserved = 0; 732 pSendReq->Function = MPI_FUNCTION_LAN_SEND; 733 pSendReq->ChainOffset = 0; 734 pSendReq->Reserved2 = 0; 735 pSendReq->MsgFlags = 0; 736 pSendReq->PortNumber = priv->pnum; 737 738 /* Transaction Context Element */ 739 pTrans = (SGETransaction32_t *) pSendReq->SG_List; 740 741 /* No Flags, 8 bytes of Details, 32bit Context (bloody turbo replies) */ 742 pTrans->ContextSize = sizeof(u32); 743 pTrans->DetailsLength = 2 * sizeof(u32); 744 pTrans->Flags = 0; 745 pTrans->TransactionContext = cpu_to_le32(ctx); 746 747 // dioprintk((KERN_INFO MYNAM ": %s/%s: BC = %08x, skb = %p, buff = %p\n", 748 // IOC_AND_NETDEV_NAMES_s_s(dev), 749 // ctx, skb, skb->data)); 750 751 mac = skb_mac_header(skb); 752 753 pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa << 16) | 754 (mac[0] << 8) | 755 (mac[1] << 0)); 756 pTrans->TransactionDetails[1] = cpu_to_le32((mac[2] << 24) | 757 (mac[3] << 16) | 758 (mac[4] << 8) | 759 (mac[5] << 0)); 760 761 pSimple = (SGESimple64_t *) &pTrans->TransactionDetails[2]; 762 763 /* If we ever decide to send more than one Simple SGE per LANSend, then 764 we will need to make sure that LAST_ELEMENT only gets set on the 765 last one. Otherwise, bad voodoo and evil funkiness will commence. */ 766 pSimple->FlagsLength = cpu_to_le32( 767 ((MPI_SGE_FLAGS_LAST_ELEMENT | 768 MPI_SGE_FLAGS_END_OF_BUFFER | 769 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 770 MPI_SGE_FLAGS_SYSTEM_ADDRESS | 771 MPI_SGE_FLAGS_HOST_TO_IOC | 772 MPI_SGE_FLAGS_64_BIT_ADDRESSING | 773 MPI_SGE_FLAGS_END_OF_LIST) << MPI_SGE_FLAGS_SHIFT) | 774 skb->len); 775 pSimple->Address.Low = cpu_to_le32((u32) dma); 776 if (sizeof(dma_addr_t) > sizeof(u32)) 777 pSimple->Address.High = cpu_to_le32((u32) ((u64) dma >> 32)); 778 else 779 pSimple->Address.High = 0; 780 781 mpt_put_msg_frame (LanCtx, mpt_dev, mf); 782 netif_trans_update(dev); 783 784 dioprintk((KERN_INFO MYNAM ": %s/%s: Sending packet. FlagsLength = %08x.\n", 785 IOC_AND_NETDEV_NAMES_s_s(dev), 786 le32_to_cpu(pSimple->FlagsLength))); 787 788 return NETDEV_TX_OK; 789 } 790 791 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 792 static void 793 mpt_lan_wake_post_buckets_task(struct net_device *dev, int priority) 794 /* 795 * @priority: 0 = put it on the timer queue, 1 = put it on the immediate queue 796 */ 797 { 798 struct mpt_lan_priv *priv = netdev_priv(dev); 799 800 if (test_and_set_bit(0, &priv->post_buckets_active) == 0) { 801 if (priority) { 802 schedule_delayed_work(&priv->post_buckets_task, 0); 803 } else { 804 schedule_delayed_work(&priv->post_buckets_task, 1); 805 dioprintk((KERN_INFO MYNAM ": post_buckets queued on " 806 "timer.\n")); 807 } 808 dioprintk((KERN_INFO MYNAM ": %s/%s: Queued post_buckets task.\n", 809 IOC_AND_NETDEV_NAMES_s_s(dev) )); 810 } 811 } 812 813 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 814 static int 815 mpt_lan_receive_skb(struct net_device *dev, struct sk_buff *skb) 816 { 817 struct mpt_lan_priv *priv = netdev_priv(dev); 818 819 skb->protocol = mpt_lan_type_trans(skb, dev); 820 821 dioprintk((KERN_INFO MYNAM ": %s/%s: Incoming packet (%d bytes) " 822 "delivered to upper level.\n", 823 IOC_AND_NETDEV_NAMES_s_s(dev), skb->len)); 824 825 dev->stats.rx_bytes += skb->len; 826 dev->stats.rx_packets++; 827 828 skb->dev = dev; 829 netif_rx(skb); 830 831 dioprintk((MYNAM "/receive_skb: %d buckets remaining\n", 832 atomic_read(&priv->buckets_out))); 833 834 if (atomic_read(&priv->buckets_out) < priv->bucketthresh) 835 mpt_lan_wake_post_buckets_task(dev, 1); 836 837 dioprintk((KERN_INFO MYNAM "/receive_post_reply: %d buckets " 838 "remaining, %d received back since sod\n", 839 atomic_read(&priv->buckets_out), priv->total_received)); 840 841 return 0; 842 } 843 844 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 845 //static inline int 846 static int 847 mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg) 848 { 849 struct mpt_lan_priv *priv = netdev_priv(dev); 850 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 851 struct sk_buff *skb, *old_skb; 852 unsigned long flags; 853 u32 ctx, len; 854 855 ctx = GET_LAN_BUCKET_CONTEXT(tmsg); 856 skb = priv->RcvCtl[ctx].skb; 857 858 len = GET_LAN_PACKET_LENGTH(tmsg); 859 860 if (len < MPT_LAN_RX_COPYBREAK) { 861 old_skb = skb; 862 863 skb = (struct sk_buff *)dev_alloc_skb(len); 864 if (!skb) { 865 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 866 IOC_AND_NETDEV_NAMES_s_s(dev), 867 __FILE__, __LINE__); 868 return -ENOMEM; 869 } 870 871 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 872 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 873 874 skb_copy_from_linear_data(old_skb, skb_put(skb, len), len); 875 876 pci_dma_sync_single_for_device(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 877 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 878 goto out; 879 } 880 881 skb_put(skb, len); 882 883 priv->RcvCtl[ctx].skb = NULL; 884 885 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 886 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 887 888 out: 889 spin_lock_irqsave(&priv->rxfidx_lock, flags); 890 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 891 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 892 893 atomic_dec(&priv->buckets_out); 894 priv->total_received++; 895 896 return mpt_lan_receive_skb(dev, skb); 897 } 898 899 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 900 static int 901 mpt_lan_receive_post_free(struct net_device *dev, 902 LANReceivePostReply_t *pRecvRep) 903 { 904 struct mpt_lan_priv *priv = netdev_priv(dev); 905 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 906 unsigned long flags; 907 struct sk_buff *skb; 908 u32 ctx; 909 int count; 910 int i; 911 912 count = pRecvRep->NumberOfContexts; 913 914 /**/ dlprintk((KERN_INFO MYNAM "/receive_post_reply: " 915 "IOC returned %d buckets, freeing them...\n", count)); 916 917 spin_lock_irqsave(&priv->rxfidx_lock, flags); 918 for (i = 0; i < count; i++) { 919 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 920 921 skb = priv->RcvCtl[ctx].skb; 922 923 // dlprintk((KERN_INFO MYNAM ": %s: dev_name = %s\n", 924 // IOC_AND_NETDEV_NAMES_s_s(dev))); 925 // dlprintk((KERN_INFO MYNAM "@rpr[2], priv = %p, buckets_out addr = %p", 926 // priv, &(priv->buckets_out))); 927 // dlprintk((KERN_INFO MYNAM "@rpr[2] TC + 3\n")); 928 929 priv->RcvCtl[ctx].skb = NULL; 930 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 931 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 932 dev_kfree_skb_any(skb); 933 934 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 935 } 936 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 937 938 atomic_sub(count, &priv->buckets_out); 939 940 // for (i = 0; i < priv->max_buckets_out; i++) 941 // if (priv->RcvCtl[i].skb != NULL) 942 // dlprintk((KERN_INFO MYNAM "@rpr: bucket %03x " 943 // "is still out\n", i)); 944 945 /* dlprintk((KERN_INFO MYNAM "/receive_post_reply: freed %d buckets\n", 946 count)); 947 */ 948 /**/ dlprintk((KERN_INFO MYNAM "@receive_post_reply: %d buckets " 949 /**/ "remaining, %d received back since sod.\n", 950 /**/ atomic_read(&priv->buckets_out), priv->total_received)); 951 return 0; 952 } 953 954 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 955 static int 956 mpt_lan_receive_post_reply(struct net_device *dev, 957 LANReceivePostReply_t *pRecvRep) 958 { 959 struct mpt_lan_priv *priv = netdev_priv(dev); 960 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 961 struct sk_buff *skb, *old_skb; 962 unsigned long flags; 963 u32 len, ctx, offset; 964 u32 remaining = le32_to_cpu(pRecvRep->BucketsRemaining); 965 int count; 966 int i, l; 967 968 dioprintk((KERN_INFO MYNAM ": mpt_lan_receive_post_reply called\n")); 969 dioprintk((KERN_INFO MYNAM ": receive_post_reply: IOCStatus: %04x\n", 970 le16_to_cpu(pRecvRep->IOCStatus))); 971 972 if ((le16_to_cpu(pRecvRep->IOCStatus) & MPI_IOCSTATUS_MASK) == 973 MPI_IOCSTATUS_LAN_CANCELED) 974 return mpt_lan_receive_post_free(dev, pRecvRep); 975 976 len = le32_to_cpu(pRecvRep->PacketLength); 977 if (len == 0) { 978 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Got a non-TURBO " 979 "ReceivePostReply w/ PacketLength zero!\n", 980 IOC_AND_NETDEV_NAMES_s_s(dev)); 981 printk (KERN_ERR MYNAM ": MsgFlags = %02x, IOCStatus = %04x\n", 982 pRecvRep->MsgFlags, le16_to_cpu(pRecvRep->IOCStatus)); 983 return -1; 984 } 985 986 ctx = le32_to_cpu(pRecvRep->BucketContext[0]); 987 count = pRecvRep->NumberOfContexts; 988 skb = priv->RcvCtl[ctx].skb; 989 990 offset = le32_to_cpu(pRecvRep->PacketOffset); 991 // if (offset != 0) { 992 // printk (KERN_INFO MYNAM ": %s/%s: Got a ReceivePostReply " 993 // "w/ PacketOffset %u\n", 994 // IOC_AND_NETDEV_NAMES_s_s(dev), 995 // offset); 996 // } 997 998 dioprintk((KERN_INFO MYNAM ": %s/%s: @rpr, offset = %d, len = %d\n", 999 IOC_AND_NETDEV_NAMES_s_s(dev), 1000 offset, len)); 1001 1002 if (count > 1) { 1003 int szrem = len; 1004 1005 // dioprintk((KERN_INFO MYNAM ": %s/%s: Multiple buckets returned " 1006 // "for single packet, concatenating...\n", 1007 // IOC_AND_NETDEV_NAMES_s_s(dev))); 1008 1009 skb = (struct sk_buff *)dev_alloc_skb(len); 1010 if (!skb) { 1011 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1012 IOC_AND_NETDEV_NAMES_s_s(dev), 1013 __FILE__, __LINE__); 1014 return -ENOMEM; 1015 } 1016 1017 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1018 for (i = 0; i < count; i++) { 1019 1020 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 1021 old_skb = priv->RcvCtl[ctx].skb; 1022 1023 l = priv->RcvCtl[ctx].len; 1024 if (szrem < l) 1025 l = szrem; 1026 1027 // dioprintk((KERN_INFO MYNAM ": %s/%s: Buckets = %d, len = %u\n", 1028 // IOC_AND_NETDEV_NAMES_s_s(dev), 1029 // i, l)); 1030 1031 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1032 priv->RcvCtl[ctx].dma, 1033 priv->RcvCtl[ctx].len, 1034 PCI_DMA_FROMDEVICE); 1035 skb_copy_from_linear_data(old_skb, skb_put(skb, l), l); 1036 1037 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1038 priv->RcvCtl[ctx].dma, 1039 priv->RcvCtl[ctx].len, 1040 PCI_DMA_FROMDEVICE); 1041 1042 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1043 szrem -= l; 1044 } 1045 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1046 1047 } else if (len < MPT_LAN_RX_COPYBREAK) { 1048 1049 old_skb = skb; 1050 1051 skb = (struct sk_buff *)dev_alloc_skb(len); 1052 if (!skb) { 1053 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1054 IOC_AND_NETDEV_NAMES_s_s(dev), 1055 __FILE__, __LINE__); 1056 return -ENOMEM; 1057 } 1058 1059 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1060 priv->RcvCtl[ctx].dma, 1061 priv->RcvCtl[ctx].len, 1062 PCI_DMA_FROMDEVICE); 1063 1064 skb_copy_from_linear_data(old_skb, skb_put(skb, len), len); 1065 1066 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1067 priv->RcvCtl[ctx].dma, 1068 priv->RcvCtl[ctx].len, 1069 PCI_DMA_FROMDEVICE); 1070 1071 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1072 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1073 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1074 1075 } else { 1076 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1077 1078 priv->RcvCtl[ctx].skb = NULL; 1079 1080 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 1081 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 1082 priv->RcvCtl[ctx].dma = 0; 1083 1084 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1085 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1086 1087 skb_put(skb,len); 1088 } 1089 1090 atomic_sub(count, &priv->buckets_out); 1091 priv->total_received += count; 1092 1093 if (priv->mpt_rxfidx_tail >= MPT_LAN_MAX_BUCKETS_OUT) { 1094 printk (KERN_ERR MYNAM ": %s/%s: Yoohoo! mpt_rxfidx_tail = %d, " 1095 "MPT_LAN_MAX_BUCKETS_OUT = %d\n", 1096 IOC_AND_NETDEV_NAMES_s_s(dev), 1097 priv->mpt_rxfidx_tail, 1098 MPT_LAN_MAX_BUCKETS_OUT); 1099 1100 return -1; 1101 } 1102 1103 if (remaining == 0) 1104 printk (KERN_WARNING MYNAM ": %s/%s: WARNING - IOC out of buckets! " 1105 "(priv->buckets_out = %d)\n", 1106 IOC_AND_NETDEV_NAMES_s_s(dev), 1107 atomic_read(&priv->buckets_out)); 1108 else if (remaining < 10) 1109 printk (KERN_INFO MYNAM ": %s/%s: IOC says %d buckets left. " 1110 "(priv->buckets_out = %d)\n", 1111 IOC_AND_NETDEV_NAMES_s_s(dev), 1112 remaining, atomic_read(&priv->buckets_out)); 1113 1114 if ((remaining < priv->bucketthresh) && 1115 ((atomic_read(&priv->buckets_out) - remaining) > 1116 MPT_LAN_BUCKETS_REMAIN_MISMATCH_THRESH)) { 1117 1118 printk (KERN_WARNING MYNAM " Mismatch between driver's " 1119 "buckets_out count and fw's BucketsRemaining " 1120 "count has crossed the threshold, issuing a " 1121 "LanReset to clear the fw's hashtable. You may " 1122 "want to check your /var/log/messages for \"CRC " 1123 "error\" event notifications.\n"); 1124 1125 mpt_lan_reset(dev); 1126 mpt_lan_wake_post_buckets_task(dev, 0); 1127 } 1128 1129 return mpt_lan_receive_skb(dev, skb); 1130 } 1131 1132 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1133 /* Simple SGE's only at the moment */ 1134 1135 static void 1136 mpt_lan_post_receive_buckets(struct mpt_lan_priv *priv) 1137 { 1138 struct net_device *dev = priv->dev; 1139 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1140 MPT_FRAME_HDR *mf; 1141 LANReceivePostRequest_t *pRecvReq; 1142 SGETransaction32_t *pTrans; 1143 SGESimple64_t *pSimple; 1144 struct sk_buff *skb; 1145 dma_addr_t dma; 1146 u32 curr, buckets, count, max; 1147 u32 len = (dev->mtu + dev->hard_header_len + 4); 1148 unsigned long flags; 1149 int i; 1150 1151 curr = atomic_read(&priv->buckets_out); 1152 buckets = (priv->max_buckets_out - curr); 1153 1154 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %u\n", 1155 IOC_AND_NETDEV_NAMES_s_s(dev), 1156 __func__, buckets, curr)); 1157 1158 max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) / 1159 (sizeof(SGETransaction32_t) + sizeof(SGESimple64_t)); 1160 1161 while (buckets) { 1162 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 1163 if (mf == NULL) { 1164 printk (KERN_ERR "%s: Unable to alloc request frame\n", 1165 __func__); 1166 dioprintk((KERN_ERR "%s: %u buckets remaining\n", 1167 __func__, buckets)); 1168 goto out; 1169 } 1170 pRecvReq = (LANReceivePostRequest_t *) mf; 1171 1172 i = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx); 1173 mpt_dev->RequestNB[i] = 0; 1174 count = buckets; 1175 if (count > max) 1176 count = max; 1177 1178 pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE; 1179 pRecvReq->ChainOffset = 0; 1180 pRecvReq->MsgFlags = 0; 1181 pRecvReq->PortNumber = priv->pnum; 1182 1183 pTrans = (SGETransaction32_t *) pRecvReq->SG_List; 1184 pSimple = NULL; 1185 1186 for (i = 0; i < count; i++) { 1187 int ctx; 1188 1189 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1190 if (priv->mpt_rxfidx_tail < 0) { 1191 printk (KERN_ERR "%s: Can't alloc context\n", 1192 __func__); 1193 spin_unlock_irqrestore(&priv->rxfidx_lock, 1194 flags); 1195 break; 1196 } 1197 1198 ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--]; 1199 1200 skb = priv->RcvCtl[ctx].skb; 1201 if (skb && (priv->RcvCtl[ctx].len != len)) { 1202 pci_unmap_single(mpt_dev->pcidev, 1203 priv->RcvCtl[ctx].dma, 1204 priv->RcvCtl[ctx].len, 1205 PCI_DMA_FROMDEVICE); 1206 dev_kfree_skb(priv->RcvCtl[ctx].skb); 1207 skb = priv->RcvCtl[ctx].skb = NULL; 1208 } 1209 1210 if (skb == NULL) { 1211 skb = dev_alloc_skb(len); 1212 if (skb == NULL) { 1213 printk (KERN_WARNING 1214 MYNAM "/%s: Can't alloc skb\n", 1215 __func__); 1216 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1217 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1218 break; 1219 } 1220 1221 dma = pci_map_single(mpt_dev->pcidev, skb->data, 1222 len, PCI_DMA_FROMDEVICE); 1223 1224 priv->RcvCtl[ctx].skb = skb; 1225 priv->RcvCtl[ctx].dma = dma; 1226 priv->RcvCtl[ctx].len = len; 1227 } 1228 1229 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1230 1231 pTrans->ContextSize = sizeof(u32); 1232 pTrans->DetailsLength = 0; 1233 pTrans->Flags = 0; 1234 pTrans->TransactionContext = cpu_to_le32(ctx); 1235 1236 pSimple = (SGESimple64_t *) pTrans->TransactionDetails; 1237 1238 pSimple->FlagsLength = cpu_to_le32( 1239 ((MPI_SGE_FLAGS_END_OF_BUFFER | 1240 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 1241 MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len); 1242 pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma); 1243 if (sizeof(dma_addr_t) > sizeof(u32)) 1244 pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32)); 1245 else 1246 pSimple->Address.High = 0; 1247 1248 pTrans = (SGETransaction32_t *) (pSimple + 1); 1249 } 1250 1251 if (pSimple == NULL) { 1252 /**/ printk (KERN_WARNING MYNAM "/%s: No buckets posted\n", 1253 /**/ __func__); 1254 mpt_free_msg_frame(mpt_dev, mf); 1255 goto out; 1256 } 1257 1258 pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT); 1259 1260 pRecvReq->BucketCount = cpu_to_le32(i); 1261 1262 /* printk(KERN_INFO MYNAM ": posting buckets\n "); 1263 * for (i = 0; i < j + 2; i ++) 1264 * printk (" %08x", le32_to_cpu(msg[i])); 1265 * printk ("\n"); 1266 */ 1267 1268 mpt_put_msg_frame(LanCtx, mpt_dev, mf); 1269 1270 priv->total_posted += i; 1271 buckets -= i; 1272 atomic_add(i, &priv->buckets_out); 1273 } 1274 1275 out: 1276 dioprintk((KERN_INFO MYNAM "/%s: End_buckets = %u, priv->buckets_out = %u\n", 1277 __func__, buckets, atomic_read(&priv->buckets_out))); 1278 dioprintk((KERN_INFO MYNAM "/%s: Posted %u buckets and received %u back\n", 1279 __func__, priv->total_posted, priv->total_received)); 1280 1281 clear_bit(0, &priv->post_buckets_active); 1282 } 1283 1284 static void 1285 mpt_lan_post_receive_buckets_work(struct work_struct *work) 1286 { 1287 mpt_lan_post_receive_buckets(container_of(work, struct mpt_lan_priv, 1288 post_buckets_task.work)); 1289 } 1290 1291 static const struct net_device_ops mpt_netdev_ops = { 1292 .ndo_open = mpt_lan_open, 1293 .ndo_stop = mpt_lan_close, 1294 .ndo_start_xmit = mpt_lan_sdu_send, 1295 .ndo_tx_timeout = mpt_lan_tx_timeout, 1296 }; 1297 1298 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1299 static struct net_device * 1300 mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum) 1301 { 1302 struct net_device *dev; 1303 struct mpt_lan_priv *priv; 1304 u8 HWaddr[FC_ALEN], *a; 1305 1306 dev = alloc_fcdev(sizeof(struct mpt_lan_priv)); 1307 if (!dev) 1308 return NULL; 1309 1310 dev->mtu = MPT_LAN_MTU; 1311 1312 priv = netdev_priv(dev); 1313 1314 priv->dev = dev; 1315 priv->mpt_dev = mpt_dev; 1316 priv->pnum = pnum; 1317 1318 INIT_DELAYED_WORK(&priv->post_buckets_task, 1319 mpt_lan_post_receive_buckets_work); 1320 priv->post_buckets_active = 0; 1321 1322 dlprintk((KERN_INFO MYNAM "@%d: bucketlen = %d\n", 1323 __LINE__, dev->mtu + dev->hard_header_len + 4)); 1324 1325 atomic_set(&priv->buckets_out, 0); 1326 priv->total_posted = 0; 1327 priv->total_received = 0; 1328 priv->max_buckets_out = max_buckets_out; 1329 if (mpt_dev->pfacts[0].MaxLanBuckets < max_buckets_out) 1330 priv->max_buckets_out = mpt_dev->pfacts[0].MaxLanBuckets; 1331 1332 dlprintk((KERN_INFO MYNAM "@%d: MaxLanBuckets=%d, max_buckets_out/priv=%d/%d\n", 1333 __LINE__, 1334 mpt_dev->pfacts[0].MaxLanBuckets, 1335 max_buckets_out, 1336 priv->max_buckets_out)); 1337 1338 priv->bucketthresh = priv->max_buckets_out * 2 / 3; 1339 spin_lock_init(&priv->txfidx_lock); 1340 spin_lock_init(&priv->rxfidx_lock); 1341 1342 /* Grab pre-fetched LANPage1 stuff. :-) */ 1343 a = (u8 *) &mpt_dev->lan_cnfg_page1.HardwareAddressLow; 1344 1345 HWaddr[0] = a[5]; 1346 HWaddr[1] = a[4]; 1347 HWaddr[2] = a[3]; 1348 HWaddr[3] = a[2]; 1349 HWaddr[4] = a[1]; 1350 HWaddr[5] = a[0]; 1351 1352 dev->addr_len = FC_ALEN; 1353 dev_addr_set(dev, HWaddr); 1354 memset(dev->broadcast, 0xff, FC_ALEN); 1355 1356 /* The Tx queue is 127 deep on the 909. 1357 * Give ourselves some breathing room. 1358 */ 1359 priv->tx_max_out = (tx_max_out_p <= MPT_TX_MAX_OUT_LIM) ? 1360 tx_max_out_p : MPT_TX_MAX_OUT_LIM; 1361 1362 dev->netdev_ops = &mpt_netdev_ops; 1363 dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT; 1364 1365 /* MTU range: 96 - 65280 */ 1366 dev->min_mtu = MPT_LAN_MIN_MTU; 1367 dev->max_mtu = MPT_LAN_MAX_MTU; 1368 1369 dlprintk((KERN_INFO MYNAM ": Finished registering dev " 1370 "and setting initial values\n")); 1371 1372 if (register_netdev(dev) != 0) { 1373 free_netdev(dev); 1374 dev = NULL; 1375 } 1376 return dev; 1377 } 1378 1379 static int 1380 mptlan_probe(struct pci_dev *pdev) 1381 { 1382 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1383 struct net_device *dev; 1384 int i; 1385 1386 for (i = 0; i < ioc->facts.NumberOfPorts; i++) { 1387 printk(KERN_INFO MYNAM ": %s: PortNum=%x, " 1388 "ProtocolFlags=%02Xh (%c%c%c%c)\n", 1389 ioc->name, ioc->pfacts[i].PortNumber, 1390 ioc->pfacts[i].ProtocolFlags, 1391 MPT_PROTOCOL_FLAGS_c_c_c_c( 1392 ioc->pfacts[i].ProtocolFlags)); 1393 1394 if (!(ioc->pfacts[i].ProtocolFlags & 1395 MPI_PORTFACTS_PROTOCOL_LAN)) { 1396 printk(KERN_INFO MYNAM ": %s: Hmmm... LAN protocol " 1397 "seems to be disabled on this adapter port!\n", 1398 ioc->name); 1399 continue; 1400 } 1401 1402 dev = mpt_register_lan_device(ioc, i); 1403 if (!dev) { 1404 printk(KERN_ERR MYNAM ": %s: Unable to register " 1405 "port%d as a LAN device\n", ioc->name, 1406 ioc->pfacts[i].PortNumber); 1407 continue; 1408 } 1409 1410 printk(KERN_INFO MYNAM ": %s: Fusion MPT LAN device " 1411 "registered as '%s'\n", ioc->name, dev->name); 1412 printk(KERN_INFO MYNAM ": %s/%s: " 1413 "LanAddr = %pM\n", 1414 IOC_AND_NETDEV_NAMES_s_s(dev), 1415 dev->dev_addr); 1416 1417 ioc->netdev = dev; 1418 1419 return 0; 1420 } 1421 1422 return -ENODEV; 1423 } 1424 1425 static void 1426 mptlan_remove(struct pci_dev *pdev) 1427 { 1428 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1429 struct net_device *dev = ioc->netdev; 1430 1431 if(dev != NULL) { 1432 unregister_netdev(dev); 1433 free_netdev(dev); 1434 } 1435 } 1436 1437 static struct mpt_pci_driver mptlan_driver = { 1438 .probe = mptlan_probe, 1439 .remove = mptlan_remove, 1440 }; 1441 1442 static int __init mpt_lan_init (void) 1443 { 1444 show_mptmod_ver(LANAME, LANVER); 1445 1446 LanCtx = mpt_register(lan_reply, MPTLAN_DRIVER, 1447 "lan_reply"); 1448 if (LanCtx <= 0) { 1449 printk (KERN_ERR MYNAM ": Failed to register with MPT base driver\n"); 1450 return -EBUSY; 1451 } 1452 1453 dlprintk((KERN_INFO MYNAM ": assigned context of %d\n", LanCtx)); 1454 1455 if (mpt_reset_register(LanCtx, mpt_lan_ioc_reset)) { 1456 printk(KERN_ERR MYNAM ": Eieee! unable to register a reset " 1457 "handler with mptbase! The world is at an end! " 1458 "Everything is fading to black! Goodbye.\n"); 1459 return -EBUSY; 1460 } 1461 1462 dlprintk((KERN_INFO MYNAM ": Registered for IOC reset notifications\n")); 1463 1464 mpt_device_driver_register(&mptlan_driver, MPTLAN_DRIVER); 1465 return 0; 1466 } 1467 1468 static void __exit mpt_lan_exit(void) 1469 { 1470 mpt_device_driver_deregister(MPTLAN_DRIVER); 1471 mpt_reset_deregister(LanCtx); 1472 1473 if (LanCtx) { 1474 mpt_deregister(LanCtx); 1475 LanCtx = MPT_MAX_PROTOCOL_DRIVERS; 1476 } 1477 } 1478 1479 module_init(mpt_lan_init); 1480 module_exit(mpt_lan_exit); 1481 1482 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1483 static unsigned short 1484 mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev) 1485 { 1486 struct mpt_lan_ohdr *fch = (struct mpt_lan_ohdr *)skb->data; 1487 struct fcllc *fcllc; 1488 1489 skb_reset_mac_header(skb); 1490 skb_pull(skb, sizeof(struct mpt_lan_ohdr)); 1491 1492 if (fch->dtype == htons(0xffff)) { 1493 u32 *p = (u32 *) fch; 1494 1495 swab32s(p + 0); 1496 swab32s(p + 1); 1497 swab32s(p + 2); 1498 swab32s(p + 3); 1499 1500 printk (KERN_WARNING MYNAM ": %s: WARNING - Broadcast swap F/W bug detected!\n", 1501 NETDEV_PTR_TO_IOC_NAME_s(dev)); 1502 printk (KERN_WARNING MYNAM ": Please update sender @ MAC_addr = %pM\n", 1503 fch->saddr); 1504 } 1505 1506 if (*fch->daddr & 1) { 1507 if (!memcmp(fch->daddr, dev->broadcast, FC_ALEN)) { 1508 skb->pkt_type = PACKET_BROADCAST; 1509 } else { 1510 skb->pkt_type = PACKET_MULTICAST; 1511 } 1512 } else { 1513 if (memcmp(fch->daddr, dev->dev_addr, FC_ALEN)) { 1514 skb->pkt_type = PACKET_OTHERHOST; 1515 } else { 1516 skb->pkt_type = PACKET_HOST; 1517 } 1518 } 1519 1520 fcllc = (struct fcllc *)skb->data; 1521 1522 /* Strip the SNAP header from ARP packets since we don't 1523 * pass them through to the 802.2/SNAP layers. 1524 */ 1525 if (fcllc->dsap == EXTENDED_SAP && 1526 (fcllc->ethertype == htons(ETH_P_IP) || 1527 fcllc->ethertype == htons(ETH_P_ARP))) { 1528 skb_pull(skb, sizeof(struct fcllc)); 1529 return fcllc->ethertype; 1530 } 1531 1532 return htons(ETH_P_802_2); 1533 } 1534 1535 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1536