1/* 2 * PS3 gelic network driver. 3 * 4 * Copyright (C) 2007 Sony Computer Entertainment Inc. 5 * Copyright 2006, 2007 Sony Corporation 6 * 7 * This file is based on: spider_net.c 8 * 9 * (C) Copyright IBM Corp. 2005 10 * 11 * Authors : Utz Bacher <utz.bacher@de.ibm.com> 12 * Jens Osterkamp <Jens.Osterkamp@de.ibm.com> 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2, or (at your option) 17 * any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 */ 28 29#undef DEBUG 30 31#include <linux/kernel.h> 32#include <linux/module.h> 33#include <linux/slab.h> 34 35#include <linux/etherdevice.h> 36#include <linux/ethtool.h> 37#include <linux/if_vlan.h> 38 39#include <linux/in.h> 40#include <linux/ip.h> 41#include <linux/tcp.h> 42 43#include <linux/dma-mapping.h> 44#include <net/checksum.h> 45#include <asm/firmware.h> 46#include <asm/ps3.h> 47#include <asm/lv1call.h> 48 49#include "ps3_gelic_net.h" 50#include "ps3_gelic_wireless.h" 51 52#define DRV_NAME "Gelic Network Driver" 53#define DRV_VERSION "2.0" 54 55MODULE_AUTHOR("SCE Inc."); 56MODULE_DESCRIPTION("Gelic Network driver"); 57MODULE_LICENSE("GPL"); 58 59 60static inline void gelic_card_enable_rxdmac(struct gelic_card *card); 61static inline void gelic_card_disable_rxdmac(struct gelic_card *card); 62static inline void gelic_card_disable_txdmac(struct gelic_card *card); 63static inline void gelic_card_reset_chain(struct gelic_card *card, 64 struct gelic_descr_chain *chain, 65 struct gelic_descr *start_descr); 66 67/* set irq_mask */ 68int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) 69{ 70 int status; 71 72 status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), 73 mask, 0); 74 if (status) 75 dev_info(ctodev(card), 76 "%s failed %d\n", __func__, status); 77 return status; 78} 79 80static inline void gelic_card_rx_irq_on(struct gelic_card *card) 81{ 82 card->irq_mask |= GELIC_CARD_RXINT; 83 gelic_card_set_irq_mask(card, card->irq_mask); 84} 85static inline void gelic_card_rx_irq_off(struct gelic_card *card) 86{ 87 card->irq_mask &= ~GELIC_CARD_RXINT; 88 gelic_card_set_irq_mask(card, card->irq_mask); 89} 90 91static void gelic_card_get_ether_port_status(struct gelic_card *card, 92 int inform) 93{ 94 u64 v2; 95 struct net_device *ether_netdev; 96 97 lv1_net_control(bus_id(card), dev_id(card), 98 GELIC_LV1_GET_ETH_PORT_STATUS, 99 GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0, 100 &card->ether_port_status, &v2); 101 102 if (inform) { 103 ether_netdev = card->netdev[GELIC_PORT_ETHERNET_0]; 104 if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP) 105 netif_carrier_on(ether_netdev); 106 else 107 netif_carrier_off(ether_netdev); 108 } 109} 110 111static int gelic_card_set_link_mode(struct gelic_card *card, int mode) 112{ 113 int status; 114 u64 v1, v2; 115 116 status = lv1_net_control(bus_id(card), dev_id(card), 117 GELIC_LV1_SET_NEGOTIATION_MODE, 118 GELIC_LV1_PHY_ETHERNET_0, mode, 0, &v1, &v2); 119 if (status) { 120 pr_info("%s: failed setting negotiation mode %d\n", __func__, 121 status); 122 return -EBUSY; 123 } 124 125 card->link_mode = mode; 126 return 0; 127} 128 129void gelic_card_up(struct gelic_card *card) 130{ 131 pr_debug("%s: called\n", __func__); 132 mutex_lock(&card->updown_lock); 133 if (atomic_inc_return(&card->users) == 1) { 134 pr_debug("%s: real do\n", __func__); 135 /* enable irq */ 136 gelic_card_set_irq_mask(card, card->irq_mask); 137 /* start rx */ 138 gelic_card_enable_rxdmac(card); 139 140 napi_enable(&card->napi); 141 } 142 mutex_unlock(&card->updown_lock); 143 pr_debug("%s: done\n", __func__); 144} 145 146void gelic_card_down(struct gelic_card *card) 147{ 148 u64 mask; 149 pr_debug("%s: called\n", __func__); 150 mutex_lock(&card->updown_lock); 151 if (atomic_dec_if_positive(&card->users) == 0) { 152 pr_debug("%s: real do\n", __func__); 153 napi_disable(&card->napi); 154 /* 155 * Disable irq. Wireless interrupts will 156 * be disabled later if any 157 */ 158 mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED | 159 GELIC_CARD_WLAN_COMMAND_COMPLETED); 160 gelic_card_set_irq_mask(card, mask); 161 /* stop rx */ 162 gelic_card_disable_rxdmac(card); 163 gelic_card_reset_chain(card, &card->rx_chain, 164 card->descr + GELIC_NET_TX_DESCRIPTORS); 165 /* stop tx */ 166 gelic_card_disable_txdmac(card); 167 } 168 mutex_unlock(&card->updown_lock); 169 pr_debug("%s: done\n", __func__); 170} 171 172/** 173 * gelic_descr_get_status -- returns the status of a descriptor 174 * @descr: descriptor to look at 175 * 176 * returns the status as in the dmac_cmd_status field of the descriptor 177 */ 178static enum gelic_descr_dma_status 179gelic_descr_get_status(struct gelic_descr *descr) 180{ 181 return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; 182} 183 184/** 185 * gelic_descr_set_status -- sets the status of a descriptor 186 * @descr: descriptor to change 187 * @status: status to set in the descriptor 188 * 189 * changes the status to the specified value. Doesn't change other bits 190 * in the status 191 */ 192static void gelic_descr_set_status(struct gelic_descr *descr, 193 enum gelic_descr_dma_status status) 194{ 195 descr->dmac_cmd_status = cpu_to_be32(status | 196 (be32_to_cpu(descr->dmac_cmd_status) & 197 ~GELIC_DESCR_DMA_STAT_MASK)); 198 /* 199 * dma_cmd_status field is used to indicate whether the descriptor 200 * is valid or not. 201 * Usually caller of this function wants to inform that to the 202 * hardware, so we assure here the hardware sees the change. 203 */ 204 wmb(); 205} 206 207/** 208 * gelic_card_free_chain - free descriptor chain 209 * @card: card structure 210 * @descr_in: address of desc 211 */ 212static void gelic_card_free_chain(struct gelic_card *card, 213 struct gelic_descr *descr_in) 214{ 215 struct gelic_descr *descr; 216 217 for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { 218 dma_unmap_single(ctodev(card), descr->bus_addr, 219 GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); 220 descr->bus_addr = 0; 221 } 222} 223 224/** 225 * gelic_card_init_chain - links descriptor chain 226 * @card: card structure 227 * @chain: address of chain 228 * @start_descr: address of descriptor array 229 * @no: number of descriptors 230 * 231 * we manage a circular list that mirrors the hardware structure, 232 * except that the hardware uses bus addresses. 233 * 234 * returns 0 on success, <0 on failure 235 */ 236static int __devinit gelic_card_init_chain(struct gelic_card *card, 237 struct gelic_descr_chain *chain, 238 struct gelic_descr *start_descr, 239 int no) 240{ 241 int i; 242 struct gelic_descr *descr; 243 244 descr = start_descr; 245 memset(descr, 0, sizeof(*descr) * no); 246 247 /* set up the hardware pointers in each descriptor */ 248 for (i = 0; i < no; i++, descr++) { 249 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); 250 descr->bus_addr = 251 dma_map_single(ctodev(card), descr, 252 GELIC_DESCR_SIZE, 253 DMA_BIDIRECTIONAL); 254 255 if (!descr->bus_addr) 256 goto iommu_error; 257 258 descr->next = descr + 1; 259 descr->prev = descr - 1; 260 } 261 /* make them as ring */ 262 (descr - 1)->next = start_descr; 263 start_descr->prev = (descr - 1); 264 265 /* chain bus addr of hw descriptor */ 266 descr = start_descr; 267 for (i = 0; i < no; i++, descr++) { 268 descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); 269 } 270 271 chain->head = start_descr; 272 chain->tail = start_descr; 273 274 /* do not chain last hw descriptor */ 275 (descr - 1)->next_descr_addr = 0; 276 277 return 0; 278 279iommu_error: 280 for (i--, descr--; 0 <= i; i--, descr--) 281 if (descr->bus_addr) 282 dma_unmap_single(ctodev(card), descr->bus_addr, 283 GELIC_DESCR_SIZE, 284 DMA_BIDIRECTIONAL); 285 return -ENOMEM; 286} 287 288/** 289 * gelic_card_reset_chain - reset status of a descriptor chain 290 * @card: card structure 291 * @chain: address of chain 292 * @start_descr: address of descriptor array 293 * 294 * Reset the status of dma descriptors to ready state 295 * and re-initialize the hardware chain for later use 296 */ 297static void gelic_card_reset_chain(struct gelic_card *card, 298 struct gelic_descr_chain *chain, 299 struct gelic_descr *start_descr) 300{ 301 struct gelic_descr *descr; 302 303 for (descr = start_descr; start_descr != descr->next; descr++) { 304 gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); 305 descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); 306 } 307 308 chain->head = start_descr; 309 chain->tail = (descr - 1); 310 311 (descr - 1)->next_descr_addr = 0; 312} 313/** 314 * gelic_descr_prepare_rx - reinitializes a rx descriptor 315 * @card: card structure 316 * @descr: descriptor to re-init 317 * 318 * return 0 on success, <0 on failure 319 * 320 * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. 321 * Activate the descriptor state-wise 322 */ 323static int gelic_descr_prepare_rx(struct gelic_card *card, 324 struct gelic_descr *descr) 325{ 326 int offset; 327 unsigned int bufsize; 328 329 if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) 330 dev_info(ctodev(card), "%s: ERROR status\n", __func__); 331 /* we need to round up the buffer size to a multiple of 128 */ 332 bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN); 333 334 /* and we need to have it 128 byte aligned, therefore we allocate a 335 * bit more */ 336 descr->skb = dev_alloc_skb(bufsize + GELIC_NET_RXBUF_ALIGN - 1); 337 if (!descr->skb) { 338 descr->buf_addr = 0; /* tell DMAC don't touch memory */ 339 dev_info(ctodev(card), 340 "%s:allocate skb failed !!\n", __func__); 341 return -ENOMEM; 342 } 343 descr->buf_size = cpu_to_be32(bufsize); 344 descr->dmac_cmd_status = 0; 345 descr->result_size = 0; 346 descr->valid_size = 0; 347 descr->data_error = 0; 348 349 offset = ((unsigned long)descr->skb->data) & 350 (GELIC_NET_RXBUF_ALIGN - 1); 351 if (offset) 352 skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); 353 /* io-mmu-map the skb */ 354 descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), 355 descr->skb->data, 356 GELIC_NET_MAX_MTU, 357 DMA_FROM_DEVICE)); 358 if (!descr->buf_addr) { 359 dev_kfree_skb_any(descr->skb); 360 descr->skb = NULL; 361 dev_info(ctodev(card), 362 "%s:Could not iommu-map rx buffer\n", __func__); 363 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); 364 return -ENOMEM; 365 } else { 366 gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); 367 return 0; 368 } 369} 370 371/** 372 * gelic_card_release_rx_chain - free all skb of rx descr 373 * @card: card structure 374 * 375 */ 376static void gelic_card_release_rx_chain(struct gelic_card *card) 377{ 378 struct gelic_descr *descr = card->rx_chain.head; 379 380 do { 381 if (descr->skb) { 382 dma_unmap_single(ctodev(card), 383 be32_to_cpu(descr->buf_addr), 384 descr->skb->len, 385 DMA_FROM_DEVICE); 386 descr->buf_addr = 0; 387 dev_kfree_skb_any(descr->skb); 388 descr->skb = NULL; 389 gelic_descr_set_status(descr, 390 GELIC_DESCR_DMA_NOT_IN_USE); 391 } 392 descr = descr->next; 393 } while (descr != card->rx_chain.head); 394} 395 396/** 397 * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains 398 * @card: card structure 399 * 400 * fills all descriptors in the rx chain: allocates skbs 401 * and iommu-maps them. 402 * returns 0 on success, < 0 on failure 403 */ 404static int gelic_card_fill_rx_chain(struct gelic_card *card) 405{ 406 struct gelic_descr *descr = card->rx_chain.head; 407 int ret; 408 409 do { 410 if (!descr->skb) { 411 ret = gelic_descr_prepare_rx(card, descr); 412 if (ret) 413 goto rewind; 414 } 415 descr = descr->next; 416 } while (descr != card->rx_chain.head); 417 418 return 0; 419rewind: 420 gelic_card_release_rx_chain(card); 421 return ret; 422} 423 424/** 425 * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains 426 * @card: card structure 427 * 428 * returns 0 on success, < 0 on failure 429 */ 430static int __devinit gelic_card_alloc_rx_skbs(struct gelic_card *card) 431{ 432 struct gelic_descr_chain *chain; 433 int ret; 434 chain = &card->rx_chain; 435 ret = gelic_card_fill_rx_chain(card); 436 chain->tail = card->rx_top->prev; /* point to the last */ 437 return ret; 438} 439 440/** 441 * gelic_descr_release_tx - processes a used tx descriptor 442 * @card: card structure 443 * @descr: descriptor to release 444 * 445 * releases a used tx descriptor (unmapping, freeing of skb) 446 */ 447static void gelic_descr_release_tx(struct gelic_card *card, 448 struct gelic_descr *descr) 449{ 450 struct sk_buff *skb = descr->skb; 451 452 BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL)); 453 454 dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), skb->len, 455 DMA_TO_DEVICE); 456 dev_kfree_skb_any(skb); 457 458 descr->buf_addr = 0; 459 descr->buf_size = 0; 460 descr->next_descr_addr = 0; 461 descr->result_size = 0; 462 descr->valid_size = 0; 463 descr->data_status = 0; 464 descr->data_error = 0; 465 descr->skb = NULL; 466 467 /* set descr status */ 468 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); 469} 470 471static void gelic_card_stop_queues(struct gelic_card *card) 472{ 473 netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET_0]); 474 475 if (card->netdev[GELIC_PORT_WIRELESS]) 476 netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]); 477} 478static void gelic_card_wake_queues(struct gelic_card *card) 479{ 480 netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET_0]); 481 482 if (card->netdev[GELIC_PORT_WIRELESS]) 483 netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]); 484} 485/** 486 * gelic_card_release_tx_chain - processes sent tx descriptors 487 * @card: adapter structure 488 * @stop: net_stop sequence 489 * 490 * releases the tx descriptors that gelic has finished with 491 */ 492static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) 493{ 494 struct gelic_descr_chain *tx_chain; 495 enum gelic_descr_dma_status status; 496 struct net_device *netdev; 497 int release = 0; 498 499 for (tx_chain = &card->tx_chain; 500 tx_chain->head != tx_chain->tail && tx_chain->tail; 501 tx_chain->tail = tx_chain->tail->next) { 502 status = gelic_descr_get_status(tx_chain->tail); 503 netdev = tx_chain->tail->skb->dev; 504 switch (status) { 505 case GELIC_DESCR_DMA_RESPONSE_ERROR: 506 case GELIC_DESCR_DMA_PROTECTION_ERROR: 507 case GELIC_DESCR_DMA_FORCE_END: 508 if (printk_ratelimit()) 509 dev_info(ctodev(card), 510 "%s: forcing end of tx descriptor " \ 511 "with status %x\n", 512 __func__, status); 513 netdev->stats.tx_dropped++; 514 break; 515 516 case GELIC_DESCR_DMA_COMPLETE: 517 if (tx_chain->tail->skb) { 518 netdev->stats.tx_packets++; 519 netdev->stats.tx_bytes += 520 tx_chain->tail->skb->len; 521 } 522 break; 523 524 case GELIC_DESCR_DMA_CARDOWNED: 525 /* pending tx request */ 526 default: 527 /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ 528 if (!stop) 529 goto out; 530 } 531 gelic_descr_release_tx(card, tx_chain->tail); 532 release ++; 533 } 534out: 535 if (!stop && release) 536 gelic_card_wake_queues(card); 537} 538 539/** 540 * gelic_net_set_multi - sets multicast addresses and promisc flags 541 * @netdev: interface device structure 542 * 543 * gelic_net_set_multi configures multicast addresses as needed for the 544 * netdev interface. It also sets up multicast, allmulti and promisc 545 * flags appropriately 546 */ 547void gelic_net_set_multi(struct net_device *netdev) 548{ 549 struct gelic_card *card = netdev_card(netdev); 550 struct netdev_hw_addr *ha; 551 unsigned int i; 552 uint8_t *p; 553 u64 addr; 554 int status; 555 556 /* clear all multicast address */ 557 status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), 558 0, 1); 559 if (status) 560 dev_err(ctodev(card), 561 "lv1_net_remove_multicast_address failed %d\n", 562 status); 563 /* set broadcast address */ 564 status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), 565 GELIC_NET_BROADCAST_ADDR, 0); 566 if (status) 567 dev_err(ctodev(card), 568 "lv1_net_add_multicast_address failed, %d\n", 569 status); 570 571 if ((netdev->flags & IFF_ALLMULTI) || 572 (netdev_mc_count(netdev) > GELIC_NET_MC_COUNT_MAX)) { 573 status = lv1_net_add_multicast_address(bus_id(card), 574 dev_id(card), 575 0, 1); 576 if (status) 577 dev_err(ctodev(card), 578 "lv1_net_add_multicast_address failed, %d\n", 579 status); 580 return; 581 } 582 583 /* set multicast addresses */ 584 netdev_for_each_mc_addr(ha, netdev) { 585 addr = 0; 586 p = ha->addr; 587 for (i = 0; i < ETH_ALEN; i++) { 588 addr <<= 8; 589 addr |= *p++; 590 } 591 status = lv1_net_add_multicast_address(bus_id(card), 592 dev_id(card), 593 addr, 0); 594 if (status) 595 dev_err(ctodev(card), 596 "lv1_net_add_multicast_address failed, %d\n", 597 status); 598 } 599} 600 601/** 602 * gelic_card_enable_rxdmac - enables the receive DMA controller 603 * @card: card structure 604 * 605 * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN 606 * in the GDADMACCNTR register 607 */ 608static inline void gelic_card_enable_rxdmac(struct gelic_card *card) 609{ 610 int status; 611 612#ifdef DEBUG 613 if (gelic_descr_get_status(card->rx_chain.head) != 614 GELIC_DESCR_DMA_CARDOWNED) { 615 printk(KERN_ERR "%s: status=%x\n", __func__, 616 be32_to_cpu(card->rx_chain.head->dmac_cmd_status)); 617 printk(KERN_ERR "%s: nextphy=%x\n", __func__, 618 be32_to_cpu(card->rx_chain.head->next_descr_addr)); 619 printk(KERN_ERR "%s: head=%p\n", __func__, 620 card->rx_chain.head); 621 } 622#endif 623 status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), 624 card->rx_chain.head->bus_addr, 0); 625 if (status) 626 dev_info(ctodev(card), 627 "lv1_net_start_rx_dma failed, status=%d\n", status); 628} 629 630/** 631 * gelic_card_disable_rxdmac - disables the receive DMA controller 632 * @card: card structure 633 * 634 * gelic_card_disable_rxdmac terminates processing on the DMA controller by 635 * turing off DMA and issueing a force end 636 */ 637static inline void gelic_card_disable_rxdmac(struct gelic_card *card) 638{ 639 int status; 640 641 /* this hvc blocks until the DMA in progress really stopped */ 642 status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0); 643 if (status) 644 dev_err(ctodev(card), 645 "lv1_net_stop_rx_dma faild, %d\n", status); 646} 647 648/** 649 * gelic_card_disable_txdmac - disables the transmit DMA controller 650 * @card: card structure 651 * 652 * gelic_card_disable_txdmac terminates processing on the DMA controller by 653 * turing off DMA and issueing a force end 654 */ 655static inline void gelic_card_disable_txdmac(struct gelic_card *card) 656{ 657 int status; 658 659 /* this hvc blocks until the DMA in progress really stopped */ 660 status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0); 661 if (status) 662 dev_err(ctodev(card), 663 "lv1_net_stop_tx_dma faild, status=%d\n", status); 664} 665 666/** 667 * gelic_net_stop - called upon ifconfig down 668 * @netdev: interface device structure 669 * 670 * always returns 0 671 */ 672int gelic_net_stop(struct net_device *netdev) 673{ 674 struct gelic_card *card; 675 676 pr_debug("%s: start\n", __func__); 677 678 netif_stop_queue(netdev); 679 netif_carrier_off(netdev); 680 681 card = netdev_card(netdev); 682 gelic_card_down(card); 683 684 pr_debug("%s: done\n", __func__); 685 return 0; 686} 687 688/** 689 * gelic_card_get_next_tx_descr - returns the next available tx descriptor 690 * @card: device structure to get descriptor from 691 * 692 * returns the address of the next descriptor, or NULL if not available. 693 */ 694static struct gelic_descr * 695gelic_card_get_next_tx_descr(struct gelic_card *card) 696{ 697 if (!card->tx_chain.head) 698 return NULL; 699 /* see if the next descriptor is free */ 700 if (card->tx_chain.tail != card->tx_chain.head->next && 701 gelic_descr_get_status(card->tx_chain.head) == 702 GELIC_DESCR_DMA_NOT_IN_USE) 703 return card->tx_chain.head; 704 else 705 return NULL; 706 707} 708 709/** 710 * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field 711 * @descr: descriptor structure to fill out 712 * @skb: packet to consider 713 * 714 * fills out the command and status field of the descriptor structure, 715 * depending on hardware checksum settings. This function assumes a wmb() 716 * has executed before. 717 */ 718static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, 719 struct sk_buff *skb) 720{ 721 if (skb->ip_summed != CHECKSUM_PARTIAL) 722 descr->dmac_cmd_status = 723 cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | 724 GELIC_DESCR_TX_DMA_FRAME_TAIL); 725 else { 726 /* is packet ip? 727 * if yes: tcp? udp? */ 728 if (skb->protocol == htons(ETH_P_IP)) { 729 if (ip_hdr(skb)->protocol == IPPROTO_TCP) 730 descr->dmac_cmd_status = 731 cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | 732 GELIC_DESCR_TX_DMA_FRAME_TAIL); 733 734 else if (ip_hdr(skb)->protocol == IPPROTO_UDP) 735 descr->dmac_cmd_status = 736 cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | 737 GELIC_DESCR_TX_DMA_FRAME_TAIL); 738 else /* 739 * the stack should checksum non-tcp and non-udp 740 * packets on his own: NETIF_F_IP_CSUM 741 */ 742 descr->dmac_cmd_status = 743 cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | 744 GELIC_DESCR_TX_DMA_FRAME_TAIL); 745 } 746 } 747} 748 749static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, 750 unsigned short tag) 751{ 752 struct vlan_ethhdr *veth; 753 static unsigned int c; 754 755 if (skb_headroom(skb) < VLAN_HLEN) { 756 struct sk_buff *sk_tmp = skb; 757 pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c); 758 skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN); 759 if (!skb) 760 return NULL; 761 dev_kfree_skb_any(sk_tmp); 762 } 763 veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); 764 765 /* Move the mac addresses to the top of buffer */ 766 memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); 767 768 veth->h_vlan_proto = cpu_to_be16(ETH_P_8021Q); 769 veth->h_vlan_TCI = htons(tag); 770 771 return skb; 772} 773 774/** 775 * gelic_descr_prepare_tx - setup a descriptor for sending packets 776 * @card: card structure 777 * @descr: descriptor structure 778 * @skb: packet to use 779 * 780 * returns 0 on success, <0 on failure. 781 * 782 */ 783static int gelic_descr_prepare_tx(struct gelic_card *card, 784 struct gelic_descr *descr, 785 struct sk_buff *skb) 786{ 787 dma_addr_t buf; 788 789 if (card->vlan_required) { 790 struct sk_buff *skb_tmp; 791 enum gelic_port_type type; 792 793 type = netdev_port(skb->dev)->type; 794 skb_tmp = gelic_put_vlan_tag(skb, 795 card->vlan[type].tx); 796 if (!skb_tmp) 797 return -ENOMEM; 798 skb = skb_tmp; 799 } 800 801 buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); 802 803 if (!buf) { 804 dev_err(ctodev(card), 805 "dma map 2 failed (%p, %i). Dropping packet\n", 806 skb->data, skb->len); 807 return -ENOMEM; 808 } 809 810 descr->buf_addr = cpu_to_be32(buf); 811 descr->buf_size = cpu_to_be32(skb->len); 812 descr->skb = skb; 813 descr->data_status = 0; 814 descr->next_descr_addr = 0; /* terminate hw descr */ 815 gelic_descr_set_tx_cmdstat(descr, skb); 816 817 /* bump free descriptor pointer */ 818 card->tx_chain.head = descr->next; 819 return 0; 820} 821 822/** 823 * gelic_card_kick_txdma - enables TX DMA processing 824 * @card: card structure 825 * @descr: descriptor address to enable TX processing at 826 * 827 */ 828static int gelic_card_kick_txdma(struct gelic_card *card, 829 struct gelic_descr *descr) 830{ 831 int status = 0; 832 833 if (card->tx_dma_progress) 834 return 0; 835 836 if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { 837 card->tx_dma_progress = 1; 838 status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), 839 descr->bus_addr, 0); 840 if (status) 841 dev_info(ctodev(card), "lv1_net_start_txdma failed," \ 842 "status=%d\n", status); 843 } 844 return status; 845} 846 847/** 848 * gelic_net_xmit - transmits a frame over the device 849 * @skb: packet to send out 850 * @netdev: interface device structure 851 * 852 * returns 0 on success, <0 on failure 853 */ 854int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) 855{ 856 struct gelic_card *card = netdev_card(netdev); 857 struct gelic_descr *descr; 858 int result; 859 unsigned long flags; 860 861 spin_lock_irqsave(&card->tx_lock, flags); 862 863 gelic_card_release_tx_chain(card, 0); 864 865 descr = gelic_card_get_next_tx_descr(card); 866 if (!descr) { 867 /* 868 * no more descriptors free 869 */ 870 gelic_card_stop_queues(card); 871 spin_unlock_irqrestore(&card->tx_lock, flags); 872 return NETDEV_TX_BUSY; 873 } 874 875 result = gelic_descr_prepare_tx(card, descr, skb); 876 if (result) { 877 /* 878 * DMA map failed. As chanses are that failure 879 * would continue, just release skb and return 880 */ 881 netdev->stats.tx_dropped++; 882 dev_kfree_skb_any(skb); 883 spin_unlock_irqrestore(&card->tx_lock, flags); 884 return NETDEV_TX_OK; 885 } 886 /* 887 * link this prepared descriptor to previous one 888 * to achieve high performance 889 */ 890 descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); 891 /* 892 * as hardware descriptor is modified in the above lines, 893 * ensure that the hardware sees it 894 */ 895 wmb(); 896 if (gelic_card_kick_txdma(card, descr)) { 897 /* 898 * kick failed. 899 * release descriptors which were just prepared 900 */ 901 netdev->stats.tx_dropped++; 902 gelic_descr_release_tx(card, descr); 903 gelic_descr_release_tx(card, descr->next); 904 card->tx_chain.tail = descr->next->next; 905 dev_info(ctodev(card), "%s: kick failure\n", __func__); 906 } 907 908 spin_unlock_irqrestore(&card->tx_lock, flags); 909 return NETDEV_TX_OK; 910} 911 912/** 913 * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on 914 * @descr: descriptor to process 915 * @card: card structure 916 * @netdev: net_device structure to be passed packet 917 * 918 * iommu-unmaps the skb, fills out skb structure and passes the data to the 919 * stack. The descriptor state is not changed. 920 */ 921static void gelic_net_pass_skb_up(struct gelic_descr *descr, 922 struct gelic_card *card, 923 struct net_device *netdev) 924 925{ 926 struct sk_buff *skb = descr->skb; 927 u32 data_status, data_error; 928 929 data_status = be32_to_cpu(descr->data_status); 930 data_error = be32_to_cpu(descr->data_error); 931 /* unmap skb buffer */ 932 dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), 933 GELIC_NET_MAX_MTU, 934 DMA_FROM_DEVICE); 935 936 skb_put(skb, be32_to_cpu(descr->valid_size)? 937 be32_to_cpu(descr->valid_size) : 938 be32_to_cpu(descr->result_size)); 939 if (!descr->valid_size) 940 dev_info(ctodev(card), "buffer full %x %x %x\n", 941 be32_to_cpu(descr->result_size), 942 be32_to_cpu(descr->buf_size), 943 be32_to_cpu(descr->dmac_cmd_status)); 944 945 descr->skb = NULL; 946 /* 947 * the card put 2 bytes vlan tag in front 948 * of the ethernet frame 949 */ 950 skb_pull(skb, 2); 951 skb->protocol = eth_type_trans(skb, netdev); 952 953 /* checksum offload */ 954 if (card->rx_csum) { 955 if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && 956 (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) 957 skb->ip_summed = CHECKSUM_UNNECESSARY; 958 else 959 skb->ip_summed = CHECKSUM_NONE; 960 } else 961 skb->ip_summed = CHECKSUM_NONE; 962 963 /* update netdevice statistics */ 964 netdev->stats.rx_packets++; 965 netdev->stats.rx_bytes += skb->len; 966 967 /* pass skb up to stack */ 968 netif_receive_skb(skb); 969} 970 971/** 972 * gelic_card_decode_one_descr - processes an rx descriptor 973 * @card: card structure 974 * 975 * returns 1 if a packet has been sent to the stack, otherwise 0 976 * 977 * processes an rx descriptor by iommu-unmapping the data buffer and passing 978 * the packet up to the stack 979 */ 980static int gelic_card_decode_one_descr(struct gelic_card *card) 981{ 982 enum gelic_descr_dma_status status; 983 struct gelic_descr_chain *chain = &card->rx_chain; 984 struct gelic_descr *descr = chain->head; 985 struct net_device *netdev = NULL; 986 int dmac_chain_ended; 987 988 status = gelic_descr_get_status(descr); 989 /* is this descriptor terminated with next_descr == NULL? */ 990 dmac_chain_ended = 991 be32_to_cpu(descr->dmac_cmd_status) & 992 GELIC_DESCR_RX_DMA_CHAIN_END; 993 994 if (status == GELIC_DESCR_DMA_CARDOWNED) 995 return 0; 996 997 if (status == GELIC_DESCR_DMA_NOT_IN_USE) { 998 dev_dbg(ctodev(card), "dormant descr? %p\n", descr); 999 return 0; 1000 } 1001 1002 /* netdevice select */ 1003 if (card->vlan_required) { 1004 unsigned int i; 1005 u16 vid; 1006 vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK; 1007 for (i = 0; i < GELIC_PORT_MAX; i++) { 1008 if (card->vlan[i].rx == vid) { 1009 netdev = card->netdev[i]; 1010 break; 1011 } 1012 }; 1013 if (GELIC_PORT_MAX <= i) { 1014 pr_info("%s: unknown packet vid=%x\n", __func__, vid); 1015 goto refill; 1016 } 1017 } else 1018 netdev = card->netdev[GELIC_PORT_ETHERNET_0]; 1019 1020 if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || 1021 (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || 1022 (status == GELIC_DESCR_DMA_FORCE_END)) { 1023 dev_info(ctodev(card), "dropping RX descriptor with state %x\n", 1024 status); 1025 netdev->stats.rx_dropped++; 1026 goto refill; 1027 } 1028 1029 if (status == GELIC_DESCR_DMA_BUFFER_FULL) { 1030 /* 1031 * Buffer full would occur if and only if 1032 * the frame length was longer than the size of this 1033 * descriptor's buffer. If the frame length was equal 1034 * to or shorter than buffer'size, FRAME_END condition 1035 * would occur. 1036 * Anyway this frame was longer than the MTU, 1037 * just drop it. 1038 */ 1039 dev_info(ctodev(card), "overlength frame\n"); 1040 goto refill; 1041 } 1042 /* 1043 * descriptoers any other than FRAME_END here should 1044 * be treated as error. 1045 */ 1046 if (status != GELIC_DESCR_DMA_FRAME_END) { 1047 dev_dbg(ctodev(card), "RX descriptor with state %x\n", 1048 status); 1049 goto refill; 1050 } 1051 1052 /* ok, we've got a packet in descr */ 1053 gelic_net_pass_skb_up(descr, card, netdev); 1054refill: 1055 /* 1056 * So that always DMAC can see the end 1057 * of the descriptor chain to avoid 1058 * from unwanted DMAC overrun. 1059 */ 1060 descr->next_descr_addr = 0; 1061 1062 /* change the descriptor state: */ 1063 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); 1064 1065 /* 1066 * this call can fail, but for now, just leave this 1067 * decriptor without skb 1068 */ 1069 gelic_descr_prepare_rx(card, descr); 1070 1071 chain->tail = descr; 1072 chain->head = descr->next; 1073 1074 /* 1075 * Set this descriptor the end of the chain. 1076 */ 1077 descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); 1078 1079 /* 1080 * If dmac chain was met, DMAC stopped. 1081 * thus re-enable it 1082 */ 1083 if (dmac_chain_ended) { 1084 card->rx_dma_restart_required = 1; 1085 dev_dbg(ctodev(card), "reenable rx dma scheduled\n"); 1086 } 1087 1088 return 1; 1089} 1090 1091/** 1092 * gelic_net_poll - NAPI poll function called by the stack to return packets 1093 * @napi: napi structure 1094 * @budget: number of packets we can pass to the stack at most 1095 * 1096 * returns the number of the processed packets 1097 * 1098 */ 1099static int gelic_net_poll(struct napi_struct *napi, int budget) 1100{ 1101 struct gelic_card *card = container_of(napi, struct gelic_card, napi); 1102 int packets_done = 0; 1103 1104 while (packets_done < budget) { 1105 if (!gelic_card_decode_one_descr(card)) 1106 break; 1107 1108 packets_done++; 1109 } 1110 1111 if (packets_done < budget) { 1112 napi_complete(napi); 1113 gelic_card_rx_irq_on(card); 1114 } 1115 return packets_done; 1116} 1117/** 1118 * gelic_net_change_mtu - changes the MTU of an interface 1119 * @netdev: interface device structure 1120 * @new_mtu: new MTU value 1121 * 1122 * returns 0 on success, <0 on failure 1123 */ 1124int gelic_net_change_mtu(struct net_device *netdev, int new_mtu) 1125{ 1126 /* no need to re-alloc skbs or so -- the max mtu is about 2.3k 1127 * and mtu is outbound only anyway */ 1128 if ((new_mtu < GELIC_NET_MIN_MTU) || 1129 (new_mtu > GELIC_NET_MAX_MTU)) { 1130 return -EINVAL; 1131 } 1132 netdev->mtu = new_mtu; 1133 return 0; 1134} 1135 1136/** 1137 * gelic_card_interrupt - event handler for gelic_net 1138 */ 1139static irqreturn_t gelic_card_interrupt(int irq, void *ptr) 1140{ 1141 unsigned long flags; 1142 struct gelic_card *card = ptr; 1143 u64 status; 1144 1145 status = card->irq_status; 1146 1147 if (!status) 1148 return IRQ_NONE; 1149 1150 status &= card->irq_mask; 1151 1152 if (card->rx_dma_restart_required) { 1153 card->rx_dma_restart_required = 0; 1154 gelic_card_enable_rxdmac(card); 1155 } 1156 1157 if (status & GELIC_CARD_RXINT) { 1158 gelic_card_rx_irq_off(card); 1159 napi_schedule(&card->napi); 1160 } 1161 1162 if (status & GELIC_CARD_TXINT) { 1163 spin_lock_irqsave(&card->tx_lock, flags); 1164 card->tx_dma_progress = 0; 1165 gelic_card_release_tx_chain(card, 0); 1166 /* kick outstanding tx descriptor if any */ 1167 gelic_card_kick_txdma(card, card->tx_chain.tail); 1168 spin_unlock_irqrestore(&card->tx_lock, flags); 1169 } 1170 1171 /* ether port status changed */ 1172 if (status & GELIC_CARD_PORT_STATUS_CHANGED) 1173 gelic_card_get_ether_port_status(card, 1); 1174 1175#ifdef CONFIG_GELIC_WIRELESS 1176 if (status & (GELIC_CARD_WLAN_EVENT_RECEIVED | 1177 GELIC_CARD_WLAN_COMMAND_COMPLETED)) 1178 gelic_wl_interrupt(card->netdev[GELIC_PORT_WIRELESS], status); 1179#endif 1180 1181 return IRQ_HANDLED; 1182} 1183 1184#ifdef CONFIG_NET_POLL_CONTROLLER 1185/** 1186 * gelic_net_poll_controller - artificial interrupt for netconsole etc. 1187 * @netdev: interface device structure 1188 * 1189 * see Documentation/networking/netconsole.txt 1190 */ 1191void gelic_net_poll_controller(struct net_device *netdev) 1192{ 1193 struct gelic_card *card = netdev_card(netdev); 1194 1195 gelic_card_set_irq_mask(card, 0); 1196 gelic_card_interrupt(netdev->irq, netdev); 1197 gelic_card_set_irq_mask(card, card->irq_mask); 1198} 1199#endif /* CONFIG_NET_POLL_CONTROLLER */ 1200 1201/** 1202 * gelic_net_open - called upon ifonfig up 1203 * @netdev: interface device structure 1204 * 1205 * returns 0 on success, <0 on failure 1206 * 1207 * gelic_net_open allocates all the descriptors and memory needed for 1208 * operation, sets up multicast list and enables interrupts 1209 */ 1210int gelic_net_open(struct net_device *netdev) 1211{ 1212 struct gelic_card *card = netdev_card(netdev); 1213 1214 dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev); 1215 1216 gelic_card_up(card); 1217 1218 netif_start_queue(netdev); 1219 gelic_card_get_ether_port_status(card, 1); 1220 1221 dev_dbg(ctodev(card), " <- %s\n", __func__); 1222 return 0; 1223} 1224 1225void gelic_net_get_drvinfo(struct net_device *netdev, 1226 struct ethtool_drvinfo *info) 1227{ 1228 strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); 1229 strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); 1230} 1231 1232static int gelic_ether_get_settings(struct net_device *netdev, 1233 struct ethtool_cmd *cmd) 1234{ 1235 struct gelic_card *card = netdev_card(netdev); 1236 1237 gelic_card_get_ether_port_status(card, 0); 1238 1239 if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX) 1240 cmd->duplex = DUPLEX_FULL; 1241 else 1242 cmd->duplex = DUPLEX_HALF; 1243 1244 switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) { 1245 case GELIC_LV1_ETHER_SPEED_10: 1246 cmd->speed = SPEED_10; 1247 break; 1248 case GELIC_LV1_ETHER_SPEED_100: 1249 cmd->speed = SPEED_100; 1250 break; 1251 case GELIC_LV1_ETHER_SPEED_1000: 1252 cmd->speed = SPEED_1000; 1253 break; 1254 default: 1255 pr_info("%s: speed unknown\n", __func__); 1256 cmd->speed = SPEED_10; 1257 break; 1258 } 1259 1260 cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg | 1261 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | 1262 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | 1263 SUPPORTED_1000baseT_Full; 1264 cmd->advertising = cmd->supported; 1265 if (card->link_mode & GELIC_LV1_ETHER_AUTO_NEG) { 1266 cmd->autoneg = AUTONEG_ENABLE; 1267 } else { 1268 cmd->autoneg = AUTONEG_DISABLE; 1269 cmd->advertising &= ~ADVERTISED_Autoneg; 1270 } 1271 cmd->port = PORT_TP; 1272 1273 return 0; 1274} 1275 1276static int gelic_ether_set_settings(struct net_device *netdev, 1277 struct ethtool_cmd *cmd) 1278{ 1279 struct gelic_card *card = netdev_card(netdev); 1280 u64 mode; 1281 int ret; 1282 1283 if (cmd->autoneg == AUTONEG_ENABLE) { 1284 mode = GELIC_LV1_ETHER_AUTO_NEG; 1285 } else { 1286 switch (cmd->speed) { 1287 case SPEED_10: 1288 mode = GELIC_LV1_ETHER_SPEED_10; 1289 break; 1290 case SPEED_100: 1291 mode = GELIC_LV1_ETHER_SPEED_100; 1292 break; 1293 case SPEED_1000: 1294 mode = GELIC_LV1_ETHER_SPEED_1000; 1295 break; 1296 default: 1297 return -EINVAL; 1298 } 1299 if (cmd->duplex == DUPLEX_FULL) 1300 mode |= GELIC_LV1_ETHER_FULL_DUPLEX; 1301 else if (cmd->speed == SPEED_1000) { 1302 pr_info("1000 half duplex is not supported.\n"); 1303 return -EINVAL; 1304 } 1305 } 1306 1307 ret = gelic_card_set_link_mode(card, mode); 1308 1309 if (ret) 1310 return ret; 1311 1312 return 0; 1313} 1314 1315u32 gelic_net_get_rx_csum(struct net_device *netdev) 1316{ 1317 struct gelic_card *card = netdev_card(netdev); 1318 1319 return card->rx_csum; 1320} 1321 1322int gelic_net_set_rx_csum(struct net_device *netdev, u32 data) 1323{ 1324 struct gelic_card *card = netdev_card(netdev); 1325 1326 card->rx_csum = data; 1327 return 0; 1328} 1329 1330static void gelic_net_get_wol(struct net_device *netdev, 1331 struct ethtool_wolinfo *wol) 1332{ 1333 if (0 <= ps3_compare_firmware_version(2, 2, 0)) 1334 wol->supported = WAKE_MAGIC; 1335 else 1336 wol->supported = 0; 1337 1338 wol->wolopts = ps3_sys_manager_get_wol() ? wol->supported : 0; 1339 memset(&wol->sopass, 0, sizeof(wol->sopass)); 1340} 1341static int gelic_net_set_wol(struct net_device *netdev, 1342 struct ethtool_wolinfo *wol) 1343{ 1344 int status; 1345 struct gelic_card *card; 1346 u64 v1, v2; 1347 1348 if (ps3_compare_firmware_version(2, 2, 0) < 0 || 1349 !capable(CAP_NET_ADMIN)) 1350 return -EPERM; 1351 1352 if (wol->wolopts & ~WAKE_MAGIC) 1353 return -EINVAL; 1354 1355 card = netdev_card(netdev); 1356 if (wol->wolopts & WAKE_MAGIC) { 1357 status = lv1_net_control(bus_id(card), dev_id(card), 1358 GELIC_LV1_SET_WOL, 1359 GELIC_LV1_WOL_MAGIC_PACKET, 1360 0, GELIC_LV1_WOL_MP_ENABLE, 1361 &v1, &v2); 1362 if (status) { 1363 pr_info("%s: enabling WOL failed %d\n", __func__, 1364 status); 1365 status = -EIO; 1366 goto done; 1367 } 1368 status = lv1_net_control(bus_id(card), dev_id(card), 1369 GELIC_LV1_SET_WOL, 1370 GELIC_LV1_WOL_ADD_MATCH_ADDR, 1371 0, GELIC_LV1_WOL_MATCH_ALL, 1372 &v1, &v2); 1373 if (!status) 1374 ps3_sys_manager_set_wol(1); 1375 else { 1376 pr_info("%s: enabling WOL filter failed %d\n", 1377 __func__, status); 1378 status = -EIO; 1379 } 1380 } else { 1381 status = lv1_net_control(bus_id(card), dev_id(card), 1382 GELIC_LV1_SET_WOL, 1383 GELIC_LV1_WOL_MAGIC_PACKET, 1384 0, GELIC_LV1_WOL_MP_DISABLE, 1385 &v1, &v2); 1386 if (status) { 1387 pr_info("%s: disabling WOL failed %d\n", __func__, 1388 status); 1389 status = -EIO; 1390 goto done; 1391 } 1392 status = lv1_net_control(bus_id(card), dev_id(card), 1393 GELIC_LV1_SET_WOL, 1394 GELIC_LV1_WOL_DELETE_MATCH_ADDR, 1395 0, GELIC_LV1_WOL_MATCH_ALL, 1396 &v1, &v2); 1397 if (!status) 1398 ps3_sys_manager_set_wol(0); 1399 else { 1400 pr_info("%s: removing WOL filter failed %d\n", 1401 __func__, status); 1402 status = -EIO; 1403 } 1404 } 1405done: 1406 return status; 1407} 1408 1409static const struct ethtool_ops gelic_ether_ethtool_ops = { 1410 .get_drvinfo = gelic_net_get_drvinfo, 1411 .get_settings = gelic_ether_get_settings, 1412 .set_settings = gelic_ether_set_settings, 1413 .get_link = ethtool_op_get_link, 1414 .get_tx_csum = ethtool_op_get_tx_csum, 1415 .set_tx_csum = ethtool_op_set_tx_csum, 1416 .get_rx_csum = gelic_net_get_rx_csum, 1417 .set_rx_csum = gelic_net_set_rx_csum, 1418 .get_wol = gelic_net_get_wol, 1419 .set_wol = gelic_net_set_wol, 1420}; 1421 1422/** 1423 * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout 1424 * function (to be called not under interrupt status) 1425 * @work: work is context of tx timout task 1426 * 1427 * called as task when tx hangs, resets interface (if interface is up) 1428 */ 1429static void gelic_net_tx_timeout_task(struct work_struct *work) 1430{ 1431 struct gelic_card *card = 1432 container_of(work, struct gelic_card, tx_timeout_task); 1433 struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET_0]; 1434 1435 dev_info(ctodev(card), "%s:Timed out. Restarting...\n", __func__); 1436 1437 if (!(netdev->flags & IFF_UP)) 1438 goto out; 1439 1440 netif_device_detach(netdev); 1441 gelic_net_stop(netdev); 1442 1443 gelic_net_open(netdev); 1444 netif_device_attach(netdev); 1445 1446out: 1447 atomic_dec(&card->tx_timeout_task_counter); 1448} 1449 1450/** 1451 * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. 1452 * @netdev: interface device structure 1453 * 1454 * called, if tx hangs. Schedules a task that resets the interface 1455 */ 1456void gelic_net_tx_timeout(struct net_device *netdev) 1457{ 1458 struct gelic_card *card; 1459 1460 card = netdev_card(netdev); 1461 atomic_inc(&card->tx_timeout_task_counter); 1462 if (netdev->flags & IFF_UP) 1463 schedule_work(&card->tx_timeout_task); 1464 else 1465 atomic_dec(&card->tx_timeout_task_counter); 1466} 1467 1468static const struct net_device_ops gelic_netdevice_ops = { 1469 .ndo_open = gelic_net_open, 1470 .ndo_stop = gelic_net_stop, 1471 .ndo_start_xmit = gelic_net_xmit, 1472 .ndo_set_multicast_list = gelic_net_set_multi, 1473 .ndo_change_mtu = gelic_net_change_mtu, 1474 .ndo_tx_timeout = gelic_net_tx_timeout, 1475 .ndo_set_mac_address = eth_mac_addr, 1476 .ndo_validate_addr = eth_validate_addr, 1477#ifdef CONFIG_NET_POLL_CONTROLLER 1478 .ndo_poll_controller = gelic_net_poll_controller, 1479#endif 1480}; 1481 1482/** 1483 * gelic_ether_setup_netdev_ops - initialization of net_device operations 1484 * @netdev: net_device structure 1485 * 1486 * fills out function pointers in the net_device structure 1487 */ 1488static void __devinit gelic_ether_setup_netdev_ops(struct net_device *netdev, 1489 struct napi_struct *napi) 1490{ 1491 netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; 1492 /* NAPI */ 1493 netif_napi_add(netdev, napi, 1494 gelic_net_poll, GELIC_NET_NAPI_WEIGHT); 1495 netdev->ethtool_ops = &gelic_ether_ethtool_ops; 1496 netdev->netdev_ops = &gelic_netdevice_ops; 1497} 1498 1499/** 1500 * gelic_ether_setup_netdev - initialization of net_device 1501 * @netdev: net_device structure 1502 * @card: card structure 1503 * 1504 * Returns 0 on success or <0 on failure 1505 * 1506 * gelic_ether_setup_netdev initializes the net_device structure 1507 * and register it. 1508 **/ 1509int __devinit gelic_net_setup_netdev(struct net_device *netdev, 1510 struct gelic_card *card) 1511{ 1512 int status; 1513 u64 v1, v2; 1514 1515 netdev->features = NETIF_F_IP_CSUM; 1516 1517 status = lv1_net_control(bus_id(card), dev_id(card), 1518 GELIC_LV1_GET_MAC_ADDRESS, 1519 0, 0, 0, &v1, &v2); 1520 v1 <<= 16; 1521 if (status || !is_valid_ether_addr((u8 *)&v1)) { 1522 dev_info(ctodev(card), 1523 "%s:lv1_net_control GET_MAC_ADDR failed %d\n", 1524 __func__, status); 1525 return -EINVAL; 1526 } 1527 memcpy(netdev->dev_addr, &v1, ETH_ALEN); 1528 1529 if (card->vlan_required) { 1530 netdev->hard_header_len += VLAN_HLEN; 1531 /* 1532 * As vlan is internally used, 1533 * we can not receive vlan packets 1534 */ 1535 netdev->features |= NETIF_F_VLAN_CHALLENGED; 1536 } 1537 1538 status = register_netdev(netdev); 1539 if (status) { 1540 dev_err(ctodev(card), "%s:Couldn't register %s %d\n", 1541 __func__, netdev->name, status); 1542 return status; 1543 } 1544 dev_info(ctodev(card), "%s: MAC addr %pM\n", 1545 netdev->name, netdev->dev_addr); 1546 1547 return 0; 1548} 1549 1550/** 1551 * gelic_alloc_card_net - allocates net_device and card structure 1552 * 1553 * returns the card structure or NULL in case of errors 1554 * 1555 * the card and net_device structures are linked to each other 1556 */ 1557#define GELIC_ALIGN (32) 1558static struct gelic_card * __devinit gelic_alloc_card_net(struct net_device **netdev) 1559{ 1560 struct gelic_card *card; 1561 struct gelic_port *port; 1562 void *p; 1563 size_t alloc_size; 1564 /* 1565 * gelic requires dma descriptor is 32 bytes aligned and 1566 * the hypervisor requires irq_status is 8 bytes aligned. 1567 */ 1568 BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); 1569 BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); 1570 alloc_size = 1571 sizeof(struct gelic_card) + 1572 sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + 1573 sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS + 1574 GELIC_ALIGN - 1; 1575 1576 p = kzalloc(alloc_size, GFP_KERNEL); 1577 if (!p) 1578 return NULL; 1579 card = PTR_ALIGN(p, GELIC_ALIGN); 1580 card->unalign = p; 1581 1582 /* 1583 * alloc netdev 1584 */ 1585 *netdev = alloc_etherdev(sizeof(struct gelic_port)); 1586 if (!netdev) { 1587 kfree(card->unalign); 1588 return NULL; 1589 } 1590 port = netdev_priv(*netdev); 1591 1592 /* gelic_port */ 1593 port->netdev = *netdev; 1594 port->card = card; 1595 port->type = GELIC_PORT_ETHERNET_0; 1596 1597 /* gelic_card */ 1598 card->netdev[GELIC_PORT_ETHERNET_0] = *netdev; 1599 1600 INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); 1601 init_waitqueue_head(&card->waitq); 1602 atomic_set(&card->tx_timeout_task_counter, 0); 1603 mutex_init(&card->updown_lock); 1604 atomic_set(&card->users, 0); 1605 1606 return card; 1607} 1608 1609static void __devinit gelic_card_get_vlan_info(struct gelic_card *card) 1610{ 1611 u64 v1, v2; 1612 int status; 1613 unsigned int i; 1614 struct { 1615 int tx; 1616 int rx; 1617 } vlan_id_ix[2] = { 1618 [GELIC_PORT_ETHERNET_0] = { 1619 .tx = GELIC_LV1_VLAN_TX_ETHERNET_0, 1620 .rx = GELIC_LV1_VLAN_RX_ETHERNET_0 1621 }, 1622 [GELIC_PORT_WIRELESS] = { 1623 .tx = GELIC_LV1_VLAN_TX_WIRELESS, 1624 .rx = GELIC_LV1_VLAN_RX_WIRELESS 1625 } 1626 }; 1627 1628 for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) { 1629 /* tx tag */ 1630 status = lv1_net_control(bus_id(card), dev_id(card), 1631 GELIC_LV1_GET_VLAN_ID, 1632 vlan_id_ix[i].tx, 1633 0, 0, &v1, &v2); 1634 if (status || !v1) { 1635 if (status != LV1_NO_ENTRY) 1636 dev_dbg(ctodev(card), 1637 "get vlan id for tx(%d) failed(%d)\n", 1638 vlan_id_ix[i].tx, status); 1639 card->vlan[i].tx = 0; 1640 card->vlan[i].rx = 0; 1641 continue; 1642 } 1643 card->vlan[i].tx = (u16)v1; 1644 1645 /* rx tag */ 1646 status = lv1_net_control(bus_id(card), dev_id(card), 1647 GELIC_LV1_GET_VLAN_ID, 1648 vlan_id_ix[i].rx, 1649 0, 0, &v1, &v2); 1650 if (status || !v1) { 1651 if (status != LV1_NO_ENTRY) 1652 dev_info(ctodev(card), 1653 "get vlan id for rx(%d) failed(%d)\n", 1654 vlan_id_ix[i].rx, status); 1655 card->vlan[i].tx = 0; 1656 card->vlan[i].rx = 0; 1657 continue; 1658 } 1659 card->vlan[i].rx = (u16)v1; 1660 1661 dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n", 1662 i, card->vlan[i].tx, card->vlan[i].rx); 1663 } 1664 1665 if (card->vlan[GELIC_PORT_ETHERNET_0].tx) { 1666 BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx); 1667 card->vlan_required = 1; 1668 } else 1669 card->vlan_required = 0; 1670 1671 /* check wirelss capable firmware */ 1672 if (ps3_compare_firmware_version(1, 6, 0) < 0) { 1673 card->vlan[GELIC_PORT_WIRELESS].tx = 0; 1674 card->vlan[GELIC_PORT_WIRELESS].rx = 0; 1675 } 1676 1677 dev_info(ctodev(card), "internal vlan %s\n", 1678 card->vlan_required? "enabled" : "disabled"); 1679} 1680/** 1681 * ps3_gelic_driver_probe - add a device to the control of this driver 1682 */ 1683static int __devinit ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) 1684{ 1685 struct gelic_card *card; 1686 struct net_device *netdev; 1687 int result; 1688 1689 pr_debug("%s: called\n", __func__); 1690 result = ps3_open_hv_device(dev); 1691 1692 if (result) { 1693 dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n", 1694 __func__); 1695 goto fail_open; 1696 } 1697 1698 result = ps3_dma_region_create(dev->d_region); 1699 1700 if (result) { 1701 dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n", 1702 __func__, result); 1703 BUG_ON("check region type"); 1704 goto fail_dma_region; 1705 } 1706 1707 /* alloc card/netdevice */ 1708 card = gelic_alloc_card_net(&netdev); 1709 if (!card) { 1710 dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n", 1711 __func__); 1712 result = -ENOMEM; 1713 goto fail_alloc_card; 1714 } 1715 ps3_system_bus_set_drvdata(dev, card); 1716 card->dev = dev; 1717 1718 /* get internal vlan info */ 1719 gelic_card_get_vlan_info(card); 1720 1721 card->link_mode = GELIC_LV1_ETHER_AUTO_NEG; 1722 1723 /* setup interrupt */ 1724 result = lv1_net_set_interrupt_status_indicator(bus_id(card), 1725 dev_id(card), 1726 ps3_mm_phys_to_lpar(__pa(&card->irq_status)), 1727 0); 1728 1729 if (result) { 1730 dev_dbg(&dev->core, 1731 "%s:set_interrupt_status_indicator failed: %s\n", 1732 __func__, ps3_result(result)); 1733 result = -EIO; 1734 goto fail_status_indicator; 1735 } 1736 1737 result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY, 1738 &card->irq); 1739 1740 if (result) { 1741 dev_info(ctodev(card), 1742 "%s:gelic_net_open_device failed (%d)\n", 1743 __func__, result); 1744 result = -EPERM; 1745 goto fail_alloc_irq; 1746 } 1747 result = request_irq(card->irq, gelic_card_interrupt, 1748 IRQF_DISABLED, netdev->name, card); 1749 1750 if (result) { 1751 dev_info(ctodev(card), "%s:request_irq failed (%d)\n", 1752 __func__, result); 1753 goto fail_request_irq; 1754 } 1755 1756 /* setup card structure */ 1757 card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT | 1758 GELIC_CARD_PORT_STATUS_CHANGED; 1759 card->rx_csum = GELIC_CARD_RX_CSUM_DEFAULT; 1760 1761 1762 if (gelic_card_init_chain(card, &card->tx_chain, 1763 card->descr, GELIC_NET_TX_DESCRIPTORS)) 1764 goto fail_alloc_tx; 1765 if (gelic_card_init_chain(card, &card->rx_chain, 1766 card->descr + GELIC_NET_TX_DESCRIPTORS, 1767 GELIC_NET_RX_DESCRIPTORS)) 1768 goto fail_alloc_rx; 1769 1770 /* head of chain */ 1771 card->tx_top = card->tx_chain.head; 1772 card->rx_top = card->rx_chain.head; 1773 dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n", 1774 card->rx_top, card->tx_top, sizeof(struct gelic_descr), 1775 GELIC_NET_RX_DESCRIPTORS); 1776 /* allocate rx skbs */ 1777 if (gelic_card_alloc_rx_skbs(card)) 1778 goto fail_alloc_skbs; 1779 1780 spin_lock_init(&card->tx_lock); 1781 card->tx_dma_progress = 0; 1782 1783 /* setup net_device structure */ 1784 netdev->irq = card->irq; 1785 SET_NETDEV_DEV(netdev, &card->dev->core); 1786 gelic_ether_setup_netdev_ops(netdev, &card->napi); 1787 result = gelic_net_setup_netdev(netdev, card); 1788 if (result) { 1789 dev_dbg(&dev->core, "%s: setup_netdev failed %d", 1790 __func__, result); 1791 goto fail_setup_netdev; 1792 } 1793 1794#ifdef CONFIG_GELIC_WIRELESS 1795 if (gelic_wl_driver_probe(card)) { 1796 dev_dbg(&dev->core, "%s: WL init failed\n", __func__); 1797 goto fail_setup_netdev; 1798 } 1799#endif 1800 pr_debug("%s: done\n", __func__); 1801 return 0; 1802 1803fail_setup_netdev: 1804fail_alloc_skbs: 1805 gelic_card_free_chain(card, card->rx_chain.head); 1806fail_alloc_rx: 1807 gelic_card_free_chain(card, card->tx_chain.head); 1808fail_alloc_tx: 1809 free_irq(card->irq, card); 1810 netdev->irq = NO_IRQ; 1811fail_request_irq: 1812 ps3_sb_event_receive_port_destroy(dev, card->irq); 1813fail_alloc_irq: 1814 lv1_net_set_interrupt_status_indicator(bus_id(card), 1815 bus_id(card), 1816 0, 0); 1817fail_status_indicator: 1818 ps3_system_bus_set_drvdata(dev, NULL); 1819 kfree(netdev_card(netdev)->unalign); 1820 free_netdev(netdev); 1821fail_alloc_card: 1822 ps3_dma_region_free(dev->d_region); 1823fail_dma_region: 1824 ps3_close_hv_device(dev); 1825fail_open: 1826 return result; 1827} 1828 1829/** 1830 * ps3_gelic_driver_remove - remove a device from the control of this driver 1831 */ 1832 1833static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) 1834{ 1835 struct gelic_card *card = ps3_system_bus_get_drvdata(dev); 1836 struct net_device *netdev0; 1837 pr_debug("%s: called\n", __func__); 1838 1839 /* set auto-negotiation */ 1840 gelic_card_set_link_mode(card, GELIC_LV1_ETHER_AUTO_NEG); 1841 1842#ifdef CONFIG_GELIC_WIRELESS 1843 gelic_wl_driver_remove(card); 1844#endif 1845 /* stop interrupt */ 1846 gelic_card_set_irq_mask(card, 0); 1847 1848 /* turn off DMA, force end */ 1849 gelic_card_disable_rxdmac(card); 1850 gelic_card_disable_txdmac(card); 1851 1852 /* release chains */ 1853 gelic_card_release_tx_chain(card, 1); 1854 gelic_card_release_rx_chain(card); 1855 1856 gelic_card_free_chain(card, card->tx_top); 1857 gelic_card_free_chain(card, card->rx_top); 1858 1859 netdev0 = card->netdev[GELIC_PORT_ETHERNET_0]; 1860 /* disconnect event port */ 1861 free_irq(card->irq, card); 1862 netdev0->irq = NO_IRQ; 1863 ps3_sb_event_receive_port_destroy(card->dev, card->irq); 1864 1865 wait_event(card->waitq, 1866 atomic_read(&card->tx_timeout_task_counter) == 0); 1867 1868 lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), 1869 0 , 0); 1870 1871 unregister_netdev(netdev0); 1872 kfree(netdev_card(netdev0)->unalign); 1873 free_netdev(netdev0); 1874 1875 ps3_system_bus_set_drvdata(dev, NULL); 1876 1877 ps3_dma_region_free(dev->d_region); 1878 1879 ps3_close_hv_device(dev); 1880 1881 pr_debug("%s: done\n", __func__); 1882 return 0; 1883} 1884 1885static struct ps3_system_bus_driver ps3_gelic_driver = { 1886 .match_id = PS3_MATCH_ID_GELIC, 1887 .probe = ps3_gelic_driver_probe, 1888 .remove = ps3_gelic_driver_remove, 1889 .shutdown = ps3_gelic_driver_remove, 1890 .core.name = "ps3_gelic_driver", 1891 .core.owner = THIS_MODULE, 1892}; 1893 1894static int __init ps3_gelic_driver_init (void) 1895{ 1896 return firmware_has_feature(FW_FEATURE_PS3_LV1) 1897 ? ps3_system_bus_driver_register(&ps3_gelic_driver) 1898 : -ENODEV; 1899} 1900 1901static void __exit ps3_gelic_driver_exit (void) 1902{ 1903 ps3_system_bus_driver_unregister(&ps3_gelic_driver); 1904} 1905 1906module_init(ps3_gelic_driver_init); 1907module_exit(ps3_gelic_driver_exit); 1908 1909MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); 1910