1 /* 2 * drivers/net/ethernet/freescale/gianfar_ethtool.c 3 * 4 * Gianfar Ethernet Driver 5 * Ethtool support for Gianfar Enet 6 * Based on e1000 ethtool support 7 * 8 * Author: Andy Fleming 9 * Maintainer: Kumar Gala 10 * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> 11 * 12 * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc. 13 * 14 * This software may be used and distributed according to 15 * the terms of the GNU Public License, Version 2, incorporated herein 16 * by reference. 17 */ 18 19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 20 21 #include <linux/kernel.h> 22 #include <linux/string.h> 23 #include <linux/errno.h> 24 #include <linux/interrupt.h> 25 #include <linux/init.h> 26 #include <linux/delay.h> 27 #include <linux/netdevice.h> 28 #include <linux/etherdevice.h> 29 #include <linux/net_tstamp.h> 30 #include <linux/skbuff.h> 31 #include <linux/spinlock.h> 32 #include <linux/mm.h> 33 34 #include <asm/io.h> 35 #include <asm/irq.h> 36 #include <asm/uaccess.h> 37 #include <linux/module.h> 38 #include <linux/crc32.h> 39 #include <asm/types.h> 40 #include <linux/ethtool.h> 41 #include <linux/mii.h> 42 #include <linux/phy.h> 43 #include <linux/sort.h> 44 #include <linux/if_vlan.h> 45 46 #include "gianfar.h" 47 48 extern void gfar_start(struct net_device *dev); 49 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); 50 51 #define GFAR_MAX_COAL_USECS 0xffff 52 #define GFAR_MAX_COAL_FRAMES 0xff 53 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, 54 u64 * buf); 55 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf); 56 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); 57 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); 58 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals); 59 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals); 60 static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo); 61 62 static const char stat_gstrings[][ETH_GSTRING_LEN] = { 63 "rx-dropped-by-kernel", 64 "rx-large-frame-errors", 65 "rx-short-frame-errors", 66 "rx-non-octet-errors", 67 "rx-crc-errors", 68 "rx-overrun-errors", 69 "rx-busy-errors", 70 "rx-babbling-errors", 71 "rx-truncated-frames", 72 "ethernet-bus-error", 73 "tx-babbling-errors", 74 "tx-underrun-errors", 75 "rx-skb-missing-errors", 76 "tx-timeout-errors", 77 "tx-rx-64-frames", 78 "tx-rx-65-127-frames", 79 "tx-rx-128-255-frames", 80 "tx-rx-256-511-frames", 81 "tx-rx-512-1023-frames", 82 "tx-rx-1024-1518-frames", 83 "tx-rx-1519-1522-good-vlan", 84 "rx-bytes", 85 "rx-packets", 86 "rx-fcs-errors", 87 "receive-multicast-packet", 88 "receive-broadcast-packet", 89 "rx-control-frame-packets", 90 "rx-pause-frame-packets", 91 "rx-unknown-op-code", 92 "rx-alignment-error", 93 "rx-frame-length-error", 94 "rx-code-error", 95 "rx-carrier-sense-error", 96 "rx-undersize-packets", 97 "rx-oversize-packets", 98 "rx-fragmented-frames", 99 "rx-jabber-frames", 100 "rx-dropped-frames", 101 "tx-byte-counter", 102 "tx-packets", 103 "tx-multicast-packets", 104 "tx-broadcast-packets", 105 "tx-pause-control-frames", 106 "tx-deferral-packets", 107 "tx-excessive-deferral-packets", 108 "tx-single-collision-packets", 109 "tx-multiple-collision-packets", 110 "tx-late-collision-packets", 111 "tx-excessive-collision-packets", 112 "tx-total-collision", 113 "reserved", 114 "tx-dropped-frames", 115 "tx-jabber-frames", 116 "tx-fcs-errors", 117 "tx-control-frames", 118 "tx-oversize-frames", 119 "tx-undersize-frames", 120 "tx-fragmented-frames", 121 }; 122 123 /* Fill in a buffer with the strings which correspond to the 124 * stats */ 125 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf) 126 { 127 struct gfar_private *priv = netdev_priv(dev); 128 129 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) 130 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN); 131 else 132 memcpy(buf, stat_gstrings, 133 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN); 134 } 135 136 /* Fill in an array of 64-bit statistics from various sources. 137 * This array will be appended to the end of the ethtool_stats 138 * structure, and returned to user space 139 */ 140 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf) 141 { 142 int i; 143 struct gfar_private *priv = netdev_priv(dev); 144 struct gfar __iomem *regs = priv->gfargrp[0].regs; 145 u64 *extra = (u64 *) & priv->extra_stats; 146 147 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { 148 u32 __iomem *rmon = (u32 __iomem *) ®s->rmon; 149 struct gfar_stats *stats = (struct gfar_stats *) buf; 150 151 for (i = 0; i < GFAR_RMON_LEN; i++) 152 stats->rmon[i] = (u64) gfar_read(&rmon[i]); 153 154 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) 155 stats->extra[i] = extra[i]; 156 } else 157 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) 158 buf[i] = extra[i]; 159 } 160 161 static int gfar_sset_count(struct net_device *dev, int sset) 162 { 163 struct gfar_private *priv = netdev_priv(dev); 164 165 switch (sset) { 166 case ETH_SS_STATS: 167 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) 168 return GFAR_STATS_LEN; 169 else 170 return GFAR_EXTRA_STATS_LEN; 171 default: 172 return -EOPNOTSUPP; 173 } 174 } 175 176 /* Fills in the drvinfo structure with some basic info */ 177 static void gfar_gdrvinfo(struct net_device *dev, struct 178 ethtool_drvinfo *drvinfo) 179 { 180 strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN); 181 strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN); 182 strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN); 183 strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN); 184 drvinfo->regdump_len = 0; 185 drvinfo->eedump_len = 0; 186 } 187 188 189 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd) 190 { 191 struct gfar_private *priv = netdev_priv(dev); 192 struct phy_device *phydev = priv->phydev; 193 194 if (NULL == phydev) 195 return -ENODEV; 196 197 return phy_ethtool_sset(phydev, cmd); 198 } 199 200 201 /* Return the current settings in the ethtool_cmd structure */ 202 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd) 203 { 204 struct gfar_private *priv = netdev_priv(dev); 205 struct phy_device *phydev = priv->phydev; 206 struct gfar_priv_rx_q *rx_queue = NULL; 207 struct gfar_priv_tx_q *tx_queue = NULL; 208 209 if (NULL == phydev) 210 return -ENODEV; 211 tx_queue = priv->tx_queue[0]; 212 rx_queue = priv->rx_queue[0]; 213 214 /* etsec-1.7 and older versions have only one txic 215 * and rxic regs although they support multiple queues */ 216 cmd->maxtxpkt = get_icft_value(tx_queue->txic); 217 cmd->maxrxpkt = get_icft_value(rx_queue->rxic); 218 219 return phy_ethtool_gset(phydev, cmd); 220 } 221 222 /* Return the length of the register structure */ 223 static int gfar_reglen(struct net_device *dev) 224 { 225 return sizeof (struct gfar); 226 } 227 228 /* Return a dump of the GFAR register space */ 229 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) 230 { 231 int i; 232 struct gfar_private *priv = netdev_priv(dev); 233 u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs; 234 u32 *buf = (u32 *) regbuf; 235 236 for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++) 237 buf[i] = gfar_read(&theregs[i]); 238 } 239 240 /* Convert microseconds to ethernet clock ticks, which changes 241 * depending on what speed the controller is running at */ 242 static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs) 243 { 244 unsigned int count; 245 246 /* The timer is different, depending on the interface speed */ 247 switch (priv->phydev->speed) { 248 case SPEED_1000: 249 count = GFAR_GBIT_TIME; 250 break; 251 case SPEED_100: 252 count = GFAR_100_TIME; 253 break; 254 case SPEED_10: 255 default: 256 count = GFAR_10_TIME; 257 break; 258 } 259 260 /* Make sure we return a number greater than 0 261 * if usecs > 0 */ 262 return (usecs * 1000 + count - 1) / count; 263 } 264 265 /* Convert ethernet clock ticks to microseconds */ 266 static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks) 267 { 268 unsigned int count; 269 270 /* The timer is different, depending on the interface speed */ 271 switch (priv->phydev->speed) { 272 case SPEED_1000: 273 count = GFAR_GBIT_TIME; 274 break; 275 case SPEED_100: 276 count = GFAR_100_TIME; 277 break; 278 case SPEED_10: 279 default: 280 count = GFAR_10_TIME; 281 break; 282 } 283 284 /* Make sure we return a number greater than 0 */ 285 /* if ticks is > 0 */ 286 return (ticks * count) / 1000; 287 } 288 289 /* Get the coalescing parameters, and put them in the cvals 290 * structure. */ 291 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) 292 { 293 struct gfar_private *priv = netdev_priv(dev); 294 struct gfar_priv_rx_q *rx_queue = NULL; 295 struct gfar_priv_tx_q *tx_queue = NULL; 296 unsigned long rxtime; 297 unsigned long rxcount; 298 unsigned long txtime; 299 unsigned long txcount; 300 301 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) 302 return -EOPNOTSUPP; 303 304 if (NULL == priv->phydev) 305 return -ENODEV; 306 307 rx_queue = priv->rx_queue[0]; 308 tx_queue = priv->tx_queue[0]; 309 310 rxtime = get_ictt_value(rx_queue->rxic); 311 rxcount = get_icft_value(rx_queue->rxic); 312 txtime = get_ictt_value(tx_queue->txic); 313 txcount = get_icft_value(tx_queue->txic); 314 cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime); 315 cvals->rx_max_coalesced_frames = rxcount; 316 317 cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime); 318 cvals->tx_max_coalesced_frames = txcount; 319 320 cvals->use_adaptive_rx_coalesce = 0; 321 cvals->use_adaptive_tx_coalesce = 0; 322 323 cvals->pkt_rate_low = 0; 324 cvals->rx_coalesce_usecs_low = 0; 325 cvals->rx_max_coalesced_frames_low = 0; 326 cvals->tx_coalesce_usecs_low = 0; 327 cvals->tx_max_coalesced_frames_low = 0; 328 329 /* When the packet rate is below pkt_rate_high but above 330 * pkt_rate_low (both measured in packets per second) the 331 * normal {rx,tx}_* coalescing parameters are used. 332 */ 333 334 /* When the packet rate is (measured in packets per second) 335 * is above pkt_rate_high, the {rx,tx}_*_high parameters are 336 * used. 337 */ 338 cvals->pkt_rate_high = 0; 339 cvals->rx_coalesce_usecs_high = 0; 340 cvals->rx_max_coalesced_frames_high = 0; 341 cvals->tx_coalesce_usecs_high = 0; 342 cvals->tx_max_coalesced_frames_high = 0; 343 344 /* How often to do adaptive coalescing packet rate sampling, 345 * measured in seconds. Must not be zero. 346 */ 347 cvals->rate_sample_interval = 0; 348 349 return 0; 350 } 351 352 /* Change the coalescing values. 353 * Both cvals->*_usecs and cvals->*_frames have to be > 0 354 * in order for coalescing to be active 355 */ 356 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) 357 { 358 struct gfar_private *priv = netdev_priv(dev); 359 int i = 0; 360 361 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) 362 return -EOPNOTSUPP; 363 364 /* Set up rx coalescing */ 365 /* As of now, we will enable/disable coalescing for all 366 * queues together in case of eTSEC2, this will be modified 367 * along with the ethtool interface */ 368 if ((cvals->rx_coalesce_usecs == 0) || 369 (cvals->rx_max_coalesced_frames == 0)) { 370 for (i = 0; i < priv->num_rx_queues; i++) 371 priv->rx_queue[i]->rxcoalescing = 0; 372 } else { 373 for (i = 0; i < priv->num_rx_queues; i++) 374 priv->rx_queue[i]->rxcoalescing = 1; 375 } 376 377 if (NULL == priv->phydev) 378 return -ENODEV; 379 380 /* Check the bounds of the values */ 381 if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) { 382 pr_info("Coalescing is limited to %d microseconds\n", 383 GFAR_MAX_COAL_USECS); 384 return -EINVAL; 385 } 386 387 if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { 388 pr_info("Coalescing is limited to %d frames\n", 389 GFAR_MAX_COAL_FRAMES); 390 return -EINVAL; 391 } 392 393 for (i = 0; i < priv->num_rx_queues; i++) { 394 priv->rx_queue[i]->rxic = mk_ic_value( 395 cvals->rx_max_coalesced_frames, 396 gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs)); 397 } 398 399 /* Set up tx coalescing */ 400 if ((cvals->tx_coalesce_usecs == 0) || 401 (cvals->tx_max_coalesced_frames == 0)) { 402 for (i = 0; i < priv->num_tx_queues; i++) 403 priv->tx_queue[i]->txcoalescing = 0; 404 } else { 405 for (i = 0; i < priv->num_tx_queues; i++) 406 priv->tx_queue[i]->txcoalescing = 1; 407 } 408 409 /* Check the bounds of the values */ 410 if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) { 411 pr_info("Coalescing is limited to %d microseconds\n", 412 GFAR_MAX_COAL_USECS); 413 return -EINVAL; 414 } 415 416 if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { 417 pr_info("Coalescing is limited to %d frames\n", 418 GFAR_MAX_COAL_FRAMES); 419 return -EINVAL; 420 } 421 422 for (i = 0; i < priv->num_tx_queues; i++) { 423 priv->tx_queue[i]->txic = mk_ic_value( 424 cvals->tx_max_coalesced_frames, 425 gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs)); 426 } 427 428 gfar_configure_coalescing(priv, 0xFF, 0xFF); 429 430 return 0; 431 } 432 433 /* Fills in rvals with the current ring parameters. Currently, 434 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and 435 * jumbo are ignored by the driver */ 436 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals) 437 { 438 struct gfar_private *priv = netdev_priv(dev); 439 struct gfar_priv_tx_q *tx_queue = NULL; 440 struct gfar_priv_rx_q *rx_queue = NULL; 441 442 tx_queue = priv->tx_queue[0]; 443 rx_queue = priv->rx_queue[0]; 444 445 rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE; 446 rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE; 447 rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE; 448 rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE; 449 450 /* Values changeable by the user. The valid values are 451 * in the range 1 to the "*_max_pending" counterpart above. 452 */ 453 rvals->rx_pending = rx_queue->rx_ring_size; 454 rvals->rx_mini_pending = rx_queue->rx_ring_size; 455 rvals->rx_jumbo_pending = rx_queue->rx_ring_size; 456 rvals->tx_pending = tx_queue->tx_ring_size; 457 } 458 459 /* Change the current ring parameters, stopping the controller if 460 * necessary so that we don't mess things up while we're in 461 * motion. We wait for the ring to be clean before reallocating 462 * the rings. */ 463 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals) 464 { 465 struct gfar_private *priv = netdev_priv(dev); 466 int err = 0, i = 0; 467 468 if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE) 469 return -EINVAL; 470 471 if (!is_power_of_2(rvals->rx_pending)) { 472 netdev_err(dev, "Ring sizes must be a power of 2\n"); 473 return -EINVAL; 474 } 475 476 if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE) 477 return -EINVAL; 478 479 if (!is_power_of_2(rvals->tx_pending)) { 480 netdev_err(dev, "Ring sizes must be a power of 2\n"); 481 return -EINVAL; 482 } 483 484 485 if (dev->flags & IFF_UP) { 486 unsigned long flags; 487 488 /* Halt TX and RX, and process the frames which 489 * have already been received */ 490 local_irq_save(flags); 491 lock_tx_qs(priv); 492 lock_rx_qs(priv); 493 494 gfar_halt(dev); 495 496 unlock_rx_qs(priv); 497 unlock_tx_qs(priv); 498 local_irq_restore(flags); 499 500 for (i = 0; i < priv->num_rx_queues; i++) 501 gfar_clean_rx_ring(priv->rx_queue[i], 502 priv->rx_queue[i]->rx_ring_size); 503 504 /* Now we take down the rings to rebuild them */ 505 stop_gfar(dev); 506 } 507 508 /* Change the size */ 509 for (i = 0; i < priv->num_rx_queues; i++) { 510 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending; 511 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending; 512 priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size; 513 } 514 515 /* Rebuild the rings with the new size */ 516 if (dev->flags & IFF_UP) { 517 err = startup_gfar(dev); 518 netif_tx_wake_all_queues(dev); 519 } 520 return err; 521 } 522 523 int gfar_set_features(struct net_device *dev, netdev_features_t features) 524 { 525 struct gfar_private *priv = netdev_priv(dev); 526 unsigned long flags; 527 int err = 0, i = 0; 528 netdev_features_t changed = dev->features ^ features; 529 530 if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX)) 531 gfar_vlan_mode(dev, features); 532 533 if (!(changed & NETIF_F_RXCSUM)) 534 return 0; 535 536 if (dev->flags & IFF_UP) { 537 /* Halt TX and RX, and process the frames which 538 * have already been received */ 539 local_irq_save(flags); 540 lock_tx_qs(priv); 541 lock_rx_qs(priv); 542 543 gfar_halt(dev); 544 545 unlock_tx_qs(priv); 546 unlock_rx_qs(priv); 547 local_irq_restore(flags); 548 549 for (i = 0; i < priv->num_rx_queues; i++) 550 gfar_clean_rx_ring(priv->rx_queue[i], 551 priv->rx_queue[i]->rx_ring_size); 552 553 /* Now we take down the rings to rebuild them */ 554 stop_gfar(dev); 555 556 dev->features = features; 557 558 err = startup_gfar(dev); 559 netif_tx_wake_all_queues(dev); 560 } 561 return err; 562 } 563 564 static uint32_t gfar_get_msglevel(struct net_device *dev) 565 { 566 struct gfar_private *priv = netdev_priv(dev); 567 return priv->msg_enable; 568 } 569 570 static void gfar_set_msglevel(struct net_device *dev, uint32_t data) 571 { 572 struct gfar_private *priv = netdev_priv(dev); 573 priv->msg_enable = data; 574 } 575 576 #ifdef CONFIG_PM 577 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 578 { 579 struct gfar_private *priv = netdev_priv(dev); 580 581 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) { 582 wol->supported = WAKE_MAGIC; 583 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0; 584 } else { 585 wol->supported = wol->wolopts = 0; 586 } 587 } 588 589 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 590 { 591 struct gfar_private *priv = netdev_priv(dev); 592 unsigned long flags; 593 594 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && 595 wol->wolopts != 0) 596 return -EINVAL; 597 598 if (wol->wolopts & ~WAKE_MAGIC) 599 return -EINVAL; 600 601 device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC); 602 603 spin_lock_irqsave(&priv->bflock, flags); 604 priv->wol_en = !!device_may_wakeup(&dev->dev); 605 spin_unlock_irqrestore(&priv->bflock, flags); 606 607 return 0; 608 } 609 #endif 610 611 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow) 612 { 613 u32 fcr = 0x0, fpr = FPR_FILER_MASK; 614 615 if (ethflow & RXH_L2DA) { 616 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH | 617 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; 618 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 619 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 620 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 621 priv->cur_filer_idx = priv->cur_filer_idx - 1; 622 623 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH | 624 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; 625 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 626 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 627 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 628 priv->cur_filer_idx = priv->cur_filer_idx - 1; 629 } 630 631 if (ethflow & RXH_VLAN) { 632 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH | 633 RQFCR_AND | RQFCR_HASHTBL_0; 634 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 635 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 636 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 637 priv->cur_filer_idx = priv->cur_filer_idx - 1; 638 } 639 640 if (ethflow & RXH_IP_SRC) { 641 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | 642 RQFCR_AND | RQFCR_HASHTBL_0; 643 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 644 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 645 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 646 priv->cur_filer_idx = priv->cur_filer_idx - 1; 647 } 648 649 if (ethflow & (RXH_IP_DST)) { 650 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | 651 RQFCR_AND | RQFCR_HASHTBL_0; 652 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 653 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 654 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 655 priv->cur_filer_idx = priv->cur_filer_idx - 1; 656 } 657 658 if (ethflow & RXH_L3_PROTO) { 659 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH | 660 RQFCR_AND | RQFCR_HASHTBL_0; 661 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 662 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 663 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 664 priv->cur_filer_idx = priv->cur_filer_idx - 1; 665 } 666 667 if (ethflow & RXH_L4_B_0_1) { 668 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | 669 RQFCR_AND | RQFCR_HASHTBL_0; 670 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 671 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 672 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 673 priv->cur_filer_idx = priv->cur_filer_idx - 1; 674 } 675 676 if (ethflow & RXH_L4_B_2_3) { 677 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | 678 RQFCR_AND | RQFCR_HASHTBL_0; 679 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; 680 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; 681 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); 682 priv->cur_filer_idx = priv->cur_filer_idx - 1; 683 } 684 } 685 686 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class) 687 { 688 unsigned int last_rule_idx = priv->cur_filer_idx; 689 unsigned int cmp_rqfpr; 690 unsigned int *local_rqfpr; 691 unsigned int *local_rqfcr; 692 int i = 0x0, k = 0x0; 693 int j = MAX_FILER_IDX, l = 0x0; 694 int ret = 1; 695 696 local_rqfpr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1), 697 GFP_KERNEL); 698 local_rqfcr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1), 699 GFP_KERNEL); 700 if (!local_rqfpr || !local_rqfcr) { 701 pr_err("Out of memory\n"); 702 ret = 0; 703 goto err; 704 } 705 706 switch (class) { 707 case TCP_V4_FLOW: 708 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP; 709 break; 710 case UDP_V4_FLOW: 711 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP; 712 break; 713 case TCP_V6_FLOW: 714 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP; 715 break; 716 case UDP_V6_FLOW: 717 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP; 718 break; 719 default: 720 pr_err("Right now this class is not supported\n"); 721 ret = 0; 722 goto err; 723 } 724 725 for (i = 0; i < MAX_FILER_IDX + 1; i++) { 726 local_rqfpr[j] = priv->ftp_rqfpr[i]; 727 local_rqfcr[j] = priv->ftp_rqfcr[i]; 728 j--; 729 if ((priv->ftp_rqfcr[i] == (RQFCR_PID_PARSE | 730 RQFCR_CLE |RQFCR_AND)) && 731 (priv->ftp_rqfpr[i] == cmp_rqfpr)) 732 break; 733 } 734 735 if (i == MAX_FILER_IDX + 1) { 736 pr_err("No parse rule found, can't create hash rules\n"); 737 ret = 0; 738 goto err; 739 } 740 741 /* If a match was found, then it begins the starting of a cluster rule 742 * if it was already programmed, we need to overwrite these rules 743 */ 744 for (l = i+1; l < MAX_FILER_IDX; l++) { 745 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) && 746 !(priv->ftp_rqfcr[l] & RQFCR_AND)) { 747 priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT | 748 RQFCR_HASHTBL_0 | RQFCR_PID_MASK; 749 priv->ftp_rqfpr[l] = FPR_FILER_MASK; 750 gfar_write_filer(priv, l, priv->ftp_rqfcr[l], 751 priv->ftp_rqfpr[l]); 752 break; 753 } 754 755 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) && 756 (priv->ftp_rqfcr[l] & RQFCR_AND)) 757 continue; 758 else { 759 local_rqfpr[j] = priv->ftp_rqfpr[l]; 760 local_rqfcr[j] = priv->ftp_rqfcr[l]; 761 j--; 762 } 763 } 764 765 priv->cur_filer_idx = l - 1; 766 last_rule_idx = l; 767 768 /* hash rules */ 769 ethflow_to_filer_rules(priv, ethflow); 770 771 /* Write back the popped out rules again */ 772 for (k = j+1; k < MAX_FILER_IDX; k++) { 773 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k]; 774 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k]; 775 gfar_write_filer(priv, priv->cur_filer_idx, 776 local_rqfcr[k], local_rqfpr[k]); 777 if (!priv->cur_filer_idx) 778 break; 779 priv->cur_filer_idx = priv->cur_filer_idx - 1; 780 } 781 782 err: 783 kfree(local_rqfcr); 784 kfree(local_rqfpr); 785 return ret; 786 } 787 788 static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd) 789 { 790 /* write the filer rules here */ 791 if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type)) 792 return -EINVAL; 793 794 return 0; 795 } 796 797 static int gfar_check_filer_hardware(struct gfar_private *priv) 798 { 799 struct gfar __iomem *regs = NULL; 800 u32 i; 801 802 regs = priv->gfargrp[0].regs; 803 804 /* Check if we are in FIFO mode */ 805 i = gfar_read(®s->ecntrl); 806 i &= ECNTRL_FIFM; 807 if (i == ECNTRL_FIFM) { 808 netdev_notice(priv->ndev, "Interface in FIFO mode\n"); 809 i = gfar_read(®s->rctrl); 810 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM; 811 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) { 812 netdev_info(priv->ndev, 813 "Receive Queue Filtering enabled\n"); 814 } else { 815 netdev_warn(priv->ndev, 816 "Receive Queue Filtering disabled\n"); 817 return -EOPNOTSUPP; 818 } 819 } 820 /* Or in standard mode */ 821 else { 822 i = gfar_read(®s->rctrl); 823 i &= RCTRL_PRSDEP_MASK; 824 if (i == RCTRL_PRSDEP_MASK) { 825 netdev_info(priv->ndev, 826 "Receive Queue Filtering enabled\n"); 827 } else { 828 netdev_warn(priv->ndev, 829 "Receive Queue Filtering disabled\n"); 830 return -EOPNOTSUPP; 831 } 832 } 833 834 /* Sets the properties for arbitrary filer rule 835 * to the first 4 Layer 4 Bytes */ 836 regs->rbifx = 0xC0C1C2C3; 837 return 0; 838 } 839 840 static int gfar_comp_asc(const void *a, const void *b) 841 { 842 return memcmp(a, b, 4); 843 } 844 845 static int gfar_comp_desc(const void *a, const void *b) 846 { 847 return -memcmp(a, b, 4); 848 } 849 850 static void gfar_swap(void *a, void *b, int size) 851 { 852 u32 *_a = a; 853 u32 *_b = b; 854 855 swap(_a[0], _b[0]); 856 swap(_a[1], _b[1]); 857 swap(_a[2], _b[2]); 858 swap(_a[3], _b[3]); 859 } 860 861 /* Write a mask to filer cache */ 862 static void gfar_set_mask(u32 mask, struct filer_table *tab) 863 { 864 tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT; 865 tab->fe[tab->index].prop = mask; 866 tab->index++; 867 } 868 869 /* Sets parse bits (e.g. IP or TCP) */ 870 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab) 871 { 872 gfar_set_mask(mask, tab); 873 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE 874 | RQFCR_AND; 875 tab->fe[tab->index].prop = value; 876 tab->index++; 877 } 878 879 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag, 880 struct filer_table *tab) 881 { 882 gfar_set_mask(mask, tab); 883 tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag; 884 tab->fe[tab->index].prop = value; 885 tab->index++; 886 } 887 888 /* 889 * For setting a tuple of value and mask of type flag 890 * Example: 891 * IP-Src = 10.0.0.0/255.0.0.0 892 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4 893 * 894 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple 895 * For a don't care mask it gives us a 0 896 * 897 * The check if don't care and the mask adjustment if mask=0 is done for VLAN 898 * and MAC stuff on an upper level (due to missing information on this level). 899 * For these guys we can discard them if they are value=0 and mask=0. 900 * 901 * Further the all masks are one-padded for better hardware efficiency. 902 */ 903 static void gfar_set_attribute(u32 value, u32 mask, u32 flag, 904 struct filer_table *tab) 905 { 906 switch (flag) { 907 /* 3bit */ 908 case RQFCR_PID_PRI: 909 if (!(value | mask)) 910 return; 911 mask |= RQFCR_PID_PRI_MASK; 912 break; 913 /* 8bit */ 914 case RQFCR_PID_L4P: 915 case RQFCR_PID_TOS: 916 if (!~(mask | RQFCR_PID_L4P_MASK)) 917 return; 918 if (!mask) 919 mask = ~0; 920 else 921 mask |= RQFCR_PID_L4P_MASK; 922 break; 923 /* 12bit */ 924 case RQFCR_PID_VID: 925 if (!(value | mask)) 926 return; 927 mask |= RQFCR_PID_VID_MASK; 928 break; 929 /* 16bit */ 930 case RQFCR_PID_DPT: 931 case RQFCR_PID_SPT: 932 case RQFCR_PID_ETY: 933 if (!~(mask | RQFCR_PID_PORT_MASK)) 934 return; 935 if (!mask) 936 mask = ~0; 937 else 938 mask |= RQFCR_PID_PORT_MASK; 939 break; 940 /* 24bit */ 941 case RQFCR_PID_DAH: 942 case RQFCR_PID_DAL: 943 case RQFCR_PID_SAH: 944 case RQFCR_PID_SAL: 945 if (!(value | mask)) 946 return; 947 mask |= RQFCR_PID_MAC_MASK; 948 break; 949 /* for all real 32bit masks */ 950 default: 951 if (!~mask) 952 return; 953 if (!mask) 954 mask = ~0; 955 break; 956 } 957 gfar_set_general_attribute(value, mask, flag, tab); 958 } 959 960 /* Translates value and mask for UDP, TCP or SCTP */ 961 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value, 962 struct ethtool_tcpip4_spec *mask, struct filer_table *tab) 963 { 964 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab); 965 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab); 966 gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab); 967 gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab); 968 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); 969 } 970 971 /* Translates value and mask for RAW-IP4 */ 972 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value, 973 struct ethtool_usrip4_spec *mask, struct filer_table *tab) 974 { 975 gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab); 976 gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab); 977 gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); 978 gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab); 979 gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB, 980 tab); 981 982 } 983 984 /* Translates value and mask for ETHER spec */ 985 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask, 986 struct filer_table *tab) 987 { 988 u32 upper_temp_mask = 0; 989 u32 lower_temp_mask = 0; 990 /* Source address */ 991 if (!is_broadcast_ether_addr(mask->h_source)) { 992 993 if (is_zero_ether_addr(mask->h_source)) { 994 upper_temp_mask = 0xFFFFFFFF; 995 lower_temp_mask = 0xFFFFFFFF; 996 } else { 997 upper_temp_mask = mask->h_source[0] << 16 998 | mask->h_source[1] << 8 999 | mask->h_source[2]; 1000 lower_temp_mask = mask->h_source[3] << 16 1001 | mask->h_source[4] << 8 1002 | mask->h_source[5]; 1003 } 1004 /* Upper 24bit */ 1005 gfar_set_attribute( 1006 value->h_source[0] << 16 | value->h_source[1] 1007 << 8 | value->h_source[2], 1008 upper_temp_mask, RQFCR_PID_SAH, tab); 1009 /* And the same for the lower part */ 1010 gfar_set_attribute( 1011 value->h_source[3] << 16 | value->h_source[4] 1012 << 8 | value->h_source[5], 1013 lower_temp_mask, RQFCR_PID_SAL, tab); 1014 } 1015 /* Destination address */ 1016 if (!is_broadcast_ether_addr(mask->h_dest)) { 1017 1018 /* Special for destination is limited broadcast */ 1019 if ((is_broadcast_ether_addr(value->h_dest) 1020 && is_zero_ether_addr(mask->h_dest))) { 1021 gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab); 1022 } else { 1023 1024 if (is_zero_ether_addr(mask->h_dest)) { 1025 upper_temp_mask = 0xFFFFFFFF; 1026 lower_temp_mask = 0xFFFFFFFF; 1027 } else { 1028 upper_temp_mask = mask->h_dest[0] << 16 1029 | mask->h_dest[1] << 8 1030 | mask->h_dest[2]; 1031 lower_temp_mask = mask->h_dest[3] << 16 1032 | mask->h_dest[4] << 8 1033 | mask->h_dest[5]; 1034 } 1035 1036 /* Upper 24bit */ 1037 gfar_set_attribute( 1038 value->h_dest[0] << 16 1039 | value->h_dest[1] << 8 1040 | value->h_dest[2], 1041 upper_temp_mask, RQFCR_PID_DAH, tab); 1042 /* And the same for the lower part */ 1043 gfar_set_attribute( 1044 value->h_dest[3] << 16 1045 | value->h_dest[4] << 8 1046 | value->h_dest[5], 1047 lower_temp_mask, RQFCR_PID_DAL, tab); 1048 } 1049 } 1050 1051 gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab); 1052 1053 } 1054 1055 /* Convert a rule to binary filter format of gianfar */ 1056 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule, 1057 struct filer_table *tab) 1058 { 1059 u32 vlan = 0, vlan_mask = 0; 1060 u32 id = 0, id_mask = 0; 1061 u32 cfi = 0, cfi_mask = 0; 1062 u32 prio = 0, prio_mask = 0; 1063 1064 u32 old_index = tab->index; 1065 1066 /* Check if vlan is wanted */ 1067 if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) { 1068 if (!rule->m_ext.vlan_tci) 1069 rule->m_ext.vlan_tci = 0xFFFF; 1070 1071 vlan = RQFPR_VLN; 1072 vlan_mask = RQFPR_VLN; 1073 1074 /* Separate the fields */ 1075 id = rule->h_ext.vlan_tci & VLAN_VID_MASK; 1076 id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK; 1077 cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK; 1078 cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK; 1079 prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; 1080 prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; 1081 1082 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) { 1083 vlan |= RQFPR_CFI; 1084 vlan_mask |= RQFPR_CFI; 1085 } else if (cfi != VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) { 1086 vlan_mask |= RQFPR_CFI; 1087 } 1088 } 1089 1090 switch (rule->flow_type & ~FLOW_EXT) { 1091 case TCP_V4_FLOW: 1092 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan, 1093 RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab); 1094 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec, 1095 &rule->m_u.tcp_ip4_spec, tab); 1096 break; 1097 case UDP_V4_FLOW: 1098 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan, 1099 RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab); 1100 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec, 1101 &rule->m_u.udp_ip4_spec, tab); 1102 break; 1103 case SCTP_V4_FLOW: 1104 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, 1105 tab); 1106 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab); 1107 gfar_set_basic_ip((struct ethtool_tcpip4_spec *) &rule->h_u, 1108 (struct ethtool_tcpip4_spec *) &rule->m_u, tab); 1109 break; 1110 case IP_USER_FLOW: 1111 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, 1112 tab); 1113 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u, 1114 (struct ethtool_usrip4_spec *) &rule->m_u, tab); 1115 break; 1116 case ETHER_FLOW: 1117 if (vlan) 1118 gfar_set_parse_bits(vlan, vlan_mask, tab); 1119 gfar_set_ether((struct ethhdr *) &rule->h_u, 1120 (struct ethhdr *) &rule->m_u, tab); 1121 break; 1122 default: 1123 return -1; 1124 } 1125 1126 /* Set the vlan attributes in the end */ 1127 if (vlan) { 1128 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab); 1129 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab); 1130 } 1131 1132 /* If there has been nothing written till now, it must be a default */ 1133 if (tab->index == old_index) { 1134 gfar_set_mask(0xFFFFFFFF, tab); 1135 tab->fe[tab->index].ctrl = 0x20; 1136 tab->fe[tab->index].prop = 0x0; 1137 tab->index++; 1138 } 1139 1140 /* Remove last AND */ 1141 tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND); 1142 1143 /* Specify which queue to use or to drop */ 1144 if (rule->ring_cookie == RX_CLS_FLOW_DISC) 1145 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE; 1146 else 1147 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10); 1148 1149 /* Only big enough entries can be clustered */ 1150 if (tab->index > (old_index + 2)) { 1151 tab->fe[old_index + 1].ctrl |= RQFCR_CLE; 1152 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE; 1153 } 1154 1155 /* In rare cases the cache can be full while there is free space in hw */ 1156 if (tab->index > MAX_FILER_CACHE_IDX - 1) 1157 return -EBUSY; 1158 1159 return 0; 1160 } 1161 1162 /* Copy size filer entries */ 1163 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0], 1164 struct gfar_filer_entry src[0], s32 size) 1165 { 1166 while (size > 0) { 1167 size--; 1168 dst[size].ctrl = src[size].ctrl; 1169 dst[size].prop = src[size].prop; 1170 } 1171 } 1172 1173 /* Delete the contents of the filer-table between start and end 1174 * and collapse them */ 1175 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab) 1176 { 1177 int length; 1178 if (end > MAX_FILER_CACHE_IDX || end < begin) 1179 return -EINVAL; 1180 1181 end++; 1182 length = end - begin; 1183 1184 /* Copy */ 1185 while (end < tab->index) { 1186 tab->fe[begin].ctrl = tab->fe[end].ctrl; 1187 tab->fe[begin++].prop = tab->fe[end++].prop; 1188 1189 } 1190 /* Fill up with don't cares */ 1191 while (begin < tab->index) { 1192 tab->fe[begin].ctrl = 0x60; 1193 tab->fe[begin].prop = 0xFFFFFFFF; 1194 begin++; 1195 } 1196 1197 tab->index -= length; 1198 return 0; 1199 } 1200 1201 /* Make space on the wanted location */ 1202 static int gfar_expand_filer_entries(u32 begin, u32 length, 1203 struct filer_table *tab) 1204 { 1205 if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX || begin 1206 > MAX_FILER_CACHE_IDX) 1207 return -EINVAL; 1208 1209 gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]), 1210 tab->index - length + 1); 1211 1212 tab->index += length; 1213 return 0; 1214 } 1215 1216 static int gfar_get_next_cluster_start(int start, struct filer_table *tab) 1217 { 1218 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) { 1219 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) 1220 == (RQFCR_AND | RQFCR_CLE)) 1221 return start; 1222 } 1223 return -1; 1224 } 1225 1226 static int gfar_get_next_cluster_end(int start, struct filer_table *tab) 1227 { 1228 for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) { 1229 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) 1230 == (RQFCR_CLE)) 1231 return start; 1232 } 1233 return -1; 1234 } 1235 1236 /* 1237 * Uses hardwares clustering option to reduce 1238 * the number of filer table entries 1239 */ 1240 static void gfar_cluster_filer(struct filer_table *tab) 1241 { 1242 s32 i = -1, j, iend, jend; 1243 1244 while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) { 1245 j = i; 1246 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) { 1247 /* 1248 * The cluster entries self and the previous one 1249 * (a mask) must be identical! 1250 */ 1251 if (tab->fe[i].ctrl != tab->fe[j].ctrl) 1252 break; 1253 if (tab->fe[i].prop != tab->fe[j].prop) 1254 break; 1255 if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl) 1256 break; 1257 if (tab->fe[i - 1].prop != tab->fe[j - 1].prop) 1258 break; 1259 iend = gfar_get_next_cluster_end(i, tab); 1260 jend = gfar_get_next_cluster_end(j, tab); 1261 if (jend == -1 || iend == -1) 1262 break; 1263 /* 1264 * First we make some free space, where our cluster 1265 * element should be. Then we copy it there and finally 1266 * delete in from its old location. 1267 */ 1268 1269 if (gfar_expand_filer_entries(iend, (jend - j), tab) 1270 == -EINVAL) 1271 break; 1272 1273 gfar_copy_filer_entries(&(tab->fe[iend + 1]), 1274 &(tab->fe[jend + 1]), jend - j); 1275 1276 if (gfar_trim_filer_entries(jend - 1, 1277 jend + (jend - j), tab) == -EINVAL) 1278 return; 1279 1280 /* Mask out cluster bit */ 1281 tab->fe[iend].ctrl &= ~(RQFCR_CLE); 1282 } 1283 } 1284 } 1285 1286 /* Swaps the masked bits of a1<>a2 and b1<>b2 */ 1287 static void gfar_swap_bits(struct gfar_filer_entry *a1, 1288 struct gfar_filer_entry *a2, struct gfar_filer_entry *b1, 1289 struct gfar_filer_entry *b2, u32 mask) 1290 { 1291 u32 temp[4]; 1292 temp[0] = a1->ctrl & mask; 1293 temp[1] = a2->ctrl & mask; 1294 temp[2] = b1->ctrl & mask; 1295 temp[3] = b2->ctrl & mask; 1296 1297 a1->ctrl &= ~mask; 1298 a2->ctrl &= ~mask; 1299 b1->ctrl &= ~mask; 1300 b2->ctrl &= ~mask; 1301 1302 a1->ctrl |= temp[1]; 1303 a2->ctrl |= temp[0]; 1304 b1->ctrl |= temp[3]; 1305 b2->ctrl |= temp[2]; 1306 } 1307 1308 /* 1309 * Generate a list consisting of masks values with their start and 1310 * end of validity and block as indicator for parts belonging 1311 * together (glued by ANDs) in mask_table 1312 */ 1313 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table, 1314 struct filer_table *tab) 1315 { 1316 u32 i, and_index = 0, block_index = 1; 1317 1318 for (i = 0; i < tab->index; i++) { 1319 1320 /* LSByte of control = 0 sets a mask */ 1321 if (!(tab->fe[i].ctrl & 0xF)) { 1322 mask_table[and_index].mask = tab->fe[i].prop; 1323 mask_table[and_index].start = i; 1324 mask_table[and_index].block = block_index; 1325 if (and_index >= 1) 1326 mask_table[and_index - 1].end = i - 1; 1327 and_index++; 1328 } 1329 /* cluster starts and ends will be separated because they should 1330 * hold their position */ 1331 if (tab->fe[i].ctrl & RQFCR_CLE) 1332 block_index++; 1333 /* A not set AND indicates the end of a depended block */ 1334 if (!(tab->fe[i].ctrl & RQFCR_AND)) 1335 block_index++; 1336 1337 } 1338 1339 mask_table[and_index - 1].end = i - 1; 1340 1341 return and_index; 1342 } 1343 1344 /* 1345 * Sorts the entries of mask_table by the values of the masks. 1346 * Important: The 0xFF80 flags of the first and last entry of a 1347 * block must hold their position (which queue, CLusterEnable, ReJEct, 1348 * AND) 1349 */ 1350 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table, 1351 struct filer_table *temp_table, u32 and_index) 1352 { 1353 /* Pointer to compare function (_asc or _desc) */ 1354 int (*gfar_comp)(const void *, const void *); 1355 1356 u32 i, size = 0, start = 0, prev = 1; 1357 u32 old_first, old_last, new_first, new_last; 1358 1359 gfar_comp = &gfar_comp_desc; 1360 1361 for (i = 0; i < and_index; i++) { 1362 1363 if (prev != mask_table[i].block) { 1364 old_first = mask_table[start].start + 1; 1365 old_last = mask_table[i - 1].end; 1366 sort(mask_table + start, size, 1367 sizeof(struct gfar_mask_entry), 1368 gfar_comp, &gfar_swap); 1369 1370 /* Toggle order for every block. This makes the 1371 * thing more efficient! */ 1372 if (gfar_comp == gfar_comp_desc) 1373 gfar_comp = &gfar_comp_asc; 1374 else 1375 gfar_comp = &gfar_comp_desc; 1376 1377 new_first = mask_table[start].start + 1; 1378 new_last = mask_table[i - 1].end; 1379 1380 gfar_swap_bits(&temp_table->fe[new_first], 1381 &temp_table->fe[old_first], 1382 &temp_table->fe[new_last], 1383 &temp_table->fe[old_last], 1384 RQFCR_QUEUE | RQFCR_CLE | 1385 RQFCR_RJE | RQFCR_AND 1386 ); 1387 1388 start = i; 1389 size = 0; 1390 } 1391 size++; 1392 prev = mask_table[i].block; 1393 } 1394 1395 } 1396 1397 /* 1398 * Reduces the number of masks needed in the filer table to save entries 1399 * This is done by sorting the masks of a depended block. A depended block is 1400 * identified by gluing ANDs or CLE. The sorting order toggles after every 1401 * block. Of course entries in scope of a mask must change their location with 1402 * it. 1403 */ 1404 static int gfar_optimize_filer_masks(struct filer_table *tab) 1405 { 1406 struct filer_table *temp_table; 1407 struct gfar_mask_entry *mask_table; 1408 1409 u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0; 1410 s32 ret = 0; 1411 1412 /* We need a copy of the filer table because 1413 * we want to change its order */ 1414 temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL); 1415 if (temp_table == NULL) 1416 return -ENOMEM; 1417 1418 mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1, 1419 sizeof(struct gfar_mask_entry), GFP_KERNEL); 1420 1421 if (mask_table == NULL) { 1422 ret = -ENOMEM; 1423 goto end; 1424 } 1425 1426 and_index = gfar_generate_mask_table(mask_table, tab); 1427 1428 gfar_sort_mask_table(mask_table, temp_table, and_index); 1429 1430 /* Now we can copy the data from our duplicated filer table to 1431 * the real one in the order the mask table says */ 1432 for (i = 0; i < and_index; i++) { 1433 size = mask_table[i].end - mask_table[i].start + 1; 1434 gfar_copy_filer_entries(&(tab->fe[j]), 1435 &(temp_table->fe[mask_table[i].start]), size); 1436 j += size; 1437 } 1438 1439 /* And finally we just have to check for duplicated masks and drop the 1440 * second ones */ 1441 for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) { 1442 if (tab->fe[i].ctrl == 0x80) { 1443 previous_mask = i++; 1444 break; 1445 } 1446 } 1447 for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) { 1448 if (tab->fe[i].ctrl == 0x80) { 1449 if (tab->fe[i].prop == tab->fe[previous_mask].prop) { 1450 /* Two identical ones found! 1451 * So drop the second one! */ 1452 gfar_trim_filer_entries(i, i, tab); 1453 } else 1454 /* Not identical! */ 1455 previous_mask = i; 1456 } 1457 } 1458 1459 kfree(mask_table); 1460 end: kfree(temp_table); 1461 return ret; 1462 } 1463 1464 /* Write the bit-pattern from software's buffer to hardware registers */ 1465 static int gfar_write_filer_table(struct gfar_private *priv, 1466 struct filer_table *tab) 1467 { 1468 u32 i = 0; 1469 if (tab->index > MAX_FILER_IDX - 1) 1470 return -EBUSY; 1471 1472 /* Avoid inconsistent filer table to be processed */ 1473 lock_rx_qs(priv); 1474 1475 /* Fill regular entries */ 1476 for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl); i++) 1477 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop); 1478 /* Fill the rest with fall-troughs */ 1479 for (; i < MAX_FILER_IDX - 1; i++) 1480 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF); 1481 /* Last entry must be default accept 1482 * because that's what people expect */ 1483 gfar_write_filer(priv, i, 0x20, 0x0); 1484 1485 unlock_rx_qs(priv); 1486 1487 return 0; 1488 } 1489 1490 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow, 1491 struct gfar_private *priv) 1492 { 1493 1494 if (flow->flow_type & FLOW_EXT) { 1495 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1]) 1496 netdev_warn(priv->ndev, 1497 "User-specific data not supported!\n"); 1498 if (~flow->m_ext.vlan_etype) 1499 netdev_warn(priv->ndev, 1500 "VLAN-etype not supported!\n"); 1501 } 1502 if (flow->flow_type == IP_USER_FLOW) 1503 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4) 1504 netdev_warn(priv->ndev, 1505 "IP-Version differing from IPv4 not supported!\n"); 1506 1507 return 0; 1508 } 1509 1510 static int gfar_process_filer_changes(struct gfar_private *priv) 1511 { 1512 struct ethtool_flow_spec_container *j; 1513 struct filer_table *tab; 1514 s32 i = 0; 1515 s32 ret = 0; 1516 1517 /* So index is set to zero, too! */ 1518 tab = kzalloc(sizeof(*tab), GFP_KERNEL); 1519 if (tab == NULL) 1520 return -ENOMEM; 1521 1522 /* Now convert the existing filer data from flow_spec into 1523 * filer tables binary format */ 1524 list_for_each_entry(j, &priv->rx_list.list, list) { 1525 ret = gfar_convert_to_filer(&j->fs, tab); 1526 if (ret == -EBUSY) { 1527 netdev_err(priv->ndev, "Rule not added: No free space!\n"); 1528 goto end; 1529 } 1530 if (ret == -1) { 1531 netdev_err(priv->ndev, "Rule not added: Unsupported Flow-type!\n"); 1532 goto end; 1533 } 1534 } 1535 1536 i = tab->index; 1537 1538 /* Optimizations to save entries */ 1539 gfar_cluster_filer(tab); 1540 gfar_optimize_filer_masks(tab); 1541 1542 pr_debug("\n\tSummary:\n" 1543 "\tData on hardware: %d\n" 1544 "\tCompression rate: %d%%\n", 1545 tab->index, 100 - (100 * tab->index) / i); 1546 1547 /* Write everything to hardware */ 1548 ret = gfar_write_filer_table(priv, tab); 1549 if (ret == -EBUSY) { 1550 netdev_err(priv->ndev, "Rule not added: No free space!\n"); 1551 goto end; 1552 } 1553 1554 end: kfree(tab); 1555 return ret; 1556 } 1557 1558 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow) 1559 { 1560 u32 i = 0; 1561 1562 for (i = 0; i < sizeof(flow->m_u); i++) 1563 flow->m_u.hdata[i] ^= 0xFF; 1564 1565 flow->m_ext.vlan_etype ^= 0xFFFF; 1566 flow->m_ext.vlan_tci ^= 0xFFFF; 1567 flow->m_ext.data[0] ^= ~0; 1568 flow->m_ext.data[1] ^= ~0; 1569 } 1570 1571 static int gfar_add_cls(struct gfar_private *priv, 1572 struct ethtool_rx_flow_spec *flow) 1573 { 1574 struct ethtool_flow_spec_container *temp, *comp; 1575 int ret = 0; 1576 1577 temp = kmalloc(sizeof(*temp), GFP_KERNEL); 1578 if (temp == NULL) 1579 return -ENOMEM; 1580 memcpy(&temp->fs, flow, sizeof(temp->fs)); 1581 1582 gfar_invert_masks(&temp->fs); 1583 ret = gfar_check_capability(&temp->fs, priv); 1584 if (ret) 1585 goto clean_mem; 1586 /* Link in the new element at the right @location */ 1587 if (list_empty(&priv->rx_list.list)) { 1588 ret = gfar_check_filer_hardware(priv); 1589 if (ret != 0) 1590 goto clean_mem; 1591 list_add(&temp->list, &priv->rx_list.list); 1592 goto process; 1593 } else { 1594 1595 list_for_each_entry(comp, &priv->rx_list.list, list) { 1596 if (comp->fs.location > flow->location) { 1597 list_add_tail(&temp->list, &comp->list); 1598 goto process; 1599 } 1600 if (comp->fs.location == flow->location) { 1601 netdev_err(priv->ndev, 1602 "Rule not added: ID %d not free!\n", 1603 flow->location); 1604 ret = -EBUSY; 1605 goto clean_mem; 1606 } 1607 } 1608 list_add_tail(&temp->list, &priv->rx_list.list); 1609 } 1610 1611 process: 1612 ret = gfar_process_filer_changes(priv); 1613 if (ret) 1614 goto clean_list; 1615 priv->rx_list.count++; 1616 return ret; 1617 1618 clean_list: 1619 list_del(&temp->list); 1620 clean_mem: 1621 kfree(temp); 1622 return ret; 1623 } 1624 1625 static int gfar_del_cls(struct gfar_private *priv, u32 loc) 1626 { 1627 struct ethtool_flow_spec_container *comp; 1628 u32 ret = -EINVAL; 1629 1630 if (list_empty(&priv->rx_list.list)) 1631 return ret; 1632 1633 list_for_each_entry(comp, &priv->rx_list.list, list) { 1634 if (comp->fs.location == loc) { 1635 list_del(&comp->list); 1636 kfree(comp); 1637 priv->rx_list.count--; 1638 gfar_process_filer_changes(priv); 1639 ret = 0; 1640 break; 1641 } 1642 } 1643 1644 return ret; 1645 1646 } 1647 1648 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd) 1649 { 1650 struct ethtool_flow_spec_container *comp; 1651 u32 ret = -EINVAL; 1652 1653 list_for_each_entry(comp, &priv->rx_list.list, list) { 1654 if (comp->fs.location == cmd->fs.location) { 1655 memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs)); 1656 gfar_invert_masks(&cmd->fs); 1657 ret = 0; 1658 break; 1659 } 1660 } 1661 1662 return ret; 1663 } 1664 1665 static int gfar_get_cls_all(struct gfar_private *priv, 1666 struct ethtool_rxnfc *cmd, u32 *rule_locs) 1667 { 1668 struct ethtool_flow_spec_container *comp; 1669 u32 i = 0; 1670 1671 list_for_each_entry(comp, &priv->rx_list.list, list) { 1672 if (i == cmd->rule_cnt) 1673 return -EMSGSIZE; 1674 rule_locs[i] = comp->fs.location; 1675 i++; 1676 } 1677 1678 cmd->data = MAX_FILER_IDX; 1679 cmd->rule_cnt = i; 1680 1681 return 0; 1682 } 1683 1684 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 1685 { 1686 struct gfar_private *priv = netdev_priv(dev); 1687 int ret = 0; 1688 1689 mutex_lock(&priv->rx_queue_access); 1690 1691 switch (cmd->cmd) { 1692 case ETHTOOL_SRXFH: 1693 ret = gfar_set_hash_opts(priv, cmd); 1694 break; 1695 case ETHTOOL_SRXCLSRLINS: 1696 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC && 1697 cmd->fs.ring_cookie >= priv->num_rx_queues) || 1698 cmd->fs.location >= MAX_FILER_IDX) { 1699 ret = -EINVAL; 1700 break; 1701 } 1702 ret = gfar_add_cls(priv, &cmd->fs); 1703 break; 1704 case ETHTOOL_SRXCLSRLDEL: 1705 ret = gfar_del_cls(priv, cmd->fs.location); 1706 break; 1707 default: 1708 ret = -EINVAL; 1709 } 1710 1711 mutex_unlock(&priv->rx_queue_access); 1712 1713 return ret; 1714 } 1715 1716 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 1717 u32 *rule_locs) 1718 { 1719 struct gfar_private *priv = netdev_priv(dev); 1720 int ret = 0; 1721 1722 switch (cmd->cmd) { 1723 case ETHTOOL_GRXRINGS: 1724 cmd->data = priv->num_rx_queues; 1725 break; 1726 case ETHTOOL_GRXCLSRLCNT: 1727 cmd->rule_cnt = priv->rx_list.count; 1728 break; 1729 case ETHTOOL_GRXCLSRULE: 1730 ret = gfar_get_cls(priv, cmd); 1731 break; 1732 case ETHTOOL_GRXCLSRLALL: 1733 ret = gfar_get_cls_all(priv, cmd, rule_locs); 1734 break; 1735 default: 1736 ret = -EINVAL; 1737 break; 1738 } 1739 1740 return ret; 1741 } 1742 1743 int gfar_phc_index = -1; 1744 1745 static int gfar_get_ts_info(struct net_device *dev, 1746 struct ethtool_ts_info *info) 1747 { 1748 struct gfar_private *priv = netdev_priv(dev); 1749 1750 if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) { 1751 info->so_timestamping = 1752 SOF_TIMESTAMPING_RX_SOFTWARE | 1753 SOF_TIMESTAMPING_SOFTWARE; 1754 info->phc_index = -1; 1755 return 0; 1756 } 1757 info->so_timestamping = 1758 SOF_TIMESTAMPING_TX_HARDWARE | 1759 SOF_TIMESTAMPING_RX_HARDWARE | 1760 SOF_TIMESTAMPING_RAW_HARDWARE; 1761 info->phc_index = gfar_phc_index; 1762 info->tx_types = 1763 (1 << HWTSTAMP_TX_OFF) | 1764 (1 << HWTSTAMP_TX_ON); 1765 info->rx_filters = 1766 (1 << HWTSTAMP_FILTER_NONE) | 1767 (1 << HWTSTAMP_FILTER_ALL); 1768 return 0; 1769 } 1770 1771 const struct ethtool_ops gfar_ethtool_ops = { 1772 .get_settings = gfar_gsettings, 1773 .set_settings = gfar_ssettings, 1774 .get_drvinfo = gfar_gdrvinfo, 1775 .get_regs_len = gfar_reglen, 1776 .get_regs = gfar_get_regs, 1777 .get_link = ethtool_op_get_link, 1778 .get_coalesce = gfar_gcoalesce, 1779 .set_coalesce = gfar_scoalesce, 1780 .get_ringparam = gfar_gringparam, 1781 .set_ringparam = gfar_sringparam, 1782 .get_strings = gfar_gstrings, 1783 .get_sset_count = gfar_sset_count, 1784 .get_ethtool_stats = gfar_fill_stats, 1785 .get_msglevel = gfar_get_msglevel, 1786 .set_msglevel = gfar_set_msglevel, 1787 #ifdef CONFIG_PM 1788 .get_wol = gfar_get_wol, 1789 .set_wol = gfar_set_wol, 1790 #endif 1791 .set_rxnfc = gfar_set_nfc, 1792 .get_rxnfc = gfar_get_nfc, 1793 .get_ts_info = gfar_get_ts_info, 1794 }; 1795