1 /* 2 * Copyright 2008-2015 Freescale Semiconductor Inc. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * * Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * * Redistributions in binary form must reproduce the above copyright 9 * notice, this list of conditions and the following disclaimer in the 10 * documentation and/or other materials provided with the distribution. 11 * * Neither the name of Freescale Semiconductor nor the 12 * names of its contributors may be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * 16 * ALTERNATIVELY, this software may be distributed under the terms of the 17 * GNU General Public License ("GPL") as published by the Free Software 18 * Foundation, either version 2 of that License or (at your option) any 19 * later version. 20 * 21 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY 22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 34 35 #include "fman_tgec.h" 36 #include "fman.h" 37 38 #include <linux/slab.h> 39 #include <linux/bitrev.h> 40 #include <linux/io.h> 41 #include <linux/crc32.h> 42 43 /* Transmit Inter-Packet Gap Length Register (TX_IPG_LENGTH) */ 44 #define TGEC_TX_IPG_LENGTH_MASK 0x000003ff 45 46 /* Command and Configuration Register (COMMAND_CONFIG) */ 47 #define CMD_CFG_EN_TIMESTAMP 0x00100000 48 #define CMD_CFG_NO_LEN_CHK 0x00020000 49 #define CMD_CFG_PAUSE_IGNORE 0x00000100 50 #define CMF_CFG_CRC_FWD 0x00000040 51 #define CMD_CFG_PROMIS_EN 0x00000010 52 #define CMD_CFG_RX_EN 0x00000002 53 #define CMD_CFG_TX_EN 0x00000001 54 55 /* Interrupt Mask Register (IMASK) */ 56 #define TGEC_IMASK_MDIO_SCAN_EVENT 0x00010000 57 #define TGEC_IMASK_MDIO_CMD_CMPL 0x00008000 58 #define TGEC_IMASK_REM_FAULT 0x00004000 59 #define TGEC_IMASK_LOC_FAULT 0x00002000 60 #define TGEC_IMASK_TX_ECC_ER 0x00001000 61 #define TGEC_IMASK_TX_FIFO_UNFL 0x00000800 62 #define TGEC_IMASK_TX_FIFO_OVFL 0x00000400 63 #define TGEC_IMASK_TX_ER 0x00000200 64 #define TGEC_IMASK_RX_FIFO_OVFL 0x00000100 65 #define TGEC_IMASK_RX_ECC_ER 0x00000080 66 #define TGEC_IMASK_RX_JAB_FRM 0x00000040 67 #define TGEC_IMASK_RX_OVRSZ_FRM 0x00000020 68 #define TGEC_IMASK_RX_RUNT_FRM 0x00000010 69 #define TGEC_IMASK_RX_FRAG_FRM 0x00000008 70 #define TGEC_IMASK_RX_LEN_ER 0x00000004 71 #define TGEC_IMASK_RX_CRC_ER 0x00000002 72 #define TGEC_IMASK_RX_ALIGN_ER 0x00000001 73 74 /* Hashtable Control Register (HASHTABLE_CTRL) */ 75 #define TGEC_HASH_MCAST_SHIFT 23 76 #define TGEC_HASH_MCAST_EN 0x00000200 77 #define TGEC_HASH_ADR_MSK 0x000001ff 78 79 #define DEFAULT_TX_IPG_LENGTH 12 80 #define DEFAULT_MAX_FRAME_LENGTH 0x600 81 #define DEFAULT_PAUSE_QUANT 0xf000 82 83 /* number of pattern match registers (entries) */ 84 #define TGEC_NUM_OF_PADDRS 1 85 86 /* Group address bit indication */ 87 #define GROUP_ADDRESS 0x0000010000000000LL 88 89 /* Hash table size (= 32 bits*8 regs) */ 90 #define TGEC_HASH_TABLE_SIZE 512 91 92 /* tGEC memory map */ 93 struct tgec_regs { 94 u32 tgec_id; /* 0x000 Controller ID */ 95 u32 reserved001[1]; /* 0x004 */ 96 u32 command_config; /* 0x008 Control and configuration */ 97 u32 mac_addr_0; /* 0x00c Lower 32 bits of the MAC adr */ 98 u32 mac_addr_1; /* 0x010 Upper 16 bits of the MAC adr */ 99 u32 maxfrm; /* 0x014 Maximum frame length */ 100 u32 pause_quant; /* 0x018 Pause quanta */ 101 u32 rx_fifo_sections; /* 0x01c */ 102 u32 tx_fifo_sections; /* 0x020 */ 103 u32 rx_fifo_almost_f_e; /* 0x024 */ 104 u32 tx_fifo_almost_f_e; /* 0x028 */ 105 u32 hashtable_ctrl; /* 0x02c Hash table control */ 106 u32 mdio_cfg_status; /* 0x030 */ 107 u32 mdio_command; /* 0x034 */ 108 u32 mdio_data; /* 0x038 */ 109 u32 mdio_regaddr; /* 0x03c */ 110 u32 status; /* 0x040 */ 111 u32 tx_ipg_len; /* 0x044 Transmitter inter-packet-gap */ 112 u32 mac_addr_2; /* 0x048 Lower 32 bits of 2nd MAC adr */ 113 u32 mac_addr_3; /* 0x04c Upper 16 bits of 2nd MAC adr */ 114 u32 rx_fifo_ptr_rd; /* 0x050 */ 115 u32 rx_fifo_ptr_wr; /* 0x054 */ 116 u32 tx_fifo_ptr_rd; /* 0x058 */ 117 u32 tx_fifo_ptr_wr; /* 0x05c */ 118 u32 imask; /* 0x060 Interrupt mask */ 119 u32 ievent; /* 0x064 Interrupt event */ 120 u32 udp_port; /* 0x068 Defines a UDP Port number */ 121 u32 type_1588v2; /* 0x06c Type field for 1588v2 */ 122 u32 reserved070[4]; /* 0x070 */ 123 /* 10Ge Statistics Counter */ 124 u32 tfrm_u; /* 80 aFramesTransmittedOK */ 125 u32 tfrm_l; /* 84 aFramesTransmittedOK */ 126 u32 rfrm_u; /* 88 aFramesReceivedOK */ 127 u32 rfrm_l; /* 8c aFramesReceivedOK */ 128 u32 rfcs_u; /* 90 aFrameCheckSequenceErrors */ 129 u32 rfcs_l; /* 94 aFrameCheckSequenceErrors */ 130 u32 raln_u; /* 98 aAlignmentErrors */ 131 u32 raln_l; /* 9c aAlignmentErrors */ 132 u32 txpf_u; /* A0 aPAUSEMACCtrlFramesTransmitted */ 133 u32 txpf_l; /* A4 aPAUSEMACCtrlFramesTransmitted */ 134 u32 rxpf_u; /* A8 aPAUSEMACCtrlFramesReceived */ 135 u32 rxpf_l; /* Ac aPAUSEMACCtrlFramesReceived */ 136 u32 rlong_u; /* B0 aFrameTooLongErrors */ 137 u32 rlong_l; /* B4 aFrameTooLongErrors */ 138 u32 rflr_u; /* B8 aInRangeLengthErrors */ 139 u32 rflr_l; /* Bc aInRangeLengthErrors */ 140 u32 tvlan_u; /* C0 VLANTransmittedOK */ 141 u32 tvlan_l; /* C4 VLANTransmittedOK */ 142 u32 rvlan_u; /* C8 VLANReceivedOK */ 143 u32 rvlan_l; /* Cc VLANReceivedOK */ 144 u32 toct_u; /* D0 if_out_octets */ 145 u32 toct_l; /* D4 if_out_octets */ 146 u32 roct_u; /* D8 if_in_octets */ 147 u32 roct_l; /* Dc if_in_octets */ 148 u32 ruca_u; /* E0 if_in_ucast_pkts */ 149 u32 ruca_l; /* E4 if_in_ucast_pkts */ 150 u32 rmca_u; /* E8 ifInMulticastPkts */ 151 u32 rmca_l; /* Ec ifInMulticastPkts */ 152 u32 rbca_u; /* F0 ifInBroadcastPkts */ 153 u32 rbca_l; /* F4 ifInBroadcastPkts */ 154 u32 terr_u; /* F8 if_out_errors */ 155 u32 terr_l; /* Fc if_out_errors */ 156 u32 reserved100[2]; /* 100-108 */ 157 u32 tuca_u; /* 108 if_out_ucast_pkts */ 158 u32 tuca_l; /* 10c if_out_ucast_pkts */ 159 u32 tmca_u; /* 110 ifOutMulticastPkts */ 160 u32 tmca_l; /* 114 ifOutMulticastPkts */ 161 u32 tbca_u; /* 118 ifOutBroadcastPkts */ 162 u32 tbca_l; /* 11c ifOutBroadcastPkts */ 163 u32 rdrp_u; /* 120 etherStatsDropEvents */ 164 u32 rdrp_l; /* 124 etherStatsDropEvents */ 165 u32 reoct_u; /* 128 etherStatsOctets */ 166 u32 reoct_l; /* 12c etherStatsOctets */ 167 u32 rpkt_u; /* 130 etherStatsPkts */ 168 u32 rpkt_l; /* 134 etherStatsPkts */ 169 u32 trund_u; /* 138 etherStatsUndersizePkts */ 170 u32 trund_l; /* 13c etherStatsUndersizePkts */ 171 u32 r64_u; /* 140 etherStatsPkts64Octets */ 172 u32 r64_l; /* 144 etherStatsPkts64Octets */ 173 u32 r127_u; /* 148 etherStatsPkts65to127Octets */ 174 u32 r127_l; /* 14c etherStatsPkts65to127Octets */ 175 u32 r255_u; /* 150 etherStatsPkts128to255Octets */ 176 u32 r255_l; /* 154 etherStatsPkts128to255Octets */ 177 u32 r511_u; /* 158 etherStatsPkts256to511Octets */ 178 u32 r511_l; /* 15c etherStatsPkts256to511Octets */ 179 u32 r1023_u; /* 160 etherStatsPkts512to1023Octets */ 180 u32 r1023_l; /* 164 etherStatsPkts512to1023Octets */ 181 u32 r1518_u; /* 168 etherStatsPkts1024to1518Octets */ 182 u32 r1518_l; /* 16c etherStatsPkts1024to1518Octets */ 183 u32 r1519x_u; /* 170 etherStatsPkts1519toX */ 184 u32 r1519x_l; /* 174 etherStatsPkts1519toX */ 185 u32 trovr_u; /* 178 etherStatsOversizePkts */ 186 u32 trovr_l; /* 17c etherStatsOversizePkts */ 187 u32 trjbr_u; /* 180 etherStatsJabbers */ 188 u32 trjbr_l; /* 184 etherStatsJabbers */ 189 u32 trfrg_u; /* 188 etherStatsFragments */ 190 u32 trfrg_l; /* 18C etherStatsFragments */ 191 u32 rerr_u; /* 190 if_in_errors */ 192 u32 rerr_l; /* 194 if_in_errors */ 193 }; 194 195 struct tgec_cfg { 196 bool pause_ignore; 197 bool promiscuous_mode_enable; 198 u16 max_frame_length; 199 u16 pause_quant; 200 u32 tx_ipg_length; 201 }; 202 203 struct fman_mac { 204 /* Pointer to the memory mapped registers. */ 205 struct tgec_regs __iomem *regs; 206 /* MAC address of device; */ 207 u64 addr; 208 u16 max_speed; 209 void *dev_id; /* device cookie used by the exception cbs */ 210 fman_mac_exception_cb *exception_cb; 211 fman_mac_exception_cb *event_cb; 212 /* pointer to driver's global address hash table */ 213 struct eth_hash_t *multicast_addr_hash; 214 /* pointer to driver's individual address hash table */ 215 struct eth_hash_t *unicast_addr_hash; 216 u8 mac_id; 217 u32 exceptions; 218 struct tgec_cfg *cfg; 219 void *fm; 220 struct fman_rev_info fm_rev_info; 221 bool allmulti_enabled; 222 }; 223 224 static void set_mac_address(struct tgec_regs __iomem *regs, u8 *adr) 225 { 226 u32 tmp0, tmp1; 227 228 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24); 229 tmp1 = (u32)(adr[4] | adr[5] << 8); 230 iowrite32be(tmp0, ®s->mac_addr_0); 231 iowrite32be(tmp1, ®s->mac_addr_1); 232 } 233 234 static void set_dflts(struct tgec_cfg *cfg) 235 { 236 cfg->promiscuous_mode_enable = false; 237 cfg->pause_ignore = false; 238 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH; 239 cfg->max_frame_length = DEFAULT_MAX_FRAME_LENGTH; 240 cfg->pause_quant = DEFAULT_PAUSE_QUANT; 241 } 242 243 static int init(struct tgec_regs __iomem *regs, struct tgec_cfg *cfg, 244 u32 exception_mask) 245 { 246 u32 tmp; 247 248 /* Config */ 249 tmp = CMF_CFG_CRC_FWD; 250 if (cfg->promiscuous_mode_enable) 251 tmp |= CMD_CFG_PROMIS_EN; 252 if (cfg->pause_ignore) 253 tmp |= CMD_CFG_PAUSE_IGNORE; 254 /* Payload length check disable */ 255 tmp |= CMD_CFG_NO_LEN_CHK; 256 iowrite32be(tmp, ®s->command_config); 257 258 /* Max Frame Length */ 259 iowrite32be((u32)cfg->max_frame_length, ®s->maxfrm); 260 /* Pause Time */ 261 iowrite32be(cfg->pause_quant, ®s->pause_quant); 262 263 /* clear all pending events and set-up interrupts */ 264 iowrite32be(0xffffffff, ®s->ievent); 265 iowrite32be(ioread32be(®s->imask) | exception_mask, ®s->imask); 266 267 return 0; 268 } 269 270 static int check_init_parameters(struct fman_mac *tgec) 271 { 272 if (tgec->max_speed < SPEED_10000) { 273 pr_err("10G MAC driver only support 10G speed\n"); 274 return -EINVAL; 275 } 276 if (tgec->addr == 0) { 277 pr_err("Ethernet 10G MAC Must have valid MAC Address\n"); 278 return -EINVAL; 279 } 280 if (!tgec->exception_cb) { 281 pr_err("uninitialized exception_cb\n"); 282 return -EINVAL; 283 } 284 if (!tgec->event_cb) { 285 pr_err("uninitialized event_cb\n"); 286 return -EINVAL; 287 } 288 289 return 0; 290 } 291 292 static int get_exception_flag(enum fman_mac_exceptions exception) 293 { 294 u32 bit_mask; 295 296 switch (exception) { 297 case FM_MAC_EX_10G_MDIO_SCAN_EVENT: 298 bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT; 299 break; 300 case FM_MAC_EX_10G_MDIO_CMD_CMPL: 301 bit_mask = TGEC_IMASK_MDIO_CMD_CMPL; 302 break; 303 case FM_MAC_EX_10G_REM_FAULT: 304 bit_mask = TGEC_IMASK_REM_FAULT; 305 break; 306 case FM_MAC_EX_10G_LOC_FAULT: 307 bit_mask = TGEC_IMASK_LOC_FAULT; 308 break; 309 case FM_MAC_EX_10G_TX_ECC_ER: 310 bit_mask = TGEC_IMASK_TX_ECC_ER; 311 break; 312 case FM_MAC_EX_10G_TX_FIFO_UNFL: 313 bit_mask = TGEC_IMASK_TX_FIFO_UNFL; 314 break; 315 case FM_MAC_EX_10G_TX_FIFO_OVFL: 316 bit_mask = TGEC_IMASK_TX_FIFO_OVFL; 317 break; 318 case FM_MAC_EX_10G_TX_ER: 319 bit_mask = TGEC_IMASK_TX_ER; 320 break; 321 case FM_MAC_EX_10G_RX_FIFO_OVFL: 322 bit_mask = TGEC_IMASK_RX_FIFO_OVFL; 323 break; 324 case FM_MAC_EX_10G_RX_ECC_ER: 325 bit_mask = TGEC_IMASK_RX_ECC_ER; 326 break; 327 case FM_MAC_EX_10G_RX_JAB_FRM: 328 bit_mask = TGEC_IMASK_RX_JAB_FRM; 329 break; 330 case FM_MAC_EX_10G_RX_OVRSZ_FRM: 331 bit_mask = TGEC_IMASK_RX_OVRSZ_FRM; 332 break; 333 case FM_MAC_EX_10G_RX_RUNT_FRM: 334 bit_mask = TGEC_IMASK_RX_RUNT_FRM; 335 break; 336 case FM_MAC_EX_10G_RX_FRAG_FRM: 337 bit_mask = TGEC_IMASK_RX_FRAG_FRM; 338 break; 339 case FM_MAC_EX_10G_RX_LEN_ER: 340 bit_mask = TGEC_IMASK_RX_LEN_ER; 341 break; 342 case FM_MAC_EX_10G_RX_CRC_ER: 343 bit_mask = TGEC_IMASK_RX_CRC_ER; 344 break; 345 case FM_MAC_EX_10G_RX_ALIGN_ER: 346 bit_mask = TGEC_IMASK_RX_ALIGN_ER; 347 break; 348 default: 349 bit_mask = 0; 350 break; 351 } 352 353 return bit_mask; 354 } 355 356 static void tgec_err_exception(void *handle) 357 { 358 struct fman_mac *tgec = (struct fman_mac *)handle; 359 struct tgec_regs __iomem *regs = tgec->regs; 360 u32 event; 361 362 /* do not handle MDIO events */ 363 event = ioread32be(®s->ievent) & 364 ~(TGEC_IMASK_MDIO_SCAN_EVENT | 365 TGEC_IMASK_MDIO_CMD_CMPL); 366 367 event &= ioread32be(®s->imask); 368 369 iowrite32be(event, ®s->ievent); 370 371 if (event & TGEC_IMASK_REM_FAULT) 372 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT); 373 if (event & TGEC_IMASK_LOC_FAULT) 374 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT); 375 if (event & TGEC_IMASK_TX_ECC_ER) 376 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER); 377 if (event & TGEC_IMASK_TX_FIFO_UNFL) 378 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL); 379 if (event & TGEC_IMASK_TX_FIFO_OVFL) 380 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL); 381 if (event & TGEC_IMASK_TX_ER) 382 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER); 383 if (event & TGEC_IMASK_RX_FIFO_OVFL) 384 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL); 385 if (event & TGEC_IMASK_RX_ECC_ER) 386 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER); 387 if (event & TGEC_IMASK_RX_JAB_FRM) 388 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM); 389 if (event & TGEC_IMASK_RX_OVRSZ_FRM) 390 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM); 391 if (event & TGEC_IMASK_RX_RUNT_FRM) 392 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM); 393 if (event & TGEC_IMASK_RX_FRAG_FRM) 394 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM); 395 if (event & TGEC_IMASK_RX_LEN_ER) 396 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER); 397 if (event & TGEC_IMASK_RX_CRC_ER) 398 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER); 399 if (event & TGEC_IMASK_RX_ALIGN_ER) 400 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER); 401 } 402 403 static void free_init_resources(struct fman_mac *tgec) 404 { 405 fman_unregister_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id, 406 FMAN_INTR_TYPE_ERR); 407 408 /* release the driver's group hash table */ 409 free_hash_table(tgec->multicast_addr_hash); 410 tgec->multicast_addr_hash = NULL; 411 412 /* release the driver's individual hash table */ 413 free_hash_table(tgec->unicast_addr_hash); 414 tgec->unicast_addr_hash = NULL; 415 } 416 417 static bool is_init_done(struct tgec_cfg *cfg) 418 { 419 /* Checks if tGEC driver parameters were initialized */ 420 if (!cfg) 421 return true; 422 423 return false; 424 } 425 426 int tgec_enable(struct fman_mac *tgec, enum comm_mode mode) 427 { 428 struct tgec_regs __iomem *regs = tgec->regs; 429 u32 tmp; 430 431 if (!is_init_done(tgec->cfg)) 432 return -EINVAL; 433 434 tmp = ioread32be(®s->command_config); 435 if (mode & COMM_MODE_RX) 436 tmp |= CMD_CFG_RX_EN; 437 if (mode & COMM_MODE_TX) 438 tmp |= CMD_CFG_TX_EN; 439 iowrite32be(tmp, ®s->command_config); 440 441 return 0; 442 } 443 444 int tgec_disable(struct fman_mac *tgec, enum comm_mode mode) 445 { 446 struct tgec_regs __iomem *regs = tgec->regs; 447 u32 tmp; 448 449 if (!is_init_done(tgec->cfg)) 450 return -EINVAL; 451 452 tmp = ioread32be(®s->command_config); 453 if (mode & COMM_MODE_RX) 454 tmp &= ~CMD_CFG_RX_EN; 455 if (mode & COMM_MODE_TX) 456 tmp &= ~CMD_CFG_TX_EN; 457 iowrite32be(tmp, ®s->command_config); 458 459 return 0; 460 } 461 462 int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val) 463 { 464 struct tgec_regs __iomem *regs = tgec->regs; 465 u32 tmp; 466 467 if (!is_init_done(tgec->cfg)) 468 return -EINVAL; 469 470 tmp = ioread32be(®s->command_config); 471 if (new_val) 472 tmp |= CMD_CFG_PROMIS_EN; 473 else 474 tmp &= ~CMD_CFG_PROMIS_EN; 475 iowrite32be(tmp, ®s->command_config); 476 477 return 0; 478 } 479 480 int tgec_cfg_max_frame_len(struct fman_mac *tgec, u16 new_val) 481 { 482 if (is_init_done(tgec->cfg)) 483 return -EINVAL; 484 485 tgec->cfg->max_frame_length = new_val; 486 487 return 0; 488 } 489 490 int tgec_set_tx_pause_frames(struct fman_mac *tgec, u8 __maybe_unused priority, 491 u16 pause_time, u16 __maybe_unused thresh_time) 492 { 493 struct tgec_regs __iomem *regs = tgec->regs; 494 495 if (!is_init_done(tgec->cfg)) 496 return -EINVAL; 497 498 iowrite32be((u32)pause_time, ®s->pause_quant); 499 500 return 0; 501 } 502 503 int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en) 504 { 505 struct tgec_regs __iomem *regs = tgec->regs; 506 u32 tmp; 507 508 if (!is_init_done(tgec->cfg)) 509 return -EINVAL; 510 511 tmp = ioread32be(®s->command_config); 512 if (!en) 513 tmp |= CMD_CFG_PAUSE_IGNORE; 514 else 515 tmp &= ~CMD_CFG_PAUSE_IGNORE; 516 iowrite32be(tmp, ®s->command_config); 517 518 return 0; 519 } 520 521 int tgec_modify_mac_address(struct fman_mac *tgec, enet_addr_t *p_enet_addr) 522 { 523 if (!is_init_done(tgec->cfg)) 524 return -EINVAL; 525 526 tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr); 527 set_mac_address(tgec->regs, (u8 *)(*p_enet_addr)); 528 529 return 0; 530 } 531 532 int tgec_add_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr) 533 { 534 struct tgec_regs __iomem *regs = tgec->regs; 535 struct eth_hash_entry *hash_entry; 536 u32 crc = 0xFFFFFFFF, hash; 537 u64 addr; 538 539 if (!is_init_done(tgec->cfg)) 540 return -EINVAL; 541 542 addr = ENET_ADDR_TO_UINT64(*eth_addr); 543 544 if (!(addr & GROUP_ADDRESS)) { 545 /* Unicast addresses not supported in hash */ 546 pr_err("Unicast Address\n"); 547 return -EINVAL; 548 } 549 /* CRC calculation */ 550 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN); 551 crc = bitrev32(crc); 552 /* Take 9 MSB bits */ 553 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK; 554 555 /* Create element to be added to the driver hash table */ 556 hash_entry = kmalloc(sizeof(*hash_entry), GFP_KERNEL); 557 if (!hash_entry) 558 return -ENOMEM; 559 hash_entry->addr = addr; 560 INIT_LIST_HEAD(&hash_entry->node); 561 562 list_add_tail(&hash_entry->node, 563 &tgec->multicast_addr_hash->lsts[hash]); 564 iowrite32be((hash | TGEC_HASH_MCAST_EN), ®s->hashtable_ctrl); 565 566 return 0; 567 } 568 569 int tgec_set_allmulti(struct fman_mac *tgec, bool enable) 570 { 571 u32 entry; 572 struct tgec_regs __iomem *regs = tgec->regs; 573 574 if (!is_init_done(tgec->cfg)) 575 return -EINVAL; 576 577 if (enable) { 578 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++) 579 iowrite32be(entry | TGEC_HASH_MCAST_EN, 580 ®s->hashtable_ctrl); 581 } else { 582 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++) 583 iowrite32be(entry & ~TGEC_HASH_MCAST_EN, 584 ®s->hashtable_ctrl); 585 } 586 587 tgec->allmulti_enabled = enable; 588 589 return 0; 590 } 591 592 int tgec_set_tstamp(struct fman_mac *tgec, bool enable) 593 { 594 struct tgec_regs __iomem *regs = tgec->regs; 595 u32 tmp; 596 597 if (!is_init_done(tgec->cfg)) 598 return -EINVAL; 599 600 tmp = ioread32be(®s->command_config); 601 602 if (enable) 603 tmp |= CMD_CFG_EN_TIMESTAMP; 604 else 605 tmp &= ~CMD_CFG_EN_TIMESTAMP; 606 607 iowrite32be(tmp, ®s->command_config); 608 609 return 0; 610 } 611 612 int tgec_del_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr) 613 { 614 struct tgec_regs __iomem *regs = tgec->regs; 615 struct eth_hash_entry *hash_entry = NULL; 616 struct list_head *pos; 617 u32 crc = 0xFFFFFFFF, hash; 618 u64 addr; 619 620 if (!is_init_done(tgec->cfg)) 621 return -EINVAL; 622 623 addr = ((*(u64 *)eth_addr) >> 16); 624 625 /* CRC calculation */ 626 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN); 627 crc = bitrev32(crc); 628 /* Take 9 MSB bits */ 629 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK; 630 631 list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) { 632 hash_entry = ETH_HASH_ENTRY_OBJ(pos); 633 if (hash_entry->addr == addr) { 634 list_del_init(&hash_entry->node); 635 kfree(hash_entry); 636 break; 637 } 638 } 639 640 if (!tgec->allmulti_enabled) { 641 if (list_empty(&tgec->multicast_addr_hash->lsts[hash])) 642 iowrite32be((hash & ~TGEC_HASH_MCAST_EN), 643 ®s->hashtable_ctrl); 644 } 645 646 return 0; 647 } 648 649 int tgec_get_version(struct fman_mac *tgec, u32 *mac_version) 650 { 651 struct tgec_regs __iomem *regs = tgec->regs; 652 653 if (!is_init_done(tgec->cfg)) 654 return -EINVAL; 655 656 *mac_version = ioread32be(®s->tgec_id); 657 658 return 0; 659 } 660 661 int tgec_set_exception(struct fman_mac *tgec, 662 enum fman_mac_exceptions exception, bool enable) 663 { 664 struct tgec_regs __iomem *regs = tgec->regs; 665 u32 bit_mask = 0; 666 667 if (!is_init_done(tgec->cfg)) 668 return -EINVAL; 669 670 bit_mask = get_exception_flag(exception); 671 if (bit_mask) { 672 if (enable) 673 tgec->exceptions |= bit_mask; 674 else 675 tgec->exceptions &= ~bit_mask; 676 } else { 677 pr_err("Undefined exception\n"); 678 return -EINVAL; 679 } 680 if (enable) 681 iowrite32be(ioread32be(®s->imask) | bit_mask, ®s->imask); 682 else 683 iowrite32be(ioread32be(®s->imask) & ~bit_mask, ®s->imask); 684 685 return 0; 686 } 687 688 int tgec_init(struct fman_mac *tgec) 689 { 690 struct tgec_cfg *cfg; 691 enet_addr_t eth_addr; 692 int err; 693 694 if (is_init_done(tgec->cfg)) 695 return -EINVAL; 696 697 if (DEFAULT_RESET_ON_INIT && 698 (fman_reset_mac(tgec->fm, tgec->mac_id) != 0)) { 699 pr_err("Can't reset MAC!\n"); 700 return -EINVAL; 701 } 702 703 err = check_init_parameters(tgec); 704 if (err) 705 return err; 706 707 cfg = tgec->cfg; 708 709 MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr); 710 set_mac_address(tgec->regs, (u8 *)eth_addr); 711 712 /* interrupts */ 713 /* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */ 714 if (tgec->fm_rev_info.major <= 2) 715 tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT | 716 TGEC_IMASK_LOC_FAULT); 717 718 err = init(tgec->regs, cfg, tgec->exceptions); 719 if (err) { 720 free_init_resources(tgec); 721 pr_err("TGEC version doesn't support this i/f mode\n"); 722 return err; 723 } 724 725 /* Max Frame Length */ 726 err = fman_set_mac_max_frame(tgec->fm, tgec->mac_id, 727 cfg->max_frame_length); 728 if (err) { 729 pr_err("Setting max frame length FAILED\n"); 730 free_init_resources(tgec); 731 return -EINVAL; 732 } 733 734 /* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */ 735 if (tgec->fm_rev_info.major == 2) { 736 struct tgec_regs __iomem *regs = tgec->regs; 737 u32 tmp; 738 739 /* restore the default tx ipg Length */ 740 tmp = (ioread32be(®s->tx_ipg_len) & 741 ~TGEC_TX_IPG_LENGTH_MASK) | 12; 742 743 iowrite32be(tmp, ®s->tx_ipg_len); 744 } 745 746 tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE); 747 if (!tgec->multicast_addr_hash) { 748 free_init_resources(tgec); 749 pr_err("allocation hash table is FAILED\n"); 750 return -ENOMEM; 751 } 752 753 tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE); 754 if (!tgec->unicast_addr_hash) { 755 free_init_resources(tgec); 756 pr_err("allocation hash table is FAILED\n"); 757 return -ENOMEM; 758 } 759 760 fman_register_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id, 761 FMAN_INTR_TYPE_ERR, tgec_err_exception, tgec); 762 763 kfree(cfg); 764 tgec->cfg = NULL; 765 766 return 0; 767 } 768 769 int tgec_free(struct fman_mac *tgec) 770 { 771 free_init_resources(tgec); 772 773 kfree(tgec->cfg); 774 kfree(tgec); 775 776 return 0; 777 } 778 779 struct fman_mac *tgec_config(struct fman_mac_params *params) 780 { 781 struct fman_mac *tgec; 782 struct tgec_cfg *cfg; 783 void __iomem *base_addr; 784 785 base_addr = params->base_addr; 786 /* allocate memory for the UCC GETH data structure. */ 787 tgec = kzalloc(sizeof(*tgec), GFP_KERNEL); 788 if (!tgec) 789 return NULL; 790 791 /* allocate memory for the 10G MAC driver parameters data structure. */ 792 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 793 if (!cfg) { 794 tgec_free(tgec); 795 return NULL; 796 } 797 798 /* Plant parameter structure pointer */ 799 tgec->cfg = cfg; 800 801 set_dflts(cfg); 802 803 tgec->regs = base_addr; 804 tgec->addr = ENET_ADDR_TO_UINT64(params->addr); 805 tgec->max_speed = params->max_speed; 806 tgec->mac_id = params->mac_id; 807 tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT | 808 TGEC_IMASK_REM_FAULT | 809 TGEC_IMASK_LOC_FAULT | 810 TGEC_IMASK_TX_ECC_ER | 811 TGEC_IMASK_TX_FIFO_UNFL | 812 TGEC_IMASK_TX_FIFO_OVFL | 813 TGEC_IMASK_TX_ER | 814 TGEC_IMASK_RX_FIFO_OVFL | 815 TGEC_IMASK_RX_ECC_ER | 816 TGEC_IMASK_RX_JAB_FRM | 817 TGEC_IMASK_RX_OVRSZ_FRM | 818 TGEC_IMASK_RX_RUNT_FRM | 819 TGEC_IMASK_RX_FRAG_FRM | 820 TGEC_IMASK_RX_CRC_ER | 821 TGEC_IMASK_RX_ALIGN_ER); 822 tgec->exception_cb = params->exception_cb; 823 tgec->event_cb = params->event_cb; 824 tgec->dev_id = params->dev_id; 825 tgec->fm = params->fm; 826 827 /* Save FMan revision */ 828 fman_get_revision(tgec->fm, &tgec->fm_rev_info); 829 830 return tgec; 831 } 832