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, const 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->exception_cb) { 277 pr_err("uninitialized exception_cb\n"); 278 return -EINVAL; 279 } 280 if (!tgec->event_cb) { 281 pr_err("uninitialized event_cb\n"); 282 return -EINVAL; 283 } 284 285 return 0; 286 } 287 288 static int get_exception_flag(enum fman_mac_exceptions exception) 289 { 290 u32 bit_mask; 291 292 switch (exception) { 293 case FM_MAC_EX_10G_MDIO_SCAN_EVENT: 294 bit_mask = TGEC_IMASK_MDIO_SCAN_EVENT; 295 break; 296 case FM_MAC_EX_10G_MDIO_CMD_CMPL: 297 bit_mask = TGEC_IMASK_MDIO_CMD_CMPL; 298 break; 299 case FM_MAC_EX_10G_REM_FAULT: 300 bit_mask = TGEC_IMASK_REM_FAULT; 301 break; 302 case FM_MAC_EX_10G_LOC_FAULT: 303 bit_mask = TGEC_IMASK_LOC_FAULT; 304 break; 305 case FM_MAC_EX_10G_TX_ECC_ER: 306 bit_mask = TGEC_IMASK_TX_ECC_ER; 307 break; 308 case FM_MAC_EX_10G_TX_FIFO_UNFL: 309 bit_mask = TGEC_IMASK_TX_FIFO_UNFL; 310 break; 311 case FM_MAC_EX_10G_TX_FIFO_OVFL: 312 bit_mask = TGEC_IMASK_TX_FIFO_OVFL; 313 break; 314 case FM_MAC_EX_10G_TX_ER: 315 bit_mask = TGEC_IMASK_TX_ER; 316 break; 317 case FM_MAC_EX_10G_RX_FIFO_OVFL: 318 bit_mask = TGEC_IMASK_RX_FIFO_OVFL; 319 break; 320 case FM_MAC_EX_10G_RX_ECC_ER: 321 bit_mask = TGEC_IMASK_RX_ECC_ER; 322 break; 323 case FM_MAC_EX_10G_RX_JAB_FRM: 324 bit_mask = TGEC_IMASK_RX_JAB_FRM; 325 break; 326 case FM_MAC_EX_10G_RX_OVRSZ_FRM: 327 bit_mask = TGEC_IMASK_RX_OVRSZ_FRM; 328 break; 329 case FM_MAC_EX_10G_RX_RUNT_FRM: 330 bit_mask = TGEC_IMASK_RX_RUNT_FRM; 331 break; 332 case FM_MAC_EX_10G_RX_FRAG_FRM: 333 bit_mask = TGEC_IMASK_RX_FRAG_FRM; 334 break; 335 case FM_MAC_EX_10G_RX_LEN_ER: 336 bit_mask = TGEC_IMASK_RX_LEN_ER; 337 break; 338 case FM_MAC_EX_10G_RX_CRC_ER: 339 bit_mask = TGEC_IMASK_RX_CRC_ER; 340 break; 341 case FM_MAC_EX_10G_RX_ALIGN_ER: 342 bit_mask = TGEC_IMASK_RX_ALIGN_ER; 343 break; 344 default: 345 bit_mask = 0; 346 break; 347 } 348 349 return bit_mask; 350 } 351 352 static void tgec_err_exception(void *handle) 353 { 354 struct fman_mac *tgec = (struct fman_mac *)handle; 355 struct tgec_regs __iomem *regs = tgec->regs; 356 u32 event; 357 358 /* do not handle MDIO events */ 359 event = ioread32be(®s->ievent) & 360 ~(TGEC_IMASK_MDIO_SCAN_EVENT | 361 TGEC_IMASK_MDIO_CMD_CMPL); 362 363 event &= ioread32be(®s->imask); 364 365 iowrite32be(event, ®s->ievent); 366 367 if (event & TGEC_IMASK_REM_FAULT) 368 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_REM_FAULT); 369 if (event & TGEC_IMASK_LOC_FAULT) 370 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_LOC_FAULT); 371 if (event & TGEC_IMASK_TX_ECC_ER) 372 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ECC_ER); 373 if (event & TGEC_IMASK_TX_FIFO_UNFL) 374 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_UNFL); 375 if (event & TGEC_IMASK_TX_FIFO_OVFL) 376 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_FIFO_OVFL); 377 if (event & TGEC_IMASK_TX_ER) 378 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_TX_ER); 379 if (event & TGEC_IMASK_RX_FIFO_OVFL) 380 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FIFO_OVFL); 381 if (event & TGEC_IMASK_RX_ECC_ER) 382 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ECC_ER); 383 if (event & TGEC_IMASK_RX_JAB_FRM) 384 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_JAB_FRM); 385 if (event & TGEC_IMASK_RX_OVRSZ_FRM) 386 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_OVRSZ_FRM); 387 if (event & TGEC_IMASK_RX_RUNT_FRM) 388 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_RUNT_FRM); 389 if (event & TGEC_IMASK_RX_FRAG_FRM) 390 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_FRAG_FRM); 391 if (event & TGEC_IMASK_RX_LEN_ER) 392 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_LEN_ER); 393 if (event & TGEC_IMASK_RX_CRC_ER) 394 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_CRC_ER); 395 if (event & TGEC_IMASK_RX_ALIGN_ER) 396 tgec->exception_cb(tgec->dev_id, FM_MAC_EX_10G_RX_ALIGN_ER); 397 } 398 399 static void free_init_resources(struct fman_mac *tgec) 400 { 401 fman_unregister_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id, 402 FMAN_INTR_TYPE_ERR); 403 404 /* release the driver's group hash table */ 405 free_hash_table(tgec->multicast_addr_hash); 406 tgec->multicast_addr_hash = NULL; 407 408 /* release the driver's individual hash table */ 409 free_hash_table(tgec->unicast_addr_hash); 410 tgec->unicast_addr_hash = NULL; 411 } 412 413 static bool is_init_done(struct tgec_cfg *cfg) 414 { 415 /* Checks if tGEC driver parameters were initialized */ 416 if (!cfg) 417 return true; 418 419 return false; 420 } 421 422 int tgec_enable(struct fman_mac *tgec, enum comm_mode mode) 423 { 424 struct tgec_regs __iomem *regs = tgec->regs; 425 u32 tmp; 426 427 if (!is_init_done(tgec->cfg)) 428 return -EINVAL; 429 430 tmp = ioread32be(®s->command_config); 431 if (mode & COMM_MODE_RX) 432 tmp |= CMD_CFG_RX_EN; 433 if (mode & COMM_MODE_TX) 434 tmp |= CMD_CFG_TX_EN; 435 iowrite32be(tmp, ®s->command_config); 436 437 return 0; 438 } 439 440 int tgec_disable(struct fman_mac *tgec, enum comm_mode mode) 441 { 442 struct tgec_regs __iomem *regs = tgec->regs; 443 u32 tmp; 444 445 if (!is_init_done(tgec->cfg)) 446 return -EINVAL; 447 448 tmp = ioread32be(®s->command_config); 449 if (mode & COMM_MODE_RX) 450 tmp &= ~CMD_CFG_RX_EN; 451 if (mode & COMM_MODE_TX) 452 tmp &= ~CMD_CFG_TX_EN; 453 iowrite32be(tmp, ®s->command_config); 454 455 return 0; 456 } 457 458 int tgec_set_promiscuous(struct fman_mac *tgec, bool new_val) 459 { 460 struct tgec_regs __iomem *regs = tgec->regs; 461 u32 tmp; 462 463 if (!is_init_done(tgec->cfg)) 464 return -EINVAL; 465 466 tmp = ioread32be(®s->command_config); 467 if (new_val) 468 tmp |= CMD_CFG_PROMIS_EN; 469 else 470 tmp &= ~CMD_CFG_PROMIS_EN; 471 iowrite32be(tmp, ®s->command_config); 472 473 return 0; 474 } 475 476 int tgec_cfg_max_frame_len(struct fman_mac *tgec, u16 new_val) 477 { 478 if (is_init_done(tgec->cfg)) 479 return -EINVAL; 480 481 tgec->cfg->max_frame_length = new_val; 482 483 return 0; 484 } 485 486 int tgec_set_tx_pause_frames(struct fman_mac *tgec, u8 __maybe_unused priority, 487 u16 pause_time, u16 __maybe_unused thresh_time) 488 { 489 struct tgec_regs __iomem *regs = tgec->regs; 490 491 if (!is_init_done(tgec->cfg)) 492 return -EINVAL; 493 494 iowrite32be((u32)pause_time, ®s->pause_quant); 495 496 return 0; 497 } 498 499 int tgec_accept_rx_pause_frames(struct fman_mac *tgec, bool en) 500 { 501 struct tgec_regs __iomem *regs = tgec->regs; 502 u32 tmp; 503 504 if (!is_init_done(tgec->cfg)) 505 return -EINVAL; 506 507 tmp = ioread32be(®s->command_config); 508 if (!en) 509 tmp |= CMD_CFG_PAUSE_IGNORE; 510 else 511 tmp &= ~CMD_CFG_PAUSE_IGNORE; 512 iowrite32be(tmp, ®s->command_config); 513 514 return 0; 515 } 516 517 int tgec_modify_mac_address(struct fman_mac *tgec, const enet_addr_t *p_enet_addr) 518 { 519 if (!is_init_done(tgec->cfg)) 520 return -EINVAL; 521 522 tgec->addr = ENET_ADDR_TO_UINT64(*p_enet_addr); 523 set_mac_address(tgec->regs, (const u8 *)(*p_enet_addr)); 524 525 return 0; 526 } 527 528 int tgec_add_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr) 529 { 530 struct tgec_regs __iomem *regs = tgec->regs; 531 struct eth_hash_entry *hash_entry; 532 u32 crc = 0xFFFFFFFF, hash; 533 u64 addr; 534 535 if (!is_init_done(tgec->cfg)) 536 return -EINVAL; 537 538 addr = ENET_ADDR_TO_UINT64(*eth_addr); 539 540 if (!(addr & GROUP_ADDRESS)) { 541 /* Unicast addresses not supported in hash */ 542 pr_err("Unicast Address\n"); 543 return -EINVAL; 544 } 545 /* CRC calculation */ 546 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN); 547 crc = bitrev32(crc); 548 /* Take 9 MSB bits */ 549 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK; 550 551 /* Create element to be added to the driver hash table */ 552 hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC); 553 if (!hash_entry) 554 return -ENOMEM; 555 hash_entry->addr = addr; 556 INIT_LIST_HEAD(&hash_entry->node); 557 558 list_add_tail(&hash_entry->node, 559 &tgec->multicast_addr_hash->lsts[hash]); 560 iowrite32be((hash | TGEC_HASH_MCAST_EN), ®s->hashtable_ctrl); 561 562 return 0; 563 } 564 565 int tgec_set_allmulti(struct fman_mac *tgec, bool enable) 566 { 567 u32 entry; 568 struct tgec_regs __iomem *regs = tgec->regs; 569 570 if (!is_init_done(tgec->cfg)) 571 return -EINVAL; 572 573 if (enable) { 574 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++) 575 iowrite32be(entry | TGEC_HASH_MCAST_EN, 576 ®s->hashtable_ctrl); 577 } else { 578 for (entry = 0; entry < TGEC_HASH_TABLE_SIZE; entry++) 579 iowrite32be(entry & ~TGEC_HASH_MCAST_EN, 580 ®s->hashtable_ctrl); 581 } 582 583 tgec->allmulti_enabled = enable; 584 585 return 0; 586 } 587 588 int tgec_set_tstamp(struct fman_mac *tgec, bool enable) 589 { 590 struct tgec_regs __iomem *regs = tgec->regs; 591 u32 tmp; 592 593 if (!is_init_done(tgec->cfg)) 594 return -EINVAL; 595 596 tmp = ioread32be(®s->command_config); 597 598 if (enable) 599 tmp |= CMD_CFG_EN_TIMESTAMP; 600 else 601 tmp &= ~CMD_CFG_EN_TIMESTAMP; 602 603 iowrite32be(tmp, ®s->command_config); 604 605 return 0; 606 } 607 608 int tgec_del_hash_mac_address(struct fman_mac *tgec, enet_addr_t *eth_addr) 609 { 610 struct tgec_regs __iomem *regs = tgec->regs; 611 struct eth_hash_entry *hash_entry = NULL; 612 struct list_head *pos; 613 u32 crc = 0xFFFFFFFF, hash; 614 u64 addr; 615 616 if (!is_init_done(tgec->cfg)) 617 return -EINVAL; 618 619 addr = ((*(u64 *)eth_addr) >> 16); 620 621 /* CRC calculation */ 622 crc = crc32_le(crc, (u8 *)eth_addr, ETH_ALEN); 623 crc = bitrev32(crc); 624 /* Take 9 MSB bits */ 625 hash = (crc >> TGEC_HASH_MCAST_SHIFT) & TGEC_HASH_ADR_MSK; 626 627 list_for_each(pos, &tgec->multicast_addr_hash->lsts[hash]) { 628 hash_entry = ETH_HASH_ENTRY_OBJ(pos); 629 if (hash_entry && hash_entry->addr == addr) { 630 list_del_init(&hash_entry->node); 631 kfree(hash_entry); 632 break; 633 } 634 } 635 636 if (!tgec->allmulti_enabled) { 637 if (list_empty(&tgec->multicast_addr_hash->lsts[hash])) 638 iowrite32be((hash & ~TGEC_HASH_MCAST_EN), 639 ®s->hashtable_ctrl); 640 } 641 642 return 0; 643 } 644 645 int tgec_get_version(struct fman_mac *tgec, u32 *mac_version) 646 { 647 struct tgec_regs __iomem *regs = tgec->regs; 648 649 if (!is_init_done(tgec->cfg)) 650 return -EINVAL; 651 652 *mac_version = ioread32be(®s->tgec_id); 653 654 return 0; 655 } 656 657 int tgec_set_exception(struct fman_mac *tgec, 658 enum fman_mac_exceptions exception, bool enable) 659 { 660 struct tgec_regs __iomem *regs = tgec->regs; 661 u32 bit_mask = 0; 662 663 if (!is_init_done(tgec->cfg)) 664 return -EINVAL; 665 666 bit_mask = get_exception_flag(exception); 667 if (bit_mask) { 668 if (enable) 669 tgec->exceptions |= bit_mask; 670 else 671 tgec->exceptions &= ~bit_mask; 672 } else { 673 pr_err("Undefined exception\n"); 674 return -EINVAL; 675 } 676 if (enable) 677 iowrite32be(ioread32be(®s->imask) | bit_mask, ®s->imask); 678 else 679 iowrite32be(ioread32be(®s->imask) & ~bit_mask, ®s->imask); 680 681 return 0; 682 } 683 684 int tgec_init(struct fman_mac *tgec) 685 { 686 struct tgec_cfg *cfg; 687 enet_addr_t eth_addr; 688 int err; 689 690 if (is_init_done(tgec->cfg)) 691 return -EINVAL; 692 693 if (DEFAULT_RESET_ON_INIT && 694 (fman_reset_mac(tgec->fm, tgec->mac_id) != 0)) { 695 pr_err("Can't reset MAC!\n"); 696 return -EINVAL; 697 } 698 699 err = check_init_parameters(tgec); 700 if (err) 701 return err; 702 703 cfg = tgec->cfg; 704 705 if (tgec->addr) { 706 MAKE_ENET_ADDR_FROM_UINT64(tgec->addr, eth_addr); 707 set_mac_address(tgec->regs, (const u8 *)eth_addr); 708 } 709 710 /* interrupts */ 711 /* FM_10G_REM_N_LCL_FLT_EX_10GMAC_ERRATA_SW005 Errata workaround */ 712 if (tgec->fm_rev_info.major <= 2) 713 tgec->exceptions &= ~(TGEC_IMASK_REM_FAULT | 714 TGEC_IMASK_LOC_FAULT); 715 716 err = init(tgec->regs, cfg, tgec->exceptions); 717 if (err) { 718 free_init_resources(tgec); 719 pr_err("TGEC version doesn't support this i/f mode\n"); 720 return err; 721 } 722 723 /* Max Frame Length */ 724 err = fman_set_mac_max_frame(tgec->fm, tgec->mac_id, 725 cfg->max_frame_length); 726 if (err) { 727 pr_err("Setting max frame length FAILED\n"); 728 free_init_resources(tgec); 729 return -EINVAL; 730 } 731 732 /* FM_TX_FIFO_CORRUPTION_ERRATA_10GMAC_A007 Errata workaround */ 733 if (tgec->fm_rev_info.major == 2) { 734 struct tgec_regs __iomem *regs = tgec->regs; 735 u32 tmp; 736 737 /* restore the default tx ipg Length */ 738 tmp = (ioread32be(®s->tx_ipg_len) & 739 ~TGEC_TX_IPG_LENGTH_MASK) | 12; 740 741 iowrite32be(tmp, ®s->tx_ipg_len); 742 } 743 744 tgec->multicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE); 745 if (!tgec->multicast_addr_hash) { 746 free_init_resources(tgec); 747 pr_err("allocation hash table is FAILED\n"); 748 return -ENOMEM; 749 } 750 751 tgec->unicast_addr_hash = alloc_hash_table(TGEC_HASH_TABLE_SIZE); 752 if (!tgec->unicast_addr_hash) { 753 free_init_resources(tgec); 754 pr_err("allocation hash table is FAILED\n"); 755 return -ENOMEM; 756 } 757 758 fman_register_intr(tgec->fm, FMAN_MOD_MAC, tgec->mac_id, 759 FMAN_INTR_TYPE_ERR, tgec_err_exception, tgec); 760 761 kfree(cfg); 762 tgec->cfg = NULL; 763 764 return 0; 765 } 766 767 int tgec_free(struct fman_mac *tgec) 768 { 769 free_init_resources(tgec); 770 771 kfree(tgec->cfg); 772 kfree(tgec); 773 774 return 0; 775 } 776 777 struct fman_mac *tgec_config(struct fman_mac_params *params) 778 { 779 struct fman_mac *tgec; 780 struct tgec_cfg *cfg; 781 void __iomem *base_addr; 782 783 base_addr = params->base_addr; 784 /* allocate memory for the UCC GETH data structure. */ 785 tgec = kzalloc(sizeof(*tgec), GFP_KERNEL); 786 if (!tgec) 787 return NULL; 788 789 /* allocate memory for the 10G MAC driver parameters data structure. */ 790 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); 791 if (!cfg) { 792 tgec_free(tgec); 793 return NULL; 794 } 795 796 /* Plant parameter structure pointer */ 797 tgec->cfg = cfg; 798 799 set_dflts(cfg); 800 801 tgec->regs = base_addr; 802 tgec->addr = ENET_ADDR_TO_UINT64(params->addr); 803 tgec->max_speed = params->max_speed; 804 tgec->mac_id = params->mac_id; 805 tgec->exceptions = (TGEC_IMASK_MDIO_SCAN_EVENT | 806 TGEC_IMASK_REM_FAULT | 807 TGEC_IMASK_LOC_FAULT | 808 TGEC_IMASK_TX_ECC_ER | 809 TGEC_IMASK_TX_FIFO_UNFL | 810 TGEC_IMASK_TX_FIFO_OVFL | 811 TGEC_IMASK_TX_ER | 812 TGEC_IMASK_RX_FIFO_OVFL | 813 TGEC_IMASK_RX_ECC_ER | 814 TGEC_IMASK_RX_JAB_FRM | 815 TGEC_IMASK_RX_OVRSZ_FRM | 816 TGEC_IMASK_RX_RUNT_FRM | 817 TGEC_IMASK_RX_FRAG_FRM | 818 TGEC_IMASK_RX_CRC_ER | 819 TGEC_IMASK_RX_ALIGN_ER); 820 tgec->exception_cb = params->exception_cb; 821 tgec->event_cb = params->event_cb; 822 tgec->dev_id = params->dev_id; 823 tgec->fm = params->fm; 824 825 /* Save FMan revision */ 826 fman_get_revision(tgec->fm, &tgec->fm_rev_info); 827 828 return tgec; 829 } 830