1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Driver for Marvell PPv2 network controller for Armada 375 SoC. 4 * 5 * Copyright (C) 2014 Marvell 6 * 7 * Marcin Wojtas <mw@semihalf.com> 8 */ 9 10 #include <linux/acpi.h> 11 #include <linux/kernel.h> 12 #include <linux/netdevice.h> 13 #include <linux/etherdevice.h> 14 #include <linux/platform_device.h> 15 #include <linux/skbuff.h> 16 #include <linux/inetdevice.h> 17 #include <linux/mbus.h> 18 #include <linux/module.h> 19 #include <linux/mfd/syscon.h> 20 #include <linux/interrupt.h> 21 #include <linux/cpumask.h> 22 #include <linux/of.h> 23 #include <linux/of_irq.h> 24 #include <linux/of_mdio.h> 25 #include <linux/of_net.h> 26 #include <linux/of_address.h> 27 #include <linux/phy.h> 28 #include <linux/phylink.h> 29 #include <linux/phy/phy.h> 30 #include <linux/ptp_classify.h> 31 #include <linux/clk.h> 32 #include <linux/hrtimer.h> 33 #include <linux/ktime.h> 34 #include <linux/regmap.h> 35 #include <uapi/linux/ppp_defs.h> 36 #include <net/ip.h> 37 #include <net/ipv6.h> 38 #include <net/page_pool/helpers.h> 39 #include <net/tso.h> 40 #include <linux/bpf_trace.h> 41 42 #include "mvpp2.h" 43 #include "mvpp2_prs.h" 44 #include "mvpp2_cls.h" 45 46 enum mvpp2_bm_pool_log_num { 47 MVPP2_BM_SHORT, 48 MVPP2_BM_LONG, 49 MVPP2_BM_JUMBO, 50 MVPP2_BM_POOLS_NUM 51 }; 52 53 static struct { 54 int pkt_size; 55 int buf_num; 56 } mvpp2_pools[MVPP2_BM_POOLS_NUM]; 57 58 /* The prototype is added here to be used in start_dev when using ACPI. This 59 * will be removed once phylink is used for all modes (dt+ACPI). 60 */ 61 static void mvpp2_acpi_start(struct mvpp2_port *port); 62 63 /* Queue modes */ 64 #define MVPP2_QDIST_SINGLE_MODE 0 65 #define MVPP2_QDIST_MULTI_MODE 1 66 67 static int queue_mode = MVPP2_QDIST_MULTI_MODE; 68 69 module_param(queue_mode, int, 0444); 70 MODULE_PARM_DESC(queue_mode, "Set queue_mode (single=0, multi=1)"); 71 72 /* Utility/helper methods */ 73 74 void mvpp2_write(struct mvpp2 *priv, u32 offset, u32 data) 75 { 76 writel(data, priv->swth_base[0] + offset); 77 } 78 79 u32 mvpp2_read(struct mvpp2 *priv, u32 offset) 80 { 81 return readl(priv->swth_base[0] + offset); 82 } 83 84 static u32 mvpp2_read_relaxed(struct mvpp2 *priv, u32 offset) 85 { 86 return readl_relaxed(priv->swth_base[0] + offset); 87 } 88 89 static inline u32 mvpp2_cpu_to_thread(struct mvpp2 *priv, int cpu) 90 { 91 return cpu % priv->nthreads; 92 } 93 94 static void mvpp2_cm3_write(struct mvpp2 *priv, u32 offset, u32 data) 95 { 96 writel(data, priv->cm3_base + offset); 97 } 98 99 static u32 mvpp2_cm3_read(struct mvpp2 *priv, u32 offset) 100 { 101 return readl(priv->cm3_base + offset); 102 } 103 104 static struct page_pool * 105 mvpp2_create_page_pool(struct device *dev, int num, int len, 106 enum dma_data_direction dma_dir) 107 { 108 struct page_pool_params pp_params = { 109 /* internal DMA mapping in page_pool */ 110 .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV, 111 .pool_size = num, 112 .nid = NUMA_NO_NODE, 113 .dev = dev, 114 .dma_dir = dma_dir, 115 .offset = MVPP2_SKB_HEADROOM, 116 .max_len = len, 117 }; 118 119 return page_pool_create(&pp_params); 120 } 121 122 /* These accessors should be used to access: 123 * 124 * - per-thread registers, where each thread has its own copy of the 125 * register. 126 * 127 * MVPP2_BM_VIRT_ALLOC_REG 128 * MVPP2_BM_ADDR_HIGH_ALLOC 129 * MVPP22_BM_ADDR_HIGH_RLS_REG 130 * MVPP2_BM_VIRT_RLS_REG 131 * MVPP2_ISR_RX_TX_CAUSE_REG 132 * MVPP2_ISR_RX_TX_MASK_REG 133 * MVPP2_TXQ_NUM_REG 134 * MVPP2_AGGR_TXQ_UPDATE_REG 135 * MVPP2_TXQ_RSVD_REQ_REG 136 * MVPP2_TXQ_RSVD_RSLT_REG 137 * MVPP2_TXQ_SENT_REG 138 * MVPP2_RXQ_NUM_REG 139 * 140 * - global registers that must be accessed through a specific thread 141 * window, because they are related to an access to a per-thread 142 * register 143 * 144 * MVPP2_BM_PHY_ALLOC_REG (related to MVPP2_BM_VIRT_ALLOC_REG) 145 * MVPP2_BM_PHY_RLS_REG (related to MVPP2_BM_VIRT_RLS_REG) 146 * MVPP2_RXQ_THRESH_REG (related to MVPP2_RXQ_NUM_REG) 147 * MVPP2_RXQ_DESC_ADDR_REG (related to MVPP2_RXQ_NUM_REG) 148 * MVPP2_RXQ_DESC_SIZE_REG (related to MVPP2_RXQ_NUM_REG) 149 * MVPP2_RXQ_INDEX_REG (related to MVPP2_RXQ_NUM_REG) 150 * MVPP2_TXQ_PENDING_REG (related to MVPP2_TXQ_NUM_REG) 151 * MVPP2_TXQ_DESC_ADDR_REG (related to MVPP2_TXQ_NUM_REG) 152 * MVPP2_TXQ_DESC_SIZE_REG (related to MVPP2_TXQ_NUM_REG) 153 * MVPP2_TXQ_INDEX_REG (related to MVPP2_TXQ_NUM_REG) 154 * MVPP2_TXQ_PENDING_REG (related to MVPP2_TXQ_NUM_REG) 155 * MVPP2_TXQ_PREF_BUF_REG (related to MVPP2_TXQ_NUM_REG) 156 * MVPP2_TXQ_PREF_BUF_REG (related to MVPP2_TXQ_NUM_REG) 157 */ 158 static void mvpp2_thread_write(struct mvpp2 *priv, unsigned int thread, 159 u32 offset, u32 data) 160 { 161 writel(data, priv->swth_base[thread] + offset); 162 } 163 164 static u32 mvpp2_thread_read(struct mvpp2 *priv, unsigned int thread, 165 u32 offset) 166 { 167 return readl(priv->swth_base[thread] + offset); 168 } 169 170 static void mvpp2_thread_write_relaxed(struct mvpp2 *priv, unsigned int thread, 171 u32 offset, u32 data) 172 { 173 writel_relaxed(data, priv->swth_base[thread] + offset); 174 } 175 176 static u32 mvpp2_thread_read_relaxed(struct mvpp2 *priv, unsigned int thread, 177 u32 offset) 178 { 179 return readl_relaxed(priv->swth_base[thread] + offset); 180 } 181 182 static dma_addr_t mvpp2_txdesc_dma_addr_get(struct mvpp2_port *port, 183 struct mvpp2_tx_desc *tx_desc) 184 { 185 if (port->priv->hw_version == MVPP21) 186 return le32_to_cpu(tx_desc->pp21.buf_dma_addr); 187 else 188 return le64_to_cpu(tx_desc->pp22.buf_dma_addr_ptp) & 189 MVPP2_DESC_DMA_MASK; 190 } 191 192 static void mvpp2_txdesc_dma_addr_set(struct mvpp2_port *port, 193 struct mvpp2_tx_desc *tx_desc, 194 dma_addr_t dma_addr) 195 { 196 dma_addr_t addr, offset; 197 198 addr = dma_addr & ~MVPP2_TX_DESC_ALIGN; 199 offset = dma_addr & MVPP2_TX_DESC_ALIGN; 200 201 if (port->priv->hw_version == MVPP21) { 202 tx_desc->pp21.buf_dma_addr = cpu_to_le32(addr); 203 tx_desc->pp21.packet_offset = offset; 204 } else { 205 __le64 val = cpu_to_le64(addr); 206 207 tx_desc->pp22.buf_dma_addr_ptp &= ~cpu_to_le64(MVPP2_DESC_DMA_MASK); 208 tx_desc->pp22.buf_dma_addr_ptp |= val; 209 tx_desc->pp22.packet_offset = offset; 210 } 211 } 212 213 static size_t mvpp2_txdesc_size_get(struct mvpp2_port *port, 214 struct mvpp2_tx_desc *tx_desc) 215 { 216 if (port->priv->hw_version == MVPP21) 217 return le16_to_cpu(tx_desc->pp21.data_size); 218 else 219 return le16_to_cpu(tx_desc->pp22.data_size); 220 } 221 222 static void mvpp2_txdesc_size_set(struct mvpp2_port *port, 223 struct mvpp2_tx_desc *tx_desc, 224 size_t size) 225 { 226 if (port->priv->hw_version == MVPP21) 227 tx_desc->pp21.data_size = cpu_to_le16(size); 228 else 229 tx_desc->pp22.data_size = cpu_to_le16(size); 230 } 231 232 static void mvpp2_txdesc_txq_set(struct mvpp2_port *port, 233 struct mvpp2_tx_desc *tx_desc, 234 unsigned int txq) 235 { 236 if (port->priv->hw_version == MVPP21) 237 tx_desc->pp21.phys_txq = txq; 238 else 239 tx_desc->pp22.phys_txq = txq; 240 } 241 242 static void mvpp2_txdesc_cmd_set(struct mvpp2_port *port, 243 struct mvpp2_tx_desc *tx_desc, 244 unsigned int command) 245 { 246 if (port->priv->hw_version == MVPP21) 247 tx_desc->pp21.command = cpu_to_le32(command); 248 else 249 tx_desc->pp22.command = cpu_to_le32(command); 250 } 251 252 static unsigned int mvpp2_txdesc_offset_get(struct mvpp2_port *port, 253 struct mvpp2_tx_desc *tx_desc) 254 { 255 if (port->priv->hw_version == MVPP21) 256 return tx_desc->pp21.packet_offset; 257 else 258 return tx_desc->pp22.packet_offset; 259 } 260 261 static dma_addr_t mvpp2_rxdesc_dma_addr_get(struct mvpp2_port *port, 262 struct mvpp2_rx_desc *rx_desc) 263 { 264 if (port->priv->hw_version == MVPP21) 265 return le32_to_cpu(rx_desc->pp21.buf_dma_addr); 266 else 267 return le64_to_cpu(rx_desc->pp22.buf_dma_addr_key_hash) & 268 MVPP2_DESC_DMA_MASK; 269 } 270 271 static unsigned long mvpp2_rxdesc_cookie_get(struct mvpp2_port *port, 272 struct mvpp2_rx_desc *rx_desc) 273 { 274 if (port->priv->hw_version == MVPP21) 275 return le32_to_cpu(rx_desc->pp21.buf_cookie); 276 else 277 return le64_to_cpu(rx_desc->pp22.buf_cookie_misc) & 278 MVPP2_DESC_DMA_MASK; 279 } 280 281 static size_t mvpp2_rxdesc_size_get(struct mvpp2_port *port, 282 struct mvpp2_rx_desc *rx_desc) 283 { 284 if (port->priv->hw_version == MVPP21) 285 return le16_to_cpu(rx_desc->pp21.data_size); 286 else 287 return le16_to_cpu(rx_desc->pp22.data_size); 288 } 289 290 static u32 mvpp2_rxdesc_status_get(struct mvpp2_port *port, 291 struct mvpp2_rx_desc *rx_desc) 292 { 293 if (port->priv->hw_version == MVPP21) 294 return le32_to_cpu(rx_desc->pp21.status); 295 else 296 return le32_to_cpu(rx_desc->pp22.status); 297 } 298 299 static void mvpp2_txq_inc_get(struct mvpp2_txq_pcpu *txq_pcpu) 300 { 301 txq_pcpu->txq_get_index++; 302 if (txq_pcpu->txq_get_index == txq_pcpu->size) 303 txq_pcpu->txq_get_index = 0; 304 } 305 306 static void mvpp2_txq_inc_put(struct mvpp2_port *port, 307 struct mvpp2_txq_pcpu *txq_pcpu, 308 void *data, 309 struct mvpp2_tx_desc *tx_desc, 310 enum mvpp2_tx_buf_type buf_type) 311 { 312 struct mvpp2_txq_pcpu_buf *tx_buf = 313 txq_pcpu->buffs + txq_pcpu->txq_put_index; 314 tx_buf->type = buf_type; 315 if (buf_type == MVPP2_TYPE_SKB) 316 tx_buf->skb = data; 317 else 318 tx_buf->xdpf = data; 319 tx_buf->size = mvpp2_txdesc_size_get(port, tx_desc); 320 tx_buf->dma = mvpp2_txdesc_dma_addr_get(port, tx_desc) + 321 mvpp2_txdesc_offset_get(port, tx_desc); 322 txq_pcpu->txq_put_index++; 323 if (txq_pcpu->txq_put_index == txq_pcpu->size) 324 txq_pcpu->txq_put_index = 0; 325 } 326 327 /* Get number of maximum RXQ */ 328 static int mvpp2_get_nrxqs(struct mvpp2 *priv) 329 { 330 unsigned int nrxqs; 331 332 if (priv->hw_version >= MVPP22 && queue_mode == MVPP2_QDIST_SINGLE_MODE) 333 return 1; 334 335 /* According to the PPv2.2 datasheet and our experiments on 336 * PPv2.1, RX queues have an allocation granularity of 4 (when 337 * more than a single one on PPv2.2). 338 * Round up to nearest multiple of 4. 339 */ 340 nrxqs = (num_possible_cpus() + 3) & ~0x3; 341 if (nrxqs > MVPP2_PORT_MAX_RXQ) 342 nrxqs = MVPP2_PORT_MAX_RXQ; 343 344 return nrxqs; 345 } 346 347 /* Get number of physical egress port */ 348 static inline int mvpp2_egress_port(struct mvpp2_port *port) 349 { 350 return MVPP2_MAX_TCONT + port->id; 351 } 352 353 /* Get number of physical TXQ */ 354 static inline int mvpp2_txq_phys(int port, int txq) 355 { 356 return (MVPP2_MAX_TCONT + port) * MVPP2_MAX_TXQ + txq; 357 } 358 359 /* Returns a struct page if page_pool is set, otherwise a buffer */ 360 static void *mvpp2_frag_alloc(const struct mvpp2_bm_pool *pool, 361 struct page_pool *page_pool) 362 { 363 if (page_pool) 364 return page_pool_dev_alloc_pages(page_pool); 365 366 if (likely(pool->frag_size <= PAGE_SIZE)) 367 return netdev_alloc_frag(pool->frag_size); 368 369 return kmalloc(pool->frag_size, GFP_ATOMIC); 370 } 371 372 static void mvpp2_frag_free(const struct mvpp2_bm_pool *pool, 373 struct page_pool *page_pool, void *data) 374 { 375 if (page_pool) 376 page_pool_put_full_page(page_pool, virt_to_head_page(data), false); 377 else if (likely(pool->frag_size <= PAGE_SIZE)) 378 skb_free_frag(data); 379 else 380 kfree(data); 381 } 382 383 /* Buffer Manager configuration routines */ 384 385 /* Create pool */ 386 static int mvpp2_bm_pool_create(struct device *dev, struct mvpp2 *priv, 387 struct mvpp2_bm_pool *bm_pool, int size) 388 { 389 u32 val; 390 391 /* Number of buffer pointers must be a multiple of 16, as per 392 * hardware constraints 393 */ 394 if (!IS_ALIGNED(size, 16)) 395 return -EINVAL; 396 397 /* PPv2.1 needs 8 bytes per buffer pointer, PPv2.2 and PPv2.3 needs 16 398 * bytes per buffer pointer 399 */ 400 if (priv->hw_version == MVPP21) 401 bm_pool->size_bytes = 2 * sizeof(u32) * size; 402 else 403 bm_pool->size_bytes = 2 * sizeof(u64) * size; 404 405 bm_pool->virt_addr = dma_alloc_coherent(dev, bm_pool->size_bytes, 406 &bm_pool->dma_addr, 407 GFP_KERNEL); 408 if (!bm_pool->virt_addr) 409 return -ENOMEM; 410 411 if (!IS_ALIGNED((unsigned long)bm_pool->virt_addr, 412 MVPP2_BM_POOL_PTR_ALIGN)) { 413 dma_free_coherent(dev, bm_pool->size_bytes, 414 bm_pool->virt_addr, bm_pool->dma_addr); 415 dev_err(dev, "BM pool %d is not %d bytes aligned\n", 416 bm_pool->id, MVPP2_BM_POOL_PTR_ALIGN); 417 return -ENOMEM; 418 } 419 420 mvpp2_write(priv, MVPP2_BM_POOL_BASE_REG(bm_pool->id), 421 lower_32_bits(bm_pool->dma_addr)); 422 mvpp2_write(priv, MVPP2_BM_POOL_SIZE_REG(bm_pool->id), size); 423 424 val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id)); 425 val |= MVPP2_BM_START_MASK; 426 427 val &= ~MVPP2_BM_LOW_THRESH_MASK; 428 val &= ~MVPP2_BM_HIGH_THRESH_MASK; 429 430 /* Set 8 Pools BPPI threshold for MVPP23 */ 431 if (priv->hw_version == MVPP23) { 432 val |= MVPP2_BM_LOW_THRESH_VALUE(MVPP23_BM_BPPI_LOW_THRESH); 433 val |= MVPP2_BM_HIGH_THRESH_VALUE(MVPP23_BM_BPPI_HIGH_THRESH); 434 } else { 435 val |= MVPP2_BM_LOW_THRESH_VALUE(MVPP2_BM_BPPI_LOW_THRESH); 436 val |= MVPP2_BM_HIGH_THRESH_VALUE(MVPP2_BM_BPPI_HIGH_THRESH); 437 } 438 439 mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val); 440 441 bm_pool->size = size; 442 bm_pool->pkt_size = 0; 443 bm_pool->buf_num = 0; 444 445 return 0; 446 } 447 448 /* Set pool buffer size */ 449 static void mvpp2_bm_pool_bufsize_set(struct mvpp2 *priv, 450 struct mvpp2_bm_pool *bm_pool, 451 int buf_size) 452 { 453 u32 val; 454 455 bm_pool->buf_size = buf_size; 456 457 val = ALIGN(buf_size, 1 << MVPP2_POOL_BUF_SIZE_OFFSET); 458 mvpp2_write(priv, MVPP2_POOL_BUF_SIZE_REG(bm_pool->id), val); 459 } 460 461 static void mvpp2_bm_bufs_get_addrs(struct device *dev, struct mvpp2 *priv, 462 struct mvpp2_bm_pool *bm_pool, 463 dma_addr_t *dma_addr, 464 phys_addr_t *phys_addr) 465 { 466 unsigned int thread = mvpp2_cpu_to_thread(priv, get_cpu()); 467 468 *dma_addr = mvpp2_thread_read(priv, thread, 469 MVPP2_BM_PHY_ALLOC_REG(bm_pool->id)); 470 *phys_addr = mvpp2_thread_read(priv, thread, MVPP2_BM_VIRT_ALLOC_REG); 471 472 if (priv->hw_version >= MVPP22) { 473 u32 val; 474 u32 dma_addr_highbits, phys_addr_highbits; 475 476 val = mvpp2_thread_read(priv, thread, MVPP22_BM_ADDR_HIGH_ALLOC); 477 dma_addr_highbits = (val & MVPP22_BM_ADDR_HIGH_PHYS_MASK); 478 phys_addr_highbits = (val & MVPP22_BM_ADDR_HIGH_VIRT_MASK) >> 479 MVPP22_BM_ADDR_HIGH_VIRT_SHIFT; 480 481 if (sizeof(dma_addr_t) == 8) 482 *dma_addr |= (u64)dma_addr_highbits << 32; 483 484 if (sizeof(phys_addr_t) == 8) 485 *phys_addr |= (u64)phys_addr_highbits << 32; 486 } 487 488 put_cpu(); 489 } 490 491 /* Free all buffers from the pool */ 492 static void mvpp2_bm_bufs_free(struct device *dev, struct mvpp2 *priv, 493 struct mvpp2_bm_pool *bm_pool, int buf_num) 494 { 495 struct page_pool *pp = NULL; 496 int i; 497 498 if (buf_num > bm_pool->buf_num) { 499 WARN(1, "Pool does not have so many bufs pool(%d) bufs(%d)\n", 500 bm_pool->id, buf_num); 501 buf_num = bm_pool->buf_num; 502 } 503 504 if (priv->percpu_pools) 505 pp = priv->page_pool[bm_pool->id]; 506 507 for (i = 0; i < buf_num; i++) { 508 dma_addr_t buf_dma_addr; 509 phys_addr_t buf_phys_addr; 510 void *data; 511 512 mvpp2_bm_bufs_get_addrs(dev, priv, bm_pool, 513 &buf_dma_addr, &buf_phys_addr); 514 515 if (!pp) 516 dma_unmap_single(dev, buf_dma_addr, 517 bm_pool->buf_size, DMA_FROM_DEVICE); 518 519 data = (void *)phys_to_virt(buf_phys_addr); 520 if (!data) 521 break; 522 523 mvpp2_frag_free(bm_pool, pp, data); 524 } 525 526 /* Update BM driver with number of buffers removed from pool */ 527 bm_pool->buf_num -= i; 528 } 529 530 /* Check number of buffers in BM pool */ 531 static int mvpp2_check_hw_buf_num(struct mvpp2 *priv, struct mvpp2_bm_pool *bm_pool) 532 { 533 int buf_num = 0; 534 535 buf_num += mvpp2_read(priv, MVPP2_BM_POOL_PTRS_NUM_REG(bm_pool->id)) & 536 MVPP22_BM_POOL_PTRS_NUM_MASK; 537 buf_num += mvpp2_read(priv, MVPP2_BM_BPPI_PTRS_NUM_REG(bm_pool->id)) & 538 MVPP2_BM_BPPI_PTR_NUM_MASK; 539 540 /* HW has one buffer ready which is not reflected in the counters */ 541 if (buf_num) 542 buf_num += 1; 543 544 return buf_num; 545 } 546 547 /* Cleanup pool */ 548 static int mvpp2_bm_pool_destroy(struct device *dev, struct mvpp2 *priv, 549 struct mvpp2_bm_pool *bm_pool) 550 { 551 int buf_num; 552 u32 val; 553 554 buf_num = mvpp2_check_hw_buf_num(priv, bm_pool); 555 mvpp2_bm_bufs_free(dev, priv, bm_pool, buf_num); 556 557 /* Check buffer counters after free */ 558 buf_num = mvpp2_check_hw_buf_num(priv, bm_pool); 559 if (buf_num) { 560 WARN(1, "cannot free all buffers in pool %d, buf_num left %d\n", 561 bm_pool->id, bm_pool->buf_num); 562 return 0; 563 } 564 565 val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id)); 566 val |= MVPP2_BM_STOP_MASK; 567 mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(bm_pool->id), val); 568 569 if (priv->percpu_pools) { 570 page_pool_destroy(priv->page_pool[bm_pool->id]); 571 priv->page_pool[bm_pool->id] = NULL; 572 } 573 574 dma_free_coherent(dev, bm_pool->size_bytes, 575 bm_pool->virt_addr, 576 bm_pool->dma_addr); 577 return 0; 578 } 579 580 static int mvpp2_bm_pools_init(struct device *dev, struct mvpp2 *priv) 581 { 582 int i, err, size, poolnum = MVPP2_BM_POOLS_NUM; 583 struct mvpp2_bm_pool *bm_pool; 584 585 if (priv->percpu_pools) 586 poolnum = mvpp2_get_nrxqs(priv) * 2; 587 588 /* Create all pools with maximum size */ 589 size = MVPP2_BM_POOL_SIZE_MAX; 590 for (i = 0; i < poolnum; i++) { 591 bm_pool = &priv->bm_pools[i]; 592 bm_pool->id = i; 593 err = mvpp2_bm_pool_create(dev, priv, bm_pool, size); 594 if (err) 595 goto err_unroll_pools; 596 mvpp2_bm_pool_bufsize_set(priv, bm_pool, 0); 597 } 598 return 0; 599 600 err_unroll_pools: 601 dev_err(dev, "failed to create BM pool %d, size %d\n", i, size); 602 for (i = i - 1; i >= 0; i--) 603 mvpp2_bm_pool_destroy(dev, priv, &priv->bm_pools[i]); 604 return err; 605 } 606 607 /* Routine enable PPv23 8 pool mode */ 608 static void mvpp23_bm_set_8pool_mode(struct mvpp2 *priv) 609 { 610 int val; 611 612 val = mvpp2_read(priv, MVPP22_BM_POOL_BASE_ADDR_HIGH_REG); 613 val |= MVPP23_BM_8POOL_MODE; 614 mvpp2_write(priv, MVPP22_BM_POOL_BASE_ADDR_HIGH_REG, val); 615 } 616 617 /* Cleanup pool before actual initialization in the OS */ 618 static void mvpp2_bm_pool_cleanup(struct mvpp2 *priv, int pool_id) 619 { 620 unsigned int thread = mvpp2_cpu_to_thread(priv, get_cpu()); 621 u32 val; 622 int i; 623 624 /* Drain the BM from all possible residues left by firmware */ 625 for (i = 0; i < MVPP2_BM_POOL_SIZE_MAX; i++) 626 mvpp2_thread_read(priv, thread, MVPP2_BM_PHY_ALLOC_REG(pool_id)); 627 628 put_cpu(); 629 630 /* Stop the BM pool */ 631 val = mvpp2_read(priv, MVPP2_BM_POOL_CTRL_REG(pool_id)); 632 val |= MVPP2_BM_STOP_MASK; 633 mvpp2_write(priv, MVPP2_BM_POOL_CTRL_REG(pool_id), val); 634 } 635 636 static int mvpp2_bm_init(struct device *dev, struct mvpp2 *priv) 637 { 638 enum dma_data_direction dma_dir = DMA_FROM_DEVICE; 639 int i, err, poolnum = MVPP2_BM_POOLS_NUM; 640 struct mvpp2_port *port; 641 642 if (priv->percpu_pools) 643 poolnum = mvpp2_get_nrxqs(priv) * 2; 644 645 /* Clean up the pool state in case it contains stale state */ 646 for (i = 0; i < poolnum; i++) 647 mvpp2_bm_pool_cleanup(priv, i); 648 649 if (priv->percpu_pools) { 650 for (i = 0; i < priv->port_count; i++) { 651 port = priv->port_list[i]; 652 if (port->xdp_prog) { 653 dma_dir = DMA_BIDIRECTIONAL; 654 break; 655 } 656 } 657 658 for (i = 0; i < poolnum; i++) { 659 /* the pool in use */ 660 int pn = i / (poolnum / 2); 661 662 priv->page_pool[i] = 663 mvpp2_create_page_pool(dev, 664 mvpp2_pools[pn].buf_num, 665 mvpp2_pools[pn].pkt_size, 666 dma_dir); 667 if (IS_ERR(priv->page_pool[i])) { 668 int j; 669 670 for (j = 0; j < i; j++) { 671 page_pool_destroy(priv->page_pool[j]); 672 priv->page_pool[j] = NULL; 673 } 674 return PTR_ERR(priv->page_pool[i]); 675 } 676 } 677 } 678 679 dev_info(dev, "using %d %s buffers\n", poolnum, 680 priv->percpu_pools ? "per-cpu" : "shared"); 681 682 for (i = 0; i < poolnum; i++) { 683 /* Mask BM all interrupts */ 684 mvpp2_write(priv, MVPP2_BM_INTR_MASK_REG(i), 0); 685 /* Clear BM cause register */ 686 mvpp2_write(priv, MVPP2_BM_INTR_CAUSE_REG(i), 0); 687 } 688 689 /* Allocate and initialize BM pools */ 690 priv->bm_pools = devm_kcalloc(dev, poolnum, 691 sizeof(*priv->bm_pools), GFP_KERNEL); 692 if (!priv->bm_pools) 693 return -ENOMEM; 694 695 if (priv->hw_version == MVPP23) 696 mvpp23_bm_set_8pool_mode(priv); 697 698 err = mvpp2_bm_pools_init(dev, priv); 699 if (err < 0) 700 return err; 701 return 0; 702 } 703 704 static void mvpp2_setup_bm_pool(void) 705 { 706 /* Short pool */ 707 mvpp2_pools[MVPP2_BM_SHORT].buf_num = MVPP2_BM_SHORT_BUF_NUM; 708 mvpp2_pools[MVPP2_BM_SHORT].pkt_size = MVPP2_BM_SHORT_PKT_SIZE; 709 710 /* Long pool */ 711 mvpp2_pools[MVPP2_BM_LONG].buf_num = MVPP2_BM_LONG_BUF_NUM; 712 mvpp2_pools[MVPP2_BM_LONG].pkt_size = MVPP2_BM_LONG_PKT_SIZE; 713 714 /* Jumbo pool */ 715 mvpp2_pools[MVPP2_BM_JUMBO].buf_num = MVPP2_BM_JUMBO_BUF_NUM; 716 mvpp2_pools[MVPP2_BM_JUMBO].pkt_size = MVPP2_BM_JUMBO_PKT_SIZE; 717 } 718 719 /* Attach long pool to rxq */ 720 static void mvpp2_rxq_long_pool_set(struct mvpp2_port *port, 721 int lrxq, int long_pool) 722 { 723 u32 val, mask; 724 int prxq; 725 726 /* Get queue physical ID */ 727 prxq = port->rxqs[lrxq]->id; 728 729 if (port->priv->hw_version == MVPP21) 730 mask = MVPP21_RXQ_POOL_LONG_MASK; 731 else 732 mask = MVPP22_RXQ_POOL_LONG_MASK; 733 734 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); 735 val &= ~mask; 736 val |= (long_pool << MVPP2_RXQ_POOL_LONG_OFFS) & mask; 737 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); 738 } 739 740 /* Attach short pool to rxq */ 741 static void mvpp2_rxq_short_pool_set(struct mvpp2_port *port, 742 int lrxq, int short_pool) 743 { 744 u32 val, mask; 745 int prxq; 746 747 /* Get queue physical ID */ 748 prxq = port->rxqs[lrxq]->id; 749 750 if (port->priv->hw_version == MVPP21) 751 mask = MVPP21_RXQ_POOL_SHORT_MASK; 752 else 753 mask = MVPP22_RXQ_POOL_SHORT_MASK; 754 755 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); 756 val &= ~mask; 757 val |= (short_pool << MVPP2_RXQ_POOL_SHORT_OFFS) & mask; 758 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); 759 } 760 761 static void *mvpp2_buf_alloc(struct mvpp2_port *port, 762 struct mvpp2_bm_pool *bm_pool, 763 struct page_pool *page_pool, 764 dma_addr_t *buf_dma_addr, 765 phys_addr_t *buf_phys_addr, 766 gfp_t gfp_mask) 767 { 768 dma_addr_t dma_addr; 769 struct page *page; 770 void *data; 771 772 data = mvpp2_frag_alloc(bm_pool, page_pool); 773 if (!data) 774 return NULL; 775 776 if (page_pool) { 777 page = (struct page *)data; 778 dma_addr = page_pool_get_dma_addr(page); 779 data = page_to_virt(page); 780 } else { 781 dma_addr = dma_map_single(port->dev->dev.parent, data, 782 MVPP2_RX_BUF_SIZE(bm_pool->pkt_size), 783 DMA_FROM_DEVICE); 784 if (unlikely(dma_mapping_error(port->dev->dev.parent, dma_addr))) { 785 mvpp2_frag_free(bm_pool, NULL, data); 786 return NULL; 787 } 788 } 789 *buf_dma_addr = dma_addr; 790 *buf_phys_addr = virt_to_phys(data); 791 792 return data; 793 } 794 795 /* Routine enable flow control for RXQs condition */ 796 static void mvpp2_rxq_enable_fc(struct mvpp2_port *port) 797 { 798 int val, cm3_state, host_id, q; 799 int fq = port->first_rxq; 800 unsigned long flags; 801 802 spin_lock_irqsave(&port->priv->mss_spinlock, flags); 803 804 /* Remove Flow control enable bit to prevent race between FW and Kernel 805 * If Flow control was enabled, it would be re-enabled. 806 */ 807 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 808 cm3_state = (val & FLOW_CONTROL_ENABLE_BIT); 809 val &= ~FLOW_CONTROL_ENABLE_BIT; 810 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 811 812 /* Set same Flow control for all RXQs */ 813 for (q = 0; q < port->nrxqs; q++) { 814 /* Set stop and start Flow control RXQ thresholds */ 815 val = MSS_THRESHOLD_START; 816 val |= (MSS_THRESHOLD_STOP << MSS_RXQ_TRESH_STOP_OFFS); 817 mvpp2_cm3_write(port->priv, MSS_RXQ_TRESH_REG(q, fq), val); 818 819 val = mvpp2_cm3_read(port->priv, MSS_RXQ_ASS_REG(q, fq)); 820 /* Set RXQ port ID */ 821 val &= ~(MSS_RXQ_ASS_PORTID_MASK << MSS_RXQ_ASS_Q_BASE(q, fq)); 822 val |= (port->id << MSS_RXQ_ASS_Q_BASE(q, fq)); 823 val &= ~(MSS_RXQ_ASS_HOSTID_MASK << (MSS_RXQ_ASS_Q_BASE(q, fq) 824 + MSS_RXQ_ASS_HOSTID_OFFS)); 825 826 /* Calculate RXQ host ID: 827 * In Single queue mode: Host ID equal to Host ID used for 828 * shared RX interrupt 829 * In Multi queue mode: Host ID equal to number of 830 * RXQ ID / number of CoS queues 831 * In Single resource mode: Host ID always equal to 0 832 */ 833 if (queue_mode == MVPP2_QDIST_SINGLE_MODE) 834 host_id = port->nqvecs; 835 else if (queue_mode == MVPP2_QDIST_MULTI_MODE) 836 host_id = q; 837 else 838 host_id = 0; 839 840 /* Set RXQ host ID */ 841 val |= (host_id << (MSS_RXQ_ASS_Q_BASE(q, fq) 842 + MSS_RXQ_ASS_HOSTID_OFFS)); 843 844 mvpp2_cm3_write(port->priv, MSS_RXQ_ASS_REG(q, fq), val); 845 } 846 847 /* Notify Firmware that Flow control config space ready for update */ 848 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 849 val |= FLOW_CONTROL_UPDATE_COMMAND_BIT; 850 val |= cm3_state; 851 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 852 853 spin_unlock_irqrestore(&port->priv->mss_spinlock, flags); 854 } 855 856 /* Routine disable flow control for RXQs condition */ 857 static void mvpp2_rxq_disable_fc(struct mvpp2_port *port) 858 { 859 int val, cm3_state, q; 860 unsigned long flags; 861 int fq = port->first_rxq; 862 863 spin_lock_irqsave(&port->priv->mss_spinlock, flags); 864 865 /* Remove Flow control enable bit to prevent race between FW and Kernel 866 * If Flow control was enabled, it would be re-enabled. 867 */ 868 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 869 cm3_state = (val & FLOW_CONTROL_ENABLE_BIT); 870 val &= ~FLOW_CONTROL_ENABLE_BIT; 871 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 872 873 /* Disable Flow control for all RXQs */ 874 for (q = 0; q < port->nrxqs; q++) { 875 /* Set threshold 0 to disable Flow control */ 876 val = 0; 877 val |= (0 << MSS_RXQ_TRESH_STOP_OFFS); 878 mvpp2_cm3_write(port->priv, MSS_RXQ_TRESH_REG(q, fq), val); 879 880 val = mvpp2_cm3_read(port->priv, MSS_RXQ_ASS_REG(q, fq)); 881 882 val &= ~(MSS_RXQ_ASS_PORTID_MASK << MSS_RXQ_ASS_Q_BASE(q, fq)); 883 884 val &= ~(MSS_RXQ_ASS_HOSTID_MASK << (MSS_RXQ_ASS_Q_BASE(q, fq) 885 + MSS_RXQ_ASS_HOSTID_OFFS)); 886 887 mvpp2_cm3_write(port->priv, MSS_RXQ_ASS_REG(q, fq), val); 888 } 889 890 /* Notify Firmware that Flow control config space ready for update */ 891 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 892 val |= FLOW_CONTROL_UPDATE_COMMAND_BIT; 893 val |= cm3_state; 894 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 895 896 spin_unlock_irqrestore(&port->priv->mss_spinlock, flags); 897 } 898 899 /* Routine disable/enable flow control for BM pool condition */ 900 static void mvpp2_bm_pool_update_fc(struct mvpp2_port *port, 901 struct mvpp2_bm_pool *pool, 902 bool en) 903 { 904 int val, cm3_state; 905 unsigned long flags; 906 907 spin_lock_irqsave(&port->priv->mss_spinlock, flags); 908 909 /* Remove Flow control enable bit to prevent race between FW and Kernel 910 * If Flow control were enabled, it would be re-enabled. 911 */ 912 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 913 cm3_state = (val & FLOW_CONTROL_ENABLE_BIT); 914 val &= ~FLOW_CONTROL_ENABLE_BIT; 915 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 916 917 /* Check if BM pool should be enabled/disable */ 918 if (en) { 919 /* Set BM pool start and stop thresholds per port */ 920 val = mvpp2_cm3_read(port->priv, MSS_BUF_POOL_REG(pool->id)); 921 val |= MSS_BUF_POOL_PORT_OFFS(port->id); 922 val &= ~MSS_BUF_POOL_START_MASK; 923 val |= (MSS_THRESHOLD_START << MSS_BUF_POOL_START_OFFS); 924 val &= ~MSS_BUF_POOL_STOP_MASK; 925 val |= MSS_THRESHOLD_STOP; 926 mvpp2_cm3_write(port->priv, MSS_BUF_POOL_REG(pool->id), val); 927 } else { 928 /* Remove BM pool from the port */ 929 val = mvpp2_cm3_read(port->priv, MSS_BUF_POOL_REG(pool->id)); 930 val &= ~MSS_BUF_POOL_PORT_OFFS(port->id); 931 932 /* Zero BM pool start and stop thresholds to disable pool 933 * flow control if pool empty (not used by any port) 934 */ 935 if (!pool->buf_num) { 936 val &= ~MSS_BUF_POOL_START_MASK; 937 val &= ~MSS_BUF_POOL_STOP_MASK; 938 } 939 940 mvpp2_cm3_write(port->priv, MSS_BUF_POOL_REG(pool->id), val); 941 } 942 943 /* Notify Firmware that Flow control config space ready for update */ 944 val = mvpp2_cm3_read(port->priv, MSS_FC_COM_REG); 945 val |= FLOW_CONTROL_UPDATE_COMMAND_BIT; 946 val |= cm3_state; 947 mvpp2_cm3_write(port->priv, MSS_FC_COM_REG, val); 948 949 spin_unlock_irqrestore(&port->priv->mss_spinlock, flags); 950 } 951 952 /* disable/enable flow control for BM pool on all ports */ 953 static void mvpp2_bm_pool_update_priv_fc(struct mvpp2 *priv, bool en) 954 { 955 struct mvpp2_port *port; 956 int i, j; 957 958 for (i = 0; i < priv->port_count; i++) { 959 port = priv->port_list[i]; 960 if (port->priv->percpu_pools) { 961 for (j = 0; j < port->nrxqs; j++) 962 mvpp2_bm_pool_update_fc(port, &port->priv->bm_pools[j], 963 port->tx_fc & en); 964 } else { 965 mvpp2_bm_pool_update_fc(port, port->pool_long, port->tx_fc & en); 966 mvpp2_bm_pool_update_fc(port, port->pool_short, port->tx_fc & en); 967 } 968 } 969 } 970 971 static int mvpp2_enable_global_fc(struct mvpp2 *priv) 972 { 973 int val, timeout = 0; 974 975 /* Enable global flow control. In this stage global 976 * flow control enabled, but still disabled per port. 977 */ 978 val = mvpp2_cm3_read(priv, MSS_FC_COM_REG); 979 val |= FLOW_CONTROL_ENABLE_BIT; 980 mvpp2_cm3_write(priv, MSS_FC_COM_REG, val); 981 982 /* Check if Firmware running and disable FC if not*/ 983 val |= FLOW_CONTROL_UPDATE_COMMAND_BIT; 984 mvpp2_cm3_write(priv, MSS_FC_COM_REG, val); 985 986 while (timeout < MSS_FC_MAX_TIMEOUT) { 987 val = mvpp2_cm3_read(priv, MSS_FC_COM_REG); 988 989 if (!(val & FLOW_CONTROL_UPDATE_COMMAND_BIT)) 990 return 0; 991 usleep_range(10, 20); 992 timeout++; 993 } 994 995 priv->global_tx_fc = false; 996 return -EOPNOTSUPP; 997 } 998 999 /* Release buffer to BM */ 1000 static inline void mvpp2_bm_pool_put(struct mvpp2_port *port, int pool, 1001 dma_addr_t buf_dma_addr, 1002 phys_addr_t buf_phys_addr) 1003 { 1004 unsigned int thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 1005 unsigned long flags = 0; 1006 1007 if (test_bit(thread, &port->priv->lock_map)) 1008 spin_lock_irqsave(&port->bm_lock[thread], flags); 1009 1010 if (port->priv->hw_version >= MVPP22) { 1011 u32 val = 0; 1012 1013 if (sizeof(dma_addr_t) == 8) 1014 val |= upper_32_bits(buf_dma_addr) & 1015 MVPP22_BM_ADDR_HIGH_PHYS_RLS_MASK; 1016 1017 if (sizeof(phys_addr_t) == 8) 1018 val |= (upper_32_bits(buf_phys_addr) 1019 << MVPP22_BM_ADDR_HIGH_VIRT_RLS_SHIFT) & 1020 MVPP22_BM_ADDR_HIGH_VIRT_RLS_MASK; 1021 1022 mvpp2_thread_write_relaxed(port->priv, thread, 1023 MVPP22_BM_ADDR_HIGH_RLS_REG, val); 1024 } 1025 1026 /* MVPP2_BM_VIRT_RLS_REG is not interpreted by HW, and simply 1027 * returned in the "cookie" field of the RX 1028 * descriptor. Instead of storing the virtual address, we 1029 * store the physical address 1030 */ 1031 mvpp2_thread_write_relaxed(port->priv, thread, 1032 MVPP2_BM_VIRT_RLS_REG, buf_phys_addr); 1033 mvpp2_thread_write_relaxed(port->priv, thread, 1034 MVPP2_BM_PHY_RLS_REG(pool), buf_dma_addr); 1035 1036 if (test_bit(thread, &port->priv->lock_map)) 1037 spin_unlock_irqrestore(&port->bm_lock[thread], flags); 1038 1039 put_cpu(); 1040 } 1041 1042 /* Allocate buffers for the pool */ 1043 static int mvpp2_bm_bufs_add(struct mvpp2_port *port, 1044 struct mvpp2_bm_pool *bm_pool, int buf_num) 1045 { 1046 int i, buf_size, total_size; 1047 dma_addr_t dma_addr; 1048 phys_addr_t phys_addr; 1049 struct page_pool *pp = NULL; 1050 void *buf; 1051 1052 if (port->priv->percpu_pools && 1053 bm_pool->pkt_size > MVPP2_BM_LONG_PKT_SIZE) { 1054 netdev_err(port->dev, 1055 "attempted to use jumbo frames with per-cpu pools"); 1056 return 0; 1057 } 1058 1059 buf_size = MVPP2_RX_BUF_SIZE(bm_pool->pkt_size); 1060 total_size = MVPP2_RX_TOTAL_SIZE(buf_size); 1061 1062 if (buf_num < 0 || 1063 (buf_num + bm_pool->buf_num > bm_pool->size)) { 1064 netdev_err(port->dev, 1065 "cannot allocate %d buffers for pool %d\n", 1066 buf_num, bm_pool->id); 1067 return 0; 1068 } 1069 1070 if (port->priv->percpu_pools) 1071 pp = port->priv->page_pool[bm_pool->id]; 1072 for (i = 0; i < buf_num; i++) { 1073 buf = mvpp2_buf_alloc(port, bm_pool, pp, &dma_addr, 1074 &phys_addr, GFP_KERNEL); 1075 if (!buf) 1076 break; 1077 1078 mvpp2_bm_pool_put(port, bm_pool->id, dma_addr, 1079 phys_addr); 1080 } 1081 1082 /* Update BM driver with number of buffers added to pool */ 1083 bm_pool->buf_num += i; 1084 1085 netdev_dbg(port->dev, 1086 "pool %d: pkt_size=%4d, buf_size=%4d, total_size=%4d\n", 1087 bm_pool->id, bm_pool->pkt_size, buf_size, total_size); 1088 1089 netdev_dbg(port->dev, 1090 "pool %d: %d of %d buffers added\n", 1091 bm_pool->id, i, buf_num); 1092 return i; 1093 } 1094 1095 /* Notify the driver that BM pool is being used as specific type and return the 1096 * pool pointer on success 1097 */ 1098 static struct mvpp2_bm_pool * 1099 mvpp2_bm_pool_use(struct mvpp2_port *port, unsigned pool, int pkt_size) 1100 { 1101 struct mvpp2_bm_pool *new_pool = &port->priv->bm_pools[pool]; 1102 int num; 1103 1104 if ((port->priv->percpu_pools && pool > mvpp2_get_nrxqs(port->priv) * 2) || 1105 (!port->priv->percpu_pools && pool >= MVPP2_BM_POOLS_NUM)) { 1106 netdev_err(port->dev, "Invalid pool %d\n", pool); 1107 return NULL; 1108 } 1109 1110 /* Allocate buffers in case BM pool is used as long pool, but packet 1111 * size doesn't match MTU or BM pool hasn't being used yet 1112 */ 1113 if (new_pool->pkt_size == 0) { 1114 int pkts_num; 1115 1116 /* Set default buffer number or free all the buffers in case 1117 * the pool is not empty 1118 */ 1119 pkts_num = new_pool->buf_num; 1120 if (pkts_num == 0) { 1121 if (port->priv->percpu_pools) { 1122 if (pool < port->nrxqs) 1123 pkts_num = mvpp2_pools[MVPP2_BM_SHORT].buf_num; 1124 else 1125 pkts_num = mvpp2_pools[MVPP2_BM_LONG].buf_num; 1126 } else { 1127 pkts_num = mvpp2_pools[pool].buf_num; 1128 } 1129 } else { 1130 mvpp2_bm_bufs_free(port->dev->dev.parent, 1131 port->priv, new_pool, pkts_num); 1132 } 1133 1134 new_pool->pkt_size = pkt_size; 1135 new_pool->frag_size = 1136 SKB_DATA_ALIGN(MVPP2_RX_BUF_SIZE(pkt_size)) + 1137 MVPP2_SKB_SHINFO_SIZE; 1138 1139 /* Allocate buffers for this pool */ 1140 num = mvpp2_bm_bufs_add(port, new_pool, pkts_num); 1141 if (num != pkts_num) { 1142 WARN(1, "pool %d: %d of %d allocated\n", 1143 new_pool->id, num, pkts_num); 1144 return NULL; 1145 } 1146 } 1147 1148 mvpp2_bm_pool_bufsize_set(port->priv, new_pool, 1149 MVPP2_RX_BUF_SIZE(new_pool->pkt_size)); 1150 1151 return new_pool; 1152 } 1153 1154 static struct mvpp2_bm_pool * 1155 mvpp2_bm_pool_use_percpu(struct mvpp2_port *port, int type, 1156 unsigned int pool, int pkt_size) 1157 { 1158 struct mvpp2_bm_pool *new_pool = &port->priv->bm_pools[pool]; 1159 int num; 1160 1161 if (pool > port->nrxqs * 2) { 1162 netdev_err(port->dev, "Invalid pool %d\n", pool); 1163 return NULL; 1164 } 1165 1166 /* Allocate buffers in case BM pool is used as long pool, but packet 1167 * size doesn't match MTU or BM pool hasn't being used yet 1168 */ 1169 if (new_pool->pkt_size == 0) { 1170 int pkts_num; 1171 1172 /* Set default buffer number or free all the buffers in case 1173 * the pool is not empty 1174 */ 1175 pkts_num = new_pool->buf_num; 1176 if (pkts_num == 0) 1177 pkts_num = mvpp2_pools[type].buf_num; 1178 else 1179 mvpp2_bm_bufs_free(port->dev->dev.parent, 1180 port->priv, new_pool, pkts_num); 1181 1182 new_pool->pkt_size = pkt_size; 1183 new_pool->frag_size = 1184 SKB_DATA_ALIGN(MVPP2_RX_BUF_SIZE(pkt_size)) + 1185 MVPP2_SKB_SHINFO_SIZE; 1186 1187 /* Allocate buffers for this pool */ 1188 num = mvpp2_bm_bufs_add(port, new_pool, pkts_num); 1189 if (num != pkts_num) { 1190 WARN(1, "pool %d: %d of %d allocated\n", 1191 new_pool->id, num, pkts_num); 1192 return NULL; 1193 } 1194 } 1195 1196 mvpp2_bm_pool_bufsize_set(port->priv, new_pool, 1197 MVPP2_RX_BUF_SIZE(new_pool->pkt_size)); 1198 1199 return new_pool; 1200 } 1201 1202 /* Initialize pools for swf, shared buffers variant */ 1203 static int mvpp2_swf_bm_pool_init_shared(struct mvpp2_port *port) 1204 { 1205 enum mvpp2_bm_pool_log_num long_log_pool, short_log_pool; 1206 int rxq; 1207 1208 /* If port pkt_size is higher than 1518B: 1209 * HW Long pool - SW Jumbo pool, HW Short pool - SW Long pool 1210 * else: HW Long pool - SW Long pool, HW Short pool - SW Short pool 1211 */ 1212 if (port->pkt_size > MVPP2_BM_LONG_PKT_SIZE) { 1213 long_log_pool = MVPP2_BM_JUMBO; 1214 short_log_pool = MVPP2_BM_LONG; 1215 } else { 1216 long_log_pool = MVPP2_BM_LONG; 1217 short_log_pool = MVPP2_BM_SHORT; 1218 } 1219 1220 if (!port->pool_long) { 1221 port->pool_long = 1222 mvpp2_bm_pool_use(port, long_log_pool, 1223 mvpp2_pools[long_log_pool].pkt_size); 1224 if (!port->pool_long) 1225 return -ENOMEM; 1226 1227 port->pool_long->port_map |= BIT(port->id); 1228 1229 for (rxq = 0; rxq < port->nrxqs; rxq++) 1230 mvpp2_rxq_long_pool_set(port, rxq, port->pool_long->id); 1231 } 1232 1233 if (!port->pool_short) { 1234 port->pool_short = 1235 mvpp2_bm_pool_use(port, short_log_pool, 1236 mvpp2_pools[short_log_pool].pkt_size); 1237 if (!port->pool_short) 1238 return -ENOMEM; 1239 1240 port->pool_short->port_map |= BIT(port->id); 1241 1242 for (rxq = 0; rxq < port->nrxqs; rxq++) 1243 mvpp2_rxq_short_pool_set(port, rxq, 1244 port->pool_short->id); 1245 } 1246 1247 return 0; 1248 } 1249 1250 /* Initialize pools for swf, percpu buffers variant */ 1251 static int mvpp2_swf_bm_pool_init_percpu(struct mvpp2_port *port) 1252 { 1253 struct mvpp2_bm_pool *bm_pool; 1254 int i; 1255 1256 for (i = 0; i < port->nrxqs; i++) { 1257 bm_pool = mvpp2_bm_pool_use_percpu(port, MVPP2_BM_SHORT, i, 1258 mvpp2_pools[MVPP2_BM_SHORT].pkt_size); 1259 if (!bm_pool) 1260 return -ENOMEM; 1261 1262 bm_pool->port_map |= BIT(port->id); 1263 mvpp2_rxq_short_pool_set(port, i, bm_pool->id); 1264 } 1265 1266 for (i = 0; i < port->nrxqs; i++) { 1267 bm_pool = mvpp2_bm_pool_use_percpu(port, MVPP2_BM_LONG, i + port->nrxqs, 1268 mvpp2_pools[MVPP2_BM_LONG].pkt_size); 1269 if (!bm_pool) 1270 return -ENOMEM; 1271 1272 bm_pool->port_map |= BIT(port->id); 1273 mvpp2_rxq_long_pool_set(port, i, bm_pool->id); 1274 } 1275 1276 port->pool_long = NULL; 1277 port->pool_short = NULL; 1278 1279 return 0; 1280 } 1281 1282 static int mvpp2_swf_bm_pool_init(struct mvpp2_port *port) 1283 { 1284 if (port->priv->percpu_pools) 1285 return mvpp2_swf_bm_pool_init_percpu(port); 1286 else 1287 return mvpp2_swf_bm_pool_init_shared(port); 1288 } 1289 1290 static void mvpp2_set_hw_csum(struct mvpp2_port *port, 1291 enum mvpp2_bm_pool_log_num new_long_pool) 1292 { 1293 const netdev_features_t csums = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1294 1295 /* Update L4 checksum when jumbo enable/disable on port. 1296 * Only port 0 supports hardware checksum offload due to 1297 * the Tx FIFO size limitation. 1298 * Also, don't set NETIF_F_HW_CSUM because L3_offset in TX descriptor 1299 * has 7 bits, so the maximum L3 offset is 128. 1300 */ 1301 if (new_long_pool == MVPP2_BM_JUMBO && port->id != 0) { 1302 port->dev->features &= ~csums; 1303 port->dev->hw_features &= ~csums; 1304 } else { 1305 port->dev->features |= csums; 1306 port->dev->hw_features |= csums; 1307 } 1308 } 1309 1310 static int mvpp2_bm_update_mtu(struct net_device *dev, int mtu) 1311 { 1312 struct mvpp2_port *port = netdev_priv(dev); 1313 enum mvpp2_bm_pool_log_num new_long_pool; 1314 int pkt_size = MVPP2_RX_PKT_SIZE(mtu); 1315 1316 if (port->priv->percpu_pools) 1317 goto out_set; 1318 1319 /* If port MTU is higher than 1518B: 1320 * HW Long pool - SW Jumbo pool, HW Short pool - SW Long pool 1321 * else: HW Long pool - SW Long pool, HW Short pool - SW Short pool 1322 */ 1323 if (pkt_size > MVPP2_BM_LONG_PKT_SIZE) 1324 new_long_pool = MVPP2_BM_JUMBO; 1325 else 1326 new_long_pool = MVPP2_BM_LONG; 1327 1328 if (new_long_pool != port->pool_long->id) { 1329 if (port->tx_fc) { 1330 if (pkt_size > MVPP2_BM_LONG_PKT_SIZE) 1331 mvpp2_bm_pool_update_fc(port, 1332 port->pool_short, 1333 false); 1334 else 1335 mvpp2_bm_pool_update_fc(port, port->pool_long, 1336 false); 1337 } 1338 1339 /* Remove port from old short & long pool */ 1340 port->pool_long = mvpp2_bm_pool_use(port, port->pool_long->id, 1341 port->pool_long->pkt_size); 1342 port->pool_long->port_map &= ~BIT(port->id); 1343 port->pool_long = NULL; 1344 1345 port->pool_short = mvpp2_bm_pool_use(port, port->pool_short->id, 1346 port->pool_short->pkt_size); 1347 port->pool_short->port_map &= ~BIT(port->id); 1348 port->pool_short = NULL; 1349 1350 port->pkt_size = pkt_size; 1351 1352 /* Add port to new short & long pool */ 1353 mvpp2_swf_bm_pool_init(port); 1354 1355 mvpp2_set_hw_csum(port, new_long_pool); 1356 1357 if (port->tx_fc) { 1358 if (pkt_size > MVPP2_BM_LONG_PKT_SIZE) 1359 mvpp2_bm_pool_update_fc(port, port->pool_long, 1360 true); 1361 else 1362 mvpp2_bm_pool_update_fc(port, port->pool_short, 1363 true); 1364 } 1365 1366 /* Update L4 checksum when jumbo enable/disable on port */ 1367 if (new_long_pool == MVPP2_BM_JUMBO && port->id != 0) { 1368 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); 1369 dev->hw_features &= ~(NETIF_F_IP_CSUM | 1370 NETIF_F_IPV6_CSUM); 1371 } else { 1372 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1373 dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 1374 } 1375 } 1376 1377 out_set: 1378 WRITE_ONCE(dev->mtu, mtu); 1379 dev->wanted_features = dev->features; 1380 1381 netdev_update_features(dev); 1382 return 0; 1383 } 1384 1385 static inline void mvpp2_interrupts_enable(struct mvpp2_port *port) 1386 { 1387 int i, sw_thread_mask = 0; 1388 1389 for (i = 0; i < port->nqvecs; i++) 1390 sw_thread_mask |= port->qvecs[i].sw_thread_mask; 1391 1392 mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), 1393 MVPP2_ISR_ENABLE_INTERRUPT(sw_thread_mask)); 1394 } 1395 1396 static inline void mvpp2_interrupts_disable(struct mvpp2_port *port) 1397 { 1398 int i, sw_thread_mask = 0; 1399 1400 for (i = 0; i < port->nqvecs; i++) 1401 sw_thread_mask |= port->qvecs[i].sw_thread_mask; 1402 1403 mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), 1404 MVPP2_ISR_DISABLE_INTERRUPT(sw_thread_mask)); 1405 } 1406 1407 static inline void mvpp2_qvec_interrupt_enable(struct mvpp2_queue_vector *qvec) 1408 { 1409 struct mvpp2_port *port = qvec->port; 1410 1411 mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), 1412 MVPP2_ISR_ENABLE_INTERRUPT(qvec->sw_thread_mask)); 1413 } 1414 1415 static inline void mvpp2_qvec_interrupt_disable(struct mvpp2_queue_vector *qvec) 1416 { 1417 struct mvpp2_port *port = qvec->port; 1418 1419 mvpp2_write(port->priv, MVPP2_ISR_ENABLE_REG(port->id), 1420 MVPP2_ISR_DISABLE_INTERRUPT(qvec->sw_thread_mask)); 1421 } 1422 1423 /* Mask the current thread's Rx/Tx interrupts 1424 * Called by on_each_cpu(), guaranteed to run with migration disabled, 1425 * using smp_processor_id() is OK. 1426 */ 1427 static void mvpp2_interrupts_mask(void *arg) 1428 { 1429 struct mvpp2_port *port = arg; 1430 int cpu = smp_processor_id(); 1431 u32 thread; 1432 1433 /* If the thread isn't used, don't do anything */ 1434 if (cpu > port->priv->nthreads) 1435 return; 1436 1437 thread = mvpp2_cpu_to_thread(port->priv, cpu); 1438 1439 mvpp2_thread_write(port->priv, thread, 1440 MVPP2_ISR_RX_TX_MASK_REG(port->id), 0); 1441 mvpp2_thread_write(port->priv, thread, 1442 MVPP2_ISR_RX_ERR_CAUSE_REG(port->id), 0); 1443 } 1444 1445 /* Unmask the current thread's Rx/Tx interrupts. 1446 * Called by on_each_cpu(), guaranteed to run with migration disabled, 1447 * using smp_processor_id() is OK. 1448 */ 1449 static void mvpp2_interrupts_unmask(void *arg) 1450 { 1451 struct mvpp2_port *port = arg; 1452 int cpu = smp_processor_id(); 1453 u32 val, thread; 1454 1455 /* If the thread isn't used, don't do anything */ 1456 if (cpu >= port->priv->nthreads) 1457 return; 1458 1459 thread = mvpp2_cpu_to_thread(port->priv, cpu); 1460 1461 val = MVPP2_CAUSE_MISC_SUM_MASK | 1462 MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK(port->priv->hw_version); 1463 if (port->has_tx_irqs) 1464 val |= MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK; 1465 1466 mvpp2_thread_write(port->priv, thread, 1467 MVPP2_ISR_RX_TX_MASK_REG(port->id), val); 1468 mvpp2_thread_write(port->priv, thread, 1469 MVPP2_ISR_RX_ERR_CAUSE_REG(port->id), 1470 MVPP2_ISR_RX_ERR_CAUSE_NONOCC_MASK); 1471 } 1472 1473 static void 1474 mvpp2_shared_interrupt_mask_unmask(struct mvpp2_port *port, bool mask) 1475 { 1476 u32 val; 1477 int i; 1478 1479 if (port->priv->hw_version == MVPP21) 1480 return; 1481 1482 if (mask) 1483 val = 0; 1484 else 1485 val = MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK(MVPP22); 1486 1487 for (i = 0; i < port->nqvecs; i++) { 1488 struct mvpp2_queue_vector *v = port->qvecs + i; 1489 1490 if (v->type != MVPP2_QUEUE_VECTOR_SHARED) 1491 continue; 1492 1493 mvpp2_thread_write(port->priv, v->sw_thread_id, 1494 MVPP2_ISR_RX_TX_MASK_REG(port->id), val); 1495 mvpp2_thread_write(port->priv, v->sw_thread_id, 1496 MVPP2_ISR_RX_ERR_CAUSE_REG(port->id), 1497 MVPP2_ISR_RX_ERR_CAUSE_NONOCC_MASK); 1498 } 1499 } 1500 1501 /* Only GOP port 0 has an XLG MAC */ 1502 static bool mvpp2_port_supports_xlg(struct mvpp2_port *port) 1503 { 1504 return port->gop_id == 0; 1505 } 1506 1507 static bool mvpp2_port_supports_rgmii(struct mvpp2_port *port) 1508 { 1509 return !(port->priv->hw_version >= MVPP22 && port->gop_id == 0); 1510 } 1511 1512 /* Port configuration routines */ 1513 static bool mvpp2_is_xlg(phy_interface_t interface) 1514 { 1515 return interface == PHY_INTERFACE_MODE_10GBASER || 1516 interface == PHY_INTERFACE_MODE_5GBASER || 1517 interface == PHY_INTERFACE_MODE_XAUI; 1518 } 1519 1520 static void mvpp2_modify(void __iomem *ptr, u32 mask, u32 set) 1521 { 1522 u32 old, val; 1523 1524 old = val = readl(ptr); 1525 val &= ~mask; 1526 val |= set; 1527 if (old != val) 1528 writel(val, ptr); 1529 } 1530 1531 static void mvpp22_gop_init_rgmii(struct mvpp2_port *port) 1532 { 1533 struct mvpp2 *priv = port->priv; 1534 u32 val; 1535 1536 regmap_read(priv->sysctrl_base, GENCONF_PORT_CTRL0, &val); 1537 val |= GENCONF_PORT_CTRL0_BUS_WIDTH_SELECT; 1538 regmap_write(priv->sysctrl_base, GENCONF_PORT_CTRL0, val); 1539 1540 regmap_read(priv->sysctrl_base, GENCONF_CTRL0, &val); 1541 if (port->gop_id == 2) { 1542 val |= GENCONF_CTRL0_PORT2_RGMII; 1543 } else if (port->gop_id == 3) { 1544 val |= GENCONF_CTRL0_PORT3_RGMII_MII; 1545 1546 /* According to the specification, GENCONF_CTRL0_PORT3_RGMII 1547 * should be set to 1 for RGMII and 0 for MII. However, tests 1548 * show that it is the other way around. This is also what 1549 * U-Boot does for mvpp2, so it is assumed to be correct. 1550 */ 1551 if (port->phy_interface == PHY_INTERFACE_MODE_MII) 1552 val |= GENCONF_CTRL0_PORT3_RGMII; 1553 else 1554 val &= ~GENCONF_CTRL0_PORT3_RGMII; 1555 } 1556 regmap_write(priv->sysctrl_base, GENCONF_CTRL0, val); 1557 } 1558 1559 static void mvpp22_gop_init_sgmii(struct mvpp2_port *port) 1560 { 1561 struct mvpp2 *priv = port->priv; 1562 u32 val; 1563 1564 regmap_read(priv->sysctrl_base, GENCONF_PORT_CTRL0, &val); 1565 val |= GENCONF_PORT_CTRL0_BUS_WIDTH_SELECT | 1566 GENCONF_PORT_CTRL0_RX_DATA_SAMPLE; 1567 regmap_write(priv->sysctrl_base, GENCONF_PORT_CTRL0, val); 1568 1569 if (port->gop_id > 1) { 1570 regmap_read(priv->sysctrl_base, GENCONF_CTRL0, &val); 1571 if (port->gop_id == 2) 1572 val &= ~GENCONF_CTRL0_PORT2_RGMII; 1573 else if (port->gop_id == 3) 1574 val &= ~GENCONF_CTRL0_PORT3_RGMII_MII; 1575 regmap_write(priv->sysctrl_base, GENCONF_CTRL0, val); 1576 } 1577 } 1578 1579 static void mvpp22_gop_init_10gkr(struct mvpp2_port *port) 1580 { 1581 struct mvpp2 *priv = port->priv; 1582 void __iomem *mpcs = priv->iface_base + MVPP22_MPCS_BASE(port->gop_id); 1583 void __iomem *xpcs = priv->iface_base + MVPP22_XPCS_BASE(port->gop_id); 1584 u32 val; 1585 1586 val = readl(xpcs + MVPP22_XPCS_CFG0); 1587 val &= ~(MVPP22_XPCS_CFG0_PCS_MODE(0x3) | 1588 MVPP22_XPCS_CFG0_ACTIVE_LANE(0x3)); 1589 val |= MVPP22_XPCS_CFG0_ACTIVE_LANE(2); 1590 writel(val, xpcs + MVPP22_XPCS_CFG0); 1591 1592 val = readl(mpcs + MVPP22_MPCS_CTRL); 1593 val &= ~MVPP22_MPCS_CTRL_FWD_ERR_CONN; 1594 writel(val, mpcs + MVPP22_MPCS_CTRL); 1595 1596 val = readl(mpcs + MVPP22_MPCS_CLK_RESET); 1597 val &= ~MVPP22_MPCS_CLK_RESET_DIV_RATIO(0x7); 1598 val |= MVPP22_MPCS_CLK_RESET_DIV_RATIO(1); 1599 writel(val, mpcs + MVPP22_MPCS_CLK_RESET); 1600 } 1601 1602 static void mvpp22_gop_fca_enable_periodic(struct mvpp2_port *port, bool en) 1603 { 1604 struct mvpp2 *priv = port->priv; 1605 void __iomem *fca = priv->iface_base + MVPP22_FCA_BASE(port->gop_id); 1606 u32 val; 1607 1608 val = readl(fca + MVPP22_FCA_CONTROL_REG); 1609 val &= ~MVPP22_FCA_ENABLE_PERIODIC; 1610 if (en) 1611 val |= MVPP22_FCA_ENABLE_PERIODIC; 1612 writel(val, fca + MVPP22_FCA_CONTROL_REG); 1613 } 1614 1615 static void mvpp22_gop_fca_set_timer(struct mvpp2_port *port, u32 timer) 1616 { 1617 struct mvpp2 *priv = port->priv; 1618 void __iomem *fca = priv->iface_base + MVPP22_FCA_BASE(port->gop_id); 1619 u32 lsb, msb; 1620 1621 lsb = timer & MVPP22_FCA_REG_MASK; 1622 msb = timer >> MVPP22_FCA_REG_SIZE; 1623 1624 writel(lsb, fca + MVPP22_PERIODIC_COUNTER_LSB_REG); 1625 writel(msb, fca + MVPP22_PERIODIC_COUNTER_MSB_REG); 1626 } 1627 1628 /* Set Flow Control timer x100 faster than pause quanta to ensure that link 1629 * partner won't send traffic if port is in XOFF mode. 1630 */ 1631 static void mvpp22_gop_fca_set_periodic_timer(struct mvpp2_port *port) 1632 { 1633 u32 timer; 1634 1635 timer = (port->priv->tclk / (USEC_PER_SEC * FC_CLK_DIVIDER)) 1636 * FC_QUANTA; 1637 1638 mvpp22_gop_fca_enable_periodic(port, false); 1639 1640 mvpp22_gop_fca_set_timer(port, timer); 1641 1642 mvpp22_gop_fca_enable_periodic(port, true); 1643 } 1644 1645 static int mvpp22_gop_init(struct mvpp2_port *port, phy_interface_t interface) 1646 { 1647 struct mvpp2 *priv = port->priv; 1648 u32 val; 1649 1650 if (!priv->sysctrl_base) 1651 return 0; 1652 1653 switch (interface) { 1654 case PHY_INTERFACE_MODE_MII: 1655 case PHY_INTERFACE_MODE_RGMII: 1656 case PHY_INTERFACE_MODE_RGMII_ID: 1657 case PHY_INTERFACE_MODE_RGMII_RXID: 1658 case PHY_INTERFACE_MODE_RGMII_TXID: 1659 if (!mvpp2_port_supports_rgmii(port)) 1660 goto invalid_conf; 1661 mvpp22_gop_init_rgmii(port); 1662 break; 1663 case PHY_INTERFACE_MODE_SGMII: 1664 case PHY_INTERFACE_MODE_1000BASEX: 1665 case PHY_INTERFACE_MODE_2500BASEX: 1666 mvpp22_gop_init_sgmii(port); 1667 break; 1668 case PHY_INTERFACE_MODE_5GBASER: 1669 case PHY_INTERFACE_MODE_10GBASER: 1670 if (!mvpp2_port_supports_xlg(port)) 1671 goto invalid_conf; 1672 mvpp22_gop_init_10gkr(port); 1673 break; 1674 default: 1675 goto unsupported_conf; 1676 } 1677 1678 regmap_read(priv->sysctrl_base, GENCONF_PORT_CTRL1, &val); 1679 val |= GENCONF_PORT_CTRL1_RESET(port->gop_id) | 1680 GENCONF_PORT_CTRL1_EN(port->gop_id); 1681 regmap_write(priv->sysctrl_base, GENCONF_PORT_CTRL1, val); 1682 1683 regmap_read(priv->sysctrl_base, GENCONF_PORT_CTRL0, &val); 1684 val |= GENCONF_PORT_CTRL0_CLK_DIV_PHASE_CLR; 1685 regmap_write(priv->sysctrl_base, GENCONF_PORT_CTRL0, val); 1686 1687 regmap_read(priv->sysctrl_base, GENCONF_SOFT_RESET1, &val); 1688 val |= GENCONF_SOFT_RESET1_GOP; 1689 regmap_write(priv->sysctrl_base, GENCONF_SOFT_RESET1, val); 1690 1691 mvpp22_gop_fca_set_periodic_timer(port); 1692 1693 unsupported_conf: 1694 return 0; 1695 1696 invalid_conf: 1697 netdev_err(port->dev, "Invalid port configuration\n"); 1698 return -EINVAL; 1699 } 1700 1701 static void mvpp22_gop_unmask_irq(struct mvpp2_port *port) 1702 { 1703 u32 val; 1704 1705 if (phy_interface_mode_is_rgmii(port->phy_interface) || 1706 phy_interface_mode_is_8023z(port->phy_interface) || 1707 port->phy_interface == PHY_INTERFACE_MODE_SGMII) { 1708 /* Enable the GMAC link status irq for this port */ 1709 val = readl(port->base + MVPP22_GMAC_INT_SUM_MASK); 1710 val |= MVPP22_GMAC_INT_SUM_MASK_LINK_STAT; 1711 writel(val, port->base + MVPP22_GMAC_INT_SUM_MASK); 1712 } 1713 1714 if (mvpp2_port_supports_xlg(port)) { 1715 /* Enable the XLG/GIG irqs for this port */ 1716 val = readl(port->base + MVPP22_XLG_EXT_INT_MASK); 1717 if (mvpp2_is_xlg(port->phy_interface)) 1718 val |= MVPP22_XLG_EXT_INT_MASK_XLG; 1719 else 1720 val |= MVPP22_XLG_EXT_INT_MASK_GIG; 1721 writel(val, port->base + MVPP22_XLG_EXT_INT_MASK); 1722 } 1723 } 1724 1725 static void mvpp22_gop_mask_irq(struct mvpp2_port *port) 1726 { 1727 u32 val; 1728 1729 if (mvpp2_port_supports_xlg(port)) { 1730 val = readl(port->base + MVPP22_XLG_EXT_INT_MASK); 1731 val &= ~(MVPP22_XLG_EXT_INT_MASK_XLG | 1732 MVPP22_XLG_EXT_INT_MASK_GIG); 1733 writel(val, port->base + MVPP22_XLG_EXT_INT_MASK); 1734 } 1735 1736 if (phy_interface_mode_is_rgmii(port->phy_interface) || 1737 phy_interface_mode_is_8023z(port->phy_interface) || 1738 port->phy_interface == PHY_INTERFACE_MODE_SGMII) { 1739 val = readl(port->base + MVPP22_GMAC_INT_SUM_MASK); 1740 val &= ~MVPP22_GMAC_INT_SUM_MASK_LINK_STAT; 1741 writel(val, port->base + MVPP22_GMAC_INT_SUM_MASK); 1742 } 1743 } 1744 1745 static void mvpp22_gop_setup_irq(struct mvpp2_port *port) 1746 { 1747 u32 val; 1748 1749 mvpp2_modify(port->base + MVPP22_GMAC_INT_SUM_MASK, 1750 MVPP22_GMAC_INT_SUM_MASK_PTP, 1751 MVPP22_GMAC_INT_SUM_MASK_PTP); 1752 1753 if (port->phylink || 1754 phy_interface_mode_is_rgmii(port->phy_interface) || 1755 phy_interface_mode_is_8023z(port->phy_interface) || 1756 port->phy_interface == PHY_INTERFACE_MODE_SGMII) { 1757 val = readl(port->base + MVPP22_GMAC_INT_MASK); 1758 val |= MVPP22_GMAC_INT_MASK_LINK_STAT; 1759 writel(val, port->base + MVPP22_GMAC_INT_MASK); 1760 } 1761 1762 if (mvpp2_port_supports_xlg(port)) { 1763 val = readl(port->base + MVPP22_XLG_INT_MASK); 1764 val |= MVPP22_XLG_INT_MASK_LINK; 1765 writel(val, port->base + MVPP22_XLG_INT_MASK); 1766 1767 mvpp2_modify(port->base + MVPP22_XLG_EXT_INT_MASK, 1768 MVPP22_XLG_EXT_INT_MASK_PTP, 1769 MVPP22_XLG_EXT_INT_MASK_PTP); 1770 } 1771 1772 mvpp22_gop_unmask_irq(port); 1773 } 1774 1775 /* Sets the PHY mode of the COMPHY (which configures the serdes lanes). 1776 * 1777 * The PHY mode used by the PPv2 driver comes from the network subsystem, while 1778 * the one given to the COMPHY comes from the generic PHY subsystem. Hence they 1779 * differ. 1780 * 1781 * The COMPHY configures the serdes lanes regardless of the actual use of the 1782 * lanes by the physical layer. This is why configurations like 1783 * "PPv2 (2500BaseX) - COMPHY (2500SGMII)" are valid. 1784 */ 1785 static int mvpp22_comphy_init(struct mvpp2_port *port, 1786 phy_interface_t interface) 1787 { 1788 int ret; 1789 1790 if (!port->comphy) 1791 return 0; 1792 1793 ret = phy_set_mode_ext(port->comphy, PHY_MODE_ETHERNET, interface); 1794 if (ret) 1795 return ret; 1796 1797 return phy_power_on(port->comphy); 1798 } 1799 1800 static void mvpp2_port_enable(struct mvpp2_port *port) 1801 { 1802 u32 val; 1803 1804 if (mvpp2_port_supports_xlg(port) && 1805 mvpp2_is_xlg(port->phy_interface)) { 1806 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 1807 val |= MVPP22_XLG_CTRL0_PORT_EN; 1808 val &= ~MVPP22_XLG_CTRL0_MIB_CNT_DIS; 1809 writel(val, port->base + MVPP22_XLG_CTRL0_REG); 1810 } else { 1811 val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); 1812 val |= MVPP2_GMAC_PORT_EN_MASK; 1813 val |= MVPP2_GMAC_MIB_CNTR_EN_MASK; 1814 writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); 1815 } 1816 } 1817 1818 static void mvpp2_port_disable(struct mvpp2_port *port) 1819 { 1820 u32 val; 1821 1822 if (mvpp2_port_supports_xlg(port) && 1823 mvpp2_is_xlg(port->phy_interface)) { 1824 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 1825 val &= ~MVPP22_XLG_CTRL0_PORT_EN; 1826 writel(val, port->base + MVPP22_XLG_CTRL0_REG); 1827 } 1828 1829 val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); 1830 val &= ~(MVPP2_GMAC_PORT_EN_MASK); 1831 writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); 1832 } 1833 1834 /* Set IEEE 802.3x Flow Control Xon Packet Transmission Mode */ 1835 static void mvpp2_port_periodic_xon_disable(struct mvpp2_port *port) 1836 { 1837 u32 val; 1838 1839 val = readl(port->base + MVPP2_GMAC_CTRL_1_REG) & 1840 ~MVPP2_GMAC_PERIODIC_XON_EN_MASK; 1841 writel(val, port->base + MVPP2_GMAC_CTRL_1_REG); 1842 } 1843 1844 /* Configure loopback port */ 1845 static void mvpp2_port_loopback_set(struct mvpp2_port *port, 1846 const struct phylink_link_state *state) 1847 { 1848 u32 val; 1849 1850 val = readl(port->base + MVPP2_GMAC_CTRL_1_REG); 1851 1852 if (state->speed == 1000) 1853 val |= MVPP2_GMAC_GMII_LB_EN_MASK; 1854 else 1855 val &= ~MVPP2_GMAC_GMII_LB_EN_MASK; 1856 1857 if (phy_interface_mode_is_8023z(state->interface) || 1858 state->interface == PHY_INTERFACE_MODE_SGMII) 1859 val |= MVPP2_GMAC_PCS_LB_EN_MASK; 1860 else 1861 val &= ~MVPP2_GMAC_PCS_LB_EN_MASK; 1862 1863 writel(val, port->base + MVPP2_GMAC_CTRL_1_REG); 1864 } 1865 1866 enum { 1867 ETHTOOL_XDP_REDIRECT, 1868 ETHTOOL_XDP_PASS, 1869 ETHTOOL_XDP_DROP, 1870 ETHTOOL_XDP_TX, 1871 ETHTOOL_XDP_TX_ERR, 1872 ETHTOOL_XDP_XMIT, 1873 ETHTOOL_XDP_XMIT_ERR, 1874 }; 1875 1876 struct mvpp2_ethtool_counter { 1877 unsigned int offset; 1878 const char string[ETH_GSTRING_LEN]; 1879 bool reg_is_64b; 1880 }; 1881 1882 static u64 mvpp2_read_count(struct mvpp2_port *port, 1883 const struct mvpp2_ethtool_counter *counter) 1884 { 1885 u64 val; 1886 1887 val = readl(port->stats_base + counter->offset); 1888 if (counter->reg_is_64b) 1889 val += (u64)readl(port->stats_base + counter->offset + 4) << 32; 1890 1891 return val; 1892 } 1893 1894 /* Some counters are accessed indirectly by first writing an index to 1895 * MVPP2_CTRS_IDX. The index can represent various resources depending on the 1896 * register we access, it can be a hit counter for some classification tables, 1897 * a counter specific to a rxq, a txq or a buffer pool. 1898 */ 1899 static u32 mvpp2_read_index(struct mvpp2 *priv, u32 index, u32 reg) 1900 { 1901 mvpp2_write(priv, MVPP2_CTRS_IDX, index); 1902 return mvpp2_read(priv, reg); 1903 } 1904 1905 /* Due to the fact that software statistics and hardware statistics are, by 1906 * design, incremented at different moments in the chain of packet processing, 1907 * it is very likely that incoming packets could have been dropped after being 1908 * counted by hardware but before reaching software statistics (most probably 1909 * multicast packets), and in the opposite way, during transmission, FCS bytes 1910 * are added in between as well as TSO skb will be split and header bytes added. 1911 * Hence, statistics gathered from userspace with ifconfig (software) and 1912 * ethtool (hardware) cannot be compared. 1913 */ 1914 static const struct mvpp2_ethtool_counter mvpp2_ethtool_mib_regs[] = { 1915 { MVPP2_MIB_GOOD_OCTETS_RCVD, "good_octets_received", true }, 1916 { MVPP2_MIB_BAD_OCTETS_RCVD, "bad_octets_received" }, 1917 { MVPP2_MIB_CRC_ERRORS_SENT, "crc_errors_sent" }, 1918 { MVPP2_MIB_UNICAST_FRAMES_RCVD, "unicast_frames_received" }, 1919 { MVPP2_MIB_BROADCAST_FRAMES_RCVD, "broadcast_frames_received" }, 1920 { MVPP2_MIB_MULTICAST_FRAMES_RCVD, "multicast_frames_received" }, 1921 { MVPP2_MIB_FRAMES_64_OCTETS, "frames_64_octets" }, 1922 { MVPP2_MIB_FRAMES_65_TO_127_OCTETS, "frames_65_to_127_octet" }, 1923 { MVPP2_MIB_FRAMES_128_TO_255_OCTETS, "frames_128_to_255_octet" }, 1924 { MVPP2_MIB_FRAMES_256_TO_511_OCTETS, "frames_256_to_511_octet" }, 1925 { MVPP2_MIB_FRAMES_512_TO_1023_OCTETS, "frames_512_to_1023_octet" }, 1926 { MVPP2_MIB_FRAMES_1024_TO_MAX_OCTETS, "frames_1024_to_max_octet" }, 1927 { MVPP2_MIB_GOOD_OCTETS_SENT, "good_octets_sent", true }, 1928 { MVPP2_MIB_UNICAST_FRAMES_SENT, "unicast_frames_sent" }, 1929 { MVPP2_MIB_MULTICAST_FRAMES_SENT, "multicast_frames_sent" }, 1930 { MVPP2_MIB_BROADCAST_FRAMES_SENT, "broadcast_frames_sent" }, 1931 { MVPP2_MIB_FC_SENT, "fc_sent" }, 1932 { MVPP2_MIB_FC_RCVD, "fc_received" }, 1933 { MVPP2_MIB_RX_FIFO_OVERRUN, "rx_fifo_overrun" }, 1934 { MVPP2_MIB_UNDERSIZE_RCVD, "undersize_received" }, 1935 { MVPP2_MIB_FRAGMENTS_RCVD, "fragments_received" }, 1936 { MVPP2_MIB_OVERSIZE_RCVD, "oversize_received" }, 1937 { MVPP2_MIB_JABBER_RCVD, "jabber_received" }, 1938 { MVPP2_MIB_MAC_RCV_ERROR, "mac_receive_error" }, 1939 { MVPP2_MIB_BAD_CRC_EVENT, "bad_crc_event" }, 1940 { MVPP2_MIB_COLLISION, "collision" }, 1941 { MVPP2_MIB_LATE_COLLISION, "late_collision" }, 1942 }; 1943 1944 static const struct mvpp2_ethtool_counter mvpp2_ethtool_port_regs[] = { 1945 { MVPP2_OVERRUN_ETH_DROP, "rx_fifo_or_parser_overrun_drops" }, 1946 { MVPP2_CLS_ETH_DROP, "rx_classifier_drops" }, 1947 }; 1948 1949 static const struct mvpp2_ethtool_counter mvpp2_ethtool_txq_regs[] = { 1950 { MVPP2_TX_DESC_ENQ_CTR, "txq_%d_desc_enqueue" }, 1951 { MVPP2_TX_DESC_ENQ_TO_DDR_CTR, "txq_%d_desc_enqueue_to_ddr" }, 1952 { MVPP2_TX_BUFF_ENQ_TO_DDR_CTR, "txq_%d_buff_euqueue_to_ddr" }, 1953 { MVPP2_TX_DESC_ENQ_HW_FWD_CTR, "txq_%d_desc_hardware_forwarded" }, 1954 { MVPP2_TX_PKTS_DEQ_CTR, "txq_%d_packets_dequeued" }, 1955 { MVPP2_TX_PKTS_FULL_QUEUE_DROP_CTR, "txq_%d_queue_full_drops" }, 1956 { MVPP2_TX_PKTS_EARLY_DROP_CTR, "txq_%d_packets_early_drops" }, 1957 { MVPP2_TX_PKTS_BM_DROP_CTR, "txq_%d_packets_bm_drops" }, 1958 { MVPP2_TX_PKTS_BM_MC_DROP_CTR, "txq_%d_packets_rep_bm_drops" }, 1959 }; 1960 1961 static const struct mvpp2_ethtool_counter mvpp2_ethtool_rxq_regs[] = { 1962 { MVPP2_RX_DESC_ENQ_CTR, "rxq_%d_desc_enqueue" }, 1963 { MVPP2_RX_PKTS_FULL_QUEUE_DROP_CTR, "rxq_%d_queue_full_drops" }, 1964 { MVPP2_RX_PKTS_EARLY_DROP_CTR, "rxq_%d_packets_early_drops" }, 1965 { MVPP2_RX_PKTS_BM_DROP_CTR, "rxq_%d_packets_bm_drops" }, 1966 }; 1967 1968 static const struct mvpp2_ethtool_counter mvpp2_ethtool_xdp[] = { 1969 { ETHTOOL_XDP_REDIRECT, "rx_xdp_redirect", }, 1970 { ETHTOOL_XDP_PASS, "rx_xdp_pass", }, 1971 { ETHTOOL_XDP_DROP, "rx_xdp_drop", }, 1972 { ETHTOOL_XDP_TX, "rx_xdp_tx", }, 1973 { ETHTOOL_XDP_TX_ERR, "rx_xdp_tx_errors", }, 1974 { ETHTOOL_XDP_XMIT, "tx_xdp_xmit", }, 1975 { ETHTOOL_XDP_XMIT_ERR, "tx_xdp_xmit_errors", }, 1976 }; 1977 1978 #define MVPP2_N_ETHTOOL_STATS(ntxqs, nrxqs) (ARRAY_SIZE(mvpp2_ethtool_mib_regs) + \ 1979 ARRAY_SIZE(mvpp2_ethtool_port_regs) + \ 1980 (ARRAY_SIZE(mvpp2_ethtool_txq_regs) * (ntxqs)) + \ 1981 (ARRAY_SIZE(mvpp2_ethtool_rxq_regs) * (nrxqs)) + \ 1982 ARRAY_SIZE(mvpp2_ethtool_xdp)) 1983 1984 static void mvpp2_ethtool_get_strings(struct net_device *netdev, u32 sset, 1985 u8 *data) 1986 { 1987 struct mvpp2_port *port = netdev_priv(netdev); 1988 const char *str; 1989 int i, q; 1990 1991 if (sset != ETH_SS_STATS) 1992 return; 1993 1994 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_mib_regs); i++) 1995 ethtool_puts(&data, mvpp2_ethtool_mib_regs[i].string); 1996 1997 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_port_regs); i++) 1998 ethtool_puts(&data, mvpp2_ethtool_port_regs[i].string); 1999 2000 for (q = 0; q < port->ntxqs; q++) 2001 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_txq_regs); i++) { 2002 str = mvpp2_ethtool_txq_regs[i].string; 2003 ethtool_sprintf(&data, str, q); 2004 } 2005 2006 for (q = 0; q < port->nrxqs; q++) 2007 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_rxq_regs); i++) { 2008 str = mvpp2_ethtool_rxq_regs[i].string; 2009 ethtool_sprintf(&data, str, q); 2010 } 2011 2012 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_xdp); i++) 2013 ethtool_puts(&data, mvpp2_ethtool_xdp[i].string); 2014 } 2015 2016 static void 2017 mvpp2_get_xdp_stats(struct mvpp2_port *port, struct mvpp2_pcpu_stats *xdp_stats) 2018 { 2019 unsigned int start; 2020 unsigned int cpu; 2021 2022 /* Gather XDP Statistics */ 2023 for_each_possible_cpu(cpu) { 2024 struct mvpp2_pcpu_stats *cpu_stats; 2025 u64 xdp_redirect; 2026 u64 xdp_pass; 2027 u64 xdp_drop; 2028 u64 xdp_xmit; 2029 u64 xdp_xmit_err; 2030 u64 xdp_tx; 2031 u64 xdp_tx_err; 2032 2033 cpu_stats = per_cpu_ptr(port->stats, cpu); 2034 do { 2035 start = u64_stats_fetch_begin(&cpu_stats->syncp); 2036 xdp_redirect = cpu_stats->xdp_redirect; 2037 xdp_pass = cpu_stats->xdp_pass; 2038 xdp_drop = cpu_stats->xdp_drop; 2039 xdp_xmit = cpu_stats->xdp_xmit; 2040 xdp_xmit_err = cpu_stats->xdp_xmit_err; 2041 xdp_tx = cpu_stats->xdp_tx; 2042 xdp_tx_err = cpu_stats->xdp_tx_err; 2043 } while (u64_stats_fetch_retry(&cpu_stats->syncp, start)); 2044 2045 xdp_stats->xdp_redirect += xdp_redirect; 2046 xdp_stats->xdp_pass += xdp_pass; 2047 xdp_stats->xdp_drop += xdp_drop; 2048 xdp_stats->xdp_xmit += xdp_xmit; 2049 xdp_stats->xdp_xmit_err += xdp_xmit_err; 2050 xdp_stats->xdp_tx += xdp_tx; 2051 xdp_stats->xdp_tx_err += xdp_tx_err; 2052 } 2053 } 2054 2055 static void mvpp2_read_stats(struct mvpp2_port *port) 2056 { 2057 struct mvpp2_pcpu_stats xdp_stats = {}; 2058 const struct mvpp2_ethtool_counter *s; 2059 u64 *pstats; 2060 int i, q; 2061 2062 pstats = port->ethtool_stats; 2063 2064 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_mib_regs); i++) 2065 *pstats++ += mvpp2_read_count(port, &mvpp2_ethtool_mib_regs[i]); 2066 2067 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_port_regs); i++) 2068 *pstats++ += mvpp2_read(port->priv, 2069 mvpp2_ethtool_port_regs[i].offset + 2070 4 * port->id); 2071 2072 for (q = 0; q < port->ntxqs; q++) 2073 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_txq_regs); i++) 2074 *pstats++ += mvpp2_read_index(port->priv, 2075 MVPP22_CTRS_TX_CTR(port->id, q), 2076 mvpp2_ethtool_txq_regs[i].offset); 2077 2078 /* Rxqs are numbered from 0 from the user standpoint, but not from the 2079 * driver's. We need to add the port->first_rxq offset. 2080 */ 2081 for (q = 0; q < port->nrxqs; q++) 2082 for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_rxq_regs); i++) 2083 *pstats++ += mvpp2_read_index(port->priv, 2084 port->first_rxq + q, 2085 mvpp2_ethtool_rxq_regs[i].offset); 2086 2087 /* Gather XDP Statistics */ 2088 mvpp2_get_xdp_stats(port, &xdp_stats); 2089 2090 for (i = 0, s = mvpp2_ethtool_xdp; 2091 s < mvpp2_ethtool_xdp + ARRAY_SIZE(mvpp2_ethtool_xdp); 2092 s++, i++) { 2093 switch (s->offset) { 2094 case ETHTOOL_XDP_REDIRECT: 2095 *pstats++ = xdp_stats.xdp_redirect; 2096 break; 2097 case ETHTOOL_XDP_PASS: 2098 *pstats++ = xdp_stats.xdp_pass; 2099 break; 2100 case ETHTOOL_XDP_DROP: 2101 *pstats++ = xdp_stats.xdp_drop; 2102 break; 2103 case ETHTOOL_XDP_TX: 2104 *pstats++ = xdp_stats.xdp_tx; 2105 break; 2106 case ETHTOOL_XDP_TX_ERR: 2107 *pstats++ = xdp_stats.xdp_tx_err; 2108 break; 2109 case ETHTOOL_XDP_XMIT: 2110 *pstats++ = xdp_stats.xdp_xmit; 2111 break; 2112 case ETHTOOL_XDP_XMIT_ERR: 2113 *pstats++ = xdp_stats.xdp_xmit_err; 2114 break; 2115 } 2116 } 2117 } 2118 2119 static void mvpp2_gather_hw_statistics(struct work_struct *work) 2120 { 2121 struct delayed_work *del_work = to_delayed_work(work); 2122 struct mvpp2_port *port = container_of(del_work, struct mvpp2_port, 2123 stats_work); 2124 2125 mutex_lock(&port->gather_stats_lock); 2126 2127 mvpp2_read_stats(port); 2128 2129 /* No need to read again the counters right after this function if it 2130 * was called asynchronously by the user (ie. use of ethtool). 2131 */ 2132 cancel_delayed_work(&port->stats_work); 2133 queue_delayed_work(port->priv->stats_queue, &port->stats_work, 2134 MVPP2_MIB_COUNTERS_STATS_DELAY); 2135 2136 mutex_unlock(&port->gather_stats_lock); 2137 } 2138 2139 static void mvpp2_ethtool_get_stats(struct net_device *dev, 2140 struct ethtool_stats *stats, u64 *data) 2141 { 2142 struct mvpp2_port *port = netdev_priv(dev); 2143 2144 /* Update statistics for the given port, then take the lock to avoid 2145 * concurrent accesses on the ethtool_stats structure during its copy. 2146 */ 2147 mvpp2_gather_hw_statistics(&port->stats_work.work); 2148 2149 mutex_lock(&port->gather_stats_lock); 2150 memcpy(data, port->ethtool_stats, 2151 sizeof(u64) * MVPP2_N_ETHTOOL_STATS(port->ntxqs, port->nrxqs)); 2152 mutex_unlock(&port->gather_stats_lock); 2153 } 2154 2155 static int mvpp2_ethtool_get_sset_count(struct net_device *dev, int sset) 2156 { 2157 struct mvpp2_port *port = netdev_priv(dev); 2158 2159 if (sset == ETH_SS_STATS) 2160 return MVPP2_N_ETHTOOL_STATS(port->ntxqs, port->nrxqs); 2161 2162 return -EOPNOTSUPP; 2163 } 2164 2165 static void mvpp2_mac_reset_assert(struct mvpp2_port *port) 2166 { 2167 u32 val; 2168 2169 val = readl(port->base + MVPP2_GMAC_CTRL_2_REG) | 2170 MVPP2_GMAC_PORT_RESET_MASK; 2171 writel(val, port->base + MVPP2_GMAC_CTRL_2_REG); 2172 2173 if (port->priv->hw_version >= MVPP22 && port->gop_id == 0) { 2174 val = readl(port->base + MVPP22_XLG_CTRL0_REG) & 2175 ~MVPP22_XLG_CTRL0_MAC_RESET_DIS; 2176 writel(val, port->base + MVPP22_XLG_CTRL0_REG); 2177 } 2178 } 2179 2180 static void mvpp22_pcs_reset_assert(struct mvpp2_port *port) 2181 { 2182 struct mvpp2 *priv = port->priv; 2183 void __iomem *mpcs, *xpcs; 2184 u32 val; 2185 2186 if (port->priv->hw_version == MVPP21 || port->gop_id != 0) 2187 return; 2188 2189 mpcs = priv->iface_base + MVPP22_MPCS_BASE(port->gop_id); 2190 xpcs = priv->iface_base + MVPP22_XPCS_BASE(port->gop_id); 2191 2192 val = readl(mpcs + MVPP22_MPCS_CLK_RESET); 2193 val &= ~(MAC_CLK_RESET_MAC | MAC_CLK_RESET_SD_RX | MAC_CLK_RESET_SD_TX); 2194 val |= MVPP22_MPCS_CLK_RESET_DIV_SET; 2195 writel(val, mpcs + MVPP22_MPCS_CLK_RESET); 2196 2197 val = readl(xpcs + MVPP22_XPCS_CFG0); 2198 writel(val & ~MVPP22_XPCS_CFG0_RESET_DIS, xpcs + MVPP22_XPCS_CFG0); 2199 } 2200 2201 static void mvpp22_pcs_reset_deassert(struct mvpp2_port *port, 2202 phy_interface_t interface) 2203 { 2204 struct mvpp2 *priv = port->priv; 2205 void __iomem *mpcs, *xpcs; 2206 u32 val; 2207 2208 if (port->priv->hw_version == MVPP21 || port->gop_id != 0) 2209 return; 2210 2211 mpcs = priv->iface_base + MVPP22_MPCS_BASE(port->gop_id); 2212 xpcs = priv->iface_base + MVPP22_XPCS_BASE(port->gop_id); 2213 2214 switch (interface) { 2215 case PHY_INTERFACE_MODE_5GBASER: 2216 case PHY_INTERFACE_MODE_10GBASER: 2217 val = readl(mpcs + MVPP22_MPCS_CLK_RESET); 2218 val |= MAC_CLK_RESET_MAC | MAC_CLK_RESET_SD_RX | 2219 MAC_CLK_RESET_SD_TX; 2220 val &= ~MVPP22_MPCS_CLK_RESET_DIV_SET; 2221 writel(val, mpcs + MVPP22_MPCS_CLK_RESET); 2222 break; 2223 case PHY_INTERFACE_MODE_XAUI: 2224 case PHY_INTERFACE_MODE_RXAUI: 2225 val = readl(xpcs + MVPP22_XPCS_CFG0); 2226 writel(val | MVPP22_XPCS_CFG0_RESET_DIS, xpcs + MVPP22_XPCS_CFG0); 2227 break; 2228 default: 2229 break; 2230 } 2231 } 2232 2233 /* Change maximum receive size of the port */ 2234 static inline void mvpp2_gmac_max_rx_size_set(struct mvpp2_port *port) 2235 { 2236 u32 val; 2237 2238 val = readl(port->base + MVPP2_GMAC_CTRL_0_REG); 2239 val &= ~MVPP2_GMAC_MAX_RX_SIZE_MASK; 2240 val |= (((port->pkt_size - MVPP2_MH_SIZE) / 2) << 2241 MVPP2_GMAC_MAX_RX_SIZE_OFFS); 2242 writel(val, port->base + MVPP2_GMAC_CTRL_0_REG); 2243 } 2244 2245 /* Change maximum receive size of the port */ 2246 static inline void mvpp2_xlg_max_rx_size_set(struct mvpp2_port *port) 2247 { 2248 u32 val; 2249 2250 val = readl(port->base + MVPP22_XLG_CTRL1_REG); 2251 val &= ~MVPP22_XLG_CTRL1_FRAMESIZELIMIT_MASK; 2252 val |= ((port->pkt_size - MVPP2_MH_SIZE) / 2) << 2253 MVPP22_XLG_CTRL1_FRAMESIZELIMIT_OFFS; 2254 writel(val, port->base + MVPP22_XLG_CTRL1_REG); 2255 } 2256 2257 /* Set defaults to the MVPP2 port */ 2258 static void mvpp2_defaults_set(struct mvpp2_port *port) 2259 { 2260 int tx_port_num, val, queue, lrxq; 2261 2262 if (port->priv->hw_version == MVPP21) { 2263 /* Update TX FIFO MIN Threshold */ 2264 val = readl(port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG); 2265 val &= ~MVPP2_GMAC_TX_FIFO_MIN_TH_ALL_MASK; 2266 /* Min. TX threshold must be less than minimal packet length */ 2267 val |= MVPP2_GMAC_TX_FIFO_MIN_TH_MASK(64 - 4 - 2); 2268 writel(val, port->base + MVPP2_GMAC_PORT_FIFO_CFG_1_REG); 2269 } 2270 2271 /* Disable Legacy WRR, Disable EJP, Release from reset */ 2272 tx_port_num = mvpp2_egress_port(port); 2273 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, 2274 tx_port_num); 2275 mvpp2_write(port->priv, MVPP2_TXP_SCHED_CMD_1_REG, 0); 2276 2277 /* Set TXQ scheduling to Round-Robin */ 2278 mvpp2_write(port->priv, MVPP2_TXP_SCHED_FIXED_PRIO_REG, 0); 2279 2280 /* Close bandwidth for all queues */ 2281 for (queue = 0; queue < MVPP2_MAX_TXQ; queue++) 2282 mvpp2_write(port->priv, 2283 MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(queue), 0); 2284 2285 /* Set refill period to 1 usec, refill tokens 2286 * and bucket size to maximum 2287 */ 2288 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PERIOD_REG, 2289 port->priv->tclk / USEC_PER_SEC); 2290 val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_REFILL_REG); 2291 val &= ~MVPP2_TXP_REFILL_PERIOD_ALL_MASK; 2292 val |= MVPP2_TXP_REFILL_PERIOD_MASK(1); 2293 val |= MVPP2_TXP_REFILL_TOKENS_ALL_MASK; 2294 mvpp2_write(port->priv, MVPP2_TXP_SCHED_REFILL_REG, val); 2295 val = MVPP2_TXP_TOKEN_SIZE_MAX; 2296 mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val); 2297 2298 /* Set MaximumLowLatencyPacketSize value to 256 */ 2299 mvpp2_write(port->priv, MVPP2_RX_CTRL_REG(port->id), 2300 MVPP2_RX_USE_PSEUDO_FOR_CSUM_MASK | 2301 MVPP2_RX_LOW_LATENCY_PKT_SIZE(256)); 2302 2303 /* Enable Rx cache snoop */ 2304 for (lrxq = 0; lrxq < port->nrxqs; lrxq++) { 2305 queue = port->rxqs[lrxq]->id; 2306 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); 2307 val |= MVPP2_SNOOP_PKT_SIZE_MASK | 2308 MVPP2_SNOOP_BUF_HDR_MASK; 2309 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); 2310 } 2311 2312 /* At default, mask all interrupts to all present cpus */ 2313 mvpp2_interrupts_disable(port); 2314 } 2315 2316 /* Enable/disable receiving packets */ 2317 static void mvpp2_ingress_enable(struct mvpp2_port *port) 2318 { 2319 u32 val; 2320 int lrxq, queue; 2321 2322 for (lrxq = 0; lrxq < port->nrxqs; lrxq++) { 2323 queue = port->rxqs[lrxq]->id; 2324 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); 2325 val &= ~MVPP2_RXQ_DISABLE_MASK; 2326 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); 2327 } 2328 } 2329 2330 static void mvpp2_ingress_disable(struct mvpp2_port *port) 2331 { 2332 u32 val; 2333 int lrxq, queue; 2334 2335 for (lrxq = 0; lrxq < port->nrxqs; lrxq++) { 2336 queue = port->rxqs[lrxq]->id; 2337 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(queue)); 2338 val |= MVPP2_RXQ_DISABLE_MASK; 2339 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(queue), val); 2340 } 2341 } 2342 2343 /* Enable transmit via physical egress queue 2344 * - HW starts take descriptors from DRAM 2345 */ 2346 static void mvpp2_egress_enable(struct mvpp2_port *port) 2347 { 2348 u32 qmap; 2349 int queue; 2350 int tx_port_num = mvpp2_egress_port(port); 2351 2352 /* Enable all initialized TXs. */ 2353 qmap = 0; 2354 for (queue = 0; queue < port->ntxqs; queue++) { 2355 struct mvpp2_tx_queue *txq = port->txqs[queue]; 2356 2357 if (txq->descs) 2358 qmap |= (1 << queue); 2359 } 2360 2361 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); 2362 mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG, qmap); 2363 } 2364 2365 /* Disable transmit via physical egress queue 2366 * - HW doesn't take descriptors from DRAM 2367 */ 2368 static void mvpp2_egress_disable(struct mvpp2_port *port) 2369 { 2370 u32 reg_data; 2371 int delay; 2372 int tx_port_num = mvpp2_egress_port(port); 2373 2374 /* Issue stop command for active channels only */ 2375 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); 2376 reg_data = (mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG)) & 2377 MVPP2_TXP_SCHED_ENQ_MASK; 2378 if (reg_data != 0) 2379 mvpp2_write(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG, 2380 (reg_data << MVPP2_TXP_SCHED_DISQ_OFFSET)); 2381 2382 /* Wait for all Tx activity to terminate. */ 2383 delay = 0; 2384 do { 2385 if (delay >= MVPP2_TX_DISABLE_TIMEOUT_MSEC) { 2386 netdev_warn(port->dev, 2387 "Tx stop timed out, status=0x%08x\n", 2388 reg_data); 2389 break; 2390 } 2391 mdelay(1); 2392 delay++; 2393 2394 /* Check port TX Command register that all 2395 * Tx queues are stopped 2396 */ 2397 reg_data = mvpp2_read(port->priv, MVPP2_TXP_SCHED_Q_CMD_REG); 2398 } while (reg_data & MVPP2_TXP_SCHED_ENQ_MASK); 2399 } 2400 2401 /* Rx descriptors helper methods */ 2402 2403 /* Get number of Rx descriptors occupied by received packets */ 2404 static inline int 2405 mvpp2_rxq_received(struct mvpp2_port *port, int rxq_id) 2406 { 2407 u32 val = mvpp2_read(port->priv, MVPP2_RXQ_STATUS_REG(rxq_id)); 2408 2409 return val & MVPP2_RXQ_OCCUPIED_MASK; 2410 } 2411 2412 /* Update Rx queue status with the number of occupied and available 2413 * Rx descriptor slots. 2414 */ 2415 static inline void 2416 mvpp2_rxq_status_update(struct mvpp2_port *port, int rxq_id, 2417 int used_count, int free_count) 2418 { 2419 /* Decrement the number of used descriptors and increment count 2420 * increment the number of free descriptors. 2421 */ 2422 u32 val = used_count | (free_count << MVPP2_RXQ_NUM_NEW_OFFSET); 2423 2424 mvpp2_write(port->priv, MVPP2_RXQ_STATUS_UPDATE_REG(rxq_id), val); 2425 } 2426 2427 /* Get pointer to next RX descriptor to be processed by SW */ 2428 static inline struct mvpp2_rx_desc * 2429 mvpp2_rxq_next_desc_get(struct mvpp2_rx_queue *rxq) 2430 { 2431 int rx_desc = rxq->next_desc_to_proc; 2432 2433 rxq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(rxq, rx_desc); 2434 prefetch(rxq->descs + rxq->next_desc_to_proc); 2435 return rxq->descs + rx_desc; 2436 } 2437 2438 /* Set rx queue offset */ 2439 static void mvpp2_rxq_offset_set(struct mvpp2_port *port, 2440 int prxq, int offset) 2441 { 2442 u32 val; 2443 2444 /* Convert offset from bytes to units of 32 bytes */ 2445 offset = offset >> 5; 2446 2447 val = mvpp2_read(port->priv, MVPP2_RXQ_CONFIG_REG(prxq)); 2448 val &= ~MVPP2_RXQ_PACKET_OFFSET_MASK; 2449 2450 /* Offset is in */ 2451 val |= ((offset << MVPP2_RXQ_PACKET_OFFSET_OFFS) & 2452 MVPP2_RXQ_PACKET_OFFSET_MASK); 2453 2454 mvpp2_write(port->priv, MVPP2_RXQ_CONFIG_REG(prxq), val); 2455 } 2456 2457 /* Tx descriptors helper methods */ 2458 2459 /* Get pointer to next Tx descriptor to be processed (send) by HW */ 2460 static struct mvpp2_tx_desc * 2461 mvpp2_txq_next_desc_get(struct mvpp2_tx_queue *txq) 2462 { 2463 int tx_desc = txq->next_desc_to_proc; 2464 2465 txq->next_desc_to_proc = MVPP2_QUEUE_NEXT_DESC(txq, tx_desc); 2466 return txq->descs + tx_desc; 2467 } 2468 2469 /* Update HW with number of aggregated Tx descriptors to be sent 2470 * 2471 * Called only from mvpp2_tx(), so migration is disabled, using 2472 * smp_processor_id() is OK. 2473 */ 2474 static void mvpp2_aggr_txq_pend_desc_add(struct mvpp2_port *port, int pending) 2475 { 2476 /* aggregated access - relevant TXQ number is written in TX desc */ 2477 mvpp2_thread_write(port->priv, 2478 mvpp2_cpu_to_thread(port->priv, smp_processor_id()), 2479 MVPP2_AGGR_TXQ_UPDATE_REG, pending); 2480 } 2481 2482 /* Check if there are enough free descriptors in aggregated txq. 2483 * If not, update the number of occupied descriptors and repeat the check. 2484 * 2485 * Called only from mvpp2_tx(), so migration is disabled, using 2486 * smp_processor_id() is OK. 2487 */ 2488 static int mvpp2_aggr_desc_num_check(struct mvpp2_port *port, 2489 struct mvpp2_tx_queue *aggr_txq, int num) 2490 { 2491 if ((aggr_txq->count + num) > MVPP2_AGGR_TXQ_SIZE) { 2492 /* Update number of occupied aggregated Tx descriptors */ 2493 unsigned int thread = 2494 mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 2495 u32 val = mvpp2_read_relaxed(port->priv, 2496 MVPP2_AGGR_TXQ_STATUS_REG(thread)); 2497 2498 aggr_txq->count = val & MVPP2_AGGR_TXQ_PENDING_MASK; 2499 2500 if ((aggr_txq->count + num) > MVPP2_AGGR_TXQ_SIZE) 2501 return -ENOMEM; 2502 } 2503 return 0; 2504 } 2505 2506 /* Reserved Tx descriptors allocation request 2507 * 2508 * Called only from mvpp2_txq_reserved_desc_num_proc(), itself called 2509 * only by mvpp2_tx(), so migration is disabled, using 2510 * smp_processor_id() is OK. 2511 */ 2512 static int mvpp2_txq_alloc_reserved_desc(struct mvpp2_port *port, 2513 struct mvpp2_tx_queue *txq, int num) 2514 { 2515 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 2516 struct mvpp2 *priv = port->priv; 2517 u32 val; 2518 2519 val = (txq->id << MVPP2_TXQ_RSVD_REQ_Q_OFFSET) | num; 2520 mvpp2_thread_write_relaxed(priv, thread, MVPP2_TXQ_RSVD_REQ_REG, val); 2521 2522 val = mvpp2_thread_read_relaxed(priv, thread, MVPP2_TXQ_RSVD_RSLT_REG); 2523 2524 return val & MVPP2_TXQ_RSVD_RSLT_MASK; 2525 } 2526 2527 /* Check if there are enough reserved descriptors for transmission. 2528 * If not, request chunk of reserved descriptors and check again. 2529 */ 2530 static int mvpp2_txq_reserved_desc_num_proc(struct mvpp2_port *port, 2531 struct mvpp2_tx_queue *txq, 2532 struct mvpp2_txq_pcpu *txq_pcpu, 2533 int num) 2534 { 2535 int req, desc_count; 2536 unsigned int thread; 2537 2538 if (txq_pcpu->reserved_num >= num) 2539 return 0; 2540 2541 /* Not enough descriptors reserved! Update the reserved descriptor 2542 * count and check again. 2543 */ 2544 2545 desc_count = 0; 2546 /* Compute total of used descriptors */ 2547 for (thread = 0; thread < port->priv->nthreads; thread++) { 2548 struct mvpp2_txq_pcpu *txq_pcpu_aux; 2549 2550 txq_pcpu_aux = per_cpu_ptr(txq->pcpu, thread); 2551 desc_count += txq_pcpu_aux->count; 2552 desc_count += txq_pcpu_aux->reserved_num; 2553 } 2554 2555 req = max(MVPP2_CPU_DESC_CHUNK, num - txq_pcpu->reserved_num); 2556 desc_count += req; 2557 2558 if (desc_count > 2559 (txq->size - (MVPP2_MAX_THREADS * MVPP2_CPU_DESC_CHUNK))) 2560 return -ENOMEM; 2561 2562 txq_pcpu->reserved_num += mvpp2_txq_alloc_reserved_desc(port, txq, req); 2563 2564 /* OK, the descriptor could have been updated: check again. */ 2565 if (txq_pcpu->reserved_num < num) 2566 return -ENOMEM; 2567 return 0; 2568 } 2569 2570 /* Release the last allocated Tx descriptor. Useful to handle DMA 2571 * mapping failures in the Tx path. 2572 */ 2573 static void mvpp2_txq_desc_put(struct mvpp2_tx_queue *txq) 2574 { 2575 if (txq->next_desc_to_proc == 0) 2576 txq->next_desc_to_proc = txq->last_desc - 1; 2577 else 2578 txq->next_desc_to_proc--; 2579 } 2580 2581 /* Set Tx descriptors fields relevant for CSUM calculation */ 2582 static u32 mvpp2_txq_desc_csum(int l3_offs, __be16 l3_proto, 2583 int ip_hdr_len, int l4_proto) 2584 { 2585 u32 command; 2586 2587 /* fields: L3_offset, IP_hdrlen, L3_type, G_IPv4_chk, 2588 * G_L4_chk, L4_type required only for checksum calculation 2589 */ 2590 command = (l3_offs << MVPP2_TXD_L3_OFF_SHIFT); 2591 command |= (ip_hdr_len << MVPP2_TXD_IP_HLEN_SHIFT); 2592 command |= MVPP2_TXD_IP_CSUM_DISABLE; 2593 2594 if (l3_proto == htons(ETH_P_IP)) { 2595 command &= ~MVPP2_TXD_IP_CSUM_DISABLE; /* enable IPv4 csum */ 2596 command &= ~MVPP2_TXD_L3_IP6; /* enable IPv4 */ 2597 } else { 2598 command |= MVPP2_TXD_L3_IP6; /* enable IPv6 */ 2599 } 2600 2601 if (l4_proto == IPPROTO_TCP) { 2602 command &= ~MVPP2_TXD_L4_UDP; /* enable TCP */ 2603 command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */ 2604 } else if (l4_proto == IPPROTO_UDP) { 2605 command |= MVPP2_TXD_L4_UDP; /* enable UDP */ 2606 command &= ~MVPP2_TXD_L4_CSUM_FRAG; /* generate L4 csum */ 2607 } else { 2608 command |= MVPP2_TXD_L4_CSUM_NOT; 2609 } 2610 2611 return command; 2612 } 2613 2614 /* Get number of sent descriptors and decrement counter. 2615 * The number of sent descriptors is returned. 2616 * Per-thread access 2617 * 2618 * Called only from mvpp2_txq_done(), called from mvpp2_tx() 2619 * (migration disabled) and from the TX completion tasklet (migration 2620 * disabled) so using smp_processor_id() is OK. 2621 */ 2622 static inline int mvpp2_txq_sent_desc_proc(struct mvpp2_port *port, 2623 struct mvpp2_tx_queue *txq) 2624 { 2625 u32 val; 2626 2627 /* Reading status reg resets transmitted descriptor counter */ 2628 val = mvpp2_thread_read_relaxed(port->priv, 2629 mvpp2_cpu_to_thread(port->priv, smp_processor_id()), 2630 MVPP2_TXQ_SENT_REG(txq->id)); 2631 2632 return (val & MVPP2_TRANSMITTED_COUNT_MASK) >> 2633 MVPP2_TRANSMITTED_COUNT_OFFSET; 2634 } 2635 2636 /* Called through on_each_cpu(), so runs on all CPUs, with migration 2637 * disabled, therefore using smp_processor_id() is OK. 2638 */ 2639 static void mvpp2_txq_sent_counter_clear(void *arg) 2640 { 2641 struct mvpp2_port *port = arg; 2642 int queue; 2643 2644 /* If the thread isn't used, don't do anything */ 2645 if (smp_processor_id() >= port->priv->nthreads) 2646 return; 2647 2648 for (queue = 0; queue < port->ntxqs; queue++) { 2649 int id = port->txqs[queue]->id; 2650 2651 mvpp2_thread_read(port->priv, 2652 mvpp2_cpu_to_thread(port->priv, smp_processor_id()), 2653 MVPP2_TXQ_SENT_REG(id)); 2654 } 2655 } 2656 2657 /* Set max sizes for Tx queues */ 2658 static void mvpp2_txp_max_tx_size_set(struct mvpp2_port *port) 2659 { 2660 u32 val, size, mtu; 2661 int txq, tx_port_num; 2662 2663 mtu = port->pkt_size * 8; 2664 if (mtu > MVPP2_TXP_MTU_MAX) 2665 mtu = MVPP2_TXP_MTU_MAX; 2666 2667 /* WA for wrong Token bucket update: Set MTU value = 3*real MTU value */ 2668 mtu = 3 * mtu; 2669 2670 /* Indirect access to registers */ 2671 tx_port_num = mvpp2_egress_port(port); 2672 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); 2673 2674 /* Set MTU */ 2675 val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_MTU_REG); 2676 val &= ~MVPP2_TXP_MTU_MAX; 2677 val |= mtu; 2678 mvpp2_write(port->priv, MVPP2_TXP_SCHED_MTU_REG, val); 2679 2680 /* TXP token size and all TXQs token size must be larger that MTU */ 2681 val = mvpp2_read(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG); 2682 size = val & MVPP2_TXP_TOKEN_SIZE_MAX; 2683 if (size < mtu) { 2684 size = mtu; 2685 val &= ~MVPP2_TXP_TOKEN_SIZE_MAX; 2686 val |= size; 2687 mvpp2_write(port->priv, MVPP2_TXP_SCHED_TOKEN_SIZE_REG, val); 2688 } 2689 2690 for (txq = 0; txq < port->ntxqs; txq++) { 2691 val = mvpp2_read(port->priv, 2692 MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq)); 2693 size = val & MVPP2_TXQ_TOKEN_SIZE_MAX; 2694 2695 if (size < mtu) { 2696 size = mtu; 2697 val &= ~MVPP2_TXQ_TOKEN_SIZE_MAX; 2698 val |= size; 2699 mvpp2_write(port->priv, 2700 MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq), 2701 val); 2702 } 2703 } 2704 } 2705 2706 /* Set the number of non-occupied descriptors threshold */ 2707 static void mvpp2_set_rxq_free_tresh(struct mvpp2_port *port, 2708 struct mvpp2_rx_queue *rxq) 2709 { 2710 u32 val; 2711 2712 mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id); 2713 2714 val = mvpp2_read(port->priv, MVPP2_RXQ_THRESH_REG); 2715 val &= ~MVPP2_RXQ_NON_OCCUPIED_MASK; 2716 val |= MSS_THRESHOLD_STOP << MVPP2_RXQ_NON_OCCUPIED_OFFSET; 2717 mvpp2_write(port->priv, MVPP2_RXQ_THRESH_REG, val); 2718 } 2719 2720 /* Set the number of packets that will be received before Rx interrupt 2721 * will be generated by HW. 2722 */ 2723 static void mvpp2_rx_pkts_coal_set(struct mvpp2_port *port, 2724 struct mvpp2_rx_queue *rxq) 2725 { 2726 unsigned int thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 2727 2728 if (rxq->pkts_coal > MVPP2_OCCUPIED_THRESH_MASK) 2729 rxq->pkts_coal = MVPP2_OCCUPIED_THRESH_MASK; 2730 2731 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_NUM_REG, rxq->id); 2732 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_THRESH_REG, 2733 rxq->pkts_coal); 2734 2735 put_cpu(); 2736 } 2737 2738 /* For some reason in the LSP this is done on each CPU. Why ? */ 2739 static void mvpp2_tx_pkts_coal_set(struct mvpp2_port *port, 2740 struct mvpp2_tx_queue *txq) 2741 { 2742 unsigned int thread; 2743 u32 val; 2744 2745 if (txq->done_pkts_coal > MVPP2_TXQ_THRESH_MASK) 2746 txq->done_pkts_coal = MVPP2_TXQ_THRESH_MASK; 2747 2748 val = (txq->done_pkts_coal << MVPP2_TXQ_THRESH_OFFSET); 2749 /* PKT-coalescing registers are per-queue + per-thread */ 2750 for (thread = 0; thread < MVPP2_MAX_THREADS; thread++) { 2751 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id); 2752 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_THRESH_REG, val); 2753 } 2754 } 2755 2756 static u32 mvpp2_usec_to_cycles(u32 usec, unsigned long clk_hz) 2757 { 2758 u64 tmp = (u64)clk_hz * usec; 2759 2760 do_div(tmp, USEC_PER_SEC); 2761 2762 return tmp > U32_MAX ? U32_MAX : tmp; 2763 } 2764 2765 static u32 mvpp2_cycles_to_usec(u32 cycles, unsigned long clk_hz) 2766 { 2767 u64 tmp = (u64)cycles * USEC_PER_SEC; 2768 2769 do_div(tmp, clk_hz); 2770 2771 return tmp > U32_MAX ? U32_MAX : tmp; 2772 } 2773 2774 /* Set the time delay in usec before Rx interrupt */ 2775 static void mvpp2_rx_time_coal_set(struct mvpp2_port *port, 2776 struct mvpp2_rx_queue *rxq) 2777 { 2778 unsigned long freq = port->priv->tclk; 2779 u32 val = mvpp2_usec_to_cycles(rxq->time_coal, freq); 2780 2781 if (val > MVPP2_MAX_ISR_RX_THRESHOLD) { 2782 rxq->time_coal = 2783 mvpp2_cycles_to_usec(MVPP2_MAX_ISR_RX_THRESHOLD, freq); 2784 2785 /* re-evaluate to get actual register value */ 2786 val = mvpp2_usec_to_cycles(rxq->time_coal, freq); 2787 } 2788 2789 mvpp2_write(port->priv, MVPP2_ISR_RX_THRESHOLD_REG(rxq->id), val); 2790 } 2791 2792 static void mvpp2_tx_time_coal_set(struct mvpp2_port *port) 2793 { 2794 unsigned long freq = port->priv->tclk; 2795 u32 val = mvpp2_usec_to_cycles(port->tx_time_coal, freq); 2796 2797 if (val > MVPP2_MAX_ISR_TX_THRESHOLD) { 2798 port->tx_time_coal = 2799 mvpp2_cycles_to_usec(MVPP2_MAX_ISR_TX_THRESHOLD, freq); 2800 2801 /* re-evaluate to get actual register value */ 2802 val = mvpp2_usec_to_cycles(port->tx_time_coal, freq); 2803 } 2804 2805 mvpp2_write(port->priv, MVPP2_ISR_TX_THRESHOLD_REG(port->id), val); 2806 } 2807 2808 /* Free Tx queue skbuffs */ 2809 static void mvpp2_txq_bufs_free(struct mvpp2_port *port, 2810 struct mvpp2_tx_queue *txq, 2811 struct mvpp2_txq_pcpu *txq_pcpu, int num) 2812 { 2813 struct xdp_frame_bulk bq; 2814 int i; 2815 2816 xdp_frame_bulk_init(&bq); 2817 2818 rcu_read_lock(); /* need for xdp_return_frame_bulk */ 2819 2820 for (i = 0; i < num; i++) { 2821 struct mvpp2_txq_pcpu_buf *tx_buf = 2822 txq_pcpu->buffs + txq_pcpu->txq_get_index; 2823 2824 if (!IS_TSO_HEADER(txq_pcpu, tx_buf->dma) && 2825 tx_buf->type != MVPP2_TYPE_XDP_TX) 2826 dma_unmap_single(port->dev->dev.parent, tx_buf->dma, 2827 tx_buf->size, DMA_TO_DEVICE); 2828 if (tx_buf->type == MVPP2_TYPE_SKB && tx_buf->skb) 2829 dev_kfree_skb_any(tx_buf->skb); 2830 else if (tx_buf->type == MVPP2_TYPE_XDP_TX || 2831 tx_buf->type == MVPP2_TYPE_XDP_NDO) 2832 xdp_return_frame_bulk(tx_buf->xdpf, &bq); 2833 2834 mvpp2_txq_inc_get(txq_pcpu); 2835 } 2836 xdp_flush_frame_bulk(&bq); 2837 2838 rcu_read_unlock(); 2839 } 2840 2841 static inline struct mvpp2_rx_queue *mvpp2_get_rx_queue(struct mvpp2_port *port, 2842 u32 cause) 2843 { 2844 int queue = fls(cause) - 1; 2845 2846 return port->rxqs[queue]; 2847 } 2848 2849 static inline struct mvpp2_tx_queue *mvpp2_get_tx_queue(struct mvpp2_port *port, 2850 u32 cause) 2851 { 2852 int queue = fls(cause) - 1; 2853 2854 return port->txqs[queue]; 2855 } 2856 2857 /* Handle end of transmission */ 2858 static void mvpp2_txq_done(struct mvpp2_port *port, struct mvpp2_tx_queue *txq, 2859 struct mvpp2_txq_pcpu *txq_pcpu) 2860 { 2861 struct netdev_queue *nq = netdev_get_tx_queue(port->dev, txq->log_id); 2862 int tx_done; 2863 2864 if (txq_pcpu->thread != mvpp2_cpu_to_thread(port->priv, smp_processor_id())) 2865 netdev_err(port->dev, "wrong cpu on the end of Tx processing\n"); 2866 2867 tx_done = mvpp2_txq_sent_desc_proc(port, txq); 2868 if (!tx_done) 2869 return; 2870 mvpp2_txq_bufs_free(port, txq, txq_pcpu, tx_done); 2871 2872 txq_pcpu->count -= tx_done; 2873 2874 if (netif_tx_queue_stopped(nq)) 2875 if (txq_pcpu->count <= txq_pcpu->wake_threshold) 2876 netif_tx_wake_queue(nq); 2877 } 2878 2879 static unsigned int mvpp2_tx_done(struct mvpp2_port *port, u32 cause, 2880 unsigned int thread) 2881 { 2882 struct mvpp2_tx_queue *txq; 2883 struct mvpp2_txq_pcpu *txq_pcpu; 2884 unsigned int tx_todo = 0; 2885 2886 while (cause) { 2887 txq = mvpp2_get_tx_queue(port, cause); 2888 if (!txq) 2889 break; 2890 2891 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 2892 2893 if (txq_pcpu->count) { 2894 mvpp2_txq_done(port, txq, txq_pcpu); 2895 tx_todo += txq_pcpu->count; 2896 } 2897 2898 cause &= ~(1 << txq->log_id); 2899 } 2900 return tx_todo; 2901 } 2902 2903 /* Rx/Tx queue initialization/cleanup methods */ 2904 2905 /* Allocate and initialize descriptors for aggr TXQ */ 2906 static int mvpp2_aggr_txq_init(struct platform_device *pdev, 2907 struct mvpp2_tx_queue *aggr_txq, 2908 unsigned int thread, struct mvpp2 *priv) 2909 { 2910 u32 txq_dma; 2911 2912 /* Allocate memory for TX descriptors */ 2913 aggr_txq->descs = dma_alloc_coherent(&pdev->dev, 2914 MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE, 2915 &aggr_txq->descs_dma, GFP_KERNEL); 2916 if (!aggr_txq->descs) 2917 return -ENOMEM; 2918 2919 aggr_txq->last_desc = MVPP2_AGGR_TXQ_SIZE - 1; 2920 2921 /* Aggr TXQ no reset WA */ 2922 aggr_txq->next_desc_to_proc = mvpp2_read(priv, 2923 MVPP2_AGGR_TXQ_INDEX_REG(thread)); 2924 2925 /* Set Tx descriptors queue starting address indirect 2926 * access 2927 */ 2928 if (priv->hw_version == MVPP21) 2929 txq_dma = aggr_txq->descs_dma; 2930 else 2931 txq_dma = aggr_txq->descs_dma >> 2932 MVPP22_AGGR_TXQ_DESC_ADDR_OFFS; 2933 2934 mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_ADDR_REG(thread), txq_dma); 2935 mvpp2_write(priv, MVPP2_AGGR_TXQ_DESC_SIZE_REG(thread), 2936 MVPP2_AGGR_TXQ_SIZE); 2937 2938 return 0; 2939 } 2940 2941 /* Create a specified Rx queue */ 2942 static int mvpp2_rxq_init(struct mvpp2_port *port, 2943 struct mvpp2_rx_queue *rxq) 2944 { 2945 struct mvpp2 *priv = port->priv; 2946 unsigned int thread; 2947 u32 rxq_dma; 2948 int err; 2949 2950 rxq->size = port->rx_ring_size; 2951 2952 /* Allocate memory for RX descriptors */ 2953 rxq->descs = dma_alloc_coherent(port->dev->dev.parent, 2954 rxq->size * MVPP2_DESC_ALIGNED_SIZE, 2955 &rxq->descs_dma, GFP_KERNEL); 2956 if (!rxq->descs) 2957 return -ENOMEM; 2958 2959 rxq->last_desc = rxq->size - 1; 2960 2961 /* Zero occupied and non-occupied counters - direct access */ 2962 mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0); 2963 2964 /* Set Rx descriptors queue starting address - indirect access */ 2965 thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 2966 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_NUM_REG, rxq->id); 2967 if (port->priv->hw_version == MVPP21) 2968 rxq_dma = rxq->descs_dma; 2969 else 2970 rxq_dma = rxq->descs_dma >> MVPP22_DESC_ADDR_OFFS; 2971 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_DESC_ADDR_REG, rxq_dma); 2972 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_DESC_SIZE_REG, rxq->size); 2973 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_INDEX_REG, 0); 2974 put_cpu(); 2975 2976 /* Set Offset */ 2977 mvpp2_rxq_offset_set(port, rxq->id, MVPP2_SKB_HEADROOM); 2978 2979 /* Set coalescing pkts and time */ 2980 mvpp2_rx_pkts_coal_set(port, rxq); 2981 mvpp2_rx_time_coal_set(port, rxq); 2982 2983 /* Set the number of non occupied descriptors threshold */ 2984 mvpp2_set_rxq_free_tresh(port, rxq); 2985 2986 /* Add number of descriptors ready for receiving packets */ 2987 mvpp2_rxq_status_update(port, rxq->id, 0, rxq->size); 2988 2989 if (priv->percpu_pools) { 2990 err = xdp_rxq_info_reg(&rxq->xdp_rxq_short, port->dev, rxq->logic_rxq, 0); 2991 if (err < 0) 2992 goto err_free_dma; 2993 2994 err = xdp_rxq_info_reg(&rxq->xdp_rxq_long, port->dev, rxq->logic_rxq, 0); 2995 if (err < 0) 2996 goto err_unregister_rxq_short; 2997 2998 /* Every RXQ has a pool for short and another for long packets */ 2999 err = xdp_rxq_info_reg_mem_model(&rxq->xdp_rxq_short, 3000 MEM_TYPE_PAGE_POOL, 3001 priv->page_pool[rxq->logic_rxq]); 3002 if (err < 0) 3003 goto err_unregister_rxq_long; 3004 3005 err = xdp_rxq_info_reg_mem_model(&rxq->xdp_rxq_long, 3006 MEM_TYPE_PAGE_POOL, 3007 priv->page_pool[rxq->logic_rxq + 3008 port->nrxqs]); 3009 if (err < 0) 3010 goto err_unregister_mem_rxq_short; 3011 } 3012 3013 return 0; 3014 3015 err_unregister_mem_rxq_short: 3016 xdp_rxq_info_unreg_mem_model(&rxq->xdp_rxq_short); 3017 err_unregister_rxq_long: 3018 xdp_rxq_info_unreg(&rxq->xdp_rxq_long); 3019 err_unregister_rxq_short: 3020 xdp_rxq_info_unreg(&rxq->xdp_rxq_short); 3021 err_free_dma: 3022 dma_free_coherent(port->dev->dev.parent, 3023 rxq->size * MVPP2_DESC_ALIGNED_SIZE, 3024 rxq->descs, rxq->descs_dma); 3025 return err; 3026 } 3027 3028 /* Push packets received by the RXQ to BM pool */ 3029 static void mvpp2_rxq_drop_pkts(struct mvpp2_port *port, 3030 struct mvpp2_rx_queue *rxq) 3031 { 3032 int rx_received, i; 3033 3034 rx_received = mvpp2_rxq_received(port, rxq->id); 3035 if (!rx_received) 3036 return; 3037 3038 for (i = 0; i < rx_received; i++) { 3039 struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq); 3040 u32 status = mvpp2_rxdesc_status_get(port, rx_desc); 3041 int pool; 3042 3043 pool = (status & MVPP2_RXD_BM_POOL_ID_MASK) >> 3044 MVPP2_RXD_BM_POOL_ID_OFFS; 3045 3046 mvpp2_bm_pool_put(port, pool, 3047 mvpp2_rxdesc_dma_addr_get(port, rx_desc), 3048 mvpp2_rxdesc_cookie_get(port, rx_desc)); 3049 } 3050 mvpp2_rxq_status_update(port, rxq->id, rx_received, rx_received); 3051 } 3052 3053 /* Cleanup Rx queue */ 3054 static void mvpp2_rxq_deinit(struct mvpp2_port *port, 3055 struct mvpp2_rx_queue *rxq) 3056 { 3057 unsigned int thread; 3058 3059 if (xdp_rxq_info_is_reg(&rxq->xdp_rxq_short)) 3060 xdp_rxq_info_unreg(&rxq->xdp_rxq_short); 3061 3062 if (xdp_rxq_info_is_reg(&rxq->xdp_rxq_long)) 3063 xdp_rxq_info_unreg(&rxq->xdp_rxq_long); 3064 3065 mvpp2_rxq_drop_pkts(port, rxq); 3066 3067 if (rxq->descs) 3068 dma_free_coherent(port->dev->dev.parent, 3069 rxq->size * MVPP2_DESC_ALIGNED_SIZE, 3070 rxq->descs, 3071 rxq->descs_dma); 3072 3073 rxq->descs = NULL; 3074 rxq->last_desc = 0; 3075 rxq->next_desc_to_proc = 0; 3076 rxq->descs_dma = 0; 3077 3078 /* Clear Rx descriptors queue starting address and size; 3079 * free descriptor number 3080 */ 3081 mvpp2_write(port->priv, MVPP2_RXQ_STATUS_REG(rxq->id), 0); 3082 thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 3083 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_NUM_REG, rxq->id); 3084 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_DESC_ADDR_REG, 0); 3085 mvpp2_thread_write(port->priv, thread, MVPP2_RXQ_DESC_SIZE_REG, 0); 3086 put_cpu(); 3087 } 3088 3089 /* Create and initialize a Tx queue */ 3090 static int mvpp2_txq_init(struct mvpp2_port *port, 3091 struct mvpp2_tx_queue *txq) 3092 { 3093 u32 val; 3094 unsigned int thread; 3095 int desc, desc_per_txq, tx_port_num; 3096 struct mvpp2_txq_pcpu *txq_pcpu; 3097 3098 txq->size = port->tx_ring_size; 3099 3100 /* Allocate memory for Tx descriptors */ 3101 txq->descs = dma_alloc_coherent(port->dev->dev.parent, 3102 txq->size * MVPP2_DESC_ALIGNED_SIZE, 3103 &txq->descs_dma, GFP_KERNEL); 3104 if (!txq->descs) 3105 return -ENOMEM; 3106 3107 txq->last_desc = txq->size - 1; 3108 3109 /* Set Tx descriptors queue starting address - indirect access */ 3110 thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 3111 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id); 3112 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_DESC_ADDR_REG, 3113 txq->descs_dma); 3114 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_DESC_SIZE_REG, 3115 txq->size & MVPP2_TXQ_DESC_SIZE_MASK); 3116 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_INDEX_REG, 0); 3117 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_RSVD_CLR_REG, 3118 txq->id << MVPP2_TXQ_RSVD_CLR_OFFSET); 3119 val = mvpp2_thread_read(port->priv, thread, MVPP2_TXQ_PENDING_REG); 3120 val &= ~MVPP2_TXQ_PENDING_MASK; 3121 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_PENDING_REG, val); 3122 3123 /* Calculate base address in prefetch buffer. We reserve 16 descriptors 3124 * for each existing TXQ. 3125 * TCONTS for PON port must be continuous from 0 to MVPP2_MAX_TCONT 3126 * GBE ports assumed to be continuous from 0 to MVPP2_MAX_PORTS 3127 */ 3128 desc_per_txq = 16; 3129 desc = (port->id * MVPP2_MAX_TXQ * desc_per_txq) + 3130 (txq->log_id * desc_per_txq); 3131 3132 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_PREF_BUF_REG, 3133 MVPP2_PREF_BUF_PTR(desc) | MVPP2_PREF_BUF_SIZE_16 | 3134 MVPP2_PREF_BUF_THRESH(desc_per_txq / 2)); 3135 put_cpu(); 3136 3137 /* WRR / EJP configuration - indirect access */ 3138 tx_port_num = mvpp2_egress_port(port); 3139 mvpp2_write(port->priv, MVPP2_TXP_SCHED_PORT_INDEX_REG, tx_port_num); 3140 3141 val = mvpp2_read(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id)); 3142 val &= ~MVPP2_TXQ_REFILL_PERIOD_ALL_MASK; 3143 val |= MVPP2_TXQ_REFILL_PERIOD_MASK(1); 3144 val |= MVPP2_TXQ_REFILL_TOKENS_ALL_MASK; 3145 mvpp2_write(port->priv, MVPP2_TXQ_SCHED_REFILL_REG(txq->log_id), val); 3146 3147 val = MVPP2_TXQ_TOKEN_SIZE_MAX; 3148 mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_SIZE_REG(txq->log_id), 3149 val); 3150 3151 for (thread = 0; thread < port->priv->nthreads; thread++) { 3152 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 3153 txq_pcpu->size = txq->size; 3154 txq_pcpu->buffs = kmalloc_objs(*txq_pcpu->buffs, txq_pcpu->size); 3155 if (!txq_pcpu->buffs) 3156 return -ENOMEM; 3157 3158 txq_pcpu->count = 0; 3159 txq_pcpu->reserved_num = 0; 3160 txq_pcpu->txq_put_index = 0; 3161 txq_pcpu->txq_get_index = 0; 3162 txq_pcpu->tso_headers = NULL; 3163 3164 txq_pcpu->stop_threshold = txq->size - MVPP2_MAX_SKB_DESCS; 3165 txq_pcpu->wake_threshold = txq_pcpu->stop_threshold / 2; 3166 3167 txq_pcpu->tso_headers = 3168 dma_alloc_coherent(port->dev->dev.parent, 3169 txq_pcpu->size * TSO_HEADER_SIZE, 3170 &txq_pcpu->tso_headers_dma, 3171 GFP_KERNEL); 3172 if (!txq_pcpu->tso_headers) 3173 return -ENOMEM; 3174 } 3175 3176 return 0; 3177 } 3178 3179 /* Free allocated TXQ resources */ 3180 static void mvpp2_txq_deinit(struct mvpp2_port *port, 3181 struct mvpp2_tx_queue *txq) 3182 { 3183 struct mvpp2_txq_pcpu *txq_pcpu; 3184 unsigned int thread; 3185 3186 for (thread = 0; thread < port->priv->nthreads; thread++) { 3187 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 3188 kfree(txq_pcpu->buffs); 3189 3190 if (txq_pcpu->tso_headers) 3191 dma_free_coherent(port->dev->dev.parent, 3192 txq_pcpu->size * TSO_HEADER_SIZE, 3193 txq_pcpu->tso_headers, 3194 txq_pcpu->tso_headers_dma); 3195 3196 txq_pcpu->tso_headers = NULL; 3197 } 3198 3199 if (txq->descs) 3200 dma_free_coherent(port->dev->dev.parent, 3201 txq->size * MVPP2_DESC_ALIGNED_SIZE, 3202 txq->descs, txq->descs_dma); 3203 3204 txq->descs = NULL; 3205 txq->last_desc = 0; 3206 txq->next_desc_to_proc = 0; 3207 txq->descs_dma = 0; 3208 3209 /* Set minimum bandwidth for disabled TXQs */ 3210 mvpp2_write(port->priv, MVPP2_TXQ_SCHED_TOKEN_CNTR_REG(txq->log_id), 0); 3211 3212 /* Set Tx descriptors queue starting address and size */ 3213 thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 3214 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id); 3215 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_DESC_ADDR_REG, 0); 3216 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_DESC_SIZE_REG, 0); 3217 put_cpu(); 3218 } 3219 3220 /* Cleanup Tx ports */ 3221 static void mvpp2_txq_clean(struct mvpp2_port *port, struct mvpp2_tx_queue *txq) 3222 { 3223 struct mvpp2_txq_pcpu *txq_pcpu; 3224 int delay, pending; 3225 unsigned int thread = mvpp2_cpu_to_thread(port->priv, get_cpu()); 3226 u32 val; 3227 3228 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_NUM_REG, txq->id); 3229 val = mvpp2_thread_read(port->priv, thread, MVPP2_TXQ_PREF_BUF_REG); 3230 val |= MVPP2_TXQ_DRAIN_EN_MASK; 3231 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_PREF_BUF_REG, val); 3232 3233 /* The napi queue has been stopped so wait for all packets 3234 * to be transmitted. 3235 */ 3236 delay = 0; 3237 do { 3238 if (delay >= MVPP2_TX_PENDING_TIMEOUT_MSEC) { 3239 netdev_warn(port->dev, 3240 "port %d: cleaning queue %d timed out\n", 3241 port->id, txq->log_id); 3242 break; 3243 } 3244 mdelay(1); 3245 delay++; 3246 3247 pending = mvpp2_thread_read(port->priv, thread, 3248 MVPP2_TXQ_PENDING_REG); 3249 pending &= MVPP2_TXQ_PENDING_MASK; 3250 } while (pending); 3251 3252 val &= ~MVPP2_TXQ_DRAIN_EN_MASK; 3253 mvpp2_thread_write(port->priv, thread, MVPP2_TXQ_PREF_BUF_REG, val); 3254 put_cpu(); 3255 3256 for (thread = 0; thread < port->priv->nthreads; thread++) { 3257 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 3258 3259 /* Release all packets */ 3260 mvpp2_txq_bufs_free(port, txq, txq_pcpu, txq_pcpu->count); 3261 3262 /* Reset queue */ 3263 txq_pcpu->count = 0; 3264 txq_pcpu->txq_put_index = 0; 3265 txq_pcpu->txq_get_index = 0; 3266 } 3267 } 3268 3269 /* Cleanup all Tx queues */ 3270 static void mvpp2_cleanup_txqs(struct mvpp2_port *port) 3271 { 3272 struct mvpp2_tx_queue *txq; 3273 int queue; 3274 u32 val; 3275 3276 val = mvpp2_read(port->priv, MVPP2_TX_PORT_FLUSH_REG); 3277 3278 /* Reset Tx ports and delete Tx queues */ 3279 val |= MVPP2_TX_PORT_FLUSH_MASK(port->id); 3280 mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val); 3281 3282 for (queue = 0; queue < port->ntxqs; queue++) { 3283 txq = port->txqs[queue]; 3284 mvpp2_txq_clean(port, txq); 3285 mvpp2_txq_deinit(port, txq); 3286 } 3287 3288 on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1); 3289 3290 val &= ~MVPP2_TX_PORT_FLUSH_MASK(port->id); 3291 mvpp2_write(port->priv, MVPP2_TX_PORT_FLUSH_REG, val); 3292 } 3293 3294 /* Cleanup all Rx queues */ 3295 static void mvpp2_cleanup_rxqs(struct mvpp2_port *port) 3296 { 3297 int queue; 3298 3299 for (queue = 0; queue < port->nrxqs; queue++) 3300 mvpp2_rxq_deinit(port, port->rxqs[queue]); 3301 3302 if (port->tx_fc) 3303 mvpp2_rxq_disable_fc(port); 3304 } 3305 3306 /* Init all Rx queues for port */ 3307 static int mvpp2_setup_rxqs(struct mvpp2_port *port) 3308 { 3309 int queue, err; 3310 3311 for (queue = 0; queue < port->nrxqs; queue++) { 3312 err = mvpp2_rxq_init(port, port->rxqs[queue]); 3313 if (err) 3314 goto err_cleanup; 3315 } 3316 3317 if (port->tx_fc) 3318 mvpp2_rxq_enable_fc(port); 3319 3320 return 0; 3321 3322 err_cleanup: 3323 mvpp2_cleanup_rxqs(port); 3324 return err; 3325 } 3326 3327 /* Init all tx queues for port */ 3328 static int mvpp2_setup_txqs(struct mvpp2_port *port) 3329 { 3330 struct mvpp2_tx_queue *txq; 3331 int queue, err; 3332 3333 for (queue = 0; queue < port->ntxqs; queue++) { 3334 txq = port->txqs[queue]; 3335 err = mvpp2_txq_init(port, txq); 3336 if (err) 3337 goto err_cleanup; 3338 3339 /* Assign this queue to a CPU */ 3340 if (queue < num_possible_cpus()) 3341 netif_set_xps_queue(port->dev, cpumask_of(queue), queue); 3342 } 3343 3344 if (port->has_tx_irqs) { 3345 mvpp2_tx_time_coal_set(port); 3346 for (queue = 0; queue < port->ntxqs; queue++) { 3347 txq = port->txqs[queue]; 3348 mvpp2_tx_pkts_coal_set(port, txq); 3349 } 3350 } 3351 3352 on_each_cpu(mvpp2_txq_sent_counter_clear, port, 1); 3353 return 0; 3354 3355 err_cleanup: 3356 mvpp2_cleanup_txqs(port); 3357 return err; 3358 } 3359 3360 /* The callback for per-port interrupt */ 3361 static irqreturn_t mvpp2_isr(int irq, void *dev_id) 3362 { 3363 struct mvpp2_queue_vector *qv = dev_id; 3364 3365 mvpp2_qvec_interrupt_disable(qv); 3366 3367 napi_schedule(&qv->napi); 3368 3369 return IRQ_HANDLED; 3370 } 3371 3372 static void mvpp2_isr_handle_ptp_queue(struct mvpp2_port *port, int nq) 3373 { 3374 struct skb_shared_hwtstamps shhwtstamps; 3375 struct mvpp2_hwtstamp_queue *queue; 3376 struct sk_buff *skb; 3377 void __iomem *ptp_q; 3378 unsigned int id; 3379 u32 r0, r1, r2; 3380 3381 ptp_q = port->priv->iface_base + MVPP22_PTP_BASE(port->gop_id); 3382 if (nq) 3383 ptp_q += MVPP22_PTP_TX_Q1_R0 - MVPP22_PTP_TX_Q0_R0; 3384 3385 queue = &port->tx_hwtstamp_queue[nq]; 3386 3387 while (1) { 3388 r0 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R0) & 0xffff; 3389 if (!r0) 3390 break; 3391 3392 r1 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R1) & 0xffff; 3393 r2 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R2) & 0xffff; 3394 3395 id = (r0 >> 1) & 31; 3396 3397 skb = queue->skb[id]; 3398 queue->skb[id] = NULL; 3399 if (skb) { 3400 u32 ts = r2 << 19 | r1 << 3 | r0 >> 13; 3401 3402 mvpp22_tai_tstamp(port->priv->tai, ts, &shhwtstamps); 3403 skb_tstamp_tx(skb, &shhwtstamps); 3404 dev_kfree_skb_any(skb); 3405 } 3406 } 3407 } 3408 3409 static void mvpp2_isr_handle_ptp(struct mvpp2_port *port) 3410 { 3411 void __iomem *ptp; 3412 u32 val; 3413 3414 ptp = port->priv->iface_base + MVPP22_PTP_BASE(port->gop_id); 3415 val = readl(ptp + MVPP22_PTP_INT_CAUSE); 3416 if (val & MVPP22_PTP_INT_CAUSE_QUEUE0) 3417 mvpp2_isr_handle_ptp_queue(port, 0); 3418 if (val & MVPP22_PTP_INT_CAUSE_QUEUE1) 3419 mvpp2_isr_handle_ptp_queue(port, 1); 3420 } 3421 3422 static void mvpp2_isr_handle_link(struct mvpp2_port *port, 3423 struct phylink_pcs *pcs, bool link) 3424 { 3425 struct net_device *dev = port->dev; 3426 3427 if (port->phylink) { 3428 phylink_pcs_change(pcs, link); 3429 return; 3430 } 3431 3432 if (!netif_running(dev)) 3433 return; 3434 3435 if (link) { 3436 mvpp2_interrupts_enable(port); 3437 3438 mvpp2_egress_enable(port); 3439 mvpp2_ingress_enable(port); 3440 netif_carrier_on(dev); 3441 netif_tx_wake_all_queues(dev); 3442 } else { 3443 netif_tx_stop_all_queues(dev); 3444 netif_carrier_off(dev); 3445 mvpp2_ingress_disable(port); 3446 mvpp2_egress_disable(port); 3447 3448 mvpp2_interrupts_disable(port); 3449 } 3450 } 3451 3452 static void mvpp2_isr_handle_xlg(struct mvpp2_port *port) 3453 { 3454 bool link; 3455 u32 val; 3456 3457 val = readl(port->base + MVPP22_XLG_INT_STAT); 3458 if (val & MVPP22_XLG_INT_STAT_LINK) { 3459 val = readl(port->base + MVPP22_XLG_STATUS); 3460 link = (val & MVPP22_XLG_STATUS_LINK_UP); 3461 mvpp2_isr_handle_link(port, &port->pcs_xlg, link); 3462 } 3463 } 3464 3465 static void mvpp2_isr_handle_gmac_internal(struct mvpp2_port *port) 3466 { 3467 bool link; 3468 u32 val; 3469 3470 if (phy_interface_mode_is_rgmii(port->phy_interface) || 3471 phy_interface_mode_is_8023z(port->phy_interface) || 3472 port->phy_interface == PHY_INTERFACE_MODE_SGMII) { 3473 val = readl(port->base + MVPP22_GMAC_INT_STAT); 3474 if (val & MVPP22_GMAC_INT_STAT_LINK) { 3475 val = readl(port->base + MVPP2_GMAC_STATUS0); 3476 link = (val & MVPP2_GMAC_STATUS0_LINK_UP); 3477 mvpp2_isr_handle_link(port, &port->pcs_gmac, link); 3478 } 3479 } 3480 } 3481 3482 /* Per-port interrupt for link status changes */ 3483 static irqreturn_t mvpp2_port_isr(int irq, void *dev_id) 3484 { 3485 struct mvpp2_port *port = (struct mvpp2_port *)dev_id; 3486 u32 val; 3487 3488 mvpp22_gop_mask_irq(port); 3489 3490 if (mvpp2_port_supports_xlg(port) && 3491 mvpp2_is_xlg(port->phy_interface)) { 3492 /* Check the external status register */ 3493 val = readl(port->base + MVPP22_XLG_EXT_INT_STAT); 3494 if (val & MVPP22_XLG_EXT_INT_STAT_XLG) 3495 mvpp2_isr_handle_xlg(port); 3496 if (val & MVPP22_XLG_EXT_INT_STAT_PTP) 3497 mvpp2_isr_handle_ptp(port); 3498 } else { 3499 /* If it's not the XLG, we must be using the GMAC. 3500 * Check the summary status. 3501 */ 3502 val = readl(port->base + MVPP22_GMAC_INT_SUM_STAT); 3503 if (val & MVPP22_GMAC_INT_SUM_STAT_INTERNAL) 3504 mvpp2_isr_handle_gmac_internal(port); 3505 if (val & MVPP22_GMAC_INT_SUM_STAT_PTP) 3506 mvpp2_isr_handle_ptp(port); 3507 } 3508 3509 mvpp22_gop_unmask_irq(port); 3510 return IRQ_HANDLED; 3511 } 3512 3513 static enum hrtimer_restart mvpp2_hr_timer_cb(struct hrtimer *timer) 3514 { 3515 struct net_device *dev; 3516 struct mvpp2_port *port; 3517 struct mvpp2_port_pcpu *port_pcpu; 3518 unsigned int tx_todo, cause; 3519 3520 port_pcpu = container_of(timer, struct mvpp2_port_pcpu, tx_done_timer); 3521 dev = port_pcpu->dev; 3522 3523 if (!netif_running(dev)) 3524 return HRTIMER_NORESTART; 3525 3526 port_pcpu->timer_scheduled = false; 3527 port = netdev_priv(dev); 3528 3529 /* Process all the Tx queues */ 3530 cause = (1 << port->ntxqs) - 1; 3531 tx_todo = mvpp2_tx_done(port, cause, 3532 mvpp2_cpu_to_thread(port->priv, smp_processor_id())); 3533 3534 /* Set the timer in case not all the packets were processed */ 3535 if (tx_todo && !port_pcpu->timer_scheduled) { 3536 port_pcpu->timer_scheduled = true; 3537 hrtimer_forward_now(&port_pcpu->tx_done_timer, 3538 MVPP2_TXDONE_HRTIMER_PERIOD_NS); 3539 3540 return HRTIMER_RESTART; 3541 } 3542 return HRTIMER_NORESTART; 3543 } 3544 3545 /* Main RX/TX processing routines */ 3546 3547 /* Display more error info */ 3548 static void mvpp2_rx_error(struct mvpp2_port *port, 3549 struct mvpp2_rx_desc *rx_desc) 3550 { 3551 u32 status = mvpp2_rxdesc_status_get(port, rx_desc); 3552 size_t sz = mvpp2_rxdesc_size_get(port, rx_desc); 3553 char *err_str = NULL; 3554 3555 switch (status & MVPP2_RXD_ERR_CODE_MASK) { 3556 case MVPP2_RXD_ERR_CRC: 3557 err_str = "crc"; 3558 break; 3559 case MVPP2_RXD_ERR_OVERRUN: 3560 err_str = "overrun"; 3561 break; 3562 case MVPP2_RXD_ERR_RESOURCE: 3563 err_str = "resource"; 3564 break; 3565 } 3566 if (err_str && net_ratelimit()) 3567 netdev_err(port->dev, 3568 "bad rx status %08x (%s error), size=%zu\n", 3569 status, err_str, sz); 3570 } 3571 3572 /* Handle RX checksum offload */ 3573 static int mvpp2_rx_csum(struct mvpp2_port *port, u32 status) 3574 { 3575 if (((status & MVPP2_RXD_L3_IP4) && 3576 !(status & MVPP2_RXD_IP4_HEADER_ERR)) || 3577 (status & MVPP2_RXD_L3_IP6)) 3578 if (((status & MVPP2_RXD_L4_UDP) || 3579 (status & MVPP2_RXD_L4_TCP)) && 3580 (status & MVPP2_RXD_L4_CSUM_OK)) 3581 return CHECKSUM_UNNECESSARY; 3582 3583 return CHECKSUM_NONE; 3584 } 3585 3586 /* Allocate a new skb and add it to BM pool */ 3587 static int mvpp2_rx_refill(struct mvpp2_port *port, 3588 struct mvpp2_bm_pool *bm_pool, 3589 struct page_pool *page_pool, int pool) 3590 { 3591 dma_addr_t dma_addr; 3592 phys_addr_t phys_addr; 3593 void *buf; 3594 3595 buf = mvpp2_buf_alloc(port, bm_pool, page_pool, 3596 &dma_addr, &phys_addr, GFP_ATOMIC); 3597 if (!buf) 3598 return -ENOMEM; 3599 3600 mvpp2_bm_pool_put(port, pool, dma_addr, phys_addr); 3601 3602 return 0; 3603 } 3604 3605 /* Handle tx checksum */ 3606 static u32 mvpp2_skb_tx_csum(struct mvpp2_port *port, struct sk_buff *skb) 3607 { 3608 if (skb->ip_summed == CHECKSUM_PARTIAL) { 3609 int ip_hdr_len = 0; 3610 u8 l4_proto; 3611 __be16 l3_proto = vlan_get_protocol(skb); 3612 3613 if (l3_proto == htons(ETH_P_IP)) { 3614 struct iphdr *ip4h = ip_hdr(skb); 3615 3616 /* Calculate IPv4 checksum and L4 checksum */ 3617 ip_hdr_len = ip4h->ihl; 3618 l4_proto = ip4h->protocol; 3619 } else if (l3_proto == htons(ETH_P_IPV6)) { 3620 struct ipv6hdr *ip6h = ipv6_hdr(skb); 3621 3622 /* Read l4_protocol from one of IPv6 extra headers */ 3623 if (skb_network_header_len(skb) > 0) 3624 ip_hdr_len = (skb_network_header_len(skb) >> 2); 3625 l4_proto = ip6h->nexthdr; 3626 } else { 3627 return MVPP2_TXD_L4_CSUM_NOT; 3628 } 3629 3630 return mvpp2_txq_desc_csum(skb_network_offset(skb), 3631 l3_proto, ip_hdr_len, l4_proto); 3632 } 3633 3634 return MVPP2_TXD_L4_CSUM_NOT | MVPP2_TXD_IP_CSUM_DISABLE; 3635 } 3636 3637 static void mvpp2_xdp_finish_tx(struct mvpp2_port *port, u16 txq_id, int nxmit, int nxmit_byte) 3638 { 3639 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 3640 struct mvpp2_tx_queue *aggr_txq; 3641 struct mvpp2_txq_pcpu *txq_pcpu; 3642 struct mvpp2_tx_queue *txq; 3643 struct netdev_queue *nq; 3644 3645 txq = port->txqs[txq_id]; 3646 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 3647 nq = netdev_get_tx_queue(port->dev, txq_id); 3648 aggr_txq = &port->priv->aggr_txqs[thread]; 3649 3650 txq_pcpu->reserved_num -= nxmit; 3651 txq_pcpu->count += nxmit; 3652 aggr_txq->count += nxmit; 3653 3654 /* Enable transmit */ 3655 wmb(); 3656 mvpp2_aggr_txq_pend_desc_add(port, nxmit); 3657 3658 if (txq_pcpu->count >= txq_pcpu->stop_threshold) 3659 netif_tx_stop_queue(nq); 3660 3661 /* Finalize TX processing */ 3662 if (!port->has_tx_irqs && txq_pcpu->count >= txq->done_pkts_coal) 3663 mvpp2_txq_done(port, txq, txq_pcpu); 3664 } 3665 3666 static int 3667 mvpp2_xdp_submit_frame(struct mvpp2_port *port, u16 txq_id, 3668 struct xdp_frame *xdpf, bool dma_map) 3669 { 3670 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 3671 u32 tx_cmd = MVPP2_TXD_L4_CSUM_NOT | MVPP2_TXD_IP_CSUM_DISABLE | 3672 MVPP2_TXD_F_DESC | MVPP2_TXD_L_DESC; 3673 enum mvpp2_tx_buf_type buf_type; 3674 struct mvpp2_txq_pcpu *txq_pcpu; 3675 struct mvpp2_tx_queue *aggr_txq; 3676 struct mvpp2_tx_desc *tx_desc; 3677 struct mvpp2_tx_queue *txq; 3678 int ret = MVPP2_XDP_TX; 3679 dma_addr_t dma_addr; 3680 3681 txq = port->txqs[txq_id]; 3682 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 3683 aggr_txq = &port->priv->aggr_txqs[thread]; 3684 3685 /* Check number of available descriptors */ 3686 if (mvpp2_aggr_desc_num_check(port, aggr_txq, 1) || 3687 mvpp2_txq_reserved_desc_num_proc(port, txq, txq_pcpu, 1)) { 3688 ret = MVPP2_XDP_DROPPED; 3689 goto out; 3690 } 3691 3692 /* Get a descriptor for the first part of the packet */ 3693 tx_desc = mvpp2_txq_next_desc_get(aggr_txq); 3694 mvpp2_txdesc_txq_set(port, tx_desc, txq->id); 3695 mvpp2_txdesc_size_set(port, tx_desc, xdpf->len); 3696 3697 if (dma_map) { 3698 /* XDP_REDIRECT or AF_XDP */ 3699 dma_addr = dma_map_single(port->dev->dev.parent, xdpf->data, 3700 xdpf->len, DMA_TO_DEVICE); 3701 3702 if (unlikely(dma_mapping_error(port->dev->dev.parent, dma_addr))) { 3703 mvpp2_txq_desc_put(txq); 3704 ret = MVPP2_XDP_DROPPED; 3705 goto out; 3706 } 3707 3708 buf_type = MVPP2_TYPE_XDP_NDO; 3709 } else { 3710 /* XDP_TX */ 3711 struct page *page = virt_to_page(xdpf->data); 3712 3713 dma_addr = page_pool_get_dma_addr(page) + 3714 sizeof(*xdpf) + xdpf->headroom; 3715 dma_sync_single_for_device(port->dev->dev.parent, dma_addr, 3716 xdpf->len, DMA_BIDIRECTIONAL); 3717 3718 buf_type = MVPP2_TYPE_XDP_TX; 3719 } 3720 3721 mvpp2_txdesc_dma_addr_set(port, tx_desc, dma_addr); 3722 3723 mvpp2_txdesc_cmd_set(port, tx_desc, tx_cmd); 3724 mvpp2_txq_inc_put(port, txq_pcpu, xdpf, tx_desc, buf_type); 3725 3726 out: 3727 return ret; 3728 } 3729 3730 static int 3731 mvpp2_xdp_xmit_back(struct mvpp2_port *port, struct xdp_buff *xdp) 3732 { 3733 struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats); 3734 struct xdp_frame *xdpf; 3735 u16 txq_id; 3736 int ret; 3737 3738 xdpf = xdp_convert_buff_to_frame(xdp); 3739 if (unlikely(!xdpf)) 3740 return MVPP2_XDP_DROPPED; 3741 3742 /* The first of the TX queues are used for XPS, 3743 * the second half for XDP_TX 3744 */ 3745 txq_id = mvpp2_cpu_to_thread(port->priv, smp_processor_id()) + (port->ntxqs / 2); 3746 3747 ret = mvpp2_xdp_submit_frame(port, txq_id, xdpf, false); 3748 if (ret == MVPP2_XDP_TX) { 3749 u64_stats_update_begin(&stats->syncp); 3750 stats->tx_bytes += xdpf->len; 3751 stats->tx_packets++; 3752 stats->xdp_tx++; 3753 u64_stats_update_end(&stats->syncp); 3754 3755 mvpp2_xdp_finish_tx(port, txq_id, 1, xdpf->len); 3756 } else { 3757 u64_stats_update_begin(&stats->syncp); 3758 stats->xdp_tx_err++; 3759 u64_stats_update_end(&stats->syncp); 3760 } 3761 3762 return ret; 3763 } 3764 3765 static int 3766 mvpp2_xdp_xmit(struct net_device *dev, int num_frame, 3767 struct xdp_frame **frames, u32 flags) 3768 { 3769 struct mvpp2_port *port = netdev_priv(dev); 3770 int i, nxmit_byte = 0, nxmit = 0; 3771 struct mvpp2_pcpu_stats *stats; 3772 u16 txq_id; 3773 u32 ret; 3774 3775 if (unlikely(test_bit(0, &port->state))) 3776 return -ENETDOWN; 3777 3778 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 3779 return -EINVAL; 3780 3781 /* The first of the TX queues are used for XPS, 3782 * the second half for XDP_TX 3783 */ 3784 txq_id = mvpp2_cpu_to_thread(port->priv, smp_processor_id()) + (port->ntxqs / 2); 3785 3786 for (i = 0; i < num_frame; i++) { 3787 ret = mvpp2_xdp_submit_frame(port, txq_id, frames[i], true); 3788 if (ret != MVPP2_XDP_TX) 3789 break; 3790 3791 nxmit_byte += frames[i]->len; 3792 nxmit++; 3793 } 3794 3795 if (likely(nxmit > 0)) 3796 mvpp2_xdp_finish_tx(port, txq_id, nxmit, nxmit_byte); 3797 3798 stats = this_cpu_ptr(port->stats); 3799 u64_stats_update_begin(&stats->syncp); 3800 stats->tx_bytes += nxmit_byte; 3801 stats->tx_packets += nxmit; 3802 stats->xdp_xmit += nxmit; 3803 stats->xdp_xmit_err += num_frame - nxmit; 3804 u64_stats_update_end(&stats->syncp); 3805 3806 return nxmit; 3807 } 3808 3809 static int 3810 mvpp2_run_xdp(struct mvpp2_port *port, struct bpf_prog *prog, 3811 struct xdp_buff *xdp, struct page_pool *pp, 3812 struct mvpp2_pcpu_stats *stats) 3813 { 3814 unsigned int len, sync, err; 3815 struct page *page; 3816 u32 ret, act; 3817 3818 len = xdp->data_end - xdp->data_hard_start - MVPP2_SKB_HEADROOM; 3819 act = bpf_prog_run_xdp(prog, xdp); 3820 3821 /* Due xdp_adjust_tail: DMA sync for_device cover max len CPU touch */ 3822 sync = xdp->data_end - xdp->data_hard_start - MVPP2_SKB_HEADROOM; 3823 sync = max(sync, len); 3824 3825 switch (act) { 3826 case XDP_PASS: 3827 stats->xdp_pass++; 3828 ret = MVPP2_XDP_PASS; 3829 break; 3830 case XDP_REDIRECT: 3831 err = xdp_do_redirect(port->dev, xdp, prog); 3832 if (unlikely(err)) { 3833 ret = MVPP2_XDP_DROPPED; 3834 page = virt_to_head_page(xdp->data); 3835 page_pool_put_page(pp, page, sync, true); 3836 } else { 3837 ret = MVPP2_XDP_REDIR; 3838 stats->xdp_redirect++; 3839 } 3840 break; 3841 case XDP_TX: 3842 ret = mvpp2_xdp_xmit_back(port, xdp); 3843 if (ret != MVPP2_XDP_TX) { 3844 page = virt_to_head_page(xdp->data); 3845 page_pool_put_page(pp, page, sync, true); 3846 } 3847 break; 3848 default: 3849 bpf_warn_invalid_xdp_action(port->dev, prog, act); 3850 fallthrough; 3851 case XDP_ABORTED: 3852 trace_xdp_exception(port->dev, prog, act); 3853 fallthrough; 3854 case XDP_DROP: 3855 page = virt_to_head_page(xdp->data); 3856 page_pool_put_page(pp, page, sync, true); 3857 ret = MVPP2_XDP_DROPPED; 3858 stats->xdp_drop++; 3859 break; 3860 } 3861 3862 return ret; 3863 } 3864 3865 static void mvpp2_buff_hdr_pool_put(struct mvpp2_port *port, struct mvpp2_rx_desc *rx_desc, 3866 int pool, u32 rx_status) 3867 { 3868 phys_addr_t phys_addr, phys_addr_next; 3869 dma_addr_t dma_addr, dma_addr_next; 3870 struct mvpp2_buff_hdr *buff_hdr; 3871 3872 phys_addr = mvpp2_rxdesc_dma_addr_get(port, rx_desc); 3873 dma_addr = mvpp2_rxdesc_cookie_get(port, rx_desc); 3874 3875 do { 3876 buff_hdr = (struct mvpp2_buff_hdr *)phys_to_virt(phys_addr); 3877 3878 phys_addr_next = le32_to_cpu(buff_hdr->next_phys_addr); 3879 dma_addr_next = le32_to_cpu(buff_hdr->next_dma_addr); 3880 3881 if (port->priv->hw_version >= MVPP22) { 3882 phys_addr_next |= ((u64)buff_hdr->next_phys_addr_high << 32); 3883 dma_addr_next |= ((u64)buff_hdr->next_dma_addr_high << 32); 3884 } 3885 3886 mvpp2_bm_pool_put(port, pool, dma_addr, phys_addr); 3887 3888 phys_addr = phys_addr_next; 3889 dma_addr = dma_addr_next; 3890 3891 } while (!MVPP2_B_HDR_INFO_IS_LAST(le16_to_cpu(buff_hdr->info))); 3892 } 3893 3894 /* Main rx processing */ 3895 static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi, 3896 int rx_todo, struct mvpp2_rx_queue *rxq) 3897 { 3898 struct net_device *dev = port->dev; 3899 struct mvpp2_pcpu_stats ps = {}; 3900 enum dma_data_direction dma_dir; 3901 struct bpf_prog *xdp_prog; 3902 struct xdp_buff xdp; 3903 int rx_received; 3904 int rx_done = 0; 3905 u32 xdp_ret = 0; 3906 3907 xdp_prog = READ_ONCE(port->xdp_prog); 3908 3909 /* Get number of received packets and clamp the to-do */ 3910 rx_received = mvpp2_rxq_received(port, rxq->id); 3911 if (rx_todo > rx_received) 3912 rx_todo = rx_received; 3913 3914 while (rx_done < rx_todo) { 3915 struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq); 3916 u32 rx_status, timestamp, metasize = 0; 3917 struct mvpp2_bm_pool *bm_pool; 3918 struct page_pool *pp = NULL; 3919 struct sk_buff *skb; 3920 unsigned int frag_size, rx_sync_size; 3921 dma_addr_t dma_addr; 3922 phys_addr_t phys_addr; 3923 int pool, rx_bytes, rx_offset, err, ret; 3924 struct page *page; 3925 void *data; 3926 3927 phys_addr = mvpp2_rxdesc_cookie_get(port, rx_desc); 3928 data = (void *)phys_to_virt(phys_addr); 3929 page = virt_to_page(data); 3930 prefetch(page); 3931 3932 rx_done++; 3933 rx_status = mvpp2_rxdesc_status_get(port, rx_desc); 3934 rx_bytes = mvpp2_rxdesc_size_get(port, rx_desc); 3935 rx_bytes -= MVPP2_MH_SIZE; 3936 rx_sync_size = rx_bytes + MVPP2_MH_SIZE; 3937 rx_offset = MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM; 3938 dma_addr = mvpp2_rxdesc_dma_addr_get(port, rx_desc); 3939 3940 pool = (rx_status & MVPP2_RXD_BM_POOL_ID_MASK) >> 3941 MVPP2_RXD_BM_POOL_ID_OFFS; 3942 bm_pool = &port->priv->bm_pools[pool]; 3943 3944 if (port->priv->percpu_pools) { 3945 pp = port->priv->page_pool[pool]; 3946 dma_dir = page_pool_get_dma_dir(pp); 3947 } else { 3948 dma_dir = DMA_FROM_DEVICE; 3949 } 3950 3951 dma_sync_single_range_for_cpu(dev->dev.parent, dma_addr, 3952 MVPP2_SKB_HEADROOM, 3953 rx_sync_size, 3954 dma_dir); 3955 3956 /* Buffer header not supported */ 3957 if (rx_status & MVPP2_RXD_BUF_HDR) 3958 goto err_drop_frame; 3959 3960 /* In case of an error, release the requested buffer pointer 3961 * to the Buffer Manager. This request process is controlled 3962 * by the hardware, and the information about the buffer is 3963 * comprised by the RX descriptor. 3964 */ 3965 if (rx_status & MVPP2_RXD_ERR_SUMMARY) 3966 goto err_drop_frame; 3967 3968 /* Prefetch header */ 3969 prefetch(data + MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM); 3970 3971 if (bm_pool->frag_size > PAGE_SIZE) 3972 frag_size = 0; 3973 else 3974 frag_size = bm_pool->frag_size; 3975 3976 err = mvpp2_rx_refill(port, bm_pool, pp, pool); 3977 if (err) { 3978 netdev_err(port->dev, "failed to refill BM pools\n"); 3979 goto err_drop_frame; 3980 } 3981 3982 if (xdp_prog) { 3983 struct xdp_rxq_info *xdp_rxq; 3984 3985 if (bm_pool->pkt_size == MVPP2_BM_SHORT_PKT_SIZE) 3986 xdp_rxq = &rxq->xdp_rxq_short; 3987 else 3988 xdp_rxq = &rxq->xdp_rxq_long; 3989 3990 xdp_init_buff(&xdp, bm_pool->frag_size, xdp_rxq); 3991 xdp_prepare_buff(&xdp, data, 3992 MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM, 3993 rx_bytes, true); 3994 3995 ret = mvpp2_run_xdp(port, xdp_prog, &xdp, pp, &ps); 3996 3997 if (ret) { 3998 xdp_ret |= ret; 3999 ps.rx_packets++; 4000 ps.rx_bytes += rx_bytes; 4001 continue; 4002 } 4003 4004 rx_sync_size = max_t(unsigned int, rx_sync_size, 4005 xdp.data_end - xdp.data_hard_start - 4006 MVPP2_SKB_HEADROOM); 4007 4008 /* Update offset and length to reflect any XDP adjustments. */ 4009 rx_offset = xdp.data - data; 4010 rx_bytes = xdp.data_end - xdp.data; 4011 4012 metasize = xdp.data - xdp.data_meta; 4013 } 4014 4015 if (frag_size) 4016 skb = build_skb(data, frag_size); 4017 else 4018 skb = slab_build_skb(data); 4019 if (!skb) { 4020 netdev_warn(port->dev, "skb build failed\n"); 4021 if (pp) { 4022 page_pool_put_page(pp, virt_to_head_page(data), 4023 rx_sync_size, true); 4024 } else { 4025 dma_unmap_single_attrs(dev->dev.parent, dma_addr, 4026 bm_pool->buf_size, 4027 DMA_FROM_DEVICE, 4028 DMA_ATTR_SKIP_CPU_SYNC); 4029 mvpp2_frag_free(bm_pool, pp, data); 4030 } 4031 goto err_drop_frame_retired; 4032 } 4033 if (pp) 4034 skb_mark_for_recycle(skb); 4035 4036 /* If we have RX hardware timestamping enabled, grab the 4037 * timestamp from the queue and convert. 4038 */ 4039 if (mvpp22_rx_hwtstamping(port)) { 4040 timestamp = le32_to_cpu(rx_desc->pp22.timestamp); 4041 mvpp22_tai_tstamp(port->priv->tai, timestamp, 4042 skb_hwtstamps(skb)); 4043 } 4044 4045 if (!pp) 4046 dma_unmap_single_attrs(dev->dev.parent, dma_addr, 4047 bm_pool->buf_size, DMA_FROM_DEVICE, 4048 DMA_ATTR_SKIP_CPU_SYNC); 4049 4050 ps.rx_packets++; 4051 ps.rx_bytes += rx_bytes; 4052 4053 skb_reserve(skb, rx_offset); 4054 skb_put(skb, rx_bytes); 4055 if (metasize) 4056 skb_metadata_set(skb, metasize); 4057 skb->ip_summed = mvpp2_rx_csum(port, rx_status); 4058 skb->protocol = eth_type_trans(skb, dev); 4059 4060 napi_gro_receive(napi, skb); 4061 continue; 4062 4063 err_drop_frame: 4064 /* Return the buffer to the pool */ 4065 if (rx_status & MVPP2_RXD_BUF_HDR) 4066 mvpp2_buff_hdr_pool_put(port, rx_desc, pool, rx_status); 4067 else 4068 mvpp2_bm_pool_put(port, pool, dma_addr, phys_addr); 4069 err_drop_frame_retired: 4070 dev->stats.rx_errors++; 4071 mvpp2_rx_error(port, rx_desc); 4072 } 4073 4074 if (xdp_ret & MVPP2_XDP_REDIR) 4075 xdp_do_flush(); 4076 4077 if (ps.rx_packets) { 4078 struct mvpp2_pcpu_stats *stats = this_cpu_ptr(port->stats); 4079 4080 u64_stats_update_begin(&stats->syncp); 4081 stats->rx_packets += ps.rx_packets; 4082 stats->rx_bytes += ps.rx_bytes; 4083 /* xdp */ 4084 stats->xdp_redirect += ps.xdp_redirect; 4085 stats->xdp_pass += ps.xdp_pass; 4086 stats->xdp_drop += ps.xdp_drop; 4087 u64_stats_update_end(&stats->syncp); 4088 } 4089 4090 /* Update Rx queue management counters */ 4091 wmb(); 4092 mvpp2_rxq_status_update(port, rxq->id, rx_done, rx_done); 4093 4094 return rx_todo; 4095 } 4096 4097 static inline void 4098 tx_desc_unmap_put(struct mvpp2_port *port, struct mvpp2_tx_queue *txq, 4099 struct mvpp2_tx_desc *desc) 4100 { 4101 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 4102 struct mvpp2_txq_pcpu *txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 4103 4104 dma_addr_t buf_dma_addr = 4105 mvpp2_txdesc_dma_addr_get(port, desc); 4106 size_t buf_sz = 4107 mvpp2_txdesc_size_get(port, desc); 4108 if (!IS_TSO_HEADER(txq_pcpu, buf_dma_addr)) 4109 dma_unmap_single(port->dev->dev.parent, buf_dma_addr, 4110 buf_sz, DMA_TO_DEVICE); 4111 mvpp2_txq_desc_put(txq); 4112 } 4113 4114 static void mvpp2_txdesc_clear_ptp(struct mvpp2_port *port, 4115 struct mvpp2_tx_desc *desc) 4116 { 4117 /* We only need to clear the low bits */ 4118 if (port->priv->hw_version >= MVPP22) 4119 desc->pp22.ptp_descriptor &= 4120 cpu_to_le32(~MVPP22_PTP_DESC_MASK_LOW); 4121 } 4122 4123 static bool mvpp2_tx_hw_tstamp(struct mvpp2_port *port, 4124 struct mvpp2_tx_desc *tx_desc, 4125 struct sk_buff *skb) 4126 { 4127 struct mvpp2_hwtstamp_queue *queue; 4128 unsigned int mtype, type, i; 4129 struct ptp_header *hdr; 4130 u64 ptpdesc; 4131 4132 if (port->priv->hw_version == MVPP21 || 4133 port->tx_hwtstamp_type == HWTSTAMP_TX_OFF) 4134 return false; 4135 4136 type = ptp_classify_raw(skb); 4137 if (!type) 4138 return false; 4139 4140 hdr = ptp_parse_header(skb, type); 4141 if (!hdr) 4142 return false; 4143 4144 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 4145 4146 ptpdesc = MVPP22_PTP_MACTIMESTAMPINGEN | 4147 MVPP22_PTP_ACTION_CAPTURE; 4148 queue = &port->tx_hwtstamp_queue[0]; 4149 4150 switch (type & PTP_CLASS_VMASK) { 4151 case PTP_CLASS_V1: 4152 ptpdesc |= MVPP22_PTP_PACKETFORMAT(MVPP22_PTP_PKT_FMT_PTPV1); 4153 break; 4154 4155 case PTP_CLASS_V2: 4156 ptpdesc |= MVPP22_PTP_PACKETFORMAT(MVPP22_PTP_PKT_FMT_PTPV2); 4157 mtype = hdr->tsmt & 15; 4158 /* Direct PTP Sync messages to queue 1 */ 4159 if (mtype == 0) { 4160 ptpdesc |= MVPP22_PTP_TIMESTAMPQUEUESELECT; 4161 queue = &port->tx_hwtstamp_queue[1]; 4162 } 4163 break; 4164 } 4165 4166 /* Take a reference on the skb and insert into our queue */ 4167 i = queue->next; 4168 queue->next = (i + 1) & 31; 4169 if (queue->skb[i]) 4170 dev_kfree_skb_any(queue->skb[i]); 4171 queue->skb[i] = skb_get(skb); 4172 4173 ptpdesc |= MVPP22_PTP_TIMESTAMPENTRYID(i); 4174 4175 /* 4176 * 3:0 - PTPAction 4177 * 6:4 - PTPPacketFormat 4178 * 7 - PTP_CF_WraparoundCheckEn 4179 * 9:8 - IngressTimestampSeconds[1:0] 4180 * 10 - Reserved 4181 * 11 - MACTimestampingEn 4182 * 17:12 - PTP_TimestampQueueEntryID[5:0] 4183 * 18 - PTPTimestampQueueSelect 4184 * 19 - UDPChecksumUpdateEn 4185 * 27:20 - TimestampOffset 4186 * PTP, NTPTransmit, OWAMP/TWAMP - L3 to PTP header 4187 * NTPTs, Y.1731 - L3 to timestamp entry 4188 * 35:28 - UDP Checksum Offset 4189 * 4190 * stored in tx descriptor bits 75:64 (11:0) and 191:168 (35:12) 4191 */ 4192 tx_desc->pp22.ptp_descriptor &= 4193 cpu_to_le32(~MVPP22_PTP_DESC_MASK_LOW); 4194 tx_desc->pp22.ptp_descriptor |= 4195 cpu_to_le32(ptpdesc & MVPP22_PTP_DESC_MASK_LOW); 4196 tx_desc->pp22.buf_dma_addr_ptp &= cpu_to_le64(~0xffffff0000000000ULL); 4197 tx_desc->pp22.buf_dma_addr_ptp |= cpu_to_le64((ptpdesc >> 12) << 40); 4198 4199 return true; 4200 } 4201 4202 /* Handle tx fragmentation processing */ 4203 static int mvpp2_tx_frag_process(struct mvpp2_port *port, struct sk_buff *skb, 4204 struct mvpp2_tx_queue *aggr_txq, 4205 struct mvpp2_tx_queue *txq) 4206 { 4207 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 4208 struct mvpp2_txq_pcpu *txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 4209 struct mvpp2_tx_desc *tx_desc; 4210 int i; 4211 dma_addr_t buf_dma_addr; 4212 4213 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 4214 skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 4215 void *addr = skb_frag_address(frag); 4216 4217 tx_desc = mvpp2_txq_next_desc_get(aggr_txq); 4218 mvpp2_txdesc_clear_ptp(port, tx_desc); 4219 mvpp2_txdesc_txq_set(port, tx_desc, txq->id); 4220 mvpp2_txdesc_size_set(port, tx_desc, skb_frag_size(frag)); 4221 4222 buf_dma_addr = dma_map_single(port->dev->dev.parent, addr, 4223 skb_frag_size(frag), 4224 DMA_TO_DEVICE); 4225 if (dma_mapping_error(port->dev->dev.parent, buf_dma_addr)) { 4226 mvpp2_txq_desc_put(txq); 4227 goto cleanup; 4228 } 4229 4230 mvpp2_txdesc_dma_addr_set(port, tx_desc, buf_dma_addr); 4231 4232 if (i == (skb_shinfo(skb)->nr_frags - 1)) { 4233 /* Last descriptor */ 4234 mvpp2_txdesc_cmd_set(port, tx_desc, 4235 MVPP2_TXD_L_DESC); 4236 mvpp2_txq_inc_put(port, txq_pcpu, skb, tx_desc, MVPP2_TYPE_SKB); 4237 } else { 4238 /* Descriptor in the middle: Not First, Not Last */ 4239 mvpp2_txdesc_cmd_set(port, tx_desc, 0); 4240 mvpp2_txq_inc_put(port, txq_pcpu, NULL, tx_desc, MVPP2_TYPE_SKB); 4241 } 4242 } 4243 4244 return 0; 4245 cleanup: 4246 /* Release all descriptors that were used to map fragments of 4247 * this packet, as well as the corresponding DMA mappings 4248 */ 4249 for (i = i - 1; i >= 0; i--) { 4250 tx_desc = txq->descs + i; 4251 tx_desc_unmap_put(port, txq, tx_desc); 4252 } 4253 4254 return -ENOMEM; 4255 } 4256 4257 static inline void mvpp2_tso_put_hdr(struct sk_buff *skb, 4258 struct net_device *dev, 4259 struct mvpp2_tx_queue *txq, 4260 struct mvpp2_tx_queue *aggr_txq, 4261 struct mvpp2_txq_pcpu *txq_pcpu, 4262 int hdr_sz) 4263 { 4264 struct mvpp2_port *port = netdev_priv(dev); 4265 struct mvpp2_tx_desc *tx_desc = mvpp2_txq_next_desc_get(aggr_txq); 4266 dma_addr_t addr; 4267 4268 mvpp2_txdesc_clear_ptp(port, tx_desc); 4269 mvpp2_txdesc_txq_set(port, tx_desc, txq->id); 4270 mvpp2_txdesc_size_set(port, tx_desc, hdr_sz); 4271 4272 addr = txq_pcpu->tso_headers_dma + 4273 txq_pcpu->txq_put_index * TSO_HEADER_SIZE; 4274 mvpp2_txdesc_dma_addr_set(port, tx_desc, addr); 4275 4276 mvpp2_txdesc_cmd_set(port, tx_desc, mvpp2_skb_tx_csum(port, skb) | 4277 MVPP2_TXD_F_DESC | 4278 MVPP2_TXD_PADDING_DISABLE); 4279 mvpp2_txq_inc_put(port, txq_pcpu, NULL, tx_desc, MVPP2_TYPE_SKB); 4280 } 4281 4282 static inline int mvpp2_tso_put_data(struct sk_buff *skb, 4283 struct net_device *dev, struct tso_t *tso, 4284 struct mvpp2_tx_queue *txq, 4285 struct mvpp2_tx_queue *aggr_txq, 4286 struct mvpp2_txq_pcpu *txq_pcpu, 4287 int sz, bool left, bool last) 4288 { 4289 struct mvpp2_port *port = netdev_priv(dev); 4290 struct mvpp2_tx_desc *tx_desc = mvpp2_txq_next_desc_get(aggr_txq); 4291 dma_addr_t buf_dma_addr; 4292 4293 mvpp2_txdesc_clear_ptp(port, tx_desc); 4294 mvpp2_txdesc_txq_set(port, tx_desc, txq->id); 4295 mvpp2_txdesc_size_set(port, tx_desc, sz); 4296 4297 buf_dma_addr = dma_map_single(dev->dev.parent, tso->data, sz, 4298 DMA_TO_DEVICE); 4299 if (unlikely(dma_mapping_error(dev->dev.parent, buf_dma_addr))) { 4300 mvpp2_txq_desc_put(txq); 4301 return -ENOMEM; 4302 } 4303 4304 mvpp2_txdesc_dma_addr_set(port, tx_desc, buf_dma_addr); 4305 4306 if (!left) { 4307 mvpp2_txdesc_cmd_set(port, tx_desc, MVPP2_TXD_L_DESC); 4308 if (last) { 4309 mvpp2_txq_inc_put(port, txq_pcpu, skb, tx_desc, MVPP2_TYPE_SKB); 4310 return 0; 4311 } 4312 } else { 4313 mvpp2_txdesc_cmd_set(port, tx_desc, 0); 4314 } 4315 4316 mvpp2_txq_inc_put(port, txq_pcpu, NULL, tx_desc, MVPP2_TYPE_SKB); 4317 return 0; 4318 } 4319 4320 static int mvpp2_tx_tso(struct sk_buff *skb, struct net_device *dev, 4321 struct mvpp2_tx_queue *txq, 4322 struct mvpp2_tx_queue *aggr_txq, 4323 struct mvpp2_txq_pcpu *txq_pcpu) 4324 { 4325 struct mvpp2_port *port = netdev_priv(dev); 4326 int hdr_sz, i, len, descs = 0; 4327 struct tso_t tso; 4328 4329 /* Check number of available descriptors */ 4330 if (mvpp2_aggr_desc_num_check(port, aggr_txq, tso_count_descs(skb)) || 4331 mvpp2_txq_reserved_desc_num_proc(port, txq, txq_pcpu, 4332 tso_count_descs(skb))) 4333 return 0; 4334 4335 hdr_sz = tso_start(skb, &tso); 4336 4337 len = skb->len - hdr_sz; 4338 while (len > 0) { 4339 int left = min_t(int, skb_shinfo(skb)->gso_size, len); 4340 char *hdr = txq_pcpu->tso_headers + 4341 txq_pcpu->txq_put_index * TSO_HEADER_SIZE; 4342 4343 len -= left; 4344 descs++; 4345 4346 tso_build_hdr(skb, hdr, &tso, left, len == 0); 4347 mvpp2_tso_put_hdr(skb, dev, txq, aggr_txq, txq_pcpu, hdr_sz); 4348 4349 while (left > 0) { 4350 int sz = min_t(int, tso.size, left); 4351 left -= sz; 4352 descs++; 4353 4354 if (mvpp2_tso_put_data(skb, dev, &tso, txq, aggr_txq, 4355 txq_pcpu, sz, left, len == 0)) 4356 goto release; 4357 tso_build_data(skb, &tso, sz); 4358 } 4359 } 4360 4361 return descs; 4362 4363 release: 4364 for (i = descs - 1; i >= 0; i--) { 4365 struct mvpp2_tx_desc *tx_desc = txq->descs + i; 4366 tx_desc_unmap_put(port, txq, tx_desc); 4367 } 4368 return 0; 4369 } 4370 4371 /* Main tx processing */ 4372 static netdev_tx_t mvpp2_tx(struct sk_buff *skb, struct net_device *dev) 4373 { 4374 struct mvpp2_port *port = netdev_priv(dev); 4375 struct mvpp2_tx_queue *txq, *aggr_txq; 4376 struct mvpp2_txq_pcpu *txq_pcpu; 4377 struct mvpp2_tx_desc *tx_desc; 4378 dma_addr_t buf_dma_addr; 4379 unsigned long flags = 0; 4380 unsigned int thread; 4381 int frags = 0; 4382 u16 txq_id; 4383 u32 tx_cmd; 4384 4385 thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 4386 4387 txq_id = skb_get_queue_mapping(skb); 4388 txq = port->txqs[txq_id]; 4389 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 4390 aggr_txq = &port->priv->aggr_txqs[thread]; 4391 4392 if (test_bit(thread, &port->priv->lock_map)) 4393 spin_lock_irqsave(&port->tx_lock[thread], flags); 4394 4395 if (skb_is_gso(skb)) { 4396 frags = mvpp2_tx_tso(skb, dev, txq, aggr_txq, txq_pcpu); 4397 goto out; 4398 } 4399 frags = skb_shinfo(skb)->nr_frags + 1; 4400 4401 /* Check number of available descriptors */ 4402 if (mvpp2_aggr_desc_num_check(port, aggr_txq, frags) || 4403 mvpp2_txq_reserved_desc_num_proc(port, txq, txq_pcpu, frags)) { 4404 frags = 0; 4405 goto out; 4406 } 4407 4408 /* Get a descriptor for the first part of the packet */ 4409 tx_desc = mvpp2_txq_next_desc_get(aggr_txq); 4410 if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) || 4411 !mvpp2_tx_hw_tstamp(port, tx_desc, skb)) 4412 mvpp2_txdesc_clear_ptp(port, tx_desc); 4413 mvpp2_txdesc_txq_set(port, tx_desc, txq->id); 4414 mvpp2_txdesc_size_set(port, tx_desc, skb_headlen(skb)); 4415 4416 buf_dma_addr = dma_map_single(dev->dev.parent, skb->data, 4417 skb_headlen(skb), DMA_TO_DEVICE); 4418 if (unlikely(dma_mapping_error(dev->dev.parent, buf_dma_addr))) { 4419 mvpp2_txq_desc_put(txq); 4420 frags = 0; 4421 goto out; 4422 } 4423 4424 mvpp2_txdesc_dma_addr_set(port, tx_desc, buf_dma_addr); 4425 4426 tx_cmd = mvpp2_skb_tx_csum(port, skb); 4427 4428 if (frags == 1) { 4429 /* First and Last descriptor */ 4430 tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_L_DESC; 4431 mvpp2_txdesc_cmd_set(port, tx_desc, tx_cmd); 4432 mvpp2_txq_inc_put(port, txq_pcpu, skb, tx_desc, MVPP2_TYPE_SKB); 4433 } else { 4434 /* First but not Last */ 4435 tx_cmd |= MVPP2_TXD_F_DESC | MVPP2_TXD_PADDING_DISABLE; 4436 mvpp2_txdesc_cmd_set(port, tx_desc, tx_cmd); 4437 mvpp2_txq_inc_put(port, txq_pcpu, NULL, tx_desc, MVPP2_TYPE_SKB); 4438 4439 /* Continue with other skb fragments */ 4440 if (mvpp2_tx_frag_process(port, skb, aggr_txq, txq)) { 4441 tx_desc_unmap_put(port, txq, tx_desc); 4442 frags = 0; 4443 } 4444 } 4445 4446 out: 4447 if (frags > 0) { 4448 struct mvpp2_pcpu_stats *stats = per_cpu_ptr(port->stats, thread); 4449 struct netdev_queue *nq = netdev_get_tx_queue(dev, txq_id); 4450 4451 txq_pcpu->reserved_num -= frags; 4452 txq_pcpu->count += frags; 4453 aggr_txq->count += frags; 4454 4455 skb_tx_timestamp(skb); 4456 4457 /* Enable transmit */ 4458 wmb(); 4459 mvpp2_aggr_txq_pend_desc_add(port, frags); 4460 4461 if (txq_pcpu->count >= txq_pcpu->stop_threshold) 4462 netif_tx_stop_queue(nq); 4463 4464 u64_stats_update_begin(&stats->syncp); 4465 stats->tx_packets++; 4466 stats->tx_bytes += skb->len; 4467 u64_stats_update_end(&stats->syncp); 4468 } else { 4469 dev->stats.tx_dropped++; 4470 dev_kfree_skb_any(skb); 4471 } 4472 4473 /* Finalize TX processing */ 4474 if (!port->has_tx_irqs && txq_pcpu->count >= txq->done_pkts_coal) 4475 mvpp2_txq_done(port, txq, txq_pcpu); 4476 4477 /* Set the timer in case not all frags were processed */ 4478 if (!port->has_tx_irqs && txq_pcpu->count <= frags && 4479 txq_pcpu->count > 0) { 4480 struct mvpp2_port_pcpu *port_pcpu = per_cpu_ptr(port->pcpu, thread); 4481 4482 if (!port_pcpu->timer_scheduled) { 4483 port_pcpu->timer_scheduled = true; 4484 hrtimer_start(&port_pcpu->tx_done_timer, 4485 MVPP2_TXDONE_HRTIMER_PERIOD_NS, 4486 HRTIMER_MODE_REL_PINNED_SOFT); 4487 } 4488 } 4489 4490 if (test_bit(thread, &port->priv->lock_map)) 4491 spin_unlock_irqrestore(&port->tx_lock[thread], flags); 4492 4493 return NETDEV_TX_OK; 4494 } 4495 4496 static inline void mvpp2_cause_error(struct net_device *dev, int cause) 4497 { 4498 if (cause & MVPP2_CAUSE_FCS_ERR_MASK) 4499 netdev_err(dev, "FCS error\n"); 4500 if (cause & MVPP2_CAUSE_RX_FIFO_OVERRUN_MASK) 4501 netdev_err(dev, "rx fifo overrun error\n"); 4502 if (cause & MVPP2_CAUSE_TX_FIFO_UNDERRUN_MASK) 4503 netdev_err(dev, "tx fifo underrun error\n"); 4504 } 4505 4506 static int mvpp2_poll(struct napi_struct *napi, int budget) 4507 { 4508 u32 cause_rx_tx, cause_rx, cause_tx, cause_misc; 4509 int rx_done = 0; 4510 struct mvpp2_port *port = netdev_priv(napi->dev); 4511 struct mvpp2_queue_vector *qv; 4512 unsigned int thread = mvpp2_cpu_to_thread(port->priv, smp_processor_id()); 4513 4514 qv = container_of(napi, struct mvpp2_queue_vector, napi); 4515 4516 /* Rx/Tx cause register 4517 * 4518 * Bits 0-15: each bit indicates received packets on the Rx queue 4519 * (bit 0 is for Rx queue 0). 4520 * 4521 * Bits 16-23: each bit indicates transmitted packets on the Tx queue 4522 * (bit 16 is for Tx queue 0). 4523 * 4524 * Each CPU has its own Rx/Tx cause register 4525 */ 4526 cause_rx_tx = mvpp2_thread_read_relaxed(port->priv, qv->sw_thread_id, 4527 MVPP2_ISR_RX_TX_CAUSE_REG(port->id)); 4528 4529 cause_misc = cause_rx_tx & MVPP2_CAUSE_MISC_SUM_MASK; 4530 if (cause_misc) { 4531 mvpp2_cause_error(port->dev, cause_misc); 4532 4533 /* Clear the cause register */ 4534 mvpp2_write(port->priv, MVPP2_ISR_MISC_CAUSE_REG, 0); 4535 mvpp2_thread_write(port->priv, thread, 4536 MVPP2_ISR_RX_TX_CAUSE_REG(port->id), 4537 cause_rx_tx & ~MVPP2_CAUSE_MISC_SUM_MASK); 4538 } 4539 4540 if (port->has_tx_irqs) { 4541 cause_tx = cause_rx_tx & MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_MASK; 4542 if (cause_tx) { 4543 cause_tx >>= MVPP2_CAUSE_TXQ_OCCUP_DESC_ALL_OFFSET; 4544 mvpp2_tx_done(port, cause_tx, qv->sw_thread_id); 4545 } 4546 } 4547 4548 /* Process RX packets */ 4549 cause_rx = cause_rx_tx & 4550 MVPP2_CAUSE_RXQ_OCCUP_DESC_ALL_MASK(port->priv->hw_version); 4551 cause_rx <<= qv->first_rxq; 4552 cause_rx |= qv->pending_cause_rx; 4553 while (cause_rx && budget > 0) { 4554 int count; 4555 struct mvpp2_rx_queue *rxq; 4556 4557 rxq = mvpp2_get_rx_queue(port, cause_rx); 4558 if (!rxq) 4559 break; 4560 4561 count = mvpp2_rx(port, napi, budget, rxq); 4562 rx_done += count; 4563 budget -= count; 4564 if (budget > 0) { 4565 /* Clear the bit associated to this Rx queue 4566 * so that next iteration will continue from 4567 * the next Rx queue. 4568 */ 4569 cause_rx &= ~(1 << rxq->logic_rxq); 4570 } 4571 } 4572 4573 if (budget > 0) { 4574 cause_rx = 0; 4575 napi_complete_done(napi, rx_done); 4576 4577 mvpp2_qvec_interrupt_enable(qv); 4578 } 4579 qv->pending_cause_rx = cause_rx; 4580 return rx_done; 4581 } 4582 4583 static void mvpp22_mode_reconfigure(struct mvpp2_port *port, 4584 phy_interface_t interface) 4585 { 4586 u32 ctrl3; 4587 4588 /* Set the GMAC & XLG MAC in reset */ 4589 mvpp2_mac_reset_assert(port); 4590 4591 /* Set the MPCS and XPCS in reset */ 4592 mvpp22_pcs_reset_assert(port); 4593 4594 /* comphy reconfiguration */ 4595 mvpp22_comphy_init(port, interface); 4596 4597 /* gop reconfiguration */ 4598 mvpp22_gop_init(port, interface); 4599 4600 mvpp22_pcs_reset_deassert(port, interface); 4601 4602 if (mvpp2_port_supports_xlg(port)) { 4603 ctrl3 = readl(port->base + MVPP22_XLG_CTRL3_REG); 4604 ctrl3 &= ~MVPP22_XLG_CTRL3_MACMODESELECT_MASK; 4605 4606 if (mvpp2_is_xlg(interface)) 4607 ctrl3 |= MVPP22_XLG_CTRL3_MACMODESELECT_10G; 4608 else 4609 ctrl3 |= MVPP22_XLG_CTRL3_MACMODESELECT_GMAC; 4610 4611 writel(ctrl3, port->base + MVPP22_XLG_CTRL3_REG); 4612 } 4613 4614 if (mvpp2_port_supports_xlg(port) && mvpp2_is_xlg(interface)) 4615 mvpp2_xlg_max_rx_size_set(port); 4616 else 4617 mvpp2_gmac_max_rx_size_set(port); 4618 } 4619 4620 /* Set hw internals when starting port */ 4621 static void mvpp2_start_dev(struct mvpp2_port *port) 4622 { 4623 int i; 4624 4625 mvpp2_txp_max_tx_size_set(port); 4626 4627 for (i = 0; i < port->nqvecs; i++) 4628 napi_enable(&port->qvecs[i].napi); 4629 4630 /* Enable interrupts on all threads */ 4631 mvpp2_interrupts_enable(port); 4632 4633 if (port->priv->hw_version >= MVPP22) 4634 mvpp22_mode_reconfigure(port, port->phy_interface); 4635 4636 if (port->phylink) { 4637 phylink_start(port->phylink); 4638 } else { 4639 mvpp2_acpi_start(port); 4640 } 4641 4642 netif_tx_start_all_queues(port->dev); 4643 4644 clear_bit(0, &port->state); 4645 } 4646 4647 /* Set hw internals when stopping port */ 4648 static void mvpp2_stop_dev(struct mvpp2_port *port) 4649 { 4650 int i; 4651 4652 set_bit(0, &port->state); 4653 4654 /* Disable interrupts on all threads */ 4655 mvpp2_interrupts_disable(port); 4656 4657 for (i = 0; i < port->nqvecs; i++) 4658 napi_disable(&port->qvecs[i].napi); 4659 4660 if (port->phylink) 4661 phylink_stop(port->phylink); 4662 phy_power_off(port->comphy); 4663 } 4664 4665 static int mvpp2_check_ringparam_valid(struct net_device *dev, 4666 struct ethtool_ringparam *ring) 4667 { 4668 u16 new_rx_pending = ring->rx_pending; 4669 u16 new_tx_pending = ring->tx_pending; 4670 4671 if (ring->rx_pending == 0 || ring->tx_pending == 0) 4672 return -EINVAL; 4673 4674 if (ring->rx_pending > MVPP2_MAX_RXD_MAX) 4675 new_rx_pending = MVPP2_MAX_RXD_MAX; 4676 else if (ring->rx_pending < MSS_THRESHOLD_START) 4677 new_rx_pending = MSS_THRESHOLD_START; 4678 else if (!IS_ALIGNED(ring->rx_pending, 16)) 4679 new_rx_pending = ALIGN(ring->rx_pending, 16); 4680 4681 if (ring->tx_pending > MVPP2_MAX_TXD_MAX) 4682 new_tx_pending = MVPP2_MAX_TXD_MAX; 4683 else if (!IS_ALIGNED(ring->tx_pending, 32)) 4684 new_tx_pending = ALIGN(ring->tx_pending, 32); 4685 4686 /* The Tx ring size cannot be smaller than the minimum number of 4687 * descriptors needed for TSO. 4688 */ 4689 if (new_tx_pending < MVPP2_MAX_SKB_DESCS) 4690 new_tx_pending = ALIGN(MVPP2_MAX_SKB_DESCS, 32); 4691 4692 if (ring->rx_pending != new_rx_pending) { 4693 netdev_info(dev, "illegal Rx ring size value %d, round to %d\n", 4694 ring->rx_pending, new_rx_pending); 4695 ring->rx_pending = new_rx_pending; 4696 } 4697 4698 if (ring->tx_pending != new_tx_pending) { 4699 netdev_info(dev, "illegal Tx ring size value %d, round to %d\n", 4700 ring->tx_pending, new_tx_pending); 4701 ring->tx_pending = new_tx_pending; 4702 } 4703 4704 return 0; 4705 } 4706 4707 static void mvpp21_get_mac_address(struct mvpp2_port *port, unsigned char *addr) 4708 { 4709 u32 mac_addr_l, mac_addr_m, mac_addr_h; 4710 4711 mac_addr_l = readl(port->base + MVPP2_GMAC_CTRL_1_REG); 4712 mac_addr_m = readl(port->priv->lms_base + MVPP2_SRC_ADDR_MIDDLE); 4713 mac_addr_h = readl(port->priv->lms_base + MVPP2_SRC_ADDR_HIGH); 4714 addr[0] = (mac_addr_h >> 24) & 0xFF; 4715 addr[1] = (mac_addr_h >> 16) & 0xFF; 4716 addr[2] = (mac_addr_h >> 8) & 0xFF; 4717 addr[3] = mac_addr_h & 0xFF; 4718 addr[4] = mac_addr_m & 0xFF; 4719 addr[5] = (mac_addr_l >> MVPP2_GMAC_SA_LOW_OFFS) & 0xFF; 4720 } 4721 4722 static int mvpp2_irqs_init(struct mvpp2_port *port) 4723 { 4724 int err, i; 4725 4726 for (i = 0; i < port->nqvecs; i++) { 4727 struct mvpp2_queue_vector *qv = port->qvecs + i; 4728 4729 if (qv->type == MVPP2_QUEUE_VECTOR_PRIVATE) { 4730 qv->mask = kzalloc(cpumask_size(), GFP_KERNEL); 4731 if (!qv->mask) { 4732 err = -ENOMEM; 4733 goto err; 4734 } 4735 4736 irq_set_status_flags(qv->irq, IRQ_NO_BALANCING); 4737 } 4738 4739 err = request_irq(qv->irq, mvpp2_isr, 0, port->dev->name, qv); 4740 if (err) 4741 goto err; 4742 4743 if (qv->type == MVPP2_QUEUE_VECTOR_PRIVATE) { 4744 unsigned int cpu; 4745 4746 for_each_present_cpu(cpu) { 4747 if (mvpp2_cpu_to_thread(port->priv, cpu) == 4748 qv->sw_thread_id) 4749 cpumask_set_cpu(cpu, qv->mask); 4750 } 4751 4752 irq_set_affinity_hint(qv->irq, qv->mask); 4753 } 4754 } 4755 4756 return 0; 4757 err: 4758 for (i = 0; i < port->nqvecs; i++) { 4759 struct mvpp2_queue_vector *qv = port->qvecs + i; 4760 4761 irq_set_affinity_hint(qv->irq, NULL); 4762 kfree(qv->mask); 4763 qv->mask = NULL; 4764 free_irq(qv->irq, qv); 4765 } 4766 4767 return err; 4768 } 4769 4770 static void mvpp2_irqs_deinit(struct mvpp2_port *port) 4771 { 4772 int i; 4773 4774 for (i = 0; i < port->nqvecs; i++) { 4775 struct mvpp2_queue_vector *qv = port->qvecs + i; 4776 4777 irq_set_affinity_hint(qv->irq, NULL); 4778 kfree(qv->mask); 4779 qv->mask = NULL; 4780 irq_clear_status_flags(qv->irq, IRQ_NO_BALANCING); 4781 free_irq(qv->irq, qv); 4782 } 4783 } 4784 4785 static bool mvpp22_rss_is_supported(struct mvpp2_port *port) 4786 { 4787 return (queue_mode == MVPP2_QDIST_MULTI_MODE) && 4788 !(port->flags & MVPP2_F_LOOPBACK); 4789 } 4790 4791 static int mvpp2_open(struct net_device *dev) 4792 { 4793 struct mvpp2_port *port = netdev_priv(dev); 4794 struct mvpp2 *priv = port->priv; 4795 unsigned char mac_bcast[ETH_ALEN] = { 4796 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 4797 bool valid = false; 4798 int err; 4799 4800 err = mvpp2_prs_mac_da_accept(port, mac_bcast, true); 4801 if (err) { 4802 netdev_err(dev, "mvpp2_prs_mac_da_accept BC failed\n"); 4803 return err; 4804 } 4805 err = mvpp2_prs_mac_da_accept(port, dev->dev_addr, true); 4806 if (err) { 4807 netdev_err(dev, "mvpp2_prs_mac_da_accept own addr failed\n"); 4808 return err; 4809 } 4810 err = mvpp2_prs_tag_mode_set(port->priv, port->id, MVPP2_TAG_TYPE_MH); 4811 if (err) { 4812 netdev_err(dev, "mvpp2_prs_tag_mode_set failed\n"); 4813 return err; 4814 } 4815 err = mvpp2_prs_def_flow(port); 4816 if (err) { 4817 netdev_err(dev, "mvpp2_prs_def_flow failed\n"); 4818 return err; 4819 } 4820 4821 /* Allocate the Rx/Tx queues */ 4822 err = mvpp2_setup_rxqs(port); 4823 if (err) { 4824 netdev_err(port->dev, "cannot allocate Rx queues\n"); 4825 return err; 4826 } 4827 4828 err = mvpp2_setup_txqs(port); 4829 if (err) { 4830 netdev_err(port->dev, "cannot allocate Tx queues\n"); 4831 goto err_cleanup_rxqs; 4832 } 4833 4834 err = mvpp2_irqs_init(port); 4835 if (err) { 4836 netdev_err(port->dev, "cannot init IRQs\n"); 4837 goto err_cleanup_txqs; 4838 } 4839 4840 if (port->phylink) { 4841 err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0); 4842 if (err) { 4843 netdev_err(port->dev, "could not attach PHY (%d)\n", 4844 err); 4845 goto err_free_irq; 4846 } 4847 4848 valid = true; 4849 } 4850 4851 if (priv->hw_version >= MVPP22 && port->port_irq) { 4852 err = request_irq(port->port_irq, mvpp2_port_isr, 0, 4853 dev->name, port); 4854 if (err) { 4855 netdev_err(port->dev, 4856 "cannot request port link/ptp IRQ %d\n", 4857 port->port_irq); 4858 goto err_free_irq; 4859 } 4860 4861 mvpp22_gop_setup_irq(port); 4862 4863 /* In default link is down */ 4864 netif_carrier_off(port->dev); 4865 4866 valid = true; 4867 } else { 4868 port->port_irq = 0; 4869 } 4870 4871 if (!valid) { 4872 netdev_err(port->dev, 4873 "invalid configuration: no dt or link IRQ"); 4874 err = -ENOENT; 4875 goto err_free_irq; 4876 } 4877 4878 /* Unmask interrupts on all CPUs */ 4879 on_each_cpu(mvpp2_interrupts_unmask, port, 1); 4880 mvpp2_shared_interrupt_mask_unmask(port, false); 4881 4882 mvpp2_start_dev(port); 4883 4884 /* Start hardware statistics gathering */ 4885 queue_delayed_work(priv->stats_queue, &port->stats_work, 4886 MVPP2_MIB_COUNTERS_STATS_DELAY); 4887 4888 return 0; 4889 4890 err_free_irq: 4891 mvpp2_irqs_deinit(port); 4892 err_cleanup_txqs: 4893 mvpp2_cleanup_txqs(port); 4894 err_cleanup_rxqs: 4895 mvpp2_cleanup_rxqs(port); 4896 return err; 4897 } 4898 4899 static int mvpp2_stop(struct net_device *dev) 4900 { 4901 struct mvpp2_port *port = netdev_priv(dev); 4902 struct mvpp2_port_pcpu *port_pcpu; 4903 unsigned int thread; 4904 4905 mvpp2_stop_dev(port); 4906 4907 /* Mask interrupts on all threads */ 4908 on_each_cpu(mvpp2_interrupts_mask, port, 1); 4909 mvpp2_shared_interrupt_mask_unmask(port, true); 4910 4911 if (port->phylink) 4912 phylink_disconnect_phy(port->phylink); 4913 if (port->port_irq) 4914 free_irq(port->port_irq, port); 4915 4916 mvpp2_irqs_deinit(port); 4917 if (!port->has_tx_irqs) { 4918 for (thread = 0; thread < port->priv->nthreads; thread++) { 4919 port_pcpu = per_cpu_ptr(port->pcpu, thread); 4920 4921 hrtimer_cancel(&port_pcpu->tx_done_timer); 4922 port_pcpu->timer_scheduled = false; 4923 } 4924 } 4925 mvpp2_cleanup_rxqs(port); 4926 mvpp2_cleanup_txqs(port); 4927 4928 cancel_delayed_work_sync(&port->stats_work); 4929 4930 mvpp2_mac_reset_assert(port); 4931 mvpp22_pcs_reset_assert(port); 4932 4933 return 0; 4934 } 4935 4936 static int mvpp2_prs_mac_da_accept_list(struct mvpp2_port *port, 4937 struct netdev_hw_addr_list *list) 4938 { 4939 struct netdev_hw_addr *ha; 4940 int ret; 4941 4942 netdev_hw_addr_list_for_each(ha, list) { 4943 ret = mvpp2_prs_mac_da_accept(port, ha->addr, true); 4944 if (ret) 4945 return ret; 4946 } 4947 4948 return 0; 4949 } 4950 4951 static void mvpp2_set_rx_promisc(struct mvpp2_port *port, bool enable) 4952 { 4953 if (!enable && (port->dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) 4954 mvpp2_prs_vid_enable_filtering(port); 4955 else 4956 mvpp2_prs_vid_disable_filtering(port); 4957 4958 mvpp2_prs_mac_promisc_set(port->priv, port->id, 4959 MVPP2_PRS_L2_UNI_CAST, enable); 4960 4961 mvpp2_prs_mac_promisc_set(port->priv, port->id, 4962 MVPP2_PRS_L2_MULTI_CAST, enable); 4963 } 4964 4965 static void mvpp2_set_rx_mode(struct net_device *dev) 4966 { 4967 struct mvpp2_port *port = netdev_priv(dev); 4968 4969 /* Clear the whole UC and MC list */ 4970 mvpp2_prs_mac_del_all(port); 4971 4972 if (dev->flags & IFF_PROMISC) { 4973 mvpp2_set_rx_promisc(port, true); 4974 return; 4975 } 4976 4977 mvpp2_set_rx_promisc(port, false); 4978 4979 if (netdev_uc_count(dev) > MVPP2_PRS_MAC_UC_FILT_MAX || 4980 mvpp2_prs_mac_da_accept_list(port, &dev->uc)) 4981 mvpp2_prs_mac_promisc_set(port->priv, port->id, 4982 MVPP2_PRS_L2_UNI_CAST, true); 4983 4984 if (dev->flags & IFF_ALLMULTI) { 4985 mvpp2_prs_mac_promisc_set(port->priv, port->id, 4986 MVPP2_PRS_L2_MULTI_CAST, true); 4987 return; 4988 } 4989 4990 if (netdev_mc_count(dev) > MVPP2_PRS_MAC_MC_FILT_MAX || 4991 mvpp2_prs_mac_da_accept_list(port, &dev->mc)) 4992 mvpp2_prs_mac_promisc_set(port->priv, port->id, 4993 MVPP2_PRS_L2_MULTI_CAST, true); 4994 } 4995 4996 static int mvpp2_set_mac_address(struct net_device *dev, void *p) 4997 { 4998 const struct sockaddr *addr = p; 4999 int err; 5000 5001 if (!is_valid_ether_addr(addr->sa_data)) 5002 return -EADDRNOTAVAIL; 5003 5004 err = mvpp2_prs_update_mac_da(dev, addr->sa_data); 5005 if (err) { 5006 /* Reconfigure parser accept the original MAC address */ 5007 mvpp2_prs_update_mac_da(dev, dev->dev_addr); 5008 netdev_err(dev, "failed to change MAC address\n"); 5009 } 5010 return err; 5011 } 5012 5013 /* Shut down all the ports, reconfigure the pools as percpu or shared, 5014 * then bring up again all ports. 5015 */ 5016 static int mvpp2_bm_switch_buffers(struct mvpp2 *priv, bool percpu) 5017 { 5018 bool change_percpu = (percpu != priv->percpu_pools); 5019 int numbufs = MVPP2_BM_POOLS_NUM, i; 5020 struct mvpp2_port *port = NULL; 5021 bool status[MVPP2_MAX_PORTS]; 5022 5023 for (i = 0; i < priv->port_count; i++) { 5024 port = priv->port_list[i]; 5025 status[i] = netif_running(port->dev); 5026 if (status[i]) 5027 mvpp2_stop(port->dev); 5028 } 5029 5030 /* nrxqs is the same for all ports */ 5031 if (priv->percpu_pools) 5032 numbufs = port->nrxqs * 2; 5033 5034 if (change_percpu && priv->global_tx_fc) 5035 mvpp2_bm_pool_update_priv_fc(priv, false); 5036 5037 for (i = 0; i < numbufs; i++) 5038 mvpp2_bm_pool_destroy(port->dev->dev.parent, priv, &priv->bm_pools[i]); 5039 5040 devm_kfree(port->dev->dev.parent, priv->bm_pools); 5041 priv->percpu_pools = percpu; 5042 mvpp2_bm_init(port->dev->dev.parent, priv); 5043 5044 for (i = 0; i < priv->port_count; i++) { 5045 port = priv->port_list[i]; 5046 if (percpu && port->ntxqs >= num_possible_cpus() * 2) 5047 xdp_set_features_flag(port->dev, 5048 NETDEV_XDP_ACT_BASIC | 5049 NETDEV_XDP_ACT_REDIRECT | 5050 NETDEV_XDP_ACT_NDO_XMIT); 5051 else 5052 xdp_clear_features_flag(port->dev); 5053 5054 mvpp2_swf_bm_pool_init(port); 5055 if (status[i]) 5056 mvpp2_open(port->dev); 5057 } 5058 5059 if (change_percpu && priv->global_tx_fc) 5060 mvpp2_bm_pool_update_priv_fc(priv, true); 5061 5062 return 0; 5063 } 5064 5065 static int mvpp2_change_mtu(struct net_device *dev, int mtu) 5066 { 5067 struct mvpp2_port *port = netdev_priv(dev); 5068 bool running = netif_running(dev); 5069 struct mvpp2 *priv = port->priv; 5070 int err; 5071 5072 if (!IS_ALIGNED(MVPP2_RX_PKT_SIZE(mtu), 8)) { 5073 netdev_info(dev, "illegal MTU value %d, round to %d\n", mtu, 5074 ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8)); 5075 mtu = ALIGN(MVPP2_RX_PKT_SIZE(mtu), 8); 5076 } 5077 5078 if (port->xdp_prog && mtu > MVPP2_MAX_RX_BUF_SIZE) { 5079 netdev_err(dev, "Illegal MTU value %d (> %d) for XDP mode\n", 5080 mtu, (int)MVPP2_MAX_RX_BUF_SIZE); 5081 return -EINVAL; 5082 } 5083 5084 if (MVPP2_RX_PKT_SIZE(mtu) > MVPP2_BM_LONG_PKT_SIZE) { 5085 if (priv->percpu_pools) { 5086 netdev_warn(dev, "mtu %d too high, switching to shared buffers", mtu); 5087 mvpp2_bm_switch_buffers(priv, false); 5088 } 5089 } else { 5090 bool jumbo = false; 5091 int i; 5092 5093 for (i = 0; i < priv->port_count; i++) 5094 if (priv->port_list[i] != port && 5095 MVPP2_RX_PKT_SIZE(priv->port_list[i]->dev->mtu) > 5096 MVPP2_BM_LONG_PKT_SIZE) { 5097 jumbo = true; 5098 break; 5099 } 5100 5101 /* No port is using jumbo frames */ 5102 if (!jumbo) { 5103 dev_info(port->dev->dev.parent, 5104 "all ports have a low MTU, switching to per-cpu buffers"); 5105 mvpp2_bm_switch_buffers(priv, true); 5106 } 5107 } 5108 5109 if (running) 5110 mvpp2_stop_dev(port); 5111 5112 err = mvpp2_bm_update_mtu(dev, mtu); 5113 if (err) { 5114 netdev_err(dev, "failed to change MTU\n"); 5115 /* Reconfigure BM to the original MTU */ 5116 mvpp2_bm_update_mtu(dev, dev->mtu); 5117 } else { 5118 port->pkt_size = MVPP2_RX_PKT_SIZE(mtu); 5119 } 5120 5121 if (running) { 5122 mvpp2_start_dev(port); 5123 mvpp2_egress_enable(port); 5124 mvpp2_ingress_enable(port); 5125 } 5126 5127 return err; 5128 } 5129 5130 static int mvpp2_check_pagepool_dma(struct mvpp2_port *port) 5131 { 5132 enum dma_data_direction dma_dir = DMA_FROM_DEVICE; 5133 struct mvpp2 *priv = port->priv; 5134 int err = -1, i; 5135 5136 if (!priv->percpu_pools) 5137 return err; 5138 5139 if (!priv->page_pool[0]) 5140 return -ENOMEM; 5141 5142 for (i = 0; i < priv->port_count; i++) { 5143 port = priv->port_list[i]; 5144 if (port->xdp_prog) { 5145 dma_dir = DMA_BIDIRECTIONAL; 5146 break; 5147 } 5148 } 5149 5150 /* All pools are equal in terms of DMA direction */ 5151 if (priv->page_pool[0]->p.dma_dir != dma_dir) 5152 err = mvpp2_bm_switch_buffers(priv, true); 5153 5154 return err; 5155 } 5156 5157 static void 5158 mvpp2_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 5159 { 5160 struct mvpp2_port *port = netdev_priv(dev); 5161 unsigned int start; 5162 unsigned int cpu; 5163 5164 for_each_possible_cpu(cpu) { 5165 struct mvpp2_pcpu_stats *cpu_stats; 5166 u64 rx_packets; 5167 u64 rx_bytes; 5168 u64 tx_packets; 5169 u64 tx_bytes; 5170 5171 cpu_stats = per_cpu_ptr(port->stats, cpu); 5172 do { 5173 start = u64_stats_fetch_begin(&cpu_stats->syncp); 5174 rx_packets = cpu_stats->rx_packets; 5175 rx_bytes = cpu_stats->rx_bytes; 5176 tx_packets = cpu_stats->tx_packets; 5177 tx_bytes = cpu_stats->tx_bytes; 5178 } while (u64_stats_fetch_retry(&cpu_stats->syncp, start)); 5179 5180 stats->rx_packets += rx_packets; 5181 stats->rx_bytes += rx_bytes; 5182 stats->tx_packets += tx_packets; 5183 stats->tx_bytes += tx_bytes; 5184 } 5185 5186 stats->rx_errors = dev->stats.rx_errors; 5187 stats->rx_dropped = dev->stats.rx_dropped; 5188 stats->tx_dropped = dev->stats.tx_dropped; 5189 } 5190 5191 static int mvpp2_hwtstamp_set(struct net_device *dev, 5192 struct kernel_hwtstamp_config *config, 5193 struct netlink_ext_ack *extack) 5194 { 5195 struct mvpp2_port *port = netdev_priv(dev); 5196 void __iomem *ptp; 5197 u32 gcr, int_mask; 5198 5199 if (!port->hwtstamp) 5200 return -EOPNOTSUPP; 5201 5202 if (config->tx_type != HWTSTAMP_TX_OFF && 5203 config->tx_type != HWTSTAMP_TX_ON) 5204 return -ERANGE; 5205 5206 ptp = port->priv->iface_base + MVPP22_PTP_BASE(port->gop_id); 5207 5208 int_mask = gcr = 0; 5209 if (config->tx_type != HWTSTAMP_TX_OFF) { 5210 gcr |= MVPP22_PTP_GCR_TSU_ENABLE | MVPP22_PTP_GCR_TX_RESET; 5211 int_mask |= MVPP22_PTP_INT_MASK_QUEUE1 | 5212 MVPP22_PTP_INT_MASK_QUEUE0; 5213 } 5214 5215 /* It seems we must also release the TX reset when enabling the TSU */ 5216 if (config->rx_filter != HWTSTAMP_FILTER_NONE) 5217 gcr |= MVPP22_PTP_GCR_TSU_ENABLE | MVPP22_PTP_GCR_RX_RESET | 5218 MVPP22_PTP_GCR_TX_RESET; 5219 5220 if (gcr & MVPP22_PTP_GCR_TSU_ENABLE) 5221 mvpp22_tai_start(port->priv->tai); 5222 5223 if (config->rx_filter != HWTSTAMP_FILTER_NONE) { 5224 config->rx_filter = HWTSTAMP_FILTER_ALL; 5225 mvpp2_modify(ptp + MVPP22_PTP_GCR, 5226 MVPP22_PTP_GCR_RX_RESET | 5227 MVPP22_PTP_GCR_TX_RESET | 5228 MVPP22_PTP_GCR_TSU_ENABLE, gcr); 5229 port->rx_hwtstamp = true; 5230 } else { 5231 port->rx_hwtstamp = false; 5232 mvpp2_modify(ptp + MVPP22_PTP_GCR, 5233 MVPP22_PTP_GCR_RX_RESET | 5234 MVPP22_PTP_GCR_TX_RESET | 5235 MVPP22_PTP_GCR_TSU_ENABLE, gcr); 5236 } 5237 5238 mvpp2_modify(ptp + MVPP22_PTP_INT_MASK, 5239 MVPP22_PTP_INT_MASK_QUEUE1 | 5240 MVPP22_PTP_INT_MASK_QUEUE0, int_mask); 5241 5242 if (!(gcr & MVPP22_PTP_GCR_TSU_ENABLE)) 5243 mvpp22_tai_stop(port->priv->tai); 5244 5245 port->tx_hwtstamp_type = config->tx_type; 5246 5247 return 0; 5248 } 5249 5250 static int mvpp2_hwtstamp_get(struct net_device *dev, 5251 struct kernel_hwtstamp_config *config) 5252 { 5253 struct mvpp2_port *port = netdev_priv(dev); 5254 5255 if (!port->hwtstamp) 5256 return -EOPNOTSUPP; 5257 5258 config->tx_type = port->tx_hwtstamp_type; 5259 config->rx_filter = port->rx_hwtstamp ? HWTSTAMP_FILTER_ALL : 5260 HWTSTAMP_FILTER_NONE; 5261 5262 return 0; 5263 } 5264 5265 static int mvpp2_ethtool_get_ts_info(struct net_device *dev, 5266 struct kernel_ethtool_ts_info *info) 5267 { 5268 struct mvpp2_port *port = netdev_priv(dev); 5269 5270 ethtool_op_get_ts_info(dev, info); 5271 if (!port->hwtstamp) 5272 return 0; 5273 5274 info->phc_index = mvpp22_tai_ptp_clock_index(port->priv->tai); 5275 info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE | 5276 SOF_TIMESTAMPING_RX_HARDWARE | 5277 SOF_TIMESTAMPING_RAW_HARDWARE; 5278 info->tx_types = BIT(HWTSTAMP_TX_OFF) | 5279 BIT(HWTSTAMP_TX_ON); 5280 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | 5281 BIT(HWTSTAMP_FILTER_ALL); 5282 5283 return 0; 5284 } 5285 5286 static int mvpp2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 5287 { 5288 struct mvpp2_port *port = netdev_priv(dev); 5289 5290 if (!port->phylink) 5291 return -ENOTSUPP; 5292 5293 return phylink_mii_ioctl(port->phylink, ifr, cmd); 5294 } 5295 5296 static int mvpp2_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) 5297 { 5298 struct mvpp2_port *port = netdev_priv(dev); 5299 int ret; 5300 5301 ret = mvpp2_prs_vid_entry_add(port, vid); 5302 if (ret) 5303 netdev_err(dev, "rx-vlan-filter offloading cannot accept more than %d VIDs per port\n", 5304 MVPP2_PRS_VLAN_FILT_MAX - 1); 5305 return ret; 5306 } 5307 5308 static int mvpp2_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) 5309 { 5310 struct mvpp2_port *port = netdev_priv(dev); 5311 5312 mvpp2_prs_vid_entry_remove(port, vid); 5313 return 0; 5314 } 5315 5316 static int mvpp2_set_features(struct net_device *dev, 5317 netdev_features_t features) 5318 { 5319 netdev_features_t changed = dev->features ^ features; 5320 struct mvpp2_port *port = netdev_priv(dev); 5321 5322 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) { 5323 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) { 5324 mvpp2_prs_vid_enable_filtering(port); 5325 } else { 5326 /* Invalidate all registered VID filters for this 5327 * port 5328 */ 5329 mvpp2_prs_vid_remove_all(port); 5330 5331 mvpp2_prs_vid_disable_filtering(port); 5332 } 5333 } 5334 5335 if (changed & NETIF_F_RXHASH) { 5336 if (features & NETIF_F_RXHASH) 5337 mvpp22_port_rss_enable(port); 5338 else 5339 mvpp22_port_rss_disable(port); 5340 } 5341 5342 return 0; 5343 } 5344 5345 static int mvpp2_xdp_setup(struct mvpp2_port *port, struct netdev_bpf *bpf) 5346 { 5347 struct bpf_prog *prog = bpf->prog, *old_prog; 5348 bool running = netif_running(port->dev); 5349 bool reset = !prog != !port->xdp_prog; 5350 5351 if (port->dev->mtu > MVPP2_MAX_RX_BUF_SIZE) { 5352 NL_SET_ERR_MSG_MOD(bpf->extack, "MTU too large for XDP"); 5353 return -EOPNOTSUPP; 5354 } 5355 5356 if (!port->priv->percpu_pools) { 5357 NL_SET_ERR_MSG_MOD(bpf->extack, "Per CPU Pools required for XDP"); 5358 return -EOPNOTSUPP; 5359 } 5360 5361 if (port->ntxqs < num_possible_cpus() * 2) { 5362 NL_SET_ERR_MSG_MOD(bpf->extack, "XDP_TX needs two TX queues per CPU"); 5363 return -EOPNOTSUPP; 5364 } 5365 5366 /* device is up and bpf is added/removed, must setup the RX queues */ 5367 if (running && reset) 5368 mvpp2_stop(port->dev); 5369 5370 old_prog = xchg(&port->xdp_prog, prog); 5371 if (old_prog) 5372 bpf_prog_put(old_prog); 5373 5374 /* bpf is just replaced, RXQ and MTU are already setup */ 5375 if (!reset) 5376 return 0; 5377 5378 /* device was up, restore the link */ 5379 if (running) 5380 mvpp2_open(port->dev); 5381 5382 /* Check Page Pool DMA Direction */ 5383 mvpp2_check_pagepool_dma(port); 5384 5385 return 0; 5386 } 5387 5388 static int mvpp2_xdp(struct net_device *dev, struct netdev_bpf *xdp) 5389 { 5390 struct mvpp2_port *port = netdev_priv(dev); 5391 5392 switch (xdp->command) { 5393 case XDP_SETUP_PROG: 5394 return mvpp2_xdp_setup(port, xdp); 5395 default: 5396 return -EINVAL; 5397 } 5398 } 5399 5400 /* Ethtool methods */ 5401 5402 static int mvpp2_ethtool_nway_reset(struct net_device *dev) 5403 { 5404 struct mvpp2_port *port = netdev_priv(dev); 5405 5406 if (!port->phylink) 5407 return -ENOTSUPP; 5408 5409 return phylink_ethtool_nway_reset(port->phylink); 5410 } 5411 5412 /* Set interrupt coalescing for ethtools */ 5413 static int 5414 mvpp2_ethtool_set_coalesce(struct net_device *dev, 5415 struct ethtool_coalesce *c, 5416 struct kernel_ethtool_coalesce *kernel_coal, 5417 struct netlink_ext_ack *extack) 5418 { 5419 struct mvpp2_port *port = netdev_priv(dev); 5420 int queue; 5421 5422 for (queue = 0; queue < port->nrxqs; queue++) { 5423 struct mvpp2_rx_queue *rxq = port->rxqs[queue]; 5424 5425 rxq->time_coal = c->rx_coalesce_usecs; 5426 rxq->pkts_coal = c->rx_max_coalesced_frames; 5427 mvpp2_rx_pkts_coal_set(port, rxq); 5428 mvpp2_rx_time_coal_set(port, rxq); 5429 } 5430 5431 if (port->has_tx_irqs) { 5432 port->tx_time_coal = c->tx_coalesce_usecs; 5433 mvpp2_tx_time_coal_set(port); 5434 } 5435 5436 for (queue = 0; queue < port->ntxqs; queue++) { 5437 struct mvpp2_tx_queue *txq = port->txqs[queue]; 5438 5439 txq->done_pkts_coal = c->tx_max_coalesced_frames; 5440 5441 if (port->has_tx_irqs) 5442 mvpp2_tx_pkts_coal_set(port, txq); 5443 } 5444 5445 return 0; 5446 } 5447 5448 /* get coalescing for ethtools */ 5449 static int 5450 mvpp2_ethtool_get_coalesce(struct net_device *dev, 5451 struct ethtool_coalesce *c, 5452 struct kernel_ethtool_coalesce *kernel_coal, 5453 struct netlink_ext_ack *extack) 5454 { 5455 struct mvpp2_port *port = netdev_priv(dev); 5456 5457 c->rx_coalesce_usecs = port->rxqs[0]->time_coal; 5458 c->rx_max_coalesced_frames = port->rxqs[0]->pkts_coal; 5459 c->tx_max_coalesced_frames = port->txqs[0]->done_pkts_coal; 5460 c->tx_coalesce_usecs = port->tx_time_coal; 5461 return 0; 5462 } 5463 5464 static void mvpp2_ethtool_get_drvinfo(struct net_device *dev, 5465 struct ethtool_drvinfo *drvinfo) 5466 { 5467 strscpy(drvinfo->driver, MVPP2_DRIVER_NAME, 5468 sizeof(drvinfo->driver)); 5469 strscpy(drvinfo->version, MVPP2_DRIVER_VERSION, 5470 sizeof(drvinfo->version)); 5471 strscpy(drvinfo->bus_info, dev_name(&dev->dev), 5472 sizeof(drvinfo->bus_info)); 5473 } 5474 5475 static void 5476 mvpp2_ethtool_get_ringparam(struct net_device *dev, 5477 struct ethtool_ringparam *ring, 5478 struct kernel_ethtool_ringparam *kernel_ring, 5479 struct netlink_ext_ack *extack) 5480 { 5481 struct mvpp2_port *port = netdev_priv(dev); 5482 5483 ring->rx_max_pending = MVPP2_MAX_RXD_MAX; 5484 ring->tx_max_pending = MVPP2_MAX_TXD_MAX; 5485 ring->rx_pending = port->rx_ring_size; 5486 ring->tx_pending = port->tx_ring_size; 5487 } 5488 5489 static int 5490 mvpp2_ethtool_set_ringparam(struct net_device *dev, 5491 struct ethtool_ringparam *ring, 5492 struct kernel_ethtool_ringparam *kernel_ring, 5493 struct netlink_ext_ack *extack) 5494 { 5495 struct mvpp2_port *port = netdev_priv(dev); 5496 u16 prev_rx_ring_size = port->rx_ring_size; 5497 u16 prev_tx_ring_size = port->tx_ring_size; 5498 int err; 5499 5500 err = mvpp2_check_ringparam_valid(dev, ring); 5501 if (err) 5502 return err; 5503 5504 if (!netif_running(dev)) { 5505 port->rx_ring_size = ring->rx_pending; 5506 port->tx_ring_size = ring->tx_pending; 5507 return 0; 5508 } 5509 5510 /* The interface is running, so we have to force a 5511 * reallocation of the queues 5512 */ 5513 mvpp2_stop_dev(port); 5514 mvpp2_cleanup_rxqs(port); 5515 mvpp2_cleanup_txqs(port); 5516 5517 port->rx_ring_size = ring->rx_pending; 5518 port->tx_ring_size = ring->tx_pending; 5519 5520 err = mvpp2_setup_rxqs(port); 5521 if (err) { 5522 /* Reallocate Rx queues with the original ring size */ 5523 port->rx_ring_size = prev_rx_ring_size; 5524 ring->rx_pending = prev_rx_ring_size; 5525 err = mvpp2_setup_rxqs(port); 5526 if (err) 5527 goto err_out; 5528 } 5529 err = mvpp2_setup_txqs(port); 5530 if (err) { 5531 /* Reallocate Tx queues with the original ring size */ 5532 port->tx_ring_size = prev_tx_ring_size; 5533 ring->tx_pending = prev_tx_ring_size; 5534 err = mvpp2_setup_txqs(port); 5535 if (err) 5536 goto err_clean_rxqs; 5537 } 5538 5539 mvpp2_start_dev(port); 5540 mvpp2_egress_enable(port); 5541 mvpp2_ingress_enable(port); 5542 5543 return 0; 5544 5545 err_clean_rxqs: 5546 mvpp2_cleanup_rxqs(port); 5547 err_out: 5548 netdev_err(dev, "failed to change ring parameters"); 5549 return err; 5550 } 5551 5552 static void mvpp2_ethtool_get_pause_param(struct net_device *dev, 5553 struct ethtool_pauseparam *pause) 5554 { 5555 struct mvpp2_port *port = netdev_priv(dev); 5556 5557 if (!port->phylink) 5558 return; 5559 5560 phylink_ethtool_get_pauseparam(port->phylink, pause); 5561 } 5562 5563 static int mvpp2_ethtool_set_pause_param(struct net_device *dev, 5564 struct ethtool_pauseparam *pause) 5565 { 5566 struct mvpp2_port *port = netdev_priv(dev); 5567 5568 if (!port->phylink) 5569 return -ENOTSUPP; 5570 5571 return phylink_ethtool_set_pauseparam(port->phylink, pause); 5572 } 5573 5574 static int mvpp2_ethtool_get_link_ksettings(struct net_device *dev, 5575 struct ethtool_link_ksettings *cmd) 5576 { 5577 struct mvpp2_port *port = netdev_priv(dev); 5578 5579 if (!port->phylink) 5580 return -ENOTSUPP; 5581 5582 return phylink_ethtool_ksettings_get(port->phylink, cmd); 5583 } 5584 5585 static int mvpp2_ethtool_set_link_ksettings(struct net_device *dev, 5586 const struct ethtool_link_ksettings *cmd) 5587 { 5588 struct mvpp2_port *port = netdev_priv(dev); 5589 5590 if (!port->phylink) 5591 return -ENOTSUPP; 5592 5593 return phylink_ethtool_ksettings_set(port->phylink, cmd); 5594 } 5595 5596 static u32 mvpp2_ethtool_get_rx_ring_count(struct net_device *dev) 5597 { 5598 struct mvpp2_port *port = netdev_priv(dev); 5599 5600 return port->nrxqs; 5601 } 5602 5603 static int mvpp2_ethtool_get_rxnfc(struct net_device *dev, 5604 struct ethtool_rxnfc *info, u32 *rules) 5605 { 5606 struct mvpp2_port *port = netdev_priv(dev); 5607 int ret = 0, i, loc = 0; 5608 5609 if (!mvpp22_rss_is_supported(port)) 5610 return -EOPNOTSUPP; 5611 5612 switch (info->cmd) { 5613 case ETHTOOL_GRXCLSRLCNT: 5614 info->rule_cnt = port->n_rfs_rules; 5615 break; 5616 case ETHTOOL_GRXCLSRULE: 5617 ret = mvpp2_ethtool_cls_rule_get(port, info); 5618 break; 5619 case ETHTOOL_GRXCLSRLALL: 5620 for (i = 0; i < MVPP2_N_RFS_ENTRIES_PER_FLOW; i++) { 5621 if (loc == info->rule_cnt) { 5622 ret = -EMSGSIZE; 5623 break; 5624 } 5625 5626 if (port->rfs_rules[i]) 5627 rules[loc++] = i; 5628 } 5629 break; 5630 default: 5631 return -ENOTSUPP; 5632 } 5633 5634 return ret; 5635 } 5636 5637 static int mvpp2_ethtool_set_rxnfc(struct net_device *dev, 5638 struct ethtool_rxnfc *info) 5639 { 5640 struct mvpp2_port *port = netdev_priv(dev); 5641 int ret = 0; 5642 5643 if (!mvpp22_rss_is_supported(port)) 5644 return -EOPNOTSUPP; 5645 5646 switch (info->cmd) { 5647 case ETHTOOL_SRXCLSRLINS: 5648 ret = mvpp2_ethtool_cls_rule_ins(port, info); 5649 break; 5650 case ETHTOOL_SRXCLSRLDEL: 5651 ret = mvpp2_ethtool_cls_rule_del(port, info); 5652 break; 5653 default: 5654 return -EOPNOTSUPP; 5655 } 5656 return ret; 5657 } 5658 5659 static u32 mvpp2_ethtool_get_rxfh_indir_size(struct net_device *dev) 5660 { 5661 struct mvpp2_port *port = netdev_priv(dev); 5662 5663 return mvpp22_rss_is_supported(port) ? MVPP22_RSS_TABLE_ENTRIES : 0; 5664 } 5665 5666 static int mvpp2_ethtool_get_rxfh(struct net_device *dev, 5667 struct ethtool_rxfh_param *rxfh) 5668 { 5669 struct mvpp2_port *port = netdev_priv(dev); 5670 u32 rss_context = rxfh->rss_context; 5671 int ret = 0; 5672 5673 if (!mvpp22_rss_is_supported(port)) 5674 return -EOPNOTSUPP; 5675 if (rss_context >= MVPP22_N_RSS_TABLES) 5676 return -EINVAL; 5677 5678 rxfh->hfunc = ETH_RSS_HASH_CRC32; 5679 5680 if (rxfh->indir) 5681 ret = mvpp22_port_rss_ctx_indir_get(port, rss_context, 5682 rxfh->indir); 5683 5684 return ret; 5685 } 5686 5687 static bool mvpp2_ethtool_rxfh_okay(struct mvpp2_port *port, 5688 const struct ethtool_rxfh_param *rxfh) 5689 { 5690 if (!mvpp22_rss_is_supported(port)) 5691 return false; 5692 5693 if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE && 5694 rxfh->hfunc != ETH_RSS_HASH_CRC32) 5695 return false; 5696 5697 if (rxfh->key) 5698 return false; 5699 5700 return true; 5701 } 5702 5703 static int mvpp2_create_rxfh_context(struct net_device *dev, 5704 struct ethtool_rxfh_context *ctx, 5705 const struct ethtool_rxfh_param *rxfh, 5706 struct netlink_ext_ack *extack) 5707 { 5708 struct mvpp2_port *port = netdev_priv(dev); 5709 int ret = 0; 5710 5711 if (!mvpp2_ethtool_rxfh_okay(port, rxfh)) 5712 return -EOPNOTSUPP; 5713 5714 ctx->hfunc = ETH_RSS_HASH_CRC32; 5715 5716 ret = mvpp22_port_rss_ctx_create(port, rxfh->rss_context); 5717 if (ret) 5718 return ret; 5719 5720 if (!rxfh->indir) 5721 ret = mvpp22_port_rss_ctx_indir_get(port, rxfh->rss_context, 5722 ethtool_rxfh_context_indir(ctx)); 5723 else 5724 ret = mvpp22_port_rss_ctx_indir_set(port, rxfh->rss_context, 5725 rxfh->indir); 5726 return ret; 5727 } 5728 5729 static int mvpp2_modify_rxfh_context(struct net_device *dev, 5730 struct ethtool_rxfh_context *ctx, 5731 const struct ethtool_rxfh_param *rxfh, 5732 struct netlink_ext_ack *extack) 5733 { 5734 struct mvpp2_port *port = netdev_priv(dev); 5735 int ret = 0; 5736 5737 if (!mvpp2_ethtool_rxfh_okay(port, rxfh)) 5738 return -EOPNOTSUPP; 5739 5740 if (rxfh->indir) 5741 ret = mvpp22_port_rss_ctx_indir_set(port, rxfh->rss_context, 5742 rxfh->indir); 5743 return ret; 5744 } 5745 5746 static int mvpp2_remove_rxfh_context(struct net_device *dev, 5747 struct ethtool_rxfh_context *ctx, 5748 u32 rss_context, 5749 struct netlink_ext_ack *extack) 5750 { 5751 struct mvpp2_port *port = netdev_priv(dev); 5752 5753 return mvpp22_port_rss_ctx_delete(port, rss_context); 5754 } 5755 5756 static int mvpp2_ethtool_set_rxfh(struct net_device *dev, 5757 struct ethtool_rxfh_param *rxfh, 5758 struct netlink_ext_ack *extack) 5759 { 5760 return mvpp2_modify_rxfh_context(dev, NULL, rxfh, extack); 5761 } 5762 5763 static int mvpp2_ethtool_get_rxfh_fields(struct net_device *dev, 5764 struct ethtool_rxfh_fields *info) 5765 { 5766 struct mvpp2_port *port = netdev_priv(dev); 5767 5768 if (!mvpp22_rss_is_supported(port)) 5769 return -EOPNOTSUPP; 5770 5771 return mvpp2_ethtool_rxfh_get(port, info); 5772 } 5773 5774 static int mvpp2_ethtool_set_rxfh_fields(struct net_device *dev, 5775 const struct ethtool_rxfh_fields *info, 5776 struct netlink_ext_ack *extack) 5777 { 5778 struct mvpp2_port *port = netdev_priv(dev); 5779 5780 if (!mvpp22_rss_is_supported(port)) 5781 return -EOPNOTSUPP; 5782 5783 return mvpp2_ethtool_rxfh_set(port, info); 5784 } 5785 5786 static int mvpp2_ethtool_get_eee(struct net_device *dev, 5787 struct ethtool_keee *eee) 5788 { 5789 struct mvpp2_port *port = netdev_priv(dev); 5790 5791 if (!port->phylink) 5792 return -EOPNOTSUPP; 5793 5794 return phylink_ethtool_get_eee(port->phylink, eee); 5795 } 5796 5797 static int mvpp2_ethtool_set_eee(struct net_device *dev, 5798 struct ethtool_keee *eee) 5799 { 5800 struct mvpp2_port *port = netdev_priv(dev); 5801 5802 if (!port->phylink) 5803 return -EOPNOTSUPP; 5804 5805 return phylink_ethtool_set_eee(port->phylink, eee); 5806 } 5807 5808 /* Device ops */ 5809 5810 static const struct net_device_ops mvpp2_netdev_ops = { 5811 .ndo_open = mvpp2_open, 5812 .ndo_stop = mvpp2_stop, 5813 .ndo_start_xmit = mvpp2_tx, 5814 .ndo_set_rx_mode = mvpp2_set_rx_mode, 5815 .ndo_set_mac_address = mvpp2_set_mac_address, 5816 .ndo_change_mtu = mvpp2_change_mtu, 5817 .ndo_get_stats64 = mvpp2_get_stats64, 5818 .ndo_eth_ioctl = mvpp2_ioctl, 5819 .ndo_vlan_rx_add_vid = mvpp2_vlan_rx_add_vid, 5820 .ndo_vlan_rx_kill_vid = mvpp2_vlan_rx_kill_vid, 5821 .ndo_set_features = mvpp2_set_features, 5822 .ndo_bpf = mvpp2_xdp, 5823 .ndo_xdp_xmit = mvpp2_xdp_xmit, 5824 .ndo_hwtstamp_get = mvpp2_hwtstamp_get, 5825 .ndo_hwtstamp_set = mvpp2_hwtstamp_set, 5826 }; 5827 5828 static const struct ethtool_ops mvpp2_eth_tool_ops = { 5829 .rxfh_max_num_contexts = MVPP22_N_RSS_TABLES, 5830 .supported_coalesce_params = ETHTOOL_COALESCE_USECS | 5831 ETHTOOL_COALESCE_MAX_FRAMES, 5832 .nway_reset = mvpp2_ethtool_nway_reset, 5833 .get_link = ethtool_op_get_link, 5834 .get_ts_info = mvpp2_ethtool_get_ts_info, 5835 .set_coalesce = mvpp2_ethtool_set_coalesce, 5836 .get_coalesce = mvpp2_ethtool_get_coalesce, 5837 .get_drvinfo = mvpp2_ethtool_get_drvinfo, 5838 .get_ringparam = mvpp2_ethtool_get_ringparam, 5839 .set_ringparam = mvpp2_ethtool_set_ringparam, 5840 .get_strings = mvpp2_ethtool_get_strings, 5841 .get_ethtool_stats = mvpp2_ethtool_get_stats, 5842 .get_sset_count = mvpp2_ethtool_get_sset_count, 5843 .get_pauseparam = mvpp2_ethtool_get_pause_param, 5844 .set_pauseparam = mvpp2_ethtool_set_pause_param, 5845 .get_link_ksettings = mvpp2_ethtool_get_link_ksettings, 5846 .set_link_ksettings = mvpp2_ethtool_set_link_ksettings, 5847 .get_rx_ring_count = mvpp2_ethtool_get_rx_ring_count, 5848 .get_rxnfc = mvpp2_ethtool_get_rxnfc, 5849 .set_rxnfc = mvpp2_ethtool_set_rxnfc, 5850 .get_rxfh_indir_size = mvpp2_ethtool_get_rxfh_indir_size, 5851 .get_rxfh = mvpp2_ethtool_get_rxfh, 5852 .set_rxfh = mvpp2_ethtool_set_rxfh, 5853 .get_rxfh_fields = mvpp2_ethtool_get_rxfh_fields, 5854 .set_rxfh_fields = mvpp2_ethtool_set_rxfh_fields, 5855 .create_rxfh_context = mvpp2_create_rxfh_context, 5856 .modify_rxfh_context = mvpp2_modify_rxfh_context, 5857 .remove_rxfh_context = mvpp2_remove_rxfh_context, 5858 .get_eee = mvpp2_ethtool_get_eee, 5859 .set_eee = mvpp2_ethtool_set_eee, 5860 }; 5861 5862 /* Used for PPv2.1, or PPv2.2 with the old Device Tree binding that 5863 * had a single IRQ defined per-port. 5864 */ 5865 static int mvpp2_simple_queue_vectors_init(struct mvpp2_port *port, 5866 struct device_node *port_node) 5867 { 5868 struct mvpp2_queue_vector *v = &port->qvecs[0]; 5869 5870 v->first_rxq = 0; 5871 v->nrxqs = port->nrxqs; 5872 v->type = MVPP2_QUEUE_VECTOR_SHARED; 5873 v->sw_thread_id = 0; 5874 v->sw_thread_mask = *cpumask_bits(cpu_online_mask); 5875 v->port = port; 5876 v->irq = irq_of_parse_and_map(port_node, 0); 5877 if (v->irq <= 0) 5878 return -EINVAL; 5879 netif_napi_add(port->dev, &v->napi, mvpp2_poll); 5880 5881 port->nqvecs = 1; 5882 5883 return 0; 5884 } 5885 5886 static int mvpp2_multi_queue_vectors_init(struct mvpp2_port *port, 5887 struct device_node *port_node) 5888 { 5889 struct mvpp2 *priv = port->priv; 5890 struct mvpp2_queue_vector *v; 5891 int i, ret; 5892 5893 switch (queue_mode) { 5894 case MVPP2_QDIST_SINGLE_MODE: 5895 port->nqvecs = priv->nthreads + 1; 5896 break; 5897 case MVPP2_QDIST_MULTI_MODE: 5898 port->nqvecs = priv->nthreads; 5899 break; 5900 } 5901 5902 for (i = 0; i < port->nqvecs; i++) { 5903 char irqname[16]; 5904 5905 v = port->qvecs + i; 5906 5907 v->port = port; 5908 v->type = MVPP2_QUEUE_VECTOR_PRIVATE; 5909 v->sw_thread_id = i; 5910 v->sw_thread_mask = BIT(i); 5911 5912 if (port->flags & MVPP2_F_DT_COMPAT) 5913 snprintf(irqname, sizeof(irqname), "tx-cpu%d", i); 5914 else 5915 snprintf(irqname, sizeof(irqname), "hif%d", i); 5916 5917 if (queue_mode == MVPP2_QDIST_MULTI_MODE) { 5918 v->first_rxq = i; 5919 v->nrxqs = 1; 5920 } else if (queue_mode == MVPP2_QDIST_SINGLE_MODE && 5921 i == (port->nqvecs - 1)) { 5922 v->first_rxq = 0; 5923 v->nrxqs = port->nrxqs; 5924 v->type = MVPP2_QUEUE_VECTOR_SHARED; 5925 5926 if (port->flags & MVPP2_F_DT_COMPAT) 5927 strscpy(irqname, "rx-shared", sizeof(irqname)); 5928 } 5929 5930 if (port_node) 5931 v->irq = of_irq_get_byname(port_node, irqname); 5932 else 5933 v->irq = fwnode_irq_get(port->fwnode, i); 5934 if (v->irq <= 0) { 5935 ret = -EINVAL; 5936 goto err; 5937 } 5938 5939 netif_napi_add(port->dev, &v->napi, mvpp2_poll); 5940 } 5941 5942 return 0; 5943 5944 err: 5945 for (i = 0; i < port->nqvecs; i++) 5946 irq_dispose_mapping(port->qvecs[i].irq); 5947 return ret; 5948 } 5949 5950 static int mvpp2_queue_vectors_init(struct mvpp2_port *port, 5951 struct device_node *port_node) 5952 { 5953 if (port->has_tx_irqs) 5954 return mvpp2_multi_queue_vectors_init(port, port_node); 5955 else 5956 return mvpp2_simple_queue_vectors_init(port, port_node); 5957 } 5958 5959 static void mvpp2_queue_vectors_deinit(struct mvpp2_port *port) 5960 { 5961 int i; 5962 5963 for (i = 0; i < port->nqvecs; i++) 5964 irq_dispose_mapping(port->qvecs[i].irq); 5965 } 5966 5967 /* Configure Rx queue group interrupt for this port */ 5968 static void mvpp2_rx_irqs_setup(struct mvpp2_port *port) 5969 { 5970 struct mvpp2 *priv = port->priv; 5971 u32 val; 5972 int i; 5973 5974 if (priv->hw_version == MVPP21) { 5975 mvpp2_write(priv, MVPP21_ISR_RXQ_GROUP_REG(port->id), 5976 port->nrxqs); 5977 return; 5978 } 5979 5980 /* Handle the more complicated PPv2.2 and PPv2.3 case */ 5981 for (i = 0; i < port->nqvecs; i++) { 5982 struct mvpp2_queue_vector *qv = port->qvecs + i; 5983 5984 if (!qv->nrxqs) 5985 continue; 5986 5987 val = qv->sw_thread_id; 5988 val |= port->id << MVPP22_ISR_RXQ_GROUP_INDEX_GROUP_OFFSET; 5989 mvpp2_write(priv, MVPP22_ISR_RXQ_GROUP_INDEX_REG, val); 5990 5991 val = qv->first_rxq; 5992 val |= qv->nrxqs << MVPP22_ISR_RXQ_SUB_GROUP_SIZE_OFFSET; 5993 mvpp2_write(priv, MVPP22_ISR_RXQ_SUB_GROUP_CONFIG_REG, val); 5994 } 5995 } 5996 5997 /* Initialize port HW */ 5998 static int mvpp2_port_init(struct mvpp2_port *port) 5999 { 6000 struct device *dev = port->dev->dev.parent; 6001 struct mvpp2 *priv = port->priv; 6002 struct mvpp2_txq_pcpu *txq_pcpu; 6003 unsigned int thread; 6004 int queue, err, val; 6005 6006 /* Checks for hardware constraints */ 6007 if (port->first_rxq + port->nrxqs > 6008 MVPP2_MAX_PORTS * priv->max_port_rxqs) 6009 return -EINVAL; 6010 6011 if (port->nrxqs > priv->max_port_rxqs || port->ntxqs > MVPP2_MAX_TXQ) 6012 return -EINVAL; 6013 6014 /* Disable port */ 6015 mvpp2_egress_disable(port); 6016 mvpp2_port_disable(port); 6017 6018 if (mvpp2_is_xlg(port->phy_interface)) { 6019 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 6020 val &= ~MVPP22_XLG_CTRL0_FORCE_LINK_PASS; 6021 val |= MVPP22_XLG_CTRL0_FORCE_LINK_DOWN; 6022 writel(val, port->base + MVPP22_XLG_CTRL0_REG); 6023 } else { 6024 val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6025 val &= ~MVPP2_GMAC_FORCE_LINK_PASS; 6026 val |= MVPP2_GMAC_FORCE_LINK_DOWN; 6027 writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6028 } 6029 6030 port->tx_time_coal = MVPP2_TXDONE_COAL_USEC; 6031 6032 port->txqs = devm_kcalloc(dev, port->ntxqs, sizeof(*port->txqs), 6033 GFP_KERNEL); 6034 if (!port->txqs) 6035 return -ENOMEM; 6036 6037 /* Associate physical Tx queues to this port and initialize. 6038 * The mapping is predefined. 6039 */ 6040 for (queue = 0; queue < port->ntxqs; queue++) { 6041 int queue_phy_id = mvpp2_txq_phys(port->id, queue); 6042 struct mvpp2_tx_queue *txq; 6043 6044 txq = devm_kzalloc(dev, sizeof(*txq), GFP_KERNEL); 6045 if (!txq) { 6046 err = -ENOMEM; 6047 goto err_free_percpu; 6048 } 6049 6050 txq->pcpu = alloc_percpu(struct mvpp2_txq_pcpu); 6051 if (!txq->pcpu) { 6052 err = -ENOMEM; 6053 goto err_free_percpu; 6054 } 6055 6056 txq->id = queue_phy_id; 6057 txq->log_id = queue; 6058 txq->done_pkts_coal = MVPP2_TXDONE_COAL_PKTS_THRESH; 6059 for (thread = 0; thread < priv->nthreads; thread++) { 6060 txq_pcpu = per_cpu_ptr(txq->pcpu, thread); 6061 txq_pcpu->thread = thread; 6062 } 6063 6064 port->txqs[queue] = txq; 6065 } 6066 6067 port->rxqs = devm_kcalloc(dev, port->nrxqs, sizeof(*port->rxqs), 6068 GFP_KERNEL); 6069 if (!port->rxqs) { 6070 err = -ENOMEM; 6071 goto err_free_percpu; 6072 } 6073 6074 /* Allocate and initialize Rx queue for this port */ 6075 for (queue = 0; queue < port->nrxqs; queue++) { 6076 struct mvpp2_rx_queue *rxq; 6077 6078 /* Map physical Rx queue to port's logical Rx queue */ 6079 rxq = devm_kzalloc(dev, sizeof(*rxq), GFP_KERNEL); 6080 if (!rxq) { 6081 err = -ENOMEM; 6082 goto err_free_percpu; 6083 } 6084 /* Map this Rx queue to a physical queue */ 6085 rxq->id = port->first_rxq + queue; 6086 rxq->port = port->id; 6087 rxq->logic_rxq = queue; 6088 6089 port->rxqs[queue] = rxq; 6090 } 6091 6092 mvpp2_rx_irqs_setup(port); 6093 6094 /* Create Rx descriptor rings */ 6095 for (queue = 0; queue < port->nrxqs; queue++) { 6096 struct mvpp2_rx_queue *rxq = port->rxqs[queue]; 6097 6098 rxq->size = port->rx_ring_size; 6099 rxq->pkts_coal = MVPP2_RX_COAL_PKTS; 6100 rxq->time_coal = MVPP2_RX_COAL_USEC; 6101 } 6102 6103 mvpp2_ingress_disable(port); 6104 6105 /* Port default configuration */ 6106 mvpp2_defaults_set(port); 6107 6108 /* Port's classifier configuration */ 6109 mvpp2_cls_oversize_rxq_set(port); 6110 mvpp2_cls_port_config(port); 6111 6112 if (mvpp22_rss_is_supported(port)) 6113 mvpp22_port_rss_init(port); 6114 6115 /* Provide an initial Rx packet size */ 6116 port->pkt_size = MVPP2_RX_PKT_SIZE(port->dev->mtu); 6117 6118 /* Initialize pools for swf */ 6119 err = mvpp2_swf_bm_pool_init(port); 6120 if (err) 6121 goto err_free_percpu; 6122 6123 /* Clear all port stats */ 6124 mvpp2_read_stats(port); 6125 memset(port->ethtool_stats, 0, 6126 MVPP2_N_ETHTOOL_STATS(port->ntxqs, port->nrxqs) * sizeof(u64)); 6127 6128 return 0; 6129 6130 err_free_percpu: 6131 for (queue = 0; queue < port->ntxqs; queue++) { 6132 if (!port->txqs[queue]) 6133 continue; 6134 free_percpu(port->txqs[queue]->pcpu); 6135 } 6136 return err; 6137 } 6138 6139 static bool mvpp22_port_has_legacy_tx_irqs(struct device_node *port_node, 6140 unsigned long *flags) 6141 { 6142 char *irqs[5] = { "rx-shared", "tx-cpu0", "tx-cpu1", "tx-cpu2", 6143 "tx-cpu3" }; 6144 int i; 6145 6146 for (i = 0; i < 5; i++) 6147 if (of_property_match_string(port_node, "interrupt-names", 6148 irqs[i]) < 0) 6149 return false; 6150 6151 *flags |= MVPP2_F_DT_COMPAT; 6152 return true; 6153 } 6154 6155 /* Checks if the port dt description has the required Tx interrupts: 6156 * - PPv2.1: there are no such interrupts. 6157 * - PPv2.2 and PPv2.3: 6158 * - The old DTs have: "rx-shared", "tx-cpuX" with X in [0...3] 6159 * - The new ones have: "hifX" with X in [0..8] 6160 * 6161 * All those variants are supported to keep the backward compatibility. 6162 */ 6163 static bool mvpp2_port_has_irqs(struct mvpp2 *priv, 6164 struct device_node *port_node, 6165 unsigned long *flags) 6166 { 6167 char name[5]; 6168 int i; 6169 6170 /* ACPI */ 6171 if (!port_node) 6172 return true; 6173 6174 if (priv->hw_version == MVPP21) 6175 return false; 6176 6177 if (mvpp22_port_has_legacy_tx_irqs(port_node, flags)) 6178 return true; 6179 6180 for (i = 0; i < MVPP2_MAX_THREADS; i++) { 6181 snprintf(name, 5, "hif%d", i); 6182 if (of_property_match_string(port_node, "interrupt-names", 6183 name) < 0) 6184 return false; 6185 } 6186 6187 return true; 6188 } 6189 6190 static int mvpp2_port_copy_mac_addr(struct net_device *dev, struct mvpp2 *priv, 6191 struct fwnode_handle *fwnode, 6192 char **mac_from) 6193 { 6194 struct mvpp2_port *port = netdev_priv(dev); 6195 char hw_mac_addr[ETH_ALEN] = {0}; 6196 char fw_mac_addr[ETH_ALEN]; 6197 int ret; 6198 6199 if (!fwnode_get_mac_address(fwnode, fw_mac_addr)) { 6200 *mac_from = "firmware node"; 6201 eth_hw_addr_set(dev, fw_mac_addr); 6202 return 0; 6203 } 6204 6205 if (priv->hw_version == MVPP21) { 6206 mvpp21_get_mac_address(port, hw_mac_addr); 6207 if (is_valid_ether_addr(hw_mac_addr)) { 6208 *mac_from = "hardware"; 6209 eth_hw_addr_set(dev, hw_mac_addr); 6210 return 0; 6211 } 6212 } 6213 6214 /* Only valid on OF enabled platforms */ 6215 ret = of_get_mac_address_nvmem(to_of_node(fwnode), fw_mac_addr); 6216 if (ret == -EPROBE_DEFER) 6217 return ret; 6218 if (!ret) { 6219 *mac_from = "nvmem cell"; 6220 eth_hw_addr_set(dev, fw_mac_addr); 6221 return 0; 6222 } 6223 6224 *mac_from = "random"; 6225 eth_hw_addr_random(dev); 6226 6227 return 0; 6228 } 6229 6230 static struct mvpp2_port *mvpp2_phylink_to_port(struct phylink_config *config) 6231 { 6232 return container_of(config, struct mvpp2_port, phylink_config); 6233 } 6234 6235 static struct mvpp2_port *mvpp2_pcs_xlg_to_port(struct phylink_pcs *pcs) 6236 { 6237 return container_of(pcs, struct mvpp2_port, pcs_xlg); 6238 } 6239 6240 static struct mvpp2_port *mvpp2_pcs_gmac_to_port(struct phylink_pcs *pcs) 6241 { 6242 return container_of(pcs, struct mvpp2_port, pcs_gmac); 6243 } 6244 6245 static unsigned int mvpp2_xjg_pcs_inband_caps(struct phylink_pcs *pcs, 6246 phy_interface_t interface) 6247 { 6248 return LINK_INBAND_DISABLE; 6249 } 6250 6251 static void mvpp2_xlg_pcs_get_state(struct phylink_pcs *pcs, 6252 unsigned int neg_mode, 6253 struct phylink_link_state *state) 6254 { 6255 struct mvpp2_port *port = mvpp2_pcs_xlg_to_port(pcs); 6256 u32 val; 6257 6258 if (port->phy_interface == PHY_INTERFACE_MODE_5GBASER) 6259 state->speed = SPEED_5000; 6260 else 6261 state->speed = SPEED_10000; 6262 state->duplex = 1; 6263 state->an_complete = 1; 6264 6265 val = readl(port->base + MVPP22_XLG_STATUS); 6266 state->link = !!(val & MVPP22_XLG_STATUS_LINK_UP); 6267 6268 state->pause = 0; 6269 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 6270 if (val & MVPP22_XLG_CTRL0_TX_FLOW_CTRL_EN) 6271 state->pause |= MLO_PAUSE_TX; 6272 if (val & MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN) 6273 state->pause |= MLO_PAUSE_RX; 6274 } 6275 6276 static int mvpp2_xlg_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode, 6277 phy_interface_t interface, 6278 const unsigned long *advertising, 6279 bool permit_pause_to_mac) 6280 { 6281 return 0; 6282 } 6283 6284 static const struct phylink_pcs_ops mvpp2_phylink_xlg_pcs_ops = { 6285 .pcs_inband_caps = mvpp2_xjg_pcs_inband_caps, 6286 .pcs_get_state = mvpp2_xlg_pcs_get_state, 6287 .pcs_config = mvpp2_xlg_pcs_config, 6288 }; 6289 6290 static unsigned int mvpp2_gmac_pcs_inband_caps(struct phylink_pcs *pcs, 6291 phy_interface_t interface) 6292 { 6293 /* When operating in an 802.3z mode, we must have AN enabled: 6294 * Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ... 6295 * When <PortType> = 1 (1000BASE-X) this field must be set to 1. 6296 * Therefore, inband is "required". 6297 */ 6298 if (phy_interface_mode_is_8023z(interface)) 6299 return LINK_INBAND_ENABLE; 6300 6301 /* SGMII and RGMII can be configured to use inband signalling of the 6302 * AN result. Indicate these as "possible". 6303 */ 6304 if (interface == PHY_INTERFACE_MODE_SGMII || 6305 phy_interface_mode_is_rgmii(interface)) 6306 return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE; 6307 6308 /* For any other modes, indicate that inband is not supported. */ 6309 return LINK_INBAND_DISABLE; 6310 } 6311 6312 static void mvpp2_gmac_pcs_get_state(struct phylink_pcs *pcs, 6313 unsigned int neg_mode, 6314 struct phylink_link_state *state) 6315 { 6316 struct mvpp2_port *port = mvpp2_pcs_gmac_to_port(pcs); 6317 u32 val; 6318 6319 val = readl(port->base + MVPP2_GMAC_STATUS0); 6320 6321 state->an_complete = !!(val & MVPP2_GMAC_STATUS0_AN_COMPLETE); 6322 state->link = !!(val & MVPP2_GMAC_STATUS0_LINK_UP); 6323 state->duplex = !!(val & MVPP2_GMAC_STATUS0_FULL_DUPLEX); 6324 6325 switch (port->phy_interface) { 6326 case PHY_INTERFACE_MODE_1000BASEX: 6327 state->speed = SPEED_1000; 6328 break; 6329 case PHY_INTERFACE_MODE_2500BASEX: 6330 state->speed = SPEED_2500; 6331 break; 6332 default: 6333 if (val & MVPP2_GMAC_STATUS0_GMII_SPEED) 6334 state->speed = SPEED_1000; 6335 else if (val & MVPP2_GMAC_STATUS0_MII_SPEED) 6336 state->speed = SPEED_100; 6337 else 6338 state->speed = SPEED_10; 6339 } 6340 6341 state->pause = 0; 6342 if (val & MVPP2_GMAC_STATUS0_RX_PAUSE) 6343 state->pause |= MLO_PAUSE_RX; 6344 if (val & MVPP2_GMAC_STATUS0_TX_PAUSE) 6345 state->pause |= MLO_PAUSE_TX; 6346 } 6347 6348 static int mvpp2_gmac_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode, 6349 phy_interface_t interface, 6350 const unsigned long *advertising, 6351 bool permit_pause_to_mac) 6352 { 6353 struct mvpp2_port *port = mvpp2_pcs_gmac_to_port(pcs); 6354 u32 mask, val, an, old_an, changed; 6355 6356 mask = MVPP2_GMAC_IN_BAND_AUTONEG_BYPASS | 6357 MVPP2_GMAC_IN_BAND_AUTONEG | 6358 MVPP2_GMAC_AN_SPEED_EN | 6359 MVPP2_GMAC_FLOW_CTRL_AUTONEG | 6360 MVPP2_GMAC_AN_DUPLEX_EN; 6361 6362 if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) { 6363 mask |= MVPP2_GMAC_CONFIG_MII_SPEED | 6364 MVPP2_GMAC_CONFIG_GMII_SPEED | 6365 MVPP2_GMAC_CONFIG_FULL_DUPLEX; 6366 val = MVPP2_GMAC_IN_BAND_AUTONEG; 6367 6368 if (interface == PHY_INTERFACE_MODE_SGMII) { 6369 /* SGMII mode receives the speed and duplex from PHY */ 6370 val |= MVPP2_GMAC_AN_SPEED_EN | 6371 MVPP2_GMAC_AN_DUPLEX_EN; 6372 } else { 6373 /* 802.3z mode has fixed speed and duplex */ 6374 val |= MVPP2_GMAC_CONFIG_GMII_SPEED | 6375 MVPP2_GMAC_CONFIG_FULL_DUPLEX; 6376 6377 /* The FLOW_CTRL_AUTONEG bit selects either the hardware 6378 * automatically or the bits in MVPP22_GMAC_CTRL_4_REG 6379 * manually controls the GMAC pause modes. 6380 */ 6381 if (permit_pause_to_mac) 6382 val |= MVPP2_GMAC_FLOW_CTRL_AUTONEG; 6383 6384 /* Configure advertisement bits */ 6385 mask |= MVPP2_GMAC_FC_ADV_EN | MVPP2_GMAC_FC_ADV_ASM_EN; 6386 if (phylink_test(advertising, Pause)) 6387 val |= MVPP2_GMAC_FC_ADV_EN; 6388 if (phylink_test(advertising, Asym_Pause)) 6389 val |= MVPP2_GMAC_FC_ADV_ASM_EN; 6390 } 6391 } else { 6392 val = 0; 6393 } 6394 6395 old_an = an = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6396 an = (an & ~mask) | val; 6397 changed = an ^ old_an; 6398 if (changed) 6399 writel(an, port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6400 6401 /* We are only interested in the advertisement bits changing */ 6402 return changed & (MVPP2_GMAC_FC_ADV_EN | MVPP2_GMAC_FC_ADV_ASM_EN); 6403 } 6404 6405 static void mvpp2_gmac_pcs_an_restart(struct phylink_pcs *pcs) 6406 { 6407 struct mvpp2_port *port = mvpp2_pcs_gmac_to_port(pcs); 6408 u32 val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6409 6410 writel(val | MVPP2_GMAC_IN_BAND_RESTART_AN, 6411 port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6412 writel(val & ~MVPP2_GMAC_IN_BAND_RESTART_AN, 6413 port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6414 } 6415 6416 static const struct phylink_pcs_ops mvpp2_phylink_gmac_pcs_ops = { 6417 .pcs_inband_caps = mvpp2_gmac_pcs_inband_caps, 6418 .pcs_get_state = mvpp2_gmac_pcs_get_state, 6419 .pcs_config = mvpp2_gmac_pcs_config, 6420 .pcs_an_restart = mvpp2_gmac_pcs_an_restart, 6421 }; 6422 6423 static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode, 6424 const struct phylink_link_state *state) 6425 { 6426 u32 val; 6427 6428 mvpp2_modify(port->base + MVPP22_XLG_CTRL0_REG, 6429 MVPP22_XLG_CTRL0_MAC_RESET_DIS, 6430 MVPP22_XLG_CTRL0_MAC_RESET_DIS); 6431 mvpp2_modify(port->base + MVPP22_XLG_CTRL4_REG, 6432 MVPP22_XLG_CTRL4_MACMODSELECT_GMAC | 6433 MVPP22_XLG_CTRL4_EN_IDLE_CHECK | 6434 MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC, 6435 MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC); 6436 6437 /* Wait for reset to deassert */ 6438 do { 6439 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 6440 } while (!(val & MVPP22_XLG_CTRL0_MAC_RESET_DIS)); 6441 } 6442 6443 static void mvpp2_gmac_config(struct mvpp2_port *port, unsigned int mode, 6444 const struct phylink_link_state *state) 6445 { 6446 u32 old_ctrl0, ctrl0; 6447 u32 old_ctrl2, ctrl2; 6448 u32 old_ctrl4, ctrl4; 6449 6450 old_ctrl0 = ctrl0 = readl(port->base + MVPP2_GMAC_CTRL_0_REG); 6451 old_ctrl2 = ctrl2 = readl(port->base + MVPP2_GMAC_CTRL_2_REG); 6452 old_ctrl4 = ctrl4 = readl(port->base + MVPP22_GMAC_CTRL_4_REG); 6453 6454 ctrl0 &= ~MVPP2_GMAC_PORT_TYPE_MASK; 6455 ctrl2 &= ~(MVPP2_GMAC_INBAND_AN_MASK | MVPP2_GMAC_PCS_ENABLE_MASK | MVPP2_GMAC_FLOW_CTRL_MASK); 6456 6457 /* Configure port type */ 6458 if (phy_interface_mode_is_8023z(state->interface)) { 6459 ctrl2 |= MVPP2_GMAC_PCS_ENABLE_MASK; 6460 ctrl4 &= ~MVPP22_CTRL4_EXT_PIN_GMII_SEL; 6461 ctrl4 |= MVPP22_CTRL4_SYNC_BYPASS_DIS | 6462 MVPP22_CTRL4_DP_CLK_SEL | 6463 MVPP22_CTRL4_QSGMII_BYPASS_ACTIVE; 6464 } else if (state->interface == PHY_INTERFACE_MODE_SGMII) { 6465 ctrl2 |= MVPP2_GMAC_PCS_ENABLE_MASK | MVPP2_GMAC_INBAND_AN_MASK; 6466 ctrl4 &= ~MVPP22_CTRL4_EXT_PIN_GMII_SEL; 6467 ctrl4 |= MVPP22_CTRL4_SYNC_BYPASS_DIS | 6468 MVPP22_CTRL4_DP_CLK_SEL | 6469 MVPP22_CTRL4_QSGMII_BYPASS_ACTIVE; 6470 } else if (phy_interface_mode_is_rgmii(state->interface)) { 6471 ctrl4 &= ~MVPP22_CTRL4_DP_CLK_SEL; 6472 ctrl4 |= MVPP22_CTRL4_EXT_PIN_GMII_SEL | 6473 MVPP22_CTRL4_SYNC_BYPASS_DIS | 6474 MVPP22_CTRL4_QSGMII_BYPASS_ACTIVE; 6475 } 6476 6477 /* Configure negotiation style */ 6478 if (!phylink_autoneg_inband(mode)) { 6479 /* Phy or fixed speed - no in-band AN, nothing to do, leave the 6480 * configured speed, duplex and flow control as-is. 6481 */ 6482 } else if (state->interface == PHY_INTERFACE_MODE_SGMII) { 6483 /* SGMII in-band mode receives the speed and duplex from 6484 * the PHY. Flow control information is not received. */ 6485 } else if (phy_interface_mode_is_8023z(state->interface)) { 6486 /* 1000BaseX and 2500BaseX ports cannot negotiate speed nor can 6487 * they negotiate duplex: they are always operating with a fixed 6488 * speed of 1000/2500Mbps in full duplex, so force 1000/2500 6489 * speed and full duplex here. 6490 */ 6491 ctrl0 |= MVPP2_GMAC_PORT_TYPE_MASK; 6492 } 6493 6494 if (old_ctrl0 != ctrl0) 6495 writel(ctrl0, port->base + MVPP2_GMAC_CTRL_0_REG); 6496 if (old_ctrl2 != ctrl2) 6497 writel(ctrl2, port->base + MVPP2_GMAC_CTRL_2_REG); 6498 if (old_ctrl4 != ctrl4) 6499 writel(ctrl4, port->base + MVPP22_GMAC_CTRL_4_REG); 6500 } 6501 6502 static struct phylink_pcs *mvpp2_select_pcs(struct phylink_config *config, 6503 phy_interface_t interface) 6504 { 6505 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6506 6507 /* Select the appropriate PCS operations depending on the 6508 * configured interface mode. We will only switch to a mode 6509 * that the validate() checks have already passed. 6510 */ 6511 if (mvpp2_is_xlg(interface)) 6512 return &port->pcs_xlg; 6513 else 6514 return &port->pcs_gmac; 6515 } 6516 6517 static int mvpp2_mac_prepare(struct phylink_config *config, unsigned int mode, 6518 phy_interface_t interface) 6519 { 6520 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6521 6522 /* Check for invalid configuration */ 6523 if (mvpp2_is_xlg(interface) && port->gop_id != 0) { 6524 netdev_err(port->dev, "Invalid mode on %s\n", port->dev->name); 6525 return -EINVAL; 6526 } 6527 6528 if (port->phy_interface != interface || 6529 phylink_autoneg_inband(mode)) { 6530 /* Force the link down when changing the interface or if in 6531 * in-band mode to ensure we do not change the configuration 6532 * while the hardware is indicating link is up. We force both 6533 * XLG and GMAC down to ensure that they're both in a known 6534 * state. 6535 */ 6536 mvpp2_modify(port->base + MVPP2_GMAC_AUTONEG_CONFIG, 6537 MVPP2_GMAC_FORCE_LINK_PASS | 6538 MVPP2_GMAC_FORCE_LINK_DOWN, 6539 MVPP2_GMAC_FORCE_LINK_DOWN); 6540 6541 if (mvpp2_port_supports_xlg(port)) 6542 mvpp2_modify(port->base + MVPP22_XLG_CTRL0_REG, 6543 MVPP22_XLG_CTRL0_FORCE_LINK_PASS | 6544 MVPP22_XLG_CTRL0_FORCE_LINK_DOWN, 6545 MVPP22_XLG_CTRL0_FORCE_LINK_DOWN); 6546 } 6547 6548 /* Make sure the port is disabled when reconfiguring the mode */ 6549 mvpp2_port_disable(port); 6550 6551 if (port->phy_interface != interface) { 6552 /* Place GMAC into reset */ 6553 mvpp2_modify(port->base + MVPP2_GMAC_CTRL_2_REG, 6554 MVPP2_GMAC_PORT_RESET_MASK, 6555 MVPP2_GMAC_PORT_RESET_MASK); 6556 6557 if (port->priv->hw_version >= MVPP22) { 6558 mvpp22_gop_mask_irq(port); 6559 6560 phy_power_off(port->comphy); 6561 6562 /* Reconfigure the serdes lanes */ 6563 mvpp22_mode_reconfigure(port, interface); 6564 } 6565 } 6566 6567 return 0; 6568 } 6569 6570 static void mvpp2_mac_config(struct phylink_config *config, unsigned int mode, 6571 const struct phylink_link_state *state) 6572 { 6573 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6574 6575 /* mac (re)configuration */ 6576 if (mvpp2_is_xlg(state->interface)) 6577 mvpp2_xlg_config(port, mode, state); 6578 else if (phy_interface_mode_is_rgmii(state->interface) || 6579 phy_interface_mode_is_8023z(state->interface) || 6580 state->interface == PHY_INTERFACE_MODE_SGMII) 6581 mvpp2_gmac_config(port, mode, state); 6582 6583 if (port->priv->hw_version == MVPP21 && port->flags & MVPP2_F_LOOPBACK) 6584 mvpp2_port_loopback_set(port, state); 6585 } 6586 6587 static int mvpp2_mac_finish(struct phylink_config *config, unsigned int mode, 6588 phy_interface_t interface) 6589 { 6590 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6591 6592 if (port->priv->hw_version >= MVPP22 && 6593 port->phy_interface != interface) { 6594 port->phy_interface = interface; 6595 6596 /* Unmask interrupts */ 6597 mvpp22_gop_unmask_irq(port); 6598 } 6599 6600 if (!mvpp2_is_xlg(interface)) { 6601 /* Release GMAC reset and wait */ 6602 mvpp2_modify(port->base + MVPP2_GMAC_CTRL_2_REG, 6603 MVPP2_GMAC_PORT_RESET_MASK, 0); 6604 6605 while (readl(port->base + MVPP2_GMAC_CTRL_2_REG) & 6606 MVPP2_GMAC_PORT_RESET_MASK) 6607 continue; 6608 } 6609 6610 mvpp2_port_enable(port); 6611 6612 /* Allow the link to come up if in in-band mode, otherwise the 6613 * link is forced via mac_link_down()/mac_link_up() 6614 */ 6615 if (phylink_autoneg_inband(mode)) { 6616 if (mvpp2_is_xlg(interface)) 6617 mvpp2_modify(port->base + MVPP22_XLG_CTRL0_REG, 6618 MVPP22_XLG_CTRL0_FORCE_LINK_PASS | 6619 MVPP22_XLG_CTRL0_FORCE_LINK_DOWN, 0); 6620 else 6621 mvpp2_modify(port->base + MVPP2_GMAC_AUTONEG_CONFIG, 6622 MVPP2_GMAC_FORCE_LINK_PASS | 6623 MVPP2_GMAC_FORCE_LINK_DOWN, 0); 6624 } 6625 6626 return 0; 6627 } 6628 6629 static void mvpp2_mac_link_up(struct phylink_config *config, 6630 struct phy_device *phy, 6631 unsigned int mode, phy_interface_t interface, 6632 int speed, int duplex, 6633 bool tx_pause, bool rx_pause) 6634 { 6635 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6636 u32 val; 6637 int i; 6638 6639 if (mvpp2_is_xlg(interface)) { 6640 if (!phylink_autoneg_inband(mode)) { 6641 val = MVPP22_XLG_CTRL0_FORCE_LINK_PASS; 6642 if (tx_pause) 6643 val |= MVPP22_XLG_CTRL0_TX_FLOW_CTRL_EN; 6644 if (rx_pause) 6645 val |= MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN; 6646 6647 mvpp2_modify(port->base + MVPP22_XLG_CTRL0_REG, 6648 MVPP22_XLG_CTRL0_FORCE_LINK_DOWN | 6649 MVPP22_XLG_CTRL0_FORCE_LINK_PASS | 6650 MVPP22_XLG_CTRL0_TX_FLOW_CTRL_EN | 6651 MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN, val); 6652 } 6653 } else { 6654 if (!phylink_autoneg_inband(mode)) { 6655 val = MVPP2_GMAC_FORCE_LINK_PASS; 6656 6657 if (speed == SPEED_1000 || speed == SPEED_2500) 6658 val |= MVPP2_GMAC_CONFIG_GMII_SPEED; 6659 else if (speed == SPEED_100) 6660 val |= MVPP2_GMAC_CONFIG_MII_SPEED; 6661 6662 if (duplex == DUPLEX_FULL) 6663 val |= MVPP2_GMAC_CONFIG_FULL_DUPLEX; 6664 6665 mvpp2_modify(port->base + MVPP2_GMAC_AUTONEG_CONFIG, 6666 MVPP2_GMAC_FORCE_LINK_DOWN | 6667 MVPP2_GMAC_FORCE_LINK_PASS | 6668 MVPP2_GMAC_CONFIG_MII_SPEED | 6669 MVPP2_GMAC_CONFIG_GMII_SPEED | 6670 MVPP2_GMAC_CONFIG_FULL_DUPLEX, val); 6671 } 6672 6673 /* We can always update the flow control enable bits; 6674 * these will only be effective if flow control AN 6675 * (MVPP2_GMAC_FLOW_CTRL_AUTONEG) is disabled. 6676 */ 6677 val = 0; 6678 if (tx_pause) 6679 val |= MVPP22_CTRL4_TX_FC_EN; 6680 if (rx_pause) 6681 val |= MVPP22_CTRL4_RX_FC_EN; 6682 6683 mvpp2_modify(port->base + MVPP22_GMAC_CTRL_4_REG, 6684 MVPP22_CTRL4_RX_FC_EN | MVPP22_CTRL4_TX_FC_EN, 6685 val); 6686 } 6687 6688 if (port->priv->global_tx_fc) { 6689 port->tx_fc = tx_pause; 6690 if (tx_pause) 6691 mvpp2_rxq_enable_fc(port); 6692 else 6693 mvpp2_rxq_disable_fc(port); 6694 if (port->priv->percpu_pools) { 6695 for (i = 0; i < port->nrxqs; i++) 6696 mvpp2_bm_pool_update_fc(port, &port->priv->bm_pools[i], tx_pause); 6697 } else { 6698 mvpp2_bm_pool_update_fc(port, port->pool_long, tx_pause); 6699 mvpp2_bm_pool_update_fc(port, port->pool_short, tx_pause); 6700 } 6701 if (port->priv->hw_version == MVPP23) 6702 mvpp23_rx_fifo_fc_en(port->priv, port->id, tx_pause); 6703 } 6704 6705 mvpp2_port_enable(port); 6706 6707 mvpp2_egress_enable(port); 6708 mvpp2_ingress_enable(port); 6709 netif_tx_wake_all_queues(port->dev); 6710 } 6711 6712 static void mvpp2_mac_link_down(struct phylink_config *config, 6713 unsigned int mode, phy_interface_t interface) 6714 { 6715 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6716 u32 val; 6717 6718 if (!phylink_autoneg_inband(mode)) { 6719 if (mvpp2_is_xlg(interface)) { 6720 val = readl(port->base + MVPP22_XLG_CTRL0_REG); 6721 val &= ~MVPP22_XLG_CTRL0_FORCE_LINK_PASS; 6722 val |= MVPP22_XLG_CTRL0_FORCE_LINK_DOWN; 6723 writel(val, port->base + MVPP22_XLG_CTRL0_REG); 6724 } else { 6725 val = readl(port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6726 val &= ~MVPP2_GMAC_FORCE_LINK_PASS; 6727 val |= MVPP2_GMAC_FORCE_LINK_DOWN; 6728 writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG); 6729 } 6730 } 6731 6732 netif_tx_stop_all_queues(port->dev); 6733 mvpp2_egress_disable(port); 6734 mvpp2_ingress_disable(port); 6735 6736 mvpp2_port_disable(port); 6737 } 6738 6739 static void mvpp2_mac_disable_tx_lpi(struct phylink_config *config) 6740 { 6741 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6742 6743 mvpp2_modify(port->base + MVPP2_GMAC_LPI_CTRL1, 6744 MVPP2_GMAC_LPI_CTRL1_REQ_EN, 0); 6745 } 6746 6747 static int mvpp2_mac_enable_tx_lpi(struct phylink_config *config, u32 timer, 6748 bool tx_clk_stop) 6749 { 6750 struct mvpp2_port *port = mvpp2_phylink_to_port(config); 6751 u32 ts, tw, lpi1, status; 6752 6753 status = readl(port->base + MVPP2_GMAC_STATUS0); 6754 if (status & MVPP2_GMAC_STATUS0_GMII_SPEED) { 6755 /* At 1G speeds, the timer resolution are 1us, and 6756 * 802.3 says tw is 16.5us. Round up to 17us. 6757 */ 6758 tw = 17; 6759 ts = timer; 6760 } else { 6761 /* At 100M speeds, the timer resolutions are 10us, and 6762 * 802.3 says tw is 30us. 6763 */ 6764 tw = 3; 6765 ts = DIV_ROUND_UP(timer, 10); 6766 } 6767 6768 if (ts > 255) 6769 ts = 255; 6770 6771 /* Configure ts */ 6772 mvpp2_modify(port->base + MVPP2_GMAC_LPI_CTRL0, 6773 MVPP2_GMAC_LPI_CTRL0_TS_MASK, 6774 FIELD_PREP(MVPP2_GMAC_LPI_CTRL0_TS_MASK, ts)); 6775 6776 lpi1 = readl(port->base + MVPP2_GMAC_LPI_CTRL1); 6777 6778 /* Configure tw */ 6779 lpi1 = u32_replace_bits(lpi1, tw, MVPP2_GMAC_LPI_CTRL1_TW_MASK); 6780 6781 /* Enable LPI generation */ 6782 writel(lpi1 | MVPP2_GMAC_LPI_CTRL1_REQ_EN, 6783 port->base + MVPP2_GMAC_LPI_CTRL1); 6784 6785 return 0; 6786 } 6787 6788 static const struct phylink_mac_ops mvpp2_phylink_ops = { 6789 .mac_select_pcs = mvpp2_select_pcs, 6790 .mac_prepare = mvpp2_mac_prepare, 6791 .mac_config = mvpp2_mac_config, 6792 .mac_finish = mvpp2_mac_finish, 6793 .mac_link_up = mvpp2_mac_link_up, 6794 .mac_link_down = mvpp2_mac_link_down, 6795 .mac_enable_tx_lpi = mvpp2_mac_enable_tx_lpi, 6796 .mac_disable_tx_lpi = mvpp2_mac_disable_tx_lpi, 6797 }; 6798 6799 /* Work-around for ACPI */ 6800 static void mvpp2_acpi_start(struct mvpp2_port *port) 6801 { 6802 /* Phylink isn't used as of now for ACPI, so the MAC has to be 6803 * configured manually when the interface is started. This will 6804 * be removed as soon as the phylink ACPI support lands in. 6805 */ 6806 struct phylink_link_state state = { 6807 .interface = port->phy_interface, 6808 }; 6809 struct phylink_pcs *pcs; 6810 6811 pcs = mvpp2_select_pcs(&port->phylink_config, port->phy_interface); 6812 6813 mvpp2_mac_prepare(&port->phylink_config, MLO_AN_INBAND, 6814 port->phy_interface); 6815 mvpp2_mac_config(&port->phylink_config, MLO_AN_INBAND, &state); 6816 pcs->ops->pcs_config(pcs, PHYLINK_PCS_NEG_INBAND_ENABLED, 6817 port->phy_interface, state.advertising, 6818 false); 6819 mvpp2_mac_finish(&port->phylink_config, MLO_AN_INBAND, 6820 port->phy_interface); 6821 mvpp2_mac_link_up(&port->phylink_config, NULL, 6822 MLO_AN_INBAND, port->phy_interface, 6823 SPEED_UNKNOWN, DUPLEX_UNKNOWN, false, false); 6824 } 6825 6826 /* In order to ensure backward compatibility for ACPI, check if the port 6827 * firmware node comprises the necessary description allowing to use phylink. 6828 */ 6829 static bool mvpp2_use_acpi_compat_mode(struct fwnode_handle *port_fwnode) 6830 { 6831 if (!is_acpi_node(port_fwnode)) 6832 return false; 6833 6834 return (!fwnode_property_present(port_fwnode, "phy-handle") && 6835 !fwnode_property_present(port_fwnode, "managed") && 6836 !fwnode_get_named_child_node(port_fwnode, "fixed-link")); 6837 } 6838 6839 /* Ports initialization */ 6840 static int mvpp2_port_probe(struct platform_device *pdev, 6841 struct fwnode_handle *port_fwnode, 6842 struct mvpp2 *priv) 6843 { 6844 struct phy *comphy = NULL; 6845 struct mvpp2_port *port; 6846 struct mvpp2_port_pcpu *port_pcpu; 6847 struct device_node *port_node = to_of_node(port_fwnode); 6848 netdev_features_t features; 6849 struct net_device *dev; 6850 struct phylink *phylink; 6851 char *mac_from = ""; 6852 unsigned int ntxqs, nrxqs, thread; 6853 unsigned long flags = 0; 6854 bool has_tx_irqs; 6855 u32 id; 6856 int phy_mode; 6857 int err, i; 6858 6859 has_tx_irqs = mvpp2_port_has_irqs(priv, port_node, &flags); 6860 if (!has_tx_irqs && queue_mode == MVPP2_QDIST_MULTI_MODE) { 6861 dev_err(&pdev->dev, 6862 "not enough IRQs to support multi queue mode\n"); 6863 return -EINVAL; 6864 } 6865 6866 ntxqs = MVPP2_MAX_TXQ; 6867 nrxqs = mvpp2_get_nrxqs(priv); 6868 6869 dev = alloc_etherdev_mqs(sizeof(*port), ntxqs, nrxqs); 6870 if (!dev) 6871 return -ENOMEM; 6872 6873 phy_mode = fwnode_get_phy_mode(port_fwnode); 6874 if (phy_mode < 0) { 6875 dev_err(&pdev->dev, "incorrect phy mode\n"); 6876 err = phy_mode; 6877 goto err_free_netdev; 6878 } 6879 6880 /* 6881 * Rewrite 10GBASE-KR to 10GBASE-R for compatibility with existing DT. 6882 * Existing usage of 10GBASE-KR is not correct; no backplane 6883 * negotiation is done, and this driver does not actually support 6884 * 10GBASE-KR. 6885 */ 6886 if (phy_mode == PHY_INTERFACE_MODE_10GKR) 6887 phy_mode = PHY_INTERFACE_MODE_10GBASER; 6888 6889 if (port_node) { 6890 comphy = devm_of_phy_get(&pdev->dev, port_node, NULL); 6891 if (IS_ERR(comphy)) { 6892 if (PTR_ERR(comphy) == -EPROBE_DEFER) { 6893 err = -EPROBE_DEFER; 6894 goto err_free_netdev; 6895 } 6896 comphy = NULL; 6897 } 6898 } 6899 6900 if (fwnode_property_read_u32(port_fwnode, "port-id", &id)) { 6901 err = -EINVAL; 6902 dev_err(&pdev->dev, "missing port-id value\n"); 6903 goto err_free_netdev; 6904 } 6905 6906 dev->tx_queue_len = MVPP2_MAX_TXD_MAX; 6907 dev->watchdog_timeo = 5 * HZ; 6908 dev->netdev_ops = &mvpp2_netdev_ops; 6909 dev->ethtool_ops = &mvpp2_eth_tool_ops; 6910 6911 port = netdev_priv(dev); 6912 port->dev = dev; 6913 port->fwnode = port_fwnode; 6914 port->ntxqs = ntxqs; 6915 port->nrxqs = nrxqs; 6916 port->priv = priv; 6917 port->has_tx_irqs = has_tx_irqs; 6918 port->flags = flags; 6919 6920 err = mvpp2_queue_vectors_init(port, port_node); 6921 if (err) 6922 goto err_free_netdev; 6923 6924 if (port_node) 6925 port->port_irq = of_irq_get_byname(port_node, "link"); 6926 else 6927 port->port_irq = fwnode_irq_get(port_fwnode, port->nqvecs + 1); 6928 if (port->port_irq == -EPROBE_DEFER) { 6929 err = -EPROBE_DEFER; 6930 goto err_deinit_qvecs; 6931 } 6932 if (port->port_irq <= 0) 6933 /* the link irq is optional */ 6934 port->port_irq = 0; 6935 6936 if (fwnode_property_read_bool(port_fwnode, "marvell,loopback")) 6937 port->flags |= MVPP2_F_LOOPBACK; 6938 6939 port->id = id; 6940 if (priv->hw_version == MVPP21) 6941 port->first_rxq = port->id * port->nrxqs; 6942 else 6943 port->first_rxq = port->id * priv->max_port_rxqs; 6944 6945 port->of_node = port_node; 6946 port->phy_interface = phy_mode; 6947 port->comphy = comphy; 6948 6949 if (priv->hw_version == MVPP21) { 6950 port->base = devm_platform_ioremap_resource(pdev, 2 + id); 6951 if (IS_ERR(port->base)) { 6952 err = PTR_ERR(port->base); 6953 goto err_free_irq; 6954 } 6955 6956 port->stats_base = port->priv->lms_base + 6957 MVPP21_MIB_COUNTERS_OFFSET + 6958 port->gop_id * MVPP21_MIB_COUNTERS_PORT_SZ; 6959 } else { 6960 if (fwnode_property_read_u32(port_fwnode, "gop-port-id", 6961 &port->gop_id)) { 6962 err = -EINVAL; 6963 dev_err(&pdev->dev, "missing gop-port-id value\n"); 6964 goto err_deinit_qvecs; 6965 } 6966 6967 port->base = priv->iface_base + MVPP22_GMAC_BASE(port->gop_id); 6968 port->stats_base = port->priv->iface_base + 6969 MVPP22_MIB_COUNTERS_OFFSET + 6970 port->gop_id * MVPP22_MIB_COUNTERS_PORT_SZ; 6971 6972 /* We may want a property to describe whether we should use 6973 * MAC hardware timestamping. 6974 */ 6975 if (priv->tai) 6976 port->hwtstamp = true; 6977 } 6978 6979 /* Alloc per-cpu and ethtool stats */ 6980 port->stats = netdev_alloc_pcpu_stats(struct mvpp2_pcpu_stats); 6981 if (!port->stats) { 6982 err = -ENOMEM; 6983 goto err_free_irq; 6984 } 6985 6986 port->ethtool_stats = devm_kcalloc(&pdev->dev, 6987 MVPP2_N_ETHTOOL_STATS(ntxqs, nrxqs), 6988 sizeof(u64), GFP_KERNEL); 6989 if (!port->ethtool_stats) { 6990 err = -ENOMEM; 6991 goto err_free_stats; 6992 } 6993 6994 mutex_init(&port->gather_stats_lock); 6995 INIT_DELAYED_WORK(&port->stats_work, mvpp2_gather_hw_statistics); 6996 6997 err = mvpp2_port_copy_mac_addr(dev, priv, port_fwnode, &mac_from); 6998 if (err < 0) 6999 goto err_free_stats; 7000 7001 port->tx_ring_size = MVPP2_MAX_TXD_DFLT; 7002 port->rx_ring_size = MVPP2_MAX_RXD_DFLT; 7003 SET_NETDEV_DEV(dev, &pdev->dev); 7004 7005 err = mvpp2_port_init(port); 7006 if (err < 0) { 7007 dev_err(&pdev->dev, "failed to init port %d\n", id); 7008 goto err_free_stats; 7009 } 7010 7011 mvpp2_port_periodic_xon_disable(port); 7012 7013 mvpp2_mac_reset_assert(port); 7014 mvpp22_pcs_reset_assert(port); 7015 7016 port->pcpu = alloc_percpu(struct mvpp2_port_pcpu); 7017 if (!port->pcpu) { 7018 err = -ENOMEM; 7019 goto err_free_txq_pcpu; 7020 } 7021 7022 if (!port->has_tx_irqs) { 7023 for (thread = 0; thread < priv->nthreads; thread++) { 7024 port_pcpu = per_cpu_ptr(port->pcpu, thread); 7025 7026 hrtimer_setup(&port_pcpu->tx_done_timer, mvpp2_hr_timer_cb, CLOCK_MONOTONIC, 7027 HRTIMER_MODE_REL_PINNED_SOFT); 7028 port_pcpu->timer_scheduled = false; 7029 port_pcpu->dev = dev; 7030 } 7031 } 7032 7033 features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 7034 NETIF_F_TSO; 7035 dev->features = features | NETIF_F_RXCSUM; 7036 dev->hw_features |= features | NETIF_F_RXCSUM | NETIF_F_GRO | 7037 NETIF_F_HW_VLAN_CTAG_FILTER; 7038 7039 if (mvpp22_rss_is_supported(port)) { 7040 dev->hw_features |= NETIF_F_RXHASH; 7041 dev->features |= NETIF_F_NTUPLE; 7042 } 7043 7044 if (!port->priv->percpu_pools) 7045 mvpp2_set_hw_csum(port, port->pool_long->id); 7046 else if (port->ntxqs >= num_possible_cpus() * 2) 7047 dev->xdp_features = NETDEV_XDP_ACT_BASIC | 7048 NETDEV_XDP_ACT_REDIRECT | 7049 NETDEV_XDP_ACT_NDO_XMIT; 7050 7051 dev->vlan_features |= features; 7052 netif_set_tso_max_segs(dev, MVPP2_MAX_TSO_SEGS); 7053 7054 dev->priv_flags |= IFF_UNICAST_FLT; 7055 7056 /* MTU range: 68 - 9704 */ 7057 dev->min_mtu = ETH_MIN_MTU; 7058 /* 9704 == 9728 - 20 and rounding to 8 */ 7059 dev->max_mtu = MVPP2_BM_JUMBO_PKT_SIZE; 7060 device_set_node(&dev->dev, port_fwnode); 7061 dev->dev_port = port->id; 7062 7063 port->pcs_gmac.ops = &mvpp2_phylink_gmac_pcs_ops; 7064 port->pcs_xlg.ops = &mvpp2_phylink_xlg_pcs_ops; 7065 7066 if (!mvpp2_use_acpi_compat_mode(port_fwnode)) { 7067 port->phylink_config.dev = &dev->dev; 7068 port->phylink_config.type = PHYLINK_NETDEV; 7069 port->phylink_config.mac_capabilities = 7070 MAC_2500FD | MAC_1000FD | MAC_100 | MAC_10; 7071 7072 __set_bit(PHY_INTERFACE_MODE_SGMII, 7073 port->phylink_config.lpi_interfaces); 7074 7075 port->phylink_config.lpi_capabilities = MAC_1000FD | MAC_100FD; 7076 7077 /* Setup EEE. Choose 250us idle. */ 7078 port->phylink_config.lpi_timer_default = 250; 7079 port->phylink_config.eee_enabled_default = true; 7080 7081 if (port->priv->global_tx_fc) 7082 port->phylink_config.mac_capabilities |= 7083 MAC_SYM_PAUSE | MAC_ASYM_PAUSE; 7084 7085 if (mvpp2_port_supports_xlg(port)) { 7086 /* If a COMPHY is present, we can support any of 7087 * the serdes modes and switch between them. 7088 */ 7089 if (comphy) { 7090 __set_bit(PHY_INTERFACE_MODE_5GBASER, 7091 port->phylink_config.supported_interfaces); 7092 __set_bit(PHY_INTERFACE_MODE_10GBASER, 7093 port->phylink_config.supported_interfaces); 7094 __set_bit(PHY_INTERFACE_MODE_XAUI, 7095 port->phylink_config.supported_interfaces); 7096 } else if (phy_mode == PHY_INTERFACE_MODE_5GBASER) { 7097 __set_bit(PHY_INTERFACE_MODE_5GBASER, 7098 port->phylink_config.supported_interfaces); 7099 } else if (phy_mode == PHY_INTERFACE_MODE_10GBASER) { 7100 __set_bit(PHY_INTERFACE_MODE_10GBASER, 7101 port->phylink_config.supported_interfaces); 7102 } else if (phy_mode == PHY_INTERFACE_MODE_XAUI) { 7103 __set_bit(PHY_INTERFACE_MODE_XAUI, 7104 port->phylink_config.supported_interfaces); 7105 } 7106 7107 if (comphy) 7108 port->phylink_config.mac_capabilities |= 7109 MAC_10000FD | MAC_5000FD; 7110 else if (phy_mode == PHY_INTERFACE_MODE_5GBASER) 7111 port->phylink_config.mac_capabilities |= 7112 MAC_5000FD; 7113 else 7114 port->phylink_config.mac_capabilities |= 7115 MAC_10000FD; 7116 } 7117 7118 if (mvpp2_port_supports_rgmii(port)) { 7119 phy_interface_set_rgmii(port->phylink_config.supported_interfaces); 7120 __set_bit(PHY_INTERFACE_MODE_MII, 7121 port->phylink_config.supported_interfaces); 7122 } 7123 7124 if (comphy) { 7125 /* If a COMPHY is present, we can support any of the 7126 * serdes modes and switch between them. 7127 */ 7128 __set_bit(PHY_INTERFACE_MODE_SGMII, 7129 port->phylink_config.supported_interfaces); 7130 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 7131 port->phylink_config.supported_interfaces); 7132 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 7133 port->phylink_config.supported_interfaces); 7134 } else if (phy_mode == PHY_INTERFACE_MODE_2500BASEX) { 7135 /* No COMPHY, with only 2500BASE-X mode supported */ 7136 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 7137 port->phylink_config.supported_interfaces); 7138 } else if (phy_mode == PHY_INTERFACE_MODE_1000BASEX || 7139 phy_mode == PHY_INTERFACE_MODE_SGMII) { 7140 /* No COMPHY, we can switch between 1000BASE-X and SGMII 7141 */ 7142 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 7143 port->phylink_config.supported_interfaces); 7144 __set_bit(PHY_INTERFACE_MODE_SGMII, 7145 port->phylink_config.supported_interfaces); 7146 } 7147 7148 phylink = phylink_create(&port->phylink_config, port_fwnode, 7149 phy_mode, &mvpp2_phylink_ops); 7150 if (IS_ERR(phylink)) { 7151 err = PTR_ERR(phylink); 7152 goto err_free_port_pcpu; 7153 } 7154 port->phylink = phylink; 7155 7156 mvpp2_mac_disable_tx_lpi(&port->phylink_config); 7157 } else { 7158 dev_warn(&pdev->dev, "Use link irqs for port#%d. FW update required\n", port->id); 7159 port->phylink = NULL; 7160 } 7161 7162 /* Cycle the comphy to power it down, saving 270mW per port - 7163 * don't worry about an error powering it up. When the comphy 7164 * driver does this, we can remove this code. 7165 */ 7166 if (port->comphy) { 7167 err = mvpp22_comphy_init(port, port->phy_interface); 7168 if (err == 0) 7169 phy_power_off(port->comphy); 7170 } 7171 7172 err = register_netdev(dev); 7173 if (err < 0) { 7174 dev_err(&pdev->dev, "failed to register netdev\n"); 7175 goto err_phylink; 7176 } 7177 netdev_info(dev, "Using %s mac address %pM\n", mac_from, dev->dev_addr); 7178 7179 priv->port_list[priv->port_count++] = port; 7180 7181 return 0; 7182 7183 err_phylink: 7184 if (port->phylink) 7185 phylink_destroy(port->phylink); 7186 err_free_port_pcpu: 7187 free_percpu(port->pcpu); 7188 err_free_txq_pcpu: 7189 for (i = 0; i < port->ntxqs; i++) 7190 free_percpu(port->txqs[i]->pcpu); 7191 err_free_stats: 7192 free_percpu(port->stats); 7193 err_free_irq: 7194 if (port->port_irq) 7195 irq_dispose_mapping(port->port_irq); 7196 err_deinit_qvecs: 7197 mvpp2_queue_vectors_deinit(port); 7198 err_free_netdev: 7199 free_netdev(dev); 7200 return err; 7201 } 7202 7203 /* Ports removal routine */ 7204 static void mvpp2_port_remove(struct mvpp2_port *port) 7205 { 7206 int i; 7207 7208 unregister_netdev(port->dev); 7209 if (port->phylink) 7210 phylink_destroy(port->phylink); 7211 free_percpu(port->pcpu); 7212 free_percpu(port->stats); 7213 for (i = 0; i < port->ntxqs; i++) 7214 free_percpu(port->txqs[i]->pcpu); 7215 mvpp2_queue_vectors_deinit(port); 7216 if (port->port_irq) 7217 irq_dispose_mapping(port->port_irq); 7218 free_netdev(port->dev); 7219 } 7220 7221 /* Initialize decoding windows */ 7222 static void mvpp2_conf_mbus_windows(const struct mbus_dram_target_info *dram, 7223 struct mvpp2 *priv) 7224 { 7225 u32 win_enable; 7226 int i; 7227 7228 for (i = 0; i < 6; i++) { 7229 mvpp2_write(priv, MVPP2_WIN_BASE(i), 0); 7230 mvpp2_write(priv, MVPP2_WIN_SIZE(i), 0); 7231 7232 if (i < 4) 7233 mvpp2_write(priv, MVPP2_WIN_REMAP(i), 0); 7234 } 7235 7236 win_enable = 0; 7237 7238 for (i = 0; i < dram->num_cs; i++) { 7239 const struct mbus_dram_window *cs = dram->cs + i; 7240 7241 mvpp2_write(priv, MVPP2_WIN_BASE(i), 7242 (cs->base & 0xffff0000) | (cs->mbus_attr << 8) | 7243 dram->mbus_dram_target_id); 7244 7245 mvpp2_write(priv, MVPP2_WIN_SIZE(i), 7246 (cs->size - 1) & 0xffff0000); 7247 7248 win_enable |= (1 << i); 7249 } 7250 7251 mvpp2_write(priv, MVPP2_BASE_ADDR_ENABLE, win_enable); 7252 } 7253 7254 /* Initialize Rx FIFO's */ 7255 static void mvpp2_rx_fifo_init(struct mvpp2 *priv) 7256 { 7257 int port; 7258 7259 for (port = 0; port < MVPP2_MAX_PORTS; port++) { 7260 mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port), 7261 MVPP2_RX_FIFO_PORT_DATA_SIZE_4KB); 7262 mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port), 7263 MVPP2_RX_FIFO_PORT_ATTR_SIZE_4KB); 7264 } 7265 7266 mvpp2_write(priv, MVPP2_RX_MIN_PKT_SIZE_REG, 7267 MVPP2_RX_FIFO_PORT_MIN_PKT); 7268 mvpp2_write(priv, MVPP2_RX_FIFO_INIT_REG, 0x1); 7269 } 7270 7271 static void mvpp22_rx_fifo_set_hw(struct mvpp2 *priv, int port, int data_size) 7272 { 7273 int attr_size = MVPP2_RX_FIFO_PORT_ATTR_SIZE(data_size); 7274 7275 mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port), data_size); 7276 mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port), attr_size); 7277 } 7278 7279 /* Initialize TX FIFO's: the total FIFO size is 48kB on PPv2.2 and PPv2.3. 7280 * 4kB fixed space must be assigned for the loopback port. 7281 * Redistribute remaining avialable 44kB space among all active ports. 7282 * Guarantee minimum 32kB for 10G port and 8kB for port 1, capable of 2.5G 7283 * SGMII link. 7284 */ 7285 static void mvpp22_rx_fifo_init(struct mvpp2 *priv) 7286 { 7287 int remaining_ports_count; 7288 unsigned long port_map; 7289 int size_remainder; 7290 int port, size; 7291 7292 /* The loopback requires fixed 4kB of the FIFO space assignment. */ 7293 mvpp22_rx_fifo_set_hw(priv, MVPP2_LOOPBACK_PORT_INDEX, 7294 MVPP2_RX_FIFO_PORT_DATA_SIZE_4KB); 7295 port_map = priv->port_map & ~BIT(MVPP2_LOOPBACK_PORT_INDEX); 7296 7297 /* Set RX FIFO size to 0 for inactive ports. */ 7298 for_each_clear_bit(port, &port_map, MVPP2_LOOPBACK_PORT_INDEX) 7299 mvpp22_rx_fifo_set_hw(priv, port, 0); 7300 7301 /* Assign remaining RX FIFO space among all active ports. */ 7302 size_remainder = MVPP2_RX_FIFO_PORT_DATA_SIZE_44KB; 7303 remaining_ports_count = hweight_long(port_map); 7304 7305 for_each_set_bit(port, &port_map, MVPP2_LOOPBACK_PORT_INDEX) { 7306 if (remaining_ports_count == 1) 7307 size = size_remainder; 7308 else if (port == 0) 7309 size = max(size_remainder / remaining_ports_count, 7310 MVPP2_RX_FIFO_PORT_DATA_SIZE_32KB); 7311 else if (port == 1) 7312 size = max(size_remainder / remaining_ports_count, 7313 MVPP2_RX_FIFO_PORT_DATA_SIZE_8KB); 7314 else 7315 size = size_remainder / remaining_ports_count; 7316 7317 size_remainder -= size; 7318 remaining_ports_count--; 7319 7320 mvpp22_rx_fifo_set_hw(priv, port, size); 7321 } 7322 7323 mvpp2_write(priv, MVPP2_RX_MIN_PKT_SIZE_REG, 7324 MVPP2_RX_FIFO_PORT_MIN_PKT); 7325 mvpp2_write(priv, MVPP2_RX_FIFO_INIT_REG, 0x1); 7326 } 7327 7328 /* Configure Rx FIFO Flow control thresholds */ 7329 static void mvpp23_rx_fifo_fc_set_tresh(struct mvpp2 *priv) 7330 { 7331 int port, val; 7332 7333 /* Port 0: maximum speed -10Gb/s port 7334 * required by spec RX FIFO threshold 9KB 7335 * Port 1: maximum speed -5Gb/s port 7336 * required by spec RX FIFO threshold 4KB 7337 * Port 2: maximum speed -1Gb/s port 7338 * required by spec RX FIFO threshold 2KB 7339 */ 7340 7341 /* Without loopback port */ 7342 for (port = 0; port < (MVPP2_MAX_PORTS - 1); port++) { 7343 if (port == 0) { 7344 val = (MVPP23_PORT0_FIFO_TRSH / MVPP2_RX_FC_TRSH_UNIT) 7345 << MVPP2_RX_FC_TRSH_OFFS; 7346 val &= MVPP2_RX_FC_TRSH_MASK; 7347 mvpp2_write(priv, MVPP2_RX_FC_REG(port), val); 7348 } else if (port == 1) { 7349 val = (MVPP23_PORT1_FIFO_TRSH / MVPP2_RX_FC_TRSH_UNIT) 7350 << MVPP2_RX_FC_TRSH_OFFS; 7351 val &= MVPP2_RX_FC_TRSH_MASK; 7352 mvpp2_write(priv, MVPP2_RX_FC_REG(port), val); 7353 } else { 7354 val = (MVPP23_PORT2_FIFO_TRSH / MVPP2_RX_FC_TRSH_UNIT) 7355 << MVPP2_RX_FC_TRSH_OFFS; 7356 val &= MVPP2_RX_FC_TRSH_MASK; 7357 mvpp2_write(priv, MVPP2_RX_FC_REG(port), val); 7358 } 7359 } 7360 } 7361 7362 /* Configure Rx FIFO Flow control thresholds */ 7363 void mvpp23_rx_fifo_fc_en(struct mvpp2 *priv, int port, bool en) 7364 { 7365 int val; 7366 7367 val = mvpp2_read(priv, MVPP2_RX_FC_REG(port)); 7368 7369 if (en) 7370 val |= MVPP2_RX_FC_EN; 7371 else 7372 val &= ~MVPP2_RX_FC_EN; 7373 7374 mvpp2_write(priv, MVPP2_RX_FC_REG(port), val); 7375 } 7376 7377 static void mvpp22_tx_fifo_set_hw(struct mvpp2 *priv, int port, int size) 7378 { 7379 int threshold = MVPP2_TX_FIFO_THRESHOLD(size); 7380 7381 mvpp2_write(priv, MVPP22_TX_FIFO_SIZE_REG(port), size); 7382 mvpp2_write(priv, MVPP22_TX_FIFO_THRESH_REG(port), threshold); 7383 } 7384 7385 /* Initialize TX FIFO's: the total FIFO size is 19kB on PPv2.2 and PPv2.3. 7386 * 1kB fixed space must be assigned for the loopback port. 7387 * Redistribute remaining avialable 18kB space among all active ports. 7388 * The 10G interface should use 10kB (which is maximum possible size 7389 * per single port). 7390 */ 7391 static void mvpp22_tx_fifo_init(struct mvpp2 *priv) 7392 { 7393 int remaining_ports_count; 7394 unsigned long port_map; 7395 int size_remainder; 7396 int port, size; 7397 7398 /* The loopback requires fixed 1kB of the FIFO space assignment. */ 7399 mvpp22_tx_fifo_set_hw(priv, MVPP2_LOOPBACK_PORT_INDEX, 7400 MVPP22_TX_FIFO_DATA_SIZE_1KB); 7401 port_map = priv->port_map & ~BIT(MVPP2_LOOPBACK_PORT_INDEX); 7402 7403 /* Set TX FIFO size to 0 for inactive ports. */ 7404 for_each_clear_bit(port, &port_map, MVPP2_LOOPBACK_PORT_INDEX) 7405 mvpp22_tx_fifo_set_hw(priv, port, 0); 7406 7407 /* Assign remaining TX FIFO space among all active ports. */ 7408 size_remainder = MVPP22_TX_FIFO_DATA_SIZE_18KB; 7409 remaining_ports_count = hweight_long(port_map); 7410 7411 for_each_set_bit(port, &port_map, MVPP2_LOOPBACK_PORT_INDEX) { 7412 if (remaining_ports_count == 1) 7413 size = min(size_remainder, 7414 MVPP22_TX_FIFO_DATA_SIZE_10KB); 7415 else if (port == 0) 7416 size = MVPP22_TX_FIFO_DATA_SIZE_10KB; 7417 else 7418 size = size_remainder / remaining_ports_count; 7419 7420 size_remainder -= size; 7421 remaining_ports_count--; 7422 7423 mvpp22_tx_fifo_set_hw(priv, port, size); 7424 } 7425 } 7426 7427 static void mvpp2_axi_init(struct mvpp2 *priv) 7428 { 7429 u32 val, rdval, wrval; 7430 7431 mvpp2_write(priv, MVPP22_BM_ADDR_HIGH_RLS_REG, 0x0); 7432 7433 /* AXI Bridge Configuration */ 7434 7435 rdval = MVPP22_AXI_CODE_CACHE_RD_CACHE 7436 << MVPP22_AXI_ATTR_CACHE_OFFS; 7437 rdval |= MVPP22_AXI_CODE_DOMAIN_OUTER_DOM 7438 << MVPP22_AXI_ATTR_DOMAIN_OFFS; 7439 7440 wrval = MVPP22_AXI_CODE_CACHE_WR_CACHE 7441 << MVPP22_AXI_ATTR_CACHE_OFFS; 7442 wrval |= MVPP22_AXI_CODE_DOMAIN_OUTER_DOM 7443 << MVPP22_AXI_ATTR_DOMAIN_OFFS; 7444 7445 /* BM */ 7446 mvpp2_write(priv, MVPP22_AXI_BM_WR_ATTR_REG, wrval); 7447 mvpp2_write(priv, MVPP22_AXI_BM_RD_ATTR_REG, rdval); 7448 7449 /* Descriptors */ 7450 mvpp2_write(priv, MVPP22_AXI_AGGRQ_DESCR_RD_ATTR_REG, rdval); 7451 mvpp2_write(priv, MVPP22_AXI_TXQ_DESCR_WR_ATTR_REG, wrval); 7452 mvpp2_write(priv, MVPP22_AXI_TXQ_DESCR_RD_ATTR_REG, rdval); 7453 mvpp2_write(priv, MVPP22_AXI_RXQ_DESCR_WR_ATTR_REG, wrval); 7454 7455 /* Buffer Data */ 7456 mvpp2_write(priv, MVPP22_AXI_TX_DATA_RD_ATTR_REG, rdval); 7457 mvpp2_write(priv, MVPP22_AXI_RX_DATA_WR_ATTR_REG, wrval); 7458 7459 val = MVPP22_AXI_CODE_CACHE_NON_CACHE 7460 << MVPP22_AXI_CODE_CACHE_OFFS; 7461 val |= MVPP22_AXI_CODE_DOMAIN_SYSTEM 7462 << MVPP22_AXI_CODE_DOMAIN_OFFS; 7463 mvpp2_write(priv, MVPP22_AXI_RD_NORMAL_CODE_REG, val); 7464 mvpp2_write(priv, MVPP22_AXI_WR_NORMAL_CODE_REG, val); 7465 7466 val = MVPP22_AXI_CODE_CACHE_RD_CACHE 7467 << MVPP22_AXI_CODE_CACHE_OFFS; 7468 val |= MVPP22_AXI_CODE_DOMAIN_OUTER_DOM 7469 << MVPP22_AXI_CODE_DOMAIN_OFFS; 7470 7471 mvpp2_write(priv, MVPP22_AXI_RD_SNOOP_CODE_REG, val); 7472 7473 val = MVPP22_AXI_CODE_CACHE_WR_CACHE 7474 << MVPP22_AXI_CODE_CACHE_OFFS; 7475 val |= MVPP22_AXI_CODE_DOMAIN_OUTER_DOM 7476 << MVPP22_AXI_CODE_DOMAIN_OFFS; 7477 7478 mvpp2_write(priv, MVPP22_AXI_WR_SNOOP_CODE_REG, val); 7479 } 7480 7481 /* Initialize network controller common part HW */ 7482 static int mvpp2_init(struct platform_device *pdev, struct mvpp2 *priv) 7483 { 7484 const struct mbus_dram_target_info *dram_target_info; 7485 int err, i; 7486 u32 val; 7487 7488 /* MBUS windows configuration */ 7489 dram_target_info = mv_mbus_dram_info(); 7490 if (dram_target_info) 7491 mvpp2_conf_mbus_windows(dram_target_info, priv); 7492 7493 if (priv->hw_version >= MVPP22) 7494 mvpp2_axi_init(priv); 7495 7496 /* Disable HW PHY polling */ 7497 if (priv->hw_version == MVPP21) { 7498 val = readl(priv->lms_base + MVPP2_PHY_AN_CFG0_REG); 7499 val |= MVPP2_PHY_AN_STOP_SMI0_MASK; 7500 writel(val, priv->lms_base + MVPP2_PHY_AN_CFG0_REG); 7501 } else { 7502 val = readl(priv->iface_base + MVPP22_SMI_MISC_CFG_REG); 7503 val &= ~MVPP22_SMI_POLLING_EN; 7504 writel(val, priv->iface_base + MVPP22_SMI_MISC_CFG_REG); 7505 } 7506 7507 /* Allocate and initialize aggregated TXQs */ 7508 priv->aggr_txqs = devm_kcalloc(&pdev->dev, MVPP2_MAX_THREADS, 7509 sizeof(*priv->aggr_txqs), 7510 GFP_KERNEL); 7511 if (!priv->aggr_txqs) 7512 return -ENOMEM; 7513 7514 for (i = 0; i < MVPP2_MAX_THREADS; i++) { 7515 priv->aggr_txqs[i].id = i; 7516 priv->aggr_txqs[i].size = MVPP2_AGGR_TXQ_SIZE; 7517 err = mvpp2_aggr_txq_init(pdev, &priv->aggr_txqs[i], i, priv); 7518 if (err < 0) 7519 return err; 7520 } 7521 7522 /* Fifo Init */ 7523 if (priv->hw_version == MVPP21) { 7524 mvpp2_rx_fifo_init(priv); 7525 } else { 7526 mvpp22_rx_fifo_init(priv); 7527 mvpp22_tx_fifo_init(priv); 7528 if (priv->hw_version == MVPP23) 7529 mvpp23_rx_fifo_fc_set_tresh(priv); 7530 } 7531 7532 if (priv->hw_version == MVPP21) 7533 writel(MVPP2_EXT_GLOBAL_CTRL_DEFAULT, 7534 priv->lms_base + MVPP2_MNG_EXTENDED_GLOBAL_CTRL_REG); 7535 7536 /* Allow cache snoop when transmiting packets */ 7537 mvpp2_write(priv, MVPP2_TX_SNOOP_REG, 0x1); 7538 7539 /* Buffer Manager initialization */ 7540 err = mvpp2_bm_init(&pdev->dev, priv); 7541 if (err < 0) 7542 return err; 7543 7544 /* Parser default initialization */ 7545 err = mvpp2_prs_default_init(pdev, priv); 7546 if (err < 0) 7547 return err; 7548 7549 /* Classifier default initialization */ 7550 mvpp2_cls_init(priv); 7551 7552 return 0; 7553 } 7554 7555 static int mvpp2_get_sram(struct platform_device *pdev, 7556 struct mvpp2 *priv) 7557 { 7558 struct resource *res; 7559 void __iomem *base; 7560 7561 res = platform_get_resource(pdev, IORESOURCE_MEM, 2); 7562 if (!res) { 7563 if (has_acpi_companion(&pdev->dev)) 7564 dev_warn(&pdev->dev, "ACPI is too old, Flow control not supported\n"); 7565 else 7566 dev_warn(&pdev->dev, "DT is too old, Flow control not supported\n"); 7567 return 0; 7568 } 7569 7570 base = devm_ioremap_resource(&pdev->dev, res); 7571 if (IS_ERR(base)) 7572 return PTR_ERR(base); 7573 7574 priv->cm3_base = base; 7575 return 0; 7576 } 7577 7578 static int mvpp2_probe(struct platform_device *pdev) 7579 { 7580 struct mvpp2 *priv; 7581 struct resource *res; 7582 void __iomem *base; 7583 int i, shared; 7584 int err; 7585 7586 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 7587 if (!priv) 7588 return -ENOMEM; 7589 7590 priv->hw_version = (unsigned long)device_get_match_data(&pdev->dev); 7591 7592 /* multi queue mode isn't supported on PPV2.1, fallback to single 7593 * mode 7594 */ 7595 if (priv->hw_version == MVPP21) 7596 queue_mode = MVPP2_QDIST_SINGLE_MODE; 7597 7598 base = devm_platform_ioremap_resource(pdev, 0); 7599 if (IS_ERR(base)) 7600 return PTR_ERR(base); 7601 7602 if (priv->hw_version == MVPP21) { 7603 priv->lms_base = devm_platform_ioremap_resource(pdev, 1); 7604 if (IS_ERR(priv->lms_base)) 7605 return PTR_ERR(priv->lms_base); 7606 } else { 7607 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 7608 if (!res) { 7609 dev_err(&pdev->dev, "Invalid resource\n"); 7610 return -EINVAL; 7611 } 7612 if (has_acpi_companion(&pdev->dev)) { 7613 /* In case the MDIO memory region is declared in 7614 * the ACPI, it can already appear as 'in-use' 7615 * in the OS. Because it is overlapped by second 7616 * region of the network controller, make 7617 * sure it is released, before requesting it again. 7618 * The care is taken by mvpp2 driver to avoid 7619 * concurrent access to this memory region. 7620 */ 7621 release_resource(res); 7622 } 7623 priv->iface_base = devm_ioremap_resource(&pdev->dev, res); 7624 if (IS_ERR(priv->iface_base)) 7625 return PTR_ERR(priv->iface_base); 7626 7627 /* Map CM3 SRAM */ 7628 err = mvpp2_get_sram(pdev, priv); 7629 if (err) 7630 dev_warn(&pdev->dev, "Fail to alloc CM3 SRAM\n"); 7631 7632 /* Enable global Flow Control only if handler to SRAM not NULL */ 7633 if (priv->cm3_base) 7634 priv->global_tx_fc = true; 7635 } 7636 7637 if (priv->hw_version >= MVPP22 && dev_of_node(&pdev->dev)) { 7638 priv->sysctrl_base = 7639 syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 7640 "marvell,system-controller"); 7641 if (IS_ERR(priv->sysctrl_base)) 7642 /* The system controller regmap is optional for dt 7643 * compatibility reasons. When not provided, the 7644 * configuration of the GoP relies on the 7645 * firmware/bootloader. 7646 */ 7647 priv->sysctrl_base = NULL; 7648 } 7649 7650 if (priv->hw_version >= MVPP22 && 7651 mvpp2_get_nrxqs(priv) * 2 <= MVPP2_BM_MAX_POOLS) 7652 priv->percpu_pools = 1; 7653 7654 mvpp2_setup_bm_pool(); 7655 7656 7657 priv->nthreads = min_t(unsigned int, num_present_cpus(), 7658 MVPP2_MAX_THREADS); 7659 7660 shared = num_present_cpus() - priv->nthreads; 7661 if (shared > 0) 7662 bitmap_set(&priv->lock_map, 0, 7663 min_t(int, shared, MVPP2_MAX_THREADS)); 7664 7665 for (i = 0; i < MVPP2_MAX_THREADS; i++) { 7666 u32 addr_space_sz; 7667 7668 addr_space_sz = (priv->hw_version == MVPP21 ? 7669 MVPP21_ADDR_SPACE_SZ : MVPP22_ADDR_SPACE_SZ); 7670 priv->swth_base[i] = base + i * addr_space_sz; 7671 } 7672 7673 if (priv->hw_version == MVPP21) 7674 priv->max_port_rxqs = 8; 7675 else 7676 priv->max_port_rxqs = 32; 7677 7678 if (dev_of_node(&pdev->dev)) { 7679 priv->pp_clk = devm_clk_get(&pdev->dev, "pp_clk"); 7680 if (IS_ERR(priv->pp_clk)) 7681 return PTR_ERR(priv->pp_clk); 7682 err = clk_prepare_enable(priv->pp_clk); 7683 if (err < 0) 7684 return err; 7685 7686 priv->gop_clk = devm_clk_get(&pdev->dev, "gop_clk"); 7687 if (IS_ERR(priv->gop_clk)) { 7688 err = PTR_ERR(priv->gop_clk); 7689 goto err_pp_clk; 7690 } 7691 err = clk_prepare_enable(priv->gop_clk); 7692 if (err < 0) 7693 goto err_pp_clk; 7694 7695 if (priv->hw_version >= MVPP22) { 7696 priv->mg_clk = devm_clk_get(&pdev->dev, "mg_clk"); 7697 if (IS_ERR(priv->mg_clk)) { 7698 err = PTR_ERR(priv->mg_clk); 7699 goto err_gop_clk; 7700 } 7701 7702 err = clk_prepare_enable(priv->mg_clk); 7703 if (err < 0) 7704 goto err_gop_clk; 7705 7706 priv->mg_core_clk = devm_clk_get_optional(&pdev->dev, "mg_core_clk"); 7707 if (IS_ERR(priv->mg_core_clk)) { 7708 err = PTR_ERR(priv->mg_core_clk); 7709 goto err_mg_clk; 7710 } 7711 7712 err = clk_prepare_enable(priv->mg_core_clk); 7713 if (err < 0) 7714 goto err_mg_clk; 7715 } 7716 7717 priv->axi_clk = devm_clk_get_optional(&pdev->dev, "axi_clk"); 7718 if (IS_ERR(priv->axi_clk)) { 7719 err = PTR_ERR(priv->axi_clk); 7720 goto err_mg_core_clk; 7721 } 7722 7723 err = clk_prepare_enable(priv->axi_clk); 7724 if (err < 0) 7725 goto err_mg_core_clk; 7726 7727 /* Get system's tclk rate */ 7728 priv->tclk = clk_get_rate(priv->pp_clk); 7729 } else { 7730 err = device_property_read_u32(&pdev->dev, "clock-frequency", &priv->tclk); 7731 if (err) { 7732 dev_err(&pdev->dev, "missing clock-frequency value\n"); 7733 return err; 7734 } 7735 } 7736 7737 if (priv->hw_version >= MVPP22) { 7738 err = dma_set_mask(&pdev->dev, MVPP2_DESC_DMA_MASK); 7739 if (err) 7740 goto err_axi_clk; 7741 /* Sadly, the BM pools all share the same register to 7742 * store the high 32 bits of their address. So they 7743 * must all have the same high 32 bits, which forces 7744 * us to restrict coherent memory to DMA_BIT_MASK(32). 7745 */ 7746 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 7747 if (err) 7748 goto err_axi_clk; 7749 } 7750 7751 /* Map DTS-active ports. Should be done before FIFO mvpp2_init */ 7752 device_for_each_child_node_scoped(&pdev->dev, port_fwnode) { 7753 if (!fwnode_property_read_u32(port_fwnode, "port-id", &i)) 7754 priv->port_map |= BIT(i); 7755 } 7756 7757 if (mvpp2_read(priv, MVPP2_VER_ID_REG) == MVPP2_VER_PP23) 7758 priv->hw_version = MVPP23; 7759 7760 /* Init locks for shared packet processor resources */ 7761 spin_lock_init(&priv->mss_spinlock); 7762 spin_lock_init(&priv->prs_spinlock); 7763 7764 /* Initialize network controller */ 7765 err = mvpp2_init(pdev, priv); 7766 if (err < 0) { 7767 dev_err(&pdev->dev, "failed to initialize controller\n"); 7768 goto err_axi_clk; 7769 } 7770 7771 err = mvpp22_tai_probe(&pdev->dev, priv); 7772 if (err < 0) 7773 goto err_axi_clk; 7774 7775 /* Initialize ports */ 7776 device_for_each_child_node_scoped(&pdev->dev, port_fwnode) { 7777 err = mvpp2_port_probe(pdev, port_fwnode, priv); 7778 if (err < 0) 7779 goto err_port_probe; 7780 } 7781 7782 if (priv->port_count == 0) { 7783 dev_err(&pdev->dev, "no ports enabled\n"); 7784 err = -ENODEV; 7785 goto err_axi_clk; 7786 } 7787 7788 /* Statistics must be gathered regularly because some of them (like 7789 * packets counters) are 32-bit registers and could overflow quite 7790 * quickly. For instance, a 10Gb link used at full bandwidth with the 7791 * smallest packets (64B) will overflow a 32-bit counter in less than 7792 * 30 seconds. Then, use a workqueue to fill 64-bit counters. 7793 */ 7794 snprintf(priv->queue_name, sizeof(priv->queue_name), 7795 "stats-wq-%s%s", netdev_name(priv->port_list[0]->dev), 7796 priv->port_count > 1 ? "+" : ""); 7797 priv->stats_queue = create_singlethread_workqueue(priv->queue_name); 7798 if (!priv->stats_queue) { 7799 err = -ENOMEM; 7800 goto err_port_probe; 7801 } 7802 7803 if (priv->global_tx_fc && priv->hw_version >= MVPP22) { 7804 err = mvpp2_enable_global_fc(priv); 7805 if (err) 7806 dev_warn(&pdev->dev, "Minimum of CM3 firmware 18.09 and chip revision B0 required for flow control\n"); 7807 } 7808 7809 mvpp2_dbgfs_init(priv, pdev->name); 7810 7811 platform_set_drvdata(pdev, priv); 7812 return 0; 7813 7814 err_port_probe: 7815 for (i = 0; i < priv->port_count; i++) 7816 mvpp2_port_remove(priv->port_list[i]); 7817 err_axi_clk: 7818 clk_disable_unprepare(priv->axi_clk); 7819 err_mg_core_clk: 7820 clk_disable_unprepare(priv->mg_core_clk); 7821 err_mg_clk: 7822 clk_disable_unprepare(priv->mg_clk); 7823 err_gop_clk: 7824 clk_disable_unprepare(priv->gop_clk); 7825 err_pp_clk: 7826 clk_disable_unprepare(priv->pp_clk); 7827 return err; 7828 } 7829 7830 static void mvpp2_remove(struct platform_device *pdev) 7831 { 7832 struct mvpp2 *priv = platform_get_drvdata(pdev); 7833 int i, poolnum = MVPP2_BM_POOLS_NUM; 7834 7835 mvpp2_dbgfs_cleanup(priv); 7836 7837 for (i = 0; i < priv->port_count; i++) { 7838 mutex_destroy(&priv->port_list[i]->gather_stats_lock); 7839 mvpp2_port_remove(priv->port_list[i]); 7840 } 7841 7842 destroy_workqueue(priv->stats_queue); 7843 7844 if (priv->percpu_pools) 7845 poolnum = mvpp2_get_nrxqs(priv) * 2; 7846 7847 for (i = 0; i < poolnum; i++) { 7848 struct mvpp2_bm_pool *bm_pool = &priv->bm_pools[i]; 7849 7850 mvpp2_bm_pool_destroy(&pdev->dev, priv, bm_pool); 7851 } 7852 7853 for (i = 0; i < MVPP2_MAX_THREADS; i++) { 7854 struct mvpp2_tx_queue *aggr_txq = &priv->aggr_txqs[i]; 7855 7856 dma_free_coherent(&pdev->dev, 7857 MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE, 7858 aggr_txq->descs, 7859 aggr_txq->descs_dma); 7860 } 7861 7862 if (!dev_of_node(&pdev->dev)) 7863 return; 7864 7865 clk_disable_unprepare(priv->axi_clk); 7866 clk_disable_unprepare(priv->mg_core_clk); 7867 clk_disable_unprepare(priv->mg_clk); 7868 clk_disable_unprepare(priv->pp_clk); 7869 clk_disable_unprepare(priv->gop_clk); 7870 } 7871 7872 static const struct of_device_id mvpp2_match[] = { 7873 { 7874 .compatible = "marvell,armada-375-pp2", 7875 .data = (void *)MVPP21, 7876 }, 7877 { 7878 .compatible = "marvell,armada-7k-pp22", 7879 .data = (void *)MVPP22, 7880 }, 7881 { } 7882 }; 7883 MODULE_DEVICE_TABLE(of, mvpp2_match); 7884 7885 #ifdef CONFIG_ACPI 7886 static const struct acpi_device_id mvpp2_acpi_match[] = { 7887 { "MRVL0110", MVPP22 }, 7888 { }, 7889 }; 7890 MODULE_DEVICE_TABLE(acpi, mvpp2_acpi_match); 7891 #endif 7892 7893 static struct platform_driver mvpp2_driver = { 7894 .probe = mvpp2_probe, 7895 .remove = mvpp2_remove, 7896 .driver = { 7897 .name = MVPP2_DRIVER_NAME, 7898 .of_match_table = mvpp2_match, 7899 .acpi_match_table = ACPI_PTR(mvpp2_acpi_match), 7900 }, 7901 }; 7902 7903 static int __init mvpp2_driver_init(void) 7904 { 7905 return platform_driver_register(&mvpp2_driver); 7906 } 7907 module_init(mvpp2_driver_init); 7908 7909 static void __exit mvpp2_driver_exit(void) 7910 { 7911 platform_driver_unregister(&mvpp2_driver); 7912 mvpp2_dbgfs_exit(); 7913 } 7914 module_exit(mvpp2_driver_exit); 7915 7916 MODULE_DESCRIPTION("Marvell PPv2 Ethernet Driver - www.marvell.com"); 7917 MODULE_AUTHOR("Marcin Wojtas <mw@semihalf.com>"); 7918 MODULE_LICENSE("GPL v2"); 7919