1 /* 2 * (C) Copyright 2011 Michal Simek 3 * 4 * Michal SIMEK <monstr@monstr.eu> 5 * 6 * Based on Xilinx gmac driver: 7 * (C) Copyright 2011 Xilinx 8 * 9 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #include <common.h> 13 #include <net.h> 14 #include <netdev.h> 15 #include <config.h> 16 #include <fdtdec.h> 17 #include <libfdt.h> 18 #include <malloc.h> 19 #include <asm/io.h> 20 #include <phy.h> 21 #include <miiphy.h> 22 #include <watchdog.h> 23 #include <asm/system.h> 24 #include <asm/arch/hardware.h> 25 #include <asm/arch/sys_proto.h> 26 #include <asm-generic/errno.h> 27 28 #if !defined(CONFIG_PHYLIB) 29 # error XILINX_GEM_ETHERNET requires PHYLIB 30 #endif 31 32 /* Bit/mask specification */ 33 #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */ 34 #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */ 35 #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */ 36 #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */ 37 #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */ 38 39 #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */ 40 #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */ 41 #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */ 42 43 #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */ 44 #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */ 45 #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */ 46 47 /* Wrap bit, last descriptor */ 48 #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000 49 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */ 50 #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */ 51 52 #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */ 53 #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */ 54 #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */ 55 #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */ 56 57 #define ZYNQ_GEM_NWCFG_SPEED100 0x000000001 /* 100 Mbps operation */ 58 #define ZYNQ_GEM_NWCFG_SPEED1000 0x000000400 /* 1Gbps operation */ 59 #define ZYNQ_GEM_NWCFG_FDEN 0x000000002 /* Full Duplex mode */ 60 #define ZYNQ_GEM_NWCFG_FSREM 0x000020000 /* FCS removal */ 61 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x0000c0000 /* Div pclk by 48, max 120MHz */ 62 63 #ifdef CONFIG_ARM64 64 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */ 65 #else 66 # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */ 67 #endif 68 69 #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \ 70 ZYNQ_GEM_NWCFG_FDEN | \ 71 ZYNQ_GEM_NWCFG_FSREM | \ 72 ZYNQ_GEM_NWCFG_MDCCLKDIV) 73 74 #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */ 75 76 #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */ 77 /* Use full configured addressable space (8 Kb) */ 78 #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300 79 /* Use full configured addressable space (4 Kb) */ 80 #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400 81 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */ 82 #define ZYNQ_GEM_DMACR_RXBUF 0x00180000 83 84 #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \ 85 ZYNQ_GEM_DMACR_RXSIZE | \ 86 ZYNQ_GEM_DMACR_TXSIZE | \ 87 ZYNQ_GEM_DMACR_RXBUF) 88 89 #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */ 90 91 /* Use MII register 1 (MII status register) to detect PHY */ 92 #define PHY_DETECT_REG 1 93 94 /* Mask used to verify certain PHY features (or register contents) 95 * in the register above: 96 * 0x1000: 10Mbps full duplex support 97 * 0x0800: 10Mbps half duplex support 98 * 0x0008: Auto-negotiation support 99 */ 100 #define PHY_DETECT_MASK 0x1808 101 102 /* TX BD status masks */ 103 #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff 104 #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000 105 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000 106 107 /* Clock frequencies for different speeds */ 108 #define ZYNQ_GEM_FREQUENCY_10 2500000UL 109 #define ZYNQ_GEM_FREQUENCY_100 25000000UL 110 #define ZYNQ_GEM_FREQUENCY_1000 125000000UL 111 112 /* Device registers */ 113 struct zynq_gem_regs { 114 u32 nwctrl; /* 0x0 - Network Control reg */ 115 u32 nwcfg; /* 0x4 - Network Config reg */ 116 u32 nwsr; /* 0x8 - Network Status reg */ 117 u32 reserved1; 118 u32 dmacr; /* 0x10 - DMA Control reg */ 119 u32 txsr; /* 0x14 - TX Status reg */ 120 u32 rxqbase; /* 0x18 - RX Q Base address reg */ 121 u32 txqbase; /* 0x1c - TX Q Base address reg */ 122 u32 rxsr; /* 0x20 - RX Status reg */ 123 u32 reserved2[2]; 124 u32 idr; /* 0x2c - Interrupt Disable reg */ 125 u32 reserved3; 126 u32 phymntnc; /* 0x34 - Phy Maintaince reg */ 127 u32 reserved4[18]; 128 u32 hashl; /* 0x80 - Hash Low address reg */ 129 u32 hashh; /* 0x84 - Hash High address reg */ 130 #define LADDR_LOW 0 131 #define LADDR_HIGH 1 132 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */ 133 u32 match[4]; /* 0xa8 - Type ID1 Match reg */ 134 u32 reserved6[18]; 135 #define STAT_SIZE 44 136 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */ 137 u32 reserved7[164]; 138 u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */ 139 u32 reserved8[15]; 140 u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */ 141 }; 142 143 /* BD descriptors */ 144 struct emac_bd { 145 u32 addr; /* Next descriptor pointer */ 146 u32 status; 147 }; 148 149 #define RX_BUF 32 150 /* Page table entries are set to 1MB, or multiples of 1MB 151 * (not < 1MB). driver uses less bd's so use 1MB bdspace. 152 */ 153 #define BD_SPACE 0x100000 154 /* BD separation space */ 155 #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd)) 156 157 /* Setup the first free TX descriptor */ 158 #define TX_FREE_DESC 2 159 160 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */ 161 struct zynq_gem_priv { 162 struct emac_bd *tx_bd; 163 struct emac_bd *rx_bd; 164 char *rxbuffers; 165 u32 rxbd_current; 166 u32 rx_first_buf; 167 int phyaddr; 168 u32 emio; 169 int init; 170 phy_interface_t interface; 171 struct phy_device *phydev; 172 struct mii_dev *bus; 173 }; 174 175 static inline int mdio_wait(struct eth_device *dev) 176 { 177 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 178 u32 timeout = 20000; 179 180 /* Wait till MDIO interface is ready to accept a new transaction. */ 181 while (--timeout) { 182 if (readl(®s->nwsr) & ZYNQ_GEM_NWSR_MDIOIDLE_MASK) 183 break; 184 WATCHDOG_RESET(); 185 } 186 187 if (!timeout) { 188 printf("%s: Timeout\n", __func__); 189 return 1; 190 } 191 192 return 0; 193 } 194 195 static u32 phy_setup_op(struct eth_device *dev, u32 phy_addr, u32 regnum, 196 u32 op, u16 *data) 197 { 198 u32 mgtcr; 199 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 200 201 if (mdio_wait(dev)) 202 return 1; 203 204 /* Construct mgtcr mask for the operation */ 205 mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op | 206 (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) | 207 (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data; 208 209 /* Write mgtcr and wait for completion */ 210 writel(mgtcr, ®s->phymntnc); 211 212 if (mdio_wait(dev)) 213 return 1; 214 215 if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK) 216 *data = readl(®s->phymntnc); 217 218 return 0; 219 } 220 221 static u32 phyread(struct eth_device *dev, u32 phy_addr, u32 regnum, u16 *val) 222 { 223 u32 ret; 224 225 ret = phy_setup_op(dev, phy_addr, regnum, 226 ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val); 227 228 if (!ret) 229 debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__, 230 phy_addr, regnum, *val); 231 232 return ret; 233 } 234 235 static u32 phywrite(struct eth_device *dev, u32 phy_addr, u32 regnum, u16 data) 236 { 237 debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr, 238 regnum, data); 239 240 return phy_setup_op(dev, phy_addr, regnum, 241 ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data); 242 } 243 244 static int phy_detection(struct eth_device *dev) 245 { 246 int i; 247 u16 phyreg; 248 struct zynq_gem_priv *priv = dev->priv; 249 250 if (priv->phyaddr != -1) { 251 phyread(dev, priv->phyaddr, PHY_DETECT_REG, &phyreg); 252 if ((phyreg != 0xFFFF) && 253 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { 254 /* Found a valid PHY address */ 255 debug("Default phy address %d is valid\n", 256 priv->phyaddr); 257 return 0; 258 } else { 259 debug("PHY address is not setup correctly %d\n", 260 priv->phyaddr); 261 priv->phyaddr = -1; 262 } 263 } 264 265 debug("detecting phy address\n"); 266 if (priv->phyaddr == -1) { 267 /* detect the PHY address */ 268 for (i = 31; i >= 0; i--) { 269 phyread(dev, i, PHY_DETECT_REG, &phyreg); 270 if ((phyreg != 0xFFFF) && 271 ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { 272 /* Found a valid PHY address */ 273 priv->phyaddr = i; 274 debug("Found valid phy address, %d\n", i); 275 return 0; 276 } 277 } 278 } 279 printf("PHY is not detected\n"); 280 return -1; 281 } 282 283 static int zynq_gem_setup_mac(struct eth_device *dev) 284 { 285 u32 i, macaddrlow, macaddrhigh; 286 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 287 288 /* Set the MAC bits [31:0] in BOT */ 289 macaddrlow = dev->enetaddr[0]; 290 macaddrlow |= dev->enetaddr[1] << 8; 291 macaddrlow |= dev->enetaddr[2] << 16; 292 macaddrlow |= dev->enetaddr[3] << 24; 293 294 /* Set MAC bits [47:32] in TOP */ 295 macaddrhigh = dev->enetaddr[4]; 296 macaddrhigh |= dev->enetaddr[5] << 8; 297 298 for (i = 0; i < 4; i++) { 299 writel(0, ®s->laddr[i][LADDR_LOW]); 300 writel(0, ®s->laddr[i][LADDR_HIGH]); 301 /* Do not use MATCHx register */ 302 writel(0, ®s->match[i]); 303 } 304 305 writel(macaddrlow, ®s->laddr[0][LADDR_LOW]); 306 writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]); 307 308 return 0; 309 } 310 311 static int zynq_gem_init(struct eth_device *dev, bd_t * bis) 312 { 313 u32 i; 314 int ret; 315 unsigned long clk_rate = 0; 316 struct phy_device *phydev; 317 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 318 struct zynq_gem_priv *priv = dev->priv; 319 struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC]; 320 struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2]; 321 const u32 supported = SUPPORTED_10baseT_Half | 322 SUPPORTED_10baseT_Full | 323 SUPPORTED_100baseT_Half | 324 SUPPORTED_100baseT_Full | 325 SUPPORTED_1000baseT_Half | 326 SUPPORTED_1000baseT_Full; 327 328 if (!priv->init) { 329 /* Disable all interrupts */ 330 writel(0xFFFFFFFF, ®s->idr); 331 332 /* Disable the receiver & transmitter */ 333 writel(0, ®s->nwctrl); 334 writel(0, ®s->txsr); 335 writel(0, ®s->rxsr); 336 writel(0, ®s->phymntnc); 337 338 /* Clear the Hash registers for the mac address 339 * pointed by AddressPtr 340 */ 341 writel(0x0, ®s->hashl); 342 /* Write bits [63:32] in TOP */ 343 writel(0x0, ®s->hashh); 344 345 /* Clear all counters */ 346 for (i = 0; i < STAT_SIZE; i++) 347 readl(®s->stat[i]); 348 349 /* Setup RxBD space */ 350 memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd)); 351 352 for (i = 0; i < RX_BUF; i++) { 353 priv->rx_bd[i].status = 0xF0000000; 354 priv->rx_bd[i].addr = 355 ((ulong)(priv->rxbuffers) + 356 (i * PKTSIZE_ALIGN)); 357 } 358 /* WRAP bit to last BD */ 359 priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK; 360 /* Write RxBDs to IP */ 361 writel((ulong)priv->rx_bd, ®s->rxqbase); 362 363 /* Setup for DMA Configuration register */ 364 writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr); 365 366 /* Setup for Network Control register, MDIO, Rx and Tx enable */ 367 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK); 368 369 /* Disable the second priority queue */ 370 dummy_tx_bd->addr = 0; 371 dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | 372 ZYNQ_GEM_TXBUF_LAST_MASK| 373 ZYNQ_GEM_TXBUF_USED_MASK; 374 375 dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK | 376 ZYNQ_GEM_RXBUF_NEW_MASK; 377 dummy_rx_bd->status = 0; 378 flush_dcache_range((ulong)&dummy_tx_bd, (ulong)&dummy_tx_bd + 379 sizeof(dummy_tx_bd)); 380 flush_dcache_range((ulong)&dummy_rx_bd, (ulong)&dummy_rx_bd + 381 sizeof(dummy_rx_bd)); 382 383 writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr); 384 writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr); 385 386 priv->init++; 387 } 388 389 ret = phy_detection(dev); 390 if (ret) { 391 printf("GEM PHY init failed\n"); 392 return ret; 393 } 394 395 /* interface - look at tsec */ 396 phydev = phy_connect(priv->bus, priv->phyaddr, dev, 397 priv->interface); 398 399 phydev->supported = supported | ADVERTISED_Pause | 400 ADVERTISED_Asym_Pause; 401 phydev->advertising = phydev->supported; 402 priv->phydev = phydev; 403 phy_config(phydev); 404 phy_startup(phydev); 405 406 if (!phydev->link) { 407 printf("%s: No link.\n", phydev->dev->name); 408 return -1; 409 } 410 411 switch (phydev->speed) { 412 case SPEED_1000: 413 writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED1000, 414 ®s->nwcfg); 415 clk_rate = ZYNQ_GEM_FREQUENCY_1000; 416 break; 417 case SPEED_100: 418 writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED100, 419 ®s->nwcfg); 420 clk_rate = ZYNQ_GEM_FREQUENCY_100; 421 break; 422 case SPEED_10: 423 clk_rate = ZYNQ_GEM_FREQUENCY_10; 424 break; 425 } 426 427 /* Change the rclk and clk only not using EMIO interface */ 428 if (!priv->emio) 429 zynq_slcr_gem_clk_setup(dev->iobase != 430 ZYNQ_GEM_BASEADDR0, clk_rate); 431 432 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | 433 ZYNQ_GEM_NWCTRL_TXEN_MASK); 434 435 return 0; 436 } 437 438 static int wait_for_bit(const char *func, u32 *reg, const u32 mask, 439 bool set, unsigned int timeout) 440 { 441 u32 val; 442 unsigned long start = get_timer(0); 443 444 while (1) { 445 val = readl(reg); 446 447 if (!set) 448 val = ~val; 449 450 if ((val & mask) == mask) 451 return 0; 452 453 if (get_timer(start) > timeout) 454 break; 455 456 udelay(1); 457 } 458 459 debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n", 460 func, reg, mask, set); 461 462 return -ETIMEDOUT; 463 } 464 465 static int zynq_gem_send(struct eth_device *dev, void *ptr, int len) 466 { 467 u32 addr, size; 468 struct zynq_gem_priv *priv = dev->priv; 469 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 470 struct emac_bd *current_bd = &priv->tx_bd[1]; 471 472 /* Setup Tx BD */ 473 memset(priv->tx_bd, 0, sizeof(struct emac_bd)); 474 475 priv->tx_bd->addr = (ulong)ptr; 476 priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) | 477 ZYNQ_GEM_TXBUF_LAST_MASK; 478 /* Dummy descriptor to mark it as the last in descriptor chain */ 479 current_bd->addr = 0x0; 480 current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | 481 ZYNQ_GEM_TXBUF_LAST_MASK| 482 ZYNQ_GEM_TXBUF_USED_MASK; 483 484 /* setup BD */ 485 writel((ulong)priv->tx_bd, ®s->txqbase); 486 487 addr = (ulong) ptr; 488 addr &= ~(ARCH_DMA_MINALIGN - 1); 489 size = roundup(len, ARCH_DMA_MINALIGN); 490 flush_dcache_range(addr, addr + size); 491 492 addr = (ulong)priv->rxbuffers; 493 addr &= ~(ARCH_DMA_MINALIGN - 1); 494 size = roundup((RX_BUF * PKTSIZE_ALIGN), ARCH_DMA_MINALIGN); 495 flush_dcache_range(addr, addr + size); 496 barrier(); 497 498 /* Start transmit */ 499 setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK); 500 501 /* Read TX BD status */ 502 if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED) 503 printf("TX buffers exhausted in mid frame\n"); 504 505 return wait_for_bit(__func__, ®s->txsr, ZYNQ_GEM_TSR_DONE, 506 true, 20000); 507 } 508 509 /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */ 510 static int zynq_gem_recv(struct eth_device *dev) 511 { 512 int frame_len; 513 struct zynq_gem_priv *priv = dev->priv; 514 struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current]; 515 struct emac_bd *first_bd; 516 517 if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK)) 518 return 0; 519 520 if (!(current_bd->status & 521 (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) { 522 printf("GEM: SOF or EOF not set for last buffer received!\n"); 523 return 0; 524 } 525 526 frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK; 527 if (frame_len) { 528 u32 addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; 529 addr &= ~(ARCH_DMA_MINALIGN - 1); 530 531 net_process_received_packet((u8 *)(ulong)addr, frame_len); 532 533 if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) 534 priv->rx_first_buf = priv->rxbd_current; 535 else { 536 current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; 537 current_bd->status = 0xF0000000; /* FIXME */ 538 } 539 540 if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) { 541 first_bd = &priv->rx_bd[priv->rx_first_buf]; 542 first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; 543 first_bd->status = 0xF0000000; 544 } 545 546 if ((++priv->rxbd_current) >= RX_BUF) 547 priv->rxbd_current = 0; 548 } 549 550 return frame_len; 551 } 552 553 static void zynq_gem_halt(struct eth_device *dev) 554 { 555 struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; 556 557 clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | 558 ZYNQ_GEM_NWCTRL_TXEN_MASK, 0); 559 } 560 561 static int zynq_gem_miiphyread(const char *devname, uchar addr, 562 uchar reg, ushort *val) 563 { 564 struct eth_device *dev = eth_get_dev(); 565 int ret; 566 567 ret = phyread(dev, addr, reg, val); 568 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, *val); 569 return ret; 570 } 571 572 static int zynq_gem_miiphy_write(const char *devname, uchar addr, 573 uchar reg, ushort val) 574 { 575 struct eth_device *dev = eth_get_dev(); 576 577 debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val); 578 return phywrite(dev, addr, reg, val); 579 } 580 581 int zynq_gem_initialize(bd_t *bis, phys_addr_t base_addr, 582 int phy_addr, u32 emio) 583 { 584 struct eth_device *dev; 585 struct zynq_gem_priv *priv; 586 void *bd_space; 587 588 dev = calloc(1, sizeof(*dev)); 589 if (dev == NULL) 590 return -1; 591 592 dev->priv = calloc(1, sizeof(struct zynq_gem_priv)); 593 if (dev->priv == NULL) { 594 free(dev); 595 return -1; 596 } 597 priv = dev->priv; 598 599 /* Align rxbuffers to ARCH_DMA_MINALIGN */ 600 priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN); 601 memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN); 602 603 /* Align bd_space to MMU_SECTION_SHIFT */ 604 bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE); 605 mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, 606 BD_SPACE, DCACHE_OFF); 607 608 /* Initialize the bd spaces for tx and rx bd's */ 609 priv->tx_bd = (struct emac_bd *)bd_space; 610 priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE); 611 612 priv->phyaddr = phy_addr; 613 priv->emio = emio; 614 615 #ifndef CONFIG_ZYNQ_GEM_INTERFACE 616 priv->interface = PHY_INTERFACE_MODE_MII; 617 #else 618 priv->interface = CONFIG_ZYNQ_GEM_INTERFACE; 619 #endif 620 621 sprintf(dev->name, "Gem.%lx", base_addr); 622 623 dev->iobase = base_addr; 624 625 dev->init = zynq_gem_init; 626 dev->halt = zynq_gem_halt; 627 dev->send = zynq_gem_send; 628 dev->recv = zynq_gem_recv; 629 dev->write_hwaddr = zynq_gem_setup_mac; 630 631 eth_register(dev); 632 633 miiphy_register(dev->name, zynq_gem_miiphyread, zynq_gem_miiphy_write); 634 priv->bus = miiphy_get_dev_by_name(dev->name); 635 636 return 1; 637 } 638 639 #if CONFIG_IS_ENABLED(OF_CONTROL) 640 int zynq_gem_of_init(const void *blob) 641 { 642 int offset = 0; 643 u32 ret = 0; 644 u32 reg, phy_reg; 645 646 debug("ZYNQ GEM: Initialization\n"); 647 648 do { 649 offset = fdt_node_offset_by_compatible(blob, offset, 650 "xlnx,ps7-ethernet-1.00.a"); 651 if (offset != -1) { 652 reg = fdtdec_get_addr(blob, offset, "reg"); 653 if (reg != FDT_ADDR_T_NONE) { 654 offset = fdtdec_lookup_phandle(blob, offset, 655 "phy-handle"); 656 if (offset != -1) 657 phy_reg = fdtdec_get_addr(blob, offset, 658 "reg"); 659 else 660 phy_reg = 0; 661 662 debug("ZYNQ GEM: addr %x, phyaddr %x\n", 663 reg, phy_reg); 664 665 ret |= zynq_gem_initialize(NULL, reg, 666 phy_reg, 0); 667 668 } else { 669 debug("ZYNQ GEM: Can't get base address\n"); 670 return -1; 671 } 672 } 673 } while (offset != -1); 674 675 return ret; 676 } 677 #endif 678