1 /* 2 * rtl8169.c : U-Boot driver for the RealTek RTL8169 3 * 4 * Masami Komiya (mkomiya@sonare.it) 5 * 6 * Most part is taken from r8169.c of etherboot 7 * 8 */ 9 10 /************************************************************************** 11 * r8169.c: Etherboot device driver for the RealTek RTL-8169 Gigabit 12 * Written 2003 by Timothy Legge <tlegge@rogers.com> 13 * 14 * SPDX-License-Identifier: GPL-2.0+ 15 * 16 * Portions of this code based on: 17 * r8169.c: A RealTek RTL-8169 Gigabit Ethernet driver 18 * for Linux kernel 2.4.x. 19 * 20 * Written 2002 ShuChen <shuchen@realtek.com.tw> 21 * See Linux Driver for full information 22 * 23 * Linux Driver Version 1.27a, 10.02.2002 24 * 25 * Thanks to: 26 * Jean Chen of RealTek Semiconductor Corp. for 27 * providing the evaluation NIC used to develop 28 * this driver. RealTek's support for Etherboot 29 * is appreciated. 30 * 31 * REVISION HISTORY: 32 * ================ 33 * 34 * v1.0 11-26-2003 timlegge Initial port of Linux driver 35 * v1.5 01-17-2004 timlegge Initial driver output cleanup 36 * 37 * Indent Options: indent -kr -i8 38 ***************************************************************************/ 39 /* 40 * 26 August 2006 Mihai Georgian <u-boot@linuxnotincluded.org.uk> 41 * Modified to use le32_to_cpu and cpu_to_le32 properly 42 */ 43 #include <common.h> 44 #include <dm.h> 45 #include <errno.h> 46 #include <malloc.h> 47 #include <memalign.h> 48 #include <net.h> 49 #ifndef CONFIG_DM_ETH 50 #include <netdev.h> 51 #endif 52 #include <asm/io.h> 53 #include <pci.h> 54 55 #undef DEBUG_RTL8169 56 #undef DEBUG_RTL8169_TX 57 #undef DEBUG_RTL8169_RX 58 59 #define drv_version "v1.5" 60 #define drv_date "01-17-2004" 61 62 static unsigned long ioaddr; 63 64 /* Condensed operations for readability. */ 65 #define currticks() get_timer(0) 66 67 /* media options */ 68 #define MAX_UNITS 8 69 static int media[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; 70 71 /* MAC address length*/ 72 #define MAC_ADDR_LEN 6 73 74 /* max supported gigabit ethernet frame size -- must be at least (dev->mtu+14+4).*/ 75 #define MAX_ETH_FRAME_SIZE 1536 76 77 #define TX_FIFO_THRESH 256 /* In bytes */ 78 79 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */ 80 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ 81 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ 82 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */ 83 #define RxPacketMaxSize 0x0800 /* Maximum size supported is 16K-1 */ 84 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */ 85 86 #define NUM_TX_DESC 1 /* Number of Tx descriptor registers */ 87 #ifdef CONFIG_SYS_RX_ETH_BUFFER 88 #define NUM_RX_DESC CONFIG_SYS_RX_ETH_BUFFER 89 #else 90 #define NUM_RX_DESC 4 /* Number of Rx descriptor registers */ 91 #endif 92 #define RX_BUF_SIZE 1536 /* Rx Buffer size */ 93 #define RX_BUF_LEN 8192 94 95 #define RTL_MIN_IO_SIZE 0x80 96 #define TX_TIMEOUT (6*HZ) 97 98 /* write/read MMIO register. Notice: {read,write}[wl] do the necessary swapping */ 99 #define RTL_W8(reg, val8) writeb((val8), ioaddr + (reg)) 100 #define RTL_W16(reg, val16) writew((val16), ioaddr + (reg)) 101 #define RTL_W32(reg, val32) writel((val32), ioaddr + (reg)) 102 #define RTL_R8(reg) readb(ioaddr + (reg)) 103 #define RTL_R16(reg) readw(ioaddr + (reg)) 104 #define RTL_R32(reg) readl(ioaddr + (reg)) 105 106 #define ETH_FRAME_LEN MAX_ETH_FRAME_SIZE 107 #define ETH_ALEN MAC_ADDR_LEN 108 #define ETH_ZLEN 60 109 110 #define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)(unsigned long)dev->priv, \ 111 (pci_addr_t)(unsigned long)a) 112 #define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)(unsigned long)dev->priv, \ 113 (phys_addr_t)a) 114 115 enum RTL8169_registers { 116 MAC0 = 0, /* Ethernet hardware address. */ 117 MAR0 = 8, /* Multicast filter. */ 118 TxDescStartAddrLow = 0x20, 119 TxDescStartAddrHigh = 0x24, 120 TxHDescStartAddrLow = 0x28, 121 TxHDescStartAddrHigh = 0x2c, 122 FLASH = 0x30, 123 ERSR = 0x36, 124 ChipCmd = 0x37, 125 TxPoll = 0x38, 126 IntrMask = 0x3C, 127 IntrStatus = 0x3E, 128 TxConfig = 0x40, 129 RxConfig = 0x44, 130 RxMissed = 0x4C, 131 Cfg9346 = 0x50, 132 Config0 = 0x51, 133 Config1 = 0x52, 134 Config2 = 0x53, 135 Config3 = 0x54, 136 Config4 = 0x55, 137 Config5 = 0x56, 138 MultiIntr = 0x5C, 139 PHYAR = 0x60, 140 TBICSR = 0x64, 141 TBI_ANAR = 0x68, 142 TBI_LPAR = 0x6A, 143 PHYstatus = 0x6C, 144 RxMaxSize = 0xDA, 145 CPlusCmd = 0xE0, 146 RxDescStartAddrLow = 0xE4, 147 RxDescStartAddrHigh = 0xE8, 148 EarlyTxThres = 0xEC, 149 FuncEvent = 0xF0, 150 FuncEventMask = 0xF4, 151 FuncPresetState = 0xF8, 152 FuncForceEvent = 0xFC, 153 }; 154 155 enum RTL8169_register_content { 156 /*InterruptStatusBits */ 157 SYSErr = 0x8000, 158 PCSTimeout = 0x4000, 159 SWInt = 0x0100, 160 TxDescUnavail = 0x80, 161 RxFIFOOver = 0x40, 162 RxUnderrun = 0x20, 163 RxOverflow = 0x10, 164 TxErr = 0x08, 165 TxOK = 0x04, 166 RxErr = 0x02, 167 RxOK = 0x01, 168 169 /*RxStatusDesc */ 170 RxRES = 0x00200000, 171 RxCRC = 0x00080000, 172 RxRUNT = 0x00100000, 173 RxRWT = 0x00400000, 174 175 /*ChipCmdBits */ 176 CmdReset = 0x10, 177 CmdRxEnb = 0x08, 178 CmdTxEnb = 0x04, 179 RxBufEmpty = 0x01, 180 181 /*Cfg9346Bits */ 182 Cfg9346_Lock = 0x00, 183 Cfg9346_Unlock = 0xC0, 184 185 /*rx_mode_bits */ 186 AcceptErr = 0x20, 187 AcceptRunt = 0x10, 188 AcceptBroadcast = 0x08, 189 AcceptMulticast = 0x04, 190 AcceptMyPhys = 0x02, 191 AcceptAllPhys = 0x01, 192 193 /*RxConfigBits */ 194 RxCfgFIFOShift = 13, 195 RxCfgDMAShift = 8, 196 197 /*TxConfigBits */ 198 TxInterFrameGapShift = 24, 199 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */ 200 201 /*rtl8169_PHYstatus */ 202 TBI_Enable = 0x80, 203 TxFlowCtrl = 0x40, 204 RxFlowCtrl = 0x20, 205 _1000bpsF = 0x10, 206 _100bps = 0x08, 207 _10bps = 0x04, 208 LinkStatus = 0x02, 209 FullDup = 0x01, 210 211 /*GIGABIT_PHY_registers */ 212 PHY_CTRL_REG = 0, 213 PHY_STAT_REG = 1, 214 PHY_AUTO_NEGO_REG = 4, 215 PHY_1000_CTRL_REG = 9, 216 217 /*GIGABIT_PHY_REG_BIT */ 218 PHY_Restart_Auto_Nego = 0x0200, 219 PHY_Enable_Auto_Nego = 0x1000, 220 221 /* PHY_STAT_REG = 1; */ 222 PHY_Auto_Nego_Comp = 0x0020, 223 224 /* PHY_AUTO_NEGO_REG = 4; */ 225 PHY_Cap_10_Half = 0x0020, 226 PHY_Cap_10_Full = 0x0040, 227 PHY_Cap_100_Half = 0x0080, 228 PHY_Cap_100_Full = 0x0100, 229 230 /* PHY_1000_CTRL_REG = 9; */ 231 PHY_Cap_1000_Full = 0x0200, 232 233 PHY_Cap_Null = 0x0, 234 235 /*_MediaType*/ 236 _10_Half = 0x01, 237 _10_Full = 0x02, 238 _100_Half = 0x04, 239 _100_Full = 0x08, 240 _1000_Full = 0x10, 241 242 /*_TBICSRBit*/ 243 TBILinkOK = 0x02000000, 244 }; 245 246 static struct { 247 const char *name; 248 u8 version; /* depend on RTL8169 docs */ 249 u32 RxConfigMask; /* should clear the bits supported by this chip */ 250 } rtl_chip_info[] = { 251 {"RTL-8169", 0x00, 0xff7e1880,}, 252 {"RTL-8169", 0x04, 0xff7e1880,}, 253 {"RTL-8169", 0x00, 0xff7e1880,}, 254 {"RTL-8169s/8110s", 0x02, 0xff7e1880,}, 255 {"RTL-8169s/8110s", 0x04, 0xff7e1880,}, 256 {"RTL-8169sb/8110sb", 0x10, 0xff7e1880,}, 257 {"RTL-8169sc/8110sc", 0x18, 0xff7e1880,}, 258 {"RTL-8168b/8111sb", 0x30, 0xff7e1880,}, 259 {"RTL-8168b/8111sb", 0x38, 0xff7e1880,}, 260 {"RTL-8168d/8111d", 0x28, 0xff7e1880,}, 261 {"RTL-8168evl/8111evl", 0x2e, 0xff7e1880,}, 262 {"RTL-8168/8111g", 0x4c, 0xff7e1880,}, 263 {"RTL-8101e", 0x34, 0xff7e1880,}, 264 {"RTL-8100e", 0x32, 0xff7e1880,}, 265 }; 266 267 enum _DescStatusBit { 268 OWNbit = 0x80000000, 269 EORbit = 0x40000000, 270 FSbit = 0x20000000, 271 LSbit = 0x10000000, 272 }; 273 274 struct TxDesc { 275 u32 status; 276 u32 vlan_tag; 277 u32 buf_addr; 278 u32 buf_Haddr; 279 }; 280 281 struct RxDesc { 282 u32 status; 283 u32 vlan_tag; 284 u32 buf_addr; 285 u32 buf_Haddr; 286 }; 287 288 static unsigned char rxdata[RX_BUF_LEN]; 289 290 #define RTL8169_DESC_SIZE 16 291 292 #if ARCH_DMA_MINALIGN > 256 293 # define RTL8169_ALIGN ARCH_DMA_MINALIGN 294 #else 295 # define RTL8169_ALIGN 256 296 #endif 297 298 /* 299 * Warn if the cache-line size is larger than the descriptor size. In such 300 * cases the driver will likely fail because the CPU needs to flush the cache 301 * when requeuing RX buffers, therefore descriptors written by the hardware 302 * may be discarded. 303 * 304 * This can be fixed by defining CONFIG_SYS_NONCACHED_MEMORY which will cause 305 * the driver to allocate descriptors from a pool of non-cached memory. 306 */ 307 #if RTL8169_DESC_SIZE < ARCH_DMA_MINALIGN 308 #if !defined(CONFIG_SYS_NONCACHED_MEMORY) && \ 309 !defined(CONFIG_SYS_DCACHE_OFF) && !defined(CONFIG_X86) 310 #warning cache-line size is larger than descriptor size 311 #endif 312 #endif 313 314 /* 315 * Create a static buffer of size RX_BUF_SZ for each TX Descriptor. All 316 * descriptors point to a part of this buffer. 317 */ 318 DEFINE_ALIGN_BUFFER(u8, txb, NUM_TX_DESC * RX_BUF_SIZE, RTL8169_ALIGN); 319 320 /* 321 * Create a static buffer of size RX_BUF_SZ for each RX Descriptor. All 322 * descriptors point to a part of this buffer. 323 */ 324 DEFINE_ALIGN_BUFFER(u8, rxb, NUM_RX_DESC * RX_BUF_SIZE, RTL8169_ALIGN); 325 326 struct rtl8169_private { 327 ulong iobase; 328 void *mmio_addr; /* memory map physical address */ 329 int chipset; 330 unsigned long cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */ 331 unsigned long cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */ 332 unsigned long dirty_tx; 333 struct TxDesc *TxDescArray; /* Index of 256-alignment Tx Descriptor buffer */ 334 struct RxDesc *RxDescArray; /* Index of 256-alignment Rx Descriptor buffer */ 335 unsigned char *RxBufferRings; /* Index of Rx Buffer */ 336 unsigned char *RxBufferRing[NUM_RX_DESC]; /* Index of Rx Buffer array */ 337 unsigned char *Tx_skbuff[NUM_TX_DESC]; 338 } tpx; 339 340 static struct rtl8169_private *tpc; 341 342 static const u16 rtl8169_intr_mask = 343 SYSErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver | TxErr | 344 TxOK | RxErr | RxOK; 345 static const unsigned int rtl8169_rx_config = 346 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift); 347 348 static struct pci_device_id supported[] = { 349 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167) }, 350 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168) }, 351 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169) }, 352 {} 353 }; 354 355 void mdio_write(int RegAddr, int value) 356 { 357 int i; 358 359 RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value); 360 udelay(1000); 361 362 for (i = 2000; i > 0; i--) { 363 /* Check if the RTL8169 has completed writing to the specified MII register */ 364 if (!(RTL_R32(PHYAR) & 0x80000000)) { 365 break; 366 } else { 367 udelay(100); 368 } 369 } 370 } 371 372 int mdio_read(int RegAddr) 373 { 374 int i, value = -1; 375 376 RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16); 377 udelay(1000); 378 379 for (i = 2000; i > 0; i--) { 380 /* Check if the RTL8169 has completed retrieving data from the specified MII register */ 381 if (RTL_R32(PHYAR) & 0x80000000) { 382 value = (int) (RTL_R32(PHYAR) & 0xFFFF); 383 break; 384 } else { 385 udelay(100); 386 } 387 } 388 return value; 389 } 390 391 static int rtl8169_init_board(unsigned long dev_iobase, const char *name) 392 { 393 int i; 394 u32 tmp; 395 396 #ifdef DEBUG_RTL8169 397 printf ("%s\n", __FUNCTION__); 398 #endif 399 ioaddr = dev_iobase; 400 401 /* Soft reset the chip. */ 402 RTL_W8(ChipCmd, CmdReset); 403 404 /* Check that the chip has finished the reset. */ 405 for (i = 1000; i > 0; i--) 406 if ((RTL_R8(ChipCmd) & CmdReset) == 0) 407 break; 408 else 409 udelay(10); 410 411 /* identify chip attached to board */ 412 tmp = RTL_R32(TxConfig); 413 tmp = ((tmp & 0x7c000000) + ((tmp & 0x00800000) << 2)) >> 24; 414 415 for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--){ 416 if (tmp == rtl_chip_info[i].version) { 417 tpc->chipset = i; 418 goto match; 419 } 420 } 421 422 /* if unknown chip, assume array element #0, original RTL-8169 in this case */ 423 printf("PCI device %s: unknown chip version, assuming RTL-8169\n", 424 name); 425 printf("PCI device: TxConfig = 0x%lX\n", (unsigned long) RTL_R32(TxConfig)); 426 tpc->chipset = 0; 427 428 match: 429 return 0; 430 } 431 432 /* 433 * TX and RX descriptors are 16 bytes. This causes problems with the cache 434 * maintenance on CPUs where the cache-line size exceeds the size of these 435 * descriptors. What will happen is that when the driver receives a packet 436 * it will be immediately requeued for the hardware to reuse. The CPU will 437 * therefore need to flush the cache-line containing the descriptor, which 438 * will cause all other descriptors in the same cache-line to be flushed 439 * along with it. If one of those descriptors had been written to by the 440 * device those changes (and the associated packet) will be lost. 441 * 442 * To work around this, we make use of non-cached memory if available. If 443 * descriptors are mapped uncached there's no need to manually flush them 444 * or invalidate them. 445 * 446 * Note that this only applies to descriptors. The packet data buffers do 447 * not have the same constraints since they are 1536 bytes large, so they 448 * are unlikely to share cache-lines. 449 */ 450 static void *rtl_alloc_descs(unsigned int num) 451 { 452 size_t size = num * RTL8169_DESC_SIZE; 453 454 #ifdef CONFIG_SYS_NONCACHED_MEMORY 455 return (void *)noncached_alloc(size, RTL8169_ALIGN); 456 #else 457 return memalign(RTL8169_ALIGN, size); 458 #endif 459 } 460 461 /* 462 * Cache maintenance functions. These are simple wrappers around the more 463 * general purpose flush_cache() and invalidate_dcache_range() functions. 464 */ 465 466 static void rtl_inval_rx_desc(struct RxDesc *desc) 467 { 468 #ifndef CONFIG_SYS_NONCACHED_MEMORY 469 unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1); 470 unsigned long end = ALIGN(start + sizeof(*desc), ARCH_DMA_MINALIGN); 471 472 invalidate_dcache_range(start, end); 473 #endif 474 } 475 476 static void rtl_flush_rx_desc(struct RxDesc *desc) 477 { 478 #ifndef CONFIG_SYS_NONCACHED_MEMORY 479 flush_cache((unsigned long)desc, sizeof(*desc)); 480 #endif 481 } 482 483 static void rtl_inval_tx_desc(struct TxDesc *desc) 484 { 485 #ifndef CONFIG_SYS_NONCACHED_MEMORY 486 unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1); 487 unsigned long end = ALIGN(start + sizeof(*desc), ARCH_DMA_MINALIGN); 488 489 invalidate_dcache_range(start, end); 490 #endif 491 } 492 493 static void rtl_flush_tx_desc(struct TxDesc *desc) 494 { 495 #ifndef CONFIG_SYS_NONCACHED_MEMORY 496 flush_cache((unsigned long)desc, sizeof(*desc)); 497 #endif 498 } 499 500 static void rtl_inval_buffer(void *buf, size_t size) 501 { 502 unsigned long start = (unsigned long)buf & ~(ARCH_DMA_MINALIGN - 1); 503 unsigned long end = ALIGN(start + size, ARCH_DMA_MINALIGN); 504 505 invalidate_dcache_range(start, end); 506 } 507 508 static void rtl_flush_buffer(void *buf, size_t size) 509 { 510 flush_cache((unsigned long)buf, size); 511 } 512 513 /************************************************************************** 514 RECV - Receive a frame 515 ***************************************************************************/ 516 #ifdef CONFIG_DM_ETH 517 static int rtl_recv_common(struct udevice *dev, unsigned long dev_iobase, 518 uchar **packetp) 519 #else 520 static int rtl_recv_common(pci_dev_t dev, unsigned long dev_iobase, 521 uchar **packetp) 522 #endif 523 { 524 /* return true if there's an ethernet packet ready to read */ 525 /* nic->packet should contain data on return */ 526 /* nic->packetlen should contain length of data */ 527 int cur_rx; 528 int length = 0; 529 530 #ifdef DEBUG_RTL8169_RX 531 printf ("%s\n", __FUNCTION__); 532 #endif 533 ioaddr = dev_iobase; 534 535 cur_rx = tpc->cur_rx; 536 537 rtl_inval_rx_desc(&tpc->RxDescArray[cur_rx]); 538 539 if ((le32_to_cpu(tpc->RxDescArray[cur_rx].status) & OWNbit) == 0) { 540 if (!(le32_to_cpu(tpc->RxDescArray[cur_rx].status) & RxRES)) { 541 length = (int) (le32_to_cpu(tpc->RxDescArray[cur_rx]. 542 status) & 0x00001FFF) - 4; 543 544 rtl_inval_buffer(tpc->RxBufferRing[cur_rx], length); 545 memcpy(rxdata, tpc->RxBufferRing[cur_rx], length); 546 547 if (cur_rx == NUM_RX_DESC - 1) 548 tpc->RxDescArray[cur_rx].status = 549 cpu_to_le32((OWNbit | EORbit) + RX_BUF_SIZE); 550 else 551 tpc->RxDescArray[cur_rx].status = 552 cpu_to_le32(OWNbit + RX_BUF_SIZE); 553 #ifdef CONFIG_DM_ETH 554 tpc->RxDescArray[cur_rx].buf_addr = cpu_to_le32( 555 dm_pci_mem_to_phys(dev, 556 (pci_addr_t)(unsigned long) 557 tpc->RxBufferRing[cur_rx])); 558 #else 559 tpc->RxDescArray[cur_rx].buf_addr = cpu_to_le32( 560 pci_mem_to_phys(dev, (pci_addr_t)(unsigned long) 561 tpc->RxBufferRing[cur_rx])); 562 #endif 563 rtl_flush_rx_desc(&tpc->RxDescArray[cur_rx]); 564 #ifdef CONFIG_DM_ETH 565 *packetp = rxdata; 566 #else 567 net_process_received_packet(rxdata, length); 568 #endif 569 } else { 570 puts("Error Rx"); 571 length = -EIO; 572 } 573 cur_rx = (cur_rx + 1) % NUM_RX_DESC; 574 tpc->cur_rx = cur_rx; 575 return length; 576 577 } else { 578 ushort sts = RTL_R8(IntrStatus); 579 RTL_W8(IntrStatus, sts & ~(TxErr | RxErr | SYSErr)); 580 udelay(100); /* wait */ 581 } 582 tpc->cur_rx = cur_rx; 583 return (0); /* initially as this is called to flush the input */ 584 } 585 586 #ifdef CONFIG_DM_ETH 587 int rtl8169_eth_recv(struct udevice *dev, int flags, uchar **packetp) 588 { 589 struct rtl8169_private *priv = dev_get_priv(dev); 590 591 return rtl_recv_common(dev, priv->iobase, packetp); 592 } 593 #else 594 static int rtl_recv(struct eth_device *dev) 595 { 596 return rtl_recv_common((pci_dev_t)(unsigned long)dev->priv, 597 dev->iobase, NULL); 598 } 599 #endif /* nCONFIG_DM_ETH */ 600 601 #define HZ 1000 602 /************************************************************************** 603 SEND - Transmit a frame 604 ***************************************************************************/ 605 #ifdef CONFIG_DM_ETH 606 static int rtl_send_common(struct udevice *dev, unsigned long dev_iobase, 607 void *packet, int length) 608 #else 609 static int rtl_send_common(pci_dev_t dev, unsigned long dev_iobase, 610 void *packet, int length) 611 #endif 612 { 613 /* send the packet to destination */ 614 615 u32 to; 616 u8 *ptxb; 617 int entry = tpc->cur_tx % NUM_TX_DESC; 618 u32 len = length; 619 int ret; 620 621 #ifdef DEBUG_RTL8169_TX 622 int stime = currticks(); 623 printf ("%s\n", __FUNCTION__); 624 printf("sending %d bytes\n", len); 625 #endif 626 627 ioaddr = dev_iobase; 628 629 /* point to the current txb incase multiple tx_rings are used */ 630 ptxb = tpc->Tx_skbuff[entry * MAX_ETH_FRAME_SIZE]; 631 memcpy(ptxb, (char *)packet, (int)length); 632 633 while (len < ETH_ZLEN) 634 ptxb[len++] = '\0'; 635 636 rtl_flush_buffer(ptxb, ALIGN(len, RTL8169_ALIGN)); 637 638 tpc->TxDescArray[entry].buf_Haddr = 0; 639 #ifdef CONFIG_DM_ETH 640 tpc->TxDescArray[entry].buf_addr = cpu_to_le32( 641 dm_pci_mem_to_phys(dev, (pci_addr_t)(unsigned long)ptxb)); 642 #else 643 tpc->TxDescArray[entry].buf_addr = cpu_to_le32( 644 pci_mem_to_phys(dev, (pci_addr_t)(unsigned long)ptxb)); 645 #endif 646 if (entry != (NUM_TX_DESC - 1)) { 647 tpc->TxDescArray[entry].status = 648 cpu_to_le32((OWNbit | FSbit | LSbit) | 649 ((len > ETH_ZLEN) ? len : ETH_ZLEN)); 650 } else { 651 tpc->TxDescArray[entry].status = 652 cpu_to_le32((OWNbit | EORbit | FSbit | LSbit) | 653 ((len > ETH_ZLEN) ? len : ETH_ZLEN)); 654 } 655 rtl_flush_tx_desc(&tpc->TxDescArray[entry]); 656 RTL_W8(TxPoll, 0x40); /* set polling bit */ 657 658 tpc->cur_tx++; 659 to = currticks() + TX_TIMEOUT; 660 do { 661 rtl_inval_tx_desc(&tpc->TxDescArray[entry]); 662 } while ((le32_to_cpu(tpc->TxDescArray[entry].status) & OWNbit) 663 && (currticks() < to)); /* wait */ 664 665 if (currticks() >= to) { 666 #ifdef DEBUG_RTL8169_TX 667 puts("tx timeout/error\n"); 668 printf("%s elapsed time : %lu\n", __func__, currticks()-stime); 669 #endif 670 ret = -ETIMEDOUT; 671 } else { 672 #ifdef DEBUG_RTL8169_TX 673 puts("tx done\n"); 674 #endif 675 ret = 0; 676 } 677 /* Delay to make net console (nc) work properly */ 678 udelay(20); 679 return ret; 680 } 681 682 #ifdef CONFIG_DM_ETH 683 int rtl8169_eth_send(struct udevice *dev, void *packet, int length) 684 { 685 struct rtl8169_private *priv = dev_get_priv(dev); 686 687 return rtl_send_common(dev, priv->iobase, packet, length); 688 } 689 690 #else 691 static int rtl_send(struct eth_device *dev, void *packet, int length) 692 { 693 return rtl_send_common((pci_dev_t)(unsigned long)dev->priv, 694 dev->iobase, packet, length); 695 } 696 #endif 697 698 static void rtl8169_set_rx_mode(void) 699 { 700 u32 mc_filter[2]; /* Multicast hash filter */ 701 int rx_mode; 702 u32 tmp = 0; 703 704 #ifdef DEBUG_RTL8169 705 printf ("%s\n", __FUNCTION__); 706 #endif 707 708 /* IFF_ALLMULTI */ 709 /* Too many to filter perfectly -- accept all multicasts. */ 710 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; 711 mc_filter[1] = mc_filter[0] = 0xffffffff; 712 713 tmp = rtl8169_rx_config | rx_mode | (RTL_R32(RxConfig) & 714 rtl_chip_info[tpc->chipset].RxConfigMask); 715 716 RTL_W32(RxConfig, tmp); 717 RTL_W32(MAR0 + 0, mc_filter[0]); 718 RTL_W32(MAR0 + 4, mc_filter[1]); 719 } 720 721 #ifdef CONFIG_DM_ETH 722 static void rtl8169_hw_start(struct udevice *dev) 723 #else 724 static void rtl8169_hw_start(pci_dev_t dev) 725 #endif 726 { 727 u32 i; 728 729 #ifdef DEBUG_RTL8169 730 int stime = currticks(); 731 printf ("%s\n", __FUNCTION__); 732 #endif 733 734 #if 0 735 /* Soft reset the chip. */ 736 RTL_W8(ChipCmd, CmdReset); 737 738 /* Check that the chip has finished the reset. */ 739 for (i = 1000; i > 0; i--) { 740 if ((RTL_R8(ChipCmd) & CmdReset) == 0) 741 break; 742 else 743 udelay(10); 744 } 745 #endif 746 747 RTL_W8(Cfg9346, Cfg9346_Unlock); 748 749 /* RTL-8169sb/8110sb or previous version */ 750 if (tpc->chipset <= 5) 751 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb); 752 753 RTL_W8(EarlyTxThres, EarlyTxThld); 754 755 /* For gigabit rtl8169 */ 756 RTL_W16(RxMaxSize, RxPacketMaxSize); 757 758 /* Set Rx Config register */ 759 i = rtl8169_rx_config | (RTL_R32(RxConfig) & 760 rtl_chip_info[tpc->chipset].RxConfigMask); 761 RTL_W32(RxConfig, i); 762 763 /* Set DMA burst size and Interframe Gap Time */ 764 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) | 765 (InterFrameGap << TxInterFrameGapShift)); 766 767 768 tpc->cur_rx = 0; 769 770 #ifdef CONFIG_DM_ETH 771 RTL_W32(TxDescStartAddrLow, dm_pci_mem_to_phys(dev, 772 (pci_addr_t)(unsigned long)tpc->TxDescArray)); 773 #else 774 RTL_W32(TxDescStartAddrLow, pci_mem_to_phys(dev, 775 (pci_addr_t)(unsigned long)tpc->TxDescArray)); 776 #endif 777 RTL_W32(TxDescStartAddrHigh, (unsigned long)0); 778 #ifdef CONFIG_DM_ETH 779 RTL_W32(RxDescStartAddrLow, dm_pci_mem_to_phys( 780 dev, (pci_addr_t)(unsigned long)tpc->RxDescArray)); 781 #else 782 RTL_W32(RxDescStartAddrLow, pci_mem_to_phys( 783 dev, (pci_addr_t)(unsigned long)tpc->RxDescArray)); 784 #endif 785 RTL_W32(RxDescStartAddrHigh, (unsigned long)0); 786 787 /* RTL-8169sc/8110sc or later version */ 788 if (tpc->chipset > 5) 789 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb); 790 791 RTL_W8(Cfg9346, Cfg9346_Lock); 792 udelay(10); 793 794 RTL_W32(RxMissed, 0); 795 796 rtl8169_set_rx_mode(); 797 798 /* no early-rx interrupts */ 799 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000); 800 801 #ifdef DEBUG_RTL8169 802 printf("%s elapsed time : %lu\n", __func__, currticks()-stime); 803 #endif 804 } 805 806 #ifdef CONFIG_DM_ETH 807 static void rtl8169_init_ring(struct udevice *dev) 808 #else 809 static void rtl8169_init_ring(pci_dev_t dev) 810 #endif 811 { 812 int i; 813 814 #ifdef DEBUG_RTL8169 815 int stime = currticks(); 816 printf ("%s\n", __FUNCTION__); 817 #endif 818 819 tpc->cur_rx = 0; 820 tpc->cur_tx = 0; 821 tpc->dirty_tx = 0; 822 memset(tpc->TxDescArray, 0x0, NUM_TX_DESC * sizeof(struct TxDesc)); 823 memset(tpc->RxDescArray, 0x0, NUM_RX_DESC * sizeof(struct RxDesc)); 824 825 for (i = 0; i < NUM_TX_DESC; i++) { 826 tpc->Tx_skbuff[i] = &txb[i]; 827 } 828 829 for (i = 0; i < NUM_RX_DESC; i++) { 830 if (i == (NUM_RX_DESC - 1)) 831 tpc->RxDescArray[i].status = 832 cpu_to_le32((OWNbit | EORbit) + RX_BUF_SIZE); 833 else 834 tpc->RxDescArray[i].status = 835 cpu_to_le32(OWNbit + RX_BUF_SIZE); 836 837 tpc->RxBufferRing[i] = &rxb[i * RX_BUF_SIZE]; 838 #ifdef CONFIG_DM_ETH 839 tpc->RxDescArray[i].buf_addr = cpu_to_le32(dm_pci_mem_to_phys( 840 dev, (pci_addr_t)(unsigned long)tpc->RxBufferRing[i])); 841 #else 842 tpc->RxDescArray[i].buf_addr = cpu_to_le32(pci_mem_to_phys( 843 dev, (pci_addr_t)(unsigned long)tpc->RxBufferRing[i])); 844 #endif 845 rtl_flush_rx_desc(&tpc->RxDescArray[i]); 846 } 847 848 #ifdef DEBUG_RTL8169 849 printf("%s elapsed time : %lu\n", __func__, currticks()-stime); 850 #endif 851 } 852 853 #ifdef CONFIG_DM_ETH 854 static void rtl8169_common_start(struct udevice *dev, unsigned char *enetaddr, 855 unsigned long dev_iobase) 856 #else 857 static void rtl8169_common_start(pci_dev_t dev, unsigned char *enetaddr, 858 unsigned long dev_iobase) 859 #endif 860 { 861 int i; 862 863 #ifdef DEBUG_RTL8169 864 int stime = currticks(); 865 printf ("%s\n", __FUNCTION__); 866 #endif 867 868 ioaddr = dev_iobase; 869 870 rtl8169_init_ring(dev); 871 rtl8169_hw_start(dev); 872 /* Construct a perfect filter frame with the mac address as first match 873 * and broadcast for all others */ 874 for (i = 0; i < 192; i++) 875 txb[i] = 0xFF; 876 877 txb[0] = enetaddr[0]; 878 txb[1] = enetaddr[1]; 879 txb[2] = enetaddr[2]; 880 txb[3] = enetaddr[3]; 881 txb[4] = enetaddr[4]; 882 txb[5] = enetaddr[5]; 883 884 #ifdef DEBUG_RTL8169 885 printf("%s elapsed time : %lu\n", __func__, currticks()-stime); 886 #endif 887 } 888 889 #ifdef CONFIG_DM_ETH 890 static int rtl8169_eth_start(struct udevice *dev) 891 { 892 struct eth_pdata *plat = dev_get_platdata(dev); 893 struct rtl8169_private *priv = dev_get_priv(dev); 894 895 rtl8169_common_start(dev, plat->enetaddr, priv->iobase); 896 897 return 0; 898 } 899 #else 900 /************************************************************************** 901 RESET - Finish setting up the ethernet interface 902 ***************************************************************************/ 903 static int rtl_reset(struct eth_device *dev, bd_t *bis) 904 { 905 rtl8169_common_start((pci_dev_t)(unsigned long)dev->priv, 906 dev->enetaddr, dev->iobase); 907 908 return 0; 909 } 910 #endif /* nCONFIG_DM_ETH */ 911 912 static void rtl_halt_common(unsigned long dev_iobase) 913 { 914 int i; 915 916 #ifdef DEBUG_RTL8169 917 printf ("%s\n", __FUNCTION__); 918 #endif 919 920 ioaddr = dev_iobase; 921 922 /* Stop the chip's Tx and Rx DMA processes. */ 923 RTL_W8(ChipCmd, 0x00); 924 925 /* Disable interrupts by clearing the interrupt mask. */ 926 RTL_W16(IntrMask, 0x0000); 927 928 RTL_W32(RxMissed, 0); 929 930 for (i = 0; i < NUM_RX_DESC; i++) { 931 tpc->RxBufferRing[i] = NULL; 932 } 933 } 934 935 #ifdef CONFIG_DM_ETH 936 void rtl8169_eth_stop(struct udevice *dev) 937 { 938 struct rtl8169_private *priv = dev_get_priv(dev); 939 940 rtl_halt_common(priv->iobase); 941 } 942 #else 943 /************************************************************************** 944 HALT - Turn off ethernet interface 945 ***************************************************************************/ 946 static void rtl_halt(struct eth_device *dev) 947 { 948 rtl_halt_common(dev->iobase); 949 } 950 #endif 951 952 /************************************************************************** 953 INIT - Look for an adapter, this routine's visible to the outside 954 ***************************************************************************/ 955 956 #define board_found 1 957 #define valid_link 0 958 static int rtl_init(unsigned long dev_ioaddr, const char *name, 959 unsigned char *enetaddr) 960 { 961 static int board_idx = -1; 962 int i, rc; 963 int option = -1, Cap10_100 = 0, Cap1000 = 0; 964 965 #ifdef DEBUG_RTL8169 966 printf ("%s\n", __FUNCTION__); 967 #endif 968 ioaddr = dev_ioaddr; 969 970 board_idx++; 971 972 /* point to private storage */ 973 tpc = &tpx; 974 975 rc = rtl8169_init_board(ioaddr, name); 976 if (rc) 977 return rc; 978 979 /* Get MAC address. FIXME: read EEPROM */ 980 for (i = 0; i < MAC_ADDR_LEN; i++) 981 enetaddr[i] = RTL_R8(MAC0 + i); 982 983 #ifdef DEBUG_RTL8169 984 printf("chipset = %d\n", tpc->chipset); 985 printf("MAC Address"); 986 for (i = 0; i < MAC_ADDR_LEN; i++) 987 printf(":%02x", enetaddr[i]); 988 putc('\n'); 989 #endif 990 991 #ifdef DEBUG_RTL8169 992 /* Print out some hardware info */ 993 printf("%s: at ioaddr 0x%lx\n", name, ioaddr); 994 #endif 995 996 /* if TBI is not endbled */ 997 if (!(RTL_R8(PHYstatus) & TBI_Enable)) { 998 int val = mdio_read(PHY_AUTO_NEGO_REG); 999 1000 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx]; 1001 /* Force RTL8169 in 10/100/1000 Full/Half mode. */ 1002 if (option > 0) { 1003 #ifdef DEBUG_RTL8169 1004 printf("%s: Force-mode Enabled.\n", name); 1005 #endif 1006 Cap10_100 = 0, Cap1000 = 0; 1007 switch (option) { 1008 case _10_Half: 1009 Cap10_100 = PHY_Cap_10_Half; 1010 Cap1000 = PHY_Cap_Null; 1011 break; 1012 case _10_Full: 1013 Cap10_100 = PHY_Cap_10_Full; 1014 Cap1000 = PHY_Cap_Null; 1015 break; 1016 case _100_Half: 1017 Cap10_100 = PHY_Cap_100_Half; 1018 Cap1000 = PHY_Cap_Null; 1019 break; 1020 case _100_Full: 1021 Cap10_100 = PHY_Cap_100_Full; 1022 Cap1000 = PHY_Cap_Null; 1023 break; 1024 case _1000_Full: 1025 Cap10_100 = PHY_Cap_Null; 1026 Cap1000 = PHY_Cap_1000_Full; 1027 break; 1028 default: 1029 break; 1030 } 1031 mdio_write(PHY_AUTO_NEGO_REG, Cap10_100 | (val & 0x1F)); /* leave PHY_AUTO_NEGO_REG bit4:0 unchanged */ 1032 mdio_write(PHY_1000_CTRL_REG, Cap1000); 1033 } else { 1034 #ifdef DEBUG_RTL8169 1035 printf("%s: Auto-negotiation Enabled.\n", 1036 name); 1037 #endif 1038 /* enable 10/100 Full/Half Mode, leave PHY_AUTO_NEGO_REG bit4:0 unchanged */ 1039 mdio_write(PHY_AUTO_NEGO_REG, 1040 PHY_Cap_10_Half | PHY_Cap_10_Full | 1041 PHY_Cap_100_Half | PHY_Cap_100_Full | 1042 (val & 0x1F)); 1043 1044 /* enable 1000 Full Mode */ 1045 mdio_write(PHY_1000_CTRL_REG, PHY_Cap_1000_Full); 1046 1047 } 1048 1049 /* Enable auto-negotiation and restart auto-nigotiation */ 1050 mdio_write(PHY_CTRL_REG, 1051 PHY_Enable_Auto_Nego | PHY_Restart_Auto_Nego); 1052 udelay(100); 1053 1054 /* wait for auto-negotiation process */ 1055 for (i = 10000; i > 0; i--) { 1056 /* check if auto-negotiation complete */ 1057 if (mdio_read(PHY_STAT_REG) & PHY_Auto_Nego_Comp) { 1058 udelay(100); 1059 option = RTL_R8(PHYstatus); 1060 if (option & _1000bpsF) { 1061 #ifdef DEBUG_RTL8169 1062 printf("%s: 1000Mbps Full-duplex operation.\n", 1063 name); 1064 #endif 1065 } else { 1066 #ifdef DEBUG_RTL8169 1067 printf("%s: %sMbps %s-duplex operation.\n", 1068 name, 1069 (option & _100bps) ? "100" : 1070 "10", 1071 (option & FullDup) ? "Full" : 1072 "Half"); 1073 #endif 1074 } 1075 break; 1076 } else { 1077 udelay(100); 1078 } 1079 } /* end for-loop to wait for auto-negotiation process */ 1080 1081 } else { 1082 udelay(100); 1083 #ifdef DEBUG_RTL8169 1084 printf 1085 ("%s: 1000Mbps Full-duplex operation, TBI Link %s!\n", 1086 name, 1087 (RTL_R32(TBICSR) & TBILinkOK) ? "OK" : "Failed"); 1088 #endif 1089 } 1090 1091 1092 tpc->RxDescArray = rtl_alloc_descs(NUM_RX_DESC); 1093 if (!tpc->RxDescArray) 1094 return -ENOMEM; 1095 1096 tpc->TxDescArray = rtl_alloc_descs(NUM_TX_DESC); 1097 if (!tpc->TxDescArray) 1098 return -ENOMEM; 1099 1100 return 0; 1101 } 1102 1103 #ifndef CONFIG_DM_ETH 1104 int rtl8169_initialize(bd_t *bis) 1105 { 1106 pci_dev_t devno; 1107 int card_number = 0; 1108 struct eth_device *dev; 1109 u32 iobase; 1110 int idx=0; 1111 1112 while(1){ 1113 unsigned int region; 1114 u16 device; 1115 int err; 1116 1117 /* Find RTL8169 */ 1118 if ((devno = pci_find_devices(supported, idx++)) < 0) 1119 break; 1120 1121 pci_read_config_word(devno, PCI_DEVICE_ID, &device); 1122 switch (device) { 1123 case 0x8168: 1124 region = 2; 1125 break; 1126 1127 default: 1128 region = 1; 1129 break; 1130 } 1131 1132 pci_read_config_dword(devno, PCI_BASE_ADDRESS_0 + (region * 4), &iobase); 1133 iobase &= ~0xf; 1134 1135 debug ("rtl8169: REALTEK RTL8169 @0x%x\n", iobase); 1136 1137 dev = (struct eth_device *)malloc(sizeof *dev); 1138 if (!dev) { 1139 printf("Can not allocate memory of rtl8169\n"); 1140 break; 1141 } 1142 1143 memset(dev, 0, sizeof(*dev)); 1144 sprintf (dev->name, "RTL8169#%d", card_number); 1145 1146 dev->priv = (void *)(unsigned long)devno; 1147 dev->iobase = (int)pci_mem_to_phys(devno, iobase); 1148 1149 dev->init = rtl_reset; 1150 dev->halt = rtl_halt; 1151 dev->send = rtl_send; 1152 dev->recv = rtl_recv; 1153 1154 err = rtl_init(dev->iobase, dev->name, dev->enetaddr); 1155 if (err < 0) { 1156 printf(pr_fmt("failed to initialize card: %d\n"), err); 1157 free(dev); 1158 continue; 1159 } 1160 1161 eth_register (dev); 1162 1163 card_number++; 1164 } 1165 return card_number; 1166 } 1167 #endif 1168 1169 #ifdef CONFIG_DM_ETH 1170 static int rtl8169_eth_probe(struct udevice *dev) 1171 { 1172 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev); 1173 struct rtl8169_private *priv = dev_get_priv(dev); 1174 struct eth_pdata *plat = dev_get_platdata(dev); 1175 u32 iobase; 1176 int region; 1177 int ret; 1178 1179 debug("rtl8169: REALTEK RTL8169 @0x%x\n", iobase); 1180 switch (pplat->device) { 1181 case 0x8168: 1182 region = 2; 1183 break; 1184 default: 1185 region = 1; 1186 break; 1187 } 1188 dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0 + region * 4, &iobase); 1189 iobase &= ~0xf; 1190 priv->iobase = (int)dm_pci_mem_to_phys(dev, iobase); 1191 1192 ret = rtl_init(priv->iobase, dev->name, plat->enetaddr); 1193 if (ret < 0) { 1194 printf(pr_fmt("failed to initialize card: %d\n"), ret); 1195 return ret; 1196 } 1197 1198 return 0; 1199 } 1200 1201 static const struct eth_ops rtl8169_eth_ops = { 1202 .start = rtl8169_eth_start, 1203 .send = rtl8169_eth_send, 1204 .recv = rtl8169_eth_recv, 1205 .stop = rtl8169_eth_stop, 1206 }; 1207 1208 static const struct udevice_id rtl8169_eth_ids[] = { 1209 { .compatible = "realtek,rtl8169" }, 1210 { } 1211 }; 1212 1213 U_BOOT_DRIVER(eth_rtl8169) = { 1214 .name = "eth_rtl8169", 1215 .id = UCLASS_ETH, 1216 .of_match = rtl8169_eth_ids, 1217 .probe = rtl8169_eth_probe, 1218 .ops = &rtl8169_eth_ops, 1219 .priv_auto_alloc_size = sizeof(struct rtl8169_private), 1220 .platdata_auto_alloc_size = sizeof(struct eth_pdata), 1221 }; 1222 1223 U_BOOT_PCI_DEVICE(eth_rtl8169, supported); 1224 #endif 1225