treewide: mem: Enable MEMTEST via defconfig
[oweals/u-boot.git] / drivers / net / rtl8169.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * rtl8169.c : U-Boot driver for the RealTek RTL8169
4  *
5  * Masami Komiya (mkomiya@sonare.it)
6  *
7  * Most part is taken from r8169.c of etherboot
8  *
9  */
10
11 /**************************************************************************
12 *    r8169.c: Etherboot device driver for the RealTek RTL-8169 Gigabit
13 *    Written 2003 by Timothy Legge <tlegge@rogers.com>
14 *
15 *    Portions of this code based on:
16 *       r8169.c: A RealTek RTL-8169 Gigabit Ethernet driver
17 *               for Linux kernel 2.4.x.
18 *
19 *    Written 2002 ShuChen <shuchen@realtek.com.tw>
20 *         See Linux Driver for full information
21 *
22 *    Linux Driver Version 1.27a, 10.02.2002
23 *
24 *    Thanks to:
25 *       Jean Chen of RealTek Semiconductor Corp. for
26 *       providing the evaluation NIC used to develop
27 *       this driver.  RealTek's support for Etherboot
28 *       is appreciated.
29 *
30 *    REVISION HISTORY:
31 *    ================
32 *
33 *    v1.0       11-26-2003      timlegge        Initial port of Linux driver
34 *    v1.5       01-17-2004      timlegge        Initial driver output cleanup
35 *
36 *    Indent Options: indent -kr -i8
37 ***************************************************************************/
38 /*
39  * 26 August 2006 Mihai Georgian <u-boot@linuxnotincluded.org.uk>
40  * Modified to use le32_to_cpu and cpu_to_le32 properly
41  */
42 #include <common.h>
43 #include <cpu_func.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 bus_to_phys(a)  pci_mem_to_phys((pci_dev_t)(unsigned long)dev->priv, \
107         (pci_addr_t)(unsigned long)a)
108 #define phys_to_bus(a)  pci_phys_to_mem((pci_dev_t)(unsigned long)dev->priv, \
109         (phys_addr_t)a)
110
111 enum RTL8169_registers {
112         MAC0 = 0,               /* Ethernet hardware address. */
113         MAR0 = 8,               /* Multicast filter. */
114         TxDescStartAddrLow = 0x20,
115         TxDescStartAddrHigh = 0x24,
116         TxHDescStartAddrLow = 0x28,
117         TxHDescStartAddrHigh = 0x2c,
118         FLASH = 0x30,
119         ERSR = 0x36,
120         ChipCmd = 0x37,
121         TxPoll = 0x38,
122         IntrMask = 0x3C,
123         IntrStatus = 0x3E,
124         TxConfig = 0x40,
125         RxConfig = 0x44,
126         RxMissed = 0x4C,
127         Cfg9346 = 0x50,
128         Config0 = 0x51,
129         Config1 = 0x52,
130         Config2 = 0x53,
131         Config3 = 0x54,
132         Config4 = 0x55,
133         Config5 = 0x56,
134         MultiIntr = 0x5C,
135         PHYAR = 0x60,
136         TBICSR = 0x64,
137         TBI_ANAR = 0x68,
138         TBI_LPAR = 0x6A,
139         PHYstatus = 0x6C,
140         RxMaxSize = 0xDA,
141         CPlusCmd = 0xE0,
142         RxDescStartAddrLow = 0xE4,
143         RxDescStartAddrHigh = 0xE8,
144         EarlyTxThres = 0xEC,
145         FuncEvent = 0xF0,
146         FuncEventMask = 0xF4,
147         FuncPresetState = 0xF8,
148         FuncForceEvent = 0xFC,
149 };
150
151 enum RTL8169_register_content {
152         /*InterruptStatusBits */
153         SYSErr = 0x8000,
154         PCSTimeout = 0x4000,
155         SWInt = 0x0100,
156         TxDescUnavail = 0x80,
157         RxFIFOOver = 0x40,
158         RxUnderrun = 0x20,
159         RxOverflow = 0x10,
160         TxErr = 0x08,
161         TxOK = 0x04,
162         RxErr = 0x02,
163         RxOK = 0x01,
164
165         /*RxStatusDesc */
166         RxRES = 0x00200000,
167         RxCRC = 0x00080000,
168         RxRUNT = 0x00100000,
169         RxRWT = 0x00400000,
170
171         /*ChipCmdBits */
172         CmdReset = 0x10,
173         CmdRxEnb = 0x08,
174         CmdTxEnb = 0x04,
175         RxBufEmpty = 0x01,
176
177         /*Cfg9346Bits */
178         Cfg9346_Lock = 0x00,
179         Cfg9346_Unlock = 0xC0,
180
181         /*rx_mode_bits */
182         AcceptErr = 0x20,
183         AcceptRunt = 0x10,
184         AcceptBroadcast = 0x08,
185         AcceptMulticast = 0x04,
186         AcceptMyPhys = 0x02,
187         AcceptAllPhys = 0x01,
188
189         /*RxConfigBits */
190         RxCfgFIFOShift = 13,
191         RxCfgDMAShift = 8,
192
193         /*TxConfigBits */
194         TxInterFrameGapShift = 24,
195         TxDMAShift = 8,         /* DMA burst value (0-7) is shift this many bits */
196
197         /*rtl8169_PHYstatus */
198         TBI_Enable = 0x80,
199         TxFlowCtrl = 0x40,
200         RxFlowCtrl = 0x20,
201         _1000bpsF = 0x10,
202         _100bps = 0x08,
203         _10bps = 0x04,
204         LinkStatus = 0x02,
205         FullDup = 0x01,
206
207         /*GIGABIT_PHY_registers */
208         PHY_CTRL_REG = 0,
209         PHY_STAT_REG = 1,
210         PHY_AUTO_NEGO_REG = 4,
211         PHY_1000_CTRL_REG = 9,
212
213         /*GIGABIT_PHY_REG_BIT */
214         PHY_Restart_Auto_Nego = 0x0200,
215         PHY_Enable_Auto_Nego = 0x1000,
216
217         /* PHY_STAT_REG = 1; */
218         PHY_Auto_Nego_Comp = 0x0020,
219
220         /* PHY_AUTO_NEGO_REG = 4; */
221         PHY_Cap_10_Half = 0x0020,
222         PHY_Cap_10_Full = 0x0040,
223         PHY_Cap_100_Half = 0x0080,
224         PHY_Cap_100_Full = 0x0100,
225
226         /* PHY_1000_CTRL_REG = 9; */
227         PHY_Cap_1000_Full = 0x0200,
228
229         PHY_Cap_Null = 0x0,
230
231         /*_MediaType*/
232         _10_Half = 0x01,
233         _10_Full = 0x02,
234         _100_Half = 0x04,
235         _100_Full = 0x08,
236         _1000_Full = 0x10,
237
238         /*_TBICSRBit*/
239         TBILinkOK = 0x02000000,
240 };
241
242 static struct {
243         const char *name;
244         u8 version;             /* depend on RTL8169 docs */
245         u32 RxConfigMask;       /* should clear the bits supported by this chip */
246 } rtl_chip_info[] = {
247         {"RTL-8169", 0x00, 0xff7e1880,},
248         {"RTL-8169", 0x04, 0xff7e1880,},
249         {"RTL-8169", 0x00, 0xff7e1880,},
250         {"RTL-8169s/8110s",     0x02, 0xff7e1880,},
251         {"RTL-8169s/8110s",     0x04, 0xff7e1880,},
252         {"RTL-8169sb/8110sb",   0x10, 0xff7e1880,},
253         {"RTL-8169sc/8110sc",   0x18, 0xff7e1880,},
254         {"RTL-8168b/8111sb",    0x30, 0xff7e1880,},
255         {"RTL-8168b/8111sb",    0x38, 0xff7e1880,},
256         {"RTL-8168c/8111c",     0x3c, 0xff7e1880,},
257         {"RTL-8168d/8111d",     0x28, 0xff7e1880,},
258         {"RTL-8168evl/8111evl", 0x2e, 0xff7e1880,},
259         {"RTL-8168/8111g",      0x4c, 0xff7e1880,},
260         {"RTL-8101e",           0x34, 0xff7e1880,},
261         {"RTL-8100e",           0x32, 0xff7e1880,},
262         {"RTL-8168h/8111h",     0x54, 0xff7e1880,},
263 };
264
265 enum _DescStatusBit {
266         OWNbit = 0x80000000,
267         EORbit = 0x40000000,
268         FSbit = 0x20000000,
269         LSbit = 0x10000000,
270 };
271
272 struct TxDesc {
273         u32 status;
274         u32 vlan_tag;
275         u32 buf_addr;
276         u32 buf_Haddr;
277 };
278
279 struct RxDesc {
280         u32 status;
281         u32 vlan_tag;
282         u32 buf_addr;
283         u32 buf_Haddr;
284 };
285
286 static unsigned char rxdata[RX_BUF_LEN];
287
288 #define RTL8169_DESC_SIZE 16
289
290 #if ARCH_DMA_MINALIGN > 256
291 #  define RTL8169_ALIGN ARCH_DMA_MINALIGN
292 #else
293 #  define RTL8169_ALIGN 256
294 #endif
295
296 /*
297  * Warn if the cache-line size is larger than the descriptor size. In such
298  * cases the driver will likely fail because the CPU needs to flush the cache
299  * when requeuing RX buffers, therefore descriptors written by the hardware
300  * may be discarded.
301  *
302  * This can be fixed by defining CONFIG_SYS_NONCACHED_MEMORY which will cause
303  * the driver to allocate descriptors from a pool of non-cached memory.
304  */
305 #if RTL8169_DESC_SIZE < ARCH_DMA_MINALIGN
306 #if !defined(CONFIG_SYS_NONCACHED_MEMORY) && \
307         !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) && !defined(CONFIG_X86)
308 #warning cache-line size is larger than descriptor size
309 #endif
310 #endif
311
312 /*
313  * Create a static buffer of size RX_BUF_SZ for each TX Descriptor. All
314  * descriptors point to a part of this buffer.
315  */
316 DEFINE_ALIGN_BUFFER(u8, txb, NUM_TX_DESC * RX_BUF_SIZE, RTL8169_ALIGN);
317
318 /*
319  * Create a static buffer of size RX_BUF_SZ for each RX Descriptor. All
320  * descriptors point to a part of this buffer.
321  */
322 DEFINE_ALIGN_BUFFER(u8, rxb, NUM_RX_DESC * RX_BUF_SIZE, RTL8169_ALIGN);
323
324 struct rtl8169_private {
325         ulong iobase;
326         void *mmio_addr;        /* memory map physical address */
327         int chipset;
328         unsigned long cur_rx;   /* Index into the Rx descriptor buffer of next Rx pkt. */
329         unsigned long cur_tx;   /* Index into the Tx descriptor buffer of next Rx pkt. */
330         unsigned long dirty_tx;
331         struct TxDesc *TxDescArray;     /* Index of 256-alignment Tx Descriptor buffer */
332         struct RxDesc *RxDescArray;     /* Index of 256-alignment Rx Descriptor buffer */
333         unsigned char *RxBufferRings;   /* Index of Rx Buffer  */
334         unsigned char *RxBufferRing[NUM_RX_DESC];       /* Index of Rx Buffer array */
335         unsigned char *Tx_skbuff[NUM_TX_DESC];
336 } tpx;
337
338 static struct rtl8169_private *tpc;
339
340 static const unsigned int rtl8169_rx_config =
341     (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
342
343 static struct pci_device_id supported[] = {
344         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167) },
345         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168) },
346         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169) },
347         {}
348 };
349
350 void mdio_write(int RegAddr, int value)
351 {
352         int i;
353
354         RTL_W32(PHYAR, 0x80000000 | (RegAddr & 0xFF) << 16 | value);
355         udelay(1000);
356
357         for (i = 2000; i > 0; i--) {
358                 /* Check if the RTL8169 has completed writing to the specified MII register */
359                 if (!(RTL_R32(PHYAR) & 0x80000000)) {
360                         break;
361                 } else {
362                         udelay(100);
363                 }
364         }
365 }
366
367 int mdio_read(int RegAddr)
368 {
369         int i, value = -1;
370
371         RTL_W32(PHYAR, 0x0 | (RegAddr & 0xFF) << 16);
372         udelay(1000);
373
374         for (i = 2000; i > 0; i--) {
375                 /* Check if the RTL8169 has completed retrieving data from the specified MII register */
376                 if (RTL_R32(PHYAR) & 0x80000000) {
377                         value = (int) (RTL_R32(PHYAR) & 0xFFFF);
378                         break;
379                 } else {
380                         udelay(100);
381                 }
382         }
383         return value;
384 }
385
386 static int rtl8169_init_board(unsigned long dev_iobase, const char *name)
387 {
388         int i;
389         u32 tmp;
390
391 #ifdef DEBUG_RTL8169
392         printf ("%s\n", __FUNCTION__);
393 #endif
394         ioaddr = dev_iobase;
395
396         /* Soft reset the chip. */
397         RTL_W8(ChipCmd, CmdReset);
398
399         /* Check that the chip has finished the reset. */
400         for (i = 1000; i > 0; i--)
401                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
402                         break;
403                 else
404                         udelay(10);
405
406         /* identify chip attached to board */
407         tmp = RTL_R32(TxConfig);
408         tmp = ((tmp & 0x7c000000) + ((tmp & 0x00800000) << 2)) >> 24;
409
410         for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--){
411                 if (tmp == rtl_chip_info[i].version) {
412                         tpc->chipset = i;
413                         goto match;
414                 }
415         }
416
417         /* if unknown chip, assume array element #0, original RTL-8169 in this case */
418         printf("PCI device %s: unknown chip version, assuming RTL-8169\n",
419                name);
420         printf("PCI device: TxConfig = 0x%lX\n", (unsigned long) RTL_R32(TxConfig));
421         tpc->chipset = 0;
422
423 match:
424         return 0;
425 }
426
427 /*
428  * TX and RX descriptors are 16 bytes. This causes problems with the cache
429  * maintenance on CPUs where the cache-line size exceeds the size of these
430  * descriptors. What will happen is that when the driver receives a packet
431  * it will be immediately requeued for the hardware to reuse. The CPU will
432  * therefore need to flush the cache-line containing the descriptor, which
433  * will cause all other descriptors in the same cache-line to be flushed
434  * along with it. If one of those descriptors had been written to by the
435  * device those changes (and the associated packet) will be lost.
436  *
437  * To work around this, we make use of non-cached memory if available. If
438  * descriptors are mapped uncached there's no need to manually flush them
439  * or invalidate them.
440  *
441  * Note that this only applies to descriptors. The packet data buffers do
442  * not have the same constraints since they are 1536 bytes large, so they
443  * are unlikely to share cache-lines.
444  */
445 static void *rtl_alloc_descs(unsigned int num)
446 {
447         size_t size = num * RTL8169_DESC_SIZE;
448
449 #ifdef CONFIG_SYS_NONCACHED_MEMORY
450         return (void *)noncached_alloc(size, RTL8169_ALIGN);
451 #else
452         return memalign(RTL8169_ALIGN, size);
453 #endif
454 }
455
456 /*
457  * Cache maintenance functions. These are simple wrappers around the more
458  * general purpose flush_cache() and invalidate_dcache_range() functions.
459  */
460
461 static void rtl_inval_rx_desc(struct RxDesc *desc)
462 {
463 #ifndef CONFIG_SYS_NONCACHED_MEMORY
464         unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1);
465         unsigned long end = ALIGN(start + sizeof(*desc), ARCH_DMA_MINALIGN);
466
467         invalidate_dcache_range(start, end);
468 #endif
469 }
470
471 static void rtl_flush_rx_desc(struct RxDesc *desc)
472 {
473 #ifndef CONFIG_SYS_NONCACHED_MEMORY
474         flush_cache((unsigned long)desc, sizeof(*desc));
475 #endif
476 }
477
478 static void rtl_inval_tx_desc(struct TxDesc *desc)
479 {
480 #ifndef CONFIG_SYS_NONCACHED_MEMORY
481         unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1);
482         unsigned long end = ALIGN(start + sizeof(*desc), ARCH_DMA_MINALIGN);
483
484         invalidate_dcache_range(start, end);
485 #endif
486 }
487
488 static void rtl_flush_tx_desc(struct TxDesc *desc)
489 {
490 #ifndef CONFIG_SYS_NONCACHED_MEMORY
491         flush_cache((unsigned long)desc, sizeof(*desc));
492 #endif
493 }
494
495 static void rtl_inval_buffer(void *buf, size_t size)
496 {
497         unsigned long start = (unsigned long)buf & ~(ARCH_DMA_MINALIGN - 1);
498         unsigned long end = ALIGN(start + size, ARCH_DMA_MINALIGN);
499
500         invalidate_dcache_range(start, end);
501 }
502
503 static void rtl_flush_buffer(void *buf, size_t size)
504 {
505         flush_cache((unsigned long)buf, size);
506 }
507
508 /**************************************************************************
509 RECV - Receive a frame
510 ***************************************************************************/
511 #ifdef CONFIG_DM_ETH
512 static int rtl_recv_common(struct udevice *dev, unsigned long dev_iobase,
513                            uchar **packetp)
514 #else
515 static int rtl_recv_common(pci_dev_t dev, unsigned long dev_iobase,
516                            uchar **packetp)
517 #endif
518 {
519         /* return true if there's an ethernet packet ready to read */
520         /* nic->packet should contain data on return */
521         /* nic->packetlen should contain length of data */
522         int cur_rx;
523         int length = 0;
524
525 #ifdef DEBUG_RTL8169_RX
526         printf ("%s\n", __FUNCTION__);
527 #endif
528         ioaddr = dev_iobase;
529
530         cur_rx = tpc->cur_rx;
531
532         rtl_inval_rx_desc(&tpc->RxDescArray[cur_rx]);
533
534         if ((le32_to_cpu(tpc->RxDescArray[cur_rx].status) & OWNbit) == 0) {
535                 if (!(le32_to_cpu(tpc->RxDescArray[cur_rx].status) & RxRES)) {
536                         length = (int) (le32_to_cpu(tpc->RxDescArray[cur_rx].
537                                                 status) & 0x00001FFF) - 4;
538
539                         rtl_inval_buffer(tpc->RxBufferRing[cur_rx], length);
540                         memcpy(rxdata, tpc->RxBufferRing[cur_rx], length);
541
542                         if (cur_rx == NUM_RX_DESC - 1)
543                                 tpc->RxDescArray[cur_rx].status =
544                                         cpu_to_le32((OWNbit | EORbit) + RX_BUF_SIZE);
545                         else
546                                 tpc->RxDescArray[cur_rx].status =
547                                         cpu_to_le32(OWNbit + RX_BUF_SIZE);
548 #ifdef CONFIG_DM_ETH
549                         tpc->RxDescArray[cur_rx].buf_addr = cpu_to_le32(
550                                 dm_pci_mem_to_phys(dev,
551                                         (pci_addr_t)(unsigned long)
552                                         tpc->RxBufferRing[cur_rx]));
553 #else
554                         tpc->RxDescArray[cur_rx].buf_addr = cpu_to_le32(
555                                 pci_mem_to_phys(dev, (pci_addr_t)(unsigned long)
556                                 tpc->RxBufferRing[cur_rx]));
557 #endif
558                         rtl_flush_rx_desc(&tpc->RxDescArray[cur_rx]);
559 #ifdef CONFIG_DM_ETH
560                         *packetp = rxdata;
561 #else
562                         net_process_received_packet(rxdata, length);
563 #endif
564                 } else {
565                         puts("Error Rx");
566                         length = -EIO;
567                 }
568                 cur_rx = (cur_rx + 1) % NUM_RX_DESC;
569                 tpc->cur_rx = cur_rx;
570                 return length;
571
572         } else {
573                 ushort sts = RTL_R8(IntrStatus);
574                 RTL_W8(IntrStatus, sts & ~(TxErr | RxErr | SYSErr));
575                 udelay(100);    /* wait */
576         }
577         tpc->cur_rx = cur_rx;
578         return (0);             /* initially as this is called to flush the input */
579 }
580
581 #ifdef CONFIG_DM_ETH
582 int rtl8169_eth_recv(struct udevice *dev, int flags, uchar **packetp)
583 {
584         struct rtl8169_private *priv = dev_get_priv(dev);
585
586         return rtl_recv_common(dev, priv->iobase, packetp);
587 }
588 #else
589 static int rtl_recv(struct eth_device *dev)
590 {
591         return rtl_recv_common((pci_dev_t)(unsigned long)dev->priv,
592                                dev->iobase, NULL);
593 }
594 #endif /* nCONFIG_DM_ETH */
595
596 #define HZ 1000
597 /**************************************************************************
598 SEND - Transmit a frame
599 ***************************************************************************/
600 #ifdef CONFIG_DM_ETH
601 static int rtl_send_common(struct udevice *dev, unsigned long dev_iobase,
602                            void *packet, int length)
603 #else
604 static int rtl_send_common(pci_dev_t dev, unsigned long dev_iobase,
605                            void *packet, int length)
606 #endif
607 {
608         /* send the packet to destination */
609
610         u32 to;
611         u8 *ptxb;
612         int entry = tpc->cur_tx % NUM_TX_DESC;
613         u32 len = length;
614         int ret;
615
616 #ifdef DEBUG_RTL8169_TX
617         int stime = currticks();
618         printf ("%s\n", __FUNCTION__);
619         printf("sending %d bytes\n", len);
620 #endif
621
622         ioaddr = dev_iobase;
623
624         /* point to the current txb incase multiple tx_rings are used */
625         ptxb = tpc->Tx_skbuff[entry * MAX_ETH_FRAME_SIZE];
626         memcpy(ptxb, (char *)packet, (int)length);
627
628         while (len < ETH_ZLEN)
629                 ptxb[len++] = '\0';
630
631         rtl_flush_buffer(ptxb, ALIGN(len, RTL8169_ALIGN));
632
633         tpc->TxDescArray[entry].buf_Haddr = 0;
634 #ifdef CONFIG_DM_ETH
635         tpc->TxDescArray[entry].buf_addr = cpu_to_le32(
636                 dm_pci_mem_to_phys(dev, (pci_addr_t)(unsigned long)ptxb));
637 #else
638         tpc->TxDescArray[entry].buf_addr = cpu_to_le32(
639                 pci_mem_to_phys(dev, (pci_addr_t)(unsigned long)ptxb));
640 #endif
641         if (entry != (NUM_TX_DESC - 1)) {
642                 tpc->TxDescArray[entry].status =
643                         cpu_to_le32((OWNbit | FSbit | LSbit) |
644                                     ((len > ETH_ZLEN) ? len : ETH_ZLEN));
645         } else {
646                 tpc->TxDescArray[entry].status =
647                         cpu_to_le32((OWNbit | EORbit | FSbit | LSbit) |
648                                     ((len > ETH_ZLEN) ? len : ETH_ZLEN));
649         }
650         rtl_flush_tx_desc(&tpc->TxDescArray[entry]);
651         RTL_W8(TxPoll, 0x40);   /* set polling bit */
652
653         tpc->cur_tx++;
654         to = currticks() + TX_TIMEOUT;
655         do {
656                 rtl_inval_tx_desc(&tpc->TxDescArray[entry]);
657         } while ((le32_to_cpu(tpc->TxDescArray[entry].status) & OWNbit)
658                                 && (currticks() < to)); /* wait */
659
660         if (currticks() >= to) {
661 #ifdef DEBUG_RTL8169_TX
662                 puts("tx timeout/error\n");
663                 printf("%s elapsed time : %lu\n", __func__, currticks()-stime);
664 #endif
665                 ret = -ETIMEDOUT;
666         } else {
667 #ifdef DEBUG_RTL8169_TX
668                 puts("tx done\n");
669 #endif
670                 ret = 0;
671         }
672         /* Delay to make net console (nc) work properly */
673         udelay(20);
674         return ret;
675 }
676
677 #ifdef CONFIG_DM_ETH
678 int rtl8169_eth_send(struct udevice *dev, void *packet, int length)
679 {
680         struct rtl8169_private *priv = dev_get_priv(dev);
681
682         return rtl_send_common(dev, priv->iobase, packet, length);
683 }
684
685 #else
686 static int rtl_send(struct eth_device *dev, void *packet, int length)
687 {
688         return rtl_send_common((pci_dev_t)(unsigned long)dev->priv,
689                                dev->iobase, packet, length);
690 }
691 #endif
692
693 static void rtl8169_set_rx_mode(void)
694 {
695         u32 mc_filter[2];       /* Multicast hash filter */
696         int rx_mode;
697         u32 tmp = 0;
698
699 #ifdef DEBUG_RTL8169
700         printf ("%s\n", __FUNCTION__);
701 #endif
702
703         /* IFF_ALLMULTI */
704         /* Too many to filter perfectly -- accept all multicasts. */
705         rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
706         mc_filter[1] = mc_filter[0] = 0xffffffff;
707
708         tmp = rtl8169_rx_config | rx_mode | (RTL_R32(RxConfig) &
709                                    rtl_chip_info[tpc->chipset].RxConfigMask);
710
711         RTL_W32(RxConfig, tmp);
712         RTL_W32(MAR0 + 0, mc_filter[0]);
713         RTL_W32(MAR0 + 4, mc_filter[1]);
714 }
715
716 #ifdef CONFIG_DM_ETH
717 static void rtl8169_hw_start(struct udevice *dev)
718 #else
719 static void rtl8169_hw_start(pci_dev_t dev)
720 #endif
721 {
722         u32 i;
723
724 #ifdef DEBUG_RTL8169
725         int stime = currticks();
726         printf ("%s\n", __FUNCTION__);
727 #endif
728
729 #if 0
730         /* Soft reset the chip. */
731         RTL_W8(ChipCmd, CmdReset);
732
733         /* Check that the chip has finished the reset. */
734         for (i = 1000; i > 0; i--) {
735                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
736                         break;
737                 else
738                         udelay(10);
739         }
740 #endif
741
742         RTL_W8(Cfg9346, Cfg9346_Unlock);
743
744         /* RTL-8169sb/8110sb or previous version */
745         if (tpc->chipset <= 5)
746                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
747
748         RTL_W8(EarlyTxThres, EarlyTxThld);
749
750         /* For gigabit rtl8169 */
751         RTL_W16(RxMaxSize, RxPacketMaxSize);
752
753         /* Set Rx Config register */
754         i = rtl8169_rx_config | (RTL_R32(RxConfig) &
755                                  rtl_chip_info[tpc->chipset].RxConfigMask);
756         RTL_W32(RxConfig, i);
757
758         /* Set DMA burst size and Interframe Gap Time */
759         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
760                                 (InterFrameGap << TxInterFrameGapShift));
761
762
763         tpc->cur_rx = 0;
764
765 #ifdef CONFIG_DM_ETH
766         RTL_W32(TxDescStartAddrLow, dm_pci_mem_to_phys(dev,
767                         (pci_addr_t)(unsigned long)tpc->TxDescArray));
768 #else
769         RTL_W32(TxDescStartAddrLow, pci_mem_to_phys(dev,
770                         (pci_addr_t)(unsigned long)tpc->TxDescArray));
771 #endif
772         RTL_W32(TxDescStartAddrHigh, (unsigned long)0);
773 #ifdef CONFIG_DM_ETH
774         RTL_W32(RxDescStartAddrLow, dm_pci_mem_to_phys(
775                         dev, (pci_addr_t)(unsigned long)tpc->RxDescArray));
776 #else
777         RTL_W32(RxDescStartAddrLow, pci_mem_to_phys(
778                         dev, (pci_addr_t)(unsigned long)tpc->RxDescArray));
779 #endif
780         RTL_W32(RxDescStartAddrHigh, (unsigned long)0);
781
782         /* RTL-8169sc/8110sc or later version */
783         if (tpc->chipset > 5)
784                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
785
786         RTL_W8(Cfg9346, Cfg9346_Lock);
787         udelay(10);
788
789         RTL_W32(RxMissed, 0);
790
791         rtl8169_set_rx_mode();
792
793         /* no early-rx interrupts */
794         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
795
796 #ifdef DEBUG_RTL8169
797         printf("%s elapsed time : %lu\n", __func__, currticks()-stime);
798 #endif
799 }
800
801 #ifdef CONFIG_DM_ETH
802 static void rtl8169_init_ring(struct udevice *dev)
803 #else
804 static void rtl8169_init_ring(pci_dev_t dev)
805 #endif
806 {
807         int i;
808
809 #ifdef DEBUG_RTL8169
810         int stime = currticks();
811         printf ("%s\n", __FUNCTION__);
812 #endif
813
814         tpc->cur_rx = 0;
815         tpc->cur_tx = 0;
816         tpc->dirty_tx = 0;
817         memset(tpc->TxDescArray, 0x0, NUM_TX_DESC * sizeof(struct TxDesc));
818         memset(tpc->RxDescArray, 0x0, NUM_RX_DESC * sizeof(struct RxDesc));
819
820         for (i = 0; i < NUM_TX_DESC; i++) {
821                 tpc->Tx_skbuff[i] = &txb[i];
822         }
823
824         for (i = 0; i < NUM_RX_DESC; i++) {
825                 if (i == (NUM_RX_DESC - 1))
826                         tpc->RxDescArray[i].status =
827                                 cpu_to_le32((OWNbit | EORbit) + RX_BUF_SIZE);
828                 else
829                         tpc->RxDescArray[i].status =
830                                 cpu_to_le32(OWNbit + RX_BUF_SIZE);
831
832                 tpc->RxBufferRing[i] = &rxb[i * RX_BUF_SIZE];
833 #ifdef CONFIG_DM_ETH
834                 tpc->RxDescArray[i].buf_addr = cpu_to_le32(dm_pci_mem_to_phys(
835                         dev, (pci_addr_t)(unsigned long)tpc->RxBufferRing[i]));
836 #else
837                 tpc->RxDescArray[i].buf_addr = cpu_to_le32(pci_mem_to_phys(
838                         dev, (pci_addr_t)(unsigned long)tpc->RxBufferRing[i]));
839 #endif
840                 rtl_flush_rx_desc(&tpc->RxDescArray[i]);
841         }
842
843 #ifdef DEBUG_RTL8169
844         printf("%s elapsed time : %lu\n", __func__, currticks()-stime);
845 #endif
846 }
847
848 #ifdef CONFIG_DM_ETH
849 static void rtl8169_common_start(struct udevice *dev, unsigned char *enetaddr,
850                                  unsigned long dev_iobase)
851 #else
852 static void rtl8169_common_start(pci_dev_t dev, unsigned char *enetaddr,
853                                  unsigned long dev_iobase)
854 #endif
855 {
856         int i;
857
858 #ifdef DEBUG_RTL8169
859         int stime = currticks();
860         printf ("%s\n", __FUNCTION__);
861 #endif
862
863         ioaddr = dev_iobase;
864
865         rtl8169_init_ring(dev);
866         rtl8169_hw_start(dev);
867         /* Construct a perfect filter frame with the mac address as first match
868          * and broadcast for all others */
869         for (i = 0; i < 192; i++)
870                 txb[i] = 0xFF;
871
872         txb[0] = enetaddr[0];
873         txb[1] = enetaddr[1];
874         txb[2] = enetaddr[2];
875         txb[3] = enetaddr[3];
876         txb[4] = enetaddr[4];
877         txb[5] = enetaddr[5];
878
879 #ifdef DEBUG_RTL8169
880         printf("%s elapsed time : %lu\n", __func__, currticks()-stime);
881 #endif
882 }
883
884 #ifdef CONFIG_DM_ETH
885 static int rtl8169_eth_start(struct udevice *dev)
886 {
887         struct eth_pdata *plat = dev_get_platdata(dev);
888         struct rtl8169_private *priv = dev_get_priv(dev);
889
890         rtl8169_common_start(dev, plat->enetaddr, priv->iobase);
891
892         return 0;
893 }
894 #else
895 /**************************************************************************
896 RESET - Finish setting up the ethernet interface
897 ***************************************************************************/
898 static int rtl_reset(struct eth_device *dev, bd_t *bis)
899 {
900         rtl8169_common_start((pci_dev_t)(unsigned long)dev->priv,
901                              dev->enetaddr, dev->iobase);
902
903         return 0;
904 }
905 #endif /* nCONFIG_DM_ETH */
906
907 static void rtl_halt_common(unsigned long dev_iobase)
908 {
909         int i;
910
911 #ifdef DEBUG_RTL8169
912         printf ("%s\n", __FUNCTION__);
913 #endif
914
915         ioaddr = dev_iobase;
916
917         /* Stop the chip's Tx and Rx DMA processes. */
918         RTL_W8(ChipCmd, 0x00);
919
920         /* Disable interrupts by clearing the interrupt mask. */
921         RTL_W16(IntrMask, 0x0000);
922
923         RTL_W32(RxMissed, 0);
924
925         for (i = 0; i < NUM_RX_DESC; i++) {
926                 tpc->RxBufferRing[i] = NULL;
927         }
928 }
929
930 #ifdef CONFIG_DM_ETH
931 void rtl8169_eth_stop(struct udevice *dev)
932 {
933         struct rtl8169_private *priv = dev_get_priv(dev);
934
935         rtl_halt_common(priv->iobase);
936 }
937 #else
938 /**************************************************************************
939 HALT - Turn off ethernet interface
940 ***************************************************************************/
941 static void rtl_halt(struct eth_device *dev)
942 {
943         rtl_halt_common(dev->iobase);
944 }
945 #endif
946
947 #ifdef CONFIG_DM_ETH
948 static int rtl8169_write_hwaddr(struct udevice *dev)
949 {
950         struct eth_pdata *plat = dev_get_platdata(dev);
951         unsigned int i;
952
953         RTL_W8(Cfg9346, Cfg9346_Unlock);
954
955         for (i = 0; i < MAC_ADDR_LEN; i++)
956                 RTL_W8(MAC0 + i, plat->enetaddr[i]);
957
958         RTL_W8(Cfg9346, Cfg9346_Lock);
959
960         return 0;
961 }
962 #endif
963
964 /**************************************************************************
965 INIT - Look for an adapter, this routine's visible to the outside
966 ***************************************************************************/
967
968 #define board_found 1
969 #define valid_link 0
970 static int rtl_init(unsigned long dev_ioaddr, const char *name,
971                     unsigned char *enetaddr)
972 {
973         static int board_idx = -1;
974         int i, rc;
975         int option = -1, Cap10_100 = 0, Cap1000 = 0;
976
977 #ifdef DEBUG_RTL8169
978         printf ("%s\n", __FUNCTION__);
979 #endif
980         ioaddr = dev_ioaddr;
981
982         board_idx++;
983
984         /* point to private storage */
985         tpc = &tpx;
986
987         rc = rtl8169_init_board(ioaddr, name);
988         if (rc)
989                 return rc;
990
991         /* Get MAC address.  FIXME: read EEPROM */
992         for (i = 0; i < MAC_ADDR_LEN; i++)
993                 enetaddr[i] = RTL_R8(MAC0 + i);
994
995 #ifdef DEBUG_RTL8169
996         printf("chipset = %d\n", tpc->chipset);
997         printf("MAC Address");
998         for (i = 0; i < MAC_ADDR_LEN; i++)
999                 printf(":%02x", enetaddr[i]);
1000         putc('\n');
1001 #endif
1002
1003 #ifdef DEBUG_RTL8169
1004         /* Print out some hardware info */
1005         printf("%s: at ioaddr 0x%lx\n", name, ioaddr);
1006 #endif
1007
1008         /* if TBI is not endbled */
1009         if (!(RTL_R8(PHYstatus) & TBI_Enable)) {
1010                 int val = mdio_read(PHY_AUTO_NEGO_REG);
1011
1012                 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx];
1013                 /* Force RTL8169 in 10/100/1000 Full/Half mode. */
1014                 if (option > 0) {
1015 #ifdef DEBUG_RTL8169
1016                         printf("%s: Force-mode Enabled.\n", name);
1017 #endif
1018                         Cap10_100 = 0, Cap1000 = 0;
1019                         switch (option) {
1020                         case _10_Half:
1021                                 Cap10_100 = PHY_Cap_10_Half;
1022                                 Cap1000 = PHY_Cap_Null;
1023                                 break;
1024                         case _10_Full:
1025                                 Cap10_100 = PHY_Cap_10_Full;
1026                                 Cap1000 = PHY_Cap_Null;
1027                                 break;
1028                         case _100_Half:
1029                                 Cap10_100 = PHY_Cap_100_Half;
1030                                 Cap1000 = PHY_Cap_Null;
1031                                 break;
1032                         case _100_Full:
1033                                 Cap10_100 = PHY_Cap_100_Full;
1034                                 Cap1000 = PHY_Cap_Null;
1035                                 break;
1036                         case _1000_Full:
1037                                 Cap10_100 = PHY_Cap_Null;
1038                                 Cap1000 = PHY_Cap_1000_Full;
1039                                 break;
1040                         default:
1041                                 break;
1042                         }
1043                         mdio_write(PHY_AUTO_NEGO_REG, Cap10_100 | (val & 0x1F));        /* leave PHY_AUTO_NEGO_REG bit4:0 unchanged */
1044                         mdio_write(PHY_1000_CTRL_REG, Cap1000);
1045                 } else {
1046 #ifdef DEBUG_RTL8169
1047                         printf("%s: Auto-negotiation Enabled.\n",
1048                                name);
1049 #endif
1050                         /* enable 10/100 Full/Half Mode, leave PHY_AUTO_NEGO_REG bit4:0 unchanged */
1051                         mdio_write(PHY_AUTO_NEGO_REG,
1052                                    PHY_Cap_10_Half | PHY_Cap_10_Full |
1053                                    PHY_Cap_100_Half | PHY_Cap_100_Full |
1054                                    (val & 0x1F));
1055
1056                         /* enable 1000 Full Mode */
1057                         mdio_write(PHY_1000_CTRL_REG, PHY_Cap_1000_Full);
1058
1059                 }
1060
1061                 /* Enable auto-negotiation and restart auto-nigotiation */
1062                 mdio_write(PHY_CTRL_REG,
1063                            PHY_Enable_Auto_Nego | PHY_Restart_Auto_Nego);
1064                 udelay(100);
1065
1066                 /* wait for auto-negotiation process */
1067                 for (i = 10000; i > 0; i--) {
1068                         /* check if auto-negotiation complete */
1069                         if (mdio_read(PHY_STAT_REG) & PHY_Auto_Nego_Comp) {
1070                                 udelay(100);
1071                                 option = RTL_R8(PHYstatus);
1072                                 if (option & _1000bpsF) {
1073 #ifdef DEBUG_RTL8169
1074                                         printf("%s: 1000Mbps Full-duplex operation.\n",
1075                                                name);
1076 #endif
1077                                 } else {
1078 #ifdef DEBUG_RTL8169
1079                                         printf("%s: %sMbps %s-duplex operation.\n",
1080                                                name,
1081                                                (option & _100bps) ? "100" :
1082                                                "10",
1083                                                (option & FullDup) ? "Full" :
1084                                                "Half");
1085 #endif
1086                                 }
1087                                 break;
1088                         } else {
1089                                 udelay(100);
1090                         }
1091                 }               /* end for-loop to wait for auto-negotiation process */
1092
1093         } else {
1094                 udelay(100);
1095 #ifdef DEBUG_RTL8169
1096                 printf
1097                     ("%s: 1000Mbps Full-duplex operation, TBI Link %s!\n",
1098                      name,
1099                      (RTL_R32(TBICSR) & TBILinkOK) ? "OK" : "Failed");
1100 #endif
1101         }
1102
1103
1104         tpc->RxDescArray = rtl_alloc_descs(NUM_RX_DESC);
1105         if (!tpc->RxDescArray)
1106                 return -ENOMEM;
1107
1108         tpc->TxDescArray = rtl_alloc_descs(NUM_TX_DESC);
1109         if (!tpc->TxDescArray)
1110                 return -ENOMEM;
1111
1112         return 0;
1113 }
1114
1115 #ifndef CONFIG_DM_ETH
1116 int rtl8169_initialize(bd_t *bis)
1117 {
1118         pci_dev_t devno;
1119         int card_number = 0;
1120         struct eth_device *dev;
1121         u32 iobase;
1122         int idx=0;
1123
1124         while(1){
1125                 unsigned int region;
1126                 u16 device;
1127                 int err;
1128
1129                 /* Find RTL8169 */
1130                 if ((devno = pci_find_devices(supported, idx++)) < 0)
1131                         break;
1132
1133                 pci_read_config_word(devno, PCI_DEVICE_ID, &device);
1134                 switch (device) {
1135                 case 0x8168:
1136                         region = 2;
1137                         break;
1138
1139                 default:
1140                         region = 1;
1141                         break;
1142                 }
1143
1144                 pci_read_config_dword(devno, PCI_BASE_ADDRESS_0 + (region * 4), &iobase);
1145                 iobase &= ~0xf;
1146
1147                 debug ("rtl8169: REALTEK RTL8169 @0x%x\n", iobase);
1148
1149                 dev = (struct eth_device *)malloc(sizeof *dev);
1150                 if (!dev) {
1151                         printf("Can not allocate memory of rtl8169\n");
1152                         break;
1153                 }
1154
1155                 memset(dev, 0, sizeof(*dev));
1156                 sprintf (dev->name, "RTL8169#%d", card_number);
1157
1158                 dev->priv = (void *)(unsigned long)devno;
1159                 dev->iobase = (int)pci_mem_to_phys(devno, iobase);
1160
1161                 dev->init = rtl_reset;
1162                 dev->halt = rtl_halt;
1163                 dev->send = rtl_send;
1164                 dev->recv = rtl_recv;
1165
1166                 err = rtl_init(dev->iobase, dev->name, dev->enetaddr);
1167                 if (err < 0) {
1168                         printf(pr_fmt("failed to initialize card: %d\n"), err);
1169                         free(dev);
1170                         continue;
1171                 }
1172
1173                 eth_register (dev);
1174
1175                 card_number++;
1176         }
1177         return card_number;
1178 }
1179 #endif
1180
1181 #ifdef CONFIG_DM_ETH
1182 static int rtl8169_eth_probe(struct udevice *dev)
1183 {
1184         struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
1185         struct rtl8169_private *priv = dev_get_priv(dev);
1186         struct eth_pdata *plat = dev_get_platdata(dev);
1187         u32 iobase;
1188         int region;
1189         int ret;
1190
1191         debug("rtl8169: REALTEK RTL8169 @0x%x\n", iobase);
1192         switch (pplat->device) {
1193         case 0x8168:
1194                 region = 2;
1195                 break;
1196         default:
1197                 region = 1;
1198                 break;
1199         }
1200         dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0 + region * 4, &iobase);
1201         iobase &= ~0xf;
1202         priv->iobase = (int)dm_pci_mem_to_phys(dev, iobase);
1203
1204         ret = rtl_init(priv->iobase, dev->name, plat->enetaddr);
1205         if (ret < 0) {
1206                 printf(pr_fmt("failed to initialize card: %d\n"), ret);
1207                 return ret;
1208         }
1209
1210         return 0;
1211 }
1212
1213 static const struct eth_ops rtl8169_eth_ops = {
1214         .start  = rtl8169_eth_start,
1215         .send   = rtl8169_eth_send,
1216         .recv   = rtl8169_eth_recv,
1217         .stop   = rtl8169_eth_stop,
1218         .write_hwaddr = rtl8169_write_hwaddr,
1219 };
1220
1221 static const struct udevice_id rtl8169_eth_ids[] = {
1222         { .compatible = "realtek,rtl8169" },
1223         { }
1224 };
1225
1226 U_BOOT_DRIVER(eth_rtl8169) = {
1227         .name   = "eth_rtl8169",
1228         .id     = UCLASS_ETH,
1229         .of_match = rtl8169_eth_ids,
1230         .probe  = rtl8169_eth_probe,
1231         .ops    = &rtl8169_eth_ops,
1232         .priv_auto_alloc_size = sizeof(struct rtl8169_private),
1233         .platdata_auto_alloc_size = sizeof(struct eth_pdata),
1234 };
1235
1236 U_BOOT_PCI_DEVICE(eth_rtl8169, supported);
1237 #endif