package/uboot-ifxmips/files/drivers/ifx_sw.c

   1 /*
   2  * DANUBE internal switch ethernet driver.
   3  *
   4  * (C) Copyright 2003
   5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26
  27 #include <common.h>
  28
  29 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) \
  30         && defined(CONFIG_DANUBE_SWITCH)
  31
  32 #include <malloc.h>
  33 #include <net.h>
  34 #include <asm/danube.h>
  35 #include <asm/addrspace.h>
  36 #include <asm/pinstrap.h>
  37
  38 #define MII_MODE 1
  39 #define REV_MII_MODE 2
  40
  41 #define TX_CHAN_NO   7
  42 #define RX_CHAN_NO   6
  43
  44 #define NUM_RX_DESC     PKTBUFSRX
  45 #define NUM_TX_DESC     8
  46 #define MAX_PACKET_SIZE         1536
  47 #define TOUT_LOOP       100
  48 #define PHY0_ADDR       1 /*fixme: set the correct value here*/
  49
  50 #define DMA_WRITE_REG(reg, value) *((volatile u32 *)reg) = (u32)value
  51 #define DMA_READ_REG(reg, value)    value = (u32)*((volatile u32*)reg)
  52
  53 #define SW_WRITE_REG(reg, value)  *((volatile u32*)reg) = (u32)value
  54 #define SW_READ_REG(reg, value)   value = (u32)*((volatile u32*)reg)
  55
  56 #define TANTOS_CHIP_ID 0x2599
  57
  58 typedef struct
  59 {
  60         union
  61         {
  62                 struct
  63                 {
  64                         volatile u32 OWN        :1;
  65                         volatile u32 C          :1;
  66                         volatile u32 Sop        :1;
  67                         volatile u32 Eop        :1;
  68                         volatile u32 reserved   :3;
  69                         volatile u32 Byteoffset :2;
  70                         volatile u32 reserve    :7;
  71                         volatile u32 DataLen    :16;
  72                 }field;
  73
  74                 volatile u32 word;
  75         }status;
  76
  77         volatile u32 DataPtr;
  78 } danube_rx_descriptor_t;
  79
  80 typedef struct
  81 {
  82         union
  83         {
  84                 struct
  85                 {
  86                         volatile u32 OWN        :1;
  87                         volatile u32 C          :1;
  88                         volatile u32 Sop        :1;
  89                         volatile u32 Eop        :1;
  90                         volatile u32 Byteoffset :5;
  91                         volatile u32 reserved   :7;
  92                         volatile u32 DataLen    :16;
  93                 }field;
  94
  95                 volatile u32 word;
  96         }status;
  97
  98         volatile u32 DataPtr;
  99 } danube_tx_descriptor_t;
 100
 101
 102
 103
 104 static danube_rx_descriptor_t rx_des_ring[NUM_RX_DESC] __attribute__ ((aligned(8)));
 105 static danube_tx_descriptor_t tx_des_ring[NUM_TX_DESC] __attribute__ ((aligned(8)));
 106 static int tx_num, rx_num;
 107
 108 int danube_switch_init(struct eth_device *dev, bd_t * bis);
 109 int danube_switch_send(struct eth_device *dev, volatile void *packet,int length);
 110 int danube_switch_recv(struct eth_device *dev);
 111 void danube_switch_halt(struct eth_device *dev);
 112 static void danube_init_switch_chip(int mode);
 113 static void danube_dma_init(void);
 114
 115
 116
 117 int danube_switch_initialize(bd_t * bis)
 118 {
 119         struct eth_device *dev;
 120         unsigned short chipid;
 121
 122 #if 0
 123         printf("Entered danube_switch_initialize()\n");
 124 #endif
 125
 126         if (!(dev = (struct eth_device *) malloc (sizeof *dev)))
 127         {
 128                 printf("Failed to allocate memory\n");
 129                 return 0;
 130         }
 131         memset(dev, 0, sizeof(*dev));
 132
 133         danube_dma_init();
 134         danube_init_switch_chip(REV_MII_MODE);
 135
 136 #ifdef CLK_OUT2_25MHZ
 137         *DANUBE_GPIO_P0_DIR=0x0000ae78;
 138         *DANUBE_GPIO_P0_ALTSEL0=0x00008078;
 139         //joelin for Mii-1       *DANUBE_GPIO_P0_ALTSEL1=0x80000080;
 140         *DANUBE_GPIO_P0_ALTSEL1=0x80000000; //joelin for Mii-1
 141         *DANUBE_CGU_IFCCR=0x00400010;
 142         *DANUBE_GPIO_P0_OD=0x0000ae78;
 143 #endif
 144
 145         /*patch for 6996*/
 146
 147         *DANUBE_RCU_RST_REQ |=1;
 148         mdelay(200);
 149         *DANUBE_RCU_RST_REQ &=(unsigned long)~1;
 150         mdelay(1);
 151         /*while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 152         *DANUBE_PPE_ETOP_MDIO_ACC =0x80123602;
 153         */
 154         /*while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 155         *DANUBE_PPE_ETOP_MDIO_ACC =0x80123602;
 156         */
 157         /***************/
 158         sprintf(dev->name, "danube Switch");
 159         dev->init = danube_switch_init;
 160         dev->halt = danube_switch_halt;
 161         dev->send = danube_switch_send;
 162         dev->recv = danube_switch_recv;
 163
 164         eth_register(dev);
 165
 166         while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 167         *DANUBE_PPE_ETOP_MDIO_ACC =0xc1010000;
 168         while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 169         chipid = (unsigned short)(*DANUBE_PPE_ETOP_MDIO_ACC & 0xffff);
 170
 171         if (chipid != TANTOS_CHIP_ID) // not tantos switch.
 172         {
 173                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 174                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8001840F;
 175                 while((*DANUBE_PPE_ETOP_MDIO_ACC)&0x80000000);
 176                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8003840F;
 177                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 178                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8005840F;
 179                 //while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 180                 //*DANUBE_PPE_ETOP_MDIO_ACC =0x8006840F;
 181                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 182                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8007840F;
 183                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 184                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8008840F;
 185                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 186                 *DANUBE_PPE_ETOP_MDIO_ACC =0x8001840F;
 187                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 188                 *DANUBE_PPE_ETOP_MDIO_ACC =0x80123602;
 189 #ifdef CLK_OUT2_25MHZ
 190                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 191                 *DANUBE_PPE_ETOP_MDIO_ACC =0x80334000;
 192 #endif
 193         }
 194         else // Tantos switch chip
 195         {
 196                 //printf("Tantos Switch detected!!\n\r");
 197
 198                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 199                 *DANUBE_PPE_ETOP_MDIO_ACC =0x80a10004;
 200
 201                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 202                 *DANUBE_PPE_ETOP_MDIO_ACC =0x80c10004;
 203
 204                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 205                 *DANUBE_PPE_ETOP_MDIO_ACC =0x80f50773;
 206
 207                 /* Software workaround. */
 208                 /* PHY reset from P0 to P4. */
 209                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 210
 211                 mdelay(1);
 212                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81218000;
 213                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 214                 mdelay(1);
 215                 /* P0 */
 216                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81200400;
 217                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 218                 mdelay(1);
 219                 /* P1 */
 220                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81200420;
 221                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 222                 mdelay(1);
 223                 /* P2 */
 224                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81200440;
 225                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 226                 mdelay(1);
 227                 /* P3 */
 228                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81200460;
 229                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 230                 mdelay(1);
 231                 /* p4 */
 232                 *DANUBE_PPE_ETOP_MDIO_ACC =0x81200480;
 233                 while(*DANUBE_PPE_ETOP_MDIO_ACC&0x80000000);
 234                 mdelay(1);
 235         }
 236
 237         return 1;
 238 }
 239
 240 int danube_switch_init(struct eth_device *dev, bd_t * bis)
 241 {
 242         int i;
 243
 244         tx_num=0;
 245         rx_num=0;
 246
 247         /* Reset DMA */
 248 //      serial_puts("i \n\0");
 249
 250         *DANUBE_DMA_CS=RX_CHAN_NO;
 251         *DANUBE_DMA_CCTRL=0x2;/*fix me, need to reset this channel first?*/
 252         *DANUBE_DMA_CPOLL= 0x80000040;
 253         /*set descriptor base*/
 254         *DANUBE_DMA_CDBA=(u32)rx_des_ring;
 255         *DANUBE_DMA_CDLEN=NUM_RX_DESC;
 256         *DANUBE_DMA_CIE = 0;
 257         *DANUBE_DMA_CCTRL=0x30000;
 258
 259         *DANUBE_DMA_CS=TX_CHAN_NO;
 260         *DANUBE_DMA_CCTRL=0x2;/*fix me, need to reset this channel first?*/
 261         *DANUBE_DMA_CPOLL= 0x80000040;
 262         *DANUBE_DMA_CDBA=(u32)tx_des_ring;
 263         *DANUBE_DMA_CDLEN=NUM_TX_DESC;
 264         *DANUBE_DMA_CIE = 0;
 265         *DANUBE_DMA_CCTRL=0x30100;
 266
 267         for(i=0;i < NUM_RX_DESC; i++)
 268         {
 269                 danube_rx_descriptor_t * rx_desc = KSEG1ADDR(&rx_des_ring[i]);
 270                 rx_desc->status.word=0;
 271                 rx_desc->status.field.OWN=1;
 272                 rx_desc->status.field.DataLen=PKTSIZE_ALIGN;   /* 1536  */
 273                 rx_desc->DataPtr=(u32)KSEG1ADDR(NetRxPackets[i]);
 274         }
 275
 276         for(i=0;i < NUM_TX_DESC; i++)
 277         {
 278                 danube_tx_descriptor_t * tx_desc = KSEG1ADDR(&tx_des_ring[i]);
 279                 memset(tx_desc, 0, sizeof(tx_des_ring[0]));
 280         }
 281                 /* turn on DMA rx & tx channel
 282                 */
 283         *DANUBE_DMA_CS=RX_CHAN_NO;
 284         *DANUBE_DMA_CCTRL|=1;/*reset and turn on the channel*/
 285
 286         return 0;
 287 }
 288
 289 void danube_switch_halt(struct eth_device *dev)
 290 {
 291         int i;
 292         for(i=0;i<8;i++)
 293         {
 294                 *DANUBE_DMA_CS=i;
 295                 *DANUBE_DMA_CCTRL&=~1;/*stop the dma channel*/
 296         }
 297 //      udelay(1000000);
 298 }
 299
 300 int danube_switch_send(struct eth_device *dev, volatile void *packet,int length)
 301 {
 302
 303         int i;
 304         int res = -1;
 305
 306         danube_tx_descriptor_t * tx_desc= KSEG1ADDR(&tx_des_ring[tx_num]);
 307
 308         if (length <= 0)
 309         {
 310                 printf ("%s: bad packet size: %d\n", dev->name, length);
 311                 goto Done;
 312         }
 313
 314         for(i=0; tx_desc->status.field.OWN==1; i++)
 315         {
 316                 if(i>=TOUT_LOOP)
 317                 {
 318                         printf("NO Tx Descriptor...");
 319                         goto Done;
 320                 }
 321         }
 322
 323         //serial_putc('s');
 324
 325         tx_desc->status.field.Sop=1;
 326         tx_desc->status.field.Eop=1;
 327         tx_desc->status.field.C=0;
 328         tx_desc->DataPtr = (u32)KSEG1ADDR(packet);
 329         if(length<60)
 330                 tx_desc->status.field.DataLen = 60;
 331         else
 332                 tx_desc->status.field.DataLen = (u32)length;
 333
 334         asm("SYNC");
 335         tx_desc->status.field.OWN=1;
 336
 337         res=length;
 338         tx_num++;
 339         if(tx_num==NUM_TX_DESC) tx_num=0;
 340         *DANUBE_DMA_CS=TX_CHAN_NO;
 341
 342         if(!(*DANUBE_DMA_CCTRL & 1))
 343                 *DANUBE_DMA_CCTRL|=1;
 344
 345 Done:
 346         return res;
 347 }
 348
 349 int danube_switch_recv(struct eth_device *dev)
 350 {
 351         int length  = 0;
 352         danube_rx_descriptor_t * rx_desc;
 353
 354         for (;;)
 355         {
 356                 rx_desc = KSEG1ADDR(&rx_des_ring[rx_num]);
 357
 358                 if ((rx_desc->status.field.C == 0) || (rx_desc->status.field.OWN == 1))
 359                 {
 360                         break;
 361                 }
 362
 363                 length = rx_desc->status.field.DataLen;
 364                 if (length)
 365                 {
 366                         NetReceive((void*)KSEG1ADDR(NetRxPackets[rx_num]), length - 4);
 367                 //      serial_putc('*');
 368                 }
 369                 else
 370                 {
 371                         printf("Zero length!!!\n");
 372                 }
 373
 374                 rx_desc->status.field.Sop=0;
 375                 rx_desc->status.field.Eop=0;
 376                 rx_desc->status.field.C=0;
 377                 rx_desc->status.field.DataLen=PKTSIZE_ALIGN;
 378                 rx_desc->status.field.OWN=1;
 379                 rx_num++;
 380                 if(rx_num==NUM_RX_DESC) rx_num=0;
 381
 382         }
 383
 384         return length;
 385 }
 386
 387
 388 static void danube_init_switch_chip(int mode)
 389 {
 390         /*get and set mac address for MAC*/
 391         char *tmp;
 392         tmp = getenv ("ethaddr");
 393         if (NULL == tmp) {
 394                 printf("Can't get environment ethaddr!!!\n");
 395         //      return NULL;
 396         } else {
 397                 printf("ethaddr=%s\n", tmp);
 398         }
 399         *DANUBE_PMU_PWDCR = *DANUBE_PMU_PWDCR & 0xFFFFEFDF;
 400         *DANUBE_PPE32_ETOP_MDIO_CFG &= ~0x6;
 401         *DANUBE_PPE32_ENET_MAC_CFG = 0x187;
 402
 403         // turn on port0, set to rmii and turn off port1.
 404         if (mode==REV_MII_MODE)
 405         {
 406                 *DANUBE_PPE32_ETOP_CFG = (*DANUBE_PPE32_ETOP_CFG & 0xfffffffc) | 0x0000000a;
 407         }
 408         else if (mode == MII_MODE)
 409         {
 410                 *DANUBE_PPE32_ETOP_CFG = (*DANUBE_PPE32_ETOP_CFG & 0xfffffffc) | 0x00000008;
 411         }
 412
 413         *DANUBE_PPE32_ETOP_IG_PLEN_CTRL = 0x4005ee; // set packetlen.
 414         *ENET_MAC_CFG |= 1<<11; /*enable the crc*/
 415         return;
 416 }
 417
 418
 419 static void danube_dma_init(void)
 420 {
 421 //      serial_puts("d \n\0");
 422
 423         *DANUBE_PMU_PWDCR &=~(1<<DANUBE_PMU_DMA_SHIFT);/*enable DMA from PMU*/
 424         /* Reset DMA */
 425         *DANUBE_DMA_CTRL|=1;
 426         *DANUBE_DMA_IRNEN=0;/*disable all the interrupts first*/
 427
 428         /* Clear Interrupt Status Register */
 429         *DANUBE_DMA_IRNCR=0xfffff;
 430         /*disable all the dma interrupts*/
 431         *DANUBE_DMA_IRNEN=0;
 432         /*disable channel 0 and channel 1 interrupts*/
 433
 434         *DANUBE_DMA_CS=RX_CHAN_NO;
 435         *DANUBE_DMA_CCTRL=0x2;/*fix me, need to reset this channel first?*/
 436         *DANUBE_DMA_CPOLL= 0x80000040;
 437         /*set descriptor base*/
 438         *DANUBE_DMA_CDBA=(u32)rx_des_ring;
 439         *DANUBE_DMA_CDLEN=NUM_RX_DESC;
 440         *DANUBE_DMA_CIE = 0;
 441         *DANUBE_DMA_CCTRL=0x30000;
 442
 443         *DANUBE_DMA_CS=TX_CHAN_NO;
 444         *DANUBE_DMA_CCTRL=0x2;/*fix me, need to reset this channel first?*/
 445         *DANUBE_DMA_CPOLL= 0x80000040;
 446         *DANUBE_DMA_CDBA=(u32)tx_des_ring;
 447         *DANUBE_DMA_CDLEN=NUM_TX_DESC;
 448         *DANUBE_DMA_CIE = 0;
 449         *DANUBE_DMA_CCTRL=0x30100;
 450         /*enable the poll function and set the poll counter*/
 451         //*DANUBE_DMA_CPOLL=DANUBE_DMA_POLL_EN | (DANUBE_DMA_POLL_COUNT<<4);
 452         /*set port properties, enable endian conversion for switch*/
 453         *DANUBE_DMA_PS=0;
 454         *DANUBE_DMA_PCTRL|=0xf<<8;/*enable 32 bit endian conversion*/
 455
 456         return;
 457 }
 458
 459 #endif