/[gxemul]/trunk/src/devices/dev_le.c
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revision 28 by dpavlin, Mon Oct 8 16:20:26 2007 UTC revision 42 by dpavlin, Mon Oct 8 16:22:32 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2003-2006  Anders Gavare.  All rights reserved.   *  Copyright (C) 2003-2007  Anders Gavare.  All rights reserved.
3   *   *
4   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
5   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *     *  
27   *   *
28   *  $Id: dev_le.c,v 1.51 2006/07/14 16:33:28 debug Exp $   *  $Id: dev_le.c,v 1.56 2007/06/15 19:11:15 debug Exp $
29   *     *  
30   *  LANCE ethernet, as used in DECstations.   *  COMMENT: LANCE ethernet, as used in DECstations
31   *   *
32   *  This is based on "PMAD-AA TURBOchannel Ethernet Module Functional   *  This is based on "PMAD-AA TURBOchannel Ethernet Module Functional
33   *  Specification". I've tried to keep symbol names in this file to what   *  Specification". I've tried to keep symbol names in this file to what
# Line 85  extern int quiet_mode; Line 85  extern int quiet_mode;
85    
86    
87  struct le_data {  struct le_data {
88          int             irq_nr;          struct interrupt irq;
89            int             irq_asserted;
90    
91          uint64_t        buf_start;          uint64_t        buf_start;
92          uint64_t        buf_end;          uint64_t        buf_end;
# Line 289  static void le_tx(struct net *net, struc Line 290  static void le_tx(struct net *net, struc
290                  /*  Start of a new packet:  */                  /*  Start of a new packet:  */
291                  if (stp) {                  if (stp) {
292                          d->tx_packet_len = buflen;                          d->tx_packet_len = buflen;
293                          d->tx_packet = malloc(buflen);                          CHECK_ALLOCATION(d->tx_packet = malloc(buflen));
                         if (d->tx_packet == NULL) {  
                                 fprintf(stderr, "out of memory (1) in "  
                                     "le_tx()\n");  
                                 exit(1);  
                         }  
294                  } else {                  } else {
295                          d->tx_packet_len += buflen;                          d->tx_packet_len += buflen;
296                          d->tx_packet = realloc(d->tx_packet, d->tx_packet_len);                          CHECK_ALLOCATION(d->tx_packet =
297                          if (d->tx_packet == NULL) {                              realloc(d->tx_packet, d->tx_packet_len));
                                 fprintf(stderr, "out of memory (2) in"  
                                     " le_tx()\n");  
                                 exit(1);  
                         }  
298                  }                  }
299    
300                  /*  Copy data from SRAM into the tx packet:  */                  /*  Copy data from SRAM into the tx packet:  */
# Line 531  static void le_register_fix(struct net * Line 523  static void le_register_fix(struct net *
523  }  }
524    
525    
526  /*  DEVICE_TICK(le)
  *  dev_le_tick():  
  */  
 void dev_le_tick(struct cpu *cpu, void *extra)  
527  {  {
528          struct le_data *d = (struct le_data *) extra;          struct le_data *d = extra;
529            int new_assert;
530    
531          le_register_fix(cpu->machine->emul->net, d);          le_register_fix(cpu->machine->emul->net, d);
532    
533          if (d->reg[0] & LE_INTR && d->reg[0] & LE_INEA)          new_assert = (d->reg[0] & LE_INTR) && (d->reg[0] & LE_INEA);
534                  cpu_interrupt(cpu, d->irq_nr);  
535          else          if (new_assert && !d->irq_asserted)
536                  cpu_interrupt_ack(cpu, d->irq_nr);                  INTERRUPT_ASSERT(d->irq);
537            if (d->irq_asserted && !new_assert)
538                    INTERRUPT_DEASSERT(d->irq);
539    
540            d->irq_asserted = new_assert;
541  }  }
542    
543    
# Line 606  void le_register_write(struct le_data *d Line 600  void le_register_write(struct le_data *d
600    
601  DEVICE_ACCESS(le_sram)  DEVICE_ACCESS(le_sram)
602  {  {
603            struct le_data *d = extra;
604          size_t i;          size_t i;
605          int retval;          int retval;
         struct le_data *d = extra;  
606    
607  #ifdef LE_DEBUG  #ifdef LE_DEBUG
608          if (writeflag == MEM_WRITE) {          if (writeflag == MEM_WRITE) {
# Line 651  DEVICE_ACCESS(le_sram) Line 645  DEVICE_ACCESS(le_sram)
645    
646  DEVICE_ACCESS(le)  DEVICE_ACCESS(le)
647  {  {
648            struct le_data *d = extra;
649          uint64_t idata = 0, odata = 0;          uint64_t idata = 0, odata = 0;
         size_t i;  
650          int retval = 1;          int retval = 1;
651          struct le_data *d = extra;          size_t i;
652    
653          if (writeflag == MEM_WRITE)          if (writeflag == MEM_WRITE)
654                  idata = memory_readmax64(cpu, data, len);                  idata = memory_readmax64(cpu, data, len);
# Line 765  do_return: Line 759  do_return:
759   *  dev_le_init():   *  dev_le_init():
760   */   */
761  void dev_le_init(struct machine *machine, struct memory *mem, uint64_t baseaddr,  void dev_le_init(struct machine *machine, struct memory *mem, uint64_t baseaddr,
762          uint64_t buf_start, uint64_t buf_end, int irq_nr, int len)          uint64_t buf_start, uint64_t buf_end, char *irq_path, int len)
763  {  {
764          char *name2;          char *name2;
765          size_t nlen = 55;          size_t nlen = 55;
766          struct le_data *d = malloc(sizeof(struct le_data));          struct le_data *d;
   
         if (d == NULL) {  
                 fprintf(stderr, "out of memory\n");  
                 exit(1);  
         }  
767    
768            CHECK_ALLOCATION(d = malloc(sizeof(struct le_data)));
769          memset(d, 0, sizeof(struct le_data));          memset(d, 0, sizeof(struct le_data));
         d->irq_nr    = irq_nr;  
770    
771          d->sram = malloc(SRAM_SIZE);          INTERRUPT_CONNECT(irq_path, d->irq);
772          if (d->sram == NULL) {  
773                  fprintf(stderr, "out of memory\n");          CHECK_ALLOCATION(d->sram = malloc(SRAM_SIZE));
                 exit(1);  
         }  
774          memset(d->sram, 0, SRAM_SIZE);          memset(d->sram, 0, SRAM_SIZE);
775    
776          /*  TODO:  Are these actually used yet?  */          /*  TODO:  Are these actually used yet?  */
# Line 819  void dev_le_init(struct machine *machine Line 806  void dev_le_init(struct machine *machine
806              DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK              DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK
807              | DM_READS_HAVE_NO_SIDE_EFFECTS, d->sram);              | DM_READS_HAVE_NO_SIDE_EFFECTS, d->sram);
808    
809          name2 = malloc(nlen);          CHECK_ALLOCATION(name2 = malloc(nlen));
         if (name2 == NULL) {  
                 fprintf(stderr, "out of memory in dev_le_init()\n");  
                 exit(1);  
         }  
810          snprintf(name2, nlen, "le [%02x:%02x:%02x:%02x:%02x:%02x]",          snprintf(name2, nlen, "le [%02x:%02x:%02x:%02x:%02x:%02x]",
811              d->rom[0], d->rom[1], d->rom[2], d->rom[3], d->rom[4], d->rom[5]);              d->rom[0], d->rom[1], d->rom[2], d->rom[3], d->rom[4], d->rom[5]);
812    
813          memory_device_register(mem, name2, baseaddr + 0x100000,          memory_device_register(mem, name2, baseaddr + 0x100000,
814              len - 0x100000, dev_le_access, (void *)d, DM_DEFAULT, NULL);              len - 0x100000, dev_le_access, (void *)d, DM_DEFAULT, NULL);
815    
816          machine_add_tickfunction(machine, dev_le_tick, d, LE_TICK_SHIFT, 0.0);          machine_add_tickfunction(machine, dev_le_tick, d, LE_TICK_SHIFT);
817    
818          net_add_nic(machine->emul->net, d, &d->rom[0]);          net_add_nic(machine->emul->net, d, &d->rom[0]);
819  }  }
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