/[gxemul]/trunk/src/devices/dev_pccmos.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 18 by dpavlin, Mon Oct 8 16:19:11 2007 UTC revision 42 by dpavlin, Mon Oct 8 16:22:32 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2005  Anders Gavare.  All rights reserved.   *  Copyright (C) 2005-2007  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_pccmos.c,v 1.8 2005/10/26 14:37:04 debug Exp $   *  $Id: dev_pccmos.c,v 1.31 2007/06/15 19:57:33 debug Exp $
29   *     *  
30   *  PC CMOS/RTC device.   *  COMMENT: PC CMOS/RTC device (ISA ports 0x70 and 0x71)
31   *   *
32   *  The main point of this device is to be a "PC style wrapper" for accessing   *  The main point of this device is to be a "PC style wrapper" for accessing
33   *  the MC146818 (the RTC). In most other respects, this device is bogus, and   *  the MC146818 (the RTC). In most other respects, this device is bogus, and
# Line 56  struct pccmos_data { Line 56  struct pccmos_data {
56  };  };
57    
58    
59  /*  DEVICE_ACCESS(pccmos)
  *  dev_pccmos_access():  
  */  
 int dev_pccmos_access(struct cpu *cpu, struct memory *mem,  
         uint64_t relative_addr, unsigned char *data, size_t len,  
         int writeflag, void *extra)  
60  {  {
61          struct pccmos_data *d = (struct pccmos_data *) extra;          struct pccmos_data *d = extra;
62          uint64_t idata = 0, odata = 0;          uint64_t idata = 0, odata = 0;
63          unsigned char b = 0;          unsigned char b = 0;
64            int r = 1;
65    
66          if (writeflag == MEM_WRITE)          if (writeflag == MEM_WRITE)
67                  b = idata = memory_readmax64(cpu, data, len);                  b = idata = memory_readmax64(cpu, data, len);
# Line 79  int dev_pccmos_access(struct cpu *cpu, s Line 75  int dev_pccmos_access(struct cpu *cpu, s
75                  if (writeflag == MEM_WRITE) {                  if (writeflag == MEM_WRITE) {
76                          d->select = idata;                          d->select = idata;
77                          if (idata <= 0x0d) {                          if (idata <= 0x0d) {
78                                  cpu->memory_rw(cpu, cpu->mem,                                  r = cpu->memory_rw(cpu, cpu->mem,
79                                      PCCMOS_MC146818_FAKE_ADDR, &b, 1,                                      PCCMOS_MC146818_FAKE_ADDR, &b, 1,
80                                      MEM_WRITE, PHYSICAL);                                      MEM_WRITE, PHYSICAL);
81                          }                          }
# Line 88  int dev_pccmos_access(struct cpu *cpu, s Line 84  int dev_pccmos_access(struct cpu *cpu, s
84          } else {          } else {
85                  if (d->select <= 0x0d) {                  if (d->select <= 0x0d) {
86                          if (writeflag == MEM_WRITE) {                          if (writeflag == MEM_WRITE) {
87                                  cpu->memory_rw(cpu, cpu->mem,                                  r = cpu->memory_rw(cpu, cpu->mem,
88                                      PCCMOS_MC146818_FAKE_ADDR + 1, &b, 1,                                      PCCMOS_MC146818_FAKE_ADDR + 1, &b, 1,
89                                      MEM_WRITE, PHYSICAL);                                      MEM_WRITE, PHYSICAL);
90                          } else {                          } else {
91                                  cpu->memory_rw(cpu, cpu->mem,                                  r = cpu->memory_rw(cpu, cpu->mem,
92                                      PCCMOS_MC146818_FAKE_ADDR + 1, &b, 1,                                      PCCMOS_MC146818_FAKE_ADDR + 1, &b, 1,
93                                      MEM_READ, PHYSICAL);                                      MEM_READ, PHYSICAL);
94                                  odata = b;                                  odata = b;
# Line 105  int dev_pccmos_access(struct cpu *cpu, s Line 101  int dev_pccmos_access(struct cpu *cpu, s
101                  }                  }
102          }          }
103    
104            if (r == 0)
105                    fatal("[ pccmos: memory_rw() error! ]\n");
106    
107          if (writeflag == MEM_READ)          if (writeflag == MEM_READ)
108                  memory_writemax64(cpu, data, len, odata);                  memory_writemax64(cpu, data, len, odata);
109    
# Line 112  int dev_pccmos_access(struct cpu *cpu, s Line 111  int dev_pccmos_access(struct cpu *cpu, s
111  }  }
112    
113    
114  /*  DEVINIT(pccmos)
  *  devinit_pccmos():  
  */  
 int devinit_pccmos(struct devinit *devinit)  
115  {  {
116          struct pccmos_data *d = malloc(sizeof(struct pccmos_data));          int type = MC146818_PC_CMOS, len = DEV_PCCMOS_LENGTH;
117          int irq_nr, type = MC146818_PC_CMOS, len = DEV_PCCMOS_LENGTH;          struct pccmos_data *d;
118    
119          if (d == NULL) {          CHECK_ALLOCATION(d = malloc(sizeof(struct pccmos_data)));
                 fprintf(stderr, "out of memory\n");  
                 exit(1);  
         }  
120          memset(d, 0, sizeof(struct pccmos_data));          memset(d, 0, sizeof(struct pccmos_data));
121    
         /*  
          *  Different machines use different IRQ schemes.  
          */  
122          switch (devinit->machine->machine_type) {          switch (devinit->machine->machine_type) {
123          case MACHINE_CATS:          case MACHINE_CATS:
124                  irq_nr = 32 + 8;          case MACHINE_NETWINDER:
125                  type = MC146818_CATS;                  type = MC146818_CATS;
126                  d->ram[0x48] = 20;              /*  century  */                  d->ram[0x48] = 20;              /*  century  */
127                  len = DEV_PCCMOS_LENGTH * 2;                  len = DEV_PCCMOS_LENGTH * 2;
128                  break;                  break;
129          case MACHINE_X86:          case MACHINE_ALGOR:
130                  irq_nr = 16;    /*  "No" irq  */                  type = MC146818_ALGOR;
131                    break;
132            case MACHINE_ARC:
133                    fatal("\nARC pccmos: TODO\n\n");
134                    type = MC146818_ALGOR;
135                    break;
136            case MACHINE_EVBMIPS:
137                    /*  Malta etc.  */
138                    type = MC146818_ALGOR;
139                    break;
140            case MACHINE_QEMU_MIPS:
141            case MACHINE_COBALT:
142            case MACHINE_BEBOX:
143            case MACHINE_PREP:
144            case MACHINE_MVMEPPC:
145            case MACHINE_ALPHA:
146                  break;                  break;
147          default:fatal("devinit_pccmos(): unimplemented machine type"          default:fatal("devinit_pccmos(): unimplemented machine type"
148                      " %i\n", devinit->machine->machine_type);                      " %i\n", devinit->machine->machine_type);
# Line 146  int devinit_pccmos(struct devinit *devin Line 151  int devinit_pccmos(struct devinit *devin
151    
152          memory_device_register(devinit->machine->memory, devinit->name,          memory_device_register(devinit->machine->memory, devinit->name,
153              devinit->addr, len, dev_pccmos_access, (void *)d,              devinit->addr, len, dev_pccmos_access, (void *)d,
154              MEM_DEFAULT, NULL);              DM_DEFAULT, NULL);
155    
156          dev_mc146818_init(devinit->machine, devinit->machine->memory,          dev_mc146818_init(devinit->machine, devinit->machine->memory,
157              PCCMOS_MC146818_FAKE_ADDR, irq_nr, type, 1);              PCCMOS_MC146818_FAKE_ADDR, devinit->interrupt_path, type, 1);
158    
159          return 1;          return 1;
160  }  }
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