/[gxemul]/trunk/src/devices/dev_8250.c
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Diff of /trunk/src/devices/dev_8250.c

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revision 18 by dpavlin, Mon Oct 8 16:19:11 2007 UTC revision 28 by dpavlin, Mon Oct 8 16:20:26 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2004-2005  Anders Gavare.  All rights reserved.   *  Copyright (C) 2004-2006  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_8250.c,v 1.17 2005/10/26 14:37:03 debug Exp $   *  $Id: dev_8250.c,v 1.24 2006/07/21 16:55:41 debug Exp $
29   *     *  
30   *  8250 serial controller.   *  8250 serial controller.
31   *   *
# Line 45  Line 45 
45    
46    
47  struct dev_8250_data {  struct dev_8250_data {
         int             reg[8];  
   
48          int             console_handle;          int             console_handle;
49            char            *name;
50    
51          int             irq_enable;          int             irq_enable;
52          int             irqnr;          int             irqnr;
53            int             in_use;
54          int             addrmult;          int             addrmult;
55    
56            int             reg[8];
57    
58          int             dlab;           /*  Divisor Latch Access bit  */          int             dlab;           /*  Divisor Latch Access bit  */
59          int             divisor;          int             divisor;
60          int             databits;          int             databits;
# Line 61  struct dev_8250_data { Line 63  struct dev_8250_data {
63  };  };
64    
65  #define DEV_8250_LENGTH         8  #define DEV_8250_LENGTH         8
66    #define DEV_8250_TICKSHIFT      15
67    
68    
69  /*  DEVICE_TICK(8250)
  *  dev_8250_tick():  
  *  
  */  
 void dev_8250_tick(struct cpu *cpu, void *extra)  
70  {  {
71  #if 0  #if 0
72          /*  This stuff works for 16550.  TODO for 8250  */          /*  This stuff works for 16550.  TODO for 8250  */
# Line 97  void dev_8250_tick(struct cpu *cpu, void Line 96  void dev_8250_tick(struct cpu *cpu, void
96  }  }
97    
98    
99  /*  DEVICE_ACCESS(8250)
  *  dev_8250_access():  
  */  
 int dev_8250_access(struct cpu *cpu, struct memory *mem, uint64_t relative_addr,  
         unsigned char *data, size_t len, int writeflag, void *extra)  
100  {  {
101          uint64_t idata = 0, odata = 0;          uint64_t idata = 0, odata = 0;
102          struct dev_8250_data *d = extra;          struct dev_8250_data *d = extra;
# Line 111  int dev_8250_access(struct cpu *cpu, str Line 106  int dev_8250_access(struct cpu *cpu, str
106    
107          relative_addr /= d->addrmult;          relative_addr /= d->addrmult;
108    
109          if (writeflag == MEM_WRITE && relative_addr == 0)          if (writeflag == MEM_WRITE && relative_addr == 0) {
110                  console_putchar(d->console_handle, idata);                  console_putchar(d->console_handle, idata);
111          else          } else if (writeflag == MEM_READ && relative_addr == 5) {
         if (writeflag == MEM_READ && relative_addr == 5)  
112                  odata = 64 + 32;                  odata = 64 + 32;
113          else {          } else {
114  #if 0  #if 0
115                  if (writeflag == MEM_WRITE)                  if (writeflag == MEM_WRITE)
116                          fatal("[ 8250: write addr=0x%02x idata = 0x%02x ]\n",                          fatal("[ 8250: write addr=0x%02x idata = 0x%02x ]\n",
# Line 133  int dev_8250_access(struct cpu *cpu, str Line 127  int dev_8250_access(struct cpu *cpu, str
127  }  }
128    
129    
130  /*  DEVINIT(8250)
  *  devinit_8250():  
  */  
 int devinit_8250(struct devinit *devinit)  
131  {  {
132            size_t nlen;
133            char *name;
134          struct dev_8250_data *d;          struct dev_8250_data *d;
135    
136          d = malloc(sizeof(struct dev_8250_data));          d = malloc(sizeof(struct dev_8250_data));
# Line 146  int devinit_8250(struct devinit *devinit Line 139  int devinit_8250(struct devinit *devinit
139                  exit(1);                  exit(1);
140          }          }
141          memset(d, 0, sizeof(struct dev_8250_data));          memset(d, 0, sizeof(struct dev_8250_data));
142          d->irqnr = devinit->irq_nr;          d->irqnr    = devinit->irq_nr;
143          d->addrmult = devinit->addr_mult;          d->addrmult = devinit->addr_mult;
144          d->console_handle = console_start_slave(devinit->machine, "console");          d->in_use   = devinit->in_use;
145          d->dlab = 0;          d->dlab     = 0;
146          d->divisor  = 115200 / 9600;          d->divisor  = 115200 / 9600;
147          d->databits = 8;          d->databits = 8;
148          d->parity   = 'N';          d->parity   = 'N';
149          d->stopbits = "1";          d->stopbits = "1";
150            d->name = devinit->name2 != NULL? devinit->name2 : "";
151            d->console_handle =
152                console_start_slave(devinit->machine, devinit->name2 != NULL?
153                devinit->name2 : devinit->name, d->in_use);
154    
155            nlen = strlen(devinit->name) + 10;
156            if (devinit->name2 != NULL)
157                    nlen += strlen(devinit->name2);
158            name = malloc(nlen);
159            if (name == NULL) {
160                    fprintf(stderr, "out of memory\n");
161                    exit(1);
162            }
163            if (devinit->name2 != NULL && devinit->name2[0])
164                    snprintf(name, nlen, "%s [%s]", devinit->name, devinit->name2);
165            else
166                    snprintf(name, nlen, "%s", devinit->name);
167    
168          memory_device_register(devinit->machine->memory, devinit->name,          memory_device_register(devinit->machine->memory, name,
169              devinit->addr, DEV_8250_LENGTH * devinit->addr_mult,              devinit->addr, DEV_8250_LENGTH * devinit->addr_mult,
170              dev_8250_access, d, MEM_DEFAULT, NULL);              dev_8250_access, d, DM_DEFAULT, NULL);
171          machine_add_tickfunction(devinit->machine, dev_8250_tick, d, 14);          machine_add_tickfunction(devinit->machine, dev_8250_tick, d,
172                DEV_8250_TICKSHIFT, 0.0);
173    
174          return 1;          return 1;
175  }  }
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