/[gxemul]/trunk/src/devices/dev_openpic.c
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trunk/src/devices/dev_gc.c revision 44 by dpavlin, Mon Oct 8 16:22:56 2007 UTC trunk/src/devices/dev_openpic.c revision 64 by dpavlin, Sat Oct 13 15:43:48 2007 UTC
# Line 24  Line 24 
24   *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF   *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *     *  
27   *  $Id: dev_gc.c,v 1.14 2007/09/11 21:42:52 debug Exp $   *  $Id: dev_openpic.c,v 1.14 2007/09/11 21:42:52 debug Exp $
28   *     *  
29   *  COMMENT: Grand Central Interrupt controller (used by MacPPC)   *  COMMENT: OpenPIC Interrupt controller (used by sandpoint ppc)
30     *  based on dev_gc.c
31   */   */
32    
33  #include <stdio.h>  #include <stdio.h>
# Line 40  Line 41 
41  #include "misc.h"  #include "misc.h"
42    
43    
44  #define DEV_GC_LENGTH           0x100  #define DEV_OPENPIC_LENGTH              0x40000
45    
46  struct gc_data {  struct openpic_data {
47          struct interrupt cpu_irq;          struct interrupt cpu_irq;
48    
49          uint32_t        status_hi;          uint32_t        status_hi;
# Line 52  struct gc_data { Line 53  struct gc_data {
53  };  };
54    
55    
56  void gc_hi_interrupt_assert(struct interrupt *interrupt)  void openpic_hi_interrupt_assert(struct interrupt *interrupt)
57  {  {
58          struct gc_data *d = interrupt->extra;          struct openpic_data *d = interrupt->extra;
59          d->status_hi |= interrupt->line;          d->status_hi |= interrupt->line;
60          if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)          if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)
61                  INTERRUPT_ASSERT(d->cpu_irq);                  INTERRUPT_ASSERT(d->cpu_irq);
62  }  }
63  void gc_hi_interrupt_deassert(struct interrupt *interrupt)  void openpic_hi_interrupt_deassert(struct interrupt *interrupt)
64  {  {
65          struct gc_data *d = interrupt->extra;          struct openpic_data *d = interrupt->extra;
66          d->status_hi &= ~interrupt->line;          d->status_hi &= ~interrupt->line;
67          if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi))          if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi))
68                  INTERRUPT_DEASSERT(d->cpu_irq);                  INTERRUPT_DEASSERT(d->cpu_irq);
69  }  }
70  void gc_lo_interrupt_assert(struct interrupt *interrupt)  void openpic_lo_interrupt_assert(struct interrupt *interrupt)
71  {  {
72          struct gc_data *d = interrupt->extra;          struct openpic_data *d = interrupt->extra;
73          d->status_lo |= interrupt->line;          d->status_lo |= interrupt->line;
74          if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)          if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)
75                  INTERRUPT_ASSERT(d->cpu_irq);                  INTERRUPT_ASSERT(d->cpu_irq);
76  }  }
77  void gc_lo_interrupt_deassert(struct interrupt *interrupt)  void openpic_lo_interrupt_deassert(struct interrupt *interrupt)
78  {  {
79          struct gc_data *d = interrupt->extra;          struct openpic_data *d = interrupt->extra;
80          d->status_lo &= ~interrupt->line;          d->status_lo &= ~interrupt->line;
81          if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi))          if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi))
82                  INTERRUPT_DEASSERT(d->cpu_irq);                  INTERRUPT_DEASSERT(d->cpu_irq);
83  }  }
84    
85    
86  DEVICE_ACCESS(gc)  DEVICE_ACCESS(openpic)
87  {  {
88          struct gc_data *d = extra;  //      struct openpic_data *d = extra;
89          uint64_t idata = 0, odata = 0;          uint64_t idata = 0, odata = 0;
90    
91          if (writeflag == MEM_WRITE)          if (writeflag == MEM_WRITE)
# Line 103  DEVICE_ACCESS(gc) Line 104  DEVICE_ACCESS(gc)
104  #define INT_LEVEL_REG_L  (interrupt_reg + 0x1c)  #define INT_LEVEL_REG_L  (interrupt_reg + 0x1c)
105  #endif  #endif
106    
107    #if 0
108          case 0x10:          case 0x10:
109                  if (writeflag == MEM_READ)                  if (writeflag == MEM_READ)
110                          odata = d->status_hi & d->enable_hi;                          odata = d->status_hi & d->enable_hi;
# Line 189  DEVICE_ACCESS(gc) Line 191  DEVICE_ACCESS(gc)
191          case 0x2c:          case 0x2c:
192                  /*  Avoid a debug message.  */                  /*  Avoid a debug message.  */
193                  break;                  break;
194    #endif
195          default:if (writeflag == MEM_WRITE) {          default:if (writeflag == MEM_WRITE) {
196                          fatal("[ gc: unimplemented write to "                          fatal("[ openpic: unimplemented write to "
197                              "offset 0x%x: data=0x%x ]\n", (int)                              "offset 0x%x: data=0x%x ]\n", (int)
198                              relative_addr, (int)idata);                              relative_addr, (int)idata);
199                  } else {                  } else {
200                          fatal("[ gc: unimplemented read from "                          fatal("[ openpic: unimplemented read from "
201                              "offset 0x%x ]\n", (int)relative_addr);                              "offset 0x%x ]\n", (int)relative_addr);
202                  }                  }
203          }          }
# Line 207  DEVICE_ACCESS(gc) Line 209  DEVICE_ACCESS(gc)
209  }  }
210    
211    
212  DEVINIT(gc)  DEVINIT(openpic)
213  {  {
214          struct gc_data *d;          struct openpic_data *d;
215          int i;          int i;
216    
217          CHECK_ALLOCATION(d = malloc(sizeof(struct gc_data)));          CHECK_ALLOCATION(d = malloc(sizeof(struct openpic_data)));
218          memset(d, 0, sizeof(struct gc_data));          memset(d, 0, sizeof(struct openpic_data));
219    
220          /*  Connect to the CPU interrupt pin:  */          /*  Connect to the CPU interrupt pin:  */
221          INTERRUPT_CONNECT(devinit->interrupt_path, d->cpu_irq);          INTERRUPT_CONNECT(devinit->interrupt_path, d->cpu_irq);
222    
223          /*          /*
224           *  Register the 64 Grand Central interrupts (32 lo, 32 hi):           *  Register the 126 OpenPIC interrupts
225           */           */
226          for (i=0; i<32; i++) {          for (i=0; i<126; i++) {
227                  struct interrupt template;                  struct interrupt template;
228                  char n[300];                  char n[300];
229                  snprintf(n, sizeof(n), "%s.gc.lo.%i",                  snprintf(n, sizeof(n), "%s.openpic.%i",
                     devinit->interrupt_path, i);  
                 memset(&template, 0, sizeof(template));  
                 template.line = 1 << i;  
                 template.name = n;  
                 template.extra = d;  
                 template.interrupt_assert = gc_lo_interrupt_assert;  
                 template.interrupt_deassert = gc_lo_interrupt_deassert;  
                 interrupt_handler_register(&template);  
   
                 snprintf(n, sizeof(n), "%s.gc.hi.%i",  
230                      devinit->interrupt_path, i);                      devinit->interrupt_path, i);
231                  memset(&template, 0, sizeof(template));                  memset(&template, 0, sizeof(template));
232                  template.line = 1 << i;                  template.line = 1 << i;
233                  template.name = n;                  template.name = n;
234                  template.extra = d;                  template.extra = d;
235                  template.interrupt_assert = gc_hi_interrupt_assert;                  template.interrupt_assert = openpic_lo_interrupt_assert;
236                  template.interrupt_deassert = gc_hi_interrupt_deassert;                  template.interrupt_deassert = openpic_lo_interrupt_deassert;
237                  interrupt_handler_register(&template);                  interrupt_handler_register(&template);
238          }          }
239    
240          memory_device_register(devinit->machine->memory, "gc",          memory_device_register(devinit->machine->memory, "openpic",
241              devinit->addr, DEV_GC_LENGTH, dev_gc_access, d, DM_DEFAULT, NULL);              devinit->addr, DEV_OPENPIC_LENGTH, dev_openpic_access, d, DM_DEFAULT, NULL);
242    
243          return 1;          return 1;
244  }  }
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