/[gxemul]/trunk/src/devices/dev_sii.c
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revision 22 by dpavlin, Mon Oct 8 16:19:37 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_sii.c,v 1.16 2006/01/01 13:17:17 debug Exp $   *  $Id: dev_sii.c,v 1.21 2007/06/15 19:57:34 debug Exp $
29   *     *  
30   *  SII SCSI controller, used in some DECstation systems.   *  COMMENT: SII SCSI controller, used in some DECstation systems
31   *   *
32   *  TODO:  This is huge and ugly. Fix this.   *  TODO:  This is huge and ugly. Fix this.
33   */   */
# Line 38  Line 38 
38    
39  #include "cpu.h"  #include "cpu.h"
40  #include "devices.h"  #include "devices.h"
41    #include "interrupt.h"
42  #include "machine.h"  #include "machine.h"
43  #include "memory.h"  #include "memory.h"
44  #include "misc.h"  #include "misc.h"
# Line 49  Line 50 
50    
51    
52  struct sii_data {  struct sii_data {
53          int             irq_nr;          struct interrupt irq;
54    
55          uint64_t        buf_start;          uint64_t        buf_start;
56          uint64_t        buf_end;          uint64_t        buf_end;
57    
# Line 91  void combine_sii_bits(struct sii_data *d Line 93  void combine_sii_bits(struct sii_data *d
93  }  }
94    
95    
96  /*  DEVICE_TICK(sii)
  *  dev_sii_tick():  
  */  
 void dev_sii_tick(struct cpu *cpu, void *extra)  
97  {  {
98          struct sii_data *d = extra;          struct sii_data *d = extra;
99    
# Line 170  void dev_sii_tick(struct cpu *cpu, void Line 169  void dev_sii_tick(struct cpu *cpu, void
169          combine_sii_bits(d);          combine_sii_bits(d);
170    
171          if (d->siiregs.csr & SII_IE && d->siiregs.cstat & (SII_CI | SII_DI))          if (d->siiregs.csr & SII_IE && d->siiregs.cstat & (SII_CI | SII_DI))
172                  cpu_interrupt(cpu, d->irq_nr);                  INTERRUPT_ASSERT(d->irq);
173          else          else
174                  cpu_interrupt_ack(cpu, d->irq_nr);                  INTERRUPT_DEASSERT(d->irq);
175  }  }
176    
177    
 /*  
  *  dev_sii_access():  
  */  
178  DEVICE_ACCESS(sii)  DEVICE_ACCESS(sii)
179  {  {
180          uint64_t idata = 0, odata = 0;          uint64_t idata = 0, odata = 0;
# Line 443  DEVICE_ACCESS(sii) Line 439  DEVICE_ACCESS(sii)
439  }  }
440    
441    
 /*  
  *  dev_sii_init():  
  */  
442  void dev_sii_init(struct machine *machine, struct memory *mem,  void dev_sii_init(struct machine *machine, struct memory *mem,
443          uint64_t baseaddr, uint64_t buf_start, uint64_t buf_end, int irq_nr)          uint64_t baseaddr, uint64_t buf_start, uint64_t buf_end,
444            char *irq_path)
445  {  {
446          struct sii_data *d = malloc(sizeof(struct sii_data));          struct sii_data *d;
         if (d == NULL) {  
                 fprintf(stderr, "out of memory\n");  
                 exit(1);  
         }  
447    
448            CHECK_ALLOCATION(d = malloc(sizeof(struct sii_data)));
449          memset(d, 0, sizeof(struct sii_data));          memset(d, 0, sizeof(struct sii_data));
450          d->irq_nr    = irq_nr;  
451            INTERRUPT_CONNECT(irq_path, d->irq);
452          d->buf_start = buf_start;          d->buf_start = buf_start;
453          d->buf_end   = buf_end;          d->buf_end   = buf_end;
454            d->regs      = (uint16_t *) &d->siiregs;
         d->regs = (uint16_t *) &d->siiregs;  
455    
456          memory_device_register(mem, "sii", baseaddr, DEV_SII_LENGTH,          memory_device_register(mem, "sii", baseaddr, DEV_SII_LENGTH,
457              dev_sii_access, (void *)d, DM_DEFAULT, NULL);              dev_sii_access, (void *)d, DM_DEFAULT, NULL);
458    
459          machine_add_tickfunction(machine, dev_sii_tick, d, SII_TICK_SHIFT);          machine_add_tickfunction(machine, dev_sii_tick, d,
460                SII_TICK_SHIFT);
461  }  }
462    
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