/[gxemul]/trunk/src/devices/dev_asc.c
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revision 20 by dpavlin, Mon Oct 8 16:19:23 2007 UTC revision 28 by dpavlin, Mon Oct 8 16:20:26 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2003-2005  Anders Gavare.  All rights reserved.   *  Copyright (C) 2003-2006  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_asc.c,v 1.76 2005/11/13 00:14:08 debug Exp $   *  $Id: dev_asc.c,v 1.81 2006/07/21 16:55:41 debug Exp $
29   *   *
30   *  'asc' SCSI controller for some DECstation/DECsystem models, and   *  'asc' SCSI controller for some DECstation/DECsystem models and PICA-61.
  *  for PICA-61.  
31   *   *
32   *  Supposed to support SCSI-1 and SCSI-2. I've not yet found any docs   *  Supposed to support SCSI-1 and SCSI-2. I've not yet found any docs
33   *  on NCR53C9X, so I'll try to implement this device from LSI53CF92A docs   *  on NCR53C9X, so I'll try to implement this device from LSI53CF92A docs
# Line 50  Line 49 
49   *  TODO:  This module needs a clean-up, and some testing to see that   *  TODO:  This module needs a clean-up, and some testing to see that
50   *         it works will all OSes that might use it (NetBSD, OpenBSD,   *         it works will all OSes that might use it (NetBSD, OpenBSD,
51   *         Ultrix, Linux, Mach, OSF/1, Sprite, ...)   *         Ultrix, Linux, Mach, OSF/1, Sprite, ...)
52     *
53     *         Running Linux/DECstation 2.4.26 with no scsi disks attached causes
54     *         a warning message to be printed by Linux. (Whether this is a bug,
55     *         is is the way it works on real hardware, I don't know.)
56   */   */
57    
58  #include <stdio.h>  #include <stdio.h>
# Line 149  static int dev_asc_select(struct cpu *cp Line 152  static int dev_asc_select(struct cpu *cp
152          int to_id, int dmaflag, int n_messagebytes);          int to_id, int dmaflag, int n_messagebytes);
153    
154    
155  /*  DEVICE_TICK(asc)
  *  dev_asc_tick():  
  *  
  *  This function is called "every now and then" from the CPU  
  *  main loop.  
  */  
 void dev_asc_tick(struct cpu *cpu, void *extra)  
156  {  {
157          struct asc_data *d = extra;          struct asc_data *d = extra;
158    
# Line 309  fatal("TODO..............\n"); Line 306  fatal("TODO..............\n");
306                                  fatal("no incoming DMA data?\n");                                  fatal("no incoming DMA data?\n");
307                                  res = 0;                                  res = 0;
308                          } else {                          } else {
309                                  int len = d->xferp->data_in_len;                                  size_t len = d->xferp->data_in_len;
310                                  int len2 = d->reg_wo[NCR_TCL] +                                  size_t len2 = d->reg_wo[NCR_TCL] +
311                                      d->reg_wo[NCR_TCM] * 256;                                      d->reg_wo[NCR_TCM] * 256;
312                                  if (len2 == 0)                                  if (len2 == 0)
313                                          len2 = 65536;                                          len2 = 65536;
# Line 748  static int dev_asc_select(struct cpu *cp Line 745  static int dev_asc_select(struct cpu *cp
745  }  }
746    
747    
748  /*  DEVICE_ACCESS(asc_address_reg)
  *  dev_asc_address_reg_access():  
  */  
 int dev_asc_address_reg_access(struct cpu *cpu, struct memory *mem,  
         uint64_t relative_addr, unsigned char *data, size_t len,  
         int writeflag, void *extra)  
749  {  {
750          struct asc_data *d = extra;          struct asc_data *d = extra;
751    
# Line 770  int dev_asc_address_reg_access(struct cp Line 762  int dev_asc_address_reg_access(struct cp
762  }  }
763    
764    
765  /*  DEVICE_ACCESS(asc_dma)
  *  dev_asc_dma_access():  
  */  
 int dev_asc_dma_access(struct cpu *cpu, struct memory *mem,  
         uint64_t relative_addr, unsigned char *data, size_t len,  
         int writeflag, void *extra)  
766  {  {
767          struct asc_data *d = extra;          struct asc_data *d = extra;
768    
# Line 813  int dev_asc_dma_access(struct cpu *cpu, Line 800  int dev_asc_dma_access(struct cpu *cpu,
800  }  }
801    
802    
803  /*  DEVICE_ACCESS(asc)
  *  dev_asc_access():  
  */  
 int dev_asc_access(struct cpu *cpu, struct memory *mem,  
         uint64_t relative_addr, unsigned char *data, size_t len,  
         int writeflag, void *extra)  
804  {  {
805          int regnr;          int regnr;
806          struct asc_data *d = extra;          struct asc_data *d = extra;
# Line 1277  void dev_asc_init(struct machine *machin Line 1259  void dev_asc_init(struct machine *machin
1259          d->dma_controller_data = dma_controller_data;          d->dma_controller_data = dma_controller_data;
1260    
1261          memory_device_register(mem, "asc", baseaddr,          memory_device_register(mem, "asc", baseaddr,
1262              mode == DEV_ASC_PICA?              mode == DEV_ASC_PICA? DEV_ASC_PICA_LENGTH : DEV_ASC_DEC_LENGTH,
                 DEV_ASC_PICA_LENGTH : DEV_ASC_DEC_LENGTH,  
1263              dev_asc_access, d, DM_DEFAULT, NULL);              dev_asc_access, d, DM_DEFAULT, NULL);
1264    
1265          if (mode == DEV_ASC_DEC) {          if (mode == DEV_ASC_DEC) {
# Line 1291  void dev_asc_init(struct machine *machin Line 1272  void dev_asc_init(struct machine *machin
1272                      DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK, d->dma);                      DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK, d->dma);
1273          }          }
1274    
1275          machine_add_tickfunction(machine, dev_asc_tick, d, ASC_TICK_SHIFT);          machine_add_tickfunction(machine, dev_asc_tick, d, ASC_TICK_SHIFT, 0.0);
1276  }  }
1277    
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