git.sesse.net Git - pistorm/blob - platforms/amiga/pistorm-dev/pistorm-dev.c

   1 // SPDX-License-Identifier: MIT
   2
   3 #include "pistorm-dev.h"
   4 #include "pistorm-dev-enums.h"
   5 #include <stdio.h>
   6
   7 #define DEBUG_PISTORM_DEVICE
   8
   9 #ifdef DEBUG_PISTORM_DEVICE
  10 #define DEBUG printf
  11
  12 #define PIDEV_SWREV 0x0105
  13
  14 static const char *op_type_names[4] = {
  15     "BYTE",
  16     "WORD",
  17     "LONGWORD",
  18     "MEM",
  19 };
  20 #else
  21 #define DEBUG(...)
  22 #endif
  23
  24 extern uint32_t pistorm_dev_base;
  25 extern uint32_t do_reset;
  26
  27 extern uint8_t rtg_enabled, rtg_on, pinet_enabled, piscsi_enabled;
  28
  29 void handle_pistorm_dev_write(uint32_t addr, uint32_t val, uint8_t type) {
  30     switch((addr & 0xFFFF)) {
  31         case PI_CMD_RESET:
  32             DEBUG("[PISTORM-DEV] System reset called through PiStorm interaction device, code %d\n", (val & 0xFFFF));
  33             do_reset = 1;
  34             break;
  35         default:
  36             DEBUG("[PISTORM-DEV] WARN: Unhandled %s register write to %.4X: %d\n", op_type_names[type], addr - pistorm_dev_base, val);
  37             break;
  38     }
  39 }
  40
  41 uint32_t handle_pistorm_dev_read(uint32_t addr, uint8_t type) {
  42     switch((addr & 0xFFFF)) {
  43         case PI_CMD_HWREV:
  44             // Probably replace this with some read from the CPLD to get a simple hardware revision.
  45             DEBUG("[PISTORM-DEV] %s Read from HWREV\n", op_type_names[type]);
  46             return 0x0101; // 1.1
  47             break;
  48         case PI_CMD_SWREV:
  49             DEBUG("[PISTORM-DEV] %s Read from SWREV\n", op_type_names[type]);
  50             return PIDEV_SWREV;
  51             break;
  52         case PI_CMD_RTGSTATUS:
  53             DEBUG("[PISTORM-DEV] %s Read from RTGSTATUS\n", op_type_names[type]);
  54             return (rtg_on << 1) | rtg_enabled;
  55             break;
  56         case PI_CMD_NETSTATUS:
  57             DEBUG("[PISTORM-DEV] %s Read from NETSTATUS\n", op_type_names[type]);
  58             return pinet_enabled;
  59             break;
  60         case PI_CMD_PISCSI_CTRL:
  61             DEBUG("[PISTORM-DEV] %s Read from PISCSI_CTRL\n", op_type_names[type]);
  62             return piscsi_enabled;
  63             break;
  64         default:
  65             DEBUG("[PISTORM-DEV] WARN: Unhandled %s register read from %.4X\n", op_type_names[type], addr - pistorm_dev_base);
  66             break;
  67     }
  68     return 0;
  69 }