1/* Handle cache related addresses.
2
3   Copyright (C) 1996-2020 Free Software Foundation, Inc.
4   Contributed by Cygnus Solutions and Mike Frysinger.
5
6   This file is part of the GNU simulators.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21#include "config.h"
22
23#include "sim-main.h"
24#include "hw-main.h"
25
26#include "dv-m32r_cache.h"
27
28struct m32r_cache_hw
29{
30};
31
32static unsigned
33cris_io_write_buffer (struct hw *me, const void *source,
34		      int space, address_word addr, unsigned nr_bytes)
35{
36  SIM_DESC sd = hw_system (me);
37
38#if WITH_SCACHE
39  /* MSPR support is deprecated but is kept in for upward compatibility
40     with existing overlay support.  */
41  switch (addr)
42    {
43    case MSPR_ADDR:
44      if ((*(const char *) source & MSPR_PURGE) != 0)
45	scache_flush (sd);
46      break;
47
48    case MCCR_ADDR:
49      if ((*(const char *) source & MCCR_CP) != 0)
50	scache_flush (sd);
51      break;
52    }
53#endif
54
55  return nr_bytes;
56}
57
58static void
59attach_regs (struct hw *me, struct m32r_cache_hw *hw)
60{
61  address_word attach_address;
62  int attach_space;
63  unsigned attach_size;
64  reg_property_spec reg;
65
66  if (hw_find_property (me, "reg") == NULL)
67    hw_abort (me, "Missing \"reg\" property");
68
69  if (!hw_find_reg_array_property (me, "reg", 0, &reg))
70    hw_abort (me, "\"reg\" property must contain three addr/size entries");
71
72  hw_unit_address_to_attach_address (hw_parent (me),
73				     &reg.address,
74				     &attach_space, &attach_address, me);
75  hw_unit_size_to_attach_size (hw_parent (me), &reg.size, &attach_size, me);
76
77  hw_attach_address (hw_parent (me),
78		     0, attach_space, attach_address, attach_size, me);
79}
80
81static void
82m32r_cache_finish (struct hw *me)
83{
84  struct m32r_cache_hw *hw;
85
86  hw = HW_ZALLOC (me, struct m32r_cache_hw);
87  set_hw_data (me, hw);
88  set_hw_io_write_buffer (me, cris_io_write_buffer);
89
90  attach_regs (me, hw);
91}
92
93const struct hw_descriptor dv_m32r_cache_descriptor[] = {
94  { "m32r_cache", m32r_cache_finish, },
95  { NULL },
96};
97