3 Copyright (C) 1996-2021 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions and Mike Frysinger.
6 This file is part of simulators.
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.
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.
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/>. */
21 /* This must come before any other includes. */
27 #include "dv-sockser.h"
28 #include "dv-m32r_uart.h"
35 m32r_uart_io_write_buffer (struct hw
*me
, const void *source
,
36 int space
, address_word addr
, unsigned nr_bytes
)
38 SIM_DESC sd
= hw_system (me
);
39 struct m32r_uart
*uart
= hw_data (me
);
40 int status
= dv_sockser_status (sd
);
44 case UART_OUTCHAR_ADDR
:
45 if (status
& DV_SOCKSER_DISCONNECTED
)
47 sim_io_write_stdout (sd
, source
, nr_bytes
);
48 sim_io_flush_stdout (sd
);
52 /* Normalize errors to a value of 0. */
53 int ret
= dv_sockser_write_buffer (sd
, source
, nr_bytes
);
64 m32r_uart_io_read_buffer (struct hw
*me
, void *dest
,
65 int space
, address_word addr
, unsigned nr_bytes
)
67 SIM_DESC sd
= hw_system (me
);
68 struct m32r_uart
*uart
= hw_data (me
);
69 int status
= dv_sockser_status (sd
);
73 case UART_INCHAR_ADDR
:
74 if (status
& DV_SOCKSER_DISCONNECTED
)
76 int ret
= sim_io_poll_read (sd
, 0/*STDIN*/, dest
, 1);
77 return (ret
< 0) ? 0 : 1;
82 buffer
[0] = dv_sockser_read (sd
);
85 case UART_STATUS_ADDR
:
87 unsigned char *p
= dest
;
89 p
[1] = (((status
& DV_SOCKSER_INPUT_EMPTY
)
90 #ifdef UART_INPUT_READY0
91 ? UART_INPUT_READY
: 0)
93 ? 0 : UART_INPUT_READY
)
95 + ((status
& DV_SOCKSER_OUTPUT_EMPTY
) ? UART_OUTPUT_READY
: 0));
104 attach_m32r_uart_regs (struct hw
*me
, struct m32r_uart
*uart
)
106 address_word attach_address
;
108 unsigned attach_size
;
109 reg_property_spec reg
;
111 if (hw_find_property (me
, "reg") == NULL
)
112 hw_abort (me
, "Missing \"reg\" property");
114 if (!hw_find_reg_array_property (me
, "reg", 0, ®
))
115 hw_abort (me
, "\"reg\" property must contain three addr/size entries");
117 hw_unit_address_to_attach_address (hw_parent (me
),
119 &attach_space
, &attach_address
, me
);
120 hw_unit_size_to_attach_size (hw_parent (me
), ®
.size
, &attach_size
, me
);
122 hw_attach_address (hw_parent (me
),
123 0, attach_space
, attach_address
, attach_size
, me
);
127 m32r_uart_finish (struct hw
*me
)
129 struct m32r_uart
*uart
;
131 uart
= HW_ZALLOC (me
, struct m32r_uart
);
133 set_hw_data (me
, uart
);
134 set_hw_io_read_buffer (me
, m32r_uart_io_read_buffer
);
135 set_hw_io_write_buffer (me
, m32r_uart_io_write_buffer
);
137 attach_m32r_uart_regs (me
, uart
);
140 const struct hw_descriptor dv_m32r_uart_descriptor
[] =
142 {"m32r_uart", m32r_uart_finish
,},