3 Copyright (C) 1996-2019 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/>. */
26 #include "dv-sockser.h"
27 #include "dv-m32r_uart.h"
34 m32r_uart_io_write_buffer (struct hw *me, const void *source,
35 int space, address_word addr, unsigned nr_bytes)
37 SIM_DESC sd = hw_system (me);
38 struct m32r_uart *uart = hw_data (me);
39 int status = dv_sockser_status (sd);
43 case UART_OUTCHAR_ADDR:
44 if (status & DV_SOCKSER_DISCONNECTED)
46 sim_io_write_stdout (sd, source, nr_bytes);
47 sim_io_flush_stdout (sd);
51 /* Normalize errors to a value of 0. */
52 int ret = dv_sockser_write_buffer (sd, source, nr_bytes);
63 m32r_uart_io_read_buffer (struct hw *me, void *dest,
64 int space, address_word addr, unsigned nr_bytes)
66 SIM_DESC sd = hw_system (me);
67 struct m32r_uart *uart = hw_data (me);
68 int status = dv_sockser_status (sd);
72 case UART_INCHAR_ADDR:
73 if (status & DV_SOCKSER_DISCONNECTED)
75 int ret = sim_io_poll_read (sd, 0/*STDIN*/, dest, 1);
76 return (ret < 0) ? 0 : 1;
81 buffer[0] = dv_sockser_read (sd);
84 case UART_STATUS_ADDR:
86 unsigned char *p = dest;
88 p[1] = (((status & DV_SOCKSER_INPUT_EMPTY)
89 #ifdef UART_INPUT_READY0
90 ? UART_INPUT_READY : 0)
92 ? 0 : UART_INPUT_READY)
94 + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0));
103 attach_m32r_uart_regs (struct hw *me, struct m32r_uart *uart)
105 address_word attach_address;
107 unsigned attach_size;
108 reg_property_spec reg;
110 if (hw_find_property (me, "reg") == NULL)
111 hw_abort (me, "Missing \"reg\" property");
113 if (!hw_find_reg_array_property (me, "reg", 0, ®))
114 hw_abort (me, "\"reg\" property must contain three addr/size entries");
116 hw_unit_address_to_attach_address (hw_parent (me),
118 &attach_space, &attach_address, me);
119 hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
121 hw_attach_address (hw_parent (me),
122 0, attach_space, attach_address, attach_size, me);
126 m32r_uart_finish (struct hw *me)
128 struct m32r_uart *uart;
130 uart = HW_ZALLOC (me, struct m32r_uart);
132 set_hw_data (me, uart);
133 set_hw_io_read_buffer (me, m32r_uart_io_read_buffer);
134 set_hw_io_write_buffer (me, m32r_uart_io_write_buffer);
136 attach_m32r_uart_regs (me, uart);
139 const struct hw_descriptor dv_m32r_uart_descriptor[] =
141 {"m32r_uart", m32r_uart_finish,},