diff options
Diffstat (limited to 'tools/bus_space/Python/lang.c')
| -rw-r--r-- | tools/bus_space/Python/lang.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/tools/bus_space/Python/lang.c b/tools/bus_space/Python/lang.c new file mode 100644 index 0000000..f328a77 --- /dev/null +++ b/tools/bus_space/Python/lang.c @@ -0,0 +1,200 @@ +/*- + * Copyright (c) 2014 Marcel Moolenaar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <Python.h> + +#include "bus_space.h" + +static PyObject * +bus_read_1(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint8_t val; + + if (!PyArg_ParseTuple(args, "il", &rid, &ofs)) + return (NULL); + if (!bs_read(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + return (Py_BuildValue("B", val)); +} + +static PyObject * +bus_read_2(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint16_t val; + + if (!PyArg_ParseTuple(args, "il", &rid, &ofs)) + return (NULL); + if (!bs_read(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + return (Py_BuildValue("H", val)); +} + +static PyObject * +bus_read_4(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint32_t val; + + if (!PyArg_ParseTuple(args, "il", &rid, &ofs)) + return (NULL); + if (!bs_read(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + return (Py_BuildValue("I", val)); +} + +static PyObject * +bus_write_1(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint8_t val; + + if (!PyArg_ParseTuple(args, "ilB", &rid, &ofs, &val)) + return (NULL); + if (!bs_write(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + Py_RETURN_NONE; +} + +static PyObject * +bus_write_2(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint16_t val; + + if (!PyArg_ParseTuple(args, "ilH", &rid, &ofs, &val)) + return (NULL); + if (!bs_write(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + Py_RETURN_NONE; +} + +static PyObject * +bus_write_4(PyObject *self, PyObject *args) +{ + long ofs; + int rid; + uint32_t val; + + if (!PyArg_ParseTuple(args, "ilI", &rid, &ofs, &val)) + return (NULL); + if (!bs_write(rid, ofs, &val, sizeof(val))) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + Py_RETURN_NONE; +} + +static PyObject * +bus_map(PyObject *self, PyObject *args) +{ + char *dev; + int rid; + + if (!PyArg_ParseTuple(args, "s", &dev)) + return (NULL); + rid = bs_map(dev); + if (rid == -1) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + return (Py_BuildValue("i", rid)); +} + +static PyObject * +bus_unmap(PyObject *self, PyObject *args) +{ + int rid; + + if (!PyArg_ParseTuple(args, "i", &rid)) + return (NULL); + if (!bs_unmap(rid)) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + Py_RETURN_NONE; +} + +static PyObject * +bus_subregion(PyObject *self, PyObject *args) +{ + long ofs, sz; + int rid0, rid; + + if (!PyArg_ParseTuple(args, "ill", &rid0, &ofs, &sz)) + return (NULL); + rid = bs_subregion(rid0, ofs, sz); + if (rid == -1) { + PyErr_SetString(PyExc_IOError, strerror(errno)); + return (NULL); + } + return (Py_BuildValue("i", rid)); +} + +static PyMethodDef bus_space_methods[] = { + { "read_1", bus_read_1, METH_VARARGS, "Read a 1-byte data item." }, + { "read_2", bus_read_2, METH_VARARGS, "Read a 2-byte data item." }, + { "read_4", bus_read_4, METH_VARARGS, "Read a 4-byte data item." }, + + { "write_1", bus_write_1, METH_VARARGS, "Write a 1-byte data item." }, + { "write_2", bus_write_2, METH_VARARGS, "Write a 2-byte data item." }, + { "write_4", bus_write_4, METH_VARARGS, "Write a 4-byte data item." }, + + { "map", bus_map, METH_VARARGS, + "Return a resource ID for a device file created by proto(4)" }, + { "unmap", bus_unmap, METH_VARARGS, + "Free a resource ID" }, + { "subregion", bus_subregion, METH_VARARGS, + "Return a resource ID for a subregion of another resource ID" }, + + { NULL, NULL, 0, NULL } +}; + +PyMODINIT_FUNC +initbus_space(void) +{ + + Py_InitModule("bus_space", bus_space_methods); +} |
