2 * Copyright (c) 2014 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include "bus_space.h"
36 bus_read_1(PyObject *self, PyObject *args)
42 if (!PyArg_ParseTuple(args, "il", &rid, &ofs))
44 if (!bs_read(rid, ofs, &val, sizeof(val))) {
45 PyErr_SetString(PyExc_IOError, strerror(errno));
48 return (Py_BuildValue("B", val));
52 bus_read_2(PyObject *self, PyObject *args)
58 if (!PyArg_ParseTuple(args, "il", &rid, &ofs))
60 if (!bs_read(rid, ofs, &val, sizeof(val))) {
61 PyErr_SetString(PyExc_IOError, strerror(errno));
64 return (Py_BuildValue("H", val));
68 bus_read_4(PyObject *self, PyObject *args)
74 if (!PyArg_ParseTuple(args, "il", &rid, &ofs))
76 if (!bs_read(rid, ofs, &val, sizeof(val))) {
77 PyErr_SetString(PyExc_IOError, strerror(errno));
80 return (Py_BuildValue("I", val));
84 bus_write_1(PyObject *self, PyObject *args)
90 if (!PyArg_ParseTuple(args, "ilB", &rid, &ofs, &val))
92 if (!bs_write(rid, ofs, &val, sizeof(val))) {
93 PyErr_SetString(PyExc_IOError, strerror(errno));
100 bus_write_2(PyObject *self, PyObject *args)
106 if (!PyArg_ParseTuple(args, "ilH", &rid, &ofs, &val))
108 if (!bs_write(rid, ofs, &val, sizeof(val))) {
109 PyErr_SetString(PyExc_IOError, strerror(errno));
116 bus_write_4(PyObject *self, PyObject *args)
122 if (!PyArg_ParseTuple(args, "ilI", &rid, &ofs, &val))
124 if (!bs_write(rid, ofs, &val, sizeof(val))) {
125 PyErr_SetString(PyExc_IOError, strerror(errno));
132 bus_map(PyObject *self, PyObject *args)
137 if (!PyArg_ParseTuple(args, "s", &dev))
141 PyErr_SetString(PyExc_IOError, strerror(errno));
144 return (Py_BuildValue("i", rid));
148 bus_unmap(PyObject *self, PyObject *args)
152 if (!PyArg_ParseTuple(args, "i", &rid))
154 if (!bs_unmap(rid)) {
155 PyErr_SetString(PyExc_IOError, strerror(errno));
162 bus_subregion(PyObject *self, PyObject *args)
167 if (!PyArg_ParseTuple(args, "ill", &rid0, &ofs, &sz))
169 rid = bs_subregion(rid0, ofs, sz);
171 PyErr_SetString(PyExc_IOError, strerror(errno));
174 return (Py_BuildValue("i", rid));
178 busdma_tag_create(PyObject *self, PyObject *args)
181 u_long align, bndry, maxaddr, maxsz, maxsegsz;
182 u_int nsegs, datarate, flags;
185 if (!PyArg_ParseTuple(args, "skkkkIkII", &dev, &align, &bndry,
186 &maxaddr, &maxsz, &nsegs, &maxsegsz, &datarate, &flags))
188 tid = bd_tag_create(dev, align, bndry, maxaddr, maxsz, nsegs,
189 maxsegsz, datarate, flags);
191 PyErr_SetString(PyExc_IOError, strerror(errno));
194 return (Py_BuildValue("i", tid));
198 busdma_tag_derive(PyObject *self, PyObject *args)
200 u_long align, bndry, maxaddr, maxsz, maxsegsz;
201 u_int nsegs, datarate, flags;
204 if (!PyArg_ParseTuple(args, "ikkkkIkII", &ptid, &align, &bndry,
205 &maxaddr, &maxsz, &nsegs, &maxsegsz, &datarate, &flags))
207 tid = bd_tag_derive(ptid, align, bndry, maxaddr, maxsz, nsegs,
208 maxsegsz, datarate, flags);
210 PyErr_SetString(PyExc_IOError, strerror(errno));
213 return (Py_BuildValue("i", tid));
217 busdma_tag_destroy(PyObject *self, PyObject *args)
221 if (!PyArg_ParseTuple(args, "i", &tid))
223 error = bd_tag_destroy(tid);
225 PyErr_SetString(PyExc_IOError, strerror(error));
232 busdma_mem_alloc(PyObject *self, PyObject *args)
237 if (!PyArg_ParseTuple(args, "iI", &tid, &flags))
239 mdid = bd_mem_alloc(tid, flags);
241 PyErr_SetString(PyExc_IOError, strerror(errno));
244 return (Py_BuildValue("i", mdid));
248 busdma_mem_free(PyObject *self, PyObject *args)
252 if (!PyArg_ParseTuple(args, "i", &mdid))
254 error = bd_mem_free(mdid);
256 PyErr_SetString(PyExc_IOError, strerror(error));
262 static PyMethodDef bus_space_methods[] = {
263 { "read_1", bus_read_1, METH_VARARGS, "Read a 1-byte data item." },
264 { "read_2", bus_read_2, METH_VARARGS, "Read a 2-byte data item." },
265 { "read_4", bus_read_4, METH_VARARGS, "Read a 4-byte data item." },
267 { "write_1", bus_write_1, METH_VARARGS, "Write a 1-byte data item." },
268 { "write_2", bus_write_2, METH_VARARGS, "Write a 2-byte data item." },
269 { "write_4", bus_write_4, METH_VARARGS, "Write a 4-byte data item." },
271 { "map", bus_map, METH_VARARGS,
272 "Return a resource ID for a device file created by proto(4)" },
273 { "unmap", bus_unmap, METH_VARARGS,
274 "Free a resource ID" },
275 { "subregion", bus_subregion, METH_VARARGS,
276 "Return a resource ID for a subregion of another resource ID" },
278 { NULL, NULL, 0, NULL }
281 static PyMethodDef busdma_methods[] = {
282 { "tag_create", busdma_tag_create, METH_VARARGS,
283 "Create a root tag." },
284 { "tag_derive", busdma_tag_derive, METH_VARARGS,
285 "Derive a child tag." },
286 { "tag_destroy", busdma_tag_destroy, METH_VARARGS,
288 { "mem_alloc", busdma_mem_alloc, METH_VARARGS,
289 "Allocate memory according to the DMA constraints." },
290 { "mem_free", busdma_mem_free, METH_VARARGS,
291 "Free allocated memory." },
292 { NULL, NULL, 0, NULL }
299 Py_InitModule("bus_space", bus_space_methods);
300 Py_InitModule("busdma", busdma_methods);