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-rw-r--r--tools/bus_space/Python/lang.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/tools/bus_space/Python/lang.c b/tools/bus_space/Python/lang.c
index f328a77..2247360 100644
--- a/tools/bus_space/Python/lang.c
+++ b/tools/bus_space/Python/lang.c
@@ -30,6 +30,7 @@ __FBSDID("$FreeBSD$");
#include <Python.h>
#include "bus_space.h"
+#include "busdma.h"
static PyObject *
bus_read_1(PyObject *self, PyObject *args)
@@ -173,6 +174,91 @@ bus_subregion(PyObject *self, PyObject *args)
return (Py_BuildValue("i", rid));
}
+static PyObject *
+busdma_tag_create(PyObject *self, PyObject *args)
+{
+ char *dev;
+ u_long align, bndry, maxaddr, maxsz, maxsegsz;
+ u_int nsegs, datarate, flags;
+ int tid;
+
+ if (!PyArg_ParseTuple(args, "skkkkIkII", &dev, &align, &bndry,
+ &maxaddr, &maxsz, &nsegs, &maxsegsz, &datarate, &flags))
+ return (NULL);
+ tid = bd_tag_create(dev, align, bndry, maxaddr, maxsz, nsegs,
+ maxsegsz, datarate, flags);
+ if (tid == -1) {
+ PyErr_SetString(PyExc_IOError, strerror(errno));
+ return (NULL);
+ }
+ return (Py_BuildValue("i", tid));
+}
+
+static PyObject *
+busdma_tag_derive(PyObject *self, PyObject *args)
+{
+ u_long align, bndry, maxaddr, maxsz, maxsegsz;
+ u_int nsegs, datarate, flags;
+ int ptid, tid;
+
+ if (!PyArg_ParseTuple(args, "ikkkkIkII", &ptid, &align, &bndry,
+ &maxaddr, &maxsz, &nsegs, &maxsegsz, &datarate, &flags))
+ return (NULL);
+ tid = bd_tag_derive(ptid, align, bndry, maxaddr, maxsz, nsegs,
+ maxsegsz, datarate, flags);
+ if (tid == -1) {
+ PyErr_SetString(PyExc_IOError, strerror(errno));
+ return (NULL);
+ }
+ return (Py_BuildValue("i", tid));
+}
+
+static PyObject *
+busdma_tag_destroy(PyObject *self, PyObject *args)
+{
+ int error, tid;
+
+ if (!PyArg_ParseTuple(args, "i", &tid))
+ return (NULL);
+ error = bd_tag_destroy(tid);
+ if (error) {
+ PyErr_SetString(PyExc_IOError, strerror(error));
+ return (NULL);
+ }
+ Py_RETURN_NONE;
+}
+
+static PyObject *
+busdma_mem_alloc(PyObject *self, PyObject *args)
+{
+ u_int flags;
+ int mdid, tid;
+
+ if (!PyArg_ParseTuple(args, "iI", &tid, &flags))
+ return (NULL);
+ mdid = bd_mem_alloc(tid, flags);
+ if (mdid == -1) {
+ PyErr_SetString(PyExc_IOError, strerror(errno));
+ return (NULL);
+ }
+ return (Py_BuildValue("i", mdid));
+}
+
+static PyObject *
+busdma_mem_free(PyObject *self, PyObject *args)
+{
+ int error, mdid;
+
+ if (!PyArg_ParseTuple(args, "i", &mdid))
+ return (NULL);
+ error = bd_mem_free(mdid);
+ if (error) {
+ PyErr_SetString(PyExc_IOError, strerror(error));
+ return (NULL);
+ }
+ Py_RETURN_NONE;
+}
+
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." },
@@ -192,9 +278,24 @@ static PyMethodDef bus_space_methods[] = {
{ NULL, NULL, 0, NULL }
};
+static PyMethodDef busdma_methods[] = {
+ { "tag_create", busdma_tag_create, METH_VARARGS,
+ "Create a root tag." },
+ { "tag_derive", busdma_tag_derive, METH_VARARGS,
+ "Derive a child tag." },
+ { "tag_destroy", busdma_tag_destroy, METH_VARARGS,
+ "Destroy a tag." },
+ { "mem_alloc", busdma_mem_alloc, METH_VARARGS,
+ "Allocate memory according to the DMA constraints." },
+ { "mem_free", busdma_mem_free, METH_VARARGS,
+ "Free allocated memory." },
+ { NULL, NULL, 0, NULL }
+};
+
PyMODINIT_FUNC
initbus_space(void)
{
Py_InitModule("bus_space", bus_space_methods);
+ Py_InitModule("busdma", busdma_methods);
}
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