+/*
+ * Copyright 2012 GRNET S.A. 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 GRNET S.A. ``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 GRNET S.A OR
+ * CONTRIBUTORS 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.
+ *
+ * The views and conclusions contained in the software and
+ * documentation are those of the authors and should not be
+ * interpreted as representing official policies, either expressed
+ * or implied, of GRNET S.A.
+ */
+
/* xseg_segdev.c
*
*/
#include <xseg/xseg.h>
#include <sys/kernel/segdev.h>
#include <sys/util.h>
-
+#include <drivers/xseg_segdev.h>
+#include <peers/kernel/xsegbd.h>
MODULE_DESCRIPTION("xseg_segdev");
MODULE_AUTHOR("XSEG");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("BSD");
-/* for now, support only one peer */
-static struct xseg *xsegments[1];
+/* FIXME */
+static struct xseg *xsegments[65536];
static unsigned int nr_xsegments = 1;
struct segpriv {
goto out;
}
+ /*
if (segdev->segment) {
XSEGLOG("destroying existing segdev segment");
r = segdev_destroy_segment(segdev);
if (r)
goto out;
}
+ */
XSEGLOG("creating segdev segment size %llu", size);
r = segdev_create_segment(segdev, size, 1);
if (r)
- goto out;
+ goto out_put;
- segdev_put(segdev);
r = 0;
+out_put:
+ segdev_put(segdev);
out:
return r;
}
return r;
}
-static void *segdev_map(const char *name, uint64_t size)
+static void *segdev_map(const char *name, uint64_t size, struct xseg *seg)
{
struct xseg *xseg = NULL;
/* map() holds a reference to the segment */
struct segdev *dev = segdev_get(0);
+ struct segpriv *priv;
int r;
r = IS_ERR(dev) ? PTR_ERR(dev) : 0;
if (r)
if (size > dev->segsize)
goto out;
+ priv = dev->priv;
+ if (priv->segno >= nr_xsegments)
+ goto out;
+
+// if (seg)
+// xsegments[priv->segno] = seg;
+
xseg = (void *)dev->segment;
out:
return xseg;
static void segdev_unmap(void *ptr, uint64_t size)
{
struct segdev *segdev = segdev_get(0);
+ struct segpriv *priv;
int r = IS_ERR(segdev) ? PTR_ERR(segdev) : 0;
if (r)
return;
+ priv = segdev->priv;
+ if (priv->segno >= nr_xsegments)
+ goto out;
+
+// xsegments[priv->segno] = NULL;
+
+out:
/* unmap() releases the reference taken by map() */
segdev_put(segdev);
+
+ segdev_put(segdev);
}
-static void segdev_callback(struct segdev *dev)
+static void segdev_callback(struct segdev *dev, xport portno)
{
struct xseg *xseg;
struct segpriv *priv = dev->priv;
struct xseg_private *xpriv;
- uint32_t portno;
- if (priv->segno > nr_xsegments)
+ struct xseg_port *port;
+ struct segdev_signal_desc *ssd;
+
+ xseg = xsegments[portno];
+ if (!xseg)
+ return;
+ if (priv->segno >= nr_xsegments)
return;
- if (dev->buffer_index != sizeof(uint32_t)) {
- WARN_ON(1);
+ xpriv = xseg->priv;
+ port = xseg_get_port(xseg, portno);
+ if (!port)
+ return;
+ ssd = xseg_get_signal_desc(xseg, port);
+ if (!ssd || !ssd->waitcue){
return;
}
- portno = *(uint32_t *)dev->buffer;
- xseg = xsegments[priv->segno];
- xpriv = xseg->priv;
- if (xpriv->wakeup)
- xpriv->wakeup(xseg, portno);
+ if (xpriv->wakeup) {
+ xpriv->wakeup(portno);
+ }
+ return;
}
static struct xseg_type xseg_segdev = {
"segdev"
};
-static int segdev_signal_init(void)
+static int segdev_remote_signal_init(void)
{
- struct segdev *segdev = segdev_get(0);
- struct segpriv *segpriv;
- int r = IS_ERR(segdev) ? PTR_ERR(segdev) : 0;
- if (r)
- goto out;
-
- r = -EADDRINUSE;
- if (xsegments[0])
- goto out;
+ return 0;
+}
- r = -ENOMEM;
- segpriv = kmalloc(sizeof(struct segpriv), GFP_KERNEL);
- if (!segpriv)
- goto out;
+static void segdev_remote_signal_quit(void)
+{
+ return;
+}
- segpriv->segno = 0;
- segdev->callback = segdev_callback;
- segdev->priv = segpriv;
- r = 0;
-out:
- return r;
+static int segdev_local_signal_init(struct xseg *xseg, xport portno)
+{
+ //assert xsegments[portno] == NULL;
+ xsegments[portno] = xseg;
+ return 0;
}
-static void segdev_signal_quit(void)
+static void segdev_local_signal_quit(struct xseg *xseg, xport portno)
{
- struct segdev *segdev = segdev_get(0);
- int r = IS_ERR(segdev) ? PTR_ERR(segdev) : 0;
- xsegments[0] = NULL;
- if (!r)
- segdev->callback = NULL;
+ //assert xsegments[portno] == xseg;
+ xsegments[portno] = NULL;
return;
}
static int segdev_prepare_wait(struct xseg *xseg, uint32_t portno)
{
- return -1;
+ struct segdev_signal_desc *ssd;
+ struct xseg_port *port = xseg_get_port(xseg, portno);
+ if (!port)
+ return -1;
+ ssd = xseg_get_signal_desc(xseg, port);
+ if (!ssd)
+ return -1;
+ /* true/false value */
+ ssd->waitcue = 1;
+ return 0;
}
static int segdev_cancel_wait(struct xseg *xseg, uint32_t portno)
{
- return -1;
+ struct segdev_signal_desc *ssd;
+ struct xseg_port *port = xseg_get_port(xseg, portno);
+ if (!port)
+ return -1;
+ ssd = xseg_get_signal_desc(xseg, port);
+ if (!ssd)
+ return -1;
+ /* true/false value */
+ ssd->waitcue = 0;
+ return -0;
}
-static int segdev_wait_signal(struct xseg *xseg, uint32_t timeout)
+static int segdev_wait_signal(struct xseg *xseg, void *sd, uint32_t timeout)
{
return -1;
}
return -1;
}
+static int segdev_init_signal_desc(struct xseg *xseg, void *sd)
+{
+ struct segdev_signal_desc *ssd = sd;
+ if (!ssd)
+ return -1;
+ ssd->waitcue = 0;
+ return 0;
+}
+
+static void segdev_quit_signal_desc(struct xseg *xseg, void *sd)
+{
+ return;
+}
+
+static void *segdev_alloc_data(struct xseg *xseg)
+{
+ struct xobject_h *sd_h = xseg_get_objh(xseg, MAGIC_SEGDEV_SD,
+ sizeof(struct segdev_signal_desc));
+ return sd_h;
+}
+
+static void segdev_free_data(struct xseg *xseg, void *data)
+{
+ if (data)
+ xseg_put_objh(xseg, (struct xobject_h *)data);
+}
+
+static void *segdev_alloc_signal_desc(struct xseg *xseg, void *data)
+{
+ struct segdev_signal_desc *ssd;
+ struct xobject_h *sd_h = (struct xobject_h *) data;
+ if (!sd_h)
+ return NULL;
+ ssd = xobj_get_obj(sd_h, X_ALLOC);
+ if (!ssd)
+ return NULL;
+ ssd->waitcue = 0;
+ return ssd;
+}
+
+static void segdev_free_signal_desc(struct xseg *xseg, void *data, void *sd)
+{
+ struct xobject_h *sd_h = (struct xobject_h *) data;
+ if (!sd_h)
+ return;
+ if (sd)
+ xobj_put_obj(sd_h, sd);
+ return;
+}
+
static struct xseg_peer xseg_peer_segdev = {
/* xseg signal operations */
{
- .signal_init = segdev_signal_init,
- .signal_quit = segdev_signal_quit,
+ .init_signal_desc = segdev_init_signal_desc,
+ .quit_signal_desc = segdev_quit_signal_desc,
+ .alloc_data = segdev_alloc_data,
+ .free_data = segdev_free_data,
+ .alloc_signal_desc = segdev_alloc_signal_desc,
+ .free_signal_desc = segdev_free_signal_desc,
+ .local_signal_init = segdev_local_signal_init,
+ .local_signal_quit = segdev_local_signal_quit,
+ .remote_signal_init = segdev_remote_signal_init,
+ .remote_signal_quit = segdev_remote_signal_quit,
.cancel_wait = segdev_cancel_wait,
.prepare_wait = segdev_prepare_wait,
.wait_signal = segdev_wait_signal,
static int segdev_init(void)
{
+ struct segdev *segdev;
+ struct segpriv *segpriv;
int r;
XSEGLOG("registering xseg types");
r = xseg_register_peer(&xseg_peer_segdev);
if (r)
goto err1;
+
+ segdev = segdev_get(0);
+ r = IS_ERR(segdev) ? PTR_ERR(segdev) : 0;
+ if (r)
+ goto err2;
+ r = -ENOMEM;
+ segpriv = kmalloc(sizeof(struct segpriv), GFP_KERNEL);
+ if (!segpriv)
+ goto err3;
+
+ segpriv->segno = 0;
+ segdev->callback = segdev_callback;
+ segdev->priv = segpriv;
+
+ segdev_put(segdev);
return 0;
+
+err3:
+ segdev_put(segdev);
+err2:
+ xseg_unregister_peer(xseg_peer_segdev.name);
err1:
xseg_unregister_type(xseg_segdev.name);
err0:
static int segdev_quit(void)
{
- struct segdev *segdev;
-
- /* make sure to unmap the segment first */
- segdev = segdev_get(0);
- clear_bit(SEGDEV_RESERVED, &segdev->flags);
- segdev_put(segdev);
-
+ struct segdev *segdev = segdev_get(0);
+ int r = IS_ERR(segdev) ? PTR_ERR(segdev) : 0;
+ if (!r){
+ /* make sure to unmap the segment first */
+ clear_bit(SEGDEV_RESERVED, &segdev->flags);
+ segdev->callback = NULL;
+ //FIXME what aboud segdev->priv?
+ segdev_put(segdev);
+ }
xseg_unregister_peer(xseg_peer_segdev.name);
xseg_unregister_type(xseg_segdev.name);
projects / archipelago / blobdiff