ctcm: infrastructure for replaced ctc driver

ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.

This new ctcm driver replaces the existing ctc driver.

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/s390/net/ctcm_dbug.c b/drivers/s390/net/ctcm_dbug.c
new file mode 100644
index 000000000000..8eb25d00b2e7
--- /dev/null
+++ b/drivers/s390/net/ctcm_dbug.c
@@ -0,0 +1,67 @@
+/*
+ *	drivers/s390/net/ctcm_dbug.c
+ *
+ *	Copyright IBM Corp. 2001, 2007
+ *	Authors:	Peter Tiedemann (ptiedem@de.ibm.com)
+ *
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/ctype.h>
+#include <linux/sysctl.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include "ctcm_dbug.h"
+
+/*
+ * Debug Facility Stuff
+ */
+
+DEFINE_PER_CPU(char[256], ctcm_dbf_txt_buf);
+
+struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS] = {
+	[CTCM_DBF_SETUP]	= {"ctc_setup", 8, 1, 64, 5, NULL},
+	[CTCM_DBF_ERROR]	= {"ctc_error", 8, 1, 64, 3, NULL},
+	[CTCM_DBF_TRACE]	= {"ctc_trace", 8, 1, 64, 3, NULL},
+	[CTCM_DBF_MPC_SETUP]	= {"mpc_setup", 8, 1, 64, 5, NULL},
+	[CTCM_DBF_MPC_ERROR]	= {"mpc_error", 8, 1, 64, 3, NULL},
+	[CTCM_DBF_MPC_TRACE]	= {"mpc_trace", 8, 1, 64, 3, NULL},
+};
+
+void ctcm_unregister_dbf_views(void)
+{
+	int x;
+	for (x = 0; x < CTCM_DBF_INFOS; x++) {
+		debug_unregister(ctcm_dbf[x].id);
+		ctcm_dbf[x].id = NULL;
+	}
+}
+
+int ctcm_register_dbf_views(void)
+{
+	int x;
+	for (x = 0; x < CTCM_DBF_INFOS; x++) {
+		/* register the areas */
+		ctcm_dbf[x].id = debug_register(ctcm_dbf[x].name,
+						ctcm_dbf[x].pages,
+						ctcm_dbf[x].areas,
+						ctcm_dbf[x].len);
+		if (ctcm_dbf[x].id == NULL) {
+			ctcm_unregister_dbf_views();
+			return -ENOMEM;
+		}
+
+		/* register a view */
+		debug_register_view(ctcm_dbf[x].id, &debug_hex_ascii_view);
+		/* set a passing level */
+		debug_set_level(ctcm_dbf[x].id, ctcm_dbf[x].level);
+	}
+
+	return 0;
+}
+