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, 158 insertions, 0 deletions

diff --git a/drivers/s390/net/ctcm_dbug.h b/drivers/s390/net/ctcm_dbug.h
new file mode 100644
index 000000000000..fdff34fe59a2
--- /dev/null
+++ b/drivers/s390/net/ctcm_dbug.h
@@ -0,0 +1,158 @@
+/*
+ *      drivers/s390/net/ctcm_dbug.h
+ *
+ *      Copyright IBM Corp. 2001, 2007
+ *      Authors:        Peter Tiedemann (ptiedem@de.ibm.com)
+ *
+ */
+
+#ifndef _CTCM_DBUG_H_
+#define _CTCM_DBUG_H_
+
+/*
+ * Debug Facility stuff
+ */
+
+#include <asm/debug.h>
+
+#ifdef DEBUG
+ #define do_debug 1
+#else
+ #define do_debug 0
+#endif
+#ifdef DEBUGDATA
+ #define do_debug_data 1
+#else
+ #define do_debug_data 0
+#endif
+#ifdef DEBUGCCW
+ #define do_debug_ccw 1
+#else
+ #define do_debug_ccw 0
+#endif
+
+/* define dbf debug levels similar to kernel msg levels */
+#define CTC_DBF_ALWAYS  0       /* always print this                    */
+#define CTC_DBF_EMERG   0       /* system is unusable                   */
+#define CTC_DBF_ALERT   1       /* action must be taken immediately     */
+#define CTC_DBF_CRIT    2       /* critical conditions                  */
+#define CTC_DBF_ERROR   3       /* error conditions                     */
+#define CTC_DBF_WARN    4       /* warning conditions                   */
+#define CTC_DBF_NOTICE  5       /* normal but significant condition     */
+#define CTC_DBF_INFO    5       /* informational                        */
+#define CTC_DBF_DEBUG   6       /* debug-level messages                 */
+
+DECLARE_PER_CPU(char[256], ctcm_dbf_txt_buf);
+
+enum ctcm_dbf_names {
+        CTCM_DBF_SETUP,
+        CTCM_DBF_ERROR,
+        CTCM_DBF_TRACE,
+        CTCM_DBF_MPC_SETUP,
+        CTCM_DBF_MPC_ERROR,
+        CTCM_DBF_MPC_TRACE,
+        CTCM_DBF_INFOS  /* must be last element */
+};
+
+struct ctcm_dbf_info {
+        char name[DEBUG_MAX_NAME_LEN];
+        int pages;
+        int areas;
+        int len;
+        int level;
+        debug_info_t *id;
+};
+
+extern struct ctcm_dbf_info ctcm_dbf[CTCM_DBF_INFOS];
+
+int ctcm_register_dbf_views(void);
+void ctcm_unregister_dbf_views(void);
+
+static inline const char *strtail(const char *s, int n)
+{
+        int l = strlen(s);
+        return (l > n) ? s + (l - n) : s;
+}
+
+/* sort out levels early to avoid unnecessary sprintfs */
+static inline int ctcm_dbf_passes(debug_info_t *dbf_grp, int level)
+{
+        return (dbf_grp->level >= level);
+}
+
+#define CTCM_FUNTAIL strtail((char *)__func__, 16)
+
+#define CTCM_DBF_TEXT(name, level, text) \
+        do { \
+                debug_text_event(ctcm_dbf[CTCM_DBF_##name].id, level, text); \
+        } while (0)
+
+#define CTCM_DBF_HEX(name, level, addr, len) \
+        do { \
+                debug_event(ctcm_dbf[CTCM_DBF_##name].id, \
+                                        level, (void *)(addr), len); \
+        } while (0)
+
+#define CTCM_DBF_TEXT_(name, level, text...) \
+        do { \
+                if (ctcm_dbf_passes(ctcm_dbf[CTCM_DBF_##name].id, level)) { \
+                        char *ctcm_dbf_txt_buf = \
+                                         get_cpu_var(ctcm_dbf_txt_buf); \
+                        sprintf(ctcm_dbf_txt_buf, text); \
+                        debug_text_event(ctcm_dbf[CTCM_DBF_##name].id, \
+                                        level, ctcm_dbf_txt_buf); \
+                        put_cpu_var(ctcm_dbf_txt_buf); \
+                } \
+        } while (0)
+
+/*
+ * cat : one of {setup, mpc_setup, trace, mpc_trace, error, mpc_error}.
+ * dev : netdevice with valid name field.
+ * text: any text string.
+ */
+#define CTCM_DBF_DEV_NAME(cat, dev, text) \
+        do { \
+                CTCM_DBF_TEXT_(cat, CTC_DBF_INFO, "%s(%s) : %s", \
+                        CTCM_FUNTAIL, dev->name, text); \
+        } while (0)
+
+#define MPC_DBF_DEV_NAME(cat, dev, text) \
+        do { \
+                CTCM_DBF_TEXT_(MPC_##cat, CTC_DBF_INFO, "%s(%s) : %s", \
+                        CTCM_FUNTAIL, dev->name, text); \
+        } while (0)
+
+#define CTCMY_DBF_DEV_NAME(cat, dev, text) \
+        do { \
+                if (IS_MPCDEV(dev)) \
+                        MPC_DBF_DEV_NAME(cat, dev, text); \
+                else \
+                        CTCM_DBF_DEV_NAME(cat, dev, text); \
+        } while (0)
+
+/*
+ * cat : one of {setup, mpc_setup, trace, mpc_trace, error, mpc_error}.
+ * dev : netdevice.
+ * text: any text string.
+ */
+#define CTCM_DBF_DEV(cat, dev, text) \
+        do { \
+                CTCM_DBF_TEXT_(cat, CTC_DBF_INFO, "%s(%p) : %s", \
+                        CTCM_FUNTAIL, dev, text); \
+        } while (0)
+
+#define MPC_DBF_DEV(cat, dev, text) \
+        do { \
+                CTCM_DBF_TEXT_(MPC_##cat, CTC_DBF_INFO, "%s(%p) : %s", \
+                        CTCM_FUNTAIL, dev, text); \
+        } while (0)
+
+#define CTCMY_DBF_DEV(cat, dev, text) \
+        do { \
+                if (IS_MPCDEV(dev)) \
+                        MPC_DBF_DEV(cat, dev, text); \
+                else \
+                        CTCM_DBF_DEV(cat, dev, text); \
+        } while (0)
+
+#endif