[S390] qdio: new qdio driver.

List of major changes:
- split qdio driver into several files
- seperation of thin interrupt code
- improved handling for multiple thin interrupt devices
- inbound and outbound processing now always runs in tasklet context
- significant less tasklet schedules per interrupt needed
- merged qebsm with non-qebsm handling
- cleanup qdio interface and added kerneldoc
- coding style

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Reviewed-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

drivers/s390/cio/qdio_debug.h

@@ -0,0 +1,91 @@
+/*
+ *  drivers/s390/cio/qdio_debug.h
+ *
+ *  Copyright IBM Corp. 2008
+ *
+ *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
+ */
+#ifndef QDIO_DEBUG_H
+#define QDIO_DEBUG_H
+
+#include <asm/debug.h>
+#include <asm/qdio.h>
+#include "qdio.h"
+
+#define QDIO_DBF_HEX(ex, name, level, addr, len) \
+	do { \
+	if (ex) \
+		debug_exception(qdio_dbf_##name, level, (void *)(addr), len); \
+	else \
+		debug_event(qdio_dbf_##name, level, (void *)(addr), len); \
+	} while (0)
+#define QDIO_DBF_TEXT(ex, name, level, text) \
+	do { \
+	if (ex) \
+		debug_text_exception(qdio_dbf_##name, level, text); \
+	else \
+		debug_text_event(qdio_dbf_##name, level, text); \
+	} while (0)
+
+#define QDIO_DBF_HEX0(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 0, addr, len)
+#define QDIO_DBF_HEX1(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 1, addr, len)
+#define QDIO_DBF_HEX2(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 2, addr, len)
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_HEX3(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 3, addr, len)
+#define QDIO_DBF_HEX4(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 4, addr, len)
+#define QDIO_DBF_HEX5(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 5, addr, len)
+#define QDIO_DBF_HEX6(ex, name, addr, len) QDIO_DBF_HEX(ex, name, 6, addr, len)
+#else
+#define QDIO_DBF_HEX3(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX4(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX5(ex, name, addr, len) do {} while (0)
+#define QDIO_DBF_HEX6(ex, name, addr, len) do {} while (0)
+#endif /* CONFIG_QDIO_DEBUG */
+
+#define QDIO_DBF_TEXT0(ex, name, text) QDIO_DBF_TEXT(ex, name, 0, text)
+#define QDIO_DBF_TEXT1(ex, name, text) QDIO_DBF_TEXT(ex, name, 1, text)
+#define QDIO_DBF_TEXT2(ex, name, text) QDIO_DBF_TEXT(ex, name, 2, text)
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_TEXT3(ex, name, text) QDIO_DBF_TEXT(ex, name, 3, text)
+#define QDIO_DBF_TEXT4(ex, name, text) QDIO_DBF_TEXT(ex, name, 4, text)
+#define QDIO_DBF_TEXT5(ex, name, text) QDIO_DBF_TEXT(ex, name, 5, text)
+#define QDIO_DBF_TEXT6(ex, name, text) QDIO_DBF_TEXT(ex, name, 6, text)
+#else
+#define QDIO_DBF_TEXT3(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT4(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT5(ex, name, text) do {} while (0)
+#define QDIO_DBF_TEXT6(ex, name, text) do {} while (0)
+#endif /* CONFIG_QDIO_DEBUG */
+
+/* s390dbf views */
+#define QDIO_DBF_SETUP_LEN		8
+#define QDIO_DBF_SETUP_PAGES		4
+#define QDIO_DBF_SETUP_NR_AREAS		1
+
+#define QDIO_DBF_TRACE_LEN		8
+#define QDIO_DBF_TRACE_NR_AREAS		2
+
+#ifdef CONFIG_QDIO_DEBUG
+#define QDIO_DBF_TRACE_PAGES		16
+#define QDIO_DBF_SETUP_LEVEL		6
+#define QDIO_DBF_TRACE_LEVEL		4
+#else /* !CONFIG_QDIO_DEBUG */
+#define QDIO_DBF_TRACE_PAGES		4
+#define QDIO_DBF_SETUP_LEVEL		2
+#define QDIO_DBF_TRACE_LEVEL		2
+#endif /* CONFIG_QDIO_DEBUG */
+
+extern debug_info_t *qdio_dbf_setup;
+extern debug_info_t *qdio_dbf_trace;
+
+void qdio_allocate_do_dbf(struct qdio_initialize *init_data);
+void debug_print_bstat(struct qdio_q *q);
+void qdio_setup_debug_entries(struct qdio_irq *irq_ptr,
+			      struct ccw_device *cdev);
+void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr,
+				 struct ccw_device *cdev);
+int qdio_debug_init(void);
+void qdio_debug_exit(void);
+#endif