Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 129 insertions, 0 deletions

diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
new file mode 100644
index 0000000000..b1beecc7a0
--- /dev/null
+++ b/drivers/s390/char/raw3270.h
@@ -0,0 +1,129 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * IBM/3270 Driver
+ *
+ * Author(s):
+ *   Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
+ *   Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *     Copyright IBM Corp. 2003, 2009
+ */
+
+#include <uapi/asm/raw3270.h>
+#include <asm/idals.h>
+#include <asm/ioctl.h>
+
+struct raw3270;
+struct raw3270_view;
+extern struct class *class3270;
+
+/* 3270 CCW request */
+struct raw3270_request {
+	struct list_head list;		/* list head for request queueing. */
+	struct raw3270_view *view;	/* view of this request */
+	struct ccw1 ccw;		/* single ccw. */
+	void *buffer;			/* output buffer. */
+	size_t size;			/* size of output buffer. */
+	int rescnt;			/* residual count from devstat. */
+	int rc;				/* return code for this request. */
+
+	/* Callback for delivering final status. */
+	void (*callback)(struct raw3270_request *rq, void *data);
+	void *callback_data;
+};
+
+struct raw3270_request *raw3270_request_alloc(size_t size);
+void raw3270_request_free(struct raw3270_request *rq);
+int raw3270_request_reset(struct raw3270_request *rq);
+void raw3270_request_set_cmd(struct raw3270_request *rq, u8 cmd);
+int  raw3270_request_add_data(struct raw3270_request *rq, void *data, size_t size);
+void raw3270_request_set_data(struct raw3270_request *rq, void *data, size_t size);
+void raw3270_request_set_idal(struct raw3270_request *rq, struct idal_buffer *ib);
+
+static inline int
+raw3270_request_final(struct raw3270_request *rq)
+{
+	return list_empty(&rq->list);
+}
+
+void raw3270_buffer_address(struct raw3270 *, char *, int, int);
+
+/*
+ * Functions of a 3270 view.
+ */
+struct raw3270_fn {
+	int  (*activate)(struct raw3270_view *rq);
+	void (*deactivate)(struct raw3270_view *rq);
+	void (*intv)(struct raw3270_view *view,
+		     struct raw3270_request *rq, struct irb *ib);
+	void (*release)(struct raw3270_view *view);
+	void (*free)(struct raw3270_view *view);
+	void (*resize)(struct raw3270_view *view,
+		       int new_model, int new_cols, int new_rows,
+		       int old_model, int old_cols, int old_rows);
+};
+
+/*
+ * View structure chaining. The raw3270_view structure is meant to
+ * be embedded at the start of the real view data structure, e.g.:
+ *   struct example {
+ *     struct raw3270_view view;
+ *     ...
+ *   };
+ */
+struct raw3270_view {
+	struct list_head list;
+	spinlock_t lock; /* protects members of view */
+#define RAW3270_VIEW_LOCK_IRQ	0
+#define RAW3270_VIEW_LOCK_BH	1
+	atomic_t ref_count;
+	struct raw3270 *dev;
+	struct raw3270_fn *fn;
+	unsigned int model;
+	unsigned int rows, cols;	/* # of rows & colums of the view */
+	unsigned char *ascebc;		/* ascii -> ebcdic table */
+};
+
+int raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor, int subclass);
+int raw3270_view_lock_unavailable(struct raw3270_view *view);
+int raw3270_activate_view(struct raw3270_view *view);
+void raw3270_del_view(struct raw3270_view *view);
+void raw3270_deactivate_view(struct raw3270_view *view);
+struct raw3270_view *raw3270_find_view(struct raw3270_fn *fn, int minor);
+int raw3270_start(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_start_irq(struct raw3270_view *view, struct raw3270_request *rq);
+int raw3270_reset(struct raw3270_view *view);
+struct raw3270_view *raw3270_view(struct raw3270_view *view);
+int raw3270_view_active(struct raw3270_view *view);
+int raw3270_start_request(struct raw3270_view *view, struct raw3270_request *rq,
+			  int cmd, void *data, size_t len);
+void raw3270_read_modified_cb(struct raw3270_request *rq, void *data);
+
+/* Reference count inliner for view structures. */
+static inline void
+raw3270_get_view(struct raw3270_view *view)
+{
+	atomic_inc(&view->ref_count);
+}
+
+extern wait_queue_head_t raw3270_wait_queue;
+
+static inline void
+raw3270_put_view(struct raw3270_view *view)
+{
+	if (atomic_dec_return(&view->ref_count) == 0)
+		wake_up(&raw3270_wait_queue);
+}
+
+struct raw3270 *raw3270_setup_console(void);
+void raw3270_wait_cons_dev(struct raw3270 *rp);
+
+/* Notifier for device addition/removal */
+struct raw3270_notifier {
+	struct list_head list;
+	void (*create)(int minor);
+	void (*destroy)(int minor);
+};
+
+int raw3270_register_notifier(struct raw3270_notifier *notifier);
+void raw3270_unregister_notifier(struct raw3270_notifier *notifier);