Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 192 insertions, 0 deletions

diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
new file mode 100644
index 00000000000..3eb231af5d5
--- /dev/null
+++ b/include/asm-s390/ccwdev.h
@@ -0,0 +1,192 @@
+/*
+ *  include/asm-s390/ccwdev.h
+ *  include/asm-s390x/ccwdev.h
+ *
+ *    Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Arnd Bergmann <arndb@de.ibm.com>
+ *
+ *  Interface for CCW device drivers
+ */
+#ifndef _S390_CCWDEV_H_
+#define _S390_CCWDEV_H_
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+
+/* structs from asm/cio.h */
+struct irb;
+struct ccw1;
+
+/* simplified initializers for struct ccw_device:
+ * CCW_DEVICE and CCW_DEVICE_DEVTYPE initialize one
+ * entry in your MODULE_DEVICE_TABLE and set the match_flag correctly */
+#define CCW_DEVICE(cu, cum) 						\
+	.cu_type=(cu), .cu_model=(cum),					\
+	.match_flags=(CCW_DEVICE_ID_MATCH_CU_TYPE			\
+		   | (cum ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0))
+
+#define CCW_DEVICE_DEVTYPE(cu, cum, dev, devm)				\
+	.cu_type=(cu), .cu_model=(cum), .dev_type=(dev), .dev_model=(devm),\
+	.match_flags=CCW_DEVICE_ID_MATCH_CU_TYPE			\
+		   | ((cum) ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0) 	\
+		   | CCW_DEVICE_ID_MATCH_DEVICE_TYPE			\
+		   | ((devm) ? CCW_DEVICE_ID_MATCH_DEVICE_MODEL : 0)
+
+/* scan through an array of device ids and return the first
+ * entry that matches the device.
+ *
+ * the array must end with an entry containing zero match_flags
+ */
+static inline const struct ccw_device_id *
+ccw_device_id_match(const struct ccw_device_id *array,
+			const struct ccw_device_id *match)
+{
+	const struct ccw_device_id *id = array;
+
+	for (id = array; id->match_flags; id++) {
+		if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_TYPE)
+		    && (id->cu_type != match->cu_type))
+			continue;
+
+		if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_MODEL)
+		    && (id->cu_model != match->cu_model))
+			continue;
+
+		if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_TYPE)
+		    && (id->dev_type != match->dev_type))
+			continue;
+
+		if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_MODEL)
+		    && (id->dev_model != match->dev_model))
+			continue;
+
+		return id;
+	}
+
+	return 0;
+}
+
+/* The struct ccw device is our replacement for the globally accessible
+ * ioinfo array. ioinfo will mutate into a subchannel device later.
+ *
+ * Reference: Documentation/s390/driver-model.txt */
+struct ccw_device {
+	spinlock_t *ccwlock;
+	struct ccw_device_private *private;	/* cio private information */
+	struct ccw_device_id id;	/* id of this device, driver_info is
+					   set by ccw_find_driver */
+	struct ccw_driver *drv;		/* */
+	struct device dev;		/* */
+	int online;
+	/* This is sick, but a driver can have different interrupt handlers 
+	   for different ccw_devices (multi-subchannel drivers)... */
+	void (*handler) (struct ccw_device *, unsigned long, struct irb *);
+};
+
+
+/* Each ccw driver registers with the ccw root bus */
+struct ccw_driver {
+	struct module *owner;		/* for automatic MOD_INC_USE_COUNT   */
+	struct ccw_device_id *ids;	/* probe driver with these devs      */
+	int (*probe) (struct ccw_device *); /* ask driver to probe dev 	     */
+	void (*remove) (struct ccw_device *);
+					/* device is no longer available     */
+	int (*set_online) (struct ccw_device *);
+	int (*set_offline) (struct ccw_device *);
+	int (*notify) (struct ccw_device *, int);
+	struct device_driver driver;	/* higher level structure, don't init
+					   this from your driver	     */
+	char *name;
+};
+
+extern struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
+					      const char *bus_id);
+
+/* devices drivers call these during module load and unload.
+ * When a driver is registered, its probe method is called
+ * when new devices for its type pop up */
+extern int  ccw_driver_register   (struct ccw_driver *driver);
+extern void ccw_driver_unregister (struct ccw_driver *driver);
+
+struct ccw1;
+
+extern int ccw_device_set_options(struct ccw_device *, unsigned long);
+
+/* Allow for i/o completion notification after primary interrupt status. */
+#define CCWDEV_EARLY_NOTIFICATION	0x0001
+/* Report all interrupt conditions. */
+#define CCWDEV_REPORT_ALL	 	0x0002
+/* Try to perform path grouping. */
+#define CCWDEV_DO_PATHGROUP             0x0004
+/* Allow forced onlining of boxed devices. */
+#define CCWDEV_ALLOW_FORCE              0x0008
+
+/*
+ * ccw_device_start()
+ *
+ *  Start a S/390 channel program. When the interrupt arrives, the
+ *  IRQ handler is called, either immediately, delayed (dev-end missing,
+ *  or sense required) or never (no IRQ handler registered).
+ *  Depending on the action taken, ccw_device_start() returns:  
+ *                           0	     - Success
+ *			     -EBUSY  - Device busy, or status pending
+ *			     -ENODEV - Device not operational
+ *                           -EINVAL - Device invalid for operation
+ */
+extern int ccw_device_start(struct ccw_device *, struct ccw1 *,
+			    unsigned long, __u8, unsigned long);
+/*
+ * ccw_device_start_timeout()
+ *
+ * This function notifies the device driver if the channel program has not
+ * completed during the specified time. If a timeout occurs, the channel
+ * program is terminated via xsch(), hsch() or csch().
+ */
+extern int ccw_device_start_timeout(struct ccw_device *, struct ccw1 *,
+				    unsigned long, __u8, unsigned long, int);
+/*
+ * ccw_device_start_key()
+ * ccw_device_start_key_timeout()
+ *
+ * Same as ccw_device_start() and ccw_device_start_timeout(), except a
+ * storage key != default key can be provided for the I/O.
+ */
+extern int ccw_device_start_key(struct ccw_device *, struct ccw1 *,
+				unsigned long, __u8, __u8, unsigned long);
+extern int ccw_device_start_timeout_key(struct ccw_device *, struct ccw1 *,
+					unsigned long, __u8, __u8,
+					unsigned long, int);
+
+
+extern int ccw_device_resume(struct ccw_device *);
+extern int ccw_device_halt(struct ccw_device *, unsigned long);
+extern int ccw_device_clear(struct ccw_device *, unsigned long);
+
+extern int read_dev_chars(struct ccw_device *cdev, void **buffer, int length);
+extern int read_conf_data(struct ccw_device *cdev, void **buffer, int *length);
+extern int read_conf_data_lpm(struct ccw_device *cdev, void **buffer,
+			      int *length, __u8 lpm);
+
+extern int ccw_device_set_online(struct ccw_device *cdev);
+extern int ccw_device_set_offline(struct ccw_device *cdev);
+
+
+extern struct ciw *ccw_device_get_ciw(struct ccw_device *, __u32 cmd);
+extern __u8 ccw_device_get_path_mask(struct ccw_device *);
+
+#define get_ccwdev_lock(x) (x)->ccwlock
+
+#define to_ccwdev(n) container_of(n, struct ccw_device, dev)
+#define to_ccwdrv(n) container_of(n, struct ccw_driver, driver)
+
+extern struct ccw_device *ccw_device_probe_console(void);
+
+// FIXME: these have to go
+extern int _ccw_device_get_device_number(struct ccw_device *);
+extern int _ccw_device_get_subchannel_number(struct ccw_device *);
+
+extern struct device *s390_root_dev_register(const char *);
+extern void s390_root_dev_unregister(struct device *);
+
+extern void *ccw_device_get_chp_desc(struct ccw_device *, int);
+#endif /* _S390_CCWDEV_H_ */