Linux-2.6.12-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, 155 insertions, 0 deletions

diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
new file mode 100644
index 00000000000..2004a6c4938
--- /dev/null
+++ b/drivers/s390/cio/css.h
@@ -0,0 +1,155 @@
+#ifndef _CSS_H
+#define _CSS_H
+
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+
+#include <asm/cio.h>
+
+/*
+ * path grouping stuff
+ */
+#define SPID_FUNC_SINGLE_PATH	   0x00
+#define SPID_FUNC_MULTI_PATH	   0x80
+#define SPID_FUNC_ESTABLISH	   0x00
+#define SPID_FUNC_RESIGN	   0x40
+#define SPID_FUNC_DISBAND	   0x20
+
+#define SNID_STATE1_RESET	   0
+#define SNID_STATE1_UNGROUPED	   2
+#define SNID_STATE1_GROUPED	   3
+
+#define SNID_STATE2_NOT_RESVD	   0
+#define SNID_STATE2_RESVD_ELSE	   2
+#define SNID_STATE2_RESVD_SELF	   3
+
+#define SNID_STATE3_MULTI_PATH	   1
+#define SNID_STATE3_SINGLE_PATH	   0
+
+struct path_state {
+	__u8  state1 : 2;	/* path state value 1 */
+	__u8  state2 : 2;	/* path state value 2 */
+	__u8  state3 : 1;	/* path state value 3 */
+	__u8  resvd  : 3;	/* reserved */
+} __attribute__ ((packed));
+
+struct pgid {
+	union {
+		__u8 fc;   	/* SPID function code */
+		struct path_state ps;	/* SNID path state */
+	} inf;
+	__u32 cpu_addr	: 16;	/* CPU address */
+	__u32 cpu_id	: 24;	/* CPU identification */
+	__u32 cpu_model : 16;	/* CPU model */
+	__u32 tod_high;		/* high word TOD clock */
+} __attribute__ ((packed));
+
+extern struct pgid global_pgid;
+
+#define MAX_CIWS 8
+
+/*
+ * sense-id response buffer layout
+ */
+struct senseid {
+	/* common part */
+	__u8  reserved;     	/* always 0x'FF' */
+	__u16 cu_type;	     	/* control unit type */
+	__u8  cu_model;     	/* control unit model */
+	__u16 dev_type;     	/* device type */
+	__u8  dev_model;    	/* device model */
+	__u8  unused;	     	/* padding byte */
+	/* extended part */
+	struct ciw ciw[MAX_CIWS];	/* variable # of CIWs */
+}  __attribute__ ((packed,aligned(4)));
+
+struct ccw_device_private {
+	int state;		/* device state */
+	atomic_t onoff;
+	unsigned long registered;
+	__u16 devno;		/* device number */
+	__u16 irq;		/* subchannel number */
+	__u8 imask;		/* lpm mask for SNID/SID/SPGID */
+	int iretry;		/* retry counter SNID/SID/SPGID */
+	struct {
+		unsigned int fast:1;	/* post with "channel end" */
+		unsigned int repall:1;	/* report every interrupt status */
+		unsigned int pgroup:1;  /* do path grouping */
+		unsigned int force:1;   /* allow forced online */
+	} __attribute__ ((packed)) options;
+	struct {
+		unsigned int pgid_single:1; /* use single path for Set PGID */
+		unsigned int esid:1;        /* Ext. SenseID supported by HW */
+		unsigned int dosense:1;	    /* delayed SENSE required */
+		unsigned int doverify:1;    /* delayed path verification */
+		unsigned int donotify:1;    /* call notify function */
+		unsigned int recog_done:1;  /* dev. recog. complete */
+		unsigned int fake_irb:1;    /* deliver faked irb */
+	} __attribute__((packed)) flags;
+	unsigned long intparm;	/* user interruption parameter */
+	struct qdio_irq *qdio_data;
+	struct irb irb;		/* device status */
+	struct senseid senseid;	/* SenseID info */
+	struct pgid pgid;	/* path group ID */
+	struct ccw1 iccws[2];	/* ccws for SNID/SID/SPGID commands */
+	struct work_struct kick_work;
+	wait_queue_head_t wait_q;
+	struct timer_list timer;
+	void *cmb;			/* measurement information */
+	struct list_head cmb_list;	/* list of measured devices */
+	u64 cmb_start_time;		/* clock value of cmb reset */
+	void *cmb_wait;			/* deferred cmb enable/disable */
+};
+
+/*
+ * A css driver handles all subchannels of one type.
+ * Currently, we only care about I/O subchannels (type 0), these
+ * have a ccw_device connected to them.
+ */
+struct css_driver {
+	unsigned int subchannel_type;
+	struct device_driver drv;
+	void (*irq)(struct device *);
+	int (*notify)(struct device *, int);
+	void (*verify)(struct device *);
+	void (*termination)(struct device *);
+};
+
+/*
+ * all css_drivers have the css_bus_type
+ */
+extern struct bus_type css_bus_type;
+extern struct css_driver io_subchannel_driver;
+
+int css_probe_device(int irq);
+extern struct subchannel * get_subchannel_by_schid(int irq);
+extern unsigned int highest_subchannel;
+extern int css_init_done;
+
+#define __MAX_SUBCHANNELS 65536
+
+extern struct bus_type css_bus_type;
+extern struct device css_bus_device;
+
+/* Some helper functions for disconnected state. */
+int device_is_disconnected(struct subchannel *);
+void device_set_disconnected(struct subchannel *);
+void device_trigger_reprobe(struct subchannel *);
+
+/* Helper functions for vary on/off. */
+int device_is_online(struct subchannel *);
+void device_set_waiting(struct subchannel *);
+
+/* Machine check helper function. */
+void device_kill_pending_timer(struct subchannel *);
+
+/* Helper functions to build lists for the slow path. */
+int css_enqueue_subchannel_slow(unsigned long schid);
+void css_walk_subchannel_slow_list(void (*fn)(unsigned long));
+void css_clear_subchannel_slow_list(void);
+int css_slow_subchannels_exist(void);
+extern int need_rescan;
+
+extern struct workqueue_struct *slow_path_wq;
+extern struct work_struct slow_path_work;
+#endif