drivers/s390/cio/qdio.h - kernel/msm-4.9 - Gitiles

 /*
  * linux/drivers/s390/cio/qdio.h
  *
  * Copyright 2000,2008 IBM Corp.
  * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
  *	      Jan Glauber <jang@linux.vnet.ibm.com>
  */
 #ifndef _CIO_QDIO_H
 #define _CIO_QDIO_H

 #include <asm/page.h>
 #include <asm/schid.h>
 #include "chsc.h"

 #define QDIO_BUSY_BIT_PATIENCE		100	/* 100 microseconds */
 #define QDIO_BUSY_BIT_GIVE_UP		2000000	/* 2 seconds = eternity */
 #define QDIO_INPUT_THRESHOLD		500	/* 500 microseconds */

 enum qdio_irq_states {
 	QDIO_IRQ_STATE_INACTIVE,
 	QDIO_IRQ_STATE_ESTABLISHED,
 	QDIO_IRQ_STATE_ACTIVE,
 	QDIO_IRQ_STATE_STOPPED,
 	QDIO_IRQ_STATE_CLEANUP,
 	QDIO_IRQ_STATE_ERR,
 	NR_QDIO_IRQ_STATES,
 };

 /* used as intparm in do_IO */
 #define QDIO_DOING_ESTABLISH	1
 #define QDIO_DOING_ACTIVATE	2
 #define QDIO_DOING_CLEANUP	3

 #define SLSB_STATE_NOT_INIT	0x0
 #define SLSB_STATE_EMPTY	0x1
 #define SLSB_STATE_PRIMED	0x2
 #define SLSB_STATE_HALTED	0xe
 #define SLSB_STATE_ERROR	0xf
 #define SLSB_TYPE_INPUT		0x0
 #define SLSB_TYPE_OUTPUT	0x20
 #define SLSB_OWNER_PROG		0x80
 #define SLSB_OWNER_CU		0x40

 #define SLSB_P_INPUT_NOT_INIT	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_NOT_INIT)  /* 0x80 */
 #define SLSB_P_INPUT_ACK	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY)	   /* 0x81 */
 #define SLSB_CU_INPUT_EMPTY	\
 	(SLSB_OWNER_CU | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY)	   /* 0x41 */
 #define SLSB_P_INPUT_PRIMED	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_PRIMED)	   /* 0x82 */
 #define SLSB_P_INPUT_HALTED	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_HALTED)	   /* 0x8e */
 #define SLSB_P_INPUT_ERROR	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_ERROR)	   /* 0x8f */
 #define SLSB_P_OUTPUT_NOT_INIT	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */
 #define SLSB_P_OUTPUT_EMPTY	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY)	   /* 0xa1 */
 #define SLSB_CU_OUTPUT_PRIMED	\
 	(SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED)	   /* 0x62 */
 #define SLSB_P_OUTPUT_HALTED	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_HALTED)   /* 0xae */
 #define SLSB_P_OUTPUT_ERROR	\
 	(SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_ERROR)	   /* 0xaf */

 #define SLSB_ERROR_DURING_LOOKUP  0xff

 /* additional CIWs returned by extended Sense-ID */
 #define CIW_TYPE_EQUEUE			0x3 /* establish QDIO queues */
 #define CIW_TYPE_AQUEUE			0x4 /* activate QDIO queues */

 /* flags for st qdio sch data */
 #define CHSC_FLAG_QDIO_CAPABILITY	0x80
 #define CHSC_FLAG_VALIDITY		0x40

 /* qdio adapter-characteristics-1 flag */
 #define AC1_SIGA_INPUT_NEEDED		0x40	/* process input queues */
 #define AC1_SIGA_OUTPUT_NEEDED		0x20	/* process output queues */
 #define AC1_SIGA_SYNC_NEEDED		0x10	/* ask hypervisor to sync */
 #define AC1_AUTOMATIC_SYNC_ON_THININT	0x08	/* set by hypervisor */
 #define AC1_AUTOMATIC_SYNC_ON_OUT_PCI	0x04	/* set by hypervisor */
 #define AC1_SC_QEBSM_AVAILABLE		0x02	/* available for subchannel */
 #define AC1_SC_QEBSM_ENABLED		0x01	/* enabled for subchannel */

 #ifdef CONFIG_64BIT
 static inline int do_sqbs(u64 token, unsigned char state, int queue,
 			  int *start, int *count)
 {
 	register unsigned long _ccq asm ("0") = *count;
 	register unsigned long _token asm ("1") = token;
 	unsigned long _queuestart = ((unsigned long)queue << 32) | *start;

 	asm volatile(
 		"	.insn	rsy,0xeb000000008A,%1,0,0(%2)"
 		: "+d" (_ccq), "+d" (_queuestart)
 		: "d" ((unsigned long)state), "d" (_token)
 		: "memory", "cc");
 	*count = _ccq & 0xff;
 	*start = _queuestart & 0xff;

 	return (_ccq >> 32) & 0xff;
 }

 static inline int do_eqbs(u64 token, unsigned char *state, int queue,
 			  int *start, int *count)
 {
 	register unsigned long _ccq asm ("0") = *count;
 	register unsigned long _token asm ("1") = token;
 	unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
 	unsigned long _state = 0;

 	asm volatile(
 		"	.insn	rrf,0xB99c0000,%1,%2,0,0"
 		: "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
 		: "d" (_token)
 		: "memory", "cc");
 	*count = _ccq & 0xff;
 	*start = _queuestart & 0xff;
 	*state = _state & 0xff;

 	return (_ccq >> 32) & 0xff;
 }
 #else
 static inline int do_sqbs(u64 token, unsigned char state, int queue,
 			  int *start, int *count) { return 0; }
 static inline int do_eqbs(u64 token, unsigned char *state, int queue,
 			  int *start, int *count) { return 0; }
 #endif /* CONFIG_64BIT */

 struct qdio_irq;

 struct siga_flag {
 	u8 input:1;
 	u8 output:1;
 	u8 sync:1;
 	u8 no_sync_ti:1;
 	u8 no_sync_out_ti:1;
 	u8 no_sync_out_pci:1;
 	u8:2;
 } __attribute__ ((packed));

 struct chsc_ssqd_area {
 	struct chsc_header request;
 	u16:10;
 	u8 ssid:2;
 	u8 fmt:4;
 	u16 first_sch;
 	u16:16;
 	u16 last_sch;
 	u32:32;
 	struct chsc_header response;
 	u32:32;
 	struct qdio_ssqd_desc qdio_ssqd;
 } __attribute__ ((packed));

 struct scssc_area {
 	struct chsc_header request;
 	u16 operation_code;
 	u16:16;
 	u32:32;
 	u32:32;
 	u64 summary_indicator_addr;
 	u64 subchannel_indicator_addr;
 	u32 ks:4;
 	u32 kc:4;
 	u32:21;
 	u32 isc:3;
 	u32 word_with_d_bit;
 	u32:32;
 	struct subchannel_id schid;
 	u32 reserved[1004];
 	struct chsc_header response;
 	u32:32;
 } __attribute__ ((packed));

 struct qdio_input_q {
 	/* input buffer acknowledgement flag */
 	int polling;

 	/* last time of noticing incoming data */
 	u64 timestamp;

 	/* lock for clearing the acknowledgement */
 	spinlock_t lock;
 };

 struct qdio_output_q {
 	/* failed siga-w attempts*/
 	atomic_t busy_siga_counter;

 	/* start time of busy condition */
 	u64 timestamp;

 	/* PCIs are enabled for the queue */
 	int pci_out_enabled;

 	/* timer to check for more outbound work */
 	struct timer_list timer;
 };

 struct qdio_q {
 	struct slsb slsb;
 	union {
 		struct qdio_input_q in;
 		struct qdio_output_q out;
 	} u;

 	/* queue number */
 	int nr;

 	/* bitmask of queue number */
 	int mask;

 	/* input or output queue */
 	int is_input_q;

 	/* list of thinint input queues */
 	struct list_head entry;

 	/* upper-layer program handler */
 	qdio_handler_t (*handler);

 	/*
 	 * inbound: next buffer the program should check for
 	 * outbound: next buffer to check for having been processed
 	 * by the card
 	 */
 	int first_to_check;

 	/* first_to_check of the last time */
 	int last_move_ftc;

 	/* beginning position for calling the program */
 	int first_to_kick;

 	/* number of buffers in use by the adapter */
 	atomic_t nr_buf_used;

 	struct qdio_irq *irq_ptr;
 	struct tasklet_struct tasklet;

 	/* error condition during a data transfer */
 	unsigned int qdio_error;

 	struct sl *sl;
 	struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];

 	/*
 	 * Warning: Leave this member at the end so it won't be cleared in
 	 * qdio_fill_qs. A page is allocated under this pointer and used for
 	 * slib and sl. slib is 2048 bytes big and sl points to offset
 	 * PAGE_SIZE / 2.
 	 */
 	struct slib *slib;
 } __attribute__ ((aligned(256)));

 struct qdio_irq {
 	struct qib qib;
 	u32 *dsci;		/* address of device state change indicator */
 	struct ccw_device *cdev;

 	unsigned long int_parm;
 	struct subchannel_id schid;
 	unsigned long sch_token;	/* QEBSM facility */

 	enum qdio_irq_states state;

 	struct siga_flag siga_flag;	/* siga sync information from qdioac */

 	int nr_input_qs;
 	int nr_output_qs;

 	struct ccw1 ccw;
 	struct ciw equeue;
 	struct ciw aqueue;

 	struct qdio_ssqd_desc ssqd_desc;

 	void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *);

 	/*
 	 * Warning: Leave these members together at the end so they won't be
 	 * cleared in qdio_setup_irq.
 	 */
 	struct qdr *qdr;
 	unsigned long chsc_page;

 	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
 	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];

 	struct mutex setup_mutex;
 };

 /* helper functions */
 #define queue_type(q)	q->irq_ptr->qib.qfmt

 #define is_thinint_irq(irq) \
 	(irq->qib.qfmt == QDIO_IQDIO_QFMT || \
 	 css_general_characteristics.aif_osa)

 /* the highest iqdio queue is used for multicast */
 static inline int multicast_outbound(struct qdio_q *q)
 {
 	return (q->irq_ptr->nr_output_qs > 1) &&
 	       (q->nr == q->irq_ptr->nr_output_qs - 1);
 }

 static inline unsigned long long get_usecs(void)
 {
 	return monotonic_clock() >> 12;
 }

 #define pci_out_supported(q) \
 	(q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
 #define is_qebsm(q)			(q->irq_ptr->sch_token != 0)

 #define need_siga_sync_thinint(q)	(!q->irq_ptr->siga_flag.no_sync_ti)
 #define need_siga_sync_out_thinint(q)	(!q->irq_ptr->siga_flag.no_sync_out_ti)
 #define need_siga_in(q)			(q->irq_ptr->siga_flag.input)
 #define need_siga_out(q)		(q->irq_ptr->siga_flag.output)
 #define need_siga_sync(q)		(q->irq_ptr->siga_flag.sync)
 #define siga_syncs_out_pci(q)		(q->irq_ptr->siga_flag.no_sync_out_pci)

 #define for_each_input_queue(irq_ptr, q, i)	\
 	for (i = 0, q = irq_ptr->input_qs[0];	\
 		i < irq_ptr->nr_input_qs;	\
 		q = irq_ptr->input_qs[++i])
 #define for_each_output_queue(irq_ptr, q, i)	\
 	for (i = 0, q = irq_ptr->output_qs[0];	\
 		i < irq_ptr->nr_output_qs;	\
 		q = irq_ptr->output_qs[++i])

 #define prev_buf(bufnr)	\
 	((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
 #define next_buf(bufnr)	\
 	((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
 #define add_buf(bufnr, inc) \
 	((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)

 /* prototypes for thin interrupt */
 void qdio_sync_after_thinint(struct qdio_q *q);
 int get_buf_state(struct qdio_q *q, unsigned int bufnr, unsigned char *state);
 void qdio_check_outbound_after_thinint(struct qdio_q *q);
 int qdio_inbound_q_moved(struct qdio_q *q);
 void qdio_kick_inbound_handler(struct qdio_q *q);
 void qdio_stop_polling(struct qdio_q *q);
 int qdio_siga_sync_q(struct qdio_q *q);

 void qdio_setup_thinint(struct qdio_irq *irq_ptr);
 int qdio_establish_thinint(struct qdio_irq *irq_ptr);
 void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
 void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
 void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
 void tiqdio_inbound_processing(unsigned long q);
 int tiqdio_allocate_memory(void);
 void tiqdio_free_memory(void);
 int tiqdio_register_thinints(void);
 void tiqdio_unregister_thinints(void);

 /* prototypes for setup */
 void qdio_inbound_processing(unsigned long data);
 void qdio_outbound_processing(unsigned long data);
 void qdio_outbound_timer(unsigned long data);
 void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
 		      struct irb *irb);
 int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs,
 		     int nr_output_qs);
 void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr);
 int qdio_setup_irq(struct qdio_initialize *init_data);
 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
 				struct ccw_device *cdev);
 void qdio_release_memory(struct qdio_irq *irq_ptr);
 int qdio_setup_init(void);
 void qdio_setup_exit(void);

 #endif /* _CIO_QDIO_H */
	/*
	* linux/drivers/s390/cio/qdio.h
	*
	* Copyright 2000,2008 IBM Corp.
	* Author(s): Utz Bacher <utz.bacher@de.ibm.com>
	* Jan Glauber <jang@linux.vnet.ibm.com>
	*/
	#ifndef _CIO_QDIO_H
	#define _CIO_QDIO_H

	#include <asm/page.h>
	#include <asm/schid.h>
	#include "chsc.h"

	#define QDIO_BUSY_BIT_PATIENCE 100 /* 100 microseconds */
	#define QDIO_BUSY_BIT_GIVE_UP 2000000 /* 2 seconds = eternity */
	#define QDIO_INPUT_THRESHOLD 500 /* 500 microseconds */

	enum qdio_irq_states {
	QDIO_IRQ_STATE_INACTIVE,
	QDIO_IRQ_STATE_ESTABLISHED,
	QDIO_IRQ_STATE_ACTIVE,
	QDIO_IRQ_STATE_STOPPED,
	QDIO_IRQ_STATE_CLEANUP,
	QDIO_IRQ_STATE_ERR,
	NR_QDIO_IRQ_STATES,
	};

	/* used as intparm in do_IO */
	#define QDIO_DOING_ESTABLISH 1
	#define QDIO_DOING_ACTIVATE 2
	#define QDIO_DOING_CLEANUP 3

	#define SLSB_STATE_NOT_INIT 0x0
	#define SLSB_STATE_EMPTY 0x1
	#define SLSB_STATE_PRIMED 0x2
	#define SLSB_STATE_HALTED 0xe
	#define SLSB_STATE_ERROR 0xf
	#define SLSB_TYPE_INPUT 0x0
	#define SLSB_TYPE_OUTPUT 0x20
	#define SLSB_OWNER_PROG 0x80
	#define SLSB_OWNER_CU 0x40

	#define SLSB_P_INPUT_NOT_INIT \
	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_NOT_INIT) /* 0x80 */
	#define SLSB_P_INPUT_ACK \
	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_EMPTY) /* 0x81 */
	#define SLSB_CU_INPUT_EMPTY \
	(SLSB_OWNER_CU \| SLSB_TYPE_INPUT \| SLSB_STATE_EMPTY) /* 0x41 */
	#define SLSB_P_INPUT_PRIMED \
	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_PRIMED) /* 0x82 */
	#define SLSB_P_INPUT_HALTED \
	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_HALTED) /* 0x8e */
	#define SLSB_P_INPUT_ERROR \
	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_ERROR) /* 0x8f */
	#define SLSB_P_OUTPUT_NOT_INIT \
	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_NOT_INIT) /* 0xa0 */
	#define SLSB_P_OUTPUT_EMPTY \
	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_EMPTY) /* 0xa1 */
	#define SLSB_CU_OUTPUT_PRIMED \
	(SLSB_OWNER_CU \| SLSB_TYPE_OUTPUT \| SLSB_STATE_PRIMED) /* 0x62 */
	#define SLSB_P_OUTPUT_HALTED \
	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_HALTED) /* 0xae */
	#define SLSB_P_OUTPUT_ERROR \
	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_ERROR) /* 0xaf */

	#define SLSB_ERROR_DURING_LOOKUP 0xff

	/* additional CIWs returned by extended Sense-ID */
	#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */
	#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */

	/* flags for st qdio sch data */
	#define CHSC_FLAG_QDIO_CAPABILITY 0x80
	#define CHSC_FLAG_VALIDITY 0x40

	/* qdio adapter-characteristics-1 flag */
	#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
	#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
	#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
	#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
	#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
	#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
	#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */

	#ifdef CONFIG_64BIT
	static inline int do_sqbs(u64 token, unsigned char state, int queue,
	int start, int count)
	{
	register unsigned long _ccq asm ("0") = *count;
	register unsigned long _token asm ("1") = token;
	unsigned long _queuestart = ((unsigned long)queue << 32) \| *start;

	asm volatile(
	" .insn rsy,0xeb000000008A,%1,0,0(%2)"
	: "+d" (_ccq), "+d" (_queuestart)
	: "d" ((unsigned long)state), "d" (_token)
	: "memory", "cc");
	*count = _ccq & 0xff;
	*start = _queuestart & 0xff;

	return (_ccq >> 32) & 0xff;
	}

	static inline int do_eqbs(u64 token, unsigned char *state, int queue,
	int start, int count)
	{
	register unsigned long _ccq asm ("0") = *count;
	register unsigned long _token asm ("1") = token;
	unsigned long _queuestart = ((unsigned long)queue << 32) \| *start;
	unsigned long _state = 0;

	asm volatile(
	" .insn rrf,0xB99c0000,%1,%2,0,0"
	: "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
	: "d" (_token)
	: "memory", "cc");
	*count = _ccq & 0xff;
	*start = _queuestart & 0xff;
	*state = _state & 0xff;

	return (_ccq >> 32) & 0xff;
	}
	#else
	static inline int do_sqbs(u64 token, unsigned char state, int queue,
	int start, int count) { return 0; }
	static inline int do_eqbs(u64 token, unsigned char *state, int queue,
	int start, int count) { return 0; }
	#endif /* CONFIG_64BIT */

	struct qdio_irq;

	struct siga_flag {
	u8 input:1;
	u8 output:1;
	u8 sync:1;
	u8 no_sync_ti:1;
	u8 no_sync_out_ti:1;
	u8 no_sync_out_pci:1;
	u8:2;
	} __attribute__ ((packed));

	struct chsc_ssqd_area {
	struct chsc_header request;
	u16:10;
	u8 ssid:2;
	u8 fmt:4;
	u16 first_sch;
	u16:16;
	u16 last_sch;
	u32:32;
	struct chsc_header response;
	u32:32;
	struct qdio_ssqd_desc qdio_ssqd;
	} __attribute__ ((packed));

	struct scssc_area {
	struct chsc_header request;
	u16 operation_code;
	u16:16;
	u32:32;
	u32:32;
	u64 summary_indicator_addr;
	u64 subchannel_indicator_addr;
	u32 ks:4;
	u32 kc:4;
	u32:21;
	u32 isc:3;
	u32 word_with_d_bit;
	u32:32;
	struct subchannel_id schid;
	u32 reserved[1004];
	struct chsc_header response;
	u32:32;
	} __attribute__ ((packed));

	struct qdio_input_q {
	/* input buffer acknowledgement flag */
	int polling;

	/* last time of noticing incoming data */
	u64 timestamp;

	/* lock for clearing the acknowledgement */
	spinlock_t lock;
	};

	struct qdio_output_q {
	/* failed siga-w attempts*/
	atomic_t busy_siga_counter;

	/* start time of busy condition */
	u64 timestamp;

	/* PCIs are enabled for the queue */
	int pci_out_enabled;

	/* timer to check for more outbound work */
	struct timer_list timer;
	};

	struct qdio_q {
	struct slsb slsb;
	union {
	struct qdio_input_q in;
	struct qdio_output_q out;
	} u;

	/* queue number */
	int nr;

	/* bitmask of queue number */
	int mask;

	/* input or output queue */
	int is_input_q;

	/* list of thinint input queues */
	struct list_head entry;

	/* upper-layer program handler */
	qdio_handler_t (*handler);

	/*
	* inbound: next buffer the program should check for
	* outbound: next buffer to check for having been processed
	* by the card
	*/
	int first_to_check;

	/* first_to_check of the last time */
	int last_move_ftc;

	/* beginning position for calling the program */
	int first_to_kick;

	/* number of buffers in use by the adapter */
	atomic_t nr_buf_used;

	struct qdio_irq *irq_ptr;
	struct tasklet_struct tasklet;

	/* error condition during a data transfer */
	unsigned int qdio_error;

	struct sl *sl;
	struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];

	/*
	* Warning: Leave this member at the end so it won't be cleared in
	* qdio_fill_qs. A page is allocated under this pointer and used for
	* slib and sl. slib is 2048 bytes big and sl points to offset
	* PAGE_SIZE / 2.
	*/
	struct slib *slib;
	} __attribute__ ((aligned(256)));

	struct qdio_irq {
	struct qib qib;
	u32 dsci; / address of device state change indicator */
	struct ccw_device *cdev;

	unsigned long int_parm;
	struct subchannel_id schid;
	unsigned long sch_token; /* QEBSM facility */

	enum qdio_irq_states state;

	struct siga_flag siga_flag; /* siga sync information from qdioac */

	int nr_input_qs;
	int nr_output_qs;

	struct ccw1 ccw;
	struct ciw equeue;
	struct ciw aqueue;

	struct qdio_ssqd_desc ssqd_desc;

	void (orig_handler) (struct ccw_device , unsigned long, struct irb *);

	/*
	* Warning: Leave these members together at the end so they won't be
	* cleared in qdio_setup_irq.
	*/
	struct qdr *qdr;
	unsigned long chsc_page;

	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];

	struct mutex setup_mutex;
	};

	/* helper functions */
	#define queue_type(q) q->irq_ptr->qib.qfmt

	#define is_thinint_irq(irq) \
	(irq->qib.qfmt == QDIO_IQDIO_QFMT \|\| \
	css_general_characteristics.aif_osa)

	/* the highest iqdio queue is used for multicast */
	static inline int multicast_outbound(struct qdio_q *q)
	{
	return (q->irq_ptr->nr_output_qs > 1) &&
	(q->nr == q->irq_ptr->nr_output_qs - 1);
	}

	static inline unsigned long long get_usecs(void)
	{
	return monotonic_clock() >> 12;
	}

	#define pci_out_supported(q) \
	(q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
	#define is_qebsm(q) (q->irq_ptr->sch_token != 0)

	#define need_siga_sync_thinint(q) (!q->irq_ptr->siga_flag.no_sync_ti)
	#define need_siga_sync_out_thinint(q) (!q->irq_ptr->siga_flag.no_sync_out_ti)
	#define need_siga_in(q) (q->irq_ptr->siga_flag.input)
	#define need_siga_out(q) (q->irq_ptr->siga_flag.output)
	#define need_siga_sync(q) (q->irq_ptr->siga_flag.sync)
	#define siga_syncs_out_pci(q) (q->irq_ptr->siga_flag.no_sync_out_pci)

	#define for_each_input_queue(irq_ptr, q, i) \
	for (i = 0, q = irq_ptr->input_qs[0]; \
	i < irq_ptr->nr_input_qs; \
	q = irq_ptr->input_qs[++i])
	#define for_each_output_queue(irq_ptr, q, i) \
	for (i = 0, q = irq_ptr->output_qs[0]; \
	i < irq_ptr->nr_output_qs; \
	q = irq_ptr->output_qs[++i])

	#define prev_buf(bufnr) \
	((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
	#define next_buf(bufnr) \
	((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
	#define add_buf(bufnr, inc) \
	((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)

	/* prototypes for thin interrupt */
	void qdio_sync_after_thinint(struct qdio_q *q);
	int get_buf_state(struct qdio_q q, unsigned int bufnr, unsigned char state);
	void qdio_check_outbound_after_thinint(struct qdio_q *q);
	int qdio_inbound_q_moved(struct qdio_q *q);
	void qdio_kick_inbound_handler(struct qdio_q *q);
	void qdio_stop_polling(struct qdio_q *q);
	int qdio_siga_sync_q(struct qdio_q *q);

	void qdio_setup_thinint(struct qdio_irq *irq_ptr);
	int qdio_establish_thinint(struct qdio_irq *irq_ptr);
	void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
	void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
	void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
	void tiqdio_inbound_processing(unsigned long q);
	int tiqdio_allocate_memory(void);
	void tiqdio_free_memory(void);
	int tiqdio_register_thinints(void);
	void tiqdio_unregister_thinints(void);

	/* prototypes for setup */
	void qdio_inbound_processing(unsigned long data);
	void qdio_outbound_processing(unsigned long data);
	void qdio_outbound_timer(unsigned long data);
	void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
	struct irb *irb);
	int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs,
	int nr_output_qs);
	void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr);
	int qdio_setup_irq(struct qdio_initialize *init_data);
	void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
	struct ccw_device *cdev);
	void qdio_release_memory(struct qdio_irq *irq_ptr);
	int qdio_setup_init(void);
	void qdio_setup_exit(void);

	#endif /* _CIO_QDIO_H */