[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / s390 / 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 <asm/debug.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 */

/*
 * if an asynchronous HiperSockets queue runs full, the 10 seconds timer wait
 * till next initiative to give transmitted skbs back to the stack is too long.
 * Therefore polling is started in case of multicast queue is filled more
 * than 50 percent.
 */
#define QDIO_IQDIO_POLL_LVL		65	/* HS multicast queue */

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;

	/* IQDIO: output multiple buffers (enhanced SIGA) */
	int use_enh_siga;

	/* 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];

	debug_info_t *debug_area;
	struct mutex setup_mutex;
};

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

#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_get_ssqd(struct qdio_irq *irq_ptr,
			struct subchannel_id *schid,
			struct qdio_ssqd_desc *data);
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 */
Commit	Line	Data
779e6e1c JG	1	/*
	2	* linux/drivers/s390/cio/qdio.h
	3	*
	4	* Copyright 2000,2008 IBM Corp.
	5	* Author(s): Utz Bacher <utz.bacher@de.ibm.com>
	6	* Jan Glauber <jang@linux.vnet.ibm.com>
	7	*/
1da177e4 LT	8	#ifndef _CIO_QDIO_H
	9	#define _CIO_QDIO_H
	10
0b642ede	11	#include <asm/page.h>
9d92a7e1	12	#include <asm/schid.h>
22f99347	13	#include <asm/debug.h>
779e6e1c	14	#include "chsc.h"
a8237fc4	15
779e6e1c JG	16	#define QDIO_BUSY_BIT_PATIENCE 100 /* 100 microseconds */
	17	#define QDIO_BUSY_BIT_GIVE_UP 2000000 /* 2 seconds = eternity */
	18	#define QDIO_INPUT_THRESHOLD 500 /* 500 microseconds */
1da177e4	19
4bcb3a37 UB	20	/*
	21	* if an asynchronous HiperSockets queue runs full, the 10 seconds timer wait
	22	* till next initiative to give transmitted skbs back to the stack is too long.
	23	* Therefore polling is started in case of multicast queue is filled more
	24	* than 50 percent.
	25	*/
	26	#define QDIO_IQDIO_POLL_LVL 65 /* HS multicast queue */
	27
1da177e4 LT	28	enum qdio_irq_states {
	29	QDIO_IRQ_STATE_INACTIVE,
	30	QDIO_IRQ_STATE_ESTABLISHED,
	31	QDIO_IRQ_STATE_ACTIVE,
	32	QDIO_IRQ_STATE_STOPPED,
	33	QDIO_IRQ_STATE_CLEANUP,
	34	QDIO_IRQ_STATE_ERR,
	35	NR_QDIO_IRQ_STATES,
	36	};
	37
779e6e1c JG	38	/* used as intparm in do_IO */
	39	#define QDIO_DOING_ESTABLISH 1
	40	#define QDIO_DOING_ACTIVATE 2
	41	#define QDIO_DOING_CLEANUP 3
	42
	43	#define SLSB_STATE_NOT_INIT 0x0
	44	#define SLSB_STATE_EMPTY 0x1
	45	#define SLSB_STATE_PRIMED 0x2
	46	#define SLSB_STATE_HALTED 0xe
	47	#define SLSB_STATE_ERROR 0xf
	48	#define SLSB_TYPE_INPUT 0x0
	49	#define SLSB_TYPE_OUTPUT 0x20
	50	#define SLSB_OWNER_PROG 0x80
	51	#define SLSB_OWNER_CU 0x40
	52
	53	#define SLSB_P_INPUT_NOT_INIT \
	54	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_NOT_INIT) /* 0x80 */
	55	#define SLSB_P_INPUT_ACK \
	56	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_EMPTY) /* 0x81 */
	57	#define SLSB_CU_INPUT_EMPTY \
	58	(SLSB_OWNER_CU \| SLSB_TYPE_INPUT \| SLSB_STATE_EMPTY) /* 0x41 */
	59	#define SLSB_P_INPUT_PRIMED \
	60	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_PRIMED) /* 0x82 */
	61	#define SLSB_P_INPUT_HALTED \
	62	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_HALTED) /* 0x8e */
	63	#define SLSB_P_INPUT_ERROR \
	64	(SLSB_OWNER_PROG \| SLSB_TYPE_INPUT \| SLSB_STATE_ERROR) /* 0x8f */
	65	#define SLSB_P_OUTPUT_NOT_INIT \
	66	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_NOT_INIT) /* 0xa0 */
	67	#define SLSB_P_OUTPUT_EMPTY \
	68	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_EMPTY) /* 0xa1 */
	69	#define SLSB_CU_OUTPUT_PRIMED \
	70	(SLSB_OWNER_CU \| SLSB_TYPE_OUTPUT \| SLSB_STATE_PRIMED) /* 0x62 */
	71	#define SLSB_P_OUTPUT_HALTED \
	72	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_HALTED) /* 0xae */
	73	#define SLSB_P_OUTPUT_ERROR \
	74	(SLSB_OWNER_PROG \| SLSB_TYPE_OUTPUT \| SLSB_STATE_ERROR) /* 0xaf */
	75
	76	#define SLSB_ERROR_DURING_LOOKUP 0xff
	77
	78	/* additional CIWs returned by extended Sense-ID */
	79	#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */
	80	#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */
1da177e4	81
779e6e1c JG	82	/* flags for st qdio sch data */
	83	#define CHSC_FLAG_QDIO_CAPABILITY 0x80
	84	#define CHSC_FLAG_VALIDITY 0x40
	85
	86	/* qdio adapter-characteristics-1 flag */
	87	#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
	88	#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
	89	#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
	90	#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
	91	#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
	92	#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
	93	#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
1da177e4	94
779e6e1c JG	95	#ifdef CONFIG_64BIT
	96	static inline int do_sqbs(u64 token, unsigned char state, int queue,
	97	int start, int count)
	98	{
	99	register unsigned long _ccq asm ("0") = *count;
	100	register unsigned long _token asm ("1") = token;
	101	unsigned long _queuestart = ((unsigned long)queue << 32) \| *start;
1da177e4	102
779e6e1c JG	103	asm volatile(
	104	" .insn rsy,0xeb000000008A,%1,0,0(%2)"
	105	: "+d" (_ccq), "+d" (_queuestart)
	106	: "d" ((unsigned long)state), "d" (_token)
	107	: "memory", "cc");
	108	*count = _ccq & 0xff;
	109	*start = _queuestart & 0xff;
8129ee16	110
779e6e1c	111	return (_ccq >> 32) & 0xff;
8129ee16 FP	112	}
8129ee16 FP	113
779e6e1c JG	114	static inline int do_eqbs(u64 token, unsigned char *state, int queue,
779e6e1c JG	115	int start, int count)
8129ee16	116	{
8129ee16	117	register unsigned long _ccq asm ("0") = *count;
779e6e1c	118	register unsigned long _token asm ("1") = token;
8129ee16 FP	119	unsigned long _queuestart = ((unsigned long)queue << 32) \| *start;
	120	unsigned long _state = 0;
	121
94c12cc7 MS	122	asm volatile(
	123	" .insn rrf,0xB99c0000,%1,%2,0,0"
	124	: "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
779e6e1c JG	125	: "d" (_token)
779e6e1c JG	126	: "memory", "cc");
8129ee16 FP	127	*count = _ccq & 0xff;
	128	*start = _queuestart & 0xff;
	129	*state = _state & 0xff;
	130
	131	return (_ccq >> 32) & 0xff;
1da177e4	132	}
779e6e1c JG	133	#else
	134	static inline int do_sqbs(u64 token, unsigned char state, int queue,
	135	int start, int count) { return 0; }
	136	static inline int do_eqbs(u64 token, unsigned char *state, int queue,
	137	int start, int count) { return 0; }
	138	#endif /* CONFIG_64BIT */
1da177e4	139
779e6e1c	140	struct qdio_irq;
1da177e4	141
779e6e1c JG	142	struct siga_flag {
	143	u8 input:1;
	144	u8 output:1;
	145	u8 sync:1;
	146	u8 no_sync_ti:1;
	147	u8 no_sync_out_ti:1;
	148	u8 no_sync_out_pci:1;
	149	u8:2;
	150	} __attribute__ ((packed));
1da177e4	151
779e6e1c	152	struct chsc_ssqd_area {
e1776856	153	struct chsc_header request;
779e6e1c JG	154	u16:10;
	155	u8 ssid:2;
	156	u8 fmt:4;
e1776856	157	u16 first_sch;
779e6e1c	158	u16:16;
e1776856	159	u16 last_sch;
779e6e1c	160	u32:32;
e1776856	161	struct chsc_header response;
779e6e1c JG	162	u32:32;
	163	struct qdio_ssqd_desc qdio_ssqd;
	164	} __attribute__ ((packed));
e1776856	165
779e6e1c JG	166	struct scssc_area {
	167	struct chsc_header request;
	168	u16 operation_code;
	169	u16:16;
	170	u32:32;
	171	u32:32;
	172	u64 summary_indicator_addr;
	173	u64 subchannel_indicator_addr;
	174	u32 ks:4;
	175	u32 kc:4;
	176	u32:21;
	177	u32 isc:3;
	178	u32 word_with_d_bit;
	179	u32:32;
	180	struct subchannel_id schid;
	181	u32 reserved[1004];
	182	struct chsc_header response;
	183	u32:32;
	184	} __attribute__ ((packed));
	185
	186	struct qdio_input_q {
	187	/* input buffer acknowledgement flag */
	188	int polling;
	189
	190	/* last time of noticing incoming data */
	191	u64 timestamp;
	192
	193	/* lock for clearing the acknowledgement */
	194	spinlock_t lock;
1da177e4	195	};
1da177e4	196
779e6e1c JG	197	struct qdio_output_q {
	198	/* failed siga-w attempts*/
	199	atomic_t busy_siga_counter;
1da177e4	200
779e6e1c JG	201	/* start time of busy condition */
779e6e1c JG	202	u64 timestamp;
1da177e4	203
779e6e1c JG	204	/* PCIs are enabled for the queue */
779e6e1c JG	205	int pci_out_enabled;
1da177e4	206
7a0f4755 KDW	207	/* IQDIO: output multiple buffers (enhanced SIGA) */
	208	int use_enh_siga;
	209
779e6e1c JG	210	/* timer to check for more outbound work */
	211	struct timer_list timer;
	212	};
1da177e4	213
1da177e4	214	struct qdio_q {
779e6e1c JG	215	struct slsb slsb;
	216	union {
	217	struct qdio_input_q in;
	218	struct qdio_output_q out;
	219	} u;
1da177e4	220
779e6e1c JG	221	/* queue number */
779e6e1c JG	222	int nr;
1da177e4	223
779e6e1c JG	224	/* bitmask of queue number */
779e6e1c JG	225	int mask;
1da177e4	226
779e6e1c	227	/* input or output queue */
1da177e4	228	int is_input_q;
1da177e4	229
779e6e1c JG	230	/* list of thinint input queues */
779e6e1c JG	231	struct list_head entry;
1da177e4	232
779e6e1c	233	/* upper-layer program handler */
1da177e4 LT	234	qdio_handler_t (*handler);
1da177e4 LT	235
779e6e1c JG	236	/*
	237	* inbound: next buffer the program should check for
	238	* outbound: next buffer to check for having been processed
	239	* by the card
	240	*/
	241	int first_to_check;
1da177e4	242
779e6e1c JG	243	/* first_to_check of the last time */
779e6e1c JG	244	int last_move_ftc;
1da177e4	245
779e6e1c JG	246	/* beginning position for calling the program */
779e6e1c JG	247	int first_to_kick;
1da177e4	248
779e6e1c JG	249	/* number of buffers in use by the adapter */
779e6e1c JG	250	atomic_t nr_buf_used;
1da177e4	251
779e6e1c	252	struct qdio_irq *irq_ptr;
1da177e4	253	struct tasklet_struct tasklet;
1da177e4	254
779e6e1c	255	/* error condition during a data transfer */
1da177e4	256	unsigned int qdio_error;
1da177e4 LT	257
1da177e4 LT	258	struct sl *sl;
779e6e1c JG	259	struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
	260
	261	/*
	262	* Warning: Leave this member at the end so it won't be cleared in
	263	* qdio_fill_qs. A page is allocated under this pointer and used for
	264	* slib and sl. slib is 2048 bytes big and sl points to offset
	265	* PAGE_SIZE / 2.
	266	*/
	267	struct slib *slib;
1da177e4 LT	268	} __attribute__ ((aligned(256)));
	269
	270	struct qdio_irq {
779e6e1c JG	271	struct qib qib;
	272	u32 dsci; / address of device state change indicator */
	273	struct ccw_device *cdev;
1da177e4 LT	274
1da177e4 LT	275	unsigned long int_parm;
a8237fc4	276	struct subchannel_id schid;
779e6e1c	277	unsigned long sch_token; /* QEBSM facility */
8129ee16	278
1da177e4 LT	279	enum qdio_irq_states state;
1da177e4 LT	280
779e6e1c	281	struct siga_flag siga_flag; /* siga sync information from qdioac */
1da177e4	282
779e6e1c JG	283	int nr_input_qs;
779e6e1c JG	284	int nr_output_qs;
1da177e4 LT	285
1da177e4 LT	286	struct ccw1 ccw;
1da177e4 LT	287	struct ciw equeue;
	288	struct ciw aqueue;
	289
779e6e1c JG	290	struct qdio_ssqd_desc ssqd_desc;
	291
	292	void (orig_handler) (struct ccw_device , unsigned long, struct irb *);
1da177e4	293
779e6e1c JG	294	/*
	295	* Warning: Leave these members together at the end so they won't be
	296	* cleared in qdio_setup_irq.
	297	*/
1da177e4	298	struct qdr *qdr;
779e6e1c JG	299	unsigned long chsc_page;
779e6e1c JG	300
1da177e4 LT	301	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
1da177e4 LT	302	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
779e6e1c	303
22f99347	304	debug_info_t *debug_area;
779e6e1c	305	struct mutex setup_mutex;
1da177e4	306	};
779e6e1c JG	307
	308	/* helper functions */
	309	#define queue_type(q) q->irq_ptr->qib.qfmt
22f99347	310	#define SCH_NO(q) (q->irq_ptr->schid.sch_no)
779e6e1c JG	311
	312	#define is_thinint_irq(irq) \
	313	(irq->qib.qfmt == QDIO_IQDIO_QFMT \|\| \
	314	css_general_characteristics.aif_osa)
	315
	316	/* the highest iqdio queue is used for multicast */
	317	static inline int multicast_outbound(struct qdio_q *q)
	318	{
	319	return (q->irq_ptr->nr_output_qs > 1) &&
	320	(q->nr == q->irq_ptr->nr_output_qs - 1);
	321	}
	322
	323	static inline unsigned long long get_usecs(void)
	324	{
	325	return monotonic_clock() >> 12;
	326	}
	327
	328	#define pci_out_supported(q) \
	329	(q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
	330	#define is_qebsm(q) (q->irq_ptr->sch_token != 0)
	331
	332	#define need_siga_sync_thinint(q) (!q->irq_ptr->siga_flag.no_sync_ti)
	333	#define need_siga_sync_out_thinint(q) (!q->irq_ptr->siga_flag.no_sync_out_ti)
	334	#define need_siga_in(q) (q->irq_ptr->siga_flag.input)
	335	#define need_siga_out(q) (q->irq_ptr->siga_flag.output)
	336	#define need_siga_sync(q) (q->irq_ptr->siga_flag.sync)
	337	#define siga_syncs_out_pci(q) (q->irq_ptr->siga_flag.no_sync_out_pci)
	338
	339	#define for_each_input_queue(irq_ptr, q, i) \
	340	for (i = 0, q = irq_ptr->input_qs[0]; \
	341	i < irq_ptr->nr_input_qs; \
	342	q = irq_ptr->input_qs[++i])
	343	#define for_each_output_queue(irq_ptr, q, i) \
	344	for (i = 0, q = irq_ptr->output_qs[0]; \
	345	i < irq_ptr->nr_output_qs; \
	346	q = irq_ptr->output_qs[++i])
	347
	348	#define prev_buf(bufnr) \
	349	((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
	350	#define next_buf(bufnr) \
	351	((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
	352	#define add_buf(bufnr, inc) \
	353	((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)
	354
	355	/* prototypes for thin interrupt */
	356	void qdio_sync_after_thinint(struct qdio_q *q);
	357	int get_buf_state(struct qdio_q q, unsigned int bufnr, unsigned char state);
	358	void qdio_check_outbound_after_thinint(struct qdio_q *q);
	359	int qdio_inbound_q_moved(struct qdio_q *q);
	360	void qdio_kick_inbound_handler(struct qdio_q *q);
	361	void qdio_stop_polling(struct qdio_q *q);
	362	int qdio_siga_sync_q(struct qdio_q *q);
	363
	364	void qdio_setup_thinint(struct qdio_irq *irq_ptr);
	365	int qdio_establish_thinint(struct qdio_irq *irq_ptr);
	366	void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
	367	void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
	368	void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
	369	void tiqdio_inbound_processing(unsigned long q);
	370	int tiqdio_allocate_memory(void);
	371	void tiqdio_free_memory(void);
	372	int tiqdio_register_thinints(void);
	373	void tiqdio_unregister_thinints(void);
	374
375	/* prototypes for setup */
376	void qdio_inbound_processing(unsigned long data);
377	void qdio_outbound_processing(unsigned long data);
378	void qdio_outbound_timer(unsigned long data);
379	void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
380	struct irb *irb);
381	int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs,
382	int nr_output_qs);
383	void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr);
bbd50e17 JG	384	int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
	385	struct subchannel_id *schid,
	386	struct qdio_ssqd_desc *data);
779e6e1c JG	387	int qdio_setup_irq(struct qdio_initialize *init_data);
	388	void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
	389	struct ccw_device *cdev);
	390	void qdio_release_memory(struct qdio_irq *irq_ptr);
	391	int qdio_setup_init(void);
	392	void qdio_setup_exit(void);
	393
	394	#endif /* _CIO_QDIO_H */