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linux/drivers/s390/cio/qdio.h
Michael Holzheu 66a464dbc8 [PATCH] s390: debug feature changes 
This patch changes the memory allocation method for the s390 debug feature.
Trace buffers had been allocated using the get_free_pages() function before.
Therefore it was not possible to get big memory areas in a running system due
to memory fragmentation.  Now the trace buffers are subdivided into several
subbuffers with pagesize.  Therefore it is now possible to allocate more
memory for the trace buffers and more trace records can be written.

In addition to that, dynamic specification of the size of the trace buffers is
implemented.  It is now possible to change the size of a trace buffer using a
new debugfs file instance.  When writing a number into this file, the trace
buffer size is changed to 'number * pagesize'.

In the past all the traces could be obtained from userspace by accessing files
in the "proc" filesystem.  Now with debugfs we have a new filesystem which
should be used for debugging purposes.  This patch moves the debug feature
from procfs to debugfs.

Since the interface of debug_register() changed, all device drivers, which use
the debug feature had to be adjusted.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:24:37 -07:00

651 lines
17 KiB
C
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#ifndef _CIO_QDIO_H
#define _CIO_QDIO_H
#include <asm/page.h>
#define VERSION_CIO_QDIO_H "$Revision: 1.33 $"
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_VERBOSE_LEVEL 9
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_VERBOSE_LEVEL 5
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_USE_PROCESSING_STATE
#ifdef CONFIG_QDIO_PERF_STATS
#define QDIO_PERFORMANCE_STATS
#endif /* CONFIG_QDIO_PERF_STATS */
#define QDIO_MINIMAL_BH_RELIEF_TIME 16
#define QDIO_TIMER_POLL_VALUE 1
#define IQDIO_TIMER_POLL_VALUE 1
/*
* unfortunately this can't be (QDIO_MAX_BUFFERS_PER_Q*4/3) or so -- as
* we never know, whether we'll get initiative again, e.g. to give the
* transmit skb's back to the stack, however the stack may be waiting for
* them... therefore we define 4 as threshold to start polling (which
* will stop as soon as the asynchronous queue catches up)
* btw, this only applies to the asynchronous HiperSockets queue
*/
#define IQDIO_FILL_LEVEL_TO_POLL 4
#define TIQDIO_THININT_ISC 3
#define TIQDIO_DELAY_TARGET 0
#define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
#define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
#define IQDIO_GLOBAL_LAPS 2 /* GLOBAL_LAPS are not used as we */
#define IQDIO_GLOBAL_LAPS_INT 1 /* don't global summary */
#define IQDIO_LOCAL_LAPS 4
#define IQDIO_LOCAL_LAPS_INT 1
#define IQDIO_GLOBAL_SUMMARY_CC_MASK 2
/*#define IQDIO_IQDC_INT_PARM 0x1234*/
#define QDIO_Q_LAPS 5
#define QDIO_STORAGE_KEY PAGE_DEFAULT_KEY
#define L2_CACHELINE_SIZE 256
#define INDICATORS_PER_CACHELINE (L2_CACHELINE_SIZE/sizeof(__u32))
#define QDIO_PERF "qdio_perf"
/* must be a power of 2 */
/*#define QDIO_STATS_NUMBER 4
#define QDIO_STATS_CLASSES 2
#define QDIO_STATS_COUNT_NEEDED 2*/
#define QDIO_NO_USE_COUNT_TIMEOUT (1*HZ) /* wait for 1 sec on each q before
exiting without having use_count
of the queue to 0 */
#define QDIO_ESTABLISH_TIMEOUT (1*HZ)
#define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)
#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
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_SENSEID 0
#define QDIO_DOING_ESTABLISH 1
#define QDIO_DOING_ACTIVATE 2
#define QDIO_DOING_CLEANUP 3
/************************* DEBUG FACILITY STUFF *********************/
#define QDIO_DBF_HEX(ex,name,level,addr,len) \
do { \
if (ex) \
debug_exception(qdio_dbf_##name,level,(void*)(addr),len); \
else \
debug_event(qdio_dbf_##name,level,(void*)(addr),len); \
} while (0)
#define QDIO_DBF_TEXT(ex,name,level,text) \
do { \
if (ex) \
debug_text_exception(qdio_dbf_##name,level,text); \
else \
debug_text_event(qdio_dbf_##name,level,text); \
} while (0)
#define QDIO_DBF_HEX0(ex,name,addr,len) QDIO_DBF_HEX(ex,name,0,addr,len)
#define QDIO_DBF_HEX1(ex,name,addr,len) QDIO_DBF_HEX(ex,name,1,addr,len)
#define QDIO_DBF_HEX2(ex,name,addr,len) QDIO_DBF_HEX(ex,name,2,addr,len)
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_HEX3(ex,name,addr,len) QDIO_DBF_HEX(ex,name,3,addr,len)
#define QDIO_DBF_HEX4(ex,name,addr,len) QDIO_DBF_HEX(ex,name,4,addr,len)
#define QDIO_DBF_HEX5(ex,name,addr,len) QDIO_DBF_HEX(ex,name,5,addr,len)
#define QDIO_DBF_HEX6(ex,name,addr,len) QDIO_DBF_HEX(ex,name,6,addr,len)
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_HEX3(ex,name,addr,len) do {} while (0)
#define QDIO_DBF_HEX4(ex,name,addr,len) do {} while (0)
#define QDIO_DBF_HEX5(ex,name,addr,len) do {} while (0)
#define QDIO_DBF_HEX6(ex,name,addr,len) do {} while (0)
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_TEXT0(ex,name,text) QDIO_DBF_TEXT(ex,name,0,text)
#define QDIO_DBF_TEXT1(ex,name,text) QDIO_DBF_TEXT(ex,name,1,text)
#define QDIO_DBF_TEXT2(ex,name,text) QDIO_DBF_TEXT(ex,name,2,text)
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_TEXT3(ex,name,text) QDIO_DBF_TEXT(ex,name,3,text)
#define QDIO_DBF_TEXT4(ex,name,text) QDIO_DBF_TEXT(ex,name,4,text)
#define QDIO_DBF_TEXT5(ex,name,text) QDIO_DBF_TEXT(ex,name,5,text)
#define QDIO_DBF_TEXT6(ex,name,text) QDIO_DBF_TEXT(ex,name,6,text)
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_TEXT3(ex,name,text) do {} while (0)
#define QDIO_DBF_TEXT4(ex,name,text) do {} while (0)
#define QDIO_DBF_TEXT5(ex,name,text) do {} while (0)
#define QDIO_DBF_TEXT6(ex,name,text) do {} while (0)
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SETUP_NAME "qdio_setup"
#define QDIO_DBF_SETUP_LEN 8
#define QDIO_DBF_SETUP_PAGES 4
#define QDIO_DBF_SETUP_NR_AREAS 1
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SETUP_LEVEL 6
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SETUP_LEVEL 2
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SBAL_NAME "qdio_labs" /* sbal */
#define QDIO_DBF_SBAL_LEN 256
#define QDIO_DBF_SBAL_PAGES 4
#define QDIO_DBF_SBAL_NR_AREAS 2
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SBAL_LEVEL 6
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SBAL_LEVEL 2
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_TRACE_NAME "qdio_trace"
#define QDIO_DBF_TRACE_LEN 8
#define QDIO_DBF_TRACE_NR_AREAS 2
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_TRACE_PAGES 16
#define QDIO_DBF_TRACE_LEVEL 4 /* -------- could be even more verbose here */
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_TRACE_PAGES 4
#define QDIO_DBF_TRACE_LEVEL 2
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SENSE_NAME "qdio_sense"
#define QDIO_DBF_SENSE_LEN 64
#define QDIO_DBF_SENSE_PAGES 2
#define QDIO_DBF_SENSE_NR_AREAS 1
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_DBF_SENSE_LEVEL 6
#else /* CONFIG_QDIO_DEBUG */
#define QDIO_DBF_SENSE_LEVEL 2
#endif /* CONFIG_QDIO_DEBUG */
#ifdef CONFIG_QDIO_DEBUG
#define QDIO_TRACE_QTYPE QDIO_ZFCP_QFMT
#define QDIO_DBF_SLSB_OUT_NAME "qdio_slsb_out"
#define QDIO_DBF_SLSB_OUT_LEN QDIO_MAX_BUFFERS_PER_Q
#define QDIO_DBF_SLSB_OUT_PAGES 256
#define QDIO_DBF_SLSB_OUT_NR_AREAS 1
#define QDIO_DBF_SLSB_OUT_LEVEL 6
#define QDIO_DBF_SLSB_IN_NAME "qdio_slsb_in"
#define QDIO_DBF_SLSB_IN_LEN QDIO_MAX_BUFFERS_PER_Q
#define QDIO_DBF_SLSB_IN_PAGES 256
#define QDIO_DBF_SLSB_IN_NR_AREAS 1
#define QDIO_DBF_SLSB_IN_LEVEL 6
#endif /* CONFIG_QDIO_DEBUG */
#define QDIO_PRINTK_HEADER QDIO_NAME ": "
#if QDIO_VERBOSE_LEVEL>8
#define QDIO_PRINT_STUPID(x...) printk( KERN_DEBUG QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_STUPID(x...)
#endif
#if QDIO_VERBOSE_LEVEL>7
#define QDIO_PRINT_ALL(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_ALL(x...)
#endif
#if QDIO_VERBOSE_LEVEL>6
#define QDIO_PRINT_INFO(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_INFO(x...)
#endif
#if QDIO_VERBOSE_LEVEL>5
#define QDIO_PRINT_WARN(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_WARN(x...)
#endif
#if QDIO_VERBOSE_LEVEL>4
#define QDIO_PRINT_ERR(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_ERR(x...)
#endif
#if QDIO_VERBOSE_LEVEL>3
#define QDIO_PRINT_CRIT(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_CRIT(x...)
#endif
#if QDIO_VERBOSE_LEVEL>2
#define QDIO_PRINT_ALERT(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_ALERT(x...)
#endif
#if QDIO_VERBOSE_LEVEL>1
#define QDIO_PRINT_EMERG(x...) printk( QDIO_PRINTK_HEADER x)
#else
#define QDIO_PRINT_EMERG(x...)
#endif
#define HEXDUMP16(importance,header,ptr) \
QDIO_PRINT_##importance(header "%02x %02x %02x %02x " \
"%02x %02x %02x %02x %02x %02x %02x %02x " \
"%02x %02x %02x %02x\n",*(((char*)ptr)), \
*(((char*)ptr)+1),*(((char*)ptr)+2), \
*(((char*)ptr)+3),*(((char*)ptr)+4), \
*(((char*)ptr)+5),*(((char*)ptr)+6), \
*(((char*)ptr)+7),*(((char*)ptr)+8), \
*(((char*)ptr)+9),*(((char*)ptr)+10), \
*(((char*)ptr)+11),*(((char*)ptr)+12), \
*(((char*)ptr)+13),*(((char*)ptr)+14), \
*(((char*)ptr)+15)); \
QDIO_PRINT_##importance(header "%02x %02x %02x %02x %02x %02x %02x %02x " \
"%02x %02x %02x %02x %02x %02x %02x %02x\n", \
*(((char*)ptr)+16),*(((char*)ptr)+17), \
*(((char*)ptr)+18),*(((char*)ptr)+19), \
*(((char*)ptr)+20),*(((char*)ptr)+21), \
*(((char*)ptr)+22),*(((char*)ptr)+23), \
*(((char*)ptr)+24),*(((char*)ptr)+25), \
*(((char*)ptr)+26),*(((char*)ptr)+27), \
*(((char*)ptr)+28),*(((char*)ptr)+29), \
*(((char*)ptr)+30),*(((char*)ptr)+31));
/****************** END OF DEBUG FACILITY STUFF *********************/
/*
* Some instructions as assembly
*/
extern __inline__ int
do_siga_sync(unsigned int irq, unsigned int mask1, unsigned int mask2)
{
int cc;
#ifndef CONFIG_ARCH_S390X
asm volatile (
"lhi 0,2 \n\t"
"lr 1,%1 \n\t"
"lr 2,%2 \n\t"
"lr 3,%3 \n\t"
"siga 0 \n\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc)
: "d" (0x10000|irq), "d" (mask1), "d" (mask2)
: "cc", "0", "1", "2", "3"
);
#else /* CONFIG_ARCH_S390X */
asm volatile (
"lghi 0,2 \n\t"
"llgfr 1,%1 \n\t"
"llgfr 2,%2 \n\t"
"llgfr 3,%3 \n\t"
"siga 0 \n\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc)
: "d" (0x10000|irq), "d" (mask1), "d" (mask2)
: "cc", "0", "1", "2", "3"
);
#endif /* CONFIG_ARCH_S390X */
return cc;
}
extern __inline__ int
do_siga_input(unsigned int irq, unsigned int mask)
{
int cc;
#ifndef CONFIG_ARCH_S390X
asm volatile (
"lhi 0,1 \n\t"
"lr 1,%1 \n\t"
"lr 2,%2 \n\t"
"siga 0 \n\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc)
: "d" (0x10000|irq), "d" (mask)
: "cc", "0", "1", "2", "memory"
);
#else /* CONFIG_ARCH_S390X */
asm volatile (
"lghi 0,1 \n\t"
"llgfr 1,%1 \n\t"
"llgfr 2,%2 \n\t"
"siga 0 \n\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc)
: "d" (0x10000|irq), "d" (mask)
: "cc", "0", "1", "2", "memory"
);
#endif /* CONFIG_ARCH_S390X */
return cc;
}
extern __inline__ int
do_siga_output(unsigned long irq, unsigned long mask, __u32 *bb)
{
int cc;
__u32 busy_bit;
#ifndef CONFIG_ARCH_S390X
asm volatile (
"lhi 0,0 \n\t"
"lr 1,%2 \n\t"
"lr 2,%3 \n\t"
"siga 0 \n\t"
"0:"
"ipm %0 \n\t"
"srl %0,28 \n\t"
"srl 0,31 \n\t"
"lr %1,0 \n\t"
"1: \n\t"
".section .fixup,\"ax\"\n\t"
"2: \n\t"
"lhi %0,%4 \n\t"
"bras 1,3f \n\t"
".long 1b \n\t"
"3: \n\t"
"l 1,0(1) \n\t"
"br 1 \n\t"
".previous \n\t"
".section __ex_table,\"a\"\n\t"
".align 4 \n\t"
".long 0b,2b \n\t"
".previous \n\t"
: "=d" (cc), "=d" (busy_bit)
: "d" (0x10000|irq), "d" (mask),
"i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
: "cc", "0", "1", "2", "memory"
);
#else /* CONFIG_ARCH_S390X */
asm volatile (
"lghi 0,0 \n\t"
"llgfr 1,%2 \n\t"
"llgfr 2,%3 \n\t"
"siga 0 \n\t"
"0:"
"ipm %0 \n\t"
"srl %0,28 \n\t"
"srl 0,31 \n\t"
"llgfr %1,0 \n\t"
"1: \n\t"
".section .fixup,\"ax\"\n\t"
"lghi %0,%4 \n\t"
"jg 1b \n\t"
".previous\n\t"
".section __ex_table,\"a\"\n\t"
".align 8 \n\t"
".quad 0b,1b \n\t"
".previous \n\t"
: "=d" (cc), "=d" (busy_bit)
: "d" (0x10000|irq), "d" (mask),
"i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
: "cc", "0", "1", "2", "memory"
);
#endif /* CONFIG_ARCH_S390X */
(*bb) = busy_bit;
return cc;
}
extern __inline__ unsigned long
do_clear_global_summary(void)
{
unsigned long time;
#ifndef CONFIG_ARCH_S390X
asm volatile (
"lhi 1,3 \n\t"
".insn rre,0xb2650000,2,0 \n\t"
"lr %0,3 \n\t"
: "=d" (time) : : "cc", "1", "2", "3"
);
#else /* CONFIG_ARCH_S390X */
asm volatile (
"lghi 1,3 \n\t"
".insn rre,0xb2650000,2,0 \n\t"
"lgr %0,3 \n\t"
: "=d" (time) : : "cc", "1", "2", "3"
);
#endif /* CONFIG_ARCH_S390X */
return time;
}
/*
* QDIO device commands returned by extended Sense-ID
*/
#define DEFAULT_ESTABLISH_QS_CMD 0x1b
#define DEFAULT_ESTABLISH_QS_COUNT 0x1000
#define DEFAULT_ACTIVATE_QS_CMD 0x1f
#define DEFAULT_ACTIVATE_QS_COUNT 0
/*
* additional CIWs returned by extended Sense-ID
*/
#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */
#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */
#define QDIO_CHSC_RESPONSE_CODE_OK 1
/* flags for st qdio sch data */
#define CHSC_FLAG_QDIO_CAPABILITY 0x80
#define CHSC_FLAG_VALIDITY 0x40
#define CHSC_FLAG_SIGA_INPUT_NECESSARY 0x40
#define CHSC_FLAG_SIGA_OUTPUT_NECESSARY 0x20
#define CHSC_FLAG_SIGA_SYNC_NECESSARY 0x10
#define CHSC_FLAG_SIGA_SYNC_DONE_ON_THININTS 0x08
#define CHSC_FLAG_SIGA_SYNC_DONE_ON_OUTB_PCIS 0x04
#ifdef QDIO_PERFORMANCE_STATS
struct qdio_perf_stats {
unsigned int tl_runs;
unsigned int siga_outs;
unsigned int siga_ins;
unsigned int siga_syncs;
unsigned int pcis;
unsigned int thinints;
unsigned int fast_reqs;
__u64 start_time_outbound;
unsigned int outbound_cnt;
unsigned int outbound_time;
__u64 start_time_inbound;
unsigned int inbound_cnt;
unsigned int inbound_time;
};
#endif /* QDIO_PERFORMANCE_STATS */
#define atomic_swap(a,b) xchg((int*)a.counter,b)
/* unlikely as the later the better */
#define SYNC_MEMORY if (unlikely(q->siga_sync)) qdio_siga_sync_q(q)
#define SYNC_MEMORY_ALL if (unlikely(q->siga_sync)) \
qdio_siga_sync(q,~0U,~0U)
#define SYNC_MEMORY_ALL_OUTB if (unlikely(q->siga_sync)) \
qdio_siga_sync(q,~0U,0)
#define NOW qdio_get_micros()
#define SAVE_TIMESTAMP(q) q->timing.last_transfer_time=NOW
#define GET_SAVED_TIMESTAMP(q) (q->timing.last_transfer_time)
#define SAVE_FRONTIER(q,val) q->last_move_ftc=val
#define GET_SAVED_FRONTIER(q) (q->last_move_ftc)
#define MY_MODULE_STRING(x) #x
#ifdef CONFIG_ARCH_S390X
#define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x)
#else /* CONFIG_ARCH_S390X */
#define QDIO_GET_ADDR(x) ((__u32)(long)x)
#endif /* CONFIG_ARCH_S390X */
#ifdef CONFIG_QDIO_DEBUG
#define set_slsb(x,y) \
if(q->queue_type==QDIO_TRACE_QTYPE) { \
if(q->is_input_q) { \
QDIO_DBF_HEX2(0,slsb_in,&q->slsb,QDIO_MAX_BUFFERS_PER_Q); \
} else { \
QDIO_DBF_HEX2(0,slsb_out,&q->slsb,QDIO_MAX_BUFFERS_PER_Q); \
} \
} \
qdio_set_slsb(x,y); \
if(q->queue_type==QDIO_TRACE_QTYPE) { \
if(q->is_input_q) { \
QDIO_DBF_HEX2(0,slsb_in,&q->slsb,QDIO_MAX_BUFFERS_PER_Q); \
} else { \
QDIO_DBF_HEX2(0,slsb_out,&q->slsb,QDIO_MAX_BUFFERS_PER_Q); \
} \
}
#else /* CONFIG_QDIO_DEBUG */
#define set_slsb(x,y) qdio_set_slsb(x,y)
#endif /* CONFIG_QDIO_DEBUG */
struct qdio_q {
volatile struct slsb slsb;
char unused[QDIO_MAX_BUFFERS_PER_Q];
__u32 * volatile dev_st_chg_ind;
int is_input_q;
int irq;
struct ccw_device *cdev;
unsigned int is_iqdio_q;
unsigned int is_thinint_q;
/* bit 0 means queue 0, bit 1 means queue 1, ... */
unsigned int mask;
unsigned int q_no;
qdio_handler_t (*handler);
/* points to the next buffer to be checked for having
* been processed by the card (outbound)
* or to the next buffer the program should check for (inbound) */
volatile int first_to_check;
/* and the last time it was: */
volatile int last_move_ftc;
atomic_t number_of_buffers_used;
atomic_t polling;
unsigned int siga_in;
unsigned int siga_out;
unsigned int siga_sync;
unsigned int siga_sync_done_on_thinints;
unsigned int siga_sync_done_on_outb_tis;
unsigned int hydra_gives_outbound_pcis;
/* used to save beginning position when calling dd_handlers */
int first_element_to_kick;
atomic_t use_count;
atomic_t is_in_shutdown;
void *irq_ptr;
#ifdef QDIO_USE_TIMERS_FOR_POLLING
struct timer_list timer;
atomic_t timer_already_set;
spinlock_t timer_lock;
#else /* QDIO_USE_TIMERS_FOR_POLLING */
struct tasklet_struct tasklet;
#endif /* QDIO_USE_TIMERS_FOR_POLLING */
enum qdio_irq_states state;
/* used to store the error condition during a data transfer */
unsigned int qdio_error;
unsigned int siga_error;
unsigned int error_status_flags;
/* list of interesting queues */
volatile struct qdio_q *list_next;
volatile struct qdio_q *list_prev;
struct sl *sl;
volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q];
struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q];
unsigned long int_parm;
/*struct {
int in_bh_check_limit;
int threshold;
} threshold_classes[QDIO_STATS_CLASSES];*/
struct {
/* inbound: the time to stop polling
outbound: the time to kick peer */
int threshold; /* the real value */
/* outbound: last time of do_QDIO
inbound: last time of noticing incoming data */
/*__u64 last_transfer_times[QDIO_STATS_NUMBER];
int last_transfer_index; */
__u64 last_transfer_time;
__u64 busy_start;
} timing;
atomic_t busy_siga_counter;
unsigned int queue_type;
/* leave this member at the end. won't be cleared in qdio_fill_qs */
struct slib *slib; /* a page is allocated under this pointer,
sl points into this page, offset PAGE_SIZE/2
(after slib) */
} __attribute__ ((aligned(256)));
struct qdio_irq {
__u32 * volatile dev_st_chg_ind;
unsigned long int_parm;
int irq;
unsigned int is_iqdio_irq;
unsigned int is_thinint_irq;
unsigned int hydra_gives_outbound_pcis;
unsigned int sync_done_on_outb_pcis;
enum qdio_irq_states state;
unsigned int no_input_qs;
unsigned int no_output_qs;
unsigned char qdioac;
struct ccw1 ccw;
struct ciw equeue;
struct ciw aqueue;
struct qib qib;
void (*original_int_handler) (struct ccw_device *,
unsigned long, struct irb *);
/* leave these four members together at the end. won't be cleared in qdio_fill_irq */
struct qdr *qdr;
struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
struct semaphore setting_up_sema;
};
#endif
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