diff options
Diffstat (limited to 'drivers/s390/cio/qdio.h')
| -rw-r--r-- | drivers/s390/cio/qdio.h | 955 |
1 files changed, 347 insertions, 608 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index ceb3ab31ee0..a563e4c0059 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -1,69 +1,20 @@ +/* + * Copyright IBM Corp. 2000, 2009 + * 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" -#include "schid.h" - -#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) +#define QDIO_BUSY_BIT_PATIENCE (100 << 12) /* 100 microseconds */ +#define QDIO_BUSY_BIT_RETRY_DELAY 10 /* 10 milliseconds */ +#define QDIO_BUSY_BIT_RETRIES 1000 /* = 10s retry time */ +#define QDIO_INPUT_THRESHOLD (500 << 12) /* 500 microseconds */ enum qdio_irq_states { QDIO_IRQ_STATE_INACTIVE, @@ -75,612 +26,400 @@ enum qdio_irq_states { 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 +/* 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_PENDING 0x3 +#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_P_OUTPUT_PENDING \ + (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_PENDING) /* 0xa3 */ +#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 */ -#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 *********************/ +/* flags for st qdio sch data */ +#define CHSC_FLAG_QDIO_CAPABILITY 0x80 +#define CHSC_FLAG_VALIDITY 0x40 -/* - * Some instructions as assembly - */ +/* SIGA flags */ +#define QDIO_SIGA_WRITE 0x00 +#define QDIO_SIGA_READ 0x01 +#define QDIO_SIGA_SYNC 0x02 +#define QDIO_SIGA_WRITEQ 0x04 +#define QDIO_SIGA_QEBSM_FLAG 0x80 -static inline int -do_sqbs(unsigned long sch, unsigned char state, int queue, - unsigned int *start, unsigned int *count) -{ #ifdef CONFIG_64BIT - register unsigned long _ccq asm ("0") = *count; - register unsigned long _sch asm ("1") = sch; - unsigned long _queuestart = ((unsigned long)queue << 32) | *start; - - asm volatile ( - " .insn rsy,0xeb000000008A,%1,0,0(%2)\n\t" - : "+d" (_ccq), "+d" (_queuestart) - : "d" ((unsigned long)state), "d" (_sch) - : "memory", "cc" - ); - *count = _ccq & 0xff; - *start = _queuestart & 0xff; - - return (_ccq >> 32) & 0xff; -#else - return 0; -#endif -} - -static inline int -do_eqbs(unsigned long sch, unsigned char *state, int queue, - unsigned int *start, unsigned int *count) +static inline int do_sqbs(u64 token, unsigned char state, int queue, + int *start, int *count) { -#ifdef CONFIG_64BIT register unsigned long _ccq asm ("0") = *count; - register unsigned long _sch asm ("1") = sch; + 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 \n\t" - : "+d" (_ccq), "+d" (_queuestart), "+d" (_state) - : "d" (_sch) - : "memory", "cc" - ); + + 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; - *state = _state & 0xff; return (_ccq >> 32) & 0xff; -#else - return 0; -#endif } - -static inline int -do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2) +static inline int do_eqbs(u64 token, unsigned char *state, int queue, + int *start, int *count, int ack) { - int cc; - -#ifndef CONFIG_64BIT - 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" (schid), "d" (mask1), "d" (mask2) - : "cc", "0", "1", "2", "3" - ); -#else /* CONFIG_64BIT */ - 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" (schid), "d" (mask1), "d" (mask2) - : "cc", "0", "1", "2", "3" - ); -#endif /* CONFIG_64BIT */ - return cc; -} + 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 = (unsigned long)ack << 63; -static inline int -do_siga_input(struct subchannel_id schid, unsigned int mask) -{ - int cc; - -#ifndef CONFIG_64BIT - 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" (schid), "d" (mask) - : "cc", "0", "1", "2", "memory" - ); -#else /* CONFIG_64BIT */ - 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" (schid), "d" (mask) - : "cc", "0", "1", "2", "memory" - ); -#endif /* CONFIG_64BIT */ - - return cc; -} + 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; -static inline int -do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb, - unsigned int fc) -{ - int cc; - __u32 busy_bit; - -#ifndef CONFIG_64BIT - 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" (schid), "d" (mask), - "i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION) - : "cc", "0", "1", "2", "memory" - ); -#else /* CONFIG_64BIT */ - asm volatile ( - "llgfr 0,%5 \n\t" - "lgr 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" (schid), "d" (mask), - "i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION), "d" (fc) - : "cc", "0", "1", "2", "memory" - ); -#endif /* CONFIG_64BIT */ - - (*bb) = busy_bit; - return cc; + return (_ccq >> 32) & 0xff; } - -static inline unsigned long -do_clear_global_summary(void) -{ - - unsigned long time; - -#ifndef CONFIG_64BIT - 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_64BIT */ - 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" - ); +#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, int ack) { return 0; } #endif /* CONFIG_64BIT */ - - 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 */ +struct qdio_irq; + +struct siga_flag { + u8 input:1; + u8 output:1; + u8 sync:1; + u8 sync_after_ai:1; + u8 sync_out_after_pci:1; + u8:3; +} __attribute__ ((packed)); + +struct qdio_dev_perf_stat { + unsigned int adapter_int; + unsigned int qdio_int; + unsigned int pci_request_int; + + unsigned int tasklet_inbound; + unsigned int tasklet_inbound_resched; + unsigned int tasklet_inbound_resched2; + unsigned int tasklet_outbound; + + unsigned int siga_read; + unsigned int siga_write; + unsigned int siga_sync; -#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; + unsigned int inbound_call; + unsigned int inbound_handler; + unsigned int stop_polling; + unsigned int inbound_queue_full; + unsigned int outbound_call; + unsigned int outbound_handler; + unsigned int outbound_queue_full; + unsigned int fast_requeue; + unsigned int target_full; + unsigned int eqbs; + unsigned int eqbs_partial; + unsigned int sqbs; + unsigned int sqbs_partial; + unsigned int int_discarded; +} ____cacheline_aligned; + +struct qdio_queue_perf_stat { + /* + * Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128. + * Since max. 127 SBALs are scanned reuse entry for 128 as queue full + * aka 127 SBALs found. + */ + unsigned int nr_sbals[8]; + unsigned int nr_sbal_error; + unsigned int nr_sbal_nop; + unsigned int nr_sbal_total; }; -#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) +enum qdio_queue_irq_states { + QDIO_QUEUE_IRQS_DISABLED, +}; -#define MY_MODULE_STRING(x) #x +struct qdio_input_q { + /* input buffer acknowledgement flag */ + int polling; + /* first ACK'ed buffer */ + int ack_start; + /* how much sbals are acknowledged with qebsm */ + int ack_count; + /* last time of noticing incoming data */ + u64 timestamp; + /* upper-layer polling flag */ + unsigned long queue_irq_state; + /* callback to start upper-layer polling */ + void (*queue_start_poll) (struct ccw_device *, int, unsigned long); +}; -#ifdef CONFIG_64BIT -#define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x) -#else /* CONFIG_64BIT */ -#define QDIO_GET_ADDR(x) ((__u32)(long)x) -#endif /* CONFIG_64BIT */ +struct qdio_output_q { + /* PCIs are enabled for the queue */ + int pci_out_enabled; + /* cq: use asynchronous output buffers */ + int use_cq; + /* cq: aobs used for particual SBAL */ + struct qaob **aobs; + /* cq: sbal state related to asynchronous operation */ + struct qdio_outbuf_state *sbal_state; + /* timer to check for more outbound work */ + struct timer_list timer; + /* used SBALs before tasklet schedule */ + int scan_threshold; +}; +/* + * Note on cache alignment: grouped slsb and write mostly data at the beginning + * sbal[] is read-only and starts on a new cacheline followed by read mostly. + */ struct qdio_q { - volatile struct slsb slsb; - - char unused[QDIO_MAX_BUFFERS_PER_Q]; - - __u32 * dev_st_chg_ind; - - int is_input_q; - struct subchannel_id schid; - struct ccw_device *cdev; + struct slsb slsb; - unsigned int is_iqdio_q; - unsigned int is_thinint_q; + union { + struct qdio_input_q in; + struct qdio_output_q out; + } u; - /* bit 0 means queue 0, bit 1 means queue 1, ... */ - unsigned int mask; - unsigned int q_no; + /* + * inbound: next buffer the program should check for + * outbound: next buffer to check if adapter processed it + */ + int first_to_check; - qdio_handler_t (*handler); + /* first_to_check of the last time */ + int last_move; - /* 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; + /* beginning position for calling the program */ + int first_to_kick; - atomic_t number_of_buffers_used; - atomic_t polling; + /* number of buffers in use by the adapter */ + atomic_t nr_buf_used; - 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; + /* error condition during a data transfer */ + unsigned int qdio_error; - void *irq_ptr; + /* last scan of the queue */ + u64 timestamp; -#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 */ - + struct qdio_queue_perf_stat q_stats; - enum qdio_irq_states state; + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q] ____cacheline_aligned; - /* used to store the error condition during a data transfer */ - unsigned int qdio_error; - unsigned int siga_error; - unsigned int error_status_flags; + /* queue number */ + int nr; - /* list of interesting queues */ - volatile struct qdio_q *list_next; - volatile struct qdio_q *list_prev; + /* bitmask of queue number */ + int mask; - struct sl *sl; - volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q]; + /* input or output queue */ + int is_input_q; - struct qdio_buffer *qdio_buffers[QDIO_MAX_BUFFERS_PER_Q]; + /* list of thinint input queues */ + struct list_head entry; - unsigned long int_parm; + /* upper-layer program handler */ + qdio_handler_t (*handler); - /*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) */ + struct dentry *debugfs_q; + struct qdio_irq *irq_ptr; + struct sl *sl; + /* + * 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 { - __u32 * volatile dev_st_chg_ind; + struct qib qib; + u32 *dsci; /* address of device state change indicator */ + struct ccw_device *cdev; + struct dentry *debugfs_dev; + struct dentry *debugfs_perf; unsigned long int_parm; struct subchannel_id schid; - - unsigned int is_iqdio_irq; - unsigned int is_thinint_irq; - unsigned int hydra_gives_outbound_pcis; - unsigned int sync_done_on_outb_pcis; - - /* QEBSM facility */ - unsigned int is_qebsm; - unsigned long sch_token; + unsigned long sch_token; /* QEBSM facility */ enum qdio_irq_states state; - unsigned int no_input_qs; - unsigned int no_output_qs; + struct siga_flag siga_flag; /* siga sync information from qdioac */ - unsigned char qdioac; + int nr_input_qs; + int nr_output_qs; struct ccw1 ccw; - struct ciw equeue; struct ciw aqueue; - struct qib qib; - - void (*original_int_handler) (struct ccw_device *, - unsigned long, struct irb *); + struct qdio_ssqd_desc ssqd_desc; + void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); + + int perf_stat_enabled; - /* leave these four members together at the end. won't be cleared in qdio_fill_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 semaphore setting_up_sema; + + debug_info_t *debug_area; + struct mutex setup_mutex; + struct qdio_dev_perf_stat perf_stat; }; -#endif + +/* 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) + +#define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr)) + +#define qperf_inc(__q, __attr) \ +({ \ + struct qdio_irq *qdev = (__q)->irq_ptr; \ + if (qdev->perf_stat_enabled) \ + (qdev->perf_stat.__attr)++; \ +}) + +static inline void account_sbals_error(struct qdio_q *q, int count) +{ + q->q_stats.nr_sbal_error += count; + q->q_stats.nr_sbal_total += count; +} + +/* 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); +} + +#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_in(q) (q->irq_ptr->siga_flag.input) +#define need_siga_out(q) (q->irq_ptr->siga_flag.output) +#define need_siga_sync(q) (unlikely(q->irq_ptr->siga_flag.sync)) +#define need_siga_sync_after_ai(q) \ + (unlikely(q->irq_ptr->siga_flag.sync_after_ai)) +#define need_siga_sync_out_after_pci(q) \ + (unlikely(q->irq_ptr->siga_flag.sync_out_after_pci)) + +#define for_each_input_queue(irq_ptr, q, i) \ + for (i = 0; i < irq_ptr->nr_input_qs && \ + ({ q = irq_ptr->input_qs[i]; 1; }); i++) +#define for_each_output_queue(irq_ptr, q, i) \ + for (i = 0; i < irq_ptr->nr_output_qs && \ + ({ q = irq_ptr->output_qs[i]; 1; }); 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) +#define sub_buf(bufnr, dec) \ + ((bufnr - dec) & QDIO_MAX_BUFFERS_MASK) + +#define queue_irqs_enabled(q) \ + (test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) == 0) +#define queue_irqs_disabled(q) \ + (test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) != 0) + +extern u64 last_ai_time; + +/* prototypes for thin interrupt */ +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); +void clear_nonshared_ind(struct qdio_irq *); +int test_nonshared_ind(struct qdio_irq *); + +/* 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_create_sysfs(struct ccw_device *cdev); +void qdio_setup_destroy_sysfs(struct ccw_device *cdev); +int qdio_setup_init(void); +void qdio_setup_exit(void); +int qdio_enable_async_operation(struct qdio_output_q *q); +void qdio_disable_async_operation(struct qdio_output_q *q); +struct qaob *qdio_allocate_aob(void); + +int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr, + unsigned char *state); +#endif /* _CIO_QDIO_H */ |