X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fs390%2Fcio%2Fqdio.c;h=bc768b62af9662fcfcba049daa6ebbd0968691b1;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=f4c9779d2d4aa1a427ff78fbe40c977e0a98395a;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c index f4c9779d2..bc768b62a 100644 --- a/drivers/s390/cio/qdio.c +++ b/drivers/s390/cio/qdio.c @@ -56,7 +56,7 @@ #include "ioasm.h" #include "chsc.h" -#define VERSION_QDIO_C "$Revision: 1.80 $" +#define VERSION_QDIO_C "$Revision: 1.84 $" /****************** MODULE PARAMETER VARIABLES ********************/ MODULE_AUTHOR("Utz Bacher "); @@ -87,10 +87,10 @@ static debug_info_t *qdio_dbf_setup; static debug_info_t *qdio_dbf_sbal; static debug_info_t *qdio_dbf_trace; static debug_info_t *qdio_dbf_sense; -#ifdef QDIO_DBF_LIKE_HELL +#ifdef CONFIG_QDIO_DEBUG static debug_info_t *qdio_dbf_slsb_out; static debug_info_t *qdio_dbf_slsb_in; -#endif /* QDIO_DBF_LIKE_HELL */ +#endif /* CONFIG_QDIO_DEBUG */ /* iQDIO stuff: */ static volatile struct qdio_q *tiq_list=NULL; /* volatile as it could change @@ -354,7 +354,8 @@ qdio_stop_polling(struct qdio_q *q) SLSB_P_INPUT_NOT_INIT); /* * we don't issue this SYNC_MEMORY, as we trust Rick T and - * moreover will not use the PROCESSING state, so q->polling was 0 + * moreover will not use the PROCESSING state under VM, so + * q->polling was 0 anyway */ /*SYNC_MEMORY;*/ if (q->slsb.acc.val[gsf]!=SLSB_P_INPUT_PRIMED) @@ -513,10 +514,13 @@ inline static int qdio_is_outbound_q_done(struct qdio_q *q) { int no_used; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif no_used=atomic_read(&q->number_of_buffers_used); +#ifdef CONFIG_QDIO_DEBUG if (no_used) { sprintf(dbf_text,"oqisnt%02x",no_used); QDIO_DBF_TEXT4(0,trace,dbf_text); @@ -524,6 +528,7 @@ qdio_is_outbound_q_done(struct qdio_q *q) QDIO_DBF_TEXT4(0,trace,"oqisdone"); } QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); +#endif /* CONFIG_QDIO_DEBUG */ return (no_used==0); } @@ -551,10 +556,12 @@ inline static void qdio_kick_outbound_q(struct qdio_q *q) { int result; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; QDIO_DBF_TEXT4(0,trace,"kickoutq"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); +#endif /* CONFIG_QDIO_DEBUG */ if (!q->siga_out) return; @@ -592,16 +599,18 @@ qdio_kick_outbound_q(struct qdio_q *q) switch (result) { case 0: - /* went smooth this time, reset timestamp */ + /* went smooth this time, reset timestamp */ +#ifdef CONFIG_QDIO_DEBUG QDIO_DBF_TEXT3(0,trace,"cc2reslv"); sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no, atomic_read(&q->busy_siga_counter)); QDIO_DBF_TEXT3(0,trace,dbf_text); q->timing.busy_start=0; +#endif /* CONFIG_QDIO_DEBUG */ break; case (2|QDIO_SIGA_ERROR_B_BIT_SET): /* cc=2 and busy bit: */ - atomic_inc(&q->busy_siga_counter); + atomic_inc(&q->busy_siga_counter); /* if the last siga was successful, save * timestamp here */ @@ -615,9 +624,11 @@ qdio_kick_outbound_q(struct qdio_q *q) break; } QDIO_DBF_TEXT2(0,trace,"cc2REPRT"); +#ifdef CONFIG_QDIO_DEBUG sprintf(dbf_text,"%4x%2x%2x",q->irq,q->q_no, atomic_read(&q->busy_siga_counter)); QDIO_DBF_TEXT3(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ /* else fallthrough and report error */ default: /* for plain cc=1, 2 or 3: */ @@ -634,7 +645,9 @@ inline static void qdio_kick_outbound_handler(struct qdio_q *q) { int start, end, real_end, count; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif start = q->first_element_to_kick; /* last_move_ftc was just updated */ @@ -644,11 +657,13 @@ qdio_kick_outbound_handler(struct qdio_q *q) count = (end+QDIO_MAX_BUFFERS_PER_Q+1-start)& (QDIO_MAX_BUFFERS_PER_Q-1); +#ifdef CONFIG_QDIO_DEBUG QDIO_DBF_TEXT4(0,trace,"kickouth"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); sprintf(dbf_text,"s=%2xc=%2x",start,count); QDIO_DBF_TEXT4(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ if (q->state==QDIO_IRQ_STATE_ACTIVE) q->handler(q->cdev,QDIO_STATUS_OUTBOUND_INT| @@ -731,7 +746,12 @@ qdio_get_inbound_buffer_frontier(struct qdio_q *q) int f,f_mod_no; volatile char *slsb; int first_not_to_check; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif /* CONFIG_QDIO_DEBUG */ +#ifdef QDIO_USE_PROCESSING_STATE + int last_position=-1; +#endif /* QDIO_USE_PROCESSING_STATE */ QDIO_DBF_TEXT4(0,trace,"getibfro"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); @@ -774,8 +794,14 @@ check_next: if (q->siga_sync) { set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT); } else { - set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_PROCESSING); + /* set the previous buffer to NOT_INIT. The current + * buffer will be set to PROCESSING at the end of + * this function to avoid further interrupts. */ + if (last_position>=0) + set_slsb(&slsb[last_position], + SLSB_P_INPUT_NOT_INIT); atomic_set(&q->polling,1); + last_position=f_mod_no; } #else /* QDIO_USE_PROCESSING_STATE */ set_slsb(&slsb[f_mod_no],SLSB_P_INPUT_NOT_INIT); @@ -796,8 +822,10 @@ check_next: /* P_ERROR means frontier is reached, break and report error */ case SLSB_P_INPUT_ERROR: +#ifdef CONFIG_QDIO_DEBUG sprintf(dbf_text,"inperr%2x",f_mod_no); QDIO_DBF_TEXT3(1,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ QDIO_DBF_HEX2(1,sbal,q->sbal[f_mod_no],256); /* kind of process the buffer */ @@ -814,6 +842,10 @@ check_next: f_mod_no=(f_mod_no+1)&(QDIO_MAX_BUFFERS_PER_Q-1); atomic_dec(&q->number_of_buffers_used); +#ifdef QDIO_USE_PROCESSING_STATE + last_position=-1; +#endif /* QDIO_USE_PROCESSING_STATE */ + break; /* everything else means frontier not changed (HALTED or so) */ @@ -823,6 +855,11 @@ check_next: out: q->first_to_check=f_mod_no; +#ifdef QDIO_USE_PROCESSING_STATE + if (last_position>=0) + set_slsb(&slsb[last_position],SLSB_P_INPUT_PROCESSING); +#endif /* QDIO_USE_PROCESSING_STATE */ + QDIO_DBF_HEX4(0,trace,&q->first_to_check,sizeof(int)); return q->first_to_check; @@ -865,13 +902,16 @@ inline static int iqdio_is_inbound_q_done(struct qdio_q *q) { int no_used; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif no_used=atomic_read(&q->number_of_buffers_used); /* propagate the change from 82 to 80 through VM */ SYNC_MEMORY; +#ifdef CONFIG_QDIO_DEBUG if (no_used) { sprintf(dbf_text,"iqisnt%02x",no_used); QDIO_DBF_TEXT4(0,trace,dbf_text); @@ -879,6 +919,7 @@ iqdio_is_inbound_q_done(struct qdio_q *q) QDIO_DBF_TEXT4(0,trace,"iniqisdo"); } QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); +#endif /* CONFIG_QDIO_DEBUG */ if (!no_used) return 1; @@ -914,7 +955,9 @@ inline static int qdio_is_inbound_q_done(struct qdio_q *q) { int no_used; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif no_used=atomic_read(&q->number_of_buffers_used); @@ -949,16 +992,20 @@ qdio_is_inbound_q_done(struct qdio_q *q) * has (probably) not moved (see qdio_inbound_processing) */ if (NOW>GET_SAVED_TIMESTAMP(q)+q->timing.threshold) { +#ifdef CONFIG_QDIO_DEBUG QDIO_DBF_TEXT4(0,trace,"inqisdon"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used); QDIO_DBF_TEXT4(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ return 1; } else { +#ifdef CONFIG_QDIO_DEBUG QDIO_DBF_TEXT4(0,trace,"inqisntd"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); sprintf(dbf_text,"pf%02xcn%02x",q->first_to_check,no_used); QDIO_DBF_TEXT4(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ return 0; } } @@ -967,7 +1014,9 @@ inline static void qdio_kick_inbound_handler(struct qdio_q *q) { int count, start, end, real_end, i; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; +#endif QDIO_DBF_TEXT4(0,trace,"kickinh"); QDIO_DBF_HEX4(0,trace,&q,sizeof(void*)); @@ -985,8 +1034,10 @@ qdio_kick_inbound_handler(struct qdio_q *q) i=(i+1)&(QDIO_MAX_BUFFERS_PER_Q-1); } +#ifdef CONFIG_QDIO_DEBUG sprintf(dbf_text,"s=%2xc=%2x",start,count); QDIO_DBF_TEXT4(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ if (likely(q->state==QDIO_IRQ_STATE_ACTIVE)) q->handler(q->cdev, @@ -1160,7 +1211,7 @@ qdio_inbound_processing(struct qdio_q *q) #ifdef QDIO_USE_PROCESSING_STATE static inline int -tiqdio_do_inbound_checks(struct qdio_q *q, int q_laps) +tiqdio_reset_processing_state(struct qdio_q *q, int q_laps) { if (!q) { tiqdio_sched_tl(); @@ -1247,7 +1298,7 @@ again: do { int ret; - ret = tiqdio_do_inbound_checks(q, q_laps); + ret = tiqdio_reset_processing_state(q, q_laps); switch (ret) { case 0: return; @@ -1603,11 +1654,13 @@ static void qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state) { int i; +#ifdef CONFIG_QDIO_DEBUG char dbf_text[15]; QDIO_DBF_TEXT5(0,trace,"newstate"); sprintf(dbf_text,"%4x%4x",irq_ptr->irq,state); QDIO_DBF_TEXT5(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ irq_ptr->state=state; for (i=0;ino_input_qs;i++) @@ -1772,9 +1825,11 @@ qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) int cstat,dstat; char dbf_text[15]; +#ifdef CONFIG_QDIO_DEBUG QDIO_DBF_TEXT4(0, trace, "qint"); sprintf(dbf_text, "%s", cdev->dev.bus_id); QDIO_DBF_TEXT4(0, trace, dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ if (!intparm) { QDIO_PRINT_ERR("got unsolicited interrupt in qdio " \ @@ -1811,8 +1866,10 @@ qdio_handler(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) qdio_irq_check_sense(irq_ptr->irq, irb); +#ifdef CONFIG_QDIO_DEBUG sprintf(dbf_text, "state:%d", irq_ptr->state); QDIO_DBF_TEXT4(0, trace, dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ cstat = irb->scsw.cstat; dstat = irb->scsw.dstat; @@ -1853,18 +1910,22 @@ qdio_synchronize(struct ccw_device *cdev, unsigned int flags, int cc; struct qdio_q *q; struct qdio_irq *irq_ptr; - char dbf_text[15]="SyncXXXX"; void *ptr; +#ifdef CONFIG_QDIO_DEBUG + char dbf_text[15]="SyncXXXX"; +#endif irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; +#ifdef CONFIG_QDIO_DEBUG *((int*)(&dbf_text[4])) = irq_ptr->irq; QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN); *((int*)(&dbf_text[0]))=flags; *((int*)(&dbf_text[4]))=queue_number; QDIO_DBF_HEX4(0,trace,dbf_text,QDIO_DBF_TRACE_LEN); +#endif /* CONFIG_QDIO_DEBUG */ if (flags&QDIO_FLAG_SYNC_INPUT) { q=irq_ptr->input_qs[queue_number]; @@ -1971,77 +2032,36 @@ out: static unsigned int tiqdio_check_chsc_availability(void) { - int result; char dbf_text[15]; - struct { - struct chsc_header request; - u32 reserved1; - u32 reserved2; - u32 reserved3; - struct chsc_header response; - u32 reserved4; - u32 general_char[510]; - u32 chsc_char[518]; - } *scsc_area; - - scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); - if (!scsc_area) { - QDIO_PRINT_WARN("Was not able to determine available" \ - "CHSCs due to no memory.\n"); - return -ENOMEM; - } - - scsc_area->request = (struct chsc_header) { - .length = 0x0010, - .code = 0x0010, - }; - - result=chsc(scsc_area); - if (result) { - QDIO_PRINT_WARN("Was not able to determine " \ - "available CHSCs, cc=%i.\n", - result); - result=-EIO; - goto exit; - } + if (!css_characteristics_avail) + return -EIO; - if (scsc_area->response.code != 1) { - QDIO_PRINT_WARN("Was not able to determine " \ - "available CHSCs.\n"); - result=-EIO; - goto exit; - } /* Check for bit 41. */ - if ((scsc_area->general_char[1] & 0x00400000) != 0x00400000) { + if (!css_general_characteristics.aif) { QDIO_PRINT_WARN("Adapter interruption facility not " \ "installed.\n"); - result=-ENOENT; - goto exit; + return -ENOENT; } /* Check for bits 107 and 108. */ - if ((scsc_area->chsc_char[3] & 0x00180000) != 0x00180000) { + if (!css_chsc_characteristics.scssc || + !css_chsc_characteristics.scsscf) { QDIO_PRINT_WARN("Set Chan Subsys. Char. & Fast-CHSCs " \ "not available.\n"); - result=-ENOENT; - goto exit; + return -ENOENT; } /* Check for OSA/FCP thin interrupts (bit 67). */ - hydra_thinints = ((scsc_area->general_char[2] & 0x10000000) - == 0x10000000); + hydra_thinints = css_general_characteristics.aif_osa; sprintf(dbf_text,"hydrati%1x", hydra_thinints); QDIO_DBF_TEXT0(0,setup,dbf_text); /* Check for aif time delay disablement fac (bit 56). If installed, * omit svs even under lpar (good point by rick again) */ - omit_svs = ((scsc_area->general_char[1] & 0x00000080) - == 0x00000080); + omit_svs = css_general_characteristics.aif_tdd; sprintf(dbf_text,"omitsvs%1x", omit_svs); QDIO_DBF_TEXT0(0,setup,dbf_text); -exit: - free_page ((unsigned long) scsc_area); - return result; + return 0; } @@ -3105,11 +3125,12 @@ do_QDIO(struct ccw_device *cdev,unsigned int callflags, unsigned int count,struct qdio_buffer *buffers) { struct qdio_irq *irq_ptr; - +#ifdef CONFIG_QDIO_DEBUG char dbf_text[20]; sprintf(dbf_text,"doQD%04x",cdev->private->irq); - QDIO_DBF_TEXT3(0,trace,dbf_text); + QDIO_DBF_TEXT3(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ if ( (qidx>QDIO_MAX_BUFFERS_PER_Q) || (count>QDIO_MAX_BUFFERS_PER_Q) || @@ -3123,6 +3144,7 @@ do_QDIO(struct ccw_device *cdev,unsigned int callflags, if (!irq_ptr) return -ENODEV; +#ifdef CONFIG_QDIO_DEBUG if (callflags&QDIO_FLAG_SYNC_INPUT) QDIO_DBF_HEX3(0,trace,&irq_ptr->input_qs[queue_number], sizeof(void*)); @@ -3133,6 +3155,7 @@ do_QDIO(struct ccw_device *cdev,unsigned int callflags, QDIO_DBF_TEXT3(0,trace,dbf_text); sprintf(dbf_text,"qi%02xct%02x",qidx,count); QDIO_DBF_TEXT3(0,trace,dbf_text); +#endif /* CONFIG_QDIO_DEBUG */ if (irq_ptr->state!=QDIO_IRQ_STATE_ACTIVE) return -EBUSY; @@ -3283,12 +3306,12 @@ qdio_unregister_dbf_views(void) debug_unregister(qdio_dbf_sense); if (qdio_dbf_trace) debug_unregister(qdio_dbf_trace); -#ifdef QDIO_DBF_LIKE_HELL +#ifdef CONFIG_QDIO_DEBUG if (qdio_dbf_slsb_out) debug_unregister(qdio_dbf_slsb_out); if (qdio_dbf_slsb_in) debug_unregister(qdio_dbf_slsb_in); -#endif /* QDIO_DBF_LIKE_HELL */ +#endif /* CONFIG_QDIO_DEBUG */ } static int @@ -3333,7 +3356,7 @@ qdio_register_dbf_views(void) debug_register_view(qdio_dbf_trace,&debug_hex_ascii_view); debug_set_level(qdio_dbf_trace,QDIO_DBF_TRACE_LEVEL); -#ifdef QDIO_DBF_LIKE_HELL +#ifdef CONFIG_QDIO_DEBUG qdio_dbf_slsb_out=debug_register(QDIO_DBF_SLSB_OUT_NAME, QDIO_DBF_SLSB_OUT_INDEX, QDIO_DBF_SLSB_OUT_NR_AREAS, @@ -3351,7 +3374,7 @@ qdio_register_dbf_views(void) goto oom; debug_register_view(qdio_dbf_slsb_in,&debug_hex_ascii_view); debug_set_level(qdio_dbf_slsb_in,QDIO_DBF_SLSB_IN_LEVEL); -#endif /* QDIO_DBF_LIKE_HELL */ +#endif /* CONFIG_QDIO_DEBUG */ return 0; oom: QDIO_PRINT_ERR("not enough memory for dbf.\n");