diff options
Diffstat (limited to 'drivers/s390')
55 files changed, 910 insertions, 1635 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index e5b84db0aa0..e109da4583a 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -470,7 +470,7 @@ static int dasd_decrease_state(struct dasd_device *device) */ static void dasd_change_state(struct dasd_device *device) { - int rc; + int rc; if (device->state == device->target) /* Already where we want to go today... */ @@ -479,8 +479,10 @@ static void dasd_change_state(struct dasd_device *device) rc = dasd_increase_state(device); else rc = dasd_decrease_state(device); - if (rc && rc != -EAGAIN) - device->target = device->state; + if (rc == -EAGAIN) + return; + if (rc) + device->target = device->state; if (device->state == device->target) { wake_up(&dasd_init_waitq); @@ -667,14 +669,14 @@ static void dasd_profile_end(struct dasd_block *block, * memory and 2) dasd_smalloc_request uses the static ccw memory * that gets allocated for each device. */ -struct dasd_ccw_req *dasd_kmalloc_request(char *magic, int cplength, +struct dasd_ccw_req *dasd_kmalloc_request(int magic, int cplength, int datasize, struct dasd_device *device) { struct dasd_ccw_req *cqr; /* Sanity checks */ - BUG_ON( magic == NULL || datasize > PAGE_SIZE || + BUG_ON(datasize > PAGE_SIZE || (cplength*sizeof(struct ccw1)) > PAGE_SIZE); cqr = kzalloc(sizeof(struct dasd_ccw_req), GFP_ATOMIC); @@ -698,14 +700,13 @@ struct dasd_ccw_req *dasd_kmalloc_request(char *magic, int cplength, return ERR_PTR(-ENOMEM); } } - strncpy((char *) &cqr->magic, magic, 4); - ASCEBC((char *) &cqr->magic, 4); + cqr->magic = magic; set_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); dasd_get_device(device); return cqr; } -struct dasd_ccw_req *dasd_smalloc_request(char *magic, int cplength, +struct dasd_ccw_req *dasd_smalloc_request(int magic, int cplength, int datasize, struct dasd_device *device) { @@ -715,7 +716,7 @@ struct dasd_ccw_req *dasd_smalloc_request(char *magic, int cplength, int size; /* Sanity checks */ - BUG_ON( magic == NULL || datasize > PAGE_SIZE || + BUG_ON(datasize > PAGE_SIZE || (cplength*sizeof(struct ccw1)) > PAGE_SIZE); size = (sizeof(struct dasd_ccw_req) + 7L) & -8L; @@ -742,8 +743,7 @@ struct dasd_ccw_req *dasd_smalloc_request(char *magic, int cplength, cqr->data = data; memset(cqr->data, 0, datasize); } - strncpy((char *) &cqr->magic, magic, 4); - ASCEBC((char *) &cqr->magic, 4); + cqr->magic = magic; set_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); dasd_get_device(device); return cqr; @@ -897,9 +897,6 @@ int dasd_start_IO(struct dasd_ccw_req *cqr) switch (rc) { case 0: cqr->status = DASD_CQR_IN_IO; - DBF_DEV_EVENT(DBF_DEBUG, device, - "start_IO: request %p started successful", - cqr); break; case -EBUSY: DBF_DEV_EVENT(DBF_DEBUG, device, "%s", @@ -1697,8 +1694,11 @@ static void __dasd_process_request_queue(struct dasd_block *block) * for that. State DASD_STATE_ONLINE is normal block device * operation. */ - if (basedev->state < DASD_STATE_READY) + if (basedev->state < DASD_STATE_READY) { + while ((req = blk_fetch_request(block->request_queue))) + __blk_end_request_all(req, -EIO); return; + } /* Now we try to fetch requests from the request queue */ while (!blk_queue_plugged(queue) && (req = blk_peek_request(queue))) { if (basedev->features & DASD_FEATURE_READONLY && @@ -2133,9 +2133,9 @@ static int dasd_getgeo(struct block_device *bdev, struct hd_geometry *geo) struct dasd_device *base; block = bdev->bd_disk->private_data; - base = block->base; if (!block) return -ENODEV; + base = block->base; if (!base->discipline || !base->discipline->fill_geometry) @@ -2503,22 +2503,32 @@ int dasd_generic_restore_device(struct ccw_device *cdev) if (IS_ERR(device)) return PTR_ERR(device); + /* allow new IO again */ + device->stopped &= ~DASD_STOPPED_PM; + device->stopped &= ~DASD_UNRESUMED_PM; + dasd_schedule_device_bh(device); if (device->block) dasd_schedule_block_bh(device->block); if (device->discipline->restore) rc = device->discipline->restore(device); + if (rc) + /* + * if the resume failed for the DASD we put it in + * an UNRESUMED stop state + */ + device->stopped |= DASD_UNRESUMED_PM; dasd_put_device(device); - return rc; + return 0; } EXPORT_SYMBOL_GPL(dasd_generic_restore_device); static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, void *rdc_buffer, int rdc_buffer_size, - char *magic) + int magic) { struct dasd_ccw_req *cqr; struct ccw1 *ccw; @@ -2549,7 +2559,7 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device, } -int dasd_generic_read_dev_chars(struct dasd_device *device, char *magic, +int dasd_generic_read_dev_chars(struct dasd_device *device, int magic, void *rdc_buffer, int rdc_buffer_size) { int ret; diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 27991b69205..e8ff7b0c961 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -7,7 +7,7 @@ * */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-eckd" #include <linux/timer.h> #include <linux/slab.h> diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index 5b7bbc87593..70a008c0052 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -5,7 +5,7 @@ * Author(s): Stefan Weinhuber <wein@de.ibm.com> */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-eckd" #include <linux/list.h> #include <asm/ebcdic.h> @@ -379,8 +379,7 @@ static int read_unit_address_configuration(struct dasd_device *device, int rc; unsigned long flags; - cqr = dasd_kmalloc_request("ECKD", - 1 /* PSF */ + 1 /* RSSD */ , + cqr = dasd_kmalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data)), device); if (IS_ERR(cqr)) diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 644086ba2ed..4e49b4a6c88 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -8,7 +8,7 @@ * */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-diag" #include <linux/stddef.h> #include <linux/kernel.h> @@ -523,8 +523,7 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev, /* Build the request */ datasize = sizeof(struct dasd_diag_req) + count*sizeof(struct dasd_diag_bio); - cqr = dasd_smalloc_request(dasd_diag_discipline.name, 0, - datasize, memdev); + cqr = dasd_smalloc_request(DASD_DIAG_MAGIC, 0, datasize, memdev); if (IS_ERR(cqr)) return cqr; diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 1c28ec3e4cc..a1ce573648a 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -10,7 +10,7 @@ * Author.........: Nigel Hislop <hislop_nigel@emc.com> */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-eckd" #include <linux/stddef.h> #include <linux/kernel.h> @@ -730,7 +730,8 @@ static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device, struct dasd_ccw_req *cqr; struct ccw1 *ccw; - cqr = dasd_smalloc_request("ECKD", 1 /* RCD */, ciw->count, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* RCD */, ciw->count, + device); if (IS_ERR(cqr)) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", @@ -934,8 +935,7 @@ static int dasd_eckd_read_features(struct dasd_device *device) struct dasd_eckd_private *private; private = (struct dasd_eckd_private *) device->private; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 1 /* PSF */ + 1 /* RSSD */ , + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data) + sizeof(struct dasd_rssd_features)), device); @@ -998,7 +998,7 @@ static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device, struct dasd_psf_ssc_data *psf_ssc_data; struct ccw1 *ccw; - cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ , + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ , sizeof(struct dasd_psf_ssc_data), device); @@ -1149,8 +1149,8 @@ dasd_eckd_check_characteristics(struct dasd_device *device) goto out_err3; /* Read Device Characteristics */ - rc = dasd_generic_read_dev_chars(device, "ECKD", &private->rdc_data, - 64); + rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC, + &private->rdc_data, 64); if (rc) { DBF_EVENT(DBF_WARNING, "Read device characteristics failed, rc=%d for " @@ -1217,8 +1217,7 @@ dasd_eckd_analysis_ccw(struct dasd_device *device) cplength = 8; datasize = sizeof(struct DE_eckd_data) + 2*sizeof(struct LO_eckd_data); - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - cplength, datasize, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength, datasize, device); if (IS_ERR(cqr)) return cqr; ccw = cqr->cpaddr; @@ -1499,8 +1498,7 @@ dasd_eckd_format_device(struct dasd_device * device, return ERR_PTR(-EINVAL); } /* Allocate the format ccw request. */ - fcp = dasd_smalloc_request(dasd_eckd_discipline.name, - cplength, datasize, device); + fcp = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength, datasize, device); if (IS_ERR(fcp)) return fcp; @@ -1696,8 +1694,7 @@ static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device, DBF_DEV_EVENT(DBF_ERR, device, "%s", "unsolicited interrupt received " "(sense available)"); - device->discipline->dump_sense_dbf(device, NULL, irb, - "unsolicited"); + device->discipline->dump_sense_dbf(device, irb, "unsolicited"); } dasd_schedule_device_bh(device); @@ -1784,8 +1781,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( datasize += count*sizeof(struct LO_eckd_data); } /* Allocate the ccw request. */ - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - cplength, datasize, startdev); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength, datasize, + startdev); if (IS_ERR(cqr)) return cqr; ccw = cqr->cpaddr; @@ -1949,8 +1946,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track( cidaw * sizeof(unsigned long long); /* Allocate the ccw request. */ - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - cplength, datasize, startdev); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, cplength, datasize, + startdev); if (IS_ERR(cqr)) return cqr; ccw = cqr->cpaddr; @@ -2250,8 +2247,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track( /* Allocate the ccw request. */ itcw_size = itcw_calc_size(0, ctidaw, 0); - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 0, itcw_size, startdev); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 0, itcw_size, startdev); if (IS_ERR(cqr)) return cqr; @@ -2558,8 +2554,7 @@ dasd_eckd_release(struct dasd_device *device) if (!capable(CAP_SYS_ADMIN)) return -EACCES; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 1, 32, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1, 32, device); if (IS_ERR(cqr)) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Could not allocate initialization request"); @@ -2601,8 +2596,7 @@ dasd_eckd_reserve(struct dasd_device *device) if (!capable(CAP_SYS_ADMIN)) return -EACCES; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 1, 32, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1, 32, device); if (IS_ERR(cqr)) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Could not allocate initialization request"); @@ -2643,8 +2637,7 @@ dasd_eckd_steal_lock(struct dasd_device *device) if (!capable(CAP_SYS_ADMIN)) return -EACCES; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 1, 32, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1, 32, device); if (IS_ERR(cqr)) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Could not allocate initialization request"); @@ -2682,8 +2675,7 @@ dasd_eckd_performance(struct dasd_device *device, void __user *argp) struct ccw1 *ccw; int rc; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, - 1 /* PSF */ + 1 /* RSSD */ , + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data) + sizeof(struct dasd_rssd_perf_stats_t)), device); @@ -2829,7 +2821,7 @@ static int dasd_symm_io(struct dasd_device *device, void __user *argp) } /* setup CCWs for PSF + RSSD */ - cqr = dasd_smalloc_request("ECKD", 2 , 0, device); + cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 2 , 0, device); if (IS_ERR(cqr)) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Could not allocate initialization request"); @@ -2941,42 +2933,20 @@ dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) } static void -dasd_eckd_dump_sense_dbf(struct dasd_device *device, struct dasd_ccw_req *req, - struct irb *irb, char *reason) +dasd_eckd_dump_sense_dbf(struct dasd_device *device, struct irb *irb, + char *reason) { u64 *sense; - int sl; - struct tsb *tsb; - sense = NULL; - tsb = NULL; - if (req && scsw_is_tm(&req->irb.scsw)) { - if (irb->scsw.tm.tcw) - tsb = tcw_get_tsb( - (struct tcw *)(unsigned long)irb->scsw.tm.tcw); - if (tsb && (irb->scsw.tm.fcxs == 0x01)) { - switch (tsb->flags & 0x07) { - case 1: /* tsa_iostat */ - sense = (u64 *)tsb->tsa.iostat.sense; - break; - case 2: /* ts_ddpc */ - sense = (u64 *)tsb->tsa.ddpc.sense; - break; - case 3: /* tsa_intrg */ - break; - } - } - } else { - if (irb->esw.esw0.erw.cons) - sense = (u64 *)irb->ecw; - } + sense = (u64 *) dasd_get_sense(irb); if (sense) { - for (sl = 0; sl < 4; sl++) { - DBF_DEV_EVENT(DBF_EMERG, device, - "%s: %016llx %016llx %016llx %016llx", - reason, sense[0], sense[1], sense[2], - sense[3]); - } + DBF_DEV_EVENT(DBF_EMERG, device, + "%s: %s %02x%02x%02x %016llx %016llx %016llx " + "%016llx", reason, + scsw_is_tm(&irb->scsw) ? "t" : "c", + scsw_cc(&irb->scsw), scsw_cstat(&irb->scsw), + scsw_dstat(&irb->scsw), sense[0], sense[1], + sense[2], sense[3]); } else { DBF_DEV_EVENT(DBF_EMERG, device, "%s", "SORRY - NO VALID SENSE AVAILABLE\n"); @@ -3243,9 +3213,6 @@ int dasd_eckd_restore_device(struct dasd_device *device) int is_known, rc; struct dasd_uid temp_uid; - /* allow new IO again */ - device->stopped &= ~DASD_STOPPED_PM; - private = (struct dasd_eckd_private *) device->private; /* Read Configuration Data */ @@ -3280,7 +3247,7 @@ int dasd_eckd_restore_device(struct dasd_device *device) /* Read Device Characteristics */ memset(&private->rdc_data, 0, sizeof(private->rdc_data)); - rc = dasd_generic_read_dev_chars(device, "ECKD", + rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC, &private->rdc_data, 64); if (rc) { DBF_EVENT(DBF_WARNING, @@ -3295,12 +3262,7 @@ int dasd_eckd_restore_device(struct dasd_device *device) return 0; out_err: - /* - * if the resume failed for the DASD we put it in - * an UNRESUMED stop state - */ - device->stopped |= DASD_UNRESUMED_PM; - return 0; + return -1; } static struct ccw_driver dasd_eckd_driver = { diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c index c24c8c30380..d96039eae59 100644 --- a/drivers/s390/block/dasd_eer.c +++ b/drivers/s390/block/dasd_eer.c @@ -6,7 +6,7 @@ * Author(s): Stefan Weinhuber <wein@de.ibm.com> */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-eckd" #include <linux/init.h> #include <linux/fs.h> @@ -464,7 +464,7 @@ int dasd_eer_enable(struct dasd_device *device) if (!device->discipline || strcmp(device->discipline->name, "ECKD")) return -EPERM; /* FIXME: -EMEDIUMTYPE ? */ - cqr = dasd_kmalloc_request("ECKD", 1 /* SNSS */, + cqr = dasd_kmalloc_request(DASD_ECKD_MAGIC, 1 /* SNSS */, SNSS_DATA_SIZE, device); if (IS_ERR(cqr)) return -ENOMEM; diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c index d970ce2814b..7656384a811 100644 --- a/drivers/s390/block/dasd_erp.c +++ b/drivers/s390/block/dasd_erp.c @@ -99,8 +99,8 @@ dasd_default_erp_action(struct dasd_ccw_req *cqr) cqr->lpm = LPM_ANYPATH; cqr->status = DASD_CQR_FILLED; } else { - dev_err(&device->cdev->dev, - "default ERP has run out of retries and failed\n"); + pr_err("%s: default ERP has run out of retries and failed\n", + dev_name(&device->cdev->dev)); cqr->status = DASD_CQR_FAILED; cqr->stopclk = get_clock(); } @@ -172,7 +172,7 @@ dasd_log_sense_dbf(struct dasd_ccw_req *cqr, struct irb *irb) device = cqr->startdev; /* dump sense data to s390 debugfeature*/ if (device->discipline && device->discipline->dump_sense_dbf) - device->discipline->dump_sense_dbf(device, cqr, irb, "log"); + device->discipline->dump_sense_dbf(device, irb, "log"); } EXPORT_SYMBOL(dasd_log_sense_dbf); diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index e21ee735f92..f245377e8e2 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -5,7 +5,7 @@ * Copyright IBM Corp. 1999, 2009 */ -#define KMSG_COMPONENT "dasd" +#define KMSG_COMPONENT "dasd-fba" #include <linux/stddef.h> #include <linux/kernel.h> @@ -152,8 +152,8 @@ dasd_fba_check_characteristics(struct dasd_device *device) block->base = device; /* Read Device Characteristics */ - rc = dasd_generic_read_dev_chars(device, "FBA ", &private->rdc_data, - 32); + rc = dasd_generic_read_dev_chars(device, DASD_FBA_MAGIC, + &private->rdc_data, 32); if (rc) { DBF_EVENT(DBF_WARNING, "Read device characteristics returned " "error %d for device: %s", @@ -241,7 +241,7 @@ static void dasd_fba_handle_unsolicited_interrupt(struct dasd_device *device, /* check for unsolicited interrupts */ DBF_DEV_EVENT(DBF_WARNING, device, "%s", "unsolicited interrupt received"); - device->discipline->dump_sense_dbf(device, NULL, irb, "unsolicited"); + device->discipline->dump_sense_dbf(device, irb, "unsolicited"); dasd_schedule_device_bh(device); return; }; @@ -305,8 +305,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev, datasize += (count - 1)*sizeof(struct LO_fba_data); } /* Allocate the ccw request. */ - cqr = dasd_smalloc_request(dasd_fba_discipline.name, - cplength, datasize, memdev); + cqr = dasd_smalloc_request(DASD_FBA_MAGIC, cplength, datasize, memdev); if (IS_ERR(cqr)) return cqr; ccw = cqr->cpaddr; @@ -444,17 +443,20 @@ dasd_fba_fill_info(struct dasd_device * device, } static void -dasd_fba_dump_sense_dbf(struct dasd_device *device, struct dasd_ccw_req *req, - struct irb *irb, char *reason) +dasd_fba_dump_sense_dbf(struct dasd_device *device, struct irb *irb, + char *reason) { - int sl; - if (irb->esw.esw0.erw.cons) { - for (sl = 0; sl < 4; sl++) { - DBF_DEV_EVENT(DBF_EMERG, device, - "%s: %08x %08x %08x %08x", - reason, irb->ecw[8 * 0], irb->ecw[8 * 1], - irb->ecw[8 * 2], irb->ecw[8 * 3]); - } + u64 *sense; + + sense = (u64 *) dasd_get_sense(irb); + if (sense) { + DBF_DEV_EVENT(DBF_EMERG, device, + "%s: %s %02x%02x%02x %016llx %016llx %016llx " + "%016llx", reason, + scsw_is_tm(&irb->scsw) ? "t" : "c", + scsw_cc(&irb->scsw), scsw_cstat(&irb->scsw), + scsw_dstat(&irb->scsw), sense[0], sense[1], + sense[2], sense[3]); } else { DBF_DEV_EVENT(DBF_EMERG, device, "%s", "SORRY - NO VALID SENSE AVAILABLE\n"); diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index fd63b2f2bda..5e47a1ee52b 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -59,6 +59,11 @@ #include <asm/dasd.h> #include <asm/idals.h> +/* DASD discipline magic */ +#define DASD_ECKD_MAGIC 0xC5C3D2C4 +#define DASD_DIAG_MAGIC 0xC4C9C1C7 +#define DASD_FBA_MAGIC 0xC6C2C140 + /* * SECTION: Type definitions */ @@ -284,8 +289,7 @@ struct dasd_discipline { dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *); void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *, struct irb *); - void (*dump_sense_dbf) (struct dasd_device *, struct dasd_ccw_req *, - struct irb *, char *); + void (*dump_sense_dbf) (struct dasd_device *, struct irb *, char *); void (*handle_unsolicited_interrupt) (struct dasd_device *, struct irb *); @@ -541,9 +545,9 @@ extern struct block_device_operations dasd_device_operations; extern struct kmem_cache *dasd_page_cache; struct dasd_ccw_req * -dasd_kmalloc_request(char *, int, int, struct dasd_device *); +dasd_kmalloc_request(int , int, int, struct dasd_device *); struct dasd_ccw_req * -dasd_smalloc_request(char *, int, int, struct dasd_device *); +dasd_smalloc_request(int , int, int, struct dasd_device *); void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *); void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *); @@ -588,7 +592,7 @@ void dasd_generic_handle_state_change(struct dasd_device *); int dasd_generic_pm_freeze(struct ccw_device *); int dasd_generic_restore_device(struct ccw_device *); -int dasd_generic_read_dev_chars(struct dasd_device *, char *, void *, int); +int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int); char *dasd_get_sense(struct irb *); /* externals in dasd_devmap.c */ diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c index 4ce3f72ee1c..f756a1b0c57 100644 --- a/drivers/s390/block/dasd_ioctl.c +++ b/drivers/s390/block/dasd_ioctl.c @@ -16,6 +16,7 @@ #include <linux/major.h> #include <linux/fs.h> #include <linux/blkpg.h> +#include <linux/smp_lock.h> #include <asm/ccwdev.h> #include <asm/cmb.h> @@ -97,8 +98,8 @@ static int dasd_ioctl_quiesce(struct dasd_block *block) if (!capable (CAP_SYS_ADMIN)) return -EACCES; - dev_info(&base->cdev->dev, "The DASD has been put in the quiesce " - "state\n"); + pr_info("%s: The DASD has been put in the quiesce " + "state\n", dev_name(&base->cdev->dev)); spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags); base->stopped |= DASD_STOPPED_QUIESCE; spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags); @@ -118,8 +119,8 @@ static int dasd_ioctl_resume(struct dasd_block *block) if (!capable (CAP_SYS_ADMIN)) return -EACCES; - dev_info(&base->cdev->dev, "I/O operations have been resumed " - "on the DASD\n"); + pr_info("%s: I/O operations have been resumed " + "on the DASD\n", dev_name(&base->cdev->dev)); spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags); base->stopped &= ~DASD_STOPPED_QUIESCE; spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags); @@ -145,8 +146,8 @@ static int dasd_format(struct dasd_block *block, struct format_data_t *fdata) return -EPERM; if (base->state != DASD_STATE_BASIC) { - dev_warn(&base->cdev->dev, - "The DASD cannot be formatted while it is enabled\n"); + pr_warning("%s: The DASD cannot be formatted while it is " + "enabled\n", dev_name(&base->cdev->dev)); return -EBUSY; } @@ -174,9 +175,9 @@ static int dasd_format(struct dasd_block *block, struct format_data_t *fdata) dasd_sfree_request(cqr, cqr->memdev); if (rc) { if (rc != -ERESTARTSYS) - dev_err(&base->cdev->dev, - "Formatting unit %d failed with " - "rc=%d\n", fdata->start_unit, rc); + pr_err("%s: Formatting unit %d failed with " + "rc=%d\n", dev_name(&base->cdev->dev), + fdata->start_unit, rc); return rc; } fdata->start_unit++; @@ -203,9 +204,9 @@ dasd_ioctl_format(struct block_device *bdev, void __user *argp) if (copy_from_user(&fdata, argp, sizeof(struct format_data_t))) return -EFAULT; if (bdev != bdev->bd_contains) { - dev_warn(&block->base->cdev->dev, - "The specified DASD is a partition and cannot be " - "formatted\n"); + pr_warning("%s: The specified DASD is a partition and cannot " + "be formatted\n", + dev_name(&block->base->cdev->dev)); return -EINVAL; } return dasd_format(block, &fdata); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 016f9e9d259..d34617682a6 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -964,7 +964,8 @@ static int dcssblk_freeze(struct device *dev) break; } if (rc) - pr_err("Suspend failed because device %s is writeable.\n", + pr_err("Suspending the system failed because DCSS device %s " + "is writable\n", dev_info->segment_name); return rc; } @@ -987,8 +988,8 @@ static int dcssblk_restore(struct device *dev) goto out_panic; } if (start != entry->start || end != entry->end) { - pr_err("Mismatch of start / end address after " - "resuming device %s\n", + pr_err("The address range of DCSS %s changed " + "while the system was suspended\n", entry->segment_name); goto out_panic; } diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index 2e9e1ecd6d8..ee604e92a5f 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -42,7 +42,6 @@ #include <linux/suspend.h> #include <linux/platform_device.h> #include <asm/uaccess.h> -#include <asm/checksum.h> #define XPRAM_NAME "xpram" #define XPRAM_DEVS 1 /* one partition */ @@ -51,7 +50,6 @@ typedef struct { unsigned int size; /* size of xpram segment in pages */ unsigned int offset; /* start page of xpram segment */ - unsigned int csum; /* partition checksum for suspend */ } xpram_device_t; static xpram_device_t xpram_devices[XPRAM_MAX_DEVS]; @@ -387,63 +385,11 @@ out: } /* - * Save checksums for all partitions. - */ -static int xpram_save_checksums(void) -{ - unsigned long mem_page; - int rc, i; - - rc = 0; - mem_page = (unsigned long) __get_free_page(GFP_KERNEL); - if (!mem_page) - return -ENOMEM; - for (i = 0; i < xpram_devs; i++) { - rc = xpram_page_in(mem_page, xpram_devices[i].offset); - if (rc) - goto fail; - xpram_devices[i].csum = csum_partial((const void *) mem_page, - PAGE_SIZE, 0); - } -fail: - free_page(mem_page); - return rc ? -ENXIO : 0; -} - -/* - * Verify checksums for all partitions. - */ -static int xpram_validate_checksums(void) -{ - unsigned long mem_page; - unsigned int csum; - int rc, i; - - rc = 0; - mem_page = (unsigned long) __get_free_page(GFP_KERNEL); - if (!mem_page) - return -ENOMEM; - for (i = 0; i < xpram_devs; i++) { - rc = xpram_page_in(mem_page, xpram_devices[i].offset); - if (rc) - goto fail; - csum = csum_partial((const void *) mem_page, PAGE_SIZE, 0); - if (xpram_devices[i].csum != csum) { - rc = -EINVAL; - goto fail; - } - } -fail: - free_page(mem_page); - return rc ? -ENXIO : 0; -} - -/* * Resume failed: Print error message and call panic. */ static void xpram_resume_error(const char *message) { - pr_err("Resume error: %s\n", message); + pr_err("Resuming the system failed: %s\n", message); panic("xpram resume error\n"); } @@ -458,21 +404,10 @@ static int xpram_restore(struct device *dev) xpram_resume_error("xpram disappeared"); if (xpram_pages != xpram_highest_page_index() + 1) xpram_resume_error("Size of xpram changed"); - if (xpram_validate_checksums()) - xpram_resume_error("Data of xpram changed"); return 0; } -/* - * Save necessary state in suspend. - */ -static int xpram_freeze(struct device *dev) -{ - return xpram_save_checksums(); -} - static struct dev_pm_ops xpram_pm_ops = { - .freeze = xpram_freeze, .restore = xpram_restore, }; diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig index 0769ced52db..4e34d3686c2 100644 --- a/drivers/s390/char/Kconfig +++ b/drivers/s390/char/Kconfig @@ -82,6 +82,16 @@ config SCLP_CPI You should only select this option if you know what you are doing, need this feature and intend to run your kernel in LPAR. +config SCLP_ASYNC + tristate "Support for Call Home via Asynchronous SCLP Records" + depends on S390 + help + This option enables the call home function, which is able to inform + the service element and connected organisations about a kernel panic. + You should only select this option if you know what you are doing, + want for inform other people about your kernel panics, + need this feature and intend to run your kernel in LPAR. + config S390_TAPE tristate "S/390 tape device support" depends on CCW diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile index 7e73e39a174..efb500ab66c 100644 --- a/drivers/s390/char/Makefile +++ b/drivers/s390/char/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_SCLP_TTY) += sclp_tty.o obj-$(CONFIG_SCLP_CONSOLE) += sclp_con.o obj-$(CONFIG_SCLP_VT220_TTY) += sclp_vt220.o obj-$(CONFIG_SCLP_CPI) += sclp_cpi.o +obj-$(CONFIG_SCLP_ASYNC) += sclp_async.o obj-$(CONFIG_ZVM_WATCHDOG) += vmwatchdog.o obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index 04dc734805c..21639d6c996 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -20,10 +20,7 @@ #include <linux/interrupt.h> #include <linux/err.h> #include <linux/reboot.h> - #include <linux/slab.h> -#include <linux/bootmem.h> - #include <asm/ccwdev.h> #include <asm/cio.h> #include <asm/io.h> @@ -735,7 +732,7 @@ static int raw3215_pm_stop(struct ccw_device *cdev) unsigned long flags; /* Empty the output buffer, then prevent new I/O. */ - raw = cdev->dev.driver_data; + raw = dev_get_drvdata(&cdev->dev); spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags); raw3215_make_room(raw, RAW3215_BUFFER_SIZE); raw->flags |= RAW3215_FROZEN; @@ -749,7 +746,7 @@ static int raw3215_pm_start(struct ccw_device *cdev) unsigned long flags; /* Allow I/O again and flush output buffer. */ - raw = cdev->dev.driver_data; + raw = dev_get_drvdata(&cdev->dev); spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags); raw->flags &= ~RAW3215_FROZEN; raw->flags |= RAW3215_FLUSHING; @@ -883,7 +880,7 @@ static int __init con3215_init(void) raw3215_freelist = NULL; spin_lock_init(&raw3215_freelist_lock); for (i = 0; i < NR_3215_REQ; i++) { - req = (struct raw3215_req *) alloc_bootmem_low(sizeof(struct raw3215_req)); + req = kzalloc(sizeof(struct raw3215_req), GFP_KERNEL | GFP_DMA); req->next = raw3215_freelist; raw3215_freelist = req; } @@ -893,10 +890,9 @@ static int __init con3215_init(void) return -ENODEV; raw3215[0] = raw = (struct raw3215_info *) - alloc_bootmem_low(sizeof(struct raw3215_info)); - memset(raw, 0, sizeof(struct raw3215_info)); - raw->buffer = (char *) alloc_bootmem_low(RAW3215_BUFFER_SIZE); - raw->inbuf = (char *) alloc_bootmem_low(RAW3215_INBUF_SIZE); + kzalloc(sizeof(struct raw3215_info), GFP_KERNEL | GFP_DMA); + raw->buffer = kzalloc(RAW3215_BUFFER_SIZE, GFP_KERNEL | GFP_DMA); + raw->inbuf = kzalloc(RAW3215_INBUF_SIZE, GFP_KERNEL | GFP_DMA); raw->cdev = cdev; dev_set_drvdata(&cdev->dev, raw); cdev->handler = raw3215_irq; @@ -906,9 +902,9 @@ static int __init con3215_init(void) /* Request the console irq */ if (raw3215_startup(raw) != 0) { - free_bootmem((unsigned long) raw->inbuf, RAW3215_INBUF_SIZE); - free_bootmem((unsigned long) raw->buffer, RAW3215_BUFFER_SIZE); - free_bootmem((unsigned long) raw, sizeof(struct raw3215_info)); + kfree(raw->inbuf); + kfree(raw->buffer); + kfree(raw); raw3215[0] = NULL; return -ENODEV; } diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 44d02e371c0..bb838bdf829 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -7,7 +7,6 @@ * Copyright IBM Corp. 2003, 2009 */ -#include <linux/bootmem.h> #include <linux/console.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -600,16 +599,14 @@ con3270_init(void) if (IS_ERR(rp)) return PTR_ERR(rp); - condev = (struct con3270 *) alloc_bootmem_low(sizeof(struct con3270)); - memset(condev, 0, sizeof(struct con3270)); + condev = kzalloc(sizeof(struct con3270), GFP_KERNEL | GFP_DMA); condev->view.dev = rp; - condev->read = raw3270_request_alloc_bootmem(0); + condev->read = raw3270_request_alloc(0); condev->read->callback = con3270_read_callback; condev->read->callback_data = condev; - condev->write = - raw3270_request_alloc_bootmem(CON3270_OUTPUT_BUFFER_SIZE); - condev->kreset = raw3270_request_alloc_bootmem(1); + condev->write = raw3270_request_alloc(CON3270_OUTPUT_BUFFER_SIZE); + condev->kreset = raw3270_request_alloc(1); INIT_LIST_HEAD(&condev->lines); INIT_LIST_HEAD(&condev->update); @@ -623,7 +620,7 @@ con3270_init(void) INIT_LIST_HEAD(&condev->freemem); for (i = 0; i < CON3270_STRING_PAGES; i++) { - cbuf = (void *) alloc_bootmem_low_pages(PAGE_SIZE); + cbuf = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); add_string_memory(&condev->freemem, cbuf, PAGE_SIZE); } condev->cline = alloc_string(&condev->freemem, condev->view.cols); diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index 75a8831eebb..89ece1c235a 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -320,7 +320,7 @@ static int mon_open(struct inode *inode, struct file *filp) goto out_path; } filp->private_data = monpriv; - monreader_device->driver_data = monpriv; + dev_set_drvdata(monreader_device, monpriv); unlock_kernel(); return nonseekable_open(inode, filp); @@ -463,7 +463,7 @@ static struct miscdevice mon_dev = { *****************************************************************************/ static int monreader_freeze(struct device *dev) { - struct mon_private *monpriv = dev->driver_data; + struct mon_private *monpriv = dev_get_drvdata(dev); int rc; if (!monpriv) @@ -487,7 +487,7 @@ static int monreader_freeze(struct device *dev) static int monreader_thaw(struct device *dev) { - struct mon_private *monpriv = dev->driver_data; + struct mon_private *monpriv = dev_get_drvdata(dev); int rc; if (!monpriv) @@ -581,7 +581,7 @@ static int __init mon_init(void) monreader_device->release = (void (*)(struct device *))kfree; rc = device_register(monreader_device); if (rc) { - kfree(monreader_device); + put_device(monreader_device); goto out_driver; } diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index acab7b2dfe8..d6a022f55e9 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -7,7 +7,6 @@ * Copyright IBM Corp. 2003, 2009 */ -#include <linux/bootmem.h> #include <linux/module.h> #include <linux/err.h> #include <linux/init.h> @@ -143,33 +142,6 @@ raw3270_request_alloc(size_t size) return rq; } -#ifdef CONFIG_TN3270_CONSOLE -/* - * Allocate a new 3270 ccw request from bootmem. Only works very - * early in the boot process. Only con3270.c should be using this. - */ -struct raw3270_request __init *raw3270_request_alloc_bootmem(size_t size) -{ - struct raw3270_request *rq; - - rq = alloc_bootmem_low(sizeof(struct raw3270)); - - /* alloc output buffer. */ - if (size > 0) - rq->buffer = alloc_bootmem_low(size); - rq->size = size; - INIT_LIST_HEAD(&rq->list); - - /* - * Setup ccw. - */ - rq->ccw.cda = __pa(rq->buffer); - rq->ccw.flags = CCW_FLAG_SLI; - - return rq; -} -#endif - /* * Free 3270 ccw request */ @@ -846,8 +818,8 @@ struct raw3270 __init *raw3270_setup_console(struct ccw_device *cdev) char *ascebc; int rc; - rp = (struct raw3270 *) alloc_bootmem_low(sizeof(struct raw3270)); - ascebc = (char *) alloc_bootmem(256); + rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA); + ascebc = kzalloc(256, GFP_KERNEL); rc = raw3270_setup_device(cdev, rp, ascebc); if (rc) return ERR_PTR(rc); @@ -1350,7 +1322,7 @@ static int raw3270_pm_stop(struct ccw_device *cdev) struct raw3270_view *view; unsigned long flags; - rp = cdev->dev.driver_data; + rp = dev_get_drvdata(&cdev->dev); if (!rp) return 0; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); @@ -1376,7 +1348,7 @@ static int raw3270_pm_start(struct ccw_device *cdev) struct raw3270 *rp; unsigned long flags; - rp = cdev->dev.driver_data; + rp = dev_get_drvdata(&cdev->dev); if (!rp) return 0; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index 60e7cb07095..6bb5a6bdfab 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -27,6 +27,7 @@ #define EVTYP_VT220MSG 0x1A #define EVTYP_CONFMGMDATA 0x04 #define EVTYP_SDIAS 0x1C +#define EVTYP_ASYNC 0x0A #define EVTYP_OPCMD_MASK 0x80000000 #define EVTYP_MSG_MASK 0x40000000 @@ -38,6 +39,7 @@ #define EVTYP_VT220MSG_MASK 0x00000040 #define EVTYP_CONFMGMDATA_MASK 0x10000000 #define EVTYP_SDIAS_MASK 0x00000010 +#define EVTYP_ASYNC_MASK 0x00400000 #define GNRLMSGFLGS_DOM 0x8000 #define GNRLMSGFLGS_SNDALRM 0x4000 @@ -85,12 +87,12 @@ struct sccb_header { } __attribute__((packed)); extern u64 sclp_facilities; - #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL) + struct gds_subvector { u8 length; u8 key; diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c new file mode 100644 index 00000000000..daaec185ed3 --- /dev/null +++ b/drivers/s390/char/sclp_async.c @@ -0,0 +1,224 @@ +/* + * Enable Asynchronous Notification via SCLP. + * + * Copyright IBM Corp. 2009 + * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/stat.h> +#include <linux/string.h> +#include <linux/ctype.h> +#include <linux/kmod.h> +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/proc_fs.h> +#include <linux/sysctl.h> +#include <linux/utsname.h> +#include "sclp.h" + +static int callhome_enabled; +static struct sclp_req *request; +static struct sclp_async_sccb *sccb; +static int sclp_async_send_wait(char *message); +static struct ctl_table_header *callhome_sysctl_header; +static DEFINE_SPINLOCK(sclp_async_lock); +static char nodename[64]; +#define SCLP_NORMAL_WRITE 0x00 + +struct async_evbuf { + struct evbuf_header header; + u64 reserved; + u8 rflags; + u8 empty; + u8 rtype; + u8 otype; + char comp_id[12]; + char data[3000]; /* there is still some space left */ +} __attribute__((packed)); + +struct sclp_async_sccb { + struct sccb_header header; + struct async_evbuf evbuf; +} __attribute__((packed)); + +static struct sclp_register sclp_async_register = { + .send_mask = EVTYP_ASYNC_MASK, +}; + +static int call_home_on_panic(struct notifier_block *self, + unsigned long event, void *data) +{ + strncat(data, nodename, strlen(nodename)); + sclp_async_send_wait(data); + return NOTIFY_DONE; +} + +static struct notifier_block call_home_panic_nb = { + .notifier_call = call_home_on_panic, + .priority = INT_MAX, +}; + +static int proc_handler_callhome(ctl_table *ctl, int write, struct file *filp, + void __user *buffer, size_t *count, + loff_t *ppos) +{ + unsigned long val; + int len, rc; + char buf[2]; + + if (!*count | (*ppos && !write)) { + *count = 0; + return 0; + } + if (!write) { + len = sprintf(buf, "%d\n", callhome_enabled); + buf[len] = '\0'; + rc = copy_to_user(buffer, buf, sizeof(buf)); + if (rc != 0) + return -EFAULT; + } else { + len = *count; + rc = copy_from_user(buf, buffer, sizeof(buf)); + if (rc != 0) + return -EFAULT; + if (strict_strtoul(buf, 0, &val) != 0) + return -EINVAL; + if (val != 0 && val != 1) + return -EINVAL; + callhome_enabled = val; + } + *count = len; + *ppos += len; + return 0; +} + +static struct ctl_table callhome_table[] = { + { + .procname = "callhome", + .mode = 0644, + .proc_handler = &proc_handler_callhome, + }, + { .ctl_name = 0 } +}; + +static struct ctl_table kern_dir_table[] = { + { + .ctl_name = CTL_KERN, + .procname = "kernel", + .maxlen = 0, + .mode = 0555, + .child = callhome_table, + }, + { .ctl_name = 0 } +}; + +/* + * Function used to transfer asynchronous notification + * records which waits for send completion + */ +static int sclp_async_send_wait(char *message) +{ + struct async_evbuf *evb; + int rc; + unsigned long flags; + + if (!callhome_enabled) + return 0; + sccb->evbuf.header.type = EVTYP_ASYNC; + sccb->evbuf.rtype = 0xA5; + sccb->evbuf.otype = 0x00; + evb = &sccb->evbuf; + request->command = SCLP_CMDW_WRITE_EVENT_DATA; + request->sccb = sccb; + request->status = SCLP_REQ_FILLED; + strncpy(sccb->evbuf.data, message, sizeof(sccb->evbuf.data)); + /* + * Retain Queue + * e.g. 5639CC140 500 Red Hat RHEL5 Linux for zSeries (RHEL AS) + */ + strncpy(sccb->evbuf.comp_id, "000000000", sizeof(sccb->evbuf.comp_id)); + sccb->evbuf.header.length = sizeof(sccb->evbuf); + sccb->header.length = sizeof(sccb->evbuf) + sizeof(sccb->header); + sccb->header.function_code = SCLP_NORMAL_WRITE; + rc = sclp_add_request(request); + if (rc) + return rc; + spin_lock_irqsave(&sclp_async_lock, flags); + while (request->status != SCLP_REQ_DONE && + request->status != SCLP_REQ_FAILED) { + sclp_sync_wait(); + } + spin_unlock_irqrestore(&sclp_async_lock, flags); + if (request->status != SCLP_REQ_DONE) + return -EIO; + rc = ((struct sclp_async_sccb *) + request->sccb)->header.response_code; + if (rc != 0x0020) + return -EIO; + if (evb->header.flags != 0x80) + return -EIO; + return rc; +} + +static int __init sclp_async_init(void) +{ + int rc; + + rc = sclp_register(&sclp_async_register); + if (rc) + return rc; + callhome_sysctl_header = register_sysctl_table(kern_dir_table); + if (!callhome_sysctl_header) { + rc = -ENOMEM; + goto out_sclp; + } + if (!(sclp_async_register.sclp_receive_mask & EVTYP_ASYNC_MASK)) { + rc = -EOPNOTSUPP; + goto out_sclp; + } + rc = -ENOMEM; + request = kzalloc(sizeof(struct sclp_req), GFP_KERNEL); + if (!request) + goto out_sys; + sccb = (struct sclp_async_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + if (!sccb) + goto out_mem; + rc = atomic_notifier_chain_register(&panic_notifier_list, + &call_home_panic_nb); + if (rc) + goto out_mem; + + strncpy(nodename, init_utsname()->nodename, 64); + return 0; + +out_mem: + kfree(request); + free_page((unsigned long) sccb); +out_sys: + unregister_sysctl_table(callhome_sysctl_header); +out_sclp: + sclp_unregister(&sclp_async_register); + return rc; + +} +module_init(sclp_async_init); + +static void __exit sclp_async_exit(void) +{ + atomic_notifier_chain_unregister(&panic_notifier_list, + &call_home_panic_nb); + unregister_sysctl_table(callhome_sysctl_header); + sclp_unregister(&sclp_async_register); + free_page((unsigned long) sccb); + kfree(request); +} +module_exit(sclp_async_exit); + +MODULE_AUTHOR("Copyright IBM Corp. 2009"); +MODULE_AUTHOR("Hans-Joachim Picht <hans@linux.vnet.ibm.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("SCLP Asynchronous Notification Records"); diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c index 336811a7767..ad698d30cb3 100644 --- a/drivers/s390/char/sclp_con.c +++ b/drivers/s390/char/sclp_con.c @@ -11,7 +11,6 @@ #include <linux/init.h> #include <linux/timer.h> #include <linux/jiffies.h> -#include <linux/bootmem.h> #include <linux/termios.h> #include <linux/err.h> #include <linux/reboot.h> @@ -110,7 +109,7 @@ static void sclp_console_sync_queue(void) spin_lock_irqsave(&sclp_con_lock, flags); if (timer_pending(&sclp_con_timer)) - del_timer_sync(&sclp_con_timer); + del_timer(&sclp_con_timer); while (sclp_con_queue_running) { spin_unlock_irqrestore(&sclp_con_lock, flags); sclp_sync_wait(); @@ -298,8 +297,8 @@ sclp_console_init(void) /* Allocate pages for output buffering */ INIT_LIST_HEAD(&sclp_con_pages); for (i = 0; i < MAX_CONSOLE_PAGES; i++) { - page = alloc_bootmem_low_pages(PAGE_SIZE); - list_add_tail((struct list_head *) page, &sclp_con_pages); + page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + list_add_tail(page, &sclp_con_pages); } INIT_LIST_HEAD(&sclp_con_outqueue); spin_lock_init(&sclp_con_lock); diff --git a/drivers/s390/char/sclp_rw.h b/drivers/s390/char/sclp_rw.h index 85f491ea929..7a7bfc947d9 100644 --- a/drivers/s390/char/sclp_rw.h +++ b/drivers/s390/char/sclp_rw.h @@ -92,5 +92,10 @@ void sclp_set_columns(struct sclp_buffer *, unsigned short); void sclp_set_htab(struct sclp_buffer *, unsigned short); int sclp_chars_in_buffer(struct sclp_buffer *); +#ifdef CONFIG_SCLP_CONSOLE void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event); +#else +static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { } +#endif + #endif /* __SCLP_RW_H__ */ diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index 5518e24946a..178724f2a4c 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -20,7 +20,6 @@ #include <linux/major.h> #include <linux/console.h> #include <linux/kdev_t.h> -#include <linux/bootmem.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/reboot.h> @@ -601,10 +600,7 @@ static void __init __sclp_vt220_free_pages(void) list_for_each_safe(page, p, &sclp_vt220_empty) { list_del(page); - if (slab_is_available()) - free_page((unsigned long) page); - else - free_bootmem((unsigned long) page, PAGE_SIZE); + free_page((unsigned long) page); } } @@ -640,16 +636,12 @@ static int __init __sclp_vt220_init(int num_pages) sclp_vt220_flush_later = 0; /* Allocate pages for output buffering */ + rc = -ENOMEM; for (i = 0; i < num_pages; i++) { - if (slab_is_available()) - page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); - else - page = alloc_bootmem_low_pages(PAGE_SIZE); - if (!page) { - rc = -ENOMEM; + page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + if (!page) goto out; - } - list_add_tail((struct list_head *) page, &sclp_vt220_empty); + list_add_tail(page, &sclp_vt220_empty); } rc = sclp_register(&sclp_vt220_register); out: diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c index 5a519fac37b..2fe45ff77b7 100644 --- a/drivers/s390/char/tape_34xx.c +++ b/drivers/s390/char/tape_34xx.c @@ -8,7 +8,7 @@ * Martin Schwidefsky <schwidefsky@de.ibm.com> */ -#define KMSG_COMPONENT "tape" +#define KMSG_COMPONENT "tape_34xx" #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 418f72dd39b..e4cc3aae916 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -8,7 +8,7 @@ * Martin Schwidefsky <schwidefsky@de.ibm.com> */ -#define KMSG_COMPONENT "tape" +#define KMSG_COMPONENT "tape_3590" #include <linux/module.h> #include <linux/init.h> @@ -39,8 +39,6 @@ EXPORT_SYMBOL(TAPE_DBF_AREA); * - Read Alternate: implemented *******************************************************************/ -#define KMSG_COMPONENT "tape" - static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { [0x00] = "", [0x10] = "Lost Sense", diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c index 47ff695255e..4cb9e70507a 100644 --- a/drivers/s390/char/tape_block.c +++ b/drivers/s390/char/tape_block.c @@ -302,8 +302,6 @@ tapeblock_revalidate_disk(struct gendisk *disk) if (!device->blk_data.medium_changed) return 0; - dev_info(&device->cdev->dev, "Determining the size of the recorded " - "area...\n"); rc = tape_mtop(device, MTFSFM, 1); if (rc) return rc; @@ -312,6 +310,8 @@ tapeblock_revalidate_disk(struct gendisk *disk) if (rc < 0) return rc; + pr_info("%s: Determining the size of the recorded area...\n", + dev_name(&device->cdev->dev)); DBF_LH(3, "Image file ends at %d\n", rc); nr_of_blks = rc; @@ -330,8 +330,8 @@ tapeblock_revalidate_disk(struct gendisk *disk) device->bof = rc; nr_of_blks -= rc; - dev_info(&device->cdev->dev, "The size of the recorded area is %i " - "blocks\n", nr_of_blks); + pr_info("%s: The size of the recorded area is %i blocks\n", + dev_name(&device->cdev->dev), nr_of_blks); set_capacity(device->blk_data.disk, nr_of_blks*(TAPEBLOCK_HSEC_SIZE/512)); @@ -366,8 +366,8 @@ tapeblock_open(struct block_device *bdev, fmode_t mode) if (device->required_tapemarks) { DBF_EVENT(2, "TBLOCK: missing tapemarks\n"); - dev_warn(&device->cdev->dev, "Opening the tape failed because" - " of missing end-of-file marks\n"); + pr_warning("%s: Opening the tape failed because of missing " + "end-of-file marks\n", dev_name(&device->cdev->dev)); rc = -EPERM; goto put_device; } diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index 595aa04cfd0..5cd31e07164 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -214,13 +214,15 @@ tape_med_state_set(struct tape_device *device, enum tape_medium_state newstate) switch(newstate){ case MS_UNLOADED: device->tape_generic_status |= GMT_DR_OPEN(~0); - dev_info(&device->cdev->dev, "The tape cartridge has been " - "successfully unloaded\n"); + if (device->medium_state == MS_LOADED) + pr_info("%s: The tape cartridge has been successfully " + "unloaded\n", dev_name(&device->cdev->dev)); break; case MS_LOADED: device->tape_generic_status &= ~GMT_DR_OPEN(~0); - dev_info(&device->cdev->dev, "A tape cartridge has been " - "mounted\n"); + if (device->medium_state == MS_UNLOADED) + pr_info("%s: A tape cartridge has been mounted\n", + dev_name(&device->cdev->dev)); break; default: // print nothing @@ -358,11 +360,11 @@ tape_generic_online(struct tape_device *device, out_char: tapechar_cleanup_device(device); +out_minor: + tape_remove_minor(device); out_discipline: device->discipline->cleanup_device(device); device->discipline = NULL; -out_minor: - tape_remove_minor(device); out: module_put(discipline->owner); return rc; @@ -396,7 +398,7 @@ int tape_generic_pm_suspend(struct ccw_device *cdev) { struct tape_device *device; - device = cdev->dev.driver_data; + device = dev_get_drvdata(&cdev->dev); if (!device) { return -ENODEV; } @@ -654,8 +656,8 @@ tape_generic_remove(struct ccw_device *cdev) */ DBF_EVENT(3, "(%08x): Drive in use vanished!\n", device->cdev_id); - dev_warn(&device->cdev->dev, "A tape unit was detached" - " while in use\n"); + pr_warning("%s: A tape unit was detached while in " + "use\n", dev_name(&device->cdev->dev)); tape_state_set(device, TS_NOT_OPER); __tape_discard_requests(device); spin_unlock_irq(get_ccwdev_lock(device->cdev)); diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c index 1a9420ba518..750354ad16e 100644 --- a/drivers/s390/char/tape_std.c +++ b/drivers/s390/char/tape_std.c @@ -68,7 +68,7 @@ tape_std_assign(struct tape_device *device) * to another host (actually this shouldn't happen but it does). * So we set up a timeout for this call. */ - init_timer(&timeout); + init_timer_on_stack(&timeout); timeout.function = tape_std_assign_timeout; timeout.data = (unsigned long) request; timeout.expires = jiffies + 2 * HZ; diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c index 411cfa3c771..d1a142fa3eb 100644 --- a/drivers/s390/char/vmlogrdr.c +++ b/drivers/s390/char/vmlogrdr.c @@ -663,7 +663,7 @@ static struct attribute *vmlogrdr_attrs[] = { static int vmlogrdr_pm_prepare(struct device *dev) { int rc; - struct vmlogrdr_priv_t *priv = dev->driver_data; + struct vmlogrdr_priv_t *priv = dev_get_drvdata(dev); rc = 0; if (priv) { @@ -753,7 +753,7 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) dev->bus = &iucv_bus; dev->parent = iucv_root; dev->driver = &vmlogrdr_driver; - dev->driver_data = priv; + dev_set_drvdata(dev, priv); /* * The release function could be called after the * module has been unloaded. It's _only_ task is to @@ -765,8 +765,10 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) } else return -ENOMEM; ret = device_register(dev); - if (ret) + if (ret) { + put_device(dev); return ret; + } ret = sysfs_create_group(&dev->kobj, &vmlogrdr_attr_group); if (ret) { diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c index 7d9e67cb647..77571b68539 100644 --- a/drivers/s390/char/vmur.c +++ b/drivers/s390/char/vmur.c @@ -170,7 +170,7 @@ static void urdev_put(struct urdev *urd) */ static int ur_pm_suspend(struct ccw_device *cdev) { - struct urdev *urd = cdev->dev.driver_data; + struct urdev *urd = dev_get_drvdata(&cdev->dev); TRACE("ur_pm_suspend: cdev=%p\n", cdev); if (urd->open_flag) { @@ -1026,9 +1026,15 @@ static int __init ur_init(void) debug_set_level(vmur_dbf, 6); + vmur_class = class_create(THIS_MODULE, "vmur"); + if (IS_ERR(vmur_class)) { + rc = PTR_ERR(vmur_class); + goto fail_free_dbf; + } + rc = ccw_driver_register(&ur_driver); if (rc) - goto fail_free_dbf; + goto fail_class_destroy; rc = alloc_chrdev_region(&dev, 0, NUM_MINORS, "vmur"); if (rc) { @@ -1038,18 +1044,13 @@ static int __init ur_init(void) } ur_first_dev_maj_min = MKDEV(MAJOR(dev), 0); - vmur_class = class_create(THIS_MODULE, "vmur"); - if (IS_ERR(vmur_class)) { - rc = PTR_ERR(vmur_class); - goto fail_unregister_region; - } pr_info("%s loaded.\n", ur_banner); return 0; -fail_unregister_region: - unregister_chrdev_region(ur_first_dev_maj_min, NUM_MINORS); fail_unregister_driver: ccw_driver_unregister(&ur_driver); +fail_class_destroy: + class_destroy(vmur_class); fail_free_dbf: debug_unregister(vmur_dbf); return rc; @@ -1057,9 +1058,9 @@ fail_free_dbf: static void __exit ur_exit(void) { - class_destroy(vmur_class); unregister_chrdev_region(ur_first_dev_maj_min, NUM_MINORS); ccw_driver_unregister(&ur_driver); + class_destroy(vmur_class); debug_unregister(vmur_dbf); pr_info("%s unloaded.\n", ur_banner); } diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c index cb7854c10c0..f2bc287b69e 100644 --- a/drivers/s390/char/vmwatchdog.c +++ b/drivers/s390/char/vmwatchdog.c @@ -250,14 +250,14 @@ static int vmwdt_resume(void) static int vmwdt_suspend(void) { if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open)) { - pr_err("The watchdog is in use. " - "This prevents hibernation or suspend.\n"); + pr_err("The system cannot be suspended while the watchdog" + " is in use\n"); return NOTIFY_BAD; } if (test_bit(VMWDT_RUNNING, &vmwdt_is_open)) { clear_bit(VMWDT_OPEN, &vmwdt_is_open); - pr_err("The watchdog is running. " - "This prevents hibernation or suspend.\n"); + pr_err("The system cannot be suspended while the watchdog" + " is running\n"); return NOTIFY_BAD; } return NOTIFY_DONE; diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 1bbae433fbd..c431198bdbc 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -275,7 +275,7 @@ struct zcore_header { u32 num_pages; u32 pad1; u64 tod; - cpuid_t cpu_id; + struct cpuid cpu_id; u32 arch_id; u32 volnr; u32 build_arch; diff --git a/drivers/s390/cio/Makefile b/drivers/s390/cio/Makefile index adb3dd30152..fa4c9662f65 100644 --- a/drivers/s390/cio/Makefile +++ b/drivers/s390/cio/Makefile @@ -2,7 +2,7 @@ # Makefile for the S/390 common i/o drivers # -obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o scsw.o \ +obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o \ fcx.o itcw.o crw.o ccw_device-objs += device.o device_fsm.o device_ops.o ccw_device-objs += device_id.o device_pgid.o device_status.o diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 3e5f304ad88..40002830d48 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -417,7 +417,8 @@ int chp_new(struct chp_id chpid) if (ret) { CIO_MSG_EVENT(0, "Could not register chp%x.%02x: %d\n", chpid.cssid, chpid.id, ret); - goto out_free; + put_device(&chp->dev); + goto out; } ret = sysfs_create_group(&chp->dev.kobj, &chp_attr_group); if (ret) { diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index 425e8f89a6c..37aa611d4ac 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -37,29 +37,6 @@ struct channel_path_desc { struct channel_path; -struct css_general_char { - u64 : 12; - u32 dynio : 1; /* bit 12 */ - u32 : 28; - u32 aif : 1; /* bit 41 */ - u32 : 3; - u32 mcss : 1; /* bit 45 */ - u32 fcs : 1; /* bit 46 */ - u32 : 1; - u32 ext_mb : 1; /* bit 48 */ - u32 : 7; - u32 aif_tdd : 1; /* bit 56 */ - u32 : 1; - u32 qebsm : 1; /* bit 58 */ - u32 : 8; - u32 aif_osa : 1; /* bit 67 */ - u32 : 14; - u32 cib : 1; /* bit 82 */ - u32 : 5; - u32 fcx : 1; /* bit 88 */ - u32 : 7; -}__attribute__((packed)); - struct css_chsc_char { u64 res; u64 : 20; @@ -72,7 +49,6 @@ struct css_chsc_char { u32 : 19; }__attribute__((packed)); -extern struct css_general_char css_general_characteristics; extern struct css_chsc_char css_chsc_characteristics; struct chsc_ssd_info { diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 5ec7789bd9d..138124fcfca 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -139,12 +139,11 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ __u8 lpm, /* logical path mask */ __u8 key) /* storage key */ { - char dbf_txt[15]; int ccode; union orb *orb; - CIO_TRACE_EVENT(4, "stIO"); - CIO_TRACE_EVENT(4, dev_name(&sch->dev)); + CIO_TRACE_EVENT(5, "stIO"); + CIO_TRACE_EVENT(5, dev_name(&sch->dev)); orb = &to_io_private(sch)->orb; memset(orb, 0, sizeof(union orb)); @@ -169,8 +168,7 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ ccode = ssch(sch->schid, orb); /* process condition code */ - sprintf(dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT(4, dbf_txt); + CIO_HEX_EVENT(5, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -201,16 +199,14 @@ cio_start (struct subchannel *sch, struct ccw1 *cpa, __u8 lpm) int cio_resume (struct subchannel *sch) { - char dbf_txt[15]; int ccode; - CIO_TRACE_EVENT (4, "resIO"); + CIO_TRACE_EVENT(4, "resIO"); CIO_TRACE_EVENT(4, dev_name(&sch->dev)); ccode = rsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (4, dbf_txt); + CIO_HEX_EVENT(4, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -235,13 +231,12 @@ cio_resume (struct subchannel *sch) int cio_halt(struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "haltIO"); + CIO_TRACE_EVENT(2, "haltIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* @@ -249,8 +244,7 @@ cio_halt(struct subchannel *sch) */ ccode = hsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -270,13 +264,12 @@ cio_halt(struct subchannel *sch) int cio_clear(struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "clearIO"); + CIO_TRACE_EVENT(2, "clearIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* @@ -284,8 +277,7 @@ cio_clear(struct subchannel *sch) */ ccode = csch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -306,19 +298,17 @@ cio_clear(struct subchannel *sch) int cio_cancel (struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "cancelIO"); + CIO_TRACE_EVENT(2, "cancelIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); ccode = xsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: /* success */ @@ -429,11 +419,10 @@ EXPORT_SYMBOL_GPL(cio_update_schib); */ int cio_enable_subchannel(struct subchannel *sch, u32 intparm) { - char dbf_txt[15]; int retry; int ret; - CIO_TRACE_EVENT (2, "ensch"); + CIO_TRACE_EVENT(2, "ensch"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) @@ -460,8 +449,7 @@ int cio_enable_subchannel(struct subchannel *sch, u32 intparm) } else break; } - sprintf (dbf_txt, "ret:%d", ret); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ret, sizeof(ret)); return ret; } EXPORT_SYMBOL_GPL(cio_enable_subchannel); @@ -472,11 +460,10 @@ EXPORT_SYMBOL_GPL(cio_enable_subchannel); */ int cio_disable_subchannel(struct subchannel *sch) { - char dbf_txt[15]; int retry; int ret; - CIO_TRACE_EVENT (2, "dissch"); + CIO_TRACE_EVENT(2, "dissch"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) @@ -495,8 +482,7 @@ int cio_disable_subchannel(struct subchannel *sch) } else break; } - sprintf (dbf_txt, "ret:%d", ret); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ret, sizeof(ret)); return ret; } EXPORT_SYMBOL_GPL(cio_disable_subchannel); @@ -578,11 +564,6 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid) goto out; } mutex_init(&sch->reg_mutex); - /* Set a name for the subchannel */ - if (cio_is_console(schid)) - sch->dev.init_name = cio_get_console_sch_name(schid); - else - dev_set_name(&sch->dev, "0.%x.%04x", schid.ssid, schid.sch_no); /* * The first subchannel that is not-operational (ccode==3) @@ -686,7 +667,6 @@ void __irq_entry do_IRQ(struct pt_regs *regs) #ifdef CONFIG_CCW_CONSOLE static struct subchannel console_subchannel; -static char console_sch_name[10] = "0.x.xxxx"; static struct io_subchannel_private console_priv; static int console_subchannel_in_use; @@ -873,12 +853,6 @@ cio_get_console_subchannel(void) return &console_subchannel; } -const char *cio_get_console_sch_name(struct subchannel_id schid) -{ - snprintf(console_sch_name, 10, "0.%x.%04x", schid.ssid, schid.sch_no); - return (const char *)console_sch_name; -} - #endif static int __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 5150fba742a..2e43558c704 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -133,15 +133,11 @@ extern int cio_is_console(struct subchannel_id); extern struct subchannel *cio_get_console_subchannel(void); extern spinlock_t * cio_get_console_lock(void); extern void *cio_get_console_priv(void); -extern const char *cio_get_console_sch_name(struct subchannel_id schid); -extern const char *cio_get_console_cdev_name(struct subchannel *sch); #else #define cio_is_console(schid) 0 #define cio_get_console_subchannel() NULL #define cio_get_console_lock() NULL #define cio_get_console_priv() NULL -#define cio_get_console_sch_name(schid) NULL -#define cio_get_console_cdev_name(sch) NULL #endif #endif diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 85d43c6bcb6..e995123fd80 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -152,24 +152,15 @@ css_alloc_subchannel(struct subchannel_id schid) } static void -css_free_subchannel(struct subchannel *sch) -{ - if (sch) { - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); - kfree(sch->lock); - kfree(sch); - } -} - -static void css_subchannel_release(struct device *dev) { struct subchannel *sch; sch = to_subchannel(dev); if (!cio_is_console(sch->schid)) { + /* Reset intparm to zeroes. */ + sch->config.intparm = 0; + cio_commit_config(sch); kfree(sch->lock); kfree(sch); } @@ -180,6 +171,8 @@ static int css_sch_device_register(struct subchannel *sch) int ret; mutex_lock(&sch->reg_mutex); + dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid, + sch->schid.sch_no); ret = device_register(&sch->dev); mutex_unlock(&sch->reg_mutex); return ret; @@ -327,7 +320,7 @@ int css_probe_device(struct subchannel_id schid) return PTR_ERR(sch); ret = css_register_subchannel(sch); if (ret) - css_free_subchannel(sch); + put_device(&sch->dev); return ret; } @@ -644,7 +637,10 @@ __init_channel_subsystem(struct subchannel_id schid, void *data) * not working) so we do it now. This is true e.g. for the * console subchannel. */ - css_register_subchannel(sch); + if (css_register_subchannel(sch)) { + if (!cio_is_console(schid)) + put_device(&sch->dev); + } return 0; } @@ -661,8 +657,8 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high) css->global_pgid.pgid_high.cpu_addr = 0; #endif } - css->global_pgid.cpu_id = ((cpuid_t *) __LC_CPUID)->ident; - css->global_pgid.cpu_model = ((cpuid_t *) __LC_CPUID)->machine; + css->global_pgid.cpu_id = S390_lowcore.cpu_id.ident; + css->global_pgid.cpu_model = S390_lowcore.cpu_id.machine; css->global_pgid.tod_high = tod_high; } @@ -920,8 +916,10 @@ init_channel_subsystem (void) goto out_device; } ret = device_register(&css->pseudo_subchannel->dev); - if (ret) + if (ret) { + put_device(&css->pseudo_subchannel->dev); goto out_file; + } } ret = register_reboot_notifier(&css_reboot_notifier); if (ret) diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 3c57c1a18bb..0f95405c2c5 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -307,8 +307,11 @@ int ccw_device_is_orphan(struct ccw_device *cdev) static void ccw_device_unregister(struct ccw_device *cdev) { - if (test_and_clear_bit(1, &cdev->private->registered)) + if (test_and_clear_bit(1, &cdev->private->registered)) { device_del(&cdev->dev); + /* Release reference from device_initialize(). */ + put_device(&cdev->dev); + } } static void ccw_device_remove_orphan_cb(struct work_struct *work) @@ -319,7 +322,6 @@ static void ccw_device_remove_orphan_cb(struct work_struct *work) priv = container_of(work, struct ccw_device_private, kick_work); cdev = priv->cdev; ccw_device_unregister(cdev); - put_device(&cdev->dev); /* Release cdev reference for workqueue processing. */ put_device(&cdev->dev); } @@ -333,15 +335,15 @@ ccw_device_remove_disconnected(struct ccw_device *cdev) * Forced offline in disconnected state means * 'throw away device'. */ - /* Get cdev reference for workqueue processing. */ - if (!get_device(&cdev->dev)) - return; if (ccw_device_is_orphan(cdev)) { /* * Deregister ccw device. * Unfortunately, we cannot do this directly from the * attribute method. */ + /* Get cdev reference for workqueue processing. */ + if (!get_device(&cdev->dev)) + return; spin_lock_irqsave(cdev->ccwlock, flags); cdev->private->state = DEV_STATE_NOT_OPER; spin_unlock_irqrestore(cdev->ccwlock, flags); @@ -380,30 +382,34 @@ int ccw_device_set_offline(struct ccw_device *cdev) } cdev->online = 0; spin_lock_irq(cdev->ccwlock); - ret = ccw_device_offline(cdev); - if (ret == -ENODEV) { - if (cdev->private->state != DEV_STATE_NOT_OPER) { - cdev->private->state = DEV_STATE_OFFLINE; - dev_fsm_event(cdev, DEV_EVENT_NOTOPER); - } + /* Wait until a final state or DISCONNECTED is reached */ + while (!dev_fsm_final_state(cdev) && + cdev->private->state != DEV_STATE_DISCONNECTED) { spin_unlock_irq(cdev->ccwlock); - /* Give up reference from ccw_device_set_online(). */ - put_device(&cdev->dev); - return ret; + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + spin_lock_irq(cdev->ccwlock); } + ret = ccw_device_offline(cdev); + if (ret) + goto error; spin_unlock_irq(cdev->ccwlock); - if (ret == 0) { - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - /* Give up reference from ccw_device_set_online(). */ - put_device(&cdev->dev); - } else { - CIO_MSG_EVENT(0, "ccw_device_offline returned %d, " - "device 0.%x.%04x\n", - ret, cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); - cdev->online = 1; - } - return ret; + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + /* Give up reference from ccw_device_set_online(). */ + put_device(&cdev->dev); + return 0; + +error: + CIO_MSG_EVENT(0, "ccw_device_offline returned %d, device 0.%x.%04x\n", + ret, cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + cdev->private->state = DEV_STATE_OFFLINE; + dev_fsm_event(cdev, DEV_EVENT_NOTOPER); + spin_unlock_irq(cdev->ccwlock); + /* Give up reference from ccw_device_set_online(). */ + put_device(&cdev->dev); + return -ENODEV; } /** @@ -421,6 +427,7 @@ int ccw_device_set_offline(struct ccw_device *cdev) int ccw_device_set_online(struct ccw_device *cdev) { int ret; + int ret2; if (!cdev) return -ENODEV; @@ -444,28 +451,53 @@ int ccw_device_set_online(struct ccw_device *cdev) put_device(&cdev->dev); return ret; } - if (cdev->private->state != DEV_STATE_ONLINE) { + spin_lock_irq(cdev->ccwlock); + /* Check if online processing was successful */ + if ((cdev->private->state != DEV_STATE_ONLINE) && + (cdev->private->state != DEV_STATE_W4SENSE)) { + spin_unlock_irq(cdev->ccwlock); /* Give up online reference since onlining failed. */ put_device(&cdev->dev); return -ENODEV; } - if (!cdev->drv->set_online || cdev->drv->set_online(cdev) == 0) { - cdev->online = 1; - return 0; - } + spin_unlock_irq(cdev->ccwlock); + if (cdev->drv->set_online) + ret = cdev->drv->set_online(cdev); + if (ret) + goto rollback; + cdev->online = 1; + return 0; + +rollback: spin_lock_irq(cdev->ccwlock); - ret = ccw_device_offline(cdev); + /* Wait until a final state or DISCONNECTED is reached */ + while (!dev_fsm_final_state(cdev) && + cdev->private->state != DEV_STATE_DISCONNECTED) { + spin_unlock_irq(cdev->ccwlock); + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + spin_lock_irq(cdev->ccwlock); + } + ret2 = ccw_device_offline(cdev); + if (ret2) + goto error; + spin_unlock_irq(cdev->ccwlock); + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + /* Give up online reference since onlining failed. */ + put_device(&cdev->dev); + return ret; + +error: + CIO_MSG_EVENT(0, "rollback ccw_device_offline returned %d, " + "device 0.%x.%04x\n", + ret2, cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + cdev->private->state = DEV_STATE_OFFLINE; spin_unlock_irq(cdev->ccwlock); - if (ret == 0) - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - else - CIO_MSG_EVENT(0, "ccw_device_offline returned %d, " - "device 0.%x.%04x\n", - ret, cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); /* Give up online reference since onlining failed. */ put_device(&cdev->dev); - return (ret == 0) ? -ENODEV : ret; + return ret; } static int online_store_handle_offline(struct ccw_device *cdev) @@ -637,8 +669,12 @@ static int ccw_device_register(struct ccw_device *cdev) int ret; dev->bus = &ccw_bus_type; - - if ((ret = device_add(dev))) + ret = dev_set_name(&cdev->dev, "0.%x.%04x", cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + if (ret) + return ret; + ret = device_add(dev); + if (ret) return ret; set_bit(1, &cdev->private->registered); @@ -772,10 +808,8 @@ static struct ccw_device * io_subchannel_create_ccwdev(struct subchannel *sch) cdev = io_subchannel_allocate_dev(sch); if (!IS_ERR(cdev)) { ret = io_subchannel_initialize_dev(sch, cdev); - if (ret) { - kfree(cdev); + if (ret) cdev = ERR_PTR(ret); - } } return cdev; } @@ -1026,9 +1060,6 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) return; sch = to_subchannel(cdev->dev.parent); css_sch_device_unregister(sch); - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); /* Release cdev reference for workqueue processing.*/ put_device(&cdev->dev); /* Release subchannel reference for local processing. */ @@ -1037,6 +1068,9 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) void ccw_device_schedule_sch_unregister(struct ccw_device *cdev) { + /* Get cdev reference for workqueue processing. */ + if (!get_device(&cdev->dev)) + return; PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister); queue_work(slow_path_wq, &cdev->private->kick_work); @@ -1057,9 +1091,6 @@ io_subchannel_recog_done(struct ccw_device *cdev) /* Device did not respond in time. */ case DEV_STATE_NOT_OPER: cdev->private->flags.recog_done = 1; - /* Remove device found not operational. */ - if (!get_device(&cdev->dev)) - break; ccw_device_schedule_sch_unregister(cdev); if (atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); @@ -1097,13 +1128,6 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) init_waitqueue_head(&priv->wait_q); init_timer(&priv->timer); - /* Set an initial name for the device. */ - if (cio_is_console(sch->schid)) - cdev->dev.init_name = cio_get_console_cdev_name(sch); - else - dev_set_name(&cdev->dev, "0.%x.%04x", - sch->schid.ssid, sch->schib.pmcw.dev); - /* Increase counter of devices currently in recognition. */ atomic_inc(&ccw_device_init_count); @@ -1173,8 +1197,8 @@ static void io_subchannel_irq(struct subchannel *sch) cdev = sch_get_cdev(sch); - CIO_TRACE_EVENT(3, "IRQ"); - CIO_TRACE_EVENT(3, dev_name(&sch->dev)); + CIO_TRACE_EVENT(6, "IRQ"); + CIO_TRACE_EVENT(6, dev_name(&sch->dev)); if (cdev) dev_fsm_event(cdev, DEV_EVENT_INTERRUPT); } @@ -1212,9 +1236,6 @@ static void io_subchannel_do_unreg(struct work_struct *work) sch = container_of(work, struct subchannel, work); css_sch_device_unregister(sch); - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); put_device(&sch->dev); } @@ -1336,7 +1357,6 @@ io_subchannel_remove (struct subchannel *sch) cdev->private->state = DEV_STATE_NOT_OPER; spin_unlock_irqrestore(cdev->ccwlock, flags); ccw_device_unregister(cdev); - put_device(&cdev->dev); kfree(sch->private); sysfs_remove_group(&sch->dev.kobj, &io_subchannel_attr_group); return 0; @@ -1573,8 +1593,6 @@ static int purge_fn(struct device *dev, void *data) spin_unlock_irq(cdev->ccwlock); if (!unreg) goto out; - if (!get_device(&cdev->dev)) - goto out; CIO_MSG_EVENT(3, "ccw: purging 0.%x.%04x\n", priv->dev_id.ssid, priv->dev_id.devno); ccw_device_schedule_sch_unregister(cdev); @@ -1690,10 +1708,6 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow) spin_unlock_irqrestore(sch->lock, flags); css_sch_device_unregister(sch); spin_lock_irqsave(sch->lock, flags); - - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); break; case REPROBE: ccw_device_trigger_reprobe(cdev); @@ -1714,7 +1728,6 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow) #ifdef CONFIG_CCW_CONSOLE static struct ccw_device console_cdev; -static char console_cdev_name[10] = "0.x.xxxx"; static struct ccw_device_private console_private; static int console_cdev_in_use; @@ -1798,13 +1811,6 @@ int ccw_device_force_console(void) return ccw_device_pm_restore(&console_cdev.dev); } EXPORT_SYMBOL_GPL(ccw_device_force_console); - -const char *cio_get_console_cdev_name(struct subchannel *sch) -{ - snprintf(console_cdev_name, 10, "0.%x.%04x", - sch->schid.ssid, sch->schib.pmcw.dev); - return (const char *)console_cdev_name; -} #endif /* @@ -2022,7 +2028,9 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev) spin_unlock_irq(sch->lock); if (ret) { CIO_MSG_EVENT(0, "Couldn't start recognition for device " - "%s (ret=%d)\n", dev_name(&cdev->dev), ret); + "0.%x.%04x (ret=%d)\n", + cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, ret); spin_lock_irq(sch->lock); cdev->private->state = DEV_STATE_DISCONNECTED; spin_unlock_irq(sch->lock); @@ -2085,8 +2093,9 @@ static int ccw_device_pm_restore(struct device *dev) } /* check if the device id has changed */ if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - CIO_MSG_EVENT(0, "resume: sch %s: failed (devno changed from " - "%04x to %04x)\n", dev_name(&sch->dev), + CIO_MSG_EVENT(0, "resume: sch 0.%x.%04x: failed (devno " + "changed from %04x to %04x)\n", + sch->schid.ssid, sch->schid.sch_no, cdev->private->dev_id.devno, sch->schib.pmcw.dev); goto out_unreg_unlock; @@ -2119,8 +2128,9 @@ static int ccw_device_pm_restore(struct device *dev) if (cm_enabled) { ret = ccw_set_cmf(cdev, 1); if (ret) { - CIO_MSG_EVENT(2, "resume: cdev %s: cmf failed " - "(rc=%d)\n", dev_name(&cdev->dev), ret); + CIO_MSG_EVENT(2, "resume: cdev 0.%x.%04x: cmf failed " + "(rc=%d)\n", cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, ret); ret = 0; } } diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 3db88c52d28..e728ce447f6 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -394,6 +394,13 @@ ccw_device_done(struct ccw_device *cdev, int state) ccw_device_schedule_sch_unregister(cdev); cdev->private->flags.donotify = 0; } + if (state == DEV_STATE_NOT_OPER) { + CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", + cdev->private->dev_id.devno, sch->schid.sch_no); + if (!ccw_device_notify(cdev, CIO_GONE)) + ccw_device_schedule_sch_unregister(cdev); + cdev->private->flags.donotify = 0; + } if (cdev->private->flags.donotify) { cdev->private->flags.donotify = 0; @@ -731,6 +738,17 @@ static void ccw_device_generic_notoper(struct ccw_device *cdev, } /* + * Handle path verification event in offline state. + */ +static void ccw_device_offline_verify(struct ccw_device *cdev, + enum dev_event dev_event) +{ + struct subchannel *sch = to_subchannel(cdev->dev.parent); + + css_schedule_eval(sch->schid); +} + +/* * Handle path verification event. */ static void @@ -887,6 +905,8 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event) } call_handler: cdev->private->state = DEV_STATE_ONLINE; + /* In case sensing interfered with setting the device online */ + wake_up(&cdev->private->wait_q); /* Call the handler. */ if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify) /* Start delayed path verification. */ @@ -1149,7 +1169,7 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = { [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, [DEV_EVENT_INTERRUPT] = ccw_device_offline_irq, [DEV_EVENT_TIMEOUT] = ccw_device_nop, - [DEV_EVENT_VERIFY] = ccw_device_nop, + [DEV_EVENT_VERIFY] = ccw_device_offline_verify, }, [DEV_STATE_VERIFY] = { [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 13bcb811438..ff7748a9199 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -1,7 +1,7 @@ /* * linux/drivers/s390/cio/qdio.h * - * Copyright 2000,2008 IBM Corp. + * Copyright 2000,2009 IBM Corp. * Author(s): Utz Bacher <utz.bacher@de.ibm.com> * Jan Glauber <jang@linux.vnet.ibm.com> */ @@ -246,6 +246,7 @@ struct qdio_q { atomic_t nr_buf_used; struct qdio_irq *irq_ptr; + struct dentry *debugfs_q; struct tasklet_struct tasklet; /* error condition during a data transfer */ @@ -267,6 +268,7 @@ struct qdio_irq { struct qib qib; u32 *dsci; /* address of device state change indicator */ struct ccw_device *cdev; + struct dentry *debugfs_dev; unsigned long int_parm; struct subchannel_id schid; @@ -351,15 +353,6 @@ static inline unsigned long long get_usecs(void) ((bufnr - dec) & 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, - int auto_ack); -void qdio_check_outbound_after_thinint(struct qdio_q *q); -int qdio_inbound_q_moved(struct qdio_q *q); -void qdio_kick_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); @@ -392,4 +385,6 @@ void qdio_setup_destroy_sysfs(struct ccw_device *cdev); int qdio_setup_init(void); void qdio_setup_exit(void); +int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr, + unsigned char *state); #endif /* _CIO_QDIO_H */ diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index e3434b34f86..1b78f639ead 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -1,14 +1,12 @@ /* * drivers/s390/cio/qdio_debug.c * - * Copyright IBM Corp. 2008 + * Copyright IBM Corp. 2008,2009 * * Author: Jan Glauber (jang@linux.vnet.ibm.com) */ -#include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/debugfs.h> -#include <asm/qdio.h> #include <asm/debug.h> #include "qdio_debug.h" #include "qdio.h" @@ -17,10 +15,7 @@ debug_info_t *qdio_dbf_setup; debug_info_t *qdio_dbf_error; static struct dentry *debugfs_root; -#define MAX_DEBUGFS_QUEUES 32 -static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL }; -static DEFINE_MUTEX(debugfs_mutex); -#define QDIO_DEBUGFS_NAME_LEN 40 +#define QDIO_DEBUGFS_NAME_LEN 10 void qdio_allocate_dbf(struct qdio_initialize *init_data, struct qdio_irq *irq_ptr) @@ -70,9 +65,8 @@ static int qstat_show(struct seq_file *m, void *v) seq_printf(m, "slsb buffer states:\n"); seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n"); - qdio_siga_sync_q(q); for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { - get_buf_state(q, i, &state, 0); + debug_get_buf_state(q, i, &state); switch (state) { case SLSB_P_INPUT_NOT_INIT: case SLSB_P_OUTPUT_NOT_INIT: @@ -131,20 +125,6 @@ static int qstat_seq_open(struct inode *inode, struct file *filp) filp->f_path.dentry->d_inode->i_private); } -static void remove_debugfs_entry(struct qdio_q *q) -{ - int i; - - for (i = 0; i < MAX_DEBUGFS_QUEUES; i++) { - if (!debugfs_queues[i]) - continue; - if (debugfs_queues[i]->d_inode->i_private == q) { - debugfs_remove(debugfs_queues[i]); - debugfs_queues[i] = NULL; - } - } -} - static struct file_operations debugfs_fops = { .owner = THIS_MODULE, .open = qstat_seq_open, @@ -156,22 +136,15 @@ static struct file_operations debugfs_fops = { static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev) { - int i = 0; char name[QDIO_DEBUGFS_NAME_LEN]; - while (debugfs_queues[i] != NULL) { - i++; - if (i >= MAX_DEBUGFS_QUEUES) - return; - } - snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%s_%d", - dev_name(&cdev->dev), + snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d", q->is_input_q ? "input" : "output", q->nr); - debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR, - debugfs_root, q, &debugfs_fops); - if (IS_ERR(debugfs_queues[i])) - debugfs_queues[i] = NULL; + q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR, + q->irq_ptr->debugfs_dev, q, &debugfs_fops); + if (IS_ERR(q->debugfs_q)) + q->debugfs_q = NULL; } void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) @@ -179,12 +152,14 @@ void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) struct qdio_q *q; int i; - mutex_lock(&debugfs_mutex); + irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev), + debugfs_root); + if (IS_ERR(irq_ptr->debugfs_dev)) + irq_ptr->debugfs_dev = NULL; for_each_input_queue(irq_ptr, q, i) setup_debugfs_entry(q, cdev); for_each_output_queue(irq_ptr, q, i) setup_debugfs_entry(q, cdev); - mutex_unlock(&debugfs_mutex); } void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) @@ -192,17 +167,16 @@ void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cd struct qdio_q *q; int i; - mutex_lock(&debugfs_mutex); for_each_input_queue(irq_ptr, q, i) - remove_debugfs_entry(q); + debugfs_remove(q->debugfs_q); for_each_output_queue(irq_ptr, q, i) - remove_debugfs_entry(q); - mutex_unlock(&debugfs_mutex); + debugfs_remove(q->debugfs_q); + debugfs_remove(irq_ptr->debugfs_dev); } int __init qdio_debug_init(void) { - debugfs_root = debugfs_create_dir("qdio_queues", NULL); + debugfs_root = debugfs_create_dir("qdio", NULL); qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16); debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index d79cf5bf0e6..9aef402a5f1 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -231,8 +231,8 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr, return i; } -inline int get_buf_state(struct qdio_q *q, unsigned int bufnr, - unsigned char *state, int auto_ack) +static inline int get_buf_state(struct qdio_q *q, unsigned int bufnr, + unsigned char *state, int auto_ack) { return get_buf_states(q, bufnr, state, 1, auto_ack); } @@ -276,7 +276,7 @@ void qdio_init_buf_states(struct qdio_irq *irq_ptr) QDIO_MAX_BUFFERS_PER_Q); } -static int qdio_siga_sync(struct qdio_q *q, unsigned int output, +static inline int qdio_siga_sync(struct qdio_q *q, unsigned int output, unsigned int input) { int cc; @@ -293,7 +293,7 @@ static int qdio_siga_sync(struct qdio_q *q, unsigned int output, return cc; } -inline int qdio_siga_sync_q(struct qdio_q *q) +static inline int qdio_siga_sync_q(struct qdio_q *q) { if (q->is_input_q) return qdio_siga_sync(q, 0, q->mask); @@ -358,8 +358,7 @@ static inline int qdio_siga_input(struct qdio_q *q) return cc; } -/* called from thinint inbound handler */ -void qdio_sync_after_thinint(struct qdio_q *q) +static inline void qdio_sync_after_thinint(struct qdio_q *q) { if (pci_out_supported(q)) { if (need_siga_sync_thinint(q)) @@ -370,7 +369,14 @@ void qdio_sync_after_thinint(struct qdio_q *q) qdio_siga_sync_q(q); } -inline void qdio_stop_polling(struct qdio_q *q) +int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr, + unsigned char *state) +{ + qdio_siga_sync_q(q); + return get_buf_states(q, bufnr, state, 1, 0); +} + +static inline void qdio_stop_polling(struct qdio_q *q) { if (!q->u.in.polling) return; @@ -449,13 +455,6 @@ static inline void inbound_primed(struct qdio_q *q, int count) count--; if (!count) return; - - /* - * Need to change all PRIMED buffers to NOT_INIT, otherwise - * we're loosing initiative in the thinint code. - */ - set_buf_states(q, q->first_to_check, SLSB_P_INPUT_NOT_INIT, - count); } static int get_inbound_buffer_frontier(struct qdio_q *q) @@ -470,19 +469,13 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK); stop = add_buf(q->first_to_check, count); - /* - * No siga sync here, as a PCI or we after a thin interrupt - * will sync the queues. - */ - - /* need to set count to 1 for non-qebsm */ - if (!is_qebsm(q)) - count = 1; - -check_next: if (q->first_to_check == stop) goto out; + /* + * No siga sync here, as a PCI or we after a thin interrupt + * already sync'ed the queues. + */ count = get_buf_states(q, q->first_to_check, &state, count, 1); if (!count) goto out; @@ -490,14 +483,9 @@ check_next: switch (state) { case SLSB_P_INPUT_PRIMED: inbound_primed(q, count); - /* - * No siga-sync needed for non-qebsm here, as the inbound queue - * will be synced on the next siga-r, resp. - * tiqdio_is_inbound_q_done will do the siga-sync. - */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); - goto check_next; + break; case SLSB_P_INPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ @@ -516,7 +504,7 @@ out: return q->first_to_check; } -int qdio_inbound_q_moved(struct qdio_q *q) +static int qdio_inbound_q_moved(struct qdio_q *q) { int bufnr; @@ -524,35 +512,32 @@ int qdio_inbound_q_moved(struct qdio_q *q) if ((bufnr != q->last_move) || q->qdio_error) { q->last_move = bufnr; - if (!need_siga_sync(q) && !pci_out_supported(q)) + if (!is_thinint_irq(q->irq_ptr) && !MACHINE_IS_VM) q->u.in.timestamp = get_usecs(); - - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in moved"); return 1; } else return 0; } -static int qdio_inbound_q_done(struct qdio_q *q) +static inline int qdio_inbound_q_done(struct qdio_q *q) { unsigned char state = 0; if (!atomic_read(&q->nr_buf_used)) return 1; - /* - * We need that one for synchronization with the adapter, as it - * does a kind of PCI avoidance. - */ qdio_siga_sync_q(q); - get_buf_state(q, q->first_to_check, &state, 0); + if (state == SLSB_P_INPUT_PRIMED) - /* we got something to do */ + /* more work coming */ return 0; - /* on VM, we don't poll, so the q is always done here */ - if (need_siga_sync(q) || pci_out_supported(q)) + if (is_thinint_irq(q->irq_ptr)) + return 1; + + /* don't poll under z/VM */ + if (MACHINE_IS_VM) return 1; /* @@ -563,14 +548,11 @@ static int qdio_inbound_q_done(struct qdio_q *q) DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%3d", q->first_to_check); return 1; - } else { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in notd:%3d", - q->first_to_check); + } else return 0; - } } -void qdio_kick_handler(struct qdio_q *q) +static void qdio_kick_handler(struct qdio_q *q) { int start = q->first_to_kick; int end = q->first_to_check; @@ -619,7 +601,6 @@ again: goto again; } -/* inbound tasklet */ void qdio_inbound_processing(unsigned long data) { struct qdio_q *q = (struct qdio_q *)data; @@ -642,11 +623,6 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) count = min(atomic_read(&q->nr_buf_used), QDIO_MAX_BUFFERS_MASK); stop = add_buf(q->first_to_check, count); - /* need to set count to 1 for non-qebsm */ - if (!is_qebsm(q)) - count = 1; - -check_next: if (q->first_to_check == stop) return q->first_to_check; @@ -661,13 +637,7 @@ check_next: atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); - /* - * We fetch all buffer states at once. get_buf_states may - * return count < stop. For QEBSM we do not loop. - */ - if (is_qebsm(q)) - break; - goto check_next; + break; case SLSB_P_OUTPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ @@ -797,8 +767,7 @@ void qdio_outbound_timer(unsigned long data) tasklet_schedule(&q->tasklet); } -/* called from thinint inbound tasklet */ -void qdio_check_outbound_after_thinint(struct qdio_q *q) +static inline void qdio_check_outbound_after_thinint(struct qdio_q *q) { struct qdio_q *out; int i; @@ -811,6 +780,48 @@ void qdio_check_outbound_after_thinint(struct qdio_q *q) tasklet_schedule(&out->tasklet); } +static void __tiqdio_inbound_processing(struct qdio_q *q) +{ + qdio_perf_stat_inc(&perf_stats.thinint_inbound); + qdio_sync_after_thinint(q); + + /* + * The interrupt could be caused by a PCI request. Check the + * PCI capable outbound queues. + */ + qdio_check_outbound_after_thinint(q); + + if (!qdio_inbound_q_moved(q)) + return; + + qdio_kick_handler(q); + + if (!qdio_inbound_q_done(q)) { + qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop); + if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) { + tasklet_schedule(&q->tasklet); + return; + } + } + + qdio_stop_polling(q); + /* + * We need to check again to not lose initiative after + * resetting the ACK state. + */ + if (!qdio_inbound_q_done(q)) { + qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2); + if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) + tasklet_schedule(&q->tasklet); + } +} + +void tiqdio_inbound_processing(unsigned long data) +{ + struct qdio_q *q = (struct qdio_q *)data; + __tiqdio_inbound_processing(q); +} + static inline void qdio_set_state(struct qdio_irq *irq_ptr, enum qdio_irq_states state) { @@ -1488,18 +1499,13 @@ out: * @count: how many buffers to process */ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, - int q_nr, int bufnr, int count) + int q_nr, unsigned int bufnr, unsigned int count) { struct qdio_irq *irq_ptr; - if ((bufnr > QDIO_MAX_BUFFERS_PER_Q) || - (count > QDIO_MAX_BUFFERS_PER_Q) || - (q_nr >= QDIO_MAX_QUEUES_PER_IRQ)) + if (bufnr >= QDIO_MAX_BUFFERS_PER_Q || count > QDIO_MAX_BUFFERS_PER_Q) return -EINVAL; - if (!count) - return 0; - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index c655d011a78..981a77ea7ee 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -43,9 +43,6 @@ struct indicator_t { }; static struct indicator_t *q_indicators; -static void tiqdio_tasklet_fn(unsigned long data); -static DECLARE_TASKLET(tiqdio_tasklet, tiqdio_tasklet_fn, 0); - static int css_qdio_omit_svs; static inline unsigned long do_clear_global_summary(void) @@ -103,11 +100,6 @@ void tiqdio_add_input_queues(struct qdio_irq *irq_ptr) xchg(irq_ptr->dsci, 1); } -/* - * we cannot stop the tiqdio tasklet here since it is for all - * thinint qdio devices and it must run as long as there is a - * thinint device left - */ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) { struct qdio_q *q; @@ -126,79 +118,39 @@ void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr) } } -static inline int tiqdio_inbound_q_done(struct qdio_q *q) -{ - unsigned char state = 0; - - if (!atomic_read(&q->nr_buf_used)) - return 1; - - qdio_siga_sync_q(q); - get_buf_state(q, q->first_to_check, &state, 0); - - if (state == SLSB_P_INPUT_PRIMED) - /* more work coming */ - return 0; - return 1; -} - static inline int shared_ind(struct qdio_irq *irq_ptr) { return irq_ptr->dsci == &q_indicators[TIQDIO_SHARED_IND].ind; } -static void __tiqdio_inbound_processing(struct qdio_q *q) +/** + * tiqdio_thinint_handler - thin interrupt handler for qdio + * @ind: pointer to adapter local summary indicator + * @drv_data: NULL + */ +static void tiqdio_thinint_handler(void *ind, void *drv_data) { - qdio_perf_stat_inc(&perf_stats.thinint_inbound); - qdio_sync_after_thinint(q); + struct qdio_q *q; + + qdio_perf_stat_inc(&perf_stats.thin_int); /* - * Maybe we have work on our outbound queues... at least - * we have to check the PCI capable queues. + * SVS only when needed: issue SVS to benefit from iqdio interrupt + * avoidance (SVS clears adapter interrupt suppression overwrite) */ - qdio_check_outbound_after_thinint(q); - - if (!qdio_inbound_q_moved(q)) - return; - - qdio_kick_handler(q); - - if (!tiqdio_inbound_q_done(q)) { - qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop); - if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) - tasklet_schedule(&q->tasklet); - } + if (!css_qdio_omit_svs) + do_clear_global_summary(); - qdio_stop_polling(q); /* - * We need to check again to not lose initiative after - * resetting the ACK state. + * reset local summary indicator (tiqdio_alsi) to stop adapter + * interrupts for now */ - if (!tiqdio_inbound_q_done(q)) { - qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop2); - if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) - tasklet_schedule(&q->tasklet); - } -} - -void tiqdio_inbound_processing(unsigned long data) -{ - struct qdio_q *q = (struct qdio_q *)data; - - __tiqdio_inbound_processing(q); -} - -/* check for work on all inbound thinint queues */ -static void tiqdio_tasklet_fn(unsigned long data) -{ - struct qdio_q *q; - - qdio_perf_stat_inc(&perf_stats.tasklet_thinint); -again: + xchg((u8 *)ind, 0); /* protect tiq_list entries, only changed in activate or shutdown */ rcu_read_lock(); + /* check for work on all inbound thinint queues */ list_for_each_entry_rcu(q, &tiq_list, entry) /* only process queues from changed sets */ if (*q->irq_ptr->dsci) { @@ -226,37 +178,6 @@ again: if (*tiqdio_alsi) xchg(&q_indicators[TIQDIO_SHARED_IND].ind, 1); } - - /* check for more work */ - if (*tiqdio_alsi) { - xchg(tiqdio_alsi, 0); - qdio_perf_stat_inc(&perf_stats.tasklet_thinint_loop); - goto again; - } -} - -/** - * tiqdio_thinint_handler - thin interrupt handler for qdio - * @ind: pointer to adapter local summary indicator - * @drv_data: NULL - */ -static void tiqdio_thinint_handler(void *ind, void *drv_data) -{ - qdio_perf_stat_inc(&perf_stats.thin_int); - - /* - * SVS only when needed: issue SVS to benefit from iqdio interrupt - * avoidance (SVS clears adapter interrupt suppression overwrite) - */ - if (!css_qdio_omit_svs) - do_clear_global_summary(); - - /* - * reset local summary indicator (tiqdio_alsi) to stop adapter - * interrupts for now, the tasklet will clean all dsci's - */ - xchg((u8 *)ind, 0); - tasklet_hi_schedule(&tiqdio_tasklet); } static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) @@ -376,5 +297,4 @@ void __exit tiqdio_unregister_thinints(void) s390_unregister_adapter_interrupt(tiqdio_alsi, QDIO_AIRQ_ISC); isc_unregister(QDIO_AIRQ_ISC); } - tasklet_kill(&tiqdio_tasklet); } diff --git a/drivers/s390/cio/scsw.c b/drivers/s390/cio/scsw.c deleted file mode 100644 index f8da25ab576..00000000000 --- a/drivers/s390/cio/scsw.c +++ /dev/null @@ -1,843 +0,0 @@ -/* - * Helper functions for scsw access. - * - * Copyright IBM Corp. 2008 - * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> - */ - -#include <linux/types.h> -#include <linux/module.h> -#include <asm/cio.h> -#include "css.h" -#include "chsc.h" - -/** - * scsw_is_tm - check for transport mode scsw - * @scsw: pointer to scsw - * - * Return non-zero if the specified scsw is a transport mode scsw, zero - * otherwise. - */ -int scsw_is_tm(union scsw *scsw) -{ - return css_general_characteristics.fcx && (scsw->tm.x == 1); -} -EXPORT_SYMBOL(scsw_is_tm); - -/** - * scsw_key - return scsw key field - * @scsw: pointer to scsw - * - * Return the value of the key field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_key(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.key; - else - return scsw->cmd.key; -} -EXPORT_SYMBOL(scsw_key); - -/** - * scsw_eswf - return scsw eswf field - * @scsw: pointer to scsw - * - * Return the value of the eswf field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_eswf(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.eswf; - else - return scsw->cmd.eswf; -} -EXPORT_SYMBOL(scsw_eswf); - -/** - * scsw_cc - return scsw cc field - * @scsw: pointer to scsw - * - * Return the value of the cc field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_cc(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.cc; - else - return scsw->cmd.cc; -} -EXPORT_SYMBOL(scsw_cc); - -/** - * scsw_ectl - return scsw ectl field - * @scsw: pointer to scsw - * - * Return the value of the ectl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_ectl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.ectl; - else - return scsw->cmd.ectl; -} -EXPORT_SYMBOL(scsw_ectl); - -/** - * scsw_pno - return scsw pno field - * @scsw: pointer to scsw - * - * Return the value of the pno field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_pno(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.pno; - else - return scsw->cmd.pno; -} -EXPORT_SYMBOL(scsw_pno); - -/** - * scsw_fctl - return scsw fctl field - * @scsw: pointer to scsw - * - * Return the value of the fctl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_fctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.fctl; - else - return scsw->cmd.fctl; -} -EXPORT_SYMBOL(scsw_fctl); - -/** - * scsw_actl - return scsw actl field - * @scsw: pointer to scsw - * - * Return the value of the actl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_actl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.actl; - else - return scsw->cmd.actl; -} -EXPORT_SYMBOL(scsw_actl); - -/** - * scsw_stctl - return scsw stctl field - * @scsw: pointer to scsw - * - * Return the value of the stctl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_stctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.stctl; - else - return scsw->cmd.stctl; -} -EXPORT_SYMBOL(scsw_stctl); - -/** - * scsw_dstat - return scsw dstat field - * @scsw: pointer to scsw - * - * Return the value of the dstat field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_dstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.dstat; - else - return scsw->cmd.dstat; -} -EXPORT_SYMBOL(scsw_dstat); - -/** - * scsw_cstat - return scsw cstat field - * @scsw: pointer to scsw - * - * Return the value of the cstat field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_cstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.cstat; - else - return scsw->cmd.cstat; -} -EXPORT_SYMBOL(scsw_cstat); - -/** - * scsw_cmd_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_key(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_key); - -/** - * scsw_cmd_is_valid_sctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_sctl(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_sctl); - -/** - * scsw_cmd_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_eswf(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_eswf); - -/** - * scsw_cmd_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_cc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && - (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_cc); - -/** - * scsw_cmd_is_valid_fmt - check fmt field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fmt field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_fmt(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_fmt); - -/** - * scsw_cmd_is_valid_pfch - check pfch field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pfch field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_pfch(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_pfch); - -/** - * scsw_cmd_is_valid_isic - check isic field validity - * @scsw: pointer to scsw - * - * Return non-zero if the isic field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_isic(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_isic); - -/** - * scsw_cmd_is_valid_alcc - check alcc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the alcc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_alcc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_alcc); - -/** - * scsw_cmd_is_valid_ssi - check ssi field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ssi field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_ssi(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_ssi); - -/** - * scsw_cmd_is_valid_zcc - check zcc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the zcc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_zcc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && - (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_zcc); - -/** - * scsw_cmd_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_ectl(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_ectl); - -/** - * scsw_cmd_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_pno(union scsw *scsw) -{ - return (scsw->cmd.fctl != 0) && - (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) || - ((scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->cmd.actl & SCSW_ACTL_SUSPENDED))); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_pno); - -/** - * scsw_cmd_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_fctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_fctl); - -/** - * scsw_cmd_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_actl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_actl); - -/** - * scsw_cmd_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_stctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_stctl); - -/** - * scsw_cmd_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_dstat(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->cmd.cc != 3); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_dstat); - -/** - * scsw_cmd_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_cstat(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->cmd.cc != 3); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_cstat); - -/** - * scsw_tm_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_key(union scsw *scsw) -{ - return (scsw->tm.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_tm_is_valid_key); - -/** - * scsw_tm_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_eswf(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_tm_is_valid_eswf); - -/** - * scsw_tm_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_cc(union scsw *scsw) -{ - return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) && - (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_tm_is_valid_cc); - -/** - * scsw_tm_is_valid_fmt - check fmt field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fmt field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fmt(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fmt); - -/** - * scsw_tm_is_valid_x - check x field validity - * @scsw: pointer to scsw - * - * Return non-zero if the x field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_x(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_x); - -/** - * scsw_tm_is_valid_q - check q field validity - * @scsw: pointer to scsw - * - * Return non-zero if the q field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_q(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_q); - -/** - * scsw_tm_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_ectl(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS); -} -EXPORT_SYMBOL(scsw_tm_is_valid_ectl); - -/** - * scsw_tm_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_pno(union scsw *scsw) -{ - return (scsw->tm.fctl != 0) && - (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) || - ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->tm.actl & SCSW_ACTL_SUSPENDED))); -} -EXPORT_SYMBOL(scsw_tm_is_valid_pno); - -/** - * scsw_tm_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fctl); - -/** - * scsw_tm_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_actl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_actl); - -/** - * scsw_tm_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_stctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_stctl); - -/** - * scsw_tm_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_dstat(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->tm.cc != 3); -} -EXPORT_SYMBOL(scsw_tm_is_valid_dstat); - -/** - * scsw_tm_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_cstat(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->tm.cc != 3); -} -EXPORT_SYMBOL(scsw_tm_is_valid_cstat); - -/** - * scsw_tm_is_valid_fcxs - check fcxs field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fcxs field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fcxs(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fcxs); - -/** - * scsw_tm_is_valid_schxs - check schxs field validity - * @scsw: pointer to scsw - * - * Return non-zero if the schxs field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_schxs(union scsw *scsw) -{ - return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK | - SCHN_STAT_INTF_CTRL_CHK | - SCHN_STAT_PROT_CHECK | - SCHN_STAT_CHN_DATA_CHK)); -} -EXPORT_SYMBOL(scsw_tm_is_valid_schxs); - -/** - * scsw_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_actl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_actl(scsw); - else - return scsw_cmd_is_valid_actl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_actl); - -/** - * scsw_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_cc(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_cc(scsw); - else - return scsw_cmd_is_valid_cc(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_cc); - -/** - * scsw_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_cstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_cstat(scsw); - else - return scsw_cmd_is_valid_cstat(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_cstat); - -/** - * scsw_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_dstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_dstat(scsw); - else - return scsw_cmd_is_valid_dstat(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_dstat); - -/** - * scsw_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_ectl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_ectl(scsw); - else - return scsw_cmd_is_valid_ectl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_ectl); - -/** - * scsw_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_eswf(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_eswf(scsw); - else - return scsw_cmd_is_valid_eswf(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_eswf); - -/** - * scsw_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_fctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_fctl(scsw); - else - return scsw_cmd_is_valid_fctl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_fctl); - -/** - * scsw_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_key(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_key(scsw); - else - return scsw_cmd_is_valid_key(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_key); - -/** - * scsw_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_pno(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_pno(scsw); - else - return scsw_cmd_is_valid_pno(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_pno); - -/** - * scsw_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_stctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_stctl(scsw); - else - return scsw_cmd_is_valid_stctl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_stctl); - -/** - * scsw_cmd_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the command mode scsw indicates that the associated - * status condition is solicited, zero if it is unsolicited. - */ -int scsw_cmd_is_solicited(union scsw *scsw) -{ - return (scsw->cmd.cc != 0) || (scsw->cmd.stctl != - (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); -} -EXPORT_SYMBOL(scsw_cmd_is_solicited); - -/** - * scsw_tm_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the transport mode scsw indicates that the associated - * status condition is solicited, zero if it is unsolicited. - */ -int scsw_tm_is_solicited(union scsw *scsw) -{ - return (scsw->tm.cc != 0) || (scsw->tm.stctl != - (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); -} -EXPORT_SYMBOL(scsw_tm_is_solicited); - -/** - * scsw_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the transport or command mode scsw indicates that the - * associated status condition is solicited, zero if it is unsolicited. - */ -int scsw_is_solicited(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_solicited(scsw); - else - return scsw_cmd_is_solicited(scsw); -} -EXPORT_SYMBOL(scsw_is_solicited); diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 9c148406b98..090b32a339c 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -54,6 +54,12 @@ static int ap_poll_thread_start(void); static void ap_poll_thread_stop(void); static void ap_request_timeout(unsigned long); static inline void ap_schedule_poll_timer(void); +static int __ap_poll_device(struct ap_device *ap_dev, unsigned long *flags); +static int ap_device_remove(struct device *dev); +static int ap_device_probe(struct device *dev); +static void ap_interrupt_handler(void *unused1, void *unused2); +static void ap_reset(struct ap_device *ap_dev); +static void ap_config_timeout(unsigned long ptr); /* * Module description. @@ -101,6 +107,10 @@ static struct hrtimer ap_poll_timer; * If z/VM change to 1500000 nanoseconds to adjust to z/VM polling.*/ static unsigned long long poll_timeout = 250000; +/* Suspend flag */ +static int ap_suspend_flag; +static struct bus_type ap_bus_type; + /** * ap_using_interrupts() - Returns non-zero if interrupt support is * available. @@ -617,10 +627,81 @@ static int ap_uevent (struct device *dev, struct kobj_uevent_env *env) return retval; } +static int ap_bus_suspend(struct device *dev, pm_message_t state) +{ + struct ap_device *ap_dev = to_ap_dev(dev); + unsigned long flags; + + if (!ap_suspend_flag) { + ap_suspend_flag = 1; + + /* Disable scanning for devices, thus we do not want to scan + * for them after removing. + */ + del_timer_sync(&ap_config_timer); + if (ap_work_queue != NULL) { + destroy_workqueue(ap_work_queue); + ap_work_queue = NULL; + } + tasklet_disable(&ap_tasklet); + } + /* Poll on the device until all requests are finished. */ + do { + flags = 0; + spin_lock_bh(&ap_dev->lock); + __ap_poll_device(ap_dev, &flags); + spin_unlock_bh(&ap_dev->lock); + } while ((flags & 1) || (flags & 2)); + + ap_device_remove(dev); + return 0; +} + +static int ap_bus_resume(struct device *dev) +{ + int rc = 0; + struct ap_device *ap_dev = to_ap_dev(dev); + + if (ap_suspend_flag) { + ap_suspend_flag = 0; + if (!ap_interrupts_available()) + ap_interrupt_indicator = NULL; + ap_device_probe(dev); + ap_reset(ap_dev); + setup_timer(&ap_dev->timeout, ap_request_timeout, + (unsigned long) ap_dev); + ap_scan_bus(NULL); + init_timer(&ap_config_timer); + ap_config_timer.function = ap_config_timeout; + ap_config_timer.data = 0; + ap_config_timer.expires = jiffies + ap_config_time * HZ; + add_timer(&ap_config_timer); + ap_work_queue = create_singlethread_workqueue("kapwork"); + if (!ap_work_queue) + return -ENOMEM; + tasklet_enable(&ap_tasklet); + if (!ap_using_interrupts()) + ap_schedule_poll_timer(); + else + tasklet_schedule(&ap_tasklet); + if (ap_thread_flag) + rc = ap_poll_thread_start(); + } else { + ap_device_probe(dev); + ap_reset(ap_dev); + setup_timer(&ap_dev->timeout, ap_request_timeout, + (unsigned long) ap_dev); + } + + return rc; +} + static struct bus_type ap_bus_type = { .name = "ap", .match = &ap_bus_match, .uevent = &ap_uevent, + .suspend = ap_bus_suspend, + .resume = ap_bus_resume }; static int ap_device_probe(struct device *dev) @@ -1030,12 +1111,15 @@ static void ap_scan_bus(struct work_struct *unused) ap_dev->device.bus = &ap_bus_type; ap_dev->device.parent = ap_root_device; - dev_set_name(&ap_dev->device, "card%02x", - AP_QID_DEVICE(ap_dev->qid)); + if (dev_set_name(&ap_dev->device, "card%02x", + AP_QID_DEVICE(ap_dev->qid))) { + kfree(ap_dev); + continue; + } ap_dev->device.release = ap_device_release; rc = device_register(&ap_dev->device); if (rc) { - kfree(ap_dev); + put_device(&ap_dev->device); continue; } /* Add device attributes. */ @@ -1066,12 +1150,17 @@ ap_config_timeout(unsigned long ptr) */ static inline void ap_schedule_poll_timer(void) { - if (ap_using_interrupts()) + ktime_t hr_time; + if (ap_using_interrupts() || ap_suspend_flag) return; if (hrtimer_is_queued(&ap_poll_timer)) return; - hrtimer_start(&ap_poll_timer, ktime_set(0, poll_timeout), - HRTIMER_MODE_ABS); + if (ktime_to_ns(hrtimer_expires_remaining(&ap_poll_timer)) <= 0) { + hr_time = ktime_set(0, poll_timeout); + hrtimer_forward_now(&ap_poll_timer, hr_time); + hrtimer_restart(&ap_poll_timer); + } + return; } /** @@ -1323,14 +1412,12 @@ static void ap_reset(struct ap_device *ap_dev) static int __ap_poll_device(struct ap_device *ap_dev, unsigned long *flags) { - spin_lock(&ap_dev->lock); if (!ap_dev->unregistered) { if (ap_poll_queue(ap_dev, flags)) ap_dev->unregistered = 1; if (ap_dev->reset == AP_RESET_DO) ap_reset(ap_dev); } - spin_unlock(&ap_dev->lock); return 0; } @@ -1357,7 +1444,9 @@ static void ap_poll_all(unsigned long dummy) flags = 0; spin_lock(&ap_device_list_lock); list_for_each_entry(ap_dev, &ap_device_list, list) { + spin_lock(&ap_dev->lock); __ap_poll_device(ap_dev, &flags); + spin_unlock(&ap_dev->lock); } spin_unlock(&ap_device_list_lock); } while (flags & 1); @@ -1384,6 +1473,8 @@ static int ap_poll_thread(void *data) set_user_nice(current, 19); while (1) { + if (ap_suspend_flag) + return 0; if (need_resched()) { schedule(); continue; @@ -1401,7 +1492,9 @@ static int ap_poll_thread(void *data) flags = 0; spin_lock_bh(&ap_device_list_lock); list_for_each_entry(ap_dev, &ap_device_list, list) { + spin_lock(&ap_dev->lock); __ap_poll_device(ap_dev, &flags); + spin_unlock(&ap_dev->lock); } spin_unlock_bh(&ap_device_list_lock); } @@ -1414,7 +1507,7 @@ static int ap_poll_thread_start(void) { int rc; - if (ap_using_interrupts()) + if (ap_using_interrupts() || ap_suspend_flag) return 0; mutex_lock(&ap_poll_thread_mutex); if (!ap_poll_kthread) { diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index e38e5d306fa..2930fc763ac 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -403,10 +403,14 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count) return len; } -void __init s390_virtio_console_init(void) +static int __init s390_virtio_console_init(void) { - virtio_cons_early_init(early_put_chars); + if (!MACHINE_IS_KVM) + return -ENODEV; + return virtio_cons_early_init(early_put_chars); } +console_initcall(s390_virtio_console_init); + /* * We do this after core stuff, but before the drivers. diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c index 52574ce797b..87dff11061b 100644 --- a/drivers/s390/net/netiucv.c +++ b/drivers/s390/net/netiucv.c @@ -1307,7 +1307,7 @@ static void netiucv_pm_complete(struct device *dev) */ static int netiucv_pm_freeze(struct device *dev) { - struct netiucv_priv *priv = dev->driver_data; + struct netiucv_priv *priv = dev_get_drvdata(dev); struct net_device *ndev = NULL; int rc = 0; @@ -1331,7 +1331,7 @@ out: */ static int netiucv_pm_restore_thaw(struct device *dev) { - struct netiucv_priv *priv = dev->driver_data; + struct netiucv_priv *priv = dev_get_drvdata(dev); struct net_device *ndev = NULL; int rc = 0; @@ -1839,9 +1839,10 @@ static int netiucv_register_device(struct net_device *ndev) return -ENOMEM; ret = device_register(dev); - - if (ret) + if (ret) { + put_device(dev); return ret; + } ret = netiucv_add_files(dev); if (ret) goto out_unreg; @@ -2226,8 +2227,10 @@ static int __init netiucv_init(void) netiucv_dev->release = (void (*)(struct device *))kfree; netiucv_dev->driver = &netiucv_driver; rc = device_register(netiucv_dev); - if (rc) + if (rc) { + put_device(netiucv_dev); goto out_driver; + } netiucv_banner(); return rc; diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 81d7f268418..691cecd03b8 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -655,7 +655,7 @@ static void qeth_l2_set_multicast_list(struct net_device *dev) for (dm = dev->mc_list; dm; dm = dm->next) qeth_l2_add_mc(card, dm->da_addr, 0); - list_for_each_entry(ha, &dev->uc_list, list) + list_for_each_entry(ha, &dev->uc.list, list) qeth_l2_add_mc(card, ha->addr, 1); spin_unlock_bh(&card->mclock); diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c index e76a320d373..102000d1af6 100644 --- a/drivers/s390/net/smsgiucv.c +++ b/drivers/s390/net/smsgiucv.c @@ -219,13 +219,13 @@ static int __init smsg_init(void) smsg_dev->driver = &smsg_driver; rc = device_register(smsg_dev); if (rc) - goto out_free_dev; + goto out_put; cpcmd("SET SMSG IUCV", NULL, 0, NULL); return 0; -out_free_dev: - kfree(smsg_dev); +out_put: + put_device(smsg_dev); out_free_path: iucv_path_free(smsg_path); smsg_path = NULL; diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 8030e25152f..c75d6f35cb5 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -553,40 +553,35 @@ static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear, _zfcp_erp_unit_reopen(unit, clear, id, ref); } -static void zfcp_erp_strategy_followup_actions(struct zfcp_erp_action *act) +static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act) { - struct zfcp_adapter *adapter = act->adapter; - struct zfcp_port *port = act->port; - struct zfcp_unit *unit = act->unit; - u32 status = act->status; - - /* initiate follow-up actions depending on success of finished action */ switch (act->action) { - case ZFCP_ERP_ACTION_REOPEN_ADAPTER: - if (status == ZFCP_ERP_SUCCEEDED) - _zfcp_erp_port_reopen_all(adapter, 0, "ersfa_1", NULL); - else - _zfcp_erp_adapter_reopen(adapter, 0, "ersfa_2", NULL); + _zfcp_erp_adapter_reopen(act->adapter, 0, "ersff_1", NULL); break; - case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: - if (status == ZFCP_ERP_SUCCEEDED) - _zfcp_erp_port_reopen(port, 0, "ersfa_3", NULL); - else - _zfcp_erp_adapter_reopen(adapter, 0, "ersfa_4", NULL); + _zfcp_erp_port_forced_reopen(act->port, 0, "ersff_2", NULL); break; - case ZFCP_ERP_ACTION_REOPEN_PORT: - if (status == ZFCP_ERP_SUCCEEDED) - _zfcp_erp_unit_reopen_all(port, 0, "ersfa_5", NULL); - else - _zfcp_erp_port_forced_reopen(port, 0, "ersfa_6", NULL); + _zfcp_erp_port_reopen(act->port, 0, "ersff_3", NULL); break; - case ZFCP_ERP_ACTION_REOPEN_UNIT: - if (status != ZFCP_ERP_SUCCEEDED) - _zfcp_erp_port_reopen(unit->port, 0, "ersfa_7", NULL); + _zfcp_erp_unit_reopen(act->unit, 0, "ersff_4", NULL); + break; + } +} + +static void zfcp_erp_strategy_followup_success(struct zfcp_erp_action *act) +{ + switch (act->action) { + case ZFCP_ERP_ACTION_REOPEN_ADAPTER: + _zfcp_erp_port_reopen_all(act->adapter, 0, "ersfs_1", NULL); + break; + case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: + _zfcp_erp_port_reopen(act->port, 0, "ersfs_2", NULL); + break; + case ZFCP_ERP_ACTION_REOPEN_PORT: + _zfcp_erp_unit_reopen_all(act->port, 0, "ersfs_3", NULL); break; } } @@ -801,7 +796,7 @@ static int zfcp_erp_port_forced_strategy(struct zfcp_erp_action *erp_action) return ZFCP_ERP_FAILED; case ZFCP_ERP_STEP_PHYS_PORT_CLOSING: - if (status & ZFCP_STATUS_PORT_PHYS_OPEN) + if (!(status & ZFCP_STATUS_PORT_PHYS_OPEN)) return ZFCP_ERP_SUCCEEDED; } return ZFCP_ERP_FAILED; @@ -853,11 +848,17 @@ void zfcp_erp_port_strategy_open_lookup(struct work_struct *work) gid_pn_work); retval = zfcp_fc_ns_gid_pn(&port->erp_action); - if (retval == -ENOMEM) - zfcp_erp_notify(&port->erp_action, ZFCP_ERP_NOMEM); - port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; - if (retval) - zfcp_erp_notify(&port->erp_action, ZFCP_ERP_FAILED); + if (!retval) { + port->erp_action.step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; + goto out; + } + if (retval == -ENOMEM) { + zfcp_erp_notify(&port->erp_action, ZFCP_STATUS_ERP_LOWMEM); + goto out; + } + /* all other error condtions */ + zfcp_erp_notify(&port->erp_action, 0); +out: zfcp_port_put(port); } @@ -1289,7 +1290,10 @@ static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action) retval = zfcp_erp_strategy_statechange(erp_action, retval); if (retval == ZFCP_ERP_EXIT) goto unlock; - zfcp_erp_strategy_followup_actions(erp_action); + if (retval == ZFCP_ERP_SUCCEEDED) + zfcp_erp_strategy_followup_success(erp_action); + if (retval == ZFCP_ERP_FAILED) + zfcp_erp_strategy_followup_failed(erp_action); unlock: write_unlock(&adapter->erp_lock); diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 2f0705d76b7..47daebfa7e5 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -79,11 +79,9 @@ static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) mutex_unlock(&wka_port->mutex); - wait_event_timeout( - wka_port->completion_wq, - wka_port->status == ZFCP_WKA_PORT_ONLINE || - wka_port->status == ZFCP_WKA_PORT_OFFLINE, - HZ >> 1); + wait_event(wka_port->completion_wq, + wka_port->status == ZFCP_WKA_PORT_ONLINE || + wka_port->status == ZFCP_WKA_PORT_OFFLINE); if (wka_port->status == ZFCP_WKA_PORT_ONLINE) { atomic_inc(&wka_port->refcount); diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index c57658f3d34..47795fbf081 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -670,8 +670,11 @@ static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) zfcp_fsf_sbal_check(adapter), 5 * HZ); if (ret > 0) return 0; - if (!ret) + if (!ret) { atomic_inc(&adapter->qdio_outb_full); + /* assume hanging outbound queue, try queue recovery */ + zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL); + } spin_lock_bh(&adapter->req_q_lock); return -EIO; @@ -722,7 +725,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, req = zfcp_fsf_alloc_qtcb(pool); if (unlikely(!req)) - return ERR_PTR(-EIO); + return ERR_PTR(-ENOMEM); if (adapter->req_no == 0) adapter->req_no++; @@ -1010,6 +1013,23 @@ skip_fsfstatus: send_ct->handler(send_ct->handler_data); } +static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale, + struct scatterlist *sg_req, + struct scatterlist *sg_resp) +{ + sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; + sbale[2].addr = sg_virt(sg_req); + sbale[2].length = sg_req->length; + sbale[3].addr = sg_virt(sg_resp); + sbale[3].length = sg_resp->length; + sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; +} + +static int zfcp_fsf_one_sbal(struct scatterlist *sg) +{ + return sg_is_last(sg) && sg->length <= PAGE_SIZE; +} + static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, struct scatterlist *sg_req, struct scatterlist *sg_resp, @@ -1020,30 +1040,30 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, int bytes; if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { - if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE || - !sg_is_last(sg_req) || !sg_is_last(sg_resp)) + if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp)) return -EOPNOTSUPP; - sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; - sbale[2].addr = sg_virt(sg_req); - sbale[2].length = sg_req->length; - sbale[3].addr = sg_virt(sg_resp); - sbale[3].length = sg_resp->length; - sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; + zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); + return 0; + } + + /* use single, unchained SBAL if it can hold the request */ + if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) { + zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); return 0; } bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, sg_req, max_sbals); if (bytes <= 0) - return -ENOMEM; + return -EIO; req->qtcb->bottom.support.req_buf_length = bytes; req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, sg_resp, max_sbals); if (bytes <= 0) - return -ENOMEM; + return -EIO; req->qtcb->bottom.support.resp_buf_length = bytes; return 0; @@ -1607,10 +1627,10 @@ static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) case FSF_ACCESS_DENIED: wka_port->status = ZFCP_WKA_PORT_OFFLINE; break; - case FSF_PORT_ALREADY_OPEN: - break; case FSF_GOOD: wka_port->handle = header->port_handle; + /* fall through */ + case FSF_PORT_ALREADY_OPEN: wka_port->status = ZFCP_WKA_PORT_ONLINE; } out: @@ -1731,15 +1751,16 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) zfcp_fsf_access_denied_port(req, port); break; case FSF_PORT_BOXED: - zfcp_erp_port_boxed(port, "fscpph2", req); - req->status |= ZFCP_STATUS_FSFREQ_ERROR | - ZFCP_STATUS_FSFREQ_RETRY; /* can't use generic zfcp_erp_modify_port_status because * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); list_for_each_entry(unit, &port->unit_list_head, list) atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); + zfcp_erp_port_boxed(port, "fscpph2", req); + req->status |= ZFCP_STATUS_FSFREQ_ERROR | + ZFCP_STATUS_FSFREQ_RETRY; + break; case FSF_ADAPTER_STATUS_AVAILABLE: switch (header->fsf_status_qual.word[0]) { @@ -2541,7 +2562,6 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, FSF_MAX_SBALS_PER_REQ); if (bytes != ZFCP_CFDC_MAX_SIZE) { - retval = -ENOMEM; zfcp_fsf_req_free(req); goto out; } diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 967ede73f4c..6925a178468 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -167,20 +167,21 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) struct zfcp_unit *unit = scpnt->device->hostdata; struct zfcp_fsf_req *old_req, *abrt_req; unsigned long flags; - unsigned long old_req_id = (unsigned long) scpnt->host_scribble; + unsigned long old_reqid = (unsigned long) scpnt->host_scribble; int retval = SUCCESS; int retry = 3; + char *dbf_tag; /* avoid race condition between late normal completion and abort */ write_lock_irqsave(&adapter->abort_lock, flags); spin_lock(&adapter->req_list_lock); - old_req = zfcp_reqlist_find(adapter, old_req_id); + old_req = zfcp_reqlist_find(adapter, old_reqid); spin_unlock(&adapter->req_list_lock); if (!old_req) { write_unlock_irqrestore(&adapter->abort_lock, flags); zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, - old_req_id); + old_reqid); return FAILED; /* completion could be in progress */ } old_req->data = NULL; @@ -189,7 +190,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) write_unlock_irqrestore(&adapter->abort_lock, flags); while (retry--) { - abrt_req = zfcp_fsf_abort_fcp_command(old_req_id, unit); + abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit); if (abrt_req) break; @@ -197,7 +198,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_RUNNING)) { zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL, - old_req_id); + old_reqid); return SUCCESS; } } @@ -208,13 +209,14 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) abrt_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) - zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, abrt_req, 0); + dbf_tag = "okay"; else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) - zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, abrt_req, 0); + dbf_tag = "lte2"; else { - zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, abrt_req, 0); + dbf_tag = "fail"; retval = FAILED; } + zfcp_scsi_dbf_event_abort(dbf_tag, adapter, scpnt, abrt_req, old_reqid); zfcp_fsf_req_free(abrt_req); return retval; } @@ -534,6 +536,9 @@ static void zfcp_scsi_rport_register(struct zfcp_port *port) struct fc_rport_identifiers ids; struct fc_rport *rport; + if (port->rport) + return; + ids.node_name = port->wwnn; ids.port_name = port->wwpn; ids.port_id = port->d_id; @@ -557,8 +562,10 @@ static void zfcp_scsi_rport_block(struct zfcp_port *port) { struct fc_rport *rport = port->rport; - if (rport) + if (rport) { fc_remote_port_delete(rport); + port->rport = NULL; + } } void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 3e51e64d110..0fe5cce818c 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -494,9 +494,14 @@ static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, struct Scsi_Host *scsi_host = class_to_shost(dev); struct zfcp_adapter *adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; + u64 util; + + spin_lock_bh(&adapter->qdio_stat_lock); + util = adapter->req_q_util; + spin_unlock_bh(&adapter->qdio_stat_lock); return sprintf(buf, "%d %llu\n", atomic_read(&adapter->qdio_outb_full), - (unsigned long long)adapter->req_q_util); + (unsigned long long)util); } static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); |