diff options
Diffstat (limited to 'drivers/s390')
65 files changed, 1898 insertions, 1492 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index acb78017e7d0..0a225ccda026 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -215,7 +215,7 @@ static int dasd_state_known_to_basic(struct dasd_device *device) return rc; } /* register 'device' debug area, used for all DBF_DEV_XXX calls */ - device->debug_area = debug_register(device->cdev->dev.bus_id, 1, 1, + device->debug_area = debug_register(dev_name(&device->cdev->dev), 1, 1, 8 * sizeof(long)); debug_register_view(device->debug_area, &debug_sprintf_view); debug_set_level(device->debug_area, DBF_WARNING); @@ -933,7 +933,7 @@ static void dasd_handle_killed_request(struct ccw_device *cdev, MESSAGE(KERN_DEBUG, "invalid status in handle_killed_request: " "bus_id %s, status %02x", - cdev->dev.bus_id, cqr->status); + dev_name(&cdev->dev), cqr->status); return; } @@ -942,7 +942,7 @@ static void dasd_handle_killed_request(struct ccw_device *cdev, device != dasd_device_from_cdev_locked(cdev) || strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { MESSAGE(KERN_DEBUG, "invalid device in request: bus_id %s", - cdev->dev.bus_id); + dev_name(&cdev->dev)); return; } @@ -982,11 +982,11 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm, break; case -ETIMEDOUT: printk(KERN_WARNING"%s(%s): request timed out\n", - __func__, cdev->dev.bus_id); + __func__, dev_name(&cdev->dev)); break; default: printk(KERN_WARNING"%s(%s): unknown error %ld\n", - __func__, cdev->dev.bus_id, PTR_ERR(irb)); + __func__, dev_name(&cdev->dev), PTR_ERR(irb)); } dasd_handle_killed_request(cdev, intparm); return; @@ -995,7 +995,7 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm, now = get_clock(); DBF_EVENT(DBF_ERR, "Interrupt: bus_id %s CS/DS %04x ip %08x", - cdev->dev.bus_id, ((irb->scsw.cmd.cstat << 8) | + dev_name(&cdev->dev), ((irb->scsw.cmd.cstat << 8) | irb->scsw.cmd.dstat), (unsigned int) intparm); /* check for unsolicited interrupts */ @@ -1019,7 +1019,7 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm, if (!device || strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { MESSAGE(KERN_DEBUG, "invalid device in request: bus_id %s", - cdev->dev.bus_id); + dev_name(&cdev->dev)); return; } @@ -1037,7 +1037,7 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm, if (cqr->status != DASD_CQR_IN_IO) { MESSAGE(KERN_DEBUG, "invalid status: bus_id %s, status %02x", - cdev->dev.bus_id, cqr->status); + dev_name(&cdev->dev), cqr->status); return; } DBF_DEV_EVENT(DBF_DEBUG, device, "Int: CS/DS 0x%04x for cqr %p", @@ -2134,14 +2134,14 @@ int dasd_generic_probe(struct ccw_device *cdev, if (ret) { printk(KERN_WARNING "dasd_generic_probe: could not set ccw-device options " - "for %s\n", cdev->dev.bus_id); + "for %s\n", dev_name(&cdev->dev)); return ret; } ret = dasd_add_sysfs_files(cdev); if (ret) { printk(KERN_WARNING "dasd_generic_probe: could not add sysfs entries " - "for %s\n", cdev->dev.bus_id); + "for %s\n", dev_name(&cdev->dev)); return ret; } cdev->handler = &dasd_int_handler; @@ -2152,13 +2152,13 @@ int dasd_generic_probe(struct ccw_device *cdev, * initial probe. */ if ((dasd_get_feature(cdev, DASD_FEATURE_INITIAL_ONLINE) > 0 ) || - (dasd_autodetect && dasd_busid_known(cdev->dev.bus_id) != 0)) + (dasd_autodetect && dasd_busid_known(dev_name(&cdev->dev)) != 0)) ret = ccw_device_set_online(cdev); if (ret) printk(KERN_WARNING "dasd_generic_probe: could not initially " "online ccw-device %s; return code: %d\n", - cdev->dev.bus_id, ret); + dev_name(&cdev->dev), ret); return 0; } @@ -2224,7 +2224,7 @@ int dasd_generic_set_online(struct ccw_device *cdev, printk (KERN_WARNING "dasd_generic couldn't online device %s " "- discipline DIAG not available\n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); dasd_delete_device(device); return -ENODEV; } @@ -2248,7 +2248,7 @@ int dasd_generic_set_online(struct ccw_device *cdev, printk (KERN_WARNING "dasd_generic couldn't online device %s " "with discipline %s rc=%i\n", - cdev->dev.bus_id, discipline->name, rc); + dev_name(&cdev->dev), discipline->name, rc); module_put(discipline->owner); module_put(base_discipline->owner); dasd_delete_device(device); @@ -2259,7 +2259,7 @@ int dasd_generic_set_online(struct ccw_device *cdev, if (device->state <= DASD_STATE_KNOWN) { printk (KERN_WARNING "dasd_generic discipline not found for %s\n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); rc = -ENODEV; dasd_set_target_state(device, DASD_STATE_NEW); if (device->block) @@ -2267,7 +2267,7 @@ int dasd_generic_set_online(struct ccw_device *cdev, dasd_delete_device(device); } else pr_debug("dasd_generic device %s found\n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); /* FIXME: we have to wait for the root device but we don't want * to wait for each single device but for all at once. */ diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 5c6e6f331cb0..b8f9c00633f3 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -1397,7 +1397,7 @@ static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( DEV_MESSAGE(KERN_ERR, cqr->startdev, "ERP on alias device for request %p," " recover on base device %s", cqr, - cqr->block->base->cdev->dev.bus_id); + dev_name(&cqr->block->base->cdev->dev)); } dasd_eckd_reset_ccw_to_base_io(cqr); erp->startdev = cqr->block->base; diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index cd3335c1c307..921443b01d16 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -515,9 +515,9 @@ dasd_devmap_from_cdev(struct ccw_device *cdev) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&cdev->dev)); if (IS_ERR(devmap)) - devmap = dasd_add_busid(cdev->dev.bus_id, + devmap = dasd_add_busid(dev_name(&cdev->dev), DASD_FEATURE_DEFAULT); return devmap; } @@ -584,7 +584,7 @@ dasd_delete_device(struct dasd_device *device) unsigned long flags; /* First remove device pointer from devmap. */ - devmap = dasd_find_busid(device->cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&device->cdev->dev)); BUG_ON(IS_ERR(devmap)); spin_lock(&dasd_devmap_lock); if (devmap->device != device) { @@ -674,7 +674,7 @@ dasd_ro_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; int ro_flag; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); if (!IS_ERR(devmap)) ro_flag = (devmap->features & DASD_FEATURE_READONLY) != 0; else @@ -723,7 +723,7 @@ dasd_erplog_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; int erplog; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); if (!IS_ERR(devmap)) erplog = (devmap->features & DASD_FEATURE_ERPLOG) != 0; else @@ -770,7 +770,7 @@ dasd_use_diag_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; int use_diag; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); if (!IS_ERR(devmap)) use_diag = (devmap->features & DASD_FEATURE_USEDIAG) != 0; else @@ -876,7 +876,7 @@ dasd_alias_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; int alias; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); spin_lock(&dasd_devmap_lock); if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) { spin_unlock(&dasd_devmap_lock); @@ -899,7 +899,7 @@ dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; char *vendor; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); spin_lock(&dasd_devmap_lock); if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0) vendor = devmap->uid.vendor; @@ -924,7 +924,7 @@ dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf) char ua_string[3]; struct dasd_uid *uid; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); spin_lock(&dasd_devmap_lock); if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) { spin_unlock(&dasd_devmap_lock); @@ -972,7 +972,7 @@ dasd_eer_show(struct device *dev, struct device_attribute *attr, char *buf) struct dasd_devmap *devmap; int eer_flag; - devmap = dasd_find_busid(dev->bus_id); + devmap = dasd_find_busid(dev_name(dev)); if (!IS_ERR(devmap) && devmap->device) eer_flag = dasd_eer_enabled(devmap->device); else @@ -1034,7 +1034,7 @@ dasd_get_uid(struct ccw_device *cdev, struct dasd_uid *uid) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&cdev->dev)); if (IS_ERR(devmap)) return PTR_ERR(devmap); spin_lock(&dasd_devmap_lock); @@ -1057,7 +1057,7 @@ dasd_set_uid(struct ccw_device *cdev, struct dasd_uid *uid) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&cdev->dev)); if (IS_ERR(devmap)) return PTR_ERR(devmap); @@ -1077,7 +1077,7 @@ dasd_get_feature(struct ccw_device *cdev, int feature) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&cdev->dev)); if (IS_ERR(devmap)) return PTR_ERR(devmap); @@ -1093,7 +1093,7 @@ dasd_set_feature(struct ccw_device *cdev, int feature, int flag) { struct dasd_devmap *devmap; - devmap = dasd_find_busid(cdev->dev.bus_id); + devmap = dasd_find_busid(dev_name(&cdev->dev)); if (IS_ERR(devmap)) return PTR_ERR(devmap); diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 773b3fe275b2..49f9d221e23d 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -6,6 +6,8 @@ * Martin Schwidefsky <schwidefsky@de.ibm.com> * Bugreports.to..: <Linux390@de.ibm.com> * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 + * EMC Symmetrix ioctl Copyright EMC Corporation, 2008 + * Author.........: Nigel Hislop <hislop_nigel@emc.com> * */ @@ -84,7 +86,7 @@ dasd_eckd_probe (struct ccw_device *cdev) if (ret) { printk(KERN_WARNING "dasd_eckd_probe: could not set ccw-device options " - "for %s\n", cdev->dev.bus_id); + "for %s\n", dev_name(&cdev->dev)); return ret; } ret = dasd_generic_probe(cdev, &dasd_eckd_discipline); @@ -1501,12 +1503,27 @@ static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device, return; } - /* just report other unsolicited interrupts */ - DEV_MESSAGE(KERN_DEBUG, device, "%s", - "unsolicited interrupt received"); - device->discipline->dump_sense(device, NULL, irb); - dasd_schedule_device_bh(device); + if ((irb->scsw.cmd.cc == 1) && + (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC) && + (irb->scsw.cmd.actl & SCSW_ACTL_START_PEND) && + (irb->scsw.cmd.stctl & SCSW_STCTL_STATUS_PEND)) { + /* fake irb do nothing, they are handled elsewhere */ + dasd_schedule_device_bh(device); + return; + } + + if (!(irb->esw.esw0.erw.cons)) { + /* just report other unsolicited interrupts */ + DEV_MESSAGE(KERN_ERR, device, "%s", + "unsolicited interrupt received"); + } else { + DEV_MESSAGE(KERN_ERR, device, "%s", + "unsolicited interrupt received " + "(sense available)"); + device->discipline->dump_sense(device, NULL, irb); + } + dasd_schedule_device_bh(device); return; }; @@ -2068,6 +2085,103 @@ dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp) return 0; } +/* + * Issue syscall I/O to EMC Symmetrix array. + * CCWs are PSF and RSSD + */ +static int dasd_symm_io(struct dasd_device *device, void __user *argp) +{ + struct dasd_symmio_parms usrparm; + char *psf_data, *rssd_result; + struct dasd_ccw_req *cqr; + struct ccw1 *ccw; + int rc; + + /* Copy parms from caller */ + rc = -EFAULT; + if (copy_from_user(&usrparm, argp, sizeof(usrparm))) + goto out; +#ifndef CONFIG_64BIT + /* Make sure pointers are sane even on 31 bit. */ + if ((usrparm.psf_data >> 32) != 0 || (usrparm.rssd_result >> 32) != 0) { + rc = -EINVAL; + goto out; + } +#endif + /* alloc I/O data area */ + psf_data = kzalloc(usrparm.psf_data_len, GFP_KERNEL | GFP_DMA); + rssd_result = kzalloc(usrparm.rssd_result_len, GFP_KERNEL | GFP_DMA); + if (!psf_data || !rssd_result) { + rc = -ENOMEM; + goto out_free; + } + + /* get syscall header from user space */ + rc = -EFAULT; + if (copy_from_user(psf_data, + (void __user *)(unsigned long) usrparm.psf_data, + usrparm.psf_data_len)) + goto out_free; + + /* sanity check on syscall header */ + if (psf_data[0] != 0x17 && psf_data[1] != 0xce) { + rc = -EINVAL; + goto out_free; + } + + /* setup CCWs for PSF + RSSD */ + cqr = dasd_smalloc_request("ECKD", 2 , 0, device); + if (IS_ERR(cqr)) { + DEV_MESSAGE(KERN_WARNING, device, "%s", + "Could not allocate initialization request"); + rc = PTR_ERR(cqr); + goto out_free; + } + + cqr->startdev = device; + cqr->memdev = device; + cqr->retries = 3; + cqr->expires = 10 * HZ; + cqr->buildclk = get_clock(); + cqr->status = DASD_CQR_FILLED; + + /* Build the ccws */ + ccw = cqr->cpaddr; + + /* PSF ccw */ + ccw->cmd_code = DASD_ECKD_CCW_PSF; + ccw->count = usrparm.psf_data_len; + ccw->flags |= CCW_FLAG_CC; + ccw->cda = (__u32)(addr_t) psf_data; + + ccw++; + + /* RSSD ccw */ + ccw->cmd_code = DASD_ECKD_CCW_RSSD; + ccw->count = usrparm.rssd_result_len; + ccw->flags = CCW_FLAG_SLI ; + ccw->cda = (__u32)(addr_t) rssd_result; + + rc = dasd_sleep_on(cqr); + if (rc) + goto out_sfree; + + rc = -EFAULT; + if (copy_to_user((void __user *)(unsigned long) usrparm.rssd_result, + rssd_result, usrparm.rssd_result_len)) + goto out_sfree; + rc = 0; + +out_sfree: + dasd_sfree_request(cqr, cqr->memdev); +out_free: + kfree(rssd_result); + kfree(psf_data); +out: + DBF_DEV_EVENT(DBF_WARNING, device, "Symmetrix ioctl: rc=%d", rc); + return rc; +} + static int dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp) { @@ -2086,6 +2200,8 @@ dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp) return dasd_eckd_reserve(device); case BIODASDSLCK: return dasd_eckd_steal_lock(device); + case BIODASDSYMMIO: + return dasd_symm_io(device, argp); default: return -ENOIOCTLCMD; } @@ -2145,13 +2261,13 @@ static void dasd_eckd_dump_sense(struct dasd_device *device, /* dump the sense data */ len = sprintf(page, KERN_ERR PRINTK_HEADER " I/O status report for device %s:\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " in req: %p CS: 0x%02X DS: 0x%02X\n", req, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing CCW: %p\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), (void *) (addr_t) irb->scsw.cmd.cpa); if (irb->esw.esw0.erw.cons) { for (sl = 0; sl < 4; sl++) { diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c index bf512ac75b9e..892e2878d61b 100644 --- a/drivers/s390/block/dasd_eer.c +++ b/drivers/s390/block/dasd_eer.c @@ -309,7 +309,8 @@ static void dasd_eer_write_standard_trigger(struct dasd_device *device, do_gettimeofday(&tv); header.tv_sec = tv.tv_sec; header.tv_usec = tv.tv_usec; - strncpy(header.busid, device->cdev->dev.bus_id, DASD_EER_BUSID_SIZE); + strncpy(header.busid, dev_name(&device->cdev->dev), + DASD_EER_BUSID_SIZE); spin_lock_irqsave(&bufferlock, flags); list_for_each_entry(eerb, &bufferlist, list) { @@ -349,7 +350,8 @@ static void dasd_eer_write_snss_trigger(struct dasd_device *device, do_gettimeofday(&tv); header.tv_sec = tv.tv_sec; header.tv_usec = tv.tv_usec; - strncpy(header.busid, device->cdev->dev.bus_id, DASD_EER_BUSID_SIZE); + strncpy(header.busid, dev_name(&device->cdev->dev), + DASD_EER_BUSID_SIZE); spin_lock_irqsave(&bufferlock, flags); list_for_each_entry(eerb, &bufferlist, list) { diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index aa0c533423a5..93d9b6452a94 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -451,13 +451,13 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, } len = sprintf(page, KERN_ERR PRINTK_HEADER " I/O status report for device %s:\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " in req: %p CS: 0x%02X DS: 0x%02X\n", req, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing CCW: %p\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), (void *) (addr_t) irb->scsw.cmd.cpa); if (irb->esw.esw0.erw.cons) { for (sl = 0; sl < 4; sl++) { diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 31ecaa4a40e4..489d5fe488fb 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -126,7 +126,7 @@ do { \ #define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\ do { \ printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ - d_device->cdev->dev.bus_id, d_args); \ + dev_name(&d_device->cdev->dev), d_args); \ DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \ } while(0) @@ -140,7 +140,7 @@ do { \ #define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\ do { \ printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ - d_device->cdev->dev.bus_id, d_args); \ + dev_name(&d_device->cdev->dev), d_args); \ } while(0) #define MESSAGE_LOG(d_loglevel,d_string,d_args...)\ diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c index 03c0e40a92ff..9088de84b45d 100644 --- a/drivers/s390/block/dasd_proc.c +++ b/drivers/s390/block/dasd_proc.c @@ -67,7 +67,7 @@ dasd_devices_show(struct seq_file *m, void *v) return 0; } /* Print device number. */ - seq_printf(m, "%s", device->cdev->dev.bus_id); + seq_printf(m, "%s", dev_name(&device->cdev->dev)); /* Print discipline string. */ if (device != NULL && device->discipline != NULL) seq_printf(m, "(%s)", device->discipline->name); @@ -76,7 +76,8 @@ dasd_devices_show(struct seq_file *m, void *v) /* Print kdev. */ if (block->gdp) seq_printf(m, " at (%3d:%6d)", - block->gdp->major, block->gdp->first_minor); + MAJOR(disk_devt(block->gdp)), + MINOR(disk_devt(block->gdp))); else seq_printf(m, " at (???:??????)"); /* Print device name. */ diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 711b3004b3e6..a7ff167d5b81 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -31,7 +31,6 @@ #define PRINT_WARN(x...) printk(KERN_WARNING DCSSBLK_NAME " warning: " x) #define PRINT_ERR(x...) printk(KERN_ERR DCSSBLK_NAME " error: " x) - static int dcssblk_open(struct inode *inode, struct file *filp); static int dcssblk_release(struct inode *inode, struct file *filp); static int dcssblk_make_request(struct request_queue *q, struct bio *bio); @@ -48,6 +47,30 @@ static struct block_device_operations dcssblk_devops = { .direct_access = dcssblk_direct_access, }; +struct dcssblk_dev_info { + struct list_head lh; + struct device dev; + char segment_name[BUS_ID_SIZE]; + atomic_t use_count; + struct gendisk *gd; + unsigned long start; + unsigned long end; + int segment_type; + unsigned char save_pending; + unsigned char is_shared; + struct request_queue *dcssblk_queue; + int num_of_segments; + struct list_head seg_list; +}; + +struct segment_info { + struct list_head lh; + char segment_name[BUS_ID_SIZE]; + unsigned long start; + unsigned long end; + int segment_type; +}; + static ssize_t dcssblk_add_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count); static ssize_t dcssblk_remove_store(struct device * dev, struct device_attribute *attr, const char * buf, @@ -58,30 +81,20 @@ static ssize_t dcssblk_save_show(struct device *dev, struct device_attribute *at static ssize_t dcssblk_shared_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count); static ssize_t dcssblk_shared_show(struct device *dev, struct device_attribute *attr, char *buf); +static ssize_t dcssblk_seglist_show(struct device *dev, + struct device_attribute *attr, + char *buf); static DEVICE_ATTR(add, S_IWUSR, NULL, dcssblk_add_store); static DEVICE_ATTR(remove, S_IWUSR, NULL, dcssblk_remove_store); -static DEVICE_ATTR(save, S_IWUSR | S_IRUGO, dcssblk_save_show, +static DEVICE_ATTR(save, S_IWUSR | S_IRUSR, dcssblk_save_show, dcssblk_save_store); -static DEVICE_ATTR(shared, S_IWUSR | S_IRUGO, dcssblk_shared_show, +static DEVICE_ATTR(shared, S_IWUSR | S_IRUSR, dcssblk_shared_show, dcssblk_shared_store); +static DEVICE_ATTR(seglist, S_IRUSR, dcssblk_seglist_show, NULL); static struct device *dcssblk_root_dev; -struct dcssblk_dev_info { - struct list_head lh; - struct device dev; - char segment_name[BUS_ID_SIZE]; - atomic_t use_count; - struct gendisk *gd; - unsigned long start; - unsigned long end; - int segment_type; - unsigned char save_pending; - unsigned char is_shared; - struct request_queue *dcssblk_queue; -}; - static LIST_HEAD(dcssblk_devices); static struct rw_semaphore dcssblk_devices_sem; @@ -91,8 +104,15 @@ static struct rw_semaphore dcssblk_devices_sem; static void dcssblk_release_segment(struct device *dev) { - PRINT_DEBUG("segment release fn called for %s\n", dev->bus_id); - kfree(container_of(dev, struct dcssblk_dev_info, dev)); + struct dcssblk_dev_info *dev_info; + struct segment_info *entry, *temp; + + dev_info = container_of(dev, struct dcssblk_dev_info, dev); + list_for_each_entry_safe(entry, temp, &dev_info->seg_list, lh) { + list_del(&entry->lh); + kfree(entry); + } + kfree(dev_info); module_put(THIS_MODULE); } @@ -114,7 +134,7 @@ dcssblk_assign_free_minor(struct dcssblk_dev_info *dev_info) found = 0; // test if minor available list_for_each_entry(entry, &dcssblk_devices, lh) - if (minor == entry->gd->first_minor) + if (minor == MINOR(disk_devt(entry->gd))) found++; if (!found) break; // got unused minor } @@ -142,6 +162,169 @@ dcssblk_get_device_by_name(char *name) return NULL; } +/* + * get the struct segment_info from seg_list + * for the given name. + * down_read(&dcssblk_devices_sem) must be held. + */ +static struct segment_info * +dcssblk_get_segment_by_name(char *name) +{ + struct dcssblk_dev_info *dev_info; + struct segment_info *entry; + + list_for_each_entry(dev_info, &dcssblk_devices, lh) { + list_for_each_entry(entry, &dev_info->seg_list, lh) { + if (!strcmp(name, entry->segment_name)) + return entry; + } + } + return NULL; +} + +/* + * get the highest address of the multi-segment block. + */ +static unsigned long +dcssblk_find_highest_addr(struct dcssblk_dev_info *dev_info) +{ + unsigned long highest_addr; + struct segment_info *entry; + + highest_addr = 0; + list_for_each_entry(entry, &dev_info->seg_list, lh) { + if (highest_addr < entry->end) + highest_addr = entry->end; + } + return highest_addr; +} + +/* + * get the lowest address of the multi-segment block. + */ +static unsigned long +dcssblk_find_lowest_addr(struct dcssblk_dev_info *dev_info) +{ + int set_first; + unsigned long lowest_addr; + struct segment_info *entry; + + set_first = 0; + lowest_addr = 0; + list_for_each_entry(entry, &dev_info->seg_list, lh) { + if (set_first == 0) { + lowest_addr = entry->start; + set_first = 1; + } else { + if (lowest_addr > entry->start) + lowest_addr = entry->start; + } + } + return lowest_addr; +} + +/* + * Check continuity of segments. + */ +static int +dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) +{ + int i, j, rc; + struct segment_info *sort_list, *entry, temp; + + if (dev_info->num_of_segments <= 1) + return 0; + + sort_list = kzalloc( + sizeof(struct segment_info) * dev_info->num_of_segments, + GFP_KERNEL); + if (sort_list == NULL) + return -ENOMEM; + i = 0; + list_for_each_entry(entry, &dev_info->seg_list, lh) { + memcpy(&sort_list[i], entry, sizeof(struct segment_info)); + i++; + } + + /* sort segments */ + for (i = 0; i < dev_info->num_of_segments; i++) + for (j = 0; j < dev_info->num_of_segments; j++) + if (sort_list[j].start > sort_list[i].start) { + memcpy(&temp, &sort_list[i], + sizeof(struct segment_info)); + memcpy(&sort_list[i], &sort_list[j], + sizeof(struct segment_info)); + memcpy(&sort_list[j], &temp, + sizeof(struct segment_info)); + } + + /* check continuity */ + for (i = 0; i < dev_info->num_of_segments - 1; i++) { + if ((sort_list[i].end + 1) != sort_list[i+1].start) { + PRINT_ERR("Segment %s is not contiguous with " + "segment %s\n", + sort_list[i].segment_name, + sort_list[i+1].segment_name); + rc = -EINVAL; + goto out; + } + /* EN and EW are allowed in a block device */ + if (sort_list[i].segment_type != sort_list[i+1].segment_type) { + if (!(sort_list[i].segment_type & SEGMENT_EXCLUSIVE) || + (sort_list[i].segment_type == SEG_TYPE_ER) || + !(sort_list[i+1].segment_type & + SEGMENT_EXCLUSIVE) || + (sort_list[i+1].segment_type == SEG_TYPE_ER)) { + PRINT_ERR("Segment %s has different type from " + "segment %s\n", + sort_list[i].segment_name, + sort_list[i+1].segment_name); + rc = -EINVAL; + goto out; + } + } + } + rc = 0; +out: + kfree(sort_list); + return rc; +} + +/* + * Load a segment + */ +static int +dcssblk_load_segment(char *name, struct segment_info **seg_info) +{ + int rc; + + /* already loaded? */ + down_read(&dcssblk_devices_sem); + *seg_info = dcssblk_get_segment_by_name(name); + up_read(&dcssblk_devices_sem); + if (*seg_info != NULL) + return -EEXIST; + + /* get a struct segment_info */ + *seg_info = kzalloc(sizeof(struct segment_info), GFP_KERNEL); + if (*seg_info == NULL) + return -ENOMEM; + + strcpy((*seg_info)->segment_name, name); + + /* load the segment */ + rc = segment_load(name, SEGMENT_SHARED, + &(*seg_info)->start, &(*seg_info)->end); + if (rc < 0) { + segment_warning(rc, (*seg_info)->segment_name); + kfree(*seg_info); + } else { + INIT_LIST_HEAD(&(*seg_info)->lh); + (*seg_info)->segment_type = rc; + } + return rc; +} + static void dcssblk_unregister_callback(struct device *dev) { device_unregister(dev); @@ -165,6 +348,7 @@ static ssize_t dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const char *inbuf, size_t count) { struct dcssblk_dev_info *dev_info; + struct segment_info *entry, *temp; int rc; if ((count > 1) && (inbuf[1] != '\n') && (inbuf[1] != '\0')) @@ -172,46 +356,46 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch down_write(&dcssblk_devices_sem); dev_info = container_of(dev, struct dcssblk_dev_info, dev); if (atomic_read(&dev_info->use_count)) { - PRINT_ERR("share: segment %s is busy!\n", - dev_info->segment_name); rc = -EBUSY; goto out; } if (inbuf[0] == '1') { - // reload segment in shared mode - rc = segment_modify_shared(dev_info->segment_name, - SEGMENT_SHARED); - if (rc < 0) { - BUG_ON(rc == -EINVAL); - if (rc != -EAGAIN) - goto removeseg; - } else { - dev_info->is_shared = 1; - switch (dev_info->segment_type) { - case SEG_TYPE_SR: - case SEG_TYPE_ER: - case SEG_TYPE_SC: - set_disk_ro(dev_info->gd,1); + /* reload segments in shared mode */ + list_for_each_entry(entry, &dev_info->seg_list, lh) { + rc = segment_modify_shared(entry->segment_name, + SEGMENT_SHARED); + if (rc < 0) { + BUG_ON(rc == -EINVAL); + if (rc != -EAGAIN) + goto removeseg; } } + dev_info->is_shared = 1; + switch (dev_info->segment_type) { + case SEG_TYPE_SR: + case SEG_TYPE_ER: + case SEG_TYPE_SC: + set_disk_ro(dev_info->gd, 1); + } } else if (inbuf[0] == '0') { - // reload segment in exclusive mode + /* reload segments in exclusive mode */ if (dev_info->segment_type == SEG_TYPE_SC) { PRINT_ERR("Segment type SC (%s) cannot be loaded in " - "non-shared mode\n", dev_info->segment_name); + "non-shared mode\n", dev_info->segment_name); rc = -EINVAL; goto out; } - rc = segment_modify_shared(dev_info->segment_name, - SEGMENT_EXCLUSIVE); - if (rc < 0) { - BUG_ON(rc == -EINVAL); - if (rc != -EAGAIN) - goto removeseg; - } else { - dev_info->is_shared = 0; - set_disk_ro(dev_info->gd, 0); + list_for_each_entry(entry, &dev_info->seg_list, lh) { + rc = segment_modify_shared(entry->segment_name, + SEGMENT_EXCLUSIVE); + if (rc < 0) { + BUG_ON(rc == -EINVAL); + if (rc != -EAGAIN) + goto removeseg; + } } + dev_info->is_shared = 0; + set_disk_ro(dev_info->gd, 0); } else { rc = -EINVAL; goto out; @@ -220,8 +404,14 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch goto out; removeseg: - PRINT_ERR("Could not reload segment %s, removing it now!\n", - dev_info->segment_name); + PRINT_ERR("Could not reload segment(s) of the device %s, removing " + "segment(s) now!\n", + dev_info->segment_name); + temp = entry; + list_for_each_entry(entry, &dev_info->seg_list, lh) { + if (entry != temp) + segment_unload(entry->segment_name); + } list_del(&dev_info->lh); del_gendisk(dev_info->gd); @@ -254,6 +444,7 @@ static ssize_t dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char *inbuf, size_t count) { struct dcssblk_dev_info *dev_info; + struct segment_info *entry; if ((count > 1) && (inbuf[1] != '\n') && (inbuf[1] != '\0')) return -EINVAL; @@ -263,14 +454,16 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char if (inbuf[0] == '1') { if (atomic_read(&dev_info->use_count) == 0) { // device is idle => we save immediately - PRINT_INFO("Saving segment %s\n", + PRINT_INFO("Saving segment(s) of the device %s\n", dev_info->segment_name); - segment_save(dev_info->segment_name); + list_for_each_entry(entry, &dev_info->seg_list, lh) { + segment_save(entry->segment_name); + } } else { // device is busy => we save it when it becomes // idle in dcssblk_release - PRINT_INFO("Segment %s is currently busy, it will " - "be saved when it becomes idle...\n", + PRINT_INFO("Device %s is currently busy, segment(s) " + "will be saved when it becomes idle...\n", dev_info->segment_name); dev_info->save_pending = 1; } @@ -279,7 +472,8 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char // device is busy & the user wants to undo his save // request dev_info->save_pending = 0; - PRINT_INFO("Pending save for segment %s deactivated\n", + PRINT_INFO("Pending save for segment(s) of the device " + "%s deactivated\n", dev_info->segment_name); } } else { @@ -291,66 +485,123 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char } /* + * device attribute for showing all segments in a device + */ +static ssize_t +dcssblk_seglist_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int i; + + struct dcssblk_dev_info *dev_info; + struct segment_info *entry; + + down_read(&dcssblk_devices_sem); + dev_info = container_of(dev, struct dcssblk_dev_info, dev); + i = 0; + buf[0] = '\0'; + list_for_each_entry(entry, &dev_info->seg_list, lh) { + strcpy(&buf[i], entry->segment_name); + i += strlen(entry->segment_name); + buf[i] = '\n'; + i++; + } + up_read(&dcssblk_devices_sem); + return i; +} + +/* * device attribute for adding devices */ static ssize_t dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - int rc, i; + int rc, i, j, num_of_segments; struct dcssblk_dev_info *dev_info; + struct segment_info *seg_info, *temp; char *local_buf; unsigned long seg_byte_size; dev_info = NULL; + seg_info = NULL; if (dev != dcssblk_root_dev) { rc = -EINVAL; goto out_nobuf; } + if ((count < 1) || (buf[0] == '\0') || (buf[0] == '\n')) { + rc = -ENAMETOOLONG; + goto out_nobuf; + } + local_buf = kmalloc(count + 1, GFP_KERNEL); if (local_buf == NULL) { rc = -ENOMEM; goto out_nobuf; } + /* * parse input */ + num_of_segments = 0; for (i = 0; ((buf[i] != '\0') && (buf[i] != '\n') && i < count); i++) { - local_buf[i] = toupper(buf[i]); + for (j = i; (buf[j] != ':') && + (buf[j] != '\0') && + (buf[j] != '\n') && + j < count; j++) { + local_buf[j-i] = toupper(buf[j]); + } + local_buf[j-i] = '\0'; + if (((j - i) == 0) || ((j - i) > 8)) { + rc = -ENAMETOOLONG; + goto seg_list_del; + } + + rc = dcssblk_load_segment(local_buf, &seg_info); + if (rc < 0) + goto seg_list_del; + /* + * get a struct dcssblk_dev_info + */ + if (num_of_segments == 0) { + dev_info = kzalloc(sizeof(struct dcssblk_dev_info), + GFP_KERNEL); + if (dev_info == NULL) { + rc = -ENOMEM; + goto out; + } + strcpy(dev_info->segment_name, local_buf); + dev_info->segment_type = seg_info->segment_type; + INIT_LIST_HEAD(&dev_info->seg_list); + } + list_add_tail(&seg_info->lh, &dev_info->seg_list); + num_of_segments++; + i = j; + + if ((buf[j] == '\0') || (buf[j] == '\n')) + break; } - local_buf[i] = '\0'; - if ((i == 0) || (i > 8)) { + + /* no trailing colon at the end of the input */ + if ((i > 0) && (buf[i-1] == ':')) { rc = -ENAMETOOLONG; - goto out; - } - /* - * already loaded? - */ - down_read(&dcssblk_devices_sem); - dev_info = dcssblk_get_device_by_name(local_buf); - up_read(&dcssblk_devices_sem); - if (dev_info != NULL) { - PRINT_WARN("Segment %s already loaded!\n", local_buf); - rc = -EEXIST; - goto out; - } - /* - * get a struct dcssblk_dev_info - */ - dev_info = kzalloc(sizeof(struct dcssblk_dev_info), GFP_KERNEL); - if (dev_info == NULL) { - rc = -ENOMEM; - goto out; + goto seg_list_del; } + strlcpy(local_buf, buf, i + 1); + dev_info->num_of_segments = num_of_segments; + rc = dcssblk_is_continuous(dev_info); + if (rc < 0) + goto seg_list_del; + + dev_info->start = dcssblk_find_lowest_addr(dev_info); + dev_info->end = dcssblk_find_highest_addr(dev_info); - strcpy(dev_info->segment_name, local_buf); - strlcpy(dev_info->dev.bus_id, local_buf, BUS_ID_SIZE); + dev_set_name(&dev_info->dev, dev_info->segment_name); dev_info->dev.release = dcssblk_release_segment; INIT_LIST_HEAD(&dev_info->lh); - dev_info->gd = alloc_disk(DCSSBLK_MINORS_PER_DISK); if (dev_info->gd == NULL) { rc = -ENOMEM; - goto free_dev_info; + goto seg_list_del; } dev_info->gd->major = dcssblk_major; dev_info->gd->fops = &dcssblk_devops; @@ -360,59 +611,43 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char dev_info->gd->driverfs_dev = &dev_info->dev; blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request); blk_queue_hardsect_size(dev_info->dcssblk_queue, 4096); - /* - * load the segment - */ - rc = segment_load(local_buf, SEGMENT_SHARED, - &dev_info->start, &dev_info->end); - if (rc < 0) { - segment_warning(rc, dev_info->segment_name); - goto dealloc_gendisk; - } + seg_byte_size = (dev_info->end - dev_info->start + 1); set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors - PRINT_INFO("Loaded segment %s, size = %lu Byte, " + PRINT_INFO("Loaded segment(s) %s, size = %lu Byte, " "capacity = %lu (512 Byte) sectors\n", local_buf, seg_byte_size, seg_byte_size >> 9); - dev_info->segment_type = rc; dev_info->save_pending = 0; dev_info->is_shared = 1; dev_info->dev.parent = dcssblk_root_dev; /* - * get minor, add to list + *get minor, add to list */ down_write(&dcssblk_devices_sem); - if (dcssblk_get_device_by_name(local_buf)) { - up_write(&dcssblk_devices_sem); + if (dcssblk_get_segment_by_name(local_buf)) { rc = -EEXIST; - goto unload_seg; + goto release_gd; } rc = dcssblk_assign_free_minor(dev_info); - if (rc) { - up_write(&dcssblk_devices_sem); - PRINT_ERR("No free minor number available! " - "Unloading segment...\n"); - goto unload_seg; - } + if (rc) + goto release_gd; sprintf(dev_info->gd->disk_name, "dcssblk%d", - dev_info->gd->first_minor); + MINOR(disk_devt(dev_info->gd))); list_add_tail(&dev_info->lh, &dcssblk_devices); if (!try_module_get(THIS_MODULE)) { rc = -ENODEV; - goto list_del; + goto dev_list_del; } /* * register the device */ rc = device_register(&dev_info->dev); if (rc) { - PRINT_ERR("Segment %s could not be registered RC=%d\n", - local_buf, rc); module_put(THIS_MODULE); - goto list_del; + goto dev_list_del; } get_device(&dev_info->dev); rc = device_create_file(&dev_info->dev, &dev_attr_shared); @@ -421,6 +656,9 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char rc = device_create_file(&dev_info->dev, &dev_attr_save); if (rc) goto unregister_dev; + rc = device_create_file(&dev_info->dev, &dev_attr_seglist); + if (rc) + goto unregister_dev; add_disk(dev_info->gd); @@ -434,7 +672,6 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char set_disk_ro(dev_info->gd,0); break; } - PRINT_DEBUG("Segment %s loaded successfully\n", local_buf); up_write(&dcssblk_devices_sem); rc = count; goto out; @@ -445,20 +682,27 @@ unregister_dev: dev_info->gd->queue = NULL; put_disk(dev_info->gd); device_unregister(&dev_info->dev); - segment_unload(dev_info->segment_name); + list_for_each_entry(seg_info, &dev_info->seg_list, lh) { + segment_unload(seg_info->segment_name); + } put_device(&dev_info->dev); up_write(&dcssblk_devices_sem); goto out; -list_del: +dev_list_del: list_del(&dev_info->lh); - up_write(&dcssblk_devices_sem); -unload_seg: - segment_unload(local_buf); -dealloc_gendisk: +release_gd: blk_cleanup_queue(dev_info->dcssblk_queue); dev_info->gd->queue = NULL; put_disk(dev_info->gd); -free_dev_info: + up_write(&dcssblk_devices_sem); +seg_list_del: + if (dev_info == NULL) + goto out; + list_for_each_entry_safe(seg_info, temp, &dev_info->seg_list, lh) { + list_del(&seg_info->lh); + segment_unload(seg_info->segment_name); + kfree(seg_info); + } kfree(dev_info); out: kfree(local_buf); @@ -473,6 +717,7 @@ static ssize_t dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct dcssblk_dev_info *dev_info; + struct segment_info *entry; int rc, i; char *local_buf; @@ -499,26 +744,28 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch dev_info = dcssblk_get_device_by_name(local_buf); if (dev_info == NULL) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Segment %s is not loaded!\n", local_buf); + PRINT_WARN("Device %s is not loaded!\n", local_buf); rc = -ENODEV; goto out_buf; } if (atomic_read(&dev_info->use_count) != 0) { up_write(&dcssblk_devices_sem); - PRINT_WARN("Segment %s is in use!\n", local_buf); + PRINT_WARN("Device %s is in use!\n", local_buf); rc = -EBUSY; goto out_buf; } - list_del(&dev_info->lh); + list_del(&dev_info->lh); del_gendisk(dev_info->gd); blk_cleanup_queue(dev_info->dcssblk_queue); dev_info->gd->queue = NULL; put_disk(dev_info->gd); device_unregister(&dev_info->dev); - segment_unload(dev_info->segment_name); - PRINT_DEBUG("Segment %s unloaded successfully\n", - dev_info->segment_name); + + /* unload all related segments */ + list_for_each_entry(entry, &dev_info->seg_list, lh) + segment_unload(entry->segment_name); + put_device(&dev_info->dev); up_write(&dcssblk_devices_sem); @@ -550,6 +797,7 @@ static int dcssblk_release(struct inode *inode, struct file *filp) { struct dcssblk_dev_info *dev_info; + struct segment_info *entry; int rc; dev_info = inode->i_bdev->bd_disk->private_data; @@ -560,9 +808,11 @@ dcssblk_release(struct inode *inode, struct file *filp) down_write(&dcssblk_devices_sem); if (atomic_dec_and_test(&dev_info->use_count) && (dev_info->save_pending)) { - PRINT_INFO("Segment %s became idle and is being saved now\n", + PRINT_INFO("Device %s became idle and is being saved now\n", dev_info->segment_name); - segment_save(dev_info->segment_name); + list_for_each_entry(entry, &dev_info->seg_list, lh) { + segment_save(entry->segment_name); + } dev_info->save_pending = 0; } up_write(&dcssblk_devices_sem); @@ -602,7 +852,8 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio) case SEG_TYPE_SC: /* cannot write to these segments */ if (bio_data_dir(bio) == WRITE) { - PRINT_WARN("rejecting write to ro segment %s\n", dev_info->dev.bus_id); + PRINT_WARN("rejecting write to ro device %s\n", + dev_name(&dev_info->dev)); goto fail; } } @@ -657,7 +908,7 @@ static void dcssblk_check_params(void) { int rc, i, j, k; - char buf[9]; + char buf[DCSSBLK_PARM_LEN + 1]; struct dcssblk_dev_info *dev_info; for (i = 0; (i < DCSSBLK_PARM_LEN) && (dcssblk_segments[i] != '\0'); @@ -665,15 +916,16 @@ dcssblk_check_params(void) for (j = i; (dcssblk_segments[j] != ',') && (dcssblk_segments[j] != '\0') && (dcssblk_segments[j] != '(') && - (j - i) < 8; j++) + (j < DCSSBLK_PARM_LEN); j++) { buf[j-i] = dcssblk_segments[j]; } buf[j-i] = '\0'; rc = dcssblk_add_store(dcssblk_root_dev, NULL, buf, j-i); if ((rc >= 0) && (dcssblk_segments[j] == '(')) { - for (k = 0; buf[k] != '\0'; k++) + for (k = 0; (buf[k] != ':') && (buf[k] != '\0'); k++) buf[k] = toupper(buf[k]); + buf[k] = '\0'; if (!strncmp(&dcssblk_segments[j], "(local)", 7)) { down_read(&dcssblk_devices_sem); dev_info = dcssblk_get_device_by_name(buf); @@ -740,10 +992,12 @@ module_exit(dcssblk_exit); module_param_string(segments, dcssblk_segments, DCSSBLK_PARM_LEN, 0444); MODULE_PARM_DESC(segments, "Name of DCSS segment(s) to be loaded, " - "comma-separated list, each name max. 8 chars.\n" - "Adding \"(local)\" to segment name equals echoing 0 to " - "/sys/devices/dcssblk/<segment name>/shared after loading " - "the segment - \n" - "e.g. segments=\"mydcss1,mydcss2,mydcss3(local)\""); + "comma-separated list, names in each set separated " + "by commas are separated by colons, each set contains " + "names of contiguous segments and each name max. 8 chars.\n" + "Adding \"(local)\" to the end of each set equals echoing 0 " + "to /sys/devices/dcssblk/<device name>/shared after loading " + "the contiguous segments - \n" + "e.g. segments=\"mydcss1,mydcss2:mydcss3,mydcss4(local)\""); MODULE_LICENSE("GPL"); diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c index dd9b986389a2..03916989ed2d 100644 --- a/drivers/s390/block/xpram.c +++ b/drivers/s390/block/xpram.c @@ -56,6 +56,7 @@ typedef struct { static xpram_device_t xpram_devices[XPRAM_MAX_DEVS]; static unsigned int xpram_sizes[XPRAM_MAX_DEVS]; static struct gendisk *xpram_disks[XPRAM_MAX_DEVS]; +static struct request_queue *xpram_queues[XPRAM_MAX_DEVS]; static unsigned int xpram_pages; static int xpram_devs; @@ -330,18 +331,22 @@ static int __init xpram_setup_sizes(unsigned long pages) return 0; } -static struct request_queue *xpram_queue; - static int __init xpram_setup_blkdev(void) { unsigned long offset; int i, rc = -ENOMEM; for (i = 0; i < xpram_devs; i++) { - struct gendisk *disk = alloc_disk(1); - if (!disk) + xpram_disks[i] = alloc_disk(1); + if (!xpram_disks[i]) + goto out; + xpram_queues[i] = blk_alloc_queue(GFP_KERNEL); + if (!xpram_queues[i]) { + put_disk(xpram_disks[i]); goto out; - xpram_disks[i] = disk; + } + blk_queue_make_request(xpram_queues[i], xpram_make_request); + blk_queue_hardsect_size(xpram_queues[i], 4096); } /* @@ -352,18 +357,6 @@ static int __init xpram_setup_blkdev(void) goto out; /* - * Assign the other needed values: make request function, sizes and - * hardsect size. All the minor devices feature the same value. - */ - xpram_queue = blk_alloc_queue(GFP_KERNEL); - if (!xpram_queue) { - rc = -ENOMEM; - goto out_unreg; - } - blk_queue_make_request(xpram_queue, xpram_make_request); - blk_queue_hardsect_size(xpram_queue, 4096); - - /* * Setup device structures. */ offset = 0; @@ -377,18 +370,18 @@ static int __init xpram_setup_blkdev(void) disk->first_minor = i; disk->fops = &xpram_devops; disk->private_data = &xpram_devices[i]; - disk->queue = xpram_queue; + disk->queue = xpram_queues[i]; sprintf(disk->disk_name, "slram%d", i); set_capacity(disk, xpram_sizes[i] << 1); add_disk(disk); } return 0; -out_unreg: - unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME); out: - while (i--) + while (i--) { + blk_cleanup_queue(xpram_queues[i]); put_disk(xpram_disks[i]); + } return rc; } @@ -400,10 +393,10 @@ static void __exit xpram_exit(void) int i; for (i = 0; i < xpram_devs; i++) { del_gendisk(xpram_disks[i]); + blk_cleanup_queue(xpram_queues[i]); put_disk(xpram_disks[i]); } unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME); - blk_cleanup_queue(xpram_queue); } static int __init xpram_init(void) diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index d3ec9b55ab35..9ab06e0dad40 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -21,6 +21,7 @@ #include <linux/console.h> #include <linux/interrupt.h> #include <linux/err.h> +#include <linux/reboot.h> #include <linux/slab.h> #include <linux/bootmem.h> @@ -88,7 +89,6 @@ struct raw3215_info { int count; /* number of bytes in output buffer */ int written; /* number of bytes in write requests */ struct tty_struct *tty; /* pointer to tty structure if present */ - struct tasklet_struct tasklet; struct raw3215_req *queued_read; /* pointer to queued read requests */ struct raw3215_req *queued_write;/* pointer to queued write requests */ wait_queue_head_t empty_wait; /* wait queue for flushing */ @@ -341,21 +341,14 @@ raw3215_try_io(struct raw3215_info *raw) } /* - * The bottom half handler routine for 3215 devices. It tries to start - * the next IO and wakes up processes waiting on the tty. + * Try to start the next IO and wake up processes waiting on the tty. */ -static void -raw3215_tasklet(void *data) +static void raw3215_next_io(struct raw3215_info *raw) { - struct raw3215_info *raw; struct tty_struct *tty; - unsigned long flags; - raw = (struct raw3215_info *) data; - spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags); raw3215_mk_write_req(raw); raw3215_try_io(raw); - spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags); tty = raw->tty; if (tty != NULL && RAW3215_BUFFER_SIZE - raw->count >= RAW3215_MIN_SPACE) { @@ -380,7 +373,7 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) cstat = irb->scsw.cmd.cstat; dstat = irb->scsw.cmd.dstat; if (cstat != 0) - tasklet_schedule(&raw->tasklet); + raw3215_next_io(raw); if (dstat & 0x01) { /* we got a unit exception */ dstat &= ~0x01; /* we can ignore it */ } @@ -390,7 +383,7 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) break; /* Attention interrupt, someone hit the enter key */ raw3215_mk_read_req(raw); - tasklet_schedule(&raw->tasklet); + raw3215_next_io(raw); break; case 0x08: case 0x0C: @@ -448,7 +441,7 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) raw->queued_read == NULL) { wake_up_interruptible(&raw->empty_wait); } - tasklet_schedule(&raw->tasklet); + raw3215_next_io(raw); break; default: /* Strange interrupt, I'll do my best to clean up */ @@ -460,7 +453,7 @@ raw3215_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) raw->flags &= ~RAW3215_WORKING; raw3215_free_req(req); } - tasklet_schedule(&raw->tasklet); + raw3215_next_io(raw); } return; } @@ -674,9 +667,6 @@ raw3215_probe (struct ccw_device *cdev) kfree(raw); return -ENOMEM; } - tasklet_init(&raw->tasklet, - (void (*)(unsigned long)) raw3215_tasklet, - (unsigned long) raw); init_waitqueue_head(&raw->empty_wait); cdev->dev.driver_data = raw; @@ -775,11 +765,11 @@ static struct tty_driver *con3215_device(struct console *c, int *index) } /* - * panic() calls console_unblank before the system enters a - * disabled, endless loop. + * panic() calls con3215_flush through a panic_notifier + * before the system enters a disabled, endless loop. */ static void -con3215_unblank(void) +con3215_flush(void) { struct raw3215_info *raw; unsigned long flags; @@ -790,6 +780,23 @@ con3215_unblank(void) spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags); } +static int con3215_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + con3215_flush(); + return NOTIFY_OK; +} + +static struct notifier_block on_panic_nb = { + .notifier_call = con3215_notify, + .priority = 0, +}; + +static struct notifier_block on_reboot_nb = { + .notifier_call = con3215_notify, + .priority = 0, +}; + /* * The console structure for the 3215 console */ @@ -797,7 +804,6 @@ static struct console con3215 = { .name = "ttyS", .write = con3215_write, .device = con3215_device, - .unblank = con3215_unblank, .flags = CON_PRINTBUFFER, }; @@ -846,9 +852,6 @@ con3215_init(void) cdev->handler = raw3215_irq; raw->flags |= RAW3215_FIXED; - tasklet_init(&raw->tasklet, - (void (*)(unsigned long)) raw3215_tasklet, - (unsigned long) raw); init_waitqueue_head(&raw->empty_wait); /* Request the console irq */ @@ -859,6 +862,8 @@ con3215_init(void) raw3215[0] = NULL; return -ENODEV; } + atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); + register_reboot_notifier(&on_reboot_nb); register_console(&con3215); return 0; } diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 3c07974886ed..d028d2ee83dd 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -15,6 +15,7 @@ #include <linux/list.h> #include <linux/types.h> #include <linux/err.h> +#include <linux/reboot.h> #include <asm/ccwdev.h> #include <asm/cio.h> @@ -528,11 +529,11 @@ con3270_wait_write(struct con3270 *cp) } /* - * panic() calls console_unblank before the system enters a - * disabled, endless loop. + * panic() calls con3270_flush through a panic_notifier + * before the system enters a disabled, endless loop. */ static void -con3270_unblank(void) +con3270_flush(void) { struct con3270 *cp; unsigned long flags; @@ -554,6 +555,23 @@ con3270_unblank(void) spin_unlock_irqrestore(&cp->view.lock, flags); } +static int con3270_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + con3270_flush(); + return NOTIFY_OK; +} + +static struct notifier_block on_panic_nb = { + .notifier_call = con3270_notify, + .priority = 0, +}; + +static struct notifier_block on_reboot_nb = { + .notifier_call = con3270_notify, + .priority = 0, +}; + /* * The console structure for the 3270 console */ @@ -561,7 +579,6 @@ static struct console con3270 = { .name = "tty3270", .write = con3270_write, .device = con3270_device, - .unblank = con3270_unblank, .flags = CON_PRINTBUFFER, }; @@ -623,6 +640,8 @@ con3270_init(void) condev->cline->len = 0; con3270_create_status(condev); condev->input = alloc_string(&condev->freemem, 80); + atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); + register_reboot_notifier(&on_reboot_nb); register_console(&con3270); return 0; } diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index c3dee900a5c8..1792b2c0130e 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -1171,7 +1171,7 @@ static int raw3270_create_attributes(struct raw3270 *rp) rp->clttydev = device_create_drvdata(class3270, &rp->cdev->dev, MKDEV(IBM_TTY3270_MAJOR, rp->minor), NULL, - "tty%s", rp->cdev->dev.bus_id); + "tty%s", dev_name(&rp->cdev->dev)); if (IS_ERR(rp->clttydev)) { rc = PTR_ERR(rp->clttydev); goto out_ttydev; @@ -1180,7 +1180,7 @@ static int raw3270_create_attributes(struct raw3270 *rp) rp->cltubdev = device_create_drvdata(class3270, &rp->cdev->dev, MKDEV(IBM_FS3270_MAJOR, rp->minor), NULL, - "tub%s", rp->cdev->dev.bus_id); + "tub%s", dev_name(&rp->cdev->dev)); if (!IS_ERR(rp->cltubdev)) goto out; diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c index 7e619c534bf4..9a25c4bd1421 100644 --- a/drivers/s390/char/sclp_con.c +++ b/drivers/s390/char/sclp_con.c @@ -16,6 +16,7 @@ #include <linux/bootmem.h> #include <linux/termios.h> #include <linux/err.h> +#include <linux/reboot.h> #include "sclp.h" #include "sclp_rw.h" @@ -172,7 +173,7 @@ sclp_console_device(struct console *c, int *index) * will be flushed to the SCLP. */ static void -sclp_console_unblank(void) +sclp_console_flush(void) { unsigned long flags; @@ -188,6 +189,24 @@ sclp_console_unblank(void) spin_unlock_irqrestore(&sclp_con_lock, flags); } +static int +sclp_console_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + sclp_console_flush(); + return NOTIFY_OK; +} + +static struct notifier_block on_panic_nb = { + .notifier_call = sclp_console_notify, + .priority = 1, +}; + +static struct notifier_block on_reboot_nb = { + .notifier_call = sclp_console_notify, + .priority = 1, +}; + /* * used to register the SCLP console to the kernel and to * give printk necessary information @@ -197,7 +216,6 @@ static struct console sclp_console = .name = sclp_console_name, .write = sclp_console_write, .device = sclp_console_device, - .unblank = sclp_console_unblank, .flags = CON_PRINTBUFFER, .index = 0 /* ttyS0 */ }; @@ -241,6 +259,8 @@ sclp_console_init(void) sclp_con_width_htab = 8; /* enable printk-access to this driver */ + atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); + register_reboot_notifier(&on_reboot_nb); register_console(&sclp_console); return 0; } diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index ad51738c4261..9854f19f5e62 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -24,6 +24,8 @@ #include <linux/bootmem.h> #include <linux/interrupt.h> #include <linux/init.h> +#include <linux/reboot.h> + #include <asm/uaccess.h> #include "sclp.h" @@ -743,24 +745,30 @@ sclp_vt220_con_device(struct console *c, int *index) return sclp_vt220_driver; } -/* - * This routine is called from panic when the kernel is going to give up. - * We have to make sure that all buffers will be flushed to the SCLP. - * Note that this function may be called from within an interrupt context. - */ -static void -sclp_vt220_con_unblank(void) +static int +sclp_vt220_notify(struct notifier_block *self, + unsigned long event, void *data) { __sclp_vt220_flush_buffer(); + return NOTIFY_OK; } +static struct notifier_block on_panic_nb = { + .notifier_call = sclp_vt220_notify, + .priority = 1, +}; + +static struct notifier_block on_reboot_nb = { + .notifier_call = sclp_vt220_notify, + .priority = 1, +}; + /* Structure needed to register with printk */ static struct console sclp_vt220_console = { .name = SCLP_VT220_CONSOLE_NAME, .write = sclp_vt220_con_write, .device = sclp_vt220_con_device, - .unblank = sclp_vt220_con_unblank, .flags = CON_PRINTBUFFER, .index = SCLP_VT220_CONSOLE_INDEX }; @@ -776,6 +784,8 @@ sclp_vt220_con_init(void) if (rc) return rc; /* Attach linux console */ + atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb); + register_reboot_notifier(&on_reboot_nb); register_console(&sclp_vt220_console); return 0; } diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 839987618ffd..4005c44a404c 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -910,7 +910,7 @@ tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, * should proceed with the new tape... this * should probably be done in user space! */ - PRINT_WARN("(%s): Swap Tape Device!\n", device->cdev->dev.bus_id); + PRINT_WARN("(%s): Swap Tape Device!\n", dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EIO); } @@ -1003,40 +1003,43 @@ tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) /* Exception Message */ switch (sense->fmt.f70.emc) { case 0x02: - PRINT_WARN("(%s): Data degraded\n", device->cdev->dev.bus_id); + PRINT_WARN("(%s): Data degraded\n", + dev_name(&device->cdev->dev)); break; case 0x03: PRINT_WARN("(%s): Data degraded in partion %i\n", - device->cdev->dev.bus_id, sense->fmt.f70.mp); + dev_name(&device->cdev->dev), sense->fmt.f70.mp); break; case 0x04: - PRINT_WARN("(%s): Medium degraded\n", device->cdev->dev.bus_id); + PRINT_WARN("(%s): Medium degraded\n", + dev_name(&device->cdev->dev)); break; case 0x05: PRINT_WARN("(%s): Medium degraded in partition %i\n", - device->cdev->dev.bus_id, sense->fmt.f70.mp); + dev_name(&device->cdev->dev), sense->fmt.f70.mp); break; case 0x06: - PRINT_WARN("(%s): Block 0 Error\n", device->cdev->dev.bus_id); + PRINT_WARN("(%s): Block 0 Error\n", + dev_name(&device->cdev->dev)); break; case 0x07: PRINT_WARN("(%s): Medium Exception 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f70.md); + dev_name(&device->cdev->dev), sense->fmt.f70.md); break; default: PRINT_WARN("(%s): MIM ExMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f70.emc); + dev_name(&device->cdev->dev), sense->fmt.f70.emc); break; } /* Service Message */ switch (sense->fmt.f70.smc) { case 0x02: PRINT_WARN("(%s): Reference Media maintenance procedure %i\n", - device->cdev->dev.bus_id, sense->fmt.f70.md); + dev_name(&device->cdev->dev), sense->fmt.f70.md); break; default: PRINT_WARN("(%s): MIM ServiceMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f70.smc); + dev_name(&device->cdev->dev), sense->fmt.f70.smc); break; } } @@ -1054,101 +1057,101 @@ tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) switch (sense->fmt.f71.emc) { case 0x01: PRINT_WARN("(%s): Effect of failure is unknown\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x02: PRINT_WARN("(%s): CU Exception - no performance impact\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x03: PRINT_WARN("(%s): CU Exception on channel interface 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x04: PRINT_WARN("(%s): CU Exception on device path 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x05: PRINT_WARN("(%s): CU Exception on library path 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x06: PRINT_WARN("(%s): CU Exception on node 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x07: PRINT_WARN("(%s): CU Exception on partition 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; default: PRINT_WARN("(%s): SIM ExMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.emc); + dev_name(&device->cdev->dev), sense->fmt.f71.emc); } /* Service Message */ switch (sense->fmt.f71.smc) { case 0x01: PRINT_WARN("(%s): Repair impact is unknown\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x02: PRINT_WARN("(%s): Repair will not impact cu performance\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x03: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable node " "0x%x on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable nodes " "(0x%x-0x%x) on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x04: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable cannel path " "0x%x on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable cannel paths " "(0x%x-0x%x) on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x05: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable device path " "0x%x on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable device paths " "(0x%x-0x%x) on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x06: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable library path " "0x%x on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable library paths " "(0x%x-0x%x) on CU\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x07: PRINT_WARN("(%s): Repair will disable access to CU\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; default: PRINT_WARN("(%s): SIM ServiceMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.smc); + dev_name(&device->cdev->dev), sense->fmt.f71.smc); } } @@ -1165,104 +1168,104 @@ tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) switch (sense->fmt.f71.emc) { case 0x01: PRINT_WARN("(%s): Effect of failure is unknown\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x02: PRINT_WARN("(%s): DV Exception - no performance impact\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x03: PRINT_WARN("(%s): DV Exception on channel interface 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x04: PRINT_WARN("(%s): DV Exception on loader 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x05: PRINT_WARN("(%s): DV Exception on message display 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.md[0]); + dev_name(&device->cdev->dev), sense->fmt.f71.md[0]); break; case 0x06: PRINT_WARN("(%s): DV Exception in tape path\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x07: PRINT_WARN("(%s): DV Exception in drive\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; default: PRINT_WARN("(%s): DSIM ExMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.emc); + dev_name(&device->cdev->dev), sense->fmt.f71.emc); } /* Service Message */ switch (sense->fmt.f71.smc) { case 0x01: PRINT_WARN("(%s): Repair impact is unknown\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x02: PRINT_WARN("(%s): Repair will not impact device performance\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x03: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable channel path " "0x%x on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable channel path " "(0x%x-0x%x) on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x04: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable interface 0x%x " "on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable interfaces " "(0x%x-0x%x) on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x05: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable loader 0x%x " "on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable loader " "(0x%x-0x%x) on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x07: PRINT_WARN("(%s): Repair will disable access to DV\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case 0x08: if (sense->fmt.f71.mdf == 0) PRINT_WARN("(%s): Repair will disable message " "display 0x%x on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1]); else PRINT_WARN("(%s): Repair will disable message " "displays (0x%x-0x%x) on DV\n", - device->cdev->dev.bus_id, + dev_name(&device->cdev->dev), sense->fmt.f71.md[1], sense->fmt.f71.md[2]); break; case 0x09: - PRINT_WARN("(%s): Clean DV\n", device->cdev->dev.bus_id); + PRINT_WARN("(%s): Clean DV\n", dev_name(&device->cdev->dev)); break; default: PRINT_WARN("(%s): DSIM ServiceMsg: 0x%02x\n", - device->cdev->dev.bus_id, sense->fmt.f71.smc); + dev_name(&device->cdev->dev), sense->fmt.f71.smc); } } @@ -1279,18 +1282,18 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) return; if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { if (tape_3590_msg[sense->mc] != NULL) - PRINT_WARN("(%s): %s\n", device->cdev->dev.bus_id, + PRINT_WARN("(%s): %s\n", dev_name(&device->cdev->dev), tape_3590_msg[sense->mc]); else { PRINT_WARN("(%s): Message Code 0x%x\n", - device->cdev->dev.bus_id, sense->mc); + dev_name(&device->cdev->dev), sense->mc); } return; } if (sense->mc == 0xf0) { /* Standard Media Information Message */ PRINT_WARN("(%s): MIM SEV=%i, MC=%02x, ES=%x/%x, " - "RC=%02x-%04x-%02x\n", device->cdev->dev.bus_id, + "RC=%02x-%04x-%02x\n", dev_name(&device->cdev->dev), sense->fmt.f70.sev, sense->mc, sense->fmt.f70.emc, sense->fmt.f70.smc, sense->fmt.f70.refcode, sense->fmt.f70.mid, @@ -1302,7 +1305,7 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) /* Standard I/O Subsystem Service Information Message */ PRINT_WARN("(%s): IOSIM SEV=%i, DEVTYPE=3590/%02x, " "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", - device->cdev->dev.bus_id, sense->fmt.f71.sev, + dev_name(&device->cdev->dev), sense->fmt.f71.sev, device->cdev->id.dev_model, sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, sense->fmt.f71.refcode1, @@ -1314,7 +1317,7 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) /* Standard Device Service Information Message */ PRINT_WARN("(%s): DEVSIM SEV=%i, DEVTYPE=3590/%02x, " "MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", - device->cdev->dev.bus_id, sense->fmt.f71.sev, + dev_name(&device->cdev->dev), sense->fmt.f71.sev, device->cdev->id.dev_model, sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, sense->fmt.f71.refcode1, @@ -1327,7 +1330,7 @@ tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) return; } PRINT_WARN("(%s): Device Message(%x)\n", - device->cdev->dev.bus_id, sense->mc); + dev_name(&device->cdev->dev), sense->mc); } static int tape_3590_crypt_error(struct tape_device *device, @@ -1336,10 +1339,11 @@ static int tape_3590_crypt_error(struct tape_device *device, u8 cu_rc, ekm_rc1; u16 ekm_rc2; u32 drv_rc; - char *bus_id, *sense; + const char *bus_id; + char *sense; sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; - bus_id = device->cdev->dev.bus_id; + bus_id = dev_name(&device->cdev->dev); cu_rc = sense[0]; drv_rc = *((u32*) &sense[5]) & 0xffffff; ekm_rc1 = sense[9]; @@ -1440,7 +1444,7 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request, * "device intervention" is not very meaningfull */ PRINT_WARN("(%s): Tape operation when medium not loaded\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); tape_med_state_set(device, MS_UNLOADED); tape_3590_schedule_work(device, TO_CRYPT_OFF); return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); @@ -1487,18 +1491,18 @@ tape_3590_unit_check(struct tape_device *device, struct tape_request *request, case 0x6020: PRINT_WARN("(%s): Cartridge of wrong type ?\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); case 0x8011: PRINT_WARN("(%s): Another host has reserved the tape device\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EPERM); case 0x8013: PRINT_WARN("(%s): Another host has privileged access to the " - "tape device\n", device->cdev->dev.bus_id); + "tape device\n", dev_name(&device->cdev->dev)); PRINT_WARN("(%s): To solve the problem unload the current " - "cartridge!\n", device->cdev->dev.bus_id); + "cartridge!\n", dev_name(&device->cdev->dev)); return tape_3590_erp_basic(device, request, irb, -EPERM); default: return tape_3590_erp_basic(device, request, irb, -EIO); diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c index 95da72bc17e8..a25b8bf54f41 100644 --- a/drivers/s390/char/tape_block.c +++ b/drivers/s390/char/tape_block.c @@ -278,7 +278,7 @@ tapeblock_cleanup_device(struct tape_device *device) if (!device->blk_data.disk) { PRINT_ERR("(%s): No gendisk to clean up!\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); goto cleanup_queue; } diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index 181a5441af16..d7073dbf825c 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -215,12 +215,12 @@ tape_med_state_set(struct tape_device *device, enum tape_medium_state newstate) case MS_UNLOADED: device->tape_generic_status |= GMT_DR_OPEN(~0); PRINT_INFO("(%s): Tape is unloaded\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; case MS_LOADED: device->tape_generic_status &= ~GMT_DR_OPEN(~0); PRINT_INFO("(%s): Tape has been mounted\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); break; default: // print nothing @@ -415,7 +415,7 @@ tape_generic_offline(struct tape_device *device) device->cdev_id); PRINT_WARN("(%s): Set offline failed " "- drive in use.\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); spin_unlock_irq(get_ccwdev_lock(device->cdev)); return -EBUSY; } @@ -538,7 +538,8 @@ tape_generic_probe(struct ccw_device *cdev) ret = sysfs_create_group(&cdev->dev.kobj, &tape_attr_group); if (ret) { tape_put_device(device); - PRINT_ERR("probe failed for tape device %s\n", cdev->dev.bus_id); + PRINT_ERR("probe failed for tape device %s\n", + dev_name(&cdev->dev)); return ret; } cdev->dev.driver_data = device; @@ -546,7 +547,7 @@ tape_generic_probe(struct ccw_device *cdev) device->cdev = cdev; ccw_device_get_id(cdev, &dev_id); device->cdev_id = devid_to_int(&dev_id); - PRINT_INFO("tape device %s found\n", cdev->dev.bus_id); + PRINT_INFO("tape device %s found\n", dev_name(&cdev->dev)); return ret; } @@ -616,7 +617,7 @@ tape_generic_remove(struct ccw_device *cdev) device->cdev_id); PRINT_WARN("(%s): Drive in use vanished - " "expect trouble!\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); PRINT_WARN("State was %i\n", device->tape_state); tape_state_set(device, TS_NOT_OPER); __tape_discard_requests(device); @@ -840,7 +841,7 @@ tape_dump_sense(struct tape_device* device, struct tape_request *request, PRINT_INFO("-------------------------------------------------\n"); PRINT_INFO("DSTAT : %02x CSTAT: %02x CPA: %04x\n", irb->scsw.cmd.dstat, irb->scsw.cmd.cstat, irb->scsw.cmd.cpa); - PRINT_INFO("DEVICE: %s\n", device->cdev->dev.bus_id); + PRINT_INFO("DEVICE: %s\n", dev_name(&device->cdev->dev)); if (request != NULL) PRINT_INFO("OP : %s\n", tape_op_verbose[request->op]); @@ -1051,7 +1052,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) device = (struct tape_device *) cdev->dev.driver_data; if (device == NULL) { PRINT_ERR("could not get device structure for %s " - "in interrupt\n", cdev->dev.bus_id); + "in interrupt\n", dev_name(&cdev->dev)); return; } request = (struct tape_request *) intparm; @@ -1064,13 +1065,13 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) switch (PTR_ERR(irb)) { case -ETIMEDOUT: PRINT_WARN("(%s): Request timed out\n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); case -EIO: __tape_end_request(device, request, -EIO); break; default: PRINT_ERR("(%s): Unexpected i/o error %li\n", - cdev->dev.bus_id, + dev_name(&cdev->dev), PTR_ERR(irb)); } return; diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c index e7c888c14e71..8a376af926a7 100644 --- a/drivers/s390/char/tape_proc.c +++ b/drivers/s390/char/tape_proc.c @@ -52,7 +52,7 @@ static int tape_proc_show(struct seq_file *m, void *v) return 0; spin_lock_irq(get_ccwdev_lock(device->cdev)); seq_printf(m, "%d\t", (int) n); - seq_printf(m, "%-10.10s ", device->cdev->dev.bus_id); + seq_printf(m, "%-10.10s ", dev_name(&device->cdev->dev)); seq_printf(m, "%04X/", device->cdev->id.cu_type); seq_printf(m, "%02X\t", device->cdev->id.cu_model); seq_printf(m, "%04X/", device->cdev->id.dev_type); diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c index cc8fd781ee22..5bd573d144d6 100644 --- a/drivers/s390/char/tape_std.c +++ b/drivers/s390/char/tape_std.c @@ -47,7 +47,7 @@ tape_std_assign_timeout(unsigned long data) rc = tape_cancel_io(device, request); if(rc) PRINT_ERR("(%s): Assign timeout: Cancel failed with rc = %i\n", - device->cdev->dev.bus_id, rc); + dev_name(&device->cdev->dev), rc); } @@ -83,7 +83,7 @@ tape_std_assign(struct tape_device *device) if (rc != 0) { PRINT_WARN("%s: assign failed - device might be busy\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); DBF_EVENT(3, "%08x: assign failed - device might be busy\n", device->cdev_id); } else { @@ -106,7 +106,7 @@ tape_std_unassign (struct tape_device *device) DBF_EVENT(3, "(%08x): Can't unassign device\n", device->cdev_id); PRINT_WARN("(%s): Can't unassign device - device gone\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); return -EIO; } @@ -120,7 +120,8 @@ tape_std_unassign (struct tape_device *device) if ((rc = tape_do_io(device, request)) != 0) { DBF_EVENT(3, "%08x: Unassign failed\n", device->cdev_id); - PRINT_WARN("%s: Unassign failed\n", device->cdev->dev.bus_id); + PRINT_WARN("%s: Unassign failed\n", + dev_name(&device->cdev->dev)); } else { DBF_EVENT(3, "%08x: Tape unassigned\n", device->cdev_id); } @@ -634,10 +635,10 @@ tape_std_mtcompression(struct tape_device *device, int mt_count) DBF_EXCEPTION(6, "xcom parm\n"); if (*device->modeset_byte & 0x08) PRINT_INFO("(%s) Compression is currently on\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); else PRINT_INFO("(%s) Compression is currently off\n", - device->cdev->dev.bus_id); + dev_name(&device->cdev->dev)); PRINT_INFO("Use 1 to switch compression on, 0 to " "switch it off\n"); return -EINVAL; diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c index c31faefa2b3b..42173cc34610 100644 --- a/drivers/s390/char/vmlogrdr.c +++ b/drivers/s390/char/vmlogrdr.c @@ -724,8 +724,7 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) dev = kzalloc(sizeof(struct device), GFP_KERNEL); if (dev) { - snprintf(dev->bus_id, BUS_ID_SIZE, "%s", - priv->internal_name); + dev_set_name(dev, priv->internal_name); dev->bus = &iucv_bus; dev->parent = iucv_root; dev->driver = &vmlogrdr_driver; @@ -751,7 +750,7 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) priv->class_device = device_create_drvdata(vmlogrdr_class, dev, MKDEV(vmlogrdr_major, priv->minor_num), - priv, "%s", dev->bus_id); + priv, "%s", dev_name(dev)); if (IS_ERR(priv->class_device)) { ret = PTR_ERR(priv->class_device); priv->class_device=NULL; diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c index c1f352b84868..6fdfa5ddeca8 100644 --- a/drivers/s390/char/vmur.c +++ b/drivers/s390/char/vmur.c @@ -886,11 +886,11 @@ static int ur_set_online(struct ccw_device *cdev) goto fail_free_cdev; if (urd->cdev->id.cu_type == READER_PUNCH_DEVTYPE) { if (urd->class == DEV_CLASS_UR_I) - sprintf(node_id, "vmrdr-%s", cdev->dev.bus_id); + sprintf(node_id, "vmrdr-%s", dev_name(&cdev->dev)); if (urd->class == DEV_CLASS_UR_O) - sprintf(node_id, "vmpun-%s", cdev->dev.bus_id); + sprintf(node_id, "vmpun-%s", dev_name(&cdev->dev)); } else if (urd->cdev->id.cu_type == PRINTER_DEVTYPE) { - sprintf(node_id, "vmprt-%s", cdev->dev.bus_id); + sprintf(node_id, "vmprt-%s", dev_name(&cdev->dev)); } else { rc = -EOPNOTSUPP; goto fail_free_cdev; diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index 0bfcbbe375c4..2f547b840ef0 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -24,6 +24,7 @@ #include "cio.h" #include "cio_debug.h" #include "css.h" +#include "device.h" /* * "Blacklisting" of certain devices: @@ -191,9 +192,9 @@ static int blacklist_parse_parameters(char *str, range_action action, rc = blacklist_range(ra, from_ssid, to_ssid, from, to, msgtrigger); if (rc) - totalrc = 1; + totalrc = -EINVAL; } else - totalrc = 1; + totalrc = -EINVAL; } return totalrc; @@ -240,8 +241,10 @@ static int blacklist_parse_proc_parameters(char *buf) rc = blacklist_parse_parameters(buf, free, 0); else if (strcmp("add", parm) == 0) rc = blacklist_parse_parameters(buf, add, 0); + else if (strcmp("purge", parm) == 0) + return ccw_purge_blacklisted(); else - return 1; + return -EINVAL; css_schedule_reprobe(); @@ -353,7 +356,7 @@ cio_ignore_write(struct file *file, const char __user *user_buf, } ret = blacklist_parse_proc_parameters(buf); if (ret) - rc = -EINVAL; + rc = ret; else rc = user_len; diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index e0ce65fca4e7..3ac2c2019f5e 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -113,7 +113,8 @@ ccwgroup_release (struct device *dev) for (i = 0; i < gdev->count; i++) { if (gdev->cdev[i]) { - dev_set_drvdata(&gdev->cdev[i]->dev, NULL); + if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev) + dev_set_drvdata(&gdev->cdev[i]->dev, NULL); put_device(&gdev->cdev[i]->dev); } } @@ -268,8 +269,7 @@ int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, goto error; } - snprintf (gdev->dev.bus_id, BUS_ID_SIZE, "%s", - gdev->cdev[0]->dev.bus_id); + dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev)); rc = device_add(&gdev->dev); if (rc) @@ -296,6 +296,7 @@ error: if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev) dev_set_drvdata(&gdev->cdev[i]->dev, NULL); put_device(&gdev->cdev[i]->dev); + gdev->cdev[i] = NULL; } mutex_unlock(&gdev->reg_mutex); put_device(&gdev->dev); diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index f1216cf6fa8f..1246f61a5338 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -393,8 +393,7 @@ int chp_new(struct chp_id chpid) chp->state = 1; chp->dev.parent = &channel_subsystems[chpid.cssid]->device; chp->dev.release = chp_release; - snprintf(chp->dev.bus_id, BUS_ID_SIZE, "chp%x.%02x", chpid.cssid, - chpid.id); + dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id); /* Obtain channel path description and fill it in. */ ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc); diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index 91ca87aa9f97..f49f0e502b8d 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -261,7 +261,7 @@ static int chsc_examine_irb(struct chsc_request *request) { int backed_up; - if (!scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND) + if (!(scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND)) return -EIO; backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK; request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK; diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 5954b905e3ca..3db2c386546f 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -114,6 +114,7 @@ cio_tpi(void) struct tpi_info *tpi_info; struct subchannel *sch; struct irb *irb; + int irq_context; tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; if (tpi (NULL) != 1) @@ -126,7 +127,9 @@ cio_tpi(void) sch = (struct subchannel *)(unsigned long)tpi_info->intparm; if (!sch) return 1; - local_bh_disable(); + irq_context = in_interrupt(); + if (!irq_context) + local_bh_disable(); irq_enter (); spin_lock(sch->lock); memcpy(&sch->schib.scsw, &irb->scsw, sizeof(union scsw)); @@ -134,7 +137,8 @@ cio_tpi(void) sch->driver->irq(sch); spin_unlock(sch->lock); irq_exit (); - _local_bh_enable(); + if (!irq_context) + _local_bh_enable(); return 1; } @@ -153,7 +157,7 @@ cio_start_handle_notoper(struct subchannel *sch, __u8 lpm) CIO_MSG_EVENT(2, "cio_start: 'not oper' status for " "subchannel 0.%x.%04x!\n", sch->schid.ssid, sch->schid.sch_no); - sprintf(dbf_text, "no%s", sch->dev.bus_id); + sprintf(dbf_text, "no%s", dev_name(&sch->dev)); CIO_TRACE_EVENT(0, dbf_text); CIO_HEX_EVENT(0, &sch->schib, sizeof (struct schib)); @@ -171,9 +175,10 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ union orb *orb; CIO_TRACE_EVENT(4, "stIO"); - CIO_TRACE_EVENT(4, sch->dev.bus_id); + CIO_TRACE_EVENT(4, dev_name(&sch->dev)); orb = &to_io_private(sch)->orb; + memset(orb, 0, sizeof(union orb)); /* sch is always under 2G. */ orb->cmd.intparm = (u32)(addr_t)sch; orb->cmd.fmt = 1; @@ -231,7 +236,7 @@ cio_resume (struct subchannel *sch) int ccode; CIO_TRACE_EVENT (4, "resIO"); - CIO_TRACE_EVENT (4, sch->dev.bus_id); + CIO_TRACE_EVENT(4, dev_name(&sch->dev)); ccode = rsch (sch->schid); @@ -268,7 +273,7 @@ cio_halt(struct subchannel *sch) return -ENODEV; CIO_TRACE_EVENT (2, "haltIO"); - CIO_TRACE_EVENT (2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* * Issue "Halt subchannel" and process condition code @@ -303,7 +308,7 @@ cio_clear(struct subchannel *sch) return -ENODEV; CIO_TRACE_EVENT (2, "clearIO"); - CIO_TRACE_EVENT (2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* * Issue "Clear subchannel" and process condition code @@ -339,7 +344,7 @@ cio_cancel (struct subchannel *sch) return -ENODEV; CIO_TRACE_EVENT (2, "cancelIO"); - CIO_TRACE_EVENT (2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); ccode = xsch (sch->schid); @@ -403,7 +408,7 @@ int cio_enable_subchannel(struct subchannel *sch, u32 intparm) int ret; CIO_TRACE_EVENT (2, "ensch"); - CIO_TRACE_EVENT (2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) return -EINVAL; @@ -453,7 +458,7 @@ int cio_disable_subchannel(struct subchannel *sch) int ret; CIO_TRACE_EVENT (2, "dissch"); - CIO_TRACE_EVENT (2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) return 0; @@ -570,8 +575,10 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid) } mutex_init(&sch->reg_mutex); /* Set a name for the subchannel */ - snprintf (sch->dev.bus_id, BUS_ID_SIZE, "0.%x.%04x", schid.ssid, - schid.sch_no); + 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) @@ -676,6 +683,7 @@ 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; @@ -826,6 +834,12 @@ 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) @@ -845,19 +859,6 @@ __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) return -EBUSY; /* uhm... */ } -/* we can't use the normal udelay here, since it enables external interrupts */ - -static void udelay_reset(unsigned long usecs) -{ - uint64_t start_cc, end_cc; - - asm volatile ("STCK %0" : "=m" (start_cc)); - do { - cpu_relax(); - asm volatile ("STCK %0" : "=m" (end_cc)); - } while (((end_cc - start_cc)/4096) < usecs); -} - static int __clear_io_subchannel_easy(struct subchannel_id schid) { @@ -873,7 +874,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid) if (schid_equal(&ti.schid, &schid)) return 0; } - udelay_reset(100); + udelay_simple(100); } return -EBUSY; } @@ -881,7 +882,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid) static void __clear_chsc_subchannel_easy(void) { /* It seems we can only wait for a bit here :/ */ - udelay_reset(100); + udelay_simple(100); } static int pgm_check_occured; @@ -891,7 +892,7 @@ static void cio_reset_pgm_check_handler(void) pgm_check_occured = 1; } -static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr) +static int stsch_reset(struct subchannel_id schid, struct schib *addr) { int rc; diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 3b236d20e835..0fb24784e925 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -117,11 +117,15 @@ 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 1261e1a9e8cd..76bbb1e74c29 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -698,7 +698,7 @@ static int __init setup_css(int nr) return -ENOMEM; css->pseudo_subchannel->dev.parent = &css->device; css->pseudo_subchannel->dev.release = css_subchannel_release; - sprintf(css->pseudo_subchannel->dev.bus_id, "defunct"); + dev_set_name(&css->pseudo_subchannel->dev, "defunct"); ret = cio_create_sch_lock(css->pseudo_subchannel); if (ret) { kfree(css->pseudo_subchannel); @@ -707,7 +707,7 @@ static int __init setup_css(int nr) mutex_init(&css->mutex); css->valid = 1; css->cssid = nr; - sprintf(css->device.bus_id, "css%x", nr); + dev_set_name(&css->device, "css%x", nr); css->device.release = channel_subsystem_release; tod_high = (u32) (get_clock() >> 32); css_generate_pgid(css, tod_high); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 28221030b886..4e78c82194b4 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -31,6 +31,7 @@ #include "device.h" #include "ioasm.h" #include "io_sch.h" +#include "blacklist.h" static struct timer_list recovery_timer; static DEFINE_SPINLOCK(recovery_lock); @@ -296,36 +297,33 @@ static void ccw_device_unregister(struct ccw_device *cdev) device_del(&cdev->dev); } -static void ccw_device_remove_orphan_cb(struct device *dev) +static void ccw_device_remove_orphan_cb(struct work_struct *work) { - struct ccw_device *cdev = to_ccwdev(dev); + struct ccw_device_private *priv; + struct ccw_device *cdev; + 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); } -static void ccw_device_remove_sch_cb(struct device *dev) -{ - struct subchannel *sch; - - sch = to_subchannel(dev); - css_sch_device_unregister(sch); - /* Reset intparm to zeroes. */ - sch->schib.pmcw.intparm = 0; - cio_modify(sch); - put_device(&sch->dev); -} +static void ccw_device_call_sch_unregister(struct work_struct *work); static void ccw_device_remove_disconnected(struct ccw_device *cdev) { unsigned long flags; - int rc; /* * 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. @@ -335,23 +333,13 @@ ccw_device_remove_disconnected(struct ccw_device *cdev) spin_lock_irqsave(cdev->ccwlock, flags); cdev->private->state = DEV_STATE_NOT_OPER; spin_unlock_irqrestore(cdev->ccwlock, flags); - rc = device_schedule_callback(&cdev->dev, - ccw_device_remove_orphan_cb); - if (rc) - CIO_MSG_EVENT(0, "Couldn't unregister orphan " - "0.%x.%04x\n", - cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); - return; - } - /* Deregister subchannel, which will kill the ccw device. */ - rc = device_schedule_callback(cdev->dev.parent, - ccw_device_remove_sch_cb); - if (rc) - CIO_MSG_EVENT(0, "Couldn't unregister disconnected device " - "0.%x.%04x\n", - cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); + PREPARE_WORK(&cdev->private->kick_work, + ccw_device_remove_orphan_cb); + } else + /* Deregister subchannel, which will kill the ccw device. */ + PREPARE_WORK(&cdev->private->kick_work, + ccw_device_call_sch_unregister); + queue_work(slow_path_wq, &cdev->private->kick_work); } /** @@ -970,12 +958,17 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) priv = container_of(work, struct ccw_device_private, kick_work); cdev = priv->cdev; + /* Get subchannel reference for local processing. */ + if (!get_device(cdev->dev.parent)) + return; sch = to_subchannel(cdev->dev.parent); css_sch_device_unregister(sch); /* Reset intparm to zeroes. */ sch->schib.pmcw.intparm = 0; cio_modify(sch); + /* Release cdev reference for workqueue processing.*/ put_device(&cdev->dev); + /* Release subchannel reference for local processing. */ put_device(&sch->dev); } @@ -1001,6 +994,8 @@ io_subchannel_recog_done(struct ccw_device *cdev) PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister); queue_work(slow_path_wq, &cdev->private->kick_work); + /* Release subchannel reference for asynchronous recognition. */ + put_device(&sch->dev); if (atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); break; @@ -1040,8 +1035,11 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) init_timer(&priv->timer); /* Set an initial name for the device. */ - snprintf (cdev->dev.bus_id, BUS_ID_SIZE, "0.%x.%04x", - sch->schid.ssid, sch->schib.pmcw.dev); + 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); @@ -1106,7 +1104,7 @@ static void io_subchannel_irq(struct subchannel *sch) cdev = sch_get_cdev(sch); CIO_TRACE_EVENT(3, "IRQ"); - CIO_TRACE_EVENT(3, sch->dev.bus_id); + CIO_TRACE_EVENT(3, dev_name(&sch->dev)); if (cdev) dev_fsm_event(cdev, DEV_EVENT_INTERRUPT); } @@ -1476,6 +1474,45 @@ static void ccw_device_schedule_recovery(void) spin_unlock_irqrestore(&recovery_lock, flags); } +static int purge_fn(struct device *dev, void *data) +{ + struct ccw_device *cdev = to_ccwdev(dev); + struct ccw_device_private *priv = cdev->private; + int unreg; + + spin_lock_irq(cdev->ccwlock); + unreg = is_blacklisted(priv->dev_id.ssid, priv->dev_id.devno) && + (priv->state == DEV_STATE_OFFLINE); + 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); + PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister); + queue_work(slow_path_wq, &cdev->private->kick_work); + +out: + /* Abort loop in case of pending signal. */ + if (signal_pending(current)) + return -EINTR; + + return 0; +} + +/** + * ccw_purge_blacklisted - purge unused, blacklisted devices + * + * Unregister all ccw devices that are offline and on the blacklist. + */ +int ccw_purge_blacklisted(void) +{ + CIO_MSG_EVENT(2, "ccw: purging blacklisted devices\n"); + bus_for_each_dev(&ccw_bus_type, NULL, NULL, purge_fn); + return 0; +} + static void device_set_disconnected(struct ccw_device *cdev) { if (!cdev) @@ -1492,7 +1529,7 @@ void ccw_device_set_notoper(struct ccw_device *cdev) struct subchannel *sch = to_subchannel(cdev->dev.parent); CIO_TRACE_EVENT(2, "notoper"); - CIO_TRACE_EVENT(2, sch->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&sch->dev)); ccw_device_set_timeout(cdev, 0); cio_disable_subchannel(sch); cdev->private->state = DEV_STATE_NOT_OPER; @@ -1591,6 +1628,7 @@ 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; @@ -1661,6 +1699,14 @@ ccw_device_probe_console(void) console_cdev.online = 1; return &console_cdev; } + + +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 /* @@ -1673,7 +1719,7 @@ __ccwdev_check_busid(struct device *dev, void *id) bus_id = id; - return (strncmp(bus_id, dev->bus_id, BUS_ID_SIZE) == 0); + return (strncmp(bus_id, dev_name(dev), BUS_ID_SIZE) == 0); } diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index 6f5c3f2b3587..104ed669db43 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -86,6 +86,7 @@ int ccw_device_is_orphan(struct ccw_device *); int ccw_device_recognition(struct ccw_device *); int ccw_device_online(struct ccw_device *); int ccw_device_offline(struct ccw_device *); +int ccw_purge_blacklisted(void); /* Function prototypes for device status and basic sense stuff. */ void ccw_device_accumulate_irb(struct ccw_device *, struct irb *); diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 84cc9ea346db..10bc03940fb3 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -52,8 +52,10 @@ static void ccw_timeout_log(struct ccw_device *cdev) printk(KERN_WARNING "cio: orb:\n"); print_hex_dump(KERN_WARNING, "cio: ", DUMP_PREFIX_NONE, 16, 1, orb, sizeof(*orb), 0); - printk(KERN_WARNING "cio: ccw device bus id: %s\n", cdev->dev.bus_id); - printk(KERN_WARNING "cio: subchannel bus id: %s\n", sch->dev.bus_id); + printk(KERN_WARNING "cio: ccw device bus id: %s\n", + dev_name(&cdev->dev)); + printk(KERN_WARNING "cio: subchannel bus id: %s\n", + dev_name(&sch->dev)); printk(KERN_WARNING "cio: subchannel lpm: %02x, opm: %02x, " "vpm: %02x\n", sch->lpm, sch->opm, sch->vpm); diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index ee1a28310fbb..eabcc42d63df 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -498,7 +498,7 @@ ccw_device_stlck(struct ccw_device *cdev) sch = to_subchannel(cdev->dev.parent); CIO_TRACE_EVENT(2, "stl lock"); - CIO_TRACE_EVENT(2, cdev->dev.bus_id); + CIO_TRACE_EVENT(2, dev_name(&cdev->dev)); buf = kmalloc(32*sizeof(char), GFP_DMA|GFP_KERNEL); if (!buf) diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index 3f8f1cf69c76..c4f3e7c9a854 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -123,7 +123,7 @@ struct ccw_device_private { void *cmb_wait; /* deferred cmb enable/disable */ }; -static inline int ssch(struct subchannel_id schid, volatile union orb *addr) +static inline int ssch(struct subchannel_id schid, union orb *addr) { register struct subchannel_id reg1 asm("1") = schid; int ccode = -EIO; @@ -134,7 +134,9 @@ static inline int ssch(struct subchannel_id schid, volatile union orb *addr) " srl %0,28\n" "1:\n" EX_TABLE(0b, 1b) - : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "+d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc", "memory"); return ccode; } @@ -147,7 +149,9 @@ static inline int rsch(struct subchannel_id schid) " rsch\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1) : "cc"); + : "=d" (ccode) + : "d" (reg1) + : "cc", "memory"); return ccode; } @@ -160,7 +164,9 @@ static inline int csch(struct subchannel_id schid) " csch\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1) : "cc"); + : "=d" (ccode) + : "d" (reg1) + : "cc"); return ccode; } @@ -173,7 +179,9 @@ static inline int hsch(struct subchannel_id schid) " hsch\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1) : "cc"); + : "=d" (ccode) + : "d" (reg1) + : "cc"); return ccode; } @@ -186,7 +194,9 @@ static inline int xsch(struct subchannel_id schid) " .insn rre,0xb2760000,%1,0\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1) : "cc"); + : "=d" (ccode) + : "d" (reg1) + : "cc"); return ccode; } diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h index 9fa2ac13ac85..759262792633 100644 --- a/drivers/s390/cio/ioasm.h +++ b/drivers/s390/cio/ioasm.h @@ -23,38 +23,39 @@ struct tpi_info { * Some S390 specific IO instructions as inline */ -static inline int stsch(struct subchannel_id schid, - volatile struct schib *addr) +static inline int stsch(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode; asm volatile( - " stsch 0(%2)\n" + " stsch 0(%3)\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "=d" (ccode), "=m" (*addr) + : "d" (reg1), "a" (addr) + : "cc"); return ccode; } -static inline int stsch_err(struct subchannel_id schid, - volatile struct schib *addr) +static inline int stsch_err(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; asm volatile( - " stsch 0(%2)\n" + " stsch 0(%3)\n" "0: ipm %0\n" " srl %0,28\n" "1:\n" EX_TABLE(0b,1b) - : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "+d" (ccode), "=m" (*addr) + : "d" (reg1), "a" (addr) + : "cc"); return ccode; } -static inline int msch(struct subchannel_id schid, - volatile struct schib *addr) +static inline int msch(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode; @@ -63,12 +64,13 @@ static inline int msch(struct subchannel_id schid, " msch 0(%2)\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "=d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc"); return ccode; } -static inline int msch_err(struct subchannel_id schid, - volatile struct schib *addr) +static inline int msch_err(struct subchannel_id schid, struct schib *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; @@ -79,33 +81,38 @@ static inline int msch_err(struct subchannel_id schid, " srl %0,28\n" "1:\n" EX_TABLE(0b,1b) - : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "+d" (ccode) + : "d" (reg1), "a" (addr), "m" (*addr) + : "cc"); return ccode; } -static inline int tsch(struct subchannel_id schid, - volatile struct irb *addr) +static inline int tsch(struct subchannel_id schid, struct irb *addr) { register struct subchannel_id reg1 asm ("1") = schid; int ccode; asm volatile( - " tsch 0(%2)\n" + " tsch 0(%3)\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + : "=d" (ccode), "=m" (*addr) + : "d" (reg1), "a" (addr) + : "cc"); return ccode; } -static inline int tpi( volatile struct tpi_info *addr) +static inline int tpi(struct tpi_info *addr) { int ccode; asm volatile( - " tpi 0(%1)\n" + " tpi 0(%2)\n" " ipm %0\n" " srl %0,28" - : "=d" (ccode) : "a" (addr), "m" (*addr) : "cc"); + : "=d" (ccode), "=m" (*addr) + : "a" (addr) + : "cc"); return ccode; } diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index c1a70985abfa..e3ea1d5f2810 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -16,6 +16,14 @@ #define QDIO_BUSY_BIT_GIVE_UP 2000000 /* 2 seconds = eternity */ #define QDIO_INPUT_THRESHOLD 500 /* 500 microseconds */ +/* + * if an asynchronous HiperSockets queue runs full, the 10 seconds timer wait + * till next initiative to give transmitted skbs back to the stack is too long. + * Therefore polling is started in case of multicast queue is filled more + * than 50 percent. + */ +#define QDIO_IQDIO_POLL_LVL 65 /* HS multicast queue */ + enum qdio_irq_states { QDIO_IRQ_STATE_INACTIVE, QDIO_IRQ_STATE_ESTABLISHED, @@ -195,6 +203,9 @@ struct qdio_output_q { /* PCIs are enabled for the queue */ int pci_out_enabled; + /* IQDIO: output multiple buffers (enhanced SIGA) */ + int use_enh_siga; + /* timer to check for more outbound work */ struct timer_list timer; }; diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index 337aa3087a78..b5390821434f 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -155,7 +155,7 @@ static int qstat_seq_open(struct inode *inode, struct file *filp) static void get_queue_name(struct qdio_q *q, struct ccw_device *cdev, char *name) { memset(name, 0, sizeof(name)); - sprintf(name, "%s", cdev->dev.bus_id); + sprintf(name, "%s", dev_name(&cdev->dev)); if (q->is_input_q) sprintf(name + strlen(name), "_input"); else diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index e6eabc853422..a50682d2a0fa 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -316,6 +316,9 @@ static inline int qdio_do_siga_output(struct qdio_q *q, unsigned int *busy_bit) unsigned int fc = 0; unsigned long schid; + if (q->u.out.use_enh_siga) { + fc = 3; + } if (!is_qebsm(q)) schid = *((u32 *)&q->irq_ptr->schid); else { @@ -851,6 +854,12 @@ static void __qdio_outbound_processing(struct qdio_q *q) if (queue_type(q) == QDIO_IQDIO_QFMT && !multicast_outbound(q)) return; + if ((queue_type(q) == QDIO_IQDIO_QFMT) && + (atomic_read(&q->nr_buf_used)) > QDIO_IQDIO_POLL_LVL) { + tasklet_schedule(&q->tasklet); + return; + } + if (q->u.out.pci_out_enabled) return; @@ -956,7 +965,7 @@ static void qdio_handle_activate_check(struct ccw_device *cdev, char dbf_text[15]; QDIO_DBF_TEXT2(1, trace, "ick2"); - sprintf(dbf_text, "%s", cdev->dev.bus_id); + sprintf(dbf_text, "%s", dev_name(&cdev->dev)); QDIO_DBF_TEXT2(1, trace, dbf_text); QDIO_DBF_HEX2(0, trace, &intparm, sizeof(int)); QDIO_DBF_HEX2(0, trace, &dstat, sizeof(int)); @@ -1443,6 +1452,8 @@ int qdio_establish(struct qdio_initialize *init_data) } qdio_setup_ssqd_info(irq_ptr); + sprintf(dbf_text, "qDmmwc%2x", irq_ptr->ssqd_desc.mmwc); + QDIO_DBF_TEXT2(0, setup, dbf_text); sprintf(dbf_text, "qib ac%2x", irq_ptr->qib.ac); QDIO_DBF_TEXT2(0, setup, dbf_text); @@ -1615,12 +1626,21 @@ static void handle_outbound(struct qdio_q *q, unsigned int callflags, if (multicast_outbound(q)) qdio_kick_outbound_q(q); else - /* - * One siga-w per buffer required for unicast - * HiperSockets. - */ - while (count--) + if ((q->irq_ptr->ssqd_desc.mmwc > 1) && + (count > 1) && + (count <= q->irq_ptr->ssqd_desc.mmwc)) { + /* exploit enhanced SIGA */ + q->u.out.use_enh_siga = 1; qdio_kick_outbound_q(q); + } else { + /* + * One siga-w per buffer required for unicast + * HiperSockets. + */ + q->u.out.use_enh_siga = 0; + while (count--) + qdio_kick_outbound_q(q); + } goto out; } diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 1679e2f91c94..a0b6b46e7466 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -447,51 +447,36 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, { char s[80]; - sprintf(s, "%s sc:%x ", cdev->dev.bus_id, irq_ptr->schid.sch_no); - + sprintf(s, "qdio: %s ", dev_name(&cdev->dev)); switch (irq_ptr->qib.qfmt) { case QDIO_QETH_QFMT: - sprintf(s + strlen(s), "OSADE "); + sprintf(s + strlen(s), "OSA "); break; case QDIO_ZFCP_QFMT: sprintf(s + strlen(s), "ZFCP "); break; case QDIO_IQDIO_QFMT: - sprintf(s + strlen(s), "HiperSockets "); + sprintf(s + strlen(s), "HS "); break; } - sprintf(s + strlen(s), "using: "); - - if (!is_thinint_irq(irq_ptr)) - sprintf(s + strlen(s), "no"); - sprintf(s + strlen(s), "AdapterInterrupts "); - if (!(irq_ptr->sch_token != 0)) - sprintf(s + strlen(s), "no"); - sprintf(s + strlen(s), "QEBSM "); - if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)) - sprintf(s + strlen(s), "no"); - sprintf(s + strlen(s), "OutboundPCI "); - if (!css_general_characteristics.aif_tdd) - sprintf(s + strlen(s), "no"); - sprintf(s + strlen(s), "TDD\n"); - printk(KERN_INFO "qdio: %s", s); - - memset(s, 0, sizeof(s)); - sprintf(s, "%s SIGA required: ", cdev->dev.bus_id); - if (irq_ptr->siga_flag.input) - sprintf(s + strlen(s), "Read "); - if (irq_ptr->siga_flag.output) - sprintf(s + strlen(s), "Write "); - if (irq_ptr->siga_flag.sync) - sprintf(s + strlen(s), "Sync "); - if (!irq_ptr->siga_flag.no_sync_ti) - sprintf(s + strlen(s), "SyncAI "); - if (!irq_ptr->siga_flag.no_sync_out_ti) - sprintf(s + strlen(s), "SyncOutAI "); - if (!irq_ptr->siga_flag.no_sync_out_pci) - sprintf(s + strlen(s), "SyncOutPCI"); + sprintf(s + strlen(s), "on SC %x using ", irq_ptr->schid.sch_no); + sprintf(s + strlen(s), "AI:%d ", is_thinint_irq(irq_ptr)); + sprintf(s + strlen(s), "QEBSM:%d ", (irq_ptr->sch_token) ? 1 : 0); + sprintf(s + strlen(s), "PCI:%d ", + (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0); + sprintf(s + strlen(s), "TDD:%d ", css_general_characteristics.aif_tdd); + sprintf(s + strlen(s), "SIGA:"); + sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.input) ? "R" : " "); + sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.output) ? "W" : " "); + sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.sync) ? "S" : " "); + sprintf(s + strlen(s), "%s", + (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " "); + sprintf(s + strlen(s), "%s", + (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " "); + sprintf(s + strlen(s), "%s", + (!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " "); sprintf(s + strlen(s), "\n"); - printk(KERN_INFO "qdio: %s", s); + printk(KERN_INFO "%s", s); } int __init qdio_setup_init(void) diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 62b6b55230d0..326db1e827c4 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -892,8 +892,8 @@ static void ap_scan_bus(struct work_struct *unused) ap_dev->device.bus = &ap_bus_type; ap_dev->device.parent = ap_root_device; - snprintf(ap_dev->device.bus_id, BUS_ID_SIZE, "card%02x", - AP_QID_DEVICE(ap_dev->qid)); + dev_set_name(&ap_dev->device, "card%02x", + AP_QID_DEVICE(ap_dev->qid)); ap_dev->device.release = ap_device_release; rc = device_register(&ap_dev->device); if (rc) { diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 292b60da6dc7..ff4a6931bb8e 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -24,6 +24,7 @@ #include <asm/kvm_virtio.h> #include <asm/setup.h> #include <asm/s390_ext.h> +#include <asm/s390_rdev.h> #define VIRTIO_SUBCODE_64 0x0D00 @@ -241,10 +242,7 @@ static struct virtio_config_ops kvm_vq_configspace_ops = { * The root device for the kvm virtio devices. * This makes them appear as /sys/devices/kvm_s390/0,1,2 not /sys/devices/0,1,2. */ -static struct device kvm_root = { - .parent = NULL, - .bus_id = "kvm_s390", -}; +static struct device *kvm_root; /* * adds a new device and register it with virtio @@ -261,7 +259,7 @@ static void add_kvm_device(struct kvm_device_desc *d, unsigned int offset) return; } - kdev->vdev.dev.parent = &kvm_root; + kdev->vdev.dev.parent = kvm_root; kdev->vdev.id.device = d->type; kdev->vdev.config = &kvm_vq_configspace_ops; kdev->desc = d; @@ -317,15 +315,16 @@ static int __init kvm_devices_init(void) if (!MACHINE_IS_KVM) return -ENODEV; - rc = device_register(&kvm_root); - if (rc) { + kvm_root = s390_root_dev_register("kvm_s390"); + if (IS_ERR(kvm_root)) { + rc = PTR_ERR(kvm_root); printk(KERN_ERR "Could not register kvm_s390 root device"); return rc; } rc = vmem_add_mapping(PFN_PHYS(max_pfn), PAGE_SIZE); if (rc) { - device_unregister(&kvm_root); + s390_root_dev_unregister(kvm_root); return rc; } diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c index e10ac9ab2d44..8f83fc994f50 100644 --- a/drivers/s390/net/claw.c +++ b/drivers/s390/net/claw.c @@ -299,7 +299,7 @@ claw_probe(struct ccwgroup_device *cgdev) probe_error(cgdev); put_device(&cgdev->dev); printk(KERN_WARNING "add_files failed %s %s Exit Line %d \n", - cgdev->cdev[0]->dev.bus_id,__func__,__LINE__); + dev_name(&cgdev->cdev[0]->dev), __func__, __LINE__); CLAW_DBF_TEXT_(2, setup, "probex%d", rc); return rc; } @@ -584,7 +584,7 @@ claw_irq_handler(struct ccw_device *cdev, if (!cdev->dev.driver_data) { printk(KERN_WARNING "claw: unsolicited interrupt for device:" "%s received c-%02x d-%02x\n", - cdev->dev.bus_id, irb->scsw.cmd.cstat, + dev_name(&cdev->dev), irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); CLAW_DBF_TEXT(2, trace, "badirq"); return; @@ -598,7 +598,7 @@ claw_irq_handler(struct ccw_device *cdev, p_ch = &privptr->channel[WRITE]; else { printk(KERN_WARNING "claw: Can't determine channel for " - "interrupt, device %s\n", cdev->dev.bus_id); + "interrupt, device %s\n", dev_name(&cdev->dev)); CLAW_DBF_TEXT(2, trace, "badchan"); return; } @@ -662,7 +662,7 @@ claw_irq_handler(struct ccw_device *cdev, printk(KERN_WARNING "claw: unsolicited " "interrupt for device:" "%s received c-%02x d-%02x\n", - cdev->dev.bus_id, + dev_name(&cdev->dev), irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); return; @@ -1136,19 +1136,20 @@ ccw_check_return_code(struct ccw_device *cdev, int return_code) break; case -ENODEV: printk(KERN_EMERG "%s: Missing device called " - "for IO ENODEV\n", cdev->dev.bus_id); + "for IO ENODEV\n", dev_name(&cdev->dev)); break; case -EIO: printk(KERN_EMERG "%s: Status pending... EIO \n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); break; case -EINVAL: printk(KERN_EMERG "%s: Invalid Dev State EINVAL \n", - cdev->dev.bus_id); + dev_name(&cdev->dev)); break; default: printk(KERN_EMERG "%s: Unknown error in " - "Do_IO %d\n",cdev->dev.bus_id, return_code); + "Do_IO %d\n", dev_name(&cdev->dev), + return_code); } } CLAW_DBF_TEXT(4, trace, "ccwret"); @@ -2848,11 +2849,11 @@ add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr) struct chbk *p_ch; struct ccw_dev_id dev_id; - CLAW_DBF_TEXT_(2, setup, "%s", cdev->dev.bus_id); + CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cdev->dev)); privptr->channel[i].flag = i+1; /* Read is 1 Write is 2 */ p_ch = &privptr->channel[i]; p_ch->cdev = cdev; - snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", cdev->dev.bus_id); + snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", dev_name(&cdev->dev)); ccw_device_get_id(cdev, &dev_id); p_ch->devno = dev_id.devno; if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) { @@ -2879,7 +2880,8 @@ claw_new_device(struct ccwgroup_device *cgdev) int ret; struct ccw_dev_id dev_id; - printk(KERN_INFO "claw: add for %s\n",cgdev->cdev[READ]->dev.bus_id); + printk(KERN_INFO "claw: add for %s\n", + dev_name(&cgdev->cdev[READ]->dev)); CLAW_DBF_TEXT(2, setup, "new_dev"); privptr = cgdev->dev.driver_data; cgdev->cdev[READ]->dev.driver_data = privptr; @@ -2903,14 +2905,16 @@ claw_new_device(struct ccwgroup_device *cgdev) if (ret != 0) { printk(KERN_WARNING "claw: ccw_device_set_online %s READ failed " - "with ret = %d\n",cgdev->cdev[READ]->dev.bus_id,ret); + "with ret = %d\n", dev_name(&cgdev->cdev[READ]->dev), + ret); goto out; } ret = ccw_device_set_online(cgdev->cdev[WRITE]); if (ret != 0) { printk(KERN_WARNING "claw: ccw_device_set_online %s WRITE failed " - "with ret = %d\n",cgdev->cdev[WRITE]->dev.bus_id, ret); + "with ret = %d\n", dev_name(&cgdev->cdev[WRITE]->dev) + ret); goto out; } dev = alloc_netdev(0,"claw%d",claw_init_netdevice); @@ -2986,7 +2990,7 @@ claw_shutdown_device(struct ccwgroup_device *cgdev) struct net_device *ndev; int ret; - CLAW_DBF_TEXT_(2, setup, "%s", cgdev->dev.bus_id); + CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); priv = cgdev->dev.driver_data; if (!priv) return -ENODEV; @@ -3016,11 +3020,11 @@ claw_remove_device(struct ccwgroup_device *cgdev) struct claw_privbk *priv; BUG_ON(!cgdev); - CLAW_DBF_TEXT_(2, setup, "%s", cgdev->dev.bus_id); + CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); priv = cgdev->dev.driver_data; BUG_ON(!priv); printk(KERN_INFO "claw: %s() called %s will be removed.\n", - __func__,cgdev->cdev[0]->dev.bus_id); + __func__, dev_name(&cgdev->cdev[0]->dev)); if (cgdev->state == CCWGROUP_ONLINE) claw_shutdown_device(cgdev); claw_remove_files(&cgdev->dev); diff --git a/drivers/s390/net/claw.h b/drivers/s390/net/claw.h index 1a89d989f348..005072c420d3 100644 --- a/drivers/s390/net/claw.h +++ b/drivers/s390/net/claw.h @@ -85,7 +85,7 @@ #define CLAW_MAX_DEV 256 /* max claw devices */ #define MAX_NAME_LEN 8 /* host name, adapter name length */ #define CLAW_FRAME_SIZE 4096 -#define CLAW_ID_SIZE BUS_ID_SIZE+3 +#define CLAW_ID_SIZE 20+3 /* state machine codes used in claw_irq_handler */ diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c index b11fec24c7d2..a4e29836a2aa 100644 --- a/drivers/s390/net/ctcm_main.c +++ b/drivers/s390/net/ctcm_main.c @@ -277,18 +277,18 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb) CTCM_DBF_TEXT_(ERROR, CTC_DBF_WARN, "irb error %ld on device %s\n", - PTR_ERR(irb), cdev->dev.bus_id); + PTR_ERR(irb), dev_name(&cdev->dev)); switch (PTR_ERR(irb)) { case -EIO: - ctcm_pr_warn("i/o-error on device %s\n", cdev->dev.bus_id); + ctcm_pr_warn("i/o-error on device %s\n", dev_name(&cdev->dev)); break; case -ETIMEDOUT: - ctcm_pr_warn("timeout on device %s\n", cdev->dev.bus_id); + ctcm_pr_warn("timeout on device %s\n", dev_name(&cdev->dev)); break; default: ctcm_pr_warn("unknown error %ld on device %s\n", - PTR_ERR(irb), cdev->dev.bus_id); + PTR_ERR(irb), dev_name(&cdev->dev)); } return PTR_ERR(irb); } @@ -1182,7 +1182,7 @@ static void ctcm_irq_handler(struct ccw_device *cdev, int dstat; CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG, - "Enter %s(%s)", CTCM_FUNTAIL, &cdev->dev.bus_id); + "Enter %s(%s)", CTCM_FUNTAIL, dev_name(&cdev->dev)); if (ctcm_check_irb_error(cdev, irb)) return; @@ -1208,14 +1208,14 @@ static void ctcm_irq_handler(struct ccw_device *cdev, ch = priv->channel[WRITE]; else { ctcm_pr_err("ctcm: Can't determine channel for interrupt, " - "device %s\n", cdev->dev.bus_id); + "device %s\n", dev_name(&cdev->dev)); return; } dev = ch->netdev; if (dev == NULL) { ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n", - __func__, cdev->dev.bus_id, ch); + __func__, dev_name(&cdev->dev), ch); return; } @@ -1329,7 +1329,7 @@ static int add_channel(struct ccw_device *cdev, enum channel_types type, CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO, "%s(%s), type %d, proto %d", - __func__, cdev->dev.bus_id, type, priv->protocol); + __func__, dev_name(&cdev->dev), type, priv->protocol); ch = kzalloc(sizeof(struct channel), GFP_KERNEL); if (ch == NULL) @@ -1358,7 +1358,7 @@ static int add_channel(struct ccw_device *cdev, enum channel_types type, goto nomem_return; ch->cdev = cdev; - snprintf(ch->id, CTCM_ID_SIZE, "ch-%s", cdev->dev.bus_id); + snprintf(ch->id, CTCM_ID_SIZE, "ch-%s", dev_name(&cdev->dev)); ch->type = type; /** @@ -1518,8 +1518,8 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev) type = get_channel_type(&cdev0->id); - snprintf(read_id, CTCM_ID_SIZE, "ch-%s", cdev0->dev.bus_id); - snprintf(write_id, CTCM_ID_SIZE, "ch-%s", cdev1->dev.bus_id); + snprintf(read_id, CTCM_ID_SIZE, "ch-%s", dev_name(&cdev0->dev)); + snprintf(write_id, CTCM_ID_SIZE, "ch-%s", dev_name(&cdev1->dev)); ret = add_channel(cdev0, type, priv); if (ret) diff --git a/drivers/s390/net/ctcm_main.h b/drivers/s390/net/ctcm_main.h index 8e10ee86a5ee..d77cce3fe4d4 100644 --- a/drivers/s390/net/ctcm_main.h +++ b/drivers/s390/net/ctcm_main.h @@ -104,7 +104,7 @@ #define READ 0 #define WRITE 1 -#define CTCM_ID_SIZE BUS_ID_SIZE+3 +#define CTCM_ID_SIZE 20+3 struct ctcm_profile { unsigned long maxmulti; diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c index 9bcfa04d863b..0825be87e5a0 100644 --- a/drivers/s390/net/lcs.c +++ b/drivers/s390/net/lcs.c @@ -492,7 +492,7 @@ lcs_start_channel(struct lcs_channel *channel) unsigned long flags; int rc; - LCS_DBF_TEXT_(4,trace,"ssch%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace,"ssch%s", dev_name(&channel->ccwdev->dev)); spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); rc = ccw_device_start(channel->ccwdev, channel->ccws + channel->io_idx, 0, 0, @@ -501,7 +501,8 @@ lcs_start_channel(struct lcs_channel *channel) channel->state = LCS_CH_STATE_RUNNING; spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); if (rc) { - LCS_DBF_TEXT_(4,trace,"essh%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4,trace,"essh%s", + dev_name(&channel->ccwdev->dev)); PRINT_ERR("Error in starting channel, rc=%d!\n", rc); } return rc; @@ -514,12 +515,13 @@ lcs_clear_channel(struct lcs_channel *channel) int rc; LCS_DBF_TEXT(4,trace,"clearch"); - LCS_DBF_TEXT_(4,trace,"%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace, "%s", dev_name(&channel->ccwdev->dev)); spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); rc = ccw_device_clear(channel->ccwdev, (addr_t) channel); spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); if (rc) { - LCS_DBF_TEXT_(4,trace,"ecsc%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace, "ecsc%s", + dev_name(&channel->ccwdev->dev)); return rc; } wait_event(channel->wait_q, (channel->state == LCS_CH_STATE_CLEARED)); @@ -540,13 +542,14 @@ lcs_stop_channel(struct lcs_channel *channel) if (channel->state == LCS_CH_STATE_STOPPED) return 0; LCS_DBF_TEXT(4,trace,"haltsch"); - LCS_DBF_TEXT_(4,trace,"%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace, "%s", dev_name(&channel->ccwdev->dev)); channel->state = LCS_CH_STATE_INIT; spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); rc = ccw_device_halt(channel->ccwdev, (addr_t) channel); spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); if (rc) { - LCS_DBF_TEXT_(4,trace,"ehsc%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace, "ehsc%s", + dev_name(&channel->ccwdev->dev)); return rc; } /* Asynchronous halt initialted. Wait for its completion. */ @@ -632,10 +635,11 @@ __lcs_resume_channel(struct lcs_channel *channel) return 0; if (channel->ccws[channel->io_idx].flags & CCW_FLAG_SUSPEND) return 0; - LCS_DBF_TEXT_(5, trace, "rsch%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(5, trace, "rsch%s", dev_name(&channel->ccwdev->dev)); rc = ccw_device_resume(channel->ccwdev); if (rc) { - LCS_DBF_TEXT_(4, trace, "ersc%s", channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(4, trace, "ersc%s", + dev_name(&channel->ccwdev->dev)); PRINT_ERR("Error in lcs_resume_channel: rc=%d\n",rc); } else channel->state = LCS_CH_STATE_RUNNING; @@ -1302,18 +1306,18 @@ lcs_check_irb_error(struct ccw_device *cdev, struct irb *irb) switch (PTR_ERR(irb)) { case -EIO: - PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id); + PRINT_WARN("i/o-error on device %s\n", dev_name(&cdev->dev)); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT_(2, trace, " rc%d", -EIO); break; case -ETIMEDOUT: - PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id); + PRINT_WARN("timeout on device %s\n", dev_name(&cdev->dev)); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT_(2, trace, " rc%d", -ETIMEDOUT); break; default: PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb), - cdev->dev.bus_id); + dev_name(&cdev->dev)); LCS_DBF_TEXT(2, trace, "ckirberr"); LCS_DBF_TEXT(2, trace, " rc???"); } @@ -1390,7 +1394,7 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) cstat = irb->scsw.cmd.cstat; dstat = irb->scsw.cmd.dstat; - LCS_DBF_TEXT_(5, trace, "Rint%s",cdev->dev.bus_id); + LCS_DBF_TEXT_(5, trace, "Rint%s", dev_name(&cdev->dev)); LCS_DBF_TEXT_(5, trace, "%4x%4x", irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); LCS_DBF_TEXT_(5, trace, "%4x%4x", irb->scsw.cmd.fctl, @@ -1400,7 +1404,7 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb) rc = lcs_get_problem(cdev, irb); if (rc || (dstat & DEV_STAT_UNIT_EXCEP)) { PRINT_WARN("check on device %s, dstat=0x%X, cstat=0x%X \n", - cdev->dev.bus_id, dstat, cstat); + dev_name(&cdev->dev), dstat, cstat); if (rc) { channel->state = LCS_CH_STATE_ERROR; } @@ -1463,7 +1467,7 @@ lcs_tasklet(unsigned long data) int rc; channel = (struct lcs_channel *) data; - LCS_DBF_TEXT_(5, trace, "tlet%s",channel->ccwdev->dev.bus_id); + LCS_DBF_TEXT_(5, trace, "tlet%s", dev_name(&channel->ccwdev->dev)); /* Check for processed buffers. */ iob = channel->iob; @@ -2244,7 +2248,7 @@ lcs_recovery(void *ptr) return 0; LCS_DBF_TEXT(4, trace, "recover2"); gdev = card->gdev; - PRINT_WARN("Recovery of device %s started...\n", gdev->dev.bus_id); + PRINT_WARN("Recovery of device %s started...\n", dev_name(&gdev->dev)); rc = __lcs_shutdown_device(gdev, 1); rc = lcs_new_device(gdev); if (!rc) diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c index 9242b5acc66b..0fea51e34b57 100644 --- a/drivers/s390/net/netiucv.c +++ b/drivers/s390/net/netiucv.c @@ -1724,7 +1724,7 @@ static int netiucv_register_device(struct net_device *ndev) IUCV_DBF_TEXT(trace, 3, __func__); if (dev) { - snprintf(dev->bus_id, BUS_ID_SIZE, "net%s", ndev->name); + dev_set_name(dev, "net%s", ndev->name); dev->bus = &iucv_bus; dev->parent = iucv_root; /* diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index bf8a75c92f28..af6d60458513 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -90,11 +90,11 @@ struct qeth_dbf_info { #define CARD_RDEV(card) card->read.ccwdev #define CARD_WDEV(card) card->write.ccwdev #define CARD_DDEV(card) card->data.ccwdev -#define CARD_BUS_ID(card) card->gdev->dev.bus_id -#define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id -#define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id -#define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id -#define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id +#define CARD_BUS_ID(card) dev_name(&card->gdev->dev) +#define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev) +#define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev) +#define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev) +#define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev) /** * card stuff diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index c7ab1b864516..7de410d5be4a 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -745,7 +745,7 @@ static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { QETH_DBF_TEXT(TRACE, 2, "CGENCHK"); PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ", - cdev->dev.bus_id, dstat, cstat); + dev_name(&cdev->dev), dstat, cstat); print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, 16, 1, irb, 64, 1); return 1; @@ -760,7 +760,7 @@ static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) if (sense[SENSE_COMMAND_REJECT_BYTE] & SENSE_COMMAND_REJECT_FLAG) { QETH_DBF_TEXT(TRACE, 2, "CMDREJi"); - return 0; + return 1; } if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { QETH_DBF_TEXT(TRACE, 2, "AFFE"); @@ -784,12 +784,12 @@ static long __qeth_check_irb_error(struct ccw_device *cdev, switch (PTR_ERR(irb)) { case -EIO: - PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id); + PRINT_WARN("i/o-error on device %s\n", dev_name(&cdev->dev)); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO); break; case -ETIMEDOUT: - PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id); + PRINT_WARN("timeout on device %s\n", dev_name(&cdev->dev)); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT_(TRACE, 2, " rc%d", -ETIMEDOUT); if (intparm == QETH_RCD_PARM) { @@ -803,7 +803,7 @@ static long __qeth_check_irb_error(struct ccw_device *cdev, break; default: PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb), - cdev->dev.bus_id); + dev_name(&cdev->dev)); QETH_DBF_TEXT(TRACE, 2, "ckirberr"); QETH_DBF_TEXT(TRACE, 2, " rc???"); } @@ -884,6 +884,7 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, } rc = qeth_get_problem(cdev, irb); if (rc) { + qeth_clear_ipacmd_list(card); qeth_schedule_recovery(card); goto out; } @@ -4081,7 +4082,7 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev) if (!get_device(dev)) return -ENODEV; - QETH_DBF_TEXT_(SETUP, 2, "%s", gdev->dev.bus_id); + QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); card = qeth_alloc_card(); if (!card) { @@ -4147,6 +4148,7 @@ static void qeth_core_remove_device(struct ccwgroup_device *gdev) unsigned long flags; struct qeth_card *card = dev_get_drvdata(&gdev->dev); + QETH_DBF_TEXT(SETUP, 2, "removedv"); if (card->discipline.ccwgdriver) { card->discipline.ccwgdriver->remove(gdev); qeth_core_free_discipline(card); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 3ac3cc1e03cc..955ba7a31b90 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -395,7 +395,8 @@ static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) } if (card->state == CARD_STATE_SOFTSETUP) { qeth_l2_process_vlans(card, 1); - qeth_l2_del_all_mc(card); + if (!card->use_hard_stop) + qeth_l2_del_all_mc(card); qeth_clear_ipacmd_list(card); card->state = CARD_STATE_HARDSETUP; } @@ -559,7 +560,8 @@ static int qeth_l2_request_initial_mac(struct qeth_card *card) "device %s: x%x\n", CARD_BUS_ID(card), rc); } - if (card->info.guestlan) { + if ((card->info.type == QETH_CARD_TYPE_IQD) || + (card->info.guestlan)) { rc = qeth_setadpparms_change_macaddr(card); if (rc) { QETH_DBF_MESSAGE(2, "couldn't get MAC address on " @@ -825,7 +827,6 @@ static int qeth_l2_open(struct net_device *dev) } card->data.state = CH_STATE_UP; card->state = CARD_STATE_UP; - card->dev->flags |= IFF_UP; netif_start_queue(dev); if (!card->lan_online && netif_carrier_ok(dev)) @@ -840,7 +841,6 @@ static int qeth_l2_stop(struct net_device *dev) QETH_DBF_TEXT(TRACE, 4, "qethstop"); netif_tx_disable(dev); - card->dev->flags &= ~IFF_UP; if (card->state == CARD_STATE_UP) card->state = CARD_STATE_SOFTSETUP; return 0; @@ -1137,9 +1137,13 @@ static int qeth_l2_recover(void *ptr) if (!rc) PRINT_INFO("Device %s successfully recovered!\n", CARD_BUS_ID(card)); - else + else { + rtnl_lock(); + dev_close(card->dev); + rtnl_unlock(); PRINT_INFO("Device %s could not be recovered!\n", CARD_BUS_ID(card)); + } return 0; } diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index dd72c3c20165..99547dea44de 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2795,7 +2795,6 @@ static int qeth_l3_open(struct net_device *dev) return -ENODEV; card->data.state = CH_STATE_UP; card->state = CARD_STATE_UP; - card->dev->flags |= IFF_UP; netif_start_queue(dev); if (!card->lan_online && netif_carrier_ok(dev)) @@ -2809,7 +2808,6 @@ static int qeth_l3_stop(struct net_device *dev) QETH_DBF_TEXT(TRACE, 4, "qethstop"); netif_tx_disable(dev); - card->dev->flags &= ~IFF_UP; if (card->state == CARD_STATE_UP) card->state = CARD_STATE_SOFTSETUP; return 0; @@ -3218,9 +3216,13 @@ static int qeth_l3_recover(void *ptr) if (!rc) PRINT_INFO("Device %s successfully recovered!\n", CARD_BUS_ID(card)); - else + else { + rtnl_lock(); + dev_close(card->dev); + rtnl_unlock(); PRINT_INFO("Device %s could not be recovered!\n", CARD_BUS_ID(card)); + } return 0; } diff --git a/drivers/s390/s390_rdev.c b/drivers/s390/s390_rdev.c index 3c7145d9f9a1..64371c05a3b3 100644 --- a/drivers/s390/s390_rdev.c +++ b/drivers/s390/s390_rdev.c @@ -30,7 +30,7 @@ s390_root_dev_register(const char *name) dev = kzalloc(sizeof(struct device), GFP_KERNEL); if (!dev) return ERR_PTR(-ENOMEM); - strncpy(dev->bus_id, name, min(strlen(name), (size_t)BUS_ID_SIZE)); + dev_set_name(dev, name); dev->release = s390_root_dev_release; ret = device_register(dev); if (ret) { diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 90abfd06ed55..3b56220fb900 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -88,11 +88,13 @@ static int __init zfcp_device_setup(char *devstr) strncpy(zfcp_data.init_busid, token, BUS_ID_SIZE); token = strsep(&str, ","); - if (!token || strict_strtoull(token, 0, &zfcp_data.init_wwpn)) + if (!token || strict_strtoull(token, 0, + (unsigned long long *) &zfcp_data.init_wwpn)) goto err_out; token = strsep(&str, ","); - if (!token || strict_strtoull(token, 0, &zfcp_data.init_fcp_lun)) + if (!token || strict_strtoull(token, 0, + (unsigned long long *) &zfcp_data.init_fcp_lun)) goto err_out; kfree(str); @@ -100,24 +102,10 @@ static int __init zfcp_device_setup(char *devstr) err_out: kfree(str); - pr_err("zfcp: Parse error for device parameter string %s, " - "device not attached.\n", devstr); + pr_err("zfcp: %s is not a valid SCSI device\n", devstr); return 0; } -static struct zfcp_adapter *zfcp_get_adapter_by_busid(char *bus_id) -{ - struct zfcp_adapter *adapter; - - list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list) - if ((strncmp(bus_id, adapter->ccw_device->dev.bus_id, - BUS_ID_SIZE) == 0) && - !(atomic_read(&adapter->status) & - ZFCP_STATUS_COMMON_REMOVE)) - return adapter; - return NULL; -} - static void __init zfcp_init_device_configure(void) { struct zfcp_adapter *adapter; @@ -141,7 +129,12 @@ static void __init zfcp_init_device_configure(void) goto out_unit; up(&zfcp_data.config_sema); ccw_device_set_online(adapter->ccw_device); + zfcp_erp_wait(adapter); + wait_event(adapter->erp_done_wqh, + !(atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_SCSI_WORK_PENDING)); + down(&zfcp_data.config_sema); zfcp_unit_put(unit); out_unit: @@ -180,9 +173,9 @@ static int __init zfcp_module_init(void) if (!zfcp_data.gid_pn_cache) goto out_gid_cache; - INIT_LIST_HEAD(&zfcp_data.adapter_list_head); - INIT_LIST_HEAD(&zfcp_data.adapter_remove_lh); + zfcp_data.work_queue = create_singlethread_workqueue("zfcp_wq"); + INIT_LIST_HEAD(&zfcp_data.adapter_list_head); sema_init(&zfcp_data.config_sema, 1); rwlock_init(&zfcp_data.config_lock); @@ -193,13 +186,14 @@ static int __init zfcp_module_init(void) retval = misc_register(&zfcp_cfdc_misc); if (retval) { - pr_err("zfcp: registration of misc device zfcp_cfdc failed\n"); + pr_err("zfcp: Registering the misc device zfcp_cfdc failed\n"); goto out_misc; } retval = zfcp_ccw_register(); if (retval) { - pr_err("zfcp: Registration with common I/O layer failed.\n"); + pr_err("zfcp: The zfcp device driver could not register with " + "the common I/O layer\n"); goto out_ccw_register; } @@ -231,8 +225,7 @@ module_init(zfcp_module_init); * * Returns: pointer to zfcp_unit or NULL */ -struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, - fcp_lun_t fcp_lun) +struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; @@ -251,7 +244,7 @@ struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port, * Returns: pointer to zfcp_port or NULL */ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter, - wwn_t wwpn) + u64 wwpn) { struct zfcp_port *port; @@ -276,7 +269,7 @@ static void zfcp_sysfs_unit_release(struct device *dev) * * Sets up some unit internal structures and creates sysfs entry. */ -struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) +struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) { struct zfcp_unit *unit; @@ -290,7 +283,8 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", fcp_lun); + dev_set_name(&unit->sysfs_device, "0x%016llx", + (unsigned long long) fcp_lun); unit->sysfs_device.parent = &port->sysfs_device; unit->sysfs_device.release = zfcp_sysfs_unit_release; dev_set_drvdata(&unit->sysfs_device, unit); @@ -323,7 +317,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) } zfcp_unit_get(unit); - unit->scsi_lun = scsilun_to_int((struct scsi_lun *)&unit->fcp_lun); write_lock_irq(&zfcp_data.config_lock); list_add_tail(&unit->list, &port->unit_list_head); @@ -332,7 +325,6 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun) write_unlock_irq(&zfcp_data.config_lock); - port->units++; zfcp_port_get(port); return unit; @@ -351,11 +343,10 @@ err_out_free: */ void zfcp_unit_dequeue(struct zfcp_unit *unit) { - zfcp_unit_wait(unit); + wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&unit->list); write_unlock_irq(&zfcp_data.config_lock); - unit->port->units--; zfcp_port_put(unit->port); sysfs_remove_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs); device_unregister(&unit->sysfs_device); @@ -416,11 +407,6 @@ static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter) mempool_destroy(adapter->pool.data_gid_pn); } -static void zfcp_dummy_release(struct device *dev) -{ - return; -} - /** * zfcp_status_read_refill - refill the long running status_read_requests * @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled @@ -450,19 +436,6 @@ static void _zfcp_status_read_scheduler(struct work_struct *work) stat_work)); } -static int zfcp_nameserver_enqueue(struct zfcp_adapter *adapter) -{ - struct zfcp_port *port; - - port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA, - ZFCP_DID_DIRECTORY_SERVICE); - if (IS_ERR(port)) - return PTR_ERR(port); - zfcp_port_put(port); - - return 0; -} - /** * zfcp_adapter_enqueue - enqueue a new adapter to the list * @ccw_device: pointer to the struct cc_device @@ -508,7 +481,6 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) init_waitqueue_head(&adapter->erp_done_wqh); INIT_LIST_HEAD(&adapter->port_list_head); - INIT_LIST_HEAD(&adapter->port_remove_lh); INIT_LIST_HEAD(&adapter->erp_ready_head); INIT_LIST_HEAD(&adapter->erp_running_head); @@ -518,7 +490,7 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) spin_lock_init(&adapter->san_dbf_lock); spin_lock_init(&adapter->scsi_dbf_lock); spin_lock_init(&adapter->rec_dbf_lock); - spin_lock_init(&adapter->req_q.lock); + spin_lock_init(&adapter->req_q_lock); rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->abort_lock); @@ -537,28 +509,15 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) &zfcp_sysfs_adapter_attrs)) goto sysfs_failed; - adapter->generic_services.parent = &adapter->ccw_device->dev; - adapter->generic_services.release = zfcp_dummy_release; - snprintf(adapter->generic_services.bus_id, BUS_ID_SIZE, - "generic_services"); - - if (device_register(&adapter->generic_services)) - goto generic_services_failed; - write_lock_irq(&zfcp_data.config_lock); atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); list_add_tail(&adapter->list, &zfcp_data.adapter_list_head); write_unlock_irq(&zfcp_data.config_lock); - zfcp_data.adapters++; - - zfcp_nameserver_enqueue(adapter); + zfcp_fc_nameserver_init(adapter); return 0; -generic_services_failed: - sysfs_remove_group(&ccw_device->dev.kobj, - &zfcp_sysfs_adapter_attrs); sysfs_failed: zfcp_adapter_debug_unregister(adapter); debug_register_failed: @@ -585,7 +544,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) cancel_work_sync(&adapter->scan_work); cancel_work_sync(&adapter->stat_work); zfcp_adapter_scsi_unregister(adapter); - device_unregister(&adapter->generic_services); sysfs_remove_group(&adapter->ccw_device->dev.kobj, &zfcp_sysfs_adapter_attrs); dev_set_drvdata(&adapter->ccw_device->dev, NULL); @@ -603,9 +561,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter) list_del(&adapter->list); write_unlock_irq(&zfcp_data.config_lock); - /* decrease number of adapters in list */ - zfcp_data.adapters--; - zfcp_qdio_free(adapter); zfcp_free_low_mem_buffers(adapter); @@ -633,21 +588,19 @@ static void zfcp_sysfs_port_release(struct device *dev) * d_id is used to enqueue ports with a well known address like the Directory * Service for nameserver lookup. */ -struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, +struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, u32 status, u32 d_id) { struct zfcp_port *port; int retval; - char *bus_id; port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL); if (!port) return ERR_PTR(-ENOMEM); init_waitqueue_head(&port->remove_wq); - INIT_LIST_HEAD(&port->unit_list_head); - INIT_LIST_HEAD(&port->unit_remove_lh); + INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup); port->adapter = adapter; port->d_id = d_id; @@ -657,34 +610,8 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - if (status & ZFCP_STATUS_PORT_WKA) { - switch (d_id) { - case ZFCP_DID_DIRECTORY_SERVICE: - bus_id = "directory"; - break; - case ZFCP_DID_MANAGEMENT_SERVICE: - bus_id = "management"; - break; - case ZFCP_DID_KEY_DISTRIBUTION_SERVICE: - bus_id = "key_distribution"; - break; - case ZFCP_DID_ALIAS_SERVICE: - bus_id = "alias"; - break; - case ZFCP_DID_TIME_SERVICE: - bus_id = "time"; - break; - default: - kfree(port); - return ERR_PTR(-EINVAL); - } - snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "%s", bus_id); - port->sysfs_device.parent = &adapter->generic_services; - } else { - snprintf(port->sysfs_device.bus_id, - BUS_ID_SIZE, "0x%016llx", wwpn); - port->sysfs_device.parent = &adapter->ccw_device->dev; - } + dev_set_name(&port->sysfs_device, "0x%016llx", wwpn); + port->sysfs_device.parent = &adapter->ccw_device->dev; port->sysfs_device.release = zfcp_sysfs_port_release; dev_set_drvdata(&port->sysfs_device, port); @@ -700,12 +627,8 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, if (device_register(&port->sysfs_device)) goto err_out_free; - if (status & ZFCP_STATUS_PORT_WKA) - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_ns_port_attrs); - else - retval = sysfs_create_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); + retval = sysfs_create_group(&port->sysfs_device.kobj, + &zfcp_sysfs_port_attrs); if (retval) { device_unregister(&port->sysfs_device); @@ -718,10 +641,6 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, list_add_tail(&port->list, &adapter->port_list_head); atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &port->status); - if (d_id == ZFCP_DID_DIRECTORY_SERVICE) - if (!adapter->nameserver_port) - adapter->nameserver_port = port; - adapter->ports++; write_unlock_irq(&zfcp_data.config_lock); @@ -740,21 +659,15 @@ err_out: */ void zfcp_port_dequeue(struct zfcp_port *port) { - zfcp_port_wait(port); + wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); write_lock_irq(&zfcp_data.config_lock); list_del(&port->list); - port->adapter->ports--; write_unlock_irq(&zfcp_data.config_lock); if (port->rport) fc_remote_port_delete(port->rport); port->rport = NULL; zfcp_adapter_put(port->adapter); - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) - sysfs_remove_group(&port->sysfs_device.kobj, - &zfcp_sysfs_ns_port_attrs); - else - sysfs_remove_group(&port->sysfs_device.kobj, - &zfcp_sysfs_port_attrs); + sysfs_remove_group(&port->sysfs_device.kobj, &zfcp_sysfs_port_attrs); device_unregister(&port->sysfs_device); } diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c index 51b6a05f4d12..b04038c74786 100644 --- a/drivers/s390/scsi/zfcp_ccw.c +++ b/drivers/s390/scsi/zfcp_ccw.c @@ -25,7 +25,8 @@ static int zfcp_ccw_probe(struct ccw_device *ccw_device) down(&zfcp_data.config_sema); if (zfcp_adapter_enqueue(ccw_device)) { dev_err(&ccw_device->dev, - "Setup of data structures failed.\n"); + "Setting up data structures for the " + "FCP adapter failed\n"); retval = -EINVAL; } up(&zfcp_data.config_sema); @@ -46,6 +47,8 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) struct zfcp_adapter *adapter; struct zfcp_port *port, *p; struct zfcp_unit *unit, *u; + LIST_HEAD(unit_remove_lh); + LIST_HEAD(port_remove_lh); ccw_device_set_offline(ccw_device); down(&zfcp_data.config_sema); @@ -54,26 +57,26 @@ static void zfcp_ccw_remove(struct ccw_device *ccw_device) write_lock_irq(&zfcp_data.config_lock); list_for_each_entry_safe(port, p, &adapter->port_list_head, list) { list_for_each_entry_safe(unit, u, &port->unit_list_head, list) { - list_move(&unit->list, &port->unit_remove_lh); + list_move(&unit->list, &unit_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); } - list_move(&port->list, &adapter->port_remove_lh); + list_move(&port->list, &port_remove_lh); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); } atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status); write_unlock_irq(&zfcp_data.config_lock); - list_for_each_entry_safe(port, p, &adapter->port_remove_lh, list) { - list_for_each_entry_safe(unit, u, &port->unit_remove_lh, list) { - if (atomic_test_mask(ZFCP_STATUS_UNIT_REGISTERED, - &unit->status)) + list_for_each_entry_safe(port, p, &port_remove_lh, list) { + list_for_each_entry_safe(unit, u, &unit_remove_lh, list) { + if (atomic_read(&unit->status) & + ZFCP_STATUS_UNIT_REGISTERED) scsi_remove_device(unit->device); zfcp_unit_dequeue(unit); } zfcp_port_dequeue(port); } - zfcp_adapter_wait(adapter); + wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); zfcp_adapter_dequeue(adapter); up(&zfcp_data.config_sema); @@ -156,15 +159,18 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event) switch (event) { case CIO_GONE: - dev_warn(&adapter->ccw_device->dev, "device gone\n"); + dev_warn(&adapter->ccw_device->dev, + "The FCP device has been detached\n"); zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL); break; case CIO_NO_PATH: - dev_warn(&adapter->ccw_device->dev, "no path\n"); + dev_warn(&adapter->ccw_device->dev, + "The CHPID for the FCP device is offline\n"); zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL); break; case CIO_OPER: - dev_info(&adapter->ccw_device->dev, "operational again\n"); + dev_info(&adapter->ccw_device->dev, + "The FCP device is operational again\n"); zfcp_erp_modify_adapter_status(adapter, 11, NULL, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET); @@ -220,3 +226,20 @@ int __init zfcp_ccw_register(void) { return ccw_driver_register(&zfcp_ccw_driver); } + +/** + * zfcp_get_adapter_by_busid - find zfcp_adapter struct + * @busid: bus id string of zfcp adapter to find + */ +struct zfcp_adapter *zfcp_get_adapter_by_busid(char *busid) +{ + struct ccw_device *ccw_device; + struct zfcp_adapter *adapter = NULL; + + ccw_device = get_ccwdev_by_busid(&zfcp_ccw_driver, busid); + if (ccw_device) { + adapter = dev_get_drvdata(&ccw_device->dev); + put_device(&ccw_device->dev); + } + return adapter; +} diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index fca48b88fc53..060f5f2352ec 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -318,6 +318,26 @@ void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter, spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); } +/** + * zfcp_hba_dbf_event_berr - trace event for bit error threshold + * @adapter: adapter affected by this QDIO related event + * @req: fsf request + */ +void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter, + struct zfcp_fsf_req *req) +{ + struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf; + struct fsf_status_read_buffer *sr_buf = req->data; + struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; + unsigned long flags; + + spin_lock_irqsave(&adapter->hba_dbf_lock, flags); + memset(r, 0, sizeof(*r)); + strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE); + memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload)); + debug_event(adapter->hba_dbf, 0, r, sizeof(*r)); + spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags); +} static void zfcp_hba_dbf_view_response(char **p, struct zfcp_hba_dbf_record_response *r) { @@ -399,6 +419,30 @@ static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r) zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count); } +static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r) +{ + zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count); + zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count); + zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count); + zfcp_dbf_out(p, "prim_seq_err", "%d", + r->primitive_sequence_error_count); + zfcp_dbf_out(p, "inval_trans_word_err", "%d", + r->invalid_transmission_word_error_count); + zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count); + zfcp_dbf_out(p, "prim_seq_event_to", "%d", + r->primitive_sequence_event_timeout_count); + zfcp_dbf_out(p, "elast_buf_overrun_err", "%d", + r->elastic_buffer_overrun_error_count); + zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d", + r->advertised_receive_b2b_credit); + zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d", + r->current_receive_b2b_credit); + zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d", + r->advertised_transmit_b2b_credit); + zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d", + r->current_transmit_b2b_credit); +} + static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, char *out_buf, const char *in_buf) { @@ -418,6 +462,8 @@ static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view, zfcp_hba_dbf_view_status(&p, &r->u.status); else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0) zfcp_hba_dbf_view_qdio(&p, &r->u.qdio); + else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0) + zfcp_hba_dbf_view_berr(&p, &r->u.berr); p += sprintf(p, "\n"); return p - out_buf; @@ -519,14 +565,14 @@ static const char *zfcp_rec_dbf_ids[] = { [75] = "physical port recovery escalation after failed port " "recovery", [76] = "port recovery escalation after failed unit recovery", - [77] = "recovery opening nameserver port", + [77] = "", [78] = "duplicate request id", [79] = "link down", [80] = "exclusive read-only unit access unsupported", [81] = "shared read-write unit access unsupported", [82] = "incoming rscn", [83] = "incoming wwpn", - [84] = "", + [84] = "wka port handle not valid close port", [85] = "online", [86] = "offline", [87] = "ccw device gone", @@ -570,7 +616,7 @@ static const char *zfcp_rec_dbf_ids[] = { [125] = "need newer zfcp", [126] = "need newer microcode", [127] = "arbitrated loop not supported", - [128] = "unknown topology", + [128] = "", [129] = "qtcb size mismatch", [130] = "unknown fsf status ecd", [131] = "fcp request too big", @@ -829,9 +875,9 @@ void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action) void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; - struct ct_hdr *hdr = zfcp_sg_to_address(ct->req); + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; + struct ct_hdr *hdr = sg_virt(ct->req); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req; unsigned long flags; @@ -842,7 +888,7 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) r->fsf_reqid = (unsigned long)fsf_req; r->fsf_seqno = fsf_req->seq_no; r->s_id = fc_host_port_id(adapter->scsi_host); - r->d_id = port->d_id; + r->d_id = wka_port->d_id; oct->cmd_req_code = hdr->cmd_rsp_code; oct->revision = hdr->revision; oct->gs_type = hdr->gs_type; @@ -863,9 +909,9 @@ void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req) void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) { struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data; - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; - struct ct_hdr *hdr = zfcp_sg_to_address(ct->resp); + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; + struct ct_hdr *hdr = sg_virt(ct->resp); struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf; struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp; unsigned long flags; @@ -875,7 +921,7 @@ void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req) strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE); r->fsf_reqid = (unsigned long)fsf_req; r->fsf_seqno = fsf_req->seq_no; - r->s_id = port->d_id; + r->s_id = wka_port->d_id; r->d_id = fc_host_port_id(adapter->scsi_host); rct->cmd_rsp_code = hdr->cmd_rsp_code; rct->revision = hdr->revision; @@ -922,8 +968,8 @@ void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req) zfcp_san_dbf_event_els("oels", 2, fsf_req, fc_host_port_id(els->adapter->scsi_host), - els->d_id, *(u8 *) zfcp_sg_to_address(els->req), - zfcp_sg_to_address(els->req), els->req->length); + els->d_id, *(u8 *) sg_virt(els->req), + sg_virt(els->req), els->req->length); } /** @@ -936,8 +982,7 @@ void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req) zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id, fc_host_port_id(els->adapter->scsi_host), - *(u8 *)zfcp_sg_to_address(els->req), - zfcp_sg_to_address(els->resp), + *(u8 *)sg_virt(els->req), sg_virt(els->resp), els->resp->length); } diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h index 0ddb18449d11..e8f450801fea 100644 --- a/drivers/s390/scsi/zfcp_dbf.h +++ b/drivers/s390/scsi/zfcp_dbf.h @@ -151,6 +151,7 @@ struct zfcp_hba_dbf_record { struct zfcp_hba_dbf_record_response response; struct zfcp_hba_dbf_record_status status; struct zfcp_hba_dbf_record_qdio qdio; + struct fsf_bit_error_payload berr; } u; } __attribute__ ((packed)); diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 67f45fc62f53..8a13071c444c 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -39,29 +39,6 @@ /********************* GENERAL DEFINES *********************************/ -/** - * zfcp_sg_to_address - determine kernel address from struct scatterlist - * @list: struct scatterlist - * Return: kernel address - */ -static inline void * -zfcp_sg_to_address(struct scatterlist *list) -{ - return sg_virt(list); -} - -/** - * zfcp_address_to_sg - set up struct scatterlist from kernel address - * @address: kernel address - * @list: struct scatterlist - * @size: buffer size - */ -static inline void -zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) -{ - sg_set_buf(list, address, size); -} - #define REQUEST_LIST_SIZE 128 /********************* SCSI SPECIFIC DEFINES *********************************/ @@ -101,11 +78,6 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/ -typedef unsigned long long wwn_t; -typedef unsigned long long fcp_lun_t; -/* data length field may be at variable position in FCP-2 FCP_CMND IU */ -typedef unsigned int fcp_dl_t; - /* timeout for name-server lookup (in seconds) */ #define ZFCP_NS_GID_PN_TIMEOUT 10 @@ -129,7 +101,7 @@ typedef unsigned int fcp_dl_t; /* FCP(-2) FCP_CMND IU */ struct fcp_cmnd_iu { - fcp_lun_t fcp_lun; /* FCP logical unit number */ + u64 fcp_lun; /* FCP logical unit number */ u8 crn; /* command reference number */ u8 reserved0:5; /* reserved */ u8 task_attribute:3; /* task attribute */ @@ -204,7 +176,7 @@ struct fcp_rscn_element { struct fcp_logo { u32 command; u32 nport_did; - wwn_t nport_wwpn; + u64 nport_wwpn; } __attribute__((packed)); /* @@ -218,13 +190,6 @@ struct fcp_logo { #define ZFCP_LS_RSCN 0x61 #define ZFCP_LS_RNID 0x78 -struct zfcp_ls_rjt_par { - u8 action; - u8 reason_code; - u8 reason_expl; - u8 vendor_unique; -} __attribute__ ((packed)); - struct zfcp_ls_adisc { u8 code; u8 field[3]; @@ -234,20 +199,6 @@ struct zfcp_ls_adisc { u32 nport_id; } __attribute__ ((packed)); -struct zfcp_ls_adisc_acc { - u8 code; - u8 field[3]; - u32 hard_nport_id; - u64 wwpn; - u64 wwnn; - u32 nport_id; -} __attribute__ ((packed)); - -struct zfcp_rc_entry { - u8 code; - const char *description; -}; - /* * FC-GS-2 stuff */ @@ -281,9 +232,7 @@ struct zfcp_rc_entry { #define ZFCP_STATUS_COMMON_RUNNING 0x40000000 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000 -#define ZFCP_STATUS_COMMON_OPENING 0x08000000 #define ZFCP_STATUS_COMMON_OPEN 0x04000000 -#define ZFCP_STATUS_COMMON_CLOSING 0x02000000 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000 @@ -291,16 +240,15 @@ struct zfcp_rc_entry { /* adapter status */ #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002 -#define ZFCP_STATUS_ADAPTER_REGISTERED 0x00000004 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 -#define ZFCP_STATUS_ADAPTER_XPORT_OK 0x00000800 /* FC-PH/FC-GS well-known address identifiers for generic services */ +#define ZFCP_DID_WKA 0xFFFFF0 #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA #define ZFCP_DID_TIME_SERVICE 0xFFFFFB #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC @@ -312,29 +260,27 @@ struct zfcp_rc_entry { #define ZFCP_STATUS_PORT_DID_DID 0x00000002 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008 -#define ZFCP_STATUS_PORT_NO_SCSI_ID 0x00000010 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020 -/* for ports with well known addresses */ -#define ZFCP_STATUS_PORT_WKA \ - (ZFCP_STATUS_PORT_NO_WWPN | \ - ZFCP_STATUS_PORT_NO_SCSI_ID) +/* well known address (WKA) port status*/ +enum zfcp_wka_status { + ZFCP_WKA_PORT_OFFLINE, + ZFCP_WKA_PORT_CLOSING, + ZFCP_WKA_PORT_OPENING, + ZFCP_WKA_PORT_ONLINE, +}; /* logical unit status */ -#define ZFCP_STATUS_UNIT_TEMPORARY 0x00000002 #define ZFCP_STATUS_UNIT_SHARED 0x00000004 #define ZFCP_STATUS_UNIT_READONLY 0x00000008 #define ZFCP_STATUS_UNIT_REGISTERED 0x00000010 #define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING 0x00000020 /* FSF request status (this does not have a common part) */ -#define ZFCP_STATUS_FSFREQ_NOT_INIT 0x00000000 -#define ZFCP_STATUS_FSFREQ_POOL 0x00000001 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010 -#define ZFCP_STATUS_FSFREQ_ABORTING 0x00000020 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100 @@ -379,7 +325,7 @@ struct ct_hdr { * a port name is required */ struct ct_iu_gid_pn_req { struct ct_hdr header; - wwn_t wwpn; + u64 wwpn; } __attribute__ ((packed)); /* FS_ACC IU and data unit for GID_PN nameserver request */ @@ -388,11 +334,9 @@ struct ct_iu_gid_pn_resp { u32 d_id; } __attribute__ ((packed)); -typedef void (*zfcp_send_ct_handler_t)(unsigned long); - /** * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct - * @port: port where the request is sent to + * @wka_port: port where the request is sent to * @req: scatter-gather list for request * @resp: scatter-gather list for response * @req_count: number of elements in request scatter-gather list @@ -404,12 +348,12 @@ typedef void (*zfcp_send_ct_handler_t)(unsigned long); * @status: used to pass error status to calling function */ struct zfcp_send_ct { - struct zfcp_port *port; + struct zfcp_wka_port *wka_port; struct scatterlist *req; struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; - zfcp_send_ct_handler_t handler; + void (*handler)(unsigned long); unsigned long handler_data; int timeout; struct completion *completion; @@ -426,8 +370,6 @@ struct zfcp_gid_pn_data { struct zfcp_port *port; }; -typedef void (*zfcp_send_els_handler_t)(unsigned long); - /** * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els * @adapter: adapter where request is sent from @@ -451,22 +393,28 @@ struct zfcp_send_els { struct scatterlist *resp; unsigned int req_count; unsigned int resp_count; - zfcp_send_els_handler_t handler; + void (*handler)(unsigned long); unsigned long handler_data; struct completion *completion; int ls_code; int status; }; +struct zfcp_wka_port { + struct zfcp_adapter *adapter; + wait_queue_head_t completion_wq; + enum zfcp_wka_status status; + atomic_t refcount; + u32 d_id; + u32 handle; + struct mutex mutex; + struct delayed_work work; +}; + struct zfcp_qdio_queue { - struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; /* SBALs */ - u8 first; /* index of next free bfr - in queue (free_count>0) */ - atomic_t count; /* number of free buffers - in queue */ - spinlock_t lock; /* lock for operations on queue */ - int pci_batch; /* SBALs since PCI indication - was last set */ + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; + u8 first; /* index of next free bfr in queue */ + atomic_t count; /* number of free buffers in queue */ }; struct zfcp_erp_action { @@ -475,7 +423,7 @@ struct zfcp_erp_action { struct zfcp_adapter *adapter; /* device which should be recovered */ struct zfcp_port *port; struct zfcp_unit *unit; - volatile u32 status; /* recovery status */ + u32 status; /* recovery status */ u32 step; /* active step of this erp action */ struct zfcp_fsf_req *fsf_req; /* fsf request currently pending for this action */ @@ -506,8 +454,8 @@ struct zfcp_adapter { atomic_t refcount; /* reference count */ wait_queue_head_t remove_wq; /* can be used to wait for refcount drop to zero */ - wwn_t peer_wwnn; /* P2P peer WWNN */ - wwn_t peer_wwpn; /* P2P peer WWPN */ + u64 peer_wwnn; /* P2P peer WWNN */ + u64 peer_wwpn; /* P2P peer WWPN */ u32 peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ u32 hydra_version; /* Hydra version */ @@ -518,13 +466,13 @@ struct zfcp_adapter { u16 timer_ticks; /* time int for a tick */ struct Scsi_Host *scsi_host; /* Pointer to mid-layer */ struct list_head port_list_head; /* remote port list */ - struct list_head port_remove_lh; /* head of ports to be - removed */ - u32 ports; /* number of remote ports */ unsigned long req_no; /* unique FSF req number */ struct list_head *req_list; /* list of pending reqs */ spinlock_t req_list_lock; /* request list lock */ struct zfcp_qdio_queue req_q; /* request queue */ + spinlock_t req_q_lock; /* for operations on queue */ + int req_q_pci_batch; /* SBALs since PCI indication + was last set */ u32 fsf_req_seq_no; /* FSF cmnd seq number */ wait_queue_head_t request_wq; /* can be used to wait for more avaliable SBALs */ @@ -548,7 +496,7 @@ struct zfcp_adapter { actions */ u32 erp_low_mem_count; /* nr of erp actions waiting for memory */ - struct zfcp_port *nameserver_port; /* adapter's nameserver */ + struct zfcp_wka_port nsp; /* adapter's nameserver */ debug_info_t *rec_dbf; debug_info_t *hba_dbf; debug_info_t *san_dbf; /* debug feature areas */ @@ -563,11 +511,11 @@ struct zfcp_adapter { struct zfcp_scsi_dbf_record scsi_dbf_buf; struct zfcp_adapter_mempool pool; /* Adapter memory pools */ struct qdio_initialize qdio_init_data; /* for qdio_establish */ - struct device generic_services; /* directory for WKA ports */ struct fc_host_statistics *fc_stats; struct fsf_qtcb_bottom_port *stats_reset_data; unsigned long stats_reset; struct work_struct scan_work; + atomic_t qdio_outb_full; /* queue full incidents */ }; struct zfcp_port { @@ -579,18 +527,16 @@ struct zfcp_port { refcount drop to zero */ struct zfcp_adapter *adapter; /* adapter used to access port */ struct list_head unit_list_head; /* head of logical unit list */ - struct list_head unit_remove_lh; /* head of luns to be removed - list */ - u32 units; /* # of logical units in list */ atomic_t status; /* status of this remote port */ - wwn_t wwnn; /* WWNN if known */ - wwn_t wwpn; /* WWPN */ + u64 wwnn; /* WWNN if known */ + u64 wwpn; /* WWPN */ u32 d_id; /* D_ID */ u32 handle; /* handle assigned by FSF */ struct zfcp_erp_action erp_action; /* pending error recovery */ atomic_t erp_counter; u32 maxframe_size; u32 supported_classes; + struct work_struct gid_pn_work; }; struct zfcp_unit { @@ -601,8 +547,7 @@ struct zfcp_unit { refcount drop to zero */ struct zfcp_port *port; /* remote port of unit */ atomic_t status; /* status of this logical unit */ - unsigned int scsi_lun; /* own SCSI LUN */ - fcp_lun_t fcp_lun; /* own FCP_LUN */ + u64 fcp_lun; /* own FCP_LUN */ u32 handle; /* handle assigned by FSF */ struct scsi_device *device; /* scsi device struct pointer */ struct zfcp_erp_action erp_action; /* pending error recovery */ @@ -625,7 +570,7 @@ struct zfcp_fsf_req { u8 sbal_response; /* SBAL used in interrupt */ wait_queue_head_t completion_wq; /* can be used by a routine to wait for completion */ - volatile u32 status; /* status of this request */ + u32 status; /* status of this request */ u32 fsf_command; /* FSF Command copy */ struct fsf_qtcb *qtcb; /* address of associated QTCB */ u32 seq_no; /* Sequence number of request */ @@ -644,23 +589,20 @@ struct zfcp_fsf_req { struct zfcp_data { struct scsi_host_template scsi_host_template; struct scsi_transport_template *scsi_transport_template; - atomic_t status; /* Module status flags */ struct list_head adapter_list_head; /* head of adapter list */ - struct list_head adapter_remove_lh; /* head of adapters to be - removed */ - u32 adapters; /* # of adapters in list */ rwlock_t config_lock; /* serialises changes to adapter/port/unit lists */ struct semaphore config_sema; /* serialises configuration changes */ atomic_t loglevel; /* current loglevel */ - char init_busid[BUS_ID_SIZE]; - wwn_t init_wwpn; - fcp_lun_t init_fcp_lun; - struct kmem_cache *fsf_req_qtcb_cache; - struct kmem_cache *sr_buffer_cache; - struct kmem_cache *gid_pn_cache; + char init_busid[20]; + u64 init_wwpn; + u64 init_fcp_lun; + struct kmem_cache *fsf_req_qtcb_cache; + struct kmem_cache *sr_buffer_cache; + struct kmem_cache *gid_pn_cache; + struct workqueue_struct *work_queue; }; /* struct used by memory pools for fsf_requests */ @@ -677,14 +619,7 @@ struct zfcp_fsf_req_qtcb { #define ZFCP_SET 0x00000100 #define ZFCP_CLEAR 0x00000200 -#ifndef atomic_test_mask -#define atomic_test_mask(mask, target) \ - ((atomic_read(target) & mask) == mask) -#endif - -#define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) -#define zfcp_get_busid_by_port(port) (zfcp_get_busid_by_adapter(port->adapter)) -#define zfcp_get_busid_by_unit(unit) (zfcp_get_busid_by_port(unit->port)) +#define zfcp_get_busid_by_adapter(adapter) (dev_name(&adapter->ccw_device->dev)) /* * Helper functions for request ID management. @@ -745,12 +680,6 @@ zfcp_unit_put(struct zfcp_unit *unit) } static inline void -zfcp_unit_wait(struct zfcp_unit *unit) -{ - wait_event(unit->remove_wq, atomic_read(&unit->refcount) == 0); -} - -static inline void zfcp_port_get(struct zfcp_port *port) { atomic_inc(&port->refcount); @@ -764,12 +693,6 @@ zfcp_port_put(struct zfcp_port *port) } static inline void -zfcp_port_wait(struct zfcp_port *port) -{ - wait_event(port->remove_wq, atomic_read(&port->refcount) == 0); -} - -static inline void zfcp_adapter_get(struct zfcp_adapter *adapter) { atomic_inc(&adapter->refcount); @@ -782,10 +705,4 @@ zfcp_adapter_put(struct zfcp_adapter *adapter) wake_up(&adapter->remove_wq); } -static inline void -zfcp_adapter_wait(struct zfcp_adapter *adapter) -{ - wait_event(adapter->remove_wq, atomic_read(&adapter->refcount) == 0); -} - #endif /* ZFCP_DEF_H */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 643ac4bba5b5..9040f738ff33 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -23,7 +23,6 @@ enum zfcp_erp_steps { ZFCP_ERP_STEP_FSF_XCONFIG = 0x0001, ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, - ZFCP_ERP_STEP_NAMESERVER_OPEN = 0x0200, ZFCP_ERP_STEP_NAMESERVER_LOOKUP = 0x0400, ZFCP_ERP_STEP_PORT_OPENING = 0x0800, ZFCP_ERP_STEP_UNIT_CLOSING = 0x1000, @@ -532,8 +531,7 @@ static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, struct zfcp_port *port; list_for_each_entry(port, &adapter->port_list_head, list) - if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA)) - _zfcp_erp_port_reopen(port, clear, id, ref); + _zfcp_erp_port_reopen(port, clear, id, ref); } static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear, u8 id, @@ -669,8 +667,6 @@ static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act) int ret; struct zfcp_adapter *adapter = act->adapter; - atomic_clear_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); - write_lock_irq(&adapter->erp_lock); zfcp_erp_action_to_running(act); write_unlock_irq(&adapter->erp_lock); @@ -741,8 +737,7 @@ static int zfcp_erp_adapter_strategy_generic(struct zfcp_erp_action *act, ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR); failed_qdio: atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK | - ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | - ZFCP_STATUS_ADAPTER_XPORT_OK, + ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &act->adapter->status); return retval; } @@ -751,15 +746,11 @@ static int zfcp_erp_adapter_strategy(struct zfcp_erp_action *act) { int retval; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status); zfcp_erp_adapter_strategy_generic(act, 1); /* close */ - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &act->adapter->status); if (act->status & ZFCP_STATUS_ERP_CLOSE_ONLY) return ZFCP_ERP_EXIT; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status); retval = zfcp_erp_adapter_strategy_generic(act, 0); /* open */ - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &act->adapter->status); if (retval == ZFCP_ERP_FAILED) ssleep(8); @@ -783,10 +774,7 @@ static int zfcp_erp_port_forced_strategy_close(struct zfcp_erp_action *act) static void zfcp_erp_port_strategy_clearstati(struct zfcp_port *port) { - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING | - ZFCP_STATUS_COMMON_CLOSING | - ZFCP_STATUS_COMMON_ACCESS_DENIED | - ZFCP_STATUS_PORT_DID_DID | + atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_PORT_PHYS_CLOSING | ZFCP_STATUS_PORT_INVALID_WWPN, &port->status); @@ -839,73 +827,12 @@ static int zfcp_erp_port_strategy_open_port(struct zfcp_erp_action *erp_action) return ZFCP_ERP_CONTINUES; } -static void zfcp_erp_port_strategy_open_ns_wake(struct zfcp_erp_action *ns_act) -{ - unsigned long flags; - struct zfcp_adapter *adapter = ns_act->adapter; - struct zfcp_erp_action *act, *tmp; - int status; - - read_lock_irqsave(&adapter->erp_lock, flags); - list_for_each_entry_safe(act, tmp, &adapter->erp_running_head, list) { - if (act->step == ZFCP_ERP_STEP_NAMESERVER_OPEN) { - status = atomic_read(&adapter->nameserver_port->status); - if (status & ZFCP_STATUS_COMMON_ERP_FAILED) - zfcp_erp_port_failed(act->port, 27, NULL); - zfcp_erp_action_ready(act); - } - } - read_unlock_irqrestore(&adapter->erp_lock, flags); -} - -static int zfcp_erp_port_strategy_open_nameserver(struct zfcp_erp_action *act) -{ - int retval; - - switch (act->step) { - case ZFCP_ERP_STEP_UNINITIALIZED: - case ZFCP_ERP_STEP_PHYS_PORT_CLOSING: - case ZFCP_ERP_STEP_PORT_CLOSING: - return zfcp_erp_port_strategy_open_port(act); - - case ZFCP_ERP_STEP_PORT_OPENING: - if (atomic_read(&act->port->status) & ZFCP_STATUS_COMMON_OPEN) - retval = ZFCP_ERP_SUCCEEDED; - else - retval = ZFCP_ERP_FAILED; - /* this is needed anyway */ - zfcp_erp_port_strategy_open_ns_wake(act); - return retval; - - default: - return ZFCP_ERP_FAILED; - } -} - -static int zfcp_erp_port_strategy_open_lookup(struct zfcp_erp_action *act) -{ - int retval; - - retval = zfcp_fc_ns_gid_pn_request(act); - if (retval == -ENOMEM) - return ZFCP_ERP_NOMEM; - act->step = ZFCP_ERP_STEP_NAMESERVER_LOOKUP; - if (retval) - return ZFCP_ERP_FAILED; - return ZFCP_ERP_CONTINUES; -} - static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) { struct zfcp_adapter *adapter = act->adapter; struct zfcp_port *port = act->port; if (port->wwpn != adapter->peer_wwpn) { - dev_err(&adapter->ccw_device->dev, - "Failed to open port 0x%016Lx, " - "Peer WWPN 0x%016Lx does not " - "match.\n", port->wwpn, - adapter->peer_wwpn); zfcp_erp_port_failed(port, 25, NULL); return ZFCP_ERP_FAILED; } @@ -914,11 +841,25 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act) return zfcp_erp_port_strategy_open_port(act); } +void zfcp_erp_port_strategy_open_lookup(struct work_struct *work) +{ + int retval; + struct zfcp_port *port = container_of(work, struct zfcp_port, + 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); + +} + static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) { struct zfcp_adapter *adapter = act->adapter; struct zfcp_port *port = act->port; - struct zfcp_port *ns_port = adapter->nameserver_port; int p_status = atomic_read(&port->status); switch (act->step) { @@ -927,28 +868,10 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) case ZFCP_ERP_STEP_PORT_CLOSING: if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP) return zfcp_erp_open_ptp_port(act); - if (!ns_port) { - dev_err(&adapter->ccw_device->dev, - "Nameserver port unavailable.\n"); - return ZFCP_ERP_FAILED; - } - if (!(atomic_read(&ns_port->status) & - ZFCP_STATUS_COMMON_UNBLOCKED)) { - /* nameserver port may live again */ - atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, - &ns_port->status); - if (zfcp_erp_port_reopen(ns_port, 0, 77, act) >= 0) { - act->step = ZFCP_ERP_STEP_NAMESERVER_OPEN; - return ZFCP_ERP_CONTINUES; - } - return ZFCP_ERP_FAILED; + if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) { + queue_work(zfcp_data.work_queue, &port->gid_pn_work); + return ZFCP_ERP_CONTINUES; } - /* else nameserver port is already open, fall through */ - case ZFCP_ERP_STEP_NAMESERVER_OPEN: - if (!(atomic_read(&ns_port->status) & ZFCP_STATUS_COMMON_OPEN)) - return ZFCP_ERP_FAILED; - return zfcp_erp_port_strategy_open_lookup(act); - case ZFCP_ERP_STEP_NAMESERVER_LOOKUP: if (!(p_status & ZFCP_STATUS_PORT_DID_DID)) { if (p_status & (ZFCP_STATUS_PORT_INVALID_WWPN)) { @@ -961,25 +884,26 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act) case ZFCP_ERP_STEP_PORT_OPENING: /* D_ID might have changed during open */ - if ((p_status & ZFCP_STATUS_COMMON_OPEN) && - (p_status & ZFCP_STATUS_PORT_DID_DID)) - return ZFCP_ERP_SUCCEEDED; + if (p_status & ZFCP_STATUS_COMMON_OPEN) { + if (p_status & ZFCP_STATUS_PORT_DID_DID) + return ZFCP_ERP_SUCCEEDED; + else { + act->step = ZFCP_ERP_STEP_PORT_CLOSING; + return ZFCP_ERP_CONTINUES; + } /* fall through otherwise */ + } } return ZFCP_ERP_FAILED; } -static int zfcp_erp_port_strategy_open(struct zfcp_erp_action *act) -{ - if (atomic_read(&act->port->status) & (ZFCP_STATUS_PORT_WKA)) - return zfcp_erp_port_strategy_open_nameserver(act); - return zfcp_erp_port_strategy_open_common(act); -} - static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action) { struct zfcp_port *port = erp_action->port; + if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC) + goto close_init_done; + switch (erp_action->step) { case ZFCP_ERP_STEP_UNINITIALIZED: zfcp_erp_port_strategy_clearstati(port); @@ -992,19 +916,17 @@ static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action) return ZFCP_ERP_FAILED; break; } + +close_init_done: if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY) return ZFCP_ERP_EXIT; - else - return zfcp_erp_port_strategy_open(erp_action); - return ZFCP_ERP_FAILED; + return zfcp_erp_port_strategy_open_common(erp_action); } static void zfcp_erp_unit_strategy_clearstati(struct zfcp_unit *unit) { - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING | - ZFCP_STATUS_COMMON_CLOSING | - ZFCP_STATUS_COMMON_ACCESS_DENIED | + atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_UNIT_SHARED | ZFCP_STATUS_UNIT_READONLY, &unit->status); @@ -1065,8 +987,14 @@ static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result) break; case ZFCP_ERP_FAILED : atomic_inc(&unit->erp_counter); - if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&unit->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&unit->port->adapter->ccw_device->dev, + "ERP failed for unit 0x%016Lx on " + "port 0x%016Lx\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 21, NULL); + } break; } @@ -1091,8 +1019,12 @@ static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result) result = ZFCP_ERP_EXIT; } atomic_inc(&port->erp_counter); - if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&port->adapter->ccw_device->dev, + "ERP failed for remote port 0x%016Lx\n", + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 22, NULL); + } break; } @@ -1114,8 +1046,12 @@ static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter, case ZFCP_ERP_FAILED : atomic_inc(&adapter->erp_counter); - if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS) + if (atomic_read(&adapter->erp_counter) > ZFCP_MAX_ERPS) { + dev_err(&adapter->ccw_device->dev, + "ERP cannot recover an error " + "on the FCP device\n"); zfcp_erp_adapter_failed(adapter, 23, NULL); + } break; } @@ -1250,9 +1186,10 @@ static void zfcp_erp_scsi_scan(struct work_struct *work) struct zfcp_unit *unit = p->unit; struct fc_rport *rport = unit->port->rport; scsi_scan_target(&rport->dev, 0, rport->scsi_target_id, - unit->scsi_lun, 0); + scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0); atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); zfcp_unit_put(unit); + wake_up(&unit->port->adapter->erp_done_wqh); kfree(p); } @@ -1263,9 +1200,9 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit) p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) { dev_err(&unit->port->adapter->ccw_device->dev, - "Out of resources. Could not register unit " - "0x%016Lx on port 0x%016Lx with SCSI stack.\n", - unit->fcp_lun, unit->port->wwpn); + "Registering unit 0x%016Lx on port 0x%016Lx failed\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); return; } @@ -1273,7 +1210,7 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit) atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status); INIT_WORK(&p->work, zfcp_erp_scsi_scan); p->unit = unit; - schedule_work(&p->work); + queue_work(zfcp_data.work_queue, &p->work); } static void zfcp_erp_rport_register(struct zfcp_port *port) @@ -1286,8 +1223,8 @@ static void zfcp_erp_rport_register(struct zfcp_port *port) port->rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); if (!port->rport) { dev_err(&port->adapter->ccw_device->dev, - "Failed registration of rport " - "0x%016Lx.\n", port->wwpn); + "Registering port 0x%016Lx failed\n", + (unsigned long long)port->wwpn); return; } @@ -1299,12 +1236,12 @@ static void zfcp_erp_rport_register(struct zfcp_port *port) static void zfcp_erp_rports_del(struct zfcp_adapter *adapter) { struct zfcp_port *port; - list_for_each_entry(port, &adapter->port_list_head, list) - if (port->rport && !(atomic_read(&port->status) & - ZFCP_STATUS_PORT_WKA)) { - fc_remote_port_delete(port->rport); - port->rport = NULL; - } + list_for_each_entry(port, &adapter->port_list_head, list) { + if (!port->rport) + continue; + fc_remote_port_delete(port->rport); + port->rport = NULL; + } } static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result) @@ -1439,7 +1376,7 @@ static int zfcp_erp_thread(void *data) struct zfcp_erp_action *act; unsigned long flags; - daemonize("zfcperp%s", adapter->ccw_device->dev.bus_id); + daemonize("zfcperp%s", dev_name(&adapter->ccw_device->dev)); /* Block all signals */ siginitsetinv(¤t->blocked, 0); atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); @@ -1459,9 +1396,9 @@ static int zfcp_erp_thread(void *data) zfcp_erp_wakeup(adapter); } - zfcp_rec_dbf_event_thread(4, adapter); + zfcp_rec_dbf_event_thread_lock(4, adapter); down_interruptible(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread(5, adapter); + zfcp_rec_dbf_event_thread_lock(5, adapter); } atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status); @@ -1484,7 +1421,7 @@ int zfcp_erp_thread_setup(struct zfcp_adapter *adapter) retval = kernel_thread(zfcp_erp_thread, adapter, SIGCHLD); if (retval < 0) { dev_err(&adapter->ccw_device->dev, - "Creation of ERP thread failed.\n"); + "Creating an ERP thread for the FCP device failed.\n"); return retval; } wait_event(adapter->erp_thread_wqh, @@ -1506,7 +1443,7 @@ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter) { atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status); up(&adapter->erp_ready_sem); - zfcp_rec_dbf_event_thread_lock(2, adapter); + zfcp_rec_dbf_event_thread_lock(3, adapter); wait_event(adapter->erp_thread_wqh, !(atomic_read(&adapter->status) & @@ -1526,7 +1463,6 @@ void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref) { zfcp_erp_modify_adapter_status(adapter, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - dev_err(&adapter->ccw_device->dev, "Adapter ERP failed.\n"); } /** @@ -1539,15 +1475,6 @@ void zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref) { zfcp_erp_modify_port_status(port, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA) - dev_err(&port->adapter->ccw_device->dev, - "Port ERP failed for WKA port d_id=0x%06x.\n", - port->d_id); - else - dev_err(&port->adapter->ccw_device->dev, - "Port ERP failed for port wwpn=0x%016Lx.\n", - port->wwpn); } /** @@ -1560,10 +1487,6 @@ void zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref) { zfcp_erp_modify_unit_status(unit, id, ref, ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET); - - dev_err(&unit->port->adapter->ccw_device->dev, - "Unit ERP failed for unit 0x%016Lx on port 0x%016Lx.\n", - unit->fcp_lun, unit->port->wwpn); } /** @@ -1754,9 +1677,8 @@ static void zfcp_erp_port_access_changed(struct zfcp_port *port, u8 id, if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_COMMON_ACCESS_BOXED))) { - if (!(status & ZFCP_STATUS_PORT_WKA)) - list_for_each_entry(unit, &port->unit_list_head, list) - zfcp_erp_unit_access_changed(unit, id, ref); + list_for_each_entry(unit, &port->unit_list_head, list) + zfcp_erp_unit_access_changed(unit, id, ref); return; } @@ -1779,10 +1701,7 @@ void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, u8 id, return; read_lock_irqsave(&zfcp_data.config_lock, flags); - if (adapter->nameserver_port) - zfcp_erp_port_access_changed(adapter->nameserver_port, id, ref); list_for_each_entry(port, &adapter->port_list_head, list) - if (port != adapter->nameserver_port) - zfcp_erp_port_access_changed(port, id, ref); + zfcp_erp_port_access_changed(port, id, ref); read_unlock_irqrestore(&zfcp_data.config_lock, flags); } diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index edfdb21591f3..b5adeda93e1d 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -12,16 +12,14 @@ #include "zfcp_def.h" /* zfcp_aux.c */ -extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, - fcp_lun_t); -extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, - wwn_t); +extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, u64); +extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64); extern int zfcp_adapter_enqueue(struct ccw_device *); extern void zfcp_adapter_dequeue(struct zfcp_adapter *); -extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, wwn_t, u32, +extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32, u32); extern void zfcp_port_dequeue(struct zfcp_port *); -extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t); +extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, u64); extern void zfcp_unit_dequeue(struct zfcp_unit *); extern int zfcp_reqlist_isempty(struct zfcp_adapter *); extern void zfcp_sg_free_table(struct scatterlist *, int); @@ -29,6 +27,7 @@ extern int zfcp_sg_setup_table(struct scatterlist *, int); /* zfcp_ccw.c */ extern int zfcp_ccw_register(void); +extern struct zfcp_adapter *zfcp_get_adapter_by_busid(char *); /* zfcp_cfdc.c */ extern struct miscdevice zfcp_cfdc_misc; @@ -50,6 +49,8 @@ extern void zfcp_hba_dbf_event_fsf_unsol(const char *, struct zfcp_adapter *, struct fsf_status_read_buffer *); extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *, unsigned int, int, int); +extern void zfcp_hba_dbf_event_berr(struct zfcp_adapter *, + struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *); extern void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *); @@ -91,17 +92,21 @@ extern void zfcp_erp_port_access_denied(struct zfcp_port *, u8, void *); extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, u8, void *); extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, u8, void *); extern void zfcp_erp_timeout_handler(unsigned long); +extern void zfcp_erp_port_strategy_open_lookup(struct work_struct *); /* zfcp_fc.c */ extern int zfcp_scan_ports(struct zfcp_adapter *); extern void _zfcp_scan_ports_later(struct work_struct *); extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *); -extern int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *); +extern int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *); extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *); extern void zfcp_test_link(struct zfcp_port *); +extern void zfcp_fc_nameserver_init(struct zfcp_adapter *); /* zfcp_fsf.c */ extern int zfcp_fsf_open_port(struct zfcp_erp_action *); +extern int zfcp_fsf_open_wka_port(struct zfcp_wka_port *); +extern int zfcp_fsf_close_wka_port(struct zfcp_wka_port *); extern int zfcp_fsf_close_port(struct zfcp_erp_action *); extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *); extern int zfcp_fsf_open_unit(struct zfcp_erp_action *); @@ -135,10 +140,8 @@ extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long, extern int zfcp_qdio_allocate(struct zfcp_adapter *); extern void zfcp_qdio_free(struct zfcp_adapter *); extern int zfcp_qdio_send(struct zfcp_fsf_req *); -extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_req( - struct zfcp_fsf_req *); -extern volatile struct qdio_buffer_element *zfcp_qdio_sbale_curr( - struct zfcp_fsf_req *); +extern struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *); +extern struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *); extern int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *, unsigned long, struct scatterlist *, int); extern int zfcp_qdio_open(struct zfcp_adapter *); @@ -148,14 +151,12 @@ extern void zfcp_qdio_close(struct zfcp_adapter *); extern struct zfcp_data zfcp_data; extern int zfcp_adapter_scsi_register(struct zfcp_adapter *); extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *); -extern void zfcp_set_fcp_dl(struct fcp_cmnd_iu *, fcp_dl_t); extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *); extern struct fc_function_template zfcp_transport_functions; /* zfcp_sysfs.c */ extern struct attribute_group zfcp_sysfs_unit_attrs; extern struct attribute_group zfcp_sysfs_adapter_attrs; -extern struct attribute_group zfcp_sysfs_ns_port_attrs; extern struct attribute_group zfcp_sysfs_port_attrs; extern struct device_attribute *zfcp_sysfs_sdev_attrs[]; extern struct device_attribute *zfcp_sysfs_shost_attrs[]; diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 56196c98c07b..1a7c80a77ff5 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -39,6 +39,84 @@ struct zfcp_gpn_ft { struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS]; }; +struct zfcp_fc_ns_handler_data { + struct completion done; + void (*handler)(unsigned long); + unsigned long handler_data; +}; + +static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) +{ + if (mutex_lock_interruptible(&wka_port->mutex)) + return -ERESTARTSYS; + + if (wka_port->status != ZFCP_WKA_PORT_ONLINE) { + wka_port->status = ZFCP_WKA_PORT_OPENING; + if (zfcp_fsf_open_wka_port(wka_port)) + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + } + + 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); + + if (wka_port->status == ZFCP_WKA_PORT_ONLINE) { + atomic_inc(&wka_port->refcount); + return 0; + } + return -EIO; +} + +static void zfcp_wka_port_offline(struct work_struct *work) +{ + struct delayed_work *dw = container_of(work, struct delayed_work, work); + struct zfcp_wka_port *wka_port = + container_of(dw, struct zfcp_wka_port, work); + + wait_event(wka_port->completion_wq, + atomic_read(&wka_port->refcount) == 0); + + mutex_lock(&wka_port->mutex); + if ((atomic_read(&wka_port->refcount) != 0) || + (wka_port->status != ZFCP_WKA_PORT_ONLINE)) + goto out; + + wka_port->status = ZFCP_WKA_PORT_CLOSING; + if (zfcp_fsf_close_wka_port(wka_port)) { + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wake_up(&wka_port->completion_wq); + } +out: + mutex_unlock(&wka_port->mutex); +} + +static void zfcp_wka_port_put(struct zfcp_wka_port *wka_port) +{ + if (atomic_dec_return(&wka_port->refcount) != 0) + return; + /* wait 10 miliseconds, other reqs might pop in */ + schedule_delayed_work(&wka_port->work, HZ / 100); +} + +void zfcp_fc_nameserver_init(struct zfcp_adapter *adapter) +{ + struct zfcp_wka_port *wka_port = &adapter->nsp; + + init_waitqueue_head(&wka_port->completion_wq); + + wka_port->adapter = adapter; + wka_port->d_id = ZFCP_DID_DIRECTORY_SERVICE; + + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + atomic_set(&wka_port->refcount, 0); + mutex_init(&wka_port->mutex); + INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline); +} + static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, struct fcp_rscn_element *elem) { @@ -47,10 +125,8 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, read_lock_irqsave(&zfcp_data.config_lock, flags); list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) { - if (atomic_test_mask(ZFCP_STATUS_PORT_WKA, &port->status)) - continue; /* FIXME: ZFCP_STATUS_PORT_DID_DID check is racy */ - if (!atomic_test_mask(ZFCP_STATUS_PORT_DID_DID, &port->status)) + if (!(atomic_read(&port->status) & ZFCP_STATUS_PORT_DID_DID)) /* Try to connect to unused ports anyway. */ zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, @@ -102,7 +178,7 @@ static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req) schedule_work(&fsf_req->adapter->scan_work); } -static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, wwn_t wwpn) +static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn) { struct zfcp_adapter *adapter = req->adapter; struct zfcp_port *port; @@ -157,7 +233,18 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) zfcp_fc_incoming_rscn(fsf_req); } -static void zfcp_ns_gid_pn_handler(unsigned long data) +static void zfcp_fc_ns_handler(unsigned long data) +{ + struct zfcp_fc_ns_handler_data *compl_rec = + (struct zfcp_fc_ns_handler_data *) data; + + if (compl_rec->handler) + compl_rec->handler(compl_rec->handler_data); + + complete(&compl_rec->done); +} + +static void zfcp_fc_ns_gid_pn_eval(unsigned long data) { struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data; struct zfcp_send_ct *ct = &gid_pn->ct; @@ -166,43 +253,31 @@ static void zfcp_ns_gid_pn_handler(unsigned long data) struct zfcp_port *port = gid_pn->port; if (ct->status) - goto out; + return; if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT) { atomic_set_mask(ZFCP_STATUS_PORT_INVALID_WWPN, &port->status); - goto out; + return; } /* paranoia */ if (ct_iu_req->wwpn != port->wwpn) - goto out; + return; /* looks like a valid d_id */ port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK; atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status); -out: - mempool_free(gid_pn, port->adapter->pool.data_gid_pn); } -/** - * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request - * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed - * return: -ENOMEM on error, 0 otherwise - */ -int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action) +int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, + struct zfcp_gid_pn_data *gid_pn) { - int ret; - struct zfcp_gid_pn_data *gid_pn; struct zfcp_adapter *adapter = erp_action->adapter; - - gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); - if (!gid_pn) - return -ENOMEM; - - memset(gid_pn, 0, sizeof(*gid_pn)); + struct zfcp_fc_ns_handler_data compl_rec; + int ret; /* setup parameters for send generic command */ gid_pn->port = erp_action->port; - gid_pn->ct.port = adapter->nameserver_port; - gid_pn->ct.handler = zfcp_ns_gid_pn_handler; - gid_pn->ct.handler_data = (unsigned long) gid_pn; + gid_pn->ct.wka_port = &adapter->nsp; + gid_pn->ct.handler = zfcp_fc_ns_handler; + gid_pn->ct.handler_data = (unsigned long) &compl_rec; gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT; gid_pn->ct.req = &gid_pn->req; gid_pn->ct.resp = &gid_pn->resp; @@ -222,10 +297,42 @@ int zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action) gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_MAX_SIZE; gid_pn->ct_iu_req.wwpn = erp_action->port->wwpn; + init_completion(&compl_rec.done); + compl_rec.handler = zfcp_fc_ns_gid_pn_eval; + compl_rec.handler_data = (unsigned long) gid_pn; ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp, erp_action); + if (!ret) + wait_for_completion(&compl_rec.done); + return ret; +} + +/** + * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request + * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed + * return: -ENOMEM on error, 0 otherwise + */ +int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *erp_action) +{ + int ret; + struct zfcp_gid_pn_data *gid_pn; + struct zfcp_adapter *adapter = erp_action->adapter; + + gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); + if (!gid_pn) + return -ENOMEM; + + memset(gid_pn, 0, sizeof(*gid_pn)); + + ret = zfcp_wka_port_get(&adapter->nsp); if (ret) - mempool_free(gid_pn, adapter->pool.data_gid_pn); + goto out; + + ret = zfcp_fc_ns_gid_pn_request(erp_action, gid_pn); + + zfcp_wka_port_put(&adapter->nsp); +out: + mempool_free(gid_pn, adapter->pool.data_gid_pn); return ret; } @@ -255,14 +362,14 @@ struct zfcp_els_adisc { struct scatterlist req; struct scatterlist resp; struct zfcp_ls_adisc ls_adisc; - struct zfcp_ls_adisc_acc ls_adisc_acc; + struct zfcp_ls_adisc ls_adisc_acc; }; static void zfcp_fc_adisc_handler(unsigned long data) { struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data; struct zfcp_port *port = adisc->els.port; - struct zfcp_ls_adisc_acc *ls_adisc = &adisc->ls_adisc_acc; + struct zfcp_ls_adisc *ls_adisc = &adisc->ls_adisc_acc; if (adisc->els.status) { /* request rejected or timed out */ @@ -295,7 +402,7 @@ static int zfcp_fc_adisc(struct zfcp_port *port) sg_init_one(adisc->els.req, &adisc->ls_adisc, sizeof(struct zfcp_ls_adisc)); sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc, - sizeof(struct zfcp_ls_adisc_acc)); + sizeof(struct zfcp_ls_adisc)); adisc->els.req_count = 1; adisc->els.resp_count = 1; @@ -338,30 +445,6 @@ void zfcp_test_link(struct zfcp_port *port) zfcp_erp_port_forced_reopen(port, 0, 65, NULL); } -static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter) -{ - int ret; - - if (!adapter->nameserver_port) - return -EINTR; - - if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, - &adapter->nameserver_port->status)) { - ret = zfcp_erp_port_reopen(adapter->nameserver_port, 0, 148, - NULL); - if (ret) - return ret; - zfcp_erp_wait(adapter); - } - return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, - &adapter->nameserver_port->status); -} - -static void zfcp_gpn_ft_handler(unsigned long _done) -{ - complete((struct completion *)_done); -} - static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft) { struct scatterlist *sg = &gpn_ft->sg_req; @@ -403,7 +486,7 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, { struct zfcp_send_ct *ct = &gpn_ft->ct; struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req); - struct completion done; + struct zfcp_fc_ns_handler_data compl_rec; int ret; /* prepare CT IU for GPN_FT */ @@ -420,19 +503,20 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, req->fc4_type = ZFCP_CT_SCSI_FCP; /* prepare zfcp_send_ct */ - ct->port = adapter->nameserver_port; - ct->handler = zfcp_gpn_ft_handler; - ct->handler_data = (unsigned long)&done; + ct->wka_port = &adapter->nsp; + ct->handler = zfcp_fc_ns_handler; + ct->handler_data = (unsigned long)&compl_rec; ct->timeout = 10; ct->req = &gpn_ft->sg_req; ct->resp = gpn_ft->sg_resp; ct->req_count = 1; ct->resp_count = ZFCP_GPN_FT_BUFFERS; - init_completion(&done); + init_completion(&compl_rec.done); + compl_rec.handler = NULL; ret = zfcp_fsf_send_ct(ct, NULL, NULL); if (!ret) - wait_for_completion(&done); + wait_for_completion(&compl_rec.done); return ret; } @@ -442,9 +526,8 @@ static void zfcp_validate_port(struct zfcp_port *port) atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status); - if (port == adapter->nameserver_port) - return; - if ((port->supported_classes != 0) || (port->units != 0)) { + if ((port->supported_classes != 0) || + !list_empty(&port->unit_list_head)) { zfcp_port_put(port); return; } @@ -460,7 +543,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) struct scatterlist *sg = gpn_ft->sg_resp; struct ct_hdr *hdr = sg_virt(sg); struct gpn_ft_resp_acc *acc = sg_virt(sg); - struct zfcp_adapter *adapter = ct->port->adapter; + struct zfcp_adapter *adapter = ct->wka_port->adapter; struct zfcp_port *port, *tmp; u32 d_id; int ret = 0, x, last = 0; @@ -490,6 +573,9 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 | acc->port_id[2]; + /* don't attach ports with a well known address */ + if ((d_id & ZFCP_DID_WKA) == ZFCP_DID_WKA) + continue; /* skip the adapter's port and known remote ports */ if (acc->wwpn == fc_host_port_name(adapter->scsi_host)) continue; @@ -528,13 +614,15 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT) return 0; - ret = zfcp_scan_get_nameserver(adapter); + ret = zfcp_wka_port_get(&adapter->nsp); if (ret) return ret; gpn_ft = zfcp_alloc_sg_env(); - if (!gpn_ft) - return -ENOMEM; + if (!gpn_ft) { + ret = -ENOMEM; + goto out; + } for (i = 0; i < 3; i++) { ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter); @@ -547,7 +635,8 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } } zfcp_free_sg_env(gpn_ft); - +out: + zfcp_wka_port_put(&adapter->nsp); return ret; } diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 49dbeb754e5f..739356a5c123 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -50,19 +50,16 @@ static u32 fsf_qtcb_type[] = { [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND }; -static const char *zfcp_act_subtable_type[] = { - "unknown", "OS", "WWPN", "DID", "LUN" -}; - static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) { u16 subtable = table >> 16; u16 rule = table & 0xffff; + const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; - if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type)) + if (subtable && subtable < ARRAY_SIZE(act_type)) dev_warn(&adapter->ccw_device->dev, - "Access denied in subtable %s, rule %d.\n", - zfcp_act_subtable_type[subtable], rule); + "Access denied according to ACT rule type %s, " + "rule %d\n", act_type[subtable], rule); } static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, @@ -70,8 +67,8 @@ static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, { struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, - "Access denied, cannot send command to port 0x%016Lx.\n", - port->wwpn); + "Access denied to port 0x%016Lx\n", + (unsigned long long)port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); zfcp_erp_port_access_denied(port, 55, req); @@ -83,8 +80,9 @@ static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, { struct fsf_qtcb_header *header = &req->qtcb->header; dev_warn(&req->adapter->ccw_device->dev, - "Access denied for unit 0x%016Lx on port 0x%016Lx.\n", - unit->fcp_lun, unit->port->wwpn); + "Access denied to unit 0x%016Lx on port 0x%016Lx\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); zfcp_erp_unit_access_denied(unit, 59, req); @@ -93,9 +91,8 @@ static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) { - dev_err(&req->adapter->ccw_device->dev, - "Required FC class not supported by adapter, " - "shutting down adapter.\n"); + dev_err(&req->adapter->ccw_device->dev, "FCP device not " + "operational because of an unsupported FC class\n"); zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; } @@ -171,42 +168,6 @@ static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) read_unlock_irqrestore(&zfcp_data.config_lock, flags); } -static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req) -{ - struct zfcp_adapter *adapter = req->adapter; - struct fsf_status_read_buffer *sr_buf = req->data; - struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; - - dev_warn(&adapter->ccw_device->dev, - "Warning: bit error threshold data " - "received for the adapter: " - "link failures = %i, loss of sync errors = %i, " - "loss of signal errors = %i, " - "primitive sequence errors = %i, " - "invalid transmission word errors = %i, " - "CRC errors = %i).\n", - err->link_failure_error_count, - err->loss_of_sync_error_count, - err->loss_of_signal_error_count, - err->primitive_sequence_error_count, - err->invalid_transmission_word_error_count, - err->crc_error_count); - dev_warn(&adapter->ccw_device->dev, - "Additional bit error threshold data of the adapter: " - "primitive sequence event time-outs = %i, " - "elastic buffer overrun errors = %i, " - "advertised receive buffer-to-buffer credit = %i, " - "current receice buffer-to-buffer credit = %i, " - "advertised transmit buffer-to-buffer credit = %i, " - "current transmit buffer-to-buffer credit = %i).\n", - err->primitive_sequence_event_timeout_count, - err->elastic_buffer_overrun_error_count, - err->advertised_receive_b2b_credit, - err->current_receive_b2b_credit, - err->advertised_transmit_b2b_credit, - err->current_transmit_b2b_credit); -} - static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, struct fsf_link_down_info *link_down) { @@ -223,62 +184,66 @@ static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, switch (link_down->error_code) { case FSF_PSQ_LINK_NO_LIGHT: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: no light detected.\n"); + "There is no light signal from the local " + "fibre channel cable\n"); break; case FSF_PSQ_LINK_WRAP_PLUG: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: wrap plug detected.\n"); + "There is a wrap plug instead of a fibre " + "channel cable\n"); break; case FSF_PSQ_LINK_NO_FCP: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "adjacent node on link does not support FCP.\n"); + "The adjacent fibre channel node does not " + "support FCP\n"); break; case FSF_PSQ_LINK_FIRMWARE_UPDATE: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "firmware update in progress.\n"); + "The FCP device is suspended because of a " + "firmware update\n"); break; case FSF_PSQ_LINK_INVALID_WWPN: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "duplicate or invalid WWPN detected.\n"); + "The FCP device detected a WWPN that is " + "duplicate or not valid\n"); break; case FSF_PSQ_LINK_NO_NPIV_SUPPORT: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "no support for NPIV by Fabric.\n"); + "The fibre channel fabric does not support NPIV\n"); break; case FSF_PSQ_LINK_NO_FCP_RESOURCES: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "out of resource in FCP daughtercard.\n"); + "The FCP adapter cannot support more NPIV ports\n"); break; case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "out of resource in Fabric.\n"); + "The adjacent switch cannot support " + "more NPIV ports\n"); break; case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: dev_warn(&req->adapter->ccw_device->dev, - "The local link is down: " - "unable to login to Fabric.\n"); + "The FCP adapter could not log in to the " + "fibre channel fabric\n"); break; case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: dev_warn(&req->adapter->ccw_device->dev, - "WWPN assignment file corrupted on adapter.\n"); + "The WWPN assignment file on the FCP adapter " + "has been damaged\n"); break; case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: dev_warn(&req->adapter->ccw_device->dev, - "Mode table corrupted on adapter.\n"); + "The mode table on the FCP adapter " + "has been damaged\n"); break; case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: dev_warn(&req->adapter->ccw_device->dev, - "No WWPN for assignment table on adapter.\n"); + "All NPIV ports on the FCP adapter have " + "been assigned\n"); break; default: dev_warn(&req->adapter->ccw_device->dev, - "The local link to adapter is down.\n"); + "The link between the FCP adapter and " + "the FC fabric is down\n"); } out: zfcp_erp_adapter_failed(adapter, id, req); @@ -286,27 +251,18 @@ out: static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) { - struct zfcp_adapter *adapter = req->adapter; struct fsf_status_read_buffer *sr_buf = req->data; struct fsf_link_down_info *ldi = (struct fsf_link_down_info *) &sr_buf->payload; switch (sr_buf->status_subtype) { case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: - dev_warn(&adapter->ccw_device->dev, - "Physical link is down.\n"); zfcp_fsf_link_down_info_eval(req, 38, ldi); break; case FSF_STATUS_READ_SUB_FDISC_FAILED: - dev_warn(&adapter->ccw_device->dev, - "Local link is down " - "due to failed FDISC login.\n"); zfcp_fsf_link_down_info_eval(req, 39, ldi); break; case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: - dev_warn(&adapter->ccw_device->dev, - "Local link is down " - "due to firmware update on adapter.\n"); zfcp_fsf_link_down_info_eval(req, 40, NULL); }; } @@ -335,14 +291,17 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) case FSF_STATUS_READ_SENSE_DATA_AVAIL: break; case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: - zfcp_fsf_bit_error_threshold(req); + dev_warn(&adapter->ccw_device->dev, + "The error threshold for checksum statistics " + "has been exceeded\n"); + zfcp_hba_dbf_event_berr(adapter, req); break; case FSF_STATUS_READ_LINK_DOWN: zfcp_fsf_status_read_link_down(req); break; case FSF_STATUS_READ_LINK_UP: dev_info(&adapter->ccw_device->dev, - "Local link was replugged.\n"); + "The local link has been restored\n"); /* All ports should be marked as ready to run again */ zfcp_erp_modify_adapter_status(adapter, 30, NULL, ZFCP_STATUS_COMMON_RUNNING, @@ -370,7 +329,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) zfcp_fsf_req_free(req); atomic_inc(&adapter->stat_miss); - schedule_work(&adapter->stat_work); + queue_work(zfcp_data.work_queue, &adapter->stat_work); } static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) @@ -386,8 +345,8 @@ static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) break; case FSF_SQ_NO_RECOM: dev_err(&req->adapter->ccw_device->dev, - "No recommendation could be given for a " - "problem on the adapter.\n"); + "The FCP adapter reported a problem " + "that cannot be recovered\n"); zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); break; } @@ -403,8 +362,7 @@ static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) switch (req->qtcb->header.fsf_status) { case FSF_UNKNOWN_COMMAND: dev_err(&req->adapter->ccw_device->dev, - "Command issued by the device driver (0x%x) is " - "not known by the adapter.\n", + "The FCP adapter does not recognize the command 0x%x\n", req->qtcb->header.fsf_command); zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; @@ -435,11 +393,9 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) return; case FSF_PROT_QTCB_VERSION_ERROR: dev_err(&adapter->ccw_device->dev, - "The QTCB version requested by zfcp (0x%x) is not " - "supported by the FCP adapter (lowest supported " - "0x%x, highest supported 0x%x).\n", - FSF_QTCB_CURRENT_VERSION, psq->word[0], - psq->word[1]); + "QTCB version 0x%x not supported by FCP adapter " + "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, + psq->word[0], psq->word[1]); zfcp_erp_adapter_shutdown(adapter, 0, 117, req); break; case FSF_PROT_ERROR_STATE: @@ -449,8 +405,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; case FSF_PROT_UNSUPP_QTCB_TYPE: dev_err(&adapter->ccw_device->dev, - "Packet header type used by the device driver is " - "incompatible with that used on the adapter.\n"); + "The QTCB type is not supported by the FCP adapter\n"); zfcp_erp_adapter_shutdown(adapter, 0, 118, req); break; case FSF_PROT_HOST_CONNECTION_INITIALIZING: @@ -459,7 +414,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; case FSF_PROT_DUPLICATE_REQUEST_ID: dev_err(&adapter->ccw_device->dev, - "The request identifier 0x%Lx is ambiguous.\n", + "0x%Lx is an ambiguous request identifier\n", (unsigned long long)qtcb->bottom.support.req_handle); zfcp_erp_adapter_shutdown(adapter, 0, 78, req); break; @@ -479,9 +434,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) break; default: dev_err(&adapter->ccw_device->dev, - "Transfer protocol status information" - "provided by the adapter (0x%x) " - "is not compatible with the device driver.\n", + "0x%x is not a valid transfer protocol status\n", qtcb->prefix.prot_status); zfcp_erp_adapter_shutdown(adapter, 0, 119, req); } @@ -559,33 +512,17 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) adapter->peer_wwpn = bottom->plogi_payload.wwpn; adapter->peer_wwnn = bottom->plogi_payload.wwnn; fc_host_port_type(shost) = FC_PORTTYPE_PTP; - if (req->erp_action) - dev_info(&adapter->ccw_device->dev, - "Point-to-Point fibrechannel " - "configuration detected.\n"); break; case FSF_TOPO_FABRIC: fc_host_port_type(shost) = FC_PORTTYPE_NPORT; - if (req->erp_action) - dev_info(&adapter->ccw_device->dev, - "Switched fabric fibrechannel " - "network detected.\n"); break; case FSF_TOPO_AL: fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; - dev_err(&adapter->ccw_device->dev, - "Unsupported arbitrated loop fibrechannel " - "topology detected, shutting down " - "adapter.\n"); - zfcp_erp_adapter_shutdown(adapter, 0, 127, req); - return -EIO; default: - fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; dev_err(&adapter->ccw_device->dev, - "The fibrechannel topology reported by the" - " adapter is not known by the zfcp driver," - " shutting down adapter.\n"); - zfcp_erp_adapter_shutdown(adapter, 0, 128, req); + "Unknown or unsupported arbitrated loop " + "fibre channel topology detected\n"); + zfcp_erp_adapter_shutdown(adapter, 0, 127, req); return -EIO; } @@ -616,11 +553,9 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { dev_err(&adapter->ccw_device->dev, - "Maximum QTCB size (%d bytes) allowed by " - "the adapter is lower than the minimum " - "required by the driver (%ld bytes).\n", - bottom->max_qtcb_size, - sizeof(struct fsf_qtcb)); + "FCP adapter maximum QTCB size (%d bytes) " + "is too small\n", + bottom->max_qtcb_size); zfcp_erp_adapter_shutdown(adapter, 0, 129, req); return; } @@ -656,15 +591,15 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { dev_err(&adapter->ccw_device->dev, - "The adapter only supports newer control block " - "versions, try updated device driver.\n"); + "The FCP adapter only supports newer " + "control block versions\n"); zfcp_erp_adapter_shutdown(adapter, 0, 125, req); return; } if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { dev_err(&adapter->ccw_device->dev, - "The adapter only supports older control block " - "versions, consider a microcode upgrade.\n"); + "The FCP adapter only supports older " + "control block versions\n"); zfcp_erp_adapter_shutdown(adapter, 0, 126, req); } } @@ -688,7 +623,6 @@ static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) { - struct zfcp_adapter *adapter = req->adapter; struct fsf_qtcb *qtcb = req->qtcb; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) @@ -697,38 +631,47 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) switch (qtcb->header.fsf_status) { case FSF_GOOD: zfcp_fsf_exchange_port_evaluate(req); - atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: zfcp_fsf_exchange_port_evaluate(req); - atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); zfcp_fsf_link_down_info_eval(req, 43, &qtcb->header.fsf_status_qual.link_down_info); break; } } -static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) +static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) { - spin_lock_bh(&queue->lock); - if (atomic_read(&queue->count)) + struct zfcp_qdio_queue *req_q = &adapter->req_q; + + spin_lock_bh(&adapter->req_q_lock); + if (atomic_read(&req_q->count)) return 1; - spin_unlock_bh(&queue->lock); + spin_unlock_bh(&adapter->req_q_lock); return 0; } +static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) +{ + unsigned int count = atomic_read(&adapter->req_q.count); + if (!count) + atomic_inc(&adapter->qdio_outb_full); + return count > 0; +} + static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) { long ret; - struct zfcp_qdio_queue *req_q = &adapter->req_q; - spin_unlock_bh(&req_q->lock); + spin_unlock_bh(&adapter->req_q_lock); ret = wait_event_interruptible_timeout(adapter->request_wq, - zfcp_fsf_sbal_check(req_q), 5 * HZ); + zfcp_fsf_sbal_check(adapter), 5 * HZ); if (ret > 0) return 0; + if (!ret) + atomic_inc(&adapter->qdio_outb_full); - spin_lock_bh(&req_q->lock); + spin_lock_bh(&adapter->req_q_lock); return -EIO; } @@ -765,7 +708,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, mempool_t *pool) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_qdio_queue *req_q = &adapter->req_q; @@ -867,10 +810,10 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter) { struct zfcp_fsf_req *req; struct fsf_status_read_buffer *sr_buf; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -910,7 +853,7 @@ failed_buf: zfcp_fsf_req_free(req); zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -980,11 +923,11 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, struct zfcp_unit *unit, int req_flags) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; - spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, req_flags, adapter->pool.fsf_req_abort); @@ -1013,7 +956,7 @@ out_error_free: zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return req; } @@ -1021,7 +964,6 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; struct zfcp_send_ct *send_ct = req->data; - struct zfcp_port *port = send_ct->port; struct fsf_qtcb_header *header = &req->qtcb->header; send_ct->status = -EINVAL; @@ -1040,17 +982,14 @@ static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) case FSF_ADAPTER_STATUS_AVAILABLE: switch (header->fsf_status_qual.word[0]){ case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: - zfcp_test_link(port); case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; } break; case FSF_ACCESS_DENIED: - zfcp_fsf_access_denied_port(req, port); break; case FSF_PORT_BOXED: - zfcp_erp_port_boxed(port, 49, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_RETRY; break; @@ -1101,12 +1040,12 @@ static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, struct zfcp_erp_action *erp_action) { - struct zfcp_port *port = ct->port; - struct zfcp_adapter *adapter = port->adapter; + struct zfcp_wka_port *wka_port = ct->wka_port; + struct zfcp_adapter *adapter = wka_port->adapter; struct zfcp_fsf_req *req; int ret = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1123,7 +1062,7 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, goto failed_send; req->handler = zfcp_fsf_send_ct_handler; - req->qtcb->header.port_handle = port->handle; + req->qtcb->header.port_handle = wka_port->handle; req->qtcb->bottom.support.service_class = FSF_CLASS_3; req->qtcb->bottom.support.timeout = ct->timeout; req->data = ct; @@ -1148,7 +1087,7 @@ failed_send: if (erp_action) erp_action->fsf_req = NULL; out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return ret; } @@ -1218,8 +1157,8 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) ZFCP_STATUS_COMMON_UNBLOCKED))) return -EBUSY; - spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, ZFCP_REQ_AUTO_CLEANUP, NULL); @@ -1228,8 +1167,8 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) goto out; } - ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, - FSF_MAX_SBALS_PER_ELS_REQ); + ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, 2); + if (ret) goto failed_send; @@ -1252,19 +1191,19 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els) failed_send: zfcp_fsf_req_free(req); out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return ret; } int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock_bh(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, @@ -1295,18 +1234,18 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_config *data) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1334,7 +1273,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1351,7 +1290,7 @@ out: */ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req; struct zfcp_adapter *adapter = erp_action->adapter; int retval = -EIO; @@ -1359,8 +1298,8 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock_bh(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, ZFCP_REQ_AUTO_CLEANUP, @@ -1385,7 +1324,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1398,15 +1337,15 @@ out: int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_port *data) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; int retval = -EIO; if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) return -EOPNOTSUPP; - spin_lock_bh(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock_bh(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, @@ -1427,7 +1366,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) wait_event(req->completion_wq, req->status & ZFCP_STATUS_FSFREQ_COMPLETED); @@ -1443,7 +1382,7 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) struct fsf_plogi *plogi; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (header->fsf_status) { case FSF_PORT_ALREADY_OPEN: @@ -1453,9 +1392,9 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) break; case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: dev_warn(&req->adapter->ccw_device->dev, - "The adapter is out of resources. The remote port " - "0x%016Lx could not be opened, disabling it.\n", - port->wwpn); + "Not enough FCP adapter resources to open " + "remote port 0x%016Lx\n", + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 31, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1467,8 +1406,8 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) break; case FSF_SQ_NO_RETRY_POSSIBLE: dev_warn(&req->adapter->ccw_device->dev, - "The remote port 0x%016Lx could not be " - "opened. Disabling it.\n", port->wwpn); + "Remote port 0x%016Lx could not be opened\n", + (unsigned long long)port->wwpn); zfcp_erp_port_failed(port, 32, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -1496,9 +1435,6 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) * another GID_PN straight after a port has been opened. * Alternately, an ADISC/PDISC ELS should suffice, as well. */ - if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) - break; - plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { if (plogi->serv_param.wwpn != port->wwpn) @@ -1514,9 +1450,6 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); } /** @@ -1526,12 +1459,12 @@ skip_fsfstatus: */ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1553,7 +1486,6 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) req->data = erp_action->port; req->erp_action = erp_action; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -1562,7 +1494,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1571,7 +1503,7 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) struct zfcp_port *port = req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (req->qtcb->header.fsf_status) { case FSF_PORT_HANDLE_NOT_VALID: @@ -1586,9 +1518,6 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) ZFCP_CLEAR); break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); } /** @@ -1598,12 +1527,12 @@ skip_fsfstatus: */ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1624,7 +1553,6 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) req->erp_action = erp_action; req->qtcb->header.port_handle = erp_action->port->handle; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -1633,7 +1561,131 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); + return retval; +} + +static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) +{ + struct zfcp_wka_port *wka_port = req->data; + struct fsf_qtcb_header *header = &req->qtcb->header; + + if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + goto out; + } + + switch (header->fsf_status) { + case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: + dev_warn(&req->adapter->ccw_device->dev, + "Opening WKA port 0x%x failed\n", wka_port->d_id); + case FSF_ADAPTER_STATUS_AVAILABLE: + req->status |= ZFCP_STATUS_FSFREQ_ERROR; + case FSF_ACCESS_DENIED: + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + break; + case FSF_PORT_ALREADY_OPEN: + case FSF_GOOD: + wka_port->handle = header->port_handle; + wka_port->status = ZFCP_WKA_PORT_ONLINE; + } +out: + wake_up(&wka_port->completion_wq); +} + +/** + * zfcp_fsf_open_wka_port - create and send open wka-port request + * @wka_port: pointer to struct zfcp_wka_port + * Returns: 0 on success, error otherwise + */ +int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) +{ + struct qdio_buffer_element *sbale; + struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_fsf_req *req; + int retval = -EIO; + + spin_lock_bh(&adapter->req_q_lock); + if (zfcp_fsf_req_sbal_get(adapter)) + goto out; + + req = zfcp_fsf_req_create(adapter, + FSF_QTCB_OPEN_PORT_WITH_DID, + ZFCP_REQ_AUTO_CLEANUP, + adapter->pool.fsf_req_erp); + if (unlikely(IS_ERR(req))) { + retval = PTR_ERR(req); + goto out; + } + + sbale = zfcp_qdio_sbale_req(req); + sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; + sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; + + req->handler = zfcp_fsf_open_wka_port_handler; + req->qtcb->bottom.support.d_id = wka_port->d_id; + req->data = wka_port; + + zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); + retval = zfcp_fsf_req_send(req); + if (retval) + zfcp_fsf_req_free(req); +out: + spin_unlock_bh(&adapter->req_q_lock); + return retval; +} + +static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) +{ + struct zfcp_wka_port *wka_port = req->data; + + if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { + req->status |= ZFCP_STATUS_FSFREQ_ERROR; + zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); + } + + wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wake_up(&wka_port->completion_wq); +} + +/** + * zfcp_fsf_close_wka_port - create and send close wka port request + * @erp_action: pointer to struct zfcp_erp_action + * Returns: 0 on success, error otherwise + */ +int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) +{ + struct qdio_buffer_element *sbale; + struct zfcp_adapter *adapter = wka_port->adapter; + struct zfcp_fsf_req *req; + int retval = -EIO; + + spin_lock_bh(&adapter->req_q_lock); + if (zfcp_fsf_req_sbal_get(adapter)) + goto out; + + req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, + ZFCP_REQ_AUTO_CLEANUP, + adapter->pool.fsf_req_erp); + if (unlikely(IS_ERR(req))) { + retval = PTR_ERR(req); + goto out; + } + + sbale = zfcp_qdio_sbale_req(req); + sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; + sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; + + req->handler = zfcp_fsf_close_wka_port_handler; + req->data = wka_port; + req->qtcb->header.port_handle = wka_port->handle; + + zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); + retval = zfcp_fsf_req_send(req); + if (retval) + zfcp_fsf_req_free(req); +out: + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1695,12 +1747,12 @@ skip_fsfstatus: */ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1731,7 +1783,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1746,7 +1798,7 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) int exclusive, readwrite; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | ZFCP_STATUS_COMMON_ACCESS_BOXED | @@ -1774,14 +1826,12 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) case FSF_LUN_SHARING_VIOLATION: if (header->fsf_status_qual.word[0]) dev_warn(&adapter->ccw_device->dev, - "FCP-LUN 0x%Lx at the remote port " - "with WWPN 0x%Lx " - "connected to the adapter " - "is already in use in LPAR%d, CSS%d.\n", - unit->fcp_lun, - unit->port->wwpn, - queue_designator->hla, - queue_designator->cssid); + "LUN 0x%Lx on port 0x%Lx is already in " + "use by CSS%d, MIF Image ID %x\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn, + queue_designator->cssid, + queue_designator->hla); else zfcp_act_eval_err(adapter, header->fsf_status_qual.word[2]); @@ -1792,9 +1842,10 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) break; case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: dev_warn(&adapter->ccw_device->dev, - "The adapter ran out of resources. There is no " - "handle available for unit 0x%016Lx on port 0x%016Lx.", - unit->fcp_lun, unit->port->wwpn); + "No handle is available for LUN " + "0x%016Lx on port 0x%016Lx\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 34, req); /* fall through */ case FSF_INVALID_COMMAND_OPTION: @@ -1831,26 +1882,29 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); dev_info(&adapter->ccw_device->dev, - "Read-only access for unit 0x%016Lx " - "on port 0x%016Lx.\n", - unit->fcp_lun, unit->port->wwpn); + "SCSI device at LUN 0x%016Lx on port " + "0x%016Lx opened read-only\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); } if (exclusive && !readwrite) { dev_err(&adapter->ccw_device->dev, - "Exclusive access of read-only unit " - "0x%016Lx on port 0x%016Lx not " - "supported, disabling unit.\n", - unit->fcp_lun, unit->port->wwpn); + "Exclusive read-only access not " + "supported (unit 0x%016Lx, " + "port 0x%016Lx)\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 35, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; zfcp_erp_unit_shutdown(unit, 0, 80, req); } else if (!exclusive && readwrite) { dev_err(&adapter->ccw_device->dev, - "Shared access of read-write unit " - "0x%016Lx on port 0x%016Lx not " - "supported, disabling unit.\n", - unit->fcp_lun, unit->port->wwpn); + "Shared read-write access not " + "supported (unit 0x%016Lx, port " + "0x%016Lx\n)", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_failed(unit, 36, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; zfcp_erp_unit_shutdown(unit, 0, 81, req); @@ -1858,9 +1912,6 @@ static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) } break; } - -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); } /** @@ -1870,12 +1921,12 @@ skip_fsfstatus: */ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -1901,8 +1952,6 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; - atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); - zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); if (retval) { @@ -1910,7 +1959,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -1919,7 +1968,7 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) struct zfcp_unit *unit = req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR) - goto skip_fsfstatus; + return; switch (req->qtcb->header.fsf_status) { case FSF_PORT_HANDLE_NOT_VALID: @@ -1949,8 +1998,6 @@ static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); break; } -skip_fsfstatus: - atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); } /** @@ -1960,12 +2007,12 @@ skip_fsfstatus: */ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_fsf_req *req; int retval = -EIO; - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, @@ -1986,7 +2033,6 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) req->data = erp_action->unit; req->erp_action = erp_action; erp_action->fsf_req = req; - atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); zfcp_fsf_start_erp_timer(req); retval = zfcp_fsf_req_send(req); @@ -1995,7 +2041,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) erp_action->fsf_req = NULL; } out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); return retval; } @@ -2156,21 +2202,21 @@ static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) break; case FSF_DIRECTION_INDICATOR_NOT_VALID: dev_err(&req->adapter->ccw_device->dev, - "Invalid data direction (%d) given for unit " - "0x%016Lx on port 0x%016Lx, shutting down " - "adapter.\n", + "Incorrect direction %d, unit 0x%016Lx on port " + "0x%016Lx closed\n", req->qtcb->bottom.io.data_direction, - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; case FSF_CMND_LENGTH_NOT_VALID: dev_err(&req->adapter->ccw_device->dev, - "An invalid control-data-block length field (%d) " - "was found in a command for unit 0x%016Lx on port " - "0x%016Lx. Shutting down adapter.\n", + "Incorrect CDB length %d, unit 0x%016Lx on " + "port 0x%016Lx closed\n", req->qtcb->bottom.io.fcp_cmnd_length, - unit->fcp_lun, unit->port->wwpn); + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; @@ -2201,6 +2247,20 @@ skip_fsfstatus: } } +static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) +{ + u32 *fcp_dl_ptr; + + /* + * fcp_dl_addr = start address of fcp_cmnd structure + + * size of fixed part + size of dynamically sized add_dcp_cdb field + * SEE FCP-2 documentation + */ + fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + + (fcp_cmd->add_fcp_cdb_length << 2)); + *fcp_dl_ptr = fcp_dl; +} + /** * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) * @adapter: adapter where scsi command is issued @@ -2223,8 +2283,8 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, ZFCP_STATUS_COMMON_UNBLOCKED))) return -EBUSY; - spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); @@ -2286,7 +2346,7 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + - fcp_cmnd_iu->add_fcp_cdb_length + sizeof(fcp_dl_t); + fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, scsi_sglist(scsi_cmnd), @@ -2296,10 +2356,10 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, retval = -EIO; else { dev_err(&adapter->ccw_device->dev, - "SCSI request too large. " - "Shutting down unit 0x%016Lx on port " - "0x%016Lx.\n", unit->fcp_lun, - unit->port->wwpn); + "Oversize data package, unit 0x%016Lx " + "on port 0x%016Lx closed\n", + (unsigned long long)unit->fcp_lun, + (unsigned long long)unit->port->wwpn); zfcp_erp_unit_shutdown(unit, 0, 131, req); retval = -EINVAL; } @@ -2322,7 +2382,7 @@ failed_scsi_cmnd: zfcp_fsf_req_free(req); scsi_cmnd->host_scribble = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return retval; } @@ -2338,7 +2398,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, struct zfcp_unit *unit, u8 tm_flags, int req_flags) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; struct fcp_cmnd_iu *fcp_cmnd_iu; @@ -2346,8 +2406,8 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, ZFCP_STATUS_COMMON_UNBLOCKED))) return NULL; - spin_lock(&adapter->req_q.lock); - if (!atomic_read(&adapter->req_q.count)) + spin_lock(&adapter->req_q_lock); + if (!zfcp_fsf_sbal_available(adapter)) goto out; req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, adapter->pool.fsf_req_scsi); @@ -2362,7 +2422,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; req->qtcb->bottom.io.service_class = FSF_CLASS_3; req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + - sizeof(fcp_dl_t); + sizeof(u32); sbale = zfcp_qdio_sbale_req(req); sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; @@ -2379,7 +2439,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, zfcp_fsf_req_free(req); req = NULL; out: - spin_unlock(&adapter->req_q.lock); + spin_unlock(&adapter->req_q_lock); return req; } @@ -2398,7 +2458,7 @@ static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, struct zfcp_fsf_cfdc *fsf_cfdc) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; struct zfcp_fsf_req *req = NULL; struct fsf_qtcb_bottom_support *bottom; int direction, retval = -EIO, bytes; @@ -2417,7 +2477,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, return ERR_PTR(-EINVAL); } - spin_lock_bh(&adapter->req_q.lock); + spin_lock_bh(&adapter->req_q_lock); if (zfcp_fsf_req_sbal_get(adapter)) goto out; @@ -2447,7 +2507,7 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); retval = zfcp_fsf_req_send(req); out: - spin_unlock_bh(&adapter->req_q.lock); + spin_unlock_bh(&adapter->req_q_lock); if (!retval) { wait_event(req->completion_wq, diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index bf94b4da0763..fd3a88777ac8 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -71,13 +71,6 @@ #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 #define FSF_ELS_COMMAND_REJECTED 0x00000050 #define FSF_GENERIC_COMMAND_REJECTED 0x00000051 -#define FSF_OPERATION_PARTIALLY_SUCCESSFUL 0x00000052 -#define FSF_AUTHORIZATION_FAILURE 0x00000053 -#define FSF_CFDC_ERROR_DETECTED 0x00000054 -#define FSF_CONTROL_FILE_UPDATE_ERROR 0x00000055 -#define FSF_CONTROL_FILE_TOO_LARGE 0x00000056 -#define FSF_ACCESS_CONFLICT_DETECTED 0x00000057 -#define FSF_CONFLICTS_OVERRULED 0x00000058 #define FSF_PORT_BOXED 0x00000059 #define FSF_LUN_BOXED 0x0000005A #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B @@ -85,9 +78,7 @@ #define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 #define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 #define FSF_SBAL_MISMATCH 0x00000063 -#define FSF_OPEN_PORT_WITHOUT_PRLI 0x00000064 #define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD -#define FSF_FCP_RSP_AVAILABLE 0x000000AF #define FSF_UNKNOWN_COMMAND 0x000000E2 #define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 #define FSF_INVALID_COMMAND_OPTION 0x000000E5 @@ -102,20 +93,9 @@ #define FSF_SQ_RETRY_IF_POSSIBLE 0x02 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 -#define FSF_SQ_ULP_PROGRAMMING_ERROR 0x05 #define FSF_SQ_COMMAND_ABORTED 0x06 #define FSF_SQ_NO_RETRY_POSSIBLE 0x07 -/* FSF status qualifier for CFDC commands */ -#define FSF_SQ_CFDC_HARDENED_ON_SE 0x00000000 -#define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE 0x00000001 -#define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2 0x00000002 -/* CFDC subtable codes */ -#define FSF_SQ_CFDC_SUBTABLE_OS 0x0001 -#define FSF_SQ_CFDC_SUBTABLE_PORT_WWPN 0x0002 -#define FSF_SQ_CFDC_SUBTABLE_PORT_DID 0x0003 -#define FSF_SQ_CFDC_SUBTABLE_LUN 0x0004 - /* FSF status qualifier (most significant 4 bytes), local link down */ #define FSF_PSQ_LINK_NO_LIGHT 0x00000004 #define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 @@ -145,7 +125,6 @@ #define FSF_STATUS_READ_LINK_UP 0x00000006 #define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 #define FSF_STATUS_READ_CFDC_UPDATED 0x0000000A -#define FSF_STATUS_READ_CFDC_HARDENED 0x0000000B #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C /* status subtypes in status read buffer */ @@ -159,20 +138,9 @@ /* status subtypes for unsolicited status notification lost */ #define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 -#define FSF_STATUS_READ_SUB_SENSE_DATA 0x00000002 -#define FSF_STATUS_READ_SUB_LINK_STATUS 0x00000004 -#define FSF_STATUS_READ_SUB_PORT_CLOSED 0x00000008 -#define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD 0x00000010 #define FSF_STATUS_READ_SUB_ACT_UPDATED 0x00000020 -#define FSF_STATUS_READ_SUB_ACT_HARDENED 0x00000040 -#define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080 - -/* status subtypes for CFDC */ -#define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE 0x00000002 -#define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F /* topologie that is detected by the adapter */ -#define FSF_TOPO_ERROR 0x00000000 #define FSF_TOPO_P2P 0x00000001 #define FSF_TOPO_FABRIC 0x00000002 #define FSF_TOPO_AL 0x00000003 @@ -180,17 +148,13 @@ /* data direction for FCP commands */ #define FSF_DATADIR_WRITE 0x00000001 #define FSF_DATADIR_READ 0x00000002 -#define FSF_DATADIR_READ_WRITE 0x00000003 #define FSF_DATADIR_CMND 0x00000004 /* fc service class */ -#define FSF_CLASS_1 0x00000001 -#define FSF_CLASS_2 0x00000002 #define FSF_CLASS_3 0x00000003 /* SBAL chaining */ #define FSF_MAX_SBALS_PER_REQ 36 -#define FSF_MAX_SBALS_PER_ELS_REQ 2 /* logging space behind QTCB */ #define FSF_QTCB_LOG_SIZE 1024 @@ -200,50 +164,16 @@ #define FSF_FEATURE_LUN_SHARING 0x00000004 #define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 #define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 -#define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 #define FSF_FEATURE_UPDATE_ALERT 0x00000100 #define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 /* host connection features */ #define FSF_FEATURE_NPIV_MODE 0x00000001 -#define FSF_FEATURE_VM_ASSIGNED_WWPN 0x00000002 /* option */ #define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 -#define FSF_OPEN_LUN_REPLICATE_SENSE 0x00000002 - -/* adapter types */ -#define FSF_ADAPTER_TYPE_FICON 0x00000001 -#define FSF_ADAPTER_TYPE_FICON_EXPRESS 0x00000002 - -/* port types */ -#define FSF_HBA_PORTTYPE_UNKNOWN 0x00000001 -#define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 -#define FSF_HBA_PORTTYPE_NPORT 0x00000005 -#define FSF_HBA_PORTTYPE_PTP 0x00000021 -/* following are not defined and used by FSF Spec - but are additionally defined by FC-HBA */ -#define FSF_HBA_PORTTYPE_OTHER 0x00000002 -#define FSF_HBA_PORTTYPE_NOTPRESENT 0x00000003 -#define FSF_HBA_PORTTYPE_NLPORT 0x00000006 -#define FSF_HBA_PORTTYPE_FLPORT 0x00000007 -#define FSF_HBA_PORTTYPE_FPORT 0x00000008 -#define FSF_HBA_PORTTYPE_LPORT 0x00000020 - -/* port states */ -#define FSF_HBA_PORTSTATE_UNKNOWN 0x00000001 -#define FSF_HBA_PORTSTATE_ONLINE 0x00000002 -#define FSF_HBA_PORTSTATE_OFFLINE 0x00000003 -#define FSF_HBA_PORTSTATE_LINKDOWN 0x00000006 -#define FSF_HBA_PORTSTATE_ERROR 0x00000007 - -/* IO states of adapter */ -#define FSF_IOSTAT_NPORT_RJT 0x00000004 -#define FSF_IOSTAT_FABRIC_RJT 0x00000005 -#define FSF_IOSTAT_LS_RJT 0x00000009 /* open LUN access flags*/ -#define FSF_UNIT_ACCESS_OPEN_LUN_ALLOWED 0x01000000 #define FSF_UNIT_ACCESS_EXCLUSIVE 0x02000000 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER 0x10000000 @@ -265,11 +195,6 @@ struct fsf_queue_designator { u32 res1; } __attribute__ ((packed)); -struct fsf_port_closed_payload { - struct fsf_queue_designator queue_designator; - u32 port_handle; -} __attribute__ ((packed)); - struct fsf_bit_error_payload { u32 res1; u32 link_failure_error_count; diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 69d632d851d9..3e05080e62d4 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -28,7 +28,7 @@ static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal) return 0; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale(struct zfcp_qdio_queue *q, int sbal_idx, int sbale_idx) { return &q->sbal[sbal_idx]->element[sbale_idx]; @@ -57,7 +57,7 @@ void zfcp_qdio_free(struct zfcp_adapter *adapter) static void zfcp_qdio_handler_error(struct zfcp_adapter *adapter, u8 id) { - dev_warn(&adapter->ccw_device->dev, "QDIO problem occurred.\n"); + dev_warn(&adapter->ccw_device->dev, "A QDIO problem occurred\n"); zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | @@ -145,7 +145,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, { struct zfcp_adapter *adapter = (struct zfcp_adapter *) parm; struct zfcp_qdio_queue *queue = &adapter->resp_q; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int sbal_idx, sbale_idx, sbal_no; if (unlikely(qdio_err)) { @@ -174,8 +174,8 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, if (unlikely(!(sbale->flags & SBAL_FLAGS_LAST_ENTRY))) dev_warn(&adapter->ccw_device->dev, - "Protocol violation by adapter. " - "Continuing operations.\n"); + "A QDIO protocol error occurred, " + "operations continue\n"); } /* @@ -190,8 +190,7 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err, * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, 0); } @@ -201,8 +200,7 @@ zfcp_qdio_sbale_req(struct zfcp_fsf_req *req) * @fsf_req: pointer to struct fsf_req * Returns: pointer to qdio_buffer_element (SBALE) structure */ -volatile struct qdio_buffer_element * -zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) +struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req) { return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, req->sbale_curr); @@ -216,10 +214,10 @@ static void zfcp_qdio_sbal_limit(struct zfcp_fsf_req *fsf_req, int max_sbals) % QDIO_MAX_BUFFERS_PER_Q; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* set last entry flag in current SBALE of current SBAL */ sbale = zfcp_qdio_sbale_curr(fsf_req); @@ -250,7 +248,7 @@ zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) return sbale; } -static volatile struct qdio_buffer_element * +static struct qdio_buffer_element * zfcp_qdio_sbale_next(struct zfcp_fsf_req *fsf_req, unsigned long sbtype) { if (fsf_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL) @@ -273,7 +271,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, unsigned int sbtype, void *start_addr, unsigned int total_length) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; unsigned long remaining, length; void *addr; @@ -282,6 +280,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, addr += length, remaining -= length) { sbale = zfcp_qdio_sbale_next(fsf_req, sbtype); if (!sbale) { + atomic_inc(&fsf_req->adapter->qdio_outb_full); zfcp_qdio_undo_sbals(fsf_req); return -EINVAL; } @@ -307,7 +306,7 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req, int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype, struct scatterlist *sg, int max_sbals) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int retval, bytes = 0; /* figure out last allowed SBAL */ @@ -344,10 +343,10 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) int first = fsf_req->sbal_first; int count = fsf_req->sbal_number; int retval, pci, pci_batch; - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; /* acknowledgements for transferred buffers */ - pci_batch = req_q->pci_batch + count; + pci_batch = adapter->req_q_pci_batch + count; if (unlikely(pci_batch >= ZFCP_QDIO_PCI_INTERVAL)) { pci_batch %= ZFCP_QDIO_PCI_INTERVAL; pci = first + count - (pci_batch + 1); @@ -367,7 +366,7 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req) atomic_sub(count, &req_q->count); req_q->first += count; req_q->first %= QDIO_MAX_BUFFERS_PER_Q; - req_q->pci_batch = pci_batch; + adapter->req_q_pci_batch = pci_batch; return 0; } @@ -418,14 +417,14 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) struct zfcp_qdio_queue *req_q; int first, count; - if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) return; /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ req_q = &adapter->req_q; - spin_lock_bh(&req_q->lock); + spin_lock_bh(&adapter->req_q_lock); atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status); - spin_unlock_bh(&req_q->lock); + spin_unlock_bh(&adapter->req_q_lock); qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); @@ -438,7 +437,7 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) } req_q->first = 0; atomic_set(&req_q->count, 0); - req_q->pci_batch = 0; + adapter->req_q_pci_batch = 0; adapter->resp_q.first = 0; atomic_set(&adapter->resp_q.count, 0); } @@ -450,23 +449,17 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) */ int zfcp_qdio_open(struct zfcp_adapter *adapter) { - volatile struct qdio_buffer_element *sbale; + struct qdio_buffer_element *sbale; int cc; - if (atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) + if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) return -EIO; - if (qdio_establish(&adapter->qdio_init_data)) { - dev_err(&adapter->ccw_device->dev, - "Establish of QDIO queues failed.\n"); - return -EIO; - } + if (qdio_establish(&adapter->qdio_init_data)) + goto failed_establish; - if (qdio_activate(adapter->ccw_device)) { - dev_err(&adapter->ccw_device->dev, - "Activate of QDIO queues failed.\n"); + if (qdio_activate(adapter->ccw_device)) goto failed_qdio; - } for (cc = 0; cc < QDIO_MAX_BUFFERS_PER_Q; cc++) { sbale = &(adapter->resp_q.sbal[cc]->element[0]); @@ -476,20 +469,20 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter) } if (do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_INPUT, 0, 0, - QDIO_MAX_BUFFERS_PER_Q)) { - dev_err(&adapter->ccw_device->dev, - "Init of QDIO response queue failed.\n"); + QDIO_MAX_BUFFERS_PER_Q)) goto failed_qdio; - } /* set index of first avalable SBALS / number of available SBALS */ adapter->req_q.first = 0; atomic_set(&adapter->req_q.count, QDIO_MAX_BUFFERS_PER_Q); - adapter->req_q.pci_batch = 0; + adapter->req_q_pci_batch = 0; return 0; failed_qdio: qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR); +failed_establish: + dev_err(&adapter->ccw_device->dev, + "Setting up the QDIO connection to the FCP adapter failed\n"); return -EIO; } diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index aeae56b00b45..ca8f85f3dad4 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -21,20 +21,6 @@ char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu) return fcp_sns_info_ptr; } -void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, fcp_dl_t fcp_dl) -{ - fcp_dl_t *fcp_dl_ptr; - - /* - * fcp_dl_addr = start address of fcp_cmnd structure + - * size of fixed part + size of dynamically sized add_dcp_cdb field - * SEE FCP-2 documentation - */ - fcp_dl_ptr = (fcp_dl_t *) ((unsigned char *) &fcp_cmd[1] + - (fcp_cmd->add_fcp_cdb_length << 2)); - *fcp_dl_ptr = fcp_dl; -} - static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt) { struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata; @@ -119,13 +105,17 @@ static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter, { struct zfcp_port *port; struct zfcp_unit *unit; + int scsi_lun; list_for_each_entry(port, &adapter->port_list_head, list) { if (!port->rport || (id != port->rport->scsi_target_id)) continue; - list_for_each_entry(unit, &port->unit_list_head, list) - if (lun == unit->scsi_lun) + list_for_each_entry(unit, &port->unit_list_head, list) { + scsi_lun = scsilun_to_int( + (struct scsi_lun *)&unit->fcp_lun); + if (lun == scsi_lun) return unit; + } } return NULL; @@ -183,7 +173,6 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) return retval; } fsf_req->data = NULL; - fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING; /* don't access old fsf_req after releasing the abort_lock */ write_unlock_irqrestore(&adapter->abort_lock, flags); @@ -294,7 +283,8 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) sizeof (struct zfcp_adapter *)); if (!adapter->scsi_host) { dev_err(&adapter->ccw_device->dev, - "registration with SCSI stack failed."); + "Registering the FCP device with the " + "SCSI stack failed\n"); return -EIO; } @@ -312,7 +302,6 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter) scsi_host_put(adapter->scsi_host); return -EIO; } - atomic_set_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); return 0; } @@ -336,7 +325,6 @@ void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter) scsi_remove_host(shost); scsi_host_put(shost); adapter->scsi_host = NULL; - atomic_clear_mask(ZFCP_STATUS_ADAPTER_REGISTERED, &adapter->status); return; } diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 2e85c6c49e7d..ca9293ba1766 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -26,9 +26,9 @@ static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n", atomic_read(&adapter->status)); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n", - adapter->peer_wwnn); + (unsigned long long) adapter->peer_wwnn); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n", - adapter->peer_wwpn); + (unsigned long long) adapter->peer_wwpn); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n", adapter->peer_d_id); ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n", @@ -135,8 +135,9 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, { struct zfcp_adapter *adapter = dev_get_drvdata(dev); struct zfcp_port *port; - wwn_t wwpn; + u64 wwpn; int retval = 0; + LIST_HEAD(port_remove_lh); down(&zfcp_data.config_sema); if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) { @@ -144,7 +145,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &wwpn)) { + if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) { retval = -EINVAL; goto out; } @@ -154,7 +155,7 @@ static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, if (port && (atomic_read(&port->refcount) == 0)) { zfcp_port_get(port); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); - list_move(&port->list, &adapter->port_remove_lh); + list_move(&port->list, &port_remove_lh); } else port = NULL; write_unlock_irq(&zfcp_data.config_lock); @@ -200,7 +201,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, { struct zfcp_port *port = dev_get_drvdata(dev); struct zfcp_unit *unit; - fcp_lun_t fcp_lun; + u64 fcp_lun; int retval = -EINVAL; down(&zfcp_data.config_sema); @@ -209,7 +210,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &fcp_lun)) + if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) goto out; unit = zfcp_unit_enqueue(port, fcp_lun); @@ -233,8 +234,9 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, { struct zfcp_port *port = dev_get_drvdata(dev); struct zfcp_unit *unit; - fcp_lun_t fcp_lun; + u64 fcp_lun; int retval = 0; + LIST_HEAD(unit_remove_lh); down(&zfcp_data.config_sema); if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) { @@ -242,7 +244,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, goto out; } - if (strict_strtoull(buf, 0, &fcp_lun)) { + if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) { retval = -EINVAL; goto out; } @@ -252,7 +254,7 @@ static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, if (unit && (atomic_read(&unit->refcount) == 0)) { zfcp_unit_get(unit); atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status); - list_move(&unit->list, &port->unit_remove_lh); + list_move(&unit->list, &unit_remove_lh); } else unit = NULL; @@ -273,22 +275,7 @@ out: } static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); -static struct attribute *zfcp_port_ns_attrs[] = { - &dev_attr_port_failed.attr, - &dev_attr_port_in_recovery.attr, - &dev_attr_port_status.attr, - &dev_attr_port_access_denied.attr, - NULL -}; - -/** - * zfcp_sysfs_ns_port_attrs - sysfs attributes for nameserver - */ -struct attribute_group zfcp_sysfs_ns_port_attrs = { - .attrs = zfcp_port_ns_attrs, -}; - -static struct attribute *zfcp_port_no_ns_attrs[] = { +static struct attribute *zfcp_port_attrs[] = { &dev_attr_unit_add.attr, &dev_attr_unit_remove.attr, &dev_attr_port_failed.attr, @@ -302,7 +289,7 @@ static struct attribute *zfcp_port_no_ns_attrs[] = { * zfcp_sysfs_port_attrs - sysfs attributes for all other ports */ struct attribute_group zfcp_sysfs_port_attrs = { - .attrs = zfcp_port_no_ns_attrs, + .attrs = zfcp_port_attrs, }; static struct attribute *zfcp_unit_attrs[] = { @@ -394,9 +381,11 @@ static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", - unit->port->adapter->ccw_device->dev.bus_id); -ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn); -ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun); + dev_name(&unit->port->adapter->ccw_device->dev)); +ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", + (unsigned long long) unit->port->wwpn); +ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", + (unsigned long long) unit->fcp_lun); struct device_attribute *zfcp_sysfs_sdev_attrs[] = { &dev_attr_fcp_lun, @@ -487,10 +476,23 @@ ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", ZFCP_SHOST_ATTR(seconds_active, "%llu\n", (unsigned long long) stat_info.seconds_act); +static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *scsi_host = class_to_shost(dev); + struct zfcp_adapter *adapter = + (struct zfcp_adapter *) scsi_host->hostdata[0]; + + return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full)); +} +static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); + struct device_attribute *zfcp_sysfs_shost_attrs[] = { &dev_attr_utilization, &dev_attr_requests, &dev_attr_megabytes, &dev_attr_seconds_active, + &dev_attr_queue_full, NULL }; |