diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-11 08:50:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-11 08:50:01 -0700 |
| commit | 37d9869ed928268409b48f52c57449918c0fd307 (patch) | |
| tree | 7dd954260d723d1e0716b6432ba07b5c7be7f2ac /drivers | |
| parent | 098ef215b1e87cff51f983bae4e4e1358b932ec9 (diff) | |
| parent | 89d49841e9e7a90b04b036b7dbe7521b55edbe24 (diff) | |
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (27 commits)
[S390] Fix checkstack for s390
[S390] fix initialization of stp
[S390] 3215: Remove tasklet.
[S390] console flush on panic / reboot
[S390] introduce dirty bit for kvm live migration
[S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O
[S390] xpram: per device block request queues.
[S390] dasd: fix message flood for unsolicited interrupts
[S390] Move private simple udelay function to arch/s390/lib/delay.c.
[S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support.
[S390] ptrace changes
[S390] s390: use sys_pause for 31bit pause entry point
[S390] qdio enhanced SIGA (iqdio) support.
[S390] cio: fix cio_tpi.
[S390] cio: Correct use of ! and &
[S390] cio: inline assembly cleanup
[S390] bus_id -> dev_set_name() for css and ccw busses
[S390] bus_id ->dev_name() conversions in qdio
[S390] Use s390_root_dev_* in kvm_virtio.
[S390] more bus_id -> dev_name conversions
...
Diffstat (limited to 'drivers')
53 files changed, 1045 insertions, 513 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 e3b5c4d3036e..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); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 9481e4a3f76e..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); } @@ -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", 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 9a50f245774b..3ac2c2019f5e 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -269,8 +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) 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 326f4cc7f92c..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)); @@ -171,7 +175,7 @@ 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)); @@ -232,7 +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); @@ -269,7 +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 @@ -304,7 +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 @@ -340,7 +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); @@ -404,7 +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; @@ -454,7 +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; @@ -571,8 +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) @@ -677,6 +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; @@ -827,6 +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) @@ -846,19 +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) { @@ -874,7 +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; } @@ -882,7 +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; @@ -892,7 +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/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..141b2bb7b3cf 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; @@ -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???"); } @@ -4081,7 +4081,7 @@ 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) { 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 24255e42dc30..3b56220fb900 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -283,8 +283,8 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun) unit->port = port; unit->fcp_lun = fcp_lun; - snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", - (unsigned long long) 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); @@ -610,8 +610,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn, atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status); atomic_set(&port->refcount, 0); - snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", - (unsigned long long) wwpn); + 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; diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 73eb41580f25..8a13071c444c 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -596,7 +596,7 @@ struct zfcp_data { struct semaphore config_sema; /* serialises configuration changes */ atomic_t loglevel; /* current loglevel */ - char init_busid[BUS_ID_SIZE]; + char init_busid[20]; u64 init_wwpn; u64 init_fcp_lun; struct kmem_cache *fsf_req_qtcb_cache; @@ -619,7 +619,7 @@ struct zfcp_fsf_req_qtcb { #define ZFCP_SET 0x00000100 #define ZFCP_CLEAR 0x00000200 -#define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id) +#define zfcp_get_busid_by_adapter(adapter) (dev_name(&adapter->ccw_device->dev)) /* * Helper functions for request ID management. diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 782313131870..9040f738ff33 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -1376,7 +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); diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c index 2809d789b55c..ca9293ba1766 100644 --- a/drivers/s390/scsi/zfcp_sysfs.c +++ b/drivers/s390/scsi/zfcp_sysfs.c @@ -381,7 +381,7 @@ 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); + 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", |