diff options
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/Makefile | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/chp.c | 3 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc.h | 24 | ||||
| -rw-r--r-- | drivers/s390/cio/cio.c | 56 | ||||
| -rw-r--r-- | drivers/s390/cio/cio.h | 4 | ||||
| -rw-r--r-- | drivers/s390/cio/css.c | 32 | ||||
| -rw-r--r-- | drivers/s390/cio/device.c | 172 | ||||
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 22 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio.h | 4 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_debug.c | 55 | ||||
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 4 | ||||
| -rw-r--r-- | drivers/s390/cio/scsw.c | 843 |
12 files changed, 167 insertions, 1054 deletions
diff --git a/drivers/s390/cio/Makefile b/drivers/s390/cio/Makefile index adb3dd301528..fa4c9662f65e 100644 --- a/drivers/s390/cio/Makefile +++ b/drivers/s390/cio/Makefile @@ -2,7 +2,7 @@ # Makefile for the S/390 common i/o drivers # -obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o scsw.o \ +obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o \ fcx.o itcw.o crw.o ccw_device-objs += device.o device_fsm.o device_ops.o ccw_device-objs += device_id.o device_pgid.o device_status.o diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 3e5f304ad88f..40002830d48a 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -417,7 +417,8 @@ int chp_new(struct chp_id chpid) if (ret) { CIO_MSG_EVENT(0, "Could not register chp%x.%02x: %d\n", chpid.cssid, chpid.id, ret); - goto out_free; + put_device(&chp->dev); + goto out; } ret = sysfs_create_group(&chp->dev.kobj, &chp_attr_group); if (ret) { diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index 425e8f89a6c5..37aa611d4ac5 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -37,29 +37,6 @@ struct channel_path_desc { struct channel_path; -struct css_general_char { - u64 : 12; - u32 dynio : 1; /* bit 12 */ - u32 : 28; - u32 aif : 1; /* bit 41 */ - u32 : 3; - u32 mcss : 1; /* bit 45 */ - u32 fcs : 1; /* bit 46 */ - u32 : 1; - u32 ext_mb : 1; /* bit 48 */ - u32 : 7; - u32 aif_tdd : 1; /* bit 56 */ - u32 : 1; - u32 qebsm : 1; /* bit 58 */ - u32 : 8; - u32 aif_osa : 1; /* bit 67 */ - u32 : 14; - u32 cib : 1; /* bit 82 */ - u32 : 5; - u32 fcx : 1; /* bit 88 */ - u32 : 7; -}__attribute__((packed)); - struct css_chsc_char { u64 res; u64 : 20; @@ -72,7 +49,6 @@ struct css_chsc_char { u32 : 19; }__attribute__((packed)); -extern struct css_general_char css_general_characteristics; extern struct css_chsc_char css_chsc_characteristics; struct chsc_ssd_info { diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 5ec7789bd9d8..138124fcfcad 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -139,12 +139,11 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ __u8 lpm, /* logical path mask */ __u8 key) /* storage key */ { - char dbf_txt[15]; int ccode; union orb *orb; - CIO_TRACE_EVENT(4, "stIO"); - CIO_TRACE_EVENT(4, dev_name(&sch->dev)); + CIO_TRACE_EVENT(5, "stIO"); + CIO_TRACE_EVENT(5, dev_name(&sch->dev)); orb = &to_io_private(sch)->orb; memset(orb, 0, sizeof(union orb)); @@ -169,8 +168,7 @@ cio_start_key (struct subchannel *sch, /* subchannel structure */ ccode = ssch(sch->schid, orb); /* process condition code */ - sprintf(dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT(4, dbf_txt); + CIO_HEX_EVENT(5, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -201,16 +199,14 @@ cio_start (struct subchannel *sch, struct ccw1 *cpa, __u8 lpm) int cio_resume (struct subchannel *sch) { - char dbf_txt[15]; int ccode; - CIO_TRACE_EVENT (4, "resIO"); + CIO_TRACE_EVENT(4, "resIO"); CIO_TRACE_EVENT(4, dev_name(&sch->dev)); ccode = rsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (4, dbf_txt); + CIO_HEX_EVENT(4, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -235,13 +231,12 @@ cio_resume (struct subchannel *sch) int cio_halt(struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "haltIO"); + CIO_TRACE_EVENT(2, "haltIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* @@ -249,8 +244,7 @@ cio_halt(struct subchannel *sch) */ ccode = hsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -270,13 +264,12 @@ cio_halt(struct subchannel *sch) int cio_clear(struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "clearIO"); + CIO_TRACE_EVENT(2, "clearIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); /* @@ -284,8 +277,7 @@ cio_clear(struct subchannel *sch) */ ccode = csch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: @@ -306,19 +298,17 @@ cio_clear(struct subchannel *sch) int cio_cancel (struct subchannel *sch) { - char dbf_txt[15]; int ccode; if (!sch) return -ENODEV; - CIO_TRACE_EVENT (2, "cancelIO"); + CIO_TRACE_EVENT(2, "cancelIO"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); ccode = xsch (sch->schid); - sprintf (dbf_txt, "ccode:%d", ccode); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ccode, sizeof(ccode)); switch (ccode) { case 0: /* success */ @@ -429,11 +419,10 @@ EXPORT_SYMBOL_GPL(cio_update_schib); */ int cio_enable_subchannel(struct subchannel *sch, u32 intparm) { - char dbf_txt[15]; int retry; int ret; - CIO_TRACE_EVENT (2, "ensch"); + CIO_TRACE_EVENT(2, "ensch"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) @@ -460,8 +449,7 @@ int cio_enable_subchannel(struct subchannel *sch, u32 intparm) } else break; } - sprintf (dbf_txt, "ret:%d", ret); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ret, sizeof(ret)); return ret; } EXPORT_SYMBOL_GPL(cio_enable_subchannel); @@ -472,11 +460,10 @@ EXPORT_SYMBOL_GPL(cio_enable_subchannel); */ int cio_disable_subchannel(struct subchannel *sch) { - char dbf_txt[15]; int retry; int ret; - CIO_TRACE_EVENT (2, "dissch"); + CIO_TRACE_EVENT(2, "dissch"); CIO_TRACE_EVENT(2, dev_name(&sch->dev)); if (sch_is_pseudo_sch(sch)) @@ -495,8 +482,7 @@ int cio_disable_subchannel(struct subchannel *sch) } else break; } - sprintf (dbf_txt, "ret:%d", ret); - CIO_TRACE_EVENT (2, dbf_txt); + CIO_HEX_EVENT(2, &ret, sizeof(ret)); return ret; } EXPORT_SYMBOL_GPL(cio_disable_subchannel); @@ -578,11 +564,6 @@ int cio_validate_subchannel(struct subchannel *sch, struct subchannel_id schid) goto out; } mutex_init(&sch->reg_mutex); - /* Set a name for the subchannel */ - if (cio_is_console(schid)) - sch->dev.init_name = cio_get_console_sch_name(schid); - else - dev_set_name(&sch->dev, "0.%x.%04x", schid.ssid, schid.sch_no); /* * The first subchannel that is not-operational (ccode==3) @@ -686,7 +667,6 @@ void __irq_entry do_IRQ(struct pt_regs *regs) #ifdef CONFIG_CCW_CONSOLE static struct subchannel console_subchannel; -static char console_sch_name[10] = "0.x.xxxx"; static struct io_subchannel_private console_priv; static int console_subchannel_in_use; @@ -873,12 +853,6 @@ cio_get_console_subchannel(void) return &console_subchannel; } -const char *cio_get_console_sch_name(struct subchannel_id schid) -{ - snprintf(console_sch_name, 10, "0.%x.%04x", schid.ssid, schid.sch_no); - return (const char *)console_sch_name; -} - #endif static int __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 5150fba742ac..2e43558c704b 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -133,15 +133,11 @@ extern int cio_is_console(struct subchannel_id); extern struct subchannel *cio_get_console_subchannel(void); extern spinlock_t * cio_get_console_lock(void); extern void *cio_get_console_priv(void); -extern const char *cio_get_console_sch_name(struct subchannel_id schid); -extern const char *cio_get_console_cdev_name(struct subchannel *sch); #else #define cio_is_console(schid) 0 #define cio_get_console_subchannel() NULL #define cio_get_console_lock() NULL #define cio_get_console_priv() NULL -#define cio_get_console_sch_name(schid) NULL -#define cio_get_console_cdev_name(sch) NULL #endif #endif diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 85d43c6bcb66..e995123fd805 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -152,24 +152,15 @@ css_alloc_subchannel(struct subchannel_id schid) } static void -css_free_subchannel(struct subchannel *sch) -{ - if (sch) { - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); - kfree(sch->lock); - kfree(sch); - } -} - -static void css_subchannel_release(struct device *dev) { struct subchannel *sch; sch = to_subchannel(dev); if (!cio_is_console(sch->schid)) { + /* Reset intparm to zeroes. */ + sch->config.intparm = 0; + cio_commit_config(sch); kfree(sch->lock); kfree(sch); } @@ -180,6 +171,8 @@ static int css_sch_device_register(struct subchannel *sch) int ret; mutex_lock(&sch->reg_mutex); + dev_set_name(&sch->dev, "0.%x.%04x", sch->schid.ssid, + sch->schid.sch_no); ret = device_register(&sch->dev); mutex_unlock(&sch->reg_mutex); return ret; @@ -327,7 +320,7 @@ int css_probe_device(struct subchannel_id schid) return PTR_ERR(sch); ret = css_register_subchannel(sch); if (ret) - css_free_subchannel(sch); + put_device(&sch->dev); return ret; } @@ -644,7 +637,10 @@ __init_channel_subsystem(struct subchannel_id schid, void *data) * not working) so we do it now. This is true e.g. for the * console subchannel. */ - css_register_subchannel(sch); + if (css_register_subchannel(sch)) { + if (!cio_is_console(schid)) + put_device(&sch->dev); + } return 0; } @@ -661,8 +657,8 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high) css->global_pgid.pgid_high.cpu_addr = 0; #endif } - css->global_pgid.cpu_id = ((cpuid_t *) __LC_CPUID)->ident; - css->global_pgid.cpu_model = ((cpuid_t *) __LC_CPUID)->machine; + css->global_pgid.cpu_id = S390_lowcore.cpu_id.ident; + css->global_pgid.cpu_model = S390_lowcore.cpu_id.machine; css->global_pgid.tod_high = tod_high; } @@ -920,8 +916,10 @@ init_channel_subsystem (void) goto out_device; } ret = device_register(&css->pseudo_subchannel->dev); - if (ret) + if (ret) { + put_device(&css->pseudo_subchannel->dev); goto out_file; + } } ret = register_reboot_notifier(&css_reboot_notifier); if (ret) diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index d593bc76afe3..0f95405c2c5e 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -307,8 +307,11 @@ int ccw_device_is_orphan(struct ccw_device *cdev) static void ccw_device_unregister(struct ccw_device *cdev) { - if (test_and_clear_bit(1, &cdev->private->registered)) + if (test_and_clear_bit(1, &cdev->private->registered)) { device_del(&cdev->dev); + /* Release reference from device_initialize(). */ + put_device(&cdev->dev); + } } static void ccw_device_remove_orphan_cb(struct work_struct *work) @@ -319,7 +322,6 @@ static void ccw_device_remove_orphan_cb(struct work_struct *work) priv = container_of(work, struct ccw_device_private, kick_work); cdev = priv->cdev; ccw_device_unregister(cdev); - put_device(&cdev->dev); /* Release cdev reference for workqueue processing. */ put_device(&cdev->dev); } @@ -333,15 +335,15 @@ ccw_device_remove_disconnected(struct ccw_device *cdev) * Forced offline in disconnected state means * 'throw away device'. */ - /* Get cdev reference for workqueue processing. */ - if (!get_device(&cdev->dev)) - return; if (ccw_device_is_orphan(cdev)) { /* * Deregister ccw device. * Unfortunately, we cannot do this directly from the * attribute method. */ + /* Get cdev reference for workqueue processing. */ + if (!get_device(&cdev->dev)) + return; spin_lock_irqsave(cdev->ccwlock, flags); cdev->private->state = DEV_STATE_NOT_OPER; spin_unlock_irqrestore(cdev->ccwlock, flags); @@ -380,30 +382,34 @@ int ccw_device_set_offline(struct ccw_device *cdev) } cdev->online = 0; spin_lock_irq(cdev->ccwlock); - ret = ccw_device_offline(cdev); - if (ret == -ENODEV) { - if (cdev->private->state != DEV_STATE_NOT_OPER) { - cdev->private->state = DEV_STATE_OFFLINE; - dev_fsm_event(cdev, DEV_EVENT_NOTOPER); - } + /* Wait until a final state or DISCONNECTED is reached */ + while (!dev_fsm_final_state(cdev) && + cdev->private->state != DEV_STATE_DISCONNECTED) { spin_unlock_irq(cdev->ccwlock); - /* Give up reference from ccw_device_set_online(). */ - put_device(&cdev->dev); - return ret; + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + spin_lock_irq(cdev->ccwlock); } + ret = ccw_device_offline(cdev); + if (ret) + goto error; spin_unlock_irq(cdev->ccwlock); - if (ret == 0) { - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - /* Give up reference from ccw_device_set_online(). */ - put_device(&cdev->dev); - } else { - CIO_MSG_EVENT(0, "ccw_device_offline returned %d, " - "device 0.%x.%04x\n", - ret, cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); - cdev->online = 1; - } - return ret; + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + /* Give up reference from ccw_device_set_online(). */ + put_device(&cdev->dev); + return 0; + +error: + CIO_MSG_EVENT(0, "ccw_device_offline returned %d, device 0.%x.%04x\n", + ret, cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + cdev->private->state = DEV_STATE_OFFLINE; + dev_fsm_event(cdev, DEV_EVENT_NOTOPER); + spin_unlock_irq(cdev->ccwlock); + /* Give up reference from ccw_device_set_online(). */ + put_device(&cdev->dev); + return -ENODEV; } /** @@ -421,6 +427,7 @@ int ccw_device_set_offline(struct ccw_device *cdev) int ccw_device_set_online(struct ccw_device *cdev) { int ret; + int ret2; if (!cdev) return -ENODEV; @@ -444,28 +451,53 @@ int ccw_device_set_online(struct ccw_device *cdev) put_device(&cdev->dev); return ret; } - if (cdev->private->state != DEV_STATE_ONLINE) { + spin_lock_irq(cdev->ccwlock); + /* Check if online processing was successful */ + if ((cdev->private->state != DEV_STATE_ONLINE) && + (cdev->private->state != DEV_STATE_W4SENSE)) { + spin_unlock_irq(cdev->ccwlock); /* Give up online reference since onlining failed. */ put_device(&cdev->dev); return -ENODEV; } - if (!cdev->drv->set_online || cdev->drv->set_online(cdev) == 0) { - cdev->online = 1; - return 0; - } + spin_unlock_irq(cdev->ccwlock); + if (cdev->drv->set_online) + ret = cdev->drv->set_online(cdev); + if (ret) + goto rollback; + cdev->online = 1; + return 0; + +rollback: spin_lock_irq(cdev->ccwlock); - ret = ccw_device_offline(cdev); + /* Wait until a final state or DISCONNECTED is reached */ + while (!dev_fsm_final_state(cdev) && + cdev->private->state != DEV_STATE_DISCONNECTED) { + spin_unlock_irq(cdev->ccwlock); + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); + spin_lock_irq(cdev->ccwlock); + } + ret2 = ccw_device_offline(cdev); + if (ret2) + goto error; spin_unlock_irq(cdev->ccwlock); - if (ret == 0) - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - else - CIO_MSG_EVENT(0, "ccw_device_offline returned %d, " - "device 0.%x.%04x\n", - ret, cdev->private->dev_id.ssid, - cdev->private->dev_id.devno); + wait_event(cdev->private->wait_q, (dev_fsm_final_state(cdev) || + cdev->private->state == DEV_STATE_DISCONNECTED)); /* Give up online reference since onlining failed. */ put_device(&cdev->dev); - return (ret == 0) ? -ENODEV : ret; + return ret; + +error: + CIO_MSG_EVENT(0, "rollback ccw_device_offline returned %d, " + "device 0.%x.%04x\n", + ret2, cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + cdev->private->state = DEV_STATE_OFFLINE; + spin_unlock_irq(cdev->ccwlock); + /* Give up online reference since onlining failed. */ + put_device(&cdev->dev); + return ret; } static int online_store_handle_offline(struct ccw_device *cdev) @@ -637,8 +669,12 @@ static int ccw_device_register(struct ccw_device *cdev) int ret; dev->bus = &ccw_bus_type; - - if ((ret = device_add(dev))) + ret = dev_set_name(&cdev->dev, "0.%x.%04x", cdev->private->dev_id.ssid, + cdev->private->dev_id.devno); + if (ret) + return ret; + ret = device_add(dev); + if (ret) return ret; set_bit(1, &cdev->private->registered); @@ -1024,9 +1060,6 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) return; sch = to_subchannel(cdev->dev.parent); css_sch_device_unregister(sch); - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); /* Release cdev reference for workqueue processing.*/ put_device(&cdev->dev); /* Release subchannel reference for local processing. */ @@ -1035,6 +1068,9 @@ static void ccw_device_call_sch_unregister(struct work_struct *work) void ccw_device_schedule_sch_unregister(struct ccw_device *cdev) { + /* Get cdev reference for workqueue processing. */ + if (!get_device(&cdev->dev)) + return; PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister); queue_work(slow_path_wq, &cdev->private->kick_work); @@ -1055,9 +1091,6 @@ io_subchannel_recog_done(struct ccw_device *cdev) /* Device did not respond in time. */ case DEV_STATE_NOT_OPER: cdev->private->flags.recog_done = 1; - /* Remove device found not operational. */ - if (!get_device(&cdev->dev)) - break; ccw_device_schedule_sch_unregister(cdev); if (atomic_dec_and_test(&ccw_device_init_count)) wake_up(&ccw_device_init_wq); @@ -1095,13 +1128,6 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch) init_waitqueue_head(&priv->wait_q); init_timer(&priv->timer); - /* Set an initial name for the device. */ - if (cio_is_console(sch->schid)) - cdev->dev.init_name = cio_get_console_cdev_name(sch); - else - dev_set_name(&cdev->dev, "0.%x.%04x", - sch->schid.ssid, sch->schib.pmcw.dev); - /* Increase counter of devices currently in recognition. */ atomic_inc(&ccw_device_init_count); @@ -1171,8 +1197,8 @@ static void io_subchannel_irq(struct subchannel *sch) cdev = sch_get_cdev(sch); - CIO_TRACE_EVENT(3, "IRQ"); - CIO_TRACE_EVENT(3, dev_name(&sch->dev)); + CIO_TRACE_EVENT(6, "IRQ"); + CIO_TRACE_EVENT(6, dev_name(&sch->dev)); if (cdev) dev_fsm_event(cdev, DEV_EVENT_INTERRUPT); } @@ -1210,9 +1236,6 @@ static void io_subchannel_do_unreg(struct work_struct *work) sch = container_of(work, struct subchannel, work); css_sch_device_unregister(sch); - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); put_device(&sch->dev); } @@ -1334,7 +1357,6 @@ io_subchannel_remove (struct subchannel *sch) cdev->private->state = DEV_STATE_NOT_OPER; spin_unlock_irqrestore(cdev->ccwlock, flags); ccw_device_unregister(cdev); - put_device(&cdev->dev); kfree(sch->private); sysfs_remove_group(&sch->dev.kobj, &io_subchannel_attr_group); return 0; @@ -1571,8 +1593,6 @@ static int purge_fn(struct device *dev, void *data) spin_unlock_irq(cdev->ccwlock); if (!unreg) goto out; - if (!get_device(&cdev->dev)) - goto out; CIO_MSG_EVENT(3, "ccw: purging 0.%x.%04x\n", priv->dev_id.ssid, priv->dev_id.devno); ccw_device_schedule_sch_unregister(cdev); @@ -1688,10 +1708,6 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow) spin_unlock_irqrestore(sch->lock, flags); css_sch_device_unregister(sch); spin_lock_irqsave(sch->lock, flags); - - /* Reset intparm to zeroes. */ - sch->config.intparm = 0; - cio_commit_config(sch); break; case REPROBE: ccw_device_trigger_reprobe(cdev); @@ -1712,7 +1728,6 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow) #ifdef CONFIG_CCW_CONSOLE static struct ccw_device console_cdev; -static char console_cdev_name[10] = "0.x.xxxx"; static struct ccw_device_private console_private; static int console_cdev_in_use; @@ -1796,13 +1811,6 @@ int ccw_device_force_console(void) return ccw_device_pm_restore(&console_cdev.dev); } EXPORT_SYMBOL_GPL(ccw_device_force_console); - -const char *cio_get_console_cdev_name(struct subchannel *sch) -{ - snprintf(console_cdev_name, 10, "0.%x.%04x", - sch->schid.ssid, sch->schib.pmcw.dev); - return (const char *)console_cdev_name; -} #endif /* @@ -2020,7 +2028,9 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev) spin_unlock_irq(sch->lock); if (ret) { CIO_MSG_EVENT(0, "Couldn't start recognition for device " - "%s (ret=%d)\n", dev_name(&cdev->dev), ret); + "0.%x.%04x (ret=%d)\n", + cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, ret); spin_lock_irq(sch->lock); cdev->private->state = DEV_STATE_DISCONNECTED; spin_unlock_irq(sch->lock); @@ -2083,8 +2093,9 @@ static int ccw_device_pm_restore(struct device *dev) } /* check if the device id has changed */ if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - CIO_MSG_EVENT(0, "resume: sch %s: failed (devno changed from " - "%04x to %04x)\n", dev_name(&sch->dev), + CIO_MSG_EVENT(0, "resume: sch 0.%x.%04x: failed (devno " + "changed from %04x to %04x)\n", + sch->schid.ssid, sch->schid.sch_no, cdev->private->dev_id.devno, sch->schib.pmcw.dev); goto out_unreg_unlock; @@ -2117,8 +2128,9 @@ static int ccw_device_pm_restore(struct device *dev) if (cm_enabled) { ret = ccw_set_cmf(cdev, 1); if (ret) { - CIO_MSG_EVENT(2, "resume: cdev %s: cmf failed " - "(rc=%d)\n", dev_name(&cdev->dev), ret); + CIO_MSG_EVENT(2, "resume: cdev 0.%x.%04x: cmf failed " + "(rc=%d)\n", cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, ret); ret = 0; } } diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 3db88c52d287..e728ce447f6e 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -394,6 +394,13 @@ ccw_device_done(struct ccw_device *cdev, int state) ccw_device_schedule_sch_unregister(cdev); cdev->private->flags.donotify = 0; } + if (state == DEV_STATE_NOT_OPER) { + CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", + cdev->private->dev_id.devno, sch->schid.sch_no); + if (!ccw_device_notify(cdev, CIO_GONE)) + ccw_device_schedule_sch_unregister(cdev); + cdev->private->flags.donotify = 0; + } if (cdev->private->flags.donotify) { cdev->private->flags.donotify = 0; @@ -731,6 +738,17 @@ static void ccw_device_generic_notoper(struct ccw_device *cdev, } /* + * Handle path verification event in offline state. + */ +static void ccw_device_offline_verify(struct ccw_device *cdev, + enum dev_event dev_event) +{ + struct subchannel *sch = to_subchannel(cdev->dev.parent); + + css_schedule_eval(sch->schid); +} + +/* * Handle path verification event. */ static void @@ -887,6 +905,8 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event) } call_handler: cdev->private->state = DEV_STATE_ONLINE; + /* In case sensing interfered with setting the device online */ + wake_up(&cdev->private->wait_q); /* Call the handler. */ if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify) /* Start delayed path verification. */ @@ -1149,7 +1169,7 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = { [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, [DEV_EVENT_INTERRUPT] = ccw_device_offline_irq, [DEV_EVENT_TIMEOUT] = ccw_device_nop, - [DEV_EVENT_VERIFY] = ccw_device_nop, + [DEV_EVENT_VERIFY] = ccw_device_offline_verify, }, [DEV_STATE_VERIFY] = { [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper, diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index b1241f8fae88..ff7748a9199d 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -1,7 +1,7 @@ /* * linux/drivers/s390/cio/qdio.h * - * Copyright 2000,2008 IBM Corp. + * Copyright 2000,2009 IBM Corp. * Author(s): Utz Bacher <utz.bacher@de.ibm.com> * Jan Glauber <jang@linux.vnet.ibm.com> */ @@ -246,6 +246,7 @@ struct qdio_q { atomic_t nr_buf_used; struct qdio_irq *irq_ptr; + struct dentry *debugfs_q; struct tasklet_struct tasklet; /* error condition during a data transfer */ @@ -267,6 +268,7 @@ struct qdio_irq { struct qib qib; u32 *dsci; /* address of device state change indicator */ struct ccw_device *cdev; + struct dentry *debugfs_dev; unsigned long int_parm; struct subchannel_id schid; diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index b8626d4df116..1b78f639ead3 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -1,14 +1,12 @@ /* * drivers/s390/cio/qdio_debug.c * - * Copyright IBM Corp. 2008 + * Copyright IBM Corp. 2008,2009 * * Author: Jan Glauber (jang@linux.vnet.ibm.com) */ -#include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/debugfs.h> -#include <asm/qdio.h> #include <asm/debug.h> #include "qdio_debug.h" #include "qdio.h" @@ -17,10 +15,7 @@ debug_info_t *qdio_dbf_setup; debug_info_t *qdio_dbf_error; static struct dentry *debugfs_root; -#define MAX_DEBUGFS_QUEUES 32 -static struct dentry *debugfs_queues[MAX_DEBUGFS_QUEUES] = { NULL }; -static DEFINE_MUTEX(debugfs_mutex); -#define QDIO_DEBUGFS_NAME_LEN 40 +#define QDIO_DEBUGFS_NAME_LEN 10 void qdio_allocate_dbf(struct qdio_initialize *init_data, struct qdio_irq *irq_ptr) @@ -130,20 +125,6 @@ static int qstat_seq_open(struct inode *inode, struct file *filp) filp->f_path.dentry->d_inode->i_private); } -static void remove_debugfs_entry(struct qdio_q *q) -{ - int i; - - for (i = 0; i < MAX_DEBUGFS_QUEUES; i++) { - if (!debugfs_queues[i]) - continue; - if (debugfs_queues[i]->d_inode->i_private == q) { - debugfs_remove(debugfs_queues[i]); - debugfs_queues[i] = NULL; - } - } -} - static struct file_operations debugfs_fops = { .owner = THIS_MODULE, .open = qstat_seq_open, @@ -155,22 +136,15 @@ static struct file_operations debugfs_fops = { static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev) { - int i = 0; char name[QDIO_DEBUGFS_NAME_LEN]; - while (debugfs_queues[i] != NULL) { - i++; - if (i >= MAX_DEBUGFS_QUEUES) - return; - } - snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%s_%d", - dev_name(&cdev->dev), + snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d", q->is_input_q ? "input" : "output", q->nr); - debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR, - debugfs_root, q, &debugfs_fops); - if (IS_ERR(debugfs_queues[i])) - debugfs_queues[i] = NULL; + q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR, + q->irq_ptr->debugfs_dev, q, &debugfs_fops); + if (IS_ERR(q->debugfs_q)) + q->debugfs_q = NULL; } void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) @@ -178,12 +152,14 @@ void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) struct qdio_q *q; int i; - mutex_lock(&debugfs_mutex); + irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev), + debugfs_root); + if (IS_ERR(irq_ptr->debugfs_dev)) + irq_ptr->debugfs_dev = NULL; for_each_input_queue(irq_ptr, q, i) setup_debugfs_entry(q, cdev); for_each_output_queue(irq_ptr, q, i) setup_debugfs_entry(q, cdev); - mutex_unlock(&debugfs_mutex); } void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) @@ -191,17 +167,16 @@ void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cd struct qdio_q *q; int i; - mutex_lock(&debugfs_mutex); for_each_input_queue(irq_ptr, q, i) - remove_debugfs_entry(q); + debugfs_remove(q->debugfs_q); for_each_output_queue(irq_ptr, q, i) - remove_debugfs_entry(q); - mutex_unlock(&debugfs_mutex); + debugfs_remove(q->debugfs_q); + debugfs_remove(irq_ptr->debugfs_dev); } int __init qdio_debug_init(void) { - debugfs_root = debugfs_create_dir("qdio_queues", NULL); + debugfs_root = debugfs_create_dir("qdio", NULL); qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16); debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 0038750ad945..9aef402a5f1b 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -798,8 +798,10 @@ static void __tiqdio_inbound_processing(struct qdio_q *q) if (!qdio_inbound_q_done(q)) { qdio_perf_stat_inc(&perf_stats.thinint_inbound_loop); - if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) + if (likely(q->irq_ptr->state != QDIO_IRQ_STATE_STOPPED)) { tasklet_schedule(&q->tasklet); + return; + } } qdio_stop_polling(q); diff --git a/drivers/s390/cio/scsw.c b/drivers/s390/cio/scsw.c deleted file mode 100644 index f8da25ab576d..000000000000 --- a/drivers/s390/cio/scsw.c +++ /dev/null @@ -1,843 +0,0 @@ -/* - * Helper functions for scsw access. - * - * Copyright IBM Corp. 2008 - * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> - */ - -#include <linux/types.h> -#include <linux/module.h> -#include <asm/cio.h> -#include "css.h" -#include "chsc.h" - -/** - * scsw_is_tm - check for transport mode scsw - * @scsw: pointer to scsw - * - * Return non-zero if the specified scsw is a transport mode scsw, zero - * otherwise. - */ -int scsw_is_tm(union scsw *scsw) -{ - return css_general_characteristics.fcx && (scsw->tm.x == 1); -} -EXPORT_SYMBOL(scsw_is_tm); - -/** - * scsw_key - return scsw key field - * @scsw: pointer to scsw - * - * Return the value of the key field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_key(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.key; - else - return scsw->cmd.key; -} -EXPORT_SYMBOL(scsw_key); - -/** - * scsw_eswf - return scsw eswf field - * @scsw: pointer to scsw - * - * Return the value of the eswf field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_eswf(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.eswf; - else - return scsw->cmd.eswf; -} -EXPORT_SYMBOL(scsw_eswf); - -/** - * scsw_cc - return scsw cc field - * @scsw: pointer to scsw - * - * Return the value of the cc field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_cc(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.cc; - else - return scsw->cmd.cc; -} -EXPORT_SYMBOL(scsw_cc); - -/** - * scsw_ectl - return scsw ectl field - * @scsw: pointer to scsw - * - * Return the value of the ectl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_ectl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.ectl; - else - return scsw->cmd.ectl; -} -EXPORT_SYMBOL(scsw_ectl); - -/** - * scsw_pno - return scsw pno field - * @scsw: pointer to scsw - * - * Return the value of the pno field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_pno(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.pno; - else - return scsw->cmd.pno; -} -EXPORT_SYMBOL(scsw_pno); - -/** - * scsw_fctl - return scsw fctl field - * @scsw: pointer to scsw - * - * Return the value of the fctl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_fctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.fctl; - else - return scsw->cmd.fctl; -} -EXPORT_SYMBOL(scsw_fctl); - -/** - * scsw_actl - return scsw actl field - * @scsw: pointer to scsw - * - * Return the value of the actl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_actl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.actl; - else - return scsw->cmd.actl; -} -EXPORT_SYMBOL(scsw_actl); - -/** - * scsw_stctl - return scsw stctl field - * @scsw: pointer to scsw - * - * Return the value of the stctl field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_stctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.stctl; - else - return scsw->cmd.stctl; -} -EXPORT_SYMBOL(scsw_stctl); - -/** - * scsw_dstat - return scsw dstat field - * @scsw: pointer to scsw - * - * Return the value of the dstat field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_dstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.dstat; - else - return scsw->cmd.dstat; -} -EXPORT_SYMBOL(scsw_dstat); - -/** - * scsw_cstat - return scsw cstat field - * @scsw: pointer to scsw - * - * Return the value of the cstat field of the specified scsw, regardless of - * whether it is a transport mode or command mode scsw. - */ -u32 scsw_cstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw->tm.cstat; - else - return scsw->cmd.cstat; -} -EXPORT_SYMBOL(scsw_cstat); - -/** - * scsw_cmd_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_key(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_key); - -/** - * scsw_cmd_is_valid_sctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_sctl(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_sctl); - -/** - * scsw_cmd_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_eswf(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_eswf); - -/** - * scsw_cmd_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_cc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && - (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_cc); - -/** - * scsw_cmd_is_valid_fmt - check fmt field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fmt field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_fmt(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_fmt); - -/** - * scsw_cmd_is_valid_pfch - check pfch field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pfch field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_pfch(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_pfch); - -/** - * scsw_cmd_is_valid_isic - check isic field validity - * @scsw: pointer to scsw - * - * Return non-zero if the isic field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_isic(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_isic); - -/** - * scsw_cmd_is_valid_alcc - check alcc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the alcc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_alcc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_alcc); - -/** - * scsw_cmd_is_valid_ssi - check ssi field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ssi field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_ssi(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_ssi); - -/** - * scsw_cmd_is_valid_zcc - check zcc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the zcc field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_zcc(union scsw *scsw) -{ - return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && - (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_zcc); - -/** - * scsw_cmd_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_ectl(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_ectl); - -/** - * scsw_cmd_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_pno(union scsw *scsw) -{ - return (scsw->cmd.fctl != 0) && - (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) || - ((scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->cmd.actl & SCSW_ACTL_SUSPENDED))); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_pno); - -/** - * scsw_cmd_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_fctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_fctl); - -/** - * scsw_cmd_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_actl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_actl); - -/** - * scsw_cmd_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_stctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_cmd_is_valid_stctl); - -/** - * scsw_cmd_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_dstat(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->cmd.cc != 3); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_dstat); - -/** - * scsw_cmd_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified command mode scsw is - * valid, zero otherwise. - */ -int scsw_cmd_is_valid_cstat(union scsw *scsw) -{ - return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->cmd.cc != 3); -} -EXPORT_SYMBOL(scsw_cmd_is_valid_cstat); - -/** - * scsw_tm_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_key(union scsw *scsw) -{ - return (scsw->tm.fctl & SCSW_FCTL_START_FUNC); -} -EXPORT_SYMBOL(scsw_tm_is_valid_key); - -/** - * scsw_tm_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_eswf(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_tm_is_valid_eswf); - -/** - * scsw_tm_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_cc(union scsw *scsw) -{ - return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) && - (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); -} -EXPORT_SYMBOL(scsw_tm_is_valid_cc); - -/** - * scsw_tm_is_valid_fmt - check fmt field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fmt field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fmt(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fmt); - -/** - * scsw_tm_is_valid_x - check x field validity - * @scsw: pointer to scsw - * - * Return non-zero if the x field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_x(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_x); - -/** - * scsw_tm_is_valid_q - check q field validity - * @scsw: pointer to scsw - * - * Return non-zero if the q field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_q(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_q); - -/** - * scsw_tm_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_ectl(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS); -} -EXPORT_SYMBOL(scsw_tm_is_valid_ectl); - -/** - * scsw_tm_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_pno(union scsw *scsw) -{ - return (scsw->tm.fctl != 0) && - (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) || - ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && - (scsw->tm.actl & SCSW_ACTL_SUSPENDED))); -} -EXPORT_SYMBOL(scsw_tm_is_valid_pno); - -/** - * scsw_tm_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fctl); - -/** - * scsw_tm_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_actl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_actl); - -/** - * scsw_tm_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_stctl(union scsw *scsw) -{ - /* Only valid if pmcw.dnv == 1*/ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_stctl); - -/** - * scsw_tm_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_dstat(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->tm.cc != 3); -} -EXPORT_SYMBOL(scsw_tm_is_valid_dstat); - -/** - * scsw_tm_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_cstat(union scsw *scsw) -{ - return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && - (scsw->tm.cc != 3); -} -EXPORT_SYMBOL(scsw_tm_is_valid_cstat); - -/** - * scsw_tm_is_valid_fcxs - check fcxs field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fcxs field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_fcxs(union scsw *scsw) -{ - return 1; -} -EXPORT_SYMBOL(scsw_tm_is_valid_fcxs); - -/** - * scsw_tm_is_valid_schxs - check schxs field validity - * @scsw: pointer to scsw - * - * Return non-zero if the schxs field of the specified transport mode scsw is - * valid, zero otherwise. - */ -int scsw_tm_is_valid_schxs(union scsw *scsw) -{ - return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK | - SCHN_STAT_INTF_CTRL_CHK | - SCHN_STAT_PROT_CHECK | - SCHN_STAT_CHN_DATA_CHK)); -} -EXPORT_SYMBOL(scsw_tm_is_valid_schxs); - -/** - * scsw_is_valid_actl - check actl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the actl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_actl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_actl(scsw); - else - return scsw_cmd_is_valid_actl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_actl); - -/** - * scsw_is_valid_cc - check cc field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cc field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_cc(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_cc(scsw); - else - return scsw_cmd_is_valid_cc(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_cc); - -/** - * scsw_is_valid_cstat - check cstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the cstat field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_cstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_cstat(scsw); - else - return scsw_cmd_is_valid_cstat(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_cstat); - -/** - * scsw_is_valid_dstat - check dstat field validity - * @scsw: pointer to scsw - * - * Return non-zero if the dstat field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_dstat(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_dstat(scsw); - else - return scsw_cmd_is_valid_dstat(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_dstat); - -/** - * scsw_is_valid_ectl - check ectl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the ectl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_ectl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_ectl(scsw); - else - return scsw_cmd_is_valid_ectl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_ectl); - -/** - * scsw_is_valid_eswf - check eswf field validity - * @scsw: pointer to scsw - * - * Return non-zero if the eswf field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_eswf(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_eswf(scsw); - else - return scsw_cmd_is_valid_eswf(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_eswf); - -/** - * scsw_is_valid_fctl - check fctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the fctl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_fctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_fctl(scsw); - else - return scsw_cmd_is_valid_fctl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_fctl); - -/** - * scsw_is_valid_key - check key field validity - * @scsw: pointer to scsw - * - * Return non-zero if the key field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_key(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_key(scsw); - else - return scsw_cmd_is_valid_key(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_key); - -/** - * scsw_is_valid_pno - check pno field validity - * @scsw: pointer to scsw - * - * Return non-zero if the pno field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_pno(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_pno(scsw); - else - return scsw_cmd_is_valid_pno(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_pno); - -/** - * scsw_is_valid_stctl - check stctl field validity - * @scsw: pointer to scsw - * - * Return non-zero if the stctl field of the specified scsw is valid, - * regardless of whether it is a transport mode or command mode scsw. - * Return zero if the field does not contain a valid value. - */ -int scsw_is_valid_stctl(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_valid_stctl(scsw); - else - return scsw_cmd_is_valid_stctl(scsw); -} -EXPORT_SYMBOL(scsw_is_valid_stctl); - -/** - * scsw_cmd_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the command mode scsw indicates that the associated - * status condition is solicited, zero if it is unsolicited. - */ -int scsw_cmd_is_solicited(union scsw *scsw) -{ - return (scsw->cmd.cc != 0) || (scsw->cmd.stctl != - (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); -} -EXPORT_SYMBOL(scsw_cmd_is_solicited); - -/** - * scsw_tm_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the transport mode scsw indicates that the associated - * status condition is solicited, zero if it is unsolicited. - */ -int scsw_tm_is_solicited(union scsw *scsw) -{ - return (scsw->tm.cc != 0) || (scsw->tm.stctl != - (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); -} -EXPORT_SYMBOL(scsw_tm_is_solicited); - -/** - * scsw_is_solicited - check for solicited scsw - * @scsw: pointer to scsw - * - * Return non-zero if the transport or command mode scsw indicates that the - * associated status condition is solicited, zero if it is unsolicited. - */ -int scsw_is_solicited(union scsw *scsw) -{ - if (scsw_is_tm(scsw)) - return scsw_tm_is_solicited(scsw); - else - return scsw_cmd_is_solicited(scsw); -} -EXPORT_SYMBOL(scsw_is_solicited); |