diff options
Diffstat (limited to 'drivers/s390/char')
29 files changed, 1469 insertions, 1185 deletions
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig index 2c9a776bd63..71bf959732f 100644 --- a/drivers/s390/char/Kconfig +++ b/drivers/s390/char/Kconfig @@ -11,7 +11,7 @@ config TN3270 config TN3270_TTY def_tristate y prompt "Support for tty input/output on 3270 terminals" - depends on TN3270 + depends on TN3270 && TTY help Include support for using an IBM 3270 terminal as a Linux tty. @@ -33,7 +33,7 @@ config TN3270_CONSOLE config TN3215 def_bool y prompt "Support for 3215 line mode terminal" - depends on CCW + depends on CCW && TTY help Include support for IBM 3215 line-mode terminals. @@ -51,7 +51,7 @@ config CCW_CONSOLE config SCLP_TTY def_bool y prompt "Support for SCLP line mode terminal" - depends on S390 + depends on S390 && TTY help Include support for IBM SCLP line-mode terminals. @@ -66,7 +66,7 @@ config SCLP_CONSOLE config SCLP_VT220_TTY def_bool y prompt "Support for SCLP VT220-compatible terminal" - depends on S390 + depends on S390 && TTY help Include support for an IBM SCLP VT220-compatible terminal. diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile index f3c32520744..78b6ace7edc 100644 --- a/drivers/s390/char/Makefile +++ b/drivers/s390/char/Makefile @@ -3,7 +3,8 @@ # obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \ - sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o + sclp_cmd.o sclp_config.o sclp_cpi_sys.o sclp_ocf.o sclp_ctl.o \ + sclp_early.o obj-$(CONFIG_TN3270) += raw3270.o obj-$(CONFIG_TN3270_CONSOLE) += con3270.o @@ -18,7 +19,6 @@ obj-$(CONFIG_SCLP_VT220_TTY) += sclp_vt220.o obj-$(CONFIG_SCLP_CPI) += sclp_cpi.o obj-$(CONFIG_SCLP_ASYNC) += sclp_async.o -obj-$(CONFIG_ZVM_WATCHDOG) += vmwatchdog.o obj-$(CONFIG_VMLOGRDR) += vmlogrdr.o obj-$(CONFIG_VMCP) += vmcp.o @@ -32,4 +32,4 @@ obj-$(CONFIG_MONWRITER) += monwriter.o obj-$(CONFIG_S390_VMUR) += vmur.o zcore_mod-objs := sclp_sdias.o zcore.o -obj-$(CONFIG_ZFCPDUMP) += zcore_mod.o +obj-$(CONFIG_CRASH_DUMP) += zcore_mod.o diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index 33b7141a182..5af7f0bd612 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -412,8 +412,9 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm, break; case CTRLCHAR_CTRL: - tty_insert_flip_char(tty, cchar, TTY_NORMAL); - tty_flip_buffer_push(tty); + tty_insert_flip_char(&raw->port, cchar, + TTY_NORMAL); + tty_flip_buffer_push(&raw->port); break; case CTRLCHAR_NONE: @@ -425,8 +426,9 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm, count++; } else count -= 2; - tty_insert_flip_string(tty, raw->inbuf, count); - tty_flip_buffer_push(tty); + tty_insert_flip_string(&raw->port, raw->inbuf, + count); + tty_flip_buffer_push(&raw->port); break; } } else if (req->type == RAW3215_WRITE) { @@ -500,7 +502,7 @@ static void raw3215_make_room(struct raw3215_info *raw, unsigned int length) raw3215_try_io(raw); raw->flags &= ~RAW3215_FLUSHING; #ifdef CONFIG_TN3215_CONSOLE - wait_cons_dev(); + ccw_device_wait_idle(raw->cdev); #endif /* Enough room freed up ? */ if (RAW3215_BUFFER_SIZE - raw->count >= length) @@ -856,7 +858,7 @@ static void con3215_flush(void) raw = raw3215[0]; /* console 3215 is the first one */ if (raw->port.flags & ASYNC_SUSPENDED) /* The console is still frozen for suspend. */ - if (ccw_device_force_console()) + if (ccw_device_force_console(raw->cdev)) /* Forcing didn't work, no panic message .. */ return; spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags); @@ -920,7 +922,7 @@ static int __init con3215_init(void) raw3215_freelist = req; } - cdev = ccw_device_probe_console(); + cdev = ccw_device_create_console(&raw3215_ccw_driver); if (IS_ERR(cdev)) return -ENODEV; @@ -930,6 +932,12 @@ static int __init con3215_init(void) cdev->handler = raw3215_irq; raw->flags |= RAW3215_FIXED; + if (ccw_device_enable_console(cdev)) { + ccw_device_destroy_console(cdev); + raw3215_free_info(raw); + raw3215[0] = NULL; + return -ENODEV; + } /* Request the console irq */ if (raw3215_startup(raw) != 0) { @@ -970,7 +978,7 @@ static int tty3215_open(struct tty_struct *tty, struct file * filp) tty_port_tty_set(&raw->port, tty); - tty->low_latency = 0; /* don't use bottom half for pushing chars */ + raw->port.low_latency = 0; /* don't use bottom half for pushing chars */ /* * Start up 3215 device */ diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 699fd3e363d..75ffe9980c3 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -7,6 +7,7 @@ * Copyright IBM Corp. 2003, 2009 */ +#include <linux/module.h> #include <linux/console.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -30,6 +31,9 @@ static struct raw3270_fn con3270_fn; +static bool auto_update = 1; +module_param(auto_update, bool, 0); + /* * Main 3270 console view data structure. */ @@ -204,6 +208,8 @@ con3270_update(struct con3270 *cp) struct string *s, *n; int rc; + if (!auto_update && !raw3270_view_active(&cp->view)) + return; if (cp->view.dev) raw3270_activate_view(&cp->view); @@ -529,6 +535,7 @@ con3270_flush(void) if (!cp->view.dev) return; raw3270_pm_unfreeze(&cp->view); + raw3270_activate_view(&cp->view); spin_lock_irqsave(&cp->view.lock, flags); con3270_wait_write(cp); cp->nr_up = 0; @@ -576,7 +583,6 @@ static struct console con3270 = { static int __init con3270_init(void) { - struct ccw_device *cdev; struct raw3270 *rp; void *cbuf; int i; @@ -591,10 +597,7 @@ con3270_init(void) cpcmd("TERM AUTOCR OFF", NULL, 0, NULL); } - cdev = ccw_device_probe_console(); - if (IS_ERR(cdev)) - return -ENODEV; - rp = raw3270_setup_console(cdev); + rp = raw3270_setup_console(); if (IS_ERR(rp)) return PTR_ERR(rp); diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c index 911704571b9..71e97473801 100644 --- a/drivers/s390/char/fs3270.c +++ b/drivers/s390/char/fs3270.c @@ -433,9 +433,9 @@ fs3270_open(struct inode *inode, struct file *filp) struct idal_buffer *ib; int minor, rc = 0; - if (imajor(filp->f_path.dentry->d_inode) != IBM_FS3270_MAJOR) + if (imajor(file_inode(filp)) != IBM_FS3270_MAJOR) return -ENODEV; - minor = iminor(filp->f_path.dentry->d_inode); + minor = iminor(file_inode(filp)); /* Check for minor 0 multiplexer. */ if (minor == 0) { struct tty_struct *tty = get_current_tty(); @@ -443,7 +443,7 @@ fs3270_open(struct inode *inode, struct file *filp) tty_kref_put(tty); return -ENODEV; } - minor = tty->index + RAW3270_FIRSTMINOR; + minor = tty->index; tty_kref_put(tty); } mutex_lock(&fs3270_mutex); @@ -524,6 +524,25 @@ static const struct file_operations fs3270_fops = { .llseek = no_llseek, }; +static void fs3270_create_cb(int minor) +{ + __register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops); + device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor), + NULL, "3270/tub%d", minor); +} + +static void fs3270_destroy_cb(int minor) +{ + device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor)); + __unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub"); +} + +static struct raw3270_notifier fs3270_notifier = +{ + .create = fs3270_create_cb, + .destroy = fs3270_destroy_cb, +}; + /* * 3270 fullscreen driver initialization. */ @@ -532,16 +551,21 @@ fs3270_init(void) { int rc; - rc = register_chrdev(IBM_FS3270_MAJOR, "fs3270", &fs3270_fops); + rc = __register_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270", &fs3270_fops); if (rc) return rc; + device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, 0), + NULL, "3270/tub"); + raw3270_register_notifier(&fs3270_notifier); return 0; } static void __exit fs3270_exit(void) { - unregister_chrdev(IBM_FS3270_MAJOR, "fs3270"); + raw3270_unregister_notifier(&fs3270_notifier); + device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, 0)); + __unregister_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270"); } MODULE_LICENSE("GPL"); diff --git a/drivers/s390/char/keyboard.h b/drivers/s390/char/keyboard.h index d0ae2be5819..a31f339211d 100644 --- a/drivers/s390/char/keyboard.h +++ b/drivers/s390/char/keyboard.h @@ -43,22 +43,14 @@ int kbd_ioctl(struct kbd_data *, unsigned int, unsigned long); static inline void kbd_put_queue(struct tty_port *port, int ch) { - struct tty_struct *tty = tty_port_tty_get(port); - if (!tty) - return; - tty_insert_flip_char(tty, ch, 0); - tty_schedule_flip(tty); - tty_kref_put(tty); + tty_insert_flip_char(port, ch, 0); + tty_schedule_flip(port); } static inline void kbd_puts_queue(struct tty_port *port, char *cp) { - struct tty_struct *tty = tty_port_tty_get(port); - if (!tty) - return; while (*cp) - tty_insert_flip_char(tty, *cp++, 0); - tty_schedule_flip(tty); - tty_kref_put(tty); + tty_insert_flip_char(port, *cp++, 0); + tty_schedule_flip(port); } diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index f4ff515db25..0da3ae3cd63 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -174,8 +174,7 @@ static void mon_free_mem(struct mon_private *monpriv) int i; for (i = 0; i < MON_MSGLIM; i++) - if (monpriv->msg_array[i]) - kfree(monpriv->msg_array[i]); + kfree(monpriv->msg_array[i]); kfree(monpriv); } diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c index 4600aa10a1c..668b32b0dc1 100644 --- a/drivers/s390/char/monwriter.c +++ b/drivers/s390/char/monwriter.c @@ -60,7 +60,7 @@ static int monwrite_diag(struct monwrite_hdr *myhdr, char *buffer, int fcn) struct appldata_product_id id; int rc; - strcpy(id.prod_nr, "LNXAPPL"); + strncpy(id.prod_nr, "LNXAPPL", 7); id.prod_fn = myhdr->applid; id.record_nr = myhdr->record_num; id.version_nr = myhdr->version; diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 9a6c140c5f0..220acb4cbee 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -28,7 +28,7 @@ #include <linux/device.h> #include <linux/mutex.h> -static struct class *class3270; +struct class *class3270; /* The main 3270 data structure. */ struct raw3270 { @@ -37,6 +37,7 @@ struct raw3270 { int minor; short model, rows, cols; + unsigned int state; unsigned long flags; struct list_head req_queue; /* Request queue. */ @@ -46,20 +47,26 @@ struct raw3270 { struct timer_list timer; /* Device timer. */ unsigned char *ascebc; /* ascii -> ebcdic table */ - struct device *clttydev; /* 3270-class tty device ptr */ - struct device *cltubdev; /* 3270-class tub device ptr */ - struct raw3270_request init_request; + struct raw3270_view init_view; + struct raw3270_request init_reset; + struct raw3270_request init_readpart; + struct raw3270_request init_readmod; unsigned char init_data[256]; }; +/* raw3270->state */ +#define RAW3270_STATE_INIT 0 /* Initial state */ +#define RAW3270_STATE_RESET 1 /* Reset command is pending */ +#define RAW3270_STATE_W4ATTN 2 /* Wait for attention interrupt */ +#define RAW3270_STATE_READMOD 3 /* Read partition is pending */ +#define RAW3270_STATE_READY 4 /* Device is usable by views */ + /* raw3270->flags */ #define RAW3270_FLAGS_14BITADDR 0 /* 14-bit buffer addresses */ #define RAW3270_FLAGS_BUSY 1 /* Device busy, leave it alone */ -#define RAW3270_FLAGS_ATTN 2 /* Device sent an ATTN interrupt */ -#define RAW3270_FLAGS_READY 4 /* Device is useable by views */ -#define RAW3270_FLAGS_CONSOLE 8 /* Device is the console. */ -#define RAW3270_FLAGS_FROZEN 16 /* set if 3270 is frozen for suspend */ +#define RAW3270_FLAGS_CONSOLE 2 /* Device is the console. */ +#define RAW3270_FLAGS_FROZEN 3 /* set if 3270 is frozen for suspend */ /* Semaphore to protect global data of raw3270 (devices, views, etc). */ static DEFINE_MUTEX(raw3270_mutex); @@ -97,6 +104,17 @@ static unsigned char raw3270_ebcgraf[64] = { 0xf8, 0xf9, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f }; +static inline int raw3270_state_ready(struct raw3270 *rp) +{ + return rp->state == RAW3270_STATE_READY; +} + +static inline int raw3270_state_final(struct raw3270 *rp) +{ + return rp->state == RAW3270_STATE_INIT || + rp->state == RAW3270_STATE_READY; +} + void raw3270_buffer_address(struct raw3270 *rp, char *cp, unsigned short addr) { @@ -214,7 +232,7 @@ raw3270_request_set_idal(struct raw3270_request *rq, struct idal_buffer *ib) * Stop running ccw. */ static int -raw3270_halt_io_nolock(struct raw3270 *rp, struct raw3270_request *rq) +__raw3270_halt_io(struct raw3270 *rp, struct raw3270_request *rq) { int retries; int rc; @@ -233,18 +251,6 @@ raw3270_halt_io_nolock(struct raw3270 *rp, struct raw3270_request *rq) return rc; } -static int -raw3270_halt_io(struct raw3270 *rp, struct raw3270_request *rq) -{ - unsigned long flags; - int rc; - - spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - rc = raw3270_halt_io_nolock(rp, rq); - spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); - return rc; -} - /* * Add the request to the request queue, try to start it if the * 3270 device is idle. Return without waiting for end of i/o. @@ -270,6 +276,15 @@ __raw3270_start(struct raw3270 *rp, struct raw3270_view *view, } int +raw3270_view_active(struct raw3270_view *view) +{ + struct raw3270 *rp = view->dev; + + return rp && rp->view == view && + !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags); +} + +int raw3270_start(struct raw3270_view *view, struct raw3270_request *rq) { unsigned long flags; @@ -281,8 +296,8 @@ raw3270_start(struct raw3270_view *view, struct raw3270_request *rq) if (!rp || rp->view != view || test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) rc = -EACCES; - else if (!test_bit(RAW3270_FLAGS_READY, &rp->flags)) - rc = -ENODEV; + else if (!raw3270_state_ready(rp)) + rc = -EBUSY; else rc = __raw3270_start(rp, view, rq); spin_unlock_irqrestore(get_ccwdev_lock(view->dev->cdev), flags); @@ -299,8 +314,8 @@ raw3270_start_locked(struct raw3270_view *view, struct raw3270_request *rq) if (!rp || rp->view != view || test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) rc = -EACCES; - else if (!test_bit(RAW3270_FLAGS_READY, &rp->flags)) - rc = -ENODEV; + else if (!raw3270_state_ready(rp)) + rc = -EBUSY; else rc = __raw3270_start(rp, view, rq); return rc; @@ -378,7 +393,7 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) case RAW3270_IO_STOP: if (!rq) break; - raw3270_halt_io_nolock(rp, rq); + __raw3270_halt_io(rp, rq); rq->rc = -EIO; break; default: @@ -413,9 +428,14 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) } /* - * Size sensing. + * To determine the size of the 3270 device we need to do: + * 1) send a 'read partition' data stream to the device + * 2) wait for the attn interrupt that precedes the query reply + * 3) do a read modified to get the query reply + * To make things worse we have to cope with intervention + * required (3270 device switched to 'stand-by') and command + * rejects (old devices that can't do 'read partition'). */ - struct raw3270_ua { /* Query Reply structure for Usable Area */ struct { /* Usable Area Query Reply Base */ short l; /* Length of this structured field */ @@ -451,117 +471,21 @@ struct raw3270_ua { /* Query Reply structure for Usable Area */ } __attribute__ ((packed)) aua; } __attribute__ ((packed)); -static struct diag210 raw3270_init_diag210; -static DEFINE_MUTEX(raw3270_init_mutex); - -static int -raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq, - struct irb *irb) -{ - /* - * Unit-Check Processing: - * Expect Command Reject or Intervention Required. - */ - if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { - /* Request finished abnormally. */ - if (irb->ecw[0] & SNS0_INTERVENTION_REQ) { - set_bit(RAW3270_FLAGS_BUSY, &view->dev->flags); - return RAW3270_IO_BUSY; - } - } - if (rq) { - if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { - if (irb->ecw[0] & SNS0_CMD_REJECT) - rq->rc = -EOPNOTSUPP; - else - rq->rc = -EIO; - } else - /* Request finished normally. Copy residual count. */ - rq->rescnt = irb->scsw.cmd.count; - } - if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { - set_bit(RAW3270_FLAGS_ATTN, &view->dev->flags); - wake_up(&raw3270_wait_queue); - } - return RAW3270_IO_DONE; -} - -static struct raw3270_fn raw3270_init_fn = { - .intv = raw3270_init_irq -}; - -static struct raw3270_view raw3270_init_view = { - .fn = &raw3270_init_fn -}; - -/* - * raw3270_wait/raw3270_wait_interruptible/__raw3270_wakeup - * Wait for end of request. The request must have been started - * with raw3270_start, rc = 0. The device lock may NOT have been - * released between calling raw3270_start and raw3270_wait. - */ static void -raw3270_wake_init(struct raw3270_request *rq, void *data) -{ - wake_up((wait_queue_head_t *) data); -} - -/* - * Special wait function that can cope with console initialization. - */ -static int -raw3270_start_init(struct raw3270 *rp, struct raw3270_view *view, - struct raw3270_request *rq) -{ - unsigned long flags; - int rc; - -#ifdef CONFIG_TN3270_CONSOLE - if (raw3270_registered == 0) { - spin_lock_irqsave(get_ccwdev_lock(view->dev->cdev), flags); - rq->callback = NULL; - rc = __raw3270_start(rp, view, rq); - if (rc == 0) - while (!raw3270_request_final(rq)) { - wait_cons_dev(); - barrier(); - } - spin_unlock_irqrestore(get_ccwdev_lock(view->dev->cdev), flags); - return rq->rc; - } -#endif - rq->callback = raw3270_wake_init; - rq->callback_data = &raw3270_wait_queue; - spin_lock_irqsave(get_ccwdev_lock(view->dev->cdev), flags); - rc = __raw3270_start(rp, view, rq); - spin_unlock_irqrestore(get_ccwdev_lock(view->dev->cdev), flags); - if (rc) - return rc; - /* Now wait for the completion. */ - rc = wait_event_interruptible(raw3270_wait_queue, - raw3270_request_final(rq)); - if (rc == -ERESTARTSYS) { /* Interrupted by a signal. */ - raw3270_halt_io(view->dev, rq); - /* No wait for the halt to complete. */ - wait_event(raw3270_wait_queue, raw3270_request_final(rq)); - return -ERESTARTSYS; - } - return rq->rc; -} - -static int -__raw3270_size_device_vm(struct raw3270 *rp) +raw3270_size_device_vm(struct raw3270 *rp) { int rc, model; struct ccw_dev_id dev_id; + struct diag210 diag_data; ccw_device_get_id(rp->cdev, &dev_id); - raw3270_init_diag210.vrdcdvno = dev_id.devno; - raw3270_init_diag210.vrdclen = sizeof(struct diag210); - rc = diag210(&raw3270_init_diag210); - if (rc) - return rc; - model = raw3270_init_diag210.vrdccrmd; + diag_data.vrdcdvno = dev_id.devno; + diag_data.vrdclen = sizeof(struct diag210); + rc = diag210(&diag_data); + model = diag_data.vrdccrmd; + /* Use default model 2 if the size could not be detected */ + if (rc || model < 2 || model > 5) + model = 2; switch (model) { case 2: rp->model = model; @@ -583,77 +507,25 @@ __raw3270_size_device_vm(struct raw3270 *rp) rp->rows = 27; rp->cols = 132; break; - default: - rc = -EOPNOTSUPP; - break; } - return rc; } -static int -__raw3270_size_device(struct raw3270 *rp) +static void +raw3270_size_device(struct raw3270 *rp) { - static const unsigned char wbuf[] = - { 0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81 }; struct raw3270_ua *uap; - int rc; - - /* - * To determine the size of the 3270 device we need to do: - * 1) send a 'read partition' data stream to the device - * 2) wait for the attn interrupt that precedes the query reply - * 3) do a read modified to get the query reply - * To make things worse we have to cope with intervention - * required (3270 device switched to 'stand-by') and command - * rejects (old devices that can't do 'read partition'). - */ - memset(&rp->init_request, 0, sizeof(rp->init_request)); - memset(&rp->init_data, 0, 256); - /* Store 'read partition' data stream to init_data */ - memcpy(&rp->init_data, wbuf, sizeof(wbuf)); - INIT_LIST_HEAD(&rp->init_request.list); - rp->init_request.ccw.cmd_code = TC_WRITESF; - rp->init_request.ccw.flags = CCW_FLAG_SLI; - rp->init_request.ccw.count = sizeof(wbuf); - rp->init_request.ccw.cda = (__u32) __pa(&rp->init_data); - - rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request); - if (rc) - /* Check error cases: -ERESTARTSYS, -EIO and -EOPNOTSUPP */ - return rc; - /* Wait for attention interrupt. */ -#ifdef CONFIG_TN3270_CONSOLE - if (raw3270_registered == 0) { - unsigned long flags; - - spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - while (!test_and_clear_bit(RAW3270_FLAGS_ATTN, &rp->flags)) - wait_cons_dev(); - spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); - } else -#endif - rc = wait_event_interruptible(raw3270_wait_queue, - test_and_clear_bit(RAW3270_FLAGS_ATTN, &rp->flags)); - if (rc) - return rc; - - /* - * The device accepted the 'read partition' command. Now - * set up a read ccw and issue it. - */ - rp->init_request.ccw.cmd_code = TC_READMOD; - rp->init_request.ccw.flags = CCW_FLAG_SLI; - rp->init_request.ccw.count = sizeof(rp->init_data); - rp->init_request.ccw.cda = (__u32) __pa(rp->init_data); - rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request); - if (rc) - return rc; /* Got a Query Reply */ uap = (struct raw3270_ua *) (rp->init_data + 1); /* Paranoia check. */ - if (rp->init_data[0] != 0x88 || uap->uab.qcode != 0x81) - return -EOPNOTSUPP; + if (rp->init_readmod.rc || rp->init_data[0] != 0x88 || + uap->uab.qcode != 0x81) { + /* Couldn't detect size. Use default model 2. */ + rp->model = 2; + rp->rows = 24; + rp->cols = 80; + return; + } /* Copy rows/columns of default Usable Area */ rp->rows = uap->uab.h; rp->cols = uap->uab.w; @@ -666,66 +538,133 @@ __raw3270_size_device(struct raw3270 *rp) rp->rows = uap->aua.hauai; rp->cols = uap->aua.wauai; } - return 0; + /* Try to find a model. */ + rp->model = 0; + if (rp->rows == 24 && rp->cols == 80) + rp->model = 2; + if (rp->rows == 32 && rp->cols == 80) + rp->model = 3; + if (rp->rows == 43 && rp->cols == 80) + rp->model = 4; + if (rp->rows == 27 && rp->cols == 132) + rp->model = 5; } -static int -raw3270_size_device(struct raw3270 *rp) +static void +raw3270_size_device_done(struct raw3270 *rp) { - int rc; + struct raw3270_view *view; - mutex_lock(&raw3270_init_mutex); - rp->view = &raw3270_init_view; - raw3270_init_view.dev = rp; - if (MACHINE_IS_VM) - rc = __raw3270_size_device_vm(rp); - else - rc = __raw3270_size_device(rp); - raw3270_init_view.dev = NULL; rp->view = NULL; - mutex_unlock(&raw3270_init_mutex); - if (rc == 0) { /* Found something. */ - /* Try to find a model. */ - rp->model = 0; - if (rp->rows == 24 && rp->cols == 80) - rp->model = 2; - if (rp->rows == 32 && rp->cols == 80) - rp->model = 3; - if (rp->rows == 43 && rp->cols == 80) - rp->model = 4; - if (rp->rows == 27 && rp->cols == 132) - rp->model = 5; - } else { - /* Couldn't detect size. Use default model 2. */ - rp->model = 2; - rp->rows = 24; - rp->cols = 80; - return 0; + rp->state = RAW3270_STATE_READY; + /* Notify views about new size */ + list_for_each_entry(view, &rp->view_list, list) + if (view->fn->resize) + view->fn->resize(view, rp->model, rp->rows, rp->cols); + /* Setup processing done, now activate a view */ + list_for_each_entry(view, &rp->view_list, list) { + rp->view = view; + if (view->fn->activate(view) == 0) + break; + rp->view = NULL; } +} + +static void +raw3270_read_modified_cb(struct raw3270_request *rq, void *data) +{ + struct raw3270 *rp = rq->view->dev; + + raw3270_size_device(rp); + raw3270_size_device_done(rp); +} + +static void +raw3270_read_modified(struct raw3270 *rp) +{ + if (rp->state != RAW3270_STATE_W4ATTN) + return; + /* Use 'read modified' to get the result of a read partition. */ + memset(&rp->init_readmod, 0, sizeof(rp->init_readmod)); + memset(&rp->init_data, 0, sizeof(rp->init_data)); + rp->init_readmod.ccw.cmd_code = TC_READMOD; + rp->init_readmod.ccw.flags = CCW_FLAG_SLI; + rp->init_readmod.ccw.count = sizeof(rp->init_data); + rp->init_readmod.ccw.cda = (__u32) __pa(rp->init_data); + rp->init_readmod.callback = raw3270_read_modified_cb; + rp->state = RAW3270_STATE_READMOD; + raw3270_start_irq(&rp->init_view, &rp->init_readmod); +} + +static void +raw3270_writesf_readpart(struct raw3270 *rp) +{ + static const unsigned char wbuf[] = + { 0x00, 0x07, 0x01, 0xff, 0x03, 0x00, 0x81 }; + + /* Store 'read partition' data stream to init_data */ + memset(&rp->init_readpart, 0, sizeof(rp->init_readpart)); + memset(&rp->init_data, 0, sizeof(rp->init_data)); + memcpy(&rp->init_data, wbuf, sizeof(wbuf)); + rp->init_readpart.ccw.cmd_code = TC_WRITESF; + rp->init_readpart.ccw.flags = CCW_FLAG_SLI; + rp->init_readpart.ccw.count = sizeof(wbuf); + rp->init_readpart.ccw.cda = (__u32) __pa(&rp->init_data); + rp->state = RAW3270_STATE_W4ATTN; + raw3270_start_irq(&rp->init_view, &rp->init_readpart); +} + +/* + * Device reset + */ +static void +raw3270_reset_device_cb(struct raw3270_request *rq, void *data) +{ + struct raw3270 *rp = rq->view->dev; + + if (rp->state != RAW3270_STATE_RESET) + return; + if (rq->rc) { + /* Reset command failed. */ + rp->state = RAW3270_STATE_INIT; + } else if (MACHINE_IS_VM) { + raw3270_size_device_vm(rp); + raw3270_size_device_done(rp); + } else + raw3270_writesf_readpart(rp); + memset(&rp->init_reset, 0, sizeof(rp->init_reset)); +} + +static int +__raw3270_reset_device(struct raw3270 *rp) +{ + int rc; + + /* Check if reset is already pending */ + if (rp->init_reset.view) + return -EBUSY; + /* Store reset data stream to init_data/init_reset */ + rp->init_data[0] = TW_KR; + rp->init_reset.ccw.cmd_code = TC_EWRITEA; + rp->init_reset.ccw.flags = CCW_FLAG_SLI; + rp->init_reset.ccw.count = 1; + rp->init_reset.ccw.cda = (__u32) __pa(rp->init_data); + rp->init_reset.callback = raw3270_reset_device_cb; + rc = __raw3270_start(rp, &rp->init_view, &rp->init_reset); + if (rc == 0 && rp->state == RAW3270_STATE_INIT) + rp->state = RAW3270_STATE_RESET; return rc; } static int raw3270_reset_device(struct raw3270 *rp) { + unsigned long flags; int rc; - mutex_lock(&raw3270_init_mutex); - memset(&rp->init_request, 0, sizeof(rp->init_request)); - memset(&rp->init_data, 0, sizeof(rp->init_data)); - /* Store reset data stream to init_data/init_request */ - rp->init_data[0] = TW_KR; - INIT_LIST_HEAD(&rp->init_request.list); - rp->init_request.ccw.cmd_code = TC_EWRITEA; - rp->init_request.ccw.flags = CCW_FLAG_SLI; - rp->init_request.ccw.count = 1; - rp->init_request.ccw.cda = (__u32) __pa(rp->init_data); - rp->view = &raw3270_init_view; - raw3270_init_view.dev = rp; - rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request); - raw3270_init_view.dev = NULL; - rp->view = NULL; - mutex_unlock(&raw3270_init_mutex); + spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); + rc = __raw3270_reset_device(rp); + spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); return rc; } @@ -739,13 +678,50 @@ raw3270_reset(struct raw3270_view *view) if (!rp || rp->view != view || test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) rc = -EACCES; - else if (!test_bit(RAW3270_FLAGS_READY, &rp->flags)) - rc = -ENODEV; + else if (!raw3270_state_ready(rp)) + rc = -EBUSY; else rc = raw3270_reset_device(view->dev); return rc; } +static int +raw3270_init_irq(struct raw3270_view *view, struct raw3270_request *rq, + struct irb *irb) +{ + struct raw3270 *rp; + + /* + * Unit-Check Processing: + * Expect Command Reject or Intervention Required. + */ + if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { + /* Request finished abnormally. */ + if (irb->ecw[0] & SNS0_INTERVENTION_REQ) { + set_bit(RAW3270_FLAGS_BUSY, &view->dev->flags); + return RAW3270_IO_BUSY; + } + } + if (rq) { + if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { + if (irb->ecw[0] & SNS0_CMD_REJECT) + rq->rc = -EOPNOTSUPP; + else + rq->rc = -EIO; + } + } + if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { + /* Queue read modified after attention interrupt */ + rp = view->dev; + raw3270_read_modified(rp); + } + return RAW3270_IO_DONE; +} + +static struct raw3270_fn raw3270_init_fn = { + .intv = raw3270_init_irq +}; + /* * Setup new 3270 device. */ @@ -774,6 +750,10 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc) INIT_LIST_HEAD(&rp->req_queue); INIT_LIST_HEAD(&rp->view_list); + rp->init_view.dev = rp; + rp->init_view.fn = &raw3270_init_fn; + rp->view = &rp->init_view; + /* * Add device to list and find the smallest unused minor * number for it. Note: there is no device with minor 0, @@ -807,31 +787,46 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc) } #ifdef CONFIG_TN3270_CONSOLE +/* Tentative definition - see below for actual definition. */ +static struct ccw_driver raw3270_ccw_driver; + /* * Setup 3270 device configured as console. */ -struct raw3270 __init *raw3270_setup_console(struct ccw_device *cdev) +struct raw3270 __init *raw3270_setup_console(void) { + struct ccw_device *cdev; + unsigned long flags; struct raw3270 *rp; char *ascebc; int rc; + cdev = ccw_device_create_console(&raw3270_ccw_driver); + if (IS_ERR(cdev)) + return ERR_CAST(cdev); + rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA); ascebc = kzalloc(256, GFP_KERNEL); rc = raw3270_setup_device(cdev, rp, ascebc); if (rc) return ERR_PTR(rc); set_bit(RAW3270_FLAGS_CONSOLE, &rp->flags); - rc = raw3270_reset_device(rp); - if (rc) - return ERR_PTR(rc); - rc = raw3270_size_device(rp); - if (rc) - return ERR_PTR(rc); - rc = raw3270_reset_device(rp); - if (rc) + + rc = ccw_device_enable_console(cdev); + if (rc) { + ccw_device_destroy_console(cdev); return ERR_PTR(rc); - set_bit(RAW3270_FLAGS_READY, &rp->flags); + } + + spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); + do { + __raw3270_reset_device(rp); + while (!raw3270_state_final(rp)) { + ccw_device_wait_idle(rp->cdev); + barrier(); + } + } while (rp->state != RAW3270_STATE_READY); + spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); return rp; } @@ -841,7 +836,7 @@ raw3270_wait_cons_dev(struct raw3270 *rp) unsigned long flags; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - wait_cons_dev(); + ccw_device_wait_idle(rp->cdev); spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); } @@ -857,7 +852,7 @@ raw3270_create_device(struct ccw_device *cdev) char *ascebc; int rc; - rp = kmalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA); + rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA); if (!rp) return ERR_PTR(-ENOMEM); ascebc = kmalloc(256, GFP_KERNEL); @@ -893,13 +888,13 @@ raw3270_activate_view(struct raw3270_view *view) spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); if (rp->view == view) rc = 0; - else if (!test_bit(RAW3270_FLAGS_READY, &rp->flags)) - rc = -ENODEV; + else if (!raw3270_state_ready(rp)) + rc = -EBUSY; else if (test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) rc = -EACCES; else { oldview = NULL; - if (rp->view) { + if (rp->view && rp->view->fn->deactivate) { oldview = rp->view; oldview->fn->deactivate(oldview); } @@ -944,7 +939,7 @@ raw3270_deactivate_view(struct raw3270_view *view) list_del_init(&view->list); list_add_tail(&view->list, &rp->view_list); /* Try to activate another view. */ - if (test_bit(RAW3270_FLAGS_READY, &rp->flags) && + if (raw3270_state_ready(rp) && !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) { list_for_each_entry(view, &rp->view_list, list) { rp->view = view; @@ -975,18 +970,16 @@ raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor) if (rp->minor != minor) continue; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - if (test_bit(RAW3270_FLAGS_READY, &rp->flags)) { - atomic_set(&view->ref_count, 2); - view->dev = rp; - view->fn = fn; - view->model = rp->model; - view->rows = rp->rows; - view->cols = rp->cols; - view->ascebc = rp->ascebc; - spin_lock_init(&view->lock); - list_add(&view->list, &rp->view_list); - rc = 0; - } + atomic_set(&view->ref_count, 2); + view->dev = rp; + view->fn = fn; + view->model = rp->model; + view->rows = rp->rows; + view->cols = rp->cols; + view->ascebc = rp->ascebc; + spin_lock_init(&view->lock); + list_add(&view->list, &rp->view_list); + rc = 0; spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); break; } @@ -1010,14 +1003,11 @@ raw3270_find_view(struct raw3270_fn *fn, int minor) if (rp->minor != minor) continue; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - if (test_bit(RAW3270_FLAGS_READY, &rp->flags)) { - view = ERR_PTR(-ENOENT); - list_for_each_entry(tmp, &rp->view_list, list) { - if (tmp->fn == fn) { - raw3270_get_view(tmp); - view = tmp; - break; - } + list_for_each_entry(tmp, &rp->view_list, list) { + if (tmp->fn == fn) { + raw3270_get_view(tmp); + view = tmp; + break; } } spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); @@ -1044,7 +1034,7 @@ raw3270_del_view(struct raw3270_view *view) rp->view = NULL; } list_del_init(&view->list); - if (!rp->view && test_bit(RAW3270_FLAGS_READY, &rp->flags) && + if (!rp->view && raw3270_state_ready(rp) && !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) { /* Try to activate another view. */ list_for_each_entry(nv, &rp->view_list, list) { @@ -1072,10 +1062,6 @@ raw3270_delete_device(struct raw3270 *rp) /* Remove from device chain. */ mutex_lock(&raw3270_mutex); - if (rp->clttydev && !IS_ERR(rp->clttydev)) - device_destroy(class3270, MKDEV(IBM_TTY3270_MAJOR, rp->minor)); - if (rp->cltubdev && !IS_ERR(rp->cltubdev)) - device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, rp->minor)); list_del_init(&rp->list); mutex_unlock(&raw3270_mutex); @@ -1139,75 +1125,34 @@ static struct attribute_group raw3270_attr_group = { static int raw3270_create_attributes(struct raw3270 *rp) { - int rc; - - rc = sysfs_create_group(&rp->cdev->dev.kobj, &raw3270_attr_group); - if (rc) - goto out; - - rp->clttydev = device_create(class3270, &rp->cdev->dev, - MKDEV(IBM_TTY3270_MAJOR, rp->minor), NULL, - "tty%s", dev_name(&rp->cdev->dev)); - if (IS_ERR(rp->clttydev)) { - rc = PTR_ERR(rp->clttydev); - goto out_ttydev; - } - - rp->cltubdev = device_create(class3270, &rp->cdev->dev, - MKDEV(IBM_FS3270_MAJOR, rp->minor), NULL, - "tub%s", dev_name(&rp->cdev->dev)); - if (!IS_ERR(rp->cltubdev)) - goto out; - - rc = PTR_ERR(rp->cltubdev); - device_destroy(class3270, MKDEV(IBM_TTY3270_MAJOR, rp->minor)); - -out_ttydev: - sysfs_remove_group(&rp->cdev->dev.kobj, &raw3270_attr_group); -out: - return rc; + return sysfs_create_group(&rp->cdev->dev.kobj, &raw3270_attr_group); } /* * Notifier for device addition/removal */ -struct raw3270_notifier { - struct list_head list; - void (*notifier)(int, int); -}; - static LIST_HEAD(raw3270_notifier); -int raw3270_register_notifier(void (*notifier)(int, int)) +int raw3270_register_notifier(struct raw3270_notifier *notifier) { - struct raw3270_notifier *np; struct raw3270 *rp; - np = kmalloc(sizeof(struct raw3270_notifier), GFP_KERNEL); - if (!np) - return -ENOMEM; - np->notifier = notifier; mutex_lock(&raw3270_mutex); - list_add_tail(&np->list, &raw3270_notifier); - list_for_each_entry(rp, &raw3270_devices, list) { - get_device(&rp->cdev->dev); - notifier(rp->minor, 1); - } + list_add_tail(¬ifier->list, &raw3270_notifier); + list_for_each_entry(rp, &raw3270_devices, list) + notifier->create(rp->minor); mutex_unlock(&raw3270_mutex); return 0; } -void raw3270_unregister_notifier(void (*notifier)(int, int)) +void raw3270_unregister_notifier(struct raw3270_notifier *notifier) { - struct raw3270_notifier *np; + struct raw3270 *rp; mutex_lock(&raw3270_mutex); - list_for_each_entry(np, &raw3270_notifier, list) - if (np->notifier == notifier) { - list_del(&np->list); - kfree(np); - break; - } + list_for_each_entry(rp, &raw3270_devices, list) + notifier->destroy(rp->minor); + list_del(¬ifier->list); mutex_unlock(&raw3270_mutex); } @@ -1217,29 +1162,20 @@ void raw3270_unregister_notifier(void (*notifier)(int, int)) static int raw3270_set_online (struct ccw_device *cdev) { - struct raw3270 *rp; struct raw3270_notifier *np; + struct raw3270 *rp; int rc; rp = raw3270_create_device(cdev); if (IS_ERR(rp)) return PTR_ERR(rp); - rc = raw3270_reset_device(rp); - if (rc) - goto failure; - rc = raw3270_size_device(rp); - if (rc) - goto failure; - rc = raw3270_reset_device(rp); - if (rc) - goto failure; rc = raw3270_create_attributes(rp); if (rc) goto failure; - set_bit(RAW3270_FLAGS_READY, &rp->flags); + raw3270_reset_device(rp); mutex_lock(&raw3270_mutex); list_for_each_entry(np, &raw3270_notifier, list) - np->notifier(rp->minor, 1); + np->create(rp->minor); mutex_unlock(&raw3270_mutex); return 0; @@ -1268,14 +1204,14 @@ raw3270_remove (struct ccw_device *cdev) */ if (rp == NULL) return; - clear_bit(RAW3270_FLAGS_READY, &rp->flags); sysfs_remove_group(&cdev->dev.kobj, &raw3270_attr_group); /* Deactivate current view and remove all views. */ spin_lock_irqsave(get_ccwdev_lock(cdev), flags); if (rp->view) { - rp->view->fn->deactivate(rp->view); + if (rp->view->fn->deactivate) + rp->view->fn->deactivate(rp->view); rp->view = NULL; } while (!list_empty(&rp->view_list)) { @@ -1290,7 +1226,7 @@ raw3270_remove (struct ccw_device *cdev) mutex_lock(&raw3270_mutex); list_for_each_entry(np, &raw3270_notifier, list) - np->notifier(rp->minor, 0); + np->destroy(rp->minor); mutex_unlock(&raw3270_mutex); /* Reset 3270 device. */ @@ -1324,7 +1260,7 @@ static int raw3270_pm_stop(struct ccw_device *cdev) if (!rp) return 0; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); - if (rp->view) + if (rp->view && rp->view->fn->deactivate) rp->view->fn->deactivate(rp->view); if (!test_bit(RAW3270_FLAGS_CONSOLE, &rp->flags)) { /* @@ -1351,7 +1287,7 @@ static int raw3270_pm_start(struct ccw_device *cdev) return 0; spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags); clear_bit(RAW3270_FLAGS_FROZEN, &rp->flags); - if (rp->view) + if (rp->view && rp->view->fn->activate) rp->view->fn->activate(rp->view); spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); return 0; @@ -1364,7 +1300,7 @@ void raw3270_pm_unfreeze(struct raw3270_view *view) rp = view->dev; if (rp && test_bit(RAW3270_FLAGS_FROZEN, &rp->flags)) - ccw_device_force_console(); + ccw_device_force_console(rp->cdev); #endif } @@ -1434,6 +1370,7 @@ MODULE_LICENSE("GPL"); module_init(raw3270_init); module_exit(raw3270_exit); +EXPORT_SYMBOL(class3270); EXPORT_SYMBOL(raw3270_request_alloc); EXPORT_SYMBOL(raw3270_request_free); EXPORT_SYMBOL(raw3270_request_reset); diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h index ed34eb2199c..e1e41c2861f 100644 --- a/drivers/s390/char/raw3270.h +++ b/drivers/s390/char/raw3270.h @@ -91,6 +91,7 @@ struct raw3270_iocb { struct raw3270; struct raw3270_view; +extern struct class *class3270; /* 3270 CCW request */ struct raw3270_request { @@ -140,6 +141,7 @@ struct raw3270_fn { struct raw3270_request *, struct irb *); void (*release)(struct raw3270_view *); void (*free)(struct raw3270_view *); + void (*resize)(struct raw3270_view *, int, int, int); }; /* @@ -171,6 +173,7 @@ int raw3270_start_locked(struct raw3270_view *, struct raw3270_request *); int raw3270_start_irq(struct raw3270_view *, struct raw3270_request *); int raw3270_reset(struct raw3270_view *); struct raw3270_view *raw3270_view(struct raw3270_view *); +int raw3270_view_active(struct raw3270_view *); /* Reference count inliner for view structures. */ static inline void @@ -188,12 +191,18 @@ raw3270_put_view(struct raw3270_view *view) wake_up(&raw3270_wait_queue); } -struct raw3270 *raw3270_setup_console(struct ccw_device *cdev); +struct raw3270 *raw3270_setup_console(void); void raw3270_wait_cons_dev(struct raw3270 *); /* Notifier for device addition/removal */ -int raw3270_register_notifier(void (*notifier)(int, int)); -void raw3270_unregister_notifier(void (*notifier)(int, int)); +struct raw3270_notifier { + struct list_head list; + void (*create)(int minor); + void (*destroy)(int minor); +}; + +int raw3270_register_notifier(struct raw3270_notifier *); +void raw3270_unregister_notifier(struct raw3270_notifier *); void raw3270_pm_unfreeze(struct raw3270_view *); /* diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index 12c16a65dd2..c316051d9bd 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -50,16 +50,50 @@ static char sclp_init_sccb[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); /* Suspend request */ static DECLARE_COMPLETION(sclp_request_queue_flushed); +/* Number of console pages to allocate, used by sclp_con.c and sclp_vt220.c */ +int sclp_console_pages = SCLP_CONSOLE_PAGES; +/* Flag to indicate if buffer pages are dropped on buffer full condition */ +int sclp_console_drop = 0; +/* Number of times the console dropped buffer pages */ +unsigned long sclp_console_full; + static void sclp_suspend_req_cb(struct sclp_req *req, void *data) { complete(&sclp_request_queue_flushed); } +static int __init sclp_setup_console_pages(char *str) +{ + int pages, rc; + + rc = kstrtoint(str, 0, &pages); + if (!rc && pages >= SCLP_CONSOLE_PAGES) + sclp_console_pages = pages; + return 1; +} + +__setup("sclp_con_pages=", sclp_setup_console_pages); + +static int __init sclp_setup_console_drop(char *str) +{ + int drop, rc; + + rc = kstrtoint(str, 0, &drop); + if (!rc && drop) + sclp_console_drop = 1; + return 1; +} + +__setup("sclp_con_drop=", sclp_setup_console_drop); + static struct sclp_req sclp_suspend_req; /* Timer for request retries. */ static struct timer_list sclp_request_timer; +/* Timer for queued requests. */ +static struct timer_list sclp_queue_timer; + /* Internal state: is the driver initialized? */ static volatile enum sclp_init_state_t { sclp_init_state_uninitialized, @@ -117,14 +151,19 @@ static int sclp_init(void); int sclp_service_call(sclp_cmdw_t command, void *sccb) { - int cc; + int cc = 4; /* Initialize for program check handling */ asm volatile( - " .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */ - " ipm %0\n" - " srl %0,28" - : "=&d" (cc) : "d" (command), "a" (__pa(sccb)) + "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */ + "1: ipm %0\n" + " srl %0,28\n" + "2:\n" + EX_TABLE(0b, 2b) + EX_TABLE(1b, 2b) + : "+&d" (cc) : "d" (command), "a" (__pa(sccb)) : "cc", "memory"); + if (cc == 4) + return -EINVAL; if (cc == 3) return -EIO; if (cc == 2) @@ -179,6 +218,76 @@ sclp_request_timeout(unsigned long data) sclp_process_queue(); } +/* + * Returns the expire value in jiffies of the next pending request timeout, + * if any. Needs to be called with sclp_lock. + */ +static unsigned long __sclp_req_queue_find_next_timeout(void) +{ + unsigned long expires_next = 0; + struct sclp_req *req; + + list_for_each_entry(req, &sclp_req_queue, list) { + if (!req->queue_expires) + continue; + if (!expires_next || + (time_before(req->queue_expires, expires_next))) + expires_next = req->queue_expires; + } + return expires_next; +} + +/* + * Returns expired request, if any, and removes it from the list. + */ +static struct sclp_req *__sclp_req_queue_remove_expired_req(void) +{ + unsigned long flags, now; + struct sclp_req *req; + + spin_lock_irqsave(&sclp_lock, flags); + now = jiffies; + /* Don't need list_for_each_safe because we break out after list_del */ + list_for_each_entry(req, &sclp_req_queue, list) { + if (!req->queue_expires) + continue; + if (time_before_eq(req->queue_expires, now)) { + if (req->status == SCLP_REQ_QUEUED) { + req->status = SCLP_REQ_QUEUED_TIMEOUT; + list_del(&req->list); + goto out; + } + } + } + req = NULL; +out: + spin_unlock_irqrestore(&sclp_lock, flags); + return req; +} + +/* + * Timeout handler for queued requests. Removes request from list and + * invokes callback. This timer can be set per request in situations where + * waiting too long would be harmful to the system, e.g. during SE reboot. + */ +static void sclp_req_queue_timeout(unsigned long data) +{ + unsigned long flags, expires_next; + struct sclp_req *req; + + do { + req = __sclp_req_queue_remove_expired_req(); + if (req && req->callback) + req->callback(req, req->callback_data); + } while (req); + + spin_lock_irqsave(&sclp_lock, flags); + expires_next = __sclp_req_queue_find_next_timeout(); + if (expires_next) + mod_timer(&sclp_queue_timer, expires_next); + spin_unlock_irqrestore(&sclp_lock, flags); +} + /* Try to start a request. Return zero if the request was successfully * started or if it will be started at a later time. Return non-zero otherwise. * Called while sclp_lock is locked. */ @@ -281,6 +390,13 @@ sclp_add_request(struct sclp_req *req) req->start_count = 0; list_add_tail(&req->list, &sclp_req_queue); rc = 0; + if (req->queue_timeout) { + req->queue_expires = jiffies + req->queue_timeout * HZ; + if (!timer_pending(&sclp_queue_timer) || + time_after(sclp_queue_timer.expires, req->queue_expires)) + mod_timer(&sclp_queue_timer, req->queue_expires); + } else + req->queue_expires = 0; /* Start if request is first in list */ if (sclp_running_state == sclp_running_state_idle && req->list.prev == &sclp_req_queue) { @@ -450,7 +566,7 @@ sclp_sync_wait(void) timeout = 0; if (timer_pending(&sclp_request_timer)) { /* Get timeout TOD value */ - timeout = get_clock() + + timeout = get_tod_clock_fast() + sclp_tod_from_jiffies(sclp_request_timer.expires - jiffies); } @@ -472,7 +588,7 @@ sclp_sync_wait(void) while (sclp_running_state != sclp_running_state_idle) { /* Check for expired request timer */ if (timer_pending(&sclp_request_timer) && - get_clock() > timeout && + get_tod_clock_fast() > timeout && del_timer(&sclp_request_timer)) sclp_request_timer.function(sclp_request_timer.data); cpu_relax(); @@ -856,7 +972,7 @@ sclp_check_interface(void) spin_lock_irqsave(&sclp_lock, flags); /* Prepare init mask command */ - rc = register_external_interrupt(0x2401, sclp_check_handler); + rc = register_external_irq(EXT_IRQ_SERVICE_SIG, sclp_check_handler); if (rc) { spin_unlock_irqrestore(&sclp_lock, flags); return rc; @@ -874,12 +990,12 @@ sclp_check_interface(void) spin_unlock_irqrestore(&sclp_lock, flags); /* Enable service-signal interruption - needs to happen * with IRQs enabled. */ - service_subclass_irq_register(); + irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL); /* Wait for signal from interrupt or timeout */ sclp_sync_wait(); /* Disable service-signal interruption - needs to happen * with IRQs enabled. */ - service_subclass_irq_unregister(); + irq_subclass_unregister(IRQ_SUBCLASS_SERVICE_SIGNAL); spin_lock_irqsave(&sclp_lock, flags); del_timer(&sclp_request_timer); if (sclp_init_req.status == SCLP_REQ_DONE && @@ -889,7 +1005,7 @@ sclp_check_interface(void) } else rc = -EBUSY; } - unregister_external_interrupt(0x2401, sclp_check_handler); + unregister_external_irq(EXT_IRQ_SERVICE_SIG, sclp_check_handler); spin_unlock_irqrestore(&sclp_lock, flags); return rc; } @@ -1013,11 +1129,47 @@ static const struct dev_pm_ops sclp_pm_ops = { .restore = sclp_restore, }; +static ssize_t sclp_show_console_pages(struct device_driver *dev, char *buf) +{ + return sprintf(buf, "%i\n", sclp_console_pages); +} + +static DRIVER_ATTR(con_pages, S_IRUSR, sclp_show_console_pages, NULL); + +static ssize_t sclp_show_con_drop(struct device_driver *dev, char *buf) +{ + return sprintf(buf, "%i\n", sclp_console_drop); +} + +static DRIVER_ATTR(con_drop, S_IRUSR, sclp_show_con_drop, NULL); + +static ssize_t sclp_show_console_full(struct device_driver *dev, char *buf) +{ + return sprintf(buf, "%lu\n", sclp_console_full); +} + +static DRIVER_ATTR(con_full, S_IRUSR, sclp_show_console_full, NULL); + +static struct attribute *sclp_drv_attrs[] = { + &driver_attr_con_pages.attr, + &driver_attr_con_drop.attr, + &driver_attr_con_full.attr, + NULL, +}; +static struct attribute_group sclp_drv_attr_group = { + .attrs = sclp_drv_attrs, +}; +static const struct attribute_group *sclp_drv_attr_groups[] = { + &sclp_drv_attr_group, + NULL, +}; + static struct platform_driver sclp_pdrv = { .driver = { .name = "sclp", .owner = THIS_MODULE, .pm = &sclp_pm_ops, + .groups = sclp_drv_attr_groups, }, }; @@ -1041,6 +1193,8 @@ sclp_init(void) INIT_LIST_HEAD(&sclp_reg_list); list_add(&sclp_state_change_event.list, &sclp_reg_list); init_timer(&sclp_request_timer); + init_timer(&sclp_queue_timer); + sclp_queue_timer.function = sclp_req_queue_timeout; /* Check interface */ spin_unlock_irqrestore(&sclp_lock, flags); rc = sclp_check_interface(); @@ -1052,14 +1206,14 @@ sclp_init(void) if (rc) goto fail_init_state_uninitialized; /* Register interrupt handler */ - rc = register_external_interrupt(0x2401, sclp_interrupt_handler); + rc = register_external_irq(EXT_IRQ_SERVICE_SIG, sclp_interrupt_handler); if (rc) goto fail_unregister_reboot_notifier; sclp_init_state = sclp_init_state_initialized; spin_unlock_irqrestore(&sclp_lock, flags); /* Enable service-signal external interruption - needs to happen with * IRQs enabled. */ - service_subclass_irq_register(); + irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL); sclp_init_mask(1); return 0; @@ -1096,10 +1250,12 @@ static __init int sclp_initcall(void) rc = platform_driver_register(&sclp_pdrv); if (rc) return rc; + sclp_pdev = platform_device_register_simple("sclp", -1, NULL, 0); - rc = IS_ERR(sclp_pdev) ? PTR_ERR(sclp_pdev) : 0; + rc = PTR_ERR_OR_ZERO(sclp_pdev); if (rc) goto fail_platform_driver_unregister; + rc = atomic_notifier_chain_register(&panic_notifier_list, &sclp_on_panic_nb); if (rc) diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index 25bcd4c0ed8..a68b5ec7d04 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -15,7 +15,7 @@ /* maximum number of pages concerning our own memory management */ #define MAX_KMEM_PAGES (sizeof(unsigned long) << 3) -#define MAX_CONSOLE_PAGES 6 +#define SCLP_CONSOLE_PAGES 6 #define EVTYP_OPCMD 0x01 #define EVTYP_MSG 0x02 @@ -99,6 +99,7 @@ struct init_sccb { } __attribute__((packed)); extern u64 sclp_facilities; + #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) @@ -132,6 +133,11 @@ struct sclp_req { /* Callback that is called after reaching final status. */ void (*callback)(struct sclp_req *, void *data); void *callback_data; + int queue_timeout; /* request queue timeout (sec), set by + caller of sclp_add_request(), if + needed */ + /* Internal fields */ + unsigned long queue_expires; /* request queue timeout (jiffies) */ }; #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ @@ -139,6 +145,9 @@ struct sclp_req { #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ +#define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */ + +#define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */ /* function pointers that a high level driver has to use for registration */ /* of some routines it wants to be called from the low level driver */ @@ -171,10 +180,19 @@ int sclp_remove_processed(struct sccb_header *sccb); int sclp_deactivate(void); int sclp_reactivate(void); int sclp_service_call(sclp_cmdw_t command, void *sccb); +int sclp_sync_request(sclp_cmdw_t command, void *sccb); +int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); int sclp_sdias_init(void); void sclp_sdias_exit(void); +extern int sclp_console_pages; +extern int sclp_console_drop; +extern unsigned long sclp_console_full; +extern u8 sclp_fac84; +extern unsigned long long sclp_rzm; +extern unsigned long long sclp_rnmax; + /* useful inlines */ /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index c44d13f607b..6e14999f9e8 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -28,172 +28,6 @@ #include "sclp.h" -#define SCLP_CMDW_READ_SCP_INFO 0x00020001 -#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 - -struct read_info_sccb { - struct sccb_header header; /* 0-7 */ - u16 rnmax; /* 8-9 */ - u8 rnsize; /* 10 */ - u8 _reserved0[24 - 11]; /* 11-15 */ - u8 loadparm[8]; /* 24-31 */ - u8 _reserved1[48 - 32]; /* 32-47 */ - u64 facilities; /* 48-55 */ - u8 _reserved2[84 - 56]; /* 56-83 */ - u8 fac84; /* 84 */ - u8 fac85; /* 85 */ - u8 _reserved3[91 - 86]; /* 86-90 */ - u8 flags; /* 91 */ - u8 _reserved4[100 - 92]; /* 92-99 */ - u32 rnsize2; /* 100-103 */ - u64 rnmax2; /* 104-111 */ - u8 _reserved5[4096 - 112]; /* 112-4095 */ -} __attribute__((packed, aligned(PAGE_SIZE))); - -static struct init_sccb __initdata early_event_mask_sccb __aligned(PAGE_SIZE); -static struct read_info_sccb __initdata early_read_info_sccb; -static int __initdata early_read_info_sccb_valid; - -u64 sclp_facilities; -static u8 sclp_fac84; -static u8 sclp_fac85; -static unsigned long long rzm; -static unsigned long long rnmax; - -static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb) -{ - int rc; - - __ctl_set_bit(0, 9); - rc = sclp_service_call(cmd, sccb); - if (rc) - goto out; - __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | - PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT); - local_irq_disable(); -out: - /* Contents of the sccb might have changed. */ - barrier(); - __ctl_clear_bit(0, 9); - return rc; -} - -static void __init sclp_read_info_early(void) -{ - int rc; - int i; - struct read_info_sccb *sccb; - sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED, - SCLP_CMDW_READ_SCP_INFO}; - - sccb = &early_read_info_sccb; - for (i = 0; i < ARRAY_SIZE(commands); i++) { - do { - memset(sccb, 0, sizeof(*sccb)); - sccb->header.length = sizeof(*sccb); - sccb->header.function_code = 0x80; - sccb->header.control_mask[2] = 0x80; - rc = sclp_cmd_sync_early(commands[i], sccb); - } while (rc == -EBUSY); - - if (rc) - break; - if (sccb->header.response_code == 0x10) { - early_read_info_sccb_valid = 1; - break; - } - if (sccb->header.response_code != 0x1f0) - break; - } -} - -static void __init sclp_event_mask_early(void) -{ - struct init_sccb *sccb = &early_event_mask_sccb; - int rc; - - do { - memset(sccb, 0, sizeof(*sccb)); - sccb->header.length = sizeof(*sccb); - sccb->mask_length = sizeof(sccb_mask_t); - rc = sclp_cmd_sync_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb); - } while (rc == -EBUSY); -} - -void __init sclp_facilities_detect(void) -{ - struct read_info_sccb *sccb; - - sclp_read_info_early(); - if (!early_read_info_sccb_valid) - return; - - sccb = &early_read_info_sccb; - sclp_facilities = sccb->facilities; - sclp_fac84 = sccb->fac84; - sclp_fac85 = sccb->fac85; - rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2; - rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; - rzm <<= 20; - - sclp_event_mask_early(); -} - -bool __init sclp_has_linemode(void) -{ - struct init_sccb *sccb = &early_event_mask_sccb; - - if (sccb->header.response_code != 0x20) - return 0; - if (sccb->sclp_send_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK)) - return 1; - return 0; -} - -bool __init sclp_has_vt220(void) -{ - struct init_sccb *sccb = &early_event_mask_sccb; - - if (sccb->header.response_code != 0x20) - return 0; - if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK) - return 1; - return 0; -} - -unsigned long long sclp_get_rnmax(void) -{ - return rnmax; -} - -unsigned long long sclp_get_rzm(void) -{ - return rzm; -} - -u8 sclp_get_fac85(void) -{ - return sclp_fac85; -} -EXPORT_SYMBOL_GPL(sclp_get_fac85); - -/* - * This function will be called after sclp_facilities_detect(), which gets - * called from early.c code. Therefore the sccb should have valid contents. - */ -void __init sclp_get_ipl_info(struct sclp_ipl_info *info) -{ - struct read_info_sccb *sccb; - - if (!early_read_info_sccb_valid) - return; - sccb = &early_read_info_sccb; - info->is_valid = 1; - if (sccb->flags & 0x2) - info->has_dump = 1; - memcpy(&info->loadparm, &sccb->loadparm, LOADPARM_LEN); -} - static void sclp_sync_callback(struct sclp_req *req, void *data) { struct completion *completion = data; @@ -201,7 +35,12 @@ static void sclp_sync_callback(struct sclp_req *req, void *data) complete(completion); } -static int do_sync_request(sclp_cmdw_t cmd, void *sccb) +int sclp_sync_request(sclp_cmdw_t cmd, void *sccb) +{ + return sclp_sync_request_timeout(cmd, sccb, 0); +} + +int sclp_sync_request_timeout(sclp_cmdw_t cmd, void *sccb, int timeout) { struct completion completion; struct sclp_req *request; @@ -210,6 +49,8 @@ static int do_sync_request(sclp_cmdw_t cmd, void *sccb) request = kzalloc(sizeof(*request), GFP_KERNEL); if (!request) return -ENOMEM; + if (timeout) + request->queue_timeout = timeout; request->command = cmd; request->sccb = sccb; request->status = SCLP_REQ_FILLED; @@ -276,7 +117,8 @@ int sclp_get_cpu_info(struct sclp_cpu_info *info) if (!sccb) return -ENOMEM; sccb->header.length = sizeof(*sccb); - rc = do_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb); + rc = sclp_sync_request_timeout(SCLP_CMDW_READ_CPU_INFO, sccb, + SCLP_QUEUE_INTERVAL); if (rc) goto out; if (sccb->header.response_code != 0x0010) { @@ -310,7 +152,7 @@ static int do_cpu_configure(sclp_cmdw_t cmd) if (!sccb) return -ENOMEM; sccb->header.length = sizeof(*sccb); - rc = do_sync_request(cmd, sccb); + rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL); if (rc) goto out; switch (sccb->header.response_code) { @@ -351,7 +193,6 @@ struct memory_increment { struct list_head list; u16 rn; int standby; - int usecount; }; struct assign_storage_sccb { @@ -361,14 +202,14 @@ struct assign_storage_sccb { int arch_get_memory_phys_device(unsigned long start_pfn) { - if (!rzm) + if (!sclp_rzm) return 0; - return PFN_PHYS(start_pfn) >> ilog2(rzm); + return PFN_PHYS(start_pfn) >> ilog2(sclp_rzm); } static unsigned long long rn2addr(u16 rn) { - return (unsigned long long) (rn - 1) * rzm; + return (unsigned long long) (rn - 1) * sclp_rzm; } static int do_assign_storage(sclp_cmdw_t cmd, u16 rn) @@ -381,7 +222,7 @@ static int do_assign_storage(sclp_cmdw_t cmd, u16 rn) return -ENOMEM; sccb->header.length = PAGE_SIZE; sccb->rn = rn; - rc = do_sync_request(cmd, sccb); + rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL); if (rc) goto out; switch (sccb->header.response_code) { @@ -409,7 +250,7 @@ static int sclp_assign_storage(u16 rn) if (rc) return rc; start = rn2addr(rn); - storage_key_init_range(start, start + rzm); + storage_key_init_range(start, start + sclp_rzm); return 0; } @@ -436,7 +277,8 @@ static int sclp_attach_storage(u8 id) if (!sccb) return -ENOMEM; sccb->header.length = PAGE_SIZE; - rc = do_sync_request(0x00080001 | id << 8, sccb); + rc = sclp_sync_request_timeout(0x00080001 | id << 8, sccb, + SCLP_QUEUE_INTERVAL); if (rc) goto out; switch (sccb->header.response_code) { @@ -467,23 +309,12 @@ static int sclp_mem_change_state(unsigned long start, unsigned long size, istart = rn2addr(incr->rn); if (start + size - 1 < istart) break; - if (start > istart + rzm - 1) + if (start > istart + sclp_rzm - 1) continue; - if (online) { - if (incr->usecount++) - continue; - /* - * Don't break the loop if one assign fails. Loop may - * be walked again on CANCEL and we can't save - * information if state changed before or not. - * So continue and increase usecount for all increments. - */ + if (online) rc |= sclp_assign_storage(incr->rn); - } else { - if (--incr->usecount) - continue; + else sclp_unassign_storage(incr->rn); - } } return rc ? -EIO : 0; } @@ -542,7 +373,7 @@ static void __init add_memory_merged(u16 rn) if (!first_rn) goto skip_add; start = rn2addr(first_rn); - size = (unsigned long long ) num * rzm; + size = (unsigned long long) num * sclp_rzm; if (start >= VMEM_MAX_PHYS) goto skip_add; if (start + size > VMEM_MAX_PHYS) @@ -578,8 +409,6 @@ static void __init insert_increment(u16 rn, int standby, int assigned) return; new_incr->rn = rn; new_incr->standby = standby; - if (!standby) - new_incr->usecount = 1; last_rn = 0; prev = &sclp_mem_list; list_for_each_entry(incr, &sclp_mem_list, list) { @@ -592,7 +421,7 @@ static void __init insert_increment(u16 rn, int standby, int assigned) } if (!assigned) new_incr->rn = last_rn + 1; - if (new_incr->rn > rnmax) { + if (new_incr->rn > sclp_rnmax) { kfree(new_incr); return; } @@ -633,7 +462,7 @@ static int __init sclp_detect_standby_memory(void) struct read_storage_sccb *sccb; int i, id, assigned, rc; - if (!early_read_info_sccb_valid) + if (OLDMEM_BASE) /* No standby memory in kdump mode */ return 0; if ((sclp_facilities & 0xe00000000000ULL) != 0xe00000000000ULL) return 0; @@ -645,7 +474,7 @@ static int __init sclp_detect_standby_memory(void) for (id = 0; id <= sclp_max_storage_id; id++) { memset(sccb, 0, PAGE_SIZE); sccb->header.length = PAGE_SIZE; - rc = do_sync_request(0x00040001 | id << 8, sccb); + rc = sclp_sync_request(0x00040001 | id << 8, sccb); if (rc) goto out; switch (sccb->header.response_code) { @@ -677,7 +506,7 @@ static int __init sclp_detect_standby_memory(void) } if (rc || list_empty(&sclp_mem_list)) goto out; - for (i = 1; i <= rnmax - assigned; i++) + for (i = 1; i <= sclp_rnmax - assigned; i++) insert_increment(0, 1, 0); rc = register_memory_notifier(&sclp_mem_nb); if (rc) @@ -686,7 +515,7 @@ static int __init sclp_detect_standby_memory(void) if (rc) goto out; sclp_pdev = platform_device_register_simple("sclp_mem", -1, NULL, 0); - rc = IS_ERR(sclp_pdev) ? PTR_ERR(sclp_pdev) : 0; + rc = PTR_ERR_OR_ZERO(sclp_pdev); if (rc) goto out_driver; sclp_add_standby_memory(); @@ -732,7 +561,7 @@ static int do_pci_configure(sclp_cmdw_t cmd, u32 fid) sccb->header.length = PAGE_SIZE; sccb->atype = SCLP_RECONFIG_PCI_ATPYE; sccb->aid = fid; - rc = do_sync_request(cmd, sccb); + rc = sclp_sync_request(cmd, sccb); if (rc) goto out; switch (sccb->header.response_code) { @@ -789,7 +618,7 @@ static int do_chp_configure(sclp_cmdw_t cmd) if (!sccb) return -ENOMEM; sccb->header.length = sizeof(*sccb); - rc = do_sync_request(cmd, sccb); + rc = sclp_sync_request(cmd, sccb); if (rc) goto out; switch (sccb->header.response_code) { @@ -864,7 +693,7 @@ int sclp_chp_read_info(struct sclp_chp_info *info) if (!sccb) return -ENOMEM; sccb->header.length = sizeof(*sccb); - rc = do_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb); + rc = sclp_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb); if (rc) goto out; if (sccb->header.response_code != 0x0010) { @@ -880,3 +709,8 @@ out: free_page((unsigned long) sccb); return rc; } + +bool sclp_has_sprp(void) +{ + return !!(sclp_fac84 & 0x2); +} diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c index ecf45c54f8c..5880def98fc 100644 --- a/drivers/s390/char/sclp_con.c +++ b/drivers/s390/char/sclp_con.c @@ -130,6 +130,31 @@ sclp_console_timeout(unsigned long data) } /* + * Drop oldest console buffer if sclp_con_drop is set + */ +static int +sclp_console_drop_buffer(void) +{ + struct list_head *list; + struct sclp_buffer *buffer; + void *page; + + if (!sclp_console_drop) + return 0; + list = sclp_con_outqueue.next; + if (sclp_con_queue_running) + /* The first element is in I/O */ + list = list->next; + if (list == &sclp_con_outqueue) + return 0; + list_del(list); + buffer = list_entry(list, struct sclp_buffer, list); + page = sclp_unmake_buffer(buffer); + list_add_tail((struct list_head *) page, &sclp_con_pages); + return 1; +} + +/* * Writes the given message to S390 system console */ static void @@ -150,9 +175,13 @@ sclp_console_write(struct console *console, const char *message, do { /* make sure we have a console output buffer */ if (sclp_conbuf == NULL) { + if (list_empty(&sclp_con_pages)) + sclp_console_full++; while (list_empty(&sclp_con_pages)) { if (sclp_con_suspended) goto out; + if (sclp_console_drop_buffer()) + break; spin_unlock_irqrestore(&sclp_con_lock, flags); sclp_sync_wait(); spin_lock_irqsave(&sclp_con_lock, flags); @@ -297,7 +326,7 @@ sclp_console_init(void) return rc; /* Allocate pages for output buffering */ INIT_LIST_HEAD(&sclp_con_pages); - for (i = 0; i < MAX_CONSOLE_PAGES; i++) { + for (i = 0; i < sclp_console_pages; i++) { page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); list_add_tail(page, &sclp_con_pages); } diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index 444d36183a2..94415620747 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c @@ -32,7 +32,7 @@ static void sclp_cpu_capability_notify(struct work_struct *work) struct device *dev; s390_adjust_jiffies(); - pr_warning("cpu capability changed.\n"); + pr_info("CPU capability may have changed\n"); get_online_cpus(); for_each_online_cpu(cpu) { dev = get_cpu_device(cpu); diff --git a/drivers/s390/char/sclp_ctl.c b/drivers/s390/char/sclp_ctl.c new file mode 100644 index 00000000000..648cb86afd4 --- /dev/null +++ b/drivers/s390/char/sclp_ctl.c @@ -0,0 +1,144 @@ +/* + * IOCTL interface for SCLP + * + * Copyright IBM Corp. 2012 + * + * Author: Michael Holzheu <holzheu@linux.vnet.ibm.com> + */ + +#include <linux/compat.h> +#include <linux/uaccess.h> +#include <linux/miscdevice.h> +#include <linux/gfp.h> +#include <linux/module.h> +#include <linux/ioctl.h> +#include <linux/fs.h> +#include <asm/compat.h> +#include <asm/sclp_ctl.h> +#include <asm/sclp.h> + +#include "sclp.h" + +/* + * Supported command words + */ +static unsigned int sclp_ctl_sccb_wlist[] = { + 0x00400002, + 0x00410002, +}; + +/* + * Check if command word is supported + */ +static int sclp_ctl_cmdw_supported(unsigned int cmdw) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sclp_ctl_sccb_wlist); i++) { + if (cmdw == sclp_ctl_sccb_wlist[i]) + return 1; + } + return 0; +} + +static void __user *u64_to_uptr(u64 value) +{ + if (is_compat_task()) + return compat_ptr(value); + else + return (void __user *)(unsigned long)value; +} + +/* + * Start SCLP request + */ +static int sclp_ctl_ioctl_sccb(void __user *user_area) +{ + struct sclp_ctl_sccb ctl_sccb; + struct sccb_header *sccb; + int rc; + + if (copy_from_user(&ctl_sccb, user_area, sizeof(ctl_sccb))) + return -EFAULT; + if (!sclp_ctl_cmdw_supported(ctl_sccb.cmdw)) + return -EOPNOTSUPP; + sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + if (!sccb) + return -ENOMEM; + if (copy_from_user(sccb, u64_to_uptr(ctl_sccb.sccb), sizeof(*sccb))) { + rc = -EFAULT; + goto out_free; + } + if (sccb->length > PAGE_SIZE || sccb->length < 8) + return -EINVAL; + if (copy_from_user(sccb, u64_to_uptr(ctl_sccb.sccb), sccb->length)) { + rc = -EFAULT; + goto out_free; + } + rc = sclp_sync_request(ctl_sccb.cmdw, sccb); + if (rc) + goto out_free; + if (copy_to_user(u64_to_uptr(ctl_sccb.sccb), sccb, sccb->length)) + rc = -EFAULT; +out_free: + free_page((unsigned long) sccb); + return rc; +} + +/* + * SCLP SCCB ioctl function + */ +static long sclp_ctl_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg) +{ + void __user *argp; + + if (is_compat_task()) + argp = compat_ptr(arg); + else + argp = (void __user *) arg; + switch (cmd) { + case SCLP_CTL_SCCB: + return sclp_ctl_ioctl_sccb(argp); + default: /* unknown ioctl number */ + return -ENOTTY; + } +} + +/* + * File operations + */ +static const struct file_operations sclp_ctl_fops = { + .owner = THIS_MODULE, + .open = nonseekable_open, + .unlocked_ioctl = sclp_ctl_ioctl, + .compat_ioctl = sclp_ctl_ioctl, + .llseek = no_llseek, +}; + +/* + * Misc device definition + */ +static struct miscdevice sclp_ctl_device = { + .minor = MISC_DYNAMIC_MINOR, + .name = "sclp", + .fops = &sclp_ctl_fops, +}; + +/* + * Register sclp_ctl misc device + */ +static int __init sclp_ctl_init(void) +{ + return misc_register(&sclp_ctl_device); +} +module_init(sclp_ctl_init); + +/* + * Deregister sclp_ctl misc device + */ +static void __exit sclp_ctl_exit(void) +{ + misc_deregister(&sclp_ctl_device); +} +module_exit(sclp_ctl_exit); diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c new file mode 100644 index 00000000000..1918d9dff45 --- /dev/null +++ b/drivers/s390/char/sclp_early.c @@ -0,0 +1,315 @@ +/* + * SCLP early driver + * + * Copyright IBM Corp. 2013 + */ + +#define KMSG_COMPONENT "sclp_early" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <asm/ctl_reg.h> +#include <asm/sclp.h> +#include <asm/ipl.h> +#include "sclp_sdias.h" +#include "sclp.h" + +#define SCLP_CMDW_READ_SCP_INFO 0x00020001 +#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 + +struct read_info_sccb { + struct sccb_header header; /* 0-7 */ + u16 rnmax; /* 8-9 */ + u8 rnsize; /* 10 */ + u8 _reserved0[16 - 11]; /* 11-15 */ + u16 ncpurl; /* 16-17 */ + u16 cpuoff; /* 18-19 */ + u8 _reserved7[24 - 20]; /* 20-23 */ + u8 loadparm[8]; /* 24-31 */ + u8 _reserved1[48 - 32]; /* 32-47 */ + u64 facilities; /* 48-55 */ + u8 _reserved2a[76 - 56]; /* 56-75 */ + u32 ibc; /* 76-79 */ + u8 _reserved2b[84 - 80]; /* 80-83 */ + u8 fac84; /* 84 */ + u8 fac85; /* 85 */ + u8 _reserved3[91 - 86]; /* 86-90 */ + u8 flags; /* 91 */ + u8 _reserved4[100 - 92]; /* 92-99 */ + u32 rnsize2; /* 100-103 */ + u64 rnmax2; /* 104-111 */ + u8 _reserved5[120 - 112]; /* 112-119 */ + u16 hcpua; /* 120-121 */ + u8 _reserved6[4096 - 122]; /* 122-4095 */ +} __packed __aligned(PAGE_SIZE); + +static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata; +static unsigned int sclp_con_has_vt220 __initdata; +static unsigned int sclp_con_has_linemode __initdata; +static unsigned long sclp_hsa_size; +static unsigned int sclp_max_cpu; +static struct sclp_ipl_info sclp_ipl_info; +static unsigned char sclp_siif; +static u32 sclp_ibc; + +u64 sclp_facilities; +u8 sclp_fac84; +unsigned long long sclp_rzm; +unsigned long long sclp_rnmax; + +static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb) +{ + int rc; + + __ctl_set_bit(0, 9); + rc = sclp_service_call(cmd, sccb); + if (rc) + goto out; + __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | + PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT); + local_irq_disable(); +out: + /* Contents of the sccb might have changed. */ + barrier(); + __ctl_clear_bit(0, 9); + return rc; +} + +static int __init sclp_read_info_early(struct read_info_sccb *sccb) +{ + int rc, i; + sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED, + SCLP_CMDW_READ_SCP_INFO}; + + for (i = 0; i < ARRAY_SIZE(commands); i++) { + do { + memset(sccb, 0, sizeof(*sccb)); + sccb->header.length = sizeof(*sccb); + sccb->header.function_code = 0x80; + sccb->header.control_mask[2] = 0x80; + rc = sclp_cmd_sync_early(commands[i], sccb); + } while (rc == -EBUSY); + + if (rc) + break; + if (sccb->header.response_code == 0x10) + return 0; + if (sccb->header.response_code != 0x1f0) + break; + } + return -EIO; +} + +static void __init sclp_facilities_detect(struct read_info_sccb *sccb) +{ + struct sclp_cpu_entry *cpue; + u16 boot_cpu_address, cpu; + + if (sclp_read_info_early(sccb)) + return; + + sclp_facilities = sccb->facilities; + sclp_fac84 = sccb->fac84; + if (sccb->fac85 & 0x02) + S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP; + sclp_rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2; + sclp_rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; + sclp_rzm <<= 20; + sclp_ibc = sccb->ibc; + + if (!sccb->hcpua) { + if (MACHINE_IS_VM) + sclp_max_cpu = 64; + else + sclp_max_cpu = sccb->ncpurl; + } else { + sclp_max_cpu = sccb->hcpua + 1; + } + + boot_cpu_address = stap(); + cpue = (void *)sccb + sccb->cpuoff; + for (cpu = 0; cpu < sccb->ncpurl; cpue++, cpu++) { + if (boot_cpu_address != cpue->address) + continue; + sclp_siif = cpue->siif; + break; + } + + /* Save IPL information */ + sclp_ipl_info.is_valid = 1; + if (sccb->flags & 0x2) + sclp_ipl_info.has_dump = 1; + memcpy(&sclp_ipl_info.loadparm, &sccb->loadparm, LOADPARM_LEN); +} + +bool __init sclp_has_linemode(void) +{ + return !!sclp_con_has_linemode; +} + +bool __init sclp_has_vt220(void) +{ + return !!sclp_con_has_vt220; +} + +unsigned long long sclp_get_rnmax(void) +{ + return sclp_rnmax; +} + +unsigned long long sclp_get_rzm(void) +{ + return sclp_rzm; +} + +unsigned int sclp_get_max_cpu(void) +{ + return sclp_max_cpu; +} + +int sclp_has_siif(void) +{ + return sclp_siif; +} +EXPORT_SYMBOL(sclp_has_siif); + +unsigned int sclp_get_ibc(void) +{ + return sclp_ibc; +} +EXPORT_SYMBOL(sclp_get_ibc); + +/* + * This function will be called after sclp_facilities_detect(), which gets + * called from early.c code. The sclp_facilities_detect() function retrieves + * and saves the IPL information. + */ +void __init sclp_get_ipl_info(struct sclp_ipl_info *info) +{ + *info = sclp_ipl_info; +} + +static int __init sclp_cmd_early(sclp_cmdw_t cmd, void *sccb) +{ + int rc; + + do { + rc = sclp_cmd_sync_early(cmd, sccb); + } while (rc == -EBUSY); + + if (rc) + return -EIO; + if (((struct sccb_header *) sccb)->response_code != 0x0020) + return -EIO; + return 0; +} + +static void __init sccb_init_eq_size(struct sdias_sccb *sccb) +{ + memset(sccb, 0, sizeof(*sccb)); + + sccb->hdr.length = sizeof(*sccb); + sccb->evbuf.hdr.length = sizeof(struct sdias_evbuf); + sccb->evbuf.hdr.type = EVTYP_SDIAS; + sccb->evbuf.event_qual = SDIAS_EQ_SIZE; + sccb->evbuf.data_id = SDIAS_DI_FCP_DUMP; + sccb->evbuf.event_id = 4712; + sccb->evbuf.dbs = 1; +} + +static int __init sclp_set_event_mask(struct init_sccb *sccb, + unsigned long receive_mask, + unsigned long send_mask) +{ + memset(sccb, 0, sizeof(*sccb)); + sccb->header.length = sizeof(*sccb); + sccb->mask_length = sizeof(sccb_mask_t); + sccb->receive_mask = receive_mask; + sccb->send_mask = send_mask; + return sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb); +} + +static long __init sclp_hsa_size_init(struct sdias_sccb *sccb) +{ + sccb_init_eq_size(sccb); + if (sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_DATA, sccb)) + return -EIO; + if (sccb->evbuf.blk_cnt == 0) + return 0; + return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE; +} + +static long __init sclp_hsa_copy_wait(struct sccb_header *sccb) +{ + memset(sccb, 0, PAGE_SIZE); + sccb->length = PAGE_SIZE; + if (sclp_cmd_early(SCLP_CMDW_READ_EVENT_DATA, sccb)) + return -EIO; + if (((struct sdias_sccb *) sccb)->evbuf.blk_cnt == 0) + return 0; + return (((struct sdias_sccb *) sccb)->evbuf.blk_cnt - 1) * PAGE_SIZE; +} + +unsigned long sclp_get_hsa_size(void) +{ + return sclp_hsa_size; +} + +static void __init sclp_hsa_size_detect(void *sccb) +{ + long size; + + /* First try synchronous interface (LPAR) */ + if (sclp_set_event_mask(sccb, 0, 0x40000010)) + return; + size = sclp_hsa_size_init(sccb); + if (size < 0) + return; + if (size != 0) + goto out; + /* Then try asynchronous interface (z/VM) */ + if (sclp_set_event_mask(sccb, 0x00000010, 0x40000010)) + return; + size = sclp_hsa_size_init(sccb); + if (size < 0) + return; + size = sclp_hsa_copy_wait(sccb); + if (size < 0) + return; +out: + sclp_hsa_size = size; +} + +static unsigned int __init sclp_con_check_linemode(struct init_sccb *sccb) +{ + if (!(sccb->sclp_send_mask & (EVTYP_OPCMD_MASK | EVTYP_PMSGCMD_MASK))) + return 0; + if (!(sccb->sclp_receive_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK))) + return 0; + return 1; +} + +static void __init sclp_console_detect(struct init_sccb *sccb) +{ + if (sccb->header.response_code != 0x20) + return; + + if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK) + sclp_con_has_vt220 = 1; + + if (sclp_con_check_linemode(sccb)) + sclp_con_has_linemode = 1; +} + +void __init sclp_early_detect(void) +{ + void *sccb = &sccb_early; + + sclp_facilities_detect(sccb); + sclp_hsa_size_detect(sccb); + + /* Turn off SCLP event notifications. Also save remote masks in the + * sccb. These are sufficient to detect sclp console capabilities. + */ + sclp_set_event_mask(sccb, 0, 0); + sclp_console_detect(sccb); +} diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c index b1032931a1c..561a0414b35 100644 --- a/drivers/s390/char/sclp_sdias.c +++ b/drivers/s390/char/sclp_sdias.c @@ -1,7 +1,7 @@ /* - * Sclp "store data in absolut storage" + * SCLP "store data in absolute storage" * - * Copyright IBM Corp. 2003, 2007 + * Copyright IBM Corp. 2003, 2013 * Author(s): Michael Holzheu */ @@ -14,6 +14,7 @@ #include <asm/debug.h> #include <asm/ipl.h> +#include "sclp_sdias.h" #include "sclp.h" #include "sclp_rw.h" @@ -22,46 +23,12 @@ #define SDIAS_RETRIES 300 #define SDIAS_SLEEP_TICKS 50 -#define EQ_STORE_DATA 0x0 -#define EQ_SIZE 0x1 -#define DI_FCP_DUMP 0x0 -#define ASA_SIZE_32 0x0 -#define ASA_SIZE_64 0x1 -#define EVSTATE_ALL_STORED 0x0 -#define EVSTATE_NO_DATA 0x3 -#define EVSTATE_PART_STORED 0x10 - static struct debug_info *sdias_dbf; static struct sclp_register sclp_sdias_register = { .send_mask = EVTYP_SDIAS_MASK, }; -struct sdias_evbuf { - struct evbuf_header hdr; - u8 event_qual; - u8 data_id; - u64 reserved2; - u32 event_id; - u16 reserved3; - u8 asa_size; - u8 event_status; - u32 reserved4; - u32 blk_cnt; - u64 asa; - u32 reserved5; - u32 fbn; - u32 reserved6; - u32 lbn; - u16 reserved7; - u16 dbs; -} __attribute__((packed)); - -struct sdias_sccb { - struct sccb_header hdr; - struct sdias_evbuf evbuf; -} __attribute__((packed)); - static struct sdias_sccb sccb __attribute__((aligned(4096))); static struct sdias_evbuf sdias_evbuf; @@ -148,8 +115,8 @@ int sclp_sdias_blk_count(void) sccb.hdr.length = sizeof(sccb); sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf); sccb.evbuf.hdr.type = EVTYP_SDIAS; - sccb.evbuf.event_qual = EQ_SIZE; - sccb.evbuf.data_id = DI_FCP_DUMP; + sccb.evbuf.event_qual = SDIAS_EQ_SIZE; + sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP; sccb.evbuf.event_id = 4712; sccb.evbuf.dbs = 1; @@ -208,13 +175,13 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks) sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf); sccb.evbuf.hdr.type = EVTYP_SDIAS; sccb.evbuf.hdr.flags = 0; - sccb.evbuf.event_qual = EQ_STORE_DATA; - sccb.evbuf.data_id = DI_FCP_DUMP; + sccb.evbuf.event_qual = SDIAS_EQ_STORE_DATA; + sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP; sccb.evbuf.event_id = 4712; #ifdef CONFIG_64BIT - sccb.evbuf.asa_size = ASA_SIZE_64; + sccb.evbuf.asa_size = SDIAS_ASA_SIZE_64; #else - sccb.evbuf.asa_size = ASA_SIZE_32; + sccb.evbuf.asa_size = SDIAS_ASA_SIZE_32; #endif sccb.evbuf.event_status = 0; sccb.evbuf.blk_cnt = nr_blks; @@ -240,20 +207,19 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks) } switch (sdias_evbuf.event_status) { - case EVSTATE_ALL_STORED: - TRACE("all stored\n"); - break; - case EVSTATE_PART_STORED: - TRACE("part stored: %i\n", sdias_evbuf.blk_cnt); - break; - case EVSTATE_NO_DATA: - TRACE("no data\n"); - /* fall through */ - default: - pr_err("Error from SCLP while copying hsa. " - "Event status = %x\n", - sdias_evbuf.event_status); - rc = -EIO; + case SDIAS_EVSTATE_ALL_STORED: + TRACE("all stored\n"); + break; + case SDIAS_EVSTATE_PART_STORED: + TRACE("part stored: %i\n", sdias_evbuf.blk_cnt); + break; + case SDIAS_EVSTATE_NO_DATA: + TRACE("no data\n"); + /* fall through */ + default: + pr_err("Error from SCLP while copying hsa. Event status = %x\n", + sdias_evbuf.event_status); + rc = -EIO; } out: mutex_unlock(&sdias_mutex); diff --git a/drivers/s390/char/sclp_sdias.h b/drivers/s390/char/sclp_sdias.h new file mode 100644 index 00000000000..f2431c41415 --- /dev/null +++ b/drivers/s390/char/sclp_sdias.h @@ -0,0 +1,46 @@ +/* + * SCLP "store data in absolute storage" + * + * Copyright IBM Corp. 2003, 2013 + */ + +#ifndef SCLP_SDIAS_H +#define SCLP_SDIAS_H + +#include "sclp.h" + +#define SDIAS_EQ_STORE_DATA 0x0 +#define SDIAS_EQ_SIZE 0x1 +#define SDIAS_DI_FCP_DUMP 0x0 +#define SDIAS_ASA_SIZE_32 0x0 +#define SDIAS_ASA_SIZE_64 0x1 +#define SDIAS_EVSTATE_ALL_STORED 0x0 +#define SDIAS_EVSTATE_NO_DATA 0x3 +#define SDIAS_EVSTATE_PART_STORED 0x10 + +struct sdias_evbuf { + struct evbuf_header hdr; + u8 event_qual; + u8 data_id; + u64 reserved2; + u32 event_id; + u16 reserved3; + u8 asa_size; + u8 event_status; + u32 reserved4; + u32 blk_cnt; + u64 asa; + u32 reserved5; + u32 fbn; + u32 reserved6; + u32 lbn; + u16 reserved7; + u16 dbs; +} __packed; + +struct sdias_sccb { + struct sccb_header hdr; + struct sdias_evbuf evbuf; +} __packed; + +#endif /* SCLP_SDIAS_H */ diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index 877fbc37c1e..7ed7a598781 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -65,7 +65,7 @@ sclp_tty_open(struct tty_struct *tty, struct file *filp) { tty_port_tty_set(&sclp_port, tty); tty->driver_data = NULL; - tty->low_latency = 0; + sclp_port.low_latency = 0; return 0; } @@ -107,7 +107,6 @@ sclp_tty_write_room (struct tty_struct *tty) static void sclp_ttybuf_callback(struct sclp_buffer *buffer, int rc) { - struct tty_struct *tty; unsigned long flags; void *page; @@ -125,12 +124,8 @@ sclp_ttybuf_callback(struct sclp_buffer *buffer, int rc) struct sclp_buffer, list); spin_unlock_irqrestore(&sclp_tty_lock, flags); } while (buffer && sclp_emit_buffer(buffer, sclp_ttybuf_callback)); - /* check if the tty needs a wake up call */ - tty = tty_port_tty_get(&sclp_port); - if (tty != NULL) { - tty_wakeup(tty); - tty_kref_put(tty); - } + + tty_port_tty_wakeup(&sclp_port); } static inline void @@ -342,8 +337,8 @@ sclp_tty_input(unsigned char* buf, unsigned int count) case CTRLCHAR_SYSRQ: break; case CTRLCHAR_CTRL: - tty_insert_flip_char(tty, cchar, TTY_NORMAL); - tty_flip_buffer_push(tty); + tty_insert_flip_char(&sclp_port, cchar, TTY_NORMAL); + tty_flip_buffer_push(&sclp_port); break; case CTRLCHAR_NONE: /* send (normal) input to line discipline */ @@ -351,11 +346,11 @@ sclp_tty_input(unsigned char* buf, unsigned int count) (strncmp((const char *) buf + count - 2, "^n", 2) && strncmp((const char *) buf + count - 2, "\252n", 2))) { /* add the auto \n */ - tty_insert_flip_string(tty, buf, count); - tty_insert_flip_char(tty, '\n', TTY_NORMAL); + tty_insert_flip_string(&sclp_port, buf, count); + tty_insert_flip_char(&sclp_port, '\n', TTY_NORMAL); } else - tty_insert_flip_string(tty, buf, count - 2); - tty_flip_buffer_push(tty); + tty_insert_flip_string(&sclp_port, buf, count - 2); + tty_flip_buffer_push(&sclp_port); break; } tty_kref_put(tty); diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index effcc8756e0..b9a9f721716 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -97,13 +97,16 @@ static void sclp_vt220_pm_event_fn(struct sclp_register *reg, static int __sclp_vt220_emit(struct sclp_vt220_request *request); static void sclp_vt220_emit_current(void); -/* Registration structure for our interest in SCLP event buffers */ +/* Registration structure for SCLP output event buffers */ static struct sclp_register sclp_vt220_register = { .send_mask = EVTYP_VT220MSG_MASK, + .pm_event_fn = sclp_vt220_pm_event_fn, +}; + +/* Registration structure for SCLP input event buffers */ +static struct sclp_register sclp_vt220_register_input = { .receive_mask = EVTYP_VT220MSG_MASK, - .state_change_fn = NULL, .receiver_fn = sclp_vt220_receiver_fn, - .pm_event_fn = sclp_vt220_pm_event_fn, }; @@ -114,7 +117,6 @@ static struct sclp_register sclp_vt220_register = { static void sclp_vt220_process_queue(struct sclp_vt220_request *request) { - struct tty_struct *tty; unsigned long flags; void *page; @@ -139,12 +141,7 @@ sclp_vt220_process_queue(struct sclp_vt220_request *request) } while (__sclp_vt220_emit(request)); if (request == NULL && sclp_vt220_flush_later) sclp_vt220_emit_current(); - /* Check if the tty needs a wake up call */ - tty = tty_port_tty_get(&sclp_vt220_port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&sclp_vt220_port); } #define SCLP_BUFFER_MAX_RETRY 1 @@ -368,6 +365,31 @@ sclp_vt220_timeout(unsigned long data) #define BUFFER_MAX_DELAY HZ/20 +/* + * Drop oldest console buffer if sclp_con_drop is set + */ +static int +sclp_vt220_drop_buffer(void) +{ + struct list_head *list; + struct sclp_vt220_request *request; + void *page; + + if (!sclp_console_drop) + return 0; + list = sclp_vt220_outqueue.next; + if (sclp_vt220_queue_running) + /* The first element is in I/O */ + list = list->next; + if (list == &sclp_vt220_outqueue) + return 0; + list_del(list); + request = list_entry(list, struct sclp_vt220_request, list); + page = request->sclp_req.sccb; + list_add_tail((struct list_head *) page, &sclp_vt220_empty); + return 1; +} + /* * Internal implementation of the write function. Write COUNT bytes of data * from memory at BUF @@ -396,12 +418,16 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, do { /* Create an sclp output buffer if none exists yet */ if (sclp_vt220_current_request == NULL) { + if (list_empty(&sclp_vt220_empty)) + sclp_console_full++; while (list_empty(&sclp_vt220_empty)) { - spin_unlock_irqrestore(&sclp_vt220_lock, flags); if (may_fail || sclp_vt220_suspended) goto out; - else - sclp_sync_wait(); + if (sclp_vt220_drop_buffer()) + break; + spin_unlock_irqrestore(&sclp_vt220_lock, flags); + + sclp_sync_wait(); spin_lock_irqsave(&sclp_vt220_lock, flags); } page = (void *) sclp_vt220_empty.next; @@ -434,8 +460,8 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, sclp_vt220_timer.expires = jiffies + BUFFER_MAX_DELAY; add_timer(&sclp_vt220_timer); } - spin_unlock_irqrestore(&sclp_vt220_lock, flags); out: + spin_unlock_irqrestore(&sclp_vt220_lock, flags); return overall_written; } @@ -461,14 +487,9 @@ sclp_vt220_write(struct tty_struct *tty, const unsigned char *buf, int count) static void sclp_vt220_receiver_fn(struct evbuf_header *evbuf) { - struct tty_struct *tty = tty_port_tty_get(&sclp_vt220_port); char *buffer; unsigned int count; - /* Ignore input if device is not open */ - if (tty == NULL) - return; - buffer = (char *) ((addr_t) evbuf + sizeof(struct evbuf_header)); count = evbuf->length - sizeof(struct evbuf_header); @@ -480,11 +501,10 @@ sclp_vt220_receiver_fn(struct evbuf_header *evbuf) /* Send input to line discipline */ buffer++; count--; - tty_insert_flip_string(tty, buffer, count); - tty_flip_buffer_push(tty); + tty_insert_flip_string(&sclp_vt220_port, buffer, count); + tty_flip_buffer_push(&sclp_vt220_port); break; } - tty_kref_put(tty); } /* @@ -495,7 +515,7 @@ sclp_vt220_open(struct tty_struct *tty, struct file *filp) { if (tty->count == 1) { tty_port_tty_set(&sclp_vt220_port, tty); - tty->low_latency = 0; + sclp_vt220_port.low_latency = 0; if (!tty->winsize.ws_row && !tty->winsize.ws_col) { tty->winsize.ws_row = 24; tty->winsize.ws_col = 80; @@ -698,9 +718,14 @@ static int __init sclp_vt220_tty_init(void) rc = tty_register_driver(driver); if (rc) goto out_init; + rc = sclp_register(&sclp_vt220_register_input); + if (rc) + goto out_reg; sclp_vt220_driver = driver; return 0; +out_reg: + tty_unregister_driver(driver); out_init: __sclp_vt220_cleanup(); out_driver: @@ -813,9 +838,7 @@ sclp_vt220_con_init(void) { int rc; - if (!CONSOLE_IS_SCLP) - return 0; - rc = __sclp_vt220_init(MAX_CONSOLE_PAGES); + rc = __sclp_vt220_init(sclp_console_pages); if (rc) return rc; /* Attach linux console */ diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c index 2d61db3fc62..6dc60725de9 100644 --- a/drivers/s390/char/tape_char.c +++ b/drivers/s390/char/tape_char.c @@ -273,13 +273,13 @@ tapechar_open (struct inode *inode, struct file *filp) int minor, rc; DBF_EVENT(6, "TCHAR:open: %i:%i\n", - imajor(filp->f_path.dentry->d_inode), - iminor(filp->f_path.dentry->d_inode)); + imajor(file_inode(filp)), + iminor(file_inode(filp))); - if (imajor(filp->f_path.dentry->d_inode) != tapechar_major) + if (imajor(file_inode(filp)) != tapechar_major) return -ENODEV; - minor = iminor(filp->f_path.dentry->d_inode); + minor = iminor(file_inode(filp)); device = tape_find_device(minor / TAPE_MINORS_PER_DEV); if (IS_ERR(device)) { DBF_EVENT(3, "TCHAR:open: tape_find_device() failed\n"); diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c index 54b3c79203f..91c3c642c76 100644 --- a/drivers/s390/char/tape_class.c +++ b/drivers/s390/char/tape_class.c @@ -77,7 +77,7 @@ struct tape_class_device *register_tape_dev( tcd->class_device = device_create(tape_class, device, tcd->char_device->dev, NULL, "%s", tcd->device_name); - rc = IS_ERR(tcd->class_device) ? PTR_ERR(tcd->class_device) : 0; + rc = PTR_RET(tcd->class_device); if (rc) goto fail_with_cdev; rc = sysfs_create_link( diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c index 981a99fd8d4..3478e19ae19 100644 --- a/drivers/s390/char/tape_std.c +++ b/drivers/s390/char/tape_std.c @@ -78,7 +78,8 @@ tape_std_assign(struct tape_device *device) rc = tape_do_io_interruptible(device, request); - del_timer(&timeout); + del_timer_sync(&timeout); + destroy_timer_on_stack(&timeout); if (rc != 0) { DBF_EVENT(3, "%08x: assign failed - device might be busy\n", diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c index 43ea0593bdb..e91b89dc6d1 100644 --- a/drivers/s390/char/tty3270.c +++ b/drivers/s390/char/tty3270.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/console.h> #include <linux/interrupt.h> +#include <linux/workqueue.h> #include <linux/slab.h> #include <linux/bootmem.h> @@ -80,6 +81,8 @@ struct tty3270 { unsigned int highlight; /* Blink/reverse/underscore */ unsigned int f_color; /* Foreground color */ struct tty3270_line *screen; + unsigned int n_model, n_cols, n_rows; /* New model & size */ + struct work_struct resize_work; /* Input stuff. */ struct string *prompt; /* Output string for input area. */ @@ -115,16 +118,14 @@ struct tty3270 { #define TTY_UPDATE_ALL 16 /* Recreate screen. */ static void tty3270_update(struct tty3270 *); +static void tty3270_resize_work(struct work_struct *work); /* * Setup timeout for a device. On timeout trigger an update. */ static void tty3270_set_timer(struct tty3270 *tp, int expires) { - if (expires == 0) - del_timer(&tp->timer); - else - mod_timer(&tp->timer, jiffies + expires); + mod_timer(&tp->timer, jiffies + expires); } /* @@ -683,12 +684,6 @@ tty3270_alloc_view(void) INIT_LIST_HEAD(&tp->update); INIT_LIST_HEAD(&tp->rcl_lines); tp->rcl_max = 20; - tty_port_init(&tp->port); - setup_timer(&tp->timer, (void (*)(unsigned long)) tty3270_update, - (unsigned long) tp); - tasklet_init(&tp->readlet, - (void (*)(unsigned long)) tty3270_read_tasklet, - (unsigned long) tp->read); for (pages = 0; pages < TTY3270_STRING_PAGES; pages++) { tp->freemem_pages[pages] = (void *) @@ -710,6 +705,15 @@ tty3270_alloc_view(void) tp->kbd = kbd_alloc(); if (!tp->kbd) goto out_reset; + + tty_port_init(&tp->port); + setup_timer(&tp->timer, (void (*)(unsigned long)) tty3270_update, + (unsigned long) tp); + tasklet_init(&tp->readlet, + (void (*)(unsigned long)) tty3270_read_tasklet, + (unsigned long) tp->read); + INIT_WORK(&tp->resize_work, tty3270_resize_work); + return tp; out_reset: @@ -737,7 +741,6 @@ tty3270_free_view(struct tty3270 *tp) { int pages; - del_timer_sync(&tp->timer); kbd_free(tp->kbd); raw3270_request_free(tp->kreset); raw3270_request_free(tp->read); @@ -752,42 +755,96 @@ tty3270_free_view(struct tty3270 *tp) /* * Allocate tty3270 screen. */ -static int -tty3270_alloc_screen(struct tty3270 *tp) +static struct tty3270_line * +tty3270_alloc_screen(unsigned int rows, unsigned int cols) { + struct tty3270_line *screen; unsigned long size; int lines; - size = sizeof(struct tty3270_line) * (tp->view.rows - 2); - tp->screen = kzalloc(size, GFP_KERNEL); - if (!tp->screen) + size = sizeof(struct tty3270_line) * (rows - 2); + screen = kzalloc(size, GFP_KERNEL); + if (!screen) goto out_err; - for (lines = 0; lines < tp->view.rows - 2; lines++) { - size = sizeof(struct tty3270_cell) * tp->view.cols; - tp->screen[lines].cells = kzalloc(size, GFP_KERNEL); - if (!tp->screen[lines].cells) + for (lines = 0; lines < rows - 2; lines++) { + size = sizeof(struct tty3270_cell) * cols; + screen[lines].cells = kzalloc(size, GFP_KERNEL); + if (!screen[lines].cells) goto out_screen; } - return 0; + return screen; out_screen: while (lines--) - kfree(tp->screen[lines].cells); - kfree(tp->screen); + kfree(screen[lines].cells); + kfree(screen); out_err: - return -ENOMEM; + return ERR_PTR(-ENOMEM); } /* * Free tty3270 screen. */ static void -tty3270_free_screen(struct tty3270 *tp) +tty3270_free_screen(struct tty3270_line *screen, unsigned int rows) { int lines; - for (lines = 0; lines < tp->view.rows - 2; lines++) - kfree(tp->screen[lines].cells); - kfree(tp->screen); + for (lines = 0; lines < rows - 2; lines++) + kfree(screen[lines].cells); + kfree(screen); +} + +/* + * Resize tty3270 screen + */ +static void tty3270_resize_work(struct work_struct *work) +{ + struct tty3270 *tp = container_of(work, struct tty3270, resize_work); + struct tty3270_line *screen, *oscreen; + struct tty_struct *tty; + unsigned int orows; + struct winsize ws; + + screen = tty3270_alloc_screen(tp->n_rows, tp->n_cols); + if (IS_ERR(screen)) + return; + /* Switch to new output size */ + spin_lock_bh(&tp->view.lock); + oscreen = tp->screen; + orows = tp->view.rows; + tp->view.model = tp->n_model; + tp->view.rows = tp->n_rows; + tp->view.cols = tp->n_cols; + tp->screen = screen; + free_string(&tp->freemem, tp->prompt); + free_string(&tp->freemem, tp->status); + tty3270_create_prompt(tp); + tty3270_create_status(tp); + tp->nr_up = 0; + while (tp->nr_lines < tp->view.rows - 2) + tty3270_blank_line(tp); + tp->update_flags = TTY_UPDATE_ALL; + spin_unlock_bh(&tp->view.lock); + tty3270_free_screen(oscreen, orows); + tty3270_set_timer(tp, 1); + /* Informat tty layer about new size */ + tty = tty_port_tty_get(&tp->port); + if (!tty) + return; + ws.ws_row = tp->view.rows - 2; + ws.ws_col = tp->view.cols; + tty_do_resize(tty, &ws); +} + +static void +tty3270_resize(struct raw3270_view *view, int model, int rows, int cols) +{ + struct tty3270 *tp = container_of(view, struct tty3270, view); + + tp->n_model = model; + tp->n_rows = rows; + tp->n_cols = cols; + schedule_work(&tp->resize_work); } /* @@ -815,7 +872,9 @@ static void tty3270_free(struct raw3270_view *view) { struct tty3270 *tp = container_of(view, struct tty3270, view); - tty3270_free_screen(tp); + + del_timer_sync(&tp->timer); + tty3270_free_screen(tp->screen, tp->view.rows); tty3270_free_view(tp); } @@ -827,9 +886,8 @@ tty3270_del_views(void) { int i; - for (i = 0; i < tty3270_max_index; i++) { - struct raw3270_view *view = - raw3270_find_view(&tty3270_fn, i + RAW3270_FIRSTMINOR); + for (i = RAW3270_FIRSTMINOR; i <= tty3270_max_index; i++) { + struct raw3270_view *view = raw3270_find_view(&tty3270_fn, i); if (!IS_ERR(view)) raw3270_del_view(view); } @@ -840,7 +898,8 @@ static struct raw3270_fn tty3270_fn = { .deactivate = tty3270_deactivate, .intv = (void *) tty3270_irq, .release = tty3270_release, - .free = tty3270_free + .free = tty3270_free, + .resize = tty3270_resize }; /* @@ -853,14 +912,13 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) int i, rc; /* Check if the tty3270 is already there. */ - view = raw3270_find_view(&tty3270_fn, - tty->index + RAW3270_FIRSTMINOR); + view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR); if (!IS_ERR(view)) { tp = container_of(view, struct tty3270, view); tty->driver_data = tp; tty->winsize.ws_row = tp->view.rows - 2; tty->winsize.ws_col = tp->view.cols; - tty->low_latency = 0; + tp->port.low_latency = 0; /* why to reassign? */ tty_port_tty_set(&tp->port, tty); tp->inattr = TF_INPUT; @@ -869,10 +927,6 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) if (tty3270_max_index < tty->index + 1) tty3270_max_index = tty->index + 1; - /* Quick exit if there is no device for tty->index. */ - if (PTR_ERR(view) == -ENODEV) - return -ENODEV; - /* Allocate tty3270 structure on first open. */ tp = tty3270_alloc_view(); if (IS_ERR(tp)) @@ -885,15 +939,17 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) return rc; } - rc = tty3270_alloc_screen(tp); - if (rc) { + tp->screen = tty3270_alloc_screen(tp->view.rows, tp->view.cols); + if (IS_ERR(tp->screen)) { + rc = PTR_ERR(tp->screen); raw3270_put_view(&tp->view); raw3270_del_view(&tp->view); + tty3270_free_view(tp); return rc; } tty_port_tty_set(&tp->port, tty); - tty->low_latency = 0; + tp->port.low_latency = 0; tty->winsize.ws_row = tp->view.rows - 2; tty->winsize.ws_col = tp->view.cols; @@ -926,6 +982,20 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) } /* + * This routine is called whenever a 3270 tty is opened. + */ +static int +tty3270_open(struct tty_struct *tty, struct file *filp) +{ + struct tty3270 *tp = tty->driver_data; + struct tty_port *port = &tp->port; + + port->count++; + tty_port_tty_set(port, tty); + return 0; +} + +/* * This routine is called when the 3270 tty is closed. We wait * for the remaining request to be completed. Then we clean up. */ @@ -1753,6 +1823,7 @@ static long tty3270_compat_ioctl(struct tty_struct *tty, static const struct tty_operations tty3270_ops = { .install = tty3270_install, .cleanup = tty3270_cleanup, + .open = tty3270_open, .close = tty3270_close, .write = tty3270_write, .put_char = tty3270_put_char, @@ -1771,6 +1842,22 @@ static const struct tty_operations tty3270_ops = { .set_termios = tty3270_set_termios }; +static void tty3270_create_cb(int minor) +{ + tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL); +} + +static void tty3270_destroy_cb(int minor) +{ + tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR); +} + +static struct raw3270_notifier tty3270_notifier = +{ + .create = tty3270_create_cb, + .destroy = tty3270_destroy_cb, +}; + /* * 3270 tty registration code called from tty_init(). * Most kernel services (incl. kmalloc) are available at this poimt. @@ -1780,23 +1867,26 @@ static int __init tty3270_init(void) struct tty_driver *driver; int ret; - driver = alloc_tty_driver(RAW3270_MAXDEVS); - if (!driver) - return -ENOMEM; + driver = tty_alloc_driver(RAW3270_MAXDEVS, + TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV | + TTY_DRIVER_RESET_TERMIOS); + if (IS_ERR(driver)) + return PTR_ERR(driver); /* * Initialize the tty_driver structure * Entries in tty3270_driver that are NOT initialized: * proc_entry, set_termios, flush_buffer, set_ldisc, write_proc */ - driver->driver_name = "ttyTUB"; - driver->name = "ttyTUB"; + driver->driver_name = "tty3270"; + driver->name = "3270/tty"; driver->major = IBM_TTY3270_MAJOR; driver->minor_start = RAW3270_FIRSTMINOR; + driver->name_base = RAW3270_FIRSTMINOR; driver->type = TTY_DRIVER_TYPE_SYSTEM; driver->subtype = SYSTEM_TYPE_TTY; driver->init_termios = tty_std_termios; - driver->flags = TTY_DRIVER_RESET_TERMIOS; tty_set_operations(driver, &tty3270_ops); ret = tty_register_driver(driver); if (ret) { @@ -1804,6 +1894,7 @@ static int __init tty3270_init(void) return ret; } tty3270_driver = driver; + raw3270_register_notifier(&tty3270_notifier); return 0; } @@ -1812,6 +1903,7 @@ tty3270_exit(void) { struct tty_driver *driver; + raw3270_unregister_notifier(&tty3270_notifier); driver = tty3270_driver; tty3270_driver = NULL; tty_unregister_driver(driver); diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c index 9b3a24e8d3a..a8848db7b09 100644 --- a/drivers/s390/char/vmlogrdr.c +++ b/drivers/s390/char/vmlogrdr.c @@ -313,7 +313,7 @@ static int vmlogrdr_open (struct inode *inode, struct file *filp) int ret; dev_num = iminor(inode); - if (dev_num > MAXMINOR) + if (dev_num >= MAXMINOR) return -ENODEV; logptr = &sys_ser[dev_num]; @@ -761,7 +761,7 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) dev = kzalloc(sizeof(struct device), GFP_KERNEL); if (dev) { - dev_set_name(dev, priv->internal_name); + dev_set_name(dev, "%s", priv->internal_name); dev->bus = &iucv_bus; dev->parent = iucv_root; dev->driver = &vmlogrdr_driver; diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c index 483f72ba030..0efb27f6f19 100644 --- a/drivers/s390/char/vmur.c +++ b/drivers/s390/char/vmur.c @@ -89,7 +89,7 @@ static DEFINE_MUTEX(vmur_mutex); * urd references: * - ur_probe gets a urd reference, ur_remove drops the reference * dev_get_drvdata(&cdev->dev) - * - ur_open gets a urd reference, ur_relase drops the reference + * - ur_open gets a urd reference, ur_release drops the reference * (urf->urd) * * cdev references: @@ -703,7 +703,7 @@ static int ur_open(struct inode *inode, struct file *file) * We treat the minor number as the devno of the ur device * to find in the driver tree. */ - devno = MINOR(file->f_dentry->d_inode->i_rdev); + devno = MINOR(file_inode(file)->i_rdev); urd = urdev_get_from_devno(devno); if (!urd) { @@ -922,8 +922,8 @@ static int ur_set_online(struct ccw_device *cdev) goto fail_free_cdev; } - urd->device = device_create(vmur_class, NULL, urd->char_device->dev, - NULL, "%s", node_id); + urd->device = device_create(vmur_class, &cdev->dev, + urd->char_device->dev, NULL, "%s", node_id); if (IS_ERR(urd->device)) { rc = PTR_ERR(urd->device); TRACE("ur_set_online: device_create rc=%d\n", rc); diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c deleted file mode 100644 index e9b72311e25..00000000000 --- a/drivers/s390/char/vmwatchdog.c +++ /dev/null @@ -1,337 +0,0 @@ -/* - * Watchdog implementation based on z/VM Watchdog Timer API - * - * Copyright IBM Corp. 2004, 2009 - * - * The user space watchdog daemon can use this driver as - * /dev/vmwatchdog to have z/VM execute the specified CP - * command when the timeout expires. The default command is - * "IPL", which which cause an immediate reboot. - */ -#define KMSG_COMPONENT "vmwatchdog" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt - -#include <linux/init.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/miscdevice.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/slab.h> -#include <linux/suspend.h> -#include <linux/watchdog.h> - -#include <asm/ebcdic.h> -#include <asm/io.h> -#include <asm/uaccess.h> - -#define MAX_CMDLEN 240 -#define MIN_INTERVAL 15 -static char vmwdt_cmd[MAX_CMDLEN] = "IPL"; -static bool vmwdt_conceal; - -static bool vmwdt_nowayout = WATCHDOG_NOWAYOUT; - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); -MODULE_DESCRIPTION("z/VM Watchdog Timer"); -module_param_string(cmd, vmwdt_cmd, MAX_CMDLEN, 0644); -MODULE_PARM_DESC(cmd, "CP command that is run when the watchdog triggers"); -module_param_named(conceal, vmwdt_conceal, bool, 0644); -MODULE_PARM_DESC(conceal, "Enable the CONCEAL CP option while the watchdog " - " is active"); -module_param_named(nowayout, vmwdt_nowayout, bool, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started" - " (default=CONFIG_WATCHDOG_NOWAYOUT)"); -MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); - -static unsigned int vmwdt_interval = 60; -static unsigned long vmwdt_is_open; -static int vmwdt_expect_close; - -static DEFINE_MUTEX(vmwdt_mutex); - -#define VMWDT_OPEN 0 /* devnode is open or suspend in progress */ -#define VMWDT_RUNNING 1 /* The watchdog is armed */ - -enum vmwdt_func { - /* function codes */ - wdt_init = 0, - wdt_change = 1, - wdt_cancel = 2, - /* flags */ - wdt_conceal = 0x80000000, -}; - -static int __diag288(enum vmwdt_func func, unsigned int timeout, - char *cmd, size_t len) -{ - register unsigned long __func asm("2") = func; - register unsigned long __timeout asm("3") = timeout; - register unsigned long __cmdp asm("4") = virt_to_phys(cmd); - register unsigned long __cmdl asm("5") = len; - int err; - - err = -EINVAL; - asm volatile( - " diag %1,%3,0x288\n" - "0: la %0,0\n" - "1:\n" - EX_TABLE(0b,1b) - : "+d" (err) : "d"(__func), "d"(__timeout), - "d"(__cmdp), "d"(__cmdl) : "1", "cc"); - return err; -} - -static int vmwdt_keepalive(void) -{ - /* we allocate new memory every time to avoid having - * to track the state. static allocation is not an - * option since that might not be contiguous in real - * storage in case of a modular build */ - static char *ebc_cmd; - size_t len; - int ret; - unsigned int func; - - ebc_cmd = kmalloc(MAX_CMDLEN, GFP_KERNEL); - if (!ebc_cmd) - return -ENOMEM; - - len = strlcpy(ebc_cmd, vmwdt_cmd, MAX_CMDLEN); - ASCEBC(ebc_cmd, MAX_CMDLEN); - EBC_TOUPPER(ebc_cmd, MAX_CMDLEN); - - func = vmwdt_conceal ? (wdt_init | wdt_conceal) : wdt_init; - set_bit(VMWDT_RUNNING, &vmwdt_is_open); - ret = __diag288(func, vmwdt_interval, ebc_cmd, len); - WARN_ON(ret != 0); - kfree(ebc_cmd); - return ret; -} - -static int vmwdt_disable(void) -{ - int ret = __diag288(wdt_cancel, 0, "", 0); - WARN_ON(ret != 0); - clear_bit(VMWDT_RUNNING, &vmwdt_is_open); - return ret; -} - -static int __init vmwdt_probe(void) -{ - /* there is no real way to see if the watchdog is supported, - * so we try initializing it with a NOP command ("BEGIN") - * that won't cause any harm even if the following disable - * fails for some reason */ - static char __initdata ebc_begin[] = { - 194, 197, 199, 201, 213 - }; - if (__diag288(wdt_init, 15, ebc_begin, sizeof(ebc_begin)) != 0) - return -EINVAL; - return vmwdt_disable(); -} - -static int vmwdt_open(struct inode *i, struct file *f) -{ - int ret; - if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open)) - return -EBUSY; - ret = vmwdt_keepalive(); - if (ret) - clear_bit(VMWDT_OPEN, &vmwdt_is_open); - return ret ? ret : nonseekable_open(i, f); -} - -static int vmwdt_close(struct inode *i, struct file *f) -{ - if (vmwdt_expect_close == 42) - vmwdt_disable(); - vmwdt_expect_close = 0; - clear_bit(VMWDT_OPEN, &vmwdt_is_open); - return 0; -} - -static struct watchdog_info vmwdt_info = { - .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, - .firmware_version = 0, - .identity = "z/VM Watchdog Timer", -}; - -static int __vmwdt_ioctl(unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - case WDIOC_GETSUPPORT: - if (copy_to_user((void __user *)arg, &vmwdt_info, - sizeof(vmwdt_info))) - return -EFAULT; - return 0; - case WDIOC_GETSTATUS: - case WDIOC_GETBOOTSTATUS: - return put_user(0, (int __user *)arg); - case WDIOC_GETTEMP: - return -EINVAL; - case WDIOC_SETOPTIONS: - { - int options, ret; - if (get_user(options, (int __user *)arg)) - return -EFAULT; - ret = -EINVAL; - if (options & WDIOS_DISABLECARD) { - ret = vmwdt_disable(); - if (ret) - return ret; - } - if (options & WDIOS_ENABLECARD) { - ret = vmwdt_keepalive(); - } - return ret; - } - case WDIOC_GETTIMEOUT: - return put_user(vmwdt_interval, (int __user *)arg); - case WDIOC_SETTIMEOUT: - { - int interval; - if (get_user(interval, (int __user *)arg)) - return -EFAULT; - if (interval < MIN_INTERVAL) - return -EINVAL; - vmwdt_interval = interval; - } - return vmwdt_keepalive(); - case WDIOC_KEEPALIVE: - return vmwdt_keepalive(); - } - return -EINVAL; -} - -static long vmwdt_ioctl(struct file *f, unsigned int cmd, unsigned long arg) -{ - int rc; - - mutex_lock(&vmwdt_mutex); - rc = __vmwdt_ioctl(cmd, arg); - mutex_unlock(&vmwdt_mutex); - return (long) rc; -} - -static ssize_t vmwdt_write(struct file *f, const char __user *buf, - size_t count, loff_t *ppos) -{ - if(count) { - if (!vmwdt_nowayout) { - size_t i; - - /* note: just in case someone wrote the magic character - * five months ago... */ - vmwdt_expect_close = 0; - - for (i = 0; i != count; i++) { - char c; - if (get_user(c, buf+i)) - return -EFAULT; - if (c == 'V') - vmwdt_expect_close = 42; - } - } - /* someone wrote to us, we should restart timer */ - vmwdt_keepalive(); - } - return count; -} - -static int vmwdt_resume(void) -{ - clear_bit(VMWDT_OPEN, &vmwdt_is_open); - return NOTIFY_DONE; -} - -/* - * It makes no sense to go into suspend while the watchdog is running. - * Depending on the memory size, the watchdog might trigger, while we - * are still saving the memory. - * We reuse the open flag to ensure that suspend and watchdog open are - * exclusive operations - */ -static int vmwdt_suspend(void) -{ - if (test_and_set_bit(VMWDT_OPEN, &vmwdt_is_open)) { - pr_err("The system cannot be suspended while the watchdog" - " is in use\n"); - return notifier_from_errno(-EBUSY); - } - if (test_bit(VMWDT_RUNNING, &vmwdt_is_open)) { - clear_bit(VMWDT_OPEN, &vmwdt_is_open); - pr_err("The system cannot be suspended while the watchdog" - " is running\n"); - return notifier_from_errno(-EBUSY); - } - return NOTIFY_DONE; -} - -/* - * This function is called for suspend and resume. - */ -static int vmwdt_power_event(struct notifier_block *this, unsigned long event, - void *ptr) -{ - switch (event) { - case PM_POST_HIBERNATION: - case PM_POST_SUSPEND: - return vmwdt_resume(); - case PM_HIBERNATION_PREPARE: - case PM_SUSPEND_PREPARE: - return vmwdt_suspend(); - default: - return NOTIFY_DONE; - } -} - -static struct notifier_block vmwdt_power_notifier = { - .notifier_call = vmwdt_power_event, -}; - -static const struct file_operations vmwdt_fops = { - .open = &vmwdt_open, - .release = &vmwdt_close, - .unlocked_ioctl = &vmwdt_ioctl, - .write = &vmwdt_write, - .owner = THIS_MODULE, - .llseek = noop_llseek, -}; - -static struct miscdevice vmwdt_dev = { - .minor = WATCHDOG_MINOR, - .name = "watchdog", - .fops = &vmwdt_fops, -}; - -static int __init vmwdt_init(void) -{ - int ret; - - ret = vmwdt_probe(); - if (ret) - return ret; - ret = register_pm_notifier(&vmwdt_power_notifier); - if (ret) - return ret; - /* - * misc_register() has to be the last action in module_init(), because - * file operations will be available right after this. - */ - ret = misc_register(&vmwdt_dev); - if (ret) { - unregister_pm_notifier(&vmwdt_power_notifier); - return ret; - } - return 0; -} -module_init(vmwdt_init); - -static void __exit vmwdt_exit(void) -{ - unregister_pm_notifier(&vmwdt_power_notifier); - misc_deregister(&vmwdt_dev); -} -module_exit(vmwdt_exit); diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index e3b9308b0fe..1884653e447 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -17,6 +17,8 @@ #include <linux/miscdevice.h> #include <linux/debugfs.h> #include <linux/module.h> +#include <linux/memblock.h> + #include <asm/asm-offsets.h> #include <asm/ipl.h> #include <asm/sclp.h> @@ -30,8 +32,8 @@ #define TRACE(x...) debug_sprintf_event(zcore_dbf, 1, x) -#define TO_USER 0 -#define TO_KERNEL 1 +#define TO_USER 1 +#define TO_KERNEL 0 #define CHUNK_INFO_SIZE 34 /* 2 16-byte char, each followed by blank */ enum arch_id { @@ -62,6 +64,7 @@ static struct dentry *zcore_dir; static struct dentry *zcore_file; static struct dentry *zcore_memmap_file; static struct dentry *zcore_reipl_file; +static struct dentry *zcore_hsa_file; static struct ipl_parameter_block *ipl_block; /* @@ -72,11 +75,13 @@ static struct ipl_parameter_block *ipl_block; * @count: Size of buffer, which should be copied * @mode: Either TO_KERNEL or TO_USER */ -static int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode) +int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode) { int offs, blk_num; static char buf[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); + if (!hsa_available) + return -ENODATA; if (count == 0) return 0; @@ -124,7 +129,7 @@ static int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode) } if (mode == TO_USER) { if (copy_to_user((__force __user void*) dest + offs, buf, - PAGE_SIZE)) + count - offs)) return -EFAULT; } else memcpy(dest + offs, buf, count - offs); @@ -148,7 +153,7 @@ static int __init init_cpu_info(enum arch_id arch) /* get info for boot cpu from lowcore, stored in the HSA */ - sa = kmalloc(sizeof(*sa), GFP_KERNEL); + sa = dump_save_area_create(0); if (!sa) return -ENOMEM; if (memcpy_hsa_kernel(sa, sys_info.sa_base, sys_info.sa_size) < 0) { @@ -156,7 +161,6 @@ static int __init init_cpu_info(enum arch_id arch) kfree(sa); return -EIO; } - zfcpdump_save_areas[0] = sa; return 0; } @@ -243,24 +247,25 @@ static int copy_lc(void __user *buf, void *sa, int sa_off, int len) static int zcore_add_lc(char __user *buf, unsigned long start, size_t count) { unsigned long end; - int i = 0; + int i; if (count == 0) return 0; end = start + count; - while (zfcpdump_save_areas[i]) { + for (i = 0; i < dump_save_areas.count; i++) { unsigned long cp_start, cp_end; /* copy range */ unsigned long sa_start, sa_end; /* save area range */ unsigned long prefix; unsigned long sa_off, len, buf_off; + struct save_area *save_area = dump_save_areas.areas[i]; - prefix = zfcpdump_save_areas[i]->pref_reg; + prefix = save_area->pref_reg; sa_start = prefix + sys_info.sa_base; sa_end = prefix + sys_info.sa_base + sys_info.sa_size; if ((end < sa_start) || (start > sa_end)) - goto next; + continue; cp_start = max(start, sa_start); cp_end = min(end, sa_end); @@ -269,15 +274,22 @@ static int zcore_add_lc(char __user *buf, unsigned long start, size_t count) len = cp_end - cp_start; TRACE("copy_lc for: %lx\n", start); - if (copy_lc(buf + buf_off, zfcpdump_save_areas[i], sa_off, len)) + if (copy_lc(buf + buf_off, save_area, sa_off, len)) return -EFAULT; -next: - i++; } return 0; } /* + * Release the HSA + */ +static void release_hsa(void) +{ + diag308(DIAG308_REL_HSA, NULL); + hsa_available = 0; +} + +/* * Read routine for zcore character device * First 4K are dump header * Next 32MB are HSA Memory @@ -318,9 +330,9 @@ static ssize_t zcore_read(struct file *file, char __user *buf, size_t count, mem_offs = 0; /* Copy from HSA data */ - if (*ppos < (ZFCPDUMP_HSA_SIZE + HEADER_SIZE)) { - size = min((count - hdr_count), (size_t) (ZFCPDUMP_HSA_SIZE - - mem_start)); + if (*ppos < sclp_get_hsa_size() + HEADER_SIZE) { + size = min((count - hdr_count), + (size_t) (sclp_get_hsa_size() - mem_start)); rc = memcpy_hsa_user(buf + hdr_count, mem_start, size); if (rc) goto fail; @@ -363,8 +375,8 @@ static int zcore_open(struct inode *inode, struct file *filp) static int zcore_release(struct inode *inode, struct file *filep) { - diag308(DIAG308_REL_HSA, NULL); - hsa_available = 0; + if (hsa_available) + release_hsa(); return 0; } @@ -401,33 +413,24 @@ static ssize_t zcore_memmap_read(struct file *filp, char __user *buf, size_t count, loff_t *ppos) { return simple_read_from_buffer(buf, count, ppos, filp->private_data, - MEMORY_CHUNKS * CHUNK_INFO_SIZE); + memblock.memory.cnt * CHUNK_INFO_SIZE); } static int zcore_memmap_open(struct inode *inode, struct file *filp) { - int i; + struct memblock_region *reg; char *buf; - struct mem_chunk *chunk_array; + int i = 0; - chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk), - GFP_KERNEL); - if (!chunk_array) - return -ENOMEM; - detect_memory_layout(chunk_array); - buf = kzalloc(MEMORY_CHUNKS * CHUNK_INFO_SIZE, GFP_KERNEL); + buf = kzalloc(memblock.memory.cnt * CHUNK_INFO_SIZE, GFP_KERNEL); if (!buf) { - kfree(chunk_array); return -ENOMEM; } - for (i = 0; i < MEMORY_CHUNKS; i++) { - sprintf(buf + (i * CHUNK_INFO_SIZE), "%016llx %016llx ", - (unsigned long long) chunk_array[i].addr, - (unsigned long long) chunk_array[i].size); - if (chunk_array[i].size == 0) - break; + for_each_memblock(memory, reg) { + sprintf(buf + (i++ * CHUNK_INFO_SIZE), "%016llx %016llx ", + (unsigned long long) reg->base, + (unsigned long long) reg->size); } - kfree(chunk_array); filp->private_data = buf; return nonseekable_open(inode, filp); } @@ -474,6 +477,41 @@ static const struct file_operations zcore_reipl_fops = { .llseek = no_llseek, }; +static ssize_t zcore_hsa_read(struct file *filp, char __user *buf, + size_t count, loff_t *ppos) +{ + static char str[18]; + + if (hsa_available) + snprintf(str, sizeof(str), "%lx\n", sclp_get_hsa_size()); + else + snprintf(str, sizeof(str), "0\n"); + return simple_read_from_buffer(buf, count, ppos, str, strlen(str)); +} + +static ssize_t zcore_hsa_write(struct file *filp, const char __user *buf, + size_t count, loff_t *ppos) +{ + char value; + + if (*ppos != 0) + return -EPIPE; + if (copy_from_user(&value, buf, 1)) + return -EFAULT; + if (value != '0') + return -EINVAL; + release_hsa(); + return count; +} + +static const struct file_operations zcore_hsa_fops = { + .owner = THIS_MODULE, + .write = zcore_hsa_write, + .read = zcore_hsa_read, + .open = nonseekable_open, + .llseek = no_llseek, +}; + #ifdef CONFIG_32BIT static void __init set_lc_mask(struct save_area *map) @@ -510,7 +548,7 @@ static void __init set_lc_mask(struct save_area *map) /* * Initialize dump globals for a given architecture */ -static int __init sys_info_init(enum arch_id arch) +static int __init sys_info_init(enum arch_id arch, unsigned long mem_end) { int rc; @@ -532,75 +570,55 @@ static int __init sys_info_init(enum arch_id arch) rc = init_cpu_info(arch); if (rc) return rc; - sys_info.mem_size = real_memory_size; + sys_info.mem_size = mem_end; return 0; } static int __init check_sdias(void) { - int rc, act_hsa_size; - - rc = sclp_sdias_blk_count(); - if (rc < 0) { + if (!sclp_get_hsa_size()) { TRACE("Could not determine HSA size\n"); - return rc; - } - act_hsa_size = (rc - 1) * PAGE_SIZE; - if (act_hsa_size < ZFCPDUMP_HSA_SIZE) { - TRACE("HSA size too small: %i\n", act_hsa_size); - return -EINVAL; + return -ENODEV; } return 0; } -static int __init get_mem_size(unsigned long *mem) +static int __init get_mem_info(unsigned long *mem, unsigned long *end) { - int i; - struct mem_chunk *chunk_array; + struct memblock_region *reg; - chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk), - GFP_KERNEL); - if (!chunk_array) - return -ENOMEM; - detect_memory_layout(chunk_array); - for (i = 0; i < MEMORY_CHUNKS; i++) { - if (chunk_array[i].size == 0) - break; - *mem += chunk_array[i].size; + for_each_memblock(memory, reg) { + *mem += reg->size; + *end = max_t(unsigned long, *end, reg->base + reg->size); } - kfree(chunk_array); return 0; } -static int __init zcore_header_init(int arch, struct zcore_header *hdr) +static void __init zcore_header_init(int arch, struct zcore_header *hdr, + unsigned long mem_size) { - int rc, i; - unsigned long memory = 0; u32 prefix; + int i; if (arch == ARCH_S390X) hdr->arch_id = DUMP_ARCH_S390X; else hdr->arch_id = DUMP_ARCH_S390; - rc = get_mem_size(&memory); - if (rc) - return rc; - hdr->mem_size = memory; - hdr->rmem_size = memory; + hdr->mem_size = mem_size; + hdr->rmem_size = mem_size; hdr->mem_end = sys_info.mem_size; - hdr->num_pages = memory / PAGE_SIZE; - hdr->tod = get_clock(); + hdr->num_pages = mem_size / PAGE_SIZE; + hdr->tod = get_tod_clock(); get_cpu_id(&hdr->cpu_id); - for (i = 0; zfcpdump_save_areas[i]; i++) { - prefix = zfcpdump_save_areas[i]->pref_reg; + for (i = 0; i < dump_save_areas.count; i++) { + prefix = dump_save_areas.areas[i]->pref_reg; hdr->real_cpu_cnt++; if (!prefix) continue; hdr->lc_vec[hdr->cpu_cnt] = prefix; hdr->cpu_cnt++; } - return 0; } /* @@ -620,7 +638,7 @@ static int __init zcore_reipl_init(void) ipl_block = (void *) __get_free_page(GFP_KERNEL); if (!ipl_block) return -ENOMEM; - if (ipib_info.ipib < ZFCPDUMP_HSA_SIZE) + if (ipib_info.ipib < sclp_get_hsa_size()) rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE); else rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE); @@ -635,9 +653,11 @@ static int __init zcore_reipl_init(void) static int __init zcore_init(void) { + unsigned long mem_size, mem_end; unsigned char arch; int rc; + mem_size = mem_end = 0; if (ipl_info.type != IPL_TYPE_FCP_DUMP) return -ENODATA; if (OLDMEM_BASE) @@ -658,6 +678,7 @@ static int __init zcore_init(void) rc = check_sdias(); if (rc) goto fail; + hsa_available = 1; rc = memcpy_hsa_kernel(&arch, __LC_AR_MODE_ID, 1); if (rc) @@ -679,13 +700,14 @@ static int __init zcore_init(void) } #endif /* CONFIG_64BIT */ - rc = sys_info_init(arch); + rc = get_mem_info(&mem_size, &mem_end); if (rc) goto fail; - rc = zcore_header_init(arch, &zcore_header); + rc = sys_info_init(arch, mem_end); if (rc) goto fail; + zcore_header_init(arch, &zcore_header, mem_size); rc = zcore_reipl_init(); if (rc) @@ -714,9 +736,16 @@ static int __init zcore_init(void) rc = -ENOMEM; goto fail_memmap_file; } - hsa_available = 1; + zcore_hsa_file = debugfs_create_file("hsa", S_IRUSR|S_IWUSR, zcore_dir, + NULL, &zcore_hsa_fops); + if (!zcore_hsa_file) { + rc = -ENOMEM; + goto fail_reipl_file; + } return 0; +fail_reipl_file: + debugfs_remove(zcore_reipl_file); fail_memmap_file: debugfs_remove(zcore_memmap_file); fail_file: @@ -733,6 +762,7 @@ static void __exit zcore_exit(void) debug_unregister(zcore_dbf); sclp_sdias_exit(); free_page((unsigned long) ipl_block); + debugfs_remove(zcore_hsa_file); debugfs_remove(zcore_reipl_file); debugfs_remove(zcore_memmap_file); debugfs_remove(zcore_file); |