diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-28 01:20:17 +0100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-28 01:20:17 +0100 |
commit | 7981164791d18d5ed1dcdfa9598949ed158a5333 (patch) | |
tree | 6565e7406dd55eb5014efd3e54109159a47cb10e /drivers/s390 | |
parent | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus (diff) | |
parent | [S390] time: remove unused code (diff) | |
download | linux-7981164791d18d5ed1dcdfa9598949ed158a5333.tar.xz linux-7981164791d18d5ed1dcdfa9598949ed158a5333.zip |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (35 commits)
[S390] time: remove unused code
[S390] zcore: Add prefix registers to dump header
[S390] correct vdso version string
[S390] add support for compressed kernels
[S390] Define new s390 ELF note sections in elf.h
[S390] codepage conversion of kernel parameter line
[S390] seq_file: convert drivers/s390/
[S390] add z9-ec/z10 instruction to kernel disassembler
[S390] dasd: correct offline processing
[S390] dasd: fix refcounting.
[S390] dasd: fix online/offline race
[S390] use kprobes_built_in() in mm/fault code
[S390] bug: use relative pointers in bug table entries
[S390] Cleanup struct _lowcore usage and defines.
[S390] free_initmem: reduce code duplication
[S390] Replace ENOTSUPP usage with EOPNOTSUPP
[S390] spinlock: check virtual cpu running status
[S390] sysinfo: fix SYSIB 3,2,2 structure
[S390] add MACHINE_IS_LPAR flag
[S390] qdio: optimize cache line usage of struct qdio_irq
...
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/block/dasd.c | 48 | ||||
-rw-r--r-- | drivers/s390/block/dasd_devmap.c | 13 | ||||
-rw-r--r-- | drivers/s390/block/dasd_genhd.c | 1 | ||||
-rw-r--r-- | drivers/s390/block/dasd_int.h | 1 | ||||
-rw-r--r-- | drivers/s390/block/dasd_proc.c | 109 | ||||
-rw-r--r-- | drivers/s390/char/zcore.c | 163 | ||||
-rw-r--r-- | drivers/s390/cio/ccwreq.c | 2 | ||||
-rw-r--r-- | drivers/s390/cio/chsc.c | 2 | ||||
-rw-r--r-- | drivers/s390/cio/chsc_sch.c | 4 | ||||
-rw-r--r-- | drivers/s390/cio/cio.c | 14 | ||||
-rw-r--r-- | drivers/s390/cio/crw.c | 29 | ||||
-rw-r--r-- | drivers/s390/cio/css.c | 79 | ||||
-rw-r--r-- | drivers/s390/cio/css.h | 5 | ||||
-rw-r--r-- | drivers/s390/cio/device.c | 160 | ||||
-rw-r--r-- | drivers/s390/cio/device.h | 3 | ||||
-rw-r--r-- | drivers/s390/cio/device_fsm.c | 43 | ||||
-rw-r--r-- | drivers/s390/cio/qdio.h | 92 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_debug.c | 23 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_main.c | 28 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_setup.c | 20 | ||||
-rw-r--r-- | drivers/s390/cio/qdio_thinint.c | 4 | ||||
-rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 158 | ||||
-rw-r--r-- | drivers/s390/kvm/kvm_virtio.c | 4 |
23 files changed, 562 insertions, 443 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 5905936c7c60..9ab1ae40565f 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -20,6 +20,7 @@ #include <linux/buffer_head.h> #include <linux/hdreg.h> #include <linux/async.h> +#include <linux/mutex.h> #include <asm/ccwdev.h> #include <asm/ebcdic.h> @@ -112,6 +113,7 @@ struct dasd_device *dasd_alloc_device(void) INIT_WORK(&device->restore_device, do_restore_device); device->state = DASD_STATE_NEW; device->target = DASD_STATE_NEW; + mutex_init(&device->state_mutex); return device; } @@ -321,8 +323,8 @@ static int dasd_state_ready_to_basic(struct dasd_device *device) device->state = DASD_STATE_READY; return rc; } - dasd_destroy_partitions(block); dasd_flush_request_queue(block); + dasd_destroy_partitions(block); block->blocks = 0; block->bp_block = 0; block->s2b_shift = 0; @@ -484,10 +486,8 @@ static void dasd_change_state(struct dasd_device *device) if (rc) device->target = device->state; - if (device->state == device->target) { + if (device->state == device->target) wake_up(&dasd_init_waitq); - dasd_put_device(device); - } /* let user-space know that the device status changed */ kobject_uevent(&device->cdev->dev.kobj, KOBJ_CHANGE); @@ -502,7 +502,9 @@ static void dasd_change_state(struct dasd_device *device) static void do_kick_device(struct work_struct *work) { struct dasd_device *device = container_of(work, struct dasd_device, kick_work); + mutex_lock(&device->state_mutex); dasd_change_state(device); + mutex_unlock(&device->state_mutex); dasd_schedule_device_bh(device); dasd_put_device(device); } @@ -539,18 +541,19 @@ void dasd_restore_device(struct dasd_device *device) void dasd_set_target_state(struct dasd_device *device, int target) { dasd_get_device(device); + mutex_lock(&device->state_mutex); /* If we are in probeonly mode stop at DASD_STATE_READY. */ if (dasd_probeonly && target > DASD_STATE_READY) target = DASD_STATE_READY; if (device->target != target) { - if (device->state == target) { + if (device->state == target) wake_up(&dasd_init_waitq); - dasd_put_device(device); - } device->target = target; } if (device->state != device->target) dasd_change_state(device); + mutex_unlock(&device->state_mutex); + dasd_put_device(device); } /* @@ -1000,12 +1003,20 @@ static void dasd_handle_killed_request(struct ccw_device *cdev, return; } - device = (struct dasd_device *) cqr->startdev; - if (device == NULL || - device != dasd_device_from_cdev_locked(cdev) || - strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) { + device = dasd_device_from_cdev_locked(cdev); + if (IS_ERR(device)) { + DBF_EVENT_DEVID(DBF_DEBUG, cdev, "%s", + "unable to get device from cdev"); + return; + } + + if (!cqr->startdev || + device != cqr->startdev || + strncmp(cqr->startdev->discipline->ebcname, + (char *) &cqr->magic, 4)) { DBF_EVENT_DEVID(DBF_DEBUG, cdev, "%s", "invalid device in request"); + dasd_put_device(device); return; } @@ -1692,7 +1703,6 @@ int dasd_cancel_req(struct dasd_ccw_req *cqr) cqr, rc); } else { cqr->stopclk = get_clock(); - rc = 1; } break; default: /* already finished or clear pending - do nothing */ @@ -2170,9 +2180,13 @@ static void dasd_flush_request_queue(struct dasd_block *block) static int dasd_open(struct block_device *bdev, fmode_t mode) { struct dasd_block *block = bdev->bd_disk->private_data; - struct dasd_device *base = block->base; + struct dasd_device *base; int rc; + if (!block) + return -ENODEV; + + base = block->base; atomic_inc(&block->open_count); if (test_bit(DASD_FLAG_OFFLINE, &base->flags)) { rc = -ENODEV; @@ -2285,11 +2299,6 @@ static void dasd_generic_auto_online(void *data, async_cookie_t cookie) if (ret) pr_warning("%s: Setting the DASD online failed with rc=%d\n", dev_name(&cdev->dev), ret); - else { - struct dasd_device *device = dasd_device_from_cdev(cdev); - wait_event(dasd_init_waitq, _wait_for_device(device)); - dasd_put_device(device); - } } /* @@ -2424,6 +2433,9 @@ int dasd_generic_set_online(struct ccw_device *cdev, } else pr_debug("dasd_generic device %s found\n", dev_name(&cdev->dev)); + + wait_event(dasd_init_waitq, _wait_for_device(device)); + dasd_put_device(device); return rc; } diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 4cac5b54f26a..d49766f3b940 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -874,12 +874,19 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr, ssize_t len; device = dasd_device_from_cdev(to_ccwdev(dev)); - if (!IS_ERR(device) && device->discipline) { + if (IS_ERR(device)) + goto out; + else if (!device->discipline) { + dasd_put_device(device); + goto out; + } else { len = snprintf(buf, PAGE_SIZE, "%s\n", device->discipline->name); dasd_put_device(device); - } else - len = snprintf(buf, PAGE_SIZE, "none\n"); + return len; + } +out: + len = snprintf(buf, PAGE_SIZE, "none\n"); return len; } diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c index d3198303b93c..94f92a1247f2 100644 --- a/drivers/s390/block/dasd_genhd.c +++ b/drivers/s390/block/dasd_genhd.c @@ -88,6 +88,7 @@ void dasd_gendisk_free(struct dasd_block *block) if (block->gdp) { del_gendisk(block->gdp); block->gdp->queue = NULL; + block->gdp->private_data = NULL; put_disk(block->gdp); block->gdp = NULL; } diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index e4c2143dabf6..ed73ce550822 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -368,6 +368,7 @@ struct dasd_device { /* Device state and target state. */ int state, target; + struct mutex state_mutex; int stopped; /* device (ccw_device_start) was stopped */ /* reference count. */ diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c index 71f95f54866f..f13a0bdd148c 100644 --- a/drivers/s390/block/dasd_proc.c +++ b/drivers/s390/block/dasd_proc.c @@ -165,51 +165,32 @@ static const struct file_operations dasd_devices_file_ops = { .release = seq_release, }; -static int -dasd_calc_metrics(char *page, char **start, off_t off, - int count, int *eof, int len) -{ - len = (len > off) ? len - off : 0; - if (len > count) - len = count; - if (len < count) - *eof = 1; - *start = page + off; - return len; -} - #ifdef CONFIG_DASD_PROFILE -static char * -dasd_statistics_array(char *str, unsigned int *array, int factor) +static void dasd_statistics_array(struct seq_file *m, unsigned int *array, int factor) { int i; for (i = 0; i < 32; i++) { - str += sprintf(str, "%7d ", array[i] / factor); + seq_printf(m, "%7d ", array[i] / factor); if (i == 15) - str += sprintf(str, "\n"); + seq_putc(m, '\n'); } - str += sprintf(str,"\n"); - return str; + seq_putc(m, '\n'); } #endif /* CONFIG_DASD_PROFILE */ -static int -dasd_statistics_read(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int dasd_stats_proc_show(struct seq_file *m, void *v) { - unsigned long len; #ifdef CONFIG_DASD_PROFILE struct dasd_profile_info_t *prof; - char *str; int factor; /* check for active profiling */ if (dasd_profile_level == DASD_PROFILE_OFF) { - len = sprintf(page, "Statistics are off - they might be " + seq_printf(m, "Statistics are off - they might be " "switched on using 'echo set on > " "/proc/dasd/statistics'\n"); - return dasd_calc_metrics(page, start, off, count, eof, len); + return 0; } prof = &dasd_global_profile; @@ -217,47 +198,49 @@ dasd_statistics_read(char *page, char **start, off_t off, for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999; factor *= 10); - str = page; - str += sprintf(str, "%d dasd I/O requests\n", prof->dasd_io_reqs); - str += sprintf(str, "with %u sectors(512B each)\n", + seq_printf(m, "%d dasd I/O requests\n", prof->dasd_io_reqs); + seq_printf(m, "with %u sectors(512B each)\n", prof->dasd_io_sects); - str += sprintf(str, "Scale Factor is %d\n", factor); - str += sprintf(str, + seq_printf(m, "Scale Factor is %d\n", factor); + seq_printf(m, " __<4 ___8 __16 __32 __64 _128 " " _256 _512 __1k __2k __4k __8k " " _16k _32k _64k 128k\n"); - str += sprintf(str, + seq_printf(m, " _256 _512 __1M __2M __4M __8M " " _16M _32M _64M 128M 256M 512M " " __1G __2G __4G " " _>4G\n"); - str += sprintf(str, "Histogram of sizes (512B secs)\n"); - str = dasd_statistics_array(str, prof->dasd_io_secs, factor); - str += sprintf(str, "Histogram of I/O times (microseconds)\n"); - str = dasd_statistics_array(str, prof->dasd_io_times, factor); - str += sprintf(str, "Histogram of I/O times per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_timps, factor); - str += sprintf(str, "Histogram of I/O time till ssch\n"); - str = dasd_statistics_array(str, prof->dasd_io_time1, factor); - str += sprintf(str, "Histogram of I/O time between ssch and irq\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2, factor); - str += sprintf(str, "Histogram of I/O time between ssch " + seq_printf(m, "Histogram of sizes (512B secs)\n"); + dasd_statistics_array(m, prof->dasd_io_secs, factor); + seq_printf(m, "Histogram of I/O times (microseconds)\n"); + dasd_statistics_array(m, prof->dasd_io_times, factor); + seq_printf(m, "Histogram of I/O times per sector\n"); + dasd_statistics_array(m, prof->dasd_io_timps, factor); + seq_printf(m, "Histogram of I/O time till ssch\n"); + dasd_statistics_array(m, prof->dasd_io_time1, factor); + seq_printf(m, "Histogram of I/O time between ssch and irq\n"); + dasd_statistics_array(m, prof->dasd_io_time2, factor); + seq_printf(m, "Histogram of I/O time between ssch " "and irq per sector\n"); - str = dasd_statistics_array(str, prof->dasd_io_time2ps, factor); - str += sprintf(str, "Histogram of I/O time between irq and end\n"); - str = dasd_statistics_array(str, prof->dasd_io_time3, factor); - str += sprintf(str, "# of req in chanq at enqueuing (1..32) \n"); - str = dasd_statistics_array(str, prof->dasd_io_nr_req, factor); - len = str - page; + dasd_statistics_array(m, prof->dasd_io_time2ps, factor); + seq_printf(m, "Histogram of I/O time between irq and end\n"); + dasd_statistics_array(m, prof->dasd_io_time3, factor); + seq_printf(m, "# of req in chanq at enqueuing (1..32) \n"); + dasd_statistics_array(m, prof->dasd_io_nr_req, factor); #else - len = sprintf(page, "Statistics are not activated in this kernel\n"); + seq_printf(m, "Statistics are not activated in this kernel\n"); #endif - return dasd_calc_metrics(page, start, off, count, eof, len); + return 0; } -static int -dasd_statistics_write(struct file *file, const char __user *user_buf, - unsigned long user_len, void *data) +static int dasd_stats_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, dasd_stats_proc_show, NULL); +} + +static ssize_t dasd_stats_proc_write(struct file *file, + const char __user *user_buf, size_t user_len, loff_t *pos) { #ifdef CONFIG_DASD_PROFILE char *buffer, *str; @@ -308,6 +291,15 @@ out_error: #endif /* CONFIG_DASD_PROFILE */ } +static const struct file_operations dasd_stats_proc_fops = { + .owner = THIS_MODULE, + .open = dasd_stats_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = dasd_stats_proc_write, +}; + /* * Create dasd proc-fs entries. * In case creation failed, cleanup and return -ENOENT. @@ -324,13 +316,12 @@ dasd_proc_init(void) &dasd_devices_file_ops); if (!dasd_devices_entry) goto out_nodevices; - dasd_statistics_entry = create_proc_entry("statistics", - S_IFREG | S_IRUGO | S_IWUSR, - dasd_proc_root_entry); + dasd_statistics_entry = proc_create("statistics", + S_IFREG | S_IRUGO | S_IWUSR, + dasd_proc_root_entry, + &dasd_stats_proc_fops); if (!dasd_statistics_entry) goto out_nostatistics; - dasd_statistics_entry->read_proc = dasd_statistics_read; - dasd_statistics_entry->write_proc = dasd_statistics_write; return 0; out_nostatistics: diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 82daa3c1dc9c..3438658b66b7 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/miscdevice.h> #include <linux/debugfs.h> +#include <asm/asm-offsets.h> #include <asm/ipl.h> #include <asm/sclp.h> #include <asm/setup.h> @@ -40,12 +41,12 @@ enum arch_id { /* dump system info */ struct sys_info { - enum arch_id arch; - unsigned long sa_base; - u32 sa_size; - int cpu_map[NR_CPUS]; - unsigned long mem_size; - union save_area lc_mask; + enum arch_id arch; + unsigned long sa_base; + u32 sa_size; + int cpu_map[NR_CPUS]; + unsigned long mem_size; + struct save_area lc_mask; }; struct ipib_info { @@ -183,52 +184,9 @@ static int memcpy_real_user(void __user *dest, unsigned long src, size_t count) return 0; } -#ifdef __s390x__ -/* - * Convert s390x (64 bit) cpu info to s390 (32 bit) cpu info - */ -static void __init s390x_to_s390_regs(union save_area *out, union save_area *in, - int cpu) -{ - int i; - - for (i = 0; i < 16; i++) { - out->s390.gp_regs[i] = in->s390x.gp_regs[i] & 0x00000000ffffffff; - out->s390.acc_regs[i] = in->s390x.acc_regs[i]; - out->s390.ctrl_regs[i] = - in->s390x.ctrl_regs[i] & 0x00000000ffffffff; - } - /* locore for 31 bit has only space for fpregs 0,2,4,6 */ - out->s390.fp_regs[0] = in->s390x.fp_regs[0]; - out->s390.fp_regs[1] = in->s390x.fp_regs[2]; - out->s390.fp_regs[2] = in->s390x.fp_regs[4]; - out->s390.fp_regs[3] = in->s390x.fp_regs[6]; - memcpy(&(out->s390.psw[0]), &(in->s390x.psw[0]), 4); - out->s390.psw[1] |= 0x8; /* set bit 12 */ - memcpy(&(out->s390.psw[4]),&(in->s390x.psw[12]), 4); - out->s390.psw[4] |= 0x80; /* set (31bit) addressing bit */ - out->s390.pref_reg = in->s390x.pref_reg; - out->s390.timer = in->s390x.timer; - out->s390.clk_cmp = in->s390x.clk_cmp; -} - -static void __init s390x_to_s390_save_areas(void) -{ - int i = 1; - static union save_area tmp; - - while (zfcpdump_save_areas[i]) { - s390x_to_s390_regs(&tmp, zfcpdump_save_areas[i], i); - memcpy(zfcpdump_save_areas[i], &tmp, sizeof(tmp)); - i++; - } -} - -#endif /* __s390x__ */ - static int __init init_cpu_info(enum arch_id arch) { - union save_area *sa; + struct save_area *sa; /* get info for boot cpu from lowcore, stored in the HSA */ @@ -241,20 +199,12 @@ static int __init init_cpu_info(enum arch_id arch) return -EIO; } zfcpdump_save_areas[0] = sa; - -#ifdef __s390x__ - /* convert s390x regs to s390, if we are dumping an s390 Linux */ - - if (arch == ARCH_S390) - s390x_to_s390_save_areas(); -#endif - return 0; } static DEFINE_MUTEX(zcore_mutex); -#define DUMP_VERSION 0x3 +#define DUMP_VERSION 0x5 #define DUMP_MAGIC 0xa8190173618f23fdULL #define DUMP_ARCH_S390X 2 #define DUMP_ARCH_S390 1 @@ -279,7 +229,14 @@ struct zcore_header { u32 volnr; u32 build_arch; u64 rmem_size; - char pad2[4016]; + u8 mvdump; + u16 cpu_cnt; + u16 real_cpu_cnt; + u8 end_pad1[0x200-0x061]; + u64 mvdump_sign; + u64 mvdump_zipl_time; + u8 end_pad2[0x800-0x210]; + u32 lc_vec[512]; } __attribute__((packed,__aligned__(16))); static struct zcore_header zcore_header = { @@ -289,7 +246,7 @@ static struct zcore_header zcore_header = { .dump_level = 0, .page_size = PAGE_SIZE, .mem_start = 0, -#ifdef __s390x__ +#ifdef CONFIG_64BIT .build_arch = DUMP_ARCH_S390X, #else .build_arch = DUMP_ARCH_S390, @@ -340,11 +297,7 @@ static int zcore_add_lc(char __user *buf, unsigned long start, size_t count) unsigned long prefix; unsigned long sa_off, len, buf_off; - if (sys_info.arch == ARCH_S390) - prefix = zfcpdump_save_areas[i]->s390.pref_reg; - else - prefix = zfcpdump_save_areas[i]->s390x.pref_reg; - + prefix = zfcpdump_save_areas[i]->pref_reg; sa_start = prefix + sys_info.sa_base; sa_end = prefix + sys_info.sa_base + sys_info.sa_size; @@ -561,34 +514,39 @@ static const struct file_operations zcore_reipl_fops = { .release = zcore_reipl_release, }; +#ifdef CONFIG_32BIT -static void __init set_s390_lc_mask(union save_area *map) +static void __init set_lc_mask(struct save_area *map) { - memset(&map->s390.ext_save, 0xff, sizeof(map->s390.ext_save)); - memset(&map->s390.timer, 0xff, sizeof(map->s390.timer)); - memset(&map->s390.clk_cmp, 0xff, sizeof(map->s390.clk_cmp)); - memset(&map->s390.psw, 0xff, sizeof(map->s390.psw)); - memset(&map->s390.pref_reg, 0xff, sizeof(map->s390.pref_reg)); - memset(&map->s390.acc_regs, 0xff, sizeof(map->s390.acc_regs)); - memset(&map->s390.fp_regs, 0xff, sizeof(map->s390.fp_regs)); - memset(&map->s390.gp_regs, 0xff, sizeof(map->s390.gp_regs)); - memset(&map->s390.ctrl_regs, 0xff, sizeof(map->s390.ctrl_regs)); + memset(&map->ext_save, 0xff, sizeof(map->ext_save)); + memset(&map->timer, 0xff, sizeof(map->timer)); + memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp)); + memset(&map->psw, 0xff, sizeof(map->psw)); + memset(&map->pref_reg, 0xff, sizeof(map->pref_reg)); + memset(&map->acc_regs, 0xff, sizeof(map->acc_regs)); + memset(&map->fp_regs, 0xff, sizeof(map->fp_regs)); + memset(&map->gp_regs, 0xff, sizeof(map->gp_regs)); + memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs)); } -static void __init set_s390x_lc_mask(union save_area *map) +#else /* CONFIG_32BIT */ + +static void __init set_lc_mask(struct save_area *map) { - memset(&map->s390x.fp_regs, 0xff, sizeof(map->s390x.fp_regs)); - memset(&map->s390x.gp_regs, 0xff, sizeof(map->s390x.gp_regs)); - memset(&map->s390x.psw, 0xff, sizeof(map->s390x.psw)); - memset(&map->s390x.pref_reg, 0xff, sizeof(map->s390x.pref_reg)); - memset(&map->s390x.fp_ctrl_reg, 0xff, sizeof(map->s390x.fp_ctrl_reg)); - memset(&map->s390x.tod_reg, 0xff, sizeof(map->s390x.tod_reg)); - memset(&map->s390x.timer, 0xff, sizeof(map->s390x.timer)); - memset(&map->s390x.clk_cmp, 0xff, sizeof(map->s390x.clk_cmp)); - memset(&map->s390x.acc_regs, 0xff, sizeof(map->s390x.acc_regs)); - memset(&map->s390x.ctrl_regs, 0xff, sizeof(map->s390x.ctrl_regs)); + memset(&map->fp_regs, 0xff, sizeof(map->fp_regs)); + memset(&map->gp_regs, 0xff, sizeof(map->gp_regs)); + memset(&map->psw, 0xff, sizeof(map->psw)); + memset(&map->pref_reg, 0xff, sizeof(map->pref_reg)); + memset(&map->fp_ctrl_reg, 0xff, sizeof(map->fp_ctrl_reg)); + memset(&map->tod_reg, 0xff, sizeof(map->tod_reg)); + memset(&map->timer, 0xff, sizeof(map->timer)); + memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp)); + memset(&map->acc_regs, 0xff, sizeof(map->acc_regs)); + memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs)); } +#endif /* CONFIG_32BIT */ + /* * Initialize dump globals for a given architecture */ @@ -599,21 +557,18 @@ static int __init sys_info_init(enum arch_id arch) switch (arch) { case ARCH_S390X: pr_alert("DETECTED 'S390X (64 bit) OS'\n"); - sys_info.sa_base = SAVE_AREA_BASE_S390X; - sys_info.sa_size = sizeof(struct save_area_s390x); - set_s390x_lc_mask(&sys_info.lc_mask); break; case ARCH_S390: pr_alert("DETECTED 'S390 (32 bit) OS'\n"); - sys_info.sa_base = SAVE_AREA_BASE_S390; - sys_info.sa_size = sizeof(struct save_area_s390); - set_s390_lc_mask(&sys_info.lc_mask); break; default: pr_alert("0x%x is an unknown architecture.\n",arch); return -EINVAL; } + sys_info.sa_base = SAVE_AREA_BASE; + sys_info.sa_size = sizeof(struct save_area); sys_info.arch = arch; + set_lc_mask(&sys_info.lc_mask); rc = init_cpu_info(arch); if (rc) return rc; @@ -660,8 +615,9 @@ static int __init get_mem_size(unsigned long *mem) static int __init zcore_header_init(int arch, struct zcore_header *hdr) { - int rc; + int rc, i; unsigned long memory = 0; + u32 prefix; if (arch == ARCH_S390X) hdr->arch_id = DUMP_ARCH_S390X; @@ -676,6 +632,14 @@ static int __init zcore_header_init(int arch, struct zcore_header *hdr) hdr->num_pages = memory / PAGE_SIZE; hdr->tod = get_clock(); get_cpu_id(&hdr->cpu_id); + for (i = 0; zfcpdump_save_areas[i]; i++) { + prefix = zfcpdump_save_areas[i]->pref_reg; + hdr->real_cpu_cnt++; + if (!prefix) + continue; + hdr->lc_vec[hdr->cpu_cnt] = prefix; + hdr->cpu_cnt++; + } return 0; } @@ -741,14 +705,21 @@ static int __init zcore_init(void) if (rc) goto fail; -#ifndef __s390x__ +#ifdef CONFIG_64BIT + if (arch == ARCH_S390) { + pr_alert("The 64-bit dump tool cannot be used for a " + "32-bit system\n"); + rc = -EINVAL; + goto fail; + } +#else /* CONFIG_64BIT */ if (arch == ARCH_S390X) { pr_alert("The 32-bit dump tool cannot be used for a " "64-bit system\n"); rc = -EINVAL; goto fail; } -#endif +#endif /* CONFIG_64BIT */ rc = sys_info_init(arch); if (rc) diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c index 7a28a3029a3f..37df42af05ec 100644 --- a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -224,8 +224,8 @@ static void ccwreq_log_status(struct ccw_device *cdev, enum io_status status) */ void ccw_request_handler(struct ccw_device *cdev) { + struct irb *irb = (struct irb *)&S390_lowcore.irb; struct ccw_request *req = &cdev->private->req; - struct irb *irb = (struct irb *) __LC_IRB; enum io_status status; int rc = -EOPNOTSUPP; diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 1ecd3e567648..4038f5b4f144 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -574,7 +574,7 @@ int __chsc_do_secm(struct channel_subsystem *css, int enable, void *page) secm_area->request.length = 0x0050; secm_area->request.code = 0x0016; - secm_area->key = PAGE_DEFAULT_KEY; + secm_area->key = PAGE_DEFAULT_KEY >> 4; secm_area->cub_addr1 = (u64)(unsigned long)css->cub_addr1; secm_area->cub_addr2 = (u64)(unsigned long)css->cub_addr2; diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index c84ac9443079..852612f5dba0 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -51,7 +51,7 @@ static void chsc_subchannel_irq(struct subchannel *sch) { struct chsc_private *private = sch->private; struct chsc_request *request = private->request; - struct irb *irb = (struct irb *)__LC_IRB; + struct irb *irb = (struct irb *)&S390_lowcore.irb; CHSC_LOG(4, "irb"); CHSC_LOG_HEX(4, irb, sizeof(*irb)); @@ -237,7 +237,7 @@ static int chsc_async(struct chsc_async_area *chsc_area, int ret = -ENODEV; char dbf[10]; - chsc_area->header.key = PAGE_DEFAULT_KEY; + chsc_area->header.key = PAGE_DEFAULT_KEY >> 4; while ((sch = chsc_get_next_subchannel(sch))) { spin_lock(sch->lock); private = sch->private; diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 126f240715a4..f736cdcf08ad 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -625,8 +625,8 @@ void __irq_entry do_IRQ(struct pt_regs *regs) /* * Get interrupt information from lowcore */ - tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; - irb = (struct irb *) __LC_IRB; + tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; + irb = (struct irb *)&S390_lowcore.irb; do { kstat_cpu(smp_processor_id()).irqs[IO_INTERRUPT]++; /* @@ -661,7 +661,7 @@ void __irq_entry do_IRQ(struct pt_regs *regs) * We don't do this for VM because a tpi drops the cpu * out of the sie which costs more cycles than it saves. */ - } while (!MACHINE_IS_VM && tpi (NULL) != 0); + } while (MACHINE_IS_LPAR && tpi(NULL) != 0); irq_exit(); set_irq_regs(old_regs); } @@ -682,10 +682,10 @@ static int cio_tpi(void) struct irb *irb; int irq_context; - tpi_info = (struct tpi_info *) __LC_SUBCHANNEL_ID; + tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; if (tpi(NULL) != 1) return 0; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; /* Store interrupt response block to lowcore. */ if (tsch(tpi_info->schid, irb) != 0) /* Not status pending or not operational. */ @@ -885,7 +885,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid) struct tpi_info ti; if (tpi(&ti)) { - tsch(ti.schid, (struct irb *)__LC_IRB); + tsch(ti.schid, (struct irb *)&S390_lowcore.irb); if (schid_equal(&ti.schid, &schid)) return 0; } @@ -1083,7 +1083,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo) struct subchannel_id schid; struct schib schib; - schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID; + schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id; if (!schid.one) return -ENODEV; if (stsch(schid, &schib)) diff --git a/drivers/s390/cio/crw.c b/drivers/s390/cio/crw.c index d157665d0e76..425f741a280c 100644 --- a/drivers/s390/cio/crw.c +++ b/drivers/s390/cio/crw.c @@ -8,15 +8,16 @@ * Heiko Carstens <heiko.carstens@de.ibm.com>, */ -#include <linux/semaphore.h> #include <linux/mutex.h> #include <linux/kthread.h> #include <linux/init.h> +#include <linux/wait.h> #include <asm/crw.h> -static struct semaphore crw_semaphore; static DEFINE_MUTEX(crw_handler_mutex); static crw_handler_t crw_handlers[NR_RSCS]; +static atomic_t crw_nr_req = ATOMIC_INIT(0); +static DECLARE_WAIT_QUEUE_HEAD(crw_handler_wait_q); /** * crw_register_handler() - register a channel report word handler @@ -59,12 +60,14 @@ void crw_unregister_handler(int rsc) static int crw_collect_info(void *unused) { struct crw crw[2]; - int ccode; + int ccode, signal; unsigned int chain; - int ignore; repeat: - ignore = down_interruptible(&crw_semaphore); + signal = wait_event_interruptible(crw_handler_wait_q, + atomic_read(&crw_nr_req) > 0); + if (unlikely(signal)) + atomic_inc(&crw_nr_req); chain = 0; while (1) { crw_handler_t handler; @@ -122,25 +125,23 @@ repeat: /* chain is always 0 or 1 here. */ chain = crw[chain].chn ? chain + 1 : 0; } + if (atomic_dec_and_test(&crw_nr_req)) + wake_up(&crw_handler_wait_q); goto repeat; return 0; } void crw_handle_channel_report(void) { - up(&crw_semaphore); + atomic_inc(&crw_nr_req); + wake_up(&crw_handler_wait_q); } -/* - * Separate initcall needed for semaphore initialization since - * crw_handle_channel_report might be called before crw_machine_check_init. - */ -static int __init crw_init_semaphore(void) +void crw_wait_for_channel_report(void) { - init_MUTEX_LOCKED(&crw_semaphore); - return 0; + crw_handle_channel_report(); + wait_event(crw_handler_wait_q, atomic_read(&crw_nr_req) == 0); } -pure_initcall(crw_init_semaphore); /* * Machine checks for the channel subsystem must be enabled diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 7679aee6fa14..2769da54f2b9 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -18,6 +18,7 @@ #include <linux/list.h> #include <linux/reboot.h> #include <linux/suspend.h> +#include <linux/proc_fs.h> #include <asm/isc.h> #include <asm/crw.h> @@ -232,7 +233,7 @@ void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo) if (!get_device(&sch->dev)) return; sch->todo = todo; - if (!queue_work(slow_path_wq, &sch->todo_work)) { + if (!queue_work(cio_work_q, &sch->todo_work)) { /* Already queued, release workqueue ref. */ put_device(&sch->dev); } @@ -543,7 +544,7 @@ static void css_slow_path_func(struct work_struct *unused) } static DECLARE_WORK(slow_path_work, css_slow_path_func); -struct workqueue_struct *slow_path_wq; +struct workqueue_struct *cio_work_q; void css_schedule_eval(struct subchannel_id schid) { @@ -552,7 +553,7 @@ void css_schedule_eval(struct subchannel_id schid) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_sch_add(slow_subchannel_set, schid); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -563,7 +564,7 @@ void css_schedule_eval_all(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_fill(slow_subchannel_set); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -594,14 +595,14 @@ void css_schedule_eval_all_unreg(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_add_set(slow_subchannel_set, unreg_set); atomic_set(&css_eval_scheduled, 1); - queue_work(slow_path_wq, &slow_path_work); + queue_work(cio_work_q, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); idset_free(unreg_set); } void css_wait_for_slow_path(void) { - flush_workqueue(slow_path_wq); + flush_workqueue(cio_work_q); } /* Schedule reprobing of all unregistered subchannels. */ @@ -992,12 +993,21 @@ static int __init channel_subsystem_init(void) ret = css_bus_init(); if (ret) return ret; - + cio_work_q = create_singlethread_workqueue("cio"); + if (!cio_work_q) { + ret = -ENOMEM; + goto out_bus; + } ret = io_subchannel_init(); if (ret) - css_bus_cleanup(); + goto out_wq; return ret; +out_wq: + destroy_workqueue(cio_work_q); +out_bus: + css_bus_cleanup(); + return ret; } subsys_initcall(channel_subsystem_init); @@ -1006,10 +1016,25 @@ static int css_settle(struct device_driver *drv, void *unused) struct css_driver *cssdrv = to_cssdriver(drv); if (cssdrv->settle) - cssdrv->settle(); + return cssdrv->settle(); return 0; } +int css_complete_work(void) +{ + int ret; + + /* Wait for the evaluation of subchannels to finish. */ + ret = wait_event_interruptible(css_eval_wq, + atomic_read(&css_eval_scheduled) == 0); + if (ret) + return -EINTR; + flush_workqueue(cio_work_q); + /* Wait for the subchannel type specific initialization to finish */ + return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); +} + + /* * Wait for the initialization of devices to finish, to make sure we are * done with our setup if the search for the root device starts. @@ -1018,13 +1043,41 @@ static int __init channel_subsystem_init_sync(void) { /* Start initial subchannel evaluation. */ css_schedule_eval_all(); - /* Wait for the evaluation of subchannels to finish. */ - wait_event(css_eval_wq, atomic_read(&css_eval_scheduled) == 0); - /* Wait for the subchannel type specific initialization to finish */ - return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); + css_complete_work(); + return 0; } subsys_initcall_sync(channel_subsystem_init_sync); +#ifdef CONFIG_PROC_FS +static ssize_t cio_settle_write(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + int ret; + + /* Handle pending CRW's. */ + crw_wait_for_channel_report(); + ret = css_complete_work(); + + return ret ? ret : count; +} + +static const struct file_operations cio_settle_proc_fops = { + .write = cio_settle_write, +}; + +static int __init cio_settle_init(void) +{ + struct proc_dir_entry *entry; + + entry = proc_create("cio_settle", S_IWUSR, NULL, + &cio_settle_proc_fops); + if (!entry) + return -ENOMEM; + return 0; +} +device_initcall(cio_settle_init); +#endif /*CONFIG_PROC_FS*/ + int sch_is_pseudo_sch(struct subchannel *sch) { return sch == to_css(sch->dev.parent)->pseudo_subchannel; diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index fe84b92cde60..7e37886de231 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -95,7 +95,7 @@ struct css_driver { int (*freeze)(struct subchannel *); int (*thaw) (struct subchannel *); int (*restore)(struct subchannel *); - void (*settle)(void); + int (*settle)(void); const char *name; }; @@ -146,12 +146,13 @@ extern struct channel_subsystem *channel_subsystems[]; /* Helper functions to build lists for the slow path. */ void css_schedule_eval(struct subchannel_id schid); void css_schedule_eval_all(void); +int css_complete_work(void); int sch_is_pseudo_sch(struct subchannel *); struct schib; int css_sch_is_valid(struct schib *); -extern struct workqueue_struct *slow_path_wq; +extern struct workqueue_struct *cio_work_q; void css_wait_for_slow_path(void); void css_sched_sch_todo(struct subchannel *sch, enum sch_todo todo); #endif diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index a6c7d5426fb2..c6abb75c4615 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -136,7 +136,6 @@ static int io_subchannel_sch_event(struct subchannel *, int); static int io_subchannel_chp_event(struct subchannel *, struct chp_link *, int); static void recovery_func(unsigned long data); -struct workqueue_struct *ccw_device_work; wait_queue_head_t ccw_device_init_wq; atomic_t ccw_device_init_count; @@ -159,11 +158,16 @@ static int io_subchannel_prepare(struct subchannel *sch) return 0; } -static void io_subchannel_settle(void) +static int io_subchannel_settle(void) { - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - flush_workqueue(ccw_device_work); + int ret; + + ret = wait_event_interruptible(ccw_device_init_wq, + atomic_read(&ccw_device_init_count) == 0); + if (ret) + return -EINTR; + flush_workqueue(cio_work_q); + return 0; } static struct css_driver io_subchannel_driver = { @@ -188,27 +192,13 @@ int __init io_subchannel_init(void) atomic_set(&ccw_device_init_count, 0); setup_timer(&recovery_timer, recovery_func, 0); - ccw_device_work = create_singlethread_workqueue("cio"); - if (!ccw_device_work) - return -ENOMEM; - slow_path_wq = create_singlethread_workqueue("kslowcrw"); - if (!slow_path_wq) { - ret = -ENOMEM; - goto out_err; - } - if ((ret = bus_register (&ccw_bus_type))) - goto out_err; - + ret = bus_register(&ccw_bus_type); + if (ret) + return ret; ret = css_driver_register(&io_subchannel_driver); if (ret) - goto out_err; + bus_unregister(&ccw_bus_type); - return 0; -out_err: - if (ccw_device_work) - destroy_workqueue(ccw_device_work); - if (slow_path_wq) - destroy_workqueue(slow_path_wq); return ret; } @@ -1348,7 +1338,7 @@ static enum io_sch_action sch_get_action(struct subchannel *sch) /* Not operational. */ if (!cdev) return IO_SCH_UNREG; - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) return IO_SCH_UNREG; return IO_SCH_ORPH_UNREG; } @@ -1356,12 +1346,12 @@ static enum io_sch_action sch_get_action(struct subchannel *sch) if (!cdev) return IO_SCH_ATTACH; if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) return IO_SCH_UNREG_ATTACH; return IO_SCH_ORPH_ATTACH; } if ((sch->schib.pmcw.pam & sch->opm) == 0) { - if (!ccw_device_notify(cdev, CIO_NO_PATH)) + if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) return IO_SCH_UNREG; return IO_SCH_DISC; } @@ -1410,6 +1400,12 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) rc = 0; goto out_unlock; case IO_SCH_VERIFY: + if (cdev->private->flags.resuming == 1) { + if (cio_enable_subchannel(sch, (u32)(addr_t)sch)) { + ccw_device_set_notoper(cdev); + break; + } + } /* Trigger path verification. */ io_subchannel_verify(sch); rc = 0; @@ -1448,7 +1444,8 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) break; case IO_SCH_UNREG_ATTACH: /* Unregister ccw device. */ - ccw_device_unregister(cdev); + if (!cdev->private->flags.resuming) + ccw_device_unregister(cdev); break; default: break; @@ -1457,7 +1454,8 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) switch (action) { case IO_SCH_ORPH_UNREG: case IO_SCH_UNREG: - css_sch_device_unregister(sch); + if (!cdev || !cdev->private->flags.resuming) + css_sch_device_unregister(sch); break; case IO_SCH_ORPH_ATTACH: case IO_SCH_UNREG_ATTACH: @@ -1779,26 +1777,42 @@ static void __ccw_device_pm_restore(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); - if (cio_is_console(sch->schid)) - goto out; + spin_lock_irq(sch->lock); + if (cio_is_console(sch->schid)) { + cio_enable_subchannel(sch, (u32)(addr_t)sch); + goto out_unlock; + } /* * While we were sleeping, devices may have gone or become * available again. Kick re-detection. */ - spin_lock_irq(sch->lock); cdev->private->flags.resuming = 1; + css_schedule_eval(sch->schid); + spin_unlock_irq(sch->lock); + css_complete_work(); + + /* cdev may have been moved to a different subchannel. */ + sch = to_subchannel(cdev->dev.parent); + spin_lock_irq(sch->lock); + if (cdev->private->state != DEV_STATE_ONLINE && + cdev->private->state != DEV_STATE_OFFLINE) + goto out_unlock; + ccw_device_recognition(cdev); spin_unlock_irq(sch->lock); wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev) || cdev->private->state == DEV_STATE_DISCONNECTED); -out: + spin_lock_irq(sch->lock); + +out_unlock: cdev->private->flags.resuming = 0; + spin_unlock_irq(sch->lock); } static int resume_handle_boxed(struct ccw_device *cdev) { cdev->private->state = DEV_STATE_BOXED; - if (ccw_device_notify(cdev, CIO_BOXED)) + if (ccw_device_notify(cdev, CIO_BOXED) == NOTIFY_OK) return 0; ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); return -ENODEV; @@ -1807,7 +1821,7 @@ static int resume_handle_boxed(struct ccw_device *cdev) static int resume_handle_disc(struct ccw_device *cdev) { cdev->private->state = DEV_STATE_DISCONNECTED; - if (ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) == NOTIFY_OK) return 0; ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); return -ENODEV; @@ -1816,40 +1830,31 @@ static int resume_handle_disc(struct ccw_device *cdev) static int ccw_device_pm_restore(struct device *dev) { struct ccw_device *cdev = to_ccwdev(dev); - struct subchannel *sch = to_subchannel(cdev->dev.parent); - int ret = 0, cm_enabled; + struct subchannel *sch; + int ret = 0; __ccw_device_pm_restore(cdev); + sch = to_subchannel(cdev->dev.parent); spin_lock_irq(sch->lock); - if (cio_is_console(sch->schid)) { - cio_enable_subchannel(sch, (u32)(addr_t)sch); - spin_unlock_irq(sch->lock); + if (cio_is_console(sch->schid)) goto out_restore; - } - cdev->private->flags.donotify = 0; + /* check recognition results */ switch (cdev->private->state) { case DEV_STATE_OFFLINE: + case DEV_STATE_ONLINE: + cdev->private->flags.donotify = 0; break; case DEV_STATE_BOXED: ret = resume_handle_boxed(cdev); - spin_unlock_irq(sch->lock); if (ret) - goto out; + goto out_unlock; goto out_restore; - case DEV_STATE_DISCONNECTED: - goto out_disc_unlock; default: - goto out_unreg_unlock; - } - /* check if the device id has changed */ - if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) { - CIO_MSG_EVENT(0, "resume: sch 0.%x.%04x: failed (devno " - "changed from %04x to %04x)\n", - sch->schid.ssid, sch->schid.sch_no, - cdev->private->dev_id.devno, - sch->schib.pmcw.dev); - goto out_unreg_unlock; + ret = resume_handle_disc(cdev); + if (ret) + goto out_unlock; + goto out_restore; } /* check if the device type has changed */ if (!ccw_device_test_sense_data(cdev)) { @@ -1858,24 +1863,30 @@ static int ccw_device_pm_restore(struct device *dev) ret = -ENODEV; goto out_unlock; } - if (!cdev->online) { - ret = 0; + if (!cdev->online) goto out_unlock; - } - ret = ccw_device_online(cdev); - if (ret) - goto out_disc_unlock; - cm_enabled = cdev->private->cmb != NULL; + if (ccw_device_online(cdev)) { + ret = resume_handle_disc(cdev); + if (ret) + goto out_unlock; + goto out_restore; + } spin_unlock_irq(sch->lock); - wait_event(cdev->private->wait_q, dev_fsm_final_state(cdev)); - if (cdev->private->state != DEV_STATE_ONLINE) { - spin_lock_irq(sch->lock); - goto out_disc_unlock; + spin_lock_irq(sch->lock); + + if (ccw_device_notify(cdev, CIO_OPER) == NOTIFY_BAD) { + ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); + ret = -ENODEV; + goto out_unlock; } - if (cm_enabled) { + + /* reenable cmf, if needed */ + if (cdev->private->cmb) { + spin_unlock_irq(sch->lock); ret = ccw_set_cmf(cdev, 1); + spin_lock_irq(sch->lock); if (ret) { CIO_MSG_EVENT(2, "resume: cdev 0.%x.%04x: cmf failed " "(rc=%d)\n", cdev->private->dev_id.ssid, @@ -1885,21 +1896,11 @@ static int ccw_device_pm_restore(struct device *dev) } out_restore: + spin_unlock_irq(sch->lock); if (cdev->online && cdev->drv && cdev->drv->restore) ret = cdev->drv->restore(cdev); -out: return ret; -out_disc_unlock: - ret = resume_handle_disc(cdev); - spin_unlock_irq(sch->lock); - if (ret) - return ret; - goto out_restore; - -out_unreg_unlock: - ccw_device_sched_todo(cdev, CDEV_TODO_UNREG_EVAL); - ret = -ENODEV; out_unlock: spin_unlock_irq(sch->lock); return ret; @@ -2028,7 +2029,7 @@ void ccw_device_sched_todo(struct ccw_device *cdev, enum cdev_todo todo) /* Get workqueue ref. */ if (!get_device(&cdev->dev)) return; - if (!queue_work(slow_path_wq, &cdev->private->todo_work)) { + if (!queue_work(cio_work_q, &cdev->private->todo_work)) { /* Already queued, release workqueue ref. */ put_device(&cdev->dev); } @@ -2041,5 +2042,4 @@ EXPORT_SYMBOL(ccw_driver_register); EXPORT_SYMBOL(ccw_driver_unregister); EXPORT_SYMBOL(get_ccwdev_by_busid); EXPORT_SYMBOL(ccw_bus_type); -EXPORT_SYMBOL(ccw_device_work); EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id); diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index bcfe13e42638..379de2d1ec49 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -4,7 +4,7 @@ #include <asm/ccwdev.h> #include <asm/atomic.h> #include <linux/wait.h> - +#include <linux/notifier.h> #include "io_sch.h" /* @@ -71,7 +71,6 @@ dev_fsm_final_state(struct ccw_device *cdev) cdev->private->state == DEV_STATE_BOXED); } -extern struct workqueue_struct *ccw_device_work; extern wait_queue_head_t ccw_device_init_wq; extern atomic_t ccw_device_init_count; int __init io_subchannel_init(void); diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index ae760658a131..c56ab94612f9 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -313,21 +313,43 @@ ccw_device_sense_id_done(struct ccw_device *cdev, int err) } } +/** + * ccw_device_notify() - inform the device's driver about an event + * @cdev: device for which an event occured + * @event: event that occurred + * + * Returns: + * -%EINVAL if the device is offline or has no driver. + * -%EOPNOTSUPP if the device's driver has no notifier registered. + * %NOTIFY_OK if the driver wants to keep the device. + * %NOTIFY_BAD if the driver doesn't want to keep the device. + */ int ccw_device_notify(struct ccw_device *cdev, int event) { + int ret = -EINVAL; + if (!cdev->drv) - return 0; + goto out; if (!cdev->online) - return 0; + goto out; CIO_MSG_EVENT(2, "notify called for 0.%x.%04x, event=%d\n", cdev->private->dev_id.ssid, cdev->private->dev_id.devno, event); - return cdev->drv->notify ? cdev->drv->notify(cdev, event) : 0; + if (!cdev->drv->notify) { + ret = -EOPNOTSUPP; + goto out; + } + if (cdev->drv->notify(cdev, event)) + ret = NOTIFY_OK; + else + ret = NOTIFY_BAD; +out: + return ret; } static void ccw_device_oper_notify(struct ccw_device *cdev) { - if (ccw_device_notify(cdev, CIO_OPER)) { + if (ccw_device_notify(cdev, CIO_OPER) == NOTIFY_OK) { /* Reenable channel measurements, if needed. */ ccw_device_sched_todo(cdev, CDEV_TODO_ENABLE_CMF); return; @@ -361,14 +383,15 @@ ccw_device_done(struct ccw_device *cdev, int state) case DEV_STATE_BOXED: CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED)) + if (cdev->online && + ccw_device_notify(cdev, CIO_BOXED) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); cdev->private->flags.donotify = 0; break; case DEV_STATE_NOT_OPER: CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -378,7 +401,7 @@ ccw_device_done(struct ccw_device *cdev, int state) CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel " "%04x\n", cdev->private->dev_id.devno, sch->schid.sch_no); - if (!ccw_device_notify(cdev, CIO_NO_PATH)) + if (ccw_device_notify(cdev, CIO_NO_PATH) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -586,7 +609,7 @@ ccw_device_offline(struct ccw_device *cdev) static void ccw_device_generic_notoper(struct ccw_device *cdev, enum dev_event dev_event) { - if (!ccw_device_notify(cdev, CIO_GONE)) + if (ccw_device_notify(cdev, CIO_GONE) != NOTIFY_OK) ccw_device_sched_todo(cdev, CDEV_TODO_UNREG); else ccw_device_set_disconnected(cdev); @@ -667,7 +690,7 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event) struct irb *irb; int is_cmd; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; is_cmd = !scsw_is_tm(&irb->scsw); /* Check for unsolicited interrupt. */ if (!scsw_is_solicited(&irb->scsw)) { @@ -732,7 +755,7 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event) { struct irb *irb; - irb = (struct irb *) __LC_IRB; + irb = (struct irb *)&S390_lowcore.irb; /* Check for unsolicited interrupt. */ if (scsw_stctl(&irb->scsw) == (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) { diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index 44f2f6a97f33..48aa0647432b 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -208,18 +208,27 @@ struct qdio_dev_perf_stat { unsigned int eqbs_partial; unsigned int sqbs; unsigned int sqbs_partial; +} ____cacheline_aligned; + +struct qdio_queue_perf_stat { + /* + * Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128. + * Since max. 127 SBALs are scanned reuse entry for 128 as queue full + * aka 127 SBALs found. + */ + unsigned int nr_sbals[8]; + unsigned int nr_sbal_error; + unsigned int nr_sbal_nop; + unsigned int nr_sbal_total; }; struct qdio_input_q { /* input buffer acknowledgement flag */ int polling; - /* first ACK'ed buffer */ int ack_start; - /* how much sbals are acknowledged with qebsm */ int ack_count; - /* last time of noticing incoming data */ u64 timestamp; }; @@ -227,40 +236,27 @@ struct qdio_input_q { struct qdio_output_q { /* PCIs are enabled for the queue */ int pci_out_enabled; - /* IQDIO: output multiple buffers (enhanced SIGA) */ int use_enh_siga; - /* timer to check for more outbound work */ struct timer_list timer; }; +/* + * Note on cache alignment: grouped slsb and write mostly data at the beginning + * sbal[] is read-only and starts on a new cacheline followed by read mostly. + */ struct qdio_q { struct slsb slsb; + union { struct qdio_input_q in; struct qdio_output_q out; } u; - /* queue number */ - int nr; - - /* bitmask of queue number */ - int mask; - - /* input or output queue */ - int is_input_q; - - /* list of thinint input queues */ - struct list_head entry; - - /* upper-layer program handler */ - qdio_handler_t (*handler); - /* * inbound: next buffer the program should check for - * outbound: next buffer to check for having been processed - * by the card + * outbound: next buffer to check if adapter processed it */ int first_to_check; @@ -273,16 +269,32 @@ struct qdio_q { /* number of buffers in use by the adapter */ atomic_t nr_buf_used; - struct qdio_irq *irq_ptr; - struct dentry *debugfs_q; - struct tasklet_struct tasklet; - /* error condition during a data transfer */ unsigned int qdio_error; - struct sl *sl; - struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q]; + struct tasklet_struct tasklet; + struct qdio_queue_perf_stat q_stats; + + struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q] ____cacheline_aligned; + + /* queue number */ + int nr; + + /* bitmask of queue number */ + int mask; + + /* input or output queue */ + int is_input_q; + + /* list of thinint input queues */ + struct list_head entry; + /* upper-layer program handler */ + qdio_handler_t (*handler); + + struct dentry *debugfs_q; + struct qdio_irq *irq_ptr; + struct sl *sl; /* * Warning: Leave this member at the end so it won't be cleared in * qdio_fill_qs. A page is allocated under this pointer and used for @@ -317,12 +329,8 @@ struct qdio_irq { struct qdio_ssqd_desc ssqd_desc; void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *); - struct qdio_dev_perf_stat perf_stat; int perf_stat_enabled; - /* - * Warning: Leave these members together at the end so they won't be - * cleared in qdio_setup_irq. - */ + struct qdr *qdr; unsigned long chsc_page; @@ -331,6 +339,7 @@ struct qdio_irq { debug_info_t *debug_area; struct mutex setup_mutex; + struct qdio_dev_perf_stat perf_stat; }; /* helper functions */ @@ -341,9 +350,20 @@ struct qdio_irq { (irq->qib.qfmt == QDIO_IQDIO_QFMT || \ css_general_characteristics.aif_osa) -#define qperf(qdev,attr) qdev->perf_stat.attr -#define qperf_inc(q,attr) if (q->irq_ptr->perf_stat_enabled) \ - q->irq_ptr->perf_stat.attr++ +#define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr)) + +#define qperf_inc(__q, __attr) \ +({ \ + struct qdio_irq *qdev = (__q)->irq_ptr; \ + if (qdev->perf_stat_enabled) \ + (qdev->perf_stat.__attr)++; \ +}) + +static inline void account_sbals_error(struct qdio_q *q, int count) +{ + q->q_stats.nr_sbal_error += count; + q->q_stats.nr_sbal_total += count; +} /* the highest iqdio queue is used for multicast */ static inline int multicast_outbound(struct qdio_q *q) diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index f49761ff9a00..c94eb2a0fa2e 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -60,7 +60,7 @@ static int qstat_show(struct seq_file *m, void *v) seq_printf(m, "ftc: %d last_move: %d\n", q->first_to_check, q->last_move); seq_printf(m, "polling: %d ack start: %d ack count: %d\n", q->u.in.polling, q->u.in.ack_start, q->u.in.ack_count); - seq_printf(m, "slsb buffer states:\n"); + seq_printf(m, "SBAL states:\n"); seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n"); for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) { @@ -97,6 +97,20 @@ static int qstat_show(struct seq_file *m, void *v) } seq_printf(m, "\n"); seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n"); + + seq_printf(m, "\nSBAL statistics:"); + if (!q->irq_ptr->perf_stat_enabled) { + seq_printf(m, " disabled\n"); + return 0; + } + + seq_printf(m, "\n1 2.. 4.. 8.. " + "16.. 32.. 64.. 127\n"); + for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++) + seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]); + seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n", + q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop, + q->q_stats.nr_sbal_total); return 0; } @@ -181,9 +195,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf, { struct seq_file *seq = file->private_data; struct qdio_irq *irq_ptr = seq->private; + struct qdio_q *q; unsigned long val; char buf[8]; - int ret; + int ret, i; if (!irq_ptr) return 0; @@ -201,6 +216,10 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf, case 0: irq_ptr->perf_stat_enabled = 0; memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); + for_each_input_queue(irq_ptr, q, i) + memset(&q->q_stats, 0, sizeof(q->q_stats)); + for_each_output_queue(irq_ptr, q, i) + memset(&q->q_stats, 0, sizeof(q->q_stats)); break; case 1: irq_ptr->perf_stat_enabled = 1; diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 62b654af9237..232ef047ba34 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -392,6 +392,20 @@ static inline void qdio_stop_polling(struct qdio_q *q) set_buf_state(q, q->u.in.ack_start, SLSB_P_INPUT_NOT_INIT); } +static inline void account_sbals(struct qdio_q *q, int count) +{ + int pos = 0; + + q->q_stats.nr_sbal_total += count; + if (count == QDIO_MAX_BUFFERS_MASK) { + q->q_stats.nr_sbals[7]++; + return; + } + while (count >>= 1) + pos++; + q->q_stats.nr_sbals[pos]++; +} + static void announce_buffer_error(struct qdio_q *q, int count) { q->qdio_error |= QDIO_ERROR_SLSB_STATE; @@ -487,16 +501,22 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) q->first_to_check = add_buf(q->first_to_check, count); if (atomic_sub(count, &q->nr_buf_used) == 0) qperf_inc(q, inbound_queue_full); + if (q->irq_ptr->perf_stat_enabled) + account_sbals(q, count); break; case SLSB_P_INPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); + if (q->irq_ptr->perf_stat_enabled) + account_sbals_error(q, count); break; case SLSB_CU_INPUT_EMPTY: case SLSB_P_INPUT_NOT_INIT: case SLSB_P_INPUT_ACK: + if (q->irq_ptr->perf_stat_enabled) + q->q_stats.nr_sbal_nop++; DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in nop"); break; default: @@ -514,7 +534,7 @@ static int qdio_inbound_q_moved(struct qdio_q *q) if ((bufnr != q->last_move) || q->qdio_error) { q->last_move = bufnr; - if (!is_thinint_irq(q->irq_ptr) && !MACHINE_IS_VM) + if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR) q->u.in.timestamp = get_usecs(); return 1; } else @@ -643,15 +663,21 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); + if (q->irq_ptr->perf_stat_enabled) + account_sbals(q, count); break; case SLSB_P_OUTPUT_ERROR: announce_buffer_error(q, count); /* process the buffer, the upper layer will take care of it */ q->first_to_check = add_buf(q->first_to_check, count); atomic_sub(count, &q->nr_buf_used); + if (q->irq_ptr->perf_stat_enabled) + account_sbals_error(q, count); break; case SLSB_CU_OUTPUT_PRIMED: /* the adapter has not fetched the output yet */ + if (q->irq_ptr->perf_stat_enabled) + q->q_stats.nr_sbal_nop++; DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out primed:%1d", q->nr); break; case SLSB_P_OUTPUT_NOT_INIT: diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 8c2dea5fa2b4..7f4a75465140 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -333,10 +333,10 @@ static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, irq_ptr->qdr->qdf0[i + nr].slsba = (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; - irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY; - irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; + irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; } static void setup_qdr(struct qdio_irq *irq_ptr, @@ -350,7 +350,7 @@ static void setup_qdr(struct qdio_irq *irq_ptr, irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; - irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY; + irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; for (i = 0; i < qdio_init->no_input_qs; i++) __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); @@ -382,7 +382,15 @@ int qdio_setup_irq(struct qdio_initialize *init_data) struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; int rc; - memset(irq_ptr, 0, ((char *)&irq_ptr->qdr) - ((char *)irq_ptr)); + memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); + memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); + memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); + memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); + memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); + + irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; + irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; + /* wipes qib.ac, required by ar7063 */ memset(irq_ptr->qdr, 0, sizeof(struct qdr)); diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 091d904d3182..9942c1031b25 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -198,8 +198,8 @@ static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) .code = 0x0021, }; scssc_area->operation_code = 0; - scssc_area->ks = PAGE_DEFAULT_KEY; - scssc_area->kc = PAGE_DEFAULT_KEY; + scssc_area->ks = PAGE_DEFAULT_KEY >> 4; + scssc_area->kc = PAGE_DEFAULT_KEY >> 4; scssc_area->isc = QDIO_AIRQ_ISC; scssc_area->schid = irq_ptr->schid; diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index c68be24e27d9..ba50fe02e572 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -33,6 +33,7 @@ #include <linux/miscdevice.h> #include <linux/fs.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/compat.h> #include <linux/smp_lock.h> #include <asm/atomic.h> @@ -912,126 +913,105 @@ static struct miscdevice zcrypt_misc_device = { */ static struct proc_dir_entry *zcrypt_entry; -static int sprintcl(unsigned char *outaddr, unsigned char *addr, - unsigned int len) +static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len) { - int hl, i; + int i; - hl = 0; for (i = 0; i < len; i++) - hl += sprintf(outaddr+hl, "%01x", (unsigned int) addr[i]); - hl += sprintf(outaddr+hl, " "); - return hl; + seq_printf(m, "%01x", (unsigned int) addr[i]); + seq_putc(m, ' '); } -static int sprintrw(unsigned char *outaddr, unsigned char *addr, - unsigned int len) +static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len) { - int hl, inl, c, cx; + int inl, c, cx; - hl = sprintf(outaddr, " "); + seq_printf(m, " "); inl = 0; for (c = 0; c < (len / 16); c++) { - hl += sprintcl(outaddr+hl, addr+inl, 16); + sprintcl(m, addr+inl, 16); inl += 16; } cx = len%16; if (cx) { - hl += sprintcl(outaddr+hl, addr+inl, cx); + sprintcl(m, addr+inl, cx); inl += cx; } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int sprinthx(unsigned char *title, unsigned char *outaddr, - unsigned char *addr, unsigned int len) +static void sprinthx(unsigned char *title, struct seq_file *m, + unsigned char *addr, unsigned int len) { - int hl, inl, r, rx; + int inl, r, rx; - hl = sprintf(outaddr, "\n%s\n", title); + seq_printf(m, "\n%s\n", title); inl = 0; for (r = 0; r < (len / 64); r++) { - hl += sprintrw(outaddr+hl, addr+inl, 64); + sprintrw(m, addr+inl, 64); inl += 64; } rx = len % 64; if (rx) { - hl += sprintrw(outaddr+hl, addr+inl, rx); + sprintrw(m, addr+inl, rx); inl += rx; } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int sprinthx4(unsigned char *title, unsigned char *outaddr, - unsigned int *array, unsigned int len) +static void sprinthx4(unsigned char *title, struct seq_file *m, + unsigned int *array, unsigned int len) { - int hl, r; + int r; - hl = sprintf(outaddr, "\n%s\n", title); + seq_printf(m, "\n%s\n", title); for (r = 0; r < len; r++) { if ((r % 8) == 0) - hl += sprintf(outaddr+hl, " "); - hl += sprintf(outaddr+hl, "%08X ", array[r]); + seq_printf(m, " "); + seq_printf(m, "%08X ", array[r]); if ((r % 8) == 7) - hl += sprintf(outaddr+hl, "\n"); + seq_putc(m, '\n'); } - hl += sprintf(outaddr+hl, "\n"); - return hl; + seq_putc(m, '\n'); } -static int zcrypt_status_read(char *resp_buff, char **start, off_t offset, - int count, int *eof, void *data) +static int zcrypt_proc_show(struct seq_file *m, void *v) { - unsigned char *workarea; - int len; - - len = 0; - - /* resp_buff is a page. Use the right half for a work area */ - workarea = resp_buff + 2000; - len += sprintf(resp_buff + len, "\nzcrypt version: %d.%d.%d\n", - ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); - len += sprintf(resp_buff + len, "Cryptographic domain: %d\n", - ap_domain_index); - len += sprintf(resp_buff + len, "Total device count: %d\n", - zcrypt_device_count); - len += sprintf(resp_buff + len, "PCICA count: %d\n", - zcrypt_count_type(ZCRYPT_PCICA)); - len += sprintf(resp_buff + len, "PCICC count: %d\n", - zcrypt_count_type(ZCRYPT_PCICC)); - len += sprintf(resp_buff + len, "PCIXCC MCL2 count: %d\n", - zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); - len += sprintf(resp_buff + len, "PCIXCC MCL3 count: %d\n", - zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); - len += sprintf(resp_buff + len, "CEX2C count: %d\n", - zcrypt_count_type(ZCRYPT_CEX2C)); - len += sprintf(resp_buff + len, "CEX2A count: %d\n", - zcrypt_count_type(ZCRYPT_CEX2A)); - len += sprintf(resp_buff + len, "CEX3C count: %d\n", - zcrypt_count_type(ZCRYPT_CEX3C)); - len += sprintf(resp_buff + len, "CEX3A count: %d\n", - zcrypt_count_type(ZCRYPT_CEX3A)); - len += sprintf(resp_buff + len, "requestq count: %d\n", - zcrypt_requestq_count()); - len += sprintf(resp_buff + len, "pendingq count: %d\n", - zcrypt_pendingq_count()); - len += sprintf(resp_buff + len, "Total open handles: %d\n\n", - atomic_read(&zcrypt_open_count)); + char workarea[sizeof(int) * AP_DEVICES]; + + seq_printf(m, "\nzcrypt version: %d.%d.%d\n", + ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); + seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index); + seq_printf(m, "Total device count: %d\n", zcrypt_device_count); + seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA)); + seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC)); + seq_printf(m, "PCIXCC MCL2 count: %d\n", + zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); + seq_printf(m, "PCIXCC MCL3 count: %d\n", + zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); + seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C)); + seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A)); + seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C)); + seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A)); + seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count()); + seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count()); + seq_printf(m, "Total open handles: %d\n\n", + atomic_read(&zcrypt_open_count)); zcrypt_status_mask(workarea); - len += sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " - "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", - resp_buff+len, workarea, AP_DEVICES); + sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " + "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", + m, workarea, AP_DEVICES); zcrypt_qdepth_mask(workarea); - len += sprinthx("Waiting work element counts", - resp_buff+len, workarea, AP_DEVICES); + sprinthx("Waiting work element counts", m, workarea, AP_DEVICES); zcrypt_perdev_reqcnt((int *) workarea); - len += sprinthx4("Per-device successfully completed request counts", - resp_buff+len,(unsigned int *) workarea, AP_DEVICES); - *eof = 1; - memset((void *) workarea, 0x00, AP_DEVICES * sizeof(unsigned int)); - return len; + sprinthx4("Per-device successfully completed request counts", + m, (unsigned int *) workarea, AP_DEVICES); + return 0; +} + +static int zcrypt_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, zcrypt_proc_show, NULL); } static void zcrypt_disable_card(int index) @@ -1061,11 +1041,11 @@ static void zcrypt_enable_card(int index) spin_unlock_bh(&zcrypt_device_lock); } -static int zcrypt_status_write(struct file *file, const char __user *buffer, - unsigned long count, void *data) +static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer, + size_t count, loff_t *pos) { unsigned char *lbuf, *ptr; - unsigned long local_count; + size_t local_count; int j; if (count <= 0) @@ -1115,6 +1095,15 @@ out: return count; } +static const struct file_operations zcrypt_proc_fops = { + .owner = THIS_MODULE, + .open = zcrypt_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = zcrypt_proc_write, +}; + static int zcrypt_rng_device_count; static u32 *zcrypt_rng_buffer; static int zcrypt_rng_buffer_index; @@ -1197,14 +1186,11 @@ int __init zcrypt_api_init(void) goto out; /* Set up the proc file system */ - zcrypt_entry = create_proc_entry("driver/z90crypt", 0644, NULL); + zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, &zcrypt_proc_fops); if (!zcrypt_entry) { rc = -ENOMEM; goto out_misc; } - zcrypt_entry->data = NULL; - zcrypt_entry->read_proc = zcrypt_status_read; - zcrypt_entry->write_proc = zcrypt_status_write; return 0; diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 2930fc763ac5..b2fc4fd63f7f 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -340,11 +340,11 @@ static void kvm_extint_handler(u16 code) return; /* The LSB might be overloaded, we have to mask it */ - vq = (struct virtqueue *) ((*(long *) __LC_PFAULT_INTPARM) & ~1UL); + vq = (struct virtqueue *)(S390_lowcore.ext_params2 & ~1UL); /* We use the LSB of extparam, to decide, if this interrupt is a config * change or a "standard" interrupt */ - config_changed = (*(int *) __LC_EXT_PARAMS & 1); + config_changed = S390_lowcore.ext_params & 1; if (config_changed) { struct virtio_driver *drv; |