summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/s390/block/dasd.c48
-rw-r--r--drivers/s390/block/dasd_devmap.c13
-rw-r--r--drivers/s390/block/dasd_genhd.c1
-rw-r--r--drivers/s390/block/dasd_int.h1
-rw-r--r--drivers/s390/block/dasd_proc.c109
-rw-r--r--drivers/s390/char/zcore.c163
-rw-r--r--drivers/s390/cio/ccwreq.c2
-rw-r--r--drivers/s390/cio/chsc.c2
-rw-r--r--drivers/s390/cio/chsc_sch.c4
-rw-r--r--drivers/s390/cio/cio.c14
-rw-r--r--drivers/s390/cio/crw.c29
-rw-r--r--drivers/s390/cio/css.c79
-rw-r--r--drivers/s390/cio/css.h5
-rw-r--r--drivers/s390/cio/device.c160
-rw-r--r--drivers/s390/cio/device.h3
-rw-r--r--drivers/s390/cio/device_fsm.c43
-rw-r--r--drivers/s390/cio/qdio.h92
-rw-r--r--drivers/s390/cio/qdio_debug.c23
-rw-r--r--drivers/s390/cio/qdio_main.c28
-rw-r--r--drivers/s390/cio/qdio_setup.c20
-rw-r--r--drivers/s390/cio/qdio_thinint.c4
-rw-r--r--drivers/s390/crypto/zcrypt_api.c158
-rw-r--r--drivers/s390/kvm/kvm_virtio.c4
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;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 14:17:09 +0100