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Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_early.c12
-rw-r--r--drivers/s390/char/sclp_ocf.c23
-rw-r--r--drivers/s390/cio/chp.c60
-rw-r--r--drivers/s390/crypto/ap_bus.c50
-rw-r--r--drivers/s390/crypto/ap_bus.h1
-rw-r--r--drivers/s390/crypto/zcrypt_cex2a.c2
-rw-r--r--drivers/s390/crypto/zcrypt_cex4.c2
-rw-r--r--drivers/s390/crypto/zcrypt_pcixcc.c2
8 files changed, 115 insertions, 37 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index 0ac520dd1b21..c71df0c7dedc 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -46,7 +46,8 @@ struct read_info_sccb {
u64 rnmax2; /* 104-111 */
u8 _pad_112[116 - 112]; /* 112-115 */
u8 fac116; /* 116 */
- u8 _pad_117[119 - 117]; /* 117-118 */
+ u8 fac117; /* 117 */
+ u8 _pad_118; /* 118 */
u8 fac119; /* 119 */
u16 hcpua; /* 120-121 */
u8 _pad_122[124 - 122]; /* 122-123 */
@@ -114,7 +115,12 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp.facilities = sccb->facilities;
sclp.has_sprp = !!(sccb->fac84 & 0x02);
sclp.has_core_type = !!(sccb->fac84 & 0x01);
+ sclp.has_gsls = !!(sccb->fac85 & 0x80);
+ sclp.has_64bscao = !!(sccb->fac116 & 0x80);
+ sclp.has_cmma = !!(sccb->fac116 & 0x40);
sclp.has_esca = !!(sccb->fac116 & 0x08);
+ sclp.has_pfmfi = !!(sccb->fac117 & 0x40);
+ sclp.has_ibs = !!(sccb->fac117 & 0x20);
sclp.has_hvs = !!(sccb->fac119 & 0x80);
if (sccb->fac85 & 0x02)
S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
@@ -145,6 +151,10 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp.has_siif = cpue->siif;
sclp.has_sigpif = cpue->sigpif;
sclp.has_sief2 = cpue->sief2;
+ sclp.has_gpere = cpue->gpere;
+ sclp.has_ib = cpue->ib;
+ sclp.has_cei = cpue->cei;
+ sclp.has_skey = cpue->skey;
break;
}
diff --git a/drivers/s390/char/sclp_ocf.c b/drivers/s390/char/sclp_ocf.c
index 2553db0fdb52..f59b71776bbd 100644
--- a/drivers/s390/char/sclp_ocf.c
+++ b/drivers/s390/char/sclp_ocf.c
@@ -26,7 +26,7 @@
#define OCF_LENGTH_CPC_NAME 8UL
static char hmc_network[OCF_LENGTH_HMC_NETWORK + 1];
-static char cpc_name[OCF_LENGTH_CPC_NAME + 1];
+static char cpc_name[OCF_LENGTH_CPC_NAME]; /* in EBCDIC */
static DEFINE_SPINLOCK(sclp_ocf_lock);
static struct work_struct sclp_ocf_change_work;
@@ -72,9 +72,8 @@ static void sclp_ocf_handler(struct evbuf_header *evbuf)
}
if (cpc) {
size = min(OCF_LENGTH_CPC_NAME, (size_t) cpc->length);
+ memset(cpc_name, 0, OCF_LENGTH_CPC_NAME);
memcpy(cpc_name, cpc + 1, size);
- EBCASC(cpc_name, size);
- cpc_name[size] = 0;
}
spin_unlock(&sclp_ocf_lock);
schedule_work(&sclp_ocf_change_work);
@@ -85,15 +84,23 @@ static struct sclp_register sclp_ocf_event = {
.receiver_fn = sclp_ocf_handler,
};
+void sclp_ocf_cpc_name_copy(char *dst)
+{
+ spin_lock_irq(&sclp_ocf_lock);
+ memcpy(dst, cpc_name, OCF_LENGTH_CPC_NAME);
+ spin_unlock_irq(&sclp_ocf_lock);
+}
+EXPORT_SYMBOL(sclp_ocf_cpc_name_copy);
+
static ssize_t cpc_name_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
- int rc;
+ char name[OCF_LENGTH_CPC_NAME + 1];
- spin_lock_irq(&sclp_ocf_lock);
- rc = snprintf(page, PAGE_SIZE, "%s\n", cpc_name);
- spin_unlock_irq(&sclp_ocf_lock);
- return rc;
+ sclp_ocf_cpc_name_copy(name);
+ name[OCF_LENGTH_CPC_NAME] = 0;
+ EBCASC(name, OCF_LENGTH_CPC_NAME);
+ return snprintf(page, PAGE_SIZE, "%s\n", name);
}
static struct kobj_attribute cpc_name_attr =
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index e96aced58627..46be25c7461e 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -37,8 +37,7 @@ enum cfg_task_t {
/* Map for pending configure tasks. */
static enum cfg_task_t chp_cfg_task[__MAX_CSSID + 1][__MAX_CHPID + 1];
-static DEFINE_MUTEX(cfg_lock);
-static int cfg_busy;
+static DEFINE_SPINLOCK(cfg_lock);
/* Map for channel-path status. */
static struct sclp_chp_info chp_info;
@@ -666,6 +665,20 @@ static void cfg_set_task(struct chp_id chpid, enum cfg_task_t cfg)
chp_cfg_task[chpid.cssid][chpid.id] = cfg;
}
+/* Fetch the first configure task. Set chpid accordingly. */
+static enum cfg_task_t chp_cfg_fetch_task(struct chp_id *chpid)
+{
+ enum cfg_task_t t = cfg_none;
+
+ chp_id_for_each(chpid) {
+ t = cfg_get_task(*chpid);
+ if (t != cfg_none)
+ break;
+ }
+
+ return t;
+}
+
/* Perform one configure/deconfigure request. Reschedule work function until
* last request. */
static void cfg_func(struct work_struct *work)
@@ -674,16 +687,9 @@ static void cfg_func(struct work_struct *work)
enum cfg_task_t t;
int rc;
- mutex_lock(&cfg_lock);
- t = cfg_none;
- chp_id_for_each(&chpid) {
- t = cfg_get_task(chpid);
- if (t != cfg_none) {
- cfg_set_task(chpid, cfg_none);
- break;
- }
- }
- mutex_unlock(&cfg_lock);
+ spin_lock(&cfg_lock);
+ t = chp_cfg_fetch_task(&chpid);
+ spin_unlock(&cfg_lock);
switch (t) {
case cfg_configure:
@@ -709,12 +715,13 @@ static void cfg_func(struct work_struct *work)
case cfg_none:
/* Get updated information after last change. */
info_update();
- mutex_lock(&cfg_lock);
- cfg_busy = 0;
- mutex_unlock(&cfg_lock);
wake_up_interruptible(&cfg_wait_queue);
return;
}
+ spin_lock(&cfg_lock);
+ if (t == cfg_get_task(chpid))
+ cfg_set_task(chpid, cfg_none);
+ spin_unlock(&cfg_lock);
schedule_work(&cfg_work);
}
@@ -729,10 +736,9 @@ void chp_cfg_schedule(struct chp_id chpid, int configure)
{
CIO_MSG_EVENT(2, "chp_cfg_sched%x.%02x=%d\n", chpid.cssid, chpid.id,
configure);
- mutex_lock(&cfg_lock);
+ spin_lock(&cfg_lock);
cfg_set_task(chpid, configure ? cfg_configure : cfg_deconfigure);
- cfg_busy = 1;
- mutex_unlock(&cfg_lock);
+ spin_unlock(&cfg_lock);
schedule_work(&cfg_work);
}
@@ -746,15 +752,27 @@ void chp_cfg_schedule(struct chp_id chpid, int configure)
void chp_cfg_cancel_deconfigure(struct chp_id chpid)
{
CIO_MSG_EVENT(2, "chp_cfg_cancel:%x.%02x\n", chpid.cssid, chpid.id);
- mutex_lock(&cfg_lock);
+ spin_lock(&cfg_lock);
if (cfg_get_task(chpid) == cfg_deconfigure)
cfg_set_task(chpid, cfg_none);
- mutex_unlock(&cfg_lock);
+ spin_unlock(&cfg_lock);
+}
+
+static bool cfg_idle(void)
+{
+ struct chp_id chpid;
+ enum cfg_task_t t;
+
+ spin_lock(&cfg_lock);
+ t = chp_cfg_fetch_task(&chpid);
+ spin_unlock(&cfg_lock);
+
+ return t == cfg_none;
}
static int cfg_wait_idle(void)
{
- if (wait_event_interruptible(cfg_wait_queue, !cfg_busy))
+ if (wait_event_interruptible(cfg_wait_queue, cfg_idle()))
return -ERESTARTSYS;
return 0;
}
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 4feb27215ab6..ed92fb09fc8e 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -468,6 +468,8 @@ int ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length)
{
struct ap_queue_status status;
+ if (msg == NULL)
+ return -EINVAL;
status = __ap_recv(qid, psmid, msg, length);
switch (status.response_code) {
case AP_RESPONSE_NORMAL:
@@ -617,6 +619,8 @@ static enum ap_wait ap_sm_read(struct ap_device *ap_dev)
{
struct ap_queue_status status;
+ if (!ap_dev->reply)
+ return AP_WAIT_NONE;
status = ap_sm_recv(ap_dev);
switch (status.response_code) {
case AP_RESPONSE_NORMAL:
@@ -638,6 +642,31 @@ static enum ap_wait ap_sm_read(struct ap_device *ap_dev)
}
/**
+ * ap_sm_suspend_read(): Receive pending reply messages from an AP device
+ * without changing the device state in between. In suspend mode we don't
+ * allow sending new requests, therefore just fetch pending replies.
+ * @ap_dev: pointer to the AP device
+ *
+ * Returns AP_WAIT_NONE or AP_WAIT_AGAIN
+ */
+static enum ap_wait ap_sm_suspend_read(struct ap_device *ap_dev)
+{
+ struct ap_queue_status status;
+
+ if (!ap_dev->reply)
+ return AP_WAIT_NONE;
+ status = ap_sm_recv(ap_dev);
+ switch (status.response_code) {
+ case AP_RESPONSE_NORMAL:
+ if (ap_dev->queue_count > 0)
+ return AP_WAIT_AGAIN;
+ /* fall through */
+ default:
+ return AP_WAIT_NONE;
+ }
+}
+
+/**
* ap_sm_write(): Send messages from the request queue to an AP device.
* @ap_dev: pointer to the AP device
*
@@ -738,7 +767,7 @@ static enum ap_wait ap_sm_reset_wait(struct ap_device *ap_dev)
struct ap_queue_status status;
unsigned long info;
- if (ap_dev->queue_count > 0)
+ if (ap_dev->queue_count > 0 && ap_dev->reply)
/* Try to read a completed message and get the status */
status = ap_sm_recv(ap_dev);
else
@@ -778,7 +807,7 @@ static enum ap_wait ap_sm_setirq_wait(struct ap_device *ap_dev)
struct ap_queue_status status;
unsigned long info;
- if (ap_dev->queue_count > 0)
+ if (ap_dev->queue_count > 0 && ap_dev->reply)
/* Try to read a completed message and get the status */
status = ap_sm_recv(ap_dev);
else
@@ -834,7 +863,7 @@ static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = {
[AP_EVENT_TIMEOUT] = ap_sm_reset,
},
[AP_STATE_SUSPEND_WAIT] = {
- [AP_EVENT_POLL] = ap_sm_read,
+ [AP_EVENT_POLL] = ap_sm_suspend_read,
[AP_EVENT_TIMEOUT] = ap_sm_nop,
},
[AP_STATE_BORKED] = {
@@ -1335,6 +1364,17 @@ static struct bus_type ap_bus_type = {
.resume = ap_dev_resume,
};
+void ap_device_init_reply(struct ap_device *ap_dev,
+ struct ap_message *reply)
+{
+ ap_dev->reply = reply;
+
+ spin_lock_bh(&ap_dev->lock);
+ ap_sm_wait(ap_sm_event(ap_dev, AP_EVENT_POLL));
+ spin_unlock_bh(&ap_dev->lock);
+}
+EXPORT_SYMBOL(ap_device_init_reply);
+
static int ap_device_probe(struct device *dev)
{
struct ap_device *ap_dev = to_ap_dev(dev);
@@ -1779,7 +1819,8 @@ int __init ap_module_init(void)
if (ap_domain_index < -1 || ap_domain_index > max_domain_id) {
pr_warn("%d is not a valid cryptographic domain\n",
ap_domain_index);
- return -EINVAL;
+ rc = -EINVAL;
+ goto out_free;
}
/* In resume callback we need to know if the user had set the domain.
* If so, we can not just reset it.
@@ -1852,6 +1893,7 @@ out:
unregister_reset_call(&ap_reset_call);
if (ap_using_interrupts())
unregister_adapter_interrupt(&ap_airq);
+out_free:
kfree(ap_configuration);
return rc;
}
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 6adcbdf225d1..d7fdf5c024d7 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -262,6 +262,7 @@ void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg);
void ap_flush_queue(struct ap_device *ap_dev);
void ap_bus_force_rescan(void);
+void ap_device_init_reply(struct ap_device *ap_dev, struct ap_message *ap_msg);
int ap_module_init(void);
void ap_module_exit(void);
diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c
index 1e849d6e1dfe..15104aaa075a 100644
--- a/drivers/s390/crypto/zcrypt_cex2a.c
+++ b/drivers/s390/crypto/zcrypt_cex2a.c
@@ -126,7 +126,7 @@ static int zcrypt_cex2a_probe(struct ap_device *ap_dev)
MSGTYPE50_VARIANT_DEFAULT);
zdev->ap_dev = ap_dev;
zdev->online = 1;
- ap_dev->reply = &zdev->reply;
+ ap_device_init_reply(ap_dev, &zdev->reply);
ap_dev->private = zdev;
rc = zcrypt_device_register(zdev);
if (rc) {
diff --git a/drivers/s390/crypto/zcrypt_cex4.c b/drivers/s390/crypto/zcrypt_cex4.c
index bb3908818505..ccb2e78ebf0e 100644
--- a/drivers/s390/crypto/zcrypt_cex4.c
+++ b/drivers/s390/crypto/zcrypt_cex4.c
@@ -147,7 +147,7 @@ static int zcrypt_cex4_probe(struct ap_device *ap_dev)
return -ENODEV;
zdev->ap_dev = ap_dev;
zdev->online = 1;
- ap_dev->reply = &zdev->reply;
+ ap_device_init_reply(ap_dev, &zdev->reply);
ap_dev->private = zdev;
rc = zcrypt_device_register(zdev);
if (rc) {
diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c
index f41852768953..df8f0c4dacb7 100644
--- a/drivers/s390/crypto/zcrypt_pcixcc.c
+++ b/drivers/s390/crypto/zcrypt_pcixcc.c
@@ -327,7 +327,7 @@ static int zcrypt_pcixcc_probe(struct ap_device *ap_dev)
else
zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME,
MSGTYPE06_VARIANT_NORNG);
- ap_dev->reply = &zdev->reply;
+ ap_device_init_reply(ap_dev, &zdev->reply);
ap_dev->private = zdev;
rc = zcrypt_device_register(zdev);
if (rc)
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-21 11:48:21 +0300