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-rw-r--r--drivers/s390/crypto/ap_asm.h43
-rw-r--r--drivers/s390/crypto/ap_bus.c74
-rw-r--r--drivers/s390/crypto/ap_bus.h4
-rw-r--r--drivers/s390/crypto/ap_card.c9
-rw-r--r--drivers/s390/crypto/ap_queue.c1
5 files changed, 116 insertions, 15 deletions
diff --git a/drivers/s390/crypto/ap_asm.h b/drivers/s390/crypto/ap_asm.h
index cd350345b3d2..0c0c02f26f5b 100644
--- a/drivers/s390/crypto/ap_asm.h
+++ b/drivers/s390/crypto/ap_asm.h
@@ -116,6 +116,49 @@ static inline int ap_qci(void *config)
return reg1;
}
+/*
+ * struct ap_qact_ap_info - used together with the
+ * ap_aqic() function to provide a convenient way
+ * to handle the ap info needed by the qact function.
+ */
+struct ap_qact_ap_info {
+ unsigned int _res1 : 3;
+ unsigned int mode : 3;
+ unsigned int _res2 : 26;
+ unsigned int cat : 8;
+ unsigned int _res3 : 8;
+ unsigned char ver[2];
+};
+
+/**
+ * ap_qact(): Query AP combatibility type.
+ * @qid: The AP queue number
+ * @apinfo: On input the info about the AP queue (content of GR1
+ * according to the AR). On output the alternate AP queue
+ * info provided by the qact function in GR2 is stored in.
+ *
+ * Returns AP queue status. Check response_code field for failures.
+ */
+static inline struct ap_queue_status ap_qact(ap_qid_t qid, int ifbit,
+ struct ap_qact_ap_info *apinfo)
+{
+ register unsigned long reg0 asm ("0") = qid | (5UL << 24)
+ | ((ifbit & 0x01) << 22);
+ register struct ap_qact_ap_info reg1_in asm ("1") = *apinfo;
+ register struct ap_queue_status reg1_out asm ("1");
+ register unsigned long reg2_in asm ("2") = 0;
+ register struct ap_qact_ap_info reg2_out asm ("2");
+
+ asm volatile(
+ ".long 0xb2af0000" /* PQAP(QACT) */
+ : "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out),
+ "+d" (reg2_in), "=d" (reg2_out)
+ :
+ : "cc");
+ *apinfo = reg2_out;
+ return reg1_out;
+}
+
/**
* ap_nqap(): Send message to adjunct processor queue.
* @qid: The AP queue number
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 5f0be2040272..0c1c48c476b7 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -176,6 +176,18 @@ static int ap_apft_available(void)
return test_facility(15);
}
+/*
+ * ap_qact_available(): Test if the PQAP(QACT) subfunction is available.
+ *
+ * Returns 1 if the QACT subfunction is available.
+ */
+static inline int ap_qact_available(void)
+{
+ if (ap_configuration)
+ return ap_configuration->qact;
+ return 0;
+}
+
/**
* ap_test_queue(): Test adjunct processor queue.
* @qid: The AP queue number
@@ -988,6 +1000,47 @@ static int ap_select_domain(void)
}
/*
+ * This function checks the type and returns either 0 for not
+ * supported or the highest compatible type value (which may
+ * include the input type value).
+ */
+static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func)
+{
+ int comp_type = 0;
+
+ /* < CEX2A is not supported */
+ if (rawtype < AP_DEVICE_TYPE_CEX2A)
+ return 0;
+ /* up to CEX6 known and fully supported */
+ if (rawtype <= AP_DEVICE_TYPE_CEX6)
+ return rawtype;
+ /*
+ * unknown new type > CEX6, check for compatibility
+ * to the highest known and supported type which is
+ * currently CEX6 with the help of the QACT function.
+ */
+ if (ap_qact_available()) {
+ struct ap_queue_status status;
+ struct ap_qact_ap_info apinfo = {0};
+
+ apinfo.mode = (func >> 26) & 0x07;
+ apinfo.cat = AP_DEVICE_TYPE_CEX6;
+ status = ap_qact(qid, 0, &apinfo);
+ if (status.response_code == AP_RESPONSE_NORMAL
+ && apinfo.cat >= AP_DEVICE_TYPE_CEX2A
+ && apinfo.cat <= AP_DEVICE_TYPE_CEX6)
+ comp_type = apinfo.cat;
+ }
+ if (!comp_type)
+ AP_DBF(DBF_WARN, "queue=%02x.%04x unable to map type %d\n",
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid), rawtype);
+ else if (comp_type != rawtype)
+ AP_DBF(DBF_INFO, "queue=%02x.%04x map type %d to %d\n",
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid), rawtype, comp_type);
+ return comp_type;
+}
+
+/*
* helper function to be used with bus_find_dev
* matches for the card device with the given id
*/
@@ -1014,8 +1067,8 @@ static void ap_scan_bus(struct work_struct *unused)
struct ap_card *ac;
struct device *dev;
ap_qid_t qid;
- int depth = 0, type = 0;
- unsigned int functions = 0;
+ int comp_type, depth = 0, type = 0;
+ unsigned int func = 0;
int rc, id, dom, borked, domains, defdomdevs = 0;
AP_DBF(DBF_DEBUG, "ap_scan_bus running\n");
@@ -1066,12 +1119,12 @@ static void ap_scan_bus(struct work_struct *unused)
}
continue;
}
- rc = ap_query_queue(qid, &depth, &type, &functions);
+ rc = ap_query_queue(qid, &depth, &type, &func);
if (dev) {
spin_lock_bh(&aq->lock);
if (rc == -ENODEV ||
/* adapter reconfiguration */
- (ac && ac->functions != functions))
+ (ac && ac->functions != func))
aq->state = AP_STATE_BORKED;
borked = aq->state == AP_STATE_BORKED;
spin_unlock_bh(&aq->lock);
@@ -1087,11 +1140,14 @@ static void ap_scan_bus(struct work_struct *unused)
}
if (rc)
continue;
- /* new queue device needed */
+ /* a new queue device is needed, check out comp type */
+ comp_type = ap_get_compatible_type(qid, type, func);
+ if (!comp_type)
+ continue;
+ /* maybe a card device needs to be created first */
if (!ac) {
- /* but first create the card device */
- ac = ap_card_create(id, depth,
- type, functions);
+ ac = ap_card_create(id, depth, type,
+ comp_type, func);
if (!ac)
continue;
ac->ap_dev.device.bus = &ap_bus_type;
@@ -1109,7 +1165,7 @@ static void ap_scan_bus(struct work_struct *unused)
get_device(&ac->ap_dev.device);
}
/* now create the new queue device */
- aq = ap_queue_create(qid, type);
+ aq = ap_queue_create(qid, comp_type);
if (!aq)
continue;
aq->card = ac;
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index 754cf2223cfb..3a0e19d87e7c 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -250,8 +250,8 @@ void ap_queue_remove(struct ap_queue *aq);
void ap_queue_suspend(struct ap_device *ap_dev);
void ap_queue_resume(struct ap_device *ap_dev);
-struct ap_card *ap_card_create(int id, int queue_depth, int device_type,
- unsigned int device_functions);
+struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type,
+ int comp_device_type, unsigned int functions);
int ap_module_init(void);
void ap_module_exit(void);
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
index e8300630e197..428623fa517e 100644
--- a/drivers/s390/crypto/ap_card.c
+++ b/drivers/s390/crypto/ap_card.c
@@ -170,19 +170,20 @@ static void ap_card_device_release(struct device *dev)
kfree(ac);
}
-struct ap_card *ap_card_create(int id, int queue_depth, int device_type,
- unsigned int functions)
+struct ap_card *ap_card_create(int id, int queue_depth, int raw_type,
+ int comp_type, unsigned int functions)
{
struct ap_card *ac;
ac = kzalloc(sizeof(*ac), GFP_KERNEL);
if (!ac)
return NULL;
+ INIT_LIST_HEAD(&ac->list);
INIT_LIST_HEAD(&ac->queues);
ac->ap_dev.device.release = ap_card_device_release;
ac->ap_dev.device.type = &ap_card_type;
- ac->ap_dev.device_type = device_type;
- ac->raw_hwtype = device_type;
+ ac->ap_dev.device_type = comp_type;
+ ac->raw_hwtype = raw_type;
ac->queue_depth = queue_depth;
ac->functions = functions;
ac->id = id;
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index d15903926f46..6f3fcc959796 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -630,6 +630,7 @@ struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type)
aq->state = AP_STATE_RESET_START;
aq->interrupt = AP_INTR_DISABLED;
spin_lock_init(&aq->lock);
+ INIT_LIST_HEAD(&aq->list);
INIT_LIST_HEAD(&aq->pendingq);
INIT_LIST_HEAD(&aq->requestq);
setup_timer(&aq->timeout, ap_request_timeout, (unsigned long) aq);

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