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s390/ap: add error response code field for ap queue devices

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On AP instruction failures the last response code is now
kept in the struct ap_queue. There is also a new sysfs
attribute showing this field (enabled only on debug kernels).

Also slight rework of the AP_DBF macros to get some more
content into one debug feature message line.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Harald Freudenberger 2020-07-02 15:56:15 +02:00 committed by Vasily Gorbik
parent 0b641cbd24
commit 2ea2a6099a
4 changed files with 101 additions and 26 deletions
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40
drivers/s390/crypto/ap_bus.c
View File

@ -214,7 +214,7 @@ static inline int ap_fetch_qci_info(struct ap_config_info *info)
static void __init ap_init_qci_info(void)
{
if (!ap_qci_available()) {
AP_DBF(DBF_INFO, "%s QCI not supported\n", __func__);
AP_DBF_INFO("%s QCI not supported\n", __func__);
return;
}
@ -226,17 +226,17 @@ static void __init ap_init_qci_info(void)
ap_qci_info = NULL;
return;
}
AP_DBF(DBF_INFO, "%s successful fetched initial qci info\n", __func__);
AP_DBF_INFO("%s successful fetched initial qci info\n", __func__);
if (ap_qci_info->apxa) {
if (ap_qci_info->Na) {
ap_max_adapter_id = ap_qci_info->Na;
AP_DBF(DBF_INFO, "%s new ap_max_adapter_id is %d\n",
AP_DBF_INFO("%s new ap_max_adapter_id is %d\n",
__func__, ap_max_adapter_id);
}
if (ap_qci_info->Nd) {
ap_max_domain_id = ap_qci_info->Nd;
AP_DBF(DBF_INFO, "%s new ap_max_domain_id is %d\n",
AP_DBF_INFO("%s new ap_max_domain_id is %d\n",
__func__, ap_max_domain_id);
}
}
@ -618,7 +618,7 @@ static int __ap_revise_reserved(struct device *dev, void *dummy)
drvres = to_ap_drv(dev->driver)->flags
& AP_DRIVER_FLAG_DEFAULT;
if (!!devres != !!drvres) {
AP_DBF(DBF_DEBUG, "reprobing queue=%02x.%04x\n",
AP_DBF_DBG("reprobing queue=%02x.%04x\n",
card, queue);
rc = device_reprobe(dev);
}
@ -796,7 +796,7 @@ EXPORT_SYMBOL(ap_bus_force_rescan);
*/
void ap_bus_cfg_chg(void)
{
AP_DBF(DBF_INFO, "%s config change, forcing bus rescan\n", __func__);
AP_DBF_DBG("%s config change, forcing bus rescan\n", __func__);
ap_bus_force_rescan();
}
@ -947,7 +947,7 @@ static ssize_t ap_domain_store(struct bus_type *bus,
ap_domain_index = domain;
spin_unlock_bh(&ap_domain_lock);
AP_DBF(DBF_INFO, "stored new default domain=%d\n", domain);
AP_DBF_INFO("stored new default domain=%d\n", domain);
return count;
}
@ -1208,7 +1208,7 @@ static void ap_select_domain(void)
}
if (dom <= ap_max_domain_id) {
ap_domain_index = dom;
AP_DBF(DBF_DEBUG, "%s new default domain is %d\n",
AP_DBF_INFO("%s new default domain is %d\n",
__func__, ap_domain_index);
}
out:
@ -1225,8 +1225,11 @@ 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)
if (rawtype < AP_DEVICE_TYPE_CEX2A) {
AP_DBF_WARN("get_comp_type queue=%02x.%04x unsupported type %d\n",
AP_QID_CARD(qid), AP_QID_QUEUE(qid), rawtype);
return 0;
}
/* up to CEX7 known and fully supported */
if (rawtype <= AP_DEVICE_TYPE_CEX7)
return rawtype;
@ -1248,11 +1251,12 @@ static int ap_get_compatible_type(ap_qid_t qid, int rawtype, unsigned int func)
comp_type = apinfo.cat;
}
if (!comp_type)
AP_DBF(DBF_WARN, "queue=%02x.%04x unable to map type %d\n",
AP_DBF_WARN("get_comp_type 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);
AP_DBF_INFO("get_comp_type queue=%02x.%04x map type %d to %d\n",
AP_QID_CARD(qid), AP_QID_QUEUE(qid),
rawtype, comp_type);
return comp_type;
}
@ -1333,11 +1337,11 @@ static void _ap_scan_bus_adapter(int id)
broken = true;
} else if (ac->raw_hwtype != type) {
/* card type has changed */
AP_DBF(DBF_INFO, "card=%02x type changed.\n", id);
AP_DBF_INFO("card=%02x type changed.\n", id);
broken = true;
} else if (ac->functions != func) {
/* card functions have changed */
AP_DBF(DBF_INFO, "card=%02x functions changed.\n", id);
AP_DBF_INFO("card=%02x functions changed.\n", id);
broken = true;
}
if (broken) {
@ -1385,8 +1389,7 @@ static void _ap_scan_bus_adapter(int id)
}
if (broken) {
/* Remove broken device */
AP_DBF(DBF_DEBUG,
"removing broken queue=%02x.%04x\n",
AP_DBF_DBG("removing broken queue=%02x.%04x\n",
id, dom);
device_unregister(dev);
}
@ -1448,7 +1451,7 @@ static void ap_scan_bus(struct work_struct *unused)
ap_fetch_qci_info(ap_qci_info);
ap_select_domain();
AP_DBF(DBF_DEBUG, "%s running\n", __func__);
AP_DBF_DBG("%s running\n", __func__);
/* loop over all possible adapters */
for (id = 0; id < AP_DEVICES; id++)
@ -1463,8 +1466,7 @@ static void ap_scan_bus(struct work_struct *unused)
if (dev)
put_device(dev);
else
AP_DBF(DBF_INFO,
"no queue device with default domain %d available\n",
AP_DBF_INFO("no queue device with default domain %d available\n",
ap_domain_index);
}

1
drivers/s390/crypto/ap_bus.h
View File

@ -190,6 +190,7 @@ struct ap_queue {
struct list_head requestq; /* List of message yet to be sent. */
struct ap_message *reply; /* Per device reply message. */
enum ap_sm_state sm_state; /* ap queue state machine state */
int last_err_rc; /* last error state response code */
};
#define to_ap_queue(x) container_of((x), struct ap_queue, ap_dev.device)

8
drivers/s390/crypto/ap_debug.h
View File

@ -20,6 +20,14 @@
#define AP_DBF(...) \
debug_sprintf_event(ap_dbf_info, ##__VA_ARGS__)
#define AP_DBF_ERR(...) \
debug_sprintf_event(ap_dbf_info, DBF_ERR, ##__VA_ARGS__)
#define AP_DBF_WARN(...) \
debug_sprintf_event(ap_dbf_info, DBF_WARN, ##__VA_ARGS__)
#define AP_DBF_INFO(...) \
debug_sprintf_event(ap_dbf_info, DBF_INFO, ##__VA_ARGS__)
#define AP_DBF_DBG(...) \
debug_sprintf_event(ap_dbf_info, DBF_DEBUG, ##__VA_ARGS__)
extern debug_info_t *ap_dbf_info;

64
drivers/s390/crypto/ap_queue.c
View File

@ -196,6 +196,10 @@ static enum ap_sm_wait ap_sm_read(struct ap_queue *aq)
return AP_SM_WAIT_NONE;
default:
aq->dev_state = AP_DEV_STATE_ERROR;
aq->last_err_rc = status.response_code;
AP_DBF_WARN("%s RC 0x%02hhx on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n",
__func__, status.response_code,
AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
return AP_SM_WAIT_NONE;
}
}
@ -246,6 +250,10 @@ static enum ap_sm_wait ap_sm_write(struct ap_queue *aq)
return AP_SM_WAIT_AGAIN;
default:
aq->dev_state = AP_DEV_STATE_ERROR;
aq->last_err_rc = status.response_code;
AP_DBF_WARN("%s RC 0x%02hhx on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n",
__func__, status.response_code,
AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
return AP_SM_WAIT_NONE;
}
}
@ -285,6 +293,10 @@ static enum ap_sm_wait ap_sm_reset(struct ap_queue *aq)
case AP_RESPONSE_CHECKSTOPPED:
default:
aq->dev_state = AP_DEV_STATE_ERROR;
aq->last_err_rc = status.response_code;
AP_DBF_WARN("%s RC 0x%02hhx on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n",
__func__, status.response_code,
AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
return AP_SM_WAIT_NONE;
}
}
@ -324,6 +336,10 @@ static enum ap_sm_wait ap_sm_reset_wait(struct ap_queue *aq)
case AP_RESPONSE_CHECKSTOPPED:
default:
aq->dev_state = AP_DEV_STATE_ERROR;
aq->last_err_rc = status.response_code;
AP_DBF_WARN("%s RC 0x%02hhx on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n",
__func__, status.response_code,
AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
return AP_SM_WAIT_NONE;
}
}
@ -361,6 +377,10 @@ static enum ap_sm_wait ap_sm_setirq_wait(struct ap_queue *aq)
return AP_SM_WAIT_TIMEOUT;
default:
aq->dev_state = AP_DEV_STATE_ERROR;
aq->last_err_rc = status.response_code;
AP_DBF_WARN("%s RC 0x%02hhx on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n",
__func__, status.response_code,
AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid));
return AP_SM_WAIT_NONE;
}
}
@ -605,6 +625,49 @@ static ssize_t states_show(struct device *dev,
return rc;
}
static DEVICE_ATTR_RO(states);
static ssize_t last_err_rc_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ap_queue *aq = to_ap_queue(dev);
int rc;
spin_lock_bh(&aq->lock);
rc = aq->last_err_rc;
spin_unlock_bh(&aq->lock);
switch (rc) {
case AP_RESPONSE_NORMAL:
return scnprintf(buf, PAGE_SIZE, "NORMAL\n");
case AP_RESPONSE_Q_NOT_AVAIL:
return scnprintf(buf, PAGE_SIZE, "Q_NOT_AVAIL\n");
case AP_RESPONSE_RESET_IN_PROGRESS:
return scnprintf(buf, PAGE_SIZE, "RESET_IN_PROGRESS\n");
case AP_RESPONSE_DECONFIGURED:
return scnprintf(buf, PAGE_SIZE, "DECONFIGURED\n");
case AP_RESPONSE_CHECKSTOPPED:
return scnprintf(buf, PAGE_SIZE, "CHECKSTOPPED\n");
case AP_RESPONSE_BUSY:
return scnprintf(buf, PAGE_SIZE, "BUSY\n");
case AP_RESPONSE_INVALID_ADDRESS:
return scnprintf(buf, PAGE_SIZE, "INVALID_ADDRESS\n");
case AP_RESPONSE_OTHERWISE_CHANGED:
return scnprintf(buf, PAGE_SIZE, "OTHERWISE_CHANGED\n");
case AP_RESPONSE_Q_FULL:
return scnprintf(buf, PAGE_SIZE, "Q_FULL/NO_PENDING_REPLY\n");
case AP_RESPONSE_INDEX_TOO_BIG:
return scnprintf(buf, PAGE_SIZE, "INDEX_TOO_BIG\n");
case AP_RESPONSE_NO_FIRST_PART:
return scnprintf(buf, PAGE_SIZE, "NO_FIRST_PART\n");
case AP_RESPONSE_MESSAGE_TOO_BIG:
return scnprintf(buf, PAGE_SIZE, "MESSAGE_TOO_BIG\n");
case AP_RESPONSE_REQ_FAC_NOT_INST:
return scnprintf(buf, PAGE_SIZE, "REQ_FAC_NOT_INST\n");
default:
return scnprintf(buf, PAGE_SIZE, "response code %d\n", rc);
}
}
static DEVICE_ATTR_RO(last_err_rc);
#endif
static struct attribute *ap_queue_dev_attrs[] = {
@ -615,6 +678,7 @@ static struct attribute *ap_queue_dev_attrs[] = {
&dev_attr_interrupt.attr,
#ifdef CONFIG_ZCRYPT_DEBUG
&dev_attr_states.attr,
&dev_attr_last_err_rc.attr,
#endif
NULL
};