diff options
Diffstat (limited to 'drivers/s390/crypto/ap_queue.c')
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 410 |
1 files changed, 348 insertions, 62 deletions
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index 2637fe1df727..ed8f813653fe 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -18,6 +18,21 @@ static void __ap_flush_queue(struct ap_queue *aq); +/* + * some AP queue helper functions + */ + +static inline bool ap_q_supports_bind(struct ap_queue *aq) +{ + return ap_test_bit(&aq->card->functions, AP_FUNC_EP11) || + ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL); +} + +static inline bool ap_q_supports_assoc(struct ap_queue *aq) +{ + return ap_test_bit(&aq->card->functions, AP_FUNC_EP11); +} + /** * ap_queue_enable_irq(): Enable interrupt support on this AP queue. * @aq: The AP queue @@ -35,6 +50,8 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind) qirqctrl.ir = 1; qirqctrl.isc = AP_ISC; status = ap_aqic(aq->qid, qirqctrl, virt_to_phys(ind)); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_OTHERWISE_CHANGED: @@ -59,7 +76,7 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind) * @qid: The AP queue number * @psmid: The program supplied message identifier * @msg: The message text - * @length: The message length + * @msglen: The message length * @special: Special Bit * * Returns AP queue status structure. @@ -68,19 +85,21 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind) * because a segment boundary was reached. The NQAP is repeated. */ static inline struct ap_queue_status -__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length, +__ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t msglen, int special) { if (special) qid |= 0x400000UL; - return ap_nqap(qid, psmid, msg, length); + return ap_nqap(qid, psmid, msg, msglen); } -int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) +int ap_send(ap_qid_t qid, unsigned long psmid, void *msg, size_t msglen) { struct ap_queue_status status; - status = __ap_send(qid, psmid, msg, length, 0); + status = __ap_send(qid, psmid, msg, msglen, 0); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: return 0; @@ -95,13 +114,15 @@ int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) } EXPORT_SYMBOL(ap_send); -int ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length) +int ap_recv(ap_qid_t qid, unsigned long *psmid, void *msg, size_t msglen) { struct ap_queue_status status; if (!msg) return -EINVAL; - status = ap_dqap(qid, psmid, msg, length, NULL, NULL); + status = ap_dqap(qid, psmid, msg, msglen, NULL, NULL, NULL); + if (status.async) + return -EPERM; switch (status.response_code) { case AP_RESPONSE_NORMAL: return 0; @@ -150,7 +171,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq) do { status = ap_dqap(aq->qid, &aq->reply->psmid, aq->reply->msg, aq->reply->bufsize, - &reslen, &resgr0); + &aq->reply->len, &reslen, &resgr0); parts++; } while (status.response_code == 0xFF && resgr0 != 0); @@ -177,7 +198,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq) break; } if (!found) { - AP_DBF_WARN("%s unassociated reply psmid=0x%016llx on 0x%02x.%04x\n", + AP_DBF_WARN("%s unassociated reply psmid=0x%016lx on 0x%02x.%04x\n", __func__, aq->reply->psmid, AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); } @@ -210,6 +231,8 @@ static enum ap_sm_wait ap_sm_read(struct ap_queue *aq) if (!aq->reply) return AP_SM_WAIT_NONE; status = ap_sm_recv(aq); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: if (aq->queue_count > 0) { @@ -221,7 +244,7 @@ static enum ap_sm_wait ap_sm_read(struct ap_queue *aq) case AP_RESPONSE_NO_PENDING_REPLY: if (aq->queue_count > 0) return aq->interrupt ? - AP_SM_WAIT_INTERRUPT : AP_SM_WAIT_TIMEOUT; + AP_SM_WAIT_INTERRUPT : AP_SM_WAIT_HIGH_TIMEOUT; aq->sm_state = AP_SM_STATE_IDLE; return AP_SM_WAIT_NONE; default: @@ -261,6 +284,8 @@ static enum ap_sm_wait ap_sm_write(struct ap_queue *aq) status = __ap_send(qid, ap_msg->psmid, ap_msg->msg, ap_msg->len, ap_msg->flags & AP_MSG_FLAG_SPECIAL); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: aq->queue_count = max_t(int, 1, aq->queue_count + 1); @@ -277,10 +302,10 @@ static enum ap_sm_wait ap_sm_write(struct ap_queue *aq) case AP_RESPONSE_Q_FULL: aq->sm_state = AP_SM_STATE_QUEUE_FULL; return aq->interrupt ? - AP_SM_WAIT_INTERRUPT : AP_SM_WAIT_TIMEOUT; + AP_SM_WAIT_INTERRUPT : AP_SM_WAIT_HIGH_TIMEOUT; case AP_RESPONSE_RESET_IN_PROGRESS: aq->sm_state = AP_SM_STATE_RESET_WAIT; - return AP_SM_WAIT_TIMEOUT; + return AP_SM_WAIT_LOW_TIMEOUT; case AP_RESPONSE_INVALID_DOMAIN: AP_DBF_WARN("%s RESPONSE_INVALID_DOMAIN on NQAP\n", __func__); fallthrough; @@ -322,13 +347,16 @@ static enum ap_sm_wait ap_sm_reset(struct ap_queue *aq) { struct ap_queue_status status; - status = ap_rapq(aq->qid); + status = ap_rapq(aq->qid, aq->rapq_fbit); + if (status.async) + return AP_SM_WAIT_NONE; switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_RESET_IN_PROGRESS: aq->sm_state = AP_SM_STATE_RESET_WAIT; aq->interrupt = false; - return AP_SM_WAIT_TIMEOUT; + aq->rapq_fbit = 0; + return AP_SM_WAIT_LOW_TIMEOUT; default: aq->dev_state = AP_DEV_STATE_ERROR; aq->last_err_rc = status.response_code; @@ -368,7 +396,7 @@ static enum ap_sm_wait ap_sm_reset_wait(struct ap_queue *aq) return AP_SM_WAIT_AGAIN; case AP_RESPONSE_BUSY: case AP_RESPONSE_RESET_IN_PROGRESS: - return AP_SM_WAIT_TIMEOUT; + return AP_SM_WAIT_LOW_TIMEOUT; case AP_RESPONSE_Q_NOT_AVAIL: case AP_RESPONSE_DECONFIGURED: case AP_RESPONSE_CHECKSTOPPED: @@ -412,7 +440,7 @@ static enum ap_sm_wait ap_sm_setirq_wait(struct ap_queue *aq) return AP_SM_WAIT_AGAIN; fallthrough; case AP_RESPONSE_NO_PENDING_REPLY: - return AP_SM_WAIT_TIMEOUT; + return AP_SM_WAIT_LOW_TIMEOUT; default: aq->dev_state = AP_DEV_STATE_ERROR; aq->last_err_rc = status.response_code; @@ -423,6 +451,59 @@ static enum ap_sm_wait ap_sm_setirq_wait(struct ap_queue *aq) } } +/** + * ap_sm_assoc_wait(): Test queue for completion of a pending + * association request. + * @aq: pointer to the AP queue + */ +static enum ap_sm_wait ap_sm_assoc_wait(struct ap_queue *aq) +{ + struct ap_queue_status status; + struct ap_tapq_gr2 info; + + status = ap_test_queue(aq->qid, 1, &info); + /* handle asynchronous error on this queue */ + if (status.async && status.response_code) { + aq->dev_state = AP_DEV_STATE_ERROR; + aq->last_err_rc = status.response_code; + AP_DBF_WARN("%s asynch RC 0x%02x 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; + } + if (status.response_code > AP_RESPONSE_BUSY) { + aq->dev_state = AP_DEV_STATE_ERROR; + aq->last_err_rc = status.response_code; + AP_DBF_WARN("%s RC 0x%02x 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; + } + + /* check bs bits */ + switch (info.bs) { + case AP_BS_Q_USABLE: + /* association is through */ + aq->sm_state = AP_SM_STATE_IDLE; + AP_DBF_DBG("%s queue 0x%02x.%04x associated with %u\n", + __func__, AP_QID_CARD(aq->qid), + AP_QID_QUEUE(aq->qid), aq->assoc_idx); + return AP_SM_WAIT_NONE; + case AP_BS_Q_USABLE_NO_SECURE_KEY: + /* association still pending */ + return AP_SM_WAIT_LOW_TIMEOUT; + default: + /* reset from 'outside' happened or no idea at all */ + aq->assoc_idx = ASSOC_IDX_INVALID; + aq->dev_state = AP_DEV_STATE_ERROR; + aq->last_err_rc = status.response_code; + AP_DBF_WARN("%s bs 0x%02x on 0x%02x.%04x -> AP_DEV_STATE_ERROR\n", + __func__, info.bs, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return AP_SM_WAIT_NONE; + } +} + /* * AP state machine jump table */ @@ -451,6 +532,10 @@ static ap_func_t *ap_jumptable[NR_AP_SM_STATES][NR_AP_SM_EVENTS] = { [AP_SM_EVENT_POLL] = ap_sm_read, [AP_SM_EVENT_TIMEOUT] = ap_sm_reset, }, + [AP_SM_STATE_ASSOC_WAIT] = { + [AP_SM_EVENT_POLL] = ap_sm_assoc_wait, + [AP_SM_EVENT_TIMEOUT] = ap_sm_reset, + }, }; enum ap_sm_wait ap_sm_event(struct ap_queue *aq, enum ap_sm_event event) @@ -490,9 +575,9 @@ static ssize_t request_count_show(struct device *dev, spin_unlock_bh(&aq->lock); if (valid) - return scnprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); + return sysfs_emit(buf, "%llu\n", req_cnt); else - return scnprintf(buf, PAGE_SIZE, "-\n"); + return sysfs_emit(buf, "-\n"); } static ssize_t request_count_store(struct device *dev, @@ -520,7 +605,7 @@ static ssize_t requestq_count_show(struct device *dev, if (aq->dev_state > AP_DEV_STATE_UNINITIATED) reqq_cnt = aq->requestq_count; spin_unlock_bh(&aq->lock); - return scnprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); + return sysfs_emit(buf, "%d\n", reqq_cnt); } static DEVICE_ATTR_RO(requestq_count); @@ -535,7 +620,7 @@ static ssize_t pendingq_count_show(struct device *dev, if (aq->dev_state > AP_DEV_STATE_UNINITIATED) penq_cnt = aq->pendingq_count; spin_unlock_bh(&aq->lock); - return scnprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); + return sysfs_emit(buf, "%d\n", penq_cnt); } static DEVICE_ATTR_RO(pendingq_count); @@ -550,14 +635,14 @@ static ssize_t reset_show(struct device *dev, switch (aq->sm_state) { case AP_SM_STATE_RESET_START: case AP_SM_STATE_RESET_WAIT: - rc = scnprintf(buf, PAGE_SIZE, "Reset in progress.\n"); + rc = sysfs_emit(buf, "Reset in progress.\n"); break; case AP_SM_STATE_WORKING: case AP_SM_STATE_QUEUE_FULL: - rc = scnprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); + rc = sysfs_emit(buf, "Reset Timer armed.\n"); break; default: - rc = scnprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); + rc = sysfs_emit(buf, "No Reset Timer set.\n"); } spin_unlock_bh(&aq->lock); return rc; @@ -591,11 +676,11 @@ static ssize_t interrupt_show(struct device *dev, spin_lock_bh(&aq->lock); if (aq->sm_state == AP_SM_STATE_SETIRQ_WAIT) - rc = scnprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); + rc = sysfs_emit(buf, "Enable Interrupt pending.\n"); else if (aq->interrupt) - rc = scnprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); + rc = sysfs_emit(buf, "Interrupts enabled.\n"); else - rc = scnprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); + rc = sysfs_emit(buf, "Interrupts disabled.\n"); spin_unlock_bh(&aq->lock); return rc; } @@ -609,7 +694,7 @@ static ssize_t config_show(struct device *dev, int rc; spin_lock_bh(&aq->lock); - rc = scnprintf(buf, PAGE_SIZE, "%d\n", aq->config ? 1 : 0); + rc = sysfs_emit(buf, "%d\n", aq->config ? 1 : 0); spin_unlock_bh(&aq->lock); return rc; } @@ -623,13 +708,33 @@ static ssize_t chkstop_show(struct device *dev, int rc; spin_lock_bh(&aq->lock); - rc = scnprintf(buf, PAGE_SIZE, "%d\n", aq->chkstop ? 1 : 0); + rc = sysfs_emit(buf, "%d\n", aq->chkstop ? 1 : 0); spin_unlock_bh(&aq->lock); return rc; } static DEVICE_ATTR_RO(chkstop); +static ssize_t ap_functions_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + struct ap_tapq_gr2 info; + + status = ap_test_queue(aq->qid, 1, &info); + if (status.response_code > AP_RESPONSE_BUSY) { + AP_DBF_DBG("%s RC 0x%02x on tapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return -EIO; + } + + return sysfs_emit(buf, "0x%08X\n", info.fac); +} + +static DEVICE_ATTR_RO(ap_functions); + #ifdef CONFIG_ZCRYPT_DEBUG static ssize_t states_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -641,50 +746,46 @@ static ssize_t states_show(struct device *dev, /* queue device state */ switch (aq->dev_state) { case AP_DEV_STATE_UNINITIATED: - rc = scnprintf(buf, PAGE_SIZE, "UNINITIATED\n"); + rc = sysfs_emit(buf, "UNINITIATED\n"); break; case AP_DEV_STATE_OPERATING: - rc = scnprintf(buf, PAGE_SIZE, "OPERATING"); + rc = sysfs_emit(buf, "OPERATING"); break; case AP_DEV_STATE_SHUTDOWN: - rc = scnprintf(buf, PAGE_SIZE, "SHUTDOWN"); + rc = sysfs_emit(buf, "SHUTDOWN"); break; case AP_DEV_STATE_ERROR: - rc = scnprintf(buf, PAGE_SIZE, "ERROR"); + rc = sysfs_emit(buf, "ERROR"); break; default: - rc = scnprintf(buf, PAGE_SIZE, "UNKNOWN"); + rc = sysfs_emit(buf, "UNKNOWN"); } /* state machine state */ if (aq->dev_state) { switch (aq->sm_state) { case AP_SM_STATE_RESET_START: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [RESET_START]\n"); + rc += sysfs_emit_at(buf, rc, " [RESET_START]\n"); break; case AP_SM_STATE_RESET_WAIT: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [RESET_WAIT]\n"); + rc += sysfs_emit_at(buf, rc, " [RESET_WAIT]\n"); break; case AP_SM_STATE_SETIRQ_WAIT: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [SETIRQ_WAIT]\n"); + rc += sysfs_emit_at(buf, rc, " [SETIRQ_WAIT]\n"); break; case AP_SM_STATE_IDLE: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [IDLE]\n"); + rc += sysfs_emit_at(buf, rc, " [IDLE]\n"); break; case AP_SM_STATE_WORKING: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [WORKING]\n"); + rc += sysfs_emit_at(buf, rc, " [WORKING]\n"); break; case AP_SM_STATE_QUEUE_FULL: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [FULL]\n"); + rc += sysfs_emit_at(buf, rc, " [FULL]\n"); + break; + case AP_SM_STATE_ASSOC_WAIT: + rc += sysfs_emit_at(buf, rc, " [ASSOC_WAIT]\n"); break; default: - rc += scnprintf(buf + rc, PAGE_SIZE - rc, - " [UNKNOWN]\n"); + rc += sysfs_emit_at(buf, rc, " [UNKNOWN]\n"); } } spin_unlock_bh(&aq->lock); @@ -705,33 +806,33 @@ static ssize_t last_err_rc_show(struct device *dev, switch (rc) { case AP_RESPONSE_NORMAL: - return scnprintf(buf, PAGE_SIZE, "NORMAL\n"); + return sysfs_emit(buf, "NORMAL\n"); case AP_RESPONSE_Q_NOT_AVAIL: - return scnprintf(buf, PAGE_SIZE, "Q_NOT_AVAIL\n"); + return sysfs_emit(buf, "Q_NOT_AVAIL\n"); case AP_RESPONSE_RESET_IN_PROGRESS: - return scnprintf(buf, PAGE_SIZE, "RESET_IN_PROGRESS\n"); + return sysfs_emit(buf, "RESET_IN_PROGRESS\n"); case AP_RESPONSE_DECONFIGURED: - return scnprintf(buf, PAGE_SIZE, "DECONFIGURED\n"); + return sysfs_emit(buf, "DECONFIGURED\n"); case AP_RESPONSE_CHECKSTOPPED: - return scnprintf(buf, PAGE_SIZE, "CHECKSTOPPED\n"); + return sysfs_emit(buf, "CHECKSTOPPED\n"); case AP_RESPONSE_BUSY: - return scnprintf(buf, PAGE_SIZE, "BUSY\n"); + return sysfs_emit(buf, "BUSY\n"); case AP_RESPONSE_INVALID_ADDRESS: - return scnprintf(buf, PAGE_SIZE, "INVALID_ADDRESS\n"); + return sysfs_emit(buf, "INVALID_ADDRESS\n"); case AP_RESPONSE_OTHERWISE_CHANGED: - return scnprintf(buf, PAGE_SIZE, "OTHERWISE_CHANGED\n"); + return sysfs_emit(buf, "OTHERWISE_CHANGED\n"); case AP_RESPONSE_Q_FULL: - return scnprintf(buf, PAGE_SIZE, "Q_FULL/NO_PENDING_REPLY\n"); + return sysfs_emit(buf, "Q_FULL/NO_PENDING_REPLY\n"); case AP_RESPONSE_INDEX_TOO_BIG: - return scnprintf(buf, PAGE_SIZE, "INDEX_TOO_BIG\n"); + return sysfs_emit(buf, "INDEX_TOO_BIG\n"); case AP_RESPONSE_NO_FIRST_PART: - return scnprintf(buf, PAGE_SIZE, "NO_FIRST_PART\n"); + return sysfs_emit(buf, "NO_FIRST_PART\n"); case AP_RESPONSE_MESSAGE_TOO_BIG: - return scnprintf(buf, PAGE_SIZE, "MESSAGE_TOO_BIG\n"); + return sysfs_emit(buf, "MESSAGE_TOO_BIG\n"); case AP_RESPONSE_REQ_FAC_NOT_INST: - return scnprintf(buf, PAGE_SIZE, "REQ_FAC_NOT_INST\n"); + return sysfs_emit(buf, "REQ_FAC_NOT_INST\n"); default: - return scnprintf(buf, PAGE_SIZE, "response code %d\n", rc); + return sysfs_emit(buf, "response code %d\n", rc); } } static DEVICE_ATTR_RO(last_err_rc); @@ -745,6 +846,7 @@ static struct attribute *ap_queue_dev_attrs[] = { &dev_attr_interrupt.attr, &dev_attr_config.attr, &dev_attr_chkstop.attr, + &dev_attr_ap_functions.attr, #ifdef CONFIG_ZCRYPT_DEBUG &dev_attr_states.attr, &dev_attr_last_err_rc.attr, @@ -766,6 +868,186 @@ static struct device_type ap_queue_type = { .groups = ap_queue_dev_attr_groups, }; +static ssize_t se_bind_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + struct ap_tapq_gr2 info; + + if (!ap_q_supports_bind(aq)) + return sysfs_emit(buf, "-\n"); + + status = ap_test_queue(aq->qid, 1, &info); + if (status.response_code > AP_RESPONSE_BUSY) { + AP_DBF_DBG("%s RC 0x%02x on tapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return -EIO; + } + switch (info.bs) { + case AP_BS_Q_USABLE: + case AP_BS_Q_USABLE_NO_SECURE_KEY: + return sysfs_emit(buf, "bound\n"); + default: + return sysfs_emit(buf, "unbound\n"); + } +} + +static ssize_t se_bind_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + bool value; + int rc; + + if (!ap_q_supports_bind(aq)) + return -EINVAL; + + /* only 0 (unbind) and 1 (bind) allowed */ + rc = kstrtobool(buf, &value); + if (rc) + return rc; + + if (value) { + /* bind, do BAPQ */ + spin_lock_bh(&aq->lock); + if (aq->sm_state < AP_SM_STATE_IDLE) { + spin_unlock_bh(&aq->lock); + return -EBUSY; + } + status = ap_bapq(aq->qid); + spin_unlock_bh(&aq->lock); + if (status.response_code) { + AP_DBF_WARN("%s RC 0x%02x on bapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), + AP_QID_QUEUE(aq->qid)); + return -EIO; + } + } else { + /* unbind, set F bit arg and trigger RAPQ */ + spin_lock_bh(&aq->lock); + __ap_flush_queue(aq); + aq->rapq_fbit = 1; + aq->assoc_idx = ASSOC_IDX_INVALID; + aq->sm_state = AP_SM_STATE_RESET_START; + ap_wait(ap_sm_event(aq, AP_SM_EVENT_POLL)); + spin_unlock_bh(&aq->lock); + } + + return count; +} + +static DEVICE_ATTR_RW(se_bind); + +static ssize_t se_associate_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + struct ap_tapq_gr2 info; + + if (!ap_q_supports_assoc(aq)) + return sysfs_emit(buf, "-\n"); + + status = ap_test_queue(aq->qid, 1, &info); + if (status.response_code > AP_RESPONSE_BUSY) { + AP_DBF_DBG("%s RC 0x%02x on tapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return -EIO; + } + + switch (info.bs) { + case AP_BS_Q_USABLE: + if (aq->assoc_idx == ASSOC_IDX_INVALID) { + AP_DBF_WARN("%s AP_BS_Q_USABLE but invalid assoc_idx\n", __func__); + return -EIO; + } + return sysfs_emit(buf, "associated %u\n", aq->assoc_idx); + case AP_BS_Q_USABLE_NO_SECURE_KEY: + if (aq->assoc_idx != ASSOC_IDX_INVALID) + return sysfs_emit(buf, "association pending\n"); + fallthrough; + default: + return sysfs_emit(buf, "unassociated\n"); + } +} + +static ssize_t se_associate_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + unsigned int value; + int rc; + + if (!ap_q_supports_assoc(aq)) + return -EINVAL; + + /* association index needs to be >= 0 */ + rc = kstrtouint(buf, 0, &value); + if (rc) + return rc; + if (value >= ASSOC_IDX_INVALID) + return -EINVAL; + + spin_lock_bh(&aq->lock); + + /* sm should be in idle state */ + if (aq->sm_state != AP_SM_STATE_IDLE) { + spin_unlock_bh(&aq->lock); + return -EBUSY; + } + + /* already associated or association pending ? */ + if (aq->assoc_idx != ASSOC_IDX_INVALID) { + spin_unlock_bh(&aq->lock); + return -EINVAL; + } + + /* trigger the asynchronous association request */ + status = ap_aapq(aq->qid, value); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + case AP_RESPONSE_STATE_CHANGE_IN_PROGRESS: + aq->sm_state = AP_SM_STATE_ASSOC_WAIT; + aq->assoc_idx = value; + ap_wait(ap_sm_event(aq, AP_SM_EVENT_POLL)); + spin_unlock_bh(&aq->lock); + break; + default: + spin_unlock_bh(&aq->lock); + AP_DBF_WARN("%s RC 0x%02x on aapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return -EIO; + } + + return count; +} + +static DEVICE_ATTR_RW(se_associate); + +static struct attribute *ap_queue_dev_sb_attrs[] = { + &dev_attr_se_bind.attr, + &dev_attr_se_associate.attr, + NULL +}; + +static struct attribute_group ap_queue_dev_sb_attr_group = { + .attrs = ap_queue_dev_sb_attrs +}; + +static const struct attribute_group *ap_queue_dev_sb_attr_groups[] = { + &ap_queue_dev_sb_attr_group, + NULL +}; + static void ap_queue_device_release(struct device *dev) { struct ap_queue *aq = to_ap_queue(dev); @@ -787,6 +1069,9 @@ struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type) aq->ap_dev.device.release = ap_queue_device_release; aq->ap_dev.device.type = &ap_queue_type; aq->ap_dev.device_type = device_type; + // add optional SE secure binding attributes group + if (ap_sb_available() && is_prot_virt_guest()) + aq->ap_dev.device.groups = ap_queue_dev_sb_attr_groups; aq->qid = qid; aq->interrupt = false; spin_lock_init(&aq->lock); @@ -922,7 +1207,7 @@ void ap_queue_remove(struct ap_queue *aq) * to the initial value AP_DEV_STATE_UNINITIATED. */ spin_lock_bh(&aq->lock); - ap_zapq(aq->qid); + ap_zapq(aq->qid, 0); aq->dev_state = AP_DEV_STATE_UNINITIATED; spin_unlock_bh(&aq->lock); } @@ -933,6 +1218,7 @@ void ap_queue_init_state(struct ap_queue *aq) aq->dev_state = AP_DEV_STATE_OPERATING; aq->sm_state = AP_SM_STATE_RESET_START; aq->last_err_rc = 0; + aq->assoc_idx = ASSOC_IDX_INVALID; ap_wait(ap_sm_event(aq, AP_SM_EVENT_POLL)); spin_unlock_bh(&aq->lock); } |