diff options
| -rw-r--r-- | drivers/s390/crypto/Makefile | 5 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 1089 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 94 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_card.c | 172 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 700 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 929 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.h | 84 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_card.c | 181 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_cex2a.c | 212 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_cex4.c | 317 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_error.h | 38 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_msgtype50.c | 90 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_msgtype6.c | 253 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_msgtype6.h | 12 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_pcixcc.c | 358 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_queue.c | 221 | ||||
| -rw-r--r-- | include/linux/mod_devicetable.h | 3 |
17 files changed, 2768 insertions, 1990 deletions
diff --git a/drivers/s390/crypto/Makefile b/drivers/s390/crypto/Makefile index d0549fc87247..0a7fb83f35e5 100644 --- a/drivers/s390/crypto/Makefile +++ b/drivers/s390/crypto/Makefile @@ -2,10 +2,11 @@ # S/390 crypto devices # -ap-objs := ap_bus.o +ap-objs := ap_bus.o ap_card.o ap_queue.o obj-$(subst m,y,$(CONFIG_ZCRYPT)) += ap.o # zcrypt_api.o and zcrypt_msgtype*.o depend on ap.o -zcrypt-objs := zcrypt_api.o zcrypt_msgtype6.o zcrypt_msgtype50.o +zcrypt-objs := zcrypt_api.o zcrypt_card.o zcrypt_queue.o +zcrypt-objs += zcrypt_msgtype6.o zcrypt_msgtype50.o obj-$(CONFIG_ZCRYPT) += zcrypt.o # adapter drivers depend on ap.o and zcrypt.o obj-$(CONFIG_ZCRYPT) += zcrypt_pcixcc.o zcrypt_cex2a.o zcrypt_cex4.o diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index fe1cfa4b22c9..ac6c258300cf 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -46,6 +46,7 @@ #include <linux/ktime.h> #include <asm/facility.h> #include <linux/crypto.h> +#include <linux/mod_devicetable.h> #include "ap_bus.h" #include "ap_asm.h" @@ -72,10 +73,12 @@ static int ap_thread_flag = 0; module_param_named(poll_thread, ap_thread_flag, int, S_IRUSR|S_IRGRP); MODULE_PARM_DESC(poll_thread, "Turn on/off poll thread, default is 0 (off)."); -static struct device *ap_root_device = NULL; +static struct device *ap_root_device; + +DEFINE_SPINLOCK(ap_list_lock); +LIST_HEAD(ap_card_list); + static struct ap_config_info *ap_configuration; -static DEFINE_SPINLOCK(ap_device_list_lock); -static LIST_HEAD(ap_device_list); static bool initialised; /* @@ -130,6 +133,20 @@ static inline int ap_using_interrupts(void) } /** + * ap_airq_ptr() - Get the address of the adapter interrupt indicator + * + * Returns the address of the local-summary-indicator of the adapter + * interrupt handler for AP, or NULL if adapter interrupts are not + * available. + */ +void *ap_airq_ptr(void) +{ + if (ap_using_interrupts()) + return ap_airq.lsi_ptr; + return NULL; +} + +/** * ap_interrupts_available(): Test if AP interrupts are available. * * Returns 1 if AP interrupts are available. @@ -230,101 +247,6 @@ static inline int ap_test_config_domain(unsigned int domain) } /** - * ap_queue_enable_interruption(): Enable interruption on an AP. - * @qid: The AP queue number - * @ind: the notification indicator byte - * - * Enables interruption on AP queue via ap_aqic(). Based on the return - * value it waits a while and tests the AP queue if interrupts - * have been switched on using ap_test_queue(). - */ -static int ap_queue_enable_interruption(struct ap_device *ap_dev, void *ind) -{ - struct ap_queue_status status; - - status = ap_aqic(ap_dev->qid, ind); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - case AP_RESPONSE_OTHERWISE_CHANGED: - return 0; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - case AP_RESPONSE_INVALID_ADDRESS: - pr_err("Registering adapter interrupts for AP %d failed\n", - AP_QID_DEVICE(ap_dev->qid)); - return -EOPNOTSUPP; - case AP_RESPONSE_RESET_IN_PROGRESS: - case AP_RESPONSE_BUSY: - default: - return -EBUSY; - } -} - -/** - * __ap_send(): Send message to adjunct processor queue. - * @qid: The AP queue number - * @psmid: The program supplied message identifier - * @msg: The message text - * @length: The message length - * @special: Special Bit - * - * Returns AP queue status structure. - * Condition code 1 on NQAP can't happen because the L bit is 1. - * Condition code 2 on NQAP also means the send is incomplete, - * 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, - unsigned int special) -{ - if (special == 1) - qid |= 0x400000UL; - return ap_nqap(qid, psmid, msg, length); -} - -int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) -{ - struct ap_queue_status status; - - status = __ap_send(qid, psmid, msg, length, 0); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - return 0; - case AP_RESPONSE_Q_FULL: - case AP_RESPONSE_RESET_IN_PROGRESS: - return -EBUSY; - case AP_RESPONSE_REQ_FAC_NOT_INST: - return -EINVAL; - default: /* Device is gone. */ - return -ENODEV; - } -} -EXPORT_SYMBOL(ap_send); - -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_dqap(qid, psmid, msg, length); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - return 0; - case AP_RESPONSE_NO_PENDING_REPLY: - if (status.queue_empty) - return -ENOENT; - return -EBUSY; - case AP_RESPONSE_RESET_IN_PROGRESS: - return -EBUSY; - default: - return -ENODEV; - } -} -EXPORT_SYMBOL(ap_recv); - -/** * ap_query_queue(): Check if an AP queue is available. * @qid: The AP queue number * @queue_depth: Pointer to queue depth value @@ -338,7 +260,7 @@ static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type, unsigned long info; int nd; - if (!ap_test_config_card_id(AP_QID_DEVICE(qid))) + if (!ap_test_config_card_id(AP_QID_CARD(qid))) return -ENODEV; status = ap_test_queue(qid, &info); @@ -366,9 +288,7 @@ static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type, } } -/* State machine definitions and helpers */ - -static void ap_sm_wait(enum ap_wait wait) +void ap_wait(enum ap_wait wait) { ktime_t hr_time; @@ -397,347 +317,21 @@ static void ap_sm_wait(enum ap_wait wait) } } -static enum ap_wait ap_sm_nop(struct ap_device *ap_dev) -{ - return AP_WAIT_NONE; -} - -/** - * ap_sm_recv(): Receive pending reply messages from an AP device but do - * not change the state of the device. - * @ap_dev: pointer to the AP device - * - * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT - */ -static struct ap_queue_status ap_sm_recv(struct ap_device *ap_dev) -{ - struct ap_queue_status status; - struct ap_message *ap_msg; - - status = ap_dqap(ap_dev->qid, &ap_dev->reply->psmid, - ap_dev->reply->message, ap_dev->reply->length); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - ap_dev->queue_count--; - if (ap_dev->queue_count > 0) - mod_timer(&ap_dev->timeout, - jiffies + ap_dev->drv->request_timeout); - list_for_each_entry(ap_msg, &ap_dev->pendingq, list) { - if (ap_msg->psmid != ap_dev->reply->psmid) - continue; - list_del_init(&ap_msg->list); - ap_dev->pendingq_count--; - ap_msg->receive(ap_dev, ap_msg, ap_dev->reply); - break; - } - case AP_RESPONSE_NO_PENDING_REPLY: - if (!status.queue_empty || ap_dev->queue_count <= 0) - break; - /* The card shouldn't forget requests but who knows. */ - ap_dev->queue_count = 0; - list_splice_init(&ap_dev->pendingq, &ap_dev->requestq); - ap_dev->requestq_count += ap_dev->pendingq_count; - ap_dev->pendingq_count = 0; - break; - default: - break; - } - return status; -} - -/** - * ap_sm_read(): Receive pending reply messages from an AP device. - * @ap_dev: pointer to the AP device - * - * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT - */ -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: - if (ap_dev->queue_count > 0) { - ap_dev->state = AP_STATE_WORKING; - return AP_WAIT_AGAIN; - } - ap_dev->state = AP_STATE_IDLE; - return AP_WAIT_NONE; - case AP_RESPONSE_NO_PENDING_REPLY: - if (ap_dev->queue_count > 0) - return AP_WAIT_INTERRUPT; - ap_dev->state = AP_STATE_IDLE; - return AP_WAIT_NONE; - default: - ap_dev->state = AP_STATE_BORKED; - return AP_WAIT_NONE; - } -} - -/** - * 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 - * - * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT - */ -static enum ap_wait ap_sm_write(struct ap_device *ap_dev) -{ - struct ap_queue_status status; - struct ap_message *ap_msg; - - if (ap_dev->requestq_count <= 0) - return AP_WAIT_NONE; - /* Start the next request on the queue. */ - ap_msg = list_entry(ap_dev->requestq.next, struct ap_message, list); - status = __ap_send(ap_dev->qid, ap_msg->psmid, - ap_msg->message, ap_msg->length, ap_msg->special); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - ap_dev->queue_count++; - if (ap_dev->queue_count == 1) - mod_timer(&ap_dev->timeout, - jiffies + ap_dev->drv->request_timeout); - list_move_tail(&ap_msg->list, &ap_dev->pendingq); - ap_dev->requestq_count--; - ap_dev->pendingq_count++; - if (ap_dev->queue_count < ap_dev->queue_depth) { - ap_dev->state = AP_STATE_WORKING; - return AP_WAIT_AGAIN; - } - /* fall through */ - case AP_RESPONSE_Q_FULL: - ap_dev->state = AP_STATE_QUEUE_FULL; - return AP_WAIT_INTERRUPT; - case AP_RESPONSE_RESET_IN_PROGRESS: - ap_dev->state = AP_STATE_RESET_WAIT; - return AP_WAIT_TIMEOUT; - case AP_RESPONSE_MESSAGE_TOO_BIG: - case AP_RESPONSE_REQ_FAC_NOT_INST: - list_del_init(&ap_msg->list); - ap_dev->requestq_count--; - ap_msg->rc = -EINVAL; - ap_msg->receive(ap_dev, ap_msg, NULL); - return AP_WAIT_AGAIN; - default: - ap_dev->state = AP_STATE_BORKED; - return AP_WAIT_NONE; - } -} - -/** - * ap_sm_read_write(): Send and receive messages to/from an AP device. - * @ap_dev: pointer to the AP device - * - * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT - */ -static enum ap_wait ap_sm_read_write(struct ap_device *ap_dev) -{ - return min(ap_sm_read(ap_dev), ap_sm_write(ap_dev)); -} - -/** - * ap_sm_reset(): Reset an AP queue. - * @qid: The AP queue number - * - * Submit the Reset command to an AP queue. - */ -static enum ap_wait ap_sm_reset(struct ap_device *ap_dev) -{ - struct ap_queue_status status; - - status = ap_rapq(ap_dev->qid); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - case AP_RESPONSE_RESET_IN_PROGRESS: - ap_dev->state = AP_STATE_RESET_WAIT; - ap_dev->interrupt = AP_INTR_DISABLED; - return AP_WAIT_TIMEOUT; - case AP_RESPONSE_BUSY: - return AP_WAIT_TIMEOUT; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - default: - ap_dev->state = AP_STATE_BORKED; - return AP_WAIT_NONE; - } -} - -/** - * ap_sm_reset_wait(): Test queue for completion of the reset operation - * @ap_dev: pointer to the AP device - * - * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. - */ -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 && ap_dev->reply) - /* Try to read a completed message and get the status */ - status = ap_sm_recv(ap_dev); - else - /* Get the status with TAPQ */ - status = ap_test_queue(ap_dev->qid, &info); - - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - if (ap_using_interrupts() && - ap_queue_enable_interruption(ap_dev, - ap_airq.lsi_ptr) == 0) - ap_dev->state = AP_STATE_SETIRQ_WAIT; - else - ap_dev->state = (ap_dev->queue_count > 0) ? - AP_STATE_WORKING : AP_STATE_IDLE; - return AP_WAIT_AGAIN; - case AP_RESPONSE_BUSY: - case AP_RESPONSE_RESET_IN_PROGRESS: - return AP_WAIT_TIMEOUT; - case AP_RESPONSE_Q_NOT_AVAIL: - case AP_RESPONSE_DECONFIGURED: - case AP_RESPONSE_CHECKSTOPPED: - default: - ap_dev->state = AP_STATE_BORKED; - return AP_WAIT_NONE; - } -} - -/** - * ap_sm_setirq_wait(): Test queue for completion of the irq enablement - * @ap_dev: pointer to the AP device - * - * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. - */ -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 && ap_dev->reply) - /* Try to read a completed message and get the status */ - status = ap_sm_recv(ap_dev); - else - /* Get the status with TAPQ */ - status = ap_test_queue(ap_dev->qid, &info); - - if (status.int_enabled == 1) { - /* Irqs are now enabled */ - ap_dev->interrupt = AP_INTR_ENABLED; - ap_dev->state = (ap_dev->queue_count > 0) ? - AP_STATE_WORKING : AP_STATE_IDLE; - } - - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - if (ap_dev->queue_count > 0) - return AP_WAIT_AGAIN; - /* fallthrough */ - case AP_RESPONSE_NO_PENDING_REPLY: - return AP_WAIT_TIMEOUT; - default: - ap_dev->state = AP_STATE_BORKED; - return AP_WAIT_NONE; - } -} - -/* - * AP state machine jump table - */ -static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { - [AP_STATE_RESET_START] = { - [AP_EVENT_POLL] = ap_sm_reset, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, - [AP_STATE_RESET_WAIT] = { - [AP_EVENT_POLL] = ap_sm_reset_wait, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, - [AP_STATE_SETIRQ_WAIT] = { - [AP_EVENT_POLL] = ap_sm_setirq_wait, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, - [AP_STATE_IDLE] = { - [AP_EVENT_POLL] = ap_sm_write, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, - [AP_STATE_WORKING] = { - [AP_EVENT_POLL] = ap_sm_read_write, - [AP_EVENT_TIMEOUT] = ap_sm_reset, - }, - [AP_STATE_QUEUE_FULL] = { - [AP_EVENT_POLL] = ap_sm_read, - [AP_EVENT_TIMEOUT] = ap_sm_reset, - }, - [AP_STATE_SUSPEND_WAIT] = { - [AP_EVENT_POLL] = ap_sm_suspend_read, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, - [AP_STATE_BORKED] = { - [AP_EVENT_POLL] = ap_sm_nop, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, -}; - -static inline enum ap_wait ap_sm_event(struct ap_device *ap_dev, - enum ap_event event) -{ - return ap_jumptable[ap_dev->state][event](ap_dev); -} - -static inline enum ap_wait ap_sm_event_loop(struct ap_device *ap_dev, - enum ap_event event) -{ - enum ap_wait wait; - - while ((wait = ap_sm_event(ap_dev, event)) == AP_WAIT_AGAIN) - ; - return wait; -} - /** * ap_request_timeout(): Handling of request timeouts * @data: Holds the AP device. * * Handles request timeouts. */ -static void ap_request_timeout(unsigned long data) +void ap_request_timeout(unsigned long data) { - struct ap_device *ap_dev = (struct ap_device *) data; + struct ap_queue *aq = (struct ap_queue *) data; if (ap_suspend_flag) return; - spin_lock_bh(&ap_dev->lock); - ap_sm_wait(ap_sm_event(ap_dev, AP_EVENT_TIMEOUT)); - spin_unlock_bh(&ap_dev->lock); + spin_lock_bh(&aq->lock); + ap_wait(ap_sm_event(aq, AP_EVENT_TIMEOUT)); + spin_unlock_bh(&aq->lock); } /** @@ -772,7 +366,8 @@ static void ap_interrupt_handler(struct airq_struct *airq) */ static void ap_tasklet_fn(unsigned long dummy) { - struct ap_device *ap_dev; + struct ap_card *ac; + struct ap_queue *aq; enum ap_wait wait = AP_WAIT_NONE; /* Reset the indicator if interrupts are used. Thus new interrupts can @@ -782,35 +377,35 @@ static void ap_tasklet_fn(unsigned long dummy) if (ap_using_interrupts()) xchg(ap_airq.lsi_ptr, 0); - spin_lock(&ap_device_list_lock); - list_for_each_entry(ap_dev, &ap_device_list, list) { - spin_lock_bh(&ap_dev->lock); - wait = min(wait, ap_sm_event_loop(ap_dev, AP_EVENT_POLL)); - spin_unlock_bh(&ap_dev->lock); + spin_lock_bh(&ap_list_lock); + for_each_ap_card(ac) { + for_each_ap_queue(aq, ac) { + spin_lock_bh(&aq->lock); + wait = min(wait, ap_sm_event_loop(aq, AP_EVENT_POLL)); + spin_unlock_bh(&aq->lock); + } } - spin_unlock(&ap_device_list_lock); - ap_sm_wait(wait); + spin_unlock_bh(&ap_list_lock); + + ap_wait(wait); } static int ap_pending_requests(void) { - struct ap_device *ap_dev; - int id, pending = 0; - - for (id = 0; pending == 0 && id < AP_DEVICES; id++) { - spin_lock_bh(&ap_device_list_lock); - list_for_each_entry(ap_dev, &ap_device_list, list) { - spin_lock_bh(&ap_dev->lock); - if (ap_dev->queue_count) - pending = 1; - spin_unlock_bh(&ap_dev->lock); - if (pending) - break; + struct ap_card *ac; + struct ap_queue *aq; + + spin_lock_bh(&ap_list_lock); + for_each_ap_card(ac) { + for_each_ap_queue(aq, ac) { + if (aq->queue_count == 0) + continue; + spin_unlock_bh(&ap_list_lock); + return 1; } - spin_unlock_bh(&ap_device_list_lock); } - - return pending; + spin_unlock_bh(&ap_list_lock); + return 0; } /** @@ -874,207 +469,8 @@ static void ap_poll_thread_stop(void) mutex_unlock(&ap_poll_thread_mutex); } -/** - * ap_queue_message(): Queue a request to an AP device. - * @ap_dev: The AP device to queue the message to - * @ap_msg: The message that is to be added - */ -void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg) -{ - /* For asynchronous message handling a valid receive-callback - * is required. */ - BUG_ON(!ap_msg->receive); - - spin_lock_bh(&ap_dev->lock); - /* Queue the message. */ - list_add_tail(&ap_msg->list, &ap_dev->requestq); - ap_dev->requestq_count++; - ap_dev->total_request_count++; - /* Send/receive as many request from the queue as possible. */ - ap_sm_wait(ap_sm_event_loop(ap_dev, AP_EVENT_POLL)); - spin_unlock_bh(&ap_dev->lock); -} -EXPORT_SYMBOL(ap_queue_message); - -/** - * ap_cancel_message(): Cancel a crypto request. - * @ap_dev: The AP device that has the message queued - * @ap_msg: The message that is to be removed - * - * Cancel a crypto request. This is done by removing the request - * from the device pending or request queue. Note that the - * request stays on the AP queue. When it finishes the message - * reply will be discarded because the psmid can't be found. - */ -void ap_cancel_message(struct ap_device *ap_dev, struct ap_message *ap_msg) -{ - struct ap_message *tmp; - - spin_lock_bh(&ap_dev->lock); - if (!list_empty(&ap_msg->list)) { - list_for_each_entry(tmp, &ap_dev->pendingq, list) - if (tmp->psmid == ap_msg->psmid) { - ap_dev->pendingq_count--; - goto found; - } - ap_dev->requestq_count--; -found: - list_del_init(&ap_msg->list); - } - spin_unlock_bh(&ap_dev->lock); -} -EXPORT_SYMBOL(ap_cancel_message); - -/* - * AP device related attributes. - */ -static ssize_t ap_hwtype_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->device_type); -} - -static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL); - -static ssize_t ap_raw_hwtype_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - - return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->raw_hwtype); -} - -static DEVICE_ATTR(raw_hwtype, 0444, ap_raw_hwtype_show, NULL); - -static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->queue_depth); -} - -static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL); -static ssize_t ap_request_count_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - int rc; - - spin_lock_bh(&ap_dev->lock); - rc = snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->total_request_count); - spin_unlock_bh(&ap_dev->lock); - return rc; -} - -static DEVICE_ATTR(request_count, 0444, ap_request_count_show, NULL); - -static ssize_t ap_requestq_count_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - int rc; - - spin_lock_bh(&ap_dev->lock); - rc = snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->requestq_count); - spin_unlock_bh(&ap_dev->lock); - return rc; -} - -static DEVICE_ATTR(requestq_count, 0444, ap_requestq_count_show, NULL); - -static ssize_t ap_pendingq_count_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - int rc; - - spin_lock_bh(&ap_dev->lock); - rc = snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->pendingq_count); - spin_unlock_bh(&ap_dev->lock); - return rc; -} - -static DEVICE_ATTR(pendingq_count, 0444, ap_pendingq_count_show, NULL); - -static ssize_t ap_reset_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - int rc = 0; - - spin_lock_bh(&ap_dev->lock); - switch (ap_dev->state) { - case AP_STATE_RESET_START: - case AP_STATE_RESET_WAIT: - rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); - break; - case AP_STATE_WORKING: - case AP_STATE_QUEUE_FULL: - rc = snprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); - break; - default: - rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); - } - spin_unlock_bh(&ap_dev->lock); - return rc; -} - -static DEVICE_ATTR(reset, 0444, ap_reset_show, NULL); - -static ssize_t ap_interrupt_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - int rc = 0; - - spin_lock_bh(&ap_dev->lock); - if (ap_dev->state == AP_STATE_SETIRQ_WAIT) - rc = snprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); - else if (ap_dev->interrupt == AP_INTR_ENABLED) - rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); - else - rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); - spin_unlock_bh(&ap_dev->lock); - return rc; -} - -static DEVICE_ATTR(interrupt, 0444, ap_interrupt_show, NULL); - -static ssize_t ap_modalias_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "ap:t%02X\n", to_ap_dev(dev)->device_type); -} - -static DEVICE_ATTR(modalias, 0444, ap_modalias_show, NULL); - -static ssize_t ap_functions_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - return snprintf(buf, PAGE_SIZE, "0x%08X\n", ap_dev->functions); -} - -static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL); - -static struct attribute *ap_dev_attrs[] = { - &dev_attr_hwtype.attr, - &dev_attr_raw_hwtype.attr, - &dev_attr_depth.attr, - &dev_attr_request_count.attr, - &dev_attr_requestq_count.attr, - &dev_attr_pendingq_count.attr, - &dev_attr_reset.attr, - &dev_attr_interrupt.attr, - &dev_attr_modalias.attr, - &dev_attr_ap_functions.attr, - NULL -}; -static struct attribute_group ap_dev_attr_group = { - .attrs = ap_dev_attrs -}; +#define is_card_dev(x) ((x)->parent == ap_root_device) +#define is_queue_dev(x) ((x)->parent != ap_root_device) /** * ap_bus_match() @@ -1085,7 +481,6 @@ static struct attribute_group ap_dev_attr_group = { */ static int ap_bus_match(struct device *dev, struct device_driver *drv) { - struct ap_device *ap_dev = to_ap_dev(dev); struct ap_driver *ap_drv = to_ap_drv(drv); struct ap_device_id *id; @@ -1094,10 +489,14 @@ static int ap_bus_match(struct device *dev, struct device_driver *drv) * supported types of the device_driver. */ for (id = ap_drv->ids; id->match_flags; id++) { - if ((id->match_flags & AP_DEVICE_ID_MATCH_DEVICE_TYPE) && - (id->dev_type != ap_dev->device_type)) - continue; - return 1; + if (is_card_dev(dev) && + id->match_flags & AP_DEVICE_ID_MATCH_CARD_TYPE && + id->dev_type == to_ap_dev(dev)->device_type) + return 1; + if (is_queue_dev(dev) && + id->match_flags & AP_DEVICE_ID_MATCH_QUEUE_TYPE && + id->dev_type == to_ap_dev(dev)->device_type) + return 1; } return 0; } @@ -1133,13 +532,17 @@ static int ap_dev_suspend(struct device *dev) { struct ap_device *ap_dev = to_ap_dev(dev); - /* Poll on the device until all requests are finished. */ - spin_lock_bh(&ap_dev->lock); - ap_dev->state = AP_STATE_SUSPEND_WAIT; - while (ap_sm_event(ap_dev, AP_EVENT_POLL) != AP_WAIT_NONE) - ; - ap_dev->state = AP_STATE_BORKED; - spin_unlock_bh(&ap_dev->lock); + if (ap_dev->drv && ap_dev->drv->suspend) + ap_dev->drv->suspend(ap_dev); + return 0; +} + +static int ap_dev_resume(struct device *dev) +{ + struct ap_device *ap_dev = to_ap_dev(dev); + + if (ap_dev->drv && ap_dev->drv->resume) + ap_dev->drv->resume(ap_dev); return 0; } @@ -1154,9 +557,25 @@ static void ap_bus_suspend(void) tasklet_disable(&ap_tasklet); } -static int __ap_devices_unregister(struct device *dev, void *dummy) +static int __ap_card_devices_unregister(struct device *dev, void *dummy) +{ + if (is_card_dev(dev)) + device_unregister(dev); + return 0; +} + +static int __ap_queue_devices_unregister(struct device *dev, void *dummy) +{ + if (is_queue_dev(dev)) + device_unregister(dev); + return 0; +} + +static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data) { - device_unregister(dev); + if (is_queue_dev(dev) && + AP_QID_CARD(to_ap_queue(dev)->qid) == (int)(long) data) + device_unregister(dev); return 0; } @@ -1164,8 +583,13 @@ static void ap_bus_resume(void) { int rc; - /* Unconditionally remove all AP devices */ - bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_devices_unregister); + /* remove all queue devices */ + bus_for_each_dev(&ap_bus_type, NULL, NULL, + __ap_queue_devices_unregister); + /* remove all card devices */ + bus_for_each_dev(&ap_bus_type, NULL, NULL, + __ap_card_devices_unregister); + /* Reset thin interrupt setting */ if (ap_interrupts_available() && !ap_using_interrupts()) { rc = register_adapter_interrupt(&ap_airq); @@ -1207,7 +631,7 @@ static struct notifier_block ap_power_notifier = { .notifier_call = ap_power_event, }; -static SIMPLE_DEV_PM_OPS(ap_bus_pm_ops, ap_dev_suspend, NULL); +static SIMPLE_DEV_PM_OPS(ap_bus_pm_ops, ap_dev_suspend, ap_dev_resume); static struct bus_type ap_bus_type = { .name = "ap", @@ -1216,17 +640,6 @@ static struct bus_type ap_bus_type = { .pm = &ap_bus_pm_ops, }; -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); @@ -1240,58 +653,22 @@ static int ap_device_probe(struct device *dev) return rc; } -/** - * __ap_flush_queue(): Flush requests. - * @ap_dev: Pointer to the AP device - * - * Flush all requests from the request/pending queue of an AP device. - */ -static void __ap_flush_queue(struct ap_device *ap_dev) -{ - struct ap_message *ap_msg, *next; - - list_for_each_entry_safe(ap_msg, next, &ap_dev->pendingq, list) { - list_del_init(&ap_msg->list); - ap_dev->pendingq_count--; - ap_msg->rc = -EAGAIN; - ap_msg->receive(ap_dev, ap_msg, NULL); - } - list_for_each_entry_safe(ap_msg, next, &ap_dev->requestq, list) { - list_del_init(&ap_msg->list); - ap_dev->requestq_count--; - ap_msg->rc = -EAGAIN; - ap_msg->receive(ap_dev, ap_msg, NULL); - } -} - -void ap_flush_queue(struct ap_device *ap_dev) -{ - spin_lock_bh(&ap_dev->lock); - __ap_flush_queue(ap_dev); - spin_unlock_bh(&ap_dev->lock); -} -EXPORT_SYMBOL(ap_flush_queue); - static int ap_device_remove(struct device *dev) { struct ap_device *ap_dev = to_ap_dev(dev); struct ap_driver *ap_drv = ap_dev->drv; - ap_flush_queue(ap_dev); - del_timer_sync(&ap_dev->timeout); - spin_lock_bh(&ap_device_list_lock); - list_del_init(&ap_dev->list); - spin_unlock_bh(&ap_device_list_lock); + spin_lock_bh(&ap_list_lock); + if (is_card_dev(dev)) + list_del_init(&to_ap_card(dev)->list); + else + list_del_init(&to_ap_queue(dev)->list); + spin_unlock_bh(&ap_list_lock); if (ap_drv->remove) ap_drv->remove(ap_dev); return 0; } -static void ap_device_release(struct device *dev) -{ - kfree(to_ap_dev(dev)); -} - int ap_driver_register(struct ap_driver *ap_drv, struct module *owner, char *name) { @@ -1354,12 +731,7 @@ static ssize_t ap_control_domain_mask_show(struct bus_type *bus, char *buf) { if (!ap_configuration) /* QCI not supported */ return snprintf(buf, PAGE_SIZE, "not supported\n"); - if (!test_facility(76)) - /* format 0 - 16 bit domain field */ - return snprintf(buf, PAGE_SIZE, "%08x%08x\n", - ap_configuration->adm[0], - ap_configuration->adm[1]); - /* format 1 - 256 bit domain field */ + return snprintf(buf, PAGE_SIZE, "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", ap_configuration->adm[0], ap_configuration->adm[1], @@ -1371,6 +743,22 @@ static ssize_t ap_control_domain_mask_show(struct bus_type *bus, char *buf) static BUS_ATTR(ap_control_domain_mask, 0444, ap_control_domain_mask_show, NULL); +static ssize_t ap_usage_domain_mask_show(struct bus_type *bus, char *buf) +{ + if (!ap_configuration) /* QCI not supported */ + return snprintf(buf, PAGE_SIZE, "not supported\n"); + + return snprintf(buf, PAGE_SIZE, + "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", + ap_configuration->aqm[0], ap_configuration->aqm[1], + ap_configuration->aqm[2], ap_configuration->aqm[3], + ap_configuration->aqm[4], ap_configuration->aqm[5], + ap_configuration->aqm[6], ap_configuration->aqm[7]); +} + +static BUS_ATTR(ap_usage_domain_mask, 0444, + ap_usage_domain_mask_show, NULL); + static ssize_t ap_config_time_show(struct bus_type *bus, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", ap_config_time); @@ -1466,6 +854,7 @@ static BUS_ATTR(ap_max_domain_id, 0444, ap_max_domain_id_show, NULL); static struct bus_attribute *const ap_bus_attrs[] = { &bus_attr_ap_domain, &bus_attr_ap_control_domain_mask, + &bus_attr_ap_usage_domain_mask, &bus_attr_config_time, &bus_attr_poll_thread, &bus_attr_ap_interrupts, @@ -1524,110 +913,162 @@ static int ap_select_domain(void) return -ENODEV; } -/** - * __ap_scan_bus(): Scan the AP bus. - * @dev: Pointer to device - * @data: Pointer to data - * - * Scan the AP bus for new devices. +/* + * helper function to be used with bus_find_dev + * matches for the card device with the given id */ -static int __ap_scan_bus(struct device *dev, void *data) +static int __match_card_device_with_id(struct device *dev, void *data) { - return to_ap_dev(dev)->qid == (ap_qid_t)(unsigned long) data; + return is_card_dev(dev) && to_ap_card(dev)->id == (int)(long) data; } +/* helper function to be used with bus_find_dev + * matches for the queue device with a given qid + */ +static int __match_queue_device_with_qid(struct device *dev, void *data) +{ + return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data; +} + +/** + * ap_scan_bus(): Scan the AP bus for new devices + * Runs periodically, workqueue timer (ap_config_time) + */ static void ap_scan_bus(struct work_struct *unused) { - struct ap_device *ap_dev; + struct ap_queue *aq; + struct ap_card *ac; struct device *dev; ap_qid_t qid; - int queue_depth = 0, device_type = 0; - unsigned int device_functions = 0; - int rc, i, borked; + int depth = 0, type = 0; + unsigned int functions = 0; + int rc, id, dom, borked, domains; ap_query_configuration(); if (ap_select_domain() != 0) goto out; - - spin_lock_bh(&ap_domain_lock); - for (i = 0; i < AP_DEVICES; i++) { - qid = AP_MKQID(i, ap_domain_index); + for (id = 0; id < AP_DEVICES; id++) { + /* check if device is registered */ dev = bus_find_device(&ap_bus_type, NULL, - (void *)(unsigned long)qid, - __ap_scan_bus); - rc = ap_query_queue(qid, &queue_depth, &device_type, - &device_functions); - if (dev) { - ap_dev = to_ap_dev(dev); - spin_lock_bh(&ap_dev->lock); - if (rc == -ENODEV) - ap_dev->state = AP_STATE_BORKED; - borked = ap_dev->state == AP_STATE_BORKED; - spin_unlock_bh(&ap_dev->lock); - if (borked) /* Remove broken device */ + (void *)(long) id, + __match_card_device_with_id); + ac = dev ? to_ap_card(dev) : NULL; + if (!ap_test_config_card_id(id)) { + if (dev) { + /* Card device has been removed from + * configuration, remove the belonging + * queue devices. + */ + bus_for_each_dev(&ap_bus_type, NULL, + (void *)(long) id, + __ap_queue_devices_with_id_unregister); + /* now remove the card device */ device_unregister(dev); - put_device(dev); - if (!borked) - continue; - } - if (rc) - continue; - ap_dev = kzalloc(sizeof(*ap_dev), GFP_KERNEL); - if (!ap_dev) - break; - ap_dev->qid = qid; - ap_dev->state = AP_STATE_RESET_START; - ap_dev->interrupt = AP_INTR_DISABLED; - ap_dev->queue_depth = queue_depth; - ap_dev->raw_hwtype = device_type; - ap_dev->device_type = device_type; - /* CEX6 toleration: map to CEX5 */ - if (device_type == AP_DEVICE_TYPE_CEX6) - ap_dev->device_type = AP_DEVICE_TYPE_CEX5; - ap_dev->functions = device_functions; - spin_lock_init(&ap_dev->lock); - INIT_LIST_HEAD(&ap_dev->pendingq); - INIT_LIST_HEAD(&ap_dev->requestq); - INIT_LIST_HEAD(&ap_dev->list); - setup_timer(&ap_dev->timeout, ap_request_timeout, - (unsigned long) ap_dev); - - ap_dev->device.bus = &ap_bus_type; - ap_dev->device.parent = ap_root_device; - rc = dev_set_name(&ap_dev->device, "card%02x", - AP_QID_DEVICE(ap_dev->qid)); - if (rc) { - kfree(ap_dev); - continue; - } - /* Add to list of devices */ - spin_lock_bh(&ap_device_list_lock); - list_add(&ap_dev->list, &ap_device_list); - spin_unlock_bh(&ap_device_list_lock); - /* Start with a device reset */ - spin_lock_bh(&ap_dev->lock); - ap_sm_wait(ap_sm_event(ap_dev, AP_EVENT_POLL)); - spin_unlock_bh(&ap_dev->lock); - /* Register device */ - ap_dev->device.release = ap_device_release; - rc = device_register(&ap_dev->device); - if (rc) { - spin_lock_bh(&ap_dev->lock); - list_del_init(&ap_dev->list); - spin_unlock_bh(&ap_dev->lock); - put_device(&ap_dev->device); + put_device(dev); + } continue; } - /* Add device attributes. */ - rc = sysfs_create_group(&ap_dev->device.kobj, - &ap_dev_attr_group); - if (rc) { - device_unregister(&ap_dev->device); - continue; + /* According to the configuration there should be a card + * device, so check if there is at least one valid queue + * and maybe create queue devices and the card device. + */ + domains = 0; + for (dom = 0; dom < AP_DOMAINS; dom++) { + qid = AP_MKQID(id, dom); + dev = bus_find_device(&ap_bus_type, NULL, + (void *)(long) qid, + __match_queue_device_with_qid); + aq = dev ? to_ap_queue(dev) : NULL; + if (!ap_test_config_domain(dom)) { + if (dev) { + /* Queue device exists but has been + * removed from configuration. + */ + device_unregister(dev); + put_device(dev); + } + continue; + } + rc = ap_query_queue(qid, &depth, &type, &functions); + if (dev) { + spin_lock_bh(&aq->lock); + if (rc == -ENODEV || + /* adapter reconfiguration */ + (ac && ac->functions != functions)) + aq->state = AP_STATE_BORKED; + borked = aq->state == AP_STATE_BORKED; + spin_unlock_bh(&aq->lock); + if (borked) /* Remove broken device */ + device_unregister(dev); + put_device(dev); + if (!borked) { + domains++; + continue; + } + } + if (rc) + continue; + /* new queue device needed */ + if (!ac) { + /* but first create the card device */ + ac = ap_card_create(id, depth, + type, functions); + if (!ac) + continue; + ac->ap_dev.device.bus = &ap_bus_type; + ac->ap_dev.device.parent = ap_root_device; + dev_set_name(&ac->ap_dev.device, + "card%02x", id); + /* Register card with AP bus */ + rc = device_register(&ac->ap_dev.device); + if (rc) { + put_device(&ac->ap_dev.device); + ac = NULL; + break; + } + /* get it and thus adjust reference counter */ + get_device(&ac->ap_dev.device); + /* Add card device to card list */ + spin_lock_bh(&ap_list_lock); + list_add(&ac->list, &ap_card_list); + spin_unlock_bh(&ap_list_lock); + } + /* now create the new queue device */ + aq = ap_queue_create(qid, type); + if (!aq) + continue; + aq->card = ac; + aq->ap_dev.device.bus = &ap_bus_type; + aq->ap_dev.device.parent = &ac->ap_dev.device; + dev_set_name(&aq->ap_dev.device, + "%02x.%04x", id, dom); + /* Add queue device to card queue list */ + spin_lock_bh(&ap_list_lock); + list_add(&aq->list, &ac->queues); + spin_unlock_bh(&ap_list_lock); + /* Start with a device reset */ + spin_lock_bh(&aq->lock); + ap_wait(ap_sm_event(aq, AP_EVENT_POLL)); + spin_unlock_bh(&aq->lock); + /* Register device */ + rc = device_register(&aq->ap_dev.device); + if (rc) { + spin_lock_bh(&ap_list_lock); + list_del_init(&aq->list); + spin_unlock_bh(&ap_list_lock); + put_device(&aq->ap_dev.device); + continue; + } + domains++; + } /* end domain loop */ + if (ac) { + /* remove card dev if there are no queue devices */ + if (!domains) + device_unregister(&ac->ap_dev.device); + put_device(&ac->ap_dev.device); } - } - spin_unlock_bh(&ap_domain_lock); + } /* end device loop */ out: mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ); } @@ -1787,7 +1228,15 @@ void ap_module_exit(void) del_timer_sync(&ap_config_timer); hrtimer_cancel(&ap_poll_timer); tasklet_kill(&ap_tasklet); - bus_for_each_dev(&ap_bus_type, NULL, NULL, __ap_devices_unregister); + + /* first remove queue devices */ + bus_for_each_dev(&ap_bus_type, NULL, NULL, + __ap_queue_devices_unregister); + /* now remove the card devices */ + bus_for_each_dev(&ap_bus_type, NULL, NULL, + __ap_card_devices_unregister); + + /* remove bus attributes */ for (i = 0; ap_bus_attrs[i]; i++) bus_remove_file(&ap_bus_type, ap_bus_attrs[i]); unregister_pm_notifier(&ap_power_notifier); diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index fd66d2c450d5..54b17e142792 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -27,7 +27,6 @@ #define _AP_BUS_H_ #include <linux/device.h> -#include <linux/mod_devicetable.h> #include <linux/types.h> #define AP_DEVICES 64 /* Number of AP devices. */ @@ -38,14 +37,17 @@ extern int ap_domain_index; +extern spinlock_t ap_list_lock; +extern struct list_head ap_card_list; + /** * The ap_qid_t identifier of an ap queue. It contains a - * 6 bit device index and a 4 bit queue index (domain). + * 6 bit card index and a 4 bit queue index (domain). */ typedef unsigned int ap_qid_t; -#define AP_MKQID(_device, _queue) (((_device) & 63) << 8 | ((_queue) & 255)) -#define AP_QID_DEVICE(_qid) (((_qid) >> 8) & 63) +#define AP_MKQID(_card, _queue) (((_card) & 63) << 8 | ((_queue) & 255)) +#define AP_QID_CARD(_qid) (((_qid) >> 8) & 63) #define AP_QID_QUEUE(_qid) ((_qid) & 255) /** @@ -55,7 +57,7 @@ typedef unsigned int ap_qid_t; * @queue_full: Is 1 if the queue is full * @pad: A 4 bit pad * @int_enabled: Shows if interrupts are enabled for the AP - * @response_conde: Holds the 8 bit response code + * @response_code: Holds the 8 bit response code * @pad2: A 16 bit pad * * The ap queue status word is returned by all three AP functions @@ -167,7 +169,8 @@ struct ap_driver { int (*probe)(struct ap_device *); void (*remove)(struct ap_device *); - int request_timeout; /* request timeout in jiffies */ + void (*suspend)(struct ap_device *); + void (*resume)(struct ap_device *); }; #define to_ap_drv(x) container_of((x), struct ap_driver, driver) @@ -175,38 +178,50 @@ struct ap_driver { int ap_driver_register(struct ap_driver *, struct module *, char *); void ap_driver_unregister(struct ap_driver *); -typedef enum ap_wait (ap_func_t)(struct ap_device *ap_dev); - struct ap_device { struct device device; struct ap_driver *drv; /* Pointer to AP device driver. */ - spinlock_t lock; /* Per device lock. */ - struct list_head list; /* private list of all AP devices. */ + int device_type; /* AP device type. */ +}; - enum ap_state state; /* State of the AP device. */ +#define to_ap_dev(x) container_of((x), struct ap_device, device) - ap_qid_t qid; /* AP queue id. */ - int queue_depth; /* AP queue depth.*/ - int device_type; /* AP device type. */ +struct ap_card { + struct ap_device ap_dev; + struct list_head list; /* Private list of AP cards. */ + struct list_head queues; /* List of assoc. AP queues */ + void *private; /* ap driver private pointer. */ int raw_hwtype; /* AP raw hardware type. */ unsigned int functions; /* AP device function bitfield. */ - struct timer_list timeout; /* Timer for request timeouts. */ + int queue_depth; /* AP queue depth.*/ + int id; /* AP card number. */ +}; + +#define to_ap_card(x) container_of((x), struct ap_card, ap_dev.device) +struct ap_queue { + struct ap_device ap_dev; + struct list_head list; /* Private list of AP queues. */ + struct ap_card *card; /* Ptr to assoc. AP card. */ + spinlock_t lock; /* Per device lock. */ + void *private; /* ap driver private pointer. */ + ap_qid_t qid; /* AP queue id. */ int interrupt; /* indicate if interrupts are enabled */ int queue_count; /* # messages currently on AP queue. */ - - struct list_head pendingq; /* List of message sent to AP queue. */ + enum ap_state state; /* State of the AP device. */ int pendingq_count; /* # requests on pendingq list. */ - struct list_head requestq; /* List of message yet to be sent. */ int requestq_count; /* # requests on requestq list. */ int total_request_count; /* # requests ever for this AP device. */ - + int request_timeout; /* Request timout in jiffies. */ + struct timer_list timeout; /* Timer for request timeouts. */ + struct list_head pendingq; /* List of message sent to AP queue. */ + struct list_head requestq; /* List of message yet to be sent. */ struct ap_message *reply; /* Per device reply message. */ - - void *private; /* ap driver private pointer. */ }; -#define to_ap_dev(x) container_of((x), struct ap_device, device) +#define to_ap_queue(x) container_of((x), struct ap_queue, ap_dev.device) + +typedef enum ap_wait (ap_func_t)(struct ap_queue *queue); struct ap_message { struct list_head list; /* Request queueing. */ @@ -218,7 +233,7 @@ struct ap_message { void *private; /* ap driver private pointer. */ unsigned int special:1; /* Used for special commands. */ /* receive is called from tasklet context */ - void (*receive)(struct ap_device *, struct ap_message *, + void (*receive)(struct ap_queue *, struct ap_message *, struct ap_message *); }; @@ -233,10 +248,6 @@ struct ap_config_info { unsigned char reserved4[16]; } __packed; -#define AP_DEVICE(dt) \ - .dev_type=(dt), \ - .match_flags=AP_DEVICE_ID_MATCH_DEVICE_TYPE, - /** * ap_init_message() - Initialize ap_message. * Initialize a message before using. Otherwise this might result in @@ -251,6 +262,12 @@ static inline void ap_init_message(struct ap_message *ap_msg) ap_msg->receive = NULL; } +#define for_each_ap_card(_ac) \ + list_for_each_entry(_ac, &ap_card_list, list) + +#define for_each_ap_queue(_aq, _ac) \ + list_for_each_entry(_aq, &(_ac)->queues, list) + /* * Note: don't use ap_send/ap_recv after using ap_queue_message * for the first time. Otherwise the ap message queue will get @@ -259,11 +276,26 @@ static inline void ap_init_message(struct ap_message *ap_msg) int ap_send(ap_qid_t, unsigned long long, void *, size_t); int ap_recv(ap_qid_t, unsigned long long *, void *, size_t); -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); +enum ap_wait ap_sm_event(struct ap_queue *aq, enum ap_event event); +enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event); + +void ap_queue_message(struct ap_queue *aq, struct ap_message *ap_msg); +void ap_cancel_message(struct ap_queue *aq, struct ap_message *ap_msg); +void ap_flush_queue(struct ap_queue *aq); + +void *ap_airq_ptr(void); +void ap_wait(enum ap_wait wait); +void ap_request_timeout(unsigned long data); void ap_bus_force_rescan(void); -void ap_device_init_reply(struct ap_device *ap_dev, struct ap_message *ap_msg); + +void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *ap_msg); +struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type); +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); 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 new file mode 100644 index 000000000000..731dc0dbfb75 --- /dev/null +++ b/drivers/s390/crypto/ap_card.c @@ -0,0 +1,172 @@ +/* + * Copyright IBM Corp. 2016 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + * + * Adjunct processor bus, card related code. + */ + +#define KMSG_COMPONENT "ap" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/init.h> +#include <linux/slab.h> +#include <asm/facility.h> + +#include "ap_bus.h" +#include "ap_asm.h" + +/* + * AP card related attributes. + */ +static ssize_t ap_hwtype_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", ac->ap_dev.device_type); +} + +static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL); + +static ssize_t ap_raw_hwtype_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", ac->raw_hwtype); +} + +static DEVICE_ATTR(raw_hwtype, 0444, ap_raw_hwtype_show, NULL); + +static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", ac->queue_depth); +} + +static DEVICE_ATTR(depth, 0444, ap_depth_show, NULL); + +static ssize_t ap_functions_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + + return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions); +} + +static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL); + +static ssize_t ap_request_count_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + struct ap_queue *aq; + unsigned int req_cnt; + + req_cnt = 0; + spin_lock_bh(&ap_list_lock); + for_each_ap_queue(aq, ac) + req_cnt += aq->total_request_count; + spin_unlock_bh(&ap_list_lock); + return snprintf(buf, PAGE_SIZE, "%d\n", req_cnt); +} + +static DEVICE_ATTR(request_count, 0444, ap_request_count_show, NULL); + +static ssize_t ap_requestq_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + struct ap_queue *aq; + unsigned int reqq_cnt; + + reqq_cnt = 0; + spin_lock_bh(&ap_list_lock); + for_each_ap_queue(aq, ac) + reqq_cnt += aq->requestq_count; + spin_unlock_bh(&ap_list_lock); + return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); +} + +static DEVICE_ATTR(requestq_count, 0444, ap_requestq_count_show, NULL); + +static ssize_t ap_pendingq_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_card *ac = to_ap_card(dev); + struct ap_queue *aq; + unsigned int penq_cnt; + + penq_cnt = 0; + spin_lock_bh(&ap_list_lock); + for_each_ap_queue(aq, ac) + penq_cnt += aq->pendingq_count; + spin_unlock_bh(&ap_list_lock); + return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); +} + +static DEVICE_ATTR(pendingq_count, 0444, ap_pendingq_count_show, NULL); + +static ssize_t ap_modalias_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "ap:t%02X\n", to_ap_dev(dev)->device_type); +} + +static DEVICE_ATTR(modalias, 0444, ap_modalias_show, NULL); + +static struct attribute *ap_card_dev_attrs[] = { + &dev_attr_hwtype.attr, + &dev_attr_raw_hwtype.attr, + &dev_attr_depth.attr, + &dev_attr_ap_functions.attr, + &dev_attr_request_count.attr, + &dev_attr_requestq_count.attr, + &dev_attr_pendingq_count.attr, + &dev_attr_modalias.attr, + NULL +}; + +static struct attribute_group ap_card_dev_attr_group = { + .attrs = ap_card_dev_attrs +}; + +static const struct attribute_group *ap_card_dev_attr_groups[] = { + &ap_card_dev_attr_group, + NULL +}; + +struct device_type ap_card_type = { + .name = "ap_card", + .groups = ap_card_dev_attr_groups, +}; + +static void ap_card_device_release(struct device *dev) +{ + kfree(to_ap_card(dev)); +} + +struct ap_card *ap_card_create(int id, int queue_depth, int device_type, + unsigned int functions) +{ + struct ap_card *ac; + + ac = kzalloc(sizeof(*ac), GFP_KERNEL); + if (!ac) + return NULL; + 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; + /* CEX6 toleration: map to CEX5 */ + if (device_type == AP_DEVICE_TYPE_CEX6) + ac->ap_dev.device_type = AP_DEVICE_TYPE_CEX5; + ac->raw_hwtype = device_type; + ac->queue_depth = queue_depth; + ac->functions = functions; + ac->id = id; + return ac; +} diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c new file mode 100644 index 000000000000..8f95a071b670 --- /dev/null +++ b/drivers/s390/crypto/ap_queue.c @@ -0,0 +1,700 @@ +/* + * Copyright IBM Corp. 2016 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + * + * Adjunct processor bus, queue related code. + */ + +#define KMSG_COMPONENT "ap" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/init.h> +#include <linux/slab.h> +#include <asm/facility.h> + +#include "ap_bus.h" +#include "ap_asm.h" + +/** + * ap_queue_enable_interruption(): Enable interruption on an AP queue. + * @qid: The AP queue number + * @ind: the notification indicator byte + * + * Enables interruption on AP queue via ap_aqic(). Based on the return + * value it waits a while and tests the AP queue if interrupts + * have been switched on using ap_test_queue(). + */ +static int ap_queue_enable_interruption(struct ap_queue *aq, void *ind) +{ + struct ap_queue_status status; + + status = ap_aqic(aq->qid, ind); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + case AP_RESPONSE_OTHERWISE_CHANGED: + return 0; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + case AP_RESPONSE_INVALID_ADDRESS: + pr_err("Registering adapter interrupts for AP device %02x.%04x failed\n", + AP_QID_CARD(aq->qid), + AP_QID_QUEUE(aq->qid)); + return -EOPNOTSUPP; + case AP_RESPONSE_RESET_IN_PROGRESS: + case AP_RESPONSE_BUSY: + default: + return -EBUSY; + } +} + +/** + * __ap_send(): Send message to adjunct processor queue. + * @qid: The AP queue number + * @psmid: The program supplied message identifier + * @msg: The message text + * @length: The message length + * @special: Special Bit + * + * Returns AP queue status structure. + * Condition code 1 on NQAP can't happen because the L bit is 1. + * Condition code 2 on NQAP also means the send is incomplete, + * 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, + unsigned int special) +{ + if (special == 1) + qid |= 0x400000UL; + return ap_nqap(qid, psmid, msg, length); +} + +int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) +{ + struct ap_queue_status status; + + status = __ap_send(qid, psmid, msg, length, 0); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + return 0; + case AP_RESPONSE_Q_FULL: + case AP_RESPONSE_RESET_IN_PROGRESS: + return -EBUSY; + case AP_RESPONSE_REQ_FAC_NOT_INST: + return -EINVAL; + default: /* Device is gone. */ + return -ENODEV; + } +} +EXPORT_SYMBOL(ap_send); + +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_dqap(qid, psmid, msg, length); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + return 0; + case AP_RESPONSE_NO_PENDING_REPLY: + if (status.queue_empty) + return -ENOENT; + return -EBUSY; + case AP_RESPONSE_RESET_IN_PROGRESS: + return -EBUSY; + default: + return -ENODEV; + } +} +EXPORT_SYMBOL(ap_recv); + +/* State machine definitions and helpers */ + +static enum ap_wait ap_sm_nop(struct ap_queue *aq) +{ + return AP_WAIT_NONE; +} + +/** + * ap_sm_recv(): Receive pending reply messages from an AP queue but do + * not change the state of the device. + * @aq: pointer to the AP queue + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static struct ap_queue_status ap_sm_recv(struct ap_queue *aq) +{ + struct ap_queue_status status; + struct ap_message *ap_msg; + + status = ap_dqap(aq->qid, &aq->reply->psmid, + aq->reply->message, aq->reply->length); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + aq->queue_count--; + if (aq->queue_count > 0) + mod_timer(&aq->timeout, + jiffies + aq->request_timeout); + list_for_each_entry(ap_msg, &aq->pendingq, list) { + if (ap_msg->psmid != aq->reply->psmid) + continue; + list_del_init(&ap_msg->list); + aq->pendingq_count--; + ap_msg->receive(aq, ap_msg, aq->reply); + break; + } + case AP_RESPONSE_NO_PENDING_REPLY: + if (!status.queue_empty || aq->queue_count <= 0) + break; + /* The card shouldn't forget requests but who knows. */ + aq->queue_count = 0; + list_splice_init(&aq->pendingq, &aq->requestq); + aq->requestq_count += aq->pendingq_count; + aq->pendingq_count = 0; + break; + default: + break; + } + return status; +} + +/** + * ap_sm_read(): Receive pending reply messages from an AP queue. + * @aq: pointer to the AP queue + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static enum ap_wait ap_sm_read(struct ap_queue *aq) +{ + struct ap_queue_status status; + + if (!aq->reply) + return AP_WAIT_NONE; + status = ap_sm_recv(aq); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (aq->queue_count > 0) { + aq->state = AP_STATE_WORKING; + return AP_WAIT_AGAIN; + } + aq->state = AP_STATE_IDLE; + return AP_WAIT_NONE; + case AP_RESPONSE_NO_PENDING_REPLY: + if (aq->queue_count > 0) + return AP_WAIT_INTERRUPT; + aq->state = AP_STATE_IDLE; + return AP_WAIT_NONE; + default: + aq->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/** + * ap_sm_suspend_read(): Receive pending reply messages from an AP queue + * without changing the device state in between. In suspend mode we don't + * allow sending new requests, therefore just fetch pending replies. + * @aq: pointer to the AP queue + * + * Returns AP_WAIT_NONE or AP_WAIT_AGAIN + */ +static enum ap_wait ap_sm_suspend_read(struct ap_queue *aq) +{ + struct ap_queue_status status; + + if (!aq->reply) + return AP_WAIT_NONE; + status = ap_sm_recv(aq); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (aq->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 queue. + * @aq: pointer to the AP queue + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static enum ap_wait ap_sm_write(struct ap_queue *aq) +{ + struct ap_queue_status status; + struct ap_message *ap_msg; + + if (aq->requestq_count <= 0) + return AP_WAIT_NONE; + /* Start the next request on the queue. */ + ap_msg = list_entry(aq->requestq.next, struct ap_message, list); + status = __ap_send(aq->qid, ap_msg->psmid, + ap_msg->message, ap_msg->length, ap_msg->special); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + aq->queue_count++; + if (aq->queue_count == 1) + mod_timer(&aq->timeout, jiffies + aq->request_timeout); + list_move_tail(&ap_msg->list, &aq->pendingq); + aq->requestq_count--; + aq->pendingq_count++; + if (aq->queue_count < aq->card->queue_depth) { + aq->state = AP_STATE_WORKING; + return AP_WAIT_AGAIN; + } + /* fall through */ + case AP_RESPONSE_Q_FULL: + aq->state = AP_STATE_QUEUE_FULL; + return AP_WAIT_INTERRUPT; + case AP_RESPONSE_RESET_IN_PROGRESS: + aq->state = AP_STATE_RESET_WAIT; + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_MESSAGE_TOO_BIG: + case AP_RESPONSE_REQ_FAC_NOT_INST: + list_del_init(&ap_msg->list); + aq->requestq_count--; + ap_msg->rc = -EINVAL; + ap_msg->receive(aq, ap_msg, NULL); + return AP_WAIT_AGAIN; + default: + aq->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/** + * ap_sm_read_write(): Send and receive messages to/from an AP queue. + * @aq: pointer to the AP queue + * + * Returns AP_WAIT_NONE, AP_WAIT_AGAIN, or AP_WAIT_INTERRUPT + */ +static enum ap_wait ap_sm_read_write(struct ap_queue *aq) +{ + return min(ap_sm_read(aq), ap_sm_write(aq)); +} + +/** + * ap_sm_reset(): Reset an AP queue. + * @qid: The AP queue number + * + * Submit the Reset command to an AP queue. + */ +static enum ap_wait ap_sm_reset(struct ap_queue *aq) +{ + struct ap_queue_status status; + + status = ap_rapq(aq->qid); + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + case AP_RESPONSE_RESET_IN_PROGRESS: + aq->state = AP_STATE_RESET_WAIT; + aq->interrupt = AP_INTR_DISABLED; + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_BUSY: + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + default: + aq->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/** + * ap_sm_reset_wait(): Test queue for completion of the reset operation + * @aq: pointer to the AP queue + * + * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. + */ +static enum ap_wait ap_sm_reset_wait(struct ap_queue *aq) +{ + struct ap_queue_status status; + void *lsi_ptr; + + if (aq->queue_count > 0 && aq->reply) + /* Try to read a completed message and get the status */ + status = ap_sm_recv(aq); + else + /* Get the status with TAPQ */ + status = ap_tapq(aq->qid, NULL); + + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + lsi_ptr = ap_airq_ptr(); + if (lsi_ptr && ap_queue_enable_interruption(aq, lsi_ptr) == 0) + aq->state = AP_STATE_SETIRQ_WAIT; + else + aq->state = (aq->queue_count > 0) ? + AP_STATE_WORKING : AP_STATE_IDLE; + return AP_WAIT_AGAIN; + case AP_RESPONSE_BUSY: + case AP_RESPONSE_RESET_IN_PROGRESS: + return AP_WAIT_TIMEOUT; + case AP_RESPONSE_Q_NOT_AVAIL: + case AP_RESPONSE_DECONFIGURED: + case AP_RESPONSE_CHECKSTOPPED: + default: + aq->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/** + * ap_sm_setirq_wait(): Test queue for completion of the irq enablement + * @aq: pointer to the AP queue + * + * Returns AP_POLL_IMMEDIATELY, AP_POLL_AFTER_TIMEROUT or 0. + */ +static enum ap_wait ap_sm_setirq_wait(struct ap_queue *aq) +{ + struct ap_queue_status status; + + if (aq->queue_count > 0 && aq->reply) + /* Try to read a completed message and get the status */ + status = ap_sm_recv(aq); + else + /* Get the status with TAPQ */ + status = ap_tapq(aq->qid, NULL); + + if (status.int_enabled == 1) { + /* Irqs are now enabled */ + aq->interrupt = AP_INTR_ENABLED; + aq->state = (aq->queue_count > 0) ? + AP_STATE_WORKING : AP_STATE_IDLE; + } + + switch (status.response_code) { + case AP_RESPONSE_NORMAL: + if (aq->queue_count > 0) + return AP_WAIT_AGAIN; + /* fallthrough */ + case AP_RESPONSE_NO_PENDING_REPLY: + return AP_WAIT_TIMEOUT; + default: + aq->state = AP_STATE_BORKED; + return AP_WAIT_NONE; + } +} + +/* + * AP state machine jump table + */ +static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { + [AP_STATE_RESET_START] = { + [AP_EVENT_POLL] = ap_sm_reset, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_RESET_WAIT] = { + [AP_EVENT_POLL] = ap_sm_reset_wait, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_SETIRQ_WAIT] = { + [AP_EVENT_POLL] = ap_sm_setirq_wait, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_IDLE] = { + [AP_EVENT_POLL] = ap_sm_write, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_WORKING] = { + [AP_EVENT_POLL] = ap_sm_read_write, + [AP_EVENT_TIMEOUT] = ap_sm_reset, + }, + [AP_STATE_QUEUE_FULL] = { + [AP_EVENT_POLL] = ap_sm_read, + [AP_EVENT_TIMEOUT] = ap_sm_reset, + }, + [AP_STATE_SUSPEND_WAIT] = { + [AP_EVENT_POLL] = ap_sm_suspend_read, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, + [AP_STATE_BORKED] = { + [AP_EVENT_POLL] = ap_sm_nop, + [AP_EVENT_TIMEOUT] = ap_sm_nop, + }, +}; + +enum ap_wait ap_sm_event(struct ap_queue *aq, enum ap_event event) +{ + return ap_jumptable[aq->state][event](aq); +} + +enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event) +{ + enum ap_wait wait; + + while ((wait = ap_sm_event(aq, event)) == AP_WAIT_AGAIN) + ; + return wait; +} + +/* + * Power management for queue devices + */ +void ap_queue_suspend(struct ap_device *ap_dev) +{ + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + + /* Poll on the device until all requests are finished. */ + spin_lock_bh(&aq->lock); + aq->state = AP_STATE_SUSPEND_WAIT; + while (ap_sm_event(aq, AP_EVENT_POLL) != AP_WAIT_NONE) + ; + aq->state = AP_STATE_BORKED; + spin_unlock_bh(&aq->lock); +} +EXPORT_SYMBOL(ap_queue_suspend); + +void ap_queue_resume(struct ap_device *ap_dev) +{ +} +EXPORT_SYMBOL(ap_queue_resume); + +/* + * AP queue related attributes. + */ +static ssize_t ap_request_count_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + unsigned int req_cnt; + + spin_lock_bh(&aq->lock); + req_cnt = aq->total_request_count; + spin_unlock_bh(&aq->lock); + return snprintf(buf, PAGE_SIZE, "%d\n", req_cnt); +} + +static DEVICE_ATTR(request_count, 0444, ap_request_count_show, NULL); + +static ssize_t ap_requestq_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + unsigned int reqq_cnt = 0; + + spin_lock_bh(&aq->lock); + reqq_cnt = aq->requestq_count; + spin_unlock_bh(&aq->lock); + return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); +} + +static DEVICE_ATTR(requestq_count, 0444, ap_requestq_count_show, NULL); + +static ssize_t ap_pendingq_count_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + unsigned int penq_cnt = 0; + + spin_lock_bh(&aq->lock); + penq_cnt = aq->pendingq_count; + spin_unlock_bh(&aq->lock); + return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); +} + +static DEVICE_ATTR(pendingq_count, 0444, ap_pendingq_count_show, NULL); + +static ssize_t ap_reset_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + int rc = 0; + + spin_lock_bh(&aq->lock); + switch (aq->state) { + case AP_STATE_RESET_START: + case AP_STATE_RESET_WAIT: + rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); + break; + case AP_STATE_WORKING: + case AP_STATE_QUEUE_FULL: + rc = snprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); + break; + default: + rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); + } + spin_unlock_bh(&aq->lock); + return rc; +} + +static DEVICE_ATTR(reset, 0444, ap_reset_show, NULL); + +static ssize_t ap_interrupt_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + int rc = 0; + + spin_lock_bh(&aq->lock); + if (aq->state == AP_STATE_SETIRQ_WAIT) + rc = snprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); + else if (aq->interrupt == AP_INTR_ENABLED) + rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); + else + rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); + spin_unlock_bh(&aq->lock); + return rc; +} + +static DEVICE_ATTR(interrupt, 0444, ap_interrupt_show, NULL); + +static struct attribute *ap_queue_dev_attrs[] = { + &dev_attr_request_count.attr, + &dev_attr_requestq_count.attr, + &dev_attr_pendingq_count.attr, + &dev_attr_reset.attr, + &dev_attr_interrupt.attr, + NULL +}; + +static struct attribute_group ap_queue_dev_attr_group = { + .attrs = ap_queue_dev_attrs +}; + +static const struct attribute_group *ap_queue_dev_attr_groups[] = { + &ap_queue_dev_attr_group, + NULL +}; + +struct device_type ap_queue_type = { + .name = "ap_queue", + .groups = ap_queue_dev_attr_groups, +}; + +static void ap_queue_device_release(struct device *dev) +{ + kfree(to_ap_queue(dev)); +} + +struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type) +{ + struct ap_queue *aq; + + aq = kzalloc(sizeof(*aq), GFP_KERNEL); + if (!aq) + return NULL; + aq->ap_dev.device.release = ap_queue_device_release; + aq->ap_dev.device.type = &ap_queue_type; + aq->ap_dev.device_type = device_type; + /* CEX6 toleration: map to CEX5 */ + if (device_type == AP_DEVICE_TYPE_CEX6) + aq->ap_dev.device_type = AP_DEVICE_TYPE_CEX5; + aq->qid = qid; + aq->state = AP_STATE_RESET_START; + aq->interrupt = AP_INTR_DISABLED; + spin_lock_init(&aq->lock); + INIT_LIST_HEAD(&aq->pendingq); + INIT_LIST_HEAD(&aq->requestq); + setup_timer(&aq->timeout, ap_request_timeout, (unsigned long) aq); + + return aq; +} + +void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *reply) +{ + aq->reply = reply; + + spin_lock_bh(&aq->lock); + ap_wait(ap_sm_event(aq, AP_EVENT_POLL)); + spin_unlock_bh(&aq->lock); +} +EXPORT_SYMBOL(ap_queue_init_reply); + +/** + * ap_queue_message(): Queue a request to an AP device. + * @aq: The AP device to queue the message to + * @ap_msg: The message that is to be added + */ +void ap_queue_message(struct ap_queue *aq, struct ap_message *ap_msg) +{ + /* For asynchronous message handling a valid receive-callback + * is required. + */ + BUG_ON(!ap_msg->receive); + + spin_lock_bh(&aq->lock); + /* Queue the message. */ + list_add_tail(&ap_msg->list, &aq->requestq); + aq->requestq_count++; + aq->total_request_count++; + /* Send/receive as many request from the queue as possible. */ + ap_wait(ap_sm_event_loop(aq, AP_EVENT_POLL)); + spin_unlock_bh(&aq->lock); +} +EXPORT_SYMBOL(ap_queue_message); + +/** + * ap_cancel_message(): Cancel a crypto request. + * @aq: The AP device that has the message queued + * @ap_msg: The message that is to be removed + * + * Cancel a crypto request. This is done by removing the request + * from the device pending or request queue. Note that the + * request stays on the AP queue. When it finishes the message + * reply will be discarded because the psmid can't be found. + */ +void ap_cancel_message(struct ap_queue *aq, struct ap_message *ap_msg) +{ + struct ap_message *tmp; + + spin_lock_bh(&aq->lock); + if (!list_empty(&ap_msg->list)) { + list_for_each_entry(tmp, &aq->pendingq, list) + if (tmp->psmid == ap_msg->psmid) { + aq->pendingq_count--; + goto found; + } + aq->requestq_count--; +found: + list_del_init(&ap_msg->list); + } + spin_unlock_bh(&aq->lock); +} +EXPORT_SYMBOL(ap_cancel_message); + +/** + * __ap_flush_queue(): Flush requests. + * @aq: Pointer to the AP queue + * + * Flush all requests from the request/pending queue of an AP device. + */ +static void __ap_flush_queue(struct ap_queue *aq) +{ + struct ap_message *ap_msg, *next; + + list_for_each_entry_safe(ap_msg, next, &aq->pendingq, list) { + list_del_init(&ap_msg->list); + aq->pendingq_count--; + ap_msg->rc = -EAGAIN; + ap_msg->receive(aq, ap_msg, NULL); + } + list_for_each_entry_safe(ap_msg, next, &aq->requestq, list) { + list_del_init(&ap_msg->list); + aq->requestq_count--; + ap_msg->rc = -EAGAIN; + ap_msg->receive(aq, ap_msg, NULL); + } +} + +void ap_flush_queue(struct ap_queue *aq) +{ + spin_lock_bh(&aq->lock); + __ap_flush_queue(aq); + spin_unlock_bh(&aq->lock); +} +EXPORT_SYMBOL(ap_flush_queue); + +void ap_queue_remove(struct ap_queue *aq) +{ + ap_flush_queue(aq); + del_timer_sync(&aq->timeout); +} +EXPORT_SYMBOL(ap_queue_remove); diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 28913e540096..fd0ae8cd2bee 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -59,71 +59,22 @@ static int zcrypt_hwrng_seed = 1; module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP); MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on)."); -static DEFINE_SPINLOCK(zcrypt_device_lock); -static LIST_HEAD(zcrypt_device_list); -static int zcrypt_device_count = 0; +DEFINE_SPINLOCK(zcrypt_list_lock); +LIST_HEAD(zcrypt_card_list); +int zcrypt_device_count; + static atomic_t zcrypt_open_count = ATOMIC_INIT(0); static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0); atomic_t zcrypt_rescan_req = ATOMIC_INIT(0); EXPORT_SYMBOL(zcrypt_rescan_req); -static int zcrypt_rng_device_add(void); -static void zcrypt_rng_device_remove(void); - static LIST_HEAD(zcrypt_ops_list); -static debug_info_t *zcrypt_dbf_common; -static debug_info_t *zcrypt_dbf_devices; static struct dentry *debugfs_root; - -/* - * Device attributes common for all crypto devices. - */ -static ssize_t zcrypt_type_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct zcrypt_device *zdev = to_ap_dev(dev)->private; - return snprintf(buf, PAGE_SIZE, "%s\n", zdev->type_string); -} - -static DEVICE_ATTR(type, 0444, zcrypt_type_show, NULL); - -static ssize_t zcrypt_online_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct zcrypt_device *zdev = to_ap_dev(dev)->private; - return snprintf(buf, PAGE_SIZE, "%d\n", zdev->online); -} - -static ssize_t zcrypt_online_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct zcrypt_device *zdev = to_ap_dev(dev)->private; - int online; - - if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) - return -EINVAL; - zdev->online = online; - ZCRYPT_DBF_DEV(DBF_INFO, zdev, "dev%04xo%dman", zdev->ap_dev->qid, - zdev->online); - if (!online) - ap_flush_queue(zdev->ap_dev); - return count; -} - -static DEVICE_ATTR(online, 0644, zcrypt_online_show, zcrypt_online_store); - -static struct attribute * zcrypt_device_attrs[] = { - &dev_attr_type.attr, - &dev_attr_online.attr, - NULL, -}; - -static struct attribute_group zcrypt_device_attr_group = { - .attrs = zcrypt_device_attrs, -}; +debug_info_t *zcrypt_dbf_common; +debug_info_t *zcrypt_dbf_devices; +debug_info_t *zcrypt_dbf_cards; /** * Process a rescan of the transport layer. @@ -143,174 +94,6 @@ static inline int zcrypt_process_rescan(void) return 0; } -/** - * __zcrypt_increase_preference(): Increase preference of a crypto device. - * @zdev: Pointer the crypto device - * - * Move the device towards the head of the device list. - * Need to be called while holding the zcrypt device list lock. - * Note: cards with speed_rating of 0 are kept at the end of the list. - */ -static void __zcrypt_increase_preference(struct zcrypt_device *zdev, - unsigned int weight) -{ - struct zcrypt_device *tmp; - struct list_head *l; - - zdev->load -= weight; - for (l = zdev->list.prev; l != &zcrypt_device_list; l = l->prev) { - tmp = list_entry(l, struct zcrypt_device, list); - if (tmp->load <= zdev->load) - break; - } - if (l == zdev->list.prev) - return; - /* Move zdev behind l */ - list_move(&zdev->list, l); -} - -/** - * __zcrypt_decrease_preference(): Decrease preference of a crypto device. - * @zdev: Pointer to a crypto device. - * - * Move the device towards the tail of the device list. - * Need to be called while holding the zcrypt device list lock. - * Note: cards with speed_rating of 0 are kept at the end of the list. - */ -static void __zcrypt_decrease_preference(struct zcrypt_device *zdev, - unsigned int weight) -{ - struct zcrypt_device *tmp; - struct list_head *l; - - zdev->load += weight; - for (l = zdev->list.next; l != &zcrypt_device_list; l = l->next) { - tmp = list_entry(l, struct zcrypt_device, list); - if (tmp->load > zdev->load) - break; - } - if (l == zdev->list.next) - return; - /* Move zdev before l */ - list_move_tail(&zdev->list, l); -} - -static void zcrypt_device_release(struct kref *kref) -{ - struct zcrypt_device *zdev = - container_of(kref, struct zcrypt_device, refcount); - zcrypt_device_free(zdev); -} - -void zcrypt_device_get(struct zcrypt_device *zdev) -{ - kref_get(&zdev->refcount); -} -EXPORT_SYMBOL(zcrypt_device_get); - -int zcrypt_device_put(struct zcrypt_device *zdev) -{ - return kref_put(&zdev->refcount, zcrypt_device_release); -} -EXPORT_SYMBOL(zcrypt_device_put); - -struct zcrypt_device *zcrypt_device_alloc(size_t max_response_size) -{ - struct zcrypt_device *zdev; - - zdev = kzalloc(sizeof(struct zcrypt_device), GFP_KERNEL); - if (!zdev) - return NULL; - zdev->reply.message = kmalloc(max_response_size, GFP_KERNEL); - if (!zdev->reply.message) - goto out_free; - zdev->reply.length = max_response_size; - spin_lock_init(&zdev->lock); - INIT_LIST_HEAD(&zdev->list); - zdev->dbf_area = zcrypt_dbf_devices; - return zdev; - -out_free: - kfree(zdev); - return NULL; -} -EXPORT_SYMBOL(zcrypt_device_alloc); - -void zcrypt_device_free(struct zcrypt_device *zdev) -{ - kfree(zdev->reply.message); - kfree(zdev); -} -EXPORT_SYMBOL(zcrypt_device_free); - -/** - * zcrypt_device_register() - Register a crypto device. - * @zdev: Pointer to a crypto device - * - * Register a crypto device. Returns 0 if successful. - */ -int zcrypt_device_register(struct zcrypt_device *zdev) -{ - int rc; - - if (!zdev->ops) - return -ENODEV; - rc = sysfs_create_group(&zdev->ap_dev->device.kobj, - &zcrypt_device_attr_group); - if (rc) - goto out; - get_device(&zdev->ap_dev->device); - kref_init(&zdev->refcount); - spin_lock_bh(&zcrypt_device_lock); - zdev->online = 1; /* New devices are online by default. */ - ZCRYPT_DBF_DEV(DBF_INFO, zdev, "dev%04xo%dreg", zdev->ap_dev->qid, - zdev->online); - list_add_tail(&zdev->list, &zcrypt_device_list); - __zcrypt_increase_preference(zdev, 0); /* sort devices acc. weight */ - zcrypt_device_count++; - spin_unlock_bh(&zcrypt_device_lock); - if (zdev->ops->rng) { - rc = zcrypt_rng_device_add(); - if (rc) - goto out_unregister; - } - return 0; - -out_unregister: - spin_lock_bh(&zcrypt_device_lock); - zcrypt_device_count--; - list_del_init(&zdev->list); - spin_unlock_bh(&zcrypt_device_lock); - sysfs_remove_group(&zdev->ap_dev->device.kobj, - &zcrypt_device_attr_group); - put_device(&zdev->ap_dev->device); - zcrypt_device_put(zdev); -out: - return rc; -} -EXPORT_SYMBOL(zcrypt_device_register); - -/** - * zcrypt_device_unregister(): Unregister a crypto device. - * @zdev: Pointer to crypto device - * - * Unregister a crypto device. - */ -void zcrypt_device_unregister(struct zcrypt_device *zdev) -{ - if (zdev->ops->rng) - zcrypt_rng_device_remove(); - spin_lock_bh(&zcrypt_device_lock); - zcrypt_device_count--; - list_del_init(&zdev->list); - spin_unlock_bh(&zcrypt_device_lock); - sysfs_remove_group(&zdev->ap_dev->device.kobj, - &zcrypt_device_attr_group); - put_device(&zdev->ap_dev->device); - zcrypt_device_put(zdev); -} -EXPORT_SYMBOL(zcrypt_device_unregister); - void zcrypt_msgtype_register(struct zcrypt_ops *zops) { list_add_tail(&zops->list, &zcrypt_ops_list); @@ -377,14 +160,44 @@ static int zcrypt_release(struct inode *inode, struct file *filp) return 0; } +static inline struct zcrypt_queue *zcrypt_pick_queue(struct zcrypt_card *zc, + struct zcrypt_queue *zq, + unsigned int weight) +{ + if (!zq || !try_module_get(zq->queue->ap_dev.drv->driver.owner)) + return NULL; + zcrypt_queue_get(zq); + get_device(&zq->queue->ap_dev.device); + atomic_add(weight, &zc->load); + atomic_add(weight, &zq->load); + zq->request_count++; + return zq; +} + +static inline void zcrypt_drop_queue(struct zcrypt_card *zc, + struct zcrypt_queue *zq, + unsigned int weight) +{ + struct module *mod = zq->queue->ap_dev.drv->driver.owner; + + zq->request_count--; + atomic_sub(weight, &zc->load); + atomic_sub(weight, &zq->load); + put_device(&zq->queue->ap_dev.device); + zcrypt_queue_put(zq); + module_put(mod); +} + /* * zcrypt ioctls. */ static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex) { - struct zcrypt_device *zdev, *pref_zdev = NULL; + struct zcrypt_card *zc, *pref_zc; + struct zcrypt_queue *zq, *pref_zq; + unsigned int weight, pref_weight; + unsigned int func_code; int rc; - unsigned int weight, func_code, pref_weight = 0; if (mex->outputdatalength < mex->inputdatalength) return -EINVAL; @@ -399,59 +212,56 @@ static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex) if (rc) return rc; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - if (!zdev->online || - !zdev->ops->rsa_modexpo || - zdev->min_mod_size > mex->inputdatalength || - zdev->max_mod_size < mex->inputdatalength) + pref_zc = NULL; + pref_zq = NULL; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + /* Check for online accelarator and CCA cards */ + if (!zc->online || !(zc->card->functions & 0x18000000)) continue; - weight = zdev->speed_rating[func_code]; - if (!pref_zdev) { - pref_zdev = zdev; - pref_weight = weight; + /* Check for size limits */ + if (zc->min_mod_size > mex->inputdatalength || + zc->max_mod_size < mex->inputdatalength) continue; - } - if ((pref_zdev->load + pref_weight) > (zdev->load + weight)) { - pref_zdev = zdev; - pref_weight = weight; + /* get weight index of the card device */ + weight = zc->speed_rating[func_code]; + if (pref_zc && atomic_read(&zc->load) + weight >= + atomic_read(&pref_zc->load) + pref_weight) continue; + for_each_zcrypt_queue(zq, zc) { + /* check if device is online and eligible */ + if (!zq->online) + continue; + if (pref_zq && atomic_read(&zq->load) + weight >= + atomic_read(&pref_zq->load) + pref_weight) + continue; + pref_zc = zc; + pref_zq = zq; + pref_weight = weight; } - if ((pref_zdev->load + pref_weight) <= zdev->load) - break; /* Load on remaining devices too high - abort */ } + pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); - if (!pref_zdev) { - spin_unlock_bh(&zcrypt_device_lock); + if (!pref_zq) return -ENODEV; - } - __zcrypt_decrease_preference(pref_zdev, pref_weight); - zcrypt_device_get(pref_zdev); - get_device(&pref_zdev->ap_dev->device); - pref_zdev->request_count++; - if (try_module_get(pref_zdev->ap_dev->drv->driver.owner)) { - spin_unlock_bh(&zcrypt_device_lock); - rc = -ENODEV; - rc = pref_zdev->ops->rsa_modexpo(pref_zdev, mex); - spin_lock_bh(&zcrypt_device_lock); - module_put(pref_zdev->ap_dev->drv->driver.owner); - } else - rc = -EAGAIN; - pref_zdev->request_count--; - __zcrypt_increase_preference(pref_zdev, pref_weight); - put_device(&pref_zdev->ap_dev->device); - zcrypt_device_put(pref_zdev); - spin_unlock_bh(&zcrypt_device_lock); + rc = pref_zq->ops->rsa_modexpo(pref_zq, mex); + + spin_lock(&zcrypt_list_lock); + zcrypt_drop_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + return rc; } static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt) { - struct zcrypt_device *zdev, *pref_zdev = NULL; - unsigned long long z1, z2, z3; - int rc, copied; - unsigned int weight, func_code, pref_weight = 0; + struct zcrypt_card *zc, *pref_zc; + struct zcrypt_queue *zq, *pref_zq; + unsigned int weight, pref_weight; + unsigned int func_code; + int rc; if (crt->outputdatalength < crt->inputdatalength) return -EINVAL; @@ -466,385 +276,388 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt) if (rc) return rc; - copied = 0; - restart: - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - if (!zdev->online || - !zdev->ops->rsa_modexpo_crt || - zdev->min_mod_size > crt->inputdatalength || - zdev->max_mod_size < crt->inputdatalength) + pref_zc = NULL; + pref_zq = NULL; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + /* Check for online accelarator and CCA cards */ + if (!zc->online || !(zc->card->functions & 0x18000000)) continue; - if (zdev->short_crt && crt->inputdatalength > 240) { - /* - * Check inputdata for leading zeros for cards - * that can't handle np_prime, bp_key, or - * u_mult_inv > 128 bytes. - */ - if (copied == 0) { - unsigned int len; - spin_unlock_bh(&zcrypt_device_lock); - /* len is max 256 / 2 - 120 = 8 - * For bigger device just assume len of leading - * 0s is 8 as stated in the requirements for - * ica_rsa_modexpo_crt struct in zcrypt.h. - */ - if (crt->inputdatalength <= 256) - len = crt->inputdatalength / 2 - 120; - else - len = 8; - if (len > sizeof(z1)) - return -EFAULT; - z1 = z2 = z3 = 0; - if (copy_from_user(&z1, crt->np_prime, len) || - copy_from_user(&z2, crt->bp_key, len) || - copy_from_user(&z3, crt->u_mult_inv, len)) - return -EFAULT; - z1 = z2 = z3 = 0; - copied = 1; - /* - * We have to restart device lookup - - * the device list may have changed by now. - */ - goto restart; - } - if (z1 != 0ULL || z2 != 0ULL || z3 != 0ULL) - /* The device can't handle this request. */ - continue; - } - - weight = zdev->speed_rating[func_code]; - if (!pref_zdev) { - pref_zdev = zdev; - pref_weight = weight; + /* Check for size limits */ + if (zc->min_mod_size > crt->inputdatalength || + zc->max_mod_size < crt->inputdatalength) continue; - } - if ((pref_zdev->load + pref_weight) > (zdev->load + weight)) { - pref_zdev = zdev; - pref_weight = weight; + /* get weight index of the card device */ + weight = zc->speed_rating[func_code]; + if (pref_zc && atomic_read(&zc->load) + weight >= + atomic_read(&pref_zc->load) + pref_weight) continue; + for_each_zcrypt_queue(zq, zc) { + /* check if device is online and eligible */ + if (!zq->online) + continue; + if (pref_zq && atomic_read(&zq->load) + weight >= + atomic_read(&pref_zq->load) + pref_weight) + continue; + pref_zc = zc; + pref_zq = zq; + pref_weight = weight; } - if ((pref_zdev->load + pref_weight) <= zdev->load) - break; /* Load on remaining devices too high - abort */ } - if (!pref_zdev) { - spin_unlock_bh(&zcrypt_device_lock); + pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + + if (!pref_zq) return -ENODEV; - } - __zcrypt_decrease_preference(pref_zdev, pref_weight); - zcrypt_device_get(pref_zdev); - get_device(&pref_zdev->ap_dev->device); - pref_zdev->request_count++; - if (try_module_get(pref_zdev->ap_dev->drv->driver.owner)) { - spin_unlock_bh(&zcrypt_device_lock); - rc = pref_zdev->ops->rsa_modexpo_crt(pref_zdev, crt); - spin_lock_bh(&zcrypt_device_lock); - module_put(pref_zdev->ap_dev->drv->driver.owner); - } else - rc = -EAGAIN; - pref_zdev->request_count--; - __zcrypt_increase_preference(pref_zdev, pref_weight); - put_device(&pref_zdev->ap_dev->device); - zcrypt_device_put(pref_zdev); - spin_unlock_bh(&zcrypt_device_lock); + + rc = pref_zq->ops->rsa_modexpo_crt(pref_zq, crt); + + spin_lock(&zcrypt_list_lock); + zcrypt_drop_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + return rc; } static long zcrypt_send_cprb(struct ica_xcRB *xcRB) { - struct zcrypt_device *zdev, *pref_zdev = NULL; - unsigned int weight = 0, func_code = 0, pref_weight = 0; - int rc; + struct zcrypt_card *zc, *pref_zc; + struct zcrypt_queue *zq, *pref_zq; struct ap_message ap_msg; + unsigned int weight, pref_weight; + unsigned int func_code; + unsigned short *domain; + int rc; - rc = get_cprb_fc(xcRB, &ap_msg, &func_code); + rc = get_cprb_fc(xcRB, &ap_msg, &func_code, &domain); if (rc) return rc; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - if (!zdev->online || !zdev->ops->send_cprb || - (zdev->ops->variant == MSGTYPE06_VARIANT_EP11) || - (xcRB->user_defined != AUTOSELECT && - AP_QID_DEVICE(zdev->ap_dev->qid) != xcRB->user_defined)) + pref_zc = NULL; + pref_zq = NULL; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + /* Check for online CCA cards */ + if (!zc->online || !(zc->card->functions & 0x10000000)) continue; - - weight = speed_idx_cca(func_code) * zdev->speed_rating[SECKEY]; - if (!pref_zdev) { - pref_zdev = zdev; - pref_weight = weight; + /* Check for user selected CCA card */ + if (xcRB->user_defined != AUTOSELECT && + xcRB->user_defined != zc->card->id) continue; - } - if ((pref_zdev->load + pref_weight) > (zdev->load + weight)) { - pref_zdev = zdev; - pref_weight = weight; + /* get weight index of the card device */ + weight = speed_idx_cca(func_code) * zc->speed_rating[SECKEY]; + if (pref_zc && atomic_read(&zc->load) + weight >= + atomic_read(&pref_zc->load) + pref_weight) continue; + for_each_zcrypt_queue(zq, zc) { + /* check if device is online and eligible */ + if (!zq->online || + ((*domain != (unsigned short) AUTOSELECT) && + (*domain != AP_QID_QUEUE(zq->queue->qid)))) + continue; + if (pref_zq && atomic_read(&zq->load) + weight >= + atomic_read(&pref_zq->load) + pref_weight) + continue; + pref_zc = zc; + pref_zq = zq; + pref_weight = weight; } - if ((pref_zdev->load + pref_weight) <= zdev->load) - break; /* Load on remaining devices too high - abort */ } - if (!pref_zdev) { - spin_unlock_bh(&zcrypt_device_lock); + pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + + if (!pref_zq) return -ENODEV; - } - __zcrypt_decrease_preference(pref_zdev, pref_weight); - zcrypt_device_get(pref_zdev); - get_device(&pref_zdev->ap_dev->device); - pref_zdev->request_count++; - if (try_module_get(pref_zdev->ap_dev->drv->driver.owner)) { - spin_unlock_bh(&zcrypt_device_lock); - rc = pref_zdev->ops->send_cprb(pref_zdev, xcRB, &ap_msg); - spin_lock_bh(&zcrypt_device_lock); - module_put(pref_zdev->ap_dev->drv->driver.owner); - } else - rc = -EAGAIN; - pref_zdev->request_count--; - __zcrypt_increase_preference(pref_zdev, pref_weight); - put_device(&pref_zdev->ap_dev->device); - zcrypt_device_put(pref_zdev); - spin_unlock_bh(&zcrypt_device_lock); + + /* in case of auto select, provide the correct domain */ + if (*domain == (unsigned short) AUTOSELECT) + *domain = AP_QID_QUEUE(pref_zq->queue->qid); + + rc = pref_zq->ops->send_cprb(pref_zq, xcRB, &ap_msg); + + spin_lock(&zcrypt_list_lock); + zcrypt_drop_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); return rc; } -struct ep11_target_dev_list { - unsigned short targets_num; - struct ep11_target_dev *targets; -}; - -static bool is_desired_ep11dev(unsigned int dev_qid, - struct ep11_target_dev_list dev_list) +static bool is_desired_ep11_card(unsigned int dev_id, + unsigned short target_num, + struct ep11_target_dev *targets) { - int n; + while (target_num-- > 0) { + if (dev_id == targets->ap_id) + return true; + targets++; + } + return false; +} - for (n = 0; n < dev_list.targets_num; n++, dev_list.targets++) { - if ((AP_QID_DEVICE(dev_qid) == dev_list.targets->ap_id) && - (AP_QID_QUEUE(dev_qid) == dev_list.targets->dom_id)) { +static bool is_desired_ep11_queue(unsigned int dev_qid, + unsigned short target_num, + struct ep11_target_dev *targets) +{ + while (target_num-- > 0) { + if (AP_MKQID(targets->ap_id, targets->dom_id) == dev_qid) return true; - } + targets++; } return false; } static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb) { - struct zcrypt_device *zdev, *pref_zdev = NULL; + struct zcrypt_card *zc, *pref_zc; + struct zcrypt_queue *zq, *pref_zq; + struct ep11_target_dev *targets; + unsigned short target_num; + unsigned int weight, pref_weight; + unsigned int func_code; struct ap_message ap_msg; - unsigned int weight = 0, func_code = 0, pref_weight = 0; - bool autoselect = false; int rc; - struct ep11_target_dev_list ep11_dev_list = { - .targets_num = 0x00, - .targets = NULL, - }; - ep11_dev_list.targets_num = (unsigned short) xcrb->targets_num; + target_num = (unsigned short) xcrb->targets_num; /* empty list indicates autoselect (all available targets) */ - if (ep11_dev_list.targets_num == 0) - autoselect = true; - else { - ep11_dev_list.targets = kcalloc((unsigned short) - xcrb->targets_num, - sizeof(struct ep11_target_dev), - GFP_KERNEL); - if (!ep11_dev_list.targets) + targets = NULL; + if (target_num != 0) { + struct ep11_target_dev __user *uptr; + + targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL); + if (!targets) return -ENOMEM; - if (copy_from_user(ep11_dev_list.targets, - (struct ep11_target_dev __force __user *) - xcrb->targets, xcrb->targets_num * - sizeof(struct ep11_target_dev))) + uptr = (struct ep11_target_dev __force __user *) xcrb->targets; + if (copy_from_user(targets, uptr, + target_num * sizeof(*targets))) return -EFAULT; } rc = get_ep11cprb_fc(xcrb, &ap_msg, &func_code); if (rc) - return rc; + goto out_free; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - /* check if device is eligible */ - if (!zdev->online || - zdev->ops->variant != MSGTYPE06_VARIANT_EP11) + pref_zc = NULL; + pref_zq = NULL; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + /* Check for online EP11 cards */ + if (!zc->online || !(zc->card->functions & 0x04000000)) continue; - - /* check if device is selected as valid target */ - if (!is_desired_ep11dev(zdev->ap_dev->qid, ep11_dev_list) && - !autoselect) + /* Check for user selected EP11 card */ + if (targets && + !is_desired_ep11_card(zc->card->id, target_num, targets)) continue; - - weight = speed_idx_ep11(func_code) * zdev->speed_rating[SECKEY]; - if (!pref_zdev) { - pref_zdev = zdev; - pref_weight = weight; + /* get weight index of the card device */ + weight = speed_idx_ep11(func_code) * zc->speed_rating[SECKEY]; + if (pref_zc && atomic_read(&zc->load) + weight >= + atomic_read(&pref_zc->load) + pref_weight) continue; - } - if ((pref_zdev->load + pref_weight) > (zdev->load + weight)) { - pref_zdev = zdev; + for_each_zcrypt_queue(zq, zc) { + /* check if device is online and eligible */ + if (!zq->online || + (targets && + !is_desired_ep11_queue(zq->queue->qid, + target_num, targets))) + continue; + if (pref_zq && atomic_read(&zq->load) + weight >= + atomic_read(&pref_zq->load) + pref_weight) + continue; + pref_zc = zc; + pref_zq = zq; pref_weight = weight; - continue; } - if ((pref_zdev->load + pref_weight) <= zdev->load) - break; /* Load on remaining devices too high - abort */ - } - if (!pref_zdev) { - spin_unlock_bh(&zcrypt_device_lock); - return -ENODEV; } + pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); - zcrypt_device_get(pref_zdev); - get_device(&pref_zdev->ap_dev->device); - pref_zdev->request_count++; - if (try_module_get(pref_zdev->ap_dev->drv->driver.owner)) { - spin_unlock_bh(&zcrypt_device_lock); - rc = pref_zdev->ops->send_ep11_cprb(pref_zdev, xcrb, &ap_msg); - spin_lock_bh(&zcrypt_device_lock); - module_put(pref_zdev->ap_dev->drv->driver.owner); - } else { - rc = -EAGAIN; + if (!pref_zq) { + rc = -ENODEV; + goto out_free; } - pref_zdev->request_count--; - put_device(&pref_zdev->ap_dev->device); - zcrypt_device_put(pref_zdev); - spin_unlock_bh(&zcrypt_device_lock); + + rc = pref_zq->ops->send_ep11_cprb(pref_zq, xcrb, &ap_msg); + + spin_lock(&zcrypt_list_lock); + zcrypt_drop_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + +out_free: + kfree(targets); return rc; } static long zcrypt_rng(char *buffer) { - struct zcrypt_device *zdev, *pref_zdev = NULL; + struct zcrypt_card *zc, *pref_zc; + struct zcrypt_queue *zq, *pref_zq; + unsigned int weight, pref_weight; + unsigned int func_code; struct ap_message ap_msg; - unsigned int weight = 0, func_code = 0, pref_weight = 0; + unsigned int domain; int rc; - rc = get_rng_fc(&ap_msg, &func_code); + rc = get_rng_fc(&ap_msg, &func_code, &domain); if (rc) return rc; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - if (!zdev->online || !zdev->ops->rng) + pref_zc = NULL; + pref_zq = NULL; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + /* Check for online CCA cards */ + if (!zc->online || !(zc->card->functions & 0x10000000)) continue; - - weight = zdev->speed_rating[func_code]; - if (!pref_zdev) { - pref_zdev = zdev; - pref_weight = weight; + /* get weight index of the card device */ + weight = zc->speed_rating[func_code]; + if (pref_zc && atomic_read(&zc->load) + weight >= + atomic_read(&pref_zc->load) + pref_weight) continue; - } - if ((pref_zdev->load + pref_weight) > (zdev->load + weight)) { - pref_zdev = zdev; + for_each_zcrypt_queue(zq, zc) { + /* check if device is online and eligible */ + if (!zq->online) + continue; + if (pref_zq && atomic_read(&zq->load) + weight >= + atomic_read(&pref_zq->load) + pref_weight) + continue; + pref_zc = zc; + pref_zq = zq; pref_weight = weight; - continue; } - if ((pref_zdev->load + pref_weight) <= zdev->load) - break; /* Load on remaining devices too high - abort */ } - if (!pref_zdev) { - spin_unlock_bh(&zcrypt_device_lock); + pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); + + if (!pref_zq) return -ENODEV; - } - zcrypt_device_get(pref_zdev); - get_device(&pref_zdev->ap_dev->device); - pref_zdev->request_count++; - if (try_module_get(pref_zdev->ap_dev->drv->driver.owner)) { - spin_unlock_bh(&zcrypt_device_lock); - rc = pref_zdev->ops->rng(pref_zdev, buffer, &ap_msg); - spin_lock_bh(&zcrypt_device_lock); - module_put(pref_zdev->ap_dev->drv->driver.owner); - } else - rc = -EAGAIN; - pref_zdev->request_count--; - put_device(&pref_zdev->ap_dev->device); - zcrypt_device_put(pref_zdev); - spin_unlock_bh(&zcrypt_device_lock); + rc = pref_zq->ops->rng(pref_zq, buffer, &ap_msg); + + spin_lock(&zcrypt_list_lock); + zcrypt_drop_queue(pref_zc, pref_zq, weight); + spin_unlock(&zcrypt_list_lock); return rc; } static void zcrypt_status_mask(char status[AP_DEVICES]) { - struct zcrypt_device *zdev; + struct zcrypt_card *zc; + struct zcrypt_queue *zq; memset(status, 0, sizeof(char) * AP_DEVICES); - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) - status[AP_QID_DEVICE(zdev->ap_dev->qid)] = - zdev->online ? zdev->user_space_type : 0x0d; - spin_unlock_bh(&zcrypt_device_lock); + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + status[AP_QID_CARD(zq->queue->qid)] = + zc->online ? zc->user_space_type : 0x0d; + } + } + spin_unlock(&zcrypt_list_lock); } static void zcrypt_qdepth_mask(char qdepth[AP_DEVICES]) { - struct zcrypt_device *zdev; + struct zcrypt_card *zc; + struct zcrypt_queue *zq; memset(qdepth, 0, sizeof(char) * AP_DEVICES); - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - spin_lock(&zdev->ap_dev->lock); - qdepth[AP_QID_DEVICE(zdev->ap_dev->qid)] = - zdev->ap_dev->pendingq_count + - zdev->ap_dev->requestq_count; - spin_unlock(&zdev->ap_dev->lock); + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + spin_lock(&zq->queue->lock); + qdepth[AP_QID_CARD(zq->queue->qid)] = + zq->queue->pendingq_count + + zq->queue->requestq_count; + spin_unlock(&zq->queue->lock); + } } - spin_unlock_bh(&zcrypt_device_lock); + spin_unlock(&zcrypt_list_lock); } static void zcrypt_perdev_reqcnt(int reqcnt[AP_DEVICES]) { - struct zcrypt_device *zdev; + struct zcrypt_card *zc; + struct zcrypt_queue *zq; memset(reqcnt, 0, sizeof(int) * AP_DEVICES); - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - spin_lock(&zdev->ap_dev->lock); - reqcnt[AP_QID_DEVICE(zdev->ap_dev->qid)] = - zdev->ap_dev->total_request_count; - spin_unlock(&zdev->ap_dev->lock); + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + spin_lock(&zq->queue->lock); + reqcnt[AP_QID_CARD(zq->queue->qid)] = + zq->queue->total_request_count; + spin_unlock(&zq->queue->lock); + } } - spin_unlock_bh(&zcrypt_device_lock); + spin_unlock(&zcrypt_list_lock); } static int zcrypt_pendingq_count(void) { - struct zcrypt_device *zdev; - int pendingq_count = 0; - - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - spin_lock(&zdev->ap_dev->lock); - pendingq_count += zdev->ap_dev->pendingq_count; - spin_unlock(&zdev->ap_dev->lock); + struct zcrypt_card *zc; + struct zcrypt_queue *zq; + int pendingq_count; + + pendingq_count = 0; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + spin_lock(&zq->queue->lock); + pendingq_count += zq->queue->pendingq_count; + spin_unlock(&zq->queue->lock); + } } - spin_unlock_bh(&zcrypt_device_lock); + spin_unlock(&zcrypt_list_lock); return pendingq_count; } static int zcrypt_requestq_count(void) { - struct zcrypt_device *zdev; - int requestq_count = 0; - - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) { - spin_lock(&zdev->ap_dev->lock); - requestq_count += zdev->ap_dev->requestq_count; - spin_unlock(&zdev->ap_dev->lock); + struct zcrypt_card *zc; + struct zcrypt_queue *zq; + int requestq_count; + + requestq_count = 0; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + spin_lock(&zq->queue->lock); + requestq_count += zq->queue->requestq_count; + spin_unlock(&zq->queue->lock); + } } - spin_unlock_bh(&zcrypt_device_lock); + spin_unlock(&zcrypt_list_lock); return requestq_count; } static int zcrypt_count_type(int type) { - struct zcrypt_device *zdev; - int device_count = 0; - - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) - if (zdev->user_space_type == type) + struct zcrypt_card *zc; + struct zcrypt_queue *zq; + int device_count; + + device_count = 0; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + if (zc->card->id != type) + continue; + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; device_count++; - spin_unlock_bh(&zcrypt_device_lock); + } + } + spin_unlock(&zcrypt_list_lock); return device_count; } @@ -1313,29 +1126,36 @@ static int zcrypt_proc_open(struct inode *inode, struct file *file) static void zcrypt_disable_card(int index) { - struct zcrypt_device *zdev; + struct zcrypt_card *zc; + struct zcrypt_queue *zq; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) - if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) { - zdev->online = 0; - ap_flush_queue(zdev->ap_dev); - break; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + zq->online = 0; + ap_flush_queue(zq->queue); } - spin_unlock_bh(&zcrypt_device_lock); + } + spin_unlock(&zcrypt_list_lock); } static void zcrypt_enable_card(int index) { - struct zcrypt_device *zdev; + struct zcrypt_card *zc; + struct zcrypt_queue *zq; - spin_lock_bh(&zcrypt_device_lock); - list_for_each_entry(zdev, &zcrypt_device_list, list) - if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) { - zdev->online = 1; - break; + spin_lock(&zcrypt_list_lock); + for_each_zcrypt_card(zc) { + for_each_zcrypt_queue(zq, zc) { + if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) + continue; + zq->online = 1; + ap_flush_queue(zq->queue); } - spin_unlock_bh(&zcrypt_device_lock); + } + spin_unlock(&zcrypt_list_lock); } static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer, @@ -1433,7 +1253,7 @@ static struct hwrng zcrypt_rng_dev = { .quality = 990, }; -static int zcrypt_rng_device_add(void) +int zcrypt_rng_device_add(void) { int rc = 0; @@ -1463,7 +1283,7 @@ out: return rc; } -static void zcrypt_rng_device_remove(void) +void zcrypt_rng_device_remove(void) { mutex_lock(&zcrypt_rng_mutex); zcrypt_rng_device_count--; @@ -1486,6 +1306,10 @@ int __init zcrypt_debug_init(void) debug_register_view(zcrypt_dbf_devices, &debug_hex_ascii_view); debug_set_level(zcrypt_dbf_devices, DBF_ERR); + zcrypt_dbf_cards = debug_register("zcrypt_cards", 1, 1, 16); + debug_register_view(zcrypt_dbf_cards, &debug_hex_ascii_view); + debug_set_level(zcrypt_dbf_cards, DBF_ERR); + return 0; } @@ -1517,7 +1341,8 @@ int __init zcrypt_api_init(void) goto out; /* Set up the proc file system */ - zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, &zcrypt_proc_fops); + zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, + &zcrypt_proc_fops); if (!zcrypt_entry) { rc = -ENOMEM; goto out_misc; diff --git a/drivers/s390/crypto/zcrypt_api.h b/drivers/s390/crypto/zcrypt_api.h index 3d0d1e25d751..4fb892b99f41 100644 --- a/drivers/s390/crypto/zcrypt_api.h +++ b/drivers/s390/crypto/zcrypt_api.h @@ -88,7 +88,7 @@ struct ica_z90_status { * Identifier for Crypto Request Performance Index */ enum crypto_ops { - MEX_1K = 0, + MEX_1K, MEX_2K, MEX_4K, CRT_1K, @@ -99,43 +99,56 @@ enum crypto_ops { NUM_OPS }; -struct zcrypt_device; +struct zcrypt_queue; struct zcrypt_ops { - long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *); - long (*rsa_modexpo_crt)(struct zcrypt_device *, + long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *); + long (*rsa_modexpo_crt)(struct zcrypt_queue *, struct ica_rsa_modexpo_crt *); - long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *, + long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *, struct ap_message *); - long (*send_ep11_cprb)(struct zcrypt_device *, struct ep11_urb *, + long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *, struct ap_message *); - long (*rng)(struct zcrypt_device *, char *, struct ap_message *); + long (*rng)(struct zcrypt_queue *, char *, struct ap_message *); struct list_head list; /* zcrypt ops list. */ struct module *owner; int variant; char name[128]; }; -struct zcrypt_device { +struct zcrypt_card { struct list_head list; /* Device list. */ - spinlock_t lock; /* Per device lock. */ + struct list_head zqueues; /* List of zcrypt queues */ struct kref refcount; /* device refcounting */ - struct ap_device *ap_dev; /* The "real" ap device. */ - struct zcrypt_ops *ops; /* Crypto operations. */ + struct ap_card *card; /* The "real" ap card device. */ int online; /* User online/offline */ int user_space_type; /* User space device id. */ char *type_string; /* User space device name. */ int min_mod_size; /* Min number of bits. */ int max_mod_size; /* Max number of bits. */ - int short_crt; /* Card has crt length restriction. */ + int max_exp_bit_length; int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */ - int load; /* Utilization of the crypto device */ + atomic_t load; /* Utilization of the crypto device */ + + int request_count; /* # current requests. */ + + debug_info_t *dbf_area; /* debugging */ +}; + +struct zcrypt_queue { + struct list_head list; /* Device list. */ + struct kref refcount; /* device refcounting */ + struct zcrypt_card *zcard; + struct zcrypt_ops *ops; /* Crypto operations. */ + struct ap_queue *queue; /* The "real" ap queue device. */ + int online; /* User online/offline */ + + atomic_t load; /* Utilization of the crypto device */ int request_count; /* # current requests. */ struct ap_message reply; /* Per-device reply structure. */ - int max_exp_bit_length; debug_info_t *dbf_area; /* debugging */ }; @@ -143,12 +156,43 @@ struct zcrypt_device { /* transport layer rescanning */ extern atomic_t zcrypt_rescan_req; -struct zcrypt_device *zcrypt_device_alloc(size_t); -void zcrypt_device_free(struct zcrypt_device *); -void zcrypt_device_get(struct zcrypt_device *); -int zcrypt_device_put(struct zcrypt_device *); -int zcrypt_device_register(struct zcrypt_device *); -void zcrypt_device_unregister(struct zcrypt_device *); +extern spinlock_t zcrypt_list_lock; +extern int zcrypt_device_count; +extern struct list_head zcrypt_card_list; + +extern debug_info_t *zcrypt_dbf_common; +extern debug_info_t *zcrypt_dbf_devices; +extern debug_info_t *zcrypt_dbf_cards; + +#define for_each_zcrypt_card(_zc) \ + list_for_each_entry(_zc, &zcrypt_card_list, list) + +#define for_each_zcrypt_queue(_zq, _zc) \ + list_for_each_entry(_zq, &(_zc)->zqueues, list) + +struct zcrypt_card *zcrypt_card_alloc(void); +void zcrypt_card_free(struct zcrypt_card *); +void zcrypt_card_get(struct zcrypt_card *); +int zcrypt_card_put(struct zcrypt_card *); +int zcrypt_card_register(struct zcrypt_card *); +void zcrypt_card_unregister(struct zcrypt_card *); +struct zcrypt_card *zcrypt_card_get_best(unsigned int *, + unsigned int, unsigned int); +void zcrypt_card_put_best(struct zcrypt_card *, unsigned int); + +struct zcrypt_queue *zcrypt_queue_alloc(size_t); +void zcrypt_queue_free(struct zcrypt_queue *); +void zcrypt_queue_get(struct zcrypt_queue *); +int zcrypt_queue_put(struct zcrypt_queue *); +int zcrypt_queue_register(struct zcrypt_queue *); +void zcrypt_queue_unregister(struct zcrypt_queue *); +void zcrypt_queue_force_online(struct zcrypt_queue *, int); +struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int); +void zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int); + +int zcrypt_rng_device_add(void); +void zcrypt_rng_device_remove(void); + void zcrypt_msgtype_register(struct zcrypt_ops *); void zcrypt_msgtype_unregister(struct zcrypt_ops *); struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int); diff --git a/drivers/s390/crypto/zcrypt_card.c b/drivers/s390/crypto/zcrypt_card.c new file mode 100644 index 000000000000..57873d775e95 --- /dev/null +++ b/drivers/s390/crypto/zcrypt_card.c @@ -0,0 +1,181 @@ +/* + * zcrypt 2.1.0 + * + * Copyright IBM Corp. 2001, 2012 + * Author(s): Robert Burroughs + * Eric Rossman (edrossma@us.ibm.com) + * Cornelia Huck <cornelia.huck@de.ibm.com> + * + * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) + * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> + * Ralph Wuerthner <rwuerthn@de.ibm.com> + * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/compat.h> +#include <linux/slab.h> +#include <linux/atomic.h> +#include <linux/uaccess.h> +#include <linux/hw_random.h> +#include <linux/debugfs.h> +#include <asm/debug.h> + +#include "zcrypt_debug.h" +#include "zcrypt_api.h" + +#include "zcrypt_msgtype6.h" +#include "zcrypt_msgtype50.h" + +/* + * Device attributes common for all crypto card devices. + */ + +static ssize_t zcrypt_card_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct zcrypt_card *zc = to_ap_card(dev)->private; + + return snprintf(buf, PAGE_SIZE, "%s\n", zc->type_string); +} + +static DEVICE_ATTR(type, 0444, zcrypt_card_type_show, NULL); + +static ssize_t zcrypt_card_online_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct zcrypt_card *zc = to_ap_card(dev)->private; + + return snprintf(buf, PAGE_SIZE, "%d\n", zc->online); +} + +static ssize_t zcrypt_card_online_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct zcrypt_card *zc = to_ap_card(dev)->private; + struct zcrypt_queue *zq; + int online, id; + + if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) + return -EINVAL; + + zc->online = online; + id = zc->card->id; + ZCRYPT_DBF_DEV(DBF_INFO, zc, "card%02xo%dman", id, online); + spin_lock(&zcrypt_list_lock); + list_for_each_entry(zq, &zc->zqueues, list) + zcrypt_queue_force_online(zq, online); + spin_unlock(&zcrypt_list_lock); + return count; +} + +static DEVICE_ATTR(online, 0644, zcrypt_card_online_show, + zcrypt_card_online_store); + +static struct attribute *zcrypt_card_attrs[] = { + &dev_attr_type.attr, + &dev_attr_online.attr, + NULL, +}; + +static struct attribute_group zcrypt_card_attr_group = { + .attrs = zcrypt_card_attrs, +}; + +struct zcrypt_card *zcrypt_card_alloc(void) +{ + struct zcrypt_card *zc; + + zc = kzalloc(sizeof(struct zcrypt_card), GFP_KERNEL); + if (!zc) + return NULL; + INIT_LIST_HEAD(&zc->list); + INIT_LIST_HEAD(&zc->zqueues); + zc->dbf_area = zcrypt_dbf_cards; + kref_init(&zc->refcount); + return zc; +} +EXPORT_SYMBOL(zcrypt_card_alloc); + +void zcrypt_card_free(struct zcrypt_card *zc) +{ + kfree(zc); +} +EXPORT_SYMBOL(zcrypt_card_free); + +static void zcrypt_card_release(struct kref *kref) +{ + struct zcrypt_card *zdev = + container_of(kref, struct zcrypt_card, refcount); + zcrypt_card_free(zdev); +} + +void zcrypt_card_get(struct zcrypt_card *zc) +{ + kref_get(&zc->refcount); +} +EXPORT_SYMBOL(zcrypt_card_get); + +int zcrypt_card_put(struct zcrypt_card *zc) +{ + return kref_put(&zc->refcount, zcrypt_card_release); +} +EXPORT_SYMBOL(zcrypt_card_put); + +/** + * zcrypt_card_register() - Register a crypto card device. + * @zc: Pointer to a crypto card device + * + * Register a crypto card device. Returns 0 if successful. + */ +int zcrypt_card_register(struct zcrypt_card *zc) +{ + int rc; + + rc = sysfs_create_group(&zc->card->ap_dev.device.kobj, + &zcrypt_card_attr_group); + if (rc) + return rc; + + spin_lock(&zcrypt_list_lock); + list_add_tail(&zc->list, &zcrypt_card_list); + spin_unlock(&zcrypt_list_lock); + + zc->online = 1; + return rc; +} +EXPORT_SYMBOL(zcrypt_card_register); + +/** + * zcrypt_card_unregister(): Unregister a crypto card device. + * @zc: Pointer to crypto card device + * + * Unregister a crypto card device. + */ +void zcrypt_card_unregister(struct zcrypt_card *zc) +{ + spin_lock(&zcrypt_list_lock); + list_del_init(&zc->list); + spin_unlock(&zcrypt_list_lock); + sysfs_remove_group(&zc->card->ap_dev.device.kobj, + &zcrypt_card_attr_group); +} +EXPORT_SYMBOL(zcrypt_card_unregister); diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index 4bb13eadd0f1..c7d48a18199e 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -31,6 +31,7 @@ #include <linux/err.h> #include <linux/atomic.h> #include <asm/uaccess.h> +#include <linux/mod_devicetable.h> #include "ap_bus.h" #include "zcrypt_api.h" @@ -54,108 +55,195 @@ #define CEX2A_CLEANUP_TIME (15*HZ) #define CEX3A_CLEANUP_TIME CEX2A_CLEANUP_TIME -static struct ap_device_id zcrypt_cex2a_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_CEX2A) }, - { AP_DEVICE(AP_DEVICE_TYPE_CEX3A) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_ids); MODULE_AUTHOR("IBM Corporation"); MODULE_DESCRIPTION("CEX2A Cryptographic Coprocessor device driver, " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); -static int zcrypt_cex2a_probe(struct ap_device *ap_dev); -static void zcrypt_cex2a_remove(struct ap_device *ap_dev); +static struct ap_device_id zcrypt_cex2a_card_ids[] = { + { .dev_type = AP_DEVICE_TYPE_CEX2A, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX3A, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { /* end of list */ }, +}; + +MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_card_ids); -static struct ap_driver zcrypt_cex2a_driver = { - .probe = zcrypt_cex2a_probe, - .remove = zcrypt_cex2a_remove, - .ids = zcrypt_cex2a_ids, - .request_timeout = CEX2A_CLEANUP_TIME, +static struct ap_device_id zcrypt_cex2a_queue_ids[] = { + { .dev_type = AP_DEVICE_TYPE_CEX2A, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX3A, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { /* end of list */ }, }; +MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_queue_ids); + /** - * Probe function for CEX2A cards. It always accepts the AP device - * since the bus_match already checked the hardware type. + * Probe function for CEX2A card devices. It always accepts the AP device + * since the bus_match already checked the card type. * @ap_dev: pointer to the AP device. */ -static int zcrypt_cex2a_probe(struct ap_device *ap_dev) +static int zcrypt_cex2a_card_probe(struct ap_device *ap_dev) { - struct zcrypt_device *zdev = NULL; - int CEX2A_SPEED_IDX[] = { 800, 1000, 2000, 900, 1200, 2400, 0}; - int CEX3A_SPEED_IDX[] = { 400, 500, 1000, 450, 550, 1200, 0}; + /* + * Normalized speed ratings per crypto adapter + * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY + */ + static const int CEX2A_SPEED_IDX[] = { + 800, 1000, 2000, 900, 1200, 2400, 0, 0}; + static const int CEX3A_SPEED_IDX[] = { + 400, 500, 1000, 450, 550, 1200, 0, 0}; + + struct ap_card *ac = to_ap_card(&ap_dev->device); + struct zcrypt_card *zc; int rc = 0; + zc = zcrypt_card_alloc(); + if (!zc) + return -ENOMEM; + zc->card = ac; + ac->private = zc; + + if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX2A) { + zc->min_mod_size = CEX2A_MIN_MOD_SIZE; + zc->max_mod_size = CEX2A_MAX_MOD_SIZE; + memcpy(zc->speed_rating, CEX2A_SPEED_IDX, + sizeof(CEX2A_SPEED_IDX)); + zc->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; + zc->type_string = "CEX2A"; + zc->user_space_type = ZCRYPT_CEX2A; + } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX3A) { + zc->min_mod_size = CEX2A_MIN_MOD_SIZE; + zc->max_mod_size = CEX2A_MAX_MOD_SIZE; + zc->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; + if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) && + ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) { + zc->max_mod_size = CEX3A_MAX_MOD_SIZE; + zc->max_exp_bit_length = CEX3A_MAX_MOD_SIZE; + } + memcpy(zc->speed_rating, CEX3A_SPEED_IDX, + sizeof(CEX3A_SPEED_IDX)); + zc->type_string = "CEX3A"; + zc->user_space_type = ZCRYPT_CEX3A; + } else { + zcrypt_card_free(zc); + return -ENODEV; + } + zc->online = 1; + + rc = zcrypt_card_register(zc); + if (rc) { + ac->private = NULL; + zcrypt_card_free(zc); + } + + return rc; +} + +/** + * This is called to remove the CEX2A card driver information + * if an AP card device is removed. + */ +static void zcrypt_cex2a_card_remove(struct ap_device *ap_dev) +{ + struct zcrypt_card *zc = to_ap_card(&ap_dev->device)->private; + + if (zc) + zcrypt_card_unregister(zc); +} + +static struct ap_driver zcrypt_cex2a_card_driver = { + .probe = zcrypt_cex2a_card_probe, + .remove = zcrypt_cex2a_card_remove, + .ids = zcrypt_cex2a_card_ids, +}; + +/** + * Probe function for CEX2A queue devices. It always accepts the AP device + * since the bus_match already checked the queue type. + * @ap_dev: pointer to the AP device. + */ +static int zcrypt_cex2a_queue_probe(struct ap_device *ap_dev) +{ + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq = NULL; + int rc; + switch (ap_dev->device_type) { case AP_DEVICE_TYPE_CEX2A: - zdev = zcrypt_device_alloc(CEX2A_MAX_RESPONSE_SIZE); - if (!zdev) + zq = zcrypt_queue_alloc(CEX2A_MAX_RESPONSE_SIZE); + if (!zq) return -ENOMEM; - zdev->user_space_type = ZCRYPT_CEX2A; - zdev->type_string = "CEX2A"; - zdev->min_mod_size = CEX2A_MIN_MOD_SIZE; - zdev->max_mod_size = CEX2A_MAX_MOD_SIZE; - zdev->short_crt = 1; - memcpy(zdev->speed_rating, CEX2A_SPEED_IDX, - sizeof(CEX2A_SPEED_IDX)); - zdev->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; break; case AP_DEVICE_TYPE_CEX3A: - zdev = zcrypt_device_alloc(CEX3A_MAX_RESPONSE_SIZE); - if (!zdev) + zq = zcrypt_queue_alloc(CEX3A_MAX_RESPONSE_SIZE); + if (!zq) return -ENOMEM; - zdev->user_space_type = ZCRYPT_CEX3A; - zdev->type_string = "CEX3A"; - zdev->min_mod_size = CEX2A_MIN_MOD_SIZE; - zdev->max_mod_size = CEX2A_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX2A_MAX_MOD_SIZE; - if (ap_test_bit(&ap_dev->functions, AP_FUNC_MEX4K) && - ap_test_bit(&ap_dev->functions, AP_FUNC_CRT4K)) { - zdev->max_mod_size = CEX3A_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX3A_MAX_MOD_SIZE; - } - zdev->short_crt = 1; - memcpy(zdev->speed_rating, CEX3A_SPEED_IDX, - sizeof(CEX3A_SPEED_IDX)); break; } - if (!zdev) + if (!zq) return -ENODEV; - zdev->ops = zcrypt_msgtype(MSGTYPE50_NAME, MSGTYPE50_VARIANT_DEFAULT); - zdev->ap_dev = ap_dev; - zdev->online = 1; - zdev->load = zdev->speed_rating[0]; - ap_device_init_reply(ap_dev, &zdev->reply); - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); + zq->ops = zcrypt_msgtype(MSGTYPE50_NAME, MSGTYPE50_VARIANT_DEFAULT); + zq->queue = aq; + zq->online = 1; + atomic_set(&zq->load, 0); + ap_queue_init_reply(aq, &zq->reply); + aq->request_timeout = CEX2A_CLEANUP_TIME, + aq->private = zq; + rc = zcrypt_queue_register(zq); if (rc) { - ap_dev->private = NULL; - zcrypt_device_free(zdev); + aq->private = NULL; + zcrypt_queue_free(zq); } + return rc; } /** - * This is called to remove the extended CEX2A driver information - * if an AP device is removed. + * This is called to remove the CEX2A queue driver information + * if an AP queue device is removed. */ -static void zcrypt_cex2a_remove(struct ap_device *ap_dev) +static void zcrypt_cex2a_queue_remove(struct ap_device *ap_dev) { - struct zcrypt_device *zdev = ap_dev->private; + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq = aq->private; - zcrypt_device_unregister(zdev); + ap_queue_remove(aq); + if (zq) + zcrypt_queue_unregister(zq); } +static struct ap_driver zcrypt_cex2a_queue_driver = { + .probe = zcrypt_cex2a_queue_probe, + .remove = zcrypt_cex2a_queue_remove, + .suspend = ap_queue_suspend, + .resume = ap_queue_resume, + .ids = zcrypt_cex2a_queue_ids, +}; + int __init zcrypt_cex2a_init(void) { - return ap_driver_register(&zcrypt_cex2a_driver, THIS_MODULE, "cex2a"); + int rc; + + rc = ap_driver_register(&zcrypt_cex2a_card_driver, + THIS_MODULE, "cex2acard"); + if (rc) + return rc; + + rc = ap_driver_register(&zcrypt_cex2a_queue_driver, + THIS_MODULE, "cex2aqueue"); + if (rc) + ap_driver_unregister(&zcrypt_cex2a_card_driver); + + return rc; } void __exit zcrypt_cex2a_exit(void) { - ap_driver_unregister(&zcrypt_cex2a_driver); + ap_driver_unregister(&zcrypt_cex2a_queue_driver); + ap_driver_unregister(&zcrypt_cex2a_card_driver); } module_init(zcrypt_cex2a_init); diff --git a/drivers/s390/crypto/zcrypt_cex4.c b/drivers/s390/crypto/zcrypt_cex4.c index ff28ad543c30..4e91163d70a6 100644 --- a/drivers/s390/crypto/zcrypt_cex4.c +++ b/drivers/s390/crypto/zcrypt_cex4.c @@ -9,6 +9,7 @@ #include <linux/err.h> #include <linux/atomic.h> #include <linux/uaccess.h> +#include <linux/mod_devicetable.h> #include "ap_bus.h" #include "zcrypt_api.h" @@ -34,160 +35,246 @@ */ #define CEX4_CLEANUP_TIME (900*HZ) -static struct ap_device_id zcrypt_cex4_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_CEX4) }, - { AP_DEVICE(AP_DEVICE_TYPE_CEX5) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_cex4_ids); MODULE_AUTHOR("IBM Corporation"); MODULE_DESCRIPTION("CEX4 Cryptographic Card device driver, " \ "Copyright IBM Corp. 2012"); MODULE_LICENSE("GPL"); -static int zcrypt_cex4_probe(struct ap_device *ap_dev); -static void zcrypt_cex4_remove(struct ap_device *ap_dev); +static struct ap_device_id zcrypt_cex4_card_ids[] = { + { .dev_type = AP_DEVICE_TYPE_CEX4, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX5, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { /* end of list */ }, +}; + +MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids); -static struct ap_driver zcrypt_cex4_driver = { - .probe = zcrypt_cex4_probe, - .remove = zcrypt_cex4_remove, - .ids = zcrypt_cex4_ids, - .request_timeout = CEX4_CLEANUP_TIME, +static struct ap_device_id zcrypt_cex4_queue_ids[] = { + { .dev_type = AP_DEVICE_TYPE_CEX4, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX5, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { /* end of list */ }, }; +MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids); + /** - * Probe function for CEX4 cards. It always accepts the AP device + * Probe function for CEX4 card device. It always accepts the AP device * since the bus_match already checked the hardware type. * @ap_dev: pointer to the AP device. */ -static int zcrypt_cex4_probe(struct ap_device *ap_dev) +static int zcrypt_cex4_card_probe(struct ap_device *ap_dev) { - struct zcrypt_device *zdev = NULL; /* * Normalized speed ratings per crypto adapter * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY */ - int CEX4A_SPEED_IDX[] = { 5, 6, 59, 20, 115, 581, 0, 0}; - int CEX5A_SPEED_IDX[] = { 3, 3, 6, 8, 32, 218, 0, 0}; - int CEX4C_SPEED_IDX[] = { 24, 25, 82, 41, 138, 1111, 79, 8}; - int CEX5C_SPEED_IDX[] = { 10, 14, 23, 17, 45, 242, 63, 4}; - int CEX4P_SPEED_IDX[] = {142, 198, 1852, 203, 331, 1563, 0, 8}; - int CEX5P_SPEED_IDX[] = { 49, 67, 131, 52, 85, 287, 0, 4}; + static const int CEX4A_SPEED_IDX[] = { + 5, 6, 59, 20, 115, 581, 0, 0}; + static const int CEX5A_SPEED_IDX[] = { + 3, 3, 6, 8, 32, 218, 0, 0}; + static const int CEX4C_SPEED_IDX[] = { + 24, 25, 82, 41, 138, 1111, 79, 8}; + static const int CEX5C_SPEED_IDX[] = { + 10, 14, 23, 17, 45, 242, 63, 4}; + static const int CEX4P_SPEED_IDX[] = { + 142, 198, 1852, 203, 331, 1563, 0, 8}; + static const int CEX5P_SPEED_IDX[] = { + 49, 67, 131, 52, 85, 287, 0, 4}; + + struct ap_card *ac = to_ap_card(&ap_dev->device); + struct zcrypt_card *zc; int rc = 0; - switch (ap_dev->device_type) { - case AP_DEVICE_TYPE_CEX4: - case AP_DEVICE_TYPE_CEX5: - if (ap_test_bit(&ap_dev->functions, AP_FUNC_ACCEL)) { - zdev = zcrypt_device_alloc(CEX4A_MAX_MESSAGE_SIZE); - if (!zdev) - return -ENOMEM; - if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) { - zdev->type_string = "CEX4A"; - memcpy(zdev->speed_rating, CEX4A_SPEED_IDX, - sizeof(CEX4A_SPEED_IDX)); - } else { - zdev->type_string = "CEX5A"; - memcpy(zdev->speed_rating, CEX5A_SPEED_IDX, - sizeof(CEX5A_SPEED_IDX)); - } - zdev->user_space_type = ZCRYPT_CEX3A; - zdev->min_mod_size = CEX4A_MIN_MOD_SIZE; - if (ap_test_bit(&ap_dev->functions, AP_FUNC_MEX4K) && - ap_test_bit(&ap_dev->functions, AP_FUNC_CRT4K)) { - zdev->max_mod_size = - CEX4A_MAX_MOD_SIZE_4K; - zdev->max_exp_bit_length = - CEX4A_MAX_MOD_SIZE_4K; - } else { - zdev->max_mod_size = - CEX4A_MAX_MOD_SIZE_2K; - zdev->max_exp_bit_length = - CEX4A_MAX_MOD_SIZE_2K; - } - zdev->short_crt = 1; - zdev->ops = zcrypt_msgtype(MSGTYPE50_NAME, - MSGTYPE50_VARIANT_DEFAULT); - } else if (ap_test_bit(&ap_dev->functions, AP_FUNC_COPRO)) { - zdev = zcrypt_device_alloc(CEX4C_MAX_MESSAGE_SIZE); - if (!zdev) - return -ENOMEM; - if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) { - zdev->type_string = "CEX4C"; - memcpy(zdev->speed_rating, CEX4C_SPEED_IDX, - sizeof(CEX4C_SPEED_IDX)); - } else { - zdev->type_string = "CEX5C"; - memcpy(zdev->speed_rating, CEX5C_SPEED_IDX, - sizeof(CEX5C_SPEED_IDX)); - } - zdev->user_space_type = ZCRYPT_CEX3C; - zdev->min_mod_size = CEX4C_MIN_MOD_SIZE; - zdev->max_mod_size = CEX4C_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX4C_MAX_MOD_SIZE; - zdev->short_crt = 0; - zdev->ops = zcrypt_msgtype(MSGTYPE06_NAME, - MSGTYPE06_VARIANT_DEFAULT); - } else if (ap_test_bit(&ap_dev->functions, AP_FUNC_EP11)) { - zdev = zcrypt_device_alloc(CEX4C_MAX_MESSAGE_SIZE); - if (!zdev) - return -ENOMEM; - if (ap_dev->device_type == AP_DEVICE_TYPE_CEX4) { - zdev->type_string = "CEX4P"; - memcpy(zdev->speed_rating, CEX4P_SPEED_IDX, - sizeof(CEX4P_SPEED_IDX)); - } else { - zdev->type_string = "CEX5P"; - memcpy(zdev->speed_rating, CEX5P_SPEED_IDX, - sizeof(CEX5P_SPEED_IDX)); - } - zdev->user_space_type = ZCRYPT_CEX4; - zdev->min_mod_size = CEX4C_MIN_MOD_SIZE; - zdev->max_mod_size = CEX4C_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX4C_MAX_MOD_SIZE; - zdev->short_crt = 0; - zdev->ops = zcrypt_msgtype(MSGTYPE06_NAME, - MSGTYPE06_VARIANT_EP11); + zc = zcrypt_card_alloc(); + if (!zc) + return -ENOMEM; + zc->card = ac; + ac->private = zc; + if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) { + if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) { + zc->type_string = "CEX4A"; + zc->user_space_type = ZCRYPT_CEX4; + memcpy(zc->speed_rating, CEX4A_SPEED_IDX, + sizeof(CEX4A_SPEED_IDX)); + } else { + zc->type_string = "CEX5A"; + zc->user_space_type = ZCRYPT_CEX5; + memcpy(zc->speed_rating, CEX5A_SPEED_IDX, + sizeof(CEX5A_SPEED_IDX)); } - break; - } - if (!zdev) + zc->min_mod_size = CEX4A_MIN_MOD_SIZE; + if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) && + ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) { + zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K; + zc->max_exp_bit_length = + CEX4A_MAX_MOD_SIZE_4K; + } else { + zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K; + zc->max_exp_bit_length = + CEX4A_MAX_MOD_SIZE_2K; + } + } else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) { + if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) { + zc->type_string = "CEX4C"; + /* wrong user space type, must be CEX4 + * just keep it for cca compatibility + */ + zc->user_space_type = ZCRYPT_CEX3C; + memcpy(zc->speed_rating, CEX4C_SPEED_IDX, + sizeof(CEX4C_SPEED_IDX)); + } else { + zc->type_string = "CEX5C"; + /* wrong user space type, must be CEX5 + * just keep it for cca compatibility + */ + zc->user_space_type = ZCRYPT_CEX3C; + memcpy(zc->speed_rating, CEX5C_SPEED_IDX, + sizeof(CEX5C_SPEED_IDX)); + } + zc->min_mod_size = CEX4C_MIN_MOD_SIZE; + zc->max_mod_size = CEX4C_MAX_MOD_SIZE; + zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE; + } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) { + if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) { + zc->type_string = "CEX4P"; + zc->user_space_type = ZCRYPT_CEX4; + memcpy(zc->speed_rating, CEX4P_SPEED_IDX, + sizeof(CEX4P_SPEED_IDX)); + } else { + zc->type_string = "CEX5P"; + zc->user_space_type = ZCRYPT_CEX5; + memcpy(zc->speed_rating, CEX5P_SPEED_IDX, + sizeof(CEX5P_SPEED_IDX)); + } + zc->min_mod_size = CEX4C_MIN_MOD_SIZE; + zc->max_mod_size = CEX4C_MAX_MOD_SIZE; + zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE; + } else { + zcrypt_card_free(zc); return -ENODEV; - zdev->ap_dev = ap_dev; - zdev->online = 1; - zdev->load = zdev->speed_rating[0]; - ap_device_init_reply(ap_dev, &zdev->reply); - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); + } + zc->online = 1; + + rc = zcrypt_card_register(zc); if (rc) { - ap_dev->private = NULL; - zcrypt_device_free(zdev); + ac->private = NULL; + zcrypt_card_free(zc); } + return rc; } /** - * This is called to remove the extended CEX4 driver information - * if an AP device is removed. + * This is called to remove the CEX4 card driver information + * if an AP card device is removed. */ -static void zcrypt_cex4_remove(struct ap_device *ap_dev) +static void zcrypt_cex4_card_remove(struct ap_device *ap_dev) { - struct zcrypt_device *zdev = ap_dev->private; + struct zcrypt_card *zc = to_ap_card(&ap_dev->device)->private; - if (zdev) { - zcrypt_device_unregister(zdev); + if (zc) + zcrypt_card_unregister(zc); +} + +static struct ap_driver zcrypt_cex4_card_driver = { + .probe = zcrypt_cex4_card_probe, + .remove = zcrypt_cex4_card_remove, + .ids = zcrypt_cex4_card_ids, +}; + +/** + * Probe function for CEX4 queue device. It always accepts the AP device + * since the bus_match already checked the hardware type. + * @ap_dev: pointer to the AP device. + */ +static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev) +{ + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq; + int rc; + + if (ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL)) { + zq = zcrypt_queue_alloc(CEX4A_MAX_MESSAGE_SIZE); + if (!zq) + return -ENOMEM; + zq->ops = zcrypt_msgtype(MSGTYPE50_NAME, + MSGTYPE50_VARIANT_DEFAULT); + } else if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) { + zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE); + if (!zq) + return -ENOMEM; + zq->ops = zcrypt_msgtype(MSGTYPE06_NAME, + MSGTYPE06_VARIANT_DEFAULT); + } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) { + zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE); + if (!zq) + return -ENOMEM; + zq->ops = zcrypt_msgtype(MSGTYPE06_NAME, + MSGTYPE06_VARIANT_EP11); + } else { + return -ENODEV; } + zq->queue = aq; + zq->online = 1; + atomic_set(&zq->load, 0); + ap_queue_init_reply(aq, &zq->reply); + aq->request_timeout = CEX4_CLEANUP_TIME, + aq->private = zq; + rc = zcrypt_queue_register(zq); + if (rc) { + aq->private = NULL; + zcrypt_queue_free(zq); + } + + return rc; } +/** + * This is called to remove the CEX4 queue driver information + * if an AP queue device is removed. + */ +static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev) +{ + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq = aq->private; + + ap_queue_remove(aq); + if (zq) + zcrypt_queue_unregister(zq); +} + +static struct ap_driver zcrypt_cex4_queue_driver = { + .probe = zcrypt_cex4_queue_probe, + .remove = zcrypt_cex4_queue_remove, + .suspend = ap_queue_suspend, + .resume = ap_queue_resume, + .ids = zcrypt_cex4_queue_ids, +}; + int __init zcrypt_cex4_init(void) { - return ap_driver_register(&zcrypt_cex4_driver, THIS_MODULE, "cex4"); + int rc; + + rc = ap_driver_register(&zcrypt_cex4_card_driver, + THIS_MODULE, "cex4card"); + if (rc) + return rc; + + rc = ap_driver_register(&zcrypt_cex4_queue_driver, + THIS_MODULE, "cex4queue"); + if (rc) + ap_driver_unregister(&zcrypt_cex4_card_driver); + + return rc; } void __exit zcrypt_cex4_exit(void) { - ap_driver_unregister(&zcrypt_cex4_driver); + ap_driver_unregister(&zcrypt_cex4_queue_driver); + ap_driver_unregister(&zcrypt_cex4_card_driver); } module_init(zcrypt_cex4_init); diff --git a/drivers/s390/crypto/zcrypt_error.h b/drivers/s390/crypto/zcrypt_error.h index de1b6c1d172c..09247331e9fb 100644 --- a/drivers/s390/crypto/zcrypt_error.h +++ b/drivers/s390/crypto/zcrypt_error.h @@ -87,7 +87,7 @@ struct error_hdr { #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ -static inline int convert_error(struct zcrypt_device *zdev, +static inline int convert_error(struct zcrypt_queue *zq, struct ap_message *reply) { struct error_hdr *ehdr = reply->message; @@ -110,11 +110,13 @@ static inline int convert_error(struct zcrypt_device *zdev, * and then repeat the request. */ atomic_set(&zcrypt_rescan_req, 1); - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online, + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%drc%d", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), zq->online, ehdr->reply_code); return -EAGAIN; case REP82_ERROR_TRANSPORT_FAIL: @@ -122,19 +124,23 @@ static inline int convert_error(struct zcrypt_device *zdev, // REP88_ERROR_MODULE_FAILURE // '10' CEX2A /* If a card fails disable it and repeat the request. */ atomic_set(&zcrypt_rescan_req, 1); - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online, + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%drc%d", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), zq->online, ehdr->reply_code); return -EAGAIN; default: - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online, + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%drc%d", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), zq->online, ehdr->reply_code); return -EAGAIN; /* repeat the request on a different device. */ } diff --git a/drivers/s390/crypto/zcrypt_msgtype50.c b/drivers/s390/crypto/zcrypt_msgtype50.c index fb97479af3f8..a9873b436115 100644 --- a/drivers/s390/crypto/zcrypt_msgtype50.c +++ b/drivers/s390/crypto/zcrypt_msgtype50.c @@ -53,9 +53,6 @@ MODULE_DESCRIPTION("Cryptographic Accelerator (message type 50), " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); -static void zcrypt_cex2a_receive(struct ap_device *, struct ap_message *, - struct ap_message *); - /** * The type 50 message family is associated with a CEX2A card. * @@ -208,13 +205,13 @@ unsigned int get_rsa_crt_fc(struct ica_rsa_modexpo_crt *crt, int *fcode) /** * Convert a ICAMEX message to a type50 MEX message. * - * @zdev: crypto device pointer - * @zreq: crypto request pointer + * @zq: crypto queue pointer + * @ap_msg: crypto request pointer * @mex: pointer to user input data * * Returns 0 on success or -EFAULT. */ -static int ICAMEX_msg_to_type50MEX_msg(struct zcrypt_device *zdev, +static int ICAMEX_msg_to_type50MEX_msg(struct zcrypt_queue *zq, struct ap_message *ap_msg, struct ica_rsa_modexpo *mex) { @@ -266,13 +263,13 @@ static int ICAMEX_msg_to_type50MEX_msg(struct zcrypt_device *zdev, /** * Convert a ICACRT message to a type50 CRT message. * - * @zdev: crypto device pointer - * @zreq: crypto request pointer + * @zq: crypto queue pointer + * @ap_msg: crypto request pointer * @crt: pointer to user input data * * Returns 0 on success or -EFAULT. */ -static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev, +static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_queue *zq, struct ap_message *ap_msg, struct ica_rsa_modexpo_crt *crt) { @@ -315,7 +312,7 @@ static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev, u = crb2->u + sizeof(crb2->u) - short_len; inp = crb2->message + sizeof(crb2->message) - mod_len; } else if ((mod_len <= 512) && /* up to 4096 bit key size */ - (zdev->max_mod_size == CEX3A_MAX_MOD_SIZE)) { /* >= CEX3A */ + (zq->zcard->max_mod_size == CEX3A_MAX_MOD_SIZE)) { struct type50_crb3_msg *crb3 = ap_msg->message; memset(crb3, 0, sizeof(*crb3)); ap_msg->length = sizeof(*crb3); @@ -349,14 +346,14 @@ static int ICACRT_msg_to_type50CRT_msg(struct zcrypt_device *zdev, /** * Copy results from a type 80 reply message back to user space. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @reply: reply AP message. * @data: pointer to user output data * @length: size of user output data * * Returns 0 on success or -EFAULT. */ -static int convert_type80(struct zcrypt_device *zdev, +static int convert_type80(struct zcrypt_queue *zq, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) @@ -366,16 +363,18 @@ static int convert_type80(struct zcrypt_device *zdev, if (t80h->len < sizeof(*t80h) + outputdatalength) { /* The result is too short, the CEX2A card may not do that.. */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - AP_QID_DEVICE(zdev->ap_dev->qid), - zdev->online, t80h->code); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%drc%d", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online, t80h->code); return -EAGAIN; /* repeat the request on a different device. */ } - if (zdev->user_space_type == ZCRYPT_CEX2A) + if (zq->zcard->user_space_type == ZCRYPT_CEX2A) BUG_ON(t80h->len > CEX2A_MAX_RESPONSE_SIZE); else BUG_ON(t80h->len > CEX3A_MAX_RESPONSE_SIZE); @@ -385,7 +384,7 @@ static int convert_type80(struct zcrypt_device *zdev, return 0; } -static int convert_response(struct zcrypt_device *zdev, +static int convert_response(struct zcrypt_queue *zq, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) @@ -394,16 +393,19 @@ static int convert_response(struct zcrypt_device *zdev, switch (((unsigned char *) reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: - return convert_error(zdev, reply); + return convert_error(zq, reply); case TYPE80_RSP_CODE: - return convert_type80(zdev, reply, + return convert_type80(zq, reply, outputdata, outputdatalength); default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%dfail", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); return -EAGAIN; /* repeat the request on a different device. */ } } @@ -412,11 +414,11 @@ static int convert_response(struct zcrypt_device *zdev, * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". * It is called from tasklet context. - * @ap_dev: pointer to the AP device + * @aq: pointer to the AP device * @msg: pointer to the AP message * @reply: pointer to the AP reply message */ -static void zcrypt_cex2a_receive(struct ap_device *ap_dev, +static void zcrypt_cex2a_receive(struct ap_queue *aq, struct ap_message *msg, struct ap_message *reply) { @@ -432,7 +434,7 @@ static void zcrypt_cex2a_receive(struct ap_device *ap_dev, goto out; /* ap_msg->rc indicates the error */ t80h = reply->message; if (t80h->type == TYPE80_RSP_CODE) { - if (ap_dev->device_type == AP_DEVICE_TYPE_CEX2A) + if (aq->ap_dev.device_type == AP_DEVICE_TYPE_CEX2A) length = min_t(int, CEX2A_MAX_RESPONSE_SIZE, t80h->len); else @@ -450,11 +452,11 @@ static atomic_t zcrypt_step = ATOMIC_INIT(0); /** * The request distributor calls this function if it picked the CEX2A * device to handle a modexpo request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * CEX2A device to the request distributor * @mex: pointer to the modexpo request buffer */ -static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev, +static long zcrypt_cex2a_modexpo(struct zcrypt_queue *zq, struct ica_rsa_modexpo *mex) { struct ap_message ap_msg; @@ -462,7 +464,7 @@ static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev, int rc; ap_init_message(&ap_msg); - if (zdev->user_space_type == ZCRYPT_CEX2A) + if (zq->zcard->user_space_type == ZCRYPT_CEX2A) ap_msg.message = kmalloc(MSGTYPE50_CRB2_MAX_MSG_SIZE, GFP_KERNEL); else @@ -474,20 +476,20 @@ static long zcrypt_cex2a_modexpo(struct zcrypt_device *zdev, ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &work; - rc = ICAMEX_msg_to_type50MEX_msg(zdev, &ap_msg, mex); + rc = ICAMEX_msg_to_type50MEX_msg(zq, &ap_msg, mex); if (rc) goto out_free; init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); + ap_queue_message(zq->queue, &ap_msg); rc = wait_for_completion_interruptible(&work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) - rc = convert_response(zdev, &ap_msg, mex->outputdata, + rc = convert_response(zq, &ap_msg, mex->outputdata, mex->outputdatalength); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); + ap_cancel_message(zq->queue, &ap_msg); out_free: kfree(ap_msg.message); return rc; @@ -496,11 +498,11 @@ out_free: /** * The request distributor calls this function if it picked the CEX2A * device to handle a modexpo_crt request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * CEX2A device to the request distributor * @crt: pointer to the modexpoc_crt request buffer */ -static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev, +static long zcrypt_cex2a_modexpo_crt(struct zcrypt_queue *zq, struct ica_rsa_modexpo_crt *crt) { struct ap_message ap_msg; @@ -508,7 +510,7 @@ static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev, int rc; ap_init_message(&ap_msg); - if (zdev->user_space_type == ZCRYPT_CEX2A) + if (zq->zcard->user_space_type == ZCRYPT_CEX2A) ap_msg.message = kmalloc(MSGTYPE50_CRB2_MAX_MSG_SIZE, GFP_KERNEL); else @@ -520,20 +522,20 @@ static long zcrypt_cex2a_modexpo_crt(struct zcrypt_device *zdev, ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &work; - rc = ICACRT_msg_to_type50CRT_msg(zdev, &ap_msg, crt); + rc = ICACRT_msg_to_type50CRT_msg(zq, &ap_msg, crt); if (rc) goto out_free; init_completion(&work); - ap_queue_message(zdev->ap_dev, &ap_msg); + ap_queue_message(zq->queue, &ap_msg); rc = wait_for_completion_interruptible(&work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) - rc = convert_response(zdev, &ap_msg, crt->outputdata, + rc = convert_response(zq, &ap_msg, crt->outputdata, crt->outputdatalength); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); + ap_cancel_message(zq->queue, &ap_msg); out_free: kfree(ap_msg.message); return rc; diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index 957a88d5768b..c6cfb9acec19 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -60,9 +60,6 @@ MODULE_DESCRIPTION("Cryptographic Coprocessor (message type 6), " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); -static void zcrypt_msgtype6_receive(struct ap_device *, struct ap_message *, - struct ap_message *); - /** * CPRB * Note that all shorts, ints and longs are little-endian. @@ -258,13 +255,13 @@ int speed_idx_ep11(int req_type) /** * Convert a ICAMEX message to a type6 MEX message. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @ap_msg: pointer to AP message * @mex: pointer to user input data * * Returns 0 on success or -EFAULT. */ -static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, +static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_queue *zq, struct ap_message *ap_msg, struct ica_rsa_modexpo *mex) { @@ -279,11 +276,6 @@ static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, .ulen = 10, .only_rule = {'M', 'R', 'P', ' ', ' ', ' ', ' ', ' '} }; - static struct function_and_rules_block static_pke_fnr_MCL2 = { - .function_code = {'P', 'K'}, - .ulen = 10, - .only_rule = {'Z', 'E', 'R', 'O', '-', 'P', 'A', 'D'} - }; struct { struct type6_hdr hdr; struct CPRBX cprbx; @@ -310,11 +302,10 @@ static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); msg->cprbx = static_cprbx; - msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); + msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid); msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; - msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? - static_pke_fnr_MCL2 : static_pke_fnr; + msg->fr = static_pke_fnr; msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); @@ -325,13 +316,13 @@ static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, /** * Convert a ICACRT message to a type6 CRT message. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @ap_msg: pointer to AP message * @crt: pointer to user input data * * Returns 0 on success or -EFAULT. */ -static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, +static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_queue *zq, struct ap_message *ap_msg, struct ica_rsa_modexpo_crt *crt) { @@ -347,11 +338,6 @@ static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, .only_rule = {'Z', 'E', 'R', 'O', '-', 'P', 'A', 'D'} }; - static struct function_and_rules_block static_pkd_fnr_MCL2 = { - .function_code = {'P', 'D'}, - .ulen = 10, - .only_rule = {'P', 'K', 'C', 'S', '-', '1', '.', '2'} - }; struct { struct type6_hdr hdr; struct CPRBX cprbx; @@ -378,12 +364,11 @@ static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); msg->cprbx = static_cprbx; - msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); + msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid); msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = size - sizeof(msg->hdr) - sizeof(msg->cprbx); - msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? - static_pkd_fnr_MCL2 : static_pkd_fnr; + msg->fr = static_pkd_fnr; ap_msg->length = size; return 0; @@ -392,7 +377,7 @@ static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, /** * Convert a XCRB message to a type6 CPRB message. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @ap_msg: pointer to AP message * @xcRB: pointer to user input data * @@ -405,7 +390,8 @@ struct type86_fmt2_msg { static int XCRB_msg_to_type6CPRB_msgX(struct ap_message *ap_msg, struct ica_xcRB *xcRB, - unsigned int *fcode) + unsigned int *fcode, + unsigned short **dom) { static struct type6_hdr static_type6_hdrX = { .type = 0x06, @@ -486,6 +472,7 @@ static int XCRB_msg_to_type6CPRB_msgX(struct ap_message *ap_msg, sizeof(msg->hdr.function_code)); *fcode = (msg->hdr.function_code[0] << 8) | msg->hdr.function_code[1]; + *dom = (unsigned short *)&msg->cprbx.domain; if (memcmp(function_code, "US", 2) == 0) ap_msg->special = 1; @@ -497,6 +484,7 @@ static int XCRB_msg_to_type6CPRB_msgX(struct ap_message *ap_msg, copy_from_user(req_data, xcRB->request_data_address, xcRB->request_data_length)) return -EFAULT; + return 0; } @@ -504,6 +492,7 @@ static int xcrb_msg_to_type6_ep11cprb_msgx(struct ap_message *ap_msg, struct ep11_urb *xcRB, unsigned int *fcode) { + unsigned int lfmt; static struct type6_hdr static_type6_ep11_hdr = { .type = 0x06, .rqid = {0x00, 0x01}, @@ -556,14 +545,30 @@ static int xcrb_msg_to_type6_ep11cprb_msgx(struct ap_message *ap_msg, return -EFAULT; } - *fcode = speed_idx_ep11(payload_hdr->func_val & 0xFFFF); + if ((msg->pld_lenfmt & 0x80) == 0x80) { /*ext.len.fmt 2 or 3*/ + switch (msg->pld_lenfmt & 0x03) { + case 1: + lfmt = 2; + break; + case 2: + lfmt = 3; + break; + default: + return -EINVAL; + } + } else { + lfmt = 1; /* length format #1 */ + } + payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt); + *fcode = payload_hdr->func_val & 0xFFFF; + return 0; } /** * Copy results from a type 86 ICA reply message back to user space. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @reply: reply AP message. * @data: pointer to user output data * @length: size of user output data @@ -585,7 +590,7 @@ struct type86_ep11_reply { struct ep11_cprb cprbx; } __packed; -static int convert_type86_ica(struct zcrypt_device *zdev, +static int convert_type86_ica(struct zcrypt_queue *zq, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) @@ -640,18 +645,22 @@ static int convert_type86_ica(struct zcrypt_device *zdev, if (service_rc == 8 && service_rs == 770) return -EINVAL; if (service_rc == 8 && service_rs == 783) { - zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; + zq->zcard->min_mod_size = + PCIXCC_MIN_MOD_SIZE_OLD; return -EAGAIN; } if (service_rc == 12 && service_rs == 769) return -EINVAL; if (service_rc == 8 && service_rs == 72) return -EINVAL; - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online, + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%drc%d", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online, msg->hdr.reply_code); return -EAGAIN; /* repeat the request on a different device. */ } @@ -688,13 +697,13 @@ static int convert_type86_ica(struct zcrypt_device *zdev, /** * Copy results from a type 86 XCRB reply message back to user space. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @reply: reply AP message. * @xcRB: pointer to XCRB * * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. */ -static int convert_type86_xcrb(struct zcrypt_device *zdev, +static int convert_type86_xcrb(struct zcrypt_queue *zq, struct ap_message *reply, struct ica_xcRB *xcRB) { @@ -719,13 +728,13 @@ static int convert_type86_xcrb(struct zcrypt_device *zdev, /** * Copy results from a type 86 EP11 XCRB reply message back to user space. * - * @zdev: crypto device pointer + * @zq: crypto device pointer * @reply: reply AP message. * @xcRB: pointer to EP11 user request block * * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. */ -static int convert_type86_ep11_xcrb(struct zcrypt_device *zdev, +static int convert_type86_ep11_xcrb(struct zcrypt_queue *zq, struct ap_message *reply, struct ep11_urb *xcRB) { @@ -743,7 +752,7 @@ static int convert_type86_ep11_xcrb(struct zcrypt_device *zdev, return 0; } -static int convert_type86_rng(struct zcrypt_device *zdev, +static int convert_type86_rng(struct zcrypt_queue *zq, struct ap_message *reply, char *buffer) { @@ -760,7 +769,7 @@ static int convert_type86_rng(struct zcrypt_device *zdev, return msg->fmt2.count2; } -static int convert_response_ica(struct zcrypt_device *zdev, +static int convert_response_ica(struct zcrypt_queue *zq, struct ap_message *reply, char __user *outputdata, unsigned int outputdatalength) @@ -771,35 +780,38 @@ static int convert_response_ica(struct zcrypt_device *zdev, switch (((unsigned char *) reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: - return convert_error(zdev, reply); + return convert_error(zq, reply); case TYPE86_RSP_CODE: if (msg->cprbx.ccp_rtcode && (msg->cprbx.ccp_rscode == 0x14f) && (outputdatalength > 256)) { - if (zdev->max_exp_bit_length <= 17) { - zdev->max_exp_bit_length = 17; + if (zq->zcard->max_exp_bit_length <= 17) { + zq->zcard->max_exp_bit_length = 17; return -EAGAIN; } else return -EINVAL; } if (msg->hdr.reply_code) - return convert_error(zdev, reply); + return convert_error(zq, reply); if (msg->cprbx.cprb_ver_id == 0x02) - return convert_type86_ica(zdev, reply, + return convert_type86_ica(zq, reply, outputdata, outputdatalength); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%dfail", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); return -EAGAIN; /* repeat the request on a different device. */ } } -static int convert_response_xcrb(struct zcrypt_device *zdev, +static int convert_response_xcrb(struct zcrypt_queue *zq, struct ap_message *reply, struct ica_xcRB *xcRB) { @@ -810,28 +822,31 @@ static int convert_response_xcrb(struct zcrypt_device *zdev, case TYPE82_RSP_CODE: case TYPE88_RSP_CODE: xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ - return convert_error(zdev, reply); + return convert_error(zq, reply); case TYPE86_RSP_CODE: if (msg->hdr.reply_code) { memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); - return convert_error(zdev, reply); + return convert_error(zq, reply); } if (msg->cprbx.cprb_ver_id == 0x02) - return convert_type86_xcrb(zdev, reply, xcRB); + return convert_type86_xcrb(zq, reply, xcRB); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%dfail", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); return -EAGAIN; /* repeat the request on a different device. */ } } -static int convert_response_ep11_xcrb(struct zcrypt_device *zdev, +static int convert_response_ep11_xcrb(struct zcrypt_queue *zq, struct ap_message *reply, struct ep11_urb *xcRB) { struct type86_ep11_reply *msg = reply->message; @@ -840,24 +855,27 @@ static int convert_response_ep11_xcrb(struct zcrypt_device *zdev, switch (((unsigned char *)reply->message)[1]) { case TYPE82_RSP_CODE: case TYPE87_RSP_CODE: - return convert_error(zdev, reply); + return convert_error(zq, reply); case TYPE86_RSP_CODE: if (msg->hdr.reply_code) - return convert_error(zdev, reply); + return convert_error(zq, reply); if (msg->cprbx.cprb_ver_id == 0x04) - return convert_type86_ep11_xcrb(zdev, reply, xcRB); + return convert_type86_ep11_xcrb(zq, reply, xcRB); /* Fall through, no break, incorrect cprb version is an unknown resp.*/ default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%dfail", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); return -EAGAIN; /* repeat the request on a different device. */ } } -static int convert_response_rng(struct zcrypt_device *zdev, +static int convert_response_rng(struct zcrypt_queue *zq, struct ap_message *reply, char *data) { @@ -871,15 +889,18 @@ static int convert_response_rng(struct zcrypt_device *zdev, if (msg->hdr.reply_code) return -EINVAL; if (msg->cprbx.cprb_ver_id == 0x02) - return convert_type86_rng(zdev, reply, data); + return convert_type86_rng(zq, reply, data); /* Fall through, no break, incorrect cprb version is an unknown * response */ default: /* Unknown response type, this should NEVER EVER happen */ - zdev->online = 0; - pr_err("Cryptographic device %x failed and was set offline\n", - AP_QID_DEVICE(zdev->ap_dev->qid)); - ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail", - AP_QID_DEVICE(zdev->ap_dev->qid), zdev->online); + zq->online = 0; + pr_err("Cryptographic device %02x.%04x failed and was set offline\n", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid)); + ZCRYPT_DBF_DEV(DBF_ERR, zq, "dev%02x%04xo%dfail", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); return -EAGAIN; /* repeat the request on a different device. */ } } @@ -888,11 +909,11 @@ static int convert_response_rng(struct zcrypt_device *zdev, * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". * It is called from tasklet context. - * @ap_dev: pointer to the AP device + * @aq: pointer to the AP queue * @msg: pointer to the AP message * @reply: pointer to the AP reply message */ -static void zcrypt_msgtype6_receive(struct ap_device *ap_dev, +static void zcrypt_msgtype6_receive(struct ap_queue *aq, struct ap_message *msg, struct ap_message *reply) { @@ -937,11 +958,11 @@ out: * This function is called from the AP bus code after a crypto request * "msg" has finished with the reply message "reply". * It is called from tasklet context. - * @ap_dev: pointer to the AP device + * @aq: pointer to the AP queue * @msg: pointer to the AP message * @reply: pointer to the AP reply message */ -static void zcrypt_msgtype6_receive_ep11(struct ap_device *ap_dev, +static void zcrypt_msgtype6_receive_ep11(struct ap_queue *aq, struct ap_message *msg, struct ap_message *reply) { @@ -981,11 +1002,11 @@ static atomic_t zcrypt_step = ATOMIC_INIT(0); /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a modexpo request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * PCIXCC/CEX2C device to the request distributor * @mex: pointer to the modexpo request buffer */ -static long zcrypt_msgtype6_modexpo(struct zcrypt_device *zdev, +static long zcrypt_msgtype6_modexpo(struct zcrypt_queue *zq, struct ica_rsa_modexpo *mex) { struct ap_message ap_msg; @@ -1002,21 +1023,21 @@ static long zcrypt_msgtype6_modexpo(struct zcrypt_device *zdev, ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; - rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); + rc = ICAMEX_msg_to_type6MEX_msgX(zq, &ap_msg, mex); if (rc) goto out_free; init_completion(&resp_type.work); - ap_queue_message(zdev->ap_dev, &ap_msg); + ap_queue_message(zq->queue, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) - rc = convert_response_ica(zdev, &ap_msg, + rc = convert_response_ica(zq, &ap_msg, mex->outputdata, mex->outputdatalength); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); + ap_cancel_message(zq->queue, &ap_msg); out_free: free_page((unsigned long) ap_msg.message); return rc; @@ -1025,11 +1046,11 @@ out_free: /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a modexpo_crt request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * PCIXCC/CEX2C device to the request distributor * @crt: pointer to the modexpoc_crt request buffer */ -static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_device *zdev, +static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_queue *zq, struct ica_rsa_modexpo_crt *crt) { struct ap_message ap_msg; @@ -1046,21 +1067,22 @@ static long zcrypt_msgtype6_modexpo_crt(struct zcrypt_device *zdev, ap_msg.psmid = (((unsigned long long) current->pid) << 32) + atomic_inc_return(&zcrypt_step); ap_msg.private = &resp_type; - rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); + rc = ICACRT_msg_to_type6CRT_msgX(zq, &ap_msg, crt); if (rc) goto out_free; init_completion(&resp_type.work); - ap_queue_message(zdev->ap_dev, &ap_msg); + ap_queue_message(zq->queue, &ap_msg); rc = wait_for_completion_interruptible(&resp_type.work); if (rc == 0) { rc = ap_msg.rc; if (rc == 0) - rc = convert_response_ica(zdev, &ap_msg, + rc = convert_response_ica(zq, &ap_msg, crt->outputdata, crt->outputdatalength); - } else + } else { /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, &ap_msg); + ap_cancel_message(zq->queue, &ap_msg); + } out_free: free_page((unsigned long) ap_msg.message); return rc; @@ -1068,7 +1090,7 @@ out_free: unsigned int get_cprb_fc(struct ica_xcRB *xcRB, struct ap_message *ap_msg, - int *func_code) + unsigned int *func_code, unsigned short **dom) { struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_XCRB, @@ -1088,7 +1110,7 @@ unsigned int get_cprb_fc(struct ica_xcRB *xcRB, return -ENOMEM; } memcpy(ap_msg->private, &resp_type, sizeof(resp_type)); - rc = XCRB_msg_to_type6CPRB_msgX(ap_msg, xcRB, func_code); + rc = XCRB_msg_to_type6CPRB_msgX(ap_msg, xcRB, func_code, dom); if (rc) { kzfree(ap_msg->message); kzfree(ap_msg->private); @@ -1099,11 +1121,11 @@ unsigned int get_cprb_fc(struct ica_xcRB *xcRB, /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to handle a send_cprb request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * PCIXCC/CEX2C device to the request distributor * @xcRB: pointer to the send_cprb request buffer */ -static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev, +static long zcrypt_msgtype6_send_cprb(struct zcrypt_queue *zq, struct ica_xcRB *xcRB, struct ap_message *ap_msg) { @@ -1111,15 +1133,15 @@ static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev, struct response_type *rtype = (struct response_type *)(ap_msg->private); init_completion(&rtype->work); - ap_queue_message(zdev->ap_dev, ap_msg); + ap_queue_message(zq->queue, ap_msg); rc = wait_for_completion_interruptible(&rtype->work); if (rc == 0) { rc = ap_msg->rc; if (rc == 0) - rc = convert_response_xcrb(zdev, ap_msg, xcRB); + rc = convert_response_xcrb(zq, ap_msg, xcRB); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, ap_msg); + ap_cancel_message(zq->queue, ap_msg); kzfree(ap_msg->message); kzfree(ap_msg->private); @@ -1128,7 +1150,7 @@ static long zcrypt_msgtype6_send_cprb(struct zcrypt_device *zdev, unsigned int get_ep11cprb_fc(struct ep11_urb *xcrb, struct ap_message *ap_msg, - int *func_code) + unsigned int *func_code) { struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_EP11, @@ -1159,11 +1181,11 @@ unsigned int get_ep11cprb_fc(struct ep11_urb *xcrb, /** * The request distributor calls this function if it picked the CEX4P * device to handle a send_ep11_cprb request. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * CEX4P device to the request distributor * @xcRB: pointer to the ep11 user request block */ -static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_device *zdev, +static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_queue *zq, struct ep11_urb *xcrb, struct ap_message *ap_msg) { @@ -1196,7 +1218,7 @@ static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_device *zdev, */ if (!((msg->cprbx.flags & 0x80) == 0x80)) { msg->cprbx.target_id = (unsigned int) - AP_QID_QUEUE(zdev->ap_dev->qid); + AP_QID_QUEUE(zq->queue->qid); if ((msg->pld_lenfmt & 0x80) == 0x80) { /*ext.len.fmt 2 or 3*/ switch (msg->pld_lenfmt & 0x03) { @@ -1214,26 +1236,27 @@ static long zcrypt_msgtype6_send_ep11_cprb(struct zcrypt_device *zdev, } payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt); payload_hdr->dom_val = (unsigned int) - AP_QID_QUEUE(zdev->ap_dev->qid); + AP_QID_QUEUE(zq->queue->qid); } init_completion(&rtype->work); - ap_queue_message(zdev->ap_dev, ap_msg); + ap_queue_message(zq->queue, ap_msg); rc = wait_for_completion_interruptible(&rtype->work); if (rc == 0) { rc = ap_msg->rc; if (rc == 0) - rc = convert_response_ep11_xcrb(zdev, ap_msg, xcrb); + rc = convert_response_ep11_xcrb(zq, ap_msg, xcrb); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, ap_msg); + ap_cancel_message(zq->queue, ap_msg); kzfree(ap_msg->message); kzfree(ap_msg->private); return rc; } -unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code) +unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code, + unsigned int *domain) { struct response_type resp_type = { .type = PCIXCC_RESPONSE_TYPE_XCRB, @@ -1253,7 +1276,7 @@ unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code) } memcpy(ap_msg->private, &resp_type, sizeof(resp_type)); - rng_type6CPRB_msgX(ap_msg, ZCRYPT_RNG_BUFFER_SIZE); + rng_type6CPRB_msgX(ap_msg, ZCRYPT_RNG_BUFFER_SIZE, domain); *func_code = HWRNG; return 0; @@ -1262,11 +1285,11 @@ unsigned int get_rng_fc(struct ap_message *ap_msg, int *func_code) /** * The request distributor calls this function if it picked the PCIXCC/CEX2C * device to generate random data. - * @zdev: pointer to zcrypt_device structure that identifies the + * @zq: pointer to zcrypt_queue structure that identifies the * PCIXCC/CEX2C device to the request distributor * @buffer: pointer to a memory page to return random data */ -static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev, +static long zcrypt_msgtype6_rng(struct zcrypt_queue *zq, char *buffer, struct ap_message *ap_msg) { struct { @@ -1281,18 +1304,18 @@ static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev, struct response_type *rtype = (struct response_type *)(ap_msg->private); int rc; - msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); + msg->cprbx.domain = AP_QID_QUEUE(zq->queue->qid); init_completion(&rtype->work); - ap_queue_message(zdev->ap_dev, ap_msg); + ap_queue_message(zq->queue, ap_msg); rc = wait_for_completion_interruptible(&rtype->work); if (rc == 0) { rc = ap_msg->rc; if (rc == 0) - rc = convert_response_rng(zdev, ap_msg, buffer); + rc = convert_response_rng(zq, ap_msg, buffer); } else /* Signal pending. */ - ap_cancel_message(zdev->ap_dev, ap_msg); + ap_cancel_message(zq->queue, ap_msg); kzfree(ap_msg->message); kzfree(ap_msg->private); diff --git a/drivers/s390/crypto/zcrypt_msgtype6.h b/drivers/s390/crypto/zcrypt_msgtype6.h index a360dbe3c7d2..7a0d5b57821f 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.h +++ b/drivers/s390/crypto/zcrypt_msgtype6.h @@ -116,9 +116,11 @@ struct type86_fmt2_ext { unsigned int offset4; /* 0x00000000 */ } __packed; -unsigned int get_cprb_fc(struct ica_xcRB *, struct ap_message *, int *); -unsigned int get_ep11cprb_fc(struct ep11_urb *, struct ap_message *, int *); -unsigned int get_rng_fc(struct ap_message *, int *); +unsigned int get_cprb_fc(struct ica_xcRB *, struct ap_message *, + unsigned int *, unsigned short **); +unsigned int get_ep11cprb_fc(struct ep11_urb *, struct ap_message *, + unsigned int *); +unsigned int get_rng_fc(struct ap_message *, int *, unsigned int *); #define LOW 10 #define MEDIUM 100 @@ -134,7 +136,8 @@ int speed_idx_ep11(int); * @ap_msg: pointer to AP message */ static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg, - unsigned int random_number_length) + unsigned int random_number_length, + unsigned int *domain) { struct { struct type6_hdr hdr; @@ -172,6 +175,7 @@ static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg, msg->verb_length = 0x02; msg->key_length = 0x02; ap_msg->length = sizeof(*msg); + *domain = (unsigned short)msg->cprbx.domain; } void zcrypt_msgtype6_init(void); diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c index 43de39c74944..26ceaa696765 100644 --- a/drivers/s390/crypto/zcrypt_pcixcc.c +++ b/drivers/s390/crypto/zcrypt_pcixcc.c @@ -32,6 +32,7 @@ #include <linux/slab.h> #include <linux/atomic.h> #include <asm/uaccess.h> +#include <linux/mod_devicetable.h> #include "ap_bus.h" #include "zcrypt_api.h" @@ -62,142 +63,34 @@ struct response_type { #define PCIXCC_RESPONSE_TYPE_ICA 0 #define PCIXCC_RESPONSE_TYPE_XCRB 1 -static struct ap_device_id zcrypt_pcixcc_ids[] = { - { AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) }, - { AP_DEVICE(AP_DEVICE_TYPE_CEX2C) }, - { AP_DEVICE(AP_DEVICE_TYPE_CEX3C) }, - { /* end of list */ }, -}; - -MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); MODULE_AUTHOR("IBM Corporation"); MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " \ "Copyright IBM Corp. 2001, 2012"); MODULE_LICENSE("GPL"); -static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); -static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); - -static struct ap_driver zcrypt_pcixcc_driver = { - .probe = zcrypt_pcixcc_probe, - .remove = zcrypt_pcixcc_remove, - .ids = zcrypt_pcixcc_ids, - .request_timeout = PCIXCC_CLEANUP_TIME, +static struct ap_device_id zcrypt_pcixcc_card_ids[] = { + { .dev_type = AP_DEVICE_TYPE_PCIXCC, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX2C, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX3C, + .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE }, + { /* end of list */ }, }; -/** - * Micro-code detection function. Its sends a message to a pcixcc card - * to find out the microcode level. - * @ap_dev: pointer to the AP device. - */ -static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev) -{ - static unsigned char msg[] = { - 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00, - 0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8, - 0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, - 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A, - 0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20, - 0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05, - 0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D, - 0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55, - 0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD, - 0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA, - 0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22, - 0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB, - 0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54, - 0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00, - 0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00, - 0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40, - 0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C, - 0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF, - 0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9, - 0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63, - 0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5, - 0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A, - 0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01, - 0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28, - 0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91, - 0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5, - 0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C, - 0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98, - 0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96, - 0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19, - 0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47, - 0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36, - 0xF1,0x3D,0x93,0x53 - }; - unsigned long long psmid; - struct CPRBX *cprbx; - char *reply; - int rc, i; - - reply = (void *) get_zeroed_page(GFP_KERNEL); - if (!reply) - return -ENOMEM; +MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_card_ids); - rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg)); - if (rc) - goto out_free; - - /* Wait for the test message to complete. */ - for (i = 0; i < 6; i++) { - msleep(300); - rc = ap_recv(ap_dev->qid, &psmid, reply, 4096); - if (rc == 0 && psmid == 0x0102030405060708ULL) - break; - } - - if (i >= 6) { - /* Got no answer. */ - rc = -ENODEV; - goto out_free; - } +static struct ap_device_id zcrypt_pcixcc_queue_ids[] = { + { .dev_type = AP_DEVICE_TYPE_PCIXCC, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX2C, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { .dev_type = AP_DEVICE_TYPE_CEX3C, + .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE }, + { /* end of list */ }, +}; - cprbx = (struct CPRBX *) (reply + 48); - if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33) - rc = ZCRYPT_PCIXCC_MCL2; - else - rc = ZCRYPT_PCIXCC_MCL3; -out_free: - free_page((unsigned long) reply); - return rc; -} +MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_queue_ids); /** * Large random number detection function. Its sends a message to a pcixcc @@ -206,10 +99,11 @@ out_free: * * Returns 1 if large random numbers are supported, 0 if not and < 0 on error. */ -static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev) +static int zcrypt_pcixcc_rng_supported(struct ap_queue *aq) { struct ap_message ap_msg; unsigned long long psmid; + unsigned int domain; struct { struct type86_hdr hdr; struct type86_fmt2_ext fmt2; @@ -231,12 +125,12 @@ static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev) if (!ap_msg.message) return -ENOMEM; - rng_type6CPRB_msgX(&ap_msg, 4); + rng_type6CPRB_msgX(&ap_msg, 4, &domain); msg = ap_msg.message; - msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); + msg->cprbx.domain = AP_QID_QUEUE(aq->qid); - rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, ap_msg.message, + rc = ap_send(aq->qid, 0x0102030405060708ULL, ap_msg.message, ap_msg.length); if (rc) goto out_free; @@ -244,7 +138,7 @@ static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev) /* Wait for the test message to complete. */ for (i = 0; i < 2 * HZ; i++) { msleep(1000 / HZ); - rc = ap_recv(ap_dev->qid, &psmid, ap_msg.message, 4096); + rc = ap_recv(aq->qid, &psmid, ap_msg.message, 4096); if (rc == 0 && psmid == 0x0102030405060708ULL) break; } @@ -266,120 +160,168 @@ out_free: } /** - * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device - * since the bus_match already checked the hardware type. The PCIXCC - * cards come in two flavours: micro code level 2 and micro code level 3. - * This is checked by sending a test message to the device. - * @ap_dev: pointer to the AP device. + * Probe function for PCIXCC/CEX2C card devices. It always accepts the + * AP device since the bus_match already checked the hardware type. The + * PCIXCC cards come in two flavours: micro code level 2 and micro code + * level 3. This is checked by sending a test message to the device. + * @ap_dev: pointer to the AP card device. */ -static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) +static int zcrypt_pcixcc_card_probe(struct ap_device *ap_dev) { - struct zcrypt_device *zdev; /* * Normalized speed ratings per crypto adapter * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY */ - int PCIXCC_MCL2_SPEED_IDX[] = {10, 10, 10, 10, 10, 10, 10, 10}; - int PCIXCC_MCL3_SPEED_IDX[] = { 8, 8, 8, 8, 8, 8, 8, 8}; - int CEX2C_SPEED_IDX[] = {1000, 1400, 2400, 1100, 1500, 2600, 100, 12}; - int CEX3C_SPEED_IDX[] = { 500, 700, 1400, 550, 800, 1500, 80, 10}; + static const int CEX2C_SPEED_IDX[] = { + 1000, 1400, 2400, 1100, 1500, 2600, 100, 12}; + static const int CEX3C_SPEED_IDX[] = { + 500, 700, 1400, 550, 800, 1500, 80, 10}; + + struct ap_card *ac = to_ap_card(&ap_dev->device); + struct zcrypt_card *zc; int rc = 0; - zdev = zcrypt_device_alloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE); - if (!zdev) + zc = zcrypt_card_alloc(); + if (!zc) return -ENOMEM; - zdev->ap_dev = ap_dev; - zdev->online = 1; - switch (ap_dev->device_type) { - case AP_DEVICE_TYPE_PCIXCC: - rc = zcrypt_pcixcc_mcl(ap_dev); - if (rc < 0) { - zcrypt_device_free(zdev); - return rc; - } - zdev->user_space_type = rc; - if (rc == ZCRYPT_PCIXCC_MCL2) { - zdev->type_string = "PCIXCC_MCL2"; - memcpy(zdev->speed_rating, PCIXCC_MCL2_SPEED_IDX, - sizeof(PCIXCC_MCL2_SPEED_IDX)); - zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; - zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; - zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; - } else { - zdev->type_string = "PCIXCC_MCL3"; - memcpy(zdev->speed_rating, PCIXCC_MCL3_SPEED_IDX, - sizeof(PCIXCC_MCL3_SPEED_IDX)); - zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; - zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; - zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; - } - break; + zc->card = ac; + ac->private = zc; + switch (ac->ap_dev.device_type) { case AP_DEVICE_TYPE_CEX2C: - zdev->user_space_type = ZCRYPT_CEX2C; - zdev->type_string = "CEX2C"; - memcpy(zdev->speed_rating, CEX2C_SPEED_IDX, + zc->user_space_type = ZCRYPT_CEX2C; + zc->type_string = "CEX2C"; + memcpy(zc->speed_rating, CEX2C_SPEED_IDX, sizeof(CEX2C_SPEED_IDX)); - zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; - zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; - zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; + zc->min_mod_size = PCIXCC_MIN_MOD_SIZE; + zc->max_mod_size = PCIXCC_MAX_MOD_SIZE; + zc->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; break; case AP_DEVICE_TYPE_CEX3C: - zdev->user_space_type = ZCRYPT_CEX3C; - zdev->type_string = "CEX3C"; - memcpy(zdev->speed_rating, CEX3C_SPEED_IDX, + zc->user_space_type = ZCRYPT_CEX3C; + zc->type_string = "CEX3C"; + memcpy(zc->speed_rating, CEX3C_SPEED_IDX, sizeof(CEX3C_SPEED_IDX)); - zdev->min_mod_size = CEX3C_MIN_MOD_SIZE; - zdev->max_mod_size = CEX3C_MAX_MOD_SIZE; - zdev->max_exp_bit_length = CEX3C_MAX_MOD_SIZE; + zc->min_mod_size = CEX3C_MIN_MOD_SIZE; + zc->max_mod_size = CEX3C_MAX_MOD_SIZE; + zc->max_exp_bit_length = CEX3C_MAX_MOD_SIZE; break; default: - goto out_free; + zcrypt_card_free(zc); + return -ENODEV; } - zdev->load = zdev->speed_rating[0]; + zc->online = 1; - rc = zcrypt_pcixcc_rng_supported(ap_dev); + rc = zcrypt_card_register(zc); + if (rc) { + ac->private = NULL; + zcrypt_card_free(zc); + } + + return rc; +} + +/** + * This is called to remove the PCIXCC/CEX2C card driver information + * if an AP card device is removed. + */ +static void zcrypt_pcixcc_card_remove(struct ap_device *ap_dev) +{ + struct zcrypt_card *zc = to_ap_card(&ap_dev->device)->private; + + if (zc) + zcrypt_card_unregister(zc); +} + +static struct ap_driver zcrypt_pcixcc_card_driver = { + .probe = zcrypt_pcixcc_card_probe, + .remove = zcrypt_pcixcc_card_remove, + .ids = zcrypt_pcixcc_card_ids, +}; + +/** + * Probe function for PCIXCC/CEX2C queue devices. It always accepts the + * AP device since the bus_match already checked the hardware type. The + * PCIXCC cards come in two flavours: micro code level 2 and micro code + * level 3. This is checked by sending a test message to the device. + * @ap_dev: pointer to the AP card device. + */ +static int zcrypt_pcixcc_queue_probe(struct ap_device *ap_dev) +{ + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq; + int rc; + + zq = zcrypt_queue_alloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE); + if (!zq) + return -ENOMEM; + zq->queue = aq; + zq->online = 1; + atomic_set(&zq->load, 0); + rc = zcrypt_pcixcc_rng_supported(aq); if (rc < 0) { - zcrypt_device_free(zdev); + zcrypt_queue_free(zq); return rc; } if (rc) - zdev->ops = zcrypt_msgtype(MSGTYPE06_NAME, - MSGTYPE06_VARIANT_DEFAULT); + zq->ops = zcrypt_msgtype(MSGTYPE06_NAME, + MSGTYPE06_VARIANT_DEFAULT); else - zdev->ops = zcrypt_msgtype(MSGTYPE06_NAME, - MSGTYPE06_VARIANT_NORNG); - ap_device_init_reply(ap_dev, &zdev->reply); - ap_dev->private = zdev; - rc = zcrypt_device_register(zdev); - if (rc) - goto out_free; - return 0; - - out_free: - ap_dev->private = NULL; - zcrypt_device_free(zdev); + zq->ops = zcrypt_msgtype(MSGTYPE06_NAME, + MSGTYPE06_VARIANT_NORNG); + ap_queue_init_reply(aq, &zq->reply); + aq->request_timeout = PCIXCC_CLEANUP_TIME, + aq->private = zq; + rc = zcrypt_queue_register(zq); + if (rc) { + aq->private = NULL; + zcrypt_queue_free(zq); + } return rc; } /** - * This is called to remove the extended PCIXCC/CEX2C driver information - * if an AP device is removed. + * This is called to remove the PCIXCC/CEX2C queue driver information + * if an AP queue device is removed. */ -static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) +static void zcrypt_pcixcc_queue_remove(struct ap_device *ap_dev) { - struct zcrypt_device *zdev = ap_dev->private; + struct ap_queue *aq = to_ap_queue(&ap_dev->device); + struct zcrypt_queue *zq = aq->private; - zcrypt_device_unregister(zdev); + ap_queue_remove(aq); + if (zq) + zcrypt_queue_unregister(zq); } +static struct ap_driver zcrypt_pcixcc_queue_driver = { + .probe = zcrypt_pcixcc_queue_probe, + .remove = zcrypt_pcixcc_queue_remove, + .suspend = ap_queue_suspend, + .resume = ap_queue_resume, + .ids = zcrypt_pcixcc_queue_ids, +}; + int __init zcrypt_pcixcc_init(void) { - return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc"); + int rc; + + rc = ap_driver_register(&zcrypt_pcixcc_card_driver, + THIS_MODULE, "pcixcccard"); + if (rc) + return rc; + + rc = ap_driver_register(&zcrypt_pcixcc_queue_driver, + THIS_MODULE, "pcixccqueue"); + if (rc) + ap_driver_unregister(&zcrypt_pcixcc_card_driver); + + return rc; } void zcrypt_pcixcc_exit(void) { - ap_driver_unregister(&zcrypt_pcixcc_driver); + ap_driver_unregister(&zcrypt_pcixcc_queue_driver); + ap_driver_unregister(&zcrypt_pcixcc_card_driver); } module_init(zcrypt_pcixcc_init); diff --git a/drivers/s390/crypto/zcrypt_queue.c b/drivers/s390/crypto/zcrypt_queue.c new file mode 100644 index 000000000000..c70b2528d9a3 --- /dev/null +++ b/drivers/s390/crypto/zcrypt_queue.c @@ -0,0 +1,221 @@ +/* + * zcrypt 2.1.0 + * + * Copyright IBM Corp. 2001, 2012 + * Author(s): Robert Burroughs + * Eric Rossman (edrossma@us.ibm.com) + * Cornelia Huck <cornelia.huck@de.ibm.com> + * + * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) + * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> + * Ralph Wuerthner <rwuerthn@de.ibm.com> + * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/compat.h> +#include <linux/slab.h> +#include <linux/atomic.h> +#include <linux/uaccess.h> +#include <linux/hw_random.h> +#include <linux/debugfs.h> +#include <asm/debug.h> + +#include "zcrypt_debug.h" +#include "zcrypt_api.h" + +#include "zcrypt_msgtype6.h" +#include "zcrypt_msgtype50.h" + +/* + * Device attributes common for all crypto queue devices. + */ + +static ssize_t zcrypt_queue_online_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct zcrypt_queue *zq = to_ap_queue(dev)->private; + + return snprintf(buf, PAGE_SIZE, "%d\n", zq->online); +} + +static ssize_t zcrypt_queue_online_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct zcrypt_queue *zq = to_ap_queue(dev)->private; + struct zcrypt_card *zc = zq->zcard; + int online; + + if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) + return -EINVAL; + + if (online && !zc->online) + return -EINVAL; + zq->online = online; + ZCRYPT_DBF_DEV(DBF_INFO, zq, "dev%02x%04xo%dman", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), online); + if (!online) + ap_flush_queue(zq->queue); + return count; +} + +static DEVICE_ATTR(online, 0644, zcrypt_queue_online_show, + zcrypt_queue_online_store); + +static struct attribute *zcrypt_queue_attrs[] = { + &dev_attr_online.attr, + NULL, +}; + +static struct attribute_group zcrypt_queue_attr_group = { + .attrs = zcrypt_queue_attrs, +}; + +void zcrypt_queue_force_online(struct zcrypt_queue *zq, int online) +{ + zq->online = online; + if (!online) + ap_flush_queue(zq->queue); +} + +struct zcrypt_queue *zcrypt_queue_alloc(size_t max_response_size) +{ + struct zcrypt_queue *zq; + + zq = kzalloc(sizeof(struct zcrypt_queue), GFP_KERNEL); + if (!zq) + return NULL; + zq->reply.message = kmalloc(max_response_size, GFP_KERNEL); + if (!zq->reply.message) + goto out_free; + zq->reply.length = max_response_size; + INIT_LIST_HEAD(&zq->list); + zq->dbf_area = zcrypt_dbf_devices; + kref_init(&zq->refcount); + return zq; + +out_free: + kfree(zq); + return NULL; +} +EXPORT_SYMBOL(zcrypt_queue_alloc); + +void zcrypt_queue_free(struct zcrypt_queue *zq) +{ + kfree(zq->reply.message); + kfree(zq); +} +EXPORT_SYMBOL(zcrypt_queue_free); + +static void zcrypt_queue_release(struct kref *kref) +{ + struct zcrypt_queue *zq = + container_of(kref, struct zcrypt_queue, refcount); + zcrypt_queue_free(zq); +} + +void zcrypt_queue_get(struct zcrypt_queue *zq) +{ + kref_get(&zq->refcount); +} +EXPORT_SYMBOL(zcrypt_queue_get); + +int zcrypt_queue_put(struct zcrypt_queue *zq) +{ + return kref_put(&zq->refcount, zcrypt_queue_release); +} +EXPORT_SYMBOL(zcrypt_queue_put); + +/** + * zcrypt_queue_register() - Register a crypto queue device. + * @zq: Pointer to a crypto queue device + * + * Register a crypto queue device. Returns 0 if successful. + */ +int zcrypt_queue_register(struct zcrypt_queue *zq) +{ + struct zcrypt_card *zc; + int rc; + + spin_lock(&zcrypt_list_lock); + zc = zq->queue->card->private; + zcrypt_card_get(zc); + zq->zcard = zc; + zq->online = 1; /* New devices are online by default. */ + ZCRYPT_DBF_DEV(DBF_INFO, zq, "dev%02x%04xo%dreg", + AP_QID_CARD(zq->queue->qid), + AP_QID_QUEUE(zq->queue->qid), + zq->online); + list_add_tail(&zq->list, &zc->zqueues); + zcrypt_device_count++; + spin_unlock(&zcrypt_list_lock); + + rc = sysfs_create_group(&zq->queue->ap_dev.device.kobj, + &zcrypt_queue_attr_group); + if (rc) + goto out; + get_device(&zq->queue->ap_dev.device); + + if (zq->ops->rng) { + rc = zcrypt_rng_device_add(); + if (rc) + goto out_unregister; + } + return 0; + +out_unregister: + sysfs_remove_group(&zq->queue->ap_dev.device.kobj, + &zcrypt_queue_attr_group); + put_device(&zq->queue->ap_dev.device); +out: + spin_lock(&zcrypt_list_lock); + list_del_init(&zq->list); + spin_unlock(&zcrypt_list_lock); + zcrypt_card_put(zc); + return rc; +} +EXPORT_SYMBOL(zcrypt_queue_register); + +/** + * zcrypt_queue_unregister(): Unregister a crypto queue device. + * @zq: Pointer to crypto queue device + * + * Unregister a crypto queue device. + */ +void zcrypt_queue_unregister(struct zcrypt_queue *zq) +{ + struct zcrypt_card *zc; + + zc = zq->zcard; + spin_lock(&zcrypt_list_lock); + list_del_init(&zq->list); + zcrypt_device_count--; + spin_unlock(&zcrypt_list_lock); + zcrypt_card_put(zc); + if (zq->ops->rng) + zcrypt_rng_device_remove(); + sysfs_remove_group(&zq->queue->ap_dev.device.kobj, + &zcrypt_queue_attr_group); + put_device(&zq->queue->ap_dev.device); + zcrypt_queue_put(zq); +} +EXPORT_SYMBOL(zcrypt_queue_unregister); diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index ed84c07f6a51..8a57f0b1242d 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -175,7 +175,8 @@ struct ap_device_id { kernel_ulong_t driver_info; }; -#define AP_DEVICE_ID_MATCH_DEVICE_TYPE 0x01 +#define AP_DEVICE_ID_MATCH_CARD_TYPE 0x01 +#define AP_DEVICE_ID_MATCH_QUEUE_TYPE 0x02 /* s390 css bus devices (subchannels) */ struct css_device_id { |