| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Harald Freudenberger | 443 | 36.58% | 29 | 46.77% |
| Martin Schwidefsky | 412 | 34.02% | 4 | 6.45% |
| Ingo Tuchscherer | 170 | 14.04% | 8 | 12.90% |
| Holger Dengler | 61 | 5.04% | 6 | 9.68% |
| Tony Krowiak | 55 | 4.54% | 4 | 6.45% |
| Felix Beck | 38 | 3.14% | 5 | 8.06% |
| Ralph Wuerthner | 20 | 1.65% | 2 | 3.23% |
| Kees Cook | 4 | 0.33% | 1 | 1.61% |
| Linus Torvalds (pre-git) | 3 | 0.25% | 1 | 1.61% |
| Juergen Christ | 3 | 0.25% | 1 | 1.61% |
| Waiman Long | 2 | 0.17% | 1 | 1.61% |
| Total | 1211 | 62 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright IBM Corp. 2006, 2019 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> * Ralph Wuerthner <rwuerthn@de.ibm.com> * Felix Beck <felix.beck@de.ibm.com> * Holger Dengler <hd@linux.vnet.ibm.com> * * Adjunct processor bus header file. */ #ifndef _AP_BUS_H_ #define _AP_BUS_H_ #include <linux/device.h> #include <linux/types.h> #include <linux/hashtable.h> #include <asm/isc.h> #include <asm/ap.h> #define AP_DEVICES 256 /* Number of AP devices. */ #define AP_DOMAINS 256 /* Number of AP domains. */ #define AP_IOCTLS 256 /* Number of ioctls. */ #define AP_RESET_TIMEOUT (HZ*0.7) /* Time in ticks for reset timeouts. */ #define AP_CONFIG_TIME 30 /* Time in seconds between AP bus rescans. */ #define AP_POLL_TIME 1 /* Time in ticks between receive polls. */ #define AP_DEFAULT_MAX_MSG_SIZE (12 * 1024) #define AP_TAPQ_ML_FIELD_CHUNK_SIZE (4096) extern int ap_domain_index; extern atomic_t ap_max_msg_size; extern DECLARE_HASHTABLE(ap_queues, 8); extern spinlock_t ap_queues_lock; static inline int ap_test_bit(unsigned int *ptr, unsigned int nr) { return (*ptr & (0x80000000u >> nr)) != 0; } #define AP_RESPONSE_NORMAL 0x00 #define AP_RESPONSE_Q_NOT_AVAIL 0x01 #define AP_RESPONSE_RESET_IN_PROGRESS 0x02 #define AP_RESPONSE_DECONFIGURED 0x03 #define AP_RESPONSE_CHECKSTOPPED 0x04 #define AP_RESPONSE_BUSY 0x05 #define AP_RESPONSE_INVALID_ADDRESS 0x06 #define AP_RESPONSE_OTHERWISE_CHANGED 0x07 #define AP_RESPONSE_INVALID_GISA 0x08 #define AP_RESPONSE_Q_FULL 0x10 #define AP_RESPONSE_NO_PENDING_REPLY 0x10 #define AP_RESPONSE_INDEX_TOO_BIG 0x11 #define AP_RESPONSE_NO_FIRST_PART 0x13 #define AP_RESPONSE_MESSAGE_TOO_BIG 0x15 #define AP_RESPONSE_REQ_FAC_NOT_INST 0x16 #define AP_RESPONSE_INVALID_DOMAIN 0x42 /* * Known device types */ #define AP_DEVICE_TYPE_PCICC 3 #define AP_DEVICE_TYPE_PCICA 4 #define AP_DEVICE_TYPE_PCIXCC 5 #define AP_DEVICE_TYPE_CEX2A 6 #define AP_DEVICE_TYPE_CEX2C 7 #define AP_DEVICE_TYPE_CEX3A 8 #define AP_DEVICE_TYPE_CEX3C 9 #define AP_DEVICE_TYPE_CEX4 10 #define AP_DEVICE_TYPE_CEX5 11 #define AP_DEVICE_TYPE_CEX6 12 #define AP_DEVICE_TYPE_CEX7 13 #define AP_DEVICE_TYPE_CEX8 14 /* * Known function facilities */ #define AP_FUNC_MEX4K 1 #define AP_FUNC_CRT4K 2 #define AP_FUNC_COPRO 3 #define AP_FUNC_ACCEL 4 #define AP_FUNC_EP11 5 #define AP_FUNC_APXA 6 /* * AP queue state machine states */ enum ap_sm_state { AP_SM_STATE_RESET_START = 0, AP_SM_STATE_RESET_WAIT, AP_SM_STATE_SETIRQ_WAIT, AP_SM_STATE_IDLE, AP_SM_STATE_WORKING, AP_SM_STATE_QUEUE_FULL, NR_AP_SM_STATES }; /* * AP queue state machine events */ enum ap_sm_event { AP_SM_EVENT_POLL, AP_SM_EVENT_TIMEOUT, NR_AP_SM_EVENTS }; /* * AP queue state wait behaviour */ enum ap_sm_wait { AP_SM_WAIT_AGAIN = 0, /* retry immediately */ AP_SM_WAIT_TIMEOUT, /* wait for timeout */ AP_SM_WAIT_INTERRUPT, /* wait for thin interrupt (if available) */ AP_SM_WAIT_NONE, /* no wait */ NR_AP_SM_WAIT }; /* * AP queue device states */ enum ap_dev_state { AP_DEV_STATE_UNINITIATED = 0, /* fresh and virgin, not touched */ AP_DEV_STATE_OPERATING, /* queue dev is working normal */ AP_DEV_STATE_SHUTDOWN, /* remove/unbind/shutdown in progress */ AP_DEV_STATE_ERROR, /* device is in error state */ NR_AP_DEV_STATES }; struct ap_device; struct ap_message; /* * The ap driver struct includes a flags field which holds some info for * the ap bus about the driver. Currently only one flag is supported and * used: The DEFAULT flag marks an ap driver as a default driver which is * used together with the apmask and aqmask whitelisting of the ap bus. */ #define AP_DRIVER_FLAG_DEFAULT 0x0001 struct ap_driver { struct device_driver driver; struct ap_device_id *ids; unsigned int flags; int (*probe)(struct ap_device *); void (*remove)(struct ap_device *); int (*in_use)(unsigned long *apm, unsigned long *aqm); /* * Called at the start of the ap bus scan function when * the crypto config information (qci) has changed. * This callback is not invoked if there is no AP * QCI support available. */ void (*on_config_changed)(struct ap_config_info *new_config_info, struct ap_config_info *old_config_info); /* * Called at the end of the ap bus scan function when * the crypto config information (qci) has changed. * This callback is not invoked if there is no AP * QCI support available. */ void (*on_scan_complete)(struct ap_config_info *new_config_info, struct ap_config_info *old_config_info); }; #define to_ap_drv(x) container_of((x), struct ap_driver, driver) int ap_driver_register(struct ap_driver *, struct module *, char *); void ap_driver_unregister(struct ap_driver *); struct ap_device { struct device device; int device_type; /* AP device type. */ }; #define to_ap_dev(x) container_of((x), struct ap_device, device) struct ap_card { struct ap_device ap_dev; int raw_hwtype; /* AP raw hardware type. */ unsigned int functions; /* AP device function bitfield. */ int queue_depth; /* AP queue depth.*/ int id; /* AP card number. */ unsigned int maxmsgsize; /* AP msg limit for this card */ bool config; /* configured state */ bool chkstop; /* checkstop state */ atomic64_t total_request_count; /* # requests ever for this AP device.*/ }; #define to_ap_card(x) container_of((x), struct ap_card, ap_dev.device) struct ap_queue { struct ap_device ap_dev; struct hlist_node hnode; /* Node for the ap_queues hashtable */ struct ap_card *card; /* Ptr to assoc. AP card. */ spinlock_t lock; /* Per device lock. */ enum ap_dev_state dev_state; /* queue device state */ bool config; /* configured state */ bool chkstop; /* checkstop state */ ap_qid_t qid; /* AP queue id. */ bool interrupt; /* indicate if interrupts are enabled */ int queue_count; /* # messages currently on AP queue. */ int pendingq_count; /* # requests on pendingq list. */ int requestq_count; /* # requests on requestq list. */ u64 total_request_count; /* # requests ever for this AP device.*/ int request_timeout; /* Request timeout 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. */ enum ap_sm_state sm_state; /* ap queue state machine state */ int last_err_rc; /* last error state response code */ }; #define to_ap_queue(x) container_of((x), struct ap_queue, ap_dev.device) typedef enum ap_sm_wait (ap_func_t)(struct ap_queue *queue); /* failure injection cmd struct */ struct ap_fi { union { u16 cmd; /* fi flags + action */ struct { u8 flags; /* fi flags only */ u8 action; /* fi action only */ }; }; }; /* all currently known fi actions */ enum ap_fi_actions { AP_FI_ACTION_CCA_AGENT_FF = 0x01, AP_FI_ACTION_CCA_DOM_INVAL = 0x02, AP_FI_ACTION_NQAP_QID_INVAL = 0x03, }; /* all currently known fi flags */ enum ap_fi_flags { AP_FI_FLAG_NO_RETRY = 0x01, AP_FI_FLAG_TOGGLE_SPECIAL = 0x02, }; struct ap_message { struct list_head list; /* Request queueing. */ unsigned long long psmid; /* Message id. */ void *msg; /* Pointer to message buffer. */ unsigned int len; /* actual msg len in msg buffer */ unsigned int bufsize; /* allocated msg buffer size */ u16 flags; /* Flags, see AP_MSG_FLAG_xxx */ struct ap_fi fi; /* Failure Injection cmd */ int rc; /* Return code for this message */ void *private; /* ap driver private pointer. */ /* receive is called from tasklet context */ void (*receive)(struct ap_queue *, struct ap_message *, struct ap_message *); }; #define AP_MSG_FLAG_SPECIAL 0x0001 /* flag msg as 'special' with NQAP */ #define AP_MSG_FLAG_USAGE 0x0002 /* CCA, EP11: usage (no admin) msg */ #define AP_MSG_FLAG_ADMIN 0x0004 /* CCA, EP11: admin (=control) msg */ /** * ap_init_message() - Initialize ap_message. * Initialize a message before using. Otherwise this might result in * unexpected behaviour. */ static inline void ap_init_message(struct ap_message *ap_msg) { memset(ap_msg, 0, sizeof(*ap_msg)); } /** * ap_release_message() - Release ap_message. * Releases all memory used internal within the ap_message struct * Currently this is the message and private field. */ static inline void ap_release_message(struct ap_message *ap_msg) { kfree_sensitive(ap_msg->msg); kfree_sensitive(ap_msg->private); } /* * Note: don't use ap_send/ap_recv after using ap_queue_message * for the first time. Otherwise the ap message queue will get * confused. */ int ap_send(ap_qid_t, unsigned long long, void *, size_t); int ap_recv(ap_qid_t, unsigned long long *, void *, size_t); enum ap_sm_wait ap_sm_event(struct ap_queue *aq, enum ap_sm_event event); enum ap_sm_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_sm_event event); int 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_sm_wait wait); void ap_request_timeout(struct timer_list *t); void ap_bus_force_rescan(void); int ap_test_config_usage_domain(unsigned int domain); int ap_test_config_ctrl_domain(unsigned int domain); 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_prepare_remove(struct ap_queue *aq); void ap_queue_remove(struct ap_queue *aq); void ap_queue_init_state(struct ap_queue *aq); struct ap_card *ap_card_create(int id, int queue_depth, int raw_type, int comp_type, unsigned int functions, int ml); #define APMASKSIZE (BITS_TO_LONGS(AP_DEVICES) * sizeof(unsigned long)) #define AQMASKSIZE (BITS_TO_LONGS(AP_DOMAINS) * sizeof(unsigned long)) struct ap_perms { unsigned long ioctlm[BITS_TO_LONGS(AP_IOCTLS)]; unsigned long apm[BITS_TO_LONGS(AP_DEVICES)]; unsigned long aqm[BITS_TO_LONGS(AP_DOMAINS)]; unsigned long adm[BITS_TO_LONGS(AP_DOMAINS)]; }; extern struct ap_perms ap_perms; extern struct mutex ap_perms_mutex; /* * Get ap_queue device for this qid. * Returns ptr to the struct ap_queue device or NULL if there * was no ap_queue device with this qid found. When something is * found, the reference count of the embedded device is increased. * So the caller has to decrease the reference count after use * with a call to put_device(&aq->ap_dev.device). */ struct ap_queue *ap_get_qdev(ap_qid_t qid); /* * check APQN for owned/reserved by ap bus and default driver(s). * Checks if this APQN is or will be in use by the ap bus * and the default set of drivers. * If yes, returns 1, if not returns 0. On error a negative * errno value is returned. */ int ap_owned_by_def_drv(int card, int queue); /* * check 'matrix' of APQNs for owned/reserved by ap bus and * default driver(s). * Checks if there is at least one APQN in the given 'matrix' * marked as owned/reserved by the ap bus and default driver(s). * If such an APQN is found the return value is 1, otherwise * 0 is returned. On error a negative errno value is returned. * The parameter apm is a bitmask which should be declared * as DECLARE_BITMAP(apm, AP_DEVICES), the aqm parameter is * similar, should be declared as DECLARE_BITMAP(aqm, AP_DOMAINS). */ int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm, unsigned long *aqm); /* * ap_parse_mask_str() - helper function to parse a bitmap string * and clear/set the bits in the bitmap accordingly. The string may be * given as absolute value, a hex string like 0x1F2E3D4C5B6A" simple * overwriting the current content of the bitmap. Or as relative string * like "+1-16,-32,-0x40,+128" where only single bits or ranges of * bits are cleared or set. Distinction is done based on the very * first character which may be '+' or '-' for the relative string * and othewise assume to be an absolute value string. If parsing fails * a negative errno value is returned. All arguments and bitmaps are * big endian order. */ int ap_parse_mask_str(const char *str, unsigned long *bitmap, int bits, struct mutex *lock); /* * Interface to wait for the AP bus to have done one initial ap bus * scan and all detected APQNs have been bound to device drivers. * If these both conditions are not fulfilled, this function blocks * on a condition with wait_for_completion_killable_timeout(). * If these both conditions are fulfilled (before the timeout hits) * the return value is 0. If the timeout (in jiffies) hits instead * -ETIME is returned. On failures negative return values are * returned to the caller. */ int ap_wait_init_apqn_bindings_complete(unsigned long timeout); void ap_send_config_uevent(struct ap_device *ap_dev, bool cfg); void ap_send_online_uevent(struct ap_device *ap_dev, int online); #endif /* _AP_BUS_H_ */
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