forked from ~ljy/RK356X_SDK_RELEASE
blame | history | patch | commit | commitdiff
hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/s390/crypto/ap_bus.h
....@@ -1,6 +1,6 @@
11 /* SPDX-License-Identifier: GPL-2.0+ */
22 /*
3
- * Copyright IBM Corp. 2006, 2012
3
+ * Copyright IBM Corp. 2006, 2019
44  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
55  *	      Martin Schwidefsky <schwidefsky@de.ibm.com>
66  *	      Ralph Wuerthner <rwuerthn@de.ibm.com>
....@@ -15,19 +15,21 @@
1515 
1616 #include <linux/device.h>
1717 #include <linux/types.h>
18
+#include <linux/hashtable.h>
1819 #include <asm/isc.h>
1920 #include <asm/ap.h>
2021 
2122 #define AP_DEVICES 256		/* Number of AP devices. */
2223 #define AP_DOMAINS 256		/* Number of AP domains. */
24
+#define AP_IOCTLS  256		/* Number of ioctls. */
2325 #define AP_RESET_TIMEOUT (HZ*0.7)	/* Time in ticks for reset timeouts. */
2426 #define AP_CONFIG_TIME 30	/* Time in seconds between AP bus rescans. */
2527 #define AP_POLL_TIME 1		/* Time in ticks between receive polls. */
2628 
2729 extern int ap_domain_index;
2830 
29
-extern spinlock_t ap_list_lock;
30
-extern struct list_head ap_card_list;
31
+extern DECLARE_HASHTABLE(ap_queues, 8);
32
+extern spinlock_t ap_queues_lock;
3133 
3234 static inline int ap_test_bit(unsigned int *ptr, unsigned int nr)
3335 {
....@@ -48,6 +50,7 @@
4850 #define AP_RESPONSE_NO_FIRST_PART	0x13
4951 #define AP_RESPONSE_MESSAGE_TOO_BIG	0x15
5052 #define AP_RESPONSE_REQ_FAC_NOT_INST	0x16
53
+#define AP_RESPONSE_INVALID_DOMAIN	0x42
5154 
5255 /*
5356  * Known device types
....@@ -62,6 +65,7 @@
6265 #define AP_DEVICE_TYPE_CEX4	10
6366 #define AP_DEVICE_TYPE_CEX5	11
6467 #define AP_DEVICE_TYPE_CEX6	12
68
+#define AP_DEVICE_TYPE_CEX7	13
6569 
6670 /*
6771  * Known function facilities
....@@ -74,44 +78,47 @@
7478 #define AP_FUNC_APXA  6
7579 
7680 /*
77
- * AP interrupt states
81
+ * AP queue state machine states
7882  */
79
-#define AP_INTR_DISABLED	0	/* AP interrupt disabled */
80
-#define AP_INTR_ENABLED		1	/* AP interrupt enabled */
81
-
82
-/*
83
- * AP device states
84
- */
85
-enum ap_state {
86
-	AP_STATE_RESET_START,
87
-	AP_STATE_RESET_WAIT,
88
-	AP_STATE_SETIRQ_WAIT,
89
-	AP_STATE_IDLE,
90
-	AP_STATE_WORKING,
91
-	AP_STATE_QUEUE_FULL,
92
-	AP_STATE_SUSPEND_WAIT,
93
-	AP_STATE_BORKED,
94
-	NR_AP_STATES
83
+enum ap_sm_state {
84
+	AP_SM_STATE_RESET_START = 0,
85
+	AP_SM_STATE_RESET_WAIT,
86
+	AP_SM_STATE_SETIRQ_WAIT,
87
+	AP_SM_STATE_IDLE,
88
+	AP_SM_STATE_WORKING,
89
+	AP_SM_STATE_QUEUE_FULL,
90
+	NR_AP_SM_STATES
9591 };
9692 
9793 /*
98
- * AP device events
94
+ * AP queue state machine events
9995  */
100
-enum ap_event {
101
-	AP_EVENT_POLL,
102
-	AP_EVENT_TIMEOUT,
103
-	NR_AP_EVENTS
96
+enum ap_sm_event {
97
+	AP_SM_EVENT_POLL,
98
+	AP_SM_EVENT_TIMEOUT,
99
+	NR_AP_SM_EVENTS
104100 };
105101 
106102 /*
107
- * AP wait behaviour
103
+ * AP queue state wait behaviour
108104  */
109
-enum ap_wait {
110
-	AP_WAIT_AGAIN,		/* retry immediately */
111
-	AP_WAIT_TIMEOUT,	/* wait for timeout */
112
-	AP_WAIT_INTERRUPT,	/* wait for thin interrupt (if available) */
113
-	AP_WAIT_NONE,		/* no wait */
114
-	NR_AP_WAIT
105
+enum ap_sm_wait {
106
+	AP_SM_WAIT_AGAIN = 0,	/* retry immediately */
107
+	AP_SM_WAIT_TIMEOUT,	/* wait for timeout */
108
+	AP_SM_WAIT_INTERRUPT,	/* wait for thin interrupt (if available) */
109
+	AP_SM_WAIT_NONE,	/* no wait */
110
+	NR_AP_SM_WAIT
111
+};
112
+
113
+/*
114
+ * AP queue device states
115
+ */
116
+enum ap_dev_state {
117
+	AP_DEV_STATE_UNINITIATED = 0,	/* fresh and virgin, not touched */
118
+	AP_DEV_STATE_OPERATING,		/* queue dev is working normal */
119
+	AP_DEV_STATE_SHUTDOWN,		/* remove/unbind/shutdown in progress */
120
+	AP_DEV_STATE_ERROR,		/* device is in error state */
121
+	NR_AP_DEV_STATES
115122 };
116123 
117124 struct ap_device;
....@@ -132,8 +139,6 @@
132139 
133140 	int (*probe)(struct ap_device *);
134141 	void (*remove)(struct ap_device *);
135
-	void (*suspend)(struct ap_device *);
136
-	void (*resume)(struct ap_device *);
137142 };
138143 
139144 #define to_ap_drv(x) container_of((x), struct ap_driver, driver)
....@@ -151,13 +156,12 @@
151156 
152157 struct ap_card {
153158 	struct ap_device ap_dev;
154
-	struct list_head list;		/* Private list of AP cards. */
155
-	struct list_head queues;	/* List of assoc. AP queues */
156159 	void *private;			/* ap driver private pointer. */
157160 	int raw_hwtype;			/* AP raw hardware type. */
158161 	unsigned int functions;		/* AP device function bitfield. */
159162 	int queue_depth;		/* AP queue depth.*/
160163 	int id;				/* AP card number. */
164
+	bool config;			/* configured state */
161165 	atomic64_t total_request_count;	/* # requests ever for this AP device.*/
162166 };
163167 
....@@ -165,14 +169,15 @@
165169 
166170 struct ap_queue {
167171 	struct ap_device ap_dev;
168
-	struct list_head list;		/* Private list of AP queues. */
172
+	struct hlist_node hnode;	/* Node for the ap_queues hashtable */
169173 	struct ap_card *card;		/* Ptr to assoc. AP card. */
170174 	spinlock_t lock;		/* Per device lock. */
171175 	void *private;			/* ap driver private pointer. */
176
+	enum ap_dev_state dev_state;	/* queue device state */
177
+	bool config;			/* configured state */
172178 	ap_qid_t qid;			/* AP queue id. */
173
-	int interrupt;			/* indicate if interrupts are enabled */
179
+	bool interrupt;			/* indicate if interrupts are enabled */
174180 	int queue_count;		/* # messages currently on AP queue. */
175
-	enum ap_state state;		/* State of the AP device. */
176181 	int pendingq_count;		/* # requests on pendingq list. */
177182 	int requestq_count;		/* # requests on requestq list. */
178183 	u64 total_request_count;	/* # requests ever for this AP device.*/
....@@ -181,25 +186,53 @@
181186 	struct list_head pendingq;	/* List of message sent to AP queue. */
182187 	struct list_head requestq;	/* List of message yet to be sent. */
183188 	struct ap_message *reply;	/* Per device reply message. */
189
+	enum ap_sm_state sm_state;	/* ap queue state machine state */
190
+	int last_err_rc;		/* last error state response code */
184191 };
185192 
186193 #define to_ap_queue(x) container_of((x), struct ap_queue, ap_dev.device)
187194 
188
-typedef enum ap_wait (ap_func_t)(struct ap_queue *queue);
195
+typedef enum ap_sm_wait (ap_func_t)(struct ap_queue *queue);
196
+
197
+/* failure injection cmd struct */
198
+struct ap_fi {
199
+	union {
200
+		u16 cmd;		/* fi flags + action */
201
+		struct {
202
+			u8 flags;	/* fi flags only */
203
+			u8 action;	/* fi action only */
204
+		};
205
+	};
206
+};
207
+
208
+/* all currently known fi actions */
209
+enum ap_fi_actions {
210
+	AP_FI_ACTION_CCA_AGENT_FF   = 0x01,
211
+	AP_FI_ACTION_CCA_DOM_INVAL  = 0x02,
212
+	AP_FI_ACTION_NQAP_QID_INVAL = 0x03,
213
+};
214
+
215
+/* all currently known fi flags */
216
+enum ap_fi_flags {
217
+	AP_FI_FLAG_NO_RETRY	  = 0x01,
218
+	AP_FI_FLAG_TOGGLE_SPECIAL = 0x02,
219
+};
189220 
190221 struct ap_message {
191222 	struct list_head list;		/* Request queueing. */
192223 	unsigned long long psmid;	/* Message id. */
193
-	void *message;			/* Pointer to message buffer. */
194
-	size_t length;			/* Message length. */
224
+	void *msg;			/* Pointer to message buffer. */
225
+	unsigned int len;		/* Message length. */
226
+	u16 flags;			/* Flags, see AP_MSG_FLAG_xxx */
227
+	struct ap_fi fi;		/* Failure Injection cmd */
195228 	int rc;				/* Return code for this message */
196
-
197229 	void *private;			/* ap driver private pointer. */
198
-	unsigned int special:1;		/* Used for special commands. */
199230 	/* receive is called from tasklet context */
200231 	void (*receive)(struct ap_queue *, struct ap_message *,
201232 			struct ap_message *);
202233 };
234
+
235
+#define AP_MSG_FLAG_SPECIAL  1		/* flag msg as 'special' with NQAP */
203236 
204237 /**
205238  * ap_init_message() - Initialize ap_message.
....@@ -218,15 +251,9 @@
218251  */
219252 static inline void ap_release_message(struct ap_message *ap_msg)
220253 {
221
-	kzfree(ap_msg->message);
222
-	kzfree(ap_msg->private);
254
+	kfree_sensitive(ap_msg->msg);
255
+	kfree_sensitive(ap_msg->private);
223256 }
224
-
225
-#define for_each_ap_card(_ac) \
226
-	list_for_each_entry(_ac, &ap_card_list, list)
227
-
228
-#define for_each_ap_queue(_aq, _ac) \
229
-	list_for_each_entry(_aq, &(_ac)->queues, list)
230257 
231258 /*
232259  * Note: don't use ap_send/ap_recv after using ap_queue_message
....@@ -236,27 +263,47 @@
236263 int ap_send(ap_qid_t, unsigned long long, void *, size_t);
237264 int ap_recv(ap_qid_t, unsigned long long *, void *, size_t);
238265 
239
-enum ap_wait ap_sm_event(struct ap_queue *aq, enum ap_event event);
240
-enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event);
266
+enum ap_sm_wait ap_sm_event(struct ap_queue *aq, enum ap_sm_event event);
267
+enum ap_sm_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_sm_event event);
241268 
242
-void ap_queue_message(struct ap_queue *aq, struct ap_message *ap_msg);
269
+int ap_queue_message(struct ap_queue *aq, struct ap_message *ap_msg);
243270 void ap_cancel_message(struct ap_queue *aq, struct ap_message *ap_msg);
244271 void ap_flush_queue(struct ap_queue *aq);
245272 
246273 void *ap_airq_ptr(void);
247
-void ap_wait(enum ap_wait wait);
274
+void ap_wait(enum ap_sm_wait wait);
248275 void ap_request_timeout(struct timer_list *t);
249276 void ap_bus_force_rescan(void);
250277 
278
+int ap_test_config_usage_domain(unsigned int domain);
279
+int ap_test_config_ctrl_domain(unsigned int domain);
280
+
251281 void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *ap_msg);
252282 struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type);
283
+void ap_queue_prepare_remove(struct ap_queue *aq);
253284 void ap_queue_remove(struct ap_queue *aq);
254
-void ap_queue_suspend(struct ap_device *ap_dev);
255
-void ap_queue_resume(struct ap_device *ap_dev);
256
-void ap_queue_reinit_state(struct ap_queue *aq);
285
+void ap_queue_init_state(struct ap_queue *aq);
257286 
258287 struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type,
259288 			       int comp_device_type, unsigned int functions);
289
+
290
+struct ap_perms {
291
+	unsigned long ioctlm[BITS_TO_LONGS(AP_IOCTLS)];
292
+	unsigned long apm[BITS_TO_LONGS(AP_DEVICES)];
293
+	unsigned long aqm[BITS_TO_LONGS(AP_DOMAINS)];
294
+};
295
+extern struct ap_perms ap_perms;
296
+extern struct mutex ap_perms_mutex;
297
+
298
+/*
299
+ * Get ap_queue device for this qid.
300
+ * Returns ptr to the struct ap_queue device or NULL if there
301
+ * was no ap_queue device with this qid found. When something is
302
+ * found, the reference count of the embedded device is increased.
303
+ * So the caller has to decrease the reference count after use
304
+ * with a call to put_device(&aq->ap_dev.device).
305
+ */
306
+struct ap_queue *ap_get_qdev(ap_qid_t qid);
260307 
261308 /*
262309  * check APQN for owned/reserved by ap bus and default driver(s).
....@@ -281,4 +328,20 @@
281328 int ap_apqn_in_matrix_owned_by_def_drv(unsigned long *apm,
282329 				       unsigned long *aqm);
283330 
331
+/*
332
+ * ap_parse_mask_str() - helper function to parse a bitmap string
333
+ * and clear/set the bits in the bitmap accordingly. The string may be
334
+ * given as absolute value, a hex string like 0x1F2E3D4C5B6A" simple
335
+ * overwriting the current content of the bitmap. Or as relative string
336
+ * like "+1-16,-32,-0x40,+128" where only single bits or ranges of
337
+ * bits are cleared or set. Distinction is done based on the very
338
+ * first character which may be '+' or '-' for the relative string
339
+ * and othewise assume to be an absolute value string. If parsing fails
340
+ * a negative errno value is returned. All arguments and bitmaps are
341
+ * big endian order.
342
+ */
343
+int ap_parse_mask_str(const char *str,
344
+		      unsigned long *bitmap, int bits,
345
+		      struct mutex *lock);
346
+
284347 #endif /* _AP_BUS_H_ */