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hc
2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b 
 kernel/include/linux/irq.h
....@@ -27,6 +27,7 @@
2727 struct seq_file;
2828 struct module;
2929 struct msi_msg;
30
+struct irq_affinity_desc;
3031 enum irqchip_irq_state;
3132 
3233 /*
....@@ -69,8 +70,9 @@
6970  * IRQ_IS_POLLED		- Always polled by another interrupt. Exclude
7071  *				  it from the spurious interrupt detection
7172  *				  mechanism and from core side polling.
72
- * IRQ_NO_SOFTIRQ_CALL		- No softirq processing in the irq thread context (RT)
7373  * IRQ_DISABLE_UNLAZY		- Disable lazy irq disable
74
+ * IRQ_HIDDEN			- Don't show up in /proc/interrupts
75
+ * IRQ_RAW			- Skip tick management and irqtime accounting
7476  */
7577 enum {
7678 	IRQ_TYPE_NONE		= 0x00000000,
....@@ -97,14 +99,15 @@
9799 	IRQ_PER_CPU_DEVID	= (1 << 17),
98100 	IRQ_IS_POLLED		= (1 << 18),
99101 	IRQ_DISABLE_UNLAZY	= (1 << 19),
100
-	IRQ_NO_SOFTIRQ_CALL	= (1 << 20),
102
+	IRQ_HIDDEN		= (1 << 20),
103
+	IRQ_RAW			= (1 << 21),
101104 };
102105 
103106 #define IRQF_MODIFY_MASK	\
104107 	(IRQ_TYPE_SENSE_MASK | IRQ_NOPROBE | IRQ_NOREQUEST | \
105108 	 IRQ_NOAUTOEN | IRQ_MOVE_PCNTXT | IRQ_LEVEL | IRQ_NO_BALANCING | \
106109 	 IRQ_PER_CPU | IRQ_NESTED_THREAD | IRQ_NOTHREAD | IRQ_PER_CPU_DEVID | \
107
-	 IRQ_IS_POLLED | IRQ_DISABLE_UNLAZY | IRQ_NO_SOFTIRQ_CALL)
110
+	 IRQ_IS_POLLED | IRQ_DISABLE_UNLAZY | IRQ_HIDDEN)
108111 
109112 #define IRQ_NO_BALANCING_MASK	(IRQ_PER_CPU | IRQ_NO_BALANCING)
110113 
....@@ -115,7 +118,7 @@
115118  * IRQ_SET_MASK_NOCPY	- OK, chip did update irq_common_data.affinity
116119  * IRQ_SET_MASK_OK_DONE	- Same as IRQ_SET_MASK_OK for core. Special code to
117120  *			  support stacked irqchips, which indicates skipping
118
- *			  all descendent irqchips.
121
+ *			  all descendant irqchips.
119122  */
120123 enum {
121124 	IRQ_SET_MASK_OK = 0,
....@@ -196,7 +199,7 @@
196199  * IRQD_LEVEL			- Interrupt is level triggered
197200  * IRQD_WAKEUP_STATE		- Interrupt is configured for wakeup
198201  *				  from suspend
199
- * IRDQ_MOVE_PCNTXT		- Interrupt can be moved in process
202
+ * IRQD_MOVE_PCNTXT		- Interrupt can be moved in process
200203  *				  context
201204  * IRQD_IRQ_DISABLED		- Disabled state of the interrupt
202205  * IRQD_IRQ_MASKED		- Masked state of the interrupt
....@@ -212,8 +215,12 @@
212215  * IRQD_CAN_RESERVE		- Can use reservation mode
213216  * IRQD_MSI_NOMASK_QUIRK	- Non-maskable MSI quirk for affinity change
214217  *				  required
218
+ * IRQD_HANDLE_ENFORCE_IRQCTX	- Enforce that handle_irq_*() is only invoked
219
+ *				  from actual interrupt context.
215220  * IRQD_AFFINITY_ON_ACTIVATE	- Affinity is set on activation. Don't call
216221  *				  irq_chip::irq_set_affinity() when deactivated.
222
+ * IRQD_IRQ_ENABLED_ON_SUSPEND	- Interrupt is enabled on suspend by irq pm if
223
+ *				  irqchip have flag IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND set.
217224  */
218225 enum {
219226 	IRQD_TRIGGER_MASK		= 0xf,
....@@ -237,7 +244,9 @@
237244 	IRQD_DEFAULT_TRIGGER_SET	= (1 << 25),
238245 	IRQD_CAN_RESERVE		= (1 << 26),
239246 	IRQD_MSI_NOMASK_QUIRK		= (1 << 27),
247
+	IRQD_HANDLE_ENFORCE_IRQCTX	= (1 << 28),
240248 	IRQD_AFFINITY_ON_ACTIVATE	= (1 << 29),
249
+	IRQD_IRQ_ENABLED_ON_SUSPEND	= (1 << 30),
241250 };
242251 
243252 #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors)
....@@ -295,7 +304,7 @@
295304 
296305 /*
297306  * Must only be called of irqchip.irq_set_affinity() or low level
298
- * hieararchy domain allocation functions.
307
+ * hierarchy domain allocation functions.
299308  */
300309 static inline void irqd_set_single_target(struct irq_data *d)
301310 {
....@@ -305,6 +314,21 @@
305314 static inline bool irqd_is_single_target(struct irq_data *d)
306315 {
307316 	return __irqd_to_state(d) & IRQD_SINGLE_TARGET;
317
+}
318
+
319
+static inline void irqd_set_handle_enforce_irqctx(struct irq_data *d)
320
+{
321
+	__irqd_to_state(d) |= IRQD_HANDLE_ENFORCE_IRQCTX;
322
+}
323
+
324
+static inline bool irqd_is_handle_enforce_irqctx(struct irq_data *d)
325
+{
326
+	return __irqd_to_state(d) & IRQD_HANDLE_ENFORCE_IRQCTX;
327
+}
328
+
329
+static inline bool irqd_is_enabled_on_suspend(struct irq_data *d)
330
+{
331
+	return __irqd_to_state(d) & IRQD_IRQ_ENABLED_ON_SUSPEND;
308332 }
309333 
310334 static inline bool irqd_is_wakeup_set(struct irq_data *d)
....@@ -474,6 +498,8 @@
474498  * @irq_set_vcpu_affinity:	optional to target a vCPU in a virtual machine
475499  * @ipi_send_single:	send a single IPI to destination cpus
476500  * @ipi_send_mask:	send an IPI to destination cpus in cpumask
501
+ * @irq_nmi_setup:	function called from core code before enabling an NMI
502
+ * @irq_nmi_teardown:	function called from core code after disabling an NMI
477503  * @flags:		chip specific flags
478504  */
479505 struct irq_chip {
....@@ -522,33 +548,41 @@
522548 	void		(*ipi_send_single)(struct irq_data *data, unsigned int cpu);
523549 	void		(*ipi_send_mask)(struct irq_data *data, const struct cpumask *dest);
524550 
551
+	int		(*irq_nmi_setup)(struct irq_data *data);
552
+	void		(*irq_nmi_teardown)(struct irq_data *data);
553
+
525554 	unsigned long	flags;
526555 };
527556 
528557 /*
529558  * irq_chip specific flags
530559  *
531
- * IRQCHIP_SET_TYPE_MASKED:	Mask before calling chip.irq_set_type()
532
- * IRQCHIP_EOI_IF_HANDLED:	Only issue irq_eoi() when irq was handled
533
- * IRQCHIP_MASK_ON_SUSPEND:	Mask non wake irqs in the suspend path
534
- * IRQCHIP_ONOFFLINE_ENABLED:	Only call irq_on/off_line callbacks
535
- *				when irq enabled
536
- * IRQCHIP_SKIP_SET_WAKE:	Skip chip.irq_set_wake(), for this irq chip
537
- * IRQCHIP_ONESHOT_SAFE:	One shot does not require mask/unmask
538
- * IRQCHIP_EOI_THREADED:	Chip requires eoi() on unmask in threaded mode
539
- * IRQCHIP_SUPPORTS_LEVEL_MSI	Chip can provide two doorbells for Level MSIs
560
+ * IRQCHIP_SET_TYPE_MASKED:           Mask before calling chip.irq_set_type()
561
+ * IRQCHIP_EOI_IF_HANDLED:            Only issue irq_eoi() when irq was handled
562
+ * IRQCHIP_MASK_ON_SUSPEND:           Mask non wake irqs in the suspend path
563
+ * IRQCHIP_ONOFFLINE_ENABLED:         Only call irq_on/off_line callbacks
564
+ *                                    when irq enabled
565
+ * IRQCHIP_SKIP_SET_WAKE:             Skip chip.irq_set_wake(), for this irq chip
566
+ * IRQCHIP_ONESHOT_SAFE:              One shot does not require mask/unmask
567
+ * IRQCHIP_EOI_THREADED:              Chip requires eoi() on unmask in threaded mode
568
+ * IRQCHIP_SUPPORTS_LEVEL_MSI:        Chip can provide two doorbells for Level MSIs
569
+ * IRQCHIP_SUPPORTS_NMI:              Chip can deliver NMIs, only for root irqchips
570
+ * IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND:  Invokes __enable_irq()/__disable_irq() for wake irqs
571
+ *                                    in the suspend path if they are in disabled state
540572  * IRQCHIP_AFFINITY_PRE_STARTUP:      Default affinity update before startup
541573  */
542574 enum {
543
-	IRQCHIP_SET_TYPE_MASKED		= (1 <<  0),
544
-	IRQCHIP_EOI_IF_HANDLED		= (1 <<  1),
545
-	IRQCHIP_MASK_ON_SUSPEND		= (1 <<  2),
546
-	IRQCHIP_ONOFFLINE_ENABLED	= (1 <<  3),
547
-	IRQCHIP_SKIP_SET_WAKE		= (1 <<  4),
548
-	IRQCHIP_ONESHOT_SAFE		= (1 <<  5),
549
-	IRQCHIP_EOI_THREADED		= (1 <<  6),
550
-	IRQCHIP_SUPPORTS_LEVEL_MSI	= (1 <<  7),
551
-	IRQCHIP_AFFINITY_PRE_STARTUP	= (1 << 10),
575
+	IRQCHIP_SET_TYPE_MASKED			= (1 <<  0),
576
+	IRQCHIP_EOI_IF_HANDLED			= (1 <<  1),
577
+	IRQCHIP_MASK_ON_SUSPEND			= (1 <<  2),
578
+	IRQCHIP_ONOFFLINE_ENABLED		= (1 <<  3),
579
+	IRQCHIP_SKIP_SET_WAKE			= (1 <<  4),
580
+	IRQCHIP_ONESHOT_SAFE			= (1 <<  5),
581
+	IRQCHIP_EOI_THREADED			= (1 <<  6),
582
+	IRQCHIP_SUPPORTS_LEVEL_MSI		= (1 <<  7),
583
+	IRQCHIP_SUPPORTS_NMI			= (1 <<  8),
584
+	IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND	= (1 <<  9),
585
+	IRQCHIP_AFFINITY_PRE_STARTUP		= (1 << 10),
552586 };
553587 
554588 #include <linux/irqdesc.h>
....@@ -569,8 +603,6 @@
569603 #define IRQ_DEFAULT_INIT_FLAGS	ARCH_IRQ_INIT_FLAGS
570604 
571605 struct irqaction;
572
-extern int setup_irq(unsigned int irq, struct irqaction *new);
573
-extern void remove_irq(unsigned int irq, struct irqaction *act);
574606 extern int setup_percpu_irq(unsigned int irq, struct irqaction *new);
575607 extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
576608 
....@@ -619,6 +651,7 @@
619651  */
620652 extern void handle_level_irq(struct irq_desc *desc);
621653 extern void handle_fasteoi_irq(struct irq_desc *desc);
654
+extern void handle_percpu_devid_fasteoi_ipi(struct irq_desc *desc);
622655 extern void handle_edge_irq(struct irq_desc *desc);
623656 extern void handle_edge_eoi_irq(struct irq_desc *desc);
624657 extern void handle_simple_irq(struct irq_desc *desc);
....@@ -627,6 +660,9 @@
627660 extern void handle_percpu_devid_irq(struct irq_desc *desc);
628661 extern void handle_bad_irq(struct irq_desc *desc);
629662 extern void handle_nested_irq(unsigned int irq);
663
+
664
+extern void handle_fasteoi_nmi(struct irq_desc *desc);
665
+extern void handle_percpu_devid_fasteoi_nmi(struct irq_desc *desc);
630666 
631667 extern int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg);
632668 extern int irq_chip_pm_get(struct irq_data *data);
....@@ -645,6 +681,7 @@
645681 extern void irq_chip_ack_parent(struct irq_data *data);
646682 extern int irq_chip_retrigger_hierarchy(struct irq_data *data);
647683 extern void irq_chip_mask_parent(struct irq_data *data);
684
+extern void irq_chip_mask_ack_parent(struct irq_data *data);
648685 extern void irq_chip_unmask_parent(struct irq_data *data);
649686 extern void irq_chip_eoi_parent(struct irq_data *data);
650687 extern int irq_chip_set_affinity_parent(struct irq_data *data,
....@@ -654,6 +691,8 @@
654691 extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
655692 					     void *vcpu_info);
656693 extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
694
+extern int irq_chip_request_resources_parent(struct irq_data *data);
695
+extern void irq_chip_release_resources_parent(struct irq_data *data);
657696 #endif
658697 
659698 /* Handling of unhandled and spurious interrupts: */
....@@ -715,6 +754,9 @@
715754 void
716755 irq_set_chained_handler_and_data(unsigned int irq, irq_flow_handler_t handle,
717756 				 void *data);
757
+
758
+void __irq_modify_status(unsigned int irq, unsigned long clr,
759
+			 unsigned long set, unsigned long mask);
718760 
719761 void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set);
720762 
....@@ -875,18 +917,19 @@
875917 unsigned int arch_dynirq_lower_bound(unsigned int from);
876918 
877919 int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
878
-		      struct module *owner, const struct cpumask *affinity);
920
+		      struct module *owner,
921
+		      const struct irq_affinity_desc *affinity);
879922 
880923 int __devm_irq_alloc_descs(struct device *dev, int irq, unsigned int from,
881924 			   unsigned int cnt, int node, struct module *owner,
882
-			   const struct cpumask *affinity);
925
+			   const struct irq_affinity_desc *affinity);
883926 
884927 /* use macros to avoid needing export.h for THIS_MODULE */
885928 #define irq_alloc_descs(irq, from, cnt, node)	\
886929 	__irq_alloc_descs(irq, from, cnt, node, THIS_MODULE, NULL)
887930 
888931 #define irq_alloc_desc(node)			\
889
-	irq_alloc_descs(-1, 0, 1, node)
932
+	irq_alloc_descs(-1, 1, 1, node)
890933 
891934 #define irq_alloc_desc_at(at, node)		\
892935 	irq_alloc_descs(at, at, 1, node)
....@@ -901,7 +944,7 @@
901944 	__devm_irq_alloc_descs(dev, irq, from, cnt, node, THIS_MODULE, NULL)
902945 
903946 #define devm_irq_alloc_desc(dev, node)				\
904
-	devm_irq_alloc_descs(dev, -1, 0, 1, node)
947
+	devm_irq_alloc_descs(dev, -1, 1, 1, node)
905948 
906949 #define devm_irq_alloc_desc_at(dev, at, node)			\
907950 	devm_irq_alloc_descs(dev, at, at, 1, node)
....@@ -1032,7 +1075,7 @@
10321075 	unsigned long		unused;
10331076 	struct irq_domain	*domain;
10341077 	struct list_head	list;
1035
-	struct irq_chip_type	chip_types[0];
1078
+	struct irq_chip_type	chip_types[];
10361079 };
10371080 
10381081 /**
....@@ -1068,7 +1111,7 @@
10681111 	unsigned int		irq_flags_to_clear;
10691112 	unsigned int		irq_flags_to_set;
10701113 	enum irq_gc_flags	gc_flags;
1071
-	struct irq_chip_generic	*gc[0];
1114
+	struct irq_chip_generic	*gc[];
10721115 };
10731116 
10741117 /* Generic chip callback functions */
....@@ -1230,6 +1273,12 @@
12301273  * top-level IRQ handler.
12311274  */
12321275 extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
1276
+#else
1277
+#define set_handle_irq(handle_irq)		\
1278
+	do {					\
1279
+		(void)handle_irq;		\
1280
+		WARN_ON(1);			\
1281
+	} while (0)
12331282 #endif
12341283 
12351284 #endif /* _LINUX_IRQ_H */