blob: 54363527feea4dcd302f9a8a36edc12df0d196cc [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * IRQ subsystem internal functions and variables:
Thomas Gleixnerdbec07b2011-02-07 20:19:55 +01004 *
5 * Do not ever include this file from anything else than
6 * kernel/irq/. Do not even think about using any information outside
7 * of this file for your non core code.
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 */
Thomas Gleixnere1447102010-10-01 16:03:45 +02009#include <linux/irqdesc.h>
Thomas Gleixner8f945a32014-02-23 21:40:23 +000010#include <linux/kernel_stat.h>
Jon Hunterbe45beb2016-06-07 16:12:29 +010011#include <linux/pm_runtime.h>
Daniel Lezcanob2d3d612017-06-23 16:11:07 +020012#include <linux/sched/clock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013
Thomas Gleixnerc1ee6262011-02-17 17:45:15 +010014#ifdef CONFIG_SPARSE_IRQ
15# define IRQ_BITMAP_BITS (NR_IRQS + 8196)
16#else
17# define IRQ_BITMAP_BITS NR_IRQS
18#endif
19
Thomas Gleixnerdbec07b2011-02-07 20:19:55 +010020#define istate core_internal_state__do_not_mess_with_it
21
Rusty Russell2329abf2012-01-13 09:32:18 +103022extern bool noirqdebug;
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
Mika Westerberge509bd72015-10-05 13:12:15 +030024extern struct irqaction chained_action;
25
Thomas Gleixner1535dfa2011-02-07 01:55:43 +010026/*
27 * Bits used by threaded handlers:
28 * IRQTF_RUNTHREAD - signals that the interrupt handler thread should run
Thomas Gleixner1535dfa2011-02-07 01:55:43 +010029 * IRQTF_WARNED - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed
30 * IRQTF_AFFINITY - irq thread is requested to adjust affinity
Thomas Gleixner8d32a302011-02-23 23:52:23 +000031 * IRQTF_FORCED_THREAD - irq action is force threaded
Thomas Gleixner1535dfa2011-02-07 01:55:43 +010032 */
33enum {
34 IRQTF_RUNTHREAD,
Thomas Gleixner1535dfa2011-02-07 01:55:43 +010035 IRQTF_WARNED,
36 IRQTF_AFFINITY,
Thomas Gleixner8d32a302011-02-23 23:52:23 +000037 IRQTF_FORCED_THREAD,
Thomas Gleixner1535dfa2011-02-07 01:55:43 +010038};
39
Thomas Gleixnerbd062e72011-02-07 20:25:25 +010040/*
Jiang Liua2579542014-05-27 16:07:37 +080041 * Bit masks for desc->core_internal_state__do_not_mess_with_it
Thomas Gleixnerbd062e72011-02-07 20:25:25 +010042 *
43 * IRQS_AUTODETECT - autodetection in progress
Thomas Gleixner7acdd532011-02-07 20:40:54 +010044 * IRQS_SPURIOUS_DISABLED - was disabled due to spurious interrupt
45 * detection
Thomas Gleixner6954b752011-02-07 20:55:35 +010046 * IRQS_POLL_INPROGRESS - polling in progress
Thomas Gleixner3d67bae2011-02-07 21:02:10 +010047 * IRQS_ONESHOT - irq is not unmasked in primary handler
Thomas Gleixner163ef302011-02-08 11:39:15 +010048 * IRQS_REPLAY - irq is replayed
49 * IRQS_WAITING - irq is waiting
Thomas Gleixner2a0d6fb2011-02-08 12:17:57 +010050 * IRQS_PENDING - irq is pending and replayed later
Thomas Gleixnerc531e832011-02-08 12:44:58 +010051 * IRQS_SUSPENDED - irq is suspended
Julien Thierryb5259032019-01-31 14:53:58 +000052 * IRQS_NMI - irq line is used to deliver NMIs
Thomas Gleixnerbd062e72011-02-07 20:25:25 +010053 */
54enum {
55 IRQS_AUTODETECT = 0x00000001,
Thomas Gleixner7acdd532011-02-07 20:40:54 +010056 IRQS_SPURIOUS_DISABLED = 0x00000002,
Thomas Gleixner6954b752011-02-07 20:55:35 +010057 IRQS_POLL_INPROGRESS = 0x00000008,
Thomas Gleixner3d67bae2011-02-07 21:02:10 +010058 IRQS_ONESHOT = 0x00000020,
Thomas Gleixner163ef302011-02-08 11:39:15 +010059 IRQS_REPLAY = 0x00000040,
60 IRQS_WAITING = 0x00000080,
Thomas Gleixner2a0d6fb2011-02-08 12:17:57 +010061 IRQS_PENDING = 0x00000200,
Thomas Gleixnerc531e832011-02-08 12:44:58 +010062 IRQS_SUSPENDED = 0x00000800,
Daniel Lezcanob2d3d612017-06-23 16:11:07 +020063 IRQS_TIMINGS = 0x00001000,
Julien Thierryb5259032019-01-31 14:53:58 +000064 IRQS_NMI = 0x00002000,
Thomas Gleixnerbd062e72011-02-07 20:25:25 +010065};
66
Thomas Gleixner1ce60682011-02-09 20:44:21 +010067#include "debug.h"
68#include "settings.h"
69
Jiang Liua1ff5412015-06-23 19:47:29 +020070extern int __irq_set_trigger(struct irq_desc *desc, unsigned long flags);
Jiang Liu79ff1cd2015-06-23 19:52:36 +020071extern void __disable_irq(struct irq_desc *desc);
72extern void __enable_irq(struct irq_desc *desc);
David Brownell0c5d1eb2008-10-01 14:46:18 -070073
Thomas Gleixner4cde9c62017-06-20 01:37:49 +020074#define IRQ_RESEND true
75#define IRQ_NORESEND false
76
77#define IRQ_START_FORCE true
78#define IRQ_START_COND false
79
Thomas Gleixnerc942cee2017-09-13 23:29:09 +020080extern int irq_activate(struct irq_desc *desc);
Thomas Gleixner1beaeac2018-01-30 19:36:32 +010081extern int irq_activate_and_startup(struct irq_desc *desc, bool resend);
Thomas Gleixner4cde9c62017-06-20 01:37:49 +020082extern int irq_startup(struct irq_desc *desc, bool resend, bool force);
83
Thomas Gleixner46999232011-02-02 21:41:14 +000084extern void irq_shutdown(struct irq_desc *desc);
Thomas Gleixner4001d8e2019-06-28 13:11:49 +020085extern void irq_shutdown_and_deactivate(struct irq_desc *desc);
Thomas Gleixner87923472011-02-03 12:27:44 +010086extern void irq_enable(struct irq_desc *desc);
87extern void irq_disable(struct irq_desc *desc);
Marc Zyngier31d9d9b2011-09-23 17:03:06 +010088extern void irq_percpu_enable(struct irq_desc *desc, unsigned int cpu);
89extern void irq_percpu_disable(struct irq_desc *desc, unsigned int cpu);
Thomas Gleixnerd4d5e082011-02-10 13:16:14 +010090extern void mask_irq(struct irq_desc *desc);
91extern void unmask_irq(struct irq_desc *desc);
Thomas Gleixner328a4972014-03-13 19:03:51 +010092extern void unmask_threaded_irq(struct irq_desc *desc);
Thomas Gleixner46999232011-02-02 21:41:14 +000093
Thomas Gleixnerf63b6a02014-05-07 15:44:21 +000094#ifdef CONFIG_SPARSE_IRQ
95static inline void irq_mark_irq(unsigned int irq) { }
96#else
97extern void irq_mark_irq(unsigned int irq);
98#endif
99
Thomas Gleixner62e04682019-06-28 13:11:51 +0200100extern int __irq_get_irqchip_state(struct irq_data *data,
101 enum irqchip_irq_state which,
102 bool *state);
103
Yinghai Lu85ac16d2009-04-27 18:00:38 -0700104extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
Mike Travis0fa0ebb2009-01-10 22:24:06 -0800105
Keith Buschedd14cf2016-06-17 16:00:20 -0600106irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags);
Huang Shijie71f64342015-09-02 10:24:55 +0800107irqreturn_t handle_irq_event_percpu(struct irq_desc *desc);
Thomas Gleixner49126092011-02-07 01:08:49 +0100108irqreturn_t handle_irq_event(struct irq_desc *desc);
109
Thomas Gleixnere1447102010-10-01 16:03:45 +0200110/* Resending of interrupts :*/
Thomas Gleixneracd26bc2020-03-06 14:03:47 +0100111int check_irq_resend(struct irq_desc *desc, bool inject);
Thomas Gleixnerfe200ae2011-02-07 10:34:30 +0100112bool irq_wait_for_poll(struct irq_desc *desc);
Thomas Gleixnera92444c2014-02-15 00:55:19 +0000113void __irq_wake_thread(struct irq_desc *desc, struct irqaction *action);
Thomas Gleixnere1447102010-10-01 16:03:45 +0200114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#ifdef CONFIG_PROC_FS
Yinghai Lu2c6927a2008-08-19 20:50:11 -0700116extern void register_irq_proc(unsigned int irq, struct irq_desc *desc);
Thomas Gleixner13bfe992010-09-30 02:46:07 +0200117extern void unregister_irq_proc(unsigned int irq, struct irq_desc *desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118extern void register_handler_proc(unsigned int irq, struct irqaction *action);
119extern void unregister_handler_proc(unsigned int irq, struct irqaction *action);
120#else
Yinghai Lu2c6927a2008-08-19 20:50:11 -0700121static inline void register_irq_proc(unsigned int irq, struct irq_desc *desc) { }
Thomas Gleixner13bfe992010-09-30 02:46:07 +0200122static inline void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123static inline void register_handler_proc(unsigned int irq,
124 struct irqaction *action) { }
125static inline void unregister_handler_proc(unsigned int irq,
126 struct irqaction *action) { }
127#endif
128
Thomas Gleixner9c2555832016-07-04 17:39:23 +0900129extern bool irq_can_set_affinity_usr(unsigned int irq);
130
Thomas Gleixner591d2fb2009-07-21 11:09:39 +0200131extern void irq_set_thread_affinity(struct irq_desc *desc);
Yinghai Lu57b150c2009-04-27 17:59:53 -0700132
Jiang Liu818b0f32012-03-30 23:11:34 +0800133extern int irq_do_set_affinity(struct irq_data *data,
134 const struct cpumask *dest, bool force);
135
Thomas Gleixner43564bd2017-06-20 01:37:22 +0200136#ifdef CONFIG_SMP
137extern int irq_setup_affinity(struct irq_desc *desc);
138#else
139static inline int irq_setup_affinity(struct irq_desc *desc) { return 0; }
140#endif
141
Thomas Gleixner70aedd22009-08-13 12:17:48 +0200142/* Inline functions for support of irq chips on slow busses */
Thomas Gleixner3876ec92010-09-27 12:44:35 +0000143static inline void chip_bus_lock(struct irq_desc *desc)
Thomas Gleixner70aedd22009-08-13 12:17:48 +0200144{
Thomas Gleixner3876ec92010-09-27 12:44:35 +0000145 if (unlikely(desc->irq_data.chip->irq_bus_lock))
146 desc->irq_data.chip->irq_bus_lock(&desc->irq_data);
Thomas Gleixner70aedd22009-08-13 12:17:48 +0200147}
148
Thomas Gleixner3876ec92010-09-27 12:44:35 +0000149static inline void chip_bus_sync_unlock(struct irq_desc *desc)
Thomas Gleixner70aedd22009-08-13 12:17:48 +0200150{
Thomas Gleixner3876ec92010-09-27 12:44:35 +0000151 if (unlikely(desc->irq_data.chip->irq_bus_sync_unlock))
152 desc->irq_data.chip->irq_bus_sync_unlock(&desc->irq_data);
Thomas Gleixner70aedd22009-08-13 12:17:48 +0200153}
154
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100155#define _IRQ_DESC_CHECK (1 << 0)
156#define _IRQ_DESC_PERCPU (1 << 1)
157
158#define IRQ_GET_DESC_CHECK_GLOBAL (_IRQ_DESC_CHECK)
159#define IRQ_GET_DESC_CHECK_PERCPU (_IRQ_DESC_CHECK | _IRQ_DESC_PERCPU)
160
Daniel Lezcanof944b5a2016-01-14 10:54:13 +0100161#define for_each_action_of_desc(desc, act) \
Masahiro Yamada163616c2017-08-09 15:32:21 +0900162 for (act = desc->action; act; act = act->next)
Daniel Lezcanof944b5a2016-01-14 10:54:13 +0100163
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100164struct irq_desc *
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100165__irq_get_desc_lock(unsigned int irq, unsigned long *flags, bool bus,
166 unsigned int check);
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100167void __irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags, bool bus);
168
169static inline struct irq_desc *
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100170irq_get_desc_buslock(unsigned int irq, unsigned long *flags, unsigned int check)
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100171{
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100172 return __irq_get_desc_lock(irq, flags, true, check);
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100173}
174
175static inline void
176irq_put_desc_busunlock(struct irq_desc *desc, unsigned long flags)
177{
178 __irq_put_desc_unlock(desc, flags, true);
179}
180
181static inline struct irq_desc *
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100182irq_get_desc_lock(unsigned int irq, unsigned long *flags, unsigned int check)
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100183{
Marc Zyngier31d9d9b2011-09-23 17:03:06 +0100184 return __irq_get_desc_lock(irq, flags, false, check);
Thomas Gleixnerd5eb4ad22011-02-12 12:16:16 +0100185}
186
187static inline void
188irq_put_desc_unlock(struct irq_desc *desc, unsigned long flags)
189{
190 __irq_put_desc_unlock(desc, flags, false);
191}
192
Boqun Fengb3542862015-12-29 12:18:48 +0800193#define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors)
194
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200195static inline unsigned int irqd_get(struct irq_data *d)
196{
197 return __irqd_to_state(d);
198}
199
Ingo Molnar43f77752006-06-29 02:24:58 -0700200/*
Thomas Gleixnerf230b6d2011-02-05 15:20:04 +0100201 * Manipulation functions for irq_data.state
202 */
203static inline void irqd_set_move_pending(struct irq_data *d)
204{
Jiang Liu0d0b4c82015-06-01 16:05:12 +0800205 __irqd_to_state(d) |= IRQD_SETAFFINITY_PENDING;
Thomas Gleixnerf230b6d2011-02-05 15:20:04 +0100206}
207
208static inline void irqd_clr_move_pending(struct irq_data *d)
209{
Jiang Liu0d0b4c82015-06-01 16:05:12 +0800210 __irqd_to_state(d) &= ~IRQD_SETAFFINITY_PENDING;
Thomas Gleixnerf230b6d2011-02-05 15:20:04 +0100211}
Thomas Gleixnera0056772011-02-08 17:11:03 +0100212
Thomas Gleixner54fdf6a2017-06-20 01:37:47 +0200213static inline void irqd_set_managed_shutdown(struct irq_data *d)
214{
215 __irqd_to_state(d) |= IRQD_MANAGED_SHUTDOWN;
216}
217
218static inline void irqd_clr_managed_shutdown(struct irq_data *d)
219{
220 __irqd_to_state(d) &= ~IRQD_MANAGED_SHUTDOWN;
221}
222
Thomas Gleixnera0056772011-02-08 17:11:03 +0100223static inline void irqd_clear(struct irq_data *d, unsigned int mask)
224{
Jiang Liu0d0b4c82015-06-01 16:05:12 +0800225 __irqd_to_state(d) &= ~mask;
Thomas Gleixnera0056772011-02-08 17:11:03 +0100226}
227
228static inline void irqd_set(struct irq_data *d, unsigned int mask)
229{
Jiang Liu0d0b4c82015-06-01 16:05:12 +0800230 __irqd_to_state(d) |= mask;
Thomas Gleixnera0056772011-02-08 17:11:03 +0100231}
232
Thomas Gleixner2bdd1052011-02-08 17:22:00 +0100233static inline bool irqd_has_set(struct irq_data *d, unsigned int mask)
234{
Jiang Liu0d0b4c82015-06-01 16:05:12 +0800235 return __irqd_to_state(d) & mask;
Thomas Gleixner2bdd1052011-02-08 17:22:00 +0100236}
Thomas Gleixner8f945a32014-02-23 21:40:23 +0000237
Juergen Grossa6967122017-07-17 19:47:02 +0200238static inline void irq_state_set_disabled(struct irq_desc *desc)
239{
240 irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
241}
242
243static inline void irq_state_set_masked(struct irq_desc *desc)
244{
245 irqd_set(&desc->irq_data, IRQD_IRQ_MASKED);
246}
247
Boqun Fengb3542862015-12-29 12:18:48 +0800248#undef __irqd_to_state
249
Thomas Gleixner1136b072019-02-08 14:48:03 +0100250static inline void __kstat_incr_irqs_this_cpu(struct irq_desc *desc)
Thomas Gleixner8f945a32014-02-23 21:40:23 +0000251{
252 __this_cpu_inc(*desc->kstat_irqs);
253 __this_cpu_inc(kstat.irqs_sum);
254}
Thomas Gleixnercab303b2014-08-28 11:44:31 +0200255
Thomas Gleixner1136b072019-02-08 14:48:03 +0100256static inline void kstat_incr_irqs_this_cpu(struct irq_desc *desc)
257{
258 __kstat_incr_irqs_this_cpu(desc);
259 desc->tot_count++;
260}
261
Jiang Liu67830112015-06-01 16:05:13 +0800262static inline int irq_desc_get_node(struct irq_desc *desc)
263{
Jiang Liu449e9ca2015-06-01 16:05:16 +0800264 return irq_common_data_get_node(&desc->irq_common_data);
Jiang Liu67830112015-06-01 16:05:13 +0800265}
266
Grygorii Strashko4717f132015-11-10 11:58:12 +0200267static inline int irq_desc_is_chained(struct irq_desc *desc)
268{
269 return (desc->action && desc->action == &chained_action);
270}
271
Thomas Gleixnercab303b2014-08-28 11:44:31 +0200272#ifdef CONFIG_PM_SLEEP
Thomas Gleixner9ce7a252014-08-29 14:00:16 +0200273bool irq_pm_check_wakeup(struct irq_desc *desc);
Thomas Gleixnercab303b2014-08-28 11:44:31 +0200274void irq_pm_install_action(struct irq_desc *desc, struct irqaction *action);
275void irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action);
276#else
Thomas Gleixner9ce7a252014-08-29 14:00:16 +0200277static inline bool irq_pm_check_wakeup(struct irq_desc *desc) { return false; }
Thomas Gleixnercab303b2014-08-28 11:44:31 +0200278static inline void
279irq_pm_install_action(struct irq_desc *desc, struct irqaction *action) { }
280static inline void
281irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action) { }
282#endif
Bartosz Golaszewskif1602032017-05-31 18:06:58 +0200283
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200284#ifdef CONFIG_IRQ_TIMINGS
285
286#define IRQ_TIMINGS_SHIFT 5
287#define IRQ_TIMINGS_SIZE (1 << IRQ_TIMINGS_SHIFT)
288#define IRQ_TIMINGS_MASK (IRQ_TIMINGS_SIZE - 1)
289
290/**
291 * struct irq_timings - irq timings storing structure
292 * @values: a circular buffer of u64 encoded <timestamp,irq> values
293 * @count: the number of elements in the array
294 */
295struct irq_timings {
296 u64 values[IRQ_TIMINGS_SIZE];
297 int count;
298};
299
300DECLARE_PER_CPU(struct irq_timings, irq_timings);
301
Daniel Lezcanoe1c92142017-06-23 16:11:08 +0200302extern void irq_timings_free(int irq);
303extern int irq_timings_alloc(int irq);
304
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200305static inline void irq_remove_timings(struct irq_desc *desc)
306{
307 desc->istate &= ~IRQS_TIMINGS;
Daniel Lezcanoe1c92142017-06-23 16:11:08 +0200308
309 irq_timings_free(irq_desc_get_irq(desc));
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200310}
311
312static inline void irq_setup_timings(struct irq_desc *desc, struct irqaction *act)
313{
Daniel Lezcanoe1c92142017-06-23 16:11:08 +0200314 int irq = irq_desc_get_irq(desc);
315 int ret;
316
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200317 /*
318 * We don't need the measurement because the idle code already
319 * knows the next expiry event.
320 */
321 if (act->flags & __IRQF_TIMER)
322 return;
323
Daniel Lezcanoe1c92142017-06-23 16:11:08 +0200324 /*
325 * In case the timing allocation fails, we just want to warn,
326 * not fail, so letting the system boot anyway.
327 */
328 ret = irq_timings_alloc(irq);
329 if (ret) {
330 pr_warn("Failed to allocate irq timing stats for irq%d (%d)",
331 irq, ret);
332 return;
333 }
334
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200335 desc->istate |= IRQS_TIMINGS;
336}
337
338extern void irq_timings_enable(void);
339extern void irq_timings_disable(void);
340
341DECLARE_STATIC_KEY_FALSE(irq_timing_enabled);
342
343/*
344 * The interrupt number and the timestamp are encoded into a single
345 * u64 variable to optimize the size.
346 * 48 bit time stamp and 16 bit IRQ number is way sufficient.
347 * Who cares an IRQ after 78 hours of idle time?
348 */
349static inline u64 irq_timing_encode(u64 timestamp, int irq)
350{
351 return (timestamp << 16) | irq;
352}
353
354static inline int irq_timing_decode(u64 value, u64 *timestamp)
355{
356 *timestamp = value >> 16;
357 return value & U16_MAX;
358}
359
Daniel Lezcanodf025e42019-05-27 22:55:17 +0200360static __always_inline void irq_timings_push(u64 ts, int irq)
361{
362 struct irq_timings *timings = this_cpu_ptr(&irq_timings);
363
364 timings->values[timings->count & IRQ_TIMINGS_MASK] =
365 irq_timing_encode(ts, irq);
366
367 timings->count++;
368}
369
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200370/*
371 * The function record_irq_time is only called in one place in the
372 * interrupts handler. We want this function always inline so the code
373 * inside is embedded in the function and the static key branching
374 * code can act at the higher level. Without the explicit
375 * __always_inline we can end up with a function call and a small
376 * overhead in the hotpath for nothing.
377 */
378static __always_inline void record_irq_time(struct irq_desc *desc)
379{
380 if (!static_branch_likely(&irq_timing_enabled))
381 return;
382
Daniel Lezcanodf025e42019-05-27 22:55:17 +0200383 if (desc->istate & IRQS_TIMINGS)
384 irq_timings_push(local_clock(), irq_desc_get_irq(desc));
Daniel Lezcanob2d3d612017-06-23 16:11:07 +0200385}
386#else
387static inline void irq_remove_timings(struct irq_desc *desc) {}
388static inline void irq_setup_timings(struct irq_desc *desc,
389 struct irqaction *act) {};
390static inline void record_irq_time(struct irq_desc *desc) {}
391#endif /* CONFIG_IRQ_TIMINGS */
392
393
Bartosz Golaszewskif1602032017-05-31 18:06:58 +0200394#ifdef CONFIG_GENERIC_IRQ_CHIP
395void irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
396 int num_ct, unsigned int irq_base,
397 void __iomem *reg_base, irq_flow_handler_t handler);
398#else
399static inline void
400irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
401 int num_ct, unsigned int irq_base,
402 void __iomem *reg_base, irq_flow_handler_t handler) { }
403#endif /* CONFIG_GENERIC_IRQ_CHIP */
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200404
Christoph Hellwig137221d2017-06-20 01:37:24 +0200405#ifdef CONFIG_GENERIC_PENDING_IRQ
406static inline bool irq_can_move_pcntxt(struct irq_data *data)
407{
408 return irqd_can_move_in_process_context(data);
409}
410static inline bool irq_move_pending(struct irq_data *data)
411{
412 return irqd_is_setaffinity_pending(data);
413}
414static inline void
415irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
416{
417 cpumask_copy(desc->pending_mask, mask);
418}
419static inline void
420irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
421{
422 cpumask_copy(mask, desc->pending_mask);
423}
Thomas Gleixnerf0383c22017-06-20 01:37:29 +0200424static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc)
425{
426 return desc->pending_mask;
427}
Thomas Gleixnerc16816a2020-03-06 14:03:43 +0100428static inline bool handle_enforce_irqctx(struct irq_data *data)
429{
430 return irqd_is_handle_enforce_irqctx(data);
431}
Thomas Gleixner36d84fb2017-06-20 01:37:34 +0200432bool irq_fixup_move_pending(struct irq_desc *desc, bool force_clear);
Christoph Hellwig137221d2017-06-20 01:37:24 +0200433#else /* CONFIG_GENERIC_PENDING_IRQ */
434static inline bool irq_can_move_pcntxt(struct irq_data *data)
435{
436 return true;
437}
438static inline bool irq_move_pending(struct irq_data *data)
439{
440 return false;
441}
442static inline void
443irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
444{
445}
446static inline void
447irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
448{
449}
Thomas Gleixnerf0383c22017-06-20 01:37:29 +0200450static inline struct cpumask *irq_desc_get_pending_mask(struct irq_desc *desc)
451{
452 return NULL;
453}
Thomas Gleixner36d84fb2017-06-20 01:37:34 +0200454static inline bool irq_fixup_move_pending(struct irq_desc *desc, bool fclear)
455{
456 return false;
457}
Thomas Gleixnerc16816a2020-03-06 14:03:43 +0100458static inline bool handle_enforce_irqctx(struct irq_data *data)
459{
460 return false;
461}
Thomas Gleixnerf0383c22017-06-20 01:37:29 +0200462#endif /* !CONFIG_GENERIC_PENDING_IRQ */
Christoph Hellwig137221d2017-06-20 01:37:24 +0200463
Thomas Gleixner457f6d32017-09-13 23:29:07 +0200464#if !defined(CONFIG_IRQ_DOMAIN) || !defined(CONFIG_IRQ_DOMAIN_HIERARCHY)
Thomas Gleixner702cb0a2017-12-29 16:59:06 +0100465static inline int irq_domain_activate_irq(struct irq_data *data, bool reserve)
Thomas Gleixner457f6d32017-09-13 23:29:07 +0200466{
467 irqd_set_activated(data);
Thomas Gleixnerbb9b4282017-09-13 23:29:11 +0200468 return 0;
Thomas Gleixner457f6d32017-09-13 23:29:07 +0200469}
470static inline void irq_domain_deactivate_irq(struct irq_data *data)
471{
472 irqd_clr_activated(data);
473}
474#endif
475
Thomas Gleixner13b90ca2020-08-26 13:16:32 +0200476static inline struct irq_data *irqd_get_parent_data(struct irq_data *irqd)
477{
478#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
479 return irqd->parent_data;
480#else
481 return NULL;
482#endif
483}
484
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200485#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
Thomas Gleixnerc2ce34c2017-06-24 11:05:59 +0200486#include <linux/debugfs.h>
487
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200488void irq_add_debugfs_entry(unsigned int irq, struct irq_desc *desc);
Thomas Gleixnerc2ce34c2017-06-24 11:05:59 +0200489static inline void irq_remove_debugfs_entry(struct irq_desc *desc)
490{
491 debugfs_remove(desc->debugfs_file);
Thomas Gleixner07557cc2017-09-13 23:29:05 +0200492 kfree(desc->dev_name);
Thomas Gleixnerc2ce34c2017-06-24 11:05:59 +0200493}
Thomas Gleixner07557cc2017-09-13 23:29:05 +0200494void irq_debugfs_copy_devname(int irq, struct device *dev);
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200495# ifdef CONFIG_IRQ_DOMAIN
496void irq_domain_debugfs_init(struct dentry *root);
497# else
Sebastian Otte5682b42017-07-04 11:25:15 +0200498static inline void irq_domain_debugfs_init(struct dentry *root)
499{
500}
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200501# endif
502#else /* CONFIG_GENERIC_IRQ_DEBUGFS */
503static inline void irq_add_debugfs_entry(unsigned int irq, struct irq_desc *d)
504{
505}
506static inline void irq_remove_debugfs_entry(struct irq_desc *d)
507{
508}
Thomas Gleixner07557cc2017-09-13 23:29:05 +0200509static inline void irq_debugfs_copy_devname(int irq, struct device *dev)
510{
511}
Thomas Gleixner087cdfb2017-06-20 01:37:17 +0200512#endif /* CONFIG_GENERIC_IRQ_DEBUGFS */