1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Copyright © 2019 Intel Corporation
4 */
5
6 #ifndef INTEL_GT_IRQ_H
7 #define INTEL_GT_IRQ_H
8
9 #include <linux/types.h>
10
11 #include "intel_engine_types.h"
12
13 struct intel_gt;
14
15 #define GEN8_GT_IRQS (GEN8_GT_RCS_IRQ | \
16 GEN8_GT_BCS_IRQ | \
17 GEN8_GT_VCS0_IRQ | \
18 GEN8_GT_VCS1_IRQ | \
19 GEN8_GT_VECS_IRQ | \
20 GEN8_GT_PM_IRQ | \
21 GEN8_GT_GUC_IRQ)
22
23 void gen11_gt_irq_reset(struct intel_gt *gt);
24 void gen11_gt_irq_postinstall(struct intel_gt *gt);
25 void gen11_gt_irq_handler(struct intel_gt *gt, const u32 master_ctl);
26
27 bool gen11_gt_reset_one_iir(struct intel_gt *gt,
28 const unsigned int bank,
29 const unsigned int bit);
30
31 void gen5_gt_irq_handler(struct intel_gt *gt, u32 gt_iir);
32
33 void gen5_gt_irq_postinstall(struct intel_gt *gt);
34 void gen5_gt_irq_reset(struct intel_gt *gt);
35 void gen5_gt_disable_irq(struct intel_gt *gt, u32 mask);
36 void gen5_gt_enable_irq(struct intel_gt *gt, u32 mask);
37
38 void gen6_gt_irq_handler(struct intel_gt *gt, u32 gt_iir);
39
40 void gen8_gt_irq_handler(struct intel_gt *gt, u32 master_ctl);
41 void gen8_gt_irq_reset(struct intel_gt *gt);
42 void gen8_gt_irq_postinstall(struct intel_gt *gt);
43
intel_engine_cs_irq(struct intel_engine_cs * engine,u16 iir)44 static inline void intel_engine_cs_irq(struct intel_engine_cs *engine, u16 iir)
45 {
46 if (iir)
47 engine->irq_handler(engine, iir);
48 }
49
50 static inline void
intel_engine_set_irq_handler(struct intel_engine_cs * engine,void (* fn)(struct intel_engine_cs * engine,u16 iir))51 intel_engine_set_irq_handler(struct intel_engine_cs *engine,
52 void (*fn)(struct intel_engine_cs *engine,
53 u16 iir))
54 {
55 /*
56 * As the interrupt is live as allocate and setup the engines,
57 * err on the side of caution and apply barriers to updating
58 * the irq handler callback. This assures that when we do use
59 * the engine, we will receive interrupts only to ourselves,
60 * and not lose any.
61 */
62 smp_store_mb(engine->irq_handler, fn);
63 }
64
65 #endif /* INTEL_GT_IRQ_H */
66