2 * Copyright © 2016 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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25 #ifndef __I915_GEM_H__
26 #define __I915_GEM_H__
28 #include <linux/bug.h>
29 #include <linux/interrupt.h>
31 #include <drm/drm_drv.h>
33 struct drm_i915_private;
35 #ifdef CONFIG_DRM_I915_DEBUG_GEM
37 #define GEM_SHOW_DEBUG() (drm_debug & DRM_UT_DRIVER)
39 #define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \
40 GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \
41 __func__, __LINE__, __stringify(condition)); \
45 #define GEM_WARN_ON(expr) WARN_ON(expr)
47 #define GEM_DEBUG_DECL(var) var
48 #define GEM_DEBUG_EXEC(expr) expr
49 #define GEM_DEBUG_BUG_ON(expr) GEM_BUG_ON(expr)
50 #define GEM_DEBUG_WARN_ON(expr) GEM_WARN_ON(expr)
54 #define GEM_SHOW_DEBUG() (0)
56 #define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
57 #define GEM_WARN_ON(expr) ({ unlikely(!!(expr)); })
59 #define GEM_DEBUG_DECL(var)
60 #define GEM_DEBUG_EXEC(expr) do { } while (0)
61 #define GEM_DEBUG_BUG_ON(expr)
62 #define GEM_DEBUG_WARN_ON(expr) ({ BUILD_BUG_ON_INVALID(expr); 0; })
65 #if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
66 #define GEM_TRACE(...) trace_printk(__VA_ARGS__)
67 #define GEM_TRACE_ERR(...) do { \
68 pr_err(__VA_ARGS__); \
69 trace_printk(__VA_ARGS__); \
71 #define GEM_TRACE_DUMP() ftrace_dump(DUMP_ALL)
72 #define GEM_TRACE_DUMP_ON(expr) \
73 do { if (expr) ftrace_dump(DUMP_ALL); } while (0)
75 #define GEM_TRACE(...) do { } while (0)
76 #define GEM_TRACE_ERR(...) do { } while (0)
77 #define GEM_TRACE_DUMP() do { } while (0)
78 #define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr)
81 #define I915_GEM_IDLE_TIMEOUT (HZ / 5)
83 static inline void tasklet_lock(struct tasklet_struct *t)
85 while (!tasklet_trylock(t))
89 static inline bool tasklet_is_locked(const struct tasklet_struct *t)
91 return test_bit(TASKLET_STATE_RUN, &t->state);
94 static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
96 if (!atomic_fetch_inc(&t->count))
97 tasklet_unlock_wait(t);
100 static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
102 return !atomic_read(&t->count);
105 static inline bool __tasklet_enable(struct tasklet_struct *t)
107 return atomic_dec_and_test(&t->count);
110 static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
112 return test_bit(TASKLET_STATE_SCHED, &t->state);
115 #endif /* __I915_GEM_H__ */