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
12 * paragraph) shall be included in all copies or substantial portions of the
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 pr_err("%s:%d GEM_BUG_ON(%s)\n", \
41 __func__, __LINE__, __stringify(condition)); \
42 GEM_TRACE("%s:%d GEM_BUG_ON(%s)\n", \
43 __func__, __LINE__, __stringify(condition)); \
47 #define GEM_WARN_ON(expr) WARN_ON(expr)
49 #define GEM_DEBUG_DECL(var) var
50 #define GEM_DEBUG_EXEC(expr) expr
51 #define GEM_DEBUG_BUG_ON(expr) GEM_BUG_ON(expr)
52 #define GEM_DEBUG_WARN_ON(expr) GEM_WARN_ON(expr)
56 #define GEM_SHOW_DEBUG() (0)
58 #define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
59 #define GEM_WARN_ON(expr) ({ unlikely(!!(expr)); })
61 #define GEM_DEBUG_DECL(var)
62 #define GEM_DEBUG_EXEC(expr) do { } while (0)
63 #define GEM_DEBUG_BUG_ON(expr)
64 #define GEM_DEBUG_WARN_ON(expr) ({ BUILD_BUG_ON_INVALID(expr); 0; })
67 #if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
68 #define GEM_TRACE(...) trace_printk(__VA_ARGS__)
69 #define GEM_TRACE_DUMP() ftrace_dump(DUMP_ALL)
70 #define GEM_TRACE_DUMP_ON(expr) \
71 do { if (expr) ftrace_dump(DUMP_ALL); } while (0)
73 #define GEM_TRACE(...) do { } while (0)
74 #define GEM_TRACE_DUMP() do { } while (0)
75 #define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr)
78 #define I915_GEM_IDLE_TIMEOUT (HZ / 5)
80 static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
82 if (!atomic_fetch_inc(&t->count))
83 tasklet_unlock_wait(t);
86 static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
88 return !atomic_read(&t->count);
91 static inline bool __tasklet_enable(struct tasklet_struct *t)
93 return atomic_dec_and_test(&t->count);
96 static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
98 return test_bit(TASKLET_STATE_SCHED, &t->state);
101 #endif /* __I915_GEM_H__ */