1 /* 2 * Copyright © 2016 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 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 13 * Software. 14 * 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, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef __I915_GEM_H__ 26 #define __I915_GEM_H__ 27 28 #include <linux/bug.h> 29 30 #include <drm/drm_drv.h> 31 32 #include "i915_utils.h" 33 34 struct drm_i915_private; 35 36 #ifdef CONFIG_DRM_I915_DEBUG_GEM 37 38 #define GEM_SHOW_DEBUG() drm_debug_enabled(DRM_UT_DRIVER) 39 40 #ifdef CONFIG_DRM_I915_DEBUG_GEM_ONCE 41 #define __GEM_BUG(cond) BUG() 42 #else 43 #define __GEM_BUG(cond) \ 44 WARN(1, "%s:%d GEM_BUG_ON(%s)\n", __func__, __LINE__, __stringify(cond)) 45 #endif 46 47 #define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \ 48 GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \ 49 __func__, __LINE__, __stringify(condition)); \ 50 GEM_TRACE_DUMP(); \ 51 __GEM_BUG(condition); \ 52 } \ 53 } while(0) 54 #define GEM_WARN_ON(expr) WARN_ON(expr) 55 56 #define GEM_DEBUG_WARN_ON(expr) GEM_WARN_ON(expr) 57 58 #else 59 60 #define GEM_SHOW_DEBUG() (0) 61 62 #define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr) 63 #define GEM_WARN_ON(expr) ({ unlikely(!!(expr)); }) 64 65 #define GEM_DEBUG_WARN_ON(expr) ({ BUILD_BUG_ON_INVALID(expr); 0; }) 66 #endif 67 68 #if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM) 69 #define GEM_TRACE(...) trace_printk(__VA_ARGS__) 70 #define GEM_TRACE_ERR(...) do { \ 71 pr_err(__VA_ARGS__); \ 72 trace_printk(__VA_ARGS__); \ 73 } while (0) 74 #define GEM_TRACE_DUMP() \ 75 do { ftrace_dump(DUMP_ALL); __add_taint_for_CI(TAINT_WARN); } while (0) 76 #define GEM_TRACE_DUMP_ON(expr) \ 77 do { if (expr) GEM_TRACE_DUMP(); } while (0) 78 #else 79 #define GEM_TRACE(...) do { } while (0) 80 #define GEM_TRACE_ERR(...) do { } while (0) 81 #define GEM_TRACE_DUMP() do { } while (0) 82 #define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr) 83 #endif 84 85 #define I915_GEM_IDLE_TIMEOUT (HZ / 5) 86 87 #endif /* __I915_GEM_H__ */ 88