diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_utils.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_utils.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h index 2987219a6300..562f756da421 100644 --- a/drivers/gpu/drm/i915/i915_utils.h +++ b/drivers/gpu/drm/i915/i915_utils.h @@ -31,6 +31,8 @@ #include <linux/types.h> #include <linux/workqueue.h> +struct drm_i915_private; + #undef WARN_ON /* Many gcc seem to no see through this and fall over :( */ #if 0 @@ -49,6 +51,34 @@ #define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \ __stringify(x), (long)(x)) +void __printf(3, 4) +__i915_printk(struct drm_i915_private *dev_priv, const char *level, + const char *fmt, ...); + +#define i915_report_error(dev_priv, fmt, ...) \ + __i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__) + +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) + +int __i915_inject_load_error(struct drm_i915_private *i915, int err, + const char *func, int line); +#define i915_inject_load_error(_i915, _err) \ + __i915_inject_load_error((_i915), (_err), __func__, __LINE__) +bool i915_error_injected(void); + +#else + +#define i915_inject_load_error(_i915, _err) 0 +#define i915_error_injected() false + +#endif + +#define i915_inject_probe_failure(i915) i915_inject_load_error((i915), -ENODEV) + +#define i915_probe_error(i915, fmt, ...) \ + __i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \ + fmt, ##__VA_ARGS__) + #if defined(GCC_VERSION) && GCC_VERSION >= 70000 #define add_overflows_t(T, A, B) \ __builtin_add_overflow_p((A), (B), (T)0) @@ -131,6 +161,16 @@ __check_struct_size(size_t base, size_t arr, size_t count, size_t *size) ((typeof(ptr))((unsigned long)(ptr) | __bits)); \ }) +#define ptr_dec(ptr) ({ \ + unsigned long __v = (unsigned long)(ptr); \ + (typeof(ptr))(__v - 1); \ +}) + +#define ptr_inc(ptr) ({ \ + unsigned long __v = (unsigned long)(ptr); \ + (typeof(ptr))(__v + 1); \ +}) + #define page_mask_bits(ptr) ptr_mask_bits(ptr, PAGE_SHIFT) #define page_unmask_bits(ptr) ptr_unmask_bits(ptr, PAGE_SHIFT) #define page_pack_bits(ptr, bits) ptr_pack_bits(ptr, bits, PAGE_SHIFT) @@ -370,4 +410,15 @@ static inline const char *enableddisabled(bool v) return v ? "enabled" : "disabled"; } +static inline void add_taint_for_CI(unsigned int taint) +{ + /* + * The system is "ok", just about surviving for the user, but + * CI results are now unreliable as the HW is very suspect. + * CI checks the taint state after every test and will reboot + * the machine if the kernel is tainted. + */ + add_taint(taint, LOCKDEP_STILL_OK); +} + #endif /* !__I915_UTILS_H */ |