diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_de.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_de.h | 41 |
1 files changed, 27 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_de.h b/drivers/gpu/drm/i915/display/intel_de.h index 00da10bf35f5..9d8c177aa228 100644 --- a/drivers/gpu/drm/i915/display/intel_de.h +++ b/drivers/gpu/drm/i915/display/intel_de.h @@ -8,6 +8,7 @@ #include "i915_drv.h" #include "i915_reg.h" +#include "i915_trace.h" #include "intel_uncore.h" static inline u32 @@ -22,26 +23,12 @@ intel_de_posting_read(struct drm_i915_private *i915, i915_reg_t reg) intel_uncore_posting_read(&i915->uncore, reg); } -/* Note: read the warnings for intel_uncore_*_fw() functions! */ -static inline u32 -intel_de_read_fw(struct drm_i915_private *i915, i915_reg_t reg) -{ - return intel_uncore_read_fw(&i915->uncore, reg); -} - static inline void intel_de_write(struct drm_i915_private *i915, i915_reg_t reg, u32 val) { intel_uncore_write(&i915->uncore, reg, val); } -/* Note: read the warnings for intel_uncore_*_fw() functions! */ -static inline void -intel_de_write_fw(struct drm_i915_private *i915, i915_reg_t reg, u32 val) -{ - intel_uncore_write_fw(&i915->uncore, reg, val); -} - static inline void intel_de_rmw(struct drm_i915_private *i915, i915_reg_t reg, u32 clear, u32 set) { @@ -69,4 +56,30 @@ intel_de_wait_for_clear(struct drm_i915_private *i915, i915_reg_t reg, return intel_de_wait_for_register(i915, reg, mask, 0, timeout); } +/* + * Unlocked mmio-accessors, think carefully before using these. + * + * Certain architectures will die if the same cacheline is concurrently accessed + * by different clients (e.g. on Ivybridge). Access to registers should + * therefore generally be serialised, by either the dev_priv->uncore.lock or + * a more localised lock guarding all access to that bank of registers. + */ +static inline u32 +intel_de_read_fw(struct drm_i915_private *i915, i915_reg_t reg) +{ + u32 val; + + val = intel_uncore_read_fw(&i915->uncore, reg); + trace_i915_reg_rw(false, reg, val, sizeof(val), true); + + return val; +} + +static inline void +intel_de_write_fw(struct drm_i915_private *i915, i915_reg_t reg, u32 val) +{ + trace_i915_reg_rw(true, reg, val, sizeof(val), true); + intel_uncore_write_fw(&i915->uncore, reg, val); +} + #endif /* __INTEL_DE_H__ */ |