1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2019 Intel Corporation 4 */ 5 6 #ifndef __INTEL_DE_H__ 7 #define __INTEL_DE_H__ 8 9 #include "i915_drv.h" 10 #include "i915_reg.h" 11 #include "i915_trace.h" 12 #include "intel_uncore.h" 13 14 static inline u32 15 intel_de_read(struct drm_i915_private *i915, i915_reg_t reg) 16 { 17 return intel_uncore_read(&i915->uncore, reg); 18 } 19 20 static inline void 21 intel_de_posting_read(struct drm_i915_private *i915, i915_reg_t reg) 22 { 23 intel_uncore_posting_read(&i915->uncore, reg); 24 } 25 26 static inline void 27 intel_de_write(struct drm_i915_private *i915, i915_reg_t reg, u32 val) 28 { 29 intel_uncore_write(&i915->uncore, reg, val); 30 } 31 32 static inline void 33 intel_de_rmw(struct drm_i915_private *i915, i915_reg_t reg, u32 clear, u32 set) 34 { 35 intel_uncore_rmw(&i915->uncore, reg, clear, set); 36 } 37 38 static inline int 39 intel_de_wait_for_register(struct drm_i915_private *i915, i915_reg_t reg, 40 u32 mask, u32 value, unsigned int timeout) 41 { 42 return intel_wait_for_register(&i915->uncore, reg, mask, value, timeout); 43 } 44 45 static inline int 46 intel_de_wait_for_set(struct drm_i915_private *i915, i915_reg_t reg, 47 u32 mask, unsigned int timeout) 48 { 49 return intel_de_wait_for_register(i915, reg, mask, mask, timeout); 50 } 51 52 static inline int 53 intel_de_wait_for_clear(struct drm_i915_private *i915, i915_reg_t reg, 54 u32 mask, unsigned int timeout) 55 { 56 return intel_de_wait_for_register(i915, reg, mask, 0, timeout); 57 } 58 59 /* 60 * Unlocked mmio-accessors, think carefully before using these. 61 * 62 * Certain architectures will die if the same cacheline is concurrently accessed 63 * by different clients (e.g. on Ivybridge). Access to registers should 64 * therefore generally be serialised, by either the dev_priv->uncore.lock or 65 * a more localised lock guarding all access to that bank of registers. 66 */ 67 static inline u32 68 intel_de_read_fw(struct drm_i915_private *i915, i915_reg_t reg) 69 { 70 u32 val; 71 72 val = intel_uncore_read_fw(&i915->uncore, reg); 73 trace_i915_reg_rw(false, reg, val, sizeof(val), true); 74 75 return val; 76 } 77 78 static inline void 79 intel_de_write_fw(struct drm_i915_private *i915, i915_reg_t reg, u32 val) 80 { 81 trace_i915_reg_rw(true, reg, val, sizeof(val), true); 82 intel_uncore_write_fw(&i915->uncore, reg, val); 83 } 84 85 #endif /* __INTEL_DE_H__ */ 86