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