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      1 /*	$NetBSD: intel_sideband.h,v 1.3 2021/12/19 11:38:04 riastradh Exp $	*/
      2 
      3 /* SPDX-License-Identifier: MIT */
      4 
      5 #ifndef _INTEL_SIDEBAND_H_
      6 #define _INTEL_SIDEBAND_H_
      7 
      8 #include <linux/bitops.h>
      9 #include <linux/types.h>
     10 
     11 #include <sys/file.h>
     12 #define	pipe	pipe_drmhack	/* see intel_display.h */
     13 
     14 struct drm_i915_private;
     15 enum pipe;
     16 
     17 enum intel_sbi_destination {
     18 	SBI_ICLK,
     19 	SBI_MPHY,
     20 };
     21 
     22 enum {
     23 	VLV_IOSF_SB_BUNIT,
     24 	VLV_IOSF_SB_CCK,
     25 	VLV_IOSF_SB_CCU,
     26 	VLV_IOSF_SB_DPIO,
     27 	VLV_IOSF_SB_FLISDSI,
     28 	VLV_IOSF_SB_GPIO,
     29 	VLV_IOSF_SB_NC,
     30 	VLV_IOSF_SB_PUNIT,
     31 };
     32 
     33 void vlv_iosf_sb_get(struct drm_i915_private *i915, unsigned long ports);
     34 u32 vlv_iosf_sb_read(struct drm_i915_private *i915, u8 port, u32 reg);
     35 void vlv_iosf_sb_write(struct drm_i915_private *i915,
     36 		       u8 port, u32 reg, u32 val);
     37 void vlv_iosf_sb_put(struct drm_i915_private *i915, unsigned long ports);
     38 
     39 static inline void vlv_bunit_get(struct drm_i915_private *i915)
     40 {
     41 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_BUNIT));
     42 }
     43 
     44 u32 vlv_bunit_read(struct drm_i915_private *i915, u32 reg);
     45 void vlv_bunit_write(struct drm_i915_private *i915, u32 reg, u32 val);
     46 
     47 static inline void vlv_bunit_put(struct drm_i915_private *i915)
     48 {
     49 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_BUNIT));
     50 }
     51 
     52 static inline void vlv_cck_get(struct drm_i915_private *i915)
     53 {
     54 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCK));
     55 }
     56 
     57 u32 vlv_cck_read(struct drm_i915_private *i915, u32 reg);
     58 void vlv_cck_write(struct drm_i915_private *i915, u32 reg, u32 val);
     59 
     60 static inline void vlv_cck_put(struct drm_i915_private *i915)
     61 {
     62 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCK));
     63 }
     64 
     65 static inline void vlv_ccu_get(struct drm_i915_private *i915)
     66 {
     67 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCU));
     68 }
     69 
     70 u32 vlv_ccu_read(struct drm_i915_private *i915, u32 reg);
     71 void vlv_ccu_write(struct drm_i915_private *i915, u32 reg, u32 val);
     72 
     73 static inline void vlv_ccu_put(struct drm_i915_private *i915)
     74 {
     75 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCU));
     76 }
     77 
     78 static inline void vlv_dpio_get(struct drm_i915_private *i915)
     79 {
     80 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_DPIO));
     81 }
     82 
     83 u32 vlv_dpio_read(struct drm_i915_private *i915, enum pipe pipe, int reg);
     84 void vlv_dpio_write(struct drm_i915_private *i915,
     85 		    enum pipe pipe, int reg, u32 val);
     86 
     87 static inline void vlv_dpio_put(struct drm_i915_private *i915)
     88 {
     89 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_DPIO));
     90 }
     91 
     92 static inline void vlv_flisdsi_get(struct drm_i915_private *i915)
     93 {
     94 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_FLISDSI));
     95 }
     96 
     97 u32 vlv_flisdsi_read(struct drm_i915_private *i915, u32 reg);
     98 void vlv_flisdsi_write(struct drm_i915_private *i915, u32 reg, u32 val);
     99 
    100 static inline void vlv_flisdsi_put(struct drm_i915_private *i915)
    101 {
    102 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_FLISDSI));
    103 }
    104 
    105 static inline void vlv_nc_get(struct drm_i915_private *i915)
    106 {
    107 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_NC));
    108 }
    109 
    110 u32 vlv_nc_read(struct drm_i915_private *i915, u8 addr);
    111 
    112 static inline void vlv_nc_put(struct drm_i915_private *i915)
    113 {
    114 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_NC));
    115 }
    116 
    117 static inline void vlv_punit_get(struct drm_i915_private *i915)
    118 {
    119 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_PUNIT));
    120 }
    121 
    122 u32 vlv_punit_read(struct drm_i915_private *i915, u32 addr);
    123 int vlv_punit_write(struct drm_i915_private *i915, u32 addr, u32 val);
    124 
    125 static inline void vlv_punit_put(struct drm_i915_private *i915)
    126 {
    127 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_PUNIT));
    128 }
    129 
    130 u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
    131 		   enum intel_sbi_destination destination);
    132 void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
    133 		     enum intel_sbi_destination destination);
    134 
    135 int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox,
    136 			   u32 *val, u32 *val1);
    137 int sandybridge_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox,
    138 				    u32 val, int fast_timeout_us,
    139 				    int slow_timeout_ms);
    140 #define sandybridge_pcode_write(i915, mbox, val)	\
    141 	sandybridge_pcode_write_timeout(i915, mbox, val, 500, 0)
    142 
    143 int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
    144 		      u32 reply_mask, u32 reply, int timeout_base_ms);
    145 
    146 #endif /* _INTEL_SIDEBAND_H */
    147