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intel_sideband.h revision 1.2 
      1 /*	$NetBSD: intel_sideband.h,v 1.2 2021/12/18 23:45:29 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 struct drm_i915_private;
     12 enum pipe;
     13 
     14 enum intel_sbi_destination {
     15 	SBI_ICLK,
     16 	SBI_MPHY,
     17 };
     18 
     19 enum {
     20 	VLV_IOSF_SB_BUNIT,
     21 	VLV_IOSF_SB_CCK,
     22 	VLV_IOSF_SB_CCU,
     23 	VLV_IOSF_SB_DPIO,
     24 	VLV_IOSF_SB_FLISDSI,
     25 	VLV_IOSF_SB_GPIO,
     26 	VLV_IOSF_SB_NC,
     27 	VLV_IOSF_SB_PUNIT,
     28 };
     29 
     30 void vlv_iosf_sb_get(struct drm_i915_private *i915, unsigned long ports);
     31 u32 vlv_iosf_sb_read(struct drm_i915_private *i915, u8 port, u32 reg);
     32 void vlv_iosf_sb_write(struct drm_i915_private *i915,
     33 		       u8 port, u32 reg, u32 val);
     34 void vlv_iosf_sb_put(struct drm_i915_private *i915, unsigned long ports);
     35 
     36 static inline void vlv_bunit_get(struct drm_i915_private *i915)
     37 {
     38 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_BUNIT));
     39 }
     40 
     41 u32 vlv_bunit_read(struct drm_i915_private *i915, u32 reg);
     42 void vlv_bunit_write(struct drm_i915_private *i915, u32 reg, u32 val);
     43 
     44 static inline void vlv_bunit_put(struct drm_i915_private *i915)
     45 {
     46 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_BUNIT));
     47 }
     48 
     49 static inline void vlv_cck_get(struct drm_i915_private *i915)
     50 {
     51 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCK));
     52 }
     53 
     54 u32 vlv_cck_read(struct drm_i915_private *i915, u32 reg);
     55 void vlv_cck_write(struct drm_i915_private *i915, u32 reg, u32 val);
     56 
     57 static inline void vlv_cck_put(struct drm_i915_private *i915)
     58 {
     59 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCK));
     60 }
     61 
     62 static inline void vlv_ccu_get(struct drm_i915_private *i915)
     63 {
     64 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_CCU));
     65 }
     66 
     67 u32 vlv_ccu_read(struct drm_i915_private *i915, u32 reg);
     68 void vlv_ccu_write(struct drm_i915_private *i915, u32 reg, u32 val);
     69 
     70 static inline void vlv_ccu_put(struct drm_i915_private *i915)
     71 {
     72 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_CCU));
     73 }
     74 
     75 static inline void vlv_dpio_get(struct drm_i915_private *i915)
     76 {
     77 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_DPIO));
     78 }
     79 
     80 u32 vlv_dpio_read(struct drm_i915_private *i915, enum pipe pipe, int reg);
     81 void vlv_dpio_write(struct drm_i915_private *i915,
     82 		    enum pipe pipe, int reg, u32 val);
     83 
     84 static inline void vlv_dpio_put(struct drm_i915_private *i915)
     85 {
     86 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_DPIO));
     87 }
     88 
     89 static inline void vlv_flisdsi_get(struct drm_i915_private *i915)
     90 {
     91 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_FLISDSI));
     92 }
     93 
     94 u32 vlv_flisdsi_read(struct drm_i915_private *i915, u32 reg);
     95 void vlv_flisdsi_write(struct drm_i915_private *i915, u32 reg, u32 val);
     96 
     97 static inline void vlv_flisdsi_put(struct drm_i915_private *i915)
     98 {
     99 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_FLISDSI));
    100 }
    101 
    102 static inline void vlv_nc_get(struct drm_i915_private *i915)
    103 {
    104 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_NC));
    105 }
    106 
    107 u32 vlv_nc_read(struct drm_i915_private *i915, u8 addr);
    108 
    109 static inline void vlv_nc_put(struct drm_i915_private *i915)
    110 {
    111 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_NC));
    112 }
    113 
    114 static inline void vlv_punit_get(struct drm_i915_private *i915)
    115 {
    116 	vlv_iosf_sb_get(i915, BIT(VLV_IOSF_SB_PUNIT));
    117 }
    118 
    119 u32 vlv_punit_read(struct drm_i915_private *i915, u32 addr);
    120 int vlv_punit_write(struct drm_i915_private *i915, u32 addr, u32 val);
    121 
    122 static inline void vlv_punit_put(struct drm_i915_private *i915)
    123 {
    124 	vlv_iosf_sb_put(i915, BIT(VLV_IOSF_SB_PUNIT));
    125 }
    126 
    127 u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
    128 		   enum intel_sbi_destination destination);
    129 void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
    130 		     enum intel_sbi_destination destination);
    131 
    132 int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox,
    133 			   u32 *val, u32 *val1);
    134 int sandybridge_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox,
    135 				    u32 val, int fast_timeout_us,
    136 				    int slow_timeout_ms);
    137 #define sandybridge_pcode_write(i915, mbox, val)	\
    138 	sandybridge_pcode_write_timeout(i915, mbox, val, 500, 0)
    139 
    140 int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
    141 		      u32 reply_mask, u32 reply, int timeout_base_ms);
    142 
    143 #endif /* _INTEL_SIDEBAND_H */
    144