drivers/gpu/drm/i915/display/intel_bw.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   5
   6 #ifndef __INTEL_BW_H__
   7 #define __INTEL_BW_H__
   8
   9 #include <drm/drm_atomic.h>
  10
  11 #include "intel_display_limits.h"
  12 #include "intel_display_power.h"
  13 #include "intel_global_state.h"
  14
  15 struct drm_i915_private;
  16 struct intel_atomic_state;
  17 struct intel_crtc_state;
  18
  19 struct intel_dbuf_bw {
  20         unsigned int max_bw[I915_MAX_DBUF_SLICES];
  21         u8 active_planes[I915_MAX_DBUF_SLICES];
  22 };
  23
  24 struct intel_bw_state {
  25         struct intel_global_state base;
  26         struct intel_dbuf_bw dbuf_bw[I915_MAX_PIPES];
  27
  28         /*
  29          * Contains a bit mask, used to determine, whether correspondent
  30          * pipe allows SAGV or not.
  31          */
  32         u8 pipe_sagv_reject;
  33
  34         /* bitmask of active pipes */
  35         u8 active_pipes;
  36
  37         /*
  38          * From MTL onwards, to lock a QGV point, punit expects the peak BW of
  39          * the selected QGV point as the parameter in multiples of 100MB/s
  40          */
  41         u16 qgv_point_peakbw;
  42
  43         /*
  44          * Current QGV points mask, which restricts
  45          * some particular SAGV states, not to confuse
  46          * with pipe_sagv_mask.
  47          */
  48         u16 qgv_points_mask;
  49
  50         int min_cdclk[I915_MAX_PIPES];
  51         unsigned int data_rate[I915_MAX_PIPES];
  52         u8 num_active_planes[I915_MAX_PIPES];
  53 };
  54
  55 #define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base)
  56
  57 struct intel_bw_state *
  58 intel_atomic_get_old_bw_state(struct intel_atomic_state *state);
  59
  60 struct intel_bw_state *
  61 intel_atomic_get_new_bw_state(struct intel_atomic_state *state);
  62
  63 struct intel_bw_state *
  64 intel_atomic_get_bw_state(struct intel_atomic_state *state);
  65
  66 void intel_bw_init_hw(struct drm_i915_private *dev_priv);
  67 int intel_bw_init(struct drm_i915_private *dev_priv);
  68 int intel_bw_atomic_check(struct intel_atomic_state *state);
  69 void intel_bw_crtc_update(struct intel_bw_state *bw_state,
  70                           const struct intel_crtc_state *crtc_state);
  71 int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv,
  72                                   u32 points_mask);
  73 int intel_bw_calc_min_cdclk(struct intel_atomic_state *state,
  74                             bool *need_cdclk_calc);
  75 int intel_bw_min_cdclk(struct drm_i915_private *i915,
  76                        const struct intel_bw_state *bw_state);
  77
  78 #endif /* __INTEL_BW_H__ */