| 1 | // SPDX-License-Identifier: MIT | 
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| 2 | /* | 
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| 3 | * Copyright © 2022 Intel Corporation | 
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| 4 | */ | 
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| 5 |  | 
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| 6 | #include <linux/debugfs.h> | 
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| 7 |  | 
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| 8 | #include <drm/drm_blend.h> | 
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| 9 | #include <drm/drm_print.h> | 
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| 10 |  | 
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| 11 | #include "soc/intel_dram.h" | 
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| 12 | #include "i915_reg.h" | 
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| 13 | #include "i915_utils.h" | 
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| 14 | #include "i9xx_wm.h" | 
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| 15 | #include "intel_atomic.h" | 
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| 16 | #include "intel_bw.h" | 
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| 17 | #include "intel_cdclk.h" | 
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| 18 | #include "intel_crtc.h" | 
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| 19 | #include "intel_cursor_regs.h" | 
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| 20 | #include "intel_de.h" | 
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| 21 | #include "intel_display.h" | 
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| 22 | #include "intel_display_power.h" | 
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| 23 | #include "intel_display_regs.h" | 
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| 24 | #include "intel_display_rpm.h" | 
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| 25 | #include "intel_display_types.h" | 
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| 26 | #include "intel_fb.h" | 
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| 27 | #include "intel_fixed.h" | 
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| 28 | #include "intel_flipq.h" | 
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| 29 | #include "intel_pcode.h" | 
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| 30 | #include "intel_plane.h" | 
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| 31 | #include "intel_wm.h" | 
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| 32 | #include "skl_universal_plane_regs.h" | 
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| 33 | #include "skl_watermark.h" | 
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| 34 | #include "skl_watermark_regs.h" | 
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| 35 |  | 
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| 36 | struct intel_dbuf_state { | 
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| 37 | struct intel_global_state base; | 
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| 38 |  | 
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| 39 | struct skl_ddb_entry ddb[I915_MAX_PIPES]; | 
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| 40 | unsigned int weight[I915_MAX_PIPES]; | 
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| 41 | u8 slices[I915_MAX_PIPES]; | 
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| 42 | u8 enabled_slices; | 
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| 43 | u8 active_pipes; | 
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| 44 | u8 mdclk_cdclk_ratio; | 
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| 45 | bool joined_mbus; | 
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| 46 | }; | 
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| 47 |  | 
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| 48 | #define to_intel_dbuf_state(global_state) \ | 
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| 49 | container_of_const((global_state), struct intel_dbuf_state, base) | 
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| 50 |  | 
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| 51 | #define intel_atomic_get_old_dbuf_state(state) \ | 
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| 52 | to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_intel_display(state)->dbuf.obj)) | 
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| 53 | #define intel_atomic_get_new_dbuf_state(state) \ | 
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| 54 | to_intel_dbuf_state(intel_atomic_get_new_global_obj_state(state, &to_intel_display(state)->dbuf.obj)) | 
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| 55 |  | 
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| 56 | static void skl_sagv_disable(struct intel_display *display); | 
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| 57 |  | 
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| 58 | /* Stores plane specific WM parameters */ | 
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| 59 | struct skl_wm_params { | 
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| 60 | bool x_tiled, y_tiled; | 
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| 61 | bool rc_surface; | 
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| 62 | bool is_planar; | 
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| 63 | u32 width; | 
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| 64 | u8 cpp; | 
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| 65 | u32 plane_pixel_rate; | 
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| 66 | u32 y_min_scanlines; | 
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| 67 | u32 plane_bytes_per_line; | 
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| 68 | uint_fixed_16_16_t plane_blocks_per_line; | 
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| 69 | uint_fixed_16_16_t y_tile_minimum; | 
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| 70 | u32 linetime_us; | 
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| 71 | u32 dbuf_block_size; | 
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| 72 | }; | 
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| 73 |  | 
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| 74 | u8 intel_enabled_dbuf_slices_mask(struct intel_display *display) | 
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| 75 | { | 
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| 76 | u8 enabled_slices = 0; | 
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| 77 | enum dbuf_slice slice; | 
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| 78 |  | 
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| 79 | for_each_dbuf_slice(display, slice) { | 
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| 80 | if (intel_de_read(display, DBUF_CTL_S(slice)) & DBUF_POWER_STATE) | 
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| 81 | enabled_slices |= BIT(slice); | 
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| 82 | } | 
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| 83 |  | 
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| 84 | return enabled_slices; | 
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| 85 | } | 
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| 86 |  | 
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| 87 | /* | 
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| 88 | * FIXME: We still don't have the proper code detect if we need to apply the WA, | 
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| 89 | * so assume we'll always need it in order to avoid underruns. | 
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| 90 | */ | 
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| 91 | static bool skl_needs_memory_bw_wa(struct intel_display *display) | 
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| 92 | { | 
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| 93 | return DISPLAY_VER(display) == 9; | 
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| 94 | } | 
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| 95 |  | 
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| 96 | bool | 
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| 97 | intel_has_sagv(struct intel_display *display) | 
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| 98 | { | 
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| 99 | return HAS_SAGV(display) && display->sagv.status != I915_SAGV_NOT_CONTROLLED; | 
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| 100 | } | 
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| 101 |  | 
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| 102 | static u32 | 
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| 103 | intel_sagv_block_time(struct intel_display *display) | 
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| 104 | { | 
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| 105 | if (DISPLAY_VER(display) >= 14) { | 
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| 106 | u32 val; | 
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| 107 |  | 
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| 108 | val = intel_de_read(display, MTL_LATENCY_SAGV); | 
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| 109 |  | 
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| 110 | return REG_FIELD_GET(MTL_LATENCY_QCLK_SAGV, val); | 
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| 111 | } else if (DISPLAY_VER(display) >= 12) { | 
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| 112 | u32 val = 0; | 
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| 113 | int ret; | 
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| 114 |  | 
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| 115 | ret = intel_pcode_read(drm: display->drm, | 
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| 116 | GEN12_PCODE_READ_SAGV_BLOCK_TIME_US, | 
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| 117 | val: &val, NULL); | 
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| 118 | if (ret) { | 
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| 119 | drm_dbg_kms(display->drm, "Couldn't read SAGV block time!\n"); | 
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| 120 | return 0; | 
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| 121 | } | 
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| 122 |  | 
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| 123 | return val; | 
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| 124 | } else if (DISPLAY_VER(display) == 11) { | 
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| 125 | return 10; | 
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| 126 | } else if (HAS_SAGV(display)) { | 
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| 127 | return 30; | 
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| 128 | } else { | 
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| 129 | return 0; | 
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| 130 | } | 
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| 131 | } | 
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| 132 |  | 
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| 133 | static void intel_sagv_init(struct intel_display *display) | 
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| 134 | { | 
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| 135 | if (!HAS_SAGV(display)) | 
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| 136 | display->sagv.status = I915_SAGV_NOT_CONTROLLED; | 
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| 137 |  | 
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| 138 | /* | 
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| 139 | * Probe to see if we have working SAGV control. | 
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| 140 | * For icl+ this was already determined by intel_bw_init_hw(). | 
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| 141 | */ | 
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| 142 | if (DISPLAY_VER(display) < 11) | 
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| 143 | skl_sagv_disable(display); | 
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| 144 |  | 
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| 145 | drm_WARN_ON(display->drm, display->sagv.status == I915_SAGV_UNKNOWN); | 
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| 146 |  | 
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| 147 | display->sagv.block_time_us = intel_sagv_block_time(display); | 
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| 148 |  | 
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| 149 | drm_dbg_kms(display->drm, "SAGV supported: %s, original SAGV block time: %u us\n", | 
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| 150 | str_yes_no(intel_has_sagv(display)), display->sagv.block_time_us); | 
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| 151 |  | 
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| 152 | /* avoid overflow when adding with wm0 latency/etc. */ | 
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| 153 | if (drm_WARN(display->drm, display->sagv.block_time_us > U16_MAX, | 
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| 154 | "Excessive SAGV block time %u, ignoring\n", | 
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| 155 | display->sagv.block_time_us)) | 
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| 156 | display->sagv.block_time_us = 0; | 
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| 157 |  | 
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| 158 | if (!intel_has_sagv(display)) | 
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| 159 | display->sagv.block_time_us = 0; | 
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| 160 | } | 
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| 161 |  | 
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| 162 | /* | 
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| 163 | * SAGV dynamically adjusts the system agent voltage and clock frequencies | 
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| 164 | * depending on power and performance requirements. The display engine access | 
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| 165 | * to system memory is blocked during the adjustment time. Because of the | 
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| 166 | * blocking time, having this enabled can cause full system hangs and/or pipe | 
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| 167 | * underruns if we don't meet all of the following requirements: | 
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| 168 | * | 
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| 169 | *  - <= 1 pipe enabled | 
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| 170 | *  - All planes can enable watermarks for latencies >= SAGV engine block time | 
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| 171 | *  - We're not using an interlaced display configuration | 
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| 172 | */ | 
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| 173 | static void skl_sagv_enable(struct intel_display *display) | 
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| 174 | { | 
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| 175 | int ret; | 
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| 176 |  | 
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| 177 | if (!intel_has_sagv(display)) | 
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| 178 | return; | 
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| 179 |  | 
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| 180 | if (display->sagv.status == I915_SAGV_ENABLED) | 
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| 181 | return; | 
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| 182 |  | 
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| 183 | drm_dbg_kms(display->drm, "Enabling SAGV\n"); | 
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| 184 | ret = intel_pcode_write(display->drm, GEN9_PCODE_SAGV_CONTROL, | 
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| 185 | GEN9_SAGV_ENABLE); | 
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| 186 |  | 
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| 187 | /* We don't need to wait for SAGV when enabling */ | 
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| 188 |  | 
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| 189 | /* | 
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| 190 | * Some skl systems, pre-release machines in particular, | 
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| 191 | * don't actually have SAGV. | 
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| 192 | */ | 
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| 193 | if (display->platform.skylake && ret == -ENXIO) { | 
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| 194 | drm_dbg(display->drm, "No SAGV found on system, ignoring\n"); | 
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| 195 | display->sagv.status = I915_SAGV_NOT_CONTROLLED; | 
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| 196 | return; | 
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| 197 | } else if (ret < 0) { | 
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| 198 | drm_err(display->drm, "Failed to enable SAGV\n"); | 
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| 199 | return; | 
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| 200 | } | 
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| 201 |  | 
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| 202 | display->sagv.status = I915_SAGV_ENABLED; | 
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| 203 | } | 
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| 204 |  | 
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| 205 | static void skl_sagv_disable(struct intel_display *display) | 
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| 206 | { | 
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| 207 | int ret; | 
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| 208 |  | 
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| 209 | if (!intel_has_sagv(display)) | 
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| 210 | return; | 
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| 211 |  | 
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| 212 | if (display->sagv.status == I915_SAGV_DISABLED) | 
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| 213 | return; | 
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| 214 |  | 
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| 215 | drm_dbg_kms(display->drm, "Disabling SAGV\n"); | 
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| 216 | /* bspec says to keep retrying for at least 1 ms */ | 
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| 217 | ret = intel_pcode_request(drm: display->drm, GEN9_PCODE_SAGV_CONTROL, | 
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| 218 | GEN9_SAGV_DISABLE, | 
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| 219 | GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED, timeout_base_ms: 1); | 
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| 220 | /* | 
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| 221 | * Some skl systems, pre-release machines in particular, | 
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| 222 | * don't actually have SAGV. | 
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| 223 | */ | 
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| 224 | if (display->platform.skylake && ret == -ENXIO) { | 
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| 225 | drm_dbg(display->drm, "No SAGV found on system, ignoring\n"); | 
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| 226 | display->sagv.status = I915_SAGV_NOT_CONTROLLED; | 
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| 227 | return; | 
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| 228 | } else if (ret < 0) { | 
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| 229 | drm_err(display->drm, "Failed to disable SAGV (%d)\n", ret); | 
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| 230 | return; | 
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| 231 | } | 
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| 232 |  | 
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| 233 | display->sagv.status = I915_SAGV_DISABLED; | 
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| 234 | } | 
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| 235 |  | 
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| 236 | static void skl_sagv_pre_plane_update(struct intel_atomic_state *state) | 
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| 237 | { | 
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| 238 | struct intel_display *display = to_intel_display(state); | 
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| 239 | const struct intel_bw_state *new_bw_state = | 
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| 240 | intel_atomic_get_new_bw_state(state); | 
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| 241 |  | 
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| 242 | if (!new_bw_state) | 
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| 243 | return; | 
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| 244 |  | 
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| 245 | if (!intel_bw_can_enable_sagv(display, bw_state: new_bw_state)) | 
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| 246 | skl_sagv_disable(display); | 
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| 247 | } | 
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| 248 |  | 
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| 249 | static void skl_sagv_post_plane_update(struct intel_atomic_state *state) | 
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| 250 | { | 
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| 251 | struct intel_display *display = to_intel_display(state); | 
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| 252 | const struct intel_bw_state *new_bw_state = | 
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| 253 | intel_atomic_get_new_bw_state(state); | 
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| 254 |  | 
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| 255 | if (!new_bw_state) | 
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| 256 | return; | 
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| 257 |  | 
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| 258 | if (intel_bw_can_enable_sagv(display, bw_state: new_bw_state)) | 
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| 259 | skl_sagv_enable(display); | 
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| 260 | } | 
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| 261 |  | 
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| 262 | void intel_sagv_pre_plane_update(struct intel_atomic_state *state) | 
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| 263 | { | 
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| 264 | struct intel_display *display = to_intel_display(state); | 
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| 265 |  | 
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| 266 | /* | 
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| 267 | * Just return if we can't control SAGV or don't have it. | 
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| 268 | * This is different from situation when we have SAGV but just can't | 
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| 269 | * afford it due to DBuf limitation - in case if SAGV is completely | 
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| 270 | * disabled in a BIOS, we are not even allowed to send a PCode request, | 
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| 271 | * as it will throw an error. So have to check it here. | 
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| 272 | */ | 
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| 273 | if (!intel_has_sagv(display)) | 
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| 274 | return; | 
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| 275 |  | 
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| 276 | if (DISPLAY_VER(display) >= 11) | 
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| 277 | icl_sagv_pre_plane_update(state); | 
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| 278 | else | 
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| 279 | skl_sagv_pre_plane_update(state); | 
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| 280 | } | 
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| 281 |  | 
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| 282 | void intel_sagv_post_plane_update(struct intel_atomic_state *state) | 
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| 283 | { | 
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| 284 | struct intel_display *display = to_intel_display(state); | 
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| 285 |  | 
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| 286 | /* | 
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| 287 | * Just return if we can't control SAGV or don't have it. | 
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| 288 | * This is different from situation when we have SAGV but just can't | 
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| 289 | * afford it due to DBuf limitation - in case if SAGV is completely | 
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| 290 | * disabled in a BIOS, we are not even allowed to send a PCode request, | 
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| 291 | * as it will throw an error. So have to check it here. | 
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| 292 | */ | 
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| 293 | if (!intel_has_sagv(display)) | 
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| 294 | return; | 
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| 295 |  | 
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| 296 | if (DISPLAY_VER(display) >= 11) | 
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| 297 | icl_sagv_post_plane_update(state); | 
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| 298 | else | 
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| 299 | skl_sagv_post_plane_update(state); | 
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| 300 | } | 
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| 301 |  | 
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| 302 | static bool skl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) | 
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| 303 | { | 
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| 304 | struct intel_display *display = to_intel_display(crtc_state); | 
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| 305 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
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| 306 | enum plane_id plane_id; | 
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| 307 | int max_level = INT_MAX; | 
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| 308 |  | 
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| 309 | if (!intel_has_sagv(display)) | 
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| 310 | return false; | 
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| 311 |  | 
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| 312 | if (!crtc_state->hw.active) | 
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| 313 | return true; | 
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| 314 |  | 
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| 315 | if (crtc_state->hw.pipe_mode.flags & DRM_MODE_FLAG_INTERLACE) | 
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| 316 | return false; | 
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| 317 |  | 
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| 318 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
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| 319 | const struct skl_plane_wm *wm = | 
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| 320 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
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| 321 | int level; | 
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| 322 |  | 
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| 323 | /* Skip this plane if it's not enabled */ | 
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| 324 | if (!wm->wm[0].enable) | 
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| 325 | continue; | 
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| 326 |  | 
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| 327 | /* Find the highest enabled wm level for this plane */ | 
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| 328 | for (level = display->wm.num_levels - 1; | 
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| 329 | !wm->wm[level].enable; --level) | 
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| 330 | { } | 
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| 331 |  | 
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| 332 | /* Highest common enabled wm level for all planes */ | 
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| 333 | max_level = min(level, max_level); | 
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| 334 | } | 
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| 335 |  | 
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| 336 | /* No enabled planes? */ | 
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| 337 | if (max_level == INT_MAX) | 
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| 338 | return true; | 
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| 339 |  | 
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| 340 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
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| 341 | const struct skl_plane_wm *wm = | 
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| 342 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
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| 343 |  | 
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| 344 | /* | 
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| 345 | * All enabled planes must have enabled a common wm level that | 
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| 346 | * can tolerate memory latencies higher than sagv_block_time_us | 
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| 347 | */ | 
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| 348 | if (wm->wm[0].enable && !wm->wm[max_level].can_sagv) | 
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| 349 | return false; | 
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| 350 | } | 
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| 351 |  | 
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| 352 | return true; | 
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| 353 | } | 
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| 354 |  | 
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| 355 | static bool tgl_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) | 
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| 356 | { | 
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| 357 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
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| 358 | enum plane_id plane_id; | 
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| 359 |  | 
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| 360 | if (!crtc_state->hw.active) | 
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| 361 | return true; | 
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| 362 |  | 
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| 363 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
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| 364 | const struct skl_plane_wm *wm = | 
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| 365 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
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| 366 |  | 
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| 367 | if (wm->wm[0].enable && !wm->sagv.wm0.enable) | 
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| 368 | return false; | 
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| 369 | } | 
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| 370 |  | 
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| 371 | return true; | 
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| 372 | } | 
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| 373 |  | 
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| 374 | bool intel_crtc_can_enable_sagv(const struct intel_crtc_state *crtc_state) | 
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| 375 | { | 
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| 376 | struct intel_display *display = to_intel_display(crtc_state); | 
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| 377 |  | 
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| 378 | if (!display->params.enable_sagv) | 
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| 379 | return false; | 
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| 380 |  | 
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| 381 | /* | 
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| 382 | * SAGV is initially forced off because its current | 
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| 383 | * state can't be queried from pcode. Allow SAGV to | 
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| 384 | * be enabled upon the first real commit. | 
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| 385 | */ | 
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| 386 | if (crtc_state->inherited) | 
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| 387 | return false; | 
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| 388 |  | 
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| 389 | if (DISPLAY_VER(display) >= 12) | 
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| 390 | return tgl_crtc_can_enable_sagv(crtc_state); | 
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| 391 | else | 
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| 392 | return skl_crtc_can_enable_sagv(crtc_state); | 
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| 393 | } | 
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| 394 |  | 
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| 395 | static u16 skl_ddb_entry_init(struct skl_ddb_entry *entry, | 
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| 396 | u16 start, u16 end) | 
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| 397 | { | 
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| 398 | entry->start = start; | 
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| 399 | entry->end = end; | 
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| 400 |  | 
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| 401 | return end; | 
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| 402 | } | 
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| 403 |  | 
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| 404 | static int intel_dbuf_slice_size(struct intel_display *display) | 
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| 405 | { | 
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| 406 | return DISPLAY_INFO(display)->dbuf.size / | 
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| 407 | hweight8(DISPLAY_INFO(display)->dbuf.slice_mask); | 
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| 408 | } | 
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| 409 |  | 
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| 410 | static void | 
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| 411 | skl_ddb_entry_for_slices(struct intel_display *display, u8 slice_mask, | 
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| 412 | struct skl_ddb_entry *ddb) | 
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| 413 | { | 
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| 414 | int slice_size = intel_dbuf_slice_size(display); | 
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| 415 |  | 
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| 416 | if (!slice_mask) { | 
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| 417 | ddb->start = 0; | 
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| 418 | ddb->end = 0; | 
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| 419 | return; | 
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| 420 | } | 
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| 421 |  | 
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| 422 | ddb->start = (ffs(slice_mask) - 1) * slice_size; | 
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| 423 | ddb->end = fls(x: slice_mask) * slice_size; | 
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| 424 |  | 
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| 425 | WARN_ON(ddb->start >= ddb->end); | 
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| 426 | WARN_ON(ddb->end > DISPLAY_INFO(display)->dbuf.size); | 
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| 427 | } | 
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| 428 |  | 
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| 429 | static unsigned int mbus_ddb_offset(struct intel_display *display, u8 slice_mask) | 
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| 430 | { | 
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| 431 | struct skl_ddb_entry ddb; | 
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| 432 |  | 
|---|
| 433 | if (slice_mask & (BIT(DBUF_S1) | BIT(DBUF_S2))) | 
|---|
| 434 | slice_mask = BIT(DBUF_S1); | 
|---|
| 435 | else if (slice_mask & (BIT(DBUF_S3) | BIT(DBUF_S4))) | 
|---|
| 436 | slice_mask = BIT(DBUF_S3); | 
|---|
| 437 |  | 
|---|
| 438 | skl_ddb_entry_for_slices(display, slice_mask, ddb: &ddb); | 
|---|
| 439 |  | 
|---|
| 440 | return ddb.start; | 
|---|
| 441 | } | 
|---|
| 442 |  | 
|---|
| 443 | u32 skl_ddb_dbuf_slice_mask(struct intel_display *display, | 
|---|
| 444 | const struct skl_ddb_entry *entry) | 
|---|
| 445 | { | 
|---|
| 446 | int slice_size = intel_dbuf_slice_size(display); | 
|---|
| 447 | enum dbuf_slice start_slice, end_slice; | 
|---|
| 448 | u8 slice_mask = 0; | 
|---|
| 449 |  | 
|---|
| 450 | if (!skl_ddb_entry_size(entry)) | 
|---|
| 451 | return 0; | 
|---|
| 452 |  | 
|---|
| 453 | start_slice = entry->start / slice_size; | 
|---|
| 454 | end_slice = (entry->end - 1) / slice_size; | 
|---|
| 455 |  | 
|---|
| 456 | /* | 
|---|
| 457 | * Per plane DDB entry can in a really worst case be on multiple slices | 
|---|
| 458 | * but single entry is anyway contiguous. | 
|---|
| 459 | */ | 
|---|
| 460 | while (start_slice <= end_slice) { | 
|---|
| 461 | slice_mask |= BIT(start_slice); | 
|---|
| 462 | start_slice++; | 
|---|
| 463 | } | 
|---|
| 464 |  | 
|---|
| 465 | return slice_mask; | 
|---|
| 466 | } | 
|---|
| 467 |  | 
|---|
| 468 | static unsigned int intel_crtc_ddb_weight(const struct intel_crtc_state *crtc_state) | 
|---|
| 469 | { | 
|---|
| 470 | const struct drm_display_mode *pipe_mode = &crtc_state->hw.pipe_mode; | 
|---|
| 471 | int hdisplay, vdisplay; | 
|---|
| 472 |  | 
|---|
| 473 | if (!crtc_state->hw.active) | 
|---|
| 474 | return 0; | 
|---|
| 475 |  | 
|---|
| 476 | /* | 
|---|
| 477 | * Watermark/ddb requirement highly depends upon width of the | 
|---|
| 478 | * framebuffer, So instead of allocating DDB equally among pipes | 
|---|
| 479 | * distribute DDB based on resolution/width of the display. | 
|---|
| 480 | */ | 
|---|
| 481 | drm_mode_get_hv_timing(mode: pipe_mode, hdisplay: &hdisplay, vdisplay: &vdisplay); | 
|---|
| 482 |  | 
|---|
| 483 | return hdisplay; | 
|---|
| 484 | } | 
|---|
| 485 |  | 
|---|
| 486 | static void intel_crtc_dbuf_weights(const struct intel_dbuf_state *dbuf_state, | 
|---|
| 487 | enum pipe for_pipe, | 
|---|
| 488 | unsigned int *weight_start, | 
|---|
| 489 | unsigned int *weight_end, | 
|---|
| 490 | unsigned int *weight_total) | 
|---|
| 491 | { | 
|---|
| 492 | struct intel_display *display = to_intel_display(dbuf_state->base.state->base.dev); | 
|---|
| 493 | enum pipe pipe; | 
|---|
| 494 |  | 
|---|
| 495 | *weight_start = 0; | 
|---|
| 496 | *weight_end = 0; | 
|---|
| 497 | *weight_total = 0; | 
|---|
| 498 |  | 
|---|
| 499 | for_each_pipe(display, pipe) { | 
|---|
| 500 | int weight = dbuf_state->weight[pipe]; | 
|---|
| 501 |  | 
|---|
| 502 | /* | 
|---|
| 503 | * Do not account pipes using other slice sets | 
|---|
| 504 | * luckily as of current BSpec slice sets do not partially | 
|---|
| 505 | * intersect(pipes share either same one slice or same slice set | 
|---|
| 506 | * i.e no partial intersection), so it is enough to check for | 
|---|
| 507 | * equality for now. | 
|---|
| 508 | */ | 
|---|
| 509 | if (dbuf_state->slices[pipe] != dbuf_state->slices[for_pipe]) | 
|---|
| 510 | continue; | 
|---|
| 511 |  | 
|---|
| 512 | *weight_total += weight; | 
|---|
| 513 | if (pipe < for_pipe) { | 
|---|
| 514 | *weight_start += weight; | 
|---|
| 515 | *weight_end += weight; | 
|---|
| 516 | } else if (pipe == for_pipe) { | 
|---|
| 517 | *weight_end += weight; | 
|---|
| 518 | } | 
|---|
| 519 | } | 
|---|
| 520 | } | 
|---|
| 521 |  | 
|---|
| 522 | static int | 
|---|
| 523 | skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc) | 
|---|
| 524 | { | 
|---|
| 525 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 526 | unsigned int weight_total, weight_start, weight_end; | 
|---|
| 527 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 528 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 529 | struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 530 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 531 | struct intel_crtc_state *crtc_state; | 
|---|
| 532 | struct skl_ddb_entry ddb_slices; | 
|---|
| 533 | enum pipe pipe = crtc->pipe; | 
|---|
| 534 | unsigned int mbus_offset = 0; | 
|---|
| 535 | u32 ddb_range_size; | 
|---|
| 536 | u32 dbuf_slice_mask; | 
|---|
| 537 | u32 start, end; | 
|---|
| 538 | int ret; | 
|---|
| 539 |  | 
|---|
| 540 | if (new_dbuf_state->weight[pipe] == 0) { | 
|---|
| 541 | skl_ddb_entry_init(entry: &new_dbuf_state->ddb[pipe], start: 0, end: 0); | 
|---|
| 542 | goto out; | 
|---|
| 543 | } | 
|---|
| 544 |  | 
|---|
| 545 | dbuf_slice_mask = new_dbuf_state->slices[pipe]; | 
|---|
| 546 |  | 
|---|
| 547 | skl_ddb_entry_for_slices(display, slice_mask: dbuf_slice_mask, ddb: &ddb_slices); | 
|---|
| 548 | mbus_offset = mbus_ddb_offset(display, slice_mask: dbuf_slice_mask); | 
|---|
| 549 | ddb_range_size = skl_ddb_entry_size(entry: &ddb_slices); | 
|---|
| 550 |  | 
|---|
| 551 | intel_crtc_dbuf_weights(dbuf_state: new_dbuf_state, for_pipe: pipe, | 
|---|
| 552 | weight_start: &weight_start, weight_end: &weight_end, weight_total: &weight_total); | 
|---|
| 553 |  | 
|---|
| 554 | start = ddb_range_size * weight_start / weight_total; | 
|---|
| 555 | end = ddb_range_size * weight_end / weight_total; | 
|---|
| 556 |  | 
|---|
| 557 | skl_ddb_entry_init(entry: &new_dbuf_state->ddb[pipe], | 
|---|
| 558 | start: ddb_slices.start - mbus_offset + start, | 
|---|
| 559 | end: ddb_slices.start - mbus_offset + end); | 
|---|
| 560 |  | 
|---|
| 561 | out: | 
|---|
| 562 | if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe] && | 
|---|
| 563 | skl_ddb_entry_equal(e1: &old_dbuf_state->ddb[pipe], | 
|---|
| 564 | e2: &new_dbuf_state->ddb[pipe])) | 
|---|
| 565 | return 0; | 
|---|
| 566 |  | 
|---|
| 567 | ret = intel_atomic_lock_global_state(obj_state: &new_dbuf_state->base); | 
|---|
| 568 | if (ret) | 
|---|
| 569 | return ret; | 
|---|
| 570 |  | 
|---|
| 571 | crtc_state = intel_atomic_get_crtc_state(state: &state->base, crtc); | 
|---|
| 572 | if (IS_ERR(ptr: crtc_state)) | 
|---|
| 573 | return PTR_ERR(ptr: crtc_state); | 
|---|
| 574 |  | 
|---|
| 575 | /* | 
|---|
| 576 | * Used for checking overlaps, so we need absolute | 
|---|
| 577 | * offsets instead of MBUS relative offsets. | 
|---|
| 578 | */ | 
|---|
| 579 | crtc_state->wm.skl.ddb.start = mbus_offset + new_dbuf_state->ddb[pipe].start; | 
|---|
| 580 | crtc_state->wm.skl.ddb.end = mbus_offset + new_dbuf_state->ddb[pipe].end; | 
|---|
| 581 |  | 
|---|
| 582 | drm_dbg_kms(display->drm, | 
|---|
| 583 | "[CRTC:%d:%s] dbuf slices 0x%x -> 0x%x, ddb (%d - %d) -> (%d - %d), active pipes 0x%x -> 0x%x\n", | 
|---|
| 584 | crtc->base.base.id, crtc->base.name, | 
|---|
| 585 | old_dbuf_state->slices[pipe], new_dbuf_state->slices[pipe], | 
|---|
| 586 | old_dbuf_state->ddb[pipe].start, old_dbuf_state->ddb[pipe].end, | 
|---|
| 587 | new_dbuf_state->ddb[pipe].start, new_dbuf_state->ddb[pipe].end, | 
|---|
| 588 | old_dbuf_state->active_pipes, new_dbuf_state->active_pipes); | 
|---|
| 589 |  | 
|---|
| 590 | return 0; | 
|---|
| 591 | } | 
|---|
| 592 |  | 
|---|
| 593 | static int skl_compute_wm_params(const struct intel_crtc_state *crtc_state, | 
|---|
| 594 | int width, const struct drm_format_info *format, | 
|---|
| 595 | u64 modifier, unsigned int rotation, | 
|---|
| 596 | u32 plane_pixel_rate, struct skl_wm_params *wp, | 
|---|
| 597 | int color_plane, unsigned int pan_x); | 
|---|
| 598 |  | 
|---|
| 599 | static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state, | 
|---|
| 600 | struct intel_plane *plane, | 
|---|
| 601 | int level, | 
|---|
| 602 | unsigned int latency, | 
|---|
| 603 | const struct skl_wm_params *wp, | 
|---|
| 604 | const struct skl_wm_level *result_prev, | 
|---|
| 605 | struct skl_wm_level *result /* out */); | 
|---|
| 606 |  | 
|---|
| 607 | static unsigned int skl_wm_latency(struct intel_display *display, int level, | 
|---|
| 608 | const struct skl_wm_params *wp) | 
|---|
| 609 | { | 
|---|
| 610 | unsigned int latency = display->wm.skl_latency[level]; | 
|---|
| 611 |  | 
|---|
| 612 | if (latency == 0) | 
|---|
| 613 | return 0; | 
|---|
| 614 |  | 
|---|
| 615 | /* | 
|---|
| 616 | * WaIncreaseLatencyIPCEnabled: kbl,cfl | 
|---|
| 617 | * Display WA #1141: kbl,cfl | 
|---|
| 618 | */ | 
|---|
| 619 | if ((display->platform.kabylake || display->platform.coffeelake || | 
|---|
| 620 | display->platform.cometlake) && skl_watermark_ipc_enabled(display)) | 
|---|
| 621 | latency += 4; | 
|---|
| 622 |  | 
|---|
| 623 | if (skl_needs_memory_bw_wa(display) && wp && wp->x_tiled) | 
|---|
| 624 | latency += 15; | 
|---|
| 625 |  | 
|---|
| 626 | return latency; | 
|---|
| 627 | } | 
|---|
| 628 |  | 
|---|
| 629 | static unsigned int | 
|---|
| 630 | skl_cursor_allocation(const struct intel_crtc_state *crtc_state, | 
|---|
| 631 | int num_active) | 
|---|
| 632 | { | 
|---|
| 633 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 634 | struct intel_plane *plane = to_intel_plane(crtc_state->uapi.crtc->cursor); | 
|---|
| 635 | struct skl_wm_level wm = {}; | 
|---|
| 636 | int ret, min_ddb_alloc = 0; | 
|---|
| 637 | struct skl_wm_params wp; | 
|---|
| 638 | int level; | 
|---|
| 639 |  | 
|---|
| 640 | ret = skl_compute_wm_params(crtc_state, width: 256, | 
|---|
| 641 | format: drm_format_info(DRM_FORMAT_ARGB8888), | 
|---|
| 642 | DRM_FORMAT_MOD_LINEAR, | 
|---|
| 643 | DRM_MODE_ROTATE_0, | 
|---|
| 644 | plane_pixel_rate: crtc_state->pixel_rate, wp: &wp, color_plane: 0, pan_x: 0); | 
|---|
| 645 | drm_WARN_ON(display->drm, ret); | 
|---|
| 646 |  | 
|---|
| 647 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 648 | unsigned int latency = skl_wm_latency(display, level, wp: &wp); | 
|---|
| 649 |  | 
|---|
| 650 | skl_compute_plane_wm(crtc_state, plane, level, latency, wp: &wp, result_prev: &wm, result: &wm); | 
|---|
| 651 | if (wm.min_ddb_alloc == U16_MAX) | 
|---|
| 652 | break; | 
|---|
| 653 |  | 
|---|
| 654 | min_ddb_alloc = wm.min_ddb_alloc; | 
|---|
| 655 | } | 
|---|
| 656 |  | 
|---|
| 657 | return max(num_active == 1 ? 32 : 8, min_ddb_alloc); | 
|---|
| 658 | } | 
|---|
| 659 |  | 
|---|
| 660 | static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg) | 
|---|
| 661 | { | 
|---|
| 662 | skl_ddb_entry_init(entry, | 
|---|
| 663 | REG_FIELD_GET(PLANE_BUF_START_MASK, reg), | 
|---|
| 664 | REG_FIELD_GET(PLANE_BUF_END_MASK, reg)); | 
|---|
| 665 | if (entry->end) | 
|---|
| 666 | entry->end++; | 
|---|
| 667 | } | 
|---|
| 668 |  | 
|---|
| 669 | static void | 
|---|
| 670 | skl_ddb_get_hw_plane_state(struct intel_display *display, | 
|---|
| 671 | const enum pipe pipe, | 
|---|
| 672 | const enum plane_id plane_id, | 
|---|
| 673 | struct skl_ddb_entry *ddb, | 
|---|
| 674 | struct skl_ddb_entry *ddb_y, | 
|---|
| 675 | u16 *min_ddb, u16 *interim_ddb) | 
|---|
| 676 | { | 
|---|
| 677 | u32 val; | 
|---|
| 678 |  | 
|---|
| 679 | /* Cursor doesn't support NV12/planar, so no extra calculation needed */ | 
|---|
| 680 | if (plane_id == PLANE_CURSOR) { | 
|---|
| 681 | val = intel_de_read(display, CUR_BUF_CFG(pipe)); | 
|---|
| 682 | skl_ddb_entry_init_from_hw(entry: ddb, reg: val); | 
|---|
| 683 | return; | 
|---|
| 684 | } | 
|---|
| 685 |  | 
|---|
| 686 | val = intel_de_read(display, PLANE_BUF_CFG(pipe, plane_id)); | 
|---|
| 687 | skl_ddb_entry_init_from_hw(entry: ddb, reg: val); | 
|---|
| 688 |  | 
|---|
| 689 | if (DISPLAY_VER(display) >= 30) { | 
|---|
| 690 | val = intel_de_read(display, PLANE_MIN_BUF_CFG(pipe, plane_id)); | 
|---|
| 691 |  | 
|---|
| 692 | *min_ddb = REG_FIELD_GET(PLANE_MIN_DBUF_BLOCKS_MASK, val); | 
|---|
| 693 | *interim_ddb = REG_FIELD_GET(PLANE_INTERIM_DBUF_BLOCKS_MASK, val); | 
|---|
| 694 | } | 
|---|
| 695 |  | 
|---|
| 696 | if (DISPLAY_VER(display) >= 11) | 
|---|
| 697 | return; | 
|---|
| 698 |  | 
|---|
| 699 | val = intel_de_read(display, PLANE_NV12_BUF_CFG(pipe, plane_id)); | 
|---|
| 700 | skl_ddb_entry_init_from_hw(entry: ddb_y, reg: val); | 
|---|
| 701 | } | 
|---|
| 702 |  | 
|---|
| 703 | static void skl_pipe_ddb_get_hw_state(struct intel_crtc *crtc, | 
|---|
| 704 | struct skl_ddb_entry *ddb, | 
|---|
| 705 | struct skl_ddb_entry *ddb_y, | 
|---|
| 706 | u16 *min_ddb, u16 *interim_ddb) | 
|---|
| 707 | { | 
|---|
| 708 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 709 | enum intel_display_power_domain power_domain; | 
|---|
| 710 | enum pipe pipe = crtc->pipe; | 
|---|
| 711 | intel_wakeref_t wakeref; | 
|---|
| 712 | enum plane_id plane_id; | 
|---|
| 713 |  | 
|---|
| 714 | power_domain = POWER_DOMAIN_PIPE(pipe); | 
|---|
| 715 | wakeref = intel_display_power_get_if_enabled(display, domain: power_domain); | 
|---|
| 716 | if (!wakeref) | 
|---|
| 717 | return; | 
|---|
| 718 |  | 
|---|
| 719 | for_each_plane_id_on_crtc(crtc, plane_id) | 
|---|
| 720 | skl_ddb_get_hw_plane_state(display, pipe, | 
|---|
| 721 | plane_id, | 
|---|
| 722 | ddb: &ddb[plane_id], | 
|---|
| 723 | ddb_y: &ddb_y[plane_id], | 
|---|
| 724 | min_ddb: &min_ddb[plane_id], | 
|---|
| 725 | interim_ddb: &interim_ddb[plane_id]); | 
|---|
| 726 |  | 
|---|
| 727 | intel_display_power_put(display, domain: power_domain, wakeref); | 
|---|
| 728 | } | 
|---|
| 729 |  | 
|---|
| 730 | struct dbuf_slice_conf_entry { | 
|---|
| 731 | u8 active_pipes; | 
|---|
| 732 | u8 dbuf_mask[I915_MAX_PIPES]; | 
|---|
| 733 | bool join_mbus; | 
|---|
| 734 | }; | 
|---|
| 735 |  | 
|---|
| 736 | /* | 
|---|
| 737 | * Table taken from Bspec 12716 | 
|---|
| 738 | * Pipes do have some preferred DBuf slice affinity, | 
|---|
| 739 | * plus there are some hardcoded requirements on how | 
|---|
| 740 | * those should be distributed for multipipe scenarios. | 
|---|
| 741 | * For more DBuf slices algorithm can get even more messy | 
|---|
| 742 | * and less readable, so decided to use a table almost | 
|---|
| 743 | * as is from BSpec itself - that way it is at least easier | 
|---|
| 744 | * to compare, change and check. | 
|---|
| 745 | */ | 
|---|
| 746 | static const struct dbuf_slice_conf_entry icl_allowed_dbufs[] = | 
|---|
| 747 | /* Autogenerated with igt/tools/intel_dbuf_map tool: */ | 
|---|
| 748 | { | 
|---|
| 749 | { | 
|---|
| 750 | .active_pipes = BIT(PIPE_A), | 
|---|
| 751 | .dbuf_mask = { | 
|---|
| 752 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 753 | }, | 
|---|
| 754 | }, | 
|---|
| 755 | { | 
|---|
| 756 | .active_pipes = BIT(PIPE_B), | 
|---|
| 757 | .dbuf_mask = { | 
|---|
| 758 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 759 | }, | 
|---|
| 760 | }, | 
|---|
| 761 | { | 
|---|
| 762 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), | 
|---|
| 763 | .dbuf_mask = { | 
|---|
| 764 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 765 | [PIPE_B] = BIT(DBUF_S2), | 
|---|
| 766 | }, | 
|---|
| 767 | }, | 
|---|
| 768 | { | 
|---|
| 769 | .active_pipes = BIT(PIPE_C), | 
|---|
| 770 | .dbuf_mask = { | 
|---|
| 771 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 772 | }, | 
|---|
| 773 | }, | 
|---|
| 774 | { | 
|---|
| 775 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), | 
|---|
| 776 | .dbuf_mask = { | 
|---|
| 777 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 778 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 779 | }, | 
|---|
| 780 | }, | 
|---|
| 781 | { | 
|---|
| 782 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 783 | .dbuf_mask = { | 
|---|
| 784 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 785 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 786 | }, | 
|---|
| 787 | }, | 
|---|
| 788 | { | 
|---|
| 789 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 790 | .dbuf_mask = { | 
|---|
| 791 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 792 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 793 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 794 | }, | 
|---|
| 795 | }, | 
|---|
| 796 | {} | 
|---|
| 797 | }; | 
|---|
| 798 |  | 
|---|
| 799 | /* | 
|---|
| 800 | * Table taken from Bspec 49255 | 
|---|
| 801 | * Pipes do have some preferred DBuf slice affinity, | 
|---|
| 802 | * plus there are some hardcoded requirements on how | 
|---|
| 803 | * those should be distributed for multipipe scenarios. | 
|---|
| 804 | * For more DBuf slices algorithm can get even more messy | 
|---|
| 805 | * and less readable, so decided to use a table almost | 
|---|
| 806 | * as is from BSpec itself - that way it is at least easier | 
|---|
| 807 | * to compare, change and check. | 
|---|
| 808 | */ | 
|---|
| 809 | static const struct dbuf_slice_conf_entry tgl_allowed_dbufs[] = | 
|---|
| 810 | /* Autogenerated with igt/tools/intel_dbuf_map tool: */ | 
|---|
| 811 | { | 
|---|
| 812 | { | 
|---|
| 813 | .active_pipes = BIT(PIPE_A), | 
|---|
| 814 | .dbuf_mask = { | 
|---|
| 815 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 816 | }, | 
|---|
| 817 | }, | 
|---|
| 818 | { | 
|---|
| 819 | .active_pipes = BIT(PIPE_B), | 
|---|
| 820 | .dbuf_mask = { | 
|---|
| 821 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 822 | }, | 
|---|
| 823 | }, | 
|---|
| 824 | { | 
|---|
| 825 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), | 
|---|
| 826 | .dbuf_mask = { | 
|---|
| 827 | [PIPE_A] = BIT(DBUF_S2), | 
|---|
| 828 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 829 | }, | 
|---|
| 830 | }, | 
|---|
| 831 | { | 
|---|
| 832 | .active_pipes = BIT(PIPE_C), | 
|---|
| 833 | .dbuf_mask = { | 
|---|
| 834 | [PIPE_C] = BIT(DBUF_S2) | BIT(DBUF_S1), | 
|---|
| 835 | }, | 
|---|
| 836 | }, | 
|---|
| 837 | { | 
|---|
| 838 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), | 
|---|
| 839 | .dbuf_mask = { | 
|---|
| 840 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 841 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 842 | }, | 
|---|
| 843 | }, | 
|---|
| 844 | { | 
|---|
| 845 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 846 | .dbuf_mask = { | 
|---|
| 847 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 848 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 849 | }, | 
|---|
| 850 | }, | 
|---|
| 851 | { | 
|---|
| 852 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 853 | .dbuf_mask = { | 
|---|
| 854 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 855 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 856 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 857 | }, | 
|---|
| 858 | }, | 
|---|
| 859 | { | 
|---|
| 860 | .active_pipes = BIT(PIPE_D), | 
|---|
| 861 | .dbuf_mask = { | 
|---|
| 862 | [PIPE_D] = BIT(DBUF_S2) | BIT(DBUF_S1), | 
|---|
| 863 | }, | 
|---|
| 864 | }, | 
|---|
| 865 | { | 
|---|
| 866 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_D), | 
|---|
| 867 | .dbuf_mask = { | 
|---|
| 868 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 869 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 870 | }, | 
|---|
| 871 | }, | 
|---|
| 872 | { | 
|---|
| 873 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 874 | .dbuf_mask = { | 
|---|
| 875 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 876 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 877 | }, | 
|---|
| 878 | }, | 
|---|
| 879 | { | 
|---|
| 880 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 881 | .dbuf_mask = { | 
|---|
| 882 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 883 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 884 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 885 | }, | 
|---|
| 886 | }, | 
|---|
| 887 | { | 
|---|
| 888 | .active_pipes = BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 889 | .dbuf_mask = { | 
|---|
| 890 | [PIPE_C] = BIT(DBUF_S1), | 
|---|
| 891 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 892 | }, | 
|---|
| 893 | }, | 
|---|
| 894 | { | 
|---|
| 895 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 896 | .dbuf_mask = { | 
|---|
| 897 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 898 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 899 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 900 | }, | 
|---|
| 901 | }, | 
|---|
| 902 | { | 
|---|
| 903 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 904 | .dbuf_mask = { | 
|---|
| 905 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 906 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 907 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 908 | }, | 
|---|
| 909 | }, | 
|---|
| 910 | { | 
|---|
| 911 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 912 | .dbuf_mask = { | 
|---|
| 913 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 914 | [PIPE_B] = BIT(DBUF_S1), | 
|---|
| 915 | [PIPE_C] = BIT(DBUF_S2), | 
|---|
| 916 | [PIPE_D] = BIT(DBUF_S2), | 
|---|
| 917 | }, | 
|---|
| 918 | }, | 
|---|
| 919 | {} | 
|---|
| 920 | }; | 
|---|
| 921 |  | 
|---|
| 922 | static const struct dbuf_slice_conf_entry dg2_allowed_dbufs[] = { | 
|---|
| 923 | { | 
|---|
| 924 | .active_pipes = BIT(PIPE_A), | 
|---|
| 925 | .dbuf_mask = { | 
|---|
| 926 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 927 | }, | 
|---|
| 928 | }, | 
|---|
| 929 | { | 
|---|
| 930 | .active_pipes = BIT(PIPE_B), | 
|---|
| 931 | .dbuf_mask = { | 
|---|
| 932 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 933 | }, | 
|---|
| 934 | }, | 
|---|
| 935 | { | 
|---|
| 936 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), | 
|---|
| 937 | .dbuf_mask = { | 
|---|
| 938 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 939 | [PIPE_B] = BIT(DBUF_S2), | 
|---|
| 940 | }, | 
|---|
| 941 | }, | 
|---|
| 942 | { | 
|---|
| 943 | .active_pipes = BIT(PIPE_C), | 
|---|
| 944 | .dbuf_mask = { | 
|---|
| 945 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 946 | }, | 
|---|
| 947 | }, | 
|---|
| 948 | { | 
|---|
| 949 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), | 
|---|
| 950 | .dbuf_mask = { | 
|---|
| 951 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 952 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 953 | }, | 
|---|
| 954 | }, | 
|---|
| 955 | { | 
|---|
| 956 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 957 | .dbuf_mask = { | 
|---|
| 958 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 959 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 960 | }, | 
|---|
| 961 | }, | 
|---|
| 962 | { | 
|---|
| 963 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 964 | .dbuf_mask = { | 
|---|
| 965 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 966 | [PIPE_B] = BIT(DBUF_S2), | 
|---|
| 967 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 968 | }, | 
|---|
| 969 | }, | 
|---|
| 970 | { | 
|---|
| 971 | .active_pipes = BIT(PIPE_D), | 
|---|
| 972 | .dbuf_mask = { | 
|---|
| 973 | [PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 974 | }, | 
|---|
| 975 | }, | 
|---|
| 976 | { | 
|---|
| 977 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_D), | 
|---|
| 978 | .dbuf_mask = { | 
|---|
| 979 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 980 | [PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 981 | }, | 
|---|
| 982 | }, | 
|---|
| 983 | { | 
|---|
| 984 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 985 | .dbuf_mask = { | 
|---|
| 986 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 987 | [PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 988 | }, | 
|---|
| 989 | }, | 
|---|
| 990 | { | 
|---|
| 991 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 992 | .dbuf_mask = { | 
|---|
| 993 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 994 | [PIPE_B] = BIT(DBUF_S2), | 
|---|
| 995 | [PIPE_D] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 996 | }, | 
|---|
| 997 | }, | 
|---|
| 998 | { | 
|---|
| 999 | .active_pipes = BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1000 | .dbuf_mask = { | 
|---|
| 1001 | [PIPE_C] = BIT(DBUF_S3), | 
|---|
| 1002 | [PIPE_D] = BIT(DBUF_S4), | 
|---|
| 1003 | }, | 
|---|
| 1004 | }, | 
|---|
| 1005 | { | 
|---|
| 1006 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1007 | .dbuf_mask = { | 
|---|
| 1008 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1009 | [PIPE_C] = BIT(DBUF_S3), | 
|---|
| 1010 | [PIPE_D] = BIT(DBUF_S4), | 
|---|
| 1011 | }, | 
|---|
| 1012 | }, | 
|---|
| 1013 | { | 
|---|
| 1014 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1015 | .dbuf_mask = { | 
|---|
| 1016 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1017 | [PIPE_C] = BIT(DBUF_S3), | 
|---|
| 1018 | [PIPE_D] = BIT(DBUF_S4), | 
|---|
| 1019 | }, | 
|---|
| 1020 | }, | 
|---|
| 1021 | { | 
|---|
| 1022 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1023 | .dbuf_mask = { | 
|---|
| 1024 | [PIPE_A] = BIT(DBUF_S1), | 
|---|
| 1025 | [PIPE_B] = BIT(DBUF_S2), | 
|---|
| 1026 | [PIPE_C] = BIT(DBUF_S3), | 
|---|
| 1027 | [PIPE_D] = BIT(DBUF_S4), | 
|---|
| 1028 | }, | 
|---|
| 1029 | }, | 
|---|
| 1030 | {} | 
|---|
| 1031 | }; | 
|---|
| 1032 |  | 
|---|
| 1033 | static const struct dbuf_slice_conf_entry adlp_allowed_dbufs[] = { | 
|---|
| 1034 | /* | 
|---|
| 1035 | * Keep the join_mbus cases first so check_mbus_joined() | 
|---|
| 1036 | * will prefer them over the !join_mbus cases. | 
|---|
| 1037 | */ | 
|---|
| 1038 | { | 
|---|
| 1039 | .active_pipes = BIT(PIPE_A), | 
|---|
| 1040 | .dbuf_mask = { | 
|---|
| 1041 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1042 | }, | 
|---|
| 1043 | .join_mbus = true, | 
|---|
| 1044 | }, | 
|---|
| 1045 | { | 
|---|
| 1046 | .active_pipes = BIT(PIPE_B), | 
|---|
| 1047 | .dbuf_mask = { | 
|---|
| 1048 | [PIPE_B] = BIT(DBUF_S1) | BIT(DBUF_S2) | BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1049 | }, | 
|---|
| 1050 | .join_mbus = true, | 
|---|
| 1051 | }, | 
|---|
| 1052 | { | 
|---|
| 1053 | .active_pipes = BIT(PIPE_A), | 
|---|
| 1054 | .dbuf_mask = { | 
|---|
| 1055 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1056 | }, | 
|---|
| 1057 | .join_mbus = false, | 
|---|
| 1058 | }, | 
|---|
| 1059 | { | 
|---|
| 1060 | .active_pipes = BIT(PIPE_B), | 
|---|
| 1061 | .dbuf_mask = { | 
|---|
| 1062 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1063 | }, | 
|---|
| 1064 | .join_mbus = false, | 
|---|
| 1065 | }, | 
|---|
| 1066 | { | 
|---|
| 1067 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B), | 
|---|
| 1068 | .dbuf_mask = { | 
|---|
| 1069 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1070 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1071 | }, | 
|---|
| 1072 | }, | 
|---|
| 1073 | { | 
|---|
| 1074 | .active_pipes = BIT(PIPE_C), | 
|---|
| 1075 | .dbuf_mask = { | 
|---|
| 1076 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1077 | }, | 
|---|
| 1078 | }, | 
|---|
| 1079 | { | 
|---|
| 1080 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C), | 
|---|
| 1081 | .dbuf_mask = { | 
|---|
| 1082 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1083 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1084 | }, | 
|---|
| 1085 | }, | 
|---|
| 1086 | { | 
|---|
| 1087 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 1088 | .dbuf_mask = { | 
|---|
| 1089 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1090 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1091 | }, | 
|---|
| 1092 | }, | 
|---|
| 1093 | { | 
|---|
| 1094 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C), | 
|---|
| 1095 | .dbuf_mask = { | 
|---|
| 1096 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1097 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1098 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1099 | }, | 
|---|
| 1100 | }, | 
|---|
| 1101 | { | 
|---|
| 1102 | .active_pipes = BIT(PIPE_D), | 
|---|
| 1103 | .dbuf_mask = { | 
|---|
| 1104 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1105 | }, | 
|---|
| 1106 | }, | 
|---|
| 1107 | { | 
|---|
| 1108 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_D), | 
|---|
| 1109 | .dbuf_mask = { | 
|---|
| 1110 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1111 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1112 | }, | 
|---|
| 1113 | }, | 
|---|
| 1114 | { | 
|---|
| 1115 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 1116 | .dbuf_mask = { | 
|---|
| 1117 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1118 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1119 | }, | 
|---|
| 1120 | }, | 
|---|
| 1121 | { | 
|---|
| 1122 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_D), | 
|---|
| 1123 | .dbuf_mask = { | 
|---|
| 1124 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1125 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1126 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1127 | }, | 
|---|
| 1128 | }, | 
|---|
| 1129 | { | 
|---|
| 1130 | .active_pipes = BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1131 | .dbuf_mask = { | 
|---|
| 1132 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1133 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1134 | }, | 
|---|
| 1135 | }, | 
|---|
| 1136 | { | 
|---|
| 1137 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1138 | .dbuf_mask = { | 
|---|
| 1139 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1140 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1141 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1142 | }, | 
|---|
| 1143 | }, | 
|---|
| 1144 | { | 
|---|
| 1145 | .active_pipes = BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1146 | .dbuf_mask = { | 
|---|
| 1147 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1148 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1149 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1150 | }, | 
|---|
| 1151 | }, | 
|---|
| 1152 | { | 
|---|
| 1153 | .active_pipes = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) | BIT(PIPE_D), | 
|---|
| 1154 | .dbuf_mask = { | 
|---|
| 1155 | [PIPE_A] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1156 | [PIPE_B] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1157 | [PIPE_C] = BIT(DBUF_S3) | BIT(DBUF_S4), | 
|---|
| 1158 | [PIPE_D] = BIT(DBUF_S1) | BIT(DBUF_S2), | 
|---|
| 1159 | }, | 
|---|
| 1160 | }, | 
|---|
| 1161 | {} | 
|---|
| 1162 |  | 
|---|
| 1163 | }; | 
|---|
| 1164 |  | 
|---|
| 1165 | static bool check_mbus_joined(u8 active_pipes, | 
|---|
| 1166 | const struct dbuf_slice_conf_entry *dbuf_slices) | 
|---|
| 1167 | { | 
|---|
| 1168 | int i; | 
|---|
| 1169 |  | 
|---|
| 1170 | for (i = 0; dbuf_slices[i].active_pipes != 0; i++) { | 
|---|
| 1171 | if (dbuf_slices[i].active_pipes == active_pipes) | 
|---|
| 1172 | return dbuf_slices[i].join_mbus; | 
|---|
| 1173 | } | 
|---|
| 1174 | return false; | 
|---|
| 1175 | } | 
|---|
| 1176 |  | 
|---|
| 1177 | static bool adlp_check_mbus_joined(u8 active_pipes) | 
|---|
| 1178 | { | 
|---|
| 1179 | return check_mbus_joined(active_pipes, dbuf_slices: adlp_allowed_dbufs); | 
|---|
| 1180 | } | 
|---|
| 1181 |  | 
|---|
| 1182 | static u8 compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus, | 
|---|
| 1183 | const struct dbuf_slice_conf_entry *dbuf_slices) | 
|---|
| 1184 | { | 
|---|
| 1185 | int i; | 
|---|
| 1186 |  | 
|---|
| 1187 | for (i = 0; dbuf_slices[i].active_pipes != 0; i++) { | 
|---|
| 1188 | if (dbuf_slices[i].active_pipes == active_pipes && | 
|---|
| 1189 | dbuf_slices[i].join_mbus == join_mbus) | 
|---|
| 1190 | return dbuf_slices[i].dbuf_mask[pipe]; | 
|---|
| 1191 | } | 
|---|
| 1192 | return 0; | 
|---|
| 1193 | } | 
|---|
| 1194 |  | 
|---|
| 1195 | /* | 
|---|
| 1196 | * This function finds an entry with same enabled pipe configuration and | 
|---|
| 1197 | * returns correspondent DBuf slice mask as stated in BSpec for particular | 
|---|
| 1198 | * platform. | 
|---|
| 1199 | */ | 
|---|
| 1200 | static u8 icl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus) | 
|---|
| 1201 | { | 
|---|
| 1202 | /* | 
|---|
| 1203 | * FIXME: For ICL this is still a bit unclear as prev BSpec revision | 
|---|
| 1204 | * required calculating "pipe ratio" in order to determine | 
|---|
| 1205 | * if one or two slices can be used for single pipe configurations | 
|---|
| 1206 | * as additional constraint to the existing table. | 
|---|
| 1207 | * However based on recent info, it should be not "pipe ratio" | 
|---|
| 1208 | * but rather ratio between pixel_rate and cdclk with additional | 
|---|
| 1209 | * constants, so for now we are using only table until this is | 
|---|
| 1210 | * clarified. Also this is the reason why crtc_state param is | 
|---|
| 1211 | * still here - we will need it once those additional constraints | 
|---|
| 1212 | * pop up. | 
|---|
| 1213 | */ | 
|---|
| 1214 | return compute_dbuf_slices(pipe, active_pipes, join_mbus, | 
|---|
| 1215 | dbuf_slices: icl_allowed_dbufs); | 
|---|
| 1216 | } | 
|---|
| 1217 |  | 
|---|
| 1218 | static u8 tgl_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus) | 
|---|
| 1219 | { | 
|---|
| 1220 | return compute_dbuf_slices(pipe, active_pipes, join_mbus, | 
|---|
| 1221 | dbuf_slices: tgl_allowed_dbufs); | 
|---|
| 1222 | } | 
|---|
| 1223 |  | 
|---|
| 1224 | static u8 adlp_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus) | 
|---|
| 1225 | { | 
|---|
| 1226 | return compute_dbuf_slices(pipe, active_pipes, join_mbus, | 
|---|
| 1227 | dbuf_slices: adlp_allowed_dbufs); | 
|---|
| 1228 | } | 
|---|
| 1229 |  | 
|---|
| 1230 | static u8 dg2_compute_dbuf_slices(enum pipe pipe, u8 active_pipes, bool join_mbus) | 
|---|
| 1231 | { | 
|---|
| 1232 | return compute_dbuf_slices(pipe, active_pipes, join_mbus, | 
|---|
| 1233 | dbuf_slices: dg2_allowed_dbufs); | 
|---|
| 1234 | } | 
|---|
| 1235 |  | 
|---|
| 1236 | static u8 skl_compute_dbuf_slices(struct intel_crtc *crtc, u8 active_pipes, bool join_mbus) | 
|---|
| 1237 | { | 
|---|
| 1238 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 1239 | enum pipe pipe = crtc->pipe; | 
|---|
| 1240 |  | 
|---|
| 1241 | if (display->platform.dg2) | 
|---|
| 1242 | return dg2_compute_dbuf_slices(pipe, active_pipes, join_mbus); | 
|---|
| 1243 | else if (DISPLAY_VER(display) >= 13) | 
|---|
| 1244 | return adlp_compute_dbuf_slices(pipe, active_pipes, join_mbus); | 
|---|
| 1245 | else if (DISPLAY_VER(display) == 12) | 
|---|
| 1246 | return tgl_compute_dbuf_slices(pipe, active_pipes, join_mbus); | 
|---|
| 1247 | else if (DISPLAY_VER(display) == 11) | 
|---|
| 1248 | return icl_compute_dbuf_slices(pipe, active_pipes, join_mbus); | 
|---|
| 1249 | /* | 
|---|
| 1250 | * For anything else just return one slice yet. | 
|---|
| 1251 | * Should be extended for other platforms. | 
|---|
| 1252 | */ | 
|---|
| 1253 | return active_pipes & BIT(pipe) ? BIT(DBUF_S1) : 0; | 
|---|
| 1254 | } | 
|---|
| 1255 |  | 
|---|
| 1256 | static bool | 
|---|
| 1257 | use_minimal_wm0_only(const struct intel_crtc_state *crtc_state, | 
|---|
| 1258 | struct intel_plane *plane) | 
|---|
| 1259 | { | 
|---|
| 1260 | struct intel_display *display = to_intel_display(plane); | 
|---|
| 1261 |  | 
|---|
| 1262 | /* Xe3+ are auto minimum DDB capble. So don't force minimal wm0 */ | 
|---|
| 1263 | return IS_DISPLAY_VER(display, 13, 20) && | 
|---|
| 1264 | crtc_state->uapi.async_flip && | 
|---|
| 1265 | plane->async_flip; | 
|---|
| 1266 | } | 
|---|
| 1267 |  | 
|---|
| 1268 | unsigned int | 
|---|
| 1269 | skl_plane_relative_data_rate(const struct intel_crtc_state *crtc_state, | 
|---|
| 1270 | struct intel_plane *plane, int width, int height, | 
|---|
| 1271 | int cpp) | 
|---|
| 1272 | { | 
|---|
| 1273 | /* | 
|---|
| 1274 | * We calculate extra ddb based on ratio plane rate/total data rate | 
|---|
| 1275 | * in case, in some cases we should not allocate extra ddb for the plane, | 
|---|
| 1276 | * so do not count its data rate, if this is the case. | 
|---|
| 1277 | */ | 
|---|
| 1278 | if (use_minimal_wm0_only(crtc_state, plane)) | 
|---|
| 1279 | return 0; | 
|---|
| 1280 |  | 
|---|
| 1281 | return width * height * cpp; | 
|---|
| 1282 | } | 
|---|
| 1283 |  | 
|---|
| 1284 | static u64 | 
|---|
| 1285 | skl_total_relative_data_rate(const struct intel_crtc_state *crtc_state) | 
|---|
| 1286 | { | 
|---|
| 1287 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1288 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 1289 | enum plane_id plane_id; | 
|---|
| 1290 | u64 data_rate = 0; | 
|---|
| 1291 |  | 
|---|
| 1292 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 1293 | if (plane_id == PLANE_CURSOR) | 
|---|
| 1294 | continue; | 
|---|
| 1295 |  | 
|---|
| 1296 | data_rate += crtc_state->rel_data_rate[plane_id]; | 
|---|
| 1297 |  | 
|---|
| 1298 | if (DISPLAY_VER(display) < 11) | 
|---|
| 1299 | data_rate += crtc_state->rel_data_rate_y[plane_id]; | 
|---|
| 1300 | } | 
|---|
| 1301 |  | 
|---|
| 1302 | return data_rate; | 
|---|
| 1303 | } | 
|---|
| 1304 |  | 
|---|
| 1305 | const struct skl_wm_level * | 
|---|
| 1306 | skl_plane_wm_level(const struct skl_pipe_wm *pipe_wm, | 
|---|
| 1307 | enum plane_id plane_id, | 
|---|
| 1308 | int level) | 
|---|
| 1309 | { | 
|---|
| 1310 | const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; | 
|---|
| 1311 |  | 
|---|
| 1312 | if (level == 0 && pipe_wm->use_sagv_wm) | 
|---|
| 1313 | return &wm->sagv.wm0; | 
|---|
| 1314 |  | 
|---|
| 1315 | return &wm->wm[level]; | 
|---|
| 1316 | } | 
|---|
| 1317 |  | 
|---|
| 1318 | const struct skl_wm_level * | 
|---|
| 1319 | skl_plane_trans_wm(const struct skl_pipe_wm *pipe_wm, | 
|---|
| 1320 | enum plane_id plane_id) | 
|---|
| 1321 | { | 
|---|
| 1322 | const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id]; | 
|---|
| 1323 |  | 
|---|
| 1324 | if (pipe_wm->use_sagv_wm) | 
|---|
| 1325 | return &wm->sagv.trans_wm; | 
|---|
| 1326 |  | 
|---|
| 1327 | return &wm->trans_wm; | 
|---|
| 1328 | } | 
|---|
| 1329 |  | 
|---|
| 1330 | /* | 
|---|
| 1331 | * We only disable the watermarks for each plane if | 
|---|
| 1332 | * they exceed the ddb allocation of said plane. This | 
|---|
| 1333 | * is done so that we don't end up touching cursor | 
|---|
| 1334 | * watermarks needlessly when some other plane reduces | 
|---|
| 1335 | * our max possible watermark level. | 
|---|
| 1336 | * | 
|---|
| 1337 | * Bspec has this to say about the PLANE_WM enable bit: | 
|---|
| 1338 | * "All the watermarks at this level for all enabled | 
|---|
| 1339 | *  planes must be enabled before the level will be used." | 
|---|
| 1340 | * So this is actually safe to do. | 
|---|
| 1341 | */ | 
|---|
| 1342 | static void | 
|---|
| 1343 | skl_check_wm_level(struct skl_wm_level *wm, const struct skl_ddb_entry *ddb) | 
|---|
| 1344 | { | 
|---|
| 1345 | if (wm->min_ddb_alloc > skl_ddb_entry_size(entry: ddb)) | 
|---|
| 1346 | memset(s: wm, c: 0, n: sizeof(*wm)); | 
|---|
| 1347 | } | 
|---|
| 1348 |  | 
|---|
| 1349 | static void | 
|---|
| 1350 | skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm, | 
|---|
| 1351 | const struct skl_ddb_entry *ddb_y, const struct skl_ddb_entry *ddb) | 
|---|
| 1352 | { | 
|---|
| 1353 | if (wm->min_ddb_alloc > skl_ddb_entry_size(entry: ddb_y) || | 
|---|
| 1354 | uv_wm->min_ddb_alloc > skl_ddb_entry_size(entry: ddb)) { | 
|---|
| 1355 | memset(s: wm, c: 0, n: sizeof(*wm)); | 
|---|
| 1356 | memset(s: uv_wm, c: 0, n: sizeof(*uv_wm)); | 
|---|
| 1357 | } | 
|---|
| 1358 | } | 
|---|
| 1359 |  | 
|---|
| 1360 | static bool skl_need_wm_copy_wa(struct intel_display *display, int level, | 
|---|
| 1361 | const struct skl_plane_wm *wm) | 
|---|
| 1362 | { | 
|---|
| 1363 | /* | 
|---|
| 1364 | * Wa_1408961008:icl, ehl | 
|---|
| 1365 | * Wa_14012656716:tgl, adl | 
|---|
| 1366 | * Wa_14017887344:icl | 
|---|
| 1367 | * Wa_14017868169:adl, tgl | 
|---|
| 1368 | * Due to some power saving optimizations, different subsystems | 
|---|
| 1369 | * like PSR, might still use even disabled wm level registers, | 
|---|
| 1370 | * for "reference", so lets keep at least the values sane. | 
|---|
| 1371 | * Considering amount of WA requiring us to do similar things, was | 
|---|
| 1372 | * decided to simply do it for all of the platforms, as those wm | 
|---|
| 1373 | * levels are disabled, this isn't going to do harm anyway. | 
|---|
| 1374 | */ | 
|---|
| 1375 | return level > 0 && !wm->wm[level].enable; | 
|---|
| 1376 | } | 
|---|
| 1377 |  | 
|---|
| 1378 | struct skl_plane_ddb_iter { | 
|---|
| 1379 | u64 data_rate; | 
|---|
| 1380 | u16 start, size; | 
|---|
| 1381 | }; | 
|---|
| 1382 |  | 
|---|
| 1383 | static void | 
|---|
| 1384 | skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter, | 
|---|
| 1385 | struct skl_ddb_entry *ddb, | 
|---|
| 1386 | const struct skl_wm_level *wm, | 
|---|
| 1387 | u64 data_rate) | 
|---|
| 1388 | { | 
|---|
| 1389 | u16 size,  = 0; | 
|---|
| 1390 |  | 
|---|
| 1391 | if (data_rate && iter->data_rate) { | 
|---|
| 1392 | extra = min_t(u16, iter->size, | 
|---|
| 1393 | DIV64_U64_ROUND_UP(iter->size * data_rate, | 
|---|
| 1394 | iter->data_rate)); | 
|---|
| 1395 | iter->size -= extra; | 
|---|
| 1396 | iter->data_rate -= data_rate; | 
|---|
| 1397 | } | 
|---|
| 1398 |  | 
|---|
| 1399 | /* | 
|---|
| 1400 | * Keep ddb entry of all disabled planes explicitly zeroed | 
|---|
| 1401 | * to avoid skl_ddb_add_affected_planes() adding them to | 
|---|
| 1402 | * the state when other planes change their allocations. | 
|---|
| 1403 | */ | 
|---|
| 1404 | size = wm->min_ddb_alloc + extra; | 
|---|
| 1405 | if (size) | 
|---|
| 1406 | iter->start = skl_ddb_entry_init(entry: ddb, start: iter->start, | 
|---|
| 1407 | end: iter->start + size); | 
|---|
| 1408 | } | 
|---|
| 1409 |  | 
|---|
| 1410 | static int | 
|---|
| 1411 | skl_crtc_allocate_plane_ddb(struct intel_atomic_state *state, | 
|---|
| 1412 | struct intel_crtc *crtc) | 
|---|
| 1413 | { | 
|---|
| 1414 | struct intel_crtc_state *crtc_state = | 
|---|
| 1415 | intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 1416 | const struct intel_dbuf_state *dbuf_state = | 
|---|
| 1417 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 1418 | const struct skl_ddb_entry *alloc = &dbuf_state->ddb[crtc->pipe]; | 
|---|
| 1419 | struct intel_display *display = to_intel_display(state); | 
|---|
| 1420 | int num_active = hweight8(dbuf_state->active_pipes); | 
|---|
| 1421 | struct skl_plane_ddb_iter iter; | 
|---|
| 1422 | enum plane_id plane_id; | 
|---|
| 1423 | u16 cursor_size; | 
|---|
| 1424 | u32 blocks; | 
|---|
| 1425 | int level; | 
|---|
| 1426 |  | 
|---|
| 1427 | /* Clear the partitioning for disabled planes. */ | 
|---|
| 1428 | memset(s: crtc_state->wm.skl.plane_ddb, c: 0, n: sizeof(crtc_state->wm.skl.plane_ddb)); | 
|---|
| 1429 | memset(s: crtc_state->wm.skl.plane_ddb_y, c: 0, n: sizeof(crtc_state->wm.skl.plane_ddb_y)); | 
|---|
| 1430 | memset(s: crtc_state->wm.skl.plane_min_ddb, c: 0, | 
|---|
| 1431 | n: sizeof(crtc_state->wm.skl.plane_min_ddb)); | 
|---|
| 1432 | memset(s: crtc_state->wm.skl.plane_interim_ddb, c: 0, | 
|---|
| 1433 | n: sizeof(crtc_state->wm.skl.plane_interim_ddb)); | 
|---|
| 1434 |  | 
|---|
| 1435 | if (!crtc_state->hw.active) | 
|---|
| 1436 | return 0; | 
|---|
| 1437 |  | 
|---|
| 1438 | iter.start = alloc->start; | 
|---|
| 1439 | iter.size = skl_ddb_entry_size(entry: alloc); | 
|---|
| 1440 | if (iter.size == 0) | 
|---|
| 1441 | return 0; | 
|---|
| 1442 |  | 
|---|
| 1443 | /* Allocate fixed number of blocks for cursor. */ | 
|---|
| 1444 | cursor_size = skl_cursor_allocation(crtc_state, num_active); | 
|---|
| 1445 | iter.size -= cursor_size; | 
|---|
| 1446 | skl_ddb_entry_init(entry: &crtc_state->wm.skl.plane_ddb[PLANE_CURSOR], | 
|---|
| 1447 | start: alloc->end - cursor_size, end: alloc->end); | 
|---|
| 1448 |  | 
|---|
| 1449 | iter.data_rate = skl_total_relative_data_rate(crtc_state); | 
|---|
| 1450 |  | 
|---|
| 1451 | /* | 
|---|
| 1452 | * Find the highest watermark level for which we can satisfy the block | 
|---|
| 1453 | * requirement of active planes. | 
|---|
| 1454 | */ | 
|---|
| 1455 | for (level = display->wm.num_levels - 1; level >= 0; level--) { | 
|---|
| 1456 | blocks = 0; | 
|---|
| 1457 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 1458 | const struct skl_plane_wm *wm = | 
|---|
| 1459 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 1460 |  | 
|---|
| 1461 | if (plane_id == PLANE_CURSOR) { | 
|---|
| 1462 | const struct skl_ddb_entry *ddb = | 
|---|
| 1463 | &crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 1464 |  | 
|---|
| 1465 | if (wm->wm[level].min_ddb_alloc > skl_ddb_entry_size(entry: ddb)) { | 
|---|
| 1466 | drm_WARN_ON(display->drm, | 
|---|
| 1467 | wm->wm[level].min_ddb_alloc != U16_MAX); | 
|---|
| 1468 | blocks = U32_MAX; | 
|---|
| 1469 | break; | 
|---|
| 1470 | } | 
|---|
| 1471 | continue; | 
|---|
| 1472 | } | 
|---|
| 1473 |  | 
|---|
| 1474 | blocks += wm->wm[level].min_ddb_alloc; | 
|---|
| 1475 | blocks += wm->uv_wm[level].min_ddb_alloc; | 
|---|
| 1476 | } | 
|---|
| 1477 |  | 
|---|
| 1478 | if (blocks <= iter.size) { | 
|---|
| 1479 | iter.size -= blocks; | 
|---|
| 1480 | break; | 
|---|
| 1481 | } | 
|---|
| 1482 | } | 
|---|
| 1483 |  | 
|---|
| 1484 | if (level < 0) { | 
|---|
| 1485 | drm_dbg_kms(display->drm, | 
|---|
| 1486 | "Requested display configuration exceeds system DDB limitations"); | 
|---|
| 1487 | drm_dbg_kms(display->drm, "minimum required %d/%d\n", | 
|---|
| 1488 | blocks, iter.size); | 
|---|
| 1489 | return -EINVAL; | 
|---|
| 1490 | } | 
|---|
| 1491 |  | 
|---|
| 1492 | /* avoid the WARN later when we don't allocate any extra DDB */ | 
|---|
| 1493 | if (iter.data_rate == 0) | 
|---|
| 1494 | iter.size = 0; | 
|---|
| 1495 |  | 
|---|
| 1496 | /* | 
|---|
| 1497 | * Grant each plane the blocks it requires at the highest achievable | 
|---|
| 1498 | * watermark level, plus an extra share of the leftover blocks | 
|---|
| 1499 | * proportional to its relative data rate. | 
|---|
| 1500 | */ | 
|---|
| 1501 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 1502 | struct skl_ddb_entry *ddb = | 
|---|
| 1503 | &crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 1504 | struct skl_ddb_entry *ddb_y = | 
|---|
| 1505 | &crtc_state->wm.skl.plane_ddb_y[plane_id]; | 
|---|
| 1506 | u16 *min_ddb = &crtc_state->wm.skl.plane_min_ddb[plane_id]; | 
|---|
| 1507 | u16 *interim_ddb = | 
|---|
| 1508 | &crtc_state->wm.skl.plane_interim_ddb[plane_id]; | 
|---|
| 1509 | const struct skl_plane_wm *wm = | 
|---|
| 1510 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 1511 |  | 
|---|
| 1512 | if (plane_id == PLANE_CURSOR) | 
|---|
| 1513 | continue; | 
|---|
| 1514 |  | 
|---|
| 1515 | if (DISPLAY_VER(display) < 11 && | 
|---|
| 1516 | crtc_state->nv12_planes & BIT(plane_id)) { | 
|---|
| 1517 | skl_allocate_plane_ddb(iter: &iter, ddb: ddb_y, wm: &wm->wm[level], | 
|---|
| 1518 | data_rate: crtc_state->rel_data_rate_y[plane_id]); | 
|---|
| 1519 | skl_allocate_plane_ddb(iter: &iter, ddb, wm: &wm->uv_wm[level], | 
|---|
| 1520 | data_rate: crtc_state->rel_data_rate[plane_id]); | 
|---|
| 1521 | } else { | 
|---|
| 1522 | skl_allocate_plane_ddb(iter: &iter, ddb, wm: &wm->wm[level], | 
|---|
| 1523 | data_rate: crtc_state->rel_data_rate[plane_id]); | 
|---|
| 1524 | } | 
|---|
| 1525 |  | 
|---|
| 1526 | if (DISPLAY_VER(display) >= 30) { | 
|---|
| 1527 | *min_ddb = wm->wm[0].min_ddb_alloc; | 
|---|
| 1528 | *interim_ddb = wm->sagv.wm0.min_ddb_alloc; | 
|---|
| 1529 | } | 
|---|
| 1530 | } | 
|---|
| 1531 | drm_WARN_ON(display->drm, iter.size != 0 || iter.data_rate != 0); | 
|---|
| 1532 |  | 
|---|
| 1533 | /* | 
|---|
| 1534 | * When we calculated watermark values we didn't know how high | 
|---|
| 1535 | * of a level we'd actually be able to hit, so we just marked | 
|---|
| 1536 | * all levels as "enabled."  Go back now and disable the ones | 
|---|
| 1537 | * that aren't actually possible. | 
|---|
| 1538 | */ | 
|---|
| 1539 | for (level++; level < display->wm.num_levels; level++) { | 
|---|
| 1540 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 1541 | const struct skl_ddb_entry *ddb = | 
|---|
| 1542 | &crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 1543 | const struct skl_ddb_entry *ddb_y = | 
|---|
| 1544 | &crtc_state->wm.skl.plane_ddb_y[plane_id]; | 
|---|
| 1545 | struct skl_plane_wm *wm = | 
|---|
| 1546 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 1547 |  | 
|---|
| 1548 | if (DISPLAY_VER(display) < 11 && | 
|---|
| 1549 | crtc_state->nv12_planes & BIT(plane_id)) | 
|---|
| 1550 | skl_check_nv12_wm_level(wm: &wm->wm[level], | 
|---|
| 1551 | uv_wm: &wm->uv_wm[level], | 
|---|
| 1552 | ddb_y, ddb); | 
|---|
| 1553 | else | 
|---|
| 1554 | skl_check_wm_level(wm: &wm->wm[level], ddb); | 
|---|
| 1555 |  | 
|---|
| 1556 | if (skl_need_wm_copy_wa(display, level, wm)) { | 
|---|
| 1557 | wm->wm[level].blocks = wm->wm[level - 1].blocks; | 
|---|
| 1558 | wm->wm[level].lines = wm->wm[level - 1].lines; | 
|---|
| 1559 | wm->wm[level].ignore_lines = wm->wm[level - 1].ignore_lines; | 
|---|
| 1560 | } | 
|---|
| 1561 | } | 
|---|
| 1562 | } | 
|---|
| 1563 |  | 
|---|
| 1564 | /* | 
|---|
| 1565 | * Go back and disable the transition and SAGV watermarks | 
|---|
| 1566 | * if it turns out we don't have enough DDB blocks for them. | 
|---|
| 1567 | */ | 
|---|
| 1568 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 1569 | const struct skl_ddb_entry *ddb = | 
|---|
| 1570 | &crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 1571 | const struct skl_ddb_entry *ddb_y = | 
|---|
| 1572 | &crtc_state->wm.skl.plane_ddb_y[plane_id]; | 
|---|
| 1573 | u16 *interim_ddb = | 
|---|
| 1574 | &crtc_state->wm.skl.plane_interim_ddb[plane_id]; | 
|---|
| 1575 | struct skl_plane_wm *wm = | 
|---|
| 1576 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 1577 |  | 
|---|
| 1578 | if (DISPLAY_VER(display) < 11 && | 
|---|
| 1579 | crtc_state->nv12_planes & BIT(plane_id)) { | 
|---|
| 1580 | skl_check_wm_level(wm: &wm->trans_wm, ddb: ddb_y); | 
|---|
| 1581 | } else { | 
|---|
| 1582 | WARN_ON(skl_ddb_entry_size(ddb_y)); | 
|---|
| 1583 |  | 
|---|
| 1584 | skl_check_wm_level(wm: &wm->trans_wm, ddb); | 
|---|
| 1585 | } | 
|---|
| 1586 |  | 
|---|
| 1587 | skl_check_wm_level(wm: &wm->sagv.wm0, ddb); | 
|---|
| 1588 | if (DISPLAY_VER(display) >= 30) | 
|---|
| 1589 | *interim_ddb = wm->sagv.wm0.min_ddb_alloc; | 
|---|
| 1590 |  | 
|---|
| 1591 | skl_check_wm_level(wm: &wm->sagv.trans_wm, ddb); | 
|---|
| 1592 | } | 
|---|
| 1593 |  | 
|---|
| 1594 | return 0; | 
|---|
| 1595 | } | 
|---|
| 1596 |  | 
|---|
| 1597 | /* | 
|---|
| 1598 | * The max latency should be 257 (max the punit can code is 255 and we add 2us | 
|---|
| 1599 | * for the read latency) and cpp should always be <= 8, so that | 
|---|
| 1600 | * should allow pixel_rate up to ~2 GHz which seems sufficient since max | 
|---|
| 1601 | * 2xcdclk is 1350 MHz and the pixel rate should never exceed that. | 
|---|
| 1602 | */ | 
|---|
| 1603 | static uint_fixed_16_16_t | 
|---|
| 1604 | skl_wm_method1(struct intel_display *display, u32 pixel_rate, | 
|---|
| 1605 | u8 cpp, u32 latency, u32 dbuf_block_size) | 
|---|
| 1606 | { | 
|---|
| 1607 | u32 wm_intermediate_val; | 
|---|
| 1608 | uint_fixed_16_16_t ret; | 
|---|
| 1609 |  | 
|---|
| 1610 | if (latency == 0) | 
|---|
| 1611 | return FP_16_16_MAX; | 
|---|
| 1612 |  | 
|---|
| 1613 | wm_intermediate_val = latency * pixel_rate * cpp; | 
|---|
| 1614 | ret = div_fixed16(val: wm_intermediate_val, d: 1000 * dbuf_block_size); | 
|---|
| 1615 |  | 
|---|
| 1616 | if (DISPLAY_VER(display) >= 10) | 
|---|
| 1617 | ret = add_fixed16_u32(add1: ret, add2: 1); | 
|---|
| 1618 |  | 
|---|
| 1619 | return ret; | 
|---|
| 1620 | } | 
|---|
| 1621 |  | 
|---|
| 1622 | static uint_fixed_16_16_t | 
|---|
| 1623 | skl_wm_method2(u32 pixel_rate, u32 pipe_htotal, u32 latency, | 
|---|
| 1624 | uint_fixed_16_16_t plane_blocks_per_line) | 
|---|
| 1625 | { | 
|---|
| 1626 | u32 wm_intermediate_val; | 
|---|
| 1627 | uint_fixed_16_16_t ret; | 
|---|
| 1628 |  | 
|---|
| 1629 | if (latency == 0) | 
|---|
| 1630 | return FP_16_16_MAX; | 
|---|
| 1631 |  | 
|---|
| 1632 | wm_intermediate_val = latency * pixel_rate; | 
|---|
| 1633 | wm_intermediate_val = DIV_ROUND_UP(wm_intermediate_val, | 
|---|
| 1634 | pipe_htotal * 1000); | 
|---|
| 1635 | ret = mul_u32_fixed16(val: wm_intermediate_val, mul: plane_blocks_per_line); | 
|---|
| 1636 | return ret; | 
|---|
| 1637 | } | 
|---|
| 1638 |  | 
|---|
| 1639 | static uint_fixed_16_16_t | 
|---|
| 1640 | intel_get_linetime_us(const struct intel_crtc_state *crtc_state) | 
|---|
| 1641 | { | 
|---|
| 1642 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1643 | u32 pixel_rate; | 
|---|
| 1644 | u32 crtc_htotal; | 
|---|
| 1645 | uint_fixed_16_16_t linetime_us; | 
|---|
| 1646 |  | 
|---|
| 1647 | if (!crtc_state->hw.active) | 
|---|
| 1648 | return u32_to_fixed16(val: 0); | 
|---|
| 1649 |  | 
|---|
| 1650 | pixel_rate = crtc_state->pixel_rate; | 
|---|
| 1651 |  | 
|---|
| 1652 | if (drm_WARN_ON(display->drm, pixel_rate == 0)) | 
|---|
| 1653 | return u32_to_fixed16(val: 0); | 
|---|
| 1654 |  | 
|---|
| 1655 | crtc_htotal = crtc_state->hw.pipe_mode.crtc_htotal; | 
|---|
| 1656 | linetime_us = div_fixed16(val: crtc_htotal * 1000, d: pixel_rate); | 
|---|
| 1657 |  | 
|---|
| 1658 | return linetime_us; | 
|---|
| 1659 | } | 
|---|
| 1660 |  | 
|---|
| 1661 | static int | 
|---|
| 1662 | skl_compute_wm_params(const struct intel_crtc_state *crtc_state, | 
|---|
| 1663 | int width, const struct drm_format_info *format, | 
|---|
| 1664 | u64 modifier, unsigned int rotation, | 
|---|
| 1665 | u32 plane_pixel_rate, struct skl_wm_params *wp, | 
|---|
| 1666 | int color_plane, unsigned int pan_x) | 
|---|
| 1667 | { | 
|---|
| 1668 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1669 | u32 interm_pbpl; | 
|---|
| 1670 |  | 
|---|
| 1671 | /* only planar format has two planes */ | 
|---|
| 1672 | if (color_plane == 1 && | 
|---|
| 1673 | !intel_format_info_is_yuv_semiplanar(info: format, modifier)) { | 
|---|
| 1674 | drm_dbg_kms(display->drm, | 
|---|
| 1675 | "Non planar format have single plane\n"); | 
|---|
| 1676 | return -EINVAL; | 
|---|
| 1677 | } | 
|---|
| 1678 |  | 
|---|
| 1679 | wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED; | 
|---|
| 1680 | wp->y_tiled = modifier != I915_FORMAT_MOD_X_TILED && | 
|---|
| 1681 | intel_fb_is_tiled_modifier(modifier); | 
|---|
| 1682 | wp->rc_surface = intel_fb_is_ccs_modifier(modifier); | 
|---|
| 1683 | wp->is_planar = intel_format_info_is_yuv_semiplanar(info: format, modifier); | 
|---|
| 1684 |  | 
|---|
| 1685 | wp->width = width; | 
|---|
| 1686 | if (color_plane == 1 && wp->is_planar) | 
|---|
| 1687 | wp->width /= 2; | 
|---|
| 1688 |  | 
|---|
| 1689 | wp->cpp = format->cpp[color_plane]; | 
|---|
| 1690 | wp->plane_pixel_rate = plane_pixel_rate; | 
|---|
| 1691 |  | 
|---|
| 1692 | if (DISPLAY_VER(display) >= 11 && | 
|---|
| 1693 | modifier == I915_FORMAT_MOD_Yf_TILED  && wp->cpp == 1) | 
|---|
| 1694 | wp->dbuf_block_size = 256; | 
|---|
| 1695 | else | 
|---|
| 1696 | wp->dbuf_block_size = 512; | 
|---|
| 1697 |  | 
|---|
| 1698 | if (drm_rotation_90_or_270(rotation)) { | 
|---|
| 1699 | switch (wp->cpp) { | 
|---|
| 1700 | case 1: | 
|---|
| 1701 | wp->y_min_scanlines = 16; | 
|---|
| 1702 | break; | 
|---|
| 1703 | case 2: | 
|---|
| 1704 | wp->y_min_scanlines = 8; | 
|---|
| 1705 | break; | 
|---|
| 1706 | case 4: | 
|---|
| 1707 | wp->y_min_scanlines = 4; | 
|---|
| 1708 | break; | 
|---|
| 1709 | default: | 
|---|
| 1710 | MISSING_CASE(wp->cpp); | 
|---|
| 1711 | return -EINVAL; | 
|---|
| 1712 | } | 
|---|
| 1713 | } else { | 
|---|
| 1714 | wp->y_min_scanlines = 4; | 
|---|
| 1715 | } | 
|---|
| 1716 |  | 
|---|
| 1717 | if (skl_needs_memory_bw_wa(display)) | 
|---|
| 1718 | wp->y_min_scanlines *= 2; | 
|---|
| 1719 |  | 
|---|
| 1720 | wp->plane_bytes_per_line = wp->width * wp->cpp; | 
|---|
| 1721 | if (wp->y_tiled) { | 
|---|
| 1722 | interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line * | 
|---|
| 1723 | wp->y_min_scanlines, | 
|---|
| 1724 | wp->dbuf_block_size); | 
|---|
| 1725 |  | 
|---|
| 1726 | if (DISPLAY_VER(display) >= 30) | 
|---|
| 1727 | interm_pbpl += (pan_x != 0); | 
|---|
| 1728 | else if (DISPLAY_VER(display) >= 10) | 
|---|
| 1729 | interm_pbpl++; | 
|---|
| 1730 |  | 
|---|
| 1731 | wp->plane_blocks_per_line = div_fixed16(val: interm_pbpl, | 
|---|
| 1732 | d: wp->y_min_scanlines); | 
|---|
| 1733 | } else { | 
|---|
| 1734 | interm_pbpl = DIV_ROUND_UP(wp->plane_bytes_per_line, | 
|---|
| 1735 | wp->dbuf_block_size); | 
|---|
| 1736 |  | 
|---|
| 1737 | if (!wp->x_tiled || DISPLAY_VER(display) >= 10) | 
|---|
| 1738 | interm_pbpl++; | 
|---|
| 1739 |  | 
|---|
| 1740 | wp->plane_blocks_per_line = u32_to_fixed16(val: interm_pbpl); | 
|---|
| 1741 | } | 
|---|
| 1742 |  | 
|---|
| 1743 | wp->y_tile_minimum = mul_u32_fixed16(val: wp->y_min_scanlines, | 
|---|
| 1744 | mul: wp->plane_blocks_per_line); | 
|---|
| 1745 |  | 
|---|
| 1746 | wp->linetime_us = fixed16_to_u32_round_up(fp: intel_get_linetime_us(crtc_state)); | 
|---|
| 1747 |  | 
|---|
| 1748 | return 0; | 
|---|
| 1749 | } | 
|---|
| 1750 |  | 
|---|
| 1751 | static int | 
|---|
| 1752 | skl_compute_plane_wm_params(const struct intel_crtc_state *crtc_state, | 
|---|
| 1753 | const struct intel_plane_state *plane_state, | 
|---|
| 1754 | struct skl_wm_params *wp, int color_plane) | 
|---|
| 1755 | { | 
|---|
| 1756 | const struct drm_framebuffer *fb = plane_state->hw.fb; | 
|---|
| 1757 | int width; | 
|---|
| 1758 |  | 
|---|
| 1759 | /* | 
|---|
| 1760 | * Src coordinates are already rotated by 270 degrees for | 
|---|
| 1761 | * the 90/270 degree plane rotation cases (to match the | 
|---|
| 1762 | * GTT mapping), hence no need to account for rotation here. | 
|---|
| 1763 | */ | 
|---|
| 1764 | width = drm_rect_width(r: &plane_state->uapi.src) >> 16; | 
|---|
| 1765 |  | 
|---|
| 1766 | return skl_compute_wm_params(crtc_state, width, | 
|---|
| 1767 | format: fb->format, modifier: fb->modifier, | 
|---|
| 1768 | rotation: plane_state->hw.rotation, | 
|---|
| 1769 | plane_pixel_rate: intel_plane_pixel_rate(crtc_state, plane_state), | 
|---|
| 1770 | wp, color_plane, | 
|---|
| 1771 | pan_x: plane_state->uapi.src.x1); | 
|---|
| 1772 | } | 
|---|
| 1773 |  | 
|---|
| 1774 | static bool skl_wm_has_lines(struct intel_display *display, int level) | 
|---|
| 1775 | { | 
|---|
| 1776 | if (DISPLAY_VER(display) >= 10) | 
|---|
| 1777 | return true; | 
|---|
| 1778 |  | 
|---|
| 1779 | /* The number of lines are ignored for the level 0 watermark. */ | 
|---|
| 1780 | return level > 0; | 
|---|
| 1781 | } | 
|---|
| 1782 |  | 
|---|
| 1783 | static int skl_wm_max_lines(struct intel_display *display) | 
|---|
| 1784 | { | 
|---|
| 1785 | if (DISPLAY_VER(display) >= 13) | 
|---|
| 1786 | return 255; | 
|---|
| 1787 | else | 
|---|
| 1788 | return 31; | 
|---|
| 1789 | } | 
|---|
| 1790 |  | 
|---|
| 1791 | static bool xe3_auto_min_alloc_capable(struct intel_plane *plane, int level) | 
|---|
| 1792 | { | 
|---|
| 1793 | struct intel_display *display = to_intel_display(plane); | 
|---|
| 1794 |  | 
|---|
| 1795 | return DISPLAY_VER(display) >= 30 && level == 0 && plane->id != PLANE_CURSOR; | 
|---|
| 1796 | } | 
|---|
| 1797 |  | 
|---|
| 1798 | static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state, | 
|---|
| 1799 | struct intel_plane *plane, | 
|---|
| 1800 | int level, | 
|---|
| 1801 | unsigned int latency, | 
|---|
| 1802 | const struct skl_wm_params *wp, | 
|---|
| 1803 | const struct skl_wm_level *result_prev, | 
|---|
| 1804 | struct skl_wm_level *result /* out */) | 
|---|
| 1805 | { | 
|---|
| 1806 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1807 | uint_fixed_16_16_t method1, method2; | 
|---|
| 1808 | uint_fixed_16_16_t selected_result; | 
|---|
| 1809 | u32 blocks, lines, min_ddb_alloc = 0; | 
|---|
| 1810 |  | 
|---|
| 1811 | if (latency == 0 || | 
|---|
| 1812 | (use_minimal_wm0_only(crtc_state, plane) && level > 0)) { | 
|---|
| 1813 | /* reject it */ | 
|---|
| 1814 | result->min_ddb_alloc = U16_MAX; | 
|---|
| 1815 | return; | 
|---|
| 1816 | } | 
|---|
| 1817 |  | 
|---|
| 1818 | method1 = skl_wm_method1(display, pixel_rate: wp->plane_pixel_rate, | 
|---|
| 1819 | cpp: wp->cpp, latency, dbuf_block_size: wp->dbuf_block_size); | 
|---|
| 1820 | method2 = skl_wm_method2(pixel_rate: wp->plane_pixel_rate, | 
|---|
| 1821 | pipe_htotal: crtc_state->hw.pipe_mode.crtc_htotal, | 
|---|
| 1822 | latency, | 
|---|
| 1823 | plane_blocks_per_line: wp->plane_blocks_per_line); | 
|---|
| 1824 |  | 
|---|
| 1825 | if (wp->y_tiled) { | 
|---|
| 1826 | selected_result = max_fixed16(max1: method2, max2: wp->y_tile_minimum); | 
|---|
| 1827 | } else { | 
|---|
| 1828 | if ((wp->cpp * crtc_state->hw.pipe_mode.crtc_htotal / | 
|---|
| 1829 | wp->dbuf_block_size < 1) && | 
|---|
| 1830 | (wp->plane_bytes_per_line / wp->dbuf_block_size < 1)) { | 
|---|
| 1831 | selected_result = method2; | 
|---|
| 1832 | } else if (latency >= wp->linetime_us) { | 
|---|
| 1833 | if (DISPLAY_VER(display) == 9) | 
|---|
| 1834 | selected_result = min_fixed16(min1: method1, min2: method2); | 
|---|
| 1835 | else | 
|---|
| 1836 | selected_result = method2; | 
|---|
| 1837 | } else { | 
|---|
| 1838 | selected_result = method1; | 
|---|
| 1839 | } | 
|---|
| 1840 | } | 
|---|
| 1841 |  | 
|---|
| 1842 | blocks = fixed16_to_u32_round_up(fp: selected_result); | 
|---|
| 1843 | if (DISPLAY_VER(display) < 30) | 
|---|
| 1844 | blocks++; | 
|---|
| 1845 |  | 
|---|
| 1846 | /* | 
|---|
| 1847 | * Lets have blocks at minimum equivalent to plane_blocks_per_line | 
|---|
| 1848 | * as there will be at minimum one line for lines configuration. This | 
|---|
| 1849 | * is a work around for FIFO underruns observed with resolutions like | 
|---|
| 1850 | * 4k 60 Hz in single channel DRAM configurations. | 
|---|
| 1851 | * | 
|---|
| 1852 | * As per the Bspec 49325, if the ddb allocation can hold at least | 
|---|
| 1853 | * one plane_blocks_per_line, we should have selected method2 in | 
|---|
| 1854 | * the above logic. Assuming that modern versions have enough dbuf | 
|---|
| 1855 | * and method2 guarantees blocks equivalent to at least 1 line, | 
|---|
| 1856 | * select the blocks as plane_blocks_per_line. | 
|---|
| 1857 | * | 
|---|
| 1858 | * TODO: Revisit the logic when we have better understanding on DRAM | 
|---|
| 1859 | * channels' impact on the level 0 memory latency and the relevant | 
|---|
| 1860 | * wm calculations. | 
|---|
| 1861 | */ | 
|---|
| 1862 | if (skl_wm_has_lines(display, level)) | 
|---|
| 1863 | blocks = max(blocks, | 
|---|
| 1864 | fixed16_to_u32_round_up(wp->plane_blocks_per_line)); | 
|---|
| 1865 | lines = div_round_up_fixed16(val: selected_result, | 
|---|
| 1866 | d: wp->plane_blocks_per_line); | 
|---|
| 1867 |  | 
|---|
| 1868 | if (DISPLAY_VER(display) == 9) { | 
|---|
| 1869 | /* Display WA #1125: skl,bxt,kbl */ | 
|---|
| 1870 | if (level == 0 && wp->rc_surface) | 
|---|
| 1871 | blocks += fixed16_to_u32_round_up(fp: wp->y_tile_minimum); | 
|---|
| 1872 |  | 
|---|
| 1873 | /* Display WA #1126: skl,bxt,kbl */ | 
|---|
| 1874 | if (level >= 1 && level <= 7) { | 
|---|
| 1875 | if (wp->y_tiled) { | 
|---|
| 1876 | blocks += fixed16_to_u32_round_up(fp: wp->y_tile_minimum); | 
|---|
| 1877 | lines += wp->y_min_scanlines; | 
|---|
| 1878 | } else { | 
|---|
| 1879 | blocks++; | 
|---|
| 1880 | } | 
|---|
| 1881 |  | 
|---|
| 1882 | /* | 
|---|
| 1883 | * Make sure result blocks for higher latency levels are | 
|---|
| 1884 | * at least as high as level below the current level. | 
|---|
| 1885 | * Assumption in DDB algorithm optimization for special | 
|---|
| 1886 | * cases. Also covers Display WA #1125 for RC. | 
|---|
| 1887 | */ | 
|---|
| 1888 | if (result_prev->blocks > blocks) | 
|---|
| 1889 | blocks = result_prev->blocks; | 
|---|
| 1890 | } | 
|---|
| 1891 | } | 
|---|
| 1892 |  | 
|---|
| 1893 | if (DISPLAY_VER(display) >= 11) { | 
|---|
| 1894 | if (wp->y_tiled) { | 
|---|
| 1895 | int ; | 
|---|
| 1896 |  | 
|---|
| 1897 | if (lines % wp->y_min_scanlines == 0) | 
|---|
| 1898 | extra_lines = wp->y_min_scanlines; | 
|---|
| 1899 | else | 
|---|
| 1900 | extra_lines = wp->y_min_scanlines * 2 - | 
|---|
| 1901 | lines % wp->y_min_scanlines; | 
|---|
| 1902 |  | 
|---|
| 1903 | min_ddb_alloc = mul_round_up_u32_fixed16(val: lines + extra_lines, | 
|---|
| 1904 | mul: wp->plane_blocks_per_line); | 
|---|
| 1905 | } else { | 
|---|
| 1906 | min_ddb_alloc = blocks + DIV_ROUND_UP(blocks, 10); | 
|---|
| 1907 | } | 
|---|
| 1908 | } | 
|---|
| 1909 |  | 
|---|
| 1910 | if (!skl_wm_has_lines(display, level)) | 
|---|
| 1911 | lines = 0; | 
|---|
| 1912 |  | 
|---|
| 1913 | if (lines > skl_wm_max_lines(display)) { | 
|---|
| 1914 | /* reject it */ | 
|---|
| 1915 | result->min_ddb_alloc = U16_MAX; | 
|---|
| 1916 | return; | 
|---|
| 1917 | } | 
|---|
| 1918 |  | 
|---|
| 1919 | /* | 
|---|
| 1920 | * If lines is valid, assume we can use this watermark level | 
|---|
| 1921 | * for now.  We'll come back and disable it after we calculate the | 
|---|
| 1922 | * DDB allocation if it turns out we don't actually have enough | 
|---|
| 1923 | * blocks to satisfy it. | 
|---|
| 1924 | */ | 
|---|
| 1925 | result->blocks = blocks; | 
|---|
| 1926 | result->lines = lines; | 
|---|
| 1927 | /* Bspec says: value >= plane ddb allocation -> invalid, hence the +1 here */ | 
|---|
| 1928 | result->min_ddb_alloc = max(min_ddb_alloc, blocks) + 1; | 
|---|
| 1929 | result->enable = true; | 
|---|
| 1930 | result->auto_min_alloc_wm_enable = xe3_auto_min_alloc_capable(plane, level); | 
|---|
| 1931 |  | 
|---|
| 1932 | if (DISPLAY_VER(display) < 12 && display->sagv.block_time_us) | 
|---|
| 1933 | result->can_sagv = latency >= display->sagv.block_time_us; | 
|---|
| 1934 | } | 
|---|
| 1935 |  | 
|---|
| 1936 | static void | 
|---|
| 1937 | skl_compute_wm_levels(const struct intel_crtc_state *crtc_state, | 
|---|
| 1938 | struct intel_plane *plane, | 
|---|
| 1939 | const struct skl_wm_params *wm_params, | 
|---|
| 1940 | struct skl_wm_level *levels) | 
|---|
| 1941 | { | 
|---|
| 1942 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1943 | struct skl_wm_level *result_prev = &levels[0]; | 
|---|
| 1944 | int level; | 
|---|
| 1945 |  | 
|---|
| 1946 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 1947 | struct skl_wm_level *result = &levels[level]; | 
|---|
| 1948 | unsigned int latency = skl_wm_latency(display, level, wp: wm_params); | 
|---|
| 1949 |  | 
|---|
| 1950 | skl_compute_plane_wm(crtc_state, plane, level, latency, | 
|---|
| 1951 | wp: wm_params, result_prev, result); | 
|---|
| 1952 |  | 
|---|
| 1953 | result_prev = result; | 
|---|
| 1954 | } | 
|---|
| 1955 | } | 
|---|
| 1956 |  | 
|---|
| 1957 | static void tgl_compute_sagv_wm(const struct intel_crtc_state *crtc_state, | 
|---|
| 1958 | struct intel_plane *plane, | 
|---|
| 1959 | const struct skl_wm_params *wm_params, | 
|---|
| 1960 | struct skl_plane_wm *plane_wm) | 
|---|
| 1961 | { | 
|---|
| 1962 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 1963 | struct skl_wm_level *sagv_wm = &plane_wm->sagv.wm0; | 
|---|
| 1964 | struct skl_wm_level *levels = plane_wm->wm; | 
|---|
| 1965 | unsigned int latency = 0; | 
|---|
| 1966 |  | 
|---|
| 1967 | if (display->sagv.block_time_us) | 
|---|
| 1968 | latency = display->sagv.block_time_us + | 
|---|
| 1969 | skl_wm_latency(display, level: 0, wp: wm_params); | 
|---|
| 1970 |  | 
|---|
| 1971 | skl_compute_plane_wm(crtc_state, plane, level: 0, latency, | 
|---|
| 1972 | wp: wm_params, result_prev: &levels[0], | 
|---|
| 1973 | result: sagv_wm); | 
|---|
| 1974 | } | 
|---|
| 1975 |  | 
|---|
| 1976 | static void skl_compute_transition_wm(struct intel_display *display, | 
|---|
| 1977 | struct skl_wm_level *trans_wm, | 
|---|
| 1978 | const struct skl_wm_level *wm0, | 
|---|
| 1979 | const struct skl_wm_params *wp) | 
|---|
| 1980 | { | 
|---|
| 1981 | u16 trans_min, trans_amount, trans_y_tile_min; | 
|---|
| 1982 | u16 wm0_blocks, trans_offset, blocks; | 
|---|
| 1983 |  | 
|---|
| 1984 | /* Transition WM don't make any sense if ipc is disabled */ | 
|---|
| 1985 | if (!skl_watermark_ipc_enabled(display)) | 
|---|
| 1986 | return; | 
|---|
| 1987 |  | 
|---|
| 1988 | /* | 
|---|
| 1989 | * WaDisableTWM:skl,kbl,cfl,bxt | 
|---|
| 1990 | * Transition WM are not recommended by HW team for GEN9 | 
|---|
| 1991 | */ | 
|---|
| 1992 | if (DISPLAY_VER(display) == 9) | 
|---|
| 1993 | return; | 
|---|
| 1994 |  | 
|---|
| 1995 | if (DISPLAY_VER(display) >= 11) | 
|---|
| 1996 | trans_min = 4; | 
|---|
| 1997 | else | 
|---|
| 1998 | trans_min = 14; | 
|---|
| 1999 |  | 
|---|
| 2000 | /* Display WA #1140: glk,cnl */ | 
|---|
| 2001 | if (DISPLAY_VER(display) == 10) | 
|---|
| 2002 | trans_amount = 0; | 
|---|
| 2003 | else | 
|---|
| 2004 | trans_amount = 10; /* This is configurable amount */ | 
|---|
| 2005 |  | 
|---|
| 2006 | trans_offset = trans_min + trans_amount; | 
|---|
| 2007 |  | 
|---|
| 2008 | /* | 
|---|
| 2009 | * The spec asks for Selected Result Blocks for wm0 (the real value), | 
|---|
| 2010 | * not Result Blocks (the integer value). Pay attention to the capital | 
|---|
| 2011 | * letters. The value wm_l0->blocks is actually Result Blocks, but | 
|---|
| 2012 | * since Result Blocks is the ceiling of Selected Result Blocks plus 1, | 
|---|
| 2013 | * and since we later will have to get the ceiling of the sum in the | 
|---|
| 2014 | * transition watermarks calculation, we can just pretend Selected | 
|---|
| 2015 | * Result Blocks is Result Blocks minus 1 and it should work for the | 
|---|
| 2016 | * current platforms. | 
|---|
| 2017 | */ | 
|---|
| 2018 | wm0_blocks = wm0->blocks - 1; | 
|---|
| 2019 |  | 
|---|
| 2020 | if (wp->y_tiled) { | 
|---|
| 2021 | trans_y_tile_min = | 
|---|
| 2022 | (u16)mul_round_up_u32_fixed16(val: 2, mul: wp->y_tile_minimum); | 
|---|
| 2023 | blocks = max(wm0_blocks, trans_y_tile_min) + trans_offset; | 
|---|
| 2024 | } else { | 
|---|
| 2025 | blocks = wm0_blocks + trans_offset; | 
|---|
| 2026 | } | 
|---|
| 2027 | blocks++; | 
|---|
| 2028 |  | 
|---|
| 2029 | /* | 
|---|
| 2030 | * Just assume we can enable the transition watermark.  After | 
|---|
| 2031 | * computing the DDB we'll come back and disable it if that | 
|---|
| 2032 | * assumption turns out to be false. | 
|---|
| 2033 | */ | 
|---|
| 2034 | trans_wm->blocks = blocks; | 
|---|
| 2035 | trans_wm->min_ddb_alloc = max_t(u16, wm0->min_ddb_alloc, blocks + 1); | 
|---|
| 2036 | trans_wm->enable = true; | 
|---|
| 2037 | } | 
|---|
| 2038 |  | 
|---|
| 2039 | static int skl_build_plane_wm_single(struct intel_crtc_state *crtc_state, | 
|---|
| 2040 | const struct intel_plane_state *plane_state, | 
|---|
| 2041 | struct intel_plane *plane, int color_plane) | 
|---|
| 2042 | { | 
|---|
| 2043 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 2044 | struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id]; | 
|---|
| 2045 | struct skl_wm_params wm_params; | 
|---|
| 2046 | int ret; | 
|---|
| 2047 |  | 
|---|
| 2048 | ret = skl_compute_plane_wm_params(crtc_state, plane_state, | 
|---|
| 2049 | wp: &wm_params, color_plane); | 
|---|
| 2050 | if (ret) | 
|---|
| 2051 | return ret; | 
|---|
| 2052 |  | 
|---|
| 2053 | skl_compute_wm_levels(crtc_state, plane, wm_params: &wm_params, levels: wm->wm); | 
|---|
| 2054 |  | 
|---|
| 2055 | skl_compute_transition_wm(display, trans_wm: &wm->trans_wm, | 
|---|
| 2056 | wm0: &wm->wm[0], wp: &wm_params); | 
|---|
| 2057 |  | 
|---|
| 2058 | if (DISPLAY_VER(display) >= 12) { | 
|---|
| 2059 | tgl_compute_sagv_wm(crtc_state, plane, wm_params: &wm_params, plane_wm: wm); | 
|---|
| 2060 |  | 
|---|
| 2061 | skl_compute_transition_wm(display, trans_wm: &wm->sagv.trans_wm, | 
|---|
| 2062 | wm0: &wm->sagv.wm0, wp: &wm_params); | 
|---|
| 2063 | } | 
|---|
| 2064 |  | 
|---|
| 2065 | return 0; | 
|---|
| 2066 | } | 
|---|
| 2067 |  | 
|---|
| 2068 | static int skl_build_plane_wm_uv(struct intel_crtc_state *crtc_state, | 
|---|
| 2069 | const struct intel_plane_state *plane_state, | 
|---|
| 2070 | struct intel_plane *plane) | 
|---|
| 2071 | { | 
|---|
| 2072 | struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane->id]; | 
|---|
| 2073 | struct skl_wm_params wm_params; | 
|---|
| 2074 | int ret; | 
|---|
| 2075 |  | 
|---|
| 2076 | wm->is_planar = true; | 
|---|
| 2077 |  | 
|---|
| 2078 | /* uv plane watermarks must also be validated for NV12/Planar */ | 
|---|
| 2079 | ret = skl_compute_plane_wm_params(crtc_state, plane_state, | 
|---|
| 2080 | wp: &wm_params, color_plane: 1); | 
|---|
| 2081 | if (ret) | 
|---|
| 2082 | return ret; | 
|---|
| 2083 |  | 
|---|
| 2084 | skl_compute_wm_levels(crtc_state, plane, wm_params: &wm_params, levels: wm->uv_wm); | 
|---|
| 2085 |  | 
|---|
| 2086 | return 0; | 
|---|
| 2087 | } | 
|---|
| 2088 |  | 
|---|
| 2089 | static int skl_build_plane_wm(struct intel_crtc_state *crtc_state, | 
|---|
| 2090 | const struct intel_plane_state *plane_state) | 
|---|
| 2091 | { | 
|---|
| 2092 | struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); | 
|---|
| 2093 | enum plane_id plane_id = plane->id; | 
|---|
| 2094 | struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; | 
|---|
| 2095 | const struct drm_framebuffer *fb = plane_state->hw.fb; | 
|---|
| 2096 | int ret; | 
|---|
| 2097 |  | 
|---|
| 2098 | memset(s: wm, c: 0, n: sizeof(*wm)); | 
|---|
| 2099 |  | 
|---|
| 2100 | if (!intel_wm_plane_visible(crtc_state, plane_state)) | 
|---|
| 2101 | return 0; | 
|---|
| 2102 |  | 
|---|
| 2103 | ret = skl_build_plane_wm_single(crtc_state, plane_state, | 
|---|
| 2104 | plane, color_plane: 0); | 
|---|
| 2105 | if (ret) | 
|---|
| 2106 | return ret; | 
|---|
| 2107 |  | 
|---|
| 2108 | if (fb->format->is_yuv && fb->format->num_planes > 1) { | 
|---|
| 2109 | ret = skl_build_plane_wm_uv(crtc_state, plane_state, | 
|---|
| 2110 | plane); | 
|---|
| 2111 | if (ret) | 
|---|
| 2112 | return ret; | 
|---|
| 2113 | } | 
|---|
| 2114 |  | 
|---|
| 2115 | return 0; | 
|---|
| 2116 | } | 
|---|
| 2117 |  | 
|---|
| 2118 | static int icl_build_plane_wm(struct intel_crtc_state *crtc_state, | 
|---|
| 2119 | const struct intel_plane_state *plane_state) | 
|---|
| 2120 | { | 
|---|
| 2121 | struct intel_display *display = to_intel_display(plane_state); | 
|---|
| 2122 | struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); | 
|---|
| 2123 | enum plane_id plane_id = plane->id; | 
|---|
| 2124 | struct skl_plane_wm *wm = &crtc_state->wm.skl.raw.planes[plane_id]; | 
|---|
| 2125 | int ret; | 
|---|
| 2126 |  | 
|---|
| 2127 | /* Watermarks calculated on UV plane */ | 
|---|
| 2128 | if (plane_state->is_y_plane) | 
|---|
| 2129 | return 0; | 
|---|
| 2130 |  | 
|---|
| 2131 | memset(s: wm, c: 0, n: sizeof(*wm)); | 
|---|
| 2132 |  | 
|---|
| 2133 | if (plane_state->planar_linked_plane) { | 
|---|
| 2134 | const struct drm_framebuffer *fb = plane_state->hw.fb; | 
|---|
| 2135 |  | 
|---|
| 2136 | drm_WARN_ON(display->drm, | 
|---|
| 2137 | !intel_wm_plane_visible(crtc_state, plane_state)); | 
|---|
| 2138 | drm_WARN_ON(display->drm, !fb->format->is_yuv || | 
|---|
| 2139 | fb->format->num_planes == 1); | 
|---|
| 2140 |  | 
|---|
| 2141 | ret = skl_build_plane_wm_single(crtc_state, plane_state, | 
|---|
| 2142 | plane: plane_state->planar_linked_plane, color_plane: 0); | 
|---|
| 2143 | if (ret) | 
|---|
| 2144 | return ret; | 
|---|
| 2145 |  | 
|---|
| 2146 | ret = skl_build_plane_wm_single(crtc_state, plane_state, | 
|---|
| 2147 | plane, color_plane: 1); | 
|---|
| 2148 | if (ret) | 
|---|
| 2149 | return ret; | 
|---|
| 2150 | } else if (intel_wm_plane_visible(crtc_state, plane_state)) { | 
|---|
| 2151 | ret = skl_build_plane_wm_single(crtc_state, plane_state, | 
|---|
| 2152 | plane, color_plane: 0); | 
|---|
| 2153 | if (ret) | 
|---|
| 2154 | return ret; | 
|---|
| 2155 | } | 
|---|
| 2156 |  | 
|---|
| 2157 | return 0; | 
|---|
| 2158 | } | 
|---|
| 2159 |  | 
|---|
| 2160 | static int | 
|---|
| 2161 | cdclk_prefill_adjustment(const struct intel_crtc_state *crtc_state) | 
|---|
| 2162 | { | 
|---|
| 2163 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 2164 | struct intel_atomic_state *state = | 
|---|
| 2165 | to_intel_atomic_state(crtc_state->uapi.state); | 
|---|
| 2166 | const struct intel_cdclk_state *cdclk_state; | 
|---|
| 2167 |  | 
|---|
| 2168 | cdclk_state = intel_atomic_get_cdclk_state(state); | 
|---|
| 2169 | if (IS_ERR(ptr: cdclk_state)) { | 
|---|
| 2170 | drm_WARN_ON(display->drm, PTR_ERR(cdclk_state)); | 
|---|
| 2171 | return 1; | 
|---|
| 2172 | } | 
|---|
| 2173 |  | 
|---|
| 2174 | return min(1, DIV_ROUND_UP(crtc_state->pixel_rate, | 
|---|
| 2175 | 2 * intel_cdclk_logical(cdclk_state))); | 
|---|
| 2176 | } | 
|---|
| 2177 |  | 
|---|
| 2178 | static int | 
|---|
| 2179 | dsc_prefill_latency(const struct intel_crtc_state *crtc_state) | 
|---|
| 2180 | { | 
|---|
| 2181 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 2182 | const struct intel_crtc_scaler_state *scaler_state = | 
|---|
| 2183 | &crtc_state->scaler_state; | 
|---|
| 2184 | int linetime = DIV_ROUND_UP(1000 * crtc_state->hw.adjusted_mode.htotal, | 
|---|
| 2185 | crtc_state->hw.adjusted_mode.clock); | 
|---|
| 2186 | int num_scaler_users = hweight32(scaler_state->scaler_users); | 
|---|
| 2187 | int chroma_downscaling_factor = | 
|---|
| 2188 | crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ? 2 : 1; | 
|---|
| 2189 | u32 dsc_prefill_latency = 0; | 
|---|
| 2190 |  | 
|---|
| 2191 | if (!crtc_state->dsc.compression_enable || | 
|---|
| 2192 | !num_scaler_users || | 
|---|
| 2193 | num_scaler_users > crtc->num_scalers) | 
|---|
| 2194 | return dsc_prefill_latency; | 
|---|
| 2195 |  | 
|---|
| 2196 | dsc_prefill_latency = DIV_ROUND_UP(15 * linetime * chroma_downscaling_factor, 10); | 
|---|
| 2197 |  | 
|---|
| 2198 | for (int i = 0; i < num_scaler_users; i++) { | 
|---|
| 2199 | u64 hscale_k, vscale_k; | 
|---|
| 2200 |  | 
|---|
| 2201 | hscale_k = max(1000, mul_u32_u32(scaler_state->scalers[i].hscale, 1000) >> 16); | 
|---|
| 2202 | vscale_k = max(1000, mul_u32_u32(scaler_state->scalers[i].vscale, 1000) >> 16); | 
|---|
| 2203 | dsc_prefill_latency = DIV_ROUND_UP_ULL(dsc_prefill_latency * hscale_k * vscale_k, | 
|---|
| 2204 | 1000000); | 
|---|
| 2205 | } | 
|---|
| 2206 |  | 
|---|
| 2207 | dsc_prefill_latency *= cdclk_prefill_adjustment(crtc_state); | 
|---|
| 2208 |  | 
|---|
| 2209 | return intel_usecs_to_scanlines(adjusted_mode: &crtc_state->hw.adjusted_mode, usecs: dsc_prefill_latency); | 
|---|
| 2210 | } | 
|---|
| 2211 |  | 
|---|
| 2212 | static int | 
|---|
| 2213 | scaler_prefill_latency(const struct intel_crtc_state *crtc_state) | 
|---|
| 2214 | { | 
|---|
| 2215 | const struct intel_crtc_scaler_state *scaler_state = | 
|---|
| 2216 | &crtc_state->scaler_state; | 
|---|
| 2217 | int num_scaler_users = hweight32(scaler_state->scaler_users); | 
|---|
| 2218 | int scaler_prefill_latency = 0; | 
|---|
| 2219 | int linetime = DIV_ROUND_UP(1000 * crtc_state->hw.adjusted_mode.htotal, | 
|---|
| 2220 | crtc_state->hw.adjusted_mode.clock); | 
|---|
| 2221 |  | 
|---|
| 2222 | if (!num_scaler_users) | 
|---|
| 2223 | return scaler_prefill_latency; | 
|---|
| 2224 |  | 
|---|
| 2225 | scaler_prefill_latency = 4 * linetime; | 
|---|
| 2226 |  | 
|---|
| 2227 | if (num_scaler_users > 1) { | 
|---|
| 2228 | u64 hscale_k = max(1000, mul_u32_u32(scaler_state->scalers[0].hscale, 1000) >> 16); | 
|---|
| 2229 | u64 vscale_k = max(1000, mul_u32_u32(scaler_state->scalers[0].vscale, 1000) >> 16); | 
|---|
| 2230 | int chroma_downscaling_factor = | 
|---|
| 2231 | crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ? 2 : 1; | 
|---|
| 2232 | int latency; | 
|---|
| 2233 |  | 
|---|
| 2234 | latency = DIV_ROUND_UP_ULL((4 * linetime * hscale_k * vscale_k * | 
|---|
| 2235 | chroma_downscaling_factor), 1000000); | 
|---|
| 2236 | scaler_prefill_latency += latency; | 
|---|
| 2237 | } | 
|---|
| 2238 |  | 
|---|
| 2239 | scaler_prefill_latency *= cdclk_prefill_adjustment(crtc_state); | 
|---|
| 2240 |  | 
|---|
| 2241 | return intel_usecs_to_scanlines(adjusted_mode: &crtc_state->hw.adjusted_mode, usecs: scaler_prefill_latency); | 
|---|
| 2242 | } | 
|---|
| 2243 |  | 
|---|
| 2244 | static bool | 
|---|
| 2245 | skl_is_vblank_too_short(const struct intel_crtc_state *crtc_state, | 
|---|
| 2246 | int wm0_lines, int latency) | 
|---|
| 2247 | { | 
|---|
| 2248 | const struct drm_display_mode *adjusted_mode = | 
|---|
| 2249 | &crtc_state->hw.adjusted_mode; | 
|---|
| 2250 |  | 
|---|
| 2251 | return crtc_state->framestart_delay + | 
|---|
| 2252 | intel_usecs_to_scanlines(adjusted_mode, usecs: latency) + | 
|---|
| 2253 | scaler_prefill_latency(crtc_state) + | 
|---|
| 2254 | dsc_prefill_latency(crtc_state) + | 
|---|
| 2255 | wm0_lines > | 
|---|
| 2256 | adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vblank_start; | 
|---|
| 2257 | } | 
|---|
| 2258 |  | 
|---|
| 2259 | static int skl_max_wm0_lines(const struct intel_crtc_state *crtc_state) | 
|---|
| 2260 | { | 
|---|
| 2261 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 2262 | enum plane_id plane_id; | 
|---|
| 2263 | int wm0_lines = 0; | 
|---|
| 2264 |  | 
|---|
| 2265 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 2266 | const struct skl_plane_wm *wm = &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 2267 |  | 
|---|
| 2268 | /* FIXME what about !skl_wm_has_lines() platforms? */ | 
|---|
| 2269 | wm0_lines = max_t(int, wm0_lines, wm->wm[0].lines); | 
|---|
| 2270 | } | 
|---|
| 2271 |  | 
|---|
| 2272 | return wm0_lines; | 
|---|
| 2273 | } | 
|---|
| 2274 |  | 
|---|
| 2275 | /* | 
|---|
| 2276 | * TODO: In case we use PKG_C_LATENCY to allow C-states when the delayed vblank | 
|---|
| 2277 | * size is too small for the package C exit latency we need to notify PSR about | 
|---|
| 2278 | * the scenario to apply Wa_16025596647. | 
|---|
| 2279 | */ | 
|---|
| 2280 | static int skl_max_wm_level_for_vblank(struct intel_crtc_state *crtc_state, | 
|---|
| 2281 | int wm0_lines) | 
|---|
| 2282 | { | 
|---|
| 2283 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 2284 | int level; | 
|---|
| 2285 |  | 
|---|
| 2286 | for (level = display->wm.num_levels - 1; level >= 0; level--) { | 
|---|
| 2287 | int latency; | 
|---|
| 2288 |  | 
|---|
| 2289 | /* FIXME should we care about the latency w/a's? */ | 
|---|
| 2290 | latency = skl_wm_latency(display, level, NULL); | 
|---|
| 2291 | if (latency == 0) | 
|---|
| 2292 | continue; | 
|---|
| 2293 |  | 
|---|
| 2294 | /* FIXME is it correct to use 0 latency for wm0 here? */ | 
|---|
| 2295 | if (level == 0) | 
|---|
| 2296 | latency = 0; | 
|---|
| 2297 |  | 
|---|
| 2298 | if (!skl_is_vblank_too_short(crtc_state, wm0_lines, latency)) | 
|---|
| 2299 | return level; | 
|---|
| 2300 | } | 
|---|
| 2301 |  | 
|---|
| 2302 | return -EINVAL; | 
|---|
| 2303 | } | 
|---|
| 2304 |  | 
|---|
| 2305 | static int skl_wm_check_vblank(struct intel_crtc_state *crtc_state) | 
|---|
| 2306 | { | 
|---|
| 2307 | struct intel_display *display = to_intel_display(crtc_state); | 
|---|
| 2308 | struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); | 
|---|
| 2309 | int wm0_lines, level; | 
|---|
| 2310 |  | 
|---|
| 2311 | if (!crtc_state->hw.active) | 
|---|
| 2312 | return 0; | 
|---|
| 2313 |  | 
|---|
| 2314 | wm0_lines = skl_max_wm0_lines(crtc_state); | 
|---|
| 2315 |  | 
|---|
| 2316 | level = skl_max_wm_level_for_vblank(crtc_state, wm0_lines); | 
|---|
| 2317 | if (level < 0) | 
|---|
| 2318 | return level; | 
|---|
| 2319 |  | 
|---|
| 2320 | /* | 
|---|
| 2321 | * PSR needs to toggle LATENCY_REPORTING_REMOVED_PIPE_* | 
|---|
| 2322 | * based on whether we're limited by the vblank duration. | 
|---|
| 2323 | */ | 
|---|
| 2324 | crtc_state->wm_level_disabled = level < display->wm.num_levels - 1; | 
|---|
| 2325 |  | 
|---|
| 2326 | for (level++; level < display->wm.num_levels; level++) { | 
|---|
| 2327 | enum plane_id plane_id; | 
|---|
| 2328 |  | 
|---|
| 2329 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 2330 | struct skl_plane_wm *wm = | 
|---|
| 2331 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 2332 |  | 
|---|
| 2333 | /* | 
|---|
| 2334 | * FIXME just clear enable or flag the entire | 
|---|
| 2335 | * thing as bad via min_ddb_alloc=U16_MAX? | 
|---|
| 2336 | */ | 
|---|
| 2337 | wm->wm[level].enable = false; | 
|---|
| 2338 | wm->uv_wm[level].enable = false; | 
|---|
| 2339 | } | 
|---|
| 2340 | } | 
|---|
| 2341 |  | 
|---|
| 2342 | if (DISPLAY_VER(display) >= 12 && | 
|---|
| 2343 | display->sagv.block_time_us && | 
|---|
| 2344 | skl_is_vblank_too_short(crtc_state, wm0_lines, | 
|---|
| 2345 | latency: display->sagv.block_time_us)) { | 
|---|
| 2346 | enum plane_id plane_id; | 
|---|
| 2347 |  | 
|---|
| 2348 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 2349 | struct skl_plane_wm *wm = | 
|---|
| 2350 | &crtc_state->wm.skl.optimal.planes[plane_id]; | 
|---|
| 2351 |  | 
|---|
| 2352 | wm->sagv.wm0.enable = false; | 
|---|
| 2353 | wm->sagv.trans_wm.enable = false; | 
|---|
| 2354 | } | 
|---|
| 2355 | } | 
|---|
| 2356 |  | 
|---|
| 2357 | return 0; | 
|---|
| 2358 | } | 
|---|
| 2359 |  | 
|---|
| 2360 | static int skl_build_pipe_wm(struct intel_atomic_state *state, | 
|---|
| 2361 | struct intel_crtc *crtc) | 
|---|
| 2362 | { | 
|---|
| 2363 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 2364 | struct intel_crtc_state *crtc_state = | 
|---|
| 2365 | intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 2366 | const struct intel_plane_state *plane_state; | 
|---|
| 2367 | struct intel_plane *plane; | 
|---|
| 2368 | int ret, i; | 
|---|
| 2369 |  | 
|---|
| 2370 | for_each_new_intel_plane_in_state(state, plane, plane_state, i) { | 
|---|
| 2371 | /* | 
|---|
| 2372 | * FIXME should perhaps check {old,new}_plane_crtc->hw.crtc | 
|---|
| 2373 | * instead but we don't populate that correctly for NV12 Y | 
|---|
| 2374 | * planes so for now hack this. | 
|---|
| 2375 | */ | 
|---|
| 2376 | if (plane->pipe != crtc->pipe) | 
|---|
| 2377 | continue; | 
|---|
| 2378 |  | 
|---|
| 2379 | if (DISPLAY_VER(display) >= 11) | 
|---|
| 2380 | ret = icl_build_plane_wm(crtc_state, plane_state); | 
|---|
| 2381 | else | 
|---|
| 2382 | ret = skl_build_plane_wm(crtc_state, plane_state); | 
|---|
| 2383 | if (ret) | 
|---|
| 2384 | return ret; | 
|---|
| 2385 | } | 
|---|
| 2386 |  | 
|---|
| 2387 | crtc_state->wm.skl.optimal = crtc_state->wm.skl.raw; | 
|---|
| 2388 |  | 
|---|
| 2389 | return skl_wm_check_vblank(crtc_state); | 
|---|
| 2390 | } | 
|---|
| 2391 |  | 
|---|
| 2392 | static bool skl_wm_level_equals(const struct skl_wm_level *l1, | 
|---|
| 2393 | const struct skl_wm_level *l2) | 
|---|
| 2394 | { | 
|---|
| 2395 | return l1->enable == l2->enable && | 
|---|
| 2396 | l1->ignore_lines == l2->ignore_lines && | 
|---|
| 2397 | l1->lines == l2->lines && | 
|---|
| 2398 | l1->blocks == l2->blocks && | 
|---|
| 2399 | l1->auto_min_alloc_wm_enable == l2->auto_min_alloc_wm_enable; | 
|---|
| 2400 | } | 
|---|
| 2401 |  | 
|---|
| 2402 | static bool skl_plane_wm_equals(struct intel_display *display, | 
|---|
| 2403 | const struct skl_plane_wm *wm1, | 
|---|
| 2404 | const struct skl_plane_wm *wm2) | 
|---|
| 2405 | { | 
|---|
| 2406 | int level; | 
|---|
| 2407 |  | 
|---|
| 2408 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 2409 | /* | 
|---|
| 2410 | * We don't check uv_wm as the hardware doesn't actually | 
|---|
| 2411 | * use it. It only gets used for calculating the required | 
|---|
| 2412 | * ddb allocation. | 
|---|
| 2413 | */ | 
|---|
| 2414 | if (!skl_wm_level_equals(l1: &wm1->wm[level], l2: &wm2->wm[level])) | 
|---|
| 2415 | return false; | 
|---|
| 2416 | } | 
|---|
| 2417 |  | 
|---|
| 2418 | return skl_wm_level_equals(l1: &wm1->trans_wm, l2: &wm2->trans_wm) && | 
|---|
| 2419 | skl_wm_level_equals(l1: &wm1->sagv.wm0, l2: &wm2->sagv.wm0) && | 
|---|
| 2420 | skl_wm_level_equals(l1: &wm1->sagv.trans_wm, l2: &wm2->sagv.trans_wm); | 
|---|
| 2421 | } | 
|---|
| 2422 |  | 
|---|
| 2423 | static bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a, | 
|---|
| 2424 | const struct skl_ddb_entry *b) | 
|---|
| 2425 | { | 
|---|
| 2426 | return a->start < b->end && b->start < a->end; | 
|---|
| 2427 | } | 
|---|
| 2428 |  | 
|---|
| 2429 | static void skl_ddb_entry_union(struct skl_ddb_entry *a, | 
|---|
| 2430 | const struct skl_ddb_entry *b) | 
|---|
| 2431 | { | 
|---|
| 2432 | if (a->end && b->end) { | 
|---|
| 2433 | a->start = min(a->start, b->start); | 
|---|
| 2434 | a->end = max(a->end, b->end); | 
|---|
| 2435 | } else if (b->end) { | 
|---|
| 2436 | a->start = b->start; | 
|---|
| 2437 | a->end = b->end; | 
|---|
| 2438 | } | 
|---|
| 2439 | } | 
|---|
| 2440 |  | 
|---|
| 2441 | bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry *ddb, | 
|---|
| 2442 | const struct skl_ddb_entry *entries, | 
|---|
| 2443 | int num_entries, int ignore_idx) | 
|---|
| 2444 | { | 
|---|
| 2445 | int i; | 
|---|
| 2446 |  | 
|---|
| 2447 | for (i = 0; i < num_entries; i++) { | 
|---|
| 2448 | if (i != ignore_idx && | 
|---|
| 2449 | skl_ddb_entries_overlap(a: ddb, b: &entries[i])) | 
|---|
| 2450 | return true; | 
|---|
| 2451 | } | 
|---|
| 2452 |  | 
|---|
| 2453 | return false; | 
|---|
| 2454 | } | 
|---|
| 2455 |  | 
|---|
| 2456 | static int | 
|---|
| 2457 | skl_ddb_add_affected_planes(struct intel_atomic_state *state, | 
|---|
| 2458 | struct intel_crtc *crtc) | 
|---|
| 2459 | { | 
|---|
| 2460 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2461 | const struct intel_crtc_state *old_crtc_state = | 
|---|
| 2462 | intel_atomic_get_old_crtc_state(state, crtc); | 
|---|
| 2463 | struct intel_crtc_state *new_crtc_state = | 
|---|
| 2464 | intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 2465 | struct intel_plane *plane; | 
|---|
| 2466 |  | 
|---|
| 2467 | for_each_intel_plane_on_crtc(display->drm, crtc, plane) { | 
|---|
| 2468 | struct intel_plane_state *plane_state; | 
|---|
| 2469 | enum plane_id plane_id = plane->id; | 
|---|
| 2470 |  | 
|---|
| 2471 | if (skl_ddb_entry_equal(e1: &old_crtc_state->wm.skl.plane_ddb[plane_id], | 
|---|
| 2472 | e2: &new_crtc_state->wm.skl.plane_ddb[plane_id]) && | 
|---|
| 2473 | skl_ddb_entry_equal(e1: &old_crtc_state->wm.skl.plane_ddb_y[plane_id], | 
|---|
| 2474 | e2: &new_crtc_state->wm.skl.plane_ddb_y[plane_id])) | 
|---|
| 2475 | continue; | 
|---|
| 2476 |  | 
|---|
| 2477 | if (new_crtc_state->do_async_flip) { | 
|---|
| 2478 | drm_dbg_kms(display->drm, "[PLANE:%d:%s] Can't change DDB during async flip\n", | 
|---|
| 2479 | plane->base.base.id, plane->base.name); | 
|---|
| 2480 | return -EINVAL; | 
|---|
| 2481 | } | 
|---|
| 2482 |  | 
|---|
| 2483 | plane_state = intel_atomic_get_plane_state(state, plane); | 
|---|
| 2484 | if (IS_ERR(ptr: plane_state)) | 
|---|
| 2485 | return PTR_ERR(ptr: plane_state); | 
|---|
| 2486 |  | 
|---|
| 2487 | new_crtc_state->update_planes |= BIT(plane_id); | 
|---|
| 2488 | new_crtc_state->async_flip_planes = 0; | 
|---|
| 2489 | new_crtc_state->do_async_flip = false; | 
|---|
| 2490 | } | 
|---|
| 2491 |  | 
|---|
| 2492 | return 0; | 
|---|
| 2493 | } | 
|---|
| 2494 |  | 
|---|
| 2495 | static u8 intel_dbuf_enabled_slices(const struct intel_dbuf_state *dbuf_state) | 
|---|
| 2496 | { | 
|---|
| 2497 | struct intel_display *display = to_intel_display(dbuf_state->base.state->base.dev); | 
|---|
| 2498 | u8 enabled_slices; | 
|---|
| 2499 | enum pipe pipe; | 
|---|
| 2500 |  | 
|---|
| 2501 | /* | 
|---|
| 2502 | * FIXME: For now we always enable slice S1 as per | 
|---|
| 2503 | * the Bspec display initialization sequence. | 
|---|
| 2504 | */ | 
|---|
| 2505 | enabled_slices = BIT(DBUF_S1); | 
|---|
| 2506 |  | 
|---|
| 2507 | for_each_pipe(display, pipe) | 
|---|
| 2508 | enabled_slices |= dbuf_state->slices[pipe]; | 
|---|
| 2509 |  | 
|---|
| 2510 | return enabled_slices; | 
|---|
| 2511 | } | 
|---|
| 2512 |  | 
|---|
| 2513 | static int | 
|---|
| 2514 | skl_compute_ddb(struct intel_atomic_state *state) | 
|---|
| 2515 | { | 
|---|
| 2516 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2517 | const struct intel_dbuf_state *old_dbuf_state; | 
|---|
| 2518 | struct intel_dbuf_state *new_dbuf_state = NULL; | 
|---|
| 2519 | struct intel_crtc_state *new_crtc_state; | 
|---|
| 2520 | struct intel_crtc *crtc; | 
|---|
| 2521 | int ret, i; | 
|---|
| 2522 |  | 
|---|
| 2523 | for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { | 
|---|
| 2524 | new_dbuf_state = intel_atomic_get_dbuf_state(state); | 
|---|
| 2525 | if (IS_ERR(ptr: new_dbuf_state)) | 
|---|
| 2526 | return PTR_ERR(ptr: new_dbuf_state); | 
|---|
| 2527 |  | 
|---|
| 2528 | old_dbuf_state = intel_atomic_get_old_dbuf_state(state); | 
|---|
| 2529 | break; | 
|---|
| 2530 | } | 
|---|
| 2531 |  | 
|---|
| 2532 | if (!new_dbuf_state) | 
|---|
| 2533 | return 0; | 
|---|
| 2534 |  | 
|---|
| 2535 | new_dbuf_state->active_pipes = | 
|---|
| 2536 | intel_calc_active_pipes(state, active_pipes: old_dbuf_state->active_pipes); | 
|---|
| 2537 |  | 
|---|
| 2538 | if (old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) { | 
|---|
| 2539 | ret = intel_atomic_lock_global_state(obj_state: &new_dbuf_state->base); | 
|---|
| 2540 | if (ret) | 
|---|
| 2541 | return ret; | 
|---|
| 2542 | } | 
|---|
| 2543 |  | 
|---|
| 2544 | if (HAS_MBUS_JOINING(display)) { | 
|---|
| 2545 | new_dbuf_state->joined_mbus = | 
|---|
| 2546 | adlp_check_mbus_joined(active_pipes: new_dbuf_state->active_pipes); | 
|---|
| 2547 |  | 
|---|
| 2548 | if (old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) { | 
|---|
| 2549 | ret = intel_cdclk_state_set_joined_mbus(state, joined_mbus: new_dbuf_state->joined_mbus); | 
|---|
| 2550 | if (ret) | 
|---|
| 2551 | return ret; | 
|---|
| 2552 | } | 
|---|
| 2553 | } | 
|---|
| 2554 |  | 
|---|
| 2555 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 2556 | enum pipe pipe = crtc->pipe; | 
|---|
| 2557 |  | 
|---|
| 2558 | new_dbuf_state->slices[pipe] = | 
|---|
| 2559 | skl_compute_dbuf_slices(crtc, active_pipes: new_dbuf_state->active_pipes, | 
|---|
| 2560 | join_mbus: new_dbuf_state->joined_mbus); | 
|---|
| 2561 |  | 
|---|
| 2562 | if (old_dbuf_state->slices[pipe] == new_dbuf_state->slices[pipe]) | 
|---|
| 2563 | continue; | 
|---|
| 2564 |  | 
|---|
| 2565 | ret = intel_atomic_lock_global_state(obj_state: &new_dbuf_state->base); | 
|---|
| 2566 | if (ret) | 
|---|
| 2567 | return ret; | 
|---|
| 2568 | } | 
|---|
| 2569 |  | 
|---|
| 2570 | new_dbuf_state->enabled_slices = intel_dbuf_enabled_slices(dbuf_state: new_dbuf_state); | 
|---|
| 2571 |  | 
|---|
| 2572 | if (old_dbuf_state->enabled_slices != new_dbuf_state->enabled_slices || | 
|---|
| 2573 | old_dbuf_state->joined_mbus != new_dbuf_state->joined_mbus) { | 
|---|
| 2574 | ret = intel_atomic_serialize_global_state(obj_state: &new_dbuf_state->base); | 
|---|
| 2575 | if (ret) | 
|---|
| 2576 | return ret; | 
|---|
| 2577 |  | 
|---|
| 2578 | drm_dbg_kms(display->drm, | 
|---|
| 2579 | "Enabled dbuf slices 0x%x -> 0x%x (total dbuf slices 0x%x), mbus joined? %s->%s\n", | 
|---|
| 2580 | old_dbuf_state->enabled_slices, | 
|---|
| 2581 | new_dbuf_state->enabled_slices, | 
|---|
| 2582 | DISPLAY_INFO(display)->dbuf.slice_mask, | 
|---|
| 2583 | str_yes_no(old_dbuf_state->joined_mbus), | 
|---|
| 2584 | str_yes_no(new_dbuf_state->joined_mbus)); | 
|---|
| 2585 | } | 
|---|
| 2586 |  | 
|---|
| 2587 | for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { | 
|---|
| 2588 | enum pipe pipe = crtc->pipe; | 
|---|
| 2589 |  | 
|---|
| 2590 | new_dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state: new_crtc_state); | 
|---|
| 2591 |  | 
|---|
| 2592 | if (old_dbuf_state->weight[pipe] == new_dbuf_state->weight[pipe]) | 
|---|
| 2593 | continue; | 
|---|
| 2594 |  | 
|---|
| 2595 | ret = intel_atomic_lock_global_state(obj_state: &new_dbuf_state->base); | 
|---|
| 2596 | if (ret) | 
|---|
| 2597 | return ret; | 
|---|
| 2598 | } | 
|---|
| 2599 |  | 
|---|
| 2600 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 2601 | ret = skl_crtc_allocate_ddb(state, crtc); | 
|---|
| 2602 | if (ret) | 
|---|
| 2603 | return ret; | 
|---|
| 2604 | } | 
|---|
| 2605 |  | 
|---|
| 2606 | for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { | 
|---|
| 2607 | ret = skl_crtc_allocate_plane_ddb(state, crtc); | 
|---|
| 2608 | if (ret) | 
|---|
| 2609 | return ret; | 
|---|
| 2610 |  | 
|---|
| 2611 | ret = skl_ddb_add_affected_planes(state, crtc); | 
|---|
| 2612 | if (ret) | 
|---|
| 2613 | return ret; | 
|---|
| 2614 | } | 
|---|
| 2615 |  | 
|---|
| 2616 | return 0; | 
|---|
| 2617 | } | 
|---|
| 2618 |  | 
|---|
| 2619 | static char enast(bool enable) | 
|---|
| 2620 | { | 
|---|
| 2621 | return enable ? '*' : ' '; | 
|---|
| 2622 | } | 
|---|
| 2623 |  | 
|---|
| 2624 | static noinline_for_stack void | 
|---|
| 2625 | skl_print_plane_changes(struct intel_display *display, | 
|---|
| 2626 | struct intel_plane *plane, | 
|---|
| 2627 | const struct skl_plane_wm *old_wm, | 
|---|
| 2628 | const struct skl_plane_wm *new_wm) | 
|---|
| 2629 | { | 
|---|
| 2630 | drm_dbg_kms(display->drm, | 
|---|
| 2631 | "[PLANE:%d:%s]   level %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm" | 
|---|
| 2632 | " -> %cwm0,%cwm1,%cwm2,%cwm3,%cwm4,%cwm5,%cwm6,%cwm7,%ctwm,%cswm,%cstwm\n", | 
|---|
| 2633 | plane->base.base.id, plane->base.name, | 
|---|
| 2634 | enast(old_wm->wm[0].enable), enast(old_wm->wm[1].enable), | 
|---|
| 2635 | enast(old_wm->wm[2].enable), enast(old_wm->wm[3].enable), | 
|---|
| 2636 | enast(old_wm->wm[4].enable), enast(old_wm->wm[5].enable), | 
|---|
| 2637 | enast(old_wm->wm[6].enable), enast(old_wm->wm[7].enable), | 
|---|
| 2638 | enast(old_wm->trans_wm.enable), | 
|---|
| 2639 | enast(old_wm->sagv.wm0.enable), | 
|---|
| 2640 | enast(old_wm->sagv.trans_wm.enable), | 
|---|
| 2641 | enast(new_wm->wm[0].enable), enast(new_wm->wm[1].enable), | 
|---|
| 2642 | enast(new_wm->wm[2].enable), enast(new_wm->wm[3].enable), | 
|---|
| 2643 | enast(new_wm->wm[4].enable), enast(new_wm->wm[5].enable), | 
|---|
| 2644 | enast(new_wm->wm[6].enable), enast(new_wm->wm[7].enable), | 
|---|
| 2645 | enast(new_wm->trans_wm.enable), | 
|---|
| 2646 | enast(new_wm->sagv.wm0.enable), | 
|---|
| 2647 | enast(new_wm->sagv.trans_wm.enable)); | 
|---|
| 2648 |  | 
|---|
| 2649 | drm_dbg_kms(display->drm, | 
|---|
| 2650 | "[PLANE:%d:%s]   lines %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d" | 
|---|
| 2651 | " -> %c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%3d,%c%4d\n", | 
|---|
| 2652 | plane->base.base.id, plane->base.name, | 
|---|
| 2653 | enast(old_wm->wm[0].ignore_lines), old_wm->wm[0].lines, | 
|---|
| 2654 | enast(old_wm->wm[1].ignore_lines), old_wm->wm[1].lines, | 
|---|
| 2655 | enast(old_wm->wm[2].ignore_lines), old_wm->wm[2].lines, | 
|---|
| 2656 | enast(old_wm->wm[3].ignore_lines), old_wm->wm[3].lines, | 
|---|
| 2657 | enast(old_wm->wm[4].ignore_lines), old_wm->wm[4].lines, | 
|---|
| 2658 | enast(old_wm->wm[5].ignore_lines), old_wm->wm[5].lines, | 
|---|
| 2659 | enast(old_wm->wm[6].ignore_lines), old_wm->wm[6].lines, | 
|---|
| 2660 | enast(old_wm->wm[7].ignore_lines), old_wm->wm[7].lines, | 
|---|
| 2661 | enast(old_wm->trans_wm.ignore_lines), old_wm->trans_wm.lines, | 
|---|
| 2662 | enast(old_wm->sagv.wm0.ignore_lines), old_wm->sagv.wm0.lines, | 
|---|
| 2663 | enast(old_wm->sagv.trans_wm.ignore_lines), old_wm->sagv.trans_wm.lines, | 
|---|
| 2664 | enast(new_wm->wm[0].ignore_lines), new_wm->wm[0].lines, | 
|---|
| 2665 | enast(new_wm->wm[1].ignore_lines), new_wm->wm[1].lines, | 
|---|
| 2666 | enast(new_wm->wm[2].ignore_lines), new_wm->wm[2].lines, | 
|---|
| 2667 | enast(new_wm->wm[3].ignore_lines), new_wm->wm[3].lines, | 
|---|
| 2668 | enast(new_wm->wm[4].ignore_lines), new_wm->wm[4].lines, | 
|---|
| 2669 | enast(new_wm->wm[5].ignore_lines), new_wm->wm[5].lines, | 
|---|
| 2670 | enast(new_wm->wm[6].ignore_lines), new_wm->wm[6].lines, | 
|---|
| 2671 | enast(new_wm->wm[7].ignore_lines), new_wm->wm[7].lines, | 
|---|
| 2672 | enast(new_wm->trans_wm.ignore_lines), new_wm->trans_wm.lines, | 
|---|
| 2673 | enast(new_wm->sagv.wm0.ignore_lines), new_wm->sagv.wm0.lines, | 
|---|
| 2674 | enast(new_wm->sagv.trans_wm.ignore_lines), new_wm->sagv.trans_wm.lines); | 
|---|
| 2675 |  | 
|---|
| 2676 | drm_dbg_kms(display->drm, | 
|---|
| 2677 | "[PLANE:%d:%s]  blocks %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d" | 
|---|
| 2678 | " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n", | 
|---|
| 2679 | plane->base.base.id, plane->base.name, | 
|---|
| 2680 | old_wm->wm[0].blocks, old_wm->wm[1].blocks, | 
|---|
| 2681 | old_wm->wm[2].blocks, old_wm->wm[3].blocks, | 
|---|
| 2682 | old_wm->wm[4].blocks, old_wm->wm[5].blocks, | 
|---|
| 2683 | old_wm->wm[6].blocks, old_wm->wm[7].blocks, | 
|---|
| 2684 | old_wm->trans_wm.blocks, | 
|---|
| 2685 | old_wm->sagv.wm0.blocks, | 
|---|
| 2686 | old_wm->sagv.trans_wm.blocks, | 
|---|
| 2687 | new_wm->wm[0].blocks, new_wm->wm[1].blocks, | 
|---|
| 2688 | new_wm->wm[2].blocks, new_wm->wm[3].blocks, | 
|---|
| 2689 | new_wm->wm[4].blocks, new_wm->wm[5].blocks, | 
|---|
| 2690 | new_wm->wm[6].blocks, new_wm->wm[7].blocks, | 
|---|
| 2691 | new_wm->trans_wm.blocks, | 
|---|
| 2692 | new_wm->sagv.wm0.blocks, | 
|---|
| 2693 | new_wm->sagv.trans_wm.blocks); | 
|---|
| 2694 |  | 
|---|
| 2695 | drm_dbg_kms(display->drm, | 
|---|
| 2696 | "[PLANE:%d:%s] min_ddb %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d" | 
|---|
| 2697 | " -> %4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%4d,%5d\n", | 
|---|
| 2698 | plane->base.base.id, plane->base.name, | 
|---|
| 2699 | old_wm->wm[0].min_ddb_alloc, old_wm->wm[1].min_ddb_alloc, | 
|---|
| 2700 | old_wm->wm[2].min_ddb_alloc, old_wm->wm[3].min_ddb_alloc, | 
|---|
| 2701 | old_wm->wm[4].min_ddb_alloc, old_wm->wm[5].min_ddb_alloc, | 
|---|
| 2702 | old_wm->wm[6].min_ddb_alloc, old_wm->wm[7].min_ddb_alloc, | 
|---|
| 2703 | old_wm->trans_wm.min_ddb_alloc, | 
|---|
| 2704 | old_wm->sagv.wm0.min_ddb_alloc, | 
|---|
| 2705 | old_wm->sagv.trans_wm.min_ddb_alloc, | 
|---|
| 2706 | new_wm->wm[0].min_ddb_alloc, new_wm->wm[1].min_ddb_alloc, | 
|---|
| 2707 | new_wm->wm[2].min_ddb_alloc, new_wm->wm[3].min_ddb_alloc, | 
|---|
| 2708 | new_wm->wm[4].min_ddb_alloc, new_wm->wm[5].min_ddb_alloc, | 
|---|
| 2709 | new_wm->wm[6].min_ddb_alloc, new_wm->wm[7].min_ddb_alloc, | 
|---|
| 2710 | new_wm->trans_wm.min_ddb_alloc, | 
|---|
| 2711 | new_wm->sagv.wm0.min_ddb_alloc, | 
|---|
| 2712 | new_wm->sagv.trans_wm.min_ddb_alloc); | 
|---|
| 2713 | } | 
|---|
| 2714 |  | 
|---|
| 2715 | static void | 
|---|
| 2716 | skl_print_wm_changes(struct intel_atomic_state *state) | 
|---|
| 2717 | { | 
|---|
| 2718 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2719 | const struct intel_crtc_state *old_crtc_state; | 
|---|
| 2720 | const struct intel_crtc_state *new_crtc_state; | 
|---|
| 2721 | struct intel_plane *plane; | 
|---|
| 2722 | struct intel_crtc *crtc; | 
|---|
| 2723 | int i; | 
|---|
| 2724 |  | 
|---|
| 2725 | if (!drm_debug_enabled(DRM_UT_KMS)) | 
|---|
| 2726 | return; | 
|---|
| 2727 |  | 
|---|
| 2728 | for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, | 
|---|
| 2729 | new_crtc_state, i) { | 
|---|
| 2730 | const struct skl_pipe_wm *old_pipe_wm, *new_pipe_wm; | 
|---|
| 2731 |  | 
|---|
| 2732 | old_pipe_wm = &old_crtc_state->wm.skl.optimal; | 
|---|
| 2733 | new_pipe_wm = &new_crtc_state->wm.skl.optimal; | 
|---|
| 2734 |  | 
|---|
| 2735 | for_each_intel_plane_on_crtc(display->drm, crtc, plane) { | 
|---|
| 2736 | enum plane_id plane_id = plane->id; | 
|---|
| 2737 | const struct skl_ddb_entry *old, *new; | 
|---|
| 2738 |  | 
|---|
| 2739 | old = &old_crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 2740 | new = &new_crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 2741 |  | 
|---|
| 2742 | if (skl_ddb_entry_equal(e1: old, e2: new)) | 
|---|
| 2743 | continue; | 
|---|
| 2744 | drm_dbg_kms(display->drm, | 
|---|
| 2745 | "[PLANE:%d:%s] ddb (%4d - %4d) -> (%4d - %4d), size %4d -> %4d\n", | 
|---|
| 2746 | plane->base.base.id, plane->base.name, | 
|---|
| 2747 | old->start, old->end, new->start, new->end, | 
|---|
| 2748 | skl_ddb_entry_size(old), skl_ddb_entry_size(new)); | 
|---|
| 2749 | } | 
|---|
| 2750 |  | 
|---|
| 2751 | for_each_intel_plane_on_crtc(display->drm, crtc, plane) { | 
|---|
| 2752 | enum plane_id plane_id = plane->id; | 
|---|
| 2753 | const struct skl_plane_wm *old_wm, *new_wm; | 
|---|
| 2754 |  | 
|---|
| 2755 | old_wm = &old_pipe_wm->planes[plane_id]; | 
|---|
| 2756 | new_wm = &new_pipe_wm->planes[plane_id]; | 
|---|
| 2757 |  | 
|---|
| 2758 | if (skl_plane_wm_equals(display, wm1: old_wm, wm2: new_wm)) | 
|---|
| 2759 | continue; | 
|---|
| 2760 |  | 
|---|
| 2761 | skl_print_plane_changes(display, plane, old_wm, new_wm); | 
|---|
| 2762 | } | 
|---|
| 2763 | } | 
|---|
| 2764 | } | 
|---|
| 2765 |  | 
|---|
| 2766 | static bool skl_plane_selected_wm_equals(struct intel_plane *plane, | 
|---|
| 2767 | const struct skl_pipe_wm *old_pipe_wm, | 
|---|
| 2768 | const struct skl_pipe_wm *new_pipe_wm) | 
|---|
| 2769 | { | 
|---|
| 2770 | struct intel_display *display = to_intel_display(plane); | 
|---|
| 2771 | int level; | 
|---|
| 2772 |  | 
|---|
| 2773 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 2774 | /* | 
|---|
| 2775 | * We don't check uv_wm as the hardware doesn't actually | 
|---|
| 2776 | * use it. It only gets used for calculating the required | 
|---|
| 2777 | * ddb allocation. | 
|---|
| 2778 | */ | 
|---|
| 2779 | if (!skl_wm_level_equals(l1: skl_plane_wm_level(pipe_wm: old_pipe_wm, plane_id: plane->id, level), | 
|---|
| 2780 | l2: skl_plane_wm_level(pipe_wm: new_pipe_wm, plane_id: plane->id, level))) | 
|---|
| 2781 | return false; | 
|---|
| 2782 | } | 
|---|
| 2783 |  | 
|---|
| 2784 | if (HAS_HW_SAGV_WM(display)) { | 
|---|
| 2785 | const struct skl_plane_wm *old_wm = &old_pipe_wm->planes[plane->id]; | 
|---|
| 2786 | const struct skl_plane_wm *new_wm = &new_pipe_wm->planes[plane->id]; | 
|---|
| 2787 |  | 
|---|
| 2788 | if (!skl_wm_level_equals(l1: &old_wm->sagv.wm0, l2: &new_wm->sagv.wm0) || | 
|---|
| 2789 | !skl_wm_level_equals(l1: &old_wm->sagv.trans_wm, l2: &new_wm->sagv.trans_wm)) | 
|---|
| 2790 | return false; | 
|---|
| 2791 | } | 
|---|
| 2792 |  | 
|---|
| 2793 | return skl_wm_level_equals(l1: skl_plane_trans_wm(pipe_wm: old_pipe_wm, plane_id: plane->id), | 
|---|
| 2794 | l2: skl_plane_trans_wm(pipe_wm: new_pipe_wm, plane_id: plane->id)); | 
|---|
| 2795 | } | 
|---|
| 2796 |  | 
|---|
| 2797 | /* | 
|---|
| 2798 | * To make sure the cursor watermark registers are always consistent | 
|---|
| 2799 | * with our computed state the following scenario needs special | 
|---|
| 2800 | * treatment: | 
|---|
| 2801 | * | 
|---|
| 2802 | * 1. enable cursor | 
|---|
| 2803 | * 2. move cursor entirely offscreen | 
|---|
| 2804 | * 3. disable cursor | 
|---|
| 2805 | * | 
|---|
| 2806 | * Step 2. does call .disable_plane() but does not zero the watermarks | 
|---|
| 2807 | * (since we consider an offscreen cursor still active for the purposes | 
|---|
| 2808 | * of watermarks). Step 3. would not normally call .disable_plane() | 
|---|
| 2809 | * because the actual plane visibility isn't changing, and we don't | 
|---|
| 2810 | * deallocate the cursor ddb until the pipe gets disabled. So we must | 
|---|
| 2811 | * force step 3. to call .disable_plane() to update the watermark | 
|---|
| 2812 | * registers properly. | 
|---|
| 2813 | * | 
|---|
| 2814 | * Other planes do not suffer from this issues as their watermarks are | 
|---|
| 2815 | * calculated based on the actual plane visibility. The only time this | 
|---|
| 2816 | * can trigger for the other planes is during the initial readout as the | 
|---|
| 2817 | * default value of the watermarks registers is not zero. | 
|---|
| 2818 | */ | 
|---|
| 2819 | static int skl_wm_add_affected_planes(struct intel_atomic_state *state, | 
|---|
| 2820 | struct intel_crtc *crtc) | 
|---|
| 2821 | { | 
|---|
| 2822 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2823 | const struct intel_crtc_state *old_crtc_state = | 
|---|
| 2824 | intel_atomic_get_old_crtc_state(state, crtc); | 
|---|
| 2825 | struct intel_crtc_state *new_crtc_state = | 
|---|
| 2826 | intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 2827 | struct intel_plane *plane; | 
|---|
| 2828 |  | 
|---|
| 2829 | for_each_intel_plane_on_crtc(display->drm, crtc, plane) { | 
|---|
| 2830 | struct intel_plane_state *plane_state; | 
|---|
| 2831 | enum plane_id plane_id = plane->id; | 
|---|
| 2832 |  | 
|---|
| 2833 | /* | 
|---|
| 2834 | * Force a full wm update for every plane on modeset. | 
|---|
| 2835 | * Required because the reset value of the wm registers | 
|---|
| 2836 | * is non-zero, whereas we want all disabled planes to | 
|---|
| 2837 | * have zero watermarks. So if we turn off the relevant | 
|---|
| 2838 | * power well the hardware state will go out of sync | 
|---|
| 2839 | * with the software state. | 
|---|
| 2840 | */ | 
|---|
| 2841 | if (!intel_crtc_needs_modeset(crtc_state: new_crtc_state) && | 
|---|
| 2842 | skl_plane_selected_wm_equals(plane, | 
|---|
| 2843 | old_pipe_wm: &old_crtc_state->wm.skl.optimal, | 
|---|
| 2844 | new_pipe_wm: &new_crtc_state->wm.skl.optimal)) | 
|---|
| 2845 | continue; | 
|---|
| 2846 |  | 
|---|
| 2847 | if (new_crtc_state->do_async_flip) { | 
|---|
| 2848 | drm_dbg_kms(display->drm, "[PLANE:%d:%s] Can't change watermarks during async flip\n", | 
|---|
| 2849 | plane->base.base.id, plane->base.name); | 
|---|
| 2850 | return -EINVAL; | 
|---|
| 2851 | } | 
|---|
| 2852 |  | 
|---|
| 2853 | plane_state = intel_atomic_get_plane_state(state, plane); | 
|---|
| 2854 | if (IS_ERR(ptr: plane_state)) | 
|---|
| 2855 | return PTR_ERR(ptr: plane_state); | 
|---|
| 2856 |  | 
|---|
| 2857 | new_crtc_state->update_planes |= BIT(plane_id); | 
|---|
| 2858 | new_crtc_state->async_flip_planes = 0; | 
|---|
| 2859 | new_crtc_state->do_async_flip = false; | 
|---|
| 2860 | } | 
|---|
| 2861 |  | 
|---|
| 2862 | return 0; | 
|---|
| 2863 | } | 
|---|
| 2864 |  | 
|---|
| 2865 | static int pkgc_max_linetime(struct intel_atomic_state *state) | 
|---|
| 2866 | { | 
|---|
| 2867 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2868 | const struct intel_crtc_state *crtc_state; | 
|---|
| 2869 | struct intel_crtc *crtc; | 
|---|
| 2870 | int i, max_linetime; | 
|---|
| 2871 |  | 
|---|
| 2872 | /* | 
|---|
| 2873 | * Apparenty the hardware uses WM_LINETIME internally for | 
|---|
| 2874 | * this stuff, compute everything based on that. | 
|---|
| 2875 | */ | 
|---|
| 2876 | for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { | 
|---|
| 2877 | display->pkgc.disable[crtc->pipe] = crtc_state->vrr.enable; | 
|---|
| 2878 | display->pkgc.linetime[crtc->pipe] = DIV_ROUND_UP(crtc_state->linetime, 8); | 
|---|
| 2879 | } | 
|---|
| 2880 |  | 
|---|
| 2881 | max_linetime = 0; | 
|---|
| 2882 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 2883 | if (display->pkgc.disable[crtc->pipe]) | 
|---|
| 2884 | return 0; | 
|---|
| 2885 |  | 
|---|
| 2886 | max_linetime = max(display->pkgc.linetime[crtc->pipe], max_linetime); | 
|---|
| 2887 | } | 
|---|
| 2888 |  | 
|---|
| 2889 | return max_linetime; | 
|---|
| 2890 | } | 
|---|
| 2891 |  | 
|---|
| 2892 | void | 
|---|
| 2893 | intel_program_dpkgc_latency(struct intel_atomic_state *state) | 
|---|
| 2894 | { | 
|---|
| 2895 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2896 | int max_linetime, latency, added_wake_time = 0; | 
|---|
| 2897 |  | 
|---|
| 2898 | if (DISPLAY_VER(display) < 20) | 
|---|
| 2899 | return; | 
|---|
| 2900 |  | 
|---|
| 2901 | mutex_lock(lock: &display->wm.wm_mutex); | 
|---|
| 2902 |  | 
|---|
| 2903 | latency = skl_watermark_max_latency(display, initial_wm_level: 1); | 
|---|
| 2904 |  | 
|---|
| 2905 | /* FIXME runtime changes to enable_flipq are racy */ | 
|---|
| 2906 | if (display->params.enable_flipq) | 
|---|
| 2907 | added_wake_time = intel_flipq_exec_time_us(display); | 
|---|
| 2908 |  | 
|---|
| 2909 | /* | 
|---|
| 2910 | * Wa_22020432604 | 
|---|
| 2911 | * "PKG_C_LATENCY Added Wake Time field is not working" | 
|---|
| 2912 | */ | 
|---|
| 2913 | if (latency && IS_DISPLAY_VER(display, 20, 30)) { | 
|---|
| 2914 | latency += added_wake_time; | 
|---|
| 2915 | added_wake_time = 0; | 
|---|
| 2916 | } | 
|---|
| 2917 |  | 
|---|
| 2918 | max_linetime = pkgc_max_linetime(state); | 
|---|
| 2919 |  | 
|---|
| 2920 | if (max_linetime == 0 || latency == 0) { | 
|---|
| 2921 | latency = REG_FIELD_GET(LNL_PKG_C_LATENCY_MASK, | 
|---|
| 2922 | LNL_PKG_C_LATENCY_MASK); | 
|---|
| 2923 | added_wake_time = 0; | 
|---|
| 2924 | } else { | 
|---|
| 2925 | /* | 
|---|
| 2926 | * Wa_22020299601 | 
|---|
| 2927 | * "Increase the latency programmed in PKG_C_LATENCY Pkg C Latency to be a | 
|---|
| 2928 | *  multiple of the pipeline time from WM_LINETIME" | 
|---|
| 2929 | */ | 
|---|
| 2930 | latency = roundup(latency, max_linetime); | 
|---|
| 2931 | } | 
|---|
| 2932 |  | 
|---|
| 2933 | intel_de_write(display, LNL_PKG_C_LATENCY, | 
|---|
| 2934 | REG_FIELD_PREP(LNL_ADDED_WAKE_TIME_MASK, added_wake_time) | | 
|---|
| 2935 | REG_FIELD_PREP(LNL_PKG_C_LATENCY_MASK, latency)); | 
|---|
| 2936 |  | 
|---|
| 2937 | mutex_unlock(lock: &display->wm.wm_mutex); | 
|---|
| 2938 | } | 
|---|
| 2939 |  | 
|---|
| 2940 | static int | 
|---|
| 2941 | skl_compute_wm(struct intel_atomic_state *state) | 
|---|
| 2942 | { | 
|---|
| 2943 | struct intel_display *display = to_intel_display(state); | 
|---|
| 2944 | struct intel_crtc *crtc; | 
|---|
| 2945 | struct intel_crtc_state __maybe_unused *new_crtc_state; | 
|---|
| 2946 | int ret, i; | 
|---|
| 2947 |  | 
|---|
| 2948 | for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { | 
|---|
| 2949 | ret = skl_build_pipe_wm(state, crtc); | 
|---|
| 2950 | if (ret) | 
|---|
| 2951 | return ret; | 
|---|
| 2952 | } | 
|---|
| 2953 |  | 
|---|
| 2954 | ret = skl_compute_ddb(state); | 
|---|
| 2955 | if (ret) | 
|---|
| 2956 | return ret; | 
|---|
| 2957 |  | 
|---|
| 2958 | /* | 
|---|
| 2959 | * skl_compute_ddb() will have adjusted the final watermarks | 
|---|
| 2960 | * based on how much ddb is available. Now we can actually | 
|---|
| 2961 | * check if the final watermarks changed. | 
|---|
| 2962 | */ | 
|---|
| 2963 | for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { | 
|---|
| 2964 | struct skl_pipe_wm *pipe_wm = &new_crtc_state->wm.skl.optimal; | 
|---|
| 2965 |  | 
|---|
| 2966 | /* | 
|---|
| 2967 | * We store use_sagv_wm in the crtc state rather than relying on | 
|---|
| 2968 | * that bw state since we have no convenient way to get at the | 
|---|
| 2969 | * latter from the plane commit hooks (especially in the legacy | 
|---|
| 2970 | * cursor case). | 
|---|
| 2971 | * | 
|---|
| 2972 | * drm_atomic_check_only() gets upset if we pull more crtcs | 
|---|
| 2973 | * into the state, so we have to calculate this based on the | 
|---|
| 2974 | * individual intel_crtc_can_enable_sagv() rather than | 
|---|
| 2975 | * the overall intel_bw_can_enable_sagv(). Otherwise the | 
|---|
| 2976 | * crtcs not included in the commit would not switch to the | 
|---|
| 2977 | * SAGV watermarks when we are about to enable SAGV, and that | 
|---|
| 2978 | * would lead to underruns. This does mean extra power draw | 
|---|
| 2979 | * when only a subset of the crtcs are blocking SAGV as the | 
|---|
| 2980 | * other crtcs can't be allowed to use the more optimal | 
|---|
| 2981 | * normal (ie. non-SAGV) watermarks. | 
|---|
| 2982 | */ | 
|---|
| 2983 | pipe_wm->use_sagv_wm = !HAS_HW_SAGV_WM(display) && | 
|---|
| 2984 | DISPLAY_VER(display) >= 12 && | 
|---|
| 2985 | intel_crtc_can_enable_sagv(crtc_state: new_crtc_state); | 
|---|
| 2986 |  | 
|---|
| 2987 | ret = skl_wm_add_affected_planes(state, crtc); | 
|---|
| 2988 | if (ret) | 
|---|
| 2989 | return ret; | 
|---|
| 2990 | } | 
|---|
| 2991 |  | 
|---|
| 2992 | skl_print_wm_changes(state); | 
|---|
| 2993 |  | 
|---|
| 2994 | return 0; | 
|---|
| 2995 | } | 
|---|
| 2996 |  | 
|---|
| 2997 | static void skl_wm_level_from_reg_val(struct intel_display *display, | 
|---|
| 2998 | u32 val, struct skl_wm_level *level) | 
|---|
| 2999 | { | 
|---|
| 3000 | level->enable = val & PLANE_WM_EN; | 
|---|
| 3001 | level->ignore_lines = val & PLANE_WM_IGNORE_LINES; | 
|---|
| 3002 | level->blocks = REG_FIELD_GET(PLANE_WM_BLOCKS_MASK, val); | 
|---|
| 3003 | level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val); | 
|---|
| 3004 | level->auto_min_alloc_wm_enable = DISPLAY_VER(display) >= 30 ? | 
|---|
| 3005 | val & PLANE_WM_AUTO_MIN_ALLOC_EN : 0; | 
|---|
| 3006 | } | 
|---|
| 3007 |  | 
|---|
| 3008 | static void skl_pipe_wm_get_hw_state(struct intel_crtc *crtc, | 
|---|
| 3009 | struct skl_pipe_wm *out) | 
|---|
| 3010 | { | 
|---|
| 3011 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 3012 | enum pipe pipe = crtc->pipe; | 
|---|
| 3013 | enum plane_id plane_id; | 
|---|
| 3014 | int level; | 
|---|
| 3015 | u32 val; | 
|---|
| 3016 |  | 
|---|
| 3017 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 3018 | struct skl_plane_wm *wm = &out->planes[plane_id]; | 
|---|
| 3019 |  | 
|---|
| 3020 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 3021 | if (plane_id != PLANE_CURSOR) | 
|---|
| 3022 | val = intel_de_read(display, PLANE_WM(pipe, plane_id, level)); | 
|---|
| 3023 | else | 
|---|
| 3024 | val = intel_de_read(display, CUR_WM(pipe, level)); | 
|---|
| 3025 |  | 
|---|
| 3026 | skl_wm_level_from_reg_val(display, val, level: &wm->wm[level]); | 
|---|
| 3027 | } | 
|---|
| 3028 |  | 
|---|
| 3029 | if (plane_id != PLANE_CURSOR) | 
|---|
| 3030 | val = intel_de_read(display, PLANE_WM_TRANS(pipe, plane_id)); | 
|---|
| 3031 | else | 
|---|
| 3032 | val = intel_de_read(display, CUR_WM_TRANS(pipe)); | 
|---|
| 3033 |  | 
|---|
| 3034 | skl_wm_level_from_reg_val(display, val, level: &wm->trans_wm); | 
|---|
| 3035 |  | 
|---|
| 3036 | if (HAS_HW_SAGV_WM(display)) { | 
|---|
| 3037 | if (plane_id != PLANE_CURSOR) | 
|---|
| 3038 | val = intel_de_read(display, PLANE_WM_SAGV(pipe, plane_id)); | 
|---|
| 3039 | else | 
|---|
| 3040 | val = intel_de_read(display, CUR_WM_SAGV(pipe)); | 
|---|
| 3041 |  | 
|---|
| 3042 | skl_wm_level_from_reg_val(display, val, level: &wm->sagv.wm0); | 
|---|
| 3043 |  | 
|---|
| 3044 | if (plane_id != PLANE_CURSOR) | 
|---|
| 3045 | val = intel_de_read(display, PLANE_WM_SAGV_TRANS(pipe, plane_id)); | 
|---|
| 3046 | else | 
|---|
| 3047 | val = intel_de_read(display, CUR_WM_SAGV_TRANS(pipe)); | 
|---|
| 3048 |  | 
|---|
| 3049 | skl_wm_level_from_reg_val(display, val, level: &wm->sagv.trans_wm); | 
|---|
| 3050 | } else if (DISPLAY_VER(display) >= 12) { | 
|---|
| 3051 | wm->sagv.wm0 = wm->wm[0]; | 
|---|
| 3052 | wm->sagv.trans_wm = wm->trans_wm; | 
|---|
| 3053 | } | 
|---|
| 3054 | } | 
|---|
| 3055 | } | 
|---|
| 3056 |  | 
|---|
| 3057 | static void skl_wm_get_hw_state(struct intel_display *display) | 
|---|
| 3058 | { | 
|---|
| 3059 | struct intel_dbuf_state *dbuf_state = | 
|---|
| 3060 | to_intel_dbuf_state(display->dbuf.obj.state); | 
|---|
| 3061 | struct intel_crtc *crtc; | 
|---|
| 3062 |  | 
|---|
| 3063 | if (HAS_MBUS_JOINING(display)) | 
|---|
| 3064 | dbuf_state->joined_mbus = intel_de_read(display, MBUS_CTL) & MBUS_JOIN; | 
|---|
| 3065 |  | 
|---|
| 3066 | dbuf_state->mdclk_cdclk_ratio = intel_mdclk_cdclk_ratio(display, cdclk_config: &display->cdclk.hw); | 
|---|
| 3067 | dbuf_state->active_pipes = 0; | 
|---|
| 3068 |  | 
|---|
| 3069 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 3070 | struct intel_crtc_state *crtc_state = | 
|---|
| 3071 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3072 | enum pipe pipe = crtc->pipe; | 
|---|
| 3073 | unsigned int mbus_offset; | 
|---|
| 3074 | enum plane_id plane_id; | 
|---|
| 3075 | u8 slices; | 
|---|
| 3076 |  | 
|---|
| 3077 | memset(s: &crtc_state->wm.skl.optimal, c: 0, | 
|---|
| 3078 | n: sizeof(crtc_state->wm.skl.optimal)); | 
|---|
| 3079 | if (crtc_state->hw.active) { | 
|---|
| 3080 | skl_pipe_wm_get_hw_state(crtc, out: &crtc_state->wm.skl.optimal); | 
|---|
| 3081 | dbuf_state->active_pipes |= BIT(pipe); | 
|---|
| 3082 | } | 
|---|
| 3083 | crtc_state->wm.skl.raw = crtc_state->wm.skl.optimal; | 
|---|
| 3084 |  | 
|---|
| 3085 | memset(s: &dbuf_state->ddb[pipe], c: 0, n: sizeof(dbuf_state->ddb[pipe])); | 
|---|
| 3086 |  | 
|---|
| 3087 | for_each_plane_id_on_crtc(crtc, plane_id) { | 
|---|
| 3088 | struct skl_ddb_entry *ddb = | 
|---|
| 3089 | &crtc_state->wm.skl.plane_ddb[plane_id]; | 
|---|
| 3090 | struct skl_ddb_entry *ddb_y = | 
|---|
| 3091 | &crtc_state->wm.skl.plane_ddb_y[plane_id]; | 
|---|
| 3092 | u16 *min_ddb = | 
|---|
| 3093 | &crtc_state->wm.skl.plane_min_ddb[plane_id]; | 
|---|
| 3094 | u16 *interim_ddb = | 
|---|
| 3095 | &crtc_state->wm.skl.plane_interim_ddb[plane_id]; | 
|---|
| 3096 |  | 
|---|
| 3097 | if (!crtc_state->hw.active) | 
|---|
| 3098 | continue; | 
|---|
| 3099 |  | 
|---|
| 3100 | skl_ddb_get_hw_plane_state(display, pipe: crtc->pipe, | 
|---|
| 3101 | plane_id, ddb, ddb_y, | 
|---|
| 3102 | min_ddb, interim_ddb); | 
|---|
| 3103 |  | 
|---|
| 3104 | skl_ddb_entry_union(a: &dbuf_state->ddb[pipe], b: ddb); | 
|---|
| 3105 | skl_ddb_entry_union(a: &dbuf_state->ddb[pipe], b: ddb_y); | 
|---|
| 3106 | } | 
|---|
| 3107 |  | 
|---|
| 3108 | dbuf_state->weight[pipe] = intel_crtc_ddb_weight(crtc_state); | 
|---|
| 3109 |  | 
|---|
| 3110 | /* | 
|---|
| 3111 | * Used for checking overlaps, so we need absolute | 
|---|
| 3112 | * offsets instead of MBUS relative offsets. | 
|---|
| 3113 | */ | 
|---|
| 3114 | slices = skl_compute_dbuf_slices(crtc, active_pipes: dbuf_state->active_pipes, | 
|---|
| 3115 | join_mbus: dbuf_state->joined_mbus); | 
|---|
| 3116 | mbus_offset = mbus_ddb_offset(display, slice_mask: slices); | 
|---|
| 3117 | crtc_state->wm.skl.ddb.start = mbus_offset + dbuf_state->ddb[pipe].start; | 
|---|
| 3118 | crtc_state->wm.skl.ddb.end = mbus_offset + dbuf_state->ddb[pipe].end; | 
|---|
| 3119 |  | 
|---|
| 3120 | /* The slices actually used by the planes on the pipe */ | 
|---|
| 3121 | dbuf_state->slices[pipe] = | 
|---|
| 3122 | skl_ddb_dbuf_slice_mask(display, entry: &crtc_state->wm.skl.ddb); | 
|---|
| 3123 |  | 
|---|
| 3124 | drm_dbg_kms(display->drm, | 
|---|
| 3125 | "[CRTC:%d:%s] dbuf slices 0x%x, ddb (%d - %d), active pipes 0x%x, mbus joined: %s\n", | 
|---|
| 3126 | crtc->base.base.id, crtc->base.name, | 
|---|
| 3127 | dbuf_state->slices[pipe], dbuf_state->ddb[pipe].start, | 
|---|
| 3128 | dbuf_state->ddb[pipe].end, dbuf_state->active_pipes, | 
|---|
| 3129 | str_yes_no(dbuf_state->joined_mbus)); | 
|---|
| 3130 | } | 
|---|
| 3131 |  | 
|---|
| 3132 | dbuf_state->enabled_slices = display->dbuf.enabled_slices; | 
|---|
| 3133 | } | 
|---|
| 3134 |  | 
|---|
| 3135 | bool skl_watermark_ipc_enabled(struct intel_display *display) | 
|---|
| 3136 | { | 
|---|
| 3137 | return display->wm.ipc_enabled; | 
|---|
| 3138 | } | 
|---|
| 3139 |  | 
|---|
| 3140 | void skl_watermark_ipc_update(struct intel_display *display) | 
|---|
| 3141 | { | 
|---|
| 3142 | if (!HAS_IPC(display)) | 
|---|
| 3143 | return; | 
|---|
| 3144 |  | 
|---|
| 3145 | intel_de_rmw(display, DISP_ARB_CTL2, DISP_IPC_ENABLE, | 
|---|
| 3146 | set: skl_watermark_ipc_enabled(display) ? DISP_IPC_ENABLE : 0); | 
|---|
| 3147 | } | 
|---|
| 3148 |  | 
|---|
| 3149 | static bool skl_watermark_ipc_can_enable(struct intel_display *display) | 
|---|
| 3150 | { | 
|---|
| 3151 | /* Display WA #0477 WaDisableIPC: skl */ | 
|---|
| 3152 | if (display->platform.skylake) | 
|---|
| 3153 | return false; | 
|---|
| 3154 |  | 
|---|
| 3155 | /* Display WA #1141: SKL:all KBL:all CFL */ | 
|---|
| 3156 | if (display->platform.kabylake || | 
|---|
| 3157 | display->platform.coffeelake || | 
|---|
| 3158 | display->platform.cometlake) { | 
|---|
| 3159 | const struct dram_info *dram_info = intel_dram_info(drm: display->drm); | 
|---|
| 3160 |  | 
|---|
| 3161 | return dram_info->symmetric_memory; | 
|---|
| 3162 | } | 
|---|
| 3163 |  | 
|---|
| 3164 | return true; | 
|---|
| 3165 | } | 
|---|
| 3166 |  | 
|---|
| 3167 | void skl_watermark_ipc_init(struct intel_display *display) | 
|---|
| 3168 | { | 
|---|
| 3169 | if (!HAS_IPC(display)) | 
|---|
| 3170 | return; | 
|---|
| 3171 |  | 
|---|
| 3172 | display->wm.ipc_enabled = skl_watermark_ipc_can_enable(display); | 
|---|
| 3173 |  | 
|---|
| 3174 | skl_watermark_ipc_update(display); | 
|---|
| 3175 | } | 
|---|
| 3176 |  | 
|---|
| 3177 | static void | 
|---|
| 3178 | adjust_wm_latency(struct intel_display *display, | 
|---|
| 3179 | u16 wm[], int num_levels, int read_latency) | 
|---|
| 3180 | { | 
|---|
| 3181 | const struct dram_info *dram_info = intel_dram_info(drm: display->drm); | 
|---|
| 3182 | int i, level; | 
|---|
| 3183 |  | 
|---|
| 3184 | /* | 
|---|
| 3185 | * If a level n (n > 1) has a 0us latency, all levels m (m >= n) | 
|---|
| 3186 | * need to be disabled. We make sure to sanitize the values out | 
|---|
| 3187 | * of the punit to satisfy this requirement. | 
|---|
| 3188 | */ | 
|---|
| 3189 | for (level = 1; level < num_levels; level++) { | 
|---|
| 3190 | if (wm[level] == 0) { | 
|---|
| 3191 | for (i = level + 1; i < num_levels; i++) | 
|---|
| 3192 | wm[i] = 0; | 
|---|
| 3193 |  | 
|---|
| 3194 | num_levels = level; | 
|---|
| 3195 | break; | 
|---|
| 3196 | } | 
|---|
| 3197 | } | 
|---|
| 3198 |  | 
|---|
| 3199 | /* | 
|---|
| 3200 | * WaWmMemoryReadLatency | 
|---|
| 3201 | * | 
|---|
| 3202 | * punit doesn't take into account the read latency so we need | 
|---|
| 3203 | * to add proper adjustment to each valid level we retrieve | 
|---|
| 3204 | * from the punit when level 0 response data is 0us. | 
|---|
| 3205 | */ | 
|---|
| 3206 | if (wm[0] == 0) { | 
|---|
| 3207 | for (level = 0; level < num_levels; level++) | 
|---|
| 3208 | wm[level] += read_latency; | 
|---|
| 3209 | } | 
|---|
| 3210 |  | 
|---|
| 3211 | /* | 
|---|
| 3212 | * WA Level-0 adjustment for 16Gb DIMMs: SKL+ | 
|---|
| 3213 | * If we could not get dimm info enable this WA to prevent from | 
|---|
| 3214 | * any underrun. If not able to get DIMM info assume 16Gb DIMM | 
|---|
| 3215 | * to avoid any underrun. | 
|---|
| 3216 | */ | 
|---|
| 3217 | if (!display->platform.dg2 && dram_info->has_16gb_dimms) | 
|---|
| 3218 | wm[0] += 1; | 
|---|
| 3219 | } | 
|---|
| 3220 |  | 
|---|
| 3221 | static void mtl_read_wm_latency(struct intel_display *display, u16 wm[]) | 
|---|
| 3222 | { | 
|---|
| 3223 | int num_levels = display->wm.num_levels; | 
|---|
| 3224 | u32 val; | 
|---|
| 3225 |  | 
|---|
| 3226 | val = intel_de_read(display, MTL_LATENCY_LP0_LP1); | 
|---|
| 3227 | wm[0] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); | 
|---|
| 3228 | wm[1] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); | 
|---|
| 3229 |  | 
|---|
| 3230 | val = intel_de_read(display, MTL_LATENCY_LP2_LP3); | 
|---|
| 3231 | wm[2] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); | 
|---|
| 3232 | wm[3] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); | 
|---|
| 3233 |  | 
|---|
| 3234 | val = intel_de_read(display, MTL_LATENCY_LP4_LP5); | 
|---|
| 3235 | wm[4] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); | 
|---|
| 3236 | wm[5] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); | 
|---|
| 3237 |  | 
|---|
| 3238 | adjust_wm_latency(display, wm, num_levels, read_latency: 6); | 
|---|
| 3239 | } | 
|---|
| 3240 |  | 
|---|
| 3241 | static void skl_read_wm_latency(struct intel_display *display, u16 wm[]) | 
|---|
| 3242 | { | 
|---|
| 3243 | int num_levels = display->wm.num_levels; | 
|---|
| 3244 | int read_latency = DISPLAY_VER(display) >= 12 ? 3 : 2; | 
|---|
| 3245 | int mult = display->platform.dg2 ? 2 : 1; | 
|---|
| 3246 | u32 val; | 
|---|
| 3247 | int ret; | 
|---|
| 3248 |  | 
|---|
| 3249 | /* read the first set of memory latencies[0:3] */ | 
|---|
| 3250 | val = 0; /* data0 to be programmed to 0 for first set */ | 
|---|
| 3251 | ret = intel_pcode_read(drm: display->drm, GEN9_PCODE_READ_MEM_LATENCY, val: &val, NULL); | 
|---|
| 3252 | if (ret) { | 
|---|
| 3253 | drm_err(display->drm, "SKL Mailbox read error = %d\n", ret); | 
|---|
| 3254 | return; | 
|---|
| 3255 | } | 
|---|
| 3256 |  | 
|---|
| 3257 | wm[0] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_0_4_MASK, val) * mult; | 
|---|
| 3258 | wm[1] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_1_5_MASK, val) * mult; | 
|---|
| 3259 | wm[2] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_2_6_MASK, val) * mult; | 
|---|
| 3260 | wm[3] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_3_7_MASK, val) * mult; | 
|---|
| 3261 |  | 
|---|
| 3262 | /* read the second set of memory latencies[4:7] */ | 
|---|
| 3263 | val = 1; /* data0 to be programmed to 1 for second set */ | 
|---|
| 3264 | ret = intel_pcode_read(drm: display->drm, GEN9_PCODE_READ_MEM_LATENCY, val: &val, NULL); | 
|---|
| 3265 | if (ret) { | 
|---|
| 3266 | drm_err(display->drm, "SKL Mailbox read error = %d\n", ret); | 
|---|
| 3267 | return; | 
|---|
| 3268 | } | 
|---|
| 3269 |  | 
|---|
| 3270 | wm[4] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_0_4_MASK, val) * mult; | 
|---|
| 3271 | wm[5] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_1_5_MASK, val) * mult; | 
|---|
| 3272 | wm[6] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_2_6_MASK, val) * mult; | 
|---|
| 3273 | wm[7] = REG_FIELD_GET(GEN9_MEM_LATENCY_LEVEL_3_7_MASK, val) * mult; | 
|---|
| 3274 |  | 
|---|
| 3275 | adjust_wm_latency(display, wm, num_levels, read_latency); | 
|---|
| 3276 | } | 
|---|
| 3277 |  | 
|---|
| 3278 | static void skl_setup_wm_latency(struct intel_display *display) | 
|---|
| 3279 | { | 
|---|
| 3280 | if (HAS_HW_SAGV_WM(display)) | 
|---|
| 3281 | display->wm.num_levels = 6; | 
|---|
| 3282 | else | 
|---|
| 3283 | display->wm.num_levels = 8; | 
|---|
| 3284 |  | 
|---|
| 3285 | if (DISPLAY_VER(display) >= 14) | 
|---|
| 3286 | mtl_read_wm_latency(display, wm: display->wm.skl_latency); | 
|---|
| 3287 | else | 
|---|
| 3288 | skl_read_wm_latency(display, wm: display->wm.skl_latency); | 
|---|
| 3289 |  | 
|---|
| 3290 | intel_print_wm_latency(display, name: "Gen9 Plane", wm: display->wm.skl_latency); | 
|---|
| 3291 | } | 
|---|
| 3292 |  | 
|---|
| 3293 | static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj) | 
|---|
| 3294 | { | 
|---|
| 3295 | struct intel_dbuf_state *dbuf_state; | 
|---|
| 3296 |  | 
|---|
| 3297 | dbuf_state = kmemdup(obj->state, sizeof(*dbuf_state), GFP_KERNEL); | 
|---|
| 3298 | if (!dbuf_state) | 
|---|
| 3299 | return NULL; | 
|---|
| 3300 |  | 
|---|
| 3301 | return &dbuf_state->base; | 
|---|
| 3302 | } | 
|---|
| 3303 |  | 
|---|
| 3304 | static void intel_dbuf_destroy_state(struct intel_global_obj *obj, | 
|---|
| 3305 | struct intel_global_state *state) | 
|---|
| 3306 | { | 
|---|
| 3307 | kfree(objp: state); | 
|---|
| 3308 | } | 
|---|
| 3309 |  | 
|---|
| 3310 | static const struct intel_global_state_funcs intel_dbuf_funcs = { | 
|---|
| 3311 | .atomic_duplicate_state = intel_dbuf_duplicate_state, | 
|---|
| 3312 | .atomic_destroy_state = intel_dbuf_destroy_state, | 
|---|
| 3313 | }; | 
|---|
| 3314 |  | 
|---|
| 3315 | struct intel_dbuf_state * | 
|---|
| 3316 | intel_atomic_get_dbuf_state(struct intel_atomic_state *state) | 
|---|
| 3317 | { | 
|---|
| 3318 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3319 | struct intel_global_state *dbuf_state; | 
|---|
| 3320 |  | 
|---|
| 3321 | dbuf_state = intel_atomic_get_global_obj_state(state, obj: &display->dbuf.obj); | 
|---|
| 3322 | if (IS_ERR(ptr: dbuf_state)) | 
|---|
| 3323 | return ERR_CAST(ptr: dbuf_state); | 
|---|
| 3324 |  | 
|---|
| 3325 | return to_intel_dbuf_state(dbuf_state); | 
|---|
| 3326 | } | 
|---|
| 3327 |  | 
|---|
| 3328 | int intel_dbuf_init(struct intel_display *display) | 
|---|
| 3329 | { | 
|---|
| 3330 | struct intel_dbuf_state *dbuf_state; | 
|---|
| 3331 |  | 
|---|
| 3332 | dbuf_state = kzalloc(sizeof(*dbuf_state), GFP_KERNEL); | 
|---|
| 3333 | if (!dbuf_state) | 
|---|
| 3334 | return -ENOMEM; | 
|---|
| 3335 |  | 
|---|
| 3336 | intel_atomic_global_obj_init(display, obj: &display->dbuf.obj, | 
|---|
| 3337 | state: &dbuf_state->base, funcs: &intel_dbuf_funcs); | 
|---|
| 3338 |  | 
|---|
| 3339 | return 0; | 
|---|
| 3340 | } | 
|---|
| 3341 |  | 
|---|
| 3342 | static bool xelpdp_is_only_pipe_per_dbuf_bank(enum pipe pipe, u8 active_pipes) | 
|---|
| 3343 | { | 
|---|
| 3344 | switch (pipe) { | 
|---|
| 3345 | case PIPE_A: | 
|---|
| 3346 | case PIPE_D: | 
|---|
| 3347 | active_pipes &= BIT(PIPE_A) | BIT(PIPE_D); | 
|---|
| 3348 | break; | 
|---|
| 3349 | case PIPE_B: | 
|---|
| 3350 | case PIPE_C: | 
|---|
| 3351 | active_pipes &= BIT(PIPE_B) | BIT(PIPE_C); | 
|---|
| 3352 | break; | 
|---|
| 3353 | default: /* to suppress compiler warning */ | 
|---|
| 3354 | MISSING_CASE(pipe); | 
|---|
| 3355 | return false; | 
|---|
| 3356 | } | 
|---|
| 3357 |  | 
|---|
| 3358 | return is_power_of_2(n: active_pipes); | 
|---|
| 3359 | } | 
|---|
| 3360 |  | 
|---|
| 3361 | static u32 pipe_mbus_dbox_ctl(const struct intel_crtc *crtc, | 
|---|
| 3362 | const struct intel_dbuf_state *dbuf_state) | 
|---|
| 3363 | { | 
|---|
| 3364 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 3365 | u32 val = 0; | 
|---|
| 3366 |  | 
|---|
| 3367 | if (DISPLAY_VER(display) >= 14) | 
|---|
| 3368 | val |= MBUS_DBOX_I_CREDIT(2); | 
|---|
| 3369 |  | 
|---|
| 3370 | if (DISPLAY_VER(display) >= 12) { | 
|---|
| 3371 | val |= MBUS_DBOX_B2B_TRANSACTIONS_MAX(16); | 
|---|
| 3372 | val |= MBUS_DBOX_B2B_TRANSACTIONS_DELAY(1); | 
|---|
| 3373 | val |= MBUS_DBOX_REGULATE_B2B_TRANSACTIONS_EN; | 
|---|
| 3374 | } | 
|---|
| 3375 |  | 
|---|
| 3376 | if (DISPLAY_VER(display) >= 14) | 
|---|
| 3377 | val |= dbuf_state->joined_mbus ? | 
|---|
| 3378 | MBUS_DBOX_A_CREDIT(12) : MBUS_DBOX_A_CREDIT(8); | 
|---|
| 3379 | else if (display->platform.alderlake_p) | 
|---|
| 3380 | /* Wa_22010947358:adl-p */ | 
|---|
| 3381 | val |= dbuf_state->joined_mbus ? | 
|---|
| 3382 | MBUS_DBOX_A_CREDIT(6) : MBUS_DBOX_A_CREDIT(4); | 
|---|
| 3383 | else | 
|---|
| 3384 | val |= MBUS_DBOX_A_CREDIT(2); | 
|---|
| 3385 |  | 
|---|
| 3386 | if (DISPLAY_VER(display) >= 14) { | 
|---|
| 3387 | val |= MBUS_DBOX_B_CREDIT(0xA); | 
|---|
| 3388 | } else if (display->platform.alderlake_p) { | 
|---|
| 3389 | val |= MBUS_DBOX_BW_CREDIT(2); | 
|---|
| 3390 | val |= MBUS_DBOX_B_CREDIT(8); | 
|---|
| 3391 | } else if (DISPLAY_VER(display) >= 12) { | 
|---|
| 3392 | val |= MBUS_DBOX_BW_CREDIT(2); | 
|---|
| 3393 | val |= MBUS_DBOX_B_CREDIT(12); | 
|---|
| 3394 | } else { | 
|---|
| 3395 | val |= MBUS_DBOX_BW_CREDIT(1); | 
|---|
| 3396 | val |= MBUS_DBOX_B_CREDIT(8); | 
|---|
| 3397 | } | 
|---|
| 3398 |  | 
|---|
| 3399 | if (DISPLAY_VERx100(display) == 1400) { | 
|---|
| 3400 | if (xelpdp_is_only_pipe_per_dbuf_bank(pipe: crtc->pipe, active_pipes: dbuf_state->active_pipes)) | 
|---|
| 3401 | val |= MBUS_DBOX_BW_8CREDITS_MTL; | 
|---|
| 3402 | else | 
|---|
| 3403 | val |= MBUS_DBOX_BW_4CREDITS_MTL; | 
|---|
| 3404 | } | 
|---|
| 3405 |  | 
|---|
| 3406 | return val; | 
|---|
| 3407 | } | 
|---|
| 3408 |  | 
|---|
| 3409 | static void pipe_mbus_dbox_ctl_update(struct intel_display *display, | 
|---|
| 3410 | const struct intel_dbuf_state *dbuf_state) | 
|---|
| 3411 | { | 
|---|
| 3412 | struct intel_crtc *crtc; | 
|---|
| 3413 |  | 
|---|
| 3414 | for_each_intel_crtc_in_pipe_mask(display->drm, crtc, dbuf_state->active_pipes) | 
|---|
| 3415 | intel_de_write(display, PIPE_MBUS_DBOX_CTL(crtc->pipe), | 
|---|
| 3416 | val: pipe_mbus_dbox_ctl(crtc, dbuf_state)); | 
|---|
| 3417 | } | 
|---|
| 3418 |  | 
|---|
| 3419 | static void intel_mbus_dbox_update(struct intel_atomic_state *state) | 
|---|
| 3420 | { | 
|---|
| 3421 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3422 | const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state; | 
|---|
| 3423 |  | 
|---|
| 3424 | if (DISPLAY_VER(display) < 11) | 
|---|
| 3425 | return; | 
|---|
| 3426 |  | 
|---|
| 3427 | new_dbuf_state = intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3428 | old_dbuf_state = intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3429 | if (!new_dbuf_state || | 
|---|
| 3430 | (new_dbuf_state->joined_mbus == old_dbuf_state->joined_mbus && | 
|---|
| 3431 | new_dbuf_state->active_pipes == old_dbuf_state->active_pipes)) | 
|---|
| 3432 | return; | 
|---|
| 3433 |  | 
|---|
| 3434 | pipe_mbus_dbox_ctl_update(display, dbuf_state: new_dbuf_state); | 
|---|
| 3435 | } | 
|---|
| 3436 |  | 
|---|
| 3437 | int intel_dbuf_state_set_mdclk_cdclk_ratio(struct intel_atomic_state *state, | 
|---|
| 3438 | int ratio) | 
|---|
| 3439 | { | 
|---|
| 3440 | struct intel_dbuf_state *dbuf_state; | 
|---|
| 3441 |  | 
|---|
| 3442 | dbuf_state = intel_atomic_get_dbuf_state(state); | 
|---|
| 3443 | if (IS_ERR(ptr: dbuf_state)) | 
|---|
| 3444 | return PTR_ERR(ptr: dbuf_state); | 
|---|
| 3445 |  | 
|---|
| 3446 | dbuf_state->mdclk_cdclk_ratio = ratio; | 
|---|
| 3447 |  | 
|---|
| 3448 | return intel_atomic_lock_global_state(obj_state: &dbuf_state->base); | 
|---|
| 3449 | } | 
|---|
| 3450 |  | 
|---|
| 3451 | void intel_dbuf_mdclk_cdclk_ratio_update(struct intel_display *display, | 
|---|
| 3452 | int ratio, bool joined_mbus) | 
|---|
| 3453 | { | 
|---|
| 3454 | enum dbuf_slice slice; | 
|---|
| 3455 |  | 
|---|
| 3456 | if (!HAS_MBUS_JOINING(display)) | 
|---|
| 3457 | return; | 
|---|
| 3458 |  | 
|---|
| 3459 | if (DISPLAY_VER(display) >= 20) | 
|---|
| 3460 | intel_de_rmw(display, MBUS_CTL, MBUS_TRANSLATION_THROTTLE_MIN_MASK, | 
|---|
| 3461 | MBUS_TRANSLATION_THROTTLE_MIN(ratio - 1)); | 
|---|
| 3462 |  | 
|---|
| 3463 | if (joined_mbus) | 
|---|
| 3464 | ratio *= 2; | 
|---|
| 3465 |  | 
|---|
| 3466 | drm_dbg_kms(display->drm, "Updating dbuf ratio to %d (mbus joined: %s)\n", | 
|---|
| 3467 | ratio, str_yes_no(joined_mbus)); | 
|---|
| 3468 |  | 
|---|
| 3469 | for_each_dbuf_slice(display, slice) | 
|---|
| 3470 | intel_de_rmw(display, DBUF_CTL_S(slice), | 
|---|
| 3471 | DBUF_MIN_TRACKER_STATE_SERVICE_MASK, | 
|---|
| 3472 | DBUF_MIN_TRACKER_STATE_SERVICE(ratio - 1)); | 
|---|
| 3473 | } | 
|---|
| 3474 |  | 
|---|
| 3475 | static void intel_dbuf_mdclk_min_tracker_update(struct intel_atomic_state *state) | 
|---|
| 3476 | { | 
|---|
| 3477 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3478 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3479 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3480 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3481 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3482 | int mdclk_cdclk_ratio; | 
|---|
| 3483 |  | 
|---|
| 3484 | if (intel_cdclk_is_decreasing_later(state)) { | 
|---|
| 3485 | /* cdclk/mdclk will be changed later by intel_set_cdclk_post_plane_update() */ | 
|---|
| 3486 | mdclk_cdclk_ratio = old_dbuf_state->mdclk_cdclk_ratio; | 
|---|
| 3487 | } else { | 
|---|
| 3488 | /* cdclk/mdclk already changed by intel_set_cdclk_pre_plane_update() */ | 
|---|
| 3489 | mdclk_cdclk_ratio = new_dbuf_state->mdclk_cdclk_ratio; | 
|---|
| 3490 | } | 
|---|
| 3491 |  | 
|---|
| 3492 | intel_dbuf_mdclk_cdclk_ratio_update(display, ratio: mdclk_cdclk_ratio, | 
|---|
| 3493 | joined_mbus: new_dbuf_state->joined_mbus); | 
|---|
| 3494 | } | 
|---|
| 3495 |  | 
|---|
| 3496 | static enum pipe intel_mbus_joined_pipe(struct intel_atomic_state *state, | 
|---|
| 3497 | const struct intel_dbuf_state *dbuf_state) | 
|---|
| 3498 | { | 
|---|
| 3499 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3500 | enum pipe pipe = ffs(dbuf_state->active_pipes) - 1; | 
|---|
| 3501 | const struct intel_crtc_state *new_crtc_state; | 
|---|
| 3502 | struct intel_crtc *crtc; | 
|---|
| 3503 |  | 
|---|
| 3504 | drm_WARN_ON(display->drm, !dbuf_state->joined_mbus); | 
|---|
| 3505 | drm_WARN_ON(display->drm, !is_power_of_2(dbuf_state->active_pipes)); | 
|---|
| 3506 |  | 
|---|
| 3507 | crtc = intel_crtc_for_pipe(display, pipe); | 
|---|
| 3508 | new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 3509 |  | 
|---|
| 3510 | if (new_crtc_state && !intel_crtc_needs_modeset(crtc_state: new_crtc_state)) | 
|---|
| 3511 | return pipe; | 
|---|
| 3512 | else | 
|---|
| 3513 | return INVALID_PIPE; | 
|---|
| 3514 | } | 
|---|
| 3515 |  | 
|---|
| 3516 | static void mbus_ctl_join_update(struct intel_display *display, | 
|---|
| 3517 | const struct intel_dbuf_state *dbuf_state, | 
|---|
| 3518 | enum pipe pipe) | 
|---|
| 3519 | { | 
|---|
| 3520 | u32 mbus_ctl; | 
|---|
| 3521 |  | 
|---|
| 3522 | if (dbuf_state->joined_mbus) | 
|---|
| 3523 | mbus_ctl = MBUS_HASHING_MODE_1x4 | MBUS_JOIN; | 
|---|
| 3524 | else | 
|---|
| 3525 | mbus_ctl = MBUS_HASHING_MODE_2x2; | 
|---|
| 3526 |  | 
|---|
| 3527 | if (pipe != INVALID_PIPE) | 
|---|
| 3528 | mbus_ctl |= MBUS_JOIN_PIPE_SELECT(pipe); | 
|---|
| 3529 | else | 
|---|
| 3530 | mbus_ctl |= MBUS_JOIN_PIPE_SELECT_NONE; | 
|---|
| 3531 |  | 
|---|
| 3532 | intel_de_rmw(display, MBUS_CTL, | 
|---|
| 3533 | MBUS_HASHING_MODE_MASK | MBUS_JOIN | | 
|---|
| 3534 | MBUS_JOIN_PIPE_SELECT_MASK, set: mbus_ctl); | 
|---|
| 3535 | } | 
|---|
| 3536 |  | 
|---|
| 3537 | static void intel_dbuf_mbus_join_update(struct intel_atomic_state *state, | 
|---|
| 3538 | enum pipe pipe) | 
|---|
| 3539 | { | 
|---|
| 3540 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3541 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3542 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3543 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3544 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3545 |  | 
|---|
| 3546 | drm_dbg_kms(display->drm, "Changing mbus joined: %s -> %s (pipe: %c)\n", | 
|---|
| 3547 | str_yes_no(old_dbuf_state->joined_mbus), | 
|---|
| 3548 | str_yes_no(new_dbuf_state->joined_mbus), | 
|---|
| 3549 | pipe != INVALID_PIPE ? pipe_name(pipe) : '*'); | 
|---|
| 3550 |  | 
|---|
| 3551 | mbus_ctl_join_update(display, dbuf_state: new_dbuf_state, pipe); | 
|---|
| 3552 | } | 
|---|
| 3553 |  | 
|---|
| 3554 | void intel_dbuf_mbus_pre_ddb_update(struct intel_atomic_state *state) | 
|---|
| 3555 | { | 
|---|
| 3556 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3557 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3558 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3559 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3560 |  | 
|---|
| 3561 | if (!new_dbuf_state) | 
|---|
| 3562 | return; | 
|---|
| 3563 |  | 
|---|
| 3564 | if (!old_dbuf_state->joined_mbus && new_dbuf_state->joined_mbus) { | 
|---|
| 3565 | enum pipe pipe = intel_mbus_joined_pipe(state, dbuf_state: new_dbuf_state); | 
|---|
| 3566 |  | 
|---|
| 3567 | WARN_ON(!new_dbuf_state->base.changed); | 
|---|
| 3568 |  | 
|---|
| 3569 | intel_dbuf_mbus_join_update(state, pipe); | 
|---|
| 3570 | intel_mbus_dbox_update(state); | 
|---|
| 3571 | intel_dbuf_mdclk_min_tracker_update(state); | 
|---|
| 3572 | } | 
|---|
| 3573 | } | 
|---|
| 3574 |  | 
|---|
| 3575 | void intel_dbuf_mbus_post_ddb_update(struct intel_atomic_state *state) | 
|---|
| 3576 | { | 
|---|
| 3577 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3578 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3579 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3580 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3581 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3582 |  | 
|---|
| 3583 | if (!new_dbuf_state) | 
|---|
| 3584 | return; | 
|---|
| 3585 |  | 
|---|
| 3586 | if (old_dbuf_state->joined_mbus && !new_dbuf_state->joined_mbus) { | 
|---|
| 3587 | enum pipe pipe = intel_mbus_joined_pipe(state, dbuf_state: old_dbuf_state); | 
|---|
| 3588 |  | 
|---|
| 3589 | WARN_ON(!new_dbuf_state->base.changed); | 
|---|
| 3590 |  | 
|---|
| 3591 | intel_dbuf_mdclk_min_tracker_update(state); | 
|---|
| 3592 | intel_mbus_dbox_update(state); | 
|---|
| 3593 | intel_dbuf_mbus_join_update(state, pipe); | 
|---|
| 3594 |  | 
|---|
| 3595 | if (pipe != INVALID_PIPE) { | 
|---|
| 3596 | struct intel_crtc *crtc = intel_crtc_for_pipe(display, pipe); | 
|---|
| 3597 |  | 
|---|
| 3598 | intel_crtc_wait_for_next_vblank(crtc); | 
|---|
| 3599 | } | 
|---|
| 3600 | } else if (old_dbuf_state->joined_mbus == new_dbuf_state->joined_mbus && | 
|---|
| 3601 | old_dbuf_state->active_pipes != new_dbuf_state->active_pipes) { | 
|---|
| 3602 | WARN_ON(!new_dbuf_state->base.changed); | 
|---|
| 3603 |  | 
|---|
| 3604 | intel_dbuf_mdclk_min_tracker_update(state); | 
|---|
| 3605 | intel_mbus_dbox_update(state); | 
|---|
| 3606 | } | 
|---|
| 3607 |  | 
|---|
| 3608 | } | 
|---|
| 3609 |  | 
|---|
| 3610 | void intel_dbuf_pre_plane_update(struct intel_atomic_state *state) | 
|---|
| 3611 | { | 
|---|
| 3612 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3613 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3614 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3615 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3616 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3617 | u8 old_slices, new_slices; | 
|---|
| 3618 |  | 
|---|
| 3619 | if (!new_dbuf_state) | 
|---|
| 3620 | return; | 
|---|
| 3621 |  | 
|---|
| 3622 | old_slices = old_dbuf_state->enabled_slices; | 
|---|
| 3623 | new_slices = old_dbuf_state->enabled_slices | new_dbuf_state->enabled_slices; | 
|---|
| 3624 |  | 
|---|
| 3625 | if (old_slices == new_slices) | 
|---|
| 3626 | return; | 
|---|
| 3627 |  | 
|---|
| 3628 | WARN_ON(!new_dbuf_state->base.changed); | 
|---|
| 3629 |  | 
|---|
| 3630 | gen9_dbuf_slices_update(display, req_slices: new_slices); | 
|---|
| 3631 | } | 
|---|
| 3632 |  | 
|---|
| 3633 | void intel_dbuf_post_plane_update(struct intel_atomic_state *state) | 
|---|
| 3634 | { | 
|---|
| 3635 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3636 | const struct intel_dbuf_state *new_dbuf_state = | 
|---|
| 3637 | intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3638 | const struct intel_dbuf_state *old_dbuf_state = | 
|---|
| 3639 | intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3640 | u8 old_slices, new_slices; | 
|---|
| 3641 |  | 
|---|
| 3642 | if (!new_dbuf_state) | 
|---|
| 3643 | return; | 
|---|
| 3644 |  | 
|---|
| 3645 | old_slices = old_dbuf_state->enabled_slices | new_dbuf_state->enabled_slices; | 
|---|
| 3646 | new_slices = new_dbuf_state->enabled_slices; | 
|---|
| 3647 |  | 
|---|
| 3648 | if (old_slices == new_slices) | 
|---|
| 3649 | return; | 
|---|
| 3650 |  | 
|---|
| 3651 | WARN_ON(!new_dbuf_state->base.changed); | 
|---|
| 3652 |  | 
|---|
| 3653 | gen9_dbuf_slices_update(display, req_slices: new_slices); | 
|---|
| 3654 | } | 
|---|
| 3655 |  | 
|---|
| 3656 | int intel_dbuf_num_enabled_slices(const struct intel_dbuf_state *dbuf_state) | 
|---|
| 3657 | { | 
|---|
| 3658 | return hweight8(dbuf_state->enabled_slices); | 
|---|
| 3659 | } | 
|---|
| 3660 |  | 
|---|
| 3661 | int intel_dbuf_num_active_pipes(const struct intel_dbuf_state *dbuf_state) | 
|---|
| 3662 | { | 
|---|
| 3663 | return hweight8(dbuf_state->active_pipes); | 
|---|
| 3664 | } | 
|---|
| 3665 |  | 
|---|
| 3666 | bool intel_dbuf_pmdemand_needs_update(struct intel_atomic_state *state) | 
|---|
| 3667 | { | 
|---|
| 3668 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3669 | const struct intel_dbuf_state *new_dbuf_state, *old_dbuf_state; | 
|---|
| 3670 |  | 
|---|
| 3671 | new_dbuf_state = intel_atomic_get_new_dbuf_state(state); | 
|---|
| 3672 | old_dbuf_state = intel_atomic_get_old_dbuf_state(state); | 
|---|
| 3673 |  | 
|---|
| 3674 | if (new_dbuf_state && | 
|---|
| 3675 | new_dbuf_state->active_pipes != old_dbuf_state->active_pipes) | 
|---|
| 3676 | return true; | 
|---|
| 3677 |  | 
|---|
| 3678 | if (DISPLAY_VER(display) < 30) { | 
|---|
| 3679 | if (new_dbuf_state && | 
|---|
| 3680 | new_dbuf_state->enabled_slices != | 
|---|
| 3681 | old_dbuf_state->enabled_slices) | 
|---|
| 3682 | return true; | 
|---|
| 3683 | } | 
|---|
| 3684 |  | 
|---|
| 3685 | return false; | 
|---|
| 3686 | } | 
|---|
| 3687 |  | 
|---|
| 3688 | static void skl_mbus_sanitize(struct intel_display *display) | 
|---|
| 3689 | { | 
|---|
| 3690 | struct intel_dbuf_state *dbuf_state = | 
|---|
| 3691 | to_intel_dbuf_state(display->dbuf.obj.state); | 
|---|
| 3692 |  | 
|---|
| 3693 | if (!HAS_MBUS_JOINING(display)) | 
|---|
| 3694 | return; | 
|---|
| 3695 |  | 
|---|
| 3696 | if (!dbuf_state->joined_mbus || | 
|---|
| 3697 | adlp_check_mbus_joined(active_pipes: dbuf_state->active_pipes)) | 
|---|
| 3698 | return; | 
|---|
| 3699 |  | 
|---|
| 3700 | drm_dbg_kms(display->drm, "Disabling redundant MBUS joining (active pipes 0x%x)\n", | 
|---|
| 3701 | dbuf_state->active_pipes); | 
|---|
| 3702 |  | 
|---|
| 3703 | dbuf_state->joined_mbus = false; | 
|---|
| 3704 | intel_dbuf_mdclk_cdclk_ratio_update(display, | 
|---|
| 3705 | ratio: dbuf_state->mdclk_cdclk_ratio, | 
|---|
| 3706 | joined_mbus: dbuf_state->joined_mbus); | 
|---|
| 3707 | pipe_mbus_dbox_ctl_update(display, dbuf_state); | 
|---|
| 3708 | mbus_ctl_join_update(display, dbuf_state, pipe: INVALID_PIPE); | 
|---|
| 3709 | } | 
|---|
| 3710 |  | 
|---|
| 3711 | static bool skl_dbuf_is_misconfigured(struct intel_display *display) | 
|---|
| 3712 | { | 
|---|
| 3713 | const struct intel_dbuf_state *dbuf_state = | 
|---|
| 3714 | to_intel_dbuf_state(display->dbuf.obj.state); | 
|---|
| 3715 | struct skl_ddb_entry entries[I915_MAX_PIPES] = {}; | 
|---|
| 3716 | struct intel_crtc *crtc; | 
|---|
| 3717 |  | 
|---|
| 3718 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 3719 | const struct intel_crtc_state *crtc_state = | 
|---|
| 3720 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3721 |  | 
|---|
| 3722 | entries[crtc->pipe] = crtc_state->wm.skl.ddb; | 
|---|
| 3723 | } | 
|---|
| 3724 |  | 
|---|
| 3725 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 3726 | const struct intel_crtc_state *crtc_state = | 
|---|
| 3727 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3728 | u8 slices; | 
|---|
| 3729 |  | 
|---|
| 3730 | slices = skl_compute_dbuf_slices(crtc, active_pipes: dbuf_state->active_pipes, | 
|---|
| 3731 | join_mbus: dbuf_state->joined_mbus); | 
|---|
| 3732 | if (dbuf_state->slices[crtc->pipe] & ~slices) | 
|---|
| 3733 | return true; | 
|---|
| 3734 |  | 
|---|
| 3735 | if (skl_ddb_allocation_overlaps(ddb: &crtc_state->wm.skl.ddb, entries, | 
|---|
| 3736 | num_entries: I915_MAX_PIPES, ignore_idx: crtc->pipe)) | 
|---|
| 3737 | return true; | 
|---|
| 3738 | } | 
|---|
| 3739 |  | 
|---|
| 3740 | return false; | 
|---|
| 3741 | } | 
|---|
| 3742 |  | 
|---|
| 3743 | static void skl_dbuf_sanitize(struct intel_display *display) | 
|---|
| 3744 | { | 
|---|
| 3745 | struct intel_crtc *crtc; | 
|---|
| 3746 |  | 
|---|
| 3747 | /* | 
|---|
| 3748 | * On TGL/RKL (at least) the BIOS likes to assign the planes | 
|---|
| 3749 | * to the wrong DBUF slices. This will cause an infinite loop | 
|---|
| 3750 | * in skl_commit_modeset_enables() as it can't find a way to | 
|---|
| 3751 | * transition between the old bogus DBUF layout to the new | 
|---|
| 3752 | * proper DBUF layout without DBUF allocation overlaps between | 
|---|
| 3753 | * the planes (which cannot be allowed or else the hardware | 
|---|
| 3754 | * may hang). If we detect a bogus DBUF layout just turn off | 
|---|
| 3755 | * all the planes so that skl_commit_modeset_enables() can | 
|---|
| 3756 | * simply ignore them. | 
|---|
| 3757 | */ | 
|---|
| 3758 | if (!skl_dbuf_is_misconfigured(display)) | 
|---|
| 3759 | return; | 
|---|
| 3760 |  | 
|---|
| 3761 | drm_dbg_kms(display->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n"); | 
|---|
| 3762 |  | 
|---|
| 3763 | for_each_intel_crtc(display->drm, crtc) { | 
|---|
| 3764 | struct intel_plane *plane = to_intel_plane(crtc->base.primary); | 
|---|
| 3765 | const struct intel_plane_state *plane_state = | 
|---|
| 3766 | to_intel_plane_state(plane->base.state); | 
|---|
| 3767 | struct intel_crtc_state *crtc_state = | 
|---|
| 3768 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3769 |  | 
|---|
| 3770 | if (plane_state->uapi.visible) | 
|---|
| 3771 | intel_plane_disable_noatomic(crtc, plane); | 
|---|
| 3772 |  | 
|---|
| 3773 | drm_WARN_ON(display->drm, crtc_state->active_planes != 0); | 
|---|
| 3774 |  | 
|---|
| 3775 | memset(s: &crtc_state->wm.skl.ddb, c: 0, n: sizeof(crtc_state->wm.skl.ddb)); | 
|---|
| 3776 | } | 
|---|
| 3777 | } | 
|---|
| 3778 |  | 
|---|
| 3779 | static void skl_wm_sanitize(struct intel_display *display) | 
|---|
| 3780 | { | 
|---|
| 3781 | skl_mbus_sanitize(display); | 
|---|
| 3782 | skl_dbuf_sanitize(display); | 
|---|
| 3783 | } | 
|---|
| 3784 |  | 
|---|
| 3785 | void skl_wm_crtc_disable_noatomic(struct intel_crtc *crtc) | 
|---|
| 3786 | { | 
|---|
| 3787 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 3788 | struct intel_crtc_state *crtc_state = | 
|---|
| 3789 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3790 | struct intel_dbuf_state *dbuf_state = | 
|---|
| 3791 | to_intel_dbuf_state(display->dbuf.obj.state); | 
|---|
| 3792 | enum pipe pipe = crtc->pipe; | 
|---|
| 3793 |  | 
|---|
| 3794 | if (DISPLAY_VER(display) < 9) | 
|---|
| 3795 | return; | 
|---|
| 3796 |  | 
|---|
| 3797 | dbuf_state->active_pipes &= ~BIT(pipe); | 
|---|
| 3798 |  | 
|---|
| 3799 | dbuf_state->weight[pipe] = 0; | 
|---|
| 3800 | dbuf_state->slices[pipe] = 0; | 
|---|
| 3801 |  | 
|---|
| 3802 | memset(s: &dbuf_state->ddb[pipe], c: 0, n: sizeof(dbuf_state->ddb[pipe])); | 
|---|
| 3803 |  | 
|---|
| 3804 | memset(s: &crtc_state->wm.skl.ddb, c: 0, n: sizeof(crtc_state->wm.skl.ddb)); | 
|---|
| 3805 | } | 
|---|
| 3806 |  | 
|---|
| 3807 | void skl_wm_plane_disable_noatomic(struct intel_crtc *crtc, | 
|---|
| 3808 | struct intel_plane *plane) | 
|---|
| 3809 | { | 
|---|
| 3810 | struct intel_display *display = to_intel_display(crtc); | 
|---|
| 3811 | struct intel_crtc_state *crtc_state = | 
|---|
| 3812 | to_intel_crtc_state(crtc->base.state); | 
|---|
| 3813 |  | 
|---|
| 3814 | if (DISPLAY_VER(display) < 9) | 
|---|
| 3815 | return; | 
|---|
| 3816 |  | 
|---|
| 3817 | skl_ddb_entry_init(entry: &crtc_state->wm.skl.plane_ddb[plane->id], start: 0, end: 0); | 
|---|
| 3818 | skl_ddb_entry_init(entry: &crtc_state->wm.skl.plane_ddb[plane->id], start: 0, end: 0); | 
|---|
| 3819 |  | 
|---|
| 3820 | crtc_state->wm.skl.plane_min_ddb[plane->id] = 0; | 
|---|
| 3821 | crtc_state->wm.skl.plane_interim_ddb[plane->id] = 0; | 
|---|
| 3822 |  | 
|---|
| 3823 | memset(s: &crtc_state->wm.skl.raw.planes[plane->id], c: 0, | 
|---|
| 3824 | n: sizeof(crtc_state->wm.skl.raw.planes[plane->id])); | 
|---|
| 3825 | memset(s: &crtc_state->wm.skl.optimal.planes[plane->id], c: 0, | 
|---|
| 3826 | n: sizeof(crtc_state->wm.skl.optimal.planes[plane->id])); | 
|---|
| 3827 | } | 
|---|
| 3828 |  | 
|---|
| 3829 | void intel_wm_state_verify(struct intel_atomic_state *state, | 
|---|
| 3830 | struct intel_crtc *crtc) | 
|---|
| 3831 | { | 
|---|
| 3832 | struct intel_display *display = to_intel_display(state); | 
|---|
| 3833 | const struct intel_crtc_state *new_crtc_state = | 
|---|
| 3834 | intel_atomic_get_new_crtc_state(state, crtc); | 
|---|
| 3835 | struct skl_hw_state { | 
|---|
| 3836 | struct skl_ddb_entry ddb[I915_MAX_PLANES]; | 
|---|
| 3837 | struct skl_ddb_entry ddb_y[I915_MAX_PLANES]; | 
|---|
| 3838 | u16 min_ddb[I915_MAX_PLANES]; | 
|---|
| 3839 | u16 interim_ddb[I915_MAX_PLANES]; | 
|---|
| 3840 | struct skl_pipe_wm wm; | 
|---|
| 3841 | } *hw; | 
|---|
| 3842 | const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal; | 
|---|
| 3843 | struct intel_plane *plane; | 
|---|
| 3844 | u8 hw_enabled_slices; | 
|---|
| 3845 | int level; | 
|---|
| 3846 |  | 
|---|
| 3847 | if (DISPLAY_VER(display) < 9 || !new_crtc_state->hw.active) | 
|---|
| 3848 | return; | 
|---|
| 3849 |  | 
|---|
| 3850 | hw = kzalloc(sizeof(*hw), GFP_KERNEL); | 
|---|
| 3851 | if (!hw) | 
|---|
| 3852 | return; | 
|---|
| 3853 |  | 
|---|
| 3854 | skl_pipe_wm_get_hw_state(crtc, out: &hw->wm); | 
|---|
| 3855 |  | 
|---|
| 3856 | skl_pipe_ddb_get_hw_state(crtc, ddb: hw->ddb, ddb_y: hw->ddb_y, min_ddb: hw->min_ddb, interim_ddb: hw->interim_ddb); | 
|---|
| 3857 |  | 
|---|
| 3858 | hw_enabled_slices = intel_enabled_dbuf_slices_mask(display); | 
|---|
| 3859 |  | 
|---|
| 3860 | if (DISPLAY_VER(display) >= 11 && | 
|---|
| 3861 | hw_enabled_slices != display->dbuf.enabled_slices) | 
|---|
| 3862 | drm_err(display->drm, | 
|---|
| 3863 | "mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n", | 
|---|
| 3864 | display->dbuf.enabled_slices, | 
|---|
| 3865 | hw_enabled_slices); | 
|---|
| 3866 |  | 
|---|
| 3867 | for_each_intel_plane_on_crtc(display->drm, crtc, plane) { | 
|---|
| 3868 | const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry; | 
|---|
| 3869 | const struct skl_wm_level *hw_wm_level, *sw_wm_level; | 
|---|
| 3870 |  | 
|---|
| 3871 | /* Watermarks */ | 
|---|
| 3872 | for (level = 0; level < display->wm.num_levels; level++) { | 
|---|
| 3873 | hw_wm_level = &hw->wm.planes[plane->id].wm[level]; | 
|---|
| 3874 | sw_wm_level = skl_plane_wm_level(pipe_wm: sw_wm, plane_id: plane->id, level); | 
|---|
| 3875 |  | 
|---|
| 3876 | if (skl_wm_level_equals(l1: hw_wm_level, l2: sw_wm_level)) | 
|---|
| 3877 | continue; | 
|---|
| 3878 |  | 
|---|
| 3879 | drm_err(display->drm, | 
|---|
| 3880 | "[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", | 
|---|
| 3881 | plane->base.base.id, plane->base.name, level, | 
|---|
| 3882 | sw_wm_level->enable, | 
|---|
| 3883 | sw_wm_level->blocks, | 
|---|
| 3884 | sw_wm_level->lines, | 
|---|
| 3885 | hw_wm_level->enable, | 
|---|
| 3886 | hw_wm_level->blocks, | 
|---|
| 3887 | hw_wm_level->lines); | 
|---|
| 3888 | } | 
|---|
| 3889 |  | 
|---|
| 3890 | hw_wm_level = &hw->wm.planes[plane->id].trans_wm; | 
|---|
| 3891 | sw_wm_level = skl_plane_trans_wm(pipe_wm: sw_wm, plane_id: plane->id); | 
|---|
| 3892 |  | 
|---|
| 3893 | if (!skl_wm_level_equals(l1: hw_wm_level, l2: sw_wm_level)) { | 
|---|
| 3894 | drm_err(display->drm, | 
|---|
| 3895 | "[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", | 
|---|
| 3896 | plane->base.base.id, plane->base.name, | 
|---|
| 3897 | sw_wm_level->enable, | 
|---|
| 3898 | sw_wm_level->blocks, | 
|---|
| 3899 | sw_wm_level->lines, | 
|---|
| 3900 | hw_wm_level->enable, | 
|---|
| 3901 | hw_wm_level->blocks, | 
|---|
| 3902 | hw_wm_level->lines); | 
|---|
| 3903 | } | 
|---|
| 3904 |  | 
|---|
| 3905 | hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0; | 
|---|
| 3906 | sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0; | 
|---|
| 3907 |  | 
|---|
| 3908 | if (HAS_HW_SAGV_WM(display) && | 
|---|
| 3909 | !skl_wm_level_equals(l1: hw_wm_level, l2: sw_wm_level)) { | 
|---|
| 3910 | drm_err(display->drm, | 
|---|
| 3911 | "[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", | 
|---|
| 3912 | plane->base.base.id, plane->base.name, | 
|---|
| 3913 | sw_wm_level->enable, | 
|---|
| 3914 | sw_wm_level->blocks, | 
|---|
| 3915 | sw_wm_level->lines, | 
|---|
| 3916 | hw_wm_level->enable, | 
|---|
| 3917 | hw_wm_level->blocks, | 
|---|
| 3918 | hw_wm_level->lines); | 
|---|
| 3919 | } | 
|---|
| 3920 |  | 
|---|
| 3921 | hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm; | 
|---|
| 3922 | sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm; | 
|---|
| 3923 |  | 
|---|
| 3924 | if (HAS_HW_SAGV_WM(display) && | 
|---|
| 3925 | !skl_wm_level_equals(l1: hw_wm_level, l2: sw_wm_level)) { | 
|---|
| 3926 | drm_err(display->drm, | 
|---|
| 3927 | "[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", | 
|---|
| 3928 | plane->base.base.id, plane->base.name, | 
|---|
| 3929 | sw_wm_level->enable, | 
|---|
| 3930 | sw_wm_level->blocks, | 
|---|
| 3931 | sw_wm_level->lines, | 
|---|
| 3932 | hw_wm_level->enable, | 
|---|
| 3933 | hw_wm_level->blocks, | 
|---|
| 3934 | hw_wm_level->lines); | 
|---|
| 3935 | } | 
|---|
| 3936 |  | 
|---|
| 3937 | /* DDB */ | 
|---|
| 3938 | hw_ddb_entry = &hw->ddb[PLANE_CURSOR]; | 
|---|
| 3939 | sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR]; | 
|---|
| 3940 |  | 
|---|
| 3941 | if (!skl_ddb_entry_equal(e1: hw_ddb_entry, e2: sw_ddb_entry)) { | 
|---|
| 3942 | drm_err(display->drm, | 
|---|
| 3943 | "[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n", | 
|---|
| 3944 | plane->base.base.id, plane->base.name, | 
|---|
| 3945 | sw_ddb_entry->start, sw_ddb_entry->end, | 
|---|
| 3946 | hw_ddb_entry->start, hw_ddb_entry->end); | 
|---|
| 3947 | } | 
|---|
| 3948 | } | 
|---|
| 3949 |  | 
|---|
| 3950 | kfree(objp: hw); | 
|---|
| 3951 | } | 
|---|
| 3952 |  | 
|---|
| 3953 | static const struct intel_wm_funcs skl_wm_funcs = { | 
|---|
| 3954 | .compute_global_watermarks = skl_compute_wm, | 
|---|
| 3955 | .get_hw_state = skl_wm_get_hw_state, | 
|---|
| 3956 | .sanitize = skl_wm_sanitize, | 
|---|
| 3957 | }; | 
|---|
| 3958 |  | 
|---|
| 3959 | void skl_wm_init(struct intel_display *display) | 
|---|
| 3960 | { | 
|---|
| 3961 | intel_sagv_init(display); | 
|---|
| 3962 |  | 
|---|
| 3963 | skl_setup_wm_latency(display); | 
|---|
| 3964 |  | 
|---|
| 3965 | display->funcs.wm = &skl_wm_funcs; | 
|---|
| 3966 | } | 
|---|
| 3967 |  | 
|---|
| 3968 | static int skl_watermark_ipc_status_show(struct seq_file *m, void *data) | 
|---|
| 3969 | { | 
|---|
| 3970 | struct intel_display *display = m->private; | 
|---|
| 3971 |  | 
|---|
| 3972 | seq_printf(m, fmt: "Isochronous Priority Control: %s\n", | 
|---|
| 3973 | str_yes_no(v: skl_watermark_ipc_enabled(display))); | 
|---|
| 3974 | return 0; | 
|---|
| 3975 | } | 
|---|
| 3976 |  | 
|---|
| 3977 | static int skl_watermark_ipc_status_open(struct inode *inode, struct file *file) | 
|---|
| 3978 | { | 
|---|
| 3979 | struct intel_display *display = inode->i_private; | 
|---|
| 3980 |  | 
|---|
| 3981 | return single_open(file, skl_watermark_ipc_status_show, display); | 
|---|
| 3982 | } | 
|---|
| 3983 |  | 
|---|
| 3984 | static ssize_t skl_watermark_ipc_status_write(struct file *file, | 
|---|
| 3985 | const char __user *ubuf, | 
|---|
| 3986 | size_t len, loff_t *offp) | 
|---|
| 3987 | { | 
|---|
| 3988 | struct seq_file *m = file->private_data; | 
|---|
| 3989 | struct intel_display *display = m->private; | 
|---|
| 3990 | bool enable; | 
|---|
| 3991 | int ret; | 
|---|
| 3992 |  | 
|---|
| 3993 | ret = kstrtobool_from_user(s: ubuf, count: len, res: &enable); | 
|---|
| 3994 | if (ret < 0) | 
|---|
| 3995 | return ret; | 
|---|
| 3996 |  | 
|---|
| 3997 | with_intel_display_rpm(display) { | 
|---|
| 3998 | if (!skl_watermark_ipc_enabled(display) && enable) | 
|---|
| 3999 | drm_info(display->drm, | 
|---|
| 4000 | "Enabling IPC: WM will be proper only after next commit\n"); | 
|---|
| 4001 | display->wm.ipc_enabled = enable; | 
|---|
| 4002 | skl_watermark_ipc_update(display); | 
|---|
| 4003 | } | 
|---|
| 4004 |  | 
|---|
| 4005 | return len; | 
|---|
| 4006 | } | 
|---|
| 4007 |  | 
|---|
| 4008 | static const struct file_operations skl_watermark_ipc_status_fops = { | 
|---|
| 4009 | .owner = THIS_MODULE, | 
|---|
| 4010 | .open = skl_watermark_ipc_status_open, | 
|---|
| 4011 | .read = seq_read, | 
|---|
| 4012 | .llseek = seq_lseek, | 
|---|
| 4013 | .release = single_release, | 
|---|
| 4014 | .write = skl_watermark_ipc_status_write | 
|---|
| 4015 | }; | 
|---|
| 4016 |  | 
|---|
| 4017 | static int intel_sagv_status_show(struct seq_file *m, void *unused) | 
|---|
| 4018 | { | 
|---|
| 4019 | struct intel_display *display = m->private; | 
|---|
| 4020 | static const char * const sagv_status[] = { | 
|---|
| 4021 | [I915_SAGV_UNKNOWN] = "unknown", | 
|---|
| 4022 | [I915_SAGV_DISABLED] = "disabled", | 
|---|
| 4023 | [I915_SAGV_ENABLED] = "enabled", | 
|---|
| 4024 | [I915_SAGV_NOT_CONTROLLED] = "not controlled", | 
|---|
| 4025 | }; | 
|---|
| 4026 |  | 
|---|
| 4027 | seq_printf(m, fmt: "SAGV available: %s\n", str_yes_no(v: intel_has_sagv(display))); | 
|---|
| 4028 | seq_printf(m, fmt: "SAGV modparam: %s\n", | 
|---|
| 4029 | str_enabled_disabled(v: display->params.enable_sagv)); | 
|---|
| 4030 | seq_printf(m, fmt: "SAGV status: %s\n", sagv_status[display->sagv.status]); | 
|---|
| 4031 | seq_printf(m, fmt: "SAGV block time: %d usec\n", display->sagv.block_time_us); | 
|---|
| 4032 |  | 
|---|
| 4033 | return 0; | 
|---|
| 4034 | } | 
|---|
| 4035 |  | 
|---|
| 4036 | DEFINE_SHOW_ATTRIBUTE(intel_sagv_status); | 
|---|
| 4037 |  | 
|---|
| 4038 | void skl_watermark_debugfs_register(struct intel_display *display) | 
|---|
| 4039 | { | 
|---|
| 4040 | struct dentry *debugfs_root = display->drm->debugfs_root; | 
|---|
| 4041 |  | 
|---|
| 4042 | if (HAS_IPC(display)) | 
|---|
| 4043 | debugfs_create_file( "i915_ipc_status", 0644, debugfs_root, | 
|---|
| 4044 | display, &skl_watermark_ipc_status_fops); | 
|---|
| 4045 |  | 
|---|
| 4046 | if (HAS_SAGV(display)) | 
|---|
| 4047 | debugfs_create_file( "i915_sagv_status", 0444, debugfs_root, | 
|---|
| 4048 | display, &intel_sagv_status_fops); | 
|---|
| 4049 | } | 
|---|
| 4050 |  | 
|---|
| 4051 | unsigned int skl_watermark_max_latency(struct intel_display *display, int initial_wm_level) | 
|---|
| 4052 | { | 
|---|
| 4053 | int level; | 
|---|
| 4054 |  | 
|---|
| 4055 | for (level = display->wm.num_levels - 1; level >= initial_wm_level; level--) { | 
|---|
| 4056 | unsigned int latency = skl_wm_latency(display, level, NULL); | 
|---|
| 4057 |  | 
|---|
| 4058 | if (latency) | 
|---|
| 4059 | return latency; | 
|---|
| 4060 | } | 
|---|
| 4061 |  | 
|---|
| 4062 | return 0; | 
|---|
| 4063 | } | 
|---|
| 4064 |  | 
|---|