1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. 3 */ 4 5 #ifndef _DPU_CORE_PERF_H_ 6 #define _DPU_CORE_PERF_H_ 7 8 #include <linux/types.h> 9 #include <linux/dcache.h> 10 #include <linux/mutex.h> 11 #include <drm/drm_crtc.h> 12 13 #include "dpu_hw_catalog.h" 14 15 #define DPU_PERF_DEFAULT_MAX_CORE_CLK_RATE 412500000 16 17 /** 18 * enum dpu_core_perf_data_bus_id - data bus identifier 19 * @DPU_CORE_PERF_DATA_BUS_ID_MNOC: DPU/MNOC data bus 20 * @DPU_CORE_PERF_DATA_BUS_ID_LLCC: MNOC/LLCC data bus 21 * @DPU_CORE_PERF_DATA_BUS_ID_EBI: LLCC/EBI data bus 22 */ 23 enum dpu_core_perf_data_bus_id { 24 DPU_CORE_PERF_DATA_BUS_ID_MNOC, 25 DPU_CORE_PERF_DATA_BUS_ID_LLCC, 26 DPU_CORE_PERF_DATA_BUS_ID_EBI, 27 DPU_CORE_PERF_DATA_BUS_ID_MAX, 28 }; 29 30 /** 31 * struct dpu_core_perf_params - definition of performance parameters 32 * @max_per_pipe_ib: maximum instantaneous bandwidth request 33 * @bw_ctl: arbitrated bandwidth request 34 * @core_clk_rate: core clock rate request 35 */ 36 struct dpu_core_perf_params { 37 u64 max_per_pipe_ib; 38 u64 bw_ctl; 39 u64 core_clk_rate; 40 }; 41 42 /** 43 * struct dpu_core_perf_tune - definition of performance tuning control 44 * @mode: performance mode 45 * @min_core_clk: minimum core clock 46 * @min_bus_vote: minimum bus vote 47 */ 48 struct dpu_core_perf_tune { 49 u32 mode; 50 u64 min_core_clk; 51 u64 min_bus_vote; 52 }; 53 54 /** 55 * struct dpu_core_perf - definition of core performance context 56 * @dev: Pointer to drm device 57 * @debugfs_root: top level debug folder 58 * @catalog: Pointer to catalog configuration 59 * @core_clk: Pointer to the core clock 60 * @core_clk_rate: current core clock rate 61 * @max_core_clk_rate: maximum allowable core clock rate 62 * @perf_tune: debug control for performance tuning 63 * @enable_bw_release: debug control for bandwidth release 64 * @fix_core_clk_rate: fixed core clock request in Hz used in mode 2 65 * @fix_core_ib_vote: fixed core ib vote in bps used in mode 2 66 * @fix_core_ab_vote: fixed core ab vote in bps used in mode 2 67 */ 68 struct dpu_core_perf { 69 struct drm_device *dev; 70 struct dentry *debugfs_root; 71 struct dpu_mdss_cfg *catalog; 72 struct clk *core_clk; 73 u64 core_clk_rate; 74 u64 max_core_clk_rate; 75 struct dpu_core_perf_tune perf_tune; 76 u32 enable_bw_release; 77 u64 fix_core_clk_rate; 78 u64 fix_core_ib_vote; 79 u64 fix_core_ab_vote; 80 }; 81 82 /** 83 * dpu_core_perf_crtc_check - validate performance of the given crtc state 84 * @crtc: Pointer to crtc 85 * @state: Pointer to new crtc state 86 * return: zero if success, or error code otherwise 87 */ 88 int dpu_core_perf_crtc_check(struct drm_crtc *crtc, 89 struct drm_crtc_state *state); 90 91 /** 92 * dpu_core_perf_crtc_update - update performance of the given crtc 93 * @crtc: Pointer to crtc 94 * @params_changed: true if crtc parameters are modified 95 * @stop_req: true if this is a stop request 96 * return: zero if success, or error code otherwise 97 */ 98 int dpu_core_perf_crtc_update(struct drm_crtc *crtc, 99 int params_changed, bool stop_req); 100 101 /** 102 * dpu_core_perf_crtc_release_bw - release bandwidth of the given crtc 103 * @crtc: Pointer to crtc 104 */ 105 void dpu_core_perf_crtc_release_bw(struct drm_crtc *crtc); 106 107 /** 108 * dpu_core_perf_destroy - destroy the given core performance context 109 * @perf: Pointer to core performance context 110 */ 111 void dpu_core_perf_destroy(struct dpu_core_perf *perf); 112 113 /** 114 * dpu_core_perf_init - initialize the given core performance context 115 * @perf: Pointer to core performance context 116 * @dev: Pointer to drm device 117 * @catalog: Pointer to catalog 118 * @core_clk: pointer to core clock 119 */ 120 int dpu_core_perf_init(struct dpu_core_perf *perf, 121 struct drm_device *dev, 122 struct dpu_mdss_cfg *catalog, 123 struct clk *core_clk); 124 125 struct dpu_kms; 126 127 /** 128 * dpu_core_perf_debugfs_init - initialize debugfs for core performance context 129 * @dpu_kms: Pointer to the dpu_kms struct 130 * @debugfs_parent: Pointer to parent debugfs 131 */ 132 int dpu_core_perf_debugfs_init(struct dpu_kms *dpu_kms, struct dentry *parent); 133 134 #endif /* _DPU_CORE_PERF_H_ */ 135