| Odelu Kukatla | 7382075 | 2017-10-30 13:27:16 +0530 | [diff] [blame] | 1 | /* |
| 2 | *Copyright (c) 2014-2015, 2017, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | *This program is free software; you can redistribute it and/or modify |
| 5 | *it under the terms of the GNU General Public License version 2 and |
| 6 | *only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | *This program is distributed in the hope that it will be useful, |
| 9 | *but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | *GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #ifndef DEVFREQ_SPDM_H |
| 15 | #define DEVFREQ_SPDM_H |
| 16 | |
| 17 | #include <linux/list.h> |
| 18 | #ifdef CONFIG_MSM_HVC |
| 19 | #include <soc/qcom/hvc.h> |
| 20 | #endif |
| 21 | #include <soc/qcom/scm.h> |
| 22 | |
| 23 | enum pl_levels { SPDM_PL1, SPDM_PL2, SPDM_PL3, SPDM_PL_COUNT }; |
| 24 | enum actions { SPDM_UP, SPDM_DOWN }; |
| 25 | enum spdm_client { SPDM_CLIENT_CPU, SPDM_CLIENT_GPU, SPDM_CLIENT_COUNT }; |
| 26 | |
| 27 | struct spdm_config_data { |
| 28 | /* in MB/s */ |
| 29 | u32 upstep; |
| 30 | u32 downstep; |
| 31 | u32 up_step_multp; |
| 32 | |
| 33 | u32 num_ports; |
| 34 | u32 *ports; |
| 35 | u32 aup; |
| 36 | u32 adown; |
| 37 | u32 bucket_size; |
| 38 | |
| 39 | /* |
| 40 | * If We define n PL levels we need n-1 frequencies to tell |
| 41 | * where to change from one pl to another |
| 42 | */ |
| 43 | /* hz */ |
| 44 | u32 pl_freqs[SPDM_PL_COUNT - 1]; |
| 45 | /* |
| 46 | * We have a low threshold and a high threhold for each pl to support |
| 47 | * the two port solution so we need twice as many entries as |
| 48 | * performance levels |
| 49 | */ |
| 50 | /* in 100th's of a percent */ |
| 51 | u32 reject_rate[SPDM_PL_COUNT * 2]; |
| 52 | u32 response_time_us[SPDM_PL_COUNT * 2]; |
| 53 | u32 cci_response_time_us[SPDM_PL_COUNT * 2]; |
| 54 | /* hz */ |
| 55 | u32 max_cci_freq; |
| 56 | /* in MB/s */ |
| 57 | u32 max_vote; |
| 58 | |
| 59 | }; |
| 60 | |
| 61 | struct spdm_data { |
| 62 | /* bus scaling data */ |
| 63 | int cur_idx; |
| 64 | struct msm_bus_scale_pdata *pdata; |
| 65 | u32 bus_scale_client_id; |
| 66 | /* in mb/s */ |
| 67 | u32 new_bw; |
| 68 | |
| 69 | /* devfreq data */ |
| 70 | struct devfreq *devfreq; |
| 71 | struct devfreq_dev_profile *profile; |
| 72 | unsigned long action; |
| 73 | int window; |
| 74 | struct clk *cci_clk; |
| 75 | |
| 76 | /* spdm hw/gov data */ |
| 77 | struct spdm_config_data config_data; |
| 78 | |
| 79 | enum spdm_client spdm_client; |
| 80 | /* list used by governor to keep track of spdm devices */ |
| 81 | struct list_head list; |
| 82 | |
| 83 | struct dentry *debugfs_dir; |
| 84 | |
| 85 | bool enabled; |
| 86 | }; |
| 87 | |
| 88 | extern void spdm_init_debugfs(struct device *dev); |
| 89 | extern void spdm_remove_debugfs(struct spdm_data *data); |
| 90 | |
| 91 | #define SPDM_HYP_FNID 5 |
| 92 | #define SPDM_SCM_SVC_ID 0x9 |
| 93 | #define SPDM_SCM_CMD_ID 0x4 |
| 94 | #define SPDM_TZ_VERSION 0x20000 /* TZ SPDM driver version */ |
| 95 | /* SPDM CMD ID's for hypervisor/SCM */ |
| 96 | #define SPDM_CMD_GET_VERSION 0 |
| 97 | #define SPDM_CMD_GET_BW_ALL 1 |
| 98 | #define SPDM_CMD_GET_BW_SPECIFIC 2 |
| 99 | #define SPDM_CMD_ENABLE 3 |
| 100 | #define SPDM_CMD_DISABLE 4 |
| 101 | #define SPDM_CMD_CFG_PORTS 5 |
| 102 | #define SPDM_CMD_CFG_FLTR 6 |
| 103 | #define SPDM_CMD_CFG_PL 7 |
| 104 | #define SPDM_CMD_CFG_REJRATE_LOW 8 |
| 105 | #define SPDM_CMD_CFG_REJRATE_MED 9 |
| 106 | #define SPDM_CMD_CFG_REJRATE_HIGH 10 |
| 107 | #define SPDM_CMD_CFG_RESPTIME_LOW 11 |
| 108 | #define SPDM_CMD_CFG_RESPTIME_MED 12 |
| 109 | #define SPDM_CMD_CFG_RESPTIME_HIGH 13 |
| 110 | #define SPDM_CMD_CFG_CCIRESPTIME_LOW 14 |
| 111 | #define SPDM_CMD_CFG_CCIRESPTIME_MED 15 |
| 112 | #define SPDM_CMD_CFG_CCIRESPTIME_HIGH 16 |
| 113 | #define SPDM_CMD_CFG_MAXCCI 17 |
| 114 | #define SPDM_CMD_CFG_VOTES 18 |
| 115 | |
| 116 | #define SPDM_MAX_ARGS 6 |
| 117 | #define SPDM_MAX_RETS 3 |
| 118 | |
| 119 | struct spdm_args { |
| 120 | u64 arg[SPDM_MAX_ARGS]; |
| 121 | u64 ret[SPDM_MAX_RETS]; |
| 122 | }; |
| 123 | |
| 124 | #ifdef CONFIG_SPDM_SCM |
| 125 | extern int __spdm_scm_call(struct spdm_args *args, int num_args); |
| 126 | #define spdm_ext_call __spdm_scm_call |
| 127 | #else |
| 128 | extern int __spdm_hyp_call(struct spdm_args *args, int num_args); |
| 129 | #define spdm_ext_call __spdm_hyp_call |
| 130 | #endif |
| 131 | #endif |