diff options
Diffstat (limited to 'drivers/devfreq/devfreq_spdm.h')
| -rw-r--r-- | drivers/devfreq/devfreq_spdm.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/devfreq/devfreq_spdm.h b/drivers/devfreq/devfreq_spdm.h new file mode 100644 index 000000000000..c68f81cf8d4e --- /dev/null +++ b/drivers/devfreq/devfreq_spdm.h @@ -0,0 +1,130 @@ +/* +*Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. +* +*This program is free software; you can redistribute it and/or modify +*it under the terms of the GNU General Public License version 2 and +*only version 2 as published by the Free Software Foundation. +* +*This program is distributed in the hope that it will be useful, +*but WITHOUT ANY WARRANTY; without even the implied warranty of +*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +*GNU General Public License for more details. +*/ + +#ifndef DEVFREQ_SPDM_H +#define DEVFREQ_SPDM_H + +#include <linux/list.h> +#include <soc/qcom/hvc.h> +#include <soc/qcom/scm.h> + +enum pl_levels { SPDM_PL1, SPDM_PL2, SPDM_PL3, SPDM_PL_COUNT }; +enum actions { SPDM_UP, SPDM_DOWN }; +enum spdm_client { SPDM_CLIENT_CPU, SPDM_CLIENT_GPU, SPDM_CLIENT_COUNT }; + +struct spdm_config_data { + /* in MB/s */ + u32 upstep; + u32 downstep; + u32 up_step_multp; + + u32 num_ports; + u32 *ports; + u32 aup; + u32 adown; + u32 bucket_size; + + /* + * If We define n PL levels we need n-1 frequencies to tell + * where to change from one pl to another + */ + /* hz */ + u32 pl_freqs[SPDM_PL_COUNT - 1]; + /* + * We have a low threshold and a high threhold for each pl to support + * the two port solution so we need twice as many entries as + * performance levels + */ + /* in 100th's of a percent */ + u32 reject_rate[SPDM_PL_COUNT * 2]; + u32 response_time_us[SPDM_PL_COUNT * 2]; + u32 cci_response_time_us[SPDM_PL_COUNT * 2]; + /* hz */ + u32 max_cci_freq; + /* in MB/s */ + u32 max_vote; + +}; + +struct spdm_data { + /* bus scaling data */ + int cur_idx; + struct msm_bus_scale_pdata *pdata; + u32 bus_scale_client_id; + /* in mb/s */ + u32 new_bw; + + /* devfreq data */ + struct devfreq *devfreq; + struct devfreq_dev_profile *profile; + unsigned long action; + int window; + struct clk *cci_clk; + + /* spdm hw/gov data */ + struct spdm_config_data config_data; + + enum spdm_client spdm_client; + /* list used by governor to keep track of spdm devices */ + struct list_head list; + + struct dentry *debugfs_dir; + + bool enabled; +}; + +extern void spdm_init_debugfs(struct device *dev); +extern void spdm_remove_debugfs(struct spdm_data *data); + +#define SPDM_HYP_FNID 5 +#define SPDM_SCM_SVC_ID 0x9 +#define SPDM_SCM_CMD_ID 0x4 +#define SPDM_TZ_VERSION 0x20000 /* TZ SPDM driver version */ +/* SPDM CMD ID's for hypervisor/SCM */ +#define SPDM_CMD_GET_VERSION 0 +#define SPDM_CMD_GET_BW_ALL 1 +#define SPDM_CMD_GET_BW_SPECIFIC 2 +#define SPDM_CMD_ENABLE 3 +#define SPDM_CMD_DISABLE 4 +#define SPDM_CMD_CFG_PORTS 5 +#define SPDM_CMD_CFG_FLTR 6 +#define SPDM_CMD_CFG_PL 7 +#define SPDM_CMD_CFG_REJRATE_LOW 8 +#define SPDM_CMD_CFG_REJRATE_MED 9 +#define SPDM_CMD_CFG_REJRATE_HIGH 10 +#define SPDM_CMD_CFG_RESPTIME_LOW 11 +#define SPDM_CMD_CFG_RESPTIME_MED 12 +#define SPDM_CMD_CFG_RESPTIME_HIGH 13 +#define SPDM_CMD_CFG_CCIRESPTIME_LOW 14 +#define SPDM_CMD_CFG_CCIRESPTIME_MED 15 +#define SPDM_CMD_CFG_CCIRESPTIME_HIGH 16 +#define SPDM_CMD_CFG_MAXCCI 17 +#define SPDM_CMD_CFG_VOTES 18 + +#define SPDM_MAX_ARGS 6 +#define SPDM_MAX_RETS 3 + +struct spdm_args { + u64 arg[SPDM_MAX_ARGS]; + u64 ret[SPDM_MAX_RETS]; +}; + +extern int __spdm_hyp_call(struct spdm_args *args, int num_args); +extern int __spdm_scm_call(struct spdm_args *args, int num_args); + +#ifdef CONFIG_SPDM_SCM +#define spdm_ext_call __spdm_scm_call +#else +#define spdm_ext_call __spdm_hyp_call +#endif +#endif |