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/*
*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
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