// SPDX-License-Identifier: GPL-2.0
/*
 * Intel Speed Select -- Enumerate and control features
 * Copyright (c) 2019 Intel Corporation.
 */

#include "isst.h"

static struct isst_platform_ops         *isst_ops;

#define CHECK_CB(_name) \
        do {    \
                if (!isst_ops || !isst_ops->_name) {    \
                        fprintf(stderr, "Invalid ops\n");       \
                        exit(0);        \
                }       \
        } while (0)

int isst_set_platform_ops(int api_version)
{
        switch (api_version) {
        case 1:
                isst_ops = mbox_get_platform_ops();
                break;
        case 2:
        case 3:
                isst_ops = tpmi_get_platform_ops();
                break;
        default:
                isst_ops = NULL;
                break;
        }

        if (!isst_ops)
                return -1;
        return 0;
}

void isst_update_platform_param(enum isst_platform_param param, int value)
{
        CHECK_CB(update_platform_param);

        isst_ops->update_platform_param(param, value);
}

int isst_get_disp_freq_multiplier(void)
{
        CHECK_CB(get_disp_freq_multiplier);
        return isst_ops->get_disp_freq_multiplier();
}

int isst_get_trl_max_levels(void)
{
        CHECK_CB(get_trl_max_levels);
        return isst_ops->get_trl_max_levels();
}

char *isst_get_trl_level_name(int level)
{
        CHECK_CB(get_trl_level_name);
        return isst_ops->get_trl_level_name(level);
}

int isst_is_punit_valid(struct isst_id *id)
{
        CHECK_CB(is_punit_valid);
        return isst_ops->is_punit_valid(id);
}

int isst_send_msr_command(unsigned int cpu, unsigned int msr, int write,
                          unsigned long long *req_resp)
{
        struct isst_if_msr_cmds msr_cmds;
        const char *pathname = "/dev/isst_interface";
        FILE *outf = get_output_file();
        int fd;

        fd = open(pathname, O_RDWR);
        if (fd < 0)
                err(-1, "%s open failed", pathname);

        msr_cmds.cmd_count = 1;
        msr_cmds.msr_cmd[0].logical_cpu = cpu;
        msr_cmds.msr_cmd[0].msr = msr;
        msr_cmds.msr_cmd[0].read_write = write;
        if (write)
                msr_cmds.msr_cmd[0].data = *req_resp;

        if (ioctl(fd, ISST_IF_MSR_COMMAND, &msr_cmds) == -1) {
                perror("ISST_IF_MSR_COMMAND");
                fprintf(outf, "Error: msr_cmd cpu:%d msr:%x read_write:%d\n",
                        cpu, msr, write);
        } else {
                if (!write)
                        *req_resp = msr_cmds.msr_cmd[0].data;

                debug_printf(
                        "msr_cmd response: cpu:%d msr:%x rd_write:%x resp:%llx %llx\n",
                        cpu, msr, write, *req_resp, msr_cmds.msr_cmd[0].data);
        }

        close(fd);

        return 0;
}

int isst_read_pm_config(struct isst_id *id, int *cp_state, int *cp_cap)
{
        CHECK_CB(read_pm_config);
        return isst_ops->read_pm_config(id, cp_state, cp_cap);
}

int isst_get_ctdp_levels(struct isst_id *id, struct isst_pkg_ctdp *pkg_dev)
{
        CHECK_CB(get_config_levels);
        return isst_ops->get_config_levels(id, pkg_dev);
}

int isst_get_ctdp_control(struct isst_id *id, int config_index,
                          struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(get_ctdp_control);
        return isst_ops->get_ctdp_control(id, config_index, ctdp_level);
}

int isst_get_tdp_info(struct isst_id *id, int config_index,
                      struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(get_tdp_info);
        return isst_ops->get_tdp_info(id, config_index, ctdp_level);
}

int isst_get_pwr_info(struct isst_id *id, int config_index,
                      struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(get_pwr_info);
        return isst_ops->get_pwr_info(id, config_index, ctdp_level);
}

int isst_get_coremask_info(struct isst_id *id, int config_index,
                           struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(get_coremask_info);
        return isst_ops->get_coremask_info(id, config_index, ctdp_level);
}

int isst_get_get_trl_from_msr(struct isst_id *id, int *trl)
{
        unsigned long long msr_trl;
        int ret;

        ret = isst_send_msr_command(id->cpu, 0x1AD, 0, &msr_trl);
        if (ret)
                return ret;

        trl[0] = msr_trl & GENMASK(7, 0);
        trl[1] = (msr_trl & GENMASK(15, 8)) >> 8;
        trl[2] = (msr_trl & GENMASK(23, 16)) >> 16;
        trl[3] = (msr_trl & GENMASK(31, 24)) >> 24;
        trl[4] = (msr_trl & GENMASK(39, 32)) >> 32;
        trl[5] = (msr_trl & GENMASK(47, 40)) >> 40;
        trl[6] = (msr_trl & GENMASK(55, 48)) >> 48;
        trl[7] = (msr_trl & GENMASK(63, 56)) >> 56;

        return 0;
}

int isst_get_get_trl(struct isst_id *id, int level, int avx_level, int *trl)
{
        CHECK_CB(get_get_trl);
        return isst_ops->get_get_trl(id, level, avx_level, trl);
}

int isst_get_get_trls(struct isst_id *id, int level, struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(get_get_trls);
        return isst_ops->get_get_trls(id, level, ctdp_level);
}

int isst_get_trl_bucket_info(struct isst_id *id, int level, unsigned long long *buckets_info)
{
        CHECK_CB(get_trl_bucket_info);
        return isst_ops->get_trl_bucket_info(id, level, buckets_info);
}

int isst_set_tdp_level(struct isst_id *id, int tdp_level)
{
        CHECK_CB(set_tdp_level);
        return isst_ops->set_tdp_level(id, tdp_level);
}

int isst_get_pbf_info(struct isst_id *id, int level, struct isst_pbf_info *pbf_info)
{
        struct isst_pkg_ctdp_level_info ctdp_level;
        struct isst_pkg_ctdp pkg_dev;
        int ret;

        ret = isst_get_ctdp_levels(id, &pkg_dev);
        if (ret) {
                isst_display_error_info_message(1, "Failed to get number of levels", 0, 0);
                return ret;
        }

        if (level > pkg_dev.levels) {
                isst_display_error_info_message(1, "Invalid level", 1, level);
                return -1;
        }

        ret = isst_get_ctdp_control(id, level, &ctdp_level);
        if (ret)
                return ret;

        if (!ctdp_level.pbf_support) {
                isst_display_error_info_message(1, "base-freq feature is not present at this level", 1, level);
                return -1;
        }

        pbf_info->core_cpumask_size = alloc_cpu_set(&pbf_info->core_cpumask);

        CHECK_CB(get_pbf_info);
        return isst_ops->get_pbf_info(id, level, pbf_info);
}

int isst_set_pbf_fact_status(struct isst_id *id, int pbf, int enable)
{
        CHECK_CB(set_pbf_fact_status);
        return isst_ops->set_pbf_fact_status(id, pbf, enable);
}



int isst_get_fact_info(struct isst_id *id, int level, int fact_bucket, struct isst_fact_info *fact_info)
{
        struct isst_pkg_ctdp_level_info ctdp_level;
        struct isst_pkg_ctdp pkg_dev;
        int ret;

        ret = isst_get_ctdp_levels(id, &pkg_dev);
        if (ret) {
                isst_display_error_info_message(1, "Failed to get number of levels", 0, 0);
                return ret;
        }

        if (level > pkg_dev.levels) {
                isst_display_error_info_message(1, "Invalid level", 1, level);
                return -1;
        }

        ret = isst_get_ctdp_control(id, level, &ctdp_level);
        if (ret)
                return ret;

        if (!ctdp_level.fact_support) {
                isst_display_error_info_message(1, "turbo-freq feature is not present at this level", 1, level);
                return -1;
        }
        CHECK_CB(get_fact_info);
        return isst_ops->get_fact_info(id, level, fact_bucket, fact_info);
}

int isst_get_trl(struct isst_id *id, unsigned long long *trl)
{
        int ret;

        ret = isst_send_msr_command(id->cpu, 0x1AD, 0, trl);
        if (ret)
                return ret;

        return 0;
}

int isst_set_trl(struct isst_id *id, unsigned long long trl)
{
        int ret;

        if (!trl)
                trl = 0xFFFFFFFFFFFFFFFFULL;

        ret = isst_send_msr_command(id->cpu, 0x1AD, 1, &trl);
        if (ret)
                return ret;

        return 0;
}

#define MSR_TRL_FREQ_MULTIPLIER         100

int isst_set_trl_from_current_tdp(struct isst_id *id, unsigned long long trl)
{
        unsigned long long msr_trl;
        int ret;

        if (id->cpu < 0)
                return 0;

        if (trl) {
                msr_trl = trl;
        } else {
                struct isst_pkg_ctdp pkg_dev;
                int trl[8];
                int i;

                ret = isst_get_ctdp_levels(id, &pkg_dev);
                if (ret)
                        return ret;

                ret = isst_get_get_trl(id, pkg_dev.current_level, 0, trl);
                if (ret)
                        return ret;

                msr_trl = 0;
                for (i = 0; i < 8; ++i) {
                        unsigned long long _trl = trl[i];

                        /* MSR is always in 100 MHz unit */
                        if (isst_get_disp_freq_multiplier() == 1)
                                _trl /= MSR_TRL_FREQ_MULTIPLIER;

                        msr_trl |= (_trl << (i * 8));
                }
        }
        ret = isst_send_msr_command(id->cpu, 0x1AD, 1, &msr_trl);
        if (ret)
                return ret;

        return 0;
}

/* Return 1 if locked */
int isst_get_config_tdp_lock_status(struct isst_id *id)
{
        unsigned long long tdp_control = 0;
        int ret;

        ret = isst_send_msr_command(id->cpu, 0x64b, 0, &tdp_control);
        if (ret)
                return ret;

        ret = !!(tdp_control & BIT(31));

        return ret;
}

void isst_get_process_ctdp_complete(struct isst_id *id, struct isst_pkg_ctdp *pkg_dev)
{
        int i;

        if (!pkg_dev->processed)
                return;

        for (i = 0; i < pkg_dev->levels; ++i) {
                struct isst_pkg_ctdp_level_info *ctdp_level;

                ctdp_level = &pkg_dev->ctdp_level[i];
                if (ctdp_level->pbf_support)
                        free_cpu_set(ctdp_level->pbf_info.core_cpumask);
                free_cpu_set(ctdp_level->core_cpumask);
        }
}

void isst_adjust_uncore_freq(struct isst_id *id, int config_index,
                                struct isst_pkg_ctdp_level_info *ctdp_level)
{
        CHECK_CB(adjust_uncore_freq);
        return isst_ops->adjust_uncore_freq(id, config_index, ctdp_level);
}

int isst_get_process_ctdp(struct isst_id *id, int tdp_level, struct isst_pkg_ctdp *pkg_dev)
{
        int i, ret, valid = 0;

        if (pkg_dev->processed)
                return 0;

        ret = isst_get_ctdp_levels(id, pkg_dev);
        if (ret)
                return ret;

        debug_printf("cpu: %d ctdp enable:%d current level: %d levels:%d\n",
                     id->cpu, pkg_dev->enabled, pkg_dev->current_level,
                     pkg_dev->levels);

        if (tdp_level != 0xff && tdp_level > pkg_dev->levels) {
                isst_display_error_info_message(1, "Invalid level", 0, 0);
                return -1;
        }

        if (!pkg_dev->enabled)
                isst_display_error_info_message(0, "perf-profile feature is not supported, just base-config level 0 is valid", 0, 0);

        for (i = 0; i <= pkg_dev->levels; ++i) {
                struct isst_pkg_ctdp_level_info *ctdp_level;

                if (tdp_level != 0xff && i != tdp_level)
                        continue;

                debug_printf("cpu:%d Get Information for TDP level:%d\n", id->cpu,
                             i);
                ctdp_level = &pkg_dev->ctdp_level[i];

                ctdp_level->level = i;
                ctdp_level->control_cpu = id->cpu;
                ctdp_level->pkg_id = id->pkg;
                ctdp_level->die_id = id->die;

                ret = isst_get_ctdp_control(id, i, ctdp_level);
                if (ret)
                        continue;

                valid = 1;
                pkg_dev->processed = 1;
                ctdp_level->processed = 1;

                if (ctdp_level->pbf_support) {
                        ret = isst_get_pbf_info(id, i, &ctdp_level->pbf_info);
                        if (!ret)
                                ctdp_level->pbf_found = 1;
                }

                if (ctdp_level->fact_support) {
                        ret = isst_get_fact_info(id, i, 0xff,
                                                 &ctdp_level->fact_info);
                        if (ret)
                                return ret;
                }

                if (!pkg_dev->enabled && is_skx_based_platform()) {
                        int freq;

                        freq = get_cpufreq_base_freq(id->cpu);
                        if (freq > 0) {
                                ctdp_level->sse_p1 = freq / 100000;
                                ctdp_level->tdp_ratio = ctdp_level->sse_p1;
                        }

                        isst_get_get_trl_from_msr(id, ctdp_level->trl_ratios[0]);
                        isst_get_trl_bucket_info(id, i, &ctdp_level->trl_cores);
                        continue;
                }

                ret = isst_get_tdp_info(id, i, ctdp_level);
                if (ret)
                        return ret;

                ret = isst_get_pwr_info(id, i, ctdp_level);
                if (ret)
                        return ret;

                ctdp_level->core_cpumask_size =
                        alloc_cpu_set(&ctdp_level->core_cpumask);
                ret = isst_get_coremask_info(id, i, ctdp_level);
                if (ret)
                        return ret;

                ret = isst_get_trl_bucket_info(id, i, &ctdp_level->trl_cores);
                if (ret)
                        return ret;

                ret = isst_get_get_trls(id, i, ctdp_level);
                if (ret)
                        return ret;
        }

        if (!valid)
                isst_display_error_info_message(0, "Invalid level, Can't get TDP control information at specified levels on cpu", 1, id->cpu);

        return 0;
}

int isst_clos_get_clos_information(struct isst_id *id, int *enable, int *type)
{
        CHECK_CB(get_clos_information);
        return isst_ops->get_clos_information(id, enable, type);
}

int isst_pm_qos_config(struct isst_id *id, int enable_clos, int priority_type)
{
        CHECK_CB(pm_qos_config);
        return isst_ops->pm_qos_config(id, enable_clos, priority_type);
}

int isst_pm_get_clos(struct isst_id *id, int clos, struct isst_clos_config *clos_config)
{
        CHECK_CB(pm_get_clos);
        return isst_ops->pm_get_clos(id, clos, clos_config);
}

int isst_set_clos(struct isst_id *id, int clos, struct isst_clos_config *clos_config)
{
        CHECK_CB(set_clos);
        return isst_ops->set_clos(id, clos, clos_config);
}

int isst_clos_get_assoc_status(struct isst_id *id, int *clos_id)
{
        CHECK_CB(clos_get_assoc_status);
        return isst_ops->clos_get_assoc_status(id, clos_id);
}

int isst_clos_associate(struct isst_id *id, int clos_id)
{
        CHECK_CB(clos_associate);
        return isst_ops->clos_associate(id, clos_id);

}