/* $NetBSD: scmi.h,v 1.1 2025/01/08 22:55:35 jmcneill Exp $ */
/*
* Copyright (c) 2023 Mark Kettenis <
[email protected]>
* Copyright (c) 2024 Tobias Heider <
[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#pragma once
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kmem.h>
#include <sys/mutex.h>
struct scmi_shmem {
uint32_t reserved1;
uint32_t channel_status;
#define SCMI_CHANNEL_ERROR (1 << 1)
#define SCMI_CHANNEL_FREE (1 << 0)
uint32_t reserved2;
uint32_t reserved3;
uint32_t channel_flags;
uint32_t length;
uint32_t message_header;
uint32_t message_payload[];
};
struct scmi_softc;
struct scmi_perf_level {
uint32_t pl_perf;
uint32_t pl_cost;
uint32_t pl_ifreq;
};
struct scmi_perf_domain {
struct scmi_softc *pd_sc;
uint32_t pd_domain_id;
size_t pd_nlevels;
struct scmi_perf_level *pd_levels;
int pd_curlevel;
char pd_name[16];
bool pd_can_level_set;
bool pd_level_index_mode;
uint32_t pd_rate_limit;
uint32_t pd_sustained_perf;
struct cpu_info *pd_ci; /* first CPU in domain */
u_int pd_busy;
char *pd_freq_available;
u_int pd_freq_target;
int pd_node_target;
int pd_node_current;
int pd_node_available;
};
struct scmi_perf_domain_map {
uint32_t pm_domain;
struct cpu_info *pm_ci; /* first CPU in domain */
};
struct scmi_softc {
device_t sc_dev;
bus_space_tag_t sc_iot;
volatile struct scmi_shmem *sc_shmem_tx;
volatile struct scmi_shmem *sc_shmem_rx;
kmutex_t sc_shmem_tx_lock;
kmutex_t sc_shmem_rx_lock;
uint32_t sc_smc_id;
void *sc_mbox_tx;
int (*sc_mbox_tx_send)(void *);
void *sc_mbox_rx;
int (*sc_mbox_rx_send)(void *);
size_t sc_perf_ndmap;
struct scmi_perf_domain_map *sc_perf_dmap;
uint16_t sc_ver_major;
uint16_t sc_ver_minor;
#if notyet
/* SCMI_CLOCK */
struct clock_device sc_cd;
#endif
/* SCMI_PERF */
int sc_perf_power_unit;
#define SCMI_POWER_UNIT_UW 0x2
#define SCMI_POWER_UNIT_MW 0x1
#define SCMI_POWER_UNIT_NONE 0x0
size_t sc_perf_ndomains;
struct scmi_perf_domain *sc_perf_domains;
int32_t (*sc_command)(struct scmi_softc *);
};
int scmi_init_smc(struct scmi_softc *);
int scmi_init_mbox(struct scmi_softc *);
void scmi_attach_perf(struct scmi_softc *);
