From fa911ebe72ec9f8b82947ebc99daf1d0ec2f53e2 Mon Sep 17 00:00:00 2001 From: Joshua Yeong Date: Mon, 13 Oct 2025 23:31:36 +0800 Subject: [PATCH] lib: utils: Add MPXY RPMI mailbox driver for voltage Add voltage service group for RPMI/MPXY support Signed-off-by: Joshua Yeong Reviewed-by: Rahul Pathak Link: https://lore.kernel.org/r/20251013153138.1574512-2-joshua.yeong@starfivetech.com Signed-off-by: Anup Patel --- include/sbi_utils/mailbox/rpmi_msgprot.h | 81 ++++++++++++++++++++++++ lib/utils/mpxy/Kconfig | 4 ++ lib/utils/mpxy/fdt_mpxy_rpmi_voltage.c | 77 ++++++++++++++++++++++ lib/utils/mpxy/objects.mk | 3 + platform/generic/configs/defconfig | 1 + 5 files changed, 166 insertions(+) create mode 100644 lib/utils/mpxy/fdt_mpxy_rpmi_voltage.c diff --git a/include/sbi_utils/mailbox/rpmi_msgprot.h b/include/sbi_utils/mailbox/rpmi_msgprot.h index a761b560..6b5a553c 100644 --- a/include/sbi_utils/mailbox/rpmi_msgprot.h +++ b/include/sbi_utils/mailbox/rpmi_msgprot.h @@ -216,6 +216,7 @@ enum rpmi_servicegroup_id { RPMI_SRVGRP_SYSTEM_SUSPEND = 0x0004, RPMI_SRVGRP_HSM = 0x0005, RPMI_SRVGRP_CPPC = 0x0006, + RPMI_SRVGRP_VOLTAGE = 0x00007, RPMI_SRVGRP_CLOCK = 0x0008, RPMI_SRVGRP_ID_MAX_COUNT, @@ -611,6 +612,86 @@ struct rpmi_cppc_hart_list_resp { u32 hartid[(RPMI_MSG_DATA_SIZE(RPMI_SLOT_SIZE_MIN) - (sizeof(u32) * 3)) / sizeof(u32)]; }; +/** RPMI Voltage ServiceGroup Service IDs */ +enum rpmi_voltage_service_id { + RPMI_VOLTAGE_SRV_ENABLE_NOTIFICATION = 0x01, + RPMI_VOLTAGE_SRV_GET_NUM_DOMAINS = 0x02, + RPMI_VOLTAGE_SRV_GET_ATTRIBUTES = 0x03, + RPMI_VOLTAGE_SRV_GET_SUPPORTED_LEVELS = 0x04, + RPMI_VOLTAGE_SRV_SET_CONFIG = 0x05, + RPMI_VOLTAGE_SRV_GET_CONFIG = 0x06, + RPMI_VOLTAGE_SRV_SET_LEVEL = 0x07, + RPMI_VOLTAGE_SRV_GET_LEVEL = 0x08, + RPMI_VOLTAGE_SRV_MAX_COUNT, +}; + +struct rpmi_voltage_get_num_domains_resp { + s32 status; + u32 num_domains; +}; + +struct rpmi_voltage_get_attributes_req { + u32 domain_id; +}; + +struct rpmi_voltage_get_attributes_resp { + s32 status; + u32 flags; + u32 num_levels; + u32 transition_latency; + u8 name[16]; +}; + +struct rpmi_voltage_get_supported_rate_req { + u32 domain_id; + u32 index; +}; + +struct rpmi_voltage_get_supported_rate_resp { + s32 status; + u32 flags; + u32 remaining; + u32 returned; + u32 level[0]; +}; + +struct rpmi_voltage_set_config_req { + u32 domain_id; +#define RPMI_CLOCK_CONFIG_ENABLE (1U << 0) + u32 config; +}; + +struct rpmi_voltage_set_config_resp { + s32 status; +}; + +struct rpmi_voltage_get_config_req { + u32 domain_id; +}; + +struct rpmi_voltage_get_config_resp { + s32 status; + u32 config; +}; + +struct rpmi_voltage_set_level_req { + u32 domain_id; + s32 level; +}; + +struct rpmi_voltage_set_level_resp { + s32 status; +}; + +struct rpmi_voltage_get_level_req { + u32 domain_id; +}; + +struct rpmi_voltage_get_level_resp { + s32 status; + s32 level; +}; + /** RPMI Clock ServiceGroup Service IDs */ enum rpmi_clock_service_id { RPMI_CLOCK_SRV_ENABLE_NOTIFICATION = 0x01, diff --git a/lib/utils/mpxy/Kconfig b/lib/utils/mpxy/Kconfig index 8d1f5183..f720af2c 100644 --- a/lib/utils/mpxy/Kconfig +++ b/lib/utils/mpxy/Kconfig @@ -22,6 +22,10 @@ config FDT_MPXY_RPMI_SYSMSI bool "MPXY driver for RPMI system MSI service group" default n +config FDT_MPXY_RPMI_VOLTAGE + bool "MPXY driver for RPMI voltage service group" + default n + endif endmenu diff --git a/lib/utils/mpxy/fdt_mpxy_rpmi_voltage.c b/lib/utils/mpxy/fdt_mpxy_rpmi_voltage.c new file mode 100644 index 00000000..90673975 --- /dev/null +++ b/lib/utils/mpxy/fdt_mpxy_rpmi_voltage.c @@ -0,0 +1,77 @@ +#include + +static struct mpxy_rpmi_service_data voltage_services[] = { +{ + .id = RPMI_VOLTAGE_SRV_ENABLE_NOTIFICATION, + .min_tx_len = sizeof(struct rpmi_enable_notification_req), + .max_tx_len = sizeof(struct rpmi_enable_notification_req), + .min_rx_len = sizeof(struct rpmi_enable_notification_resp), + .max_rx_len = sizeof(struct rpmi_enable_notification_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_GET_NUM_DOMAINS, + .min_tx_len = 0, + .max_tx_len = 0, + .min_rx_len = sizeof(struct rpmi_voltage_get_num_domains_resp), + .max_rx_len = sizeof(struct rpmi_voltage_get_num_domains_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_GET_ATTRIBUTES, + .min_tx_len = sizeof(struct rpmi_voltage_get_attributes_req), + .max_tx_len = sizeof(struct rpmi_voltage_get_attributes_req), + .min_rx_len = sizeof(struct rpmi_voltage_get_attributes_resp), + .max_rx_len = sizeof(struct rpmi_voltage_get_attributes_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_GET_SUPPORTED_LEVELS, + .min_tx_len = sizeof(struct rpmi_voltage_get_supported_rate_req), + .max_tx_len = sizeof(struct rpmi_voltage_get_supported_rate_req), + .min_rx_len = sizeof(struct rpmi_voltage_get_supported_rate_resp), + .max_rx_len = -1U, +}, +{ + .id = RPMI_VOLTAGE_SRV_SET_CONFIG, + .min_tx_len = sizeof(struct rpmi_voltage_set_config_req), + .max_tx_len = sizeof(struct rpmi_voltage_set_config_req), + .min_rx_len = sizeof(struct rpmi_voltage_set_config_resp), + .max_rx_len = sizeof(struct rpmi_voltage_set_config_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_GET_CONFIG, + .min_tx_len = sizeof(struct rpmi_voltage_get_config_req), + .max_tx_len = sizeof(struct rpmi_voltage_get_config_req), + .min_rx_len = sizeof(struct rpmi_voltage_get_config_resp), + .max_rx_len = sizeof(struct rpmi_voltage_get_config_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_SET_LEVEL, + .min_tx_len = sizeof(struct rpmi_voltage_set_level_req), + .max_tx_len = sizeof(struct rpmi_voltage_set_level_req), + .min_rx_len = sizeof(struct rpmi_voltage_set_level_resp), + .max_rx_len = sizeof(struct rpmi_voltage_set_level_resp), +}, +{ + .id = RPMI_VOLTAGE_SRV_GET_LEVEL, + .min_tx_len = sizeof(struct rpmi_voltage_get_level_req), + .max_tx_len = sizeof(struct rpmi_voltage_get_level_req), + .min_rx_len = sizeof(struct rpmi_voltage_get_level_resp), + .max_rx_len = sizeof(struct rpmi_voltage_get_level_resp), +}, +}; + +static const struct mpxy_rpmi_mbox_data voltage_data = { + .servicegrp_id = RPMI_SRVGRP_VOLTAGE, + .num_services = RPMI_VOLTAGE_SRV_MAX_COUNT, + .service_data = voltage_services, +}; + +static const struct fdt_match voltage_match[] = { + { .compatible = "riscv,rpmi-mpxy-voltage", .data = &voltage_data }, + { }, +}; + +const struct fdt_driver fdt_mpxy_rpmi_voltage = { + .experimental = true, + .match_table = voltage_match, + .init = mpxy_rpmi_mbox_init, +}; diff --git a/lib/utils/mpxy/objects.mk b/lib/utils/mpxy/objects.mk index 5b6e9bdf..a71c56af 100644 --- a/lib/utils/mpxy/objects.mk +++ b/lib/utils/mpxy/objects.mk @@ -17,3 +17,6 @@ libsbiutils-objs-$(CONFIG_FDT_MPXY_RPMI_CLOCK) += mpxy/fdt_mpxy_rpmi_clock.o carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_RPMI_SYSMSI) += fdt_mpxy_rpmi_sysmsi libsbiutils-objs-$(CONFIG_FDT_MPXY_RPMI_SYSMSI) += mpxy/fdt_mpxy_rpmi_sysmsi.o + +carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_RPMI_VOLTAGE) += fdt_mpxy_rpmi_voltage +libsbiutils-objs-$(CONFIG_FDT_MPXY_RPMI_VOLTAGE) += mpxy/fdt_mpxy_rpmi_voltage.o diff --git a/platform/generic/configs/defconfig b/platform/generic/configs/defconfig index 569f9697..19039168 100644 --- a/platform/generic/configs/defconfig +++ b/platform/generic/configs/defconfig @@ -64,4 +64,5 @@ CONFIG_FDT_TIMER_PLMT=y CONFIG_FDT_MPXY=y CONFIG_FDT_MPXY_RPMI_MBOX=y CONFIG_FDT_MPXY_RPMI_CLOCK=y +CONFIG_FDT_MPXY_RPMI_VOLTAGE=y CONFIG_FDT_MPXY_RPMI_SYSMSI=y