From a28e51016e7715f2baeea18a07cef93a7cb603af Mon Sep 17 00:00:00 2001 From: Joshua Yeong Date: Mon, 13 Oct 2025 23:31:37 +0800 Subject: [PATCH] lib: utils: Add MPXY RPMI mailbox driver for device power Add MPXY RPMI mailbox driver for device power. Signed-off-by: Joshua Yeong Reviewed-by: Rahul Pathak Link: https://lore.kernel.org/r/20251013153138.1574512-3-joshua.yeong@starfivetech.com Signed-off-by: Anup Patel --- include/sbi_utils/mailbox/rpmi_msgprot.h | 45 +++++++++++++++++ lib/utils/mpxy/Kconfig | 4 ++ lib/utils/mpxy/fdt_mpxy_rpmi_device_power.c | 56 +++++++++++++++++++++ lib/utils/mpxy/objects.mk | 3 ++ platform/generic/configs/defconfig | 1 + 5 files changed, 109 insertions(+) create mode 100644 lib/utils/mpxy/fdt_mpxy_rpmi_device_power.c diff --git a/include/sbi_utils/mailbox/rpmi_msgprot.h b/include/sbi_utils/mailbox/rpmi_msgprot.h index 6b5a553c..4e915a08 100644 --- a/include/sbi_utils/mailbox/rpmi_msgprot.h +++ b/include/sbi_utils/mailbox/rpmi_msgprot.h @@ -218,6 +218,7 @@ enum rpmi_servicegroup_id { RPMI_SRVGRP_CPPC = 0x0006, RPMI_SRVGRP_VOLTAGE = 0x00007, RPMI_SRVGRP_CLOCK = 0x0008, + RPMI_SRVGRP_DEVICE_POWER = 0x0009, RPMI_SRVGRP_ID_MAX_COUNT, /* Reserved range for service groups */ @@ -784,4 +785,48 @@ struct rpmi_clock_get_rate_resp { u32 clock_rate_high; }; +/** RPMI Device Power ServiceGroup Service IDs */ +enum rpmi_dpwr_service_id { + RPMI_DPWR_SRV_ENABLE_NOTIFICATION = 0x01, + RPMI_DPWR_SRV_GET_NUM_DOMAINS = 0x02, + RPMI_DPWR_SRV_GET_ATTRIBUTES = 0x03, + RPMI_DPWR_SRV_SET_STATE = 0x04, + RPMI_DPWR_SRV_GET_STATE = 0x05, + RPMI_DPWR_SRV_MAX_COUNT, +}; + +struct rpmi_dpwr_get_num_domain_resp { + s32 status; + u32 num_domain; +}; + +struct rpmi_dpwr_get_attrs_req { + u32 domain_id; +}; + +struct rpmi_dpwr_get_attrs_resp { + s32 status; + u32 flags; + u32 transition_latency; + u8 name[16]; +}; + +struct rpmi_dpwr_set_state_req { + u32 domain_id; + u32 state; +}; + +struct rpmi_dpwr_set_state_resp { + s32 status; +}; + +struct rpmi_dpwr_get_state_req { + u32 domain_id; +}; + +struct rpmi_dpwr_get_state_resp { + s32 status; + u32 state; +}; + #endif /* !__RPMI_MSGPROT_H__ */ diff --git a/lib/utils/mpxy/Kconfig b/lib/utils/mpxy/Kconfig index f720af2c..25288671 100644 --- a/lib/utils/mpxy/Kconfig +++ b/lib/utils/mpxy/Kconfig @@ -26,6 +26,10 @@ config FDT_MPXY_RPMI_VOLTAGE bool "MPXY driver for RPMI voltage service group" default n +config FDT_MPXY_RPMI_DEVICE_POWER + bool "MPXY driver for RPMI device power service group" + default n + endif endmenu diff --git a/lib/utils/mpxy/fdt_mpxy_rpmi_device_power.c b/lib/utils/mpxy/fdt_mpxy_rpmi_device_power.c new file mode 100644 index 00000000..6ffcb403 --- /dev/null +++ b/lib/utils/mpxy/fdt_mpxy_rpmi_device_power.c @@ -0,0 +1,56 @@ +#include + +static struct mpxy_rpmi_service_data dpwr_services[] = { +{ + .id = RPMI_DPWR_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_DPWR_SRV_GET_NUM_DOMAINS, + .min_tx_len = 0, + .max_tx_len = 0, + .min_rx_len = sizeof(struct rpmi_dpwr_get_num_domain_resp), + .max_rx_len = sizeof(struct rpmi_dpwr_get_num_domain_resp), +}, +{ + .id = RPMI_DPWR_SRV_GET_ATTRIBUTES, + .min_tx_len = sizeof(struct rpmi_dpwr_get_attrs_req), + .max_tx_len = sizeof(struct rpmi_dpwr_get_attrs_req), + .min_rx_len = sizeof(struct rpmi_dpwr_get_attrs_resp), + .max_rx_len = sizeof(struct rpmi_dpwr_get_attrs_resp), +}, +{ + .id = RPMI_DPWR_SRV_SET_STATE, + .min_tx_len = sizeof(struct rpmi_dpwr_set_state_req), + .max_tx_len = sizeof(struct rpmi_dpwr_set_state_req), + .min_rx_len = sizeof(struct rpmi_dpwr_set_state_resp), + .max_rx_len = sizeof(struct rpmi_dpwr_set_state_resp), +}, +{ + .id = RPMI_DPWR_SRV_GET_STATE, + .min_tx_len = sizeof(struct rpmi_dpwr_get_state_req), + .max_tx_len = sizeof(struct rpmi_dpwr_get_state_req), + .min_rx_len = sizeof(struct rpmi_dpwr_get_state_resp), + .max_rx_len = sizeof(struct rpmi_dpwr_get_state_resp), +}, +}; + +static const struct mpxy_rpmi_mbox_data dpwr_data = { + .servicegrp_id = RPMI_SRVGRP_DEVICE_POWER, + .num_services = RPMI_DPWR_SRV_MAX_COUNT, + .service_data = dpwr_services, +}; + +static const struct fdt_match dpwr_match[] = { + { .compatible = "riscv,rpmi-mpxy-device-power", .data = &dpwr_data }, + { }, +}; + +const struct fdt_driver fdt_mpxy_rpmi_device_power = { + .experimental = true, + .match_table = dpwr_match, + .init = mpxy_rpmi_mbox_init, +}; diff --git a/lib/utils/mpxy/objects.mk b/lib/utils/mpxy/objects.mk index a71c56af..45b3281b 100644 --- a/lib/utils/mpxy/objects.mk +++ b/lib/utils/mpxy/objects.mk @@ -20,3 +20,6 @@ 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-$(CONFIG_FDT_MPXY_RPMI_VOLTAGE) += mpxy/fdt_mpxy_rpmi_voltage.o + +carray-fdt_mpxy_drivers-$(CONFIG_FDT_MPXY_RPMI_DEVICE_POWER) += fdt_mpxy_rpmi_device_power +libsbiutils-objs-$(CONFIG_FDT_MPXY_RPMI_DEVICE_POWER) += mpxy/fdt_mpxy_rpmi_device_power.o diff --git a/platform/generic/configs/defconfig b/platform/generic/configs/defconfig index 19039168..92dd9e68 100644 --- a/platform/generic/configs/defconfig +++ b/platform/generic/configs/defconfig @@ -65,4 +65,5 @@ 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_DEVICE_POWER=y CONFIG_FDT_MPXY_RPMI_SYSMSI=y