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It is usually used to allow one LM to manager another used as an offload or accelerator engine. Signed-off-by: Peng Fan --- drivers/firmware/arm_scmi/vendors/imx/Kconfig | 11 + drivers/firmware/arm_scmi/vendors/imx/Makefile | 1 + drivers/firmware/arm_scmi/vendors/imx/imx-sm-lmm.c | 235 +++++++++++++++++= ++++ include/linux/scmi_imx_protocol.h | 29 +++ 4 files changed, 276 insertions(+) diff --git a/drivers/firmware/arm_scmi/vendors/imx/Kconfig b/drivers/firmwa= re/arm_scmi/vendors/imx/Kconfig index a01bf5e47301d2f93c9bfc7eebc77e083ea4ed75..1a936fc87d2350e2a21bccd45df= beebfa3b90286 100644 --- a/drivers/firmware/arm_scmi/vendors/imx/Kconfig +++ b/drivers/firmware/arm_scmi/vendors/imx/Kconfig @@ -12,6 +12,17 @@ config IMX_SCMI_BBM_EXT To compile this driver as a module, choose M here: the module will be called imx-sm-bbm. =20 +config IMX_SCMI_LMM_EXT + tristate "i.MX SCMI LMM EXTENSION" + depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) + default y if ARCH_MXC + help + This enables i.MX System Logical Machine Protocol to + manage Logical Machines boot, shutdown and etc. + + To compile this driver as a module, choose M here: the + module will be called imx-sm-lmm. + config IMX_SCMI_MISC_EXT tristate "i.MX SCMI MISC EXTENSION" depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) diff --git a/drivers/firmware/arm_scmi/vendors/imx/Makefile b/drivers/firmw= are/arm_scmi/vendors/imx/Makefile index d3ee6d5449244a4f5cdf6abcf1845f312c512325..f39a99ccaf9af757475e8b112d2= 24669444d7ddc 100644 --- a/drivers/firmware/arm_scmi/vendors/imx/Makefile +++ b/drivers/firmware/arm_scmi/vendors/imx/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_IMX_SCMI_BBM_EXT) +=3D imx-sm-bbm.o +obj-$(CONFIG_IMX_SCMI_LMM_EXT) +=3D imx-sm-lmm.o obj-$(CONFIG_IMX_SCMI_MISC_EXT) +=3D imx-sm-misc.o diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-lmm.c b/drivers/f= irmware/arm_scmi/vendors/imx/imx-sm-lmm.c new file mode 100644 index 0000000000000000000000000000000000000000..808cbedba5de4b4314948c06c60= bebea057efbe7 --- /dev/null +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-lmm.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * System control and Management Interface (SCMI) NXP LMM Protocol + * + * Copyright 2025 NXP + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "../../protocols.h" +#include "../../notify.h" + +#define SCMI_PROTOCOL_SUPPORTED_VERSION 0x10000 + +enum scmi_imx_lmm_protocol_cmd { + SCMI_IMX_LMM_ATTRIBUTES =3D 0x3, + SCMI_IMX_LMM_BOOT =3D 0x4, + SCMI_IMX_LMM_RESET =3D 0x5, + SCMI_IMX_LMM_SHUTDOWN =3D 0x6, + SCMI_IMX_LMM_WAKE =3D 0x7, + SCMI_IMX_LMM_SUSPEND =3D 0x8, + SCMI_IMX_LMM_NOTIFY =3D 0x9, + SCMI_IMX_LMM_RESET_REASON =3D 0xA, + SCMI_IMX_LMM_POWER_ON =3D 0xB, +}; + +struct scmi_imx_lmm_priv { + u32 nr_lmm; +}; + +#define SCMI_IMX_LMM_PROTO_ATTR_NUM_LM(x) (((x) & 0xFFU)) +struct scmi_msg_imx_lmm_protocol_attributes { + __le32 attributes; +}; + +struct scmi_msg_imx_lmm_attributes_out { + __le32 lmid; + __le32 attributes; + __le32 state; + __le32 errstatus; + u8 name[LMM_MAX_NAME]; +}; + +struct scmi_imx_lmm_shutdown_in { + __le32 lmid; +#define LMM_FLAGS_GRACEFUL(x) ((x) & BIT(0)) + __le32 flags; +}; + +static int scmi_imx_lmm_validate_lmid(const struct scmi_protocol_handle *p= h, u32 lmid) +{ + struct scmi_imx_lmm_priv *priv =3D ph->get_priv(ph); + + if (lmid >=3D priv->nr_lmm) + return -EINVAL; + + return 0; +} + +static int scmi_imx_lmm_attributes(const struct scmi_protocol_handle *ph, + u32 lmid, struct scmi_imx_lmm_info *info) +{ + struct scmi_msg_imx_lmm_attributes_out *out; + struct scmi_xfer *t; + int ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_LMM_ATTRIBUTES, sizeof(u32),= 0, &t); + if (ret) + return ret; + + put_unaligned_le32(lmid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + if (!ret) { + out =3D t->rx.buf; + info->lmid =3D le32_to_cpu(out->lmid); + info->state =3D le32_to_cpu(out->state); + info->errstatus =3D le32_to_cpu(out->errstatus); + strscpy(info->name, out->name); + dev_dbg(ph->dev, "i.MX LMM: Logical Machine(%d), name: %s\n", + info->lmid, out->name); + } else { + dev_err(ph->dev, "i.MX LMM: Failed to get info of Logical Machine(%u)\n"= , lmid); + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_lmm_boot(const struct scmi_protocol_handle *ph, u32 lm= id) +{ + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_lmm_validate_lmid(ph, lmid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_LMM_BOOT, sizeof(u32), + 0, &t); + if (ret) + return ret; + + put_unaligned_le32(lmid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_lmm_power_on(const struct scmi_protocol_handle *ph, u3= 2 lmid) +{ + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_lmm_validate_lmid(ph, lmid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_LMM_POWER_ON, sizeof(u32), + 0, &t); + if (ret) + return ret; + + put_unaligned_le32(lmid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_lmm_shutdown(const struct scmi_protocol_handle *ph, u3= 2 lmid, + u32 flags) +{ + struct scmi_imx_lmm_shutdown_in *in; + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_lmm_validate_lmid(ph, lmid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_LMM_SHUTDOWN, sizeof(*in), + 0, &t); + if (ret) + return ret; + + in =3D t->tx.buf; + in->lmid =3D cpu_to_le32(lmid); + in->flags =3D cpu_to_le32(flags); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static const struct scmi_imx_lmm_proto_ops scmi_imx_lmm_proto_ops =3D { + .lmm_boot =3D scmi_imx_lmm_boot, + .lmm_info =3D scmi_imx_lmm_attributes, + .lmm_power_on =3D scmi_imx_lmm_power_on, + .lmm_shutdown =3D scmi_imx_lmm_shutdown, +}; + +static int scmi_imx_lmm_protocol_attributes_get(const struct scmi_protocol= _handle *ph, + struct scmi_imx_lmm_priv *priv) +{ + struct scmi_msg_imx_lmm_protocol_attributes *attr; + struct scmi_xfer *t; + int ret; + + ret =3D ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES, 0, + sizeof(*attr), &t); + if (ret) + return ret; + + attr =3D t->rx.buf; + + ret =3D ph->xops->do_xfer(ph, t); + if (!ret) { + priv->nr_lmm =3D SCMI_IMX_LMM_PROTO_ATTR_NUM_LM(attr->attributes); + dev_info(ph->dev, "i.MX LMM: %d Logical Machines\n", + priv->nr_lmm); + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_lmm_protocol_init(const struct scmi_protocol_handle *p= h) +{ + struct scmi_imx_lmm_priv *info; + u32 version; + int ret; + + ret =3D ph->xops->version_get(ph, &version); + if (ret) + return ret; + + dev_info(ph->dev, "NXP SM LMM Version %d.%d\n", + PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version)); + + info =3D devm_kzalloc(ph->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + ret =3D scmi_imx_lmm_protocol_attributes_get(ph, info); + if (ret) + return ret; + + return ph->set_priv(ph, info, version); +} + +static const struct scmi_protocol scmi_imx_lmm =3D { + .id =3D SCMI_PROTOCOL_IMX_LMM, + .owner =3D THIS_MODULE, + .instance_init =3D &scmi_imx_lmm_protocol_init, + .ops =3D &scmi_imx_lmm_proto_ops, + .supported_version =3D SCMI_PROTOCOL_SUPPORTED_VERSION, + .vendor_id =3D SCMI_IMX_VENDOR, + .sub_vendor_id =3D SCMI_IMX_SUBVENDOR, +}; +module_scmi_protocol(scmi_imx_lmm); + +MODULE_DESCRIPTION("i.MX SCMI LMM driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_pro= tocol.h index 53b356a26414279f4aaaa8287c32209ed1ad57b4..456559f021696ae51f40ed11e6f= 85089d430ce71 100644 --- a/include/linux/scmi_imx_protocol.h +++ b/include/linux/scmi_imx_protocol.h @@ -11,8 +11,10 @@ #include #include #include +#include #include =20 +#define SCMI_PROTOCOL_IMX_LMM 0x80 #define SCMI_PROTOCOL_IMX_BBM 0x81 #define SCMI_PROTOCOL_IMX_MISC 0x84 =20 @@ -57,4 +59,31 @@ struct scmi_imx_misc_proto_ops { int (*misc_ctrl_req_notify)(const struct scmi_protocol_handle *ph, u32 ctrl_id, u32 evt_id, u32 flags); }; + +#define LMM_ID_DISCOVER 0xFFFFFFFFU +#define LMM_MAX_NAME 16 + +enum scmi_imx_lmm_state { + LMM_STATE_LM_OFF, + LMM_STATE_LM_ON, + LMM_STATE_LM_SUSPEND, + LMM_STATE_LM_POWERED, +}; + +struct scmi_imx_lmm_info { + u32 lmid; + enum scmi_imx_lmm_state state; + u32 errstatus; + u8 name[LMM_MAX_NAME]; +}; + +struct scmi_imx_lmm_proto_ops { + int (*lmm_boot)(const struct scmi_protocol_handle *ph, u32 lmid); + int (*lmm_info)(const struct scmi_protocol_handle *ph, u32 lmid, + struct scmi_imx_lmm_info *info); + int (*lmm_power_on)(const struct scmi_protocol_handle *ph, u32 lmid); + int (*lmm_shutdown)(const struct scmi_protocol_handle *ph, u32 lmid, + u32 flags); +}; + #endif --=20 2.37.1 From nobody Fri Dec 19 21:49:06 2025 Received: from EUR02-DB5-obe.outbound.protection.outlook.com (mail-db5eur02on2069.outbound.protection.outlook.com [40.107.249.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A607D1F429B; 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It is used to manage auxiliary CPUs in an LM (e.g. additional cores in an AP cluster). Signed-off-by: Peng Fan --- drivers/firmware/arm_scmi/vendors/imx/Kconfig | 13 +- drivers/firmware/arm_scmi/vendors/imx/Makefile | 1 + drivers/firmware/arm_scmi/vendors/imx/imx-sm-cpu.c | 283 +++++++++++++++++= ++++ include/linux/scmi_imx_protocol.h | 10 + 4 files changed, 306 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/arm_scmi/vendors/imx/Kconfig b/drivers/firmwa= re/arm_scmi/vendors/imx/Kconfig index 1a936fc87d2350e2a21bccd45dfbeebfa3b90286..9070522510e4d3f3d7276a7581f= 8676006d20f90 100644 --- a/drivers/firmware/arm_scmi/vendors/imx/Kconfig +++ b/drivers/firmware/arm_scmi/vendors/imx/Kconfig @@ -12,6 +12,17 @@ config IMX_SCMI_BBM_EXT To compile this driver as a module, choose M here: the module will be called imx-sm-bbm. =20 +config IMX_SCMI_CPU_EXT + tristate "i.MX SCMI CPU EXTENSION" + depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) + default y if ARCH_MXC + help + This enables i.MX System CPU Protocol to manage cpu + start, stop and etc. + + To compile this driver as a module, choose M here: the + module will be called imx-sm-cpu. + config IMX_SCMI_LMM_EXT tristate "i.MX SCMI LMM EXTENSION" depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) @@ -21,7 +32,7 @@ config IMX_SCMI_LMM_EXT manage Logical Machines boot, shutdown and etc. =20 To compile this driver as a module, choose M here: the - module will be called imx-sm-lmm. + module will be called imx-sm-cpu. =20 config IMX_SCMI_MISC_EXT tristate "i.MX SCMI MISC EXTENSION" diff --git a/drivers/firmware/arm_scmi/vendors/imx/Makefile b/drivers/firmw= are/arm_scmi/vendors/imx/Makefile index f39a99ccaf9af757475e8b112d224669444d7ddc..e3a5ea46345c89da1afae25e556= 98044672b7c28 100644 --- a/drivers/firmware/arm_scmi/vendors/imx/Makefile +++ b/drivers/firmware/arm_scmi/vendors/imx/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_IMX_SCMI_BBM_EXT) +=3D imx-sm-bbm.o +obj-$(CONFIG_IMX_SCMI_CPU_EXT) +=3D imx-sm-cpu.o obj-$(CONFIG_IMX_SCMI_LMM_EXT) +=3D imx-sm-lmm.o obj-$(CONFIG_IMX_SCMI_MISC_EXT) +=3D imx-sm-misc.o diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-cpu.c b/drivers/f= irmware/arm_scmi/vendors/imx/imx-sm-cpu.c new file mode 100644 index 0000000000000000000000000000000000000000..e3f294c2cb69a5b5a916d55984f= 4a63539937d02 --- /dev/null +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-cpu.c @@ -0,0 +1,283 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * System control and Management Interface (SCMI) NXP CPU Protocol + * + * Copyright 2025 NXP + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "../../protocols.h" +#include "../../notify.h" + +#define SCMI_PROTOCOL_SUPPORTED_VERSION 0x10000 + +enum scmi_imx_cpu_protocol_cmd { + SCMI_IMX_CPU_ATTRIBUTES =3D 0x3, + SCMI_IMX_CPU_START =3D 0x4, + SCMI_IMX_CPU_STOP =3D 0x5, + SCMI_IMX_CPU_RESET_VECTOR_SET =3D 0x6, + SCMI_IMX_CPU_INFO_GET =3D 0xC, +}; + +struct scmi_imx_cpu_info { + u32 nr_cpu; +}; + +#define SCMI_IMX_CPU_PROTO_ATTR_NUM_CPUS(x) ((x) & 0xFFFF) +struct scmi_msg_imx_cpu_protocol_attributes { + __le32 attributes; +}; + +struct scmi_msg_imx_cpu_attributes_out { + __le32 attributes; +#define CPU_MAX_NAME 16 + u8 name[CPU_MAX_NAME]; +}; + +struct scmi_imx_cpu_reset_vector_set_in { + __le32 cpuid; +#define CPU_VEC_FLAGS_RESUME BIT(31) +#define CPU_VEC_FLAGS_START BIT(30) +#define CPU_VEC_FLAGS_BOOT BIT(29) + __le32 flags; + __le32 resetvectorlow; + __le32 resetvectorhigh; +}; + +struct scmi_imx_cpu_info_get_out { +#define CPU_RUN_MODE_START 0 +#define CPU_RUN_MODE_HOLD 1 +#define CPU_RUN_MODE_STOP 2 +#define CPU_RUN_MODE_SLEEP 3 + __le32 runmode; + __le32 sleepmode; + __le32 resetvectorlow; + __le32 resetvectorhigh; +}; + +static int scmi_imx_cpu_validate_cpuid(const struct scmi_protocol_handle *= ph, + u32 cpuid) +{ + struct scmi_imx_cpu_info *info =3D ph->get_priv(ph); + + if (cpuid >=3D info->nr_cpu) + return -EINVAL; + + return 0; +} + +static int scmi_imx_cpu_start(const struct scmi_protocol_handle *ph, u32 c= puid) +{ + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_cpu_validate_cpuid(ph, cpuid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_CPU_START, sizeof(u32), + 0, &t); + if (ret) + return ret; + + put_unaligned_le32(cpuid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_cpu_stop(const struct scmi_protocol_handle *ph, u32 cp= uid) +{ + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_cpu_validate_cpuid(ph, cpuid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_CPU_STOP, sizeof(u32), + 0, &t); + if (ret) + return ret; + + put_unaligned_le32(cpuid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_cpu_reset_vector_set(const struct scmi_protocol_handle= *ph, + u32 cpuid, u64 vector, bool start, + bool boot, bool resume) +{ + struct scmi_imx_cpu_reset_vector_set_in *in; + struct scmi_xfer *t; + int ret; + + ret =3D scmi_imx_cpu_validate_cpuid(ph, cpuid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_CPU_RESET_VECTOR_SET, sizeof= (*in), + 0, &t); + if (ret) + return ret; + + in =3D t->tx.buf; + in->cpuid =3D cpu_to_le32(cpuid); + in->flags =3D start ? CPU_VEC_FLAGS_START : 0; + in->flags |=3D boot ? CPU_VEC_FLAGS_BOOT : 0; + in->flags |=3D resume ? CPU_VEC_FLAGS_BOOT : 0; + in->resetvectorlow =3D cpu_to_le32(lower_32_bits(vector)); + in->resetvectorhigh =3D cpu_to_le32(upper_32_bits(vector)); + ret =3D ph->xops->do_xfer(ph, t); + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_cpu_started(const struct scmi_protocol_handle *ph, u32= cpuid, + bool *started) +{ + struct scmi_imx_cpu_info_get_out *out; + struct scmi_xfer *t; + int ret; + + *started =3D false; + ret =3D scmi_imx_cpu_validate_cpuid(ph, cpuid); + if (ret) + return ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_CPU_INFO_GET, sizeof(u32), + 0, &t); + if (ret) + return ret; + + put_unaligned_le32(cpuid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + if (!ret) { + out =3D t->rx.buf; + if ((out->runmode =3D=3D CPU_RUN_MODE_START) || + (out->runmode =3D=3D CPU_RUN_MODE_SLEEP)) + *started =3D true; + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static const struct scmi_imx_cpu_proto_ops scmi_imx_cpu_proto_ops =3D { + .cpu_reset_vector_set =3D scmi_imx_cpu_reset_vector_set, + .cpu_start =3D scmi_imx_cpu_start, + .cpu_started =3D scmi_imx_cpu_started, + .cpu_stop =3D scmi_imx_cpu_stop, +}; + +static int scmi_imx_cpu_protocol_attributes_get(const struct scmi_protocol= _handle *ph, + struct scmi_imx_cpu_info *info) +{ + struct scmi_msg_imx_cpu_protocol_attributes *attr; + struct scmi_xfer *t; + int ret; + + ret =3D ph->xops->xfer_get_init(ph, PROTOCOL_ATTRIBUTES, 0, + sizeof(*attr), &t); + if (ret) + return ret; + + attr =3D t->rx.buf; + + ret =3D ph->xops->do_xfer(ph, t); + if (!ret) { + info->nr_cpu =3D SCMI_IMX_CPU_PROTO_ATTR_NUM_CPUS(attr->attributes); + dev_info(ph->dev, "i.MX SM CPU: %d cpus\n", + info->nr_cpu); + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + +static int scmi_imx_cpu_attributes_get(const struct scmi_protocol_handle *= ph, + u32 cpuid, struct scmi_imx_cpu_info *info) +{ + struct scmi_msg_imx_cpu_attributes_out *out; + struct scmi_xfer *t; + int ret; + + ret =3D ph->xops->xfer_get_init(ph, SCMI_IMX_CPU_ATTRIBUTES, sizeof(u32),= 0, &t); + if (ret) + return ret; + + put_unaligned_le32(cpuid, t->tx.buf); + ret =3D ph->xops->do_xfer(ph, t); + if (!ret) { + out =3D t->rx.buf; + dev_info(ph->dev, "i.MX CPU: name: %s\n", out->name); + } else { + dev_err(ph->dev, "i.MX cpu: Failed to get info of cpu(%u)\n", cpuid); + } + + ph->xops->xfer_put(ph, t); + + return ret; +} + + +static int scmi_imx_cpu_protocol_init(const struct scmi_protocol_handle *p= h) +{ + struct scmi_imx_cpu_info *info; + u32 version; + int ret, i; + + ret =3D ph->xops->version_get(ph, &version); + if (ret) + return ret; + + dev_info(ph->dev, "NXP SM CPU Protocol Version %d.%d\n", + PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version)); + + info =3D devm_kzalloc(ph->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + ret =3D scmi_imx_cpu_protocol_attributes_get(ph, info); + if (ret) + return ret; + + for (i =3D 0; i < info->nr_cpu; i++) { + ret =3D scmi_imx_cpu_attributes_get(ph, i, info); + if (ret) + return ret; + } + + return ph->set_priv(ph, info, version); +} + +static const struct scmi_protocol scmi_imx_cpu =3D { + .id =3D SCMI_PROTOCOL_IMX_CPU, + .owner =3D THIS_MODULE, + .instance_init =3D &scmi_imx_cpu_protocol_init, + .ops =3D &scmi_imx_cpu_proto_ops, + .supported_version =3D SCMI_PROTOCOL_SUPPORTED_VERSION, + .vendor_id =3D SCMI_IMX_VENDOR, + .sub_vendor_id =3D SCMI_IMX_SUBVENDOR, +}; +module_scmi_protocol(scmi_imx_cpu); + +MODULE_DESCRIPTION("i.MX SCMI CPU driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_pro= tocol.h index 456559f021696ae51f40ed11e6f85089d430ce71..6521199cdab67c7e751e850def2= 21d89898cd0f2 100644 --- a/include/linux/scmi_imx_protocol.h +++ b/include/linux/scmi_imx_protocol.h @@ -16,6 +16,7 @@ =20 #define SCMI_PROTOCOL_IMX_LMM 0x80 #define SCMI_PROTOCOL_IMX_BBM 0x81 +#define SCMI_PROTOCOL_IMX_CPU 0x82 #define SCMI_PROTOCOL_IMX_MISC 0x84 =20 #define SCMI_IMX_VENDOR "NXP" @@ -86,4 +87,13 @@ struct scmi_imx_lmm_proto_ops { u32 flags); }; =20 +struct scmi_imx_cpu_proto_ops { + int (*cpu_reset_vector_set)(const struct scmi_protocol_handle *ph, + u32 cpuid, u64 vector, bool start, + bool boot, bool resume); + int (*cpu_start)(const struct scmi_protocol_handle *ph, u32 cpuid); + int (*cpu_started)(const struct scmi_protocol_handle *ph, u32 cpuid, + bool *started); + int (*cpu_stop)(const struct scmi_protocol_handle *ph, u32 cpuid); 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Signed-off-by: Peng Fan --- drivers/firmware/arm_scmi/vendors/imx/imx95.rst | 692 ++++++++++++++++++++= ++++ 1 file changed, 692 insertions(+) diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx95.rst b/drivers/firm= ware/arm_scmi/vendors/imx/imx95.rst index b2dfd6c46ca2f5f12f0475c24cb54c060e9fa421..384d4f9c27e489a9c54cdde79c9= f03a6f5979630 100644 --- a/drivers/firmware/arm_scmi/vendors/imx/imx95.rst +++ b/drivers/firmware/arm_scmi/vendors/imx/imx95.rst @@ -32,6 +32,419 @@ port, and deploy the SM on supported processors. The SM implements an interface compliant with the Arm SCMI Specification with additional vendor specific extensions. =20 +SCMI_LMM: System Control and Management Logical Machine Management Vendor = Protocol +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D + +This protocol is intended for boot, shutdown, and reset of other logical +machines (LM). It is usually used to allow one LM to manager another used +as an offload or accelerator engine. Notifications from this protocol can +also be used to manage a communication link to another LM. The LMM protocol +provides functions to: + +- Describe the protocol version. +- Discover implementation attributes. +- Discover the LMs defined in the system. +- Boot an LM. +- Shut down an LM. +- Reset an LM. +- Wake an LM from suspend. +- Suspend an LM (gracefully). +- Request a graceful shutdown or reset of an LM. +- Allow an agent to forcibly power down or reset an LM. +- Read boot/shutdown/reset information for an LM. +- Get notifications when an LM boots or shuts down. + +Commands: +_________ + +PROTOCOL_VERSION +~~~~~~~~~~~~~~~~ + +message_id: 0x0 +protocol_id: 0x80 + ++---------------+---------------------------------------------------------= -----+ +|Return values = | ++---------------+---------------------------------------------------------= -----+ +|Name |Description = | ++---------------+---------------------------------------------------------= -----+ +|int32 status | See ARM SCMI Specification for status code definitions. = | ++---------------+---------------------------------------------------------= -----+ +|uint32 version | For this revision of the specification, this value must = be | +| | 0x10000. = | ++---------------+---------------------------------------------------------= -----+ + +PROTOCOL_ATTRIBUTES +~~~~~~~~~~~~~~~~~~~ + +message_id: 0x1 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status | See ARM SCMI Specification for status code definition= s. | ++------------------+------------------------------------------------------= -----+ +|uint32 attributes |Protocol attributes: = | +| |Bits[31:8] Reserved, must be zero. = | +| |Bits[7:0] Number of Logical Machines = | ++------------------+------------------------------------------------------= -----+ + +PROTOCOL_MESSAGE_ATTRIBUTES +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +message_id: 0x2 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: in case the message is implemented and availa= ble | +| |to use. = | +| |NOT_FOUND: if the message identified by message_id is = | +| |invalid or not implemented = | ++------------------+------------------------------------------------------= -----+ +|uint32 attributes |Flags that are associated with a specific function in = the | +| |protocol. For all functions in this protocol, this = | +| |parameter has a value of 0 = | ++------------------+------------------------------------------------------= -----+ + +LMM_ATTRIBUTES +~~~~~~~~~~~~~~ + +message_id: 0x3 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if valid attributes are returned. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |DENIED: if the agent does not have permission to get i= nfo | +| |for the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_BOOT +~~~~~~~~ + +message_id: 0x4 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully booted. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_RESET +~~~~~~~~~ + +message_id: 0x5 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|uint32 flags |Reset flags: = | +| |Bits[31:1] Reserved, must be zero. = | +| |Bit[0] Graceful request: = | +| |Set to 1 if the request is a graceful request. = | +| |Set to 0 if the request is a forceful request. = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully resets. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_SHUTDOWN +~~~~~~~~~~~~ + +message_id: 0x6 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|uint32 flags |Reset flags: = | +| |Bits[31:1] Reserved, must be zero. = | +| |Bit[0] Graceful request: = | +| |Set to 1 if the request is a graceful request. = | +| |Set to 0 if the request is a forceful request. = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully shutdowns. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_WAKE +~~~~~~~~ + +message_id: 0x7 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully wakes. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_SUSPEND +~~~~~~~~~~~ + +message_id: 0x8 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully suspends. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +LMM_NOTIFY +~~~~~~~~~~ + +message_id: 0x9 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|uint32 flags |Notification flags: = | +| |Bits[31:3] Reserved, must be zero. = | +| |Bit[3] Wake (resume) notification: = | +| |Set to 1 to send notification. = | +| |Set to 0 if no notification. = | +| |Bit[2] Suspend (sleep) notification: = | +| |Set to 1 to send notification. = | +| |Set to 0 if no notification. = | +| |Bit[1] Shutdown (off) notification: = | +| |Set to 1 to send notification. = | +| |Set to 0 if no notification. = | +| |Bit[0] Boot (on) notification: = | +| |Set to 1 to send notification. = | +| |Set to 0 if no notification = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if the notification state successfully update= d. | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if input attributes flag specifies= | +| |unsupported or invalid configurations. = | +| |DENIED: if the agent does not have permission to reque= st | +| |the notification. = | ++------------------+------------------------------------------------------= -----+ + +LMM_RESET_REASON +~~~~~~~~~~~~~~~~ + +message_id: 0xA +protocol_id: 0x80 + ++---------------------+---------------------------------------------------= -----+ +|Parameters = | ++---------------------+---------------------------------------------------= -----+ +|Name |Description = | ++---------------------+---------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++---------------------+---------------------------------------------------= -----+ +|Return values = | ++---------------------+---------------------------------------------------= -----+ +|Name |Description = | ++---------------------+---------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully suspends. = | +| |NOT_FOUND: if lmId not points to a valid logical ma= chine| +| |DENIED: if the agent does not have permission to re= quest| +| |the reset reason. = | ++---------------------+---------------------------------------------------= -----+ +|uint32 bootflags |Boot reason flags. This parameter has the format: = | +| |Bits[31] Valid. = | +| |Set to 1 if the entire reason is valid. = | +| |Set to 0 if the entire reason is not valid. = | +| |Bits[30:29] Reserved, must be zero. = | +| |Bit[28] Valid origin: = | +| |Set to 1 if the origin field is valid. = | +| |Set to 0 if the origin field is not valid. = | +| |Bits[27:24] Origin. = | +| |Bit[23] Valid err ID: = | +| |Set to 1 if the error ID field is valid. = | +| |Set to 0 if the error ID field is not valid. = | +| |Bits[22:8] Error ID. = | +| |Bit[7:0] Reason = | ++---------------------+---------------------------------------------------= -----+ +|uint32 shutdownflags |Shutdown reason flags. This parameter has the forma= t: | +| |Bits[31] Valid. = | +| |Set to 1 if the entire reason is valid. = | +| |Set to 0 if the entire reason is not valid. = | +| |Bits[30:29] Number of valid extended info words. = | +| |Bit[28] Valid origin: = | +| |Set to 1 if the origin field is valid. = | +| |Set to 0 if the origin field is not valid. = | +| |Bits[27:24] Origin. = | +| |Bit[23] Valid err ID: = | +| |Set to 1 if the error ID field is valid. = | +| |Set to 0 if the error ID field is not valid. = | +| |Bits[22:8] Error ID. = | +| |Bit[7:0] Reason = | ++---------------------+---------------------------------------------------= -----+ +|uint32 extinfo[0,20] |Array of extended info words = | ++---------------------+---------------------------------------------------= -----+ + +LMM_POWER_ON +~~~~~~~~~~~~ + +message_id: 0xB +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |ID of the Logical Machine = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if LM successfully suspends. = | +| |NOT_FOUND: if lmId not points to a valid logical machi= ne. | +| |INVALID_PARAMETERS: if lmId is same as the caller. = | +| |DENIED: if the agent does not have permission to manag= e the| +| |the LM specified by lmid. = | ++------------------+------------------------------------------------------= -----+ + +NEGOTIATE_PROTOCOL_VERSION +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +message_id: 0x10 +protocol_id: 0x80 + ++--------------------+----------------------------------------------------= -----+ +|Parameters = | ++--------------------+----------------------------------------------------= -----+ +|Name |Description = | ++--------------------+----------------------------------------------------= -----+ +|uint32 version |The negotiated protocol version the agent intends to= use | ++--------------------+----------------------------------------------------= -----+ +|Return values = | ++--------------------+----------------------------------------------------= -----+ +|Name |Description = | ++--------------------+----------------------------------------------------= -----+ +|int32 status |SUCCESS: if the negotiated protocol version is suppo= rted | +| |by the platform. All commands, responses, and = | +| |notifications post successful return of this command= must| +| |comply with the negotiated version. = | +| |NOT_SUPPORTED: if the protocol version is not suppor= ted. | ++--------------------+----------------------------------------------------= -----+ + +Notifications +_____________ + +LMM_EVENT +~~~~~~~~~ + +message_id: 0x0 +protocol_id: 0x80 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 lmid |Identifier for the LM that caused the transition. = | ++------------------+------------------------------------------------------= -----+ +|uint32 eventlm |Identifier for the LM the event is for. = | ++------------------+------------------------------------------------------= -----+ +|uint32 flags |LM events: = | +| |Bits[31:3] Reserved, must be zero. = | +| |Bit[3] Wake (resume) event: = | +| |1 LM has awakened. = | +| |0 not a wake event. = | +| |Bit[2] Suspend (sleep) event: = | +| |1 LM has suspended. = | +| |0 not a suspend event. = | +| |Bit[1] Shutdown (off) event: = | +| |1 LM has shutdown. = | +| |0 not a shutdown event. = | +| |Bit[0] Boot (on) event: = | +| |1 LM has booted. = | +| |0 not a boot event. = | ++------------------+------------------------------------------------------= -----+ + SCMI_BBM: System Control and Management BBM Vendor Protocol =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 @@ -436,6 +849,285 @@ protocol_id: 0x81 | |0 no button change detected. = | +------------------+------------------------------------------------------= -----+ =20 +SCMI_CPU: System Control and Management CPU Vendor Protocol +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +This protocol allows an agent to start or stop a CPU. It is used to manage +auxiliary CPUs in an LM (e.g. additional cores in an AP cluster), The CPU +protocol provides functions to: + +- Describe the protocol version. +- Discover implementation attributes. +- Discover the CPUs defined in the system. +- Start a CPU. +- Stop a CPU. +- Set the boot and resume addresses for a CPU. +- Set the sleep mode of a CPU. +- Configure wake-up sources for a CPU. +- Configure power domain reactions (LPM mode and retention mask) for a CPU. +- The CPU IDs can be found in the CPU section of the SoC DEVICE: SM Device + Interface. They can also be found in the SoC RM. See the CPU Mode Control + (CMC) list in General Power Controller (GPC) section. + +CPU settings are not aggregated and setting their state is normally exclus= ive +to one client. + +Commands: +_________ + +PROTOCOL_VERSION +~~~~~~~~~~~~~~~~ + +message_id: 0x0 +protocol_id: 0x82 + ++---------------+---------------------------------------------------------= -----+ +|Return values = | ++---------------+---------------------------------------------------------= -----+ +|Name |Description = | ++---------------+---------------------------------------------------------= -----+ +|int32 status | See ARM SCMI Specification for status code definitions. = | ++---------------+---------------------------------------------------------= -----+ +|uint32 version | For this revision of the specification, this value must = be | +| | 0x10000. = | ++---------------+---------------------------------------------------------= -----+ + +PROTOCOL_ATTRIBUTES +~~~~~~~~~~~~~~~~~~~ + +message_id: 0x1 +protocol_id: 0x82 + ++---------------+---------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status | See ARM SCMI Specification for status code definition= s. | ++------------------+------------------------------------------------------= -----+ +|uint32 attributes |Protocol attributes: = | +| |Bits[31:16] Reserved, must be zero. = | +| |Bits[15:0] Number of CPUs = | ++------------------+------------------------------------------------------= -----+ + +PROTOCOL_MESSAGE_ATTRIBUTES +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +message_id: 0x2 +protocol_id: 0x82 + ++---------------+---------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: in case the message is implemented and availa= ble | +| |to use. = | +| |NOT_FOUND: if the message identified by message_id is = | +| |invalid or not implemented = | ++------------------+------------------------------------------------------= -----+ +|uint32 attributes |Flags that are associated with a specific function in = the | +| |protocol. For all functions in this protocol, this = | +| |parameter has a value of 0 = | ++------------------+------------------------------------------------------= -----+ + +CPU_ATTRIBUTES +~~~~~~~~~~~~~~ + +message_id: 0x4 +protocol_id: 0x82 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if valid attributes are returned successfully= . | +| |NOT_FOUND: if the cpuid is not valid. = | ++------------------+------------------------------------------------------= -----+ +|uint32 attributes |Bits[31:0] Reserved, must be zero = | ++------------------+------------------------------------------------------= -----+ +|char name[16] |NULL terminated ASCII string with CPU name up to 16 by= tes | ++------------------+------------------------------------------------------= -----+ + +CPU_START +~~~~~~~~~ + +message_id: 0x4 +protocol_id: 0x82 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if the cpu is started successfully. = | +| |NOT_FOUND: if cpuid is not valid. = | +| |DENIED: the calling agent is not allowed to start this= CPU.| ++------------------+------------------------------------------------------= -----+ + +CPU_STOP +~~~~~~~~ + +message_id: 0x5 +protocol_id: 0x82 + ++------------------+------------------------------------------------------= -----+ +|Parameters = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++------------------+------------------------------------------------------= -----+ +|Return values = | ++------------------+------------------------------------------------------= -----+ +|Name |Description = | ++------------------+------------------------------------------------------= -----+ +|int32 status |SUCCESS: if the cpu is started successfully. = | +| |NOT_FOUND: if cpuid is not valid. = | +| |DENIED: the calling agent is not allowed to stop this = CPU. | ++------------------+------------------------------------------------------= -----+ + +CPU_RESET_VECTOR_SET +~~~~~~~~~~~~~~~~~~~~ + +message_id: 0x6 +protocol_id: 0x82 + ++----------------------+--------------------------------------------------= -----+ +|Parameters = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|uint32 flags |Reset vector flags: = | +| |Bit[31] Resume flag. = | +| |Set to 1 to update the reset vector used on resume= . | +| |Bit[30] Boot flag. = | +| |Set to 1 to update the reset vector used for boot.= | +| |Bits[29:1] Reserved, must be zero. = | +| |Bit[0] Table flag. = | +| |Set to 1 if vector is the vector table base addres= s. | ++----------------------+--------------------------------------------------= -----+ +|uint32 resetVectorLow |Lower vector: = | +| |If bit[0] of flags is 0, the lower 32 bits of the = | +| |physical address where the CPU should execute from= on | +| |reset. If bit[0] of flags is 1, the lower 32 bits = of | +| |the vector table base address = | ++----------------------+--------------------------------------------------= -----+ +|uint32 resetVectorhigh|Upper vector: = | +| |If bit[0] of flags is 0, the upper 32 bits of the = | +| |physical address where the CPU should execute from= on | +| |reset. If bit[0] of flags is 1, the upper 32 bits = of | +| |the vector table base address = | ++----------------------+--------------------------------------------------= -----+ +|Return values = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|int32 status |SUCCESS: if the CPU reset vector is set successful= ly. | +| |NOT_FOUND: if cpuId does not point to a valid CPU.= | +| |INVALID_PARAMETERS: the requested vector type is n= ot | +| |supported by this CPU. = | +| |DENIED: the calling agent is not allowed to set th= e | +| |reset vector of this CPU = | ++----------------------+--------------------------------------------------= -----+ + +CPU_SLEEP_MODE_SET +~~~~~~~~~~~~~~~~~~ +message_id: 0x7 +protocol_id: 0x82 + ++----------------------+--------------------------------------------------= -----+ +|Parameters = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|uint32 flags |Sleep mode flags: = | +| |Bits[31:1] Reserved, must be zero. = | +| |Bit[0] IRQ mux: = | +| |If set to 1 the wakeup mux source is the GIC, else= if 0| +| |then the GPC = | ++----------------------+--------------------------------------------------= -----+ +|uint32 sleepmode |target sleep mode = | ++----------------------+--------------------------------------------------= -----+ +|Return values = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|int32 status |SUCCESS: if the CPU sleep mode is set successfully= . | +| |NOT_FOUND: if cpuId does not point to a valid CPU.= | +| |INVALID_PARAMETERS: the sleepmode or flags is inva= lid. | +| |DENIED: the calling agent is not allowed to config= ure | +| |the CPU = | ++----------------------+--------------------------------------------------= -----+ + +CPU_INFO_GET +~~~~~~~~~~~~ +message_id: 0xC +protocol_id: 0x82 + ++----------------------+--------------------------------------------------= -----+ +|Parameters = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|uint32 cpuid |Identifier for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|Return values = | ++----------------------+--------------------------------------------------= -----+ +|Name |Description = | ++----------------------+--------------------------------------------------= -----+ +|int32 status |SUCCESS: if valid attributes are returned successf= ully.| +| |NOT_FOUND: if the cpuid is not valid. = | ++----------------------+--------------------------------------------------= -----+ +|uint32 runmode |Run mode for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|uint32 sleepmode |Sleep mode for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|uint32 resetvectorlow |Reset vector low 32 bits for the CPU = | ++----------------------+--------------------------------------------------= -----+ +|uint32 resetvecothigh |Reset vector high 32 bits for the CPU = | ++----------------------+--------------------------------------------------= -----+ + +NEGOTIATE_PROTOCOL_VERSION +~~~~~~~~~~~~~~~~~~~~~~~~~~ +message_id: 0x10 +protocol_id: 0x82 + ++--------------------+----------------------------------------------------= -----+ +|Parameters = | ++--------------------+----------------------------------------------------= -----+ +|Name |Description = | ++--------------------+----------------------------------------------------= -----+ +|uint32 version |The negotiated protocol version the agent intends to= use | ++--------------------+----------------------------------------------------= -----+ +|Return values = | ++--------------------+----------------------------------------------------= -----+ +|Name |Description = | ++--------------------+----------------------------------------------------= -----+ +|int32 status |SUCCESS: if the negotiated protocol version is suppo= rted | +| |by the platform. 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The driver is to use the LMM Protocol interface to boot, shutdown a LM. Signed-off-by: Peng Fan --- drivers/firmware/imx/Kconfig | 11 +++++ drivers/firmware/imx/Makefile | 1 + drivers/firmware/imx/sm-lmm.c | 89 +++++++++++++++++++++++++++++++++++++= ++++ include/linux/firmware/imx/sm.h | 27 +++++++++++++ 4 files changed, 128 insertions(+) diff --git a/drivers/firmware/imx/Kconfig b/drivers/firmware/imx/Kconfig index 907cd149c40a8b5f1b14c53e1c315ff4a28f32ac..c3e344d6ecc645df1f0e3ee8078= 934c47f347fd7 100644 --- a/drivers/firmware/imx/Kconfig +++ b/drivers/firmware/imx/Kconfig @@ -23,6 +23,17 @@ config IMX_SCU This driver manages the IPC interface between host CPU and the SCU firmware running on M4. =20 +config IMX_SCMI_LMM_DRV + tristate "IMX SCMI LMM Protocol driver" + depends on IMX_SCMI_LMM_EXT || COMPILE_TEST + default y if ARCH_MXC + help + The System Controller Management Interface firmware (SCMI FW) is + a low-level system function which runs on a dedicated Cortex-M + core that could provide Logical Machine management features. + + This driver can also be built as a module. + config IMX_SCMI_MISC_DRV tristate "IMX SCMI MISC Protocol driver" default y if ARCH_MXC diff --git a/drivers/firmware/imx/Makefile b/drivers/firmware/imx/Makefile index 8d046c341be878bb6dd1e6277992ff66ae90e292..7762855d2a771169d4f1867d27e= 0d51be7c9ad03 100644 --- a/drivers/firmware/imx/Makefile +++ b/drivers/firmware/imx/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_IMX_DSP) +=3D imx-dsp.o obj-$(CONFIG_IMX_SCU) +=3D imx-scu.o misc.o imx-scu-irq.o rm.o imx-scu-so= c.o obj-${CONFIG_IMX_SCMI_MISC_DRV} +=3D sm-misc.o +obj-${CONFIG_IMX_SCMI_LMM_DRV} +=3D sm-lmm.o diff --git a/drivers/firmware/imx/sm-lmm.c b/drivers/firmware/imx/sm-lmm.c new file mode 100644 index 0000000000000000000000000000000000000000..91a504e7f0d99089d3c2250a791= 8fb2fe99e991d --- /dev/null +++ b/drivers/firmware/imx/sm-lmm.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2025 NXP + */ + +#include +#include +#include +#include +#include +#include + +static const struct scmi_imx_lmm_proto_ops *imx_lmm_ops; +static struct scmi_protocol_handle *ph; + +int scmi_imx_lmm_boot(u32 lmid) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_lmm_ops->lmm_boot(ph, lmid); +}; +EXPORT_SYMBOL(scmi_imx_lmm_boot); + +int scmi_imx_lmm_info(u32 lmid, struct scmi_imx_lmm_info *info) +{ + if (!ph) + return -EPROBE_DEFER; + + if (!info) + return -EINVAL; + + return imx_lmm_ops->lmm_info(ph, lmid, info); +}; +EXPORT_SYMBOL(scmi_imx_lmm_info); + +int scmi_imx_lmm_power_on(u32 lmid) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_lmm_ops->lmm_power_on(ph, lmid); +}; +EXPORT_SYMBOL(scmi_imx_lmm_power_on); + +int scmi_imx_lmm_shutdown(u32 lmid, u32 flags) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_lmm_ops->lmm_shutdown(ph, lmid, flags); +}; +EXPORT_SYMBOL(scmi_imx_lmm_shutdown); + +static int scmi_imx_lmm_probe(struct scmi_device *sdev) +{ + const struct scmi_handle *handle =3D sdev->handle; + + if (!handle) + return -ENODEV; + + if (imx_lmm_ops) { + dev_err(&sdev->dev, "lmm already initialized\n"); + return -EEXIST; + } + + imx_lmm_ops =3D handle->devm_protocol_get(sdev, SCMI_PROTOCOL_IMX_LMM, &p= h); + if (IS_ERR(imx_lmm_ops)) + return PTR_ERR(imx_lmm_ops); + + return 0; +} + +static const struct scmi_device_id scmi_id_table[] =3D { + { SCMI_PROTOCOL_IMX_LMM, "imx-lmm" }, + { }, +}; +MODULE_DEVICE_TABLE(scmi, scmi_id_table); + +static struct scmi_driver scmi_imx_lmm_driver =3D { + .name =3D "scmi-imx-lmm", + .probe =3D scmi_imx_lmm_probe, + .id_table =3D scmi_id_table, +}; +module_scmi_driver(scmi_imx_lmm_driver); + +MODULE_AUTHOR("Peng Fan "); +MODULE_DESCRIPTION("IMX SM LMM driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/firmware/imx/sm.h b/include/linux/firmware/imx/s= m.h index 9b85a3f028d1b0a5287b453eb3ad8412a363fe6c..1e58ffaa81acd757d9e6a992a2f= 2df663681c08a 100644 --- a/include/linux/firmware/imx/sm.h +++ b/include/linux/firmware/imx/sm.h @@ -8,6 +8,7 @@ =20 #include #include +#include #include =20 #define SCMI_IMX_CTRL_PDM_CLK_SEL 0 /* AON PDM clock sel */ @@ -20,4 +21,30 @@ int scmi_imx_misc_ctrl_get(u32 id, u32 *num, u32 *val); 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The driver is to use the cpu Protocol interface to start, stop a cpu cores (eg, M7). Signed-off-by: Peng Fan --- drivers/firmware/imx/Kconfig | 11 +++++ drivers/firmware/imx/Makefile | 1 + drivers/firmware/imx/sm-cpu.c | 91 +++++++++++++++++++++++++++++++++++++= ++++ include/linux/firmware/imx/sm.h | 29 +++++++++++++ 4 files changed, 132 insertions(+) diff --git a/drivers/firmware/imx/Kconfig b/drivers/firmware/imx/Kconfig index c3e344d6ecc645df1f0e3ee8078934c47f347fd7..91c753921dffbe16ced8c10565d= 44c15b66b2797 100644 --- a/drivers/firmware/imx/Kconfig +++ b/drivers/firmware/imx/Kconfig @@ -23,6 +23,17 @@ config IMX_SCU This driver manages the IPC interface between host CPU and the SCU firmware running on M4. =20 +config IMX_SCMI_CPU_DRV + tristate "IMX SCMI CPU Protocol driver" + depends on IMX_SCMI_CPU_EXT || COMPILE_TEST + default y if ARCH_MXC + help + The System Controller Management Interface firmware (SCMI FW) is + a low-level system function which runs on a dedicated Cortex-M + core that could provide cpu management features. + + This driver can also be built as a module. + config IMX_SCMI_LMM_DRV tristate "IMX SCMI LMM Protocol driver" depends on IMX_SCMI_LMM_EXT || COMPILE_TEST diff --git a/drivers/firmware/imx/Makefile b/drivers/firmware/imx/Makefile index 7762855d2a771169d4f1867d27e0d51be7c9ad03..3bbaffa6e3478112638ed031375= 602389f18ef09 100644 --- a/drivers/firmware/imx/Makefile +++ b/drivers/firmware/imx/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_IMX_DSP) +=3D imx-dsp.o obj-$(CONFIG_IMX_SCU) +=3D imx-scu.o misc.o imx-scu-irq.o rm.o imx-scu-so= c.o +obj-${CONFIG_IMX_SCMI_CPU_DRV} +=3D sm-cpu.o obj-${CONFIG_IMX_SCMI_MISC_DRV} +=3D sm-misc.o obj-${CONFIG_IMX_SCMI_LMM_DRV} +=3D sm-lmm.o diff --git a/drivers/firmware/imx/sm-cpu.c b/drivers/firmware/imx/sm-cpu.c new file mode 100644 index 0000000000000000000000000000000000000000..1ce694a34b22843db5c1697ecb3= 3c0479edb2ed9 --- /dev/null +++ b/drivers/firmware/imx/sm-cpu.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2025 NXP + */ + +#include +#include +#include +#include +#include +#include + +static const struct scmi_imx_cpu_proto_ops *imx_cpu_ops; +static struct scmi_protocol_handle *ph; + +int scmi_imx_cpu_reset_vector_set(u32 cpuid, u64 vector, bool start, bool = boot, + bool resume) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_cpu_ops->cpu_reset_vector_set(ph, cpuid, vector, start, + boot, resume); +} +EXPORT_SYMBOL(scmi_imx_cpu_reset_vector_set); + +int scmi_imx_cpu_start(u32 cpuid) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_cpu_ops->cpu_start(ph, cpuid); +}; +EXPORT_SYMBOL(scmi_imx_cpu_start); + +int scmi_imx_cpu_started(u32 cpuid, bool *started) +{ + if (!ph) + return -EPROBE_DEFER; + + if (!started) + return -EINVAL; + + return imx_cpu_ops->cpu_started(ph, cpuid, started); +}; +EXPORT_SYMBOL(scmi_imx_cpu_started); + +int scmi_imx_cpu_stop(u32 cpuid) +{ + if (!ph) + return -EPROBE_DEFER; + + return imx_cpu_ops->cpu_stop(ph, cpuid); +}; +EXPORT_SYMBOL(scmi_imx_cpu_stop); + +static int scmi_imx_cpu_probe(struct scmi_device *sdev) +{ + const struct scmi_handle *handle =3D sdev->handle; + + if (!handle) + return -ENODEV; + + if (imx_cpu_ops) { + dev_err(&sdev->dev, "sm cpu already initialized\n"); + return -EEXIST; + } + + imx_cpu_ops =3D handle->devm_protocol_get(sdev, SCMI_PROTOCOL_IMX_CPU, &p= h); + if (IS_ERR(imx_cpu_ops)) + return PTR_ERR(imx_cpu_ops); + + return 0; +} + +static const struct scmi_device_id scmi_id_table[] =3D { + { SCMI_PROTOCOL_IMX_CPU, "imx-cpu" }, + { }, +}; +MODULE_DEVICE_TABLE(scmi, scmi_id_table); + +static struct scmi_driver scmi_imx_cpu_driver =3D { + .name =3D "scmi-imx-cpu", + .probe =3D scmi_imx_cpu_probe, + .id_table =3D scmi_id_table, +}; +module_scmi_driver(scmi_imx_cpu_driver); + +MODULE_AUTHOR("Peng Fan "); +MODULE_DESCRIPTION("IMX SM CPU driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/firmware/imx/sm.h b/include/linux/firmware/imx/s= m.h index 1e58ffaa81acd757d9e6a992a2f2df663681c08a..d12d5323cf842343e5d470b2aac= 01a9e4e269c30 100644 --- a/include/linux/firmware/imx/sm.h +++ b/include/linux/firmware/imx/sm.h @@ -21,6 +21,35 @@ int scmi_imx_misc_ctrl_get(u32 id, u32 *num, u32 *val); int scmi_imx_misc_ctrl_set(u32 id, u32 val); =20 +#if IS_ENABLED(CONFIG_IMX_SCMI_CPU_DRV) || IS_ENABLED(CONFIG_COMPILE_TEST) +int scmi_imx_cpu_start(u32 cpuid); +int scmi_imx_cpu_started(u32 cpuid, bool *started); +int scmi_imx_cpu_stop(u32 cpuid); +int scmi_imx_cpu_reset_vector_set(u32 cpuid, u64 vector, bool start, bool = boot, + bool resume); +#else +static inline int scmi_imx_cpu_start(u32 cpuid) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_cpu_started(u32 cpuid, bool *started) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_cpu_stop(u32 cpuid) +{ + return -EOPNOTSUPP; +} + +static inline int scmi_imx_cpu_reset_vector_set(u32 cpuid, u64 vector, + bool start, bool boot, bool resume) +{ + return -EOPNOTSUPP; +} +#endif + #if IS_ENABLED(CONFIG_IMX_SCMI_LMM_DRV) || IS_ENABLED(CONFIG_COMPILE_TEST) int scmi_imx_lmm_boot(u32 lmid); int scmi_imx_lmm_info(u32 lmid, struct scmi_imx_lmm_info *info); --=20 2.37.1