diff options
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/scmi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/firmware/scmi/pwdom.c | 188 | ||||
| -rw-r--r-- | drivers/firmware/scmi/sandbox-scmi_agent.c | 265 | ||||
| -rw-r--r-- | drivers/firmware/scmi/sandbox-scmi_devices.c | 10 | ||||
| -rw-r--r-- | drivers/firmware/scmi/scmi_agent-uclass.c | 11 |
5 files changed, 474 insertions, 1 deletions
diff --git a/drivers/firmware/scmi/Makefile b/drivers/firmware/scmi/Makefile index 1a23d49817..dae4286358 100644 --- a/drivers/firmware/scmi/Makefile +++ b/drivers/firmware/scmi/Makefile @@ -4,4 +4,5 @@ obj-y += smt.o obj-$(CONFIG_SCMI_AGENT_SMCCC) += smccc_agent.o obj-$(CONFIG_SCMI_AGENT_MAILBOX) += mailbox_agent.o obj-$(CONFIG_SCMI_AGENT_OPTEE) += optee_agent.o +obj-$(CONFIG_SCMI_POWER_DOMAIN) += pwdom.o obj-$(CONFIG_SANDBOX) += sandbox-scmi_agent.o sandbox-scmi_devices.o diff --git a/drivers/firmware/scmi/pwdom.c b/drivers/firmware/scmi/pwdom.c new file mode 100644 index 0000000000..de2ba4755a --- /dev/null +++ b/drivers/firmware/scmi/pwdom.c @@ -0,0 +1,188 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * SCMI Power domain management protocol + * + * Copyright (C) 2023 Linaro Limited + * author: AKASHI Takahiro <takahiro.akashi@linaro.org> + */ + +#include <dm.h> +#include <malloc.h> +#include <scmi_agent.h> +#include <scmi_protocols.h> +#include <string.h> +#include <asm/types.h> + +int scmi_pwd_protocol_attrs(struct udevice *dev, int *num_pwdoms, + u64 *stats_addr, size_t *stats_len) +{ + struct scmi_pwd_protocol_attrs_out out; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PROTOCOL_ATTRIBUTES, + .out_msg = (u8 *)&out, + .out_msg_sz = sizeof(out), + }; + int ret; + + if (!dev || !num_pwdoms || !stats_addr || !stats_len) + return -EINVAL; + + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (out.status) + return scmi_to_linux_errno(out.status); + + *num_pwdoms = SCMI_PWD_PROTO_ATTRS_NUM_PWD(out.attributes); + *stats_addr = ((u64)out.stats_addr_high << 32) + out.stats_addr_low; + *stats_len = out.stats_len; + + return 0; +} + +int scmi_pwd_protocol_message_attrs(struct udevice *dev, s32 message_id, + u32 *attributes) +{ + struct scmi_pwd_protocol_msg_attrs_out out; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PROTOCOL_MESSAGE_ATTRIBUTES, + .in_msg = (u8 *)&message_id, + .in_msg_sz = sizeof(message_id), + .out_msg = (u8 *)&out, + .out_msg_sz = sizeof(out), + }; + int ret; + + if (!dev || !attributes) + return -EINVAL; + + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (out.status) + return scmi_to_linux_errno(out.status); + + *attributes = out.attributes; + + return 0; +} + +int scmi_pwd_attrs(struct udevice *dev, u32 domain_id, u32 *attributes, + u8 **name) +{ + struct scmi_pwd_attrs_out out; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PWD_ATTRIBUTES, + .in_msg = (u8 *)&domain_id, + .in_msg_sz = sizeof(domain_id), + .out_msg = (u8 *)&out, + .out_msg_sz = sizeof(out), + }; + int ret; + + if (!dev || !attributes || !name) + return -EINVAL; + + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (out.status) + return scmi_to_linux_errno(out.status); + + *name = strdup(out.name); + if (!*name) + return -ENOMEM; + + *attributes = out.attributes; + + return 0; +} + +int scmi_pwd_state_set(struct udevice *dev, u32 flags, u32 domain_id, + u32 pstate) +{ + struct scmi_pwd_state_set_in in; + s32 status; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PWD_STATE_SET, + .in_msg = (u8 *)&in, + .in_msg_sz = sizeof(in), + .out_msg = (u8 *)&status, + .out_msg_sz = sizeof(status), + }; + int ret; + + if (!dev) + return -EINVAL; + + in.flags = flags; + in.domain_id = domain_id; + in.pstate = pstate; + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (status) + return scmi_to_linux_errno(status); + + return 0; +} + +int scmi_pwd_state_get(struct udevice *dev, u32 domain_id, u32 *pstate) +{ + struct scmi_pwd_state_get_out out; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PWD_STATE_GET, + .in_msg = (u8 *)&domain_id, + .in_msg_sz = sizeof(domain_id), + .out_msg = (u8 *)&out, + .out_msg_sz = sizeof(out), + }; + int ret; + + if (!dev || !pstate) + return -EINVAL; + + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (out.status) + return scmi_to_linux_errno(out.status); + + *pstate = out.pstate; + + return 0; +} + +int scmi_pwd_name_get(struct udevice *dev, u32 domain_id, u8 **name) +{ + struct scmi_pwd_name_get_out out; + struct scmi_msg msg = { + .protocol_id = SCMI_PROTOCOL_ID_POWER_DOMAIN, + .message_id = SCMI_PWD_NAME_GET, + .in_msg = (u8 *)&domain_id, + .in_msg_sz = sizeof(domain_id), + .out_msg = (u8 *)&out, + .out_msg_sz = sizeof(out), + }; + int ret; + + if (!dev || !name) + return -EINVAL; + + ret = devm_scmi_process_msg(dev, &msg); + if (ret) + return ret; + if (out.status) + return scmi_to_linux_errno(out.status); + + *name = strdup(out.extended_name); + if (!*name) + return -ENOMEM; + + return 0; +} diff --git a/drivers/firmware/scmi/sandbox-scmi_agent.c b/drivers/firmware/scmi/sandbox-scmi_agent.c index eb567dd900..9f5f497e0a 100644 --- a/drivers/firmware/scmi/sandbox-scmi_agent.c +++ b/drivers/firmware/scmi/sandbox-scmi_agent.c @@ -43,6 +43,8 @@ #define SANDBOX_SCMI_AGENT_NAME "OSPM" #define SANDBOX_SCMI_PLATFORM_NAME "platform" +#define SANDBOX_SCMI_PWD_PROTOCOL_VERSION SCMI_PWD_PROTOCOL_VERSION + /** * struct sandbox_channel - Description of sandbox transport * @channel_id: Channel identifier @@ -64,6 +66,7 @@ struct scmi_channel { }; static u8 protocols[] = { + SCMI_PROTOCOL_ID_POWER_DOMAIN, SCMI_PROTOCOL_ID_CLOCK, SCMI_PROTOCOL_ID_RESET_DOMAIN, SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN, @@ -71,6 +74,12 @@ static u8 protocols[] = { #define NUM_PROTOCOLS ARRAY_SIZE(protocols) +static struct sandbox_scmi_pwd scmi_pwdom[] = { + { .id = 0 }, + { .id = 1 }, + { .id = 2 }, +}; + static struct sandbox_scmi_clk scmi_clk[] = { { .rate = 333 }, { .rate = 200 }, @@ -458,6 +467,238 @@ static int sandbox_scmi_base_reset_agent_configuration(struct udevice *dev, return 0; } +/* Power Domain Management Protocol */ + +/** + * sandbox_scmi_pwd_protocol_version - implement SCMI_PROTOCOL_VERSION + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PROTOCOL_VERSION command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_protocol_version(struct udevice *dev, + struct scmi_msg *msg) +{ + struct scmi_protocol_version_out *out = NULL; + + if (!msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + out = (struct scmi_protocol_version_out *)msg->out_msg; + out->version = SANDBOX_SCMI_PWD_PROTOCOL_VERSION; + out->status = SCMI_SUCCESS; + + return 0; +} + +/** + * sandbox_scmi_pwd_protocol_attribs - implement SCMI_PWD_PROTOCOL_ATTRS + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_PROTOCOL_ATTRS command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_protocol_attribs(struct udevice *dev, + struct scmi_msg *msg) +{ + struct scmi_pwd_protocol_attrs_out *out; + + if (!msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + out = (struct scmi_pwd_protocol_attrs_out *)msg->out_msg; + + out->attributes = ARRAY_SIZE(scmi_pwdom); + out->stats_addr_low = 0; + out->stats_addr_high = 0; + out->stats_len = 0; + out->status = SCMI_SUCCESS; + + return 0; +} + +/** + * sandbox_scmi_pwd_protocol_msg_attribs - implement + SCMI_PWD_PROTOCOL_MESSAGE_ATTRS + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_PROTOCOL_MESSAGE_ATTRS command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_protocol_msg_attribs(struct udevice *dev, + struct scmi_msg *msg) +{ + u32 message_id; + struct scmi_pwd_protocol_msg_attrs_out *out; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(message_id) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + message_id = *(u32 *)msg->in_msg; + + out = (struct scmi_pwd_protocol_msg_attrs_out *)msg->out_msg; + if (message_id <= SCMI_PWD_STATE_GET || + message_id == SCMI_PWD_NAME_GET) { + out->attributes = 0; + out->status = SCMI_SUCCESS; + } else { + out->status = SCMI_NOT_FOUND; + } + + return 0; +} + +/** + * sandbox_scmi_pwd_attribs - implement SCMI_PWD_ATTRS + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_ATTRS command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_attribs(struct udevice *dev, struct scmi_msg *msg) +{ + u32 domain_id; + struct scmi_pwd_attrs_out *out; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(domain_id) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + domain_id = *(u32 *)msg->in_msg; + out = (struct scmi_pwd_attrs_out *)msg->out_msg; + + if (domain_id > ARRAY_SIZE(scmi_pwdom)) { + out->status = SCMI_NOT_FOUND; + + return 0; + } + + out->attributes = + SCMI_PWD_ATTR_PSTATE_SYNC | SCMI_PWD_ATTR_EXTENDED_NAME; + /* just 15-char + NULL */ + snprintf(out->name, SCMI_PWD_NAME_LENGTH_MAX, "power-domain--%d", + domain_id); + out->status = SCMI_SUCCESS; + + return 0; +} + +/** + * sandbox_scmi_pwd_state_set - implement SCMI_PWD_STATE_SET + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_STATE_SET command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_state_set(struct udevice *dev, struct scmi_msg *msg) +{ + struct scmi_pwd_state_set_in *in; + s32 *status; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(in) || + !msg->out_msg || msg->out_msg_sz < sizeof(*status)) + return -EINVAL; + + in = (struct scmi_pwd_state_set_in *)msg->in_msg; + status = (s32 *)msg->out_msg; + + if (in->domain_id > ARRAY_SIZE(scmi_pwdom)) { + *status = SCMI_NOT_FOUND; + + return 0; + } + + if ((in->flags & SCMI_PWD_SET_FLAGS_ASYNC) || + (in->pstate != SCMI_PWD_PSTATE_TYPE_LOST && in->pstate)) { + *status = SCMI_INVALID_PARAMETERS; + + return 0; + } + + scmi_pwdom[in->domain_id].pstate = in->pstate; + *status = SCMI_SUCCESS; + + return 0; +} + +/** + * sandbox_scmi_pwd_state_get - implement SCMI_PWD_STATE_GET + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_STATE_GET command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_state_get(struct udevice *dev, struct scmi_msg *msg) +{ + u32 domain_id; + struct scmi_pwd_state_get_out *out; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(domain_id) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + domain_id = *(u32 *)msg->in_msg; + out = (struct scmi_pwd_state_get_out *)msg->out_msg; + + if (domain_id > ARRAY_SIZE(scmi_pwdom)) { + out->status = SCMI_NOT_FOUND; + + return 0; + } + + out->pstate = scmi_pwdom[domain_id].pstate; + out->status = SCMI_SUCCESS; + + return 0; +} + +/** + * sandbox_scmi_pwd_name_get - implement SCMI_PWD_NAME_GET + * @dev: SCMI device + * @msg: SCMI message + * + * Implement SCMI_PWD_NAME_GET command. + * + * Return: 0 on success, error code on failure + */ +static int sandbox_scmi_pwd_name_get(struct udevice *dev, struct scmi_msg *msg) +{ + u32 domain_id; + struct scmi_pwd_name_get_out *out; + + if (!msg->in_msg || msg->in_msg_sz < sizeof(domain_id) || + !msg->out_msg || msg->out_msg_sz < sizeof(*out)) + return -EINVAL; + + domain_id = *(u32 *)msg->in_msg; + out = (struct scmi_pwd_name_get_out *)msg->out_msg; + + if (domain_id > ARRAY_SIZE(scmi_pwdom)) { + out->status = SCMI_NOT_FOUND; + + return 0; + } + + snprintf(out->extended_name, SCMI_PWD_EXTENDED_NAME_MAX, + "power-domain--%d-extended", domain_id); + out->status = SCMI_SUCCESS; + + return 0; +} + /* Clock Protocol */ static int sandbox_scmi_clock_protocol_attribs(struct udevice *dev, @@ -918,6 +1159,26 @@ static int sandbox_scmi_test_process_msg(struct udevice *dev, break; } break; + case SCMI_PROTOCOL_ID_POWER_DOMAIN: + switch (msg->message_id) { + case SCMI_PROTOCOL_VERSION: + return sandbox_scmi_pwd_protocol_version(dev, msg); + case SCMI_PROTOCOL_ATTRIBUTES: + return sandbox_scmi_pwd_protocol_attribs(dev, msg); + case SCMI_PROTOCOL_MESSAGE_ATTRIBUTES: + return sandbox_scmi_pwd_protocol_msg_attribs(dev, msg); + case SCMI_PWD_ATTRIBUTES: + return sandbox_scmi_pwd_attribs(dev, msg); + case SCMI_PWD_STATE_SET: + return sandbox_scmi_pwd_state_set(dev, msg); + case SCMI_PWD_STATE_GET: + return sandbox_scmi_pwd_state_get(dev, msg); + case SCMI_PWD_NAME_GET: + return sandbox_scmi_pwd_name_get(dev, msg); + default: + break; + } + break; case SCMI_PROTOCOL_ID_CLOCK: switch (msg->message_id) { case SCMI_PROTOCOL_ATTRIBUTES: @@ -960,7 +1221,6 @@ static int sandbox_scmi_test_process_msg(struct udevice *dev, break; } break; - case SCMI_PROTOCOL_ID_POWER_DOMAIN: case SCMI_PROTOCOL_ID_SYSTEM: case SCMI_PROTOCOL_ID_PERF: case SCMI_PROTOCOL_ID_SENSOR: @@ -993,6 +1253,9 @@ static int sandbox_scmi_test_probe(struct udevice *dev) struct sandbox_scmi_agent *agent = dev_get_priv(dev); *agent = (struct sandbox_scmi_agent){ + .pwdom_version = SANDBOX_SCMI_PWD_PROTOCOL_VERSION, + .pwdom = scmi_pwdom, + .pwdom_count = ARRAY_SIZE(scmi_pwdom), .clk = scmi_clk, .clk_count = ARRAY_SIZE(scmi_clk), .reset = scmi_reset, diff --git a/drivers/firmware/scmi/sandbox-scmi_devices.c b/drivers/firmware/scmi/sandbox-scmi_devices.c index 9baeb469ec..facb5b06ff 100644 --- a/drivers/firmware/scmi/sandbox-scmi_devices.c +++ b/drivers/firmware/scmi/sandbox-scmi_devices.c @@ -29,12 +29,14 @@ /* * struct sandbox_scmi_device_priv - Storage for device handles used by test + * @pwdom: Power domain device * @clk: Array of clock instances used by tests * @reset_clt: Array of the reset controller instances used by tests * @regulators: Array of regulator device references used by the tests * @devices: Resources exposed by sandbox_scmi_devices_ctx() */ struct sandbox_scmi_device_priv { + struct power_domain pwdom; struct clk clk[SCMI_TEST_DEVICES_CLK_COUNT]; struct reset_ctl reset_ctl[SCMI_TEST_DEVICES_RD_COUNT]; struct udevice *regulators[SCMI_TEST_DEVICES_VOLTD_COUNT]; @@ -77,6 +79,8 @@ static int sandbox_scmi_devices_probe(struct udevice *dev) size_t n; priv->devices = (struct sandbox_scmi_devices){ + .pwdom = &priv->pwdom, + .pwdom_count = 1, .clk = priv->clk, .clk_count = SCMI_TEST_DEVICES_CLK_COUNT, .reset = priv->reset_ctl, @@ -85,6 +89,12 @@ static int sandbox_scmi_devices_probe(struct udevice *dev) .regul_count = SCMI_TEST_DEVICES_VOLTD_COUNT, }; + ret = power_domain_get_by_index(dev, priv->devices.pwdom, 0); + if (ret) { + dev_err(dev, "%s: Failed on power domain\n", __func__); + return ret; + } + for (n = 0; n < SCMI_TEST_DEVICES_CLK_COUNT; n++) { ret = clk_get_by_index(dev, n, priv->devices.clk + n); if (ret) { diff --git a/drivers/firmware/scmi/scmi_agent-uclass.c b/drivers/firmware/scmi/scmi_agent-uclass.c index 6f585b96f7..0f1003e167 100644 --- a/drivers/firmware/scmi/scmi_agent-uclass.c +++ b/drivers/firmware/scmi/scmi_agent-uclass.c @@ -86,6 +86,9 @@ struct udevice *scmi_get_protocol(struct udevice *dev, case SCMI_PROTOCOL_ID_BASE: proto = priv->base_dev; break; + case SCMI_PROTOCOL_ID_POWER_DOMAIN: + proto = priv->pwdom_dev; + break; case SCMI_PROTOCOL_ID_CLOCK: proto = priv->clock_dev; break; @@ -133,6 +136,9 @@ static int scmi_add_protocol(struct udevice *dev, case SCMI_PROTOCOL_ID_BASE: priv->base_dev = proto; break; + case SCMI_PROTOCOL_ID_POWER_DOMAIN: + priv->pwdom_dev = proto; + break; case SCMI_PROTOCOL_ID_CLOCK: priv->clock_dev = proto; break; @@ -405,6 +411,11 @@ static int scmi_bind_protocols(struct udevice *dev) drv = NULL; name = ofnode_get_name(node); switch (protocol_id) { + case SCMI_PROTOCOL_ID_POWER_DOMAIN: + if (CONFIG_IS_ENABLED(SCMI_POWER_DOMAIN) && + scmi_protocol_is_supported(dev, protocol_id)) + drv = DM_DRIVER_GET(scmi_power_domain); + break; case SCMI_PROTOCOL_ID_CLOCK: if (CONFIG_IS_ENABLED(CLK_SCMI) && scmi_protocol_is_supported(dev, protocol_id)) |