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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-11-26 GuEe-GUI first version
*/
#include "agent.h"
#define DBG_TAG "scmi.agent"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
rt_err_t rt_scmi_process_msg(struct rt_scmi_device *sdev, struct rt_scmi_msg *msg)
{
struct scmi_agent *agent;
if (!sdev || !msg)
{
return -RT_EINVAL;
}
agent = sdev->agent;
msg->sdev = sdev;
return agent->ops->process_msg(agent, msg);
}
static const char * const _scmi_error_table[] =
{
[-SCMI_SUCCESS] = "SUCCESS",
[-SCMI_ERR_SUPPORT] = "SUPPORT",
[-SCMI_ERR_PARAMS] = "PARAMS",
[-SCMI_ERR_ACCESS] = "ACCESS",
[-SCMI_ERR_ENTRY] = "ENTRY",
[-SCMI_ERR_RANGE] = "RANGE",
[-SCMI_ERR_BUSY] = "BUSY",
[-SCMI_ERR_COMMS] = "COMMS",
[-SCMI_ERR_GENERIC] = "GENERIC",
[-SCMI_ERR_HARDWARE] = "HARDWARE",
[-SCMI_ERR_PROTOCOL] = "PROTOCOL",
};
const char *rt_scmi_strerror(rt_base_t err)
{
const char *str;
err = err < 0 ? -err : err;
if (err < RT_ARRAY_SIZE(_scmi_error_table))
{
str = _scmi_error_table[err];
}
else
{
str = "UNKNOWN";
}
return str;
}
static rt_err_t scmi_channels_setup(struct scmi_agent *agent,
struct rt_platform_device *pdev)
{
struct rt_ofw_node *np = pdev->parent.ofw_node, *chn;
rt_ofw_foreach_available_child_node(np, chn)
{
rt_uint32_t prot_id;
struct rt_scmi_device *sdev;
if (rt_ofw_prop_read_u32(chn, "reg", &prot_id))
{
continue;
}
sdev = rt_calloc(1, sizeof(*sdev));
if (!sdev)
{
rt_ofw_node_put(chn);
return -RT_ENOMEM;
}
sdev->parent.ofw_node = chn;
sdev->protocol_id = prot_id;
sdev->agent = agent;
rt_scmi_device_register(sdev);
}
return RT_EOK;
}
static rt_err_t scmi_probe(struct rt_platform_device *pdev)
{
rt_err_t err;
struct rt_scmi_device *base_sdev;
struct scmi_agent *agent = rt_malloc(sizeof(*agent) + sizeof(*base_sdev));
const struct scmi_agent_ops *agent_ops;
if (!agent)
{
return -RT_ENOMEM;
}
agent_ops = pdev->id->data;
agent->ops = agent_ops;
if ((err = agent_ops->setup(agent, &pdev->parent)))
{
LOG_E("Setup interface %s error = %s", agent_ops->name, rt_strerror(err));
goto _fail;
}
if ((err = scmi_channels_setup(agent, pdev)))
{
goto _fail;
}
base_sdev = (void *)&agent[1];
rt_memset(base_sdev, 0, sizeof(*base_sdev));
base_sdev->protocol_id = SCMI_PROTOCOL_ID_BASE;
base_sdev->agent = agent;
if ((err = rt_scmi_device_register(base_sdev)))
{
LOG_W("Base protocol register error = %s", rt_strerror(err));
}
return RT_EOK;
_fail:
rt_free(agent);
return err;
}
extern struct rt_scmi_agent_ops scmi_agent_mailbox_ops;
extern struct rt_scmi_agent_ops scmi_agent_smc_ops;
extern struct rt_scmi_agent_ops scmi_agent_virtio_ops;
static const struct rt_ofw_node_id scmi_ofw_ids[] =
{
#ifdef RT_FIRMWARE_ARM_SCMI_TRANSPORT_MAILBOX
{ .compatible = "arm,scmi", .data = &scmi_agent_mailbox_ops },
#endif
#ifdef RT_FIRMWARE_ARM_SCMI_TRANSPORT_SMC
{ .compatible = "arm,scmi-smc", .data = &scmi_agent_smc_ops },
{ .compatible = "arm,scmi-smc-param", .data = &scmi_agent_smc_ops },
{ .compatible = "qcom,scmi-smc", .data = &scmi_agent_smc_ops},
#endif
#ifdef RT_FIRMWARE_ARM_SCMI_TRANSPORT_VIRTIO
{ .compatible = "arm,scmi-virtio", .data = &scmi_agent_virtio_ops },
#endif
{ /* sentinel */ }
};
static struct rt_platform_driver scmi_driver =
{
.name = "arm-scmi",
.ids = scmi_ofw_ids,
.probe = scmi_probe,
};
static int scmi_drv_register(void)
{
rt_platform_driver_register(&scmi_driver);
return 0;
}
INIT_SUBSYS_EXPORT(scmi_drv_register);
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