107 строки
2.2 KiB
C
107 строки
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
// Copyright IBM Corp 2019
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fsi-occ.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include "common.h"
|
|
|
|
struct p9_sbe_occ {
|
|
struct occ occ;
|
|
struct device *sbe;
|
|
};
|
|
|
|
#define to_p9_sbe_occ(x) container_of((x), struct p9_sbe_occ, occ)
|
|
|
|
static int p9_sbe_occ_send_cmd(struct occ *occ, u8 *cmd, size_t len,
|
|
void *resp, size_t resp_len)
|
|
{
|
|
struct p9_sbe_occ *ctx = to_p9_sbe_occ(occ);
|
|
int rc;
|
|
|
|
rc = fsi_occ_submit(ctx->sbe, cmd, len, resp, &resp_len);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
switch (((struct occ_response *)resp)->return_status) {
|
|
case OCC_RESP_CMD_IN_PRG:
|
|
rc = -ETIMEDOUT;
|
|
break;
|
|
case OCC_RESP_SUCCESS:
|
|
rc = 0;
|
|
break;
|
|
case OCC_RESP_CMD_INVAL:
|
|
case OCC_RESP_CMD_LEN_INVAL:
|
|
case OCC_RESP_DATA_INVAL:
|
|
case OCC_RESP_CHKSUM_ERR:
|
|
rc = -EINVAL;
|
|
break;
|
|
case OCC_RESP_INT_ERR:
|
|
case OCC_RESP_BAD_STATE:
|
|
case OCC_RESP_CRIT_EXCEPT:
|
|
case OCC_RESP_CRIT_INIT:
|
|
case OCC_RESP_CRIT_WATCHDOG:
|
|
case OCC_RESP_CRIT_OCB:
|
|
case OCC_RESP_CRIT_HW:
|
|
rc = -EREMOTEIO;
|
|
break;
|
|
default:
|
|
rc = -EPROTO;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int p9_sbe_occ_probe(struct platform_device *pdev)
|
|
{
|
|
int rc;
|
|
struct occ *occ;
|
|
struct p9_sbe_occ *ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx),
|
|
GFP_KERNEL);
|
|
if (!ctx)
|
|
return -ENOMEM;
|
|
|
|
ctx->sbe = pdev->dev.parent;
|
|
occ = &ctx->occ;
|
|
occ->bus_dev = &pdev->dev;
|
|
platform_set_drvdata(pdev, occ);
|
|
|
|
occ->powr_sample_time_us = 500;
|
|
occ->poll_cmd_data = 0x20; /* P9 OCC poll data */
|
|
occ->send_cmd = p9_sbe_occ_send_cmd;
|
|
|
|
rc = occ_setup(occ, "p9_occ");
|
|
if (rc == -ESHUTDOWN)
|
|
rc = -ENODEV; /* Host is shutdown, don't spew errors */
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int p9_sbe_occ_remove(struct platform_device *pdev)
|
|
{
|
|
struct occ *occ = platform_get_drvdata(pdev);
|
|
struct p9_sbe_occ *ctx = to_p9_sbe_occ(occ);
|
|
|
|
ctx->sbe = NULL;
|
|
occ_shutdown(occ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver p9_sbe_occ_driver = {
|
|
.driver = {
|
|
.name = "occ-hwmon",
|
|
},
|
|
.probe = p9_sbe_occ_probe,
|
|
.remove = p9_sbe_occ_remove,
|
|
};
|
|
|
|
module_platform_driver(p9_sbe_occ_driver);
|
|
|
|
MODULE_AUTHOR("Eddie James <eajames@linux.ibm.com>");
|
|
MODULE_DESCRIPTION("BMC P9 OCC hwmon driver");
|
|
MODULE_LICENSE("GPL");
|