mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-04 09:34:12 +08:00
1ad3f701c3
CXL PMU devices can be found from entries in the Register Locator DVSEC. Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20230526095824.16336-4-Jonathan.Cameron@huawei.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* Copyright(c) 2023 Huawei. All rights reserved. */
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/idr.h>
|
|
#include <cxlmem.h>
|
|
#include <pmu.h>
|
|
#include <cxl.h>
|
|
#include "core.h"
|
|
|
|
static void cxl_pmu_release(struct device *dev)
|
|
{
|
|
struct cxl_pmu *pmu = to_cxl_pmu(dev);
|
|
|
|
kfree(pmu);
|
|
}
|
|
|
|
const struct device_type cxl_pmu_type = {
|
|
.name = "cxl_pmu",
|
|
.release = cxl_pmu_release,
|
|
};
|
|
|
|
static void remove_dev(void *dev)
|
|
{
|
|
device_del(dev);
|
|
}
|
|
|
|
int devm_cxl_pmu_add(struct device *parent, struct cxl_pmu_regs *regs,
|
|
int assoc_id, int index, enum cxl_pmu_type type)
|
|
{
|
|
struct cxl_pmu *pmu;
|
|
struct device *dev;
|
|
int rc;
|
|
|
|
pmu = kzalloc(sizeof(*pmu), GFP_KERNEL);
|
|
if (!pmu)
|
|
return -ENOMEM;
|
|
|
|
pmu->assoc_id = assoc_id;
|
|
pmu->index = index;
|
|
pmu->type = type;
|
|
pmu->base = regs->pmu;
|
|
dev = &pmu->dev;
|
|
device_initialize(dev);
|
|
device_set_pm_not_required(dev);
|
|
dev->parent = parent;
|
|
dev->bus = &cxl_bus_type;
|
|
dev->type = &cxl_pmu_type;
|
|
switch (pmu->type) {
|
|
case CXL_PMU_MEMDEV:
|
|
rc = dev_set_name(dev, "pmu_mem%d.%d", assoc_id, index);
|
|
break;
|
|
}
|
|
if (rc)
|
|
goto err;
|
|
|
|
rc = device_add(dev);
|
|
if (rc)
|
|
goto err;
|
|
|
|
return devm_add_action_or_reset(parent, remove_dev, dev);
|
|
|
|
err:
|
|
put_device(&pmu->dev);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_NS_GPL(devm_cxl_pmu_add, CXL);
|