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accel/ivpu: Show NPU frequency in sysfs

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Add sysfs files that show maximum and current
frequency of the NPU's data processing unit.
New sysfs entries:
- npu_max_frequency_mhz
- npu_current_frequency_mhz

Signed-off-by: Andrzej Kacprowski <Andrzej.Kacprowski@intel.com>
Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://lore.kernel.org/r/20250401155912.4049340-3-maciej.falkowski@linux.intel.com
This commit is contained in:
Andrzej Kacprowski 2025-04-01 17:59:12 +02:00 committed by Jacek Lawrynowicz
parent 6c2b75404d
commit 1524c28b99
4 changed files with 62 additions and 1 deletions
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5
drivers/accel/ivpu/ivpu_hw.h
View File

@ -87,6 +87,11 @@ static inline u32 ivpu_hw_dpu_max_freq_get(struct ivpu_device *vdev)
return ivpu_hw_btrs_dpu_max_freq_get(vdev);
}
static inline u32 ivpu_hw_dpu_freq_get(struct ivpu_device *vdev)
{
return ivpu_hw_btrs_dpu_freq_get(vdev);
}
static inline void ivpu_hw_irq_clear(struct ivpu_device *vdev)
{
ivpu_hw_ip_irq_clear(vdev);

8
drivers/accel/ivpu/ivpu_hw_btrs.c
View File

@ -606,6 +606,14 @@ u32 ivpu_hw_btrs_dpu_max_freq_get(struct ivpu_device *vdev)
return pll_ratio_to_dpu_freq(vdev, vdev->hw->pll.max_ratio);
}
u32 ivpu_hw_btrs_dpu_freq_get(struct ivpu_device *vdev)
{
if (ivpu_hw_btrs_gen(vdev) == IVPU_HW_BTRS_MTL)
return pll_ratio_to_dpu_freq_mtl(pll_config_get_mtl(vdev));
else
return pll_ratio_to_dpu_freq_lnl(pll_config_get_lnl(vdev));
}
/* Handler for IRQs from Buttress core (irqB) */
bool ivpu_hw_btrs_irq_handler_mtl(struct ivpu_device *vdev, int irq)
{

1
drivers/accel/ivpu/ivpu_hw_btrs.h
View File

@ -32,6 +32,7 @@ void ivpu_hw_btrs_profiling_freq_reg_set_lnl(struct ivpu_device *vdev);
void ivpu_hw_btrs_ats_print_lnl(struct ivpu_device *vdev);
void ivpu_hw_btrs_clock_relinquish_disable_lnl(struct ivpu_device *vdev);
u32 ivpu_hw_btrs_dpu_max_freq_get(struct ivpu_device *vdev);
u32 ivpu_hw_btrs_dpu_freq_get(struct ivpu_device *vdev);
bool ivpu_hw_btrs_irq_handler_mtl(struct ivpu_device *vdev, int irq);
bool ivpu_hw_btrs_irq_handler_lnl(struct ivpu_device *vdev, int irq);
int ivpu_hw_btrs_dct_get_request(struct ivpu_device *vdev, bool *enable);

49
drivers/accel/ivpu/ivpu_sysfs.c
View File

@ -1,10 +1,12 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2024 Intel Corporation
* Copyright (C) 2024-2025 Intel Corporation
*/
#include <linux/device.h>
#include <linux/err.h>
#include <linux/pm_runtime.h>
#include <linux/units.h>
#include "ivpu_drv.h"
#include "ivpu_gem.h"
@ -90,10 +92,55 @@ sched_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
static DEVICE_ATTR_RO(sched_mode);
/**
* DOC: npu_max_frequency
*
* The npu_max_frequency shows maximum frequency in MHz of the NPU's data
* processing unit
*/
static ssize_t
npu_max_frequency_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
u32 freq = ivpu_hw_dpu_max_freq_get(vdev);
return sysfs_emit(buf, "%lu\n", freq / HZ_PER_MHZ);
}
static DEVICE_ATTR_RO(npu_max_frequency_mhz);
/**
* DOC: npu_current_frequency_mhz
*
* The npu_current_frequency_mhz shows current frequency in MHz of the NPU's
* data processing unit
*/
static ssize_t
npu_current_frequency_mhz_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
u32 freq = 0;
/* Read frequency only if device is active, otherwise frequency is 0 */
if (pm_runtime_get_if_active(vdev->drm.dev) > 0) {
freq = ivpu_hw_dpu_freq_get(vdev);
pm_runtime_put_autosuspend(vdev->drm.dev);
}
return sysfs_emit(buf, "%lu\n", freq / HZ_PER_MHZ);
}
static DEVICE_ATTR_RO(npu_current_frequency_mhz);
static struct attribute *ivpu_dev_attrs[] = {
&dev_attr_npu_busy_time_us.attr,
&dev_attr_npu_memory_utilization.attr,
&dev_attr_sched_mode.attr,
&dev_attr_npu_max_frequency_mhz.attr,
&dev_attr_npu_current_frequency_mhz.attr,
NULL,
};