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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2016-2019 HabanaLabs, Ltd.
* All Rights Reserved.
*/
#include "goyaP.h"
void goya_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
{
struct goya_device *goya = hdev->asic_specific;
switch (freq) {
case PLL_HIGH:
hl_set_frequency(hdev, MME_PLL, hdev->high_pll);
hl_set_frequency(hdev, TPC_PLL, hdev->high_pll);
hl_set_frequency(hdev, IC_PLL, hdev->high_pll);
break;
case PLL_LOW:
hl_set_frequency(hdev, MME_PLL, GOYA_PLL_FREQ_LOW);
hl_set_frequency(hdev, TPC_PLL, GOYA_PLL_FREQ_LOW);
hl_set_frequency(hdev, IC_PLL, GOYA_PLL_FREQ_LOW);
break;
case PLL_LAST:
hl_set_frequency(hdev, MME_PLL, goya->mme_clk);
hl_set_frequency(hdev, TPC_PLL, goya->tpc_clk);
hl_set_frequency(hdev, IC_PLL, goya->ic_clk);
break;
default:
dev_err(hdev->dev, "unknown frequency setting\n");
}
}
static ssize_t mme_clk_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, MME_PLL, false);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t mme_clk_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
struct goya_device *goya = hdev->asic_specific;
int rc;
long value;
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto fail;
}
if (hdev->pm_mng_profile == PM_AUTO) {
count = -EPERM;
goto fail;
}
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto fail;
}
hl_set_frequency(hdev, MME_PLL, value);
goya->mme_clk = value;
fail:
return count;
}
static ssize_t tpc_clk_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, TPC_PLL, false);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t tpc_clk_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
struct goya_device *goya = hdev->asic_specific;
int rc;
long value;
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto fail;
}
if (hdev->pm_mng_profile == PM_AUTO) {
count = -EPERM;
goto fail;
}
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto fail;
}
hl_set_frequency(hdev, TPC_PLL, value);
goya->tpc_clk = value;
fail:
return count;
}
static ssize_t ic_clk_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, IC_PLL, false);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t ic_clk_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
struct goya_device *goya = hdev->asic_specific;
int rc;
long value;
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto fail;
}
if (hdev->pm_mng_profile == PM_AUTO) {
count = -EPERM;
goto fail;
}
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto fail;
}
hl_set_frequency(hdev, IC_PLL, value);
goya->ic_clk = value;
fail:
return count;
}
static ssize_t mme_clk_curr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, MME_PLL, true);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t tpc_clk_curr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, TPC_PLL, true);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t ic_clk_curr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
value = hl_get_frequency(hdev, IC_PLL, true);
if (value < 0)
return value;
return sprintf(buf, "%lu\n", value);
}
static ssize_t pm_mng_profile_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
return sprintf(buf, "%s\n",
(hdev->pm_mng_profile == PM_AUTO) ? "auto" :
(hdev->pm_mng_profile == PM_MANUAL) ? "manual" :
"unknown");
}
static ssize_t pm_mng_profile_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto out;
}
mutex_lock(&hdev->fpriv_list_lock);
if (hdev->compute_ctx) {
dev_err(hdev->dev,
"Can't change PM profile while compute context is opened on the device\n");
count = -EPERM;
goto unlock_mutex;
}
if (strncmp("auto", buf, strlen("auto")) == 0) {
/* Make sure we are in LOW PLL when changing modes */
if (hdev->pm_mng_profile == PM_MANUAL) {
hdev->curr_pll_profile = PLL_HIGH;
hl_device_set_frequency(hdev, PLL_LOW);
hdev->pm_mng_profile = PM_AUTO;
}
} else if (strncmp("manual", buf, strlen("manual")) == 0) {
if (hdev->pm_mng_profile == PM_AUTO) {
/* Must release the lock because the work thread also
* takes this lock. But before we release it, set
* the mode to manual so nothing will change if a user
* suddenly opens the device
*/
hdev->pm_mng_profile = PM_MANUAL;
mutex_unlock(&hdev->fpriv_list_lock);
/* Flush the current work so we can return to the user
* knowing that he is the only one changing frequencies
*/
flush_delayed_work(&hdev->work_freq);
return count;
}
} else {
dev_err(hdev->dev, "value should be auto or manual\n");
count = -EINVAL;
}
unlock_mutex:
mutex_unlock(&hdev->fpriv_list_lock);
out:
return count;
}
static ssize_t high_pll_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct hl_device *hdev = dev_get_drvdata(dev);
if (hl_device_disabled_or_in_reset(hdev))
return -ENODEV;
return sprintf(buf, "%u\n", hdev->high_pll);
}
static ssize_t high_pll_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct hl_device *hdev = dev_get_drvdata(dev);
long value;
int rc;
if (hl_device_disabled_or_in_reset(hdev)) {
count = -ENODEV;
goto out;
}
rc = kstrtoul(buf, 0, &value);
if (rc) {
count = -EINVAL;
goto out;
}
hdev->high_pll = value;
out:
return count;
}
static DEVICE_ATTR_RW(high_pll);
static DEVICE_ATTR_RW(ic_clk);
static DEVICE_ATTR_RO(ic_clk_curr);
static DEVICE_ATTR_RW(mme_clk);
static DEVICE_ATTR_RO(mme_clk_curr);
static DEVICE_ATTR_RW(pm_mng_profile);
static DEVICE_ATTR_RW(tpc_clk);
static DEVICE_ATTR_RO(tpc_clk_curr);
static struct attribute *goya_dev_attrs[] = {
&dev_attr_high_pll.attr,
&dev_attr_ic_clk.attr,
&dev_attr_ic_clk_curr.attr,
&dev_attr_mme_clk.attr,
&dev_attr_mme_clk_curr.attr,
&dev_attr_pm_mng_profile.attr,
&dev_attr_tpc_clk.attr,
&dev_attr_tpc_clk_curr.attr,
NULL,
};
void goya_add_device_attr(struct hl_device *hdev,
struct attribute_group *dev_attr_grp)
{
dev_attr_grp->attrs = goya_dev_attrs;
}
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