// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2016-2019 HabanaLabs, Ltd.
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* All Rights Reserved.
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*/
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#include "goyaP.h"
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void goya_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
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{
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struct goya_device *goya = hdev->asic_specific;
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switch (freq) {
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case PLL_HIGH:
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hl_set_frequency(hdev, MME_PLL, hdev->high_pll);
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hl_set_frequency(hdev, TPC_PLL, hdev->high_pll);
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hl_set_frequency(hdev, IC_PLL, hdev->high_pll);
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break;
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case PLL_LOW:
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hl_set_frequency(hdev, MME_PLL, GOYA_PLL_FREQ_LOW);
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hl_set_frequency(hdev, TPC_PLL, GOYA_PLL_FREQ_LOW);
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hl_set_frequency(hdev, IC_PLL, GOYA_PLL_FREQ_LOW);
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break;
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case PLL_LAST:
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hl_set_frequency(hdev, MME_PLL, goya->mme_clk);
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hl_set_frequency(hdev, TPC_PLL, goya->tpc_clk);
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hl_set_frequency(hdev, IC_PLL, goya->ic_clk);
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break;
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default:
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dev_err(hdev->dev, "unknown frequency setting\n");
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}
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}
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int goya_get_clk_rate(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk)
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{
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, MME_PLL, false);
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if (value < 0) {
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dev_err(hdev->dev, "Failed to retrieve device max clock %ld\n",
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value);
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return value;
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}
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*max_clk = (value / 1000 / 1000);
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value = hl_get_frequency(hdev, MME_PLL, true);
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if (value < 0) {
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dev_err(hdev->dev,
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"Failed to retrieve device current clock %ld\n",
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value);
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return value;
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}
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*cur_clk = (value / 1000 / 1000);
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return 0;
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}
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static ssize_t mme_clk_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, MME_PLL, false);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t mme_clk_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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struct goya_device *goya = hdev->asic_specific;
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int rc;
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long value;
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if (hl_device_disabled_or_in_reset(hdev)) {
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count = -ENODEV;
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goto fail;
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}
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if (hdev->pm_mng_profile == PM_AUTO) {
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count = -EPERM;
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goto fail;
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}
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rc = kstrtoul(buf, 0, &value);
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if (rc) {
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count = -EINVAL;
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goto fail;
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}
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hl_set_frequency(hdev, MME_PLL, value);
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goya->mme_clk = value;
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fail:
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return count;
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}
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static ssize_t tpc_clk_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, TPC_PLL, false);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t tpc_clk_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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struct goya_device *goya = hdev->asic_specific;
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int rc;
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long value;
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if (hl_device_disabled_or_in_reset(hdev)) {
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count = -ENODEV;
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goto fail;
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}
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if (hdev->pm_mng_profile == PM_AUTO) {
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count = -EPERM;
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goto fail;
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}
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rc = kstrtoul(buf, 0, &value);
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if (rc) {
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count = -EINVAL;
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goto fail;
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}
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hl_set_frequency(hdev, TPC_PLL, value);
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goya->tpc_clk = value;
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fail:
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return count;
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}
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static ssize_t ic_clk_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, IC_PLL, false);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t ic_clk_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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struct goya_device *goya = hdev->asic_specific;
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int rc;
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long value;
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if (hl_device_disabled_or_in_reset(hdev)) {
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count = -ENODEV;
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goto fail;
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}
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if (hdev->pm_mng_profile == PM_AUTO) {
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count = -EPERM;
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goto fail;
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}
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rc = kstrtoul(buf, 0, &value);
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if (rc) {
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count = -EINVAL;
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goto fail;
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}
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hl_set_frequency(hdev, IC_PLL, value);
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goya->ic_clk = value;
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fail:
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return count;
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}
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static ssize_t mme_clk_curr_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, MME_PLL, true);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t tpc_clk_curr_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, TPC_PLL, true);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t ic_clk_curr_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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value = hl_get_frequency(hdev, IC_PLL, true);
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if (value < 0)
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return value;
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return sprintf(buf, "%lu\n", value);
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}
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static ssize_t pm_mng_profile_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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return sprintf(buf, "%s\n",
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(hdev->pm_mng_profile == PM_AUTO) ? "auto" :
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(hdev->pm_mng_profile == PM_MANUAL) ? "manual" :
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"unknown");
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}
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static ssize_t pm_mng_profile_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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if (hl_device_disabled_or_in_reset(hdev)) {
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count = -ENODEV;
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goto out;
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}
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mutex_lock(&hdev->fpriv_list_lock);
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if (hdev->compute_ctx) {
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dev_err(hdev->dev,
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"Can't change PM profile while compute context is opened on the device\n");
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count = -EPERM;
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goto unlock_mutex;
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}
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if (strncmp("auto", buf, strlen("auto")) == 0) {
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/* Make sure we are in LOW PLL when changing modes */
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if (hdev->pm_mng_profile == PM_MANUAL) {
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hdev->curr_pll_profile = PLL_HIGH;
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hdev->pm_mng_profile = PM_AUTO;
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hl_device_set_frequency(hdev, PLL_LOW);
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}
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} else if (strncmp("manual", buf, strlen("manual")) == 0) {
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if (hdev->pm_mng_profile == PM_AUTO) {
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/* Must release the lock because the work thread also
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* takes this lock. But before we release it, set
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* the mode to manual so nothing will change if a user
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* suddenly opens the device
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*/
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hdev->pm_mng_profile = PM_MANUAL;
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mutex_unlock(&hdev->fpriv_list_lock);
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/* Flush the current work so we can return to the user
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* knowing that he is the only one changing frequencies
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*/
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flush_delayed_work(&hdev->work_freq);
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return count;
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}
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} else {
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dev_err(hdev->dev, "value should be auto or manual\n");
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count = -EINVAL;
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}
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unlock_mutex:
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mutex_unlock(&hdev->fpriv_list_lock);
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out:
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return count;
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}
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static ssize_t high_pll_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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if (hl_device_disabled_or_in_reset(hdev))
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return -ENODEV;
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return sprintf(buf, "%u\n", hdev->high_pll);
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}
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static ssize_t high_pll_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct hl_device *hdev = dev_get_drvdata(dev);
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long value;
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int rc;
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if (hl_device_disabled_or_in_reset(hdev)) {
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count = -ENODEV;
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goto out;
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}
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rc = kstrtoul(buf, 0, &value);
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if (rc) {
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count = -EINVAL;
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goto out;
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}
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hdev->high_pll = value;
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out:
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return count;
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}
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static DEVICE_ATTR_RW(high_pll);
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static DEVICE_ATTR_RW(ic_clk);
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static DEVICE_ATTR_RO(ic_clk_curr);
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static DEVICE_ATTR_RW(mme_clk);
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static DEVICE_ATTR_RO(mme_clk_curr);
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static DEVICE_ATTR_RW(pm_mng_profile);
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static DEVICE_ATTR_RW(tpc_clk);
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static DEVICE_ATTR_RO(tpc_clk_curr);
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static struct attribute *goya_dev_attrs[] = {
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&dev_attr_high_pll.attr,
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&dev_attr_ic_clk.attr,
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&dev_attr_ic_clk_curr.attr,
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&dev_attr_mme_clk.attr,
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&dev_attr_mme_clk_curr.attr,
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&dev_attr_pm_mng_profile.attr,
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&dev_attr_tpc_clk.attr,
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&dev_attr_tpc_clk_curr.attr,
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NULL,
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};
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void goya_add_device_attr(struct hl_device *hdev,
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struct attribute_group *dev_attr_grp)
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{
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dev_attr_grp->attrs = goya_dev_attrs;
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}
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