285c0faddc
Currently the user cannot interpret the PLL information based on index as its exposed as an integer. This commit exposes ASIC specific PLL indexes and maps it to a generic FW compatible index. Signed-off-by: Bharat Jauhari <bjauhari@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
122 lines
2.6 KiB
C
122 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2016-2018 HabanaLabs, Ltd.
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* All Rights Reserved.
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*/
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#include "gaudiP.h"
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#include "../include/gaudi/gaudi_fw_if.h"
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void gaudi_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
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{
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struct gaudi_device *gaudi = hdev->asic_specific;
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if (freq == PLL_LAST)
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hl_set_frequency(hdev, HL_GAUDI_MME_PLL, gaudi->max_freq_value);
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}
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int gaudi_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_operational(hdev, NULL))
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return -ENODEV;
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value = hl_get_frequency(hdev, HL_GAUDI_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, HL_GAUDI_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 clk_max_freq_mhz_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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struct gaudi_device *gaudi = hdev->asic_specific;
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long value;
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if (!hl_device_operational(hdev, NULL))
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return -ENODEV;
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value = hl_get_frequency(hdev, HL_GAUDI_MME_PLL, false);
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gaudi->max_freq_value = value;
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return sprintf(buf, "%lu\n", (value / 1000 / 1000));
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}
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static ssize_t clk_max_freq_mhz_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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struct gaudi_device *gaudi = hdev->asic_specific;
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int rc;
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u64 value;
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if (!hl_device_operational(hdev, NULL)) {
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count = -ENODEV;
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goto fail;
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}
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rc = kstrtoull(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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gaudi->max_freq_value = value * 1000 * 1000;
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hl_set_frequency(hdev, HL_GAUDI_MME_PLL, gaudi->max_freq_value);
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fail:
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return count;
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}
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static ssize_t clk_cur_freq_mhz_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_operational(hdev, NULL))
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return -ENODEV;
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value = hl_get_frequency(hdev, HL_GAUDI_MME_PLL, true);
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return sprintf(buf, "%lu\n", (value / 1000 / 1000));
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}
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static DEVICE_ATTR_RW(clk_max_freq_mhz);
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static DEVICE_ATTR_RO(clk_cur_freq_mhz);
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static struct attribute *gaudi_dev_attrs[] = {
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&dev_attr_clk_max_freq_mhz.attr,
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&dev_attr_clk_cur_freq_mhz.attr,
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NULL,
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};
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void gaudi_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 = gaudi_dev_attrs;
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}
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