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97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
// SPDX-License-Identifier: BSD-2-Clause-Views
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/*
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* Copyright (c) 2022-2023 The Regents of the University of California
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*/
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#include "mqnic.h"
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void mqnic_clk_info_init(struct mqnic_dev *mdev)
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{
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u32 val;
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mdev->clk_info_rb = mqnic_find_reg_block(mdev->rb_list, MQNIC_RB_CLK_INFO_TYPE, MQNIC_RB_CLK_INFO_VER, 0);
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if (!mdev->clk_info_rb)
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return;
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val = ioread32(mdev->clk_info_rb->regs + MQNIC_RB_CLK_INFO_REF_NOM_PER);
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mdev->ref_clk_nom_per_ns_num = val >> 16;
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mdev->ref_clk_nom_per_ns_denom = val & 0xffff;
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mdev->ref_clk_nom_freq_hz = (mdev->ref_clk_nom_per_ns_denom * 1000000000ull) / mdev->ref_clk_nom_per_ns_num;
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val = ioread32(mdev->clk_info_rb->regs + MQNIC_RB_CLK_INFO_CLK_NOM_PER);
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mdev->core_clk_nom_per_ns_num = val >> 16;
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mdev->core_clk_nom_per_ns_denom = val & 0xffff;
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mdev->core_clk_nom_freq_hz = (mdev->core_clk_nom_per_ns_denom * 1000000000ull) / mdev->core_clk_nom_per_ns_num;
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mdev->clk_info_channels = ioread32(mdev->clk_info_rb->regs + MQNIC_RB_CLK_INFO_COUNT);
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}
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u32 mqnic_get_core_clk_nom_freq_hz(struct mqnic_dev *mdev)
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{
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return mdev->core_clk_nom_freq_hz;
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}
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EXPORT_SYMBOL(mqnic_get_core_clk_nom_freq_hz);
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u32 mqnic_get_ref_clk_nom_freq_hz(struct mqnic_dev *mdev)
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{
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return mdev->ref_clk_nom_freq_hz;
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}
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EXPORT_SYMBOL(mqnic_get_ref_clk_nom_freq_hz);
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u32 mqnic_get_core_clk_freq_hz(struct mqnic_dev *mdev)
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{
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if (!mdev->clk_info_rb)
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return 0;
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return ioread32(mdev->clk_info_rb->regs + MQNIC_RB_CLK_INFO_CLK_FREQ);
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}
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EXPORT_SYMBOL(mqnic_get_core_clk_freq_hz);
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u32 mqnic_get_clk_freq_hz(struct mqnic_dev *mdev, int ch)
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{
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if (!mdev->clk_info_rb || ch < 0 || ch >= mdev->clk_info_channels)
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return 0;
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return ioread32(mdev->clk_info_rb->regs + MQNIC_RB_CLK_INFO_FREQ_BASE + ch*4);
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}
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EXPORT_SYMBOL(mqnic_get_clk_freq_hz);
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u64 mqnic_core_clk_cycles_to_ns(struct mqnic_dev *mdev, u64 cycles)
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{
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if (!mdev->clk_info_rb || !mdev->core_clk_nom_per_ns_denom)
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return 0;
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return (cycles * (u64)mdev->core_clk_nom_per_ns_num) / (u64)mdev->core_clk_nom_per_ns_denom;
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}
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EXPORT_SYMBOL(mqnic_core_clk_cycles_to_ns);
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u64 mqnic_core_clk_ns_to_cycles(struct mqnic_dev *mdev, u64 ns)
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{
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if (!mdev->clk_info_rb || !mdev->core_clk_nom_per_ns_num)
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return 0;
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return (ns * (u64)mdev->core_clk_nom_per_ns_denom) / (u64)mdev->core_clk_nom_per_ns_num;
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}
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EXPORT_SYMBOL(mqnic_core_clk_ns_to_cycles);
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u64 mqnic_ref_clk_cycles_to_ns(struct mqnic_dev *mdev, u64 cycles)
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{
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if (!mdev->clk_info_rb || !mdev->ref_clk_nom_per_ns_denom)
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return 0;
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return (cycles * (u64)mdev->ref_clk_nom_per_ns_num) / (u64)mdev->ref_clk_nom_per_ns_denom;
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}
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EXPORT_SYMBOL(mqnic_ref_clk_cycles_to_ns);
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u64 mqnic_ref_clk_ns_to_cycles(struct mqnic_dev *mdev, u64 ns)
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{
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if (!mdev->clk_info_rb || !mdev->ref_clk_nom_per_ns_num)
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return 0;
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return (ns * (u64)mdev->ref_clk_nom_per_ns_denom) / (u64)mdev->ref_clk_nom_per_ns_num;
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}
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EXPORT_SYMBOL(mqnic_ref_clk_ns_to_cycles);
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