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87 lines
2.6 KiB
C
87 lines
2.6 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)
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{
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dev->clk_info_rb = mqnic_find_reg_block(dev->rb_list, MQNIC_RB_CLK_INFO_TYPE, MQNIC_RB_CLK_INFO_VER, 0);
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if (!dev->clk_info_rb)
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return;
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uint32_t val = mqnic_reg_read32(dev->clk_info_rb->regs, MQNIC_RB_CLK_INFO_REF_NOM_PER);
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dev->ref_clk_nom_per_ns_num = val >> 16;
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dev->ref_clk_nom_per_ns_denom = val & 0xffff;
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dev->ref_clk_nom_freq_hz = (dev->ref_clk_nom_per_ns_denom * 1000000000ull) / dev->ref_clk_nom_per_ns_num;
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val = mqnic_reg_read32(dev->clk_info_rb->regs, MQNIC_RB_CLK_INFO_CLK_NOM_PER);
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dev->core_clk_nom_per_ns_num = val >> 16;
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dev->core_clk_nom_per_ns_denom = val & 0xffff;
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dev->core_clk_nom_freq_hz = (dev->core_clk_nom_per_ns_denom * 1000000000ull) / dev->core_clk_nom_per_ns_num;
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dev->clk_info_channels = mqnic_reg_read32(dev->clk_info_rb->regs, MQNIC_RB_CLK_INFO_COUNT);
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}
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uint32_t mqnic_get_core_clk_nom_freq_hz(struct mqnic *dev)
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{
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return dev->core_clk_nom_freq_hz;
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}
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uint32_t mqnic_get_ref_clk_nom_freq_hz(struct mqnic *dev)
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{
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return dev->ref_clk_nom_freq_hz;
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}
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uint32_t mqnic_get_core_clk_freq_hz(struct mqnic *dev)
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{
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if (!dev->clk_info_rb)
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return 0;
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return mqnic_reg_read32(dev->clk_info_rb->regs, MQNIC_RB_CLK_INFO_CLK_FREQ);
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}
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uint32_t mqnic_get_clk_freq_hz(struct mqnic *dev, int ch)
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{
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if (!dev->clk_info_rb || ch < 0 || ch >= dev->clk_info_channels)
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return 0;
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return mqnic_reg_read32(dev->clk_info_rb->regs, MQNIC_RB_CLK_INFO_FREQ_BASE + ch*4);
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}
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uint64_t mqnic_core_clk_cycles_to_ns(struct mqnic *dev, uint64_t cycles)
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{
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if (!dev->clk_info_rb || !dev->core_clk_nom_per_ns_denom)
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return 0;
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return (cycles * (uint64_t)dev->core_clk_nom_per_ns_num) / (uint64_t)dev->core_clk_nom_per_ns_denom;
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}
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uint64_t mqnic_core_clk_ns_to_cycles(struct mqnic *dev, uint64_t ns)
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{
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if (!dev->clk_info_rb || !dev->core_clk_nom_per_ns_num)
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return 0;
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return (ns * (uint64_t)dev->core_clk_nom_per_ns_denom) / (uint64_t)dev->core_clk_nom_per_ns_num;
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}
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uint64_t mqnic_ref_clk_cycles_to_ns(struct mqnic *dev, uint64_t cycles)
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{
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if (!dev->clk_info_rb || !dev->ref_clk_nom_per_ns_denom)
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return 0;
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return (cycles * (uint64_t)dev->ref_clk_nom_per_ns_num) / (uint64_t)dev->ref_clk_nom_per_ns_denom;
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}
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uint64_t mqnic_ref_clk_ns_to_cycles(struct mqnic *dev, uint64_t ns)
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{
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if (!dev->clk_info_rb || !dev->ref_clk_nom_per_ns_num)
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return 0;
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return (ns * (uint64_t)dev->ref_clk_nom_per_ns_denom) / (uint64_t)dev->ref_clk_nom_per_ns_num;
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}
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