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115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
/*
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Copyright 2022, The Regents of the University of California.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ''AS
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IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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The views and conclusions contained in the software and documentation are those
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of the authors and should not be interpreted as representing official policies,
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either expressed or implied, of 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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