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0c3a877469
Use u32 instead of uint32_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint32_t/u32/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack <dmatlack@google.com> Link: https://patch.msgid.link/20260420212004.3938325-7-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* RISC-V Arch Timer(sstc) specific interface
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*
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* Copyright (c) 2024 Intel Corporation
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*/
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#ifndef SELFTEST_KVM_ARCH_TIMER_H
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#define SELFTEST_KVM_ARCH_TIMER_H
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#include <asm/csr.h>
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#include <asm/vdso/processor.h>
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static unsigned long timer_freq;
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#define msec_to_cycles(msec) \
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((timer_freq) * (u64)(msec) / 1000)
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#define usec_to_cycles(usec) \
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((timer_freq) * (u64)(usec) / 1000000)
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#define cycles_to_usec(cycles) \
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((u64)(cycles) * 1000000 / (timer_freq))
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static inline u64 timer_get_cycles(void)
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{
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return csr_read(CSR_TIME);
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}
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static inline void timer_set_cmp(u64 cval)
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{
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csr_write(CSR_STIMECMP, cval);
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}
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static inline u64 timer_get_cmp(void)
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{
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return csr_read(CSR_STIMECMP);
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}
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static inline void timer_irq_enable(void)
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{
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csr_set(CSR_SIE, IE_TIE);
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}
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static inline void timer_irq_disable(void)
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{
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csr_clear(CSR_SIE, IE_TIE);
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}
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static inline void timer_set_next_cmp_ms(u32 msec)
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{
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u64 now_ct = timer_get_cycles();
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u64 next_ct = now_ct + msec_to_cycles(msec);
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timer_set_cmp(next_ct);
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}
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static inline void __delay(u64 cycles)
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{
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u64 start = timer_get_cycles();
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while ((timer_get_cycles() - start) < cycles)
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cpu_relax();
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}
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static inline void udelay(unsigned long usec)
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{
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__delay(usec_to_cycles(usec));
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}
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#endif /* SELFTEST_KVM_ARCH_TIMER_H */
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