Date: Wed, 21 Sep 2016 09:45:14 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r306085 - in stable/11/sys/arm64: arm64 include Message-ID: <201609210945.u8L9jEe8082123@repo.freebsd.org>
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Author: andrew Date: Wed Sep 21 09:45:14 2016 New Revision: 306085 URL: https://svnweb.freebsd.org/changeset/base/306085 Log: MFC 305285: Add a pc_clock pcpu field and use it to implement cpu_est_clockrate. This will allow drivers that manage the clock frequency to communicate this with the reset of the kernel. Sponsored by: ABT Systems Ltd Modified: stable/11/sys/arm64/arm64/machdep.c stable/11/sys/arm64/include/pcpu.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/arm64/arm64/machdep.c ============================================================================== --- stable/11/sys/arm64/arm64/machdep.c Wed Sep 21 09:06:06 2016 (r306084) +++ stable/11/sys/arm64/arm64/machdep.c Wed Sep 21 09:45:14 2016 (r306085) @@ -407,8 +407,17 @@ cpu_flush_dcache(void *ptr, size_t len) int cpu_est_clockrate(int cpu_id, uint64_t *rate) { + struct pcpu *pc; - panic("ARM64TODO: cpu_est_clockrate"); + pc = pcpu_find(cpu_id); + if (pc == NULL || rate == NULL) + return (EINVAL); + + if (pc->pc_clock == 0) + return (EOPNOTSUPP); + + *rate = pc->pc_clock; + return (0); } void Modified: stable/11/sys/arm64/include/pcpu.h ============================================================================== --- stable/11/sys/arm64/include/pcpu.h Wed Sep 21 09:06:06 2016 (r306084) +++ stable/11/sys/arm64/include/pcpu.h Wed Sep 21 09:45:14 2016 (r306085) @@ -38,7 +38,8 @@ #define PCPU_MD_FIELDS \ u_int pc_acpi_id; /* ACPI CPU id */ \ u_int pc_midr; /* stored MIDR value */ \ - char __pad[121] + uint64_t pc_clock; \ + char __pad[113] #ifdef _KERNEL
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