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From: Bobby Eshleman <bobbyeshleman@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Bobby Eshleman <bobbyeshleman@gmail.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>, Wei Liu <wl@xen.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	George Dunlap <George.Dunlap@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	Bobby Eshleman <bobby.eshleman@starlab.io>,
	Dan Robertson <dan@dlrobertson.com>,
	Alistair Francis <alistair.francis@wdc.com>
Subject: [Xen-devel] [RFC XEN PATCH 12/23] riscv: Add time.c
Date: Tue, 21 Jan 2020 19:58:51 -0600	[thread overview]
Message-ID: <c72d23e1c8bb8edbe638935cb74fa3bd348eba4e.1579615303.git.bobbyeshleman@gmail.com> (raw)
In-Reply-To: <cover.1579615303.git.bobbyeshleman@gmail.com>

From: Alistair Francis <alistair.francis@wdc.com>

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 xen/arch/riscv/time.c | 74 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 xen/arch/riscv/time.c

diff --git a/xen/arch/riscv/time.c b/xen/arch/riscv/time.c
new file mode 100644
index 0000000000..5358a22bd7
--- /dev/null
+++ b/xen/arch/riscv/time.c
@@ -0,0 +1,74 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <xen/console.h>
+#include <xen/init.h>
+#include <xen/irq.h>
+#include <xen/lib.h>
+#include <xen/mm.h>
+#include <xen/softirq.h>
+#include <xen/sched.h>
+#include <xen/time.h>
+#include <xen/sched.h>
+#include <xen/event.h>
+#include <xen/cpu.h>
+#include <xen/notifier.h>
+#include <asm/system.h>
+#include <asm/time.h>
+
+unsigned long __read_mostly cpu_khz;  /* CPU clock frequency in kHz. */
+
+uint64_t __read_mostly boot_count;
+
+s_time_t ticks_to_ns(uint64_t ticks)
+{
+    return muldiv64(ticks, SECONDS(1), 1000 * cpu_khz);
+}
+
+void __init preinit_xen_time(void)
+{
+    if ( !cpu_khz )
+        cpu_khz = 1000;
+
+    boot_count = get_cycles();
+}
+
+s_time_t get_s_time(void)
+{
+    uint64_t ticks = get_cycles() - boot_count;
+    return ticks_to_ns(ticks);
+}
+
+
+/* VCPU PV timers. */
+void send_timer_event(struct vcpu *v)
+{
+    send_guest_vcpu_virq(v, VIRQ_TIMER);
+}
+
+/* VCPU PV clock. */
+void update_vcpu_system_time(struct vcpu *v)
+{
+    /* XXX update shared_info->wc_* */
+}
+
+void domain_set_time_offset(struct domain *d, int64_t time_offset_seconds)
+{
+    d->time_offset_seconds = time_offset_seconds;
+}
+
+int reprogram_timer(s_time_t timeout)
+{
+    /* TODO */
+
+    return 0;
+}
-- 
2.25.0


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  parent reply	other threads:[~2020-01-22  5:14 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-22  1:58 [Xen-devel] [RFC XEN PATCH 00/23] xen: beginning support for RISC-V Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 01/23] HACK: OE Build changes Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 02/23] HACK: Makefile: Don't build Xen tools Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 03/23] riscv: makefiles and Kconfig Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 04/23] riscv: header files Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 05/23] riscv: early setup code Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 06/23] riscv: Add riscv to tools/libxc header files Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 07/23] riscv: Add asm-offsets.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 08/23] riscv: Add delay.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 09/23] riscv: Add domain.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 10/23] riscv: Add domctl.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 11/23] riscv: Add guestcopy.c Bobby Eshleman
2020-01-22  1:58 ` Bobby Eshleman [this message]
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 13/23] riscv: Add smp.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 14/23] riscv: Add shutdown.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 15/23] riscv: Add traps.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 16/23] riscv: Add irq.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 17/23] riscv: Add vm_event.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 18/23] riscv: Add p2m.c Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 19/23] riscv: Add the lib directory Bobby Eshleman
2020-06-22 11:38   ` Jan Beulich
2020-06-30  1:55     ` Bobby Eshleman
2020-01-22  1:58 ` [Xen-devel] [RFC XEN PATCH 20/23] riscv: Add smpboot.c Bobby Eshleman
2020-01-22  1:59 ` [Xen-devel] [RFC XEN PATCH 21/23] riscv: Add percpu.c Bobby Eshleman
2020-01-22  1:59 ` [Xen-devel] [RFC XEN PATCH 22/23] riscv: Add sysctl.c Bobby Eshleman
2020-06-22 11:43   ` Jan Beulich
2020-06-30  1:51     ` Bobby Eshleman
2020-01-22  1:59 ` [Xen-devel] [RFC XEN PATCH 23/23] riscv: Add iommu.c Bobby Eshleman
2020-01-22 14:57 ` [Xen-devel] [RFC XEN PATCH 00/23] xen: beginning support for RISC-V Andrew Cooper
2020-01-22 16:27   ` Lars Kurth
2020-01-23  5:31     ` Bobby Eshleman
2020-01-23 23:44       ` Lars Kurth
2020-01-25  1:59         ` Bobby Eshleman
2020-01-22 21:05   ` Stefano Stabellini
     [not found]     ` <20200123044527.GA5583@bobbye-pc>
2020-01-23  5:13       ` Bobby Eshleman
2020-01-23  5:19   ` Bobby Eshleman
2020-01-23 16:02     ` Andrew Cooper
2020-01-25  1:58       ` Bobby Eshleman
2020-01-23  8:25   ` Alistair Francis
2020-01-24 13:41 ` Andrew Cooper
2020-01-25  3:26   ` Bobby Eshleman
2020-01-25 17:11     ` Andrew Cooper
2020-01-28  3:37       ` Bobby Eshleman
2020-06-16  1:03 ` Stefano Stabellini
2020-06-16  1:08   ` Roman Shaposhnik
2020-06-16  1:10   ` Alistair Francis
2020-06-16  3:51     ` Bobby Eshleman
2020-06-16 20:16       ` Stefano Stabellini
2020-06-30  1:50         ` Bobby Eshleman

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