From 01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 Mon Sep 17 00:00:00 2001
From: Joshua Bakita <bakitajoshua@gmail.com>
Date: Wed, 28 Jun 2023 18:24:25 -0400
Subject: Include nvgpu headers

These are needed to build on NVIDIA's Jetson boards for the time
being. Only a couple structs are required, so it should be fairly
easy to remove this dependency at some point in the future.
---
 include/os/posix/timers.c | 169 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 169 insertions(+)
 create mode 100644 include/os/posix/timers.c

(limited to 'include/os/posix/timers.c')

diff --git a/include/os/posix/timers.c b/include/os/posix/timers.c
new file mode 100644
index 0000000..c84b0de
--- /dev/null
+++ b/include/os/posix/timers.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <sys/time.h>
+
+#include <nvgpu/bug.h>
+#include <nvgpu/log.h>
+#include <nvgpu/timers.h>
+
+static s64 now(void)
+{
+	return nvgpu_current_time_ms();
+}
+
+/*
+ * Returns true if a > b;
+ */
+static bool time_after(s64 a, s64 b)
+{
+	return a - b > 0;
+}
+
+int nvgpu_timeout_init(struct gk20a *g, struct nvgpu_timeout *timeout,
+		       u32 duration, unsigned long flags)
+{
+	if (flags & ~NVGPU_TIMER_FLAG_MASK)
+		return -EINVAL;
+
+	memset(timeout, 0, sizeof(*timeout));
+
+	timeout->g = g;
+	timeout->flags = flags;
+
+	if (flags & NVGPU_TIMER_RETRY_TIMER)
+		timeout->retries.max = duration;
+	else
+		timeout->time = nvgpu_current_time_ms() + (s64)duration;
+
+	return 0;
+}
+
+static int __nvgpu_timeout_expired_msg_cpu(struct nvgpu_timeout *timeout,
+					 void *caller,
+					 const char *fmt, va_list args)
+{
+	struct gk20a *g = timeout->g;
+
+	if (time_after(now(), timeout->time)) {
+		if (!(timeout->flags & NVGPU_TIMER_SILENT_TIMEOUT)) {
+			char buf[128];
+
+			vsnprintf(buf, sizeof(buf), fmt, args);
+
+			nvgpu_err(g, "Timeout detected @ %p %s", caller, buf);
+		}
+
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int __nvgpu_timeout_expired_msg_retry(struct nvgpu_timeout *timeout,
+					   void *caller,
+					   const char *fmt, va_list args)
+{
+	struct gk20a *g = timeout->g;
+
+	if (timeout->retries.attempted >= timeout->retries.max) {
+		if (!(timeout->flags & NVGPU_TIMER_SILENT_TIMEOUT)) {
+			char buf[128];
+
+			vsnprintf(buf, sizeof(buf), fmt, args);
+
+			nvgpu_err(g, "No more retries @ %p %s", caller, buf);
+		}
+
+		return -ETIMEDOUT;
+	}
+
+	timeout->retries.attempted++;
+
+	return 0;
+}
+
+int __nvgpu_timeout_expired_msg(struct nvgpu_timeout *timeout,
+			      void *caller, const char *fmt, ...)
+{
+	int ret;
+	va_list args;
+
+	va_start(args, fmt);
+	if (timeout->flags & NVGPU_TIMER_RETRY_TIMER)
+		ret = __nvgpu_timeout_expired_msg_retry(timeout, caller, fmt,
+						      args);
+	else
+		ret = __nvgpu_timeout_expired_msg_cpu(timeout, caller, fmt,
+						    args);
+	va_end(args);
+
+	return ret;
+}
+
+int nvgpu_timeout_peek_expired(struct nvgpu_timeout *timeout)
+{
+	if (timeout->flags & NVGPU_TIMER_RETRY_TIMER)
+		return timeout->retries.attempted >= timeout->retries.max;
+	else
+		return time_after(now(), timeout->time);
+}
+
+void nvgpu_udelay(unsigned int usecs)
+{
+	BUG();
+}
+
+void nvgpu_usleep_range(unsigned int min_us, unsigned int max_us)
+{
+	BUG();
+}
+
+void nvgpu_msleep(unsigned int msecs)
+{
+	BUG();
+}
+
+static inline s64 __nvgpu_current_time_us(void)
+{
+	struct timeval now;
+	s64 time_now;
+	int ret;
+
+	ret = gettimeofday(&now, NULL);
+	if (ret != 0)
+		BUG();
+
+	time_now = ((s64)now.tv_sec * (s64)1000000) + (s64)now.tv_usec;
+
+	return time_now;
+}
+
+s64 nvgpu_current_time_ms(void)
+{
+	return __nvgpu_current_time_us() / (s64)1000;
+}
+
+u64 nvgpu_hr_timestamp(void)
+{
+	return __nvgpu_current_time_us();
+}
-- 
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