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d0a77f558e
A negative value in the timeout duration does not have any special uses, so change the duration type to u32 (from just int). Delete some unnecessary typecasts to int. Also change MAX_SCHEDULE_TIMEOUT to ULONG_MAX in default gr idle timeout because the value is in milliseconds instead of scheduling units and to drop unnecessary Linux dependency. Change-Id: I5cf6febd4f1cb00c46fe159603436a9ac3b003ac Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: https://git-master/r/1512565 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/*
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* Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __NVGPU_TIMERS_H__
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#define __NVGPU_TIMERS_H__
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#include <nvgpu/types.h>
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struct gk20a;
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/*
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* struct nvgpu_timeout - define a timeout.
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*
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* There are two types of timer suported:
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*
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* o NVGPU_TIMER_CPU_TIMER
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* Timer uses the CPU to measure the timeout.
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*
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* o NVGPU_TIMER_RETRY_TIMER
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* Instead of measuring a time limit keep track of the number of times
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* something has been attempted. After said limit, "expire" the timer.
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*
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* Available flags:
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*
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* o NVGPU_TIMER_NO_PRE_SI
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* By default when the system is not running on silicon the timeout
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* code will ignore the requested timeout. Specifying this flag will
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* override that behavior and honor the timeout regardless of platform.
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*
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* o NVGPU_TIMER_SILENT_TIMEOUT
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* Do not print any messages on timeout. Normally a simple message is
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* printed that specifies where the timeout occurred.
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*/
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struct nvgpu_timeout {
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struct gk20a *g;
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unsigned int flags;
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union {
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s64 time;
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struct {
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u32 max;
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u32 attempted;
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} retries;
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};
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};
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/*
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* Bit 0 specifies the type of timer: CPU or retry.
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*/
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#define NVGPU_TIMER_CPU_TIMER (0x0)
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#define NVGPU_TIMER_RETRY_TIMER (0x1)
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/*
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* Bits 1 through 7 are reserved; bits 8 and up are flags:
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*/
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#define NVGPU_TIMER_NO_PRE_SI (0x1 << 8)
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#define NVGPU_TIMER_SILENT_TIMEOUT (0x1 << 9)
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#define NVGPU_TIMER_FLAG_MASK (NVGPU_TIMER_RETRY_TIMER | \
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NVGPU_TIMER_NO_PRE_SI | \
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NVGPU_TIMER_SILENT_TIMEOUT)
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int nvgpu_timeout_init(struct gk20a *g, struct nvgpu_timeout *timeout,
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u32 duration, unsigned long flags);
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int nvgpu_timeout_peek_expired(struct nvgpu_timeout *timeout);
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#define nvgpu_timeout_expired(__timeout) \
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__nvgpu_timeout_expired_msg(__timeout, (void *)_THIS_IP_, "")
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#define nvgpu_timeout_expired_msg(__timeout, fmt, args...) \
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__nvgpu_timeout_expired_msg(__timeout, (void *)_THIS_IP_, \
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fmt, ##args)
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/*
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* Don't use this directly.
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*/
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int __nvgpu_timeout_expired_msg(struct nvgpu_timeout *timeout,
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void *caller, const char *fmt, ...);
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/*
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* Waits and delays.
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*/
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void nvgpu_msleep(unsigned int msecs);
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void nvgpu_usleep_range(unsigned int min_us, unsigned int max_us);
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void nvgpu_udelay(unsigned int usecs);
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/*
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* Timekeeping.
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*/
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s64 nvgpu_current_time_ms(void);
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#endif
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