111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <asm/lib/atomic.h>
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#include <sprintf.h>
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#include <asm/lib/spinlock.h>
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#include <asm/per_cpu.h>
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#include <npk_log.h>
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#include <logmsg.h>
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#include <ticks.h>
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/* buf size should be identical to the size in hvlog option, which is
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* transfered to SOS:
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* bsp/uefi/clearlinux/acrn.conf: hvlog=2M@0x1FE00000
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*/
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struct acrn_logmsg_ctl {
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uint32_t flags;
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int32_t seq;
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spinlock_t lock;
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};
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static struct acrn_logmsg_ctl logmsg_ctl;
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void init_logmsg(uint32_t flags)
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{
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logmsg_ctl.flags = flags;
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logmsg_ctl.seq = 0;
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spinlock_init(&(logmsg_ctl.lock));
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}
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void do_logmsg(uint32_t severity, const char *fmt, ...)
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{
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va_list args;
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uint64_t timestamp, rflags;
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uint16_t pcpu_id;
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bool do_console_log;
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bool do_mem_log;
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bool do_npk_log;
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char *buffer;
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struct thread_object *current;
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do_console_log = (((logmsg_ctl.flags & LOG_FLAG_STDOUT) != 0U) && (severity <= console_loglevel));
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do_mem_log = (((logmsg_ctl.flags & LOG_FLAG_MEMORY) != 0U) && (severity <= mem_loglevel));
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do_npk_log = ((logmsg_ctl.flags & LOG_FLAG_NPK) != 0U && (severity <= npk_loglevel));
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if (!do_console_log && !do_mem_log && !do_npk_log) {
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return;
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}
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/* Get time-stamp value */
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timestamp = cpu_ticks();
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/* Scale time-stamp appropriately */
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timestamp = ticks_to_us(timestamp);
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/* Get CPU ID */
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pcpu_id = get_pcpu_id();
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buffer = per_cpu(logbuf, pcpu_id);
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current = sched_get_current(pcpu_id);
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(void)memset(buffer, 0U, LOG_MESSAGE_MAX_SIZE);
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/* Put time-stamp, CPU ID and severity into buffer */
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snprintf(buffer, LOG_MESSAGE_MAX_SIZE, "[%luus][cpu=%hu][%s][sev=%u][seq=%u]:",
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timestamp, pcpu_id, current->name, severity, atomic_inc_return(&logmsg_ctl.seq));
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/* Put message into remaining portion of local buffer */
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va_start(args, fmt);
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vsnprintf(buffer + strnlen_s(buffer, LOG_MESSAGE_MAX_SIZE),
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LOG_MESSAGE_MAX_SIZE
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- strnlen_s(buffer, LOG_MESSAGE_MAX_SIZE), fmt, args);
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va_end(args);
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/* Check if flags specify to output to NPK */
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if (do_npk_log) {
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npk_log_write(buffer, strnlen_s(buffer, LOG_MESSAGE_MAX_SIZE));
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}
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/* Check if flags specify to output to stdout */
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if (do_console_log) {
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spinlock_irqsave_obtain(&(logmsg_ctl.lock), &rflags);
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/* Send buffer to stdout */
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printf("%s\n\r", buffer);
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spinlock_irqrestore_release(&(logmsg_ctl.lock), rflags);
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}
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/* Check if flags specify to output to memory */
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if (do_mem_log) {
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uint32_t i, msg_len;
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struct shared_buf *sbuf = per_cpu(sbuf, pcpu_id)[ACRN_HVLOG];
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/* If sbuf is not ready, we just drop the massage */
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if (sbuf != NULL) {
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msg_len = strnlen_s(buffer, LOG_MESSAGE_MAX_SIZE);
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for (i = 0U; i < (((msg_len - 1U) / LOG_ENTRY_SIZE) + 1U);
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i++) {
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(void)sbuf_put(sbuf, (uint8_t *)buffer +
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(i * LOG_ENTRY_SIZE));
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}
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}
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}
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}
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