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bugfix: 解决了xhci驱动程序无法在真机上获取设备描述符的bug

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This commit is contained in:
fslongjin
2022-09-04 20:57:00 +08:00
parent 2551e0a8c9
commit 94c960ae89
7 changed files with 106 additions and 102 deletions
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13
kernel/time/sleep.c
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@ -26,18 +26,17 @@ void nanosleep_handler(void *pcb)
*/
int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
{
int64_t total_ns = rqtp->tv_nsec;
if (total_ns < 0 || total_ns >= 1000000000)
if (rqtp->tv_nsec < 0 || rqtp->tv_nsec >= 1000000000)
return -EINVAL;
// 对于小于500us的时间，使用spin/rdtsc来进行定时
if (total_ns < 500000)
if (rqtp->tv_nsec < 500000)
{
kdebug("use rdtsc to nanosleep");
uint64_t expired_tsc = rdtsc() + (total_ns * Cpu_tsc_freq) / 1000000000;
uint64_t expired_tsc = rdtsc() + (((uint64_t)rqtp->tv_nsec) * Cpu_tsc_freq) / 1000000000;
while (rdtsc() < expired_tsc)
pause();
;
if (rmtp != NULL)
{
@ -51,7 +50,7 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
struct timer_func_list_t *sleep_task = (struct timer_func_list_t *)kmalloc(sizeof(struct timer_func_list_t), 0);
memset(sleep_task, 0, sizeof(struct timer_func_list_t));
timer_func_init_us(sleep_task, &nanosleep_handler, (void *)current_pcb, total_ns / 1000);
timer_func_init_us(sleep_task, &nanosleep_handler, (void *)current_pcb, rqtp->tv_nsec / 1000);
timer_func_add(sleep_task);