ll_schedule_domain.h File Reference

Low-Latency (LL) scheduling domain architecture, timer/DMA drivers, and core domain operations. More...

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Data Structures
struct	ll_schedule_domain_ops
	Low-Latency schedule domain operations table. More...
struct	ll_schedule_domain
	Low-Latency scheduling domain instance descriptor. More...

Macros
#define	LL_TIMER_PERIOD_US   1000ULL
	Default Low-Latency timer scheduling period in microseconds (1000us / 1ms).
#define	LL_WATCHDOG_TIMEOUT_US   (2 * LL_TIMER_PERIOD_US)
	Default Low-Latency watchdog timeout in microseconds.
#define	ll_sch_domain_set_pdata(domain, data)   ((domain)->priv_data = (data))
	Set the private data pointer of a Low-Latency scheduling domain.
#define	ll_sch_domain_get_pdata(domain)   ((domain)->priv_data)
	Retrieve the private data pointer of a Low-Latency scheduling domain.
#define	timer_domain_init(timer, clk)   zephyr_domain_init(clk)

Functions
static struct ll_schedule_domain *	timer_domain_get (void)
	Get the primary platform timer scheduling domain.
static struct ll_schedule_domain *	dma_domain_get (void)
	Get the primary platform DMA scheduling domain.
static struct ll_schedule_domain *	domain_init (int type, int clk, bool synchronous, const struct ll_schedule_domain_ops *ops)
	Initialize a Low-Latency scheduling domain descriptor.
static void	domain_set (struct ll_schedule_domain *domain, uint64_t start)
	Configure the next interrupt or tick timestamp for the domain.
static void	domain_clear (struct ll_schedule_domain *domain)
	Clear/disarm the interrupt tick for the domain.
static void	domain_task_cancel (struct ll_schedule_domain *domain, struct task *task)
	Notify the domain that a task has been cancelled.
static int	domain_register (struct ll_schedule_domain *domain, struct task *task, void(*handler)(void *arg), void *arg)
	Register a real-time task with the scheduling domain.
static void	domain_unregister (struct ll_schedule_domain *domain, struct task *task, uint32_t num_tasks)
	Unregister a real-time task from the scheduling domain.
static void	domain_enable (struct ll_schedule_domain *domain, int core)
	Enable Low-Latency scheduling domain execution on the specified core.
static void	domain_disable (struct ll_schedule_domain *domain, int core)
	Disable Low-Latency scheduling domain execution on the specified core.
static bool	domain_is_pending (struct ll_schedule_domain *domain, struct task *task, struct comp_dev **comp)
	Query whether a task in the domain has pending execution work.
struct ll_schedule_domain *	zephyr_ll_domain (void)
	Retrieve the global Low-Latency timer scheduling domain descriptor on Zephyr.
struct ll_schedule_domain *	zephyr_domain_init (int clk)
	Initialize the primary timer-driven Low-Latency scheduling domain on Zephyr.
int	zephyr_ll_task_sem_alloc (struct task *task)
	Allocate a completion semaphore for a Low-Latency task.
int	zephyr_ll_task_sem_free (struct task *task)
	Free a completion semaphore for a Low-Latency task.
struct ll_schedule_domain *	dma_multi_chan_domain_init (struct dma *dma_array, uint32_t num_dma, int clk, bool aggregated_irq)
	Initialize multi-channel DMA scheduling domain.
struct ll_schedule_domain *	dma_single_chan_domain_init (struct dma *dma_array, uint32_t num_dma, int clk)
	Initialize single-channel DMA scheduling domain.

Detailed Description

Low-Latency (LL) scheduling domain architecture, timer/DMA drivers, and core domain operations.