include/linux/soc/ixp4xx/qmgr.h

Source file repositories/reference/linux-study-clean/include/linux/soc/ixp4xx/qmgr.h

File Facts

System
Linux kernel
Corpus path
include/linux/soc/ixp4xx/qmgr.h
Extension
.h
Size
2844 bytes
Lines
89
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct qmgr_regs {
	u32 acc[QUEUES][MAX_QUEUE_LENGTH]; /* 0x000 - 0x3FF */
	u32 stat1[4];		/* 0x400 - 0x40F */
	u32 stat2[2];		/* 0x410 - 0x417 */
	u32 statne_h;		/* 0x418 - queue nearly empty */
	u32 statf_h;		/* 0x41C - queue full */
	u32 irqsrc[4];		/* 0x420 - 0x42F IRC source */
	u32 irqen[2];		/* 0x430 - 0x437 IRQ enabled */
	u32 irqstat[2];		/* 0x438 - 0x43F - IRQ access only */
	u32 reserved[1776];
	u32 sram[2048];		/* 0x2000 - 0x3FFF - config and buffer */
};

void qmgr_put_entry(unsigned int queue, u32 val);
u32 qmgr_get_entry(unsigned int queue);
int qmgr_stat_empty(unsigned int queue);
int qmgr_stat_below_low_watermark(unsigned int queue);
int qmgr_stat_full(unsigned int queue);
int qmgr_stat_overflow(unsigned int queue);
void qmgr_release_queue(unsigned int queue);
void qmgr_set_irq(unsigned int queue, int src,
		  void (*handler)(void *pdev), void *pdev);
void qmgr_enable_irq(unsigned int queue);
void qmgr_disable_irq(unsigned int queue);

/* request_ and release_queue() must be called from non-IRQ context */

#if DEBUG_QMGR
extern char qmgr_queue_descs[QUEUES][32];

int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
		       unsigned int nearly_empty_watermark,
		       unsigned int nearly_full_watermark,
		       const char *desc_format, const char* name);
#else
int __qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */,
			 unsigned int nearly_empty_watermark,
			 unsigned int nearly_full_watermark);
#define qmgr_request_queue(queue, len, nearly_empty_watermark,		\
			   nearly_full_watermark, desc_format, name)	\
	__qmgr_request_queue(queue, len, nearly_empty_watermark,	\
			     nearly_full_watermark)
#endif

#endif

Annotation

Implementation Notes