subr_mbpool.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/mbpool.h>

Include dependency graph for subr_mbpool.c:

Go to the source code of this file.

Data Structures
struct	mbtrail
struct	mbfree
struct	mbpage
struct	mbpool

Macros
#define	MBP_CARD   0x8000
#define	MBP_USED   0x4000
#define	MBP_PMSK   0x3fff /* page number mask */
#define	MBP_CMSK   0x01ff /* chunk number mask */
#define	C2T(P, C)
#define	N2C(P, PG, C)
#define	HMAKE(P, C)   ((((P) & MBP_PMSK) << 16) | ((C) << 7))
#define	HPAGE(H)   (((H) >> 16) & MBP_PMSK)
#define	HCHUNK(H)   (((H) >> 7) & MBP_CMSK)

Functions
	__FBSDID ("$BSDSUniX$")
	MODULE_VERSION (libmbpool, 1)
static	MALLOC_DEFINE (M_MBPOOL,"mbpools","mbuf pools")
int	mbp_create (struct mbpool **pp, const char *name, bus_dma_tag_t dmat, u_int max_pages, size_t page_size, size_t chunk_size)
void	mbp_destroy (struct mbpool *p)
static void	mbp_callback (void *arg, bus_dma_segment_t *segs, int nsegs, int error)
static void	mbp_alloc_page (struct mbpool *p)
void *	mbp_alloc (struct mbpool *p, bus_addr_t *pap, uint32_t *hp)
void	mbp_free (struct mbpool *p, void *ptr)
void	mbp_ext_free (void *buf, void *arg)
void	mbp_card_free (struct mbpool *p)
void	mbp_count (struct mbpool *p, u_int *used, u_int *card, u_int *free)
void *	mbp_get (struct mbpool *p, uint32_t h)
void *	mbp_get_keep (struct mbpool *p, uint32_t h)
void	mbp_sync (struct mbpool *p, uint32_t h, bus_addr_t off, bus_size_t len, u_int op)

Macro Definition Documentation

#define C2T	(		P,
			C
	)

Value:

((struct mbtrail *)((char *)(C) + (P)->chunk_size - \
                            sizeof(struct mbtrail)))

Definition at line 98 of file subr_mbpool.c.

Referenced by mbp_alloc(), mbp_alloc_page(), mbp_card_free(), mbp_count(), mbp_destroy(), mbp_free(), mbp_get(), and mbp_get_keep().

#define HCHUNK

(

H

)

(((H) >> 7) & MBP_CMSK)

Definition at line 112 of file subr_mbpool.c.

Referenced by mbp_get(), mbp_get_keep(), and mbp_sync().

#define HMAKE	(		P,
			C
	)		((((P) & MBP_PMSK) << 16) | ((C) << 7))

Definition at line 110 of file subr_mbpool.c.

Referenced by mbp_alloc().

#define HPAGE

(

H

)

(((H) >> 16) & MBP_PMSK)

Definition at line 111 of file subr_mbpool.c.

Referenced by mbp_get(), mbp_get_keep(), and mbp_sync().

#define MBP_CARD   0x8000

Definition at line 64 of file subr_mbpool.c.

Referenced by mbp_alloc(), mbp_card_free(), mbp_count(), mbp_destroy(), mbp_free(), mbp_get(), and mbp_get_keep().

#define MBP_CMSK   0x01ff /* chunk number mask */

Definition at line 67 of file subr_mbpool.c.

#define MBP_PMSK   0x3fff /* page number mask */

Definition at line 66 of file subr_mbpool.c.

Referenced by mbp_card_free().

#define MBP_USED   0x4000

Definition at line 65 of file subr_mbpool.c.

Referenced by mbp_alloc(), mbp_count(), mbp_destroy(), and mbp_free().

#define N2C	(		P,
			PG,
			C
	)

Value:

((struct mbfree *)((char *)(PG)->va + \
                            (C) * (P)->chunk_size))

Definition at line 104 of file subr_mbpool.c.

Referenced by mbp_alloc_page(), mbp_card_free(), mbp_count(), mbp_destroy(), mbp_get(), and mbp_get_keep().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

static MALLOC_DEFINE ( M_MBPOOL  , "mbpools"  , "mbuf pools"    )

static

void* mbp_alloc	(	struct mbpool *	p,
		bus_addr_t *	pap,
		uint32_t *	hp
	)

Definition at line 237 of file subr_mbpool.c.

References C2T, mbtrail::chunk, mbpool::chunk_size, mbpool::free_lock, HMAKE, mbp_alloc_page(), MBP_CARD, MBP_USED, and mbtrail::page.

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static void mbp_alloc_page ( struct mbpool *  p )

static

Definition at line 194 of file subr_mbpool.c.

References bus_dmamap_load(), C2T, mbtrail::chunk, mbpool::dmat, mbpage::map, mbpool::max_pages, mbp_callback(), N2C, mbpool::name, mbtrail::page, mbpool::page_size, mbpage::phy, printf(), and mbpage::va.

Referenced by mbp_alloc().

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static void mbp_callback ( void *  arg, bus_dma_segment_t *  segs, int  nsegs, int  error  )

static

Definition at line 184 of file subr_mbpool.c.

Referenced by mbp_alloc_page().

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void mbp_card_free

(

struct mbpool *

p

)

Definition at line 292 of file subr_mbpool.c.

References C2T, mbpool::free_lock, MBP_CARD, MBP_PMSK, N2C, and mbtrail::page.

void mbp_count	(	struct mbpool *	p,
		u_int *	used,
		u_int *	card,
		u_int *	free
	)

Definition at line 318 of file subr_mbpool.c.

References C2T, mbpool::free_lock, MBP_CARD, MBP_USED, N2C, and mbtrail::page.

int mbp_create	(	struct mbpool **	pp,
		const char *	name,
		bus_dma_tag_t	dmat,
		u_int	max_pages,
		size_t	page_size,
		size_t	chunk_size
	)

Definition at line 118 of file subr_mbpool.c.

References mbpool::chunk_size, mbpool::dmat, malloc(), mbpool::max_pages, mtx_init(), mbpool::name, and mbpool::page_size.

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void mbp_destroy

(

struct mbpool *

p

)

Definition at line 150 of file subr_mbpool.c.

References C2T, mbpool::dmat, free(), mbpool::free_lock, mbpage::map, MBP_CARD, MBP_USED, mtx_destroy(), N2C, mbpool::name, mbtrail::page, printf(), and mbpage::va.

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void mbp_ext_free	(	void *	buf,
		void *	arg
	)

Definition at line 283 of file subr_mbpool.c.

References mbp_free().

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void mbp_free	(	struct mbpool *	p,
		void *	ptr
	)

Definition at line 268 of file subr_mbpool.c.

References C2T, mbpool::free_lock, MBP_CARD, MBP_USED, and mbtrail::page.

Referenced by mbp_ext_free().

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void* mbp_get	(	struct mbpool *	p,
		uint32_t	h
	)

Definition at line 346 of file subr_mbpool.c.

References C2T, HCHUNK, HPAGE, MBP_CARD, N2C, mbpool::name, mbtrail::page, and printf().

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void* mbp_get_keep	(	struct mbpool *	p,
		uint32_t	h
	)

Definition at line 368 of file subr_mbpool.c.

References C2T, HCHUNK, HPAGE, MBP_CARD, N2C, mbpool::name, mbtrail::page, and printf().

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void mbp_sync	(	struct mbpool *	p,
		uint32_t	h,
		bus_addr_t	off,
		bus_size_t	len,
		u_int	op
	)

Definition at line 389 of file subr_mbpool.c.

References mbpool::chunk_size, mbpool::dmat, HCHUNK, and HPAGE.

MODULE_VERSION	(	libmbpool	,
		1
	)