subr_bus_dma.c File Reference

#include <sys/cdefs.h>
#include "opt_bus.h"
#include "opt_iommu.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/systm.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/callout.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/mbuf.h>
#include <sys/memdesc.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>
#include <vm/pmap.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <opencrypto/cryptodev.h>
#include <machine/bus.h>

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Functions
	__FBSDID ("$FreeBSD$")
void	busdma_lock_mutex (void *arg, bus_dma_lock_op_t op)
void	_busdma_dflt_lock (void *arg, bus_dma_lock_op_t op)
static int	_bus_dmamap_load_vlist (bus_dma_tag_t dmat, bus_dmamap_t map, bus_dma_segment_t *list, int sglist_cnt, struct pmap *pmap, int *nsegs, int flags, size_t offset, size_t length)
static int	_bus_dmamap_load_plist (bus_dma_tag_t dmat, bus_dmamap_t map, bus_dma_segment_t *list, int sglist_cnt, int *nsegs, int flags)
static int	_bus_dmamap_load_mbuf_epg (bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m, bus_dma_segment_t *segs, int *nsegs, int flags)
static int	_bus_dmamap_load_single_mbuf (bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m, bus_dma_segment_t *segs, int *nsegs, int flags)
static int	_bus_dmamap_load_mbuf_sg (bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m0, bus_dma_segment_t *segs, int *nsegs, int flags)
static int	_bus_dmamap_load_bio (bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio, int *nsegs, int flags)
int	bus_dmamap_load_ma_triv (bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs, int *segp)
static int	_bus_dmamap_load_ccb (bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, int *nsegs, int flags)
static int	_bus_dmamap_load_uio (bus_dma_tag_t dmat, bus_dmamap_t map, struct uio *uio, int *nsegs, int flags)
int	bus_dmamap_load (bus_dma_tag_t dmat, bus_dmamap_t map, void *buf, bus_size_t buflen, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_mbuf (bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m0, bus_dmamap_callback2_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_mbuf_sg (bus_dma_tag_t dmat, bus_dmamap_t map, struct mbuf *m0, bus_dma_segment_t *segs, int *nsegs, int flags)
int	bus_dmamap_load_uio (bus_dma_tag_t dmat, bus_dmamap_t map, struct uio *uio, bus_dmamap_callback2_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_ccb (bus_dma_tag_t dmat, bus_dmamap_t map, union ccb *ccb, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_bio (bus_dma_tag_t dmat, bus_dmamap_t map, struct bio *bio, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_mem (bus_dma_tag_t dmat, bus_dmamap_t map, struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_crp_buffer (bus_dma_tag_t dmat, bus_dmamap_t map, struct crypto_buffer *cb, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
int	bus_dmamap_load_crp (bus_dma_tag_t dmat, bus_dmamap_t map, struct cryptop *crp, bus_dmamap_callback_t *callback, void *callback_arg, int flags)
void	bus_dma_template_init (bus_dma_template_t *t, bus_dma_tag_t parent)
int	bus_dma_template_tag (bus_dma_template_t *t, bus_dma_tag_t *dmat)
void	bus_dma_template_fill (bus_dma_template_t *t, bus_dma_param_t *kv, u_int count)
bool	bus_dma_iommu_set_buswide (device_t dev)
int	bus_dma_iommu_load_ident (bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t start, vm_size_t length, int flags)

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

_bus_dmamap_load_bio()

static int _bus_dmamap_load_bio ( bus_dma_tag_t  dmat, bus_dmamap_t  map, struct bio *  bio, int *  nsegs, int  flags  )

static

Definition at line 266 of file subr_bus_dma.c.

References _bus_dmamap_load_vlist(), and flags.

Referenced by _bus_dmamap_load_ccb(), bus_dmamap_load_bio(), and bus_dmamap_load_mem().

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_bus_dmamap_load_ccb()

static int _bus_dmamap_load_ccb ( bus_dma_tag_t  dmat, bus_dmamap_t  map, union ccb *  ccb, int *  nsegs, int  flags  )

static

Definition at line 311 of file subr_bus_dma.c.

References _bus_dmamap_load_bio(), _bus_dmamap_load_plist(), _bus_dmamap_load_vlist(), flags, and panic().

Referenced by bus_dmamap_load_ccb(), and bus_dmamap_load_mem().

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_bus_dmamap_load_mbuf_epg()

static int _bus_dmamap_load_mbuf_epg ( bus_dma_tag_t  dmat, bus_dmamap_t  map, struct mbuf *  m, bus_dma_segment_t *  segs, int *  nsegs, int  flags  )

static

Definition at line 159 of file subr_bus_dma.c.

References flags.

Referenced by _bus_dmamap_load_mbuf_sg(), and _bus_dmamap_load_single_mbuf().

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_bus_dmamap_load_mbuf_sg()

static int _bus_dmamap_load_mbuf_sg ( bus_dma_tag_t  dmat, bus_dmamap_t  map, struct mbuf *  m0, bus_dma_segment_t *  segs, int *  nsegs, int  flags  )

static

Definition at line 239 of file subr_bus_dma.c.

References _bus_dmamap_load_mbuf_epg(), and flags.

Referenced by bus_dmamap_load_crp_buffer(), bus_dmamap_load_mbuf(), bus_dmamap_load_mbuf_sg(), and bus_dmamap_load_mem().

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_bus_dmamap_load_plist()

static int _bus_dmamap_load_plist ( bus_dma_tag_t  dmat, bus_dmamap_t  map, bus_dma_segment_t *  list, int  sglist_cnt, int *  nsegs, int  flags  )

static

Definition at line 139 of file subr_bus_dma.c.

References flags.

Referenced by _bus_dmamap_load_ccb(), and bus_dmamap_load_mem().

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_bus_dmamap_load_single_mbuf()

static int _bus_dmamap_load_single_mbuf ( bus_dma_tag_t  dmat, bus_dmamap_t  map, struct mbuf *  m, bus_dma_segment_t *  segs, int *  nsegs, int  flags  )

static

Definition at line 218 of file subr_bus_dma.c.

References _bus_dmamap_load_mbuf_epg(), and flags.

Referenced by bus_dmamap_load_crp_buffer().

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_bus_dmamap_load_uio()

static int _bus_dmamap_load_uio ( bus_dma_tag_t  dmat, bus_dmamap_t  map, struct uio *  uio, int *  nsegs, int  flags  )

static

Definition at line 399 of file subr_bus_dma.c.

References addr, and flags.

Referenced by bus_dmamap_load_crp_buffer(), bus_dmamap_load_mem(), and bus_dmamap_load_uio().

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_bus_dmamap_load_vlist()

static int _bus_dmamap_load_vlist ( bus_dma_tag_t  dmat, bus_dmamap_t  map, bus_dma_segment_t *  list, int  sglist_cnt, struct pmap *  pmap, int *  nsegs, int  flags, size_t  offset, size_t  length  )

static

Definition at line 107 of file subr_bus_dma.c.

References addr, and flags.

Referenced by _bus_dmamap_load_bio(), _bus_dmamap_load_ccb(), and bus_dmamap_load_mem().

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_busdma_dflt_lock()

void _busdma_dflt_lock	(	void *	arg,
		bus_dma_lock_op_t	op
	)

Definition at line 94 of file subr_bus_dma.c.

References panic().

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bus_dma_iommu_load_ident()

int bus_dma_iommu_load_ident	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		vm_paddr_t	start,
		vm_size_t	length,
		int	flags
	)

Definition at line 899 of file subr_bus_dma.c.

bus_dma_iommu_set_buswide()

bool bus_dma_iommu_set_buswide

(

device_t

dev

)

Definition at line 893 of file subr_bus_dma.c.

bus_dma_template_fill()

void bus_dma_template_fill	(	bus_dma_template_t *	t,
		bus_dma_param_t *	kv,
		u_int	count
	)

Definition at line 835 of file subr_bus_dma.c.

References count.

bus_dma_template_init()

void bus_dma_template_init	(	bus_dma_template_t *	t,
		bus_dma_tag_t	parent
	)

Definition at line 804 of file subr_bus_dma.c.

References parent.

bus_dma_template_tag()

int bus_dma_template_tag	(	bus_dma_template_t *	t,
		bus_dma_tag_t *	dmat
	)

Definition at line 822 of file subr_bus_dma.c.

bus_dmamap_load()

int bus_dmamap_load	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		void *	buf,
		bus_size_t	buflen,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 441 of file subr_bus_dma.c.

References buf, callback, and flags.

bus_dmamap_load_bio()

int bus_dmamap_load_bio	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct bio *	bio,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 615 of file subr_bus_dma.c.

References _bus_dmamap_load_bio(), callback, and flags.

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bus_dmamap_load_ccb()

int bus_dmamap_load_ccb	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		union ccb *	ccb,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 565 of file subr_bus_dma.c.

References _bus_dmamap_load_ccb(), callback, and flags.

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bus_dmamap_load_crp()

int bus_dmamap_load_crp	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct cryptop *	crp,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 796 of file subr_bus_dma.c.

References bus_dmamap_load_crp_buffer(), callback, and flags.

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bus_dmamap_load_crp_buffer()

int bus_dmamap_load_crp_buffer	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct crypto_buffer *	cb,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 735 of file subr_bus_dma.c.

References _bus_dmamap_load_mbuf_sg(), _bus_dmamap_load_single_mbuf(), _bus_dmamap_load_uio(), callback, and flags.

Referenced by bus_dmamap_load_crp().

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bus_dmamap_load_ma_triv()

int bus_dmamap_load_ma_triv	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct vm_page **	ma,
		bus_size_t	tlen,
		int	ma_offs,
		int	flags,
		bus_dma_segment_t *	segs,
		int *	segp
	)

Definition at line 286 of file subr_bus_dma.c.

References flags.

bus_dmamap_load_mbuf()

int bus_dmamap_load_mbuf	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct mbuf *	m0,
		bus_dmamap_callback2_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 488 of file subr_bus_dma.c.

References _bus_dmamap_load_mbuf_sg(), callback, and flags.

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bus_dmamap_load_mbuf_sg()

int bus_dmamap_load_mbuf_sg	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct mbuf *	m0,
		bus_dma_segment_t *	segs,
		int *	nsegs,
		int	flags
	)

Definition at line 518 of file subr_bus_dma.c.

References _bus_dmamap_load_mbuf_sg(), and flags.

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bus_dmamap_load_mem()

int bus_dmamap_load_mem	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct memdesc *	mem,
		bus_dmamap_callback_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 659 of file subr_bus_dma.c.

References _bus_dmamap_load_bio(), _bus_dmamap_load_ccb(), _bus_dmamap_load_mbuf_sg(), _bus_dmamap_load_plist(), _bus_dmamap_load_uio(), _bus_dmamap_load_vlist(), callback, and flags.

Referenced by busdma_swi().

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bus_dmamap_load_uio()

int bus_dmamap_load_uio	(	bus_dma_tag_t	dmat,
		bus_dmamap_t	map,
		struct uio *	uio,
		bus_dmamap_callback2_t *	callback,
		void *	callback_arg,
		int	flags
	)

Definition at line 537 of file subr_bus_dma.c.

References _bus_dmamap_load_uio(), callback, and flags.

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busdma_lock_mutex()

void busdma_lock_mutex	(	void *	arg,
		bus_dma_lock_op_t	op
	)

Definition at line 69 of file subr_bus_dma.c.

References mtx, and panic().

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