subr_firmware.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/errno.h>
#include <sys/linker.h>
#include <sys/firmware.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/module.h>
#include <sys/eventhandler.h>
#include <sys/filedesc.h>
#include <sys/vnode.h>

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Data Structures
struct	priv_fw

Macros
#define	FW_INUSE(p)   ((p)->file != NULL || (p)->fw.name != NULL)
#define	FW_UNLOAD   0x100
#define	PRIV_FW(x)
#define	FIRMWARE_MAX   50

Functions
	__FBSDID ("$BSDSUniX$")
	MTX_SYSINIT (firmware,&firmware_mtx,"firmware table", MTX_DEF)
static struct priv_fw *	lookup (const char *name, struct priv_fw **empty_slot)
const struct firmware *	firmware_register (const char *imagename, const void *data, size_t datasize, unsigned int version, const struct firmware *parent)
int	firmware_unregister (const char *imagename)
static void	loadimage (void *arg, int npending)
const struct firmware *	firmware_get (const char *imagename)
void	firmware_put (const struct firmware *p, int flags)
static void	set_rootvnode (void *arg, int npending)
static void	firmware_mountroot (void *arg)
	EVENTHANDLER_DEFINE (mountroot, firmware_mountroot, NULL, 0)
static void	unloadentry (void *unused1, int unused2)
static int	firmware_modevent (module_t mod, int type, void *unused)
	DECLARE_MODULE (firmware, firmware_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST)
	MODULE_VERSION (firmware, 1)

Variables
static struct priv_fw	firmware_table [FIRMWARE_MAX]
static struct taskqueue *	firmware_tq
static struct task	firmware_unload_task
static struct mtx	firmware_mtx
static moduledata_t	firmware_mod

Macro Definition Documentation

#define FIRMWARE_MAX   50

Definition at line 124 of file subr_firmware.c.

Referenced by firmware_modevent(), lookup(), and unloadentry().

#define FW_INUSE

(

p

)

((p)->file != NULL || (p)->fw.name != NULL)

Definition at line 58 of file subr_firmware.c.

Referenced by lookup().

#define FW_UNLOAD   0x100

Definition at line 91 of file subr_firmware.c.

Referenced by firmware_modevent(), firmware_put(), and unloadentry().

#define PRIV_FW

(

x

)

Value:

((struct priv_fw *)             \
        ((intptr_t)(x) - offsetof(struct priv_fw, fw)) )

Definition at line 115 of file subr_firmware.c.

Referenced by firmware_put(), and firmware_register().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

DECLARE_MODULE	(	firmware	,
		firmware_mod	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST
	)

EVENTHANDLER_DEFINE	(	mountroot	,
		firmware_mountroot	,
		NULL	,
		0
	)

const struct firmware* firmware_get

(

const char *

imagename

)

Definition at line 298 of file subr_firmware.c.

References firmware_mtx, priv_fw::fw, loadimage(), lookup(), priv_fw::parent, printf(), priv_check(), priv_fw::refcnt, securelevel_gt(), and taskqueue_enqueue().

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static int firmware_modevent ( module_t  mod, int  type, void *  unused  )

static

Definition at line 476 of file subr_firmware.c.

References FIRMWARE_MAX, firmware_mountroot(), firmware_mtx, firmware_table, firmware_unload_task, priv_fw::flags, priv_fw::fw, FW_UNLOAD, printf(), priv_fw::refcnt, rootvnode, taskqueue_create(), taskqueue_drain(), taskqueue_enqueue(), taskqueue_free(), taskqueue_start_threads(), taskqueue_thread_enqueue(), and unloadentry().

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static void firmware_mountroot ( void *  arg )

static

Definition at line 402 of file subr_firmware.c.

References malloc(), printf(), set_rootvnode(), and taskqueue_enqueue().

Referenced by firmware_modevent().

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void firmware_put	(	const struct firmware *	p,
		int	flags
	)

Definition at line 357 of file subr_firmware.c.

References priv_fw::file, firmware_mtx, firmware_unload_task, priv_fw::flags, FW_UNLOAD, priv_fw::parent, PRIV_FW, priv_fw::refcnt, and taskqueue_enqueue().

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const struct firmware* firmware_register	(	const char *	imagename,
		const void *	data,
		size_t	datasize,
		unsigned int	version,
		const struct firmware *	parent
	)

Definition at line 174 of file subr_firmware.c.

References bootverbose, firmware_mtx, priv_fw::fw, lookup(), priv_fw::parent, printf(), and PRIV_FW.

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int firmware_unregister

(

const char *

imagename

)

Definition at line 216 of file subr_firmware.c.

References priv_fw::file, firmware_mtx, lookup(), and priv_fw::refcnt.

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static void loadimage ( void *  arg, int  npending  )

static

Definition at line 250 of file subr_firmware.c.

References priv_fw::file, firmware_mtx, linker_reference_module(), linker_release_module(), lookup(), printf(), result, and wakeup_one().

Referenced by firmware_get().

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static struct priv_fw* lookup ( const char *  name, struct priv_fw **  empty_slot  )

static

Definition at line 148 of file subr_firmware.c.

References dummy, FIRMWARE_MAX, firmware_table, priv_fw::fw, and FW_INUSE.

Referenced by firmware_get(), firmware_register(), firmware_unregister(), and loadimage().

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MODULE_VERSION	(	firmware	,
		1
	)

MTX_SYSINIT	(	firmware	,
		&	firmware_mtx,
		"firmware table"	,
		MTX_DEF
	)

static void set_rootvnode ( void *  arg, int  npending  )

static

Definition at line 378 of file subr_firmware.c.

References free(), and rootvnode.

Referenced by firmware_mountroot().

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static void unloadentry ( void *  unused1, int  unused2  )

static

Definition at line 423 of file subr_firmware.c.

References priv_fw::file, FIRMWARE_MAX, firmware_mtx, firmware_table, priv_fw::flags, priv_fw::fw, FW_UNLOAD, linker_release_module(), and priv_fw::refcnt.

Referenced by firmware_modevent().

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Variable Documentation

moduledata_t firmware_mod

static

Initial value:

= {
        "firmware",
        firmware_modevent,
        NULL
}

Definition at line 525 of file subr_firmware.c.

struct mtx firmware_mtx

static

Definition at line 137 of file subr_firmware.c.

Referenced by firmware_get(), firmware_modevent(), firmware_put(), firmware_register(), firmware_unregister(), loadimage(), and unloadentry().

struct priv_fw firmware_table[FIRMWARE_MAX]

static

Definition at line 125 of file subr_firmware.c.

Referenced by firmware_modevent(), lookup(), and unloadentry().

struct taskqueue* firmware_tq

static

Definition at line 131 of file subr_firmware.c.

struct task firmware_unload_task

static

Definition at line 132 of file subr_firmware.c.

Referenced by firmware_modevent(), and firmware_put().