system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-09-06 09:10:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Change the peripheral driver list from a linker set to module driven

Browse source 
driver registration.  This should allow things like da, sa, cd etc to be
in seperate KLD's to the cam core and make them preloadable.
This commit is contained in:
Peter Wemm 2001-02-07 07:05:59 +00:00
parent 9d7227e565
commit 0b7c27b904
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=72119
12 changed files with 65 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
sys/cam/cam_periph.c
View file

@ -63,6 +63,29 @@ static void camperiphdone(struct cam_periph *periph,
union ccb *done_ccb);
static void camperiphfree(struct cam_periph *periph);
static int nperiph_drivers;
struct periph_driver **periph_drivers;
void
periphdriver_register(void *data)
{
struct periph_driver **newdrivers, **old;
int ndrivers;
ndrivers = nperiph_drivers + 2;
newdrivers = malloc(sizeof(*newdrivers) * ndrivers, M_TEMP, M_WAITOK);
if (periph_drivers)
bcopy(periph_drivers, newdrivers,
sizeof(*newdrivers) * ndrivers);
newdrivers[nperiph_drivers] = (struct periph_driver *)data;
newdrivers[nperiph_drivers + 1] = NULL;
old = periph_drivers;
periph_drivers = newdrivers;
if (old)
free(old, M_TEMP);
nperiph_drivers++;
}
cam_status
cam_periph_alloc(periph_ctor_t *periph_ctor,
periph_oninv_t *periph_oninvalidate,
@ -112,8 +135,7 @@ cam_periph_alloc(periph_ctor_t *periph_ctor,
init_level++;
for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
*p_drv != NULL; p_drv++) {
for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
if (strcmp((*p_drv)->driver_name, name) == 0)
break;
}
@ -201,8 +223,7 @@ cam_periph_find(struct cam_path *path, char *name)
struct cam_periph *periph;
int s;
for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
*p_drv != NULL; p_drv++) {
for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
if (name != NULL && (strcmp((*p_drv)->driver_name, name) != 0))
continue;
@ -401,8 +422,7 @@ camperiphfree(struct cam_periph *periph)
int s;
struct periph_driver **p_drv;
for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
*p_drv != NULL; p_drv++) {
for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) {
if (strcmp((*p_drv)->driver_name, periph->periph_name) == 0)
break;
}

25
sys/cam/cam_periph.h
View file

@ -37,7 +37,30 @@
extern struct cam_periph *xpt_periph;
extern struct linker_set periphdriver_set;
extern struct periph_driver **periph_drivers;
void periphdriver_register(void *);
#include <sys/module.h>
#define PERIPHDRIVER_DECLARE(name, driver) \
static int name ## _modevent(module_t mod, int type, void *data) \
{ \
switch (type) { \
case MOD_LOAD: \
periphdriver_register(data); \
break; \
case MOD_UNLOAD: \
printf(#name " module unload - not possible for this module type\n"); \
return EINVAL; \
} \
return 0; \
} \
static moduledata_t name ## _mod = { \
#name, \
name ## _modevent, \
(void *)&driver \
}; \
DECLARE_MODULE(name, name ## _mod, SI_SUB_DRIVERS, SI_ORDER_ANY); \
MODULE_DEPEND(name, cam, 1, 1, 1)
typedef void (periph_init_t)(void); /*
* Callback informing the peripheral driver

16
sys/cam/cam_xpt.c
View file

@ -576,8 +576,8 @@ static struct periph_driver probe_driver =
TAILQ_HEAD_INITIALIZER(probe_driver.units)
};
DATA_SET(periphdriver_set, xpt_driver);
DATA_SET(periphdriver_set, probe_driver);
PERIPHDRIVER_DECLARE(xpt, xpt_driver);
PERIPHDRIVER_DECLARE(probe, probe_driver);
#define XPT_CDEV_MAJOR 104
@ -1167,8 +1167,7 @@ xptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
cur_generation = xsoftc.generation;
/* first find our driver in the list of drivers */
for (p_drv = (struct periph_driver **)periphdriver_set.ls_items;
*p_drv != NULL; p_drv++)
for (p_drv = periph_drivers; *p_drv != NULL; p_drv++)
if (strcmp((*p_drv)->driver_name, name) == 0)
break;
@ -2342,9 +2341,7 @@ xptplistperiphfunc(struct cam_periph *periph, void *arg)
* peripheral driver linker set entry would cost
* more in the long run than doing this quick lookup.
*/
for (pdrv =
(struct periph_driver **)periphdriver_set.ls_items;
*pdrv != NULL; pdrv++) {
for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) {
if (strcmp((*pdrv)->driver_name,
periph->periph_name) == 0)
break;
@ -2546,8 +2543,7 @@ xptpdrvtraverse(struct periph_driver **start_pdrv,
* change while the system is running), the list traversal should
* be modified to work like the other traversal functions.
*/
for (pdrv = (start_pdrv ? start_pdrv :
(struct periph_driver **)periphdriver_set.ls_items);
for (pdrv = (start_pdrv ? start_pdrv : periph_drivers);
*pdrv != NULL; pdrv++) {
retval = tr_func(pdrv, arg);
@ -6210,7 +6206,7 @@ xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
if (busses_to_config == 0) {
/* Register all the peripheral drivers */
/* XXX This will have to change when we have loadable modules */
p_drv = (struct periph_driver **)periphdriver_set.ls_items;
p_drv = periph_drivers;
for (i = 0; p_drv[i] != NULL; i++) {
(*p_drv[i]->init)();
}

2
sys/cam/scsi/scsi_cd.c
View file

@ -245,7 +245,7 @@ static struct periph_driver cddriver =
TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, cddriver);
PERIPHDRIVER_DECLARE(cd, cddriver);
/* For 2.2-stable support */
#ifndef D_DISK

2
sys/cam/scsi/scsi_ch.c
View file

@ -209,7 +209,7 @@ static struct periph_driver chdriver =
TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, chdriver);
PERIPHDRIVER_DECLARE(ch, chdriver);
static struct cdevsw ch_cdevsw = {
/* open */ chopen,

2
sys/cam/scsi/scsi_da.c
View file

@ -299,7 +299,7 @@ static struct periph_driver dadriver =
TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, dadriver);
PERIPHDRIVER_DECLARE(da, dadriver);
#define DA_CDEV_MAJOR 13
#define DA_BDEV_MAJOR 4

2
sys/cam/scsi/scsi_pass.c
View file

@ -107,7 +107,7 @@ static struct periph_driver passdriver =
TAILQ_HEAD_INITIALIZER(passdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, passdriver);
PERIPHDRIVER_DECLARE(pass, passdriver);
static struct cdevsw pass_cdevsw = {
/* open */ passopen,

2
sys/cam/scsi/scsi_pt.c
View file

@ -114,7 +114,7 @@ static struct periph_driver ptdriver =
TAILQ_HEAD_INITIALIZER(ptdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, ptdriver);
PERIPHDRIVER_DECLARE(pt, ptdriver);
#define PT_CDEV_MAJOR 61

2
sys/cam/scsi/scsi_sa.c
View file

@ -402,7 +402,7 @@ static struct periph_driver sadriver =
TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, sadriver);
PERIPHDRIVER_DECLARE(sa, sadriver);
/* For 2.2-stable support */
#ifndef D_TAPE

2
sys/cam/scsi/scsi_ses.c
View file

@ -173,7 +173,7 @@ static struct periph_driver sesdriver = {
TAILQ_HEAD_INITIALIZER(sesdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, sesdriver);
PERIPHDRIVER_DECLARE(ses, sesdriver);
static struct cdevsw ses_cdevsw =
{

2
sys/cam/scsi/scsi_targ_bh.c
View file

@ -149,7 +149,7 @@ static struct periph_driver targbhdriver =
TAILQ_HEAD_INITIALIZER(targbhdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, targbhdriver);
PERIPHDRIVER_DECLARE(targbh, targbhdriver);
static void
targbhinit(void)

2
sys/cam/scsi/scsi_target.c
View file

@ -228,7 +228,7 @@ static struct periph_driver targdriver =
TAILQ_HEAD_INITIALIZER(targdriver.units), /* generation */ 0
};
DATA_SET(periphdriver_set, targdriver);
PERIPHDRIVER_DECLARE(targ, targdriver);
static struct extend_array *targperiphs;
static dev_t targ_ctl_dev;