d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make pass, sg and targ drivers respect HBA's maxio.

Browse Source 
Previous limitation of 64K (DFLTPHYS) is quite annoying.
This commit is contained in:
Alexander Motin 2015-09-30 13:31:37 +00:00
parent 2aea45f0d5
commit de2393124c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=288420
7 changed files with 36 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/cam/cam_compat.c
View File

@ -300,7 +300,7 @@ cam_compat_translate_dev_match_0x18(union ccb *ccb)
/* Remap the CCB into kernel address space */
bzero(&mapinfo, sizeof(mapinfo));
cam_periph_mapmem(ccb, &mapinfo);
cam_periph_mapmem(ccb, &mapinfo, MAXPHYS);
dm = ccb->cdm.matches;
/* Translate in-place: old fields are smaller */

9
sys/cam/cam_periph.c
View File

@ -716,16 +716,19 @@ camperiphfree(struct cam_periph *periph)
* buffers to map stuff in and out, we're limited to the buffer size.
*/
int
cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo)
cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo,
u_int maxmap)
{
int numbufs, i, j;
int flags[CAM_PERIPH_MAXMAPS];
u_int8_t **data_ptrs[CAM_PERIPH_MAXMAPS];
u_int32_t lengths[CAM_PERIPH_MAXMAPS];
u_int32_t dirs[CAM_PERIPH_MAXMAPS];
/* Some controllers may not be able to handle more data. */
size_t maxmap = DFLTPHYS;
if (maxmap == 0)
maxmap = DFLTPHYS; /* traditional default */
else if (maxmap > MAXPHYS)
maxmap = MAXPHYS; /* for safety */
switch(ccb->ccb_h.func_code) {
case XPT_DEV_MATCH:
if (ccb->cdm.match_buf_len == 0) {

3
sys/cam/cam_periph.h
View File

@ -160,7 +160,8 @@ int cam_periph_hold(struct cam_periph *periph, int priority);
void cam_periph_unhold(struct cam_periph *periph);
void cam_periph_invalidate(struct cam_periph *periph);
int cam_periph_mapmem(union ccb *ccb,
struct cam_periph_map_info *mapinfo);
struct cam_periph_map_info *mapinfo,
u_int maxmap);
void cam_periph_unmapmem(union ccb *ccb,
struct cam_periph_map_info *mapinfo);
union ccb *cam_periph_getccb(struct cam_periph *periph,

2
sys/cam/cam_xpt.c
View File

@ -536,7 +536,7 @@ xptdoioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *
* Map the pattern and match buffers into kernel
* virtual address space.
*/
error = cam_periph_mapmem(inccb, &mapinfo);
error = cam_periph_mapmem(inccb, &mapinfo, MAXPHYS);
if (error) {
inccb->ccb_h.path = old_path;

10
sys/cam/scsi/scsi_pass.c
View File

@ -77,6 +77,7 @@ struct pass_softc {
u_int8_t pd_type;
union ccb saved_ccb;
int open_count;
u_int maxio;
struct devstat *device_stats;
struct cdev *dev;
struct cdev *alias_dev;
@ -366,6 +367,13 @@ passregister(struct cam_periph *periph, void *arg)
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
if (cpi.maxio == 0)
softc->maxio = DFLTPHYS; /* traditional default */
else if (cpi.maxio > MAXPHYS)
softc->maxio = MAXPHYS; /* for safety */
else
softc->maxio = cpi.maxio; /* real value */
/*
* We pass in 0 for a blocksize, since we don't
* know what the blocksize of this device is, if
@ -657,7 +665,7 @@ passsendccb(struct cam_periph *periph, union ccb *ccb, union ccb *inccb)
* Dropping it here is reasonably safe.
*/
cam_periph_unlock(periph);
error = cam_periph_mapmem(ccb, &mapinfo);
error = cam_periph_mapmem(ccb, &mapinfo, softc->maxio);
cam_periph_lock(periph);
/*

10
sys/cam/scsi/scsi_sg.c
View File

@ -99,6 +99,7 @@ struct sg_softc {
sg_state state;
sg_flags flags;
int open_count;
u_int maxio;
struct devstat *device_stats;
TAILQ_HEAD(, sg_rdwr) rdwr_done;
struct cdev *dev;
@ -325,6 +326,13 @@ sgregister(struct cam_periph *periph, void *arg)
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
if (cpi.maxio == 0)
softc->maxio = DFLTPHYS; /* traditional default */
else if (cpi.maxio > MAXPHYS)
softc->maxio = MAXPHYS; /* for safety */
else
softc->maxio = cpi.maxio; /* real value */
/*
* We pass in 0 for all blocksize, since we don't know what the
* blocksize of the device is, if it even has a blocksize.
@ -894,7 +902,7 @@ sgsendccb(struct cam_periph *periph, union ccb *ccb)
* need for additional checks.
*/
cam_periph_unlock(periph);
error = cam_periph_mapmem(ccb, &mapinfo);
error = cam_periph_mapmem(ccb, &mapinfo, softc->maxio);
cam_periph_lock(periph);
if (error)
return (error);

9
sys/cam/scsi/scsi_target.c
View File

@ -94,6 +94,7 @@ struct targ_softc {
struct cam_periph *periph;
struct cam_path *path;
targ_state state;
u_int maxio;
struct selinfo read_select;
struct devstat device_stats;
};
@ -403,6 +404,12 @@ targenable(struct targ_softc *softc, struct cam_path *path, int grp6_len,
status = CAM_FUNC_NOTAVAIL;
goto enable_fail;
}
if (cpi.maxio == 0)
softc->maxio = DFLTPHYS; /* traditional default */
else if (cpi.maxio > MAXPHYS)
softc->maxio = MAXPHYS; /* for safety */
else
softc->maxio = cpi.maxio; /* real value */
/* Destroy any periph on our path if it is disabled */
periph = cam_periph_find(path, "targ");
@ -725,7 +732,7 @@ targsendccb(struct targ_softc *softc, union ccb *ccb,
if ((ccb_h->func_code == XPT_CONT_TARGET_IO) ||
(ccb_h->func_code == XPT_DEV_MATCH)) {
error = cam_periph_mapmem(ccb, mapinfo);
error = cam_periph_mapmem(ccb, mapinfo, softc->maxio);
/*
* cam_periph_mapmem returned an error, we can't continue.