diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/device_pgid.c | 48 | ||||
| -rw-r--r-- | drivers/s390/cio/io_sch.h | 5 |
2 files changed, 43 insertions, 10 deletions
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c index 908d287f66c1..6f2987d8da99 100644 --- a/drivers/s390/cio/device_pgid.c +++ b/drivers/s390/cio/device_pgid.c @@ -102,10 +102,20 @@ static void nop_callback(struct ccw_device *cdev, void *data, int rc) struct subchannel *sch = to_subchannel(cdev->dev.parent); struct ccw_request *req = &cdev->private->req; - if (rc == 0) + switch (rc) { + case 0: sch->vpm |= req->lpm; - else if (rc != -EACCES) + break; + case -ETIME: + cdev->private->path_noirq_mask |= req->lpm; + break; + case -EACCES: + cdev->private->path_notoper_mask |= req->lpm; + break; + default: goto err; + } + /* Continue on the next path. */ req->lpm >>= 1; nop_do(cdev); return; @@ -174,7 +184,12 @@ static void spid_callback(struct ccw_device *cdev, void *data, int rc) case 0: sch->vpm |= req->lpm & sch->opm; break; + case -ETIME: + cdev->private->flags.pgid_unknown = 1; + cdev->private->path_noirq_mask |= req->lpm; + break; case -EACCES: + cdev->private->path_notoper_mask |= req->lpm; break; case -EOPNOTSUPP: if (cdev->private->flags.mpath) { @@ -404,10 +419,21 @@ static void snid_callback(struct ccw_device *cdev, void *data, int rc) { struct ccw_request *req = &cdev->private->req; - if (rc == 0) + switch (rc) { + case 0: cdev->private->pgid_valid_mask |= req->lpm; - else if (rc != -EACCES) + break; + case -ETIME: + cdev->private->flags.pgid_unknown = 1; + cdev->private->path_noirq_mask |= req->lpm; + break; + case -EACCES: + cdev->private->path_notoper_mask |= req->lpm; + break; + default: goto err; + } + /* Continue on the next path. */ req->lpm >>= 1; snid_do(cdev); return; @@ -427,6 +453,13 @@ static void verify_start(struct ccw_device *cdev) sch->vpm = 0; sch->lpm = sch->schib.pmcw.pam; + + /* Initialize PGID data. */ + memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid)); + cdev->private->pgid_valid_mask = 0; + cdev->private->pgid_todo_mask = sch->schib.pmcw.pam; + cdev->private->path_notoper_mask = 0; + /* Initialize request data. */ memset(req, 0, sizeof(*req)); req->timeout = PGID_TIMEOUT; @@ -459,14 +492,8 @@ static void verify_start(struct ccw_device *cdev) */ void ccw_device_verify_start(struct ccw_device *cdev) { - struct subchannel *sch = to_subchannel(cdev->dev.parent); - CIO_TRACE_EVENT(4, "vrfy"); CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id)); - /* Initialize PGID data. */ - memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid)); - cdev->private->pgid_valid_mask = 0; - cdev->private->pgid_todo_mask = sch->schib.pmcw.pam; /* * Initialize pathgroup and multipath state with target values. * They may change in the course of path verification. @@ -474,6 +501,7 @@ void ccw_device_verify_start(struct ccw_device *cdev) cdev->private->flags.pgroup = cdev->private->options.pgroup; cdev->private->flags.mpath = cdev->private->options.mpath; cdev->private->flags.doverify = 0; + cdev->private->path_noirq_mask = 0; verify_start(cdev); } diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index 76253dfcc1be..b108f4a5c7dd 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -126,6 +126,10 @@ struct ccw_device_private { u8 pgid_valid_mask; /* mask of valid PGIDs */ u8 pgid_todo_mask; /* mask of PGIDs to be adjusted */ u8 pgid_reset_mask; /* mask of PGIDs which were reset */ + u8 path_noirq_mask; /* mask of paths for which no irq was + received */ + u8 path_notoper_mask; /* mask of paths which were found + not operable */ u8 path_gone_mask; /* mask of paths, that became unavailable */ u8 path_new_mask; /* mask of paths, that became available */ struct { @@ -145,6 +149,7 @@ struct ccw_device_private { unsigned int resuming:1; /* recognition while resume */ unsigned int pgroup:1; /* pathgroup is set up */ unsigned int mpath:1; /* multipathing is set up */ + unsigned int pgid_unknown:1;/* unknown pgid state */ unsigned int initialized:1; /* set if initial reference held */ } __attribute__((packed)) flags; unsigned long intparm; /* user interruption parameter */ |