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authorStephen Cameron <stephenmcameron@gmail.com>2015-04-23 17:31:47 +0300
committerJames Bottomley <JBottomley@Odin.com>2015-05-31 21:20:24 +0300
commit41ce4c355765a5e0a8e1c8ff8d7257160bbae93d (patch)
treed876204ee2e897dc2a6ba55acdaa6ce0290c7fcc /drivers/scsi/hpsa_cmd.h
parent6b6c1cd7da65225d61107bbe87495450cc0c5b11 (diff)
downloadlinux-41ce4c355765a5e0a8e1c8ff8d7257160bbae93d.tar.xz
hpsa: add masked physical devices into h->dev[] array
Cache the ioaccel handle so that when we need to abort commands sent down the ioaccel2 path, we can look up the LUN ID in h->dev[] instead of having to do I/O to the controller. Add a field to elements in h->dev[] to keep track of how the device is exposed to the SCSI mid layer: Not at all, without an upper level driver (no_uld_attach) or normally exposed. Since masked physical devices are now present in h->dev[] array it would be perfectly possible to do echo scsi add-single-device 2 2 0 0 > /proc/scsi/scsi and bring them online. This was previously not allowed for masked physical devices. Ensure that the mapping of physical disks to logical drives gets updated in a consistent way when a RAID migration occurs and is not touched until updates to it are complete. now instead of doing CISS_REPORT_PHYSICAL to get the LUNID for the physical disk in hpsa_get_pdisk_of_ioaccel2(), just get it out of h->dev[] where we already have it cached. do not touch phys_disk[] for ioaccel enabled logical drives during rescan Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/hpsa_cmd.h')
-rw-r--r--drivers/scsi/hpsa_cmd.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 3a621c74b76f..76d549964e84 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -240,6 +240,7 @@ struct ReportLUNdata {
struct ext_report_lun_entry {
u8 lunid[8];
+#define MASKED_DEVICE(x) ((x)[3] & 0xC0)
#define GET_BMIC_BUS(lunid) ((lunid)[7] & 0x3F)
#define GET_BMIC_LEVEL_TWO_TARGET(lunid) ((lunid)[6])
#define GET_BMIC_DRIVE_NUMBER(lunid) (((GET_BMIC_BUS((lunid)) - 1) << 8) + \
@@ -247,6 +248,8 @@ struct ext_report_lun_entry {
u8 wwid[8];
u8 device_type;
u8 device_flags;
+#define NON_DISK_PHYS_DEV(x) ((x)[17] & 0x01)
+#define PHYS_IOACCEL(x) ((x)[17] & 0x08)
u8 lun_count; /* multi-lun device, how many luns */
u8 redundant_paths;
u32 ioaccel_handle; /* ioaccel1 only uses lower 16 bits */