diff options
| author | Matt Gates <matthew.gates@hp.com> | 2014-02-18 13:55:07 -0600 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-15 10:19:01 -0700 |
| commit | a93aa1fe00a461690f0d0a9ed236b646056d1223 (patch) | |
| tree | 52027d37a847cc0e6bef151bd0b839cf0542d71a /drivers/scsi/hpsa.c | |
| parent | 2b01d816f5f884d5ea16ab2498736b1221bc027c (diff) | |
[SCSI] hpsa: use extended report luns command for HP SSD SmartPath
There is an extended report luns command which contains
additional information about physical devices. In particular
we need to get the physical device handle so we can use an
alternate i/o path for fast physical devices like SSDs so
we can speed up certain i/o's by bypassing the RAID stack
code in the controller firmware.
Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 40989eea8f97..eed5f03206d1 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1888,11 +1888,12 @@ static int hpsa_gather_lun_info(struct ctlr_info *h, struct ReportLUNdata *physdev, u32 *nphysicals, struct ReportLUNdata *logdev, u32 *nlogicals) { - if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, 0)) { + if (hpsa_scsi_do_report_phys_luns(h, physdev, reportlunsize, + HPSA_REPORT_PHYS_EXTENDED)) { dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); return -1; } - *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8; + *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24; if (*nphysicals > HPSA_MAX_PHYS_LUN) { dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded." " %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN, @@ -1923,7 +1924,8 @@ static int hpsa_gather_lun_info(struct ctlr_info *h, } u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, int i, - int nphysicals, int nlogicals, struct ReportLUNdata *physdev_list, + int nphysicals, int nlogicals, + struct ReportExtendedLUNdata *physdev_list, struct ReportLUNdata *logdev_list) { /* Helper function, figure out where the LUN ID info is coming from @@ -1959,7 +1961,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) * tell which devices we already know about, vs. new * devices, vs. disappearing devices. */ - struct ReportLUNdata *physdev_list = NULL; + struct ReportExtendedLUNdata *physdev_list = NULL; struct ReportLUNdata *logdev_list = NULL; u32 nphysicals = 0; u32 nlogicals = 0; @@ -1982,7 +1984,8 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) } memset(lunzerobits, 0, sizeof(lunzerobits)); - if (hpsa_gather_lun_info(h, reportlunsize, physdev_list, &nphysicals, + if (hpsa_gather_lun_info(h, reportlunsize, + (struct ReportLUNdata *) physdev_list, &nphysicals, logdev_list, &nlogicals)) goto out; |