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| author | Manish Rangankar <manish.rangankar@qlogic.com> | 2011-07-25 22:48:55 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-08-27 18:36:27 +0400 |
| commit | 2a991c2159782b8d318ac9f88a36c22dda3e7185 (patch) | |
| tree | 963cc3bec9517038458ad7e71b9a5d45ede4d360 /drivers/scsi/qla4xxx/ql4_nvram.c | |
| parent | 0e7e85019c2709131b10c5f34b602cc6b94fe782 (diff) | |
| download | linux-2a991c2159782b8d318ac9f88a36c22dda3e7185.tar.xz | |
[SCSI] qla4xxx: Boot from SAN support for open-iscsi
Hook qla4xxx in fw boot sysfs interface so iscsi tools
can use the info to create boot sessions.
Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_nvram.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_nvram.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_nvram.c b/drivers/scsi/qla4xxx/ql4_nvram.c index b4b859b2d47e..7851f314ba96 100644 --- a/drivers/scsi/qla4xxx/ql4_nvram.c +++ b/drivers/scsi/qla4xxx/ql4_nvram.c @@ -156,6 +156,27 @@ u16 rd_nvram_word(struct scsi_qla_host * ha, int offset) return val; } +u8 rd_nvram_byte(struct scsi_qla_host *ha, int offset) +{ + u16 val = 0; + u8 rval = 0; + int index = 0; + + if (offset & 0x1) + index = (offset - 1) / 2; + else + index = offset / 2; + + val = le16_to_cpu(rd_nvram_word(ha, index)); + + if (offset & 0x1) + rval = (u8)((val & 0xff00) >> 8); + else + rval = (u8)((val & 0x00ff)); + + return rval; +} + int qla4xxx_is_nvram_configuration_valid(struct scsi_qla_host * ha) { int status = QLA_ERROR; |