qla4xxx driver third attempt

This is the second resubmission of the qla4xxx driver for QLogic Corporation's iSCSI HBAs.

Changes from the first submission are:

- fixed driver initialization issues during insmod
- removed all references to iSNS
- changed comments for functions to doc style
- fixed ql4xxx_sem_spinlock() and ql4xxx_lock_drvr_wait() and their calls.
- removed unused functions qla4xxx_login_device(), qla4xxx_logout_device() and qla4xxx_delete_device()
- moved definitions of functions used only in ql4_os.c to before they are called and declared them static if not already so. Removed their prototypes.
- prefixed function del_from_active_array() with qla4xxx
- removed ql4_printk and used the appropriate dev_xxxx functions instead.
- used scsi_print_command() instead of private definition.

The complete mega patch for the driver is at ftp://ftp.qlogic.com/outgoing/linux/iSCSI/upstream/5.00.05b9-k/0000-Initial-Commit-qla4xxx.txt

For ease of comprehension the above patch has been broken down into the following smaller patches:
(located at ftp://ftp.qlogic.com/outgoing/linux/iSCSI/upstream/5.00.05b9-k/ )

0001-qla4xxx-driver-definitions.diff
0002-qla4xxx-driver-initialization.diff
0003-qla4xxx-driver-os-files.diff
0004-qla4xxx-driver-isr-functions.diff
0005-qla4xxx-driver-mbx-functions.diff
0006-qla4xxx-driver-support-functions.diff
0007-qla4xxx-driver-version.diff

All patches are against scsi-misc-2.6.git

Other items which needs to be done are
- Add support for sysfs attributes.
- Userspace support for session creation/deletion for iscsi HBAs.
- Add support for other discovery modes ie iSNS/SLP.
- block layer tagging

Patches for these would be submitted once the driver is merged upstream.

We have gone through several iterations of the driver submissions thus far. I would appreciate if it can be merged upstream. Otherwise please let me know what needs to be done to ensure a merge.

Regards,
David Somayajulu
Qlogic Corporation.

P.S:Here is the link to the first submission for reference.
http://groups.google.com/group/open-iscsi/browse_frm/thread/536ce2edf9a60c48?hl=en