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79 lines
3.0 KiB
79 lines
3.0 KiB
/* |
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* Disk Array driver for HP Smart Array controllers, SCSI Tape module. |
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* (C) Copyright 2001, 2007 Hewlett-Packard Development Company, L.P. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 300, Boston, MA |
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* 02111-1307, USA. |
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* |
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* Questions/Comments/Bugfixes to iss_storagedev@hp.com |
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* |
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*/ |
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#ifdef CONFIG_CISS_SCSI_TAPE |
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#ifndef _CCISS_SCSI_H_ |
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#define _CCISS_SCSI_H_ |
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#include <scsi/scsicam.h> /* possibly irrelevant, since we don't show disks */ |
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/* the scsi id of the adapter... */ |
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#define SELF_SCSI_ID 15 |
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/* 15 is somewhat arbitrary, since the scsi-2 bus |
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that's presented by the driver to the OS is |
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fabricated. The "real" scsi-3 bus the |
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hardware presents is fabricated too. |
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The actual, honest-to-goodness physical |
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bus that the devices are attached to is not |
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addressible natively, and may in fact turn |
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out to be not scsi at all. */ |
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/* |
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If the upper scsi layer tries to track how many commands we have |
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outstanding, it will be operating under the misapprehension that it is |
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the only one sending us requests. We also have the block interface, |
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which is where most requests must surely come from, so the upper layer's |
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notion of how many requests we have outstanding will be wrong most or |
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all of the time. |
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Note, the normal SCSI mid-layer error handling doesn't work well |
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for this driver because 1) it takes the io_request_lock before |
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calling error handlers and uses a local variable to store flags, |
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so the io_request_lock cannot be released and interrupts enabled |
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inside the error handlers, and, the error handlers cannot poll |
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for command completion because they might get commands from the |
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block half of the driver completing, and not know what to do |
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with them. That's what we get for making a hybrid scsi/block |
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driver, I suppose. |
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*/ |
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struct cciss_scsi_dev_t { |
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int devtype; |
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int bus, target, lun; /* as presented to the OS */ |
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unsigned char scsi3addr[8]; /* as presented to the HW */ |
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unsigned char device_id[16]; /* from inquiry pg. 0x83 */ |
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unsigned char vendor[8]; /* bytes 8-15 of inquiry data */ |
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unsigned char model[16]; /* bytes 16-31 of inquiry data */ |
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unsigned char revision[4]; /* bytes 32-35 of inquiry data */ |
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}; |
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struct cciss_scsi_hba_t { |
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char *name; |
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int ndevices; |
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#define CCISS_MAX_SCSI_DEVS_PER_HBA 16 |
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struct cciss_scsi_dev_t dev[CCISS_MAX_SCSI_DEVS_PER_HBA]; |
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}; |
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#endif /* _CCISS_SCSI_H_ */ |
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#endif /* CONFIG_CISS_SCSI_TAPE */
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