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Diffstat (limited to 'linux/src/drivers/scsi/qlogicisp.h')
| -rw-r--r-- | linux/src/drivers/scsi/qlogicisp.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/linux/src/drivers/scsi/qlogicisp.h b/linux/src/drivers/scsi/qlogicisp.h new file mode 100644 index 0000000..e5da4a2 --- /dev/null +++ b/linux/src/drivers/scsi/qlogicisp.h @@ -0,0 +1,99 @@ +/* + * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI) + * Written by Erik H. Moe, ehm@cris.com + * Copyright 1995, Erik H. Moe + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +/* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */ + +/* + * $Date: 1999/04/26 05:54:53 $ + * $Revision: 1.1 $ + * + * $Log: isp1020.h,v $ + * Revision 0.5 1995/09/22 02:32:56 root + * do auto request sense + * + * Revision 0.4 1995/08/07 04:48:28 root + * supply firmware with driver. + * numerous bug fixes/general cleanup of code. + * + * Revision 0.3 1995/07/16 16:17:16 root + * added reset/abort code. + * + * Revision 0.2 1995/06/29 03:19:43 root + * fixed biosparam. + * added queue protocol. + * + * Revision 0.1 1995/06/25 01:56:13 root + * Initial release. + * + */ + +#ifndef _QLOGICISP_H +#define _QLOGICISP_H + +/* + * With the qlogic interface, every queue slot can hold a SCSI + * command with up to 4 scatter/gather entries. If we need more + * than 4 entries, continuation entries can be used that hold + * another 7 entries each. Unlike for other drivers, this means + * that the maximum number of scatter/gather entries we can + * support at any given time is a function of the number of queue + * slots available. That is, host->can_queue and host->sg_tablesize + * are dynamic and _not_ independent. This all works fine because + * requests are queued serially and the scatter/gather limit is + * determined for each queue request anew. + */ +#define QLOGICISP_REQ_QUEUE_LEN 63 /* must be power of two - 1 */ +#define QLOGICISP_MAX_SG(ql) (4 + ((ql) > 0) ? 7*((ql) - 1) : 0) + +int isp1020_detect(Scsi_Host_Template *); +int isp1020_release(struct Scsi_Host *); +const char * isp1020_info(struct Scsi_Host *); +int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *)); +int isp1020_abort(Scsi_Cmnd *); +int isp1020_reset(Scsi_Cmnd *, unsigned int); +int isp1020_biosparam(Disk *, kdev_t, int[]); + +#ifndef NULL +#define NULL (0) +#endif + +extern struct proc_dir_entry proc_scsi_isp1020; + +#define QLOGICISP { \ + /* next */ NULL, \ + /* usage_count */ NULL, \ + /* proc dir */ NULL, \ + /* procfs info */ NULL, \ + /* name */ NULL, \ + /* detect */ isp1020_detect, \ + /* release */ isp1020_release, \ + /* info */ isp1020_info, \ + /* command */ NULL, \ + /* queuecommand */ isp1020_queuecommand, \ + /* abort */ isp1020_abort, \ + /* reset */ isp1020_reset, \ + /* slave_attach */ NULL, \ + /* bios_param */ isp1020_biosparam, \ + /* can_queue */ QLOGICISP_REQ_QUEUE_LEN, \ + /* this_id */ -1, \ + /* sg_tablesize */ QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \ + /* cmd_per_lun */ 1, \ + /* present */ 0, \ + /* unchecked_isa_dma */ 0, \ + /* use_clustering */ DISABLE_CLUSTERING \ +} + +#endif /* _QLOGICISP_H */ |