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Annotation of Gnu-Mach/linux/src/drivers/scsi/qlogicisp.h, revision 1.1.1.2

1.1       root        1: /*
                      2:  * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI)
                      3:  * Written by Erik H. Moe, [email protected]
                      4:  * Copyright 1995, Erik H. Moe
                      5:  *
                      6:  * This program is free software; you can redistribute it and/or modify it
                      7:  * under the terms of the GNU General Public License as published by the
                      8:  * Free Software Foundation; either version 2, or (at your option) any
                      9:  * later version.
                     10:  *
                     11:  * This program is distributed in the hope that it will be useful, but
                     12:  * WITHOUT ANY WARRANTY; without even the implied warranty of
                     13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     14:  * General Public License for more details.
                     15:  */
                     16: 
                     17: /* Renamed and updated to 1.3.x by Michael Griffith <[email protected]> */
                     18: 
                     19: /*
1.1.1.2 ! root       20:  * $Date: 2007/03/27 21:04:30 $
        !            21:  * $Revision: 1.1.4.2 $
1.1       root       22:  *
                     23:  * Revision 0.5  1995/09/22  02:32:56  root
                     24:  * do auto request sense
                     25:  *
                     26:  * Revision 0.4  1995/08/07  04:48:28  root
                     27:  * supply firmware with driver.
                     28:  * numerous bug fixes/general cleanup of code.
                     29:  *
                     30:  * Revision 0.3  1995/07/16  16:17:16  root
                     31:  * added reset/abort code.
                     32:  *
                     33:  * Revision 0.2  1995/06/29  03:19:43  root
                     34:  * fixed biosparam.
                     35:  * added queue protocol.
                     36:  *
                     37:  * Revision 0.1  1995/06/25  01:56:13  root
                     38:  * Initial release.
                     39:  *
                     40:  */
                     41: 
                     42: #ifndef _QLOGICISP_H
                     43: #define _QLOGICISP_H
                     44: 
                     45: /*
                     46:  * With the qlogic interface, every queue slot can hold a SCSI
                     47:  * command with up to 4 scatter/gather entries.  If we need more
                     48:  * than 4 entries, continuation entries can be used that hold
                     49:  * another 7 entries each.  Unlike for other drivers, this means
                     50:  * that the maximum number of scatter/gather entries we can
                     51:  * support at any given time is a function of the number of queue
                     52:  * slots available.  That is, host->can_queue and host->sg_tablesize
                     53:  * are dynamic and _not_ independent.  This all works fine because
                     54:  * requests are queued serially and the scatter/gather limit is
                     55:  * determined for each queue request anew.
                     56:  */
                     57: #define QLOGICISP_REQ_QUEUE_LEN        63      /* must be power of two - 1 */
                     58: #define QLOGICISP_MAX_SG(ql)   (4 + ((ql) > 0) ? 7*((ql) - 1) : 0)
                     59: 
                     60: int isp1020_detect(Scsi_Host_Template *);
                     61: int isp1020_release(struct Scsi_Host *);
                     62: const char * isp1020_info(struct Scsi_Host *);
                     63: int isp1020_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
                     64: int isp1020_abort(Scsi_Cmnd *);
                     65: int isp1020_reset(Scsi_Cmnd *, unsigned int);
                     66: int isp1020_biosparam(Disk *, kdev_t, int[]);
                     67: 
                     68: #ifndef NULL
                     69: #define NULL (0)
                     70: #endif
                     71: 
1.1.1.2 ! root       72: static struct proc_dir_entry proc_scsi_isp1020;
1.1       root       73: 
                     74: #define QLOGICISP {                                                       \
                     75:        /* next */              NULL,                                      \
                     76:        /* usage_count */       NULL,                                      \
                     77:        /* proc dir */          NULL,                                      \
                     78:        /* procfs info */       NULL,                                      \
                     79:        /* name */              NULL,                                      \
                     80:        /* detect */            isp1020_detect,                            \
                     81:        /* release */           isp1020_release,                           \
                     82:        /* info */              isp1020_info,                              \
                     83:        /* command */           NULL,                                      \
                     84:        /* queuecommand */      isp1020_queuecommand,                      \
                     85:        /* abort */             isp1020_abort,                             \
                     86:        /* reset */             isp1020_reset,                             \
                     87:        /* slave_attach */      NULL,                                      \
                     88:        /* bios_param */        isp1020_biosparam,                         \
                     89:        /* can_queue */         QLOGICISP_REQ_QUEUE_LEN,                   \
                     90:        /* this_id */           -1,                                        \
                     91:        /* sg_tablesize */      QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), \
                     92:        /* cmd_per_lun */       1,                                         \
                     93:        /* present */           0,                                         \
                     94:        /* unchecked_isa_dma */ 0,                                         \
                     95:        /* use_clustering */    DISABLE_CLUSTERING                         \
                     96: }
                     97: 
                     98: #endif /* _QLOGICISP_H */

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