drivers/scsi/ncr53c8xx.h

   1 /******************************************************************************
   2 **  Device driver for the PCI-SCSI NCR538XX controller family.
   3 **
   4 **  Copyright (C) 1994  Wolfgang Stanglmeier
   5 **
   6 **  This program is free software; you can redistribute it and/or modify
   7 **  it under the terms of the GNU General Public License as published by
   8 **  the Free Software Foundation; either version 2 of the License, or
   9 **  (at your option) any later version.
  10 **
  11 **  This program is distributed in the hope that it will be useful,
  12 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 **  GNU General Public License for more details.
  15 **
  16 **  You should have received a copy of the GNU General Public License
  17 **  along with this program; if not, write to the Free Software
  18 **  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 **
  20 **-----------------------------------------------------------------------------
  21 **
  22 **  This driver has been ported to Linux from the FreeBSD NCR53C8XX driver
  23 **  and is currently maintained by
  24 **
  25 **          Gerard Roudier              <groudier@free.fr>
  26 **
  27 **  Being given that this driver originates from the FreeBSD version, and
  28 **  in order to keep synergy on both, any suggested enhancements and corrections
  29 **  received on Linux are automatically a potential candidate for the FreeBSD
  30 **  version.
  31 **
  32 **  The original driver has been written for 386bsd and FreeBSD by
  33 **          Wolfgang Stanglmeier        <wolf@cologne.de>
  34 **          Stefan Esser                <se@mi.Uni-Koeln.de>
  35 **
  36 **  And has been ported to NetBSD by
  37 **          Charles M. Hannum           <mycroft@gnu.ai.mit.edu>
  38 **
  39 *******************************************************************************
  40 */
  41
  42 #ifndef NCR53C8XX_H
  43 #define NCR53C8XX_H
  44
  45 #include <scsi/scsi_host.h>
  46
  47 #include "sym53c8xx_defs.h"
  48
  49 /*
  50         Build a scatter/gather entry.
  51         see sym53c8xx_2/sym_hipd.h for more detailed sym_build_sge()
  52         implementation ;)
  53  */
  54
  55 #define ncr_build_sge(np, data, badd, len)      \
  56 do {                                            \
  57         (data)->addr = cpu_to_scr(badd);        \
  58         (data)->size = cpu_to_scr(len);         \
  59 } while (0)
  60
  61 /*==========================================================
  62 **
  63 **      Structures used by the detection routine to transmit
  64 **      device configuration to the attach function.
  65 **
  66 **==========================================================
  67 */
  68 struct ncr_slot {
  69         u_long  base;
  70         u_long  base_2;
  71         u_long  base_c;
  72         u_long  base_2_c;
  73         void __iomem *base_v;
  74         void __iomem *base_2_v;
  75         int     irq;
  76 /* port and reg fields to use INB, OUTB macros */
  77         volatile struct ncr_reg __iomem *reg;
  78 };
  79
  80 /*==========================================================
  81 **
  82 **      Structure used by detection routine to save data on
  83 **      each detected board for attach.
  84 **
  85 **==========================================================
  86 */
  87 struct ncr_device {
  88         struct device  *dev;
  89         struct ncr_slot  slot;
  90         struct ncr_chip  chip;
  91         u_char host_id;
  92         u8 differential;
  93 };
  94
  95 extern struct Scsi_Host *ncr_attach(struct scsi_host_template *tpnt, int unit, struct ncr_device *device);
  96 extern int ncr53c8xx_release(struct Scsi_Host *host);
  97 irqreturn_t ncr53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs);
  98 extern int ncr53c8xx_init(void);
  99 extern void ncr53c8xx_exit(void);
 100
 101 #endif /* NCR53C8XX_H */