drivers/scsi/dmx3191d.c

   1
   2 /*
   3     dmx3191d.c - midlevel driver for the Domex DMX3191D SCSI card.
   4     Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
   5
   6     Based on the generic NCR5380 driver by Drew Eckhardt et al.
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include <asm/io.h>
  24 #include <asm/system.h>
  25 #include <linux/blkdev.h>
  26 #include <linux/init.h>
  27 #include <linux/ioport.h>
  28 #include <linux/module.h>
  29 #include <linux/pci.h>
  30 #include <linux/sched.h>
  31 #include <linux/signal.h>
  32 #include <linux/stat.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/delay.h>
  35
  36 #include "scsi.h"
  37 #include "hosts.h"
  38
  39 #include "dmx3191d.h"
  40
  41 /* play with these values to tune up your system performances */
  42 /* default setting from g_NCR5380.c */
  43 /*
  44 #define USLEEP
  45 #define USLEEP_POLL             1
  46 #define USLEEP_SLEEP            20
  47 #define USLEEP_WAITLONG         500
  48 */
  49
  50 #define AUTOSENSE
  51 #include "NCR5380.h"
  52 #include "NCR5380.c"
  53
  54
  55 static int __init dmx3191d_detect(Scsi_Host_Template *tmpl) {
  56         int boards = 0;
  57         struct Scsi_Host *instance = NULL;
  58         struct pci_dev *pdev = NULL;
  59
  60         tmpl->proc_name = DMX3191D_DRIVER_NAME;
  61
  62         while ((pdev = pci_find_device(PCI_VENDOR_ID_DOMEX,
  63                         PCI_DEVICE_ID_DOMEX_DMX3191D, pdev))) {
  64
  65                 unsigned long port;
  66                 if (pci_enable_device(pdev))
  67                         continue;
  68
  69                 port = pci_resource_start (pdev, 0);
  70
  71                 if (!request_region(port, DMX3191D_REGION, DMX3191D_DRIVER_NAME)) {
  72                         printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
  73                                 port, port + DMX3191D_REGION);
  74                         continue;
  75                 }
  76
  77                 instance = scsi_register(tmpl, sizeof(struct NCR5380_hostdata));
  78                 if(instance == NULL)
  79                 {
  80                         release_region(port, DMX3191D_REGION);
  81                         continue;
  82                 }
  83                 scsi_set_device(instance, &pdev->dev);
  84                 instance->io_port = port;
  85                 instance->irq = pdev->irq;
  86                 NCR5380_init(instance, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E);
  87
  88                 if (request_irq(pdev->irq, dmx3191d_intr, SA_SHIRQ,
  89                                 DMX3191D_DRIVER_NAME, instance)) {
  90                         printk(KERN_WARNING "dmx3191: IRQ %d not available - switching to polled mode.\n", pdev->irq);
  91                         /* Steam powered scsi controllers run without an IRQ
  92                            anyway */
  93                         instance->irq = SCSI_IRQ_NONE;
  94                 }
  95
  96                 boards++;
  97         }
  98         return boards;
  99 }
 100
 101 static const char * dmx3191d_info(struct Scsi_Host *host) {
 102         static const char *info ="Domex DMX3191D";
 103
 104         return info;
 105 }
 106
 107 static int dmx3191d_release_resources(struct Scsi_Host *instance)
 108 {
 109         release_region(instance->io_port, DMX3191D_REGION);
 110         if(instance->irq!=SCSI_IRQ_NONE)
 111                 free_irq(instance->irq, instance);
 112
 113         return 0;
 114 }
 115
 116 MODULE_LICENSE("GPL");
 117
 118 static Scsi_Host_Template driver_template = {
 119         .proc_info              = dmx3191d_proc_info,
 120         .name                   = "Domex DMX3191D",
 121         .detect                 = dmx3191d_detect,
 122         .release                = dmx3191d_release_resources,
 123         .info                   = dmx3191d_info,
 124         .queuecommand           = dmx3191d_queue_command,
 125         .eh_abort_handler       = dmx3191d_abort,
 126         .eh_bus_reset_handler   = dmx3191d_bus_reset,
 127         .eh_device_reset_handler = dmx3191d_device_reset,
 128         .eh_host_reset_handler  = dmx3191d_host_reset,
 129         .can_queue              = 32,
 130         .this_id                = 7,
 131         .sg_tablesize           = SG_ALL,
 132         .cmd_per_lun            = 2,
 133         .use_clustering         = DISABLE_CLUSTERING,
 134 };
 135 #include "scsi_module.c"
 136