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/blk.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/version.h>
34 
35 #include "scsi.h"
36 #include "hosts.h"
37 #include "constants.h"
38 #include "sd.h"
39 
40 #include "dmx3191d.h"
41 
42 /* play with these values to tune up your system performances */
43 /* default setting from g_NCR5380.c */
44 /*
45 #define USLEEP
46 #define USLEEP_POLL		1
47 #define USLEEP_SLEEP		20
48 #define USLEEP_WAITLONG		500
49 */
50 
51 #define AUTOSENSE
52 #include "NCR5380.h"
53 #include "NCR5380.c"
54 
55 
dmx3191d_detect(Scsi_Host_Template * tmpl)56 int __init dmx3191d_detect(Scsi_Host_Template *tmpl) {
57 	int boards = 0;
58 	struct Scsi_Host *instance = NULL;
59 	struct pci_dev *pdev = NULL;
60 
61 	if (!pci_present()) {
62 		printk(KERN_WARNING "dmx3191: PCI support not enabled\n");
63 		return 0;
64 	}
65 
66 	tmpl->proc_name = DMX3191D_DRIVER_NAME;
67 
68 	while ((pdev = pci_find_device(PCI_VENDOR_ID_DOMEX,
69 			PCI_DEVICE_ID_DOMEX_DMX3191D, pdev))) {
70 
71 		unsigned long port;
72 		if (pci_enable_device(pdev))
73 			continue;
74 
75 		port = pci_resource_start (pdev, 0);
76 
77 		if (!request_region(port, DMX3191D_REGION, DMX3191D_DRIVER_NAME)) {
78 			printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
79 				port, port + DMX3191D_REGION);
80 			continue;
81 		}
82 
83 		instance = scsi_register(tmpl, sizeof(struct NCR5380_hostdata));
84 		if(instance == NULL)
85 		{
86 			release_region(port, DMX3191D_REGION);
87 			continue;
88 		}
89 		scsi_set_pci_device(instance, pdev);
90 		instance->io_port = port;
91 		instance->irq = pdev->irq;
92 		NCR5380_init(instance, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E);
93 
94 		if (request_irq(pdev->irq, dmx3191d_do_intr, SA_SHIRQ,
95 				DMX3191D_DRIVER_NAME, instance)) {
96 			printk(KERN_WARNING "dmx3191: IRQ %d not available - switching to polled mode.\n", pdev->irq);
97 			/* Steam powered scsi controllers run without an IRQ
98 			   anyway */
99 			instance->irq = SCSI_IRQ_NONE;
100 		}
101 
102 		boards++;
103 	}
104 	return boards;
105 }
106 
dmx3191d_info(struct Scsi_Host * host)107 const char * dmx3191d_info(struct Scsi_Host *host) {
108 	static const char *info ="Domex DMX3191D";
109 
110 	return info;
111 }
112 
dmx3191d_release_resources(struct Scsi_Host * instance)113 int dmx3191d_release_resources(struct Scsi_Host *instance)
114 {
115 	release_region(instance->io_port, DMX3191D_REGION);
116 	if(instance->irq != SCSI_IRQ_NONE)
117 		free_irq(instance->irq, instance);
118 
119 	return 0;
120 }
121 
122 MODULE_LICENSE("GPL");
123 
124 static Scsi_Host_Template driver_template = DMX3191D;
125 #include "scsi_module.c"
126 
127