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1 | /* |
2 | dmx3191d.c - driver for the Domex DMX3191D SCSI card. |
3 | Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it> |
4 | Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de> |
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 <linux/init.h> |
24 | #include <linux/ioport.h> |
25 | #include <linux/kernel.h> |
26 | #include <linux/module.h> |
27 | #include <linux/pci.h> |
28 | #include <linux/interrupt.h> |
29 | #include <asm/io.h> |
30 | |
31 | #include <scsi/scsi_host.h> |
32 | |
33 | /* |
34 | * Definitions for the generic 5380 driver. |
35 | */ |
36 | #define AUTOSENSE |
37 | |
38 | #define NCR5380_read(reg) inb(port + reg) |
39 | #define NCR5380_write(reg, value) outb(value, port + reg) |
40 | |
41 | #define NCR5380_implementation_fields unsigned int port |
42 | #define NCR5380_local_declare() NCR5380_implementation_fields |
43 | #define NCR5380_setup(instance) port = instance->io_port |
44 | |
45 | /* |
46 | * Includes needed for NCR5380.[ch] (XXX: Move them to NCR5380.h) |
47 | */ |
48 | #include <linux/delay.h> |
49 | #include "scsi.h" |
50 | |
51 | #include "NCR5380.h" |
52 | #include "NCR5380.c" |
53 | |
54 | #define DMX3191D_DRIVER_NAME "dmx3191d" |
55 | #define DMX3191D_REGION_LEN 8 |
56 | |
57 | |
58 | static struct scsi_host_template dmx3191d_driver_template = { |
59 | .proc_name = DMX3191D_DRIVER_NAME, |
60 | .name = "Domex DMX3191D", |
61 | .queuecommand = NCR5380_queue_command, |
62 | .eh_abort_handler = NCR5380_abort, |
63 | .eh_bus_reset_handler = NCR5380_bus_reset, |
64 | .can_queue = 32, |
65 | .this_id = 7, |
66 | .sg_tablesize = SG_ALL, |
67 | .cmd_per_lun = 2, |
68 | .use_clustering = DISABLE_CLUSTERING, |
69 | }; |
70 | |
71 | static int dmx3191d_probe_one(struct pci_dev *pdev, |
72 | const struct pci_device_id *id) |
73 | { |
74 | struct Scsi_Host *shost; |
75 | unsigned long io; |
76 | int error = -ENODEV; |
77 | |
78 | if (pci_enable_device(pdev)) |
79 | goto out; |
80 | |
81 | io = pci_resource_start(pdev, 0); |
82 | if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { |
83 | printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n", |
84 | io, io + DMX3191D_REGION_LEN); |
85 | goto out_disable_device; |
86 | } |
87 | |
88 | shost = scsi_host_alloc(&dmx3191d_driver_template, |
89 | sizeof(struct NCR5380_hostdata)); |
90 | if (!shost) |
91 | goto out_release_region; |
92 | shost->io_port = io; |
93 | shost->irq = pdev->irq; |
94 | |
95 | NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); |
96 | |
97 | if (request_irq(pdev->irq, NCR5380_intr, IRQF_SHARED, |
98 | DMX3191D_DRIVER_NAME, shost)) { |
99 | /* |
100 | * Steam powered scsi controllers run without an IRQ anyway |
101 | */ |
102 | printk(KERN_WARNING "dmx3191: IRQ %d not available - " |
103 | "switching to polled mode.\n", pdev->irq); |
104 | shost->irq = SCSI_IRQ_NONE; |
105 | } |
106 | |
107 | pci_set_drvdata(pdev, shost); |
108 | |
109 | error = scsi_add_host(shost, &pdev->dev); |
110 | if (error) |
111 | goto out_free_irq; |
112 | |
113 | scsi_scan_host(shost); |
114 | return 0; |
115 | |
116 | out_free_irq: |
117 | free_irq(shost->irq, shost); |
118 | out_release_region: |
119 | release_region(io, DMX3191D_REGION_LEN); |
120 | out_disable_device: |
121 | pci_disable_device(pdev); |
122 | out: |
123 | return error; |
124 | } |
125 | |
126 | static void dmx3191d_remove_one(struct pci_dev *pdev) |
127 | { |
128 | struct Scsi_Host *shost = pci_get_drvdata(pdev); |
129 | |
130 | scsi_remove_host(shost); |
131 | |
132 | NCR5380_exit(shost); |
133 | |
134 | if (shost->irq != SCSI_IRQ_NONE) |
135 | free_irq(shost->irq, shost); |
136 | release_region(shost->io_port, DMX3191D_REGION_LEN); |
137 | pci_disable_device(pdev); |
138 | |
139 | scsi_host_put(shost); |
140 | } |
141 | |
142 | static struct pci_device_id dmx3191d_pci_tbl[] = { |
143 | {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, |
144 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, |
145 | { } |
146 | }; |
147 | MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); |
148 | |
149 | static struct pci_driver dmx3191d_pci_driver = { |
150 | .name = DMX3191D_DRIVER_NAME, |
151 | .id_table = dmx3191d_pci_tbl, |
152 | .probe = dmx3191d_probe_one, |
153 | .remove = dmx3191d_remove_one, |
154 | }; |
155 | |
156 | static int __init dmx3191d_init(void) |
157 | { |
158 | return pci_register_driver(&dmx3191d_pci_driver); |
159 | } |
160 | |
161 | static void __exit dmx3191d_exit(void) |
162 | { |
163 | pci_unregister_driver(&dmx3191d_pci_driver); |
164 | } |
165 | |
166 | module_init(dmx3191d_init); |
167 | module_exit(dmx3191d_exit); |
168 | |
169 | MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>"); |
170 | MODULE_DESCRIPTION("Domex DMX3191D SCSI driver"); |
171 | MODULE_LICENSE("GPL"); |
172 |
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