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1da177e4 LT |
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 | /* | |
6070d81e | 34 | * Definitions for the generic 5380 driver. |
1da177e4 | 35 | */ |
1da177e4 LT |
36 | |
37 | #define NCR5380_read(reg) inb(port + reg) | |
38 | #define NCR5380_write(reg, value) outb(value, port + reg) | |
39 | ||
acfc8cad FT |
40 | #define NCR5380_implementation_fields /* none */ |
41 | #define NCR5380_local_declare() unsigned int port | |
1da177e4 LT |
42 | #define NCR5380_setup(instance) port = instance->io_port |
43 | ||
44 | /* | |
45 | * Includes needed for NCR5380.[ch] (XXX: Move them to NCR5380.h) | |
46 | */ | |
47 | #include <linux/delay.h> | |
1da177e4 LT |
48 | |
49 | #include "NCR5380.h" | |
50 | #include "NCR5380.c" | |
51 | ||
52 | #define DMX3191D_DRIVER_NAME "dmx3191d" | |
53 | #define DMX3191D_REGION_LEN 8 | |
54 | ||
55 | ||
56 | static struct scsi_host_template dmx3191d_driver_template = { | |
57 | .proc_name = DMX3191D_DRIVER_NAME, | |
58 | .name = "Domex DMX3191D", | |
8c32513b | 59 | .info = NCR5380_info, |
1da177e4 LT |
60 | .queuecommand = NCR5380_queue_command, |
61 | .eh_abort_handler = NCR5380_abort, | |
62 | .eh_bus_reset_handler = NCR5380_bus_reset, | |
1da177e4 LT |
63 | .can_queue = 32, |
64 | .this_id = 7, | |
65 | .sg_tablesize = SG_ALL, | |
66 | .cmd_per_lun = 2, | |
67 | .use_clustering = DISABLE_CLUSTERING, | |
68 | }; | |
69 | ||
6f039790 GKH |
70 | static int dmx3191d_probe_one(struct pci_dev *pdev, |
71 | const struct pci_device_id *id) | |
1da177e4 LT |
72 | { |
73 | struct Scsi_Host *shost; | |
74 | unsigned long io; | |
75 | int error = -ENODEV; | |
76 | ||
77 | if (pci_enable_device(pdev)) | |
78 | goto out; | |
79 | ||
80 | io = pci_resource_start(pdev, 0); | |
81 | if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { | |
82 | printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n", | |
83 | io, io + DMX3191D_REGION_LEN); | |
84 | goto out_disable_device; | |
85 | } | |
86 | ||
87 | shost = scsi_host_alloc(&dmx3191d_driver_template, | |
88 | sizeof(struct NCR5380_hostdata)); | |
89 | if (!shost) | |
90 | goto out_release_region; | |
91 | shost->io_port = io; | |
92 | shost->irq = pdev->irq; | |
93 | ||
94 | NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); | |
95 | ||
1d6f359a | 96 | if (request_irq(pdev->irq, NCR5380_intr, IRQF_SHARED, |
1da177e4 LT |
97 | DMX3191D_DRIVER_NAME, shost)) { |
98 | /* | |
99 | * Steam powered scsi controllers run without an IRQ anyway | |
100 | */ | |
101 | printk(KERN_WARNING "dmx3191: IRQ %d not available - " | |
102 | "switching to polled mode.\n", pdev->irq); | |
22f5f10d | 103 | shost->irq = NO_IRQ; |
1da177e4 LT |
104 | } |
105 | ||
106 | pci_set_drvdata(pdev, shost); | |
107 | ||
108 | error = scsi_add_host(shost, &pdev->dev); | |
109 | if (error) | |
110 | goto out_free_irq; | |
111 | ||
112 | scsi_scan_host(shost); | |
113 | return 0; | |
114 | ||
115 | out_free_irq: | |
22f5f10d FT |
116 | if (shost->irq != NO_IRQ) |
117 | free_irq(shost->irq, shost); | |
1da177e4 | 118 | out_release_region: |
c3c026ba | 119 | release_region(io, DMX3191D_REGION_LEN); |
1da177e4 LT |
120 | out_disable_device: |
121 | pci_disable_device(pdev); | |
122 | out: | |
123 | return error; | |
124 | } | |
125 | ||
6f039790 | 126 | static void dmx3191d_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
127 | { |
128 | struct Scsi_Host *shost = pci_get_drvdata(pdev); | |
129 | ||
130 | scsi_remove_host(shost); | |
131 | ||
132 | NCR5380_exit(shost); | |
133 | ||
22f5f10d | 134 | if (shost->irq != NO_IRQ) |
1da177e4 LT |
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, | |
6f039790 | 153 | .remove = dmx3191d_remove_one, |
1da177e4 LT |
154 | }; |
155 | ||
156 | static int __init dmx3191d_init(void) | |
157 | { | |
dcbccbde | 158 | return pci_register_driver(&dmx3191d_pci_driver); |
1da177e4 LT |
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"); |