1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | dmx3191d.c - driver for the Domex DMX3191D SCSI card. |
4 | Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it> |
5 | Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de> |
6 | |
7 | Based on the generic NCR5380 driver by Drew Eckhardt et al. |
8 | |
9 | */ |
10 | |
11 | #include <linux/init.h> |
12 | #include <linux/ioport.h> |
13 | #include <linux/kernel.h> |
14 | #include <linux/module.h> |
15 | #include <linux/pci.h> |
16 | #include <linux/interrupt.h> |
17 | #include <asm/io.h> |
18 | |
19 | #include <scsi/scsi_host.h> |
20 | |
21 | /* |
22 | * Definitions for the generic 5380 driver. |
23 | */ |
24 | |
25 | #define NCR5380_read(reg) inb(hostdata->base + (reg)) |
26 | #define NCR5380_write(reg, value) outb(value, hostdata->base + (reg)) |
27 | |
28 | #define NCR5380_dma_xfer_len NCR5380_dma_xfer_none |
29 | #define NCR5380_dma_recv_setup NCR5380_dma_setup_none |
30 | #define NCR5380_dma_send_setup NCR5380_dma_setup_none |
31 | #define NCR5380_dma_residual NCR5380_dma_residual_none |
32 | |
33 | #define NCR5380_implementation_fields /* none */ |
34 | |
35 | #include "NCR5380.h" |
36 | #include "NCR5380.c" |
37 | |
38 | #define DMX3191D_DRIVER_NAME "dmx3191d" |
39 | #define DMX3191D_REGION_LEN 8 |
40 | |
41 | |
42 | static const struct scsi_host_template dmx3191d_driver_template = { |
43 | .module = THIS_MODULE, |
44 | .proc_name = DMX3191D_DRIVER_NAME, |
45 | .name = "Domex DMX3191D" , |
46 | .info = NCR5380_info, |
47 | .queuecommand = NCR5380_queue_command, |
48 | .eh_abort_handler = NCR5380_abort, |
49 | .eh_host_reset_handler = NCR5380_host_reset, |
50 | .can_queue = 32, |
51 | .this_id = 7, |
52 | .sg_tablesize = SG_ALL, |
53 | .cmd_per_lun = 2, |
54 | .dma_boundary = PAGE_SIZE - 1, |
55 | .cmd_size = sizeof(struct NCR5380_cmd), |
56 | }; |
57 | |
58 | static int dmx3191d_probe_one(struct pci_dev *pdev, |
59 | const struct pci_device_id *id) |
60 | { |
61 | struct Scsi_Host *shost; |
62 | struct NCR5380_hostdata *hostdata; |
63 | unsigned long io; |
64 | int error = -ENODEV; |
65 | |
66 | if (pci_enable_device(dev: pdev)) |
67 | goto out; |
68 | |
69 | io = pci_resource_start(pdev, 0); |
70 | if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { |
71 | printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n" , |
72 | io, io + DMX3191D_REGION_LEN); |
73 | goto out_disable_device; |
74 | } |
75 | |
76 | shost = scsi_host_alloc(&dmx3191d_driver_template, |
77 | sizeof(struct NCR5380_hostdata)); |
78 | if (!shost) |
79 | goto out_release_region; |
80 | |
81 | hostdata = shost_priv(shost); |
82 | hostdata->base = io; |
83 | |
84 | /* This card does not seem to raise an interrupt on pdev->irq. |
85 | * Steam-powered SCSI controllers run without an IRQ anyway. |
86 | */ |
87 | shost->irq = NO_IRQ; |
88 | |
89 | error = NCR5380_init(instance: shost, flags: 0); |
90 | if (error) |
91 | goto out_host_put; |
92 | |
93 | NCR5380_maybe_reset_bus(instance: shost); |
94 | |
95 | pci_set_drvdata(pdev, data: shost); |
96 | |
97 | error = scsi_add_host(host: shost, dev: &pdev->dev); |
98 | if (error) |
99 | goto out_exit; |
100 | |
101 | scsi_scan_host(shost); |
102 | return 0; |
103 | |
104 | out_exit: |
105 | NCR5380_exit(instance: shost); |
106 | out_host_put: |
107 | scsi_host_put(t: shost); |
108 | out_release_region: |
109 | release_region(io, DMX3191D_REGION_LEN); |
110 | out_disable_device: |
111 | pci_disable_device(dev: pdev); |
112 | out: |
113 | return error; |
114 | } |
115 | |
116 | static void dmx3191d_remove_one(struct pci_dev *pdev) |
117 | { |
118 | struct Scsi_Host *shost = pci_get_drvdata(pdev); |
119 | struct NCR5380_hostdata *hostdata = shost_priv(shost); |
120 | unsigned long io = hostdata->base; |
121 | |
122 | scsi_remove_host(shost); |
123 | |
124 | NCR5380_exit(instance: shost); |
125 | scsi_host_put(t: shost); |
126 | release_region(io, DMX3191D_REGION_LEN); |
127 | pci_disable_device(dev: pdev); |
128 | } |
129 | |
130 | static struct pci_device_id dmx3191d_pci_tbl[] = { |
131 | {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, |
132 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, |
133 | { } |
134 | }; |
135 | MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); |
136 | |
137 | static struct pci_driver dmx3191d_pci_driver = { |
138 | .name = DMX3191D_DRIVER_NAME, |
139 | .id_table = dmx3191d_pci_tbl, |
140 | .probe = dmx3191d_probe_one, |
141 | .remove = dmx3191d_remove_one, |
142 | }; |
143 | |
144 | module_pci_driver(dmx3191d_pci_driver); |
145 | |
146 | MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>" ); |
147 | MODULE_DESCRIPTION("Domex DMX3191D SCSI driver" ); |
148 | MODULE_LICENSE("GPL" ); |
149 | |