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 37 #define DONT_USE_INTR 38 39 #define NCR5380_read(reg) inb(instance->io_port + reg) 40 #define NCR5380_write(reg, value) outb(value, instance->io_port + reg) 41 42 #define NCR5380_implementation_fields /* none */ 43 44 #include "NCR5380.h" 45 #include "NCR5380.c" 46 47 #define DMX3191D_DRIVER_NAME "dmx3191d" 48 #define DMX3191D_REGION_LEN 8 49 50 51 static struct scsi_host_template dmx3191d_driver_template = { 52 .module = THIS_MODULE, 53 .proc_name = DMX3191D_DRIVER_NAME, 54 .name = "Domex DMX3191D", 55 .info = NCR5380_info, 56 .queuecommand = NCR5380_queue_command, 57 .eh_abort_handler = NCR5380_abort, 58 .eh_bus_reset_handler = NCR5380_bus_reset, 59 .can_queue = 32, 60 .this_id = 7, 61 .sg_tablesize = SG_ALL, 62 .cmd_per_lun = 2, 63 .use_clustering = DISABLE_CLUSTERING, 64 .cmd_size = NCR5380_CMD_SIZE, 65 .max_sectors = 128, 66 }; 67 68 static int dmx3191d_probe_one(struct pci_dev *pdev, 69 const struct pci_device_id *id) 70 { 71 struct Scsi_Host *shost; 72 unsigned long io; 73 int error = -ENODEV; 74 75 if (pci_enable_device(pdev)) 76 goto out; 77 78 io = pci_resource_start(pdev, 0); 79 if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { 80 printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n", 81 io, io + DMX3191D_REGION_LEN); 82 goto out_disable_device; 83 } 84 85 shost = scsi_host_alloc(&dmx3191d_driver_template, 86 sizeof(struct NCR5380_hostdata)); 87 if (!shost) 88 goto out_release_region; 89 shost->io_port = io; 90 91 /* This card does not seem to raise an interrupt on pdev->irq. 92 * Steam-powered SCSI controllers run without an IRQ anyway. 93 */ 94 shost->irq = NO_IRQ; 95 96 error = NCR5380_init(shost, FLAG_NO_PSEUDO_DMA); 97 if (error) 98 goto out_host_put; 99 100 NCR5380_maybe_reset_bus(shost); 101 102 pci_set_drvdata(pdev, shost); 103 104 error = scsi_add_host(shost, &pdev->dev); 105 if (error) 106 goto out_exit; 107 108 scsi_scan_host(shost); 109 return 0; 110 111 out_exit: 112 NCR5380_exit(shost); 113 out_host_put: 114 scsi_host_put(shost); 115 out_release_region: 116 release_region(io, DMX3191D_REGION_LEN); 117 out_disable_device: 118 pci_disable_device(pdev); 119 out: 120 return error; 121 } 122 123 static void dmx3191d_remove_one(struct pci_dev *pdev) 124 { 125 struct Scsi_Host *shost = pci_get_drvdata(pdev); 126 unsigned long io = shost->io_port; 127 128 scsi_remove_host(shost); 129 130 NCR5380_exit(shost); 131 scsi_host_put(shost); 132 release_region(io, DMX3191D_REGION_LEN); 133 pci_disable_device(pdev); 134 } 135 136 static struct pci_device_id dmx3191d_pci_tbl[] = { 137 {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, 138 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, 139 { } 140 }; 141 MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); 142 143 static struct pci_driver dmx3191d_pci_driver = { 144 .name = DMX3191D_DRIVER_NAME, 145 .id_table = dmx3191d_pci_tbl, 146 .probe = dmx3191d_probe_one, 147 .remove = dmx3191d_remove_one, 148 }; 149 150 static int __init dmx3191d_init(void) 151 { 152 return pci_register_driver(&dmx3191d_pci_driver); 153 } 154 155 static void __exit dmx3191d_exit(void) 156 { 157 pci_unregister_driver(&dmx3191d_pci_driver); 158 } 159 160 module_init(dmx3191d_init); 161 module_exit(dmx3191d_exit); 162 163 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>"); 164 MODULE_DESCRIPTION("Domex DMX3191D SCSI driver"); 165 MODULE_LICENSE("GPL"); 166