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