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#include <linux/delay.h> 46#include "scsi.h" 47 48#include "NCR5380.h" 49#include "NCR5380.c" 50 51#define DMX3191D_DRIVER_NAME "dmx3191d" 52#define DMX3191D_REGION_LEN 8 53 54 55static struct scsi_host_template dmx3191d_driver_template = { 56 .proc_name = DMX3191D_DRIVER_NAME, 57 .name = "Domex DMX3191D", 58 .queuecommand = NCR5380_queue_command, 59 .eh_abort_handler = NCR5380_abort, 60 .eh_bus_reset_handler = NCR5380_bus_reset, 61 .can_queue = 32, 62 .this_id = 7, 63 .sg_tablesize = SG_ALL, 64 .cmd_per_lun = 2, 65 .use_clustering = DISABLE_CLUSTERING, 66}; 67 68static int __devinit 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 shost->irq = pdev->irq; 91 92 NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); 93 94 if (request_irq(pdev->irq, NCR5380_intr, IRQF_SHARED, 95 DMX3191D_DRIVER_NAME, shost)) { 96 /* 97 * Steam powered scsi controllers run without an IRQ anyway 98 */ 99 printk(KERN_WARNING "dmx3191: IRQ %d not available - " 100 "switching to polled mode.\n", pdev->irq); 101 shost->irq = SCSI_IRQ_NONE; 102 } 103 104 pci_set_drvdata(pdev, shost); 105 106 error = scsi_add_host(shost, &pdev->dev); 107 if (error) 108 goto out_free_irq; 109 110 scsi_scan_host(shost); 111 return 0; 112 113 out_free_irq: 114 free_irq(shost->irq, 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 123static void __devexit dmx3191d_remove_one(struct pci_dev *pdev) 124{ 125 struct Scsi_Host *shost = pci_get_drvdata(pdev); 126 127 scsi_remove_host(shost); 128 129 NCR5380_exit(shost); 130 131 if (shost->irq != SCSI_IRQ_NONE) 132 free_irq(shost->irq, shost); 133 release_region(shost->io_port, DMX3191D_REGION_LEN); 134 pci_disable_device(pdev); 135 136 scsi_host_put(shost); 137} 138 139static struct pci_device_id dmx3191d_pci_tbl[] = { 140 {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, 141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, 142 { } 143}; 144MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); 145 146static struct pci_driver dmx3191d_pci_driver = { 147 .name = DMX3191D_DRIVER_NAME, 148 .id_table = dmx3191d_pci_tbl, 149 .probe = dmx3191d_probe_one, 150 .remove = __devexit_p(dmx3191d_remove_one), 151}; 152 153static int __init dmx3191d_init(void) 154{ 155 return pci_register_driver(&dmx3191d_pci_driver); 156} 157 158static void __exit dmx3191d_exit(void) 159{ 160 pci_unregister_driver(&dmx3191d_pci_driver); 161} 162 163module_init(dmx3191d_init); 164module_exit(dmx3191d_exit); 165 166MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>"); 167MODULE_DESCRIPTION("Domex DMX3191D SCSI driver"); 168MODULE_LICENSE("GPL"); 169