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 * Defintions 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 .eh_device_reset_handler= NCR5380_device_reset, 65 .eh_host_reset_handler = NCR5380_host_reset, 66 .can_queue = 32, 67 .this_id = 7, 68 .sg_tablesize = SG_ALL, 69 .cmd_per_lun = 2, 70 .use_clustering = DISABLE_CLUSTERING, 71 }; 72 73 static int __devinit dmx3191d_probe_one(struct pci_dev *pdev, 74 const struct pci_device_id *id) 75 { 76 struct Scsi_Host *shost; 77 unsigned long io; 78 int error = -ENODEV; 79 80 if (pci_enable_device(pdev)) 81 goto out; 82 83 io = pci_resource_start(pdev, 0); 84 if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { 85 printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n", 86 io, io + DMX3191D_REGION_LEN); 87 goto out_disable_device; 88 } 89 90 shost = scsi_host_alloc(&dmx3191d_driver_template, 91 sizeof(struct NCR5380_hostdata)); 92 if (!shost) 93 goto out_release_region; 94 shost->io_port = io; 95 shost->irq = pdev->irq; 96 97 NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); 98 99 if (request_irq(pdev->irq, NCR5380_intr, SA_SHIRQ, 100 DMX3191D_DRIVER_NAME, shost)) { 101 /* 102 * Steam powered scsi controllers run without an IRQ anyway 103 */ 104 printk(KERN_WARNING "dmx3191: IRQ %d not available - " 105 "switching to polled mode.\n", pdev->irq); 106 shost->irq = SCSI_IRQ_NONE; 107 } 108 109 pci_set_drvdata(pdev, shost); 110 111 error = scsi_add_host(shost, &pdev->dev); 112 if (error) 113 goto out_free_irq; 114 115 scsi_scan_host(shost); 116 return 0; 117 118 out_free_irq: 119 free_irq(shost->irq, shost); 120 out_release_region: 121 release_region(shost->io_port, DMX3191D_REGION_LEN); 122 out_disable_device: 123 pci_disable_device(pdev); 124 out: 125 return error; 126 } 127 128 static void __devexit dmx3191d_remove_one(struct pci_dev *pdev) 129 { 130 struct Scsi_Host *shost = pci_get_drvdata(pdev); 131 132 scsi_remove_host(shost); 133 134 NCR5380_exit(shost); 135 136 if (shost->irq != SCSI_IRQ_NONE) 137 free_irq(shost->irq, shost); 138 release_region(shost->io_port, DMX3191D_REGION_LEN); 139 pci_disable_device(pdev); 140 141 scsi_host_put(shost); 142 } 143 144 static struct pci_device_id dmx3191d_pci_tbl[] = { 145 {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, 146 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, 147 { } 148 }; 149 MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); 150 151 static struct pci_driver dmx3191d_pci_driver = { 152 .name = DMX3191D_DRIVER_NAME, 153 .id_table = dmx3191d_pci_tbl, 154 .probe = dmx3191d_probe_one, 155 .remove = __devexit_p(dmx3191d_remove_one), 156 }; 157 158 static int __init dmx3191d_init(void) 159 { 160 return pci_module_init(&dmx3191d_pci_driver); 161 } 162 163 static void __exit dmx3191d_exit(void) 164 { 165 pci_unregister_driver(&dmx3191d_pci_driver); 166 } 167 168 module_init(dmx3191d_init); 169 module_exit(dmx3191d_exit); 170 171 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>"); 172 MODULE_DESCRIPTION("Domex DMX3191D SCSI driver"); 173 MODULE_LICENSE("GPL"); 174