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(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(shost, 0); 90 if (error) 91 goto out_host_put; 92 93 NCR5380_maybe_reset_bus(shost); 94 95 pci_set_drvdata(pdev, shost); 96 97 error = scsi_add_host(shost, &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(shost); 106 out_host_put: 107 scsi_host_put(shost); 108 out_release_region: 109 release_region(io, DMX3191D_REGION_LEN); 110 out_disable_device: 111 pci_disable_device(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(shost); 125 scsi_host_put(shost); 126 release_region(io, DMX3191D_REGION_LEN); 127 pci_disable_device(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