diff options
Diffstat (limited to 'drivers/scsi/dmx3191d.c')
| -rw-r--r-- | drivers/scsi/dmx3191d.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/scsi/dmx3191d.c b/drivers/scsi/dmx3191d.c new file mode 100644 index 0000000..1d22424 --- /dev/null +++ b/drivers/scsi/dmx3191d.c @@ -0,0 +1,173 @@ +/* + dmx3191d.c - driver for the Domex DMX3191D SCSI card. + Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it> + Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de> + + Based on the generic NCR5380 driver by Drew Eckhardt et al. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <asm/io.h> + +#include <scsi/scsi_host.h> + +/* + * Defintions for the generic 5380 driver. + */ +#define AUTOSENSE + +#define NCR5380_read(reg) inb(port + reg) +#define NCR5380_write(reg, value) outb(value, port + reg) + +#define NCR5380_implementation_fields unsigned int port +#define NCR5380_local_declare() NCR5380_implementation_fields +#define NCR5380_setup(instance) port = instance->io_port + +/* + * Includes needed for NCR5380.[ch] (XXX: Move them to NCR5380.h) + */ +#include <linux/delay.h> +#include "scsi.h" + +#include "NCR5380.h" +#include "NCR5380.c" + +#define DMX3191D_DRIVER_NAME "dmx3191d" +#define DMX3191D_REGION_LEN 8 + + +static struct scsi_host_template dmx3191d_driver_template = { + .proc_name = DMX3191D_DRIVER_NAME, + .name = "Domex DMX3191D", + .queuecommand = NCR5380_queue_command, + .eh_abort_handler = NCR5380_abort, + .eh_bus_reset_handler = NCR5380_bus_reset, + .eh_device_reset_handler= NCR5380_device_reset, + .eh_host_reset_handler = NCR5380_host_reset, + .can_queue = 32, + .this_id = 7, + .sg_tablesize = SG_ALL, + .cmd_per_lun = 2, + .use_clustering = DISABLE_CLUSTERING, +}; + +static int __devinit dmx3191d_probe_one(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct Scsi_Host *shost; + unsigned long io; + int error = -ENODEV; + + if (pci_enable_device(pdev)) + goto out; + + io = pci_resource_start(pdev, 0); + if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) { + printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n", + io, io + DMX3191D_REGION_LEN); + goto out_disable_device; + } + + shost = scsi_host_alloc(&dmx3191d_driver_template, + sizeof(struct NCR5380_hostdata)); + if (!shost) + goto out_release_region; + shost->io_port = io; + shost->irq = pdev->irq; + + NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); + + if (request_irq(pdev->irq, NCR5380_intr, SA_SHIRQ, + DMX3191D_DRIVER_NAME, shost)) { + /* + * Steam powered scsi controllers run without an IRQ anyway + */ + printk(KERN_WARNING "dmx3191: IRQ %d not available - " + "switching to polled mode.\n", pdev->irq); + shost->irq = SCSI_IRQ_NONE; + } + + pci_set_drvdata(pdev, shost); + + error = scsi_add_host(shost, &pdev->dev); + if (error) + goto out_free_irq; + + scsi_scan_host(shost); + return 0; + + out_free_irq: + free_irq(shost->irq, shost); + out_release_region: + release_region(shost->io_port, DMX3191D_REGION_LEN); + out_disable_device: + pci_disable_device(pdev); + out: + return error; +} + +static void __devexit dmx3191d_remove_one(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + + scsi_remove_host(shost); + + NCR5380_exit(shost); + + if (shost->irq != SCSI_IRQ_NONE) + free_irq(shost->irq, shost); + release_region(shost->io_port, DMX3191D_REGION_LEN); + pci_disable_device(pdev); + + scsi_host_put(shost); +} + +static struct pci_device_id dmx3191d_pci_tbl[] = { + {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, + { } +}; +MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl); + +static struct pci_driver dmx3191d_pci_driver = { + .name = DMX3191D_DRIVER_NAME, + .id_table = dmx3191d_pci_tbl, + .probe = dmx3191d_probe_one, + .remove = __devexit_p(dmx3191d_remove_one), +}; + +static int __init dmx3191d_init(void) +{ + return pci_module_init(&dmx3191d_pci_driver); +} + +static void __exit dmx3191d_exit(void) +{ + pci_unregister_driver(&dmx3191d_pci_driver); +} + +module_init(dmx3191d_init); +module_exit(dmx3191d_exit); + +MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>"); +MODULE_DESCRIPTION("Domex DMX3191D SCSI driver"); +MODULE_LICENSE("GPL"); |
