forked from mirrors/linux
c9a71ca13f
'struct pci_device_id' is not modified in these drivers. Constifying this structure moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 70237 9137 320 79694 1374e drivers/scsi/3w-9xxx.o After: ===== text data bss dec hex filename 70461 8913 320 79694 1374e drivers/scsi/3w-9xxx.o Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/fc61b1946488c1ea8f7a17a06cf40fbd05dcc6de.1733590049.git.christophe.jaillet@wanadoo.fr Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
148 lines
3.6 KiB
C
148 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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dmx3191d.c - driver for the Domex DMX3191D SCSI card.
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Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
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Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de>
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Based on the generic NCR5380 driver by Drew Eckhardt et al.
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*/
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <scsi/scsi_host.h>
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/*
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* Definitions for the generic 5380 driver.
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*/
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#define NCR5380_read(reg) inb(hostdata->base + (reg))
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#define NCR5380_write(reg, value) outb(value, hostdata->base + (reg))
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#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none
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#define NCR5380_dma_recv_setup NCR5380_dma_setup_none
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#define NCR5380_dma_send_setup NCR5380_dma_setup_none
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#define NCR5380_dma_residual NCR5380_dma_residual_none
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#define NCR5380_implementation_fields /* none */
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#include "NCR5380.h"
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#include "NCR5380.c"
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#define DMX3191D_DRIVER_NAME "dmx3191d"
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#define DMX3191D_REGION_LEN 8
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static const struct scsi_host_template dmx3191d_driver_template = {
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.module = THIS_MODULE,
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.proc_name = DMX3191D_DRIVER_NAME,
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.name = "Domex DMX3191D",
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.info = NCR5380_info,
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.queuecommand = NCR5380_queue_command,
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.eh_abort_handler = NCR5380_abort,
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.eh_host_reset_handler = NCR5380_host_reset,
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.can_queue = 32,
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.this_id = 7,
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.sg_tablesize = SG_ALL,
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.cmd_per_lun = 2,
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.dma_boundary = PAGE_SIZE - 1,
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.cmd_size = sizeof(struct NCR5380_cmd),
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};
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static int dmx3191d_probe_one(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct Scsi_Host *shost;
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struct NCR5380_hostdata *hostdata;
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unsigned long io;
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int error = -ENODEV;
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if (pci_enable_device(pdev))
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goto out;
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io = pci_resource_start(pdev, 0);
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if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) {
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printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
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io, io + DMX3191D_REGION_LEN);
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goto out_disable_device;
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}
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shost = scsi_host_alloc(&dmx3191d_driver_template,
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sizeof(struct NCR5380_hostdata));
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if (!shost)
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goto out_release_region;
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hostdata = shost_priv(shost);
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hostdata->base = io;
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/* This card does not seem to raise an interrupt on pdev->irq.
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* Steam-powered SCSI controllers run without an IRQ anyway.
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*/
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shost->irq = NO_IRQ;
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error = NCR5380_init(shost, 0);
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if (error)
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goto out_host_put;
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NCR5380_maybe_reset_bus(shost);
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pci_set_drvdata(pdev, shost);
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error = scsi_add_host(shost, &pdev->dev);
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if (error)
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goto out_exit;
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scsi_scan_host(shost);
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return 0;
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out_exit:
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NCR5380_exit(shost);
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out_host_put:
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scsi_host_put(shost);
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out_release_region:
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release_region(io, DMX3191D_REGION_LEN);
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out_disable_device:
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pci_disable_device(pdev);
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out:
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return error;
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}
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static void dmx3191d_remove_one(struct pci_dev *pdev)
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{
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struct Scsi_Host *shost = pci_get_drvdata(pdev);
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struct NCR5380_hostdata *hostdata = shost_priv(shost);
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unsigned long io = hostdata->base;
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scsi_remove_host(shost);
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NCR5380_exit(shost);
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scsi_host_put(shost);
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release_region(io, DMX3191D_REGION_LEN);
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pci_disable_device(pdev);
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}
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static const struct pci_device_id dmx3191d_pci_tbl[] = {
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{PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
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{ }
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};
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MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
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static struct pci_driver dmx3191d_pci_driver = {
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.name = DMX3191D_DRIVER_NAME,
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.id_table = dmx3191d_pci_tbl,
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.probe = dmx3191d_probe_one,
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.remove = dmx3191d_remove_one,
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};
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module_pci_driver(dmx3191d_pci_driver);
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MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
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MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
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MODULE_LICENSE("GPL");
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