97af50f60f
In these drivers, scsi_remove_host() is called too late, at the point it is called, the driver has already shut down too far to accept any I/O that the shutdown might generate. Any generated I/O actually triggers a panic. Fix this by calling scsi_remove_host() as early as possible and not calling scsi_host_put() until just before we kfree the ahc_softc. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
/*
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* Linux driver attachment glue for aic7770 based controllers.
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*
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* Copyright (c) 2000-2003 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $
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*/
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#include "aic7xxx_osm.h"
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#include <linux/device.h>
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#include <linux/eisa.h>
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int
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aic7770_map_registers(struct ahc_softc *ahc, u_int port)
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{
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/*
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* Lock out other contenders for our i/o space.
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*/
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if (request_region(port, AHC_EISA_IOSIZE, "aic7xxx") == 0)
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return (ENOMEM);
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ahc->tag = BUS_SPACE_PIO;
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ahc->bsh.ioport = port;
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return (0);
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}
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int
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aic7770_map_int(struct ahc_softc *ahc, u_int irq)
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{
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int error;
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int shared;
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shared = 0;
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if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
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shared = SA_SHIRQ;
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error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
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if (error == 0)
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ahc->platform_data->irq = irq;
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return (-error);
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}
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static int
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aic7770_probe(struct device *dev)
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{
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struct eisa_device *edev = to_eisa_device(dev);
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u_int eisaBase = edev->base_addr+AHC_EISA_SLOT_OFFSET;
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struct ahc_softc *ahc;
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char buf[80];
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char *name;
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int error;
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sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
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name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
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if (name == NULL)
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return (ENOMEM);
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strcpy(name, buf);
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ahc = ahc_alloc(&aic7xxx_driver_template, name);
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if (ahc == NULL)
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return (ENOMEM);
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error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
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eisaBase);
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if (error != 0) {
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ahc->bsh.ioport = 0;
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ahc_free(ahc);
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return (error);
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}
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dev_set_drvdata(dev, ahc);
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error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
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return (error);
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}
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static int
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aic7770_remove(struct device *dev)
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{
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struct ahc_softc *ahc = dev_get_drvdata(dev);
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u_long s;
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if (ahc->platform_data && ahc->platform_data->host)
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scsi_remove_host(ahc->platform_data->host);
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ahc_lock(ahc, &s);
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ahc_intr_enable(ahc, FALSE);
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ahc_unlock(ahc, &s);
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ahc_free(ahc);
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return 0;
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}
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static struct eisa_device_id aic7770_ids[] = {
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{ "ADP7771", 0 }, /* AHA 274x */
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{ "ADP7756", 1 }, /* AHA 284x BIOS enabled */
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{ "ADP7757", 2 }, /* AHA 284x BIOS disabled */
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{ "ADP7782", 3 }, /* AHA 274x Olivetti OEM */
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{ "ADP7783", 4 }, /* AHA 274x Olivetti OEM (Differential) */
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{ "ADP7770", 5 }, /* AIC7770 generic */
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{ "" }
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};
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static struct eisa_driver aic7770_driver = {
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.id_table = aic7770_ids,
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.driver = {
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.name = "aic7xxx",
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.probe = aic7770_probe,
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.remove = aic7770_remove,
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}
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};
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int
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ahc_linux_eisa_init(void)
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{
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return eisa_driver_register(&aic7770_driver);
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}
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void
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ahc_linux_eisa_exit(void)
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{
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eisa_driver_unregister(&aic7770_driver);
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}
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